Commit | Line | Data |
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252b5132 | 1 | /* tc-mips.c -- assemble code for a MIPS chip. |
98d3f06f | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
82efde3a | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by the OSF and Ralph Campbell. |
5 | Written by Keith Knowles and Ralph Campbell, working independently. | |
6 | Modified for ECOFF and R4000 support by Ian Lance Taylor of Cygnus | |
7 | Support. | |
8 | ||
9 | This file is part of GAS. | |
10 | ||
11 | GAS is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2, or (at your option) | |
14 | any later version. | |
15 | ||
16 | GAS is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with GAS; see the file COPYING. If not, write to the Free | |
23 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
24 | 02111-1307, USA. */ | |
25 | ||
26 | #include "as.h" | |
27 | #include "config.h" | |
28 | #include "subsegs.h" | |
3882b010 | 29 | #include "safe-ctype.h" |
252b5132 RH |
30 | |
31 | #ifdef USE_STDARG | |
32 | #include <stdarg.h> | |
33 | #endif | |
34 | #ifdef USE_VARARGS | |
35 | #include <varargs.h> | |
36 | #endif | |
37 | ||
38 | #include "opcode/mips.h" | |
39 | #include "itbl-ops.h" | |
c5dd6aab | 40 | #include "dwarf2dbg.h" |
252b5132 RH |
41 | |
42 | #ifdef DEBUG | |
43 | #define DBG(x) printf x | |
44 | #else | |
45 | #define DBG(x) | |
46 | #endif | |
47 | ||
48 | #ifdef OBJ_MAYBE_ELF | |
49 | /* Clean up namespace so we can include obj-elf.h too. */ | |
50 | static int mips_output_flavor PARAMS ((void)); | |
51 | static int mips_output_flavor () { return OUTPUT_FLAVOR; } | |
52 | #undef OBJ_PROCESS_STAB | |
53 | #undef OUTPUT_FLAVOR | |
54 | #undef S_GET_ALIGN | |
55 | #undef S_GET_SIZE | |
56 | #undef S_SET_ALIGN | |
57 | #undef S_SET_SIZE | |
252b5132 RH |
58 | #undef obj_frob_file |
59 | #undef obj_frob_file_after_relocs | |
60 | #undef obj_frob_symbol | |
61 | #undef obj_pop_insert | |
62 | #undef obj_sec_sym_ok_for_reloc | |
63 | #undef OBJ_COPY_SYMBOL_ATTRIBUTES | |
64 | ||
65 | #include "obj-elf.h" | |
66 | /* Fix any of them that we actually care about. */ | |
67 | #undef OUTPUT_FLAVOR | |
68 | #define OUTPUT_FLAVOR mips_output_flavor() | |
69 | #endif | |
70 | ||
71 | #if defined (OBJ_ELF) | |
72 | #include "elf/mips.h" | |
73 | #endif | |
74 | ||
75 | #ifndef ECOFF_DEBUGGING | |
76 | #define NO_ECOFF_DEBUGGING | |
77 | #define ECOFF_DEBUGGING 0 | |
78 | #endif | |
79 | ||
ecb4347a DJ |
80 | int mips_flag_mdebug = -1; |
81 | ||
252b5132 RH |
82 | #include "ecoff.h" |
83 | ||
84 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
85 | static char *mips_regmask_frag; | |
86 | #endif | |
87 | ||
85b51719 | 88 | #define ZERO 0 |
252b5132 RH |
89 | #define AT 1 |
90 | #define TREG 24 | |
91 | #define PIC_CALL_REG 25 | |
92 | #define KT0 26 | |
93 | #define KT1 27 | |
94 | #define GP 28 | |
95 | #define SP 29 | |
96 | #define FP 30 | |
97 | #define RA 31 | |
98 | ||
99 | #define ILLEGAL_REG (32) | |
100 | ||
101 | /* Allow override of standard little-endian ECOFF format. */ | |
102 | ||
103 | #ifndef ECOFF_LITTLE_FORMAT | |
104 | #define ECOFF_LITTLE_FORMAT "ecoff-littlemips" | |
105 | #endif | |
106 | ||
107 | extern int target_big_endian; | |
108 | ||
252b5132 RH |
109 | /* The name of the readonly data section. */ |
110 | #define RDATA_SECTION_NAME (OUTPUT_FLAVOR == bfd_target_aout_flavour \ | |
111 | ? ".data" \ | |
112 | : OUTPUT_FLAVOR == bfd_target_ecoff_flavour \ | |
113 | ? ".rdata" \ | |
056350c6 NC |
114 | : OUTPUT_FLAVOR == bfd_target_coff_flavour \ |
115 | ? ".rdata" \ | |
252b5132 RH |
116 | : OUTPUT_FLAVOR == bfd_target_elf_flavour \ |
117 | ? ".rodata" \ | |
118 | : (abort (), "")) | |
119 | ||
a325df1d TS |
120 | /* The ABI to use. */ |
121 | enum mips_abi_level | |
122 | { | |
123 | NO_ABI = 0, | |
124 | O32_ABI, | |
125 | O64_ABI, | |
126 | N32_ABI, | |
127 | N64_ABI, | |
128 | EABI_ABI | |
129 | }; | |
130 | ||
131 | /* MIPS ABI we are using for this output file. */ | |
316f5878 | 132 | static enum mips_abi_level mips_abi = NO_ABI; |
a325df1d | 133 | |
252b5132 RH |
134 | /* This is the set of options which may be modified by the .set |
135 | pseudo-op. We use a struct so that .set push and .set pop are more | |
136 | reliable. */ | |
137 | ||
e972090a NC |
138 | struct mips_set_options |
139 | { | |
252b5132 RH |
140 | /* MIPS ISA (Instruction Set Architecture) level. This is set to -1 |
141 | if it has not been initialized. Changed by `.set mipsN', and the | |
142 | -mipsN command line option, and the default CPU. */ | |
143 | int isa; | |
1f25f5d3 CD |
144 | /* Enabled Application Specific Extensions (ASEs). These are set to -1 |
145 | if they have not been initialized. Changed by `.set <asename>', by | |
146 | command line options, and based on the default architecture. */ | |
147 | int ase_mips3d; | |
deec1734 | 148 | int ase_mdmx; |
252b5132 RH |
149 | /* Whether we are assembling for the mips16 processor. 0 if we are |
150 | not, 1 if we are, and -1 if the value has not been initialized. | |
151 | Changed by `.set mips16' and `.set nomips16', and the -mips16 and | |
152 | -nomips16 command line options, and the default CPU. */ | |
153 | int mips16; | |
154 | /* Non-zero if we should not reorder instructions. Changed by `.set | |
155 | reorder' and `.set noreorder'. */ | |
156 | int noreorder; | |
157 | /* Non-zero if we should not permit the $at ($1) register to be used | |
158 | in instructions. Changed by `.set at' and `.set noat'. */ | |
159 | int noat; | |
160 | /* Non-zero if we should warn when a macro instruction expands into | |
161 | more than one machine instruction. Changed by `.set nomacro' and | |
162 | `.set macro'. */ | |
163 | int warn_about_macros; | |
164 | /* Non-zero if we should not move instructions. Changed by `.set | |
165 | move', `.set volatile', `.set nomove', and `.set novolatile'. */ | |
166 | int nomove; | |
167 | /* Non-zero if we should not optimize branches by moving the target | |
168 | of the branch into the delay slot. Actually, we don't perform | |
169 | this optimization anyhow. Changed by `.set bopt' and `.set | |
170 | nobopt'. */ | |
171 | int nobopt; | |
172 | /* Non-zero if we should not autoextend mips16 instructions. | |
173 | Changed by `.set autoextend' and `.set noautoextend'. */ | |
174 | int noautoextend; | |
a325df1d TS |
175 | /* Restrict general purpose registers and floating point registers |
176 | to 32 bit. This is initially determined when -mgp32 or -mfp32 | |
177 | is passed but can changed if the assembler code uses .set mipsN. */ | |
178 | int gp32; | |
179 | int fp32; | |
252b5132 RH |
180 | }; |
181 | ||
a325df1d | 182 | /* True if -mgp32 was passed. */ |
a8e8e863 | 183 | static int file_mips_gp32 = -1; |
a325df1d TS |
184 | |
185 | /* True if -mfp32 was passed. */ | |
a8e8e863 | 186 | static int file_mips_fp32 = -1; |
a325df1d | 187 | |
252b5132 | 188 | /* This is the struct we use to hold the current set of options. Note |
a4672219 | 189 | that we must set the isa field to ISA_UNKNOWN and the ASE fields to |
e7af610e | 190 | -1 to indicate that they have not been initialized. */ |
252b5132 | 191 | |
e972090a NC |
192 | static struct mips_set_options mips_opts = |
193 | { | |
316f5878 | 194 | ISA_UNKNOWN, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0 |
e7af610e | 195 | }; |
252b5132 RH |
196 | |
197 | /* These variables are filled in with the masks of registers used. | |
198 | The object format code reads them and puts them in the appropriate | |
199 | place. */ | |
200 | unsigned long mips_gprmask; | |
201 | unsigned long mips_cprmask[4]; | |
202 | ||
203 | /* MIPS ISA we are using for this output file. */ | |
e7af610e | 204 | static int file_mips_isa = ISA_UNKNOWN; |
252b5132 | 205 | |
a4672219 TS |
206 | /* True if -mips16 was passed or implied by arguments passed on the |
207 | command line (e.g., by -march). */ | |
208 | static int file_ase_mips16; | |
209 | ||
1f25f5d3 CD |
210 | /* True if -mips3d was passed or implied by arguments passed on the |
211 | command line (e.g., by -march). */ | |
212 | static int file_ase_mips3d; | |
213 | ||
deec1734 CD |
214 | /* True if -mdmx was passed or implied by arguments passed on the |
215 | command line (e.g., by -march). */ | |
216 | static int file_ase_mdmx; | |
217 | ||
ec68c924 EC |
218 | /* The argument of the -march= flag. The architecture we are assembling. */ |
219 | static int mips_arch = CPU_UNKNOWN; | |
316f5878 RS |
220 | static const char *mips_arch_string; |
221 | static const struct mips_cpu_info *mips_arch_info; | |
ec68c924 EC |
222 | |
223 | /* The argument of the -mtune= flag. The architecture for which we | |
224 | are optimizing. */ | |
225 | static int mips_tune = CPU_UNKNOWN; | |
316f5878 RS |
226 | static const char *mips_tune_string; |
227 | static const struct mips_cpu_info *mips_tune_info; | |
ec68c924 | 228 | |
316f5878 | 229 | /* True when generating 32-bit code for a 64-bit processor. */ |
252b5132 RH |
230 | static int mips_32bitmode = 0; |
231 | ||
9ce8a5dd GRK |
232 | /* Some ISA's have delay slots for instructions which read or write |
233 | from a coprocessor (eg. mips1-mips3); some don't (eg mips4). | |
bdaaa2e1 | 234 | Return true if instructions marked INSN_LOAD_COPROC_DELAY, |
9ce8a5dd GRK |
235 | INSN_COPROC_MOVE_DELAY, or INSN_WRITE_COND_CODE actually have a |
236 | delay slot in this ISA. The uses of this macro assume that any | |
237 | ISA that has delay slots for one of these, has them for all. They | |
238 | also assume that ISAs which don't have delays for these insns, don't | |
bdaaa2e1 | 239 | have delays for the INSN_LOAD_MEMORY_DELAY instructions either. */ |
9ce8a5dd | 240 | #define ISA_HAS_COPROC_DELAYS(ISA) ( \ |
e7af610e NC |
241 | (ISA) == ISA_MIPS1 \ |
242 | || (ISA) == ISA_MIPS2 \ | |
243 | || (ISA) == ISA_MIPS3 \ | |
9ce8a5dd GRK |
244 | ) |
245 | ||
316f5878 RS |
246 | /* True if the given ABI requires 32-bit registers. */ |
247 | #define ABI_NEEDS_32BIT_REGS(ABI) ((ABI) == O32_ABI) | |
248 | ||
249 | /* Likewise 64-bit registers. */ | |
250 | #define ABI_NEEDS_64BIT_REGS(ABI) \ | |
251 | ((ABI) == N32_ABI \ | |
252 | || (ABI) == N64_ABI \ | |
253 | || (ABI) == O64_ABI) | |
254 | ||
bdaaa2e1 | 255 | /* Return true if ISA supports 64 bit gp register instructions. */ |
9ce8a5dd | 256 | #define ISA_HAS_64BIT_REGS(ISA) ( \ |
e7af610e NC |
257 | (ISA) == ISA_MIPS3 \ |
258 | || (ISA) == ISA_MIPS4 \ | |
84ea6cf2 | 259 | || (ISA) == ISA_MIPS5 \ |
d1cf510e | 260 | || (ISA) == ISA_MIPS64 \ |
9ce8a5dd GRK |
261 | ) |
262 | ||
e013f690 | 263 | #define HAVE_32BIT_GPRS \ |
316f5878 | 264 | (mips_opts.gp32 || ! ISA_HAS_64BIT_REGS (mips_opts.isa)) |
ca4e0257 | 265 | |
e013f690 | 266 | #define HAVE_32BIT_FPRS \ |
316f5878 | 267 | (mips_opts.fp32 || ! ISA_HAS_64BIT_REGS (mips_opts.isa)) |
ca4e0257 RS |
268 | |
269 | #define HAVE_64BIT_GPRS (! HAVE_32BIT_GPRS) | |
270 | #define HAVE_64BIT_FPRS (! HAVE_32BIT_FPRS) | |
271 | ||
316f5878 | 272 | #define HAVE_NEWABI (mips_abi == N32_ABI || mips_abi == N64_ABI) |
e013f690 | 273 | |
316f5878 | 274 | #define HAVE_64BIT_OBJECTS (mips_abi == N64_ABI) |
e013f690 TS |
275 | |
276 | /* We can only have 64bit addresses if the object file format | |
277 | supports it. */ | |
afdbd6d0 CD |
278 | #define HAVE_32BIT_ADDRESSES \ |
279 | (HAVE_32BIT_GPRS \ | |
280 | || ((bfd_arch_bits_per_address (stdoutput) == 32 \ | |
281 | || ! HAVE_64BIT_OBJECTS) \ | |
282 | && mips_pic != EMBEDDED_PIC)) | |
e013f690 TS |
283 | |
284 | #define HAVE_64BIT_ADDRESSES (! HAVE_32BIT_ADDRESSES) | |
ca4e0257 | 285 | |
a4672219 TS |
286 | /* Return true if the given CPU supports the MIPS16 ASE. */ |
287 | #define CPU_HAS_MIPS16(cpu) \ | |
288 | (strncmp (TARGET_CPU, "mips16", sizeof ("mips16") - 1) == 0) | |
289 | ||
1f25f5d3 CD |
290 | /* Return true if the given CPU supports the MIPS3D ASE. */ |
291 | #define CPU_HAS_MIPS3D(cpu) ((cpu) == CPU_SB1 \ | |
292 | ) | |
293 | ||
deec1734 | 294 | /* Return true if the given CPU supports the MDMX ASE. */ |
a4672219 | 295 | #define CPU_HAS_MDMX(cpu) (false \ |
deec1734 CD |
296 | ) |
297 | ||
bdaaa2e1 | 298 | /* Whether the processor uses hardware interlocks to protect |
252b5132 | 299 | reads from the HI and LO registers, and thus does not |
ec68c924 | 300 | require nops to be inserted. */ |
252b5132 | 301 | |
ec68c924 | 302 | #define hilo_interlocks (mips_arch == CPU_R4010 \ |
0a758a12 | 303 | || mips_arch == CPU_SB1 \ |
252b5132 RH |
304 | ) |
305 | ||
306 | /* Whether the processor uses hardware interlocks to protect reads | |
307 | from the GPRs, and thus does not require nops to be inserted. */ | |
308 | #define gpr_interlocks \ | |
e7af610e | 309 | (mips_opts.isa != ISA_MIPS1 \ |
ec68c924 | 310 | || mips_arch == CPU_R3900) |
252b5132 RH |
311 | |
312 | /* As with other "interlocks" this is used by hardware that has FP | |
313 | (co-processor) interlocks. */ | |
bdaaa2e1 | 314 | /* Itbl support may require additional care here. */ |
ec68c924 | 315 | #define cop_interlocks (mips_arch == CPU_R4300 \ |
0a758a12 | 316 | || mips_arch == CPU_SB1 \ |
252b5132 RH |
317 | ) |
318 | ||
6b76fefe CM |
319 | /* Is this a mfhi or mflo instruction? */ |
320 | #define MF_HILO_INSN(PINFO) \ | |
321 | ((PINFO & INSN_READ_HI) || (PINFO & INSN_READ_LO)) | |
322 | ||
252b5132 RH |
323 | /* MIPS PIC level. */ |
324 | ||
e972090a NC |
325 | enum mips_pic_level |
326 | { | |
252b5132 RH |
327 | /* Do not generate PIC code. */ |
328 | NO_PIC, | |
329 | ||
252b5132 RH |
330 | /* Generate PIC code as in the SVR4 MIPS ABI. */ |
331 | SVR4_PIC, | |
332 | ||
333 | /* Generate PIC code without using a global offset table: the data | |
334 | segment has a maximum size of 64K, all data references are off | |
335 | the $gp register, and all text references are PC relative. This | |
336 | is used on some embedded systems. */ | |
337 | EMBEDDED_PIC | |
338 | }; | |
339 | ||
340 | static enum mips_pic_level mips_pic; | |
341 | ||
39c0a331 L |
342 | /* Warn about all NOPS that the assembler generates. */ |
343 | static int warn_nops = 0; | |
344 | ||
c9914766 | 345 | /* 1 if we should generate 32 bit offsets from the $gp register in |
252b5132 | 346 | SVR4_PIC mode. Currently has no meaning in other modes. */ |
c9914766 | 347 | static int mips_big_got = 0; |
252b5132 RH |
348 | |
349 | /* 1 if trap instructions should used for overflow rather than break | |
350 | instructions. */ | |
c9914766 | 351 | static int mips_trap = 0; |
252b5132 | 352 | |
119d663a | 353 | /* 1 if double width floating point constants should not be constructed |
b6ff326e | 354 | by assembling two single width halves into two single width floating |
119d663a NC |
355 | point registers which just happen to alias the double width destination |
356 | register. On some architectures this aliasing can be disabled by a bit | |
d547a75e | 357 | in the status register, and the setting of this bit cannot be determined |
119d663a NC |
358 | automatically at assemble time. */ |
359 | static int mips_disable_float_construction; | |
360 | ||
252b5132 RH |
361 | /* Non-zero if any .set noreorder directives were used. */ |
362 | ||
363 | static int mips_any_noreorder; | |
364 | ||
6b76fefe CM |
365 | /* Non-zero if nops should be inserted when the register referenced in |
366 | an mfhi/mflo instruction is read in the next two instructions. */ | |
367 | static int mips_7000_hilo_fix; | |
368 | ||
252b5132 | 369 | /* The size of the small data section. */ |
156c2f8b | 370 | static unsigned int g_switch_value = 8; |
252b5132 RH |
371 | /* Whether the -G option was used. */ |
372 | static int g_switch_seen = 0; | |
373 | ||
374 | #define N_RMASK 0xc4 | |
375 | #define N_VFP 0xd4 | |
376 | ||
377 | /* If we can determine in advance that GP optimization won't be | |
378 | possible, we can skip the relaxation stuff that tries to produce | |
379 | GP-relative references. This makes delay slot optimization work | |
380 | better. | |
381 | ||
382 | This function can only provide a guess, but it seems to work for | |
fba2b7f9 GK |
383 | gcc output. It needs to guess right for gcc, otherwise gcc |
384 | will put what it thinks is a GP-relative instruction in a branch | |
385 | delay slot. | |
252b5132 RH |
386 | |
387 | I don't know if a fix is needed for the SVR4_PIC mode. I've only | |
388 | fixed it for the non-PIC mode. KR 95/04/07 */ | |
389 | static int nopic_need_relax PARAMS ((symbolS *, int)); | |
390 | ||
391 | /* handle of the OPCODE hash table */ | |
392 | static struct hash_control *op_hash = NULL; | |
393 | ||
394 | /* The opcode hash table we use for the mips16. */ | |
395 | static struct hash_control *mips16_op_hash = NULL; | |
396 | ||
397 | /* This array holds the chars that always start a comment. If the | |
398 | pre-processor is disabled, these aren't very useful */ | |
399 | const char comment_chars[] = "#"; | |
400 | ||
401 | /* This array holds the chars that only start a comment at the beginning of | |
402 | a line. If the line seems to have the form '# 123 filename' | |
403 | .line and .file directives will appear in the pre-processed output */ | |
404 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
405 | first line of the input file. This is because the compiler outputs | |
bdaaa2e1 | 406 | #NO_APP at the beginning of its output. */ |
252b5132 RH |
407 | /* Also note that C style comments are always supported. */ |
408 | const char line_comment_chars[] = "#"; | |
409 | ||
bdaaa2e1 | 410 | /* This array holds machine specific line separator characters. */ |
63a0b638 | 411 | const char line_separator_chars[] = ";"; |
252b5132 RH |
412 | |
413 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
414 | const char EXP_CHARS[] = "eE"; | |
415 | ||
416 | /* Chars that mean this number is a floating point constant */ | |
417 | /* As in 0f12.456 */ | |
418 | /* or 0d1.2345e12 */ | |
419 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
420 | ||
421 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
422 | changed in read.c . Ideally it shouldn't have to know about it at all, | |
423 | but nothing is ideal around here. | |
424 | */ | |
425 | ||
426 | static char *insn_error; | |
427 | ||
428 | static int auto_align = 1; | |
429 | ||
430 | /* When outputting SVR4 PIC code, the assembler needs to know the | |
431 | offset in the stack frame from which to restore the $gp register. | |
432 | This is set by the .cprestore pseudo-op, and saved in this | |
433 | variable. */ | |
434 | static offsetT mips_cprestore_offset = -1; | |
435 | ||
6478892d TS |
436 | /* Similiar for NewABI PIC code, where $gp is callee-saved. NewABI has some |
437 | more optimizations, it can use a register value instead of a memory-saved | |
956cd1d6 | 438 | offset and even an other register than $gp as global pointer. */ |
6478892d TS |
439 | static offsetT mips_cpreturn_offset = -1; |
440 | static int mips_cpreturn_register = -1; | |
441 | static int mips_gp_register = GP; | |
def2e0dd | 442 | static int mips_gprel_offset = 0; |
6478892d | 443 | |
7a621144 DJ |
444 | /* Whether mips_cprestore_offset has been set in the current function |
445 | (or whether it has already been warned about, if not). */ | |
446 | static int mips_cprestore_valid = 0; | |
447 | ||
252b5132 RH |
448 | /* This is the register which holds the stack frame, as set by the |
449 | .frame pseudo-op. This is needed to implement .cprestore. */ | |
450 | static int mips_frame_reg = SP; | |
451 | ||
7a621144 DJ |
452 | /* Whether mips_frame_reg has been set in the current function |
453 | (or whether it has already been warned about, if not). */ | |
454 | static int mips_frame_reg_valid = 0; | |
455 | ||
252b5132 RH |
456 | /* To output NOP instructions correctly, we need to keep information |
457 | about the previous two instructions. */ | |
458 | ||
459 | /* Whether we are optimizing. The default value of 2 means to remove | |
460 | unneeded NOPs and swap branch instructions when possible. A value | |
461 | of 1 means to not swap branches. A value of 0 means to always | |
462 | insert NOPs. */ | |
463 | static int mips_optimize = 2; | |
464 | ||
465 | /* Debugging level. -g sets this to 2. -gN sets this to N. -g0 is | |
466 | equivalent to seeing no -g option at all. */ | |
467 | static int mips_debug = 0; | |
468 | ||
469 | /* The previous instruction. */ | |
470 | static struct mips_cl_insn prev_insn; | |
471 | ||
472 | /* The instruction before prev_insn. */ | |
473 | static struct mips_cl_insn prev_prev_insn; | |
474 | ||
475 | /* If we don't want information for prev_insn or prev_prev_insn, we | |
476 | point the insn_mo field at this dummy integer. */ | |
43841e91 | 477 | static const struct mips_opcode dummy_opcode = { NULL, NULL, 0, 0, 0, 0 }; |
252b5132 RH |
478 | |
479 | /* Non-zero if prev_insn is valid. */ | |
480 | static int prev_insn_valid; | |
481 | ||
482 | /* The frag for the previous instruction. */ | |
483 | static struct frag *prev_insn_frag; | |
484 | ||
485 | /* The offset into prev_insn_frag for the previous instruction. */ | |
486 | static long prev_insn_where; | |
487 | ||
488 | /* The reloc type for the previous instruction, if any. */ | |
f6688943 | 489 | static bfd_reloc_code_real_type prev_insn_reloc_type[3]; |
252b5132 RH |
490 | |
491 | /* The reloc for the previous instruction, if any. */ | |
f6688943 | 492 | static fixS *prev_insn_fixp[3]; |
252b5132 RH |
493 | |
494 | /* Non-zero if the previous instruction was in a delay slot. */ | |
495 | static int prev_insn_is_delay_slot; | |
496 | ||
497 | /* Non-zero if the previous instruction was in a .set noreorder. */ | |
498 | static int prev_insn_unreordered; | |
499 | ||
500 | /* Non-zero if the previous instruction uses an extend opcode (if | |
501 | mips16). */ | |
502 | static int prev_insn_extended; | |
503 | ||
504 | /* Non-zero if the previous previous instruction was in a .set | |
505 | noreorder. */ | |
506 | static int prev_prev_insn_unreordered; | |
507 | ||
508 | /* If this is set, it points to a frag holding nop instructions which | |
509 | were inserted before the start of a noreorder section. If those | |
510 | nops turn out to be unnecessary, the size of the frag can be | |
511 | decreased. */ | |
512 | static fragS *prev_nop_frag; | |
513 | ||
514 | /* The number of nop instructions we created in prev_nop_frag. */ | |
515 | static int prev_nop_frag_holds; | |
516 | ||
517 | /* The number of nop instructions that we know we need in | |
bdaaa2e1 | 518 | prev_nop_frag. */ |
252b5132 RH |
519 | static int prev_nop_frag_required; |
520 | ||
521 | /* The number of instructions we've seen since prev_nop_frag. */ | |
522 | static int prev_nop_frag_since; | |
523 | ||
524 | /* For ECOFF and ELF, relocations against symbols are done in two | |
525 | parts, with a HI relocation and a LO relocation. Each relocation | |
526 | has only 16 bits of space to store an addend. This means that in | |
527 | order for the linker to handle carries correctly, it must be able | |
528 | to locate both the HI and the LO relocation. This means that the | |
529 | relocations must appear in order in the relocation table. | |
530 | ||
531 | In order to implement this, we keep track of each unmatched HI | |
532 | relocation. We then sort them so that they immediately precede the | |
bdaaa2e1 | 533 | corresponding LO relocation. */ |
252b5132 | 534 | |
e972090a NC |
535 | struct mips_hi_fixup |
536 | { | |
252b5132 RH |
537 | /* Next HI fixup. */ |
538 | struct mips_hi_fixup *next; | |
539 | /* This fixup. */ | |
540 | fixS *fixp; | |
541 | /* The section this fixup is in. */ | |
542 | segT seg; | |
543 | }; | |
544 | ||
545 | /* The list of unmatched HI relocs. */ | |
546 | ||
547 | static struct mips_hi_fixup *mips_hi_fixup_list; | |
548 | ||
549 | /* Map normal MIPS register numbers to mips16 register numbers. */ | |
550 | ||
551 | #define X ILLEGAL_REG | |
e972090a NC |
552 | static const int mips32_to_16_reg_map[] = |
553 | { | |
252b5132 RH |
554 | X, X, 2, 3, 4, 5, 6, 7, |
555 | X, X, X, X, X, X, X, X, | |
556 | 0, 1, X, X, X, X, X, X, | |
557 | X, X, X, X, X, X, X, X | |
558 | }; | |
559 | #undef X | |
560 | ||
561 | /* Map mips16 register numbers to normal MIPS register numbers. */ | |
562 | ||
e972090a NC |
563 | static const unsigned int mips16_to_32_reg_map[] = |
564 | { | |
252b5132 RH |
565 | 16, 17, 2, 3, 4, 5, 6, 7 |
566 | }; | |
567 | \f | |
568 | /* Since the MIPS does not have multiple forms of PC relative | |
569 | instructions, we do not have to do relaxing as is done on other | |
570 | platforms. However, we do have to handle GP relative addressing | |
571 | correctly, which turns out to be a similar problem. | |
572 | ||
573 | Every macro that refers to a symbol can occur in (at least) two | |
574 | forms, one with GP relative addressing and one without. For | |
575 | example, loading a global variable into a register generally uses | |
576 | a macro instruction like this: | |
577 | lw $4,i | |
578 | If i can be addressed off the GP register (this is true if it is in | |
579 | the .sbss or .sdata section, or if it is known to be smaller than | |
580 | the -G argument) this will generate the following instruction: | |
581 | lw $4,i($gp) | |
582 | This instruction will use a GPREL reloc. If i can not be addressed | |
583 | off the GP register, the following instruction sequence will be used: | |
584 | lui $at,i | |
585 | lw $4,i($at) | |
586 | In this case the first instruction will have a HI16 reloc, and the | |
587 | second reloc will have a LO16 reloc. Both relocs will be against | |
588 | the symbol i. | |
589 | ||
590 | The issue here is that we may not know whether i is GP addressable | |
591 | until after we see the instruction that uses it. Therefore, we | |
592 | want to be able to choose the final instruction sequence only at | |
593 | the end of the assembly. This is similar to the way other | |
594 | platforms choose the size of a PC relative instruction only at the | |
595 | end of assembly. | |
596 | ||
597 | When generating position independent code we do not use GP | |
598 | addressing in quite the same way, but the issue still arises as | |
599 | external symbols and local symbols must be handled differently. | |
600 | ||
601 | We handle these issues by actually generating both possible | |
602 | instruction sequences. The longer one is put in a frag_var with | |
603 | type rs_machine_dependent. We encode what to do with the frag in | |
604 | the subtype field. We encode (1) the number of existing bytes to | |
605 | replace, (2) the number of new bytes to use, (3) the offset from | |
606 | the start of the existing bytes to the first reloc we must generate | |
607 | (that is, the offset is applied from the start of the existing | |
608 | bytes after they are replaced by the new bytes, if any), (4) the | |
609 | offset from the start of the existing bytes to the second reloc, | |
610 | (5) whether a third reloc is needed (the third reloc is always four | |
611 | bytes after the second reloc), and (6) whether to warn if this | |
612 | variant is used (this is sometimes needed if .set nomacro or .set | |
613 | noat is in effect). All these numbers are reasonably small. | |
614 | ||
615 | Generating two instruction sequences must be handled carefully to | |
616 | ensure that delay slots are handled correctly. Fortunately, there | |
617 | are a limited number of cases. When the second instruction | |
618 | sequence is generated, append_insn is directed to maintain the | |
619 | existing delay slot information, so it continues to apply to any | |
620 | code after the second instruction sequence. This means that the | |
621 | second instruction sequence must not impose any requirements not | |
622 | required by the first instruction sequence. | |
623 | ||
624 | These variant frags are then handled in functions called by the | |
625 | machine independent code. md_estimate_size_before_relax returns | |
626 | the final size of the frag. md_convert_frag sets up the final form | |
627 | of the frag. tc_gen_reloc adjust the first reloc and adds a second | |
628 | one if needed. */ | |
629 | #define RELAX_ENCODE(old, new, reloc1, reloc2, reloc3, warn) \ | |
630 | ((relax_substateT) \ | |
631 | (((old) << 23) \ | |
632 | | ((new) << 16) \ | |
633 | | (((reloc1) + 64) << 9) \ | |
634 | | (((reloc2) + 64) << 2) \ | |
635 | | ((reloc3) ? (1 << 1) : 0) \ | |
636 | | ((warn) ? 1 : 0))) | |
637 | #define RELAX_OLD(i) (((i) >> 23) & 0x7f) | |
638 | #define RELAX_NEW(i) (((i) >> 16) & 0x7f) | |
9a41af64 TS |
639 | #define RELAX_RELOC1(i) ((valueT) (((i) >> 9) & 0x7f) - 64) |
640 | #define RELAX_RELOC2(i) ((valueT) (((i) >> 2) & 0x7f) - 64) | |
252b5132 RH |
641 | #define RELAX_RELOC3(i) (((i) >> 1) & 1) |
642 | #define RELAX_WARN(i) ((i) & 1) | |
643 | ||
644 | /* For mips16 code, we use an entirely different form of relaxation. | |
645 | mips16 supports two versions of most instructions which take | |
646 | immediate values: a small one which takes some small value, and a | |
647 | larger one which takes a 16 bit value. Since branches also follow | |
648 | this pattern, relaxing these values is required. | |
649 | ||
650 | We can assemble both mips16 and normal MIPS code in a single | |
651 | object. Therefore, we need to support this type of relaxation at | |
652 | the same time that we support the relaxation described above. We | |
653 | use the high bit of the subtype field to distinguish these cases. | |
654 | ||
655 | The information we store for this type of relaxation is the | |
656 | argument code found in the opcode file for this relocation, whether | |
657 | the user explicitly requested a small or extended form, and whether | |
658 | the relocation is in a jump or jal delay slot. That tells us the | |
659 | size of the value, and how it should be stored. We also store | |
660 | whether the fragment is considered to be extended or not. We also | |
661 | store whether this is known to be a branch to a different section, | |
662 | whether we have tried to relax this frag yet, and whether we have | |
663 | ever extended a PC relative fragment because of a shift count. */ | |
664 | #define RELAX_MIPS16_ENCODE(type, small, ext, dslot, jal_dslot) \ | |
665 | (0x80000000 \ | |
666 | | ((type) & 0xff) \ | |
667 | | ((small) ? 0x100 : 0) \ | |
668 | | ((ext) ? 0x200 : 0) \ | |
669 | | ((dslot) ? 0x400 : 0) \ | |
670 | | ((jal_dslot) ? 0x800 : 0)) | |
671 | #define RELAX_MIPS16_P(i) (((i) & 0x80000000) != 0) | |
672 | #define RELAX_MIPS16_TYPE(i) ((i) & 0xff) | |
673 | #define RELAX_MIPS16_USER_SMALL(i) (((i) & 0x100) != 0) | |
674 | #define RELAX_MIPS16_USER_EXT(i) (((i) & 0x200) != 0) | |
675 | #define RELAX_MIPS16_DSLOT(i) (((i) & 0x400) != 0) | |
676 | #define RELAX_MIPS16_JAL_DSLOT(i) (((i) & 0x800) != 0) | |
677 | #define RELAX_MIPS16_EXTENDED(i) (((i) & 0x1000) != 0) | |
678 | #define RELAX_MIPS16_MARK_EXTENDED(i) ((i) | 0x1000) | |
679 | #define RELAX_MIPS16_CLEAR_EXTENDED(i) ((i) &~ 0x1000) | |
680 | #define RELAX_MIPS16_LONG_BRANCH(i) (((i) & 0x2000) != 0) | |
681 | #define RELAX_MIPS16_MARK_LONG_BRANCH(i) ((i) | 0x2000) | |
682 | #define RELAX_MIPS16_CLEAR_LONG_BRANCH(i) ((i) &~ 0x2000) | |
683 | \f | |
684 | /* Prototypes for static functions. */ | |
685 | ||
686 | #ifdef __STDC__ | |
687 | #define internalError() \ | |
688 | as_fatal (_("internal Error, line %d, %s"), __LINE__, __FILE__) | |
689 | #else | |
690 | #define internalError() as_fatal (_("MIPS internal Error")); | |
691 | #endif | |
692 | ||
693 | enum mips_regclass { MIPS_GR_REG, MIPS_FP_REG, MIPS16_REG }; | |
694 | ||
695 | static int insn_uses_reg PARAMS ((struct mips_cl_insn *ip, | |
696 | unsigned int reg, enum mips_regclass class)); | |
156c2f8b | 697 | static int reg_needs_delay PARAMS ((unsigned int)); |
252b5132 RH |
698 | static void mips16_mark_labels PARAMS ((void)); |
699 | static void append_insn PARAMS ((char *place, | |
700 | struct mips_cl_insn * ip, | |
701 | expressionS * p, | |
f6688943 | 702 | bfd_reloc_code_real_type *r, |
252b5132 RH |
703 | boolean)); |
704 | static void mips_no_prev_insn PARAMS ((int)); | |
705 | static void mips_emit_delays PARAMS ((boolean)); | |
706 | #ifdef USE_STDARG | |
707 | static void macro_build PARAMS ((char *place, int *counter, expressionS * ep, | |
708 | const char *name, const char *fmt, | |
709 | ...)); | |
710 | #else | |
711 | static void macro_build (); | |
712 | #endif | |
713 | static void mips16_macro_build PARAMS ((char *, int *, expressionS *, | |
714 | const char *, const char *, | |
715 | va_list)); | |
438c16b8 | 716 | static void macro_build_jalr PARAMS ((int, expressionS *)); |
252b5132 RH |
717 | static void macro_build_lui PARAMS ((char *place, int *counter, |
718 | expressionS * ep, int regnum)); | |
719 | static void set_at PARAMS ((int *counter, int reg, int unsignedp)); | |
720 | static void check_absolute_expr PARAMS ((struct mips_cl_insn * ip, | |
721 | expressionS *)); | |
722 | static void load_register PARAMS ((int *, int, expressionS *, int)); | |
c9914766 | 723 | static void load_address PARAMS ((int *, int, expressionS *, int *)); |
ea1fb5dc | 724 | static void move_register PARAMS ((int *, int, int)); |
252b5132 RH |
725 | static void macro PARAMS ((struct mips_cl_insn * ip)); |
726 | static void mips16_macro PARAMS ((struct mips_cl_insn * ip)); | |
727 | #ifdef LOSING_COMPILER | |
728 | static void macro2 PARAMS ((struct mips_cl_insn * ip)); | |
729 | #endif | |
730 | static void mips_ip PARAMS ((char *str, struct mips_cl_insn * ip)); | |
731 | static void mips16_ip PARAMS ((char *str, struct mips_cl_insn * ip)); | |
732 | static void mips16_immed PARAMS ((char *, unsigned int, int, offsetT, boolean, | |
733 | boolean, boolean, unsigned long *, | |
734 | boolean *, unsigned short *)); | |
394f9b3a | 735 | static int my_getPercentOp PARAMS ((char **, unsigned int *, int *)); |
ad8d3bb3 TS |
736 | static int my_getSmallParser PARAMS ((char **, unsigned int *, int *)); |
737 | static int my_getSmallExpression PARAMS ((expressionS *, char *)); | |
738 | static void my_getExpression PARAMS ((expressionS *, char *)); | |
ae948b86 | 739 | #ifdef OBJ_ELF |
e013f690 | 740 | static int support_64bit_objects PARAMS((void)); |
ae948b86 | 741 | #endif |
316f5878 | 742 | static void mips_set_option_string PARAMS ((const char **, const char *)); |
252b5132 RH |
743 | static symbolS *get_symbol PARAMS ((void)); |
744 | static void mips_align PARAMS ((int to, int fill, symbolS *label)); | |
745 | static void s_align PARAMS ((int)); | |
746 | static void s_change_sec PARAMS ((int)); | |
cca86cc8 | 747 | static void s_change_section PARAMS ((int)); |
252b5132 RH |
748 | static void s_cons PARAMS ((int)); |
749 | static void s_float_cons PARAMS ((int)); | |
750 | static void s_mips_globl PARAMS ((int)); | |
751 | static void s_option PARAMS ((int)); | |
752 | static void s_mipsset PARAMS ((int)); | |
753 | static void s_abicalls PARAMS ((int)); | |
754 | static void s_cpload PARAMS ((int)); | |
6478892d TS |
755 | static void s_cpsetup PARAMS ((int)); |
756 | static void s_cplocal PARAMS ((int)); | |
252b5132 | 757 | static void s_cprestore PARAMS ((int)); |
6478892d TS |
758 | static void s_cpreturn PARAMS ((int)); |
759 | static void s_gpvalue PARAMS ((int)); | |
252b5132 RH |
760 | static void s_gpword PARAMS ((int)); |
761 | static void s_cpadd PARAMS ((int)); | |
762 | static void s_insn PARAMS ((int)); | |
763 | static void md_obj_begin PARAMS ((void)); | |
764 | static void md_obj_end PARAMS ((void)); | |
765 | static long get_number PARAMS ((void)); | |
766 | static void s_mips_ent PARAMS ((int)); | |
767 | static void s_mips_end PARAMS ((int)); | |
768 | static void s_mips_frame PARAMS ((int)); | |
769 | static void s_mips_mask PARAMS ((int)); | |
770 | static void s_mips_stab PARAMS ((int)); | |
771 | static void s_mips_weakext PARAMS ((int)); | |
c5dd6aab DJ |
772 | static void s_mips_file PARAMS ((int)); |
773 | static void s_mips_loc PARAMS ((int)); | |
252b5132 | 774 | static int mips16_extended_frag PARAMS ((fragS *, asection *, long)); |
252b5132 | 775 | static int validate_mips_insn PARAMS ((const struct mips_opcode *)); |
316f5878 | 776 | static void show PARAMS ((FILE *, const char *, int *, int *)); |
add55e1f RS |
777 | #ifdef OBJ_ELF |
778 | static int mips_need_elf_addend_fixup PARAMS ((fixS *)); | |
779 | #endif | |
e7af610e | 780 | |
ad8d3bb3 | 781 | /* Return values of my_getSmallExpression(). */ |
fb1b3232 | 782 | |
ad8d3bb3 | 783 | enum small_ex_type |
fb1b3232 TS |
784 | { |
785 | S_EX_NONE = 0, | |
ad8d3bb3 TS |
786 | S_EX_REGISTER, |
787 | ||
788 | /* Direct relocation creation by %percent_op(). */ | |
789 | S_EX_HALF, | |
fb1b3232 | 790 | S_EX_HI, |
ad8d3bb3 TS |
791 | S_EX_LO, |
792 | S_EX_GP_REL, | |
793 | S_EX_GOT, | |
794 | S_EX_CALL16, | |
795 | S_EX_GOT_DISP, | |
796 | S_EX_GOT_PAGE, | |
797 | S_EX_GOT_OFST, | |
798 | S_EX_GOT_HI, | |
799 | S_EX_GOT_LO, | |
800 | S_EX_NEG, | |
fb1b3232 TS |
801 | S_EX_HIGHER, |
802 | S_EX_HIGHEST, | |
ad8d3bb3 TS |
803 | S_EX_CALL_HI, |
804 | S_EX_CALL_LO | |
fb1b3232 TS |
805 | }; |
806 | ||
e7af610e NC |
807 | /* Table and functions used to map between CPU/ISA names, and |
808 | ISA levels, and CPU numbers. */ | |
809 | ||
e972090a NC |
810 | struct mips_cpu_info |
811 | { | |
e7af610e NC |
812 | const char *name; /* CPU or ISA name. */ |
813 | int is_isa; /* Is this an ISA? (If 0, a CPU.) */ | |
814 | int isa; /* ISA level. */ | |
815 | int cpu; /* CPU number (default CPU if ISA). */ | |
816 | }; | |
817 | ||
316f5878 RS |
818 | static void mips_set_architecture PARAMS ((const struct mips_cpu_info *)); |
819 | static void mips_set_tune PARAMS ((const struct mips_cpu_info *)); | |
820 | static boolean mips_strict_matching_cpu_name_p PARAMS ((const char *, | |
821 | const char *)); | |
822 | static boolean mips_matching_cpu_name_p PARAMS ((const char *, const char *)); | |
823 | static const struct mips_cpu_info *mips_parse_cpu PARAMS ((const char *, | |
824 | const char *)); | |
e7af610e | 825 | static const struct mips_cpu_info *mips_cpu_info_from_isa PARAMS ((int)); |
252b5132 RH |
826 | \f |
827 | /* Pseudo-op table. | |
828 | ||
829 | The following pseudo-ops from the Kane and Heinrich MIPS book | |
830 | should be defined here, but are currently unsupported: .alias, | |
831 | .galive, .gjaldef, .gjrlive, .livereg, .noalias. | |
832 | ||
833 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
834 | specific to the type of debugging information being generated, and | |
835 | should be defined by the object format: .aent, .begin, .bend, | |
836 | .bgnb, .end, .endb, .ent, .fmask, .frame, .loc, .mask, .verstamp, | |
837 | .vreg. | |
838 | ||
839 | The following pseudo-ops from the Kane and Heinrich MIPS book are | |
840 | not MIPS CPU specific, but are also not specific to the object file | |
841 | format. This file is probably the best place to define them, but | |
842 | they are not currently supported: .asm0, .endr, .lab, .repeat, | |
843 | .struct. */ | |
844 | ||
e972090a NC |
845 | static const pseudo_typeS mips_pseudo_table[] = |
846 | { | |
beae10d5 | 847 | /* MIPS specific pseudo-ops. */ |
252b5132 RH |
848 | {"option", s_option, 0}, |
849 | {"set", s_mipsset, 0}, | |
850 | {"rdata", s_change_sec, 'r'}, | |
851 | {"sdata", s_change_sec, 's'}, | |
852 | {"livereg", s_ignore, 0}, | |
853 | {"abicalls", s_abicalls, 0}, | |
854 | {"cpload", s_cpload, 0}, | |
6478892d TS |
855 | {"cpsetup", s_cpsetup, 0}, |
856 | {"cplocal", s_cplocal, 0}, | |
252b5132 | 857 | {"cprestore", s_cprestore, 0}, |
6478892d TS |
858 | {"cpreturn", s_cpreturn, 0}, |
859 | {"gpvalue", s_gpvalue, 0}, | |
252b5132 RH |
860 | {"gpword", s_gpword, 0}, |
861 | {"cpadd", s_cpadd, 0}, | |
862 | {"insn", s_insn, 0}, | |
863 | ||
beae10d5 | 864 | /* Relatively generic pseudo-ops that happen to be used on MIPS |
252b5132 RH |
865 | chips. */ |
866 | {"asciiz", stringer, 1}, | |
867 | {"bss", s_change_sec, 'b'}, | |
868 | {"err", s_err, 0}, | |
869 | {"half", s_cons, 1}, | |
870 | {"dword", s_cons, 3}, | |
871 | {"weakext", s_mips_weakext, 0}, | |
872 | ||
beae10d5 | 873 | /* These pseudo-ops are defined in read.c, but must be overridden |
252b5132 RH |
874 | here for one reason or another. */ |
875 | {"align", s_align, 0}, | |
876 | {"byte", s_cons, 0}, | |
877 | {"data", s_change_sec, 'd'}, | |
878 | {"double", s_float_cons, 'd'}, | |
879 | {"float", s_float_cons, 'f'}, | |
880 | {"globl", s_mips_globl, 0}, | |
881 | {"global", s_mips_globl, 0}, | |
882 | {"hword", s_cons, 1}, | |
883 | {"int", s_cons, 2}, | |
884 | {"long", s_cons, 2}, | |
885 | {"octa", s_cons, 4}, | |
886 | {"quad", s_cons, 3}, | |
cca86cc8 | 887 | {"section", s_change_section, 0}, |
252b5132 RH |
888 | {"short", s_cons, 1}, |
889 | {"single", s_float_cons, 'f'}, | |
890 | {"stabn", s_mips_stab, 'n'}, | |
891 | {"text", s_change_sec, 't'}, | |
892 | {"word", s_cons, 2}, | |
add56521 | 893 | |
add56521 | 894 | { "extern", ecoff_directive_extern, 0}, |
add56521 | 895 | |
43841e91 | 896 | { NULL, NULL, 0 }, |
252b5132 RH |
897 | }; |
898 | ||
e972090a NC |
899 | static const pseudo_typeS mips_nonecoff_pseudo_table[] = |
900 | { | |
beae10d5 KH |
901 | /* These pseudo-ops should be defined by the object file format. |
902 | However, a.out doesn't support them, so we have versions here. */ | |
252b5132 RH |
903 | {"aent", s_mips_ent, 1}, |
904 | {"bgnb", s_ignore, 0}, | |
905 | {"end", s_mips_end, 0}, | |
906 | {"endb", s_ignore, 0}, | |
907 | {"ent", s_mips_ent, 0}, | |
c5dd6aab | 908 | {"file", s_mips_file, 0}, |
252b5132 RH |
909 | {"fmask", s_mips_mask, 'F'}, |
910 | {"frame", s_mips_frame, 0}, | |
c5dd6aab | 911 | {"loc", s_mips_loc, 0}, |
252b5132 RH |
912 | {"mask", s_mips_mask, 'R'}, |
913 | {"verstamp", s_ignore, 0}, | |
43841e91 | 914 | { NULL, NULL, 0 }, |
252b5132 RH |
915 | }; |
916 | ||
917 | extern void pop_insert PARAMS ((const pseudo_typeS *)); | |
918 | ||
919 | void | |
920 | mips_pop_insert () | |
921 | { | |
922 | pop_insert (mips_pseudo_table); | |
923 | if (! ECOFF_DEBUGGING) | |
924 | pop_insert (mips_nonecoff_pseudo_table); | |
925 | } | |
926 | \f | |
927 | /* Symbols labelling the current insn. */ | |
928 | ||
e972090a NC |
929 | struct insn_label_list |
930 | { | |
252b5132 RH |
931 | struct insn_label_list *next; |
932 | symbolS *label; | |
933 | }; | |
934 | ||
935 | static struct insn_label_list *insn_labels; | |
936 | static struct insn_label_list *free_insn_labels; | |
937 | ||
938 | static void mips_clear_insn_labels PARAMS ((void)); | |
939 | ||
940 | static inline void | |
941 | mips_clear_insn_labels () | |
942 | { | |
943 | register struct insn_label_list **pl; | |
944 | ||
945 | for (pl = &free_insn_labels; *pl != NULL; pl = &(*pl)->next) | |
946 | ; | |
947 | *pl = insn_labels; | |
948 | insn_labels = NULL; | |
949 | } | |
950 | \f | |
951 | static char *expr_end; | |
952 | ||
953 | /* Expressions which appear in instructions. These are set by | |
954 | mips_ip. */ | |
955 | ||
956 | static expressionS imm_expr; | |
957 | static expressionS offset_expr; | |
958 | ||
959 | /* Relocs associated with imm_expr and offset_expr. */ | |
960 | ||
f6688943 TS |
961 | static bfd_reloc_code_real_type imm_reloc[3] |
962 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
963 | static bfd_reloc_code_real_type offset_reloc[3] | |
964 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 RH |
965 | |
966 | /* This is set by mips_ip if imm_reloc is an unmatched HI16_S reloc. */ | |
967 | ||
968 | static boolean imm_unmatched_hi; | |
969 | ||
970 | /* These are set by mips16_ip if an explicit extension is used. */ | |
971 | ||
972 | static boolean mips16_small, mips16_ext; | |
973 | ||
ecb4347a DJ |
974 | /* The pdr segment for per procedure frame/regmask info. Not used for |
975 | ECOFF debugging. */ | |
252b5132 RH |
976 | |
977 | static segT pdr_seg; | |
252b5132 | 978 | |
e013f690 TS |
979 | /* The default target format to use. */ |
980 | ||
981 | const char * | |
982 | mips_target_format () | |
983 | { | |
984 | switch (OUTPUT_FLAVOR) | |
985 | { | |
986 | case bfd_target_aout_flavour: | |
987 | return target_big_endian ? "a.out-mips-big" : "a.out-mips-little"; | |
988 | case bfd_target_ecoff_flavour: | |
989 | return target_big_endian ? "ecoff-bigmips" : ECOFF_LITTLE_FORMAT; | |
990 | case bfd_target_coff_flavour: | |
991 | return "pe-mips"; | |
992 | case bfd_target_elf_flavour: | |
993 | #ifdef TE_TMIPS | |
cfe86eaa | 994 | /* This is traditional mips. */ |
e013f690 | 995 | return (target_big_endian |
cfe86eaa TS |
996 | ? (HAVE_64BIT_OBJECTS |
997 | ? "elf64-tradbigmips" | |
998 | : (HAVE_NEWABI | |
999 | ? "elf32-ntradbigmips" : "elf32-tradbigmips")) | |
1000 | : (HAVE_64BIT_OBJECTS | |
1001 | ? "elf64-tradlittlemips" | |
1002 | : (HAVE_NEWABI | |
1003 | ? "elf32-ntradlittlemips" : "elf32-tradlittlemips"))); | |
e013f690 TS |
1004 | #else |
1005 | return (target_big_endian | |
cfe86eaa TS |
1006 | ? (HAVE_64BIT_OBJECTS |
1007 | ? "elf64-bigmips" | |
1008 | : (HAVE_NEWABI | |
1009 | ? "elf32-nbigmips" : "elf32-bigmips")) | |
1010 | : (HAVE_64BIT_OBJECTS | |
1011 | ? "elf64-littlemips" | |
1012 | : (HAVE_NEWABI | |
1013 | ? "elf32-nlittlemips" : "elf32-littlemips"))); | |
e013f690 TS |
1014 | #endif |
1015 | default: | |
1016 | abort (); | |
1017 | return NULL; | |
1018 | } | |
1019 | } | |
1020 | ||
156c2f8b NC |
1021 | /* This function is called once, at assembler startup time. It should |
1022 | set up all the tables, etc. that the MD part of the assembler will need. */ | |
1023 | ||
252b5132 RH |
1024 | void |
1025 | md_begin () | |
1026 | { | |
252b5132 | 1027 | register const char *retval = NULL; |
156c2f8b | 1028 | int i = 0; |
252b5132 | 1029 | int broken = 0; |
1f25f5d3 | 1030 | |
ec68c924 | 1031 | if (! bfd_set_arch_mach (stdoutput, bfd_arch_mips, mips_arch)) |
252b5132 RH |
1032 | as_warn (_("Could not set architecture and machine")); |
1033 | ||
252b5132 RH |
1034 | op_hash = hash_new (); |
1035 | ||
1036 | for (i = 0; i < NUMOPCODES;) | |
1037 | { | |
1038 | const char *name = mips_opcodes[i].name; | |
1039 | ||
1040 | retval = hash_insert (op_hash, name, (PTR) &mips_opcodes[i]); | |
1041 | if (retval != NULL) | |
1042 | { | |
1043 | fprintf (stderr, _("internal error: can't hash `%s': %s\n"), | |
1044 | mips_opcodes[i].name, retval); | |
1045 | /* Probably a memory allocation problem? Give up now. */ | |
1046 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
1047 | } | |
1048 | do | |
1049 | { | |
1050 | if (mips_opcodes[i].pinfo != INSN_MACRO) | |
1051 | { | |
1052 | if (!validate_mips_insn (&mips_opcodes[i])) | |
1053 | broken = 1; | |
1054 | } | |
1055 | ++i; | |
1056 | } | |
1057 | while ((i < NUMOPCODES) && !strcmp (mips_opcodes[i].name, name)); | |
1058 | } | |
1059 | ||
1060 | mips16_op_hash = hash_new (); | |
1061 | ||
1062 | i = 0; | |
1063 | while (i < bfd_mips16_num_opcodes) | |
1064 | { | |
1065 | const char *name = mips16_opcodes[i].name; | |
1066 | ||
1067 | retval = hash_insert (mips16_op_hash, name, (PTR) &mips16_opcodes[i]); | |
1068 | if (retval != NULL) | |
1069 | as_fatal (_("internal: can't hash `%s': %s"), | |
1070 | mips16_opcodes[i].name, retval); | |
1071 | do | |
1072 | { | |
1073 | if (mips16_opcodes[i].pinfo != INSN_MACRO | |
1074 | && ((mips16_opcodes[i].match & mips16_opcodes[i].mask) | |
1075 | != mips16_opcodes[i].match)) | |
1076 | { | |
1077 | fprintf (stderr, _("internal error: bad mips16 opcode: %s %s\n"), | |
1078 | mips16_opcodes[i].name, mips16_opcodes[i].args); | |
1079 | broken = 1; | |
1080 | } | |
1081 | ++i; | |
1082 | } | |
1083 | while (i < bfd_mips16_num_opcodes | |
1084 | && strcmp (mips16_opcodes[i].name, name) == 0); | |
1085 | } | |
1086 | ||
1087 | if (broken) | |
1088 | as_fatal (_("Broken assembler. No assembly attempted.")); | |
1089 | ||
1090 | /* We add all the general register names to the symbol table. This | |
1091 | helps us detect invalid uses of them. */ | |
1092 | for (i = 0; i < 32; i++) | |
1093 | { | |
1094 | char buf[5]; | |
1095 | ||
1096 | sprintf (buf, "$%d", i); | |
1097 | symbol_table_insert (symbol_new (buf, reg_section, i, | |
1098 | &zero_address_frag)); | |
1099 | } | |
76db943d TS |
1100 | symbol_table_insert (symbol_new ("$ra", reg_section, RA, |
1101 | &zero_address_frag)); | |
252b5132 RH |
1102 | symbol_table_insert (symbol_new ("$fp", reg_section, FP, |
1103 | &zero_address_frag)); | |
1104 | symbol_table_insert (symbol_new ("$sp", reg_section, SP, | |
1105 | &zero_address_frag)); | |
1106 | symbol_table_insert (symbol_new ("$gp", reg_section, GP, | |
1107 | &zero_address_frag)); | |
1108 | symbol_table_insert (symbol_new ("$at", reg_section, AT, | |
1109 | &zero_address_frag)); | |
1110 | symbol_table_insert (symbol_new ("$kt0", reg_section, KT0, | |
1111 | &zero_address_frag)); | |
1112 | symbol_table_insert (symbol_new ("$kt1", reg_section, KT1, | |
1113 | &zero_address_frag)); | |
85b51719 TS |
1114 | symbol_table_insert (symbol_new ("$zero", reg_section, ZERO, |
1115 | &zero_address_frag)); | |
252b5132 RH |
1116 | symbol_table_insert (symbol_new ("$pc", reg_section, -1, |
1117 | &zero_address_frag)); | |
1118 | ||
1119 | mips_no_prev_insn (false); | |
1120 | ||
1121 | mips_gprmask = 0; | |
1122 | mips_cprmask[0] = 0; | |
1123 | mips_cprmask[1] = 0; | |
1124 | mips_cprmask[2] = 0; | |
1125 | mips_cprmask[3] = 0; | |
1126 | ||
1127 | /* set the default alignment for the text section (2**2) */ | |
1128 | record_alignment (text_section, 2); | |
1129 | ||
1130 | if (USE_GLOBAL_POINTER_OPT) | |
1131 | bfd_set_gp_size (stdoutput, g_switch_value); | |
1132 | ||
1133 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
1134 | { | |
1135 | /* On a native system, sections must be aligned to 16 byte | |
1136 | boundaries. When configured for an embedded ELF target, we | |
1137 | don't bother. */ | |
1138 | if (strcmp (TARGET_OS, "elf") != 0) | |
1139 | { | |
1140 | (void) bfd_set_section_alignment (stdoutput, text_section, 4); | |
1141 | (void) bfd_set_section_alignment (stdoutput, data_section, 4); | |
1142 | (void) bfd_set_section_alignment (stdoutput, bss_section, 4); | |
1143 | } | |
1144 | ||
1145 | /* Create a .reginfo section for register masks and a .mdebug | |
1146 | section for debugging information. */ | |
1147 | { | |
1148 | segT seg; | |
1149 | subsegT subseg; | |
1150 | flagword flags; | |
1151 | segT sec; | |
1152 | ||
1153 | seg = now_seg; | |
1154 | subseg = now_subseg; | |
1155 | ||
1156 | /* The ABI says this section should be loaded so that the | |
1157 | running program can access it. However, we don't load it | |
1158 | if we are configured for an embedded target */ | |
1159 | flags = SEC_READONLY | SEC_DATA; | |
1160 | if (strcmp (TARGET_OS, "elf") != 0) | |
1161 | flags |= SEC_ALLOC | SEC_LOAD; | |
1162 | ||
316f5878 | 1163 | if (mips_abi != N64_ABI) |
252b5132 RH |
1164 | { |
1165 | sec = subseg_new (".reginfo", (subsegT) 0); | |
1166 | ||
195325d2 TS |
1167 | bfd_set_section_flags (stdoutput, sec, flags); |
1168 | bfd_set_section_alignment (stdoutput, sec, HAVE_NEWABI ? 3 : 2); | |
bdaaa2e1 | 1169 | |
252b5132 RH |
1170 | #ifdef OBJ_ELF |
1171 | mips_regmask_frag = frag_more (sizeof (Elf32_External_RegInfo)); | |
1172 | #endif | |
1173 | } | |
1174 | else | |
1175 | { | |
1176 | /* The 64-bit ABI uses a .MIPS.options section rather than | |
1177 | .reginfo section. */ | |
1178 | sec = subseg_new (".MIPS.options", (subsegT) 0); | |
195325d2 TS |
1179 | bfd_set_section_flags (stdoutput, sec, flags); |
1180 | bfd_set_section_alignment (stdoutput, sec, 3); | |
252b5132 RH |
1181 | |
1182 | #ifdef OBJ_ELF | |
1183 | /* Set up the option header. */ | |
1184 | { | |
1185 | Elf_Internal_Options opthdr; | |
1186 | char *f; | |
1187 | ||
1188 | opthdr.kind = ODK_REGINFO; | |
1189 | opthdr.size = (sizeof (Elf_External_Options) | |
1190 | + sizeof (Elf64_External_RegInfo)); | |
1191 | opthdr.section = 0; | |
1192 | opthdr.info = 0; | |
1193 | f = frag_more (sizeof (Elf_External_Options)); | |
1194 | bfd_mips_elf_swap_options_out (stdoutput, &opthdr, | |
1195 | (Elf_External_Options *) f); | |
1196 | ||
1197 | mips_regmask_frag = frag_more (sizeof (Elf64_External_RegInfo)); | |
1198 | } | |
1199 | #endif | |
1200 | } | |
1201 | ||
1202 | if (ECOFF_DEBUGGING) | |
1203 | { | |
1204 | sec = subseg_new (".mdebug", (subsegT) 0); | |
1205 | (void) bfd_set_section_flags (stdoutput, sec, | |
1206 | SEC_HAS_CONTENTS | SEC_READONLY); | |
1207 | (void) bfd_set_section_alignment (stdoutput, sec, 2); | |
1208 | } | |
ecb4347a DJ |
1209 | #ifdef OBJ_ELF |
1210 | else if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
1211 | { | |
1212 | pdr_seg = subseg_new (".pdr", (subsegT) 0); | |
1213 | (void) bfd_set_section_flags (stdoutput, pdr_seg, | |
1214 | SEC_READONLY | SEC_RELOC | |
1215 | | SEC_DEBUGGING); | |
1216 | (void) bfd_set_section_alignment (stdoutput, pdr_seg, 2); | |
1217 | } | |
252b5132 RH |
1218 | #endif |
1219 | ||
1220 | subseg_set (seg, subseg); | |
1221 | } | |
1222 | } | |
1223 | ||
1224 | if (! ECOFF_DEBUGGING) | |
1225 | md_obj_begin (); | |
1226 | } | |
1227 | ||
1228 | void | |
1229 | md_mips_end () | |
1230 | { | |
1231 | if (! ECOFF_DEBUGGING) | |
1232 | md_obj_end (); | |
1233 | } | |
1234 | ||
1235 | void | |
1236 | md_assemble (str) | |
1237 | char *str; | |
1238 | { | |
1239 | struct mips_cl_insn insn; | |
f6688943 TS |
1240 | bfd_reloc_code_real_type unused_reloc[3] |
1241 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 RH |
1242 | |
1243 | imm_expr.X_op = O_absent; | |
252b5132 RH |
1244 | imm_unmatched_hi = false; |
1245 | offset_expr.X_op = O_absent; | |
f6688943 TS |
1246 | imm_reloc[0] = BFD_RELOC_UNUSED; |
1247 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
1248 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
1249 | offset_reloc[0] = BFD_RELOC_UNUSED; | |
1250 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
1251 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
1252 | |
1253 | if (mips_opts.mips16) | |
1254 | mips16_ip (str, &insn); | |
1255 | else | |
1256 | { | |
1257 | mips_ip (str, &insn); | |
beae10d5 KH |
1258 | DBG ((_("returned from mips_ip(%s) insn_opcode = 0x%x\n"), |
1259 | str, insn.insn_opcode)); | |
252b5132 RH |
1260 | } |
1261 | ||
1262 | if (insn_error) | |
1263 | { | |
1264 | as_bad ("%s `%s'", insn_error, str); | |
1265 | return; | |
1266 | } | |
1267 | ||
1268 | if (insn.insn_mo->pinfo == INSN_MACRO) | |
1269 | { | |
1270 | if (mips_opts.mips16) | |
1271 | mips16_macro (&insn); | |
1272 | else | |
1273 | macro (&insn); | |
1274 | } | |
1275 | else | |
1276 | { | |
1277 | if (imm_expr.X_op != O_absent) | |
c4e7957c | 1278 | append_insn (NULL, &insn, &imm_expr, imm_reloc, imm_unmatched_hi); |
252b5132 | 1279 | else if (offset_expr.X_op != O_absent) |
c4e7957c | 1280 | append_insn (NULL, &insn, &offset_expr, offset_reloc, false); |
252b5132 | 1281 | else |
c4e7957c | 1282 | append_insn (NULL, &insn, NULL, unused_reloc, false); |
252b5132 RH |
1283 | } |
1284 | } | |
1285 | ||
1286 | /* See whether instruction IP reads register REG. CLASS is the type | |
1287 | of register. */ | |
1288 | ||
1289 | static int | |
1290 | insn_uses_reg (ip, reg, class) | |
1291 | struct mips_cl_insn *ip; | |
1292 | unsigned int reg; | |
1293 | enum mips_regclass class; | |
1294 | { | |
1295 | if (class == MIPS16_REG) | |
1296 | { | |
1297 | assert (mips_opts.mips16); | |
1298 | reg = mips16_to_32_reg_map[reg]; | |
1299 | class = MIPS_GR_REG; | |
1300 | } | |
1301 | ||
85b51719 TS |
1302 | /* Don't report on general register ZERO, since it never changes. */ |
1303 | if (class == MIPS_GR_REG && reg == ZERO) | |
252b5132 RH |
1304 | return 0; |
1305 | ||
1306 | if (class == MIPS_FP_REG) | |
1307 | { | |
1308 | assert (! mips_opts.mips16); | |
1309 | /* If we are called with either $f0 or $f1, we must check $f0. | |
1310 | This is not optimal, because it will introduce an unnecessary | |
1311 | NOP between "lwc1 $f0" and "swc1 $f1". To fix this we would | |
1312 | need to distinguish reading both $f0 and $f1 or just one of | |
1313 | them. Note that we don't have to check the other way, | |
1314 | because there is no instruction that sets both $f0 and $f1 | |
1315 | and requires a delay. */ | |
1316 | if ((ip->insn_mo->pinfo & INSN_READ_FPR_S) | |
1317 | && ((((ip->insn_opcode >> OP_SH_FS) & OP_MASK_FS) &~(unsigned)1) | |
1318 | == (reg &~ (unsigned) 1))) | |
1319 | return 1; | |
1320 | if ((ip->insn_mo->pinfo & INSN_READ_FPR_T) | |
1321 | && ((((ip->insn_opcode >> OP_SH_FT) & OP_MASK_FT) &~(unsigned)1) | |
1322 | == (reg &~ (unsigned) 1))) | |
1323 | return 1; | |
1324 | } | |
1325 | else if (! mips_opts.mips16) | |
1326 | { | |
1327 | if ((ip->insn_mo->pinfo & INSN_READ_GPR_S) | |
1328 | && ((ip->insn_opcode >> OP_SH_RS) & OP_MASK_RS) == reg) | |
1329 | return 1; | |
1330 | if ((ip->insn_mo->pinfo & INSN_READ_GPR_T) | |
1331 | && ((ip->insn_opcode >> OP_SH_RT) & OP_MASK_RT) == reg) | |
1332 | return 1; | |
1333 | } | |
1334 | else | |
1335 | { | |
1336 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_X) | |
1337 | && (mips16_to_32_reg_map[((ip->insn_opcode >> MIPS16OP_SH_RX) | |
1338 | & MIPS16OP_MASK_RX)] | |
1339 | == reg)) | |
1340 | return 1; | |
1341 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_Y) | |
1342 | && (mips16_to_32_reg_map[((ip->insn_opcode >> MIPS16OP_SH_RY) | |
1343 | & MIPS16OP_MASK_RY)] | |
1344 | == reg)) | |
1345 | return 1; | |
1346 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_Z) | |
1347 | && (mips16_to_32_reg_map[((ip->insn_opcode >> MIPS16OP_SH_MOVE32Z) | |
1348 | & MIPS16OP_MASK_MOVE32Z)] | |
1349 | == reg)) | |
1350 | return 1; | |
1351 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_T) && reg == TREG) | |
1352 | return 1; | |
1353 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_SP) && reg == SP) | |
1354 | return 1; | |
1355 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_31) && reg == RA) | |
1356 | return 1; | |
1357 | if ((ip->insn_mo->pinfo & MIPS16_INSN_READ_GPR_X) | |
1358 | && ((ip->insn_opcode >> MIPS16OP_SH_REGR32) | |
1359 | & MIPS16OP_MASK_REGR32) == reg) | |
1360 | return 1; | |
1361 | } | |
1362 | ||
1363 | return 0; | |
1364 | } | |
1365 | ||
1366 | /* This function returns true if modifying a register requires a | |
1367 | delay. */ | |
1368 | ||
1369 | static int | |
1370 | reg_needs_delay (reg) | |
156c2f8b | 1371 | unsigned int reg; |
252b5132 RH |
1372 | { |
1373 | unsigned long prev_pinfo; | |
1374 | ||
1375 | prev_pinfo = prev_insn.insn_mo->pinfo; | |
1376 | if (! mips_opts.noreorder | |
9ce8a5dd | 1377 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
1378 | && ((prev_pinfo & INSN_LOAD_COPROC_DELAY) |
1379 | || (! gpr_interlocks | |
1380 | && (prev_pinfo & INSN_LOAD_MEMORY_DELAY)))) | |
1381 | { | |
1382 | /* A load from a coprocessor or from memory. All load | |
1383 | delays delay the use of general register rt for one | |
1384 | instruction on the r3000. The r6000 and r4000 use | |
1385 | interlocks. */ | |
bdaaa2e1 | 1386 | /* Itbl support may require additional care here. */ |
252b5132 RH |
1387 | know (prev_pinfo & INSN_WRITE_GPR_T); |
1388 | if (reg == ((prev_insn.insn_opcode >> OP_SH_RT) & OP_MASK_RT)) | |
1389 | return 1; | |
1390 | } | |
1391 | ||
1392 | return 0; | |
1393 | } | |
1394 | ||
1395 | /* Mark instruction labels in mips16 mode. This permits the linker to | |
1396 | handle them specially, such as generating jalx instructions when | |
1397 | needed. We also make them odd for the duration of the assembly, in | |
1398 | order to generate the right sort of code. We will make them even | |
1399 | in the adjust_symtab routine, while leaving them marked. This is | |
1400 | convenient for the debugger and the disassembler. The linker knows | |
1401 | to make them odd again. */ | |
1402 | ||
1403 | static void | |
1404 | mips16_mark_labels () | |
1405 | { | |
1406 | if (mips_opts.mips16) | |
1407 | { | |
1408 | struct insn_label_list *l; | |
98aa84af | 1409 | valueT val; |
252b5132 RH |
1410 | |
1411 | for (l = insn_labels; l != NULL; l = l->next) | |
1412 | { | |
1413 | #ifdef OBJ_ELF | |
1414 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
1415 | S_SET_OTHER (l->label, STO_MIPS16); | |
1416 | #endif | |
98aa84af AM |
1417 | val = S_GET_VALUE (l->label); |
1418 | if ((val & 1) == 0) | |
1419 | S_SET_VALUE (l->label, val + 1); | |
252b5132 RH |
1420 | } |
1421 | } | |
1422 | } | |
1423 | ||
1424 | /* Output an instruction. PLACE is where to put the instruction; if | |
1425 | it is NULL, this uses frag_more to get room. IP is the instruction | |
1426 | information. ADDRESS_EXPR is an operand of the instruction to be | |
1427 | used with RELOC_TYPE. */ | |
1428 | ||
1429 | static void | |
1430 | append_insn (place, ip, address_expr, reloc_type, unmatched_hi) | |
1431 | char *place; | |
1432 | struct mips_cl_insn *ip; | |
1433 | expressionS *address_expr; | |
f6688943 | 1434 | bfd_reloc_code_real_type *reloc_type; |
252b5132 RH |
1435 | boolean unmatched_hi; |
1436 | { | |
1437 | register unsigned long prev_pinfo, pinfo; | |
1438 | char *f; | |
f6688943 | 1439 | fixS *fixp[3]; |
252b5132 RH |
1440 | int nops = 0; |
1441 | ||
1442 | /* Mark instruction labels in mips16 mode. */ | |
f9419b05 | 1443 | mips16_mark_labels (); |
252b5132 RH |
1444 | |
1445 | prev_pinfo = prev_insn.insn_mo->pinfo; | |
1446 | pinfo = ip->insn_mo->pinfo; | |
1447 | ||
1448 | if (place == NULL && (! mips_opts.noreorder || prev_nop_frag != NULL)) | |
1449 | { | |
1450 | int prev_prev_nop; | |
1451 | ||
1452 | /* If the previous insn required any delay slots, see if we need | |
1453 | to insert a NOP or two. There are eight kinds of possible | |
1454 | hazards, of which an instruction can have at most one type. | |
1455 | (1) a load from memory delay | |
1456 | (2) a load from a coprocessor delay | |
1457 | (3) an unconditional branch delay | |
1458 | (4) a conditional branch delay | |
1459 | (5) a move to coprocessor register delay | |
1460 | (6) a load coprocessor register from memory delay | |
1461 | (7) a coprocessor condition code delay | |
1462 | (8) a HI/LO special register delay | |
1463 | ||
1464 | There are a lot of optimizations we could do that we don't. | |
1465 | In particular, we do not, in general, reorder instructions. | |
1466 | If you use gcc with optimization, it will reorder | |
1467 | instructions and generally do much more optimization then we | |
1468 | do here; repeating all that work in the assembler would only | |
1469 | benefit hand written assembly code, and does not seem worth | |
1470 | it. */ | |
1471 | ||
1472 | /* This is how a NOP is emitted. */ | |
1473 | #define emit_nop() \ | |
1474 | (mips_opts.mips16 \ | |
1475 | ? md_number_to_chars (frag_more (2), 0x6500, 2) \ | |
1476 | : md_number_to_chars (frag_more (4), 0, 4)) | |
1477 | ||
1478 | /* The previous insn might require a delay slot, depending upon | |
1479 | the contents of the current insn. */ | |
1480 | if (! mips_opts.mips16 | |
9ce8a5dd | 1481 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
1482 | && (((prev_pinfo & INSN_LOAD_COPROC_DELAY) |
1483 | && ! cop_interlocks) | |
1484 | || (! gpr_interlocks | |
1485 | && (prev_pinfo & INSN_LOAD_MEMORY_DELAY)))) | |
1486 | { | |
1487 | /* A load from a coprocessor or from memory. All load | |
1488 | delays delay the use of general register rt for one | |
1489 | instruction on the r3000. The r6000 and r4000 use | |
1490 | interlocks. */ | |
beae10d5 | 1491 | /* Itbl support may require additional care here. */ |
252b5132 RH |
1492 | know (prev_pinfo & INSN_WRITE_GPR_T); |
1493 | if (mips_optimize == 0 | |
1494 | || insn_uses_reg (ip, | |
1495 | ((prev_insn.insn_opcode >> OP_SH_RT) | |
1496 | & OP_MASK_RT), | |
1497 | MIPS_GR_REG)) | |
1498 | ++nops; | |
1499 | } | |
1500 | else if (! mips_opts.mips16 | |
9ce8a5dd | 1501 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 | 1502 | && (((prev_pinfo & INSN_COPROC_MOVE_DELAY) |
beae10d5 | 1503 | && ! cop_interlocks) |
e7af610e | 1504 | || (mips_opts.isa == ISA_MIPS1 |
252b5132 RH |
1505 | && (prev_pinfo & INSN_COPROC_MEMORY_DELAY)))) |
1506 | { | |
1507 | /* A generic coprocessor delay. The previous instruction | |
1508 | modified a coprocessor general or control register. If | |
1509 | it modified a control register, we need to avoid any | |
1510 | coprocessor instruction (this is probably not always | |
1511 | required, but it sometimes is). If it modified a general | |
1512 | register, we avoid using that register. | |
1513 | ||
1514 | On the r6000 and r4000 loading a coprocessor register | |
1515 | from memory is interlocked, and does not require a delay. | |
1516 | ||
1517 | This case is not handled very well. There is no special | |
1518 | knowledge of CP0 handling, and the coprocessors other | |
1519 | than the floating point unit are not distinguished at | |
1520 | all. */ | |
1521 | /* Itbl support may require additional care here. FIXME! | |
bdaaa2e1 | 1522 | Need to modify this to include knowledge about |
252b5132 RH |
1523 | user specified delays! */ |
1524 | if (prev_pinfo & INSN_WRITE_FPR_T) | |
1525 | { | |
1526 | if (mips_optimize == 0 | |
1527 | || insn_uses_reg (ip, | |
1528 | ((prev_insn.insn_opcode >> OP_SH_FT) | |
1529 | & OP_MASK_FT), | |
1530 | MIPS_FP_REG)) | |
1531 | ++nops; | |
1532 | } | |
1533 | else if (prev_pinfo & INSN_WRITE_FPR_S) | |
1534 | { | |
1535 | if (mips_optimize == 0 | |
1536 | || insn_uses_reg (ip, | |
1537 | ((prev_insn.insn_opcode >> OP_SH_FS) | |
1538 | & OP_MASK_FS), | |
1539 | MIPS_FP_REG)) | |
1540 | ++nops; | |
1541 | } | |
1542 | else | |
1543 | { | |
1544 | /* We don't know exactly what the previous instruction | |
1545 | does. If the current instruction uses a coprocessor | |
1546 | register, we must insert a NOP. If previous | |
1547 | instruction may set the condition codes, and the | |
1548 | current instruction uses them, we must insert two | |
1549 | NOPS. */ | |
bdaaa2e1 | 1550 | /* Itbl support may require additional care here. */ |
252b5132 RH |
1551 | if (mips_optimize == 0 |
1552 | || ((prev_pinfo & INSN_WRITE_COND_CODE) | |
1553 | && (pinfo & INSN_READ_COND_CODE))) | |
1554 | nops += 2; | |
1555 | else if (pinfo & INSN_COP) | |
1556 | ++nops; | |
1557 | } | |
1558 | } | |
1559 | else if (! mips_opts.mips16 | |
9ce8a5dd | 1560 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
1561 | && (prev_pinfo & INSN_WRITE_COND_CODE) |
1562 | && ! cop_interlocks) | |
1563 | { | |
1564 | /* The previous instruction sets the coprocessor condition | |
1565 | codes, but does not require a general coprocessor delay | |
1566 | (this means it is a floating point comparison | |
1567 | instruction). If this instruction uses the condition | |
1568 | codes, we need to insert a single NOP. */ | |
beae10d5 | 1569 | /* Itbl support may require additional care here. */ |
252b5132 RH |
1570 | if (mips_optimize == 0 |
1571 | || (pinfo & INSN_READ_COND_CODE)) | |
1572 | ++nops; | |
1573 | } | |
6b76fefe CM |
1574 | |
1575 | /* If we're fixing up mfhi/mflo for the r7000 and the | |
1576 | previous insn was an mfhi/mflo and the current insn | |
1577 | reads the register that the mfhi/mflo wrote to, then | |
1578 | insert two nops. */ | |
1579 | ||
1580 | else if (mips_7000_hilo_fix | |
1581 | && MF_HILO_INSN (prev_pinfo) | |
1582 | && insn_uses_reg (ip, ((prev_insn.insn_opcode >> OP_SH_RD) | |
beae10d5 KH |
1583 | & OP_MASK_RD), |
1584 | MIPS_GR_REG)) | |
6b76fefe CM |
1585 | { |
1586 | nops += 2; | |
1587 | } | |
1588 | ||
1589 | /* If we're fixing up mfhi/mflo for the r7000 and the | |
1590 | 2nd previous insn was an mfhi/mflo and the current insn | |
1591 | reads the register that the mfhi/mflo wrote to, then | |
1592 | insert one nop. */ | |
1593 | ||
1594 | else if (mips_7000_hilo_fix | |
1595 | && MF_HILO_INSN (prev_prev_insn.insn_opcode) | |
1596 | && insn_uses_reg (ip, ((prev_prev_insn.insn_opcode >> OP_SH_RD) | |
1597 | & OP_MASK_RD), | |
1598 | MIPS_GR_REG)) | |
bdaaa2e1 | 1599 | |
6b76fefe | 1600 | { |
f9419b05 | 1601 | ++nops; |
6b76fefe | 1602 | } |
bdaaa2e1 | 1603 | |
252b5132 RH |
1604 | else if (prev_pinfo & INSN_READ_LO) |
1605 | { | |
1606 | /* The previous instruction reads the LO register; if the | |
1607 | current instruction writes to the LO register, we must | |
bdaaa2e1 KH |
1608 | insert two NOPS. Some newer processors have interlocks. |
1609 | Also the tx39's multiply instructions can be exectuted | |
252b5132 | 1610 | immediatly after a read from HI/LO (without the delay), |
bdaaa2e1 KH |
1611 | though the tx39's divide insns still do require the |
1612 | delay. */ | |
252b5132 | 1613 | if (! (hilo_interlocks |
ec68c924 | 1614 | || (mips_tune == CPU_R3900 && (pinfo & INSN_MULT))) |
252b5132 RH |
1615 | && (mips_optimize == 0 |
1616 | || (pinfo & INSN_WRITE_LO))) | |
1617 | nops += 2; | |
1618 | /* Most mips16 branch insns don't have a delay slot. | |
1619 | If a read from LO is immediately followed by a branch | |
1620 | to a write to LO we have a read followed by a write | |
1621 | less than 2 insns away. We assume the target of | |
1622 | a branch might be a write to LO, and insert a nop | |
bdaaa2e1 | 1623 | between a read and an immediately following branch. */ |
252b5132 RH |
1624 | else if (mips_opts.mips16 |
1625 | && (mips_optimize == 0 | |
1626 | || (pinfo & MIPS16_INSN_BRANCH))) | |
f9419b05 | 1627 | ++nops; |
252b5132 RH |
1628 | } |
1629 | else if (prev_insn.insn_mo->pinfo & INSN_READ_HI) | |
1630 | { | |
1631 | /* The previous instruction reads the HI register; if the | |
1632 | current instruction writes to the HI register, we must | |
1633 | insert a NOP. Some newer processors have interlocks. | |
bdaaa2e1 | 1634 | Also the note tx39's multiply above. */ |
252b5132 | 1635 | if (! (hilo_interlocks |
ec68c924 | 1636 | || (mips_tune == CPU_R3900 && (pinfo & INSN_MULT))) |
252b5132 RH |
1637 | && (mips_optimize == 0 |
1638 | || (pinfo & INSN_WRITE_HI))) | |
1639 | nops += 2; | |
1640 | /* Most mips16 branch insns don't have a delay slot. | |
1641 | If a read from HI is immediately followed by a branch | |
1642 | to a write to HI we have a read followed by a write | |
1643 | less than 2 insns away. We assume the target of | |
1644 | a branch might be a write to HI, and insert a nop | |
bdaaa2e1 | 1645 | between a read and an immediately following branch. */ |
252b5132 RH |
1646 | else if (mips_opts.mips16 |
1647 | && (mips_optimize == 0 | |
1648 | || (pinfo & MIPS16_INSN_BRANCH))) | |
f9419b05 | 1649 | ++nops; |
252b5132 RH |
1650 | } |
1651 | ||
1652 | /* If the previous instruction was in a noreorder section, then | |
1653 | we don't want to insert the nop after all. */ | |
bdaaa2e1 | 1654 | /* Itbl support may require additional care here. */ |
252b5132 RH |
1655 | if (prev_insn_unreordered) |
1656 | nops = 0; | |
1657 | ||
1658 | /* There are two cases which require two intervening | |
1659 | instructions: 1) setting the condition codes using a move to | |
1660 | coprocessor instruction which requires a general coprocessor | |
1661 | delay and then reading the condition codes 2) reading the HI | |
1662 | or LO register and then writing to it (except on processors | |
1663 | which have interlocks). If we are not already emitting a NOP | |
1664 | instruction, we must check for these cases compared to the | |
1665 | instruction previous to the previous instruction. */ | |
1666 | if ((! mips_opts.mips16 | |
9ce8a5dd | 1667 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
1668 | && (prev_prev_insn.insn_mo->pinfo & INSN_COPROC_MOVE_DELAY) |
1669 | && (prev_prev_insn.insn_mo->pinfo & INSN_WRITE_COND_CODE) | |
1670 | && (pinfo & INSN_READ_COND_CODE) | |
1671 | && ! cop_interlocks) | |
1672 | || ((prev_prev_insn.insn_mo->pinfo & INSN_READ_LO) | |
1673 | && (pinfo & INSN_WRITE_LO) | |
1674 | && ! (hilo_interlocks | |
ec68c924 | 1675 | || (mips_tune == CPU_R3900 && (pinfo & INSN_MULT)))) |
252b5132 RH |
1676 | || ((prev_prev_insn.insn_mo->pinfo & INSN_READ_HI) |
1677 | && (pinfo & INSN_WRITE_HI) | |
1678 | && ! (hilo_interlocks | |
ec68c924 | 1679 | || (mips_tune == CPU_R3900 && (pinfo & INSN_MULT))))) |
252b5132 RH |
1680 | prev_prev_nop = 1; |
1681 | else | |
1682 | prev_prev_nop = 0; | |
1683 | ||
1684 | if (prev_prev_insn_unreordered) | |
1685 | prev_prev_nop = 0; | |
1686 | ||
1687 | if (prev_prev_nop && nops == 0) | |
1688 | ++nops; | |
1689 | ||
1690 | /* If we are being given a nop instruction, don't bother with | |
1691 | one of the nops we would otherwise output. This will only | |
1692 | happen when a nop instruction is used with mips_optimize set | |
1693 | to 0. */ | |
1694 | if (nops > 0 | |
1695 | && ! mips_opts.noreorder | |
156c2f8b | 1696 | && ip->insn_opcode == (unsigned) (mips_opts.mips16 ? 0x6500 : 0)) |
252b5132 RH |
1697 | --nops; |
1698 | ||
1699 | /* Now emit the right number of NOP instructions. */ | |
1700 | if (nops > 0 && ! mips_opts.noreorder) | |
1701 | { | |
1702 | fragS *old_frag; | |
1703 | unsigned long old_frag_offset; | |
1704 | int i; | |
1705 | struct insn_label_list *l; | |
1706 | ||
1707 | old_frag = frag_now; | |
1708 | old_frag_offset = frag_now_fix (); | |
1709 | ||
1710 | for (i = 0; i < nops; i++) | |
1711 | emit_nop (); | |
1712 | ||
1713 | if (listing) | |
1714 | { | |
1715 | listing_prev_line (); | |
1716 | /* We may be at the start of a variant frag. In case we | |
1717 | are, make sure there is enough space for the frag | |
1718 | after the frags created by listing_prev_line. The | |
1719 | argument to frag_grow here must be at least as large | |
1720 | as the argument to all other calls to frag_grow in | |
1721 | this file. We don't have to worry about being in the | |
1722 | middle of a variant frag, because the variants insert | |
1723 | all needed nop instructions themselves. */ | |
1724 | frag_grow (40); | |
1725 | } | |
1726 | ||
1727 | for (l = insn_labels; l != NULL; l = l->next) | |
1728 | { | |
98aa84af AM |
1729 | valueT val; |
1730 | ||
252b5132 | 1731 | assert (S_GET_SEGMENT (l->label) == now_seg); |
49309057 | 1732 | symbol_set_frag (l->label, frag_now); |
98aa84af | 1733 | val = (valueT) frag_now_fix (); |
252b5132 RH |
1734 | /* mips16 text labels are stored as odd. */ |
1735 | if (mips_opts.mips16) | |
f9419b05 | 1736 | ++val; |
98aa84af | 1737 | S_SET_VALUE (l->label, val); |
252b5132 RH |
1738 | } |
1739 | ||
1740 | #ifndef NO_ECOFF_DEBUGGING | |
1741 | if (ECOFF_DEBUGGING) | |
1742 | ecoff_fix_loc (old_frag, old_frag_offset); | |
1743 | #endif | |
1744 | } | |
1745 | else if (prev_nop_frag != NULL) | |
1746 | { | |
1747 | /* We have a frag holding nops we may be able to remove. If | |
1748 | we don't need any nops, we can decrease the size of | |
1749 | prev_nop_frag by the size of one instruction. If we do | |
bdaaa2e1 | 1750 | need some nops, we count them in prev_nops_required. */ |
252b5132 RH |
1751 | if (prev_nop_frag_since == 0) |
1752 | { | |
1753 | if (nops == 0) | |
1754 | { | |
1755 | prev_nop_frag->fr_fix -= mips_opts.mips16 ? 2 : 4; | |
1756 | --prev_nop_frag_holds; | |
1757 | } | |
1758 | else | |
1759 | prev_nop_frag_required += nops; | |
1760 | } | |
1761 | else | |
1762 | { | |
1763 | if (prev_prev_nop == 0) | |
1764 | { | |
1765 | prev_nop_frag->fr_fix -= mips_opts.mips16 ? 2 : 4; | |
1766 | --prev_nop_frag_holds; | |
1767 | } | |
1768 | else | |
1769 | ++prev_nop_frag_required; | |
1770 | } | |
1771 | ||
1772 | if (prev_nop_frag_holds <= prev_nop_frag_required) | |
1773 | prev_nop_frag = NULL; | |
1774 | ||
1775 | ++prev_nop_frag_since; | |
1776 | ||
1777 | /* Sanity check: by the time we reach the second instruction | |
1778 | after prev_nop_frag, we should have used up all the nops | |
1779 | one way or another. */ | |
1780 | assert (prev_nop_frag_since <= 1 || prev_nop_frag == NULL); | |
1781 | } | |
1782 | } | |
1783 | ||
f6688943 | 1784 | if (*reloc_type > BFD_RELOC_UNUSED) |
252b5132 RH |
1785 | { |
1786 | /* We need to set up a variant frag. */ | |
1787 | assert (mips_opts.mips16 && address_expr != NULL); | |
1788 | f = frag_var (rs_machine_dependent, 4, 0, | |
f6688943 | 1789 | RELAX_MIPS16_ENCODE (*reloc_type - BFD_RELOC_UNUSED, |
252b5132 RH |
1790 | mips16_small, mips16_ext, |
1791 | (prev_pinfo | |
1792 | & INSN_UNCOND_BRANCH_DELAY), | |
f6688943 | 1793 | (*prev_insn_reloc_type |
252b5132 | 1794 | == BFD_RELOC_MIPS16_JMP)), |
c4e7957c | 1795 | make_expr_symbol (address_expr), 0, NULL); |
252b5132 RH |
1796 | } |
1797 | else if (place != NULL) | |
1798 | f = place; | |
1799 | else if (mips_opts.mips16 | |
1800 | && ! ip->use_extend | |
f6688943 | 1801 | && *reloc_type != BFD_RELOC_MIPS16_JMP) |
252b5132 RH |
1802 | { |
1803 | /* Make sure there is enough room to swap this instruction with | |
1804 | a following jump instruction. */ | |
1805 | frag_grow (6); | |
1806 | f = frag_more (2); | |
1807 | } | |
1808 | else | |
1809 | { | |
1810 | if (mips_opts.mips16 | |
1811 | && mips_opts.noreorder | |
1812 | && (prev_pinfo & INSN_UNCOND_BRANCH_DELAY) != 0) | |
1813 | as_warn (_("extended instruction in delay slot")); | |
1814 | ||
1815 | f = frag_more (4); | |
1816 | } | |
1817 | ||
f6688943 TS |
1818 | fixp[0] = fixp[1] = fixp[2] = NULL; |
1819 | if (address_expr != NULL && *reloc_type < BFD_RELOC_UNUSED) | |
252b5132 RH |
1820 | { |
1821 | if (address_expr->X_op == O_constant) | |
1822 | { | |
4db1a35d | 1823 | valueT tmp; |
f6688943 TS |
1824 | |
1825 | switch (*reloc_type) | |
252b5132 RH |
1826 | { |
1827 | case BFD_RELOC_32: | |
1828 | ip->insn_opcode |= address_expr->X_add_number; | |
1829 | break; | |
1830 | ||
f6688943 TS |
1831 | case BFD_RELOC_MIPS_HIGHEST: |
1832 | tmp = (address_expr->X_add_number + 0x800080008000) >> 16; | |
1833 | tmp >>= 16; | |
1834 | ip->insn_opcode |= (tmp >> 16) & 0xffff; | |
1835 | break; | |
1836 | ||
1837 | case BFD_RELOC_MIPS_HIGHER: | |
1838 | tmp = (address_expr->X_add_number + 0x80008000) >> 16; | |
1839 | ip->insn_opcode |= (tmp >> 16) & 0xffff; | |
1840 | break; | |
1841 | ||
1842 | case BFD_RELOC_HI16_S: | |
1843 | ip->insn_opcode |= ((address_expr->X_add_number + 0x8000) | |
1844 | >> 16) & 0xffff; | |
1845 | break; | |
1846 | ||
1847 | case BFD_RELOC_HI16: | |
1848 | ip->insn_opcode |= (address_expr->X_add_number >> 16) & 0xffff; | |
1849 | break; | |
1850 | ||
252b5132 RH |
1851 | case BFD_RELOC_LO16: |
1852 | ip->insn_opcode |= address_expr->X_add_number & 0xffff; | |
1853 | break; | |
1854 | ||
1855 | case BFD_RELOC_MIPS_JMP: | |
1856 | if ((address_expr->X_add_number & 3) != 0) | |
1857 | as_bad (_("jump to misaligned address (0x%lx)"), | |
1858 | (unsigned long) address_expr->X_add_number); | |
7496292d TS |
1859 | if (address_expr->X_add_number & ~0xfffffff |
1860 | || address_expr->X_add_number > 0x7fffffc) | |
1861 | as_bad (_("jump address range overflow (0x%lx)"), | |
1862 | (unsigned long) address_expr->X_add_number); | |
252b5132 RH |
1863 | ip->insn_opcode |= (address_expr->X_add_number >> 2) & 0x3ffffff; |
1864 | break; | |
1865 | ||
1866 | case BFD_RELOC_MIPS16_JMP: | |
1867 | if ((address_expr->X_add_number & 3) != 0) | |
1868 | as_bad (_("jump to misaligned address (0x%lx)"), | |
1869 | (unsigned long) address_expr->X_add_number); | |
7496292d TS |
1870 | if (address_expr->X_add_number & ~0xfffffff |
1871 | || address_expr->X_add_number > 0x7fffffc) | |
1872 | as_bad (_("jump address range overflow (0x%lx)"), | |
1873 | (unsigned long) address_expr->X_add_number); | |
252b5132 RH |
1874 | ip->insn_opcode |= |
1875 | (((address_expr->X_add_number & 0x7c0000) << 3) | |
1876 | | ((address_expr->X_add_number & 0xf800000) >> 7) | |
1877 | | ((address_expr->X_add_number & 0x3fffc) >> 2)); | |
1878 | break; | |
1879 | ||
cb56d3d3 | 1880 | case BFD_RELOC_16_PCREL: |
233b8738 | 1881 | ip->insn_opcode |= address_expr->X_add_number & 0xffff; |
cb56d3d3 TS |
1882 | break; |
1883 | ||
252b5132 RH |
1884 | case BFD_RELOC_16_PCREL_S2: |
1885 | goto need_reloc; | |
1886 | ||
1887 | default: | |
1888 | internalError (); | |
1889 | } | |
1890 | } | |
1891 | else | |
1892 | { | |
1893 | need_reloc: | |
f6688943 | 1894 | /* Don't generate a reloc if we are writing into a variant frag. */ |
252b5132 RH |
1895 | if (place == NULL) |
1896 | { | |
f6688943 TS |
1897 | fixp[0] = fix_new_exp (frag_now, f - frag_now->fr_literal, 4, |
1898 | address_expr, | |
1899 | (*reloc_type == BFD_RELOC_16_PCREL | |
1900 | || *reloc_type == BFD_RELOC_16_PCREL_S2), | |
1901 | reloc_type[0]); | |
1902 | ||
b6ff326e | 1903 | /* These relocations can have an addend that won't fit in |
f6688943 TS |
1904 | 4 octets for 64bit assembly. */ |
1905 | if (HAVE_64BIT_GPRS && | |
1906 | (*reloc_type == BFD_RELOC_16 | |
98d3f06f KH |
1907 | || *reloc_type == BFD_RELOC_32 |
1908 | || *reloc_type == BFD_RELOC_MIPS_JMP | |
1909 | || *reloc_type == BFD_RELOC_HI16_S | |
1910 | || *reloc_type == BFD_RELOC_LO16 | |
1911 | || *reloc_type == BFD_RELOC_GPREL16 | |
1912 | || *reloc_type == BFD_RELOC_MIPS_LITERAL | |
1913 | || *reloc_type == BFD_RELOC_GPREL32 | |
1914 | || *reloc_type == BFD_RELOC_64 | |
1915 | || *reloc_type == BFD_RELOC_CTOR | |
1916 | || *reloc_type == BFD_RELOC_MIPS_SUB | |
1917 | || *reloc_type == BFD_RELOC_MIPS_HIGHEST | |
1918 | || *reloc_type == BFD_RELOC_MIPS_HIGHER | |
1919 | || *reloc_type == BFD_RELOC_MIPS_SCN_DISP | |
1920 | || *reloc_type == BFD_RELOC_MIPS_REL16 | |
1921 | || *reloc_type == BFD_RELOC_MIPS_RELGOT)) | |
f6688943 TS |
1922 | fixp[0]->fx_no_overflow = 1; |
1923 | ||
252b5132 RH |
1924 | if (unmatched_hi) |
1925 | { | |
1926 | struct mips_hi_fixup *hi_fixup; | |
1927 | ||
f6688943 | 1928 | assert (*reloc_type == BFD_RELOC_HI16_S); |
252b5132 RH |
1929 | hi_fixup = ((struct mips_hi_fixup *) |
1930 | xmalloc (sizeof (struct mips_hi_fixup))); | |
f6688943 | 1931 | hi_fixup->fixp = fixp[0]; |
252b5132 RH |
1932 | hi_fixup->seg = now_seg; |
1933 | hi_fixup->next = mips_hi_fixup_list; | |
1934 | mips_hi_fixup_list = hi_fixup; | |
1935 | } | |
f6688943 TS |
1936 | |
1937 | if (reloc_type[1] != BFD_RELOC_UNUSED) | |
1938 | { | |
1939 | /* FIXME: This symbol can be one of | |
1940 | RSS_UNDEF, RSS_GP, RSS_GP0, RSS_LOC. */ | |
1941 | address_expr->X_op = O_absent; | |
1942 | address_expr->X_add_symbol = 0; | |
1943 | address_expr->X_add_number = 0; | |
1944 | ||
1945 | fixp[1] = fix_new_exp (frag_now, f - frag_now->fr_literal, | |
1946 | 4, address_expr, false, | |
1947 | reloc_type[1]); | |
1948 | ||
b6ff326e | 1949 | /* These relocations can have an addend that won't fit in |
f6688943 TS |
1950 | 4 octets for 64bit assembly. */ |
1951 | if (HAVE_64BIT_GPRS && | |
1952 | (*reloc_type == BFD_RELOC_16 | |
1953 | || *reloc_type == BFD_RELOC_32 | |
1954 | || *reloc_type == BFD_RELOC_MIPS_JMP | |
1955 | || *reloc_type == BFD_RELOC_HI16_S | |
1956 | || *reloc_type == BFD_RELOC_LO16 | |
1957 | || *reloc_type == BFD_RELOC_GPREL16 | |
1958 | || *reloc_type == BFD_RELOC_MIPS_LITERAL | |
1959 | || *reloc_type == BFD_RELOC_GPREL32 | |
1960 | || *reloc_type == BFD_RELOC_64 | |
1961 | || *reloc_type == BFD_RELOC_CTOR | |
1962 | || *reloc_type == BFD_RELOC_MIPS_SUB | |
1963 | || *reloc_type == BFD_RELOC_MIPS_HIGHEST | |
1964 | || *reloc_type == BFD_RELOC_MIPS_HIGHER | |
1965 | || *reloc_type == BFD_RELOC_MIPS_SCN_DISP | |
1966 | || *reloc_type == BFD_RELOC_MIPS_REL16 | |
1967 | || *reloc_type == BFD_RELOC_MIPS_RELGOT)) | |
98d3f06f | 1968 | fixp[1]->fx_no_overflow = 1; |
f6688943 TS |
1969 | |
1970 | if (reloc_type[2] != BFD_RELOC_UNUSED) | |
1971 | { | |
1972 | address_expr->X_op = O_absent; | |
1973 | address_expr->X_add_symbol = 0; | |
1974 | address_expr->X_add_number = 0; | |
1975 | ||
1976 | fixp[2] = fix_new_exp (frag_now, | |
1977 | f - frag_now->fr_literal, 4, | |
1978 | address_expr, false, | |
1979 | reloc_type[2]); | |
1980 | ||
b6ff326e | 1981 | /* These relocations can have an addend that won't fit in |
f6688943 TS |
1982 | 4 octets for 64bit assembly. */ |
1983 | if (HAVE_64BIT_GPRS && | |
1984 | (*reloc_type == BFD_RELOC_16 | |
1985 | || *reloc_type == BFD_RELOC_32 | |
1986 | || *reloc_type == BFD_RELOC_MIPS_JMP | |
1987 | || *reloc_type == BFD_RELOC_HI16_S | |
1988 | || *reloc_type == BFD_RELOC_LO16 | |
1989 | || *reloc_type == BFD_RELOC_GPREL16 | |
1990 | || *reloc_type == BFD_RELOC_MIPS_LITERAL | |
1991 | || *reloc_type == BFD_RELOC_GPREL32 | |
1992 | || *reloc_type == BFD_RELOC_64 | |
1993 | || *reloc_type == BFD_RELOC_CTOR | |
1994 | || *reloc_type == BFD_RELOC_MIPS_SUB | |
1995 | || *reloc_type == BFD_RELOC_MIPS_HIGHEST | |
1996 | || *reloc_type == BFD_RELOC_MIPS_HIGHER | |
1997 | || *reloc_type == BFD_RELOC_MIPS_SCN_DISP | |
1998 | || *reloc_type == BFD_RELOC_MIPS_REL16 | |
1999 | || *reloc_type == BFD_RELOC_MIPS_RELGOT)) | |
98d3f06f | 2000 | fixp[2]->fx_no_overflow = 1; |
f6688943 TS |
2001 | } |
2002 | } | |
252b5132 RH |
2003 | } |
2004 | } | |
2005 | } | |
2006 | ||
2007 | if (! mips_opts.mips16) | |
c5dd6aab DJ |
2008 | { |
2009 | md_number_to_chars (f, ip->insn_opcode, 4); | |
2010 | #ifdef OBJ_ELF | |
2011 | dwarf2_emit_insn (4); | |
2012 | #endif | |
2013 | } | |
f6688943 | 2014 | else if (*reloc_type == BFD_RELOC_MIPS16_JMP) |
252b5132 RH |
2015 | { |
2016 | md_number_to_chars (f, ip->insn_opcode >> 16, 2); | |
2017 | md_number_to_chars (f + 2, ip->insn_opcode & 0xffff, 2); | |
c5dd6aab DJ |
2018 | #ifdef OBJ_ELF |
2019 | dwarf2_emit_insn (4); | |
2020 | #endif | |
252b5132 RH |
2021 | } |
2022 | else | |
2023 | { | |
2024 | if (ip->use_extend) | |
2025 | { | |
2026 | md_number_to_chars (f, 0xf000 | ip->extend, 2); | |
2027 | f += 2; | |
2028 | } | |
2029 | md_number_to_chars (f, ip->insn_opcode, 2); | |
c5dd6aab DJ |
2030 | #ifdef OBJ_ELF |
2031 | dwarf2_emit_insn (ip->use_extend ? 4 : 2); | |
2032 | #endif | |
252b5132 RH |
2033 | } |
2034 | ||
2035 | /* Update the register mask information. */ | |
2036 | if (! mips_opts.mips16) | |
2037 | { | |
2038 | if (pinfo & INSN_WRITE_GPR_D) | |
2039 | mips_gprmask |= 1 << ((ip->insn_opcode >> OP_SH_RD) & OP_MASK_RD); | |
2040 | if ((pinfo & (INSN_WRITE_GPR_T | INSN_READ_GPR_T)) != 0) | |
2041 | mips_gprmask |= 1 << ((ip->insn_opcode >> OP_SH_RT) & OP_MASK_RT); | |
2042 | if (pinfo & INSN_READ_GPR_S) | |
2043 | mips_gprmask |= 1 << ((ip->insn_opcode >> OP_SH_RS) & OP_MASK_RS); | |
2044 | if (pinfo & INSN_WRITE_GPR_31) | |
f9419b05 | 2045 | mips_gprmask |= 1 << RA; |
252b5132 RH |
2046 | if (pinfo & INSN_WRITE_FPR_D) |
2047 | mips_cprmask[1] |= 1 << ((ip->insn_opcode >> OP_SH_FD) & OP_MASK_FD); | |
2048 | if ((pinfo & (INSN_WRITE_FPR_S | INSN_READ_FPR_S)) != 0) | |
2049 | mips_cprmask[1] |= 1 << ((ip->insn_opcode >> OP_SH_FS) & OP_MASK_FS); | |
2050 | if ((pinfo & (INSN_WRITE_FPR_T | INSN_READ_FPR_T)) != 0) | |
2051 | mips_cprmask[1] |= 1 << ((ip->insn_opcode >> OP_SH_FT) & OP_MASK_FT); | |
2052 | if ((pinfo & INSN_READ_FPR_R) != 0) | |
2053 | mips_cprmask[1] |= 1 << ((ip->insn_opcode >> OP_SH_FR) & OP_MASK_FR); | |
2054 | if (pinfo & INSN_COP) | |
2055 | { | |
bdaaa2e1 KH |
2056 | /* We don't keep enough information to sort these cases out. |
2057 | The itbl support does keep this information however, although | |
2058 | we currently don't support itbl fprmats as part of the cop | |
2059 | instruction. May want to add this support in the future. */ | |
252b5132 RH |
2060 | } |
2061 | /* Never set the bit for $0, which is always zero. */ | |
beae10d5 | 2062 | mips_gprmask &= ~1 << 0; |
252b5132 RH |
2063 | } |
2064 | else | |
2065 | { | |
2066 | if (pinfo & (MIPS16_INSN_WRITE_X | MIPS16_INSN_READ_X)) | |
2067 | mips_gprmask |= 1 << ((ip->insn_opcode >> MIPS16OP_SH_RX) | |
2068 | & MIPS16OP_MASK_RX); | |
2069 | if (pinfo & (MIPS16_INSN_WRITE_Y | MIPS16_INSN_READ_Y)) | |
2070 | mips_gprmask |= 1 << ((ip->insn_opcode >> MIPS16OP_SH_RY) | |
2071 | & MIPS16OP_MASK_RY); | |
2072 | if (pinfo & MIPS16_INSN_WRITE_Z) | |
2073 | mips_gprmask |= 1 << ((ip->insn_opcode >> MIPS16OP_SH_RZ) | |
2074 | & MIPS16OP_MASK_RZ); | |
2075 | if (pinfo & (MIPS16_INSN_WRITE_T | MIPS16_INSN_READ_T)) | |
2076 | mips_gprmask |= 1 << TREG; | |
2077 | if (pinfo & (MIPS16_INSN_WRITE_SP | MIPS16_INSN_READ_SP)) | |
2078 | mips_gprmask |= 1 << SP; | |
2079 | if (pinfo & (MIPS16_INSN_WRITE_31 | MIPS16_INSN_READ_31)) | |
2080 | mips_gprmask |= 1 << RA; | |
2081 | if (pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
2082 | mips_gprmask |= 1 << MIPS16OP_EXTRACT_REG32R (ip->insn_opcode); | |
2083 | if (pinfo & MIPS16_INSN_READ_Z) | |
2084 | mips_gprmask |= 1 << ((ip->insn_opcode >> MIPS16OP_SH_MOVE32Z) | |
2085 | & MIPS16OP_MASK_MOVE32Z); | |
2086 | if (pinfo & MIPS16_INSN_READ_GPR_X) | |
2087 | mips_gprmask |= 1 << ((ip->insn_opcode >> MIPS16OP_SH_REGR32) | |
2088 | & MIPS16OP_MASK_REGR32); | |
2089 | } | |
2090 | ||
2091 | if (place == NULL && ! mips_opts.noreorder) | |
2092 | { | |
2093 | /* Filling the branch delay slot is more complex. We try to | |
2094 | switch the branch with the previous instruction, which we can | |
2095 | do if the previous instruction does not set up a condition | |
2096 | that the branch tests and if the branch is not itself the | |
2097 | target of any branch. */ | |
2098 | if ((pinfo & INSN_UNCOND_BRANCH_DELAY) | |
2099 | || (pinfo & INSN_COND_BRANCH_DELAY)) | |
2100 | { | |
2101 | if (mips_optimize < 2 | |
2102 | /* If we have seen .set volatile or .set nomove, don't | |
2103 | optimize. */ | |
2104 | || mips_opts.nomove != 0 | |
2105 | /* If we had to emit any NOP instructions, then we | |
2106 | already know we can not swap. */ | |
2107 | || nops != 0 | |
2108 | /* If we don't even know the previous insn, we can not | |
bdaaa2e1 | 2109 | swap. */ |
252b5132 RH |
2110 | || ! prev_insn_valid |
2111 | /* If the previous insn is already in a branch delay | |
2112 | slot, then we can not swap. */ | |
2113 | || prev_insn_is_delay_slot | |
2114 | /* If the previous previous insn was in a .set | |
2115 | noreorder, we can't swap. Actually, the MIPS | |
2116 | assembler will swap in this situation. However, gcc | |
2117 | configured -with-gnu-as will generate code like | |
2118 | .set noreorder | |
2119 | lw $4,XXX | |
2120 | .set reorder | |
2121 | INSN | |
2122 | bne $4,$0,foo | |
2123 | in which we can not swap the bne and INSN. If gcc is | |
2124 | not configured -with-gnu-as, it does not output the | |
2125 | .set pseudo-ops. We don't have to check | |
2126 | prev_insn_unreordered, because prev_insn_valid will | |
2127 | be 0 in that case. We don't want to use | |
2128 | prev_prev_insn_valid, because we do want to be able | |
2129 | to swap at the start of a function. */ | |
2130 | || prev_prev_insn_unreordered | |
2131 | /* If the branch is itself the target of a branch, we | |
2132 | can not swap. We cheat on this; all we check for is | |
2133 | whether there is a label on this instruction. If | |
2134 | there are any branches to anything other than a | |
2135 | label, users must use .set noreorder. */ | |
2136 | || insn_labels != NULL | |
2137 | /* If the previous instruction is in a variant frag, we | |
2138 | can not do the swap. This does not apply to the | |
2139 | mips16, which uses variant frags for different | |
2140 | purposes. */ | |
2141 | || (! mips_opts.mips16 | |
2142 | && prev_insn_frag->fr_type == rs_machine_dependent) | |
2143 | /* If the branch reads the condition codes, we don't | |
2144 | even try to swap, because in the sequence | |
2145 | ctc1 $X,$31 | |
2146 | INSN | |
2147 | INSN | |
2148 | bc1t LABEL | |
2149 | we can not swap, and I don't feel like handling that | |
2150 | case. */ | |
2151 | || (! mips_opts.mips16 | |
9ce8a5dd | 2152 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
2153 | && (pinfo & INSN_READ_COND_CODE)) |
2154 | /* We can not swap with an instruction that requires a | |
2155 | delay slot, becase the target of the branch might | |
2156 | interfere with that instruction. */ | |
2157 | || (! mips_opts.mips16 | |
9ce8a5dd | 2158 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 | 2159 | && (prev_pinfo |
bdaaa2e1 | 2160 | /* Itbl support may require additional care here. */ |
252b5132 RH |
2161 | & (INSN_LOAD_COPROC_DELAY |
2162 | | INSN_COPROC_MOVE_DELAY | |
2163 | | INSN_WRITE_COND_CODE))) | |
2164 | || (! (hilo_interlocks | |
ec68c924 | 2165 | || (mips_tune == CPU_R3900 && (pinfo & INSN_MULT))) |
252b5132 RH |
2166 | && (prev_pinfo |
2167 | & (INSN_READ_LO | |
2168 | | INSN_READ_HI))) | |
2169 | || (! mips_opts.mips16 | |
2170 | && ! gpr_interlocks | |
2171 | && (prev_pinfo & INSN_LOAD_MEMORY_DELAY)) | |
2172 | || (! mips_opts.mips16 | |
e7af610e | 2173 | && mips_opts.isa == ISA_MIPS1 |
bdaaa2e1 | 2174 | /* Itbl support may require additional care here. */ |
252b5132 RH |
2175 | && (prev_pinfo & INSN_COPROC_MEMORY_DELAY)) |
2176 | /* We can not swap with a branch instruction. */ | |
2177 | || (prev_pinfo | |
2178 | & (INSN_UNCOND_BRANCH_DELAY | |
2179 | | INSN_COND_BRANCH_DELAY | |
2180 | | INSN_COND_BRANCH_LIKELY)) | |
2181 | /* We do not swap with a trap instruction, since it | |
2182 | complicates trap handlers to have the trap | |
2183 | instruction be in a delay slot. */ | |
2184 | || (prev_pinfo & INSN_TRAP) | |
2185 | /* If the branch reads a register that the previous | |
2186 | instruction sets, we can not swap. */ | |
2187 | || (! mips_opts.mips16 | |
2188 | && (prev_pinfo & INSN_WRITE_GPR_T) | |
2189 | && insn_uses_reg (ip, | |
2190 | ((prev_insn.insn_opcode >> OP_SH_RT) | |
2191 | & OP_MASK_RT), | |
2192 | MIPS_GR_REG)) | |
2193 | || (! mips_opts.mips16 | |
2194 | && (prev_pinfo & INSN_WRITE_GPR_D) | |
2195 | && insn_uses_reg (ip, | |
2196 | ((prev_insn.insn_opcode >> OP_SH_RD) | |
2197 | & OP_MASK_RD), | |
2198 | MIPS_GR_REG)) | |
2199 | || (mips_opts.mips16 | |
2200 | && (((prev_pinfo & MIPS16_INSN_WRITE_X) | |
2201 | && insn_uses_reg (ip, | |
2202 | ((prev_insn.insn_opcode | |
2203 | >> MIPS16OP_SH_RX) | |
2204 | & MIPS16OP_MASK_RX), | |
2205 | MIPS16_REG)) | |
2206 | || ((prev_pinfo & MIPS16_INSN_WRITE_Y) | |
2207 | && insn_uses_reg (ip, | |
2208 | ((prev_insn.insn_opcode | |
2209 | >> MIPS16OP_SH_RY) | |
2210 | & MIPS16OP_MASK_RY), | |
2211 | MIPS16_REG)) | |
2212 | || ((prev_pinfo & MIPS16_INSN_WRITE_Z) | |
2213 | && insn_uses_reg (ip, | |
2214 | ((prev_insn.insn_opcode | |
2215 | >> MIPS16OP_SH_RZ) | |
2216 | & MIPS16OP_MASK_RZ), | |
2217 | MIPS16_REG)) | |
2218 | || ((prev_pinfo & MIPS16_INSN_WRITE_T) | |
2219 | && insn_uses_reg (ip, TREG, MIPS_GR_REG)) | |
2220 | || ((prev_pinfo & MIPS16_INSN_WRITE_31) | |
2221 | && insn_uses_reg (ip, RA, MIPS_GR_REG)) | |
2222 | || ((prev_pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
2223 | && insn_uses_reg (ip, | |
2224 | MIPS16OP_EXTRACT_REG32R (prev_insn. | |
2225 | insn_opcode), | |
2226 | MIPS_GR_REG)))) | |
2227 | /* If the branch writes a register that the previous | |
2228 | instruction sets, we can not swap (we know that | |
2229 | branches write only to RD or to $31). */ | |
2230 | || (! mips_opts.mips16 | |
2231 | && (prev_pinfo & INSN_WRITE_GPR_T) | |
2232 | && (((pinfo & INSN_WRITE_GPR_D) | |
2233 | && (((prev_insn.insn_opcode >> OP_SH_RT) & OP_MASK_RT) | |
2234 | == ((ip->insn_opcode >> OP_SH_RD) & OP_MASK_RD))) | |
2235 | || ((pinfo & INSN_WRITE_GPR_31) | |
2236 | && (((prev_insn.insn_opcode >> OP_SH_RT) | |
2237 | & OP_MASK_RT) | |
f9419b05 | 2238 | == RA)))) |
252b5132 RH |
2239 | || (! mips_opts.mips16 |
2240 | && (prev_pinfo & INSN_WRITE_GPR_D) | |
2241 | && (((pinfo & INSN_WRITE_GPR_D) | |
2242 | && (((prev_insn.insn_opcode >> OP_SH_RD) & OP_MASK_RD) | |
2243 | == ((ip->insn_opcode >> OP_SH_RD) & OP_MASK_RD))) | |
2244 | || ((pinfo & INSN_WRITE_GPR_31) | |
2245 | && (((prev_insn.insn_opcode >> OP_SH_RD) | |
2246 | & OP_MASK_RD) | |
f9419b05 | 2247 | == RA)))) |
252b5132 RH |
2248 | || (mips_opts.mips16 |
2249 | && (pinfo & MIPS16_INSN_WRITE_31) | |
2250 | && ((prev_pinfo & MIPS16_INSN_WRITE_31) | |
2251 | || ((prev_pinfo & MIPS16_INSN_WRITE_GPR_Y) | |
2252 | && (MIPS16OP_EXTRACT_REG32R (prev_insn.insn_opcode) | |
2253 | == RA)))) | |
2254 | /* If the branch writes a register that the previous | |
2255 | instruction reads, we can not swap (we know that | |
2256 | branches only write to RD or to $31). */ | |
2257 | || (! mips_opts.mips16 | |
2258 | && (pinfo & INSN_WRITE_GPR_D) | |
2259 | && insn_uses_reg (&prev_insn, | |
2260 | ((ip->insn_opcode >> OP_SH_RD) | |
2261 | & OP_MASK_RD), | |
2262 | MIPS_GR_REG)) | |
2263 | || (! mips_opts.mips16 | |
2264 | && (pinfo & INSN_WRITE_GPR_31) | |
f9419b05 | 2265 | && insn_uses_reg (&prev_insn, RA, MIPS_GR_REG)) |
252b5132 RH |
2266 | || (mips_opts.mips16 |
2267 | && (pinfo & MIPS16_INSN_WRITE_31) | |
2268 | && insn_uses_reg (&prev_insn, RA, MIPS_GR_REG)) | |
2269 | /* If we are generating embedded PIC code, the branch | |
2270 | might be expanded into a sequence which uses $at, so | |
2271 | we can't swap with an instruction which reads it. */ | |
2272 | || (mips_pic == EMBEDDED_PIC | |
2273 | && insn_uses_reg (&prev_insn, AT, MIPS_GR_REG)) | |
2274 | /* If the previous previous instruction has a load | |
2275 | delay, and sets a register that the branch reads, we | |
2276 | can not swap. */ | |
2277 | || (! mips_opts.mips16 | |
9ce8a5dd | 2278 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
bdaaa2e1 | 2279 | /* Itbl support may require additional care here. */ |
252b5132 RH |
2280 | && ((prev_prev_insn.insn_mo->pinfo & INSN_LOAD_COPROC_DELAY) |
2281 | || (! gpr_interlocks | |
2282 | && (prev_prev_insn.insn_mo->pinfo | |
2283 | & INSN_LOAD_MEMORY_DELAY))) | |
2284 | && insn_uses_reg (ip, | |
2285 | ((prev_prev_insn.insn_opcode >> OP_SH_RT) | |
2286 | & OP_MASK_RT), | |
2287 | MIPS_GR_REG)) | |
2288 | /* If one instruction sets a condition code and the | |
2289 | other one uses a condition code, we can not swap. */ | |
2290 | || ((pinfo & INSN_READ_COND_CODE) | |
2291 | && (prev_pinfo & INSN_WRITE_COND_CODE)) | |
2292 | || ((pinfo & INSN_WRITE_COND_CODE) | |
2293 | && (prev_pinfo & INSN_READ_COND_CODE)) | |
2294 | /* If the previous instruction uses the PC, we can not | |
2295 | swap. */ | |
2296 | || (mips_opts.mips16 | |
2297 | && (prev_pinfo & MIPS16_INSN_READ_PC)) | |
2298 | /* If the previous instruction was extended, we can not | |
2299 | swap. */ | |
2300 | || (mips_opts.mips16 && prev_insn_extended) | |
2301 | /* If the previous instruction had a fixup in mips16 | |
2302 | mode, we can not swap. This normally means that the | |
2303 | previous instruction was a 4 byte branch anyhow. */ | |
f6688943 | 2304 | || (mips_opts.mips16 && prev_insn_fixp[0]) |
bdaaa2e1 KH |
2305 | /* If the previous instruction is a sync, sync.l, or |
2306 | sync.p, we can not swap. */ | |
f173e82e | 2307 | || (prev_pinfo & INSN_SYNC)) |
252b5132 RH |
2308 | { |
2309 | /* We could do even better for unconditional branches to | |
2310 | portions of this object file; we could pick up the | |
2311 | instruction at the destination, put it in the delay | |
2312 | slot, and bump the destination address. */ | |
2313 | emit_nop (); | |
2314 | /* Update the previous insn information. */ | |
2315 | prev_prev_insn = *ip; | |
2316 | prev_insn.insn_mo = &dummy_opcode; | |
2317 | } | |
2318 | else | |
2319 | { | |
2320 | /* It looks like we can actually do the swap. */ | |
2321 | if (! mips_opts.mips16) | |
2322 | { | |
2323 | char *prev_f; | |
2324 | char temp[4]; | |
2325 | ||
2326 | prev_f = prev_insn_frag->fr_literal + prev_insn_where; | |
2327 | memcpy (temp, prev_f, 4); | |
2328 | memcpy (prev_f, f, 4); | |
2329 | memcpy (f, temp, 4); | |
f6688943 TS |
2330 | if (prev_insn_fixp[0]) |
2331 | { | |
2332 | prev_insn_fixp[0]->fx_frag = frag_now; | |
2333 | prev_insn_fixp[0]->fx_where = f - frag_now->fr_literal; | |
2334 | } | |
2335 | if (prev_insn_fixp[1]) | |
2336 | { | |
2337 | prev_insn_fixp[1]->fx_frag = frag_now; | |
2338 | prev_insn_fixp[1]->fx_where = f - frag_now->fr_literal; | |
2339 | } | |
2340 | if (prev_insn_fixp[2]) | |
252b5132 | 2341 | { |
f6688943 TS |
2342 | prev_insn_fixp[2]->fx_frag = frag_now; |
2343 | prev_insn_fixp[2]->fx_where = f - frag_now->fr_literal; | |
252b5132 | 2344 | } |
f6688943 | 2345 | if (fixp[0]) |
252b5132 | 2346 | { |
f6688943 TS |
2347 | fixp[0]->fx_frag = prev_insn_frag; |
2348 | fixp[0]->fx_where = prev_insn_where; | |
2349 | } | |
2350 | if (fixp[1]) | |
2351 | { | |
2352 | fixp[1]->fx_frag = prev_insn_frag; | |
2353 | fixp[1]->fx_where = prev_insn_where; | |
2354 | } | |
2355 | if (fixp[2]) | |
2356 | { | |
2357 | fixp[2]->fx_frag = prev_insn_frag; | |
2358 | fixp[2]->fx_where = prev_insn_where; | |
252b5132 RH |
2359 | } |
2360 | } | |
2361 | else | |
2362 | { | |
2363 | char *prev_f; | |
2364 | char temp[2]; | |
2365 | ||
f6688943 TS |
2366 | assert (prev_insn_fixp[0] == NULL); |
2367 | assert (prev_insn_fixp[1] == NULL); | |
2368 | assert (prev_insn_fixp[2] == NULL); | |
252b5132 RH |
2369 | prev_f = prev_insn_frag->fr_literal + prev_insn_where; |
2370 | memcpy (temp, prev_f, 2); | |
2371 | memcpy (prev_f, f, 2); | |
f6688943 | 2372 | if (*reloc_type != BFD_RELOC_MIPS16_JMP) |
252b5132 | 2373 | { |
f6688943 | 2374 | assert (*reloc_type == BFD_RELOC_UNUSED); |
252b5132 RH |
2375 | memcpy (f, temp, 2); |
2376 | } | |
2377 | else | |
2378 | { | |
2379 | memcpy (f, f + 2, 2); | |
2380 | memcpy (f + 2, temp, 2); | |
2381 | } | |
f6688943 TS |
2382 | if (fixp[0]) |
2383 | { | |
2384 | fixp[0]->fx_frag = prev_insn_frag; | |
2385 | fixp[0]->fx_where = prev_insn_where; | |
2386 | } | |
2387 | if (fixp[1]) | |
2388 | { | |
2389 | fixp[1]->fx_frag = prev_insn_frag; | |
2390 | fixp[1]->fx_where = prev_insn_where; | |
2391 | } | |
2392 | if (fixp[2]) | |
252b5132 | 2393 | { |
f6688943 TS |
2394 | fixp[2]->fx_frag = prev_insn_frag; |
2395 | fixp[2]->fx_where = prev_insn_where; | |
252b5132 RH |
2396 | } |
2397 | } | |
2398 | ||
2399 | /* Update the previous insn information; leave prev_insn | |
2400 | unchanged. */ | |
2401 | prev_prev_insn = *ip; | |
2402 | } | |
2403 | prev_insn_is_delay_slot = 1; | |
2404 | ||
2405 | /* If that was an unconditional branch, forget the previous | |
2406 | insn information. */ | |
2407 | if (pinfo & INSN_UNCOND_BRANCH_DELAY) | |
2408 | { | |
2409 | prev_prev_insn.insn_mo = &dummy_opcode; | |
2410 | prev_insn.insn_mo = &dummy_opcode; | |
2411 | } | |
2412 | ||
f6688943 TS |
2413 | prev_insn_fixp[0] = NULL; |
2414 | prev_insn_fixp[1] = NULL; | |
2415 | prev_insn_fixp[2] = NULL; | |
2416 | prev_insn_reloc_type[0] = BFD_RELOC_UNUSED; | |
2417 | prev_insn_reloc_type[1] = BFD_RELOC_UNUSED; | |
2418 | prev_insn_reloc_type[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2419 | prev_insn_extended = 0; |
2420 | } | |
2421 | else if (pinfo & INSN_COND_BRANCH_LIKELY) | |
2422 | { | |
2423 | /* We don't yet optimize a branch likely. What we should do | |
2424 | is look at the target, copy the instruction found there | |
2425 | into the delay slot, and increment the branch to jump to | |
2426 | the next instruction. */ | |
2427 | emit_nop (); | |
2428 | /* Update the previous insn information. */ | |
2429 | prev_prev_insn = *ip; | |
2430 | prev_insn.insn_mo = &dummy_opcode; | |
f6688943 TS |
2431 | prev_insn_fixp[0] = NULL; |
2432 | prev_insn_fixp[1] = NULL; | |
2433 | prev_insn_fixp[2] = NULL; | |
2434 | prev_insn_reloc_type[0] = BFD_RELOC_UNUSED; | |
2435 | prev_insn_reloc_type[1] = BFD_RELOC_UNUSED; | |
2436 | prev_insn_reloc_type[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2437 | prev_insn_extended = 0; |
2438 | } | |
2439 | else | |
2440 | { | |
2441 | /* Update the previous insn information. */ | |
2442 | if (nops > 0) | |
2443 | prev_prev_insn.insn_mo = &dummy_opcode; | |
2444 | else | |
2445 | prev_prev_insn = prev_insn; | |
2446 | prev_insn = *ip; | |
2447 | ||
2448 | /* Any time we see a branch, we always fill the delay slot | |
2449 | immediately; since this insn is not a branch, we know it | |
2450 | is not in a delay slot. */ | |
2451 | prev_insn_is_delay_slot = 0; | |
2452 | ||
f6688943 TS |
2453 | prev_insn_fixp[0] = fixp[0]; |
2454 | prev_insn_fixp[1] = fixp[1]; | |
2455 | prev_insn_fixp[2] = fixp[2]; | |
2456 | prev_insn_reloc_type[0] = reloc_type[0]; | |
2457 | prev_insn_reloc_type[1] = reloc_type[1]; | |
2458 | prev_insn_reloc_type[2] = reloc_type[2]; | |
252b5132 RH |
2459 | if (mips_opts.mips16) |
2460 | prev_insn_extended = (ip->use_extend | |
f6688943 | 2461 | || *reloc_type > BFD_RELOC_UNUSED); |
252b5132 RH |
2462 | } |
2463 | ||
2464 | prev_prev_insn_unreordered = prev_insn_unreordered; | |
2465 | prev_insn_unreordered = 0; | |
2466 | prev_insn_frag = frag_now; | |
2467 | prev_insn_where = f - frag_now->fr_literal; | |
2468 | prev_insn_valid = 1; | |
2469 | } | |
2470 | else if (place == NULL) | |
2471 | { | |
2472 | /* We need to record a bit of information even when we are not | |
2473 | reordering, in order to determine the base address for mips16 | |
2474 | PC relative relocs. */ | |
2475 | prev_prev_insn = prev_insn; | |
2476 | prev_insn = *ip; | |
f6688943 TS |
2477 | prev_insn_reloc_type[0] = reloc_type[0]; |
2478 | prev_insn_reloc_type[1] = reloc_type[1]; | |
2479 | prev_insn_reloc_type[2] = reloc_type[2]; | |
252b5132 RH |
2480 | prev_prev_insn_unreordered = prev_insn_unreordered; |
2481 | prev_insn_unreordered = 1; | |
2482 | } | |
2483 | ||
2484 | /* We just output an insn, so the next one doesn't have a label. */ | |
2485 | mips_clear_insn_labels (); | |
2486 | ||
2487 | /* We must ensure that a fixup associated with an unmatched %hi | |
2488 | reloc does not become a variant frag. Otherwise, the | |
2489 | rearrangement of %hi relocs in frob_file may confuse | |
2490 | tc_gen_reloc. */ | |
2491 | if (unmatched_hi) | |
2492 | { | |
2493 | frag_wane (frag_now); | |
2494 | frag_new (0); | |
2495 | } | |
2496 | } | |
2497 | ||
2498 | /* This function forgets that there was any previous instruction or | |
2499 | label. If PRESERVE is non-zero, it remembers enough information to | |
bdaaa2e1 | 2500 | know whether nops are needed before a noreorder section. */ |
252b5132 RH |
2501 | |
2502 | static void | |
2503 | mips_no_prev_insn (preserve) | |
2504 | int preserve; | |
2505 | { | |
2506 | if (! preserve) | |
2507 | { | |
2508 | prev_insn.insn_mo = &dummy_opcode; | |
2509 | prev_prev_insn.insn_mo = &dummy_opcode; | |
2510 | prev_nop_frag = NULL; | |
2511 | prev_nop_frag_holds = 0; | |
2512 | prev_nop_frag_required = 0; | |
2513 | prev_nop_frag_since = 0; | |
2514 | } | |
2515 | prev_insn_valid = 0; | |
2516 | prev_insn_is_delay_slot = 0; | |
2517 | prev_insn_unreordered = 0; | |
2518 | prev_insn_extended = 0; | |
f6688943 TS |
2519 | prev_insn_reloc_type[0] = BFD_RELOC_UNUSED; |
2520 | prev_insn_reloc_type[1] = BFD_RELOC_UNUSED; | |
2521 | prev_insn_reloc_type[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2522 | prev_prev_insn_unreordered = 0; |
2523 | mips_clear_insn_labels (); | |
2524 | } | |
2525 | ||
2526 | /* This function must be called whenever we turn on noreorder or emit | |
2527 | something other than instructions. It inserts any NOPS which might | |
2528 | be needed by the previous instruction, and clears the information | |
2529 | kept for the previous instructions. The INSNS parameter is true if | |
bdaaa2e1 | 2530 | instructions are to follow. */ |
252b5132 RH |
2531 | |
2532 | static void | |
2533 | mips_emit_delays (insns) | |
2534 | boolean insns; | |
2535 | { | |
2536 | if (! mips_opts.noreorder) | |
2537 | { | |
2538 | int nops; | |
2539 | ||
2540 | nops = 0; | |
2541 | if ((! mips_opts.mips16 | |
9ce8a5dd | 2542 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
2543 | && (! cop_interlocks |
2544 | && (prev_insn.insn_mo->pinfo | |
2545 | & (INSN_LOAD_COPROC_DELAY | |
2546 | | INSN_COPROC_MOVE_DELAY | |
2547 | | INSN_WRITE_COND_CODE)))) | |
2548 | || (! hilo_interlocks | |
2549 | && (prev_insn.insn_mo->pinfo | |
2550 | & (INSN_READ_LO | |
2551 | | INSN_READ_HI))) | |
2552 | || (! mips_opts.mips16 | |
2553 | && ! gpr_interlocks | |
bdaaa2e1 | 2554 | && (prev_insn.insn_mo->pinfo |
252b5132 RH |
2555 | & INSN_LOAD_MEMORY_DELAY)) |
2556 | || (! mips_opts.mips16 | |
e7af610e | 2557 | && mips_opts.isa == ISA_MIPS1 |
252b5132 RH |
2558 | && (prev_insn.insn_mo->pinfo |
2559 | & INSN_COPROC_MEMORY_DELAY))) | |
2560 | { | |
beae10d5 | 2561 | /* Itbl support may require additional care here. */ |
252b5132 RH |
2562 | ++nops; |
2563 | if ((! mips_opts.mips16 | |
9ce8a5dd | 2564 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
2565 | && (! cop_interlocks |
2566 | && prev_insn.insn_mo->pinfo & INSN_WRITE_COND_CODE)) | |
2567 | || (! hilo_interlocks | |
2568 | && ((prev_insn.insn_mo->pinfo & INSN_READ_HI) | |
2569 | || (prev_insn.insn_mo->pinfo & INSN_READ_LO)))) | |
2570 | ++nops; | |
2571 | ||
2572 | if (prev_insn_unreordered) | |
2573 | nops = 0; | |
2574 | } | |
2575 | else if ((! mips_opts.mips16 | |
9ce8a5dd | 2576 | && ISA_HAS_COPROC_DELAYS (mips_opts.isa) |
252b5132 RH |
2577 | && (! cop_interlocks |
2578 | && prev_prev_insn.insn_mo->pinfo & INSN_WRITE_COND_CODE)) | |
2579 | || (! hilo_interlocks | |
2580 | && ((prev_prev_insn.insn_mo->pinfo & INSN_READ_HI) | |
2581 | || (prev_prev_insn.insn_mo->pinfo & INSN_READ_LO)))) | |
2582 | { | |
beae10d5 | 2583 | /* Itbl support may require additional care here. */ |
252b5132 RH |
2584 | if (! prev_prev_insn_unreordered) |
2585 | ++nops; | |
2586 | } | |
2587 | ||
2588 | if (nops > 0) | |
2589 | { | |
2590 | struct insn_label_list *l; | |
2591 | ||
2592 | if (insns) | |
2593 | { | |
2594 | /* Record the frag which holds the nop instructions, so | |
2595 | that we can remove them if we don't need them. */ | |
2596 | frag_grow (mips_opts.mips16 ? nops * 2 : nops * 4); | |
2597 | prev_nop_frag = frag_now; | |
2598 | prev_nop_frag_holds = nops; | |
2599 | prev_nop_frag_required = 0; | |
2600 | prev_nop_frag_since = 0; | |
2601 | } | |
2602 | ||
2603 | for (; nops > 0; --nops) | |
2604 | emit_nop (); | |
2605 | ||
2606 | if (insns) | |
2607 | { | |
2608 | /* Move on to a new frag, so that it is safe to simply | |
bdaaa2e1 | 2609 | decrease the size of prev_nop_frag. */ |
252b5132 RH |
2610 | frag_wane (frag_now); |
2611 | frag_new (0); | |
2612 | } | |
2613 | ||
2614 | for (l = insn_labels; l != NULL; l = l->next) | |
2615 | { | |
98aa84af AM |
2616 | valueT val; |
2617 | ||
252b5132 | 2618 | assert (S_GET_SEGMENT (l->label) == now_seg); |
49309057 | 2619 | symbol_set_frag (l->label, frag_now); |
98aa84af | 2620 | val = (valueT) frag_now_fix (); |
252b5132 RH |
2621 | /* mips16 text labels are stored as odd. */ |
2622 | if (mips_opts.mips16) | |
f9419b05 | 2623 | ++val; |
98aa84af | 2624 | S_SET_VALUE (l->label, val); |
252b5132 RH |
2625 | } |
2626 | } | |
2627 | } | |
2628 | ||
2629 | /* Mark instruction labels in mips16 mode. */ | |
f9419b05 | 2630 | if (insns) |
252b5132 RH |
2631 | mips16_mark_labels (); |
2632 | ||
2633 | mips_no_prev_insn (insns); | |
2634 | } | |
2635 | ||
2636 | /* Build an instruction created by a macro expansion. This is passed | |
2637 | a pointer to the count of instructions created so far, an | |
2638 | expression, the name of the instruction to build, an operand format | |
2639 | string, and corresponding arguments. */ | |
2640 | ||
2641 | #ifdef USE_STDARG | |
2642 | static void | |
2643 | macro_build (char *place, | |
2644 | int *counter, | |
2645 | expressionS * ep, | |
2646 | const char *name, | |
2647 | const char *fmt, | |
2648 | ...) | |
2649 | #else | |
2650 | static void | |
2651 | macro_build (place, counter, ep, name, fmt, va_alist) | |
2652 | char *place; | |
2653 | int *counter; | |
2654 | expressionS *ep; | |
2655 | const char *name; | |
2656 | const char *fmt; | |
2657 | va_dcl | |
2658 | #endif | |
2659 | { | |
2660 | struct mips_cl_insn insn; | |
f6688943 | 2661 | bfd_reloc_code_real_type r[3]; |
252b5132 | 2662 | va_list args; |
252b5132 RH |
2663 | |
2664 | #ifdef USE_STDARG | |
2665 | va_start (args, fmt); | |
2666 | #else | |
2667 | va_start (args); | |
2668 | #endif | |
2669 | ||
2670 | /* | |
2671 | * If the macro is about to expand into a second instruction, | |
2672 | * print a warning if needed. We need to pass ip as a parameter | |
2673 | * to generate a better warning message here... | |
2674 | */ | |
2675 | if (mips_opts.warn_about_macros && place == NULL && *counter == 1) | |
2676 | as_warn (_("Macro instruction expanded into multiple instructions")); | |
2677 | ||
80cc45a5 EC |
2678 | /* |
2679 | * If the macro is about to expand into a second instruction, | |
2680 | * and it is in a delay slot, print a warning. | |
2681 | */ | |
2682 | if (place == NULL | |
2683 | && *counter == 1 | |
2684 | && mips_opts.noreorder | |
2685 | && (prev_prev_insn.insn_mo->pinfo | |
2686 | & (INSN_UNCOND_BRANCH_DELAY | INSN_COND_BRANCH_DELAY | |
2b2e39bf | 2687 | | INSN_COND_BRANCH_LIKELY)) != 0) |
80cc45a5 EC |
2688 | as_warn (_("Macro instruction expanded into multiple instructions in a branch delay slot")); |
2689 | ||
252b5132 | 2690 | if (place == NULL) |
f9419b05 | 2691 | ++*counter; /* bump instruction counter */ |
252b5132 RH |
2692 | |
2693 | if (mips_opts.mips16) | |
2694 | { | |
2695 | mips16_macro_build (place, counter, ep, name, fmt, args); | |
2696 | va_end (args); | |
2697 | return; | |
2698 | } | |
2699 | ||
f6688943 TS |
2700 | r[0] = BFD_RELOC_UNUSED; |
2701 | r[1] = BFD_RELOC_UNUSED; | |
2702 | r[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
2703 | insn.insn_mo = (struct mips_opcode *) hash_find (op_hash, name); |
2704 | assert (insn.insn_mo); | |
2705 | assert (strcmp (name, insn.insn_mo->name) == 0); | |
2706 | ||
2707 | /* Search until we get a match for NAME. */ | |
2708 | while (1) | |
2709 | { | |
deec1734 CD |
2710 | /* It is assumed here that macros will never generate |
2711 | MDMX or MIPS-3D instructions. */ | |
252b5132 RH |
2712 | if (strcmp (fmt, insn.insn_mo->args) == 0 |
2713 | && insn.insn_mo->pinfo != INSN_MACRO | |
aec421e0 TS |
2714 | && OPCODE_IS_MEMBER (insn.insn_mo, |
2715 | (mips_opts.isa | |
2716 | | (mips_opts.mips16 ? INSN_MIPS16 : 0)), | |
2717 | mips_arch) | |
ec68c924 | 2718 | && (mips_arch != CPU_R4650 || (insn.insn_mo->pinfo & FP_D) == 0)) |
252b5132 RH |
2719 | break; |
2720 | ||
2721 | ++insn.insn_mo; | |
2722 | assert (insn.insn_mo->name); | |
2723 | assert (strcmp (name, insn.insn_mo->name) == 0); | |
2724 | } | |
2725 | ||
2726 | insn.insn_opcode = insn.insn_mo->match; | |
2727 | for (;;) | |
2728 | { | |
2729 | switch (*fmt++) | |
2730 | { | |
2731 | case '\0': | |
2732 | break; | |
2733 | ||
2734 | case ',': | |
2735 | case '(': | |
2736 | case ')': | |
2737 | continue; | |
2738 | ||
2739 | case 't': | |
2740 | case 'w': | |
2741 | case 'E': | |
38487616 | 2742 | insn.insn_opcode |= va_arg (args, int) << OP_SH_RT; |
252b5132 RH |
2743 | continue; |
2744 | ||
2745 | case 'c': | |
38487616 TS |
2746 | insn.insn_opcode |= va_arg (args, int) << OP_SH_CODE; |
2747 | continue; | |
2748 | ||
252b5132 RH |
2749 | case 'T': |
2750 | case 'W': | |
38487616 | 2751 | insn.insn_opcode |= va_arg (args, int) << OP_SH_FT; |
252b5132 RH |
2752 | continue; |
2753 | ||
2754 | case 'd': | |
2755 | case 'G': | |
38487616 | 2756 | insn.insn_opcode |= va_arg (args, int) << OP_SH_RD; |
252b5132 RH |
2757 | continue; |
2758 | ||
4372b673 NC |
2759 | case 'U': |
2760 | { | |
2761 | int tmp = va_arg (args, int); | |
2762 | ||
38487616 TS |
2763 | insn.insn_opcode |= tmp << OP_SH_RT; |
2764 | insn.insn_opcode |= tmp << OP_SH_RD; | |
beae10d5 | 2765 | continue; |
4372b673 NC |
2766 | } |
2767 | ||
252b5132 RH |
2768 | case 'V': |
2769 | case 'S': | |
38487616 | 2770 | insn.insn_opcode |= va_arg (args, int) << OP_SH_FS; |
252b5132 RH |
2771 | continue; |
2772 | ||
2773 | case 'z': | |
2774 | continue; | |
2775 | ||
2776 | case '<': | |
38487616 | 2777 | insn.insn_opcode |= va_arg (args, int) << OP_SH_SHAMT; |
252b5132 RH |
2778 | continue; |
2779 | ||
2780 | case 'D': | |
38487616 | 2781 | insn.insn_opcode |= va_arg (args, int) << OP_SH_FD; |
252b5132 RH |
2782 | continue; |
2783 | ||
2784 | case 'B': | |
38487616 | 2785 | insn.insn_opcode |= va_arg (args, int) << OP_SH_CODE20; |
252b5132 RH |
2786 | continue; |
2787 | ||
4372b673 | 2788 | case 'J': |
38487616 | 2789 | insn.insn_opcode |= va_arg (args, int) << OP_SH_CODE19; |
4372b673 NC |
2790 | continue; |
2791 | ||
252b5132 | 2792 | case 'q': |
38487616 | 2793 | insn.insn_opcode |= va_arg (args, int) << OP_SH_CODE2; |
252b5132 RH |
2794 | continue; |
2795 | ||
2796 | case 'b': | |
2797 | case 's': | |
2798 | case 'r': | |
2799 | case 'v': | |
38487616 | 2800 | insn.insn_opcode |= va_arg (args, int) << OP_SH_RS; |
252b5132 RH |
2801 | continue; |
2802 | ||
2803 | case 'i': | |
2804 | case 'j': | |
2805 | case 'o': | |
f6688943 | 2806 | *r = (bfd_reloc_code_real_type) va_arg (args, int); |
cdf6fd85 | 2807 | assert (*r == BFD_RELOC_GPREL16 |
f6688943 TS |
2808 | || *r == BFD_RELOC_MIPS_LITERAL |
2809 | || *r == BFD_RELOC_MIPS_HIGHER | |
2810 | || *r == BFD_RELOC_HI16_S | |
2811 | || *r == BFD_RELOC_LO16 | |
2812 | || *r == BFD_RELOC_MIPS_GOT16 | |
2813 | || *r == BFD_RELOC_MIPS_CALL16 | |
438c16b8 TS |
2814 | || *r == BFD_RELOC_MIPS_GOT_DISP |
2815 | || *r == BFD_RELOC_MIPS_GOT_PAGE | |
2816 | || *r == BFD_RELOC_MIPS_GOT_OFST | |
f6688943 TS |
2817 | || *r == BFD_RELOC_MIPS_GOT_LO16 |
2818 | || *r == BFD_RELOC_MIPS_CALL_LO16 | |
252b5132 | 2819 | || (ep->X_op == O_subtract |
f6688943 | 2820 | && *r == BFD_RELOC_PCREL_LO16)); |
252b5132 RH |
2821 | continue; |
2822 | ||
2823 | case 'u': | |
f6688943 | 2824 | *r = (bfd_reloc_code_real_type) va_arg (args, int); |
252b5132 RH |
2825 | assert (ep != NULL |
2826 | && (ep->X_op == O_constant | |
2827 | || (ep->X_op == O_symbol | |
f6688943 TS |
2828 | && (*r == BFD_RELOC_MIPS_HIGHEST |
2829 | || *r == BFD_RELOC_HI16_S | |
2830 | || *r == BFD_RELOC_HI16 | |
2831 | || *r == BFD_RELOC_GPREL16 | |
2832 | || *r == BFD_RELOC_MIPS_GOT_HI16 | |
2833 | || *r == BFD_RELOC_MIPS_CALL_HI16)) | |
252b5132 | 2834 | || (ep->X_op == O_subtract |
f6688943 | 2835 | && *r == BFD_RELOC_PCREL_HI16_S))); |
252b5132 RH |
2836 | continue; |
2837 | ||
2838 | case 'p': | |
2839 | assert (ep != NULL); | |
2840 | /* | |
2841 | * This allows macro() to pass an immediate expression for | |
2842 | * creating short branches without creating a symbol. | |
2843 | * Note that the expression still might come from the assembly | |
2844 | * input, in which case the value is not checked for range nor | |
2845 | * is a relocation entry generated (yuck). | |
2846 | */ | |
2847 | if (ep->X_op == O_constant) | |
2848 | { | |
2849 | insn.insn_opcode |= (ep->X_add_number >> 2) & 0xffff; | |
2850 | ep = NULL; | |
2851 | } | |
2852 | else | |
cb56d3d3 | 2853 | if (mips_pic == EMBEDDED_PIC) |
f6688943 | 2854 | *r = BFD_RELOC_16_PCREL_S2; |
cb56d3d3 | 2855 | else |
f6688943 | 2856 | *r = BFD_RELOC_16_PCREL; |
252b5132 RH |
2857 | continue; |
2858 | ||
2859 | case 'a': | |
2860 | assert (ep != NULL); | |
f6688943 | 2861 | *r = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
2862 | continue; |
2863 | ||
2864 | case 'C': | |
2865 | insn.insn_opcode |= va_arg (args, unsigned long); | |
2866 | continue; | |
2867 | ||
2868 | default: | |
2869 | internalError (); | |
2870 | } | |
2871 | break; | |
2872 | } | |
2873 | va_end (args); | |
f6688943 | 2874 | assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 RH |
2875 | |
2876 | append_insn (place, &insn, ep, r, false); | |
2877 | } | |
2878 | ||
2879 | static void | |
2880 | mips16_macro_build (place, counter, ep, name, fmt, args) | |
2881 | char *place; | |
43841e91 | 2882 | int *counter ATTRIBUTE_UNUSED; |
252b5132 RH |
2883 | expressionS *ep; |
2884 | const char *name; | |
2885 | const char *fmt; | |
2886 | va_list args; | |
2887 | { | |
2888 | struct mips_cl_insn insn; | |
f6688943 TS |
2889 | bfd_reloc_code_real_type r[3] |
2890 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
252b5132 | 2891 | |
252b5132 RH |
2892 | insn.insn_mo = (struct mips_opcode *) hash_find (mips16_op_hash, name); |
2893 | assert (insn.insn_mo); | |
2894 | assert (strcmp (name, insn.insn_mo->name) == 0); | |
2895 | ||
2896 | while (strcmp (fmt, insn.insn_mo->args) != 0 | |
2897 | || insn.insn_mo->pinfo == INSN_MACRO) | |
2898 | { | |
2899 | ++insn.insn_mo; | |
2900 | assert (insn.insn_mo->name); | |
2901 | assert (strcmp (name, insn.insn_mo->name) == 0); | |
2902 | } | |
2903 | ||
2904 | insn.insn_opcode = insn.insn_mo->match; | |
2905 | insn.use_extend = false; | |
2906 | ||
2907 | for (;;) | |
2908 | { | |
2909 | int c; | |
2910 | ||
2911 | c = *fmt++; | |
2912 | switch (c) | |
2913 | { | |
2914 | case '\0': | |
2915 | break; | |
2916 | ||
2917 | case ',': | |
2918 | case '(': | |
2919 | case ')': | |
2920 | continue; | |
2921 | ||
2922 | case 'y': | |
2923 | case 'w': | |
2924 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_RY; | |
2925 | continue; | |
2926 | ||
2927 | case 'x': | |
2928 | case 'v': | |
2929 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_RX; | |
2930 | continue; | |
2931 | ||
2932 | case 'z': | |
2933 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_RZ; | |
2934 | continue; | |
2935 | ||
2936 | case 'Z': | |
2937 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_MOVE32Z; | |
2938 | continue; | |
2939 | ||
2940 | case '0': | |
2941 | case 'S': | |
2942 | case 'P': | |
2943 | case 'R': | |
2944 | continue; | |
2945 | ||
2946 | case 'X': | |
2947 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_REGR32; | |
2948 | continue; | |
2949 | ||
2950 | case 'Y': | |
2951 | { | |
2952 | int regno; | |
2953 | ||
2954 | regno = va_arg (args, int); | |
2955 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
2956 | insn.insn_opcode |= regno << MIPS16OP_SH_REG32R; | |
2957 | } | |
2958 | continue; | |
2959 | ||
2960 | case '<': | |
2961 | case '>': | |
2962 | case '4': | |
2963 | case '5': | |
2964 | case 'H': | |
2965 | case 'W': | |
2966 | case 'D': | |
2967 | case 'j': | |
2968 | case '8': | |
2969 | case 'V': | |
2970 | case 'C': | |
2971 | case 'U': | |
2972 | case 'k': | |
2973 | case 'K': | |
2974 | case 'p': | |
2975 | case 'q': | |
2976 | { | |
2977 | assert (ep != NULL); | |
2978 | ||
2979 | if (ep->X_op != O_constant) | |
874e8986 | 2980 | *r = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
2981 | else |
2982 | { | |
c4e7957c TS |
2983 | mips16_immed (NULL, 0, c, ep->X_add_number, false, false, |
2984 | false, &insn.insn_opcode, &insn.use_extend, | |
2985 | &insn.extend); | |
252b5132 | 2986 | ep = NULL; |
f6688943 | 2987 | *r = BFD_RELOC_UNUSED; |
252b5132 RH |
2988 | } |
2989 | } | |
2990 | continue; | |
2991 | ||
2992 | case '6': | |
2993 | insn.insn_opcode |= va_arg (args, int) << MIPS16OP_SH_IMM6; | |
2994 | continue; | |
2995 | } | |
2996 | ||
2997 | break; | |
2998 | } | |
2999 | ||
f6688943 | 3000 | assert (*r == BFD_RELOC_UNUSED ? ep == NULL : ep != NULL); |
252b5132 RH |
3001 | |
3002 | append_insn (place, &insn, ep, r, false); | |
3003 | } | |
3004 | ||
438c16b8 TS |
3005 | /* |
3006 | * Generate a "jalr" instruction with a relocation hint to the called | |
3007 | * function. This occurs in NewABI PIC code. | |
3008 | */ | |
3009 | static void | |
3010 | macro_build_jalr (icnt, ep) | |
3011 | int icnt; | |
3012 | expressionS *ep; | |
3013 | { | |
f21f8242 AO |
3014 | char *f; |
3015 | ||
438c16b8 | 3016 | if (HAVE_NEWABI) |
f21f8242 AO |
3017 | { |
3018 | frag_grow (4); | |
3019 | f = frag_more (0); | |
3020 | } | |
438c16b8 TS |
3021 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "jalr", "d,s", |
3022 | RA, PIC_CALL_REG); | |
3023 | if (HAVE_NEWABI) | |
f21f8242 AO |
3024 | fix_new_exp (frag_now, f - frag_now->fr_literal, |
3025 | 0, ep, false, BFD_RELOC_MIPS_JALR); | |
438c16b8 TS |
3026 | } |
3027 | ||
252b5132 RH |
3028 | /* |
3029 | * Generate a "lui" instruction. | |
3030 | */ | |
3031 | static void | |
3032 | macro_build_lui (place, counter, ep, regnum) | |
3033 | char *place; | |
3034 | int *counter; | |
3035 | expressionS *ep; | |
3036 | int regnum; | |
3037 | { | |
3038 | expressionS high_expr; | |
3039 | struct mips_cl_insn insn; | |
f6688943 TS |
3040 | bfd_reloc_code_real_type r[3] |
3041 | = {BFD_RELOC_UNUSED, BFD_RELOC_UNUSED, BFD_RELOC_UNUSED}; | |
5a38dc70 AM |
3042 | const char *name = "lui"; |
3043 | const char *fmt = "t,u"; | |
252b5132 RH |
3044 | |
3045 | assert (! mips_opts.mips16); | |
3046 | ||
3047 | if (place == NULL) | |
3048 | high_expr = *ep; | |
3049 | else | |
3050 | { | |
3051 | high_expr.X_op = O_constant; | |
3052 | high_expr.X_add_number = ep->X_add_number; | |
3053 | } | |
3054 | ||
3055 | if (high_expr.X_op == O_constant) | |
3056 | { | |
3057 | /* we can compute the instruction now without a relocation entry */ | |
e7d556df TS |
3058 | high_expr.X_add_number = ((high_expr.X_add_number + 0x8000) |
3059 | >> 16) & 0xffff; | |
f6688943 | 3060 | *r = BFD_RELOC_UNUSED; |
252b5132 | 3061 | } |
f6688943 | 3062 | else if (! HAVE_NEWABI) |
252b5132 RH |
3063 | { |
3064 | assert (ep->X_op == O_symbol); | |
3065 | /* _gp_disp is a special case, used from s_cpload. */ | |
3066 | assert (mips_pic == NO_PIC | |
3067 | || strcmp (S_GET_NAME (ep->X_add_symbol), "_gp_disp") == 0); | |
f6688943 | 3068 | *r = BFD_RELOC_HI16_S; |
252b5132 RH |
3069 | } |
3070 | ||
3071 | /* | |
3072 | * If the macro is about to expand into a second instruction, | |
3073 | * print a warning if needed. We need to pass ip as a parameter | |
3074 | * to generate a better warning message here... | |
3075 | */ | |
3076 | if (mips_opts.warn_about_macros && place == NULL && *counter == 1) | |
3077 | as_warn (_("Macro instruction expanded into multiple instructions")); | |
3078 | ||
3079 | if (place == NULL) | |
f9419b05 | 3080 | ++*counter; /* bump instruction counter */ |
252b5132 RH |
3081 | |
3082 | insn.insn_mo = (struct mips_opcode *) hash_find (op_hash, name); | |
3083 | assert (insn.insn_mo); | |
3084 | assert (strcmp (name, insn.insn_mo->name) == 0); | |
3085 | assert (strcmp (fmt, insn.insn_mo->args) == 0); | |
3086 | ||
3087 | insn.insn_opcode = insn.insn_mo->match | (regnum << OP_SH_RT); | |
f6688943 | 3088 | if (*r == BFD_RELOC_UNUSED) |
252b5132 RH |
3089 | { |
3090 | insn.insn_opcode |= high_expr.X_add_number; | |
3091 | append_insn (place, &insn, NULL, r, false); | |
3092 | } | |
3093 | else | |
3094 | append_insn (place, &insn, &high_expr, r, false); | |
3095 | } | |
3096 | ||
3097 | /* set_at() | |
3098 | * Generates code to set the $at register to true (one) | |
3099 | * if reg is less than the immediate expression. | |
3100 | */ | |
3101 | static void | |
3102 | set_at (counter, reg, unsignedp) | |
3103 | int *counter; | |
3104 | int reg; | |
3105 | int unsignedp; | |
3106 | { | |
3107 | if (imm_expr.X_op == O_constant | |
3108 | && imm_expr.X_add_number >= -0x8000 | |
3109 | && imm_expr.X_add_number < 0x8000) | |
3110 | macro_build ((char *) NULL, counter, &imm_expr, | |
3111 | unsignedp ? "sltiu" : "slti", | |
3112 | "t,r,j", AT, reg, (int) BFD_RELOC_LO16); | |
3113 | else | |
3114 | { | |
4d34fb5f | 3115 | load_register (counter, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 | 3116 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
252b5132 RH |
3117 | unsignedp ? "sltu" : "slt", |
3118 | "d,v,t", AT, reg, AT); | |
3119 | } | |
3120 | } | |
3121 | ||
3122 | /* Warn if an expression is not a constant. */ | |
3123 | ||
3124 | static void | |
3125 | check_absolute_expr (ip, ex) | |
3126 | struct mips_cl_insn *ip; | |
3127 | expressionS *ex; | |
3128 | { | |
3129 | if (ex->X_op == O_big) | |
3130 | as_bad (_("unsupported large constant")); | |
3131 | else if (ex->X_op != O_constant) | |
3132 | as_bad (_("Instruction %s requires absolute expression"), ip->insn_mo->name); | |
3133 | } | |
3134 | ||
3135 | /* Count the leading zeroes by performing a binary chop. This is a | |
3136 | bulky bit of source, but performance is a LOT better for the | |
3137 | majority of values than a simple loop to count the bits: | |
3138 | for (lcnt = 0; (lcnt < 32); lcnt++) | |
3139 | if ((v) & (1 << (31 - lcnt))) | |
3140 | break; | |
3141 | However it is not code size friendly, and the gain will drop a bit | |
3142 | on certain cached systems. | |
3143 | */ | |
3144 | #define COUNT_TOP_ZEROES(v) \ | |
3145 | (((v) & ~0xffff) == 0 \ | |
3146 | ? ((v) & ~0xff) == 0 \ | |
3147 | ? ((v) & ~0xf) == 0 \ | |
3148 | ? ((v) & ~0x3) == 0 \ | |
3149 | ? ((v) & ~0x1) == 0 \ | |
3150 | ? !(v) \ | |
3151 | ? 32 \ | |
3152 | : 31 \ | |
3153 | : 30 \ | |
3154 | : ((v) & ~0x7) == 0 \ | |
3155 | ? 29 \ | |
3156 | : 28 \ | |
3157 | : ((v) & ~0x3f) == 0 \ | |
3158 | ? ((v) & ~0x1f) == 0 \ | |
3159 | ? 27 \ | |
3160 | : 26 \ | |
3161 | : ((v) & ~0x7f) == 0 \ | |
3162 | ? 25 \ | |
3163 | : 24 \ | |
3164 | : ((v) & ~0xfff) == 0 \ | |
3165 | ? ((v) & ~0x3ff) == 0 \ | |
3166 | ? ((v) & ~0x1ff) == 0 \ | |
3167 | ? 23 \ | |
3168 | : 22 \ | |
3169 | : ((v) & ~0x7ff) == 0 \ | |
3170 | ? 21 \ | |
3171 | : 20 \ | |
3172 | : ((v) & ~0x3fff) == 0 \ | |
3173 | ? ((v) & ~0x1fff) == 0 \ | |
3174 | ? 19 \ | |
3175 | : 18 \ | |
3176 | : ((v) & ~0x7fff) == 0 \ | |
3177 | ? 17 \ | |
3178 | : 16 \ | |
3179 | : ((v) & ~0xffffff) == 0 \ | |
3180 | ? ((v) & ~0xfffff) == 0 \ | |
3181 | ? ((v) & ~0x3ffff) == 0 \ | |
3182 | ? ((v) & ~0x1ffff) == 0 \ | |
3183 | ? 15 \ | |
3184 | : 14 \ | |
3185 | : ((v) & ~0x7ffff) == 0 \ | |
3186 | ? 13 \ | |
3187 | : 12 \ | |
3188 | : ((v) & ~0x3fffff) == 0 \ | |
3189 | ? ((v) & ~0x1fffff) == 0 \ | |
3190 | ? 11 \ | |
3191 | : 10 \ | |
3192 | : ((v) & ~0x7fffff) == 0 \ | |
3193 | ? 9 \ | |
3194 | : 8 \ | |
3195 | : ((v) & ~0xfffffff) == 0 \ | |
3196 | ? ((v) & ~0x3ffffff) == 0 \ | |
3197 | ? ((v) & ~0x1ffffff) == 0 \ | |
3198 | ? 7 \ | |
3199 | : 6 \ | |
3200 | : ((v) & ~0x7ffffff) == 0 \ | |
3201 | ? 5 \ | |
3202 | : 4 \ | |
3203 | : ((v) & ~0x3fffffff) == 0 \ | |
3204 | ? ((v) & ~0x1fffffff) == 0 \ | |
3205 | ? 3 \ | |
3206 | : 2 \ | |
3207 | : ((v) & ~0x7fffffff) == 0 \ | |
3208 | ? 1 \ | |
3209 | : 0) | |
3210 | ||
6373ee54 CD |
3211 | /* Is the given value a sign-extended 32-bit value? */ |
3212 | #define IS_SEXT_32BIT_NUM(x) \ | |
3213 | (((x) &~ (offsetT) 0x7fffffff) == 0 \ | |
3214 | || (((x) &~ (offsetT) 0x7fffffff) == ~ (offsetT) 0x7fffffff)) | |
3215 | ||
252b5132 RH |
3216 | /* load_register() |
3217 | * This routine generates the least number of instructions neccessary to load | |
3218 | * an absolute expression value into a register. | |
3219 | */ | |
3220 | static void | |
3221 | load_register (counter, reg, ep, dbl) | |
3222 | int *counter; | |
3223 | int reg; | |
3224 | expressionS *ep; | |
3225 | int dbl; | |
3226 | { | |
3227 | int freg; | |
3228 | expressionS hi32, lo32; | |
3229 | ||
3230 | if (ep->X_op != O_big) | |
3231 | { | |
3232 | assert (ep->X_op == O_constant); | |
3233 | if (ep->X_add_number < 0x8000 | |
3234 | && (ep->X_add_number >= 0 | |
3235 | || (ep->X_add_number >= -0x8000 | |
3236 | && (! dbl | |
3237 | || ! ep->X_unsigned | |
3238 | || sizeof (ep->X_add_number) > 4)))) | |
3239 | { | |
3240 | /* We can handle 16 bit signed values with an addiu to | |
3241 | $zero. No need to ever use daddiu here, since $zero and | |
3242 | the result are always correct in 32 bit mode. */ | |
3243 | macro_build ((char *) NULL, counter, ep, "addiu", "t,r,j", reg, 0, | |
3244 | (int) BFD_RELOC_LO16); | |
3245 | return; | |
3246 | } | |
3247 | else if (ep->X_add_number >= 0 && ep->X_add_number < 0x10000) | |
3248 | { | |
3249 | /* We can handle 16 bit unsigned values with an ori to | |
3250 | $zero. */ | |
3251 | macro_build ((char *) NULL, counter, ep, "ori", "t,r,i", reg, 0, | |
3252 | (int) BFD_RELOC_LO16); | |
3253 | return; | |
3254 | } | |
6373ee54 | 3255 | else if ((IS_SEXT_32BIT_NUM (ep->X_add_number) |
252b5132 RH |
3256 | && (! dbl |
3257 | || ! ep->X_unsigned | |
3258 | || sizeof (ep->X_add_number) > 4 | |
3259 | || (ep->X_add_number & 0x80000000) == 0)) | |
ca4e0257 | 3260 | || ((HAVE_32BIT_GPRS || ! dbl) |
252b5132 | 3261 | && (ep->X_add_number &~ (offsetT) 0xffffffff) == 0) |
ca4e0257 | 3262 | || (HAVE_32BIT_GPRS |
252b5132 RH |
3263 | && ! dbl |
3264 | && ((ep->X_add_number &~ (offsetT) 0xffffffff) | |
3265 | == ~ (offsetT) 0xffffffff))) | |
3266 | { | |
3267 | /* 32 bit values require an lui. */ | |
3268 | macro_build ((char *) NULL, counter, ep, "lui", "t,u", reg, | |
3269 | (int) BFD_RELOC_HI16); | |
3270 | if ((ep->X_add_number & 0xffff) != 0) | |
3271 | macro_build ((char *) NULL, counter, ep, "ori", "t,r,i", reg, reg, | |
3272 | (int) BFD_RELOC_LO16); | |
3273 | return; | |
3274 | } | |
3275 | } | |
3276 | ||
3277 | /* The value is larger than 32 bits. */ | |
3278 | ||
ca4e0257 | 3279 | if (HAVE_32BIT_GPRS) |
252b5132 | 3280 | { |
956cd1d6 TS |
3281 | as_bad (_("Number (0x%lx) larger than 32 bits"), |
3282 | (unsigned long) ep->X_add_number); | |
252b5132 RH |
3283 | macro_build ((char *) NULL, counter, ep, "addiu", "t,r,j", reg, 0, |
3284 | (int) BFD_RELOC_LO16); | |
3285 | return; | |
3286 | } | |
3287 | ||
3288 | if (ep->X_op != O_big) | |
3289 | { | |
3290 | hi32 = *ep; | |
3291 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
3292 | hi32.X_add_number = (valueT) hi32.X_add_number >> 16; | |
3293 | hi32.X_add_number &= 0xffffffff; | |
3294 | lo32 = *ep; | |
3295 | lo32.X_add_number &= 0xffffffff; | |
3296 | } | |
3297 | else | |
3298 | { | |
3299 | assert (ep->X_add_number > 2); | |
3300 | if (ep->X_add_number == 3) | |
3301 | generic_bignum[3] = 0; | |
3302 | else if (ep->X_add_number > 4) | |
3303 | as_bad (_("Number larger than 64 bits")); | |
3304 | lo32.X_op = O_constant; | |
3305 | lo32.X_add_number = generic_bignum[0] + (generic_bignum[1] << 16); | |
3306 | hi32.X_op = O_constant; | |
3307 | hi32.X_add_number = generic_bignum[2] + (generic_bignum[3] << 16); | |
3308 | } | |
3309 | ||
3310 | if (hi32.X_add_number == 0) | |
3311 | freg = 0; | |
3312 | else | |
3313 | { | |
3314 | int shift, bit; | |
3315 | unsigned long hi, lo; | |
3316 | ||
956cd1d6 | 3317 | if (hi32.X_add_number == (offsetT) 0xffffffff) |
beae10d5 KH |
3318 | { |
3319 | if ((lo32.X_add_number & 0xffff8000) == 0xffff8000) | |
3320 | { | |
3321 | macro_build ((char *) NULL, counter, &lo32, "addiu", "t,r,j", | |
252b5132 | 3322 | reg, 0, (int) BFD_RELOC_LO16); |
beae10d5 KH |
3323 | return; |
3324 | } | |
3325 | if (lo32.X_add_number & 0x80000000) | |
3326 | { | |
3327 | macro_build ((char *) NULL, counter, &lo32, "lui", "t,u", reg, | |
3328 | (int) BFD_RELOC_HI16); | |
252b5132 RH |
3329 | if (lo32.X_add_number & 0xffff) |
3330 | macro_build ((char *) NULL, counter, &lo32, "ori", "t,r,i", | |
3331 | reg, reg, (int) BFD_RELOC_LO16); | |
beae10d5 KH |
3332 | return; |
3333 | } | |
3334 | } | |
252b5132 RH |
3335 | |
3336 | /* Check for 16bit shifted constant. We know that hi32 is | |
3337 | non-zero, so start the mask on the first bit of the hi32 | |
3338 | value. */ | |
3339 | shift = 17; | |
3340 | do | |
beae10d5 KH |
3341 | { |
3342 | unsigned long himask, lomask; | |
3343 | ||
3344 | if (shift < 32) | |
3345 | { | |
3346 | himask = 0xffff >> (32 - shift); | |
3347 | lomask = (0xffff << shift) & 0xffffffff; | |
3348 | } | |
3349 | else | |
3350 | { | |
3351 | himask = 0xffff << (shift - 32); | |
3352 | lomask = 0; | |
3353 | } | |
3354 | if ((hi32.X_add_number & ~(offsetT) himask) == 0 | |
3355 | && (lo32.X_add_number & ~(offsetT) lomask) == 0) | |
3356 | { | |
3357 | expressionS tmp; | |
3358 | ||
3359 | tmp.X_op = O_constant; | |
3360 | if (shift < 32) | |
3361 | tmp.X_add_number = ((hi32.X_add_number << (32 - shift)) | |
3362 | | (lo32.X_add_number >> shift)); | |
3363 | else | |
3364 | tmp.X_add_number = hi32.X_add_number >> (shift - 32); | |
3365 | macro_build ((char *) NULL, counter, &tmp, | |
3366 | "ori", "t,r,i", reg, 0, | |
3367 | (int) BFD_RELOC_LO16); | |
2396cfb9 | 3368 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
beae10d5 KH |
3369 | (shift >= 32) ? "dsll32" : "dsll", |
3370 | "d,w,<", reg, reg, | |
3371 | (shift >= 32) ? shift - 32 : shift); | |
3372 | return; | |
3373 | } | |
f9419b05 | 3374 | ++shift; |
beae10d5 KH |
3375 | } |
3376 | while (shift <= (64 - 16)); | |
252b5132 RH |
3377 | |
3378 | /* Find the bit number of the lowest one bit, and store the | |
3379 | shifted value in hi/lo. */ | |
3380 | hi = (unsigned long) (hi32.X_add_number & 0xffffffff); | |
3381 | lo = (unsigned long) (lo32.X_add_number & 0xffffffff); | |
3382 | if (lo != 0) | |
3383 | { | |
3384 | bit = 0; | |
3385 | while ((lo & 1) == 0) | |
3386 | { | |
3387 | lo >>= 1; | |
3388 | ++bit; | |
3389 | } | |
3390 | lo |= (hi & (((unsigned long) 1 << bit) - 1)) << (32 - bit); | |
3391 | hi >>= bit; | |
3392 | } | |
3393 | else | |
3394 | { | |
3395 | bit = 32; | |
3396 | while ((hi & 1) == 0) | |
3397 | { | |
3398 | hi >>= 1; | |
3399 | ++bit; | |
3400 | } | |
3401 | lo = hi; | |
3402 | hi = 0; | |
3403 | } | |
3404 | ||
3405 | /* Optimize if the shifted value is a (power of 2) - 1. */ | |
3406 | if ((hi == 0 && ((lo + 1) & lo) == 0) | |
3407 | || (lo == 0xffffffff && ((hi + 1) & hi) == 0)) | |
beae10d5 KH |
3408 | { |
3409 | shift = COUNT_TOP_ZEROES ((unsigned int) hi32.X_add_number); | |
252b5132 | 3410 | if (shift != 0) |
beae10d5 | 3411 | { |
252b5132 RH |
3412 | expressionS tmp; |
3413 | ||
3414 | /* This instruction will set the register to be all | |
3415 | ones. */ | |
beae10d5 KH |
3416 | tmp.X_op = O_constant; |
3417 | tmp.X_add_number = (offsetT) -1; | |
3418 | macro_build ((char *) NULL, counter, &tmp, "addiu", "t,r,j", | |
252b5132 | 3419 | reg, 0, (int) BFD_RELOC_LO16); |
beae10d5 KH |
3420 | if (bit != 0) |
3421 | { | |
3422 | bit += shift; | |
2396cfb9 | 3423 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
beae10d5 KH |
3424 | (bit >= 32) ? "dsll32" : "dsll", |
3425 | "d,w,<", reg, reg, | |
3426 | (bit >= 32) ? bit - 32 : bit); | |
3427 | } | |
2396cfb9 | 3428 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
252b5132 | 3429 | (shift >= 32) ? "dsrl32" : "dsrl", |
beae10d5 | 3430 | "d,w,<", reg, reg, |
252b5132 | 3431 | (shift >= 32) ? shift - 32 : shift); |
beae10d5 KH |
3432 | return; |
3433 | } | |
3434 | } | |
252b5132 RH |
3435 | |
3436 | /* Sign extend hi32 before calling load_register, because we can | |
3437 | generally get better code when we load a sign extended value. */ | |
3438 | if ((hi32.X_add_number & 0x80000000) != 0) | |
beae10d5 | 3439 | hi32.X_add_number |= ~(offsetT) 0xffffffff; |
252b5132 RH |
3440 | load_register (counter, reg, &hi32, 0); |
3441 | freg = reg; | |
3442 | } | |
3443 | if ((lo32.X_add_number & 0xffff0000) == 0) | |
3444 | { | |
3445 | if (freg != 0) | |
3446 | { | |
2396cfb9 TS |
3447 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
3448 | "dsll32", "d,w,<", reg, freg, 0); | |
252b5132 RH |
3449 | freg = reg; |
3450 | } | |
3451 | } | |
3452 | else | |
3453 | { | |
3454 | expressionS mid16; | |
3455 | ||
956cd1d6 | 3456 | if ((freg == 0) && (lo32.X_add_number == (offsetT) 0xffffffff)) |
beae10d5 | 3457 | { |
252b5132 RH |
3458 | macro_build ((char *) NULL, counter, &lo32, "lui", "t,u", reg, |
3459 | (int) BFD_RELOC_HI16); | |
956cd1d6 TS |
3460 | macro_build ((char *) NULL, counter, (expressionS *) NULL, |
3461 | "dsrl32", "d,w,<", reg, reg, 0); | |
beae10d5 KH |
3462 | return; |
3463 | } | |
252b5132 RH |
3464 | |
3465 | if (freg != 0) | |
3466 | { | |
956cd1d6 TS |
3467 | macro_build ((char *) NULL, counter, (expressionS *) NULL, "dsll", |
3468 | "d,w,<", reg, freg, 16); | |
252b5132 RH |
3469 | freg = reg; |
3470 | } | |
3471 | mid16 = lo32; | |
3472 | mid16.X_add_number >>= 16; | |
3473 | macro_build ((char *) NULL, counter, &mid16, "ori", "t,r,i", reg, | |
3474 | freg, (int) BFD_RELOC_LO16); | |
956cd1d6 TS |
3475 | macro_build ((char *) NULL, counter, (expressionS *) NULL, "dsll", |
3476 | "d,w,<", reg, reg, 16); | |
252b5132 RH |
3477 | freg = reg; |
3478 | } | |
3479 | if ((lo32.X_add_number & 0xffff) != 0) | |
3480 | macro_build ((char *) NULL, counter, &lo32, "ori", "t,r,i", reg, freg, | |
3481 | (int) BFD_RELOC_LO16); | |
3482 | } | |
3483 | ||
3484 | /* Load an address into a register. */ | |
3485 | ||
3486 | static void | |
c9914766 | 3487 | load_address (counter, reg, ep, used_at) |
252b5132 RH |
3488 | int *counter; |
3489 | int reg; | |
3490 | expressionS *ep; | |
d6bc6245 | 3491 | int *used_at; |
252b5132 | 3492 | { |
f9419b05 | 3493 | char *p = NULL; |
252b5132 RH |
3494 | |
3495 | if (ep->X_op != O_constant | |
3496 | && ep->X_op != O_symbol) | |
3497 | { | |
3498 | as_bad (_("expression too complex")); | |
3499 | ep->X_op = O_constant; | |
3500 | } | |
3501 | ||
3502 | if (ep->X_op == O_constant) | |
3503 | { | |
c9914766 | 3504 | load_register (counter, reg, ep, HAVE_64BIT_ADDRESSES); |
252b5132 RH |
3505 | return; |
3506 | } | |
3507 | ||
3508 | if (mips_pic == NO_PIC) | |
3509 | { | |
3510 | /* If this is a reference to a GP relative symbol, we want | |
cdf6fd85 | 3511 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
3512 | Otherwise we want |
3513 | lui $reg,<sym> (BFD_RELOC_HI16_S) | |
3514 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
d6bc6245 | 3515 | If we have an addend, we always use the latter form. |
76b3015f | 3516 | |
d6bc6245 TS |
3517 | With 64bit address space and a usable $at we want |
3518 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
3519 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
3520 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
3521 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
3522 | dsll32 $reg,0 | |
3a482fd5 | 3523 | daddu $reg,$reg,$at |
76b3015f | 3524 | |
d6bc6245 TS |
3525 | If $at is already in use, we use an path which is suboptimal |
3526 | on superscalar processors. | |
3527 | lui $reg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
3528 | daddiu $reg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
3529 | dsll $reg,16 | |
3530 | daddiu $reg,<sym> (BFD_RELOC_HI16_S) | |
3531 | dsll $reg,16 | |
3532 | daddiu $reg,<sym> (BFD_RELOC_LO16) | |
3533 | */ | |
c9914766 | 3534 | if (HAVE_64BIT_ADDRESSES) |
d6bc6245 | 3535 | { |
d6bc6245 TS |
3536 | /* We don't do GP optimization for now because RELAX_ENCODE can't |
3537 | hold the data for such large chunks. */ | |
3538 | ||
460597ba | 3539 | if (*used_at == 0 && ! mips_opts.noat) |
d6bc6245 TS |
3540 | { |
3541 | macro_build (p, counter, ep, "lui", "t,u", | |
3542 | reg, (int) BFD_RELOC_MIPS_HIGHEST); | |
3543 | macro_build (p, counter, ep, "lui", "t,u", | |
3544 | AT, (int) BFD_RELOC_HI16_S); | |
3545 | macro_build (p, counter, ep, "daddiu", "t,r,j", | |
3546 | reg, reg, (int) BFD_RELOC_MIPS_HIGHER); | |
3547 | macro_build (p, counter, ep, "daddiu", "t,r,j", | |
3548 | AT, AT, (int) BFD_RELOC_LO16); | |
2396cfb9 TS |
3549 | macro_build (p, counter, (expressionS *) NULL, "dsll32", |
3550 | "d,w,<", reg, reg, 0); | |
3a482fd5 | 3551 | macro_build (p, counter, (expressionS *) NULL, "daddu", |
2396cfb9 | 3552 | "d,v,t", reg, reg, AT); |
d6bc6245 TS |
3553 | *used_at = 1; |
3554 | } | |
3555 | else | |
3556 | { | |
3557 | macro_build (p, counter, ep, "lui", "t,u", | |
3558 | reg, (int) BFD_RELOC_MIPS_HIGHEST); | |
3559 | macro_build (p, counter, ep, "daddiu", "t,r,j", | |
3560 | reg, reg, (int) BFD_RELOC_MIPS_HIGHER); | |
2396cfb9 TS |
3561 | macro_build (p, counter, (expressionS *) NULL, "dsll", |
3562 | "d,w,<", reg, reg, 16); | |
d6bc6245 TS |
3563 | macro_build (p, counter, ep, "daddiu", "t,r,j", |
3564 | reg, reg, (int) BFD_RELOC_HI16_S); | |
2396cfb9 TS |
3565 | macro_build (p, counter, (expressionS *) NULL, "dsll", |
3566 | "d,w,<", reg, reg, 16); | |
d6bc6245 TS |
3567 | macro_build (p, counter, ep, "daddiu", "t,r,j", |
3568 | reg, reg, (int) BFD_RELOC_LO16); | |
3569 | } | |
3570 | } | |
252b5132 RH |
3571 | else |
3572 | { | |
d6bc6245 TS |
3573 | if ((valueT) ep->X_add_number <= MAX_GPREL_OFFSET |
3574 | && ! nopic_need_relax (ep->X_add_symbol, 1)) | |
3575 | { | |
3576 | frag_grow (20); | |
3577 | macro_build ((char *) NULL, counter, ep, | |
c9914766 TS |
3578 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", "t,r,j", |
3579 | reg, mips_gp_register, (int) BFD_RELOC_GPREL16); | |
d6bc6245 TS |
3580 | p = frag_var (rs_machine_dependent, 8, 0, |
3581 | RELAX_ENCODE (4, 8, 0, 4, 0, | |
3582 | mips_opts.warn_about_macros), | |
956cd1d6 | 3583 | ep->X_add_symbol, 0, NULL); |
d6bc6245 TS |
3584 | } |
3585 | macro_build_lui (p, counter, ep, reg); | |
3586 | if (p != NULL) | |
3587 | p += 4; | |
c9914766 TS |
3588 | macro_build (p, counter, ep, |
3589 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", | |
d6bc6245 TS |
3590 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); |
3591 | } | |
252b5132 RH |
3592 | } |
3593 | else if (mips_pic == SVR4_PIC && ! mips_big_got) | |
3594 | { | |
3595 | expressionS ex; | |
3596 | ||
3597 | /* If this is a reference to an external symbol, we want | |
3598 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
3599 | Otherwise we want | |
3600 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
3601 | nop | |
3602 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
3603 | If there is a constant, it must be added in after. */ | |
3604 | ex.X_add_number = ep->X_add_number; | |
3605 | ep->X_add_number = 0; | |
3606 | frag_grow (20); | |
3607 | macro_build ((char *) NULL, counter, ep, | |
c9914766 TS |
3608 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", |
3609 | reg, (int) BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 RH |
3610 | macro_build ((char *) NULL, counter, (expressionS *) NULL, "nop", ""); |
3611 | p = frag_var (rs_machine_dependent, 4, 0, | |
3612 | RELAX_ENCODE (0, 4, -8, 0, 0, mips_opts.warn_about_macros), | |
3613 | ep->X_add_symbol, (offsetT) 0, (char *) NULL); | |
3614 | macro_build (p, counter, ep, | |
ca4e0257 | 3615 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
3616 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); |
3617 | if (ex.X_add_number != 0) | |
3618 | { | |
3619 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
3620 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
3621 | ex.X_op = O_constant; | |
3622 | macro_build ((char *) NULL, counter, &ex, | |
ca4e0257 | 3623 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
3624 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); |
3625 | } | |
3626 | } | |
3627 | else if (mips_pic == SVR4_PIC) | |
3628 | { | |
3629 | expressionS ex; | |
3630 | int off; | |
3631 | ||
3632 | /* This is the large GOT case. If this is a reference to an | |
3633 | external symbol, we want | |
3634 | lui $reg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
3635 | addu $reg,$reg,$gp | |
3636 | lw $reg,<sym>($reg) (BFD_RELOC_MIPS_GOT_LO16) | |
3637 | Otherwise, for a reference to a local symbol, we want | |
3638 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
3639 | nop | |
3640 | addiu $reg,$reg,<sym> (BFD_RELOC_LO16) | |
438c16b8 TS |
3641 | If we have NewABI, we want |
3642 | lw $reg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
3643 | addiu $reg,$reg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
252b5132 RH |
3644 | If there is a constant, it must be added in after. */ |
3645 | ex.X_add_number = ep->X_add_number; | |
3646 | ep->X_add_number = 0; | |
438c16b8 TS |
3647 | if (HAVE_NEWABI) |
3648 | { | |
3649 | macro_build ((char *) NULL, counter, ep, | |
3650 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", reg, | |
3651 | (int) BFD_RELOC_MIPS_GOT_PAGE, mips_gp_register); | |
3652 | macro_build (p, counter, ep, | |
3653 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", "t,r,j", | |
3654 | reg, reg, (int) BFD_RELOC_MIPS_GOT_OFST); | |
3655 | } | |
252b5132 | 3656 | else |
438c16b8 TS |
3657 | { |
3658 | if (reg_needs_delay (mips_gp_register)) | |
3659 | off = 4; | |
3660 | else | |
3661 | off = 0; | |
3662 | frag_grow (32); | |
3663 | macro_build ((char *) NULL, counter, ep, "lui", "t,u", reg, | |
3664 | (int) BFD_RELOC_MIPS_GOT_HI16); | |
3665 | macro_build ((char *) NULL, counter, (expressionS *) NULL, | |
3666 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", "d,v,t", reg, | |
3667 | reg, mips_gp_register); | |
3668 | macro_build ((char *) NULL, counter, ep, | |
3669 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
3670 | "t,o(b)", reg, (int) BFD_RELOC_MIPS_GOT_LO16, reg); | |
3671 | p = frag_var (rs_machine_dependent, 12 + off, 0, | |
3672 | RELAX_ENCODE (12, 12 + off, off, 8 + off, 0, | |
3673 | mips_opts.warn_about_macros), | |
3674 | ep->X_add_symbol, 0, NULL); | |
3675 | if (off > 0) | |
3676 | { | |
3677 | /* We need a nop before loading from $gp. This special | |
3678 | check is required because the lui which starts the main | |
3679 | instruction stream does not refer to $gp, and so will not | |
3680 | insert the nop which may be required. */ | |
3681 | macro_build (p, counter, (expressionS *) NULL, "nop", ""); | |
3682 | p += 4; | |
3683 | } | |
3684 | macro_build (p, counter, ep, | |
3685 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", reg, | |
3686 | (int) BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
3687 | p += 4; | |
252b5132 RH |
3688 | macro_build (p, counter, (expressionS *) NULL, "nop", ""); |
3689 | p += 4; | |
438c16b8 TS |
3690 | macro_build (p, counter, ep, |
3691 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", | |
3692 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); | |
252b5132 | 3693 | } |
438c16b8 | 3694 | |
252b5132 RH |
3695 | if (ex.X_add_number != 0) |
3696 | { | |
3697 | if (ex.X_add_number < -0x8000 || ex.X_add_number >= 0x8000) | |
3698 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
3699 | ex.X_op = O_constant; | |
f7ea7ef2 TS |
3700 | macro_build ((char *) NULL, counter, &ex, |
3701 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", | |
252b5132 RH |
3702 | "t,r,j", reg, reg, (int) BFD_RELOC_LO16); |
3703 | } | |
3704 | } | |
3705 | else if (mips_pic == EMBEDDED_PIC) | |
3706 | { | |
3707 | /* We always do | |
cdf6fd85 | 3708 | addiu $reg,$gp,<sym> (BFD_RELOC_GPREL16) |
c9914766 TS |
3709 | */ |
3710 | macro_build ((char *) NULL, counter, ep, | |
3711 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", | |
3712 | "t,r,j", reg, mips_gp_register, (int) BFD_RELOC_GPREL16); | |
252b5132 RH |
3713 | } |
3714 | else | |
3715 | abort (); | |
3716 | } | |
3717 | ||
ea1fb5dc RS |
3718 | /* Move the contents of register SOURCE into register DEST. */ |
3719 | ||
3720 | static void | |
3721 | move_register (counter, dest, source) | |
3722 | int *counter; | |
3723 | int dest; | |
3724 | int source; | |
3725 | { | |
3726 | macro_build ((char *) NULL, counter, (expressionS *) NULL, | |
3727 | HAVE_32BIT_GPRS ? "addu" : "daddu", | |
3728 | "d,v,t", dest, source, 0); | |
3729 | } | |
3730 | ||
252b5132 RH |
3731 | /* |
3732 | * Build macros | |
3733 | * This routine implements the seemingly endless macro or synthesized | |
3734 | * instructions and addressing modes in the mips assembly language. Many | |
3735 | * of these macros are simple and are similar to each other. These could | |
3736 | * probably be handled by some kind of table or grammer aproach instead of | |
3737 | * this verbose method. Others are not simple macros but are more like | |
3738 | * optimizing code generation. | |
3739 | * One interesting optimization is when several store macros appear | |
3740 | * consecutivly that would load AT with the upper half of the same address. | |
3741 | * The ensuing load upper instructions are ommited. This implies some kind | |
3742 | * of global optimization. We currently only optimize within a single macro. | |
3743 | * For many of the load and store macros if the address is specified as a | |
3744 | * constant expression in the first 64k of memory (ie ld $2,0x4000c) we | |
3745 | * first load register 'at' with zero and use it as the base register. The | |
3746 | * mips assembler simply uses register $zero. Just one tiny optimization | |
3747 | * we're missing. | |
3748 | */ | |
3749 | static void | |
3750 | macro (ip) | |
3751 | struct mips_cl_insn *ip; | |
3752 | { | |
3753 | register int treg, sreg, dreg, breg; | |
3754 | int tempreg; | |
3755 | int mask; | |
3756 | int icnt = 0; | |
43841e91 | 3757 | int used_at = 0; |
252b5132 RH |
3758 | expressionS expr1; |
3759 | const char *s; | |
3760 | const char *s2; | |
3761 | const char *fmt; | |
3762 | int likely = 0; | |
3763 | int dbl = 0; | |
3764 | int coproc = 0; | |
3765 | int lr = 0; | |
3766 | int imm = 0; | |
3767 | offsetT maxnum; | |
3768 | int off; | |
3769 | bfd_reloc_code_real_type r; | |
252b5132 RH |
3770 | int hold_mips_optimize; |
3771 | ||
3772 | assert (! mips_opts.mips16); | |
3773 | ||
3774 | treg = (ip->insn_opcode >> 16) & 0x1f; | |
3775 | dreg = (ip->insn_opcode >> 11) & 0x1f; | |
3776 | sreg = breg = (ip->insn_opcode >> 21) & 0x1f; | |
3777 | mask = ip->insn_mo->mask; | |
3778 | ||
3779 | expr1.X_op = O_constant; | |
3780 | expr1.X_op_symbol = NULL; | |
3781 | expr1.X_add_symbol = NULL; | |
3782 | expr1.X_add_number = 1; | |
3783 | ||
3784 | switch (mask) | |
3785 | { | |
3786 | case M_DABS: | |
3787 | dbl = 1; | |
3788 | case M_ABS: | |
3789 | /* bgez $a0,.+12 | |
3790 | move v0,$a0 | |
3791 | sub v0,$zero,$a0 | |
3792 | */ | |
3793 | ||
3794 | mips_emit_delays (true); | |
3795 | ++mips_opts.noreorder; | |
3796 | mips_any_noreorder = 1; | |
3797 | ||
3798 | expr1.X_add_number = 8; | |
3799 | macro_build ((char *) NULL, &icnt, &expr1, "bgez", "s,p", sreg); | |
3800 | if (dreg == sreg) | |
2396cfb9 TS |
3801 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", "", |
3802 | 0); | |
252b5132 | 3803 | else |
ea1fb5dc | 3804 | move_register (&icnt, dreg, sreg); |
2396cfb9 | 3805 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 3806 | dbl ? "dsub" : "sub", "d,v,t", dreg, 0, sreg); |
252b5132 RH |
3807 | |
3808 | --mips_opts.noreorder; | |
3809 | return; | |
3810 | ||
3811 | case M_ADD_I: | |
3812 | s = "addi"; | |
3813 | s2 = "add"; | |
3814 | goto do_addi; | |
3815 | case M_ADDU_I: | |
3816 | s = "addiu"; | |
3817 | s2 = "addu"; | |
3818 | goto do_addi; | |
3819 | case M_DADD_I: | |
3820 | dbl = 1; | |
3821 | s = "daddi"; | |
3822 | s2 = "dadd"; | |
3823 | goto do_addi; | |
3824 | case M_DADDU_I: | |
3825 | dbl = 1; | |
3826 | s = "daddiu"; | |
3827 | s2 = "daddu"; | |
3828 | do_addi: | |
3829 | if (imm_expr.X_op == O_constant | |
3830 | && imm_expr.X_add_number >= -0x8000 | |
3831 | && imm_expr.X_add_number < 0x8000) | |
3832 | { | |
3833 | macro_build ((char *) NULL, &icnt, &imm_expr, s, "t,r,j", treg, sreg, | |
3834 | (int) BFD_RELOC_LO16); | |
3835 | return; | |
3836 | } | |
3837 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 TS |
3838 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s2, "d,v,t", |
3839 | treg, sreg, AT); | |
252b5132 RH |
3840 | break; |
3841 | ||
3842 | case M_AND_I: | |
3843 | s = "andi"; | |
3844 | s2 = "and"; | |
3845 | goto do_bit; | |
3846 | case M_OR_I: | |
3847 | s = "ori"; | |
3848 | s2 = "or"; | |
3849 | goto do_bit; | |
3850 | case M_NOR_I: | |
3851 | s = ""; | |
3852 | s2 = "nor"; | |
3853 | goto do_bit; | |
3854 | case M_XOR_I: | |
3855 | s = "xori"; | |
3856 | s2 = "xor"; | |
3857 | do_bit: | |
3858 | if (imm_expr.X_op == O_constant | |
3859 | && imm_expr.X_add_number >= 0 | |
3860 | && imm_expr.X_add_number < 0x10000) | |
3861 | { | |
3862 | if (mask != M_NOR_I) | |
3863 | macro_build ((char *) NULL, &icnt, &imm_expr, s, "t,r,i", treg, | |
3864 | sreg, (int) BFD_RELOC_LO16); | |
3865 | else | |
3866 | { | |
3867 | macro_build ((char *) NULL, &icnt, &imm_expr, "ori", "t,r,i", | |
3868 | treg, sreg, (int) BFD_RELOC_LO16); | |
2396cfb9 TS |
3869 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nor", |
3870 | "d,v,t", treg, treg, 0); | |
252b5132 RH |
3871 | } |
3872 | return; | |
3873 | } | |
3874 | ||
d6bc6245 | 3875 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
3876 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s2, "d,v,t", |
3877 | treg, sreg, AT); | |
252b5132 RH |
3878 | break; |
3879 | ||
3880 | case M_BEQ_I: | |
3881 | s = "beq"; | |
3882 | goto beq_i; | |
3883 | case M_BEQL_I: | |
3884 | s = "beql"; | |
3885 | likely = 1; | |
3886 | goto beq_i; | |
3887 | case M_BNE_I: | |
3888 | s = "bne"; | |
3889 | goto beq_i; | |
3890 | case M_BNEL_I: | |
3891 | s = "bnel"; | |
3892 | likely = 1; | |
3893 | beq_i: | |
3894 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
3895 | { | |
3896 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "s,t,p", sreg, | |
3897 | 0); | |
3898 | return; | |
3899 | } | |
4d34fb5f | 3900 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
252b5132 RH |
3901 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "s,t,p", sreg, AT); |
3902 | break; | |
3903 | ||
3904 | case M_BGEL: | |
3905 | likely = 1; | |
3906 | case M_BGE: | |
3907 | if (treg == 0) | |
3908 | { | |
3909 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
2396cfb9 | 3910 | likely ? "bgezl" : "bgez", "s,p", sreg); |
252b5132 RH |
3911 | return; |
3912 | } | |
3913 | if (sreg == 0) | |
3914 | { | |
3915 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
2396cfb9 | 3916 | likely ? "blezl" : "blez", "s,p", treg); |
252b5132 RH |
3917 | return; |
3918 | } | |
2396cfb9 TS |
3919 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "slt", "d,v,t", |
3920 | AT, sreg, treg); | |
252b5132 | 3921 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 3922 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
3923 | break; |
3924 | ||
3925 | case M_BGTL_I: | |
3926 | likely = 1; | |
3927 | case M_BGT_I: | |
3928 | /* check for > max integer */ | |
3929 | maxnum = 0x7fffffff; | |
ca4e0257 | 3930 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
3931 | { |
3932 | maxnum <<= 16; | |
3933 | maxnum |= 0xffff; | |
3934 | maxnum <<= 16; | |
3935 | maxnum |= 0xffff; | |
3936 | } | |
3937 | if (imm_expr.X_op == O_constant | |
3938 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 3939 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
3940 | { |
3941 | do_false: | |
3942 | /* result is always false */ | |
3943 | if (! likely) | |
3944 | { | |
39c0a331 L |
3945 | if (warn_nops) |
3946 | as_warn (_("Branch %s is always false (nop)"), | |
3947 | ip->insn_mo->name); | |
2396cfb9 TS |
3948 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", |
3949 | "", 0); | |
252b5132 RH |
3950 | } |
3951 | else | |
3952 | { | |
39c0a331 L |
3953 | if (warn_nops) |
3954 | as_warn (_("Branch likely %s is always false"), | |
3955 | ip->insn_mo->name); | |
252b5132 RH |
3956 | macro_build ((char *) NULL, &icnt, &offset_expr, "bnel", |
3957 | "s,t,p", 0, 0); | |
3958 | } | |
3959 | return; | |
3960 | } | |
3961 | if (imm_expr.X_op != O_constant) | |
3962 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 3963 | ++imm_expr.X_add_number; |
252b5132 RH |
3964 | /* FALLTHROUGH */ |
3965 | case M_BGE_I: | |
3966 | case M_BGEL_I: | |
3967 | if (mask == M_BGEL_I) | |
3968 | likely = 1; | |
3969 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
3970 | { | |
3971 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 3972 | likely ? "bgezl" : "bgez", "s,p", sreg); |
252b5132 RH |
3973 | return; |
3974 | } | |
3975 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
3976 | { | |
3977 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 3978 | likely ? "bgtzl" : "bgtz", "s,p", sreg); |
252b5132 RH |
3979 | return; |
3980 | } | |
3981 | maxnum = 0x7fffffff; | |
ca4e0257 | 3982 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
3983 | { |
3984 | maxnum <<= 16; | |
3985 | maxnum |= 0xffff; | |
3986 | maxnum <<= 16; | |
3987 | maxnum |= 0xffff; | |
3988 | } | |
3989 | maxnum = - maxnum - 1; | |
3990 | if (imm_expr.X_op == O_constant | |
3991 | && imm_expr.X_add_number <= maxnum | |
ca4e0257 | 3992 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
3993 | { |
3994 | do_true: | |
3995 | /* result is always true */ | |
3996 | as_warn (_("Branch %s is always true"), ip->insn_mo->name); | |
3997 | macro_build ((char *) NULL, &icnt, &offset_expr, "b", "p"); | |
3998 | return; | |
3999 | } | |
4000 | set_at (&icnt, sreg, 0); | |
4001 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4002 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
4003 | break; |
4004 | ||
4005 | case M_BGEUL: | |
4006 | likely = 1; | |
4007 | case M_BGEU: | |
4008 | if (treg == 0) | |
4009 | goto do_true; | |
4010 | if (sreg == 0) | |
4011 | { | |
4012 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4013 | likely ? "beql" : "beq", "s,t,p", 0, treg); |
252b5132 RH |
4014 | return; |
4015 | } | |
2396cfb9 TS |
4016 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
4017 | "d,v,t", AT, sreg, treg); | |
252b5132 | 4018 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4019 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
4020 | break; |
4021 | ||
4022 | case M_BGTUL_I: | |
4023 | likely = 1; | |
4024 | case M_BGTU_I: | |
4025 | if (sreg == 0 | |
ca4e0257 | 4026 | || (HAVE_32BIT_GPRS |
252b5132 | 4027 | && imm_expr.X_op == O_constant |
956cd1d6 | 4028 | && imm_expr.X_add_number == (offsetT) 0xffffffff)) |
252b5132 RH |
4029 | goto do_false; |
4030 | if (imm_expr.X_op != O_constant) | |
4031 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4032 | ++imm_expr.X_add_number; |
252b5132 RH |
4033 | /* FALLTHROUGH */ |
4034 | case M_BGEU_I: | |
4035 | case M_BGEUL_I: | |
4036 | if (mask == M_BGEUL_I) | |
4037 | likely = 1; | |
4038 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4039 | goto do_true; | |
4040 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4041 | { | |
4042 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4043 | likely ? "bnel" : "bne", "s,t,p", sreg, 0); |
252b5132 RH |
4044 | return; |
4045 | } | |
4046 | set_at (&icnt, sreg, 1); | |
4047 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4048 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
4049 | break; |
4050 | ||
4051 | case M_BGTL: | |
4052 | likely = 1; | |
4053 | case M_BGT: | |
4054 | if (treg == 0) | |
4055 | { | |
4056 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4057 | likely ? "bgtzl" : "bgtz", "s,p", sreg); |
252b5132 RH |
4058 | return; |
4059 | } | |
4060 | if (sreg == 0) | |
4061 | { | |
4062 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4063 | likely ? "bltzl" : "bltz", "s,p", treg); |
252b5132 RH |
4064 | return; |
4065 | } | |
2396cfb9 TS |
4066 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "slt", "d,v,t", |
4067 | AT, treg, sreg); | |
252b5132 | 4068 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4069 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4070 | break; |
4071 | ||
4072 | case M_BGTUL: | |
4073 | likely = 1; | |
4074 | case M_BGTU: | |
4075 | if (treg == 0) | |
4076 | { | |
4077 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4078 | likely ? "bnel" : "bne", "s,t,p", sreg, 0); |
252b5132 RH |
4079 | return; |
4080 | } | |
4081 | if (sreg == 0) | |
4082 | goto do_false; | |
2396cfb9 TS |
4083 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
4084 | "d,v,t", AT, treg, sreg); | |
252b5132 | 4085 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4086 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4087 | break; |
4088 | ||
4089 | case M_BLEL: | |
4090 | likely = 1; | |
4091 | case M_BLE: | |
4092 | if (treg == 0) | |
4093 | { | |
4094 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4095 | likely ? "blezl" : "blez", "s,p", sreg); |
252b5132 RH |
4096 | return; |
4097 | } | |
4098 | if (sreg == 0) | |
4099 | { | |
4100 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4101 | likely ? "bgezl" : "bgez", "s,p", treg); |
252b5132 RH |
4102 | return; |
4103 | } | |
2396cfb9 TS |
4104 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "slt", "d,v,t", |
4105 | AT, treg, sreg); | |
252b5132 | 4106 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4107 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
4108 | break; |
4109 | ||
4110 | case M_BLEL_I: | |
4111 | likely = 1; | |
4112 | case M_BLE_I: | |
4113 | maxnum = 0x7fffffff; | |
ca4e0257 | 4114 | if (HAVE_64BIT_GPRS && sizeof (maxnum) > 4) |
252b5132 RH |
4115 | { |
4116 | maxnum <<= 16; | |
4117 | maxnum |= 0xffff; | |
4118 | maxnum <<= 16; | |
4119 | maxnum |= 0xffff; | |
4120 | } | |
4121 | if (imm_expr.X_op == O_constant | |
4122 | && imm_expr.X_add_number >= maxnum | |
ca4e0257 | 4123 | && (HAVE_32BIT_GPRS || sizeof (maxnum) > 4)) |
252b5132 RH |
4124 | goto do_true; |
4125 | if (imm_expr.X_op != O_constant) | |
4126 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4127 | ++imm_expr.X_add_number; |
252b5132 RH |
4128 | /* FALLTHROUGH */ |
4129 | case M_BLT_I: | |
4130 | case M_BLTL_I: | |
4131 | if (mask == M_BLTL_I) | |
4132 | likely = 1; | |
4133 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4134 | { | |
4135 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4136 | likely ? "bltzl" : "bltz", "s,p", sreg); |
252b5132 RH |
4137 | return; |
4138 | } | |
4139 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4140 | { | |
4141 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4142 | likely ? "blezl" : "blez", "s,p", sreg); |
252b5132 RH |
4143 | return; |
4144 | } | |
4145 | set_at (&icnt, sreg, 0); | |
4146 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4147 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4148 | break; |
4149 | ||
4150 | case M_BLEUL: | |
4151 | likely = 1; | |
4152 | case M_BLEU: | |
4153 | if (treg == 0) | |
4154 | { | |
4155 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4156 | likely ? "beql" : "beq", "s,t,p", sreg, 0); |
252b5132 RH |
4157 | return; |
4158 | } | |
4159 | if (sreg == 0) | |
4160 | goto do_true; | |
2396cfb9 TS |
4161 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
4162 | "d,v,t", AT, treg, sreg); | |
252b5132 | 4163 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4164 | likely ? "beql" : "beq", "s,t,p", AT, 0); |
252b5132 RH |
4165 | break; |
4166 | ||
4167 | case M_BLEUL_I: | |
4168 | likely = 1; | |
4169 | case M_BLEU_I: | |
4170 | if (sreg == 0 | |
ca4e0257 | 4171 | || (HAVE_32BIT_GPRS |
252b5132 | 4172 | && imm_expr.X_op == O_constant |
956cd1d6 | 4173 | && imm_expr.X_add_number == (offsetT) 0xffffffff)) |
252b5132 RH |
4174 | goto do_true; |
4175 | if (imm_expr.X_op != O_constant) | |
4176 | as_bad (_("Unsupported large constant")); | |
f9419b05 | 4177 | ++imm_expr.X_add_number; |
252b5132 RH |
4178 | /* FALLTHROUGH */ |
4179 | case M_BLTU_I: | |
4180 | case M_BLTUL_I: | |
4181 | if (mask == M_BLTUL_I) | |
4182 | likely = 1; | |
4183 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4184 | goto do_false; | |
4185 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4186 | { | |
4187 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
4188 | likely ? "beql" : "beq", | |
4189 | "s,t,p", sreg, 0); | |
4190 | return; | |
4191 | } | |
4192 | set_at (&icnt, sreg, 1); | |
4193 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4194 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4195 | break; |
4196 | ||
4197 | case M_BLTL: | |
4198 | likely = 1; | |
4199 | case M_BLT: | |
4200 | if (treg == 0) | |
4201 | { | |
4202 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4203 | likely ? "bltzl" : "bltz", "s,p", sreg); |
252b5132 RH |
4204 | return; |
4205 | } | |
4206 | if (sreg == 0) | |
4207 | { | |
4208 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4209 | likely ? "bgtzl" : "bgtz", "s,p", treg); |
252b5132 RH |
4210 | return; |
4211 | } | |
2396cfb9 TS |
4212 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "slt", "d,v,t", |
4213 | AT, sreg, treg); | |
252b5132 | 4214 | macro_build ((char *) NULL, &icnt, &offset_expr, |
9a41af64 | 4215 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4216 | break; |
4217 | ||
4218 | case M_BLTUL: | |
4219 | likely = 1; | |
4220 | case M_BLTU: | |
4221 | if (treg == 0) | |
4222 | goto do_false; | |
4223 | if (sreg == 0) | |
4224 | { | |
4225 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4226 | likely ? "bnel" : "bne", "s,t,p", 0, treg); |
252b5132 RH |
4227 | return; |
4228 | } | |
2396cfb9 TS |
4229 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
4230 | "d,v,t", AT, sreg, | |
252b5132 RH |
4231 | treg); |
4232 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
9a41af64 | 4233 | likely ? "bnel" : "bne", "s,t,p", AT, 0); |
252b5132 RH |
4234 | break; |
4235 | ||
4236 | case M_DDIV_3: | |
4237 | dbl = 1; | |
4238 | case M_DIV_3: | |
4239 | s = "mflo"; | |
4240 | goto do_div3; | |
4241 | case M_DREM_3: | |
4242 | dbl = 1; | |
4243 | case M_REM_3: | |
4244 | s = "mfhi"; | |
4245 | do_div3: | |
4246 | if (treg == 0) | |
4247 | { | |
4248 | as_warn (_("Divide by zero.")); | |
4249 | if (mips_trap) | |
2396cfb9 | 4250 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "teq", |
9bd7d936 | 4251 | "s,t,q", 0, 0, 7); |
252b5132 | 4252 | else |
2396cfb9 TS |
4253 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
4254 | "c", 7); | |
252b5132 RH |
4255 | return; |
4256 | } | |
4257 | ||
4258 | mips_emit_delays (true); | |
4259 | ++mips_opts.noreorder; | |
4260 | mips_any_noreorder = 1; | |
4261 | if (mips_trap) | |
4262 | { | |
2396cfb9 | 4263 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "teq", |
9bd7d936 | 4264 | "s,t,q", treg, 0, 7); |
2396cfb9 | 4265 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 4266 | dbl ? "ddiv" : "div", "z,s,t", sreg, treg); |
252b5132 RH |
4267 | } |
4268 | else | |
4269 | { | |
4270 | expr1.X_add_number = 8; | |
4271 | macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", treg, 0); | |
2396cfb9 | 4272 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 4273 | dbl ? "ddiv" : "div", "z,s,t", sreg, treg); |
2396cfb9 TS |
4274 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
4275 | "c", 7); | |
252b5132 RH |
4276 | } |
4277 | expr1.X_add_number = -1; | |
4278 | macro_build ((char *) NULL, &icnt, &expr1, | |
4279 | dbl ? "daddiu" : "addiu", | |
4280 | "t,r,j", AT, 0, (int) BFD_RELOC_LO16); | |
4281 | expr1.X_add_number = mips_trap ? (dbl ? 12 : 8) : (dbl ? 20 : 16); | |
4282 | macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", treg, AT); | |
4283 | if (dbl) | |
4284 | { | |
4285 | expr1.X_add_number = 1; | |
4286 | macro_build ((char *) NULL, &icnt, &expr1, "daddiu", "t,r,j", AT, 0, | |
4287 | (int) BFD_RELOC_LO16); | |
2396cfb9 TS |
4288 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsll32", |
4289 | "d,w,<", AT, AT, 31); | |
252b5132 RH |
4290 | } |
4291 | else | |
4292 | { | |
4293 | expr1.X_add_number = 0x80000000; | |
4294 | macro_build ((char *) NULL, &icnt, &expr1, "lui", "t,u", AT, | |
4295 | (int) BFD_RELOC_HI16); | |
4296 | } | |
4297 | if (mips_trap) | |
4298 | { | |
2396cfb9 | 4299 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "teq", |
9bd7d936 | 4300 | "s,t,q", sreg, AT, 6); |
252b5132 RH |
4301 | /* We want to close the noreorder block as soon as possible, so |
4302 | that later insns are available for delay slot filling. */ | |
4303 | --mips_opts.noreorder; | |
4304 | } | |
4305 | else | |
4306 | { | |
4307 | expr1.X_add_number = 8; | |
4308 | macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", sreg, AT); | |
2396cfb9 TS |
4309 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", "", |
4310 | 0); | |
252b5132 RH |
4311 | |
4312 | /* We want to close the noreorder block as soon as possible, so | |
4313 | that later insns are available for delay slot filling. */ | |
4314 | --mips_opts.noreorder; | |
4315 | ||
2396cfb9 TS |
4316 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
4317 | "c", 6); | |
252b5132 | 4318 | } |
2396cfb9 | 4319 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d", dreg); |
252b5132 RH |
4320 | break; |
4321 | ||
4322 | case M_DIV_3I: | |
4323 | s = "div"; | |
4324 | s2 = "mflo"; | |
4325 | goto do_divi; | |
4326 | case M_DIVU_3I: | |
4327 | s = "divu"; | |
4328 | s2 = "mflo"; | |
4329 | goto do_divi; | |
4330 | case M_REM_3I: | |
4331 | s = "div"; | |
4332 | s2 = "mfhi"; | |
4333 | goto do_divi; | |
4334 | case M_REMU_3I: | |
4335 | s = "divu"; | |
4336 | s2 = "mfhi"; | |
4337 | goto do_divi; | |
4338 | case M_DDIV_3I: | |
4339 | dbl = 1; | |
4340 | s = "ddiv"; | |
4341 | s2 = "mflo"; | |
4342 | goto do_divi; | |
4343 | case M_DDIVU_3I: | |
4344 | dbl = 1; | |
4345 | s = "ddivu"; | |
4346 | s2 = "mflo"; | |
4347 | goto do_divi; | |
4348 | case M_DREM_3I: | |
4349 | dbl = 1; | |
4350 | s = "ddiv"; | |
4351 | s2 = "mfhi"; | |
4352 | goto do_divi; | |
4353 | case M_DREMU_3I: | |
4354 | dbl = 1; | |
4355 | s = "ddivu"; | |
4356 | s2 = "mfhi"; | |
4357 | do_divi: | |
4358 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
4359 | { | |
4360 | as_warn (_("Divide by zero.")); | |
4361 | if (mips_trap) | |
2396cfb9 | 4362 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "teq", |
9bd7d936 | 4363 | "s,t,q", 0, 0, 7); |
252b5132 | 4364 | else |
2396cfb9 TS |
4365 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
4366 | "c", 7); | |
252b5132 RH |
4367 | return; |
4368 | } | |
4369 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 1) | |
4370 | { | |
4371 | if (strcmp (s2, "mflo") == 0) | |
ea1fb5dc | 4372 | move_register (&icnt, dreg, sreg); |
252b5132 | 4373 | else |
ea1fb5dc | 4374 | move_register (&icnt, dreg, 0); |
252b5132 RH |
4375 | return; |
4376 | } | |
4377 | if (imm_expr.X_op == O_constant | |
4378 | && imm_expr.X_add_number == -1 | |
4379 | && s[strlen (s) - 1] != 'u') | |
4380 | { | |
4381 | if (strcmp (s2, "mflo") == 0) | |
4382 | { | |
2396cfb9 TS |
4383 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
4384 | dbl ? "dneg" : "neg", "d,w", dreg, sreg); | |
252b5132 RH |
4385 | } |
4386 | else | |
ea1fb5dc | 4387 | move_register (&icnt, dreg, 0); |
252b5132 RH |
4388 | return; |
4389 | } | |
4390 | ||
4391 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 TS |
4392 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "z,s,t", |
4393 | sreg, AT); | |
4394 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s2, "d", dreg); | |
252b5132 RH |
4395 | break; |
4396 | ||
4397 | case M_DIVU_3: | |
4398 | s = "divu"; | |
4399 | s2 = "mflo"; | |
4400 | goto do_divu3; | |
4401 | case M_REMU_3: | |
4402 | s = "divu"; | |
4403 | s2 = "mfhi"; | |
4404 | goto do_divu3; | |
4405 | case M_DDIVU_3: | |
4406 | s = "ddivu"; | |
4407 | s2 = "mflo"; | |
4408 | goto do_divu3; | |
4409 | case M_DREMU_3: | |
4410 | s = "ddivu"; | |
4411 | s2 = "mfhi"; | |
4412 | do_divu3: | |
4413 | mips_emit_delays (true); | |
4414 | ++mips_opts.noreorder; | |
4415 | mips_any_noreorder = 1; | |
4416 | if (mips_trap) | |
4417 | { | |
2396cfb9 | 4418 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "teq", |
9bd7d936 | 4419 | "s,t,q", treg, 0, 7); |
2396cfb9 TS |
4420 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "z,s,t", |
4421 | sreg, treg); | |
252b5132 RH |
4422 | /* We want to close the noreorder block as soon as possible, so |
4423 | that later insns are available for delay slot filling. */ | |
4424 | --mips_opts.noreorder; | |
4425 | } | |
4426 | else | |
4427 | { | |
4428 | expr1.X_add_number = 8; | |
4429 | macro_build ((char *) NULL, &icnt, &expr1, "bne", "s,t,p", treg, 0); | |
2396cfb9 TS |
4430 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "z,s,t", |
4431 | sreg, treg); | |
252b5132 RH |
4432 | |
4433 | /* We want to close the noreorder block as soon as possible, so | |
4434 | that later insns are available for delay slot filling. */ | |
4435 | --mips_opts.noreorder; | |
2396cfb9 TS |
4436 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
4437 | "c", 7); | |
252b5132 | 4438 | } |
2396cfb9 | 4439 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s2, "d", dreg); |
252b5132 RH |
4440 | return; |
4441 | ||
4442 | case M_DLA_AB: | |
4443 | dbl = 1; | |
4444 | case M_LA_AB: | |
4445 | /* Load the address of a symbol into a register. If breg is not | |
4446 | zero, we then add a base register to it. */ | |
4447 | ||
3bec30a8 TS |
4448 | if (dbl && HAVE_32BIT_GPRS) |
4449 | as_warn (_("dla used to load 32-bit register")); | |
4450 | ||
c90bbe5b | 4451 | if (! dbl && HAVE_64BIT_OBJECTS) |
3bec30a8 TS |
4452 | as_warn (_("la used to load 64-bit address")); |
4453 | ||
0c11417f MR |
4454 | if (offset_expr.X_op == O_constant |
4455 | && offset_expr.X_add_number >= -0x8000 | |
4456 | && offset_expr.X_add_number < 0x8000) | |
4457 | { | |
4458 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
4459 | (dbl || HAVE_64BIT_ADDRESSES) ? "daddiu" : "addiu", | |
4460 | "t,r,j", treg, sreg, (int) BFD_RELOC_LO16); | |
4461 | return; | |
4462 | } | |
4463 | ||
afdbd6d0 CD |
4464 | if (treg == breg) |
4465 | { | |
4466 | tempreg = AT; | |
4467 | used_at = 1; | |
4468 | } | |
4469 | else | |
4470 | { | |
4471 | tempreg = treg; | |
4472 | used_at = 0; | |
4473 | } | |
4474 | ||
252b5132 RH |
4475 | /* When generating embedded PIC code, we permit expressions of |
4476 | the form | |
afdbd6d0 CD |
4477 | la $treg,foo-bar |
4478 | la $treg,foo-bar($breg) | |
bb2d6cd7 | 4479 | where bar is an address in the current section. These are used |
252b5132 RH |
4480 | when getting the addresses of functions. We don't permit |
4481 | X_add_number to be non-zero, because if the symbol is | |
4482 | external the relaxing code needs to know that any addend is | |
4483 | purely the offset to X_op_symbol. */ | |
4484 | if (mips_pic == EMBEDDED_PIC | |
4485 | && offset_expr.X_op == O_subtract | |
49309057 | 4486 | && (symbol_constant_p (offset_expr.X_op_symbol) |
bb2d6cd7 | 4487 | ? S_GET_SEGMENT (offset_expr.X_op_symbol) == now_seg |
49309057 ILT |
4488 | : (symbol_equated_p (offset_expr.X_op_symbol) |
4489 | && (S_GET_SEGMENT | |
4490 | (symbol_get_value_expression (offset_expr.X_op_symbol) | |
4491 | ->X_add_symbol) | |
bb2d6cd7 | 4492 | == now_seg))) |
bb2d6cd7 GK |
4493 | && (offset_expr.X_add_number == 0 |
4494 | || OUTPUT_FLAVOR == bfd_target_elf_flavour)) | |
252b5132 | 4495 | { |
afdbd6d0 CD |
4496 | if (breg == 0) |
4497 | { | |
4498 | tempreg = treg; | |
4499 | used_at = 0; | |
4500 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
4501 | tempreg, (int) BFD_RELOC_PCREL_HI16_S); | |
4502 | } | |
4503 | else | |
4504 | { | |
4505 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
4506 | tempreg, (int) BFD_RELOC_PCREL_HI16_S); | |
4507 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
4d34fb5f | 4508 | (dbl || HAVE_64BIT_ADDRESSES) ? "daddu" : "addu", |
afdbd6d0 CD |
4509 | "d,v,t", tempreg, tempreg, breg); |
4510 | } | |
252b5132 | 4511 | macro_build ((char *) NULL, &icnt, &offset_expr, |
4d34fb5f | 4512 | (dbl || HAVE_64BIT_ADDRESSES) ? "daddiu" : "addiu", |
afdbd6d0 CD |
4513 | "t,r,j", treg, tempreg, (int) BFD_RELOC_PCREL_LO16); |
4514 | if (! used_at) | |
4515 | return; | |
4516 | break; | |
252b5132 RH |
4517 | } |
4518 | ||
4519 | if (offset_expr.X_op != O_symbol | |
4520 | && offset_expr.X_op != O_constant) | |
4521 | { | |
4522 | as_bad (_("expression too complex")); | |
4523 | offset_expr.X_op = O_constant; | |
4524 | } | |
4525 | ||
252b5132 | 4526 | if (offset_expr.X_op == O_constant) |
4d34fb5f TS |
4527 | load_register (&icnt, tempreg, &offset_expr, |
4528 | ((mips_pic == EMBEDDED_PIC || mips_pic == NO_PIC) | |
4529 | ? (dbl || HAVE_64BIT_ADDRESSES) | |
4530 | : HAVE_64BIT_ADDRESSES)); | |
252b5132 RH |
4531 | else if (mips_pic == NO_PIC) |
4532 | { | |
d6bc6245 | 4533 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 | 4534 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
4535 | Otherwise we want |
4536 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
4537 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
4538 | If we have a constant, we need two instructions anyhow, | |
d6bc6245 | 4539 | so we may as well always use the latter form. |
76b3015f | 4540 | |
d6bc6245 TS |
4541 | With 64bit address space and a usable $at we want |
4542 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
4543 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
4544 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
4545 | daddiu $at,<sym> (BFD_RELOC_LO16) | |
4546 | dsll32 $tempreg,0 | |
3a482fd5 | 4547 | daddu $tempreg,$tempreg,$at |
76b3015f | 4548 | |
d6bc6245 TS |
4549 | If $at is already in use, we use an path which is suboptimal |
4550 | on superscalar processors. | |
4551 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
4552 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
4553 | dsll $tempreg,16 | |
4554 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
4555 | dsll $tempreg,16 | |
4556 | daddiu $tempreg,<sym> (BFD_RELOC_LO16) | |
4557 | */ | |
f9419b05 | 4558 | char *p = NULL; |
d6bc6245 | 4559 | if (HAVE_64BIT_ADDRESSES) |
252b5132 | 4560 | { |
d6bc6245 TS |
4561 | /* We don't do GP optimization for now because RELAX_ENCODE can't |
4562 | hold the data for such large chunks. */ | |
4563 | ||
460597ba | 4564 | if (used_at == 0 && ! mips_opts.noat) |
98d3f06f KH |
4565 | { |
4566 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
4567 | tempreg, (int) BFD_RELOC_MIPS_HIGHEST); | |
4568 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
4569 | AT, (int) BFD_RELOC_HI16_S); | |
4570 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
4571 | tempreg, tempreg, (int) BFD_RELOC_MIPS_HIGHER); | |
4572 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
4573 | AT, AT, (int) BFD_RELOC_LO16); | |
4574 | macro_build (p, &icnt, (expressionS *) NULL, "dsll32", | |
4575 | "d,w,<", tempreg, tempreg, 0); | |
3a482fd5 MR |
4576 | macro_build (p, &icnt, (expressionS *) NULL, "daddu", |
4577 | "d,v,t", tempreg, tempreg, AT); | |
98d3f06f KH |
4578 | used_at = 1; |
4579 | } | |
4580 | else | |
4581 | { | |
4582 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
4583 | tempreg, (int) BFD_RELOC_MIPS_HIGHEST); | |
4584 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
4585 | tempreg, tempreg, (int) BFD_RELOC_MIPS_HIGHER); | |
4586 | macro_build (p, &icnt, (expressionS *) NULL, "dsll", "d,w,<", | |
4587 | tempreg, tempreg, 16); | |
4588 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
4589 | tempreg, tempreg, (int) BFD_RELOC_HI16_S); | |
4590 | macro_build (p, &icnt, (expressionS *) NULL, "dsll", "d,w,<", | |
4591 | tempreg, tempreg, 16); | |
4592 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
4593 | tempreg, tempreg, (int) BFD_RELOC_LO16); | |
4594 | } | |
4595 | } | |
4596 | else | |
4597 | { | |
4598 | if ((valueT) offset_expr.X_add_number <= MAX_GPREL_OFFSET | |
4599 | && ! nopic_need_relax (offset_expr.X_add_symbol, 1)) | |
4600 | { | |
4601 | frag_grow (20); | |
4602 | macro_build ((char *) NULL, &icnt, &offset_expr, "addiu", | |
c9914766 TS |
4603 | "t,r,j", tempreg, mips_gp_register, |
4604 | (int) BFD_RELOC_GPREL16); | |
98d3f06f KH |
4605 | p = frag_var (rs_machine_dependent, 8, 0, |
4606 | RELAX_ENCODE (4, 8, 0, 4, 0, | |
4607 | mips_opts.warn_about_macros), | |
4608 | offset_expr.X_add_symbol, 0, NULL); | |
4609 | } | |
4610 | macro_build_lui (p, &icnt, &offset_expr, tempreg); | |
4611 | if (p != NULL) | |
4612 | p += 4; | |
4613 | macro_build (p, &icnt, &offset_expr, "addiu", | |
4614 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); | |
4615 | } | |
252b5132 RH |
4616 | } |
4617 | else if (mips_pic == SVR4_PIC && ! mips_big_got) | |
4618 | { | |
9117d219 NC |
4619 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT16; |
4620 | ||
252b5132 RH |
4621 | /* If this is a reference to an external symbol, and there |
4622 | is no constant, we want | |
4623 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
9117d219 NC |
4624 | or if tempreg is PIC_CALL_REG |
4625 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
252b5132 RH |
4626 | For a local symbol, we want |
4627 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4628 | nop | |
4629 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
4630 | ||
4631 | If we have a small constant, and this is a reference to | |
4632 | an external symbol, we want | |
4633 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4634 | nop | |
4635 | addiu $tempreg,$tempreg,<constant> | |
4636 | For a local symbol, we want the same instruction | |
4637 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
4638 | addiu instruction. | |
4639 | ||
4640 | If we have a large constant, and this is a reference to | |
4641 | an external symbol, we want | |
4642 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4643 | lui $at,<hiconstant> | |
4644 | addiu $at,$at,<loconstant> | |
4645 | addu $tempreg,$tempreg,$at | |
4646 | For a local symbol, we want the same instruction | |
4647 | sequence, but we output a BFD_RELOC_LO16 reloc on the | |
4648 | addiu instruction. */ | |
4649 | expr1.X_add_number = offset_expr.X_add_number; | |
4650 | offset_expr.X_add_number = 0; | |
4651 | frag_grow (32); | |
9117d219 NC |
4652 | if (expr1.X_add_number == 0 && tempreg == PIC_CALL_REG) |
4653 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL16; | |
4d34fb5f TS |
4654 | macro_build ((char *) NULL, &icnt, &offset_expr, |
4655 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
c9914766 | 4656 | "t,o(b)", tempreg, lw_reloc_type, mips_gp_register); |
252b5132 RH |
4657 | if (expr1.X_add_number == 0) |
4658 | { | |
4659 | int off; | |
f9419b05 | 4660 | char *p; |
252b5132 RH |
4661 | |
4662 | if (breg == 0) | |
4663 | off = 0; | |
4664 | else | |
4665 | { | |
4666 | /* We're going to put in an addu instruction using | |
4667 | tempreg, so we may as well insert the nop right | |
4668 | now. */ | |
4669 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
4670 | "nop", ""); | |
4671 | off = 4; | |
4672 | } | |
4673 | p = frag_var (rs_machine_dependent, 8 - off, 0, | |
4674 | RELAX_ENCODE (0, 8 - off, -4 - off, 4 - off, 0, | |
4675 | (breg == 0 | |
4676 | ? mips_opts.warn_about_macros | |
4677 | : 0)), | |
c4e7957c | 4678 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
4679 | if (breg == 0) |
4680 | { | |
4681 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
4682 | p += 4; | |
4683 | } | |
4684 | macro_build (p, &icnt, &expr1, | |
ca4e0257 | 4685 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
4686 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
4687 | /* FIXME: If breg == 0, and the next instruction uses | |
4688 | $tempreg, then if this variant case is used an extra | |
4689 | nop will be generated. */ | |
4690 | } | |
4691 | else if (expr1.X_add_number >= -0x8000 | |
4692 | && expr1.X_add_number < 0x8000) | |
4693 | { | |
4694 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
4695 | "nop", ""); | |
4696 | macro_build ((char *) NULL, &icnt, &expr1, | |
ca4e0257 | 4697 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 | 4698 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
c4e7957c TS |
4699 | frag_var (rs_machine_dependent, 0, 0, |
4700 | RELAX_ENCODE (0, 0, -12, -4, 0, 0), | |
4701 | offset_expr.X_add_symbol, 0, NULL); | |
252b5132 RH |
4702 | } |
4703 | else | |
4704 | { | |
4705 | int off1; | |
4706 | ||
4707 | /* If we are going to add in a base register, and the | |
4708 | target register and the base register are the same, | |
4709 | then we are using AT as a temporary register. Since | |
4710 | we want to load the constant into AT, we add our | |
4711 | current AT (from the global offset table) and the | |
4712 | register into the register now, and pretend we were | |
4713 | not using a base register. */ | |
4714 | if (breg != treg) | |
4715 | off1 = 0; | |
4716 | else | |
4717 | { | |
4718 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
4719 | "nop", ""); | |
4720 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 4721 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
4722 | "d,v,t", treg, AT, breg); |
4723 | breg = 0; | |
4724 | tempreg = treg; | |
4725 | off1 = -8; | |
4726 | } | |
4727 | ||
4728 | /* Set mips_optimize around the lui instruction to avoid | |
4729 | inserting an unnecessary nop after the lw. */ | |
4730 | hold_mips_optimize = mips_optimize; | |
4731 | mips_optimize = 2; | |
c4e7957c | 4732 | macro_build_lui (NULL, &icnt, &expr1, AT); |
252b5132 RH |
4733 | mips_optimize = hold_mips_optimize; |
4734 | ||
4735 | macro_build ((char *) NULL, &icnt, &expr1, | |
ca4e0257 | 4736 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
4737 | "t,r,j", AT, AT, (int) BFD_RELOC_LO16); |
4738 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 4739 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 | 4740 | "d,v,t", tempreg, tempreg, AT); |
c4e7957c TS |
4741 | frag_var (rs_machine_dependent, 0, 0, |
4742 | RELAX_ENCODE (0, 0, -16 + off1, -8, 0, 0), | |
4743 | offset_expr.X_add_symbol, 0, NULL); | |
252b5132 RH |
4744 | used_at = 1; |
4745 | } | |
4746 | } | |
4747 | else if (mips_pic == SVR4_PIC) | |
4748 | { | |
4749 | int gpdel; | |
f9419b05 | 4750 | char *p; |
9117d219 NC |
4751 | int lui_reloc_type = (int) BFD_RELOC_MIPS_GOT_HI16; |
4752 | int lw_reloc_type = (int) BFD_RELOC_MIPS_GOT_LO16; | |
252b5132 RH |
4753 | |
4754 | /* This is the large GOT case. If this is a reference to an | |
4755 | external symbol, and there is no constant, we want | |
4756 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
4757 | addu $tempreg,$tempreg,$gp | |
4758 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
9117d219 NC |
4759 | or if tempreg is PIC_CALL_REG |
4760 | lui $tempreg,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
4761 | addu $tempreg,$tempreg,$gp | |
4762 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_CALL_LO16) | |
252b5132 RH |
4763 | For a local symbol, we want |
4764 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4765 | nop | |
4766 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
4767 | ||
4768 | If we have a small constant, and this is a reference to | |
4769 | an external symbol, we want | |
4770 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
4771 | addu $tempreg,$tempreg,$gp | |
4772 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
4773 | nop | |
4774 | addiu $tempreg,$tempreg,<constant> | |
4775 | For a local symbol, we want | |
4776 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4777 | nop | |
4778 | addiu $tempreg,$tempreg,<constant> (BFD_RELOC_LO16) | |
4779 | ||
4780 | If we have a large constant, and this is a reference to | |
4781 | an external symbol, we want | |
4782 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
4783 | addu $tempreg,$tempreg,$gp | |
4784 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
4785 | lui $at,<hiconstant> | |
4786 | addiu $at,$at,<loconstant> | |
4787 | addu $tempreg,$tempreg,$at | |
4788 | For a local symbol, we want | |
4789 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
4790 | lui $at,<hiconstant> | |
4791 | addiu $at,$at,<loconstant> (BFD_RELOC_LO16) | |
4792 | addu $tempreg,$tempreg,$at | |
438c16b8 TS |
4793 | |
4794 | For NewABI, we want for data addresses | |
4795 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
4796 | If tempreg is PIC_CALL_REG pointing to a external symbol, we want | |
4797 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
4798 | */ | |
4799 | if (HAVE_NEWABI) | |
4800 | { | |
4801 | int reloc_type = (tempreg == PIC_CALL_REG | |
4802 | ? BFD_RELOC_MIPS_CALL16 | |
4803 | : BFD_RELOC_MIPS_GOT_DISP); | |
4804 | ||
4805 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
4806 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
4807 | "t,o(b)", tempreg, reloc_type, mips_gp_register); | |
4808 | ||
4809 | if (breg != 0) | |
4810 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
4811 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", | |
4812 | "d,v,t", treg, tempreg, breg); | |
4813 | ||
4814 | if (! used_at) | |
4815 | return; | |
4816 | ||
4817 | break; | |
4818 | } | |
252b5132 RH |
4819 | expr1.X_add_number = offset_expr.X_add_number; |
4820 | offset_expr.X_add_number = 0; | |
4821 | frag_grow (52); | |
f7ea7ef2 | 4822 | if (reg_needs_delay (mips_gp_register)) |
252b5132 RH |
4823 | gpdel = 4; |
4824 | else | |
4825 | gpdel = 0; | |
9117d219 NC |
4826 | if (expr1.X_add_number == 0 && tempreg == PIC_CALL_REG) |
4827 | { | |
4828 | lui_reloc_type = (int) BFD_RELOC_MIPS_CALL_HI16; | |
4829 | lw_reloc_type = (int) BFD_RELOC_MIPS_CALL_LO16; | |
4830 | } | |
252b5132 | 4831 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", |
9117d219 | 4832 | tempreg, lui_reloc_type); |
252b5132 | 4833 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
ca4e0257 | 4834 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 4835 | "d,v,t", tempreg, tempreg, mips_gp_register); |
252b5132 | 4836 | macro_build ((char *) NULL, &icnt, &offset_expr, |
4d34fb5f | 4837 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
9117d219 | 4838 | "t,o(b)", tempreg, lw_reloc_type, tempreg); |
252b5132 RH |
4839 | if (expr1.X_add_number == 0) |
4840 | { | |
4841 | int off; | |
4842 | ||
4843 | if (breg == 0) | |
4844 | off = 0; | |
4845 | else | |
4846 | { | |
4847 | /* We're going to put in an addu instruction using | |
4848 | tempreg, so we may as well insert the nop right | |
4849 | now. */ | |
4850 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
4851 | "nop", ""); | |
4852 | off = 4; | |
4853 | } | |
4854 | ||
4855 | p = frag_var (rs_machine_dependent, 12 + gpdel, 0, | |
4856 | RELAX_ENCODE (12 + off, 12 + gpdel, gpdel, | |
4857 | 8 + gpdel, 0, | |
4858 | (breg == 0 | |
4859 | ? mips_opts.warn_about_macros | |
4860 | : 0)), | |
c4e7957c | 4861 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
4862 | } |
4863 | else if (expr1.X_add_number >= -0x8000 | |
4864 | && expr1.X_add_number < 0x8000) | |
4865 | { | |
4866 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
4867 | "nop", ""); | |
4868 | macro_build ((char *) NULL, &icnt, &expr1, | |
ca4e0257 | 4869 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
4870 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
4871 | ||
4872 | p = frag_var (rs_machine_dependent, 12 + gpdel, 0, | |
4873 | RELAX_ENCODE (20, 12 + gpdel, gpdel, 8 + gpdel, 0, | |
4874 | (breg == 0 | |
4875 | ? mips_opts.warn_about_macros | |
4876 | : 0)), | |
c4e7957c | 4877 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
4878 | } |
4879 | else | |
4880 | { | |
4881 | int adj, dreg; | |
4882 | ||
4883 | /* If we are going to add in a base register, and the | |
4884 | target register and the base register are the same, | |
4885 | then we are using AT as a temporary register. Since | |
4886 | we want to load the constant into AT, we add our | |
4887 | current AT (from the global offset table) and the | |
4888 | register into the register now, and pretend we were | |
4889 | not using a base register. */ | |
4890 | if (breg != treg) | |
4891 | { | |
4892 | adj = 0; | |
4893 | dreg = tempreg; | |
4894 | } | |
4895 | else | |
4896 | { | |
4897 | assert (tempreg == AT); | |
4898 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
4899 | "nop", ""); | |
4900 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 4901 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
4902 | "d,v,t", treg, AT, breg); |
4903 | dreg = treg; | |
4904 | adj = 8; | |
4905 | } | |
4906 | ||
4907 | /* Set mips_optimize around the lui instruction to avoid | |
4908 | inserting an unnecessary nop after the lw. */ | |
4909 | hold_mips_optimize = mips_optimize; | |
4910 | mips_optimize = 2; | |
c4e7957c | 4911 | macro_build_lui (NULL, &icnt, &expr1, AT); |
252b5132 RH |
4912 | mips_optimize = hold_mips_optimize; |
4913 | ||
4914 | macro_build ((char *) NULL, &icnt, &expr1, | |
ca4e0257 | 4915 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
4916 | "t,r,j", AT, AT, (int) BFD_RELOC_LO16); |
4917 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 4918 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
4919 | "d,v,t", dreg, dreg, AT); |
4920 | ||
4921 | p = frag_var (rs_machine_dependent, 16 + gpdel + adj, 0, | |
4922 | RELAX_ENCODE (24 + adj, 16 + gpdel + adj, gpdel, | |
4923 | 8 + gpdel, 0, | |
4924 | (breg == 0 | |
4925 | ? mips_opts.warn_about_macros | |
4926 | : 0)), | |
c4e7957c | 4927 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
4928 | |
4929 | used_at = 1; | |
4930 | } | |
4931 | ||
4932 | if (gpdel > 0) | |
4933 | { | |
4934 | /* This is needed because this instruction uses $gp, but | |
4935 | the first instruction on the main stream does not. */ | |
4936 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
4937 | p += 4; | |
4938 | } | |
4939 | macro_build (p, &icnt, &offset_expr, | |
4d34fb5f | 4940 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
c9914766 TS |
4941 | "t,o(b)", tempreg, (int) BFD_RELOC_MIPS_GOT16, |
4942 | mips_gp_register); | |
252b5132 RH |
4943 | p += 4; |
4944 | if (expr1.X_add_number >= -0x8000 | |
4945 | && expr1.X_add_number < 0x8000) | |
4946 | { | |
4947 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
4948 | p += 4; | |
4949 | macro_build (p, &icnt, &expr1, | |
ca4e0257 | 4950 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
4951 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
4952 | /* FIXME: If add_number is 0, and there was no base | |
4953 | register, the external symbol case ended with a load, | |
4954 | so if the symbol turns out to not be external, and | |
4955 | the next instruction uses tempreg, an unnecessary nop | |
4956 | will be inserted. */ | |
4957 | } | |
4958 | else | |
4959 | { | |
4960 | if (breg == treg) | |
4961 | { | |
4962 | /* We must add in the base register now, as in the | |
4963 | external symbol case. */ | |
4964 | assert (tempreg == AT); | |
4965 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
4966 | p += 4; | |
4967 | macro_build (p, &icnt, (expressionS *) NULL, | |
ca4e0257 | 4968 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
4969 | "d,v,t", treg, AT, breg); |
4970 | p += 4; | |
4971 | tempreg = treg; | |
4972 | /* We set breg to 0 because we have arranged to add | |
4973 | it in in both cases. */ | |
4974 | breg = 0; | |
4975 | } | |
4976 | ||
4977 | macro_build_lui (p, &icnt, &expr1, AT); | |
4978 | p += 4; | |
4979 | macro_build (p, &icnt, &expr1, | |
ca4e0257 | 4980 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
4981 | "t,r,j", AT, AT, (int) BFD_RELOC_LO16); |
4982 | p += 4; | |
4983 | macro_build (p, &icnt, (expressionS *) NULL, | |
ca4e0257 | 4984 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
4985 | "d,v,t", tempreg, tempreg, AT); |
4986 | p += 4; | |
4987 | } | |
4988 | } | |
4989 | else if (mips_pic == EMBEDDED_PIC) | |
4990 | { | |
4991 | /* We use | |
cdf6fd85 | 4992 | addiu $tempreg,$gp,<sym> (BFD_RELOC_GPREL16) |
252b5132 RH |
4993 | */ |
4994 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
c9914766 TS |
4995 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", "t,r,j", |
4996 | tempreg, mips_gp_register, (int) BFD_RELOC_GPREL16); | |
252b5132 RH |
4997 | } |
4998 | else | |
4999 | abort (); | |
5000 | ||
5001 | if (breg != 0) | |
4d34fb5f TS |
5002 | { |
5003 | char *s; | |
5004 | ||
5005 | if (mips_pic == EMBEDDED_PIC || mips_pic == NO_PIC) | |
5006 | s = (dbl || HAVE_64BIT_ADDRESSES) ? "daddu" : "addu"; | |
5007 | else | |
5008 | s = HAVE_64BIT_ADDRESSES ? "daddu" : "addu"; | |
5009 | ||
5010 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, | |
5011 | "d,v,t", treg, tempreg, breg); | |
5012 | } | |
252b5132 RH |
5013 | |
5014 | if (! used_at) | |
5015 | return; | |
5016 | ||
5017 | break; | |
5018 | ||
5019 | case M_J_A: | |
5020 | /* The j instruction may not be used in PIC code, since it | |
5021 | requires an absolute address. We convert it to a b | |
5022 | instruction. */ | |
5023 | if (mips_pic == NO_PIC) | |
5024 | macro_build ((char *) NULL, &icnt, &offset_expr, "j", "a"); | |
5025 | else | |
5026 | macro_build ((char *) NULL, &icnt, &offset_expr, "b", "p"); | |
5027 | return; | |
5028 | ||
5029 | /* The jal instructions must be handled as macros because when | |
5030 | generating PIC code they expand to multi-instruction | |
5031 | sequences. Normally they are simple instructions. */ | |
5032 | case M_JAL_1: | |
5033 | dreg = RA; | |
5034 | /* Fall through. */ | |
5035 | case M_JAL_2: | |
5036 | if (mips_pic == NO_PIC | |
5037 | || mips_pic == EMBEDDED_PIC) | |
5038 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "jalr", | |
5039 | "d,s", dreg, sreg); | |
5040 | else if (mips_pic == SVR4_PIC) | |
5041 | { | |
5042 | if (sreg != PIC_CALL_REG) | |
5043 | as_warn (_("MIPS PIC call to register other than $25")); | |
bdaaa2e1 | 5044 | |
252b5132 RH |
5045 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "jalr", |
5046 | "d,s", dreg, sreg); | |
6478892d | 5047 | if (! HAVE_NEWABI) |
252b5132 | 5048 | { |
6478892d TS |
5049 | if (mips_cprestore_offset < 0) |
5050 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5051 | else | |
5052 | { | |
7a621144 DJ |
5053 | if (! mips_frame_reg_valid) |
5054 | { | |
5055 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
5056 | /* Quiet this warning. */ | |
5057 | mips_frame_reg_valid = 1; | |
5058 | } | |
5059 | if (! mips_cprestore_valid) | |
5060 | { | |
5061 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5062 | /* Quiet this warning. */ | |
5063 | mips_cprestore_valid = 1; | |
5064 | } | |
6478892d TS |
5065 | expr1.X_add_number = mips_cprestore_offset; |
5066 | macro_build ((char *) NULL, &icnt, &expr1, | |
5067 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", | |
c9914766 TS |
5068 | mips_gp_register, (int) BFD_RELOC_LO16, |
5069 | mips_frame_reg); | |
6478892d | 5070 | } |
252b5132 RH |
5071 | } |
5072 | } | |
5073 | else | |
5074 | abort (); | |
5075 | ||
5076 | return; | |
5077 | ||
5078 | case M_JAL_A: | |
5079 | if (mips_pic == NO_PIC) | |
5080 | macro_build ((char *) NULL, &icnt, &offset_expr, "jal", "a"); | |
5081 | else if (mips_pic == SVR4_PIC) | |
5082 | { | |
f9419b05 TS |
5083 | char *p; |
5084 | ||
252b5132 RH |
5085 | /* If this is a reference to an external symbol, and we are |
5086 | using a small GOT, we want | |
5087 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_CALL16) | |
5088 | nop | |
f9419b05 | 5089 | jalr $ra,$25 |
252b5132 RH |
5090 | nop |
5091 | lw $gp,cprestore($sp) | |
5092 | The cprestore value is set using the .cprestore | |
5093 | pseudo-op. If we are using a big GOT, we want | |
5094 | lui $25,<sym> (BFD_RELOC_MIPS_CALL_HI16) | |
5095 | addu $25,$25,$gp | |
5096 | lw $25,<sym>($25) (BFD_RELOC_MIPS_CALL_LO16) | |
5097 | nop | |
f9419b05 | 5098 | jalr $ra,$25 |
252b5132 RH |
5099 | nop |
5100 | lw $gp,cprestore($sp) | |
5101 | If the symbol is not external, we want | |
5102 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5103 | nop | |
5104 | addiu $25,$25,<sym> (BFD_RELOC_LO16) | |
f9419b05 | 5105 | jalr $ra,$25 |
252b5132 | 5106 | nop |
438c16b8 TS |
5107 | lw $gp,cprestore($sp) |
5108 | For NewABI, we want | |
5109 | lw $25,<sym>($gp) (BFD_RELOC_MIPS_GOT_DISP) | |
5110 | jalr $ra,$25 (BFD_RELOC_MIPS_JALR) | |
5111 | */ | |
5112 | if (HAVE_NEWABI) | |
252b5132 RH |
5113 | { |
5114 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
ca4e0257 | 5115 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
252b5132 | 5116 | "t,o(b)", PIC_CALL_REG, |
438c16b8 TS |
5117 | (int) BFD_RELOC_MIPS_GOT_DISP, mips_gp_register); |
5118 | macro_build_jalr (icnt, &offset_expr); | |
252b5132 RH |
5119 | } |
5120 | else | |
5121 | { | |
438c16b8 TS |
5122 | frag_grow (40); |
5123 | if (! mips_big_got) | |
5124 | { | |
5125 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
5126 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5127 | "t,o(b)", PIC_CALL_REG, | |
5128 | (int) BFD_RELOC_MIPS_CALL16, mips_gp_register); | |
5129 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5130 | "nop", ""); | |
5131 | p = frag_var (rs_machine_dependent, 4, 0, | |
5132 | RELAX_ENCODE (0, 4, -8, 0, 0, 0), | |
5133 | offset_expr.X_add_symbol, 0, NULL); | |
5134 | } | |
252b5132 | 5135 | else |
252b5132 | 5136 | { |
438c16b8 TS |
5137 | int gpdel; |
5138 | ||
5139 | if (reg_needs_delay (mips_gp_register)) | |
5140 | gpdel = 4; | |
5141 | else | |
5142 | gpdel = 0; | |
5143 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", | |
5144 | "t,u", PIC_CALL_REG, | |
5145 | (int) BFD_RELOC_MIPS_CALL_HI16); | |
5146 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5147 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", | |
5148 | "d,v,t", PIC_CALL_REG, PIC_CALL_REG, | |
5149 | mips_gp_register); | |
5150 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
5151 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5152 | "t,o(b)", PIC_CALL_REG, | |
5153 | (int) BFD_RELOC_MIPS_CALL_LO16, PIC_CALL_REG); | |
5154 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5155 | "nop", ""); | |
5156 | p = frag_var (rs_machine_dependent, 12 + gpdel, 0, | |
5157 | RELAX_ENCODE (16, 12 + gpdel, gpdel, | |
5158 | 8 + gpdel, 0, 0), | |
5159 | offset_expr.X_add_symbol, 0, NULL); | |
5160 | if (gpdel > 0) | |
5161 | { | |
5162 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
5163 | p += 4; | |
5164 | } | |
5165 | macro_build (p, &icnt, &offset_expr, | |
5166 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5167 | "t,o(b)", PIC_CALL_REG, | |
5168 | (int) BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
5169 | p += 4; | |
252b5132 RH |
5170 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); |
5171 | p += 4; | |
5172 | } | |
5173 | macro_build (p, &icnt, &offset_expr, | |
438c16b8 TS |
5174 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
5175 | "t,r,j", PIC_CALL_REG, PIC_CALL_REG, | |
5176 | (int) BFD_RELOC_LO16); | |
5177 | macro_build_jalr (icnt, &offset_expr); | |
5178 | ||
6478892d TS |
5179 | if (mips_cprestore_offset < 0) |
5180 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5181 | else | |
5182 | { | |
7a621144 DJ |
5183 | if (! mips_frame_reg_valid) |
5184 | { | |
5185 | as_warn (_("No .frame pseudo-op used in PIC code")); | |
5186 | /* Quiet this warning. */ | |
5187 | mips_frame_reg_valid = 1; | |
5188 | } | |
5189 | if (! mips_cprestore_valid) | |
5190 | { | |
5191 | as_warn (_("No .cprestore pseudo-op used in PIC code")); | |
5192 | /* Quiet this warning. */ | |
5193 | mips_cprestore_valid = 1; | |
5194 | } | |
6478892d TS |
5195 | if (mips_opts.noreorder) |
5196 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
98d3f06f | 5197 | "nop", ""); |
6478892d TS |
5198 | expr1.X_add_number = mips_cprestore_offset; |
5199 | macro_build ((char *) NULL, &icnt, &expr1, | |
5200 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", | |
c9914766 TS |
5201 | mips_gp_register, (int) BFD_RELOC_LO16, |
5202 | mips_frame_reg); | |
6478892d | 5203 | } |
252b5132 RH |
5204 | } |
5205 | } | |
5206 | else if (mips_pic == EMBEDDED_PIC) | |
5207 | { | |
5208 | macro_build ((char *) NULL, &icnt, &offset_expr, "bal", "p"); | |
5209 | /* The linker may expand the call to a longer sequence which | |
5210 | uses $at, so we must break rather than return. */ | |
5211 | break; | |
5212 | } | |
5213 | else | |
5214 | abort (); | |
5215 | ||
5216 | return; | |
5217 | ||
5218 | case M_LB_AB: | |
5219 | s = "lb"; | |
5220 | goto ld; | |
5221 | case M_LBU_AB: | |
5222 | s = "lbu"; | |
5223 | goto ld; | |
5224 | case M_LH_AB: | |
5225 | s = "lh"; | |
5226 | goto ld; | |
5227 | case M_LHU_AB: | |
5228 | s = "lhu"; | |
5229 | goto ld; | |
5230 | case M_LW_AB: | |
5231 | s = "lw"; | |
5232 | goto ld; | |
5233 | case M_LWC0_AB: | |
5234 | s = "lwc0"; | |
bdaaa2e1 | 5235 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5236 | coproc = 1; |
5237 | goto ld; | |
5238 | case M_LWC1_AB: | |
5239 | s = "lwc1"; | |
bdaaa2e1 | 5240 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5241 | coproc = 1; |
5242 | goto ld; | |
5243 | case M_LWC2_AB: | |
5244 | s = "lwc2"; | |
bdaaa2e1 | 5245 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5246 | coproc = 1; |
5247 | goto ld; | |
5248 | case M_LWC3_AB: | |
5249 | s = "lwc3"; | |
bdaaa2e1 | 5250 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5251 | coproc = 1; |
5252 | goto ld; | |
5253 | case M_LWL_AB: | |
5254 | s = "lwl"; | |
5255 | lr = 1; | |
5256 | goto ld; | |
5257 | case M_LWR_AB: | |
5258 | s = "lwr"; | |
5259 | lr = 1; | |
5260 | goto ld; | |
5261 | case M_LDC1_AB: | |
ec68c924 | 5262 | if (mips_arch == CPU_R4650) |
252b5132 RH |
5263 | { |
5264 | as_bad (_("opcode not supported on this processor")); | |
5265 | return; | |
5266 | } | |
5267 | s = "ldc1"; | |
bdaaa2e1 | 5268 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5269 | coproc = 1; |
5270 | goto ld; | |
5271 | case M_LDC2_AB: | |
5272 | s = "ldc2"; | |
bdaaa2e1 | 5273 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5274 | coproc = 1; |
5275 | goto ld; | |
5276 | case M_LDC3_AB: | |
5277 | s = "ldc3"; | |
bdaaa2e1 | 5278 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5279 | coproc = 1; |
5280 | goto ld; | |
5281 | case M_LDL_AB: | |
5282 | s = "ldl"; | |
5283 | lr = 1; | |
5284 | goto ld; | |
5285 | case M_LDR_AB: | |
5286 | s = "ldr"; | |
5287 | lr = 1; | |
5288 | goto ld; | |
5289 | case M_LL_AB: | |
5290 | s = "ll"; | |
5291 | goto ld; | |
5292 | case M_LLD_AB: | |
5293 | s = "lld"; | |
5294 | goto ld; | |
5295 | case M_LWU_AB: | |
5296 | s = "lwu"; | |
5297 | ld: | |
5298 | if (breg == treg || coproc || lr) | |
5299 | { | |
5300 | tempreg = AT; | |
5301 | used_at = 1; | |
5302 | } | |
5303 | else | |
5304 | { | |
5305 | tempreg = treg; | |
5306 | used_at = 0; | |
5307 | } | |
5308 | goto ld_st; | |
5309 | case M_SB_AB: | |
5310 | s = "sb"; | |
5311 | goto st; | |
5312 | case M_SH_AB: | |
5313 | s = "sh"; | |
5314 | goto st; | |
5315 | case M_SW_AB: | |
5316 | s = "sw"; | |
5317 | goto st; | |
5318 | case M_SWC0_AB: | |
5319 | s = "swc0"; | |
bdaaa2e1 | 5320 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5321 | coproc = 1; |
5322 | goto st; | |
5323 | case M_SWC1_AB: | |
5324 | s = "swc1"; | |
bdaaa2e1 | 5325 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5326 | coproc = 1; |
5327 | goto st; | |
5328 | case M_SWC2_AB: | |
5329 | s = "swc2"; | |
bdaaa2e1 | 5330 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5331 | coproc = 1; |
5332 | goto st; | |
5333 | case M_SWC3_AB: | |
5334 | s = "swc3"; | |
bdaaa2e1 | 5335 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5336 | coproc = 1; |
5337 | goto st; | |
5338 | case M_SWL_AB: | |
5339 | s = "swl"; | |
5340 | goto st; | |
5341 | case M_SWR_AB: | |
5342 | s = "swr"; | |
5343 | goto st; | |
5344 | case M_SC_AB: | |
5345 | s = "sc"; | |
5346 | goto st; | |
5347 | case M_SCD_AB: | |
5348 | s = "scd"; | |
5349 | goto st; | |
5350 | case M_SDC1_AB: | |
ec68c924 | 5351 | if (mips_arch == CPU_R4650) |
252b5132 RH |
5352 | { |
5353 | as_bad (_("opcode not supported on this processor")); | |
5354 | return; | |
5355 | } | |
5356 | s = "sdc1"; | |
5357 | coproc = 1; | |
bdaaa2e1 | 5358 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5359 | goto st; |
5360 | case M_SDC2_AB: | |
5361 | s = "sdc2"; | |
bdaaa2e1 | 5362 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5363 | coproc = 1; |
5364 | goto st; | |
5365 | case M_SDC3_AB: | |
5366 | s = "sdc3"; | |
bdaaa2e1 | 5367 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5368 | coproc = 1; |
5369 | goto st; | |
5370 | case M_SDL_AB: | |
5371 | s = "sdl"; | |
5372 | goto st; | |
5373 | case M_SDR_AB: | |
5374 | s = "sdr"; | |
5375 | st: | |
5376 | tempreg = AT; | |
5377 | used_at = 1; | |
5378 | ld_st: | |
bdaaa2e1 | 5379 | /* Itbl support may require additional care here. */ |
252b5132 RH |
5380 | if (mask == M_LWC1_AB |
5381 | || mask == M_SWC1_AB | |
5382 | || mask == M_LDC1_AB | |
5383 | || mask == M_SDC1_AB | |
5384 | || mask == M_L_DAB | |
5385 | || mask == M_S_DAB) | |
5386 | fmt = "T,o(b)"; | |
5387 | else if (coproc) | |
5388 | fmt = "E,o(b)"; | |
5389 | else | |
5390 | fmt = "t,o(b)"; | |
5391 | ||
afdbd6d0 CD |
5392 | /* For embedded PIC, we allow loads where the offset is calculated |
5393 | by subtracting a symbol in the current segment from an unknown | |
5394 | symbol, relative to a base register, e.g.: | |
5395 | <op> $treg, <sym>-<localsym>($breg) | |
5396 | This is used by the compiler for switch statements. */ | |
76b3015f | 5397 | if (mips_pic == EMBEDDED_PIC |
afdbd6d0 CD |
5398 | && offset_expr.X_op == O_subtract |
5399 | && (symbol_constant_p (offset_expr.X_op_symbol) | |
5400 | ? S_GET_SEGMENT (offset_expr.X_op_symbol) == now_seg | |
5401 | : (symbol_equated_p (offset_expr.X_op_symbol) | |
5402 | && (S_GET_SEGMENT | |
5403 | (symbol_get_value_expression (offset_expr.X_op_symbol) | |
5404 | ->X_add_symbol) | |
5405 | == now_seg))) | |
5406 | && breg != 0 | |
5407 | && (offset_expr.X_add_number == 0 | |
5408 | || OUTPUT_FLAVOR == bfd_target_elf_flavour)) | |
5409 | { | |
5410 | /* For this case, we output the instructions: | |
5411 | lui $tempreg,<sym> (BFD_RELOC_PCREL_HI16_S) | |
5412 | addiu $tempreg,$tempreg,$breg | |
5413 | <op> $treg,<sym>($tempreg) (BFD_RELOC_PCREL_LO16) | |
5414 | If the relocation would fit entirely in 16 bits, it would be | |
5415 | nice to emit: | |
5416 | <op> $treg,<sym>($breg) (BFD_RELOC_PCREL_LO16) | |
5417 | instead, but that seems quite difficult. */ | |
5418 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
5419 | tempreg, (int) BFD_RELOC_PCREL_HI16_S); | |
5420 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5421 | ((bfd_arch_bits_per_address (stdoutput) == 32 | |
5422 | || ! ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
5423 | ? "addu" : "daddu"), | |
5424 | "d,v,t", tempreg, tempreg, breg); | |
5425 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, treg, | |
5426 | (int) BFD_RELOC_PCREL_LO16, tempreg); | |
5427 | if (! used_at) | |
5428 | return; | |
5429 | break; | |
5430 | } | |
5431 | ||
252b5132 RH |
5432 | if (offset_expr.X_op != O_constant |
5433 | && offset_expr.X_op != O_symbol) | |
5434 | { | |
5435 | as_bad (_("expression too complex")); | |
5436 | offset_expr.X_op = O_constant; | |
5437 | } | |
5438 | ||
5439 | /* A constant expression in PIC code can be handled just as it | |
5440 | is in non PIC code. */ | |
5441 | if (mips_pic == NO_PIC | |
5442 | || offset_expr.X_op == O_constant) | |
5443 | { | |
f9419b05 TS |
5444 | char *p; |
5445 | ||
252b5132 RH |
5446 | /* If this is a reference to a GP relative symbol, and there |
5447 | is no base register, we want | |
cdf6fd85 | 5448 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
5449 | Otherwise, if there is no base register, we want |
5450 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
5451 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
5452 | If we have a constant, we need two instructions anyhow, | |
5453 | so we always use the latter form. | |
5454 | ||
5455 | If we have a base register, and this is a reference to a | |
5456 | GP relative symbol, we want | |
5457 | addu $tempreg,$breg,$gp | |
cdf6fd85 | 5458 | <op> $treg,<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
5459 | Otherwise we want |
5460 | lui $tempreg,<sym> (BFD_RELOC_HI16_S) | |
5461 | addu $tempreg,$tempreg,$breg | |
5462 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
d6bc6245 | 5463 | With a constant we always use the latter case. |
76b3015f | 5464 | |
d6bc6245 TS |
5465 | With 64bit address space and no base register and $at usable, |
5466 | we want | |
5467 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5468 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
5469 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5470 | dsll32 $tempreg,0 | |
5471 | daddu $tempreg,$at | |
5472 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
5473 | If we have a base register, we want | |
5474 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5475 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
5476 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5477 | daddu $at,$breg | |
5478 | dsll32 $tempreg,0 | |
5479 | daddu $tempreg,$at | |
5480 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
5481 | ||
5482 | Without $at we can't generate the optimal path for superscalar | |
5483 | processors here since this would require two temporary registers. | |
5484 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5485 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5486 | dsll $tempreg,16 | |
5487 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
5488 | dsll $tempreg,16 | |
5489 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
5490 | If we have a base register, we want | |
5491 | lui $tempreg,<sym> (BFD_RELOC_MIPS_HIGHEST) | |
5492 | daddiu $tempreg,<sym> (BFD_RELOC_MIPS_HIGHER) | |
5493 | dsll $tempreg,16 | |
5494 | daddiu $tempreg,<sym> (BFD_RELOC_HI16_S) | |
5495 | dsll $tempreg,16 | |
5496 | daddu $tempreg,$tempreg,$breg | |
5497 | <op> $treg,<sym>($tempreg) (BFD_RELOC_LO16) | |
6373ee54 CD |
5498 | |
5499 | If we have 64-bit addresses, as an optimization, for | |
5500 | addresses which are 32-bit constants (e.g. kseg0/kseg1 | |
5501 | addresses) we fall back to the 32-bit address generation | |
78d32a17 MR |
5502 | mechanism since it is more efficient. Note that due to |
5503 | the signed offset used by memory operations, the 32-bit | |
5504 | range is shifted down by 32768 here. This code should | |
6373ee54 CD |
5505 | probably attempt to generate 64-bit constants more |
5506 | efficiently in general. | |
d6bc6245 | 5507 | */ |
6373ee54 CD |
5508 | if (HAVE_64BIT_ADDRESSES |
5509 | && !(offset_expr.X_op == O_constant | |
78d32a17 | 5510 | && IS_SEXT_32BIT_NUM (offset_expr.X_add_number + 0x8000))) |
d6bc6245 TS |
5511 | { |
5512 | p = NULL; | |
5513 | ||
5514 | /* We don't do GP optimization for now because RELAX_ENCODE can't | |
5515 | hold the data for such large chunks. */ | |
5516 | ||
460597ba | 5517 | if (used_at == 0 && ! mips_opts.noat) |
d6bc6245 TS |
5518 | { |
5519 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
5520 | tempreg, (int) BFD_RELOC_MIPS_HIGHEST); | |
5521 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
5522 | AT, (int) BFD_RELOC_HI16_S); | |
5523 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
5524 | tempreg, tempreg, (int) BFD_RELOC_MIPS_HIGHER); | |
5525 | if (breg != 0) | |
2396cfb9 TS |
5526 | macro_build (p, &icnt, (expressionS *) NULL, "daddu", |
5527 | "d,v,t", AT, AT, breg); | |
5528 | macro_build (p, &icnt, (expressionS *) NULL, "dsll32", | |
5529 | "d,w,<", tempreg, tempreg, 0); | |
5530 | macro_build (p, &icnt, (expressionS *) NULL, "daddu", | |
5531 | "d,v,t", tempreg, tempreg, AT); | |
d6bc6245 TS |
5532 | macro_build (p, &icnt, &offset_expr, s, |
5533 | fmt, treg, (int) BFD_RELOC_LO16, tempreg); | |
5534 | used_at = 1; | |
5535 | } | |
5536 | else | |
5537 | { | |
5538 | macro_build (p, &icnt, &offset_expr, "lui", "t,u", | |
5539 | tempreg, (int) BFD_RELOC_MIPS_HIGHEST); | |
5540 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", | |
5541 | tempreg, tempreg, (int) BFD_RELOC_MIPS_HIGHER); | |
2396cfb9 TS |
5542 | macro_build (p, &icnt, (expressionS *) NULL, "dsll", |
5543 | "d,w,<", tempreg, tempreg, 16); | |
d6bc6245 TS |
5544 | macro_build (p, &icnt, &offset_expr, "daddiu", "t,r,j", |
5545 | tempreg, tempreg, (int) BFD_RELOC_HI16_S); | |
2396cfb9 TS |
5546 | macro_build (p, &icnt, (expressionS *) NULL, "dsll", |
5547 | "d,w,<", tempreg, tempreg, 16); | |
d6bc6245 | 5548 | if (breg != 0) |
2396cfb9 TS |
5549 | macro_build (p, &icnt, (expressionS *) NULL, "daddu", |
5550 | "d,v,t", tempreg, tempreg, breg); | |
d6bc6245 TS |
5551 | macro_build (p, &icnt, &offset_expr, s, |
5552 | fmt, treg, (int) BFD_RELOC_LO16, tempreg); | |
5553 | } | |
5554 | ||
5555 | return; | |
5556 | } | |
76b3015f | 5557 | |
252b5132 RH |
5558 | if (breg == 0) |
5559 | { | |
e7d556df | 5560 | if ((valueT) offset_expr.X_add_number > MAX_GPREL_OFFSET |
252b5132 RH |
5561 | || nopic_need_relax (offset_expr.X_add_symbol, 1)) |
5562 | p = NULL; | |
5563 | else | |
5564 | { | |
5565 | frag_grow (20); | |
5566 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, | |
c9914766 TS |
5567 | treg, (int) BFD_RELOC_GPREL16, |
5568 | mips_gp_register); | |
252b5132 RH |
5569 | p = frag_var (rs_machine_dependent, 8, 0, |
5570 | RELAX_ENCODE (4, 8, 0, 4, 0, | |
5571 | (mips_opts.warn_about_macros | |
5572 | || (used_at | |
5573 | && mips_opts.noat))), | |
956cd1d6 | 5574 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
5575 | used_at = 0; |
5576 | } | |
5577 | macro_build_lui (p, &icnt, &offset_expr, tempreg); | |
5578 | if (p != NULL) | |
5579 | p += 4; | |
5580 | macro_build (p, &icnt, &offset_expr, s, fmt, treg, | |
5581 | (int) BFD_RELOC_LO16, tempreg); | |
5582 | } | |
5583 | else | |
5584 | { | |
e7d556df | 5585 | if ((valueT) offset_expr.X_add_number > MAX_GPREL_OFFSET |
252b5132 RH |
5586 | || nopic_need_relax (offset_expr.X_add_symbol, 1)) |
5587 | p = NULL; | |
5588 | else | |
5589 | { | |
5590 | frag_grow (28); | |
5591 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5592 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 5593 | "d,v,t", tempreg, breg, mips_gp_register); |
252b5132 | 5594 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
cdf6fd85 | 5595 | treg, (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
5596 | p = frag_var (rs_machine_dependent, 12, 0, |
5597 | RELAX_ENCODE (8, 12, 0, 8, 0, 0), | |
956cd1d6 | 5598 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
5599 | } |
5600 | macro_build_lui (p, &icnt, &offset_expr, tempreg); | |
5601 | if (p != NULL) | |
5602 | p += 4; | |
5603 | macro_build (p, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5604 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
5605 | "d,v,t", tempreg, tempreg, breg); |
5606 | if (p != NULL) | |
5607 | p += 4; | |
5608 | macro_build (p, &icnt, &offset_expr, s, fmt, treg, | |
5609 | (int) BFD_RELOC_LO16, tempreg); | |
5610 | } | |
5611 | } | |
5612 | else if (mips_pic == SVR4_PIC && ! mips_big_got) | |
5613 | { | |
f9419b05 TS |
5614 | char *p; |
5615 | ||
252b5132 RH |
5616 | /* If this is a reference to an external symbol, we want |
5617 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5618 | nop | |
5619 | <op> $treg,0($tempreg) | |
5620 | Otherwise we want | |
5621 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5622 | nop | |
5623 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5624 | <op> $treg,0($tempreg) | |
5625 | If there is a base register, we add it to $tempreg before | |
5626 | the <op>. If there is a constant, we stick it in the | |
5627 | <op> instruction. We don't handle constants larger than | |
5628 | 16 bits, because we have no way to load the upper 16 bits | |
5629 | (actually, we could handle them for the subset of cases | |
5630 | in which we are not using $at). */ | |
5631 | assert (offset_expr.X_op == O_symbol); | |
5632 | expr1.X_add_number = offset_expr.X_add_number; | |
5633 | offset_expr.X_add_number = 0; | |
5634 | if (expr1.X_add_number < -0x8000 | |
5635 | || expr1.X_add_number >= 0x8000) | |
5636 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
5637 | frag_grow (20); | |
5638 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
c9914766 TS |
5639 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", tempreg, |
5640 | (int) BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 | 5641 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); |
bdaaa2e1 | 5642 | p = frag_var (rs_machine_dependent, 4, 0, |
252b5132 | 5643 | RELAX_ENCODE (0, 4, -8, 0, 0, 0), |
c4e7957c | 5644 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 | 5645 | macro_build (p, &icnt, &offset_expr, |
ca4e0257 | 5646 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
5647 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
5648 | if (breg != 0) | |
5649 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5650 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
5651 | "d,v,t", tempreg, tempreg, breg); |
5652 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, treg, | |
5653 | (int) BFD_RELOC_LO16, tempreg); | |
5654 | } | |
5655 | else if (mips_pic == SVR4_PIC) | |
5656 | { | |
5657 | int gpdel; | |
f9419b05 | 5658 | char *p; |
252b5132 RH |
5659 | |
5660 | /* If this is a reference to an external symbol, we want | |
5661 | lui $tempreg,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
5662 | addu $tempreg,$tempreg,$gp | |
5663 | lw $tempreg,<sym>($tempreg) (BFD_RELOC_MIPS_GOT_LO16) | |
5664 | <op> $treg,0($tempreg) | |
5665 | Otherwise we want | |
5666 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
5667 | nop | |
5668 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_LO16) | |
5669 | <op> $treg,0($tempreg) | |
5670 | If there is a base register, we add it to $tempreg before | |
5671 | the <op>. If there is a constant, we stick it in the | |
5672 | <op> instruction. We don't handle constants larger than | |
5673 | 16 bits, because we have no way to load the upper 16 bits | |
5674 | (actually, we could handle them for the subset of cases | |
438c16b8 TS |
5675 | in which we are not using $at). |
5676 | ||
5677 | For NewABI, we want | |
5678 | lw $tempreg,<sym>($gp) (BFD_RELOC_MIPS_GOT_PAGE) | |
5679 | addiu $tempreg,$tempreg,<sym> (BFD_RELOC_MIPS_GOT_OFST) | |
5680 | <op> $treg,0($tempreg) | |
5681 | */ | |
252b5132 RH |
5682 | assert (offset_expr.X_op == O_symbol); |
5683 | expr1.X_add_number = offset_expr.X_add_number; | |
5684 | offset_expr.X_add_number = 0; | |
5685 | if (expr1.X_add_number < -0x8000 | |
5686 | || expr1.X_add_number >= 0x8000) | |
5687 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
438c16b8 TS |
5688 | if (HAVE_NEWABI) |
5689 | { | |
5690 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
5691 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", | |
5692 | "t,o(b)", tempreg, BFD_RELOC_MIPS_GOT_PAGE, | |
5693 | mips_gp_register); | |
5694 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
5695 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", | |
5696 | "t,r,j", tempreg, tempreg, | |
5697 | BFD_RELOC_MIPS_GOT_OFST); | |
5698 | if (breg != 0) | |
5699 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5700 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", | |
5701 | "d,v,t", tempreg, tempreg, breg); | |
5702 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, treg, | |
5703 | (int) BFD_RELOC_LO16, tempreg); | |
5704 | ||
5705 | if (! used_at) | |
5706 | return; | |
5707 | ||
5708 | break; | |
5709 | } | |
f7ea7ef2 | 5710 | if (reg_needs_delay (mips_gp_register)) |
252b5132 RH |
5711 | gpdel = 4; |
5712 | else | |
5713 | gpdel = 0; | |
5714 | frag_grow (36); | |
5715 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
5716 | tempreg, (int) BFD_RELOC_MIPS_GOT_HI16); | |
5717 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5718 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 5719 | "d,v,t", tempreg, tempreg, mips_gp_register); |
252b5132 | 5720 | macro_build ((char *) NULL, &icnt, &offset_expr, |
ca4e0257 | 5721 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
252b5132 RH |
5722 | "t,o(b)", tempreg, (int) BFD_RELOC_MIPS_GOT_LO16, |
5723 | tempreg); | |
5724 | p = frag_var (rs_machine_dependent, 12 + gpdel, 0, | |
5725 | RELAX_ENCODE (12, 12 + gpdel, gpdel, 8 + gpdel, 0, 0), | |
c4e7957c | 5726 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
5727 | if (gpdel > 0) |
5728 | { | |
5729 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
5730 | p += 4; | |
5731 | } | |
5732 | macro_build (p, &icnt, &offset_expr, | |
ca4e0257 | 5733 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
c9914766 TS |
5734 | "t,o(b)", tempreg, (int) BFD_RELOC_MIPS_GOT16, |
5735 | mips_gp_register); | |
252b5132 RH |
5736 | p += 4; |
5737 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
5738 | p += 4; | |
5739 | macro_build (p, &icnt, &offset_expr, | |
ca4e0257 | 5740 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", |
252b5132 RH |
5741 | "t,r,j", tempreg, tempreg, (int) BFD_RELOC_LO16); |
5742 | if (breg != 0) | |
5743 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5744 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
5745 | "d,v,t", tempreg, tempreg, breg); |
5746 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, treg, | |
5747 | (int) BFD_RELOC_LO16, tempreg); | |
5748 | } | |
5749 | else if (mips_pic == EMBEDDED_PIC) | |
5750 | { | |
5751 | /* If there is no base register, we want | |
cdf6fd85 | 5752 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
252b5132 RH |
5753 | If there is a base register, we want |
5754 | addu $tempreg,$breg,$gp | |
cdf6fd85 | 5755 | <op> $treg,<sym>($tempreg) (BFD_RELOC_GPREL16) |
252b5132 RH |
5756 | */ |
5757 | assert (offset_expr.X_op == O_symbol); | |
5758 | if (breg == 0) | |
5759 | { | |
5760 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, | |
c9914766 | 5761 | treg, (int) BFD_RELOC_GPREL16, mips_gp_register); |
252b5132 RH |
5762 | used_at = 0; |
5763 | } | |
5764 | else | |
5765 | { | |
5766 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 5767 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 5768 | "d,v,t", tempreg, breg, mips_gp_register); |
252b5132 | 5769 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
cdf6fd85 | 5770 | treg, (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
5771 | } |
5772 | } | |
5773 | else | |
5774 | abort (); | |
5775 | ||
5776 | if (! used_at) | |
5777 | return; | |
5778 | ||
5779 | break; | |
5780 | ||
5781 | case M_LI: | |
5782 | case M_LI_S: | |
5783 | load_register (&icnt, treg, &imm_expr, 0); | |
5784 | return; | |
5785 | ||
5786 | case M_DLI: | |
5787 | load_register (&icnt, treg, &imm_expr, 1); | |
5788 | return; | |
5789 | ||
5790 | case M_LI_SS: | |
5791 | if (imm_expr.X_op == O_constant) | |
5792 | { | |
5793 | load_register (&icnt, AT, &imm_expr, 0); | |
5794 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5795 | "mtc1", "t,G", AT, treg); | |
5796 | break; | |
5797 | } | |
5798 | else | |
5799 | { | |
5800 | assert (offset_expr.X_op == O_symbol | |
5801 | && strcmp (segment_name (S_GET_SEGMENT | |
5802 | (offset_expr.X_add_symbol)), | |
5803 | ".lit4") == 0 | |
5804 | && offset_expr.X_add_number == 0); | |
5805 | macro_build ((char *) NULL, &icnt, &offset_expr, "lwc1", "T,o(b)", | |
c9914766 | 5806 | treg, (int) BFD_RELOC_MIPS_LITERAL, mips_gp_register); |
252b5132 RH |
5807 | return; |
5808 | } | |
5809 | ||
5810 | case M_LI_D: | |
ca4e0257 RS |
5811 | /* Check if we have a constant in IMM_EXPR. If the GPRs are 64 bits |
5812 | wide, IMM_EXPR is the entire value. Otherwise IMM_EXPR is the high | |
5813 | order 32 bits of the value and the low order 32 bits are either | |
5814 | zero or in OFFSET_EXPR. */ | |
252b5132 RH |
5815 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
5816 | { | |
ca4e0257 | 5817 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
5818 | load_register (&icnt, treg, &imm_expr, 1); |
5819 | else | |
5820 | { | |
5821 | int hreg, lreg; | |
5822 | ||
5823 | if (target_big_endian) | |
5824 | { | |
5825 | hreg = treg; | |
5826 | lreg = treg + 1; | |
5827 | } | |
5828 | else | |
5829 | { | |
5830 | hreg = treg + 1; | |
5831 | lreg = treg; | |
5832 | } | |
5833 | ||
5834 | if (hreg <= 31) | |
5835 | load_register (&icnt, hreg, &imm_expr, 0); | |
5836 | if (lreg <= 31) | |
5837 | { | |
5838 | if (offset_expr.X_op == O_absent) | |
ea1fb5dc | 5839 | move_register (&icnt, lreg, 0); |
252b5132 RH |
5840 | else |
5841 | { | |
5842 | assert (offset_expr.X_op == O_constant); | |
5843 | load_register (&icnt, lreg, &offset_expr, 0); | |
5844 | } | |
5845 | } | |
5846 | } | |
5847 | return; | |
5848 | } | |
5849 | ||
5850 | /* We know that sym is in the .rdata section. First we get the | |
5851 | upper 16 bits of the address. */ | |
5852 | if (mips_pic == NO_PIC) | |
5853 | { | |
956cd1d6 | 5854 | macro_build_lui (NULL, &icnt, &offset_expr, AT); |
252b5132 RH |
5855 | } |
5856 | else if (mips_pic == SVR4_PIC) | |
5857 | { | |
5858 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
ca4e0257 | 5859 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
c9914766 TS |
5860 | "t,o(b)", AT, (int) BFD_RELOC_MIPS_GOT16, |
5861 | mips_gp_register); | |
252b5132 RH |
5862 | } |
5863 | else if (mips_pic == EMBEDDED_PIC) | |
5864 | { | |
5865 | /* For embedded PIC we pick up the entire address off $gp in | |
5866 | a single instruction. */ | |
5867 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
c9914766 TS |
5868 | HAVE_32BIT_ADDRESSES ? "addiu" : "daddiu", "t,r,j", AT, |
5869 | mips_gp_register, (int) BFD_RELOC_GPREL16); | |
252b5132 RH |
5870 | offset_expr.X_op = O_constant; |
5871 | offset_expr.X_add_number = 0; | |
5872 | } | |
5873 | else | |
5874 | abort (); | |
bdaaa2e1 | 5875 | |
252b5132 | 5876 | /* Now we load the register(s). */ |
ca4e0257 | 5877 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
5878 | macro_build ((char *) NULL, &icnt, &offset_expr, "ld", "t,o(b)", |
5879 | treg, (int) BFD_RELOC_LO16, AT); | |
5880 | else | |
5881 | { | |
5882 | macro_build ((char *) NULL, &icnt, &offset_expr, "lw", "t,o(b)", | |
5883 | treg, (int) BFD_RELOC_LO16, AT); | |
f9419b05 | 5884 | if (treg != RA) |
252b5132 RH |
5885 | { |
5886 | /* FIXME: How in the world do we deal with the possible | |
5887 | overflow here? */ | |
5888 | offset_expr.X_add_number += 4; | |
5889 | macro_build ((char *) NULL, &icnt, &offset_expr, "lw", "t,o(b)", | |
5890 | treg + 1, (int) BFD_RELOC_LO16, AT); | |
5891 | } | |
5892 | } | |
5893 | ||
5894 | /* To avoid confusion in tc_gen_reloc, we must ensure that this | |
5895 | does not become a variant frag. */ | |
5896 | frag_wane (frag_now); | |
5897 | frag_new (0); | |
5898 | ||
5899 | break; | |
5900 | ||
5901 | case M_LI_DD: | |
ca4e0257 RS |
5902 | /* Check if we have a constant in IMM_EXPR. If the FPRs are 64 bits |
5903 | wide, IMM_EXPR is the entire value and the GPRs are known to be 64 | |
5904 | bits wide as well. Otherwise IMM_EXPR is the high order 32 bits of | |
5905 | the value and the low order 32 bits are either zero or in | |
5906 | OFFSET_EXPR. */ | |
252b5132 RH |
5907 | if (imm_expr.X_op == O_constant || imm_expr.X_op == O_big) |
5908 | { | |
ca4e0257 RS |
5909 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_FPRS); |
5910 | if (HAVE_64BIT_FPRS) | |
5911 | { | |
5912 | assert (HAVE_64BIT_GPRS); | |
5913 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5914 | "dmtc1", "t,S", AT, treg); | |
5915 | } | |
252b5132 RH |
5916 | else |
5917 | { | |
5918 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5919 | "mtc1", "t,G", AT, treg + 1); | |
5920 | if (offset_expr.X_op == O_absent) | |
5921 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5922 | "mtc1", "t,G", 0, treg); | |
5923 | else | |
5924 | { | |
5925 | assert (offset_expr.X_op == O_constant); | |
5926 | load_register (&icnt, AT, &offset_expr, 0); | |
5927 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
5928 | "mtc1", "t,G", AT, treg); | |
5929 | } | |
5930 | } | |
5931 | break; | |
5932 | } | |
5933 | ||
5934 | assert (offset_expr.X_op == O_symbol | |
5935 | && offset_expr.X_add_number == 0); | |
5936 | s = segment_name (S_GET_SEGMENT (offset_expr.X_add_symbol)); | |
5937 | if (strcmp (s, ".lit8") == 0) | |
5938 | { | |
e7af610e | 5939 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
5940 | { |
5941 | macro_build ((char *) NULL, &icnt, &offset_expr, "ldc1", | |
c9914766 TS |
5942 | "T,o(b)", treg, (int) BFD_RELOC_MIPS_LITERAL, |
5943 | mips_gp_register); | |
252b5132 RH |
5944 | return; |
5945 | } | |
c9914766 | 5946 | breg = mips_gp_register; |
252b5132 RH |
5947 | r = BFD_RELOC_MIPS_LITERAL; |
5948 | goto dob; | |
5949 | } | |
5950 | else | |
5951 | { | |
5952 | assert (strcmp (s, RDATA_SECTION_NAME) == 0); | |
5953 | if (mips_pic == SVR4_PIC) | |
5954 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
ca4e0257 | 5955 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
c9914766 TS |
5956 | "t,o(b)", AT, (int) BFD_RELOC_MIPS_GOT16, |
5957 | mips_gp_register); | |
252b5132 RH |
5958 | else |
5959 | { | |
5960 | /* FIXME: This won't work for a 64 bit address. */ | |
956cd1d6 | 5961 | macro_build_lui (NULL, &icnt, &offset_expr, AT); |
252b5132 | 5962 | } |
bdaaa2e1 | 5963 | |
e7af610e | 5964 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
5965 | { |
5966 | macro_build ((char *) NULL, &icnt, &offset_expr, "ldc1", | |
5967 | "T,o(b)", treg, (int) BFD_RELOC_LO16, AT); | |
5968 | ||
5969 | /* To avoid confusion in tc_gen_reloc, we must ensure | |
5970 | that this does not become a variant frag. */ | |
5971 | frag_wane (frag_now); | |
5972 | frag_new (0); | |
5973 | ||
5974 | break; | |
5975 | } | |
5976 | breg = AT; | |
5977 | r = BFD_RELOC_LO16; | |
5978 | goto dob; | |
5979 | } | |
5980 | ||
5981 | case M_L_DOB: | |
ec68c924 | 5982 | if (mips_arch == CPU_R4650) |
252b5132 RH |
5983 | { |
5984 | as_bad (_("opcode not supported on this processor")); | |
5985 | return; | |
5986 | } | |
5987 | /* Even on a big endian machine $fn comes before $fn+1. We have | |
5988 | to adjust when loading from memory. */ | |
5989 | r = BFD_RELOC_LO16; | |
5990 | dob: | |
e7af610e | 5991 | assert (mips_opts.isa == ISA_MIPS1); |
252b5132 RH |
5992 | macro_build ((char *) NULL, &icnt, &offset_expr, "lwc1", "T,o(b)", |
5993 | target_big_endian ? treg + 1 : treg, | |
5994 | (int) r, breg); | |
5995 | /* FIXME: A possible overflow which I don't know how to deal | |
5996 | with. */ | |
5997 | offset_expr.X_add_number += 4; | |
5998 | macro_build ((char *) NULL, &icnt, &offset_expr, "lwc1", "T,o(b)", | |
5999 | target_big_endian ? treg : treg + 1, | |
6000 | (int) r, breg); | |
6001 | ||
6002 | /* To avoid confusion in tc_gen_reloc, we must ensure that this | |
6003 | does not become a variant frag. */ | |
6004 | frag_wane (frag_now); | |
6005 | frag_new (0); | |
6006 | ||
6007 | if (breg != AT) | |
6008 | return; | |
6009 | break; | |
6010 | ||
6011 | case M_L_DAB: | |
6012 | /* | |
6013 | * The MIPS assembler seems to check for X_add_number not | |
6014 | * being double aligned and generating: | |
6015 | * lui at,%hi(foo+1) | |
6016 | * addu at,at,v1 | |
6017 | * addiu at,at,%lo(foo+1) | |
6018 | * lwc1 f2,0(at) | |
6019 | * lwc1 f3,4(at) | |
6020 | * But, the resulting address is the same after relocation so why | |
6021 | * generate the extra instruction? | |
6022 | */ | |
ec68c924 | 6023 | if (mips_arch == CPU_R4650) |
252b5132 RH |
6024 | { |
6025 | as_bad (_("opcode not supported on this processor")); | |
6026 | return; | |
6027 | } | |
bdaaa2e1 | 6028 | /* Itbl support may require additional care here. */ |
252b5132 | 6029 | coproc = 1; |
e7af610e | 6030 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
6031 | { |
6032 | s = "ldc1"; | |
6033 | goto ld; | |
6034 | } | |
6035 | ||
6036 | s = "lwc1"; | |
6037 | fmt = "T,o(b)"; | |
6038 | goto ldd_std; | |
6039 | ||
6040 | case M_S_DAB: | |
ec68c924 | 6041 | if (mips_arch == CPU_R4650) |
252b5132 RH |
6042 | { |
6043 | as_bad (_("opcode not supported on this processor")); | |
6044 | return; | |
6045 | } | |
6046 | ||
e7af610e | 6047 | if (mips_opts.isa != ISA_MIPS1) |
252b5132 RH |
6048 | { |
6049 | s = "sdc1"; | |
6050 | goto st; | |
6051 | } | |
6052 | ||
6053 | s = "swc1"; | |
6054 | fmt = "T,o(b)"; | |
bdaaa2e1 | 6055 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6056 | coproc = 1; |
6057 | goto ldd_std; | |
6058 | ||
6059 | case M_LD_AB: | |
ca4e0257 | 6060 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
6061 | { |
6062 | s = "ld"; | |
6063 | goto ld; | |
6064 | } | |
6065 | ||
6066 | s = "lw"; | |
6067 | fmt = "t,o(b)"; | |
6068 | goto ldd_std; | |
6069 | ||
6070 | case M_SD_AB: | |
ca4e0257 | 6071 | if (HAVE_64BIT_GPRS) |
252b5132 RH |
6072 | { |
6073 | s = "sd"; | |
6074 | goto st; | |
6075 | } | |
6076 | ||
6077 | s = "sw"; | |
6078 | fmt = "t,o(b)"; | |
6079 | ||
6080 | ldd_std: | |
afdbd6d0 CD |
6081 | /* We do _not_ bother to allow embedded PIC (symbol-local_symbol) |
6082 | loads for the case of doing a pair of loads to simulate an 'ld'. | |
6083 | This is not currently done by the compiler, and assembly coders | |
6084 | writing embedded-pic code can cope. */ | |
6085 | ||
252b5132 RH |
6086 | if (offset_expr.X_op != O_symbol |
6087 | && offset_expr.X_op != O_constant) | |
6088 | { | |
6089 | as_bad (_("expression too complex")); | |
6090 | offset_expr.X_op = O_constant; | |
6091 | } | |
6092 | ||
6093 | /* Even on a big endian machine $fn comes before $fn+1. We have | |
6094 | to adjust when loading from memory. We set coproc if we must | |
6095 | load $fn+1 first. */ | |
bdaaa2e1 | 6096 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6097 | if (! target_big_endian) |
6098 | coproc = 0; | |
6099 | ||
6100 | if (mips_pic == NO_PIC | |
6101 | || offset_expr.X_op == O_constant) | |
6102 | { | |
f9419b05 TS |
6103 | char *p; |
6104 | ||
252b5132 | 6105 | /* If this is a reference to a GP relative symbol, we want |
cdf6fd85 TS |
6106 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
6107 | <op> $treg+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
6108 | If we have a base register, we use this |
6109 | addu $at,$breg,$gp | |
cdf6fd85 TS |
6110 | <op> $treg,<sym>($at) (BFD_RELOC_GPREL16) |
6111 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
6112 | If this is not a GP relative symbol, we want |
6113 | lui $at,<sym> (BFD_RELOC_HI16_S) | |
6114 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
6115 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
6116 | If there is a base register, we add it to $at after the | |
6117 | lui instruction. If there is a constant, we always use | |
6118 | the last case. */ | |
e7d556df | 6119 | if ((valueT) offset_expr.X_add_number > MAX_GPREL_OFFSET |
252b5132 RH |
6120 | || nopic_need_relax (offset_expr.X_add_symbol, 1)) |
6121 | { | |
6122 | p = NULL; | |
6123 | used_at = 1; | |
6124 | } | |
6125 | else | |
6126 | { | |
6127 | int off; | |
6128 | ||
6129 | if (breg == 0) | |
6130 | { | |
6131 | frag_grow (28); | |
c9914766 | 6132 | tempreg = mips_gp_register; |
252b5132 RH |
6133 | off = 0; |
6134 | used_at = 0; | |
6135 | } | |
6136 | else | |
6137 | { | |
6138 | frag_grow (36); | |
6139 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 6140 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 6141 | "d,v,t", AT, breg, mips_gp_register); |
252b5132 RH |
6142 | tempreg = AT; |
6143 | off = 4; | |
6144 | used_at = 1; | |
6145 | } | |
6146 | ||
beae10d5 | 6147 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6148 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
6149 | coproc ? treg + 1 : treg, | |
cdf6fd85 | 6150 | (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
6151 | offset_expr.X_add_number += 4; |
6152 | ||
6153 | /* Set mips_optimize to 2 to avoid inserting an | |
6154 | undesired nop. */ | |
6155 | hold_mips_optimize = mips_optimize; | |
6156 | mips_optimize = 2; | |
beae10d5 | 6157 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6158 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
6159 | coproc ? treg : treg + 1, | |
cdf6fd85 | 6160 | (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
6161 | mips_optimize = hold_mips_optimize; |
6162 | ||
6163 | p = frag_var (rs_machine_dependent, 12 + off, 0, | |
6164 | RELAX_ENCODE (8 + off, 12 + off, 0, 4 + off, 1, | |
6165 | used_at && mips_opts.noat), | |
956cd1d6 | 6166 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
6167 | |
6168 | /* We just generated two relocs. When tc_gen_reloc | |
6169 | handles this case, it will skip the first reloc and | |
6170 | handle the second. The second reloc already has an | |
6171 | extra addend of 4, which we added above. We must | |
6172 | subtract it out, and then subtract another 4 to make | |
6173 | the first reloc come out right. The second reloc | |
6174 | will come out right because we are going to add 4 to | |
6175 | offset_expr when we build its instruction below. | |
6176 | ||
6177 | If we have a symbol, then we don't want to include | |
6178 | the offset, because it will wind up being included | |
6179 | when we generate the reloc. */ | |
6180 | ||
6181 | if (offset_expr.X_op == O_constant) | |
6182 | offset_expr.X_add_number -= 8; | |
6183 | else | |
6184 | { | |
6185 | offset_expr.X_add_number = -4; | |
6186 | offset_expr.X_op = O_constant; | |
6187 | } | |
6188 | } | |
6189 | macro_build_lui (p, &icnt, &offset_expr, AT); | |
6190 | if (p != NULL) | |
6191 | p += 4; | |
6192 | if (breg != 0) | |
6193 | { | |
6194 | macro_build (p, &icnt, (expressionS *) NULL, | |
ca4e0257 | 6195 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
6196 | "d,v,t", AT, breg, AT); |
6197 | if (p != NULL) | |
6198 | p += 4; | |
6199 | } | |
beae10d5 | 6200 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6201 | macro_build (p, &icnt, &offset_expr, s, fmt, |
6202 | coproc ? treg + 1 : treg, | |
6203 | (int) BFD_RELOC_LO16, AT); | |
6204 | if (p != NULL) | |
6205 | p += 4; | |
6206 | /* FIXME: How do we handle overflow here? */ | |
6207 | offset_expr.X_add_number += 4; | |
beae10d5 | 6208 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6209 | macro_build (p, &icnt, &offset_expr, s, fmt, |
6210 | coproc ? treg : treg + 1, | |
6211 | (int) BFD_RELOC_LO16, AT); | |
bdaaa2e1 | 6212 | } |
252b5132 RH |
6213 | else if (mips_pic == SVR4_PIC && ! mips_big_got) |
6214 | { | |
6215 | int off; | |
6216 | ||
6217 | /* If this is a reference to an external symbol, we want | |
6218 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6219 | nop | |
6220 | <op> $treg,0($at) | |
6221 | <op> $treg+1,4($at) | |
6222 | Otherwise we want | |
6223 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6224 | nop | |
6225 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
6226 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
6227 | If there is a base register we add it to $at before the | |
6228 | lwc1 instructions. If there is a constant we include it | |
6229 | in the lwc1 instructions. */ | |
6230 | used_at = 1; | |
6231 | expr1.X_add_number = offset_expr.X_add_number; | |
6232 | offset_expr.X_add_number = 0; | |
6233 | if (expr1.X_add_number < -0x8000 | |
6234 | || expr1.X_add_number >= 0x8000 - 4) | |
6235 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
6236 | if (breg == 0) | |
6237 | off = 0; | |
6238 | else | |
6239 | off = 4; | |
6240 | frag_grow (24 + off); | |
6241 | macro_build ((char *) NULL, &icnt, &offset_expr, | |
c9914766 TS |
6242 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", "t,o(b)", AT, |
6243 | (int) BFD_RELOC_MIPS_GOT16, mips_gp_register); | |
252b5132 RH |
6244 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); |
6245 | if (breg != 0) | |
6246 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 6247 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 | 6248 | "d,v,t", AT, breg, AT); |
beae10d5 | 6249 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6250 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, |
6251 | coproc ? treg + 1 : treg, | |
6252 | (int) BFD_RELOC_LO16, AT); | |
6253 | expr1.X_add_number += 4; | |
6254 | ||
6255 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
6256 | nop. */ | |
6257 | hold_mips_optimize = mips_optimize; | |
6258 | mips_optimize = 2; | |
beae10d5 | 6259 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6260 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, |
6261 | coproc ? treg : treg + 1, | |
6262 | (int) BFD_RELOC_LO16, AT); | |
6263 | mips_optimize = hold_mips_optimize; | |
6264 | ||
6265 | (void) frag_var (rs_machine_dependent, 0, 0, | |
6266 | RELAX_ENCODE (0, 0, -16 - off, -8, 1, 0), | |
c4e7957c | 6267 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
6268 | } |
6269 | else if (mips_pic == SVR4_PIC) | |
6270 | { | |
6271 | int gpdel, off; | |
f9419b05 | 6272 | char *p; |
252b5132 RH |
6273 | |
6274 | /* If this is a reference to an external symbol, we want | |
6275 | lui $at,<sym> (BFD_RELOC_MIPS_GOT_HI16) | |
6276 | addu $at,$at,$gp | |
6277 | lw $at,<sym>($at) (BFD_RELOC_MIPS_GOT_LO16) | |
6278 | nop | |
6279 | <op> $treg,0($at) | |
6280 | <op> $treg+1,4($at) | |
6281 | Otherwise we want | |
6282 | lw $at,<sym>($gp) (BFD_RELOC_MIPS_GOT16) | |
6283 | nop | |
6284 | <op> $treg,<sym>($at) (BFD_RELOC_LO16) | |
6285 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_LO16) | |
6286 | If there is a base register we add it to $at before the | |
6287 | lwc1 instructions. If there is a constant we include it | |
6288 | in the lwc1 instructions. */ | |
6289 | used_at = 1; | |
6290 | expr1.X_add_number = offset_expr.X_add_number; | |
6291 | offset_expr.X_add_number = 0; | |
6292 | if (expr1.X_add_number < -0x8000 | |
6293 | || expr1.X_add_number >= 0x8000 - 4) | |
6294 | as_bad (_("PIC code offset overflow (max 16 signed bits)")); | |
c9914766 | 6295 | if (reg_needs_delay (mips_gp_register)) |
252b5132 RH |
6296 | gpdel = 4; |
6297 | else | |
6298 | gpdel = 0; | |
6299 | if (breg == 0) | |
6300 | off = 0; | |
6301 | else | |
6302 | off = 4; | |
6303 | frag_grow (56); | |
6304 | macro_build ((char *) NULL, &icnt, &offset_expr, "lui", "t,u", | |
6305 | AT, (int) BFD_RELOC_MIPS_GOT_HI16); | |
6306 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 6307 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 6308 | "d,v,t", AT, AT, mips_gp_register); |
252b5132 | 6309 | macro_build ((char *) NULL, &icnt, &offset_expr, |
ca4e0257 | 6310 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
252b5132 RH |
6311 | "t,o(b)", AT, (int) BFD_RELOC_MIPS_GOT_LO16, AT); |
6312 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); | |
6313 | if (breg != 0) | |
6314 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 6315 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 | 6316 | "d,v,t", AT, breg, AT); |
beae10d5 | 6317 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6318 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, |
6319 | coproc ? treg + 1 : treg, | |
6320 | (int) BFD_RELOC_LO16, AT); | |
6321 | expr1.X_add_number += 4; | |
6322 | ||
6323 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
6324 | nop. */ | |
6325 | hold_mips_optimize = mips_optimize; | |
6326 | mips_optimize = 2; | |
beae10d5 | 6327 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6328 | macro_build ((char *) NULL, &icnt, &expr1, s, fmt, |
6329 | coproc ? treg : treg + 1, | |
6330 | (int) BFD_RELOC_LO16, AT); | |
6331 | mips_optimize = hold_mips_optimize; | |
6332 | expr1.X_add_number -= 4; | |
6333 | ||
6334 | p = frag_var (rs_machine_dependent, 16 + gpdel + off, 0, | |
6335 | RELAX_ENCODE (24 + off, 16 + gpdel + off, gpdel, | |
6336 | 8 + gpdel + off, 1, 0), | |
c4e7957c | 6337 | offset_expr.X_add_symbol, 0, NULL); |
252b5132 RH |
6338 | if (gpdel > 0) |
6339 | { | |
6340 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
6341 | p += 4; | |
6342 | } | |
6343 | macro_build (p, &icnt, &offset_expr, | |
ca4e0257 | 6344 | HAVE_32BIT_ADDRESSES ? "lw" : "ld", |
c9914766 TS |
6345 | "t,o(b)", AT, (int) BFD_RELOC_MIPS_GOT16, |
6346 | mips_gp_register); | |
252b5132 RH |
6347 | p += 4; |
6348 | macro_build (p, &icnt, (expressionS *) NULL, "nop", ""); | |
6349 | p += 4; | |
6350 | if (breg != 0) | |
6351 | { | |
6352 | macro_build (p, &icnt, (expressionS *) NULL, | |
ca4e0257 | 6353 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
6354 | "d,v,t", AT, breg, AT); |
6355 | p += 4; | |
6356 | } | |
beae10d5 | 6357 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6358 | macro_build (p, &icnt, &expr1, s, fmt, |
6359 | coproc ? treg + 1 : treg, | |
6360 | (int) BFD_RELOC_LO16, AT); | |
6361 | p += 4; | |
6362 | expr1.X_add_number += 4; | |
6363 | ||
6364 | /* Set mips_optimize to 2 to avoid inserting an undesired | |
6365 | nop. */ | |
6366 | hold_mips_optimize = mips_optimize; | |
6367 | mips_optimize = 2; | |
beae10d5 | 6368 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6369 | macro_build (p, &icnt, &expr1, s, fmt, |
6370 | coproc ? treg : treg + 1, | |
6371 | (int) BFD_RELOC_LO16, AT); | |
6372 | mips_optimize = hold_mips_optimize; | |
6373 | } | |
6374 | else if (mips_pic == EMBEDDED_PIC) | |
6375 | { | |
6376 | /* If there is no base register, we use | |
cdf6fd85 TS |
6377 | <op> $treg,<sym>($gp) (BFD_RELOC_GPREL16) |
6378 | <op> $treg+1,<sym>+4($gp) (BFD_RELOC_GPREL16) | |
252b5132 RH |
6379 | If we have a base register, we use |
6380 | addu $at,$breg,$gp | |
cdf6fd85 TS |
6381 | <op> $treg,<sym>($at) (BFD_RELOC_GPREL16) |
6382 | <op> $treg+1,<sym>+4($at) (BFD_RELOC_GPREL16) | |
252b5132 RH |
6383 | */ |
6384 | if (breg == 0) | |
6385 | { | |
c9914766 | 6386 | tempreg = mips_gp_register; |
252b5132 RH |
6387 | used_at = 0; |
6388 | } | |
6389 | else | |
6390 | { | |
6391 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 6392 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 6393 | "d,v,t", AT, breg, mips_gp_register); |
252b5132 RH |
6394 | tempreg = AT; |
6395 | used_at = 1; | |
6396 | } | |
6397 | ||
beae10d5 | 6398 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6399 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
6400 | coproc ? treg + 1 : treg, | |
cdf6fd85 | 6401 | (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 | 6402 | offset_expr.X_add_number += 4; |
beae10d5 | 6403 | /* Itbl support may require additional care here. */ |
252b5132 RH |
6404 | macro_build ((char *) NULL, &icnt, &offset_expr, s, fmt, |
6405 | coproc ? treg : treg + 1, | |
cdf6fd85 | 6406 | (int) BFD_RELOC_GPREL16, tempreg); |
252b5132 RH |
6407 | } |
6408 | else | |
6409 | abort (); | |
6410 | ||
6411 | if (! used_at) | |
6412 | return; | |
6413 | ||
6414 | break; | |
6415 | ||
6416 | case M_LD_OB: | |
6417 | s = "lw"; | |
6418 | goto sd_ob; | |
6419 | case M_SD_OB: | |
6420 | s = "sw"; | |
6421 | sd_ob: | |
ca4e0257 | 6422 | assert (HAVE_32BIT_ADDRESSES); |
252b5132 RH |
6423 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "t,o(b)", treg, |
6424 | (int) BFD_RELOC_LO16, breg); | |
6425 | offset_expr.X_add_number += 4; | |
6426 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "t,o(b)", treg + 1, | |
6427 | (int) BFD_RELOC_LO16, breg); | |
6428 | return; | |
6429 | ||
6430 | /* New code added to support COPZ instructions. | |
6431 | This code builds table entries out of the macros in mip_opcodes. | |
6432 | R4000 uses interlocks to handle coproc delays. | |
6433 | Other chips (like the R3000) require nops to be inserted for delays. | |
6434 | ||
f72c8c98 | 6435 | FIXME: Currently, we require that the user handle delays. |
252b5132 RH |
6436 | In order to fill delay slots for non-interlocked chips, |
6437 | we must have a way to specify delays based on the coprocessor. | |
6438 | Eg. 4 cycles if load coproc reg from memory, 1 if in cache, etc. | |
6439 | What are the side-effects of the cop instruction? | |
6440 | What cache support might we have and what are its effects? | |
6441 | Both coprocessor & memory require delays. how long??? | |
bdaaa2e1 | 6442 | What registers are read/set/modified? |
252b5132 RH |
6443 | |
6444 | If an itbl is provided to interpret cop instructions, | |
bdaaa2e1 | 6445 | this knowledge can be encoded in the itbl spec. */ |
252b5132 RH |
6446 | |
6447 | case M_COP0: | |
6448 | s = "c0"; | |
6449 | goto copz; | |
6450 | case M_COP1: | |
6451 | s = "c1"; | |
6452 | goto copz; | |
6453 | case M_COP2: | |
6454 | s = "c2"; | |
6455 | goto copz; | |
6456 | case M_COP3: | |
6457 | s = "c3"; | |
6458 | copz: | |
6459 | /* For now we just do C (same as Cz). The parameter will be | |
6460 | stored in insn_opcode by mips_ip. */ | |
6461 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "C", | |
6462 | ip->insn_opcode); | |
6463 | return; | |
6464 | ||
ea1fb5dc RS |
6465 | case M_MOVE: |
6466 | move_register (&icnt, dreg, sreg); | |
6467 | return; | |
6468 | ||
252b5132 RH |
6469 | #ifdef LOSING_COMPILER |
6470 | default: | |
6471 | /* Try and see if this is a new itbl instruction. | |
6472 | This code builds table entries out of the macros in mip_opcodes. | |
6473 | FIXME: For now we just assemble the expression and pass it's | |
6474 | value along as a 32-bit immediate. | |
bdaaa2e1 | 6475 | We may want to have the assembler assemble this value, |
252b5132 RH |
6476 | so that we gain the assembler's knowledge of delay slots, |
6477 | symbols, etc. | |
6478 | Would it be more efficient to use mask (id) here? */ | |
bdaaa2e1 | 6479 | if (itbl_have_entries |
252b5132 | 6480 | && (immed_expr = itbl_assemble (ip->insn_mo->name, ""))) |
beae10d5 | 6481 | { |
252b5132 RH |
6482 | s = ip->insn_mo->name; |
6483 | s2 = "cop3"; | |
6484 | coproc = ITBL_DECODE_PNUM (immed_expr);; | |
6485 | macro_build ((char *) NULL, &icnt, &immed_expr, s, "C"); | |
6486 | return; | |
beae10d5 | 6487 | } |
252b5132 RH |
6488 | macro2 (ip); |
6489 | return; | |
6490 | } | |
6491 | if (mips_opts.noat) | |
6492 | as_warn (_("Macro used $at after \".set noat\"")); | |
6493 | } | |
bdaaa2e1 | 6494 | |
252b5132 RH |
6495 | static void |
6496 | macro2 (ip) | |
6497 | struct mips_cl_insn *ip; | |
6498 | { | |
6499 | register int treg, sreg, dreg, breg; | |
6500 | int tempreg; | |
6501 | int mask; | |
6502 | int icnt = 0; | |
6503 | int used_at; | |
6504 | expressionS expr1; | |
6505 | const char *s; | |
6506 | const char *s2; | |
6507 | const char *fmt; | |
6508 | int likely = 0; | |
6509 | int dbl = 0; | |
6510 | int coproc = 0; | |
6511 | int lr = 0; | |
6512 | int imm = 0; | |
6513 | int off; | |
6514 | offsetT maxnum; | |
6515 | bfd_reloc_code_real_type r; | |
6516 | char *p; | |
bdaaa2e1 | 6517 | |
252b5132 RH |
6518 | treg = (ip->insn_opcode >> 16) & 0x1f; |
6519 | dreg = (ip->insn_opcode >> 11) & 0x1f; | |
6520 | sreg = breg = (ip->insn_opcode >> 21) & 0x1f; | |
6521 | mask = ip->insn_mo->mask; | |
bdaaa2e1 | 6522 | |
252b5132 RH |
6523 | expr1.X_op = O_constant; |
6524 | expr1.X_op_symbol = NULL; | |
6525 | expr1.X_add_symbol = NULL; | |
6526 | expr1.X_add_number = 1; | |
bdaaa2e1 | 6527 | |
252b5132 RH |
6528 | switch (mask) |
6529 | { | |
6530 | #endif /* LOSING_COMPILER */ | |
6531 | ||
6532 | case M_DMUL: | |
6533 | dbl = 1; | |
6534 | case M_MUL: | |
2396cfb9 TS |
6535 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
6536 | dbl ? "dmultu" : "multu", "s,t", sreg, treg); | |
6537 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "d", | |
6538 | dreg); | |
252b5132 RH |
6539 | return; |
6540 | ||
6541 | case M_DMUL_I: | |
6542 | dbl = 1; | |
6543 | case M_MUL_I: | |
6544 | /* The MIPS assembler some times generates shifts and adds. I'm | |
6545 | not trying to be that fancy. GCC should do this for us | |
6546 | anyway. */ | |
6547 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 | 6548 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 6549 | dbl ? "dmult" : "mult", "s,t", sreg, AT); |
2396cfb9 TS |
6550 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "d", |
6551 | dreg); | |
252b5132 RH |
6552 | break; |
6553 | ||
6554 | case M_DMULO_I: | |
6555 | dbl = 1; | |
6556 | case M_MULO_I: | |
6557 | imm = 1; | |
6558 | goto do_mulo; | |
6559 | ||
6560 | case M_DMULO: | |
6561 | dbl = 1; | |
6562 | case M_MULO: | |
6563 | do_mulo: | |
6564 | mips_emit_delays (true); | |
6565 | ++mips_opts.noreorder; | |
6566 | mips_any_noreorder = 1; | |
6567 | if (imm) | |
6568 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 | 6569 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 6570 | dbl ? "dmult" : "mult", "s,t", sreg, imm ? AT : treg); |
2396cfb9 TS |
6571 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "d", |
6572 | dreg); | |
6573 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
f9419b05 | 6574 | dbl ? "dsra32" : "sra", "d,w,<", dreg, dreg, RA); |
2396cfb9 TS |
6575 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mfhi", "d", |
6576 | AT); | |
252b5132 | 6577 | if (mips_trap) |
9bd7d936 MR |
6578 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "tne", |
6579 | "s,t,q", dreg, AT, 6); | |
252b5132 RH |
6580 | else |
6581 | { | |
6582 | expr1.X_add_number = 8; | |
2396cfb9 TS |
6583 | macro_build ((char *) NULL, &icnt, &expr1, "beq", "s,t,p", dreg, |
6584 | AT); | |
6585 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", "", | |
6586 | 0); | |
6587 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", | |
6588 | "c", 6); | |
252b5132 RH |
6589 | } |
6590 | --mips_opts.noreorder; | |
2396cfb9 | 6591 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "d", dreg); |
252b5132 RH |
6592 | break; |
6593 | ||
6594 | case M_DMULOU_I: | |
6595 | dbl = 1; | |
6596 | case M_MULOU_I: | |
6597 | imm = 1; | |
6598 | goto do_mulou; | |
6599 | ||
6600 | case M_DMULOU: | |
6601 | dbl = 1; | |
6602 | case M_MULOU: | |
6603 | do_mulou: | |
6604 | mips_emit_delays (true); | |
6605 | ++mips_opts.noreorder; | |
6606 | mips_any_noreorder = 1; | |
6607 | if (imm) | |
6608 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 | 6609 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
252b5132 RH |
6610 | dbl ? "dmultu" : "multu", |
6611 | "s,t", sreg, imm ? AT : treg); | |
2396cfb9 TS |
6612 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mfhi", "d", |
6613 | AT); | |
6614 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "d", | |
6615 | dreg); | |
252b5132 | 6616 | if (mips_trap) |
9bd7d936 MR |
6617 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "tne", |
6618 | "s,t,q", AT, 0, 6); | |
252b5132 RH |
6619 | else |
6620 | { | |
6621 | expr1.X_add_number = 8; | |
6622 | macro_build ((char *) NULL, &icnt, &expr1, "beq", "s,t,p", AT, 0); | |
2396cfb9 TS |
6623 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", "", |
6624 | 0); | |
6625 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", | |
6626 | "c", 6); | |
252b5132 RH |
6627 | } |
6628 | --mips_opts.noreorder; | |
6629 | break; | |
6630 | ||
771c7ce4 TS |
6631 | case M_DROL: |
6632 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsubu", | |
6633 | "d,v,t", AT, 0, treg); | |
6634 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsrlv", | |
6635 | "d,t,s", AT, sreg, AT); | |
6636 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsllv", | |
6637 | "d,t,s", dreg, sreg, treg); | |
6638 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
6639 | "d,v,t", dreg, dreg, AT); | |
6640 | break; | |
6641 | ||
252b5132 | 6642 | case M_ROL: |
2396cfb9 TS |
6643 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "subu", |
6644 | "d,v,t", AT, 0, treg); | |
6645 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srlv", | |
6646 | "d,t,s", AT, sreg, AT); | |
6647 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sllv", | |
6648 | "d,t,s", dreg, sreg, treg); | |
6649 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
6650 | "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
6651 | break; |
6652 | ||
771c7ce4 TS |
6653 | case M_DROL_I: |
6654 | { | |
6655 | unsigned int rot; | |
6656 | char *l, *r; | |
6657 | ||
6658 | if (imm_expr.X_op != O_constant) | |
6659 | as_bad (_("rotate count too large")); | |
6660 | rot = imm_expr.X_add_number & 0x3f; | |
6661 | if (! rot) | |
6662 | break; | |
6663 | l = (rot < 0x20) ? "dsll" : "dsll32"; | |
6664 | r = ((0x40 - rot) < 0x20) ? "dsrl" : "dsrl32"; | |
6665 | rot &= 0x1f; | |
6666 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, l, | |
6667 | "d,w,<", AT, sreg, rot); | |
6668 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, r, | |
6669 | "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
6670 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
6671 | "d,v,t", dreg, dreg, AT); | |
6672 | } | |
6673 | break; | |
6674 | ||
252b5132 | 6675 | case M_ROL_I: |
771c7ce4 TS |
6676 | { |
6677 | unsigned int rot; | |
6678 | ||
6679 | if (imm_expr.X_op != O_constant) | |
6680 | as_bad (_("rotate count too large")); | |
6681 | rot = imm_expr.X_add_number & 0x1f; | |
6682 | if (! rot) | |
6683 | break; | |
6684 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sll", | |
6685 | "d,w,<", AT, sreg, rot); | |
6686 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srl", | |
6687 | "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
6688 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
6689 | "d,v,t", dreg, dreg, AT); | |
6690 | } | |
6691 | break; | |
6692 | ||
6693 | case M_DROR: | |
6694 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsubu", | |
6695 | "d,v,t", AT, 0, treg); | |
6696 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsllv", | |
6697 | "d,t,s", AT, sreg, AT); | |
6698 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "dsrlv", | |
6699 | "d,t,s", dreg, sreg, treg); | |
6700 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
6701 | "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
6702 | break; |
6703 | ||
6704 | case M_ROR: | |
2396cfb9 TS |
6705 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "subu", |
6706 | "d,v,t", AT, 0, treg); | |
6707 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sllv", | |
6708 | "d,t,s", AT, sreg, AT); | |
6709 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srlv", | |
6710 | "d,t,s", dreg, sreg, treg); | |
6711 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
6712 | "d,v,t", dreg, dreg, AT); | |
252b5132 RH |
6713 | break; |
6714 | ||
771c7ce4 TS |
6715 | case M_DROR_I: |
6716 | { | |
6717 | unsigned int rot; | |
6718 | char *l, *r; | |
6719 | ||
6720 | if (imm_expr.X_op != O_constant) | |
6721 | as_bad (_("rotate count too large")); | |
6722 | rot = imm_expr.X_add_number & 0x3f; | |
6723 | if (! rot) | |
6724 | break; | |
6725 | r = (rot < 0x20) ? "dsrl" : "dsrl32"; | |
6726 | l = ((0x40 - rot) < 0x20) ? "dsll" : "dsll32"; | |
6727 | rot &= 0x1f; | |
6728 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, r, | |
6729 | "d,w,<", AT, sreg, rot); | |
6730 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, l, | |
6731 | "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
6732 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
6733 | "d,v,t", dreg, dreg, AT); | |
6734 | } | |
6735 | break; | |
6736 | ||
252b5132 | 6737 | case M_ROR_I: |
771c7ce4 TS |
6738 | { |
6739 | unsigned int rot; | |
6740 | ||
6741 | if (imm_expr.X_op != O_constant) | |
6742 | as_bad (_("rotate count too large")); | |
6743 | rot = imm_expr.X_add_number & 0x1f; | |
6744 | if (! rot) | |
6745 | break; | |
6746 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srl", | |
6747 | "d,w,<", AT, sreg, rot); | |
6748 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sll", | |
6749 | "d,w,<", dreg, sreg, (0x20 - rot) & 0x1f); | |
6750 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", | |
6751 | "d,v,t", dreg, dreg, AT); | |
6752 | } | |
252b5132 RH |
6753 | break; |
6754 | ||
6755 | case M_S_DOB: | |
ec68c924 | 6756 | if (mips_arch == CPU_R4650) |
252b5132 RH |
6757 | { |
6758 | as_bad (_("opcode not supported on this processor")); | |
6759 | return; | |
6760 | } | |
e7af610e | 6761 | assert (mips_opts.isa == ISA_MIPS1); |
252b5132 RH |
6762 | /* Even on a big endian machine $fn comes before $fn+1. We have |
6763 | to adjust when storing to memory. */ | |
6764 | macro_build ((char *) NULL, &icnt, &offset_expr, "swc1", "T,o(b)", | |
6765 | target_big_endian ? treg + 1 : treg, | |
6766 | (int) BFD_RELOC_LO16, breg); | |
6767 | offset_expr.X_add_number += 4; | |
6768 | macro_build ((char *) NULL, &icnt, &offset_expr, "swc1", "T,o(b)", | |
6769 | target_big_endian ? treg : treg + 1, | |
6770 | (int) BFD_RELOC_LO16, breg); | |
6771 | return; | |
6772 | ||
6773 | case M_SEQ: | |
6774 | if (sreg == 0) | |
6775 | macro_build ((char *) NULL, &icnt, &expr1, "sltiu", "t,r,j", dreg, | |
6776 | treg, (int) BFD_RELOC_LO16); | |
6777 | else if (treg == 0) | |
6778 | macro_build ((char *) NULL, &icnt, &expr1, "sltiu", "t,r,j", dreg, | |
6779 | sreg, (int) BFD_RELOC_LO16); | |
6780 | else | |
6781 | { | |
2396cfb9 TS |
6782 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "xor", |
6783 | "d,v,t", dreg, sreg, treg); | |
252b5132 RH |
6784 | macro_build ((char *) NULL, &icnt, &expr1, "sltiu", "t,r,j", dreg, |
6785 | dreg, (int) BFD_RELOC_LO16); | |
6786 | } | |
6787 | return; | |
6788 | ||
6789 | case M_SEQ_I: | |
6790 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6791 | { | |
6792 | macro_build ((char *) NULL, &icnt, &expr1, "sltiu", "t,r,j", dreg, | |
6793 | sreg, (int) BFD_RELOC_LO16); | |
6794 | return; | |
6795 | } | |
6796 | if (sreg == 0) | |
6797 | { | |
6798 | as_warn (_("Instruction %s: result is always false"), | |
6799 | ip->insn_mo->name); | |
ea1fb5dc | 6800 | move_register (&icnt, dreg, 0); |
252b5132 RH |
6801 | return; |
6802 | } | |
6803 | if (imm_expr.X_op == O_constant | |
6804 | && imm_expr.X_add_number >= 0 | |
6805 | && imm_expr.X_add_number < 0x10000) | |
6806 | { | |
6807 | macro_build ((char *) NULL, &icnt, &imm_expr, "xori", "t,r,i", dreg, | |
6808 | sreg, (int) BFD_RELOC_LO16); | |
6809 | used_at = 0; | |
6810 | } | |
6811 | else if (imm_expr.X_op == O_constant | |
6812 | && imm_expr.X_add_number > -0x8000 | |
6813 | && imm_expr.X_add_number < 0) | |
6814 | { | |
6815 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
6816 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
ca4e0257 | 6817 | HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
252b5132 RH |
6818 | "t,r,j", dreg, sreg, |
6819 | (int) BFD_RELOC_LO16); | |
6820 | used_at = 0; | |
6821 | } | |
6822 | else | |
6823 | { | |
4d34fb5f | 6824 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
6825 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "xor", |
6826 | "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
6827 | used_at = 1; |
6828 | } | |
6829 | macro_build ((char *) NULL, &icnt, &expr1, "sltiu", "t,r,j", dreg, dreg, | |
6830 | (int) BFD_RELOC_LO16); | |
6831 | if (used_at) | |
6832 | break; | |
6833 | return; | |
6834 | ||
6835 | case M_SGE: /* sreg >= treg <==> not (sreg < treg) */ | |
6836 | s = "slt"; | |
6837 | goto sge; | |
6838 | case M_SGEU: | |
6839 | s = "sltu"; | |
6840 | sge: | |
2396cfb9 TS |
6841 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d,v,t", |
6842 | dreg, sreg, treg); | |
252b5132 RH |
6843 | macro_build ((char *) NULL, &icnt, &expr1, "xori", "t,r,i", dreg, dreg, |
6844 | (int) BFD_RELOC_LO16); | |
6845 | return; | |
6846 | ||
6847 | case M_SGE_I: /* sreg >= I <==> not (sreg < I) */ | |
6848 | case M_SGEU_I: | |
6849 | if (imm_expr.X_op == O_constant | |
6850 | && imm_expr.X_add_number >= -0x8000 | |
6851 | && imm_expr.X_add_number < 0x8000) | |
6852 | { | |
6853 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
6854 | mask == M_SGE_I ? "slti" : "sltiu", | |
6855 | "t,r,j", dreg, sreg, (int) BFD_RELOC_LO16); | |
6856 | used_at = 0; | |
6857 | } | |
6858 | else | |
6859 | { | |
4d34fb5f | 6860 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
6861 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
6862 | mask == M_SGE_I ? "slt" : "sltu", "d,v,t", dreg, sreg, | |
6863 | AT); | |
252b5132 RH |
6864 | used_at = 1; |
6865 | } | |
6866 | macro_build ((char *) NULL, &icnt, &expr1, "xori", "t,r,i", dreg, dreg, | |
6867 | (int) BFD_RELOC_LO16); | |
6868 | if (used_at) | |
6869 | break; | |
6870 | return; | |
6871 | ||
6872 | case M_SGT: /* sreg > treg <==> treg < sreg */ | |
6873 | s = "slt"; | |
6874 | goto sgt; | |
6875 | case M_SGTU: | |
6876 | s = "sltu"; | |
6877 | sgt: | |
2396cfb9 TS |
6878 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d,v,t", |
6879 | dreg, treg, sreg); | |
252b5132 RH |
6880 | return; |
6881 | ||
6882 | case M_SGT_I: /* sreg > I <==> I < sreg */ | |
6883 | s = "slt"; | |
6884 | goto sgti; | |
6885 | case M_SGTU_I: | |
6886 | s = "sltu"; | |
6887 | sgti: | |
4d34fb5f | 6888 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
6889 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d,v,t", |
6890 | dreg, AT, sreg); | |
252b5132 RH |
6891 | break; |
6892 | ||
2396cfb9 | 6893 | case M_SLE: /* sreg <= treg <==> treg >= sreg <==> not (treg < sreg) */ |
252b5132 RH |
6894 | s = "slt"; |
6895 | goto sle; | |
6896 | case M_SLEU: | |
6897 | s = "sltu"; | |
6898 | sle: | |
2396cfb9 TS |
6899 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d,v,t", |
6900 | dreg, treg, sreg); | |
252b5132 RH |
6901 | macro_build ((char *) NULL, &icnt, &expr1, "xori", "t,r,i", dreg, dreg, |
6902 | (int) BFD_RELOC_LO16); | |
6903 | return; | |
6904 | ||
2396cfb9 | 6905 | case M_SLE_I: /* sreg <= I <==> I >= sreg <==> not (I < sreg) */ |
252b5132 RH |
6906 | s = "slt"; |
6907 | goto slei; | |
6908 | case M_SLEU_I: | |
6909 | s = "sltu"; | |
6910 | slei: | |
4d34fb5f | 6911 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
6912 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "d,v,t", |
6913 | dreg, AT, sreg); | |
252b5132 RH |
6914 | macro_build ((char *) NULL, &icnt, &expr1, "xori", "t,r,i", dreg, dreg, |
6915 | (int) BFD_RELOC_LO16); | |
6916 | break; | |
6917 | ||
6918 | case M_SLT_I: | |
6919 | if (imm_expr.X_op == O_constant | |
6920 | && imm_expr.X_add_number >= -0x8000 | |
6921 | && imm_expr.X_add_number < 0x8000) | |
6922 | { | |
6923 | macro_build ((char *) NULL, &icnt, &imm_expr, "slti", "t,r,j", | |
6924 | dreg, sreg, (int) BFD_RELOC_LO16); | |
6925 | return; | |
6926 | } | |
4d34fb5f | 6927 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
6928 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "slt", "d,v,t", |
6929 | dreg, sreg, AT); | |
252b5132 RH |
6930 | break; |
6931 | ||
6932 | case M_SLTU_I: | |
6933 | if (imm_expr.X_op == O_constant | |
6934 | && imm_expr.X_add_number >= -0x8000 | |
6935 | && imm_expr.X_add_number < 0x8000) | |
6936 | { | |
6937 | macro_build ((char *) NULL, &icnt, &imm_expr, "sltiu", "t,r,j", | |
6938 | dreg, sreg, (int) BFD_RELOC_LO16); | |
6939 | return; | |
6940 | } | |
4d34fb5f | 6941 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
6942 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
6943 | "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
6944 | break; |
6945 | ||
6946 | case M_SNE: | |
6947 | if (sreg == 0) | |
2396cfb9 TS |
6948 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
6949 | "d,v,t", dreg, 0, treg); | |
252b5132 | 6950 | else if (treg == 0) |
2396cfb9 TS |
6951 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
6952 | "d,v,t", dreg, 0, sreg); | |
252b5132 RH |
6953 | else |
6954 | { | |
2396cfb9 TS |
6955 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "xor", |
6956 | "d,v,t", dreg, sreg, treg); | |
6957 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", | |
6958 | "d,v,t", dreg, 0, dreg); | |
252b5132 RH |
6959 | } |
6960 | return; | |
6961 | ||
6962 | case M_SNE_I: | |
6963 | if (imm_expr.X_op == O_constant && imm_expr.X_add_number == 0) | |
6964 | { | |
2396cfb9 TS |
6965 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
6966 | "d,v,t", dreg, 0, sreg); | |
252b5132 RH |
6967 | return; |
6968 | } | |
6969 | if (sreg == 0) | |
6970 | { | |
6971 | as_warn (_("Instruction %s: result is always true"), | |
6972 | ip->insn_mo->name); | |
6973 | macro_build ((char *) NULL, &icnt, &expr1, | |
ca4e0257 | 6974 | HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
252b5132 RH |
6975 | "t,r,j", dreg, 0, (int) BFD_RELOC_LO16); |
6976 | return; | |
6977 | } | |
6978 | if (imm_expr.X_op == O_constant | |
6979 | && imm_expr.X_add_number >= 0 | |
6980 | && imm_expr.X_add_number < 0x10000) | |
6981 | { | |
6982 | macro_build ((char *) NULL, &icnt, &imm_expr, "xori", "t,r,i", | |
6983 | dreg, sreg, (int) BFD_RELOC_LO16); | |
6984 | used_at = 0; | |
6985 | } | |
6986 | else if (imm_expr.X_op == O_constant | |
6987 | && imm_expr.X_add_number > -0x8000 | |
6988 | && imm_expr.X_add_number < 0) | |
6989 | { | |
6990 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
6991 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
ca4e0257 | 6992 | HAVE_32BIT_GPRS ? "addiu" : "daddiu", |
252b5132 RH |
6993 | "t,r,j", dreg, sreg, (int) BFD_RELOC_LO16); |
6994 | used_at = 0; | |
6995 | } | |
6996 | else | |
6997 | { | |
4d34fb5f | 6998 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
6999 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "xor", |
7000 | "d,v,t", dreg, sreg, AT); | |
252b5132 RH |
7001 | used_at = 1; |
7002 | } | |
2396cfb9 TS |
7003 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sltu", |
7004 | "d,v,t", dreg, 0, dreg); | |
252b5132 RH |
7005 | if (used_at) |
7006 | break; | |
7007 | return; | |
7008 | ||
7009 | case M_DSUB_I: | |
7010 | dbl = 1; | |
7011 | case M_SUB_I: | |
7012 | if (imm_expr.X_op == O_constant | |
7013 | && imm_expr.X_add_number > -0x8000 | |
7014 | && imm_expr.X_add_number <= 0x8000) | |
7015 | { | |
7016 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
7017 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
7018 | dbl ? "daddi" : "addi", | |
7019 | "t,r,j", dreg, sreg, (int) BFD_RELOC_LO16); | |
7020 | return; | |
7021 | } | |
7022 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 | 7023 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 7024 | dbl ? "dsub" : "sub", "d,v,t", dreg, sreg, AT); |
252b5132 RH |
7025 | break; |
7026 | ||
7027 | case M_DSUBU_I: | |
7028 | dbl = 1; | |
7029 | case M_SUBU_I: | |
7030 | if (imm_expr.X_op == O_constant | |
7031 | && imm_expr.X_add_number > -0x8000 | |
7032 | && imm_expr.X_add_number <= 0x8000) | |
7033 | { | |
7034 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
7035 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
7036 | dbl ? "daddiu" : "addiu", | |
7037 | "t,r,j", dreg, sreg, (int) BFD_RELOC_LO16); | |
7038 | return; | |
7039 | } | |
7040 | load_register (&icnt, AT, &imm_expr, dbl); | |
2396cfb9 | 7041 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 7042 | dbl ? "dsubu" : "subu", "d,v,t", dreg, sreg, AT); |
252b5132 RH |
7043 | break; |
7044 | ||
7045 | case M_TEQ_I: | |
7046 | s = "teq"; | |
7047 | goto trap; | |
7048 | case M_TGE_I: | |
7049 | s = "tge"; | |
7050 | goto trap; | |
7051 | case M_TGEU_I: | |
7052 | s = "tgeu"; | |
7053 | goto trap; | |
7054 | case M_TLT_I: | |
7055 | s = "tlt"; | |
7056 | goto trap; | |
7057 | case M_TLTU_I: | |
7058 | s = "tltu"; | |
7059 | goto trap; | |
7060 | case M_TNE_I: | |
7061 | s = "tne"; | |
7062 | trap: | |
4d34fb5f | 7063 | load_register (&icnt, AT, &imm_expr, HAVE_64BIT_GPRS); |
2396cfb9 TS |
7064 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "s,t", sreg, |
7065 | AT); | |
252b5132 RH |
7066 | break; |
7067 | ||
252b5132 | 7068 | case M_TRUNCWS: |
43841e91 | 7069 | case M_TRUNCWD: |
e7af610e | 7070 | assert (mips_opts.isa == ISA_MIPS1); |
252b5132 RH |
7071 | sreg = (ip->insn_opcode >> 11) & 0x1f; /* floating reg */ |
7072 | dreg = (ip->insn_opcode >> 06) & 0x1f; /* floating reg */ | |
7073 | ||
7074 | /* | |
7075 | * Is the double cfc1 instruction a bug in the mips assembler; | |
7076 | * or is there a reason for it? | |
7077 | */ | |
7078 | mips_emit_delays (true); | |
7079 | ++mips_opts.noreorder; | |
7080 | mips_any_noreorder = 1; | |
2396cfb9 | 7081 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "cfc1", "t,G", |
f9419b05 | 7082 | treg, RA); |
2396cfb9 | 7083 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "cfc1", "t,G", |
f9419b05 | 7084 | treg, RA); |
2396cfb9 | 7085 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); |
252b5132 RH |
7086 | expr1.X_add_number = 3; |
7087 | macro_build ((char *) NULL, &icnt, &expr1, "ori", "t,r,i", AT, treg, | |
7088 | (int) BFD_RELOC_LO16); | |
7089 | expr1.X_add_number = 2; | |
7090 | macro_build ((char *) NULL, &icnt, &expr1, "xori", "t,r,i", AT, AT, | |
7091 | (int) BFD_RELOC_LO16); | |
2396cfb9 | 7092 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "ctc1", "t,G", |
f9419b05 | 7093 | AT, RA); |
2396cfb9 TS |
7094 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); |
7095 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
252b5132 | 7096 | mask == M_TRUNCWD ? "cvt.w.d" : "cvt.w.s", "D,S", dreg, sreg); |
2396cfb9 | 7097 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "ctc1", "t,G", |
f9419b05 | 7098 | treg, RA); |
2396cfb9 | 7099 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "nop", ""); |
252b5132 RH |
7100 | --mips_opts.noreorder; |
7101 | break; | |
7102 | ||
7103 | case M_ULH: | |
7104 | s = "lb"; | |
7105 | goto ulh; | |
7106 | case M_ULHU: | |
7107 | s = "lbu"; | |
7108 | ulh: | |
7109 | if (offset_expr.X_add_number >= 0x7fff) | |
7110 | as_bad (_("operand overflow")); | |
7111 | /* avoid load delay */ | |
7112 | if (! target_big_endian) | |
f9419b05 | 7113 | ++offset_expr.X_add_number; |
252b5132 RH |
7114 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "t,o(b)", treg, |
7115 | (int) BFD_RELOC_LO16, breg); | |
7116 | if (! target_big_endian) | |
f9419b05 | 7117 | --offset_expr.X_add_number; |
252b5132 | 7118 | else |
f9419b05 | 7119 | ++offset_expr.X_add_number; |
252b5132 RH |
7120 | macro_build ((char *) NULL, &icnt, &offset_expr, "lbu", "t,o(b)", AT, |
7121 | (int) BFD_RELOC_LO16, breg); | |
2396cfb9 TS |
7122 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sll", "d,w,<", |
7123 | treg, treg, 8); | |
7124 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", "d,v,t", | |
7125 | treg, treg, AT); | |
252b5132 RH |
7126 | break; |
7127 | ||
7128 | case M_ULD: | |
7129 | s = "ldl"; | |
7130 | s2 = "ldr"; | |
7131 | off = 7; | |
7132 | goto ulw; | |
7133 | case M_ULW: | |
7134 | s = "lwl"; | |
7135 | s2 = "lwr"; | |
7136 | off = 3; | |
7137 | ulw: | |
7138 | if (offset_expr.X_add_number >= 0x8000 - off) | |
7139 | as_bad (_("operand overflow")); | |
7140 | if (! target_big_endian) | |
7141 | offset_expr.X_add_number += off; | |
7142 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "t,o(b)", treg, | |
7143 | (int) BFD_RELOC_LO16, breg); | |
7144 | if (! target_big_endian) | |
7145 | offset_expr.X_add_number -= off; | |
7146 | else | |
7147 | offset_expr.X_add_number += off; | |
7148 | macro_build ((char *) NULL, &icnt, &offset_expr, s2, "t,o(b)", treg, | |
7149 | (int) BFD_RELOC_LO16, breg); | |
7150 | return; | |
7151 | ||
7152 | case M_ULD_A: | |
7153 | s = "ldl"; | |
7154 | s2 = "ldr"; | |
7155 | off = 7; | |
7156 | goto ulwa; | |
7157 | case M_ULW_A: | |
7158 | s = "lwl"; | |
7159 | s2 = "lwr"; | |
7160 | off = 3; | |
7161 | ulwa: | |
d6bc6245 | 7162 | used_at = 1; |
c9914766 | 7163 | load_address (&icnt, AT, &offset_expr, &used_at); |
252b5132 RH |
7164 | if (breg != 0) |
7165 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 7166 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
7167 | "d,v,t", AT, AT, breg); |
7168 | if (! target_big_endian) | |
7169 | expr1.X_add_number = off; | |
7170 | else | |
7171 | expr1.X_add_number = 0; | |
7172 | macro_build ((char *) NULL, &icnt, &expr1, s, "t,o(b)", treg, | |
7173 | (int) BFD_RELOC_LO16, AT); | |
7174 | if (! target_big_endian) | |
7175 | expr1.X_add_number = 0; | |
7176 | else | |
7177 | expr1.X_add_number = off; | |
7178 | macro_build ((char *) NULL, &icnt, &expr1, s2, "t,o(b)", treg, | |
7179 | (int) BFD_RELOC_LO16, AT); | |
7180 | break; | |
7181 | ||
7182 | case M_ULH_A: | |
7183 | case M_ULHU_A: | |
d6bc6245 | 7184 | used_at = 1; |
c9914766 | 7185 | load_address (&icnt, AT, &offset_expr, &used_at); |
252b5132 RH |
7186 | if (breg != 0) |
7187 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 7188 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
7189 | "d,v,t", AT, AT, breg); |
7190 | if (target_big_endian) | |
7191 | expr1.X_add_number = 0; | |
7192 | macro_build ((char *) NULL, &icnt, &expr1, | |
7193 | mask == M_ULH_A ? "lb" : "lbu", "t,o(b)", treg, | |
7194 | (int) BFD_RELOC_LO16, AT); | |
7195 | if (target_big_endian) | |
7196 | expr1.X_add_number = 1; | |
7197 | else | |
7198 | expr1.X_add_number = 0; | |
7199 | macro_build ((char *) NULL, &icnt, &expr1, "lbu", "t,o(b)", AT, | |
7200 | (int) BFD_RELOC_LO16, AT); | |
2396cfb9 TS |
7201 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sll", "d,w,<", |
7202 | treg, treg, 8); | |
7203 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", "d,v,t", | |
7204 | treg, treg, AT); | |
252b5132 RH |
7205 | break; |
7206 | ||
7207 | case M_USH: | |
7208 | if (offset_expr.X_add_number >= 0x7fff) | |
7209 | as_bad (_("operand overflow")); | |
7210 | if (target_big_endian) | |
f9419b05 | 7211 | ++offset_expr.X_add_number; |
252b5132 RH |
7212 | macro_build ((char *) NULL, &icnt, &offset_expr, "sb", "t,o(b)", treg, |
7213 | (int) BFD_RELOC_LO16, breg); | |
2396cfb9 TS |
7214 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srl", "d,w,<", |
7215 | AT, treg, 8); | |
252b5132 | 7216 | if (target_big_endian) |
f9419b05 | 7217 | --offset_expr.X_add_number; |
252b5132 | 7218 | else |
f9419b05 | 7219 | ++offset_expr.X_add_number; |
252b5132 RH |
7220 | macro_build ((char *) NULL, &icnt, &offset_expr, "sb", "t,o(b)", AT, |
7221 | (int) BFD_RELOC_LO16, breg); | |
7222 | break; | |
7223 | ||
7224 | case M_USD: | |
7225 | s = "sdl"; | |
7226 | s2 = "sdr"; | |
7227 | off = 7; | |
7228 | goto usw; | |
7229 | case M_USW: | |
7230 | s = "swl"; | |
7231 | s2 = "swr"; | |
7232 | off = 3; | |
7233 | usw: | |
7234 | if (offset_expr.X_add_number >= 0x8000 - off) | |
7235 | as_bad (_("operand overflow")); | |
7236 | if (! target_big_endian) | |
7237 | offset_expr.X_add_number += off; | |
7238 | macro_build ((char *) NULL, &icnt, &offset_expr, s, "t,o(b)", treg, | |
7239 | (int) BFD_RELOC_LO16, breg); | |
7240 | if (! target_big_endian) | |
7241 | offset_expr.X_add_number -= off; | |
7242 | else | |
7243 | offset_expr.X_add_number += off; | |
7244 | macro_build ((char *) NULL, &icnt, &offset_expr, s2, "t,o(b)", treg, | |
7245 | (int) BFD_RELOC_LO16, breg); | |
7246 | return; | |
7247 | ||
7248 | case M_USD_A: | |
7249 | s = "sdl"; | |
7250 | s2 = "sdr"; | |
7251 | off = 7; | |
7252 | goto uswa; | |
7253 | case M_USW_A: | |
7254 | s = "swl"; | |
7255 | s2 = "swr"; | |
7256 | off = 3; | |
7257 | uswa: | |
d6bc6245 | 7258 | used_at = 1; |
c9914766 | 7259 | load_address (&icnt, AT, &offset_expr, &used_at); |
252b5132 RH |
7260 | if (breg != 0) |
7261 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 7262 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
7263 | "d,v,t", AT, AT, breg); |
7264 | if (! target_big_endian) | |
7265 | expr1.X_add_number = off; | |
7266 | else | |
7267 | expr1.X_add_number = 0; | |
7268 | macro_build ((char *) NULL, &icnt, &expr1, s, "t,o(b)", treg, | |
7269 | (int) BFD_RELOC_LO16, AT); | |
7270 | if (! target_big_endian) | |
7271 | expr1.X_add_number = 0; | |
7272 | else | |
7273 | expr1.X_add_number = off; | |
7274 | macro_build ((char *) NULL, &icnt, &expr1, s2, "t,o(b)", treg, | |
7275 | (int) BFD_RELOC_LO16, AT); | |
7276 | break; | |
7277 | ||
7278 | case M_USH_A: | |
d6bc6245 | 7279 | used_at = 1; |
c9914766 | 7280 | load_address (&icnt, AT, &offset_expr, &used_at); |
252b5132 RH |
7281 | if (breg != 0) |
7282 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 7283 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
252b5132 RH |
7284 | "d,v,t", AT, AT, breg); |
7285 | if (! target_big_endian) | |
7286 | expr1.X_add_number = 0; | |
7287 | macro_build ((char *) NULL, &icnt, &expr1, "sb", "t,o(b)", treg, | |
7288 | (int) BFD_RELOC_LO16, AT); | |
2396cfb9 TS |
7289 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "srl", "d,w,<", |
7290 | treg, treg, 8); | |
252b5132 RH |
7291 | if (! target_big_endian) |
7292 | expr1.X_add_number = 1; | |
7293 | else | |
7294 | expr1.X_add_number = 0; | |
7295 | macro_build ((char *) NULL, &icnt, &expr1, "sb", "t,o(b)", treg, | |
7296 | (int) BFD_RELOC_LO16, AT); | |
7297 | if (! target_big_endian) | |
7298 | expr1.X_add_number = 0; | |
7299 | else | |
7300 | expr1.X_add_number = 1; | |
7301 | macro_build ((char *) NULL, &icnt, &expr1, "lbu", "t,o(b)", AT, | |
7302 | (int) BFD_RELOC_LO16, AT); | |
2396cfb9 TS |
7303 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "sll", "d,w,<", |
7304 | treg, treg, 8); | |
7305 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "or", "d,v,t", | |
7306 | treg, treg, AT); | |
252b5132 RH |
7307 | break; |
7308 | ||
7309 | default: | |
7310 | /* FIXME: Check if this is one of the itbl macros, since they | |
bdaaa2e1 | 7311 | are added dynamically. */ |
252b5132 RH |
7312 | as_bad (_("Macro %s not implemented yet"), ip->insn_mo->name); |
7313 | break; | |
7314 | } | |
7315 | if (mips_opts.noat) | |
7316 | as_warn (_("Macro used $at after \".set noat\"")); | |
7317 | } | |
7318 | ||
7319 | /* Implement macros in mips16 mode. */ | |
7320 | ||
7321 | static void | |
7322 | mips16_macro (ip) | |
7323 | struct mips_cl_insn *ip; | |
7324 | { | |
7325 | int mask; | |
7326 | int xreg, yreg, zreg, tmp; | |
7327 | int icnt; | |
7328 | expressionS expr1; | |
7329 | int dbl; | |
7330 | const char *s, *s2, *s3; | |
7331 | ||
7332 | mask = ip->insn_mo->mask; | |
7333 | ||
7334 | xreg = (ip->insn_opcode >> MIPS16OP_SH_RX) & MIPS16OP_MASK_RX; | |
7335 | yreg = (ip->insn_opcode >> MIPS16OP_SH_RY) & MIPS16OP_MASK_RY; | |
7336 | zreg = (ip->insn_opcode >> MIPS16OP_SH_RZ) & MIPS16OP_MASK_RZ; | |
7337 | ||
7338 | icnt = 0; | |
7339 | ||
7340 | expr1.X_op = O_constant; | |
7341 | expr1.X_op_symbol = NULL; | |
7342 | expr1.X_add_symbol = NULL; | |
7343 | expr1.X_add_number = 1; | |
7344 | ||
7345 | dbl = 0; | |
7346 | ||
7347 | switch (mask) | |
7348 | { | |
7349 | default: | |
7350 | internalError (); | |
7351 | ||
7352 | case M_DDIV_3: | |
7353 | dbl = 1; | |
7354 | case M_DIV_3: | |
7355 | s = "mflo"; | |
7356 | goto do_div3; | |
7357 | case M_DREM_3: | |
7358 | dbl = 1; | |
7359 | case M_REM_3: | |
7360 | s = "mfhi"; | |
7361 | do_div3: | |
7362 | mips_emit_delays (true); | |
7363 | ++mips_opts.noreorder; | |
7364 | mips_any_noreorder = 1; | |
2396cfb9 | 7365 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
252b5132 RH |
7366 | dbl ? "ddiv" : "div", |
7367 | "0,x,y", xreg, yreg); | |
7368 | expr1.X_add_number = 2; | |
7369 | macro_build ((char *) NULL, &icnt, &expr1, "bnez", "x,p", yreg); | |
2396cfb9 TS |
7370 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", "6", |
7371 | 7); | |
bdaaa2e1 | 7372 | |
252b5132 RH |
7373 | /* FIXME: The normal code checks for of -1 / -0x80000000 here, |
7374 | since that causes an overflow. We should do that as well, | |
7375 | but I don't see how to do the comparisons without a temporary | |
7376 | register. */ | |
7377 | --mips_opts.noreorder; | |
2396cfb9 | 7378 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "x", zreg); |
252b5132 RH |
7379 | break; |
7380 | ||
7381 | case M_DIVU_3: | |
7382 | s = "divu"; | |
7383 | s2 = "mflo"; | |
7384 | goto do_divu3; | |
7385 | case M_REMU_3: | |
7386 | s = "divu"; | |
7387 | s2 = "mfhi"; | |
7388 | goto do_divu3; | |
7389 | case M_DDIVU_3: | |
7390 | s = "ddivu"; | |
7391 | s2 = "mflo"; | |
7392 | goto do_divu3; | |
7393 | case M_DREMU_3: | |
7394 | s = "ddivu"; | |
7395 | s2 = "mfhi"; | |
7396 | do_divu3: | |
7397 | mips_emit_delays (true); | |
7398 | ++mips_opts.noreorder; | |
7399 | mips_any_noreorder = 1; | |
2396cfb9 TS |
7400 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "0,x,y", |
7401 | xreg, yreg); | |
252b5132 RH |
7402 | expr1.X_add_number = 2; |
7403 | macro_build ((char *) NULL, &icnt, &expr1, "bnez", "x,p", yreg); | |
98d3f06f KH |
7404 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "break", |
7405 | "6", 7); | |
252b5132 | 7406 | --mips_opts.noreorder; |
2396cfb9 | 7407 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s2, "x", zreg); |
252b5132 RH |
7408 | break; |
7409 | ||
7410 | case M_DMUL: | |
7411 | dbl = 1; | |
7412 | case M_MUL: | |
2396cfb9 | 7413 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
9a41af64 | 7414 | dbl ? "dmultu" : "multu", "x,y", xreg, yreg); |
2396cfb9 TS |
7415 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "mflo", "x", |
7416 | zreg); | |
252b5132 RH |
7417 | return; |
7418 | ||
7419 | case M_DSUBU_I: | |
7420 | dbl = 1; | |
7421 | goto do_subu; | |
7422 | case M_SUBU_I: | |
7423 | do_subu: | |
7424 | if (imm_expr.X_op != O_constant) | |
7425 | as_bad (_("Unsupported large constant")); | |
7426 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
7427 | macro_build ((char *) NULL, &icnt, &imm_expr, | |
9a41af64 | 7428 | dbl ? "daddiu" : "addiu", "y,x,4", yreg, xreg); |
252b5132 RH |
7429 | break; |
7430 | ||
7431 | case M_SUBU_I_2: | |
7432 | if (imm_expr.X_op != O_constant) | |
7433 | as_bad (_("Unsupported large constant")); | |
7434 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
7435 | macro_build ((char *) NULL, &icnt, &imm_expr, "addiu", | |
7436 | "x,k", xreg); | |
7437 | break; | |
7438 | ||
7439 | case M_DSUBU_I_2: | |
7440 | if (imm_expr.X_op != O_constant) | |
7441 | as_bad (_("Unsupported large constant")); | |
7442 | imm_expr.X_add_number = -imm_expr.X_add_number; | |
7443 | macro_build ((char *) NULL, &icnt, &imm_expr, "daddiu", | |
7444 | "y,j", yreg); | |
7445 | break; | |
7446 | ||
7447 | case M_BEQ: | |
7448 | s = "cmp"; | |
7449 | s2 = "bteqz"; | |
7450 | goto do_branch; | |
7451 | case M_BNE: | |
7452 | s = "cmp"; | |
7453 | s2 = "btnez"; | |
7454 | goto do_branch; | |
7455 | case M_BLT: | |
7456 | s = "slt"; | |
7457 | s2 = "btnez"; | |
7458 | goto do_branch; | |
7459 | case M_BLTU: | |
7460 | s = "sltu"; | |
7461 | s2 = "btnez"; | |
7462 | goto do_branch; | |
7463 | case M_BLE: | |
7464 | s = "slt"; | |
7465 | s2 = "bteqz"; | |
7466 | goto do_reverse_branch; | |
7467 | case M_BLEU: | |
7468 | s = "sltu"; | |
7469 | s2 = "bteqz"; | |
7470 | goto do_reverse_branch; | |
7471 | case M_BGE: | |
7472 | s = "slt"; | |
7473 | s2 = "bteqz"; | |
7474 | goto do_branch; | |
7475 | case M_BGEU: | |
7476 | s = "sltu"; | |
7477 | s2 = "bteqz"; | |
7478 | goto do_branch; | |
7479 | case M_BGT: | |
7480 | s = "slt"; | |
7481 | s2 = "btnez"; | |
7482 | goto do_reverse_branch; | |
7483 | case M_BGTU: | |
7484 | s = "sltu"; | |
7485 | s2 = "btnez"; | |
7486 | ||
7487 | do_reverse_branch: | |
7488 | tmp = xreg; | |
7489 | xreg = yreg; | |
7490 | yreg = tmp; | |
7491 | ||
7492 | do_branch: | |
7493 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, s, "x,y", | |
7494 | xreg, yreg); | |
7495 | macro_build ((char *) NULL, &icnt, &offset_expr, s2, "p"); | |
7496 | break; | |
7497 | ||
7498 | case M_BEQ_I: | |
7499 | s = "cmpi"; | |
7500 | s2 = "bteqz"; | |
7501 | s3 = "x,U"; | |
7502 | goto do_branch_i; | |
7503 | case M_BNE_I: | |
7504 | s = "cmpi"; | |
7505 | s2 = "btnez"; | |
7506 | s3 = "x,U"; | |
7507 | goto do_branch_i; | |
7508 | case M_BLT_I: | |
7509 | s = "slti"; | |
7510 | s2 = "btnez"; | |
7511 | s3 = "x,8"; | |
7512 | goto do_branch_i; | |
7513 | case M_BLTU_I: | |
7514 | s = "sltiu"; | |
7515 | s2 = "btnez"; | |
7516 | s3 = "x,8"; | |
7517 | goto do_branch_i; | |
7518 | case M_BLE_I: | |
7519 | s = "slti"; | |
7520 | s2 = "btnez"; | |
7521 | s3 = "x,8"; | |
7522 | goto do_addone_branch_i; | |
7523 | case M_BLEU_I: | |
7524 | s = "sltiu"; | |
7525 | s2 = "btnez"; | |
7526 | s3 = "x,8"; | |
7527 | goto do_addone_branch_i; | |
7528 | case M_BGE_I: | |
7529 | s = "slti"; | |
7530 | s2 = "bteqz"; | |
7531 | s3 = "x,8"; | |
7532 | goto do_branch_i; | |
7533 | case M_BGEU_I: | |
7534 | s = "sltiu"; | |
7535 | s2 = "bteqz"; | |
7536 | s3 = "x,8"; | |
7537 | goto do_branch_i; | |
7538 | case M_BGT_I: | |
7539 | s = "slti"; | |
7540 | s2 = "bteqz"; | |
7541 | s3 = "x,8"; | |
7542 | goto do_addone_branch_i; | |
7543 | case M_BGTU_I: | |
7544 | s = "sltiu"; | |
7545 | s2 = "bteqz"; | |
7546 | s3 = "x,8"; | |
7547 | ||
7548 | do_addone_branch_i: | |
7549 | if (imm_expr.X_op != O_constant) | |
7550 | as_bad (_("Unsupported large constant")); | |
7551 | ++imm_expr.X_add_number; | |
7552 | ||
7553 | do_branch_i: | |
7554 | macro_build ((char *) NULL, &icnt, &imm_expr, s, s3, xreg); | |
7555 | macro_build ((char *) NULL, &icnt, &offset_expr, s2, "p"); | |
7556 | break; | |
7557 | ||
7558 | case M_ABS: | |
7559 | expr1.X_add_number = 0; | |
98d3f06f | 7560 | macro_build ((char *) NULL, &icnt, &expr1, "slti", "x,8", yreg); |
252b5132 | 7561 | if (xreg != yreg) |
ea1fb5dc | 7562 | move_register (&icnt, xreg, yreg); |
252b5132 RH |
7563 | expr1.X_add_number = 2; |
7564 | macro_build ((char *) NULL, &icnt, &expr1, "bteqz", "p"); | |
7565 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
7566 | "neg", "x,w", xreg, xreg); | |
7567 | } | |
7568 | } | |
7569 | ||
7570 | /* For consistency checking, verify that all bits are specified either | |
7571 | by the match/mask part of the instruction definition, or by the | |
7572 | operand list. */ | |
7573 | static int | |
7574 | validate_mips_insn (opc) | |
7575 | const struct mips_opcode *opc; | |
7576 | { | |
7577 | const char *p = opc->args; | |
7578 | char c; | |
7579 | unsigned long used_bits = opc->mask; | |
7580 | ||
7581 | if ((used_bits & opc->match) != opc->match) | |
7582 | { | |
7583 | as_bad (_("internal: bad mips opcode (mask error): %s %s"), | |
7584 | opc->name, opc->args); | |
7585 | return 0; | |
7586 | } | |
7587 | #define USE_BITS(mask,shift) (used_bits |= ((mask) << (shift))) | |
7588 | while (*p) | |
7589 | switch (c = *p++) | |
7590 | { | |
7591 | case ',': break; | |
7592 | case '(': break; | |
7593 | case ')': break; | |
7594 | case '<': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; | |
7595 | case '>': USE_BITS (OP_MASK_SHAMT, OP_SH_SHAMT); break; | |
7596 | case 'A': break; | |
4372b673 | 7597 | case 'B': USE_BITS (OP_MASK_CODE20, OP_SH_CODE20); break; |
252b5132 RH |
7598 | case 'C': USE_BITS (OP_MASK_COPZ, OP_SH_COPZ); break; |
7599 | case 'D': USE_BITS (OP_MASK_FD, OP_SH_FD); break; | |
7600 | case 'E': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
7601 | case 'F': break; | |
7602 | case 'G': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
156c2f8b | 7603 | case 'H': USE_BITS (OP_MASK_SEL, OP_SH_SEL); break; |
252b5132 | 7604 | case 'I': break; |
e972090a | 7605 | case 'J': USE_BITS (OP_MASK_CODE19, OP_SH_CODE19); break; |
252b5132 RH |
7606 | case 'L': break; |
7607 | case 'M': USE_BITS (OP_MASK_CCC, OP_SH_CCC); break; | |
7608 | case 'N': USE_BITS (OP_MASK_BCC, OP_SH_BCC); break; | |
deec1734 CD |
7609 | case 'O': USE_BITS (OP_MASK_ALN, OP_SH_ALN); break; |
7610 | case 'Q': USE_BITS (OP_MASK_VSEL, OP_SH_VSEL); | |
7611 | USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
7612 | case 'R': USE_BITS (OP_MASK_FR, OP_SH_FR); break; |
7613 | case 'S': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
7614 | case 'T': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
7615 | case 'V': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
7616 | case 'W': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
deec1734 CD |
7617 | case 'X': USE_BITS (OP_MASK_FD, OP_SH_FD); break; |
7618 | case 'Y': USE_BITS (OP_MASK_FS, OP_SH_FS); break; | |
7619 | case 'Z': USE_BITS (OP_MASK_FT, OP_SH_FT); break; | |
252b5132 RH |
7620 | case 'a': USE_BITS (OP_MASK_TARGET, OP_SH_TARGET); break; |
7621 | case 'b': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
7622 | case 'c': USE_BITS (OP_MASK_CODE, OP_SH_CODE); break; | |
7623 | case 'd': USE_BITS (OP_MASK_RD, OP_SH_RD); break; | |
7624 | case 'f': break; | |
7625 | case 'h': USE_BITS (OP_MASK_PREFX, OP_SH_PREFX); break; | |
7626 | case 'i': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
7627 | case 'j': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
7628 | case 'k': USE_BITS (OP_MASK_CACHE, OP_SH_CACHE); break; | |
7629 | case 'l': break; | |
7630 | case 'o': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
7631 | case 'p': USE_BITS (OP_MASK_DELTA, OP_SH_DELTA); break; | |
7632 | case 'q': USE_BITS (OP_MASK_CODE2, OP_SH_CODE2); break; | |
7633 | case 'r': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
7634 | case 's': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
7635 | case 't': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
7636 | case 'u': USE_BITS (OP_MASK_IMMEDIATE, OP_SH_IMMEDIATE); break; | |
7637 | case 'v': USE_BITS (OP_MASK_RS, OP_SH_RS); break; | |
7638 | case 'w': USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
7639 | case 'x': break; | |
7640 | case 'z': break; | |
7641 | case 'P': USE_BITS (OP_MASK_PERFREG, OP_SH_PERFREG); break; | |
4372b673 NC |
7642 | case 'U': USE_BITS (OP_MASK_RD, OP_SH_RD); |
7643 | USE_BITS (OP_MASK_RT, OP_SH_RT); break; | |
252b5132 RH |
7644 | default: |
7645 | as_bad (_("internal: bad mips opcode (unknown operand type `%c'): %s %s"), | |
7646 | c, opc->name, opc->args); | |
7647 | return 0; | |
7648 | } | |
7649 | #undef USE_BITS | |
7650 | if (used_bits != 0xffffffff) | |
7651 | { | |
7652 | as_bad (_("internal: bad mips opcode (bits 0x%lx undefined): %s %s"), | |
7653 | ~used_bits & 0xffffffff, opc->name, opc->args); | |
7654 | return 0; | |
7655 | } | |
7656 | return 1; | |
7657 | } | |
7658 | ||
7659 | /* This routine assembles an instruction into its binary format. As a | |
7660 | side effect, it sets one of the global variables imm_reloc or | |
7661 | offset_reloc to the type of relocation to do if one of the operands | |
7662 | is an address expression. */ | |
7663 | ||
7664 | static void | |
7665 | mips_ip (str, ip) | |
7666 | char *str; | |
7667 | struct mips_cl_insn *ip; | |
7668 | { | |
7669 | char *s; | |
7670 | const char *args; | |
43841e91 | 7671 | char c = 0; |
252b5132 RH |
7672 | struct mips_opcode *insn; |
7673 | char *argsStart; | |
7674 | unsigned int regno; | |
7675 | unsigned int lastregno = 0; | |
7676 | char *s_reset; | |
7677 | char save_c = 0; | |
252b5132 RH |
7678 | |
7679 | insn_error = NULL; | |
7680 | ||
7681 | /* If the instruction contains a '.', we first try to match an instruction | |
7682 | including the '.'. Then we try again without the '.'. */ | |
7683 | insn = NULL; | |
3882b010 | 7684 | for (s = str; *s != '\0' && !ISSPACE (*s); ++s) |
252b5132 RH |
7685 | continue; |
7686 | ||
7687 | /* If we stopped on whitespace, then replace the whitespace with null for | |
7688 | the call to hash_find. Save the character we replaced just in case we | |
7689 | have to re-parse the instruction. */ | |
3882b010 | 7690 | if (ISSPACE (*s)) |
252b5132 RH |
7691 | { |
7692 | save_c = *s; | |
7693 | *s++ = '\0'; | |
7694 | } | |
bdaaa2e1 | 7695 | |
252b5132 RH |
7696 | insn = (struct mips_opcode *) hash_find (op_hash, str); |
7697 | ||
7698 | /* If we didn't find the instruction in the opcode table, try again, but | |
7699 | this time with just the instruction up to, but not including the | |
7700 | first '.'. */ | |
7701 | if (insn == NULL) | |
7702 | { | |
bdaaa2e1 | 7703 | /* Restore the character we overwrite above (if any). */ |
252b5132 RH |
7704 | if (save_c) |
7705 | *(--s) = save_c; | |
7706 | ||
7707 | /* Scan up to the first '.' or whitespace. */ | |
3882b010 L |
7708 | for (s = str; |
7709 | *s != '\0' && *s != '.' && !ISSPACE (*s); | |
7710 | ++s) | |
252b5132 RH |
7711 | continue; |
7712 | ||
7713 | /* If we did not find a '.', then we can quit now. */ | |
7714 | if (*s != '.') | |
7715 | { | |
7716 | insn_error = "unrecognized opcode"; | |
7717 | return; | |
7718 | } | |
7719 | ||
7720 | /* Lookup the instruction in the hash table. */ | |
7721 | *s++ = '\0'; | |
7722 | if ((insn = (struct mips_opcode *) hash_find (op_hash, str)) == NULL) | |
7723 | { | |
7724 | insn_error = "unrecognized opcode"; | |
7725 | return; | |
7726 | } | |
252b5132 RH |
7727 | } |
7728 | ||
7729 | argsStart = s; | |
7730 | for (;;) | |
7731 | { | |
252b5132 RH |
7732 | boolean ok; |
7733 | ||
7734 | assert (strcmp (insn->name, str) == 0); | |
7735 | ||
1f25f5d3 CD |
7736 | if (OPCODE_IS_MEMBER (insn, |
7737 | (mips_opts.isa | |
aec421e0 | 7738 | | (mips_opts.mips16 ? INSN_MIPS16 : 0) |
deec1734 | 7739 | | (mips_opts.ase_mdmx ? INSN_MDMX : 0) |
98d3f06f | 7740 | | (mips_opts.ase_mips3d ? INSN_MIPS3D : 0)), |
1f25f5d3 | 7741 | mips_arch)) |
252b5132 | 7742 | ok = true; |
bdaaa2e1 | 7743 | else |
252b5132 | 7744 | ok = false; |
bdaaa2e1 | 7745 | |
252b5132 RH |
7746 | if (insn->pinfo != INSN_MACRO) |
7747 | { | |
ec68c924 | 7748 | if (mips_arch == CPU_R4650 && (insn->pinfo & FP_D) != 0) |
252b5132 RH |
7749 | ok = false; |
7750 | } | |
7751 | ||
7752 | if (! ok) | |
7753 | { | |
7754 | if (insn + 1 < &mips_opcodes[NUMOPCODES] | |
7755 | && strcmp (insn->name, insn[1].name) == 0) | |
7756 | { | |
7757 | ++insn; | |
7758 | continue; | |
7759 | } | |
252b5132 | 7760 | else |
beae10d5 | 7761 | { |
268f6bed L |
7762 | if (!insn_error) |
7763 | { | |
7764 | static char buf[100]; | |
316f5878 RS |
7765 | if (mips_arch_info->is_isa) |
7766 | sprintf (buf, | |
7767 | _("opcode not supported at this ISA level (%s)"), | |
7768 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
7769 | else | |
7770 | sprintf (buf, | |
7771 | _("opcode not supported on this processor: %s (%s)"), | |
7772 | mips_arch_info->name, | |
7773 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
268f6bed L |
7774 | insn_error = buf; |
7775 | } | |
7776 | if (save_c) | |
7777 | *(--s) = save_c; | |
2bd7f1f3 | 7778 | return; |
252b5132 | 7779 | } |
252b5132 RH |
7780 | } |
7781 | ||
7782 | ip->insn_mo = insn; | |
7783 | ip->insn_opcode = insn->match; | |
268f6bed | 7784 | insn_error = NULL; |
252b5132 RH |
7785 | for (args = insn->args;; ++args) |
7786 | { | |
deec1734 CD |
7787 | int is_mdmx; |
7788 | ||
ad8d3bb3 | 7789 | s += strspn (s, " \t"); |
deec1734 | 7790 | is_mdmx = 0; |
252b5132 RH |
7791 | switch (*args) |
7792 | { | |
7793 | case '\0': /* end of args */ | |
7794 | if (*s == '\0') | |
7795 | return; | |
7796 | break; | |
7797 | ||
7798 | case ',': | |
7799 | if (*s++ == *args) | |
7800 | continue; | |
7801 | s--; | |
7802 | switch (*++args) | |
7803 | { | |
7804 | case 'r': | |
7805 | case 'v': | |
38487616 | 7806 | ip->insn_opcode |= lastregno << OP_SH_RS; |
252b5132 RH |
7807 | continue; |
7808 | ||
7809 | case 'w': | |
38487616 TS |
7810 | ip->insn_opcode |= lastregno << OP_SH_RT; |
7811 | continue; | |
7812 | ||
252b5132 | 7813 | case 'W': |
38487616 | 7814 | ip->insn_opcode |= lastregno << OP_SH_FT; |
252b5132 RH |
7815 | continue; |
7816 | ||
7817 | case 'V': | |
38487616 | 7818 | ip->insn_opcode |= lastregno << OP_SH_FS; |
252b5132 RH |
7819 | continue; |
7820 | } | |
7821 | break; | |
7822 | ||
7823 | case '(': | |
7824 | /* Handle optional base register. | |
7825 | Either the base register is omitted or | |
bdaaa2e1 | 7826 | we must have a left paren. */ |
252b5132 RH |
7827 | /* This is dependent on the next operand specifier |
7828 | is a base register specification. */ | |
7829 | assert (args[1] == 'b' || args[1] == '5' | |
7830 | || args[1] == '-' || args[1] == '4'); | |
7831 | if (*s == '\0') | |
7832 | return; | |
7833 | ||
7834 | case ')': /* these must match exactly */ | |
7835 | if (*s++ == *args) | |
7836 | continue; | |
7837 | break; | |
7838 | ||
7839 | case '<': /* must be at least one digit */ | |
7840 | /* | |
7841 | * According to the manual, if the shift amount is greater | |
b6ff326e KH |
7842 | * than 31 or less than 0, then the shift amount should be |
7843 | * mod 32. In reality the mips assembler issues an error. | |
252b5132 RH |
7844 | * We issue a warning and mask out all but the low 5 bits. |
7845 | */ | |
7846 | my_getExpression (&imm_expr, s); | |
7847 | check_absolute_expr (ip, &imm_expr); | |
7848 | if ((unsigned long) imm_expr.X_add_number > 31) | |
7849 | { | |
793b27f4 TS |
7850 | as_warn (_("Improper shift amount (%lu)"), |
7851 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 7852 | imm_expr.X_add_number &= OP_MASK_SHAMT; |
252b5132 | 7853 | } |
38487616 | 7854 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_SHAMT; |
252b5132 RH |
7855 | imm_expr.X_op = O_absent; |
7856 | s = expr_end; | |
7857 | continue; | |
7858 | ||
7859 | case '>': /* shift amount minus 32 */ | |
7860 | my_getExpression (&imm_expr, s); | |
7861 | check_absolute_expr (ip, &imm_expr); | |
7862 | if ((unsigned long) imm_expr.X_add_number < 32 | |
7863 | || (unsigned long) imm_expr.X_add_number > 63) | |
7864 | break; | |
38487616 | 7865 | ip->insn_opcode |= (imm_expr.X_add_number - 32) << OP_SH_SHAMT; |
252b5132 RH |
7866 | imm_expr.X_op = O_absent; |
7867 | s = expr_end; | |
7868 | continue; | |
7869 | ||
252b5132 RH |
7870 | case 'k': /* cache code */ |
7871 | case 'h': /* prefx code */ | |
7872 | my_getExpression (&imm_expr, s); | |
7873 | check_absolute_expr (ip, &imm_expr); | |
7874 | if ((unsigned long) imm_expr.X_add_number > 31) | |
7875 | { | |
7876 | as_warn (_("Invalid value for `%s' (%lu)"), | |
7877 | ip->insn_mo->name, | |
7878 | (unsigned long) imm_expr.X_add_number); | |
7879 | imm_expr.X_add_number &= 0x1f; | |
7880 | } | |
7881 | if (*args == 'k') | |
7882 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_CACHE; | |
7883 | else | |
7884 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_PREFX; | |
7885 | imm_expr.X_op = O_absent; | |
7886 | s = expr_end; | |
7887 | continue; | |
7888 | ||
7889 | case 'c': /* break code */ | |
7890 | my_getExpression (&imm_expr, s); | |
7891 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 | 7892 | if ((unsigned long) imm_expr.X_add_number > 1023) |
252b5132 | 7893 | { |
793b27f4 TS |
7894 | as_warn (_("Illegal break code (%lu)"), |
7895 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 7896 | imm_expr.X_add_number &= OP_MASK_CODE; |
252b5132 | 7897 | } |
38487616 | 7898 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_CODE; |
252b5132 RH |
7899 | imm_expr.X_op = O_absent; |
7900 | s = expr_end; | |
7901 | continue; | |
7902 | ||
7903 | case 'q': /* lower break code */ | |
7904 | my_getExpression (&imm_expr, s); | |
7905 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 | 7906 | if ((unsigned long) imm_expr.X_add_number > 1023) |
252b5132 | 7907 | { |
793b27f4 TS |
7908 | as_warn (_("Illegal lower break code (%lu)"), |
7909 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 7910 | imm_expr.X_add_number &= OP_MASK_CODE2; |
252b5132 | 7911 | } |
38487616 | 7912 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_CODE2; |
252b5132 RH |
7913 | imm_expr.X_op = O_absent; |
7914 | s = expr_end; | |
7915 | continue; | |
7916 | ||
4372b673 | 7917 | case 'B': /* 20-bit syscall/break code. */ |
156c2f8b | 7918 | my_getExpression (&imm_expr, s); |
156c2f8b | 7919 | check_absolute_expr (ip, &imm_expr); |
793b27f4 TS |
7920 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE20) |
7921 | as_warn (_("Illegal 20-bit code (%lu)"), | |
7922 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 7923 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_CODE20; |
252b5132 RH |
7924 | imm_expr.X_op = O_absent; |
7925 | s = expr_end; | |
7926 | continue; | |
7927 | ||
98d3f06f | 7928 | case 'C': /* Coprocessor code */ |
beae10d5 | 7929 | my_getExpression (&imm_expr, s); |
252b5132 | 7930 | check_absolute_expr (ip, &imm_expr); |
98d3f06f | 7931 | if ((unsigned long) imm_expr.X_add_number >= (1 << 25)) |
252b5132 | 7932 | { |
793b27f4 TS |
7933 | as_warn (_("Coproccesor code > 25 bits (%lu)"), |
7934 | (unsigned long) imm_expr.X_add_number); | |
98d3f06f | 7935 | imm_expr.X_add_number &= ((1 << 25) - 1); |
252b5132 | 7936 | } |
beae10d5 KH |
7937 | ip->insn_opcode |= imm_expr.X_add_number; |
7938 | imm_expr.X_op = O_absent; | |
7939 | s = expr_end; | |
7940 | continue; | |
252b5132 | 7941 | |
4372b673 NC |
7942 | case 'J': /* 19-bit wait code. */ |
7943 | my_getExpression (&imm_expr, s); | |
7944 | check_absolute_expr (ip, &imm_expr); | |
793b27f4 TS |
7945 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_CODE19) |
7946 | as_warn (_("Illegal 19-bit code (%lu)"), | |
7947 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 7948 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_CODE19; |
4372b673 NC |
7949 | imm_expr.X_op = O_absent; |
7950 | s = expr_end; | |
7951 | continue; | |
7952 | ||
252b5132 | 7953 | case 'P': /* Performance register */ |
beae10d5 | 7954 | my_getExpression (&imm_expr, s); |
252b5132 | 7955 | check_absolute_expr (ip, &imm_expr); |
beae10d5 | 7956 | if (imm_expr.X_add_number != 0 && imm_expr.X_add_number != 1) |
252b5132 | 7957 | { |
793b27f4 TS |
7958 | as_warn (_("Invalid performance register (%lu)"), |
7959 | (unsigned long) imm_expr.X_add_number); | |
38487616 | 7960 | imm_expr.X_add_number &= OP_MASK_PERFREG; |
252b5132 | 7961 | } |
38487616 | 7962 | ip->insn_opcode |= (imm_expr.X_add_number << OP_SH_PERFREG); |
beae10d5 KH |
7963 | imm_expr.X_op = O_absent; |
7964 | s = expr_end; | |
7965 | continue; | |
252b5132 RH |
7966 | |
7967 | case 'b': /* base register */ | |
7968 | case 'd': /* destination register */ | |
7969 | case 's': /* source register */ | |
7970 | case 't': /* target register */ | |
7971 | case 'r': /* both target and source */ | |
7972 | case 'v': /* both dest and source */ | |
7973 | case 'w': /* both dest and target */ | |
7974 | case 'E': /* coprocessor target register */ | |
7975 | case 'G': /* coprocessor destination register */ | |
7976 | case 'x': /* ignore register name */ | |
7977 | case 'z': /* must be zero register */ | |
4372b673 | 7978 | case 'U': /* destination register (clo/clz). */ |
252b5132 RH |
7979 | s_reset = s; |
7980 | if (s[0] == '$') | |
7981 | { | |
7982 | ||
3882b010 | 7983 | if (ISDIGIT (s[1])) |
252b5132 RH |
7984 | { |
7985 | ++s; | |
7986 | regno = 0; | |
7987 | do | |
7988 | { | |
7989 | regno *= 10; | |
7990 | regno += *s - '0'; | |
7991 | ++s; | |
7992 | } | |
3882b010 | 7993 | while (ISDIGIT (*s)); |
252b5132 RH |
7994 | if (regno > 31) |
7995 | as_bad (_("Invalid register number (%d)"), regno); | |
7996 | } | |
7997 | else if (*args == 'E' || *args == 'G') | |
7998 | goto notreg; | |
7999 | else | |
8000 | { | |
76db943d TS |
8001 | if (s[1] == 'r' && s[2] == 'a') |
8002 | { | |
8003 | s += 3; | |
8004 | regno = RA; | |
8005 | } | |
8006 | else if (s[1] == 'f' && s[2] == 'p') | |
252b5132 RH |
8007 | { |
8008 | s += 3; | |
8009 | regno = FP; | |
8010 | } | |
8011 | else if (s[1] == 's' && s[2] == 'p') | |
8012 | { | |
8013 | s += 3; | |
8014 | regno = SP; | |
8015 | } | |
8016 | else if (s[1] == 'g' && s[2] == 'p') | |
8017 | { | |
8018 | s += 3; | |
8019 | regno = GP; | |
8020 | } | |
8021 | else if (s[1] == 'a' && s[2] == 't') | |
8022 | { | |
8023 | s += 3; | |
8024 | regno = AT; | |
8025 | } | |
8026 | else if (s[1] == 'k' && s[2] == 't' && s[3] == '0') | |
8027 | { | |
8028 | s += 4; | |
8029 | regno = KT0; | |
8030 | } | |
8031 | else if (s[1] == 'k' && s[2] == 't' && s[3] == '1') | |
8032 | { | |
8033 | s += 4; | |
8034 | regno = KT1; | |
8035 | } | |
85b51719 TS |
8036 | else if (s[1] == 'z' && s[2] == 'e' && s[3] == 'r' && s[4] == 'o') |
8037 | { | |
8038 | s += 5; | |
8039 | regno = ZERO; | |
8040 | } | |
252b5132 RH |
8041 | else if (itbl_have_entries) |
8042 | { | |
8043 | char *p, *n; | |
d7ba4a77 | 8044 | unsigned long r; |
252b5132 | 8045 | |
d7ba4a77 | 8046 | p = s + 1; /* advance past '$' */ |
252b5132 RH |
8047 | n = itbl_get_field (&p); /* n is name */ |
8048 | ||
d7ba4a77 ILT |
8049 | /* See if this is a register defined in an |
8050 | itbl entry. */ | |
8051 | if (itbl_get_reg_val (n, &r)) | |
252b5132 RH |
8052 | { |
8053 | /* Get_field advances to the start of | |
8054 | the next field, so we need to back | |
d7ba4a77 | 8055 | rack to the end of the last field. */ |
bdaaa2e1 | 8056 | if (p) |
252b5132 | 8057 | s = p - 1; |
bdaaa2e1 | 8058 | else |
d7ba4a77 | 8059 | s = strchr (s, '\0'); |
252b5132 RH |
8060 | regno = r; |
8061 | } | |
8062 | else | |
8063 | goto notreg; | |
beae10d5 | 8064 | } |
252b5132 RH |
8065 | else |
8066 | goto notreg; | |
8067 | } | |
8068 | if (regno == AT | |
8069 | && ! mips_opts.noat | |
8070 | && *args != 'E' | |
8071 | && *args != 'G') | |
8072 | as_warn (_("Used $at without \".set noat\"")); | |
8073 | c = *args; | |
8074 | if (*s == ' ') | |
f9419b05 | 8075 | ++s; |
252b5132 RH |
8076 | if (args[1] != *s) |
8077 | { | |
8078 | if (c == 'r' || c == 'v' || c == 'w') | |
8079 | { | |
8080 | regno = lastregno; | |
8081 | s = s_reset; | |
f9419b05 | 8082 | ++args; |
252b5132 RH |
8083 | } |
8084 | } | |
8085 | /* 'z' only matches $0. */ | |
8086 | if (c == 'z' && regno != 0) | |
8087 | break; | |
8088 | ||
bdaaa2e1 KH |
8089 | /* Now that we have assembled one operand, we use the args string |
8090 | * to figure out where it goes in the instruction. */ | |
252b5132 RH |
8091 | switch (c) |
8092 | { | |
8093 | case 'r': | |
8094 | case 's': | |
8095 | case 'v': | |
8096 | case 'b': | |
38487616 | 8097 | ip->insn_opcode |= regno << OP_SH_RS; |
252b5132 RH |
8098 | break; |
8099 | case 'd': | |
8100 | case 'G': | |
38487616 | 8101 | ip->insn_opcode |= regno << OP_SH_RD; |
252b5132 | 8102 | break; |
4372b673 | 8103 | case 'U': |
38487616 TS |
8104 | ip->insn_opcode |= regno << OP_SH_RD; |
8105 | ip->insn_opcode |= regno << OP_SH_RT; | |
4372b673 | 8106 | break; |
252b5132 RH |
8107 | case 'w': |
8108 | case 't': | |
8109 | case 'E': | |
38487616 | 8110 | ip->insn_opcode |= regno << OP_SH_RT; |
252b5132 RH |
8111 | break; |
8112 | case 'x': | |
8113 | /* This case exists because on the r3000 trunc | |
8114 | expands into a macro which requires a gp | |
8115 | register. On the r6000 or r4000 it is | |
8116 | assembled into a single instruction which | |
8117 | ignores the register. Thus the insn version | |
8118 | is MIPS_ISA2 and uses 'x', and the macro | |
8119 | version is MIPS_ISA1 and uses 't'. */ | |
8120 | break; | |
8121 | case 'z': | |
8122 | /* This case is for the div instruction, which | |
8123 | acts differently if the destination argument | |
8124 | is $0. This only matches $0, and is checked | |
8125 | outside the switch. */ | |
8126 | break; | |
8127 | case 'D': | |
8128 | /* Itbl operand; not yet implemented. FIXME ?? */ | |
8129 | break; | |
8130 | /* What about all other operands like 'i', which | |
8131 | can be specified in the opcode table? */ | |
8132 | } | |
8133 | lastregno = regno; | |
8134 | continue; | |
8135 | } | |
8136 | notreg: | |
8137 | switch (*args++) | |
8138 | { | |
8139 | case 'r': | |
8140 | case 'v': | |
38487616 | 8141 | ip->insn_opcode |= lastregno << OP_SH_RS; |
252b5132 RH |
8142 | continue; |
8143 | case 'w': | |
38487616 | 8144 | ip->insn_opcode |= lastregno << OP_SH_RT; |
252b5132 RH |
8145 | continue; |
8146 | } | |
8147 | break; | |
8148 | ||
deec1734 CD |
8149 | case 'O': /* MDMX alignment immediate constant. */ |
8150 | my_getExpression (&imm_expr, s); | |
8151 | check_absolute_expr (ip, &imm_expr); | |
8152 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_ALN) | |
8153 | { | |
8154 | as_warn ("Improper align amount (%ld), using low bits", | |
8155 | (long) imm_expr.X_add_number); | |
8156 | imm_expr.X_add_number &= OP_MASK_ALN; | |
8157 | } | |
8158 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_ALN; | |
8159 | imm_expr.X_op = O_absent; | |
8160 | s = expr_end; | |
8161 | continue; | |
8162 | ||
8163 | case 'Q': /* MDMX vector, element sel, or const. */ | |
8164 | if (s[0] != '$') | |
8165 | { | |
8166 | /* MDMX Immediate. */ | |
8167 | my_getExpression (&imm_expr, s); | |
8168 | check_absolute_expr (ip, &imm_expr); | |
8169 | if ((unsigned long) imm_expr.X_add_number > OP_MASK_FT) | |
8170 | { | |
8171 | as_warn (_("Invalid MDMX Immediate (%ld)"), | |
8172 | (long) imm_expr.X_add_number); | |
8173 | imm_expr.X_add_number &= OP_MASK_FT; | |
8174 | } | |
8175 | imm_expr.X_add_number &= OP_MASK_FT; | |
8176 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) | |
8177 | ip->insn_opcode |= MDMX_FMTSEL_IMM_QH << OP_SH_VSEL; | |
8178 | else | |
8179 | ip->insn_opcode |= MDMX_FMTSEL_IMM_OB << OP_SH_VSEL; | |
8180 | ip->insn_opcode |= imm_expr.X_add_number << OP_SH_FT; | |
8181 | imm_expr.X_op = O_absent; | |
8182 | s = expr_end; | |
8183 | continue; | |
8184 | } | |
8185 | /* Not MDMX Immediate. Fall through. */ | |
8186 | case 'X': /* MDMX destination register. */ | |
8187 | case 'Y': /* MDMX source register. */ | |
8188 | case 'Z': /* MDMX target register. */ | |
8189 | is_mdmx = 1; | |
252b5132 RH |
8190 | case 'D': /* floating point destination register */ |
8191 | case 'S': /* floating point source register */ | |
8192 | case 'T': /* floating point target register */ | |
8193 | case 'R': /* floating point source register */ | |
8194 | case 'V': | |
8195 | case 'W': | |
8196 | s_reset = s; | |
deec1734 CD |
8197 | /* Accept $fN for FP and MDMX register numbers, and in |
8198 | addition accept $vN for MDMX register numbers. */ | |
8199 | if ((s[0] == '$' && s[1] == 'f' && ISDIGIT (s[2])) | |
8200 | || (is_mdmx != 0 && s[0] == '$' && s[1] == 'v' | |
8201 | && ISDIGIT (s[2]))) | |
252b5132 RH |
8202 | { |
8203 | s += 2; | |
8204 | regno = 0; | |
8205 | do | |
8206 | { | |
8207 | regno *= 10; | |
8208 | regno += *s - '0'; | |
8209 | ++s; | |
8210 | } | |
3882b010 | 8211 | while (ISDIGIT (*s)); |
252b5132 RH |
8212 | |
8213 | if (regno > 31) | |
8214 | as_bad (_("Invalid float register number (%d)"), regno); | |
8215 | ||
8216 | if ((regno & 1) != 0 | |
ca4e0257 | 8217 | && HAVE_32BIT_FPRS |
252b5132 RH |
8218 | && ! (strcmp (str, "mtc1") == 0 |
8219 | || strcmp (str, "mfc1") == 0 | |
8220 | || strcmp (str, "lwc1") == 0 | |
8221 | || strcmp (str, "swc1") == 0 | |
8222 | || strcmp (str, "l.s") == 0 | |
8223 | || strcmp (str, "s.s") == 0)) | |
8224 | as_warn (_("Float register should be even, was %d"), | |
8225 | regno); | |
8226 | ||
8227 | c = *args; | |
8228 | if (*s == ' ') | |
f9419b05 | 8229 | ++s; |
252b5132 RH |
8230 | if (args[1] != *s) |
8231 | { | |
8232 | if (c == 'V' || c == 'W') | |
8233 | { | |
8234 | regno = lastregno; | |
8235 | s = s_reset; | |
f9419b05 | 8236 | ++args; |
252b5132 RH |
8237 | } |
8238 | } | |
8239 | switch (c) | |
8240 | { | |
8241 | case 'D': | |
deec1734 | 8242 | case 'X': |
38487616 | 8243 | ip->insn_opcode |= regno << OP_SH_FD; |
252b5132 RH |
8244 | break; |
8245 | case 'V': | |
8246 | case 'S': | |
deec1734 | 8247 | case 'Y': |
38487616 | 8248 | ip->insn_opcode |= regno << OP_SH_FS; |
252b5132 | 8249 | break; |
deec1734 CD |
8250 | case 'Q': |
8251 | /* This is like 'Z', but also needs to fix the MDMX | |
8252 | vector/scalar select bits. Note that the | |
8253 | scalar immediate case is handled above. */ | |
8254 | if (*s == '[') | |
8255 | { | |
8256 | int is_qh = (ip->insn_opcode & (1 << OP_SH_VSEL)); | |
8257 | int max_el = (is_qh ? 3 : 7); | |
8258 | s++; | |
8259 | my_getExpression(&imm_expr, s); | |
8260 | check_absolute_expr (ip, &imm_expr); | |
8261 | s = expr_end; | |
8262 | if (imm_expr.X_add_number > max_el) | |
8263 | as_bad(_("Bad element selector %ld"), | |
8264 | (long) imm_expr.X_add_number); | |
8265 | imm_expr.X_add_number &= max_el; | |
8266 | ip->insn_opcode |= (imm_expr.X_add_number | |
8267 | << (OP_SH_VSEL + | |
8268 | (is_qh ? 2 : 1))); | |
8269 | if (*s != ']') | |
8270 | as_warn(_("Expecting ']' found '%s'"), s); | |
8271 | else | |
8272 | s++; | |
8273 | } | |
8274 | else | |
8275 | { | |
8276 | if (ip->insn_opcode & (OP_MASK_VSEL << OP_SH_VSEL)) | |
8277 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_QH | |
8278 | << OP_SH_VSEL); | |
8279 | else | |
8280 | ip->insn_opcode |= (MDMX_FMTSEL_VEC_OB << | |
8281 | OP_SH_VSEL); | |
8282 | } | |
8283 | /* Fall through */ | |
252b5132 RH |
8284 | case 'W': |
8285 | case 'T': | |
deec1734 | 8286 | case 'Z': |
38487616 | 8287 | ip->insn_opcode |= regno << OP_SH_FT; |
252b5132 RH |
8288 | break; |
8289 | case 'R': | |
38487616 | 8290 | ip->insn_opcode |= regno << OP_SH_FR; |
252b5132 RH |
8291 | break; |
8292 | } | |
8293 | lastregno = regno; | |
8294 | continue; | |
8295 | } | |
8296 | ||
252b5132 RH |
8297 | switch (*args++) |
8298 | { | |
8299 | case 'V': | |
38487616 | 8300 | ip->insn_opcode |= lastregno << OP_SH_FS; |
252b5132 RH |
8301 | continue; |
8302 | case 'W': | |
38487616 | 8303 | ip->insn_opcode |= lastregno << OP_SH_FT; |
252b5132 RH |
8304 | continue; |
8305 | } | |
8306 | break; | |
8307 | ||
8308 | case 'I': | |
8309 | my_getExpression (&imm_expr, s); | |
8310 | if (imm_expr.X_op != O_big | |
8311 | && imm_expr.X_op != O_constant) | |
8312 | insn_error = _("absolute expression required"); | |
8313 | s = expr_end; | |
8314 | continue; | |
8315 | ||
8316 | case 'A': | |
8317 | my_getExpression (&offset_expr, s); | |
f6688943 | 8318 | *imm_reloc = BFD_RELOC_32; |
252b5132 RH |
8319 | s = expr_end; |
8320 | continue; | |
8321 | ||
8322 | case 'F': | |
8323 | case 'L': | |
8324 | case 'f': | |
8325 | case 'l': | |
8326 | { | |
8327 | int f64; | |
ca4e0257 | 8328 | int using_gprs; |
252b5132 RH |
8329 | char *save_in; |
8330 | char *err; | |
8331 | unsigned char temp[8]; | |
8332 | int len; | |
8333 | unsigned int length; | |
8334 | segT seg; | |
8335 | subsegT subseg; | |
8336 | char *p; | |
8337 | ||
8338 | /* These only appear as the last operand in an | |
8339 | instruction, and every instruction that accepts | |
8340 | them in any variant accepts them in all variants. | |
8341 | This means we don't have to worry about backing out | |
8342 | any changes if the instruction does not match. | |
8343 | ||
8344 | The difference between them is the size of the | |
8345 | floating point constant and where it goes. For 'F' | |
8346 | and 'L' the constant is 64 bits; for 'f' and 'l' it | |
8347 | is 32 bits. Where the constant is placed is based | |
8348 | on how the MIPS assembler does things: | |
8349 | F -- .rdata | |
8350 | L -- .lit8 | |
8351 | f -- immediate value | |
8352 | l -- .lit4 | |
8353 | ||
8354 | The .lit4 and .lit8 sections are only used if | |
8355 | permitted by the -G argument. | |
8356 | ||
8357 | When generating embedded PIC code, we use the | |
8358 | .lit8 section but not the .lit4 section (we can do | |
8359 | .lit4 inline easily; we need to put .lit8 | |
8360 | somewhere in the data segment, and using .lit8 | |
8361 | permits the linker to eventually combine identical | |
ca4e0257 RS |
8362 | .lit8 entries). |
8363 | ||
8364 | The code below needs to know whether the target register | |
8365 | is 32 or 64 bits wide. It relies on the fact 'f' and | |
8366 | 'F' are used with GPR-based instructions and 'l' and | |
8367 | 'L' are used with FPR-based instructions. */ | |
252b5132 RH |
8368 | |
8369 | f64 = *args == 'F' || *args == 'L'; | |
ca4e0257 | 8370 | using_gprs = *args == 'F' || *args == 'f'; |
252b5132 RH |
8371 | |
8372 | save_in = input_line_pointer; | |
8373 | input_line_pointer = s; | |
8374 | err = md_atof (f64 ? 'd' : 'f', (char *) temp, &len); | |
8375 | length = len; | |
8376 | s = input_line_pointer; | |
8377 | input_line_pointer = save_in; | |
8378 | if (err != NULL && *err != '\0') | |
8379 | { | |
8380 | as_bad (_("Bad floating point constant: %s"), err); | |
8381 | memset (temp, '\0', sizeof temp); | |
8382 | length = f64 ? 8 : 4; | |
8383 | } | |
8384 | ||
156c2f8b | 8385 | assert (length == (unsigned) (f64 ? 8 : 4)); |
252b5132 RH |
8386 | |
8387 | if (*args == 'f' | |
8388 | || (*args == 'l' | |
8389 | && (! USE_GLOBAL_POINTER_OPT | |
8390 | || mips_pic == EMBEDDED_PIC | |
8391 | || g_switch_value < 4 | |
8392 | || (temp[0] == 0 && temp[1] == 0) | |
8393 | || (temp[2] == 0 && temp[3] == 0)))) | |
8394 | { | |
8395 | imm_expr.X_op = O_constant; | |
8396 | if (! target_big_endian) | |
8397 | imm_expr.X_add_number = bfd_getl32 (temp); | |
8398 | else | |
8399 | imm_expr.X_add_number = bfd_getb32 (temp); | |
8400 | } | |
8401 | else if (length > 4 | |
119d663a | 8402 | && ! mips_disable_float_construction |
ca4e0257 RS |
8403 | /* Constants can only be constructed in GPRs and |
8404 | copied to FPRs if the GPRs are at least as wide | |
8405 | as the FPRs. Force the constant into memory if | |
8406 | we are using 64-bit FPRs but the GPRs are only | |
8407 | 32 bits wide. */ | |
8408 | && (using_gprs | |
8409 | || ! (HAVE_64BIT_FPRS && HAVE_32BIT_GPRS)) | |
252b5132 RH |
8410 | && ((temp[0] == 0 && temp[1] == 0) |
8411 | || (temp[2] == 0 && temp[3] == 0)) | |
8412 | && ((temp[4] == 0 && temp[5] == 0) | |
8413 | || (temp[6] == 0 && temp[7] == 0))) | |
8414 | { | |
ca4e0257 RS |
8415 | /* The value is simple enough to load with a couple of |
8416 | instructions. If using 32-bit registers, set | |
8417 | imm_expr to the high order 32 bits and offset_expr to | |
8418 | the low order 32 bits. Otherwise, set imm_expr to | |
8419 | the entire 64 bit constant. */ | |
8420 | if (using_gprs ? HAVE_32BIT_GPRS : HAVE_32BIT_FPRS) | |
252b5132 RH |
8421 | { |
8422 | imm_expr.X_op = O_constant; | |
8423 | offset_expr.X_op = O_constant; | |
8424 | if (! target_big_endian) | |
8425 | { | |
8426 | imm_expr.X_add_number = bfd_getl32 (temp + 4); | |
8427 | offset_expr.X_add_number = bfd_getl32 (temp); | |
8428 | } | |
8429 | else | |
8430 | { | |
8431 | imm_expr.X_add_number = bfd_getb32 (temp); | |
8432 | offset_expr.X_add_number = bfd_getb32 (temp + 4); | |
8433 | } | |
8434 | if (offset_expr.X_add_number == 0) | |
8435 | offset_expr.X_op = O_absent; | |
8436 | } | |
8437 | else if (sizeof (imm_expr.X_add_number) > 4) | |
8438 | { | |
8439 | imm_expr.X_op = O_constant; | |
8440 | if (! target_big_endian) | |
8441 | imm_expr.X_add_number = bfd_getl64 (temp); | |
8442 | else | |
8443 | imm_expr.X_add_number = bfd_getb64 (temp); | |
8444 | } | |
8445 | else | |
8446 | { | |
8447 | imm_expr.X_op = O_big; | |
8448 | imm_expr.X_add_number = 4; | |
8449 | if (! target_big_endian) | |
8450 | { | |
8451 | generic_bignum[0] = bfd_getl16 (temp); | |
8452 | generic_bignum[1] = bfd_getl16 (temp + 2); | |
8453 | generic_bignum[2] = bfd_getl16 (temp + 4); | |
8454 | generic_bignum[3] = bfd_getl16 (temp + 6); | |
8455 | } | |
8456 | else | |
8457 | { | |
8458 | generic_bignum[0] = bfd_getb16 (temp + 6); | |
8459 | generic_bignum[1] = bfd_getb16 (temp + 4); | |
8460 | generic_bignum[2] = bfd_getb16 (temp + 2); | |
8461 | generic_bignum[3] = bfd_getb16 (temp); | |
8462 | } | |
8463 | } | |
8464 | } | |
8465 | else | |
8466 | { | |
8467 | const char *newname; | |
8468 | segT new_seg; | |
8469 | ||
8470 | /* Switch to the right section. */ | |
8471 | seg = now_seg; | |
8472 | subseg = now_subseg; | |
8473 | switch (*args) | |
8474 | { | |
8475 | default: /* unused default case avoids warnings. */ | |
8476 | case 'L': | |
8477 | newname = RDATA_SECTION_NAME; | |
bb2d6cd7 GK |
8478 | if ((USE_GLOBAL_POINTER_OPT && g_switch_value >= 8) |
8479 | || mips_pic == EMBEDDED_PIC) | |
252b5132 RH |
8480 | newname = ".lit8"; |
8481 | break; | |
8482 | case 'F': | |
bb2d6cd7 GK |
8483 | if (mips_pic == EMBEDDED_PIC) |
8484 | newname = ".lit8"; | |
8485 | else | |
8486 | newname = RDATA_SECTION_NAME; | |
252b5132 RH |
8487 | break; |
8488 | case 'l': | |
8489 | assert (!USE_GLOBAL_POINTER_OPT | |
8490 | || g_switch_value >= 4); | |
8491 | newname = ".lit4"; | |
8492 | break; | |
8493 | } | |
8494 | new_seg = subseg_new (newname, (subsegT) 0); | |
8495 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
8496 | bfd_set_section_flags (stdoutput, new_seg, | |
8497 | (SEC_ALLOC | |
8498 | | SEC_LOAD | |
8499 | | SEC_READONLY | |
8500 | | SEC_DATA)); | |
8501 | frag_align (*args == 'l' ? 2 : 3, 0, 0); | |
8502 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour | |
8503 | && strcmp (TARGET_OS, "elf") != 0) | |
8504 | record_alignment (new_seg, 4); | |
8505 | else | |
8506 | record_alignment (new_seg, *args == 'l' ? 2 : 3); | |
8507 | if (seg == now_seg) | |
8508 | as_bad (_("Can't use floating point insn in this section")); | |
8509 | ||
8510 | /* Set the argument to the current address in the | |
8511 | section. */ | |
8512 | offset_expr.X_op = O_symbol; | |
8513 | offset_expr.X_add_symbol = | |
8514 | symbol_new ("L0\001", now_seg, | |
8515 | (valueT) frag_now_fix (), frag_now); | |
8516 | offset_expr.X_add_number = 0; | |
8517 | ||
8518 | /* Put the floating point number into the section. */ | |
8519 | p = frag_more ((int) length); | |
8520 | memcpy (p, temp, length); | |
8521 | ||
8522 | /* Switch back to the original section. */ | |
8523 | subseg_set (seg, subseg); | |
8524 | } | |
8525 | } | |
8526 | continue; | |
8527 | ||
8528 | case 'i': /* 16 bit unsigned immediate */ | |
8529 | case 'j': /* 16 bit signed immediate */ | |
f6688943 | 8530 | *imm_reloc = BFD_RELOC_LO16; |
252b5132 | 8531 | c = my_getSmallExpression (&imm_expr, s); |
fb1b3232 | 8532 | if (c != S_EX_NONE) |
252b5132 | 8533 | { |
fb1b3232 | 8534 | if (c != S_EX_LO) |
252b5132 | 8535 | { |
fdb987ee RS |
8536 | if (c == S_EX_HI) |
8537 | { | |
8538 | *imm_reloc = BFD_RELOC_HI16_S; | |
8539 | imm_unmatched_hi = true; | |
8540 | } | |
ad8d3bb3 | 8541 | #ifdef OBJ_ELF |
fb1b3232 | 8542 | else if (c == S_EX_HIGHEST) |
98d3f06f | 8543 | *imm_reloc = BFD_RELOC_MIPS_HIGHEST; |
fb1b3232 | 8544 | else if (c == S_EX_HIGHER) |
98d3f06f | 8545 | *imm_reloc = BFD_RELOC_MIPS_HIGHER; |
ad8d3bb3 TS |
8546 | else if (c == S_EX_GP_REL) |
8547 | { | |
8548 | /* This occurs in NewABI only. */ | |
8549 | c = my_getSmallExpression (&imm_expr, s); | |
8550 | if (c != S_EX_NEG) | |
8551 | as_bad (_("bad composition of relocations")); | |
8552 | else | |
8553 | { | |
8554 | c = my_getSmallExpression (&imm_expr, s); | |
8555 | if (c != S_EX_LO) | |
8556 | as_bad (_("bad composition of relocations")); | |
8557 | else | |
8558 | { | |
8559 | imm_reloc[0] = BFD_RELOC_GPREL16; | |
8560 | imm_reloc[1] = BFD_RELOC_MIPS_SUB; | |
8561 | imm_reloc[2] = BFD_RELOC_LO16; | |
8562 | } | |
8563 | } | |
8564 | } | |
8565 | #endif | |
252b5132 | 8566 | else |
f6688943 | 8567 | *imm_reloc = BFD_RELOC_HI16; |
252b5132 RH |
8568 | } |
8569 | else if (imm_expr.X_op == O_constant) | |
8570 | imm_expr.X_add_number &= 0xffff; | |
8571 | } | |
8572 | if (*args == 'i') | |
8573 | { | |
fb1b3232 | 8574 | if ((c == S_EX_NONE && imm_expr.X_op != O_constant) |
252b5132 | 8575 | || ((imm_expr.X_add_number < 0 |
beae10d5 KH |
8576 | || imm_expr.X_add_number >= 0x10000) |
8577 | && imm_expr.X_op == O_constant)) | |
252b5132 RH |
8578 | { |
8579 | if (insn + 1 < &mips_opcodes[NUMOPCODES] && | |
8580 | !strcmp (insn->name, insn[1].name)) | |
8581 | break; | |
2ae7e77b AH |
8582 | if (imm_expr.X_op == O_constant |
8583 | || imm_expr.X_op == O_big) | |
252b5132 RH |
8584 | as_bad (_("16 bit expression not in range 0..65535")); |
8585 | } | |
8586 | } | |
8587 | else | |
8588 | { | |
8589 | int more; | |
8590 | offsetT max; | |
8591 | ||
8592 | /* The upper bound should be 0x8000, but | |
8593 | unfortunately the MIPS assembler accepts numbers | |
8594 | from 0x8000 to 0xffff and sign extends them, and | |
8595 | we want to be compatible. We only permit this | |
8596 | extended range for an instruction which does not | |
8597 | provide any further alternates, since those | |
8598 | alternates may handle other cases. People should | |
8599 | use the numbers they mean, rather than relying on | |
8600 | a mysterious sign extension. */ | |
8601 | more = (insn + 1 < &mips_opcodes[NUMOPCODES] && | |
8602 | strcmp (insn->name, insn[1].name) == 0); | |
8603 | if (more) | |
8604 | max = 0x8000; | |
8605 | else | |
8606 | max = 0x10000; | |
fb1b3232 | 8607 | if ((c == S_EX_NONE && imm_expr.X_op != O_constant) |
252b5132 | 8608 | || ((imm_expr.X_add_number < -0x8000 |
beae10d5 KH |
8609 | || imm_expr.X_add_number >= max) |
8610 | && imm_expr.X_op == O_constant) | |
252b5132 RH |
8611 | || (more |
8612 | && imm_expr.X_add_number < 0 | |
ca4e0257 | 8613 | && HAVE_64BIT_GPRS |
252b5132 RH |
8614 | && imm_expr.X_unsigned |
8615 | && sizeof (imm_expr.X_add_number) <= 4)) | |
8616 | { | |
8617 | if (more) | |
8618 | break; | |
2ae7e77b AH |
8619 | if (imm_expr.X_op == O_constant |
8620 | || imm_expr.X_op == O_big) | |
252b5132 RH |
8621 | as_bad (_("16 bit expression not in range -32768..32767")); |
8622 | } | |
8623 | } | |
8624 | s = expr_end; | |
8625 | continue; | |
8626 | ||
8627 | case 'o': /* 16 bit offset */ | |
8628 | c = my_getSmallExpression (&offset_expr, s); | |
8629 | ||
8630 | /* If this value won't fit into a 16 bit offset, then go | |
8631 | find a macro that will generate the 32 bit offset | |
afdbd6d0 | 8632 | code pattern. */ |
fb1b3232 | 8633 | if (c == S_EX_NONE |
252b5132 RH |
8634 | && (offset_expr.X_op != O_constant |
8635 | || offset_expr.X_add_number >= 0x8000 | |
afdbd6d0 | 8636 | || offset_expr.X_add_number < -0x8000)) |
252b5132 RH |
8637 | break; |
8638 | ||
fb1b3232 | 8639 | if (c == S_EX_HI) |
252b5132 RH |
8640 | { |
8641 | if (offset_expr.X_op != O_constant) | |
8642 | break; | |
8643 | offset_expr.X_add_number = | |
8644 | (offset_expr.X_add_number >> 16) & 0xffff; | |
8645 | } | |
f6688943 | 8646 | *offset_reloc = BFD_RELOC_LO16; |
252b5132 RH |
8647 | s = expr_end; |
8648 | continue; | |
8649 | ||
8650 | case 'p': /* pc relative offset */ | |
cb56d3d3 | 8651 | if (mips_pic == EMBEDDED_PIC) |
f6688943 | 8652 | *offset_reloc = BFD_RELOC_16_PCREL_S2; |
cb56d3d3 | 8653 | else |
f6688943 | 8654 | *offset_reloc = BFD_RELOC_16_PCREL; |
252b5132 RH |
8655 | my_getExpression (&offset_expr, s); |
8656 | s = expr_end; | |
8657 | continue; | |
8658 | ||
8659 | case 'u': /* upper 16 bits */ | |
8660 | c = my_getSmallExpression (&imm_expr, s); | |
f6688943 | 8661 | *imm_reloc = BFD_RELOC_LO16; |
e7d556df | 8662 | if (c != S_EX_NONE) |
252b5132 | 8663 | { |
fb1b3232 | 8664 | if (c != S_EX_LO) |
252b5132 | 8665 | { |
fdb987ee | 8666 | if (c == S_EX_HI) |
252b5132 | 8667 | { |
f6688943 | 8668 | *imm_reloc = BFD_RELOC_HI16_S; |
252b5132 RH |
8669 | imm_unmatched_hi = true; |
8670 | } | |
645dc66c TS |
8671 | #ifdef OBJ_ELF |
8672 | else if (c == S_EX_HIGHEST) | |
98d3f06f | 8673 | *imm_reloc = BFD_RELOC_MIPS_HIGHEST; |
ad8d3bb3 TS |
8674 | else if (c == S_EX_GP_REL) |
8675 | { | |
8676 | /* This occurs in NewABI only. */ | |
8677 | c = my_getSmallExpression (&imm_expr, s); | |
8678 | if (c != S_EX_NEG) | |
8679 | as_bad (_("bad composition of relocations")); | |
8680 | else | |
8681 | { | |
8682 | c = my_getSmallExpression (&imm_expr, s); | |
8683 | if (c != S_EX_HI) | |
8684 | as_bad (_("bad composition of relocations")); | |
8685 | else | |
8686 | { | |
8687 | imm_reloc[0] = BFD_RELOC_GPREL16; | |
8688 | imm_reloc[1] = BFD_RELOC_MIPS_SUB; | |
8689 | imm_reloc[2] = BFD_RELOC_HI16_S; | |
8690 | } | |
8691 | } | |
8692 | } | |
8693 | #endif | |
252b5132 | 8694 | else |
f6688943 | 8695 | *imm_reloc = BFD_RELOC_HI16; |
252b5132 RH |
8696 | } |
8697 | else if (imm_expr.X_op == O_constant) | |
8698 | imm_expr.X_add_number &= 0xffff; | |
8699 | } | |
fdb987ee RS |
8700 | else if (imm_expr.X_op == O_constant |
8701 | && (imm_expr.X_add_number < 0 | |
8702 | || imm_expr.X_add_number >= 0x10000)) | |
252b5132 RH |
8703 | as_bad (_("lui expression not in range 0..65535")); |
8704 | s = expr_end; | |
8705 | continue; | |
8706 | ||
8707 | case 'a': /* 26 bit address */ | |
8708 | my_getExpression (&offset_expr, s); | |
8709 | s = expr_end; | |
f6688943 | 8710 | *offset_reloc = BFD_RELOC_MIPS_JMP; |
252b5132 RH |
8711 | continue; |
8712 | ||
8713 | case 'N': /* 3 bit branch condition code */ | |
8714 | case 'M': /* 3 bit compare condition code */ | |
8715 | if (strncmp (s, "$fcc", 4) != 0) | |
8716 | break; | |
8717 | s += 4; | |
8718 | regno = 0; | |
8719 | do | |
8720 | { | |
8721 | regno *= 10; | |
8722 | regno += *s - '0'; | |
8723 | ++s; | |
8724 | } | |
3882b010 | 8725 | while (ISDIGIT (*s)); |
252b5132 RH |
8726 | if (regno > 7) |
8727 | as_bad (_("invalid condition code register $fcc%d"), regno); | |
8728 | if (*args == 'N') | |
8729 | ip->insn_opcode |= regno << OP_SH_BCC; | |
8730 | else | |
8731 | ip->insn_opcode |= regno << OP_SH_CCC; | |
beae10d5 | 8732 | continue; |
252b5132 | 8733 | |
156c2f8b NC |
8734 | case 'H': |
8735 | if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) | |
8736 | s += 2; | |
3882b010 | 8737 | if (ISDIGIT (*s)) |
156c2f8b NC |
8738 | { |
8739 | c = 0; | |
8740 | do | |
8741 | { | |
8742 | c *= 10; | |
8743 | c += *s - '0'; | |
8744 | ++s; | |
8745 | } | |
3882b010 | 8746 | while (ISDIGIT (*s)); |
156c2f8b NC |
8747 | } |
8748 | else | |
8749 | c = 8; /* Invalid sel value. */ | |
8750 | ||
8751 | if (c > 7) | |
8752 | as_bad (_("invalid coprocessor sub-selection value (0-7)")); | |
8753 | ip->insn_opcode |= c; | |
8754 | continue; | |
8755 | ||
252b5132 RH |
8756 | default: |
8757 | as_bad (_("bad char = '%c'\n"), *args); | |
8758 | internalError (); | |
8759 | } | |
8760 | break; | |
8761 | } | |
8762 | /* Args don't match. */ | |
8763 | if (insn + 1 < &mips_opcodes[NUMOPCODES] && | |
8764 | !strcmp (insn->name, insn[1].name)) | |
8765 | { | |
8766 | ++insn; | |
8767 | s = argsStart; | |
268f6bed | 8768 | insn_error = _("illegal operands"); |
252b5132 RH |
8769 | continue; |
8770 | } | |
268f6bed L |
8771 | if (save_c) |
8772 | *(--s) = save_c; | |
252b5132 RH |
8773 | insn_error = _("illegal operands"); |
8774 | return; | |
8775 | } | |
8776 | } | |
8777 | ||
8778 | /* This routine assembles an instruction into its binary format when | |
8779 | assembling for the mips16. As a side effect, it sets one of the | |
8780 | global variables imm_reloc or offset_reloc to the type of | |
8781 | relocation to do if one of the operands is an address expression. | |
8782 | It also sets mips16_small and mips16_ext if the user explicitly | |
8783 | requested a small or extended instruction. */ | |
8784 | ||
8785 | static void | |
8786 | mips16_ip (str, ip) | |
8787 | char *str; | |
8788 | struct mips_cl_insn *ip; | |
8789 | { | |
8790 | char *s; | |
8791 | const char *args; | |
8792 | struct mips_opcode *insn; | |
8793 | char *argsstart; | |
8794 | unsigned int regno; | |
8795 | unsigned int lastregno = 0; | |
8796 | char *s_reset; | |
8797 | ||
8798 | insn_error = NULL; | |
8799 | ||
8800 | mips16_small = false; | |
8801 | mips16_ext = false; | |
8802 | ||
3882b010 | 8803 | for (s = str; ISLOWER (*s); ++s) |
252b5132 RH |
8804 | ; |
8805 | switch (*s) | |
8806 | { | |
8807 | case '\0': | |
8808 | break; | |
8809 | ||
8810 | case ' ': | |
8811 | *s++ = '\0'; | |
8812 | break; | |
8813 | ||
8814 | case '.': | |
8815 | if (s[1] == 't' && s[2] == ' ') | |
8816 | { | |
8817 | *s = '\0'; | |
8818 | mips16_small = true; | |
8819 | s += 3; | |
8820 | break; | |
8821 | } | |
8822 | else if (s[1] == 'e' && s[2] == ' ') | |
8823 | { | |
8824 | *s = '\0'; | |
8825 | mips16_ext = true; | |
8826 | s += 3; | |
8827 | break; | |
8828 | } | |
8829 | /* Fall through. */ | |
8830 | default: | |
8831 | insn_error = _("unknown opcode"); | |
8832 | return; | |
8833 | } | |
8834 | ||
8835 | if (mips_opts.noautoextend && ! mips16_ext) | |
8836 | mips16_small = true; | |
8837 | ||
8838 | if ((insn = (struct mips_opcode *) hash_find (mips16_op_hash, str)) == NULL) | |
8839 | { | |
8840 | insn_error = _("unrecognized opcode"); | |
8841 | return; | |
8842 | } | |
8843 | ||
8844 | argsstart = s; | |
8845 | for (;;) | |
8846 | { | |
8847 | assert (strcmp (insn->name, str) == 0); | |
8848 | ||
8849 | ip->insn_mo = insn; | |
8850 | ip->insn_opcode = insn->match; | |
8851 | ip->use_extend = false; | |
8852 | imm_expr.X_op = O_absent; | |
f6688943 TS |
8853 | imm_reloc[0] = BFD_RELOC_UNUSED; |
8854 | imm_reloc[1] = BFD_RELOC_UNUSED; | |
8855 | imm_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 | 8856 | offset_expr.X_op = O_absent; |
f6688943 TS |
8857 | offset_reloc[0] = BFD_RELOC_UNUSED; |
8858 | offset_reloc[1] = BFD_RELOC_UNUSED; | |
8859 | offset_reloc[2] = BFD_RELOC_UNUSED; | |
252b5132 RH |
8860 | for (args = insn->args; 1; ++args) |
8861 | { | |
8862 | int c; | |
8863 | ||
8864 | if (*s == ' ') | |
8865 | ++s; | |
8866 | ||
8867 | /* In this switch statement we call break if we did not find | |
8868 | a match, continue if we did find a match, or return if we | |
8869 | are done. */ | |
8870 | ||
8871 | c = *args; | |
8872 | switch (c) | |
8873 | { | |
8874 | case '\0': | |
8875 | if (*s == '\0') | |
8876 | { | |
8877 | /* Stuff the immediate value in now, if we can. */ | |
8878 | if (imm_expr.X_op == O_constant | |
f6688943 | 8879 | && *imm_reloc > BFD_RELOC_UNUSED |
252b5132 RH |
8880 | && insn->pinfo != INSN_MACRO) |
8881 | { | |
c4e7957c | 8882 | mips16_immed (NULL, 0, *imm_reloc - BFD_RELOC_UNUSED, |
252b5132 RH |
8883 | imm_expr.X_add_number, true, mips16_small, |
8884 | mips16_ext, &ip->insn_opcode, | |
8885 | &ip->use_extend, &ip->extend); | |
8886 | imm_expr.X_op = O_absent; | |
f6688943 | 8887 | *imm_reloc = BFD_RELOC_UNUSED; |
252b5132 RH |
8888 | } |
8889 | ||
8890 | return; | |
8891 | } | |
8892 | break; | |
8893 | ||
8894 | case ',': | |
8895 | if (*s++ == c) | |
8896 | continue; | |
8897 | s--; | |
8898 | switch (*++args) | |
8899 | { | |
8900 | case 'v': | |
8901 | ip->insn_opcode |= lastregno << MIPS16OP_SH_RX; | |
8902 | continue; | |
8903 | case 'w': | |
8904 | ip->insn_opcode |= lastregno << MIPS16OP_SH_RY; | |
8905 | continue; | |
8906 | } | |
8907 | break; | |
8908 | ||
8909 | case '(': | |
8910 | case ')': | |
8911 | if (*s++ == c) | |
8912 | continue; | |
8913 | break; | |
8914 | ||
8915 | case 'v': | |
8916 | case 'w': | |
8917 | if (s[0] != '$') | |
8918 | { | |
8919 | if (c == 'v') | |
8920 | ip->insn_opcode |= lastregno << MIPS16OP_SH_RX; | |
8921 | else | |
8922 | ip->insn_opcode |= lastregno << MIPS16OP_SH_RY; | |
8923 | ++args; | |
8924 | continue; | |
8925 | } | |
8926 | /* Fall through. */ | |
8927 | case 'x': | |
8928 | case 'y': | |
8929 | case 'z': | |
8930 | case 'Z': | |
8931 | case '0': | |
8932 | case 'S': | |
8933 | case 'R': | |
8934 | case 'X': | |
8935 | case 'Y': | |
8936 | if (s[0] != '$') | |
8937 | break; | |
8938 | s_reset = s; | |
3882b010 | 8939 | if (ISDIGIT (s[1])) |
252b5132 RH |
8940 | { |
8941 | ++s; | |
8942 | regno = 0; | |
8943 | do | |
8944 | { | |
8945 | regno *= 10; | |
8946 | regno += *s - '0'; | |
8947 | ++s; | |
8948 | } | |
3882b010 | 8949 | while (ISDIGIT (*s)); |
252b5132 RH |
8950 | if (regno > 31) |
8951 | { | |
8952 | as_bad (_("invalid register number (%d)"), regno); | |
8953 | regno = 2; | |
8954 | } | |
8955 | } | |
8956 | else | |
8957 | { | |
76db943d TS |
8958 | if (s[1] == 'r' && s[2] == 'a') |
8959 | { | |
8960 | s += 3; | |
8961 | regno = RA; | |
8962 | } | |
8963 | else if (s[1] == 'f' && s[2] == 'p') | |
252b5132 RH |
8964 | { |
8965 | s += 3; | |
8966 | regno = FP; | |
8967 | } | |
8968 | else if (s[1] == 's' && s[2] == 'p') | |
8969 | { | |
8970 | s += 3; | |
8971 | regno = SP; | |
8972 | } | |
8973 | else if (s[1] == 'g' && s[2] == 'p') | |
8974 | { | |
8975 | s += 3; | |
8976 | regno = GP; | |
8977 | } | |
8978 | else if (s[1] == 'a' && s[2] == 't') | |
8979 | { | |
8980 | s += 3; | |
8981 | regno = AT; | |
8982 | } | |
8983 | else if (s[1] == 'k' && s[2] == 't' && s[3] == '0') | |
8984 | { | |
8985 | s += 4; | |
8986 | regno = KT0; | |
8987 | } | |
8988 | else if (s[1] == 'k' && s[2] == 't' && s[3] == '1') | |
8989 | { | |
8990 | s += 4; | |
8991 | regno = KT1; | |
8992 | } | |
85b51719 TS |
8993 | else if (s[1] == 'z' && s[2] == 'e' && s[3] == 'r' && s[4] == 'o') |
8994 | { | |
8995 | s += 5; | |
8996 | regno = ZERO; | |
8997 | } | |
252b5132 RH |
8998 | else |
8999 | break; | |
9000 | } | |
9001 | ||
9002 | if (*s == ' ') | |
9003 | ++s; | |
9004 | if (args[1] != *s) | |
9005 | { | |
9006 | if (c == 'v' || c == 'w') | |
9007 | { | |
9008 | regno = mips16_to_32_reg_map[lastregno]; | |
9009 | s = s_reset; | |
f9419b05 | 9010 | ++args; |
252b5132 RH |
9011 | } |
9012 | } | |
9013 | ||
9014 | switch (c) | |
9015 | { | |
9016 | case 'x': | |
9017 | case 'y': | |
9018 | case 'z': | |
9019 | case 'v': | |
9020 | case 'w': | |
9021 | case 'Z': | |
9022 | regno = mips32_to_16_reg_map[regno]; | |
9023 | break; | |
9024 | ||
9025 | case '0': | |
9026 | if (regno != 0) | |
9027 | regno = ILLEGAL_REG; | |
9028 | break; | |
9029 | ||
9030 | case 'S': | |
9031 | if (regno != SP) | |
9032 | regno = ILLEGAL_REG; | |
9033 | break; | |
9034 | ||
9035 | case 'R': | |
9036 | if (regno != RA) | |
9037 | regno = ILLEGAL_REG; | |
9038 | break; | |
9039 | ||
9040 | case 'X': | |
9041 | case 'Y': | |
9042 | if (regno == AT && ! mips_opts.noat) | |
9043 | as_warn (_("used $at without \".set noat\"")); | |
9044 | break; | |
9045 | ||
9046 | default: | |
9047 | internalError (); | |
9048 | } | |
9049 | ||
9050 | if (regno == ILLEGAL_REG) | |
9051 | break; | |
9052 | ||
9053 | switch (c) | |
9054 | { | |
9055 | case 'x': | |
9056 | case 'v': | |
9057 | ip->insn_opcode |= regno << MIPS16OP_SH_RX; | |
9058 | break; | |
9059 | case 'y': | |
9060 | case 'w': | |
9061 | ip->insn_opcode |= regno << MIPS16OP_SH_RY; | |
9062 | break; | |
9063 | case 'z': | |
9064 | ip->insn_opcode |= regno << MIPS16OP_SH_RZ; | |
9065 | break; | |
9066 | case 'Z': | |
9067 | ip->insn_opcode |= regno << MIPS16OP_SH_MOVE32Z; | |
9068 | case '0': | |
9069 | case 'S': | |
9070 | case 'R': | |
9071 | break; | |
9072 | case 'X': | |
9073 | ip->insn_opcode |= regno << MIPS16OP_SH_REGR32; | |
9074 | break; | |
9075 | case 'Y': | |
9076 | regno = ((regno & 7) << 2) | ((regno & 0x18) >> 3); | |
9077 | ip->insn_opcode |= regno << MIPS16OP_SH_REG32R; | |
9078 | break; | |
9079 | default: | |
9080 | internalError (); | |
9081 | } | |
9082 | ||
9083 | lastregno = regno; | |
9084 | continue; | |
9085 | ||
9086 | case 'P': | |
9087 | if (strncmp (s, "$pc", 3) == 0) | |
9088 | { | |
9089 | s += 3; | |
9090 | continue; | |
9091 | } | |
9092 | break; | |
9093 | ||
9094 | case '<': | |
9095 | case '>': | |
9096 | case '[': | |
9097 | case ']': | |
9098 | case '4': | |
9099 | case '5': | |
9100 | case 'H': | |
9101 | case 'W': | |
9102 | case 'D': | |
9103 | case 'j': | |
9104 | case '8': | |
9105 | case 'V': | |
9106 | case 'C': | |
9107 | case 'U': | |
9108 | case 'k': | |
9109 | case 'K': | |
9110 | if (s[0] == '%' | |
9111 | && strncmp (s + 1, "gprel(", sizeof "gprel(" - 1) == 0) | |
9112 | { | |
9113 | /* This is %gprel(SYMBOL). We need to read SYMBOL, | |
9114 | and generate the appropriate reloc. If the text | |
9115 | inside %gprel is not a symbol name with an | |
9116 | optional offset, then we generate a normal reloc | |
9117 | and will probably fail later. */ | |
9118 | my_getExpression (&imm_expr, s + sizeof "%gprel" - 1); | |
9119 | if (imm_expr.X_op == O_symbol) | |
9120 | { | |
9121 | mips16_ext = true; | |
f6688943 | 9122 | *imm_reloc = BFD_RELOC_MIPS16_GPREL; |
252b5132 RH |
9123 | s = expr_end; |
9124 | ip->use_extend = true; | |
9125 | ip->extend = 0; | |
9126 | continue; | |
9127 | } | |
9128 | } | |
9129 | else | |
9130 | { | |
9131 | /* Just pick up a normal expression. */ | |
9132 | my_getExpression (&imm_expr, s); | |
9133 | } | |
9134 | ||
9135 | if (imm_expr.X_op == O_register) | |
9136 | { | |
9137 | /* What we thought was an expression turned out to | |
9138 | be a register. */ | |
9139 | ||
9140 | if (s[0] == '(' && args[1] == '(') | |
9141 | { | |
9142 | /* It looks like the expression was omitted | |
9143 | before a register indirection, which means | |
9144 | that the expression is implicitly zero. We | |
9145 | still set up imm_expr, so that we handle | |
9146 | explicit extensions correctly. */ | |
9147 | imm_expr.X_op = O_constant; | |
9148 | imm_expr.X_add_number = 0; | |
f6688943 | 9149 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
9150 | continue; |
9151 | } | |
9152 | ||
9153 | break; | |
9154 | } | |
9155 | ||
9156 | /* We need to relax this instruction. */ | |
f6688943 | 9157 | *imm_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
9158 | s = expr_end; |
9159 | continue; | |
9160 | ||
9161 | case 'p': | |
9162 | case 'q': | |
9163 | case 'A': | |
9164 | case 'B': | |
9165 | case 'E': | |
9166 | /* We use offset_reloc rather than imm_reloc for the PC | |
9167 | relative operands. This lets macros with both | |
9168 | immediate and address operands work correctly. */ | |
9169 | my_getExpression (&offset_expr, s); | |
9170 | ||
9171 | if (offset_expr.X_op == O_register) | |
9172 | break; | |
9173 | ||
9174 | /* We need to relax this instruction. */ | |
f6688943 | 9175 | *offset_reloc = (int) BFD_RELOC_UNUSED + c; |
252b5132 RH |
9176 | s = expr_end; |
9177 | continue; | |
9178 | ||
9179 | case '6': /* break code */ | |
9180 | my_getExpression (&imm_expr, s); | |
9181 | check_absolute_expr (ip, &imm_expr); | |
9182 | if ((unsigned long) imm_expr.X_add_number > 63) | |
9183 | { | |
9184 | as_warn (_("Invalid value for `%s' (%lu)"), | |
9185 | ip->insn_mo->name, | |
9186 | (unsigned long) imm_expr.X_add_number); | |
9187 | imm_expr.X_add_number &= 0x3f; | |
9188 | } | |
9189 | ip->insn_opcode |= imm_expr.X_add_number << MIPS16OP_SH_IMM6; | |
9190 | imm_expr.X_op = O_absent; | |
9191 | s = expr_end; | |
9192 | continue; | |
9193 | ||
9194 | case 'a': /* 26 bit address */ | |
9195 | my_getExpression (&offset_expr, s); | |
9196 | s = expr_end; | |
f6688943 | 9197 | *offset_reloc = BFD_RELOC_MIPS16_JMP; |
252b5132 RH |
9198 | ip->insn_opcode <<= 16; |
9199 | continue; | |
9200 | ||
9201 | case 'l': /* register list for entry macro */ | |
9202 | case 'L': /* register list for exit macro */ | |
9203 | { | |
9204 | int mask; | |
9205 | ||
9206 | if (c == 'l') | |
9207 | mask = 0; | |
9208 | else | |
9209 | mask = 7 << 3; | |
9210 | while (*s != '\0') | |
9211 | { | |
9212 | int freg, reg1, reg2; | |
9213 | ||
9214 | while (*s == ' ' || *s == ',') | |
9215 | ++s; | |
9216 | if (*s != '$') | |
9217 | { | |
9218 | as_bad (_("can't parse register list")); | |
9219 | break; | |
9220 | } | |
9221 | ++s; | |
9222 | if (*s != 'f') | |
9223 | freg = 0; | |
9224 | else | |
9225 | { | |
9226 | freg = 1; | |
9227 | ++s; | |
9228 | } | |
9229 | reg1 = 0; | |
3882b010 | 9230 | while (ISDIGIT (*s)) |
252b5132 RH |
9231 | { |
9232 | reg1 *= 10; | |
9233 | reg1 += *s - '0'; | |
9234 | ++s; | |
9235 | } | |
9236 | if (*s == ' ') | |
9237 | ++s; | |
9238 | if (*s != '-') | |
9239 | reg2 = reg1; | |
9240 | else | |
9241 | { | |
9242 | ++s; | |
9243 | if (*s != '$') | |
9244 | break; | |
9245 | ++s; | |
9246 | if (freg) | |
9247 | { | |
9248 | if (*s == 'f') | |
9249 | ++s; | |
9250 | else | |
9251 | { | |
9252 | as_bad (_("invalid register list")); | |
9253 | break; | |
9254 | } | |
9255 | } | |
9256 | reg2 = 0; | |
3882b010 | 9257 | while (ISDIGIT (*s)) |
252b5132 RH |
9258 | { |
9259 | reg2 *= 10; | |
9260 | reg2 += *s - '0'; | |
9261 | ++s; | |
9262 | } | |
9263 | } | |
9264 | if (freg && reg1 == 0 && reg2 == 0 && c == 'L') | |
9265 | { | |
9266 | mask &= ~ (7 << 3); | |
9267 | mask |= 5 << 3; | |
9268 | } | |
9269 | else if (freg && reg1 == 0 && reg2 == 1 && c == 'L') | |
9270 | { | |
9271 | mask &= ~ (7 << 3); | |
9272 | mask |= 6 << 3; | |
9273 | } | |
9274 | else if (reg1 == 4 && reg2 >= 4 && reg2 <= 7 && c != 'L') | |
9275 | mask |= (reg2 - 3) << 3; | |
9276 | else if (reg1 == 16 && reg2 >= 16 && reg2 <= 17) | |
9277 | mask |= (reg2 - 15) << 1; | |
f9419b05 | 9278 | else if (reg1 == RA && reg2 == RA) |
252b5132 RH |
9279 | mask |= 1; |
9280 | else | |
9281 | { | |
9282 | as_bad (_("invalid register list")); | |
9283 | break; | |
9284 | } | |
9285 | } | |
9286 | /* The mask is filled in in the opcode table for the | |
9287 | benefit of the disassembler. We remove it before | |
9288 | applying the actual mask. */ | |
9289 | ip->insn_opcode &= ~ ((7 << 3) << MIPS16OP_SH_IMM6); | |
9290 | ip->insn_opcode |= mask << MIPS16OP_SH_IMM6; | |
9291 | } | |
9292 | continue; | |
9293 | ||
9294 | case 'e': /* extend code */ | |
9295 | my_getExpression (&imm_expr, s); | |
9296 | check_absolute_expr (ip, &imm_expr); | |
9297 | if ((unsigned long) imm_expr.X_add_number > 0x7ff) | |
9298 | { | |
9299 | as_warn (_("Invalid value for `%s' (%lu)"), | |
9300 | ip->insn_mo->name, | |
9301 | (unsigned long) imm_expr.X_add_number); | |
9302 | imm_expr.X_add_number &= 0x7ff; | |
9303 | } | |
9304 | ip->insn_opcode |= imm_expr.X_add_number; | |
9305 | imm_expr.X_op = O_absent; | |
9306 | s = expr_end; | |
9307 | continue; | |
9308 | ||
9309 | default: | |
9310 | internalError (); | |
9311 | } | |
9312 | break; | |
9313 | } | |
9314 | ||
9315 | /* Args don't match. */ | |
9316 | if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes] && | |
9317 | strcmp (insn->name, insn[1].name) == 0) | |
9318 | { | |
9319 | ++insn; | |
9320 | s = argsstart; | |
9321 | continue; | |
9322 | } | |
9323 | ||
9324 | insn_error = _("illegal operands"); | |
9325 | ||
9326 | return; | |
9327 | } | |
9328 | } | |
9329 | ||
9330 | /* This structure holds information we know about a mips16 immediate | |
9331 | argument type. */ | |
9332 | ||
e972090a NC |
9333 | struct mips16_immed_operand |
9334 | { | |
252b5132 RH |
9335 | /* The type code used in the argument string in the opcode table. */ |
9336 | int type; | |
9337 | /* The number of bits in the short form of the opcode. */ | |
9338 | int nbits; | |
9339 | /* The number of bits in the extended form of the opcode. */ | |
9340 | int extbits; | |
9341 | /* The amount by which the short form is shifted when it is used; | |
9342 | for example, the sw instruction has a shift count of 2. */ | |
9343 | int shift; | |
9344 | /* The amount by which the short form is shifted when it is stored | |
9345 | into the instruction code. */ | |
9346 | int op_shift; | |
9347 | /* Non-zero if the short form is unsigned. */ | |
9348 | int unsp; | |
9349 | /* Non-zero if the extended form is unsigned. */ | |
9350 | int extu; | |
9351 | /* Non-zero if the value is PC relative. */ | |
9352 | int pcrel; | |
9353 | }; | |
9354 | ||
9355 | /* The mips16 immediate operand types. */ | |
9356 | ||
9357 | static const struct mips16_immed_operand mips16_immed_operands[] = | |
9358 | { | |
9359 | { '<', 3, 5, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
9360 | { '>', 3, 5, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
9361 | { '[', 3, 6, 0, MIPS16OP_SH_RZ, 1, 1, 0 }, | |
9362 | { ']', 3, 6, 0, MIPS16OP_SH_RX, 1, 1, 0 }, | |
9363 | { '4', 4, 15, 0, MIPS16OP_SH_IMM4, 0, 0, 0 }, | |
9364 | { '5', 5, 16, 0, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
9365 | { 'H', 5, 16, 1, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
9366 | { 'W', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
9367 | { 'D', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 0 }, | |
9368 | { 'j', 5, 16, 0, MIPS16OP_SH_IMM5, 0, 0, 0 }, | |
9369 | { '8', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
9370 | { 'V', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
9371 | { 'C', 8, 16, 3, MIPS16OP_SH_IMM8, 1, 0, 0 }, | |
9372 | { 'U', 8, 16, 0, MIPS16OP_SH_IMM8, 1, 1, 0 }, | |
9373 | { 'k', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
9374 | { 'K', 8, 16, 3, MIPS16OP_SH_IMM8, 0, 0, 0 }, | |
9375 | { 'p', 8, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
9376 | { 'q', 11, 16, 0, MIPS16OP_SH_IMM8, 0, 0, 1 }, | |
9377 | { 'A', 8, 16, 2, MIPS16OP_SH_IMM8, 1, 0, 1 }, | |
9378 | { 'B', 5, 16, 3, MIPS16OP_SH_IMM5, 1, 0, 1 }, | |
9379 | { 'E', 5, 16, 2, MIPS16OP_SH_IMM5, 1, 0, 1 } | |
9380 | }; | |
9381 | ||
9382 | #define MIPS16_NUM_IMMED \ | |
9383 | (sizeof mips16_immed_operands / sizeof mips16_immed_operands[0]) | |
9384 | ||
9385 | /* Handle a mips16 instruction with an immediate value. This or's the | |
9386 | small immediate value into *INSN. It sets *USE_EXTEND to indicate | |
9387 | whether an extended value is needed; if one is needed, it sets | |
9388 | *EXTEND to the value. The argument type is TYPE. The value is VAL. | |
9389 | If SMALL is true, an unextended opcode was explicitly requested. | |
9390 | If EXT is true, an extended opcode was explicitly requested. If | |
9391 | WARN is true, warn if EXT does not match reality. */ | |
9392 | ||
9393 | static void | |
9394 | mips16_immed (file, line, type, val, warn, small, ext, insn, use_extend, | |
9395 | extend) | |
9396 | char *file; | |
9397 | unsigned int line; | |
9398 | int type; | |
9399 | offsetT val; | |
9400 | boolean warn; | |
9401 | boolean small; | |
9402 | boolean ext; | |
9403 | unsigned long *insn; | |
9404 | boolean *use_extend; | |
9405 | unsigned short *extend; | |
9406 | { | |
9407 | register const struct mips16_immed_operand *op; | |
9408 | int mintiny, maxtiny; | |
9409 | boolean needext; | |
9410 | ||
9411 | op = mips16_immed_operands; | |
9412 | while (op->type != type) | |
9413 | { | |
9414 | ++op; | |
9415 | assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); | |
9416 | } | |
9417 | ||
9418 | if (op->unsp) | |
9419 | { | |
9420 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
9421 | { | |
9422 | mintiny = 1; | |
9423 | maxtiny = 1 << op->nbits; | |
9424 | } | |
9425 | else | |
9426 | { | |
9427 | mintiny = 0; | |
9428 | maxtiny = (1 << op->nbits) - 1; | |
9429 | } | |
9430 | } | |
9431 | else | |
9432 | { | |
9433 | mintiny = - (1 << (op->nbits - 1)); | |
9434 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
9435 | } | |
9436 | ||
9437 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
9438 | if (type == 'p' || type == 'q') | |
9439 | val /= 2; | |
9440 | ||
9441 | if ((val & ((1 << op->shift) - 1)) != 0 | |
9442 | || val < (mintiny << op->shift) | |
9443 | || val > (maxtiny << op->shift)) | |
9444 | needext = true; | |
9445 | else | |
9446 | needext = false; | |
9447 | ||
9448 | if (warn && ext && ! needext) | |
beae10d5 KH |
9449 | as_warn_where (file, line, |
9450 | _("extended operand requested but not required")); | |
252b5132 RH |
9451 | if (small && needext) |
9452 | as_bad_where (file, line, _("invalid unextended operand value")); | |
9453 | ||
9454 | if (small || (! ext && ! needext)) | |
9455 | { | |
9456 | int insnval; | |
9457 | ||
9458 | *use_extend = false; | |
9459 | insnval = ((val >> op->shift) & ((1 << op->nbits) - 1)); | |
9460 | insnval <<= op->op_shift; | |
9461 | *insn |= insnval; | |
9462 | } | |
9463 | else | |
9464 | { | |
9465 | long minext, maxext; | |
9466 | int extval; | |
9467 | ||
9468 | if (op->extu) | |
9469 | { | |
9470 | minext = 0; | |
9471 | maxext = (1 << op->extbits) - 1; | |
9472 | } | |
9473 | else | |
9474 | { | |
9475 | minext = - (1 << (op->extbits - 1)); | |
9476 | maxext = (1 << (op->extbits - 1)) - 1; | |
9477 | } | |
9478 | if (val < minext || val > maxext) | |
9479 | as_bad_where (file, line, | |
9480 | _("operand value out of range for instruction")); | |
9481 | ||
9482 | *use_extend = true; | |
9483 | if (op->extbits == 16) | |
9484 | { | |
9485 | extval = ((val >> 11) & 0x1f) | (val & 0x7e0); | |
9486 | val &= 0x1f; | |
9487 | } | |
9488 | else if (op->extbits == 15) | |
9489 | { | |
9490 | extval = ((val >> 11) & 0xf) | (val & 0x7f0); | |
9491 | val &= 0xf; | |
9492 | } | |
9493 | else | |
9494 | { | |
9495 | extval = ((val & 0x1f) << 6) | (val & 0x20); | |
9496 | val = 0; | |
9497 | } | |
9498 | ||
9499 | *extend = (unsigned short) extval; | |
9500 | *insn |= val; | |
9501 | } | |
9502 | } | |
9503 | \f | |
ad8d3bb3 TS |
9504 | static struct percent_op_match |
9505 | { | |
9506 | const char *str; | |
9507 | const enum small_ex_type type; | |
9508 | } percent_op[] = | |
9509 | { | |
ad8d3bb3 TS |
9510 | {"%lo", S_EX_LO}, |
9511 | #ifdef OBJ_ELF | |
394f9b3a TS |
9512 | {"%call_hi", S_EX_CALL_HI}, |
9513 | {"%call_lo", S_EX_CALL_LO}, | |
ad8d3bb3 TS |
9514 | {"%call16", S_EX_CALL16}, |
9515 | {"%got_disp", S_EX_GOT_DISP}, | |
9516 | {"%got_page", S_EX_GOT_PAGE}, | |
9517 | {"%got_ofst", S_EX_GOT_OFST}, | |
9518 | {"%got_hi", S_EX_GOT_HI}, | |
9519 | {"%got_lo", S_EX_GOT_LO}, | |
394f9b3a TS |
9520 | {"%got", S_EX_GOT}, |
9521 | {"%gp_rel", S_EX_GP_REL}, | |
9522 | {"%half", S_EX_HALF}, | |
ad8d3bb3 | 9523 | {"%highest", S_EX_HIGHEST}, |
394f9b3a TS |
9524 | {"%higher", S_EX_HIGHER}, |
9525 | {"%neg", S_EX_NEG}, | |
ad8d3bb3 | 9526 | #endif |
394f9b3a | 9527 | {"%hi", S_EX_HI} |
ad8d3bb3 TS |
9528 | }; |
9529 | ||
9530 | /* Parse small expression input. STR gets adjusted to eat up whitespace. | |
9531 | It detects valid "%percent_op(...)" and "($reg)" strings. Percent_op's | |
9532 | can be nested, this is handled by blanking the innermost, parsing the | |
9533 | rest by subsequent calls. */ | |
252b5132 RH |
9534 | |
9535 | static int | |
ad8d3bb3 TS |
9536 | my_getSmallParser (str, len, nestlevel) |
9537 | char **str; | |
9538 | unsigned int *len; | |
9539 | int *nestlevel; | |
252b5132 | 9540 | { |
ad8d3bb3 TS |
9541 | *len = 0; |
9542 | *str += strspn (*str, " \t"); | |
394f9b3a | 9543 | /* Check for expression in parentheses. */ |
ad8d3bb3 | 9544 | if (**str == '(') |
252b5132 | 9545 | { |
ad8d3bb3 TS |
9546 | char *b = *str + 1 + strspn (*str + 1, " \t"); |
9547 | char *e; | |
9548 | ||
9549 | /* Check for base register. */ | |
9550 | if (b[0] == '$') | |
9551 | { | |
9552 | if (strchr (b, ')') | |
9553 | && (e = b + strcspn (b, ") \t")) | |
9554 | && e - b > 1 && e - b < 4) | |
9555 | { | |
98d3f06f KH |
9556 | if ((e - b == 3 |
9557 | && ((b[1] == 'f' && b[2] == 'p') | |
9558 | || (b[1] == 's' && b[2] == 'p') | |
9559 | || (b[1] == 'g' && b[2] == 'p') | |
9560 | || (b[1] == 'a' && b[2] == 't') | |
9561 | || (ISDIGIT (b[1]) | |
9562 | && ISDIGIT (b[2])))) | |
9563 | || (ISDIGIT (b[1]))) | |
9564 | { | |
9565 | *len = strcspn (*str, ")") + 1; | |
9566 | return S_EX_REGISTER; | |
9567 | } | |
ad8d3bb3 TS |
9568 | } |
9569 | } | |
394f9b3a | 9570 | /* Check for percent_op (in parentheses). */ |
ad8d3bb3 TS |
9571 | else if (b[0] == '%') |
9572 | { | |
9573 | *str = b; | |
394f9b3a | 9574 | return my_getPercentOp (str, len, nestlevel); |
ad8d3bb3 | 9575 | } |
76b3015f | 9576 | |
394f9b3a TS |
9577 | /* Some other expression in the parentheses, which can contain |
9578 | parentheses itself. Attempt to find the matching one. */ | |
9579 | { | |
9580 | int pcnt = 1; | |
9581 | char *s; | |
9582 | ||
9583 | *len = 1; | |
9584 | for (s = *str + 1; *s && pcnt; s++, (*len)++) | |
9585 | { | |
9586 | if (*s == '(') | |
f9419b05 | 9587 | ++pcnt; |
394f9b3a | 9588 | else if (*s == ')') |
f9419b05 | 9589 | --pcnt; |
394f9b3a TS |
9590 | } |
9591 | } | |
fb1b3232 | 9592 | } |
394f9b3a | 9593 | /* Check for percent_op (outside of parentheses). */ |
ad8d3bb3 | 9594 | else if (*str[0] == '%') |
394f9b3a TS |
9595 | return my_getPercentOp (str, len, nestlevel); |
9596 | ||
9597 | /* Any other expression. */ | |
9598 | return S_EX_NONE; | |
9599 | } | |
ad8d3bb3 | 9600 | |
394f9b3a TS |
9601 | static int |
9602 | my_getPercentOp (str, len, nestlevel) | |
9603 | char **str; | |
9604 | unsigned int *len; | |
9605 | int *nestlevel; | |
9606 | { | |
9607 | char *tmp = *str + 1; | |
9608 | unsigned int i = 0; | |
ad8d3bb3 | 9609 | |
394f9b3a TS |
9610 | while (ISALPHA (*tmp) || *tmp == '_') |
9611 | { | |
9612 | *tmp = TOLOWER (*tmp); | |
9613 | tmp++; | |
9614 | } | |
9615 | while (i < (sizeof (percent_op) / sizeof (struct percent_op_match))) | |
9616 | { | |
9617 | if (strncmp (*str, percent_op[i].str, strlen (percent_op[i].str))) | |
98d3f06f | 9618 | i++; |
394f9b3a | 9619 | else |
ad8d3bb3 | 9620 | { |
394f9b3a | 9621 | int type = percent_op[i].type; |
ad8d3bb3 | 9622 | |
394f9b3a TS |
9623 | /* Only %hi and %lo are allowed for OldABI. */ |
9624 | if (! HAVE_NEWABI && type != S_EX_HI && type != S_EX_LO) | |
9625 | return S_EX_NONE; | |
ad8d3bb3 | 9626 | |
394f9b3a | 9627 | *len = strlen (percent_op[i].str); |
f9419b05 | 9628 | ++(*nestlevel); |
394f9b3a | 9629 | return type; |
ad8d3bb3 | 9630 | } |
fb1b3232 | 9631 | } |
ad8d3bb3 TS |
9632 | return S_EX_NONE; |
9633 | } | |
9634 | ||
9635 | static int | |
9636 | my_getSmallExpression (ep, str) | |
9637 | expressionS *ep; | |
9638 | char *str; | |
9639 | { | |
9640 | static char *oldstr = NULL; | |
9641 | int c = S_EX_NONE; | |
9642 | int oldc; | |
394f9b3a | 9643 | int nestlevel = -1; |
ad8d3bb3 TS |
9644 | unsigned int len; |
9645 | ||
394f9b3a TS |
9646 | /* Don't update oldstr if the last call had nested percent_op's. We need |
9647 | it to parse the outer ones later. */ | |
ad8d3bb3 TS |
9648 | if (! oldstr) |
9649 | oldstr = str; | |
76b3015f | 9650 | |
ad8d3bb3 | 9651 | do |
fb1b3232 | 9652 | { |
ad8d3bb3 | 9653 | oldc = c; |
394f9b3a | 9654 | c = my_getSmallParser (&str, &len, &nestlevel); |
ad8d3bb3 TS |
9655 | if (c != S_EX_NONE && c != S_EX_REGISTER) |
9656 | str += len; | |
fb1b3232 | 9657 | } |
ad8d3bb3 TS |
9658 | while (c != S_EX_NONE && c != S_EX_REGISTER); |
9659 | ||
394f9b3a | 9660 | if (nestlevel >= 0) |
fb1b3232 | 9661 | { |
394f9b3a TS |
9662 | /* A percent_op was encountered. Don't try to get an expression if |
9663 | it is already blanked out. */ | |
ad8d3bb3 TS |
9664 | if (*(str + strspn (str + 1, " )")) != ')') |
9665 | { | |
9666 | char save; | |
9667 | ||
394f9b3a | 9668 | /* Let my_getExpression() stop at the closing parenthesis. */ |
ad8d3bb3 TS |
9669 | save = *(str + len); |
9670 | *(str + len) = '\0'; | |
9671 | my_getExpression (ep, str); | |
9672 | *(str + len) = save; | |
9673 | } | |
394f9b3a | 9674 | if (nestlevel > 0) |
ad8d3bb3 | 9675 | { |
394f9b3a TS |
9676 | /* Blank out including the % sign and the proper matching |
9677 | parenthesis. */ | |
9678 | int pcnt = 1; | |
9679 | char *s = strrchr (oldstr, '%'); | |
9680 | char *end; | |
9681 | ||
9682 | for (end = strchr (s, '(') + 1; *end && pcnt; end++) | |
9683 | { | |
9684 | if (*end == '(') | |
f9419b05 | 9685 | ++pcnt; |
394f9b3a | 9686 | else if (*end == ')') |
f9419b05 | 9687 | --pcnt; |
394f9b3a TS |
9688 | } |
9689 | ||
9690 | memset (s, ' ', end - s); | |
ad8d3bb3 TS |
9691 | str = oldstr; |
9692 | } | |
9693 | else | |
394f9b3a TS |
9694 | expr_end = str + len; |
9695 | ||
ad8d3bb3 | 9696 | c = oldc; |
fb1b3232 | 9697 | } |
ad8d3bb3 | 9698 | else if (c == S_EX_NONE) |
fb1b3232 | 9699 | { |
ad8d3bb3 | 9700 | my_getExpression (ep, str); |
fb1b3232 | 9701 | } |
ad8d3bb3 | 9702 | else if (c == S_EX_REGISTER) |
fb1b3232 | 9703 | { |
ad8d3bb3 TS |
9704 | ep->X_op = O_constant; |
9705 | expr_end = str; | |
9706 | ep->X_add_symbol = NULL; | |
9707 | ep->X_op_symbol = NULL; | |
9708 | ep->X_add_number = 0; | |
fb1b3232 | 9709 | } |
fb1b3232 TS |
9710 | else |
9711 | { | |
98d3f06f | 9712 | as_fatal (_("internal error")); |
fb1b3232 | 9713 | } |
252b5132 | 9714 | |
394f9b3a TS |
9715 | if (nestlevel <= 0) |
9716 | /* All percent_op's have been handled. */ | |
ad8d3bb3 | 9717 | oldstr = NULL; |
fb1b3232 | 9718 | |
fb1b3232 | 9719 | return c; |
252b5132 RH |
9720 | } |
9721 | ||
9722 | static void | |
9723 | my_getExpression (ep, str) | |
9724 | expressionS *ep; | |
9725 | char *str; | |
9726 | { | |
9727 | char *save_in; | |
98aa84af | 9728 | valueT val; |
252b5132 RH |
9729 | |
9730 | save_in = input_line_pointer; | |
9731 | input_line_pointer = str; | |
9732 | expression (ep); | |
9733 | expr_end = input_line_pointer; | |
9734 | input_line_pointer = save_in; | |
9735 | ||
9736 | /* If we are in mips16 mode, and this is an expression based on `.', | |
9737 | then we bump the value of the symbol by 1 since that is how other | |
9738 | text symbols are handled. We don't bother to handle complex | |
9739 | expressions, just `.' plus or minus a constant. */ | |
9740 | if (mips_opts.mips16 | |
9741 | && ep->X_op == O_symbol | |
9742 | && strcmp (S_GET_NAME (ep->X_add_symbol), FAKE_LABEL_NAME) == 0 | |
9743 | && S_GET_SEGMENT (ep->X_add_symbol) == now_seg | |
49309057 ILT |
9744 | && symbol_get_frag (ep->X_add_symbol) == frag_now |
9745 | && symbol_constant_p (ep->X_add_symbol) | |
98aa84af AM |
9746 | && (val = S_GET_VALUE (ep->X_add_symbol)) == frag_now_fix ()) |
9747 | S_SET_VALUE (ep->X_add_symbol, val + 1); | |
252b5132 RH |
9748 | } |
9749 | ||
9750 | /* Turn a string in input_line_pointer into a floating point constant | |
bc0d738a NC |
9751 | of type TYPE, and store the appropriate bytes in *LITP. The number |
9752 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
252b5132 RH |
9753 | returned, or NULL on OK. */ |
9754 | ||
9755 | char * | |
9756 | md_atof (type, litP, sizeP) | |
9757 | int type; | |
9758 | char *litP; | |
9759 | int *sizeP; | |
9760 | { | |
9761 | int prec; | |
9762 | LITTLENUM_TYPE words[4]; | |
9763 | char *t; | |
9764 | int i; | |
9765 | ||
9766 | switch (type) | |
9767 | { | |
9768 | case 'f': | |
9769 | prec = 2; | |
9770 | break; | |
9771 | ||
9772 | case 'd': | |
9773 | prec = 4; | |
9774 | break; | |
9775 | ||
9776 | default: | |
9777 | *sizeP = 0; | |
9778 | return _("bad call to md_atof"); | |
9779 | } | |
9780 | ||
9781 | t = atof_ieee (input_line_pointer, type, words); | |
9782 | if (t) | |
9783 | input_line_pointer = t; | |
9784 | ||
9785 | *sizeP = prec * 2; | |
9786 | ||
9787 | if (! target_big_endian) | |
9788 | { | |
9789 | for (i = prec - 1; i >= 0; i--) | |
9790 | { | |
9791 | md_number_to_chars (litP, (valueT) words[i], 2); | |
9792 | litP += 2; | |
9793 | } | |
9794 | } | |
9795 | else | |
9796 | { | |
9797 | for (i = 0; i < prec; i++) | |
9798 | { | |
9799 | md_number_to_chars (litP, (valueT) words[i], 2); | |
9800 | litP += 2; | |
9801 | } | |
9802 | } | |
bdaaa2e1 | 9803 | |
252b5132 RH |
9804 | return NULL; |
9805 | } | |
9806 | ||
9807 | void | |
9808 | md_number_to_chars (buf, val, n) | |
9809 | char *buf; | |
9810 | valueT val; | |
9811 | int n; | |
9812 | { | |
9813 | if (target_big_endian) | |
9814 | number_to_chars_bigendian (buf, val, n); | |
9815 | else | |
9816 | number_to_chars_littleendian (buf, val, n); | |
9817 | } | |
9818 | \f | |
ae948b86 | 9819 | #ifdef OBJ_ELF |
e013f690 TS |
9820 | static int support_64bit_objects(void) |
9821 | { | |
9822 | const char **list, **l; | |
9823 | ||
9824 | list = bfd_target_list (); | |
9825 | for (l = list; *l != NULL; l++) | |
9826 | #ifdef TE_TMIPS | |
9827 | /* This is traditional mips */ | |
9828 | if (strcmp (*l, "elf64-tradbigmips") == 0 | |
9829 | || strcmp (*l, "elf64-tradlittlemips") == 0) | |
9830 | #else | |
9831 | if (strcmp (*l, "elf64-bigmips") == 0 | |
9832 | || strcmp (*l, "elf64-littlemips") == 0) | |
9833 | #endif | |
9834 | break; | |
9835 | free (list); | |
9836 | return (*l != NULL); | |
9837 | } | |
ae948b86 | 9838 | #endif /* OBJ_ELF */ |
e013f690 | 9839 | |
5a38dc70 | 9840 | const char *md_shortopts = "nO::g::G:"; |
252b5132 | 9841 | |
e972090a NC |
9842 | struct option md_longopts[] = |
9843 | { | |
252b5132 RH |
9844 | #define OPTION_MIPS1 (OPTION_MD_BASE + 1) |
9845 | {"mips0", no_argument, NULL, OPTION_MIPS1}, | |
9846 | {"mips1", no_argument, NULL, OPTION_MIPS1}, | |
9847 | #define OPTION_MIPS2 (OPTION_MD_BASE + 2) | |
9848 | {"mips2", no_argument, NULL, OPTION_MIPS2}, | |
9849 | #define OPTION_MIPS3 (OPTION_MD_BASE + 3) | |
9850 | {"mips3", no_argument, NULL, OPTION_MIPS3}, | |
9851 | #define OPTION_MIPS4 (OPTION_MD_BASE + 4) | |
9852 | {"mips4", no_argument, NULL, OPTION_MIPS4}, | |
ae948b86 TS |
9853 | #define OPTION_MIPS5 (OPTION_MD_BASE + 5) |
9854 | {"mips5", no_argument, NULL, OPTION_MIPS5}, | |
9855 | #define OPTION_MIPS32 (OPTION_MD_BASE + 6) | |
9856 | {"mips32", no_argument, NULL, OPTION_MIPS32}, | |
9857 | #define OPTION_MIPS64 (OPTION_MD_BASE + 7) | |
9858 | {"mips64", no_argument, NULL, OPTION_MIPS64}, | |
9859 | #define OPTION_MEMBEDDED_PIC (OPTION_MD_BASE + 8) | |
252b5132 | 9860 | {"membedded-pic", no_argument, NULL, OPTION_MEMBEDDED_PIC}, |
ae948b86 | 9861 | #define OPTION_TRAP (OPTION_MD_BASE + 9) |
252b5132 RH |
9862 | {"trap", no_argument, NULL, OPTION_TRAP}, |
9863 | {"no-break", no_argument, NULL, OPTION_TRAP}, | |
ae948b86 | 9864 | #define OPTION_BREAK (OPTION_MD_BASE + 10) |
252b5132 RH |
9865 | {"break", no_argument, NULL, OPTION_BREAK}, |
9866 | {"no-trap", no_argument, NULL, OPTION_BREAK}, | |
ae948b86 | 9867 | #define OPTION_EB (OPTION_MD_BASE + 11) |
252b5132 | 9868 | {"EB", no_argument, NULL, OPTION_EB}, |
ae948b86 | 9869 | #define OPTION_EL (OPTION_MD_BASE + 12) |
252b5132 | 9870 | {"EL", no_argument, NULL, OPTION_EL}, |
ae948b86 | 9871 | #define OPTION_MIPS16 (OPTION_MD_BASE + 13) |
252b5132 | 9872 | {"mips16", no_argument, NULL, OPTION_MIPS16}, |
ae948b86 | 9873 | #define OPTION_NO_MIPS16 (OPTION_MD_BASE + 14) |
252b5132 | 9874 | {"no-mips16", no_argument, NULL, OPTION_NO_MIPS16}, |
ae948b86 | 9875 | #define OPTION_M7000_HILO_FIX (OPTION_MD_BASE + 15) |
6b76fefe | 9876 | {"mfix7000", no_argument, NULL, OPTION_M7000_HILO_FIX}, |
9ee72ff1 TS |
9877 | #define OPTION_MNO_7000_HILO_FIX (OPTION_MD_BASE + 16) |
9878 | {"no-fix-7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
9879 | {"mno-fix7000", no_argument, NULL, OPTION_MNO_7000_HILO_FIX}, | |
ae948b86 TS |
9880 | #define OPTION_FP32 (OPTION_MD_BASE + 17) |
9881 | {"mfp32", no_argument, NULL, OPTION_FP32}, | |
9882 | #define OPTION_GP32 (OPTION_MD_BASE + 18) | |
c97ef257 | 9883 | {"mgp32", no_argument, NULL, OPTION_GP32}, |
ae948b86 | 9884 | #define OPTION_CONSTRUCT_FLOATS (OPTION_MD_BASE + 19) |
119d663a | 9885 | {"construct-floats", no_argument, NULL, OPTION_CONSTRUCT_FLOATS}, |
ae948b86 | 9886 | #define OPTION_NO_CONSTRUCT_FLOATS (OPTION_MD_BASE + 20) |
119d663a | 9887 | {"no-construct-floats", no_argument, NULL, OPTION_NO_CONSTRUCT_FLOATS}, |
ae948b86 | 9888 | #define OPTION_MARCH (OPTION_MD_BASE + 21) |
ec68c924 | 9889 | {"march", required_argument, NULL, OPTION_MARCH}, |
ae948b86 | 9890 | #define OPTION_MTUNE (OPTION_MD_BASE + 22) |
ec68c924 | 9891 | {"mtune", required_argument, NULL, OPTION_MTUNE}, |
316f5878 RS |
9892 | #define OPTION_FP64 (OPTION_MD_BASE + 23) |
9893 | {"mfp64", no_argument, NULL, OPTION_FP64}, | |
ae948b86 TS |
9894 | #define OPTION_M4650 (OPTION_MD_BASE + 24) |
9895 | {"m4650", no_argument, NULL, OPTION_M4650}, | |
9896 | #define OPTION_NO_M4650 (OPTION_MD_BASE + 25) | |
9897 | {"no-m4650", no_argument, NULL, OPTION_NO_M4650}, | |
9898 | #define OPTION_M4010 (OPTION_MD_BASE + 26) | |
9899 | {"m4010", no_argument, NULL, OPTION_M4010}, | |
9900 | #define OPTION_NO_M4010 (OPTION_MD_BASE + 27) | |
9901 | {"no-m4010", no_argument, NULL, OPTION_NO_M4010}, | |
9902 | #define OPTION_M4100 (OPTION_MD_BASE + 28) | |
9903 | {"m4100", no_argument, NULL, OPTION_M4100}, | |
9904 | #define OPTION_NO_M4100 (OPTION_MD_BASE + 29) | |
9905 | {"no-m4100", no_argument, NULL, OPTION_NO_M4100}, | |
9906 | #define OPTION_M3900 (OPTION_MD_BASE + 30) | |
9907 | {"m3900", no_argument, NULL, OPTION_M3900}, | |
9908 | #define OPTION_NO_M3900 (OPTION_MD_BASE + 31) | |
9909 | {"no-m3900", no_argument, NULL, OPTION_NO_M3900}, | |
9910 | #define OPTION_GP64 (OPTION_MD_BASE + 32) | |
9911 | {"mgp64", no_argument, NULL, OPTION_GP64}, | |
1f25f5d3 CD |
9912 | #define OPTION_MIPS3D (OPTION_MD_BASE + 33) |
9913 | {"mips3d", no_argument, NULL, OPTION_MIPS3D}, | |
9914 | #define OPTION_NO_MIPS3D (OPTION_MD_BASE + 34) | |
9915 | {"no-mips3d", no_argument, NULL, OPTION_NO_MIPS3D}, | |
deec1734 CD |
9916 | #define OPTION_MDMX (OPTION_MD_BASE + 35) |
9917 | {"mdmx", no_argument, NULL, OPTION_MDMX}, | |
9918 | #define OPTION_NO_MDMX (OPTION_MD_BASE + 36) | |
9919 | {"no-mdmx", no_argument, NULL, OPTION_NO_MDMX}, | |
156c2f8b | 9920 | #ifdef OBJ_ELF |
deec1734 | 9921 | #define OPTION_ELF_BASE (OPTION_MD_BASE + 37) |
156c2f8b | 9922 | #define OPTION_CALL_SHARED (OPTION_ELF_BASE + 0) |
156c2f8b NC |
9923 | {"KPIC", no_argument, NULL, OPTION_CALL_SHARED}, |
9924 | {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, | |
ae948b86 | 9925 | #define OPTION_NON_SHARED (OPTION_ELF_BASE + 1) |
156c2f8b | 9926 | {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, |
ae948b86 | 9927 | #define OPTION_XGOT (OPTION_ELF_BASE + 2) |
156c2f8b | 9928 | {"xgot", no_argument, NULL, OPTION_XGOT}, |
ae948b86 TS |
9929 | #define OPTION_MABI (OPTION_ELF_BASE + 3) |
9930 | {"mabi", required_argument, NULL, OPTION_MABI}, | |
9931 | #define OPTION_32 (OPTION_ELF_BASE + 4) | |
156c2f8b | 9932 | {"32", no_argument, NULL, OPTION_32}, |
ae948b86 | 9933 | #define OPTION_N32 (OPTION_ELF_BASE + 5) |
e013f690 | 9934 | {"n32", no_argument, NULL, OPTION_N32}, |
ae948b86 | 9935 | #define OPTION_64 (OPTION_ELF_BASE + 6) |
156c2f8b | 9936 | {"64", no_argument, NULL, OPTION_64}, |
ecb4347a DJ |
9937 | #define OPTION_MDEBUG (OPTION_ELF_BASE + 7) |
9938 | {"mdebug", no_argument, NULL, OPTION_MDEBUG}, | |
9939 | #define OPTION_NO_MDEBUG (OPTION_ELF_BASE + 8) | |
9940 | {"no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG}, | |
ae948b86 | 9941 | #endif /* OBJ_ELF */ |
252b5132 RH |
9942 | {NULL, no_argument, NULL, 0} |
9943 | }; | |
156c2f8b | 9944 | size_t md_longopts_size = sizeof (md_longopts); |
252b5132 | 9945 | |
316f5878 RS |
9946 | /* Set STRING_PTR (either &mips_arch_string or &mips_tune_string) to |
9947 | NEW_VALUE. Warn if another value was already specified. Note: | |
9948 | we have to defer parsing the -march and -mtune arguments in order | |
9949 | to handle 'from-abi' correctly, since the ABI might be specified | |
9950 | in a later argument. */ | |
9951 | ||
9952 | static void | |
9953 | mips_set_option_string (string_ptr, new_value) | |
9954 | const char **string_ptr, *new_value; | |
9955 | { | |
9956 | if (*string_ptr != 0 && strcasecmp (*string_ptr, new_value) != 0) | |
9957 | as_warn (_("A different %s was already specified, is now %s"), | |
9958 | string_ptr == &mips_arch_string ? "-march" : "-mtune", | |
9959 | new_value); | |
9960 | ||
9961 | *string_ptr = new_value; | |
9962 | } | |
9963 | ||
252b5132 RH |
9964 | int |
9965 | md_parse_option (c, arg) | |
9966 | int c; | |
9967 | char *arg; | |
9968 | { | |
9969 | switch (c) | |
9970 | { | |
119d663a NC |
9971 | case OPTION_CONSTRUCT_FLOATS: |
9972 | mips_disable_float_construction = 0; | |
9973 | break; | |
bdaaa2e1 | 9974 | |
119d663a NC |
9975 | case OPTION_NO_CONSTRUCT_FLOATS: |
9976 | mips_disable_float_construction = 1; | |
9977 | break; | |
bdaaa2e1 | 9978 | |
252b5132 RH |
9979 | case OPTION_TRAP: |
9980 | mips_trap = 1; | |
9981 | break; | |
9982 | ||
9983 | case OPTION_BREAK: | |
9984 | mips_trap = 0; | |
9985 | break; | |
9986 | ||
9987 | case OPTION_EB: | |
9988 | target_big_endian = 1; | |
9989 | break; | |
9990 | ||
9991 | case OPTION_EL: | |
9992 | target_big_endian = 0; | |
9993 | break; | |
9994 | ||
39c0a331 L |
9995 | case 'n': |
9996 | warn_nops = 1; | |
9997 | break; | |
9998 | ||
252b5132 RH |
9999 | case 'O': |
10000 | if (arg && arg[1] == '0') | |
10001 | mips_optimize = 1; | |
10002 | else | |
10003 | mips_optimize = 2; | |
10004 | break; | |
10005 | ||
10006 | case 'g': | |
10007 | if (arg == NULL) | |
10008 | mips_debug = 2; | |
10009 | else | |
10010 | mips_debug = atoi (arg); | |
10011 | /* When the MIPS assembler sees -g or -g2, it does not do | |
10012 | optimizations which limit full symbolic debugging. We take | |
10013 | that to be equivalent to -O0. */ | |
10014 | if (mips_debug == 2) | |
10015 | mips_optimize = 1; | |
10016 | break; | |
10017 | ||
10018 | case OPTION_MIPS1: | |
316f5878 | 10019 | file_mips_isa = ISA_MIPS1; |
252b5132 RH |
10020 | break; |
10021 | ||
10022 | case OPTION_MIPS2: | |
316f5878 | 10023 | file_mips_isa = ISA_MIPS2; |
252b5132 RH |
10024 | break; |
10025 | ||
10026 | case OPTION_MIPS3: | |
316f5878 | 10027 | file_mips_isa = ISA_MIPS3; |
252b5132 RH |
10028 | break; |
10029 | ||
10030 | case OPTION_MIPS4: | |
316f5878 | 10031 | file_mips_isa = ISA_MIPS4; |
e7af610e NC |
10032 | break; |
10033 | ||
84ea6cf2 | 10034 | case OPTION_MIPS5: |
316f5878 | 10035 | file_mips_isa = ISA_MIPS5; |
84ea6cf2 NC |
10036 | break; |
10037 | ||
e7af610e | 10038 | case OPTION_MIPS32: |
316f5878 | 10039 | file_mips_isa = ISA_MIPS32; |
252b5132 RH |
10040 | break; |
10041 | ||
84ea6cf2 | 10042 | case OPTION_MIPS64: |
316f5878 | 10043 | file_mips_isa = ISA_MIPS64; |
84ea6cf2 NC |
10044 | break; |
10045 | ||
ec68c924 | 10046 | case OPTION_MTUNE: |
316f5878 RS |
10047 | mips_set_option_string (&mips_tune_string, arg); |
10048 | break; | |
ec68c924 | 10049 | |
316f5878 RS |
10050 | case OPTION_MARCH: |
10051 | mips_set_option_string (&mips_arch_string, arg); | |
252b5132 RH |
10052 | break; |
10053 | ||
10054 | case OPTION_M4650: | |
316f5878 RS |
10055 | mips_set_option_string (&mips_arch_string, "4650"); |
10056 | mips_set_option_string (&mips_tune_string, "4650"); | |
252b5132 RH |
10057 | break; |
10058 | ||
10059 | case OPTION_NO_M4650: | |
10060 | break; | |
10061 | ||
10062 | case OPTION_M4010: | |
316f5878 RS |
10063 | mips_set_option_string (&mips_arch_string, "4010"); |
10064 | mips_set_option_string (&mips_tune_string, "4010"); | |
252b5132 RH |
10065 | break; |
10066 | ||
10067 | case OPTION_NO_M4010: | |
10068 | break; | |
10069 | ||
10070 | case OPTION_M4100: | |
316f5878 RS |
10071 | mips_set_option_string (&mips_arch_string, "4100"); |
10072 | mips_set_option_string (&mips_tune_string, "4100"); | |
252b5132 RH |
10073 | break; |
10074 | ||
10075 | case OPTION_NO_M4100: | |
10076 | break; | |
10077 | ||
252b5132 | 10078 | case OPTION_M3900: |
316f5878 RS |
10079 | mips_set_option_string (&mips_arch_string, "3900"); |
10080 | mips_set_option_string (&mips_tune_string, "3900"); | |
252b5132 | 10081 | break; |
bdaaa2e1 | 10082 | |
252b5132 RH |
10083 | case OPTION_NO_M3900: |
10084 | break; | |
10085 | ||
deec1734 CD |
10086 | case OPTION_MDMX: |
10087 | mips_opts.ase_mdmx = 1; | |
10088 | break; | |
10089 | ||
10090 | case OPTION_NO_MDMX: | |
10091 | mips_opts.ase_mdmx = 0; | |
10092 | break; | |
10093 | ||
252b5132 RH |
10094 | case OPTION_MIPS16: |
10095 | mips_opts.mips16 = 1; | |
10096 | mips_no_prev_insn (false); | |
10097 | break; | |
10098 | ||
10099 | case OPTION_NO_MIPS16: | |
10100 | mips_opts.mips16 = 0; | |
10101 | mips_no_prev_insn (false); | |
10102 | break; | |
10103 | ||
1f25f5d3 CD |
10104 | case OPTION_MIPS3D: |
10105 | mips_opts.ase_mips3d = 1; | |
10106 | break; | |
10107 | ||
10108 | case OPTION_NO_MIPS3D: | |
10109 | mips_opts.ase_mips3d = 0; | |
10110 | break; | |
10111 | ||
252b5132 RH |
10112 | case OPTION_MEMBEDDED_PIC: |
10113 | mips_pic = EMBEDDED_PIC; | |
10114 | if (USE_GLOBAL_POINTER_OPT && g_switch_seen) | |
10115 | { | |
10116 | as_bad (_("-G may not be used with embedded PIC code")); | |
10117 | return 0; | |
10118 | } | |
10119 | g_switch_value = 0x7fffffff; | |
10120 | break; | |
10121 | ||
0f074f60 | 10122 | #ifdef OBJ_ELF |
252b5132 RH |
10123 | /* When generating ELF code, we permit -KPIC and -call_shared to |
10124 | select SVR4_PIC, and -non_shared to select no PIC. This is | |
10125 | intended to be compatible with Irix 5. */ | |
10126 | case OPTION_CALL_SHARED: | |
10127 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) | |
10128 | { | |
10129 | as_bad (_("-call_shared is supported only for ELF format")); | |
10130 | return 0; | |
10131 | } | |
10132 | mips_pic = SVR4_PIC; | |
10133 | if (g_switch_seen && g_switch_value != 0) | |
10134 | { | |
10135 | as_bad (_("-G may not be used with SVR4 PIC code")); | |
10136 | return 0; | |
10137 | } | |
10138 | g_switch_value = 0; | |
10139 | break; | |
10140 | ||
10141 | case OPTION_NON_SHARED: | |
10142 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) | |
10143 | { | |
10144 | as_bad (_("-non_shared is supported only for ELF format")); | |
10145 | return 0; | |
10146 | } | |
10147 | mips_pic = NO_PIC; | |
10148 | break; | |
10149 | ||
10150 | /* The -xgot option tells the assembler to use 32 offsets when | |
10151 | accessing the got in SVR4_PIC mode. It is for Irix | |
10152 | compatibility. */ | |
10153 | case OPTION_XGOT: | |
10154 | mips_big_got = 1; | |
10155 | break; | |
0f074f60 | 10156 | #endif /* OBJ_ELF */ |
252b5132 RH |
10157 | |
10158 | case 'G': | |
10159 | if (! USE_GLOBAL_POINTER_OPT) | |
10160 | { | |
10161 | as_bad (_("-G is not supported for this configuration")); | |
10162 | return 0; | |
10163 | } | |
10164 | else if (mips_pic == SVR4_PIC || mips_pic == EMBEDDED_PIC) | |
10165 | { | |
10166 | as_bad (_("-G may not be used with SVR4 or embedded PIC code")); | |
10167 | return 0; | |
10168 | } | |
10169 | else | |
10170 | g_switch_value = atoi (arg); | |
10171 | g_switch_seen = 1; | |
10172 | break; | |
10173 | ||
0f074f60 | 10174 | #ifdef OBJ_ELF |
34ba82a8 TS |
10175 | /* The -32, -n32 and -64 options are shortcuts for -mabi=32, -mabi=n32 |
10176 | and -mabi=64. */ | |
252b5132 | 10177 | case OPTION_32: |
34ba82a8 TS |
10178 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
10179 | { | |
10180 | as_bad (_("-32 is supported for ELF format only")); | |
10181 | return 0; | |
10182 | } | |
316f5878 | 10183 | mips_abi = O32_ABI; |
252b5132 RH |
10184 | break; |
10185 | ||
e013f690 | 10186 | case OPTION_N32: |
34ba82a8 TS |
10187 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
10188 | { | |
10189 | as_bad (_("-n32 is supported for ELF format only")); | |
10190 | return 0; | |
10191 | } | |
316f5878 | 10192 | mips_abi = N32_ABI; |
e013f690 | 10193 | break; |
252b5132 | 10194 | |
e013f690 | 10195 | case OPTION_64: |
34ba82a8 TS |
10196 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
10197 | { | |
10198 | as_bad (_("-64 is supported for ELF format only")); | |
10199 | return 0; | |
10200 | } | |
316f5878 | 10201 | mips_abi = N64_ABI; |
e013f690 TS |
10202 | if (! support_64bit_objects()) |
10203 | as_fatal (_("No compiled in support for 64 bit object file format")); | |
252b5132 | 10204 | break; |
ae948b86 | 10205 | #endif /* OBJ_ELF */ |
252b5132 | 10206 | |
c97ef257 | 10207 | case OPTION_GP32: |
a325df1d | 10208 | file_mips_gp32 = 1; |
c97ef257 AH |
10209 | break; |
10210 | ||
10211 | case OPTION_GP64: | |
a325df1d | 10212 | file_mips_gp32 = 0; |
c97ef257 | 10213 | break; |
252b5132 | 10214 | |
ca4e0257 | 10215 | case OPTION_FP32: |
a325df1d | 10216 | file_mips_fp32 = 1; |
316f5878 RS |
10217 | break; |
10218 | ||
10219 | case OPTION_FP64: | |
10220 | file_mips_fp32 = 0; | |
ca4e0257 RS |
10221 | break; |
10222 | ||
ae948b86 | 10223 | #ifdef OBJ_ELF |
252b5132 | 10224 | case OPTION_MABI: |
34ba82a8 TS |
10225 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
10226 | { | |
10227 | as_bad (_("-mabi is supported for ELF format only")); | |
10228 | return 0; | |
10229 | } | |
e013f690 | 10230 | if (strcmp (arg, "32") == 0) |
316f5878 | 10231 | mips_abi = O32_ABI; |
e013f690 | 10232 | else if (strcmp (arg, "o64") == 0) |
316f5878 | 10233 | mips_abi = O64_ABI; |
e013f690 | 10234 | else if (strcmp (arg, "n32") == 0) |
316f5878 | 10235 | mips_abi = N32_ABI; |
e013f690 TS |
10236 | else if (strcmp (arg, "64") == 0) |
10237 | { | |
316f5878 | 10238 | mips_abi = N64_ABI; |
e013f690 TS |
10239 | if (! support_64bit_objects()) |
10240 | as_fatal (_("No compiled in support for 64 bit object file " | |
10241 | "format")); | |
10242 | } | |
10243 | else if (strcmp (arg, "eabi") == 0) | |
316f5878 | 10244 | mips_abi = EABI_ABI; |
e013f690 | 10245 | else |
da0e507f TS |
10246 | { |
10247 | as_fatal (_("invalid abi -mabi=%s"), arg); | |
10248 | return 0; | |
10249 | } | |
252b5132 | 10250 | break; |
e013f690 | 10251 | #endif /* OBJ_ELF */ |
252b5132 | 10252 | |
6b76fefe CM |
10253 | case OPTION_M7000_HILO_FIX: |
10254 | mips_7000_hilo_fix = true; | |
10255 | break; | |
10256 | ||
9ee72ff1 | 10257 | case OPTION_MNO_7000_HILO_FIX: |
6b76fefe CM |
10258 | mips_7000_hilo_fix = false; |
10259 | break; | |
10260 | ||
ecb4347a DJ |
10261 | #ifdef OBJ_ELF |
10262 | case OPTION_MDEBUG: | |
10263 | mips_flag_mdebug = true; | |
10264 | break; | |
10265 | ||
10266 | case OPTION_NO_MDEBUG: | |
10267 | mips_flag_mdebug = false; | |
10268 | break; | |
10269 | #endif /* OBJ_ELF */ | |
10270 | ||
252b5132 RH |
10271 | default: |
10272 | return 0; | |
10273 | } | |
10274 | ||
10275 | return 1; | |
10276 | } | |
316f5878 RS |
10277 | \f |
10278 | /* Set up globals to generate code for the ISA or processor | |
10279 | described by INFO. */ | |
252b5132 | 10280 | |
252b5132 | 10281 | static void |
316f5878 RS |
10282 | mips_set_architecture (info) |
10283 | const struct mips_cpu_info *info; | |
252b5132 | 10284 | { |
316f5878 | 10285 | if (info != 0) |
252b5132 | 10286 | { |
316f5878 RS |
10287 | mips_arch_info = info; |
10288 | mips_arch = info->cpu; | |
10289 | mips_opts.isa = info->isa; | |
252b5132 | 10290 | } |
252b5132 RH |
10291 | } |
10292 | ||
252b5132 | 10293 | |
316f5878 | 10294 | /* Likewise for tuning. */ |
252b5132 | 10295 | |
316f5878 RS |
10296 | static void |
10297 | mips_set_tune (info) | |
10298 | const struct mips_cpu_info *info; | |
10299 | { | |
10300 | if (info != 0) | |
10301 | { | |
10302 | mips_tune_info = info; | |
10303 | mips_tune = info->cpu; | |
10304 | } | |
10305 | } | |
80cc45a5 | 10306 | |
34ba82a8 | 10307 | |
252b5132 | 10308 | void |
e9670677 MR |
10309 | mips_after_parse_args () |
10310 | { | |
e9670677 MR |
10311 | /* GP relative stuff not working for PE */ |
10312 | if (strncmp (TARGET_OS, "pe", 2) == 0 | |
10313 | && g_switch_value != 0) | |
10314 | { | |
10315 | if (g_switch_seen) | |
10316 | as_bad (_("-G not supported in this configuration.")); | |
10317 | g_switch_value = 0; | |
10318 | } | |
10319 | ||
22923709 RS |
10320 | /* The following code determines the architecture and register size. |
10321 | Similar code was added to GCC 3.3 (see override_options() in | |
10322 | config/mips/mips.c). The GAS and GCC code should be kept in sync | |
10323 | as much as possible. */ | |
e9670677 | 10324 | |
316f5878 RS |
10325 | if (mips_arch_string != 0) |
10326 | mips_set_architecture (mips_parse_cpu ("-march", mips_arch_string)); | |
e9670677 | 10327 | |
316f5878 RS |
10328 | if (mips_tune_string != 0) |
10329 | mips_set_tune (mips_parse_cpu ("-mtune", mips_tune_string)); | |
e9670677 | 10330 | |
316f5878 | 10331 | if (file_mips_isa != ISA_UNKNOWN) |
e9670677 | 10332 | { |
316f5878 RS |
10333 | /* Handle -mipsN. At this point, file_mips_isa contains the |
10334 | ISA level specified by -mipsN, while mips_opts.isa contains | |
10335 | the -march selection (if any). */ | |
10336 | if (mips_arch_info != 0) | |
e9670677 | 10337 | { |
316f5878 RS |
10338 | /* -march takes precedence over -mipsN, since it is more descriptive. |
10339 | There's no harm in specifying both as long as the ISA levels | |
10340 | are the same. */ | |
10341 | if (file_mips_isa != mips_opts.isa) | |
10342 | as_bad (_("-%s conflicts with the other architecture options, which imply -%s"), | |
10343 | mips_cpu_info_from_isa (file_mips_isa)->name, | |
10344 | mips_cpu_info_from_isa (mips_opts.isa)->name); | |
e9670677 | 10345 | } |
316f5878 RS |
10346 | else |
10347 | mips_set_architecture (mips_cpu_info_from_isa (file_mips_isa)); | |
e9670677 MR |
10348 | } |
10349 | ||
316f5878 RS |
10350 | if (mips_arch_info == 0) |
10351 | mips_set_architecture (mips_parse_cpu ("default CPU", | |
10352 | MIPS_CPU_STRING_DEFAULT)); | |
e9670677 | 10353 | |
316f5878 RS |
10354 | if (ABI_NEEDS_64BIT_REGS (mips_abi) && !ISA_HAS_64BIT_REGS (mips_opts.isa)) |
10355 | as_bad ("-march=%s is not compatible with the selected ABI", | |
10356 | mips_arch_info->name); | |
e9670677 | 10357 | |
316f5878 RS |
10358 | /* Optimize for mips_arch, unless -mtune selects a different processor. */ |
10359 | if (mips_tune_info == 0) | |
10360 | mips_set_tune (mips_arch_info); | |
e9670677 | 10361 | |
316f5878 | 10362 | if (file_mips_gp32 >= 0) |
e9670677 | 10363 | { |
316f5878 RS |
10364 | /* The user specified the size of the integer registers. Make sure |
10365 | it agrees with the ABI and ISA. */ | |
10366 | if (file_mips_gp32 == 0 && !ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
10367 | as_bad (_("-mgp64 used with a 32-bit processor")); | |
10368 | else if (file_mips_gp32 == 1 && ABI_NEEDS_64BIT_REGS (mips_abi)) | |
10369 | as_bad (_("-mgp32 used with a 64-bit ABI")); | |
10370 | else if (file_mips_gp32 == 0 && ABI_NEEDS_32BIT_REGS (mips_abi)) | |
10371 | as_bad (_("-mgp64 used with a 32-bit ABI")); | |
e9670677 MR |
10372 | } |
10373 | else | |
10374 | { | |
316f5878 RS |
10375 | /* Infer the integer register size from the ABI and processor. |
10376 | Restrict ourselves to 32-bit registers if that's all the | |
10377 | processor has, or if the ABI cannot handle 64-bit registers. */ | |
10378 | file_mips_gp32 = (ABI_NEEDS_32BIT_REGS (mips_abi) | |
10379 | || !ISA_HAS_64BIT_REGS (mips_opts.isa)); | |
e9670677 MR |
10380 | } |
10381 | ||
316f5878 RS |
10382 | /* ??? GAS treats single-float processors as though they had 64-bit |
10383 | float registers (although it complains when double-precision | |
10384 | instructions are used). As things stand, saying they have 32-bit | |
10385 | registers would lead to spurious "register must be even" messages. | |
10386 | So here we assume float registers are always the same size as | |
10387 | integer ones, unless the user says otherwise. */ | |
10388 | if (file_mips_fp32 < 0) | |
10389 | file_mips_fp32 = file_mips_gp32; | |
e9670677 | 10390 | |
316f5878 | 10391 | /* End of GCC-shared inference code. */ |
e9670677 | 10392 | |
316f5878 RS |
10393 | /* ??? When do we want this flag to be set? Who uses it? */ |
10394 | if (file_mips_gp32 == 1 | |
10395 | && mips_abi == NO_ABI | |
10396 | && ISA_HAS_64BIT_REGS (mips_opts.isa)) | |
10397 | mips_32bitmode = 1; | |
e9670677 MR |
10398 | |
10399 | if (mips_opts.isa == ISA_MIPS1 && mips_trap) | |
10400 | as_bad (_("trap exception not supported at ISA 1")); | |
10401 | ||
e9670677 MR |
10402 | /* If the selected architecture includes support for ASEs, enable |
10403 | generation of code for them. */ | |
a4672219 TS |
10404 | if (mips_opts.mips16 == -1) |
10405 | mips_opts.mips16 = (CPU_HAS_MIPS16 (mips_arch)) ? 1 : 0; | |
ffdefa66 | 10406 | if (mips_opts.ase_mips3d == -1) |
a4672219 | 10407 | mips_opts.ase_mips3d = (CPU_HAS_MIPS3D (mips_arch)) ? 1 : 0; |
ffdefa66 | 10408 | if (mips_opts.ase_mdmx == -1) |
a4672219 | 10409 | mips_opts.ase_mdmx = (CPU_HAS_MDMX (mips_arch)) ? 1 : 0; |
e9670677 | 10410 | |
e9670677 | 10411 | file_mips_isa = mips_opts.isa; |
a4672219 | 10412 | file_ase_mips16 = mips_opts.mips16; |
e9670677 MR |
10413 | file_ase_mips3d = mips_opts.ase_mips3d; |
10414 | file_ase_mdmx = mips_opts.ase_mdmx; | |
10415 | mips_opts.gp32 = file_mips_gp32; | |
10416 | mips_opts.fp32 = file_mips_fp32; | |
10417 | ||
10418 | if (HAVE_NEWABI) | |
10419 | mips_big_got = 1; | |
ecb4347a DJ |
10420 | |
10421 | if (mips_flag_mdebug < 0) | |
10422 | { | |
10423 | #ifdef OBJ_MAYBE_ECOFF | |
10424 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour) | |
10425 | mips_flag_mdebug = 1; | |
10426 | else | |
10427 | #endif /* OBJ_MAYBE_ECOFF */ | |
10428 | mips_flag_mdebug = 0; | |
10429 | } | |
e9670677 MR |
10430 | } |
10431 | \f | |
10432 | void | |
252b5132 RH |
10433 | mips_init_after_args () |
10434 | { | |
10435 | /* initialize opcodes */ | |
10436 | bfd_mips_num_opcodes = bfd_mips_num_builtin_opcodes; | |
beae10d5 | 10437 | mips_opcodes = (struct mips_opcode *) mips_builtin_opcodes; |
252b5132 RH |
10438 | } |
10439 | ||
10440 | long | |
10441 | md_pcrel_from (fixP) | |
10442 | fixS *fixP; | |
10443 | { | |
10444 | if (OUTPUT_FLAVOR != bfd_target_aout_flavour | |
10445 | && fixP->fx_addsy != (symbolS *) NULL | |
10446 | && ! S_IS_DEFINED (fixP->fx_addsy)) | |
10447 | { | |
6478892d TS |
10448 | /* This makes a branch to an undefined symbol be a branch to the |
10449 | current location. */ | |
cb56d3d3 | 10450 | if (mips_pic == EMBEDDED_PIC) |
6478892d | 10451 | return 4; |
cb56d3d3 | 10452 | else |
6478892d | 10453 | return 1; |
252b5132 RH |
10454 | } |
10455 | ||
c9914766 | 10456 | /* Return the address of the delay slot. */ |
252b5132 RH |
10457 | return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; |
10458 | } | |
10459 | ||
252b5132 RH |
10460 | /* This is called before the symbol table is processed. In order to |
10461 | work with gcc when using mips-tfile, we must keep all local labels. | |
10462 | However, in other cases, we want to discard them. If we were | |
10463 | called with -g, but we didn't see any debugging information, it may | |
10464 | mean that gcc is smuggling debugging information through to | |
10465 | mips-tfile, in which case we must generate all local labels. */ | |
10466 | ||
10467 | void | |
10468 | mips_frob_file_before_adjust () | |
10469 | { | |
10470 | #ifndef NO_ECOFF_DEBUGGING | |
10471 | if (ECOFF_DEBUGGING | |
10472 | && mips_debug != 0 | |
10473 | && ! ecoff_debugging_seen) | |
10474 | flag_keep_locals = 1; | |
10475 | #endif | |
10476 | } | |
10477 | ||
10478 | /* Sort any unmatched HI16_S relocs so that they immediately precede | |
94f592af | 10479 | the corresponding LO reloc. This is called before md_apply_fix3 and |
252b5132 RH |
10480 | tc_gen_reloc. Unmatched HI16_S relocs can only be generated by |
10481 | explicit use of the %hi modifier. */ | |
10482 | ||
10483 | void | |
10484 | mips_frob_file () | |
10485 | { | |
10486 | struct mips_hi_fixup *l; | |
10487 | ||
10488 | for (l = mips_hi_fixup_list; l != NULL; l = l->next) | |
10489 | { | |
10490 | segment_info_type *seginfo; | |
10491 | int pass; | |
10492 | ||
10493 | assert (l->fixp->fx_r_type == BFD_RELOC_HI16_S); | |
10494 | ||
10495 | /* Check quickly whether the next fixup happens to be a matching | |
10496 | %lo. */ | |
10497 | if (l->fixp->fx_next != NULL | |
10498 | && l->fixp->fx_next->fx_r_type == BFD_RELOC_LO16 | |
10499 | && l->fixp->fx_addsy == l->fixp->fx_next->fx_addsy | |
10500 | && l->fixp->fx_offset == l->fixp->fx_next->fx_offset) | |
10501 | continue; | |
10502 | ||
10503 | /* Look through the fixups for this segment for a matching %lo. | |
10504 | When we find one, move the %hi just in front of it. We do | |
10505 | this in two passes. In the first pass, we try to find a | |
10506 | unique %lo. In the second pass, we permit multiple %hi | |
10507 | relocs for a single %lo (this is a GNU extension). */ | |
10508 | seginfo = seg_info (l->seg); | |
10509 | for (pass = 0; pass < 2; pass++) | |
10510 | { | |
10511 | fixS *f, *prev; | |
10512 | ||
10513 | prev = NULL; | |
10514 | for (f = seginfo->fix_root; f != NULL; f = f->fx_next) | |
10515 | { | |
10516 | /* Check whether this is a %lo fixup which matches l->fixp. */ | |
10517 | if (f->fx_r_type == BFD_RELOC_LO16 | |
10518 | && f->fx_addsy == l->fixp->fx_addsy | |
10519 | && f->fx_offset == l->fixp->fx_offset | |
10520 | && (pass == 1 | |
10521 | || prev == NULL | |
10522 | || prev->fx_r_type != BFD_RELOC_HI16_S | |
10523 | || prev->fx_addsy != f->fx_addsy | |
10524 | || prev->fx_offset != f->fx_offset)) | |
10525 | { | |
10526 | fixS **pf; | |
10527 | ||
10528 | /* Move l->fixp before f. */ | |
10529 | for (pf = &seginfo->fix_root; | |
10530 | *pf != l->fixp; | |
10531 | pf = &(*pf)->fx_next) | |
10532 | assert (*pf != NULL); | |
10533 | ||
10534 | *pf = l->fixp->fx_next; | |
10535 | ||
10536 | l->fixp->fx_next = f; | |
10537 | if (prev == NULL) | |
10538 | seginfo->fix_root = l->fixp; | |
10539 | else | |
10540 | prev->fx_next = l->fixp; | |
10541 | ||
10542 | break; | |
10543 | } | |
10544 | ||
10545 | prev = f; | |
10546 | } | |
10547 | ||
10548 | if (f != NULL) | |
10549 | break; | |
10550 | ||
10551 | #if 0 /* GCC code motion plus incomplete dead code elimination | |
10552 | can leave a %hi without a %lo. */ | |
10553 | if (pass == 1) | |
10554 | as_warn_where (l->fixp->fx_file, l->fixp->fx_line, | |
10555 | _("Unmatched %%hi reloc")); | |
10556 | #endif | |
10557 | } | |
10558 | } | |
10559 | } | |
10560 | ||
10561 | /* When generating embedded PIC code we need to use a special | |
10562 | relocation to represent the difference of two symbols in the .text | |
10563 | section (switch tables use a difference of this sort). See | |
10564 | include/coff/mips.h for details. This macro checks whether this | |
10565 | fixup requires the special reloc. */ | |
10566 | #define SWITCH_TABLE(fixp) \ | |
10567 | ((fixp)->fx_r_type == BFD_RELOC_32 \ | |
bb2d6cd7 | 10568 | && OUTPUT_FLAVOR != bfd_target_elf_flavour \ |
252b5132 RH |
10569 | && (fixp)->fx_addsy != NULL \ |
10570 | && (fixp)->fx_subsy != NULL \ | |
10571 | && S_GET_SEGMENT ((fixp)->fx_addsy) == text_section \ | |
10572 | && S_GET_SEGMENT ((fixp)->fx_subsy) == text_section) | |
10573 | ||
10574 | /* When generating embedded PIC code we must keep all PC relative | |
10575 | relocations, in case the linker has to relax a call. We also need | |
f6688943 TS |
10576 | to keep relocations for switch table entries. |
10577 | ||
10578 | We may have combined relocations without symbols in the N32/N64 ABI. | |
10579 | We have to prevent gas from dropping them. */ | |
252b5132 | 10580 | |
252b5132 RH |
10581 | int |
10582 | mips_force_relocation (fixp) | |
10583 | fixS *fixp; | |
10584 | { | |
10585 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT | |
10586 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
10587 | return 1; | |
10588 | ||
f6688943 TS |
10589 | if (HAVE_NEWABI |
10590 | && S_GET_SEGMENT (fixp->fx_addsy) == bfd_abs_section_ptr | |
10591 | && (fixp->fx_r_type == BFD_RELOC_MIPS_SUB | |
10592 | || fixp->fx_r_type == BFD_RELOC_HI16_S | |
10593 | || fixp->fx_r_type == BFD_RELOC_LO16)) | |
10594 | return 1; | |
10595 | ||
252b5132 RH |
10596 | return (mips_pic == EMBEDDED_PIC |
10597 | && (fixp->fx_pcrel | |
10598 | || SWITCH_TABLE (fixp) | |
10599 | || fixp->fx_r_type == BFD_RELOC_PCREL_HI16_S | |
10600 | || fixp->fx_r_type == BFD_RELOC_PCREL_LO16)); | |
10601 | } | |
10602 | ||
add55e1f RS |
10603 | #ifdef OBJ_ELF |
10604 | static int | |
10605 | mips_need_elf_addend_fixup (fixP) | |
10606 | fixS *fixP; | |
10607 | { | |
2d2bf3e0 CD |
10608 | if (S_GET_OTHER (fixP->fx_addsy) == STO_MIPS16) |
10609 | return 1; | |
b25a253c CD |
10610 | if (mips_pic == EMBEDDED_PIC |
10611 | && S_IS_WEAK (fixP->fx_addsy)) | |
10612 | return 1; | |
10613 | if (mips_pic != EMBEDDED_PIC | |
10614 | && (S_IS_WEAK (fixP->fx_addsy) | |
bad9ca53 | 10615 | || S_IS_EXTERNAL (fixP->fx_addsy)) |
2d2bf3e0 CD |
10616 | && !S_IS_COMMON (fixP->fx_addsy)) |
10617 | return 1; | |
10618 | if (symbol_used_in_reloc_p (fixP->fx_addsy) | |
10619 | && (((bfd_get_section_flags (stdoutput, | |
10620 | S_GET_SEGMENT (fixP->fx_addsy)) | |
10621 | & SEC_LINK_ONCE) != 0) | |
10622 | || !strncmp (segment_name (S_GET_SEGMENT (fixP->fx_addsy)), | |
10623 | ".gnu.linkonce", | |
10624 | sizeof (".gnu.linkonce") - 1))) | |
10625 | return 1; | |
10626 | return 0; | |
add55e1f RS |
10627 | } |
10628 | #endif | |
10629 | ||
252b5132 RH |
10630 | /* Apply a fixup to the object file. */ |
10631 | ||
94f592af NC |
10632 | void |
10633 | md_apply_fix3 (fixP, valP, seg) | |
252b5132 | 10634 | fixS *fixP; |
98d3f06f | 10635 | valueT *valP; |
94f592af | 10636 | segT seg ATTRIBUTE_UNUSED; |
252b5132 | 10637 | { |
874e8986 | 10638 | bfd_byte *buf; |
98aa84af AM |
10639 | long insn; |
10640 | valueT value; | |
252b5132 RH |
10641 | |
10642 | assert (fixP->fx_size == 4 | |
10643 | || fixP->fx_r_type == BFD_RELOC_16 | |
f6688943 TS |
10644 | || fixP->fx_r_type == BFD_RELOC_32 |
10645 | || fixP->fx_r_type == BFD_RELOC_MIPS_JMP | |
10646 | || fixP->fx_r_type == BFD_RELOC_HI16_S | |
10647 | || fixP->fx_r_type == BFD_RELOC_LO16 | |
10648 | || fixP->fx_r_type == BFD_RELOC_GPREL16 | |
76b3015f | 10649 | || fixP->fx_r_type == BFD_RELOC_MIPS_LITERAL |
f6688943 | 10650 | || fixP->fx_r_type == BFD_RELOC_GPREL32 |
252b5132 | 10651 | || fixP->fx_r_type == BFD_RELOC_64 |
f6688943 TS |
10652 | || fixP->fx_r_type == BFD_RELOC_CTOR |
10653 | || fixP->fx_r_type == BFD_RELOC_MIPS_SUB | |
10654 | || fixP->fx_r_type == BFD_RELOC_MIPS_HIGHEST | |
10655 | || fixP->fx_r_type == BFD_RELOC_MIPS_HIGHER | |
10656 | || fixP->fx_r_type == BFD_RELOC_MIPS_SCN_DISP | |
10657 | || fixP->fx_r_type == BFD_RELOC_MIPS_REL16 | |
10658 | || fixP->fx_r_type == BFD_RELOC_MIPS_RELGOT | |
252b5132 | 10659 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
438c16b8 TS |
10660 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY |
10661 | || fixP->fx_r_type == BFD_RELOC_MIPS_JALR); | |
252b5132 | 10662 | |
98d3f06f | 10663 | value = *valP; |
252b5132 RH |
10664 | |
10665 | /* If we aren't adjusting this fixup to be against the section | |
10666 | symbol, we need to adjust the value. */ | |
10667 | #ifdef OBJ_ELF | |
10668 | if (fixP->fx_addsy != NULL && OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
bb2d6cd7 | 10669 | { |
add55e1f | 10670 | if (mips_need_elf_addend_fixup (fixP)) |
98aa84af | 10671 | { |
d6e9d61a | 10672 | reloc_howto_type *howto; |
98aa84af | 10673 | valueT symval = S_GET_VALUE (fixP->fx_addsy); |
94f592af | 10674 | |
98aa84af | 10675 | value -= symval; |
d6e9d61a MR |
10676 | |
10677 | howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); | |
10678 | if (value != 0 && howto->partial_inplace && ! fixP->fx_pcrel) | |
98aa84af AM |
10679 | { |
10680 | /* In this case, the bfd_install_relocation routine will | |
10681 | incorrectly add the symbol value back in. We just want | |
7461da6e | 10682 | the addend to appear in the object file. */ |
98aa84af | 10683 | value -= symval; |
7461da6e RS |
10684 | |
10685 | /* Make sure the addend is still non-zero. If it became zero | |
10686 | after the last operation, set it to a spurious value and | |
10687 | subtract the same value from the object file's contents. */ | |
10688 | if (value == 0) | |
10689 | { | |
10690 | value = 8; | |
10691 | ||
10692 | /* The in-place addends for LO16 relocations are signed; | |
10693 | leave the matching HI16 in-place addends as zero. */ | |
10694 | if (fixP->fx_r_type != BFD_RELOC_HI16_S) | |
10695 | { | |
7461da6e RS |
10696 | bfd_vma contents, mask, field; |
10697 | ||
7461da6e RS |
10698 | contents = bfd_get_bits (fixP->fx_frag->fr_literal |
10699 | + fixP->fx_where, | |
10700 | fixP->fx_size * 8, | |
10701 | target_big_endian); | |
10702 | ||
10703 | /* MASK has bits set where the relocation should go. | |
10704 | FIELD is -value, shifted into the appropriate place | |
10705 | for this relocation. */ | |
10706 | mask = 1 << (howto->bitsize - 1); | |
10707 | mask = (((mask - 1) << 1) | 1) << howto->bitpos; | |
10708 | field = (-value >> howto->rightshift) << howto->bitpos; | |
10709 | ||
10710 | bfd_put_bits ((field & mask) | (contents & ~mask), | |
10711 | fixP->fx_frag->fr_literal + fixP->fx_where, | |
10712 | fixP->fx_size * 8, | |
10713 | target_big_endian); | |
10714 | } | |
10715 | } | |
98aa84af AM |
10716 | } |
10717 | } | |
252b5132 | 10718 | |
bb2d6cd7 GK |
10719 | /* This code was generated using trial and error and so is |
10720 | fragile and not trustworthy. If you change it, you should | |
10721 | rerun the elf-rel, elf-rel2, and empic testcases and ensure | |
10722 | they still pass. */ | |
10723 | if (fixP->fx_pcrel || fixP->fx_subsy != NULL) | |
10724 | { | |
10725 | value += fixP->fx_frag->fr_address + fixP->fx_where; | |
10726 | ||
10727 | /* BFD's REL handling, for MIPS, is _very_ weird. | |
10728 | This gives the right results, but it can't possibly | |
10729 | be the way things are supposed to work. */ | |
cb56d3d3 TS |
10730 | if ((fixP->fx_r_type != BFD_RELOC_16_PCREL |
10731 | && fixP->fx_r_type != BFD_RELOC_16_PCREL_S2) | |
bb2d6cd7 GK |
10732 | || S_GET_SEGMENT (fixP->fx_addsy) != undefined_section) |
10733 | value += fixP->fx_frag->fr_address + fixP->fx_where; | |
10734 | } | |
10735 | } | |
10736 | #endif | |
252b5132 | 10737 | |
94f592af | 10738 | fixP->fx_addnumber = value; /* Remember value for tc_gen_reloc. */ |
252b5132 RH |
10739 | |
10740 | if (fixP->fx_addsy == NULL && ! fixP->fx_pcrel) | |
10741 | fixP->fx_done = 1; | |
10742 | ||
10743 | switch (fixP->fx_r_type) | |
10744 | { | |
10745 | case BFD_RELOC_MIPS_JMP: | |
e369bcce TS |
10746 | case BFD_RELOC_MIPS_SHIFT5: |
10747 | case BFD_RELOC_MIPS_SHIFT6: | |
10748 | case BFD_RELOC_MIPS_GOT_DISP: | |
10749 | case BFD_RELOC_MIPS_GOT_PAGE: | |
10750 | case BFD_RELOC_MIPS_GOT_OFST: | |
10751 | case BFD_RELOC_MIPS_SUB: | |
10752 | case BFD_RELOC_MIPS_INSERT_A: | |
10753 | case BFD_RELOC_MIPS_INSERT_B: | |
10754 | case BFD_RELOC_MIPS_DELETE: | |
10755 | case BFD_RELOC_MIPS_HIGHEST: | |
10756 | case BFD_RELOC_MIPS_HIGHER: | |
10757 | case BFD_RELOC_MIPS_SCN_DISP: | |
10758 | case BFD_RELOC_MIPS_REL16: | |
10759 | case BFD_RELOC_MIPS_RELGOT: | |
10760 | case BFD_RELOC_MIPS_JALR: | |
252b5132 RH |
10761 | case BFD_RELOC_HI16: |
10762 | case BFD_RELOC_HI16_S: | |
cdf6fd85 | 10763 | case BFD_RELOC_GPREL16: |
252b5132 RH |
10764 | case BFD_RELOC_MIPS_LITERAL: |
10765 | case BFD_RELOC_MIPS_CALL16: | |
10766 | case BFD_RELOC_MIPS_GOT16: | |
cdf6fd85 | 10767 | case BFD_RELOC_GPREL32: |
252b5132 RH |
10768 | case BFD_RELOC_MIPS_GOT_HI16: |
10769 | case BFD_RELOC_MIPS_GOT_LO16: | |
10770 | case BFD_RELOC_MIPS_CALL_HI16: | |
10771 | case BFD_RELOC_MIPS_CALL_LO16: | |
10772 | case BFD_RELOC_MIPS16_GPREL: | |
10773 | if (fixP->fx_pcrel) | |
10774 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
10775 | _("Invalid PC relative reloc")); | |
10776 | /* Nothing needed to do. The value comes from the reloc entry */ | |
10777 | break; | |
10778 | ||
10779 | case BFD_RELOC_MIPS16_JMP: | |
10780 | /* We currently always generate a reloc against a symbol, which | |
10781 | means that we don't want an addend even if the symbol is | |
10782 | defined. */ | |
10783 | fixP->fx_addnumber = 0; | |
10784 | break; | |
10785 | ||
10786 | case BFD_RELOC_PCREL_HI16_S: | |
10787 | /* The addend for this is tricky if it is internal, so we just | |
10788 | do everything here rather than in bfd_install_relocation. */ | |
bdaaa2e1 | 10789 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour |
bb2d6cd7 GK |
10790 | && !fixP->fx_done |
10791 | && value != 0) | |
10792 | break; | |
10793 | if (fixP->fx_addsy | |
10794 | && (symbol_get_bfdsym (fixP->fx_addsy)->flags & BSF_SECTION_SYM) == 0) | |
252b5132 RH |
10795 | { |
10796 | /* For an external symbol adjust by the address to make it | |
10797 | pcrel_offset. We use the address of the RELLO reloc | |
10798 | which follows this one. */ | |
10799 | value += (fixP->fx_next->fx_frag->fr_address | |
10800 | + fixP->fx_next->fx_where); | |
10801 | } | |
e7d556df | 10802 | value = ((value + 0x8000) >> 16) & 0xffff; |
874e8986 | 10803 | buf = (bfd_byte *) fixP->fx_frag->fr_literal + fixP->fx_where; |
252b5132 RH |
10804 | if (target_big_endian) |
10805 | buf += 2; | |
874e8986 | 10806 | md_number_to_chars ((char *) buf, value, 2); |
252b5132 RH |
10807 | break; |
10808 | ||
10809 | case BFD_RELOC_PCREL_LO16: | |
10810 | /* The addend for this is tricky if it is internal, so we just | |
10811 | do everything here rather than in bfd_install_relocation. */ | |
bdaaa2e1 | 10812 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour |
bb2d6cd7 GK |
10813 | && !fixP->fx_done |
10814 | && value != 0) | |
10815 | break; | |
10816 | if (fixP->fx_addsy | |
10817 | && (symbol_get_bfdsym (fixP->fx_addsy)->flags & BSF_SECTION_SYM) == 0) | |
252b5132 | 10818 | value += fixP->fx_frag->fr_address + fixP->fx_where; |
874e8986 | 10819 | buf = (bfd_byte *) fixP->fx_frag->fr_literal + fixP->fx_where; |
252b5132 RH |
10820 | if (target_big_endian) |
10821 | buf += 2; | |
874e8986 | 10822 | md_number_to_chars ((char *) buf, value, 2); |
252b5132 RH |
10823 | break; |
10824 | ||
10825 | case BFD_RELOC_64: | |
10826 | /* This is handled like BFD_RELOC_32, but we output a sign | |
10827 | extended value if we are only 32 bits. */ | |
10828 | if (fixP->fx_done | |
10829 | || (mips_pic == EMBEDDED_PIC && SWITCH_TABLE (fixP))) | |
10830 | { | |
10831 | if (8 <= sizeof (valueT)) | |
10832 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
10833 | value, 8); | |
10834 | else | |
10835 | { | |
10836 | long w1, w2; | |
10837 | long hiv; | |
10838 | ||
10839 | w1 = w2 = fixP->fx_where; | |
10840 | if (target_big_endian) | |
10841 | w1 += 4; | |
10842 | else | |
10843 | w2 += 4; | |
10844 | md_number_to_chars (fixP->fx_frag->fr_literal + w1, value, 4); | |
10845 | if ((value & 0x80000000) != 0) | |
10846 | hiv = 0xffffffff; | |
10847 | else | |
10848 | hiv = 0; | |
10849 | md_number_to_chars (fixP->fx_frag->fr_literal + w2, hiv, 4); | |
10850 | } | |
10851 | } | |
10852 | break; | |
10853 | ||
056350c6 | 10854 | case BFD_RELOC_RVA: |
252b5132 RH |
10855 | case BFD_RELOC_32: |
10856 | /* If we are deleting this reloc entry, we must fill in the | |
10857 | value now. This can happen if we have a .word which is not | |
10858 | resolved when it appears but is later defined. We also need | |
10859 | to fill in the value if this is an embedded PIC switch table | |
10860 | entry. */ | |
10861 | if (fixP->fx_done | |
10862 | || (mips_pic == EMBEDDED_PIC && SWITCH_TABLE (fixP))) | |
10863 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
10864 | value, 4); | |
10865 | break; | |
10866 | ||
10867 | case BFD_RELOC_16: | |
10868 | /* If we are deleting this reloc entry, we must fill in the | |
10869 | value now. */ | |
10870 | assert (fixP->fx_size == 2); | |
10871 | if (fixP->fx_done) | |
10872 | md_number_to_chars (fixP->fx_frag->fr_literal + fixP->fx_where, | |
10873 | value, 2); | |
10874 | break; | |
10875 | ||
10876 | case BFD_RELOC_LO16: | |
10877 | /* When handling an embedded PIC switch statement, we can wind | |
10878 | up deleting a LO16 reloc. See the 'o' case in mips_ip. */ | |
10879 | if (fixP->fx_done) | |
10880 | { | |
98aa84af | 10881 | if (value + 0x8000 > 0xffff) |
252b5132 RH |
10882 | as_bad_where (fixP->fx_file, fixP->fx_line, |
10883 | _("relocation overflow")); | |
874e8986 | 10884 | buf = (bfd_byte *) fixP->fx_frag->fr_literal + fixP->fx_where; |
252b5132 RH |
10885 | if (target_big_endian) |
10886 | buf += 2; | |
874e8986 | 10887 | md_number_to_chars ((char *) buf, value, 2); |
252b5132 RH |
10888 | } |
10889 | break; | |
10890 | ||
10891 | case BFD_RELOC_16_PCREL_S2: | |
cb56d3d3 TS |
10892 | if ((value & 0x3) != 0) |
10893 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
10894 | _("Branch to odd address (%lx)"), (long) value); | |
10895 | ||
10896 | /* Fall through. */ | |
10897 | ||
10898 | case BFD_RELOC_16_PCREL: | |
252b5132 RH |
10899 | /* |
10900 | * We need to save the bits in the instruction since fixup_segment() | |
10901 | * might be deleting the relocation entry (i.e., a branch within | |
10902 | * the current segment). | |
10903 | */ | |
bb2d6cd7 GK |
10904 | if (!fixP->fx_done && value != 0) |
10905 | break; | |
10906 | /* If 'value' is zero, the remaining reloc code won't actually | |
10907 | do the store, so it must be done here. This is probably | |
10908 | a bug somewhere. */ | |
b25a253c CD |
10909 | if (!fixP->fx_done |
10910 | && (fixP->fx_r_type != BFD_RELOC_16_PCREL_S2 | |
10911 | || fixP->fx_addsy == NULL /* ??? */ | |
10912 | || ! S_IS_DEFINED (fixP->fx_addsy))) | |
bb2d6cd7 | 10913 | value -= fixP->fx_frag->fr_address + fixP->fx_where; |
bdaaa2e1 | 10914 | |
98aa84af | 10915 | value = (offsetT) value >> 2; |
252b5132 RH |
10916 | |
10917 | /* update old instruction data */ | |
874e8986 | 10918 | buf = (bfd_byte *) (fixP->fx_where + fixP->fx_frag->fr_literal); |
252b5132 RH |
10919 | if (target_big_endian) |
10920 | insn = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; | |
10921 | else | |
10922 | insn = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; | |
10923 | ||
98aa84af | 10924 | if (value + 0x8000 <= 0xffff) |
252b5132 RH |
10925 | insn |= value & 0xffff; |
10926 | else | |
10927 | { | |
10928 | /* The branch offset is too large. If this is an | |
10929 | unconditional branch, and we are not generating PIC code, | |
10930 | we can convert it to an absolute jump instruction. */ | |
10931 | if (mips_pic == NO_PIC | |
10932 | && fixP->fx_done | |
10933 | && fixP->fx_frag->fr_address >= text_section->vma | |
10934 | && (fixP->fx_frag->fr_address | |
10935 | < text_section->vma + text_section->_raw_size) | |
10936 | && ((insn & 0xffff0000) == 0x10000000 /* beq $0,$0 */ | |
10937 | || (insn & 0xffff0000) == 0x04010000 /* bgez $0 */ | |
10938 | || (insn & 0xffff0000) == 0x04110000)) /* bgezal $0 */ | |
10939 | { | |
10940 | if ((insn & 0xffff0000) == 0x04110000) /* bgezal $0 */ | |
10941 | insn = 0x0c000000; /* jal */ | |
10942 | else | |
10943 | insn = 0x08000000; /* j */ | |
10944 | fixP->fx_r_type = BFD_RELOC_MIPS_JMP; | |
10945 | fixP->fx_done = 0; | |
10946 | fixP->fx_addsy = section_symbol (text_section); | |
10947 | fixP->fx_addnumber = (value << 2) + md_pcrel_from (fixP); | |
10948 | } | |
10949 | else | |
10950 | { | |
10951 | /* FIXME. It would be possible in principle to handle | |
10952 | conditional branches which overflow. They could be | |
10953 | transformed into a branch around a jump. This would | |
10954 | require setting up variant frags for each different | |
10955 | branch type. The native MIPS assembler attempts to | |
10956 | handle these cases, but it appears to do it | |
10957 | incorrectly. */ | |
10958 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
10959 | _("Branch out of range")); | |
10960 | } | |
10961 | } | |
10962 | ||
10963 | md_number_to_chars ((char *) buf, (valueT) insn, 4); | |
10964 | break; | |
10965 | ||
10966 | case BFD_RELOC_VTABLE_INHERIT: | |
10967 | fixP->fx_done = 0; | |
10968 | if (fixP->fx_addsy | |
10969 | && !S_IS_DEFINED (fixP->fx_addsy) | |
10970 | && !S_IS_WEAK (fixP->fx_addsy)) | |
10971 | S_SET_WEAK (fixP->fx_addsy); | |
10972 | break; | |
10973 | ||
10974 | case BFD_RELOC_VTABLE_ENTRY: | |
10975 | fixP->fx_done = 0; | |
10976 | break; | |
10977 | ||
10978 | default: | |
10979 | internalError (); | |
10980 | } | |
252b5132 RH |
10981 | } |
10982 | ||
10983 | #if 0 | |
10984 | void | |
10985 | printInsn (oc) | |
10986 | unsigned long oc; | |
10987 | { | |
10988 | const struct mips_opcode *p; | |
10989 | int treg, sreg, dreg, shamt; | |
10990 | short imm; | |
10991 | const char *args; | |
10992 | int i; | |
10993 | ||
10994 | for (i = 0; i < NUMOPCODES; ++i) | |
10995 | { | |
10996 | p = &mips_opcodes[i]; | |
10997 | if (((oc & p->mask) == p->match) && (p->pinfo != INSN_MACRO)) | |
10998 | { | |
10999 | printf ("%08lx %s\t", oc, p->name); | |
11000 | treg = (oc >> 16) & 0x1f; | |
11001 | sreg = (oc >> 21) & 0x1f; | |
11002 | dreg = (oc >> 11) & 0x1f; | |
11003 | shamt = (oc >> 6) & 0x1f; | |
11004 | imm = oc; | |
11005 | for (args = p->args;; ++args) | |
11006 | { | |
11007 | switch (*args) | |
11008 | { | |
11009 | case '\0': | |
11010 | printf ("\n"); | |
11011 | break; | |
11012 | ||
11013 | case ',': | |
11014 | case '(': | |
11015 | case ')': | |
11016 | printf ("%c", *args); | |
11017 | continue; | |
11018 | ||
11019 | case 'r': | |
11020 | assert (treg == sreg); | |
11021 | printf ("$%d,$%d", treg, sreg); | |
11022 | continue; | |
11023 | ||
11024 | case 'd': | |
11025 | case 'G': | |
11026 | printf ("$%d", dreg); | |
11027 | continue; | |
11028 | ||
11029 | case 't': | |
11030 | case 'E': | |
11031 | printf ("$%d", treg); | |
11032 | continue; | |
11033 | ||
11034 | case 'k': | |
11035 | printf ("0x%x", treg); | |
11036 | continue; | |
11037 | ||
11038 | case 'b': | |
11039 | case 's': | |
11040 | printf ("$%d", sreg); | |
11041 | continue; | |
11042 | ||
11043 | case 'a': | |
11044 | printf ("0x%08lx", oc & 0x1ffffff); | |
11045 | continue; | |
11046 | ||
11047 | case 'i': | |
11048 | case 'j': | |
11049 | case 'o': | |
11050 | case 'u': | |
11051 | printf ("%d", imm); | |
11052 | continue; | |
11053 | ||
11054 | case '<': | |
11055 | case '>': | |
11056 | printf ("$%d", shamt); | |
11057 | continue; | |
11058 | ||
11059 | default: | |
11060 | internalError (); | |
11061 | } | |
11062 | break; | |
11063 | } | |
11064 | return; | |
11065 | } | |
11066 | } | |
11067 | printf (_("%08lx UNDEFINED\n"), oc); | |
11068 | } | |
11069 | #endif | |
11070 | ||
11071 | static symbolS * | |
11072 | get_symbol () | |
11073 | { | |
11074 | int c; | |
11075 | char *name; | |
11076 | symbolS *p; | |
11077 | ||
11078 | name = input_line_pointer; | |
11079 | c = get_symbol_end (); | |
11080 | p = (symbolS *) symbol_find_or_make (name); | |
11081 | *input_line_pointer = c; | |
11082 | return p; | |
11083 | } | |
11084 | ||
11085 | /* Align the current frag to a given power of two. The MIPS assembler | |
11086 | also automatically adjusts any preceding label. */ | |
11087 | ||
11088 | static void | |
11089 | mips_align (to, fill, label) | |
11090 | int to; | |
11091 | int fill; | |
11092 | symbolS *label; | |
11093 | { | |
11094 | mips_emit_delays (false); | |
11095 | frag_align (to, fill, 0); | |
11096 | record_alignment (now_seg, to); | |
11097 | if (label != NULL) | |
11098 | { | |
11099 | assert (S_GET_SEGMENT (label) == now_seg); | |
49309057 | 11100 | symbol_set_frag (label, frag_now); |
252b5132 RH |
11101 | S_SET_VALUE (label, (valueT) frag_now_fix ()); |
11102 | } | |
11103 | } | |
11104 | ||
11105 | /* Align to a given power of two. .align 0 turns off the automatic | |
11106 | alignment used by the data creating pseudo-ops. */ | |
11107 | ||
11108 | static void | |
11109 | s_align (x) | |
43841e91 | 11110 | int x ATTRIBUTE_UNUSED; |
252b5132 RH |
11111 | { |
11112 | register int temp; | |
11113 | register long temp_fill; | |
11114 | long max_alignment = 15; | |
11115 | ||
11116 | /* | |
11117 | ||
11118 | o Note that the assembler pulls down any immediately preceeding label | |
11119 | to the aligned address. | |
11120 | o It's not documented but auto alignment is reinstated by | |
11121 | a .align pseudo instruction. | |
11122 | o Note also that after auto alignment is turned off the mips assembler | |
11123 | issues an error on attempt to assemble an improperly aligned data item. | |
11124 | We don't. | |
11125 | ||
11126 | */ | |
11127 | ||
11128 | temp = get_absolute_expression (); | |
11129 | if (temp > max_alignment) | |
11130 | as_bad (_("Alignment too large: %d. assumed."), temp = max_alignment); | |
11131 | else if (temp < 0) | |
11132 | { | |
11133 | as_warn (_("Alignment negative: 0 assumed.")); | |
11134 | temp = 0; | |
11135 | } | |
11136 | if (*input_line_pointer == ',') | |
11137 | { | |
f9419b05 | 11138 | ++input_line_pointer; |
252b5132 RH |
11139 | temp_fill = get_absolute_expression (); |
11140 | } | |
11141 | else | |
11142 | temp_fill = 0; | |
11143 | if (temp) | |
11144 | { | |
11145 | auto_align = 1; | |
11146 | mips_align (temp, (int) temp_fill, | |
11147 | insn_labels != NULL ? insn_labels->label : NULL); | |
11148 | } | |
11149 | else | |
11150 | { | |
11151 | auto_align = 0; | |
11152 | } | |
11153 | ||
11154 | demand_empty_rest_of_line (); | |
11155 | } | |
11156 | ||
11157 | void | |
11158 | mips_flush_pending_output () | |
11159 | { | |
11160 | mips_emit_delays (false); | |
11161 | mips_clear_insn_labels (); | |
11162 | } | |
11163 | ||
11164 | static void | |
11165 | s_change_sec (sec) | |
11166 | int sec; | |
11167 | { | |
11168 | segT seg; | |
11169 | ||
11170 | /* When generating embedded PIC code, we only use the .text, .lit8, | |
11171 | .sdata and .sbss sections. We change the .data and .rdata | |
11172 | pseudo-ops to use .sdata. */ | |
11173 | if (mips_pic == EMBEDDED_PIC | |
11174 | && (sec == 'd' || sec == 'r')) | |
11175 | sec = 's'; | |
11176 | ||
11177 | #ifdef OBJ_ELF | |
11178 | /* The ELF backend needs to know that we are changing sections, so | |
11179 | that .previous works correctly. We could do something like check | |
b6ff326e | 11180 | for an obj_section_change_hook macro, but that might be confusing |
252b5132 RH |
11181 | as it would not be appropriate to use it in the section changing |
11182 | functions in read.c, since obj-elf.c intercepts those. FIXME: | |
11183 | This should be cleaner, somehow. */ | |
11184 | obj_elf_section_change_hook (); | |
11185 | #endif | |
11186 | ||
11187 | mips_emit_delays (false); | |
11188 | switch (sec) | |
11189 | { | |
11190 | case 't': | |
11191 | s_text (0); | |
11192 | break; | |
11193 | case 'd': | |
11194 | s_data (0); | |
11195 | break; | |
11196 | case 'b': | |
11197 | subseg_set (bss_section, (subsegT) get_absolute_expression ()); | |
11198 | demand_empty_rest_of_line (); | |
11199 | break; | |
11200 | ||
11201 | case 'r': | |
11202 | if (USE_GLOBAL_POINTER_OPT) | |
11203 | { | |
11204 | seg = subseg_new (RDATA_SECTION_NAME, | |
11205 | (subsegT) get_absolute_expression ()); | |
11206 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
11207 | { | |
11208 | bfd_set_section_flags (stdoutput, seg, | |
11209 | (SEC_ALLOC | |
11210 | | SEC_LOAD | |
11211 | | SEC_READONLY | |
11212 | | SEC_RELOC | |
11213 | | SEC_DATA)); | |
11214 | if (strcmp (TARGET_OS, "elf") != 0) | |
e799a695 | 11215 | record_alignment (seg, 4); |
252b5132 RH |
11216 | } |
11217 | demand_empty_rest_of_line (); | |
11218 | } | |
11219 | else | |
11220 | { | |
11221 | as_bad (_("No read only data section in this object file format")); | |
11222 | demand_empty_rest_of_line (); | |
11223 | return; | |
11224 | } | |
11225 | break; | |
11226 | ||
11227 | case 's': | |
11228 | if (USE_GLOBAL_POINTER_OPT) | |
11229 | { | |
11230 | seg = subseg_new (".sdata", (subsegT) get_absolute_expression ()); | |
11231 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
11232 | { | |
11233 | bfd_set_section_flags (stdoutput, seg, | |
11234 | SEC_ALLOC | SEC_LOAD | SEC_RELOC | |
11235 | | SEC_DATA); | |
11236 | if (strcmp (TARGET_OS, "elf") != 0) | |
e799a695 | 11237 | record_alignment (seg, 4); |
252b5132 RH |
11238 | } |
11239 | demand_empty_rest_of_line (); | |
11240 | break; | |
11241 | } | |
11242 | else | |
11243 | { | |
11244 | as_bad (_("Global pointers not supported; recompile -G 0")); | |
11245 | demand_empty_rest_of_line (); | |
11246 | return; | |
11247 | } | |
11248 | } | |
11249 | ||
11250 | auto_align = 1; | |
11251 | } | |
cca86cc8 SC |
11252 | |
11253 | void | |
11254 | s_change_section (ignore) | |
11255 | int ignore ATTRIBUTE_UNUSED; | |
11256 | { | |
11257 | expressionS rep_exp; | |
11258 | ||
11259 | char *section_name; | |
11260 | char c; | |
11261 | char *next_c; | |
11262 | char *p; | |
11263 | int section_type; | |
11264 | int section_flag; | |
11265 | int section_entry_size; | |
11266 | int section_alignment; | |
11267 | int log = -1; | |
11268 | flagword flags; | |
11269 | ||
11270 | section_name = input_line_pointer; | |
11271 | c = get_symbol_end (); | |
11272 | next_c = input_line_pointer + 1; | |
11273 | /* just after name is now '\0' */ | |
11274 | p = input_line_pointer; | |
11275 | ||
11276 | /* Do we have .section Name<,"flags"> */ | |
11277 | if (c == '\n' || (c == ',' && *next_c == '"') || c == '"') | |
11278 | { | |
11279 | *p = c; | |
11280 | input_line_pointer = section_name; | |
11281 | obj_elf_section (ignore); | |
11282 | return; | |
11283 | } | |
11284 | input_line_pointer++; | |
11285 | ||
11286 | /* Do we have .section Name<,type><,flag><,entry_size><,alignment> */ | |
11287 | if (c == ',') | |
11288 | section_type = get_absolute_expression (); | |
11289 | else | |
11290 | section_type = 0; | |
11291 | if (*input_line_pointer++ == ',') | |
11292 | section_flag = get_absolute_expression (); | |
11293 | else | |
11294 | section_flag = 0; | |
11295 | if (*input_line_pointer++ == ',') | |
11296 | section_entry_size = get_absolute_expression (); | |
11297 | else | |
11298 | section_entry_size = 0; | |
11299 | if (*input_line_pointer++ == ',') | |
11300 | section_alignment = get_absolute_expression (); | |
11301 | else | |
11302 | section_alignment = 0; | |
11303 | ||
11304 | obj_elf_change_section (section_name, section_type, section_flag, | |
11305 | section_entry_size, 0, 0, 0); | |
11306 | } | |
252b5132 RH |
11307 | |
11308 | void | |
11309 | mips_enable_auto_align () | |
11310 | { | |
11311 | auto_align = 1; | |
11312 | } | |
11313 | ||
11314 | static void | |
11315 | s_cons (log_size) | |
11316 | int log_size; | |
11317 | { | |
11318 | symbolS *label; | |
11319 | ||
11320 | label = insn_labels != NULL ? insn_labels->label : NULL; | |
11321 | mips_emit_delays (false); | |
11322 | if (log_size > 0 && auto_align) | |
11323 | mips_align (log_size, 0, label); | |
11324 | mips_clear_insn_labels (); | |
11325 | cons (1 << log_size); | |
11326 | } | |
11327 | ||
11328 | static void | |
11329 | s_float_cons (type) | |
11330 | int type; | |
11331 | { | |
11332 | symbolS *label; | |
11333 | ||
11334 | label = insn_labels != NULL ? insn_labels->label : NULL; | |
11335 | ||
11336 | mips_emit_delays (false); | |
11337 | ||
11338 | if (auto_align) | |
49309057 ILT |
11339 | { |
11340 | if (type == 'd') | |
11341 | mips_align (3, 0, label); | |
11342 | else | |
11343 | mips_align (2, 0, label); | |
11344 | } | |
252b5132 RH |
11345 | |
11346 | mips_clear_insn_labels (); | |
11347 | ||
11348 | float_cons (type); | |
11349 | } | |
11350 | ||
11351 | /* Handle .globl. We need to override it because on Irix 5 you are | |
11352 | permitted to say | |
11353 | .globl foo .text | |
11354 | where foo is an undefined symbol, to mean that foo should be | |
11355 | considered to be the address of a function. */ | |
11356 | ||
11357 | static void | |
11358 | s_mips_globl (x) | |
43841e91 | 11359 | int x ATTRIBUTE_UNUSED; |
252b5132 RH |
11360 | { |
11361 | char *name; | |
11362 | int c; | |
11363 | symbolS *symbolP; | |
11364 | flagword flag; | |
11365 | ||
11366 | name = input_line_pointer; | |
11367 | c = get_symbol_end (); | |
11368 | symbolP = symbol_find_or_make (name); | |
11369 | *input_line_pointer = c; | |
11370 | SKIP_WHITESPACE (); | |
11371 | ||
11372 | /* On Irix 5, every global symbol that is not explicitly labelled as | |
11373 | being a function is apparently labelled as being an object. */ | |
11374 | flag = BSF_OBJECT; | |
11375 | ||
11376 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
11377 | { | |
11378 | char *secname; | |
11379 | asection *sec; | |
11380 | ||
11381 | secname = input_line_pointer; | |
11382 | c = get_symbol_end (); | |
11383 | sec = bfd_get_section_by_name (stdoutput, secname); | |
11384 | if (sec == NULL) | |
11385 | as_bad (_("%s: no such section"), secname); | |
11386 | *input_line_pointer = c; | |
11387 | ||
11388 | if (sec != NULL && (sec->flags & SEC_CODE) != 0) | |
11389 | flag = BSF_FUNCTION; | |
11390 | } | |
11391 | ||
49309057 | 11392 | symbol_get_bfdsym (symbolP)->flags |= flag; |
252b5132 RH |
11393 | |
11394 | S_SET_EXTERNAL (symbolP); | |
11395 | demand_empty_rest_of_line (); | |
11396 | } | |
11397 | ||
11398 | static void | |
11399 | s_option (x) | |
43841e91 | 11400 | int x ATTRIBUTE_UNUSED; |
252b5132 RH |
11401 | { |
11402 | char *opt; | |
11403 | char c; | |
11404 | ||
11405 | opt = input_line_pointer; | |
11406 | c = get_symbol_end (); | |
11407 | ||
11408 | if (*opt == 'O') | |
11409 | { | |
11410 | /* FIXME: What does this mean? */ | |
11411 | } | |
11412 | else if (strncmp (opt, "pic", 3) == 0) | |
11413 | { | |
11414 | int i; | |
11415 | ||
11416 | i = atoi (opt + 3); | |
11417 | if (i == 0) | |
11418 | mips_pic = NO_PIC; | |
11419 | else if (i == 2) | |
11420 | mips_pic = SVR4_PIC; | |
11421 | else | |
11422 | as_bad (_(".option pic%d not supported"), i); | |
11423 | ||
11424 | if (USE_GLOBAL_POINTER_OPT && mips_pic == SVR4_PIC) | |
11425 | { | |
11426 | if (g_switch_seen && g_switch_value != 0) | |
11427 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
11428 | g_switch_value = 0; | |
11429 | bfd_set_gp_size (stdoutput, 0); | |
11430 | } | |
11431 | } | |
11432 | else | |
11433 | as_warn (_("Unrecognized option \"%s\""), opt); | |
11434 | ||
11435 | *input_line_pointer = c; | |
11436 | demand_empty_rest_of_line (); | |
11437 | } | |
11438 | ||
11439 | /* This structure is used to hold a stack of .set values. */ | |
11440 | ||
e972090a NC |
11441 | struct mips_option_stack |
11442 | { | |
252b5132 RH |
11443 | struct mips_option_stack *next; |
11444 | struct mips_set_options options; | |
11445 | }; | |
11446 | ||
11447 | static struct mips_option_stack *mips_opts_stack; | |
11448 | ||
11449 | /* Handle the .set pseudo-op. */ | |
11450 | ||
11451 | static void | |
11452 | s_mipsset (x) | |
43841e91 | 11453 | int x ATTRIBUTE_UNUSED; |
252b5132 RH |
11454 | { |
11455 | char *name = input_line_pointer, ch; | |
11456 | ||
11457 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
f9419b05 | 11458 | ++input_line_pointer; |
252b5132 RH |
11459 | ch = *input_line_pointer; |
11460 | *input_line_pointer = '\0'; | |
11461 | ||
11462 | if (strcmp (name, "reorder") == 0) | |
11463 | { | |
11464 | if (mips_opts.noreorder && prev_nop_frag != NULL) | |
11465 | { | |
11466 | /* If we still have pending nops, we can discard them. The | |
11467 | usual nop handling will insert any that are still | |
bdaaa2e1 | 11468 | needed. */ |
252b5132 RH |
11469 | prev_nop_frag->fr_fix -= (prev_nop_frag_holds |
11470 | * (mips_opts.mips16 ? 2 : 4)); | |
11471 | prev_nop_frag = NULL; | |
11472 | } | |
11473 | mips_opts.noreorder = 0; | |
11474 | } | |
11475 | else if (strcmp (name, "noreorder") == 0) | |
11476 | { | |
11477 | mips_emit_delays (true); | |
11478 | mips_opts.noreorder = 1; | |
11479 | mips_any_noreorder = 1; | |
11480 | } | |
11481 | else if (strcmp (name, "at") == 0) | |
11482 | { | |
11483 | mips_opts.noat = 0; | |
11484 | } | |
11485 | else if (strcmp (name, "noat") == 0) | |
11486 | { | |
11487 | mips_opts.noat = 1; | |
11488 | } | |
11489 | else if (strcmp (name, "macro") == 0) | |
11490 | { | |
11491 | mips_opts.warn_about_macros = 0; | |
11492 | } | |
11493 | else if (strcmp (name, "nomacro") == 0) | |
11494 | { | |
11495 | if (mips_opts.noreorder == 0) | |
11496 | as_bad (_("`noreorder' must be set before `nomacro'")); | |
11497 | mips_opts.warn_about_macros = 1; | |
11498 | } | |
11499 | else if (strcmp (name, "move") == 0 || strcmp (name, "novolatile") == 0) | |
11500 | { | |
11501 | mips_opts.nomove = 0; | |
11502 | } | |
11503 | else if (strcmp (name, "nomove") == 0 || strcmp (name, "volatile") == 0) | |
11504 | { | |
11505 | mips_opts.nomove = 1; | |
11506 | } | |
11507 | else if (strcmp (name, "bopt") == 0) | |
11508 | { | |
11509 | mips_opts.nobopt = 0; | |
11510 | } | |
11511 | else if (strcmp (name, "nobopt") == 0) | |
11512 | { | |
11513 | mips_opts.nobopt = 1; | |
11514 | } | |
11515 | else if (strcmp (name, "mips16") == 0 | |
11516 | || strcmp (name, "MIPS-16") == 0) | |
11517 | mips_opts.mips16 = 1; | |
11518 | else if (strcmp (name, "nomips16") == 0 | |
11519 | || strcmp (name, "noMIPS-16") == 0) | |
11520 | mips_opts.mips16 = 0; | |
1f25f5d3 CD |
11521 | else if (strcmp (name, "mips3d") == 0) |
11522 | mips_opts.ase_mips3d = 1; | |
11523 | else if (strcmp (name, "nomips3d") == 0) | |
11524 | mips_opts.ase_mips3d = 0; | |
a4672219 TS |
11525 | else if (strcmp (name, "mdmx") == 0) |
11526 | mips_opts.ase_mdmx = 1; | |
11527 | else if (strcmp (name, "nomdmx") == 0) | |
11528 | mips_opts.ase_mdmx = 0; | |
252b5132 RH |
11529 | else if (strncmp (name, "mips", 4) == 0) |
11530 | { | |
11531 | int isa; | |
11532 | ||
11533 | /* Permit the user to change the ISA on the fly. Needless to | |
11534 | say, misuse can cause serious problems. */ | |
11535 | isa = atoi (name + 4); | |
553178e4 | 11536 | switch (isa) |
98d3f06f KH |
11537 | { |
11538 | case 0: | |
11539 | mips_opts.gp32 = file_mips_gp32; | |
11540 | mips_opts.fp32 = file_mips_fp32; | |
98d3f06f KH |
11541 | break; |
11542 | case 1: | |
11543 | case 2: | |
11544 | case 32: | |
11545 | mips_opts.gp32 = 1; | |
11546 | mips_opts.fp32 = 1; | |
11547 | break; | |
11548 | case 3: | |
11549 | case 4: | |
11550 | case 5: | |
11551 | case 64: | |
98d3f06f KH |
11552 | mips_opts.gp32 = 0; |
11553 | mips_opts.fp32 = 0; | |
11554 | break; | |
11555 | default: | |
11556 | as_bad (_("unknown ISA level %s"), name + 4); | |
11557 | break; | |
11558 | } | |
553178e4 | 11559 | |
e7af610e | 11560 | switch (isa) |
98d3f06f KH |
11561 | { |
11562 | case 0: mips_opts.isa = file_mips_isa; break; | |
11563 | case 1: mips_opts.isa = ISA_MIPS1; break; | |
11564 | case 2: mips_opts.isa = ISA_MIPS2; break; | |
11565 | case 3: mips_opts.isa = ISA_MIPS3; break; | |
11566 | case 4: mips_opts.isa = ISA_MIPS4; break; | |
11567 | case 5: mips_opts.isa = ISA_MIPS5; break; | |
11568 | case 32: mips_opts.isa = ISA_MIPS32; break; | |
11569 | case 64: mips_opts.isa = ISA_MIPS64; break; | |
11570 | default: as_bad (_("unknown ISA level %s"), name + 4); break; | |
11571 | } | |
252b5132 RH |
11572 | } |
11573 | else if (strcmp (name, "autoextend") == 0) | |
11574 | mips_opts.noautoextend = 0; | |
11575 | else if (strcmp (name, "noautoextend") == 0) | |
11576 | mips_opts.noautoextend = 1; | |
11577 | else if (strcmp (name, "push") == 0) | |
11578 | { | |
11579 | struct mips_option_stack *s; | |
11580 | ||
11581 | s = (struct mips_option_stack *) xmalloc (sizeof *s); | |
11582 | s->next = mips_opts_stack; | |
11583 | s->options = mips_opts; | |
11584 | mips_opts_stack = s; | |
11585 | } | |
11586 | else if (strcmp (name, "pop") == 0) | |
11587 | { | |
11588 | struct mips_option_stack *s; | |
11589 | ||
11590 | s = mips_opts_stack; | |
11591 | if (s == NULL) | |
11592 | as_bad (_(".set pop with no .set push")); | |
11593 | else | |
11594 | { | |
11595 | /* If we're changing the reorder mode we need to handle | |
11596 | delay slots correctly. */ | |
11597 | if (s->options.noreorder && ! mips_opts.noreorder) | |
11598 | mips_emit_delays (true); | |
11599 | else if (! s->options.noreorder && mips_opts.noreorder) | |
11600 | { | |
11601 | if (prev_nop_frag != NULL) | |
11602 | { | |
11603 | prev_nop_frag->fr_fix -= (prev_nop_frag_holds | |
11604 | * (mips_opts.mips16 ? 2 : 4)); | |
11605 | prev_nop_frag = NULL; | |
11606 | } | |
11607 | } | |
11608 | ||
11609 | mips_opts = s->options; | |
11610 | mips_opts_stack = s->next; | |
11611 | free (s); | |
11612 | } | |
11613 | } | |
11614 | else | |
11615 | { | |
11616 | as_warn (_("Tried to set unrecognized symbol: %s\n"), name); | |
11617 | } | |
11618 | *input_line_pointer = ch; | |
11619 | demand_empty_rest_of_line (); | |
11620 | } | |
11621 | ||
11622 | /* Handle the .abicalls pseudo-op. I believe this is equivalent to | |
11623 | .option pic2. It means to generate SVR4 PIC calls. */ | |
11624 | ||
11625 | static void | |
11626 | s_abicalls (ignore) | |
43841e91 | 11627 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
11628 | { |
11629 | mips_pic = SVR4_PIC; | |
11630 | if (USE_GLOBAL_POINTER_OPT) | |
11631 | { | |
11632 | if (g_switch_seen && g_switch_value != 0) | |
11633 | as_warn (_("-G may not be used with SVR4 PIC code")); | |
11634 | g_switch_value = 0; | |
11635 | } | |
11636 | bfd_set_gp_size (stdoutput, 0); | |
11637 | demand_empty_rest_of_line (); | |
11638 | } | |
11639 | ||
11640 | /* Handle the .cpload pseudo-op. This is used when generating SVR4 | |
11641 | PIC code. It sets the $gp register for the function based on the | |
11642 | function address, which is in the register named in the argument. | |
11643 | This uses a relocation against _gp_disp, which is handled specially | |
11644 | by the linker. The result is: | |
11645 | lui $gp,%hi(_gp_disp) | |
11646 | addiu $gp,$gp,%lo(_gp_disp) | |
11647 | addu $gp,$gp,.cpload argument | |
11648 | The .cpload argument is normally $25 == $t9. */ | |
11649 | ||
11650 | static void | |
11651 | s_cpload (ignore) | |
43841e91 | 11652 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
11653 | { |
11654 | expressionS ex; | |
11655 | int icnt = 0; | |
11656 | ||
6478892d TS |
11657 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
11658 | .cpload is ignored. */ | |
11659 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) | |
252b5132 RH |
11660 | { |
11661 | s_ignore (0); | |
11662 | return; | |
11663 | } | |
11664 | ||
d3ecfc59 | 11665 | /* .cpload should be in a .set noreorder section. */ |
252b5132 RH |
11666 | if (mips_opts.noreorder == 0) |
11667 | as_warn (_(".cpload not in noreorder section")); | |
11668 | ||
11669 | ex.X_op = O_symbol; | |
11670 | ex.X_add_symbol = symbol_find_or_make ("_gp_disp"); | |
11671 | ex.X_op_symbol = NULL; | |
11672 | ex.X_add_number = 0; | |
11673 | ||
11674 | /* In ELF, this symbol is implicitly an STT_OBJECT symbol. */ | |
49309057 | 11675 | symbol_get_bfdsym (ex.X_add_symbol)->flags |= BSF_OBJECT; |
252b5132 | 11676 | |
c9914766 TS |
11677 | macro_build_lui (NULL, &icnt, &ex, mips_gp_register); |
11678 | macro_build ((char *) NULL, &icnt, &ex, "addiu", "t,r,j", | |
11679 | mips_gp_register, mips_gp_register, (int) BFD_RELOC_LO16); | |
252b5132 RH |
11680 | |
11681 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "addu", "d,v,t", | |
c9914766 | 11682 | mips_gp_register, mips_gp_register, tc_get_register (0)); |
252b5132 RH |
11683 | |
11684 | demand_empty_rest_of_line (); | |
11685 | } | |
11686 | ||
6478892d TS |
11687 | /* Handle the .cpsetup pseudo-op defined for NewABI PIC code. The syntax is: |
11688 | .cpsetup $reg1, offset|$reg2, label | |
11689 | ||
11690 | If offset is given, this results in: | |
11691 | sd $gp, offset($sp) | |
956cd1d6 | 11692 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
11693 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
11694 | daddu $gp, $gp, $reg1 | |
6478892d TS |
11695 | |
11696 | If $reg2 is given, this results in: | |
11697 | daddu $reg2, $gp, $0 | |
956cd1d6 | 11698 | lui $gp, %hi(%neg(%gp_rel(label))) |
698b7d9d TS |
11699 | addiu $gp, $gp, %lo(%neg(%gp_rel(label))) |
11700 | daddu $gp, $gp, $reg1 | |
11701 | $reg1 is normally $25 == $t9. */ | |
6478892d TS |
11702 | static void |
11703 | s_cpsetup (ignore) | |
11704 | int ignore ATTRIBUTE_UNUSED; | |
11705 | { | |
11706 | expressionS ex_off; | |
11707 | expressionS ex_sym; | |
11708 | int reg1; | |
11709 | int icnt = 0; | |
f21f8242 | 11710 | char *f; |
6478892d | 11711 | |
8586fc66 | 11712 | /* If we are not generating SVR4 PIC code, .cpsetup is ignored. |
6478892d TS |
11713 | We also need NewABI support. */ |
11714 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
11715 | { | |
11716 | s_ignore (0); | |
11717 | return; | |
11718 | } | |
11719 | ||
11720 | reg1 = tc_get_register (0); | |
11721 | SKIP_WHITESPACE (); | |
11722 | if (*input_line_pointer != ',') | |
11723 | { | |
11724 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
11725 | return; | |
11726 | } | |
11727 | else | |
80245285 | 11728 | ++input_line_pointer; |
6478892d TS |
11729 | SKIP_WHITESPACE (); |
11730 | if (*input_line_pointer == '$') | |
80245285 TS |
11731 | { |
11732 | mips_cpreturn_register = tc_get_register (0); | |
11733 | mips_cpreturn_offset = -1; | |
11734 | } | |
6478892d | 11735 | else |
80245285 TS |
11736 | { |
11737 | mips_cpreturn_offset = get_absolute_expression (); | |
11738 | mips_cpreturn_register = -1; | |
11739 | } | |
6478892d TS |
11740 | SKIP_WHITESPACE (); |
11741 | if (*input_line_pointer != ',') | |
11742 | { | |
11743 | as_bad (_("missing argument separator ',' for .cpsetup")); | |
11744 | return; | |
11745 | } | |
11746 | else | |
f9419b05 | 11747 | ++input_line_pointer; |
6478892d | 11748 | SKIP_WHITESPACE (); |
f21f8242 | 11749 | expression (&ex_sym); |
6478892d TS |
11750 | |
11751 | if (mips_cpreturn_register == -1) | |
11752 | { | |
11753 | ex_off.X_op = O_constant; | |
11754 | ex_off.X_add_symbol = NULL; | |
11755 | ex_off.X_op_symbol = NULL; | |
11756 | ex_off.X_add_number = mips_cpreturn_offset; | |
11757 | ||
11758 | macro_build ((char *) NULL, &icnt, &ex_off, "sd", "t,o(b)", | |
11759 | mips_gp_register, (int) BFD_RELOC_LO16, SP); | |
11760 | } | |
11761 | else | |
11762 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "daddu", | |
11763 | "d,v,t", mips_cpreturn_register, mips_gp_register, 0); | |
11764 | ||
f21f8242 AO |
11765 | /* Ensure there's room for the next two instructions, so that `f' |
11766 | doesn't end up with an address in the wrong frag. */ | |
11767 | frag_grow (8); | |
11768 | f = frag_more (0); | |
6478892d TS |
11769 | macro_build ((char *) NULL, &icnt, &ex_sym, "lui", "t,u", mips_gp_register, |
11770 | (int) BFD_RELOC_GPREL16); | |
f21f8242 AO |
11771 | fix_new (frag_now, f - frag_now->fr_literal, |
11772 | 0, NULL, 0, 0, BFD_RELOC_MIPS_SUB); | |
11773 | fix_new (frag_now, f - frag_now->fr_literal, | |
11774 | 0, NULL, 0, 0, BFD_RELOC_HI16_S); | |
11775 | ||
11776 | f = frag_more (0); | |
6478892d TS |
11777 | macro_build ((char *) NULL, &icnt, &ex_sym, "addiu", "t,r,j", |
11778 | mips_gp_register, mips_gp_register, (int) BFD_RELOC_GPREL16); | |
f21f8242 AO |
11779 | fix_new (frag_now, f - frag_now->fr_literal, |
11780 | 0, NULL, 0, 0, BFD_RELOC_MIPS_SUB); | |
11781 | fix_new (frag_now, f - frag_now->fr_literal, | |
11782 | 0, NULL, 0, 0, BFD_RELOC_LO16); | |
11783 | ||
8586fc66 TS |
11784 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, |
11785 | HAVE_64BIT_ADDRESSES ? "daddu" : "addu", "d,v,t", | |
11786 | mips_gp_register, mips_gp_register, reg1); | |
6478892d TS |
11787 | |
11788 | demand_empty_rest_of_line (); | |
11789 | } | |
11790 | ||
11791 | static void | |
11792 | s_cplocal (ignore) | |
11793 | int ignore ATTRIBUTE_UNUSED; | |
11794 | { | |
11795 | /* If we are not generating SVR4 PIC code, or if this is not NewABI code, | |
11796 | .cplocal is ignored. */ | |
11797 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
11798 | { | |
11799 | s_ignore (0); | |
11800 | return; | |
11801 | } | |
11802 | ||
11803 | mips_gp_register = tc_get_register (0); | |
85b51719 | 11804 | demand_empty_rest_of_line (); |
6478892d TS |
11805 | } |
11806 | ||
252b5132 RH |
11807 | /* Handle the .cprestore pseudo-op. This stores $gp into a given |
11808 | offset from $sp. The offset is remembered, and after making a PIC | |
11809 | call $gp is restored from that location. */ | |
11810 | ||
11811 | static void | |
11812 | s_cprestore (ignore) | |
43841e91 | 11813 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
11814 | { |
11815 | expressionS ex; | |
11816 | int icnt = 0; | |
11817 | ||
6478892d | 11818 | /* If we are not generating SVR4 PIC code, or if this is NewABI code, |
c9914766 | 11819 | .cprestore is ignored. */ |
6478892d | 11820 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) |
252b5132 RH |
11821 | { |
11822 | s_ignore (0); | |
11823 | return; | |
11824 | } | |
11825 | ||
11826 | mips_cprestore_offset = get_absolute_expression (); | |
7a621144 | 11827 | mips_cprestore_valid = 1; |
252b5132 RH |
11828 | |
11829 | ex.X_op = O_constant; | |
11830 | ex.X_add_symbol = NULL; | |
11831 | ex.X_op_symbol = NULL; | |
11832 | ex.X_add_number = mips_cprestore_offset; | |
11833 | ||
c9914766 TS |
11834 | macro_build ((char *) NULL, &icnt, &ex, HAVE_32BIT_ADDRESSES ? "sw" : "sd", |
11835 | "t,o(b)", mips_gp_register, (int) BFD_RELOC_LO16, SP); | |
252b5132 RH |
11836 | |
11837 | demand_empty_rest_of_line (); | |
11838 | } | |
11839 | ||
6478892d TS |
11840 | /* Handle the .cpreturn pseudo-op defined for NewABI PIC code. If an offset |
11841 | was given in the preceeding .gpsetup, it results in: | |
11842 | ld $gp, offset($sp) | |
76b3015f | 11843 | |
6478892d TS |
11844 | If a register $reg2 was given there, it results in: |
11845 | daddiu $gp, $gp, $reg2 | |
11846 | */ | |
11847 | static void | |
11848 | s_cpreturn (ignore) | |
11849 | int ignore ATTRIBUTE_UNUSED; | |
11850 | { | |
11851 | expressionS ex; | |
11852 | int icnt = 0; | |
11853 | ||
11854 | /* If we are not generating SVR4 PIC code, .cpreturn is ignored. | |
11855 | We also need NewABI support. */ | |
11856 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
11857 | { | |
11858 | s_ignore (0); | |
11859 | return; | |
11860 | } | |
11861 | ||
11862 | if (mips_cpreturn_register == -1) | |
11863 | { | |
11864 | ex.X_op = O_constant; | |
11865 | ex.X_add_symbol = NULL; | |
11866 | ex.X_op_symbol = NULL; | |
11867 | ex.X_add_number = mips_cpreturn_offset; | |
11868 | ||
11869 | macro_build ((char *) NULL, &icnt, &ex, "ld", "t,o(b)", | |
11870 | mips_gp_register, (int) BFD_RELOC_LO16, SP); | |
11871 | } | |
11872 | else | |
11873 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, "daddu", | |
11874 | "d,v,t", mips_gp_register, mips_cpreturn_register, 0); | |
11875 | ||
11876 | demand_empty_rest_of_line (); | |
11877 | } | |
11878 | ||
11879 | /* Handle the .gpvalue pseudo-op. This is used when generating NewABI PIC | |
11880 | code. It sets the offset to use in gp_rel relocations. */ | |
11881 | ||
11882 | static void | |
11883 | s_gpvalue (ignore) | |
11884 | int ignore ATTRIBUTE_UNUSED; | |
11885 | { | |
11886 | /* If we are not generating SVR4 PIC code, .gpvalue is ignored. | |
11887 | We also need NewABI support. */ | |
11888 | if (mips_pic != SVR4_PIC || ! HAVE_NEWABI) | |
11889 | { | |
11890 | s_ignore (0); | |
11891 | return; | |
11892 | } | |
11893 | ||
def2e0dd | 11894 | mips_gprel_offset = get_absolute_expression (); |
6478892d TS |
11895 | |
11896 | demand_empty_rest_of_line (); | |
11897 | } | |
11898 | ||
252b5132 RH |
11899 | /* Handle the .gpword pseudo-op. This is used when generating PIC |
11900 | code. It generates a 32 bit GP relative reloc. */ | |
11901 | ||
11902 | static void | |
11903 | s_gpword (ignore) | |
43841e91 | 11904 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
11905 | { |
11906 | symbolS *label; | |
11907 | expressionS ex; | |
11908 | char *p; | |
11909 | ||
11910 | /* When not generating PIC code, this is treated as .word. */ | |
11911 | if (mips_pic != SVR4_PIC) | |
11912 | { | |
11913 | s_cons (2); | |
11914 | return; | |
11915 | } | |
11916 | ||
11917 | label = insn_labels != NULL ? insn_labels->label : NULL; | |
11918 | mips_emit_delays (true); | |
11919 | if (auto_align) | |
11920 | mips_align (2, 0, label); | |
11921 | mips_clear_insn_labels (); | |
11922 | ||
11923 | expression (&ex); | |
11924 | ||
11925 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
11926 | { | |
11927 | as_bad (_("Unsupported use of .gpword")); | |
11928 | ignore_rest_of_line (); | |
11929 | } | |
11930 | ||
11931 | p = frag_more (4); | |
11932 | md_number_to_chars (p, (valueT) 0, 4); | |
c9914766 | 11933 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &ex, false, |
cdf6fd85 | 11934 | BFD_RELOC_GPREL32); |
252b5132 RH |
11935 | |
11936 | demand_empty_rest_of_line (); | |
11937 | } | |
11938 | ||
11939 | /* Handle the .cpadd pseudo-op. This is used when dealing with switch | |
11940 | tables in SVR4 PIC code. */ | |
11941 | ||
11942 | static void | |
11943 | s_cpadd (ignore) | |
43841e91 | 11944 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
11945 | { |
11946 | int icnt = 0; | |
11947 | int reg; | |
11948 | ||
6478892d TS |
11949 | /* This is ignored when not generating SVR4 PIC code or if this is NewABI |
11950 | code. */ | |
11951 | if (mips_pic != SVR4_PIC || HAVE_NEWABI) | |
252b5132 RH |
11952 | { |
11953 | s_ignore (0); | |
11954 | return; | |
11955 | } | |
11956 | ||
11957 | /* Add $gp to the register named as an argument. */ | |
11958 | reg = tc_get_register (0); | |
11959 | macro_build ((char *) NULL, &icnt, (expressionS *) NULL, | |
ca4e0257 | 11960 | HAVE_32BIT_ADDRESSES ? "addu" : "daddu", |
c9914766 | 11961 | "d,v,t", reg, reg, mips_gp_register); |
252b5132 | 11962 | |
bdaaa2e1 | 11963 | demand_empty_rest_of_line (); |
252b5132 RH |
11964 | } |
11965 | ||
11966 | /* Handle the .insn pseudo-op. This marks instruction labels in | |
11967 | mips16 mode. This permits the linker to handle them specially, | |
11968 | such as generating jalx instructions when needed. We also make | |
11969 | them odd for the duration of the assembly, in order to generate the | |
11970 | right sort of code. We will make them even in the adjust_symtab | |
11971 | routine, while leaving them marked. This is convenient for the | |
11972 | debugger and the disassembler. The linker knows to make them odd | |
11973 | again. */ | |
11974 | ||
11975 | static void | |
11976 | s_insn (ignore) | |
43841e91 | 11977 | int ignore ATTRIBUTE_UNUSED; |
252b5132 | 11978 | { |
f9419b05 | 11979 | mips16_mark_labels (); |
252b5132 RH |
11980 | |
11981 | demand_empty_rest_of_line (); | |
11982 | } | |
11983 | ||
11984 | /* Handle a .stabn directive. We need these in order to mark a label | |
11985 | as being a mips16 text label correctly. Sometimes the compiler | |
11986 | will emit a label, followed by a .stabn, and then switch sections. | |
11987 | If the label and .stabn are in mips16 mode, then the label is | |
11988 | really a mips16 text label. */ | |
11989 | ||
11990 | static void | |
11991 | s_mips_stab (type) | |
11992 | int type; | |
11993 | { | |
f9419b05 | 11994 | if (type == 'n') |
252b5132 RH |
11995 | mips16_mark_labels (); |
11996 | ||
11997 | s_stab (type); | |
11998 | } | |
11999 | ||
12000 | /* Handle the .weakext pseudo-op as defined in Kane and Heinrich. | |
12001 | */ | |
12002 | ||
12003 | static void | |
12004 | s_mips_weakext (ignore) | |
43841e91 | 12005 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
12006 | { |
12007 | char *name; | |
12008 | int c; | |
12009 | symbolS *symbolP; | |
12010 | expressionS exp; | |
12011 | ||
12012 | name = input_line_pointer; | |
12013 | c = get_symbol_end (); | |
12014 | symbolP = symbol_find_or_make (name); | |
12015 | S_SET_WEAK (symbolP); | |
12016 | *input_line_pointer = c; | |
12017 | ||
12018 | SKIP_WHITESPACE (); | |
12019 | ||
12020 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
12021 | { | |
12022 | if (S_IS_DEFINED (symbolP)) | |
12023 | { | |
956cd1d6 | 12024 | as_bad ("ignoring attempt to redefine symbol %s", |
252b5132 RH |
12025 | S_GET_NAME (symbolP)); |
12026 | ignore_rest_of_line (); | |
12027 | return; | |
12028 | } | |
bdaaa2e1 | 12029 | |
252b5132 RH |
12030 | if (*input_line_pointer == ',') |
12031 | { | |
12032 | ++input_line_pointer; | |
12033 | SKIP_WHITESPACE (); | |
12034 | } | |
bdaaa2e1 | 12035 | |
252b5132 RH |
12036 | expression (&exp); |
12037 | if (exp.X_op != O_symbol) | |
12038 | { | |
12039 | as_bad ("bad .weakext directive"); | |
98d3f06f | 12040 | ignore_rest_of_line (); |
252b5132 RH |
12041 | return; |
12042 | } | |
49309057 | 12043 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
12044 | } |
12045 | ||
12046 | demand_empty_rest_of_line (); | |
12047 | } | |
12048 | ||
12049 | /* Parse a register string into a number. Called from the ECOFF code | |
12050 | to parse .frame. The argument is non-zero if this is the frame | |
12051 | register, so that we can record it in mips_frame_reg. */ | |
12052 | ||
12053 | int | |
12054 | tc_get_register (frame) | |
12055 | int frame; | |
12056 | { | |
12057 | int reg; | |
12058 | ||
12059 | SKIP_WHITESPACE (); | |
12060 | if (*input_line_pointer++ != '$') | |
12061 | { | |
12062 | as_warn (_("expected `$'")); | |
85b51719 | 12063 | reg = ZERO; |
252b5132 | 12064 | } |
3882b010 | 12065 | else if (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
12066 | { |
12067 | reg = get_absolute_expression (); | |
12068 | if (reg < 0 || reg >= 32) | |
12069 | { | |
12070 | as_warn (_("Bad register number")); | |
85b51719 | 12071 | reg = ZERO; |
252b5132 RH |
12072 | } |
12073 | } | |
12074 | else | |
12075 | { | |
76db943d | 12076 | if (strncmp (input_line_pointer, "ra", 2) == 0) |
85b51719 TS |
12077 | { |
12078 | reg = RA; | |
12079 | input_line_pointer += 2; | |
12080 | } | |
76db943d | 12081 | else if (strncmp (input_line_pointer, "fp", 2) == 0) |
85b51719 TS |
12082 | { |
12083 | reg = FP; | |
12084 | input_line_pointer += 2; | |
12085 | } | |
252b5132 | 12086 | else if (strncmp (input_line_pointer, "sp", 2) == 0) |
85b51719 TS |
12087 | { |
12088 | reg = SP; | |
12089 | input_line_pointer += 2; | |
12090 | } | |
252b5132 | 12091 | else if (strncmp (input_line_pointer, "gp", 2) == 0) |
85b51719 TS |
12092 | { |
12093 | reg = GP; | |
12094 | input_line_pointer += 2; | |
12095 | } | |
252b5132 | 12096 | else if (strncmp (input_line_pointer, "at", 2) == 0) |
85b51719 TS |
12097 | { |
12098 | reg = AT; | |
12099 | input_line_pointer += 2; | |
12100 | } | |
12101 | else if (strncmp (input_line_pointer, "kt0", 3) == 0) | |
12102 | { | |
12103 | reg = KT0; | |
12104 | input_line_pointer += 3; | |
12105 | } | |
12106 | else if (strncmp (input_line_pointer, "kt1", 3) == 0) | |
12107 | { | |
12108 | reg = KT1; | |
12109 | input_line_pointer += 3; | |
12110 | } | |
12111 | else if (strncmp (input_line_pointer, "zero", 4) == 0) | |
12112 | { | |
12113 | reg = ZERO; | |
12114 | input_line_pointer += 4; | |
12115 | } | |
252b5132 RH |
12116 | else |
12117 | { | |
12118 | as_warn (_("Unrecognized register name")); | |
85b51719 TS |
12119 | reg = ZERO; |
12120 | while (ISALNUM(*input_line_pointer)) | |
12121 | input_line_pointer++; | |
252b5132 | 12122 | } |
252b5132 RH |
12123 | } |
12124 | if (frame) | |
7a621144 DJ |
12125 | { |
12126 | mips_frame_reg = reg != 0 ? reg : SP; | |
12127 | mips_frame_reg_valid = 1; | |
12128 | mips_cprestore_valid = 0; | |
12129 | } | |
252b5132 RH |
12130 | return reg; |
12131 | } | |
12132 | ||
12133 | valueT | |
12134 | md_section_align (seg, addr) | |
12135 | asection *seg; | |
12136 | valueT addr; | |
12137 | { | |
12138 | int align = bfd_get_section_alignment (stdoutput, seg); | |
12139 | ||
12140 | #ifdef OBJ_ELF | |
12141 | /* We don't need to align ELF sections to the full alignment. | |
12142 | However, Irix 5 may prefer that we align them at least to a 16 | |
12143 | byte boundary. We don't bother to align the sections if we are | |
12144 | targeted for an embedded system. */ | |
12145 | if (strcmp (TARGET_OS, "elf") == 0) | |
12146 | return addr; | |
12147 | if (align > 4) | |
12148 | align = 4; | |
12149 | #endif | |
12150 | ||
12151 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
12152 | } | |
12153 | ||
12154 | /* Utility routine, called from above as well. If called while the | |
12155 | input file is still being read, it's only an approximation. (For | |
12156 | example, a symbol may later become defined which appeared to be | |
12157 | undefined earlier.) */ | |
12158 | ||
12159 | static int | |
12160 | nopic_need_relax (sym, before_relaxing) | |
12161 | symbolS *sym; | |
12162 | int before_relaxing; | |
12163 | { | |
12164 | if (sym == 0) | |
12165 | return 0; | |
12166 | ||
6478892d | 12167 | if (USE_GLOBAL_POINTER_OPT && g_switch_value > 0) |
252b5132 RH |
12168 | { |
12169 | const char *symname; | |
12170 | int change; | |
12171 | ||
c9914766 | 12172 | /* Find out whether this symbol can be referenced off the $gp |
252b5132 RH |
12173 | register. It can be if it is smaller than the -G size or if |
12174 | it is in the .sdata or .sbss section. Certain symbols can | |
c9914766 | 12175 | not be referenced off the $gp, although it appears as though |
252b5132 RH |
12176 | they can. */ |
12177 | symname = S_GET_NAME (sym); | |
12178 | if (symname != (const char *) NULL | |
12179 | && (strcmp (symname, "eprol") == 0 | |
12180 | || strcmp (symname, "etext") == 0 | |
12181 | || strcmp (symname, "_gp") == 0 | |
12182 | || strcmp (symname, "edata") == 0 | |
12183 | || strcmp (symname, "_fbss") == 0 | |
12184 | || strcmp (symname, "_fdata") == 0 | |
12185 | || strcmp (symname, "_ftext") == 0 | |
12186 | || strcmp (symname, "end") == 0 | |
12187 | || strcmp (symname, "_gp_disp") == 0)) | |
12188 | change = 1; | |
12189 | else if ((! S_IS_DEFINED (sym) || S_IS_COMMON (sym)) | |
12190 | && (0 | |
12191 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 ILT |
12192 | || (symbol_get_obj (sym)->ecoff_extern_size != 0 |
12193 | && (symbol_get_obj (sym)->ecoff_extern_size | |
12194 | <= g_switch_value)) | |
252b5132 RH |
12195 | #endif |
12196 | /* We must defer this decision until after the whole | |
12197 | file has been read, since there might be a .extern | |
12198 | after the first use of this symbol. */ | |
12199 | || (before_relaxing | |
12200 | #ifndef NO_ECOFF_DEBUGGING | |
49309057 | 12201 | && symbol_get_obj (sym)->ecoff_extern_size == 0 |
252b5132 RH |
12202 | #endif |
12203 | && S_GET_VALUE (sym) == 0) | |
12204 | || (S_GET_VALUE (sym) != 0 | |
12205 | && S_GET_VALUE (sym) <= g_switch_value))) | |
12206 | change = 0; | |
12207 | else | |
12208 | { | |
12209 | const char *segname; | |
12210 | ||
12211 | segname = segment_name (S_GET_SEGMENT (sym)); | |
12212 | assert (strcmp (segname, ".lit8") != 0 | |
12213 | && strcmp (segname, ".lit4") != 0); | |
12214 | change = (strcmp (segname, ".sdata") != 0 | |
fba2b7f9 GK |
12215 | && strcmp (segname, ".sbss") != 0 |
12216 | && strncmp (segname, ".sdata.", 7) != 0 | |
12217 | && strncmp (segname, ".gnu.linkonce.s.", 16) != 0); | |
252b5132 RH |
12218 | } |
12219 | return change; | |
12220 | } | |
12221 | else | |
c9914766 | 12222 | /* We are not optimizing for the $gp register. */ |
252b5132 RH |
12223 | return 1; |
12224 | } | |
12225 | ||
12226 | /* Given a mips16 variant frag FRAGP, return non-zero if it needs an | |
12227 | extended opcode. SEC is the section the frag is in. */ | |
12228 | ||
12229 | static int | |
12230 | mips16_extended_frag (fragp, sec, stretch) | |
12231 | fragS *fragp; | |
12232 | asection *sec; | |
12233 | long stretch; | |
12234 | { | |
12235 | int type; | |
12236 | register const struct mips16_immed_operand *op; | |
12237 | offsetT val; | |
12238 | int mintiny, maxtiny; | |
12239 | segT symsec; | |
98aa84af | 12240 | fragS *sym_frag; |
252b5132 RH |
12241 | |
12242 | if (RELAX_MIPS16_USER_SMALL (fragp->fr_subtype)) | |
12243 | return 0; | |
12244 | if (RELAX_MIPS16_USER_EXT (fragp->fr_subtype)) | |
12245 | return 1; | |
12246 | ||
12247 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
12248 | op = mips16_immed_operands; | |
12249 | while (op->type != type) | |
12250 | { | |
12251 | ++op; | |
12252 | assert (op < mips16_immed_operands + MIPS16_NUM_IMMED); | |
12253 | } | |
12254 | ||
12255 | if (op->unsp) | |
12256 | { | |
12257 | if (type == '<' || type == '>' || type == '[' || type == ']') | |
12258 | { | |
12259 | mintiny = 1; | |
12260 | maxtiny = 1 << op->nbits; | |
12261 | } | |
12262 | else | |
12263 | { | |
12264 | mintiny = 0; | |
12265 | maxtiny = (1 << op->nbits) - 1; | |
12266 | } | |
12267 | } | |
12268 | else | |
12269 | { | |
12270 | mintiny = - (1 << (op->nbits - 1)); | |
12271 | maxtiny = (1 << (op->nbits - 1)) - 1; | |
12272 | } | |
12273 | ||
98aa84af | 12274 | sym_frag = symbol_get_frag (fragp->fr_symbol); |
ac62c346 | 12275 | val = S_GET_VALUE (fragp->fr_symbol); |
98aa84af | 12276 | symsec = S_GET_SEGMENT (fragp->fr_symbol); |
252b5132 RH |
12277 | |
12278 | if (op->pcrel) | |
12279 | { | |
12280 | addressT addr; | |
12281 | ||
12282 | /* We won't have the section when we are called from | |
12283 | mips_relax_frag. However, we will always have been called | |
12284 | from md_estimate_size_before_relax first. If this is a | |
12285 | branch to a different section, we mark it as such. If SEC is | |
12286 | NULL, and the frag is not marked, then it must be a branch to | |
12287 | the same section. */ | |
12288 | if (sec == NULL) | |
12289 | { | |
12290 | if (RELAX_MIPS16_LONG_BRANCH (fragp->fr_subtype)) | |
12291 | return 1; | |
12292 | } | |
12293 | else | |
12294 | { | |
98aa84af | 12295 | /* Must have been called from md_estimate_size_before_relax. */ |
252b5132 RH |
12296 | if (symsec != sec) |
12297 | { | |
12298 | fragp->fr_subtype = | |
12299 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
12300 | ||
12301 | /* FIXME: We should support this, and let the linker | |
12302 | catch branches and loads that are out of range. */ | |
12303 | as_bad_where (fragp->fr_file, fragp->fr_line, | |
12304 | _("unsupported PC relative reference to different section")); | |
12305 | ||
12306 | return 1; | |
12307 | } | |
98aa84af AM |
12308 | if (fragp != sym_frag && sym_frag->fr_address == 0) |
12309 | /* Assume non-extended on the first relaxation pass. | |
12310 | The address we have calculated will be bogus if this is | |
12311 | a forward branch to another frag, as the forward frag | |
12312 | will have fr_address == 0. */ | |
12313 | return 0; | |
252b5132 RH |
12314 | } |
12315 | ||
12316 | /* In this case, we know for sure that the symbol fragment is in | |
98aa84af AM |
12317 | the same section. If the relax_marker of the symbol fragment |
12318 | differs from the relax_marker of this fragment, we have not | |
12319 | yet adjusted the symbol fragment fr_address. We want to add | |
252b5132 RH |
12320 | in STRETCH in order to get a better estimate of the address. |
12321 | This particularly matters because of the shift bits. */ | |
12322 | if (stretch != 0 | |
98aa84af | 12323 | && sym_frag->relax_marker != fragp->relax_marker) |
252b5132 RH |
12324 | { |
12325 | fragS *f; | |
12326 | ||
12327 | /* Adjust stretch for any alignment frag. Note that if have | |
12328 | been expanding the earlier code, the symbol may be | |
12329 | defined in what appears to be an earlier frag. FIXME: | |
12330 | This doesn't handle the fr_subtype field, which specifies | |
12331 | a maximum number of bytes to skip when doing an | |
12332 | alignment. */ | |
98aa84af | 12333 | for (f = fragp; f != NULL && f != sym_frag; f = f->fr_next) |
252b5132 RH |
12334 | { |
12335 | if (f->fr_type == rs_align || f->fr_type == rs_align_code) | |
12336 | { | |
12337 | if (stretch < 0) | |
12338 | stretch = - ((- stretch) | |
12339 | & ~ ((1 << (int) f->fr_offset) - 1)); | |
12340 | else | |
12341 | stretch &= ~ ((1 << (int) f->fr_offset) - 1); | |
12342 | if (stretch == 0) | |
12343 | break; | |
12344 | } | |
12345 | } | |
12346 | if (f != NULL) | |
12347 | val += stretch; | |
12348 | } | |
12349 | ||
12350 | addr = fragp->fr_address + fragp->fr_fix; | |
12351 | ||
12352 | /* The base address rules are complicated. The base address of | |
12353 | a branch is the following instruction. The base address of a | |
12354 | PC relative load or add is the instruction itself, but if it | |
12355 | is in a delay slot (in which case it can not be extended) use | |
12356 | the address of the instruction whose delay slot it is in. */ | |
12357 | if (type == 'p' || type == 'q') | |
12358 | { | |
12359 | addr += 2; | |
12360 | ||
12361 | /* If we are currently assuming that this frag should be | |
12362 | extended, then, the current address is two bytes | |
bdaaa2e1 | 12363 | higher. */ |
252b5132 RH |
12364 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) |
12365 | addr += 2; | |
12366 | ||
12367 | /* Ignore the low bit in the target, since it will be set | |
12368 | for a text label. */ | |
12369 | if ((val & 1) != 0) | |
12370 | --val; | |
12371 | } | |
12372 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
12373 | addr -= 4; | |
12374 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
12375 | addr -= 2; | |
12376 | ||
12377 | val -= addr & ~ ((1 << op->shift) - 1); | |
12378 | ||
12379 | /* Branch offsets have an implicit 0 in the lowest bit. */ | |
12380 | if (type == 'p' || type == 'q') | |
12381 | val /= 2; | |
12382 | ||
12383 | /* If any of the shifted bits are set, we must use an extended | |
12384 | opcode. If the address depends on the size of this | |
12385 | instruction, this can lead to a loop, so we arrange to always | |
12386 | use an extended opcode. We only check this when we are in | |
12387 | the main relaxation loop, when SEC is NULL. */ | |
12388 | if ((val & ((1 << op->shift) - 1)) != 0 && sec == NULL) | |
12389 | { | |
12390 | fragp->fr_subtype = | |
12391 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
12392 | return 1; | |
12393 | } | |
12394 | ||
12395 | /* If we are about to mark a frag as extended because the value | |
12396 | is precisely maxtiny + 1, then there is a chance of an | |
12397 | infinite loop as in the following code: | |
12398 | la $4,foo | |
12399 | .skip 1020 | |
12400 | .align 2 | |
12401 | foo: | |
12402 | In this case when the la is extended, foo is 0x3fc bytes | |
12403 | away, so the la can be shrunk, but then foo is 0x400 away, so | |
12404 | the la must be extended. To avoid this loop, we mark the | |
12405 | frag as extended if it was small, and is about to become | |
12406 | extended with a value of maxtiny + 1. */ | |
12407 | if (val == ((maxtiny + 1) << op->shift) | |
12408 | && ! RELAX_MIPS16_EXTENDED (fragp->fr_subtype) | |
12409 | && sec == NULL) | |
12410 | { | |
12411 | fragp->fr_subtype = | |
12412 | RELAX_MIPS16_MARK_LONG_BRANCH (fragp->fr_subtype); | |
12413 | return 1; | |
12414 | } | |
12415 | } | |
12416 | else if (symsec != absolute_section && sec != NULL) | |
12417 | as_bad_where (fragp->fr_file, fragp->fr_line, _("unsupported relocation")); | |
12418 | ||
12419 | if ((val & ((1 << op->shift) - 1)) != 0 | |
12420 | || val < (mintiny << op->shift) | |
12421 | || val > (maxtiny << op->shift)) | |
12422 | return 1; | |
12423 | else | |
12424 | return 0; | |
12425 | } | |
12426 | ||
12427 | /* Estimate the size of a frag before relaxing. Unless this is the | |
12428 | mips16, we are not really relaxing here, and the final size is | |
12429 | encoded in the subtype information. For the mips16, we have to | |
12430 | decide whether we are using an extended opcode or not. */ | |
12431 | ||
252b5132 RH |
12432 | int |
12433 | md_estimate_size_before_relax (fragp, segtype) | |
12434 | fragS *fragp; | |
12435 | asection *segtype; | |
12436 | { | |
43841e91 | 12437 | int change = 0; |
8614eeee | 12438 | boolean linkonce = false; |
252b5132 RH |
12439 | |
12440 | if (RELAX_MIPS16_P (fragp->fr_subtype)) | |
177b4a6a AO |
12441 | /* We don't want to modify the EXTENDED bit here; it might get us |
12442 | into infinite loops. We change it only in mips_relax_frag(). */ | |
12443 | return (RELAX_MIPS16_EXTENDED (fragp->fr_subtype) ? 4 : 2); | |
252b5132 RH |
12444 | |
12445 | if (mips_pic == NO_PIC) | |
12446 | { | |
12447 | change = nopic_need_relax (fragp->fr_symbol, 0); | |
12448 | } | |
12449 | else if (mips_pic == SVR4_PIC) | |
12450 | { | |
12451 | symbolS *sym; | |
12452 | asection *symsec; | |
12453 | ||
12454 | sym = fragp->fr_symbol; | |
12455 | ||
12456 | /* Handle the case of a symbol equated to another symbol. */ | |
e0890092 | 12457 | while (symbol_equated_reloc_p (sym)) |
252b5132 RH |
12458 | { |
12459 | symbolS *n; | |
12460 | ||
12461 | /* It's possible to get a loop here in a badly written | |
12462 | program. */ | |
49309057 | 12463 | n = symbol_get_value_expression (sym)->X_add_symbol; |
252b5132 RH |
12464 | if (n == sym) |
12465 | break; | |
12466 | sym = n; | |
12467 | } | |
12468 | ||
12469 | symsec = S_GET_SEGMENT (sym); | |
12470 | ||
8614eeee UC |
12471 | /* duplicate the test for LINK_ONCE sections as in adjust_reloc_syms */ |
12472 | if (symsec != segtype && ! S_IS_LOCAL (sym)) | |
beae10d5 KH |
12473 | { |
12474 | if ((bfd_get_section_flags (stdoutput, symsec) & SEC_LINK_ONCE) | |
12475 | != 0) | |
12476 | linkonce = true; | |
12477 | ||
12478 | /* The GNU toolchain uses an extension for ELF: a section | |
12479 | beginning with the magic string .gnu.linkonce is a linkonce | |
12480 | section. */ | |
12481 | if (strncmp (segment_name (symsec), ".gnu.linkonce", | |
12482 | sizeof ".gnu.linkonce" - 1) == 0) | |
12483 | linkonce = true; | |
12484 | } | |
8614eeee | 12485 | |
252b5132 RH |
12486 | /* This must duplicate the test in adjust_reloc_syms. */ |
12487 | change = (symsec != &bfd_und_section | |
12488 | && symsec != &bfd_abs_section | |
426b0403 | 12489 | && ! bfd_is_com_section (symsec) |
8614eeee | 12490 | && !linkonce |
426b0403 | 12491 | #ifdef OBJ_ELF |
ea4ff978 | 12492 | /* A global or weak symbol is treated as external. */ |
9151e8bf | 12493 | && (OUTPUT_FLAVOR != bfd_target_elf_flavour |
b25a253c | 12494 | || (! S_IS_WEAK (sym) |
bad9ca53 TS |
12495 | && (! S_IS_EXTERNAL (sym) |
12496 | || mips_pic == EMBEDDED_PIC))) | |
426b0403 AM |
12497 | #endif |
12498 | ); | |
252b5132 RH |
12499 | } |
12500 | else | |
12501 | abort (); | |
12502 | ||
12503 | if (change) | |
12504 | { | |
12505 | /* Record the offset to the first reloc in the fr_opcode field. | |
12506 | This lets md_convert_frag and tc_gen_reloc know that the code | |
12507 | must be expanded. */ | |
12508 | fragp->fr_opcode = (fragp->fr_literal | |
12509 | + fragp->fr_fix | |
12510 | - RELAX_OLD (fragp->fr_subtype) | |
12511 | + RELAX_RELOC1 (fragp->fr_subtype)); | |
12512 | /* FIXME: This really needs as_warn_where. */ | |
12513 | if (RELAX_WARN (fragp->fr_subtype)) | |
9a41af64 TS |
12514 | as_warn (_("AT used after \".set noat\" or macro used after " |
12515 | "\".set nomacro\"")); | |
12516 | ||
12517 | return RELAX_NEW (fragp->fr_subtype) - RELAX_OLD (fragp->fr_subtype); | |
252b5132 RH |
12518 | } |
12519 | ||
9a41af64 | 12520 | return 0; |
252b5132 RH |
12521 | } |
12522 | ||
12523 | /* This is called to see whether a reloc against a defined symbol | |
12524 | should be converted into a reloc against a section. Don't adjust | |
12525 | MIPS16 jump relocations, so we don't have to worry about the format | |
12526 | of the offset in the .o file. Don't adjust relocations against | |
12527 | mips16 symbols, so that the linker can find them if it needs to set | |
12528 | up a stub. */ | |
12529 | ||
12530 | int | |
12531 | mips_fix_adjustable (fixp) | |
12532 | fixS *fixp; | |
12533 | { | |
ea4ff978 L |
12534 | #ifdef OBJ_ELF |
12535 | /* Prevent all adjustments to global symbols. */ | |
46bac6de | 12536 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour |
b25a253c | 12537 | && mips_pic != EMBEDDED_PIC |
bad9ca53 | 12538 | && (S_IS_EXTERNAL (fixp->fx_addsy) || S_IS_WEAK (fixp->fx_addsy))) |
ea4ff978 L |
12539 | return 0; |
12540 | #endif | |
252b5132 RH |
12541 | if (fixp->fx_r_type == BFD_RELOC_MIPS16_JMP) |
12542 | return 0; | |
12543 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT | |
12544 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
12545 | return 0; | |
12546 | if (fixp->fx_addsy == NULL) | |
12547 | return 1; | |
12548 | #ifdef OBJ_ELF | |
12549 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour | |
12550 | && S_GET_OTHER (fixp->fx_addsy) == STO_MIPS16 | |
12551 | && fixp->fx_subsy == NULL) | |
12552 | return 0; | |
12553 | #endif | |
12554 | return 1; | |
12555 | } | |
12556 | ||
12557 | /* Translate internal representation of relocation info to BFD target | |
12558 | format. */ | |
12559 | ||
12560 | arelent ** | |
12561 | tc_gen_reloc (section, fixp) | |
43841e91 | 12562 | asection *section ATTRIBUTE_UNUSED; |
252b5132 RH |
12563 | fixS *fixp; |
12564 | { | |
12565 | static arelent *retval[4]; | |
12566 | arelent *reloc; | |
12567 | bfd_reloc_code_real_type code; | |
12568 | ||
12569 | reloc = retval[0] = (arelent *) xmalloc (sizeof (arelent)); | |
12570 | retval[1] = NULL; | |
12571 | ||
49309057 ILT |
12572 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
12573 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
12574 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
12575 | ||
12576 | if (mips_pic == EMBEDDED_PIC | |
12577 | && SWITCH_TABLE (fixp)) | |
12578 | { | |
12579 | /* For a switch table entry we use a special reloc. The addend | |
12580 | is actually the difference between the reloc address and the | |
12581 | subtrahend. */ | |
12582 | reloc->addend = reloc->address - S_GET_VALUE (fixp->fx_subsy); | |
12583 | if (OUTPUT_FLAVOR != bfd_target_ecoff_flavour) | |
12584 | as_fatal (_("Double check fx_r_type in tc-mips.c:tc_gen_reloc")); | |
12585 | fixp->fx_r_type = BFD_RELOC_GPREL32; | |
12586 | } | |
12587 | else if (fixp->fx_r_type == BFD_RELOC_PCREL_LO16) | |
12588 | { | |
4514d474 CD |
12589 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) |
12590 | reloc->addend = fixp->fx_addnumber; | |
252b5132 | 12591 | else |
4514d474 CD |
12592 | { |
12593 | /* We use a special addend for an internal RELLO reloc. */ | |
12594 | if (symbol_section_p (fixp->fx_addsy)) | |
12595 | reloc->addend = reloc->address - S_GET_VALUE (fixp->fx_subsy); | |
12596 | else | |
12597 | reloc->addend = fixp->fx_addnumber + reloc->address; | |
12598 | } | |
252b5132 RH |
12599 | } |
12600 | else if (fixp->fx_r_type == BFD_RELOC_PCREL_HI16_S) | |
12601 | { | |
12602 | assert (fixp->fx_next != NULL | |
12603 | && fixp->fx_next->fx_r_type == BFD_RELOC_PCREL_LO16); | |
4514d474 CD |
12604 | |
12605 | /* The reloc is relative to the RELLO; adjust the addend | |
252b5132 | 12606 | accordingly. */ |
4514d474 CD |
12607 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) |
12608 | reloc->addend = fixp->fx_next->fx_addnumber; | |
252b5132 | 12609 | else |
4514d474 CD |
12610 | { |
12611 | /* We use a special addend for an internal RELHI reloc. */ | |
12612 | if (symbol_section_p (fixp->fx_addsy)) | |
12613 | reloc->addend = (fixp->fx_next->fx_frag->fr_address | |
12614 | + fixp->fx_next->fx_where | |
12615 | - S_GET_VALUE (fixp->fx_subsy)); | |
12616 | else | |
12617 | reloc->addend = (fixp->fx_addnumber | |
12618 | + fixp->fx_next->fx_frag->fr_address | |
12619 | + fixp->fx_next->fx_where); | |
12620 | } | |
252b5132 | 12621 | } |
4514d474 CD |
12622 | else if (fixp->fx_pcrel == 0 || OUTPUT_FLAVOR == bfd_target_elf_flavour) |
12623 | reloc->addend = fixp->fx_addnumber; | |
252b5132 RH |
12624 | else |
12625 | { | |
12626 | if (OUTPUT_FLAVOR != bfd_target_aout_flavour) | |
12627 | /* A gruesome hack which is a result of the gruesome gas reloc | |
12628 | handling. */ | |
12629 | reloc->addend = reloc->address; | |
12630 | else | |
12631 | reloc->addend = -reloc->address; | |
12632 | } | |
12633 | ||
12634 | /* If this is a variant frag, we may need to adjust the existing | |
12635 | reloc and generate a new one. */ | |
12636 | if (fixp->fx_frag->fr_opcode != NULL | |
cdf6fd85 | 12637 | && (fixp->fx_r_type == BFD_RELOC_GPREL16 |
252b5132 RH |
12638 | || fixp->fx_r_type == BFD_RELOC_MIPS_GOT16 |
12639 | || fixp->fx_r_type == BFD_RELOC_MIPS_CALL16 | |
12640 | || fixp->fx_r_type == BFD_RELOC_MIPS_GOT_HI16 | |
12641 | || fixp->fx_r_type == BFD_RELOC_MIPS_GOT_LO16 | |
12642 | || fixp->fx_r_type == BFD_RELOC_MIPS_CALL_HI16 | |
6478892d TS |
12643 | || fixp->fx_r_type == BFD_RELOC_MIPS_CALL_LO16) |
12644 | && ! HAVE_NEWABI) | |
252b5132 RH |
12645 | { |
12646 | arelent *reloc2; | |
12647 | ||
12648 | assert (! RELAX_MIPS16_P (fixp->fx_frag->fr_subtype)); | |
12649 | ||
12650 | /* If this is not the last reloc in this frag, then we have two | |
12651 | GPREL relocs, or a GOT_HI16/GOT_LO16 pair, or a | |
12652 | CALL_HI16/CALL_LO16, both of which are being replaced. Let | |
12653 | the second one handle all of them. */ | |
12654 | if (fixp->fx_next != NULL | |
12655 | && fixp->fx_frag == fixp->fx_next->fx_frag) | |
12656 | { | |
cdf6fd85 TS |
12657 | assert ((fixp->fx_r_type == BFD_RELOC_GPREL16 |
12658 | && fixp->fx_next->fx_r_type == BFD_RELOC_GPREL16) | |
252b5132 RH |
12659 | || (fixp->fx_r_type == BFD_RELOC_MIPS_GOT_HI16 |
12660 | && (fixp->fx_next->fx_r_type | |
12661 | == BFD_RELOC_MIPS_GOT_LO16)) | |
12662 | || (fixp->fx_r_type == BFD_RELOC_MIPS_CALL_HI16 | |
12663 | && (fixp->fx_next->fx_r_type | |
12664 | == BFD_RELOC_MIPS_CALL_LO16))); | |
12665 | retval[0] = NULL; | |
12666 | return retval; | |
12667 | } | |
12668 | ||
12669 | fixp->fx_where = fixp->fx_frag->fr_opcode - fixp->fx_frag->fr_literal; | |
12670 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
12671 | reloc2 = retval[1] = (arelent *) xmalloc (sizeof (arelent)); | |
12672 | retval[2] = NULL; | |
49309057 ILT |
12673 | reloc2->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
12674 | *reloc2->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
12675 | reloc2->address = (reloc->address |
12676 | + (RELAX_RELOC2 (fixp->fx_frag->fr_subtype) | |
12677 | - RELAX_RELOC1 (fixp->fx_frag->fr_subtype))); | |
12678 | reloc2->addend = fixp->fx_addnumber; | |
12679 | reloc2->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_LO16); | |
12680 | assert (reloc2->howto != NULL); | |
12681 | ||
12682 | if (RELAX_RELOC3 (fixp->fx_frag->fr_subtype)) | |
12683 | { | |
12684 | arelent *reloc3; | |
12685 | ||
12686 | reloc3 = retval[2] = (arelent *) xmalloc (sizeof (arelent)); | |
12687 | retval[3] = NULL; | |
12688 | *reloc3 = *reloc2; | |
12689 | reloc3->address += 4; | |
12690 | } | |
12691 | ||
12692 | if (mips_pic == NO_PIC) | |
12693 | { | |
cdf6fd85 | 12694 | assert (fixp->fx_r_type == BFD_RELOC_GPREL16); |
252b5132 RH |
12695 | fixp->fx_r_type = BFD_RELOC_HI16_S; |
12696 | } | |
12697 | else if (mips_pic == SVR4_PIC) | |
12698 | { | |
12699 | switch (fixp->fx_r_type) | |
12700 | { | |
12701 | default: | |
12702 | abort (); | |
12703 | case BFD_RELOC_MIPS_GOT16: | |
12704 | break; | |
12705 | case BFD_RELOC_MIPS_CALL16: | |
12706 | case BFD_RELOC_MIPS_GOT_LO16: | |
12707 | case BFD_RELOC_MIPS_CALL_LO16: | |
12708 | fixp->fx_r_type = BFD_RELOC_MIPS_GOT16; | |
12709 | break; | |
12710 | } | |
12711 | } | |
12712 | else | |
12713 | abort (); | |
12714 | } | |
12715 | ||
438c16b8 TS |
12716 | /* Since the old MIPS ELF ABI uses Rel instead of Rela, encode the vtable |
12717 | entry to be used in the relocation's section offset. */ | |
12718 | if (! HAVE_NEWABI && fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
252b5132 RH |
12719 | { |
12720 | reloc->address = reloc->addend; | |
12721 | reloc->addend = 0; | |
12722 | } | |
12723 | ||
12724 | /* Since DIFF_EXPR_OK is defined in tc-mips.h, it is possible that | |
12725 | fixup_segment converted a non-PC relative reloc into a PC | |
12726 | relative reloc. In such a case, we need to convert the reloc | |
12727 | code. */ | |
12728 | code = fixp->fx_r_type; | |
12729 | if (fixp->fx_pcrel) | |
12730 | { | |
12731 | switch (code) | |
12732 | { | |
12733 | case BFD_RELOC_8: | |
12734 | code = BFD_RELOC_8_PCREL; | |
12735 | break; | |
12736 | case BFD_RELOC_16: | |
12737 | code = BFD_RELOC_16_PCREL; | |
12738 | break; | |
12739 | case BFD_RELOC_32: | |
12740 | code = BFD_RELOC_32_PCREL; | |
12741 | break; | |
12742 | case BFD_RELOC_64: | |
12743 | code = BFD_RELOC_64_PCREL; | |
12744 | break; | |
12745 | case BFD_RELOC_8_PCREL: | |
12746 | case BFD_RELOC_16_PCREL: | |
12747 | case BFD_RELOC_32_PCREL: | |
12748 | case BFD_RELOC_64_PCREL: | |
12749 | case BFD_RELOC_16_PCREL_S2: | |
12750 | case BFD_RELOC_PCREL_HI16_S: | |
12751 | case BFD_RELOC_PCREL_LO16: | |
12752 | break; | |
12753 | default: | |
12754 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
12755 | _("Cannot make %s relocation PC relative"), | |
12756 | bfd_get_reloc_code_name (code)); | |
12757 | } | |
12758 | } | |
12759 | ||
add55e1f RS |
12760 | #ifdef OBJ_ELF |
12761 | /* md_apply_fix3 has a double-subtraction hack to get | |
12762 | bfd_install_relocation to behave nicely. GPREL relocations are | |
12763 | handled correctly without this hack, so undo it here. We can't | |
12764 | stop md_apply_fix3 from subtracting twice in the first place since | |
12765 | the fake addend is required for variant frags above. */ | |
12766 | if (fixp->fx_addsy != NULL && OUTPUT_FLAVOR == bfd_target_elf_flavour | |
98605598 | 12767 | && (code == BFD_RELOC_GPREL16 || code == BFD_RELOC_MIPS16_GPREL) |
add55e1f RS |
12768 | && reloc->addend != 0 |
12769 | && mips_need_elf_addend_fixup (fixp)) | |
12770 | reloc->addend += S_GET_VALUE (fixp->fx_addsy); | |
12771 | #endif | |
12772 | ||
252b5132 RH |
12773 | /* To support a PC relative reloc when generating embedded PIC code |
12774 | for ECOFF, we use a Cygnus extension. We check for that here to | |
12775 | make sure that we don't let such a reloc escape normally. */ | |
bb2d6cd7 GK |
12776 | if ((OUTPUT_FLAVOR == bfd_target_ecoff_flavour |
12777 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
252b5132 RH |
12778 | && code == BFD_RELOC_16_PCREL_S2 |
12779 | && mips_pic != EMBEDDED_PIC) | |
12780 | reloc->howto = NULL; | |
12781 | else | |
12782 | reloc->howto = bfd_reloc_type_lookup (stdoutput, code); | |
12783 | ||
12784 | if (reloc->howto == NULL) | |
12785 | { | |
12786 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
12787 | _("Can not represent %s relocation in this object file format"), | |
12788 | bfd_get_reloc_code_name (code)); | |
12789 | retval[0] = NULL; | |
12790 | } | |
12791 | ||
12792 | return retval; | |
12793 | } | |
12794 | ||
12795 | /* Relax a machine dependent frag. This returns the amount by which | |
12796 | the current size of the frag should change. */ | |
12797 | ||
12798 | int | |
12799 | mips_relax_frag (fragp, stretch) | |
12800 | fragS *fragp; | |
12801 | long stretch; | |
12802 | { | |
12803 | if (! RELAX_MIPS16_P (fragp->fr_subtype)) | |
12804 | return 0; | |
12805 | ||
c4e7957c | 12806 | if (mips16_extended_frag (fragp, NULL, stretch)) |
252b5132 RH |
12807 | { |
12808 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
12809 | return 0; | |
12810 | fragp->fr_subtype = RELAX_MIPS16_MARK_EXTENDED (fragp->fr_subtype); | |
12811 | return 2; | |
12812 | } | |
12813 | else | |
12814 | { | |
12815 | if (! RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
12816 | return 0; | |
12817 | fragp->fr_subtype = RELAX_MIPS16_CLEAR_EXTENDED (fragp->fr_subtype); | |
12818 | return -2; | |
12819 | } | |
12820 | ||
12821 | return 0; | |
12822 | } | |
12823 | ||
12824 | /* Convert a machine dependent frag. */ | |
12825 | ||
12826 | void | |
12827 | md_convert_frag (abfd, asec, fragp) | |
43841e91 | 12828 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
12829 | segT asec; |
12830 | fragS *fragp; | |
12831 | { | |
12832 | int old, new; | |
12833 | char *fixptr; | |
12834 | ||
12835 | if (RELAX_MIPS16_P (fragp->fr_subtype)) | |
12836 | { | |
12837 | int type; | |
12838 | register const struct mips16_immed_operand *op; | |
12839 | boolean small, ext; | |
12840 | offsetT val; | |
12841 | bfd_byte *buf; | |
12842 | unsigned long insn; | |
12843 | boolean use_extend; | |
12844 | unsigned short extend; | |
12845 | ||
12846 | type = RELAX_MIPS16_TYPE (fragp->fr_subtype); | |
12847 | op = mips16_immed_operands; | |
12848 | while (op->type != type) | |
12849 | ++op; | |
12850 | ||
12851 | if (RELAX_MIPS16_EXTENDED (fragp->fr_subtype)) | |
12852 | { | |
12853 | small = false; | |
12854 | ext = true; | |
12855 | } | |
12856 | else | |
12857 | { | |
12858 | small = true; | |
12859 | ext = false; | |
12860 | } | |
12861 | ||
6386f3a7 | 12862 | resolve_symbol_value (fragp->fr_symbol); |
252b5132 RH |
12863 | val = S_GET_VALUE (fragp->fr_symbol); |
12864 | if (op->pcrel) | |
12865 | { | |
12866 | addressT addr; | |
12867 | ||
12868 | addr = fragp->fr_address + fragp->fr_fix; | |
12869 | ||
12870 | /* The rules for the base address of a PC relative reloc are | |
12871 | complicated; see mips16_extended_frag. */ | |
12872 | if (type == 'p' || type == 'q') | |
12873 | { | |
12874 | addr += 2; | |
12875 | if (ext) | |
12876 | addr += 2; | |
12877 | /* Ignore the low bit in the target, since it will be | |
12878 | set for a text label. */ | |
12879 | if ((val & 1) != 0) | |
12880 | --val; | |
12881 | } | |
12882 | else if (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype)) | |
12883 | addr -= 4; | |
12884 | else if (RELAX_MIPS16_DSLOT (fragp->fr_subtype)) | |
12885 | addr -= 2; | |
12886 | ||
12887 | addr &= ~ (addressT) ((1 << op->shift) - 1); | |
12888 | val -= addr; | |
12889 | ||
12890 | /* Make sure the section winds up with the alignment we have | |
12891 | assumed. */ | |
12892 | if (op->shift > 0) | |
12893 | record_alignment (asec, op->shift); | |
12894 | } | |
12895 | ||
12896 | if (ext | |
12897 | && (RELAX_MIPS16_JAL_DSLOT (fragp->fr_subtype) | |
12898 | || RELAX_MIPS16_DSLOT (fragp->fr_subtype))) | |
12899 | as_warn_where (fragp->fr_file, fragp->fr_line, | |
12900 | _("extended instruction in delay slot")); | |
12901 | ||
12902 | buf = (bfd_byte *) (fragp->fr_literal + fragp->fr_fix); | |
12903 | ||
12904 | if (target_big_endian) | |
12905 | insn = bfd_getb16 (buf); | |
12906 | else | |
12907 | insn = bfd_getl16 (buf); | |
12908 | ||
12909 | mips16_immed (fragp->fr_file, fragp->fr_line, type, val, | |
12910 | RELAX_MIPS16_USER_EXT (fragp->fr_subtype), | |
12911 | small, ext, &insn, &use_extend, &extend); | |
12912 | ||
12913 | if (use_extend) | |
12914 | { | |
874e8986 | 12915 | md_number_to_chars ((char *) buf, 0xf000 | extend, 2); |
252b5132 RH |
12916 | fragp->fr_fix += 2; |
12917 | buf += 2; | |
12918 | } | |
12919 | ||
874e8986 | 12920 | md_number_to_chars ((char *) buf, insn, 2); |
252b5132 RH |
12921 | fragp->fr_fix += 2; |
12922 | buf += 2; | |
12923 | } | |
12924 | else | |
12925 | { | |
12926 | if (fragp->fr_opcode == NULL) | |
12927 | return; | |
12928 | ||
12929 | old = RELAX_OLD (fragp->fr_subtype); | |
12930 | new = RELAX_NEW (fragp->fr_subtype); | |
12931 | fixptr = fragp->fr_literal + fragp->fr_fix; | |
12932 | ||
12933 | if (new > 0) | |
12934 | memcpy (fixptr - old, fixptr, new); | |
12935 | ||
12936 | fragp->fr_fix += new - old; | |
12937 | } | |
12938 | } | |
12939 | ||
12940 | #ifdef OBJ_ELF | |
12941 | ||
12942 | /* This function is called after the relocs have been generated. | |
12943 | We've been storing mips16 text labels as odd. Here we convert them | |
12944 | back to even for the convenience of the debugger. */ | |
12945 | ||
12946 | void | |
12947 | mips_frob_file_after_relocs () | |
12948 | { | |
12949 | asymbol **syms; | |
12950 | unsigned int count, i; | |
12951 | ||
12952 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) | |
12953 | return; | |
12954 | ||
12955 | syms = bfd_get_outsymbols (stdoutput); | |
12956 | count = bfd_get_symcount (stdoutput); | |
12957 | for (i = 0; i < count; i++, syms++) | |
12958 | { | |
12959 | if (elf_symbol (*syms)->internal_elf_sym.st_other == STO_MIPS16 | |
12960 | && ((*syms)->value & 1) != 0) | |
12961 | { | |
12962 | (*syms)->value &= ~1; | |
12963 | /* If the symbol has an odd size, it was probably computed | |
12964 | incorrectly, so adjust that as well. */ | |
12965 | if ((elf_symbol (*syms)->internal_elf_sym.st_size & 1) != 0) | |
12966 | ++elf_symbol (*syms)->internal_elf_sym.st_size; | |
12967 | } | |
12968 | } | |
12969 | } | |
12970 | ||
12971 | #endif | |
12972 | ||
12973 | /* This function is called whenever a label is defined. It is used | |
12974 | when handling branch delays; if a branch has a label, we assume we | |
12975 | can not move it. */ | |
12976 | ||
12977 | void | |
12978 | mips_define_label (sym) | |
12979 | symbolS *sym; | |
12980 | { | |
12981 | struct insn_label_list *l; | |
12982 | ||
12983 | if (free_insn_labels == NULL) | |
12984 | l = (struct insn_label_list *) xmalloc (sizeof *l); | |
12985 | else | |
12986 | { | |
12987 | l = free_insn_labels; | |
12988 | free_insn_labels = l->next; | |
12989 | } | |
12990 | ||
12991 | l->label = sym; | |
12992 | l->next = insn_labels; | |
12993 | insn_labels = l; | |
12994 | } | |
12995 | \f | |
12996 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
12997 | ||
12998 | /* Some special processing for a MIPS ELF file. */ | |
12999 | ||
13000 | void | |
13001 | mips_elf_final_processing () | |
13002 | { | |
13003 | /* Write out the register information. */ | |
316f5878 | 13004 | if (mips_abi != N64_ABI) |
252b5132 RH |
13005 | { |
13006 | Elf32_RegInfo s; | |
13007 | ||
13008 | s.ri_gprmask = mips_gprmask; | |
13009 | s.ri_cprmask[0] = mips_cprmask[0]; | |
13010 | s.ri_cprmask[1] = mips_cprmask[1]; | |
13011 | s.ri_cprmask[2] = mips_cprmask[2]; | |
13012 | s.ri_cprmask[3] = mips_cprmask[3]; | |
13013 | /* The gp_value field is set by the MIPS ELF backend. */ | |
13014 | ||
13015 | bfd_mips_elf32_swap_reginfo_out (stdoutput, &s, | |
13016 | ((Elf32_External_RegInfo *) | |
13017 | mips_regmask_frag)); | |
13018 | } | |
13019 | else | |
13020 | { | |
13021 | Elf64_Internal_RegInfo s; | |
13022 | ||
13023 | s.ri_gprmask = mips_gprmask; | |
13024 | s.ri_pad = 0; | |
13025 | s.ri_cprmask[0] = mips_cprmask[0]; | |
13026 | s.ri_cprmask[1] = mips_cprmask[1]; | |
13027 | s.ri_cprmask[2] = mips_cprmask[2]; | |
13028 | s.ri_cprmask[3] = mips_cprmask[3]; | |
13029 | /* The gp_value field is set by the MIPS ELF backend. */ | |
13030 | ||
13031 | bfd_mips_elf64_swap_reginfo_out (stdoutput, &s, | |
13032 | ((Elf64_External_RegInfo *) | |
13033 | mips_regmask_frag)); | |
13034 | } | |
13035 | ||
13036 | /* Set the MIPS ELF flag bits. FIXME: There should probably be some | |
13037 | sort of BFD interface for this. */ | |
13038 | if (mips_any_noreorder) | |
13039 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_NOREORDER; | |
13040 | if (mips_pic != NO_PIC) | |
13041 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_PIC; | |
13042 | ||
98d3f06f | 13043 | /* Set MIPS ELF flags for ASEs. */ |
a4672219 TS |
13044 | if (file_ase_mips16) |
13045 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_M16; | |
1f25f5d3 CD |
13046 | #if 0 /* XXX FIXME */ |
13047 | if (file_ase_mips3d) | |
13048 | elf_elfheader (stdoutput)->e_flags |= ???; | |
13049 | #endif | |
deec1734 CD |
13050 | if (file_ase_mdmx) |
13051 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ARCH_ASE_MDMX; | |
1f25f5d3 | 13052 | |
bdaaa2e1 | 13053 | /* Set the MIPS ELF ABI flags. */ |
316f5878 | 13054 | if (mips_abi == O32_ABI && USE_E_MIPS_ABI_O32) |
252b5132 | 13055 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O32; |
316f5878 | 13056 | else if (mips_abi == O64_ABI) |
252b5132 | 13057 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_O64; |
316f5878 | 13058 | else if (mips_abi == EABI_ABI) |
252b5132 | 13059 | { |
316f5878 | 13060 | if (!file_mips_gp32) |
252b5132 RH |
13061 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI64; |
13062 | else | |
13063 | elf_elfheader (stdoutput)->e_flags |= E_MIPS_ABI_EABI32; | |
13064 | } | |
316f5878 | 13065 | else if (mips_abi == N32_ABI) |
be00bddd TS |
13066 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_ABI2; |
13067 | ||
c9914766 | 13068 | /* Nothing to do for N64_ABI. */ |
252b5132 RH |
13069 | |
13070 | if (mips_32bitmode) | |
13071 | elf_elfheader (stdoutput)->e_flags |= EF_MIPS_32BITMODE; | |
13072 | } | |
13073 | ||
13074 | #endif /* OBJ_ELF || OBJ_MAYBE_ELF */ | |
13075 | \f | |
beae10d5 KH |
13076 | typedef struct proc { |
13077 | symbolS *isym; | |
13078 | unsigned long reg_mask; | |
13079 | unsigned long reg_offset; | |
13080 | unsigned long fpreg_mask; | |
13081 | unsigned long fpreg_offset; | |
13082 | unsigned long frame_offset; | |
13083 | unsigned long frame_reg; | |
13084 | unsigned long pc_reg; | |
13085 | } procS; | |
252b5132 RH |
13086 | |
13087 | static procS cur_proc; | |
13088 | static procS *cur_proc_ptr; | |
13089 | static int numprocs; | |
13090 | ||
0a9ef439 | 13091 | /* Fill in an rs_align_code fragment. */ |
a19d8eb0 | 13092 | |
0a9ef439 RH |
13093 | void |
13094 | mips_handle_align (fragp) | |
13095 | fragS *fragp; | |
a19d8eb0 | 13096 | { |
0a9ef439 RH |
13097 | if (fragp->fr_type != rs_align_code) |
13098 | return; | |
13099 | ||
13100 | if (mips_opts.mips16) | |
a19d8eb0 CP |
13101 | { |
13102 | static const unsigned char be_nop[] = { 0x65, 0x00 }; | |
13103 | static const unsigned char le_nop[] = { 0x00, 0x65 }; | |
13104 | ||
0a9ef439 RH |
13105 | int bytes; |
13106 | char *p; | |
a19d8eb0 | 13107 | |
0a9ef439 RH |
13108 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; |
13109 | p = fragp->fr_literal + fragp->fr_fix; | |
13110 | ||
13111 | if (bytes & 1) | |
13112 | { | |
13113 | *p++ = 0; | |
f9419b05 | 13114 | fragp->fr_fix++; |
0a9ef439 RH |
13115 | } |
13116 | ||
13117 | memcpy (p, (target_big_endian ? be_nop : le_nop), 2); | |
13118 | fragp->fr_var = 2; | |
a19d8eb0 CP |
13119 | } |
13120 | ||
0a9ef439 | 13121 | /* For mips32, a nop is a zero, which we trivially get by doing nothing. */ |
a19d8eb0 CP |
13122 | } |
13123 | ||
252b5132 RH |
13124 | static void |
13125 | md_obj_begin () | |
13126 | { | |
13127 | } | |
13128 | ||
13129 | static void | |
13130 | md_obj_end () | |
13131 | { | |
13132 | /* check for premature end, nesting errors, etc */ | |
13133 | if (cur_proc_ptr) | |
9a41af64 | 13134 | as_warn (_("missing .end at end of assembly")); |
252b5132 RH |
13135 | } |
13136 | ||
13137 | static long | |
13138 | get_number () | |
13139 | { | |
13140 | int negative = 0; | |
13141 | long val = 0; | |
13142 | ||
13143 | if (*input_line_pointer == '-') | |
13144 | { | |
13145 | ++input_line_pointer; | |
13146 | negative = 1; | |
13147 | } | |
3882b010 | 13148 | if (!ISDIGIT (*input_line_pointer)) |
956cd1d6 | 13149 | as_bad (_("expected simple number")); |
252b5132 RH |
13150 | if (input_line_pointer[0] == '0') |
13151 | { | |
13152 | if (input_line_pointer[1] == 'x') | |
13153 | { | |
13154 | input_line_pointer += 2; | |
3882b010 | 13155 | while (ISXDIGIT (*input_line_pointer)) |
252b5132 RH |
13156 | { |
13157 | val <<= 4; | |
13158 | val |= hex_value (*input_line_pointer++); | |
13159 | } | |
13160 | return negative ? -val : val; | |
13161 | } | |
13162 | else | |
13163 | { | |
13164 | ++input_line_pointer; | |
3882b010 | 13165 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
13166 | { |
13167 | val <<= 3; | |
13168 | val |= *input_line_pointer++ - '0'; | |
13169 | } | |
13170 | return negative ? -val : val; | |
13171 | } | |
13172 | } | |
3882b010 | 13173 | if (!ISDIGIT (*input_line_pointer)) |
252b5132 RH |
13174 | { |
13175 | printf (_(" *input_line_pointer == '%c' 0x%02x\n"), | |
13176 | *input_line_pointer, *input_line_pointer); | |
956cd1d6 | 13177 | as_warn (_("invalid number")); |
252b5132 RH |
13178 | return -1; |
13179 | } | |
3882b010 | 13180 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
13181 | { |
13182 | val *= 10; | |
13183 | val += *input_line_pointer++ - '0'; | |
13184 | } | |
13185 | return negative ? -val : val; | |
13186 | } | |
13187 | ||
13188 | /* The .file directive; just like the usual .file directive, but there | |
c5dd6aab DJ |
13189 | is an initial number which is the ECOFF file index. In the non-ECOFF |
13190 | case .file implies DWARF-2. */ | |
13191 | ||
13192 | static void | |
13193 | s_mips_file (x) | |
13194 | int x ATTRIBUTE_UNUSED; | |
13195 | { | |
ecb4347a DJ |
13196 | static int first_file_directive = 0; |
13197 | ||
c5dd6aab DJ |
13198 | if (ECOFF_DEBUGGING) |
13199 | { | |
13200 | get_number (); | |
13201 | s_app_file (0); | |
13202 | } | |
13203 | else | |
ecb4347a DJ |
13204 | { |
13205 | char *filename; | |
13206 | ||
13207 | filename = dwarf2_directive_file (0); | |
13208 | ||
13209 | /* Versions of GCC up to 3.1 start files with a ".file" | |
13210 | directive even for stabs output. Make sure that this | |
13211 | ".file" is handled. Note that you need a version of GCC | |
13212 | after 3.1 in order to support DWARF-2 on MIPS. */ | |
13213 | if (filename != NULL && ! first_file_directive) | |
13214 | { | |
13215 | (void) new_logical_line (filename, -1); | |
13216 | s_app_file_string (filename); | |
13217 | } | |
13218 | first_file_directive = 1; | |
13219 | } | |
c5dd6aab DJ |
13220 | } |
13221 | ||
13222 | /* The .loc directive, implying DWARF-2. */ | |
252b5132 RH |
13223 | |
13224 | static void | |
c5dd6aab | 13225 | s_mips_loc (x) |
43841e91 | 13226 | int x ATTRIBUTE_UNUSED; |
252b5132 | 13227 | { |
c5dd6aab DJ |
13228 | if (!ECOFF_DEBUGGING) |
13229 | dwarf2_directive_loc (0); | |
252b5132 RH |
13230 | } |
13231 | ||
252b5132 RH |
13232 | /* The .end directive. */ |
13233 | ||
13234 | static void | |
13235 | s_mips_end (x) | |
43841e91 | 13236 | int x ATTRIBUTE_UNUSED; |
252b5132 RH |
13237 | { |
13238 | symbolS *p; | |
13239 | int maybe_text; | |
13240 | ||
7a621144 DJ |
13241 | /* Following functions need their own .frame and .cprestore directives. */ |
13242 | mips_frame_reg_valid = 0; | |
13243 | mips_cprestore_valid = 0; | |
13244 | ||
252b5132 RH |
13245 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
13246 | { | |
13247 | p = get_symbol (); | |
13248 | demand_empty_rest_of_line (); | |
13249 | } | |
13250 | else | |
13251 | p = NULL; | |
13252 | ||
13253 | #ifdef BFD_ASSEMBLER | |
13254 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) != 0) | |
13255 | maybe_text = 1; | |
13256 | else | |
13257 | maybe_text = 0; | |
13258 | #else | |
13259 | if (now_seg != data_section && now_seg != bss_section) | |
13260 | maybe_text = 1; | |
13261 | else | |
13262 | maybe_text = 0; | |
13263 | #endif | |
13264 | ||
13265 | if (!maybe_text) | |
13266 | as_warn (_(".end not in text section")); | |
13267 | ||
13268 | if (!cur_proc_ptr) | |
13269 | { | |
13270 | as_warn (_(".end directive without a preceding .ent directive.")); | |
13271 | demand_empty_rest_of_line (); | |
13272 | return; | |
13273 | } | |
13274 | ||
13275 | if (p != NULL) | |
13276 | { | |
13277 | assert (S_GET_NAME (p)); | |
13278 | if (strcmp (S_GET_NAME (p), S_GET_NAME (cur_proc_ptr->isym))) | |
13279 | as_warn (_(".end symbol does not match .ent symbol.")); | |
ecb4347a DJ |
13280 | |
13281 | if (debug_type == DEBUG_STABS) | |
13282 | stabs_generate_asm_endfunc (S_GET_NAME (p), | |
13283 | S_GET_NAME (p)); | |
252b5132 RH |
13284 | } |
13285 | else | |
13286 | as_warn (_(".end directive missing or unknown symbol")); | |
13287 | ||
ecb4347a DJ |
13288 | #ifdef OBJ_ELF |
13289 | /* Generate a .pdr section. */ | |
13290 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour && ! ECOFF_DEBUGGING) | |
13291 | { | |
13292 | segT saved_seg = now_seg; | |
13293 | subsegT saved_subseg = now_subseg; | |
13294 | valueT dot; | |
13295 | expressionS exp; | |
13296 | char *fragp; | |
252b5132 | 13297 | |
ecb4347a | 13298 | dot = frag_now_fix (); |
252b5132 RH |
13299 | |
13300 | #ifdef md_flush_pending_output | |
ecb4347a | 13301 | md_flush_pending_output (); |
252b5132 RH |
13302 | #endif |
13303 | ||
ecb4347a DJ |
13304 | assert (pdr_seg); |
13305 | subseg_set (pdr_seg, 0); | |
252b5132 | 13306 | |
ecb4347a DJ |
13307 | /* Write the symbol. */ |
13308 | exp.X_op = O_symbol; | |
13309 | exp.X_add_symbol = p; | |
13310 | exp.X_add_number = 0; | |
13311 | emit_expr (&exp, 4); | |
252b5132 | 13312 | |
ecb4347a | 13313 | fragp = frag_more (7 * 4); |
252b5132 | 13314 | |
ecb4347a DJ |
13315 | md_number_to_chars (fragp, (valueT) cur_proc_ptr->reg_mask, 4); |
13316 | md_number_to_chars (fragp + 4, (valueT) cur_proc_ptr->reg_offset, 4); | |
13317 | md_number_to_chars (fragp + 8, (valueT) cur_proc_ptr->fpreg_mask, 4); | |
13318 | md_number_to_chars (fragp + 12, (valueT) cur_proc_ptr->fpreg_offset, 4); | |
13319 | md_number_to_chars (fragp + 16, (valueT) cur_proc_ptr->frame_offset, 4); | |
13320 | md_number_to_chars (fragp + 20, (valueT) cur_proc_ptr->frame_reg, 4); | |
13321 | md_number_to_chars (fragp + 24, (valueT) cur_proc_ptr->pc_reg, 4); | |
252b5132 | 13322 | |
ecb4347a DJ |
13323 | subseg_set (saved_seg, saved_subseg); |
13324 | } | |
13325 | #endif /* OBJ_ELF */ | |
252b5132 RH |
13326 | |
13327 | cur_proc_ptr = NULL; | |
13328 | } | |
13329 | ||
13330 | /* The .aent and .ent directives. */ | |
13331 | ||
13332 | static void | |
13333 | s_mips_ent (aent) | |
13334 | int aent; | |
13335 | { | |
252b5132 RH |
13336 | symbolS *symbolP; |
13337 | int maybe_text; | |
13338 | ||
13339 | symbolP = get_symbol (); | |
13340 | if (*input_line_pointer == ',') | |
f9419b05 | 13341 | ++input_line_pointer; |
252b5132 | 13342 | SKIP_WHITESPACE (); |
3882b010 | 13343 | if (ISDIGIT (*input_line_pointer) |
d9a62219 | 13344 | || *input_line_pointer == '-') |
874e8986 | 13345 | get_number (); |
252b5132 RH |
13346 | |
13347 | #ifdef BFD_ASSEMBLER | |
13348 | if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) != 0) | |
13349 | maybe_text = 1; | |
13350 | else | |
13351 | maybe_text = 0; | |
13352 | #else | |
13353 | if (now_seg != data_section && now_seg != bss_section) | |
13354 | maybe_text = 1; | |
13355 | else | |
13356 | maybe_text = 0; | |
13357 | #endif | |
13358 | ||
13359 | if (!maybe_text) | |
13360 | as_warn (_(".ent or .aent not in text section.")); | |
13361 | ||
13362 | if (!aent && cur_proc_ptr) | |
9a41af64 | 13363 | as_warn (_("missing .end")); |
252b5132 RH |
13364 | |
13365 | if (!aent) | |
13366 | { | |
7a621144 DJ |
13367 | /* This function needs its own .frame and .cprestore directives. */ |
13368 | mips_frame_reg_valid = 0; | |
13369 | mips_cprestore_valid = 0; | |
13370 | ||
252b5132 RH |
13371 | cur_proc_ptr = &cur_proc; |
13372 | memset (cur_proc_ptr, '\0', sizeof (procS)); | |
13373 | ||
13374 | cur_proc_ptr->isym = symbolP; | |
13375 | ||
49309057 | 13376 | symbol_get_bfdsym (symbolP)->flags |= BSF_FUNCTION; |
252b5132 | 13377 | |
f9419b05 | 13378 | ++numprocs; |
ecb4347a DJ |
13379 | |
13380 | if (debug_type == DEBUG_STABS) | |
13381 | stabs_generate_asm_func (S_GET_NAME (symbolP), | |
13382 | S_GET_NAME (symbolP)); | |
252b5132 RH |
13383 | } |
13384 | ||
13385 | demand_empty_rest_of_line (); | |
13386 | } | |
13387 | ||
13388 | /* The .frame directive. If the mdebug section is present (IRIX 5 native) | |
bdaaa2e1 | 13389 | then ecoff.c (ecoff_directive_frame) is used. For embedded targets, |
252b5132 | 13390 | s_mips_frame is used so that we can set the PDR information correctly. |
bdaaa2e1 | 13391 | We can't use the ecoff routines because they make reference to the ecoff |
252b5132 RH |
13392 | symbol table (in the mdebug section). */ |
13393 | ||
13394 | static void | |
13395 | s_mips_frame (ignore) | |
2b3c5a5d | 13396 | int ignore ATTRIBUTE_UNUSED; |
252b5132 | 13397 | { |
ecb4347a DJ |
13398 | #ifdef OBJ_ELF |
13399 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour && ! ECOFF_DEBUGGING) | |
13400 | { | |
13401 | long val; | |
252b5132 | 13402 | |
ecb4347a DJ |
13403 | if (cur_proc_ptr == (procS *) NULL) |
13404 | { | |
13405 | as_warn (_(".frame outside of .ent")); | |
13406 | demand_empty_rest_of_line (); | |
13407 | return; | |
13408 | } | |
252b5132 | 13409 | |
ecb4347a DJ |
13410 | cur_proc_ptr->frame_reg = tc_get_register (1); |
13411 | ||
13412 | SKIP_WHITESPACE (); | |
13413 | if (*input_line_pointer++ != ',' | |
13414 | || get_absolute_expression_and_terminator (&val) != ',') | |
13415 | { | |
13416 | as_warn (_("Bad .frame directive")); | |
13417 | --input_line_pointer; | |
13418 | demand_empty_rest_of_line (); | |
13419 | return; | |
13420 | } | |
252b5132 | 13421 | |
ecb4347a DJ |
13422 | cur_proc_ptr->frame_offset = val; |
13423 | cur_proc_ptr->pc_reg = tc_get_register (0); | |
252b5132 | 13424 | |
252b5132 | 13425 | demand_empty_rest_of_line (); |
252b5132 | 13426 | } |
ecb4347a DJ |
13427 | else |
13428 | #endif /* OBJ_ELF */ | |
13429 | s_ignore (ignore); | |
252b5132 RH |
13430 | } |
13431 | ||
bdaaa2e1 KH |
13432 | /* The .fmask and .mask directives. If the mdebug section is present |
13433 | (IRIX 5 native) then ecoff.c (ecoff_directive_mask) is used. For | |
252b5132 | 13434 | embedded targets, s_mips_mask is used so that we can set the PDR |
bdaaa2e1 | 13435 | information correctly. We can't use the ecoff routines because they |
252b5132 RH |
13436 | make reference to the ecoff symbol table (in the mdebug section). */ |
13437 | ||
13438 | static void | |
13439 | s_mips_mask (reg_type) | |
13440 | char reg_type; | |
13441 | { | |
ecb4347a DJ |
13442 | #ifdef OBJ_ELF |
13443 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour && ! ECOFF_DEBUGGING) | |
252b5132 | 13444 | { |
ecb4347a | 13445 | long mask, off; |
252b5132 | 13446 | |
ecb4347a DJ |
13447 | if (cur_proc_ptr == (procS *) NULL) |
13448 | { | |
13449 | as_warn (_(".mask/.fmask outside of .ent")); | |
13450 | demand_empty_rest_of_line (); | |
13451 | return; | |
13452 | } | |
252b5132 | 13453 | |
ecb4347a DJ |
13454 | if (get_absolute_expression_and_terminator (&mask) != ',') |
13455 | { | |
13456 | as_warn (_("Bad .mask/.fmask directive")); | |
13457 | --input_line_pointer; | |
13458 | demand_empty_rest_of_line (); | |
13459 | return; | |
13460 | } | |
252b5132 | 13461 | |
ecb4347a DJ |
13462 | off = get_absolute_expression (); |
13463 | ||
13464 | if (reg_type == 'F') | |
13465 | { | |
13466 | cur_proc_ptr->fpreg_mask = mask; | |
13467 | cur_proc_ptr->fpreg_offset = off; | |
13468 | } | |
13469 | else | |
13470 | { | |
13471 | cur_proc_ptr->reg_mask = mask; | |
13472 | cur_proc_ptr->reg_offset = off; | |
13473 | } | |
13474 | ||
13475 | demand_empty_rest_of_line (); | |
252b5132 RH |
13476 | } |
13477 | else | |
ecb4347a DJ |
13478 | #endif /* OBJ_ELF */ |
13479 | s_ignore (reg_type); | |
252b5132 RH |
13480 | } |
13481 | ||
13482 | /* The .loc directive. */ | |
13483 | ||
13484 | #if 0 | |
13485 | static void | |
13486 | s_loc (x) | |
13487 | int x; | |
13488 | { | |
13489 | symbolS *symbolP; | |
13490 | int lineno; | |
13491 | int addroff; | |
13492 | ||
13493 | assert (now_seg == text_section); | |
13494 | ||
13495 | lineno = get_number (); | |
13496 | addroff = frag_now_fix (); | |
13497 | ||
13498 | symbolP = symbol_new ("", N_SLINE, addroff, frag_now); | |
13499 | S_SET_TYPE (symbolP, N_SLINE); | |
13500 | S_SET_OTHER (symbolP, 0); | |
13501 | S_SET_DESC (symbolP, lineno); | |
13502 | symbolP->sy_segment = now_seg; | |
13503 | } | |
13504 | #endif | |
e7af610e | 13505 | |
316f5878 RS |
13506 | /* A table describing all the processors gas knows about. Names are |
13507 | matched in the order listed. | |
e7af610e | 13508 | |
316f5878 RS |
13509 | To ease comparison, please keep this table in the same order as |
13510 | gcc's mips_cpu_info_table[]. */ | |
e972090a NC |
13511 | static const struct mips_cpu_info mips_cpu_info_table[] = |
13512 | { | |
316f5878 RS |
13513 | /* Entries for generic ISAs */ |
13514 | { "mips1", 1, ISA_MIPS1, CPU_R3000 }, | |
13515 | { "mips2", 1, ISA_MIPS2, CPU_R6000 }, | |
13516 | { "mips3", 1, ISA_MIPS3, CPU_R4000 }, | |
13517 | { "mips4", 1, ISA_MIPS4, CPU_R8000 }, | |
13518 | { "mips5", 1, ISA_MIPS5, CPU_MIPS5 }, | |
13519 | { "mips32", 1, ISA_MIPS32, CPU_MIPS32 }, | |
13520 | { "mips64", 1, ISA_MIPS64, CPU_MIPS64 }, | |
13521 | ||
13522 | /* MIPS I */ | |
13523 | { "r3000", 0, ISA_MIPS1, CPU_R3000 }, | |
13524 | { "r2000", 0, ISA_MIPS1, CPU_R3000 }, | |
13525 | { "r3900", 0, ISA_MIPS1, CPU_R3900 }, | |
13526 | ||
13527 | /* MIPS II */ | |
13528 | { "r6000", 0, ISA_MIPS2, CPU_R6000 }, | |
13529 | ||
13530 | /* MIPS III */ | |
13531 | { "r4000", 0, ISA_MIPS3, CPU_R4000 }, | |
13532 | { "r4010", 0, ISA_MIPS2, CPU_R4010 }, | |
13533 | { "vr4100", 0, ISA_MIPS3, CPU_VR4100 }, | |
13534 | { "vr4111", 0, ISA_MIPS3, CPU_R4111 }, | |
13535 | { "vr4300", 0, ISA_MIPS3, CPU_R4300 }, | |
13536 | { "r4400", 0, ISA_MIPS3, CPU_R4400 }, | |
13537 | { "r4600", 0, ISA_MIPS3, CPU_R4600 }, | |
13538 | { "orion", 0, ISA_MIPS3, CPU_R4600 }, | |
13539 | { "r4650", 0, ISA_MIPS3, CPU_R4650 }, | |
13540 | ||
13541 | /* MIPS IV */ | |
13542 | { "r8000", 0, ISA_MIPS4, CPU_R8000 }, | |
13543 | { "r10000", 0, ISA_MIPS4, CPU_R10000 }, | |
13544 | { "r12000", 0, ISA_MIPS4, CPU_R12000 }, | |
13545 | { "vr5000", 0, ISA_MIPS4, CPU_R5000 }, | |
13546 | { "rm5200", 0, ISA_MIPS4, CPU_R5000 }, | |
13547 | { "rm5230", 0, ISA_MIPS4, CPU_R5000 }, | |
13548 | { "rm5231", 0, ISA_MIPS4, CPU_R5000 }, | |
13549 | { "rm5261", 0, ISA_MIPS4, CPU_R5000 }, | |
13550 | { "rm5721", 0, ISA_MIPS4, CPU_R5000 }, | |
13551 | { "r7000", 0, ISA_MIPS4, CPU_R5000 }, | |
13552 | ||
13553 | /* MIPS 32 */ | |
13554 | { "4kc", 0, ISA_MIPS32, CPU_MIPS32, }, | |
13555 | { "4km", 0, ISA_MIPS32, CPU_MIPS32 }, | |
13556 | { "4kp", 0, ISA_MIPS32, CPU_MIPS32 }, | |
e7af610e | 13557 | |
316f5878 RS |
13558 | /* MIPS 64 */ |
13559 | { "5kc", 0, ISA_MIPS64, CPU_MIPS64 }, | |
13560 | { "20kc", 0, ISA_MIPS64, CPU_MIPS64 }, | |
e7af610e | 13561 | |
c7a23324 | 13562 | /* Broadcom SB-1 CPU core */ |
316f5878 | 13563 | { "sb1", 0, ISA_MIPS64, CPU_SB1 }, |
e7af610e | 13564 | |
316f5878 RS |
13565 | /* End marker */ |
13566 | { NULL, 0, 0, 0 } | |
13567 | }; | |
e7af610e | 13568 | |
84ea6cf2 | 13569 | |
316f5878 RS |
13570 | /* Return true if GIVEN is the same as CANONICAL, or if it is CANONICAL |
13571 | with a final "000" replaced by "k". Ignore case. | |
e7af610e | 13572 | |
316f5878 | 13573 | Note: this function is shared between GCC and GAS. */ |
c6c98b38 | 13574 | |
316f5878 RS |
13575 | static boolean |
13576 | mips_strict_matching_cpu_name_p (canonical, given) | |
13577 | const char *canonical, *given; | |
13578 | { | |
13579 | while (*given != 0 && TOLOWER (*given) == TOLOWER (*canonical)) | |
13580 | given++, canonical++; | |
13581 | ||
13582 | return ((*given == 0 && *canonical == 0) | |
13583 | || (strcmp (canonical, "000") == 0 && strcasecmp (given, "k") == 0)); | |
13584 | } | |
13585 | ||
13586 | ||
13587 | /* Return true if GIVEN matches CANONICAL, where GIVEN is a user-supplied | |
13588 | CPU name. We've traditionally allowed a lot of variation here. | |
13589 | ||
13590 | Note: this function is shared between GCC and GAS. */ | |
13591 | ||
13592 | static boolean | |
13593 | mips_matching_cpu_name_p (canonical, given) | |
13594 | const char *canonical, *given; | |
13595 | { | |
13596 | /* First see if the name matches exactly, or with a final "000" | |
13597 | turned into "k". */ | |
13598 | if (mips_strict_matching_cpu_name_p (canonical, given)) | |
13599 | return true; | |
13600 | ||
13601 | /* If not, try comparing based on numerical designation alone. | |
13602 | See if GIVEN is an unadorned number, or 'r' followed by a number. */ | |
13603 | if (TOLOWER (*given) == 'r') | |
13604 | given++; | |
13605 | if (!ISDIGIT (*given)) | |
13606 | return false; | |
13607 | ||
13608 | /* Skip over some well-known prefixes in the canonical name, | |
13609 | hoping to find a number there too. */ | |
13610 | if (TOLOWER (canonical[0]) == 'v' && TOLOWER (canonical[1]) == 'r') | |
13611 | canonical += 2; | |
13612 | else if (TOLOWER (canonical[0]) == 'r' && TOLOWER (canonical[1]) == 'm') | |
13613 | canonical += 2; | |
13614 | else if (TOLOWER (canonical[0]) == 'r') | |
13615 | canonical += 1; | |
13616 | ||
13617 | return mips_strict_matching_cpu_name_p (canonical, given); | |
13618 | } | |
13619 | ||
13620 | ||
13621 | /* Parse an option that takes the name of a processor as its argument. | |
13622 | OPTION is the name of the option and CPU_STRING is the argument. | |
13623 | Return the corresponding processor enumeration if the CPU_STRING is | |
13624 | recognized, otherwise report an error and return null. | |
13625 | ||
13626 | A similar function exists in GCC. */ | |
e7af610e NC |
13627 | |
13628 | static const struct mips_cpu_info * | |
316f5878 RS |
13629 | mips_parse_cpu (option, cpu_string) |
13630 | const char *option, *cpu_string; | |
e7af610e | 13631 | { |
316f5878 | 13632 | const struct mips_cpu_info *p; |
e7af610e | 13633 | |
316f5878 RS |
13634 | /* 'from-abi' selects the most compatible architecture for the given |
13635 | ABI: MIPS I for 32-bit ABIs and MIPS III for 64-bit ABIs. For the | |
13636 | EABIs, we have to decide whether we're using the 32-bit or 64-bit | |
13637 | version. Look first at the -mgp options, if given, otherwise base | |
13638 | the choice on MIPS_DEFAULT_64BIT. | |
e7af610e | 13639 | |
316f5878 RS |
13640 | Treat NO_ABI like the EABIs. One reason to do this is that the |
13641 | plain 'mips' and 'mips64' configs have 'from-abi' as their default | |
13642 | architecture. This code picks MIPS I for 'mips' and MIPS III for | |
13643 | 'mips64', just as we did in the days before 'from-abi'. */ | |
13644 | if (strcasecmp (cpu_string, "from-abi") == 0) | |
13645 | { | |
13646 | if (ABI_NEEDS_32BIT_REGS (mips_abi)) | |
13647 | return mips_cpu_info_from_isa (ISA_MIPS1); | |
13648 | ||
13649 | if (ABI_NEEDS_64BIT_REGS (mips_abi)) | |
13650 | return mips_cpu_info_from_isa (ISA_MIPS3); | |
13651 | ||
13652 | if (file_mips_gp32 >= 0) | |
13653 | return mips_cpu_info_from_isa (file_mips_gp32 ? ISA_MIPS1 : ISA_MIPS3); | |
13654 | ||
13655 | return mips_cpu_info_from_isa (MIPS_DEFAULT_64BIT | |
13656 | ? ISA_MIPS3 | |
13657 | : ISA_MIPS1); | |
13658 | } | |
13659 | ||
13660 | /* 'default' has traditionally been a no-op. Probably not very useful. */ | |
13661 | if (strcasecmp (cpu_string, "default") == 0) | |
13662 | return 0; | |
13663 | ||
13664 | for (p = mips_cpu_info_table; p->name != 0; p++) | |
13665 | if (mips_matching_cpu_name_p (p->name, cpu_string)) | |
13666 | return p; | |
13667 | ||
13668 | as_bad ("Bad value (%s) for %s", cpu_string, option); | |
13669 | return 0; | |
e7af610e NC |
13670 | } |
13671 | ||
316f5878 RS |
13672 | /* Return the canonical processor information for ISA (a member of the |
13673 | ISA_MIPS* enumeration). */ | |
13674 | ||
e7af610e NC |
13675 | static const struct mips_cpu_info * |
13676 | mips_cpu_info_from_isa (isa) | |
13677 | int isa; | |
13678 | { | |
13679 | int i; | |
13680 | ||
13681 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
13682 | if (mips_cpu_info_table[i].is_isa | |
316f5878 | 13683 | && isa == mips_cpu_info_table[i].isa) |
e7af610e NC |
13684 | return (&mips_cpu_info_table[i]); |
13685 | ||
e972090a | 13686 | return NULL; |
e7af610e | 13687 | } |
316f5878 RS |
13688 | \f |
13689 | static void | |
13690 | show (stream, string, col_p, first_p) | |
13691 | FILE *stream; | |
13692 | const char *string; | |
13693 | int *col_p; | |
13694 | int *first_p; | |
13695 | { | |
13696 | if (*first_p) | |
13697 | { | |
13698 | fprintf (stream, "%24s", ""); | |
13699 | *col_p = 24; | |
13700 | } | |
13701 | else | |
13702 | { | |
13703 | fprintf (stream, ", "); | |
13704 | *col_p += 2; | |
13705 | } | |
e7af610e | 13706 | |
316f5878 RS |
13707 | if (*col_p + strlen (string) > 72) |
13708 | { | |
13709 | fprintf (stream, "\n%24s", ""); | |
13710 | *col_p = 24; | |
13711 | } | |
13712 | ||
13713 | fprintf (stream, "%s", string); | |
13714 | *col_p += strlen (string); | |
13715 | ||
13716 | *first_p = 0; | |
13717 | } | |
13718 | ||
13719 | void | |
13720 | md_show_usage (stream) | |
13721 | FILE *stream; | |
e7af610e | 13722 | { |
316f5878 RS |
13723 | int column, first; |
13724 | size_t i; | |
13725 | ||
13726 | fprintf (stream, _("\ | |
13727 | MIPS options:\n\ | |
13728 | -membedded-pic generate embedded position independent code\n\ | |
13729 | -EB generate big endian output\n\ | |
13730 | -EL generate little endian output\n\ | |
13731 | -g, -g2 do not remove unneeded NOPs or swap branches\n\ | |
13732 | -G NUM allow referencing objects up to NUM bytes\n\ | |
13733 | implicitly with the gp register [default 8]\n")); | |
13734 | fprintf (stream, _("\ | |
13735 | -mips1 generate MIPS ISA I instructions\n\ | |
13736 | -mips2 generate MIPS ISA II instructions\n\ | |
13737 | -mips3 generate MIPS ISA III instructions\n\ | |
13738 | -mips4 generate MIPS ISA IV instructions\n\ | |
13739 | -mips5 generate MIPS ISA V instructions\n\ | |
13740 | -mips32 generate MIPS32 ISA instructions\n\ | |
13741 | -mips64 generate MIPS64 ISA instructions\n\ | |
13742 | -march=CPU/-mtune=CPU generate code/schedule for CPU, where CPU is one of:\n")); | |
13743 | ||
13744 | first = 1; | |
e7af610e NC |
13745 | |
13746 | for (i = 0; mips_cpu_info_table[i].name != NULL; i++) | |
316f5878 RS |
13747 | show (stream, mips_cpu_info_table[i].name, &column, &first); |
13748 | show (stream, "from-abi", &column, &first); | |
13749 | fputc ('\n', stream); | |
e7af610e | 13750 | |
316f5878 RS |
13751 | fprintf (stream, _("\ |
13752 | -mCPU equivalent to -march=CPU -mtune=CPU. Deprecated.\n\ | |
13753 | -no-mCPU don't generate code specific to CPU.\n\ | |
13754 | For -mCPU and -no-mCPU, CPU must be one of:\n")); | |
13755 | ||
13756 | first = 1; | |
13757 | ||
13758 | show (stream, "3900", &column, &first); | |
13759 | show (stream, "4010", &column, &first); | |
13760 | show (stream, "4100", &column, &first); | |
13761 | show (stream, "4650", &column, &first); | |
13762 | fputc ('\n', stream); | |
13763 | ||
13764 | fprintf (stream, _("\ | |
13765 | -mips16 generate mips16 instructions\n\ | |
13766 | -no-mips16 do not generate mips16 instructions\n")); | |
13767 | fprintf (stream, _("\ | |
13768 | -mgp32 use 32-bit GPRs, regardless of the chosen ISA\n\ | |
13769 | -mfp32 use 32-bit FPRs, regardless of the chosen ISA\n\ | |
13770 | -O0 remove unneeded NOPs, do not swap branches\n\ | |
13771 | -O remove unneeded NOPs and swap branches\n\ | |
13772 | -n warn about NOPs generated from macros\n\ | |
13773 | --[no-]construct-floats [dis]allow floating point values to be constructed\n\ | |
13774 | --trap, --no-break trap exception on div by 0 and mult overflow\n\ | |
13775 | --break, --no-trap break exception on div by 0 and mult overflow\n")); | |
13776 | #ifdef OBJ_ELF | |
13777 | fprintf (stream, _("\ | |
13778 | -KPIC, -call_shared generate SVR4 position independent code\n\ | |
13779 | -non_shared do not generate position independent code\n\ | |
13780 | -xgot assume a 32 bit GOT\n\ | |
13781 | -mabi=ABI create ABI conformant object file for:\n")); | |
13782 | ||
13783 | first = 1; | |
13784 | ||
13785 | show (stream, "32", &column, &first); | |
13786 | show (stream, "o64", &column, &first); | |
13787 | show (stream, "n32", &column, &first); | |
13788 | show (stream, "64", &column, &first); | |
13789 | show (stream, "eabi", &column, &first); | |
13790 | ||
13791 | fputc ('\n', stream); | |
13792 | ||
13793 | fprintf (stream, _("\ | |
13794 | -32 create o32 ABI object file (default)\n\ | |
13795 | -n32 create n32 ABI object file\n\ | |
13796 | -64 create 64 ABI object file\n")); | |
13797 | #endif | |
e7af610e | 13798 | } |