Commit | Line | Data |
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252b5132 | 1 | /* tc-alpha.c - Processor-specific code for the DEC Alpha AXP CPU. |
cc8a6dd0 | 2 | Copyright 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
af1c1010 | 3 | 2001, 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by Carnegie Mellon University, 1993. |
5 | Written by Alessandro Forin, based on earlier gas-1.38 target CPU files. | |
6 | Modified by Ken Raeburn for gas-2.x and ECOFF support. | |
7 | Modified by Richard Henderson for ELF support. | |
9de8d8f1 | 8 | Modified by Klaus K"ampf for EVAX (OpenVMS/Alpha) support. |
252b5132 RH |
9 | |
10 | This file is part of GAS, the GNU Assembler. | |
11 | ||
12 | GAS is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 14 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
15 | any later version. |
16 | ||
17 | GAS is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
24 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
25 | 02110-1301, USA. */ | |
252b5132 | 26 | |
ea1562b3 NC |
27 | /* Mach Operating System |
28 | Copyright (c) 1993 Carnegie Mellon University | |
29 | All Rights Reserved. | |
30 | ||
31 | Permission to use, copy, modify and distribute this software and its | |
32 | documentation is hereby granted, provided that both the copyright | |
33 | notice and this permission notice appear in all copies of the | |
34 | software, derivative works or modified versions, and any portions | |
35 | thereof, and that both notices appear in supporting documentation. | |
36 | ||
37 | CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS | |
38 | CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR | |
39 | ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
40 | ||
41 | Carnegie Mellon requests users of this software to return to | |
42 | ||
43 | Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
44 | School of Computer Science | |
45 | Carnegie Mellon University | |
46 | Pittsburgh PA 15213-3890 | |
47 | ||
48 | any improvements or extensions that they make and grant Carnegie the | |
49 | rights to redistribute these changes. */ | |
252b5132 RH |
50 | |
51 | #include "as.h" | |
52 | #include "subsegs.h" | |
43b4c25e | 53 | #include "struc-symbol.h" |
252b5132 RH |
54 | #include "ecoff.h" |
55 | ||
56 | #include "opcode/alpha.h" | |
57 | ||
58 | #ifdef OBJ_ELF | |
59 | #include "elf/alpha.h" | |
4dc7ead9 | 60 | #include "dwarf2dbg.h" |
252b5132 RH |
61 | #endif |
62 | ||
ea1562b3 | 63 | #include "dw2gencfi.h" |
3882b010 | 64 | #include "safe-ctype.h" |
252b5132 | 65 | \f |
11f45fb5 | 66 | /* Local types. */ |
252b5132 | 67 | |
ea1562b3 NC |
68 | #define TOKENIZE_ERROR -1 |
69 | #define TOKENIZE_ERROR_REPORT -2 | |
70 | #define MAX_INSN_FIXUPS 2 | |
71 | #define MAX_INSN_ARGS 5 | |
252b5132 | 72 | |
11f45fb5 NC |
73 | struct alpha_fixup |
74 | { | |
252b5132 RH |
75 | expressionS exp; |
76 | bfd_reloc_code_real_type reloc; | |
77 | }; | |
78 | ||
11f45fb5 NC |
79 | struct alpha_insn |
80 | { | |
252b5132 RH |
81 | unsigned insn; |
82 | int nfixups; | |
83 | struct alpha_fixup fixups[MAX_INSN_FIXUPS]; | |
19f78583 | 84 | long sequence; |
252b5132 RH |
85 | }; |
86 | ||
11f45fb5 NC |
87 | enum alpha_macro_arg |
88 | { | |
89 | MACRO_EOA = 1, | |
90 | MACRO_IR, | |
91 | MACRO_PIR, | |
92 | MACRO_OPIR, | |
93 | MACRO_CPIR, | |
94 | MACRO_FPR, | |
95 | MACRO_EXP, | |
96 | }; | |
252b5132 | 97 | |
11f45fb5 NC |
98 | struct alpha_macro |
99 | { | |
252b5132 | 100 | const char *name; |
ea1562b3 NC |
101 | void (*emit) (const expressionS *, int, const void *); |
102 | const void * arg; | |
252b5132 RH |
103 | enum alpha_macro_arg argsets[16]; |
104 | }; | |
105 | ||
1dab94dd | 106 | /* Extra expression types. */ |
252b5132 | 107 | |
ea1562b3 NC |
108 | #define O_pregister O_md1 /* O_register, in parentheses. */ |
109 | #define O_cpregister O_md2 /* + a leading comma. */ | |
252b5132 | 110 | |
3765b1be | 111 | /* The alpha_reloc_op table below depends on the ordering of these. */ |
04fe8f58 RH |
112 | #define O_literal O_md3 /* !literal relocation. */ |
113 | #define O_lituse_addr O_md4 /* !lituse_addr relocation. */ | |
114 | #define O_lituse_base O_md5 /* !lituse_base relocation. */ | |
115 | #define O_lituse_bytoff O_md6 /* !lituse_bytoff relocation. */ | |
116 | #define O_lituse_jsr O_md7 /* !lituse_jsr relocation. */ | |
117 | #define O_lituse_tlsgd O_md8 /* !lituse_tlsgd relocation. */ | |
118 | #define O_lituse_tlsldm O_md9 /* !lituse_tlsldm relocation. */ | |
119 | #define O_lituse_jsrdirect O_md10 /* !lituse_jsrdirect relocation. */ | |
120 | #define O_gpdisp O_md11 /* !gpdisp relocation. */ | |
121 | #define O_gprelhigh O_md12 /* !gprelhigh relocation. */ | |
122 | #define O_gprellow O_md13 /* !gprellow relocation. */ | |
123 | #define O_gprel O_md14 /* !gprel relocation. */ | |
124 | #define O_samegp O_md15 /* !samegp relocation. */ | |
125 | #define O_tlsgd O_md16 /* !tlsgd relocation. */ | |
126 | #define O_tlsldm O_md17 /* !tlsldm relocation. */ | |
127 | #define O_gotdtprel O_md18 /* !gotdtprel relocation. */ | |
128 | #define O_dtprelhi O_md19 /* !dtprelhi relocation. */ | |
129 | #define O_dtprello O_md20 /* !dtprello relocation. */ | |
130 | #define O_dtprel O_md21 /* !dtprel relocation. */ | |
131 | #define O_gottprel O_md22 /* !gottprel relocation. */ | |
132 | #define O_tprelhi O_md23 /* !tprelhi relocation. */ | |
133 | #define O_tprello O_md24 /* !tprello relocation. */ | |
134 | #define O_tprel O_md25 /* !tprel relocation. */ | |
19f78583 RH |
135 | |
136 | #define DUMMY_RELOC_LITUSE_ADDR (BFD_RELOC_UNUSED + 1) | |
137 | #define DUMMY_RELOC_LITUSE_BASE (BFD_RELOC_UNUSED + 2) | |
138 | #define DUMMY_RELOC_LITUSE_BYTOFF (BFD_RELOC_UNUSED + 3) | |
139 | #define DUMMY_RELOC_LITUSE_JSR (BFD_RELOC_UNUSED + 4) | |
3765b1be RH |
140 | #define DUMMY_RELOC_LITUSE_TLSGD (BFD_RELOC_UNUSED + 5) |
141 | #define DUMMY_RELOC_LITUSE_TLSLDM (BFD_RELOC_UNUSED + 6) | |
04fe8f58 | 142 | #define DUMMY_RELOC_LITUSE_JSRDIRECT (BFD_RELOC_UNUSED + 7) |
19f78583 | 143 | |
3765b1be | 144 | #define USER_RELOC_P(R) ((R) >= O_literal && (R) <= O_tprel) |
43b4c25e | 145 | |
11f45fb5 | 146 | /* Macros for extracting the type and number of encoded register tokens. */ |
252b5132 RH |
147 | |
148 | #define is_ir_num(x) (((x) & 32) == 0) | |
149 | #define is_fpr_num(x) (((x) & 32) != 0) | |
150 | #define regno(x) ((x) & 31) | |
151 | ||
11f45fb5 | 152 | /* Something odd inherited from the old assembler. */ |
252b5132 RH |
153 | |
154 | #define note_gpreg(R) (alpha_gprmask |= (1 << (R))) | |
155 | #define note_fpreg(R) (alpha_fprmask |= (1 << (R))) | |
156 | ||
157 | /* Predicates for 16- and 32-bit ranges */ | |
158 | /* XXX: The non-shift version appears to trigger a compiler bug when | |
159 | cross-assembling from x86 w/ gcc 2.7.2. */ | |
160 | ||
161 | #if 1 | |
162 | #define range_signed_16(x) \ | |
bc805888 | 163 | (((offsetT) (x) >> 15) == 0 || ((offsetT) (x) >> 15) == -1) |
252b5132 | 164 | #define range_signed_32(x) \ |
bc805888 | 165 | (((offsetT) (x) >> 31) == 0 || ((offsetT) (x) >> 31) == -1) |
252b5132 | 166 | #else |
32ff5c2e KH |
167 | #define range_signed_16(x) ((offsetT) (x) >= -(offsetT) 0x8000 && \ |
168 | (offsetT) (x) <= (offsetT) 0x7FFF) | |
169 | #define range_signed_32(x) ((offsetT) (x) >= -(offsetT) 0x80000000 && \ | |
170 | (offsetT) (x) <= (offsetT) 0x7FFFFFFF) | |
252b5132 RH |
171 | #endif |
172 | ||
173 | /* Macros for sign extending from 16- and 32-bits. */ | |
174 | /* XXX: The cast macros will work on all the systems that I care about, | |
175 | but really a predicate should be found to use the non-cast forms. */ | |
176 | ||
177 | #if 1 | |
bc805888 KH |
178 | #define sign_extend_16(x) ((short) (x)) |
179 | #define sign_extend_32(x) ((int) (x)) | |
252b5132 | 180 | #else |
bc805888 KH |
181 | #define sign_extend_16(x) ((offsetT) (((x) & 0xFFFF) ^ 0x8000) - 0x8000) |
182 | #define sign_extend_32(x) ((offsetT) (((x) & 0xFFFFFFFF) \ | |
252b5132 RH |
183 | ^ 0x80000000) - 0x80000000) |
184 | #endif | |
185 | ||
11f45fb5 | 186 | /* Macros to build tokens. */ |
252b5132 | 187 | |
32ff5c2e | 188 | #define set_tok_reg(t, r) (memset (&(t), 0, sizeof (t)), \ |
252b5132 RH |
189 | (t).X_op = O_register, \ |
190 | (t).X_add_number = (r)) | |
32ff5c2e | 191 | #define set_tok_preg(t, r) (memset (&(t), 0, sizeof (t)), \ |
252b5132 RH |
192 | (t).X_op = O_pregister, \ |
193 | (t).X_add_number = (r)) | |
32ff5c2e | 194 | #define set_tok_cpreg(t, r) (memset (&(t), 0, sizeof (t)), \ |
252b5132 RH |
195 | (t).X_op = O_cpregister, \ |
196 | (t).X_add_number = (r)) | |
32ff5c2e | 197 | #define set_tok_freg(t, r) (memset (&(t), 0, sizeof (t)), \ |
252b5132 | 198 | (t).X_op = O_register, \ |
66498417 | 199 | (t).X_add_number = (r) + 32) |
32ff5c2e | 200 | #define set_tok_sym(t, s, a) (memset (&(t), 0, sizeof (t)), \ |
252b5132 RH |
201 | (t).X_op = O_symbol, \ |
202 | (t).X_add_symbol = (s), \ | |
203 | (t).X_add_number = (a)) | |
32ff5c2e | 204 | #define set_tok_const(t, n) (memset (&(t), 0, sizeof (t)), \ |
252b5132 RH |
205 | (t).X_op = O_constant, \ |
206 | (t).X_add_number = (n)) | |
252b5132 | 207 | \f |
252b5132 RH |
208 | /* Generic assembler global variables which must be defined by all |
209 | targets. */ | |
210 | ||
211 | /* Characters which always start a comment. */ | |
212 | const char comment_chars[] = "#"; | |
213 | ||
214 | /* Characters which start a comment at the beginning of a line. */ | |
215 | const char line_comment_chars[] = "#"; | |
216 | ||
217 | /* Characters which may be used to separate multiple commands on a | |
218 | single line. */ | |
219 | const char line_separator_chars[] = ";"; | |
220 | ||
221 | /* Characters which are used to indicate an exponent in a floating | |
222 | point number. */ | |
223 | const char EXP_CHARS[] = "eE"; | |
224 | ||
225 | /* Characters which mean that a number is a floating point constant, | |
226 | as in 0d1.0. */ | |
252b5132 RH |
227 | /* XXX: Do all of these really get used on the alpha?? */ |
228 | char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
252b5132 RH |
229 | |
230 | #ifdef OBJ_EVAX | |
231 | const char *md_shortopts = "Fm:g+1h:HG:"; | |
232 | #else | |
233 | const char *md_shortopts = "Fm:gG:"; | |
234 | #endif | |
235 | ||
11f45fb5 NC |
236 | struct option md_longopts[] = |
237 | { | |
252b5132 | 238 | #define OPTION_32ADDR (OPTION_MD_BASE) |
11f45fb5 | 239 | { "32addr", no_argument, NULL, OPTION_32ADDR }, |
66498417 | 240 | #define OPTION_RELAX (OPTION_32ADDR + 1) |
11f45fb5 | 241 | { "relax", no_argument, NULL, OPTION_RELAX }, |
252b5132 | 242 | #ifdef OBJ_ELF |
66498417 KH |
243 | #define OPTION_MDEBUG (OPTION_RELAX + 1) |
244 | #define OPTION_NO_MDEBUG (OPTION_MDEBUG + 1) | |
11f45fb5 NC |
245 | { "mdebug", no_argument, NULL, OPTION_MDEBUG }, |
246 | { "no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG }, | |
252b5132 | 247 | #endif |
11f45fb5 NC |
248 | { NULL, no_argument, NULL, 0 } |
249 | }; | |
252b5132 | 250 | |
bc805888 | 251 | size_t md_longopts_size = sizeof (md_longopts); |
252b5132 RH |
252 | \f |
253 | #ifdef OBJ_EVAX | |
254 | #define AXP_REG_R0 0 | |
255 | #define AXP_REG_R16 16 | |
256 | #define AXP_REG_R17 17 | |
257 | #undef AXP_REG_T9 | |
258 | #define AXP_REG_T9 22 | |
259 | #undef AXP_REG_T10 | |
260 | #define AXP_REG_T10 23 | |
261 | #undef AXP_REG_T11 | |
262 | #define AXP_REG_T11 24 | |
263 | #undef AXP_REG_T12 | |
264 | #define AXP_REG_T12 25 | |
265 | #define AXP_REG_AI 25 | |
266 | #undef AXP_REG_FP | |
267 | #define AXP_REG_FP 29 | |
268 | ||
269 | #undef AXP_REG_GP | |
270 | #define AXP_REG_GP AXP_REG_PV | |
271 | #endif /* OBJ_EVAX */ | |
272 | ||
11f45fb5 | 273 | /* The cpu for which we are generating code. */ |
252b5132 RH |
274 | static unsigned alpha_target = AXP_OPCODE_BASE; |
275 | static const char *alpha_target_name = "<all>"; | |
276 | ||
11f45fb5 | 277 | /* The hash table of instruction opcodes. */ |
252b5132 RH |
278 | static struct hash_control *alpha_opcode_hash; |
279 | ||
11f45fb5 | 280 | /* The hash table of macro opcodes. */ |
252b5132 RH |
281 | static struct hash_control *alpha_macro_hash; |
282 | ||
283 | #ifdef OBJ_ECOFF | |
11f45fb5 | 284 | /* The $gp relocation symbol. */ |
252b5132 RH |
285 | static symbolS *alpha_gp_symbol; |
286 | ||
287 | /* XXX: what is this, and why is it exported? */ | |
288 | valueT alpha_gp_value; | |
289 | #endif | |
290 | ||
11f45fb5 | 291 | /* The current $gp register. */ |
252b5132 RH |
292 | static int alpha_gp_register = AXP_REG_GP; |
293 | ||
11f45fb5 | 294 | /* A table of the register symbols. */ |
252b5132 RH |
295 | static symbolS *alpha_register_table[64]; |
296 | ||
11f45fb5 | 297 | /* Constant sections, or sections of constants. */ |
252b5132 RH |
298 | #ifdef OBJ_ECOFF |
299 | static segT alpha_lita_section; | |
252b5132 RH |
300 | #endif |
301 | #ifdef OBJ_EVAX | |
302 | static segT alpha_link_section; | |
303 | static segT alpha_ctors_section; | |
304 | static segT alpha_dtors_section; | |
305 | #endif | |
306 | static segT alpha_lit8_section; | |
307 | ||
1dab94dd | 308 | /* Symbols referring to said sections. */ |
252b5132 RH |
309 | #ifdef OBJ_ECOFF |
310 | static symbolS *alpha_lita_symbol; | |
252b5132 RH |
311 | #endif |
312 | #ifdef OBJ_EVAX | |
313 | static symbolS *alpha_link_symbol; | |
314 | static symbolS *alpha_ctors_symbol; | |
315 | static symbolS *alpha_dtors_symbol; | |
316 | #endif | |
317 | static symbolS *alpha_lit8_symbol; | |
318 | ||
11f45fb5 | 319 | /* Literal for .litX+0x8000 within .lita. */ |
252b5132 | 320 | #ifdef OBJ_ECOFF |
252b5132 RH |
321 | static offsetT alpha_lit8_literal; |
322 | #endif | |
323 | ||
11f45fb5 | 324 | /* Is the assembler not allowed to use $at? */ |
252b5132 RH |
325 | static int alpha_noat_on = 0; |
326 | ||
11f45fb5 | 327 | /* Are macros enabled? */ |
252b5132 RH |
328 | static int alpha_macros_on = 1; |
329 | ||
11f45fb5 | 330 | /* Are floats disabled? */ |
252b5132 RH |
331 | static int alpha_nofloats_on = 0; |
332 | ||
11f45fb5 | 333 | /* Are addresses 32 bit? */ |
252b5132 RH |
334 | static int alpha_addr32_on = 0; |
335 | ||
336 | /* Symbol labelling the current insn. When the Alpha gas sees | |
337 | foo: | |
338 | .quad 0 | |
339 | and the section happens to not be on an eight byte boundary, it | |
340 | will align both the symbol and the .quad to an eight byte boundary. */ | |
341 | static symbolS *alpha_insn_label; | |
342 | ||
343 | /* Whether we should automatically align data generation pseudo-ops. | |
344 | .align 0 will turn this off. */ | |
345 | static int alpha_auto_align_on = 1; | |
346 | ||
347 | /* The known current alignment of the current section. */ | |
348 | static int alpha_current_align; | |
349 | ||
350 | /* These are exported to ECOFF code. */ | |
351 | unsigned long alpha_gprmask, alpha_fprmask; | |
352 | ||
353 | /* Whether the debugging option was seen. */ | |
354 | static int alpha_debug; | |
355 | ||
356 | #ifdef OBJ_ELF | |
357 | /* Whether we are emitting an mdebug section. */ | |
a8316fe2 | 358 | int alpha_flag_mdebug = -1; |
252b5132 RH |
359 | #endif |
360 | ||
361 | /* Don't fully resolve relocations, allowing code movement in the linker. */ | |
362 | static int alpha_flag_relax; | |
363 | ||
364 | /* What value to give to bfd_set_gp_size. */ | |
365 | static int g_switch_value = 8; | |
366 | ||
367 | #ifdef OBJ_EVAX | |
368 | /* Collect information about current procedure here. */ | |
ea1562b3 NC |
369 | static struct |
370 | { | |
371 | symbolS *symbol; /* Proc pdesc symbol. */ | |
252b5132 | 372 | int pdsckind; |
ea1562b3 NC |
373 | int framereg; /* Register for frame pointer. */ |
374 | int framesize; /* Size of frame. */ | |
252b5132 RH |
375 | int rsa_offset; |
376 | int ra_save; | |
377 | int fp_save; | |
378 | long imask; | |
379 | long fmask; | |
380 | int type; | |
381 | int prologue; | |
382 | } alpha_evax_proc; | |
383 | ||
384 | static int alpha_flag_hash_long_names = 0; /* -+ */ | |
385 | static int alpha_flag_show_after_trunc = 0; /* -H */ | |
386 | ||
387 | /* If the -+ switch is given, then a hash is appended to any name that is | |
11f45fb5 | 388 | longer than 64 characters, else longer symbol names are truncated. */ |
252b5132 | 389 | |
43b4c25e MM |
390 | #endif |
391 | \f | |
392 | #ifdef RELOC_OP_P | |
393 | /* A table to map the spelling of a relocation operand into an appropriate | |
394 | bfd_reloc_code_real_type type. The table is assumed to be ordered such | |
395 | that op-O_literal indexes into it. */ | |
396 | ||
397 | #define ALPHA_RELOC_TABLE(op) \ | |
19f78583 | 398 | (&alpha_reloc_op[ ((!USER_RELOC_P (op)) \ |
43b4c25e | 399 | ? (abort (), 0) \ |
19f78583 | 400 | : (int) (op) - (int) O_literal) ]) |
43b4c25e | 401 | |
ec8fcf4a RH |
402 | #define DEF(NAME, RELOC, REQ, ALLOW) \ |
403 | { #NAME, sizeof(#NAME)-1, O_##NAME, RELOC, REQ, ALLOW} | |
43b4c25e | 404 | |
11f45fb5 NC |
405 | static const struct alpha_reloc_op_tag |
406 | { | |
ea1562b3 NC |
407 | const char *name; /* String to lookup. */ |
408 | size_t length; /* Size of the string. */ | |
409 | operatorT op; /* Which operator to use. */ | |
410 | bfd_reloc_code_real_type reloc; /* Relocation before frob. */ | |
411 | unsigned int require_seq : 1; /* Require a sequence number. */ | |
412 | unsigned int allow_seq : 1; /* Allow a sequence number. */ | |
11f45fb5 NC |
413 | } |
414 | alpha_reloc_op[] = | |
415 | { | |
ea1562b3 NC |
416 | DEF (literal, BFD_RELOC_ALPHA_ELF_LITERAL, 0, 1), |
417 | DEF (lituse_addr, DUMMY_RELOC_LITUSE_ADDR, 1, 1), | |
418 | DEF (lituse_base, DUMMY_RELOC_LITUSE_BASE, 1, 1), | |
419 | DEF (lituse_bytoff, DUMMY_RELOC_LITUSE_BYTOFF, 1, 1), | |
420 | DEF (lituse_jsr, DUMMY_RELOC_LITUSE_JSR, 1, 1), | |
421 | DEF (lituse_tlsgd, DUMMY_RELOC_LITUSE_TLSGD, 1, 1), | |
422 | DEF (lituse_tlsldm, DUMMY_RELOC_LITUSE_TLSLDM, 1, 1), | |
04fe8f58 | 423 | DEF (lituse_jsrdirect, DUMMY_RELOC_LITUSE_JSRDIRECT, 1, 1), |
ea1562b3 NC |
424 | DEF (gpdisp, BFD_RELOC_ALPHA_GPDISP, 1, 1), |
425 | DEF (gprelhigh, BFD_RELOC_ALPHA_GPREL_HI16, 0, 0), | |
426 | DEF (gprellow, BFD_RELOC_ALPHA_GPREL_LO16, 0, 0), | |
427 | DEF (gprel, BFD_RELOC_GPREL16, 0, 0), | |
428 | DEF (samegp, BFD_RELOC_ALPHA_BRSGP, 0, 0), | |
429 | DEF (tlsgd, BFD_RELOC_ALPHA_TLSGD, 0, 1), | |
430 | DEF (tlsldm, BFD_RELOC_ALPHA_TLSLDM, 0, 1), | |
431 | DEF (gotdtprel, BFD_RELOC_ALPHA_GOTDTPREL16, 0, 0), | |
432 | DEF (dtprelhi, BFD_RELOC_ALPHA_DTPREL_HI16, 0, 0), | |
433 | DEF (dtprello, BFD_RELOC_ALPHA_DTPREL_LO16, 0, 0), | |
434 | DEF (dtprel, BFD_RELOC_ALPHA_DTPREL16, 0, 0), | |
435 | DEF (gottprel, BFD_RELOC_ALPHA_GOTTPREL16, 0, 0), | |
436 | DEF (tprelhi, BFD_RELOC_ALPHA_TPREL_HI16, 0, 0), | |
437 | DEF (tprello, BFD_RELOC_ALPHA_TPREL_LO16, 0, 0), | |
438 | DEF (tprel, BFD_RELOC_ALPHA_TPREL16, 0, 0), | |
43b4c25e MM |
439 | }; |
440 | ||
19f78583 RH |
441 | #undef DEF |
442 | ||
43b4c25e | 443 | static const int alpha_num_reloc_op |
bc805888 | 444 | = sizeof (alpha_reloc_op) / sizeof (*alpha_reloc_op); |
19f78583 | 445 | #endif /* RELOC_OP_P */ |
43b4c25e | 446 | |
ea1562b3 | 447 | /* Maximum # digits needed to hold the largest sequence #. */ |
43b4c25e MM |
448 | #define ALPHA_RELOC_DIGITS 25 |
449 | ||
2d2255b5 | 450 | /* Structure to hold explicit sequence information. */ |
19f78583 | 451 | struct alpha_reloc_tag |
43b4c25e | 452 | { |
ea1562b3 NC |
453 | fixS *master; /* The literal reloc. */ |
454 | fixS *slaves; /* Head of linked list of lituses. */ | |
455 | segT segment; /* Segment relocs are in or undefined_section. */ | |
456 | long sequence; /* Sequence #. */ | |
457 | unsigned n_master; /* # of literals. */ | |
458 | unsigned n_slaves; /* # of lituses. */ | |
459 | unsigned saw_tlsgd : 1; /* True if ... */ | |
3765b1be RH |
460 | unsigned saw_tlsldm : 1; |
461 | unsigned saw_lu_tlsgd : 1; | |
462 | unsigned saw_lu_tlsldm : 1; | |
ea1562b3 NC |
463 | unsigned multi_section_p : 1; /* True if more than one section was used. */ |
464 | char string[1]; /* Printable form of sequence to hash with. */ | |
43b4c25e MM |
465 | }; |
466 | ||
ea1562b3 | 467 | /* Hash table to link up literals with the appropriate lituse. */ |
43b4c25e | 468 | static struct hash_control *alpha_literal_hash; |
19f78583 RH |
469 | |
470 | /* Sequence numbers for internal use by macros. */ | |
471 | static long next_sequence_num = -1; | |
252b5132 RH |
472 | \f |
473 | /* A table of CPU names and opcode sets. */ | |
474 | ||
11f45fb5 NC |
475 | static const struct cpu_type |
476 | { | |
252b5132 RH |
477 | const char *name; |
478 | unsigned flags; | |
11f45fb5 NC |
479 | } |
480 | cpu_types[] = | |
481 | { | |
252b5132 | 482 | /* Ad hoc convention: cpu number gets palcode, process code doesn't. |
1dab94dd | 483 | This supports usage under DU 4.0b that does ".arch ev4", and |
252b5132 RH |
484 | usage in MILO that does -m21064. Probably something more |
485 | specific like -m21064-pal should be used, but oh well. */ | |
486 | ||
487 | { "21064", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
488 | { "21064a", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
489 | { "21066", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
490 | { "21068", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
491 | { "21164", AXP_OPCODE_BASE|AXP_OPCODE_EV5 }, | |
492 | { "21164a", AXP_OPCODE_BASE|AXP_OPCODE_EV5|AXP_OPCODE_BWX }, | |
493 | { "21164pc", (AXP_OPCODE_BASE|AXP_OPCODE_EV5|AXP_OPCODE_BWX | |
494 | |AXP_OPCODE_MAX) }, | |
495 | { "21264", (AXP_OPCODE_BASE|AXP_OPCODE_EV6|AXP_OPCODE_BWX | |
496 | |AXP_OPCODE_MAX|AXP_OPCODE_CIX) }, | |
dbac4f5b RH |
497 | { "21264a", (AXP_OPCODE_BASE|AXP_OPCODE_EV6|AXP_OPCODE_BWX |
498 | |AXP_OPCODE_MAX|AXP_OPCODE_CIX) }, | |
499 | { "21264b", (AXP_OPCODE_BASE|AXP_OPCODE_EV6|AXP_OPCODE_BWX | |
500 | |AXP_OPCODE_MAX|AXP_OPCODE_CIX) }, | |
252b5132 RH |
501 | |
502 | { "ev4", AXP_OPCODE_BASE }, | |
503 | { "ev45", AXP_OPCODE_BASE }, | |
504 | { "lca45", AXP_OPCODE_BASE }, | |
505 | { "ev5", AXP_OPCODE_BASE }, | |
506 | { "ev56", AXP_OPCODE_BASE|AXP_OPCODE_BWX }, | |
507 | { "pca56", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX }, | |
508 | { "ev6", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX|AXP_OPCODE_CIX }, | |
dbac4f5b RH |
509 | { "ev67", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX|AXP_OPCODE_CIX }, |
510 | { "ev68", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX|AXP_OPCODE_CIX }, | |
252b5132 RH |
511 | |
512 | { "all", AXP_OPCODE_BASE }, | |
446a06c9 | 513 | { 0, 0 } |
252b5132 RH |
514 | }; |
515 | ||
ea1562b3 NC |
516 | /* Some instruction sets indexed by lg(size). */ |
517 | static const char * const sextX_op[] = { "sextb", "sextw", "sextl", NULL }; | |
518 | static const char * const insXl_op[] = { "insbl", "inswl", "insll", "insql" }; | |
519 | static const char * const insXh_op[] = { NULL, "inswh", "inslh", "insqh" }; | |
520 | static const char * const extXl_op[] = { "extbl", "extwl", "extll", "extql" }; | |
521 | static const char * const extXh_op[] = { NULL, "extwh", "extlh", "extqh" }; | |
522 | static const char * const mskXl_op[] = { "mskbl", "mskwl", "mskll", "mskql" }; | |
523 | static const char * const mskXh_op[] = { NULL, "mskwh", "msklh", "mskqh" }; | |
524 | static const char * const stX_op[] = { "stb", "stw", "stl", "stq" }; | |
525 | static const char * const ldXu_op[] = { "ldbu", "ldwu", NULL, NULL }; | |
252b5132 | 526 | |
ea1562b3 NC |
527 | static void assemble_insn (const struct alpha_opcode *, const expressionS *, int, struct alpha_insn *, bfd_reloc_code_real_type); |
528 | static void emit_insn (struct alpha_insn *); | |
529 | static void assemble_tokens (const char *, const expressionS *, int, int); | |
530 | \f | |
531 | static struct alpha_reloc_tag * | |
532 | get_alpha_reloc_tag (long sequence) | |
11f45fb5 | 533 | { |
ea1562b3 NC |
534 | char buffer[ALPHA_RELOC_DIGITS]; |
535 | struct alpha_reloc_tag *info; | |
252b5132 | 536 | |
ea1562b3 | 537 | sprintf (buffer, "!%ld", sequence); |
252b5132 | 538 | |
ea1562b3 NC |
539 | info = (struct alpha_reloc_tag *) hash_find (alpha_literal_hash, buffer); |
540 | if (! info) | |
541 | { | |
542 | size_t len = strlen (buffer); | |
543 | const char *errmsg; | |
252b5132 | 544 | |
ea1562b3 | 545 | info = xcalloc (sizeof (struct alpha_reloc_tag) + len, 1); |
252b5132 | 546 | |
ea1562b3 NC |
547 | info->segment = now_seg; |
548 | info->sequence = sequence; | |
549 | strcpy (info->string, buffer); | |
550 | errmsg = hash_insert (alpha_literal_hash, info->string, (void *) info); | |
551 | if (errmsg) | |
552 | as_fatal (errmsg); | |
553 | } | |
252b5132 | 554 | |
ea1562b3 NC |
555 | return info; |
556 | } | |
252b5132 | 557 | |
ea1562b3 NC |
558 | static void |
559 | alpha_adjust_relocs (bfd *abfd ATTRIBUTE_UNUSED, | |
560 | asection *sec, | |
561 | void * ptr ATTRIBUTE_UNUSED) | |
562 | { | |
563 | segment_info_type *seginfo = seg_info (sec); | |
564 | fixS **prevP; | |
565 | fixS *fixp; | |
566 | fixS *next; | |
567 | fixS *slave; | |
252b5132 | 568 | |
ea1562b3 NC |
569 | /* If seginfo is NULL, we did not create this section; don't do |
570 | anything with it. By using a pointer to a pointer, we can update | |
571 | the links in place. */ | |
572 | if (seginfo == NULL) | |
573 | return; | |
252b5132 | 574 | |
ea1562b3 NC |
575 | /* If there are no relocations, skip the section. */ |
576 | if (! seginfo->fix_root) | |
577 | return; | |
252b5132 | 578 | |
ea1562b3 NC |
579 | /* First rebuild the fixup chain without the explicit lituse and |
580 | gpdisp_lo16 relocs. */ | |
581 | prevP = &seginfo->fix_root; | |
582 | for (fixp = seginfo->fix_root; fixp; fixp = next) | |
583 | { | |
584 | next = fixp->fx_next; | |
585 | fixp->fx_next = (fixS *) 0; | |
252b5132 | 586 | |
ea1562b3 NC |
587 | switch (fixp->fx_r_type) |
588 | { | |
589 | case BFD_RELOC_ALPHA_LITUSE: | |
590 | if (fixp->tc_fix_data.info->n_master == 0) | |
591 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
592 | _("No !literal!%ld was found"), | |
593 | fixp->tc_fix_data.info->sequence); | |
594 | #ifdef RELOC_OP_P | |
595 | if (fixp->fx_offset == LITUSE_ALPHA_TLSGD) | |
596 | { | |
597 | if (! fixp->tc_fix_data.info->saw_tlsgd) | |
598 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
599 | _("No !tlsgd!%ld was found"), | |
600 | fixp->tc_fix_data.info->sequence); | |
601 | } | |
602 | else if (fixp->fx_offset == LITUSE_ALPHA_TLSLDM) | |
603 | { | |
604 | if (! fixp->tc_fix_data.info->saw_tlsldm) | |
605 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
606 | _("No !tlsldm!%ld was found"), | |
607 | fixp->tc_fix_data.info->sequence); | |
608 | } | |
609 | #endif | |
610 | break; | |
252b5132 | 611 | |
ea1562b3 NC |
612 | case BFD_RELOC_ALPHA_GPDISP_LO16: |
613 | if (fixp->tc_fix_data.info->n_master == 0) | |
614 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
615 | _("No ldah !gpdisp!%ld was found"), | |
616 | fixp->tc_fix_data.info->sequence); | |
617 | break; | |
252b5132 | 618 | |
ea1562b3 NC |
619 | case BFD_RELOC_ALPHA_ELF_LITERAL: |
620 | if (fixp->tc_fix_data.info | |
621 | && (fixp->tc_fix_data.info->saw_tlsgd | |
622 | || fixp->tc_fix_data.info->saw_tlsldm)) | |
623 | break; | |
624 | /* FALLTHRU */ | |
252b5132 | 625 | |
ea1562b3 NC |
626 | default: |
627 | *prevP = fixp; | |
628 | prevP = &fixp->fx_next; | |
629 | break; | |
252b5132 | 630 | } |
252b5132 RH |
631 | } |
632 | ||
ea1562b3 NC |
633 | /* Go back and re-chain dependent relocations. They are currently |
634 | linked through the next_reloc field in reverse order, so as we | |
635 | go through the next_reloc chain, we effectively reverse the chain | |
636 | once again. | |
252b5132 | 637 | |
ea1562b3 NC |
638 | Except if there is more than one !literal for a given sequence |
639 | number. In that case, the programmer and/or compiler is not sure | |
640 | how control flows from literal to lituse, and we can't be sure to | |
641 | get the relaxation correct. | |
252b5132 | 642 | |
ea1562b3 NC |
643 | ??? Well, actually we could, if there are enough lituses such that |
644 | we can make each literal have at least one of each lituse type | |
645 | present. Not implemented. | |
252b5132 | 646 | |
ea1562b3 NC |
647 | Also suppress the optimization if the !literals/!lituses are spread |
648 | in different segments. This can happen with "intersting" uses of | |
649 | inline assembly; examples are present in the Linux kernel semaphores. */ | |
11f45fb5 | 650 | |
ea1562b3 | 651 | for (fixp = seginfo->fix_root; fixp; fixp = next) |
252b5132 | 652 | { |
ea1562b3 NC |
653 | next = fixp->fx_next; |
654 | switch (fixp->fx_r_type) | |
655 | { | |
656 | case BFD_RELOC_ALPHA_TLSGD: | |
657 | case BFD_RELOC_ALPHA_TLSLDM: | |
658 | if (!fixp->tc_fix_data.info) | |
659 | break; | |
660 | if (fixp->tc_fix_data.info->n_master == 0) | |
661 | break; | |
662 | else if (fixp->tc_fix_data.info->n_master > 1) | |
663 | { | |
664 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
665 | _("too many !literal!%ld for %s"), | |
666 | fixp->tc_fix_data.info->sequence, | |
667 | (fixp->fx_r_type == BFD_RELOC_ALPHA_TLSGD | |
668 | ? "!tlsgd" : "!tlsldm")); | |
669 | break; | |
670 | } | |
252b5132 | 671 | |
ea1562b3 NC |
672 | fixp->tc_fix_data.info->master->fx_next = fixp->fx_next; |
673 | fixp->fx_next = fixp->tc_fix_data.info->master; | |
674 | fixp = fixp->fx_next; | |
675 | /* Fall through. */ | |
252b5132 | 676 | |
ea1562b3 NC |
677 | case BFD_RELOC_ALPHA_ELF_LITERAL: |
678 | if (fixp->tc_fix_data.info | |
679 | && fixp->tc_fix_data.info->n_master == 1 | |
680 | && ! fixp->tc_fix_data.info->multi_section_p) | |
681 | { | |
682 | for (slave = fixp->tc_fix_data.info->slaves; | |
683 | slave != (fixS *) 0; | |
684 | slave = slave->tc_fix_data.next_reloc) | |
685 | { | |
686 | slave->fx_next = fixp->fx_next; | |
687 | fixp->fx_next = slave; | |
688 | } | |
689 | } | |
690 | break; | |
252b5132 | 691 | |
ea1562b3 NC |
692 | case BFD_RELOC_ALPHA_GPDISP_HI16: |
693 | if (fixp->tc_fix_data.info->n_slaves == 0) | |
694 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
695 | _("No lda !gpdisp!%ld was found"), | |
696 | fixp->tc_fix_data.info->sequence); | |
697 | else | |
698 | { | |
699 | slave = fixp->tc_fix_data.info->slaves; | |
700 | slave->fx_next = next; | |
701 | fixp->fx_next = slave; | |
702 | } | |
703 | break; | |
252b5132 | 704 | |
ea1562b3 NC |
705 | default: |
706 | break; | |
707 | } | |
252b5132 | 708 | } |
252b5132 RH |
709 | } |
710 | ||
ea1562b3 NC |
711 | /* Before the relocations are written, reorder them, so that user |
712 | supplied !lituse relocations follow the appropriate !literal | |
713 | relocations, and similarly for !gpdisp relocations. */ | |
252b5132 RH |
714 | |
715 | void | |
ea1562b3 | 716 | alpha_before_fix (void) |
252b5132 | 717 | { |
ea1562b3 NC |
718 | if (alpha_literal_hash) |
719 | bfd_map_over_sections (stdoutput, alpha_adjust_relocs, NULL); | |
252b5132 | 720 | } |
ea1562b3 NC |
721 | \f |
722 | #ifdef DEBUG_ALPHA | |
723 | static void | |
724 | debug_exp (expressionS tok[], int ntok) | |
252b5132 | 725 | { |
ea1562b3 | 726 | int i; |
252b5132 | 727 | |
ea1562b3 NC |
728 | fprintf (stderr, "debug_exp: %d tokens", ntok); |
729 | for (i = 0; i < ntok; i++) | |
252b5132 | 730 | { |
ea1562b3 NC |
731 | expressionS *t = &tok[i]; |
732 | const char *name; | |
252b5132 | 733 | |
ea1562b3 NC |
734 | switch (t->X_op) |
735 | { | |
736 | default: name = "unknown"; break; | |
737 | case O_illegal: name = "O_illegal"; break; | |
738 | case O_absent: name = "O_absent"; break; | |
739 | case O_constant: name = "O_constant"; break; | |
740 | case O_symbol: name = "O_symbol"; break; | |
741 | case O_symbol_rva: name = "O_symbol_rva"; break; | |
742 | case O_register: name = "O_register"; break; | |
743 | case O_big: name = "O_big"; break; | |
744 | case O_uminus: name = "O_uminus"; break; | |
745 | case O_bit_not: name = "O_bit_not"; break; | |
746 | case O_logical_not: name = "O_logical_not"; break; | |
747 | case O_multiply: name = "O_multiply"; break; | |
748 | case O_divide: name = "O_divide"; break; | |
749 | case O_modulus: name = "O_modulus"; break; | |
750 | case O_left_shift: name = "O_left_shift"; break; | |
751 | case O_right_shift: name = "O_right_shift"; break; | |
752 | case O_bit_inclusive_or: name = "O_bit_inclusive_or"; break; | |
753 | case O_bit_or_not: name = "O_bit_or_not"; break; | |
754 | case O_bit_exclusive_or: name = "O_bit_exclusive_or"; break; | |
755 | case O_bit_and: name = "O_bit_and"; break; | |
756 | case O_add: name = "O_add"; break; | |
757 | case O_subtract: name = "O_subtract"; break; | |
758 | case O_eq: name = "O_eq"; break; | |
759 | case O_ne: name = "O_ne"; break; | |
760 | case O_lt: name = "O_lt"; break; | |
761 | case O_le: name = "O_le"; break; | |
762 | case O_ge: name = "O_ge"; break; | |
763 | case O_gt: name = "O_gt"; break; | |
764 | case O_logical_and: name = "O_logical_and"; break; | |
765 | case O_logical_or: name = "O_logical_or"; break; | |
766 | case O_index: name = "O_index"; break; | |
767 | case O_pregister: name = "O_pregister"; break; | |
768 | case O_cpregister: name = "O_cpregister"; break; | |
769 | case O_literal: name = "O_literal"; break; | |
770 | case O_lituse_addr: name = "O_lituse_addr"; break; | |
771 | case O_lituse_base: name = "O_lituse_base"; break; | |
772 | case O_lituse_bytoff: name = "O_lituse_bytoff"; break; | |
773 | case O_lituse_jsr: name = "O_lituse_jsr"; break; | |
774 | case O_lituse_tlsgd: name = "O_lituse_tlsgd"; break; | |
775 | case O_lituse_tlsldm: name = "O_lituse_tlsldm"; break; | |
04fe8f58 | 776 | case O_lituse_jsrdirect: name = "O_lituse_jsrdirect"; break; |
ea1562b3 NC |
777 | case O_gpdisp: name = "O_gpdisp"; break; |
778 | case O_gprelhigh: name = "O_gprelhigh"; break; | |
779 | case O_gprellow: name = "O_gprellow"; break; | |
780 | case O_gprel: name = "O_gprel"; break; | |
781 | case O_samegp: name = "O_samegp"; break; | |
782 | case O_tlsgd: name = "O_tlsgd"; break; | |
783 | case O_tlsldm: name = "O_tlsldm"; break; | |
784 | case O_gotdtprel: name = "O_gotdtprel"; break; | |
785 | case O_dtprelhi: name = "O_dtprelhi"; break; | |
786 | case O_dtprello: name = "O_dtprello"; break; | |
787 | case O_dtprel: name = "O_dtprel"; break; | |
788 | case O_gottprel: name = "O_gottprel"; break; | |
789 | case O_tprelhi: name = "O_tprelhi"; break; | |
790 | case O_tprello: name = "O_tprello"; break; | |
791 | case O_tprel: name = "O_tprel"; break; | |
792 | } | |
252b5132 | 793 | |
ea1562b3 NC |
794 | fprintf (stderr, ", %s(%s, %s, %d)", name, |
795 | (t->X_add_symbol) ? S_GET_NAME (t->X_add_symbol) : "--", | |
796 | (t->X_op_symbol) ? S_GET_NAME (t->X_op_symbol) : "--", | |
797 | (int) t->X_add_number); | |
252b5132 | 798 | } |
ea1562b3 NC |
799 | fprintf (stderr, "\n"); |
800 | fflush (stderr); | |
252b5132 | 801 | } |
ea1562b3 | 802 | #endif |
252b5132 | 803 | |
ea1562b3 | 804 | /* Parse the arguments to an opcode. */ |
252b5132 | 805 | |
ea1562b3 NC |
806 | static int |
807 | tokenize_arguments (char *str, | |
808 | expressionS tok[], | |
809 | int ntok) | |
252b5132 | 810 | { |
ea1562b3 NC |
811 | expressionS *end_tok = tok + ntok; |
812 | char *old_input_line_pointer; | |
813 | int saw_comma = 0, saw_arg = 0; | |
814 | #ifdef DEBUG_ALPHA | |
815 | expressionS *orig_tok = tok; | |
816 | #endif | |
817 | #ifdef RELOC_OP_P | |
818 | char *p; | |
819 | const struct alpha_reloc_op_tag *r; | |
820 | int c, i; | |
821 | size_t len; | |
822 | int reloc_found_p = 0; | |
823 | #endif | |
252b5132 | 824 | |
ea1562b3 | 825 | memset (tok, 0, sizeof (*tok) * ntok); |
252b5132 | 826 | |
ea1562b3 NC |
827 | /* Save and restore input_line_pointer around this function. */ |
828 | old_input_line_pointer = input_line_pointer; | |
829 | input_line_pointer = str; | |
252b5132 | 830 | |
ea1562b3 NC |
831 | #ifdef RELOC_OP_P |
832 | /* ??? Wrest control of ! away from the regular expression parser. */ | |
833 | is_end_of_line[(unsigned char) '!'] = 1; | |
834 | #endif | |
252b5132 | 835 | |
ea1562b3 NC |
836 | while (tok < end_tok && *input_line_pointer) |
837 | { | |
838 | SKIP_WHITESPACE (); | |
839 | switch (*input_line_pointer) | |
840 | { | |
841 | case '\0': | |
842 | goto fini; | |
843 | ||
844 | #ifdef RELOC_OP_P | |
845 | case '!': | |
846 | /* A relocation operand can be placed after the normal operand on an | |
847 | assembly language statement, and has the following form: | |
848 | !relocation_type!sequence_number. */ | |
849 | if (reloc_found_p) | |
252b5132 | 850 | { |
ea1562b3 NC |
851 | /* Only support one relocation op per insn. */ |
852 | as_bad (_("More than one relocation op per insn")); | |
853 | goto err_report; | |
252b5132 | 854 | } |
252b5132 | 855 | |
ea1562b3 NC |
856 | if (!saw_arg) |
857 | goto err; | |
252b5132 | 858 | |
ea1562b3 NC |
859 | ++input_line_pointer; |
860 | SKIP_WHITESPACE (); | |
861 | p = input_line_pointer; | |
862 | c = get_symbol_end (); | |
252b5132 | 863 | |
ea1562b3 NC |
864 | /* Parse !relocation_type. */ |
865 | len = input_line_pointer - p; | |
866 | if (len == 0) | |
867 | { | |
868 | as_bad (_("No relocation operand")); | |
869 | goto err_report; | |
870 | } | |
252b5132 | 871 | |
ea1562b3 NC |
872 | r = &alpha_reloc_op[0]; |
873 | for (i = alpha_num_reloc_op - 1; i >= 0; i--, r++) | |
874 | if (len == r->length && memcmp (p, r->name, len) == 0) | |
875 | break; | |
876 | if (i < 0) | |
877 | { | |
878 | as_bad (_("Unknown relocation operand: !%s"), p); | |
879 | goto err_report; | |
880 | } | |
252b5132 | 881 | |
ea1562b3 NC |
882 | *input_line_pointer = c; |
883 | SKIP_WHITESPACE (); | |
884 | if (*input_line_pointer != '!') | |
885 | { | |
886 | if (r->require_seq) | |
887 | { | |
888 | as_bad (_("no sequence number after !%s"), p); | |
889 | goto err_report; | |
890 | } | |
252b5132 | 891 | |
ea1562b3 NC |
892 | tok->X_add_number = 0; |
893 | } | |
894 | else | |
895 | { | |
896 | if (! r->allow_seq) | |
897 | { | |
898 | as_bad (_("!%s does not use a sequence number"), p); | |
899 | goto err_report; | |
900 | } | |
252b5132 | 901 | |
ea1562b3 | 902 | input_line_pointer++; |
252b5132 | 903 | |
ea1562b3 NC |
904 | /* Parse !sequence_number. */ |
905 | expression (tok); | |
906 | if (tok->X_op != O_constant || tok->X_add_number <= 0) | |
907 | { | |
908 | as_bad (_("Bad sequence number: !%s!%s"), | |
909 | r->name, input_line_pointer); | |
910 | goto err_report; | |
911 | } | |
912 | } | |
252b5132 | 913 | |
ea1562b3 NC |
914 | tok->X_op = r->op; |
915 | reloc_found_p = 1; | |
916 | ++tok; | |
917 | break; | |
918 | #endif /* RELOC_OP_P */ | |
252b5132 | 919 | |
ea1562b3 NC |
920 | case ',': |
921 | ++input_line_pointer; | |
922 | if (saw_comma || !saw_arg) | |
923 | goto err; | |
924 | saw_comma = 1; | |
925 | break; | |
252b5132 | 926 | |
ea1562b3 NC |
927 | case '(': |
928 | { | |
929 | char *hold = input_line_pointer++; | |
252b5132 | 930 | |
ea1562b3 NC |
931 | /* First try for parenthesized register ... */ |
932 | expression (tok); | |
933 | if (*input_line_pointer == ')' && tok->X_op == O_register) | |
934 | { | |
935 | tok->X_op = (saw_comma ? O_cpregister : O_pregister); | |
936 | saw_comma = 0; | |
937 | saw_arg = 1; | |
938 | ++input_line_pointer; | |
939 | ++tok; | |
940 | break; | |
941 | } | |
252b5132 | 942 | |
ea1562b3 NC |
943 | /* ... then fall through to plain expression. */ |
944 | input_line_pointer = hold; | |
945 | } | |
252b5132 | 946 | |
ea1562b3 NC |
947 | default: |
948 | if (saw_arg && !saw_comma) | |
949 | goto err; | |
252b5132 | 950 | |
ea1562b3 NC |
951 | expression (tok); |
952 | if (tok->X_op == O_illegal || tok->X_op == O_absent) | |
953 | goto err; | |
252b5132 | 954 | |
ea1562b3 NC |
955 | saw_comma = 0; |
956 | saw_arg = 1; | |
957 | ++tok; | |
958 | break; | |
959 | } | |
960 | } | |
252b5132 | 961 | |
ea1562b3 NC |
962 | fini: |
963 | if (saw_comma) | |
964 | goto err; | |
965 | input_line_pointer = old_input_line_pointer; | |
252b5132 | 966 | |
ea1562b3 NC |
967 | #ifdef DEBUG_ALPHA |
968 | debug_exp (orig_tok, ntok - (end_tok - tok)); | |
252b5132 | 969 | #endif |
ea1562b3 NC |
970 | #ifdef RELOC_OP_P |
971 | is_end_of_line[(unsigned char) '!'] = 0; | |
252b5132 | 972 | #endif |
252b5132 | 973 | |
ea1562b3 | 974 | return ntok - (end_tok - tok); |
00f7efb6 | 975 | |
ea1562b3 NC |
976 | err: |
977 | #ifdef RELOC_OP_P | |
978 | is_end_of_line[(unsigned char) '!'] = 0; | |
543833df | 979 | #endif |
ea1562b3 NC |
980 | input_line_pointer = old_input_line_pointer; |
981 | return TOKENIZE_ERROR; | |
543833df | 982 | |
ea1562b3 NC |
983 | #ifdef RELOC_OP_P |
984 | err_report: | |
985 | is_end_of_line[(unsigned char) '!'] = 0; | |
252b5132 | 986 | #endif |
ea1562b3 NC |
987 | input_line_pointer = old_input_line_pointer; |
988 | return TOKENIZE_ERROR_REPORT; | |
989 | } | |
252b5132 | 990 | |
ea1562b3 NC |
991 | /* Search forward through all variants of an opcode looking for a |
992 | syntax match. */ | |
252b5132 | 993 | |
ea1562b3 NC |
994 | static const struct alpha_opcode * |
995 | find_opcode_match (const struct alpha_opcode *first_opcode, | |
996 | const expressionS *tok, | |
997 | int *pntok, | |
998 | int *pcpumatch) | |
999 | { | |
1000 | const struct alpha_opcode *opcode = first_opcode; | |
1001 | int ntok = *pntok; | |
1002 | int got_cpu_match = 0; | |
252b5132 | 1003 | |
ea1562b3 | 1004 | do |
252b5132 | 1005 | { |
ea1562b3 NC |
1006 | const unsigned char *opidx; |
1007 | int tokidx = 0; | |
252b5132 | 1008 | |
ea1562b3 NC |
1009 | /* Don't match opcodes that don't exist on this architecture. */ |
1010 | if (!(opcode->flags & alpha_target)) | |
1011 | goto match_failed; | |
252b5132 | 1012 | |
ea1562b3 | 1013 | got_cpu_match = 1; |
252b5132 | 1014 | |
ea1562b3 | 1015 | for (opidx = opcode->operands; *opidx; ++opidx) |
252b5132 | 1016 | { |
ea1562b3 | 1017 | const struct alpha_operand *operand = &alpha_operands[*opidx]; |
252b5132 | 1018 | |
ea1562b3 NC |
1019 | /* Only take input from real operands. */ |
1020 | if (operand->flags & AXP_OPERAND_FAKE) | |
1021 | continue; | |
252b5132 | 1022 | |
ea1562b3 NC |
1023 | /* When we expect input, make sure we have it. */ |
1024 | if (tokidx >= ntok) | |
252b5132 | 1025 | { |
ea1562b3 NC |
1026 | if ((operand->flags & AXP_OPERAND_OPTIONAL_MASK) == 0) |
1027 | goto match_failed; | |
1028 | continue; | |
252b5132 | 1029 | } |
252b5132 | 1030 | |
ea1562b3 NC |
1031 | /* Match operand type with expression type. */ |
1032 | switch (operand->flags & AXP_OPERAND_TYPECHECK_MASK) | |
252b5132 | 1033 | { |
ea1562b3 NC |
1034 | case AXP_OPERAND_IR: |
1035 | if (tok[tokidx].X_op != O_register | |
1036 | || !is_ir_num (tok[tokidx].X_add_number)) | |
1037 | goto match_failed; | |
1038 | break; | |
1039 | case AXP_OPERAND_FPR: | |
1040 | if (tok[tokidx].X_op != O_register | |
1041 | || !is_fpr_num (tok[tokidx].X_add_number)) | |
1042 | goto match_failed; | |
1043 | break; | |
1044 | case AXP_OPERAND_IR | AXP_OPERAND_PARENS: | |
1045 | if (tok[tokidx].X_op != O_pregister | |
1046 | || !is_ir_num (tok[tokidx].X_add_number)) | |
1047 | goto match_failed; | |
1048 | break; | |
1049 | case AXP_OPERAND_IR | AXP_OPERAND_PARENS | AXP_OPERAND_COMMA: | |
1050 | if (tok[tokidx].X_op != O_cpregister | |
1051 | || !is_ir_num (tok[tokidx].X_add_number)) | |
1052 | goto match_failed; | |
1053 | break; | |
252b5132 | 1054 | |
ea1562b3 NC |
1055 | case AXP_OPERAND_RELATIVE: |
1056 | case AXP_OPERAND_SIGNED: | |
1057 | case AXP_OPERAND_UNSIGNED: | |
1058 | switch (tok[tokidx].X_op) | |
1059 | { | |
1060 | case O_illegal: | |
1061 | case O_absent: | |
1062 | case O_register: | |
1063 | case O_pregister: | |
1064 | case O_cpregister: | |
1065 | goto match_failed; | |
252b5132 | 1066 | |
ea1562b3 NC |
1067 | default: |
1068 | break; | |
1069 | } | |
1070 | break; | |
1071 | ||
1072 | default: | |
1073 | /* Everything else should have been fake. */ | |
1074 | abort (); | |
1075 | } | |
1076 | ++tokidx; | |
252b5132 | 1077 | } |
ea1562b3 NC |
1078 | |
1079 | /* Possible match -- did we use all of our input? */ | |
1080 | if (tokidx == ntok) | |
1081 | { | |
1082 | *pntok = ntok; | |
1083 | return opcode; | |
1084 | } | |
1085 | ||
1086 | match_failed:; | |
252b5132 | 1087 | } |
ea1562b3 NC |
1088 | while (++opcode - alpha_opcodes < (int) alpha_num_opcodes |
1089 | && !strcmp (opcode->name, first_opcode->name)); | |
252b5132 | 1090 | |
ea1562b3 NC |
1091 | if (*pcpumatch) |
1092 | *pcpumatch = got_cpu_match; | |
252b5132 | 1093 | |
ea1562b3 | 1094 | return NULL; |
252b5132 | 1095 | } |
252b5132 | 1096 | |
ea1562b3 NC |
1097 | /* Given an opcode name and a pre-tokenized set of arguments, assemble |
1098 | the insn, but do not emit it. | |
252b5132 | 1099 | |
ea1562b3 NC |
1100 | Note that this implies no macros allowed, since we can't store more |
1101 | than one insn in an insn structure. */ | |
1102 | ||
1103 | static void | |
1104 | assemble_tokens_to_insn (const char *opname, | |
1105 | const expressionS *tok, | |
1106 | int ntok, | |
1107 | struct alpha_insn *insn) | |
252b5132 | 1108 | { |
ea1562b3 NC |
1109 | const struct alpha_opcode *opcode; |
1110 | ||
1111 | /* Search opcodes. */ | |
1112 | opcode = (const struct alpha_opcode *) hash_find (alpha_opcode_hash, opname); | |
1113 | if (opcode) | |
1114 | { | |
1115 | int cpumatch; | |
1116 | opcode = find_opcode_match (opcode, tok, &ntok, &cpumatch); | |
1117 | if (opcode) | |
1118 | { | |
1119 | assemble_insn (opcode, tok, ntok, insn, BFD_RELOC_UNUSED); | |
1120 | return; | |
1121 | } | |
1122 | else if (cpumatch) | |
1123 | as_bad (_("inappropriate arguments for opcode `%s'"), opname); | |
1124 | else | |
1125 | as_bad (_("opcode `%s' not supported for target %s"), opname, | |
1126 | alpha_target_name); | |
1127 | } | |
1128 | else | |
1129 | as_bad (_("unknown opcode `%s'"), opname); | |
252b5132 RH |
1130 | } |
1131 | ||
ea1562b3 NC |
1132 | /* Build a BFD section with its flags set appropriately for the .lita, |
1133 | .lit8, or .lit4 sections. */ | |
252b5132 | 1134 | |
ea1562b3 NC |
1135 | static void |
1136 | create_literal_section (const char *name, | |
1137 | segT *secp, | |
1138 | symbolS **symp) | |
252b5132 | 1139 | { |
ea1562b3 NC |
1140 | segT current_section = now_seg; |
1141 | int current_subsec = now_subseg; | |
1142 | segT new_sec; | |
252b5132 | 1143 | |
ea1562b3 NC |
1144 | *secp = new_sec = subseg_new (name, 0); |
1145 | subseg_set (current_section, current_subsec); | |
1146 | bfd_set_section_alignment (stdoutput, new_sec, 4); | |
1147 | bfd_set_section_flags (stdoutput, new_sec, | |
1148 | SEC_RELOC | SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
1149 | | SEC_DATA); | |
a161fe53 | 1150 | |
ea1562b3 | 1151 | S_CLEAR_EXTERNAL (*symp = section_symbol (new_sec)); |
252b5132 RH |
1152 | } |
1153 | ||
ea1562b3 | 1154 | /* Load a (partial) expression into a target register. |
252b5132 | 1155 | |
ea1562b3 NC |
1156 | If poffset is not null, after the call it will either contain |
1157 | O_constant 0, or a 16-bit offset appropriate for any MEM format | |
1158 | instruction. In addition, pbasereg will be modified to point to | |
1159 | the base register to use in that MEM format instruction. | |
252b5132 | 1160 | |
ea1562b3 NC |
1161 | In any case, *pbasereg should contain a base register to add to the |
1162 | expression. This will normally be either AXP_REG_ZERO or | |
1163 | alpha_gp_register. Symbol addresses will always be loaded via $gp, | |
1164 | so "foo($0)" is interpreted as adding the address of foo to $0; | |
1165 | i.e. "ldq $targ, LIT($gp); addq $targ, $0, $targ". Odd, perhaps, | |
1166 | but this is what OSF/1 does. | |
252b5132 | 1167 | |
ea1562b3 NC |
1168 | If explicit relocations of the form !literal!<number> are allowed, |
1169 | and used, then explicit_reloc with be an expression pointer. | |
252b5132 | 1170 | |
ea1562b3 NC |
1171 | Finally, the return value is nonzero if the calling macro may emit |
1172 | a LITUSE reloc if otherwise appropriate; the return value is the | |
1173 | sequence number to use. */ | |
252b5132 | 1174 | |
ea1562b3 NC |
1175 | static long |
1176 | load_expression (int targreg, | |
1177 | const expressionS *exp, | |
1178 | int *pbasereg, | |
1179 | expressionS *poffset) | |
1180 | { | |
1181 | long emit_lituse = 0; | |
1182 | offsetT addend = exp->X_add_number; | |
1183 | int basereg = *pbasereg; | |
1184 | struct alpha_insn insn; | |
1185 | expressionS newtok[3]; | |
3765b1be | 1186 | |
ea1562b3 NC |
1187 | switch (exp->X_op) |
1188 | { | |
1189 | case O_symbol: | |
66ba4c77 | 1190 | { |
ea1562b3 NC |
1191 | #ifdef OBJ_ECOFF |
1192 | offsetT lit; | |
66ba4c77 | 1193 | |
ea1562b3 NC |
1194 | /* Attempt to reduce .lit load by splitting the offset from |
1195 | its symbol when possible, but don't create a situation in | |
1196 | which we'd fail. */ | |
1197 | if (!range_signed_32 (addend) && | |
1198 | (alpha_noat_on || targreg == AXP_REG_AT)) | |
66ba4c77 | 1199 | { |
ea1562b3 NC |
1200 | lit = add_to_literal_pool (exp->X_add_symbol, addend, |
1201 | alpha_lita_section, 8); | |
1202 | addend = 0; | |
66ba4c77 | 1203 | } |
ea1562b3 NC |
1204 | else |
1205 | lit = add_to_literal_pool (exp->X_add_symbol, 0, | |
1206 | alpha_lita_section, 8); | |
252b5132 | 1207 | |
ea1562b3 NC |
1208 | if (lit >= 0x8000) |
1209 | as_fatal (_("overflow in literal (.lita) table")); | |
252b5132 | 1210 | |
ea1562b3 | 1211 | /* Emit "ldq r, lit(gp)". */ |
252b5132 | 1212 | |
ea1562b3 NC |
1213 | if (basereg != alpha_gp_register && targreg == basereg) |
1214 | { | |
1215 | if (alpha_noat_on) | |
1216 | as_bad (_("macro requires $at register while noat in effect")); | |
1217 | if (targreg == AXP_REG_AT) | |
1218 | as_bad (_("macro requires $at while $at in use")); | |
252b5132 | 1219 | |
ea1562b3 NC |
1220 | set_tok_reg (newtok[0], AXP_REG_AT); |
1221 | } | |
1222 | else | |
1223 | set_tok_reg (newtok[0], targreg); | |
252b5132 | 1224 | |
ea1562b3 NC |
1225 | set_tok_sym (newtok[1], alpha_lita_symbol, lit); |
1226 | set_tok_preg (newtok[2], alpha_gp_register); | |
252b5132 | 1227 | |
ea1562b3 | 1228 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); |
252b5132 | 1229 | |
ea1562b3 NC |
1230 | assert (insn.nfixups == 1); |
1231 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITERAL; | |
1232 | insn.sequence = emit_lituse = next_sequence_num--; | |
1233 | #endif /* OBJ_ECOFF */ | |
252b5132 | 1234 | #ifdef OBJ_ELF |
ea1562b3 | 1235 | /* Emit "ldq r, gotoff(gp)". */ |
252b5132 | 1236 | |
ea1562b3 NC |
1237 | if (basereg != alpha_gp_register && targreg == basereg) |
1238 | { | |
1239 | if (alpha_noat_on) | |
1240 | as_bad (_("macro requires $at register while noat in effect")); | |
1241 | if (targreg == AXP_REG_AT) | |
1242 | as_bad (_("macro requires $at while $at in use")); | |
252b5132 | 1243 | |
ea1562b3 NC |
1244 | set_tok_reg (newtok[0], AXP_REG_AT); |
1245 | } | |
1246 | else | |
1247 | set_tok_reg (newtok[0], targreg); | |
252b5132 | 1248 | |
ea1562b3 NC |
1249 | /* XXX: Disable this .got minimizing optimization so that we can get |
1250 | better instruction offset knowledge in the compiler. This happens | |
1251 | very infrequently anyway. */ | |
1252 | if (1 | |
1253 | || (!range_signed_32 (addend) | |
1254 | && (alpha_noat_on || targreg == AXP_REG_AT))) | |
1255 | { | |
1256 | newtok[1] = *exp; | |
1257 | addend = 0; | |
1258 | } | |
1259 | else | |
1260 | set_tok_sym (newtok[1], exp->X_add_symbol, 0); | |
252b5132 | 1261 | |
ea1562b3 | 1262 | set_tok_preg (newtok[2], alpha_gp_register); |
252b5132 | 1263 | |
ea1562b3 | 1264 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); |
252b5132 | 1265 | |
ea1562b3 NC |
1266 | assert (insn.nfixups == 1); |
1267 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_ELF_LITERAL; | |
1268 | insn.sequence = emit_lituse = next_sequence_num--; | |
1269 | #endif /* OBJ_ELF */ | |
1270 | #ifdef OBJ_EVAX | |
1271 | offsetT link; | |
252b5132 | 1272 | |
ea1562b3 | 1273 | /* Find symbol or symbol pointer in link section. */ |
252b5132 | 1274 | |
ea1562b3 NC |
1275 | if (exp->X_add_symbol == alpha_evax_proc.symbol) |
1276 | { | |
1277 | if (range_signed_16 (addend)) | |
1278 | { | |
1279 | set_tok_reg (newtok[0], targreg); | |
1280 | set_tok_const (newtok[1], addend); | |
1281 | set_tok_preg (newtok[2], basereg); | |
1282 | assemble_tokens_to_insn ("lda", newtok, 3, &insn); | |
1283 | addend = 0; | |
1284 | } | |
1285 | else | |
1286 | { | |
1287 | set_tok_reg (newtok[0], targreg); | |
1288 | set_tok_const (newtok[1], 0); | |
1289 | set_tok_preg (newtok[2], basereg); | |
1290 | assemble_tokens_to_insn ("lda", newtok, 3, &insn); | |
1291 | } | |
1292 | } | |
1293 | else | |
1294 | { | |
1295 | if (!range_signed_32 (addend)) | |
1296 | { | |
1297 | link = add_to_link_pool (alpha_evax_proc.symbol, | |
1298 | exp->X_add_symbol, addend); | |
1299 | addend = 0; | |
1300 | } | |
1301 | else | |
1302 | link = add_to_link_pool (alpha_evax_proc.symbol, | |
1303 | exp->X_add_symbol, 0); | |
252b5132 | 1304 | |
ea1562b3 NC |
1305 | set_tok_reg (newtok[0], targreg); |
1306 | set_tok_const (newtok[1], link); | |
1307 | set_tok_preg (newtok[2], basereg); | |
1308 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
1309 | } | |
1310 | #endif /* OBJ_EVAX */ | |
252b5132 | 1311 | |
ea1562b3 | 1312 | emit_insn (&insn); |
19f78583 | 1313 | |
ea1562b3 NC |
1314 | #ifndef OBJ_EVAX |
1315 | if (basereg != alpha_gp_register && basereg != AXP_REG_ZERO) | |
1316 | { | |
1317 | /* Emit "addq r, base, r". */ | |
19f78583 | 1318 | |
ea1562b3 NC |
1319 | set_tok_reg (newtok[1], basereg); |
1320 | set_tok_reg (newtok[2], targreg); | |
1321 | assemble_tokens ("addq", newtok, 3, 0); | |
1322 | } | |
1323 | #endif | |
1324 | basereg = targreg; | |
1325 | } | |
1326 | break; | |
19f78583 | 1327 | |
ea1562b3 NC |
1328 | case O_constant: |
1329 | break; | |
19f78583 | 1330 | |
ea1562b3 NC |
1331 | case O_subtract: |
1332 | /* Assume that this difference expression will be resolved to an | |
1333 | absolute value and that that value will fit in 16 bits. */ | |
19f78583 | 1334 | |
ea1562b3 NC |
1335 | set_tok_reg (newtok[0], targreg); |
1336 | newtok[1] = *exp; | |
1337 | set_tok_preg (newtok[2], basereg); | |
1338 | assemble_tokens ("lda", newtok, 3, 0); | |
43b4c25e | 1339 | |
ea1562b3 NC |
1340 | if (poffset) |
1341 | set_tok_const (*poffset, 0); | |
1342 | return 0; | |
43b4c25e | 1343 | |
ea1562b3 NC |
1344 | case O_big: |
1345 | if (exp->X_add_number > 0) | |
1346 | as_bad (_("bignum invalid; zero assumed")); | |
1347 | else | |
1348 | as_bad (_("floating point number invalid; zero assumed")); | |
1349 | addend = 0; | |
1350 | break; | |
43b4c25e | 1351 | |
ea1562b3 NC |
1352 | default: |
1353 | as_bad (_("can't handle expression")); | |
1354 | addend = 0; | |
1355 | break; | |
1356 | } | |
43b4c25e | 1357 | |
ea1562b3 | 1358 | if (!range_signed_32 (addend)) |
43b4c25e | 1359 | { |
ea1562b3 NC |
1360 | offsetT lit; |
1361 | long seq_num = next_sequence_num--; | |
43b4c25e | 1362 | |
ea1562b3 NC |
1363 | /* For 64-bit addends, just put it in the literal pool. */ |
1364 | #ifdef OBJ_EVAX | |
1365 | /* Emit "ldq targreg, lit(basereg)". */ | |
1366 | lit = add_to_link_pool (alpha_evax_proc.symbol, | |
1367 | section_symbol (absolute_section), addend); | |
1368 | set_tok_reg (newtok[0], targreg); | |
1369 | set_tok_const (newtok[1], lit); | |
1370 | set_tok_preg (newtok[2], alpha_gp_register); | |
1371 | assemble_tokens ("ldq", newtok, 3, 0); | |
1372 | #else | |
1373 | ||
1374 | if (alpha_lit8_section == NULL) | |
43b4c25e | 1375 | { |
ea1562b3 NC |
1376 | create_literal_section (".lit8", |
1377 | &alpha_lit8_section, | |
1378 | &alpha_lit8_symbol); | |
1379 | ||
1380 | #ifdef OBJ_ECOFF | |
1381 | alpha_lit8_literal = add_to_literal_pool (alpha_lit8_symbol, 0x8000, | |
1382 | alpha_lita_section, 8); | |
1383 | if (alpha_lit8_literal >= 0x8000) | |
1384 | as_fatal (_("overflow in literal (.lita) table")); | |
11f45fb5 | 1385 | #endif |
ea1562b3 | 1386 | } |
43b4c25e | 1387 | |
ea1562b3 NC |
1388 | lit = add_to_literal_pool (NULL, addend, alpha_lit8_section, 8) - 0x8000; |
1389 | if (lit >= 0x8000) | |
1390 | as_fatal (_("overflow in literal (.lit8) table")); | |
19f78583 | 1391 | |
ea1562b3 | 1392 | /* Emit "lda litreg, .lit8+0x8000". */ |
3765b1be | 1393 | |
ea1562b3 NC |
1394 | if (targreg == basereg) |
1395 | { | |
1396 | if (alpha_noat_on) | |
1397 | as_bad (_("macro requires $at register while noat in effect")); | |
1398 | if (targreg == AXP_REG_AT) | |
1399 | as_bad (_("macro requires $at while $at in use")); | |
1400 | ||
1401 | set_tok_reg (newtok[0], AXP_REG_AT); | |
43b4c25e | 1402 | } |
ea1562b3 NC |
1403 | else |
1404 | set_tok_reg (newtok[0], targreg); | |
1405 | #ifdef OBJ_ECOFF | |
1406 | set_tok_sym (newtok[1], alpha_lita_symbol, alpha_lit8_literal); | |
1407 | #endif | |
1408 | #ifdef OBJ_ELF | |
1409 | set_tok_sym (newtok[1], alpha_lit8_symbol, 0x8000); | |
1410 | #endif | |
1411 | set_tok_preg (newtok[2], alpha_gp_register); | |
43b4c25e | 1412 | |
ea1562b3 | 1413 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); |
19f78583 | 1414 | |
ea1562b3 NC |
1415 | assert (insn.nfixups == 1); |
1416 | #ifdef OBJ_ECOFF | |
1417 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITERAL; | |
1418 | #endif | |
1419 | #ifdef OBJ_ELF | |
1420 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_ELF_LITERAL; | |
1421 | #endif | |
1422 | insn.sequence = seq_num; | |
19f78583 | 1423 | |
ea1562b3 | 1424 | emit_insn (&insn); |
19f78583 | 1425 | |
ea1562b3 | 1426 | /* Emit "ldq litreg, lit(litreg)". */ |
19f78583 | 1427 | |
ea1562b3 NC |
1428 | set_tok_const (newtok[1], lit); |
1429 | set_tok_preg (newtok[2], newtok[0].X_add_number); | |
1430 | ||
1431 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
1432 | ||
1433 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
1434 | insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE; | |
1435 | insn.fixups[insn.nfixups].exp.X_op = O_absent; | |
1436 | insn.nfixups++; | |
1437 | insn.sequence = seq_num; | |
1438 | emit_lituse = 0; | |
1439 | ||
1440 | emit_insn (&insn); | |
1441 | ||
1442 | /* Emit "addq litreg, base, target". */ | |
1443 | ||
1444 | if (basereg != AXP_REG_ZERO) | |
1445 | { | |
1446 | set_tok_reg (newtok[1], basereg); | |
1447 | set_tok_reg (newtok[2], targreg); | |
1448 | assemble_tokens ("addq", newtok, 3, 0); | |
1449 | } | |
1450 | #endif /* !OBJ_EVAX */ | |
1451 | ||
1452 | if (poffset) | |
1453 | set_tok_const (*poffset, 0); | |
1454 | *pbasereg = targreg; | |
1455 | } | |
1456 | else | |
43b4c25e | 1457 | { |
ea1562b3 NC |
1458 | offsetT low, high, extra, tmp; |
1459 | ||
1460 | /* For 32-bit operands, break up the addend. */ | |
1461 | ||
1462 | low = sign_extend_16 (addend); | |
1463 | tmp = addend - low; | |
1464 | high = sign_extend_16 (tmp >> 16); | |
1465 | ||
1466 | if (tmp - (high << 16)) | |
43b4c25e | 1467 | { |
ea1562b3 NC |
1468 | extra = 0x4000; |
1469 | tmp -= 0x40000000; | |
1470 | high = sign_extend_16 (tmp >> 16); | |
1471 | } | |
1472 | else | |
1473 | extra = 0; | |
3765b1be | 1474 | |
ea1562b3 NC |
1475 | set_tok_reg (newtok[0], targreg); |
1476 | set_tok_preg (newtok[2], basereg); | |
3765b1be | 1477 | |
ea1562b3 NC |
1478 | if (extra) |
1479 | { | |
1480 | /* Emit "ldah r, extra(r). */ | |
1481 | set_tok_const (newtok[1], extra); | |
1482 | assemble_tokens ("ldah", newtok, 3, 0); | |
1483 | set_tok_preg (newtok[2], basereg = targreg); | |
1484 | } | |
43b4c25e | 1485 | |
ea1562b3 NC |
1486 | if (high) |
1487 | { | |
1488 | /* Emit "ldah r, high(r). */ | |
1489 | set_tok_const (newtok[1], high); | |
1490 | assemble_tokens ("ldah", newtok, 3, 0); | |
1491 | basereg = targreg; | |
1492 | set_tok_preg (newtok[2], basereg); | |
1493 | } | |
19f78583 | 1494 | |
ea1562b3 NC |
1495 | if ((low && !poffset) || (!poffset && basereg != targreg)) |
1496 | { | |
1497 | /* Emit "lda r, low(base)". */ | |
1498 | set_tok_const (newtok[1], low); | |
1499 | assemble_tokens ("lda", newtok, 3, 0); | |
1500 | basereg = targreg; | |
1501 | low = 0; | |
43b4c25e | 1502 | } |
ea1562b3 NC |
1503 | |
1504 | if (poffset) | |
1505 | set_tok_const (*poffset, low); | |
1506 | *pbasereg = basereg; | |
43b4c25e | 1507 | } |
ea1562b3 NC |
1508 | |
1509 | return emit_lituse; | |
43b4c25e | 1510 | } |
43b4c25e | 1511 | |
ea1562b3 NC |
1512 | /* The lda macro differs from the lda instruction in that it handles |
1513 | most simple expressions, particularly symbol address loads and | |
1514 | large constants. */ | |
11f45fb5 | 1515 | |
ea1562b3 NC |
1516 | static void |
1517 | emit_lda (const expressionS *tok, | |
1518 | int ntok, | |
1519 | const void * unused ATTRIBUTE_UNUSED) | |
1520 | { | |
1521 | int basereg; | |
43b4c25e | 1522 | |
ea1562b3 NC |
1523 | if (ntok == 2) |
1524 | basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register); | |
1525 | else | |
1526 | basereg = tok[2].X_add_number; | |
1527 | ||
1528 | (void) load_expression (tok[0].X_add_number, &tok[1], &basereg, NULL); | |
43b4c25e | 1529 | } |
43b4c25e | 1530 | |
ea1562b3 NC |
1531 | /* The ldah macro differs from the ldah instruction in that it has $31 |
1532 | as an implied base register. */ | |
252b5132 | 1533 | |
ea1562b3 NC |
1534 | static void |
1535 | emit_ldah (const expressionS *tok, | |
1536 | int ntok ATTRIBUTE_UNUSED, | |
1537 | const void * unused ATTRIBUTE_UNUSED) | |
252b5132 | 1538 | { |
ea1562b3 | 1539 | expressionS newtok[3]; |
252b5132 | 1540 | |
ea1562b3 NC |
1541 | newtok[0] = tok[0]; |
1542 | newtok[1] = tok[1]; | |
1543 | set_tok_preg (newtok[2], AXP_REG_ZERO); | |
252b5132 | 1544 | |
ea1562b3 NC |
1545 | assemble_tokens ("ldah", newtok, 3, 0); |
1546 | } | |
19f78583 | 1547 | |
ea1562b3 NC |
1548 | /* Called internally to handle all alignment needs. This takes care |
1549 | of eliding calls to frag_align if'n the cached current alignment | |
1550 | says we've already got it, as well as taking care of the auto-align | |
1551 | feature wrt labels. */ | |
252b5132 | 1552 | |
ea1562b3 NC |
1553 | static void |
1554 | alpha_align (int n, | |
1555 | char *pfill, | |
1556 | symbolS *label, | |
1557 | int force ATTRIBUTE_UNUSED) | |
1558 | { | |
1559 | if (alpha_current_align >= n) | |
1560 | return; | |
43b4c25e | 1561 | |
ea1562b3 NC |
1562 | if (pfill == NULL) |
1563 | { | |
1564 | if (subseg_text_p (now_seg)) | |
1565 | frag_align_code (n, 0); | |
1566 | else | |
1567 | frag_align (n, 0, 0); | |
1568 | } | |
1569 | else | |
1570 | frag_align (n, *pfill, 0); | |
43b4c25e | 1571 | |
ea1562b3 | 1572 | alpha_current_align = n; |
43b4c25e | 1573 | |
ea1562b3 NC |
1574 | if (label != NULL && S_GET_SEGMENT (label) == now_seg) |
1575 | { | |
1576 | symbol_set_frag (label, frag_now); | |
1577 | S_SET_VALUE (label, (valueT) frag_now_fix ()); | |
1578 | } | |
43b4c25e | 1579 | |
ea1562b3 | 1580 | record_alignment (now_seg, n); |
43b4c25e | 1581 | |
ea1562b3 NC |
1582 | /* ??? If alpha_flag_relax && force && elf, record the requested alignment |
1583 | in a reloc for the linker to see. */ | |
1584 | } | |
19f78583 | 1585 | |
ea1562b3 | 1586 | /* Actually output an instruction with its fixup. */ |
19f78583 | 1587 | |
ea1562b3 NC |
1588 | static void |
1589 | emit_insn (struct alpha_insn *insn) | |
1590 | { | |
1591 | char *f; | |
1592 | int i; | |
43b4c25e | 1593 | |
ea1562b3 NC |
1594 | /* Take care of alignment duties. */ |
1595 | if (alpha_auto_align_on && alpha_current_align < 2) | |
1596 | alpha_align (2, (char *) NULL, alpha_insn_label, 0); | |
1597 | if (alpha_current_align > 2) | |
1598 | alpha_current_align = 2; | |
1599 | alpha_insn_label = NULL; | |
43b4c25e | 1600 | |
ea1562b3 NC |
1601 | /* Write out the instruction. */ |
1602 | f = frag_more (4); | |
1603 | md_number_to_chars (f, insn->insn, 4); | |
43b4c25e | 1604 | |
ea1562b3 NC |
1605 | #ifdef OBJ_ELF |
1606 | dwarf2_emit_insn (4); | |
1607 | #endif | |
252b5132 | 1608 | |
ea1562b3 NC |
1609 | /* Apply the fixups in order. */ |
1610 | for (i = 0; i < insn->nfixups; ++i) | |
1611 | { | |
1612 | const struct alpha_operand *operand = (const struct alpha_operand *) 0; | |
1613 | struct alpha_fixup *fixup = &insn->fixups[i]; | |
1614 | struct alpha_reloc_tag *info = NULL; | |
1615 | int size, pcrel; | |
1616 | fixS *fixP; | |
252b5132 | 1617 | |
ea1562b3 NC |
1618 | /* Some fixups are only used internally and so have no howto. */ |
1619 | if ((int) fixup->reloc < 0) | |
1620 | { | |
1621 | operand = &alpha_operands[-(int) fixup->reloc]; | |
1622 | size = 4; | |
1623 | pcrel = ((operand->flags & AXP_OPERAND_RELATIVE) != 0); | |
1624 | } | |
1625 | else if (fixup->reloc > BFD_RELOC_UNUSED | |
1626 | || fixup->reloc == BFD_RELOC_ALPHA_GPDISP_HI16 | |
1627 | || fixup->reloc == BFD_RELOC_ALPHA_GPDISP_LO16) | |
1628 | { | |
1629 | size = 2; | |
1630 | pcrel = 0; | |
1631 | } | |
1632 | else | |
1633 | { | |
1634 | reloc_howto_type *reloc_howto | |
1635 | = bfd_reloc_type_lookup (stdoutput, fixup->reloc); | |
1636 | assert (reloc_howto); | |
252b5132 | 1637 | |
ea1562b3 NC |
1638 | size = bfd_get_reloc_size (reloc_howto); |
1639 | assert (size >= 1 && size <= 4); | |
252b5132 | 1640 | |
ea1562b3 NC |
1641 | pcrel = reloc_howto->pc_relative; |
1642 | } | |
43b4c25e | 1643 | |
ea1562b3 NC |
1644 | fixP = fix_new_exp (frag_now, f - frag_now->fr_literal, size, |
1645 | &fixup->exp, pcrel, fixup->reloc); | |
252b5132 | 1646 | |
ea1562b3 NC |
1647 | /* Turn off complaints that the addend is too large for some fixups, |
1648 | and copy in the sequence number for the explicit relocations. */ | |
1649 | switch (fixup->reloc) | |
1650 | { | |
1651 | case BFD_RELOC_ALPHA_HINT: | |
1652 | case BFD_RELOC_GPREL32: | |
1653 | case BFD_RELOC_GPREL16: | |
1654 | case BFD_RELOC_ALPHA_GPREL_HI16: | |
1655 | case BFD_RELOC_ALPHA_GPREL_LO16: | |
1656 | case BFD_RELOC_ALPHA_GOTDTPREL16: | |
1657 | case BFD_RELOC_ALPHA_DTPREL_HI16: | |
1658 | case BFD_RELOC_ALPHA_DTPREL_LO16: | |
1659 | case BFD_RELOC_ALPHA_DTPREL16: | |
1660 | case BFD_RELOC_ALPHA_GOTTPREL16: | |
1661 | case BFD_RELOC_ALPHA_TPREL_HI16: | |
1662 | case BFD_RELOC_ALPHA_TPREL_LO16: | |
1663 | case BFD_RELOC_ALPHA_TPREL16: | |
1664 | fixP->fx_no_overflow = 1; | |
252b5132 | 1665 | break; |
252b5132 | 1666 | |
ea1562b3 NC |
1667 | case BFD_RELOC_ALPHA_GPDISP_HI16: |
1668 | fixP->fx_no_overflow = 1; | |
1669 | fixP->fx_addsy = section_symbol (now_seg); | |
1670 | fixP->fx_offset = 0; | |
43b4c25e | 1671 | |
ea1562b3 NC |
1672 | info = get_alpha_reloc_tag (insn->sequence); |
1673 | if (++info->n_master > 1) | |
1674 | as_bad (_("too many ldah insns for !gpdisp!%ld"), insn->sequence); | |
1675 | if (info->segment != now_seg) | |
1676 | as_bad (_("both insns for !gpdisp!%ld must be in the same section"), | |
1677 | insn->sequence); | |
1678 | fixP->tc_fix_data.info = info; | |
1679 | break; | |
43b4c25e | 1680 | |
ea1562b3 NC |
1681 | case BFD_RELOC_ALPHA_GPDISP_LO16: |
1682 | fixP->fx_no_overflow = 1; | |
252b5132 | 1683 | |
ea1562b3 NC |
1684 | info = get_alpha_reloc_tag (insn->sequence); |
1685 | if (++info->n_slaves > 1) | |
1686 | as_bad (_("too many lda insns for !gpdisp!%ld"), insn->sequence); | |
1687 | if (info->segment != now_seg) | |
1688 | as_bad (_("both insns for !gpdisp!%ld must be in the same section"), | |
1689 | insn->sequence); | |
1690 | fixP->tc_fix_data.info = info; | |
1691 | info->slaves = fixP; | |
1692 | break; | |
1693 | ||
1694 | case BFD_RELOC_ALPHA_LITERAL: | |
1695 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
1696 | fixP->fx_no_overflow = 1; | |
1697 | ||
1698 | if (insn->sequence == 0) | |
1699 | break; | |
1700 | info = get_alpha_reloc_tag (insn->sequence); | |
1701 | info->master = fixP; | |
1702 | info->n_master++; | |
1703 | if (info->segment != now_seg) | |
1704 | info->multi_section_p = 1; | |
1705 | fixP->tc_fix_data.info = info; | |
1706 | break; | |
43b4c25e | 1707 | |
19f78583 | 1708 | #ifdef RELOC_OP_P |
ea1562b3 NC |
1709 | case DUMMY_RELOC_LITUSE_ADDR: |
1710 | fixP->fx_offset = LITUSE_ALPHA_ADDR; | |
1711 | goto do_lituse; | |
1712 | case DUMMY_RELOC_LITUSE_BASE: | |
1713 | fixP->fx_offset = LITUSE_ALPHA_BASE; | |
1714 | goto do_lituse; | |
1715 | case DUMMY_RELOC_LITUSE_BYTOFF: | |
1716 | fixP->fx_offset = LITUSE_ALPHA_BYTOFF; | |
1717 | goto do_lituse; | |
1718 | case DUMMY_RELOC_LITUSE_JSR: | |
1719 | fixP->fx_offset = LITUSE_ALPHA_JSR; | |
1720 | goto do_lituse; | |
1721 | case DUMMY_RELOC_LITUSE_TLSGD: | |
1722 | fixP->fx_offset = LITUSE_ALPHA_TLSGD; | |
1723 | goto do_lituse; | |
1724 | case DUMMY_RELOC_LITUSE_TLSLDM: | |
1725 | fixP->fx_offset = LITUSE_ALPHA_TLSLDM; | |
1726 | goto do_lituse; | |
04fe8f58 RH |
1727 | case DUMMY_RELOC_LITUSE_JSRDIRECT: |
1728 | fixP->fx_offset = LITUSE_ALPHA_JSRDIRECT; | |
1729 | goto do_lituse; | |
ea1562b3 NC |
1730 | do_lituse: |
1731 | fixP->fx_addsy = section_symbol (now_seg); | |
1732 | fixP->fx_r_type = BFD_RELOC_ALPHA_LITUSE; | |
1733 | ||
1734 | info = get_alpha_reloc_tag (insn->sequence); | |
1735 | if (fixup->reloc == DUMMY_RELOC_LITUSE_TLSGD) | |
1736 | info->saw_lu_tlsgd = 1; | |
1737 | else if (fixup->reloc == DUMMY_RELOC_LITUSE_TLSLDM) | |
1738 | info->saw_lu_tlsldm = 1; | |
1739 | if (++info->n_slaves > 1) | |
1740 | { | |
1741 | if (info->saw_lu_tlsgd) | |
1742 | as_bad (_("too many lituse insns for !lituse_tlsgd!%ld"), | |
1743 | insn->sequence); | |
1744 | else if (info->saw_lu_tlsldm) | |
1745 | as_bad (_("too many lituse insns for !lituse_tlsldm!%ld"), | |
1746 | insn->sequence); | |
1747 | } | |
1748 | fixP->tc_fix_data.info = info; | |
1749 | fixP->tc_fix_data.next_reloc = info->slaves; | |
1750 | info->slaves = fixP; | |
1751 | if (info->segment != now_seg) | |
1752 | info->multi_section_p = 1; | |
1753 | break; | |
1754 | ||
1755 | case BFD_RELOC_ALPHA_TLSGD: | |
1756 | fixP->fx_no_overflow = 1; | |
1757 | ||
1758 | if (insn->sequence == 0) | |
1759 | break; | |
1760 | info = get_alpha_reloc_tag (insn->sequence); | |
1761 | if (info->saw_tlsgd) | |
1762 | as_bad (_("duplicate !tlsgd!%ld"), insn->sequence); | |
1763 | else if (info->saw_tlsldm) | |
1764 | as_bad (_("sequence number in use for !tlsldm!%ld"), | |
1765 | insn->sequence); | |
1766 | else | |
1767 | info->saw_tlsgd = 1; | |
1768 | fixP->tc_fix_data.info = info; | |
1769 | break; | |
1770 | ||
1771 | case BFD_RELOC_ALPHA_TLSLDM: | |
1772 | fixP->fx_no_overflow = 1; | |
1773 | ||
1774 | if (insn->sequence == 0) | |
1775 | break; | |
1776 | info = get_alpha_reloc_tag (insn->sequence); | |
1777 | if (info->saw_tlsldm) | |
1778 | as_bad (_("duplicate !tlsldm!%ld"), insn->sequence); | |
1779 | else if (info->saw_tlsgd) | |
1780 | as_bad (_("sequence number in use for !tlsgd!%ld"), | |
1781 | insn->sequence); | |
1782 | else | |
1783 | info->saw_tlsldm = 1; | |
1784 | fixP->tc_fix_data.info = info; | |
1785 | break; | |
19f78583 | 1786 | #endif |
ea1562b3 NC |
1787 | default: |
1788 | if ((int) fixup->reloc < 0) | |
1789 | { | |
1790 | if (operand->flags & AXP_OPERAND_NOOVERFLOW) | |
1791 | fixP->fx_no_overflow = 1; | |
1792 | } | |
1793 | break; | |
1794 | } | |
1795 | } | |
252b5132 RH |
1796 | } |
1797 | ||
ea1562b3 | 1798 | /* Insert an operand value into an instruction. */ |
252b5132 | 1799 | |
ea1562b3 NC |
1800 | static unsigned |
1801 | insert_operand (unsigned insn, | |
1802 | const struct alpha_operand *operand, | |
1803 | offsetT val, | |
1804 | char *file, | |
1805 | unsigned line) | |
252b5132 | 1806 | { |
ea1562b3 | 1807 | if (operand->bits != 32 && !(operand->flags & AXP_OPERAND_NOOVERFLOW)) |
252b5132 | 1808 | { |
ea1562b3 | 1809 | offsetT min, max; |
252b5132 | 1810 | |
ea1562b3 | 1811 | if (operand->flags & AXP_OPERAND_SIGNED) |
252b5132 | 1812 | { |
ea1562b3 NC |
1813 | max = (1 << (operand->bits - 1)) - 1; |
1814 | min = -(1 << (operand->bits - 1)); | |
1815 | } | |
1816 | else | |
1817 | { | |
1818 | max = (1 << operand->bits) - 1; | |
1819 | min = 0; | |
1820 | } | |
252b5132 | 1821 | |
ea1562b3 NC |
1822 | if (val < min || val > max) |
1823 | as_warn_value_out_of_range (_("operand"), val, min, max, file, line); | |
1824 | } | |
252b5132 | 1825 | |
ea1562b3 NC |
1826 | if (operand->insert) |
1827 | { | |
1828 | const char *errmsg = NULL; | |
252b5132 RH |
1829 | |
1830 | insn = (*operand->insert) (insn, val, &errmsg); | |
1831 | if (errmsg) | |
1832 | as_warn (errmsg); | |
1833 | } | |
1834 | else | |
1835 | insn |= ((val & ((1 << operand->bits) - 1)) << operand->shift); | |
1836 | ||
1837 | return insn; | |
1838 | } | |
1839 | ||
11f45fb5 NC |
1840 | /* Turn an opcode description and a set of arguments into |
1841 | an instruction and a fixup. */ | |
252b5132 RH |
1842 | |
1843 | static void | |
ea1562b3 NC |
1844 | assemble_insn (const struct alpha_opcode *opcode, |
1845 | const expressionS *tok, | |
1846 | int ntok, | |
1847 | struct alpha_insn *insn, | |
1848 | bfd_reloc_code_real_type reloc) | |
252b5132 | 1849 | { |
19f78583 RH |
1850 | const struct alpha_operand *reloc_operand = NULL; |
1851 | const expressionS *reloc_exp = NULL; | |
252b5132 RH |
1852 | const unsigned char *argidx; |
1853 | unsigned image; | |
1854 | int tokidx = 0; | |
1855 | ||
1856 | memset (insn, 0, sizeof (*insn)); | |
1857 | image = opcode->opcode; | |
1858 | ||
1859 | for (argidx = opcode->operands; *argidx; ++argidx) | |
1860 | { | |
1861 | const struct alpha_operand *operand = &alpha_operands[*argidx]; | |
32ff5c2e | 1862 | const expressionS *t = (const expressionS *) 0; |
252b5132 RH |
1863 | |
1864 | if (operand->flags & AXP_OPERAND_FAKE) | |
1865 | { | |
ea1562b3 | 1866 | /* Fake operands take no value and generate no fixup. */ |
32ff5c2e | 1867 | image = insert_operand (image, operand, 0, NULL, 0); |
252b5132 RH |
1868 | continue; |
1869 | } | |
1870 | ||
1871 | if (tokidx >= ntok) | |
1872 | { | |
1873 | switch (operand->flags & AXP_OPERAND_OPTIONAL_MASK) | |
1874 | { | |
1875 | case AXP_OPERAND_DEFAULT_FIRST: | |
1876 | t = &tok[0]; | |
1877 | break; | |
1878 | case AXP_OPERAND_DEFAULT_SECOND: | |
1879 | t = &tok[1]; | |
1880 | break; | |
1881 | case AXP_OPERAND_DEFAULT_ZERO: | |
1882 | { | |
446a06c9 | 1883 | static expressionS zero_exp; |
252b5132 | 1884 | t = &zero_exp; |
446a06c9 MM |
1885 | zero_exp.X_op = O_constant; |
1886 | zero_exp.X_unsigned = 1; | |
252b5132 RH |
1887 | } |
1888 | break; | |
1889 | default: | |
bc805888 | 1890 | abort (); |
252b5132 RH |
1891 | } |
1892 | } | |
1893 | else | |
1894 | t = &tok[tokidx++]; | |
1895 | ||
1896 | switch (t->X_op) | |
1897 | { | |
1898 | case O_register: | |
1899 | case O_pregister: | |
1900 | case O_cpregister: | |
32ff5c2e KH |
1901 | image = insert_operand (image, operand, regno (t->X_add_number), |
1902 | NULL, 0); | |
252b5132 RH |
1903 | break; |
1904 | ||
1905 | case O_constant: | |
32ff5c2e | 1906 | image = insert_operand (image, operand, t->X_add_number, NULL, 0); |
19f78583 RH |
1907 | assert (reloc_operand == NULL); |
1908 | reloc_operand = operand; | |
1909 | reloc_exp = t; | |
252b5132 RH |
1910 | break; |
1911 | ||
1912 | default: | |
19f78583 RH |
1913 | /* This is only 0 for fields that should contain registers, |
1914 | which means this pattern shouldn't have matched. */ | |
1915 | if (operand->default_reloc == 0) | |
1916 | abort (); | |
252b5132 | 1917 | |
19f78583 | 1918 | /* There is one special case for which an insn receives two |
cc8a6dd0 | 1919 | relocations, and thus the user-supplied reloc does not |
19f78583 RH |
1920 | override the operand reloc. */ |
1921 | if (operand->default_reloc == BFD_RELOC_ALPHA_HINT) | |
1922 | { | |
1923 | struct alpha_fixup *fixup; | |
252b5132 | 1924 | |
19f78583 RH |
1925 | if (insn->nfixups >= MAX_INSN_FIXUPS) |
1926 | as_fatal (_("too many fixups")); | |
252b5132 | 1927 | |
19f78583 RH |
1928 | fixup = &insn->fixups[insn->nfixups++]; |
1929 | fixup->exp = *t; | |
1930 | fixup->reloc = BFD_RELOC_ALPHA_HINT; | |
1931 | } | |
1932 | else | |
1933 | { | |
1934 | if (reloc == BFD_RELOC_UNUSED) | |
1935 | reloc = operand->default_reloc; | |
1936 | ||
1937 | assert (reloc_operand == NULL); | |
1938 | reloc_operand = operand; | |
1939 | reloc_exp = t; | |
1940 | } | |
252b5132 RH |
1941 | break; |
1942 | } | |
1943 | } | |
1944 | ||
19f78583 RH |
1945 | if (reloc != BFD_RELOC_UNUSED) |
1946 | { | |
1947 | struct alpha_fixup *fixup; | |
1948 | ||
1949 | if (insn->nfixups >= MAX_INSN_FIXUPS) | |
1950 | as_fatal (_("too many fixups")); | |
1951 | ||
1952 | /* ??? My but this is hacky. But the OSF/1 assembler uses the same | |
1953 | relocation tag for both ldah and lda with gpdisp. Choose the | |
1954 | correct internal relocation based on the opcode. */ | |
1955 | if (reloc == BFD_RELOC_ALPHA_GPDISP) | |
1956 | { | |
1957 | if (strcmp (opcode->name, "ldah") == 0) | |
1958 | reloc = BFD_RELOC_ALPHA_GPDISP_HI16; | |
1959 | else if (strcmp (opcode->name, "lda") == 0) | |
1960 | reloc = BFD_RELOC_ALPHA_GPDISP_LO16; | |
1961 | else | |
1962 | as_bad (_("invalid relocation for instruction")); | |
1963 | } | |
1964 | ||
1965 | /* If this is a real relocation (as opposed to a lituse hint), then | |
1966 | the relocation width should match the operand width. */ | |
1967 | else if (reloc < BFD_RELOC_UNUSED) | |
1968 | { | |
1969 | reloc_howto_type *reloc_howto | |
1970 | = bfd_reloc_type_lookup (stdoutput, reloc); | |
ee21dcab AM |
1971 | if (reloc_operand == NULL |
1972 | || reloc_howto->bitsize != reloc_operand->bits) | |
19f78583 RH |
1973 | { |
1974 | as_bad (_("invalid relocation for field")); | |
1975 | return; | |
1976 | } | |
1977 | } | |
1978 | ||
1979 | fixup = &insn->fixups[insn->nfixups++]; | |
1980 | if (reloc_exp) | |
1981 | fixup->exp = *reloc_exp; | |
1982 | else | |
1983 | fixup->exp.X_op = O_absent; | |
1984 | fixup->reloc = reloc; | |
1985 | } | |
1986 | ||
252b5132 RH |
1987 | insn->insn = image; |
1988 | } | |
1989 | ||
ea1562b3 NC |
1990 | /* Handle all "simple" integer register loads -- ldq, ldq_l, ldq_u, |
1991 | etc. They differ from the real instructions in that they do simple | |
1992 | expressions like the lda macro. */ | |
252b5132 RH |
1993 | |
1994 | static void | |
ea1562b3 NC |
1995 | emit_ir_load (const expressionS *tok, |
1996 | int ntok, | |
1997 | const void * opname) | |
252b5132 | 1998 | { |
ea1562b3 NC |
1999 | int basereg; |
2000 | long lituse; | |
2001 | expressionS newtok[3]; | |
2002 | struct alpha_insn insn; | |
252b5132 | 2003 | |
ea1562b3 NC |
2004 | if (ntok == 2) |
2005 | basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register); | |
2006 | else | |
2007 | basereg = tok[2].X_add_number; | |
252b5132 | 2008 | |
ea1562b3 NC |
2009 | lituse = load_expression (tok[0].X_add_number, &tok[1], &basereg, |
2010 | &newtok[1]); | |
252b5132 | 2011 | |
ea1562b3 NC |
2012 | newtok[0] = tok[0]; |
2013 | set_tok_preg (newtok[2], basereg); | |
4dc7ead9 | 2014 | |
ea1562b3 NC |
2015 | assemble_tokens_to_insn ((const char *) opname, newtok, 3, &insn); |
2016 | ||
2017 | if (lituse) | |
252b5132 | 2018 | { |
ea1562b3 NC |
2019 | assert (insn.nfixups < MAX_INSN_FIXUPS); |
2020 | insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE; | |
2021 | insn.fixups[insn.nfixups].exp.X_op = O_absent; | |
2022 | insn.nfixups++; | |
2023 | insn.sequence = lituse; | |
2024 | } | |
252b5132 | 2025 | |
ea1562b3 NC |
2026 | emit_insn (&insn); |
2027 | } | |
252b5132 | 2028 | |
ea1562b3 NC |
2029 | /* Handle fp register loads, and both integer and fp register stores. |
2030 | Again, we handle simple expressions. */ | |
43b4c25e | 2031 | |
ea1562b3 NC |
2032 | static void |
2033 | emit_loadstore (const expressionS *tok, | |
2034 | int ntok, | |
2035 | const void * opname) | |
2036 | { | |
2037 | int basereg; | |
2038 | long lituse; | |
2039 | expressionS newtok[3]; | |
2040 | struct alpha_insn insn; | |
252b5132 | 2041 | |
ea1562b3 NC |
2042 | if (ntok == 2) |
2043 | basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register); | |
2044 | else | |
2045 | basereg = tok[2].X_add_number; | |
252b5132 | 2046 | |
ea1562b3 NC |
2047 | if (tok[1].X_op != O_constant || !range_signed_16 (tok[1].X_add_number)) |
2048 | { | |
2049 | if (alpha_noat_on) | |
2050 | as_bad (_("macro requires $at register while noat in effect")); | |
252b5132 | 2051 | |
ea1562b3 NC |
2052 | lituse = load_expression (AXP_REG_AT, &tok[1], &basereg, &newtok[1]); |
2053 | } | |
2054 | else | |
2055 | { | |
2056 | newtok[1] = tok[1]; | |
2057 | lituse = 0; | |
2058 | } | |
43b4c25e | 2059 | |
ea1562b3 NC |
2060 | newtok[0] = tok[0]; |
2061 | set_tok_preg (newtok[2], basereg); | |
43b4c25e | 2062 | |
ea1562b3 | 2063 | assemble_tokens_to_insn ((const char *) opname, newtok, 3, &insn); |
43b4c25e | 2064 | |
ea1562b3 NC |
2065 | if (lituse) |
2066 | { | |
2067 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
2068 | insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE; | |
2069 | insn.fixups[insn.nfixups].exp.X_op = O_absent; | |
2070 | insn.nfixups++; | |
2071 | insn.sequence = lituse; | |
2072 | } | |
43b4c25e | 2073 | |
ea1562b3 NC |
2074 | emit_insn (&insn); |
2075 | } | |
43b4c25e | 2076 | |
ea1562b3 | 2077 | /* Load a half-word or byte as an unsigned value. */ |
43b4c25e | 2078 | |
ea1562b3 NC |
2079 | static void |
2080 | emit_ldXu (const expressionS *tok, | |
2081 | int ntok, | |
2082 | const void * vlgsize) | |
2083 | { | |
2084 | if (alpha_target & AXP_OPCODE_BWX) | |
2085 | emit_ir_load (tok, ntok, ldXu_op[(long) vlgsize]); | |
2086 | else | |
2087 | { | |
2088 | expressionS newtok[3]; | |
2089 | struct alpha_insn insn; | |
2090 | int basereg; | |
2091 | long lituse; | |
19f78583 | 2092 | |
ea1562b3 NC |
2093 | if (alpha_noat_on) |
2094 | as_bad (_("macro requires $at register while noat in effect")); | |
43b4c25e | 2095 | |
ea1562b3 NC |
2096 | if (ntok == 2) |
2097 | basereg = (tok[1].X_op == O_constant | |
2098 | ? AXP_REG_ZERO : alpha_gp_register); | |
2099 | else | |
2100 | basereg = tok[2].X_add_number; | |
3765b1be | 2101 | |
ea1562b3 NC |
2102 | /* Emit "lda $at, exp". */ |
2103 | lituse = load_expression (AXP_REG_AT, &tok[1], &basereg, NULL); | |
3765b1be | 2104 | |
ea1562b3 NC |
2105 | /* Emit "ldq_u targ, 0($at)". */ |
2106 | newtok[0] = tok[0]; | |
2107 | set_tok_const (newtok[1], 0); | |
2108 | set_tok_preg (newtok[2], basereg); | |
2109 | assemble_tokens_to_insn ("ldq_u", newtok, 3, &insn); | |
3765b1be | 2110 | |
ea1562b3 NC |
2111 | if (lituse) |
2112 | { | |
2113 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
2114 | insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE; | |
2115 | insn.fixups[insn.nfixups].exp.X_op = O_absent; | |
2116 | insn.nfixups++; | |
2117 | insn.sequence = lituse; | |
252b5132 | 2118 | } |
252b5132 | 2119 | |
ea1562b3 | 2120 | emit_insn (&insn); |
252b5132 | 2121 | |
ea1562b3 NC |
2122 | /* Emit "extXl targ, $at, targ". */ |
2123 | set_tok_reg (newtok[1], basereg); | |
2124 | newtok[2] = newtok[0]; | |
2125 | assemble_tokens_to_insn (extXl_op[(long) vlgsize], newtok, 3, &insn); | |
252b5132 | 2126 | |
ea1562b3 | 2127 | if (lituse) |
252b5132 | 2128 | { |
ea1562b3 NC |
2129 | assert (insn.nfixups < MAX_INSN_FIXUPS); |
2130 | insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BYTOFF; | |
2131 | insn.fixups[insn.nfixups].exp.X_op = O_absent; | |
2132 | insn.nfixups++; | |
2133 | insn.sequence = lituse; | |
252b5132 | 2134 | } |
ea1562b3 NC |
2135 | |
2136 | emit_insn (&insn); | |
252b5132 | 2137 | } |
252b5132 RH |
2138 | } |
2139 | ||
ea1562b3 | 2140 | /* Load a half-word or byte as a signed value. */ |
252b5132 RH |
2141 | |
2142 | static void | |
ea1562b3 NC |
2143 | emit_ldX (const expressionS *tok, |
2144 | int ntok, | |
2145 | const void * vlgsize) | |
252b5132 | 2146 | { |
ea1562b3 NC |
2147 | emit_ldXu (tok, ntok, vlgsize); |
2148 | assemble_tokens (sextX_op[(long) vlgsize], tok, 1, 1); | |
2149 | } | |
252b5132 | 2150 | |
ea1562b3 NC |
2151 | /* Load an integral value from an unaligned address as an unsigned |
2152 | value. */ | |
252b5132 RH |
2153 | |
2154 | static void | |
ea1562b3 NC |
2155 | emit_uldXu (const expressionS *tok, |
2156 | int ntok, | |
2157 | const void * vlgsize) | |
252b5132 | 2158 | { |
ea1562b3 | 2159 | long lgsize = (long) vlgsize; |
252b5132 | 2160 | expressionS newtok[3]; |
252b5132 | 2161 | |
ea1562b3 NC |
2162 | if (alpha_noat_on) |
2163 | as_bad (_("macro requires $at register while noat in effect")); | |
252b5132 | 2164 | |
ea1562b3 NC |
2165 | /* Emit "lda $at, exp". */ |
2166 | memcpy (newtok, tok, sizeof (expressionS) * ntok); | |
2167 | newtok[0].X_add_number = AXP_REG_AT; | |
2168 | assemble_tokens ("lda", newtok, ntok, 1); | |
2169 | ||
2170 | /* Emit "ldq_u $t9, 0($at)". */ | |
2171 | set_tok_reg (newtok[0], AXP_REG_T9); | |
252b5132 | 2172 | set_tok_const (newtok[1], 0); |
ea1562b3 NC |
2173 | set_tok_preg (newtok[2], AXP_REG_AT); |
2174 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
252b5132 | 2175 | |
ea1562b3 NC |
2176 | /* Emit "ldq_u $t10, size-1($at)". */ |
2177 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2178 | set_tok_const (newtok[1], (1 << lgsize) - 1); | |
2179 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
252b5132 | 2180 | |
ea1562b3 NC |
2181 | /* Emit "extXl $t9, $at, $t9". */ |
2182 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2183 | set_tok_reg (newtok[1], AXP_REG_AT); | |
2184 | set_tok_reg (newtok[2], AXP_REG_T9); | |
2185 | assemble_tokens (extXl_op[lgsize], newtok, 3, 1); | |
252b5132 | 2186 | |
ea1562b3 NC |
2187 | /* Emit "extXh $t10, $at, $t10". */ |
2188 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2189 | set_tok_reg (newtok[2], AXP_REG_T10); | |
2190 | assemble_tokens (extXh_op[lgsize], newtok, 3, 1); | |
252b5132 | 2191 | |
ea1562b3 NC |
2192 | /* Emit "or $t9, $t10, targ". */ |
2193 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2194 | set_tok_reg (newtok[1], AXP_REG_T10); | |
2195 | newtok[2] = tok[0]; | |
2196 | assemble_tokens ("or", newtok, 3, 1); | |
2197 | } | |
252b5132 | 2198 | |
ea1562b3 NC |
2199 | /* Load an integral value from an unaligned address as a signed value. |
2200 | Note that quads should get funneled to the unsigned load since we | |
2201 | don't have to do the sign extension. */ | |
252b5132 | 2202 | |
ea1562b3 NC |
2203 | static void |
2204 | emit_uldX (const expressionS *tok, | |
2205 | int ntok, | |
2206 | const void * vlgsize) | |
2207 | { | |
2208 | emit_uldXu (tok, ntok, vlgsize); | |
2209 | assemble_tokens (sextX_op[(long) vlgsize], tok, 1, 1); | |
2210 | } | |
252b5132 | 2211 | |
ea1562b3 | 2212 | /* Implement the ldil macro. */ |
252b5132 | 2213 | |
ea1562b3 NC |
2214 | static void |
2215 | emit_ldil (const expressionS *tok, | |
2216 | int ntok, | |
2217 | const void * unused ATTRIBUTE_UNUSED) | |
2218 | { | |
2219 | expressionS newtok[2]; | |
252b5132 | 2220 | |
ea1562b3 NC |
2221 | memcpy (newtok, tok, sizeof (newtok)); |
2222 | newtok[1].X_add_number = sign_extend_32 (tok[1].X_add_number); | |
252b5132 | 2223 | |
ea1562b3 | 2224 | assemble_tokens ("lda", newtok, ntok, 1); |
252b5132 RH |
2225 | } |
2226 | ||
ea1562b3 | 2227 | /* Store a half-word or byte. */ |
252b5132 | 2228 | |
ea1562b3 NC |
2229 | static void |
2230 | emit_stX (const expressionS *tok, | |
2231 | int ntok, | |
2232 | const void * vlgsize) | |
252b5132 | 2233 | { |
ea1562b3 | 2234 | int lgsize = (int) (long) vlgsize; |
252b5132 | 2235 | |
ea1562b3 NC |
2236 | if (alpha_target & AXP_OPCODE_BWX) |
2237 | emit_loadstore (tok, ntok, stX_op[lgsize]); | |
2238 | else | |
2239 | { | |
2240 | expressionS newtok[3]; | |
2241 | struct alpha_insn insn; | |
2242 | int basereg; | |
2243 | long lituse; | |
252b5132 | 2244 | |
ea1562b3 NC |
2245 | if (alpha_noat_on) |
2246 | as_bad (_("macro requires $at register while noat in effect")); | |
252b5132 | 2247 | |
ea1562b3 NC |
2248 | if (ntok == 2) |
2249 | basereg = (tok[1].X_op == O_constant | |
2250 | ? AXP_REG_ZERO : alpha_gp_register); | |
2251 | else | |
2252 | basereg = tok[2].X_add_number; | |
252b5132 | 2253 | |
ea1562b3 NC |
2254 | /* Emit "lda $at, exp". */ |
2255 | lituse = load_expression (AXP_REG_AT, &tok[1], &basereg, NULL); | |
252b5132 | 2256 | |
ea1562b3 NC |
2257 | /* Emit "ldq_u $t9, 0($at)". */ |
2258 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2259 | set_tok_const (newtok[1], 0); | |
2260 | set_tok_preg (newtok[2], basereg); | |
2261 | assemble_tokens_to_insn ("ldq_u", newtok, 3, &insn); | |
252b5132 | 2262 | |
ea1562b3 NC |
2263 | if (lituse) |
2264 | { | |
2265 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
2266 | insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE; | |
2267 | insn.fixups[insn.nfixups].exp.X_op = O_absent; | |
2268 | insn.nfixups++; | |
2269 | insn.sequence = lituse; | |
2270 | } | |
252b5132 | 2271 | |
ea1562b3 | 2272 | emit_insn (&insn); |
252b5132 | 2273 | |
ea1562b3 NC |
2274 | /* Emit "insXl src, $at, $t10". */ |
2275 | newtok[0] = tok[0]; | |
2276 | set_tok_reg (newtok[1], basereg); | |
2277 | set_tok_reg (newtok[2], AXP_REG_T10); | |
2278 | assemble_tokens_to_insn (insXl_op[lgsize], newtok, 3, &insn); | |
252b5132 | 2279 | |
ea1562b3 NC |
2280 | if (lituse) |
2281 | { | |
2282 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
2283 | insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BYTOFF; | |
2284 | insn.fixups[insn.nfixups].exp.X_op = O_absent; | |
2285 | insn.nfixups++; | |
2286 | insn.sequence = lituse; | |
2287 | } | |
252b5132 | 2288 | |
ea1562b3 | 2289 | emit_insn (&insn); |
252b5132 | 2290 | |
ea1562b3 NC |
2291 | /* Emit "mskXl $t9, $at, $t9". */ |
2292 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2293 | newtok[2] = newtok[0]; | |
2294 | assemble_tokens_to_insn (mskXl_op[lgsize], newtok, 3, &insn); | |
43b4c25e | 2295 | |
ea1562b3 NC |
2296 | if (lituse) |
2297 | { | |
2298 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
2299 | insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BYTOFF; | |
2300 | insn.fixups[insn.nfixups].exp.X_op = O_absent; | |
2301 | insn.nfixups++; | |
2302 | insn.sequence = lituse; | |
2303 | } | |
252b5132 | 2304 | |
ea1562b3 | 2305 | emit_insn (&insn); |
252b5132 | 2306 | |
ea1562b3 NC |
2307 | /* Emit "or $t9, $t10, $t9". */ |
2308 | set_tok_reg (newtok[1], AXP_REG_T10); | |
2309 | assemble_tokens ("or", newtok, 3, 1); | |
252b5132 | 2310 | |
ea1562b3 NC |
2311 | /* Emit "stq_u $t9, 0($at). */ |
2312 | set_tok_const(newtok[1], 0); | |
2313 | set_tok_preg (newtok[2], AXP_REG_AT); | |
2314 | assemble_tokens_to_insn ("stq_u", newtok, 3, &insn); | |
252b5132 | 2315 | |
ea1562b3 NC |
2316 | if (lituse) |
2317 | { | |
2318 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
2319 | insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_BASE; | |
2320 | insn.fixups[insn.nfixups].exp.X_op = O_absent; | |
2321 | insn.nfixups++; | |
2322 | insn.sequence = lituse; | |
2323 | } | |
252b5132 | 2324 | |
ea1562b3 NC |
2325 | emit_insn (&insn); |
2326 | } | |
2327 | } | |
252b5132 | 2328 | |
ea1562b3 | 2329 | /* Store an integer to an unaligned address. */ |
252b5132 | 2330 | |
ea1562b3 NC |
2331 | static void |
2332 | emit_ustX (const expressionS *tok, | |
2333 | int ntok, | |
2334 | const void * vlgsize) | |
2335 | { | |
2336 | int lgsize = (int) (long) vlgsize; | |
2337 | expressionS newtok[3]; | |
252b5132 | 2338 | |
ea1562b3 NC |
2339 | /* Emit "lda $at, exp". */ |
2340 | memcpy (newtok, tok, sizeof (expressionS) * ntok); | |
2341 | newtok[0].X_add_number = AXP_REG_AT; | |
2342 | assemble_tokens ("lda", newtok, ntok, 1); | |
252b5132 | 2343 | |
ea1562b3 NC |
2344 | /* Emit "ldq_u $9, 0($at)". */ |
2345 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2346 | set_tok_const (newtok[1], 0); | |
2347 | set_tok_preg (newtok[2], AXP_REG_AT); | |
2348 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
252b5132 | 2349 | |
ea1562b3 NC |
2350 | /* Emit "ldq_u $10, size-1($at)". */ |
2351 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2352 | set_tok_const (newtok[1], (1 << lgsize) - 1); | |
2353 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
252b5132 | 2354 | |
ea1562b3 NC |
2355 | /* Emit "insXl src, $at, $t11". */ |
2356 | newtok[0] = tok[0]; | |
2357 | set_tok_reg (newtok[1], AXP_REG_AT); | |
2358 | set_tok_reg (newtok[2], AXP_REG_T11); | |
2359 | assemble_tokens (insXl_op[lgsize], newtok, 3, 1); | |
252b5132 | 2360 | |
ea1562b3 NC |
2361 | /* Emit "insXh src, $at, $t12". */ |
2362 | set_tok_reg (newtok[2], AXP_REG_T12); | |
2363 | assemble_tokens (insXh_op[lgsize], newtok, 3, 1); | |
252b5132 | 2364 | |
ea1562b3 NC |
2365 | /* Emit "mskXl $t9, $at, $t9". */ |
2366 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2367 | newtok[2] = newtok[0]; | |
2368 | assemble_tokens (mskXl_op[lgsize], newtok, 3, 1); | |
252b5132 | 2369 | |
ea1562b3 NC |
2370 | /* Emit "mskXh $t10, $at, $t10". */ |
2371 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2372 | newtok[2] = newtok[0]; | |
2373 | assemble_tokens (mskXh_op[lgsize], newtok, 3, 1); | |
252b5132 | 2374 | |
ea1562b3 NC |
2375 | /* Emit "or $t9, $t11, $t9". */ |
2376 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2377 | set_tok_reg (newtok[1], AXP_REG_T11); | |
2378 | newtok[2] = newtok[0]; | |
2379 | assemble_tokens ("or", newtok, 3, 1); | |
252b5132 | 2380 | |
ea1562b3 NC |
2381 | /* Emit "or $t10, $t12, $t10". */ |
2382 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2383 | set_tok_reg (newtok[1], AXP_REG_T12); | |
2384 | newtok[2] = newtok[0]; | |
2385 | assemble_tokens ("or", newtok, 3, 1); | |
252b5132 | 2386 | |
ea1562b3 NC |
2387 | /* Emit "stq_u $t10, size-1($at)". */ |
2388 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2389 | set_tok_const (newtok[1], (1 << lgsize) - 1); | |
af1c1010 NC |
2390 | set_tok_preg (newtok[2], AXP_REG_AT); |
2391 | assemble_tokens ("stq_u", newtok, 3, 1); | |
2392 | ||
2393 | /* Emit "stq_u $t9, 0($at)". */ | |
2394 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2395 | set_tok_const (newtok[1], 0); | |
ea1562b3 NC |
2396 | assemble_tokens ("stq_u", newtok, 3, 1); |
2397 | } | |
252b5132 | 2398 | |
ea1562b3 NC |
2399 | /* Sign extend a half-word or byte. The 32-bit sign extend is |
2400 | implemented as "addl $31, $r, $t" in the opcode table. */ | |
252b5132 | 2401 | |
ea1562b3 NC |
2402 | static void |
2403 | emit_sextX (const expressionS *tok, | |
2404 | int ntok, | |
2405 | const void * vlgsize) | |
2406 | { | |
2407 | long lgsize = (long) vlgsize; | |
252b5132 | 2408 | |
ea1562b3 NC |
2409 | if (alpha_target & AXP_OPCODE_BWX) |
2410 | assemble_tokens (sextX_op[lgsize], tok, ntok, 0); | |
2411 | else | |
2412 | { | |
2413 | int bitshift = 64 - 8 * (1 << lgsize); | |
2414 | expressionS newtok[3]; | |
252b5132 | 2415 | |
ea1562b3 NC |
2416 | /* Emit "sll src,bits,dst". */ |
2417 | newtok[0] = tok[0]; | |
2418 | set_tok_const (newtok[1], bitshift); | |
2419 | newtok[2] = tok[ntok - 1]; | |
2420 | assemble_tokens ("sll", newtok, 3, 1); | |
252b5132 | 2421 | |
ea1562b3 NC |
2422 | /* Emit "sra dst,bits,dst". */ |
2423 | newtok[0] = newtok[2]; | |
2424 | assemble_tokens ("sra", newtok, 3, 1); | |
252b5132 | 2425 | } |
ea1562b3 | 2426 | } |
252b5132 | 2427 | |
ea1562b3 | 2428 | /* Implement the division and modulus macros. */ |
252b5132 RH |
2429 | |
2430 | #ifdef OBJ_EVAX | |
252b5132 | 2431 | |
ea1562b3 NC |
2432 | /* Make register usage like in normal procedure call. |
2433 | Don't clobber PV and RA. */ | |
252b5132 | 2434 | |
ea1562b3 NC |
2435 | static void |
2436 | emit_division (const expressionS *tok, | |
2437 | int ntok, | |
2438 | const void * symname) | |
2439 | { | |
2440 | /* DIVISION and MODULUS. Yech. | |
252b5132 | 2441 | |
ea1562b3 NC |
2442 | Convert |
2443 | OP x,y,result | |
2444 | to | |
2445 | mov x,R16 # if x != R16 | |
2446 | mov y,R17 # if y != R17 | |
2447 | lda AT,__OP | |
2448 | jsr AT,(AT),0 | |
2449 | mov R0,result | |
252b5132 | 2450 | |
ea1562b3 NC |
2451 | with appropriate optimizations if R0,R16,R17 are the registers |
2452 | specified by the compiler. */ | |
252b5132 | 2453 | |
ea1562b3 NC |
2454 | int xr, yr, rr; |
2455 | symbolS *sym; | |
2456 | expressionS newtok[3]; | |
252b5132 | 2457 | |
ea1562b3 NC |
2458 | xr = regno (tok[0].X_add_number); |
2459 | yr = regno (tok[1].X_add_number); | |
252b5132 | 2460 | |
ea1562b3 NC |
2461 | if (ntok < 3) |
2462 | rr = xr; | |
2463 | else | |
2464 | rr = regno (tok[2].X_add_number); | |
252b5132 | 2465 | |
ea1562b3 NC |
2466 | /* Move the operands into the right place. */ |
2467 | if (yr == AXP_REG_R16 && xr == AXP_REG_R17) | |
2468 | { | |
2469 | /* They are in exactly the wrong order -- swap through AT. */ | |
2470 | if (alpha_noat_on) | |
2471 | as_bad (_("macro requires $at register while noat in effect")); | |
252b5132 | 2472 | |
ea1562b3 NC |
2473 | set_tok_reg (newtok[0], AXP_REG_R16); |
2474 | set_tok_reg (newtok[1], AXP_REG_AT); | |
2475 | assemble_tokens ("mov", newtok, 2, 1); | |
252b5132 | 2476 | |
ea1562b3 NC |
2477 | set_tok_reg (newtok[0], AXP_REG_R17); |
2478 | set_tok_reg (newtok[1], AXP_REG_R16); | |
2479 | assemble_tokens ("mov", newtok, 2, 1); | |
252b5132 | 2480 | |
ea1562b3 NC |
2481 | set_tok_reg (newtok[0], AXP_REG_AT); |
2482 | set_tok_reg (newtok[1], AXP_REG_R17); | |
2483 | assemble_tokens ("mov", newtok, 2, 1); | |
252b5132 RH |
2484 | } |
2485 | else | |
2486 | { | |
ea1562b3 | 2487 | if (yr == AXP_REG_R16) |
252b5132 | 2488 | { |
ea1562b3 NC |
2489 | set_tok_reg (newtok[0], AXP_REG_R16); |
2490 | set_tok_reg (newtok[1], AXP_REG_R17); | |
2491 | assemble_tokens ("mov", newtok, 2, 1); | |
252b5132 RH |
2492 | } |
2493 | ||
ea1562b3 | 2494 | if (xr != AXP_REG_R16) |
252b5132 | 2495 | { |
ea1562b3 NC |
2496 | set_tok_reg (newtok[0], xr); |
2497 | set_tok_reg (newtok[1], AXP_REG_R16); | |
2498 | assemble_tokens ("mov", newtok, 2, 1); | |
252b5132 RH |
2499 | } |
2500 | ||
ea1562b3 | 2501 | if (yr != AXP_REG_R16 && yr != AXP_REG_R17) |
252b5132 | 2502 | { |
ea1562b3 NC |
2503 | set_tok_reg (newtok[0], yr); |
2504 | set_tok_reg (newtok[1], AXP_REG_R17); | |
2505 | assemble_tokens ("mov", newtok, 2, 1); | |
252b5132 | 2506 | } |
252b5132 RH |
2507 | } |
2508 | ||
ea1562b3 | 2509 | sym = symbol_find_or_make ((const char *) symname); |
252b5132 | 2510 | |
ea1562b3 NC |
2511 | set_tok_reg (newtok[0], AXP_REG_AT); |
2512 | set_tok_sym (newtok[1], sym, 0); | |
2513 | assemble_tokens ("lda", newtok, 2, 1); | |
252b5132 | 2514 | |
ea1562b3 NC |
2515 | /* Call the division routine. */ |
2516 | set_tok_reg (newtok[0], AXP_REG_AT); | |
2517 | set_tok_cpreg (newtok[1], AXP_REG_AT); | |
2518 | set_tok_const (newtok[2], 0); | |
2519 | assemble_tokens ("jsr", newtok, 3, 1); | |
252b5132 | 2520 | |
ea1562b3 NC |
2521 | /* Move the result to the right place. */ |
2522 | if (rr != AXP_REG_R0) | |
2523 | { | |
2524 | set_tok_reg (newtok[0], AXP_REG_R0); | |
2525 | set_tok_reg (newtok[1], rr); | |
2526 | assemble_tokens ("mov", newtok, 2, 1); | |
2527 | } | |
252b5132 RH |
2528 | } |
2529 | ||
ea1562b3 | 2530 | #else /* !OBJ_EVAX */ |
252b5132 RH |
2531 | |
2532 | static void | |
ea1562b3 NC |
2533 | emit_division (const expressionS *tok, |
2534 | int ntok, | |
2535 | const void * symname) | |
252b5132 | 2536 | { |
ea1562b3 NC |
2537 | /* DIVISION and MODULUS. Yech. |
2538 | Convert | |
2539 | OP x,y,result | |
2540 | to | |
2541 | lda pv,__OP | |
2542 | mov x,t10 | |
2543 | mov y,t11 | |
2544 | jsr t9,(pv),__OP | |
2545 | mov t12,result | |
252b5132 | 2546 | |
ea1562b3 NC |
2547 | with appropriate optimizations if t10,t11,t12 are the registers |
2548 | specified by the compiler. */ | |
252b5132 | 2549 | |
ea1562b3 NC |
2550 | int xr, yr, rr; |
2551 | symbolS *sym; | |
252b5132 | 2552 | expressionS newtok[3]; |
252b5132 | 2553 | |
ea1562b3 NC |
2554 | xr = regno (tok[0].X_add_number); |
2555 | yr = regno (tok[1].X_add_number); | |
252b5132 | 2556 | |
ea1562b3 NC |
2557 | if (ntok < 3) |
2558 | rr = xr; | |
2559 | else | |
2560 | rr = regno (tok[2].X_add_number); | |
252b5132 | 2561 | |
ea1562b3 | 2562 | sym = symbol_find_or_make ((const char *) symname); |
252b5132 | 2563 | |
ea1562b3 NC |
2564 | /* Move the operands into the right place. */ |
2565 | if (yr == AXP_REG_T10 && xr == AXP_REG_T11) | |
252b5132 | 2566 | { |
ea1562b3 NC |
2567 | /* They are in exactly the wrong order -- swap through AT. */ |
2568 | if (alpha_noat_on) | |
2569 | as_bad (_("macro requires $at register while noat in effect")); | |
252b5132 | 2570 | |
ea1562b3 NC |
2571 | set_tok_reg (newtok[0], AXP_REG_T10); |
2572 | set_tok_reg (newtok[1], AXP_REG_AT); | |
2573 | assemble_tokens ("mov", newtok, 2, 1); | |
252b5132 | 2574 | |
ea1562b3 NC |
2575 | set_tok_reg (newtok[0], AXP_REG_T11); |
2576 | set_tok_reg (newtok[1], AXP_REG_T10); | |
2577 | assemble_tokens ("mov", newtok, 2, 1); | |
252b5132 | 2578 | |
ea1562b3 NC |
2579 | set_tok_reg (newtok[0], AXP_REG_AT); |
2580 | set_tok_reg (newtok[1], AXP_REG_T11); | |
2581 | assemble_tokens ("mov", newtok, 2, 1); | |
2582 | } | |
2583 | else | |
2584 | { | |
2585 | if (yr == AXP_REG_T10) | |
2586 | { | |
2587 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2588 | set_tok_reg (newtok[1], AXP_REG_T11); | |
2589 | assemble_tokens ("mov", newtok, 2, 1); | |
2590 | } | |
2591 | ||
2592 | if (xr != AXP_REG_T10) | |
2593 | { | |
2594 | set_tok_reg (newtok[0], xr); | |
2595 | set_tok_reg (newtok[1], AXP_REG_T10); | |
2596 | assemble_tokens ("mov", newtok, 2, 1); | |
2597 | } | |
2598 | ||
2599 | if (yr != AXP_REG_T10 && yr != AXP_REG_T11) | |
2600 | { | |
2601 | set_tok_reg (newtok[0], yr); | |
2602 | set_tok_reg (newtok[1], AXP_REG_T11); | |
2603 | assemble_tokens ("mov", newtok, 2, 1); | |
2604 | } | |
2605 | } | |
2606 | ||
2607 | /* Call the division routine. */ | |
2608 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2609 | set_tok_sym (newtok[1], sym, 0); | |
2610 | assemble_tokens ("jsr", newtok, 2, 1); | |
2611 | ||
2612 | /* Reload the GP register. */ | |
2613 | #ifdef OBJ_AOUT | |
2614 | FIXME | |
2615 | #endif | |
2616 | #if defined(OBJ_ECOFF) || defined(OBJ_ELF) | |
2617 | set_tok_reg (newtok[0], alpha_gp_register); | |
2618 | set_tok_const (newtok[1], 0); | |
2619 | set_tok_preg (newtok[2], AXP_REG_T9); | |
2620 | assemble_tokens ("ldgp", newtok, 3, 1); | |
2621 | #endif | |
2622 | ||
2623 | /* Move the result to the right place. */ | |
2624 | if (rr != AXP_REG_T12) | |
2625 | { | |
2626 | set_tok_reg (newtok[0], AXP_REG_T12); | |
2627 | set_tok_reg (newtok[1], rr); | |
2628 | assemble_tokens ("mov", newtok, 2, 1); | |
2629 | } | |
2630 | } | |
2631 | ||
2632 | #endif /* !OBJ_EVAX */ | |
2633 | ||
2634 | /* The jsr and jmp macros differ from their instruction counterparts | |
2635 | in that they can load the target address and default most | |
2636 | everything. */ | |
2637 | ||
2638 | static void | |
2639 | emit_jsrjmp (const expressionS *tok, | |
2640 | int ntok, | |
2641 | const void * vopname) | |
252b5132 | 2642 | { |
ea1562b3 | 2643 | const char *opname = (const char *) vopname; |
252b5132 | 2644 | struct alpha_insn insn; |
ea1562b3 NC |
2645 | expressionS newtok[3]; |
2646 | int r, tokidx = 0; | |
2647 | long lituse = 0; | |
252b5132 | 2648 | |
ea1562b3 NC |
2649 | if (tokidx < ntok && tok[tokidx].X_op == O_register) |
2650 | r = regno (tok[tokidx++].X_add_number); | |
252b5132 | 2651 | else |
ea1562b3 | 2652 | r = strcmp (opname, "jmp") == 0 ? AXP_REG_ZERO : AXP_REG_RA; |
252b5132 | 2653 | |
ea1562b3 | 2654 | set_tok_reg (newtok[0], r); |
252b5132 | 2655 | |
ea1562b3 NC |
2656 | if (tokidx < ntok && |
2657 | (tok[tokidx].X_op == O_pregister || tok[tokidx].X_op == O_cpregister)) | |
2658 | r = regno (tok[tokidx++].X_add_number); | |
2659 | #ifdef OBJ_EVAX | |
2660 | /* Keep register if jsr $n.<sym>. */ | |
2661 | #else | |
252b5132 RH |
2662 | else |
2663 | { | |
ea1562b3 NC |
2664 | int basereg = alpha_gp_register; |
2665 | lituse = load_expression (r = AXP_REG_PV, &tok[tokidx], &basereg, NULL); | |
252b5132 | 2666 | } |
ea1562b3 | 2667 | #endif |
252b5132 | 2668 | |
ea1562b3 | 2669 | set_tok_cpreg (newtok[1], r); |
252b5132 | 2670 | |
ea1562b3 NC |
2671 | #ifdef OBJ_EVAX |
2672 | /* FIXME: Add hint relocs to BFD for evax. */ | |
2673 | #else | |
2674 | if (tokidx < ntok) | |
2675 | newtok[2] = tok[tokidx]; | |
2676 | else | |
2677 | #endif | |
2678 | set_tok_const (newtok[2], 0); | |
2679 | ||
2680 | assemble_tokens_to_insn (opname, newtok, 3, &insn); | |
252b5132 RH |
2681 | |
2682 | if (lituse) | |
2683 | { | |
2684 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
ea1562b3 | 2685 | insn.fixups[insn.nfixups].reloc = DUMMY_RELOC_LITUSE_JSR; |
19f78583 | 2686 | insn.fixups[insn.nfixups].exp.X_op = O_absent; |
252b5132 | 2687 | insn.nfixups++; |
19f78583 | 2688 | insn.sequence = lituse; |
252b5132 RH |
2689 | } |
2690 | ||
2691 | emit_insn (&insn); | |
2692 | } | |
2693 | ||
ea1562b3 NC |
2694 | /* The ret and jcr instructions differ from their instruction |
2695 | counterparts in that everything can be defaulted. */ | |
252b5132 RH |
2696 | |
2697 | static void | |
ea1562b3 NC |
2698 | emit_retjcr (const expressionS *tok, |
2699 | int ntok, | |
2700 | const void * vopname) | |
252b5132 | 2701 | { |
ea1562b3 NC |
2702 | const char *opname = (const char *) vopname; |
2703 | expressionS newtok[3]; | |
2704 | int r, tokidx = 0; | |
252b5132 | 2705 | |
ea1562b3 NC |
2706 | if (tokidx < ntok && tok[tokidx].X_op == O_register) |
2707 | r = regno (tok[tokidx++].X_add_number); | |
2708 | else | |
2709 | r = AXP_REG_ZERO; | |
252b5132 | 2710 | |
ea1562b3 | 2711 | set_tok_reg (newtok[0], r); |
19f78583 | 2712 | |
ea1562b3 NC |
2713 | if (tokidx < ntok && |
2714 | (tok[tokidx].X_op == O_pregister || tok[tokidx].X_op == O_cpregister)) | |
2715 | r = regno (tok[tokidx++].X_add_number); | |
2716 | else | |
2717 | r = AXP_REG_RA; | |
19f78583 | 2718 | |
ea1562b3 | 2719 | set_tok_cpreg (newtok[1], r); |
252b5132 | 2720 | |
ea1562b3 NC |
2721 | if (tokidx < ntok) |
2722 | newtok[2] = tok[tokidx]; | |
2723 | else | |
2724 | set_tok_const (newtok[2], strcmp (opname, "ret") == 0); | |
252b5132 | 2725 | |
ea1562b3 | 2726 | assemble_tokens (opname, newtok, 3, 0); |
252b5132 RH |
2727 | } |
2728 | ||
ea1562b3 | 2729 | /* Implement the ldgp macro. */ |
252b5132 RH |
2730 | |
2731 | static void | |
ea1562b3 NC |
2732 | emit_ldgp (const expressionS *tok, |
2733 | int ntok ATTRIBUTE_UNUSED, | |
2734 | const void * unused ATTRIBUTE_UNUSED) | |
252b5132 | 2735 | { |
ea1562b3 NC |
2736 | #ifdef OBJ_AOUT |
2737 | FIXME | |
2738 | #endif | |
2739 | #if defined(OBJ_ECOFF) || defined(OBJ_ELF) | |
2740 | /* from "ldgp r1,n(r2)", generate "ldah r1,X(R2); lda r1,Y(r1)" | |
2741 | with appropriate constants and relocations. */ | |
2742 | struct alpha_insn insn; | |
252b5132 | 2743 | expressionS newtok[3]; |
ea1562b3 | 2744 | expressionS addend; |
252b5132 | 2745 | |
ea1562b3 NC |
2746 | #ifdef OBJ_ECOFF |
2747 | if (regno (tok[2].X_add_number) == AXP_REG_PV) | |
2748 | ecoff_set_gp_prolog_size (0); | |
2749 | #endif | |
252b5132 | 2750 | |
ea1562b3 NC |
2751 | newtok[0] = tok[0]; |
2752 | set_tok_const (newtok[1], 0); | |
2753 | newtok[2] = tok[2]; | |
252b5132 | 2754 | |
ea1562b3 | 2755 | assemble_tokens_to_insn ("ldah", newtok, 3, &insn); |
252b5132 | 2756 | |
ea1562b3 | 2757 | addend = tok[1]; |
252b5132 | 2758 | |
ea1562b3 NC |
2759 | #ifdef OBJ_ECOFF |
2760 | if (addend.X_op != O_constant) | |
2761 | as_bad (_("can not resolve expression")); | |
2762 | addend.X_op = O_symbol; | |
2763 | addend.X_add_symbol = alpha_gp_symbol; | |
2764 | #endif | |
252b5132 | 2765 | |
ea1562b3 NC |
2766 | insn.nfixups = 1; |
2767 | insn.fixups[0].exp = addend; | |
2768 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_GPDISP_HI16; | |
2769 | insn.sequence = next_sequence_num; | |
252b5132 | 2770 | |
ea1562b3 | 2771 | emit_insn (&insn); |
252b5132 | 2772 | |
ea1562b3 | 2773 | set_tok_preg (newtok[2], tok[0].X_add_number); |
252b5132 | 2774 | |
ea1562b3 | 2775 | assemble_tokens_to_insn ("lda", newtok, 3, &insn); |
252b5132 | 2776 | |
ea1562b3 NC |
2777 | #ifdef OBJ_ECOFF |
2778 | addend.X_add_number += 4; | |
2779 | #endif | |
252b5132 | 2780 | |
ea1562b3 NC |
2781 | insn.nfixups = 1; |
2782 | insn.fixups[0].exp = addend; | |
2783 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_GPDISP_LO16; | |
2784 | insn.sequence = next_sequence_num--; | |
252b5132 | 2785 | |
ea1562b3 NC |
2786 | emit_insn (&insn); |
2787 | #endif /* OBJ_ECOFF || OBJ_ELF */ | |
252b5132 RH |
2788 | } |
2789 | ||
ea1562b3 | 2790 | /* The macro table. */ |
252b5132 | 2791 | |
ea1562b3 | 2792 | static const struct alpha_macro alpha_macros[] = |
252b5132 | 2793 | { |
ea1562b3 NC |
2794 | /* Load/Store macros. */ |
2795 | { "lda", emit_lda, NULL, | |
2796 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2797 | { "ldah", emit_ldah, NULL, | |
2798 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
252b5132 | 2799 | |
ea1562b3 NC |
2800 | { "ldl", emit_ir_load, "ldl", |
2801 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2802 | { "ldl_l", emit_ir_load, "ldl_l", | |
2803 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2804 | { "ldq", emit_ir_load, "ldq", | |
2805 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2806 | { "ldq_l", emit_ir_load, "ldq_l", | |
2807 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2808 | { "ldq_u", emit_ir_load, "ldq_u", | |
2809 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2810 | { "ldf", emit_loadstore, "ldf", | |
2811 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2812 | { "ldg", emit_loadstore, "ldg", | |
2813 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2814 | { "lds", emit_loadstore, "lds", | |
2815 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2816 | { "ldt", emit_loadstore, "ldt", | |
2817 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
252b5132 | 2818 | |
ea1562b3 NC |
2819 | { "ldb", emit_ldX, (void *) 0, |
2820 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2821 | { "ldbu", emit_ldXu, (void *) 0, | |
2822 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2823 | { "ldw", emit_ldX, (void *) 1, | |
2824 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2825 | { "ldwu", emit_ldXu, (void *) 1, | |
2826 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
252b5132 | 2827 | |
ea1562b3 NC |
2828 | { "uldw", emit_uldX, (void *) 1, |
2829 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2830 | { "uldwu", emit_uldXu, (void *) 1, | |
2831 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2832 | { "uldl", emit_uldX, (void *) 2, | |
2833 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2834 | { "uldlu", emit_uldXu, (void *) 2, | |
2835 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2836 | { "uldq", emit_uldXu, (void *) 3, | |
2837 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
252b5132 | 2838 | |
ea1562b3 NC |
2839 | { "ldgp", emit_ldgp, NULL, |
2840 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA } }, | |
252b5132 | 2841 | |
ea1562b3 NC |
2842 | { "ldi", emit_lda, NULL, |
2843 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
2844 | { "ldil", emit_ldil, NULL, | |
2845 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
2846 | { "ldiq", emit_lda, NULL, | |
2847 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
252b5132 | 2848 | |
ea1562b3 NC |
2849 | { "stl", emit_loadstore, "stl", |
2850 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2851 | { "stl_c", emit_loadstore, "stl_c", | |
2852 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2853 | { "stq", emit_loadstore, "stq", | |
2854 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2855 | { "stq_c", emit_loadstore, "stq_c", | |
2856 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2857 | { "stq_u", emit_loadstore, "stq_u", | |
2858 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2859 | { "stf", emit_loadstore, "stf", | |
2860 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2861 | { "stg", emit_loadstore, "stg", | |
2862 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2863 | { "sts", emit_loadstore, "sts", | |
2864 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2865 | { "stt", emit_loadstore, "stt", | |
2866 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
252b5132 | 2867 | |
ea1562b3 NC |
2868 | { "stb", emit_stX, (void *) 0, |
2869 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2870 | { "stw", emit_stX, (void *) 1, | |
2871 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2872 | { "ustw", emit_ustX, (void *) 1, | |
2873 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2874 | { "ustl", emit_ustX, (void *) 2, | |
2875 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
2876 | { "ustq", emit_ustX, (void *) 3, | |
2877 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_EOA } }, | |
252b5132 | 2878 | |
ea1562b3 | 2879 | /* Arithmetic macros. */ |
19f78583 | 2880 | |
ea1562b3 NC |
2881 | { "sextb", emit_sextX, (void *) 0, |
2882 | { MACRO_IR, MACRO_IR, MACRO_EOA, | |
2883 | MACRO_IR, MACRO_EOA, | |
2884 | /* MACRO_EXP, MACRO_IR, MACRO_EOA */ } }, | |
2885 | { "sextw", emit_sextX, (void *) 1, | |
2886 | { MACRO_IR, MACRO_IR, MACRO_EOA, | |
2887 | MACRO_IR, MACRO_EOA, | |
2888 | /* MACRO_EXP, MACRO_IR, MACRO_EOA */ } }, | |
252b5132 | 2889 | |
ea1562b3 NC |
2890 | { "divl", emit_division, "__divl", |
2891 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
2892 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
2893 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
2894 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
2895 | { "divlu", emit_division, "__divlu", | |
2896 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
2897 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
2898 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
2899 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
2900 | { "divq", emit_division, "__divq", | |
2901 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
2902 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
2903 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
2904 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
2905 | { "divqu", emit_division, "__divqu", | |
2906 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
2907 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
2908 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
2909 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
2910 | { "reml", emit_division, "__reml", | |
2911 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
2912 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
2913 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
2914 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
2915 | { "remlu", emit_division, "__remlu", | |
2916 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
2917 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
2918 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
2919 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
2920 | { "remq", emit_division, "__remq", | |
2921 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
2922 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
2923 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
2924 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
2925 | { "remqu", emit_division, "__remqu", | |
2926 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
2927 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
2928 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
2929 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
252b5132 | 2930 | |
ea1562b3 NC |
2931 | { "jsr", emit_jsrjmp, "jsr", |
2932 | { MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
2933 | MACRO_PIR, MACRO_EOA, | |
2934 | MACRO_IR, MACRO_EXP, MACRO_EOA, | |
2935 | MACRO_EXP, MACRO_EOA } }, | |
2936 | { "jmp", emit_jsrjmp, "jmp", | |
2937 | { MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
2938 | MACRO_PIR, MACRO_EOA, | |
2939 | MACRO_IR, MACRO_EXP, MACRO_EOA, | |
2940 | MACRO_EXP, MACRO_EOA } }, | |
2941 | { "ret", emit_retjcr, "ret", | |
2942 | { MACRO_IR, MACRO_EXP, MACRO_EOA, | |
2943 | MACRO_IR, MACRO_EOA, | |
2944 | MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
2945 | MACRO_PIR, MACRO_EOA, | |
2946 | MACRO_EXP, MACRO_EOA, | |
2947 | MACRO_EOA } }, | |
2948 | { "jcr", emit_retjcr, "jcr", | |
2949 | { MACRO_IR, MACRO_EXP, MACRO_EOA, | |
2950 | MACRO_IR, MACRO_EOA, | |
2951 | MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
2952 | MACRO_PIR, MACRO_EOA, | |
2953 | MACRO_EXP, MACRO_EOA, | |
2954 | MACRO_EOA } }, | |
2955 | { "jsr_coroutine", emit_retjcr, "jcr", | |
2956 | { MACRO_IR, MACRO_EXP, MACRO_EOA, | |
2957 | MACRO_IR, MACRO_EOA, | |
2958 | MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
2959 | MACRO_PIR, MACRO_EOA, | |
2960 | MACRO_EXP, MACRO_EOA, | |
2961 | MACRO_EOA } }, | |
2962 | }; | |
252b5132 | 2963 | |
ea1562b3 NC |
2964 | static const unsigned int alpha_num_macros |
2965 | = sizeof (alpha_macros) / sizeof (*alpha_macros); | |
19f78583 | 2966 | |
ea1562b3 NC |
2967 | /* Search forward through all variants of a macro looking for a syntax |
2968 | match. */ | |
19f78583 | 2969 | |
ea1562b3 NC |
2970 | static const struct alpha_macro * |
2971 | find_macro_match (const struct alpha_macro *first_macro, | |
2972 | const expressionS *tok, | |
2973 | int *pntok) | |
252b5132 | 2974 | |
ea1562b3 NC |
2975 | { |
2976 | const struct alpha_macro *macro = first_macro; | |
2977 | int ntok = *pntok; | |
252b5132 | 2978 | |
ea1562b3 NC |
2979 | do |
2980 | { | |
2981 | const enum alpha_macro_arg *arg = macro->argsets; | |
2982 | int tokidx = 0; | |
19f78583 | 2983 | |
ea1562b3 | 2984 | while (*arg) |
19f78583 | 2985 | { |
ea1562b3 NC |
2986 | switch (*arg) |
2987 | { | |
2988 | case MACRO_EOA: | |
2989 | if (tokidx == ntok) | |
2990 | return macro; | |
2991 | else | |
2992 | tokidx = 0; | |
2993 | break; | |
252b5132 | 2994 | |
ea1562b3 NC |
2995 | /* Index register. */ |
2996 | case MACRO_IR: | |
2997 | if (tokidx >= ntok || tok[tokidx].X_op != O_register | |
2998 | || !is_ir_num (tok[tokidx].X_add_number)) | |
2999 | goto match_failed; | |
3000 | ++tokidx; | |
3001 | break; | |
19f78583 | 3002 | |
ea1562b3 NC |
3003 | /* Parenthesized index register. */ |
3004 | case MACRO_PIR: | |
3005 | if (tokidx >= ntok || tok[tokidx].X_op != O_pregister | |
3006 | || !is_ir_num (tok[tokidx].X_add_number)) | |
3007 | goto match_failed; | |
3008 | ++tokidx; | |
3009 | break; | |
19f78583 | 3010 | |
ea1562b3 NC |
3011 | /* Optional parenthesized index register. */ |
3012 | case MACRO_OPIR: | |
3013 | if (tokidx < ntok && tok[tokidx].X_op == O_pregister | |
3014 | && is_ir_num (tok[tokidx].X_add_number)) | |
3015 | ++tokidx; | |
3016 | break; | |
252b5132 | 3017 | |
ea1562b3 NC |
3018 | /* Leading comma with a parenthesized index register. */ |
3019 | case MACRO_CPIR: | |
3020 | if (tokidx >= ntok || tok[tokidx].X_op != O_cpregister | |
3021 | || !is_ir_num (tok[tokidx].X_add_number)) | |
3022 | goto match_failed; | |
3023 | ++tokidx; | |
3024 | break; | |
252b5132 | 3025 | |
ea1562b3 NC |
3026 | /* Floating point register. */ |
3027 | case MACRO_FPR: | |
3028 | if (tokidx >= ntok || tok[tokidx].X_op != O_register | |
3029 | || !is_fpr_num (tok[tokidx].X_add_number)) | |
3030 | goto match_failed; | |
3031 | ++tokidx; | |
3032 | break; | |
252b5132 | 3033 | |
ea1562b3 NC |
3034 | /* Normal expression. */ |
3035 | case MACRO_EXP: | |
3036 | if (tokidx >= ntok) | |
3037 | goto match_failed; | |
3038 | switch (tok[tokidx].X_op) | |
3039 | { | |
3040 | case O_illegal: | |
3041 | case O_absent: | |
3042 | case O_register: | |
3043 | case O_pregister: | |
3044 | case O_cpregister: | |
3045 | case O_literal: | |
3046 | case O_lituse_base: | |
3047 | case O_lituse_bytoff: | |
3048 | case O_lituse_jsr: | |
3049 | case O_gpdisp: | |
3050 | case O_gprelhigh: | |
3051 | case O_gprellow: | |
3052 | case O_gprel: | |
3053 | case O_samegp: | |
3054 | goto match_failed; | |
252b5132 | 3055 | |
ea1562b3 NC |
3056 | default: |
3057 | break; | |
3058 | } | |
3059 | ++tokidx; | |
3060 | break; | |
19f78583 | 3061 | |
ea1562b3 NC |
3062 | match_failed: |
3063 | while (*arg != MACRO_EOA) | |
3064 | ++arg; | |
3065 | tokidx = 0; | |
3066 | break; | |
3067 | } | |
3068 | ++arg; | |
19f78583 | 3069 | } |
252b5132 | 3070 | } |
ea1562b3 NC |
3071 | while (++macro - alpha_macros < (int) alpha_num_macros |
3072 | && !strcmp (macro->name, first_macro->name)); | |
3073 | ||
3074 | return NULL; | |
252b5132 RH |
3075 | } |
3076 | ||
ea1562b3 NC |
3077 | /* Given an opcode name and a pre-tokenized set of arguments, take the |
3078 | opcode all the way through emission. */ | |
252b5132 RH |
3079 | |
3080 | static void | |
ea1562b3 NC |
3081 | assemble_tokens (const char *opname, |
3082 | const expressionS *tok, | |
3083 | int ntok, | |
3084 | int local_macros_on) | |
252b5132 | 3085 | { |
ea1562b3 NC |
3086 | int found_something = 0; |
3087 | const struct alpha_opcode *opcode; | |
3088 | const struct alpha_macro *macro; | |
3089 | int cpumatch = 1; | |
3090 | bfd_reloc_code_real_type reloc = BFD_RELOC_UNUSED; | |
252b5132 | 3091 | |
ea1562b3 NC |
3092 | #ifdef RELOC_OP_P |
3093 | /* If a user-specified relocation is present, this is not a macro. */ | |
3094 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) | |
3095 | { | |
3096 | reloc = ALPHA_RELOC_TABLE (tok[ntok - 1].X_op)->reloc; | |
3097 | ntok--; | |
3098 | } | |
3099 | else | |
3100 | #endif | |
3101 | if (local_macros_on) | |
3102 | { | |
3103 | macro = ((const struct alpha_macro *) | |
3104 | hash_find (alpha_macro_hash, opname)); | |
3105 | if (macro) | |
3106 | { | |
3107 | found_something = 1; | |
3108 | macro = find_macro_match (macro, tok, &ntok); | |
3109 | if (macro) | |
3110 | { | |
3111 | (*macro->emit) (tok, ntok, macro->arg); | |
3112 | return; | |
3113 | } | |
3114 | } | |
3115 | } | |
252b5132 | 3116 | |
ea1562b3 NC |
3117 | /* Search opcodes. */ |
3118 | opcode = (const struct alpha_opcode *) hash_find (alpha_opcode_hash, opname); | |
3119 | if (opcode) | |
3120 | { | |
3121 | found_something = 1; | |
3122 | opcode = find_opcode_match (opcode, tok, &ntok, &cpumatch); | |
3123 | if (opcode) | |
3124 | { | |
3125 | struct alpha_insn insn; | |
3126 | assemble_insn (opcode, tok, ntok, &insn, reloc); | |
252b5132 | 3127 | |
ea1562b3 NC |
3128 | /* Copy the sequence number for the reloc from the reloc token. */ |
3129 | if (reloc != BFD_RELOC_UNUSED) | |
3130 | insn.sequence = tok[ntok].X_add_number; | |
252b5132 | 3131 | |
ea1562b3 NC |
3132 | emit_insn (&insn); |
3133 | return; | |
3134 | } | |
3135 | } | |
252b5132 | 3136 | |
ea1562b3 NC |
3137 | if (found_something) |
3138 | { | |
3139 | if (cpumatch) | |
3140 | as_bad (_("inappropriate arguments for opcode `%s'"), opname); | |
3141 | else | |
3142 | as_bad (_("opcode `%s' not supported for target %s"), opname, | |
3143 | alpha_target_name); | |
3144 | } | |
3145 | else | |
3146 | as_bad (_("unknown opcode `%s'"), opname); | |
3147 | } | |
3148 | \f | |
3149 | #ifdef OBJ_EVAX | |
252b5132 | 3150 | |
ea1562b3 NC |
3151 | /* Add symbol+addend to link pool. |
3152 | Return offset from basesym to entry in link pool. | |
252b5132 | 3153 | |
ea1562b3 | 3154 | Add new fixup only if offset isn't 16bit. */ |
252b5132 | 3155 | |
ea1562b3 NC |
3156 | valueT |
3157 | add_to_link_pool (symbolS *basesym, | |
3158 | symbolS *sym, | |
3159 | offsetT addend) | |
3160 | { | |
3161 | segT current_section = now_seg; | |
3162 | int current_subsec = now_subseg; | |
3163 | valueT offset; | |
3164 | bfd_reloc_code_real_type reloc_type; | |
3165 | char *p; | |
3166 | segment_info_type *seginfo = seg_info (alpha_link_section); | |
3167 | fixS *fixp; | |
252b5132 | 3168 | |
ea1562b3 | 3169 | offset = - *symbol_get_obj (basesym); |
252b5132 | 3170 | |
ea1562b3 NC |
3171 | /* @@ This assumes all entries in a given section will be of the same |
3172 | size... Probably correct, but unwise to rely on. */ | |
3173 | /* This must always be called with the same subsegment. */ | |
252b5132 | 3174 | |
ea1562b3 NC |
3175 | if (seginfo->frchainP) |
3176 | for (fixp = seginfo->frchainP->fix_root; | |
3177 | fixp != (fixS *) NULL; | |
3178 | fixp = fixp->fx_next, offset += 8) | |
3179 | { | |
3180 | if (fixp->fx_addsy == sym && fixp->fx_offset == addend) | |
3181 | { | |
3182 | if (range_signed_16 (offset)) | |
3183 | { | |
3184 | return offset; | |
3185 | } | |
3186 | } | |
3187 | } | |
252b5132 | 3188 | |
ea1562b3 | 3189 | /* Not found in 16bit signed range. */ |
252b5132 | 3190 | |
ea1562b3 NC |
3191 | subseg_set (alpha_link_section, 0); |
3192 | p = frag_more (8); | |
3193 | memset (p, 0, 8); | |
252b5132 | 3194 | |
ea1562b3 NC |
3195 | fix_new (frag_now, p - frag_now->fr_literal, 8, sym, addend, 0, |
3196 | BFD_RELOC_64); | |
252b5132 | 3197 | |
ea1562b3 NC |
3198 | subseg_set (current_section, current_subsec); |
3199 | seginfo->literal_pool_size += 8; | |
3200 | return offset; | |
3201 | } | |
252b5132 | 3202 | |
ea1562b3 NC |
3203 | #endif /* OBJ_EVAX */ |
3204 | \f | |
3205 | /* Assembler directives. */ | |
252b5132 | 3206 | |
ea1562b3 NC |
3207 | /* Handle the .text pseudo-op. This is like the usual one, but it |
3208 | clears alpha_insn_label and restores auto alignment. */ | |
252b5132 | 3209 | |
ea1562b3 NC |
3210 | static void |
3211 | s_alpha_text (int i) | |
252b5132 | 3212 | |
ea1562b3 NC |
3213 | { |
3214 | #ifdef OBJ_ELF | |
3215 | obj_elf_text (i); | |
3216 | #else | |
3217 | s_text (i); | |
3218 | #endif | |
3219 | alpha_insn_label = NULL; | |
3220 | alpha_auto_align_on = 1; | |
3221 | alpha_current_align = 0; | |
252b5132 RH |
3222 | } |
3223 | ||
ea1562b3 NC |
3224 | /* Handle the .data pseudo-op. This is like the usual one, but it |
3225 | clears alpha_insn_label and restores auto alignment. */ | |
252b5132 RH |
3226 | |
3227 | static void | |
ea1562b3 | 3228 | s_alpha_data (int i) |
252b5132 | 3229 | { |
ea1562b3 NC |
3230 | #ifdef OBJ_ELF |
3231 | obj_elf_data (i); | |
3232 | #else | |
3233 | s_data (i); | |
3234 | #endif | |
3235 | alpha_insn_label = NULL; | |
3236 | alpha_auto_align_on = 1; | |
3237 | alpha_current_align = 0; | |
252b5132 RH |
3238 | } |
3239 | ||
ea1562b3 | 3240 | #if defined (OBJ_ECOFF) || defined (OBJ_EVAX) |
252b5132 | 3241 | |
ea1562b3 NC |
3242 | /* Handle the OSF/1 and openVMS .comm pseudo quirks. |
3243 | openVMS constructs a section for every common symbol. */ | |
252b5132 RH |
3244 | |
3245 | static void | |
ea1562b3 | 3246 | s_alpha_comm (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3247 | { |
ea1562b3 NC |
3248 | char *name; |
3249 | char c; | |
3250 | char *p; | |
3251 | offsetT temp; | |
3252 | symbolS *symbolP; | |
3253 | #ifdef OBJ_EVAX | |
3254 | segT current_section = now_seg; | |
3255 | int current_subsec = now_subseg; | |
3256 | segT new_seg; | |
3257 | #endif | |
252b5132 | 3258 | |
ea1562b3 NC |
3259 | name = input_line_pointer; |
3260 | c = get_symbol_end (); | |
252b5132 | 3261 | |
ea1562b3 NC |
3262 | /* Just after name is now '\0'. */ |
3263 | p = input_line_pointer; | |
3264 | *p = c; | |
252b5132 | 3265 | |
ea1562b3 | 3266 | SKIP_WHITESPACE (); |
252b5132 | 3267 | |
ea1562b3 NC |
3268 | /* Alpha OSF/1 compiler doesn't provide the comma, gcc does. */ |
3269 | if (*input_line_pointer == ',') | |
252b5132 | 3270 | { |
ea1562b3 NC |
3271 | input_line_pointer++; |
3272 | SKIP_WHITESPACE (); | |
3273 | } | |
3274 | if ((temp = get_absolute_expression ()) < 0) | |
3275 | { | |
3276 | as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp); | |
3277 | ignore_rest_of_line (); | |
3278 | return; | |
3279 | } | |
252b5132 | 3280 | |
ea1562b3 NC |
3281 | *p = 0; |
3282 | symbolP = symbol_find_or_make (name); | |
252b5132 | 3283 | |
ea1562b3 NC |
3284 | #ifdef OBJ_EVAX |
3285 | /* Make a section for the common symbol. */ | |
3286 | new_seg = subseg_new (xstrdup (name), 0); | |
3287 | #endif | |
252b5132 | 3288 | |
ea1562b3 | 3289 | *p = c; |
252b5132 | 3290 | |
ea1562b3 NC |
3291 | #ifdef OBJ_EVAX |
3292 | /* Alignment might follow. */ | |
3293 | if (*input_line_pointer == ',') | |
3294 | { | |
3295 | offsetT align; | |
3296 | ||
3297 | input_line_pointer++; | |
3298 | align = get_absolute_expression (); | |
3299 | bfd_set_section_alignment (stdoutput, new_seg, align); | |
3300 | } | |
3301 | #endif | |
3302 | ||
3303 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) | |
3304 | { | |
3305 | as_bad (_("Ignoring attempt to re-define symbol")); | |
3306 | ignore_rest_of_line (); | |
3307 | return; | |
3308 | } | |
3309 | ||
3310 | #ifdef OBJ_EVAX | |
3311 | if (bfd_section_size (stdoutput, new_seg) > 0) | |
3312 | { | |
3313 | if (bfd_section_size (stdoutput, new_seg) != temp) | |
3314 | as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."), | |
3315 | S_GET_NAME (symbolP), | |
3316 | (long) bfd_section_size (stdoutput, new_seg), | |
3317 | (long) temp); | |
3318 | } | |
3319 | #else | |
3320 | if (S_GET_VALUE (symbolP)) | |
3321 | { | |
3322 | if (S_GET_VALUE (symbolP) != (valueT) temp) | |
3323 | as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."), | |
3324 | S_GET_NAME (symbolP), | |
3325 | (long) S_GET_VALUE (symbolP), | |
3326 | (long) temp); | |
252b5132 | 3327 | } |
ea1562b3 | 3328 | #endif |
252b5132 RH |
3329 | else |
3330 | { | |
ea1562b3 NC |
3331 | #ifdef OBJ_EVAX |
3332 | subseg_set (new_seg, 0); | |
3333 | p = frag_more (temp); | |
3334 | new_seg->flags |= SEC_IS_COMMON; | |
86ebace2 | 3335 | S_SET_SEGMENT (symbolP, new_seg); |
ea1562b3 NC |
3336 | #else |
3337 | S_SET_VALUE (symbolP, (valueT) temp); | |
86ebace2 | 3338 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
ea1562b3 NC |
3339 | #endif |
3340 | S_SET_EXTERNAL (symbolP); | |
3341 | } | |
252b5132 | 3342 | |
ea1562b3 NC |
3343 | #ifdef OBJ_EVAX |
3344 | subseg_set (current_section, current_subsec); | |
3345 | #endif | |
252b5132 | 3346 | |
ea1562b3 | 3347 | know (symbol_get_frag (symbolP) == &zero_address_frag); |
252b5132 | 3348 | |
ea1562b3 NC |
3349 | demand_empty_rest_of_line (); |
3350 | } | |
252b5132 | 3351 | |
ea1562b3 | 3352 | #endif /* ! OBJ_ELF */ |
252b5132 | 3353 | |
ea1562b3 | 3354 | #ifdef OBJ_ECOFF |
252b5132 | 3355 | |
ea1562b3 NC |
3356 | /* Handle the .rdata pseudo-op. This is like the usual one, but it |
3357 | clears alpha_insn_label and restores auto alignment. */ | |
3358 | ||
3359 | static void | |
3360 | s_alpha_rdata (int ignore ATTRIBUTE_UNUSED) | |
3361 | { | |
3362 | int temp; | |
3363 | ||
3364 | temp = get_absolute_expression (); | |
3365 | subseg_new (".rdata", 0); | |
3366 | demand_empty_rest_of_line (); | |
3367 | alpha_insn_label = NULL; | |
3368 | alpha_auto_align_on = 1; | |
3369 | alpha_current_align = 0; | |
252b5132 RH |
3370 | } |
3371 | ||
ea1562b3 NC |
3372 | #endif |
3373 | ||
3374 | #ifdef OBJ_ECOFF | |
3375 | ||
3376 | /* Handle the .sdata pseudo-op. This is like the usual one, but it | |
3377 | clears alpha_insn_label and restores auto alignment. */ | |
252b5132 RH |
3378 | |
3379 | static void | |
ea1562b3 | 3380 | s_alpha_sdata (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3381 | { |
ea1562b3 | 3382 | int temp; |
252b5132 | 3383 | |
ea1562b3 NC |
3384 | temp = get_absolute_expression (); |
3385 | subseg_new (".sdata", 0); | |
3386 | demand_empty_rest_of_line (); | |
3387 | alpha_insn_label = NULL; | |
3388 | alpha_auto_align_on = 1; | |
3389 | alpha_current_align = 0; | |
3390 | } | |
3391 | #endif | |
252b5132 | 3392 | |
ea1562b3 NC |
3393 | #ifdef OBJ_ELF |
3394 | struct alpha_elf_frame_data | |
3395 | { | |
3396 | symbolS *func_sym; | |
3397 | symbolS *func_end_sym; | |
3398 | symbolS *prologue_sym; | |
3399 | unsigned int mask; | |
3400 | unsigned int fmask; | |
3401 | int fp_regno; | |
3402 | int ra_regno; | |
3403 | offsetT frame_size; | |
3404 | offsetT mask_offset; | |
3405 | offsetT fmask_offset; | |
252b5132 | 3406 | |
ea1562b3 NC |
3407 | struct alpha_elf_frame_data *next; |
3408 | }; | |
252b5132 | 3409 | |
ea1562b3 NC |
3410 | static struct alpha_elf_frame_data *all_frame_data; |
3411 | static struct alpha_elf_frame_data **plast_frame_data = &all_frame_data; | |
3412 | static struct alpha_elf_frame_data *cur_frame_data; | |
252b5132 | 3413 | |
ea1562b3 NC |
3414 | /* Handle the .section pseudo-op. This is like the usual one, but it |
3415 | clears alpha_insn_label and restores auto alignment. */ | |
252b5132 | 3416 | |
ea1562b3 NC |
3417 | static void |
3418 | s_alpha_section (int ignore ATTRIBUTE_UNUSED) | |
3419 | { | |
3420 | obj_elf_section (ignore); | |
252b5132 | 3421 | |
ea1562b3 NC |
3422 | alpha_insn_label = NULL; |
3423 | alpha_auto_align_on = 1; | |
3424 | alpha_current_align = 0; | |
3425 | } | |
252b5132 | 3426 | |
ea1562b3 NC |
3427 | static void |
3428 | s_alpha_ent (int dummy ATTRIBUTE_UNUSED) | |
3429 | { | |
3430 | if (ECOFF_DEBUGGING) | |
3431 | ecoff_directive_ent (0); | |
252b5132 RH |
3432 | else |
3433 | { | |
ea1562b3 NC |
3434 | char *name, name_end; |
3435 | name = input_line_pointer; | |
3436 | name_end = get_symbol_end (); | |
252b5132 | 3437 | |
ea1562b3 | 3438 | if (! is_name_beginner (*name)) |
252b5132 | 3439 | { |
ea1562b3 NC |
3440 | as_warn (_(".ent directive has no name")); |
3441 | *input_line_pointer = name_end; | |
252b5132 | 3442 | } |
ea1562b3 | 3443 | else |
252b5132 | 3444 | { |
ea1562b3 | 3445 | symbolS *sym; |
252b5132 | 3446 | |
ea1562b3 NC |
3447 | if (cur_frame_data) |
3448 | as_warn (_("nested .ent directives")); | |
252b5132 | 3449 | |
ea1562b3 NC |
3450 | sym = symbol_find_or_make (name); |
3451 | symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION; | |
252b5132 | 3452 | |
ea1562b3 NC |
3453 | cur_frame_data = calloc (1, sizeof (*cur_frame_data)); |
3454 | cur_frame_data->func_sym = sym; | |
252b5132 | 3455 | |
ea1562b3 NC |
3456 | /* Provide sensible defaults. */ |
3457 | cur_frame_data->fp_regno = 30; /* sp */ | |
3458 | cur_frame_data->ra_regno = 26; /* ra */ | |
252b5132 | 3459 | |
ea1562b3 NC |
3460 | *plast_frame_data = cur_frame_data; |
3461 | plast_frame_data = &cur_frame_data->next; | |
3462 | ||
3463 | /* The .ent directive is sometimes followed by a number. Not sure | |
3464 | what it really means, but ignore it. */ | |
3465 | *input_line_pointer = name_end; | |
3466 | SKIP_WHITESPACE (); | |
3467 | if (*input_line_pointer == ',') | |
3468 | { | |
3469 | input_line_pointer++; | |
3470 | SKIP_WHITESPACE (); | |
3471 | } | |
3472 | if (ISDIGIT (*input_line_pointer) || *input_line_pointer == '-') | |
3473 | (void) get_absolute_expression (); | |
3474 | } | |
3475 | demand_empty_rest_of_line (); | |
3476 | } | |
3477 | } | |
252b5132 RH |
3478 | |
3479 | static void | |
ea1562b3 | 3480 | s_alpha_end (int dummy ATTRIBUTE_UNUSED) |
252b5132 | 3481 | { |
ea1562b3 NC |
3482 | if (ECOFF_DEBUGGING) |
3483 | ecoff_directive_end (0); | |
252b5132 | 3484 | else |
ea1562b3 NC |
3485 | { |
3486 | char *name, name_end; | |
3487 | name = input_line_pointer; | |
3488 | name_end = get_symbol_end (); | |
252b5132 | 3489 | |
ea1562b3 NC |
3490 | if (! is_name_beginner (*name)) |
3491 | { | |
3492 | as_warn (_(".end directive has no name")); | |
3493 | *input_line_pointer = name_end; | |
3494 | } | |
3495 | else | |
3496 | { | |
3497 | symbolS *sym; | |
252b5132 | 3498 | |
ea1562b3 NC |
3499 | sym = symbol_find (name); |
3500 | if (!cur_frame_data) | |
3501 | as_warn (_(".end directive without matching .ent")); | |
3502 | else if (sym != cur_frame_data->func_sym) | |
3503 | as_warn (_(".end directive names different symbol than .ent")); | |
252b5132 | 3504 | |
ea1562b3 NC |
3505 | /* Create an expression to calculate the size of the function. */ |
3506 | if (sym && cur_frame_data) | |
3507 | { | |
3508 | OBJ_SYMFIELD_TYPE *obj = symbol_get_obj (sym); | |
3509 | expressionS *exp = xmalloc (sizeof (expressionS)); | |
252b5132 | 3510 | |
ea1562b3 NC |
3511 | obj->size = exp; |
3512 | exp->X_op = O_subtract; | |
3513 | exp->X_add_symbol = symbol_temp_new_now (); | |
3514 | exp->X_op_symbol = sym; | |
3515 | exp->X_add_number = 0; | |
252b5132 | 3516 | |
ea1562b3 NC |
3517 | cur_frame_data->func_end_sym = exp->X_add_symbol; |
3518 | } | |
252b5132 | 3519 | |
ea1562b3 | 3520 | cur_frame_data = NULL; |
252b5132 | 3521 | |
ea1562b3 NC |
3522 | *input_line_pointer = name_end; |
3523 | } | |
3524 | demand_empty_rest_of_line (); | |
3525 | } | |
252b5132 RH |
3526 | } |
3527 | ||
252b5132 | 3528 | static void |
ea1562b3 | 3529 | s_alpha_mask (int fp) |
252b5132 | 3530 | { |
ea1562b3 NC |
3531 | if (ECOFF_DEBUGGING) |
3532 | { | |
3533 | if (fp) | |
3534 | ecoff_directive_fmask (0); | |
3535 | else | |
3536 | ecoff_directive_mask (0); | |
3537 | } | |
252b5132 | 3538 | else |
ea1562b3 NC |
3539 | { |
3540 | long val; | |
3541 | offsetT offset; | |
252b5132 | 3542 | |
ea1562b3 NC |
3543 | if (!cur_frame_data) |
3544 | { | |
3545 | if (fp) | |
3546 | as_warn (_(".fmask outside of .ent")); | |
3547 | else | |
3548 | as_warn (_(".mask outside of .ent")); | |
3549 | discard_rest_of_line (); | |
3550 | return; | |
3551 | } | |
252b5132 | 3552 | |
ea1562b3 NC |
3553 | if (get_absolute_expression_and_terminator (&val) != ',') |
3554 | { | |
3555 | if (fp) | |
3556 | as_warn (_("bad .fmask directive")); | |
3557 | else | |
3558 | as_warn (_("bad .mask directive")); | |
3559 | --input_line_pointer; | |
3560 | discard_rest_of_line (); | |
3561 | return; | |
3562 | } | |
252b5132 | 3563 | |
ea1562b3 NC |
3564 | offset = get_absolute_expression (); |
3565 | demand_empty_rest_of_line (); | |
252b5132 | 3566 | |
ea1562b3 NC |
3567 | if (fp) |
3568 | { | |
3569 | cur_frame_data->fmask = val; | |
3570 | cur_frame_data->fmask_offset = offset; | |
3571 | } | |
3572 | else | |
3573 | { | |
3574 | cur_frame_data->mask = val; | |
3575 | cur_frame_data->mask_offset = offset; | |
3576 | } | |
3577 | } | |
252b5132 | 3578 | } |
252b5132 RH |
3579 | |
3580 | static void | |
ea1562b3 | 3581 | s_alpha_frame (int dummy ATTRIBUTE_UNUSED) |
252b5132 | 3582 | { |
ea1562b3 NC |
3583 | if (ECOFF_DEBUGGING) |
3584 | ecoff_directive_frame (0); | |
3585 | else | |
3586 | { | |
3587 | long val; | |
252b5132 | 3588 | |
ea1562b3 NC |
3589 | if (!cur_frame_data) |
3590 | { | |
3591 | as_warn (_(".frame outside of .ent")); | |
3592 | discard_rest_of_line (); | |
3593 | return; | |
3594 | } | |
252b5132 | 3595 | |
ea1562b3 | 3596 | cur_frame_data->fp_regno = tc_get_register (1); |
252b5132 | 3597 | |
ea1562b3 NC |
3598 | SKIP_WHITESPACE (); |
3599 | if (*input_line_pointer++ != ',' | |
3600 | || get_absolute_expression_and_terminator (&val) != ',') | |
3601 | { | |
3602 | as_warn (_("bad .frame directive")); | |
3603 | --input_line_pointer; | |
3604 | discard_rest_of_line (); | |
3605 | return; | |
3606 | } | |
3607 | cur_frame_data->frame_size = val; | |
252b5132 | 3608 | |
ea1562b3 NC |
3609 | cur_frame_data->ra_regno = tc_get_register (0); |
3610 | ||
3611 | /* Next comes the "offset of saved $a0 from $sp". In gcc terms | |
3612 | this is current_function_pretend_args_size. There's no place | |
3613 | to put this value, so ignore it. */ | |
3614 | s_ignore (42); | |
3615 | } | |
3616 | } | |
252b5132 RH |
3617 | |
3618 | static void | |
ea1562b3 | 3619 | s_alpha_prologue (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3620 | { |
ea1562b3 NC |
3621 | symbolS *sym; |
3622 | int arg; | |
252b5132 | 3623 | |
ea1562b3 NC |
3624 | arg = get_absolute_expression (); |
3625 | demand_empty_rest_of_line (); | |
252b5132 | 3626 | |
ea1562b3 NC |
3627 | if (ECOFF_DEBUGGING) |
3628 | sym = ecoff_get_cur_proc_sym (); | |
3629 | else | |
3630 | sym = cur_frame_data ? cur_frame_data->func_sym : NULL; | |
252b5132 | 3631 | |
ea1562b3 | 3632 | if (sym == NULL) |
252b5132 | 3633 | { |
ea1562b3 | 3634 | as_bad (_(".prologue directive without a preceding .ent directive")); |
252b5132 RH |
3635 | return; |
3636 | } | |
3637 | ||
ea1562b3 | 3638 | switch (arg) |
252b5132 | 3639 | { |
ea1562b3 NC |
3640 | case 0: /* No PV required. */ |
3641 | S_SET_OTHER (sym, STO_ALPHA_NOPV | |
3642 | | (S_GET_OTHER (sym) & ~STO_ALPHA_STD_GPLOAD)); | |
3643 | break; | |
3644 | case 1: /* Std GP load. */ | |
3645 | S_SET_OTHER (sym, STO_ALPHA_STD_GPLOAD | |
3646 | | (S_GET_OTHER (sym) & ~STO_ALPHA_STD_GPLOAD)); | |
3647 | break; | |
3648 | case 2: /* Non-std use of PV. */ | |
3649 | break; | |
252b5132 | 3650 | |
ea1562b3 NC |
3651 | default: |
3652 | as_bad (_("Invalid argument %d to .prologue."), arg); | |
3653 | break; | |
252b5132 RH |
3654 | } |
3655 | ||
ea1562b3 NC |
3656 | if (cur_frame_data) |
3657 | cur_frame_data->prologue_sym = symbol_temp_new_now (); | |
252b5132 RH |
3658 | } |
3659 | ||
ea1562b3 | 3660 | static char *first_file_directive; |
252b5132 RH |
3661 | |
3662 | static void | |
ea1562b3 | 3663 | s_alpha_file (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3664 | { |
ea1562b3 NC |
3665 | /* Save the first .file directive we see, so that we can change our |
3666 | minds about whether ecoff debugging should or shouldn't be enabled. */ | |
3667 | if (alpha_flag_mdebug < 0 && ! first_file_directive) | |
3668 | { | |
3669 | char *start = input_line_pointer; | |
3670 | size_t len; | |
252b5132 | 3671 | |
ea1562b3 | 3672 | discard_rest_of_line (); |
252b5132 | 3673 | |
ea1562b3 NC |
3674 | len = input_line_pointer - start; |
3675 | first_file_directive = xmalloc (len + 1); | |
3676 | memcpy (first_file_directive, start, len); | |
3677 | first_file_directive[len] = '\0'; | |
252b5132 | 3678 | |
ea1562b3 NC |
3679 | input_line_pointer = start; |
3680 | } | |
252b5132 | 3681 | |
ea1562b3 NC |
3682 | if (ECOFF_DEBUGGING) |
3683 | ecoff_directive_file (0); | |
3684 | else | |
3685 | dwarf2_directive_file (0); | |
3686 | } | |
252b5132 RH |
3687 | |
3688 | static void | |
ea1562b3 | 3689 | s_alpha_loc (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3690 | { |
ea1562b3 NC |
3691 | if (ECOFF_DEBUGGING) |
3692 | ecoff_directive_loc (0); | |
3693 | else | |
3694 | dwarf2_directive_loc (0); | |
252b5132 | 3695 | } |
252b5132 | 3696 | |
ea1562b3 NC |
3697 | static void |
3698 | s_alpha_stab (int n) | |
f37f01cf | 3699 | { |
ea1562b3 NC |
3700 | /* If we've been undecided about mdebug, make up our minds in favour. */ |
3701 | if (alpha_flag_mdebug < 0) | |
3702 | { | |
3703 | segT sec = subseg_new (".mdebug", 0); | |
3704 | bfd_set_section_flags (stdoutput, sec, SEC_HAS_CONTENTS | SEC_READONLY); | |
3705 | bfd_set_section_alignment (stdoutput, sec, 3); | |
f37f01cf | 3706 | |
ea1562b3 | 3707 | ecoff_read_begin_hook (); |
f37f01cf | 3708 | |
ea1562b3 NC |
3709 | if (first_file_directive) |
3710 | { | |
3711 | char *save_ilp = input_line_pointer; | |
3712 | input_line_pointer = first_file_directive; | |
3713 | ecoff_directive_file (0); | |
3714 | input_line_pointer = save_ilp; | |
3715 | free (first_file_directive); | |
3716 | } | |
252b5132 | 3717 | |
ea1562b3 NC |
3718 | alpha_flag_mdebug = 1; |
3719 | } | |
3720 | s_stab (n); | |
3721 | } | |
252b5132 RH |
3722 | |
3723 | static void | |
ea1562b3 | 3724 | s_alpha_coff_wrapper (int which) |
252b5132 | 3725 | { |
ea1562b3 NC |
3726 | static void (* const fns[]) PARAMS ((int)) = { |
3727 | ecoff_directive_begin, | |
3728 | ecoff_directive_bend, | |
3729 | ecoff_directive_def, | |
3730 | ecoff_directive_dim, | |
3731 | ecoff_directive_endef, | |
3732 | ecoff_directive_scl, | |
3733 | ecoff_directive_tag, | |
3734 | ecoff_directive_val, | |
3735 | }; | |
252b5132 | 3736 | |
ea1562b3 | 3737 | assert (which >= 0 && which < (int) (sizeof (fns)/sizeof (*fns))); |
252b5132 | 3738 | |
252b5132 | 3739 | if (ECOFF_DEBUGGING) |
ea1562b3 | 3740 | (*fns[which]) (0); |
252b5132 RH |
3741 | else |
3742 | { | |
ea1562b3 NC |
3743 | as_bad (_("ECOFF debugging is disabled.")); |
3744 | ignore_rest_of_line (); | |
3745 | } | |
3746 | } | |
252b5132 | 3747 | |
ea1562b3 NC |
3748 | /* Called at the end of assembly. Here we emit unwind info for frames |
3749 | unless the compiler has done it for us. */ | |
252b5132 | 3750 | |
ea1562b3 NC |
3751 | void |
3752 | alpha_elf_md_end (void) | |
3753 | { | |
3754 | struct alpha_elf_frame_data *p; | |
f37f01cf | 3755 | |
ea1562b3 NC |
3756 | if (cur_frame_data) |
3757 | as_warn (_(".ent directive without matching .end")); | |
f37f01cf | 3758 | |
ea1562b3 NC |
3759 | /* If someone has generated the unwind info themselves, great. */ |
3760 | if (bfd_get_section_by_name (stdoutput, ".eh_frame") != NULL) | |
3761 | return; | |
f37f01cf | 3762 | |
ea1562b3 NC |
3763 | /* Generate .eh_frame data for the unwind directives specified. */ |
3764 | for (p = all_frame_data; p ; p = p->next) | |
3765 | if (p->prologue_sym) | |
3766 | { | |
3767 | /* Create a temporary symbol at the same location as our | |
3768 | function symbol. This prevents problems with globals. */ | |
3769 | cfi_new_fde (symbol_temp_new (S_GET_SEGMENT (p->func_sym), | |
3770 | S_GET_VALUE (p->func_sym), | |
3771 | symbol_get_frag (p->func_sym))); | |
252b5132 | 3772 | |
ea1562b3 NC |
3773 | cfi_set_return_column (p->ra_regno); |
3774 | cfi_add_CFA_def_cfa_register (30); | |
3775 | if (p->fp_regno != 30 || p->mask || p->fmask || p->frame_size) | |
3776 | { | |
3777 | unsigned int mask; | |
3778 | offsetT offset; | |
252b5132 | 3779 | |
ea1562b3 | 3780 | cfi_add_advance_loc (p->prologue_sym); |
252b5132 | 3781 | |
ea1562b3 NC |
3782 | if (p->fp_regno != 30) |
3783 | if (p->frame_size != 0) | |
3784 | cfi_add_CFA_def_cfa (p->fp_regno, p->frame_size); | |
3785 | else | |
3786 | cfi_add_CFA_def_cfa_register (p->fp_regno); | |
3787 | else if (p->frame_size != 0) | |
3788 | cfi_add_CFA_def_cfa_offset (p->frame_size); | |
252b5132 | 3789 | |
ea1562b3 NC |
3790 | mask = p->mask; |
3791 | offset = p->mask_offset; | |
252b5132 | 3792 | |
ea1562b3 NC |
3793 | /* Recall that $26 is special-cased and stored first. */ |
3794 | if ((mask >> 26) & 1) | |
3795 | { | |
3796 | cfi_add_CFA_offset (26, offset); | |
3797 | offset += 8; | |
3798 | mask &= ~(1 << 26); | |
3799 | } | |
3800 | while (mask) | |
3801 | { | |
3802 | unsigned int i; | |
3803 | i = mask & -mask; | |
3804 | mask ^= i; | |
3805 | i = ffs (i) - 1; | |
f37f01cf | 3806 | |
ea1562b3 NC |
3807 | cfi_add_CFA_offset (i, offset); |
3808 | offset += 8; | |
3809 | } | |
f37f01cf | 3810 | |
ea1562b3 NC |
3811 | mask = p->fmask; |
3812 | offset = p->fmask_offset; | |
3813 | while (mask) | |
3814 | { | |
3815 | unsigned int i; | |
3816 | i = mask & -mask; | |
3817 | mask ^= i; | |
3818 | i = ffs (i) - 1; | |
252b5132 | 3819 | |
ea1562b3 NC |
3820 | cfi_add_CFA_offset (i + 32, offset); |
3821 | offset += 8; | |
3822 | } | |
3823 | } | |
252b5132 | 3824 | |
ea1562b3 NC |
3825 | cfi_end_fde (p->func_end_sym); |
3826 | } | |
252b5132 RH |
3827 | } |
3828 | ||
3829 | static void | |
ea1562b3 | 3830 | s_alpha_usepv (int unused ATTRIBUTE_UNUSED) |
252b5132 | 3831 | { |
ea1562b3 NC |
3832 | char *name, name_end; |
3833 | char *which, which_end; | |
3834 | symbolS *sym; | |
3835 | int other; | |
f37f01cf | 3836 | |
ea1562b3 NC |
3837 | name = input_line_pointer; |
3838 | name_end = get_symbol_end (); | |
f37f01cf | 3839 | |
ea1562b3 NC |
3840 | if (! is_name_beginner (*name)) |
3841 | { | |
3842 | as_bad (_(".usepv directive has no name")); | |
3843 | *input_line_pointer = name_end; | |
3844 | ignore_rest_of_line (); | |
3845 | return; | |
3846 | } | |
f37f01cf | 3847 | |
ea1562b3 NC |
3848 | sym = symbol_find_or_make (name); |
3849 | *input_line_pointer++ = name_end; | |
f37f01cf | 3850 | |
ea1562b3 NC |
3851 | if (name_end != ',') |
3852 | { | |
3853 | as_bad (_(".usepv directive has no type")); | |
3854 | ignore_rest_of_line (); | |
3855 | return; | |
f37f01cf | 3856 | } |
252b5132 | 3857 | |
ea1562b3 NC |
3858 | SKIP_WHITESPACE (); |
3859 | which = input_line_pointer; | |
3860 | which_end = get_symbol_end (); | |
3861 | ||
3862 | if (strcmp (which, "no") == 0) | |
3863 | other = STO_ALPHA_NOPV; | |
3864 | else if (strcmp (which, "std") == 0) | |
3865 | other = STO_ALPHA_STD_GPLOAD; | |
252b5132 | 3866 | else |
f37f01cf | 3867 | { |
ea1562b3 NC |
3868 | as_bad (_("unknown argument for .usepv")); |
3869 | other = 0; | |
3870 | } | |
f37f01cf | 3871 | |
ea1562b3 NC |
3872 | *input_line_pointer = which_end; |
3873 | demand_empty_rest_of_line (); | |
f37f01cf | 3874 | |
ea1562b3 NC |
3875 | S_SET_OTHER (sym, other | (S_GET_OTHER (sym) & ~STO_ALPHA_STD_GPLOAD)); |
3876 | } | |
3877 | #endif /* OBJ_ELF */ | |
f37f01cf | 3878 | |
ea1562b3 | 3879 | /* Standard calling conventions leaves the CFA at $30 on entry. */ |
f37f01cf | 3880 | |
ea1562b3 NC |
3881 | void |
3882 | alpha_cfi_frame_initial_instructions (void) | |
3883 | { | |
3884 | cfi_add_CFA_def_cfa_register (30); | |
252b5132 RH |
3885 | } |
3886 | ||
ea1562b3 NC |
3887 | #ifdef OBJ_EVAX |
3888 | ||
3889 | /* Handle the section specific pseudo-op. */ | |
3890 | ||
252b5132 | 3891 | static void |
ea1562b3 | 3892 | s_alpha_section (int secid) |
252b5132 | 3893 | { |
ea1562b3 NC |
3894 | int temp; |
3895 | #define EVAX_SECTION_COUNT 5 | |
3896 | static char *section_name[EVAX_SECTION_COUNT + 1] = | |
3897 | { "NULL", ".rdata", ".comm", ".link", ".ctors", ".dtors" }; | |
252b5132 | 3898 | |
ea1562b3 | 3899 | if ((secid <= 0) || (secid > EVAX_SECTION_COUNT)) |
81283cde | 3900 | { |
ea1562b3 NC |
3901 | as_fatal (_("Unknown section directive")); |
3902 | demand_empty_rest_of_line (); | |
81283cde AM |
3903 | return; |
3904 | } | |
ea1562b3 NC |
3905 | temp = get_absolute_expression (); |
3906 | subseg_new (section_name[secid], 0); | |
3907 | demand_empty_rest_of_line (); | |
3908 | alpha_insn_label = NULL; | |
3909 | alpha_auto_align_on = 1; | |
3910 | alpha_current_align = 0; | |
252b5132 RH |
3911 | } |
3912 | ||
ea1562b3 | 3913 | /* Parse .ent directives. */ |
a8316fe2 | 3914 | |
4dc7ead9 | 3915 | static void |
ea1562b3 | 3916 | s_alpha_ent (int ignore ATTRIBUTE_UNUSED) |
4dc7ead9 | 3917 | { |
ea1562b3 NC |
3918 | symbolS *symbol; |
3919 | expressionS symexpr; | |
a8316fe2 | 3920 | |
ea1562b3 NC |
3921 | alpha_evax_proc.pdsckind = 0; |
3922 | alpha_evax_proc.framereg = -1; | |
3923 | alpha_evax_proc.framesize = 0; | |
3924 | alpha_evax_proc.rsa_offset = 0; | |
3925 | alpha_evax_proc.ra_save = AXP_REG_RA; | |
3926 | alpha_evax_proc.fp_save = -1; | |
3927 | alpha_evax_proc.imask = 0; | |
3928 | alpha_evax_proc.fmask = 0; | |
3929 | alpha_evax_proc.prologue = 0; | |
3930 | alpha_evax_proc.type = 0; | |
a8316fe2 | 3931 | |
ea1562b3 | 3932 | expression (&symexpr); |
a8316fe2 | 3933 | |
ea1562b3 NC |
3934 | if (symexpr.X_op != O_symbol) |
3935 | { | |
3936 | as_fatal (_(".ent directive has no symbol")); | |
3937 | demand_empty_rest_of_line (); | |
3938 | return; | |
a8316fe2 RH |
3939 | } |
3940 | ||
ea1562b3 NC |
3941 | symbol = make_expr_symbol (&symexpr); |
3942 | symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION; | |
3943 | alpha_evax_proc.symbol = symbol; | |
4dc7ead9 | 3944 | |
ea1562b3 | 3945 | demand_empty_rest_of_line (); |
4dc7ead9 RH |
3946 | } |
3947 | ||
ea1562b3 NC |
3948 | /* Parse .frame <framreg>,<framesize>,RA,<rsa_offset> directives. */ |
3949 | ||
a8316fe2 | 3950 | static void |
ea1562b3 | 3951 | s_alpha_frame (int ignore ATTRIBUTE_UNUSED) |
a8316fe2 | 3952 | { |
ea1562b3 | 3953 | long val; |
a8316fe2 | 3954 | |
ea1562b3 | 3955 | alpha_evax_proc.framereg = tc_get_register (1); |
a8316fe2 | 3956 | |
ea1562b3 NC |
3957 | SKIP_WHITESPACE (); |
3958 | if (*input_line_pointer++ != ',' | |
3959 | || get_absolute_expression_and_terminator (&val) != ',') | |
3960 | { | |
3961 | as_warn (_("Bad .frame directive 1./2. param")); | |
3962 | --input_line_pointer; | |
3963 | demand_empty_rest_of_line (); | |
3964 | return; | |
3965 | } | |
a8316fe2 | 3966 | |
ea1562b3 NC |
3967 | alpha_evax_proc.framesize = val; |
3968 | ||
3969 | (void) tc_get_register (1); | |
3970 | SKIP_WHITESPACE (); | |
3971 | if (*input_line_pointer++ != ',') | |
3972 | { | |
3973 | as_warn (_("Bad .frame directive 3./4. param")); | |
3974 | --input_line_pointer; | |
3975 | demand_empty_rest_of_line (); | |
3976 | return; | |
a8316fe2 | 3977 | } |
ea1562b3 | 3978 | alpha_evax_proc.rsa_offset = get_absolute_expression (); |
a8316fe2 RH |
3979 | } |
3980 | ||
252b5132 | 3981 | static void |
ea1562b3 | 3982 | s_alpha_pdesc (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3983 | { |
ea1562b3 NC |
3984 | char *name; |
3985 | char name_end; | |
3986 | long val; | |
3987 | register char *p; | |
3988 | expressionS exp; | |
3989 | symbolS *entry_sym; | |
3990 | fixS *fixp; | |
3991 | segment_info_type *seginfo = seg_info (alpha_link_section); | |
252b5132 | 3992 | |
ea1562b3 NC |
3993 | if (now_seg != alpha_link_section) |
3994 | { | |
3995 | as_bad (_(".pdesc directive not in link (.link) section")); | |
3996 | demand_empty_rest_of_line (); | |
3997 | return; | |
3998 | } | |
252b5132 | 3999 | |
ea1562b3 NC |
4000 | if ((alpha_evax_proc.symbol == 0) |
4001 | || (!S_IS_DEFINED (alpha_evax_proc.symbol))) | |
252b5132 | 4002 | { |
ea1562b3 NC |
4003 | as_fatal (_(".pdesc has no matching .ent")); |
4004 | demand_empty_rest_of_line (); | |
4005 | return; | |
252b5132 | 4006 | } |
f37f01cf | 4007 | |
ea1562b3 NC |
4008 | *symbol_get_obj (alpha_evax_proc.symbol) = |
4009 | (valueT) seginfo->literal_pool_size; | |
f37f01cf | 4010 | |
ea1562b3 NC |
4011 | expression (&exp); |
4012 | if (exp.X_op != O_symbol) | |
4013 | { | |
4014 | as_warn (_(".pdesc directive has no entry symbol")); | |
4015 | demand_empty_rest_of_line (); | |
4016 | return; | |
4017 | } | |
f37f01cf | 4018 | |
ea1562b3 NC |
4019 | entry_sym = make_expr_symbol (&exp); |
4020 | /* Save bfd symbol of proc desc in function symbol. */ | |
4021 | symbol_get_bfdsym (alpha_evax_proc.symbol)->udata.p | |
4022 | = symbol_get_bfdsym (entry_sym); | |
f37f01cf | 4023 | |
ea1562b3 NC |
4024 | SKIP_WHITESPACE (); |
4025 | if (*input_line_pointer++ != ',') | |
4026 | { | |
4027 | as_warn (_("No comma after .pdesc <entryname>")); | |
4028 | demand_empty_rest_of_line (); | |
4029 | return; | |
4030 | } | |
f37f01cf | 4031 | |
ea1562b3 NC |
4032 | SKIP_WHITESPACE (); |
4033 | name = input_line_pointer; | |
4034 | name_end = get_symbol_end (); | |
f37f01cf | 4035 | |
ea1562b3 NC |
4036 | if (strncmp (name, "stack", 5) == 0) |
4037 | alpha_evax_proc.pdsckind = PDSC_S_K_KIND_FP_STACK; | |
f37f01cf | 4038 | |
ea1562b3 NC |
4039 | else if (strncmp (name, "reg", 3) == 0) |
4040 | alpha_evax_proc.pdsckind = PDSC_S_K_KIND_FP_REGISTER; | |
f37f01cf | 4041 | |
ea1562b3 NC |
4042 | else if (strncmp (name, "null", 4) == 0) |
4043 | alpha_evax_proc.pdsckind = PDSC_S_K_KIND_NULL; | |
f37f01cf | 4044 | |
ea1562b3 NC |
4045 | else |
4046 | { | |
4047 | as_fatal (_("unknown procedure kind")); | |
4048 | demand_empty_rest_of_line (); | |
4049 | return; | |
4050 | } | |
f37f01cf | 4051 | |
ea1562b3 NC |
4052 | *input_line_pointer = name_end; |
4053 | demand_empty_rest_of_line (); | |
f37f01cf | 4054 | |
ea1562b3 NC |
4055 | #ifdef md_flush_pending_output |
4056 | md_flush_pending_output (); | |
4057 | #endif | |
252b5132 RH |
4058 | |
4059 | frag_align (3, 0, 0); | |
4060 | p = frag_more (16); | |
4061 | fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0); | |
4062 | fixp->fx_done = 1; | |
4063 | seginfo->literal_pool_size += 16; | |
4064 | ||
4065 | *p = alpha_evax_proc.pdsckind | |
1aad8cf8 | 4066 | | ((alpha_evax_proc.framereg == 29) ? PDSC_S_M_BASE_REG_IS_FP : 0); |
66498417 | 4067 | *(p + 1) = PDSC_S_M_NATIVE | PDSC_S_M_NO_JACKET; |
252b5132 RH |
4068 | |
4069 | switch (alpha_evax_proc.pdsckind) | |
4070 | { | |
1aad8cf8 | 4071 | case PDSC_S_K_KIND_NULL: |
66498417 KH |
4072 | *(p + 2) = 0; |
4073 | *(p + 3) = 0; | |
1aad8cf8 KH |
4074 | break; |
4075 | case PDSC_S_K_KIND_FP_REGISTER: | |
66498417 KH |
4076 | *(p + 2) = alpha_evax_proc.fp_save; |
4077 | *(p + 3) = alpha_evax_proc.ra_save; | |
1aad8cf8 KH |
4078 | break; |
4079 | case PDSC_S_K_KIND_FP_STACK: | |
66498417 | 4080 | md_number_to_chars (p + 2, (valueT) alpha_evax_proc.rsa_offset, 2); |
1aad8cf8 KH |
4081 | break; |
4082 | default: /* impossible */ | |
4083 | break; | |
252b5132 RH |
4084 | } |
4085 | ||
66498417 KH |
4086 | *(p + 4) = 0; |
4087 | *(p + 5) = alpha_evax_proc.type & 0x0f; | |
252b5132 RH |
4088 | |
4089 | /* Signature offset. */ | |
66498417 | 4090 | md_number_to_chars (p + 6, (valueT) 0, 2); |
252b5132 | 4091 | |
66498417 | 4092 | fix_new_exp (frag_now, p - frag_now->fr_literal+8, 8, &exp, 0, BFD_RELOC_64); |
252b5132 RH |
4093 | |
4094 | if (alpha_evax_proc.pdsckind == PDSC_S_K_KIND_NULL) | |
4095 | return; | |
4096 | ||
4097 | /* Add dummy fix to make add_to_link_pool work. */ | |
4098 | p = frag_more (8); | |
4099 | fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0); | |
4100 | fixp->fx_done = 1; | |
4101 | seginfo->literal_pool_size += 8; | |
4102 | ||
4103 | /* pdesc+16: Size. */ | |
32ff5c2e | 4104 | md_number_to_chars (p, (valueT) alpha_evax_proc.framesize, 4); |
252b5132 | 4105 | |
66498417 | 4106 | md_number_to_chars (p + 4, (valueT) 0, 2); |
252b5132 RH |
4107 | |
4108 | /* Entry length. */ | |
66498417 | 4109 | md_number_to_chars (p + 6, alpha_evax_proc.prologue, 2); |
252b5132 RH |
4110 | |
4111 | if (alpha_evax_proc.pdsckind == PDSC_S_K_KIND_FP_REGISTER) | |
4112 | return; | |
4113 | ||
4114 | /* Add dummy fix to make add_to_link_pool work. */ | |
4115 | p = frag_more (8); | |
4116 | fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0); | |
4117 | fixp->fx_done = 1; | |
4118 | seginfo->literal_pool_size += 8; | |
4119 | ||
4120 | /* pdesc+24: register masks. */ | |
4121 | ||
4122 | md_number_to_chars (p, alpha_evax_proc.imask, 4); | |
66498417 | 4123 | md_number_to_chars (p + 4, alpha_evax_proc.fmask, 4); |
252b5132 RH |
4124 | } |
4125 | ||
252b5132 RH |
4126 | /* Support for crash debug on vms. */ |
4127 | ||
4128 | static void | |
ea1562b3 | 4129 | s_alpha_name (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 4130 | { |
ea1562b3 | 4131 | char *p; |
252b5132 RH |
4132 | expressionS exp; |
4133 | segment_info_type *seginfo = seg_info (alpha_link_section); | |
4134 | ||
4135 | if (now_seg != alpha_link_section) | |
4136 | { | |
4137 | as_bad (_(".name directive not in link (.link) section")); | |
4138 | demand_empty_rest_of_line (); | |
4139 | return; | |
4140 | } | |
4141 | ||
4142 | expression (&exp); | |
4143 | if (exp.X_op != O_symbol) | |
4144 | { | |
4145 | as_warn (_(".name directive has no symbol")); | |
4146 | demand_empty_rest_of_line (); | |
4147 | return; | |
4148 | } | |
4149 | ||
4150 | demand_empty_rest_of_line (); | |
4151 | ||
4152 | #ifdef md_flush_pending_output | |
4153 | md_flush_pending_output (); | |
4154 | #endif | |
4155 | ||
4156 | frag_align (3, 0, 0); | |
4157 | p = frag_more (8); | |
4158 | seginfo->literal_pool_size += 8; | |
4159 | ||
66498417 | 4160 | fix_new_exp (frag_now, p - frag_now->fr_literal, 8, &exp, 0, BFD_RELOC_64); |
252b5132 RH |
4161 | } |
4162 | ||
252b5132 | 4163 | static void |
ea1562b3 | 4164 | s_alpha_linkage (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
4165 | { |
4166 | expressionS exp; | |
4167 | char *p; | |
4168 | ||
4169 | #ifdef md_flush_pending_output | |
4170 | md_flush_pending_output (); | |
4171 | #endif | |
4172 | ||
4173 | expression (&exp); | |
4174 | if (exp.X_op != O_symbol) | |
4175 | { | |
4176 | as_fatal (_("No symbol after .linkage")); | |
4177 | } | |
4178 | else | |
4179 | { | |
4180 | p = frag_more (LKP_S_K_SIZE); | |
4181 | memset (p, 0, LKP_S_K_SIZE); | |
4182 | fix_new_exp (frag_now, p - frag_now->fr_literal, LKP_S_K_SIZE, &exp, 0,\ | |
4183 | BFD_RELOC_ALPHA_LINKAGE); | |
4184 | } | |
4185 | demand_empty_rest_of_line (); | |
252b5132 RH |
4186 | } |
4187 | ||
252b5132 | 4188 | static void |
ea1562b3 | 4189 | s_alpha_code_address (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
4190 | { |
4191 | expressionS exp; | |
4192 | char *p; | |
4193 | ||
4194 | #ifdef md_flush_pending_output | |
4195 | md_flush_pending_output (); | |
4196 | #endif | |
4197 | ||
4198 | expression (&exp); | |
4199 | if (exp.X_op != O_symbol) | |
ea1562b3 | 4200 | as_fatal (_("No symbol after .code_address")); |
252b5132 RH |
4201 | else |
4202 | { | |
4203 | p = frag_more (8); | |
4204 | memset (p, 0, 8); | |
4205 | fix_new_exp (frag_now, p - frag_now->fr_literal, 8, &exp, 0,\ | |
4206 | BFD_RELOC_ALPHA_CODEADDR); | |
4207 | } | |
4208 | demand_empty_rest_of_line (); | |
252b5132 RH |
4209 | } |
4210 | ||
252b5132 | 4211 | static void |
ea1562b3 | 4212 | s_alpha_fp_save (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
4213 | { |
4214 | ||
4215 | alpha_evax_proc.fp_save = tc_get_register (1); | |
4216 | ||
4217 | demand_empty_rest_of_line (); | |
252b5132 RH |
4218 | } |
4219 | ||
252b5132 | 4220 | static void |
ea1562b3 | 4221 | s_alpha_mask (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
4222 | { |
4223 | long val; | |
4224 | ||
4225 | if (get_absolute_expression_and_terminator (&val) != ',') | |
4226 | { | |
4227 | as_warn (_("Bad .mask directive")); | |
4228 | --input_line_pointer; | |
4229 | } | |
4230 | else | |
4231 | { | |
4232 | alpha_evax_proc.imask = val; | |
32ff5c2e | 4233 | (void) get_absolute_expression (); |
252b5132 RH |
4234 | } |
4235 | demand_empty_rest_of_line (); | |
252b5132 RH |
4236 | } |
4237 | ||
252b5132 | 4238 | static void |
ea1562b3 | 4239 | s_alpha_fmask (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
4240 | { |
4241 | long val; | |
4242 | ||
4243 | if (get_absolute_expression_and_terminator (&val) != ',') | |
4244 | { | |
4245 | as_warn (_("Bad .fmask directive")); | |
4246 | --input_line_pointer; | |
4247 | } | |
4248 | else | |
4249 | { | |
4250 | alpha_evax_proc.fmask = val; | |
4251 | (void) get_absolute_expression (); | |
4252 | } | |
4253 | demand_empty_rest_of_line (); | |
252b5132 RH |
4254 | } |
4255 | ||
4256 | static void | |
ea1562b3 | 4257 | s_alpha_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
4258 | { |
4259 | char c; | |
4260 | ||
4261 | c = get_symbol_end (); | |
4262 | *input_line_pointer = c; | |
4263 | demand_empty_rest_of_line (); | |
4264 | alpha_evax_proc.symbol = 0; | |
252b5132 RH |
4265 | } |
4266 | ||
252b5132 | 4267 | static void |
ea1562b3 | 4268 | s_alpha_file (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
4269 | { |
4270 | symbolS *s; | |
4271 | int length; | |
4272 | static char case_hack[32]; | |
4273 | ||
252b5132 | 4274 | sprintf (case_hack, "<CASE:%01d%01d>", |
9de8d8f1 | 4275 | alpha_flag_hash_long_names, alpha_flag_show_after_trunc); |
252b5132 RH |
4276 | |
4277 | s = symbol_find_or_make (case_hack); | |
9de8d8f1 | 4278 | symbol_get_bfdsym (s)->flags |= BSF_FILE; |
252b5132 RH |
4279 | |
4280 | get_absolute_expression (); | |
4281 | s = symbol_find_or_make (demand_copy_string (&length)); | |
9de8d8f1 | 4282 | symbol_get_bfdsym (s)->flags |= BSF_FILE; |
252b5132 | 4283 | demand_empty_rest_of_line (); |
252b5132 RH |
4284 | } |
4285 | #endif /* OBJ_EVAX */ | |
4286 | ||
4287 | /* Handle the .gprel32 pseudo op. */ | |
4288 | ||
4289 | static void | |
ea1562b3 | 4290 | s_alpha_gprel32 (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
4291 | { |
4292 | expressionS e; | |
4293 | char *p; | |
4294 | ||
4295 | SKIP_WHITESPACE (); | |
4296 | expression (&e); | |
4297 | ||
4298 | #ifdef OBJ_ELF | |
4299 | switch (e.X_op) | |
4300 | { | |
4301 | case O_constant: | |
32ff5c2e | 4302 | e.X_add_symbol = section_symbol (absolute_section); |
252b5132 RH |
4303 | e.X_op = O_symbol; |
4304 | /* FALLTHRU */ | |
4305 | case O_symbol: | |
4306 | break; | |
4307 | default: | |
bc805888 | 4308 | abort (); |
252b5132 RH |
4309 | } |
4310 | #else | |
4311 | #ifdef OBJ_ECOFF | |
4312 | switch (e.X_op) | |
4313 | { | |
4314 | case O_constant: | |
4315 | e.X_add_symbol = section_symbol (absolute_section); | |
4316 | /* fall through */ | |
4317 | case O_symbol: | |
4318 | e.X_op = O_subtract; | |
4319 | e.X_op_symbol = alpha_gp_symbol; | |
4320 | break; | |
4321 | default: | |
4322 | abort (); | |
4323 | } | |
4324 | #endif | |
4325 | #endif | |
4326 | ||
4327 | if (alpha_auto_align_on && alpha_current_align < 2) | |
4328 | alpha_align (2, (char *) NULL, alpha_insn_label, 0); | |
4329 | if (alpha_current_align > 2) | |
4330 | alpha_current_align = 2; | |
4331 | alpha_insn_label = NULL; | |
4332 | ||
4333 | p = frag_more (4); | |
4334 | memset (p, 0, 4); | |
66498417 | 4335 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, |
252b5132 RH |
4336 | &e, 0, BFD_RELOC_GPREL32); |
4337 | } | |
4338 | ||
4339 | /* Handle floating point allocation pseudo-ops. This is like the | |
4340 | generic vresion, but it makes sure the current label, if any, is | |
4341 | correctly aligned. */ | |
4342 | ||
4343 | static void | |
ea1562b3 | 4344 | s_alpha_float_cons (int type) |
252b5132 RH |
4345 | { |
4346 | int log_size; | |
4347 | ||
4348 | switch (type) | |
4349 | { | |
4350 | default: | |
4351 | case 'f': | |
4352 | case 'F': | |
4353 | log_size = 2; | |
4354 | break; | |
4355 | ||
4356 | case 'd': | |
4357 | case 'D': | |
4358 | case 'G': | |
4359 | log_size = 3; | |
4360 | break; | |
4361 | ||
4362 | case 'x': | |
4363 | case 'X': | |
4364 | case 'p': | |
4365 | case 'P': | |
4366 | log_size = 4; | |
4367 | break; | |
4368 | } | |
4369 | ||
4370 | if (alpha_auto_align_on && alpha_current_align < log_size) | |
4371 | alpha_align (log_size, (char *) NULL, alpha_insn_label, 0); | |
4372 | if (alpha_current_align > log_size) | |
4373 | alpha_current_align = log_size; | |
4374 | alpha_insn_label = NULL; | |
4375 | ||
4376 | float_cons (type); | |
4377 | } | |
4378 | ||
4379 | /* Handle the .proc pseudo op. We don't really do much with it except | |
4380 | parse it. */ | |
4381 | ||
4382 | static void | |
ea1562b3 | 4383 | s_alpha_proc (int is_static ATTRIBUTE_UNUSED) |
252b5132 RH |
4384 | { |
4385 | char *name; | |
4386 | char c; | |
4387 | char *p; | |
4388 | symbolS *symbolP; | |
4389 | int temp; | |
4390 | ||
ea1562b3 | 4391 | /* Takes ".proc name,nargs". */ |
252b5132 RH |
4392 | SKIP_WHITESPACE (); |
4393 | name = input_line_pointer; | |
4394 | c = get_symbol_end (); | |
4395 | p = input_line_pointer; | |
4396 | symbolP = symbol_find_or_make (name); | |
4397 | *p = c; | |
4398 | SKIP_WHITESPACE (); | |
4399 | if (*input_line_pointer != ',') | |
4400 | { | |
4401 | *p = 0; | |
4402 | as_warn (_("Expected comma after name \"%s\""), name); | |
4403 | *p = c; | |
4404 | temp = 0; | |
4405 | ignore_rest_of_line (); | |
4406 | } | |
4407 | else | |
4408 | { | |
4409 | input_line_pointer++; | |
4410 | temp = get_absolute_expression (); | |
4411 | } | |
7dcc9865 | 4412 | /* *symbol_get_obj (symbolP) = (signed char) temp; */ |
252b5132 RH |
4413 | as_warn (_("unhandled: .proc %s,%d"), name, temp); |
4414 | demand_empty_rest_of_line (); | |
4415 | } | |
4416 | ||
4417 | /* Handle the .set pseudo op. This is used to turn on and off most of | |
4418 | the assembler features. */ | |
4419 | ||
4420 | static void | |
ea1562b3 | 4421 | s_alpha_set (int x ATTRIBUTE_UNUSED) |
252b5132 RH |
4422 | { |
4423 | char *name, ch, *s; | |
4424 | int yesno = 1; | |
4425 | ||
4426 | SKIP_WHITESPACE (); | |
4427 | name = input_line_pointer; | |
4428 | ch = get_symbol_end (); | |
4429 | ||
4430 | s = name; | |
4431 | if (s[0] == 'n' && s[1] == 'o') | |
4432 | { | |
4433 | yesno = 0; | |
4434 | s += 2; | |
4435 | } | |
4436 | if (!strcmp ("reorder", s)) | |
4437 | /* ignore */ ; | |
4438 | else if (!strcmp ("at", s)) | |
4439 | alpha_noat_on = !yesno; | |
4440 | else if (!strcmp ("macro", s)) | |
4441 | alpha_macros_on = yesno; | |
4442 | else if (!strcmp ("move", s)) | |
4443 | /* ignore */ ; | |
4444 | else if (!strcmp ("volatile", s)) | |
4445 | /* ignore */ ; | |
4446 | else | |
4447 | as_warn (_("Tried to .set unrecognized mode `%s'"), name); | |
4448 | ||
4449 | *input_line_pointer = ch; | |
4450 | demand_empty_rest_of_line (); | |
4451 | } | |
4452 | ||
4453 | /* Handle the .base pseudo op. This changes the assembler's notion of | |
4454 | the $gp register. */ | |
4455 | ||
4456 | static void | |
ea1562b3 | 4457 | s_alpha_base (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 4458 | { |
252b5132 | 4459 | SKIP_WHITESPACE (); |
ea1562b3 | 4460 | |
252b5132 | 4461 | if (*input_line_pointer == '$') |
ea1562b3 NC |
4462 | { |
4463 | /* $rNN form. */ | |
252b5132 RH |
4464 | input_line_pointer++; |
4465 | if (*input_line_pointer == 'r') | |
4466 | input_line_pointer++; | |
4467 | } | |
4468 | ||
4469 | alpha_gp_register = get_absolute_expression (); | |
4470 | if (alpha_gp_register < 0 || alpha_gp_register > 31) | |
4471 | { | |
4472 | alpha_gp_register = AXP_REG_GP; | |
4473 | as_warn (_("Bad base register, using $%d."), alpha_gp_register); | |
4474 | } | |
4475 | ||
4476 | demand_empty_rest_of_line (); | |
4477 | } | |
4478 | ||
4479 | /* Handle the .align pseudo-op. This aligns to a power of two. It | |
4480 | also adjusts any current instruction label. We treat this the same | |
4481 | way the MIPS port does: .align 0 turns off auto alignment. */ | |
4482 | ||
4483 | static void | |
ea1562b3 | 4484 | s_alpha_align (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
4485 | { |
4486 | int align; | |
4487 | char fill, *pfill; | |
4488 | long max_alignment = 15; | |
4489 | ||
4490 | align = get_absolute_expression (); | |
4491 | if (align > max_alignment) | |
4492 | { | |
4493 | align = max_alignment; | |
4494 | as_bad (_("Alignment too large: %d. assumed"), align); | |
4495 | } | |
4496 | else if (align < 0) | |
4497 | { | |
4498 | as_warn (_("Alignment negative: 0 assumed")); | |
4499 | align = 0; | |
4500 | } | |
4501 | ||
4502 | if (*input_line_pointer == ',') | |
4503 | { | |
4504 | input_line_pointer++; | |
4505 | fill = get_absolute_expression (); | |
4506 | pfill = &fill; | |
4507 | } | |
4508 | else | |
4509 | pfill = NULL; | |
4510 | ||
4511 | if (align != 0) | |
4512 | { | |
4513 | alpha_auto_align_on = 1; | |
4514 | alpha_align (align, pfill, alpha_insn_label, 1); | |
4515 | } | |
4516 | else | |
4517 | { | |
4518 | alpha_auto_align_on = 0; | |
4519 | } | |
4520 | ||
4521 | demand_empty_rest_of_line (); | |
4522 | } | |
4523 | ||
4524 | /* Hook the normal string processor to reset known alignment. */ | |
4525 | ||
4526 | static void | |
ea1562b3 | 4527 | s_alpha_stringer (int terminate) |
252b5132 RH |
4528 | { |
4529 | alpha_current_align = 0; | |
4530 | alpha_insn_label = NULL; | |
38a57ae7 | 4531 | stringer (8 + terminate); |
252b5132 RH |
4532 | } |
4533 | ||
4534 | /* Hook the normal space processing to reset known alignment. */ | |
4535 | ||
4536 | static void | |
ea1562b3 | 4537 | s_alpha_space (int ignore) |
252b5132 RH |
4538 | { |
4539 | alpha_current_align = 0; | |
4540 | alpha_insn_label = NULL; | |
4541 | s_space (ignore); | |
4542 | } | |
4543 | ||
4544 | /* Hook into cons for auto-alignment. */ | |
4545 | ||
4546 | void | |
ea1562b3 | 4547 | alpha_cons_align (int size) |
252b5132 RH |
4548 | { |
4549 | int log_size; | |
4550 | ||
4551 | log_size = 0; | |
4552 | while ((size >>= 1) != 0) | |
4553 | ++log_size; | |
4554 | ||
4555 | if (alpha_auto_align_on && alpha_current_align < log_size) | |
4556 | alpha_align (log_size, (char *) NULL, alpha_insn_label, 0); | |
4557 | if (alpha_current_align > log_size) | |
4558 | alpha_current_align = log_size; | |
4559 | alpha_insn_label = NULL; | |
4560 | } | |
4561 | ||
4562 | /* Here come the .uword, .ulong, and .uquad explicitly unaligned | |
4563 | pseudos. We just turn off auto-alignment and call down to cons. */ | |
4564 | ||
4565 | static void | |
ea1562b3 | 4566 | s_alpha_ucons (int bytes) |
252b5132 RH |
4567 | { |
4568 | int hold = alpha_auto_align_on; | |
4569 | alpha_auto_align_on = 0; | |
4570 | cons (bytes); | |
4571 | alpha_auto_align_on = hold; | |
4572 | } | |
4573 | ||
4574 | /* Switch the working cpu type. */ | |
4575 | ||
4576 | static void | |
ea1562b3 | 4577 | s_alpha_arch (int ignored ATTRIBUTE_UNUSED) |
252b5132 RH |
4578 | { |
4579 | char *name, ch; | |
4580 | const struct cpu_type *p; | |
4581 | ||
4582 | SKIP_WHITESPACE (); | |
4583 | name = input_line_pointer; | |
4584 | ch = get_symbol_end (); | |
4585 | ||
4586 | for (p = cpu_types; p->name; ++p) | |
32ff5c2e | 4587 | if (strcmp (name, p->name) == 0) |
252b5132 | 4588 | { |
1aad8cf8 | 4589 | alpha_target_name = p->name, alpha_target = p->flags; |
252b5132 RH |
4590 | goto found; |
4591 | } | |
32ff5c2e | 4592 | as_warn ("Unknown CPU identifier `%s'", name); |
252b5132 RH |
4593 | |
4594 | found: | |
4595 | *input_line_pointer = ch; | |
4596 | demand_empty_rest_of_line (); | |
4597 | } | |
252b5132 | 4598 | \f |
252b5132 RH |
4599 | #ifdef DEBUG1 |
4600 | /* print token expression with alpha specific extension. */ | |
4601 | ||
4602 | static void | |
ea1562b3 | 4603 | alpha_print_token (FILE *f, const expressionS *exp) |
252b5132 RH |
4604 | { |
4605 | switch (exp->X_op) | |
4606 | { | |
1aad8cf8 KH |
4607 | case O_cpregister: |
4608 | putc (',', f); | |
4609 | /* FALLTHRU */ | |
4610 | case O_pregister: | |
4611 | putc ('(', f); | |
4612 | { | |
4613 | expressionS nexp = *exp; | |
4614 | nexp.X_op = O_register; | |
4615 | print_expr (f, &nexp); | |
4616 | } | |
4617 | putc (')', f); | |
4618 | break; | |
4619 | default: | |
4620 | print_expr (f, exp); | |
4621 | break; | |
252b5132 | 4622 | } |
252b5132 RH |
4623 | } |
4624 | #endif | |
4625 | \f | |
4626 | /* The target specific pseudo-ops which we support. */ | |
4627 | ||
ea1562b3 NC |
4628 | const pseudo_typeS md_pseudo_table[] = |
4629 | { | |
252b5132 | 4630 | #ifdef OBJ_ECOFF |
ea1562b3 | 4631 | {"comm", s_alpha_comm, 0}, /* OSF1 compiler does this. */ |
252b5132 RH |
4632 | {"rdata", s_alpha_rdata, 0}, |
4633 | #endif | |
4634 | {"text", s_alpha_text, 0}, | |
4635 | {"data", s_alpha_data, 0}, | |
4636 | #ifdef OBJ_ECOFF | |
4637 | {"sdata", s_alpha_sdata, 0}, | |
4638 | #endif | |
4639 | #ifdef OBJ_ELF | |
4640 | {"section", s_alpha_section, 0}, | |
4641 | {"section.s", s_alpha_section, 0}, | |
4642 | {"sect", s_alpha_section, 0}, | |
4643 | {"sect.s", s_alpha_section, 0}, | |
4644 | #endif | |
4645 | #ifdef OBJ_EVAX | |
4646 | { "pdesc", s_alpha_pdesc, 0}, | |
4647 | { "name", s_alpha_name, 0}, | |
4648 | { "linkage", s_alpha_linkage, 0}, | |
4649 | { "code_address", s_alpha_code_address, 0}, | |
4650 | { "ent", s_alpha_ent, 0}, | |
4651 | { "frame", s_alpha_frame, 0}, | |
4652 | { "fp_save", s_alpha_fp_save, 0}, | |
4653 | { "mask", s_alpha_mask, 0}, | |
4654 | { "fmask", s_alpha_fmask, 0}, | |
4655 | { "end", s_alpha_end, 0}, | |
4656 | { "file", s_alpha_file, 0}, | |
4657 | { "rdata", s_alpha_section, 1}, | |
4658 | { "comm", s_alpha_comm, 0}, | |
4659 | { "link", s_alpha_section, 3}, | |
4660 | { "ctors", s_alpha_section, 4}, | |
4661 | { "dtors", s_alpha_section, 5}, | |
4662 | #endif | |
4663 | #ifdef OBJ_ELF | |
4664 | /* Frame related pseudos. */ | |
4665 | {"ent", s_alpha_ent, 0}, | |
4666 | {"end", s_alpha_end, 0}, | |
4667 | {"mask", s_alpha_mask, 0}, | |
4668 | {"fmask", s_alpha_mask, 1}, | |
4669 | {"frame", s_alpha_frame, 0}, | |
4670 | {"prologue", s_alpha_prologue, 0}, | |
4dc7ead9 RH |
4671 | {"file", s_alpha_file, 5}, |
4672 | {"loc", s_alpha_loc, 9}, | |
a8316fe2 RH |
4673 | {"stabs", s_alpha_stab, 's'}, |
4674 | {"stabn", s_alpha_stab, 'n'}, | |
f4b97536 | 4675 | {"usepv", s_alpha_usepv, 0}, |
252b5132 RH |
4676 | /* COFF debugging related pseudos. */ |
4677 | {"begin", s_alpha_coff_wrapper, 0}, | |
4678 | {"bend", s_alpha_coff_wrapper, 1}, | |
4679 | {"def", s_alpha_coff_wrapper, 2}, | |
4680 | {"dim", s_alpha_coff_wrapper, 3}, | |
4681 | {"endef", s_alpha_coff_wrapper, 4}, | |
4dc7ead9 RH |
4682 | {"scl", s_alpha_coff_wrapper, 5}, |
4683 | {"tag", s_alpha_coff_wrapper, 6}, | |
4684 | {"val", s_alpha_coff_wrapper, 7}, | |
252b5132 RH |
4685 | #else |
4686 | {"prologue", s_ignore, 0}, | |
4687 | #endif | |
4688 | {"gprel32", s_alpha_gprel32, 0}, | |
4689 | {"t_floating", s_alpha_float_cons, 'd'}, | |
4690 | {"s_floating", s_alpha_float_cons, 'f'}, | |
4691 | {"f_floating", s_alpha_float_cons, 'F'}, | |
4692 | {"g_floating", s_alpha_float_cons, 'G'}, | |
4693 | {"d_floating", s_alpha_float_cons, 'D'}, | |
4694 | ||
4695 | {"proc", s_alpha_proc, 0}, | |
4696 | {"aproc", s_alpha_proc, 1}, | |
4697 | {"set", s_alpha_set, 0}, | |
4698 | {"reguse", s_ignore, 0}, | |
4699 | {"livereg", s_ignore, 0}, | |
4700 | {"base", s_alpha_base, 0}, /*??*/ | |
4701 | {"option", s_ignore, 0}, | |
4702 | {"aent", s_ignore, 0}, | |
4703 | {"ugen", s_ignore, 0}, | |
4704 | {"eflag", s_ignore, 0}, | |
4705 | ||
4706 | {"align", s_alpha_align, 0}, | |
4707 | {"double", s_alpha_float_cons, 'd'}, | |
4708 | {"float", s_alpha_float_cons, 'f'}, | |
4709 | {"single", s_alpha_float_cons, 'f'}, | |
4710 | {"ascii", s_alpha_stringer, 0}, | |
4711 | {"asciz", s_alpha_stringer, 1}, | |
4712 | {"string", s_alpha_stringer, 1}, | |
4713 | {"space", s_alpha_space, 0}, | |
4714 | {"skip", s_alpha_space, 0}, | |
4715 | {"zero", s_alpha_space, 0}, | |
4716 | ||
4717 | /* Unaligned data pseudos. */ | |
4718 | {"uword", s_alpha_ucons, 2}, | |
4719 | {"ulong", s_alpha_ucons, 4}, | |
4720 | {"uquad", s_alpha_ucons, 8}, | |
4721 | ||
4722 | #ifdef OBJ_ELF | |
4723 | /* Dwarf wants these versions of unaligned. */ | |
4724 | {"2byte", s_alpha_ucons, 2}, | |
4725 | {"4byte", s_alpha_ucons, 4}, | |
4726 | {"8byte", s_alpha_ucons, 8}, | |
4727 | #endif | |
4728 | ||
4729 | /* We don't do any optimizing, so we can safely ignore these. */ | |
4730 | {"noalias", s_ignore, 0}, | |
4731 | {"alias", s_ignore, 0}, | |
4732 | ||
4733 | {"arch", s_alpha_arch, 0}, | |
4734 | ||
4735 | {NULL, 0, 0}, | |
4736 | }; | |
252b5132 | 4737 | \f |
ea1562b3 | 4738 | #ifdef OBJ_ECOFF |
252b5132 | 4739 | |
ea1562b3 NC |
4740 | /* @@@ GP selection voodoo. All of this seems overly complicated and |
4741 | unnecessary; which is the primary reason it's for ECOFF only. */ | |
4742 | static inline void maybe_set_gp PARAMS ((asection *)); | |
4743 | ||
4744 | static inline void | |
4745 | maybe_set_gp (asection *sec) | |
252b5132 | 4746 | { |
ea1562b3 NC |
4747 | bfd_vma vma; |
4748 | ||
4749 | if (!sec) | |
4750 | return; | |
4751 | vma = bfd_get_section_vma (foo, sec); | |
4752 | if (vma && vma < alpha_gp_value) | |
4753 | alpha_gp_value = vma; | |
4754 | } | |
4755 | ||
4756 | static void | |
4757 | select_gp_value (void) | |
4758 | { | |
4759 | assert (alpha_gp_value == 0); | |
4760 | ||
4761 | /* Get minus-one in whatever width... */ | |
4762 | alpha_gp_value = 0; | |
4763 | alpha_gp_value--; | |
4764 | ||
4765 | /* Select the smallest VMA of these existing sections. */ | |
4766 | maybe_set_gp (alpha_lita_section); | |
4767 | ||
4768 | /* @@ Will a simple 0x8000 work here? If not, why not? */ | |
4769 | #define GP_ADJUSTMENT (0x8000 - 0x10) | |
4770 | ||
4771 | alpha_gp_value += GP_ADJUSTMENT; | |
4772 | ||
4773 | S_SET_VALUE (alpha_gp_symbol, alpha_gp_value); | |
4774 | ||
4775 | #ifdef DEBUG1 | |
4776 | printf (_("Chose GP value of %lx\n"), alpha_gp_value); | |
4777 | #endif | |
4778 | } | |
4779 | #endif /* OBJ_ECOFF */ | |
4780 | ||
4781 | #ifdef OBJ_ELF | |
4782 | /* Map 's' to SHF_ALPHA_GPREL. */ | |
4783 | ||
4784 | int | |
4785 | alpha_elf_section_letter (int letter, char **ptr_msg) | |
4786 | { | |
4787 | if (letter == 's') | |
4788 | return SHF_ALPHA_GPREL; | |
4789 | ||
4790 | *ptr_msg = _("Bad .section directive: want a,s,w,x,M,S,G,T in string"); | |
4791 | return -1; | |
4792 | } | |
4793 | ||
4794 | /* Map SHF_ALPHA_GPREL to SEC_SMALL_DATA. */ | |
4795 | ||
4796 | flagword | |
4797 | alpha_elf_section_flags (flagword flags, int attr, int type ATTRIBUTE_UNUSED) | |
4798 | { | |
4799 | if (attr & SHF_ALPHA_GPREL) | |
4800 | flags |= SEC_SMALL_DATA; | |
4801 | return flags; | |
4802 | } | |
4803 | #endif /* OBJ_ELF */ | |
4804 | ||
4805 | /* This is called from HANDLE_ALIGN in write.c. Fill in the contents | |
4806 | of an rs_align_code fragment. */ | |
4807 | ||
4808 | void | |
4809 | alpha_handle_align (fragS *fragp) | |
4810 | { | |
4811 | static char const unop[4] = { 0x00, 0x00, 0xfe, 0x2f }; | |
4812 | static char const nopunop[8] = | |
4813 | { | |
4814 | 0x1f, 0x04, 0xff, 0x47, | |
4815 | 0x00, 0x00, 0xfe, 0x2f | |
4816 | }; | |
4817 | ||
4818 | int bytes, fix; | |
4819 | char *p; | |
4820 | ||
4821 | if (fragp->fr_type != rs_align_code) | |
4822 | return; | |
4823 | ||
4824 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; | |
4825 | p = fragp->fr_literal + fragp->fr_fix; | |
4826 | fix = 0; | |
4827 | ||
4828 | if (bytes & 3) | |
4829 | { | |
4830 | fix = bytes & 3; | |
4831 | memset (p, 0, fix); | |
4832 | p += fix; | |
4833 | bytes -= fix; | |
4834 | } | |
4835 | ||
4836 | if (bytes & 4) | |
4837 | { | |
4838 | memcpy (p, unop, 4); | |
4839 | p += 4; | |
4840 | bytes -= 4; | |
4841 | fix += 4; | |
4842 | } | |
4843 | ||
4844 | memcpy (p, nopunop, 8); | |
4845 | ||
4846 | fragp->fr_fix += fix; | |
4847 | fragp->fr_var = 8; | |
4848 | } | |
4849 | \f | |
4850 | /* Public interface functions. */ | |
4851 | ||
4852 | /* This function is called once, at assembler startup time. It sets | |
4853 | up all the tables, etc. that the MD part of the assembler will | |
4854 | need, that can be determined before arguments are parsed. */ | |
4855 | ||
4856 | void | |
4857 | md_begin (void) | |
4858 | { | |
4859 | unsigned int i; | |
4860 | ||
4861 | /* Verify that X_op field is wide enough. */ | |
4862 | { | |
4863 | expressionS e; | |
4864 | ||
4865 | e.X_op = O_max; | |
4866 | assert (e.X_op == O_max); | |
4867 | } | |
4868 | ||
4869 | /* Create the opcode hash table. */ | |
4870 | alpha_opcode_hash = hash_new (); | |
4871 | ||
4872 | for (i = 0; i < alpha_num_opcodes;) | |
4873 | { | |
4874 | const char *name, *retval, *slash; | |
4875 | ||
4876 | name = alpha_opcodes[i].name; | |
4877 | retval = hash_insert (alpha_opcode_hash, name, (void *) &alpha_opcodes[i]); | |
4878 | if (retval) | |
4879 | as_fatal (_("internal error: can't hash opcode `%s': %s"), | |
4880 | name, retval); | |
4881 | ||
4882 | /* Some opcodes include modifiers of various sorts with a "/mod" | |
4883 | syntax, like the architecture manual suggests. However, for | |
4884 | use with gcc at least, we also need access to those same opcodes | |
4885 | without the "/". */ | |
4886 | ||
4887 | if ((slash = strchr (name, '/')) != NULL) | |
4888 | { | |
4889 | char *p = xmalloc (strlen (name)); | |
4890 | ||
4891 | memcpy (p, name, slash - name); | |
4892 | strcpy (p + (slash - name), slash + 1); | |
4893 | ||
4894 | (void) hash_insert (alpha_opcode_hash, p, (void *) &alpha_opcodes[i]); | |
4895 | /* Ignore failures -- the opcode table does duplicate some | |
4896 | variants in different forms, like "hw_stq" and "hw_st/q". */ | |
4897 | } | |
4898 | ||
4899 | while (++i < alpha_num_opcodes | |
4900 | && (alpha_opcodes[i].name == name | |
4901 | || !strcmp (alpha_opcodes[i].name, name))) | |
4902 | continue; | |
4903 | } | |
4904 | ||
4905 | /* Create the macro hash table. */ | |
4906 | alpha_macro_hash = hash_new (); | |
4907 | ||
4908 | for (i = 0; i < alpha_num_macros;) | |
4909 | { | |
4910 | const char *name, *retval; | |
4911 | ||
4912 | name = alpha_macros[i].name; | |
4913 | retval = hash_insert (alpha_macro_hash, name, (void *) &alpha_macros[i]); | |
4914 | if (retval) | |
4915 | as_fatal (_("internal error: can't hash macro `%s': %s"), | |
4916 | name, retval); | |
4917 | ||
4918 | while (++i < alpha_num_macros | |
4919 | && (alpha_macros[i].name == name | |
4920 | || !strcmp (alpha_macros[i].name, name))) | |
4921 | continue; | |
4922 | } | |
4923 | ||
4924 | /* Construct symbols for each of the registers. */ | |
4925 | for (i = 0; i < 32; ++i) | |
4926 | { | |
4927 | char name[4]; | |
4928 | ||
4929 | sprintf (name, "$%d", i); | |
4930 | alpha_register_table[i] = symbol_create (name, reg_section, i, | |
4931 | &zero_address_frag); | |
4932 | } | |
4933 | ||
4934 | for (; i < 64; ++i) | |
4935 | { | |
4936 | char name[5]; | |
4937 | ||
4938 | sprintf (name, "$f%d", i - 32); | |
4939 | alpha_register_table[i] = symbol_create (name, reg_section, i, | |
4940 | &zero_address_frag); | |
4941 | } | |
4942 | ||
4943 | /* Create the special symbols and sections we'll be using. */ | |
4944 | ||
4945 | /* So .sbss will get used for tiny objects. */ | |
4946 | bfd_set_gp_size (stdoutput, g_switch_value); | |
4947 | ||
4948 | #ifdef OBJ_ECOFF | |
4949 | create_literal_section (".lita", &alpha_lita_section, &alpha_lita_symbol); | |
4950 | ||
4951 | /* For handling the GP, create a symbol that won't be output in the | |
4952 | symbol table. We'll edit it out of relocs later. */ | |
4953 | alpha_gp_symbol = symbol_create ("<GP value>", alpha_lita_section, 0x8000, | |
4954 | &zero_address_frag); | |
4955 | #endif | |
4956 | ||
4957 | #ifdef OBJ_EVAX | |
4958 | create_literal_section (".link", &alpha_link_section, &alpha_link_symbol); | |
4959 | #endif | |
4960 | ||
4961 | #ifdef OBJ_ELF | |
4962 | if (ECOFF_DEBUGGING) | |
4963 | { | |
4964 | segT sec = subseg_new (".mdebug", (subsegT) 0); | |
4965 | bfd_set_section_flags (stdoutput, sec, SEC_HAS_CONTENTS | SEC_READONLY); | |
4966 | bfd_set_section_alignment (stdoutput, sec, 3); | |
4967 | } | |
4968 | #endif | |
4969 | ||
4970 | /* Create literal lookup hash table. */ | |
4971 | alpha_literal_hash = hash_new (); | |
4972 | ||
4973 | subseg_set (text_section, 0); | |
4974 | } | |
4975 | ||
4976 | /* The public interface to the instruction assembler. */ | |
4977 | ||
4978 | void | |
4979 | md_assemble (char *str) | |
4980 | { | |
4981 | /* Current maximum is 13. */ | |
4982 | char opname[32]; | |
4983 | expressionS tok[MAX_INSN_ARGS]; | |
4984 | int ntok, trunclen; | |
4985 | size_t opnamelen; | |
4986 | ||
4987 | /* Split off the opcode. */ | |
4988 | opnamelen = strspn (str, "abcdefghijklmnopqrstuvwxyz_/46819"); | |
4989 | trunclen = (opnamelen < sizeof (opname) - 1 | |
4990 | ? opnamelen | |
4991 | : sizeof (opname) - 1); | |
4992 | memcpy (opname, str, trunclen); | |
4993 | opname[trunclen] = '\0'; | |
4994 | ||
4995 | /* Tokenize the rest of the line. */ | |
4996 | if ((ntok = tokenize_arguments (str + opnamelen, tok, MAX_INSN_ARGS)) < 0) | |
4997 | { | |
4998 | if (ntok != TOKENIZE_ERROR_REPORT) | |
4999 | as_bad (_("syntax error")); | |
5000 | ||
5001 | return; | |
5002 | } | |
5003 | ||
5004 | /* Finish it off. */ | |
5005 | assemble_tokens (opname, tok, ntok, alpha_macros_on); | |
5006 | } | |
5007 | ||
5008 | /* Round up a section's size to the appropriate boundary. */ | |
5009 | ||
5010 | valueT | |
5011 | md_section_align (segT seg, valueT size) | |
5012 | { | |
5013 | int align = bfd_get_section_alignment (stdoutput, seg); | |
5014 | valueT mask = ((valueT) 1 << align) - 1; | |
5015 | ||
5016 | return (size + mask) & ~mask; | |
5017 | } | |
5018 | ||
5019 | /* Turn a string in input_line_pointer into a floating point constant | |
5020 | of type TYPE, and store the appropriate bytes in *LITP. The number | |
5021 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
5022 | returned, or NULL on OK. */ | |
5023 | ||
ea1562b3 NC |
5024 | char * |
5025 | md_atof (int type, char *litP, int *sizeP) | |
5026 | { | |
499ac353 | 5027 | extern char *vax_md_atof (int, char *, int *); |
ea1562b3 NC |
5028 | |
5029 | switch (type) | |
5030 | { | |
5031 | /* VAX floats. */ | |
5032 | case 'G': | |
499ac353 | 5033 | /* vax_md_atof() doesn't like "G" for some reason. */ |
ea1562b3 NC |
5034 | type = 'g'; |
5035 | case 'F': | |
5036 | case 'D': | |
5037 | return vax_md_atof (type, litP, sizeP); | |
5038 | ||
ea1562b3 | 5039 | default: |
499ac353 | 5040 | return ieee_md_atof (type, litP, sizeP, FALSE); |
ea1562b3 | 5041 | } |
ea1562b3 NC |
5042 | } |
5043 | ||
5044 | /* Take care of the target-specific command-line options. */ | |
5045 | ||
5046 | int | |
5047 | md_parse_option (int c, char *arg) | |
5048 | { | |
5049 | switch (c) | |
5050 | { | |
5051 | case 'F': | |
5052 | alpha_nofloats_on = 1; | |
5053 | break; | |
5054 | ||
5055 | case OPTION_32ADDR: | |
5056 | alpha_addr32_on = 1; | |
5057 | break; | |
5058 | ||
5059 | case 'g': | |
5060 | alpha_debug = 1; | |
5061 | break; | |
5062 | ||
5063 | case 'G': | |
5064 | g_switch_value = atoi (arg); | |
5065 | break; | |
5066 | ||
5067 | case 'm': | |
5068 | { | |
5069 | const struct cpu_type *p; | |
5070 | ||
5071 | for (p = cpu_types; p->name; ++p) | |
5072 | if (strcmp (arg, p->name) == 0) | |
5073 | { | |
5074 | alpha_target_name = p->name, alpha_target = p->flags; | |
5075 | goto found; | |
5076 | } | |
5077 | as_warn (_("Unknown CPU identifier `%s'"), arg); | |
5078 | found:; | |
5079 | } | |
5080 | break; | |
5081 | ||
5082 | #ifdef OBJ_EVAX | |
5083 | case '+': /* For g++. Hash any name > 63 chars long. */ | |
5084 | alpha_flag_hash_long_names = 1; | |
5085 | break; | |
5086 | ||
5087 | case 'H': /* Show new symbol after hash truncation. */ | |
5088 | alpha_flag_show_after_trunc = 1; | |
5089 | break; | |
5090 | ||
5091 | case 'h': /* For gnu-c/vax compatibility. */ | |
5092 | break; | |
5093 | #endif | |
5094 | ||
5095 | case OPTION_RELAX: | |
5096 | alpha_flag_relax = 1; | |
5097 | break; | |
5098 | ||
5099 | #ifdef OBJ_ELF | |
5100 | case OPTION_MDEBUG: | |
5101 | alpha_flag_mdebug = 1; | |
5102 | break; | |
5103 | case OPTION_NO_MDEBUG: | |
5104 | alpha_flag_mdebug = 0; | |
5105 | break; | |
5106 | #endif | |
5107 | ||
5108 | default: | |
5109 | return 0; | |
5110 | } | |
5111 | ||
5112 | return 1; | |
5113 | } | |
5114 | ||
5115 | /* Print a description of the command-line options that we accept. */ | |
5116 | ||
5117 | void | |
5118 | md_show_usage (FILE *stream) | |
5119 | { | |
5120 | fputs (_("\ | |
5121 | Alpha options:\n\ | |
5122 | -32addr treat addresses as 32-bit values\n\ | |
5123 | -F lack floating point instructions support\n\ | |
5124 | -mev4 | -mev45 | -mev5 | -mev56 | -mpca56 | -mev6 | -mev67 | -mev68 | -mall\n\ | |
5125 | specify variant of Alpha architecture\n\ | |
5126 | -m21064 | -m21066 | -m21164 | -m21164a | -m21164pc | -m21264 | -m21264a | -m21264b\n\ | |
5127 | these variants include PALcode opcodes\n"), | |
5128 | stream); | |
5129 | #ifdef OBJ_EVAX | |
5130 | fputs (_("\ | |
5131 | VMS options:\n\ | |
5132 | -+ hash encode (don't truncate) names longer than 64 characters\n\ | |
5133 | -H show new symbol after hash truncation\n"), | |
5134 | stream); | |
5135 | #endif | |
5136 | } | |
5137 | ||
5138 | /* Decide from what point a pc-relative relocation is relative to, | |
5139 | relative to the pc-relative fixup. Er, relatively speaking. */ | |
5140 | ||
5141 | long | |
5142 | md_pcrel_from (fixS *fixP) | |
5143 | { | |
5144 | valueT addr = fixP->fx_where + fixP->fx_frag->fr_address; | |
5145 | ||
5146 | switch (fixP->fx_r_type) | |
5147 | { | |
5148 | case BFD_RELOC_23_PCREL_S2: | |
5149 | case BFD_RELOC_ALPHA_HINT: | |
5150 | case BFD_RELOC_ALPHA_BRSGP: | |
5151 | return addr + 4; | |
5152 | default: | |
5153 | return addr; | |
5154 | } | |
5155 | } | |
5156 | ||
5157 | /* Attempt to simplify or even eliminate a fixup. The return value is | |
5158 | ignored; perhaps it was once meaningful, but now it is historical. | |
5159 | To indicate that a fixup has been eliminated, set fixP->fx_done. | |
5160 | ||
5161 | For ELF, here it is that we transform the GPDISP_HI16 reloc we used | |
5162 | internally into the GPDISP reloc used externally. We had to do | |
5163 | this so that we'd have the GPDISP_LO16 reloc as a tag to compute | |
5164 | the distance to the "lda" instruction for setting the addend to | |
5165 | GPDISP. */ | |
5166 | ||
5167 | void | |
55cf6793 | 5168 | md_apply_fix (fixS *fixP, valueT * valP, segT seg) |
ea1562b3 NC |
5169 | { |
5170 | char * const fixpos = fixP->fx_frag->fr_literal + fixP->fx_where; | |
5171 | valueT value = * valP; | |
5172 | unsigned image, size; | |
5173 | ||
5174 | switch (fixP->fx_r_type) | |
5175 | { | |
5176 | /* The GPDISP relocations are processed internally with a symbol | |
5177 | referring to the current function's section; we need to drop | |
5178 | in a value which, when added to the address of the start of | |
5179 | the function, gives the desired GP. */ | |
5180 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
5181 | { | |
5182 | fixS *next = fixP->fx_next; | |
5183 | ||
5184 | /* With user-specified !gpdisp relocations, we can be missing | |
5185 | the matching LO16 reloc. We will have already issued an | |
5186 | error message. */ | |
5187 | if (next) | |
5188 | fixP->fx_offset = (next->fx_frag->fr_address + next->fx_where | |
5189 | - fixP->fx_frag->fr_address - fixP->fx_where); | |
5190 | ||
5191 | value = (value - sign_extend_16 (value)) >> 16; | |
5192 | } | |
5193 | #ifdef OBJ_ELF | |
5194 | fixP->fx_r_type = BFD_RELOC_ALPHA_GPDISP; | |
5195 | #endif | |
5196 | goto do_reloc_gp; | |
5197 | ||
5198 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
5199 | value = sign_extend_16 (value); | |
5200 | fixP->fx_offset = 0; | |
5201 | #ifdef OBJ_ELF | |
5202 | fixP->fx_done = 1; | |
5203 | #endif | |
5204 | ||
5205 | do_reloc_gp: | |
5206 | fixP->fx_addsy = section_symbol (seg); | |
5207 | md_number_to_chars (fixpos, value, 2); | |
5208 | break; | |
5209 | ||
5210 | case BFD_RELOC_16: | |
5211 | if (fixP->fx_pcrel) | |
5212 | fixP->fx_r_type = BFD_RELOC_16_PCREL; | |
5213 | size = 2; | |
5214 | goto do_reloc_xx; | |
5215 | ||
5216 | case BFD_RELOC_32: | |
5217 | if (fixP->fx_pcrel) | |
5218 | fixP->fx_r_type = BFD_RELOC_32_PCREL; | |
5219 | size = 4; | |
5220 | goto do_reloc_xx; | |
5221 | ||
5222 | case BFD_RELOC_64: | |
5223 | if (fixP->fx_pcrel) | |
5224 | fixP->fx_r_type = BFD_RELOC_64_PCREL; | |
5225 | size = 8; | |
5226 | ||
5227 | do_reloc_xx: | |
5228 | if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0) | |
5229 | { | |
5230 | md_number_to_chars (fixpos, value, size); | |
5231 | goto done; | |
5232 | } | |
5233 | return; | |
5234 | ||
5235 | #ifdef OBJ_ECOFF | |
5236 | case BFD_RELOC_GPREL32: | |
5237 | assert (fixP->fx_subsy == alpha_gp_symbol); | |
5238 | fixP->fx_subsy = 0; | |
5239 | /* FIXME: inherited this obliviousness of `value' -- why? */ | |
5240 | md_number_to_chars (fixpos, -alpha_gp_value, 4); | |
5241 | break; | |
5242 | #else | |
5243 | case BFD_RELOC_GPREL32: | |
5244 | #endif | |
5245 | case BFD_RELOC_GPREL16: | |
5246 | case BFD_RELOC_ALPHA_GPREL_HI16: | |
5247 | case BFD_RELOC_ALPHA_GPREL_LO16: | |
5248 | return; | |
5249 | ||
5250 | case BFD_RELOC_23_PCREL_S2: | |
5251 | if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0) | |
5252 | { | |
5253 | image = bfd_getl32 (fixpos); | |
5254 | image = (image & ~0x1FFFFF) | ((value >> 2) & 0x1FFFFF); | |
5255 | goto write_done; | |
5256 | } | |
5257 | return; | |
5258 | ||
5259 | case BFD_RELOC_ALPHA_HINT: | |
5260 | if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0) | |
5261 | { | |
5262 | image = bfd_getl32 (fixpos); | |
5263 | image = (image & ~0x3FFF) | ((value >> 2) & 0x3FFF); | |
5264 | goto write_done; | |
5265 | } | |
5266 | return; | |
5267 | ||
5268 | #ifdef OBJ_ELF | |
5269 | case BFD_RELOC_ALPHA_BRSGP: | |
5270 | return; | |
5271 | ||
5272 | case BFD_RELOC_ALPHA_TLSGD: | |
5273 | case BFD_RELOC_ALPHA_TLSLDM: | |
5274 | case BFD_RELOC_ALPHA_GOTDTPREL16: | |
5275 | case BFD_RELOC_ALPHA_DTPREL_HI16: | |
5276 | case BFD_RELOC_ALPHA_DTPREL_LO16: | |
5277 | case BFD_RELOC_ALPHA_DTPREL16: | |
5278 | case BFD_RELOC_ALPHA_GOTTPREL16: | |
5279 | case BFD_RELOC_ALPHA_TPREL_HI16: | |
5280 | case BFD_RELOC_ALPHA_TPREL_LO16: | |
5281 | case BFD_RELOC_ALPHA_TPREL16: | |
5282 | if (fixP->fx_addsy) | |
5283 | S_SET_THREAD_LOCAL (fixP->fx_addsy); | |
5284 | return; | |
5285 | #endif | |
5286 | ||
5287 | #ifdef OBJ_ECOFF | |
5288 | case BFD_RELOC_ALPHA_LITERAL: | |
5289 | md_number_to_chars (fixpos, value, 2); | |
5290 | return; | |
5291 | #endif | |
5292 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
5293 | case BFD_RELOC_ALPHA_LITUSE: | |
5294 | case BFD_RELOC_ALPHA_LINKAGE: | |
5295 | case BFD_RELOC_ALPHA_CODEADDR: | |
5296 | return; | |
5297 | ||
5298 | case BFD_RELOC_VTABLE_INHERIT: | |
5299 | case BFD_RELOC_VTABLE_ENTRY: | |
5300 | return; | |
5301 | ||
5302 | default: | |
5303 | { | |
5304 | const struct alpha_operand *operand; | |
5305 | ||
5306 | if ((int) fixP->fx_r_type >= 0) | |
5307 | as_fatal (_("unhandled relocation type %s"), | |
5308 | bfd_get_reloc_code_name (fixP->fx_r_type)); | |
5309 | ||
5310 | assert (-(int) fixP->fx_r_type < (int) alpha_num_operands); | |
5311 | operand = &alpha_operands[-(int) fixP->fx_r_type]; | |
5312 | ||
5313 | /* The rest of these fixups only exist internally during symbol | |
5314 | resolution and have no representation in the object file. | |
5315 | Therefore they must be completely resolved as constants. */ | |
5316 | ||
5317 | if (fixP->fx_addsy != 0 | |
5318 | && S_GET_SEGMENT (fixP->fx_addsy) != absolute_section) | |
5319 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
5320 | _("non-absolute expression in constant field")); | |
5321 | ||
5322 | image = bfd_getl32 (fixpos); | |
5323 | image = insert_operand (image, operand, (offsetT) value, | |
5324 | fixP->fx_file, fixP->fx_line); | |
5325 | } | |
5326 | goto write_done; | |
5327 | } | |
5328 | ||
5329 | if (fixP->fx_addsy != 0 || fixP->fx_pcrel != 0) | |
5330 | return; | |
5331 | else | |
5332 | { | |
5333 | as_warn_where (fixP->fx_file, fixP->fx_line, | |
5334 | _("type %d reloc done?\n"), (int) fixP->fx_r_type); | |
5335 | goto done; | |
5336 | } | |
5337 | ||
5338 | write_done: | |
5339 | md_number_to_chars (fixpos, image, 4); | |
5340 | ||
5341 | done: | |
5342 | fixP->fx_done = 1; | |
5343 | } | |
5344 | ||
5345 | /* Look for a register name in the given symbol. */ | |
5346 | ||
5347 | symbolS * | |
5348 | md_undefined_symbol (char *name) | |
5349 | { | |
5350 | if (*name == '$') | |
5351 | { | |
5352 | int is_float = 0, num; | |
5353 | ||
5354 | switch (*++name) | |
5355 | { | |
5356 | case 'f': | |
5357 | if (name[1] == 'p' && name[2] == '\0') | |
5358 | return alpha_register_table[AXP_REG_FP]; | |
5359 | is_float = 32; | |
5360 | /* Fall through. */ | |
5361 | ||
5362 | case 'r': | |
5363 | if (!ISDIGIT (*++name)) | |
5364 | break; | |
5365 | /* Fall through. */ | |
5366 | ||
5367 | case '0': case '1': case '2': case '3': case '4': | |
5368 | case '5': case '6': case '7': case '8': case '9': | |
5369 | if (name[1] == '\0') | |
5370 | num = name[0] - '0'; | |
5371 | else if (name[0] != '0' && ISDIGIT (name[1]) && name[2] == '\0') | |
5372 | { | |
5373 | num = (name[0] - '0') * 10 + name[1] - '0'; | |
5374 | if (num >= 32) | |
5375 | break; | |
5376 | } | |
5377 | else | |
5378 | break; | |
5379 | ||
5380 | if (!alpha_noat_on && (num + is_float) == AXP_REG_AT) | |
5381 | as_warn (_("Used $at without \".set noat\"")); | |
5382 | return alpha_register_table[num + is_float]; | |
5383 | ||
5384 | case 'a': | |
5385 | if (name[1] == 't' && name[2] == '\0') | |
5386 | { | |
5387 | if (!alpha_noat_on) | |
5388 | as_warn (_("Used $at without \".set noat\"")); | |
5389 | return alpha_register_table[AXP_REG_AT]; | |
5390 | } | |
5391 | break; | |
5392 | ||
5393 | case 'g': | |
5394 | if (name[1] == 'p' && name[2] == '\0') | |
5395 | return alpha_register_table[alpha_gp_register]; | |
5396 | break; | |
5397 | ||
5398 | case 's': | |
5399 | if (name[1] == 'p' && name[2] == '\0') | |
5400 | return alpha_register_table[AXP_REG_SP]; | |
5401 | break; | |
5402 | } | |
5403 | } | |
5404 | return NULL; | |
5405 | } | |
5406 | ||
5407 | #ifdef OBJ_ECOFF | |
5408 | /* @@@ Magic ECOFF bits. */ | |
5409 | ||
5410 | void | |
5411 | alpha_frob_ecoff_data (void) | |
5412 | { | |
5413 | select_gp_value (); | |
5414 | /* $zero and $f31 are read-only. */ | |
5415 | alpha_gprmask &= ~1; | |
5416 | alpha_fprmask &= ~1; | |
5417 | } | |
5418 | #endif | |
5419 | ||
5420 | /* Hook to remember a recently defined label so that the auto-align | |
5421 | code can adjust the symbol after we know what alignment will be | |
5422 | required. */ | |
5423 | ||
5424 | void | |
5425 | alpha_define_label (symbolS *sym) | |
5426 | { | |
5427 | alpha_insn_label = sym; | |
07a53e5c RH |
5428 | #ifdef OBJ_ELF |
5429 | dwarf2_emit_label (sym); | |
5430 | #endif | |
ea1562b3 NC |
5431 | } |
5432 | ||
5433 | /* Return true if we must always emit a reloc for a type and false if | |
5434 | there is some hope of resolving it at assembly time. */ | |
5435 | ||
5436 | int | |
5437 | alpha_force_relocation (fixS *f) | |
5438 | { | |
5439 | if (alpha_flag_relax) | |
5440 | return 1; | |
5441 | ||
5442 | switch (f->fx_r_type) | |
5443 | { | |
5444 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
5445 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
5446 | case BFD_RELOC_ALPHA_GPDISP: | |
5447 | case BFD_RELOC_ALPHA_LITERAL: | |
5448 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
5449 | case BFD_RELOC_ALPHA_LITUSE: | |
5450 | case BFD_RELOC_GPREL16: | |
5451 | case BFD_RELOC_GPREL32: | |
5452 | case BFD_RELOC_ALPHA_GPREL_HI16: | |
5453 | case BFD_RELOC_ALPHA_GPREL_LO16: | |
5454 | case BFD_RELOC_ALPHA_LINKAGE: | |
5455 | case BFD_RELOC_ALPHA_CODEADDR: | |
5456 | case BFD_RELOC_ALPHA_BRSGP: | |
5457 | case BFD_RELOC_ALPHA_TLSGD: | |
5458 | case BFD_RELOC_ALPHA_TLSLDM: | |
5459 | case BFD_RELOC_ALPHA_GOTDTPREL16: | |
5460 | case BFD_RELOC_ALPHA_DTPREL_HI16: | |
5461 | case BFD_RELOC_ALPHA_DTPREL_LO16: | |
5462 | case BFD_RELOC_ALPHA_DTPREL16: | |
5463 | case BFD_RELOC_ALPHA_GOTTPREL16: | |
5464 | case BFD_RELOC_ALPHA_TPREL_HI16: | |
5465 | case BFD_RELOC_ALPHA_TPREL_LO16: | |
5466 | case BFD_RELOC_ALPHA_TPREL16: | |
5467 | return 1; | |
252b5132 | 5468 | |
ea1562b3 NC |
5469 | default: |
5470 | break; | |
5471 | } | |
252b5132 | 5472 | |
ea1562b3 | 5473 | return generic_force_reloc (f); |
252b5132 RH |
5474 | } |
5475 | ||
ea1562b3 | 5476 | /* Return true if we can partially resolve a relocation now. */ |
252b5132 | 5477 | |
ea1562b3 NC |
5478 | int |
5479 | alpha_fix_adjustable (fixS *f) | |
252b5132 | 5480 | { |
ea1562b3 NC |
5481 | /* Are there any relocation types for which we must generate a |
5482 | reloc but we can adjust the values contained within it? */ | |
5483 | switch (f->fx_r_type) | |
5484 | { | |
5485 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
5486 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
5487 | case BFD_RELOC_ALPHA_GPDISP: | |
5488 | return 0; | |
252b5132 | 5489 | |
ea1562b3 NC |
5490 | case BFD_RELOC_ALPHA_LITERAL: |
5491 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
5492 | case BFD_RELOC_ALPHA_LITUSE: | |
5493 | case BFD_RELOC_ALPHA_LINKAGE: | |
5494 | case BFD_RELOC_ALPHA_CODEADDR: | |
5495 | return 1; | |
252b5132 | 5496 | |
ea1562b3 NC |
5497 | case BFD_RELOC_VTABLE_ENTRY: |
5498 | case BFD_RELOC_VTABLE_INHERIT: | |
5499 | return 0; | |
252b5132 | 5500 | |
ea1562b3 NC |
5501 | case BFD_RELOC_GPREL16: |
5502 | case BFD_RELOC_GPREL32: | |
5503 | case BFD_RELOC_ALPHA_GPREL_HI16: | |
5504 | case BFD_RELOC_ALPHA_GPREL_LO16: | |
5505 | case BFD_RELOC_23_PCREL_S2: | |
5506 | case BFD_RELOC_32: | |
5507 | case BFD_RELOC_64: | |
5508 | case BFD_RELOC_ALPHA_HINT: | |
5509 | return 1; | |
252b5132 | 5510 | |
ea1562b3 NC |
5511 | case BFD_RELOC_ALPHA_TLSGD: |
5512 | case BFD_RELOC_ALPHA_TLSLDM: | |
5513 | case BFD_RELOC_ALPHA_GOTDTPREL16: | |
5514 | case BFD_RELOC_ALPHA_DTPREL_HI16: | |
5515 | case BFD_RELOC_ALPHA_DTPREL_LO16: | |
5516 | case BFD_RELOC_ALPHA_DTPREL16: | |
5517 | case BFD_RELOC_ALPHA_GOTTPREL16: | |
5518 | case BFD_RELOC_ALPHA_TPREL_HI16: | |
5519 | case BFD_RELOC_ALPHA_TPREL_LO16: | |
5520 | case BFD_RELOC_ALPHA_TPREL16: | |
5521 | /* ??? No idea why we can't return a reference to .tbss+10, but | |
5522 | we're preventing this in the other assemblers. Follow for now. */ | |
5523 | return 0; | |
252b5132 | 5524 | |
ea1562b3 NC |
5525 | #ifdef OBJ_ELF |
5526 | case BFD_RELOC_ALPHA_BRSGP: | |
5527 | /* If we have a BRSGP reloc to a local symbol, adjust it to BRADDR and | |
5528 | let it get resolved at assembly time. */ | |
5529 | { | |
5530 | symbolS *sym = f->fx_addsy; | |
5531 | const char *name; | |
5532 | int offset = 0; | |
252b5132 | 5533 | |
ea1562b3 NC |
5534 | if (generic_force_reloc (f)) |
5535 | return 0; | |
252b5132 | 5536 | |
ea1562b3 NC |
5537 | switch (S_GET_OTHER (sym) & STO_ALPHA_STD_GPLOAD) |
5538 | { | |
5539 | case STO_ALPHA_NOPV: | |
5540 | break; | |
5541 | case STO_ALPHA_STD_GPLOAD: | |
5542 | offset = 8; | |
5543 | break; | |
5544 | default: | |
5545 | if (S_IS_LOCAL (sym)) | |
5546 | name = "<local>"; | |
5547 | else | |
5548 | name = S_GET_NAME (sym); | |
5549 | as_bad_where (f->fx_file, f->fx_line, | |
5550 | _("!samegp reloc against symbol without .prologue: %s"), | |
5551 | name); | |
5552 | break; | |
5553 | } | |
5554 | f->fx_r_type = BFD_RELOC_23_PCREL_S2; | |
5555 | f->fx_offset += offset; | |
5556 | return 1; | |
5557 | } | |
252b5132 | 5558 | #endif |
d61a78a7 | 5559 | |
ea1562b3 NC |
5560 | default: |
5561 | return 1; | |
5562 | } | |
d61a78a7 RH |
5563 | } |
5564 | ||
ea1562b3 NC |
5565 | /* Generate the BFD reloc to be stuck in the object file from the |
5566 | fixup used internally in the assembler. */ | |
d61a78a7 | 5567 | |
ea1562b3 NC |
5568 | arelent * |
5569 | tc_gen_reloc (asection *sec ATTRIBUTE_UNUSED, | |
5570 | fixS *fixp) | |
d61a78a7 | 5571 | { |
ea1562b3 | 5572 | arelent *reloc; |
d61a78a7 | 5573 | |
ea1562b3 NC |
5574 | reloc = xmalloc (sizeof (* reloc)); |
5575 | reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *)); | |
5576 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
5577 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
252b5132 | 5578 | |
ea1562b3 NC |
5579 | /* Make sure none of our internal relocations make it this far. |
5580 | They'd better have been fully resolved by this point. */ | |
5581 | assert ((int) fixp->fx_r_type > 0); | |
252b5132 | 5582 | |
ea1562b3 NC |
5583 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); |
5584 | if (reloc->howto == NULL) | |
252b5132 | 5585 | { |
ea1562b3 NC |
5586 | as_bad_where (fixp->fx_file, fixp->fx_line, |
5587 | _("cannot represent `%s' relocation in object file"), | |
5588 | bfd_get_reloc_code_name (fixp->fx_r_type)); | |
5589 | return NULL; | |
252b5132 | 5590 | } |
252b5132 | 5591 | |
ea1562b3 NC |
5592 | if (!fixp->fx_pcrel != !reloc->howto->pc_relative) |
5593 | as_fatal (_("internal error? cannot generate `%s' relocation"), | |
5594 | bfd_get_reloc_code_name (fixp->fx_r_type)); | |
252b5132 | 5595 | |
ea1562b3 NC |
5596 | assert (!fixp->fx_pcrel == !reloc->howto->pc_relative); |
5597 | ||
5598 | #ifdef OBJ_ECOFF | |
5599 | if (fixp->fx_r_type == BFD_RELOC_ALPHA_LITERAL) | |
5600 | /* Fake out bfd_perform_relocation. sigh. */ | |
5601 | reloc->addend = -alpha_gp_value; | |
5602 | else | |
5603 | #endif | |
252b5132 | 5604 | { |
ea1562b3 NC |
5605 | reloc->addend = fixp->fx_offset; |
5606 | #ifdef OBJ_ELF | |
5607 | /* Ohhh, this is ugly. The problem is that if this is a local global | |
5608 | symbol, the relocation will entirely be performed at link time, not | |
5609 | at assembly time. bfd_perform_reloc doesn't know about this sort | |
5610 | of thing, and as a result we need to fake it out here. */ | |
e97b3f28 | 5611 | if ((S_IS_EXTERNAL (fixp->fx_addsy) || S_IS_WEAK (fixp->fx_addsy) |
ea1562b3 NC |
5612 | || (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE) |
5613 | || (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_THREAD_LOCAL)) | |
5614 | && !S_IS_COMMON (fixp->fx_addsy)) | |
5615 | reloc->addend -= symbol_get_bfdsym (fixp->fx_addsy)->value; | |
5616 | #endif | |
252b5132 RH |
5617 | } |
5618 | ||
ea1562b3 | 5619 | return reloc; |
252b5132 RH |
5620 | } |
5621 | ||
ea1562b3 NC |
5622 | /* Parse a register name off of the input_line and return a register |
5623 | number. Gets md_undefined_symbol above to do the register name | |
5624 | matching for us. | |
0a9ef439 | 5625 | |
ea1562b3 | 5626 | Only called as a part of processing the ECOFF .frame directive. */ |
0a9ef439 | 5627 | |
ea1562b3 NC |
5628 | int |
5629 | tc_get_register (int frame ATTRIBUTE_UNUSED) | |
5630 | { | |
5631 | int framereg = AXP_REG_SP; | |
0a9ef439 | 5632 | |
ea1562b3 NC |
5633 | SKIP_WHITESPACE (); |
5634 | if (*input_line_pointer == '$') | |
0a9ef439 | 5635 | { |
ea1562b3 NC |
5636 | char *s = input_line_pointer; |
5637 | char c = get_symbol_end (); | |
5638 | symbolS *sym = md_undefined_symbol (s); | |
0a9ef439 | 5639 | |
ea1562b3 NC |
5640 | *strchr (s, '\0') = c; |
5641 | if (sym && (framereg = S_GET_VALUE (sym)) <= 31) | |
5642 | goto found; | |
0a9ef439 | 5643 | } |
ea1562b3 | 5644 | as_warn (_("frame reg expected, using $%d."), framereg); |
0a9ef439 | 5645 | |
ea1562b3 NC |
5646 | found: |
5647 | note_gpreg (framereg); | |
5648 | return framereg; | |
5649 | } | |
0a9ef439 | 5650 | |
ea1562b3 NC |
5651 | /* This is called before the symbol table is processed. In order to |
5652 | work with gcc when using mips-tfile, we must keep all local labels. | |
5653 | However, in other cases, we want to discard them. If we were | |
5654 | called with -g, but we didn't see any debugging information, it may | |
5655 | mean that gcc is smuggling debugging information through to | |
5656 | mips-tfile, in which case we must generate all local labels. */ | |
5657 | ||
5658 | #ifdef OBJ_ECOFF | |
5659 | ||
5660 | void | |
5661 | alpha_frob_file_before_adjust (void) | |
5662 | { | |
5663 | if (alpha_debug != 0 | |
5664 | && ! ecoff_debugging_seen) | |
5665 | flag_keep_locals = 1; | |
0a9ef439 RH |
5666 | } |
5667 | ||
ea1562b3 NC |
5668 | #endif /* OBJ_ECOFF */ |
5669 | ||
252b5132 RH |
5670 | /* The Alpha has support for some VAX floating point types, as well as for |
5671 | IEEE floating point. We consider IEEE to be the primary floating point | |
5672 | format, and sneak in the VAX floating point support here. */ | |
252b5132 | 5673 | #include "config/atof-vax.c" |