Commit | Line | Data |
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252b5132 | 1 | /* i386.c -- Assemble code for the Intel 80386 |
f7e42eb4 | 2 | Copyright 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
aef6203b | 3 | 2000, 2001, 2002, 2003, 2004, 2005 |
47926f60 | 4 | Free Software Foundation, Inc. |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
47926f60 KH |
23 | /* Intel 80386 machine specific gas. |
24 | Written by Eliot Dresselhaus (eliot@mgm.mit.edu). | |
3e73aa7c | 25 | x86_64 support by Jan Hubicka (jh@suse.cz) |
0f10071e | 26 | VIA PadLock support by Michal Ludvig (mludvig@suse.cz) |
47926f60 KH |
27 | Bugs & suggestions are completely welcome. This is free software. |
28 | Please help us make it better. */ | |
252b5132 | 29 | |
252b5132 | 30 | #include "as.h" |
3882b010 | 31 | #include "safe-ctype.h" |
252b5132 | 32 | #include "subsegs.h" |
316e2c05 | 33 | #include "dwarf2dbg.h" |
54cfded0 | 34 | #include "dw2gencfi.h" |
252b5132 | 35 | #include "opcode/i386.h" |
d2b2c203 | 36 | #include "elf/x86-64.h" |
252b5132 | 37 | |
252b5132 RH |
38 | #ifndef REGISTER_WARNINGS |
39 | #define REGISTER_WARNINGS 1 | |
40 | #endif | |
41 | ||
c3332e24 | 42 | #ifndef INFER_ADDR_PREFIX |
eecb386c | 43 | #define INFER_ADDR_PREFIX 1 |
c3332e24 AM |
44 | #endif |
45 | ||
252b5132 RH |
46 | #ifndef SCALE1_WHEN_NO_INDEX |
47 | /* Specifying a scale factor besides 1 when there is no index is | |
48 | futile. eg. `mov (%ebx,2),%al' does exactly the same as | |
49 | `mov (%ebx),%al'. To slavishly follow what the programmer | |
50 | specified, set SCALE1_WHEN_NO_INDEX to 0. */ | |
51 | #define SCALE1_WHEN_NO_INDEX 1 | |
52 | #endif | |
53 | ||
29b0f896 AM |
54 | #ifndef DEFAULT_ARCH |
55 | #define DEFAULT_ARCH "i386" | |
246fcdee | 56 | #endif |
252b5132 | 57 | |
edde18a5 AM |
58 | #ifndef INLINE |
59 | #if __GNUC__ >= 2 | |
60 | #define INLINE __inline__ | |
61 | #else | |
62 | #define INLINE | |
63 | #endif | |
64 | #endif | |
65 | ||
29b0f896 AM |
66 | static INLINE unsigned int mode_from_disp_size PARAMS ((unsigned int)); |
67 | static INLINE int fits_in_signed_byte PARAMS ((offsetT)); | |
68 | static INLINE int fits_in_unsigned_byte PARAMS ((offsetT)); | |
69 | static INLINE int fits_in_unsigned_word PARAMS ((offsetT)); | |
70 | static INLINE int fits_in_signed_word PARAMS ((offsetT)); | |
71 | static INLINE int fits_in_unsigned_long PARAMS ((offsetT)); | |
72 | static INLINE int fits_in_signed_long PARAMS ((offsetT)); | |
847f7ad4 AM |
73 | static int smallest_imm_type PARAMS ((offsetT)); |
74 | static offsetT offset_in_range PARAMS ((offsetT, int)); | |
252b5132 | 75 | static int add_prefix PARAMS ((unsigned int)); |
3e73aa7c | 76 | static void set_code_flag PARAMS ((int)); |
47926f60 | 77 | static void set_16bit_gcc_code_flag PARAMS ((int)); |
252b5132 | 78 | static void set_intel_syntax PARAMS ((int)); |
e413e4e9 | 79 | static void set_cpu_arch PARAMS ((int)); |
6482c264 NC |
80 | #ifdef TE_PE |
81 | static void pe_directive_secrel PARAMS ((int)); | |
82 | #endif | |
29b0f896 AM |
83 | static char *output_invalid PARAMS ((int c)); |
84 | static int i386_operand PARAMS ((char *operand_string)); | |
85 | static int i386_intel_operand PARAMS ((char *operand_string, int got_a_float)); | |
86 | static const reg_entry *parse_register PARAMS ((char *reg_string, | |
87 | char **end_op)); | |
88 | static char *parse_insn PARAMS ((char *, char *)); | |
89 | static char *parse_operands PARAMS ((char *, const char *)); | |
90 | static void swap_operands PARAMS ((void)); | |
91 | static void optimize_imm PARAMS ((void)); | |
92 | static void optimize_disp PARAMS ((void)); | |
93 | static int match_template PARAMS ((void)); | |
94 | static int check_string PARAMS ((void)); | |
95 | static int process_suffix PARAMS ((void)); | |
96 | static int check_byte_reg PARAMS ((void)); | |
97 | static int check_long_reg PARAMS ((void)); | |
98 | static int check_qword_reg PARAMS ((void)); | |
99 | static int check_word_reg PARAMS ((void)); | |
100 | static int finalize_imm PARAMS ((void)); | |
101 | static int process_operands PARAMS ((void)); | |
102 | static const seg_entry *build_modrm_byte PARAMS ((void)); | |
103 | static void output_insn PARAMS ((void)); | |
104 | static void output_branch PARAMS ((void)); | |
105 | static void output_jump PARAMS ((void)); | |
106 | static void output_interseg_jump PARAMS ((void)); | |
2bbd9c25 JJ |
107 | static void output_imm PARAMS ((fragS *insn_start_frag, |
108 | offsetT insn_start_off)); | |
109 | static void output_disp PARAMS ((fragS *insn_start_frag, | |
110 | offsetT insn_start_off)); | |
29b0f896 AM |
111 | #ifndef I386COFF |
112 | static void s_bss PARAMS ((int)); | |
252b5132 RH |
113 | #endif |
114 | ||
a847613f | 115 | static const char *default_arch = DEFAULT_ARCH; |
3e73aa7c | 116 | |
252b5132 | 117 | /* 'md_assemble ()' gathers together information and puts it into a |
47926f60 | 118 | i386_insn. */ |
252b5132 | 119 | |
520dc8e8 AM |
120 | union i386_op |
121 | { | |
122 | expressionS *disps; | |
123 | expressionS *imms; | |
124 | const reg_entry *regs; | |
125 | }; | |
126 | ||
252b5132 RH |
127 | struct _i386_insn |
128 | { | |
47926f60 | 129 | /* TM holds the template for the insn were currently assembling. */ |
252b5132 RH |
130 | template tm; |
131 | ||
132 | /* SUFFIX holds the instruction mnemonic suffix if given. | |
133 | (e.g. 'l' for 'movl') */ | |
134 | char suffix; | |
135 | ||
47926f60 | 136 | /* OPERANDS gives the number of given operands. */ |
252b5132 RH |
137 | unsigned int operands; |
138 | ||
139 | /* REG_OPERANDS, DISP_OPERANDS, MEM_OPERANDS, IMM_OPERANDS give the number | |
140 | of given register, displacement, memory operands and immediate | |
47926f60 | 141 | operands. */ |
252b5132 RH |
142 | unsigned int reg_operands, disp_operands, mem_operands, imm_operands; |
143 | ||
144 | /* TYPES [i] is the type (see above #defines) which tells us how to | |
520dc8e8 | 145 | use OP[i] for the corresponding operand. */ |
252b5132 RH |
146 | unsigned int types[MAX_OPERANDS]; |
147 | ||
520dc8e8 AM |
148 | /* Displacement expression, immediate expression, or register for each |
149 | operand. */ | |
150 | union i386_op op[MAX_OPERANDS]; | |
252b5132 | 151 | |
3e73aa7c JH |
152 | /* Flags for operands. */ |
153 | unsigned int flags[MAX_OPERANDS]; | |
154 | #define Operand_PCrel 1 | |
155 | ||
252b5132 | 156 | /* Relocation type for operand */ |
f86103b7 | 157 | enum bfd_reloc_code_real reloc[MAX_OPERANDS]; |
252b5132 | 158 | |
252b5132 RH |
159 | /* BASE_REG, INDEX_REG, and LOG2_SCALE_FACTOR are used to encode |
160 | the base index byte below. */ | |
161 | const reg_entry *base_reg; | |
162 | const reg_entry *index_reg; | |
163 | unsigned int log2_scale_factor; | |
164 | ||
165 | /* SEG gives the seg_entries of this insn. They are zero unless | |
47926f60 | 166 | explicit segment overrides are given. */ |
ce8a8b2f | 167 | const seg_entry *seg[2]; |
252b5132 RH |
168 | |
169 | /* PREFIX holds all the given prefix opcodes (usually null). | |
170 | PREFIXES is the number of prefix opcodes. */ | |
171 | unsigned int prefixes; | |
172 | unsigned char prefix[MAX_PREFIXES]; | |
173 | ||
174 | /* RM and SIB are the modrm byte and the sib byte where the | |
175 | addressing modes of this insn are encoded. */ | |
176 | ||
177 | modrm_byte rm; | |
3e73aa7c | 178 | rex_byte rex; |
252b5132 RH |
179 | sib_byte sib; |
180 | }; | |
181 | ||
182 | typedef struct _i386_insn i386_insn; | |
183 | ||
184 | /* List of chars besides those in app.c:symbol_chars that can start an | |
185 | operand. Used to prevent the scrubber eating vital white-space. */ | |
32137342 | 186 | const char extra_symbol_chars[] = "*%-([" |
252b5132 | 187 | #ifdef LEX_AT |
32137342 NC |
188 | "@" |
189 | #endif | |
190 | #ifdef LEX_QM | |
191 | "?" | |
252b5132 | 192 | #endif |
32137342 | 193 | ; |
252b5132 | 194 | |
29b0f896 AM |
195 | #if (defined (TE_I386AIX) \ |
196 | || ((defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) \ | |
197 | && !defined (TE_LINUX) \ | |
32137342 | 198 | && !defined (TE_NETWARE) \ |
29b0f896 AM |
199 | && !defined (TE_FreeBSD) \ |
200 | && !defined (TE_NetBSD))) | |
252b5132 | 201 | /* This array holds the chars that always start a comment. If the |
ce8a8b2f | 202 | pre-processor is disabled, these aren't very useful. */ |
252b5132 RH |
203 | const char comment_chars[] = "#/"; |
204 | #define PREFIX_SEPARATOR '\\' | |
252b5132 RH |
205 | |
206 | /* This array holds the chars that only start a comment at the beginning of | |
207 | a line. If the line seems to have the form '# 123 filename' | |
ce8a8b2f AM |
208 | .line and .file directives will appear in the pre-processed output. |
209 | Note that input_file.c hand checks for '#' at the beginning of the | |
252b5132 | 210 | first line of the input file. This is because the compiler outputs |
ce8a8b2f AM |
211 | #NO_APP at the beginning of its output. |
212 | Also note that comments started like this one will always work if | |
252b5132 | 213 | '/' isn't otherwise defined. */ |
0d9f6d04 | 214 | const char line_comment_chars[] = "#"; |
29b0f896 | 215 | |
252b5132 | 216 | #else |
29b0f896 AM |
217 | /* Putting '/' here makes it impossible to use the divide operator. |
218 | However, we need it for compatibility with SVR4 systems. */ | |
219 | const char comment_chars[] = "#"; | |
220 | #define PREFIX_SEPARATOR '/' | |
221 | ||
0d9f6d04 | 222 | const char line_comment_chars[] = "/#"; |
252b5132 RH |
223 | #endif |
224 | ||
63a0b638 | 225 | const char line_separator_chars[] = ";"; |
252b5132 | 226 | |
ce8a8b2f AM |
227 | /* Chars that can be used to separate mant from exp in floating point |
228 | nums. */ | |
252b5132 RH |
229 | const char EXP_CHARS[] = "eE"; |
230 | ||
ce8a8b2f AM |
231 | /* Chars that mean this number is a floating point constant |
232 | As in 0f12.456 | |
233 | or 0d1.2345e12. */ | |
252b5132 RH |
234 | const char FLT_CHARS[] = "fFdDxX"; |
235 | ||
ce8a8b2f | 236 | /* Tables for lexical analysis. */ |
252b5132 RH |
237 | static char mnemonic_chars[256]; |
238 | static char register_chars[256]; | |
239 | static char operand_chars[256]; | |
240 | static char identifier_chars[256]; | |
241 | static char digit_chars[256]; | |
242 | ||
ce8a8b2f | 243 | /* Lexical macros. */ |
252b5132 RH |
244 | #define is_mnemonic_char(x) (mnemonic_chars[(unsigned char) x]) |
245 | #define is_operand_char(x) (operand_chars[(unsigned char) x]) | |
246 | #define is_register_char(x) (register_chars[(unsigned char) x]) | |
247 | #define is_space_char(x) ((x) == ' ') | |
248 | #define is_identifier_char(x) (identifier_chars[(unsigned char) x]) | |
249 | #define is_digit_char(x) (digit_chars[(unsigned char) x]) | |
250 | ||
0234cb7c | 251 | /* All non-digit non-letter characters that may occur in an operand. */ |
252b5132 RH |
252 | static char operand_special_chars[] = "%$-+(,)*._~/<>|&^!:[@]"; |
253 | ||
254 | /* md_assemble() always leaves the strings it's passed unaltered. To | |
255 | effect this we maintain a stack of saved characters that we've smashed | |
256 | with '\0's (indicating end of strings for various sub-fields of the | |
47926f60 | 257 | assembler instruction). */ |
252b5132 | 258 | static char save_stack[32]; |
ce8a8b2f | 259 | static char *save_stack_p; |
252b5132 RH |
260 | #define END_STRING_AND_SAVE(s) \ |
261 | do { *save_stack_p++ = *(s); *(s) = '\0'; } while (0) | |
262 | #define RESTORE_END_STRING(s) \ | |
263 | do { *(s) = *--save_stack_p; } while (0) | |
264 | ||
47926f60 | 265 | /* The instruction we're assembling. */ |
252b5132 RH |
266 | static i386_insn i; |
267 | ||
268 | /* Possible templates for current insn. */ | |
269 | static const templates *current_templates; | |
270 | ||
47926f60 | 271 | /* Per instruction expressionS buffers: 2 displacements & 2 immediate max. */ |
252b5132 RH |
272 | static expressionS disp_expressions[2], im_expressions[2]; |
273 | ||
47926f60 KH |
274 | /* Current operand we are working on. */ |
275 | static int this_operand; | |
252b5132 | 276 | |
3e73aa7c JH |
277 | /* We support four different modes. FLAG_CODE variable is used to distinguish |
278 | these. */ | |
279 | ||
280 | enum flag_code { | |
281 | CODE_32BIT, | |
282 | CODE_16BIT, | |
283 | CODE_64BIT }; | |
f3c180ae | 284 | #define NUM_FLAG_CODE ((int) CODE_64BIT + 1) |
3e73aa7c JH |
285 | |
286 | static enum flag_code flag_code; | |
287 | static int use_rela_relocations = 0; | |
288 | ||
289 | /* The names used to print error messages. */ | |
b77a7acd | 290 | static const char *flag_code_names[] = |
3e73aa7c JH |
291 | { |
292 | "32", | |
293 | "16", | |
294 | "64" | |
295 | }; | |
252b5132 | 296 | |
47926f60 KH |
297 | /* 1 for intel syntax, |
298 | 0 if att syntax. */ | |
299 | static int intel_syntax = 0; | |
252b5132 | 300 | |
47926f60 KH |
301 | /* 1 if register prefix % not required. */ |
302 | static int allow_naked_reg = 0; | |
252b5132 | 303 | |
47926f60 KH |
304 | /* Used in 16 bit gcc mode to add an l suffix to call, ret, enter, |
305 | leave, push, and pop instructions so that gcc has the same stack | |
306 | frame as in 32 bit mode. */ | |
307 | static char stackop_size = '\0'; | |
eecb386c | 308 | |
12b55ccc L |
309 | /* Non-zero to optimize code alignment. */ |
310 | int optimize_align_code = 1; | |
311 | ||
47926f60 KH |
312 | /* Non-zero to quieten some warnings. */ |
313 | static int quiet_warnings = 0; | |
a38cf1db | 314 | |
47926f60 KH |
315 | /* CPU name. */ |
316 | static const char *cpu_arch_name = NULL; | |
5c6af06e | 317 | static const char *cpu_sub_arch_name = NULL; |
a38cf1db | 318 | |
47926f60 | 319 | /* CPU feature flags. */ |
29b0f896 | 320 | static unsigned int cpu_arch_flags = CpuUnknownFlags | CpuNo64; |
a38cf1db | 321 | |
fddf5b5b AM |
322 | /* If set, conditional jumps are not automatically promoted to handle |
323 | larger than a byte offset. */ | |
324 | static unsigned int no_cond_jump_promotion = 0; | |
325 | ||
29b0f896 | 326 | /* Pre-defined "_GLOBAL_OFFSET_TABLE_". */ |
87c245cc | 327 | static symbolS *GOT_symbol; |
29b0f896 | 328 | |
a4447b93 RH |
329 | /* The dwarf2 return column, adjusted for 32 or 64 bit. */ |
330 | unsigned int x86_dwarf2_return_column; | |
331 | ||
332 | /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */ | |
333 | int x86_cie_data_alignment; | |
334 | ||
252b5132 | 335 | /* Interface to relax_segment. |
fddf5b5b AM |
336 | There are 3 major relax states for 386 jump insns because the |
337 | different types of jumps add different sizes to frags when we're | |
338 | figuring out what sort of jump to choose to reach a given label. */ | |
252b5132 | 339 | |
47926f60 | 340 | /* Types. */ |
93c2a809 AM |
341 | #define UNCOND_JUMP 0 |
342 | #define COND_JUMP 1 | |
343 | #define COND_JUMP86 2 | |
fddf5b5b | 344 | |
47926f60 | 345 | /* Sizes. */ |
252b5132 RH |
346 | #define CODE16 1 |
347 | #define SMALL 0 | |
29b0f896 | 348 | #define SMALL16 (SMALL | CODE16) |
252b5132 | 349 | #define BIG 2 |
29b0f896 | 350 | #define BIG16 (BIG | CODE16) |
252b5132 RH |
351 | |
352 | #ifndef INLINE | |
353 | #ifdef __GNUC__ | |
354 | #define INLINE __inline__ | |
355 | #else | |
356 | #define INLINE | |
357 | #endif | |
358 | #endif | |
359 | ||
fddf5b5b AM |
360 | #define ENCODE_RELAX_STATE(type, size) \ |
361 | ((relax_substateT) (((type) << 2) | (size))) | |
362 | #define TYPE_FROM_RELAX_STATE(s) \ | |
363 | ((s) >> 2) | |
364 | #define DISP_SIZE_FROM_RELAX_STATE(s) \ | |
365 | ((((s) & 3) == BIG ? 4 : (((s) & 3) == BIG16 ? 2 : 1))) | |
252b5132 RH |
366 | |
367 | /* This table is used by relax_frag to promote short jumps to long | |
368 | ones where necessary. SMALL (short) jumps may be promoted to BIG | |
369 | (32 bit long) ones, and SMALL16 jumps to BIG16 (16 bit long). We | |
370 | don't allow a short jump in a 32 bit code segment to be promoted to | |
371 | a 16 bit offset jump because it's slower (requires data size | |
372 | prefix), and doesn't work, unless the destination is in the bottom | |
373 | 64k of the code segment (The top 16 bits of eip are zeroed). */ | |
374 | ||
375 | const relax_typeS md_relax_table[] = | |
376 | { | |
24eab124 AM |
377 | /* The fields are: |
378 | 1) most positive reach of this state, | |
379 | 2) most negative reach of this state, | |
93c2a809 | 380 | 3) how many bytes this mode will have in the variable part of the frag |
ce8a8b2f | 381 | 4) which index into the table to try if we can't fit into this one. */ |
252b5132 | 382 | |
fddf5b5b | 383 | /* UNCOND_JUMP states. */ |
93c2a809 AM |
384 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (UNCOND_JUMP, BIG)}, |
385 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (UNCOND_JUMP, BIG16)}, | |
386 | /* dword jmp adds 4 bytes to frag: | |
387 | 0 extra opcode bytes, 4 displacement bytes. */ | |
252b5132 | 388 | {0, 0, 4, 0}, |
93c2a809 AM |
389 | /* word jmp adds 2 byte2 to frag: |
390 | 0 extra opcode bytes, 2 displacement bytes. */ | |
252b5132 RH |
391 | {0, 0, 2, 0}, |
392 | ||
93c2a809 AM |
393 | /* COND_JUMP states. */ |
394 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP, BIG)}, | |
395 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP, BIG16)}, | |
396 | /* dword conditionals adds 5 bytes to frag: | |
397 | 1 extra opcode byte, 4 displacement bytes. */ | |
398 | {0, 0, 5, 0}, | |
fddf5b5b | 399 | /* word conditionals add 3 bytes to frag: |
93c2a809 AM |
400 | 1 extra opcode byte, 2 displacement bytes. */ |
401 | {0, 0, 3, 0}, | |
402 | ||
403 | /* COND_JUMP86 states. */ | |
404 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP86, BIG)}, | |
405 | {127 + 1, -128 + 1, 1, ENCODE_RELAX_STATE (COND_JUMP86, BIG16)}, | |
406 | /* dword conditionals adds 5 bytes to frag: | |
407 | 1 extra opcode byte, 4 displacement bytes. */ | |
408 | {0, 0, 5, 0}, | |
409 | /* word conditionals add 4 bytes to frag: | |
410 | 1 displacement byte and a 3 byte long branch insn. */ | |
411 | {0, 0, 4, 0} | |
252b5132 RH |
412 | }; |
413 | ||
e413e4e9 AM |
414 | static const arch_entry cpu_arch[] = { |
415 | {"i8086", Cpu086 }, | |
416 | {"i186", Cpu086|Cpu186 }, | |
417 | {"i286", Cpu086|Cpu186|Cpu286 }, | |
418 | {"i386", Cpu086|Cpu186|Cpu286|Cpu386 }, | |
419 | {"i486", Cpu086|Cpu186|Cpu286|Cpu386|Cpu486 }, | |
5c6af06e JB |
420 | {"i586", Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586 }, |
421 | {"i686", Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686 }, | |
422 | {"pentium", Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586 }, | |
423 | {"pentiumpro",Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686 }, | |
424 | {"pentiumii", Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuMMX }, | |
425 | {"pentiumiii",Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuMMX|CpuMMX2|CpuSSE }, | |
426 | {"pentium4", Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuMMX|CpuMMX2|CpuSSE|CpuSSE2 }, | |
427 | {"prescott", Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuP4|CpuMMX|CpuMMX2|CpuSSE|CpuSSE2|CpuPNI }, | |
428 | {"k6", Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|CpuK6|CpuMMX }, | |
429 | {"k6_2", Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|CpuK6|CpuMMX|Cpu3dnow }, | |
430 | {"athlon", Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuK6|CpuAthlon|CpuMMX|CpuMMX2|Cpu3dnow|Cpu3dnowA }, | |
431 | {"sledgehammer",Cpu086|Cpu186|Cpu286|Cpu386|Cpu486|Cpu586|Cpu686|CpuK6|CpuAthlon|CpuSledgehammer|CpuMMX|CpuMMX2|Cpu3dnow|Cpu3dnowA|CpuSSE|CpuSSE2 }, | |
432 | {".mmx", CpuMMX }, | |
433 | {".sse", CpuMMX|CpuMMX2|CpuSSE }, | |
434 | {".sse2", CpuMMX|CpuMMX2|CpuSSE|CpuSSE2 }, | |
435 | {".3dnow", CpuMMX|Cpu3dnow }, | |
436 | {".3dnowa", CpuMMX|CpuMMX2|Cpu3dnow|Cpu3dnowA }, | |
437 | {".padlock", CpuPadLock }, | |
e413e4e9 AM |
438 | {NULL, 0 } |
439 | }; | |
440 | ||
29b0f896 AM |
441 | const pseudo_typeS md_pseudo_table[] = |
442 | { | |
443 | #if !defined(OBJ_AOUT) && !defined(USE_ALIGN_PTWO) | |
444 | {"align", s_align_bytes, 0}, | |
445 | #else | |
446 | {"align", s_align_ptwo, 0}, | |
447 | #endif | |
448 | {"arch", set_cpu_arch, 0}, | |
449 | #ifndef I386COFF | |
450 | {"bss", s_bss, 0}, | |
451 | #endif | |
452 | {"ffloat", float_cons, 'f'}, | |
453 | {"dfloat", float_cons, 'd'}, | |
454 | {"tfloat", float_cons, 'x'}, | |
455 | {"value", cons, 2}, | |
456 | {"noopt", s_ignore, 0}, | |
457 | {"optim", s_ignore, 0}, | |
458 | {"code16gcc", set_16bit_gcc_code_flag, CODE_16BIT}, | |
459 | {"code16", set_code_flag, CODE_16BIT}, | |
460 | {"code32", set_code_flag, CODE_32BIT}, | |
461 | {"code64", set_code_flag, CODE_64BIT}, | |
462 | {"intel_syntax", set_intel_syntax, 1}, | |
463 | {"att_syntax", set_intel_syntax, 0}, | |
c6682705 | 464 | {"file", (void (*) PARAMS ((int))) dwarf2_directive_file, 0}, |
29b0f896 | 465 | {"loc", dwarf2_directive_loc, 0}, |
6482c264 NC |
466 | #ifdef TE_PE |
467 | {"secrel32", pe_directive_secrel, 0}, | |
468 | #endif | |
29b0f896 AM |
469 | {0, 0, 0} |
470 | }; | |
471 | ||
472 | /* For interface with expression (). */ | |
473 | extern char *input_line_pointer; | |
474 | ||
475 | /* Hash table for instruction mnemonic lookup. */ | |
476 | static struct hash_control *op_hash; | |
477 | ||
478 | /* Hash table for register lookup. */ | |
479 | static struct hash_control *reg_hash; | |
480 | \f | |
252b5132 RH |
481 | void |
482 | i386_align_code (fragP, count) | |
483 | fragS *fragP; | |
484 | int count; | |
485 | { | |
ce8a8b2f AM |
486 | /* Various efficient no-op patterns for aligning code labels. |
487 | Note: Don't try to assemble the instructions in the comments. | |
488 | 0L and 0w are not legal. */ | |
252b5132 RH |
489 | static const char f32_1[] = |
490 | {0x90}; /* nop */ | |
491 | static const char f32_2[] = | |
492 | {0x89,0xf6}; /* movl %esi,%esi */ | |
493 | static const char f32_3[] = | |
494 | {0x8d,0x76,0x00}; /* leal 0(%esi),%esi */ | |
495 | static const char f32_4[] = | |
496 | {0x8d,0x74,0x26,0x00}; /* leal 0(%esi,1),%esi */ | |
497 | static const char f32_5[] = | |
498 | {0x90, /* nop */ | |
499 | 0x8d,0x74,0x26,0x00}; /* leal 0(%esi,1),%esi */ | |
500 | static const char f32_6[] = | |
501 | {0x8d,0xb6,0x00,0x00,0x00,0x00}; /* leal 0L(%esi),%esi */ | |
502 | static const char f32_7[] = | |
503 | {0x8d,0xb4,0x26,0x00,0x00,0x00,0x00}; /* leal 0L(%esi,1),%esi */ | |
504 | static const char f32_8[] = | |
505 | {0x90, /* nop */ | |
506 | 0x8d,0xb4,0x26,0x00,0x00,0x00,0x00}; /* leal 0L(%esi,1),%esi */ | |
507 | static const char f32_9[] = | |
508 | {0x89,0xf6, /* movl %esi,%esi */ | |
509 | 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */ | |
510 | static const char f32_10[] = | |
511 | {0x8d,0x76,0x00, /* leal 0(%esi),%esi */ | |
512 | 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */ | |
513 | static const char f32_11[] = | |
514 | {0x8d,0x74,0x26,0x00, /* leal 0(%esi,1),%esi */ | |
515 | 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */ | |
516 | static const char f32_12[] = | |
517 | {0x8d,0xb6,0x00,0x00,0x00,0x00, /* leal 0L(%esi),%esi */ | |
518 | 0x8d,0xbf,0x00,0x00,0x00,0x00}; /* leal 0L(%edi),%edi */ | |
519 | static const char f32_13[] = | |
520 | {0x8d,0xb6,0x00,0x00,0x00,0x00, /* leal 0L(%esi),%esi */ | |
521 | 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */ | |
522 | static const char f32_14[] = | |
523 | {0x8d,0xb4,0x26,0x00,0x00,0x00,0x00, /* leal 0L(%esi,1),%esi */ | |
524 | 0x8d,0xbc,0x27,0x00,0x00,0x00,0x00}; /* leal 0L(%edi,1),%edi */ | |
525 | static const char f32_15[] = | |
526 | {0xeb,0x0d,0x90,0x90,0x90,0x90,0x90, /* jmp .+15; lotsa nops */ | |
527 | 0x90,0x90,0x90,0x90,0x90,0x90,0x90,0x90}; | |
c3332e24 AM |
528 | static const char f16_3[] = |
529 | {0x8d,0x74,0x00}; /* lea 0(%esi),%esi */ | |
252b5132 RH |
530 | static const char f16_4[] = |
531 | {0x8d,0xb4,0x00,0x00}; /* lea 0w(%si),%si */ | |
532 | static const char f16_5[] = | |
533 | {0x90, /* nop */ | |
534 | 0x8d,0xb4,0x00,0x00}; /* lea 0w(%si),%si */ | |
535 | static const char f16_6[] = | |
536 | {0x89,0xf6, /* mov %si,%si */ | |
537 | 0x8d,0xbd,0x00,0x00}; /* lea 0w(%di),%di */ | |
538 | static const char f16_7[] = | |
539 | {0x8d,0x74,0x00, /* lea 0(%si),%si */ | |
540 | 0x8d,0xbd,0x00,0x00}; /* lea 0w(%di),%di */ | |
541 | static const char f16_8[] = | |
542 | {0x8d,0xb4,0x00,0x00, /* lea 0w(%si),%si */ | |
543 | 0x8d,0xbd,0x00,0x00}; /* lea 0w(%di),%di */ | |
544 | static const char *const f32_patt[] = { | |
545 | f32_1, f32_2, f32_3, f32_4, f32_5, f32_6, f32_7, f32_8, | |
546 | f32_9, f32_10, f32_11, f32_12, f32_13, f32_14, f32_15 | |
547 | }; | |
548 | static const char *const f16_patt[] = { | |
c3332e24 | 549 | f32_1, f32_2, f16_3, f16_4, f16_5, f16_6, f16_7, f16_8, |
252b5132 RH |
550 | f32_15, f32_15, f32_15, f32_15, f32_15, f32_15, f32_15 |
551 | }; | |
552 | ||
33fef721 JH |
553 | if (count <= 0 || count > 15) |
554 | return; | |
3e73aa7c | 555 | |
33fef721 JH |
556 | /* The recommended way to pad 64bit code is to use NOPs preceded by |
557 | maximally four 0x66 prefixes. Balance the size of nops. */ | |
558 | if (flag_code == CODE_64BIT) | |
252b5132 | 559 | { |
33fef721 JH |
560 | int i; |
561 | int nnops = (count + 3) / 4; | |
562 | int len = count / nnops; | |
563 | int remains = count - nnops * len; | |
564 | int pos = 0; | |
565 | ||
566 | for (i = 0; i < remains; i++) | |
252b5132 | 567 | { |
33fef721 JH |
568 | memset (fragP->fr_literal + fragP->fr_fix + pos, 0x66, len); |
569 | fragP->fr_literal[fragP->fr_fix + pos + len] = 0x90; | |
570 | pos += len + 1; | |
571 | } | |
572 | for (; i < nnops; i++) | |
573 | { | |
574 | memset (fragP->fr_literal + fragP->fr_fix + pos, 0x66, len - 1); | |
575 | fragP->fr_literal[fragP->fr_fix + pos + len - 1] = 0x90; | |
576 | pos += len; | |
252b5132 | 577 | } |
252b5132 | 578 | } |
33fef721 JH |
579 | else |
580 | if (flag_code == CODE_16BIT) | |
581 | { | |
582 | memcpy (fragP->fr_literal + fragP->fr_fix, | |
583 | f16_patt[count - 1], count); | |
584 | if (count > 8) | |
585 | /* Adjust jump offset. */ | |
586 | fragP->fr_literal[fragP->fr_fix + 1] = count - 2; | |
587 | } | |
588 | else | |
589 | memcpy (fragP->fr_literal + fragP->fr_fix, | |
590 | f32_patt[count - 1], count); | |
591 | fragP->fr_var = count; | |
252b5132 RH |
592 | } |
593 | ||
252b5132 RH |
594 | static INLINE unsigned int |
595 | mode_from_disp_size (t) | |
596 | unsigned int t; | |
597 | { | |
3e73aa7c | 598 | return (t & Disp8) ? 1 : (t & (Disp16 | Disp32 | Disp32S)) ? 2 : 0; |
252b5132 RH |
599 | } |
600 | ||
601 | static INLINE int | |
602 | fits_in_signed_byte (num) | |
847f7ad4 | 603 | offsetT num; |
252b5132 RH |
604 | { |
605 | return (num >= -128) && (num <= 127); | |
47926f60 | 606 | } |
252b5132 RH |
607 | |
608 | static INLINE int | |
609 | fits_in_unsigned_byte (num) | |
847f7ad4 | 610 | offsetT num; |
252b5132 RH |
611 | { |
612 | return (num & 0xff) == num; | |
47926f60 | 613 | } |
252b5132 RH |
614 | |
615 | static INLINE int | |
616 | fits_in_unsigned_word (num) | |
847f7ad4 | 617 | offsetT num; |
252b5132 RH |
618 | { |
619 | return (num & 0xffff) == num; | |
47926f60 | 620 | } |
252b5132 RH |
621 | |
622 | static INLINE int | |
623 | fits_in_signed_word (num) | |
847f7ad4 | 624 | offsetT num; |
252b5132 RH |
625 | { |
626 | return (-32768 <= num) && (num <= 32767); | |
47926f60 | 627 | } |
3e73aa7c JH |
628 | static INLINE int |
629 | fits_in_signed_long (num) | |
630 | offsetT num ATTRIBUTE_UNUSED; | |
631 | { | |
632 | #ifndef BFD64 | |
633 | return 1; | |
634 | #else | |
635 | return (!(((offsetT) -1 << 31) & num) | |
636 | || (((offsetT) -1 << 31) & num) == ((offsetT) -1 << 31)); | |
637 | #endif | |
638 | } /* fits_in_signed_long() */ | |
639 | static INLINE int | |
640 | fits_in_unsigned_long (num) | |
641 | offsetT num ATTRIBUTE_UNUSED; | |
642 | { | |
643 | #ifndef BFD64 | |
644 | return 1; | |
645 | #else | |
646 | return (num & (((offsetT) 2 << 31) - 1)) == num; | |
647 | #endif | |
648 | } /* fits_in_unsigned_long() */ | |
252b5132 RH |
649 | |
650 | static int | |
651 | smallest_imm_type (num) | |
847f7ad4 | 652 | offsetT num; |
252b5132 | 653 | { |
a847613f | 654 | if (cpu_arch_flags != (Cpu086 | Cpu186 | Cpu286 | Cpu386 | Cpu486 | CpuNo64)) |
e413e4e9 AM |
655 | { |
656 | /* This code is disabled on the 486 because all the Imm1 forms | |
657 | in the opcode table are slower on the i486. They're the | |
658 | versions with the implicitly specified single-position | |
659 | displacement, which has another syntax if you really want to | |
660 | use that form. */ | |
661 | if (num == 1) | |
3e73aa7c | 662 | return Imm1 | Imm8 | Imm8S | Imm16 | Imm32 | Imm32S | Imm64; |
e413e4e9 | 663 | } |
252b5132 | 664 | return (fits_in_signed_byte (num) |
3e73aa7c | 665 | ? (Imm8S | Imm8 | Imm16 | Imm32 | Imm32S | Imm64) |
252b5132 | 666 | : fits_in_unsigned_byte (num) |
3e73aa7c | 667 | ? (Imm8 | Imm16 | Imm32 | Imm32S | Imm64) |
252b5132 | 668 | : (fits_in_signed_word (num) || fits_in_unsigned_word (num)) |
3e73aa7c JH |
669 | ? (Imm16 | Imm32 | Imm32S | Imm64) |
670 | : fits_in_signed_long (num) | |
671 | ? (Imm32 | Imm32S | Imm64) | |
672 | : fits_in_unsigned_long (num) | |
673 | ? (Imm32 | Imm64) | |
674 | : Imm64); | |
47926f60 | 675 | } |
252b5132 | 676 | |
847f7ad4 AM |
677 | static offsetT |
678 | offset_in_range (val, size) | |
679 | offsetT val; | |
680 | int size; | |
681 | { | |
508866be | 682 | addressT mask; |
ba2adb93 | 683 | |
847f7ad4 AM |
684 | switch (size) |
685 | { | |
508866be L |
686 | case 1: mask = ((addressT) 1 << 8) - 1; break; |
687 | case 2: mask = ((addressT) 1 << 16) - 1; break; | |
3b0ec529 | 688 | case 4: mask = ((addressT) 2 << 31) - 1; break; |
3e73aa7c JH |
689 | #ifdef BFD64 |
690 | case 8: mask = ((addressT) 2 << 63) - 1; break; | |
691 | #endif | |
47926f60 | 692 | default: abort (); |
847f7ad4 AM |
693 | } |
694 | ||
ba2adb93 | 695 | /* If BFD64, sign extend val. */ |
3e73aa7c JH |
696 | if (!use_rela_relocations) |
697 | if ((val & ~(((addressT) 2 << 31) - 1)) == 0) | |
698 | val = (val ^ ((addressT) 1 << 31)) - ((addressT) 1 << 31); | |
ba2adb93 | 699 | |
47926f60 | 700 | if ((val & ~mask) != 0 && (val & ~mask) != ~mask) |
847f7ad4 AM |
701 | { |
702 | char buf1[40], buf2[40]; | |
703 | ||
704 | sprint_value (buf1, val); | |
705 | sprint_value (buf2, val & mask); | |
706 | as_warn (_("%s shortened to %s"), buf1, buf2); | |
707 | } | |
708 | return val & mask; | |
709 | } | |
710 | ||
252b5132 RH |
711 | /* Returns 0 if attempting to add a prefix where one from the same |
712 | class already exists, 1 if non rep/repne added, 2 if rep/repne | |
713 | added. */ | |
714 | static int | |
715 | add_prefix (prefix) | |
716 | unsigned int prefix; | |
717 | { | |
718 | int ret = 1; | |
719 | int q; | |
720 | ||
29b0f896 AM |
721 | if (prefix >= REX_OPCODE && prefix < REX_OPCODE + 16 |
722 | && flag_code == CODE_64BIT) | |
3e73aa7c JH |
723 | q = REX_PREFIX; |
724 | else | |
725 | switch (prefix) | |
726 | { | |
727 | default: | |
728 | abort (); | |
729 | ||
730 | case CS_PREFIX_OPCODE: | |
731 | case DS_PREFIX_OPCODE: | |
732 | case ES_PREFIX_OPCODE: | |
733 | case FS_PREFIX_OPCODE: | |
734 | case GS_PREFIX_OPCODE: | |
735 | case SS_PREFIX_OPCODE: | |
736 | q = SEG_PREFIX; | |
737 | break; | |
252b5132 | 738 | |
3e73aa7c JH |
739 | case REPNE_PREFIX_OPCODE: |
740 | case REPE_PREFIX_OPCODE: | |
741 | ret = 2; | |
742 | /* fall thru */ | |
743 | case LOCK_PREFIX_OPCODE: | |
744 | q = LOCKREP_PREFIX; | |
745 | break; | |
252b5132 | 746 | |
3e73aa7c JH |
747 | case FWAIT_OPCODE: |
748 | q = WAIT_PREFIX; | |
749 | break; | |
252b5132 | 750 | |
3e73aa7c JH |
751 | case ADDR_PREFIX_OPCODE: |
752 | q = ADDR_PREFIX; | |
753 | break; | |
252b5132 | 754 | |
3e73aa7c JH |
755 | case DATA_PREFIX_OPCODE: |
756 | q = DATA_PREFIX; | |
757 | break; | |
758 | } | |
252b5132 | 759 | |
29b0f896 | 760 | if (i.prefix[q] != 0) |
252b5132 RH |
761 | { |
762 | as_bad (_("same type of prefix used twice")); | |
763 | return 0; | |
764 | } | |
765 | ||
766 | i.prefixes += 1; | |
767 | i.prefix[q] = prefix; | |
768 | return ret; | |
769 | } | |
770 | ||
771 | static void | |
3e73aa7c | 772 | set_code_flag (value) |
e5cb08ac | 773 | int value; |
eecb386c | 774 | { |
3e73aa7c JH |
775 | flag_code = value; |
776 | cpu_arch_flags &= ~(Cpu64 | CpuNo64); | |
777 | cpu_arch_flags |= (flag_code == CODE_64BIT ? Cpu64 : CpuNo64); | |
778 | if (value == CODE_64BIT && !(cpu_arch_flags & CpuSledgehammer)) | |
779 | { | |
780 | as_bad (_("64bit mode not supported on this CPU.")); | |
781 | } | |
782 | if (value == CODE_32BIT && !(cpu_arch_flags & Cpu386)) | |
783 | { | |
784 | as_bad (_("32bit mode not supported on this CPU.")); | |
785 | } | |
eecb386c AM |
786 | stackop_size = '\0'; |
787 | } | |
788 | ||
789 | static void | |
3e73aa7c JH |
790 | set_16bit_gcc_code_flag (new_code_flag) |
791 | int new_code_flag; | |
252b5132 | 792 | { |
3e73aa7c JH |
793 | flag_code = new_code_flag; |
794 | cpu_arch_flags &= ~(Cpu64 | CpuNo64); | |
795 | cpu_arch_flags |= (flag_code == CODE_64BIT ? Cpu64 : CpuNo64); | |
9306ca4a | 796 | stackop_size = LONG_MNEM_SUFFIX; |
252b5132 RH |
797 | } |
798 | ||
799 | static void | |
800 | set_intel_syntax (syntax_flag) | |
eecb386c | 801 | int syntax_flag; |
252b5132 RH |
802 | { |
803 | /* Find out if register prefixing is specified. */ | |
804 | int ask_naked_reg = 0; | |
805 | ||
806 | SKIP_WHITESPACE (); | |
29b0f896 | 807 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
808 | { |
809 | char *string = input_line_pointer; | |
810 | int e = get_symbol_end (); | |
811 | ||
47926f60 | 812 | if (strcmp (string, "prefix") == 0) |
252b5132 | 813 | ask_naked_reg = 1; |
47926f60 | 814 | else if (strcmp (string, "noprefix") == 0) |
252b5132 RH |
815 | ask_naked_reg = -1; |
816 | else | |
d0b47220 | 817 | as_bad (_("bad argument to syntax directive.")); |
252b5132 RH |
818 | *input_line_pointer = e; |
819 | } | |
820 | demand_empty_rest_of_line (); | |
c3332e24 | 821 | |
252b5132 RH |
822 | intel_syntax = syntax_flag; |
823 | ||
824 | if (ask_naked_reg == 0) | |
f86103b7 AM |
825 | allow_naked_reg = (intel_syntax |
826 | && (bfd_get_symbol_leading_char (stdoutput) != '\0')); | |
252b5132 RH |
827 | else |
828 | allow_naked_reg = (ask_naked_reg < 0); | |
9306ca4a JB |
829 | |
830 | identifier_chars['%'] = intel_syntax && allow_naked_reg ? '%' : 0; | |
831 | identifier_chars['$'] = intel_syntax ? '$' : 0; | |
252b5132 RH |
832 | } |
833 | ||
e413e4e9 AM |
834 | static void |
835 | set_cpu_arch (dummy) | |
47926f60 | 836 | int dummy ATTRIBUTE_UNUSED; |
e413e4e9 | 837 | { |
47926f60 | 838 | SKIP_WHITESPACE (); |
e413e4e9 | 839 | |
29b0f896 | 840 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
e413e4e9 AM |
841 | { |
842 | char *string = input_line_pointer; | |
843 | int e = get_symbol_end (); | |
844 | int i; | |
845 | ||
846 | for (i = 0; cpu_arch[i].name; i++) | |
847 | { | |
848 | if (strcmp (string, cpu_arch[i].name) == 0) | |
849 | { | |
5c6af06e JB |
850 | if (*string != '.') |
851 | { | |
852 | cpu_arch_name = cpu_arch[i].name; | |
853 | cpu_sub_arch_name = NULL; | |
854 | cpu_arch_flags = (cpu_arch[i].flags | |
855 | | (flag_code == CODE_64BIT ? Cpu64 : CpuNo64)); | |
856 | break; | |
857 | } | |
858 | if ((cpu_arch_flags | cpu_arch[i].flags) != cpu_arch_flags) | |
859 | { | |
860 | cpu_sub_arch_name = cpu_arch[i].name; | |
861 | cpu_arch_flags |= cpu_arch[i].flags; | |
862 | } | |
863 | *input_line_pointer = e; | |
864 | demand_empty_rest_of_line (); | |
865 | return; | |
e413e4e9 AM |
866 | } |
867 | } | |
868 | if (!cpu_arch[i].name) | |
869 | as_bad (_("no such architecture: `%s'"), string); | |
870 | ||
871 | *input_line_pointer = e; | |
872 | } | |
873 | else | |
874 | as_bad (_("missing cpu architecture")); | |
875 | ||
fddf5b5b AM |
876 | no_cond_jump_promotion = 0; |
877 | if (*input_line_pointer == ',' | |
29b0f896 | 878 | && !is_end_of_line[(unsigned char) input_line_pointer[1]]) |
fddf5b5b AM |
879 | { |
880 | char *string = ++input_line_pointer; | |
881 | int e = get_symbol_end (); | |
882 | ||
883 | if (strcmp (string, "nojumps") == 0) | |
884 | no_cond_jump_promotion = 1; | |
885 | else if (strcmp (string, "jumps") == 0) | |
886 | ; | |
887 | else | |
888 | as_bad (_("no such architecture modifier: `%s'"), string); | |
889 | ||
890 | *input_line_pointer = e; | |
891 | } | |
892 | ||
e413e4e9 AM |
893 | demand_empty_rest_of_line (); |
894 | } | |
895 | ||
b9d79e03 JH |
896 | unsigned long |
897 | i386_mach () | |
898 | { | |
899 | if (!strcmp (default_arch, "x86_64")) | |
900 | return bfd_mach_x86_64; | |
901 | else if (!strcmp (default_arch, "i386")) | |
902 | return bfd_mach_i386_i386; | |
903 | else | |
904 | as_fatal (_("Unknown architecture")); | |
905 | } | |
b9d79e03 | 906 | \f |
252b5132 RH |
907 | void |
908 | md_begin () | |
909 | { | |
910 | const char *hash_err; | |
911 | ||
47926f60 | 912 | /* Initialize op_hash hash table. */ |
252b5132 RH |
913 | op_hash = hash_new (); |
914 | ||
915 | { | |
29b0f896 AM |
916 | const template *optab; |
917 | templates *core_optab; | |
252b5132 | 918 | |
47926f60 KH |
919 | /* Setup for loop. */ |
920 | optab = i386_optab; | |
252b5132 RH |
921 | core_optab = (templates *) xmalloc (sizeof (templates)); |
922 | core_optab->start = optab; | |
923 | ||
924 | while (1) | |
925 | { | |
926 | ++optab; | |
927 | if (optab->name == NULL | |
928 | || strcmp (optab->name, (optab - 1)->name) != 0) | |
929 | { | |
930 | /* different name --> ship out current template list; | |
47926f60 | 931 | add to hash table; & begin anew. */ |
252b5132 RH |
932 | core_optab->end = optab; |
933 | hash_err = hash_insert (op_hash, | |
934 | (optab - 1)->name, | |
935 | (PTR) core_optab); | |
936 | if (hash_err) | |
937 | { | |
252b5132 RH |
938 | as_fatal (_("Internal Error: Can't hash %s: %s"), |
939 | (optab - 1)->name, | |
940 | hash_err); | |
941 | } | |
942 | if (optab->name == NULL) | |
943 | break; | |
944 | core_optab = (templates *) xmalloc (sizeof (templates)); | |
945 | core_optab->start = optab; | |
946 | } | |
947 | } | |
948 | } | |
949 | ||
47926f60 | 950 | /* Initialize reg_hash hash table. */ |
252b5132 RH |
951 | reg_hash = hash_new (); |
952 | { | |
29b0f896 | 953 | const reg_entry *regtab; |
252b5132 RH |
954 | |
955 | for (regtab = i386_regtab; | |
956 | regtab < i386_regtab + sizeof (i386_regtab) / sizeof (i386_regtab[0]); | |
957 | regtab++) | |
958 | { | |
959 | hash_err = hash_insert (reg_hash, regtab->reg_name, (PTR) regtab); | |
960 | if (hash_err) | |
3e73aa7c JH |
961 | as_fatal (_("Internal Error: Can't hash %s: %s"), |
962 | regtab->reg_name, | |
963 | hash_err); | |
252b5132 RH |
964 | } |
965 | } | |
966 | ||
47926f60 | 967 | /* Fill in lexical tables: mnemonic_chars, operand_chars. */ |
252b5132 | 968 | { |
29b0f896 AM |
969 | int c; |
970 | char *p; | |
252b5132 RH |
971 | |
972 | for (c = 0; c < 256; c++) | |
973 | { | |
3882b010 | 974 | if (ISDIGIT (c)) |
252b5132 RH |
975 | { |
976 | digit_chars[c] = c; | |
977 | mnemonic_chars[c] = c; | |
978 | register_chars[c] = c; | |
979 | operand_chars[c] = c; | |
980 | } | |
3882b010 | 981 | else if (ISLOWER (c)) |
252b5132 RH |
982 | { |
983 | mnemonic_chars[c] = c; | |
984 | register_chars[c] = c; | |
985 | operand_chars[c] = c; | |
986 | } | |
3882b010 | 987 | else if (ISUPPER (c)) |
252b5132 | 988 | { |
3882b010 | 989 | mnemonic_chars[c] = TOLOWER (c); |
252b5132 RH |
990 | register_chars[c] = mnemonic_chars[c]; |
991 | operand_chars[c] = c; | |
992 | } | |
993 | ||
3882b010 | 994 | if (ISALPHA (c) || ISDIGIT (c)) |
252b5132 RH |
995 | identifier_chars[c] = c; |
996 | else if (c >= 128) | |
997 | { | |
998 | identifier_chars[c] = c; | |
999 | operand_chars[c] = c; | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | #ifdef LEX_AT | |
1004 | identifier_chars['@'] = '@'; | |
32137342 NC |
1005 | #endif |
1006 | #ifdef LEX_QM | |
1007 | identifier_chars['?'] = '?'; | |
1008 | operand_chars['?'] = '?'; | |
252b5132 | 1009 | #endif |
252b5132 | 1010 | digit_chars['-'] = '-'; |
791fe849 | 1011 | mnemonic_chars['-'] = '-'; |
252b5132 RH |
1012 | identifier_chars['_'] = '_'; |
1013 | identifier_chars['.'] = '.'; | |
1014 | ||
1015 | for (p = operand_special_chars; *p != '\0'; p++) | |
1016 | operand_chars[(unsigned char) *p] = *p; | |
1017 | } | |
1018 | ||
1019 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
1020 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
1021 | { | |
1022 | record_alignment (text_section, 2); | |
1023 | record_alignment (data_section, 2); | |
1024 | record_alignment (bss_section, 2); | |
1025 | } | |
1026 | #endif | |
a4447b93 RH |
1027 | |
1028 | if (flag_code == CODE_64BIT) | |
1029 | { | |
1030 | x86_dwarf2_return_column = 16; | |
1031 | x86_cie_data_alignment = -8; | |
1032 | } | |
1033 | else | |
1034 | { | |
1035 | x86_dwarf2_return_column = 8; | |
1036 | x86_cie_data_alignment = -4; | |
1037 | } | |
252b5132 RH |
1038 | } |
1039 | ||
1040 | void | |
1041 | i386_print_statistics (file) | |
1042 | FILE *file; | |
1043 | { | |
1044 | hash_print_statistics (file, "i386 opcode", op_hash); | |
1045 | hash_print_statistics (file, "i386 register", reg_hash); | |
1046 | } | |
1047 | \f | |
252b5132 RH |
1048 | #ifdef DEBUG386 |
1049 | ||
ce8a8b2f | 1050 | /* Debugging routines for md_assemble. */ |
252b5132 RH |
1051 | static void pi PARAMS ((char *, i386_insn *)); |
1052 | static void pte PARAMS ((template *)); | |
1053 | static void pt PARAMS ((unsigned int)); | |
1054 | static void pe PARAMS ((expressionS *)); | |
1055 | static void ps PARAMS ((symbolS *)); | |
1056 | ||
1057 | static void | |
1058 | pi (line, x) | |
1059 | char *line; | |
1060 | i386_insn *x; | |
1061 | { | |
09f131f2 | 1062 | unsigned int i; |
252b5132 RH |
1063 | |
1064 | fprintf (stdout, "%s: template ", line); | |
1065 | pte (&x->tm); | |
09f131f2 JH |
1066 | fprintf (stdout, " address: base %s index %s scale %x\n", |
1067 | x->base_reg ? x->base_reg->reg_name : "none", | |
1068 | x->index_reg ? x->index_reg->reg_name : "none", | |
1069 | x->log2_scale_factor); | |
1070 | fprintf (stdout, " modrm: mode %x reg %x reg/mem %x\n", | |
252b5132 | 1071 | x->rm.mode, x->rm.reg, x->rm.regmem); |
09f131f2 JH |
1072 | fprintf (stdout, " sib: base %x index %x scale %x\n", |
1073 | x->sib.base, x->sib.index, x->sib.scale); | |
1074 | fprintf (stdout, " rex: 64bit %x extX %x extY %x extZ %x\n", | |
29b0f896 AM |
1075 | (x->rex & REX_MODE64) != 0, |
1076 | (x->rex & REX_EXTX) != 0, | |
1077 | (x->rex & REX_EXTY) != 0, | |
1078 | (x->rex & REX_EXTZ) != 0); | |
252b5132 RH |
1079 | for (i = 0; i < x->operands; i++) |
1080 | { | |
1081 | fprintf (stdout, " #%d: ", i + 1); | |
1082 | pt (x->types[i]); | |
1083 | fprintf (stdout, "\n"); | |
1084 | if (x->types[i] | |
3f4438ab | 1085 | & (Reg | SReg2 | SReg3 | Control | Debug | Test | RegMMX | RegXMM)) |
520dc8e8 | 1086 | fprintf (stdout, "%s\n", x->op[i].regs->reg_name); |
252b5132 | 1087 | if (x->types[i] & Imm) |
520dc8e8 | 1088 | pe (x->op[i].imms); |
252b5132 | 1089 | if (x->types[i] & Disp) |
520dc8e8 | 1090 | pe (x->op[i].disps); |
252b5132 RH |
1091 | } |
1092 | } | |
1093 | ||
1094 | static void | |
1095 | pte (t) | |
1096 | template *t; | |
1097 | { | |
09f131f2 | 1098 | unsigned int i; |
252b5132 | 1099 | fprintf (stdout, " %d operands ", t->operands); |
47926f60 | 1100 | fprintf (stdout, "opcode %x ", t->base_opcode); |
252b5132 RH |
1101 | if (t->extension_opcode != None) |
1102 | fprintf (stdout, "ext %x ", t->extension_opcode); | |
1103 | if (t->opcode_modifier & D) | |
1104 | fprintf (stdout, "D"); | |
1105 | if (t->opcode_modifier & W) | |
1106 | fprintf (stdout, "W"); | |
1107 | fprintf (stdout, "\n"); | |
1108 | for (i = 0; i < t->operands; i++) | |
1109 | { | |
1110 | fprintf (stdout, " #%d type ", i + 1); | |
1111 | pt (t->operand_types[i]); | |
1112 | fprintf (stdout, "\n"); | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | static void | |
1117 | pe (e) | |
1118 | expressionS *e; | |
1119 | { | |
24eab124 | 1120 | fprintf (stdout, " operation %d\n", e->X_op); |
b77ad1d4 AM |
1121 | fprintf (stdout, " add_number %ld (%lx)\n", |
1122 | (long) e->X_add_number, (long) e->X_add_number); | |
252b5132 RH |
1123 | if (e->X_add_symbol) |
1124 | { | |
1125 | fprintf (stdout, " add_symbol "); | |
1126 | ps (e->X_add_symbol); | |
1127 | fprintf (stdout, "\n"); | |
1128 | } | |
1129 | if (e->X_op_symbol) | |
1130 | { | |
1131 | fprintf (stdout, " op_symbol "); | |
1132 | ps (e->X_op_symbol); | |
1133 | fprintf (stdout, "\n"); | |
1134 | } | |
1135 | } | |
1136 | ||
1137 | static void | |
1138 | ps (s) | |
1139 | symbolS *s; | |
1140 | { | |
1141 | fprintf (stdout, "%s type %s%s", | |
1142 | S_GET_NAME (s), | |
1143 | S_IS_EXTERNAL (s) ? "EXTERNAL " : "", | |
1144 | segment_name (S_GET_SEGMENT (s))); | |
1145 | } | |
1146 | ||
1147 | struct type_name | |
1148 | { | |
1149 | unsigned int mask; | |
1150 | char *tname; | |
1151 | } | |
1152 | ||
29b0f896 | 1153 | static const type_names[] = |
252b5132 RH |
1154 | { |
1155 | { Reg8, "r8" }, | |
1156 | { Reg16, "r16" }, | |
1157 | { Reg32, "r32" }, | |
09f131f2 | 1158 | { Reg64, "r64" }, |
252b5132 RH |
1159 | { Imm8, "i8" }, |
1160 | { Imm8S, "i8s" }, | |
1161 | { Imm16, "i16" }, | |
1162 | { Imm32, "i32" }, | |
09f131f2 JH |
1163 | { Imm32S, "i32s" }, |
1164 | { Imm64, "i64" }, | |
252b5132 RH |
1165 | { Imm1, "i1" }, |
1166 | { BaseIndex, "BaseIndex" }, | |
1167 | { Disp8, "d8" }, | |
1168 | { Disp16, "d16" }, | |
1169 | { Disp32, "d32" }, | |
09f131f2 JH |
1170 | { Disp32S, "d32s" }, |
1171 | { Disp64, "d64" }, | |
252b5132 RH |
1172 | { InOutPortReg, "InOutPortReg" }, |
1173 | { ShiftCount, "ShiftCount" }, | |
1174 | { Control, "control reg" }, | |
1175 | { Test, "test reg" }, | |
1176 | { Debug, "debug reg" }, | |
1177 | { FloatReg, "FReg" }, | |
1178 | { FloatAcc, "FAcc" }, | |
1179 | { SReg2, "SReg2" }, | |
1180 | { SReg3, "SReg3" }, | |
1181 | { Acc, "Acc" }, | |
1182 | { JumpAbsolute, "Jump Absolute" }, | |
1183 | { RegMMX, "rMMX" }, | |
3f4438ab | 1184 | { RegXMM, "rXMM" }, |
252b5132 RH |
1185 | { EsSeg, "es" }, |
1186 | { 0, "" } | |
1187 | }; | |
1188 | ||
1189 | static void | |
1190 | pt (t) | |
1191 | unsigned int t; | |
1192 | { | |
29b0f896 | 1193 | const struct type_name *ty; |
252b5132 | 1194 | |
09f131f2 JH |
1195 | for (ty = type_names; ty->mask; ty++) |
1196 | if (t & ty->mask) | |
1197 | fprintf (stdout, "%s, ", ty->tname); | |
252b5132 RH |
1198 | fflush (stdout); |
1199 | } | |
1200 | ||
1201 | #endif /* DEBUG386 */ | |
1202 | \f | |
29b0f896 AM |
1203 | static bfd_reloc_code_real_type reloc |
1204 | PARAMS ((int, int, int, bfd_reloc_code_real_type)); | |
252b5132 RH |
1205 | |
1206 | static bfd_reloc_code_real_type | |
3e73aa7c | 1207 | reloc (size, pcrel, sign, other) |
252b5132 RH |
1208 | int size; |
1209 | int pcrel; | |
3e73aa7c | 1210 | int sign; |
252b5132 RH |
1211 | bfd_reloc_code_real_type other; |
1212 | { | |
47926f60 KH |
1213 | if (other != NO_RELOC) |
1214 | return other; | |
252b5132 RH |
1215 | |
1216 | if (pcrel) | |
1217 | { | |
3e73aa7c | 1218 | if (!sign) |
e5cb08ac | 1219 | as_bad (_("There are no unsigned pc-relative relocations")); |
252b5132 RH |
1220 | switch (size) |
1221 | { | |
1222 | case 1: return BFD_RELOC_8_PCREL; | |
1223 | case 2: return BFD_RELOC_16_PCREL; | |
1224 | case 4: return BFD_RELOC_32_PCREL; | |
1225 | } | |
d0b47220 | 1226 | as_bad (_("can not do %d byte pc-relative relocation"), size); |
252b5132 RH |
1227 | } |
1228 | else | |
1229 | { | |
3e73aa7c | 1230 | if (sign) |
e5cb08ac | 1231 | switch (size) |
3e73aa7c JH |
1232 | { |
1233 | case 4: return BFD_RELOC_X86_64_32S; | |
1234 | } | |
1235 | else | |
1236 | switch (size) | |
1237 | { | |
1238 | case 1: return BFD_RELOC_8; | |
1239 | case 2: return BFD_RELOC_16; | |
1240 | case 4: return BFD_RELOC_32; | |
1241 | case 8: return BFD_RELOC_64; | |
1242 | } | |
1243 | as_bad (_("can not do %s %d byte relocation"), | |
1244 | sign ? "signed" : "unsigned", size); | |
252b5132 RH |
1245 | } |
1246 | ||
bfb32b52 | 1247 | abort (); |
252b5132 RH |
1248 | return BFD_RELOC_NONE; |
1249 | } | |
1250 | ||
47926f60 KH |
1251 | /* Here we decide which fixups can be adjusted to make them relative to |
1252 | the beginning of the section instead of the symbol. Basically we need | |
1253 | to make sure that the dynamic relocations are done correctly, so in | |
1254 | some cases we force the original symbol to be used. */ | |
1255 | ||
252b5132 | 1256 | int |
c0c949c7 | 1257 | tc_i386_fix_adjustable (fixP) |
31312f95 | 1258 | fixS *fixP ATTRIBUTE_UNUSED; |
252b5132 | 1259 | { |
6d249963 | 1260 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
31312f95 AM |
1261 | if (OUTPUT_FLAVOR != bfd_target_elf_flavour) |
1262 | return 1; | |
1263 | ||
a161fe53 AM |
1264 | /* Don't adjust pc-relative references to merge sections in 64-bit |
1265 | mode. */ | |
1266 | if (use_rela_relocations | |
1267 | && (S_GET_SEGMENT (fixP->fx_addsy)->flags & SEC_MERGE) != 0 | |
1268 | && fixP->fx_pcrel) | |
252b5132 | 1269 | return 0; |
31312f95 | 1270 | |
8d01d9a9 AJ |
1271 | /* The x86_64 GOTPCREL are represented as 32bit PCrel relocations |
1272 | and changed later by validate_fix. */ | |
1273 | if (GOT_symbol && fixP->fx_subsy == GOT_symbol | |
1274 | && fixP->fx_r_type == BFD_RELOC_32_PCREL) | |
1275 | return 0; | |
1276 | ||
ce8a8b2f | 1277 | /* adjust_reloc_syms doesn't know about the GOT. */ |
252b5132 RH |
1278 | if (fixP->fx_r_type == BFD_RELOC_386_GOTOFF |
1279 | || fixP->fx_r_type == BFD_RELOC_386_PLT32 | |
1280 | || fixP->fx_r_type == BFD_RELOC_386_GOT32 | |
13ae64f3 JJ |
1281 | || fixP->fx_r_type == BFD_RELOC_386_TLS_GD |
1282 | || fixP->fx_r_type == BFD_RELOC_386_TLS_LDM | |
1283 | || fixP->fx_r_type == BFD_RELOC_386_TLS_LDO_32 | |
1284 | || fixP->fx_r_type == BFD_RELOC_386_TLS_IE_32 | |
37e55690 JJ |
1285 | || fixP->fx_r_type == BFD_RELOC_386_TLS_IE |
1286 | || fixP->fx_r_type == BFD_RELOC_386_TLS_GOTIE | |
13ae64f3 JJ |
1287 | || fixP->fx_r_type == BFD_RELOC_386_TLS_LE_32 |
1288 | || fixP->fx_r_type == BFD_RELOC_386_TLS_LE | |
3e73aa7c JH |
1289 | || fixP->fx_r_type == BFD_RELOC_X86_64_PLT32 |
1290 | || fixP->fx_r_type == BFD_RELOC_X86_64_GOT32 | |
80b3ee89 | 1291 | || fixP->fx_r_type == BFD_RELOC_X86_64_GOTPCREL |
bffbf940 JJ |
1292 | || fixP->fx_r_type == BFD_RELOC_X86_64_TLSGD |
1293 | || fixP->fx_r_type == BFD_RELOC_X86_64_TLSLD | |
1294 | || fixP->fx_r_type == BFD_RELOC_X86_64_DTPOFF32 | |
1295 | || fixP->fx_r_type == BFD_RELOC_X86_64_GOTTPOFF | |
1296 | || fixP->fx_r_type == BFD_RELOC_X86_64_TPOFF32 | |
252b5132 RH |
1297 | || fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT |
1298 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
1299 | return 0; | |
31312f95 | 1300 | #endif |
252b5132 RH |
1301 | return 1; |
1302 | } | |
252b5132 | 1303 | |
29b0f896 | 1304 | static int intel_float_operand PARAMS ((const char *mnemonic)); |
b4cac588 AM |
1305 | |
1306 | static int | |
252b5132 | 1307 | intel_float_operand (mnemonic) |
29b0f896 | 1308 | const char *mnemonic; |
252b5132 | 1309 | { |
9306ca4a JB |
1310 | /* Note that the value returned is meaningful only for opcodes with (memory) |
1311 | operands, hence the code here is free to improperly handle opcodes that | |
1312 | have no operands (for better performance and smaller code). */ | |
1313 | ||
1314 | if (mnemonic[0] != 'f') | |
1315 | return 0; /* non-math */ | |
1316 | ||
1317 | switch (mnemonic[1]) | |
1318 | { | |
1319 | /* fclex, fdecstp, fdisi, femms, feni, fincstp, finit, fsetpm, and | |
1320 | the fs segment override prefix not currently handled because no | |
1321 | call path can make opcodes without operands get here */ | |
1322 | case 'i': | |
1323 | return 2 /* integer op */; | |
1324 | case 'l': | |
1325 | if (mnemonic[2] == 'd' && (mnemonic[3] == 'c' || mnemonic[3] == 'e')) | |
1326 | return 3; /* fldcw/fldenv */ | |
1327 | break; | |
1328 | case 'n': | |
1329 | if (mnemonic[2] != 'o' /* fnop */) | |
1330 | return 3; /* non-waiting control op */ | |
1331 | break; | |
1332 | case 'r': | |
1333 | if (mnemonic[2] == 's') | |
1334 | return 3; /* frstor/frstpm */ | |
1335 | break; | |
1336 | case 's': | |
1337 | if (mnemonic[2] == 'a') | |
1338 | return 3; /* fsave */ | |
1339 | if (mnemonic[2] == 't') | |
1340 | { | |
1341 | switch (mnemonic[3]) | |
1342 | { | |
1343 | case 'c': /* fstcw */ | |
1344 | case 'd': /* fstdw */ | |
1345 | case 'e': /* fstenv */ | |
1346 | case 's': /* fsts[gw] */ | |
1347 | return 3; | |
1348 | } | |
1349 | } | |
1350 | break; | |
1351 | case 'x': | |
1352 | if (mnemonic[2] == 'r' || mnemonic[2] == 's') | |
1353 | return 0; /* fxsave/fxrstor are not really math ops */ | |
1354 | break; | |
1355 | } | |
252b5132 | 1356 | |
9306ca4a | 1357 | return 1; |
252b5132 RH |
1358 | } |
1359 | ||
1360 | /* This is the guts of the machine-dependent assembler. LINE points to a | |
1361 | machine dependent instruction. This function is supposed to emit | |
1362 | the frags/bytes it assembles to. */ | |
1363 | ||
1364 | void | |
1365 | md_assemble (line) | |
1366 | char *line; | |
1367 | { | |
252b5132 | 1368 | int j; |
252b5132 RH |
1369 | char mnemonic[MAX_MNEM_SIZE]; |
1370 | ||
47926f60 | 1371 | /* Initialize globals. */ |
252b5132 RH |
1372 | memset (&i, '\0', sizeof (i)); |
1373 | for (j = 0; j < MAX_OPERANDS; j++) | |
1ae12ab7 | 1374 | i.reloc[j] = NO_RELOC; |
252b5132 RH |
1375 | memset (disp_expressions, '\0', sizeof (disp_expressions)); |
1376 | memset (im_expressions, '\0', sizeof (im_expressions)); | |
ce8a8b2f | 1377 | save_stack_p = save_stack; |
252b5132 RH |
1378 | |
1379 | /* First parse an instruction mnemonic & call i386_operand for the operands. | |
1380 | We assume that the scrubber has arranged it so that line[0] is the valid | |
47926f60 | 1381 | start of a (possibly prefixed) mnemonic. */ |
252b5132 | 1382 | |
29b0f896 AM |
1383 | line = parse_insn (line, mnemonic); |
1384 | if (line == NULL) | |
1385 | return; | |
252b5132 | 1386 | |
29b0f896 AM |
1387 | line = parse_operands (line, mnemonic); |
1388 | if (line == NULL) | |
1389 | return; | |
252b5132 | 1390 | |
29b0f896 AM |
1391 | /* Now we've parsed the mnemonic into a set of templates, and have the |
1392 | operands at hand. */ | |
1393 | ||
1394 | /* All intel opcodes have reversed operands except for "bound" and | |
1395 | "enter". We also don't reverse intersegment "jmp" and "call" | |
1396 | instructions with 2 immediate operands so that the immediate segment | |
1397 | precedes the offset, as it does when in AT&T mode. "enter" and the | |
1398 | intersegment "jmp" and "call" instructions are the only ones that | |
1399 | have two immediate operands. */ | |
1400 | if (intel_syntax && i.operands > 1 | |
1401 | && (strcmp (mnemonic, "bound") != 0) | |
1402 | && !((i.types[0] & Imm) && (i.types[1] & Imm))) | |
1403 | swap_operands (); | |
1404 | ||
1405 | if (i.imm_operands) | |
1406 | optimize_imm (); | |
1407 | ||
1408 | if (i.disp_operands) | |
1409 | optimize_disp (); | |
1410 | ||
1411 | /* Next, we find a template that matches the given insn, | |
1412 | making sure the overlap of the given operands types is consistent | |
1413 | with the template operand types. */ | |
252b5132 | 1414 | |
29b0f896 AM |
1415 | if (!match_template ()) |
1416 | return; | |
252b5132 | 1417 | |
cd61ebfe AM |
1418 | if (intel_syntax) |
1419 | { | |
1420 | /* Undo SYSV386_COMPAT brokenness when in Intel mode. See i386.h */ | |
1421 | if (SYSV386_COMPAT | |
1422 | && (i.tm.base_opcode & 0xfffffde0) == 0xdce0) | |
1423 | i.tm.base_opcode ^= FloatR; | |
1424 | ||
1425 | /* Zap movzx and movsx suffix. The suffix may have been set from | |
1426 | "word ptr" or "byte ptr" on the source operand, but we'll use | |
1427 | the suffix later to choose the destination register. */ | |
1428 | if ((i.tm.base_opcode & ~9) == 0x0fb6) | |
9306ca4a JB |
1429 | { |
1430 | if (i.reg_operands < 2 | |
1431 | && !i.suffix | |
1432 | && (~i.tm.opcode_modifier | |
1433 | & (No_bSuf | |
1434 | | No_wSuf | |
1435 | | No_lSuf | |
1436 | | No_sSuf | |
1437 | | No_xSuf | |
1438 | | No_qSuf))) | |
1439 | as_bad (_("ambiguous operand size for `%s'"), i.tm.name); | |
1440 | ||
1441 | i.suffix = 0; | |
1442 | } | |
cd61ebfe | 1443 | } |
24eab124 | 1444 | |
29b0f896 AM |
1445 | if (i.tm.opcode_modifier & FWait) |
1446 | if (!add_prefix (FWAIT_OPCODE)) | |
1447 | return; | |
252b5132 | 1448 | |
29b0f896 AM |
1449 | /* Check string instruction segment overrides. */ |
1450 | if ((i.tm.opcode_modifier & IsString) != 0 && i.mem_operands != 0) | |
1451 | { | |
1452 | if (!check_string ()) | |
5dd0794d | 1453 | return; |
29b0f896 | 1454 | } |
5dd0794d | 1455 | |
29b0f896 AM |
1456 | if (!process_suffix ()) |
1457 | return; | |
e413e4e9 | 1458 | |
29b0f896 AM |
1459 | /* Make still unresolved immediate matches conform to size of immediate |
1460 | given in i.suffix. */ | |
1461 | if (!finalize_imm ()) | |
1462 | return; | |
252b5132 | 1463 | |
29b0f896 AM |
1464 | if (i.types[0] & Imm1) |
1465 | i.imm_operands = 0; /* kludge for shift insns. */ | |
1466 | if (i.types[0] & ImplicitRegister) | |
1467 | i.reg_operands--; | |
1468 | if (i.types[1] & ImplicitRegister) | |
1469 | i.reg_operands--; | |
1470 | if (i.types[2] & ImplicitRegister) | |
1471 | i.reg_operands--; | |
252b5132 | 1472 | |
29b0f896 AM |
1473 | if (i.tm.opcode_modifier & ImmExt) |
1474 | { | |
02fc3089 L |
1475 | expressionS *exp; |
1476 | ||
ca164297 L |
1477 | if ((i.tm.cpu_flags & CpuPNI) && i.operands > 0) |
1478 | { | |
67c1ffbe | 1479 | /* These Intel Prescott New Instructions have the fixed |
ca164297 L |
1480 | operands with an opcode suffix which is coded in the same |
1481 | place as an 8-bit immediate field would be. Here we check | |
1482 | those operands and remove them afterwards. */ | |
1483 | unsigned int x; | |
1484 | ||
a4622f40 | 1485 | for (x = 0; x < i.operands; x++) |
ca164297 L |
1486 | if (i.op[x].regs->reg_num != x) |
1487 | as_bad (_("can't use register '%%%s' as operand %d in '%s'."), | |
1488 | i.op[x].regs->reg_name, x + 1, i.tm.name); | |
1489 | i.operands = 0; | |
1490 | } | |
1491 | ||
29b0f896 AM |
1492 | /* These AMD 3DNow! and Intel Katmai New Instructions have an |
1493 | opcode suffix which is coded in the same place as an 8-bit | |
1494 | immediate field would be. Here we fake an 8-bit immediate | |
1495 | operand from the opcode suffix stored in tm.extension_opcode. */ | |
252b5132 | 1496 | |
29b0f896 | 1497 | assert (i.imm_operands == 0 && i.operands <= 2 && 2 < MAX_OPERANDS); |
252b5132 | 1498 | |
29b0f896 AM |
1499 | exp = &im_expressions[i.imm_operands++]; |
1500 | i.op[i.operands].imms = exp; | |
1501 | i.types[i.operands++] = Imm8; | |
1502 | exp->X_op = O_constant; | |
1503 | exp->X_add_number = i.tm.extension_opcode; | |
1504 | i.tm.extension_opcode = None; | |
1505 | } | |
252b5132 | 1506 | |
29b0f896 AM |
1507 | /* For insns with operands there are more diddles to do to the opcode. */ |
1508 | if (i.operands) | |
1509 | { | |
1510 | if (!process_operands ()) | |
1511 | return; | |
1512 | } | |
1513 | else if (!quiet_warnings && (i.tm.opcode_modifier & Ugh) != 0) | |
1514 | { | |
1515 | /* UnixWare fsub no args is alias for fsubp, fadd -> faddp, etc. */ | |
1516 | as_warn (_("translating to `%sp'"), i.tm.name); | |
1517 | } | |
252b5132 | 1518 | |
29b0f896 AM |
1519 | /* Handle conversion of 'int $3' --> special int3 insn. */ |
1520 | if (i.tm.base_opcode == INT_OPCODE && i.op[0].imms->X_add_number == 3) | |
1521 | { | |
1522 | i.tm.base_opcode = INT3_OPCODE; | |
1523 | i.imm_operands = 0; | |
1524 | } | |
252b5132 | 1525 | |
29b0f896 AM |
1526 | if ((i.tm.opcode_modifier & (Jump | JumpByte | JumpDword)) |
1527 | && i.op[0].disps->X_op == O_constant) | |
1528 | { | |
1529 | /* Convert "jmp constant" (and "call constant") to a jump (call) to | |
1530 | the absolute address given by the constant. Since ix86 jumps and | |
1531 | calls are pc relative, we need to generate a reloc. */ | |
1532 | i.op[0].disps->X_add_symbol = &abs_symbol; | |
1533 | i.op[0].disps->X_op = O_symbol; | |
1534 | } | |
252b5132 | 1535 | |
29b0f896 AM |
1536 | if ((i.tm.opcode_modifier & Rex64) != 0) |
1537 | i.rex |= REX_MODE64; | |
252b5132 | 1538 | |
29b0f896 AM |
1539 | /* For 8 bit registers we need an empty rex prefix. Also if the |
1540 | instruction already has a prefix, we need to convert old | |
1541 | registers to new ones. */ | |
773f551c | 1542 | |
29b0f896 AM |
1543 | if (((i.types[0] & Reg8) != 0 |
1544 | && (i.op[0].regs->reg_flags & RegRex64) != 0) | |
1545 | || ((i.types[1] & Reg8) != 0 | |
1546 | && (i.op[1].regs->reg_flags & RegRex64) != 0) | |
1547 | || (((i.types[0] & Reg8) != 0 || (i.types[1] & Reg8) != 0) | |
1548 | && i.rex != 0)) | |
1549 | { | |
1550 | int x; | |
726c5dcd | 1551 | |
29b0f896 AM |
1552 | i.rex |= REX_OPCODE; |
1553 | for (x = 0; x < 2; x++) | |
1554 | { | |
1555 | /* Look for 8 bit operand that uses old registers. */ | |
1556 | if ((i.types[x] & Reg8) != 0 | |
1557 | && (i.op[x].regs->reg_flags & RegRex64) == 0) | |
773f551c | 1558 | { |
29b0f896 AM |
1559 | /* In case it is "hi" register, give up. */ |
1560 | if (i.op[x].regs->reg_num > 3) | |
0477af35 | 1561 | as_bad (_("can't encode register '%%%s' in an instruction requiring REX prefix."), |
29b0f896 | 1562 | i.op[x].regs->reg_name); |
773f551c | 1563 | |
29b0f896 AM |
1564 | /* Otherwise it is equivalent to the extended register. |
1565 | Since the encoding doesn't change this is merely | |
1566 | cosmetic cleanup for debug output. */ | |
1567 | ||
1568 | i.op[x].regs = i.op[x].regs + 8; | |
773f551c | 1569 | } |
29b0f896 AM |
1570 | } |
1571 | } | |
773f551c | 1572 | |
29b0f896 AM |
1573 | if (i.rex != 0) |
1574 | add_prefix (REX_OPCODE | i.rex); | |
1575 | ||
1576 | /* We are ready to output the insn. */ | |
1577 | output_insn (); | |
1578 | } | |
1579 | ||
1580 | static char * | |
1581 | parse_insn (line, mnemonic) | |
1582 | char *line; | |
1583 | char *mnemonic; | |
1584 | { | |
1585 | char *l = line; | |
1586 | char *token_start = l; | |
1587 | char *mnem_p; | |
5c6af06e JB |
1588 | int supported; |
1589 | const template *t; | |
29b0f896 AM |
1590 | |
1591 | /* Non-zero if we found a prefix only acceptable with string insns. */ | |
1592 | const char *expecting_string_instruction = NULL; | |
45288df1 | 1593 | |
29b0f896 AM |
1594 | while (1) |
1595 | { | |
1596 | mnem_p = mnemonic; | |
1597 | while ((*mnem_p = mnemonic_chars[(unsigned char) *l]) != 0) | |
1598 | { | |
1599 | mnem_p++; | |
1600 | if (mnem_p >= mnemonic + MAX_MNEM_SIZE) | |
45288df1 | 1601 | { |
29b0f896 AM |
1602 | as_bad (_("no such instruction: `%s'"), token_start); |
1603 | return NULL; | |
1604 | } | |
1605 | l++; | |
1606 | } | |
1607 | if (!is_space_char (*l) | |
1608 | && *l != END_OF_INSN | |
e44823cf JB |
1609 | && (intel_syntax |
1610 | || (*l != PREFIX_SEPARATOR | |
1611 | && *l != ','))) | |
29b0f896 AM |
1612 | { |
1613 | as_bad (_("invalid character %s in mnemonic"), | |
1614 | output_invalid (*l)); | |
1615 | return NULL; | |
1616 | } | |
1617 | if (token_start == l) | |
1618 | { | |
e44823cf | 1619 | if (!intel_syntax && *l == PREFIX_SEPARATOR) |
29b0f896 AM |
1620 | as_bad (_("expecting prefix; got nothing")); |
1621 | else | |
1622 | as_bad (_("expecting mnemonic; got nothing")); | |
1623 | return NULL; | |
1624 | } | |
45288df1 | 1625 | |
29b0f896 AM |
1626 | /* Look up instruction (or prefix) via hash table. */ |
1627 | current_templates = hash_find (op_hash, mnemonic); | |
47926f60 | 1628 | |
29b0f896 AM |
1629 | if (*l != END_OF_INSN |
1630 | && (!is_space_char (*l) || l[1] != END_OF_INSN) | |
1631 | && current_templates | |
1632 | && (current_templates->start->opcode_modifier & IsPrefix)) | |
1633 | { | |
1634 | /* If we are in 16-bit mode, do not allow addr16 or data16. | |
1635 | Similarly, in 32-bit mode, do not allow addr32 or data32. */ | |
1636 | if ((current_templates->start->opcode_modifier & (Size16 | Size32)) | |
1637 | && flag_code != CODE_64BIT | |
1638 | && (((current_templates->start->opcode_modifier & Size32) != 0) | |
1639 | ^ (flag_code == CODE_16BIT))) | |
1640 | { | |
1641 | as_bad (_("redundant %s prefix"), | |
1642 | current_templates->start->name); | |
1643 | return NULL; | |
45288df1 | 1644 | } |
29b0f896 AM |
1645 | /* Add prefix, checking for repeated prefixes. */ |
1646 | switch (add_prefix (current_templates->start->base_opcode)) | |
1647 | { | |
1648 | case 0: | |
1649 | return NULL; | |
1650 | case 2: | |
1651 | expecting_string_instruction = current_templates->start->name; | |
1652 | break; | |
1653 | } | |
1654 | /* Skip past PREFIX_SEPARATOR and reset token_start. */ | |
1655 | token_start = ++l; | |
1656 | } | |
1657 | else | |
1658 | break; | |
1659 | } | |
45288df1 | 1660 | |
29b0f896 AM |
1661 | if (!current_templates) |
1662 | { | |
1663 | /* See if we can get a match by trimming off a suffix. */ | |
1664 | switch (mnem_p[-1]) | |
1665 | { | |
1666 | case WORD_MNEM_SUFFIX: | |
9306ca4a JB |
1667 | if (intel_syntax && (intel_float_operand (mnemonic) & 2)) |
1668 | i.suffix = SHORT_MNEM_SUFFIX; | |
1669 | else | |
29b0f896 AM |
1670 | case BYTE_MNEM_SUFFIX: |
1671 | case QWORD_MNEM_SUFFIX: | |
1672 | i.suffix = mnem_p[-1]; | |
1673 | mnem_p[-1] = '\0'; | |
1674 | current_templates = hash_find (op_hash, mnemonic); | |
1675 | break; | |
1676 | case SHORT_MNEM_SUFFIX: | |
1677 | case LONG_MNEM_SUFFIX: | |
1678 | if (!intel_syntax) | |
1679 | { | |
1680 | i.suffix = mnem_p[-1]; | |
1681 | mnem_p[-1] = '\0'; | |
1682 | current_templates = hash_find (op_hash, mnemonic); | |
1683 | } | |
1684 | break; | |
252b5132 | 1685 | |
29b0f896 AM |
1686 | /* Intel Syntax. */ |
1687 | case 'd': | |
1688 | if (intel_syntax) | |
1689 | { | |
9306ca4a | 1690 | if (intel_float_operand (mnemonic) == 1) |
29b0f896 AM |
1691 | i.suffix = SHORT_MNEM_SUFFIX; |
1692 | else | |
1693 | i.suffix = LONG_MNEM_SUFFIX; | |
1694 | mnem_p[-1] = '\0'; | |
1695 | current_templates = hash_find (op_hash, mnemonic); | |
1696 | } | |
1697 | break; | |
1698 | } | |
1699 | if (!current_templates) | |
1700 | { | |
1701 | as_bad (_("no such instruction: `%s'"), token_start); | |
1702 | return NULL; | |
1703 | } | |
1704 | } | |
252b5132 | 1705 | |
29b0f896 AM |
1706 | if (current_templates->start->opcode_modifier & (Jump | JumpByte)) |
1707 | { | |
1708 | /* Check for a branch hint. We allow ",pt" and ",pn" for | |
1709 | predict taken and predict not taken respectively. | |
1710 | I'm not sure that branch hints actually do anything on loop | |
1711 | and jcxz insns (JumpByte) for current Pentium4 chips. They | |
1712 | may work in the future and it doesn't hurt to accept them | |
1713 | now. */ | |
1714 | if (l[0] == ',' && l[1] == 'p') | |
1715 | { | |
1716 | if (l[2] == 't') | |
1717 | { | |
1718 | if (!add_prefix (DS_PREFIX_OPCODE)) | |
1719 | return NULL; | |
1720 | l += 3; | |
1721 | } | |
1722 | else if (l[2] == 'n') | |
1723 | { | |
1724 | if (!add_prefix (CS_PREFIX_OPCODE)) | |
1725 | return NULL; | |
1726 | l += 3; | |
1727 | } | |
1728 | } | |
1729 | } | |
1730 | /* Any other comma loses. */ | |
1731 | if (*l == ',') | |
1732 | { | |
1733 | as_bad (_("invalid character %s in mnemonic"), | |
1734 | output_invalid (*l)); | |
1735 | return NULL; | |
1736 | } | |
252b5132 | 1737 | |
29b0f896 | 1738 | /* Check if instruction is supported on specified architecture. */ |
5c6af06e JB |
1739 | supported = 0; |
1740 | for (t = current_templates->start; t < current_templates->end; ++t) | |
1741 | { | |
1742 | if (!((t->cpu_flags & ~(Cpu64 | CpuNo64)) | |
1743 | & ~(cpu_arch_flags & ~(Cpu64 | CpuNo64)))) | |
1744 | supported |= 1; | |
1745 | if (!(t->cpu_flags & (flag_code == CODE_64BIT ? CpuNo64 : Cpu64))) | |
1746 | supported |= 2; | |
1747 | } | |
1748 | if (!(supported & 2)) | |
1749 | { | |
1750 | as_bad (flag_code == CODE_64BIT | |
1751 | ? _("`%s' is not supported in 64-bit mode") | |
1752 | : _("`%s' is only supported in 64-bit mode"), | |
1753 | current_templates->start->name); | |
1754 | return NULL; | |
1755 | } | |
1756 | if (!(supported & 1)) | |
29b0f896 | 1757 | { |
5c6af06e JB |
1758 | as_warn (_("`%s' is not supported on `%s%s'"), |
1759 | current_templates->start->name, | |
1760 | cpu_arch_name, | |
1761 | cpu_sub_arch_name ? cpu_sub_arch_name : ""); | |
29b0f896 AM |
1762 | } |
1763 | else if ((Cpu386 & ~cpu_arch_flags) && (flag_code != CODE_16BIT)) | |
1764 | { | |
1765 | as_warn (_("use .code16 to ensure correct addressing mode")); | |
1766 | } | |
252b5132 | 1767 | |
29b0f896 | 1768 | /* Check for rep/repne without a string instruction. */ |
f41bbced | 1769 | if (expecting_string_instruction) |
29b0f896 | 1770 | { |
f41bbced JB |
1771 | static templates override; |
1772 | ||
1773 | for (t = current_templates->start; t < current_templates->end; ++t) | |
1774 | if (t->opcode_modifier & IsString) | |
1775 | break; | |
1776 | if (t >= current_templates->end) | |
1777 | { | |
1778 | as_bad (_("expecting string instruction after `%s'"), | |
1779 | expecting_string_instruction); | |
1780 | return NULL; | |
1781 | } | |
1782 | for (override.start = t; t < current_templates->end; ++t) | |
1783 | if (!(t->opcode_modifier & IsString)) | |
1784 | break; | |
1785 | override.end = t; | |
1786 | current_templates = &override; | |
29b0f896 | 1787 | } |
252b5132 | 1788 | |
29b0f896 AM |
1789 | return l; |
1790 | } | |
252b5132 | 1791 | |
29b0f896 AM |
1792 | static char * |
1793 | parse_operands (l, mnemonic) | |
1794 | char *l; | |
1795 | const char *mnemonic; | |
1796 | { | |
1797 | char *token_start; | |
3138f287 | 1798 | |
29b0f896 AM |
1799 | /* 1 if operand is pending after ','. */ |
1800 | unsigned int expecting_operand = 0; | |
252b5132 | 1801 | |
29b0f896 AM |
1802 | /* Non-zero if operand parens not balanced. */ |
1803 | unsigned int paren_not_balanced; | |
1804 | ||
1805 | while (*l != END_OF_INSN) | |
1806 | { | |
1807 | /* Skip optional white space before operand. */ | |
1808 | if (is_space_char (*l)) | |
1809 | ++l; | |
1810 | if (!is_operand_char (*l) && *l != END_OF_INSN) | |
1811 | { | |
1812 | as_bad (_("invalid character %s before operand %d"), | |
1813 | output_invalid (*l), | |
1814 | i.operands + 1); | |
1815 | return NULL; | |
1816 | } | |
1817 | token_start = l; /* after white space */ | |
1818 | paren_not_balanced = 0; | |
1819 | while (paren_not_balanced || *l != ',') | |
1820 | { | |
1821 | if (*l == END_OF_INSN) | |
1822 | { | |
1823 | if (paren_not_balanced) | |
1824 | { | |
1825 | if (!intel_syntax) | |
1826 | as_bad (_("unbalanced parenthesis in operand %d."), | |
1827 | i.operands + 1); | |
1828 | else | |
1829 | as_bad (_("unbalanced brackets in operand %d."), | |
1830 | i.operands + 1); | |
1831 | return NULL; | |
1832 | } | |
1833 | else | |
1834 | break; /* we are done */ | |
1835 | } | |
1836 | else if (!is_operand_char (*l) && !is_space_char (*l)) | |
1837 | { | |
1838 | as_bad (_("invalid character %s in operand %d"), | |
1839 | output_invalid (*l), | |
1840 | i.operands + 1); | |
1841 | return NULL; | |
1842 | } | |
1843 | if (!intel_syntax) | |
1844 | { | |
1845 | if (*l == '(') | |
1846 | ++paren_not_balanced; | |
1847 | if (*l == ')') | |
1848 | --paren_not_balanced; | |
1849 | } | |
1850 | else | |
1851 | { | |
1852 | if (*l == '[') | |
1853 | ++paren_not_balanced; | |
1854 | if (*l == ']') | |
1855 | --paren_not_balanced; | |
1856 | } | |
1857 | l++; | |
1858 | } | |
1859 | if (l != token_start) | |
1860 | { /* Yes, we've read in another operand. */ | |
1861 | unsigned int operand_ok; | |
1862 | this_operand = i.operands++; | |
1863 | if (i.operands > MAX_OPERANDS) | |
1864 | { | |
1865 | as_bad (_("spurious operands; (%d operands/instruction max)"), | |
1866 | MAX_OPERANDS); | |
1867 | return NULL; | |
1868 | } | |
1869 | /* Now parse operand adding info to 'i' as we go along. */ | |
1870 | END_STRING_AND_SAVE (l); | |
1871 | ||
1872 | if (intel_syntax) | |
1873 | operand_ok = | |
1874 | i386_intel_operand (token_start, | |
1875 | intel_float_operand (mnemonic)); | |
1876 | else | |
1877 | operand_ok = i386_operand (token_start); | |
1878 | ||
1879 | RESTORE_END_STRING (l); | |
1880 | if (!operand_ok) | |
1881 | return NULL; | |
1882 | } | |
1883 | else | |
1884 | { | |
1885 | if (expecting_operand) | |
1886 | { | |
1887 | expecting_operand_after_comma: | |
1888 | as_bad (_("expecting operand after ','; got nothing")); | |
1889 | return NULL; | |
1890 | } | |
1891 | if (*l == ',') | |
1892 | { | |
1893 | as_bad (_("expecting operand before ','; got nothing")); | |
1894 | return NULL; | |
1895 | } | |
1896 | } | |
7f3f1ea2 | 1897 | |
29b0f896 AM |
1898 | /* Now *l must be either ',' or END_OF_INSN. */ |
1899 | if (*l == ',') | |
1900 | { | |
1901 | if (*++l == END_OF_INSN) | |
1902 | { | |
1903 | /* Just skip it, if it's \n complain. */ | |
1904 | goto expecting_operand_after_comma; | |
1905 | } | |
1906 | expecting_operand = 1; | |
1907 | } | |
1908 | } | |
1909 | return l; | |
1910 | } | |
7f3f1ea2 | 1911 | |
29b0f896 AM |
1912 | static void |
1913 | swap_operands () | |
1914 | { | |
1915 | union i386_op temp_op; | |
1916 | unsigned int temp_type; | |
f86103b7 | 1917 | enum bfd_reloc_code_real temp_reloc; |
29b0f896 AM |
1918 | int xchg1 = 0; |
1919 | int xchg2 = 0; | |
252b5132 | 1920 | |
29b0f896 AM |
1921 | if (i.operands == 2) |
1922 | { | |
1923 | xchg1 = 0; | |
1924 | xchg2 = 1; | |
1925 | } | |
1926 | else if (i.operands == 3) | |
1927 | { | |
1928 | xchg1 = 0; | |
1929 | xchg2 = 2; | |
1930 | } | |
1931 | temp_type = i.types[xchg2]; | |
1932 | i.types[xchg2] = i.types[xchg1]; | |
1933 | i.types[xchg1] = temp_type; | |
1934 | temp_op = i.op[xchg2]; | |
1935 | i.op[xchg2] = i.op[xchg1]; | |
1936 | i.op[xchg1] = temp_op; | |
1937 | temp_reloc = i.reloc[xchg2]; | |
1938 | i.reloc[xchg2] = i.reloc[xchg1]; | |
1939 | i.reloc[xchg1] = temp_reloc; | |
1940 | ||
1941 | if (i.mem_operands == 2) | |
1942 | { | |
1943 | const seg_entry *temp_seg; | |
1944 | temp_seg = i.seg[0]; | |
1945 | i.seg[0] = i.seg[1]; | |
1946 | i.seg[1] = temp_seg; | |
1947 | } | |
1948 | } | |
252b5132 | 1949 | |
29b0f896 AM |
1950 | /* Try to ensure constant immediates are represented in the smallest |
1951 | opcode possible. */ | |
1952 | static void | |
1953 | optimize_imm () | |
1954 | { | |
1955 | char guess_suffix = 0; | |
1956 | int op; | |
252b5132 | 1957 | |
29b0f896 AM |
1958 | if (i.suffix) |
1959 | guess_suffix = i.suffix; | |
1960 | else if (i.reg_operands) | |
1961 | { | |
1962 | /* Figure out a suffix from the last register operand specified. | |
1963 | We can't do this properly yet, ie. excluding InOutPortReg, | |
1964 | but the following works for instructions with immediates. | |
1965 | In any case, we can't set i.suffix yet. */ | |
1966 | for (op = i.operands; --op >= 0;) | |
1967 | if (i.types[op] & Reg) | |
252b5132 | 1968 | { |
29b0f896 AM |
1969 | if (i.types[op] & Reg8) |
1970 | guess_suffix = BYTE_MNEM_SUFFIX; | |
1971 | else if (i.types[op] & Reg16) | |
1972 | guess_suffix = WORD_MNEM_SUFFIX; | |
1973 | else if (i.types[op] & Reg32) | |
1974 | guess_suffix = LONG_MNEM_SUFFIX; | |
1975 | else if (i.types[op] & Reg64) | |
1976 | guess_suffix = QWORD_MNEM_SUFFIX; | |
1977 | break; | |
252b5132 | 1978 | } |
29b0f896 AM |
1979 | } |
1980 | else if ((flag_code == CODE_16BIT) ^ (i.prefix[DATA_PREFIX] != 0)) | |
1981 | guess_suffix = WORD_MNEM_SUFFIX; | |
1982 | ||
1983 | for (op = i.operands; --op >= 0;) | |
1984 | if (i.types[op] & Imm) | |
1985 | { | |
1986 | switch (i.op[op].imms->X_op) | |
252b5132 | 1987 | { |
29b0f896 AM |
1988 | case O_constant: |
1989 | /* If a suffix is given, this operand may be shortened. */ | |
1990 | switch (guess_suffix) | |
252b5132 | 1991 | { |
29b0f896 AM |
1992 | case LONG_MNEM_SUFFIX: |
1993 | i.types[op] |= Imm32 | Imm64; | |
1994 | break; | |
1995 | case WORD_MNEM_SUFFIX: | |
1996 | i.types[op] |= Imm16 | Imm32S | Imm32 | Imm64; | |
1997 | break; | |
1998 | case BYTE_MNEM_SUFFIX: | |
1999 | i.types[op] |= Imm16 | Imm8 | Imm8S | Imm32S | Imm32 | Imm64; | |
2000 | break; | |
252b5132 | 2001 | } |
252b5132 | 2002 | |
29b0f896 AM |
2003 | /* If this operand is at most 16 bits, convert it |
2004 | to a signed 16 bit number before trying to see | |
2005 | whether it will fit in an even smaller size. | |
2006 | This allows a 16-bit operand such as $0xffe0 to | |
2007 | be recognised as within Imm8S range. */ | |
2008 | if ((i.types[op] & Imm16) | |
2009 | && (i.op[op].imms->X_add_number & ~(offsetT) 0xffff) == 0) | |
252b5132 | 2010 | { |
29b0f896 AM |
2011 | i.op[op].imms->X_add_number = |
2012 | (((i.op[op].imms->X_add_number & 0xffff) ^ 0x8000) - 0x8000); | |
2013 | } | |
2014 | if ((i.types[op] & Imm32) | |
2015 | && ((i.op[op].imms->X_add_number & ~(((offsetT) 2 << 31) - 1)) | |
2016 | == 0)) | |
2017 | { | |
2018 | i.op[op].imms->X_add_number = ((i.op[op].imms->X_add_number | |
2019 | ^ ((offsetT) 1 << 31)) | |
2020 | - ((offsetT) 1 << 31)); | |
2021 | } | |
2022 | i.types[op] |= smallest_imm_type (i.op[op].imms->X_add_number); | |
252b5132 | 2023 | |
29b0f896 AM |
2024 | /* We must avoid matching of Imm32 templates when 64bit |
2025 | only immediate is available. */ | |
2026 | if (guess_suffix == QWORD_MNEM_SUFFIX) | |
2027 | i.types[op] &= ~Imm32; | |
2028 | break; | |
252b5132 | 2029 | |
29b0f896 AM |
2030 | case O_absent: |
2031 | case O_register: | |
2032 | abort (); | |
2033 | ||
2034 | /* Symbols and expressions. */ | |
2035 | default: | |
2036 | /* Convert symbolic operand to proper sizes for matching. */ | |
2037 | switch (guess_suffix) | |
2038 | { | |
2039 | case QWORD_MNEM_SUFFIX: | |
2040 | i.types[op] = Imm64 | Imm32S; | |
2041 | break; | |
2042 | case LONG_MNEM_SUFFIX: | |
20f0a1fc | 2043 | i.types[op] = Imm32; |
29b0f896 AM |
2044 | break; |
2045 | case WORD_MNEM_SUFFIX: | |
20f0a1fc | 2046 | i.types[op] = Imm16; |
29b0f896 AM |
2047 | break; |
2048 | case BYTE_MNEM_SUFFIX: | |
20f0a1fc | 2049 | i.types[op] = Imm8 | Imm8S; |
29b0f896 | 2050 | break; |
252b5132 | 2051 | } |
29b0f896 | 2052 | break; |
252b5132 | 2053 | } |
29b0f896 AM |
2054 | } |
2055 | } | |
47926f60 | 2056 | |
29b0f896 AM |
2057 | /* Try to use the smallest displacement type too. */ |
2058 | static void | |
2059 | optimize_disp () | |
2060 | { | |
2061 | int op; | |
3e73aa7c | 2062 | |
29b0f896 AM |
2063 | for (op = i.operands; --op >= 0;) |
2064 | if ((i.types[op] & Disp) && i.op[op].disps->X_op == O_constant) | |
252b5132 | 2065 | { |
29b0f896 AM |
2066 | offsetT disp = i.op[op].disps->X_add_number; |
2067 | ||
2068 | if (i.types[op] & Disp16) | |
252b5132 | 2069 | { |
29b0f896 AM |
2070 | /* We know this operand is at most 16 bits, so |
2071 | convert to a signed 16 bit number before trying | |
2072 | to see whether it will fit in an even smaller | |
2073 | size. */ | |
2074 | ||
2075 | disp = (((disp & 0xffff) ^ 0x8000) - 0x8000); | |
252b5132 | 2076 | } |
29b0f896 | 2077 | else if (i.types[op] & Disp32) |
252b5132 | 2078 | { |
29b0f896 AM |
2079 | /* We know this operand is at most 32 bits, so convert to a |
2080 | signed 32 bit number before trying to see whether it will | |
2081 | fit in an even smaller size. */ | |
2082 | disp &= (((offsetT) 2 << 31) - 1); | |
2083 | disp = (disp ^ ((offsetT) 1 << 31)) - ((addressT) 1 << 31); | |
252b5132 | 2084 | } |
34d9ee9e JB |
2085 | if (!disp && (i.types[op] & BaseIndex)) |
2086 | { | |
2087 | i.types[op] &= ~Disp; | |
2088 | i.op[op].disps = 0; | |
2089 | i.disp_operands--; | |
2090 | } | |
2091 | else if (flag_code == CODE_64BIT) | |
252b5132 | 2092 | { |
29b0f896 AM |
2093 | if (fits_in_signed_long (disp)) |
2094 | i.types[op] |= Disp32S; | |
2095 | if (fits_in_unsigned_long (disp)) | |
2096 | i.types[op] |= Disp32; | |
252b5132 | 2097 | } |
29b0f896 AM |
2098 | if ((i.types[op] & (Disp32 | Disp32S | Disp16)) |
2099 | && fits_in_signed_byte (disp)) | |
2100 | i.types[op] |= Disp8; | |
252b5132 | 2101 | } |
29b0f896 AM |
2102 | } |
2103 | ||
2104 | static int | |
2105 | match_template () | |
2106 | { | |
2107 | /* Points to template once we've found it. */ | |
2108 | const template *t; | |
2109 | unsigned int overlap0, overlap1, overlap2; | |
2110 | unsigned int found_reverse_match; | |
2111 | int suffix_check; | |
2112 | ||
2113 | #define MATCH(overlap, given, template) \ | |
2114 | ((overlap & ~JumpAbsolute) \ | |
2115 | && (((given) & (BaseIndex | JumpAbsolute)) \ | |
2116 | == ((overlap) & (BaseIndex | JumpAbsolute)))) | |
2117 | ||
2118 | /* If given types r0 and r1 are registers they must be of the same type | |
2119 | unless the expected operand type register overlap is null. | |
2120 | Note that Acc in a template matches every size of reg. */ | |
2121 | #define CONSISTENT_REGISTER_MATCH(m0, g0, t0, m1, g1, t1) \ | |
2122 | (((g0) & Reg) == 0 || ((g1) & Reg) == 0 \ | |
2123 | || ((g0) & Reg) == ((g1) & Reg) \ | |
2124 | || ((((m0) & Acc) ? Reg : (t0)) & (((m1) & Acc) ? Reg : (t1)) & Reg) == 0 ) | |
2125 | ||
2126 | overlap0 = 0; | |
2127 | overlap1 = 0; | |
2128 | overlap2 = 0; | |
2129 | found_reverse_match = 0; | |
2130 | suffix_check = (i.suffix == BYTE_MNEM_SUFFIX | |
2131 | ? No_bSuf | |
2132 | : (i.suffix == WORD_MNEM_SUFFIX | |
2133 | ? No_wSuf | |
2134 | : (i.suffix == SHORT_MNEM_SUFFIX | |
2135 | ? No_sSuf | |
2136 | : (i.suffix == LONG_MNEM_SUFFIX | |
2137 | ? No_lSuf | |
2138 | : (i.suffix == QWORD_MNEM_SUFFIX | |
2139 | ? No_qSuf | |
2140 | : (i.suffix == LONG_DOUBLE_MNEM_SUFFIX | |
2141 | ? No_xSuf : 0)))))); | |
2142 | ||
20f0a1fc NC |
2143 | t = current_templates->start; |
2144 | if (i.suffix == QWORD_MNEM_SUFFIX | |
2145 | && flag_code != CODE_64BIT | |
9306ca4a JB |
2146 | && (intel_syntax |
2147 | ? !(t->opcode_modifier & IgnoreSize) | |
2148 | && !intel_float_operand (t->name) | |
2149 | : intel_float_operand (t->name) != 2) | |
20f0a1fc NC |
2150 | && (!(t->operand_types[0] & (RegMMX | RegXMM)) |
2151 | || !(t->operand_types[t->operands > 1] & (RegMMX | RegXMM))) | |
2152 | && (t->base_opcode != 0x0fc7 | |
2153 | || t->extension_opcode != 1 /* cmpxchg8b */)) | |
2154 | t = current_templates->end; | |
2155 | for (; t < current_templates->end; t++) | |
29b0f896 AM |
2156 | { |
2157 | /* Must have right number of operands. */ | |
2158 | if (i.operands != t->operands) | |
2159 | continue; | |
2160 | ||
2161 | /* Check the suffix, except for some instructions in intel mode. */ | |
2162 | if ((t->opcode_modifier & suffix_check) | |
2163 | && !(intel_syntax | |
9306ca4a | 2164 | && (t->opcode_modifier & IgnoreSize))) |
29b0f896 AM |
2165 | continue; |
2166 | ||
2167 | /* Do not verify operands when there are none. */ | |
2168 | else if (!t->operands) | |
2169 | { | |
2170 | if (t->cpu_flags & ~cpu_arch_flags) | |
2171 | continue; | |
2172 | /* We've found a match; break out of loop. */ | |
2173 | break; | |
2174 | } | |
252b5132 | 2175 | |
29b0f896 AM |
2176 | overlap0 = i.types[0] & t->operand_types[0]; |
2177 | switch (t->operands) | |
2178 | { | |
2179 | case 1: | |
2180 | if (!MATCH (overlap0, i.types[0], t->operand_types[0])) | |
2181 | continue; | |
2182 | break; | |
2183 | case 2: | |
2184 | case 3: | |
2185 | overlap1 = i.types[1] & t->operand_types[1]; | |
2186 | if (!MATCH (overlap0, i.types[0], t->operand_types[0]) | |
2187 | || !MATCH (overlap1, i.types[1], t->operand_types[1]) | |
2188 | || !CONSISTENT_REGISTER_MATCH (overlap0, i.types[0], | |
2189 | t->operand_types[0], | |
2190 | overlap1, i.types[1], | |
2191 | t->operand_types[1])) | |
2192 | { | |
2193 | /* Check if other direction is valid ... */ | |
2194 | if ((t->opcode_modifier & (D | FloatD)) == 0) | |
2195 | continue; | |
2196 | ||
2197 | /* Try reversing direction of operands. */ | |
2198 | overlap0 = i.types[0] & t->operand_types[1]; | |
2199 | overlap1 = i.types[1] & t->operand_types[0]; | |
2200 | if (!MATCH (overlap0, i.types[0], t->operand_types[1]) | |
2201 | || !MATCH (overlap1, i.types[1], t->operand_types[0]) | |
2202 | || !CONSISTENT_REGISTER_MATCH (overlap0, i.types[0], | |
2203 | t->operand_types[1], | |
2204 | overlap1, i.types[1], | |
2205 | t->operand_types[0])) | |
2206 | { | |
2207 | /* Does not match either direction. */ | |
2208 | continue; | |
2209 | } | |
2210 | /* found_reverse_match holds which of D or FloatDR | |
2211 | we've found. */ | |
2212 | found_reverse_match = t->opcode_modifier & (D | FloatDR); | |
2213 | } | |
2214 | /* Found a forward 2 operand match here. */ | |
2215 | else if (t->operands == 3) | |
2216 | { | |
2217 | /* Here we make use of the fact that there are no | |
2218 | reverse match 3 operand instructions, and all 3 | |
2219 | operand instructions only need to be checked for | |
2220 | register consistency between operands 2 and 3. */ | |
2221 | overlap2 = i.types[2] & t->operand_types[2]; | |
2222 | if (!MATCH (overlap2, i.types[2], t->operand_types[2]) | |
2223 | || !CONSISTENT_REGISTER_MATCH (overlap1, i.types[1], | |
2224 | t->operand_types[1], | |
2225 | overlap2, i.types[2], | |
2226 | t->operand_types[2])) | |
2227 | ||
2228 | continue; | |
2229 | } | |
2230 | /* Found either forward/reverse 2 or 3 operand match here: | |
2231 | slip through to break. */ | |
2232 | } | |
2233 | if (t->cpu_flags & ~cpu_arch_flags) | |
2234 | { | |
2235 | found_reverse_match = 0; | |
2236 | continue; | |
2237 | } | |
2238 | /* We've found a match; break out of loop. */ | |
2239 | break; | |
2240 | } | |
2241 | ||
2242 | if (t == current_templates->end) | |
2243 | { | |
2244 | /* We found no match. */ | |
2245 | as_bad (_("suffix or operands invalid for `%s'"), | |
2246 | current_templates->start->name); | |
2247 | return 0; | |
2248 | } | |
252b5132 | 2249 | |
29b0f896 AM |
2250 | if (!quiet_warnings) |
2251 | { | |
2252 | if (!intel_syntax | |
2253 | && ((i.types[0] & JumpAbsolute) | |
2254 | != (t->operand_types[0] & JumpAbsolute))) | |
2255 | { | |
2256 | as_warn (_("indirect %s without `*'"), t->name); | |
2257 | } | |
2258 | ||
2259 | if ((t->opcode_modifier & (IsPrefix | IgnoreSize)) | |
2260 | == (IsPrefix | IgnoreSize)) | |
2261 | { | |
2262 | /* Warn them that a data or address size prefix doesn't | |
2263 | affect assembly of the next line of code. */ | |
2264 | as_warn (_("stand-alone `%s' prefix"), t->name); | |
2265 | } | |
2266 | } | |
2267 | ||
2268 | /* Copy the template we found. */ | |
2269 | i.tm = *t; | |
2270 | if (found_reverse_match) | |
2271 | { | |
2272 | /* If we found a reverse match we must alter the opcode | |
2273 | direction bit. found_reverse_match holds bits to change | |
2274 | (different for int & float insns). */ | |
2275 | ||
2276 | i.tm.base_opcode ^= found_reverse_match; | |
2277 | ||
2278 | i.tm.operand_types[0] = t->operand_types[1]; | |
2279 | i.tm.operand_types[1] = t->operand_types[0]; | |
2280 | } | |
2281 | ||
2282 | return 1; | |
2283 | } | |
2284 | ||
2285 | static int | |
2286 | check_string () | |
2287 | { | |
2288 | int mem_op = (i.types[0] & AnyMem) ? 0 : 1; | |
2289 | if ((i.tm.operand_types[mem_op] & EsSeg) != 0) | |
2290 | { | |
2291 | if (i.seg[0] != NULL && i.seg[0] != &es) | |
2292 | { | |
2293 | as_bad (_("`%s' operand %d must use `%%es' segment"), | |
2294 | i.tm.name, | |
2295 | mem_op + 1); | |
2296 | return 0; | |
2297 | } | |
2298 | /* There's only ever one segment override allowed per instruction. | |
2299 | This instruction possibly has a legal segment override on the | |
2300 | second operand, so copy the segment to where non-string | |
2301 | instructions store it, allowing common code. */ | |
2302 | i.seg[0] = i.seg[1]; | |
2303 | } | |
2304 | else if ((i.tm.operand_types[mem_op + 1] & EsSeg) != 0) | |
2305 | { | |
2306 | if (i.seg[1] != NULL && i.seg[1] != &es) | |
2307 | { | |
2308 | as_bad (_("`%s' operand %d must use `%%es' segment"), | |
2309 | i.tm.name, | |
2310 | mem_op + 2); | |
2311 | return 0; | |
2312 | } | |
2313 | } | |
2314 | return 1; | |
2315 | } | |
2316 | ||
2317 | static int | |
543613e9 | 2318 | process_suffix (void) |
29b0f896 AM |
2319 | { |
2320 | /* If matched instruction specifies an explicit instruction mnemonic | |
2321 | suffix, use it. */ | |
2322 | if (i.tm.opcode_modifier & (Size16 | Size32 | Size64)) | |
2323 | { | |
2324 | if (i.tm.opcode_modifier & Size16) | |
2325 | i.suffix = WORD_MNEM_SUFFIX; | |
2326 | else if (i.tm.opcode_modifier & Size64) | |
2327 | i.suffix = QWORD_MNEM_SUFFIX; | |
2328 | else | |
2329 | i.suffix = LONG_MNEM_SUFFIX; | |
2330 | } | |
2331 | else if (i.reg_operands) | |
2332 | { | |
2333 | /* If there's no instruction mnemonic suffix we try to invent one | |
2334 | based on register operands. */ | |
2335 | if (!i.suffix) | |
2336 | { | |
2337 | /* We take i.suffix from the last register operand specified, | |
2338 | Destination register type is more significant than source | |
2339 | register type. */ | |
2340 | int op; | |
543613e9 | 2341 | |
29b0f896 AM |
2342 | for (op = i.operands; --op >= 0;) |
2343 | if ((i.types[op] & Reg) | |
2344 | && !(i.tm.operand_types[op] & InOutPortReg)) | |
2345 | { | |
2346 | i.suffix = ((i.types[op] & Reg8) ? BYTE_MNEM_SUFFIX : | |
2347 | (i.types[op] & Reg16) ? WORD_MNEM_SUFFIX : | |
2348 | (i.types[op] & Reg64) ? QWORD_MNEM_SUFFIX : | |
2349 | LONG_MNEM_SUFFIX); | |
2350 | break; | |
2351 | } | |
2352 | } | |
2353 | else if (i.suffix == BYTE_MNEM_SUFFIX) | |
2354 | { | |
2355 | if (!check_byte_reg ()) | |
2356 | return 0; | |
2357 | } | |
2358 | else if (i.suffix == LONG_MNEM_SUFFIX) | |
2359 | { | |
2360 | if (!check_long_reg ()) | |
2361 | return 0; | |
2362 | } | |
2363 | else if (i.suffix == QWORD_MNEM_SUFFIX) | |
2364 | { | |
2365 | if (!check_qword_reg ()) | |
2366 | return 0; | |
2367 | } | |
2368 | else if (i.suffix == WORD_MNEM_SUFFIX) | |
2369 | { | |
2370 | if (!check_word_reg ()) | |
2371 | return 0; | |
2372 | } | |
2373 | else if (intel_syntax && (i.tm.opcode_modifier & IgnoreSize)) | |
2374 | /* Do nothing if the instruction is going to ignore the prefix. */ | |
2375 | ; | |
2376 | else | |
2377 | abort (); | |
2378 | } | |
9306ca4a JB |
2379 | else if ((i.tm.opcode_modifier & DefaultSize) |
2380 | && !i.suffix | |
2381 | /* exclude fldenv/frstor/fsave/fstenv */ | |
2382 | && (i.tm.opcode_modifier & No_sSuf)) | |
29b0f896 AM |
2383 | { |
2384 | i.suffix = stackop_size; | |
2385 | } | |
9306ca4a JB |
2386 | else if (intel_syntax |
2387 | && !i.suffix | |
2388 | && ((i.tm.operand_types[0] & JumpAbsolute) | |
2389 | || (i.tm.opcode_modifier & (JumpByte|JumpInterSegment)) | |
2390 | || (i.tm.base_opcode == 0x0f01 /* [ls][gi]dt */ | |
2391 | && i.tm.extension_opcode <= 3))) | |
2392 | { | |
2393 | switch (flag_code) | |
2394 | { | |
2395 | case CODE_64BIT: | |
2396 | if (!(i.tm.opcode_modifier & No_qSuf)) | |
2397 | { | |
2398 | i.suffix = QWORD_MNEM_SUFFIX; | |
2399 | break; | |
2400 | } | |
2401 | case CODE_32BIT: | |
2402 | if (!(i.tm.opcode_modifier & No_lSuf)) | |
2403 | i.suffix = LONG_MNEM_SUFFIX; | |
2404 | break; | |
2405 | case CODE_16BIT: | |
2406 | if (!(i.tm.opcode_modifier & No_wSuf)) | |
2407 | i.suffix = WORD_MNEM_SUFFIX; | |
2408 | break; | |
2409 | } | |
2410 | } | |
252b5132 | 2411 | |
9306ca4a | 2412 | if (!i.suffix) |
29b0f896 | 2413 | { |
9306ca4a JB |
2414 | if (!intel_syntax) |
2415 | { | |
2416 | if (i.tm.opcode_modifier & W) | |
2417 | { | |
2418 | as_bad (_("no instruction mnemonic suffix given and no register operands; can't size instruction")); | |
2419 | return 0; | |
2420 | } | |
2421 | } | |
2422 | else | |
2423 | { | |
2424 | unsigned int suffixes = ~i.tm.opcode_modifier | |
2425 | & (No_bSuf | |
2426 | | No_wSuf | |
2427 | | No_lSuf | |
2428 | | No_sSuf | |
2429 | | No_xSuf | |
2430 | | No_qSuf); | |
2431 | ||
2432 | if ((i.tm.opcode_modifier & W) | |
2433 | || ((suffixes & (suffixes - 1)) | |
2434 | && !(i.tm.opcode_modifier & (DefaultSize | IgnoreSize)))) | |
2435 | { | |
2436 | as_bad (_("ambiguous operand size for `%s'"), i.tm.name); | |
2437 | return 0; | |
2438 | } | |
2439 | } | |
29b0f896 | 2440 | } |
252b5132 | 2441 | |
9306ca4a JB |
2442 | /* Change the opcode based on the operand size given by i.suffix; |
2443 | We don't need to change things for byte insns. */ | |
2444 | ||
29b0f896 AM |
2445 | if (i.suffix && i.suffix != BYTE_MNEM_SUFFIX) |
2446 | { | |
2447 | /* It's not a byte, select word/dword operation. */ | |
2448 | if (i.tm.opcode_modifier & W) | |
2449 | { | |
2450 | if (i.tm.opcode_modifier & ShortForm) | |
2451 | i.tm.base_opcode |= 8; | |
2452 | else | |
2453 | i.tm.base_opcode |= 1; | |
2454 | } | |
0f3f3d8b | 2455 | |
29b0f896 AM |
2456 | /* Now select between word & dword operations via the operand |
2457 | size prefix, except for instructions that will ignore this | |
2458 | prefix anyway. */ | |
2459 | if (i.suffix != QWORD_MNEM_SUFFIX | |
9306ca4a JB |
2460 | && i.suffix != LONG_DOUBLE_MNEM_SUFFIX |
2461 | && !(i.tm.opcode_modifier & (IgnoreSize | FloatMF)) | |
9146926a AM |
2462 | && ((i.suffix == LONG_MNEM_SUFFIX) == (flag_code == CODE_16BIT) |
2463 | || (flag_code == CODE_64BIT | |
2464 | && (i.tm.opcode_modifier & JumpByte)))) | |
24eab124 AM |
2465 | { |
2466 | unsigned int prefix = DATA_PREFIX_OPCODE; | |
543613e9 | 2467 | |
29b0f896 AM |
2468 | if (i.tm.opcode_modifier & JumpByte) /* jcxz, loop */ |
2469 | prefix = ADDR_PREFIX_OPCODE; | |
252b5132 | 2470 | |
29b0f896 AM |
2471 | if (!add_prefix (prefix)) |
2472 | return 0; | |
24eab124 | 2473 | } |
252b5132 | 2474 | |
29b0f896 AM |
2475 | /* Set mode64 for an operand. */ |
2476 | if (i.suffix == QWORD_MNEM_SUFFIX | |
9146926a | 2477 | && flag_code == CODE_64BIT |
29b0f896 | 2478 | && (i.tm.opcode_modifier & NoRex64) == 0) |
9146926a | 2479 | i.rex |= REX_MODE64; |
3e73aa7c | 2480 | |
29b0f896 AM |
2481 | /* Size floating point instruction. */ |
2482 | if (i.suffix == LONG_MNEM_SUFFIX) | |
543613e9 NC |
2483 | if (i.tm.opcode_modifier & FloatMF) |
2484 | i.tm.base_opcode ^= 4; | |
29b0f896 | 2485 | } |
7ecd2f8b | 2486 | |
29b0f896 AM |
2487 | return 1; |
2488 | } | |
3e73aa7c | 2489 | |
29b0f896 | 2490 | static int |
543613e9 | 2491 | check_byte_reg (void) |
29b0f896 AM |
2492 | { |
2493 | int op; | |
543613e9 | 2494 | |
29b0f896 AM |
2495 | for (op = i.operands; --op >= 0;) |
2496 | { | |
2497 | /* If this is an eight bit register, it's OK. If it's the 16 or | |
2498 | 32 bit version of an eight bit register, we will just use the | |
2499 | low portion, and that's OK too. */ | |
2500 | if (i.types[op] & Reg8) | |
2501 | continue; | |
2502 | ||
2503 | /* movzx and movsx should not generate this warning. */ | |
2504 | if (intel_syntax | |
2505 | && (i.tm.base_opcode == 0xfb7 | |
2506 | || i.tm.base_opcode == 0xfb6 | |
2507 | || i.tm.base_opcode == 0x63 | |
2508 | || i.tm.base_opcode == 0xfbe | |
2509 | || i.tm.base_opcode == 0xfbf)) | |
2510 | continue; | |
2511 | ||
65ec77d2 | 2512 | if ((i.types[op] & WordReg) && i.op[op].regs->reg_num < 4) |
29b0f896 AM |
2513 | { |
2514 | /* Prohibit these changes in the 64bit mode, since the | |
2515 | lowering is more complicated. */ | |
2516 | if (flag_code == CODE_64BIT | |
2517 | && (i.tm.operand_types[op] & InOutPortReg) == 0) | |
2518 | { | |
0f3f3d8b | 2519 | as_bad (_("Incorrect register `%%%s' used with `%c' suffix"), |
29b0f896 AM |
2520 | i.op[op].regs->reg_name, |
2521 | i.suffix); | |
2522 | return 0; | |
2523 | } | |
2524 | #if REGISTER_WARNINGS | |
2525 | if (!quiet_warnings | |
2526 | && (i.tm.operand_types[op] & InOutPortReg) == 0) | |
2527 | as_warn (_("using `%%%s' instead of `%%%s' due to `%c' suffix"), | |
2528 | (i.op[op].regs + (i.types[op] & Reg16 | |
2529 | ? REGNAM_AL - REGNAM_AX | |
2530 | : REGNAM_AL - REGNAM_EAX))->reg_name, | |
2531 | i.op[op].regs->reg_name, | |
2532 | i.suffix); | |
2533 | #endif | |
2534 | continue; | |
2535 | } | |
2536 | /* Any other register is bad. */ | |
2537 | if (i.types[op] & (Reg | RegMMX | RegXMM | |
2538 | | SReg2 | SReg3 | |
2539 | | Control | Debug | Test | |
2540 | | FloatReg | FloatAcc)) | |
2541 | { | |
2542 | as_bad (_("`%%%s' not allowed with `%s%c'"), | |
2543 | i.op[op].regs->reg_name, | |
2544 | i.tm.name, | |
2545 | i.suffix); | |
2546 | return 0; | |
2547 | } | |
2548 | } | |
2549 | return 1; | |
2550 | } | |
2551 | ||
2552 | static int | |
2553 | check_long_reg () | |
2554 | { | |
2555 | int op; | |
2556 | ||
2557 | for (op = i.operands; --op >= 0;) | |
2558 | /* Reject eight bit registers, except where the template requires | |
2559 | them. (eg. movzb) */ | |
2560 | if ((i.types[op] & Reg8) != 0 | |
2561 | && (i.tm.operand_types[op] & (Reg16 | Reg32 | Acc)) != 0) | |
2562 | { | |
2563 | as_bad (_("`%%%s' not allowed with `%s%c'"), | |
2564 | i.op[op].regs->reg_name, | |
2565 | i.tm.name, | |
2566 | i.suffix); | |
2567 | return 0; | |
2568 | } | |
2569 | /* Warn if the e prefix on a general reg is missing. */ | |
2570 | else if ((!quiet_warnings || flag_code == CODE_64BIT) | |
2571 | && (i.types[op] & Reg16) != 0 | |
2572 | && (i.tm.operand_types[op] & (Reg32 | Acc)) != 0) | |
2573 | { | |
2574 | /* Prohibit these changes in the 64bit mode, since the | |
2575 | lowering is more complicated. */ | |
2576 | if (flag_code == CODE_64BIT) | |
252b5132 | 2577 | { |
0f3f3d8b | 2578 | as_bad (_("Incorrect register `%%%s' used with `%c' suffix"), |
29b0f896 AM |
2579 | i.op[op].regs->reg_name, |
2580 | i.suffix); | |
2581 | return 0; | |
252b5132 | 2582 | } |
29b0f896 AM |
2583 | #if REGISTER_WARNINGS |
2584 | else | |
2585 | as_warn (_("using `%%%s' instead of `%%%s' due to `%c' suffix"), | |
2586 | (i.op[op].regs + REGNAM_EAX - REGNAM_AX)->reg_name, | |
2587 | i.op[op].regs->reg_name, | |
2588 | i.suffix); | |
2589 | #endif | |
252b5132 | 2590 | } |
29b0f896 AM |
2591 | /* Warn if the r prefix on a general reg is missing. */ |
2592 | else if ((i.types[op] & Reg64) != 0 | |
2593 | && (i.tm.operand_types[op] & (Reg32 | Acc)) != 0) | |
252b5132 | 2594 | { |
0f3f3d8b | 2595 | as_bad (_("Incorrect register `%%%s' used with `%c' suffix"), |
29b0f896 AM |
2596 | i.op[op].regs->reg_name, |
2597 | i.suffix); | |
2598 | return 0; | |
2599 | } | |
2600 | return 1; | |
2601 | } | |
252b5132 | 2602 | |
29b0f896 AM |
2603 | static int |
2604 | check_qword_reg () | |
2605 | { | |
2606 | int op; | |
252b5132 | 2607 | |
29b0f896 AM |
2608 | for (op = i.operands; --op >= 0; ) |
2609 | /* Reject eight bit registers, except where the template requires | |
2610 | them. (eg. movzb) */ | |
2611 | if ((i.types[op] & Reg8) != 0 | |
2612 | && (i.tm.operand_types[op] & (Reg16 | Reg32 | Acc)) != 0) | |
2613 | { | |
2614 | as_bad (_("`%%%s' not allowed with `%s%c'"), | |
2615 | i.op[op].regs->reg_name, | |
2616 | i.tm.name, | |
2617 | i.suffix); | |
2618 | return 0; | |
2619 | } | |
2620 | /* Warn if the e prefix on a general reg is missing. */ | |
2621 | else if (((i.types[op] & Reg16) != 0 | |
2622 | || (i.types[op] & Reg32) != 0) | |
2623 | && (i.tm.operand_types[op] & (Reg32 | Acc)) != 0) | |
2624 | { | |
2625 | /* Prohibit these changes in the 64bit mode, since the | |
2626 | lowering is more complicated. */ | |
0f3f3d8b | 2627 | as_bad (_("Incorrect register `%%%s' used with `%c' suffix"), |
29b0f896 AM |
2628 | i.op[op].regs->reg_name, |
2629 | i.suffix); | |
2630 | return 0; | |
252b5132 | 2631 | } |
29b0f896 AM |
2632 | return 1; |
2633 | } | |
252b5132 | 2634 | |
29b0f896 AM |
2635 | static int |
2636 | check_word_reg () | |
2637 | { | |
2638 | int op; | |
2639 | for (op = i.operands; --op >= 0;) | |
2640 | /* Reject eight bit registers, except where the template requires | |
2641 | them. (eg. movzb) */ | |
2642 | if ((i.types[op] & Reg8) != 0 | |
2643 | && (i.tm.operand_types[op] & (Reg16 | Reg32 | Acc)) != 0) | |
2644 | { | |
2645 | as_bad (_("`%%%s' not allowed with `%s%c'"), | |
2646 | i.op[op].regs->reg_name, | |
2647 | i.tm.name, | |
2648 | i.suffix); | |
2649 | return 0; | |
2650 | } | |
2651 | /* Warn if the e prefix on a general reg is present. */ | |
2652 | else if ((!quiet_warnings || flag_code == CODE_64BIT) | |
2653 | && (i.types[op] & Reg32) != 0 | |
2654 | && (i.tm.operand_types[op] & (Reg16 | Acc)) != 0) | |
252b5132 | 2655 | { |
29b0f896 AM |
2656 | /* Prohibit these changes in the 64bit mode, since the |
2657 | lowering is more complicated. */ | |
2658 | if (flag_code == CODE_64BIT) | |
252b5132 | 2659 | { |
0f3f3d8b | 2660 | as_bad (_("Incorrect register `%%%s' used with `%c' suffix"), |
29b0f896 AM |
2661 | i.op[op].regs->reg_name, |
2662 | i.suffix); | |
2663 | return 0; | |
252b5132 | 2664 | } |
29b0f896 AM |
2665 | else |
2666 | #if REGISTER_WARNINGS | |
2667 | as_warn (_("using `%%%s' instead of `%%%s' due to `%c' suffix"), | |
2668 | (i.op[op].regs + REGNAM_AX - REGNAM_EAX)->reg_name, | |
2669 | i.op[op].regs->reg_name, | |
2670 | i.suffix); | |
2671 | #endif | |
2672 | } | |
2673 | return 1; | |
2674 | } | |
252b5132 | 2675 | |
29b0f896 AM |
2676 | static int |
2677 | finalize_imm () | |
2678 | { | |
2679 | unsigned int overlap0, overlap1, overlap2; | |
2680 | ||
2681 | overlap0 = i.types[0] & i.tm.operand_types[0]; | |
20f0a1fc | 2682 | if ((overlap0 & (Imm8 | Imm8S | Imm16 | Imm32 | Imm32S | Imm64)) |
29b0f896 AM |
2683 | && overlap0 != Imm8 && overlap0 != Imm8S |
2684 | && overlap0 != Imm16 && overlap0 != Imm32S | |
2685 | && overlap0 != Imm32 && overlap0 != Imm64) | |
2686 | { | |
2687 | if (i.suffix) | |
2688 | { | |
2689 | overlap0 &= (i.suffix == BYTE_MNEM_SUFFIX | |
2690 | ? Imm8 | Imm8S | |
2691 | : (i.suffix == WORD_MNEM_SUFFIX | |
2692 | ? Imm16 | |
2693 | : (i.suffix == QWORD_MNEM_SUFFIX | |
2694 | ? Imm64 | Imm32S | |
2695 | : Imm32))); | |
2696 | } | |
2697 | else if (overlap0 == (Imm16 | Imm32S | Imm32) | |
2698 | || overlap0 == (Imm16 | Imm32) | |
2699 | || overlap0 == (Imm16 | Imm32S)) | |
2700 | { | |
2701 | overlap0 = ((flag_code == CODE_16BIT) ^ (i.prefix[DATA_PREFIX] != 0) | |
2702 | ? Imm16 : Imm32S); | |
2703 | } | |
2704 | if (overlap0 != Imm8 && overlap0 != Imm8S | |
2705 | && overlap0 != Imm16 && overlap0 != Imm32S | |
2706 | && overlap0 != Imm32 && overlap0 != Imm64) | |
2707 | { | |
2708 | as_bad (_("no instruction mnemonic suffix given; can't determine immediate size")); | |
2709 | return 0; | |
2710 | } | |
2711 | } | |
2712 | i.types[0] = overlap0; | |
2713 | ||
2714 | overlap1 = i.types[1] & i.tm.operand_types[1]; | |
37edbb65 | 2715 | if ((overlap1 & (Imm8 | Imm8S | Imm16 | Imm32S | Imm32 | Imm64)) |
29b0f896 AM |
2716 | && overlap1 != Imm8 && overlap1 != Imm8S |
2717 | && overlap1 != Imm16 && overlap1 != Imm32S | |
2718 | && overlap1 != Imm32 && overlap1 != Imm64) | |
2719 | { | |
2720 | if (i.suffix) | |
2721 | { | |
2722 | overlap1 &= (i.suffix == BYTE_MNEM_SUFFIX | |
2723 | ? Imm8 | Imm8S | |
2724 | : (i.suffix == WORD_MNEM_SUFFIX | |
2725 | ? Imm16 | |
2726 | : (i.suffix == QWORD_MNEM_SUFFIX | |
2727 | ? Imm64 | Imm32S | |
2728 | : Imm32))); | |
2729 | } | |
2730 | else if (overlap1 == (Imm16 | Imm32 | Imm32S) | |
2731 | || overlap1 == (Imm16 | Imm32) | |
2732 | || overlap1 == (Imm16 | Imm32S)) | |
2733 | { | |
2734 | overlap1 = ((flag_code == CODE_16BIT) ^ (i.prefix[DATA_PREFIX] != 0) | |
2735 | ? Imm16 : Imm32S); | |
2736 | } | |
2737 | if (overlap1 != Imm8 && overlap1 != Imm8S | |
2738 | && overlap1 != Imm16 && overlap1 != Imm32S | |
2739 | && overlap1 != Imm32 && overlap1 != Imm64) | |
2740 | { | |
2741 | as_bad (_("no instruction mnemonic suffix given; can't determine immediate size %x %c"),overlap1, i.suffix); | |
2742 | return 0; | |
2743 | } | |
2744 | } | |
2745 | i.types[1] = overlap1; | |
2746 | ||
2747 | overlap2 = i.types[2] & i.tm.operand_types[2]; | |
2748 | assert ((overlap2 & Imm) == 0); | |
2749 | i.types[2] = overlap2; | |
2750 | ||
2751 | return 1; | |
2752 | } | |
2753 | ||
2754 | static int | |
2755 | process_operands () | |
2756 | { | |
2757 | /* Default segment register this instruction will use for memory | |
2758 | accesses. 0 means unknown. This is only for optimizing out | |
2759 | unnecessary segment overrides. */ | |
2760 | const seg_entry *default_seg = 0; | |
2761 | ||
2762 | /* The imul $imm, %reg instruction is converted into | |
2763 | imul $imm, %reg, %reg, and the clr %reg instruction | |
2764 | is converted into xor %reg, %reg. */ | |
2765 | if (i.tm.opcode_modifier & regKludge) | |
2766 | { | |
2767 | unsigned int first_reg_op = (i.types[0] & Reg) ? 0 : 1; | |
2768 | /* Pretend we saw the extra register operand. */ | |
2769 | assert (i.op[first_reg_op + 1].regs == 0); | |
2770 | i.op[first_reg_op + 1].regs = i.op[first_reg_op].regs; | |
2771 | i.types[first_reg_op + 1] = i.types[first_reg_op]; | |
2772 | i.reg_operands = 2; | |
2773 | } | |
2774 | ||
2775 | if (i.tm.opcode_modifier & ShortForm) | |
2776 | { | |
2777 | /* The register or float register operand is in operand 0 or 1. */ | |
2778 | unsigned int op = (i.types[0] & (Reg | FloatReg)) ? 0 : 1; | |
2779 | /* Register goes in low 3 bits of opcode. */ | |
2780 | i.tm.base_opcode |= i.op[op].regs->reg_num; | |
2781 | if ((i.op[op].regs->reg_flags & RegRex) != 0) | |
2782 | i.rex |= REX_EXTZ; | |
2783 | if (!quiet_warnings && (i.tm.opcode_modifier & Ugh) != 0) | |
2784 | { | |
2785 | /* Warn about some common errors, but press on regardless. | |
2786 | The first case can be generated by gcc (<= 2.8.1). */ | |
2787 | if (i.operands == 2) | |
2788 | { | |
2789 | /* Reversed arguments on faddp, fsubp, etc. */ | |
2790 | as_warn (_("translating to `%s %%%s,%%%s'"), i.tm.name, | |
2791 | i.op[1].regs->reg_name, | |
2792 | i.op[0].regs->reg_name); | |
2793 | } | |
2794 | else | |
2795 | { | |
2796 | /* Extraneous `l' suffix on fp insn. */ | |
2797 | as_warn (_("translating to `%s %%%s'"), i.tm.name, | |
2798 | i.op[0].regs->reg_name); | |
2799 | } | |
2800 | } | |
2801 | } | |
2802 | else if (i.tm.opcode_modifier & Modrm) | |
2803 | { | |
2804 | /* The opcode is completed (modulo i.tm.extension_opcode which | |
52271982 AM |
2805 | must be put into the modrm byte). Now, we make the modrm and |
2806 | index base bytes based on all the info we've collected. */ | |
29b0f896 AM |
2807 | |
2808 | default_seg = build_modrm_byte (); | |
2809 | } | |
2810 | else if (i.tm.opcode_modifier & (Seg2ShortForm | Seg3ShortForm)) | |
2811 | { | |
2812 | if (i.tm.base_opcode == POP_SEG_SHORT | |
2813 | && i.op[0].regs->reg_num == 1) | |
2814 | { | |
2815 | as_bad (_("you can't `pop %%cs'")); | |
2816 | return 0; | |
2817 | } | |
2818 | i.tm.base_opcode |= (i.op[0].regs->reg_num << 3); | |
2819 | if ((i.op[0].regs->reg_flags & RegRex) != 0) | |
2820 | i.rex |= REX_EXTZ; | |
2821 | } | |
2822 | else if ((i.tm.base_opcode & ~(D | W)) == MOV_AX_DISP32) | |
2823 | { | |
2824 | default_seg = &ds; | |
2825 | } | |
2826 | else if ((i.tm.opcode_modifier & IsString) != 0) | |
2827 | { | |
2828 | /* For the string instructions that allow a segment override | |
2829 | on one of their operands, the default segment is ds. */ | |
2830 | default_seg = &ds; | |
2831 | } | |
2832 | ||
52271982 AM |
2833 | if (i.tm.base_opcode == 0x8d /* lea */ && i.seg[0] && !quiet_warnings) |
2834 | as_warn (_("segment override on `lea' is ineffectual")); | |
2835 | ||
2836 | /* If a segment was explicitly specified, and the specified segment | |
2837 | is not the default, use an opcode prefix to select it. If we | |
2838 | never figured out what the default segment is, then default_seg | |
2839 | will be zero at this point, and the specified segment prefix will | |
2840 | always be used. */ | |
29b0f896 AM |
2841 | if ((i.seg[0]) && (i.seg[0] != default_seg)) |
2842 | { | |
2843 | if (!add_prefix (i.seg[0]->seg_prefix)) | |
2844 | return 0; | |
2845 | } | |
2846 | return 1; | |
2847 | } | |
2848 | ||
2849 | static const seg_entry * | |
2850 | build_modrm_byte () | |
2851 | { | |
2852 | const seg_entry *default_seg = 0; | |
2853 | ||
2854 | /* i.reg_operands MUST be the number of real register operands; | |
2855 | implicit registers do not count. */ | |
2856 | if (i.reg_operands == 2) | |
2857 | { | |
2858 | unsigned int source, dest; | |
2859 | source = ((i.types[0] | |
2860 | & (Reg | RegMMX | RegXMM | |
2861 | | SReg2 | SReg3 | |
2862 | | Control | Debug | Test)) | |
2863 | ? 0 : 1); | |
2864 | dest = source + 1; | |
2865 | ||
2866 | i.rm.mode = 3; | |
2867 | /* One of the register operands will be encoded in the i.tm.reg | |
2868 | field, the other in the combined i.tm.mode and i.tm.regmem | |
2869 | fields. If no form of this instruction supports a memory | |
2870 | destination operand, then we assume the source operand may | |
2871 | sometimes be a memory operand and so we need to store the | |
2872 | destination in the i.rm.reg field. */ | |
2873 | if ((i.tm.operand_types[dest] & AnyMem) == 0) | |
2874 | { | |
2875 | i.rm.reg = i.op[dest].regs->reg_num; | |
2876 | i.rm.regmem = i.op[source].regs->reg_num; | |
2877 | if ((i.op[dest].regs->reg_flags & RegRex) != 0) | |
2878 | i.rex |= REX_EXTX; | |
2879 | if ((i.op[source].regs->reg_flags & RegRex) != 0) | |
2880 | i.rex |= REX_EXTZ; | |
2881 | } | |
2882 | else | |
2883 | { | |
2884 | i.rm.reg = i.op[source].regs->reg_num; | |
2885 | i.rm.regmem = i.op[dest].regs->reg_num; | |
2886 | if ((i.op[dest].regs->reg_flags & RegRex) != 0) | |
2887 | i.rex |= REX_EXTZ; | |
2888 | if ((i.op[source].regs->reg_flags & RegRex) != 0) | |
2889 | i.rex |= REX_EXTX; | |
2890 | } | |
c4a530c5 JB |
2891 | if (flag_code != CODE_64BIT && (i.rex & (REX_EXTX | REX_EXTZ))) |
2892 | { | |
2893 | if (!((i.types[0] | i.types[1]) & Control)) | |
2894 | abort (); | |
2895 | i.rex &= ~(REX_EXTX | REX_EXTZ); | |
2896 | add_prefix (LOCK_PREFIX_OPCODE); | |
2897 | } | |
29b0f896 AM |
2898 | } |
2899 | else | |
2900 | { /* If it's not 2 reg operands... */ | |
2901 | if (i.mem_operands) | |
2902 | { | |
2903 | unsigned int fake_zero_displacement = 0; | |
2904 | unsigned int op = ((i.types[0] & AnyMem) | |
2905 | ? 0 | |
2906 | : (i.types[1] & AnyMem) ? 1 : 2); | |
2907 | ||
2908 | default_seg = &ds; | |
2909 | ||
2910 | if (i.base_reg == 0) | |
2911 | { | |
2912 | i.rm.mode = 0; | |
2913 | if (!i.disp_operands) | |
2914 | fake_zero_displacement = 1; | |
2915 | if (i.index_reg == 0) | |
2916 | { | |
2917 | /* Operand is just <disp> */ | |
20f0a1fc | 2918 | if (flag_code == CODE_64BIT) |
29b0f896 AM |
2919 | { |
2920 | /* 64bit mode overwrites the 32bit absolute | |
2921 | addressing by RIP relative addressing and | |
2922 | absolute addressing is encoded by one of the | |
2923 | redundant SIB forms. */ | |
2924 | i.rm.regmem = ESCAPE_TO_TWO_BYTE_ADDRESSING; | |
2925 | i.sib.base = NO_BASE_REGISTER; | |
2926 | i.sib.index = NO_INDEX_REGISTER; | |
20f0a1fc NC |
2927 | i.types[op] = ((i.prefix[ADDR_PREFIX] == 0) ? Disp32S : Disp32); |
2928 | } | |
2929 | else if ((flag_code == CODE_16BIT) ^ (i.prefix[ADDR_PREFIX] != 0)) | |
2930 | { | |
2931 | i.rm.regmem = NO_BASE_REGISTER_16; | |
2932 | i.types[op] = Disp16; | |
2933 | } | |
2934 | else | |
2935 | { | |
2936 | i.rm.regmem = NO_BASE_REGISTER; | |
2937 | i.types[op] = Disp32; | |
29b0f896 AM |
2938 | } |
2939 | } | |
2940 | else /* !i.base_reg && i.index_reg */ | |
2941 | { | |
2942 | i.sib.index = i.index_reg->reg_num; | |
2943 | i.sib.base = NO_BASE_REGISTER; | |
2944 | i.sib.scale = i.log2_scale_factor; | |
2945 | i.rm.regmem = ESCAPE_TO_TWO_BYTE_ADDRESSING; | |
2946 | i.types[op] &= ~Disp; | |
2947 | if (flag_code != CODE_64BIT) | |
2948 | i.types[op] |= Disp32; /* Must be 32 bit */ | |
2949 | else | |
2950 | i.types[op] |= Disp32S; | |
2951 | if ((i.index_reg->reg_flags & RegRex) != 0) | |
2952 | i.rex |= REX_EXTY; | |
2953 | } | |
2954 | } | |
2955 | /* RIP addressing for 64bit mode. */ | |
2956 | else if (i.base_reg->reg_type == BaseIndex) | |
2957 | { | |
2958 | i.rm.regmem = NO_BASE_REGISTER; | |
20f0a1fc | 2959 | i.types[op] &= ~ Disp; |
29b0f896 AM |
2960 | i.types[op] |= Disp32S; |
2961 | i.flags[op] = Operand_PCrel; | |
20f0a1fc NC |
2962 | if (! i.disp_operands) |
2963 | fake_zero_displacement = 1; | |
29b0f896 AM |
2964 | } |
2965 | else if (i.base_reg->reg_type & Reg16) | |
2966 | { | |
2967 | switch (i.base_reg->reg_num) | |
2968 | { | |
2969 | case 3: /* (%bx) */ | |
2970 | if (i.index_reg == 0) | |
2971 | i.rm.regmem = 7; | |
2972 | else /* (%bx,%si) -> 0, or (%bx,%di) -> 1 */ | |
2973 | i.rm.regmem = i.index_reg->reg_num - 6; | |
2974 | break; | |
2975 | case 5: /* (%bp) */ | |
2976 | default_seg = &ss; | |
2977 | if (i.index_reg == 0) | |
2978 | { | |
2979 | i.rm.regmem = 6; | |
2980 | if ((i.types[op] & Disp) == 0) | |
2981 | { | |
2982 | /* fake (%bp) into 0(%bp) */ | |
2983 | i.types[op] |= Disp8; | |
252b5132 | 2984 | fake_zero_displacement = 1; |
29b0f896 AM |
2985 | } |
2986 | } | |
2987 | else /* (%bp,%si) -> 2, or (%bp,%di) -> 3 */ | |
2988 | i.rm.regmem = i.index_reg->reg_num - 6 + 2; | |
2989 | break; | |
2990 | default: /* (%si) -> 4 or (%di) -> 5 */ | |
2991 | i.rm.regmem = i.base_reg->reg_num - 6 + 4; | |
2992 | } | |
2993 | i.rm.mode = mode_from_disp_size (i.types[op]); | |
2994 | } | |
2995 | else /* i.base_reg and 32/64 bit mode */ | |
2996 | { | |
2997 | if (flag_code == CODE_64BIT | |
2998 | && (i.types[op] & Disp)) | |
20f0a1fc NC |
2999 | i.types[op] = (i.types[op] & Disp8) | (i.prefix[ADDR_PREFIX] == 0 ? Disp32S : Disp32); |
3000 | ||
29b0f896 AM |
3001 | i.rm.regmem = i.base_reg->reg_num; |
3002 | if ((i.base_reg->reg_flags & RegRex) != 0) | |
3003 | i.rex |= REX_EXTZ; | |
3004 | i.sib.base = i.base_reg->reg_num; | |
3005 | /* x86-64 ignores REX prefix bit here to avoid decoder | |
3006 | complications. */ | |
3007 | if ((i.base_reg->reg_num & 7) == EBP_REG_NUM) | |
3008 | { | |
3009 | default_seg = &ss; | |
3010 | if (i.disp_operands == 0) | |
3011 | { | |
3012 | fake_zero_displacement = 1; | |
3013 | i.types[op] |= Disp8; | |
3014 | } | |
3015 | } | |
3016 | else if (i.base_reg->reg_num == ESP_REG_NUM) | |
3017 | { | |
3018 | default_seg = &ss; | |
3019 | } | |
3020 | i.sib.scale = i.log2_scale_factor; | |
3021 | if (i.index_reg == 0) | |
3022 | { | |
3023 | /* <disp>(%esp) becomes two byte modrm with no index | |
3024 | register. We've already stored the code for esp | |
3025 | in i.rm.regmem ie. ESCAPE_TO_TWO_BYTE_ADDRESSING. | |
3026 | Any base register besides %esp will not use the | |
3027 | extra modrm byte. */ | |
3028 | i.sib.index = NO_INDEX_REGISTER; | |
3029 | #if !SCALE1_WHEN_NO_INDEX | |
3030 | /* Another case where we force the second modrm byte. */ | |
3031 | if (i.log2_scale_factor) | |
3032 | i.rm.regmem = ESCAPE_TO_TWO_BYTE_ADDRESSING; | |
252b5132 | 3033 | #endif |
29b0f896 AM |
3034 | } |
3035 | else | |
3036 | { | |
3037 | i.sib.index = i.index_reg->reg_num; | |
3038 | i.rm.regmem = ESCAPE_TO_TWO_BYTE_ADDRESSING; | |
3039 | if ((i.index_reg->reg_flags & RegRex) != 0) | |
3040 | i.rex |= REX_EXTY; | |
3041 | } | |
3042 | i.rm.mode = mode_from_disp_size (i.types[op]); | |
3043 | } | |
252b5132 | 3044 | |
29b0f896 AM |
3045 | if (fake_zero_displacement) |
3046 | { | |
3047 | /* Fakes a zero displacement assuming that i.types[op] | |
3048 | holds the correct displacement size. */ | |
3049 | expressionS *exp; | |
3050 | ||
3051 | assert (i.op[op].disps == 0); | |
3052 | exp = &disp_expressions[i.disp_operands++]; | |
3053 | i.op[op].disps = exp; | |
3054 | exp->X_op = O_constant; | |
3055 | exp->X_add_number = 0; | |
3056 | exp->X_add_symbol = (symbolS *) 0; | |
3057 | exp->X_op_symbol = (symbolS *) 0; | |
3058 | } | |
3059 | } | |
252b5132 | 3060 | |
29b0f896 AM |
3061 | /* Fill in i.rm.reg or i.rm.regmem field with register operand |
3062 | (if any) based on i.tm.extension_opcode. Again, we must be | |
3063 | careful to make sure that segment/control/debug/test/MMX | |
3064 | registers are coded into the i.rm.reg field. */ | |
3065 | if (i.reg_operands) | |
3066 | { | |
3067 | unsigned int op = | |
3068 | ((i.types[0] | |
3069 | & (Reg | RegMMX | RegXMM | |
3070 | | SReg2 | SReg3 | |
3071 | | Control | Debug | Test)) | |
3072 | ? 0 | |
3073 | : ((i.types[1] | |
3074 | & (Reg | RegMMX | RegXMM | |
3075 | | SReg2 | SReg3 | |
3076 | | Control | Debug | Test)) | |
3077 | ? 1 | |
3078 | : 2)); | |
3079 | /* If there is an extension opcode to put here, the register | |
3080 | number must be put into the regmem field. */ | |
3081 | if (i.tm.extension_opcode != None) | |
3082 | { | |
3083 | i.rm.regmem = i.op[op].regs->reg_num; | |
3084 | if ((i.op[op].regs->reg_flags & RegRex) != 0) | |
3085 | i.rex |= REX_EXTZ; | |
3086 | } | |
3087 | else | |
3088 | { | |
3089 | i.rm.reg = i.op[op].regs->reg_num; | |
3090 | if ((i.op[op].regs->reg_flags & RegRex) != 0) | |
3091 | i.rex |= REX_EXTX; | |
3092 | } | |
252b5132 | 3093 | |
29b0f896 AM |
3094 | /* Now, if no memory operand has set i.rm.mode = 0, 1, 2 we |
3095 | must set it to 3 to indicate this is a register operand | |
3096 | in the regmem field. */ | |
3097 | if (!i.mem_operands) | |
3098 | i.rm.mode = 3; | |
3099 | } | |
252b5132 | 3100 | |
29b0f896 AM |
3101 | /* Fill in i.rm.reg field with extension opcode (if any). */ |
3102 | if (i.tm.extension_opcode != None) | |
3103 | i.rm.reg = i.tm.extension_opcode; | |
3104 | } | |
3105 | return default_seg; | |
3106 | } | |
252b5132 | 3107 | |
29b0f896 AM |
3108 | static void |
3109 | output_branch () | |
3110 | { | |
3111 | char *p; | |
3112 | int code16; | |
3113 | int prefix; | |
3114 | relax_substateT subtype; | |
3115 | symbolS *sym; | |
3116 | offsetT off; | |
3117 | ||
3118 | code16 = 0; | |
3119 | if (flag_code == CODE_16BIT) | |
3120 | code16 = CODE16; | |
3121 | ||
3122 | prefix = 0; | |
3123 | if (i.prefix[DATA_PREFIX] != 0) | |
252b5132 | 3124 | { |
29b0f896 AM |
3125 | prefix = 1; |
3126 | i.prefixes -= 1; | |
3127 | code16 ^= CODE16; | |
252b5132 | 3128 | } |
29b0f896 AM |
3129 | /* Pentium4 branch hints. */ |
3130 | if (i.prefix[SEG_PREFIX] == CS_PREFIX_OPCODE /* not taken */ | |
3131 | || i.prefix[SEG_PREFIX] == DS_PREFIX_OPCODE /* taken */) | |
2f66722d | 3132 | { |
29b0f896 AM |
3133 | prefix++; |
3134 | i.prefixes--; | |
3135 | } | |
3136 | if (i.prefix[REX_PREFIX] != 0) | |
3137 | { | |
3138 | prefix++; | |
3139 | i.prefixes--; | |
2f66722d AM |
3140 | } |
3141 | ||
29b0f896 AM |
3142 | if (i.prefixes != 0 && !intel_syntax) |
3143 | as_warn (_("skipping prefixes on this instruction")); | |
3144 | ||
3145 | /* It's always a symbol; End frag & setup for relax. | |
3146 | Make sure there is enough room in this frag for the largest | |
3147 | instruction we may generate in md_convert_frag. This is 2 | |
3148 | bytes for the opcode and room for the prefix and largest | |
3149 | displacement. */ | |
3150 | frag_grow (prefix + 2 + 4); | |
3151 | /* Prefix and 1 opcode byte go in fr_fix. */ | |
3152 | p = frag_more (prefix + 1); | |
3153 | if (i.prefix[DATA_PREFIX] != 0) | |
3154 | *p++ = DATA_PREFIX_OPCODE; | |
3155 | if (i.prefix[SEG_PREFIX] == CS_PREFIX_OPCODE | |
3156 | || i.prefix[SEG_PREFIX] == DS_PREFIX_OPCODE) | |
3157 | *p++ = i.prefix[SEG_PREFIX]; | |
3158 | if (i.prefix[REX_PREFIX] != 0) | |
3159 | *p++ = i.prefix[REX_PREFIX]; | |
3160 | *p = i.tm.base_opcode; | |
3161 | ||
3162 | if ((unsigned char) *p == JUMP_PC_RELATIVE) | |
3163 | subtype = ENCODE_RELAX_STATE (UNCOND_JUMP, SMALL); | |
3164 | else if ((cpu_arch_flags & Cpu386) != 0) | |
3165 | subtype = ENCODE_RELAX_STATE (COND_JUMP, SMALL); | |
3166 | else | |
3167 | subtype = ENCODE_RELAX_STATE (COND_JUMP86, SMALL); | |
3168 | subtype |= code16; | |
3e73aa7c | 3169 | |
29b0f896 AM |
3170 | sym = i.op[0].disps->X_add_symbol; |
3171 | off = i.op[0].disps->X_add_number; | |
3e73aa7c | 3172 | |
29b0f896 AM |
3173 | if (i.op[0].disps->X_op != O_constant |
3174 | && i.op[0].disps->X_op != O_symbol) | |
3e73aa7c | 3175 | { |
29b0f896 AM |
3176 | /* Handle complex expressions. */ |
3177 | sym = make_expr_symbol (i.op[0].disps); | |
3178 | off = 0; | |
3179 | } | |
3e73aa7c | 3180 | |
29b0f896 AM |
3181 | /* 1 possible extra opcode + 4 byte displacement go in var part. |
3182 | Pass reloc in fr_var. */ | |
3183 | frag_var (rs_machine_dependent, 5, i.reloc[0], subtype, sym, off, p); | |
3184 | } | |
3e73aa7c | 3185 | |
29b0f896 AM |
3186 | static void |
3187 | output_jump () | |
3188 | { | |
3189 | char *p; | |
3190 | int size; | |
3e02c1cc | 3191 | fixS *fixP; |
29b0f896 AM |
3192 | |
3193 | if (i.tm.opcode_modifier & JumpByte) | |
3194 | { | |
3195 | /* This is a loop or jecxz type instruction. */ | |
3196 | size = 1; | |
3197 | if (i.prefix[ADDR_PREFIX] != 0) | |
3198 | { | |
3199 | FRAG_APPEND_1_CHAR (ADDR_PREFIX_OPCODE); | |
3200 | i.prefixes -= 1; | |
3201 | } | |
3202 | /* Pentium4 branch hints. */ | |
3203 | if (i.prefix[SEG_PREFIX] == CS_PREFIX_OPCODE /* not taken */ | |
3204 | || i.prefix[SEG_PREFIX] == DS_PREFIX_OPCODE /* taken */) | |
3205 | { | |
3206 | FRAG_APPEND_1_CHAR (i.prefix[SEG_PREFIX]); | |
3207 | i.prefixes--; | |
3e73aa7c JH |
3208 | } |
3209 | } | |
29b0f896 AM |
3210 | else |
3211 | { | |
3212 | int code16; | |
3e73aa7c | 3213 | |
29b0f896 AM |
3214 | code16 = 0; |
3215 | if (flag_code == CODE_16BIT) | |
3216 | code16 = CODE16; | |
3e73aa7c | 3217 | |
29b0f896 AM |
3218 | if (i.prefix[DATA_PREFIX] != 0) |
3219 | { | |
3220 | FRAG_APPEND_1_CHAR (DATA_PREFIX_OPCODE); | |
3221 | i.prefixes -= 1; | |
3222 | code16 ^= CODE16; | |
3223 | } | |
252b5132 | 3224 | |
29b0f896 AM |
3225 | size = 4; |
3226 | if (code16) | |
3227 | size = 2; | |
3228 | } | |
9fcc94b6 | 3229 | |
29b0f896 AM |
3230 | if (i.prefix[REX_PREFIX] != 0) |
3231 | { | |
3232 | FRAG_APPEND_1_CHAR (i.prefix[REX_PREFIX]); | |
3233 | i.prefixes -= 1; | |
3234 | } | |
252b5132 | 3235 | |
29b0f896 AM |
3236 | if (i.prefixes != 0 && !intel_syntax) |
3237 | as_warn (_("skipping prefixes on this instruction")); | |
e0890092 | 3238 | |
29b0f896 AM |
3239 | p = frag_more (1 + size); |
3240 | *p++ = i.tm.base_opcode; | |
e0890092 | 3241 | |
3e02c1cc AM |
3242 | fixP = fix_new_exp (frag_now, p - frag_now->fr_literal, size, |
3243 | i.op[0].disps, 1, reloc (size, 1, 1, i.reloc[0])); | |
3244 | ||
3245 | /* All jumps handled here are signed, but don't use a signed limit | |
3246 | check for 32 and 16 bit jumps as we want to allow wrap around at | |
3247 | 4G and 64k respectively. */ | |
3248 | if (size == 1) | |
3249 | fixP->fx_signed = 1; | |
29b0f896 | 3250 | } |
e0890092 | 3251 | |
29b0f896 AM |
3252 | static void |
3253 | output_interseg_jump () | |
3254 | { | |
3255 | char *p; | |
3256 | int size; | |
3257 | int prefix; | |
3258 | int code16; | |
252b5132 | 3259 | |
29b0f896 AM |
3260 | code16 = 0; |
3261 | if (flag_code == CODE_16BIT) | |
3262 | code16 = CODE16; | |
a217f122 | 3263 | |
29b0f896 AM |
3264 | prefix = 0; |
3265 | if (i.prefix[DATA_PREFIX] != 0) | |
3266 | { | |
3267 | prefix = 1; | |
3268 | i.prefixes -= 1; | |
3269 | code16 ^= CODE16; | |
3270 | } | |
3271 | if (i.prefix[REX_PREFIX] != 0) | |
3272 | { | |
3273 | prefix++; | |
3274 | i.prefixes -= 1; | |
3275 | } | |
252b5132 | 3276 | |
29b0f896 AM |
3277 | size = 4; |
3278 | if (code16) | |
3279 | size = 2; | |
252b5132 | 3280 | |
29b0f896 AM |
3281 | if (i.prefixes != 0 && !intel_syntax) |
3282 | as_warn (_("skipping prefixes on this instruction")); | |
252b5132 | 3283 | |
29b0f896 AM |
3284 | /* 1 opcode; 2 segment; offset */ |
3285 | p = frag_more (prefix + 1 + 2 + size); | |
3e73aa7c | 3286 | |
29b0f896 AM |
3287 | if (i.prefix[DATA_PREFIX] != 0) |
3288 | *p++ = DATA_PREFIX_OPCODE; | |
252b5132 | 3289 | |
29b0f896 AM |
3290 | if (i.prefix[REX_PREFIX] != 0) |
3291 | *p++ = i.prefix[REX_PREFIX]; | |
252b5132 | 3292 | |
29b0f896 AM |
3293 | *p++ = i.tm.base_opcode; |
3294 | if (i.op[1].imms->X_op == O_constant) | |
3295 | { | |
3296 | offsetT n = i.op[1].imms->X_add_number; | |
252b5132 | 3297 | |
29b0f896 AM |
3298 | if (size == 2 |
3299 | && !fits_in_unsigned_word (n) | |
3300 | && !fits_in_signed_word (n)) | |
3301 | { | |
3302 | as_bad (_("16-bit jump out of range")); | |
3303 | return; | |
3304 | } | |
3305 | md_number_to_chars (p, n, size); | |
3306 | } | |
3307 | else | |
3308 | fix_new_exp (frag_now, p - frag_now->fr_literal, size, | |
3309 | i.op[1].imms, 0, reloc (size, 0, 0, i.reloc[1])); | |
3310 | if (i.op[0].imms->X_op != O_constant) | |
3311 | as_bad (_("can't handle non absolute segment in `%s'"), | |
3312 | i.tm.name); | |
3313 | md_number_to_chars (p + size, (valueT) i.op[0].imms->X_add_number, 2); | |
3314 | } | |
a217f122 | 3315 | |
29b0f896 AM |
3316 | static void |
3317 | output_insn () | |
3318 | { | |
2bbd9c25 JJ |
3319 | fragS *insn_start_frag; |
3320 | offsetT insn_start_off; | |
3321 | ||
29b0f896 AM |
3322 | /* Tie dwarf2 debug info to the address at the start of the insn. |
3323 | We can't do this after the insn has been output as the current | |
3324 | frag may have been closed off. eg. by frag_var. */ | |
3325 | dwarf2_emit_insn (0); | |
3326 | ||
2bbd9c25 JJ |
3327 | insn_start_frag = frag_now; |
3328 | insn_start_off = frag_now_fix (); | |
3329 | ||
29b0f896 AM |
3330 | /* Output jumps. */ |
3331 | if (i.tm.opcode_modifier & Jump) | |
3332 | output_branch (); | |
3333 | else if (i.tm.opcode_modifier & (JumpByte | JumpDword)) | |
3334 | output_jump (); | |
3335 | else if (i.tm.opcode_modifier & JumpInterSegment) | |
3336 | output_interseg_jump (); | |
3337 | else | |
3338 | { | |
3339 | /* Output normal instructions here. */ | |
3340 | char *p; | |
3341 | unsigned char *q; | |
252b5132 | 3342 | |
bc4bd9ab MK |
3343 | /* All opcodes on i386 have either 1 or 2 bytes. We may use one |
3344 | more higher byte to specify a prefix the instruction | |
3345 | requires. */ | |
3346 | if ((i.tm.base_opcode & 0xff0000) != 0) | |
3347 | { | |
3348 | if ((i.tm.cpu_flags & CpuPadLock) != 0) | |
3349 | { | |
3350 | unsigned int prefix; | |
3351 | prefix = (i.tm.base_opcode >> 16) & 0xff; | |
3352 | ||
3353 | if (prefix != REPE_PREFIX_OPCODE | |
3354 | || i.prefix[LOCKREP_PREFIX] != REPE_PREFIX_OPCODE) | |
3355 | add_prefix (prefix); | |
3356 | } | |
3357 | else | |
3358 | add_prefix ((i.tm.base_opcode >> 16) & 0xff); | |
0f10071e | 3359 | } |
252b5132 | 3360 | |
29b0f896 AM |
3361 | /* The prefix bytes. */ |
3362 | for (q = i.prefix; | |
3363 | q < i.prefix + sizeof (i.prefix) / sizeof (i.prefix[0]); | |
3364 | q++) | |
3365 | { | |
3366 | if (*q) | |
3367 | { | |
3368 | p = frag_more (1); | |
3369 | md_number_to_chars (p, (valueT) *q, 1); | |
3370 | } | |
3371 | } | |
252b5132 | 3372 | |
29b0f896 AM |
3373 | /* Now the opcode; be careful about word order here! */ |
3374 | if (fits_in_unsigned_byte (i.tm.base_opcode)) | |
3375 | { | |
3376 | FRAG_APPEND_1_CHAR (i.tm.base_opcode); | |
3377 | } | |
3378 | else | |
3379 | { | |
bc4bd9ab | 3380 | p = frag_more (2); |
0f10071e | 3381 | |
29b0f896 AM |
3382 | /* Put out high byte first: can't use md_number_to_chars! */ |
3383 | *p++ = (i.tm.base_opcode >> 8) & 0xff; | |
3384 | *p = i.tm.base_opcode & 0xff; | |
3385 | } | |
3e73aa7c | 3386 | |
29b0f896 AM |
3387 | /* Now the modrm byte and sib byte (if present). */ |
3388 | if (i.tm.opcode_modifier & Modrm) | |
3389 | { | |
3390 | p = frag_more (1); | |
3391 | md_number_to_chars (p, | |
3392 | (valueT) (i.rm.regmem << 0 | |
3393 | | i.rm.reg << 3 | |
3394 | | i.rm.mode << 6), | |
3395 | 1); | |
3396 | /* If i.rm.regmem == ESP (4) | |
3397 | && i.rm.mode != (Register mode) | |
3398 | && not 16 bit | |
3399 | ==> need second modrm byte. */ | |
3400 | if (i.rm.regmem == ESCAPE_TO_TWO_BYTE_ADDRESSING | |
3401 | && i.rm.mode != 3 | |
3402 | && !(i.base_reg && (i.base_reg->reg_type & Reg16) != 0)) | |
3403 | { | |
3404 | p = frag_more (1); | |
3405 | md_number_to_chars (p, | |
3406 | (valueT) (i.sib.base << 0 | |
3407 | | i.sib.index << 3 | |
3408 | | i.sib.scale << 6), | |
3409 | 1); | |
3410 | } | |
3411 | } | |
3e73aa7c | 3412 | |
29b0f896 | 3413 | if (i.disp_operands) |
2bbd9c25 | 3414 | output_disp (insn_start_frag, insn_start_off); |
3e73aa7c | 3415 | |
29b0f896 | 3416 | if (i.imm_operands) |
2bbd9c25 | 3417 | output_imm (insn_start_frag, insn_start_off); |
29b0f896 | 3418 | } |
252b5132 | 3419 | |
29b0f896 AM |
3420 | #ifdef DEBUG386 |
3421 | if (flag_debug) | |
3422 | { | |
3423 | pi (line, &i); | |
3424 | } | |
3425 | #endif /* DEBUG386 */ | |
3426 | } | |
252b5132 | 3427 | |
29b0f896 | 3428 | static void |
2bbd9c25 JJ |
3429 | output_disp (insn_start_frag, insn_start_off) |
3430 | fragS *insn_start_frag; | |
3431 | offsetT insn_start_off; | |
29b0f896 AM |
3432 | { |
3433 | char *p; | |
3434 | unsigned int n; | |
252b5132 | 3435 | |
29b0f896 AM |
3436 | for (n = 0; n < i.operands; n++) |
3437 | { | |
3438 | if (i.types[n] & Disp) | |
3439 | { | |
3440 | if (i.op[n].disps->X_op == O_constant) | |
3441 | { | |
3442 | int size; | |
3443 | offsetT val; | |
252b5132 | 3444 | |
29b0f896 AM |
3445 | size = 4; |
3446 | if (i.types[n] & (Disp8 | Disp16 | Disp64)) | |
3447 | { | |
3448 | size = 2; | |
3449 | if (i.types[n] & Disp8) | |
3450 | size = 1; | |
3451 | if (i.types[n] & Disp64) | |
3452 | size = 8; | |
3453 | } | |
3454 | val = offset_in_range (i.op[n].disps->X_add_number, | |
3455 | size); | |
3456 | p = frag_more (size); | |
3457 | md_number_to_chars (p, val, size); | |
3458 | } | |
3459 | else | |
3460 | { | |
f86103b7 | 3461 | enum bfd_reloc_code_real reloc_type; |
29b0f896 AM |
3462 | int size = 4; |
3463 | int sign = 0; | |
3464 | int pcrel = (i.flags[n] & Operand_PCrel) != 0; | |
3465 | ||
3466 | /* The PC relative address is computed relative | |
3467 | to the instruction boundary, so in case immediate | |
3468 | fields follows, we need to adjust the value. */ | |
3469 | if (pcrel && i.imm_operands) | |
3470 | { | |
3471 | int imm_size = 4; | |
3472 | unsigned int n1; | |
252b5132 | 3473 | |
29b0f896 AM |
3474 | for (n1 = 0; n1 < i.operands; n1++) |
3475 | if (i.types[n1] & Imm) | |
252b5132 | 3476 | { |
29b0f896 | 3477 | if (i.types[n1] & (Imm8 | Imm8S | Imm16 | Imm64)) |
252b5132 | 3478 | { |
29b0f896 AM |
3479 | imm_size = 2; |
3480 | if (i.types[n1] & (Imm8 | Imm8S)) | |
3481 | imm_size = 1; | |
3482 | if (i.types[n1] & Imm64) | |
3483 | imm_size = 8; | |
252b5132 | 3484 | } |
29b0f896 | 3485 | break; |
252b5132 | 3486 | } |
29b0f896 AM |
3487 | /* We should find the immediate. */ |
3488 | if (n1 == i.operands) | |
3489 | abort (); | |
3490 | i.op[n].disps->X_add_number -= imm_size; | |
3491 | } | |
520dc8e8 | 3492 | |
29b0f896 AM |
3493 | if (i.types[n] & Disp32S) |
3494 | sign = 1; | |
3e73aa7c | 3495 | |
29b0f896 AM |
3496 | if (i.types[n] & (Disp16 | Disp64)) |
3497 | { | |
3498 | size = 2; | |
3499 | if (i.types[n] & Disp64) | |
3500 | size = 8; | |
3501 | } | |
520dc8e8 | 3502 | |
29b0f896 | 3503 | p = frag_more (size); |
2bbd9c25 | 3504 | reloc_type = reloc (size, pcrel, sign, i.reloc[n]); |
2bbd9c25 JJ |
3505 | if (reloc_type == BFD_RELOC_32 |
3506 | && GOT_symbol | |
3507 | && GOT_symbol == i.op[n].disps->X_add_symbol | |
3508 | && (i.op[n].disps->X_op == O_symbol | |
3509 | || (i.op[n].disps->X_op == O_add | |
3510 | && ((symbol_get_value_expression | |
3511 | (i.op[n].disps->X_op_symbol)->X_op) | |
3512 | == O_subtract)))) | |
3513 | { | |
3514 | offsetT add; | |
3515 | ||
3516 | if (insn_start_frag == frag_now) | |
3517 | add = (p - frag_now->fr_literal) - insn_start_off; | |
3518 | else | |
3519 | { | |
3520 | fragS *fr; | |
3521 | ||
3522 | add = insn_start_frag->fr_fix - insn_start_off; | |
3523 | for (fr = insn_start_frag->fr_next; | |
3524 | fr && fr != frag_now; fr = fr->fr_next) | |
3525 | add += fr->fr_fix; | |
3526 | add += p - frag_now->fr_literal; | |
3527 | } | |
3528 | ||
3529 | /* We don't support dynamic linking on x86-64 yet. */ | |
3530 | if (flag_code == CODE_64BIT) | |
3531 | abort (); | |
3532 | reloc_type = BFD_RELOC_386_GOTPC; | |
3533 | i.op[n].disps->X_add_number += add; | |
3534 | } | |
062cd5e7 | 3535 | fix_new_exp (frag_now, p - frag_now->fr_literal, size, |
2bbd9c25 | 3536 | i.op[n].disps, pcrel, reloc_type); |
29b0f896 AM |
3537 | } |
3538 | } | |
3539 | } | |
3540 | } | |
252b5132 | 3541 | |
29b0f896 | 3542 | static void |
2bbd9c25 JJ |
3543 | output_imm (insn_start_frag, insn_start_off) |
3544 | fragS *insn_start_frag; | |
3545 | offsetT insn_start_off; | |
29b0f896 AM |
3546 | { |
3547 | char *p; | |
3548 | unsigned int n; | |
252b5132 | 3549 | |
29b0f896 AM |
3550 | for (n = 0; n < i.operands; n++) |
3551 | { | |
3552 | if (i.types[n] & Imm) | |
3553 | { | |
3554 | if (i.op[n].imms->X_op == O_constant) | |
3555 | { | |
3556 | int size; | |
3557 | offsetT val; | |
b4cac588 | 3558 | |
29b0f896 AM |
3559 | size = 4; |
3560 | if (i.types[n] & (Imm8 | Imm8S | Imm16 | Imm64)) | |
3561 | { | |
3562 | size = 2; | |
3563 | if (i.types[n] & (Imm8 | Imm8S)) | |
3564 | size = 1; | |
3565 | else if (i.types[n] & Imm64) | |
3566 | size = 8; | |
3567 | } | |
3568 | val = offset_in_range (i.op[n].imms->X_add_number, | |
3569 | size); | |
3570 | p = frag_more (size); | |
3571 | md_number_to_chars (p, val, size); | |
3572 | } | |
3573 | else | |
3574 | { | |
3575 | /* Not absolute_section. | |
3576 | Need a 32-bit fixup (don't support 8bit | |
3577 | non-absolute imms). Try to support other | |
3578 | sizes ... */ | |
f86103b7 | 3579 | enum bfd_reloc_code_real reloc_type; |
29b0f896 AM |
3580 | int size = 4; |
3581 | int sign = 0; | |
3582 | ||
3583 | if ((i.types[n] & (Imm32S)) | |
a7d61044 JB |
3584 | && (i.suffix == QWORD_MNEM_SUFFIX |
3585 | || (!i.suffix && (i.tm.opcode_modifier & No_lSuf)))) | |
29b0f896 AM |
3586 | sign = 1; |
3587 | if (i.types[n] & (Imm8 | Imm8S | Imm16 | Imm64)) | |
3588 | { | |
3589 | size = 2; | |
3590 | if (i.types[n] & (Imm8 | Imm8S)) | |
3591 | size = 1; | |
3592 | if (i.types[n] & Imm64) | |
3593 | size = 8; | |
3594 | } | |
520dc8e8 | 3595 | |
29b0f896 AM |
3596 | p = frag_more (size); |
3597 | reloc_type = reloc (size, 0, sign, i.reloc[n]); | |
f86103b7 | 3598 | |
2bbd9c25 JJ |
3599 | /* This is tough to explain. We end up with this one if we |
3600 | * have operands that look like | |
3601 | * "_GLOBAL_OFFSET_TABLE_+[.-.L284]". The goal here is to | |
3602 | * obtain the absolute address of the GOT, and it is strongly | |
3603 | * preferable from a performance point of view to avoid using | |
3604 | * a runtime relocation for this. The actual sequence of | |
3605 | * instructions often look something like: | |
3606 | * | |
3607 | * call .L66 | |
3608 | * .L66: | |
3609 | * popl %ebx | |
3610 | * addl $_GLOBAL_OFFSET_TABLE_+[.-.L66],%ebx | |
3611 | * | |
3612 | * The call and pop essentially return the absolute address | |
3613 | * of the label .L66 and store it in %ebx. The linker itself | |
3614 | * will ultimately change the first operand of the addl so | |
3615 | * that %ebx points to the GOT, but to keep things simple, the | |
3616 | * .o file must have this operand set so that it generates not | |
3617 | * the absolute address of .L66, but the absolute address of | |
3618 | * itself. This allows the linker itself simply treat a GOTPC | |
3619 | * relocation as asking for a pcrel offset to the GOT to be | |
3620 | * added in, and the addend of the relocation is stored in the | |
3621 | * operand field for the instruction itself. | |
3622 | * | |
3623 | * Our job here is to fix the operand so that it would add | |
3624 | * the correct offset so that %ebx would point to itself. The | |
3625 | * thing that is tricky is that .-.L66 will point to the | |
3626 | * beginning of the instruction, so we need to further modify | |
3627 | * the operand so that it will point to itself. There are | |
3628 | * other cases where you have something like: | |
3629 | * | |
3630 | * .long $_GLOBAL_OFFSET_TABLE_+[.-.L66] | |
3631 | * | |
3632 | * and here no correction would be required. Internally in | |
3633 | * the assembler we treat operands of this form as not being | |
3634 | * pcrel since the '.' is explicitly mentioned, and I wonder | |
3635 | * whether it would simplify matters to do it this way. Who | |
3636 | * knows. In earlier versions of the PIC patches, the | |
3637 | * pcrel_adjust field was used to store the correction, but | |
3638 | * since the expression is not pcrel, I felt it would be | |
3639 | * confusing to do it this way. */ | |
3640 | ||
29b0f896 AM |
3641 | if (reloc_type == BFD_RELOC_32 |
3642 | && GOT_symbol | |
3643 | && GOT_symbol == i.op[n].imms->X_add_symbol | |
3644 | && (i.op[n].imms->X_op == O_symbol | |
3645 | || (i.op[n].imms->X_op == O_add | |
3646 | && ((symbol_get_value_expression | |
3647 | (i.op[n].imms->X_op_symbol)->X_op) | |
3648 | == O_subtract)))) | |
3649 | { | |
2bbd9c25 JJ |
3650 | offsetT add; |
3651 | ||
3652 | if (insn_start_frag == frag_now) | |
3653 | add = (p - frag_now->fr_literal) - insn_start_off; | |
3654 | else | |
3655 | { | |
3656 | fragS *fr; | |
3657 | ||
3658 | add = insn_start_frag->fr_fix - insn_start_off; | |
3659 | for (fr = insn_start_frag->fr_next; | |
3660 | fr && fr != frag_now; fr = fr->fr_next) | |
3661 | add += fr->fr_fix; | |
3662 | add += p - frag_now->fr_literal; | |
3663 | } | |
3664 | ||
29b0f896 AM |
3665 | /* We don't support dynamic linking on x86-64 yet. */ |
3666 | if (flag_code == CODE_64BIT) | |
3667 | abort (); | |
3668 | reloc_type = BFD_RELOC_386_GOTPC; | |
2bbd9c25 | 3669 | i.op[n].imms->X_add_number += add; |
29b0f896 | 3670 | } |
29b0f896 AM |
3671 | fix_new_exp (frag_now, p - frag_now->fr_literal, size, |
3672 | i.op[n].imms, 0, reloc_type); | |
3673 | } | |
3674 | } | |
3675 | } | |
252b5132 RH |
3676 | } |
3677 | \f | |
f3c180ae | 3678 | #ifndef LEX_AT |
f86103b7 | 3679 | static char *lex_got PARAMS ((enum bfd_reloc_code_real *, int *)); |
f3c180ae AM |
3680 | |
3681 | /* Parse operands of the form | |
3682 | <symbol>@GOTOFF+<nnn> | |
3683 | and similar .plt or .got references. | |
3684 | ||
3685 | If we find one, set up the correct relocation in RELOC and copy the | |
3686 | input string, minus the `@GOTOFF' into a malloc'd buffer for | |
3687 | parsing by the calling routine. Return this buffer, and if ADJUST | |
3688 | is non-null set it to the length of the string we removed from the | |
3689 | input line. Otherwise return NULL. */ | |
3690 | static char * | |
3691 | lex_got (reloc, adjust) | |
f86103b7 | 3692 | enum bfd_reloc_code_real *reloc; |
f3c180ae AM |
3693 | int *adjust; |
3694 | { | |
3695 | static const char * const mode_name[NUM_FLAG_CODE] = { "32", "16", "64" }; | |
3696 | static const struct { | |
3697 | const char *str; | |
f86103b7 | 3698 | const enum bfd_reloc_code_real rel[NUM_FLAG_CODE]; |
f3c180ae | 3699 | } gotrel[] = { |
13ae64f3 JJ |
3700 | { "PLT", { BFD_RELOC_386_PLT32, 0, BFD_RELOC_X86_64_PLT32 } }, |
3701 | { "GOTOFF", { BFD_RELOC_386_GOTOFF, 0, 0 } }, | |
3702 | { "GOTPCREL", { 0, 0, BFD_RELOC_X86_64_GOTPCREL } }, | |
bffbf940 | 3703 | { "TLSGD", { BFD_RELOC_386_TLS_GD, 0, BFD_RELOC_X86_64_TLSGD } }, |
13ae64f3 | 3704 | { "TLSLDM", { BFD_RELOC_386_TLS_LDM, 0, 0 } }, |
bffbf940 JJ |
3705 | { "TLSLD", { 0, 0, BFD_RELOC_X86_64_TLSLD } }, |
3706 | { "GOTTPOFF", { BFD_RELOC_386_TLS_IE_32, 0, BFD_RELOC_X86_64_GOTTPOFF } }, | |
3707 | { "TPOFF", { BFD_RELOC_386_TLS_LE_32, 0, BFD_RELOC_X86_64_TPOFF32 } }, | |
13ae64f3 | 3708 | { "NTPOFF", { BFD_RELOC_386_TLS_LE, 0, 0 } }, |
bffbf940 | 3709 | { "DTPOFF", { BFD_RELOC_386_TLS_LDO_32, 0, BFD_RELOC_X86_64_DTPOFF32 } }, |
37e55690 JJ |
3710 | { "GOTNTPOFF",{ BFD_RELOC_386_TLS_GOTIE, 0, 0 } }, |
3711 | { "INDNTPOFF",{ BFD_RELOC_386_TLS_IE, 0, 0 } }, | |
13ae64f3 | 3712 | { "GOT", { BFD_RELOC_386_GOT32, 0, BFD_RELOC_X86_64_GOT32 } } |
f3c180ae AM |
3713 | }; |
3714 | char *cp; | |
3715 | unsigned int j; | |
3716 | ||
3717 | for (cp = input_line_pointer; *cp != '@'; cp++) | |
3718 | if (is_end_of_line[(unsigned char) *cp]) | |
3719 | return NULL; | |
3720 | ||
3721 | for (j = 0; j < sizeof (gotrel) / sizeof (gotrel[0]); j++) | |
3722 | { | |
3723 | int len; | |
3724 | ||
3725 | len = strlen (gotrel[j].str); | |
28f81592 | 3726 | if (strncasecmp (cp + 1, gotrel[j].str, len) == 0) |
f3c180ae AM |
3727 | { |
3728 | if (gotrel[j].rel[(unsigned int) flag_code] != 0) | |
3729 | { | |
28f81592 AM |
3730 | int first, second; |
3731 | char *tmpbuf, *past_reloc; | |
f3c180ae AM |
3732 | |
3733 | *reloc = gotrel[j].rel[(unsigned int) flag_code]; | |
28f81592 AM |
3734 | if (adjust) |
3735 | *adjust = len; | |
f3c180ae AM |
3736 | |
3737 | if (GOT_symbol == NULL) | |
3738 | GOT_symbol = symbol_find_or_make (GLOBAL_OFFSET_TABLE_NAME); | |
3739 | ||
3740 | /* Replace the relocation token with ' ', so that | |
3741 | errors like foo@GOTOFF1 will be detected. */ | |
28f81592 AM |
3742 | |
3743 | /* The length of the first part of our input line. */ | |
f3c180ae | 3744 | first = cp - input_line_pointer; |
28f81592 AM |
3745 | |
3746 | /* The second part goes from after the reloc token until | |
3747 | (and including) an end_of_line char. Don't use strlen | |
3748 | here as the end_of_line char may not be a NUL. */ | |
3749 | past_reloc = cp + 1 + len; | |
3750 | for (cp = past_reloc; !is_end_of_line[(unsigned char) *cp++]; ) | |
3751 | ; | |
3752 | second = cp - past_reloc; | |
3753 | ||
3754 | /* Allocate and copy string. The trailing NUL shouldn't | |
3755 | be necessary, but be safe. */ | |
3756 | tmpbuf = xmalloc (first + second + 2); | |
f3c180ae AM |
3757 | memcpy (tmpbuf, input_line_pointer, first); |
3758 | tmpbuf[first] = ' '; | |
28f81592 AM |
3759 | memcpy (tmpbuf + first + 1, past_reloc, second); |
3760 | tmpbuf[first + second + 1] = '\0'; | |
f3c180ae AM |
3761 | return tmpbuf; |
3762 | } | |
3763 | ||
3764 | as_bad (_("@%s reloc is not supported in %s bit mode"), | |
3765 | gotrel[j].str, mode_name[(unsigned int) flag_code]); | |
3766 | return NULL; | |
3767 | } | |
3768 | } | |
3769 | ||
3770 | /* Might be a symbol version string. Don't as_bad here. */ | |
3771 | return NULL; | |
3772 | } | |
3773 | ||
3774 | /* x86_cons_fix_new is called via the expression parsing code when a | |
3775 | reloc is needed. We use this hook to get the correct .got reloc. */ | |
f86103b7 | 3776 | static enum bfd_reloc_code_real got_reloc = NO_RELOC; |
f3c180ae AM |
3777 | |
3778 | void | |
3779 | x86_cons_fix_new (frag, off, len, exp) | |
3780 | fragS *frag; | |
3781 | unsigned int off; | |
3782 | unsigned int len; | |
3783 | expressionS *exp; | |
3784 | { | |
f86103b7 | 3785 | enum bfd_reloc_code_real r = reloc (len, 0, 0, got_reloc); |
f3c180ae AM |
3786 | got_reloc = NO_RELOC; |
3787 | fix_new_exp (frag, off, len, exp, 0, r); | |
3788 | } | |
3789 | ||
3790 | void | |
3791 | x86_cons (exp, size) | |
3792 | expressionS *exp; | |
3793 | int size; | |
3794 | { | |
3795 | if (size == 4) | |
3796 | { | |
3797 | /* Handle @GOTOFF and the like in an expression. */ | |
3798 | char *save; | |
3799 | char *gotfree_input_line; | |
3800 | int adjust; | |
3801 | ||
3802 | save = input_line_pointer; | |
3803 | gotfree_input_line = lex_got (&got_reloc, &adjust); | |
3804 | if (gotfree_input_line) | |
3805 | input_line_pointer = gotfree_input_line; | |
3806 | ||
3807 | expression (exp); | |
3808 | ||
3809 | if (gotfree_input_line) | |
3810 | { | |
3811 | /* expression () has merrily parsed up to the end of line, | |
3812 | or a comma - in the wrong buffer. Transfer how far | |
3813 | input_line_pointer has moved to the right buffer. */ | |
3814 | input_line_pointer = (save | |
3815 | + (input_line_pointer - gotfree_input_line) | |
3816 | + adjust); | |
3817 | free (gotfree_input_line); | |
3818 | } | |
3819 | } | |
3820 | else | |
3821 | expression (exp); | |
3822 | } | |
3823 | #endif | |
3824 | ||
6482c264 NC |
3825 | #ifdef TE_PE |
3826 | ||
6482c264 NC |
3827 | void |
3828 | x86_pe_cons_fix_new (frag, off, len, exp) | |
3829 | fragS *frag; | |
3830 | unsigned int off; | |
3831 | unsigned int len; | |
3832 | expressionS *exp; | |
3833 | { | |
3834 | enum bfd_reloc_code_real r = reloc (len, 0, 0, NO_RELOC); | |
3835 | ||
3836 | if (exp->X_op == O_secrel) | |
3837 | { | |
3838 | exp->X_op = O_symbol; | |
3839 | r = BFD_RELOC_32_SECREL; | |
3840 | } | |
3841 | ||
3842 | fix_new_exp (frag, off, len, exp, 0, r); | |
3843 | } | |
3844 | ||
3845 | static void | |
3846 | pe_directive_secrel (dummy) | |
3847 | int dummy ATTRIBUTE_UNUSED; | |
3848 | { | |
3849 | expressionS exp; | |
3850 | ||
3851 | do | |
3852 | { | |
3853 | expression (&exp); | |
3854 | if (exp.X_op == O_symbol) | |
3855 | exp.X_op = O_secrel; | |
3856 | ||
3857 | emit_expr (&exp, 4); | |
3858 | } | |
3859 | while (*input_line_pointer++ == ','); | |
3860 | ||
3861 | input_line_pointer--; | |
3862 | demand_empty_rest_of_line (); | |
3863 | } | |
3864 | ||
3865 | #endif | |
3866 | ||
252b5132 RH |
3867 | static int i386_immediate PARAMS ((char *)); |
3868 | ||
3869 | static int | |
3870 | i386_immediate (imm_start) | |
3871 | char *imm_start; | |
3872 | { | |
3873 | char *save_input_line_pointer; | |
f3c180ae AM |
3874 | #ifndef LEX_AT |
3875 | char *gotfree_input_line; | |
3876 | #endif | |
252b5132 | 3877 | segT exp_seg = 0; |
47926f60 | 3878 | expressionS *exp; |
252b5132 RH |
3879 | |
3880 | if (i.imm_operands == MAX_IMMEDIATE_OPERANDS) | |
3881 | { | |
d0b47220 | 3882 | as_bad (_("only 1 or 2 immediate operands are allowed")); |
252b5132 RH |
3883 | return 0; |
3884 | } | |
3885 | ||
3886 | exp = &im_expressions[i.imm_operands++]; | |
520dc8e8 | 3887 | i.op[this_operand].imms = exp; |
252b5132 RH |
3888 | |
3889 | if (is_space_char (*imm_start)) | |
3890 | ++imm_start; | |
3891 | ||
3892 | save_input_line_pointer = input_line_pointer; | |
3893 | input_line_pointer = imm_start; | |
3894 | ||
3895 | #ifndef LEX_AT | |
f3c180ae AM |
3896 | gotfree_input_line = lex_got (&i.reloc[this_operand], NULL); |
3897 | if (gotfree_input_line) | |
3898 | input_line_pointer = gotfree_input_line; | |
252b5132 RH |
3899 | #endif |
3900 | ||
3901 | exp_seg = expression (exp); | |
3902 | ||
83183c0c | 3903 | SKIP_WHITESPACE (); |
252b5132 | 3904 | if (*input_line_pointer) |
f3c180ae | 3905 | as_bad (_("junk `%s' after expression"), input_line_pointer); |
252b5132 RH |
3906 | |
3907 | input_line_pointer = save_input_line_pointer; | |
f3c180ae AM |
3908 | #ifndef LEX_AT |
3909 | if (gotfree_input_line) | |
3910 | free (gotfree_input_line); | |
3911 | #endif | |
252b5132 | 3912 | |
2daf4fd8 | 3913 | if (exp->X_op == O_absent || exp->X_op == O_big) |
252b5132 | 3914 | { |
47926f60 | 3915 | /* Missing or bad expr becomes absolute 0. */ |
d0b47220 | 3916 | as_bad (_("missing or invalid immediate expression `%s' taken as 0"), |
24eab124 | 3917 | imm_start); |
252b5132 RH |
3918 | exp->X_op = O_constant; |
3919 | exp->X_add_number = 0; | |
3920 | exp->X_add_symbol = (symbolS *) 0; | |
3921 | exp->X_op_symbol = (symbolS *) 0; | |
252b5132 | 3922 | } |
3e73aa7c | 3923 | else if (exp->X_op == O_constant) |
252b5132 | 3924 | { |
47926f60 | 3925 | /* Size it properly later. */ |
3e73aa7c JH |
3926 | i.types[this_operand] |= Imm64; |
3927 | /* If BFD64, sign extend val. */ | |
3928 | if (!use_rela_relocations) | |
3929 | if ((exp->X_add_number & ~(((addressT) 2 << 31) - 1)) == 0) | |
3930 | exp->X_add_number = (exp->X_add_number ^ ((addressT) 1 << 31)) - ((addressT) 1 << 31); | |
252b5132 | 3931 | } |
4c63da97 | 3932 | #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT)) |
f86103b7 | 3933 | else if (OUTPUT_FLAVOR == bfd_target_aout_flavour |
31312f95 | 3934 | && exp_seg != absolute_section |
47926f60 | 3935 | && exp_seg != text_section |
24eab124 AM |
3936 | && exp_seg != data_section |
3937 | && exp_seg != bss_section | |
3938 | && exp_seg != undefined_section | |
f86103b7 | 3939 | && !bfd_is_com_section (exp_seg)) |
252b5132 | 3940 | { |
d0b47220 | 3941 | as_bad (_("unimplemented segment %s in operand"), exp_seg->name); |
252b5132 RH |
3942 | return 0; |
3943 | } | |
3944 | #endif | |
3945 | else | |
3946 | { | |
3947 | /* This is an address. The size of the address will be | |
24eab124 | 3948 | determined later, depending on destination register, |
3e73aa7c JH |
3949 | suffix, or the default for the section. */ |
3950 | i.types[this_operand] |= Imm8 | Imm16 | Imm32 | Imm32S | Imm64; | |
252b5132 RH |
3951 | } |
3952 | ||
3953 | return 1; | |
3954 | } | |
3955 | ||
551c1ca1 | 3956 | static char *i386_scale PARAMS ((char *)); |
252b5132 | 3957 | |
551c1ca1 | 3958 | static char * |
252b5132 RH |
3959 | i386_scale (scale) |
3960 | char *scale; | |
3961 | { | |
551c1ca1 AM |
3962 | offsetT val; |
3963 | char *save = input_line_pointer; | |
252b5132 | 3964 | |
551c1ca1 AM |
3965 | input_line_pointer = scale; |
3966 | val = get_absolute_expression (); | |
3967 | ||
3968 | switch (val) | |
252b5132 | 3969 | { |
551c1ca1 | 3970 | case 1: |
252b5132 RH |
3971 | i.log2_scale_factor = 0; |
3972 | break; | |
551c1ca1 | 3973 | case 2: |
252b5132 RH |
3974 | i.log2_scale_factor = 1; |
3975 | break; | |
551c1ca1 | 3976 | case 4: |
252b5132 RH |
3977 | i.log2_scale_factor = 2; |
3978 | break; | |
551c1ca1 | 3979 | case 8: |
252b5132 RH |
3980 | i.log2_scale_factor = 3; |
3981 | break; | |
3982 | default: | |
a724f0f4 JB |
3983 | { |
3984 | char sep = *input_line_pointer; | |
3985 | ||
3986 | *input_line_pointer = '\0'; | |
3987 | as_bad (_("expecting scale factor of 1, 2, 4, or 8: got `%s'"), | |
3988 | scale); | |
3989 | *input_line_pointer = sep; | |
3990 | input_line_pointer = save; | |
3991 | return NULL; | |
3992 | } | |
252b5132 | 3993 | } |
29b0f896 | 3994 | if (i.log2_scale_factor != 0 && i.index_reg == 0) |
252b5132 RH |
3995 | { |
3996 | as_warn (_("scale factor of %d without an index register"), | |
24eab124 | 3997 | 1 << i.log2_scale_factor); |
252b5132 RH |
3998 | #if SCALE1_WHEN_NO_INDEX |
3999 | i.log2_scale_factor = 0; | |
4000 | #endif | |
4001 | } | |
551c1ca1 AM |
4002 | scale = input_line_pointer; |
4003 | input_line_pointer = save; | |
4004 | return scale; | |
252b5132 RH |
4005 | } |
4006 | ||
4007 | static int i386_displacement PARAMS ((char *, char *)); | |
4008 | ||
4009 | static int | |
4010 | i386_displacement (disp_start, disp_end) | |
4011 | char *disp_start; | |
4012 | char *disp_end; | |
4013 | { | |
29b0f896 | 4014 | expressionS *exp; |
252b5132 RH |
4015 | segT exp_seg = 0; |
4016 | char *save_input_line_pointer; | |
f3c180ae AM |
4017 | #ifndef LEX_AT |
4018 | char *gotfree_input_line; | |
4019 | #endif | |
252b5132 RH |
4020 | int bigdisp = Disp32; |
4021 | ||
3e73aa7c | 4022 | if (flag_code == CODE_64BIT) |
7ecd2f8b | 4023 | { |
29b0f896 AM |
4024 | if (i.prefix[ADDR_PREFIX] == 0) |
4025 | bigdisp = Disp64; | |
7ecd2f8b JH |
4026 | } |
4027 | else if ((flag_code == CODE_16BIT) ^ (i.prefix[ADDR_PREFIX] != 0)) | |
4028 | bigdisp = Disp16; | |
252b5132 RH |
4029 | i.types[this_operand] |= bigdisp; |
4030 | ||
4031 | exp = &disp_expressions[i.disp_operands]; | |
520dc8e8 | 4032 | i.op[this_operand].disps = exp; |
252b5132 RH |
4033 | i.disp_operands++; |
4034 | save_input_line_pointer = input_line_pointer; | |
4035 | input_line_pointer = disp_start; | |
4036 | END_STRING_AND_SAVE (disp_end); | |
4037 | ||
4038 | #ifndef GCC_ASM_O_HACK | |
4039 | #define GCC_ASM_O_HACK 0 | |
4040 | #endif | |
4041 | #if GCC_ASM_O_HACK | |
4042 | END_STRING_AND_SAVE (disp_end + 1); | |
4043 | if ((i.types[this_operand] & BaseIndex) != 0 | |
24eab124 | 4044 | && displacement_string_end[-1] == '+') |
252b5132 RH |
4045 | { |
4046 | /* This hack is to avoid a warning when using the "o" | |
24eab124 AM |
4047 | constraint within gcc asm statements. |
4048 | For instance: | |
4049 | ||
4050 | #define _set_tssldt_desc(n,addr,limit,type) \ | |
4051 | __asm__ __volatile__ ( \ | |
4052 | "movw %w2,%0\n\t" \ | |
4053 | "movw %w1,2+%0\n\t" \ | |
4054 | "rorl $16,%1\n\t" \ | |
4055 | "movb %b1,4+%0\n\t" \ | |
4056 | "movb %4,5+%0\n\t" \ | |
4057 | "movb $0,6+%0\n\t" \ | |
4058 | "movb %h1,7+%0\n\t" \ | |
4059 | "rorl $16,%1" \ | |
4060 | : "=o"(*(n)) : "q" (addr), "ri"(limit), "i"(type)) | |
4061 | ||
4062 | This works great except that the output assembler ends | |
4063 | up looking a bit weird if it turns out that there is | |
4064 | no offset. You end up producing code that looks like: | |
4065 | ||
4066 | #APP | |
4067 | movw $235,(%eax) | |
4068 | movw %dx,2+(%eax) | |
4069 | rorl $16,%edx | |
4070 | movb %dl,4+(%eax) | |
4071 | movb $137,5+(%eax) | |
4072 | movb $0,6+(%eax) | |
4073 | movb %dh,7+(%eax) | |
4074 | rorl $16,%edx | |
4075 | #NO_APP | |
4076 | ||
47926f60 | 4077 | So here we provide the missing zero. */ |
24eab124 AM |
4078 | |
4079 | *displacement_string_end = '0'; | |
252b5132 RH |
4080 | } |
4081 | #endif | |
4082 | #ifndef LEX_AT | |
f3c180ae AM |
4083 | gotfree_input_line = lex_got (&i.reloc[this_operand], NULL); |
4084 | if (gotfree_input_line) | |
4085 | input_line_pointer = gotfree_input_line; | |
252b5132 RH |
4086 | #endif |
4087 | ||
24eab124 | 4088 | exp_seg = expression (exp); |
252b5132 | 4089 | |
636c26b0 AM |
4090 | SKIP_WHITESPACE (); |
4091 | if (*input_line_pointer) | |
4092 | as_bad (_("junk `%s' after expression"), input_line_pointer); | |
4093 | #if GCC_ASM_O_HACK | |
4094 | RESTORE_END_STRING (disp_end + 1); | |
4095 | #endif | |
4096 | RESTORE_END_STRING (disp_end); | |
4097 | input_line_pointer = save_input_line_pointer; | |
4098 | #ifndef LEX_AT | |
4099 | if (gotfree_input_line) | |
4100 | free (gotfree_input_line); | |
4101 | #endif | |
4102 | ||
24eab124 AM |
4103 | /* We do this to make sure that the section symbol is in |
4104 | the symbol table. We will ultimately change the relocation | |
47926f60 | 4105 | to be relative to the beginning of the section. */ |
1ae12ab7 AM |
4106 | if (i.reloc[this_operand] == BFD_RELOC_386_GOTOFF |
4107 | || i.reloc[this_operand] == BFD_RELOC_X86_64_GOTPCREL) | |
24eab124 | 4108 | { |
636c26b0 AM |
4109 | if (exp->X_op != O_symbol) |
4110 | { | |
4111 | as_bad (_("bad expression used with @%s"), | |
4112 | (i.reloc[this_operand] == BFD_RELOC_X86_64_GOTPCREL | |
4113 | ? "GOTPCREL" | |
4114 | : "GOTOFF")); | |
4115 | return 0; | |
4116 | } | |
4117 | ||
e5cb08ac | 4118 | if (S_IS_LOCAL (exp->X_add_symbol) |
24eab124 AM |
4119 | && S_GET_SEGMENT (exp->X_add_symbol) != undefined_section) |
4120 | section_symbol (S_GET_SEGMENT (exp->X_add_symbol)); | |
24eab124 AM |
4121 | exp->X_op = O_subtract; |
4122 | exp->X_op_symbol = GOT_symbol; | |
1ae12ab7 | 4123 | if (i.reloc[this_operand] == BFD_RELOC_X86_64_GOTPCREL) |
29b0f896 | 4124 | i.reloc[this_operand] = BFD_RELOC_32_PCREL; |
23df1078 | 4125 | else |
29b0f896 | 4126 | i.reloc[this_operand] = BFD_RELOC_32; |
24eab124 | 4127 | } |
252b5132 | 4128 | |
2daf4fd8 AM |
4129 | if (exp->X_op == O_absent || exp->X_op == O_big) |
4130 | { | |
47926f60 | 4131 | /* Missing or bad expr becomes absolute 0. */ |
d0b47220 | 4132 | as_bad (_("missing or invalid displacement expression `%s' taken as 0"), |
2daf4fd8 AM |
4133 | disp_start); |
4134 | exp->X_op = O_constant; | |
4135 | exp->X_add_number = 0; | |
4136 | exp->X_add_symbol = (symbolS *) 0; | |
4137 | exp->X_op_symbol = (symbolS *) 0; | |
4138 | } | |
4139 | ||
4c63da97 | 4140 | #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT)) |
45288df1 | 4141 | if (exp->X_op != O_constant |
45288df1 | 4142 | && OUTPUT_FLAVOR == bfd_target_aout_flavour |
31312f95 | 4143 | && exp_seg != absolute_section |
45288df1 AM |
4144 | && exp_seg != text_section |
4145 | && exp_seg != data_section | |
4146 | && exp_seg != bss_section | |
31312f95 | 4147 | && exp_seg != undefined_section |
f86103b7 | 4148 | && !bfd_is_com_section (exp_seg)) |
24eab124 | 4149 | { |
d0b47220 | 4150 | as_bad (_("unimplemented segment %s in operand"), exp_seg->name); |
24eab124 AM |
4151 | return 0; |
4152 | } | |
252b5132 | 4153 | #endif |
3e73aa7c JH |
4154 | else if (flag_code == CODE_64BIT) |
4155 | i.types[this_operand] |= Disp32S | Disp32; | |
252b5132 RH |
4156 | return 1; |
4157 | } | |
4158 | ||
e5cb08ac | 4159 | static int i386_index_check PARAMS ((const char *)); |
252b5132 | 4160 | |
eecb386c | 4161 | /* Make sure the memory operand we've been dealt is valid. |
47926f60 KH |
4162 | Return 1 on success, 0 on a failure. */ |
4163 | ||
252b5132 | 4164 | static int |
eecb386c AM |
4165 | i386_index_check (operand_string) |
4166 | const char *operand_string; | |
252b5132 | 4167 | { |
3e73aa7c | 4168 | int ok; |
24eab124 | 4169 | #if INFER_ADDR_PREFIX |
eecb386c AM |
4170 | int fudged = 0; |
4171 | ||
24eab124 AM |
4172 | tryprefix: |
4173 | #endif | |
3e73aa7c | 4174 | ok = 1; |
20f0a1fc NC |
4175 | if (flag_code == CODE_64BIT) |
4176 | { | |
4177 | unsigned RegXX = (i.prefix[ADDR_PREFIX] == 0 ? Reg64 : Reg32); | |
4178 | ||
4179 | if ((i.base_reg | |
4180 | && ((i.base_reg->reg_type & RegXX) == 0) | |
4181 | && (i.base_reg->reg_type != BaseIndex | |
4182 | || i.index_reg)) | |
4183 | || (i.index_reg | |
4184 | && ((i.index_reg->reg_type & (RegXX | BaseIndex)) | |
4185 | != (RegXX | BaseIndex)))) | |
4186 | ok = 0; | |
3e73aa7c JH |
4187 | } |
4188 | else | |
4189 | { | |
4190 | if ((flag_code == CODE_16BIT) ^ (i.prefix[ADDR_PREFIX] != 0)) | |
4191 | { | |
4192 | /* 16bit checks. */ | |
4193 | if ((i.base_reg | |
29b0f896 AM |
4194 | && ((i.base_reg->reg_type & (Reg16 | BaseIndex | RegRex)) |
4195 | != (Reg16 | BaseIndex))) | |
3e73aa7c | 4196 | || (i.index_reg |
29b0f896 AM |
4197 | && (((i.index_reg->reg_type & (Reg16 | BaseIndex)) |
4198 | != (Reg16 | BaseIndex)) | |
4199 | || !(i.base_reg | |
4200 | && i.base_reg->reg_num < 6 | |
4201 | && i.index_reg->reg_num >= 6 | |
4202 | && i.log2_scale_factor == 0)))) | |
3e73aa7c JH |
4203 | ok = 0; |
4204 | } | |
4205 | else | |
e5cb08ac | 4206 | { |
3e73aa7c JH |
4207 | /* 32bit checks. */ |
4208 | if ((i.base_reg | |
4209 | && (i.base_reg->reg_type & (Reg32 | RegRex)) != Reg32) | |
4210 | || (i.index_reg | |
29b0f896 AM |
4211 | && ((i.index_reg->reg_type & (Reg32 | BaseIndex | RegRex)) |
4212 | != (Reg32 | BaseIndex)))) | |
e5cb08ac | 4213 | ok = 0; |
3e73aa7c JH |
4214 | } |
4215 | } | |
4216 | if (!ok) | |
24eab124 AM |
4217 | { |
4218 | #if INFER_ADDR_PREFIX | |
20f0a1fc | 4219 | if (i.prefix[ADDR_PREFIX] == 0) |
24eab124 AM |
4220 | { |
4221 | i.prefix[ADDR_PREFIX] = ADDR_PREFIX_OPCODE; | |
4222 | i.prefixes += 1; | |
b23bac36 AM |
4223 | /* Change the size of any displacement too. At most one of |
4224 | Disp16 or Disp32 is set. | |
4225 | FIXME. There doesn't seem to be any real need for separate | |
4226 | Disp16 and Disp32 flags. The same goes for Imm16 and Imm32. | |
47926f60 | 4227 | Removing them would probably clean up the code quite a lot. */ |
20f0a1fc | 4228 | if (flag_code != CODE_64BIT && (i.types[this_operand] & (Disp16 | Disp32))) |
29b0f896 | 4229 | i.types[this_operand] ^= (Disp16 | Disp32); |
eecb386c | 4230 | fudged = 1; |
24eab124 AM |
4231 | goto tryprefix; |
4232 | } | |
eecb386c AM |
4233 | if (fudged) |
4234 | as_bad (_("`%s' is not a valid base/index expression"), | |
4235 | operand_string); | |
4236 | else | |
c388dee8 | 4237 | #endif |
eecb386c AM |
4238 | as_bad (_("`%s' is not a valid %s bit base/index expression"), |
4239 | operand_string, | |
3e73aa7c | 4240 | flag_code_names[flag_code]); |
24eab124 | 4241 | } |
20f0a1fc | 4242 | return ok; |
24eab124 | 4243 | } |
252b5132 | 4244 | |
252b5132 | 4245 | /* Parse OPERAND_STRING into the i386_insn structure I. Returns non-zero |
47926f60 | 4246 | on error. */ |
252b5132 | 4247 | |
252b5132 RH |
4248 | static int |
4249 | i386_operand (operand_string) | |
4250 | char *operand_string; | |
4251 | { | |
af6bdddf AM |
4252 | const reg_entry *r; |
4253 | char *end_op; | |
24eab124 | 4254 | char *op_string = operand_string; |
252b5132 | 4255 | |
24eab124 | 4256 | if (is_space_char (*op_string)) |
252b5132 RH |
4257 | ++op_string; |
4258 | ||
24eab124 | 4259 | /* We check for an absolute prefix (differentiating, |
47926f60 | 4260 | for example, 'jmp pc_relative_label' from 'jmp *absolute_label'. */ |
24eab124 AM |
4261 | if (*op_string == ABSOLUTE_PREFIX) |
4262 | { | |
4263 | ++op_string; | |
4264 | if (is_space_char (*op_string)) | |
4265 | ++op_string; | |
4266 | i.types[this_operand] |= JumpAbsolute; | |
4267 | } | |
252b5132 | 4268 | |
47926f60 | 4269 | /* Check if operand is a register. */ |
af6bdddf AM |
4270 | if ((*op_string == REGISTER_PREFIX || allow_naked_reg) |
4271 | && (r = parse_register (op_string, &end_op)) != NULL) | |
24eab124 | 4272 | { |
24eab124 AM |
4273 | /* Check for a segment override by searching for ':' after a |
4274 | segment register. */ | |
4275 | op_string = end_op; | |
4276 | if (is_space_char (*op_string)) | |
4277 | ++op_string; | |
4278 | if (*op_string == ':' && (r->reg_type & (SReg2 | SReg3))) | |
4279 | { | |
4280 | switch (r->reg_num) | |
4281 | { | |
4282 | case 0: | |
4283 | i.seg[i.mem_operands] = &es; | |
4284 | break; | |
4285 | case 1: | |
4286 | i.seg[i.mem_operands] = &cs; | |
4287 | break; | |
4288 | case 2: | |
4289 | i.seg[i.mem_operands] = &ss; | |
4290 | break; | |
4291 | case 3: | |
4292 | i.seg[i.mem_operands] = &ds; | |
4293 | break; | |
4294 | case 4: | |
4295 | i.seg[i.mem_operands] = &fs; | |
4296 | break; | |
4297 | case 5: | |
4298 | i.seg[i.mem_operands] = &gs; | |
4299 | break; | |
4300 | } | |
252b5132 | 4301 | |
24eab124 | 4302 | /* Skip the ':' and whitespace. */ |
252b5132 RH |
4303 | ++op_string; |
4304 | if (is_space_char (*op_string)) | |
24eab124 | 4305 | ++op_string; |
252b5132 | 4306 | |
24eab124 AM |
4307 | if (!is_digit_char (*op_string) |
4308 | && !is_identifier_char (*op_string) | |
4309 | && *op_string != '(' | |
4310 | && *op_string != ABSOLUTE_PREFIX) | |
4311 | { | |
4312 | as_bad (_("bad memory operand `%s'"), op_string); | |
4313 | return 0; | |
4314 | } | |
47926f60 | 4315 | /* Handle case of %es:*foo. */ |
24eab124 AM |
4316 | if (*op_string == ABSOLUTE_PREFIX) |
4317 | { | |
4318 | ++op_string; | |
4319 | if (is_space_char (*op_string)) | |
4320 | ++op_string; | |
4321 | i.types[this_operand] |= JumpAbsolute; | |
4322 | } | |
4323 | goto do_memory_reference; | |
4324 | } | |
4325 | if (*op_string) | |
4326 | { | |
d0b47220 | 4327 | as_bad (_("junk `%s' after register"), op_string); |
24eab124 AM |
4328 | return 0; |
4329 | } | |
4330 | i.types[this_operand] |= r->reg_type & ~BaseIndex; | |
520dc8e8 | 4331 | i.op[this_operand].regs = r; |
24eab124 AM |
4332 | i.reg_operands++; |
4333 | } | |
af6bdddf AM |
4334 | else if (*op_string == REGISTER_PREFIX) |
4335 | { | |
4336 | as_bad (_("bad register name `%s'"), op_string); | |
4337 | return 0; | |
4338 | } | |
24eab124 | 4339 | else if (*op_string == IMMEDIATE_PREFIX) |
ce8a8b2f | 4340 | { |
24eab124 AM |
4341 | ++op_string; |
4342 | if (i.types[this_operand] & JumpAbsolute) | |
4343 | { | |
d0b47220 | 4344 | as_bad (_("immediate operand illegal with absolute jump")); |
24eab124 AM |
4345 | return 0; |
4346 | } | |
4347 | if (!i386_immediate (op_string)) | |
4348 | return 0; | |
4349 | } | |
4350 | else if (is_digit_char (*op_string) | |
4351 | || is_identifier_char (*op_string) | |
e5cb08ac | 4352 | || *op_string == '(') |
24eab124 | 4353 | { |
47926f60 | 4354 | /* This is a memory reference of some sort. */ |
af6bdddf | 4355 | char *base_string; |
252b5132 | 4356 | |
47926f60 | 4357 | /* Start and end of displacement string expression (if found). */ |
eecb386c AM |
4358 | char *displacement_string_start; |
4359 | char *displacement_string_end; | |
252b5132 | 4360 | |
24eab124 | 4361 | do_memory_reference: |
24eab124 AM |
4362 | if ((i.mem_operands == 1 |
4363 | && (current_templates->start->opcode_modifier & IsString) == 0) | |
4364 | || i.mem_operands == 2) | |
4365 | { | |
4366 | as_bad (_("too many memory references for `%s'"), | |
4367 | current_templates->start->name); | |
4368 | return 0; | |
4369 | } | |
252b5132 | 4370 | |
24eab124 AM |
4371 | /* Check for base index form. We detect the base index form by |
4372 | looking for an ')' at the end of the operand, searching | |
4373 | for the '(' matching it, and finding a REGISTER_PREFIX or ',' | |
4374 | after the '('. */ | |
af6bdddf | 4375 | base_string = op_string + strlen (op_string); |
c3332e24 | 4376 | |
af6bdddf AM |
4377 | --base_string; |
4378 | if (is_space_char (*base_string)) | |
4379 | --base_string; | |
252b5132 | 4380 | |
47926f60 | 4381 | /* If we only have a displacement, set-up for it to be parsed later. */ |
af6bdddf AM |
4382 | displacement_string_start = op_string; |
4383 | displacement_string_end = base_string + 1; | |
252b5132 | 4384 | |
24eab124 AM |
4385 | if (*base_string == ')') |
4386 | { | |
af6bdddf | 4387 | char *temp_string; |
24eab124 AM |
4388 | unsigned int parens_balanced = 1; |
4389 | /* We've already checked that the number of left & right ()'s are | |
47926f60 | 4390 | equal, so this loop will not be infinite. */ |
24eab124 AM |
4391 | do |
4392 | { | |
4393 | base_string--; | |
4394 | if (*base_string == ')') | |
4395 | parens_balanced++; | |
4396 | if (*base_string == '(') | |
4397 | parens_balanced--; | |
4398 | } | |
4399 | while (parens_balanced); | |
c3332e24 | 4400 | |
af6bdddf | 4401 | temp_string = base_string; |
c3332e24 | 4402 | |
24eab124 | 4403 | /* Skip past '(' and whitespace. */ |
252b5132 RH |
4404 | ++base_string; |
4405 | if (is_space_char (*base_string)) | |
24eab124 | 4406 | ++base_string; |
252b5132 | 4407 | |
af6bdddf AM |
4408 | if (*base_string == ',' |
4409 | || ((*base_string == REGISTER_PREFIX || allow_naked_reg) | |
4410 | && (i.base_reg = parse_register (base_string, &end_op)) != NULL)) | |
252b5132 | 4411 | { |
af6bdddf | 4412 | displacement_string_end = temp_string; |
252b5132 | 4413 | |
af6bdddf | 4414 | i.types[this_operand] |= BaseIndex; |
252b5132 | 4415 | |
af6bdddf | 4416 | if (i.base_reg) |
24eab124 | 4417 | { |
24eab124 AM |
4418 | base_string = end_op; |
4419 | if (is_space_char (*base_string)) | |
4420 | ++base_string; | |
af6bdddf AM |
4421 | } |
4422 | ||
4423 | /* There may be an index reg or scale factor here. */ | |
4424 | if (*base_string == ',') | |
4425 | { | |
4426 | ++base_string; | |
4427 | if (is_space_char (*base_string)) | |
4428 | ++base_string; | |
4429 | ||
4430 | if ((*base_string == REGISTER_PREFIX || allow_naked_reg) | |
4431 | && (i.index_reg = parse_register (base_string, &end_op)) != NULL) | |
24eab124 | 4432 | { |
af6bdddf | 4433 | base_string = end_op; |
24eab124 AM |
4434 | if (is_space_char (*base_string)) |
4435 | ++base_string; | |
af6bdddf AM |
4436 | if (*base_string == ',') |
4437 | { | |
4438 | ++base_string; | |
4439 | if (is_space_char (*base_string)) | |
4440 | ++base_string; | |
4441 | } | |
e5cb08ac | 4442 | else if (*base_string != ')') |
af6bdddf AM |
4443 | { |
4444 | as_bad (_("expecting `,' or `)' after index register in `%s'"), | |
4445 | operand_string); | |
4446 | return 0; | |
4447 | } | |
24eab124 | 4448 | } |
af6bdddf | 4449 | else if (*base_string == REGISTER_PREFIX) |
24eab124 | 4450 | { |
af6bdddf | 4451 | as_bad (_("bad register name `%s'"), base_string); |
24eab124 AM |
4452 | return 0; |
4453 | } | |
252b5132 | 4454 | |
47926f60 | 4455 | /* Check for scale factor. */ |
551c1ca1 | 4456 | if (*base_string != ')') |
af6bdddf | 4457 | { |
551c1ca1 AM |
4458 | char *end_scale = i386_scale (base_string); |
4459 | ||
4460 | if (!end_scale) | |
af6bdddf | 4461 | return 0; |
24eab124 | 4462 | |
551c1ca1 | 4463 | base_string = end_scale; |
af6bdddf AM |
4464 | if (is_space_char (*base_string)) |
4465 | ++base_string; | |
4466 | if (*base_string != ')') | |
4467 | { | |
4468 | as_bad (_("expecting `)' after scale factor in `%s'"), | |
4469 | operand_string); | |
4470 | return 0; | |
4471 | } | |
4472 | } | |
4473 | else if (!i.index_reg) | |
24eab124 | 4474 | { |
af6bdddf AM |
4475 | as_bad (_("expecting index register or scale factor after `,'; got '%c'"), |
4476 | *base_string); | |
24eab124 AM |
4477 | return 0; |
4478 | } | |
4479 | } | |
af6bdddf | 4480 | else if (*base_string != ')') |
24eab124 | 4481 | { |
af6bdddf AM |
4482 | as_bad (_("expecting `,' or `)' after base register in `%s'"), |
4483 | operand_string); | |
24eab124 AM |
4484 | return 0; |
4485 | } | |
c3332e24 | 4486 | } |
af6bdddf | 4487 | else if (*base_string == REGISTER_PREFIX) |
c3332e24 | 4488 | { |
af6bdddf | 4489 | as_bad (_("bad register name `%s'"), base_string); |
24eab124 | 4490 | return 0; |
c3332e24 | 4491 | } |
24eab124 AM |
4492 | } |
4493 | ||
4494 | /* If there's an expression beginning the operand, parse it, | |
4495 | assuming displacement_string_start and | |
4496 | displacement_string_end are meaningful. */ | |
4497 | if (displacement_string_start != displacement_string_end) | |
4498 | { | |
4499 | if (!i386_displacement (displacement_string_start, | |
4500 | displacement_string_end)) | |
4501 | return 0; | |
4502 | } | |
4503 | ||
4504 | /* Special case for (%dx) while doing input/output op. */ | |
4505 | if (i.base_reg | |
4506 | && i.base_reg->reg_type == (Reg16 | InOutPortReg) | |
4507 | && i.index_reg == 0 | |
4508 | && i.log2_scale_factor == 0 | |
4509 | && i.seg[i.mem_operands] == 0 | |
4510 | && (i.types[this_operand] & Disp) == 0) | |
4511 | { | |
4512 | i.types[this_operand] = InOutPortReg; | |
4513 | return 1; | |
4514 | } | |
4515 | ||
eecb386c AM |
4516 | if (i386_index_check (operand_string) == 0) |
4517 | return 0; | |
24eab124 AM |
4518 | i.mem_operands++; |
4519 | } | |
4520 | else | |
ce8a8b2f AM |
4521 | { |
4522 | /* It's not a memory operand; argh! */ | |
24eab124 AM |
4523 | as_bad (_("invalid char %s beginning operand %d `%s'"), |
4524 | output_invalid (*op_string), | |
4525 | this_operand + 1, | |
4526 | op_string); | |
4527 | return 0; | |
4528 | } | |
47926f60 | 4529 | return 1; /* Normal return. */ |
252b5132 RH |
4530 | } |
4531 | \f | |
ee7fcc42 AM |
4532 | /* md_estimate_size_before_relax() |
4533 | ||
4534 | Called just before relax() for rs_machine_dependent frags. The x86 | |
4535 | assembler uses these frags to handle variable size jump | |
4536 | instructions. | |
4537 | ||
4538 | Any symbol that is now undefined will not become defined. | |
4539 | Return the correct fr_subtype in the frag. | |
4540 | Return the initial "guess for variable size of frag" to caller. | |
4541 | The guess is actually the growth beyond the fixed part. Whatever | |
4542 | we do to grow the fixed or variable part contributes to our | |
4543 | returned value. */ | |
4544 | ||
252b5132 RH |
4545 | int |
4546 | md_estimate_size_before_relax (fragP, segment) | |
29b0f896 AM |
4547 | fragS *fragP; |
4548 | segT segment; | |
252b5132 | 4549 | { |
252b5132 | 4550 | /* We've already got fragP->fr_subtype right; all we have to do is |
b98ef147 AM |
4551 | check for un-relaxable symbols. On an ELF system, we can't relax |
4552 | an externally visible symbol, because it may be overridden by a | |
4553 | shared library. */ | |
4554 | if (S_GET_SEGMENT (fragP->fr_symbol) != segment | |
6d249963 | 4555 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
31312f95 AM |
4556 | || (OUTPUT_FLAVOR == bfd_target_elf_flavour |
4557 | && (S_IS_EXTERNAL (fragP->fr_symbol) | |
4558 | || S_IS_WEAK (fragP->fr_symbol))) | |
b98ef147 AM |
4559 | #endif |
4560 | ) | |
252b5132 | 4561 | { |
b98ef147 AM |
4562 | /* Symbol is undefined in this segment, or we need to keep a |
4563 | reloc so that weak symbols can be overridden. */ | |
4564 | int size = (fragP->fr_subtype & CODE16) ? 2 : 4; | |
f86103b7 | 4565 | enum bfd_reloc_code_real reloc_type; |
ee7fcc42 AM |
4566 | unsigned char *opcode; |
4567 | int old_fr_fix; | |
f6af82bd | 4568 | |
ee7fcc42 AM |
4569 | if (fragP->fr_var != NO_RELOC) |
4570 | reloc_type = fragP->fr_var; | |
b98ef147 | 4571 | else if (size == 2) |
f6af82bd AM |
4572 | reloc_type = BFD_RELOC_16_PCREL; |
4573 | else | |
4574 | reloc_type = BFD_RELOC_32_PCREL; | |
252b5132 | 4575 | |
ee7fcc42 AM |
4576 | old_fr_fix = fragP->fr_fix; |
4577 | opcode = (unsigned char *) fragP->fr_opcode; | |
4578 | ||
fddf5b5b | 4579 | switch (TYPE_FROM_RELAX_STATE (fragP->fr_subtype)) |
252b5132 | 4580 | { |
fddf5b5b AM |
4581 | case UNCOND_JUMP: |
4582 | /* Make jmp (0xeb) a (d)word displacement jump. */ | |
47926f60 | 4583 | opcode[0] = 0xe9; |
252b5132 | 4584 | fragP->fr_fix += size; |
062cd5e7 AS |
4585 | fix_new (fragP, old_fr_fix, size, |
4586 | fragP->fr_symbol, | |
4587 | fragP->fr_offset, 1, | |
4588 | reloc_type); | |
252b5132 RH |
4589 | break; |
4590 | ||
fddf5b5b | 4591 | case COND_JUMP86: |
412167cb AM |
4592 | if (size == 2 |
4593 | && (!no_cond_jump_promotion || fragP->fr_var != NO_RELOC)) | |
fddf5b5b AM |
4594 | { |
4595 | /* Negate the condition, and branch past an | |
4596 | unconditional jump. */ | |
4597 | opcode[0] ^= 1; | |
4598 | opcode[1] = 3; | |
4599 | /* Insert an unconditional jump. */ | |
4600 | opcode[2] = 0xe9; | |
4601 | /* We added two extra opcode bytes, and have a two byte | |
4602 | offset. */ | |
4603 | fragP->fr_fix += 2 + 2; | |
062cd5e7 AS |
4604 | fix_new (fragP, old_fr_fix + 2, 2, |
4605 | fragP->fr_symbol, | |
4606 | fragP->fr_offset, 1, | |
4607 | reloc_type); | |
fddf5b5b AM |
4608 | break; |
4609 | } | |
4610 | /* Fall through. */ | |
4611 | ||
4612 | case COND_JUMP: | |
412167cb AM |
4613 | if (no_cond_jump_promotion && fragP->fr_var == NO_RELOC) |
4614 | { | |
3e02c1cc AM |
4615 | fixS *fixP; |
4616 | ||
412167cb | 4617 | fragP->fr_fix += 1; |
3e02c1cc AM |
4618 | fixP = fix_new (fragP, old_fr_fix, 1, |
4619 | fragP->fr_symbol, | |
4620 | fragP->fr_offset, 1, | |
4621 | BFD_RELOC_8_PCREL); | |
4622 | fixP->fx_signed = 1; | |
412167cb AM |
4623 | break; |
4624 | } | |
93c2a809 | 4625 | |
24eab124 | 4626 | /* This changes the byte-displacement jump 0x7N |
fddf5b5b | 4627 | to the (d)word-displacement jump 0x0f,0x8N. */ |
252b5132 | 4628 | opcode[1] = opcode[0] + 0x10; |
f6af82bd | 4629 | opcode[0] = TWO_BYTE_OPCODE_ESCAPE; |
47926f60 KH |
4630 | /* We've added an opcode byte. */ |
4631 | fragP->fr_fix += 1 + size; | |
062cd5e7 AS |
4632 | fix_new (fragP, old_fr_fix + 1, size, |
4633 | fragP->fr_symbol, | |
4634 | fragP->fr_offset, 1, | |
4635 | reloc_type); | |
252b5132 | 4636 | break; |
fddf5b5b AM |
4637 | |
4638 | default: | |
4639 | BAD_CASE (fragP->fr_subtype); | |
4640 | break; | |
252b5132 RH |
4641 | } |
4642 | frag_wane (fragP); | |
ee7fcc42 | 4643 | return fragP->fr_fix - old_fr_fix; |
252b5132 | 4644 | } |
93c2a809 | 4645 | |
93c2a809 AM |
4646 | /* Guess size depending on current relax state. Initially the relax |
4647 | state will correspond to a short jump and we return 1, because | |
4648 | the variable part of the frag (the branch offset) is one byte | |
4649 | long. However, we can relax a section more than once and in that | |
4650 | case we must either set fr_subtype back to the unrelaxed state, | |
4651 | or return the value for the appropriate branch. */ | |
4652 | return md_relax_table[fragP->fr_subtype].rlx_length; | |
ee7fcc42 AM |
4653 | } |
4654 | ||
47926f60 KH |
4655 | /* Called after relax() is finished. |
4656 | ||
4657 | In: Address of frag. | |
4658 | fr_type == rs_machine_dependent. | |
4659 | fr_subtype is what the address relaxed to. | |
4660 | ||
4661 | Out: Any fixSs and constants are set up. | |
4662 | Caller will turn frag into a ".space 0". */ | |
4663 | ||
252b5132 RH |
4664 | void |
4665 | md_convert_frag (abfd, sec, fragP) | |
ab9da554 ILT |
4666 | bfd *abfd ATTRIBUTE_UNUSED; |
4667 | segT sec ATTRIBUTE_UNUSED; | |
29b0f896 | 4668 | fragS *fragP; |
252b5132 | 4669 | { |
29b0f896 | 4670 | unsigned char *opcode; |
252b5132 | 4671 | unsigned char *where_to_put_displacement = NULL; |
847f7ad4 AM |
4672 | offsetT target_address; |
4673 | offsetT opcode_address; | |
252b5132 | 4674 | unsigned int extension = 0; |
847f7ad4 | 4675 | offsetT displacement_from_opcode_start; |
252b5132 RH |
4676 | |
4677 | opcode = (unsigned char *) fragP->fr_opcode; | |
4678 | ||
47926f60 | 4679 | /* Address we want to reach in file space. */ |
252b5132 | 4680 | target_address = S_GET_VALUE (fragP->fr_symbol) + fragP->fr_offset; |
252b5132 | 4681 | |
47926f60 | 4682 | /* Address opcode resides at in file space. */ |
252b5132 RH |
4683 | opcode_address = fragP->fr_address + fragP->fr_fix; |
4684 | ||
47926f60 | 4685 | /* Displacement from opcode start to fill into instruction. */ |
252b5132 RH |
4686 | displacement_from_opcode_start = target_address - opcode_address; |
4687 | ||
fddf5b5b | 4688 | if ((fragP->fr_subtype & BIG) == 0) |
252b5132 | 4689 | { |
47926f60 KH |
4690 | /* Don't have to change opcode. */ |
4691 | extension = 1; /* 1 opcode + 1 displacement */ | |
252b5132 | 4692 | where_to_put_displacement = &opcode[1]; |
fddf5b5b AM |
4693 | } |
4694 | else | |
4695 | { | |
4696 | if (no_cond_jump_promotion | |
4697 | && TYPE_FROM_RELAX_STATE (fragP->fr_subtype) != UNCOND_JUMP) | |
4698 | as_warn_where (fragP->fr_file, fragP->fr_line, _("long jump required")); | |
252b5132 | 4699 | |
fddf5b5b AM |
4700 | switch (fragP->fr_subtype) |
4701 | { | |
4702 | case ENCODE_RELAX_STATE (UNCOND_JUMP, BIG): | |
4703 | extension = 4; /* 1 opcode + 4 displacement */ | |
4704 | opcode[0] = 0xe9; | |
4705 | where_to_put_displacement = &opcode[1]; | |
4706 | break; | |
252b5132 | 4707 | |
fddf5b5b AM |
4708 | case ENCODE_RELAX_STATE (UNCOND_JUMP, BIG16): |
4709 | extension = 2; /* 1 opcode + 2 displacement */ | |
4710 | opcode[0] = 0xe9; | |
4711 | where_to_put_displacement = &opcode[1]; | |
4712 | break; | |
252b5132 | 4713 | |
fddf5b5b AM |
4714 | case ENCODE_RELAX_STATE (COND_JUMP, BIG): |
4715 | case ENCODE_RELAX_STATE (COND_JUMP86, BIG): | |
4716 | extension = 5; /* 2 opcode + 4 displacement */ | |
4717 | opcode[1] = opcode[0] + 0x10; | |
4718 | opcode[0] = TWO_BYTE_OPCODE_ESCAPE; | |
4719 | where_to_put_displacement = &opcode[2]; | |
4720 | break; | |
252b5132 | 4721 | |
fddf5b5b AM |
4722 | case ENCODE_RELAX_STATE (COND_JUMP, BIG16): |
4723 | extension = 3; /* 2 opcode + 2 displacement */ | |
4724 | opcode[1] = opcode[0] + 0x10; | |
4725 | opcode[0] = TWO_BYTE_OPCODE_ESCAPE; | |
4726 | where_to_put_displacement = &opcode[2]; | |
4727 | break; | |
252b5132 | 4728 | |
fddf5b5b AM |
4729 | case ENCODE_RELAX_STATE (COND_JUMP86, BIG16): |
4730 | extension = 4; | |
4731 | opcode[0] ^= 1; | |
4732 | opcode[1] = 3; | |
4733 | opcode[2] = 0xe9; | |
4734 | where_to_put_displacement = &opcode[3]; | |
4735 | break; | |
4736 | ||
4737 | default: | |
4738 | BAD_CASE (fragP->fr_subtype); | |
4739 | break; | |
4740 | } | |
252b5132 | 4741 | } |
fddf5b5b | 4742 | |
47926f60 | 4743 | /* Now put displacement after opcode. */ |
252b5132 RH |
4744 | md_number_to_chars ((char *) where_to_put_displacement, |
4745 | (valueT) (displacement_from_opcode_start - extension), | |
fddf5b5b | 4746 | DISP_SIZE_FROM_RELAX_STATE (fragP->fr_subtype)); |
252b5132 RH |
4747 | fragP->fr_fix += extension; |
4748 | } | |
4749 | \f | |
47926f60 KH |
4750 | /* Size of byte displacement jmp. */ |
4751 | int md_short_jump_size = 2; | |
4752 | ||
4753 | /* Size of dword displacement jmp. */ | |
4754 | int md_long_jump_size = 5; | |
252b5132 | 4755 | |
47926f60 KH |
4756 | /* Size of relocation record. */ |
4757 | const int md_reloc_size = 8; | |
252b5132 RH |
4758 | |
4759 | void | |
4760 | md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
4761 | char *ptr; | |
4762 | addressT from_addr, to_addr; | |
ab9da554 ILT |
4763 | fragS *frag ATTRIBUTE_UNUSED; |
4764 | symbolS *to_symbol ATTRIBUTE_UNUSED; | |
252b5132 | 4765 | { |
847f7ad4 | 4766 | offsetT offset; |
252b5132 RH |
4767 | |
4768 | offset = to_addr - (from_addr + 2); | |
47926f60 KH |
4769 | /* Opcode for byte-disp jump. */ |
4770 | md_number_to_chars (ptr, (valueT) 0xeb, 1); | |
252b5132 RH |
4771 | md_number_to_chars (ptr + 1, (valueT) offset, 1); |
4772 | } | |
4773 | ||
4774 | void | |
4775 | md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol) | |
4776 | char *ptr; | |
4777 | addressT from_addr, to_addr; | |
a38cf1db AM |
4778 | fragS *frag ATTRIBUTE_UNUSED; |
4779 | symbolS *to_symbol ATTRIBUTE_UNUSED; | |
252b5132 | 4780 | { |
847f7ad4 | 4781 | offsetT offset; |
252b5132 | 4782 | |
a38cf1db AM |
4783 | offset = to_addr - (from_addr + 5); |
4784 | md_number_to_chars (ptr, (valueT) 0xe9, 1); | |
4785 | md_number_to_chars (ptr + 1, (valueT) offset, 4); | |
252b5132 RH |
4786 | } |
4787 | \f | |
4788 | /* Apply a fixup (fixS) to segment data, once it has been determined | |
4789 | by our caller that we have all the info we need to fix it up. | |
4790 | ||
4791 | On the 386, immediates, displacements, and data pointers are all in | |
4792 | the same (little-endian) format, so we don't need to care about which | |
4793 | we are handling. */ | |
4794 | ||
94f592af NC |
4795 | void |
4796 | md_apply_fix3 (fixP, valP, seg) | |
47926f60 KH |
4797 | /* The fix we're to put in. */ |
4798 | fixS *fixP; | |
47926f60 | 4799 | /* Pointer to the value of the bits. */ |
c6682705 | 4800 | valueT *valP; |
47926f60 KH |
4801 | /* Segment fix is from. */ |
4802 | segT seg ATTRIBUTE_UNUSED; | |
252b5132 | 4803 | { |
94f592af | 4804 | char *p = fixP->fx_where + fixP->fx_frag->fr_literal; |
c6682705 | 4805 | valueT value = *valP; |
252b5132 | 4806 | |
f86103b7 | 4807 | #if !defined (TE_Mach) |
93382f6d AM |
4808 | if (fixP->fx_pcrel) |
4809 | { | |
4810 | switch (fixP->fx_r_type) | |
4811 | { | |
5865bb77 ILT |
4812 | default: |
4813 | break; | |
4814 | ||
93382f6d | 4815 | case BFD_RELOC_32: |
ae8887b5 | 4816 | case BFD_RELOC_X86_64_32S: |
93382f6d AM |
4817 | fixP->fx_r_type = BFD_RELOC_32_PCREL; |
4818 | break; | |
4819 | case BFD_RELOC_16: | |
4820 | fixP->fx_r_type = BFD_RELOC_16_PCREL; | |
4821 | break; | |
4822 | case BFD_RELOC_8: | |
4823 | fixP->fx_r_type = BFD_RELOC_8_PCREL; | |
4824 | break; | |
4825 | } | |
4826 | } | |
252b5132 | 4827 | |
a161fe53 | 4828 | if (fixP->fx_addsy != NULL |
31312f95 AM |
4829 | && (fixP->fx_r_type == BFD_RELOC_32_PCREL |
4830 | || fixP->fx_r_type == BFD_RELOC_16_PCREL | |
4831 | || fixP->fx_r_type == BFD_RELOC_8_PCREL) | |
4832 | && !use_rela_relocations) | |
252b5132 | 4833 | { |
31312f95 AM |
4834 | /* This is a hack. There should be a better way to handle this. |
4835 | This covers for the fact that bfd_install_relocation will | |
4836 | subtract the current location (for partial_inplace, PC relative | |
4837 | relocations); see more below. */ | |
252b5132 RH |
4838 | #ifndef OBJ_AOUT |
4839 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour | |
4840 | #ifdef TE_PE | |
4841 | || OUTPUT_FLAVOR == bfd_target_coff_flavour | |
4842 | #endif | |
4843 | ) | |
4844 | value += fixP->fx_where + fixP->fx_frag->fr_address; | |
4845 | #endif | |
4846 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
2f66722d | 4847 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour) |
252b5132 | 4848 | { |
6539b54b | 4849 | segT sym_seg = S_GET_SEGMENT (fixP->fx_addsy); |
2f66722d | 4850 | |
6539b54b | 4851 | if ((sym_seg == seg |
2f66722d | 4852 | || (symbol_section_p (fixP->fx_addsy) |
6539b54b | 4853 | && sym_seg != absolute_section)) |
ae6063d4 | 4854 | && !generic_force_reloc (fixP)) |
2f66722d AM |
4855 | { |
4856 | /* Yes, we add the values in twice. This is because | |
6539b54b AM |
4857 | bfd_install_relocation subtracts them out again. I think |
4858 | bfd_install_relocation is broken, but I don't dare change | |
2f66722d AM |
4859 | it. FIXME. */ |
4860 | value += fixP->fx_where + fixP->fx_frag->fr_address; | |
4861 | } | |
252b5132 RH |
4862 | } |
4863 | #endif | |
4864 | #if defined (OBJ_COFF) && defined (TE_PE) | |
977cdf5a NC |
4865 | /* For some reason, the PE format does not store a |
4866 | section address offset for a PC relative symbol. */ | |
4867 | if (S_GET_SEGMENT (fixP->fx_addsy) != seg | |
4868 | #if defined(BFD_ASSEMBLER) || defined(S_IS_WEAK) | |
4869 | || S_IS_WEAK (fixP->fx_addsy) | |
4870 | #endif | |
4871 | ) | |
252b5132 RH |
4872 | value += md_pcrel_from (fixP); |
4873 | #endif | |
4874 | } | |
4875 | ||
4876 | /* Fix a few things - the dynamic linker expects certain values here, | |
0234cb7c | 4877 | and we must not disappoint it. */ |
252b5132 RH |
4878 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
4879 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour | |
4880 | && fixP->fx_addsy) | |
47926f60 KH |
4881 | switch (fixP->fx_r_type) |
4882 | { | |
4883 | case BFD_RELOC_386_PLT32: | |
3e73aa7c | 4884 | case BFD_RELOC_X86_64_PLT32: |
47926f60 KH |
4885 | /* Make the jump instruction point to the address of the operand. At |
4886 | runtime we merely add the offset to the actual PLT entry. */ | |
4887 | value = -4; | |
4888 | break; | |
31312f95 | 4889 | |
13ae64f3 JJ |
4890 | case BFD_RELOC_386_TLS_GD: |
4891 | case BFD_RELOC_386_TLS_LDM: | |
13ae64f3 | 4892 | case BFD_RELOC_386_TLS_IE_32: |
37e55690 JJ |
4893 | case BFD_RELOC_386_TLS_IE: |
4894 | case BFD_RELOC_386_TLS_GOTIE: | |
bffbf940 JJ |
4895 | case BFD_RELOC_X86_64_TLSGD: |
4896 | case BFD_RELOC_X86_64_TLSLD: | |
4897 | case BFD_RELOC_X86_64_GOTTPOFF: | |
00f7efb6 JJ |
4898 | value = 0; /* Fully resolved at runtime. No addend. */ |
4899 | /* Fallthrough */ | |
4900 | case BFD_RELOC_386_TLS_LE: | |
4901 | case BFD_RELOC_386_TLS_LDO_32: | |
4902 | case BFD_RELOC_386_TLS_LE_32: | |
4903 | case BFD_RELOC_X86_64_DTPOFF32: | |
4904 | case BFD_RELOC_X86_64_TPOFF32: | |
4905 | S_SET_THREAD_LOCAL (fixP->fx_addsy); | |
4906 | break; | |
4907 | ||
4908 | case BFD_RELOC_386_GOT32: | |
4909 | case BFD_RELOC_X86_64_GOT32: | |
47926f60 KH |
4910 | value = 0; /* Fully resolved at runtime. No addend. */ |
4911 | break; | |
47926f60 KH |
4912 | |
4913 | case BFD_RELOC_VTABLE_INHERIT: | |
4914 | case BFD_RELOC_VTABLE_ENTRY: | |
4915 | fixP->fx_done = 0; | |
94f592af | 4916 | return; |
47926f60 KH |
4917 | |
4918 | default: | |
4919 | break; | |
4920 | } | |
4921 | #endif /* defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) */ | |
c6682705 | 4922 | *valP = value; |
f86103b7 | 4923 | #endif /* !defined (TE_Mach) */ |
3e73aa7c | 4924 | |
3e73aa7c | 4925 | /* Are we finished with this relocation now? */ |
c6682705 | 4926 | if (fixP->fx_addsy == NULL) |
3e73aa7c JH |
4927 | fixP->fx_done = 1; |
4928 | else if (use_rela_relocations) | |
4929 | { | |
4930 | fixP->fx_no_overflow = 1; | |
062cd5e7 AS |
4931 | /* Remember value for tc_gen_reloc. */ |
4932 | fixP->fx_addnumber = value; | |
3e73aa7c JH |
4933 | value = 0; |
4934 | } | |
f86103b7 | 4935 | |
94f592af | 4936 | md_number_to_chars (p, value, fixP->fx_size); |
252b5132 | 4937 | } |
252b5132 | 4938 | \f |
252b5132 RH |
4939 | #define MAX_LITTLENUMS 6 |
4940 | ||
47926f60 KH |
4941 | /* Turn the string pointed to by litP into a floating point constant |
4942 | of type TYPE, and emit the appropriate bytes. The number of | |
4943 | LITTLENUMS emitted is stored in *SIZEP. An error message is | |
4944 | returned, or NULL on OK. */ | |
4945 | ||
252b5132 RH |
4946 | char * |
4947 | md_atof (type, litP, sizeP) | |
2ab9b79e | 4948 | int type; |
252b5132 RH |
4949 | char *litP; |
4950 | int *sizeP; | |
4951 | { | |
4952 | int prec; | |
4953 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
4954 | LITTLENUM_TYPE *wordP; | |
4955 | char *t; | |
4956 | ||
4957 | switch (type) | |
4958 | { | |
4959 | case 'f': | |
4960 | case 'F': | |
4961 | prec = 2; | |
4962 | break; | |
4963 | ||
4964 | case 'd': | |
4965 | case 'D': | |
4966 | prec = 4; | |
4967 | break; | |
4968 | ||
4969 | case 'x': | |
4970 | case 'X': | |
4971 | prec = 5; | |
4972 | break; | |
4973 | ||
4974 | default: | |
4975 | *sizeP = 0; | |
4976 | return _("Bad call to md_atof ()"); | |
4977 | } | |
4978 | t = atof_ieee (input_line_pointer, type, words); | |
4979 | if (t) | |
4980 | input_line_pointer = t; | |
4981 | ||
4982 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
4983 | /* This loops outputs the LITTLENUMs in REVERSE order; in accord with | |
4984 | the bigendian 386. */ | |
4985 | for (wordP = words + prec - 1; prec--;) | |
4986 | { | |
4987 | md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE)); | |
4988 | litP += sizeof (LITTLENUM_TYPE); | |
4989 | } | |
4990 | return 0; | |
4991 | } | |
4992 | \f | |
87c245cc | 4993 | static char output_invalid_buf[8]; |
252b5132 | 4994 | |
252b5132 RH |
4995 | static char * |
4996 | output_invalid (c) | |
4997 | int c; | |
4998 | { | |
3882b010 | 4999 | if (ISPRINT (c)) |
252b5132 RH |
5000 | sprintf (output_invalid_buf, "'%c'", c); |
5001 | else | |
5002 | sprintf (output_invalid_buf, "(0x%x)", (unsigned) c); | |
5003 | return output_invalid_buf; | |
5004 | } | |
5005 | ||
af6bdddf | 5006 | /* REG_STRING starts *before* REGISTER_PREFIX. */ |
252b5132 RH |
5007 | |
5008 | static const reg_entry * | |
5009 | parse_register (reg_string, end_op) | |
5010 | char *reg_string; | |
5011 | char **end_op; | |
5012 | { | |
af6bdddf AM |
5013 | char *s = reg_string; |
5014 | char *p; | |
252b5132 RH |
5015 | char reg_name_given[MAX_REG_NAME_SIZE + 1]; |
5016 | const reg_entry *r; | |
5017 | ||
5018 | /* Skip possible REGISTER_PREFIX and possible whitespace. */ | |
5019 | if (*s == REGISTER_PREFIX) | |
5020 | ++s; | |
5021 | ||
5022 | if (is_space_char (*s)) | |
5023 | ++s; | |
5024 | ||
5025 | p = reg_name_given; | |
af6bdddf | 5026 | while ((*p++ = register_chars[(unsigned char) *s]) != '\0') |
252b5132 RH |
5027 | { |
5028 | if (p >= reg_name_given + MAX_REG_NAME_SIZE) | |
af6bdddf AM |
5029 | return (const reg_entry *) NULL; |
5030 | s++; | |
252b5132 RH |
5031 | } |
5032 | ||
6588847e DN |
5033 | /* For naked regs, make sure that we are not dealing with an identifier. |
5034 | This prevents confusing an identifier like `eax_var' with register | |
5035 | `eax'. */ | |
5036 | if (allow_naked_reg && identifier_chars[(unsigned char) *s]) | |
5037 | return (const reg_entry *) NULL; | |
5038 | ||
af6bdddf | 5039 | *end_op = s; |
252b5132 RH |
5040 | |
5041 | r = (const reg_entry *) hash_find (reg_hash, reg_name_given); | |
5042 | ||
5f47d35b | 5043 | /* Handle floating point regs, allowing spaces in the (i) part. */ |
47926f60 | 5044 | if (r == i386_regtab /* %st is first entry of table */) |
5f47d35b | 5045 | { |
5f47d35b AM |
5046 | if (is_space_char (*s)) |
5047 | ++s; | |
5048 | if (*s == '(') | |
5049 | { | |
af6bdddf | 5050 | ++s; |
5f47d35b AM |
5051 | if (is_space_char (*s)) |
5052 | ++s; | |
5053 | if (*s >= '0' && *s <= '7') | |
5054 | { | |
5055 | r = &i386_float_regtab[*s - '0']; | |
af6bdddf | 5056 | ++s; |
5f47d35b AM |
5057 | if (is_space_char (*s)) |
5058 | ++s; | |
5059 | if (*s == ')') | |
5060 | { | |
5061 | *end_op = s + 1; | |
5062 | return r; | |
5063 | } | |
5f47d35b | 5064 | } |
47926f60 | 5065 | /* We have "%st(" then garbage. */ |
5f47d35b AM |
5066 | return (const reg_entry *) NULL; |
5067 | } | |
5068 | } | |
5069 | ||
1ae00879 | 5070 | if (r != NULL |
20f0a1fc | 5071 | && ((r->reg_flags & (RegRex64 | RegRex)) | (r->reg_type & Reg64)) != 0 |
c4a530c5 | 5072 | && (r->reg_type != Control || !(cpu_arch_flags & CpuSledgehammer)) |
1ae00879 | 5073 | && flag_code != CODE_64BIT) |
20f0a1fc | 5074 | return (const reg_entry *) NULL; |
1ae00879 | 5075 | |
252b5132 RH |
5076 | return r; |
5077 | } | |
5078 | \f | |
4cc782b5 | 5079 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
12b55ccc | 5080 | const char *md_shortopts = "kVQ:sqn"; |
252b5132 | 5081 | #else |
12b55ccc | 5082 | const char *md_shortopts = "qn"; |
252b5132 | 5083 | #endif |
6e0b89ee | 5084 | |
252b5132 | 5085 | struct option md_longopts[] = { |
3e73aa7c JH |
5086 | #define OPTION_32 (OPTION_MD_BASE + 0) |
5087 | {"32", no_argument, NULL, OPTION_32}, | |
6e0b89ee | 5088 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3e73aa7c JH |
5089 | #define OPTION_64 (OPTION_MD_BASE + 1) |
5090 | {"64", no_argument, NULL, OPTION_64}, | |
6e0b89ee | 5091 | #endif |
252b5132 RH |
5092 | {NULL, no_argument, NULL, 0} |
5093 | }; | |
5094 | size_t md_longopts_size = sizeof (md_longopts); | |
5095 | ||
5096 | int | |
5097 | md_parse_option (c, arg) | |
5098 | int c; | |
ab9da554 | 5099 | char *arg ATTRIBUTE_UNUSED; |
252b5132 RH |
5100 | { |
5101 | switch (c) | |
5102 | { | |
12b55ccc L |
5103 | case 'n': |
5104 | optimize_align_code = 0; | |
5105 | break; | |
5106 | ||
a38cf1db AM |
5107 | case 'q': |
5108 | quiet_warnings = 1; | |
252b5132 RH |
5109 | break; |
5110 | ||
5111 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
a38cf1db AM |
5112 | /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section |
5113 | should be emitted or not. FIXME: Not implemented. */ | |
5114 | case 'Q': | |
252b5132 RH |
5115 | break; |
5116 | ||
5117 | /* -V: SVR4 argument to print version ID. */ | |
5118 | case 'V': | |
5119 | print_version_id (); | |
5120 | break; | |
5121 | ||
a38cf1db AM |
5122 | /* -k: Ignore for FreeBSD compatibility. */ |
5123 | case 'k': | |
252b5132 | 5124 | break; |
4cc782b5 ILT |
5125 | |
5126 | case 's': | |
5127 | /* -s: On i386 Solaris, this tells the native assembler to use | |
29b0f896 | 5128 | .stab instead of .stab.excl. We always use .stab anyhow. */ |
4cc782b5 | 5129 | break; |
6e0b89ee | 5130 | |
3e73aa7c JH |
5131 | case OPTION_64: |
5132 | { | |
5133 | const char **list, **l; | |
5134 | ||
3e73aa7c JH |
5135 | list = bfd_target_list (); |
5136 | for (l = list; *l != NULL; l++) | |
6e0b89ee AM |
5137 | if (strcmp (*l, "elf64-x86-64") == 0) |
5138 | { | |
5139 | default_arch = "x86_64"; | |
5140 | break; | |
5141 | } | |
3e73aa7c | 5142 | if (*l == NULL) |
6e0b89ee | 5143 | as_fatal (_("No compiled in support for x86_64")); |
3e73aa7c JH |
5144 | free (list); |
5145 | } | |
5146 | break; | |
5147 | #endif | |
252b5132 | 5148 | |
6e0b89ee AM |
5149 | case OPTION_32: |
5150 | default_arch = "i386"; | |
5151 | break; | |
5152 | ||
252b5132 RH |
5153 | default: |
5154 | return 0; | |
5155 | } | |
5156 | return 1; | |
5157 | } | |
5158 | ||
5159 | void | |
5160 | md_show_usage (stream) | |
5161 | FILE *stream; | |
5162 | { | |
4cc782b5 ILT |
5163 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
5164 | fprintf (stream, _("\ | |
a38cf1db AM |
5165 | -Q ignored\n\ |
5166 | -V print assembler version number\n\ | |
5167 | -k ignored\n\ | |
12b55ccc | 5168 | -n Do not optimize code alignment\n\ |
a38cf1db AM |
5169 | -q quieten some warnings\n\ |
5170 | -s ignored\n")); | |
5171 | #else | |
5172 | fprintf (stream, _("\ | |
12b55ccc | 5173 | -n Do not optimize code alignment\n\ |
a38cf1db | 5174 | -q quieten some warnings\n")); |
4cc782b5 | 5175 | #endif |
252b5132 RH |
5176 | } |
5177 | ||
3e73aa7c JH |
5178 | #if ((defined (OBJ_MAYBE_COFF) && defined (OBJ_MAYBE_AOUT)) \ |
5179 | || defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) | |
252b5132 RH |
5180 | |
5181 | /* Pick the target format to use. */ | |
5182 | ||
47926f60 | 5183 | const char * |
252b5132 RH |
5184 | i386_target_format () |
5185 | { | |
3e73aa7c JH |
5186 | if (!strcmp (default_arch, "x86_64")) |
5187 | set_code_flag (CODE_64BIT); | |
5188 | else if (!strcmp (default_arch, "i386")) | |
5189 | set_code_flag (CODE_32BIT); | |
5190 | else | |
5191 | as_fatal (_("Unknown architecture")); | |
252b5132 RH |
5192 | switch (OUTPUT_FLAVOR) |
5193 | { | |
4c63da97 AM |
5194 | #ifdef OBJ_MAYBE_AOUT |
5195 | case bfd_target_aout_flavour: | |
47926f60 | 5196 | return AOUT_TARGET_FORMAT; |
4c63da97 AM |
5197 | #endif |
5198 | #ifdef OBJ_MAYBE_COFF | |
252b5132 RH |
5199 | case bfd_target_coff_flavour: |
5200 | return "coff-i386"; | |
4c63da97 | 5201 | #endif |
3e73aa7c | 5202 | #if defined (OBJ_MAYBE_ELF) || defined (OBJ_ELF) |
252b5132 | 5203 | case bfd_target_elf_flavour: |
3e73aa7c | 5204 | { |
e5cb08ac KH |
5205 | if (flag_code == CODE_64BIT) |
5206 | use_rela_relocations = 1; | |
4ada7262 | 5207 | return flag_code == CODE_64BIT ? "elf64-x86-64" : ELF_TARGET_FORMAT; |
3e73aa7c | 5208 | } |
4c63da97 | 5209 | #endif |
252b5132 RH |
5210 | default: |
5211 | abort (); | |
5212 | return NULL; | |
5213 | } | |
5214 | } | |
5215 | ||
47926f60 | 5216 | #endif /* OBJ_MAYBE_ more than one */ |
a847613f AM |
5217 | |
5218 | #if (defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)) | |
5219 | void i386_elf_emit_arch_note () | |
5220 | { | |
5221 | if (OUTPUT_FLAVOR == bfd_target_elf_flavour | |
5222 | && cpu_arch_name != NULL) | |
5223 | { | |
5224 | char *p; | |
5225 | asection *seg = now_seg; | |
5226 | subsegT subseg = now_subseg; | |
5227 | Elf_Internal_Note i_note; | |
5228 | Elf_External_Note e_note; | |
5229 | asection *note_secp; | |
5230 | int len; | |
5231 | ||
5232 | /* Create the .note section. */ | |
5233 | note_secp = subseg_new (".note", 0); | |
5234 | bfd_set_section_flags (stdoutput, | |
5235 | note_secp, | |
5236 | SEC_HAS_CONTENTS | SEC_READONLY); | |
5237 | ||
5238 | /* Process the arch string. */ | |
5239 | len = strlen (cpu_arch_name); | |
5240 | ||
5241 | i_note.namesz = len + 1; | |
5242 | i_note.descsz = 0; | |
5243 | i_note.type = NT_ARCH; | |
5244 | p = frag_more (sizeof (e_note.namesz)); | |
5245 | md_number_to_chars (p, (valueT) i_note.namesz, sizeof (e_note.namesz)); | |
5246 | p = frag_more (sizeof (e_note.descsz)); | |
5247 | md_number_to_chars (p, (valueT) i_note.descsz, sizeof (e_note.descsz)); | |
5248 | p = frag_more (sizeof (e_note.type)); | |
5249 | md_number_to_chars (p, (valueT) i_note.type, sizeof (e_note.type)); | |
5250 | p = frag_more (len + 1); | |
5251 | strcpy (p, cpu_arch_name); | |
5252 | ||
5253 | frag_align (2, 0, 0); | |
5254 | ||
5255 | subseg_set (seg, subseg); | |
5256 | } | |
5257 | } | |
5258 | #endif | |
252b5132 | 5259 | \f |
252b5132 RH |
5260 | symbolS * |
5261 | md_undefined_symbol (name) | |
5262 | char *name; | |
5263 | { | |
18dc2407 ILT |
5264 | if (name[0] == GLOBAL_OFFSET_TABLE_NAME[0] |
5265 | && name[1] == GLOBAL_OFFSET_TABLE_NAME[1] | |
5266 | && name[2] == GLOBAL_OFFSET_TABLE_NAME[2] | |
5267 | && strcmp (name, GLOBAL_OFFSET_TABLE_NAME) == 0) | |
24eab124 AM |
5268 | { |
5269 | if (!GOT_symbol) | |
5270 | { | |
5271 | if (symbol_find (name)) | |
5272 | as_bad (_("GOT already in symbol table")); | |
5273 | GOT_symbol = symbol_new (name, undefined_section, | |
5274 | (valueT) 0, &zero_address_frag); | |
5275 | }; | |
5276 | return GOT_symbol; | |
5277 | } | |
252b5132 RH |
5278 | return 0; |
5279 | } | |
5280 | ||
5281 | /* Round up a section size to the appropriate boundary. */ | |
47926f60 | 5282 | |
252b5132 RH |
5283 | valueT |
5284 | md_section_align (segment, size) | |
ab9da554 | 5285 | segT segment ATTRIBUTE_UNUSED; |
252b5132 RH |
5286 | valueT size; |
5287 | { | |
4c63da97 AM |
5288 | #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT)) |
5289 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour) | |
5290 | { | |
5291 | /* For a.out, force the section size to be aligned. If we don't do | |
5292 | this, BFD will align it for us, but it will not write out the | |
5293 | final bytes of the section. This may be a bug in BFD, but it is | |
5294 | easier to fix it here since that is how the other a.out targets | |
5295 | work. */ | |
5296 | int align; | |
5297 | ||
5298 | align = bfd_get_section_alignment (stdoutput, segment); | |
5299 | size = ((size + (1 << align) - 1) & ((valueT) -1 << align)); | |
5300 | } | |
252b5132 RH |
5301 | #endif |
5302 | ||
5303 | return size; | |
5304 | } | |
5305 | ||
5306 | /* On the i386, PC-relative offsets are relative to the start of the | |
5307 | next instruction. That is, the address of the offset, plus its | |
5308 | size, since the offset is always the last part of the insn. */ | |
5309 | ||
5310 | long | |
5311 | md_pcrel_from (fixP) | |
5312 | fixS *fixP; | |
5313 | { | |
5314 | return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; | |
5315 | } | |
5316 | ||
5317 | #ifndef I386COFF | |
5318 | ||
5319 | static void | |
5320 | s_bss (ignore) | |
ab9da554 | 5321 | int ignore ATTRIBUTE_UNUSED; |
252b5132 | 5322 | { |
29b0f896 | 5323 | int temp; |
252b5132 | 5324 | |
8a75718c JB |
5325 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
5326 | if (IS_ELF) | |
5327 | obj_elf_section_change_hook (); | |
5328 | #endif | |
252b5132 RH |
5329 | temp = get_absolute_expression (); |
5330 | subseg_set (bss_section, (subsegT) temp); | |
5331 | demand_empty_rest_of_line (); | |
5332 | } | |
5333 | ||
5334 | #endif | |
5335 | ||
252b5132 RH |
5336 | void |
5337 | i386_validate_fix (fixp) | |
5338 | fixS *fixp; | |
5339 | { | |
5340 | if (fixp->fx_subsy && fixp->fx_subsy == GOT_symbol) | |
5341 | { | |
3e73aa7c | 5342 | /* GOTOFF relocation are nonsense in 64bit mode. */ |
23df1078 JH |
5343 | if (fixp->fx_r_type == BFD_RELOC_32_PCREL) |
5344 | { | |
5345 | if (flag_code != CODE_64BIT) | |
5346 | abort (); | |
5347 | fixp->fx_r_type = BFD_RELOC_X86_64_GOTPCREL; | |
5348 | } | |
5349 | else | |
5350 | { | |
5351 | if (flag_code == CODE_64BIT) | |
5352 | abort (); | |
5353 | fixp->fx_r_type = BFD_RELOC_386_GOTOFF; | |
5354 | } | |
252b5132 RH |
5355 | fixp->fx_subsy = 0; |
5356 | } | |
5357 | } | |
5358 | ||
252b5132 RH |
5359 | arelent * |
5360 | tc_gen_reloc (section, fixp) | |
ab9da554 | 5361 | asection *section ATTRIBUTE_UNUSED; |
252b5132 RH |
5362 | fixS *fixp; |
5363 | { | |
5364 | arelent *rel; | |
5365 | bfd_reloc_code_real_type code; | |
5366 | ||
5367 | switch (fixp->fx_r_type) | |
5368 | { | |
3e73aa7c JH |
5369 | case BFD_RELOC_X86_64_PLT32: |
5370 | case BFD_RELOC_X86_64_GOT32: | |
5371 | case BFD_RELOC_X86_64_GOTPCREL: | |
252b5132 RH |
5372 | case BFD_RELOC_386_PLT32: |
5373 | case BFD_RELOC_386_GOT32: | |
5374 | case BFD_RELOC_386_GOTOFF: | |
5375 | case BFD_RELOC_386_GOTPC: | |
13ae64f3 JJ |
5376 | case BFD_RELOC_386_TLS_GD: |
5377 | case BFD_RELOC_386_TLS_LDM: | |
5378 | case BFD_RELOC_386_TLS_LDO_32: | |
5379 | case BFD_RELOC_386_TLS_IE_32: | |
37e55690 JJ |
5380 | case BFD_RELOC_386_TLS_IE: |
5381 | case BFD_RELOC_386_TLS_GOTIE: | |
13ae64f3 JJ |
5382 | case BFD_RELOC_386_TLS_LE_32: |
5383 | case BFD_RELOC_386_TLS_LE: | |
bffbf940 JJ |
5384 | case BFD_RELOC_X86_64_TLSGD: |
5385 | case BFD_RELOC_X86_64_TLSLD: | |
5386 | case BFD_RELOC_X86_64_DTPOFF32: | |
5387 | case BFD_RELOC_X86_64_GOTTPOFF: | |
5388 | case BFD_RELOC_X86_64_TPOFF32: | |
252b5132 RH |
5389 | case BFD_RELOC_RVA: |
5390 | case BFD_RELOC_VTABLE_ENTRY: | |
5391 | case BFD_RELOC_VTABLE_INHERIT: | |
6482c264 NC |
5392 | #ifdef TE_PE |
5393 | case BFD_RELOC_32_SECREL: | |
5394 | #endif | |
252b5132 RH |
5395 | code = fixp->fx_r_type; |
5396 | break; | |
dbbaec26 L |
5397 | case BFD_RELOC_X86_64_32S: |
5398 | if (!fixp->fx_pcrel) | |
5399 | { | |
5400 | /* Don't turn BFD_RELOC_X86_64_32S into BFD_RELOC_32. */ | |
5401 | code = fixp->fx_r_type; | |
5402 | break; | |
5403 | } | |
252b5132 | 5404 | default: |
93382f6d | 5405 | if (fixp->fx_pcrel) |
252b5132 | 5406 | { |
93382f6d AM |
5407 | switch (fixp->fx_size) |
5408 | { | |
5409 | default: | |
b091f402 AM |
5410 | as_bad_where (fixp->fx_file, fixp->fx_line, |
5411 | _("can not do %d byte pc-relative relocation"), | |
5412 | fixp->fx_size); | |
93382f6d AM |
5413 | code = BFD_RELOC_32_PCREL; |
5414 | break; | |
5415 | case 1: code = BFD_RELOC_8_PCREL; break; | |
5416 | case 2: code = BFD_RELOC_16_PCREL; break; | |
5417 | case 4: code = BFD_RELOC_32_PCREL; break; | |
5418 | } | |
5419 | } | |
5420 | else | |
5421 | { | |
5422 | switch (fixp->fx_size) | |
5423 | { | |
5424 | default: | |
b091f402 AM |
5425 | as_bad_where (fixp->fx_file, fixp->fx_line, |
5426 | _("can not do %d byte relocation"), | |
5427 | fixp->fx_size); | |
93382f6d AM |
5428 | code = BFD_RELOC_32; |
5429 | break; | |
5430 | case 1: code = BFD_RELOC_8; break; | |
5431 | case 2: code = BFD_RELOC_16; break; | |
5432 | case 4: code = BFD_RELOC_32; break; | |
937149dd | 5433 | #ifdef BFD64 |
3e73aa7c | 5434 | case 8: code = BFD_RELOC_64; break; |
937149dd | 5435 | #endif |
93382f6d | 5436 | } |
252b5132 RH |
5437 | } |
5438 | break; | |
5439 | } | |
252b5132 RH |
5440 | |
5441 | if (code == BFD_RELOC_32 | |
5442 | && GOT_symbol | |
5443 | && fixp->fx_addsy == GOT_symbol) | |
3e73aa7c JH |
5444 | { |
5445 | /* We don't support GOTPC on 64bit targets. */ | |
5446 | if (flag_code == CODE_64BIT) | |
bfb32b52 | 5447 | abort (); |
3e73aa7c JH |
5448 | code = BFD_RELOC_386_GOTPC; |
5449 | } | |
252b5132 RH |
5450 | |
5451 | rel = (arelent *) xmalloc (sizeof (arelent)); | |
49309057 ILT |
5452 | rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
5453 | *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
5454 | |
5455 | rel->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
c87db184 | 5456 | |
3e73aa7c JH |
5457 | if (!use_rela_relocations) |
5458 | { | |
5459 | /* HACK: Since i386 ELF uses Rel instead of Rela, encode the | |
5460 | vtable entry to be used in the relocation's section offset. */ | |
5461 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
5462 | rel->address = fixp->fx_offset; | |
252b5132 | 5463 | |
c6682705 | 5464 | rel->addend = 0; |
3e73aa7c JH |
5465 | } |
5466 | /* Use the rela in 64bit mode. */ | |
252b5132 | 5467 | else |
3e73aa7c | 5468 | { |
062cd5e7 AS |
5469 | if (!fixp->fx_pcrel) |
5470 | rel->addend = fixp->fx_offset; | |
5471 | else | |
5472 | switch (code) | |
5473 | { | |
5474 | case BFD_RELOC_X86_64_PLT32: | |
5475 | case BFD_RELOC_X86_64_GOT32: | |
5476 | case BFD_RELOC_X86_64_GOTPCREL: | |
bffbf940 JJ |
5477 | case BFD_RELOC_X86_64_TLSGD: |
5478 | case BFD_RELOC_X86_64_TLSLD: | |
5479 | case BFD_RELOC_X86_64_GOTTPOFF: | |
062cd5e7 AS |
5480 | rel->addend = fixp->fx_offset - fixp->fx_size; |
5481 | break; | |
5482 | default: | |
5483 | rel->addend = (section->vma | |
5484 | - fixp->fx_size | |
5485 | + fixp->fx_addnumber | |
5486 | + md_pcrel_from (fixp)); | |
5487 | break; | |
5488 | } | |
3e73aa7c JH |
5489 | } |
5490 | ||
252b5132 RH |
5491 | rel->howto = bfd_reloc_type_lookup (stdoutput, code); |
5492 | if (rel->howto == NULL) | |
5493 | { | |
5494 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
d0b47220 | 5495 | _("cannot represent relocation type %s"), |
252b5132 RH |
5496 | bfd_get_reloc_code_name (code)); |
5497 | /* Set howto to a garbage value so that we can keep going. */ | |
5498 | rel->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32); | |
5499 | assert (rel->howto != NULL); | |
5500 | } | |
5501 | ||
5502 | return rel; | |
5503 | } | |
5504 | ||
64a0c779 DN |
5505 | \f |
5506 | /* Parse operands using Intel syntax. This implements a recursive descent | |
5507 | parser based on the BNF grammar published in Appendix B of the MASM 6.1 | |
5508 | Programmer's Guide. | |
5509 | ||
5510 | FIXME: We do not recognize the full operand grammar defined in the MASM | |
5511 | documentation. In particular, all the structure/union and | |
5512 | high-level macro operands are missing. | |
5513 | ||
5514 | Uppercase words are terminals, lower case words are non-terminals. | |
5515 | Objects surrounded by double brackets '[[' ']]' are optional. Vertical | |
5516 | bars '|' denote choices. Most grammar productions are implemented in | |
5517 | functions called 'intel_<production>'. | |
5518 | ||
5519 | Initial production is 'expr'. | |
5520 | ||
9306ca4a | 5521 | addOp + | - |
64a0c779 DN |
5522 | |
5523 | alpha [a-zA-Z] | |
5524 | ||
9306ca4a JB |
5525 | binOp & | AND | \| | OR | ^ | XOR |
5526 | ||
64a0c779 DN |
5527 | byteRegister AL | AH | BL | BH | CL | CH | DL | DH |
5528 | ||
5529 | constant digits [[ radixOverride ]] | |
5530 | ||
9306ca4a | 5531 | dataType BYTE | WORD | DWORD | FWORD | QWORD | TBYTE | OWORD | XMMWORD |
64a0c779 DN |
5532 | |
5533 | digits decdigit | |
b77a7acd AJ |
5534 | | digits decdigit |
5535 | | digits hexdigit | |
64a0c779 DN |
5536 | |
5537 | decdigit [0-9] | |
5538 | ||
9306ca4a JB |
5539 | e04 e04 addOp e05 |
5540 | | e05 | |
5541 | ||
5542 | e05 e05 binOp e06 | |
b77a7acd | 5543 | | e06 |
64a0c779 DN |
5544 | |
5545 | e06 e06 mulOp e09 | |
b77a7acd | 5546 | | e09 |
64a0c779 DN |
5547 | |
5548 | e09 OFFSET e10 | |
a724f0f4 JB |
5549 | | SHORT e10 |
5550 | | + e10 | |
5551 | | - e10 | |
9306ca4a JB |
5552 | | ~ e10 |
5553 | | NOT e10 | |
64a0c779 DN |
5554 | | e09 PTR e10 |
5555 | | e09 : e10 | |
5556 | | e10 | |
5557 | ||
5558 | e10 e10 [ expr ] | |
b77a7acd | 5559 | | e11 |
64a0c779 DN |
5560 | |
5561 | e11 ( expr ) | |
b77a7acd | 5562 | | [ expr ] |
64a0c779 DN |
5563 | | constant |
5564 | | dataType | |
5565 | | id | |
5566 | | $ | |
5567 | | register | |
5568 | ||
a724f0f4 | 5569 | => expr expr cmpOp e04 |
9306ca4a | 5570 | | e04 |
64a0c779 DN |
5571 | |
5572 | gpRegister AX | EAX | BX | EBX | CX | ECX | DX | EDX | |
b77a7acd | 5573 | | BP | EBP | SP | ESP | DI | EDI | SI | ESI |
64a0c779 DN |
5574 | |
5575 | hexdigit a | b | c | d | e | f | |
b77a7acd | 5576 | | A | B | C | D | E | F |
64a0c779 DN |
5577 | |
5578 | id alpha | |
b77a7acd | 5579 | | id alpha |
64a0c779 DN |
5580 | | id decdigit |
5581 | ||
9306ca4a | 5582 | mulOp * | / | % | MOD | << | SHL | >> | SHR |
64a0c779 DN |
5583 | |
5584 | quote " | ' | |
5585 | ||
5586 | register specialRegister | |
b77a7acd | 5587 | | gpRegister |
64a0c779 DN |
5588 | | byteRegister |
5589 | ||
5590 | segmentRegister CS | DS | ES | FS | GS | SS | |
5591 | ||
9306ca4a | 5592 | specialRegister CR0 | CR2 | CR3 | CR4 |
b77a7acd | 5593 | | DR0 | DR1 | DR2 | DR3 | DR6 | DR7 |
64a0c779 DN |
5594 | | TR3 | TR4 | TR5 | TR6 | TR7 |
5595 | ||
64a0c779 DN |
5596 | We simplify the grammar in obvious places (e.g., register parsing is |
5597 | done by calling parse_register) and eliminate immediate left recursion | |
5598 | to implement a recursive-descent parser. | |
5599 | ||
a724f0f4 JB |
5600 | expr e04 expr' |
5601 | ||
5602 | expr' cmpOp e04 expr' | |
5603 | | Empty | |
9306ca4a JB |
5604 | |
5605 | e04 e05 e04' | |
5606 | ||
5607 | e04' addOp e05 e04' | |
5608 | | Empty | |
64a0c779 DN |
5609 | |
5610 | e05 e06 e05' | |
5611 | ||
9306ca4a | 5612 | e05' binOp e06 e05' |
b77a7acd | 5613 | | Empty |
64a0c779 DN |
5614 | |
5615 | e06 e09 e06' | |
5616 | ||
5617 | e06' mulOp e09 e06' | |
b77a7acd | 5618 | | Empty |
64a0c779 DN |
5619 | |
5620 | e09 OFFSET e10 e09' | |
a724f0f4 JB |
5621 | | SHORT e10' |
5622 | | + e10' | |
5623 | | - e10' | |
5624 | | ~ e10' | |
5625 | | NOT e10' | |
b77a7acd | 5626 | | e10 e09' |
64a0c779 DN |
5627 | |
5628 | e09' PTR e10 e09' | |
b77a7acd | 5629 | | : e10 e09' |
64a0c779 DN |
5630 | | Empty |
5631 | ||
5632 | e10 e11 e10' | |
5633 | ||
5634 | e10' [ expr ] e10' | |
b77a7acd | 5635 | | Empty |
64a0c779 DN |
5636 | |
5637 | e11 ( expr ) | |
b77a7acd | 5638 | | [ expr ] |
64a0c779 DN |
5639 | | BYTE |
5640 | | WORD | |
5641 | | DWORD | |
9306ca4a | 5642 | | FWORD |
64a0c779 | 5643 | | QWORD |
9306ca4a JB |
5644 | | TBYTE |
5645 | | OWORD | |
5646 | | XMMWORD | |
64a0c779 DN |
5647 | | . |
5648 | | $ | |
5649 | | register | |
5650 | | id | |
5651 | | constant */ | |
5652 | ||
5653 | /* Parsing structure for the intel syntax parser. Used to implement the | |
5654 | semantic actions for the operand grammar. */ | |
5655 | struct intel_parser_s | |
5656 | { | |
5657 | char *op_string; /* The string being parsed. */ | |
5658 | int got_a_float; /* Whether the operand is a float. */ | |
4a1805b1 | 5659 | int op_modifier; /* Operand modifier. */ |
64a0c779 | 5660 | int is_mem; /* 1 if operand is memory reference. */ |
a724f0f4 JB |
5661 | int in_offset; /* >=1 if parsing operand of offset. */ |
5662 | int in_bracket; /* >=1 if parsing operand in brackets. */ | |
64a0c779 DN |
5663 | const reg_entry *reg; /* Last register reference found. */ |
5664 | char *disp; /* Displacement string being built. */ | |
a724f0f4 | 5665 | char *next_operand; /* Resume point when splitting operands. */ |
64a0c779 DN |
5666 | }; |
5667 | ||
5668 | static struct intel_parser_s intel_parser; | |
5669 | ||
5670 | /* Token structure for parsing intel syntax. */ | |
5671 | struct intel_token | |
5672 | { | |
5673 | int code; /* Token code. */ | |
5674 | const reg_entry *reg; /* Register entry for register tokens. */ | |
5675 | char *str; /* String representation. */ | |
5676 | }; | |
5677 | ||
5678 | static struct intel_token cur_token, prev_token; | |
5679 | ||
50705ef4 AM |
5680 | /* Token codes for the intel parser. Since T_SHORT is already used |
5681 | by COFF, undefine it first to prevent a warning. */ | |
64a0c779 DN |
5682 | #define T_NIL -1 |
5683 | #define T_CONST 1 | |
5684 | #define T_REG 2 | |
5685 | #define T_BYTE 3 | |
5686 | #define T_WORD 4 | |
9306ca4a JB |
5687 | #define T_DWORD 5 |
5688 | #define T_FWORD 6 | |
5689 | #define T_QWORD 7 | |
5690 | #define T_TBYTE 8 | |
5691 | #define T_XMMWORD 9 | |
50705ef4 | 5692 | #undef T_SHORT |
9306ca4a JB |
5693 | #define T_SHORT 10 |
5694 | #define T_OFFSET 11 | |
5695 | #define T_PTR 12 | |
5696 | #define T_ID 13 | |
5697 | #define T_SHL 14 | |
5698 | #define T_SHR 15 | |
64a0c779 DN |
5699 | |
5700 | /* Prototypes for intel parser functions. */ | |
5701 | static int intel_match_token PARAMS ((int code)); | |
cce0cbdc DN |
5702 | static void intel_get_token PARAMS ((void)); |
5703 | static void intel_putback_token PARAMS ((void)); | |
5704 | static int intel_expr PARAMS ((void)); | |
9306ca4a | 5705 | static int intel_e04 PARAMS ((void)); |
cce0cbdc | 5706 | static int intel_e05 PARAMS ((void)); |
cce0cbdc | 5707 | static int intel_e06 PARAMS ((void)); |
cce0cbdc | 5708 | static int intel_e09 PARAMS ((void)); |
a724f0f4 | 5709 | static int intel_bracket_expr PARAMS ((void)); |
cce0cbdc | 5710 | static int intel_e10 PARAMS ((void)); |
cce0cbdc | 5711 | static int intel_e11 PARAMS ((void)); |
64a0c779 | 5712 | |
64a0c779 DN |
5713 | static int |
5714 | i386_intel_operand (operand_string, got_a_float) | |
5715 | char *operand_string; | |
5716 | int got_a_float; | |
5717 | { | |
5718 | int ret; | |
5719 | char *p; | |
5720 | ||
a724f0f4 JB |
5721 | p = intel_parser.op_string = xstrdup (operand_string); |
5722 | intel_parser.disp = (char *) xmalloc (strlen (operand_string) + 1); | |
5723 | ||
5724 | for (;;) | |
64a0c779 | 5725 | { |
a724f0f4 JB |
5726 | /* Initialize token holders. */ |
5727 | cur_token.code = prev_token.code = T_NIL; | |
5728 | cur_token.reg = prev_token.reg = NULL; | |
5729 | cur_token.str = prev_token.str = NULL; | |
5730 | ||
5731 | /* Initialize parser structure. */ | |
5732 | intel_parser.got_a_float = got_a_float; | |
5733 | intel_parser.op_modifier = 0; | |
5734 | intel_parser.is_mem = 0; | |
5735 | intel_parser.in_offset = 0; | |
5736 | intel_parser.in_bracket = 0; | |
5737 | intel_parser.reg = NULL; | |
5738 | intel_parser.disp[0] = '\0'; | |
5739 | intel_parser.next_operand = NULL; | |
5740 | ||
5741 | /* Read the first token and start the parser. */ | |
5742 | intel_get_token (); | |
5743 | ret = intel_expr (); | |
5744 | ||
5745 | if (!ret) | |
5746 | break; | |
5747 | ||
9306ca4a JB |
5748 | if (cur_token.code != T_NIL) |
5749 | { | |
5750 | as_bad (_("invalid operand for '%s' ('%s' unexpected)"), | |
5751 | current_templates->start->name, cur_token.str); | |
5752 | ret = 0; | |
5753 | } | |
64a0c779 DN |
5754 | /* If we found a memory reference, hand it over to i386_displacement |
5755 | to fill in the rest of the operand fields. */ | |
9306ca4a | 5756 | else if (intel_parser.is_mem) |
64a0c779 DN |
5757 | { |
5758 | if ((i.mem_operands == 1 | |
5759 | && (current_templates->start->opcode_modifier & IsString) == 0) | |
5760 | || i.mem_operands == 2) | |
5761 | { | |
5762 | as_bad (_("too many memory references for '%s'"), | |
5763 | current_templates->start->name); | |
5764 | ret = 0; | |
5765 | } | |
5766 | else | |
5767 | { | |
5768 | char *s = intel_parser.disp; | |
5769 | i.mem_operands++; | |
5770 | ||
a724f0f4 JB |
5771 | if (!quiet_warnings && intel_parser.is_mem < 0) |
5772 | /* See the comments in intel_bracket_expr. */ | |
5773 | as_warn (_("Treating `%s' as memory reference"), operand_string); | |
5774 | ||
64a0c779 DN |
5775 | /* Add the displacement expression. */ |
5776 | if (*s != '\0') | |
a4622f40 AM |
5777 | ret = i386_displacement (s, s + strlen (s)); |
5778 | if (ret) | |
a724f0f4 JB |
5779 | { |
5780 | /* Swap base and index in 16-bit memory operands like | |
5781 | [si+bx]. Since i386_index_check is also used in AT&T | |
5782 | mode we have to do that here. */ | |
5783 | if (i.base_reg | |
5784 | && i.index_reg | |
5785 | && (i.base_reg->reg_type & Reg16) | |
5786 | && (i.index_reg->reg_type & Reg16) | |
5787 | && i.base_reg->reg_num >= 6 | |
5788 | && i.index_reg->reg_num < 6) | |
5789 | { | |
5790 | const reg_entry *base = i.index_reg; | |
5791 | ||
5792 | i.index_reg = i.base_reg; | |
5793 | i.base_reg = base; | |
5794 | } | |
5795 | ret = i386_index_check (operand_string); | |
5796 | } | |
64a0c779 DN |
5797 | } |
5798 | } | |
5799 | ||
5800 | /* Constant and OFFSET expressions are handled by i386_immediate. */ | |
a724f0f4 | 5801 | else if ((intel_parser.op_modifier & (1 << T_OFFSET)) |
64a0c779 DN |
5802 | || intel_parser.reg == NULL) |
5803 | ret = i386_immediate (intel_parser.disp); | |
a724f0f4 JB |
5804 | |
5805 | if (intel_parser.next_operand && this_operand >= MAX_OPERANDS - 1) | |
5806 | ret = 0; | |
5807 | if (!ret || !intel_parser.next_operand) | |
5808 | break; | |
5809 | intel_parser.op_string = intel_parser.next_operand; | |
5810 | this_operand = i.operands++; | |
64a0c779 DN |
5811 | } |
5812 | ||
5813 | free (p); | |
5814 | free (intel_parser.disp); | |
5815 | ||
5816 | return ret; | |
5817 | } | |
5818 | ||
a724f0f4 JB |
5819 | #define NUM_ADDRESS_REGS (!!i.base_reg + !!i.index_reg) |
5820 | ||
5821 | /* expr e04 expr' | |
5822 | ||
5823 | expr' cmpOp e04 expr' | |
5824 | | Empty */ | |
64a0c779 DN |
5825 | static int |
5826 | intel_expr () | |
5827 | { | |
a724f0f4 JB |
5828 | /* XXX Implement the comparison operators. */ |
5829 | return intel_e04 (); | |
9306ca4a JB |
5830 | } |
5831 | ||
a724f0f4 | 5832 | /* e04 e05 e04' |
9306ca4a | 5833 | |
a724f0f4 | 5834 | e04' addOp e05 e04' |
9306ca4a JB |
5835 | | Empty */ |
5836 | static int | |
5837 | intel_e04 () | |
5838 | { | |
a724f0f4 | 5839 | int nregs = -1; |
9306ca4a | 5840 | |
a724f0f4 | 5841 | for (;;) |
9306ca4a | 5842 | { |
a724f0f4 JB |
5843 | if (!intel_e05()) |
5844 | return 0; | |
9306ca4a | 5845 | |
a724f0f4 JB |
5846 | if (nregs >= 0 && NUM_ADDRESS_REGS > nregs) |
5847 | i.base_reg = i386_regtab + REGNAM_AL; /* al is invalid as base */ | |
9306ca4a | 5848 | |
a724f0f4 JB |
5849 | if (cur_token.code == '+') |
5850 | nregs = -1; | |
5851 | else if (cur_token.code == '-') | |
5852 | nregs = NUM_ADDRESS_REGS; | |
5853 | else | |
5854 | return 1; | |
64a0c779 | 5855 | |
a724f0f4 JB |
5856 | strcat (intel_parser.disp, cur_token.str); |
5857 | intel_match_token (cur_token.code); | |
5858 | } | |
64a0c779 DN |
5859 | } |
5860 | ||
64a0c779 DN |
5861 | /* e05 e06 e05' |
5862 | ||
9306ca4a | 5863 | e05' binOp e06 e05' |
64a0c779 DN |
5864 | | Empty */ |
5865 | static int | |
5866 | intel_e05 () | |
5867 | { | |
a724f0f4 | 5868 | int nregs = ~NUM_ADDRESS_REGS; |
64a0c779 | 5869 | |
a724f0f4 | 5870 | for (;;) |
64a0c779 | 5871 | { |
a724f0f4 JB |
5872 | if (!intel_e06()) |
5873 | return 0; | |
5874 | ||
5875 | if (cur_token.code == '&' || cur_token.code == '|' || cur_token.code == '^') | |
5876 | { | |
5877 | char str[2]; | |
5878 | ||
5879 | str[0] = cur_token.code; | |
5880 | str[1] = 0; | |
5881 | strcat (intel_parser.disp, str); | |
5882 | } | |
5883 | else | |
5884 | break; | |
9306ca4a | 5885 | |
64a0c779 DN |
5886 | intel_match_token (cur_token.code); |
5887 | ||
a724f0f4 JB |
5888 | if (nregs < 0) |
5889 | nregs = ~nregs; | |
64a0c779 | 5890 | } |
a724f0f4 JB |
5891 | if (nregs >= 0 && NUM_ADDRESS_REGS > nregs) |
5892 | i.base_reg = i386_regtab + REGNAM_AL + 1; /* cl is invalid as base */ | |
5893 | return 1; | |
4a1805b1 | 5894 | } |
64a0c779 DN |
5895 | |
5896 | /* e06 e09 e06' | |
5897 | ||
5898 | e06' mulOp e09 e06' | |
b77a7acd | 5899 | | Empty */ |
64a0c779 DN |
5900 | static int |
5901 | intel_e06 () | |
5902 | { | |
a724f0f4 | 5903 | int nregs = ~NUM_ADDRESS_REGS; |
64a0c779 | 5904 | |
a724f0f4 | 5905 | for (;;) |
64a0c779 | 5906 | { |
a724f0f4 JB |
5907 | if (!intel_e09()) |
5908 | return 0; | |
9306ca4a | 5909 | |
a724f0f4 JB |
5910 | if (cur_token.code == '*' || cur_token.code == '/' || cur_token.code == '%') |
5911 | { | |
5912 | char str[2]; | |
9306ca4a | 5913 | |
a724f0f4 JB |
5914 | str[0] = cur_token.code; |
5915 | str[1] = 0; | |
5916 | strcat (intel_parser.disp, str); | |
5917 | } | |
5918 | else if (cur_token.code == T_SHL) | |
5919 | strcat (intel_parser.disp, "<<"); | |
5920 | else if (cur_token.code == T_SHR) | |
5921 | strcat (intel_parser.disp, ">>"); | |
5922 | else | |
5923 | break; | |
9306ca4a | 5924 | |
a724f0f4 | 5925 | intel_match_token (cur_token.code); |
64a0c779 | 5926 | |
a724f0f4 JB |
5927 | if (nregs < 0) |
5928 | nregs = ~nregs; | |
64a0c779 | 5929 | } |
a724f0f4 JB |
5930 | if (nregs >= 0 && NUM_ADDRESS_REGS > nregs) |
5931 | i.base_reg = i386_regtab + REGNAM_AL + 2; /* dl is invalid as base */ | |
5932 | return 1; | |
64a0c779 DN |
5933 | } |
5934 | ||
a724f0f4 JB |
5935 | /* e09 OFFSET e09 |
5936 | | SHORT e09 | |
5937 | | + e09 | |
5938 | | - e09 | |
5939 | | ~ e09 | |
5940 | | NOT e09 | |
9306ca4a JB |
5941 | | e10 e09' |
5942 | ||
64a0c779 | 5943 | e09' PTR e10 e09' |
b77a7acd | 5944 | | : e10 e09' |
64a0c779 DN |
5945 | | Empty */ |
5946 | static int | |
5947 | intel_e09 () | |
5948 | { | |
a724f0f4 JB |
5949 | int nregs = ~NUM_ADDRESS_REGS; |
5950 | int in_offset = 0; | |
5951 | ||
5952 | for (;;) | |
64a0c779 | 5953 | { |
a724f0f4 JB |
5954 | /* Don't consume constants here. */ |
5955 | if (cur_token.code == '+' || cur_token.code == '-') | |
5956 | { | |
5957 | /* Need to look one token ahead - if the next token | |
5958 | is a constant, the current token is its sign. */ | |
5959 | int next_code; | |
5960 | ||
5961 | intel_match_token (cur_token.code); | |
5962 | next_code = cur_token.code; | |
5963 | intel_putback_token (); | |
5964 | if (next_code == T_CONST) | |
5965 | break; | |
5966 | } | |
5967 | ||
5968 | /* e09 OFFSET e09 */ | |
5969 | if (cur_token.code == T_OFFSET) | |
5970 | { | |
5971 | if (!in_offset++) | |
5972 | ++intel_parser.in_offset; | |
5973 | } | |
5974 | ||
5975 | /* e09 SHORT e09 */ | |
5976 | else if (cur_token.code == T_SHORT) | |
5977 | intel_parser.op_modifier |= 1 << T_SHORT; | |
5978 | ||
5979 | /* e09 + e09 */ | |
5980 | else if (cur_token.code == '+') | |
5981 | strcat (intel_parser.disp, "+"); | |
5982 | ||
5983 | /* e09 - e09 | |
5984 | | ~ e09 | |
5985 | | NOT e09 */ | |
5986 | else if (cur_token.code == '-' || cur_token.code == '~') | |
5987 | { | |
5988 | char str[2]; | |
64a0c779 | 5989 | |
a724f0f4 JB |
5990 | if (nregs < 0) |
5991 | nregs = ~nregs; | |
5992 | str[0] = cur_token.code; | |
5993 | str[1] = 0; | |
5994 | strcat (intel_parser.disp, str); | |
5995 | } | |
5996 | ||
5997 | /* e09 e10 e09' */ | |
5998 | else | |
5999 | break; | |
6000 | ||
6001 | intel_match_token (cur_token.code); | |
64a0c779 DN |
6002 | } |
6003 | ||
a724f0f4 | 6004 | for (;;) |
9306ca4a | 6005 | { |
a724f0f4 JB |
6006 | if (!intel_e10 ()) |
6007 | return 0; | |
9306ca4a | 6008 | |
a724f0f4 JB |
6009 | /* e09' PTR e10 e09' */ |
6010 | if (cur_token.code == T_PTR) | |
6011 | { | |
6012 | char suffix; | |
9306ca4a | 6013 | |
a724f0f4 JB |
6014 | if (prev_token.code == T_BYTE) |
6015 | suffix = BYTE_MNEM_SUFFIX; | |
9306ca4a | 6016 | |
a724f0f4 JB |
6017 | else if (prev_token.code == T_WORD) |
6018 | { | |
6019 | if (current_templates->start->name[0] == 'l' | |
6020 | && current_templates->start->name[2] == 's' | |
6021 | && current_templates->start->name[3] == 0) | |
6022 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
6023 | else if (intel_parser.got_a_float == 2) /* "fi..." */ | |
6024 | suffix = SHORT_MNEM_SUFFIX; | |
6025 | else | |
6026 | suffix = WORD_MNEM_SUFFIX; | |
6027 | } | |
64a0c779 | 6028 | |
a724f0f4 JB |
6029 | else if (prev_token.code == T_DWORD) |
6030 | { | |
6031 | if (current_templates->start->name[0] == 'l' | |
6032 | && current_templates->start->name[2] == 's' | |
6033 | && current_templates->start->name[3] == 0) | |
6034 | suffix = WORD_MNEM_SUFFIX; | |
6035 | else if (flag_code == CODE_16BIT | |
6036 | && (current_templates->start->opcode_modifier | |
6037 | & (Jump|JumpDword|JumpInterSegment))) | |
6038 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
6039 | else if (intel_parser.got_a_float == 1) /* "f..." */ | |
6040 | suffix = SHORT_MNEM_SUFFIX; | |
6041 | else | |
6042 | suffix = LONG_MNEM_SUFFIX; | |
6043 | } | |
9306ca4a | 6044 | |
a724f0f4 JB |
6045 | else if (prev_token.code == T_FWORD) |
6046 | { | |
6047 | if (current_templates->start->name[0] == 'l' | |
6048 | && current_templates->start->name[2] == 's' | |
6049 | && current_templates->start->name[3] == 0) | |
6050 | suffix = LONG_MNEM_SUFFIX; | |
6051 | else if (!intel_parser.got_a_float) | |
6052 | { | |
6053 | if (flag_code == CODE_16BIT) | |
6054 | add_prefix (DATA_PREFIX_OPCODE); | |
6055 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
6056 | } | |
6057 | else | |
6058 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
6059 | } | |
64a0c779 | 6060 | |
a724f0f4 JB |
6061 | else if (prev_token.code == T_QWORD) |
6062 | { | |
6063 | if (intel_parser.got_a_float == 1) /* "f..." */ | |
6064 | suffix = LONG_MNEM_SUFFIX; | |
6065 | else | |
6066 | suffix = QWORD_MNEM_SUFFIX; | |
6067 | } | |
64a0c779 | 6068 | |
a724f0f4 JB |
6069 | else if (prev_token.code == T_TBYTE) |
6070 | { | |
6071 | if (intel_parser.got_a_float == 1) | |
6072 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
6073 | else | |
6074 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ | |
6075 | } | |
9306ca4a | 6076 | |
a724f0f4 | 6077 | else if (prev_token.code == T_XMMWORD) |
9306ca4a | 6078 | { |
a724f0f4 JB |
6079 | /* XXX ignored for now, but accepted since gcc uses it */ |
6080 | suffix = 0; | |
9306ca4a | 6081 | } |
64a0c779 | 6082 | |
f16b83df | 6083 | else |
a724f0f4 JB |
6084 | { |
6085 | as_bad (_("Unknown operand modifier `%s'"), prev_token.str); | |
6086 | return 0; | |
6087 | } | |
6088 | ||
6089 | if (current_templates->start->base_opcode == 0x8d /* lea */) | |
6090 | ; | |
6091 | else if (!i.suffix) | |
6092 | i.suffix = suffix; | |
6093 | else if (i.suffix != suffix) | |
6094 | { | |
6095 | as_bad (_("Conflicting operand modifiers")); | |
6096 | return 0; | |
6097 | } | |
64a0c779 | 6098 | |
9306ca4a JB |
6099 | } |
6100 | ||
a724f0f4 JB |
6101 | /* e09' : e10 e09' */ |
6102 | else if (cur_token.code == ':') | |
9306ca4a | 6103 | { |
a724f0f4 JB |
6104 | if (prev_token.code != T_REG) |
6105 | { | |
6106 | /* While {call,jmp} SSSS:OOOO is MASM syntax only when SSSS is a | |
6107 | segment/group identifier (which we don't have), using comma | |
6108 | as the operand separator there is even less consistent, since | |
6109 | there all branches only have a single operand. */ | |
6110 | if (this_operand != 0 | |
6111 | || intel_parser.in_offset | |
6112 | || intel_parser.in_bracket | |
6113 | || (!(current_templates->start->opcode_modifier | |
6114 | & (Jump|JumpDword|JumpInterSegment)) | |
6115 | && !(current_templates->start->operand_types[0] | |
6116 | & JumpAbsolute))) | |
6117 | return intel_match_token (T_NIL); | |
6118 | /* Remember the start of the 2nd operand and terminate 1st | |
6119 | operand here. | |
6120 | XXX This isn't right, yet (when SSSS:OOOO is right operand of | |
6121 | another expression), but it gets at least the simplest case | |
6122 | (a plain number or symbol on the left side) right. */ | |
6123 | intel_parser.next_operand = intel_parser.op_string; | |
6124 | *--intel_parser.op_string = '\0'; | |
6125 | return intel_match_token (':'); | |
6126 | } | |
9306ca4a | 6127 | } |
64a0c779 | 6128 | |
a724f0f4 | 6129 | /* e09' Empty */ |
64a0c779 | 6130 | else |
a724f0f4 | 6131 | break; |
64a0c779 | 6132 | |
a724f0f4 JB |
6133 | intel_match_token (cur_token.code); |
6134 | ||
6135 | } | |
6136 | ||
6137 | if (in_offset) | |
6138 | { | |
6139 | --intel_parser.in_offset; | |
6140 | if (nregs < 0) | |
6141 | nregs = ~nregs; | |
6142 | if (NUM_ADDRESS_REGS > nregs) | |
9306ca4a | 6143 | { |
a724f0f4 | 6144 | as_bad (_("Invalid operand to `OFFSET'")); |
9306ca4a JB |
6145 | return 0; |
6146 | } | |
a724f0f4 JB |
6147 | intel_parser.op_modifier |= 1 << T_OFFSET; |
6148 | } | |
9306ca4a | 6149 | |
a724f0f4 JB |
6150 | if (nregs >= 0 && NUM_ADDRESS_REGS > nregs) |
6151 | i.base_reg = i386_regtab + REGNAM_AL + 3; /* bl is invalid as base */ | |
6152 | return 1; | |
6153 | } | |
64a0c779 | 6154 | |
a724f0f4 JB |
6155 | static int |
6156 | intel_bracket_expr () | |
6157 | { | |
6158 | int was_offset = intel_parser.op_modifier & (1 << T_OFFSET); | |
6159 | const char *start = intel_parser.op_string; | |
6160 | int len; | |
6161 | ||
6162 | if (i.op[this_operand].regs) | |
6163 | return intel_match_token (T_NIL); | |
6164 | ||
6165 | intel_match_token ('['); | |
6166 | ||
6167 | /* Mark as a memory operand only if it's not already known to be an | |
6168 | offset expression. If it's an offset expression, we need to keep | |
6169 | the brace in. */ | |
6170 | if (!intel_parser.in_offset) | |
6171 | { | |
6172 | ++intel_parser.in_bracket; | |
6173 | /* Unfortunately gas always diverged from MASM in a respect that can't | |
6174 | be easily fixed without risking to break code sequences likely to be | |
6175 | encountered (the testsuite even check for this): MASM doesn't consider | |
6176 | an expression inside brackets unconditionally as a memory reference. | |
6177 | When that is e.g. a constant, an offset expression, or the sum of the | |
6178 | two, this is still taken as a constant load. gas, however, always | |
6179 | treated these as memory references. As a compromise, we'll try to make | |
6180 | offset expressions inside brackets work the MASM way (since that's | |
6181 | less likely to be found in real world code), but make constants alone | |
6182 | continue to work the traditional gas way. In either case, issue a | |
6183 | warning. */ | |
6184 | intel_parser.op_modifier &= ~was_offset; | |
64a0c779 | 6185 | } |
a724f0f4 JB |
6186 | else |
6187 | strcat (intel_parser.disp, "["); | |
6188 | ||
6189 | /* Add a '+' to the displacement string if necessary. */ | |
6190 | if (*intel_parser.disp != '\0' | |
6191 | && *(intel_parser.disp + strlen (intel_parser.disp) - 1) != '+') | |
6192 | strcat (intel_parser.disp, "+"); | |
64a0c779 | 6193 | |
a724f0f4 JB |
6194 | if (intel_expr () |
6195 | && (len = intel_parser.op_string - start - 1, | |
6196 | intel_match_token (']'))) | |
64a0c779 | 6197 | { |
a724f0f4 JB |
6198 | /* Preserve brackets when the operand is an offset expression. */ |
6199 | if (intel_parser.in_offset) | |
6200 | strcat (intel_parser.disp, "]"); | |
6201 | else | |
6202 | { | |
6203 | --intel_parser.in_bracket; | |
6204 | if (i.base_reg || i.index_reg) | |
6205 | intel_parser.is_mem = 1; | |
6206 | if (!intel_parser.is_mem) | |
6207 | { | |
6208 | if (!(intel_parser.op_modifier & (1 << T_OFFSET))) | |
6209 | /* Defer the warning until all of the operand was parsed. */ | |
6210 | intel_parser.is_mem = -1; | |
6211 | else if (!quiet_warnings) | |
6212 | as_warn (_("`[%.*s]' taken to mean just `%.*s'"), len, start, len, start); | |
6213 | } | |
6214 | } | |
6215 | intel_parser.op_modifier |= was_offset; | |
64a0c779 | 6216 | |
a724f0f4 | 6217 | return 1; |
64a0c779 | 6218 | } |
a724f0f4 | 6219 | return 0; |
64a0c779 DN |
6220 | } |
6221 | ||
6222 | /* e10 e11 e10' | |
6223 | ||
6224 | e10' [ expr ] e10' | |
b77a7acd | 6225 | | Empty */ |
64a0c779 DN |
6226 | static int |
6227 | intel_e10 () | |
6228 | { | |
a724f0f4 JB |
6229 | if (!intel_e11 ()) |
6230 | return 0; | |
64a0c779 | 6231 | |
a724f0f4 | 6232 | while (cur_token.code == '[') |
64a0c779 | 6233 | { |
a724f0f4 | 6234 | if (!intel_bracket_expr ()) |
21d6c4af | 6235 | return 0; |
64a0c779 DN |
6236 | } |
6237 | ||
a724f0f4 | 6238 | return 1; |
64a0c779 DN |
6239 | } |
6240 | ||
64a0c779 | 6241 | /* e11 ( expr ) |
b77a7acd | 6242 | | [ expr ] |
64a0c779 DN |
6243 | | BYTE |
6244 | | WORD | |
6245 | | DWORD | |
9306ca4a | 6246 | | FWORD |
64a0c779 | 6247 | | QWORD |
9306ca4a JB |
6248 | | TBYTE |
6249 | | OWORD | |
6250 | | XMMWORD | |
4a1805b1 | 6251 | | $ |
64a0c779 DN |
6252 | | . |
6253 | | register | |
6254 | | id | |
6255 | | constant */ | |
6256 | static int | |
6257 | intel_e11 () | |
6258 | { | |
a724f0f4 | 6259 | switch (cur_token.code) |
64a0c779 | 6260 | { |
a724f0f4 JB |
6261 | /* e11 ( expr ) */ |
6262 | case '(': | |
64a0c779 DN |
6263 | intel_match_token ('('); |
6264 | strcat (intel_parser.disp, "("); | |
6265 | ||
6266 | if (intel_expr () && intel_match_token (')')) | |
e5cb08ac KH |
6267 | { |
6268 | strcat (intel_parser.disp, ")"); | |
6269 | return 1; | |
6270 | } | |
a724f0f4 | 6271 | return 0; |
4a1805b1 | 6272 | |
a724f0f4 JB |
6273 | /* e11 [ expr ] */ |
6274 | case '[': | |
6275 | /* Operands for jump/call inside brackets denote absolute addresses. | |
6276 | XXX This shouldn't be needed anymore (or if it should rather live | |
6277 | in intel_bracket_expr). */ | |
9306ca4a JB |
6278 | if (current_templates->start->opcode_modifier |
6279 | & (Jump|JumpDword|JumpByte|JumpInterSegment)) | |
64a0c779 DN |
6280 | i.types[this_operand] |= JumpAbsolute; |
6281 | ||
a724f0f4 | 6282 | return intel_bracket_expr (); |
64a0c779 | 6283 | |
a724f0f4 JB |
6284 | /* e11 $ |
6285 | | . */ | |
6286 | case '.': | |
64a0c779 DN |
6287 | strcat (intel_parser.disp, cur_token.str); |
6288 | intel_match_token (cur_token.code); | |
21d6c4af DN |
6289 | |
6290 | /* Mark as a memory operand only if it's not already known to be an | |
6291 | offset expression. */ | |
a724f0f4 | 6292 | if (!intel_parser.in_offset) |
21d6c4af | 6293 | intel_parser.is_mem = 1; |
64a0c779 DN |
6294 | |
6295 | return 1; | |
64a0c779 | 6296 | |
a724f0f4 JB |
6297 | /* e11 register */ |
6298 | case T_REG: | |
6299 | { | |
6300 | const reg_entry *reg = intel_parser.reg = cur_token.reg; | |
64a0c779 | 6301 | |
a724f0f4 | 6302 | intel_match_token (T_REG); |
64a0c779 | 6303 | |
a724f0f4 JB |
6304 | /* Check for segment change. */ |
6305 | if (cur_token.code == ':') | |
6306 | { | |
6307 | if (!(reg->reg_type & (SReg2 | SReg3))) | |
6308 | { | |
6309 | as_bad (_("`%s' is not a valid segment register"), reg->reg_name); | |
6310 | return 0; | |
6311 | } | |
6312 | else if (i.seg[i.mem_operands]) | |
6313 | as_warn (_("Extra segment override ignored")); | |
6314 | else | |
6315 | { | |
6316 | if (!intel_parser.in_offset) | |
6317 | intel_parser.is_mem = 1; | |
6318 | switch (reg->reg_num) | |
6319 | { | |
6320 | case 0: | |
6321 | i.seg[i.mem_operands] = &es; | |
6322 | break; | |
6323 | case 1: | |
6324 | i.seg[i.mem_operands] = &cs; | |
6325 | break; | |
6326 | case 2: | |
6327 | i.seg[i.mem_operands] = &ss; | |
6328 | break; | |
6329 | case 3: | |
6330 | i.seg[i.mem_operands] = &ds; | |
6331 | break; | |
6332 | case 4: | |
6333 | i.seg[i.mem_operands] = &fs; | |
6334 | break; | |
6335 | case 5: | |
6336 | i.seg[i.mem_operands] = &gs; | |
6337 | break; | |
6338 | } | |
6339 | } | |
6340 | } | |
64a0c779 | 6341 | |
a724f0f4 JB |
6342 | /* Not a segment register. Check for register scaling. */ |
6343 | else if (cur_token.code == '*') | |
6344 | { | |
6345 | if (!intel_parser.in_bracket) | |
6346 | { | |
6347 | as_bad (_("Register scaling only allowed in memory operands")); | |
6348 | return 0; | |
6349 | } | |
64a0c779 | 6350 | |
a724f0f4 JB |
6351 | if (reg->reg_type & Reg16) /* Disallow things like [si*1]. */ |
6352 | reg = i386_regtab + REGNAM_AX + 4; /* sp is invalid as index */ | |
6353 | else if (i.index_reg) | |
6354 | reg = i386_regtab + REGNAM_EAX + 4; /* esp is invalid as index */ | |
64a0c779 | 6355 | |
a724f0f4 JB |
6356 | /* What follows must be a valid scale. */ |
6357 | intel_match_token ('*'); | |
6358 | i.index_reg = reg; | |
6359 | i.types[this_operand] |= BaseIndex; | |
64a0c779 | 6360 | |
a724f0f4 JB |
6361 | /* Set the scale after setting the register (otherwise, |
6362 | i386_scale will complain) */ | |
6363 | if (cur_token.code == '+' || cur_token.code == '-') | |
6364 | { | |
6365 | char *str, sign = cur_token.code; | |
6366 | intel_match_token (cur_token.code); | |
6367 | if (cur_token.code != T_CONST) | |
6368 | { | |
6369 | as_bad (_("Syntax error: Expecting a constant, got `%s'"), | |
6370 | cur_token.str); | |
6371 | return 0; | |
6372 | } | |
6373 | str = (char *) xmalloc (strlen (cur_token.str) + 2); | |
6374 | strcpy (str + 1, cur_token.str); | |
6375 | *str = sign; | |
6376 | if (!i386_scale (str)) | |
6377 | return 0; | |
6378 | free (str); | |
6379 | } | |
6380 | else if (!i386_scale (cur_token.str)) | |
64a0c779 | 6381 | return 0; |
a724f0f4 JB |
6382 | intel_match_token (cur_token.code); |
6383 | } | |
64a0c779 | 6384 | |
a724f0f4 JB |
6385 | /* No scaling. If this is a memory operand, the register is either a |
6386 | base register (first occurrence) or an index register (second | |
6387 | occurrence). */ | |
6388 | else if (intel_parser.in_bracket && !(reg->reg_type & (SReg2 | SReg3))) | |
6389 | { | |
64a0c779 | 6390 | |
a724f0f4 JB |
6391 | if (!i.base_reg) |
6392 | i.base_reg = reg; | |
6393 | else if (!i.index_reg) | |
6394 | i.index_reg = reg; | |
6395 | else | |
6396 | { | |
6397 | as_bad (_("Too many register references in memory operand")); | |
6398 | return 0; | |
6399 | } | |
64a0c779 | 6400 | |
a724f0f4 JB |
6401 | i.types[this_operand] |= BaseIndex; |
6402 | } | |
4a1805b1 | 6403 | |
a724f0f4 JB |
6404 | /* Offset modifier. Add the register to the displacement string to be |
6405 | parsed as an immediate expression after we're done. */ | |
6406 | else if (intel_parser.in_offset) | |
6407 | { | |
6408 | as_warn (_("Using register names in OFFSET expressions is deprecated")); | |
6409 | strcat (intel_parser.disp, reg->reg_name); | |
6410 | } | |
64a0c779 | 6411 | |
a724f0f4 JB |
6412 | /* It's neither base nor index nor offset. */ |
6413 | else if (!intel_parser.is_mem) | |
6414 | { | |
6415 | i.types[this_operand] |= reg->reg_type & ~BaseIndex; | |
6416 | i.op[this_operand].regs = reg; | |
6417 | i.reg_operands++; | |
6418 | } | |
6419 | else | |
6420 | { | |
6421 | as_bad (_("Invalid use of register")); | |
6422 | return 0; | |
6423 | } | |
64a0c779 | 6424 | |
a724f0f4 JB |
6425 | /* Since registers are not part of the displacement string (except |
6426 | when we're parsing offset operands), we may need to remove any | |
6427 | preceding '+' from the displacement string. */ | |
6428 | if (*intel_parser.disp != '\0' | |
6429 | && !intel_parser.in_offset) | |
6430 | { | |
6431 | char *s = intel_parser.disp; | |
6432 | s += strlen (s) - 1; | |
6433 | if (*s == '+') | |
6434 | *s = '\0'; | |
6435 | } | |
4a1805b1 | 6436 | |
a724f0f4 JB |
6437 | return 1; |
6438 | } | |
6439 | ||
6440 | /* e11 BYTE | |
6441 | | WORD | |
6442 | | DWORD | |
6443 | | FWORD | |
6444 | | QWORD | |
6445 | | TBYTE | |
6446 | | OWORD | |
6447 | | XMMWORD */ | |
6448 | case T_BYTE: | |
6449 | case T_WORD: | |
6450 | case T_DWORD: | |
6451 | case T_FWORD: | |
6452 | case T_QWORD: | |
6453 | case T_TBYTE: | |
6454 | case T_XMMWORD: | |
6455 | intel_match_token (cur_token.code); | |
64a0c779 | 6456 | |
a724f0f4 JB |
6457 | if (cur_token.code == T_PTR) |
6458 | return 1; | |
6459 | ||
6460 | /* It must have been an identifier. */ | |
6461 | intel_putback_token (); | |
6462 | cur_token.code = T_ID; | |
6463 | /* FALLTHRU */ | |
6464 | ||
6465 | /* e11 id | |
6466 | | constant */ | |
6467 | case T_ID: | |
6468 | if (!intel_parser.in_offset && intel_parser.is_mem <= 0) | |
9306ca4a JB |
6469 | { |
6470 | symbolS *symbolP; | |
6471 | ||
a724f0f4 JB |
6472 | /* The identifier represents a memory reference only if it's not |
6473 | preceded by an offset modifier and if it's not an equate. */ | |
9306ca4a JB |
6474 | symbolP = symbol_find(cur_token.str); |
6475 | if (!symbolP || S_GET_SEGMENT(symbolP) != absolute_section) | |
6476 | intel_parser.is_mem = 1; | |
6477 | } | |
a724f0f4 | 6478 | /* FALLTHRU */ |
64a0c779 | 6479 | |
a724f0f4 JB |
6480 | case T_CONST: |
6481 | case '-': | |
6482 | case '+': | |
6483 | { | |
6484 | char *save_str, sign = 0; | |
64a0c779 | 6485 | |
a724f0f4 JB |
6486 | /* Allow constants that start with `+' or `-'. */ |
6487 | if (cur_token.code == '-' || cur_token.code == '+') | |
6488 | { | |
6489 | sign = cur_token.code; | |
6490 | intel_match_token (cur_token.code); | |
6491 | if (cur_token.code != T_CONST) | |
6492 | { | |
6493 | as_bad (_("Syntax error: Expecting a constant, got `%s'"), | |
6494 | cur_token.str); | |
6495 | return 0; | |
6496 | } | |
6497 | } | |
64a0c779 | 6498 | |
a724f0f4 JB |
6499 | save_str = (char *) xmalloc (strlen (cur_token.str) + 2); |
6500 | strcpy (save_str + !!sign, cur_token.str); | |
6501 | if (sign) | |
6502 | *save_str = sign; | |
64a0c779 | 6503 | |
a724f0f4 JB |
6504 | /* Get the next token to check for register scaling. */ |
6505 | intel_match_token (cur_token.code); | |
64a0c779 | 6506 | |
a724f0f4 JB |
6507 | /* Check if this constant is a scaling factor for an index register. */ |
6508 | if (cur_token.code == '*') | |
6509 | { | |
6510 | if (intel_match_token ('*') && cur_token.code == T_REG) | |
6511 | { | |
6512 | const reg_entry *reg = cur_token.reg; | |
6513 | ||
6514 | if (!intel_parser.in_bracket) | |
6515 | { | |
6516 | as_bad (_("Register scaling only allowed in memory operands")); | |
6517 | return 0; | |
6518 | } | |
6519 | ||
6520 | if (reg->reg_type & Reg16) /* Disallow things like [1*si]. */ | |
6521 | reg = i386_regtab + REGNAM_AX + 4; /* sp is invalid as index */ | |
6522 | else if (i.index_reg) | |
6523 | reg = i386_regtab + REGNAM_EAX + 4; /* esp is invalid as index */ | |
6524 | ||
6525 | /* The constant is followed by `* reg', so it must be | |
6526 | a valid scale. */ | |
6527 | i.index_reg = reg; | |
6528 | i.types[this_operand] |= BaseIndex; | |
6529 | ||
6530 | /* Set the scale after setting the register (otherwise, | |
6531 | i386_scale will complain) */ | |
6532 | if (!i386_scale (save_str)) | |
64a0c779 | 6533 | return 0; |
a724f0f4 JB |
6534 | intel_match_token (T_REG); |
6535 | ||
6536 | /* Since registers are not part of the displacement | |
6537 | string, we may need to remove any preceding '+' from | |
6538 | the displacement string. */ | |
6539 | if (*intel_parser.disp != '\0') | |
6540 | { | |
6541 | char *s = intel_parser.disp; | |
6542 | s += strlen (s) - 1; | |
6543 | if (*s == '+') | |
6544 | *s = '\0'; | |
6545 | } | |
6546 | ||
6547 | free (save_str); | |
6548 | ||
6549 | return 1; | |
6550 | } | |
64a0c779 | 6551 | |
a724f0f4 JB |
6552 | /* The constant was not used for register scaling. Since we have |
6553 | already consumed the token following `*' we now need to put it | |
6554 | back in the stream. */ | |
64a0c779 | 6555 | intel_putback_token (); |
a724f0f4 | 6556 | } |
64a0c779 | 6557 | |
a724f0f4 JB |
6558 | /* Add the constant to the displacement string. */ |
6559 | strcat (intel_parser.disp, save_str); | |
6560 | free (save_str); | |
64a0c779 | 6561 | |
a724f0f4 JB |
6562 | return 1; |
6563 | } | |
64a0c779 DN |
6564 | } |
6565 | ||
64a0c779 DN |
6566 | as_bad (_("Unrecognized token '%s'"), cur_token.str); |
6567 | return 0; | |
6568 | } | |
6569 | ||
64a0c779 DN |
6570 | /* Match the given token against cur_token. If they match, read the next |
6571 | token from the operand string. */ | |
6572 | static int | |
6573 | intel_match_token (code) | |
e5cb08ac | 6574 | int code; |
64a0c779 DN |
6575 | { |
6576 | if (cur_token.code == code) | |
6577 | { | |
6578 | intel_get_token (); | |
6579 | return 1; | |
6580 | } | |
6581 | else | |
6582 | { | |
0477af35 | 6583 | as_bad (_("Unexpected token `%s'"), cur_token.str); |
64a0c779 DN |
6584 | return 0; |
6585 | } | |
6586 | } | |
6587 | ||
64a0c779 DN |
6588 | /* Read a new token from intel_parser.op_string and store it in cur_token. */ |
6589 | static void | |
6590 | intel_get_token () | |
6591 | { | |
6592 | char *end_op; | |
6593 | const reg_entry *reg; | |
6594 | struct intel_token new_token; | |
6595 | ||
6596 | new_token.code = T_NIL; | |
6597 | new_token.reg = NULL; | |
6598 | new_token.str = NULL; | |
6599 | ||
4a1805b1 | 6600 | /* Free the memory allocated to the previous token and move |
64a0c779 DN |
6601 | cur_token to prev_token. */ |
6602 | if (prev_token.str) | |
6603 | free (prev_token.str); | |
6604 | ||
6605 | prev_token = cur_token; | |
6606 | ||
6607 | /* Skip whitespace. */ | |
6608 | while (is_space_char (*intel_parser.op_string)) | |
6609 | intel_parser.op_string++; | |
6610 | ||
6611 | /* Return an empty token if we find nothing else on the line. */ | |
6612 | if (*intel_parser.op_string == '\0') | |
6613 | { | |
6614 | cur_token = new_token; | |
6615 | return; | |
6616 | } | |
6617 | ||
6618 | /* The new token cannot be larger than the remainder of the operand | |
6619 | string. */ | |
a724f0f4 | 6620 | new_token.str = (char *) xmalloc (strlen (intel_parser.op_string) + 1); |
64a0c779 DN |
6621 | new_token.str[0] = '\0'; |
6622 | ||
6623 | if (strchr ("0123456789", *intel_parser.op_string)) | |
6624 | { | |
6625 | char *p = new_token.str; | |
6626 | char *q = intel_parser.op_string; | |
6627 | new_token.code = T_CONST; | |
6628 | ||
6629 | /* Allow any kind of identifier char to encompass floating point and | |
6630 | hexadecimal numbers. */ | |
6631 | while (is_identifier_char (*q)) | |
6632 | *p++ = *q++; | |
6633 | *p = '\0'; | |
6634 | ||
6635 | /* Recognize special symbol names [0-9][bf]. */ | |
6636 | if (strlen (intel_parser.op_string) == 2 | |
4a1805b1 | 6637 | && (intel_parser.op_string[1] == 'b' |
64a0c779 DN |
6638 | || intel_parser.op_string[1] == 'f')) |
6639 | new_token.code = T_ID; | |
6640 | } | |
6641 | ||
64a0c779 DN |
6642 | else if ((*intel_parser.op_string == REGISTER_PREFIX || allow_naked_reg) |
6643 | && ((reg = parse_register (intel_parser.op_string, &end_op)) != NULL)) | |
6644 | { | |
6645 | new_token.code = T_REG; | |
6646 | new_token.reg = reg; | |
6647 | ||
6648 | if (*intel_parser.op_string == REGISTER_PREFIX) | |
6649 | { | |
6650 | new_token.str[0] = REGISTER_PREFIX; | |
6651 | new_token.str[1] = '\0'; | |
6652 | } | |
6653 | ||
6654 | strcat (new_token.str, reg->reg_name); | |
6655 | } | |
6656 | ||
6657 | else if (is_identifier_char (*intel_parser.op_string)) | |
6658 | { | |
6659 | char *p = new_token.str; | |
6660 | char *q = intel_parser.op_string; | |
6661 | ||
6662 | /* A '.' or '$' followed by an identifier char is an identifier. | |
6663 | Otherwise, it's operator '.' followed by an expression. */ | |
6664 | if ((*q == '.' || *q == '$') && !is_identifier_char (*(q + 1))) | |
6665 | { | |
9306ca4a JB |
6666 | new_token.code = '.'; |
6667 | new_token.str[0] = '.'; | |
64a0c779 DN |
6668 | new_token.str[1] = '\0'; |
6669 | } | |
6670 | else | |
6671 | { | |
6672 | while (is_identifier_char (*q) || *q == '@') | |
6673 | *p++ = *q++; | |
6674 | *p = '\0'; | |
6675 | ||
9306ca4a JB |
6676 | if (strcasecmp (new_token.str, "NOT") == 0) |
6677 | new_token.code = '~'; | |
6678 | ||
6679 | else if (strcasecmp (new_token.str, "MOD") == 0) | |
6680 | new_token.code = '%'; | |
6681 | ||
6682 | else if (strcasecmp (new_token.str, "AND") == 0) | |
6683 | new_token.code = '&'; | |
6684 | ||
6685 | else if (strcasecmp (new_token.str, "OR") == 0) | |
6686 | new_token.code = '|'; | |
6687 | ||
6688 | else if (strcasecmp (new_token.str, "XOR") == 0) | |
6689 | new_token.code = '^'; | |
6690 | ||
6691 | else if (strcasecmp (new_token.str, "SHL") == 0) | |
6692 | new_token.code = T_SHL; | |
6693 | ||
6694 | else if (strcasecmp (new_token.str, "SHR") == 0) | |
6695 | new_token.code = T_SHR; | |
6696 | ||
6697 | else if (strcasecmp (new_token.str, "BYTE") == 0) | |
64a0c779 DN |
6698 | new_token.code = T_BYTE; |
6699 | ||
6700 | else if (strcasecmp (new_token.str, "WORD") == 0) | |
6701 | new_token.code = T_WORD; | |
6702 | ||
6703 | else if (strcasecmp (new_token.str, "DWORD") == 0) | |
6704 | new_token.code = T_DWORD; | |
6705 | ||
9306ca4a JB |
6706 | else if (strcasecmp (new_token.str, "FWORD") == 0) |
6707 | new_token.code = T_FWORD; | |
6708 | ||
64a0c779 DN |
6709 | else if (strcasecmp (new_token.str, "QWORD") == 0) |
6710 | new_token.code = T_QWORD; | |
6711 | ||
9306ca4a JB |
6712 | else if (strcasecmp (new_token.str, "TBYTE") == 0 |
6713 | /* XXX remove (gcc still uses it) */ | |
6714 | || strcasecmp (new_token.str, "XWORD") == 0) | |
6715 | new_token.code = T_TBYTE; | |
6716 | ||
6717 | else if (strcasecmp (new_token.str, "XMMWORD") == 0 | |
6718 | || strcasecmp (new_token.str, "OWORD") == 0) | |
6719 | new_token.code = T_XMMWORD; | |
64a0c779 DN |
6720 | |
6721 | else if (strcasecmp (new_token.str, "PTR") == 0) | |
6722 | new_token.code = T_PTR; | |
6723 | ||
6724 | else if (strcasecmp (new_token.str, "SHORT") == 0) | |
6725 | new_token.code = T_SHORT; | |
6726 | ||
6727 | else if (strcasecmp (new_token.str, "OFFSET") == 0) | |
6728 | { | |
6729 | new_token.code = T_OFFSET; | |
6730 | ||
6731 | /* ??? This is not mentioned in the MASM grammar but gcc | |
6732 | makes use of it with -mintel-syntax. OFFSET may be | |
6733 | followed by FLAT: */ | |
6734 | if (strncasecmp (q, " FLAT:", 6) == 0) | |
6735 | strcat (new_token.str, " FLAT:"); | |
6736 | } | |
6737 | ||
6738 | /* ??? This is not mentioned in the MASM grammar. */ | |
6739 | else if (strcasecmp (new_token.str, "FLAT") == 0) | |
a724f0f4 JB |
6740 | { |
6741 | new_token.code = T_OFFSET; | |
6742 | if (*q == ':') | |
6743 | strcat (new_token.str, ":"); | |
6744 | else | |
6745 | as_bad (_("`:' expected")); | |
6746 | } | |
64a0c779 DN |
6747 | |
6748 | else | |
6749 | new_token.code = T_ID; | |
6750 | } | |
6751 | } | |
6752 | ||
9306ca4a JB |
6753 | else if (strchr ("+-/*%|&^:[]()~", *intel_parser.op_string)) |
6754 | { | |
6755 | new_token.code = *intel_parser.op_string; | |
6756 | new_token.str[0] = *intel_parser.op_string; | |
6757 | new_token.str[1] = '\0'; | |
6758 | } | |
6759 | ||
6760 | else if (strchr ("<>", *intel_parser.op_string) | |
6761 | && *intel_parser.op_string == *(intel_parser.op_string + 1)) | |
6762 | { | |
6763 | new_token.code = *intel_parser.op_string == '<' ? T_SHL : T_SHR; | |
6764 | new_token.str[0] = *intel_parser.op_string; | |
6765 | new_token.str[1] = *intel_parser.op_string; | |
6766 | new_token.str[2] = '\0'; | |
6767 | } | |
6768 | ||
64a0c779 | 6769 | else |
0477af35 | 6770 | as_bad (_("Unrecognized token `%s'"), intel_parser.op_string); |
64a0c779 DN |
6771 | |
6772 | intel_parser.op_string += strlen (new_token.str); | |
6773 | cur_token = new_token; | |
6774 | } | |
6775 | ||
64a0c779 DN |
6776 | /* Put cur_token back into the token stream and make cur_token point to |
6777 | prev_token. */ | |
6778 | static void | |
6779 | intel_putback_token () | |
6780 | { | |
a724f0f4 JB |
6781 | if (cur_token.code != T_NIL) |
6782 | { | |
6783 | intel_parser.op_string -= strlen (cur_token.str); | |
6784 | free (cur_token.str); | |
6785 | } | |
64a0c779 | 6786 | cur_token = prev_token; |
4a1805b1 | 6787 | |
64a0c779 DN |
6788 | /* Forget prev_token. */ |
6789 | prev_token.code = T_NIL; | |
6790 | prev_token.reg = NULL; | |
6791 | prev_token.str = NULL; | |
6792 | } | |
54cfded0 | 6793 | |
a4447b93 | 6794 | int |
54cfded0 AM |
6795 | tc_x86_regname_to_dw2regnum (const char *regname) |
6796 | { | |
6797 | unsigned int regnum; | |
6798 | unsigned int regnames_count; | |
089dfecd | 6799 | static const char *const regnames_32[] = |
54cfded0 | 6800 | { |
a4447b93 RH |
6801 | "eax", "ecx", "edx", "ebx", |
6802 | "esp", "ebp", "esi", "edi", | |
089dfecd JB |
6803 | "eip", "eflags", NULL, |
6804 | "st0", "st1", "st2", "st3", | |
6805 | "st4", "st5", "st6", "st7", | |
6806 | NULL, NULL, | |
6807 | "xmm0", "xmm1", "xmm2", "xmm3", | |
6808 | "xmm4", "xmm5", "xmm6", "xmm7", | |
6809 | "mm0", "mm1", "mm2", "mm3", | |
6810 | "mm4", "mm5", "mm6", "mm7" | |
54cfded0 | 6811 | }; |
089dfecd | 6812 | static const char *const regnames_64[] = |
54cfded0 | 6813 | { |
089dfecd JB |
6814 | "rax", "rdx", "rcx", "rbx", |
6815 | "rsi", "rdi", "rbp", "rsp", | |
6816 | "r8", "r9", "r10", "r11", | |
54cfded0 | 6817 | "r12", "r13", "r14", "r15", |
089dfecd JB |
6818 | "rip", |
6819 | "xmm0", "xmm1", "xmm2", "xmm3", | |
6820 | "xmm4", "xmm5", "xmm6", "xmm7", | |
6821 | "xmm8", "xmm9", "xmm10", "xmm11", | |
6822 | "xmm12", "xmm13", "xmm14", "xmm15", | |
6823 | "st0", "st1", "st2", "st3", | |
6824 | "st4", "st5", "st6", "st7", | |
6825 | "mm0", "mm1", "mm2", "mm3", | |
6826 | "mm4", "mm5", "mm6", "mm7" | |
54cfded0 | 6827 | }; |
089dfecd | 6828 | const char *const *regnames; |
54cfded0 AM |
6829 | |
6830 | if (flag_code == CODE_64BIT) | |
6831 | { | |
6832 | regnames = regnames_64; | |
0cea6190 | 6833 | regnames_count = ARRAY_SIZE (regnames_64); |
54cfded0 AM |
6834 | } |
6835 | else | |
6836 | { | |
6837 | regnames = regnames_32; | |
0cea6190 | 6838 | regnames_count = ARRAY_SIZE (regnames_32); |
54cfded0 AM |
6839 | } |
6840 | ||
6841 | for (regnum = 0; regnum < regnames_count; regnum++) | |
089dfecd JB |
6842 | if (regnames[regnum] != NULL |
6843 | && strcmp (regname, regnames[regnum]) == 0) | |
54cfded0 AM |
6844 | return regnum; |
6845 | ||
54cfded0 AM |
6846 | return -1; |
6847 | } | |
6848 | ||
6849 | void | |
6850 | tc_x86_frame_initial_instructions (void) | |
6851 | { | |
a4447b93 RH |
6852 | static unsigned int sp_regno; |
6853 | ||
6854 | if (!sp_regno) | |
6855 | sp_regno = tc_x86_regname_to_dw2regnum (flag_code == CODE_64BIT | |
6856 | ? "rsp" : "esp"); | |
6857 | ||
6858 | cfi_add_CFA_def_cfa (sp_regno, -x86_cie_data_alignment); | |
6859 | cfi_add_CFA_offset (x86_dwarf2_return_column, x86_cie_data_alignment); | |
54cfded0 | 6860 | } |
d2b2c203 DJ |
6861 | |
6862 | int | |
6863 | i386_elf_section_type (const char *str, size_t len) | |
6864 | { | |
6865 | if (flag_code == CODE_64BIT | |
6866 | && len == sizeof ("unwind") - 1 | |
6867 | && strncmp (str, "unwind", 6) == 0) | |
6868 | return SHT_X86_64_UNWIND; | |
6869 | ||
6870 | return -1; | |
6871 | } | |
bb41ade5 AM |
6872 | |
6873 | #ifdef TE_PE | |
6874 | void | |
6875 | tc_pe_dwarf2_emit_offset (symbolS *symbol, unsigned int size) | |
6876 | { | |
6877 | expressionS expr; | |
6878 | ||
6879 | expr.X_op = O_secrel; | |
6880 | expr.X_add_symbol = symbol; | |
6881 | expr.X_add_number = 0; | |
6882 | emit_expr (&expr, size); | |
6883 | } | |
6884 | #endif |