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ee86248c | 1 | /* tc-i386.c -- Assemble Intel syntax code for ix86/x86-64 |
fd67aa11 | 2 | Copyright (C) 2009-2024 Free Software Foundation, Inc. |
ee86248c JB |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
20 | ||
21 | static struct | |
22 | { | |
23 | operatorT op_modifier; /* Operand modifier. */ | |
24 | int is_mem; /* 1 if operand is memory reference. */ | |
25303607 | 25 | int is_indirect; /* 1 if operand is indirect reference. */ |
6cee4cda | 26 | int has_offset; /* 1 if operand has offset. */ |
ee86248c JB |
27 | unsigned int in_offset; /* >=1 if processing operand of offset. */ |
28 | unsigned int in_bracket; /* >=1 if processing operand in brackets. */ | |
33eaf5de | 29 | unsigned int in_scale; /* >=1 if processing multiplication operand |
ee86248c JB |
30 | * in brackets. */ |
31 | i386_operand_type reloc_types; /* Value obtained from lex_got(). */ | |
32 | const reg_entry *base; /* Base register (if any). */ | |
33 | const reg_entry *index; /* Index register (if any). */ | |
34 | offsetT scale_factor; /* Accumulated scale factor. */ | |
35 | symbolS *seg; | |
36 | } | |
37 | intel_state; | |
38 | ||
39 | /* offset X_add_symbol */ | |
40 | #define O_offset O_md32 | |
7ac3eb25 L |
41 | /* offset X_add_symbol */ |
42 | #define O_short O_md31 | |
43 | /* near ptr X_add_symbol */ | |
44 | #define O_near_ptr O_md30 | |
45 | /* far ptr X_add_symbol */ | |
46 | #define O_far_ptr O_md29 | |
ee86248c | 47 | /* byte ptr X_add_symbol */ |
7ac3eb25 | 48 | #define O_byte_ptr O_md28 |
ee86248c | 49 | /* word ptr X_add_symbol */ |
7ac3eb25 | 50 | #define O_word_ptr O_md27 |
ee86248c | 51 | /* dword ptr X_add_symbol */ |
7ac3eb25 | 52 | #define O_dword_ptr O_md26 |
ee86248c | 53 | /* qword ptr X_add_symbol */ |
7ac3eb25 | 54 | #define O_qword_ptr O_md25 |
f2f5811f JB |
55 | /* mmword ptr X_add_symbol */ |
56 | #define O_mmword_ptr O_qword_ptr | |
ee86248c | 57 | /* fword ptr X_add_symbol */ |
7456d03d | 58 | #define O_fword_ptr O_md24 |
ee86248c | 59 | /* tbyte ptr X_add_symbol */ |
7456d03d JB |
60 | #define O_tbyte_ptr O_md23 |
61 | /* oword ptr X_add_symbol */ | |
62 | #define O_oword_ptr O_md22 | |
ee86248c | 63 | /* xmmword ptr X_add_symbol */ |
7456d03d | 64 | #define O_xmmword_ptr O_oword_ptr |
ee86248c | 65 | /* ymmword ptr X_add_symbol */ |
7456d03d | 66 | #define O_ymmword_ptr O_md21 |
43234a1e | 67 | /* zmmword ptr X_add_symbol */ |
7456d03d | 68 | #define O_zmmword_ptr O_md20 |
ee86248c JB |
69 | |
70 | static struct | |
71 | { | |
72 | const char *name; | |
1e9cc1c2 | 73 | operatorT op; |
ee86248c JB |
74 | unsigned int operands; |
75 | } | |
76 | const i386_operators[] = | |
77 | { | |
78 | { "and", O_bit_and, 2 }, | |
79 | { "eq", O_eq, 2 }, | |
80 | { "ge", O_ge, 2 }, | |
81 | { "gt", O_gt, 2 }, | |
82 | { "le", O_le, 2 }, | |
83 | { "lt", O_lt, 2 }, | |
84 | { "mod", O_modulus, 2 }, | |
85 | { "ne", O_ne, 2 }, | |
86 | { "not", O_bit_not, 1 }, | |
87 | { "offset", O_offset, 1 }, | |
88 | { "or", O_bit_inclusive_or, 2 }, | |
89 | { "shl", O_left_shift, 2 }, | |
90 | { "short", O_short, 1 }, | |
91 | { "shr", O_right_shift, 2 }, | |
92 | { "xor", O_bit_exclusive_or, 2 }, | |
93 | { NULL, O_illegal, 0 } | |
94 | }; | |
95 | ||
96 | static struct | |
97 | { | |
98 | const char *name; | |
1e9cc1c2 | 99 | operatorT op; |
ee86248c JB |
100 | unsigned short sz[3]; |
101 | } | |
102 | const i386_types[] = | |
103 | { | |
104 | #define I386_TYPE(t, n) { #t, O_##t##_ptr, { n, n, n } } | |
105 | I386_TYPE(byte, 1), | |
106 | I386_TYPE(word, 2), | |
107 | I386_TYPE(dword, 4), | |
108 | I386_TYPE(fword, 6), | |
109 | I386_TYPE(qword, 8), | |
f2f5811f | 110 | I386_TYPE(mmword, 8), |
ee86248c JB |
111 | I386_TYPE(tbyte, 10), |
112 | I386_TYPE(oword, 16), | |
113 | I386_TYPE(xmmword, 16), | |
114 | I386_TYPE(ymmword, 32), | |
43234a1e | 115 | I386_TYPE(zmmword, 64), |
ee86248c JB |
116 | #undef I386_TYPE |
117 | { "near", O_near_ptr, { 0xff04, 0xff02, 0xff08 } }, | |
118 | { "far", O_far_ptr, { 0xff06, 0xff05, 0xff06 } }, | |
119 | { NULL, O_illegal, { 0, 0, 0 } } | |
120 | }; | |
121 | ||
122 | operatorT i386_operator (const char *name, unsigned int operands, char *pc) | |
123 | { | |
124 | unsigned int j; | |
125 | ||
b3983e5f JB |
126 | #ifdef SVR4_COMMENT_CHARS |
127 | if (!name && operands == 2 && *input_line_pointer == '\\') | |
128 | switch (input_line_pointer[1]) | |
129 | { | |
130 | case '/': input_line_pointer += 2; return O_divide; | |
131 | case '%': input_line_pointer += 2; return O_modulus; | |
132 | case '*': input_line_pointer += 2; return O_multiply; | |
133 | } | |
134 | #endif | |
135 | ||
ee86248c JB |
136 | if (!intel_syntax) |
137 | return O_absent; | |
138 | ||
139 | if (!name) | |
140 | { | |
141 | if (operands != 2) | |
142 | return O_illegal; | |
143 | switch (*input_line_pointer) | |
144 | { | |
145 | case ':': | |
146 | ++input_line_pointer; | |
147 | return O_full_ptr; | |
148 | case '[': | |
149 | ++input_line_pointer; | |
150 | return O_index; | |
151 | case '@': | |
152 | if (this_operand >= 0 && i.reloc[this_operand] == NO_RELOC) | |
153 | { | |
154 | int adjust = 0; | |
155 | char *gotfree_input_line = lex_got (&i.reloc[this_operand], | |
156 | &adjust, | |
d258b828 | 157 | &intel_state.reloc_types); |
ee86248c JB |
158 | |
159 | if (!gotfree_input_line) | |
160 | break; | |
161 | free (gotfree_input_line); | |
162 | *input_line_pointer++ = '+'; | |
163 | memset (input_line_pointer, '0', adjust - 1); | |
164 | input_line_pointer[adjust - 1] = ' '; | |
165 | return O_add; | |
166 | } | |
167 | break; | |
168 | } | |
169 | return O_illegal; | |
170 | } | |
171 | ||
6acf9130 JB |
172 | /* See the quotation related comment in i386_parse_name(). */ |
173 | if (*pc == '"') | |
174 | return O_absent; | |
175 | ||
ee86248c | 176 | for (j = 0; i386_operators[j].name; ++j) |
91d6fa6a | 177 | if (strcasecmp (i386_operators[j].name, name) == 0) |
ee86248c JB |
178 | { |
179 | if (i386_operators[j].operands | |
180 | && i386_operators[j].operands != operands) | |
181 | return O_illegal; | |
1e9cc1c2 | 182 | return i386_operators[j].op; |
ee86248c JB |
183 | } |
184 | ||
185 | for (j = 0; i386_types[j].name; ++j) | |
91d6fa6a | 186 | if (strcasecmp (i386_types[j].name, name) == 0) |
ee86248c | 187 | break; |
d02603dc | 188 | |
ee86248c JB |
189 | if (i386_types[j].name && *pc == ' ') |
190 | { | |
a4f8c177 | 191 | const char *start = ++input_line_pointer; |
d02603dc | 192 | char *pname; |
a4f8c177 | 193 | char c = get_symbol_name (&pname); |
d02603dc | 194 | |
a4f8c177 | 195 | if (strcasecmp (pname, "ptr") == 0 && (c != '"' || pname == start)) |
ee86248c | 196 | { |
91d6fa6a | 197 | pname[-1] = *pc; |
ee86248c JB |
198 | *pc = c; |
199 | if (intel_syntax > 0 || operands != 1) | |
200 | return O_illegal; | |
1e9cc1c2 | 201 | return i386_types[j].op; |
ee86248c JB |
202 | } |
203 | ||
a4f8c177 | 204 | if (strcasecmp (pname, "bcst") == 0 && (c != '"' || pname == start)) |
a5748e0d | 205 | { |
a5748e0d JB |
206 | pname[-1] = *pc; |
207 | *pc = c; | |
208 | if (intel_syntax > 0 || operands != 1 | |
209 | || i386_types[j].sz[0] > 8 | |
210 | || (i386_types[j].sz[0] & (i386_types[j].sz[0] - 1))) | |
211 | return O_illegal; | |
e3bfcef3 | 212 | switch (pp.encoding) |
eb3f3841 JB |
213 | { |
214 | case encoding_default: | |
215 | case encoding_egpr: | |
e3bfcef3 | 216 | pp.encoding = encoding_evex; |
eb3f3841 JB |
217 | break; |
218 | case encoding_evex: | |
219 | case encoding_evex512: | |
220 | break; | |
221 | default: | |
222 | return O_illegal; | |
223 | } | |
a5748e0d JB |
224 | if (!i.broadcast.bytes && !i.broadcast.type) |
225 | { | |
226 | i.broadcast.bytes = i386_types[j].sz[0]; | |
227 | i.broadcast.operand = this_operand; | |
228 | } | |
229 | return i386_types[j].op; | |
230 | } | |
231 | ||
d02603dc | 232 | (void) restore_line_pointer (c); |
91d6fa6a | 233 | input_line_pointer = pname - 1; |
ee86248c JB |
234 | } |
235 | ||
236 | return O_absent; | |
237 | } | |
238 | ||
239 | static int i386_intel_parse_name (const char *name, expressionS *e) | |
240 | { | |
91d6fa6a | 241 | unsigned int j; |
ee86248c | 242 | |
b7adb16d JB |
243 | if (! strcmp (name, "$")) |
244 | { | |
245 | current_location (e); | |
246 | return 1; | |
247 | } | |
248 | ||
91d6fa6a NC |
249 | for (j = 0; i386_types[j].name; ++j) |
250 | if (strcasecmp(i386_types[j].name, name) == 0) | |
ee86248c JB |
251 | { |
252 | e->X_op = O_constant; | |
91d6fa6a | 253 | e->X_add_number = i386_types[j].sz[flag_code]; |
ee86248c JB |
254 | e->X_add_symbol = NULL; |
255 | e->X_op_symbol = NULL; | |
256 | return 1; | |
257 | } | |
258 | ||
259 | return 0; | |
260 | } | |
261 | ||
91d6fa6a | 262 | static INLINE int i386_intel_check (const reg_entry *rreg, |
ee86248c | 263 | const reg_entry *base, |
91d6fa6a | 264 | const reg_entry *iindex) |
ee86248c | 265 | { |
f09c1772 L |
266 | if ((this_operand >= 0 |
267 | && rreg != i.op[this_operand].regs) | |
268 | || base != intel_state.base | |
269 | || iindex != intel_state.index) | |
ee86248c JB |
270 | { |
271 | as_bad (_("invalid use of register")); | |
272 | return 0; | |
273 | } | |
274 | return 1; | |
275 | } | |
276 | ||
277 | static INLINE void i386_intel_fold (expressionS *e, symbolS *sym) | |
278 | { | |
27dee630 | 279 | expressionS *exp = symbol_get_value_expression (sym); |
ee86248c JB |
280 | if (S_GET_SEGMENT (sym) == absolute_section) |
281 | { | |
282 | offsetT val = e->X_add_number; | |
283 | ||
27dee630 | 284 | *e = *exp; |
ee86248c JB |
285 | e->X_add_number += val; |
286 | } | |
287 | else | |
288 | { | |
27dee630 L |
289 | if (exp->X_op == O_symbol |
290 | && strcmp (S_GET_NAME (exp->X_add_symbol), | |
291 | GLOBAL_OFFSET_TABLE_NAME) == 0) | |
292 | sym = exp->X_add_symbol; | |
ee86248c JB |
293 | e->X_add_symbol = sym; |
294 | e->X_op_symbol = NULL; | |
295 | e->X_op = O_symbol; | |
296 | } | |
297 | } | |
298 | ||
3c7b9c2c L |
299 | static int |
300 | i386_intel_simplify_register (expressionS *e) | |
301 | { | |
302 | int reg_num; | |
303 | ||
304 | if (this_operand < 0 || intel_state.in_offset) | |
305 | { | |
306 | as_bad (_("invalid use of register")); | |
307 | return 0; | |
308 | } | |
309 | ||
310 | if (e->X_op == O_register) | |
311 | reg_num = e->X_add_number; | |
312 | else | |
313 | reg_num = e->X_md - 1; | |
314 | ||
35015cd1 NC |
315 | if (reg_num < 0 || reg_num >= (int) i386_regtab_size) |
316 | { | |
317 | as_bad (_("invalid register number")); | |
318 | return 0; | |
319 | } | |
320 | ||
4faaa10f JB |
321 | if (!check_register (&i386_regtab[reg_num])) |
322 | { | |
323 | as_bad (_("register '%s%s' cannot be used here"), | |
324 | register_prefix, i386_regtab[reg_num].reg_name); | |
325 | return 0; | |
326 | } | |
327 | ||
3c7b9c2c L |
328 | if (!intel_state.in_bracket) |
329 | { | |
330 | if (i.op[this_operand].regs) | |
331 | { | |
332 | as_bad (_("invalid use of register")); | |
333 | return 0; | |
334 | } | |
0ff3b7d0 JB |
335 | if ((i386_regtab[reg_num].reg_type.bitfield.class == SReg |
336 | && i386_regtab[reg_num].reg_num == RegFlat) | |
337 | || (dot_insn () | |
338 | && i386_regtab[reg_num].reg_type.bitfield.class == ClassNone)) | |
3c7b9c2c L |
339 | { |
340 | as_bad (_("invalid use of pseudo-register")); | |
341 | return 0; | |
342 | } | |
343 | i.op[this_operand].regs = i386_regtab + reg_num; | |
344 | } | |
9e2934f7 | 345 | else if (!intel_state.index |
1b54b8d7 JB |
346 | && (i386_regtab[reg_num].reg_type.bitfield.xmmword |
347 | || i386_regtab[reg_num].reg_type.bitfield.ymmword | |
348 | || i386_regtab[reg_num].reg_type.bitfield.zmmword | |
e968fc9b | 349 | || i386_regtab[reg_num].reg_num == RegIZ)) |
9e2934f7 | 350 | intel_state.index = i386_regtab + reg_num; |
3c7b9c2c L |
351 | else if (!intel_state.base && !intel_state.in_scale) |
352 | intel_state.base = i386_regtab + reg_num; | |
353 | else if (!intel_state.index) | |
9e2934f7 | 354 | { |
d3b01414 | 355 | const insn_template *t = current_templates.start; |
a152332d | 356 | |
9e2934f7 | 357 | if (intel_state.in_scale |
c47b4d71 | 358 | || i386_regtab[reg_num].reg_type.bitfield.baseindex |
0ff3b7d0 | 359 | || dot_insn () |
c47b4d71 JB |
360 | || t->mnem_off == MN_bndmk |
361 | || t->mnem_off == MN_bndldx | |
362 | || t->mnem_off == MN_bndstx) | |
9e2934f7 JB |
363 | intel_state.index = i386_regtab + reg_num; |
364 | else | |
365 | { | |
366 | /* Convert base to index and make ESP/RSP the base. */ | |
367 | intel_state.index = intel_state.base; | |
368 | intel_state.base = i386_regtab + reg_num; | |
369 | } | |
370 | } | |
3c7b9c2c L |
371 | else |
372 | { | |
373 | /* esp is invalid as index */ | |
34684862 | 374 | intel_state.index = reg_eax + ESP_REG_NUM; |
3c7b9c2c L |
375 | } |
376 | return 2; | |
377 | } | |
378 | ||
2fbbadc2 AM |
379 | static int |
380 | i386_intel_simplify_symbol (symbolS *sym) | |
ee86248c | 381 | { |
2fbbadc2 AM |
382 | if (symbol_resolving_p (sym)) |
383 | return 1; | |
ee86248c | 384 | |
2fbbadc2 AM |
385 | symbol_mark_resolving (sym); |
386 | int ret = i386_intel_simplify (symbol_get_value_expression (sym)); | |
ee86248c | 387 | if (ret == 2) |
2fbbadc2 AM |
388 | { |
389 | S_SET_SEGMENT (sym, absolute_section); | |
390 | ret = 1; | |
391 | } | |
392 | symbol_clear_resolving (sym); | |
ee86248c JB |
393 | return ret; |
394 | } | |
395 | ||
2fbbadc2 AM |
396 | static int |
397 | i386_intel_simplify (expressionS *e) | |
ee86248c | 398 | { |
f09c1772 L |
399 | const reg_entry *the_reg = (this_operand >= 0 |
400 | ? i.op[this_operand].regs : NULL); | |
ee86248c | 401 | const reg_entry *base = intel_state.base; |
91d6fa6a | 402 | const reg_entry *state_index = intel_state.index; |
ee86248c JB |
403 | int ret; |
404 | ||
405 | if (!intel_syntax) | |
406 | return 1; | |
407 | ||
408 | switch (e->X_op) | |
409 | { | |
410 | case O_index: | |
411 | if (e->X_add_symbol) | |
412 | { | |
413 | if (!i386_intel_simplify_symbol (e->X_add_symbol) | |
f09c1772 L |
414 | || !i386_intel_check(the_reg, intel_state.base, |
415 | intel_state.index)) | |
5bb3703f | 416 | return 0; |
ee86248c JB |
417 | } |
418 | if (!intel_state.in_offset) | |
419 | ++intel_state.in_bracket; | |
420 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
421 | if (!intel_state.in_offset) | |
422 | --intel_state.in_bracket; | |
423 | if (!ret) | |
424 | return 0; | |
425 | if (e->X_add_symbol) | |
426 | e->X_op = O_add; | |
427 | else | |
428 | i386_intel_fold (e, e->X_op_symbol); | |
429 | break; | |
430 | ||
431 | case O_offset: | |
6cee4cda | 432 | intel_state.has_offset = 1; |
ee86248c JB |
433 | ++intel_state.in_offset; |
434 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
435 | --intel_state.in_offset; | |
91d6fa6a | 436 | if (!ret || !i386_intel_check(the_reg, base, state_index)) |
ee86248c JB |
437 | return 0; |
438 | i386_intel_fold (e, e->X_add_symbol); | |
439 | return ret; | |
440 | ||
441 | case O_byte_ptr: | |
442 | case O_word_ptr: | |
443 | case O_dword_ptr: | |
444 | case O_fword_ptr: | |
f2f5811f | 445 | case O_qword_ptr: /* O_mmword_ptr */ |
ee86248c | 446 | case O_tbyte_ptr: |
7456d03d | 447 | case O_oword_ptr: /* O_xmmword_ptr */ |
ee86248c | 448 | case O_ymmword_ptr: |
43234a1e | 449 | case O_zmmword_ptr: |
ee86248c JB |
450 | case O_near_ptr: |
451 | case O_far_ptr: | |
452 | if (intel_state.op_modifier == O_absent) | |
453 | intel_state.op_modifier = e->X_op; | |
454 | /* FALLTHROUGH */ | |
455 | case O_short: | |
f09c1772 L |
456 | if (symbol_get_value_expression (e->X_add_symbol)->X_op |
457 | == O_register) | |
ee86248c JB |
458 | { |
459 | as_bad (_("invalid use of register")); | |
460 | return 0; | |
461 | } | |
462 | if (!i386_intel_simplify_symbol (e->X_add_symbol)) | |
463 | return 0; | |
464 | i386_intel_fold (e, e->X_add_symbol); | |
465 | break; | |
466 | ||
467 | case O_full_ptr: | |
f09c1772 L |
468 | if (symbol_get_value_expression (e->X_op_symbol)->X_op |
469 | == O_register) | |
ee86248c JB |
470 | { |
471 | as_bad (_("invalid use of register")); | |
472 | return 0; | |
473 | } | |
474 | if (!i386_intel_simplify_symbol (e->X_op_symbol) | |
f09c1772 L |
475 | || !i386_intel_check(the_reg, intel_state.base, |
476 | intel_state.index)) | |
ee86248c JB |
477 | return 0; |
478 | if (!intel_state.in_offset) | |
fd4e0347 JB |
479 | { |
480 | if (!intel_state.seg) | |
481 | intel_state.seg = e->X_add_symbol; | |
482 | else | |
483 | { | |
484 | expressionS exp; | |
485 | ||
486 | exp.X_op = O_full_ptr; | |
487 | exp.X_add_symbol = e->X_add_symbol; | |
488 | exp.X_op_symbol = intel_state.seg; | |
489 | intel_state.seg = make_expr_symbol (&exp); | |
490 | } | |
491 | } | |
ee86248c JB |
492 | i386_intel_fold (e, e->X_op_symbol); |
493 | break; | |
494 | ||
ee86248c JB |
495 | case O_multiply: |
496 | if (this_operand >= 0 && intel_state.in_bracket) | |
497 | { | |
498 | expressionS *scale = NULL; | |
c2a5914e | 499 | int has_index = (intel_state.index != NULL); |
ee86248c JB |
500 | |
501 | if (!intel_state.in_scale++) | |
502 | intel_state.scale_factor = 1; | |
503 | ||
504 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
c2a5914e | 505 | if (ret && !has_index && intel_state.index) |
ee86248c JB |
506 | scale = symbol_get_value_expression (e->X_op_symbol); |
507 | ||
508 | if (ret) | |
509 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
c2a5914e | 510 | if (ret && !scale && !has_index && intel_state.index) |
ee86248c JB |
511 | scale = symbol_get_value_expression (e->X_add_symbol); |
512 | ||
c2a5914e | 513 | if (ret && scale) |
ee86248c JB |
514 | { |
515 | resolve_expression (scale); | |
516 | if (scale->X_op != O_constant | |
dc821c5f | 517 | || intel_state.index->reg_type.bitfield.word) |
ee86248c JB |
518 | scale->X_add_number = 0; |
519 | intel_state.scale_factor *= scale->X_add_number; | |
520 | } | |
521 | ||
522 | --intel_state.in_scale; | |
523 | if (!ret) | |
524 | return 0; | |
525 | ||
526 | if (!intel_state.in_scale) | |
527 | switch (intel_state.scale_factor) | |
528 | { | |
529 | case 1: | |
530 | i.log2_scale_factor = 0; | |
531 | break; | |
532 | case 2: | |
533 | i.log2_scale_factor = 1; | |
534 | break; | |
535 | case 4: | |
536 | i.log2_scale_factor = 2; | |
537 | break; | |
538 | case 8: | |
539 | i.log2_scale_factor = 3; | |
540 | break; | |
541 | default: | |
542 | /* esp is invalid as index */ | |
34684862 | 543 | intel_state.index = reg_eax + ESP_REG_NUM; |
ee86248c JB |
544 | break; |
545 | } | |
546 | ||
547 | break; | |
548 | } | |
92b4f90c | 549 | goto fallthrough; |
3c7b9c2c L |
550 | |
551 | case O_register: | |
552 | ret = i386_intel_simplify_register (e); | |
553 | if (ret == 2) | |
554 | { | |
555 | gas_assert (e->X_add_number < (unsigned short) -1); | |
556 | e->X_md = (unsigned short) e->X_add_number + 1; | |
557 | e->X_op = O_constant; | |
558 | e->X_add_number = 0; | |
559 | } | |
560 | return ret; | |
561 | ||
562 | case O_constant: | |
563 | if (e->X_md) | |
564 | return i386_intel_simplify_register (e); | |
565 | ||
ee86248c JB |
566 | /* FALLTHROUGH */ |
567 | default: | |
dc1e8a47 | 568 | fallthrough: |
f09c1772 L |
569 | if (e->X_add_symbol |
570 | && !i386_intel_simplify_symbol (e->X_add_symbol)) | |
ee86248c | 571 | return 0; |
64d23078 JB |
572 | if (!the_reg && this_operand >= 0 |
573 | && e->X_op == O_symbol && !e->X_add_number) | |
574 | the_reg = i.op[this_operand].regs; | |
ee86248c JB |
575 | if (e->X_op == O_add || e->X_op == O_subtract) |
576 | { | |
577 | base = intel_state.base; | |
91d6fa6a | 578 | state_index = intel_state.index; |
ee86248c | 579 | } |
91d6fa6a | 580 | if (!i386_intel_check (the_reg, base, state_index) |
f09c1772 L |
581 | || (e->X_op_symbol |
582 | && !i386_intel_simplify_symbol (e->X_op_symbol)) | |
91d6fa6a | 583 | || !i386_intel_check (the_reg, |
f09c1772 L |
584 | (e->X_op != O_add |
585 | ? base : intel_state.base), | |
586 | (e->X_op != O_add | |
587 | ? state_index : intel_state.index))) | |
ee86248c JB |
588 | return 0; |
589 | break; | |
590 | } | |
591 | ||
f09c1772 L |
592 | if (this_operand >= 0 |
593 | && e->X_op == O_symbol | |
594 | && !intel_state.in_offset) | |
ee86248c JB |
595 | { |
596 | segT seg = S_GET_SEGMENT (e->X_add_symbol); | |
597 | ||
598 | if (seg != absolute_section | |
599 | && seg != reg_section | |
600 | && seg != expr_section) | |
601 | intel_state.is_mem |= 2 - !intel_state.in_bracket; | |
602 | } | |
603 | ||
604 | return 1; | |
605 | } | |
606 | ||
607 | int i386_need_index_operator (void) | |
608 | { | |
609 | return intel_syntax < 0; | |
610 | } | |
611 | ||
612 | static int | |
613 | i386_intel_operand (char *operand_string, int got_a_float) | |
614 | { | |
615 | char *saved_input_line_pointer, *buf; | |
616 | segT exp_seg; | |
617 | expressionS exp, *expP; | |
618 | char suffix = 0; | |
7063667e | 619 | bool rc_sae_modifier = i.rounding.type != rc_none && i.rounding.modifier; |
ee86248c JB |
620 | int ret; |
621 | ||
43234a1e L |
622 | /* Handle vector immediates. */ |
623 | if (RC_SAE_immediate (operand_string)) | |
cf665fee JB |
624 | { |
625 | if (i.imm_operands) | |
626 | { | |
627 | as_bad (_("`%s': RC/SAE operand must precede immediate operands"), | |
d3b01414 | 628 | insn_name (current_templates.start)); |
cf665fee JB |
629 | return 0; |
630 | } | |
631 | ||
632 | return 1; | |
633 | } | |
43234a1e | 634 | |
ee86248c JB |
635 | /* Initialize state structure. */ |
636 | intel_state.op_modifier = O_absent; | |
637 | intel_state.is_mem = 0; | |
25303607 | 638 | intel_state.is_indirect = 0; |
1acf546e | 639 | intel_state.has_offset = 0; |
ee86248c JB |
640 | intel_state.base = NULL; |
641 | intel_state.index = NULL; | |
642 | intel_state.seg = NULL; | |
643 | operand_type_set (&intel_state.reloc_types, ~0); | |
9c2799c2 NC |
644 | gas_assert (!intel_state.in_offset); |
645 | gas_assert (!intel_state.in_bracket); | |
646 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
647 | |
648 | saved_input_line_pointer = input_line_pointer; | |
649 | input_line_pointer = buf = xstrdup (operand_string); | |
650 | ||
651 | intel_syntax = -1; | |
5cc00775 | 652 | expr_mode = expr_operator_none; |
ee86248c JB |
653 | memset (&exp, 0, sizeof(exp)); |
654 | exp_seg = expression (&exp); | |
655 | ret = i386_intel_simplify (&exp); | |
656 | intel_syntax = 1; | |
657 | ||
658 | SKIP_WHITESPACE (); | |
43234a1e L |
659 | |
660 | /* Handle vector operations. */ | |
661 | if (*input_line_pointer == '{') | |
662 | { | |
f70c6814 | 663 | char *end = check_VecOperations (input_line_pointer); |
43234a1e L |
664 | if (end) |
665 | input_line_pointer = end; | |
666 | else | |
667 | ret = 0; | |
668 | } | |
669 | ||
ee86248c JB |
670 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
671 | { | |
38bf5113 JB |
672 | if (ret) |
673 | as_bad (_("junk `%s' after expression"), input_line_pointer); | |
ee86248c JB |
674 | ret = 0; |
675 | } | |
676 | else if (exp.X_op == O_illegal || exp.X_op == O_absent) | |
677 | { | |
38bf5113 JB |
678 | if (ret) |
679 | as_bad (_("invalid expression")); | |
ee86248c JB |
680 | ret = 0; |
681 | } | |
6cee4cda L |
682 | else if (!intel_state.has_offset |
683 | && input_line_pointer > buf | |
684 | && *(input_line_pointer - 1) == ']') | |
25303607 L |
685 | { |
686 | intel_state.is_mem |= 1; | |
687 | intel_state.is_indirect = 1; | |
688 | } | |
ee86248c JB |
689 | |
690 | input_line_pointer = saved_input_line_pointer; | |
691 | free (buf); | |
692 | ||
9c2799c2 NC |
693 | gas_assert (!intel_state.in_offset); |
694 | gas_assert (!intel_state.in_bracket); | |
695 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
696 | |
697 | if (!ret) | |
698 | return 0; | |
699 | ||
700 | if (intel_state.op_modifier != O_absent | |
d3b01414 | 701 | && current_templates.start->mnem_off != MN_lea) |
ee86248c JB |
702 | { |
703 | i.types[this_operand].bitfield.unspecified = 0; | |
704 | ||
705 | switch (intel_state.op_modifier) | |
706 | { | |
707 | case O_byte_ptr: | |
708 | i.types[this_operand].bitfield.byte = 1; | |
709 | suffix = BYTE_MNEM_SUFFIX; | |
710 | break; | |
711 | ||
712 | case O_word_ptr: | |
713 | i.types[this_operand].bitfield.word = 1; | |
37404387 | 714 | if (got_a_float == 2) /* "fi..." */ |
ee86248c | 715 | suffix = SHORT_MNEM_SUFFIX; |
d3b01414 JB |
716 | else if (current_templates.start->mnem_off != MN_lar |
717 | && current_templates.start->mnem_off != MN_lsl | |
718 | && current_templates.start->mnem_off != MN_arpl) | |
ee86248c JB |
719 | suffix = WORD_MNEM_SUFFIX; |
720 | break; | |
721 | ||
722 | case O_dword_ptr: | |
723 | i.types[this_operand].bitfield.dword = 1; | |
d3b01414 JB |
724 | if ((insn_name (current_templates.start)[0] == 'l' |
725 | && insn_name (current_templates.start)[2] == 's' | |
726 | && insn_name (current_templates.start)[3] == 0) | |
727 | || current_templates.start->mnem_off == MN_bound) | |
ee86248c | 728 | suffix = WORD_MNEM_SUFFIX; |
d488367a | 729 | else if (flag_code != CODE_32BIT |
d3b01414 JB |
730 | && (current_templates.start->opcode_modifier.jump == JUMP |
731 | || current_templates.start->opcode_modifier.jump | |
0cfa3eb3 | 732 | == JUMP_DWORD)) |
a4d3acd2 JB |
733 | { |
734 | i.far_branch = true; | |
735 | suffix = WORD_MNEM_SUFFIX; | |
736 | } | |
ee86248c JB |
737 | else if (got_a_float == 1) /* "f..." */ |
738 | suffix = SHORT_MNEM_SUFFIX; | |
739 | else | |
740 | suffix = LONG_MNEM_SUFFIX; | |
741 | break; | |
742 | ||
743 | case O_fword_ptr: | |
744 | i.types[this_operand].bitfield.fword = 1; | |
d3b01414 JB |
745 | if (current_templates.start->mnem_off == MN_les |
746 | || current_templates.start->mnem_off == MN_lds | |
747 | || current_templates.start->mnem_off == MN_lss | |
748 | || current_templates.start->mnem_off == MN_lfs | |
749 | || current_templates.start->mnem_off == MN_lgs) | |
ee86248c JB |
750 | suffix = LONG_MNEM_SUFFIX; |
751 | else if (!got_a_float) | |
752 | { | |
753 | if (flag_code == CODE_16BIT) | |
754 | add_prefix (DATA_PREFIX_OPCODE); | |
a4d3acd2 | 755 | i.far_branch = true; |
ee86248c | 756 | } |
ee86248c JB |
757 | break; |
758 | ||
f2f5811f | 759 | case O_qword_ptr: /* O_mmword_ptr */ |
ee86248c | 760 | i.types[this_operand].bitfield.qword = 1; |
d3b01414 | 761 | if (current_templates.start->mnem_off == MN_bound |
ee86248c JB |
762 | || got_a_float == 1) /* "f..." */ |
763 | suffix = LONG_MNEM_SUFFIX; | |
764 | else | |
765 | suffix = QWORD_MNEM_SUFFIX; | |
766 | break; | |
767 | ||
768 | case O_tbyte_ptr: | |
769 | i.types[this_operand].bitfield.tbyte = 1; | |
f210f0a0 JB |
770 | if (got_a_float) |
771 | break; | |
772 | if (flag_code == CODE_64BIT | |
d3b01414 JB |
773 | && (current_templates.start->operand_types[0].bitfield.fword |
774 | || current_templates.start->operand_types[0].bitfield.tbyte | |
775 | || current_templates.start->opcode_modifier.jump == JUMP_DWORD | |
776 | || current_templates.start->opcode_modifier.jump == JUMP)) | |
5990e377 | 777 | suffix = QWORD_MNEM_SUFFIX; /* l[fgs]s, [ls][gi]dt, call, jmp */ |
ee86248c | 778 | else |
a8f4f6b9 | 779 | i.types[this_operand].bitfield.byte = 1; /* cause an error */ |
ee86248c JB |
780 | break; |
781 | ||
7456d03d | 782 | case O_oword_ptr: /* O_xmmword_ptr */ |
ee86248c | 783 | i.types[this_operand].bitfield.xmmword = 1; |
ee86248c JB |
784 | break; |
785 | ||
786 | case O_ymmword_ptr: | |
4fc85f37 JB |
787 | if (vector_size < VSZ256) |
788 | { | |
789 | as_bad (_("256-bit operands disabled")); | |
790 | return 0; | |
791 | } | |
ee86248c | 792 | i.types[this_operand].bitfield.ymmword = 1; |
ee86248c JB |
793 | break; |
794 | ||
43234a1e | 795 | case O_zmmword_ptr: |
4fc85f37 JB |
796 | if (vector_size < VSZ512) |
797 | { | |
798 | as_bad (_("512-bit operands disabled")); | |
799 | return 0; | |
800 | } | |
43234a1e | 801 | i.types[this_operand].bitfield.zmmword = 1; |
43234a1e L |
802 | break; |
803 | ||
ee86248c | 804 | case O_far_ptr: |
a4d3acd2 | 805 | i.far_branch = true; |
ee86248c JB |
806 | /* FALLTHROUGH */ |
807 | case O_near_ptr: | |
d3b01414 JB |
808 | if (current_templates.start->opcode_modifier.jump != JUMP |
809 | && current_templates.start->opcode_modifier.jump != JUMP_DWORD) | |
164d49cb JB |
810 | { |
811 | /* cause an error */ | |
812 | i.types[this_operand].bitfield.byte = 1; | |
813 | i.types[this_operand].bitfield.tbyte = 1; | |
814 | suffix = i.suffix; | |
815 | } | |
ee86248c JB |
816 | break; |
817 | ||
818 | default: | |
819 | BAD_CASE (intel_state.op_modifier); | |
820 | break; | |
821 | } | |
822 | ||
1cb0ab18 JB |
823 | /* Now check whether we actually want to infer an AT&T-like suffix. |
824 | We really only need to do this when operand size determination (incl. | |
825 | REX.W) is going to be derived from it. For this we check whether the | |
826 | given suffix is valid for any of the candidate templates. */ | |
827 | if (suffix && suffix != i.suffix | |
d3b01414 | 828 | && current_templates.start->mnem_off != MN_bound) |
1cb0ab18 JB |
829 | { |
830 | const insn_template *t; | |
831 | ||
d3b01414 | 832 | for (t = current_templates.start; t < current_templates.end; ++t) |
1cb0ab18 JB |
833 | { |
834 | /* Operands haven't been swapped yet. */ | |
835 | unsigned int op = t->operands - 1 - this_operand; | |
836 | ||
837 | /* Easy checks to skip templates which won't match anyway. */ | |
7d3182d6 | 838 | if (this_operand >= t->operands |
35266cb1 | 839 | || t->opcode_modifier.dialect >= ATT_SYNTAX) |
1cb0ab18 JB |
840 | continue; |
841 | ||
842 | switch (suffix) | |
843 | { | |
844 | case BYTE_MNEM_SUFFIX: | |
845 | if (t->opcode_modifier.no_bsuf) | |
846 | continue; | |
847 | break; | |
848 | case WORD_MNEM_SUFFIX: | |
849 | if (t->opcode_modifier.no_wsuf) | |
850 | continue; | |
851 | break; | |
852 | case LONG_MNEM_SUFFIX: | |
853 | if (t->opcode_modifier.no_lsuf) | |
854 | continue; | |
855 | break; | |
856 | case QWORD_MNEM_SUFFIX: | |
9db83a32 | 857 | if (t->opcode_modifier.no_qsuf || !q_suffix_allowed (t)) |
1cb0ab18 JB |
858 | continue; |
859 | break; | |
860 | case SHORT_MNEM_SUFFIX: | |
861 | if (t->opcode_modifier.no_ssuf) | |
862 | continue; | |
863 | break; | |
1cb0ab18 JB |
864 | default: |
865 | abort (); | |
866 | } | |
867 | ||
fcaf78fe JB |
868 | /* We can skip templates with swappable operands here, as one |
869 | operand will be a register, which operand size can be | |
870 | determined from. */ | |
871 | if (t->opcode_modifier.d) | |
872 | continue; | |
873 | ||
1cb0ab18 JB |
874 | /* In a few cases suffixes are permitted, but we can nevertheless |
875 | derive that these aren't going to be needed. This is only of | |
fcaf78fe JB |
876 | interest for insns using ModR/M. */ |
877 | if (!t->opcode_modifier.modrm) | |
1cb0ab18 JB |
878 | break; |
879 | ||
880 | if (!t->operand_types[op].bitfield.baseindex) | |
881 | continue; | |
882 | ||
883 | switch (t->operand_types[op].bitfield.class) | |
884 | { | |
885 | case RegMMX: | |
886 | case RegSIMD: | |
887 | case RegMask: | |
888 | continue; | |
889 | } | |
890 | ||
891 | break; | |
892 | } | |
893 | ||
d3b01414 | 894 | if (t == current_templates.end) |
1cb0ab18 JB |
895 | suffix = 0; |
896 | } | |
897 | ||
ee86248c JB |
898 | if (!i.suffix) |
899 | i.suffix = suffix; | |
1cb0ab18 | 900 | else if (suffix && i.suffix != suffix) |
ee86248c JB |
901 | { |
902 | as_bad (_("conflicting operand size modifiers")); | |
903 | return 0; | |
904 | } | |
905 | } | |
906 | ||
907 | /* Operands for jump/call need special consideration. */ | |
d3b01414 JB |
908 | if (current_templates.start->opcode_modifier.jump == JUMP |
909 | || current_templates.start->opcode_modifier.jump == JUMP_DWORD | |
910 | || current_templates.start->opcode_modifier.jump == JUMP_INTERSEGMENT) | |
ee86248c | 911 | { |
5b7c81bd | 912 | bool jumpabsolute = false; |
6f2f06be | 913 | |
f09c1772 L |
914 | if (i.op[this_operand].regs |
915 | || intel_state.base | |
916 | || intel_state.index | |
ee86248c | 917 | || intel_state.is_mem > 1) |
5b7c81bd | 918 | jumpabsolute = true; |
ee86248c JB |
919 | else |
920 | switch (intel_state.op_modifier) | |
921 | { | |
922 | case O_near_ptr: | |
923 | if (intel_state.seg) | |
5b7c81bd | 924 | jumpabsolute = true; |
ee86248c JB |
925 | else |
926 | intel_state.is_mem = 1; | |
927 | break; | |
928 | case O_far_ptr: | |
929 | case O_absent: | |
930 | if (!intel_state.seg) | |
931 | { | |
932 | intel_state.is_mem = 1; | |
933 | if (intel_state.op_modifier == O_absent) | |
25303607 L |
934 | { |
935 | if (intel_state.is_indirect == 1) | |
5b7c81bd | 936 | jumpabsolute = true; |
25303607 L |
937 | break; |
938 | } | |
ee86248c JB |
939 | as_bad (_("cannot infer the segment part of the operand")); |
940 | return 0; | |
941 | } | |
942 | else if (S_GET_SEGMENT (intel_state.seg) == reg_section) | |
a4d3acd2 JB |
943 | { |
944 | jumpabsolute = true; | |
945 | if (intel_state.op_modifier == O_far_ptr) | |
946 | i.far_branch = true; | |
947 | } | |
ee86248c JB |
948 | else |
949 | { | |
950 | i386_operand_type types; | |
951 | ||
952 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
953 | { | |
954 | as_bad (_("at most %d immediate operands are allowed"), | |
955 | MAX_IMMEDIATE_OPERANDS); | |
956 | return 0; | |
957 | } | |
958 | expP = &im_expressions[i.imm_operands++]; | |
959 | memset (expP, 0, sizeof(*expP)); | |
960 | expP->X_op = O_symbol; | |
961 | expP->X_add_symbol = intel_state.seg; | |
962 | i.op[this_operand].imms = expP; | |
963 | ||
964 | resolve_expression (expP); | |
965 | operand_type_set (&types, ~0); | |
966 | if (!i386_finalize_immediate (S_GET_SEGMENT (intel_state.seg), | |
967 | expP, types, operand_string)) | |
968 | return 0; | |
969 | if (i.operands < MAX_OPERANDS) | |
970 | { | |
971 | this_operand = i.operands++; | |
972 | i.types[this_operand].bitfield.unspecified = 1; | |
973 | } | |
ee86248c JB |
974 | intel_state.seg = NULL; |
975 | intel_state.is_mem = 0; | |
976 | } | |
977 | break; | |
978 | default: | |
5b7c81bd | 979 | jumpabsolute = true; |
ee86248c JB |
980 | break; |
981 | } | |
6f2f06be JB |
982 | if (jumpabsolute) |
983 | { | |
5b7c81bd | 984 | i.jumpabsolute = true; |
6f2f06be JB |
985 | intel_state.is_mem |= 1; |
986 | } | |
ee86248c JB |
987 | } |
988 | else if (intel_state.seg) | |
989 | intel_state.is_mem |= 1; | |
990 | ||
991 | if (i.op[this_operand].regs) | |
992 | { | |
993 | i386_operand_type temp; | |
994 | ||
995 | /* Register operand. */ | |
c032bc4f JB |
996 | if (intel_state.base || intel_state.index || intel_state.seg |
997 | || i.imm_bits[this_operand]) | |
ee86248c JB |
998 | { |
999 | as_bad (_("invalid operand")); | |
1000 | return 0; | |
1001 | } | |
1002 | ||
1003 | temp = i.op[this_operand].regs->reg_type; | |
1004 | temp.bitfield.baseindex = 0; | |
f09c1772 L |
1005 | i.types[this_operand] = operand_type_or (i.types[this_operand], |
1006 | temp); | |
ee86248c JB |
1007 | i.types[this_operand].bitfield.unspecified = 0; |
1008 | ++i.reg_operands; | |
cf665fee | 1009 | |
7063667e JB |
1010 | if ((i.rounding.type != rc_none && !i.rounding.modifier |
1011 | && temp.bitfield.class != Reg) | |
1012 | || rc_sae_modifier) | |
cf665fee JB |
1013 | { |
1014 | unsigned int j; | |
1015 | ||
1016 | for (j = 0; j < ARRAY_SIZE (RC_NamesTable); ++j) | |
1017 | if (i.rounding.type == RC_NamesTable[j].type) | |
1018 | break; | |
1019 | as_bad (_("`%s': misplaced `{%s}'"), | |
d3b01414 | 1020 | insn_name (current_templates.start), RC_NamesTable[j].name); |
cf665fee JB |
1021 | return 0; |
1022 | } | |
ee86248c | 1023 | } |
f09c1772 L |
1024 | else if (intel_state.base |
1025 | || intel_state.index | |
1026 | || intel_state.seg | |
ee86248c JB |
1027 | || intel_state.is_mem) |
1028 | { | |
1029 | /* Memory operand. */ | |
c032bc4f JB |
1030 | if (i.imm_bits[this_operand]) |
1031 | { | |
1032 | as_bad (_("invalid operand")); | |
1033 | return 0; | |
1034 | } | |
1035 | ||
04784e33 | 1036 | if (i.mem_operands) |
ee86248c | 1037 | { |
313c53d1 L |
1038 | /* Handle |
1039 | ||
1040 | call 0x9090,0x90909090 | |
1041 | lcall 0x9090,0x90909090 | |
1042 | jmp 0x9090,0x90909090 | |
1043 | ljmp 0x9090,0x90909090 | |
1044 | */ | |
1045 | ||
d3b01414 JB |
1046 | if ((current_templates.start->opcode_modifier.jump == JUMP_INTERSEGMENT |
1047 | || current_templates.start->opcode_modifier.jump == JUMP_DWORD | |
1048 | || current_templates.start->opcode_modifier.jump == JUMP) | |
313c53d1 L |
1049 | && this_operand == 1 |
1050 | && intel_state.seg == NULL | |
1051 | && i.mem_operands == 1 | |
1052 | && i.disp_operands == 1 | |
1053 | && intel_state.op_modifier == O_absent) | |
1054 | { | |
1055 | /* Try to process the first operand as immediate, */ | |
1056 | this_operand = 0; | |
1057 | if (i386_finalize_immediate (exp_seg, i.op[0].imms, | |
1058 | intel_state.reloc_types, | |
1059 | NULL)) | |
1060 | { | |
1061 | this_operand = 1; | |
1062 | expP = &im_expressions[0]; | |
1063 | i.op[this_operand].imms = expP; | |
1064 | *expP = exp; | |
1065 | ||
1066 | /* Try to process the second operand as immediate, */ | |
1067 | if (i386_finalize_immediate (exp_seg, expP, | |
1068 | intel_state.reloc_types, | |
1069 | NULL)) | |
1070 | { | |
1071 | i.mem_operands = 0; | |
1072 | i.disp_operands = 0; | |
1073 | i.imm_operands = 2; | |
c48dadc9 | 1074 | i.flags[0] &= ~Operand_Mem; |
313c53d1 L |
1075 | i.types[0].bitfield.disp16 = 0; |
1076 | i.types[0].bitfield.disp32 = 0; | |
313c53d1 L |
1077 | return 1; |
1078 | } | |
1079 | } | |
1080 | } | |
ee86248c JB |
1081 | } |
1082 | ||
2abc2bec JB |
1083 | /* Swap base and index in 16-bit memory operands like |
1084 | [si+bx]. Since i386_index_check is also used in AT&T | |
1085 | mode we have to do this here. */ | |
1086 | if (intel_state.base | |
1087 | && intel_state.index | |
dc821c5f JB |
1088 | && intel_state.base->reg_type.bitfield.word |
1089 | && intel_state.index->reg_type.bitfield.word | |
2abc2bec JB |
1090 | && intel_state.base->reg_num >= 6 |
1091 | && intel_state.index->reg_num < 6) | |
1092 | { | |
1093 | i.base_reg = intel_state.index; | |
1094 | i.index_reg = intel_state.base; | |
1095 | } | |
1096 | else | |
1097 | { | |
1098 | i.base_reg = intel_state.base; | |
1099 | i.index_reg = intel_state.index; | |
1100 | } | |
1101 | ||
1102 | if (i.base_reg || i.index_reg) | |
1103 | i.types[this_operand].bitfield.baseindex = 1; | |
1104 | ||
ee86248c JB |
1105 | expP = &disp_expressions[i.disp_operands]; |
1106 | memcpy (expP, &exp, sizeof(exp)); | |
1107 | resolve_expression (expP); | |
1108 | ||
f09c1772 L |
1109 | if (expP->X_op != O_constant |
1110 | || expP->X_add_number | |
2abc2bec | 1111 | || !i.types[this_operand].bitfield.baseindex) |
ee86248c JB |
1112 | { |
1113 | i.op[this_operand].disps = expP; | |
1114 | i.disp_operands++; | |
1115 | ||
2abc2bec JB |
1116 | i386_addressing_mode (); |
1117 | ||
ee86248c JB |
1118 | if (flag_code == CODE_64BIT) |
1119 | { | |
a775efc8 | 1120 | i.types[this_operand].bitfield.disp32 = 1; |
ee86248c | 1121 | if (!i.prefix[ADDR_PREFIX]) |
a775efc8 | 1122 | i.types[this_operand].bitfield.disp64 = 1; |
ee86248c JB |
1123 | } |
1124 | else if (!i.prefix[ADDR_PREFIX] ^ (flag_code == CODE_16BIT)) | |
1125 | i.types[this_operand].bitfield.disp32 = 1; | |
1126 | else | |
1127 | i.types[this_operand].bitfield.disp16 = 1; | |
1128 | ||
1129 | #if defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) | |
1130 | /* | |
1131 | * exp_seg is used only for verification in | |
1132 | * i386_finalize_displacement, and we can end up seeing reg_section | |
1133 | * here - but we know we removed all registers from the expression | |
1134 | * (or error-ed on any remaining ones) in i386_intel_simplify. I | |
1135 | * consider the check in i386_finalize_displacement bogus anyway, in | |
1136 | * particular because it doesn't allow for expr_section, so I'd | |
1137 | * rather see that check (and the similar one in | |
1138 | * i386_finalize_immediate) use SEG_NORMAL(), but not being an a.out | |
1139 | * expert I can't really say whether that would have other bad side | |
1140 | * effects. | |
1141 | */ | |
1142 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour | |
1143 | && exp_seg == reg_section) | |
1144 | exp_seg = expP->X_op != O_constant ? undefined_section | |
1145 | : absolute_section; | |
1146 | #endif | |
1147 | ||
1148 | if (!i386_finalize_displacement (exp_seg, expP, | |
1149 | intel_state.reloc_types, | |
1150 | operand_string)) | |
1151 | return 0; | |
1152 | } | |
1153 | ||
ee86248c JB |
1154 | if (intel_state.seg) |
1155 | { | |
fd4e0347 | 1156 | for (ret = check_none; ; ret = operand_check) |
e21440ba JB |
1157 | { |
1158 | expP = symbol_get_value_expression (intel_state.seg); | |
fd4e0347 JB |
1159 | if (expP->X_op != O_full_ptr |
1160 | || symbol_get_value_expression (expP->X_op_symbol)->X_op | |
1161 | != O_register) | |
e21440ba JB |
1162 | break; |
1163 | intel_state.seg = expP->X_add_symbol; | |
1164 | } | |
0398aac5 | 1165 | if (expP->X_op != O_register) |
ee86248c JB |
1166 | { |
1167 | as_bad (_("segment register name expected")); | |
1168 | return 0; | |
1169 | } | |
00cee14f | 1170 | if (i386_regtab[expP->X_add_number].reg_type.bitfield.class != SReg) |
ee86248c JB |
1171 | { |
1172 | as_bad (_("invalid use of register")); | |
1173 | return 0; | |
1174 | } | |
fd4e0347 JB |
1175 | switch (ret) |
1176 | { | |
1177 | case check_error: | |
1178 | as_bad (_("redundant segment overrides")); | |
1179 | return 0; | |
1180 | case check_warning: | |
1181 | as_warn (_("redundant segment overrides")); | |
1182 | break; | |
1183 | } | |
5e042380 JB |
1184 | if (i386_regtab[expP->X_add_number].reg_num == RegFlat) |
1185 | i.seg[i.mem_operands] = NULL; | |
1186 | else | |
1187 | i.seg[i.mem_operands] = &i386_regtab[expP->X_add_number]; | |
ee86248c JB |
1188 | } |
1189 | ||
ee86248c JB |
1190 | if (!i386_index_check (operand_string)) |
1191 | return 0; | |
1192 | ||
c48dadc9 | 1193 | i.flags[this_operand] |= Operand_Mem; |
ee86248c JB |
1194 | ++i.mem_operands; |
1195 | } | |
1196 | else | |
1197 | { | |
1198 | /* Immediate. */ | |
1199 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
1200 | { | |
1201 | as_bad (_("at most %d immediate operands are allowed"), | |
1202 | MAX_IMMEDIATE_OPERANDS); | |
1203 | return 0; | |
1204 | } | |
1205 | ||
1206 | expP = &im_expressions[i.imm_operands++]; | |
1207 | i.op[this_operand].imms = expP; | |
1208 | *expP = exp; | |
1209 | ||
1210 | return i386_finalize_immediate (exp_seg, expP, intel_state.reloc_types, | |
1211 | operand_string); | |
1212 | } | |
1213 | ||
1214 | return 1; | |
1215 | } |