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ee86248c | 1 | /* tc-i386.c -- Assemble Intel syntax code for ix86/x86-64 |
a2c58332 | 2 | Copyright (C) 2009-2022 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 | ||
172 | for (j = 0; i386_operators[j].name; ++j) | |
91d6fa6a | 173 | if (strcasecmp (i386_operators[j].name, name) == 0) |
ee86248c JB |
174 | { |
175 | if (i386_operators[j].operands | |
176 | && i386_operators[j].operands != operands) | |
177 | return O_illegal; | |
1e9cc1c2 | 178 | return i386_operators[j].op; |
ee86248c JB |
179 | } |
180 | ||
181 | for (j = 0; i386_types[j].name; ++j) | |
91d6fa6a | 182 | if (strcasecmp (i386_types[j].name, name) == 0) |
ee86248c | 183 | break; |
d02603dc | 184 | |
ee86248c JB |
185 | if (i386_types[j].name && *pc == ' ') |
186 | { | |
d02603dc NC |
187 | char *pname; |
188 | char c; | |
189 | ||
190 | ++input_line_pointer; | |
191 | c = get_symbol_name (&pname); | |
ee86248c | 192 | |
91d6fa6a | 193 | if (strcasecmp (pname, "ptr") == 0) |
ee86248c | 194 | { |
d02603dc | 195 | /* FIXME: What if c == '"' ? */ |
91d6fa6a | 196 | pname[-1] = *pc; |
ee86248c JB |
197 | *pc = c; |
198 | if (intel_syntax > 0 || operands != 1) | |
199 | return O_illegal; | |
1e9cc1c2 | 200 | return i386_types[j].op; |
ee86248c JB |
201 | } |
202 | ||
d02603dc | 203 | (void) restore_line_pointer (c); |
91d6fa6a | 204 | input_line_pointer = pname - 1; |
ee86248c JB |
205 | } |
206 | ||
207 | return O_absent; | |
208 | } | |
209 | ||
210 | static int i386_intel_parse_name (const char *name, expressionS *e) | |
211 | { | |
91d6fa6a | 212 | unsigned int j; |
ee86248c | 213 | |
b7adb16d JB |
214 | if (! strcmp (name, "$")) |
215 | { | |
216 | current_location (e); | |
217 | return 1; | |
218 | } | |
219 | ||
91d6fa6a NC |
220 | for (j = 0; i386_types[j].name; ++j) |
221 | if (strcasecmp(i386_types[j].name, name) == 0) | |
ee86248c JB |
222 | { |
223 | e->X_op = O_constant; | |
91d6fa6a | 224 | e->X_add_number = i386_types[j].sz[flag_code]; |
ee86248c JB |
225 | e->X_add_symbol = NULL; |
226 | e->X_op_symbol = NULL; | |
227 | return 1; | |
228 | } | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
91d6fa6a | 233 | static INLINE int i386_intel_check (const reg_entry *rreg, |
ee86248c | 234 | const reg_entry *base, |
91d6fa6a | 235 | const reg_entry *iindex) |
ee86248c | 236 | { |
f09c1772 L |
237 | if ((this_operand >= 0 |
238 | && rreg != i.op[this_operand].regs) | |
239 | || base != intel_state.base | |
240 | || iindex != intel_state.index) | |
ee86248c JB |
241 | { |
242 | as_bad (_("invalid use of register")); | |
243 | return 0; | |
244 | } | |
245 | return 1; | |
246 | } | |
247 | ||
248 | static INLINE void i386_intel_fold (expressionS *e, symbolS *sym) | |
249 | { | |
27dee630 | 250 | expressionS *exp = symbol_get_value_expression (sym); |
ee86248c JB |
251 | if (S_GET_SEGMENT (sym) == absolute_section) |
252 | { | |
253 | offsetT val = e->X_add_number; | |
254 | ||
27dee630 | 255 | *e = *exp; |
ee86248c JB |
256 | e->X_add_number += val; |
257 | } | |
258 | else | |
259 | { | |
27dee630 L |
260 | if (exp->X_op == O_symbol |
261 | && strcmp (S_GET_NAME (exp->X_add_symbol), | |
262 | GLOBAL_OFFSET_TABLE_NAME) == 0) | |
263 | sym = exp->X_add_symbol; | |
ee86248c JB |
264 | e->X_add_symbol = sym; |
265 | e->X_op_symbol = NULL; | |
266 | e->X_op = O_symbol; | |
267 | } | |
268 | } | |
269 | ||
3c7b9c2c L |
270 | static int |
271 | i386_intel_simplify_register (expressionS *e) | |
272 | { | |
273 | int reg_num; | |
274 | ||
275 | if (this_operand < 0 || intel_state.in_offset) | |
276 | { | |
277 | as_bad (_("invalid use of register")); | |
278 | return 0; | |
279 | } | |
280 | ||
281 | if (e->X_op == O_register) | |
282 | reg_num = e->X_add_number; | |
283 | else | |
284 | reg_num = e->X_md - 1; | |
285 | ||
35015cd1 NC |
286 | if (reg_num < 0 || reg_num >= (int) i386_regtab_size) |
287 | { | |
288 | as_bad (_("invalid register number")); | |
289 | return 0; | |
290 | } | |
291 | ||
3c7b9c2c L |
292 | if (!intel_state.in_bracket) |
293 | { | |
294 | if (i.op[this_operand].regs) | |
295 | { | |
296 | as_bad (_("invalid use of register")); | |
297 | return 0; | |
298 | } | |
00cee14f | 299 | if (i386_regtab[reg_num].reg_type.bitfield.class == SReg |
3c7b9c2c L |
300 | && i386_regtab[reg_num].reg_num == RegFlat) |
301 | { | |
302 | as_bad (_("invalid use of pseudo-register")); | |
303 | return 0; | |
304 | } | |
305 | i.op[this_operand].regs = i386_regtab + reg_num; | |
306 | } | |
9e2934f7 | 307 | else if (!intel_state.index |
1b54b8d7 JB |
308 | && (i386_regtab[reg_num].reg_type.bitfield.xmmword |
309 | || i386_regtab[reg_num].reg_type.bitfield.ymmword | |
310 | || i386_regtab[reg_num].reg_type.bitfield.zmmword | |
e968fc9b | 311 | || i386_regtab[reg_num].reg_num == RegIZ)) |
9e2934f7 | 312 | intel_state.index = i386_regtab + reg_num; |
3c7b9c2c L |
313 | else if (!intel_state.base && !intel_state.in_scale) |
314 | intel_state.base = i386_regtab + reg_num; | |
315 | else if (!intel_state.index) | |
9e2934f7 | 316 | { |
a152332d JB |
317 | const insn_template *t = current_templates->start; |
318 | ||
9e2934f7 | 319 | if (intel_state.in_scale |
a152332d | 320 | || (t->opcode_modifier.opcodeprefix == PREFIX_0XF3 |
389d00a5 JB |
321 | && t->opcode_modifier.opcodespace == SPACE_0F |
322 | && t->base_opcode == 0x1b /* bndmk */) | |
a152332d | 323 | || (t->opcode_modifier.opcodeprefix == PREFIX_NONE |
389d00a5 JB |
324 | && t->opcode_modifier.opcodespace == SPACE_0F |
325 | && (t->base_opcode & ~1) == 0x1a /* bnd{ld,st}x */) | |
9e2934f7 JB |
326 | || i386_regtab[reg_num].reg_type.bitfield.baseindex) |
327 | intel_state.index = i386_regtab + reg_num; | |
328 | else | |
329 | { | |
330 | /* Convert base to index and make ESP/RSP the base. */ | |
331 | intel_state.index = intel_state.base; | |
332 | intel_state.base = i386_regtab + reg_num; | |
333 | } | |
334 | } | |
3c7b9c2c L |
335 | else |
336 | { | |
337 | /* esp is invalid as index */ | |
34684862 | 338 | intel_state.index = reg_eax + ESP_REG_NUM; |
3c7b9c2c L |
339 | } |
340 | return 2; | |
341 | } | |
342 | ||
ee86248c JB |
343 | static int i386_intel_simplify (expressionS *); |
344 | ||
345 | static INLINE int i386_intel_simplify_symbol(symbolS *sym) | |
346 | { | |
347 | int ret = i386_intel_simplify (symbol_get_value_expression (sym)); | |
348 | ||
349 | if (ret == 2) | |
350 | { | |
351 | S_SET_SEGMENT(sym, absolute_section); | |
352 | ret = 1; | |
353 | } | |
354 | return ret; | |
355 | } | |
356 | ||
357 | static int i386_intel_simplify (expressionS *e) | |
358 | { | |
f09c1772 L |
359 | const reg_entry *the_reg = (this_operand >= 0 |
360 | ? i.op[this_operand].regs : NULL); | |
ee86248c | 361 | const reg_entry *base = intel_state.base; |
91d6fa6a | 362 | const reg_entry *state_index = intel_state.index; |
ee86248c JB |
363 | int ret; |
364 | ||
365 | if (!intel_syntax) | |
366 | return 1; | |
367 | ||
368 | switch (e->X_op) | |
369 | { | |
370 | case O_index: | |
371 | if (e->X_add_symbol) | |
372 | { | |
373 | if (!i386_intel_simplify_symbol (e->X_add_symbol) | |
f09c1772 L |
374 | || !i386_intel_check(the_reg, intel_state.base, |
375 | intel_state.index)) | |
5bb3703f | 376 | return 0; |
ee86248c JB |
377 | } |
378 | if (!intel_state.in_offset) | |
379 | ++intel_state.in_bracket; | |
380 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
381 | if (!intel_state.in_offset) | |
382 | --intel_state.in_bracket; | |
383 | if (!ret) | |
384 | return 0; | |
385 | if (e->X_add_symbol) | |
386 | e->X_op = O_add; | |
387 | else | |
388 | i386_intel_fold (e, e->X_op_symbol); | |
389 | break; | |
390 | ||
391 | case O_offset: | |
6cee4cda | 392 | intel_state.has_offset = 1; |
ee86248c JB |
393 | ++intel_state.in_offset; |
394 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
395 | --intel_state.in_offset; | |
91d6fa6a | 396 | if (!ret || !i386_intel_check(the_reg, base, state_index)) |
ee86248c JB |
397 | return 0; |
398 | i386_intel_fold (e, e->X_add_symbol); | |
399 | return ret; | |
400 | ||
401 | case O_byte_ptr: | |
402 | case O_word_ptr: | |
403 | case O_dword_ptr: | |
404 | case O_fword_ptr: | |
f2f5811f | 405 | case O_qword_ptr: /* O_mmword_ptr */ |
ee86248c | 406 | case O_tbyte_ptr: |
7456d03d | 407 | case O_oword_ptr: /* O_xmmword_ptr */ |
ee86248c | 408 | case O_ymmword_ptr: |
43234a1e | 409 | case O_zmmword_ptr: |
ee86248c JB |
410 | case O_near_ptr: |
411 | case O_far_ptr: | |
412 | if (intel_state.op_modifier == O_absent) | |
413 | intel_state.op_modifier = e->X_op; | |
414 | /* FALLTHROUGH */ | |
415 | case O_short: | |
f09c1772 L |
416 | if (symbol_get_value_expression (e->X_add_symbol)->X_op |
417 | == O_register) | |
ee86248c JB |
418 | { |
419 | as_bad (_("invalid use of register")); | |
420 | return 0; | |
421 | } | |
422 | if (!i386_intel_simplify_symbol (e->X_add_symbol)) | |
423 | return 0; | |
424 | i386_intel_fold (e, e->X_add_symbol); | |
425 | break; | |
426 | ||
427 | case O_full_ptr: | |
f09c1772 L |
428 | if (symbol_get_value_expression (e->X_op_symbol)->X_op |
429 | == O_register) | |
ee86248c JB |
430 | { |
431 | as_bad (_("invalid use of register")); | |
432 | return 0; | |
433 | } | |
434 | if (!i386_intel_simplify_symbol (e->X_op_symbol) | |
f09c1772 L |
435 | || !i386_intel_check(the_reg, intel_state.base, |
436 | intel_state.index)) | |
ee86248c JB |
437 | return 0; |
438 | if (!intel_state.in_offset) | |
fd4e0347 JB |
439 | { |
440 | if (!intel_state.seg) | |
441 | intel_state.seg = e->X_add_symbol; | |
442 | else | |
443 | { | |
444 | expressionS exp; | |
445 | ||
446 | exp.X_op = O_full_ptr; | |
447 | exp.X_add_symbol = e->X_add_symbol; | |
448 | exp.X_op_symbol = intel_state.seg; | |
449 | intel_state.seg = make_expr_symbol (&exp); | |
450 | } | |
451 | } | |
ee86248c JB |
452 | i386_intel_fold (e, e->X_op_symbol); |
453 | break; | |
454 | ||
ee86248c JB |
455 | case O_multiply: |
456 | if (this_operand >= 0 && intel_state.in_bracket) | |
457 | { | |
458 | expressionS *scale = NULL; | |
c2a5914e | 459 | int has_index = (intel_state.index != NULL); |
ee86248c JB |
460 | |
461 | if (!intel_state.in_scale++) | |
462 | intel_state.scale_factor = 1; | |
463 | ||
464 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
c2a5914e | 465 | if (ret && !has_index && intel_state.index) |
ee86248c JB |
466 | scale = symbol_get_value_expression (e->X_op_symbol); |
467 | ||
468 | if (ret) | |
469 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
c2a5914e | 470 | if (ret && !scale && !has_index && intel_state.index) |
ee86248c JB |
471 | scale = symbol_get_value_expression (e->X_add_symbol); |
472 | ||
c2a5914e | 473 | if (ret && scale) |
ee86248c JB |
474 | { |
475 | resolve_expression (scale); | |
476 | if (scale->X_op != O_constant | |
dc821c5f | 477 | || intel_state.index->reg_type.bitfield.word) |
ee86248c JB |
478 | scale->X_add_number = 0; |
479 | intel_state.scale_factor *= scale->X_add_number; | |
480 | } | |
481 | ||
482 | --intel_state.in_scale; | |
483 | if (!ret) | |
484 | return 0; | |
485 | ||
486 | if (!intel_state.in_scale) | |
487 | switch (intel_state.scale_factor) | |
488 | { | |
489 | case 1: | |
490 | i.log2_scale_factor = 0; | |
491 | break; | |
492 | case 2: | |
493 | i.log2_scale_factor = 1; | |
494 | break; | |
495 | case 4: | |
496 | i.log2_scale_factor = 2; | |
497 | break; | |
498 | case 8: | |
499 | i.log2_scale_factor = 3; | |
500 | break; | |
501 | default: | |
502 | /* esp is invalid as index */ | |
34684862 | 503 | intel_state.index = reg_eax + ESP_REG_NUM; |
ee86248c JB |
504 | break; |
505 | } | |
506 | ||
507 | break; | |
508 | } | |
92b4f90c | 509 | goto fallthrough; |
3c7b9c2c L |
510 | |
511 | case O_register: | |
512 | ret = i386_intel_simplify_register (e); | |
513 | if (ret == 2) | |
514 | { | |
515 | gas_assert (e->X_add_number < (unsigned short) -1); | |
516 | e->X_md = (unsigned short) e->X_add_number + 1; | |
517 | e->X_op = O_constant; | |
518 | e->X_add_number = 0; | |
519 | } | |
520 | return ret; | |
521 | ||
522 | case O_constant: | |
523 | if (e->X_md) | |
524 | return i386_intel_simplify_register (e); | |
525 | ||
ee86248c JB |
526 | /* FALLTHROUGH */ |
527 | default: | |
dc1e8a47 | 528 | fallthrough: |
f09c1772 L |
529 | if (e->X_add_symbol |
530 | && !i386_intel_simplify_symbol (e->X_add_symbol)) | |
ee86248c JB |
531 | return 0; |
532 | if (e->X_op == O_add || e->X_op == O_subtract) | |
533 | { | |
534 | base = intel_state.base; | |
91d6fa6a | 535 | state_index = intel_state.index; |
ee86248c | 536 | } |
91d6fa6a | 537 | if (!i386_intel_check (the_reg, base, state_index) |
f09c1772 L |
538 | || (e->X_op_symbol |
539 | && !i386_intel_simplify_symbol (e->X_op_symbol)) | |
91d6fa6a | 540 | || !i386_intel_check (the_reg, |
f09c1772 L |
541 | (e->X_op != O_add |
542 | ? base : intel_state.base), | |
543 | (e->X_op != O_add | |
544 | ? state_index : intel_state.index))) | |
ee86248c JB |
545 | return 0; |
546 | break; | |
547 | } | |
548 | ||
f09c1772 L |
549 | if (this_operand >= 0 |
550 | && e->X_op == O_symbol | |
551 | && !intel_state.in_offset) | |
ee86248c JB |
552 | { |
553 | segT seg = S_GET_SEGMENT (e->X_add_symbol); | |
554 | ||
555 | if (seg != absolute_section | |
556 | && seg != reg_section | |
557 | && seg != expr_section) | |
558 | intel_state.is_mem |= 2 - !intel_state.in_bracket; | |
559 | } | |
560 | ||
561 | return 1; | |
562 | } | |
563 | ||
564 | int i386_need_index_operator (void) | |
565 | { | |
566 | return intel_syntax < 0; | |
567 | } | |
568 | ||
569 | static int | |
570 | i386_intel_operand (char *operand_string, int got_a_float) | |
571 | { | |
572 | char *saved_input_line_pointer, *buf; | |
573 | segT exp_seg; | |
574 | expressionS exp, *expP; | |
575 | char suffix = 0; | |
576 | int ret; | |
577 | ||
43234a1e L |
578 | /* Handle vector immediates. */ |
579 | if (RC_SAE_immediate (operand_string)) | |
580 | return 1; | |
581 | ||
ee86248c JB |
582 | /* Initialize state structure. */ |
583 | intel_state.op_modifier = O_absent; | |
584 | intel_state.is_mem = 0; | |
25303607 | 585 | intel_state.is_indirect = 0; |
1acf546e | 586 | intel_state.has_offset = 0; |
ee86248c JB |
587 | intel_state.base = NULL; |
588 | intel_state.index = NULL; | |
589 | intel_state.seg = NULL; | |
590 | operand_type_set (&intel_state.reloc_types, ~0); | |
9c2799c2 NC |
591 | gas_assert (!intel_state.in_offset); |
592 | gas_assert (!intel_state.in_bracket); | |
593 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
594 | |
595 | saved_input_line_pointer = input_line_pointer; | |
596 | input_line_pointer = buf = xstrdup (operand_string); | |
597 | ||
598 | intel_syntax = -1; | |
599 | memset (&exp, 0, sizeof(exp)); | |
600 | exp_seg = expression (&exp); | |
601 | ret = i386_intel_simplify (&exp); | |
602 | intel_syntax = 1; | |
603 | ||
604 | SKIP_WHITESPACE (); | |
43234a1e L |
605 | |
606 | /* Handle vector operations. */ | |
607 | if (*input_line_pointer == '{') | |
608 | { | |
f70c6814 | 609 | char *end = check_VecOperations (input_line_pointer); |
43234a1e L |
610 | if (end) |
611 | input_line_pointer = end; | |
612 | else | |
613 | ret = 0; | |
614 | } | |
615 | ||
ee86248c JB |
616 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
617 | { | |
38bf5113 JB |
618 | if (ret) |
619 | as_bad (_("junk `%s' after expression"), input_line_pointer); | |
ee86248c JB |
620 | ret = 0; |
621 | } | |
622 | else if (exp.X_op == O_illegal || exp.X_op == O_absent) | |
623 | { | |
38bf5113 JB |
624 | if (ret) |
625 | as_bad (_("invalid expression")); | |
ee86248c JB |
626 | ret = 0; |
627 | } | |
6cee4cda L |
628 | else if (!intel_state.has_offset |
629 | && input_line_pointer > buf | |
630 | && *(input_line_pointer - 1) == ']') | |
25303607 L |
631 | { |
632 | intel_state.is_mem |= 1; | |
633 | intel_state.is_indirect = 1; | |
634 | } | |
ee86248c JB |
635 | |
636 | input_line_pointer = saved_input_line_pointer; | |
637 | free (buf); | |
638 | ||
9c2799c2 NC |
639 | gas_assert (!intel_state.in_offset); |
640 | gas_assert (!intel_state.in_bracket); | |
641 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
642 | |
643 | if (!ret) | |
644 | return 0; | |
645 | ||
646 | if (intel_state.op_modifier != O_absent | |
35648716 JB |
647 | && (current_templates->start->opcode_modifier.opcodespace != SPACE_BASE |
648 | || current_templates->start->base_opcode != 0x8d /* lea */)) | |
ee86248c JB |
649 | { |
650 | i.types[this_operand].bitfield.unspecified = 0; | |
651 | ||
652 | switch (intel_state.op_modifier) | |
653 | { | |
654 | case O_byte_ptr: | |
655 | i.types[this_operand].bitfield.byte = 1; | |
656 | suffix = BYTE_MNEM_SUFFIX; | |
657 | break; | |
658 | ||
659 | case O_word_ptr: | |
660 | i.types[this_operand].bitfield.word = 1; | |
37404387 | 661 | if (got_a_float == 2) /* "fi..." */ |
ee86248c JB |
662 | suffix = SHORT_MNEM_SUFFIX; |
663 | else | |
664 | suffix = WORD_MNEM_SUFFIX; | |
665 | break; | |
666 | ||
667 | case O_dword_ptr: | |
668 | i.types[this_operand].bitfield.dword = 1; | |
669 | if ((current_templates->start->name[0] == 'l' | |
670 | && current_templates->start->name[2] == 's' | |
671 | && current_templates->start->name[3] == 0) | |
35648716 JB |
672 | || (current_templates->start->opcode_modifier.opcodespace == SPACE_BASE |
673 | && current_templates->start->base_opcode == 0x62 /* bound */)) | |
ee86248c | 674 | suffix = WORD_MNEM_SUFFIX; |
d488367a | 675 | else if (flag_code != CODE_32BIT |
0cfa3eb3 JB |
676 | && (current_templates->start->opcode_modifier.jump == JUMP |
677 | || current_templates->start->opcode_modifier.jump | |
678 | == JUMP_DWORD)) | |
d488367a JB |
679 | suffix = flag_code == CODE_16BIT ? LONG_DOUBLE_MNEM_SUFFIX |
680 | : WORD_MNEM_SUFFIX; | |
ee86248c JB |
681 | else if (got_a_float == 1) /* "f..." */ |
682 | suffix = SHORT_MNEM_SUFFIX; | |
683 | else | |
684 | suffix = LONG_MNEM_SUFFIX; | |
685 | break; | |
686 | ||
687 | case O_fword_ptr: | |
688 | i.types[this_operand].bitfield.fword = 1; | |
689 | if (current_templates->start->name[0] == 'l' | |
690 | && current_templates->start->name[2] == 's' | |
691 | && current_templates->start->name[3] == 0) | |
692 | suffix = LONG_MNEM_SUFFIX; | |
693 | else if (!got_a_float) | |
694 | { | |
695 | if (flag_code == CODE_16BIT) | |
696 | add_prefix (DATA_PREFIX_OPCODE); | |
697 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
698 | } | |
ee86248c JB |
699 | break; |
700 | ||
f2f5811f | 701 | case O_qword_ptr: /* O_mmword_ptr */ |
ee86248c | 702 | i.types[this_operand].bitfield.qword = 1; |
35648716 JB |
703 | if ((current_templates->start->opcode_modifier.opcodespace == SPACE_BASE |
704 | && current_templates->start->base_opcode == 0x62 /* bound */) | |
ee86248c JB |
705 | || got_a_float == 1) /* "f..." */ |
706 | suffix = LONG_MNEM_SUFFIX; | |
707 | else | |
708 | suffix = QWORD_MNEM_SUFFIX; | |
709 | break; | |
710 | ||
711 | case O_tbyte_ptr: | |
712 | i.types[this_operand].bitfield.tbyte = 1; | |
713 | if (got_a_float == 1) | |
714 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
a8f4f6b9 | 715 | else if ((current_templates->start->operand_types[0].bitfield.fword |
5990e377 JB |
716 | || current_templates->start->operand_types[0].bitfield.tbyte |
717 | || current_templates->start->opcode_modifier.jump == JUMP_DWORD | |
718 | || current_templates->start->opcode_modifier.jump == JUMP) | |
a8f4f6b9 | 719 | && flag_code == CODE_64BIT) |
5990e377 | 720 | suffix = QWORD_MNEM_SUFFIX; /* l[fgs]s, [ls][gi]dt, call, jmp */ |
ee86248c | 721 | else |
a8f4f6b9 | 722 | i.types[this_operand].bitfield.byte = 1; /* cause an error */ |
ee86248c JB |
723 | break; |
724 | ||
7456d03d | 725 | case O_oword_ptr: /* O_xmmword_ptr */ |
ee86248c | 726 | i.types[this_operand].bitfield.xmmword = 1; |
ee86248c JB |
727 | break; |
728 | ||
729 | case O_ymmword_ptr: | |
730 | i.types[this_operand].bitfield.ymmword = 1; | |
ee86248c JB |
731 | break; |
732 | ||
43234a1e L |
733 | case O_zmmword_ptr: |
734 | i.types[this_operand].bitfield.zmmword = 1; | |
43234a1e L |
735 | break; |
736 | ||
ee86248c JB |
737 | case O_far_ptr: |
738 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
739 | /* FALLTHROUGH */ | |
740 | case O_near_ptr: | |
0cfa3eb3 JB |
741 | if (current_templates->start->opcode_modifier.jump != JUMP |
742 | && current_templates->start->opcode_modifier.jump != JUMP_DWORD) | |
164d49cb JB |
743 | { |
744 | /* cause an error */ | |
745 | i.types[this_operand].bitfield.byte = 1; | |
746 | i.types[this_operand].bitfield.tbyte = 1; | |
747 | suffix = i.suffix; | |
748 | } | |
ee86248c JB |
749 | break; |
750 | ||
751 | default: | |
752 | BAD_CASE (intel_state.op_modifier); | |
753 | break; | |
754 | } | |
755 | ||
756 | if (!i.suffix) | |
757 | i.suffix = suffix; | |
758 | else if (i.suffix != suffix) | |
759 | { | |
760 | as_bad (_("conflicting operand size modifiers")); | |
761 | return 0; | |
762 | } | |
763 | } | |
764 | ||
765 | /* Operands for jump/call need special consideration. */ | |
0cfa3eb3 JB |
766 | if (current_templates->start->opcode_modifier.jump == JUMP |
767 | || current_templates->start->opcode_modifier.jump == JUMP_DWORD | |
768 | || current_templates->start->opcode_modifier.jump == JUMP_INTERSEGMENT) | |
ee86248c | 769 | { |
5b7c81bd | 770 | bool jumpabsolute = false; |
6f2f06be | 771 | |
f09c1772 L |
772 | if (i.op[this_operand].regs |
773 | || intel_state.base | |
774 | || intel_state.index | |
ee86248c | 775 | || intel_state.is_mem > 1) |
5b7c81bd | 776 | jumpabsolute = true; |
ee86248c JB |
777 | else |
778 | switch (intel_state.op_modifier) | |
779 | { | |
780 | case O_near_ptr: | |
781 | if (intel_state.seg) | |
5b7c81bd | 782 | jumpabsolute = true; |
ee86248c JB |
783 | else |
784 | intel_state.is_mem = 1; | |
785 | break; | |
786 | case O_far_ptr: | |
787 | case O_absent: | |
788 | if (!intel_state.seg) | |
789 | { | |
790 | intel_state.is_mem = 1; | |
791 | if (intel_state.op_modifier == O_absent) | |
25303607 L |
792 | { |
793 | if (intel_state.is_indirect == 1) | |
5b7c81bd | 794 | jumpabsolute = true; |
25303607 L |
795 | break; |
796 | } | |
ee86248c JB |
797 | as_bad (_("cannot infer the segment part of the operand")); |
798 | return 0; | |
799 | } | |
800 | else if (S_GET_SEGMENT (intel_state.seg) == reg_section) | |
5b7c81bd | 801 | jumpabsolute = true; |
ee86248c JB |
802 | else |
803 | { | |
804 | i386_operand_type types; | |
805 | ||
806 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
807 | { | |
808 | as_bad (_("at most %d immediate operands are allowed"), | |
809 | MAX_IMMEDIATE_OPERANDS); | |
810 | return 0; | |
811 | } | |
812 | expP = &im_expressions[i.imm_operands++]; | |
813 | memset (expP, 0, sizeof(*expP)); | |
814 | expP->X_op = O_symbol; | |
815 | expP->X_add_symbol = intel_state.seg; | |
816 | i.op[this_operand].imms = expP; | |
817 | ||
818 | resolve_expression (expP); | |
819 | operand_type_set (&types, ~0); | |
820 | if (!i386_finalize_immediate (S_GET_SEGMENT (intel_state.seg), | |
821 | expP, types, operand_string)) | |
822 | return 0; | |
823 | if (i.operands < MAX_OPERANDS) | |
824 | { | |
825 | this_operand = i.operands++; | |
826 | i.types[this_operand].bitfield.unspecified = 1; | |
827 | } | |
828 | if (suffix == LONG_DOUBLE_MNEM_SUFFIX) | |
829 | i.suffix = 0; | |
830 | intel_state.seg = NULL; | |
831 | intel_state.is_mem = 0; | |
832 | } | |
833 | break; | |
834 | default: | |
5b7c81bd | 835 | jumpabsolute = true; |
ee86248c JB |
836 | break; |
837 | } | |
6f2f06be JB |
838 | if (jumpabsolute) |
839 | { | |
5b7c81bd | 840 | i.jumpabsolute = true; |
6f2f06be JB |
841 | intel_state.is_mem |= 1; |
842 | } | |
ee86248c JB |
843 | } |
844 | else if (intel_state.seg) | |
845 | intel_state.is_mem |= 1; | |
846 | ||
847 | if (i.op[this_operand].regs) | |
848 | { | |
849 | i386_operand_type temp; | |
850 | ||
851 | /* Register operand. */ | |
852 | if (intel_state.base || intel_state.index || intel_state.seg) | |
853 | { | |
854 | as_bad (_("invalid operand")); | |
855 | return 0; | |
856 | } | |
857 | ||
858 | temp = i.op[this_operand].regs->reg_type; | |
859 | temp.bitfield.baseindex = 0; | |
f09c1772 L |
860 | i.types[this_operand] = operand_type_or (i.types[this_operand], |
861 | temp); | |
ee86248c JB |
862 | i.types[this_operand].bitfield.unspecified = 0; |
863 | ++i.reg_operands; | |
864 | } | |
f09c1772 L |
865 | else if (intel_state.base |
866 | || intel_state.index | |
867 | || intel_state.seg | |
ee86248c JB |
868 | || intel_state.is_mem) |
869 | { | |
870 | /* Memory operand. */ | |
8325cc63 JB |
871 | if (i.mem_operands == 1 && !maybe_adjust_templates ()) |
872 | return 0; | |
faf786e6 | 873 | if ((int) i.mem_operands |
ee86248c JB |
874 | >= 2 - !current_templates->start->opcode_modifier.isstring) |
875 | { | |
313c53d1 L |
876 | /* Handle |
877 | ||
878 | call 0x9090,0x90909090 | |
879 | lcall 0x9090,0x90909090 | |
880 | jmp 0x9090,0x90909090 | |
881 | ljmp 0x9090,0x90909090 | |
882 | */ | |
883 | ||
0cfa3eb3 JB |
884 | if ((current_templates->start->opcode_modifier.jump == JUMP_INTERSEGMENT |
885 | || current_templates->start->opcode_modifier.jump == JUMP_DWORD | |
886 | || current_templates->start->opcode_modifier.jump == JUMP) | |
313c53d1 L |
887 | && this_operand == 1 |
888 | && intel_state.seg == NULL | |
889 | && i.mem_operands == 1 | |
890 | && i.disp_operands == 1 | |
891 | && intel_state.op_modifier == O_absent) | |
892 | { | |
893 | /* Try to process the first operand as immediate, */ | |
894 | this_operand = 0; | |
895 | if (i386_finalize_immediate (exp_seg, i.op[0].imms, | |
896 | intel_state.reloc_types, | |
897 | NULL)) | |
898 | { | |
899 | this_operand = 1; | |
900 | expP = &im_expressions[0]; | |
901 | i.op[this_operand].imms = expP; | |
902 | *expP = exp; | |
903 | ||
904 | /* Try to process the second operand as immediate, */ | |
905 | if (i386_finalize_immediate (exp_seg, expP, | |
906 | intel_state.reloc_types, | |
907 | NULL)) | |
908 | { | |
909 | i.mem_operands = 0; | |
910 | i.disp_operands = 0; | |
911 | i.imm_operands = 2; | |
c48dadc9 | 912 | i.flags[0] &= ~Operand_Mem; |
313c53d1 L |
913 | i.types[0].bitfield.disp16 = 0; |
914 | i.types[0].bitfield.disp32 = 0; | |
915 | i.types[0].bitfield.disp32s = 0; | |
916 | return 1; | |
917 | } | |
918 | } | |
919 | } | |
920 | ||
ee86248c JB |
921 | as_bad (_("too many memory references for `%s'"), |
922 | current_templates->start->name); | |
923 | return 0; | |
924 | } | |
925 | ||
2abc2bec JB |
926 | /* Swap base and index in 16-bit memory operands like |
927 | [si+bx]. Since i386_index_check is also used in AT&T | |
928 | mode we have to do this here. */ | |
929 | if (intel_state.base | |
930 | && intel_state.index | |
dc821c5f JB |
931 | && intel_state.base->reg_type.bitfield.word |
932 | && intel_state.index->reg_type.bitfield.word | |
2abc2bec JB |
933 | && intel_state.base->reg_num >= 6 |
934 | && intel_state.index->reg_num < 6) | |
935 | { | |
936 | i.base_reg = intel_state.index; | |
937 | i.index_reg = intel_state.base; | |
938 | } | |
939 | else | |
940 | { | |
941 | i.base_reg = intel_state.base; | |
942 | i.index_reg = intel_state.index; | |
943 | } | |
944 | ||
945 | if (i.base_reg || i.index_reg) | |
946 | i.types[this_operand].bitfield.baseindex = 1; | |
947 | ||
ee86248c JB |
948 | expP = &disp_expressions[i.disp_operands]; |
949 | memcpy (expP, &exp, sizeof(exp)); | |
950 | resolve_expression (expP); | |
951 | ||
f09c1772 L |
952 | if (expP->X_op != O_constant |
953 | || expP->X_add_number | |
2abc2bec | 954 | || !i.types[this_operand].bitfield.baseindex) |
ee86248c JB |
955 | { |
956 | i.op[this_operand].disps = expP; | |
957 | i.disp_operands++; | |
958 | ||
2abc2bec JB |
959 | i386_addressing_mode (); |
960 | ||
ee86248c JB |
961 | if (flag_code == CODE_64BIT) |
962 | { | |
ee86248c JB |
963 | if (!i.prefix[ADDR_PREFIX]) |
964 | { | |
965 | i.types[this_operand].bitfield.disp64 = 1; | |
966 | i.types[this_operand].bitfield.disp32s = 1; | |
967 | } | |
48bcea9f JB |
968 | else |
969 | i.types[this_operand].bitfield.disp32 = 1; | |
ee86248c JB |
970 | } |
971 | else if (!i.prefix[ADDR_PREFIX] ^ (flag_code == CODE_16BIT)) | |
972 | i.types[this_operand].bitfield.disp32 = 1; | |
973 | else | |
974 | i.types[this_operand].bitfield.disp16 = 1; | |
975 | ||
976 | #if defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) | |
977 | /* | |
978 | * exp_seg is used only for verification in | |
979 | * i386_finalize_displacement, and we can end up seeing reg_section | |
980 | * here - but we know we removed all registers from the expression | |
981 | * (or error-ed on any remaining ones) in i386_intel_simplify. I | |
982 | * consider the check in i386_finalize_displacement bogus anyway, in | |
983 | * particular because it doesn't allow for expr_section, so I'd | |
984 | * rather see that check (and the similar one in | |
985 | * i386_finalize_immediate) use SEG_NORMAL(), but not being an a.out | |
986 | * expert I can't really say whether that would have other bad side | |
987 | * effects. | |
988 | */ | |
989 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour | |
990 | && exp_seg == reg_section) | |
991 | exp_seg = expP->X_op != O_constant ? undefined_section | |
992 | : absolute_section; | |
993 | #endif | |
994 | ||
995 | if (!i386_finalize_displacement (exp_seg, expP, | |
996 | intel_state.reloc_types, | |
997 | operand_string)) | |
998 | return 0; | |
999 | } | |
1000 | ||
ee86248c JB |
1001 | if (intel_state.seg) |
1002 | { | |
fd4e0347 | 1003 | for (ret = check_none; ; ret = operand_check) |
e21440ba JB |
1004 | { |
1005 | expP = symbol_get_value_expression (intel_state.seg); | |
fd4e0347 JB |
1006 | if (expP->X_op != O_full_ptr |
1007 | || symbol_get_value_expression (expP->X_op_symbol)->X_op | |
1008 | != O_register) | |
e21440ba JB |
1009 | break; |
1010 | intel_state.seg = expP->X_add_symbol; | |
1011 | } | |
0398aac5 | 1012 | if (expP->X_op != O_register) |
ee86248c JB |
1013 | { |
1014 | as_bad (_("segment register name expected")); | |
1015 | return 0; | |
1016 | } | |
00cee14f | 1017 | if (i386_regtab[expP->X_add_number].reg_type.bitfield.class != SReg) |
ee86248c JB |
1018 | { |
1019 | as_bad (_("invalid use of register")); | |
1020 | return 0; | |
1021 | } | |
fd4e0347 JB |
1022 | switch (ret) |
1023 | { | |
1024 | case check_error: | |
1025 | as_bad (_("redundant segment overrides")); | |
1026 | return 0; | |
1027 | case check_warning: | |
1028 | as_warn (_("redundant segment overrides")); | |
1029 | break; | |
1030 | } | |
5e042380 JB |
1031 | if (i386_regtab[expP->X_add_number].reg_num == RegFlat) |
1032 | i.seg[i.mem_operands] = NULL; | |
1033 | else | |
1034 | i.seg[i.mem_operands] = &i386_regtab[expP->X_add_number]; | |
ee86248c JB |
1035 | } |
1036 | ||
ee86248c JB |
1037 | if (!i386_index_check (operand_string)) |
1038 | return 0; | |
1039 | ||
c48dadc9 | 1040 | i.flags[this_operand] |= Operand_Mem; |
8325cc63 JB |
1041 | if (i.mem_operands == 0) |
1042 | i.memop1_string = xstrdup (operand_string); | |
ee86248c JB |
1043 | ++i.mem_operands; |
1044 | } | |
1045 | else | |
1046 | { | |
1047 | /* Immediate. */ | |
1048 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
1049 | { | |
1050 | as_bad (_("at most %d immediate operands are allowed"), | |
1051 | MAX_IMMEDIATE_OPERANDS); | |
1052 | return 0; | |
1053 | } | |
1054 | ||
1055 | expP = &im_expressions[i.imm_operands++]; | |
1056 | i.op[this_operand].imms = expP; | |
1057 | *expP = exp; | |
1058 | ||
1059 | return i386_finalize_immediate (exp_seg, expP, intel_state.reloc_types, | |
1060 | operand_string); | |
1061 | } | |
1062 | ||
1063 | return 1; | |
1064 | } |