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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 | ||
a5748e0d JB |
203 | if (strcasecmp (pname, "bcst") == 0) |
204 | { | |
205 | /* FIXME: Again, what if c == '"' ? */ | |
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; | |
212 | if (!i.broadcast.bytes && !i.broadcast.type) | |
213 | { | |
214 | i.broadcast.bytes = i386_types[j].sz[0]; | |
215 | i.broadcast.operand = this_operand; | |
216 | } | |
217 | return i386_types[j].op; | |
218 | } | |
219 | ||
d02603dc | 220 | (void) restore_line_pointer (c); |
91d6fa6a | 221 | input_line_pointer = pname - 1; |
ee86248c JB |
222 | } |
223 | ||
224 | return O_absent; | |
225 | } | |
226 | ||
227 | static int i386_intel_parse_name (const char *name, expressionS *e) | |
228 | { | |
91d6fa6a | 229 | unsigned int j; |
ee86248c | 230 | |
b7adb16d JB |
231 | if (! strcmp (name, "$")) |
232 | { | |
233 | current_location (e); | |
234 | return 1; | |
235 | } | |
236 | ||
91d6fa6a NC |
237 | for (j = 0; i386_types[j].name; ++j) |
238 | if (strcasecmp(i386_types[j].name, name) == 0) | |
ee86248c JB |
239 | { |
240 | e->X_op = O_constant; | |
91d6fa6a | 241 | e->X_add_number = i386_types[j].sz[flag_code]; |
ee86248c JB |
242 | e->X_add_symbol = NULL; |
243 | e->X_op_symbol = NULL; | |
244 | return 1; | |
245 | } | |
246 | ||
247 | return 0; | |
248 | } | |
249 | ||
91d6fa6a | 250 | static INLINE int i386_intel_check (const reg_entry *rreg, |
ee86248c | 251 | const reg_entry *base, |
91d6fa6a | 252 | const reg_entry *iindex) |
ee86248c | 253 | { |
f09c1772 L |
254 | if ((this_operand >= 0 |
255 | && rreg != i.op[this_operand].regs) | |
256 | || base != intel_state.base | |
257 | || iindex != intel_state.index) | |
ee86248c JB |
258 | { |
259 | as_bad (_("invalid use of register")); | |
260 | return 0; | |
261 | } | |
262 | return 1; | |
263 | } | |
264 | ||
265 | static INLINE void i386_intel_fold (expressionS *e, symbolS *sym) | |
266 | { | |
27dee630 | 267 | expressionS *exp = symbol_get_value_expression (sym); |
ee86248c JB |
268 | if (S_GET_SEGMENT (sym) == absolute_section) |
269 | { | |
270 | offsetT val = e->X_add_number; | |
271 | ||
27dee630 | 272 | *e = *exp; |
ee86248c JB |
273 | e->X_add_number += val; |
274 | } | |
275 | else | |
276 | { | |
27dee630 L |
277 | if (exp->X_op == O_symbol |
278 | && strcmp (S_GET_NAME (exp->X_add_symbol), | |
279 | GLOBAL_OFFSET_TABLE_NAME) == 0) | |
280 | sym = exp->X_add_symbol; | |
ee86248c JB |
281 | e->X_add_symbol = sym; |
282 | e->X_op_symbol = NULL; | |
283 | e->X_op = O_symbol; | |
284 | } | |
285 | } | |
286 | ||
3c7b9c2c L |
287 | static int |
288 | i386_intel_simplify_register (expressionS *e) | |
289 | { | |
290 | int reg_num; | |
291 | ||
292 | if (this_operand < 0 || intel_state.in_offset) | |
293 | { | |
294 | as_bad (_("invalid use of register")); | |
295 | return 0; | |
296 | } | |
297 | ||
298 | if (e->X_op == O_register) | |
299 | reg_num = e->X_add_number; | |
300 | else | |
301 | reg_num = e->X_md - 1; | |
302 | ||
35015cd1 NC |
303 | if (reg_num < 0 || reg_num >= (int) i386_regtab_size) |
304 | { | |
305 | as_bad (_("invalid register number")); | |
306 | return 0; | |
307 | } | |
308 | ||
4faaa10f JB |
309 | if (!check_register (&i386_regtab[reg_num])) |
310 | { | |
311 | as_bad (_("register '%s%s' cannot be used here"), | |
312 | register_prefix, i386_regtab[reg_num].reg_name); | |
313 | return 0; | |
314 | } | |
315 | ||
3c7b9c2c L |
316 | if (!intel_state.in_bracket) |
317 | { | |
318 | if (i.op[this_operand].regs) | |
319 | { | |
320 | as_bad (_("invalid use of register")); | |
321 | return 0; | |
322 | } | |
00cee14f | 323 | if (i386_regtab[reg_num].reg_type.bitfield.class == SReg |
3c7b9c2c L |
324 | && i386_regtab[reg_num].reg_num == RegFlat) |
325 | { | |
326 | as_bad (_("invalid use of pseudo-register")); | |
327 | return 0; | |
328 | } | |
329 | i.op[this_operand].regs = i386_regtab + reg_num; | |
330 | } | |
9e2934f7 | 331 | else if (!intel_state.index |
1b54b8d7 JB |
332 | && (i386_regtab[reg_num].reg_type.bitfield.xmmword |
333 | || i386_regtab[reg_num].reg_type.bitfield.ymmword | |
334 | || i386_regtab[reg_num].reg_type.bitfield.zmmword | |
e968fc9b | 335 | || i386_regtab[reg_num].reg_num == RegIZ)) |
9e2934f7 | 336 | intel_state.index = i386_regtab + reg_num; |
3c7b9c2c L |
337 | else if (!intel_state.base && !intel_state.in_scale) |
338 | intel_state.base = i386_regtab + reg_num; | |
339 | else if (!intel_state.index) | |
9e2934f7 | 340 | { |
a152332d JB |
341 | const insn_template *t = current_templates->start; |
342 | ||
9e2934f7 | 343 | if (intel_state.in_scale |
a152332d | 344 | || (t->opcode_modifier.opcodeprefix == PREFIX_0XF3 |
389d00a5 JB |
345 | && t->opcode_modifier.opcodespace == SPACE_0F |
346 | && t->base_opcode == 0x1b /* bndmk */) | |
a152332d | 347 | || (t->opcode_modifier.opcodeprefix == PREFIX_NONE |
389d00a5 JB |
348 | && t->opcode_modifier.opcodespace == SPACE_0F |
349 | && (t->base_opcode & ~1) == 0x1a /* bnd{ld,st}x */) | |
9e2934f7 JB |
350 | || i386_regtab[reg_num].reg_type.bitfield.baseindex) |
351 | intel_state.index = i386_regtab + reg_num; | |
352 | else | |
353 | { | |
354 | /* Convert base to index and make ESP/RSP the base. */ | |
355 | intel_state.index = intel_state.base; | |
356 | intel_state.base = i386_regtab + reg_num; | |
357 | } | |
358 | } | |
3c7b9c2c L |
359 | else |
360 | { | |
361 | /* esp is invalid as index */ | |
34684862 | 362 | intel_state.index = reg_eax + ESP_REG_NUM; |
3c7b9c2c L |
363 | } |
364 | return 2; | |
365 | } | |
366 | ||
ee86248c JB |
367 | static int i386_intel_simplify (expressionS *); |
368 | ||
369 | static INLINE int i386_intel_simplify_symbol(symbolS *sym) | |
370 | { | |
371 | int ret = i386_intel_simplify (symbol_get_value_expression (sym)); | |
372 | ||
373 | if (ret == 2) | |
374 | { | |
375 | S_SET_SEGMENT(sym, absolute_section); | |
376 | ret = 1; | |
377 | } | |
378 | return ret; | |
379 | } | |
380 | ||
381 | static int i386_intel_simplify (expressionS *e) | |
382 | { | |
f09c1772 L |
383 | const reg_entry *the_reg = (this_operand >= 0 |
384 | ? i.op[this_operand].regs : NULL); | |
ee86248c | 385 | const reg_entry *base = intel_state.base; |
91d6fa6a | 386 | const reg_entry *state_index = intel_state.index; |
ee86248c JB |
387 | int ret; |
388 | ||
389 | if (!intel_syntax) | |
390 | return 1; | |
391 | ||
392 | switch (e->X_op) | |
393 | { | |
394 | case O_index: | |
395 | if (e->X_add_symbol) | |
396 | { | |
397 | if (!i386_intel_simplify_symbol (e->X_add_symbol) | |
f09c1772 L |
398 | || !i386_intel_check(the_reg, intel_state.base, |
399 | intel_state.index)) | |
5bb3703f | 400 | return 0; |
ee86248c JB |
401 | } |
402 | if (!intel_state.in_offset) | |
403 | ++intel_state.in_bracket; | |
404 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
405 | if (!intel_state.in_offset) | |
406 | --intel_state.in_bracket; | |
407 | if (!ret) | |
408 | return 0; | |
409 | if (e->X_add_symbol) | |
410 | e->X_op = O_add; | |
411 | else | |
412 | i386_intel_fold (e, e->X_op_symbol); | |
413 | break; | |
414 | ||
415 | case O_offset: | |
6cee4cda | 416 | intel_state.has_offset = 1; |
ee86248c JB |
417 | ++intel_state.in_offset; |
418 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
419 | --intel_state.in_offset; | |
91d6fa6a | 420 | if (!ret || !i386_intel_check(the_reg, base, state_index)) |
ee86248c JB |
421 | return 0; |
422 | i386_intel_fold (e, e->X_add_symbol); | |
423 | return ret; | |
424 | ||
425 | case O_byte_ptr: | |
426 | case O_word_ptr: | |
427 | case O_dword_ptr: | |
428 | case O_fword_ptr: | |
f2f5811f | 429 | case O_qword_ptr: /* O_mmword_ptr */ |
ee86248c | 430 | case O_tbyte_ptr: |
7456d03d | 431 | case O_oword_ptr: /* O_xmmword_ptr */ |
ee86248c | 432 | case O_ymmword_ptr: |
43234a1e | 433 | case O_zmmword_ptr: |
ee86248c JB |
434 | case O_near_ptr: |
435 | case O_far_ptr: | |
436 | if (intel_state.op_modifier == O_absent) | |
437 | intel_state.op_modifier = e->X_op; | |
438 | /* FALLTHROUGH */ | |
439 | case O_short: | |
f09c1772 L |
440 | if (symbol_get_value_expression (e->X_add_symbol)->X_op |
441 | == O_register) | |
ee86248c JB |
442 | { |
443 | as_bad (_("invalid use of register")); | |
444 | return 0; | |
445 | } | |
446 | if (!i386_intel_simplify_symbol (e->X_add_symbol)) | |
447 | return 0; | |
448 | i386_intel_fold (e, e->X_add_symbol); | |
449 | break; | |
450 | ||
451 | case O_full_ptr: | |
f09c1772 L |
452 | if (symbol_get_value_expression (e->X_op_symbol)->X_op |
453 | == O_register) | |
ee86248c JB |
454 | { |
455 | as_bad (_("invalid use of register")); | |
456 | return 0; | |
457 | } | |
458 | if (!i386_intel_simplify_symbol (e->X_op_symbol) | |
f09c1772 L |
459 | || !i386_intel_check(the_reg, intel_state.base, |
460 | intel_state.index)) | |
ee86248c JB |
461 | return 0; |
462 | if (!intel_state.in_offset) | |
fd4e0347 JB |
463 | { |
464 | if (!intel_state.seg) | |
465 | intel_state.seg = e->X_add_symbol; | |
466 | else | |
467 | { | |
468 | expressionS exp; | |
469 | ||
470 | exp.X_op = O_full_ptr; | |
471 | exp.X_add_symbol = e->X_add_symbol; | |
472 | exp.X_op_symbol = intel_state.seg; | |
473 | intel_state.seg = make_expr_symbol (&exp); | |
474 | } | |
475 | } | |
ee86248c JB |
476 | i386_intel_fold (e, e->X_op_symbol); |
477 | break; | |
478 | ||
ee86248c JB |
479 | case O_multiply: |
480 | if (this_operand >= 0 && intel_state.in_bracket) | |
481 | { | |
482 | expressionS *scale = NULL; | |
c2a5914e | 483 | int has_index = (intel_state.index != NULL); |
ee86248c JB |
484 | |
485 | if (!intel_state.in_scale++) | |
486 | intel_state.scale_factor = 1; | |
487 | ||
488 | ret = i386_intel_simplify_symbol (e->X_add_symbol); | |
c2a5914e | 489 | if (ret && !has_index && intel_state.index) |
ee86248c JB |
490 | scale = symbol_get_value_expression (e->X_op_symbol); |
491 | ||
492 | if (ret) | |
493 | ret = i386_intel_simplify_symbol (e->X_op_symbol); | |
c2a5914e | 494 | if (ret && !scale && !has_index && intel_state.index) |
ee86248c JB |
495 | scale = symbol_get_value_expression (e->X_add_symbol); |
496 | ||
c2a5914e | 497 | if (ret && scale) |
ee86248c JB |
498 | { |
499 | resolve_expression (scale); | |
500 | if (scale->X_op != O_constant | |
dc821c5f | 501 | || intel_state.index->reg_type.bitfield.word) |
ee86248c JB |
502 | scale->X_add_number = 0; |
503 | intel_state.scale_factor *= scale->X_add_number; | |
504 | } | |
505 | ||
506 | --intel_state.in_scale; | |
507 | if (!ret) | |
508 | return 0; | |
509 | ||
510 | if (!intel_state.in_scale) | |
511 | switch (intel_state.scale_factor) | |
512 | { | |
513 | case 1: | |
514 | i.log2_scale_factor = 0; | |
515 | break; | |
516 | case 2: | |
517 | i.log2_scale_factor = 1; | |
518 | break; | |
519 | case 4: | |
520 | i.log2_scale_factor = 2; | |
521 | break; | |
522 | case 8: | |
523 | i.log2_scale_factor = 3; | |
524 | break; | |
525 | default: | |
526 | /* esp is invalid as index */ | |
34684862 | 527 | intel_state.index = reg_eax + ESP_REG_NUM; |
ee86248c JB |
528 | break; |
529 | } | |
530 | ||
531 | break; | |
532 | } | |
92b4f90c | 533 | goto fallthrough; |
3c7b9c2c L |
534 | |
535 | case O_register: | |
536 | ret = i386_intel_simplify_register (e); | |
537 | if (ret == 2) | |
538 | { | |
539 | gas_assert (e->X_add_number < (unsigned short) -1); | |
540 | e->X_md = (unsigned short) e->X_add_number + 1; | |
541 | e->X_op = O_constant; | |
542 | e->X_add_number = 0; | |
543 | } | |
544 | return ret; | |
545 | ||
546 | case O_constant: | |
547 | if (e->X_md) | |
548 | return i386_intel_simplify_register (e); | |
549 | ||
ee86248c JB |
550 | /* FALLTHROUGH */ |
551 | default: | |
dc1e8a47 | 552 | fallthrough: |
f09c1772 L |
553 | if (e->X_add_symbol |
554 | && !i386_intel_simplify_symbol (e->X_add_symbol)) | |
ee86248c | 555 | return 0; |
64d23078 JB |
556 | if (!the_reg && this_operand >= 0 |
557 | && e->X_op == O_symbol && !e->X_add_number) | |
558 | the_reg = i.op[this_operand].regs; | |
ee86248c JB |
559 | if (e->X_op == O_add || e->X_op == O_subtract) |
560 | { | |
561 | base = intel_state.base; | |
91d6fa6a | 562 | state_index = intel_state.index; |
ee86248c | 563 | } |
91d6fa6a | 564 | if (!i386_intel_check (the_reg, base, state_index) |
f09c1772 L |
565 | || (e->X_op_symbol |
566 | && !i386_intel_simplify_symbol (e->X_op_symbol)) | |
91d6fa6a | 567 | || !i386_intel_check (the_reg, |
f09c1772 L |
568 | (e->X_op != O_add |
569 | ? base : intel_state.base), | |
570 | (e->X_op != O_add | |
571 | ? state_index : intel_state.index))) | |
ee86248c JB |
572 | return 0; |
573 | break; | |
574 | } | |
575 | ||
f09c1772 L |
576 | if (this_operand >= 0 |
577 | && e->X_op == O_symbol | |
578 | && !intel_state.in_offset) | |
ee86248c JB |
579 | { |
580 | segT seg = S_GET_SEGMENT (e->X_add_symbol); | |
581 | ||
582 | if (seg != absolute_section | |
583 | && seg != reg_section | |
584 | && seg != expr_section) | |
585 | intel_state.is_mem |= 2 - !intel_state.in_bracket; | |
586 | } | |
587 | ||
588 | return 1; | |
589 | } | |
590 | ||
591 | int i386_need_index_operator (void) | |
592 | { | |
593 | return intel_syntax < 0; | |
594 | } | |
595 | ||
596 | static int | |
597 | i386_intel_operand (char *operand_string, int got_a_float) | |
598 | { | |
599 | char *saved_input_line_pointer, *buf; | |
600 | segT exp_seg; | |
601 | expressionS exp, *expP; | |
602 | char suffix = 0; | |
7063667e | 603 | bool rc_sae_modifier = i.rounding.type != rc_none && i.rounding.modifier; |
ee86248c JB |
604 | int ret; |
605 | ||
43234a1e L |
606 | /* Handle vector immediates. */ |
607 | if (RC_SAE_immediate (operand_string)) | |
cf665fee JB |
608 | { |
609 | if (i.imm_operands) | |
610 | { | |
611 | as_bad (_("`%s': RC/SAE operand must precede immediate operands"), | |
612 | current_templates->start->name); | |
613 | return 0; | |
614 | } | |
615 | ||
616 | return 1; | |
617 | } | |
43234a1e | 618 | |
ee86248c JB |
619 | /* Initialize state structure. */ |
620 | intel_state.op_modifier = O_absent; | |
621 | intel_state.is_mem = 0; | |
25303607 | 622 | intel_state.is_indirect = 0; |
1acf546e | 623 | intel_state.has_offset = 0; |
ee86248c JB |
624 | intel_state.base = NULL; |
625 | intel_state.index = NULL; | |
626 | intel_state.seg = NULL; | |
627 | operand_type_set (&intel_state.reloc_types, ~0); | |
9c2799c2 NC |
628 | gas_assert (!intel_state.in_offset); |
629 | gas_assert (!intel_state.in_bracket); | |
630 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
631 | |
632 | saved_input_line_pointer = input_line_pointer; | |
633 | input_line_pointer = buf = xstrdup (operand_string); | |
634 | ||
635 | intel_syntax = -1; | |
636 | memset (&exp, 0, sizeof(exp)); | |
637 | exp_seg = expression (&exp); | |
638 | ret = i386_intel_simplify (&exp); | |
639 | intel_syntax = 1; | |
640 | ||
641 | SKIP_WHITESPACE (); | |
43234a1e L |
642 | |
643 | /* Handle vector operations. */ | |
644 | if (*input_line_pointer == '{') | |
645 | { | |
f70c6814 | 646 | char *end = check_VecOperations (input_line_pointer); |
43234a1e L |
647 | if (end) |
648 | input_line_pointer = end; | |
649 | else | |
650 | ret = 0; | |
651 | } | |
652 | ||
ee86248c JB |
653 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
654 | { | |
38bf5113 JB |
655 | if (ret) |
656 | as_bad (_("junk `%s' after expression"), input_line_pointer); | |
ee86248c JB |
657 | ret = 0; |
658 | } | |
659 | else if (exp.X_op == O_illegal || exp.X_op == O_absent) | |
660 | { | |
38bf5113 JB |
661 | if (ret) |
662 | as_bad (_("invalid expression")); | |
ee86248c JB |
663 | ret = 0; |
664 | } | |
6cee4cda L |
665 | else if (!intel_state.has_offset |
666 | && input_line_pointer > buf | |
667 | && *(input_line_pointer - 1) == ']') | |
25303607 L |
668 | { |
669 | intel_state.is_mem |= 1; | |
670 | intel_state.is_indirect = 1; | |
671 | } | |
ee86248c JB |
672 | |
673 | input_line_pointer = saved_input_line_pointer; | |
674 | free (buf); | |
675 | ||
9c2799c2 NC |
676 | gas_assert (!intel_state.in_offset); |
677 | gas_assert (!intel_state.in_bracket); | |
678 | gas_assert (!intel_state.in_scale); | |
ee86248c JB |
679 | |
680 | if (!ret) | |
681 | return 0; | |
682 | ||
683 | if (intel_state.op_modifier != O_absent | |
35648716 JB |
684 | && (current_templates->start->opcode_modifier.opcodespace != SPACE_BASE |
685 | || current_templates->start->base_opcode != 0x8d /* lea */)) | |
ee86248c JB |
686 | { |
687 | i.types[this_operand].bitfield.unspecified = 0; | |
688 | ||
689 | switch (intel_state.op_modifier) | |
690 | { | |
691 | case O_byte_ptr: | |
692 | i.types[this_operand].bitfield.byte = 1; | |
693 | suffix = BYTE_MNEM_SUFFIX; | |
694 | break; | |
695 | ||
696 | case O_word_ptr: | |
697 | i.types[this_operand].bitfield.word = 1; | |
37404387 | 698 | if (got_a_float == 2) /* "fi..." */ |
ee86248c | 699 | suffix = SHORT_MNEM_SUFFIX; |
c9f5b96b JB |
700 | else if ((current_templates->start->base_opcode | 1) != 0x03 |
701 | || (current_templates->start->opcode_modifier.opcodespace | |
702 | != SPACE_0F)) /* lar, lsl */ | |
ee86248c JB |
703 | suffix = WORD_MNEM_SUFFIX; |
704 | break; | |
705 | ||
706 | case O_dword_ptr: | |
707 | i.types[this_operand].bitfield.dword = 1; | |
708 | if ((current_templates->start->name[0] == 'l' | |
709 | && current_templates->start->name[2] == 's' | |
710 | && current_templates->start->name[3] == 0) | |
35648716 JB |
711 | || (current_templates->start->opcode_modifier.opcodespace == SPACE_BASE |
712 | && current_templates->start->base_opcode == 0x62 /* bound */)) | |
ee86248c | 713 | suffix = WORD_MNEM_SUFFIX; |
d488367a | 714 | else if (flag_code != CODE_32BIT |
0cfa3eb3 JB |
715 | && (current_templates->start->opcode_modifier.jump == JUMP |
716 | || current_templates->start->opcode_modifier.jump | |
717 | == JUMP_DWORD)) | |
d488367a JB |
718 | suffix = flag_code == CODE_16BIT ? LONG_DOUBLE_MNEM_SUFFIX |
719 | : WORD_MNEM_SUFFIX; | |
ee86248c JB |
720 | else if (got_a_float == 1) /* "f..." */ |
721 | suffix = SHORT_MNEM_SUFFIX; | |
722 | else | |
723 | suffix = LONG_MNEM_SUFFIX; | |
724 | break; | |
725 | ||
726 | case O_fword_ptr: | |
727 | i.types[this_operand].bitfield.fword = 1; | |
728 | if (current_templates->start->name[0] == 'l' | |
729 | && current_templates->start->name[2] == 's' | |
730 | && current_templates->start->name[3] == 0) | |
731 | suffix = LONG_MNEM_SUFFIX; | |
732 | else if (!got_a_float) | |
733 | { | |
734 | if (flag_code == CODE_16BIT) | |
735 | add_prefix (DATA_PREFIX_OPCODE); | |
736 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
737 | } | |
ee86248c JB |
738 | break; |
739 | ||
f2f5811f | 740 | case O_qword_ptr: /* O_mmword_ptr */ |
ee86248c | 741 | i.types[this_operand].bitfield.qword = 1; |
35648716 JB |
742 | if ((current_templates->start->opcode_modifier.opcodespace == SPACE_BASE |
743 | && current_templates->start->base_opcode == 0x62 /* bound */) | |
ee86248c JB |
744 | || got_a_float == 1) /* "f..." */ |
745 | suffix = LONG_MNEM_SUFFIX; | |
746 | else | |
747 | suffix = QWORD_MNEM_SUFFIX; | |
748 | break; | |
749 | ||
750 | case O_tbyte_ptr: | |
751 | i.types[this_operand].bitfield.tbyte = 1; | |
f210f0a0 JB |
752 | if (got_a_float) |
753 | break; | |
754 | if (flag_code == CODE_64BIT | |
755 | && (current_templates->start->operand_types[0].bitfield.fword | |
756 | || current_templates->start->operand_types[0].bitfield.tbyte | |
757 | || current_templates->start->opcode_modifier.jump == JUMP_DWORD | |
758 | || current_templates->start->opcode_modifier.jump == JUMP)) | |
5990e377 | 759 | suffix = QWORD_MNEM_SUFFIX; /* l[fgs]s, [ls][gi]dt, call, jmp */ |
ee86248c | 760 | else |
a8f4f6b9 | 761 | i.types[this_operand].bitfield.byte = 1; /* cause an error */ |
ee86248c JB |
762 | break; |
763 | ||
7456d03d | 764 | case O_oword_ptr: /* O_xmmword_ptr */ |
ee86248c | 765 | i.types[this_operand].bitfield.xmmword = 1; |
ee86248c JB |
766 | break; |
767 | ||
768 | case O_ymmword_ptr: | |
769 | i.types[this_operand].bitfield.ymmword = 1; | |
ee86248c JB |
770 | break; |
771 | ||
43234a1e L |
772 | case O_zmmword_ptr: |
773 | i.types[this_operand].bitfield.zmmword = 1; | |
43234a1e L |
774 | break; |
775 | ||
ee86248c JB |
776 | case O_far_ptr: |
777 | suffix = LONG_DOUBLE_MNEM_SUFFIX; | |
778 | /* FALLTHROUGH */ | |
779 | case O_near_ptr: | |
0cfa3eb3 JB |
780 | if (current_templates->start->opcode_modifier.jump != JUMP |
781 | && current_templates->start->opcode_modifier.jump != JUMP_DWORD) | |
164d49cb JB |
782 | { |
783 | /* cause an error */ | |
784 | i.types[this_operand].bitfield.byte = 1; | |
785 | i.types[this_operand].bitfield.tbyte = 1; | |
786 | suffix = i.suffix; | |
787 | } | |
ee86248c JB |
788 | break; |
789 | ||
790 | default: | |
791 | BAD_CASE (intel_state.op_modifier); | |
792 | break; | |
793 | } | |
794 | ||
1cb0ab18 JB |
795 | /* Now check whether we actually want to infer an AT&T-like suffix. |
796 | We really only need to do this when operand size determination (incl. | |
797 | REX.W) is going to be derived from it. For this we check whether the | |
798 | given suffix is valid for any of the candidate templates. */ | |
799 | if (suffix && suffix != i.suffix | |
800 | && (current_templates->start->opcode_modifier.opcodespace != SPACE_BASE | |
801 | || current_templates->start->base_opcode != 0x62 /* bound */)) | |
802 | { | |
803 | const insn_template *t; | |
804 | ||
805 | for (t = current_templates->start; t < current_templates->end; ++t) | |
806 | { | |
807 | /* Operands haven't been swapped yet. */ | |
808 | unsigned int op = t->operands - 1 - this_operand; | |
809 | ||
810 | /* Easy checks to skip templates which won't match anyway. */ | |
811 | if (this_operand >= t->operands || t->opcode_modifier.attsyntax) | |
812 | continue; | |
813 | ||
814 | switch (suffix) | |
815 | { | |
816 | case BYTE_MNEM_SUFFIX: | |
817 | if (t->opcode_modifier.no_bsuf) | |
818 | continue; | |
819 | break; | |
820 | case WORD_MNEM_SUFFIX: | |
821 | if (t->opcode_modifier.no_wsuf) | |
822 | continue; | |
823 | break; | |
824 | case LONG_MNEM_SUFFIX: | |
825 | if (t->opcode_modifier.no_lsuf) | |
826 | continue; | |
827 | break; | |
828 | case QWORD_MNEM_SUFFIX: | |
829 | if (t->opcode_modifier.no_qsuf) | |
830 | continue; | |
831 | break; | |
832 | case SHORT_MNEM_SUFFIX: | |
833 | if (t->opcode_modifier.no_ssuf) | |
834 | continue; | |
835 | break; | |
836 | case LONG_DOUBLE_MNEM_SUFFIX: | |
837 | if (t->opcode_modifier.no_ldsuf) | |
838 | continue; | |
839 | break; | |
840 | default: | |
841 | abort (); | |
842 | } | |
843 | ||
fcaf78fe JB |
844 | /* We can skip templates with swappable operands here, as one |
845 | operand will be a register, which operand size can be | |
846 | determined from. */ | |
847 | if (t->opcode_modifier.d) | |
848 | continue; | |
849 | ||
1cb0ab18 JB |
850 | /* In a few cases suffixes are permitted, but we can nevertheless |
851 | derive that these aren't going to be needed. This is only of | |
fcaf78fe JB |
852 | interest for insns using ModR/M. */ |
853 | if (!t->opcode_modifier.modrm) | |
1cb0ab18 JB |
854 | break; |
855 | ||
856 | if (!t->operand_types[op].bitfield.baseindex) | |
857 | continue; | |
858 | ||
859 | switch (t->operand_types[op].bitfield.class) | |
860 | { | |
861 | case RegMMX: | |
862 | case RegSIMD: | |
863 | case RegMask: | |
864 | continue; | |
865 | } | |
866 | ||
867 | break; | |
868 | } | |
869 | ||
870 | if (t == current_templates->end) | |
871 | suffix = 0; | |
872 | } | |
873 | ||
ee86248c JB |
874 | if (!i.suffix) |
875 | i.suffix = suffix; | |
1cb0ab18 | 876 | else if (suffix && i.suffix != suffix) |
ee86248c JB |
877 | { |
878 | as_bad (_("conflicting operand size modifiers")); | |
879 | return 0; | |
880 | } | |
881 | } | |
882 | ||
883 | /* Operands for jump/call need special consideration. */ | |
0cfa3eb3 JB |
884 | if (current_templates->start->opcode_modifier.jump == JUMP |
885 | || current_templates->start->opcode_modifier.jump == JUMP_DWORD | |
886 | || current_templates->start->opcode_modifier.jump == JUMP_INTERSEGMENT) | |
ee86248c | 887 | { |
5b7c81bd | 888 | bool jumpabsolute = false; |
6f2f06be | 889 | |
f09c1772 L |
890 | if (i.op[this_operand].regs |
891 | || intel_state.base | |
892 | || intel_state.index | |
ee86248c | 893 | || intel_state.is_mem > 1) |
5b7c81bd | 894 | jumpabsolute = true; |
ee86248c JB |
895 | else |
896 | switch (intel_state.op_modifier) | |
897 | { | |
898 | case O_near_ptr: | |
899 | if (intel_state.seg) | |
5b7c81bd | 900 | jumpabsolute = true; |
ee86248c JB |
901 | else |
902 | intel_state.is_mem = 1; | |
903 | break; | |
904 | case O_far_ptr: | |
905 | case O_absent: | |
906 | if (!intel_state.seg) | |
907 | { | |
908 | intel_state.is_mem = 1; | |
909 | if (intel_state.op_modifier == O_absent) | |
25303607 L |
910 | { |
911 | if (intel_state.is_indirect == 1) | |
5b7c81bd | 912 | jumpabsolute = true; |
25303607 L |
913 | break; |
914 | } | |
ee86248c JB |
915 | as_bad (_("cannot infer the segment part of the operand")); |
916 | return 0; | |
917 | } | |
918 | else if (S_GET_SEGMENT (intel_state.seg) == reg_section) | |
5b7c81bd | 919 | jumpabsolute = true; |
ee86248c JB |
920 | else |
921 | { | |
922 | i386_operand_type types; | |
923 | ||
924 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
925 | { | |
926 | as_bad (_("at most %d immediate operands are allowed"), | |
927 | MAX_IMMEDIATE_OPERANDS); | |
928 | return 0; | |
929 | } | |
930 | expP = &im_expressions[i.imm_operands++]; | |
931 | memset (expP, 0, sizeof(*expP)); | |
932 | expP->X_op = O_symbol; | |
933 | expP->X_add_symbol = intel_state.seg; | |
934 | i.op[this_operand].imms = expP; | |
935 | ||
936 | resolve_expression (expP); | |
937 | operand_type_set (&types, ~0); | |
938 | if (!i386_finalize_immediate (S_GET_SEGMENT (intel_state.seg), | |
939 | expP, types, operand_string)) | |
940 | return 0; | |
941 | if (i.operands < MAX_OPERANDS) | |
942 | { | |
943 | this_operand = i.operands++; | |
944 | i.types[this_operand].bitfield.unspecified = 1; | |
945 | } | |
946 | if (suffix == LONG_DOUBLE_MNEM_SUFFIX) | |
947 | i.suffix = 0; | |
948 | intel_state.seg = NULL; | |
949 | intel_state.is_mem = 0; | |
950 | } | |
951 | break; | |
952 | default: | |
5b7c81bd | 953 | jumpabsolute = true; |
ee86248c JB |
954 | break; |
955 | } | |
6f2f06be JB |
956 | if (jumpabsolute) |
957 | { | |
5b7c81bd | 958 | i.jumpabsolute = true; |
6f2f06be JB |
959 | intel_state.is_mem |= 1; |
960 | } | |
ee86248c JB |
961 | } |
962 | else if (intel_state.seg) | |
963 | intel_state.is_mem |= 1; | |
964 | ||
965 | if (i.op[this_operand].regs) | |
966 | { | |
967 | i386_operand_type temp; | |
968 | ||
969 | /* Register operand. */ | |
970 | if (intel_state.base || intel_state.index || intel_state.seg) | |
971 | { | |
972 | as_bad (_("invalid operand")); | |
973 | return 0; | |
974 | } | |
975 | ||
976 | temp = i.op[this_operand].regs->reg_type; | |
977 | temp.bitfield.baseindex = 0; | |
f09c1772 L |
978 | i.types[this_operand] = operand_type_or (i.types[this_operand], |
979 | temp); | |
ee86248c JB |
980 | i.types[this_operand].bitfield.unspecified = 0; |
981 | ++i.reg_operands; | |
cf665fee | 982 | |
7063667e JB |
983 | if ((i.rounding.type != rc_none && !i.rounding.modifier |
984 | && temp.bitfield.class != Reg) | |
985 | || rc_sae_modifier) | |
cf665fee JB |
986 | { |
987 | unsigned int j; | |
988 | ||
989 | for (j = 0; j < ARRAY_SIZE (RC_NamesTable); ++j) | |
990 | if (i.rounding.type == RC_NamesTable[j].type) | |
991 | break; | |
992 | as_bad (_("`%s': misplaced `{%s}'"), | |
993 | current_templates->start->name, RC_NamesTable[j].name); | |
994 | return 0; | |
995 | } | |
ee86248c | 996 | } |
f09c1772 L |
997 | else if (intel_state.base |
998 | || intel_state.index | |
999 | || intel_state.seg | |
ee86248c JB |
1000 | || intel_state.is_mem) |
1001 | { | |
1002 | /* Memory operand. */ | |
8325cc63 JB |
1003 | if (i.mem_operands == 1 && !maybe_adjust_templates ()) |
1004 | return 0; | |
faf786e6 | 1005 | if ((int) i.mem_operands |
ee86248c JB |
1006 | >= 2 - !current_templates->start->opcode_modifier.isstring) |
1007 | { | |
313c53d1 L |
1008 | /* Handle |
1009 | ||
1010 | call 0x9090,0x90909090 | |
1011 | lcall 0x9090,0x90909090 | |
1012 | jmp 0x9090,0x90909090 | |
1013 | ljmp 0x9090,0x90909090 | |
1014 | */ | |
1015 | ||
0cfa3eb3 JB |
1016 | if ((current_templates->start->opcode_modifier.jump == JUMP_INTERSEGMENT |
1017 | || current_templates->start->opcode_modifier.jump == JUMP_DWORD | |
1018 | || current_templates->start->opcode_modifier.jump == JUMP) | |
313c53d1 L |
1019 | && this_operand == 1 |
1020 | && intel_state.seg == NULL | |
1021 | && i.mem_operands == 1 | |
1022 | && i.disp_operands == 1 | |
1023 | && intel_state.op_modifier == O_absent) | |
1024 | { | |
1025 | /* Try to process the first operand as immediate, */ | |
1026 | this_operand = 0; | |
1027 | if (i386_finalize_immediate (exp_seg, i.op[0].imms, | |
1028 | intel_state.reloc_types, | |
1029 | NULL)) | |
1030 | { | |
1031 | this_operand = 1; | |
1032 | expP = &im_expressions[0]; | |
1033 | i.op[this_operand].imms = expP; | |
1034 | *expP = exp; | |
1035 | ||
1036 | /* Try to process the second operand as immediate, */ | |
1037 | if (i386_finalize_immediate (exp_seg, expP, | |
1038 | intel_state.reloc_types, | |
1039 | NULL)) | |
1040 | { | |
1041 | i.mem_operands = 0; | |
1042 | i.disp_operands = 0; | |
1043 | i.imm_operands = 2; | |
c48dadc9 | 1044 | i.flags[0] &= ~Operand_Mem; |
313c53d1 L |
1045 | i.types[0].bitfield.disp16 = 0; |
1046 | i.types[0].bitfield.disp32 = 0; | |
313c53d1 L |
1047 | return 1; |
1048 | } | |
1049 | } | |
1050 | } | |
1051 | ||
ee86248c JB |
1052 | as_bad (_("too many memory references for `%s'"), |
1053 | current_templates->start->name); | |
1054 | return 0; | |
1055 | } | |
1056 | ||
2abc2bec JB |
1057 | /* Swap base and index in 16-bit memory operands like |
1058 | [si+bx]. Since i386_index_check is also used in AT&T | |
1059 | mode we have to do this here. */ | |
1060 | if (intel_state.base | |
1061 | && intel_state.index | |
dc821c5f JB |
1062 | && intel_state.base->reg_type.bitfield.word |
1063 | && intel_state.index->reg_type.bitfield.word | |
2abc2bec JB |
1064 | && intel_state.base->reg_num >= 6 |
1065 | && intel_state.index->reg_num < 6) | |
1066 | { | |
1067 | i.base_reg = intel_state.index; | |
1068 | i.index_reg = intel_state.base; | |
1069 | } | |
1070 | else | |
1071 | { | |
1072 | i.base_reg = intel_state.base; | |
1073 | i.index_reg = intel_state.index; | |
1074 | } | |
1075 | ||
1076 | if (i.base_reg || i.index_reg) | |
1077 | i.types[this_operand].bitfield.baseindex = 1; | |
1078 | ||
ee86248c JB |
1079 | expP = &disp_expressions[i.disp_operands]; |
1080 | memcpy (expP, &exp, sizeof(exp)); | |
1081 | resolve_expression (expP); | |
1082 | ||
f09c1772 L |
1083 | if (expP->X_op != O_constant |
1084 | || expP->X_add_number | |
2abc2bec | 1085 | || !i.types[this_operand].bitfield.baseindex) |
ee86248c JB |
1086 | { |
1087 | i.op[this_operand].disps = expP; | |
1088 | i.disp_operands++; | |
1089 | ||
2abc2bec JB |
1090 | i386_addressing_mode (); |
1091 | ||
ee86248c JB |
1092 | if (flag_code == CODE_64BIT) |
1093 | { | |
a775efc8 | 1094 | i.types[this_operand].bitfield.disp32 = 1; |
ee86248c | 1095 | if (!i.prefix[ADDR_PREFIX]) |
a775efc8 | 1096 | i.types[this_operand].bitfield.disp64 = 1; |
ee86248c JB |
1097 | } |
1098 | else if (!i.prefix[ADDR_PREFIX] ^ (flag_code == CODE_16BIT)) | |
1099 | i.types[this_operand].bitfield.disp32 = 1; | |
1100 | else | |
1101 | i.types[this_operand].bitfield.disp16 = 1; | |
1102 | ||
1103 | #if defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) | |
1104 | /* | |
1105 | * exp_seg is used only for verification in | |
1106 | * i386_finalize_displacement, and we can end up seeing reg_section | |
1107 | * here - but we know we removed all registers from the expression | |
1108 | * (or error-ed on any remaining ones) in i386_intel_simplify. I | |
1109 | * consider the check in i386_finalize_displacement bogus anyway, in | |
1110 | * particular because it doesn't allow for expr_section, so I'd | |
1111 | * rather see that check (and the similar one in | |
1112 | * i386_finalize_immediate) use SEG_NORMAL(), but not being an a.out | |
1113 | * expert I can't really say whether that would have other bad side | |
1114 | * effects. | |
1115 | */ | |
1116 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour | |
1117 | && exp_seg == reg_section) | |
1118 | exp_seg = expP->X_op != O_constant ? undefined_section | |
1119 | : absolute_section; | |
1120 | #endif | |
1121 | ||
1122 | if (!i386_finalize_displacement (exp_seg, expP, | |
1123 | intel_state.reloc_types, | |
1124 | operand_string)) | |
1125 | return 0; | |
1126 | } | |
1127 | ||
ee86248c JB |
1128 | if (intel_state.seg) |
1129 | { | |
fd4e0347 | 1130 | for (ret = check_none; ; ret = operand_check) |
e21440ba JB |
1131 | { |
1132 | expP = symbol_get_value_expression (intel_state.seg); | |
fd4e0347 JB |
1133 | if (expP->X_op != O_full_ptr |
1134 | || symbol_get_value_expression (expP->X_op_symbol)->X_op | |
1135 | != O_register) | |
e21440ba JB |
1136 | break; |
1137 | intel_state.seg = expP->X_add_symbol; | |
1138 | } | |
0398aac5 | 1139 | if (expP->X_op != O_register) |
ee86248c JB |
1140 | { |
1141 | as_bad (_("segment register name expected")); | |
1142 | return 0; | |
1143 | } | |
00cee14f | 1144 | if (i386_regtab[expP->X_add_number].reg_type.bitfield.class != SReg) |
ee86248c JB |
1145 | { |
1146 | as_bad (_("invalid use of register")); | |
1147 | return 0; | |
1148 | } | |
fd4e0347 JB |
1149 | switch (ret) |
1150 | { | |
1151 | case check_error: | |
1152 | as_bad (_("redundant segment overrides")); | |
1153 | return 0; | |
1154 | case check_warning: | |
1155 | as_warn (_("redundant segment overrides")); | |
1156 | break; | |
1157 | } | |
5e042380 JB |
1158 | if (i386_regtab[expP->X_add_number].reg_num == RegFlat) |
1159 | i.seg[i.mem_operands] = NULL; | |
1160 | else | |
1161 | i.seg[i.mem_operands] = &i386_regtab[expP->X_add_number]; | |
ee86248c JB |
1162 | } |
1163 | ||
ee86248c JB |
1164 | if (!i386_index_check (operand_string)) |
1165 | return 0; | |
1166 | ||
c48dadc9 | 1167 | i.flags[this_operand] |= Operand_Mem; |
8325cc63 JB |
1168 | if (i.mem_operands == 0) |
1169 | i.memop1_string = xstrdup (operand_string); | |
ee86248c JB |
1170 | ++i.mem_operands; |
1171 | } | |
1172 | else | |
1173 | { | |
1174 | /* Immediate. */ | |
1175 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) | |
1176 | { | |
1177 | as_bad (_("at most %d immediate operands are allowed"), | |
1178 | MAX_IMMEDIATE_OPERANDS); | |
1179 | return 0; | |
1180 | } | |
1181 | ||
1182 | expP = &im_expressions[i.imm_operands++]; | |
1183 | i.op[this_operand].imms = expP; | |
1184 | *expP = exp; | |
1185 | ||
1186 | return i386_finalize_immediate (exp_seg, expP, intel_state.reloc_types, | |
1187 | operand_string); | |
1188 | } | |
1189 | ||
1190 | return 1; | |
1191 | } |