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[mirror_qemu.git] / target-i386 / translate.c
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2c0262af
FB		 1/*
2 * i386 translation
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library 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 GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20#include <stdarg.h>
21#include <stdlib.h>
22#include <stdio.h>
23#include <string.h>
24#include <inttypes.h>
25#include <signal.h>
26#include <assert.h>
2c0262af
FB		 27
28#include "cpu.h"
29#include "exec-all.h"
30#include "disas.h"
31
32/* XXX: move that elsewhere */
33static uint16_t *gen_opc_ptr;
34static uint32_t *gen_opparam_ptr;
35
36#define PREFIX_REPZ 0x01
37#define PREFIX_REPNZ 0x02
38#define PREFIX_LOCK 0x04
39#define PREFIX_DATA 0x08
40#define PREFIX_ADR 0x10
41
42typedef struct DisasContext {
43 /* current insn context */
44 int override; /* -1 if no override */
45 int prefix;
46 int aflag, dflag;
47 uint8_t *pc; /* pc = eip + cs_base */
48 int is_jmp; /* 1 = means jump (stop translation), 2 means CPU
49 static state change (stop translation) */
50 /* current block context */
51 uint8_t *cs_base; /* base of CS segment */
52 int pe; /* protected mode */
53 int code32; /* 32 bit code segment */
54 int ss32; /* 32 bit stack segment */
55 int cc_op; /* current CC operation */
56 int addseg; /* non zero if either DS/ES/SS have a non zero base */
57 int f_st; /* currently unused */
58 int vm86; /* vm86 mode */
59 int cpl;
60 int iopl;
61 int tf; /* TF cpu flag */
34865134 62 int singlestep_enabled; /* "hardware" single step enabled */
2c0262af
FB		 63 int jmp_opt; /* use direct block chaining for direct jumps */
64 int mem_index; /* select memory access functions */
7eee2a50 65 int flags; /* all execution flags */
2c0262af
FB		 66 struct TranslationBlock *tb;
67 int popl_esp_hack; /* for correct popl with esp base handling */
68} DisasContext;
69
70static void gen_eob(DisasContext *s);
71static void gen_jmp(DisasContext *s, unsigned int eip);
72
73/* i386 arith/logic operations */
74enum {
75 OP_ADDL,
76 OP_ORL,
77 OP_ADCL,
78 OP_SBBL,
79 OP_ANDL,
80 OP_SUBL,
81 OP_XORL,
82 OP_CMPL,
83};
84
85/* i386 shift ops */
86enum {
87 OP_ROL,
88 OP_ROR,
89 OP_RCL,
90 OP_RCR,
91 OP_SHL,
92 OP_SHR,
93 OP_SHL1, /* undocumented */
94 OP_SAR = 7,
95};
96
97enum {
98#define DEF(s, n, copy_size) INDEX_op_ ## s,
99#include "opc.h"
100#undef DEF
101 NB_OPS,
102};
103
104#include "gen-op.h"
105
106/* operand size */
107enum {
108 OT_BYTE = 0,
109 OT_WORD,
110 OT_LONG,
111 OT_QUAD,
112};
113
114enum {
115 /* I386 int registers */
116 OR_EAX, /* MUST be even numbered */
117 OR_ECX,
118 OR_EDX,
119 OR_EBX,
120 OR_ESP,
121 OR_EBP,
122 OR_ESI,
123 OR_EDI,
124 OR_TMP0, /* temporary operand register */
125 OR_TMP1,
126 OR_A0, /* temporary register used when doing address evaluation */
127 OR_ZERO, /* fixed zero register */
128 NB_OREGS,
129};
130
2c0262af
FB		 131static GenOpFunc *gen_op_mov_reg_T0[3][8] = {
132 [OT_BYTE] = {
133 gen_op_movb_EAX_T0,
134 gen_op_movb_ECX_T0,
135 gen_op_movb_EDX_T0,
136 gen_op_movb_EBX_T0,
137 gen_op_movh_EAX_T0,
138 gen_op_movh_ECX_T0,
139 gen_op_movh_EDX_T0,
140 gen_op_movh_EBX_T0,
141 },
142 [OT_WORD] = {
143 gen_op_movw_EAX_T0,
144 gen_op_movw_ECX_T0,
145 gen_op_movw_EDX_T0,
146 gen_op_movw_EBX_T0,
147 gen_op_movw_ESP_T0,
148 gen_op_movw_EBP_T0,
149 gen_op_movw_ESI_T0,
150 gen_op_movw_EDI_T0,
151 },
152 [OT_LONG] = {
153 gen_op_movl_EAX_T0,
154 gen_op_movl_ECX_T0,
155 gen_op_movl_EDX_T0,
156 gen_op_movl_EBX_T0,
157 gen_op_movl_ESP_T0,
158 gen_op_movl_EBP_T0,
159 gen_op_movl_ESI_T0,
160 gen_op_movl_EDI_T0,
161 },
162};
163
164static GenOpFunc *gen_op_mov_reg_T1[3][8] = {
165 [OT_BYTE] = {
166 gen_op_movb_EAX_T1,
167 gen_op_movb_ECX_T1,
168 gen_op_movb_EDX_T1,
169 gen_op_movb_EBX_T1,
170 gen_op_movh_EAX_T1,
171 gen_op_movh_ECX_T1,
172 gen_op_movh_EDX_T1,
173 gen_op_movh_EBX_T1,
174 },
175 [OT_WORD] = {
176 gen_op_movw_EAX_T1,
177 gen_op_movw_ECX_T1,
178 gen_op_movw_EDX_T1,
179 gen_op_movw_EBX_T1,
180 gen_op_movw_ESP_T1,
181 gen_op_movw_EBP_T1,
182 gen_op_movw_ESI_T1,
183 gen_op_movw_EDI_T1,
184 },
185 [OT_LONG] = {
186 gen_op_movl_EAX_T1,
187 gen_op_movl_ECX_T1,
188 gen_op_movl_EDX_T1,
189 gen_op_movl_EBX_T1,
190 gen_op_movl_ESP_T1,
191 gen_op_movl_EBP_T1,
192 gen_op_movl_ESI_T1,
193 gen_op_movl_EDI_T1,
194 },
195};
196
197static GenOpFunc *gen_op_mov_reg_A0[2][8] = {
198 [0] = {
199 gen_op_movw_EAX_A0,
200 gen_op_movw_ECX_A0,
201 gen_op_movw_EDX_A0,
202 gen_op_movw_EBX_A0,
203 gen_op_movw_ESP_A0,
204 gen_op_movw_EBP_A0,
205 gen_op_movw_ESI_A0,
206 gen_op_movw_EDI_A0,
207 },
208 [1] = {
209 gen_op_movl_EAX_A0,
210 gen_op_movl_ECX_A0,
211 gen_op_movl_EDX_A0,
212 gen_op_movl_EBX_A0,
213 gen_op_movl_ESP_A0,
214 gen_op_movl_EBP_A0,
215 gen_op_movl_ESI_A0,
216 gen_op_movl_EDI_A0,
217 },
218};
219
220static GenOpFunc *gen_op_mov_TN_reg[3][2][8] =
221{
222 [OT_BYTE] = {
223 {
224 gen_op_movl_T0_EAX,
225 gen_op_movl_T0_ECX,
226 gen_op_movl_T0_EDX,
227 gen_op_movl_T0_EBX,
228 gen_op_movh_T0_EAX,
229 gen_op_movh_T0_ECX,
230 gen_op_movh_T0_EDX,
231 gen_op_movh_T0_EBX,
232 },
233 {
234 gen_op_movl_T1_EAX,
235 gen_op_movl_T1_ECX,
236 gen_op_movl_T1_EDX,
237 gen_op_movl_T1_EBX,
238 gen_op_movh_T1_EAX,
239 gen_op_movh_T1_ECX,
240 gen_op_movh_T1_EDX,
241 gen_op_movh_T1_EBX,
242 },
243 },
244 [OT_WORD] = {
245 {
246 gen_op_movl_T0_EAX,
247 gen_op_movl_T0_ECX,
248 gen_op_movl_T0_EDX,
249 gen_op_movl_T0_EBX,
250 gen_op_movl_T0_ESP,
251 gen_op_movl_T0_EBP,
252 gen_op_movl_T0_ESI,
253 gen_op_movl_T0_EDI,
254 },
255 {
256 gen_op_movl_T1_EAX,
257 gen_op_movl_T1_ECX,
258 gen_op_movl_T1_EDX,
259 gen_op_movl_T1_EBX,
260 gen_op_movl_T1_ESP,
261 gen_op_movl_T1_EBP,
262 gen_op_movl_T1_ESI,
263 gen_op_movl_T1_EDI,
264 },
265 },
266 [OT_LONG] = {
267 {
268 gen_op_movl_T0_EAX,
269 gen_op_movl_T0_ECX,
270 gen_op_movl_T0_EDX,
271 gen_op_movl_T0_EBX,
272 gen_op_movl_T0_ESP,
273 gen_op_movl_T0_EBP,
274 gen_op_movl_T0_ESI,
275 gen_op_movl_T0_EDI,
276 },
277 {
278 gen_op_movl_T1_EAX,
279 gen_op_movl_T1_ECX,
280 gen_op_movl_T1_EDX,
281 gen_op_movl_T1_EBX,
282 gen_op_movl_T1_ESP,
283 gen_op_movl_T1_EBP,
284 gen_op_movl_T1_ESI,
285 gen_op_movl_T1_EDI,
286 },
287 },
288};
289
290static GenOpFunc *gen_op_movl_A0_reg[8] = {
291 gen_op_movl_A0_EAX,
292 gen_op_movl_A0_ECX,
293 gen_op_movl_A0_EDX,
294 gen_op_movl_A0_EBX,
295 gen_op_movl_A0_ESP,
296 gen_op_movl_A0_EBP,
297 gen_op_movl_A0_ESI,
298 gen_op_movl_A0_EDI,
299};
300
301static GenOpFunc *gen_op_addl_A0_reg_sN[4][8] = {
302 [0] = {
303 gen_op_addl_A0_EAX,
304 gen_op_addl_A0_ECX,
305 gen_op_addl_A0_EDX,
306 gen_op_addl_A0_EBX,
307 gen_op_addl_A0_ESP,
308 gen_op_addl_A0_EBP,
309 gen_op_addl_A0_ESI,
310 gen_op_addl_A0_EDI,
311 },
312 [1] = {
313 gen_op_addl_A0_EAX_s1,
314 gen_op_addl_A0_ECX_s1,
315 gen_op_addl_A0_EDX_s1,
316 gen_op_addl_A0_EBX_s1,
317 gen_op_addl_A0_ESP_s1,
318 gen_op_addl_A0_EBP_s1,
319 gen_op_addl_A0_ESI_s1,
320 gen_op_addl_A0_EDI_s1,
321 },
322 [2] = {
323 gen_op_addl_A0_EAX_s2,
324 gen_op_addl_A0_ECX_s2,
325 gen_op_addl_A0_EDX_s2,
326 gen_op_addl_A0_EBX_s2,
327 gen_op_addl_A0_ESP_s2,
328 gen_op_addl_A0_EBP_s2,
329 gen_op_addl_A0_ESI_s2,
330 gen_op_addl_A0_EDI_s2,
331 },
332 [3] = {
333 gen_op_addl_A0_EAX_s3,
334 gen_op_addl_A0_ECX_s3,
335 gen_op_addl_A0_EDX_s3,
336 gen_op_addl_A0_EBX_s3,
337 gen_op_addl_A0_ESP_s3,
338 gen_op_addl_A0_EBP_s3,
339 gen_op_addl_A0_ESI_s3,
340 gen_op_addl_A0_EDI_s3,
341 },
342};
343
344static GenOpFunc *gen_op_cmov_reg_T1_T0[2][8] = {
345 [0] = {
346 gen_op_cmovw_EAX_T1_T0,
347 gen_op_cmovw_ECX_T1_T0,
348 gen_op_cmovw_EDX_T1_T0,
349 gen_op_cmovw_EBX_T1_T0,
350 gen_op_cmovw_ESP_T1_T0,
351 gen_op_cmovw_EBP_T1_T0,
352 gen_op_cmovw_ESI_T1_T0,
353 gen_op_cmovw_EDI_T1_T0,
354 },
355 [1] = {
356 gen_op_cmovl_EAX_T1_T0,
357 gen_op_cmovl_ECX_T1_T0,
358 gen_op_cmovl_EDX_T1_T0,
359 gen_op_cmovl_EBX_T1_T0,
360 gen_op_cmovl_ESP_T1_T0,
361 gen_op_cmovl_EBP_T1_T0,
362 gen_op_cmovl_ESI_T1_T0,
363 gen_op_cmovl_EDI_T1_T0,
364 },
365};
366
367static GenOpFunc *gen_op_arith_T0_T1_cc[8] = {
368 NULL,
369 gen_op_orl_T0_T1,
370 NULL,
371 NULL,
372 gen_op_andl_T0_T1,
373 NULL,
374 gen_op_xorl_T0_T1,
375 NULL,
376};
377
4f31916f
FB		 378#define DEF_ARITHC(SUFFIX)\
379 {\
380 gen_op_adcb ## SUFFIX ## _T0_T1_cc,\
381 gen_op_sbbb ## SUFFIX ## _T0_T1_cc,\
382 },\
383 {\
384 gen_op_adcw ## SUFFIX ## _T0_T1_cc,\
385 gen_op_sbbw ## SUFFIX ## _T0_T1_cc,\
386 },\
387 {\
388 gen_op_adcl ## SUFFIX ## _T0_T1_cc,\
389 gen_op_sbbl ## SUFFIX ## _T0_T1_cc,\
2c0262af 390 },
4f31916f
FB		 391
392static GenOpFunc *gen_op_arithc_T0_T1_cc[3][2] = {
4bb2fcc7 393 DEF_ARITHC( )
2c0262af
FB		 394};
395
4f31916f
FB		 396static GenOpFunc *gen_op_arithc_mem_T0_T1_cc[9][2] = {
397 DEF_ARITHC(_raw)
398#ifndef CONFIG_USER_ONLY
399 DEF_ARITHC(_kernel)
400 DEF_ARITHC(_user)
401#endif
2c0262af
FB		 402};
403
404static const int cc_op_arithb[8] = {
405 CC_OP_ADDB,
406 CC_OP_LOGICB,
407 CC_OP_ADDB,
408 CC_OP_SUBB,
409 CC_OP_LOGICB,
410 CC_OP_SUBB,
411 CC_OP_LOGICB,
412 CC_OP_SUBB,
413};
414
4f31916f
FB		 415#define DEF_CMPXCHG(SUFFIX)\
416 gen_op_cmpxchgb ## SUFFIX ## _T0_T1_EAX_cc,\
417 gen_op_cmpxchgw ## SUFFIX ## _T0_T1_EAX_cc,\
418 gen_op_cmpxchgl ## SUFFIX ## _T0_T1_EAX_cc,
419
420
2c0262af 421static GenOpFunc *gen_op_cmpxchg_T0_T1_EAX_cc[3] = {
4bb2fcc7 422 DEF_CMPXCHG( )
2c0262af
FB		 423};
424
4f31916f
FB		 425static GenOpFunc *gen_op_cmpxchg_mem_T0_T1_EAX_cc[9] = {
426 DEF_CMPXCHG(_raw)
427#ifndef CONFIG_USER_ONLY
428 DEF_CMPXCHG(_kernel)
429 DEF_CMPXCHG(_user)
430#endif
2c0262af
FB		 431};
432
4f31916f
FB		 433#define DEF_SHIFT(SUFFIX)\
434 {\
435 gen_op_rolb ## SUFFIX ## _T0_T1_cc,\
436 gen_op_rorb ## SUFFIX ## _T0_T1_cc,\
437 gen_op_rclb ## SUFFIX ## _T0_T1_cc,\
438 gen_op_rcrb ## SUFFIX ## _T0_T1_cc,\
439 gen_op_shlb ## SUFFIX ## _T0_T1_cc,\
440 gen_op_shrb ## SUFFIX ## _T0_T1_cc,\
441 gen_op_shlb ## SUFFIX ## _T0_T1_cc,\
442 gen_op_sarb ## SUFFIX ## _T0_T1_cc,\
443 },\
444 {\
445 gen_op_rolw ## SUFFIX ## _T0_T1_cc,\
446 gen_op_rorw ## SUFFIX ## _T0_T1_cc,\
447 gen_op_rclw ## SUFFIX ## _T0_T1_cc,\
448 gen_op_rcrw ## SUFFIX ## _T0_T1_cc,\
449 gen_op_shlw ## SUFFIX ## _T0_T1_cc,\
450 gen_op_shrw ## SUFFIX ## _T0_T1_cc,\
451 gen_op_shlw ## SUFFIX ## _T0_T1_cc,\
452 gen_op_sarw ## SUFFIX ## _T0_T1_cc,\
453 },\
454 {\
455 gen_op_roll ## SUFFIX ## _T0_T1_cc,\
456 gen_op_rorl ## SUFFIX ## _T0_T1_cc,\
457 gen_op_rcll ## SUFFIX ## _T0_T1_cc,\
458 gen_op_rcrl ## SUFFIX ## _T0_T1_cc,\
459 gen_op_shll ## SUFFIX ## _T0_T1_cc,\
460 gen_op_shrl ## SUFFIX ## _T0_T1_cc,\
461 gen_op_shll ## SUFFIX ## _T0_T1_cc,\
462 gen_op_sarl ## SUFFIX ## _T0_T1_cc,\
2c0262af 463 },
4f31916f
FB		 464
465static GenOpFunc *gen_op_shift_T0_T1_cc[3][8] = {
4bb2fcc7 466 DEF_SHIFT( )
2c0262af
FB		 467};
468
4f31916f
FB		 469static GenOpFunc *gen_op_shift_mem_T0_T1_cc[9][8] = {
470 DEF_SHIFT(_raw)
471#ifndef CONFIG_USER_ONLY
472 DEF_SHIFT(_kernel)
473 DEF_SHIFT(_user)
474#endif
2c0262af
FB		 475};
476
4f31916f
FB		 477#define DEF_SHIFTD(SUFFIX, op)\
478 {\
479 NULL,\
480 NULL,\
481 },\
482 {\
483 gen_op_shldw ## SUFFIX ## _T0_T1_ ## op ## _cc,\
484 gen_op_shrdw ## SUFFIX ## _T0_T1_ ## op ## _cc,\
485 },\
486 {\
487 gen_op_shldl ## SUFFIX ## _T0_T1_ ## op ## _cc,\
488 gen_op_shrdl ## SUFFIX ## _T0_T1_ ## op ## _cc,\
2c0262af 489 },
4f31916f
FB		 490
491
492static GenOpFunc1 *gen_op_shiftd_T0_T1_im_cc[3][2] = {
493 DEF_SHIFTD(, im)
2c0262af
FB		 494};
495
4f31916f
FB		 496static GenOpFunc *gen_op_shiftd_T0_T1_ECX_cc[3][2] = {
497 DEF_SHIFTD(, ECX)
2c0262af
FB		 498};
499
4f31916f
FB		 500static GenOpFunc1 *gen_op_shiftd_mem_T0_T1_im_cc[9][2] = {
501 DEF_SHIFTD(_raw, im)
502#ifndef CONFIG_USER_ONLY
503 DEF_SHIFTD(_kernel, im)
504 DEF_SHIFTD(_user, im)
505#endif
2c0262af
FB		 506};
507
4f31916f
FB		 508static GenOpFunc *gen_op_shiftd_mem_T0_T1_ECX_cc[9][2] = {
509 DEF_SHIFTD(_raw, ECX)
510#ifndef CONFIG_USER_ONLY
511 DEF_SHIFTD(_kernel, ECX)
512 DEF_SHIFTD(_user, ECX)
513#endif
2c0262af
FB		 514};
515
516static GenOpFunc *gen_op_btx_T0_T1_cc[2][4] = {
517 [0] = {
518 gen_op_btw_T0_T1_cc,
519 gen_op_btsw_T0_T1_cc,
520 gen_op_btrw_T0_T1_cc,
521 gen_op_btcw_T0_T1_cc,
522 },
523 [1] = {
524 gen_op_btl_T0_T1_cc,
525 gen_op_btsl_T0_T1_cc,
526 gen_op_btrl_T0_T1_cc,
527 gen_op_btcl_T0_T1_cc,
528 },
529};
530
531static GenOpFunc *gen_op_bsx_T0_cc[2][2] = {
532 [0] = {
533 gen_op_bsfw_T0_cc,
534 gen_op_bsrw_T0_cc,
535 },
536 [1] = {
537 gen_op_bsfl_T0_cc,
538 gen_op_bsrl_T0_cc,
539 },
540};
541
542static GenOpFunc *gen_op_lds_T0_A0[3 * 3] = {
61382a50
FB		 543 gen_op_ldsb_raw_T0_A0,
544 gen_op_ldsw_raw_T0_A0,
2c0262af 545 NULL,
61382a50 546#ifndef CONFIG_USER_ONLY
2c0262af
FB		 547 gen_op_ldsb_kernel_T0_A0,
548 gen_op_ldsw_kernel_T0_A0,
549 NULL,
550
551 gen_op_ldsb_user_T0_A0,
552 gen_op_ldsw_user_T0_A0,
553 NULL,
61382a50 554#endif
2c0262af
FB		 555};
556
557static GenOpFunc *gen_op_ldu_T0_A0[3 * 3] = {
61382a50
FB		 558 gen_op_ldub_raw_T0_A0,
559 gen_op_lduw_raw_T0_A0,
2c0262af
FB		 560 NULL,
561
61382a50 562#ifndef CONFIG_USER_ONLY
2c0262af
FB		 563 gen_op_ldub_kernel_T0_A0,
564 gen_op_lduw_kernel_T0_A0,
565 NULL,
566
567 gen_op_ldub_user_T0_A0,
568 gen_op_lduw_user_T0_A0,
569 NULL,
61382a50 570#endif
2c0262af
FB		 571};
572
573/* sign does not matter, except for lidt/lgdt call (TODO: fix it) */
574static GenOpFunc *gen_op_ld_T0_A0[3 * 3] = {
61382a50
FB		 575 gen_op_ldub_raw_T0_A0,
576 gen_op_lduw_raw_T0_A0,
577 gen_op_ldl_raw_T0_A0,
2c0262af 578
61382a50 579#ifndef CONFIG_USER_ONLY
2c0262af
FB		 580 gen_op_ldub_kernel_T0_A0,
581 gen_op_lduw_kernel_T0_A0,
582 gen_op_ldl_kernel_T0_A0,
583
584 gen_op_ldub_user_T0_A0,
585 gen_op_lduw_user_T0_A0,
586 gen_op_ldl_user_T0_A0,
61382a50 587#endif
2c0262af
FB		 588};
589
590static GenOpFunc *gen_op_ld_T1_A0[3 * 3] = {
61382a50
FB		 591 gen_op_ldub_raw_T1_A0,
592 gen_op_lduw_raw_T1_A0,
593 gen_op_ldl_raw_T1_A0,
2c0262af 594
61382a50 595#ifndef CONFIG_USER_ONLY
2c0262af
FB		 596 gen_op_ldub_kernel_T1_A0,
597 gen_op_lduw_kernel_T1_A0,
598 gen_op_ldl_kernel_T1_A0,
599
600 gen_op_ldub_user_T1_A0,
601 gen_op_lduw_user_T1_A0,
602 gen_op_ldl_user_T1_A0,
61382a50 603#endif
2c0262af
FB		 604};
605
606static GenOpFunc *gen_op_st_T0_A0[3 * 3] = {
61382a50
FB		 607 gen_op_stb_raw_T0_A0,
608 gen_op_stw_raw_T0_A0,
609 gen_op_stl_raw_T0_A0,
2c0262af 610
61382a50 611#ifndef CONFIG_USER_ONLY
2c0262af
FB		 612 gen_op_stb_kernel_T0_A0,
613 gen_op_stw_kernel_T0_A0,
614 gen_op_stl_kernel_T0_A0,
615
616 gen_op_stb_user_T0_A0,
617 gen_op_stw_user_T0_A0,
618 gen_op_stl_user_T0_A0,
61382a50 619#endif
2c0262af
FB		 620};
621
4f31916f
FB		 622static GenOpFunc *gen_op_st_T1_A0[3 * 3] = {
623 NULL,
624 gen_op_stw_raw_T1_A0,
625 gen_op_stl_raw_T1_A0,
626
627#ifndef CONFIG_USER_ONLY
628 NULL,
629 gen_op_stw_kernel_T1_A0,
630 gen_op_stl_kernel_T1_A0,
631
632 NULL,
633 gen_op_stw_user_T1_A0,
634 gen_op_stl_user_T1_A0,
635#endif
636};
637
2c0262af
FB		 638static inline void gen_string_movl_A0_ESI(DisasContext *s)
639{
640 int override;
641
642 override = s->override;
643 if (s->aflag) {
644 /* 32 bit address */
645 if (s->addseg && override < 0)
646 override = R_DS;
647 if (override >= 0) {
648 gen_op_movl_A0_seg(offsetof(CPUX86State,segs[override].base));
649 gen_op_addl_A0_reg_sN[0][R_ESI]();
650 } else {
651 gen_op_movl_A0_reg[R_ESI]();
652 }
653 } else {
654 /* 16 address, always override */
655 if (override < 0)
656 override = R_DS;
657 gen_op_movl_A0_reg[R_ESI]();
658 gen_op_andl_A0_ffff();
659 gen_op_addl_A0_seg(offsetof(CPUX86State,segs[override].base));
660 }
661}
662
663static inline void gen_string_movl_A0_EDI(DisasContext *s)
664{
665 if (s->aflag) {
666 if (s->addseg) {
667 gen_op_movl_A0_seg(offsetof(CPUX86State,segs[R_ES].base));
668 gen_op_addl_A0_reg_sN[0][R_EDI]();
669 } else {
670 gen_op_movl_A0_reg[R_EDI]();
671 }
672 } else {
673 gen_op_movl_A0_reg[R_EDI]();
674 gen_op_andl_A0_ffff();
675 gen_op_addl_A0_seg(offsetof(CPUX86State,segs[R_ES].base));
676 }
677}
678
679static GenOpFunc *gen_op_movl_T0_Dshift[3] = {
680 gen_op_movl_T0_Dshiftb,
681 gen_op_movl_T0_Dshiftw,
682 gen_op_movl_T0_Dshiftl,
683};
684
685static GenOpFunc2 *gen_op_jz_ecx[2] = {
686 gen_op_jz_ecxw,
687 gen_op_jz_ecxl,
688};
689
690static GenOpFunc1 *gen_op_jz_ecx_im[2] = {
691 gen_op_jz_ecxw_im,
692 gen_op_jz_ecxl_im,
693};
694
695static GenOpFunc *gen_op_dec_ECX[2] = {
696 gen_op_decw_ECX,
697 gen_op_decl_ECX,
698};
699
7399c5a9
FB		 700#ifdef USE_DIRECT_JUMP
701typedef GenOpFunc GenOpFuncTB2;
702#define gen_op_string_jnz_sub(nz, ot, tb) gen_op_string_jnz_sub2[nz][ot]()
703#else
704typedef GenOpFunc1 GenOpFuncTB2;
705#define gen_op_string_jnz_sub(nz, ot, tb) gen_op_string_jnz_sub2[nz][ot](tb)
706#endif
707
708static GenOpFuncTB2 *gen_op_string_jnz_sub2[2][3] = {
2c0262af
FB		 709 {
710 gen_op_string_jnz_subb,
711 gen_op_string_jnz_subw,
712 gen_op_string_jnz_subl,
713 },
714 {
715 gen_op_string_jz_subb,
716 gen_op_string_jz_subw,
717 gen_op_string_jz_subl,
718 },
719};
720
721static GenOpFunc1 *gen_op_string_jnz_sub_im[2][3] = {
722 {
723 gen_op_string_jnz_subb_im,
724 gen_op_string_jnz_subw_im,
725 gen_op_string_jnz_subl_im,
726 },
727 {
728 gen_op_string_jz_subb_im,
729 gen_op_string_jz_subw_im,
730 gen_op_string_jz_subl_im,
731 },
732};
733
734static GenOpFunc *gen_op_in_DX_T0[3] = {
735 gen_op_inb_DX_T0,
736 gen_op_inw_DX_T0,
737 gen_op_inl_DX_T0,
738};
739
740static GenOpFunc *gen_op_out_DX_T0[3] = {
741 gen_op_outb_DX_T0,
742 gen_op_outw_DX_T0,
743 gen_op_outl_DX_T0,
744};
745
f115e911
FB		 746static GenOpFunc *gen_op_in[3] = {
747 gen_op_inb_T0_T1,
748 gen_op_inw_T0_T1,
749 gen_op_inl_T0_T1,
750};
751
752static GenOpFunc *gen_op_out[3] = {
753 gen_op_outb_T0_T1,
754 gen_op_outw_T0_T1,
755 gen_op_outl_T0_T1,
756};
757
758static GenOpFunc *gen_check_io_T0[3] = {
759 gen_op_check_iob_T0,
760 gen_op_check_iow_T0,
761 gen_op_check_iol_T0,
762};
763
764static GenOpFunc *gen_check_io_DX[3] = {
765 gen_op_check_iob_DX,
766 gen_op_check_iow_DX,
767 gen_op_check_iol_DX,
768};
769
770static void gen_check_io(DisasContext *s, int ot, int use_dx, int cur_eip)
771{
772 if (s->pe && (s->cpl > s->iopl || s->vm86)) {
773 if (s->cc_op != CC_OP_DYNAMIC)
774 gen_op_set_cc_op(s->cc_op);
775 gen_op_jmp_im(cur_eip);
776 if (use_dx)
777 gen_check_io_DX[ot]();
778 else
779 gen_check_io_T0[ot]();
780 }
781}
782
2c0262af
FB		 783static inline void gen_movs(DisasContext *s, int ot)
784{
785 gen_string_movl_A0_ESI(s);
786 gen_op_ld_T0_A0[ot + s->mem_index]();
787 gen_string_movl_A0_EDI(s);
788 gen_op_st_T0_A0[ot + s->mem_index]();
789 gen_op_movl_T0_Dshift[ot]();
790 if (s->aflag) {
791 gen_op_addl_ESI_T0();
792 gen_op_addl_EDI_T0();
793 } else {
794 gen_op_addw_ESI_T0();
795 gen_op_addw_EDI_T0();
796 }
797}
798
799static inline void gen_update_cc_op(DisasContext *s)
800{
801 if (s->cc_op != CC_OP_DYNAMIC) {
802 gen_op_set_cc_op(s->cc_op);
803 s->cc_op = CC_OP_DYNAMIC;
804 }
805}
806
807static inline void gen_jz_ecx_string(DisasContext *s, unsigned int next_eip)
808{
809 if (s->jmp_opt) {
810 gen_op_jz_ecx[s->aflag]((long)s->tb, next_eip);
811 } else {
812 /* XXX: does not work with gdbstub "ice" single step - not a
813 serious problem */
814 gen_op_jz_ecx_im[s->aflag](next_eip);
815 }
816}
817
818static inline void gen_stos(DisasContext *s, int ot)
819{
820 gen_op_mov_TN_reg[OT_LONG][0][R_EAX]();
821 gen_string_movl_A0_EDI(s);
822 gen_op_st_T0_A0[ot + s->mem_index]();
823 gen_op_movl_T0_Dshift[ot]();
824 if (s->aflag) {
825 gen_op_addl_EDI_T0();
826 } else {
827 gen_op_addw_EDI_T0();
828 }
829}
830
831static inline void gen_lods(DisasContext *s, int ot)
832{
833 gen_string_movl_A0_ESI(s);
834 gen_op_ld_T0_A0[ot + s->mem_index]();
835 gen_op_mov_reg_T0[ot][R_EAX]();
836 gen_op_movl_T0_Dshift[ot]();
837 if (s->aflag) {
838 gen_op_addl_ESI_T0();
839 } else {
840 gen_op_addw_ESI_T0();
841 }
842}
843
844static inline void gen_scas(DisasContext *s, int ot)
845{
846 gen_op_mov_TN_reg[OT_LONG][0][R_EAX]();
847 gen_string_movl_A0_EDI(s);
848 gen_op_ld_T1_A0[ot + s->mem_index]();
849 gen_op_cmpl_T0_T1_cc();
850 gen_op_movl_T0_Dshift[ot]();
851 if (s->aflag) {
852 gen_op_addl_EDI_T0();
853 } else {
854 gen_op_addw_EDI_T0();
855 }
856}
857
858static inline void gen_cmps(DisasContext *s, int ot)
859{
860 gen_string_movl_A0_ESI(s);
861 gen_op_ld_T0_A0[ot + s->mem_index]();
862 gen_string_movl_A0_EDI(s);
863 gen_op_ld_T1_A0[ot + s->mem_index]();
864 gen_op_cmpl_T0_T1_cc();
865 gen_op_movl_T0_Dshift[ot]();
866 if (s->aflag) {
867 gen_op_addl_ESI_T0();
868 gen_op_addl_EDI_T0();
869 } else {
870 gen_op_addw_ESI_T0();
871 gen_op_addw_EDI_T0();
872 }
873}
874
875static inline void gen_ins(DisasContext *s, int ot)
876{
877 gen_op_in_DX_T0[ot]();
878 gen_string_movl_A0_EDI(s);
879 gen_op_st_T0_A0[ot + s->mem_index]();
880 gen_op_movl_T0_Dshift[ot]();
881 if (s->aflag) {
882 gen_op_addl_EDI_T0();
883 } else {
884 gen_op_addw_EDI_T0();
885 }
886}
887
888static inline void gen_outs(DisasContext *s, int ot)
889{
890 gen_string_movl_A0_ESI(s);
891 gen_op_ld_T0_A0[ot + s->mem_index]();
892 gen_op_out_DX_T0[ot]();
893 gen_op_movl_T0_Dshift[ot]();
894 if (s->aflag) {
895 gen_op_addl_ESI_T0();
896 } else {
897 gen_op_addw_ESI_T0();
898 }
899}
900
901/* same method as Valgrind : we generate jumps to current or next
902 instruction */
903#define GEN_REPZ(op) \
904static inline void gen_repz_ ## op(DisasContext *s, int ot, \
905 unsigned int cur_eip, unsigned int next_eip) \
906{ \
907 gen_update_cc_op(s); \
908 gen_jz_ecx_string(s, next_eip); \
909 gen_ ## op(s, ot); \
910 gen_op_dec_ECX[s->aflag](); \
911 /* a loop would cause two single step exceptions if ECX = 1 \
912 before rep string_insn */ \
913 if (!s->jmp_opt) \
914 gen_op_jz_ecx_im[s->aflag](next_eip); \
915 gen_jmp(s, cur_eip); \
916}
917
918#define GEN_REPZ2(op) \
919static inline void gen_repz_ ## op(DisasContext *s, int ot, \
920 unsigned int cur_eip, \
921 unsigned int next_eip, \
922 int nz) \
923{ \
924 gen_update_cc_op(s); \
925 gen_jz_ecx_string(s, next_eip); \
926 gen_ ## op(s, ot); \
927 gen_op_dec_ECX[s->aflag](); \
928 gen_op_set_cc_op(CC_OP_SUBB + ot); \
929 if (!s->jmp_opt) \
930 gen_op_string_jnz_sub_im[nz][ot](next_eip); \
931 else \
7399c5a9 932 gen_op_string_jnz_sub(nz, ot, (long)s->tb); \
2c0262af
FB		 933 if (!s->jmp_opt) \
934 gen_op_jz_ecx_im[s->aflag](next_eip); \
935 gen_jmp(s, cur_eip); \
936}
937
938GEN_REPZ(movs)
939GEN_REPZ(stos)
940GEN_REPZ(lods)
941GEN_REPZ(ins)
942GEN_REPZ(outs)
943GEN_REPZ2(scas)
944GEN_REPZ2(cmps)
945
2c0262af
FB		 946enum {
947 JCC_O,
948 JCC_B,
949 JCC_Z,
950 JCC_BE,
951 JCC_S,
952 JCC_P,
953 JCC_L,
954 JCC_LE,
955};
956
957static GenOpFunc3 *gen_jcc_sub[3][8] = {
958 [OT_BYTE] = {
959 NULL,
960 gen_op_jb_subb,
961 gen_op_jz_subb,
962 gen_op_jbe_subb,
963 gen_op_js_subb,
964 NULL,
965 gen_op_jl_subb,
966 gen_op_jle_subb,
967 },
968 [OT_WORD] = {
969 NULL,
970 gen_op_jb_subw,
971 gen_op_jz_subw,
972 gen_op_jbe_subw,
973 gen_op_js_subw,
974 NULL,
975 gen_op_jl_subw,
976 gen_op_jle_subw,
977 },
978 [OT_LONG] = {
979 NULL,
980 gen_op_jb_subl,
981 gen_op_jz_subl,
982 gen_op_jbe_subl,
983 gen_op_js_subl,
984 NULL,
985 gen_op_jl_subl,
986 gen_op_jle_subl,
987 },
988};
989static GenOpFunc2 *gen_op_loop[2][4] = {
990 [0] = {
991 gen_op_loopnzw,
992 gen_op_loopzw,
993 gen_op_loopw,
994 gen_op_jecxzw,
995 },
996 [1] = {
997 gen_op_loopnzl,
998 gen_op_loopzl,
999 gen_op_loopl,
1000 gen_op_jecxzl,
1001 },
1002};
1003
1004static GenOpFunc *gen_setcc_slow[8] = {
1005 gen_op_seto_T0_cc,
1006 gen_op_setb_T0_cc,
1007 gen_op_setz_T0_cc,
1008 gen_op_setbe_T0_cc,
1009 gen_op_sets_T0_cc,
1010 gen_op_setp_T0_cc,
1011 gen_op_setl_T0_cc,
1012 gen_op_setle_T0_cc,
1013};
1014
1015static GenOpFunc *gen_setcc_sub[3][8] = {
1016 [OT_BYTE] = {
1017 NULL,
1018 gen_op_setb_T0_subb,
1019 gen_op_setz_T0_subb,
1020 gen_op_setbe_T0_subb,
1021 gen_op_sets_T0_subb,
1022 NULL,
1023 gen_op_setl_T0_subb,
1024 gen_op_setle_T0_subb,
1025 },
1026 [OT_WORD] = {
1027 NULL,
1028 gen_op_setb_T0_subw,
1029 gen_op_setz_T0_subw,
1030 gen_op_setbe_T0_subw,
1031 gen_op_sets_T0_subw,
1032 NULL,
1033 gen_op_setl_T0_subw,
1034 gen_op_setle_T0_subw,
1035 },
1036 [OT_LONG] = {
1037 NULL,
1038 gen_op_setb_T0_subl,
1039 gen_op_setz_T0_subl,
1040 gen_op_setbe_T0_subl,
1041 gen_op_sets_T0_subl,
1042 NULL,
1043 gen_op_setl_T0_subl,
1044 gen_op_setle_T0_subl,
1045 },
1046};
1047
1048static GenOpFunc *gen_op_fp_arith_ST0_FT0[8] = {
1049 gen_op_fadd_ST0_FT0,
1050 gen_op_fmul_ST0_FT0,
1051 gen_op_fcom_ST0_FT0,
1052 gen_op_fcom_ST0_FT0,
1053 gen_op_fsub_ST0_FT0,
1054 gen_op_fsubr_ST0_FT0,
1055 gen_op_fdiv_ST0_FT0,
1056 gen_op_fdivr_ST0_FT0,
1057};
1058
1059/* NOTE the exception in "r" op ordering */
1060static GenOpFunc1 *gen_op_fp_arith_STN_ST0[8] = {
1061 gen_op_fadd_STN_ST0,
1062 gen_op_fmul_STN_ST0,
1063 NULL,
1064 NULL,
1065 gen_op_fsubr_STN_ST0,
1066 gen_op_fsub_STN_ST0,
1067 gen_op_fdivr_STN_ST0,
1068 gen_op_fdiv_STN_ST0,
1069};
1070
1071/* if d == OR_TMP0, it means memory operand (address in A0) */
1072static void gen_op(DisasContext *s1, int op, int ot, int d)
1073{
1074 GenOpFunc *gen_update_cc;
1075
1076 if (d != OR_TMP0) {
1077 gen_op_mov_TN_reg[ot][0][d]();
1078 } else {
1079 gen_op_ld_T0_A0[ot + s1->mem_index]();
1080 }
1081 switch(op) {
1082 case OP_ADCL:
1083 case OP_SBBL:
1084 if (s1->cc_op != CC_OP_DYNAMIC)
1085 gen_op_set_cc_op(s1->cc_op);
1086 if (d != OR_TMP0) {
1087 gen_op_arithc_T0_T1_cc[ot][op - OP_ADCL]();
1088 gen_op_mov_reg_T0[ot][d]();
1089 } else {
4f31916f 1090 gen_op_arithc_mem_T0_T1_cc[ot + s1->mem_index][op - OP_ADCL]();
2c0262af
FB		 1091 }
1092 s1->cc_op = CC_OP_DYNAMIC;
1093 goto the_end;
1094 case OP_ADDL:
1095 gen_op_addl_T0_T1();
1096 s1->cc_op = CC_OP_ADDB + ot;
1097 gen_update_cc = gen_op_update2_cc;
1098 break;
1099 case OP_SUBL:
1100 gen_op_subl_T0_T1();
1101 s1->cc_op = CC_OP_SUBB + ot;
1102 gen_update_cc = gen_op_update2_cc;
1103 break;
1104 default:
1105 case OP_ANDL:
1106 case OP_ORL:
1107 case OP_XORL:
1108 gen_op_arith_T0_T1_cc[op]();
1109 s1->cc_op = CC_OP_LOGICB + ot;
1110 gen_update_cc = gen_op_update1_cc;
1111 break;
1112 case OP_CMPL:
1113 gen_op_cmpl_T0_T1_cc();
1114 s1->cc_op = CC_OP_SUBB + ot;
1115 gen_update_cc = NULL;
1116 break;
1117 }
1118 if (op != OP_CMPL) {
1119 if (d != OR_TMP0)
1120 gen_op_mov_reg_T0[ot][d]();
1121 else
1122 gen_op_st_T0_A0[ot + s1->mem_index]();
1123 }
1124 /* the flags update must happen after the memory write (precise
1125 exception support) */
1126 if (gen_update_cc)
1127 gen_update_cc();
1128 the_end: ;
1129}
1130
1131/* if d == OR_TMP0, it means memory operand (address in A0) */
1132static void gen_inc(DisasContext *s1, int ot, int d, int c)
1133{
1134 if (d != OR_TMP0)
1135 gen_op_mov_TN_reg[ot][0][d]();
1136 else
1137 gen_op_ld_T0_A0[ot + s1->mem_index]();
1138 if (s1->cc_op != CC_OP_DYNAMIC)
1139 gen_op_set_cc_op(s1->cc_op);
1140 if (c > 0) {
1141 gen_op_incl_T0();
1142 s1->cc_op = CC_OP_INCB + ot;
1143 } else {
1144 gen_op_decl_T0();
1145 s1->cc_op = CC_OP_DECB + ot;
1146 }
1147 if (d != OR_TMP0)
1148 gen_op_mov_reg_T0[ot][d]();
1149 else
1150 gen_op_st_T0_A0[ot + s1->mem_index]();
1151 gen_op_update_inc_cc();
1152}
1153
1154static void gen_shift(DisasContext *s1, int op, int ot, int d, int s)
1155{
1156 if (d != OR_TMP0)
1157 gen_op_mov_TN_reg[ot][0][d]();
1158 else
1159 gen_op_ld_T0_A0[ot + s1->mem_index]();
1160 if (s != OR_TMP1)
1161 gen_op_mov_TN_reg[ot][1][s]();
1162 /* for zero counts, flags are not updated, so must do it dynamically */
1163 if (s1->cc_op != CC_OP_DYNAMIC)
1164 gen_op_set_cc_op(s1->cc_op);
1165
1166 if (d != OR_TMP0)
1167 gen_op_shift_T0_T1_cc[ot][op]();
1168 else
4f31916f 1169 gen_op_shift_mem_T0_T1_cc[ot + s1->mem_index][op]();
2c0262af
FB		 1170 if (d != OR_TMP0)
1171 gen_op_mov_reg_T0[ot][d]();
1172 s1->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
1173}
1174
1175static void gen_shifti(DisasContext *s1, int op, int ot, int d, int c)
1176{
1177 /* currently not optimized */
1178 gen_op_movl_T1_im(c);
1179 gen_shift(s1, op, ot, d, OR_TMP1);
1180}
1181
1182static void gen_lea_modrm(DisasContext *s, int modrm, int *reg_ptr, int *offset_ptr)
1183{
1184 int havesib;
1185 int base, disp;
1186 int index;
1187 int scale;
1188 int opreg;
1189 int mod, rm, code, override, must_add_seg;
1190
1191 override = s->override;
1192 must_add_seg = s->addseg;
1193 if (override >= 0)
1194 must_add_seg = 1;
1195 mod = (modrm >> 6) & 3;
1196 rm = modrm & 7;
1197
1198 if (s->aflag) {
1199
1200 havesib = 0;
1201 base = rm;
1202 index = 0;
1203 scale = 0;
1204
1205 if (base == 4) {
1206 havesib = 1;
61382a50 1207 code = ldub_code(s->pc++);
2c0262af
FB		 1208 scale = (code >> 6) & 3;
1209 index = (code >> 3) & 7;
1210 base = code & 7;
1211 }
1212
1213 switch (mod) {
1214 case 0:
1215 if (base == 5) {
1216 base = -1;
61382a50 1217 disp = ldl_code(s->pc);
2c0262af
FB		 1218 s->pc += 4;
1219 } else {
1220 disp = 0;
1221 }
1222 break;
1223 case 1:
61382a50 1224 disp = (int8_t)ldub_code(s->pc++);
2c0262af
FB		 1225 break;
1226 default:
1227 case 2:
61382a50 1228 disp = ldl_code(s->pc);
2c0262af
FB		 1229 s->pc += 4;
1230 break;
1231 }
1232
1233 if (base >= 0) {
1234 /* for correct popl handling with esp */
1235 if (base == 4 && s->popl_esp_hack)
1236 disp += s->popl_esp_hack;
1237 gen_op_movl_A0_reg[base]();
1238 if (disp != 0)
1239 gen_op_addl_A0_im(disp);
1240 } else {
1241 gen_op_movl_A0_im(disp);
1242 }
1243 /* XXX: index == 4 is always invalid */
1244 if (havesib && (index != 4 || scale != 0)) {
1245 gen_op_addl_A0_reg_sN[scale][index]();
1246 }
1247 if (must_add_seg) {
1248 if (override < 0) {
1249 if (base == R_EBP || base == R_ESP)
1250 override = R_SS;
1251 else
1252 override = R_DS;
1253 }
1254 gen_op_addl_A0_seg(offsetof(CPUX86State,segs[override].base));
1255 }
1256 } else {
1257 switch (mod) {
1258 case 0:
1259 if (rm == 6) {
61382a50 1260 disp = lduw_code(s->pc);
2c0262af
FB		 1261 s->pc += 2;
1262 gen_op_movl_A0_im(disp);
1263 rm = 0; /* avoid SS override */
1264 goto no_rm;
1265 } else {
1266 disp = 0;
1267 }
1268 break;
1269 case 1:
61382a50 1270 disp = (int8_t)ldub_code(s->pc++);
2c0262af
FB		 1271 break;
1272 default:
1273 case 2:
61382a50 1274 disp = lduw_code(s->pc);
2c0262af
FB		 1275 s->pc += 2;
1276 break;
1277 }
1278 switch(rm) {
1279 case 0:
1280 gen_op_movl_A0_reg[R_EBX]();
1281 gen_op_addl_A0_reg_sN[0][R_ESI]();
1282 break;
1283 case 1:
1284 gen_op_movl_A0_reg[R_EBX]();
1285 gen_op_addl_A0_reg_sN[0][R_EDI]();
1286 break;
1287 case 2:
1288 gen_op_movl_A0_reg[R_EBP]();
1289 gen_op_addl_A0_reg_sN[0][R_ESI]();
1290 break;
1291 case 3:
1292 gen_op_movl_A0_reg[R_EBP]();
1293 gen_op_addl_A0_reg_sN[0][R_EDI]();
1294 break;
1295 case 4:
1296 gen_op_movl_A0_reg[R_ESI]();
1297 break;
1298 case 5:
1299 gen_op_movl_A0_reg[R_EDI]();
1300 break;
1301 case 6:
1302 gen_op_movl_A0_reg[R_EBP]();
1303 break;
1304 default:
1305 case 7:
1306 gen_op_movl_A0_reg[R_EBX]();
1307 break;
1308 }
1309 if (disp != 0)
1310 gen_op_addl_A0_im(disp);
1311 gen_op_andl_A0_ffff();
1312 no_rm:
1313 if (must_add_seg) {
1314 if (override < 0) {
1315 if (rm == 2 || rm == 3 || rm == 6)
1316 override = R_SS;
1317 else
1318 override = R_DS;
1319 }
1320 gen_op_addl_A0_seg(offsetof(CPUX86State,segs[override].base));
1321 }
1322 }
1323
1324 opreg = OR_A0;
1325 disp = 0;
1326 *reg_ptr = opreg;
1327 *offset_ptr = disp;
1328}
1329
1330/* generate modrm memory load or store of 'reg'. TMP0 is used if reg !=
1331 OR_TMP0 */
1332static void gen_ldst_modrm(DisasContext *s, int modrm, int ot, int reg, int is_store)
1333{
1334 int mod, rm, opreg, disp;
1335
1336 mod = (modrm >> 6) & 3;
1337 rm = modrm & 7;
1338 if (mod == 3) {
1339 if (is_store) {
1340 if (reg != OR_TMP0)
1341 gen_op_mov_TN_reg[ot][0][reg]();
1342 gen_op_mov_reg_T0[ot][rm]();
1343 } else {
1344 gen_op_mov_TN_reg[ot][0][rm]();
1345 if (reg != OR_TMP0)
1346 gen_op_mov_reg_T0[ot][reg]();
1347 }
1348 } else {
1349 gen_lea_modrm(s, modrm, &opreg, &disp);
1350 if (is_store) {
1351 if (reg != OR_TMP0)
1352 gen_op_mov_TN_reg[ot][0][reg]();
1353 gen_op_st_T0_A0[ot + s->mem_index]();
1354 } else {
1355 gen_op_ld_T0_A0[ot + s->mem_index]();
1356 if (reg != OR_TMP0)
1357 gen_op_mov_reg_T0[ot][reg]();
1358 }
1359 }
1360}
1361
1362static inline uint32_t insn_get(DisasContext *s, int ot)
1363{
1364 uint32_t ret;
1365
1366 switch(ot) {
1367 case OT_BYTE:
61382a50 1368 ret = ldub_code(s->pc);
2c0262af
FB		 1369 s->pc++;
1370 break;
1371 case OT_WORD:
61382a50 1372 ret = lduw_code(s->pc);
2c0262af
FB		 1373 s->pc += 2;
1374 break;
1375 default:
1376 case OT_LONG:
61382a50 1377 ret = ldl_code(s->pc);
2c0262af
FB		 1378 s->pc += 4;
1379 break;
1380 }
1381 return ret;
1382}
1383
1384static inline void gen_jcc(DisasContext *s, int b, int val, int next_eip)
1385{
1386 TranslationBlock *tb;
1387 int inv, jcc_op;
1388 GenOpFunc3 *func;
1389
1390 inv = b & 1;
1391 jcc_op = (b >> 1) & 7;
1392
1393 if (s->jmp_opt) {
1394 switch(s->cc_op) {
1395 /* we optimize the cmp/jcc case */
1396 case CC_OP_SUBB:
1397 case CC_OP_SUBW:
1398 case CC_OP_SUBL:
1399 func = gen_jcc_sub[s->cc_op - CC_OP_SUBB][jcc_op];
1400 break;
1401
1402 /* some jumps are easy to compute */
1403 case CC_OP_ADDB:
1404 case CC_OP_ADDW:
1405 case CC_OP_ADDL:
1406 case CC_OP_ADCB:
1407 case CC_OP_ADCW:
1408 case CC_OP_ADCL:
1409 case CC_OP_SBBB:
1410 case CC_OP_SBBW:
1411 case CC_OP_SBBL:
1412 case CC_OP_LOGICB:
1413 case CC_OP_LOGICW:
1414 case CC_OP_LOGICL:
1415 case CC_OP_INCB:
1416 case CC_OP_INCW:
1417 case CC_OP_INCL:
1418 case CC_OP_DECB:
1419 case CC_OP_DECW:
1420 case CC_OP_DECL:
1421 case CC_OP_SHLB:
1422 case CC_OP_SHLW:
1423 case CC_OP_SHLL:
1424 case CC_OP_SARB:
1425 case CC_OP_SARW:
1426 case CC_OP_SARL:
1427 switch(jcc_op) {
1428 case JCC_Z:
1429 func = gen_jcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
1430 break;
1431 case JCC_S:
1432 func = gen_jcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
1433 break;
1434 default:
1435 func = NULL;
1436 break;
1437 }
1438 break;
1439 default:
1440 func = NULL;
1441 break;
1442 }
1443
1444 if (s->cc_op != CC_OP_DYNAMIC)
1445 gen_op_set_cc_op(s->cc_op);
1446
1447 if (!func) {
1448 gen_setcc_slow[jcc_op]();
1449 func = gen_op_jcc;
1450 }
1451
1452 tb = s->tb;
1453 if (!inv) {
1454 func((long)tb, val, next_eip);
1455 } else {
1456 func((long)tb, next_eip, val);
1457 }
1458 s->is_jmp = 3;
1459 } else {
1460 if (s->cc_op != CC_OP_DYNAMIC) {
1461 gen_op_set_cc_op(s->cc_op);
1462 s->cc_op = CC_OP_DYNAMIC;
1463 }
1464 gen_setcc_slow[jcc_op]();
1465 if (!inv) {
1466 gen_op_jcc_im(val, next_eip);
1467 } else {
1468 gen_op_jcc_im(next_eip, val);
1469 }
1470 gen_eob(s);
1471 }
1472}
1473
1474static void gen_setcc(DisasContext *s, int b)
1475{
1476 int inv, jcc_op;
1477 GenOpFunc *func;
1478
1479 inv = b & 1;
1480 jcc_op = (b >> 1) & 7;
1481 switch(s->cc_op) {
1482 /* we optimize the cmp/jcc case */
1483 case CC_OP_SUBB:
1484 case CC_OP_SUBW:
1485 case CC_OP_SUBL:
1486 func = gen_setcc_sub[s->cc_op - CC_OP_SUBB][jcc_op];
1487 if (!func)
1488 goto slow_jcc;
1489 break;
1490
1491 /* some jumps are easy to compute */
1492 case CC_OP_ADDB:
1493 case CC_OP_ADDW:
1494 case CC_OP_ADDL:
1495 case CC_OP_LOGICB:
1496 case CC_OP_LOGICW:
1497 case CC_OP_LOGICL:
1498 case CC_OP_INCB:
1499 case CC_OP_INCW:
1500 case CC_OP_INCL:
1501 case CC_OP_DECB:
1502 case CC_OP_DECW:
1503 case CC_OP_DECL:
1504 case CC_OP_SHLB:
1505 case CC_OP_SHLW:
1506 case CC_OP_SHLL:
1507 switch(jcc_op) {
1508 case JCC_Z:
1509 func = gen_setcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
1510 break;
1511 case JCC_S:
1512 func = gen_setcc_sub[(s->cc_op - CC_OP_ADDB) % 3][jcc_op];
1513 break;
1514 default:
1515 goto slow_jcc;
1516 }
1517 break;
1518 default:
1519 slow_jcc:
1520 if (s->cc_op != CC_OP_DYNAMIC)
1521 gen_op_set_cc_op(s->cc_op);
1522 func = gen_setcc_slow[jcc_op];
1523 break;
1524 }
1525 func();
1526 if (inv) {
1527 gen_op_xor_T0_1();
1528 }
1529}
1530
1531/* move T0 to seg_reg and compute if the CPU state may change. Never
1532 call this function with seg_reg == R_CS */
1533static void gen_movl_seg_T0(DisasContext *s, int seg_reg, unsigned int cur_eip)
1534{
3415a4dd
FB		 1535 if (s->pe && !s->vm86) {
1536 /* XXX: optimize by finding processor state dynamically */
1537 if (s->cc_op != CC_OP_DYNAMIC)
1538 gen_op_set_cc_op(s->cc_op);
1539 gen_op_jmp_im(cur_eip);
1540 gen_op_movl_seg_T0(seg_reg);
1541 } else {
2c0262af 1542 gen_op_movl_seg_T0_vm(offsetof(CPUX86State,segs[seg_reg]));
3415a4dd 1543 }
2c0262af
FB		 1544 /* abort translation because the register may have a non zero base
1545 or because ss32 may change. For R_SS, translation must always
1546 stop as a special handling must be done to disable hardware
1547 interrupts for the next instruction */
1548 if (seg_reg == R_SS || (!s->addseg && seg_reg < R_FS))
1549 s->is_jmp = 3;
1550}
1551
4f31916f
FB		 1552static inline void gen_stack_update(DisasContext *s, int addend)
1553{
1554 if (s->ss32) {
1555 if (addend == 2)
1556 gen_op_addl_ESP_2();
1557 else if (addend == 4)
1558 gen_op_addl_ESP_4();
1559 else
1560 gen_op_addl_ESP_im(addend);
1561 } else {
1562 if (addend == 2)
1563 gen_op_addw_ESP_2();
1564 else if (addend == 4)
1565 gen_op_addw_ESP_4();
1566 else
1567 gen_op_addw_ESP_im(addend);
1568 }
1569}
1570
2c0262af
FB		 1571/* generate a push. It depends on ss32, addseg and dflag */
1572static void gen_push_T0(DisasContext *s)
1573{
4f31916f
FB		 1574 gen_op_movl_A0_reg[R_ESP]();
1575 if (!s->dflag)
1576 gen_op_subl_A0_2();
1577 else
1578 gen_op_subl_A0_4();
2c0262af 1579 if (s->ss32) {
4f31916f
FB		 1580 if (s->addseg) {
1581 gen_op_movl_T1_A0();
1582 gen_op_addl_A0_SS();
2c0262af
FB		 1583 }
1584 } else {
4f31916f
FB		 1585 gen_op_andl_A0_ffff();
1586 gen_op_movl_T1_A0();
1587 gen_op_addl_A0_SS();
2c0262af 1588 }
4f31916f
FB		 1589 gen_op_st_T0_A0[s->dflag + 1 + s->mem_index]();
1590 if (s->ss32 && !s->addseg)
1591 gen_op_movl_ESP_A0();
1592 else
1593 gen_op_mov_reg_T1[s->ss32 + 1][R_ESP]();
2c0262af
FB		 1594}
1595
4f31916f
FB		 1596/* generate a push. It depends on ss32, addseg and dflag */
1597/* slower version for T1, only used for call Ev */
1598static void gen_push_T1(DisasContext *s)
2c0262af 1599{
4f31916f
FB		 1600 gen_op_movl_A0_reg[R_ESP]();
1601 if (!s->dflag)
1602 gen_op_subl_A0_2();
1603 else
1604 gen_op_subl_A0_4();
2c0262af 1605 if (s->ss32) {
4f31916f
FB		 1606 if (s->addseg) {
1607 gen_op_addl_A0_SS();
2c0262af
FB		 1608 }
1609 } else {
4f31916f
FB		 1610 gen_op_andl_A0_ffff();
1611 gen_op_addl_A0_SS();
2c0262af 1612 }
4f31916f
FB		 1613 gen_op_st_T1_A0[s->dflag + 1 + s->mem_index]();
1614
1615 if (s->ss32 && !s->addseg)
1616 gen_op_movl_ESP_A0();
1617 else
1618 gen_stack_update(s, (-2) << s->dflag);
2c0262af
FB		 1619}
1620
4f31916f
FB		 1621/* two step pop is necessary for precise exceptions */
1622static void gen_pop_T0(DisasContext *s)
2c0262af 1623{
4f31916f 1624 gen_op_movl_A0_reg[R_ESP]();
2c0262af 1625 if (s->ss32) {
4f31916f
FB		 1626 if (s->addseg)
1627 gen_op_addl_A0_SS();
2c0262af 1628 } else {
4f31916f
FB		 1629 gen_op_andl_A0_ffff();
1630 gen_op_addl_A0_SS();
2c0262af 1631 }
4f31916f 1632 gen_op_ld_T0_A0[s->dflag + 1 + s->mem_index]();
2c0262af
FB		 1633}
1634
1635static void gen_pop_update(DisasContext *s)
1636{
1637 gen_stack_update(s, 2 << s->dflag);
1638}
1639
1640static void gen_stack_A0(DisasContext *s)
1641{
1642 gen_op_movl_A0_ESP();
1643 if (!s->ss32)
1644 gen_op_andl_A0_ffff();
1645 gen_op_movl_T1_A0();
1646 if (s->addseg)
1647 gen_op_addl_A0_seg(offsetof(CPUX86State,segs[R_SS].base));
1648}
1649
1650/* NOTE: wrap around in 16 bit not fully handled */
1651static void gen_pusha(DisasContext *s)
1652{
1653 int i;
1654 gen_op_movl_A0_ESP();
1655 gen_op_addl_A0_im(-16 << s->dflag);
1656 if (!s->ss32)
1657 gen_op_andl_A0_ffff();
1658 gen_op_movl_T1_A0();
1659 if (s->addseg)
1660 gen_op_addl_A0_seg(offsetof(CPUX86State,segs[R_SS].base));
1661 for(i = 0;i < 8; i++) {
1662 gen_op_mov_TN_reg[OT_LONG][0][7 - i]();
1663 gen_op_st_T0_A0[OT_WORD + s->dflag + s->mem_index]();
1664 gen_op_addl_A0_im(2 << s->dflag);
1665 }
1666 gen_op_mov_reg_T1[OT_WORD + s->dflag][R_ESP]();
1667}
1668
1669/* NOTE: wrap around in 16 bit not fully handled */
1670static void gen_popa(DisasContext *s)
1671{
1672 int i;
1673 gen_op_movl_A0_ESP();
1674 if (!s->ss32)
1675 gen_op_andl_A0_ffff();
1676 gen_op_movl_T1_A0();
1677 gen_op_addl_T1_im(16 << s->dflag);
1678 if (s->addseg)
1679 gen_op_addl_A0_seg(offsetof(CPUX86State,segs[R_SS].base));
1680 for(i = 0;i < 8; i++) {
1681 /* ESP is not reloaded */
1682 if (i != 3) {
1683 gen_op_ld_T0_A0[OT_WORD + s->dflag + s->mem_index]();
1684 gen_op_mov_reg_T0[OT_WORD + s->dflag][7 - i]();
1685 }
1686 gen_op_addl_A0_im(2 << s->dflag);
1687 }
1688 gen_op_mov_reg_T1[OT_WORD + s->dflag][R_ESP]();
1689}
1690
1691/* NOTE: wrap around in 16 bit not fully handled */
1692/* XXX: check this */
1693static void gen_enter(DisasContext *s, int esp_addend, int level)
1694{
1695 int ot, level1, addend, opsize;
1696
1697 ot = s->dflag + OT_WORD;
1698 level &= 0x1f;
1699 level1 = level;
1700 opsize = 2 << s->dflag;
1701
1702 gen_op_movl_A0_ESP();
1703 gen_op_addl_A0_im(-opsize);
1704 if (!s->ss32)
1705 gen_op_andl_A0_ffff();
1706 gen_op_movl_T1_A0();
1707 if (s->addseg)
1708 gen_op_addl_A0_seg(offsetof(CPUX86State,segs[R_SS].base));
1709 /* push bp */
1710 gen_op_mov_TN_reg[OT_LONG][0][R_EBP]();
1711 gen_op_st_T0_A0[ot + s->mem_index]();
1712 if (level) {
1713 while (level--) {
1714 gen_op_addl_A0_im(-opsize);
1715 gen_op_addl_T0_im(-opsize);
1716 gen_op_st_T0_A0[ot + s->mem_index]();
1717 }
1718 gen_op_addl_A0_im(-opsize);
4f31916f 1719 gen_op_st_T1_A0[ot + s->mem_index]();
2c0262af
FB		 1720 }
1721 gen_op_mov_reg_T1[ot][R_EBP]();
1722 addend = -esp_addend;
1723 if (level1)
1724 addend -= opsize * (level1 + 1);
1725 gen_op_addl_T1_im(addend);
1726 gen_op_mov_reg_T1[ot][R_ESP]();
1727}
1728
1729static void gen_exception(DisasContext *s, int trapno, unsigned int cur_eip)
1730{
1731 if (s->cc_op != CC_OP_DYNAMIC)
1732 gen_op_set_cc_op(s->cc_op);
1733 gen_op_jmp_im(cur_eip);
1734 gen_op_raise_exception(trapno);
1735 s->is_jmp = 3;
1736}
1737
1738/* an interrupt is different from an exception because of the
1739 priviledge checks */
1740static void gen_interrupt(DisasContext *s, int intno,
1741 unsigned int cur_eip, unsigned int next_eip)
1742{
1743 if (s->cc_op != CC_OP_DYNAMIC)
1744 gen_op_set_cc_op(s->cc_op);
1745 gen_op_jmp_im(cur_eip);
1746 gen_op_raise_interrupt(intno, next_eip);
1747 s->is_jmp = 3;
1748}
1749
1750static void gen_debug(DisasContext *s, unsigned int cur_eip)
1751{
1752 if (s->cc_op != CC_OP_DYNAMIC)
1753 gen_op_set_cc_op(s->cc_op);
1754 gen_op_jmp_im(cur_eip);
1755 gen_op_debug();
1756 s->is_jmp = 3;
1757}
1758
1759/* generate a generic end of block. Trace exception is also generated
1760 if needed */
1761static void gen_eob(DisasContext *s)
1762{
1763 if (s->cc_op != CC_OP_DYNAMIC)
1764 gen_op_set_cc_op(s->cc_op);
a2cc3b24
FB		 1765 if (s->tb->flags & HF_INHIBIT_IRQ_MASK) {
1766 gen_op_reset_inhibit_irq();
1767 }
34865134
FB		 1768 if (s->singlestep_enabled) {
1769 gen_op_debug();
1770 } else if (s->tf) {
2c0262af
FB		 1771 gen_op_raise_exception(EXCP01_SSTP);
1772 } else {
1773 gen_op_movl_T0_0();
1774 gen_op_exit_tb();
1775 }
1776 s->is_jmp = 3;
1777}
1778
1779/* generate a jump to eip. No segment change must happen before as a
1780 direct call to the next block may occur */
1781static void gen_jmp(DisasContext *s, unsigned int eip)
1782{
1783 TranslationBlock *tb = s->tb;
1784
1785 if (s->jmp_opt) {
1786 if (s->cc_op != CC_OP_DYNAMIC)
1787 gen_op_set_cc_op(s->cc_op);
1788 gen_op_jmp((long)tb, eip);
1789 s->is_jmp = 3;
1790 } else {
1791 gen_op_jmp_im(eip);
1792 gen_eob(s);
1793 }
1794}
1795
1796/* convert one instruction. s->is_jmp is set if the translation must
1797 be stopped. Return the next pc value */
1798static uint8_t *disas_insn(DisasContext *s, uint8_t *pc_start)
1799{
1800 int b, prefixes, aflag, dflag;
1801 int shift, ot;
1802 int modrm, reg, rm, mod, reg_addr, op, opreg, offset_addr, val;
1803 unsigned int next_eip;
1804
1805 s->pc = pc_start;
1806 prefixes = 0;
1807 aflag = s->code32;
1808 dflag = s->code32;
1809 s->override = -1;
1810 next_byte:
61382a50 1811 b = ldub_code(s->pc);
2c0262af
FB		 1812 s->pc++;
1813 /* check prefixes */
1814 switch (b) {
1815 case 0xf3:
1816 prefixes |= PREFIX_REPZ;
1817 goto next_byte;
1818 case 0xf2:
1819 prefixes |= PREFIX_REPNZ;
1820 goto next_byte;
1821 case 0xf0:
1822 prefixes |= PREFIX_LOCK;
1823 goto next_byte;
1824 case 0x2e:
1825 s->override = R_CS;
1826 goto next_byte;
1827 case 0x36:
1828 s->override = R_SS;
1829 goto next_byte;
1830 case 0x3e:
1831 s->override = R_DS;
1832 goto next_byte;
1833 case 0x26:
1834 s->override = R_ES;
1835 goto next_byte;
1836 case 0x64:
1837 s->override = R_FS;
1838 goto next_byte;
1839 case 0x65:
1840 s->override = R_GS;
1841 goto next_byte;
1842 case 0x66:
1843 prefixes |= PREFIX_DATA;
1844 goto next_byte;
1845 case 0x67:
1846 prefixes |= PREFIX_ADR;
1847 goto next_byte;
1848 }
1849
1850 if (prefixes & PREFIX_DATA)
1851 dflag ^= 1;
1852 if (prefixes & PREFIX_ADR)
1853 aflag ^= 1;
1854
1855 s->prefix = prefixes;
1856 s->aflag = aflag;
1857 s->dflag = dflag;
1858
1859 /* lock generation */
1860 if (prefixes & PREFIX_LOCK)
1861 gen_op_lock();
1862
1863 /* now check op code */
1864 reswitch:
1865 switch(b) {
1866 case 0x0f:
1867 /**************************/
1868 /* extended op code */
61382a50 1869 b = ldub_code(s->pc++) | 0x100;
2c0262af
FB		 1870 goto reswitch;
1871
1872 /**************************/
1873 /* arith & logic */
1874 case 0x00 ... 0x05:
1875 case 0x08 ... 0x0d:
1876 case 0x10 ... 0x15:
1877 case 0x18 ... 0x1d:
1878 case 0x20 ... 0x25:
1879 case 0x28 ... 0x2d:
1880 case 0x30 ... 0x35:
1881 case 0x38 ... 0x3d:
1882 {
1883 int op, f, val;
1884 op = (b >> 3) & 7;
1885 f = (b >> 1) & 3;
1886
1887 if ((b & 1) == 0)
1888 ot = OT_BYTE;
1889 else
1890 ot = dflag ? OT_LONG : OT_WORD;
1891
1892 switch(f) {
1893 case 0: /* OP Ev, Gv */
61382a50 1894 modrm = ldub_code(s->pc++);
2c0262af
FB		 1895 reg = ((modrm >> 3) & 7);
1896 mod = (modrm >> 6) & 3;
1897 rm = modrm & 7;
1898 if (mod != 3) {
1899 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
1900 opreg = OR_TMP0;
1901 } else if (op == OP_XORL && rm == reg) {
1902 xor_zero:
1903 /* xor reg, reg optimisation */
1904 gen_op_movl_T0_0();
1905 s->cc_op = CC_OP_LOGICB + ot;
1906 gen_op_mov_reg_T0[ot][reg]();
1907 gen_op_update1_cc();
1908 break;
1909 } else {
1910 opreg = rm;
1911 }
1912 gen_op_mov_TN_reg[ot][1][reg]();
1913 gen_op(s, op, ot, opreg);
1914 break;
1915 case 1: /* OP Gv, Ev */
61382a50 1916 modrm = ldub_code(s->pc++);
2c0262af
FB		 1917 mod = (modrm >> 6) & 3;
1918 reg = ((modrm >> 3) & 7);
1919 rm = modrm & 7;
1920 if (mod != 3) {
1921 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
1922 gen_op_ld_T1_A0[ot + s->mem_index]();
1923 } else if (op == OP_XORL && rm == reg) {
1924 goto xor_zero;
1925 } else {
1926 gen_op_mov_TN_reg[ot][1][rm]();
1927 }
1928 gen_op(s, op, ot, reg);
1929 break;
1930 case 2: /* OP A, Iv */
1931 val = insn_get(s, ot);
1932 gen_op_movl_T1_im(val);
1933 gen_op(s, op, ot, OR_EAX);
1934 break;
1935 }
1936 }
1937 break;
1938
1939 case 0x80: /* GRP1 */
1940 case 0x81:
d64477af 1941 case 0x82:
2c0262af
FB		 1942 case 0x83:
1943 {
1944 int val;
1945
1946 if ((b & 1) == 0)
1947 ot = OT_BYTE;
1948 else
1949 ot = dflag ? OT_LONG : OT_WORD;
1950
61382a50 1951 modrm = ldub_code(s->pc++);
2c0262af
FB		 1952 mod = (modrm >> 6) & 3;
1953 rm = modrm & 7;
1954 op = (modrm >> 3) & 7;
1955
1956 if (mod != 3) {
1957 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
1958 opreg = OR_TMP0;
1959 } else {
1960 opreg = rm + OR_EAX;
1961 }
1962
1963 switch(b) {
1964 default:
1965 case 0x80:
1966 case 0x81:
d64477af 1967 case 0x82:
2c0262af
FB		 1968 val = insn_get(s, ot);
1969 break;
1970 case 0x83:
1971 val = (int8_t)insn_get(s, OT_BYTE);
1972 break;
1973 }
1974 gen_op_movl_T1_im(val);
1975 gen_op(s, op, ot, opreg);
1976 }
1977 break;
1978
1979 /**************************/
1980 /* inc, dec, and other misc arith */
1981 case 0x40 ... 0x47: /* inc Gv */
1982 ot = dflag ? OT_LONG : OT_WORD;
1983 gen_inc(s, ot, OR_EAX + (b & 7), 1);
1984 break;
1985 case 0x48 ... 0x4f: /* dec Gv */
1986 ot = dflag ? OT_LONG : OT_WORD;
1987 gen_inc(s, ot, OR_EAX + (b & 7), -1);
1988 break;
1989 case 0xf6: /* GRP3 */
1990 case 0xf7:
1991 if ((b & 1) == 0)
1992 ot = OT_BYTE;
1993 else
1994 ot = dflag ? OT_LONG : OT_WORD;
1995
61382a50 1996 modrm = ldub_code(s->pc++);
2c0262af
FB		 1997 mod = (modrm >> 6) & 3;
1998 rm = modrm & 7;
1999 op = (modrm >> 3) & 7;
2000 if (mod != 3) {
2001 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2002 gen_op_ld_T0_A0[ot + s->mem_index]();
2003 } else {
2004 gen_op_mov_TN_reg[ot][0][rm]();
2005 }
2006
2007 switch(op) {
2008 case 0: /* test */
2009 val = insn_get(s, ot);
2010 gen_op_movl_T1_im(val);
2011 gen_op_testl_T0_T1_cc();
2012 s->cc_op = CC_OP_LOGICB + ot;
2013 break;
2014 case 2: /* not */
2015 gen_op_notl_T0();
2016 if (mod != 3) {
2017 gen_op_st_T0_A0[ot + s->mem_index]();
2018 } else {
2019 gen_op_mov_reg_T0[ot][rm]();
2020 }
2021 break;
2022 case 3: /* neg */
2023 gen_op_negl_T0();
2024 if (mod != 3) {
2025 gen_op_st_T0_A0[ot + s->mem_index]();
2026 } else {
2027 gen_op_mov_reg_T0[ot][rm]();
2028 }
2029 gen_op_update_neg_cc();
2030 s->cc_op = CC_OP_SUBB + ot;
2031 break;
2032 case 4: /* mul */
2033 switch(ot) {
2034 case OT_BYTE:
2035 gen_op_mulb_AL_T0();
d36cd60e 2036 s->cc_op = CC_OP_MULB;
2c0262af
FB		 2037 break;
2038 case OT_WORD:
2039 gen_op_mulw_AX_T0();
d36cd60e 2040 s->cc_op = CC_OP_MULW;
2c0262af
FB		 2041 break;
2042 default:
2043 case OT_LONG:
2044 gen_op_mull_EAX_T0();
d36cd60e 2045 s->cc_op = CC_OP_MULL;
2c0262af
FB		 2046 break;
2047 }
2c0262af
FB		 2048 break;
2049 case 5: /* imul */
2050 switch(ot) {
2051 case OT_BYTE:
2052 gen_op_imulb_AL_T0();
d36cd60e 2053 s->cc_op = CC_OP_MULB;
2c0262af
FB		 2054 break;
2055 case OT_WORD:
2056 gen_op_imulw_AX_T0();
d36cd60e 2057 s->cc_op = CC_OP_MULW;
2c0262af
FB		 2058 break;
2059 default:
2060 case OT_LONG:
2061 gen_op_imull_EAX_T0();
d36cd60e 2062 s->cc_op = CC_OP_MULL;
2c0262af
FB		 2063 break;
2064 }
2c0262af
FB		 2065 break;
2066 case 6: /* div */
2067 switch(ot) {
2068 case OT_BYTE:
2069 gen_op_divb_AL_T0(pc_start - s->cs_base);
2070 break;
2071 case OT_WORD:
2072 gen_op_divw_AX_T0(pc_start - s->cs_base);
2073 break;
2074 default:
2075 case OT_LONG:
2076 gen_op_divl_EAX_T0(pc_start - s->cs_base);
2077 break;
2078 }
2079 break;
2080 case 7: /* idiv */
2081 switch(ot) {
2082 case OT_BYTE:
2083 gen_op_idivb_AL_T0(pc_start - s->cs_base);
2084 break;
2085 case OT_WORD:
2086 gen_op_idivw_AX_T0(pc_start - s->cs_base);
2087 break;
2088 default:
2089 case OT_LONG:
2090 gen_op_idivl_EAX_T0(pc_start - s->cs_base);
2091 break;
2092 }
2093 break;
2094 default:
2095 goto illegal_op;
2096 }
2097 break;
2098
2099 case 0xfe: /* GRP4 */
2100 case 0xff: /* GRP5 */
2101 if ((b & 1) == 0)
2102 ot = OT_BYTE;
2103 else
2104 ot = dflag ? OT_LONG : OT_WORD;
2105
61382a50 2106 modrm = ldub_code(s->pc++);
2c0262af
FB		 2107 mod = (modrm >> 6) & 3;
2108 rm = modrm & 7;
2109 op = (modrm >> 3) & 7;
2110 if (op >= 2 && b == 0xfe) {
2111 goto illegal_op;
2112 }
2113 if (mod != 3) {
2114 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2115 if (op >= 2 && op != 3 && op != 5)
2116 gen_op_ld_T0_A0[ot + s->mem_index]();
2117 } else {
2118 gen_op_mov_TN_reg[ot][0][rm]();
2119 }
2120
2121 switch(op) {
2122 case 0: /* inc Ev */
2123 if (mod != 3)
2124 opreg = OR_TMP0;
2125 else
2126 opreg = rm;
2127 gen_inc(s, ot, opreg, 1);
2128 break;
2129 case 1: /* dec Ev */
2130 if (mod != 3)
2131 opreg = OR_TMP0;
2132 else
2133 opreg = rm;
2134 gen_inc(s, ot, opreg, -1);
2135 break;
2136 case 2: /* call Ev */
4f31916f 2137 /* XXX: optimize if memory (no 'and' is necessary) */
2c0262af
FB		 2138 if (s->dflag == 0)
2139 gen_op_andl_T0_ffff();
2c0262af 2140 next_eip = s->pc - s->cs_base;
4f31916f
FB		 2141 gen_op_movl_T1_im(next_eip);
2142 gen_push_T1(s);
2143 gen_op_jmp_T0();
2c0262af
FB		 2144 gen_eob(s);
2145 break;
61382a50 2146 case 3: /* lcall Ev */
2c0262af
FB		 2147 gen_op_ld_T1_A0[ot + s->mem_index]();
2148 gen_op_addl_A0_im(1 << (ot - OT_WORD + 1));
61382a50 2149 gen_op_ldu_T0_A0[OT_WORD + s->mem_index]();
2c0262af
FB		 2150 do_lcall:
2151 if (s->pe && !s->vm86) {
2152 if (s->cc_op != CC_OP_DYNAMIC)
2153 gen_op_set_cc_op(s->cc_op);
2154 gen_op_jmp_im(pc_start - s->cs_base);
2155 gen_op_lcall_protected_T0_T1(dflag, s->pc - s->cs_base);
2156 } else {
2157 gen_op_lcall_real_T0_T1(dflag, s->pc - s->cs_base);
2158 }
2159 gen_eob(s);
2160 break;
2161 case 4: /* jmp Ev */
2162 if (s->dflag == 0)
2163 gen_op_andl_T0_ffff();
2164 gen_op_jmp_T0();
2165 gen_eob(s);
2166 break;
2167 case 5: /* ljmp Ev */
2168 gen_op_ld_T1_A0[ot + s->mem_index]();
2169 gen_op_addl_A0_im(1 << (ot - OT_WORD + 1));
61382a50 2170 gen_op_ldu_T0_A0[OT_WORD + s->mem_index]();
2c0262af
FB		 2171 do_ljmp:
2172 if (s->pe && !s->vm86) {
2173 if (s->cc_op != CC_OP_DYNAMIC)
2174 gen_op_set_cc_op(s->cc_op);
2175 gen_op_jmp_im(pc_start - s->cs_base);
08cea4ee 2176 gen_op_ljmp_protected_T0_T1(s->pc - s->cs_base);
2c0262af
FB		 2177 } else {
2178 gen_op_movl_seg_T0_vm(offsetof(CPUX86State,segs[R_CS]));
2179 gen_op_movl_T0_T1();
2180 gen_op_jmp_T0();
2181 }
2182 gen_eob(s);
2183 break;
2184 case 6: /* push Ev */
2185 gen_push_T0(s);
2186 break;
2187 default:
2188 goto illegal_op;
2189 }
2190 break;
2191
2192 case 0x84: /* test Ev, Gv */
2193 case 0x85:
2194 if ((b & 1) == 0)
2195 ot = OT_BYTE;
2196 else
2197 ot = dflag ? OT_LONG : OT_WORD;
2198
61382a50 2199 modrm = ldub_code(s->pc++);
2c0262af
FB		 2200 mod = (modrm >> 6) & 3;
2201 rm = modrm & 7;
2202 reg = (modrm >> 3) & 7;
2203
2204 gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
2205 gen_op_mov_TN_reg[ot][1][reg + OR_EAX]();
2206 gen_op_testl_T0_T1_cc();
2207 s->cc_op = CC_OP_LOGICB + ot;
2208 break;
2209
2210 case 0xa8: /* test eAX, Iv */
2211 case 0xa9:
2212 if ((b & 1) == 0)
2213 ot = OT_BYTE;
2214 else
2215 ot = dflag ? OT_LONG : OT_WORD;
2216 val = insn_get(s, ot);
2217
2218 gen_op_mov_TN_reg[ot][0][OR_EAX]();
2219 gen_op_movl_T1_im(val);
2220 gen_op_testl_T0_T1_cc();
2221 s->cc_op = CC_OP_LOGICB + ot;
2222 break;
2223
2224 case 0x98: /* CWDE/CBW */
2225 if (dflag)
2226 gen_op_movswl_EAX_AX();
2227 else
2228 gen_op_movsbw_AX_AL();
2229 break;
2230 case 0x99: /* CDQ/CWD */
2231 if (dflag)
2232 gen_op_movslq_EDX_EAX();
2233 else
2234 gen_op_movswl_DX_AX();
2235 break;
2236 case 0x1af: /* imul Gv, Ev */
2237 case 0x69: /* imul Gv, Ev, I */
2238 case 0x6b:
2239 ot = dflag ? OT_LONG : OT_WORD;
61382a50 2240 modrm = ldub_code(s->pc++);
2c0262af
FB		 2241 reg = ((modrm >> 3) & 7) + OR_EAX;
2242 gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
2243 if (b == 0x69) {
2244 val = insn_get(s, ot);
2245 gen_op_movl_T1_im(val);
2246 } else if (b == 0x6b) {
d64477af 2247 val = (int8_t)insn_get(s, OT_BYTE);
2c0262af
FB		 2248 gen_op_movl_T1_im(val);
2249 } else {
2250 gen_op_mov_TN_reg[ot][1][reg]();
2251 }
2252
2253 if (ot == OT_LONG) {
2254 gen_op_imull_T0_T1();
2255 } else {
2256 gen_op_imulw_T0_T1();
2257 }
2258 gen_op_mov_reg_T0[ot][reg]();
d36cd60e 2259 s->cc_op = CC_OP_MULB + ot;
2c0262af
FB		 2260 break;
2261 case 0x1c0:
2262 case 0x1c1: /* xadd Ev, Gv */
2263 if ((b & 1) == 0)
2264 ot = OT_BYTE;
2265 else
2266 ot = dflag ? OT_LONG : OT_WORD;
61382a50 2267 modrm = ldub_code(s->pc++);
2c0262af
FB		 2268 reg = (modrm >> 3) & 7;
2269 mod = (modrm >> 6) & 3;
2270 if (mod == 3) {
2271 rm = modrm & 7;
2272 gen_op_mov_TN_reg[ot][0][reg]();
2273 gen_op_mov_TN_reg[ot][1][rm]();
2274 gen_op_addl_T0_T1();
2c0262af 2275 gen_op_mov_reg_T1[ot][reg]();
5a1388b6 2276 gen_op_mov_reg_T0[ot][rm]();
2c0262af
FB		 2277 } else {
2278 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2279 gen_op_mov_TN_reg[ot][0][reg]();
2280 gen_op_ld_T1_A0[ot + s->mem_index]();
2281 gen_op_addl_T0_T1();
2282 gen_op_st_T0_A0[ot + s->mem_index]();
2283 gen_op_mov_reg_T1[ot][reg]();
2284 }
2285 gen_op_update2_cc();
2286 s->cc_op = CC_OP_ADDB + ot;
2287 break;
2288 case 0x1b0:
2289 case 0x1b1: /* cmpxchg Ev, Gv */
2290 if ((b & 1) == 0)
2291 ot = OT_BYTE;
2292 else
2293 ot = dflag ? OT_LONG : OT_WORD;
61382a50 2294 modrm = ldub_code(s->pc++);
2c0262af
FB		 2295 reg = (modrm >> 3) & 7;
2296 mod = (modrm >> 6) & 3;
2297 gen_op_mov_TN_reg[ot][1][reg]();
2298 if (mod == 3) {
2299 rm = modrm & 7;
2300 gen_op_mov_TN_reg[ot][0][rm]();
2301 gen_op_cmpxchg_T0_T1_EAX_cc[ot]();
2302 gen_op_mov_reg_T0[ot][rm]();
2303 } else {
2304 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2305 gen_op_ld_T0_A0[ot + s->mem_index]();
4f31916f 2306 gen_op_cmpxchg_mem_T0_T1_EAX_cc[ot + s->mem_index]();
2c0262af
FB		 2307 }
2308 s->cc_op = CC_OP_SUBB + ot;
2309 break;
2310 case 0x1c7: /* cmpxchg8b */
61382a50 2311 modrm = ldub_code(s->pc++);
2c0262af
FB		 2312 mod = (modrm >> 6) & 3;
2313 if (mod == 3)
2314 goto illegal_op;
2315 if (s->cc_op != CC_OP_DYNAMIC)
2316 gen_op_set_cc_op(s->cc_op);
2317 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2318 gen_op_cmpxchg8b();
2319 s->cc_op = CC_OP_EFLAGS;
2320 break;
2321
2322 /**************************/
2323 /* push/pop */
2324 case 0x50 ... 0x57: /* push */
2325 gen_op_mov_TN_reg[OT_LONG][0][b & 7]();
2326 gen_push_T0(s);
2327 break;
2328 case 0x58 ... 0x5f: /* pop */
2329 ot = dflag ? OT_LONG : OT_WORD;
2330 gen_pop_T0(s);
77729c24 2331 /* NOTE: order is important for pop %sp */
2c0262af 2332 gen_pop_update(s);
77729c24 2333 gen_op_mov_reg_T0[ot][b & 7]();
2c0262af
FB		 2334 break;
2335 case 0x60: /* pusha */
2336 gen_pusha(s);
2337 break;
2338 case 0x61: /* popa */
2339 gen_popa(s);
2340 break;
2341 case 0x68: /* push Iv */
2342 case 0x6a:
2343 ot = dflag ? OT_LONG : OT_WORD;
2344 if (b == 0x68)
2345 val = insn_get(s, ot);
2346 else
2347 val = (int8_t)insn_get(s, OT_BYTE);
2348 gen_op_movl_T0_im(val);
2349 gen_push_T0(s);
2350 break;
2351 case 0x8f: /* pop Ev */
2352 ot = dflag ? OT_LONG : OT_WORD;
61382a50 2353 modrm = ldub_code(s->pc++);
77729c24 2354 mod = (modrm >> 6) & 3;
2c0262af 2355 gen_pop_T0(s);
77729c24
FB		 2356 if (mod == 3) {
2357 /* NOTE: order is important for pop %sp */
2358 gen_pop_update(s);
2359 rm = modrm & 7;
2360 gen_op_mov_reg_T0[ot][rm]();
2361 } else {
2362 /* NOTE: order is important too for MMU exceptions */
2363 s->popl_esp_hack = 2 << dflag;
2364 gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
2365 s->popl_esp_hack = 0;
2366 gen_pop_update(s);
2367 }
2c0262af
FB		 2368 break;
2369 case 0xc8: /* enter */
2370 {
2371 int level;
61382a50 2372 val = lduw_code(s->pc);
2c0262af 2373 s->pc += 2;
61382a50 2374 level = ldub_code(s->pc++);
2c0262af
FB		 2375 gen_enter(s, val, level);
2376 }
2377 break;
2378 case 0xc9: /* leave */
2379 /* XXX: exception not precise (ESP is updated before potential exception) */
2380 if (s->ss32) {
2381 gen_op_mov_TN_reg[OT_LONG][0][R_EBP]();
2382 gen_op_mov_reg_T0[OT_LONG][R_ESP]();
2383 } else {
2384 gen_op_mov_TN_reg[OT_WORD][0][R_EBP]();
2385 gen_op_mov_reg_T0[OT_WORD][R_ESP]();
2386 }
2387 gen_pop_T0(s);
2388 ot = dflag ? OT_LONG : OT_WORD;
2389 gen_op_mov_reg_T0[ot][R_EBP]();
2390 gen_pop_update(s);
2391 break;
2392 case 0x06: /* push es */
2393 case 0x0e: /* push cs */
2394 case 0x16: /* push ss */
2395 case 0x1e: /* push ds */
2396 gen_op_movl_T0_seg(b >> 3);
2397 gen_push_T0(s);
2398 break;
2399 case 0x1a0: /* push fs */
2400 case 0x1a8: /* push gs */
2401 gen_op_movl_T0_seg((b >> 3) & 7);
2402 gen_push_T0(s);
2403 break;
2404 case 0x07: /* pop es */
2405 case 0x17: /* pop ss */
2406 case 0x1f: /* pop ds */
2407 reg = b >> 3;
2408 gen_pop_T0(s);
2409 gen_movl_seg_T0(s, reg, pc_start - s->cs_base);
2410 gen_pop_update(s);
2411 if (reg == R_SS) {
a2cc3b24
FB		 2412 /* if reg == SS, inhibit interrupts/trace. */
2413 /* If several instructions disable interrupts, only the
2414 _first_ does it */
2415 if (!(s->tb->flags & HF_INHIBIT_IRQ_MASK))
2416 gen_op_set_inhibit_irq();
2c0262af
FB		 2417 s->tf = 0;
2418 }
2419 if (s->is_jmp) {
2420 gen_op_jmp_im(s->pc - s->cs_base);
2421 gen_eob(s);
2422 }
2423 break;
2424 case 0x1a1: /* pop fs */
2425 case 0x1a9: /* pop gs */
2426 gen_pop_T0(s);
2427 gen_movl_seg_T0(s, (b >> 3) & 7, pc_start - s->cs_base);
2428 gen_pop_update(s);
2429 if (s->is_jmp) {
2430 gen_op_jmp_im(s->pc - s->cs_base);
2431 gen_eob(s);
2432 }
2433 break;
2434
2435 /**************************/
2436 /* mov */
2437 case 0x88:
2438 case 0x89: /* mov Gv, Ev */
2439 if ((b & 1) == 0)
2440 ot = OT_BYTE;
2441 else
2442 ot = dflag ? OT_LONG : OT_WORD;
61382a50 2443 modrm = ldub_code(s->pc++);
2c0262af
FB		 2444 reg = (modrm >> 3) & 7;
2445
2446 /* generate a generic store */
2447 gen_ldst_modrm(s, modrm, ot, OR_EAX + reg, 1);
2448 break;
2449 case 0xc6:
2450 case 0xc7: /* mov Ev, Iv */
2451 if ((b & 1) == 0)
2452 ot = OT_BYTE;
2453 else
2454 ot = dflag ? OT_LONG : OT_WORD;
61382a50 2455 modrm = ldub_code(s->pc++);
2c0262af
FB		 2456 mod = (modrm >> 6) & 3;
2457 if (mod != 3)
2458 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2459 val = insn_get(s, ot);
2460 gen_op_movl_T0_im(val);
2461 if (mod != 3)
2462 gen_op_st_T0_A0[ot + s->mem_index]();
2463 else
2464 gen_op_mov_reg_T0[ot][modrm & 7]();
2465 break;
2466 case 0x8a:
2467 case 0x8b: /* mov Ev, Gv */
2468 if ((b & 1) == 0)
2469 ot = OT_BYTE;
2470 else
2471 ot = dflag ? OT_LONG : OT_WORD;
61382a50 2472 modrm = ldub_code(s->pc++);
2c0262af
FB		 2473 reg = (modrm >> 3) & 7;
2474
2475 gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
2476 gen_op_mov_reg_T0[ot][reg]();
2477 break;
2478 case 0x8e: /* mov seg, Gv */
61382a50 2479 modrm = ldub_code(s->pc++);
2c0262af
FB		 2480 reg = (modrm >> 3) & 7;
2481 if (reg >= 6 || reg == R_CS)
2482 goto illegal_op;
2483 gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
2484 gen_movl_seg_T0(s, reg, pc_start - s->cs_base);
2485 if (reg == R_SS) {
2486 /* if reg == SS, inhibit interrupts/trace */
a2cc3b24
FB		 2487 /* If several instructions disable interrupts, only the
2488 _first_ does it */
2489 if (!(s->tb->flags & HF_INHIBIT_IRQ_MASK))
2490 gen_op_set_inhibit_irq();
2c0262af
FB		 2491 s->tf = 0;
2492 }
2493 if (s->is_jmp) {
2494 gen_op_jmp_im(s->pc - s->cs_base);
2495 gen_eob(s);
2496 }
2497 break;
2498 case 0x8c: /* mov Gv, seg */
61382a50 2499 modrm = ldub_code(s->pc++);
2c0262af
FB		 2500 reg = (modrm >> 3) & 7;
2501 mod = (modrm >> 6) & 3;
2502 if (reg >= 6)
2503 goto illegal_op;
2504 gen_op_movl_T0_seg(reg);
2505 ot = OT_WORD;
2506 if (mod == 3 && dflag)
2507 ot = OT_LONG;
2508 gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
2509 break;
2510
2511 case 0x1b6: /* movzbS Gv, Eb */
2512 case 0x1b7: /* movzwS Gv, Eb */
2513 case 0x1be: /* movsbS Gv, Eb */
2514 case 0x1bf: /* movswS Gv, Eb */
2515 {
2516 int d_ot;
2517 /* d_ot is the size of destination */
2518 d_ot = dflag + OT_WORD;
2519 /* ot is the size of source */
2520 ot = (b & 1) + OT_BYTE;
61382a50 2521 modrm = ldub_code(s->pc++);
2c0262af
FB		 2522 reg = ((modrm >> 3) & 7) + OR_EAX;
2523 mod = (modrm >> 6) & 3;
2524 rm = modrm & 7;
2525
2526 if (mod == 3) {
2527 gen_op_mov_TN_reg[ot][0][rm]();
2528 switch(ot | (b & 8)) {
2529 case OT_BYTE:
2530 gen_op_movzbl_T0_T0();
2531 break;
2532 case OT_BYTE | 8:
2533 gen_op_movsbl_T0_T0();
2534 break;
2535 case OT_WORD:
2536 gen_op_movzwl_T0_T0();
2537 break;
2538 default:
2539 case OT_WORD | 8:
2540 gen_op_movswl_T0_T0();
2541 break;
2542 }
2543 gen_op_mov_reg_T0[d_ot][reg]();
2544 } else {
2545 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2546 if (b & 8) {
2547 gen_op_lds_T0_A0[ot + s->mem_index]();
2548 } else {
2549 gen_op_ldu_T0_A0[ot + s->mem_index]();
2550 }
2551 gen_op_mov_reg_T0[d_ot][reg]();
2552 }
2553 }
2554 break;
2555
2556 case 0x8d: /* lea */
2557 ot = dflag ? OT_LONG : OT_WORD;
61382a50 2558 modrm = ldub_code(s->pc++);
3a1d9b8b
FB		 2559 mod = (modrm >> 6) & 3;
2560 if (mod == 3)
2561 goto illegal_op;
2c0262af
FB		 2562 reg = (modrm >> 3) & 7;
2563 /* we must ensure that no segment is added */
2564 s->override = -1;
2565 val = s->addseg;
2566 s->addseg = 0;
2567 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2568 s->addseg = val;
2569 gen_op_mov_reg_A0[ot - OT_WORD][reg]();
2570 break;
2571
2572 case 0xa0: /* mov EAX, Ov */
2573 case 0xa1:
2574 case 0xa2: /* mov Ov, EAX */
2575 case 0xa3:
2576 if ((b & 1) == 0)
2577 ot = OT_BYTE;
2578 else
2579 ot = dflag ? OT_LONG : OT_WORD;
2580 if (s->aflag)
2581 offset_addr = insn_get(s, OT_LONG);
2582 else
2583 offset_addr = insn_get(s, OT_WORD);
2584 gen_op_movl_A0_im(offset_addr);
2585 /* handle override */
2586 {
2587 int override, must_add_seg;
2588 must_add_seg = s->addseg;
2589 if (s->override >= 0) {
2590 override = s->override;
2591 must_add_seg = 1;
2592 } else {
2593 override = R_DS;
2594 }
2595 if (must_add_seg) {
2596 gen_op_addl_A0_seg(offsetof(CPUX86State,segs[override].base));
2597 }
2598 }
2599 if ((b & 2) == 0) {
2600 gen_op_ld_T0_A0[ot + s->mem_index]();
2601 gen_op_mov_reg_T0[ot][R_EAX]();
2602 } else {
2603 gen_op_mov_TN_reg[ot][0][R_EAX]();
2604 gen_op_st_T0_A0[ot + s->mem_index]();
2605 }
2606 break;
2607 case 0xd7: /* xlat */
2608 gen_op_movl_A0_reg[R_EBX]();
2609 gen_op_addl_A0_AL();
2610 if (s->aflag == 0)
2611 gen_op_andl_A0_ffff();
2612 /* handle override */
2613 {
2614 int override, must_add_seg;
2615 must_add_seg = s->addseg;
2616 override = R_DS;
2617 if (s->override >= 0) {
2618 override = s->override;
2619 must_add_seg = 1;
2620 } else {
2621 override = R_DS;
2622 }
2623 if (must_add_seg) {
2624 gen_op_addl_A0_seg(offsetof(CPUX86State,segs[override].base));
2625 }
2626 }
2627 gen_op_ldu_T0_A0[OT_BYTE + s->mem_index]();
2628 gen_op_mov_reg_T0[OT_BYTE][R_EAX]();
2629 break;
2630 case 0xb0 ... 0xb7: /* mov R, Ib */
2631 val = insn_get(s, OT_BYTE);
2632 gen_op_movl_T0_im(val);
2633 gen_op_mov_reg_T0[OT_BYTE][b & 7]();
2634 break;
2635 case 0xb8 ... 0xbf: /* mov R, Iv */
2636 ot = dflag ? OT_LONG : OT_WORD;
2637 val = insn_get(s, ot);
2638 reg = OR_EAX + (b & 7);
2639 gen_op_movl_T0_im(val);
2640 gen_op_mov_reg_T0[ot][reg]();
2641 break;
2642
2643 case 0x91 ... 0x97: /* xchg R, EAX */
2644 ot = dflag ? OT_LONG : OT_WORD;
2645 reg = b & 7;
2646 rm = R_EAX;
2647 goto do_xchg_reg;
2648 case 0x86:
2649 case 0x87: /* xchg Ev, Gv */
2650 if ((b & 1) == 0)
2651 ot = OT_BYTE;
2652 else
2653 ot = dflag ? OT_LONG : OT_WORD;
61382a50 2654 modrm = ldub_code(s->pc++);
2c0262af
FB		 2655 reg = (modrm >> 3) & 7;
2656 mod = (modrm >> 6) & 3;
2657 if (mod == 3) {
2658 rm = modrm & 7;
2659 do_xchg_reg:
2660 gen_op_mov_TN_reg[ot][0][reg]();
2661 gen_op_mov_TN_reg[ot][1][rm]();
2662 gen_op_mov_reg_T0[ot][rm]();
2663 gen_op_mov_reg_T1[ot][reg]();
2664 } else {
2665 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2666 gen_op_mov_TN_reg[ot][0][reg]();
2667 /* for xchg, lock is implicit */
2668 if (!(prefixes & PREFIX_LOCK))
2669 gen_op_lock();
2670 gen_op_ld_T1_A0[ot + s->mem_index]();
2671 gen_op_st_T0_A0[ot + s->mem_index]();
2672 if (!(prefixes & PREFIX_LOCK))
2673 gen_op_unlock();
2674 gen_op_mov_reg_T1[ot][reg]();
2675 }
2676 break;
2677 case 0xc4: /* les Gv */
2678 op = R_ES;
2679 goto do_lxx;
2680 case 0xc5: /* lds Gv */
2681 op = R_DS;
2682 goto do_lxx;
2683 case 0x1b2: /* lss Gv */
2684 op = R_SS;
2685 goto do_lxx;
2686 case 0x1b4: /* lfs Gv */
2687 op = R_FS;
2688 goto do_lxx;
2689 case 0x1b5: /* lgs Gv */
2690 op = R_GS;
2691 do_lxx:
2692 ot = dflag ? OT_LONG : OT_WORD;
61382a50 2693 modrm = ldub_code(s->pc++);
2c0262af
FB		 2694 reg = (modrm >> 3) & 7;
2695 mod = (modrm >> 6) & 3;
2696 if (mod == 3)
2697 goto illegal_op;
2698 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2699 gen_op_ld_T1_A0[ot + s->mem_index]();
2700 gen_op_addl_A0_im(1 << (ot - OT_WORD + 1));
2701 /* load the segment first to handle exceptions properly */
61382a50 2702 gen_op_ldu_T0_A0[OT_WORD + s->mem_index]();
2c0262af
FB		 2703 gen_movl_seg_T0(s, op, pc_start - s->cs_base);
2704 /* then put the data */
2705 gen_op_mov_reg_T1[ot][reg]();
2706 if (s->is_jmp) {
2707 gen_op_jmp_im(s->pc - s->cs_base);
2708 gen_eob(s);
2709 }
2710 break;
2711
2712 /************************/
2713 /* shifts */
2714 case 0xc0:
2715 case 0xc1:
2716 /* shift Ev,Ib */
2717 shift = 2;
2718 grp2:
2719 {
2720 if ((b & 1) == 0)
2721 ot = OT_BYTE;
2722 else
2723 ot = dflag ? OT_LONG : OT_WORD;
2724
61382a50 2725 modrm = ldub_code(s->pc++);
2c0262af
FB		 2726 mod = (modrm >> 6) & 3;
2727 rm = modrm & 7;
2728 op = (modrm >> 3) & 7;
2729
2730 if (mod != 3) {
2731 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2732 opreg = OR_TMP0;
2733 } else {
2734 opreg = rm + OR_EAX;
2735 }
2736
2737 /* simpler op */
2738 if (shift == 0) {
2739 gen_shift(s, op, ot, opreg, OR_ECX);
2740 } else {
2741 if (shift == 2) {
61382a50 2742 shift = ldub_code(s->pc++);
2c0262af
FB		 2743 }
2744 gen_shifti(s, op, ot, opreg, shift);
2745 }
2746 }
2747 break;
2748 case 0xd0:
2749 case 0xd1:
2750 /* shift Ev,1 */
2751 shift = 1;
2752 goto grp2;
2753 case 0xd2:
2754 case 0xd3:
2755 /* shift Ev,cl */
2756 shift = 0;
2757 goto grp2;
2758
2759 case 0x1a4: /* shld imm */
2760 op = 0;
2761 shift = 1;
2762 goto do_shiftd;
2763 case 0x1a5: /* shld cl */
2764 op = 0;
2765 shift = 0;
2766 goto do_shiftd;
2767 case 0x1ac: /* shrd imm */
2768 op = 1;
2769 shift = 1;
2770 goto do_shiftd;
2771 case 0x1ad: /* shrd cl */
2772 op = 1;
2773 shift = 0;
2774 do_shiftd:
2775 ot = dflag ? OT_LONG : OT_WORD;
61382a50 2776 modrm = ldub_code(s->pc++);
2c0262af
FB		 2777 mod = (modrm >> 6) & 3;
2778 rm = modrm & 7;
2779 reg = (modrm >> 3) & 7;
2780
2781 if (mod != 3) {
2782 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2783 gen_op_ld_T0_A0[ot + s->mem_index]();
2784 } else {
2785 gen_op_mov_TN_reg[ot][0][rm]();
2786 }
2787 gen_op_mov_TN_reg[ot][1][reg]();
2788
2789 if (shift) {
61382a50 2790 val = ldub_code(s->pc++);
2c0262af
FB		 2791 val &= 0x1f;
2792 if (val) {
2793 if (mod == 3)
4f31916f 2794 gen_op_shiftd_T0_T1_im_cc[ot][op](val);
2c0262af 2795 else
4f31916f 2796 gen_op_shiftd_mem_T0_T1_im_cc[ot + s->mem_index][op](val);
2c0262af
FB		 2797 if (op == 0 && ot != OT_WORD)
2798 s->cc_op = CC_OP_SHLB + ot;
2799 else
2800 s->cc_op = CC_OP_SARB + ot;
2801 }
2802 } else {
2803 if (s->cc_op != CC_OP_DYNAMIC)
2804 gen_op_set_cc_op(s->cc_op);
2805 if (mod == 3)
4f31916f 2806 gen_op_shiftd_T0_T1_ECX_cc[ot][op]();
2c0262af 2807 else
4f31916f 2808 gen_op_shiftd_mem_T0_T1_ECX_cc[ot + s->mem_index][op]();
2c0262af
FB		 2809 s->cc_op = CC_OP_DYNAMIC; /* cannot predict flags after */
2810 }
2811 if (mod == 3) {
2812 gen_op_mov_reg_T0[ot][rm]();
2813 }
2814 break;
2815
2816 /************************/
2817 /* floats */
2818 case 0xd8 ... 0xdf:
7eee2a50
FB		 2819 if (s->flags & (HF_EM_MASK | HF_TS_MASK)) {
2820 /* if CR0.EM or CR0.TS are set, generate an FPU exception */
2821 /* XXX: what to do if illegal op ? */
2822 gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
2823 break;
2824 }
61382a50 2825 modrm = ldub_code(s->pc++);
2c0262af
FB		 2826 mod = (modrm >> 6) & 3;
2827 rm = modrm & 7;
2828 op = ((b & 7) << 3) | ((modrm >> 3) & 7);
2c0262af
FB		 2829 if (mod != 3) {
2830 /* memory op */
2831 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
2832 switch(op) {
2833 case 0x00 ... 0x07: /* fxxxs */
2834 case 0x10 ... 0x17: /* fixxxl */
2835 case 0x20 ... 0x27: /* fxxxl */
2836 case 0x30 ... 0x37: /* fixxx */
2837 {
2838 int op1;
2839 op1 = op & 7;
2840
2841 switch(op >> 4) {
2842 case 0:
2843 gen_op_flds_FT0_A0();
2844 break;
2845 case 1:
2846 gen_op_fildl_FT0_A0();
2847 break;
2848 case 2:
2849 gen_op_fldl_FT0_A0();
2850 break;
2851 case 3:
2852 default:
2853 gen_op_fild_FT0_A0();
2854 break;
2855 }
2856
2857 gen_op_fp_arith_ST0_FT0[op1]();
2858 if (op1 == 3) {
2859 /* fcomp needs pop */
2860 gen_op_fpop();
2861 }
2862 }
2863 break;
2864 case 0x08: /* flds */
2865 case 0x0a: /* fsts */
2866 case 0x0b: /* fstps */
2867 case 0x18: /* fildl */
2868 case 0x1a: /* fistl */
2869 case 0x1b: /* fistpl */
2870 case 0x28: /* fldl */
2871 case 0x2a: /* fstl */
2872 case 0x2b: /* fstpl */
2873 case 0x38: /* filds */
2874 case 0x3a: /* fists */
2875 case 0x3b: /* fistps */
2876
2877 switch(op & 7) {
2878 case 0:
2879 switch(op >> 4) {
2880 case 0:
2881 gen_op_flds_ST0_A0();
2882 break;
2883 case 1:
2884 gen_op_fildl_ST0_A0();
2885 break;
2886 case 2:
2887 gen_op_fldl_ST0_A0();
2888 break;
2889 case 3:
2890 default:
2891 gen_op_fild_ST0_A0();
2892 break;
2893 }
2894 break;
2895 default:
2896 switch(op >> 4) {
2897 case 0:
2898 gen_op_fsts_ST0_A0();
2899 break;
2900 case 1:
2901 gen_op_fistl_ST0_A0();
2902 break;
2903 case 2:
2904 gen_op_fstl_ST0_A0();
2905 break;
2906 case 3:
2907 default:
2908 gen_op_fist_ST0_A0();
2909 break;
2910 }
2911 if ((op & 7) == 3)
2912 gen_op_fpop();
2913 break;
2914 }
2915 break;
2916 case 0x0c: /* fldenv mem */
2917 gen_op_fldenv_A0(s->dflag);
2918 break;
2919 case 0x0d: /* fldcw mem */
2920 gen_op_fldcw_A0();
2921 break;
2922 case 0x0e: /* fnstenv mem */
2923 gen_op_fnstenv_A0(s->dflag);
2924 break;
2925 case 0x0f: /* fnstcw mem */
2926 gen_op_fnstcw_A0();
2927 break;
2928 case 0x1d: /* fldt mem */
2929 gen_op_fldt_ST0_A0();
2930 break;
2931 case 0x1f: /* fstpt mem */
2932 gen_op_fstt_ST0_A0();
2933 gen_op_fpop();
2934 break;
2935 case 0x2c: /* frstor mem */
2936 gen_op_frstor_A0(s->dflag);
2937 break;
2938 case 0x2e: /* fnsave mem */
2939 gen_op_fnsave_A0(s->dflag);
2940 break;
2941 case 0x2f: /* fnstsw mem */
2942 gen_op_fnstsw_A0();
2943 break;
2944 case 0x3c: /* fbld */
2945 gen_op_fbld_ST0_A0();
2946 break;
2947 case 0x3e: /* fbstp */
2948 gen_op_fbst_ST0_A0();
2949 gen_op_fpop();
2950 break;
2951 case 0x3d: /* fildll */
2952 gen_op_fildll_ST0_A0();
2953 break;
2954 case 0x3f: /* fistpll */
2955 gen_op_fistll_ST0_A0();
2956 gen_op_fpop();
2957 break;
2958 default:
2959 goto illegal_op;
2960 }
2961 } else {
2962 /* register float ops */
2963 opreg = rm;
2964
2965 switch(op) {
2966 case 0x08: /* fld sti */
2967 gen_op_fpush();
2968 gen_op_fmov_ST0_STN((opreg + 1) & 7);
2969 break;
2970 case 0x09: /* fxchg sti */
2971 gen_op_fxchg_ST0_STN(opreg);
2972 break;
2973 case 0x0a: /* grp d9/2 */
2974 switch(rm) {
2975 case 0: /* fnop */
2976 break;
2977 default:
2978 goto illegal_op;
2979 }
2980 break;
2981 case 0x0c: /* grp d9/4 */
2982 switch(rm) {
2983 case 0: /* fchs */
2984 gen_op_fchs_ST0();
2985 break;
2986 case 1: /* fabs */
2987 gen_op_fabs_ST0();
2988 break;
2989 case 4: /* ftst */
2990 gen_op_fldz_FT0();
2991 gen_op_fcom_ST0_FT0();
2992 break;
2993 case 5: /* fxam */
2994 gen_op_fxam_ST0();
2995 break;
2996 default:
2997 goto illegal_op;
2998 }
2999 break;
3000 case 0x0d: /* grp d9/5 */
3001 {
3002 switch(rm) {
3003 case 0:
3004 gen_op_fpush();
3005 gen_op_fld1_ST0();
3006 break;
3007 case 1:
3008 gen_op_fpush();
3009 gen_op_fldl2t_ST0();
3010 break;
3011 case 2:
3012 gen_op_fpush();
3013 gen_op_fldl2e_ST0();
3014 break;
3015 case 3:
3016 gen_op_fpush();
3017 gen_op_fldpi_ST0();
3018 break;
3019 case 4:
3020 gen_op_fpush();
3021 gen_op_fldlg2_ST0();
3022 break;
3023 case 5:
3024 gen_op_fpush();
3025 gen_op_fldln2_ST0();
3026 break;
3027 case 6:
3028 gen_op_fpush();
3029 gen_op_fldz_ST0();
3030 break;
3031 default:
3032 goto illegal_op;
3033 }
3034 }
3035 break;
3036 case 0x0e: /* grp d9/6 */
3037 switch(rm) {
3038 case 0: /* f2xm1 */
3039 gen_op_f2xm1();
3040 break;
3041 case 1: /* fyl2x */
3042 gen_op_fyl2x();
3043 break;
3044 case 2: /* fptan */
3045 gen_op_fptan();
3046 break;
3047 case 3: /* fpatan */
3048 gen_op_fpatan();
3049 break;
3050 case 4: /* fxtract */
3051 gen_op_fxtract();
3052 break;
3053 case 5: /* fprem1 */
3054 gen_op_fprem1();
3055 break;
3056 case 6: /* fdecstp */
3057 gen_op_fdecstp();
3058 break;
3059 default:
3060 case 7: /* fincstp */
3061 gen_op_fincstp();
3062 break;
3063 }
3064 break;
3065 case 0x0f: /* grp d9/7 */
3066 switch(rm) {
3067 case 0: /* fprem */
3068 gen_op_fprem();
3069 break;
3070 case 1: /* fyl2xp1 */
3071 gen_op_fyl2xp1();
3072 break;
3073 case 2: /* fsqrt */
3074 gen_op_fsqrt();
3075 break;
3076 case 3: /* fsincos */
3077 gen_op_fsincos();
3078 break;
3079 case 5: /* fscale */
3080 gen_op_fscale();
3081 break;
3082 case 4: /* frndint */
3083 gen_op_frndint();
3084 break;
3085 case 6: /* fsin */
3086 gen_op_fsin();
3087 break;
3088 default:
3089 case 7: /* fcos */
3090 gen_op_fcos();
3091 break;
3092 }
3093 break;
3094 case 0x00: case 0x01: case 0x04 ... 0x07: /* fxxx st, sti */
3095 case 0x20: case 0x21: case 0x24 ... 0x27: /* fxxx sti, st */
3096 case 0x30: case 0x31: case 0x34 ... 0x37: /* fxxxp sti, st */
3097 {
3098 int op1;
3099
3100 op1 = op & 7;
3101 if (op >= 0x20) {
3102 gen_op_fp_arith_STN_ST0[op1](opreg);
3103 if (op >= 0x30)
3104 gen_op_fpop();
3105 } else {
3106 gen_op_fmov_FT0_STN(opreg);
3107 gen_op_fp_arith_ST0_FT0[op1]();
3108 }
3109 }
3110 break;
3111 case 0x02: /* fcom */
3112 gen_op_fmov_FT0_STN(opreg);
3113 gen_op_fcom_ST0_FT0();
3114 break;
3115 case 0x03: /* fcomp */
3116 gen_op_fmov_FT0_STN(opreg);
3117 gen_op_fcom_ST0_FT0();
3118 gen_op_fpop();
3119 break;
3120 case 0x15: /* da/5 */
3121 switch(rm) {
3122 case 1: /* fucompp */
3123 gen_op_fmov_FT0_STN(1);
3124 gen_op_fucom_ST0_FT0();
3125 gen_op_fpop();
3126 gen_op_fpop();
3127 break;
3128 default:
3129 goto illegal_op;
3130 }
3131 break;
3132 case 0x1c:
3133 switch(rm) {
3134 case 0: /* feni (287 only, just do nop here) */
3135 break;
3136 case 1: /* fdisi (287 only, just do nop here) */
3137 break;
3138 case 2: /* fclex */
3139 gen_op_fclex();
3140 break;
3141 case 3: /* fninit */
3142 gen_op_fninit();
3143 break;
3144 case 4: /* fsetpm (287 only, just do nop here) */
3145 break;
3146 default:
3147 goto illegal_op;
3148 }
3149 break;
3150 case 0x1d: /* fucomi */
3151 if (s->cc_op != CC_OP_DYNAMIC)
3152 gen_op_set_cc_op(s->cc_op);
3153 gen_op_fmov_FT0_STN(opreg);
3154 gen_op_fucomi_ST0_FT0();
3155 s->cc_op = CC_OP_EFLAGS;
3156 break;
3157 case 0x1e: /* fcomi */
3158 if (s->cc_op != CC_OP_DYNAMIC)
3159 gen_op_set_cc_op(s->cc_op);
3160 gen_op_fmov_FT0_STN(opreg);
3161 gen_op_fcomi_ST0_FT0();
3162 s->cc_op = CC_OP_EFLAGS;
3163 break;
3164 case 0x2a: /* fst sti */
3165 gen_op_fmov_STN_ST0(opreg);
3166 break;
3167 case 0x2b: /* fstp sti */
3168 gen_op_fmov_STN_ST0(opreg);
3169 gen_op_fpop();
3170 break;
3171 case 0x2c: /* fucom st(i) */
3172 gen_op_fmov_FT0_STN(opreg);
3173 gen_op_fucom_ST0_FT0();
3174 break;
3175 case 0x2d: /* fucomp st(i) */
3176 gen_op_fmov_FT0_STN(opreg);
3177 gen_op_fucom_ST0_FT0();
3178 gen_op_fpop();
3179 break;
3180 case 0x33: /* de/3 */
3181 switch(rm) {
3182 case 1: /* fcompp */
3183 gen_op_fmov_FT0_STN(1);
3184 gen_op_fcom_ST0_FT0();
3185 gen_op_fpop();
3186 gen_op_fpop();
3187 break;
3188 default:
3189 goto illegal_op;
3190 }
3191 break;
3192 case 0x3c: /* df/4 */
3193 switch(rm) {
3194 case 0:
3195 gen_op_fnstsw_EAX();
3196 break;
3197 default:
3198 goto illegal_op;
3199 }
3200 break;
3201 case 0x3d: /* fucomip */
3202 if (s->cc_op != CC_OP_DYNAMIC)
3203 gen_op_set_cc_op(s->cc_op);
3204 gen_op_fmov_FT0_STN(opreg);
3205 gen_op_fucomi_ST0_FT0();
3206 gen_op_fpop();
3207 s->cc_op = CC_OP_EFLAGS;
3208 break;
3209 case 0x3e: /* fcomip */
3210 if (s->cc_op != CC_OP_DYNAMIC)
3211 gen_op_set_cc_op(s->cc_op);
3212 gen_op_fmov_FT0_STN(opreg);
3213 gen_op_fcomi_ST0_FT0();
3214 gen_op_fpop();
3215 s->cc_op = CC_OP_EFLAGS;
3216 break;
a2cc3b24
FB		 3217 case 0x10 ... 0x13: /* fcmovxx */
3218 case 0x18 ... 0x1b:
3219 {
3220 int op1;
3221 const static uint8_t fcmov_cc[8] = {
3222 (JCC_B << 1),
3223 (JCC_Z << 1),
3224 (JCC_BE << 1),
3225 (JCC_P << 1),
3226 };
3227 op1 = fcmov_cc[op & 3] | ((op >> 3) & 1);
3228 gen_setcc(s, op1);
3229 gen_op_fcmov_ST0_STN_T0(opreg);
3230 }
3231 break;
2c0262af
FB		 3232 default:
3233 goto illegal_op;
3234 }
3235 }
7eee2a50
FB		 3236#ifdef USE_CODE_COPY
3237 s->tb->cflags |= CF_TB_FP_USED;
3238#endif
2c0262af
FB		 3239 break;
3240 /************************/
3241 /* string ops */
3242
3243 case 0xa4: /* movsS */
3244 case 0xa5:
3245 if ((b & 1) == 0)
3246 ot = OT_BYTE;
3247 else
3248 ot = dflag ? OT_LONG : OT_WORD;
3249
3250 if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
3251 gen_repz_movs(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
3252 } else {
3253 gen_movs(s, ot);
3254 }
3255 break;
3256
3257 case 0xaa: /* stosS */
3258 case 0xab:
3259 if ((b & 1) == 0)
3260 ot = OT_BYTE;
3261 else
3262 ot = dflag ? OT_LONG : OT_WORD;
3263
3264 if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
3265 gen_repz_stos(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
3266 } else {
3267 gen_stos(s, ot);
3268 }
3269 break;
3270 case 0xac: /* lodsS */
3271 case 0xad:
3272 if ((b & 1) == 0)
3273 ot = OT_BYTE;
3274 else
3275 ot = dflag ? OT_LONG : OT_WORD;
3276 if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
3277 gen_repz_lods(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
3278 } else {
3279 gen_lods(s, ot);
3280 }
3281 break;
3282 case 0xae: /* scasS */
3283 case 0xaf:
3284 if ((b & 1) == 0)
3285 ot = OT_BYTE;
3286 else
3287 ot = dflag ? OT_LONG : OT_WORD;
3288 if (prefixes & PREFIX_REPNZ) {
3289 gen_repz_scas(s, ot, pc_start - s->cs_base, s->pc - s->cs_base, 1);
3290 } else if (prefixes & PREFIX_REPZ) {
3291 gen_repz_scas(s, ot, pc_start - s->cs_base, s->pc - s->cs_base, 0);
3292 } else {
3293 gen_scas(s, ot);
3294 s->cc_op = CC_OP_SUBB + ot;
3295 }
3296 break;
3297
3298 case 0xa6: /* cmpsS */
3299 case 0xa7:
3300 if ((b & 1) == 0)
3301 ot = OT_BYTE;
3302 else
3303 ot = dflag ? OT_LONG : OT_WORD;
3304 if (prefixes & PREFIX_REPNZ) {
3305 gen_repz_cmps(s, ot, pc_start - s->cs_base, s->pc - s->cs_base, 1);
3306 } else if (prefixes & PREFIX_REPZ) {
3307 gen_repz_cmps(s, ot, pc_start - s->cs_base, s->pc - s->cs_base, 0);
3308 } else {
3309 gen_cmps(s, ot);
3310 s->cc_op = CC_OP_SUBB + ot;
3311 }
3312 break;
3313 case 0x6c: /* insS */
3314 case 0x6d:
f115e911
FB		 3315 if ((b & 1) == 0)
3316 ot = OT_BYTE;
3317 else
3318 ot = dflag ? OT_LONG : OT_WORD;
3319 gen_check_io(s, ot, 1, pc_start - s->cs_base);
3320 if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
3321 gen_repz_ins(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
2c0262af 3322 } else {
f115e911 3323 gen_ins(s, ot);
2c0262af
FB		 3324 }
3325 break;
3326 case 0x6e: /* outsS */
3327 case 0x6f:
f115e911
FB		 3328 if ((b & 1) == 0)
3329 ot = OT_BYTE;
3330 else
3331 ot = dflag ? OT_LONG : OT_WORD;
3332 gen_check_io(s, ot, 1, pc_start - s->cs_base);
3333 if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
3334 gen_repz_outs(s, ot, pc_start - s->cs_base, s->pc - s->cs_base);
2c0262af 3335 } else {
f115e911 3336 gen_outs(s, ot);
2c0262af
FB		 3337 }
3338 break;
3339
3340 /************************/
3341 /* port I/O */
3342 case 0xe4:
3343 case 0xe5:
f115e911
FB		 3344 if ((b & 1) == 0)
3345 ot = OT_BYTE;
3346 else
3347 ot = dflag ? OT_LONG : OT_WORD;
3348 val = ldub_code(s->pc++);
3349 gen_op_movl_T0_im(val);
3350 gen_check_io(s, ot, 0, pc_start - s->cs_base);
3351 gen_op_in[ot]();
3352 gen_op_mov_reg_T1[ot][R_EAX]();
2c0262af
FB		 3353 break;
3354 case 0xe6:
3355 case 0xe7:
f115e911
FB		 3356 if ((b & 1) == 0)
3357 ot = OT_BYTE;
3358 else
3359 ot = dflag ? OT_LONG : OT_WORD;
3360 val = ldub_code(s->pc++);
3361 gen_op_movl_T0_im(val);
3362 gen_check_io(s, ot, 0, pc_start - s->cs_base);
3363 gen_op_mov_TN_reg[ot][1][R_EAX]();
3364 gen_op_out[ot]();
2c0262af
FB		 3365 break;
3366 case 0xec:
3367 case 0xed:
f115e911
FB		 3368 if ((b & 1) == 0)
3369 ot = OT_BYTE;
3370 else
3371 ot = dflag ? OT_LONG : OT_WORD;
3372 gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
4f31916f 3373 gen_op_andl_T0_ffff();
f115e911
FB		 3374 gen_check_io(s, ot, 0, pc_start - s->cs_base);
3375 gen_op_in[ot]();
3376 gen_op_mov_reg_T1[ot][R_EAX]();
2c0262af
FB		 3377 break;
3378 case 0xee:
3379 case 0xef:
f115e911
FB		 3380 if ((b & 1) == 0)
3381 ot = OT_BYTE;
3382 else
3383 ot = dflag ? OT_LONG : OT_WORD;
3384 gen_op_mov_TN_reg[OT_WORD][0][R_EDX]();
4f31916f 3385 gen_op_andl_T0_ffff();
f115e911
FB		 3386 gen_check_io(s, ot, 0, pc_start - s->cs_base);
3387 gen_op_mov_TN_reg[ot][1][R_EAX]();
3388 gen_op_out[ot]();
2c0262af
FB		 3389 break;
3390
3391 /************************/
3392 /* control */
3393 case 0xc2: /* ret im */
61382a50 3394 val = ldsw_code(s->pc);
2c0262af
FB		 3395 s->pc += 2;
3396 gen_pop_T0(s);
3397 gen_stack_update(s, val + (2 << s->dflag));
3398 if (s->dflag == 0)
3399 gen_op_andl_T0_ffff();
3400 gen_op_jmp_T0();
3401 gen_eob(s);
3402 break;
3403 case 0xc3: /* ret */
3404 gen_pop_T0(s);
3405 gen_pop_update(s);
3406 if (s->dflag == 0)
3407 gen_op_andl_T0_ffff();
3408 gen_op_jmp_T0();
3409 gen_eob(s);
3410 break;
3411 case 0xca: /* lret im */
61382a50 3412 val = ldsw_code(s->pc);
2c0262af
FB		 3413 s->pc += 2;
3414 do_lret:
3415 if (s->pe && !s->vm86) {
3416 if (s->cc_op != CC_OP_DYNAMIC)
3417 gen_op_set_cc_op(s->cc_op);
3418 gen_op_jmp_im(pc_start - s->cs_base);
3419 gen_op_lret_protected(s->dflag, val);
3420 } else {
3421 gen_stack_A0(s);
3422 /* pop offset */
3423 gen_op_ld_T0_A0[1 + s->dflag + s->mem_index]();
3424 if (s->dflag == 0)
3425 gen_op_andl_T0_ffff();
3426 /* NOTE: keeping EIP updated is not a problem in case of
3427 exception */
3428 gen_op_jmp_T0();
3429 /* pop selector */
3430 gen_op_addl_A0_im(2 << s->dflag);
3431 gen_op_ld_T0_A0[1 + s->dflag + s->mem_index]();
3432 gen_op_movl_seg_T0_vm(offsetof(CPUX86State,segs[R_CS]));
3433 /* add stack offset */
3434 gen_stack_update(s, val + (4 << s->dflag));
3435 }
3436 gen_eob(s);
3437 break;
3438 case 0xcb: /* lret */
3439 val = 0;
3440 goto do_lret;
3441 case 0xcf: /* iret */
3442 if (!s->pe) {
3443 /* real mode */
3444 gen_op_iret_real(s->dflag);
3445 s->cc_op = CC_OP_EFLAGS;
f115e911
FB		 3446 } else if (s->vm86) {
3447 if (s->iopl != 3) {
3448 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3449 } else {
3450 gen_op_iret_real(s->dflag);
3451 s->cc_op = CC_OP_EFLAGS;
3452 }
2c0262af
FB		 3453 } else {
3454 if (s->cc_op != CC_OP_DYNAMIC)
3455 gen_op_set_cc_op(s->cc_op);
3456 gen_op_jmp_im(pc_start - s->cs_base);
08cea4ee 3457 gen_op_iret_protected(s->dflag, s->pc - s->cs_base);
2c0262af
FB		 3458 s->cc_op = CC_OP_EFLAGS;
3459 }
3460 gen_eob(s);
3461 break;
3462 case 0xe8: /* call im */
3463 {
3464 unsigned int next_eip;
3465 ot = dflag ? OT_LONG : OT_WORD;
3466 val = insn_get(s, ot);
3467 next_eip = s->pc - s->cs_base;
3468 val += next_eip;
3469 if (s->dflag == 0)
3470 val &= 0xffff;
3471 gen_op_movl_T0_im(next_eip);
3472 gen_push_T0(s);
3473 gen_jmp(s, val);
3474 }
3475 break;
3476 case 0x9a: /* lcall im */
3477 {
3478 unsigned int selector, offset;
3479
3480 ot = dflag ? OT_LONG : OT_WORD;
3481 offset = insn_get(s, ot);
3482 selector = insn_get(s, OT_WORD);
3483
3484 gen_op_movl_T0_im(selector);
3485 gen_op_movl_T1_im(offset);
3486 }
3487 goto do_lcall;
3488 case 0xe9: /* jmp */
3489 ot = dflag ? OT_LONG : OT_WORD;
3490 val = insn_get(s, ot);
3491 val += s->pc - s->cs_base;
3492 if (s->dflag == 0)
3493 val = val & 0xffff;
3494 gen_jmp(s, val);
3495 break;
3496 case 0xea: /* ljmp im */
3497 {
3498 unsigned int selector, offset;
3499
3500 ot = dflag ? OT_LONG : OT_WORD;
3501 offset = insn_get(s, ot);
3502 selector = insn_get(s, OT_WORD);
3503
3504 gen_op_movl_T0_im(selector);
3505 gen_op_movl_T1_im(offset);
3506 }
3507 goto do_ljmp;
3508 case 0xeb: /* jmp Jb */
3509 val = (int8_t)insn_get(s, OT_BYTE);
3510 val += s->pc - s->cs_base;
3511 if (s->dflag == 0)
3512 val = val & 0xffff;
3513 gen_jmp(s, val);
3514 break;
3515 case 0x70 ... 0x7f: /* jcc Jb */
3516 val = (int8_t)insn_get(s, OT_BYTE);
3517 goto do_jcc;
3518 case 0x180 ... 0x18f: /* jcc Jv */
3519 if (dflag) {
3520 val = insn_get(s, OT_LONG);
3521 } else {
3522 val = (int16_t)insn_get(s, OT_WORD);
3523 }
3524 do_jcc:
3525 next_eip = s->pc - s->cs_base;
3526 val += next_eip;
3527 if (s->dflag == 0)
3528 val &= 0xffff;
3529 gen_jcc(s, b, val, next_eip);
3530 break;
3531
3532 case 0x190 ... 0x19f: /* setcc Gv */
61382a50 3533 modrm = ldub_code(s->pc++);
2c0262af
FB		 3534 gen_setcc(s, b);
3535 gen_ldst_modrm(s, modrm, OT_BYTE, OR_TMP0, 1);
3536 break;
3537 case 0x140 ... 0x14f: /* cmov Gv, Ev */
3538 ot = dflag ? OT_LONG : OT_WORD;
61382a50 3539 modrm = ldub_code(s->pc++);
2c0262af
FB		 3540 reg = (modrm >> 3) & 7;
3541 mod = (modrm >> 6) & 3;
3542 gen_setcc(s, b);
3543 if (mod != 3) {
3544 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
3545 gen_op_ld_T1_A0[ot + s->mem_index]();
3546 } else {
3547 rm = modrm & 7;
3548 gen_op_mov_TN_reg[ot][1][rm]();
3549 }
3550 gen_op_cmov_reg_T1_T0[ot - OT_WORD][reg]();
3551 break;
3552
3553 /************************/
3554 /* flags */
3555 case 0x9c: /* pushf */
3556 if (s->vm86 && s->iopl != 3) {
3557 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3558 } else {
3559 if (s->cc_op != CC_OP_DYNAMIC)
3560 gen_op_set_cc_op(s->cc_op);
3561 gen_op_movl_T0_eflags();
3562 gen_push_T0(s);
3563 }
3564 break;
3565 case 0x9d: /* popf */
3566 if (s->vm86 && s->iopl != 3) {
3567 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3568 } else {
3569 gen_pop_T0(s);
3570 if (s->cpl == 0) {
3571 if (s->dflag) {
3572 gen_op_movl_eflags_T0_cpl0();
3573 } else {
3574 gen_op_movw_eflags_T0_cpl0();
3575 }
3576 } else {
4136f33c
FB		 3577 if (s->cpl <= s->iopl) {
3578 if (s->dflag) {
3579 gen_op_movl_eflags_T0_io();
3580 } else {
3581 gen_op_movw_eflags_T0_io();
3582 }
2c0262af 3583 } else {
4136f33c
FB		 3584 if (s->dflag) {
3585 gen_op_movl_eflags_T0();
3586 } else {
3587 gen_op_movw_eflags_T0();
3588 }
2c0262af
FB		 3589 }
3590 }
3591 gen_pop_update(s);
3592 s->cc_op = CC_OP_EFLAGS;
3593 /* abort translation because TF flag may change */
3594 gen_op_jmp_im(s->pc - s->cs_base);
3595 gen_eob(s);
3596 }
3597 break;
3598 case 0x9e: /* sahf */
3599 gen_op_mov_TN_reg[OT_BYTE][0][R_AH]();
3600 if (s->cc_op != CC_OP_DYNAMIC)
3601 gen_op_set_cc_op(s->cc_op);
3602 gen_op_movb_eflags_T0();
3603 s->cc_op = CC_OP_EFLAGS;
3604 break;
3605 case 0x9f: /* lahf */
3606 if (s->cc_op != CC_OP_DYNAMIC)
3607 gen_op_set_cc_op(s->cc_op);
3608 gen_op_movl_T0_eflags();
3609 gen_op_mov_reg_T0[OT_BYTE][R_AH]();
3610 break;
3611 case 0xf5: /* cmc */
3612 if (s->cc_op != CC_OP_DYNAMIC)
3613 gen_op_set_cc_op(s->cc_op);
3614 gen_op_cmc();
3615 s->cc_op = CC_OP_EFLAGS;
3616 break;
3617 case 0xf8: /* clc */
3618 if (s->cc_op != CC_OP_DYNAMIC)
3619 gen_op_set_cc_op(s->cc_op);
3620 gen_op_clc();
3621 s->cc_op = CC_OP_EFLAGS;
3622 break;
3623 case 0xf9: /* stc */
3624 if (s->cc_op != CC_OP_DYNAMIC)
3625 gen_op_set_cc_op(s->cc_op);
3626 gen_op_stc();
3627 s->cc_op = CC_OP_EFLAGS;
3628 break;
3629 case 0xfc: /* cld */
3630 gen_op_cld();
3631 break;
3632 case 0xfd: /* std */
3633 gen_op_std();
3634 break;
3635
3636 /************************/
3637 /* bit operations */
3638 case 0x1ba: /* bt/bts/btr/btc Gv, im */
3639 ot = dflag ? OT_LONG : OT_WORD;
61382a50 3640 modrm = ldub_code(s->pc++);
2c0262af
FB		 3641 op = (modrm >> 3) & 7;
3642 mod = (modrm >> 6) & 3;
3643 rm = modrm & 7;
3644 if (mod != 3) {
3645 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
3646 gen_op_ld_T0_A0[ot + s->mem_index]();
3647 } else {
3648 gen_op_mov_TN_reg[ot][0][rm]();
3649 }
3650 /* load shift */
61382a50 3651 val = ldub_code(s->pc++);
2c0262af
FB		 3652 gen_op_movl_T1_im(val);
3653 if (op < 4)
3654 goto illegal_op;
3655 op -= 4;
3656 gen_op_btx_T0_T1_cc[ot - OT_WORD][op]();
3657 s->cc_op = CC_OP_SARB + ot;
3658 if (op != 0) {
3659 if (mod != 3)
3660 gen_op_st_T0_A0[ot + s->mem_index]();
3661 else
3662 gen_op_mov_reg_T0[ot][rm]();
3663 gen_op_update_bt_cc();
3664 }
3665 break;
3666 case 0x1a3: /* bt Gv, Ev */
3667 op = 0;
3668 goto do_btx;
3669 case 0x1ab: /* bts */
3670 op = 1;
3671 goto do_btx;
3672 case 0x1b3: /* btr */
3673 op = 2;
3674 goto do_btx;
3675 case 0x1bb: /* btc */
3676 op = 3;
3677 do_btx:
3678 ot = dflag ? OT_LONG : OT_WORD;
61382a50 3679 modrm = ldub_code(s->pc++);
2c0262af
FB		 3680 reg = (modrm >> 3) & 7;
3681 mod = (modrm >> 6) & 3;
3682 rm = modrm & 7;
3683 gen_op_mov_TN_reg[OT_LONG][1][reg]();
3684 if (mod != 3) {
3685 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
3686 /* specific case: we need to add a displacement */
3687 if (ot == OT_WORD)
3688 gen_op_add_bitw_A0_T1();
3689 else
3690 gen_op_add_bitl_A0_T1();
3691 gen_op_ld_T0_A0[ot + s->mem_index]();
3692 } else {
3693 gen_op_mov_TN_reg[ot][0][rm]();
3694 }
3695 gen_op_btx_T0_T1_cc[ot - OT_WORD][op]();
3696 s->cc_op = CC_OP_SARB + ot;
3697 if (op != 0) {
3698 if (mod != 3)
3699 gen_op_st_T0_A0[ot + s->mem_index]();
3700 else
3701 gen_op_mov_reg_T0[ot][rm]();
3702 gen_op_update_bt_cc();
3703 }
3704 break;
3705 case 0x1bc: /* bsf */
3706 case 0x1bd: /* bsr */
3707 ot = dflag ? OT_LONG : OT_WORD;
61382a50 3708 modrm = ldub_code(s->pc++);
2c0262af
FB		 3709 reg = (modrm >> 3) & 7;
3710 gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
686f3f26
FB		 3711 /* NOTE: in order to handle the 0 case, we must load the
3712 result. It could be optimized with a generated jump */
3713 gen_op_mov_TN_reg[ot][1][reg]();
2c0262af 3714 gen_op_bsx_T0_cc[ot - OT_WORD][b & 1]();
686f3f26 3715 gen_op_mov_reg_T1[ot][reg]();
2c0262af
FB		 3716 s->cc_op = CC_OP_LOGICB + ot;
3717 break;
3718 /************************/
3719 /* bcd */
3720 case 0x27: /* daa */
3721 if (s->cc_op != CC_OP_DYNAMIC)
3722 gen_op_set_cc_op(s->cc_op);
3723 gen_op_daa();
3724 s->cc_op = CC_OP_EFLAGS;
3725 break;
3726 case 0x2f: /* das */
3727 if (s->cc_op != CC_OP_DYNAMIC)
3728 gen_op_set_cc_op(s->cc_op);
3729 gen_op_das();
3730 s->cc_op = CC_OP_EFLAGS;
3731 break;
3732 case 0x37: /* aaa */
3733 if (s->cc_op != CC_OP_DYNAMIC)
3734 gen_op_set_cc_op(s->cc_op);
3735 gen_op_aaa();
3736 s->cc_op = CC_OP_EFLAGS;
3737 break;
3738 case 0x3f: /* aas */
3739 if (s->cc_op != CC_OP_DYNAMIC)
3740 gen_op_set_cc_op(s->cc_op);
3741 gen_op_aas();
3742 s->cc_op = CC_OP_EFLAGS;
3743 break;
3744 case 0xd4: /* aam */
61382a50 3745 val = ldub_code(s->pc++);
2c0262af
FB		 3746 gen_op_aam(val);
3747 s->cc_op = CC_OP_LOGICB;
3748 break;
3749 case 0xd5: /* aad */
61382a50 3750 val = ldub_code(s->pc++);
2c0262af
FB		 3751 gen_op_aad(val);
3752 s->cc_op = CC_OP_LOGICB;
3753 break;
3754 /************************/
3755 /* misc */
3756 case 0x90: /* nop */
ab1f142b
FB		 3757 /* XXX: correct lock test for all insn */
3758 if (prefixes & PREFIX_LOCK)
3759 goto illegal_op;
2c0262af
FB		 3760 break;
3761 case 0x9b: /* fwait */
7eee2a50
FB		 3762 if ((s->flags & (HF_MP_MASK | HF_TS_MASK)) ==
3763 (HF_MP_MASK | HF_TS_MASK)) {
3764 gen_exception(s, EXCP07_PREX, pc_start - s->cs_base);
2ee73ac3
FB		 3765 } else {
3766 if (s->cc_op != CC_OP_DYNAMIC)
3767 gen_op_set_cc_op(s->cc_op);
3768 gen_op_jmp_im(pc_start - s->cs_base);
3769 gen_op_fwait();
7eee2a50 3770 }
2c0262af
FB		 3771 break;
3772 case 0xcc: /* int3 */
3773 gen_interrupt(s, EXCP03_INT3, pc_start - s->cs_base, s->pc - s->cs_base);
3774 break;
3775 case 0xcd: /* int N */
61382a50 3776 val = ldub_code(s->pc++);
f115e911 3777 if (s->vm86 && s->iopl != 3) {
2c0262af 3778 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
f115e911
FB		 3779 } else {
3780 gen_interrupt(s, val, pc_start - s->cs_base, s->pc - s->cs_base);
3781 }
2c0262af
FB		 3782 break;
3783 case 0xce: /* into */
3784 if (s->cc_op != CC_OP_DYNAMIC)
3785 gen_op_set_cc_op(s->cc_op);
3786 gen_op_into(s->pc - s->cs_base);
3787 break;
3788 case 0xf1: /* icebp (undocumented, exits to external debugger) */
3789 gen_debug(s, pc_start - s->cs_base);
3790 break;
3791 case 0xfa: /* cli */
3792 if (!s->vm86) {
3793 if (s->cpl <= s->iopl) {
3794 gen_op_cli();
3795 } else {
3796 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3797 }
3798 } else {
3799 if (s->iopl == 3) {
3800 gen_op_cli();
3801 } else {
3802 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3803 }
3804 }
3805 break;
3806 case 0xfb: /* sti */
3807 if (!s->vm86) {
3808 if (s->cpl <= s->iopl) {
3809 gen_sti:
3810 gen_op_sti();
3811 /* interruptions are enabled only the first insn after sti */
a2cc3b24
FB		 3812 /* If several instructions disable interrupts, only the
3813 _first_ does it */
3814 if (!(s->tb->flags & HF_INHIBIT_IRQ_MASK))
3815 gen_op_set_inhibit_irq();
2c0262af
FB		 3816 /* give a chance to handle pending irqs */
3817 gen_op_jmp_im(s->pc - s->cs_base);
3818 gen_eob(s);
3819 } else {
3820 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3821 }
3822 } else {
3823 if (s->iopl == 3) {
3824 goto gen_sti;
3825 } else {
3826 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3827 }
3828 }
3829 break;
3830 case 0x62: /* bound */
3831 ot = dflag ? OT_LONG : OT_WORD;
61382a50 3832 modrm = ldub_code(s->pc++);
2c0262af
FB		 3833 reg = (modrm >> 3) & 7;
3834 mod = (modrm >> 6) & 3;
3835 if (mod == 3)
3836 goto illegal_op;
3837 gen_op_mov_reg_T0[ot][reg]();
3838 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
3839 if (ot == OT_WORD)
3840 gen_op_boundw(pc_start - s->cs_base);
3841 else
3842 gen_op_boundl(pc_start - s->cs_base);
3843 break;
3844 case 0x1c8 ... 0x1cf: /* bswap reg */
3845 reg = b & 7;
3846 gen_op_mov_TN_reg[OT_LONG][0][reg]();
3847 gen_op_bswapl_T0();
3848 gen_op_mov_reg_T0[OT_LONG][reg]();
3849 break;
3850 case 0xd6: /* salc */
3851 if (s->cc_op != CC_OP_DYNAMIC)
3852 gen_op_set_cc_op(s->cc_op);
3853 gen_op_salc();
3854 break;
3855 case 0xe0: /* loopnz */
3856 case 0xe1: /* loopz */
3857 if (s->cc_op != CC_OP_DYNAMIC)
3858 gen_op_set_cc_op(s->cc_op);
3859 /* FALL THRU */
3860 case 0xe2: /* loop */
3861 case 0xe3: /* jecxz */
3862 val = (int8_t)insn_get(s, OT_BYTE);
3863 next_eip = s->pc - s->cs_base;
3864 val += next_eip;
3865 if (s->dflag == 0)
3866 val &= 0xffff;
3867 gen_op_loop[s->aflag][b & 3](val, next_eip);
3868 gen_eob(s);
3869 break;
3870 case 0x130: /* wrmsr */
3871 case 0x132: /* rdmsr */
3872 if (s->cpl != 0) {
3873 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3874 } else {
3875 if (b & 2)
3876 gen_op_rdmsr();
3877 else
3878 gen_op_wrmsr();
3879 }
3880 break;
3881 case 0x131: /* rdtsc */
3882 gen_op_rdtsc();
3883 break;
3884 case 0x1a2: /* cpuid */
3885 gen_op_cpuid();
3886 break;
3887 case 0xf4: /* hlt */
3888 if (s->cpl != 0) {
3889 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3890 } else {
3891 if (s->cc_op != CC_OP_DYNAMIC)
3892 gen_op_set_cc_op(s->cc_op);
3893 gen_op_jmp_im(s->pc - s->cs_base);
3894 gen_op_hlt();
3895 s->is_jmp = 3;
3896 }
3897 break;
3898 case 0x100:
61382a50 3899 modrm = ldub_code(s->pc++);
2c0262af
FB		 3900 mod = (modrm >> 6) & 3;
3901 op = (modrm >> 3) & 7;
3902 switch(op) {
3903 case 0: /* sldt */
f115e911
FB		 3904 if (!s->pe || s->vm86)
3905 goto illegal_op;
2c0262af
FB		 3906 gen_op_movl_T0_env(offsetof(CPUX86State,ldt.selector));
3907 ot = OT_WORD;
3908 if (mod == 3)
3909 ot += s->dflag;
3910 gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
3911 break;
3912 case 2: /* lldt */
f115e911
FB		 3913 if (!s->pe || s->vm86)
3914 goto illegal_op;
2c0262af
FB		 3915 if (s->cpl != 0) {
3916 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3917 } else {
3918 gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
3919 gen_op_jmp_im(pc_start - s->cs_base);
3920 gen_op_lldt_T0();
3921 }
3922 break;
3923 case 1: /* str */
f115e911
FB		 3924 if (!s->pe || s->vm86)
3925 goto illegal_op;
2c0262af
FB		 3926 gen_op_movl_T0_env(offsetof(CPUX86State,tr.selector));
3927 ot = OT_WORD;
3928 if (mod == 3)
3929 ot += s->dflag;
3930 gen_ldst_modrm(s, modrm, ot, OR_TMP0, 1);
3931 break;
3932 case 3: /* ltr */
f115e911
FB		 3933 if (!s->pe || s->vm86)
3934 goto illegal_op;
2c0262af
FB		 3935 if (s->cpl != 0) {
3936 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3937 } else {
3938 gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
3939 gen_op_jmp_im(pc_start - s->cs_base);
3940 gen_op_ltr_T0();
3941 }
3942 break;
3943 case 4: /* verr */
3944 case 5: /* verw */
f115e911
FB		 3945 if (!s->pe || s->vm86)
3946 goto illegal_op;
3947 gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
3948 if (s->cc_op != CC_OP_DYNAMIC)
3949 gen_op_set_cc_op(s->cc_op);
3950 if (op == 4)
3951 gen_op_verr();
3952 else
3953 gen_op_verw();
3954 s->cc_op = CC_OP_EFLAGS;
3955 break;
2c0262af
FB		 3956 default:
3957 goto illegal_op;
3958 }
3959 break;
3960 case 0x101:
61382a50 3961 modrm = ldub_code(s->pc++);
2c0262af
FB		 3962 mod = (modrm >> 6) & 3;
3963 op = (modrm >> 3) & 7;
3964 switch(op) {
3965 case 0: /* sgdt */
3966 case 1: /* sidt */
3967 if (mod == 3)
3968 goto illegal_op;
3969 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
3970 if (op == 0)
3971 gen_op_movl_T0_env(offsetof(CPUX86State,gdt.limit));
3972 else
3973 gen_op_movl_T0_env(offsetof(CPUX86State,idt.limit));
3974 gen_op_st_T0_A0[OT_WORD + s->mem_index]();
3975 gen_op_addl_A0_im(2);
3976 if (op == 0)
3977 gen_op_movl_T0_env(offsetof(CPUX86State,gdt.base));
3978 else
3979 gen_op_movl_T0_env(offsetof(CPUX86State,idt.base));
3980 if (!s->dflag)
3981 gen_op_andl_T0_im(0xffffff);
3982 gen_op_st_T0_A0[OT_LONG + s->mem_index]();
3983 break;
3984 case 2: /* lgdt */
3985 case 3: /* lidt */
3986 if (mod == 3)
3987 goto illegal_op;
3988 if (s->cpl != 0) {
3989 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
3990 } else {
3991 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
3992 gen_op_ld_T1_A0[OT_WORD + s->mem_index]();
3993 gen_op_addl_A0_im(2);
3994 gen_op_ld_T0_A0[OT_LONG + s->mem_index]();
3995 if (!s->dflag)
3996 gen_op_andl_T0_im(0xffffff);
3997 if (op == 2) {
3998 gen_op_movl_env_T0(offsetof(CPUX86State,gdt.base));
3999 gen_op_movl_env_T1(offsetof(CPUX86State,gdt.limit));
4000 } else {
4001 gen_op_movl_env_T0(offsetof(CPUX86State,idt.base));
4002 gen_op_movl_env_T1(offsetof(CPUX86State,idt.limit));
4003 }
4004 }
4005 break;
4006 case 4: /* smsw */
4007 gen_op_movl_T0_env(offsetof(CPUX86State,cr[0]));
4008 gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 1);
4009 break;
4010 case 6: /* lmsw */
4011 if (s->cpl != 0) {
4012 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
4013 } else {
4014 gen_ldst_modrm(s, modrm, OT_WORD, OR_TMP0, 0);
4015 gen_op_lmsw_T0();
d71b9a8b
FB		 4016 gen_op_jmp_im(s->pc - s->cs_base);
4017 gen_eob(s);
2c0262af
FB		 4018 }
4019 break;
4020 case 7: /* invlpg */
4021 if (s->cpl != 0) {
4022 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
4023 } else {
4024 if (mod == 3)
4025 goto illegal_op;
4026 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
4027 gen_op_invlpg_A0();
3415a4dd
FB		 4028 gen_op_jmp_im(s->pc - s->cs_base);
4029 gen_eob(s);
2c0262af
FB		 4030 }
4031 break;
4032 default:
4033 goto illegal_op;
4034 }
4035 break;
3415a4dd
FB		 4036 case 0x108: /* invd */
4037 case 0x109: /* wbinvd */
4038 if (s->cpl != 0) {
4039 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
4040 } else {
4041 /* nothing to do */
4042 }
4043 break;
f115e911
FB		 4044 case 0x63: /* arpl */
4045 if (!s->pe || s->vm86)
4046 goto illegal_op;
4047 ot = dflag ? OT_LONG : OT_WORD;
4048 modrm = ldub_code(s->pc++);
4049 reg = (modrm >> 3) & 7;
4050 mod = (modrm >> 6) & 3;
4051 rm = modrm & 7;
4052 if (mod != 3) {
4053 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
4054 gen_op_ld_T0_A0[ot + s->mem_index]();
4055 } else {
4056 gen_op_mov_TN_reg[ot][0][rm]();
4057 }
4058 if (s->cc_op != CC_OP_DYNAMIC)
4059 gen_op_set_cc_op(s->cc_op);
4060 gen_op_arpl();
4061 s->cc_op = CC_OP_EFLAGS;
4062 if (mod != 3) {
4063 gen_op_st_T0_A0[ot + s->mem_index]();
4064 } else {
4065 gen_op_mov_reg_T0[ot][rm]();
4066 }
4067 gen_op_arpl_update();
4068 break;
2c0262af
FB		 4069 case 0x102: /* lar */
4070 case 0x103: /* lsl */
4071 if (!s->pe || s->vm86)
4072 goto illegal_op;
4073 ot = dflag ? OT_LONG : OT_WORD;
61382a50 4074 modrm = ldub_code(s->pc++);
2c0262af
FB		 4075 reg = (modrm >> 3) & 7;
4076 gen_ldst_modrm(s, modrm, ot, OR_TMP0, 0);
4077 gen_op_mov_TN_reg[ot][1][reg]();
4078 if (s->cc_op != CC_OP_DYNAMIC)
4079 gen_op_set_cc_op(s->cc_op);
4080 if (b == 0x102)
4081 gen_op_lar();
4082 else
4083 gen_op_lsl();
4084 s->cc_op = CC_OP_EFLAGS;
4085 gen_op_mov_reg_T1[ot][reg]();
4086 break;
4087 case 0x118:
61382a50 4088 modrm = ldub_code(s->pc++);
2c0262af
FB		 4089 mod = (modrm >> 6) & 3;
4090 op = (modrm >> 3) & 7;
4091 switch(op) {
4092 case 0: /* prefetchnta */
4093 case 1: /* prefetchnt0 */
4094 case 2: /* prefetchnt0 */
4095 case 3: /* prefetchnt0 */
4096 if (mod == 3)
4097 goto illegal_op;
4098 gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);
4099 /* nothing more to do */
4100 break;
4101 default:
4102 goto illegal_op;
4103 }
4104 break;
4105 case 0x120: /* mov reg, crN */
4106 case 0x122: /* mov crN, reg */
4107 if (s->cpl != 0) {
4108 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
4109 } else {
61382a50 4110 modrm = ldub_code(s->pc++);
2c0262af
FB		 4111 if ((modrm & 0xc0) != 0xc0)
4112 goto illegal_op;
4113 rm = modrm & 7;
4114 reg = (modrm >> 3) & 7;
4115 switch(reg) {
4116 case 0:
4117 case 2:
4118 case 3:
4119 case 4:
4120 if (b & 2) {
4121 gen_op_mov_TN_reg[OT_LONG][0][rm]();
4122 gen_op_movl_crN_T0(reg);
4123 gen_op_jmp_im(s->pc - s->cs_base);
4124 gen_eob(s);
4125 } else {
4126 gen_op_movl_T0_env(offsetof(CPUX86State,cr[reg]));
4127 gen_op_mov_reg_T0[OT_LONG][rm]();
4128 }
4129 break;
4130 default:
4131 goto illegal_op;
4132 }
4133 }
4134 break;
4135 case 0x121: /* mov reg, drN */
4136 case 0x123: /* mov drN, reg */
4137 if (s->cpl != 0) {
4138 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
4139 } else {
61382a50 4140 modrm = ldub_code(s->pc++);
2c0262af
FB		 4141 if ((modrm & 0xc0) != 0xc0)
4142 goto illegal_op;
4143 rm = modrm & 7;
4144 reg = (modrm >> 3) & 7;
4145 /* XXX: do it dynamically with CR4.DE bit */
4146 if (reg == 4 || reg == 5)
4147 goto illegal_op;
4148 if (b & 2) {
4149 gen_op_mov_TN_reg[OT_LONG][0][rm]();
4150 gen_op_movl_drN_T0(reg);
4151 gen_op_jmp_im(s->pc - s->cs_base);
4152 gen_eob(s);
4153 } else {
4154 gen_op_movl_T0_env(offsetof(CPUX86State,dr[reg]));
4155 gen_op_mov_reg_T0[OT_LONG][rm]();
4156 }
4157 }
4158 break;
4159 case 0x106: /* clts */
4160 if (s->cpl != 0) {
4161 gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base);
4162 } else {
4163 gen_op_clts();
7eee2a50
FB		 4164 /* abort block because static cpu state changed */
4165 gen_op_jmp_im(s->pc - s->cs_base);
4166 gen_eob(s);
2c0262af
FB		 4167 }
4168 break;
4169 default:
4170 goto illegal_op;
4171 }
4172 /* lock generation */
4173 if (s->prefix & PREFIX_LOCK)
4174 gen_op_unlock();
4175 return s->pc;
4176 illegal_op:
ab1f142b
FB		 4177 if (s->prefix & PREFIX_LOCK)
4178 gen_op_unlock();
2c0262af
FB		 4179 /* XXX: ensure that no lock was generated */
4180 gen_exception(s, EXCP06_ILLOP, pc_start - s->cs_base);
4181 return s->pc;
4182}
4183
4184#define CC_OSZAPC (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C)
4185#define CC_OSZAP (CC_O | CC_S | CC_Z | CC_A | CC_P)
4186
4187/* flags read by an operation */
4188static uint16_t opc_read_flags[NB_OPS] = {
4189 [INDEX_op_aas] = CC_A,
4190 [INDEX_op_aaa] = CC_A,
4191 [INDEX_op_das] = CC_A | CC_C,
4192 [INDEX_op_daa] = CC_A | CC_C,
4193
2c0262af
FB		 4194 /* subtle: due to the incl/decl implementation, C is used */
4195 [INDEX_op_update_inc_cc] = CC_C,
4196
4197 [INDEX_op_into] = CC_O,
4198
4199 [INDEX_op_jb_subb] = CC_C,
4200 [INDEX_op_jb_subw] = CC_C,
4201 [INDEX_op_jb_subl] = CC_C,
4202
4203 [INDEX_op_jz_subb] = CC_Z,
4204 [INDEX_op_jz_subw] = CC_Z,
4205 [INDEX_op_jz_subl] = CC_Z,
4206
4207 [INDEX_op_jbe_subb] = CC_Z | CC_C,
4208 [INDEX_op_jbe_subw] = CC_Z | CC_C,
4209 [INDEX_op_jbe_subl] = CC_Z | CC_C,
4210
4211 [INDEX_op_js_subb] = CC_S,
4212 [INDEX_op_js_subw] = CC_S,
4213 [INDEX_op_js_subl] = CC_S,
4214
4215 [INDEX_op_jl_subb] = CC_O | CC_S,
4216 [INDEX_op_jl_subw] = CC_O | CC_S,
4217 [INDEX_op_jl_subl] = CC_O | CC_S,
4218
4219 [INDEX_op_jle_subb] = CC_O | CC_S | CC_Z,
4220 [INDEX_op_jle_subw] = CC_O | CC_S | CC_Z,
4221 [INDEX_op_jle_subl] = CC_O | CC_S | CC_Z,
4222
4223 [INDEX_op_loopnzw] = CC_Z,
4224 [INDEX_op_loopnzl] = CC_Z,
4225 [INDEX_op_loopzw] = CC_Z,
4226 [INDEX_op_loopzl] = CC_Z,
4227
4228 [INDEX_op_seto_T0_cc] = CC_O,
4229 [INDEX_op_setb_T0_cc] = CC_C,
4230 [INDEX_op_setz_T0_cc] = CC_Z,
4231 [INDEX_op_setbe_T0_cc] = CC_Z | CC_C,
4232 [INDEX_op_sets_T0_cc] = CC_S,
4233 [INDEX_op_setp_T0_cc] = CC_P,
4234 [INDEX_op_setl_T0_cc] = CC_O | CC_S,
4235 [INDEX_op_setle_T0_cc] = CC_O | CC_S | CC_Z,
4236
4237 [INDEX_op_setb_T0_subb] = CC_C,
4238 [INDEX_op_setb_T0_subw] = CC_C,
4239 [INDEX_op_setb_T0_subl] = CC_C,
4240
4241 [INDEX_op_setz_T0_subb] = CC_Z,
4242 [INDEX_op_setz_T0_subw] = CC_Z,
4243 [INDEX_op_setz_T0_subl] = CC_Z,
4244
4245 [INDEX_op_setbe_T0_subb] = CC_Z | CC_C,
4246 [INDEX_op_setbe_T0_subw] = CC_Z | CC_C,
4247 [INDEX_op_setbe_T0_subl] = CC_Z | CC_C,
4248
4249 [INDEX_op_sets_T0_subb] = CC_S,
4250 [INDEX_op_sets_T0_subw] = CC_S,
4251 [INDEX_op_sets_T0_subl] = CC_S,
4252
4253 [INDEX_op_setl_T0_subb] = CC_O | CC_S,
4254 [INDEX_op_setl_T0_subw] = CC_O | CC_S,
4255 [INDEX_op_setl_T0_subl] = CC_O | CC_S,
4256
4257 [INDEX_op_setle_T0_subb] = CC_O | CC_S | CC_Z,
4258 [INDEX_op_setle_T0_subw] = CC_O | CC_S | CC_Z,
4259 [INDEX_op_setle_T0_subl] = CC_O | CC_S | CC_Z,
4260
4261 [INDEX_op_movl_T0_eflags] = CC_OSZAPC,
4262 [INDEX_op_cmc] = CC_C,
4263 [INDEX_op_salc] = CC_C,
4264
7399c5a9
FB		 4265 /* needed for correct flag optimisation before string ops */
4266 [INDEX_op_jz_ecxw] = CC_OSZAPC,
4267 [INDEX_op_jz_ecxl] = CC_OSZAPC,
4268 [INDEX_op_jz_ecxw_im] = CC_OSZAPC,
4269 [INDEX_op_jz_ecxl_im] = CC_OSZAPC,
4270
4f31916f
FB		 4271#define DEF_READF(SUFFIX)\
4272 [INDEX_op_adcb ## SUFFIX ## _T0_T1_cc] = CC_C,\
4273 [INDEX_op_adcw ## SUFFIX ## _T0_T1_cc] = CC_C,\
4274 [INDEX_op_adcl ## SUFFIX ## _T0_T1_cc] = CC_C,\
4275 [INDEX_op_sbbb ## SUFFIX ## _T0_T1_cc] = CC_C,\
4276 [INDEX_op_sbbw ## SUFFIX ## _T0_T1_cc] = CC_C,\
4277 [INDEX_op_sbbl ## SUFFIX ## _T0_T1_cc] = CC_C,\
4278\
4279 [INDEX_op_rclb ## SUFFIX ## _T0_T1_cc] = CC_C,\
4280 [INDEX_op_rclw ## SUFFIX ## _T0_T1_cc] = CC_C,\
4281 [INDEX_op_rcll ## SUFFIX ## _T0_T1_cc] = CC_C,\
4282 [INDEX_op_rcrb ## SUFFIX ## _T0_T1_cc] = CC_C,\
4283 [INDEX_op_rcrw ## SUFFIX ## _T0_T1_cc] = CC_C,\
4284 [INDEX_op_rcrl ## SUFFIX ## _T0_T1_cc] = CC_C,
4285
4286
4bb2fcc7 4287 DEF_READF( )
4f31916f
FB		 4288 DEF_READF(_raw)
4289#ifndef CONFIG_USER_ONLY
4290 DEF_READF(_kernel)
4291 DEF_READF(_user)
4292#endif
2c0262af
FB		 4293};
4294
4295/* flags written by an operation */
4296static uint16_t opc_write_flags[NB_OPS] = {
4297 [INDEX_op_update2_cc] = CC_OSZAPC,
4298 [INDEX_op_update1_cc] = CC_OSZAPC,
4299 [INDEX_op_cmpl_T0_T1_cc] = CC_OSZAPC,
4300 [INDEX_op_update_neg_cc] = CC_OSZAPC,
4301 /* subtle: due to the incl/decl implementation, C is used */
4302 [INDEX_op_update_inc_cc] = CC_OSZAPC,
4303 [INDEX_op_testl_T0_T1_cc] = CC_OSZAPC,
4304
2c0262af
FB		 4305 [INDEX_op_mulb_AL_T0] = CC_OSZAPC,
4306 [INDEX_op_imulb_AL_T0] = CC_OSZAPC,
4307 [INDEX_op_mulw_AX_T0] = CC_OSZAPC,
4308 [INDEX_op_imulw_AX_T0] = CC_OSZAPC,
4309 [INDEX_op_mull_EAX_T0] = CC_OSZAPC,
4310 [INDEX_op_imull_EAX_T0] = CC_OSZAPC,
4311 [INDEX_op_imulw_T0_T1] = CC_OSZAPC,
4312 [INDEX_op_imull_T0_T1] = CC_OSZAPC,
4313
4314 /* bcd */
4315 [INDEX_op_aam] = CC_OSZAPC,
4316 [INDEX_op_aad] = CC_OSZAPC,
4317 [INDEX_op_aas] = CC_OSZAPC,
4318 [INDEX_op_aaa] = CC_OSZAPC,
4319 [INDEX_op_das] = CC_OSZAPC,
4320 [INDEX_op_daa] = CC_OSZAPC,
4321
4322 [INDEX_op_movb_eflags_T0] = CC_S | CC_Z | CC_A | CC_P | CC_C,
4323 [INDEX_op_movw_eflags_T0] = CC_OSZAPC,
4324 [INDEX_op_movl_eflags_T0] = CC_OSZAPC,
4136f33c
FB		 4325 [INDEX_op_movw_eflags_T0_io] = CC_OSZAPC,
4326 [INDEX_op_movl_eflags_T0_io] = CC_OSZAPC,
4327 [INDEX_op_movw_eflags_T0_cpl0] = CC_OSZAPC,
4328 [INDEX_op_movl_eflags_T0_cpl0] = CC_OSZAPC,
2c0262af
FB		 4329 [INDEX_op_clc] = CC_C,
4330 [INDEX_op_stc] = CC_C,
4331 [INDEX_op_cmc] = CC_C,
4332
2c0262af
FB		 4333 [INDEX_op_btw_T0_T1_cc] = CC_OSZAPC,
4334 [INDEX_op_btl_T0_T1_cc] = CC_OSZAPC,
4335 [INDEX_op_btsw_T0_T1_cc] = CC_OSZAPC,
4336 [INDEX_op_btsl_T0_T1_cc] = CC_OSZAPC,
4337 [INDEX_op_btrw_T0_T1_cc] = CC_OSZAPC,
4338 [INDEX_op_btrl_T0_T1_cc] = CC_OSZAPC,
4339 [INDEX_op_btcw_T0_T1_cc] = CC_OSZAPC,
4340 [INDEX_op_btcl_T0_T1_cc] = CC_OSZAPC,
4341
4342 [INDEX_op_bsfw_T0_cc] = CC_OSZAPC,
4343 [INDEX_op_bsfl_T0_cc] = CC_OSZAPC,
4344 [INDEX_op_bsrw_T0_cc] = CC_OSZAPC,
4345 [INDEX_op_bsrl_T0_cc] = CC_OSZAPC,
4346
4347 [INDEX_op_cmpxchgb_T0_T1_EAX_cc] = CC_OSZAPC,
4348 [INDEX_op_cmpxchgw_T0_T1_EAX_cc] = CC_OSZAPC,
4349 [INDEX_op_cmpxchgl_T0_T1_EAX_cc] = CC_OSZAPC,
4350
2c0262af
FB		 4351 [INDEX_op_cmpxchg8b] = CC_Z,
4352 [INDEX_op_lar] = CC_Z,
4353 [INDEX_op_lsl] = CC_Z,
4354 [INDEX_op_fcomi_ST0_FT0] = CC_Z | CC_P | CC_C,
4355 [INDEX_op_fucomi_ST0_FT0] = CC_Z | CC_P | CC_C,
4f31916f
FB		 4356
4357#define DEF_WRITEF(SUFFIX)\
4358 [INDEX_op_adcb ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4359 [INDEX_op_adcw ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4360 [INDEX_op_adcl ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4361 [INDEX_op_sbbb ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4362 [INDEX_op_sbbw ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4363 [INDEX_op_sbbl ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4364\
4365 [INDEX_op_rolb ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4366 [INDEX_op_rolw ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4367 [INDEX_op_roll ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4368 [INDEX_op_rorb ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4369 [INDEX_op_rorw ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4370 [INDEX_op_rorl ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4371\
4372 [INDEX_op_rclb ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4373 [INDEX_op_rclw ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4374 [INDEX_op_rcll ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4375 [INDEX_op_rcrb ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4376 [INDEX_op_rcrw ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4377 [INDEX_op_rcrl ## SUFFIX ## _T0_T1_cc] = CC_O | CC_C,\
4378\
4379 [INDEX_op_shlb ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4380 [INDEX_op_shlw ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4381 [INDEX_op_shll ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4382\
4383 [INDEX_op_shrb ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4384 [INDEX_op_shrw ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4385 [INDEX_op_shrl ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4386\
4387 [INDEX_op_sarb ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4388 [INDEX_op_sarw ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4389 [INDEX_op_sarl ## SUFFIX ## _T0_T1_cc] = CC_OSZAPC,\
4390\
4391 [INDEX_op_shldw ## SUFFIX ## _T0_T1_ECX_cc] = CC_OSZAPC,\
4392 [INDEX_op_shldl ## SUFFIX ## _T0_T1_ECX_cc] = CC_OSZAPC,\
4393 [INDEX_op_shldw ## SUFFIX ## _T0_T1_im_cc] = CC_OSZAPC,\
4394 [INDEX_op_shldl ## SUFFIX ## _T0_T1_im_cc] = CC_OSZAPC,\
4395\
4396 [INDEX_op_shrdw ## SUFFIX ## _T0_T1_ECX_cc] = CC_OSZAPC,\
4397 [INDEX_op_shrdl ## SUFFIX ## _T0_T1_ECX_cc] = CC_OSZAPC,\
4398 [INDEX_op_shrdw ## SUFFIX ## _T0_T1_im_cc] = CC_OSZAPC,\
4399 [INDEX_op_shrdl ## SUFFIX ## _T0_T1_im_cc] = CC_OSZAPC,\
4400\
4401 [INDEX_op_cmpxchgb ## SUFFIX ## _T0_T1_EAX_cc] = CC_OSZAPC,\
4402 [INDEX_op_cmpxchgw ## SUFFIX ## _T0_T1_EAX_cc] = CC_OSZAPC,\
4403 [INDEX_op_cmpxchgl ## SUFFIX ## _T0_T1_EAX_cc] = CC_OSZAPC,
4404
4405
4bb2fcc7 4406 DEF_WRITEF( )
4f31916f
FB		 4407 DEF_WRITEF(_raw)
4408#ifndef CONFIG_USER_ONLY
4409 DEF_WRITEF(_kernel)
4410 DEF_WRITEF(_user)
4411#endif
2c0262af
FB		 4412};
4413
4414/* simpler form of an operation if no flags need to be generated */
4415static uint16_t opc_simpler[NB_OPS] = {
4416 [INDEX_op_update2_cc] = INDEX_op_nop,
4417 [INDEX_op_update1_cc] = INDEX_op_nop,
4418 [INDEX_op_update_neg_cc] = INDEX_op_nop,
4419#if 0
4420 /* broken: CC_OP logic must be rewritten */
4421 [INDEX_op_update_inc_cc] = INDEX_op_nop,
4422#endif
2c0262af
FB		 4423
4424 [INDEX_op_shlb_T0_T1_cc] = INDEX_op_shlb_T0_T1,
4425 [INDEX_op_shlw_T0_T1_cc] = INDEX_op_shlw_T0_T1,
4426 [INDEX_op_shll_T0_T1_cc] = INDEX_op_shll_T0_T1,
4427
4428 [INDEX_op_shrb_T0_T1_cc] = INDEX_op_shrb_T0_T1,
4429 [INDEX_op_shrw_T0_T1_cc] = INDEX_op_shrw_T0_T1,
4430 [INDEX_op_shrl_T0_T1_cc] = INDEX_op_shrl_T0_T1,
4431
4432 [INDEX_op_sarb_T0_T1_cc] = INDEX_op_sarb_T0_T1,
4433 [INDEX_op_sarw_T0_T1_cc] = INDEX_op_sarw_T0_T1,
4434 [INDEX_op_sarl_T0_T1_cc] = INDEX_op_sarl_T0_T1,
4f31916f
FB		 4435
4436#define DEF_SIMPLER(SUFFIX)\
4437 [INDEX_op_rolb ## SUFFIX ## _T0_T1_cc] = INDEX_op_rolb ## SUFFIX ## _T0_T1,\
4438 [INDEX_op_rolw ## SUFFIX ## _T0_T1_cc] = INDEX_op_rolw ## SUFFIX ## _T0_T1,\
4439 [INDEX_op_roll ## SUFFIX ## _T0_T1_cc] = INDEX_op_roll ## SUFFIX ## _T0_T1,\
4440\
4441 [INDEX_op_rorb ## SUFFIX ## _T0_T1_cc] = INDEX_op_rorb ## SUFFIX ## _T0_T1,\
4442 [INDEX_op_rorw ## SUFFIX ## _T0_T1_cc] = INDEX_op_rorw ## SUFFIX ## _T0_T1,\
4443 [INDEX_op_rorl ## SUFFIX ## _T0_T1_cc] = INDEX_op_rorl ## SUFFIX ## _T0_T1,
4444
4bb2fcc7 4445 DEF_SIMPLER( )
4f31916f
FB		 4446 DEF_SIMPLER(_raw)
4447#ifndef CONFIG_USER_ONLY
4448 DEF_SIMPLER(_kernel)
4449 DEF_SIMPLER(_user)
4450#endif
2c0262af
FB		 4451};
4452
4453void optimize_flags_init(void)
4454{
4455 int i;
4456 /* put default values in arrays */
4457 for(i = 0; i < NB_OPS; i++) {
4458 if (opc_simpler[i] == 0)
4459 opc_simpler[i] = i;
4460 }
4461}
4462
4463/* CPU flags computation optimization: we move backward thru the
4464 generated code to see which flags are needed. The operation is
4465 modified if suitable */
4466static void optimize_flags(uint16_t *opc_buf, int opc_buf_len)
4467{
4468 uint16_t *opc_ptr;
4469 int live_flags, write_flags, op;
4470
4471 opc_ptr = opc_buf + opc_buf_len;
4472 /* live_flags contains the flags needed by the next instructions
4473 in the code. At the end of the bloc, we consider that all the
4474 flags are live. */
4475 live_flags = CC_OSZAPC;
4476 while (opc_ptr > opc_buf) {
4477 op = *--opc_ptr;
4478 /* if none of the flags written by the instruction is used,
4479 then we can try to find a simpler instruction */
4480 write_flags = opc_write_flags[op];
4481 if ((live_flags & write_flags) == 0) {
4482 *opc_ptr = opc_simpler[op];
4483 }
4484 /* compute the live flags before the instruction */
4485 live_flags &= ~write_flags;
4486 live_flags |= opc_read_flags[op];
4487 }
4488}
4489
4490/* generate intermediate code in gen_opc_buf and gen_opparam_buf for
4491 basic block 'tb'. If search_pc is TRUE, also generate PC
4492 information for each intermediate instruction. */
4493static inline int gen_intermediate_code_internal(CPUState *env,
4494 TranslationBlock *tb,
4495 int search_pc)
4496{
4497 DisasContext dc1, *dc = &dc1;
4498 uint8_t *pc_ptr;
4499 uint16_t *gen_opc_end;
d720b93d 4500 int flags, j, lj, cflags;
2c0262af
FB		 4501 uint8_t *pc_start;
4502 uint8_t *cs_base;
4503
4504 /* generate intermediate code */
4505 pc_start = (uint8_t *)tb->pc;
4506 cs_base = (uint8_t *)tb->cs_base;
4507 flags = tb->flags;
d720b93d 4508 cflags = tb->cflags;
3a1d9b8b 4509
4f31916f 4510 dc->pe = (flags >> HF_PE_SHIFT) & 1;
2c0262af
FB		 4511 dc->code32 = (flags >> HF_CS32_SHIFT) & 1;
4512 dc->ss32 = (flags >> HF_SS32_SHIFT) & 1;
4513 dc->addseg = (flags >> HF_ADDSEG_SHIFT) & 1;
4514 dc->f_st = 0;
4515 dc->vm86 = (flags >> VM_SHIFT) & 1;
4516 dc->cpl = (flags >> HF_CPL_SHIFT) & 3;
4517 dc->iopl = (flags >> IOPL_SHIFT) & 3;
4518 dc->tf = (flags >> TF_SHIFT) & 1;
34865134 4519 dc->singlestep_enabled = env->singlestep_enabled;
2c0262af
FB		 4520 dc->cc_op = CC_OP_DYNAMIC;
4521 dc->cs_base = cs_base;
4522 dc->tb = tb;
4523 dc->popl_esp_hack = 0;
4524 /* select memory access functions */
4525 dc->mem_index = 0;
4526 if (flags & HF_SOFTMMU_MASK) {
4527 if (dc->cpl == 3)
4528 dc->mem_index = 6;
4529 else
4530 dc->mem_index = 3;
4531 }
7eee2a50 4532 dc->flags = flags;
a2cc3b24
FB		 4533 dc->jmp_opt = !(dc->tf || env->singlestep_enabled ||
4534 (flags & HF_INHIBIT_IRQ_MASK)
415fa2ea 4535#ifndef CONFIG_SOFTMMU
2c0262af
FB		 4536 || (flags & HF_SOFTMMU_MASK)
4537#endif
4538 );
4f31916f
FB		 4539#if 0
4540 /* check addseg logic */
4541 if (!dc->addseg && (dc->vm86 || !dc->pe))
4542 printf("ERROR addseg\n");
4543#endif
4544
2c0262af
FB		 4545 gen_opc_ptr = gen_opc_buf;
4546 gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
4547 gen_opparam_ptr = gen_opparam_buf;
4548
4549 dc->is_jmp = DISAS_NEXT;
4550 pc_ptr = pc_start;
4551 lj = -1;
4552
2c0262af
FB		 4553 for(;;) {
4554 if (env->nb_breakpoints > 0) {
4555 for(j = 0; j < env->nb_breakpoints; j++) {
4556 if (env->breakpoints[j] == (unsigned long)pc_ptr) {
4557 gen_debug(dc, pc_ptr - dc->cs_base);
4558 break;
4559 }
4560 }
4561 }
4562 if (search_pc) {
4563 j = gen_opc_ptr - gen_opc_buf;
4564 if (lj < j) {
4565 lj++;
4566 while (lj < j)
4567 gen_opc_instr_start[lj++] = 0;
4568 }
4569 gen_opc_pc[lj] = (uint32_t)pc_ptr;
4570 gen_opc_cc_op[lj] = dc->cc_op;
4571 gen_opc_instr_start[lj] = 1;
4572 }
4573 pc_ptr = disas_insn(dc, pc_ptr);
4574 /* stop translation if indicated */
4575 if (dc->is_jmp)
4576 break;
4577 /* if single step mode, we generate only one instruction and
4578 generate an exception */
a2cc3b24
FB		 4579 /* if irq were inhibited with HF_INHIBIT_IRQ_MASK, we clear
4580 the flag and abort the translation to give the irqs a
4581 change to be happen */
4582 if (dc->tf || dc->singlestep_enabled ||
d720b93d
FB		 4583 (flags & HF_INHIBIT_IRQ_MASK) ||
4584 (cflags & CF_SINGLE_INSN)) {
2c0262af
FB		 4585 gen_op_jmp_im(pc_ptr - dc->cs_base);
4586 gen_eob(dc);
4587 break;
4588 }
4589 /* if too long translation, stop generation too */
4590 if (gen_opc_ptr >= gen_opc_end ||
4591 (pc_ptr - pc_start) >= (TARGET_PAGE_SIZE - 32)) {
4592 gen_op_jmp_im(pc_ptr - dc->cs_base);
4593 gen_eob(dc);
4594 break;
4595 }
4596 }
4597 *gen_opc_ptr = INDEX_op_end;
4598 /* we don't forget to fill the last values */
4599 if (search_pc) {
4600 j = gen_opc_ptr - gen_opc_buf;
4601 lj++;
4602 while (lj <= j)
4603 gen_opc_instr_start[lj++] = 0;
4604 }
4605
4606#ifdef DEBUG_DISAS
e19e89a5 4607 if (loglevel & CPU_LOG_TB_IN_ASM) {
2c0262af
FB		 4608 fprintf(logfile, "----------------\n");
4609 fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start));
4610 disas(logfile, pc_start, pc_ptr - pc_start, 0, !dc->code32);
4611 fprintf(logfile, "\n");
e19e89a5
FB		 4612 if (loglevel & CPU_LOG_TB_OP) {
4613 fprintf(logfile, "OP:\n");
4614 dump_ops(gen_opc_buf, gen_opparam_buf);
4615 fprintf(logfile, "\n");
4616 }
2c0262af
FB		 4617 }
4618#endif
4619
4620 /* optimize flag computations */
4621 optimize_flags(gen_opc_buf, gen_opc_ptr - gen_opc_buf);
4622
4623#ifdef DEBUG_DISAS
e19e89a5 4624 if (loglevel & CPU_LOG_TB_OP_OPT) {
2c0262af
FB		 4625 fprintf(logfile, "AFTER FLAGS OPT:\n");
4626 dump_ops(gen_opc_buf, gen_opparam_buf);
4627 fprintf(logfile, "\n");
4628 }
4629#endif
4630 if (!search_pc)
4631 tb->size = pc_ptr - pc_start;
4632 return 0;
4633}
4634
4635int gen_intermediate_code(CPUState *env, TranslationBlock *tb)
4636{
4637 return gen_intermediate_code_internal(env, tb, 0);
4638}
4639
4640int gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb)
4641{
4642 return gen_intermediate_code_internal(env, tb, 1);
4643}
4644
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