debuggers.hg

view tools/ioemu/target-i386/ops_template.h @ 0:7d21f7218375

Exact replica of unstable on 051908 + README-this
author Mukesh Rathor
date Mon May 19 15:34:57 2008 -0700 (2008-05-19)
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1 /*
2 * i386 micro operations (included several times to generate
3 * different operand sizes)
4 *
5 * Copyright (c) 2003 Fabrice Bellard
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21 #define DATA_BITS (1 << (3 + SHIFT))
22 #define SHIFT_MASK (DATA_BITS - 1)
23 #define SIGN_MASK (((target_ulong)1) << (DATA_BITS - 1))
24 #if DATA_BITS <= 32
25 #define SHIFT1_MASK 0x1f
26 #else
27 #define SHIFT1_MASK 0x3f
28 #endif
30 #if DATA_BITS == 8
31 #define SUFFIX b
32 #define DATA_TYPE uint8_t
33 #define DATA_STYPE int8_t
34 #define DATA_MASK 0xff
35 #elif DATA_BITS == 16
36 #define SUFFIX w
37 #define DATA_TYPE uint16_t
38 #define DATA_STYPE int16_t
39 #define DATA_MASK 0xffff
40 #elif DATA_BITS == 32
41 #define SUFFIX l
42 #define DATA_TYPE uint32_t
43 #define DATA_STYPE int32_t
44 #define DATA_MASK 0xffffffff
45 #elif DATA_BITS == 64
46 #define SUFFIX q
47 #define DATA_TYPE uint64_t
48 #define DATA_STYPE int64_t
49 #define DATA_MASK 0xffffffffffffffffULL
50 #else
51 #error unhandled operand size
52 #endif
54 /* dynamic flags computation */
56 static int glue(compute_all_add, SUFFIX)(void)
57 {
58 int cf, pf, af, zf, sf, of;
59 target_long src1, src2;
60 src1 = CC_SRC;
61 src2 = CC_DST - CC_SRC;
62 cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1;
63 pf = parity_table[(uint8_t)CC_DST];
64 af = (CC_DST ^ src1 ^ src2) & 0x10;
65 zf = ((DATA_TYPE)CC_DST == 0) << 6;
66 sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
67 of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
68 return cf | pf | af | zf | sf | of;
69 }
71 static int glue(compute_c_add, SUFFIX)(void)
72 {
73 int cf;
74 target_long src1;
75 src1 = CC_SRC;
76 cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1;
77 return cf;
78 }
80 static int glue(compute_all_adc, SUFFIX)(void)
81 {
82 int cf, pf, af, zf, sf, of;
83 target_long src1, src2;
84 src1 = CC_SRC;
85 src2 = CC_DST - CC_SRC - 1;
86 cf = (DATA_TYPE)CC_DST <= (DATA_TYPE)src1;
87 pf = parity_table[(uint8_t)CC_DST];
88 af = (CC_DST ^ src1 ^ src2) & 0x10;
89 zf = ((DATA_TYPE)CC_DST == 0) << 6;
90 sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
91 of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
92 return cf | pf | af | zf | sf | of;
93 }
95 static int glue(compute_c_adc, SUFFIX)(void)
96 {
97 int cf;
98 target_long src1;
99 src1 = CC_SRC;
100 cf = (DATA_TYPE)CC_DST <= (DATA_TYPE)src1;
101 return cf;
102 }
104 static int glue(compute_all_sub, SUFFIX)(void)
105 {
106 int cf, pf, af, zf, sf, of;
107 target_long src1, src2;
108 src1 = CC_DST + CC_SRC;
109 src2 = CC_SRC;
110 cf = (DATA_TYPE)src1 < (DATA_TYPE)src2;
111 pf = parity_table[(uint8_t)CC_DST];
112 af = (CC_DST ^ src1 ^ src2) & 0x10;
113 zf = ((DATA_TYPE)CC_DST == 0) << 6;
114 sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
115 of = lshift((src1 ^ src2) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
116 return cf | pf | af | zf | sf | of;
117 }
119 static int glue(compute_c_sub, SUFFIX)(void)
120 {
121 int cf;
122 target_long src1, src2;
123 src1 = CC_DST + CC_SRC;
124 src2 = CC_SRC;
125 cf = (DATA_TYPE)src1 < (DATA_TYPE)src2;
126 return cf;
127 }
129 static int glue(compute_all_sbb, SUFFIX)(void)
130 {
131 int cf, pf, af, zf, sf, of;
132 target_long src1, src2;
133 src1 = CC_DST + CC_SRC + 1;
134 src2 = CC_SRC;
135 cf = (DATA_TYPE)src1 <= (DATA_TYPE)src2;
136 pf = parity_table[(uint8_t)CC_DST];
137 af = (CC_DST ^ src1 ^ src2) & 0x10;
138 zf = ((DATA_TYPE)CC_DST == 0) << 6;
139 sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
140 of = lshift((src1 ^ src2) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O;
141 return cf | pf | af | zf | sf | of;
142 }
144 static int glue(compute_c_sbb, SUFFIX)(void)
145 {
146 int cf;
147 target_long src1, src2;
148 src1 = CC_DST + CC_SRC + 1;
149 src2 = CC_SRC;
150 cf = (DATA_TYPE)src1 <= (DATA_TYPE)src2;
151 return cf;
152 }
154 static int glue(compute_all_logic, SUFFIX)(void)
155 {
156 int cf, pf, af, zf, sf, of;
157 cf = 0;
158 pf = parity_table[(uint8_t)CC_DST];
159 af = 0;
160 zf = ((DATA_TYPE)CC_DST == 0) << 6;
161 sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
162 of = 0;
163 return cf | pf | af | zf | sf | of;
164 }
166 static int glue(compute_c_logic, SUFFIX)(void)
167 {
168 return 0;
169 }
171 static int glue(compute_all_inc, SUFFIX)(void)
172 {
173 int cf, pf, af, zf, sf, of;
174 target_long src1, src2;
175 src1 = CC_DST - 1;
176 src2 = 1;
177 cf = CC_SRC;
178 pf = parity_table[(uint8_t)CC_DST];
179 af = (CC_DST ^ src1 ^ src2) & 0x10;
180 zf = ((DATA_TYPE)CC_DST == 0) << 6;
181 sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
182 of = ((CC_DST & DATA_MASK) == SIGN_MASK) << 11;
183 return cf | pf | af | zf | sf | of;
184 }
186 #if DATA_BITS == 32
187 static int glue(compute_c_inc, SUFFIX)(void)
188 {
189 return CC_SRC;
190 }
191 #endif
193 static int glue(compute_all_dec, SUFFIX)(void)
194 {
195 int cf, pf, af, zf, sf, of;
196 target_long src1, src2;
197 src1 = CC_DST + 1;
198 src2 = 1;
199 cf = CC_SRC;
200 pf = parity_table[(uint8_t)CC_DST];
201 af = (CC_DST ^ src1 ^ src2) & 0x10;
202 zf = ((DATA_TYPE)CC_DST == 0) << 6;
203 sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
204 of = ((CC_DST & DATA_MASK) == ((target_ulong)SIGN_MASK - 1)) << 11;
205 return cf | pf | af | zf | sf | of;
206 }
208 static int glue(compute_all_shl, SUFFIX)(void)
209 {
210 int cf, pf, af, zf, sf, of;
211 cf = (CC_SRC >> (DATA_BITS - 1)) & CC_C;
212 pf = parity_table[(uint8_t)CC_DST];
213 af = 0; /* undefined */
214 zf = ((DATA_TYPE)CC_DST == 0) << 6;
215 sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
216 /* of is defined if shift count == 1 */
217 of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O;
218 return cf | pf | af | zf | sf | of;
219 }
221 static int glue(compute_c_shl, SUFFIX)(void)
222 {
223 return (CC_SRC >> (DATA_BITS - 1)) & CC_C;
224 }
226 #if DATA_BITS == 32
227 static int glue(compute_c_sar, SUFFIX)(void)
228 {
229 return CC_SRC & 1;
230 }
231 #endif
233 static int glue(compute_all_sar, SUFFIX)(void)
234 {
235 int cf, pf, af, zf, sf, of;
236 cf = CC_SRC & 1;
237 pf = parity_table[(uint8_t)CC_DST];
238 af = 0; /* undefined */
239 zf = ((DATA_TYPE)CC_DST == 0) << 6;
240 sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
241 /* of is defined if shift count == 1 */
242 of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O;
243 return cf | pf | af | zf | sf | of;
244 }
246 #if DATA_BITS == 32
247 static int glue(compute_c_mul, SUFFIX)(void)
248 {
249 int cf;
250 cf = (CC_SRC != 0);
251 return cf;
252 }
253 #endif
255 /* NOTE: we compute the flags like the P4. On olders CPUs, only OF and
256 CF are modified and it is slower to do that. */
257 static int glue(compute_all_mul, SUFFIX)(void)
258 {
259 int cf, pf, af, zf, sf, of;
260 cf = (CC_SRC != 0);
261 pf = parity_table[(uint8_t)CC_DST];
262 af = 0; /* undefined */
263 zf = ((DATA_TYPE)CC_DST == 0) << 6;
264 sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80;
265 of = cf << 11;
266 return cf | pf | af | zf | sf | of;
267 }
269 /* various optimized jumps cases */
271 void OPPROTO glue(op_jb_sub, SUFFIX)(void)
272 {
273 target_long src1, src2;
274 src1 = CC_DST + CC_SRC;
275 src2 = CC_SRC;
277 if ((DATA_TYPE)src1 < (DATA_TYPE)src2)
278 GOTO_LABEL_PARAM(1);
279 FORCE_RET();
280 }
282 void OPPROTO glue(op_jz_sub, SUFFIX)(void)
283 {
284 if ((DATA_TYPE)CC_DST == 0)
285 GOTO_LABEL_PARAM(1);
286 FORCE_RET();
287 }
289 void OPPROTO glue(op_jnz_sub, SUFFIX)(void)
290 {
291 if ((DATA_TYPE)CC_DST != 0)
292 GOTO_LABEL_PARAM(1);
293 FORCE_RET();
294 }
296 void OPPROTO glue(op_jbe_sub, SUFFIX)(void)
297 {
298 target_long src1, src2;
299 src1 = CC_DST + CC_SRC;
300 src2 = CC_SRC;
302 if ((DATA_TYPE)src1 <= (DATA_TYPE)src2)
303 GOTO_LABEL_PARAM(1);
304 FORCE_RET();
305 }
307 void OPPROTO glue(op_js_sub, SUFFIX)(void)
308 {
309 if (CC_DST & SIGN_MASK)
310 GOTO_LABEL_PARAM(1);
311 FORCE_RET();
312 }
314 void OPPROTO glue(op_jl_sub, SUFFIX)(void)
315 {
316 target_long src1, src2;
317 src1 = CC_DST + CC_SRC;
318 src2 = CC_SRC;
320 if ((DATA_STYPE)src1 < (DATA_STYPE)src2)
321 GOTO_LABEL_PARAM(1);
322 FORCE_RET();
323 }
325 void OPPROTO glue(op_jle_sub, SUFFIX)(void)
326 {
327 target_long src1, src2;
328 src1 = CC_DST + CC_SRC;
329 src2 = CC_SRC;
331 if ((DATA_STYPE)src1 <= (DATA_STYPE)src2)
332 GOTO_LABEL_PARAM(1);
333 FORCE_RET();
334 }
336 /* oldies */
338 #if DATA_BITS >= 16
340 void OPPROTO glue(op_loopnz, SUFFIX)(void)
341 {
342 if ((DATA_TYPE)ECX != 0 && !(T0 & CC_Z))
343 GOTO_LABEL_PARAM(1);
344 FORCE_RET();
345 }
347 void OPPROTO glue(op_loopz, SUFFIX)(void)
348 {
349 if ((DATA_TYPE)ECX != 0 && (T0 & CC_Z))
350 GOTO_LABEL_PARAM(1);
351 FORCE_RET();
352 }
354 void OPPROTO glue(op_jz_ecx, SUFFIX)(void)
355 {
356 if ((DATA_TYPE)ECX == 0)
357 GOTO_LABEL_PARAM(1);
358 FORCE_RET();
359 }
361 void OPPROTO glue(op_jnz_ecx, SUFFIX)(void)
362 {
363 if ((DATA_TYPE)ECX != 0)
364 GOTO_LABEL_PARAM(1);
365 FORCE_RET();
366 }
368 #endif
370 /* various optimized set cases */
372 void OPPROTO glue(op_setb_T0_sub, SUFFIX)(void)
373 {
374 target_long src1, src2;
375 src1 = CC_DST + CC_SRC;
376 src2 = CC_SRC;
378 T0 = ((DATA_TYPE)src1 < (DATA_TYPE)src2);
379 }
381 void OPPROTO glue(op_setz_T0_sub, SUFFIX)(void)
382 {
383 T0 = ((DATA_TYPE)CC_DST == 0);
384 }
386 void OPPROTO glue(op_setbe_T0_sub, SUFFIX)(void)
387 {
388 target_long src1, src2;
389 src1 = CC_DST + CC_SRC;
390 src2 = CC_SRC;
392 T0 = ((DATA_TYPE)src1 <= (DATA_TYPE)src2);
393 }
395 void OPPROTO glue(op_sets_T0_sub, SUFFIX)(void)
396 {
397 T0 = lshift(CC_DST, -(DATA_BITS - 1)) & 1;
398 }
400 void OPPROTO glue(op_setl_T0_sub, SUFFIX)(void)
401 {
402 target_long src1, src2;
403 src1 = CC_DST + CC_SRC;
404 src2 = CC_SRC;
406 T0 = ((DATA_STYPE)src1 < (DATA_STYPE)src2);
407 }
409 void OPPROTO glue(op_setle_T0_sub, SUFFIX)(void)
410 {
411 target_long src1, src2;
412 src1 = CC_DST + CC_SRC;
413 src2 = CC_SRC;
415 T0 = ((DATA_STYPE)src1 <= (DATA_STYPE)src2);
416 }
418 /* shifts */
420 void OPPROTO glue(glue(op_shl, SUFFIX), _T0_T1)(void)
421 {
422 int count;
423 count = T1 & SHIFT1_MASK;
424 T0 = T0 << count;
425 FORCE_RET();
426 }
428 void OPPROTO glue(glue(op_shr, SUFFIX), _T0_T1)(void)
429 {
430 int count;
431 count = T1 & SHIFT1_MASK;
432 T0 &= DATA_MASK;
433 T0 = T0 >> count;
434 FORCE_RET();
435 }
437 void OPPROTO glue(glue(op_sar, SUFFIX), _T0_T1)(void)
438 {
439 int count;
440 target_long src;
442 count = T1 & SHIFT1_MASK;
443 src = (DATA_STYPE)T0;
444 T0 = src >> count;
445 FORCE_RET();
446 }
448 #undef MEM_WRITE
449 #include "ops_template_mem.h"
451 #define MEM_WRITE 0
452 #include "ops_template_mem.h"
454 #if !defined(CONFIG_USER_ONLY)
455 #define MEM_WRITE 1
456 #include "ops_template_mem.h"
458 #define MEM_WRITE 2
459 #include "ops_template_mem.h"
460 #endif
462 /* bit operations */
463 #if DATA_BITS >= 16
465 void OPPROTO glue(glue(op_bt, SUFFIX), _T0_T1_cc)(void)
466 {
467 int count;
468 count = T1 & SHIFT_MASK;
469 CC_SRC = T0 >> count;
470 }
472 void OPPROTO glue(glue(op_bts, SUFFIX), _T0_T1_cc)(void)
473 {
474 int count;
475 count = T1 & SHIFT_MASK;
476 T1 = T0 >> count;
477 T0 |= (((target_long)1) << count);
478 }
480 void OPPROTO glue(glue(op_btr, SUFFIX), _T0_T1_cc)(void)
481 {
482 int count;
483 count = T1 & SHIFT_MASK;
484 T1 = T0 >> count;
485 T0 &= ~(((target_long)1) << count);
486 }
488 void OPPROTO glue(glue(op_btc, SUFFIX), _T0_T1_cc)(void)
489 {
490 int count;
491 count = T1 & SHIFT_MASK;
492 T1 = T0 >> count;
493 T0 ^= (((target_long)1) << count);
494 }
496 void OPPROTO glue(glue(op_add_bit, SUFFIX), _A0_T1)(void)
497 {
498 A0 += ((DATA_STYPE)T1 >> (3 + SHIFT)) << SHIFT;
499 }
501 void OPPROTO glue(glue(op_bsf, SUFFIX), _T0_cc)(void)
502 {
503 int count;
504 target_long res;
506 res = T0 & DATA_MASK;
507 if (res != 0) {
508 count = 0;
509 while ((res & 1) == 0) {
510 count++;
511 res >>= 1;
512 }
513 T1 = count;
514 CC_DST = 1; /* ZF = 0 */
515 } else {
516 CC_DST = 0; /* ZF = 1 */
517 }
518 FORCE_RET();
519 }
521 void OPPROTO glue(glue(op_bsr, SUFFIX), _T0_cc)(void)
522 {
523 int count;
524 target_long res;
526 res = T0 & DATA_MASK;
527 if (res != 0) {
528 count = DATA_BITS - 1;
529 while ((res & SIGN_MASK) == 0) {
530 count--;
531 res <<= 1;
532 }
533 T1 = count;
534 CC_DST = 1; /* ZF = 0 */
535 } else {
536 CC_DST = 0; /* ZF = 1 */
537 }
538 FORCE_RET();
539 }
541 #endif
543 #if DATA_BITS == 32
544 void OPPROTO op_update_bt_cc(void)
545 {
546 CC_SRC = T1;
547 }
548 #endif
550 /* string operations */
552 void OPPROTO glue(op_movl_T0_Dshift, SUFFIX)(void)
553 {
554 T0 = DF << SHIFT;
555 }
557 /* port I/O */
558 #if DATA_BITS <= 32
559 void OPPROTO glue(glue(op_out, SUFFIX), _T0_T1)(void)
560 {
561 glue(cpu_out, SUFFIX)(env, T0, T1 & DATA_MASK);
562 }
564 void OPPROTO glue(glue(op_in, SUFFIX), _T0_T1)(void)
565 {
566 T1 = glue(cpu_in, SUFFIX)(env, T0);
567 }
569 void OPPROTO glue(glue(op_in, SUFFIX), _DX_T0)(void)
570 {
571 T0 = glue(cpu_in, SUFFIX)(env, EDX & 0xffff);
572 }
574 void OPPROTO glue(glue(op_out, SUFFIX), _DX_T0)(void)
575 {
576 glue(cpu_out, SUFFIX)(env, EDX & 0xffff, T0);
577 }
579 void OPPROTO glue(glue(op_check_io, SUFFIX), _T0)(void)
580 {
581 glue(glue(check_io, SUFFIX), _T0)();
582 }
584 void OPPROTO glue(glue(op_check_io, SUFFIX), _DX)(void)
585 {
586 glue(glue(check_io, SUFFIX), _DX)();
587 }
588 #endif
590 #undef DATA_BITS
591 #undef SHIFT_MASK
592 #undef SHIFT1_MASK
593 #undef SIGN_MASK
594 #undef DATA_TYPE
595 #undef DATA_STYPE
596 #undef DATA_MASK
597 #undef SUFFIX