root / target-i386 / ops_template_mem.h @ 07ad1b93
History | View | Annotate | Download (10 kB)
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 |
#ifdef MEM_WRITE
|
22 |
|
23 |
#if DATA_BITS == 8 |
24 |
#define MEM_SUFFIX b_mem
|
25 |
#elif DATA_BITS == 16 |
26 |
#define MEM_SUFFIX w_mem
|
27 |
#elif DATA_BITS == 32 |
28 |
#define MEM_SUFFIX l_mem
|
29 |
#endif
|
30 |
|
31 |
#else
|
32 |
|
33 |
#define MEM_SUFFIX SUFFIX
|
34 |
|
35 |
#endif
|
36 |
|
37 |
void OPPROTO glue(glue(op_rol, MEM_SUFFIX), _T0_T1_cc)(void) |
38 |
{ |
39 |
int count, src;
|
40 |
count = T1 & SHIFT_MASK; |
41 |
if (count) {
|
42 |
src = T0; |
43 |
T0 &= DATA_MASK; |
44 |
T0 = (T0 << count) | (T0 >> (DATA_BITS - count)); |
45 |
#ifdef MEM_WRITE
|
46 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
47 |
#else
|
48 |
/* gcc 3.2 workaround. This is really a bug in gcc. */
|
49 |
asm volatile("" : : "r" (T0)); |
50 |
#endif
|
51 |
CC_SRC = (cc_table[CC_OP].compute_all() & ~(CC_O | CC_C)) | |
52 |
(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
53 |
(T0 & CC_C); |
54 |
CC_OP = CC_OP_EFLAGS; |
55 |
} |
56 |
FORCE_RET(); |
57 |
} |
58 |
|
59 |
void OPPROTO glue(glue(op_ror, MEM_SUFFIX), _T0_T1_cc)(void) |
60 |
{ |
61 |
int count, src;
|
62 |
count = T1 & SHIFT_MASK; |
63 |
if (count) {
|
64 |
src = T0; |
65 |
T0 &= DATA_MASK; |
66 |
T0 = (T0 >> count) | (T0 << (DATA_BITS - count)); |
67 |
#ifdef MEM_WRITE
|
68 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
69 |
#else
|
70 |
/* gcc 3.2 workaround. This is really a bug in gcc. */
|
71 |
asm volatile("" : : "r" (T0)); |
72 |
#endif
|
73 |
CC_SRC = (cc_table[CC_OP].compute_all() & ~(CC_O | CC_C)) | |
74 |
(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
75 |
((T0 >> (DATA_BITS - 1)) & CC_C);
|
76 |
CC_OP = CC_OP_EFLAGS; |
77 |
} |
78 |
FORCE_RET(); |
79 |
} |
80 |
|
81 |
void OPPROTO glue(glue(op_rol, MEM_SUFFIX), _T0_T1)(void) |
82 |
{ |
83 |
int count;
|
84 |
count = T1 & SHIFT_MASK; |
85 |
if (count) {
|
86 |
T0 &= DATA_MASK; |
87 |
T0 = (T0 << count) | (T0 >> (DATA_BITS - count)); |
88 |
#ifdef MEM_WRITE
|
89 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
90 |
#endif
|
91 |
} |
92 |
FORCE_RET(); |
93 |
} |
94 |
|
95 |
void OPPROTO glue(glue(op_ror, MEM_SUFFIX), _T0_T1)(void) |
96 |
{ |
97 |
int count;
|
98 |
count = T1 & SHIFT_MASK; |
99 |
if (count) {
|
100 |
T0 &= DATA_MASK; |
101 |
T0 = (T0 >> count) | (T0 << (DATA_BITS - count)); |
102 |
#ifdef MEM_WRITE
|
103 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
104 |
#endif
|
105 |
} |
106 |
FORCE_RET(); |
107 |
} |
108 |
|
109 |
void OPPROTO glue(glue(op_rcl, MEM_SUFFIX), _T0_T1_cc)(void) |
110 |
{ |
111 |
int count, res, eflags;
|
112 |
unsigned int src; |
113 |
|
114 |
count = T1 & 0x1f;
|
115 |
#if DATA_BITS == 16 |
116 |
count = rclw_table[count]; |
117 |
#elif DATA_BITS == 8 |
118 |
count = rclb_table[count]; |
119 |
#endif
|
120 |
if (count) {
|
121 |
eflags = cc_table[CC_OP].compute_all(); |
122 |
T0 &= DATA_MASK; |
123 |
src = T0; |
124 |
res = (T0 << count) | ((eflags & CC_C) << (count - 1));
|
125 |
if (count > 1) |
126 |
res |= T0 >> (DATA_BITS + 1 - count);
|
127 |
T0 = res; |
128 |
#ifdef MEM_WRITE
|
129 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
130 |
#endif
|
131 |
CC_SRC = (eflags & ~(CC_C | CC_O)) | |
132 |
(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
133 |
((src >> (DATA_BITS - count)) & CC_C); |
134 |
CC_OP = CC_OP_EFLAGS; |
135 |
} |
136 |
FORCE_RET(); |
137 |
} |
138 |
|
139 |
void OPPROTO glue(glue(op_rcr, MEM_SUFFIX), _T0_T1_cc)(void) |
140 |
{ |
141 |
int count, res, eflags;
|
142 |
unsigned int src; |
143 |
|
144 |
count = T1 & 0x1f;
|
145 |
#if DATA_BITS == 16 |
146 |
count = rclw_table[count]; |
147 |
#elif DATA_BITS == 8 |
148 |
count = rclb_table[count]; |
149 |
#endif
|
150 |
if (count) {
|
151 |
eflags = cc_table[CC_OP].compute_all(); |
152 |
T0 &= DATA_MASK; |
153 |
src = T0; |
154 |
res = (T0 >> count) | ((eflags & CC_C) << (DATA_BITS - count)); |
155 |
if (count > 1) |
156 |
res |= T0 << (DATA_BITS + 1 - count);
|
157 |
T0 = res; |
158 |
#ifdef MEM_WRITE
|
159 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
160 |
#endif
|
161 |
CC_SRC = (eflags & ~(CC_C | CC_O)) | |
162 |
(lshift(src ^ T0, 11 - (DATA_BITS - 1)) & CC_O) | |
163 |
((src >> (count - 1)) & CC_C);
|
164 |
CC_OP = CC_OP_EFLAGS; |
165 |
} |
166 |
FORCE_RET(); |
167 |
} |
168 |
|
169 |
void OPPROTO glue(glue(op_shl, MEM_SUFFIX), _T0_T1_cc)(void) |
170 |
{ |
171 |
int count, src;
|
172 |
count = T1 & 0x1f;
|
173 |
if (count) {
|
174 |
src = (DATA_TYPE)T0 << (count - 1);
|
175 |
T0 = T0 << count; |
176 |
#ifdef MEM_WRITE
|
177 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
178 |
#endif
|
179 |
CC_SRC = src; |
180 |
CC_DST = T0; |
181 |
CC_OP = CC_OP_SHLB + SHIFT; |
182 |
} |
183 |
FORCE_RET(); |
184 |
} |
185 |
|
186 |
void OPPROTO glue(glue(op_shr, MEM_SUFFIX), _T0_T1_cc)(void) |
187 |
{ |
188 |
int count, src;
|
189 |
count = T1 & 0x1f;
|
190 |
if (count) {
|
191 |
T0 &= DATA_MASK; |
192 |
src = T0 >> (count - 1);
|
193 |
T0 = T0 >> count; |
194 |
#ifdef MEM_WRITE
|
195 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
196 |
#endif
|
197 |
CC_SRC = src; |
198 |
CC_DST = T0; |
199 |
CC_OP = CC_OP_SARB + SHIFT; |
200 |
} |
201 |
FORCE_RET(); |
202 |
} |
203 |
|
204 |
void OPPROTO glue(glue(op_sar, MEM_SUFFIX), _T0_T1_cc)(void) |
205 |
{ |
206 |
int count, src;
|
207 |
count = T1 & 0x1f;
|
208 |
if (count) {
|
209 |
src = (DATA_STYPE)T0; |
210 |
T0 = src >> count; |
211 |
src = src >> (count - 1);
|
212 |
#ifdef MEM_WRITE
|
213 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
214 |
#endif
|
215 |
CC_SRC = src; |
216 |
CC_DST = T0; |
217 |
CC_OP = CC_OP_SARB + SHIFT; |
218 |
} |
219 |
FORCE_RET(); |
220 |
} |
221 |
|
222 |
#if DATA_BITS == 16 |
223 |
/* XXX: overflow flag might be incorrect in some cases in shldw */
|
224 |
void OPPROTO glue(glue(op_shld, MEM_SUFFIX), _T0_T1_im_cc)(void) |
225 |
{ |
226 |
int count;
|
227 |
unsigned int res, tmp; |
228 |
count = PARAM1; |
229 |
T1 &= 0xffff;
|
230 |
res = T1 | (T0 << 16);
|
231 |
tmp = res >> (32 - count);
|
232 |
res <<= count; |
233 |
if (count > 16) |
234 |
res |= T1 << (count - 16);
|
235 |
T0 = res >> 16;
|
236 |
#ifdef MEM_WRITE
|
237 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
238 |
#endif
|
239 |
CC_SRC = tmp; |
240 |
CC_DST = T0; |
241 |
} |
242 |
|
243 |
void OPPROTO glue(glue(op_shld, MEM_SUFFIX), _T0_T1_ECX_cc)(void) |
244 |
{ |
245 |
int count;
|
246 |
unsigned int res, tmp; |
247 |
count = ECX & 0x1f;
|
248 |
if (count) {
|
249 |
T1 &= 0xffff;
|
250 |
res = T1 | (T0 << 16);
|
251 |
tmp = res >> (32 - count);
|
252 |
res <<= count; |
253 |
if (count > 16) |
254 |
res |= T1 << (count - 16);
|
255 |
T0 = res >> 16;
|
256 |
#ifdef MEM_WRITE
|
257 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
258 |
#endif
|
259 |
CC_SRC = tmp; |
260 |
CC_DST = T0; |
261 |
CC_OP = CC_OP_SARB + SHIFT; |
262 |
} |
263 |
FORCE_RET(); |
264 |
} |
265 |
|
266 |
void OPPROTO glue(glue(op_shrd, MEM_SUFFIX), _T0_T1_im_cc)(void) |
267 |
{ |
268 |
int count;
|
269 |
unsigned int res, tmp; |
270 |
|
271 |
count = PARAM1; |
272 |
res = (T0 & 0xffff) | (T1 << 16); |
273 |
tmp = res >> (count - 1);
|
274 |
res >>= count; |
275 |
if (count > 16) |
276 |
res |= T1 << (32 - count);
|
277 |
T0 = res; |
278 |
#ifdef MEM_WRITE
|
279 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
280 |
#endif
|
281 |
CC_SRC = tmp; |
282 |
CC_DST = T0; |
283 |
} |
284 |
|
285 |
|
286 |
void OPPROTO glue(glue(op_shrd, MEM_SUFFIX), _T0_T1_ECX_cc)(void) |
287 |
{ |
288 |
int count;
|
289 |
unsigned int res, tmp; |
290 |
|
291 |
count = ECX & 0x1f;
|
292 |
if (count) {
|
293 |
res = (T0 & 0xffff) | (T1 << 16); |
294 |
tmp = res >> (count - 1);
|
295 |
res >>= count; |
296 |
if (count > 16) |
297 |
res |= T1 << (32 - count);
|
298 |
T0 = res; |
299 |
#ifdef MEM_WRITE
|
300 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
301 |
#endif
|
302 |
CC_SRC = tmp; |
303 |
CC_DST = T0; |
304 |
CC_OP = CC_OP_SARB + SHIFT; |
305 |
} |
306 |
FORCE_RET(); |
307 |
} |
308 |
#endif
|
309 |
|
310 |
#if DATA_BITS == 32 |
311 |
void OPPROTO glue(glue(op_shld, MEM_SUFFIX), _T0_T1_im_cc)(void) |
312 |
{ |
313 |
int count, tmp;
|
314 |
count = PARAM1; |
315 |
T0 &= DATA_MASK; |
316 |
T1 &= DATA_MASK; |
317 |
tmp = T0 << (count - 1);
|
318 |
T0 = (T0 << count) | (T1 >> (DATA_BITS - count)); |
319 |
#ifdef MEM_WRITE
|
320 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
321 |
#endif
|
322 |
CC_SRC = tmp; |
323 |
CC_DST = T0; |
324 |
} |
325 |
|
326 |
void OPPROTO glue(glue(op_shld, MEM_SUFFIX), _T0_T1_ECX_cc)(void) |
327 |
{ |
328 |
int count, tmp;
|
329 |
count = ECX & 0x1f;
|
330 |
if (count) {
|
331 |
T0 &= DATA_MASK; |
332 |
T1 &= DATA_MASK; |
333 |
tmp = T0 << (count - 1);
|
334 |
T0 = (T0 << count) | (T1 >> (DATA_BITS - count)); |
335 |
#ifdef MEM_WRITE
|
336 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
337 |
#endif
|
338 |
CC_SRC = tmp; |
339 |
CC_DST = T0; |
340 |
CC_OP = CC_OP_SHLB + SHIFT; |
341 |
} |
342 |
FORCE_RET(); |
343 |
} |
344 |
|
345 |
void OPPROTO glue(glue(op_shrd, MEM_SUFFIX), _T0_T1_im_cc)(void) |
346 |
{ |
347 |
int count, tmp;
|
348 |
count = PARAM1; |
349 |
T0 &= DATA_MASK; |
350 |
T1 &= DATA_MASK; |
351 |
tmp = T0 >> (count - 1);
|
352 |
T0 = (T0 >> count) | (T1 << (DATA_BITS - count)); |
353 |
#ifdef MEM_WRITE
|
354 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
355 |
#endif
|
356 |
CC_SRC = tmp; |
357 |
CC_DST = T0; |
358 |
} |
359 |
|
360 |
|
361 |
void OPPROTO glue(glue(op_shrd, MEM_SUFFIX), _T0_T1_ECX_cc)(void) |
362 |
{ |
363 |
int count, tmp;
|
364 |
count = ECX & 0x1f;
|
365 |
if (count) {
|
366 |
T0 &= DATA_MASK; |
367 |
T1 &= DATA_MASK; |
368 |
tmp = T0 >> (count - 1);
|
369 |
T0 = (T0 >> count) | (T1 << (DATA_BITS - count)); |
370 |
#ifdef MEM_WRITE
|
371 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
372 |
#endif
|
373 |
CC_SRC = tmp; |
374 |
CC_DST = T0; |
375 |
CC_OP = CC_OP_SARB + SHIFT; |
376 |
} |
377 |
FORCE_RET(); |
378 |
} |
379 |
#endif
|
380 |
|
381 |
/* carry add/sub (we only need to set CC_OP differently) */
|
382 |
|
383 |
void OPPROTO glue(glue(op_adc, MEM_SUFFIX), _T0_T1_cc)(void) |
384 |
{ |
385 |
int cf;
|
386 |
cf = cc_table[CC_OP].compute_c(); |
387 |
T0 = T0 + T1 + cf; |
388 |
#ifdef MEM_WRITE
|
389 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
390 |
#endif
|
391 |
CC_SRC = T1; |
392 |
CC_DST = T0; |
393 |
CC_OP = CC_OP_ADDB + SHIFT + cf * 3;
|
394 |
} |
395 |
|
396 |
void OPPROTO glue(glue(op_sbb, MEM_SUFFIX), _T0_T1_cc)(void) |
397 |
{ |
398 |
int cf;
|
399 |
cf = cc_table[CC_OP].compute_c(); |
400 |
T0 = T0 - T1 - cf; |
401 |
#ifdef MEM_WRITE
|
402 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
403 |
#endif
|
404 |
CC_SRC = T1; |
405 |
CC_DST = T0; |
406 |
CC_OP = CC_OP_SUBB + SHIFT + cf * 3;
|
407 |
} |
408 |
|
409 |
void OPPROTO glue(glue(op_cmpxchg, MEM_SUFFIX), _T0_T1_EAX_cc)(void) |
410 |
{ |
411 |
unsigned int src, dst; |
412 |
|
413 |
src = T0; |
414 |
dst = EAX - T0; |
415 |
if ((DATA_TYPE)dst == 0) { |
416 |
T0 = T1; |
417 |
} else {
|
418 |
EAX = (EAX & ~DATA_MASK) | (T0 & DATA_MASK); |
419 |
} |
420 |
#ifdef MEM_WRITE
|
421 |
glue(st, SUFFIX)((uint8_t *)A0, T0); |
422 |
#endif
|
423 |
CC_SRC = src; |
424 |
CC_DST = dst; |
425 |
FORCE_RET(); |
426 |
} |
427 |
|
428 |
#undef MEM_SUFFIX
|
429 |
#undef MEM_WRITE
|