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2c0262af FB |
1 | /* |
2 | * ARM 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 | ||
26 | #include "cpu.h" | |
27 | #include "exec-all.h" | |
28 | #include "disas.h" | |
29 | ||
30 | /* internal defines */ | |
31 | typedef struct DisasContext { | |
0fa85d43 | 32 | target_ulong pc; |
2c0262af FB |
33 | int is_jmp; |
34 | struct TranslationBlock *tb; | |
35 | } DisasContext; | |
36 | ||
37 | #define DISAS_JUMP_NEXT 4 | |
38 | ||
39 | /* XXX: move that elsewhere */ | |
40 | static uint16_t *gen_opc_ptr; | |
41 | static uint32_t *gen_opparam_ptr; | |
42 | extern FILE *logfile; | |
43 | extern int loglevel; | |
44 | ||
45 | enum { | |
46 | #define DEF(s, n, copy_size) INDEX_op_ ## s, | |
47 | #include "opc.h" | |
48 | #undef DEF | |
49 | NB_OPS, | |
50 | }; | |
51 | ||
52 | #include "gen-op.h" | |
53 | ||
2c0262af FB |
54 | static GenOpFunc2 *gen_test_cc[14] = { |
55 | gen_op_test_eq, | |
56 | gen_op_test_ne, | |
57 | gen_op_test_cs, | |
58 | gen_op_test_cc, | |
59 | gen_op_test_mi, | |
60 | gen_op_test_pl, | |
61 | gen_op_test_vs, | |
62 | gen_op_test_vc, | |
63 | gen_op_test_hi, | |
64 | gen_op_test_ls, | |
65 | gen_op_test_ge, | |
66 | gen_op_test_lt, | |
67 | gen_op_test_gt, | |
68 | gen_op_test_le, | |
69 | }; | |
70 | ||
71 | const uint8_t table_logic_cc[16] = { | |
72 | 1, /* and */ | |
73 | 1, /* xor */ | |
74 | 0, /* sub */ | |
75 | 0, /* rsb */ | |
76 | 0, /* add */ | |
77 | 0, /* adc */ | |
78 | 0, /* sbc */ | |
79 | 0, /* rsc */ | |
80 | 1, /* andl */ | |
81 | 1, /* xorl */ | |
82 | 0, /* cmp */ | |
83 | 0, /* cmn */ | |
84 | 1, /* orr */ | |
85 | 1, /* mov */ | |
86 | 1, /* bic */ | |
87 | 1, /* mvn */ | |
88 | }; | |
89 | ||
90 | static GenOpFunc1 *gen_shift_T1_im[4] = { | |
91 | gen_op_shll_T1_im, | |
92 | gen_op_shrl_T1_im, | |
93 | gen_op_sarl_T1_im, | |
94 | gen_op_rorl_T1_im, | |
95 | }; | |
96 | ||
1e8d4eec FB |
97 | static GenOpFunc *gen_shift_T1_0[4] = { |
98 | NULL, | |
99 | gen_op_shrl_T1_0, | |
100 | gen_op_sarl_T1_0, | |
101 | gen_op_rrxl_T1, | |
102 | }; | |
103 | ||
2c0262af FB |
104 | static GenOpFunc1 *gen_shift_T2_im[4] = { |
105 | gen_op_shll_T2_im, | |
106 | gen_op_shrl_T2_im, | |
107 | gen_op_sarl_T2_im, | |
108 | gen_op_rorl_T2_im, | |
109 | }; | |
110 | ||
1e8d4eec FB |
111 | static GenOpFunc *gen_shift_T2_0[4] = { |
112 | NULL, | |
113 | gen_op_shrl_T2_0, | |
114 | gen_op_sarl_T2_0, | |
115 | gen_op_rrxl_T2, | |
116 | }; | |
117 | ||
2c0262af FB |
118 | static GenOpFunc1 *gen_shift_T1_im_cc[4] = { |
119 | gen_op_shll_T1_im_cc, | |
120 | gen_op_shrl_T1_im_cc, | |
121 | gen_op_sarl_T1_im_cc, | |
122 | gen_op_rorl_T1_im_cc, | |
123 | }; | |
124 | ||
1e8d4eec FB |
125 | static GenOpFunc *gen_shift_T1_0_cc[4] = { |
126 | NULL, | |
127 | gen_op_shrl_T1_0_cc, | |
128 | gen_op_sarl_T1_0_cc, | |
129 | gen_op_rrxl_T1_cc, | |
130 | }; | |
131 | ||
2c0262af FB |
132 | static GenOpFunc *gen_shift_T1_T0[4] = { |
133 | gen_op_shll_T1_T0, | |
134 | gen_op_shrl_T1_T0, | |
135 | gen_op_sarl_T1_T0, | |
136 | gen_op_rorl_T1_T0, | |
137 | }; | |
138 | ||
139 | static GenOpFunc *gen_shift_T1_T0_cc[4] = { | |
140 | gen_op_shll_T1_T0_cc, | |
141 | gen_op_shrl_T1_T0_cc, | |
142 | gen_op_sarl_T1_T0_cc, | |
143 | gen_op_rorl_T1_T0_cc, | |
144 | }; | |
145 | ||
146 | static GenOpFunc *gen_op_movl_TN_reg[3][16] = { | |
147 | { | |
148 | gen_op_movl_T0_r0, | |
149 | gen_op_movl_T0_r1, | |
150 | gen_op_movl_T0_r2, | |
151 | gen_op_movl_T0_r3, | |
152 | gen_op_movl_T0_r4, | |
153 | gen_op_movl_T0_r5, | |
154 | gen_op_movl_T0_r6, | |
155 | gen_op_movl_T0_r7, | |
156 | gen_op_movl_T0_r8, | |
157 | gen_op_movl_T0_r9, | |
158 | gen_op_movl_T0_r10, | |
159 | gen_op_movl_T0_r11, | |
160 | gen_op_movl_T0_r12, | |
161 | gen_op_movl_T0_r13, | |
162 | gen_op_movl_T0_r14, | |
163 | gen_op_movl_T0_r15, | |
164 | }, | |
165 | { | |
166 | gen_op_movl_T1_r0, | |
167 | gen_op_movl_T1_r1, | |
168 | gen_op_movl_T1_r2, | |
169 | gen_op_movl_T1_r3, | |
170 | gen_op_movl_T1_r4, | |
171 | gen_op_movl_T1_r5, | |
172 | gen_op_movl_T1_r6, | |
173 | gen_op_movl_T1_r7, | |
174 | gen_op_movl_T1_r8, | |
175 | gen_op_movl_T1_r9, | |
176 | gen_op_movl_T1_r10, | |
177 | gen_op_movl_T1_r11, | |
178 | gen_op_movl_T1_r12, | |
179 | gen_op_movl_T1_r13, | |
180 | gen_op_movl_T1_r14, | |
181 | gen_op_movl_T1_r15, | |
182 | }, | |
183 | { | |
184 | gen_op_movl_T2_r0, | |
185 | gen_op_movl_T2_r1, | |
186 | gen_op_movl_T2_r2, | |
187 | gen_op_movl_T2_r3, | |
188 | gen_op_movl_T2_r4, | |
189 | gen_op_movl_T2_r5, | |
190 | gen_op_movl_T2_r6, | |
191 | gen_op_movl_T2_r7, | |
192 | gen_op_movl_T2_r8, | |
193 | gen_op_movl_T2_r9, | |
194 | gen_op_movl_T2_r10, | |
195 | gen_op_movl_T2_r11, | |
196 | gen_op_movl_T2_r12, | |
197 | gen_op_movl_T2_r13, | |
198 | gen_op_movl_T2_r14, | |
199 | gen_op_movl_T2_r15, | |
200 | }, | |
201 | }; | |
202 | ||
203 | static GenOpFunc *gen_op_movl_reg_TN[2][16] = { | |
204 | { | |
205 | gen_op_movl_r0_T0, | |
206 | gen_op_movl_r1_T0, | |
207 | gen_op_movl_r2_T0, | |
208 | gen_op_movl_r3_T0, | |
209 | gen_op_movl_r4_T0, | |
210 | gen_op_movl_r5_T0, | |
211 | gen_op_movl_r6_T0, | |
212 | gen_op_movl_r7_T0, | |
213 | gen_op_movl_r8_T0, | |
214 | gen_op_movl_r9_T0, | |
215 | gen_op_movl_r10_T0, | |
216 | gen_op_movl_r11_T0, | |
217 | gen_op_movl_r12_T0, | |
218 | gen_op_movl_r13_T0, | |
219 | gen_op_movl_r14_T0, | |
220 | gen_op_movl_r15_T0, | |
221 | }, | |
222 | { | |
223 | gen_op_movl_r0_T1, | |
224 | gen_op_movl_r1_T1, | |
225 | gen_op_movl_r2_T1, | |
226 | gen_op_movl_r3_T1, | |
227 | gen_op_movl_r4_T1, | |
228 | gen_op_movl_r5_T1, | |
229 | gen_op_movl_r6_T1, | |
230 | gen_op_movl_r7_T1, | |
231 | gen_op_movl_r8_T1, | |
232 | gen_op_movl_r9_T1, | |
233 | gen_op_movl_r10_T1, | |
234 | gen_op_movl_r11_T1, | |
235 | gen_op_movl_r12_T1, | |
236 | gen_op_movl_r13_T1, | |
237 | gen_op_movl_r14_T1, | |
238 | gen_op_movl_r15_T1, | |
239 | }, | |
240 | }; | |
241 | ||
242 | static GenOpFunc1 *gen_op_movl_TN_im[3] = { | |
243 | gen_op_movl_T0_im, | |
244 | gen_op_movl_T1_im, | |
245 | gen_op_movl_T2_im, | |
246 | }; | |
247 | ||
99c475ab FB |
248 | static GenOpFunc1 *gen_shift_T0_im_thumb[3] = { |
249 | gen_op_shll_T0_im_thumb, | |
250 | gen_op_shrl_T0_im_thumb, | |
251 | gen_op_sarl_T0_im_thumb, | |
252 | }; | |
253 | ||
254 | static inline void gen_bx(DisasContext *s) | |
255 | { | |
256 | s->is_jmp = DISAS_UPDATE; | |
257 | gen_op_bx_T0(); | |
258 | } | |
259 | ||
2c0262af FB |
260 | static inline void gen_movl_TN_reg(DisasContext *s, int reg, int t) |
261 | { | |
262 | int val; | |
263 | ||
264 | if (reg == 15) { | |
265 | /* normaly, since we updated PC, we need only to add 4 */ | |
266 | val = (long)s->pc + 4; | |
267 | gen_op_movl_TN_im[t](val); | |
268 | } else { | |
269 | gen_op_movl_TN_reg[t][reg](); | |
270 | } | |
271 | } | |
272 | ||
273 | static inline void gen_movl_T0_reg(DisasContext *s, int reg) | |
274 | { | |
275 | gen_movl_TN_reg(s, reg, 0); | |
276 | } | |
277 | ||
278 | static inline void gen_movl_T1_reg(DisasContext *s, int reg) | |
279 | { | |
280 | gen_movl_TN_reg(s, reg, 1); | |
281 | } | |
282 | ||
283 | static inline void gen_movl_T2_reg(DisasContext *s, int reg) | |
284 | { | |
285 | gen_movl_TN_reg(s, reg, 2); | |
286 | } | |
287 | ||
288 | static inline void gen_movl_reg_TN(DisasContext *s, int reg, int t) | |
289 | { | |
290 | gen_op_movl_reg_TN[t][reg](); | |
291 | if (reg == 15) { | |
292 | s->is_jmp = DISAS_JUMP; | |
293 | } | |
294 | } | |
295 | ||
296 | static inline void gen_movl_reg_T0(DisasContext *s, int reg) | |
297 | { | |
298 | gen_movl_reg_TN(s, reg, 0); | |
299 | } | |
300 | ||
301 | static inline void gen_movl_reg_T1(DisasContext *s, int reg) | |
302 | { | |
303 | gen_movl_reg_TN(s, reg, 1); | |
304 | } | |
305 | ||
306 | static inline void gen_add_data_offset(DisasContext *s, unsigned int insn) | |
307 | { | |
1e8d4eec | 308 | int val, rm, shift, shiftop; |
2c0262af FB |
309 | |
310 | if (!(insn & (1 << 25))) { | |
311 | /* immediate */ | |
312 | val = insn & 0xfff; | |
313 | if (!(insn & (1 << 23))) | |
314 | val = -val; | |
537730b9 FB |
315 | if (val != 0) |
316 | gen_op_addl_T1_im(val); | |
2c0262af FB |
317 | } else { |
318 | /* shift/register */ | |
319 | rm = (insn) & 0xf; | |
320 | shift = (insn >> 7) & 0x1f; | |
321 | gen_movl_T2_reg(s, rm); | |
1e8d4eec | 322 | shiftop = (insn >> 5) & 3; |
2c0262af | 323 | if (shift != 0) { |
1e8d4eec FB |
324 | gen_shift_T2_im[shiftop](shift); |
325 | } else if (shiftop != 0) { | |
326 | gen_shift_T2_0[shiftop](); | |
2c0262af FB |
327 | } |
328 | if (!(insn & (1 << 23))) | |
329 | gen_op_subl_T1_T2(); | |
330 | else | |
331 | gen_op_addl_T1_T2(); | |
332 | } | |
333 | } | |
334 | ||
335 | static inline void gen_add_datah_offset(DisasContext *s, unsigned int insn) | |
336 | { | |
337 | int val, rm; | |
338 | ||
339 | if (insn & (1 << 22)) { | |
340 | /* immediate */ | |
341 | val = (insn & 0xf) | ((insn >> 4) & 0xf0); | |
342 | if (!(insn & (1 << 23))) | |
343 | val = -val; | |
537730b9 FB |
344 | if (val != 0) |
345 | gen_op_addl_T1_im(val); | |
2c0262af FB |
346 | } else { |
347 | /* register */ | |
348 | rm = (insn) & 0xf; | |
349 | gen_movl_T2_reg(s, rm); | |
350 | if (!(insn & (1 << 23))) | |
351 | gen_op_subl_T1_T2(); | |
352 | else | |
353 | gen_op_addl_T1_T2(); | |
354 | } | |
355 | } | |
356 | ||
357 | static void disas_arm_insn(DisasContext *s) | |
358 | { | |
359 | unsigned int cond, insn, val, op1, i, shift, rm, rs, rn, rd, sh; | |
360 | ||
361 | insn = ldl(s->pc); | |
362 | s->pc += 4; | |
363 | ||
364 | cond = insn >> 28; | |
99c475ab FB |
365 | if (cond == 0xf){ |
366 | if ((insn & 0x0d70f000) == 0x0550f000) | |
367 | return; /* PLD */ | |
368 | else if ((insn & 0x0e000000) == 0x0a000000) { | |
369 | /* branch link and change to thumb (blx <offset>) */ | |
370 | int32_t offset; | |
371 | ||
372 | val = (uint32_t)s->pc; | |
373 | gen_op_movl_T0_im(val); | |
374 | gen_movl_reg_T0(s, 14); | |
375 | /* Sign-extend the 24-bit offset */ | |
376 | offset = (((int32_t)insn) << 8) >> 8; | |
377 | /* offset * 4 + bit24 * 2 + (thumb bit) */ | |
378 | val += (offset << 2) | ((insn >> 23) & 2) | 1; | |
379 | /* pipeline offset */ | |
380 | val += 4; | |
381 | gen_op_movl_T0_im(val); | |
382 | gen_bx(s); | |
383 | return; | |
384 | } | |
2c0262af | 385 | goto illegal_op; |
99c475ab | 386 | } |
2c0262af FB |
387 | if (cond != 0xe) { |
388 | /* if not always execute, we generate a conditional jump to | |
389 | next instruction */ | |
390 | gen_test_cc[cond ^ 1]((long)s->tb, (long)s->pc); | |
391 | s->is_jmp = DISAS_JUMP_NEXT; | |
392 | } | |
99c475ab FB |
393 | if ((insn & 0x0f900000) == 0x03000000) { |
394 | if ((insn & 0x0ff0f000) != 0x0360f000) | |
395 | goto illegal_op; | |
396 | /* CPSR = immediate */ | |
397 | val = insn & 0xff; | |
398 | shift = ((insn >> 8) & 0xf) * 2; | |
399 | if (shift) | |
400 | val = (val >> shift) | (val << (32 - shift)); | |
401 | gen_op_movl_T0_im(val); | |
402 | if (insn & (1 << 19)) | |
403 | gen_op_movl_psr_T0(); | |
404 | } else if ((insn & 0x0f900000) == 0x01000000 | |
405 | && (insn & 0x00000090) != 0x00000090) { | |
406 | /* miscellaneous instructions */ | |
407 | op1 = (insn >> 21) & 3; | |
408 | sh = (insn >> 4) & 0xf; | |
409 | rm = insn & 0xf; | |
410 | switch (sh) { | |
411 | case 0x0: /* move program status register */ | |
412 | if (op1 & 2) { | |
413 | /* SPSR not accessible in user mode */ | |
414 | goto illegal_op; | |
415 | } | |
416 | if (op1 & 1) { | |
417 | /* CPSR = reg */ | |
418 | gen_movl_T0_reg(s, rm); | |
419 | if (insn & (1 << 19)) | |
420 | gen_op_movl_psr_T0(); | |
421 | } else { | |
422 | /* reg = CPSR */ | |
423 | rd = (insn >> 12) & 0xf; | |
424 | gen_op_movl_T0_psr(); | |
425 | gen_movl_reg_T0(s, rd); | |
426 | } | |
427 | case 0x1: | |
428 | if (op1 == 1) { | |
429 | /* branch/exchange thumb (bx). */ | |
430 | gen_movl_T0_reg(s, rm); | |
431 | gen_bx(s); | |
432 | } else if (op1 == 3) { | |
433 | /* clz */ | |
434 | rd = (insn >> 12) & 0xf; | |
435 | gen_movl_T0_reg(s, rm); | |
436 | gen_op_clz_T0(); | |
437 | gen_movl_reg_T0(s, rd); | |
438 | } else { | |
439 | goto illegal_op; | |
440 | } | |
441 | break; | |
442 | case 0x3: | |
443 | if (op1 != 1) | |
444 | goto illegal_op; | |
445 | ||
446 | /* branch link/exchange thumb (blx) */ | |
447 | val = (uint32_t)s->pc; | |
448 | gen_op_movl_T0_im(val); | |
449 | gen_movl_reg_T0(s, 14); | |
450 | gen_movl_T0_reg(s, rm); | |
451 | gen_bx(s); | |
452 | break; | |
453 | case 0x5: /* saturating add/subtract */ | |
454 | rd = (insn >> 12) & 0xf; | |
455 | rn = (insn >> 16) & 0xf; | |
456 | gen_movl_T0_reg(s, rn); | |
457 | if (op1 & 2) { | |
458 | gen_movl_T1_reg(s, rn); | |
459 | if (op1 & 1) | |
460 | gen_op_subl_T0_T1_saturate(); | |
461 | else | |
462 | gen_op_addl_T0_T1_saturate(); | |
463 | } | |
464 | gen_movl_T1_reg(s, rm); | |
465 | if (op1 & 1) | |
466 | gen_op_subl_T0_T1_saturate(); | |
467 | else | |
468 | gen_op_addl_T0_T1_saturate(); | |
469 | gen_movl_reg_T0(s, rn); | |
470 | break; | |
471 | case 0x8: /* signed multiply */ | |
472 | case 0xa: | |
473 | case 0xc: | |
474 | case 0xe: | |
475 | rs = (insn >> 8) & 0xf; | |
476 | rn = (insn >> 12) & 0xf; | |
477 | rd = (insn >> 16) & 0xf; | |
478 | if (op1 == 1) { | |
479 | /* (32 * 16) >> 16 */ | |
480 | gen_movl_T0_reg(s, rm); | |
481 | gen_movl_T1_reg(s, rs); | |
482 | if (sh & 4) | |
483 | gen_op_sarl_T1_im(16); | |
484 | else | |
485 | gen_op_sxl_T1(); | |
486 | gen_op_imulw_T0_T1(); | |
487 | if ((sh & 2) == 0) { | |
488 | gen_movl_T1_reg(s, rn); | |
489 | gen_op_addl_T0_T1_setq(); | |
490 | } | |
491 | gen_movl_reg_T0(s, rd); | |
492 | } else { | |
493 | /* 16 * 16 */ | |
494 | gen_movl_T0_reg(s, rm); | |
495 | if (sh & 2) | |
496 | gen_op_sarl_T0_im(16); | |
497 | else | |
498 | gen_op_sxl_T0(); | |
499 | gen_movl_T1_reg(s, rs); | |
500 | if (sh & 4) | |
501 | gen_op_sarl_T1_im(16); | |
502 | else | |
503 | gen_op_sxl_T1(); | |
504 | if (op1 == 2) { | |
505 | gen_op_imull_T0_T1(); | |
506 | gen_op_addq_T0_T1(rn, rd); | |
507 | gen_movl_reg_T0(s, rn); | |
508 | gen_movl_reg_T1(s, rd); | |
509 | } else { | |
510 | gen_op_mul_T0_T1(); | |
511 | if (op1 == 0) { | |
512 | gen_movl_T1_reg(s, rn); | |
513 | gen_op_addl_T0_T1_setq(); | |
514 | } | |
515 | gen_movl_reg_T0(s, rd); | |
516 | } | |
517 | } | |
518 | break; | |
519 | default: | |
520 | goto illegal_op; | |
521 | } | |
522 | } else if (((insn & 0x0e000000) == 0 && | |
523 | (insn & 0x00000090) != 0x90) || | |
524 | ((insn & 0x0e000000) == (1 << 25))) { | |
2c0262af FB |
525 | int set_cc, logic_cc, shiftop; |
526 | ||
527 | op1 = (insn >> 21) & 0xf; | |
528 | set_cc = (insn >> 20) & 1; | |
529 | logic_cc = table_logic_cc[op1] & set_cc; | |
530 | ||
531 | /* data processing instruction */ | |
532 | if (insn & (1 << 25)) { | |
533 | /* immediate operand */ | |
534 | val = insn & 0xff; | |
535 | shift = ((insn >> 8) & 0xf) * 2; | |
536 | if (shift) | |
537 | val = (val >> shift) | (val << (32 - shift)); | |
538 | gen_op_movl_T1_im(val); | |
539 | /* XXX: is CF modified ? */ | |
540 | } else { | |
541 | /* register */ | |
542 | rm = (insn) & 0xf; | |
543 | gen_movl_T1_reg(s, rm); | |
544 | shiftop = (insn >> 5) & 3; | |
545 | if (!(insn & (1 << 4))) { | |
546 | shift = (insn >> 7) & 0x1f; | |
547 | if (shift != 0) { | |
548 | if (logic_cc) { | |
549 | gen_shift_T1_im_cc[shiftop](shift); | |
550 | } else { | |
551 | gen_shift_T1_im[shiftop](shift); | |
552 | } | |
1e8d4eec FB |
553 | } else if (shiftop != 0) { |
554 | if (logic_cc) { | |
555 | gen_shift_T1_0_cc[shiftop](); | |
556 | } else { | |
557 | gen_shift_T1_0[shiftop](); | |
558 | } | |
2c0262af FB |
559 | } |
560 | } else { | |
561 | rs = (insn >> 8) & 0xf; | |
562 | gen_movl_T0_reg(s, rs); | |
563 | if (logic_cc) { | |
564 | gen_shift_T1_T0_cc[shiftop](); | |
565 | } else { | |
566 | gen_shift_T1_T0[shiftop](); | |
567 | } | |
568 | } | |
569 | } | |
570 | if (op1 != 0x0f && op1 != 0x0d) { | |
571 | rn = (insn >> 16) & 0xf; | |
572 | gen_movl_T0_reg(s, rn); | |
573 | } | |
574 | rd = (insn >> 12) & 0xf; | |
575 | switch(op1) { | |
576 | case 0x00: | |
577 | gen_op_andl_T0_T1(); | |
578 | gen_movl_reg_T0(s, rd); | |
579 | if (logic_cc) | |
580 | gen_op_logic_T0_cc(); | |
581 | break; | |
582 | case 0x01: | |
583 | gen_op_xorl_T0_T1(); | |
584 | gen_movl_reg_T0(s, rd); | |
585 | if (logic_cc) | |
586 | gen_op_logic_T0_cc(); | |
587 | break; | |
588 | case 0x02: | |
589 | if (set_cc) | |
590 | gen_op_subl_T0_T1_cc(); | |
591 | else | |
592 | gen_op_subl_T0_T1(); | |
593 | gen_movl_reg_T0(s, rd); | |
594 | break; | |
595 | case 0x03: | |
596 | if (set_cc) | |
597 | gen_op_rsbl_T0_T1_cc(); | |
598 | else | |
599 | gen_op_rsbl_T0_T1(); | |
600 | gen_movl_reg_T0(s, rd); | |
601 | break; | |
602 | case 0x04: | |
603 | if (set_cc) | |
604 | gen_op_addl_T0_T1_cc(); | |
605 | else | |
606 | gen_op_addl_T0_T1(); | |
607 | gen_movl_reg_T0(s, rd); | |
608 | break; | |
609 | case 0x05: | |
610 | if (set_cc) | |
611 | gen_op_adcl_T0_T1_cc(); | |
612 | else | |
613 | gen_op_adcl_T0_T1(); | |
614 | gen_movl_reg_T0(s, rd); | |
615 | break; | |
616 | case 0x06: | |
617 | if (set_cc) | |
618 | gen_op_sbcl_T0_T1_cc(); | |
619 | else | |
620 | gen_op_sbcl_T0_T1(); | |
621 | gen_movl_reg_T0(s, rd); | |
622 | break; | |
623 | case 0x07: | |
624 | if (set_cc) | |
625 | gen_op_rscl_T0_T1_cc(); | |
626 | else | |
627 | gen_op_rscl_T0_T1(); | |
628 | gen_movl_reg_T0(s, rd); | |
629 | break; | |
630 | case 0x08: | |
631 | if (set_cc) { | |
632 | gen_op_andl_T0_T1(); | |
633 | gen_op_logic_T0_cc(); | |
634 | } | |
635 | break; | |
636 | case 0x09: | |
637 | if (set_cc) { | |
638 | gen_op_xorl_T0_T1(); | |
639 | gen_op_logic_T0_cc(); | |
640 | } | |
641 | break; | |
642 | case 0x0a: | |
643 | if (set_cc) { | |
644 | gen_op_subl_T0_T1_cc(); | |
645 | } | |
646 | break; | |
647 | case 0x0b: | |
648 | if (set_cc) { | |
649 | gen_op_addl_T0_T1_cc(); | |
650 | } | |
651 | break; | |
652 | case 0x0c: | |
653 | gen_op_orl_T0_T1(); | |
654 | gen_movl_reg_T0(s, rd); | |
655 | if (logic_cc) | |
656 | gen_op_logic_T0_cc(); | |
657 | break; | |
658 | case 0x0d: | |
659 | gen_movl_reg_T1(s, rd); | |
660 | if (logic_cc) | |
661 | gen_op_logic_T1_cc(); | |
662 | break; | |
663 | case 0x0e: | |
664 | gen_op_bicl_T0_T1(); | |
665 | gen_movl_reg_T0(s, rd); | |
666 | if (logic_cc) | |
667 | gen_op_logic_T0_cc(); | |
668 | break; | |
669 | default: | |
670 | case 0x0f: | |
671 | gen_op_notl_T1(); | |
672 | gen_movl_reg_T1(s, rd); | |
673 | if (logic_cc) | |
674 | gen_op_logic_T1_cc(); | |
675 | break; | |
676 | } | |
677 | } else { | |
678 | /* other instructions */ | |
679 | op1 = (insn >> 24) & 0xf; | |
680 | switch(op1) { | |
681 | case 0x0: | |
682 | case 0x1: | |
99c475ab | 683 | /* multiplies, extra load/stores */ |
2c0262af FB |
684 | sh = (insn >> 5) & 3; |
685 | if (sh == 0) { | |
686 | if (op1 == 0x0) { | |
687 | rd = (insn >> 16) & 0xf; | |
688 | rn = (insn >> 12) & 0xf; | |
689 | rs = (insn >> 8) & 0xf; | |
690 | rm = (insn) & 0xf; | |
99c475ab | 691 | if (((insn >> 22) & 3) == 0) { |
2c0262af FB |
692 | /* 32 bit mul */ |
693 | gen_movl_T0_reg(s, rs); | |
694 | gen_movl_T1_reg(s, rm); | |
695 | gen_op_mul_T0_T1(); | |
696 | if (insn & (1 << 21)) { | |
697 | gen_movl_T1_reg(s, rn); | |
698 | gen_op_addl_T0_T1(); | |
699 | } | |
700 | if (insn & (1 << 20)) | |
701 | gen_op_logic_T0_cc(); | |
702 | gen_movl_reg_T0(s, rd); | |
703 | } else { | |
704 | /* 64 bit mul */ | |
705 | gen_movl_T0_reg(s, rs); | |
706 | gen_movl_T1_reg(s, rm); | |
707 | if (insn & (1 << 22)) | |
2c0262af | 708 | gen_op_imull_T0_T1(); |
2e134c9c FB |
709 | else |
710 | gen_op_mull_T0_T1(); | |
99c475ab | 711 | if (insn & (1 << 21)) /* mult accumulate */ |
2c0262af | 712 | gen_op_addq_T0_T1(rn, rd); |
99c475ab FB |
713 | if (!(insn & (1 << 23))) { /* double accumulate */ |
714 | gen_op_addq_lo_T0_T1(rn); | |
715 | gen_op_addq_lo_T0_T1(rd); | |
716 | } | |
2c0262af FB |
717 | if (insn & (1 << 20)) |
718 | gen_op_logicq_cc(); | |
719 | gen_movl_reg_T0(s, rn); | |
720 | gen_movl_reg_T1(s, rd); | |
721 | } | |
722 | } else { | |
2c0262af FB |
723 | rn = (insn >> 16) & 0xf; |
724 | rd = (insn >> 12) & 0xf; | |
99c475ab FB |
725 | if (insn & (1 << 23)) { |
726 | /* load/store exclusive */ | |
727 | goto illegal_op; | |
2c0262af | 728 | } else { |
99c475ab FB |
729 | /* SWP instruction */ |
730 | rm = (insn) & 0xf; | |
731 | ||
732 | gen_movl_T0_reg(s, rm); | |
733 | gen_movl_T1_reg(s, rn); | |
734 | if (insn & (1 << 22)) { | |
735 | gen_op_swpb_T0_T1(); | |
736 | } else { | |
737 | gen_op_swpl_T0_T1(); | |
738 | } | |
739 | gen_movl_reg_T0(s, rd); | |
2c0262af | 740 | } |
2c0262af FB |
741 | } |
742 | } else { | |
99c475ab | 743 | /* Misc load/store */ |
2c0262af FB |
744 | rn = (insn >> 16) & 0xf; |
745 | rd = (insn >> 12) & 0xf; | |
746 | gen_movl_T1_reg(s, rn); | |
beddab75 FB |
747 | if (insn & (1 << 24)) |
748 | gen_add_datah_offset(s, insn); | |
2c0262af FB |
749 | if (insn & (1 << 20)) { |
750 | /* load */ | |
751 | switch(sh) { | |
752 | case 1: | |
753 | gen_op_lduw_T0_T1(); | |
754 | break; | |
755 | case 2: | |
756 | gen_op_ldsb_T0_T1(); | |
757 | break; | |
758 | default: | |
759 | case 3: | |
760 | gen_op_ldsw_T0_T1(); | |
761 | break; | |
762 | } | |
e748ba4f | 763 | gen_movl_reg_T0(s, rd); |
99c475ab FB |
764 | } else if (sh & 2) { |
765 | /* doubleword */ | |
766 | if (sh & 1) { | |
767 | /* store */ | |
768 | gen_movl_T0_reg(s, rd); | |
769 | gen_op_stl_T0_T1(); | |
770 | gen_op_addl_T1_im(4); | |
771 | gen_movl_T0_reg(s, rd + 1); | |
772 | gen_op_stl_T0_T1(); | |
773 | if ((insn & (1 << 24)) || (insn & (1 << 20))) | |
774 | gen_op_addl_T1_im(-4); | |
775 | } else { | |
776 | /* load */ | |
777 | gen_op_ldl_T0_T1(); | |
778 | gen_movl_reg_T0(s, rd); | |
779 | gen_op_addl_T1_im(4); | |
780 | gen_op_ldl_T0_T1(); | |
781 | gen_movl_reg_T0(s, rd + 1); | |
782 | if ((insn & (1 << 24)) || (insn & (1 << 20))) | |
783 | gen_op_addl_T1_im(-4); | |
784 | } | |
2c0262af FB |
785 | } else { |
786 | /* store */ | |
e748ba4f | 787 | gen_movl_T0_reg(s, rd); |
2c0262af FB |
788 | gen_op_stw_T0_T1(); |
789 | } | |
790 | if (!(insn & (1 << 24))) { | |
791 | gen_add_datah_offset(s, insn); | |
792 | gen_movl_reg_T1(s, rn); | |
793 | } else if (insn & (1 << 21)) { | |
794 | gen_movl_reg_T1(s, rn); | |
795 | } | |
796 | } | |
797 | break; | |
798 | case 0x4: | |
799 | case 0x5: | |
800 | case 0x6: | |
801 | case 0x7: | |
802 | /* load/store byte/word */ | |
803 | rn = (insn >> 16) & 0xf; | |
804 | rd = (insn >> 12) & 0xf; | |
805 | gen_movl_T1_reg(s, rn); | |
806 | if (insn & (1 << 24)) | |
807 | gen_add_data_offset(s, insn); | |
808 | if (insn & (1 << 20)) { | |
809 | /* load */ | |
810 | if (insn & (1 << 22)) | |
811 | gen_op_ldub_T0_T1(); | |
812 | else | |
813 | gen_op_ldl_T0_T1(); | |
99c475ab FB |
814 | if (rd == 15) |
815 | gen_bx(s); | |
816 | else | |
817 | gen_movl_reg_T0(s, rd); | |
2c0262af FB |
818 | } else { |
819 | /* store */ | |
820 | gen_movl_T0_reg(s, rd); | |
821 | if (insn & (1 << 22)) | |
822 | gen_op_stb_T0_T1(); | |
823 | else | |
824 | gen_op_stl_T0_T1(); | |
825 | } | |
826 | if (!(insn & (1 << 24))) { | |
827 | gen_add_data_offset(s, insn); | |
828 | gen_movl_reg_T1(s, rn); | |
829 | } else if (insn & (1 << 21)) | |
830 | gen_movl_reg_T1(s, rn); { | |
831 | } | |
832 | break; | |
833 | case 0x08: | |
834 | case 0x09: | |
835 | { | |
836 | int j, n; | |
837 | /* load/store multiple words */ | |
838 | /* XXX: store correct base if write back */ | |
839 | if (insn & (1 << 22)) | |
840 | goto illegal_op; /* only usable in supervisor mode */ | |
841 | rn = (insn >> 16) & 0xf; | |
842 | gen_movl_T1_reg(s, rn); | |
843 | ||
844 | /* compute total size */ | |
845 | n = 0; | |
846 | for(i=0;i<16;i++) { | |
847 | if (insn & (1 << i)) | |
848 | n++; | |
849 | } | |
850 | /* XXX: test invalid n == 0 case ? */ | |
851 | if (insn & (1 << 23)) { | |
852 | if (insn & (1 << 24)) { | |
853 | /* pre increment */ | |
854 | gen_op_addl_T1_im(4); | |
855 | } else { | |
856 | /* post increment */ | |
857 | } | |
858 | } else { | |
859 | if (insn & (1 << 24)) { | |
860 | /* pre decrement */ | |
861 | gen_op_addl_T1_im(-(n * 4)); | |
862 | } else { | |
863 | /* post decrement */ | |
864 | if (n != 1) | |
865 | gen_op_addl_T1_im(-((n - 1) * 4)); | |
866 | } | |
867 | } | |
868 | j = 0; | |
869 | for(i=0;i<16;i++) { | |
870 | if (insn & (1 << i)) { | |
871 | if (insn & (1 << 20)) { | |
872 | /* load */ | |
873 | gen_op_ldl_T0_T1(); | |
99c475ab FB |
874 | if (i == 15) |
875 | gen_bx(s); | |
876 | else | |
877 | gen_movl_reg_T0(s, i); | |
2c0262af FB |
878 | } else { |
879 | /* store */ | |
880 | if (i == 15) { | |
881 | /* special case: r15 = PC + 12 */ | |
882 | val = (long)s->pc + 8; | |
883 | gen_op_movl_TN_im[0](val); | |
884 | } else { | |
885 | gen_movl_T0_reg(s, i); | |
886 | } | |
887 | gen_op_stl_T0_T1(); | |
888 | } | |
889 | j++; | |
890 | /* no need to add after the last transfer */ | |
891 | if (j != n) | |
892 | gen_op_addl_T1_im(4); | |
893 | } | |
894 | } | |
895 | if (insn & (1 << 21)) { | |
896 | /* write back */ | |
897 | if (insn & (1 << 23)) { | |
898 | if (insn & (1 << 24)) { | |
899 | /* pre increment */ | |
900 | } else { | |
901 | /* post increment */ | |
902 | gen_op_addl_T1_im(4); | |
903 | } | |
904 | } else { | |
905 | if (insn & (1 << 24)) { | |
906 | /* pre decrement */ | |
907 | if (n != 1) | |
908 | gen_op_addl_T1_im(-((n - 1) * 4)); | |
909 | } else { | |
910 | /* post decrement */ | |
911 | gen_op_addl_T1_im(-(n * 4)); | |
912 | } | |
913 | } | |
914 | gen_movl_reg_T1(s, rn); | |
915 | } | |
916 | } | |
917 | break; | |
918 | case 0xa: | |
919 | case 0xb: | |
920 | { | |
99c475ab | 921 | int32_t offset; |
2c0262af FB |
922 | |
923 | /* branch (and link) */ | |
99c475ab | 924 | val = (int32_t)s->pc; |
2c0262af FB |
925 | if (insn & (1 << 24)) { |
926 | gen_op_movl_T0_im(val); | |
927 | gen_op_movl_reg_TN[0][14](); | |
928 | } | |
99c475ab | 929 | offset = (((int32_t)insn << 8) >> 8); |
2c0262af FB |
930 | val += (offset << 2) + 4; |
931 | gen_op_jmp((long)s->tb, val); | |
932 | s->is_jmp = DISAS_TB_JUMP; | |
933 | } | |
934 | break; | |
935 | case 0xf: | |
936 | /* swi */ | |
937 | gen_op_movl_T0_im((long)s->pc); | |
938 | gen_op_movl_reg_TN[0][15](); | |
939 | gen_op_swi(); | |
940 | s->is_jmp = DISAS_JUMP; | |
941 | break; | |
2c0262af FB |
942 | default: |
943 | illegal_op: | |
944 | gen_op_movl_T0_im((long)s->pc - 4); | |
945 | gen_op_movl_reg_TN[0][15](); | |
946 | gen_op_undef_insn(); | |
947 | s->is_jmp = DISAS_JUMP; | |
948 | break; | |
949 | } | |
950 | } | |
951 | } | |
952 | ||
99c475ab FB |
953 | static void disas_thumb_insn(DisasContext *s) |
954 | { | |
955 | uint32_t val, insn, op, rm, rn, rd, shift, cond; | |
956 | int32_t offset; | |
957 | int i; | |
958 | ||
959 | insn = lduw(s->pc); | |
960 | s->pc += 2; | |
961 | ||
962 | switch (insn >> 12) { | |
963 | case 0: case 1: | |
964 | rd = insn & 7; | |
965 | op = (insn >> 11) & 3; | |
966 | if (op == 3) { | |
967 | /* add/subtract */ | |
968 | rn = (insn >> 3) & 7; | |
969 | gen_movl_T0_reg(s, rn); | |
970 | if (insn & (1 << 10)) { | |
971 | /* immediate */ | |
972 | gen_op_movl_T1_im((insn >> 6) & 7); | |
973 | } else { | |
974 | /* reg */ | |
975 | rm = (insn >> 6) & 7; | |
976 | gen_movl_T1_reg(s, rm); | |
977 | } | |
978 | if (insn & (1 << 9)) | |
979 | gen_op_addl_T0_T1_cc(); | |
980 | else | |
981 | gen_op_addl_T0_T1_cc(); | |
982 | gen_movl_reg_T0(s, rd); | |
983 | } else { | |
984 | /* shift immediate */ | |
985 | rm = (insn >> 3) & 7; | |
986 | shift = (insn >> 6) & 0x1f; | |
987 | gen_movl_T0_reg(s, rm); | |
988 | gen_shift_T0_im_thumb[op](shift); | |
989 | gen_movl_reg_T0(s, rd); | |
990 | } | |
991 | break; | |
992 | case 2: case 3: | |
993 | /* arithmetic large immediate */ | |
994 | op = (insn >> 11) & 3; | |
995 | rd = (insn >> 8) & 0x7; | |
996 | if (op == 0) { | |
997 | gen_op_movl_T0_im(insn & 0xff); | |
998 | } else { | |
999 | gen_movl_T0_reg(s, rd); | |
1000 | gen_op_movl_T1_im(insn & 0xff); | |
1001 | } | |
1002 | switch (op) { | |
1003 | case 0: /* mov */ | |
1004 | gen_op_logic_T0_cc(); | |
1005 | break; | |
1006 | case 1: /* cmp */ | |
1007 | gen_op_subl_T0_T1_cc(); | |
1008 | break; | |
1009 | case 2: /* add */ | |
1010 | gen_op_addl_T0_T1_cc(); | |
1011 | break; | |
1012 | case 3: /* sub */ | |
1013 | gen_op_subl_T0_T1_cc(); | |
1014 | break; | |
1015 | } | |
1016 | if (op != 1) | |
1017 | gen_movl_reg_T0(s, rd); | |
1018 | break; | |
1019 | case 4: | |
1020 | if (insn & (1 << 11)) { | |
1021 | rd = (insn >> 8) & 7; | |
1022 | /* load pc-relative */ | |
1023 | val = (insn & 0xff) * 4; | |
1024 | gen_op_movl_T1_im(val); | |
1025 | gen_movl_T2_reg(s, 15); | |
1026 | gen_op_addl_T1_T2(); | |
1027 | gen_op_ldl_T0_T1(); | |
1028 | gen_movl_reg_T0(s, rd); | |
1029 | break; | |
1030 | } | |
1031 | if (insn & (1 << 10)) { | |
1032 | /* data processing extended or blx */ | |
1033 | rd = (insn & 7) | ((insn >> 4) & 8); | |
1034 | rm = (insn >> 3) & 0xf; | |
1035 | op = (insn >> 8) & 3; | |
1036 | switch (op) { | |
1037 | case 0: /* add */ | |
1038 | gen_movl_T0_reg(s, rd); | |
1039 | gen_movl_T1_reg(s, rm); | |
1040 | gen_op_addl_T0_T1(); | |
1041 | gen_movl_reg_T0(s, rd); | |
1042 | break; | |
1043 | case 1: /* cmp */ | |
1044 | gen_movl_T0_reg(s, rd); | |
1045 | gen_movl_T1_reg(s, rm); | |
1046 | gen_op_subl_T0_T1_cc(); | |
1047 | break; | |
1048 | case 2: /* mov/cpy */ | |
1049 | gen_movl_T0_reg(s, rm); | |
1050 | gen_movl_reg_T0(s, rd); | |
1051 | break; | |
1052 | case 3:/* branch [and link] exchange thumb register */ | |
1053 | if (insn & (1 << 7)) { | |
1054 | val = (uint32_t)s->pc | 1; | |
1055 | gen_op_movl_T1_im(val); | |
1056 | gen_movl_reg_T1(s, 14); | |
1057 | } | |
1058 | gen_movl_T0_reg(s, rm); | |
1059 | gen_bx(s); | |
1060 | break; | |
1061 | } | |
1062 | break; | |
1063 | } | |
1064 | ||
1065 | /* data processing register */ | |
1066 | rd = insn & 7; | |
1067 | rm = (insn >> 3) & 7; | |
1068 | op = (insn >> 6) & 0xf; | |
1069 | if (op == 2 || op == 3 || op == 4 || op == 7) { | |
1070 | /* the shift/rotate ops want the operands backwards */ | |
1071 | val = rm; | |
1072 | rm = rd; | |
1073 | rd = val; | |
1074 | val = 1; | |
1075 | } else { | |
1076 | val = 0; | |
1077 | } | |
1078 | ||
1079 | if (op == 9) /* neg */ | |
1080 | gen_op_movl_T0_im(0); | |
1081 | else if (op != 0xf) /* mvn doesn't read its first operand */ | |
1082 | gen_movl_T0_reg(s, rd); | |
1083 | ||
1084 | gen_movl_T1_reg(s, rm); | |
1085 | switch (insn >> 6) { | |
1086 | case 0x0: /* and */ | |
1087 | gen_op_andl_T0_T1(); | |
1088 | gen_op_logic_T0_cc(); | |
1089 | break; | |
1090 | case 0x1: /* eor */ | |
1091 | gen_op_xorl_T0_T1(); | |
1092 | gen_op_logic_T0_cc(); | |
1093 | break; | |
1094 | case 0x2: /* lsl */ | |
1095 | gen_op_shll_T1_T0_cc(); | |
1096 | break; | |
1097 | case 0x3: /* lsr */ | |
1098 | gen_op_shrl_T1_T0_cc(); | |
1099 | break; | |
1100 | case 0x4: /* asr */ | |
1101 | gen_op_sarl_T1_T0_cc(); | |
1102 | break; | |
1103 | case 0x5: /* adc */ | |
1104 | gen_op_adcl_T0_T1_cc(); | |
1105 | break; | |
1106 | case 0x6: /* sbc */ | |
1107 | gen_op_sbcl_T0_T1_cc(); | |
1108 | break; | |
1109 | case 0x7: /* ror */ | |
1110 | gen_op_rorl_T1_T0_cc(); | |
1111 | break; | |
1112 | case 0x8: /* tst */ | |
1113 | gen_op_andl_T0_T1(); | |
1114 | gen_op_logic_T0_cc(); | |
1115 | rd = 16; | |
1116 | case 0x9: /* neg */ | |
1117 | gen_op_rsbl_T0_T1_cc(); | |
1118 | break; | |
1119 | case 0xa: /* cmp */ | |
1120 | gen_op_subl_T0_T1_cc(); | |
1121 | rd = 16; | |
1122 | break; | |
1123 | case 0xb: /* cmn */ | |
1124 | gen_op_addl_T0_T1_cc(); | |
1125 | rd = 16; | |
1126 | break; | |
1127 | case 0xc: /* orr */ | |
1128 | gen_op_orl_T0_T1(); | |
1129 | gen_op_logic_T0_cc(); | |
1130 | break; | |
1131 | case 0xd: /* mul */ | |
1132 | gen_op_mull_T0_T1(); | |
1133 | gen_op_logic_T0_cc(); | |
1134 | break; | |
1135 | case 0xe: /* bic */ | |
1136 | gen_op_bicl_T0_T1(); | |
1137 | gen_op_logic_T0_cc(); | |
1138 | break; | |
1139 | case 0xf: /* mvn */ | |
1140 | gen_op_notl_T1(); | |
1141 | gen_op_logic_T1_cc(); | |
1142 | val = 1; | |
1143 | break; | |
1144 | } | |
1145 | if (rd != 16) { | |
1146 | if (val) | |
1147 | gen_movl_reg_T1(s, rd); | |
1148 | else | |
1149 | gen_movl_reg_T0(s, rd); | |
1150 | } | |
1151 | break; | |
1152 | ||
1153 | case 5: | |
1154 | /* load/store register offset. */ | |
1155 | rd = insn & 7; | |
1156 | rn = (insn >> 3) & 7; | |
1157 | rm = (insn >> 6) & 7; | |
1158 | op = (insn >> 9) & 7; | |
1159 | gen_movl_T1_reg(s, rn); | |
1160 | gen_movl_T2_reg(s, rm); | |
1161 | gen_op_addl_T1_T2(); | |
1162 | ||
1163 | if (op < 3) /* store */ | |
1164 | gen_movl_T0_reg(s, rd); | |
1165 | ||
1166 | switch (op) { | |
1167 | case 0: /* str */ | |
1168 | gen_op_stl_T0_T1(); | |
1169 | break; | |
1170 | case 1: /* strh */ | |
1171 | gen_op_stw_T0_T1(); | |
1172 | break; | |
1173 | case 2: /* strb */ | |
1174 | gen_op_stb_T0_T1(); | |
1175 | break; | |
1176 | case 3: /* ldrsb */ | |
1177 | gen_op_ldsb_T0_T1(); | |
1178 | break; | |
1179 | case 4: /* ldr */ | |
1180 | gen_op_ldl_T0_T1(); | |
1181 | break; | |
1182 | case 5: /* ldrh */ | |
1183 | gen_op_ldsw_T0_T1(); | |
1184 | break; | |
1185 | case 6: /* ldrb */ | |
1186 | gen_op_ldub_T0_T1(); | |
1187 | break; | |
1188 | case 7: /* ldrsh */ | |
1189 | gen_op_ldsw_T0_T1(); | |
1190 | break; | |
1191 | } | |
1192 | if (op >= 3) /* load */ | |
1193 | gen_movl_reg_T0(s, rd); | |
1194 | break; | |
1195 | ||
1196 | case 6: | |
1197 | /* load/store word immediate offset */ | |
1198 | rd = insn & 7; | |
1199 | rn = (insn >> 3) & 7; | |
1200 | gen_movl_T1_reg(s, rn); | |
1201 | val = (insn >> 4) & 0x7c; | |
1202 | gen_op_movl_T2_im(val); | |
1203 | gen_op_addl_T1_T2(); | |
1204 | ||
1205 | if (insn & (1 << 11)) { | |
1206 | /* load */ | |
1207 | gen_op_ldl_T0_T1(); | |
1208 | gen_movl_reg_T0(s, rd); | |
1209 | } else { | |
1210 | /* store */ | |
1211 | gen_movl_T0_reg(s, rd); | |
1212 | gen_op_stl_T0_T1(); | |
1213 | } | |
1214 | break; | |
1215 | ||
1216 | case 7: | |
1217 | /* load/store byte immediate offset */ | |
1218 | rd = insn & 7; | |
1219 | rn = (insn >> 3) & 7; | |
1220 | gen_movl_T1_reg(s, rn); | |
1221 | val = (insn >> 6) & 0x1f; | |
1222 | gen_op_movl_T2_im(val); | |
1223 | gen_op_addl_T1_T2(); | |
1224 | ||
1225 | if (insn & (1 << 11)) { | |
1226 | /* load */ | |
1227 | gen_op_ldub_T0_T1(); | |
1228 | gen_movl_reg_T0(s, rd); | |
1229 | } else { | |
1230 | /* store */ | |
1231 | gen_movl_T0_reg(s, rd); | |
1232 | gen_op_stb_T0_T1(); | |
1233 | } | |
1234 | break; | |
1235 | ||
1236 | case 8: | |
1237 | /* load/store halfword immediate offset */ | |
1238 | rd = insn & 7; | |
1239 | rn = (insn >> 3) & 7; | |
1240 | gen_movl_T1_reg(s, rn); | |
1241 | val = (insn >> 5) & 0x3e; | |
1242 | gen_op_movl_T2_im(val); | |
1243 | gen_op_addl_T1_T2(); | |
1244 | ||
1245 | if (insn & (1 << 11)) { | |
1246 | /* load */ | |
1247 | gen_op_lduw_T0_T1(); | |
1248 | gen_movl_reg_T0(s, rd); | |
1249 | } else { | |
1250 | /* store */ | |
1251 | gen_movl_T0_reg(s, rd); | |
1252 | gen_op_stw_T0_T1(); | |
1253 | } | |
1254 | break; | |
1255 | ||
1256 | case 9: | |
1257 | /* load/store from stack */ | |
1258 | rd = (insn >> 8) & 7; | |
1259 | gen_movl_T1_reg(s, 13); | |
1260 | val = (insn & 0xff) * 4; | |
1261 | gen_op_movl_T2_im(val); | |
1262 | gen_op_addl_T1_T2(); | |
1263 | ||
1264 | if (insn & (1 << 11)) { | |
1265 | /* load */ | |
1266 | gen_op_ldl_T0_T1(); | |
1267 | gen_movl_reg_T0(s, rd); | |
1268 | } else { | |
1269 | /* store */ | |
1270 | gen_movl_T0_reg(s, rd); | |
1271 | gen_op_stl_T0_T1(); | |
1272 | } | |
1273 | break; | |
1274 | ||
1275 | case 10: | |
1276 | /* add to high reg */ | |
1277 | rd = (insn >> 8) & 7; | |
1278 | if (insn & (1 << 11)) | |
1279 | rm = 13; /* sp */ | |
1280 | else | |
1281 | rm = 15; /* pc */ | |
1282 | gen_movl_T0_reg(s, rm); | |
1283 | val = (insn & 0xff) * 4; | |
1284 | gen_op_movl_T1_im(val); | |
1285 | gen_op_addl_T0_T1(); | |
1286 | gen_movl_reg_T0(s, rd); | |
1287 | break; | |
1288 | ||
1289 | case 11: | |
1290 | /* misc */ | |
1291 | op = (insn >> 8) & 0xf; | |
1292 | switch (op) { | |
1293 | case 0: | |
1294 | /* adjust stack pointer */ | |
1295 | gen_movl_T1_reg(s, 13); | |
1296 | val = (insn & 0x7f) * 4; | |
1297 | if (insn & (1 << 7)) | |
1298 | val = -(int32_t)val; | |
1299 | gen_op_movl_T2_im(val); | |
1300 | gen_op_addl_T1_T2(); | |
1301 | gen_movl_reg_T1(s, 13); | |
1302 | break; | |
1303 | ||
1304 | case 4: case 5: case 0xc: case 0xd: | |
1305 | /* push/pop */ | |
1306 | gen_movl_T1_reg(s, 13); | |
1307 | if (insn & (1 << 11)) | |
1308 | val = 4; | |
1309 | else | |
1310 | val = -4; | |
1311 | gen_op_movl_T2_im(val); | |
1312 | for (i = 0; i < 8; i++) { | |
1313 | if (insn & (1 << i)) { | |
1314 | if (insn & (1 << 11)) { | |
1315 | /* pop */ | |
1316 | gen_op_ldl_T0_T1(); | |
1317 | gen_movl_reg_T0(s, i); | |
1318 | } else { | |
1319 | /* push */ | |
1320 | gen_movl_T0_reg(s, i); | |
1321 | gen_op_stl_T0_T1(); | |
1322 | } | |
1323 | /* move to the next address */ | |
1324 | gen_op_addl_T1_T2(); | |
1325 | } | |
1326 | } | |
1327 | if (insn & (1 << 8)) { | |
1328 | if (insn & (1 << 11)) { | |
1329 | /* pop pc */ | |
1330 | gen_op_ldl_T0_T1(); | |
1331 | /* don't set the pc until the rest of the instruction | |
1332 | has completed */ | |
1333 | } else { | |
1334 | /* push lr */ | |
1335 | gen_movl_T0_reg(s, 14); | |
1336 | gen_op_stl_T0_T1(); | |
1337 | } | |
1338 | gen_op_addl_T1_T2(); | |
1339 | } | |
1340 | ||
1341 | /* write back the new stack pointer */ | |
1342 | gen_movl_reg_T1(s, 13); | |
1343 | /* set the new PC value */ | |
1344 | if ((insn & 0x0900) == 0x0900) | |
1345 | gen_bx(s); | |
1346 | break; | |
1347 | ||
1348 | default: | |
1349 | goto undef; | |
1350 | } | |
1351 | break; | |
1352 | ||
1353 | case 12: | |
1354 | /* load/store multiple */ | |
1355 | rn = (insn >> 8) & 0x7; | |
1356 | gen_movl_T1_reg(s, rn); | |
1357 | gen_op_movl_T2_im(4); | |
1358 | val = 0; | |
1359 | for (i = 0; i < 8; i++) { | |
1360 | if (insn & (1 << i)) { | |
1361 | /* advance to the next address */ | |
1362 | if (val) | |
1363 | gen_op_addl_T1_T2(); | |
1364 | else | |
1365 | val = 1; | |
1366 | if (insn & (1 << 11)) { | |
1367 | /* load */ | |
1368 | gen_op_ldl_T0_T1(); | |
1369 | gen_movl_reg_T0(s, i); | |
1370 | } else { | |
1371 | /* store */ | |
1372 | gen_movl_T0_reg(s, i); | |
1373 | gen_op_stl_T0_T1(); | |
1374 | } | |
1375 | } | |
1376 | } | |
1377 | break; | |
1378 | ||
1379 | case 13: | |
1380 | /* conditional branch or swi */ | |
1381 | cond = (insn >> 8) & 0xf; | |
1382 | if (cond == 0xe) | |
1383 | goto undef; | |
1384 | ||
1385 | if (cond == 0xf) { | |
1386 | /* swi */ | |
1387 | gen_op_movl_T0_im((long)s->pc | 1); | |
1388 | /* Don't set r15. */ | |
1389 | gen_op_movl_reg_TN[0][15](); | |
1390 | gen_op_swi(); | |
1391 | s->is_jmp = DISAS_JUMP; | |
1392 | break; | |
1393 | } | |
1394 | /* generate a conditional jump to next instruction */ | |
1395 | gen_test_cc[cond ^ 1]((long)s->tb, (long)s->pc); | |
1396 | s->is_jmp = DISAS_JUMP_NEXT; | |
1397 | gen_movl_T1_reg(s, 15); | |
1398 | ||
1399 | /* jump to the offset */ | |
1400 | val = (uint32_t)s->pc; | |
1401 | offset = ((int32_t)insn << 24) >> 24; | |
1402 | val += (offset << 1) + 2; | |
1403 | gen_op_jmp((long)s->tb, val); | |
1404 | s->is_jmp = DISAS_TB_JUMP; | |
1405 | break; | |
1406 | ||
1407 | case 14: | |
1408 | /* unconditional branch */ | |
1409 | if (insn & (1 << 11)) | |
1410 | goto undef; /* Second half of a blx */ | |
1411 | val = (uint32_t)s->pc; | |
1412 | offset = ((int32_t)insn << 21) >> 21; | |
1413 | val += (offset << 1) + 2; | |
1414 | gen_op_jmp((long)s->tb, val); | |
1415 | s->is_jmp = DISAS_TB_JUMP; | |
1416 | break; | |
1417 | ||
1418 | case 15: | |
1419 | /* branch and link [and switch to arm] */ | |
1420 | offset = ((int32_t)insn << 21) >> 10; | |
1421 | insn = lduw(s->pc); | |
1422 | offset |= insn & 0x7ff; | |
1423 | ||
1424 | val = (uint32_t)s->pc + 2; | |
1425 | gen_op_movl_T1_im(val | 1); | |
1426 | gen_movl_reg_T1(s, 14); | |
1427 | ||
1428 | val += offset; | |
1429 | if (insn & (1 << 11)) { | |
1430 | /* bl */ | |
1431 | gen_op_jmp((long)s->tb, val); | |
1432 | s->is_jmp = DISAS_TB_JUMP; | |
1433 | } else { | |
1434 | /* blx */ | |
1435 | gen_op_movl_T0_im(val); | |
1436 | gen_bx(s); | |
1437 | } | |
1438 | } | |
1439 | return; | |
1440 | undef: | |
1441 | gen_op_movl_T0_im((long)s->pc - 4); | |
1442 | gen_op_movl_reg_TN[0][15](); | |
1443 | gen_op_undef_insn(); | |
1444 | s->is_jmp = DISAS_JUMP; | |
1445 | } | |
1446 | ||
2c0262af FB |
1447 | /* generate intermediate code in gen_opc_buf and gen_opparam_buf for |
1448 | basic block 'tb'. If search_pc is TRUE, also generate PC | |
1449 | information for each intermediate instruction. */ | |
1450 | static inline int gen_intermediate_code_internal(CPUState *env, | |
1451 | TranslationBlock *tb, | |
1452 | int search_pc) | |
1453 | { | |
1454 | DisasContext dc1, *dc = &dc1; | |
1455 | uint16_t *gen_opc_end; | |
1456 | int j, lj; | |
0fa85d43 | 1457 | target_ulong pc_start; |
2c0262af FB |
1458 | |
1459 | /* generate intermediate code */ | |
0fa85d43 | 1460 | pc_start = tb->pc; |
2c0262af FB |
1461 | |
1462 | dc->tb = tb; | |
1463 | ||
1464 | gen_opc_ptr = gen_opc_buf; | |
1465 | gen_opc_end = gen_opc_buf + OPC_MAX_SIZE; | |
1466 | gen_opparam_ptr = gen_opparam_buf; | |
1467 | ||
1468 | dc->is_jmp = DISAS_NEXT; | |
1469 | dc->pc = pc_start; | |
1470 | lj = -1; | |
1471 | do { | |
1472 | if (search_pc) { | |
1473 | j = gen_opc_ptr - gen_opc_buf; | |
1474 | if (lj < j) { | |
1475 | lj++; | |
1476 | while (lj < j) | |
1477 | gen_opc_instr_start[lj++] = 0; | |
1478 | } | |
0fa85d43 | 1479 | gen_opc_pc[lj] = dc->pc; |
2c0262af FB |
1480 | gen_opc_instr_start[lj] = 1; |
1481 | } | |
99c475ab FB |
1482 | if (env->thumb) |
1483 | disas_thumb_insn(dc); | |
1484 | else | |
1485 | disas_arm_insn(dc); | |
2c0262af FB |
1486 | } while (!dc->is_jmp && gen_opc_ptr < gen_opc_end && |
1487 | (dc->pc - pc_start) < (TARGET_PAGE_SIZE - 32)); | |
1488 | switch(dc->is_jmp) { | |
1489 | case DISAS_JUMP_NEXT: | |
1490 | case DISAS_NEXT: | |
1491 | gen_op_jmp((long)dc->tb, (long)dc->pc); | |
1492 | break; | |
1493 | default: | |
1494 | case DISAS_JUMP: | |
99c475ab | 1495 | case DISAS_UPDATE: |
2c0262af FB |
1496 | /* indicate that the hash table must be used to find the next TB */ |
1497 | gen_op_movl_T0_0(); | |
1498 | gen_op_exit_tb(); | |
1499 | break; | |
1500 | case DISAS_TB_JUMP: | |
1501 | /* nothing more to generate */ | |
1502 | break; | |
1503 | } | |
1504 | *gen_opc_ptr = INDEX_op_end; | |
1505 | ||
1506 | #ifdef DEBUG_DISAS | |
e19e89a5 | 1507 | if (loglevel & CPU_LOG_TB_IN_ASM) { |
2c0262af FB |
1508 | fprintf(logfile, "----------------\n"); |
1509 | fprintf(logfile, "IN: %s\n", lookup_symbol(pc_start)); | |
0fa85d43 | 1510 | target_disas(logfile, pc_start, dc->pc - pc_start, 0); |
2c0262af | 1511 | fprintf(logfile, "\n"); |
e19e89a5 FB |
1512 | if (loglevel & (CPU_LOG_TB_OP)) { |
1513 | fprintf(logfile, "OP:\n"); | |
1514 | dump_ops(gen_opc_buf, gen_opparam_buf); | |
1515 | fprintf(logfile, "\n"); | |
1516 | } | |
2c0262af FB |
1517 | } |
1518 | #endif | |
1519 | if (!search_pc) | |
1520 | tb->size = dc->pc - pc_start; | |
1521 | return 0; | |
1522 | } | |
1523 | ||
1524 | int gen_intermediate_code(CPUState *env, TranslationBlock *tb) | |
1525 | { | |
1526 | return gen_intermediate_code_internal(env, tb, 0); | |
1527 | } | |
1528 | ||
1529 | int gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb) | |
1530 | { | |
1531 | return gen_intermediate_code_internal(env, tb, 1); | |
1532 | } | |
1533 | ||
1534 | CPUARMState *cpu_arm_init(void) | |
1535 | { | |
1536 | CPUARMState *env; | |
1537 | ||
1538 | cpu_exec_init(); | |
1539 | ||
1540 | env = malloc(sizeof(CPUARMState)); | |
1541 | if (!env) | |
1542 | return NULL; | |
1543 | memset(env, 0, sizeof(CPUARMState)); | |
7496f526 | 1544 | cpu_single_env = env; |
2c0262af FB |
1545 | return env; |
1546 | } | |
1547 | ||
1548 | void cpu_arm_close(CPUARMState *env) | |
1549 | { | |
1550 | free(env); | |
1551 | } | |
1552 | ||
7fe48483 FB |
1553 | void cpu_dump_state(CPUState *env, FILE *f, |
1554 | int (*cpu_fprintf)(FILE *f, const char *fmt, ...), | |
1555 | int flags) | |
2c0262af FB |
1556 | { |
1557 | int i; | |
1558 | ||
1559 | for(i=0;i<16;i++) { | |
7fe48483 | 1560 | cpu_fprintf(f, "R%02d=%08x", i, env->regs[i]); |
2c0262af | 1561 | if ((i % 4) == 3) |
7fe48483 | 1562 | cpu_fprintf(f, "\n"); |
2c0262af | 1563 | else |
7fe48483 | 1564 | cpu_fprintf(f, " "); |
2c0262af | 1565 | } |
7fe48483 | 1566 | cpu_fprintf(f, "PSR=%08x %c%c%c%c\n", |
2c0262af FB |
1567 | env->cpsr, |
1568 | env->cpsr & (1 << 31) ? 'N' : '-', | |
1569 | env->cpsr & (1 << 30) ? 'Z' : '-', | |
1570 | env->cpsr & (1 << 29) ? 'C' : '-', | |
1571 | env->cpsr & (1 << 28) ? 'V' : '-'); | |
1572 | } | |
a6b025d3 FB |
1573 | |
1574 | target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr) | |
1575 | { | |
1576 | return addr; | |
1577 | } |