root / target-cris / translate_v10.c @ 7371d56f
History | View | Annotate | Download (40.7 kB)
1 |
/*
|
---|---|
2 |
* CRISv10 emulation for qemu: main translation routines.
|
3 |
*
|
4 |
* Copyright (c) 2010 AXIS Communications AB
|
5 |
* Written by Edgar E. Iglesias.
|
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, see <http://www.gnu.org/licenses/>.
|
19 |
*/
|
20 |
|
21 |
#include "crisv10-decode.h" |
22 |
|
23 |
static const char *regnames_v10[] = |
24 |
{ |
25 |
"$r0", "$r1", "$r2", "$r3", |
26 |
"$r4", "$r5", "$r6", "$r7", |
27 |
"$r8", "$r9", "$r10", "$r11", |
28 |
"$r12", "$r13", "$sp", "$pc", |
29 |
}; |
30 |
|
31 |
static const char *pregnames_v10[] = |
32 |
{ |
33 |
"$bz", "$vr", "$p2", "$p3", |
34 |
"$wz", "$ccr", "$p6-prefix", "$mof", |
35 |
"$dz", "$ibr", "$irp", "$srp", |
36 |
"$bar", "$dccr", "$brp", "$usp", |
37 |
}; |
38 |
|
39 |
/* We need this table to handle preg-moves with implicit width. */
|
40 |
static int preg_sizes_v10[] = { |
41 |
1, /* bz. */ |
42 |
1, /* vr. */ |
43 |
1, /* pid. */ |
44 |
1, /* srs. */ |
45 |
2, /* wz. */ |
46 |
2, 2, 4, |
47 |
4, 4, 4, 4, |
48 |
4, 4, 4, 4, |
49 |
}; |
50 |
|
51 |
static inline int dec10_size(unsigned int size) |
52 |
{ |
53 |
size++; |
54 |
if (size == 3) |
55 |
size++; |
56 |
return size;
|
57 |
} |
58 |
|
59 |
static inline void cris_illegal_insn(DisasContext *dc) |
60 |
{ |
61 |
qemu_log("illegal insn at pc=%x\n", dc->pc);
|
62 |
t_gen_raise_exception(EXCP_BREAK); |
63 |
} |
64 |
|
65 |
static void gen_store_v10_conditional(DisasContext *dc, TCGv addr, TCGv val, |
66 |
unsigned int size, int mem_index) |
67 |
{ |
68 |
int l1 = gen_new_label();
|
69 |
TCGv taddr = tcg_temp_local_new(); |
70 |
TCGv tval = tcg_temp_local_new(); |
71 |
TCGv t1 = tcg_temp_local_new(); |
72 |
dc->postinc = 0;
|
73 |
cris_evaluate_flags(dc); |
74 |
|
75 |
tcg_gen_mov_tl(taddr, addr); |
76 |
tcg_gen_mov_tl(tval, val); |
77 |
|
78 |
/* Store only if F flag isn't set */
|
79 |
tcg_gen_andi_tl(t1, cpu_PR[PR_CCS], F_FLAG_V10); |
80 |
tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1);
|
81 |
if (size == 1) { |
82 |
tcg_gen_qemu_st8(tval, taddr, mem_index); |
83 |
} else if (size == 2) { |
84 |
tcg_gen_qemu_st16(tval, taddr, mem_index); |
85 |
} else {
|
86 |
tcg_gen_qemu_st32(tval, taddr, mem_index); |
87 |
} |
88 |
gen_set_label(l1); |
89 |
tcg_gen_shri_tl(t1, t1, 1); /* shift F to P position */ |
90 |
tcg_gen_or_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], t1); /*P=F*/
|
91 |
tcg_temp_free(t1); |
92 |
tcg_temp_free(tval); |
93 |
tcg_temp_free(taddr); |
94 |
} |
95 |
|
96 |
static void gen_store_v10(DisasContext *dc, TCGv addr, TCGv val, |
97 |
unsigned int size) |
98 |
{ |
99 |
int mem_index = cpu_mmu_index(dc->env);
|
100 |
|
101 |
/* If we get a fault on a delayslot we must keep the jmp state in
|
102 |
the cpu-state to be able to re-execute the jmp. */
|
103 |
if (dc->delayed_branch == 1) { |
104 |
cris_store_direct_jmp(dc); |
105 |
} |
106 |
|
107 |
/* Conditional writes. We only support the kind were X is known
|
108 |
at translation time. */
|
109 |
if (dc->flagx_known && dc->flags_x) {
|
110 |
gen_store_v10_conditional(dc, addr, val, size, mem_index); |
111 |
return;
|
112 |
} |
113 |
|
114 |
if (size == 1) { |
115 |
tcg_gen_qemu_st8(val, addr, mem_index); |
116 |
} else if (size == 2) { |
117 |
tcg_gen_qemu_st16(val, addr, mem_index); |
118 |
} else {
|
119 |
tcg_gen_qemu_st32(val, addr, mem_index); |
120 |
} |
121 |
} |
122 |
|
123 |
|
124 |
/* Prefix flag and register are used to handle the more complex
|
125 |
addressing modes. */
|
126 |
static void cris_set_prefix(DisasContext *dc) |
127 |
{ |
128 |
dc->clear_prefix = 0;
|
129 |
dc->tb_flags |= PFIX_FLAG; |
130 |
tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], PFIX_FLAG); |
131 |
|
132 |
/* prefix insns dont clear the x flag. */
|
133 |
dc->clear_x = 0;
|
134 |
cris_lock_irq(dc); |
135 |
} |
136 |
|
137 |
static void crisv10_prepare_memaddr(DisasContext *dc, |
138 |
TCGv addr, unsigned int size) |
139 |
{ |
140 |
if (dc->tb_flags & PFIX_FLAG) {
|
141 |
tcg_gen_mov_tl(addr, cpu_PR[PR_PREFIX]); |
142 |
} else {
|
143 |
tcg_gen_mov_tl(addr, cpu_R[dc->src]); |
144 |
} |
145 |
} |
146 |
|
147 |
static unsigned int crisv10_post_memaddr(DisasContext *dc, unsigned int size) |
148 |
{ |
149 |
unsigned int insn_len = 0; |
150 |
|
151 |
if (dc->tb_flags & PFIX_FLAG) {
|
152 |
if (dc->mode == CRISV10_MODE_AUTOINC) {
|
153 |
tcg_gen_mov_tl(cpu_R[dc->src], cpu_PR[PR_PREFIX]); |
154 |
} |
155 |
} else {
|
156 |
if (dc->mode == CRISV10_MODE_AUTOINC) {
|
157 |
if (dc->src == 15) { |
158 |
insn_len += size & ~1;
|
159 |
} else {
|
160 |
tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], size); |
161 |
} |
162 |
} |
163 |
} |
164 |
return insn_len;
|
165 |
} |
166 |
|
167 |
static int dec10_prep_move_m(CPUCRISState *env, DisasContext *dc, |
168 |
int s_ext, int memsize, TCGv dst) |
169 |
{ |
170 |
unsigned int rs; |
171 |
uint32_t imm; |
172 |
int is_imm;
|
173 |
int insn_len = 0; |
174 |
|
175 |
rs = dc->src; |
176 |
is_imm = rs == 15 && !(dc->tb_flags & PFIX_FLAG);
|
177 |
LOG_DIS("rs=%d rd=%d is_imm=%d mode=%d pfix=%d\n",
|
178 |
rs, dc->dst, is_imm, dc->mode, dc->tb_flags & PFIX_FLAG); |
179 |
|
180 |
/* Load [$rs] onto T1. */
|
181 |
if (is_imm) {
|
182 |
if (memsize != 4) { |
183 |
if (s_ext) {
|
184 |
if (memsize == 1) |
185 |
imm = cpu_ldsb_code(env, dc->pc + 2);
|
186 |
else
|
187 |
imm = cpu_ldsw_code(env, dc->pc + 2);
|
188 |
} else {
|
189 |
if (memsize == 1) |
190 |
imm = cpu_ldub_code(env, dc->pc + 2);
|
191 |
else
|
192 |
imm = cpu_lduw_code(env, dc->pc + 2);
|
193 |
} |
194 |
} else
|
195 |
imm = cpu_ldl_code(env, dc->pc + 2);
|
196 |
|
197 |
tcg_gen_movi_tl(dst, imm); |
198 |
|
199 |
if (dc->mode == CRISV10_MODE_AUTOINC) {
|
200 |
insn_len += memsize; |
201 |
if (memsize == 1) |
202 |
insn_len++; |
203 |
tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len); |
204 |
} |
205 |
} else {
|
206 |
TCGv addr; |
207 |
|
208 |
addr = tcg_temp_new(); |
209 |
cris_flush_cc_state(dc); |
210 |
crisv10_prepare_memaddr(dc, addr, memsize); |
211 |
gen_load(dc, dst, addr, memsize, 0);
|
212 |
if (s_ext)
|
213 |
t_gen_sext(dst, dst, memsize); |
214 |
else
|
215 |
t_gen_zext(dst, dst, memsize); |
216 |
insn_len += crisv10_post_memaddr(dc, memsize); |
217 |
tcg_temp_free(addr); |
218 |
} |
219 |
|
220 |
if (dc->mode == CRISV10_MODE_INDIRECT && (dc->tb_flags & PFIX_FLAG)) {
|
221 |
dc->dst = dc->src; |
222 |
} |
223 |
return insn_len;
|
224 |
} |
225 |
|
226 |
static unsigned int dec10_quick_imm(DisasContext *dc) |
227 |
{ |
228 |
int32_t imm, simm; |
229 |
int op;
|
230 |
|
231 |
/* sign extend. */
|
232 |
imm = dc->ir & ((1 << 6) - 1); |
233 |
simm = (int8_t) (imm << 2);
|
234 |
simm >>= 2;
|
235 |
switch (dc->opcode) {
|
236 |
case CRISV10_QIMM_BDAP_R0:
|
237 |
case CRISV10_QIMM_BDAP_R1:
|
238 |
case CRISV10_QIMM_BDAP_R2:
|
239 |
case CRISV10_QIMM_BDAP_R3:
|
240 |
simm = (int8_t)dc->ir; |
241 |
LOG_DIS("bdap %d $r%d\n", simm, dc->dst);
|
242 |
LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
|
243 |
dc->pc, dc->mode, dc->opcode, dc->src, dc->dst); |
244 |
cris_set_prefix(dc); |
245 |
if (dc->dst == 15) { |
246 |
tcg_gen_movi_tl(cpu_PR[PR_PREFIX], dc->pc + 2 + simm);
|
247 |
} else {
|
248 |
tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm); |
249 |
} |
250 |
break;
|
251 |
|
252 |
case CRISV10_QIMM_MOVEQ:
|
253 |
LOG_DIS("moveq %d, $r%d\n", simm, dc->dst);
|
254 |
|
255 |
cris_cc_mask(dc, CC_MASK_NZVC); |
256 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], |
257 |
cpu_R[dc->dst], tcg_const_tl(simm), 4);
|
258 |
break;
|
259 |
case CRISV10_QIMM_CMPQ:
|
260 |
LOG_DIS("cmpq %d, $r%d\n", simm, dc->dst);
|
261 |
|
262 |
cris_cc_mask(dc, CC_MASK_NZVC); |
263 |
cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst], |
264 |
cpu_R[dc->dst], tcg_const_tl(simm), 4);
|
265 |
break;
|
266 |
case CRISV10_QIMM_ADDQ:
|
267 |
LOG_DIS("addq %d, $r%d\n", imm, dc->dst);
|
268 |
|
269 |
cris_cc_mask(dc, CC_MASK_NZVC); |
270 |
cris_alu(dc, CC_OP_ADD, cpu_R[dc->dst], |
271 |
cpu_R[dc->dst], tcg_const_tl(imm), 4);
|
272 |
break;
|
273 |
case CRISV10_QIMM_ANDQ:
|
274 |
LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
|
275 |
|
276 |
cris_cc_mask(dc, CC_MASK_NZVC); |
277 |
cris_alu(dc, CC_OP_AND, cpu_R[dc->dst], |
278 |
cpu_R[dc->dst], tcg_const_tl(simm), 4);
|
279 |
break;
|
280 |
case CRISV10_QIMM_ASHQ:
|
281 |
LOG_DIS("ashq %d, $r%d\n", simm, dc->dst);
|
282 |
|
283 |
cris_cc_mask(dc, CC_MASK_NZVC); |
284 |
op = imm & (1 << 5); |
285 |
imm &= 0x1f;
|
286 |
if (op) {
|
287 |
cris_alu(dc, CC_OP_ASR, cpu_R[dc->dst], |
288 |
cpu_R[dc->dst], tcg_const_tl(imm), 4);
|
289 |
} else {
|
290 |
/* BTST */
|
291 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
292 |
gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->dst], |
293 |
tcg_const_tl(imm), cpu_PR[PR_CCS]); |
294 |
} |
295 |
break;
|
296 |
case CRISV10_QIMM_LSHQ:
|
297 |
LOG_DIS("lshq %d, $r%d\n", simm, dc->dst);
|
298 |
|
299 |
op = CC_OP_LSL; |
300 |
if (imm & (1 << 5)) { |
301 |
op = CC_OP_LSR; |
302 |
} |
303 |
imm &= 0x1f;
|
304 |
cris_cc_mask(dc, CC_MASK_NZVC); |
305 |
cris_alu(dc, op, cpu_R[dc->dst], |
306 |
cpu_R[dc->dst], tcg_const_tl(imm), 4);
|
307 |
break;
|
308 |
case CRISV10_QIMM_SUBQ:
|
309 |
LOG_DIS("subq %d, $r%d\n", imm, dc->dst);
|
310 |
|
311 |
cris_cc_mask(dc, CC_MASK_NZVC); |
312 |
cris_alu(dc, CC_OP_SUB, cpu_R[dc->dst], |
313 |
cpu_R[dc->dst], tcg_const_tl(imm), 4);
|
314 |
break;
|
315 |
case CRISV10_QIMM_ORQ:
|
316 |
LOG_DIS("andq %d, $r%d\n", simm, dc->dst);
|
317 |
|
318 |
cris_cc_mask(dc, CC_MASK_NZVC); |
319 |
cris_alu(dc, CC_OP_OR, cpu_R[dc->dst], |
320 |
cpu_R[dc->dst], tcg_const_tl(simm), 4);
|
321 |
break;
|
322 |
|
323 |
case CRISV10_QIMM_BCC_R0:
|
324 |
case CRISV10_QIMM_BCC_R1:
|
325 |
case CRISV10_QIMM_BCC_R2:
|
326 |
case CRISV10_QIMM_BCC_R3:
|
327 |
imm = dc->ir & 0xff;
|
328 |
/* bit 0 is a sign bit. */
|
329 |
if (imm & 1) { |
330 |
imm |= 0xffffff00; /* sign extend. */ |
331 |
imm &= ~1; /* get rid of the sign bit. */ |
332 |
} |
333 |
imm += 2;
|
334 |
LOG_DIS("b%s %d\n", cc_name(dc->cond), imm);
|
335 |
|
336 |
cris_cc_mask(dc, 0);
|
337 |
cris_prepare_cc_branch(dc, imm, dc->cond); |
338 |
break;
|
339 |
|
340 |
default:
|
341 |
LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n",
|
342 |
dc->pc, dc->mode, dc->opcode, dc->src, dc->dst); |
343 |
cpu_abort(dc->env, "Unhandled quickimm\n");
|
344 |
break;
|
345 |
} |
346 |
return 2; |
347 |
} |
348 |
|
349 |
static unsigned int dec10_setclrf(DisasContext *dc) |
350 |
{ |
351 |
uint32_t flags; |
352 |
unsigned int set = ~dc->opcode & 1; |
353 |
|
354 |
flags = EXTRACT_FIELD(dc->ir, 0, 3) |
355 |
| (EXTRACT_FIELD(dc->ir, 12, 15) << 4); |
356 |
LOG_DIS("%s set=%d flags=%x\n", __func__, set, flags);
|
357 |
|
358 |
|
359 |
if (flags & X_FLAG) {
|
360 |
dc->flagx_known = 1;
|
361 |
if (set)
|
362 |
dc->flags_x = X_FLAG; |
363 |
else
|
364 |
dc->flags_x = 0;
|
365 |
} |
366 |
|
367 |
cris_evaluate_flags (dc); |
368 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
369 |
cris_update_cc_x(dc); |
370 |
tcg_gen_movi_tl(cc_op, dc->cc_op); |
371 |
|
372 |
if (set) {
|
373 |
tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags); |
374 |
} else {
|
375 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], |
376 |
~(flags|F_FLAG_V10|P_FLAG_V10)); |
377 |
} |
378 |
|
379 |
dc->flags_uptodate = 1;
|
380 |
dc->clear_x = 0;
|
381 |
cris_lock_irq(dc); |
382 |
return 2; |
383 |
} |
384 |
|
385 |
static inline void dec10_reg_prep_sext(DisasContext *dc, int size, int sext, |
386 |
TCGv dd, TCGv ds, TCGv sd, TCGv ss) |
387 |
{ |
388 |
if (sext) {
|
389 |
t_gen_sext(dd, sd, size); |
390 |
t_gen_sext(ds, ss, size); |
391 |
} else {
|
392 |
t_gen_zext(dd, sd, size); |
393 |
t_gen_zext(ds, ss, size); |
394 |
} |
395 |
} |
396 |
|
397 |
static void dec10_reg_alu(DisasContext *dc, int op, int size, int sext) |
398 |
{ |
399 |
TCGv t[2];
|
400 |
|
401 |
t[0] = tcg_temp_new();
|
402 |
t[1] = tcg_temp_new();
|
403 |
dec10_reg_prep_sext(dc, size, sext, |
404 |
t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]); |
405 |
|
406 |
if (op == CC_OP_LSL || op == CC_OP_LSR || op == CC_OP_ASR) {
|
407 |
tcg_gen_andi_tl(t[1], t[1], 63); |
408 |
} |
409 |
|
410 |
assert(dc->dst != 15);
|
411 |
cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], size); |
412 |
tcg_temp_free(t[0]);
|
413 |
tcg_temp_free(t[1]);
|
414 |
} |
415 |
|
416 |
static void dec10_reg_bound(DisasContext *dc, int size) |
417 |
{ |
418 |
TCGv t; |
419 |
|
420 |
t = tcg_temp_local_new(); |
421 |
t_gen_zext(t, cpu_R[dc->src], size); |
422 |
cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
|
423 |
tcg_temp_free(t); |
424 |
} |
425 |
|
426 |
static void dec10_reg_mul(DisasContext *dc, int size, int sext) |
427 |
{ |
428 |
int op = sext ? CC_OP_MULS : CC_OP_MULU;
|
429 |
TCGv t[2];
|
430 |
|
431 |
t[0] = tcg_temp_new();
|
432 |
t[1] = tcg_temp_new();
|
433 |
dec10_reg_prep_sext(dc, size, sext, |
434 |
t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]); |
435 |
|
436 |
cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], 4); |
437 |
|
438 |
tcg_temp_free(t[0]);
|
439 |
tcg_temp_free(t[1]);
|
440 |
} |
441 |
|
442 |
|
443 |
static void dec10_reg_movs(DisasContext *dc) |
444 |
{ |
445 |
int size = (dc->size & 1) + 1; |
446 |
TCGv t; |
447 |
|
448 |
LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
|
449 |
cris_cc_mask(dc, CC_MASK_NZVC); |
450 |
|
451 |
t = tcg_temp_new(); |
452 |
if (dc->ir & 32) |
453 |
t_gen_sext(t, cpu_R[dc->src], size); |
454 |
else
|
455 |
t_gen_zext(t, cpu_R[dc->src], size); |
456 |
|
457 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
|
458 |
tcg_temp_free(t); |
459 |
} |
460 |
|
461 |
static void dec10_reg_alux(DisasContext *dc, int op) |
462 |
{ |
463 |
int size = (dc->size & 1) + 1; |
464 |
TCGv t; |
465 |
|
466 |
LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst);
|
467 |
cris_cc_mask(dc, CC_MASK_NZVC); |
468 |
|
469 |
t = tcg_temp_new(); |
470 |
if (dc->ir & 32) |
471 |
t_gen_sext(t, cpu_R[dc->src], size); |
472 |
else
|
473 |
t_gen_zext(t, cpu_R[dc->src], size); |
474 |
|
475 |
cris_alu(dc, op, cpu_R[dc->dst], cpu_R[dc->dst], t, 4);
|
476 |
tcg_temp_free(t); |
477 |
} |
478 |
|
479 |
static void dec10_reg_mov_pr(DisasContext *dc) |
480 |
{ |
481 |
LOG_DIS("move p%d r%d sz=%d\n", dc->dst, dc->src, preg_sizes_v10[dc->dst]);
|
482 |
cris_lock_irq(dc); |
483 |
if (dc->src == 15) { |
484 |
tcg_gen_mov_tl(env_btarget, cpu_PR[dc->dst]); |
485 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
486 |
return;
|
487 |
} |
488 |
if (dc->dst == PR_CCS) {
|
489 |
cris_evaluate_flags(dc); |
490 |
} |
491 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], |
492 |
cpu_R[dc->src], cpu_PR[dc->dst], preg_sizes_v10[dc->dst]); |
493 |
} |
494 |
|
495 |
static void dec10_reg_abs(DisasContext *dc) |
496 |
{ |
497 |
TCGv t0; |
498 |
|
499 |
LOG_DIS("abs $r%u, $r%u\n", dc->src, dc->dst);
|
500 |
|
501 |
assert(dc->dst != 15);
|
502 |
t0 = tcg_temp_new(); |
503 |
tcg_gen_sari_tl(t0, cpu_R[dc->src], 31);
|
504 |
tcg_gen_xor_tl(cpu_R[dc->dst], cpu_R[dc->src], t0); |
505 |
tcg_gen_sub_tl(t0, cpu_R[dc->dst], t0); |
506 |
|
507 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t0, 4);
|
508 |
tcg_temp_free(t0); |
509 |
} |
510 |
|
511 |
static void dec10_reg_swap(DisasContext *dc) |
512 |
{ |
513 |
TCGv t0; |
514 |
|
515 |
LOG_DIS("not $r%d, $r%d\n", dc->src, dc->dst);
|
516 |
|
517 |
cris_cc_mask(dc, CC_MASK_NZVC); |
518 |
t0 = tcg_temp_new(); |
519 |
t_gen_mov_TN_reg(t0, dc->src); |
520 |
if (dc->dst & 8) |
521 |
tcg_gen_not_tl(t0, t0); |
522 |
if (dc->dst & 4) |
523 |
t_gen_swapw(t0, t0); |
524 |
if (dc->dst & 2) |
525 |
t_gen_swapb(t0, t0); |
526 |
if (dc->dst & 1) |
527 |
t_gen_swapr(t0, t0); |
528 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], cpu_R[dc->src], t0, 4);
|
529 |
tcg_temp_free(t0); |
530 |
} |
531 |
|
532 |
static void dec10_reg_scc(DisasContext *dc) |
533 |
{ |
534 |
int cond = dc->dst;
|
535 |
|
536 |
LOG_DIS("s%s $r%u\n", cc_name(cond), dc->src);
|
537 |
|
538 |
if (cond != CC_A)
|
539 |
{ |
540 |
int l1;
|
541 |
|
542 |
gen_tst_cc (dc, cpu_R[dc->src], cond); |
543 |
l1 = gen_new_label(); |
544 |
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_R[dc->src], 0, l1);
|
545 |
tcg_gen_movi_tl(cpu_R[dc->src], 1);
|
546 |
gen_set_label(l1); |
547 |
} else {
|
548 |
tcg_gen_movi_tl(cpu_R[dc->src], 1);
|
549 |
} |
550 |
|
551 |
cris_cc_mask(dc, 0);
|
552 |
} |
553 |
|
554 |
static unsigned int dec10_reg(DisasContext *dc) |
555 |
{ |
556 |
TCGv t; |
557 |
unsigned int insn_len = 2; |
558 |
unsigned int size = dec10_size(dc->size); |
559 |
unsigned int tmp; |
560 |
|
561 |
if (dc->size != 3) { |
562 |
switch (dc->opcode) {
|
563 |
case CRISV10_REG_MOVE_R:
|
564 |
LOG_DIS("move.%d $r%d, $r%d\n", dc->size, dc->src, dc->dst);
|
565 |
cris_cc_mask(dc, CC_MASK_NZVC); |
566 |
dec10_reg_alu(dc, CC_OP_MOVE, size, 0);
|
567 |
if (dc->dst == 15) { |
568 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); |
569 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
570 |
dc->delayed_branch = 1;
|
571 |
} |
572 |
break;
|
573 |
case CRISV10_REG_MOVX:
|
574 |
cris_cc_mask(dc, CC_MASK_NZVC); |
575 |
dec10_reg_movs(dc); |
576 |
break;
|
577 |
case CRISV10_REG_ADDX:
|
578 |
cris_cc_mask(dc, CC_MASK_NZVC); |
579 |
dec10_reg_alux(dc, CC_OP_ADD); |
580 |
break;
|
581 |
case CRISV10_REG_SUBX:
|
582 |
cris_cc_mask(dc, CC_MASK_NZVC); |
583 |
dec10_reg_alux(dc, CC_OP_SUB); |
584 |
break;
|
585 |
case CRISV10_REG_ADD:
|
586 |
LOG_DIS("add $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
587 |
cris_cc_mask(dc, CC_MASK_NZVC); |
588 |
dec10_reg_alu(dc, CC_OP_ADD, size, 0);
|
589 |
break;
|
590 |
case CRISV10_REG_SUB:
|
591 |
LOG_DIS("sub $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
592 |
cris_cc_mask(dc, CC_MASK_NZVC); |
593 |
dec10_reg_alu(dc, CC_OP_SUB, size, 0);
|
594 |
break;
|
595 |
case CRISV10_REG_CMP:
|
596 |
LOG_DIS("cmp $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
597 |
cris_cc_mask(dc, CC_MASK_NZVC); |
598 |
dec10_reg_alu(dc, CC_OP_CMP, size, 0);
|
599 |
break;
|
600 |
case CRISV10_REG_BOUND:
|
601 |
LOG_DIS("bound $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
602 |
cris_cc_mask(dc, CC_MASK_NZVC); |
603 |
dec10_reg_bound(dc, size); |
604 |
break;
|
605 |
case CRISV10_REG_AND:
|
606 |
LOG_DIS("and $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
607 |
cris_cc_mask(dc, CC_MASK_NZVC); |
608 |
dec10_reg_alu(dc, CC_OP_AND, size, 0);
|
609 |
break;
|
610 |
case CRISV10_REG_ADDI:
|
611 |
if (dc->src == 15) { |
612 |
/* nop. */
|
613 |
return 2; |
614 |
} |
615 |
t = tcg_temp_new(); |
616 |
LOG_DIS("addi r%d r%d size=%d\n", dc->src, dc->dst, dc->size);
|
617 |
tcg_gen_shli_tl(t, cpu_R[dc->dst], dc->size & 3);
|
618 |
tcg_gen_add_tl(cpu_R[dc->src], cpu_R[dc->src], t); |
619 |
tcg_temp_free(t); |
620 |
break;
|
621 |
case CRISV10_REG_LSL:
|
622 |
LOG_DIS("lsl $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
623 |
cris_cc_mask(dc, CC_MASK_NZVC); |
624 |
dec10_reg_alu(dc, CC_OP_LSL, size, 0);
|
625 |
break;
|
626 |
case CRISV10_REG_LSR:
|
627 |
LOG_DIS("lsr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
628 |
cris_cc_mask(dc, CC_MASK_NZVC); |
629 |
dec10_reg_alu(dc, CC_OP_LSR, size, 0);
|
630 |
break;
|
631 |
case CRISV10_REG_ASR:
|
632 |
LOG_DIS("asr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
633 |
cris_cc_mask(dc, CC_MASK_NZVC); |
634 |
dec10_reg_alu(dc, CC_OP_ASR, size, 1);
|
635 |
break;
|
636 |
case CRISV10_REG_OR:
|
637 |
LOG_DIS("or $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
638 |
cris_cc_mask(dc, CC_MASK_NZVC); |
639 |
dec10_reg_alu(dc, CC_OP_OR, size, 0);
|
640 |
break;
|
641 |
case CRISV10_REG_NEG:
|
642 |
LOG_DIS("neg $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
643 |
cris_cc_mask(dc, CC_MASK_NZVC); |
644 |
dec10_reg_alu(dc, CC_OP_NEG, size, 0);
|
645 |
break;
|
646 |
case CRISV10_REG_BIAP:
|
647 |
LOG_DIS("BIAP pc=%x reg %d r%d r%d size=%d\n", dc->pc,
|
648 |
dc->opcode, dc->src, dc->dst, size); |
649 |
switch (size) {
|
650 |
case 4: tmp = 2; break; |
651 |
case 2: tmp = 1; break; |
652 |
case 1: tmp = 0; break; |
653 |
default:
|
654 |
cpu_abort(dc->env, "Unhandled BIAP");
|
655 |
break;
|
656 |
} |
657 |
|
658 |
t = tcg_temp_new(); |
659 |
tcg_gen_shli_tl(t, cpu_R[dc->dst], tmp); |
660 |
if (dc->src == 15) { |
661 |
tcg_gen_addi_tl(cpu_PR[PR_PREFIX], t, ((dc->pc +2)| 1) + 1); |
662 |
} else {
|
663 |
tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_R[dc->src], t); |
664 |
} |
665 |
tcg_temp_free(t); |
666 |
cris_set_prefix(dc); |
667 |
break;
|
668 |
|
669 |
default:
|
670 |
LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
|
671 |
dc->opcode, dc->src, dc->dst); |
672 |
cpu_abort(dc->env, "Unhandled opcode");
|
673 |
break;
|
674 |
} |
675 |
} else {
|
676 |
switch (dc->opcode) {
|
677 |
case CRISV10_REG_MOVX:
|
678 |
cris_cc_mask(dc, CC_MASK_NZVC); |
679 |
dec10_reg_movs(dc); |
680 |
break;
|
681 |
case CRISV10_REG_ADDX:
|
682 |
cris_cc_mask(dc, CC_MASK_NZVC); |
683 |
dec10_reg_alux(dc, CC_OP_ADD); |
684 |
break;
|
685 |
case CRISV10_REG_SUBX:
|
686 |
cris_cc_mask(dc, CC_MASK_NZVC); |
687 |
dec10_reg_alux(dc, CC_OP_SUB); |
688 |
break;
|
689 |
case CRISV10_REG_MOVE_SPR_R:
|
690 |
cris_evaluate_flags(dc); |
691 |
cris_cc_mask(dc, 0);
|
692 |
dec10_reg_mov_pr(dc); |
693 |
break;
|
694 |
case CRISV10_REG_MOVE_R_SPR:
|
695 |
LOG_DIS("move r%d p%d\n", dc->src, dc->dst);
|
696 |
cris_evaluate_flags(dc); |
697 |
if (dc->src != 11) /* fast for srp. */ |
698 |
dc->cpustate_changed = 1;
|
699 |
t_gen_mov_preg_TN(dc, dc->dst, cpu_R[dc->src]); |
700 |
break;
|
701 |
case CRISV10_REG_SETF:
|
702 |
case CRISV10_REG_CLEARF:
|
703 |
dec10_setclrf(dc); |
704 |
break;
|
705 |
case CRISV10_REG_SWAP:
|
706 |
dec10_reg_swap(dc); |
707 |
break;
|
708 |
case CRISV10_REG_ABS:
|
709 |
cris_cc_mask(dc, CC_MASK_NZVC); |
710 |
dec10_reg_abs(dc); |
711 |
break;
|
712 |
case CRISV10_REG_LZ:
|
713 |
LOG_DIS("lz $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
714 |
cris_cc_mask(dc, CC_MASK_NZVC); |
715 |
dec10_reg_alu(dc, CC_OP_LZ, 4, 0); |
716 |
break;
|
717 |
case CRISV10_REG_XOR:
|
718 |
LOG_DIS("xor $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
719 |
cris_cc_mask(dc, CC_MASK_NZVC); |
720 |
dec10_reg_alu(dc, CC_OP_XOR, 4, 0); |
721 |
break;
|
722 |
case CRISV10_REG_BTST:
|
723 |
LOG_DIS("btst $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
724 |
cris_cc_mask(dc, CC_MASK_NZVC); |
725 |
cris_update_cc_op(dc, CC_OP_FLAGS, 4);
|
726 |
gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->dst], |
727 |
cpu_R[dc->src], cpu_PR[PR_CCS]); |
728 |
break;
|
729 |
case CRISV10_REG_DSTEP:
|
730 |
LOG_DIS("dstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
731 |
cris_cc_mask(dc, CC_MASK_NZVC); |
732 |
cris_alu(dc, CC_OP_DSTEP, cpu_R[dc->dst], |
733 |
cpu_R[dc->dst], cpu_R[dc->src], 4);
|
734 |
break;
|
735 |
case CRISV10_REG_MSTEP:
|
736 |
LOG_DIS("mstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size);
|
737 |
cris_evaluate_flags(dc); |
738 |
cris_cc_mask(dc, CC_MASK_NZVC); |
739 |
cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst], |
740 |
cpu_R[dc->dst], cpu_R[dc->src], 4);
|
741 |
break;
|
742 |
case CRISV10_REG_SCC:
|
743 |
dec10_reg_scc(dc); |
744 |
break;
|
745 |
default:
|
746 |
LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc,
|
747 |
dc->opcode, dc->src, dc->dst); |
748 |
cpu_abort(dc->env, "Unhandled opcode");
|
749 |
break;
|
750 |
} |
751 |
} |
752 |
return insn_len;
|
753 |
} |
754 |
|
755 |
static unsigned int dec10_ind_move_m_r(CPUCRISState *env, DisasContext *dc, |
756 |
unsigned int size) |
757 |
{ |
758 |
unsigned int insn_len = 2; |
759 |
TCGv t; |
760 |
|
761 |
LOG_DIS("%s: move.%d [$r%d], $r%d\n", __func__,
|
762 |
size, dc->src, dc->dst); |
763 |
|
764 |
cris_cc_mask(dc, CC_MASK_NZVC); |
765 |
t = tcg_temp_new(); |
766 |
insn_len += dec10_prep_move_m(env, dc, 0, size, t);
|
767 |
cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, size); |
768 |
if (dc->dst == 15) { |
769 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); |
770 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
771 |
dc->delayed_branch = 1;
|
772 |
return insn_len;
|
773 |
} |
774 |
|
775 |
tcg_temp_free(t); |
776 |
return insn_len;
|
777 |
} |
778 |
|
779 |
static unsigned int dec10_ind_move_r_m(DisasContext *dc, unsigned int size) |
780 |
{ |
781 |
unsigned int insn_len = 2; |
782 |
TCGv addr; |
783 |
|
784 |
LOG_DIS("move.%d $r%d, [$r%d]\n", dc->size, dc->src, dc->dst);
|
785 |
addr = tcg_temp_new(); |
786 |
crisv10_prepare_memaddr(dc, addr, size); |
787 |
gen_store_v10(dc, addr, cpu_R[dc->dst], size); |
788 |
insn_len += crisv10_post_memaddr(dc, size); |
789 |
|
790 |
return insn_len;
|
791 |
} |
792 |
|
793 |
static unsigned int dec10_ind_move_m_pr(CPUCRISState *env, DisasContext *dc) |
794 |
{ |
795 |
unsigned int insn_len = 2, rd = dc->dst; |
796 |
TCGv t, addr; |
797 |
|
798 |
LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
|
799 |
cris_lock_irq(dc); |
800 |
|
801 |
addr = tcg_temp_new(); |
802 |
t = tcg_temp_new(); |
803 |
insn_len += dec10_prep_move_m(env, dc, 0, 4, t); |
804 |
if (rd == 15) { |
805 |
tcg_gen_mov_tl(env_btarget, t); |
806 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
807 |
dc->delayed_branch = 1;
|
808 |
return insn_len;
|
809 |
} |
810 |
|
811 |
tcg_gen_mov_tl(cpu_PR[rd], t); |
812 |
dc->cpustate_changed = 1;
|
813 |
tcg_temp_free(addr); |
814 |
tcg_temp_free(t); |
815 |
return insn_len;
|
816 |
} |
817 |
|
818 |
static unsigned int dec10_ind_move_pr_m(DisasContext *dc) |
819 |
{ |
820 |
unsigned int insn_len = 2, size = preg_sizes_v10[dc->dst]; |
821 |
TCGv addr, t0; |
822 |
|
823 |
LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src);
|
824 |
|
825 |
addr = tcg_temp_new(); |
826 |
crisv10_prepare_memaddr(dc, addr, size); |
827 |
if (dc->dst == PR_CCS) {
|
828 |
t0 = tcg_temp_new(); |
829 |
cris_evaluate_flags(dc); |
830 |
tcg_gen_andi_tl(t0, cpu_PR[PR_CCS], ~PFIX_FLAG); |
831 |
gen_store_v10(dc, addr, t0, size); |
832 |
tcg_temp_free(t0); |
833 |
} else {
|
834 |
gen_store_v10(dc, addr, cpu_PR[dc->dst], size); |
835 |
} |
836 |
t0 = tcg_temp_new(); |
837 |
insn_len += crisv10_post_memaddr(dc, size); |
838 |
cris_lock_irq(dc); |
839 |
|
840 |
return insn_len;
|
841 |
} |
842 |
|
843 |
static void dec10_movem_r_m(DisasContext *dc) |
844 |
{ |
845 |
int i, pfix = dc->tb_flags & PFIX_FLAG;
|
846 |
TCGv addr, t0; |
847 |
|
848 |
LOG_DIS("%s r%d, [r%d] pi=%d ir=%x\n", __func__,
|
849 |
dc->dst, dc->src, dc->postinc, dc->ir); |
850 |
|
851 |
addr = tcg_temp_new(); |
852 |
t0 = tcg_temp_new(); |
853 |
crisv10_prepare_memaddr(dc, addr, 4);
|
854 |
tcg_gen_mov_tl(t0, addr); |
855 |
for (i = dc->dst; i >= 0; i--) { |
856 |
if ((pfix && dc->mode == CRISV10_MODE_AUTOINC) && dc->src == i) {
|
857 |
gen_store_v10(dc, addr, t0, 4);
|
858 |
} else {
|
859 |
gen_store_v10(dc, addr, cpu_R[i], 4);
|
860 |
} |
861 |
tcg_gen_addi_tl(addr, addr, 4);
|
862 |
} |
863 |
|
864 |
if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
|
865 |
tcg_gen_mov_tl(cpu_R[dc->src], t0); |
866 |
} |
867 |
|
868 |
if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
|
869 |
tcg_gen_mov_tl(cpu_R[dc->src], addr); |
870 |
} |
871 |
tcg_temp_free(addr); |
872 |
tcg_temp_free(t0); |
873 |
} |
874 |
|
875 |
static void dec10_movem_m_r(DisasContext *dc) |
876 |
{ |
877 |
int i, pfix = dc->tb_flags & PFIX_FLAG;
|
878 |
TCGv addr, t0; |
879 |
|
880 |
LOG_DIS("%s [r%d], r%d pi=%d ir=%x\n", __func__,
|
881 |
dc->src, dc->dst, dc->postinc, dc->ir); |
882 |
|
883 |
addr = tcg_temp_new(); |
884 |
t0 = tcg_temp_new(); |
885 |
crisv10_prepare_memaddr(dc, addr, 4);
|
886 |
tcg_gen_mov_tl(t0, addr); |
887 |
for (i = dc->dst; i >= 0; i--) { |
888 |
gen_load(dc, cpu_R[i], addr, 4, 0); |
889 |
tcg_gen_addi_tl(addr, addr, 4);
|
890 |
} |
891 |
|
892 |
if (pfix && dc->mode == CRISV10_MODE_AUTOINC) {
|
893 |
tcg_gen_mov_tl(cpu_R[dc->src], t0); |
894 |
} |
895 |
|
896 |
if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) {
|
897 |
tcg_gen_mov_tl(cpu_R[dc->src], addr); |
898 |
} |
899 |
tcg_temp_free(addr); |
900 |
tcg_temp_free(t0); |
901 |
} |
902 |
|
903 |
static int dec10_ind_alu(CPUCRISState *env, DisasContext *dc, |
904 |
int op, unsigned int size) |
905 |
{ |
906 |
int insn_len = 0; |
907 |
int rd = dc->dst;
|
908 |
TCGv t[2];
|
909 |
|
910 |
cris_alu_m_alloc_temps(t); |
911 |
insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]); |
912 |
cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t[0], size);
|
913 |
if (dc->dst == 15) { |
914 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); |
915 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
916 |
dc->delayed_branch = 1;
|
917 |
return insn_len;
|
918 |
} |
919 |
|
920 |
cris_alu_m_free_temps(t); |
921 |
|
922 |
return insn_len;
|
923 |
} |
924 |
|
925 |
static int dec10_ind_bound(CPUCRISState *env, DisasContext *dc, |
926 |
unsigned int size) |
927 |
{ |
928 |
int insn_len = 0; |
929 |
int rd = dc->dst;
|
930 |
TCGv t; |
931 |
|
932 |
t = tcg_temp_local_new(); |
933 |
insn_len += dec10_prep_move_m(env, dc, 0, size, t);
|
934 |
cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[rd], t, 4);
|
935 |
if (dc->dst == 15) { |
936 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); |
937 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
938 |
dc->delayed_branch = 1;
|
939 |
return insn_len;
|
940 |
} |
941 |
|
942 |
tcg_temp_free(t); |
943 |
return insn_len;
|
944 |
} |
945 |
|
946 |
static int dec10_alux_m(CPUCRISState *env, DisasContext *dc, int op) |
947 |
{ |
948 |
unsigned int size = (dc->size & 1) ? 2 : 1; |
949 |
unsigned int sx = !!(dc->size & 2); |
950 |
int insn_len = 2; |
951 |
int rd = dc->dst;
|
952 |
TCGv t; |
953 |
|
954 |
LOG_DIS("addx size=%d sx=%d op=%d %d\n", size, sx, dc->src, dc->dst);
|
955 |
|
956 |
t = tcg_temp_new(); |
957 |
|
958 |
cris_cc_mask(dc, CC_MASK_NZVC); |
959 |
insn_len += dec10_prep_move_m(env, dc, sx, size, t); |
960 |
cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t, 4);
|
961 |
if (dc->dst == 15) { |
962 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); |
963 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
964 |
dc->delayed_branch = 1;
|
965 |
return insn_len;
|
966 |
} |
967 |
|
968 |
tcg_temp_free(t); |
969 |
return insn_len;
|
970 |
} |
971 |
|
972 |
static int dec10_dip(CPUCRISState *env, DisasContext *dc) |
973 |
{ |
974 |
int insn_len = 2; |
975 |
uint32_t imm; |
976 |
|
977 |
LOG_DIS("dip pc=%x opcode=%d r%d r%d\n",
|
978 |
dc->pc, dc->opcode, dc->src, dc->dst); |
979 |
if (dc->src == 15) { |
980 |
imm = cpu_ldl_code(env, dc->pc + 2);
|
981 |
tcg_gen_movi_tl(cpu_PR[PR_PREFIX], imm); |
982 |
if (dc->postinc)
|
983 |
insn_len += 4;
|
984 |
tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len - 2); |
985 |
} else {
|
986 |
gen_load(dc, cpu_PR[PR_PREFIX], cpu_R[dc->src], 4, 0); |
987 |
if (dc->postinc)
|
988 |
tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], 4);
|
989 |
} |
990 |
|
991 |
cris_set_prefix(dc); |
992 |
return insn_len;
|
993 |
} |
994 |
|
995 |
static int dec10_bdap_m(CPUCRISState *env, DisasContext *dc, int size) |
996 |
{ |
997 |
int insn_len = 2; |
998 |
int rd = dc->dst;
|
999 |
|
1000 |
LOG_DIS("bdap_m pc=%x opcode=%d r%d r%d sz=%d\n",
|
1001 |
dc->pc, dc->opcode, dc->src, dc->dst, size); |
1002 |
|
1003 |
assert(dc->dst != 15);
|
1004 |
#if 0
|
1005 |
/* 8bit embedded offset? */
|
1006 |
if (!dc->postinc && (dc->ir & (1 << 11))) {
|
1007 |
int simm = dc->ir & 0xff;
|
1008 |
|
1009 |
/* cpu_abort(dc->env, "Unhandled opcode"); */
|
1010 |
/* sign extended. */
|
1011 |
simm = (int8_t)simm;
|
1012 |
|
1013 |
tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm);
|
1014 |
|
1015 |
cris_set_prefix(dc);
|
1016 |
return insn_len;
|
1017 |
}
|
1018 |
#endif
|
1019 |
/* Now the rest of the modes are truly indirect. */
|
1020 |
insn_len += dec10_prep_move_m(env, dc, 1, size, cpu_PR[PR_PREFIX]);
|
1021 |
tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_PR[PR_PREFIX], cpu_R[rd]); |
1022 |
cris_set_prefix(dc); |
1023 |
return insn_len;
|
1024 |
} |
1025 |
|
1026 |
static unsigned int dec10_ind(CPUCRISState *env, DisasContext *dc) |
1027 |
{ |
1028 |
unsigned int insn_len = 2; |
1029 |
unsigned int size = dec10_size(dc->size); |
1030 |
uint32_t imm; |
1031 |
int32_t simm; |
1032 |
TCGv t[2];
|
1033 |
|
1034 |
if (dc->size != 3) { |
1035 |
switch (dc->opcode) {
|
1036 |
case CRISV10_IND_MOVE_M_R:
|
1037 |
return dec10_ind_move_m_r(env, dc, size);
|
1038 |
break;
|
1039 |
case CRISV10_IND_MOVE_R_M:
|
1040 |
return dec10_ind_move_r_m(dc, size);
|
1041 |
break;
|
1042 |
case CRISV10_IND_CMP:
|
1043 |
LOG_DIS("cmp size=%d op=%d %d\n", size, dc->src, dc->dst);
|
1044 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1045 |
insn_len += dec10_ind_alu(env, dc, CC_OP_CMP, size); |
1046 |
break;
|
1047 |
case CRISV10_IND_TEST:
|
1048 |
LOG_DIS("test size=%d op=%d %d\n", size, dc->src, dc->dst);
|
1049 |
|
1050 |
cris_evaluate_flags(dc); |
1051 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1052 |
cris_alu_m_alloc_temps(t); |
1053 |
insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]); |
1054 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3);
|
1055 |
cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst], |
1056 |
t[0], tcg_const_tl(0), size); |
1057 |
cris_alu_m_free_temps(t); |
1058 |
break;
|
1059 |
case CRISV10_IND_ADD:
|
1060 |
LOG_DIS("add size=%d op=%d %d\n", size, dc->src, dc->dst);
|
1061 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1062 |
insn_len += dec10_ind_alu(env, dc, CC_OP_ADD, size); |
1063 |
break;
|
1064 |
case CRISV10_IND_SUB:
|
1065 |
LOG_DIS("sub size=%d op=%d %d\n", size, dc->src, dc->dst);
|
1066 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1067 |
insn_len += dec10_ind_alu(env, dc, CC_OP_SUB, size); |
1068 |
break;
|
1069 |
case CRISV10_IND_BOUND:
|
1070 |
LOG_DIS("bound size=%d op=%d %d\n", size, dc->src, dc->dst);
|
1071 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1072 |
insn_len += dec10_ind_bound(env, dc, size); |
1073 |
break;
|
1074 |
case CRISV10_IND_AND:
|
1075 |
LOG_DIS("and size=%d op=%d %d\n", size, dc->src, dc->dst);
|
1076 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1077 |
insn_len += dec10_ind_alu(env, dc, CC_OP_AND, size); |
1078 |
break;
|
1079 |
case CRISV10_IND_OR:
|
1080 |
LOG_DIS("or size=%d op=%d %d\n", size, dc->src, dc->dst);
|
1081 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1082 |
insn_len += dec10_ind_alu(env, dc, CC_OP_OR, size); |
1083 |
break;
|
1084 |
case CRISV10_IND_MOVX:
|
1085 |
insn_len = dec10_alux_m(env, dc, CC_OP_MOVE); |
1086 |
break;
|
1087 |
case CRISV10_IND_ADDX:
|
1088 |
insn_len = dec10_alux_m(env, dc, CC_OP_ADD); |
1089 |
break;
|
1090 |
case CRISV10_IND_SUBX:
|
1091 |
insn_len = dec10_alux_m(env, dc, CC_OP_SUB); |
1092 |
break;
|
1093 |
case CRISV10_IND_CMPX:
|
1094 |
insn_len = dec10_alux_m(env, dc, CC_OP_CMP); |
1095 |
break;
|
1096 |
case CRISV10_IND_MUL:
|
1097 |
/* This is a reg insn coded in the mem indir space. */
|
1098 |
LOG_DIS("mul pc=%x opcode=%d\n", dc->pc, dc->opcode);
|
1099 |
cris_cc_mask(dc, CC_MASK_NZVC); |
1100 |
dec10_reg_mul(dc, size, dc->ir & (1 << 10)); |
1101 |
break;
|
1102 |
case CRISV10_IND_BDAP_M:
|
1103 |
insn_len = dec10_bdap_m(env, dc, size); |
1104 |
break;
|
1105 |
default:
|
1106 |
LOG_DIS("pc=%x var-ind.%d %d r%d r%d\n",
|
1107 |
dc->pc, size, dc->opcode, dc->src, dc->dst); |
1108 |
cpu_abort(dc->env, "Unhandled opcode");
|
1109 |
break;
|
1110 |
} |
1111 |
return insn_len;
|
1112 |
} |
1113 |
|
1114 |
switch (dc->opcode) {
|
1115 |
case CRISV10_IND_MOVE_M_SPR:
|
1116 |
insn_len = dec10_ind_move_m_pr(env, dc); |
1117 |
break;
|
1118 |
case CRISV10_IND_MOVE_SPR_M:
|
1119 |
insn_len = dec10_ind_move_pr_m(dc); |
1120 |
break;
|
1121 |
case CRISV10_IND_JUMP_M:
|
1122 |
if (dc->src == 15) { |
1123 |
LOG_DIS("jump.%d %d r%d r%d direct\n", size,
|
1124 |
dc->opcode, dc->src, dc->dst); |
1125 |
imm = cpu_ldl_code(env, dc->pc + 2);
|
1126 |
if (dc->mode == CRISV10_MODE_AUTOINC)
|
1127 |
insn_len += size; |
1128 |
|
1129 |
t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len)); |
1130 |
dc->jmp_pc = imm; |
1131 |
cris_prepare_jmp(dc, JMP_DIRECT); |
1132 |
dc->delayed_branch--; /* v10 has no dslot here. */
|
1133 |
} else {
|
1134 |
if (dc->dst == 14) { |
1135 |
LOG_DIS("break %d\n", dc->src);
|
1136 |
cris_evaluate_flags(dc); |
1137 |
tcg_gen_movi_tl(env_pc, dc->pc + 2);
|
1138 |
t_gen_mov_env_TN(trap_vector, tcg_const_tl(dc->src + 2));
|
1139 |
t_gen_raise_exception(EXCP_BREAK); |
1140 |
dc->is_jmp = DISAS_UPDATE; |
1141 |
return insn_len;
|
1142 |
} |
1143 |
LOG_DIS("%d: jump.%d %d r%d r%d\n", __LINE__, size,
|
1144 |
dc->opcode, dc->src, dc->dst); |
1145 |
t[0] = tcg_temp_new();
|
1146 |
t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len)); |
1147 |
crisv10_prepare_memaddr(dc, t[0], size);
|
1148 |
gen_load(dc, env_btarget, t[0], 4, 0); |
1149 |
insn_len += crisv10_post_memaddr(dc, size); |
1150 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
1151 |
dc->delayed_branch--; /* v10 has no dslot here. */
|
1152 |
tcg_temp_free(t[0]);
|
1153 |
} |
1154 |
break;
|
1155 |
|
1156 |
case CRISV10_IND_MOVEM_R_M:
|
1157 |
LOG_DIS("movem_r_m pc=%x opcode=%d r%d r%d\n",
|
1158 |
dc->pc, dc->opcode, dc->dst, dc->src); |
1159 |
dec10_movem_r_m(dc); |
1160 |
break;
|
1161 |
case CRISV10_IND_MOVEM_M_R:
|
1162 |
LOG_DIS("movem_m_r pc=%x opcode=%d\n", dc->pc, dc->opcode);
|
1163 |
dec10_movem_m_r(dc); |
1164 |
break;
|
1165 |
case CRISV10_IND_JUMP_R:
|
1166 |
LOG_DIS("jmp pc=%x opcode=%d r%d r%d\n",
|
1167 |
dc->pc, dc->opcode, dc->dst, dc->src); |
1168 |
tcg_gen_mov_tl(env_btarget, cpu_R[dc->src]); |
1169 |
t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len)); |
1170 |
cris_prepare_jmp(dc, JMP_INDIRECT); |
1171 |
dc->delayed_branch--; /* v10 has no dslot here. */
|
1172 |
break;
|
1173 |
case CRISV10_IND_MOVX:
|
1174 |
insn_len = dec10_alux_m(env, dc, CC_OP_MOVE); |
1175 |
break;
|
1176 |
case CRISV10_IND_ADDX:
|
1177 |
insn_len = dec10_alux_m(env, dc, CC_OP_ADD); |
1178 |
break;
|
1179 |
case CRISV10_IND_SUBX:
|
1180 |
insn_len = dec10_alux_m(env, dc, CC_OP_SUB); |
1181 |
break;
|
1182 |
case CRISV10_IND_CMPX:
|
1183 |
insn_len = dec10_alux_m(env, dc, CC_OP_CMP); |
1184 |
break;
|
1185 |
case CRISV10_IND_DIP:
|
1186 |
insn_len = dec10_dip(env, dc); |
1187 |
break;
|
1188 |
case CRISV10_IND_BCC_M:
|
1189 |
|
1190 |
cris_cc_mask(dc, 0);
|
1191 |
imm = cpu_ldsw_code(env, dc->pc + 2);
|
1192 |
simm = (int16_t)imm; |
1193 |
simm += 4;
|
1194 |
|
1195 |
LOG_DIS("bcc_m: b%s %x\n", cc_name(dc->cond), dc->pc + simm);
|
1196 |
cris_prepare_cc_branch(dc, simm, dc->cond); |
1197 |
insn_len = 4;
|
1198 |
break;
|
1199 |
default:
|
1200 |
LOG_DIS("ERROR pc=%x opcode=%d\n", dc->pc, dc->opcode);
|
1201 |
cpu_abort(dc->env, "Unhandled opcode");
|
1202 |
break;
|
1203 |
} |
1204 |
|
1205 |
return insn_len;
|
1206 |
} |
1207 |
|
1208 |
static unsigned int crisv10_decoder(CPUCRISState *env, DisasContext *dc) |
1209 |
{ |
1210 |
unsigned int insn_len = 2; |
1211 |
|
1212 |
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP)))
|
1213 |
tcg_gen_debug_insn_start(dc->pc); |
1214 |
|
1215 |
/* Load a halfword onto the instruction register. */
|
1216 |
dc->ir = cpu_lduw_code(env, dc->pc); |
1217 |
|
1218 |
/* Now decode it. */
|
1219 |
dc->opcode = EXTRACT_FIELD(dc->ir, 6, 9); |
1220 |
dc->mode = EXTRACT_FIELD(dc->ir, 10, 11); |
1221 |
dc->src = EXTRACT_FIELD(dc->ir, 0, 3); |
1222 |
dc->size = EXTRACT_FIELD(dc->ir, 4, 5); |
1223 |
dc->cond = dc->dst = EXTRACT_FIELD(dc->ir, 12, 15); |
1224 |
dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10); |
1225 |
|
1226 |
dc->clear_prefix = 1;
|
1227 |
|
1228 |
/* FIXME: What if this insn insn't 2 in length?? */
|
1229 |
if (dc->src == 15 || dc->dst == 15) |
1230 |
tcg_gen_movi_tl(cpu_R[15], dc->pc + 2); |
1231 |
|
1232 |
switch (dc->mode) {
|
1233 |
case CRISV10_MODE_QIMMEDIATE:
|
1234 |
insn_len = dec10_quick_imm(dc); |
1235 |
break;
|
1236 |
case CRISV10_MODE_REG:
|
1237 |
insn_len = dec10_reg(dc); |
1238 |
break;
|
1239 |
case CRISV10_MODE_AUTOINC:
|
1240 |
case CRISV10_MODE_INDIRECT:
|
1241 |
insn_len = dec10_ind(env, dc); |
1242 |
break;
|
1243 |
} |
1244 |
|
1245 |
if (dc->clear_prefix && dc->tb_flags & PFIX_FLAG) {
|
1246 |
dc->tb_flags &= ~PFIX_FLAG; |
1247 |
tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~PFIX_FLAG); |
1248 |
if (dc->tb_flags != dc->tb->flags) {
|
1249 |
dc->cpustate_changed = 1;
|
1250 |
} |
1251 |
} |
1252 |
|
1253 |
/* CRISv10 locks out interrupts on dslots. */
|
1254 |
if (dc->delayed_branch == 2) { |
1255 |
cris_lock_irq(dc); |
1256 |
} |
1257 |
return insn_len;
|
1258 |
} |
1259 |
|
1260 |
static CPUCRISState *cpu_crisv10_init (CPUCRISState *env)
|
1261 |
{ |
1262 |
int i;
|
1263 |
|
1264 |
cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
|
1265 |
cc_x = tcg_global_mem_new(TCG_AREG0, |
1266 |
offsetof(CPUCRISState, cc_x), "cc_x");
|
1267 |
cc_src = tcg_global_mem_new(TCG_AREG0, |
1268 |
offsetof(CPUCRISState, cc_src), "cc_src");
|
1269 |
cc_dest = tcg_global_mem_new(TCG_AREG0, |
1270 |
offsetof(CPUCRISState, cc_dest), |
1271 |
"cc_dest");
|
1272 |
cc_result = tcg_global_mem_new(TCG_AREG0, |
1273 |
offsetof(CPUCRISState, cc_result), |
1274 |
"cc_result");
|
1275 |
cc_op = tcg_global_mem_new(TCG_AREG0, |
1276 |
offsetof(CPUCRISState, cc_op), "cc_op");
|
1277 |
cc_size = tcg_global_mem_new(TCG_AREG0, |
1278 |
offsetof(CPUCRISState, cc_size), |
1279 |
"cc_size");
|
1280 |
cc_mask = tcg_global_mem_new(TCG_AREG0, |
1281 |
offsetof(CPUCRISState, cc_mask), |
1282 |
"cc_mask");
|
1283 |
|
1284 |
env_pc = tcg_global_mem_new(TCG_AREG0, |
1285 |
offsetof(CPUCRISState, pc), |
1286 |
"pc");
|
1287 |
env_btarget = tcg_global_mem_new(TCG_AREG0, |
1288 |
offsetof(CPUCRISState, btarget), |
1289 |
"btarget");
|
1290 |
env_btaken = tcg_global_mem_new(TCG_AREG0, |
1291 |
offsetof(CPUCRISState, btaken), |
1292 |
"btaken");
|
1293 |
for (i = 0; i < 16; i++) { |
1294 |
cpu_R[i] = tcg_global_mem_new(TCG_AREG0, |
1295 |
offsetof(CPUCRISState, regs[i]), |
1296 |
regnames_v10[i]); |
1297 |
} |
1298 |
for (i = 0; i < 16; i++) { |
1299 |
cpu_PR[i] = tcg_global_mem_new(TCG_AREG0, |
1300 |
offsetof(CPUCRISState, pregs[i]), |
1301 |
pregnames_v10[i]); |
1302 |
} |
1303 |
|
1304 |
return env;
|
1305 |
} |
1306 |
|