root / target-unicore32 / translate.c @ 8cfd0495
History | View | Annotate | Download (58.8 kB)
| 1 |
/*
|
|---|---|
| 2 |
* UniCore32 translation
|
| 3 |
*
|
| 4 |
* Copyright (C) 2010-2012 Guan Xuetao
|
| 5 |
*
|
| 6 |
* This program is free software; you can redistribute it and/or modify
|
| 7 |
* it under the terms of the GNU General Public License version 2 as
|
| 8 |
* published by the Free Software Foundation, or (at your option) any
|
| 9 |
* later version. See the COPYING file in the top-level directory.
|
| 10 |
*/
|
| 11 |
#include <stdarg.h> |
| 12 |
#include <stdlib.h> |
| 13 |
#include <stdio.h> |
| 14 |
#include <string.h> |
| 15 |
#include <inttypes.h> |
| 16 |
|
| 17 |
#include "cpu.h" |
| 18 |
#include "disas/disas.h" |
| 19 |
#include "tcg-op.h" |
| 20 |
#include "qemu/log.h" |
| 21 |
|
| 22 |
#include "helper.h" |
| 23 |
#define GEN_HELPER 1 |
| 24 |
#include "helper.h" |
| 25 |
|
| 26 |
/* internal defines */
|
| 27 |
typedef struct DisasContext { |
| 28 |
target_ulong pc; |
| 29 |
int is_jmp;
|
| 30 |
/* Nonzero if this instruction has been conditionally skipped. */
|
| 31 |
int condjmp;
|
| 32 |
/* The label that will be jumped to when the instruction is skipped. */
|
| 33 |
int condlabel;
|
| 34 |
struct TranslationBlock *tb;
|
| 35 |
int singlestep_enabled;
|
| 36 |
#ifndef CONFIG_USER_ONLY
|
| 37 |
int user;
|
| 38 |
#endif
|
| 39 |
} DisasContext; |
| 40 |
|
| 41 |
#ifndef CONFIG_USER_ONLY
|
| 42 |
#define IS_USER(s) (s->user)
|
| 43 |
#else
|
| 44 |
#define IS_USER(s) 1 |
| 45 |
#endif
|
| 46 |
|
| 47 |
/* These instructions trap after executing, so defer them until after the
|
| 48 |
conditional executions state has been updated. */
|
| 49 |
#define DISAS_SYSCALL 5 |
| 50 |
|
| 51 |
static TCGv_ptr cpu_env;
|
| 52 |
static TCGv_i32 cpu_R[32]; |
| 53 |
|
| 54 |
/* FIXME: These should be removed. */
|
| 55 |
static TCGv cpu_F0s, cpu_F1s;
|
| 56 |
static TCGv_i64 cpu_F0d, cpu_F1d;
|
| 57 |
|
| 58 |
#include "exec/gen-icount.h" |
| 59 |
|
| 60 |
static const char *regnames[] = { |
| 61 |
"r00", "r01", "r02", "r03", "r04", "r05", "r06", "r07", |
| 62 |
"r08", "r09", "r10", "r11", "r12", "r13", "r14", "r15", |
| 63 |
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", |
| 64 |
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "pc" }; |
| 65 |
|
| 66 |
/* initialize TCG globals. */
|
| 67 |
void uc32_translate_init(void) |
| 68 |
{
|
| 69 |
int i;
|
| 70 |
|
| 71 |
cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
|
| 72 |
|
| 73 |
for (i = 0; i < 32; i++) { |
| 74 |
cpu_R[i] = tcg_global_mem_new_i32(TCG_AREG0, |
| 75 |
offsetof(CPUUniCore32State, regs[i]), regnames[i]); |
| 76 |
} |
| 77 |
|
| 78 |
#define GEN_HELPER 2 |
| 79 |
#include "helper.h" |
| 80 |
} |
| 81 |
|
| 82 |
static int num_temps; |
| 83 |
|
| 84 |
/* Allocate a temporary variable. */
|
| 85 |
static TCGv_i32 new_tmp(void) |
| 86 |
{
|
| 87 |
num_temps++; |
| 88 |
return tcg_temp_new_i32();
|
| 89 |
} |
| 90 |
|
| 91 |
/* Release a temporary variable. */
|
| 92 |
static void dead_tmp(TCGv tmp) |
| 93 |
{
|
| 94 |
tcg_temp_free(tmp); |
| 95 |
num_temps--; |
| 96 |
} |
| 97 |
|
| 98 |
static inline TCGv load_cpu_offset(int offset) |
| 99 |
{
|
| 100 |
TCGv tmp = new_tmp(); |
| 101 |
tcg_gen_ld_i32(tmp, cpu_env, offset); |
| 102 |
return tmp;
|
| 103 |
} |
| 104 |
|
| 105 |
#define load_cpu_field(name) load_cpu_offset(offsetof(CPUUniCore32State, name))
|
| 106 |
|
| 107 |
static inline void store_cpu_offset(TCGv var, int offset) |
| 108 |
{
|
| 109 |
tcg_gen_st_i32(var, cpu_env, offset); |
| 110 |
dead_tmp(var); |
| 111 |
} |
| 112 |
|
| 113 |
#define store_cpu_field(var, name) \
|
| 114 |
store_cpu_offset(var, offsetof(CPUUniCore32State, name)) |
| 115 |
|
| 116 |
/* Set a variable to the value of a CPU register. */
|
| 117 |
static void load_reg_var(DisasContext *s, TCGv var, int reg) |
| 118 |
{
|
| 119 |
if (reg == 31) { |
| 120 |
uint32_t addr; |
| 121 |
/* normaly, since we updated PC */
|
| 122 |
addr = (long)s->pc;
|
| 123 |
tcg_gen_movi_i32(var, addr); |
| 124 |
} else {
|
| 125 |
tcg_gen_mov_i32(var, cpu_R[reg]); |
| 126 |
} |
| 127 |
} |
| 128 |
|
| 129 |
/* Create a new temporary and set it to the value of a CPU register. */
|
| 130 |
static inline TCGv load_reg(DisasContext *s, int reg) |
| 131 |
{
|
| 132 |
TCGv tmp = new_tmp(); |
| 133 |
load_reg_var(s, tmp, reg); |
| 134 |
return tmp;
|
| 135 |
} |
| 136 |
|
| 137 |
/* Set a CPU register. The source must be a temporary and will be
|
| 138 |
marked as dead. */
|
| 139 |
static void store_reg(DisasContext *s, int reg, TCGv var) |
| 140 |
{
|
| 141 |
if (reg == 31) { |
| 142 |
tcg_gen_andi_i32(var, var, ~3);
|
| 143 |
s->is_jmp = DISAS_JUMP; |
| 144 |
} |
| 145 |
tcg_gen_mov_i32(cpu_R[reg], var); |
| 146 |
dead_tmp(var); |
| 147 |
} |
| 148 |
|
| 149 |
/* Value extensions. */
|
| 150 |
#define gen_uxtb(var) tcg_gen_ext8u_i32(var, var)
|
| 151 |
#define gen_uxth(var) tcg_gen_ext16u_i32(var, var)
|
| 152 |
#define gen_sxtb(var) tcg_gen_ext8s_i32(var, var)
|
| 153 |
#define gen_sxth(var) tcg_gen_ext16s_i32(var, var)
|
| 154 |
|
| 155 |
#define UCOP_REG_M (((insn) >> 0) & 0x1f) |
| 156 |
#define UCOP_REG_N (((insn) >> 19) & 0x1f) |
| 157 |
#define UCOP_REG_D (((insn) >> 14) & 0x1f) |
| 158 |
#define UCOP_REG_S (((insn) >> 9) & 0x1f) |
| 159 |
#define UCOP_REG_LO (((insn) >> 14) & 0x1f) |
| 160 |
#define UCOP_REG_HI (((insn) >> 9) & 0x1f) |
| 161 |
#define UCOP_SH_OP (((insn) >> 6) & 0x03) |
| 162 |
#define UCOP_SH_IM (((insn) >> 9) & 0x1f) |
| 163 |
#define UCOP_OPCODES (((insn) >> 25) & 0x0f) |
| 164 |
#define UCOP_IMM_9 (((insn) >> 0) & 0x1ff) |
| 165 |
#define UCOP_IMM10 (((insn) >> 0) & 0x3ff) |
| 166 |
#define UCOP_IMM14 (((insn) >> 0) & 0x3fff) |
| 167 |
#define UCOP_COND (((insn) >> 25) & 0x0f) |
| 168 |
#define UCOP_CMOV_COND (((insn) >> 19) & 0x0f) |
| 169 |
#define UCOP_CPNUM (((insn) >> 10) & 0x0f) |
| 170 |
#define UCOP_UCF64_FMT (((insn) >> 24) & 0x03) |
| 171 |
#define UCOP_UCF64_FUNC (((insn) >> 6) & 0x0f) |
| 172 |
#define UCOP_UCF64_COND (((insn) >> 6) & 0x0f) |
| 173 |
|
| 174 |
#define UCOP_SET(i) ((insn) & (1 << (i))) |
| 175 |
#define UCOP_SET_P UCOP_SET(28) |
| 176 |
#define UCOP_SET_U UCOP_SET(27) |
| 177 |
#define UCOP_SET_B UCOP_SET(26) |
| 178 |
#define UCOP_SET_W UCOP_SET(25) |
| 179 |
#define UCOP_SET_L UCOP_SET(24) |
| 180 |
#define UCOP_SET_S UCOP_SET(24) |
| 181 |
|
| 182 |
#define ILLEGAL cpu_abort(env, \
|
| 183 |
"Illegal UniCore32 instruction %x at line %d!", \
|
| 184 |
insn, __LINE__) |
| 185 |
|
| 186 |
#ifndef CONFIG_USER_ONLY
|
| 187 |
static void disas_cp0_insn(CPUUniCore32State *env, DisasContext *s, |
| 188 |
uint32_t insn) |
| 189 |
{
|
| 190 |
TCGv tmp, tmp2, tmp3; |
| 191 |
if ((insn & 0xfe000000) == 0xe0000000) { |
| 192 |
tmp2 = new_tmp(); |
| 193 |
tmp3 = new_tmp(); |
| 194 |
tcg_gen_movi_i32(tmp2, UCOP_REG_N); |
| 195 |
tcg_gen_movi_i32(tmp3, UCOP_IMM10); |
| 196 |
if (UCOP_SET_L) {
|
| 197 |
tmp = new_tmp(); |
| 198 |
gen_helper_cp0_get(tmp, cpu_env, tmp2, tmp3); |
| 199 |
store_reg(s, UCOP_REG_D, tmp); |
| 200 |
} else {
|
| 201 |
tmp = load_reg(s, UCOP_REG_D); |
| 202 |
gen_helper_cp0_set(cpu_env, tmp, tmp2, tmp3); |
| 203 |
dead_tmp(tmp); |
| 204 |
} |
| 205 |
dead_tmp(tmp2); |
| 206 |
dead_tmp(tmp3); |
| 207 |
return;
|
| 208 |
} |
| 209 |
ILLEGAL; |
| 210 |
} |
| 211 |
|
| 212 |
static void disas_ocd_insn(CPUUniCore32State *env, DisasContext *s, |
| 213 |
uint32_t insn) |
| 214 |
{
|
| 215 |
TCGv tmp; |
| 216 |
|
| 217 |
if ((insn & 0xff003fff) == 0xe1000400) { |
| 218 |
/*
|
| 219 |
* movc rd, pp.nn, #imm9
|
| 220 |
* rd: UCOP_REG_D
|
| 221 |
* nn: UCOP_REG_N (must be 0)
|
| 222 |
* imm9: 0
|
| 223 |
*/
|
| 224 |
if (UCOP_REG_N == 0) { |
| 225 |
tmp = new_tmp(); |
| 226 |
tcg_gen_movi_i32(tmp, 0);
|
| 227 |
store_reg(s, UCOP_REG_D, tmp); |
| 228 |
return;
|
| 229 |
} else {
|
| 230 |
ILLEGAL; |
| 231 |
} |
| 232 |
} |
| 233 |
if ((insn & 0xff003fff) == 0xe0000401) { |
| 234 |
/*
|
| 235 |
* movc pp.nn, rn, #imm9
|
| 236 |
* rn: UCOP_REG_D
|
| 237 |
* nn: UCOP_REG_N (must be 1)
|
| 238 |
* imm9: 1
|
| 239 |
*/
|
| 240 |
if (UCOP_REG_N == 1) { |
| 241 |
tmp = load_reg(s, UCOP_REG_D); |
| 242 |
gen_helper_cp1_putc(tmp); |
| 243 |
dead_tmp(tmp); |
| 244 |
return;
|
| 245 |
} else {
|
| 246 |
ILLEGAL; |
| 247 |
} |
| 248 |
} |
| 249 |
ILLEGAL; |
| 250 |
} |
| 251 |
#endif
|
| 252 |
|
| 253 |
static inline void gen_set_asr(TCGv var, uint32_t mask) |
| 254 |
{
|
| 255 |
TCGv tmp_mask = tcg_const_i32(mask); |
| 256 |
gen_helper_asr_write(cpu_env, var, tmp_mask); |
| 257 |
tcg_temp_free_i32(tmp_mask); |
| 258 |
} |
| 259 |
/* Set NZCV flags from the high 4 bits of var. */
|
| 260 |
#define gen_set_nzcv(var) gen_set_asr(var, ASR_NZCV)
|
| 261 |
|
| 262 |
static void gen_exception(int excp) |
| 263 |
{
|
| 264 |
TCGv tmp = new_tmp(); |
| 265 |
tcg_gen_movi_i32(tmp, excp); |
| 266 |
gen_helper_exception(cpu_env, tmp); |
| 267 |
dead_tmp(tmp); |
| 268 |
} |
| 269 |
|
| 270 |
#define gen_set_CF(var) tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, CF))
|
| 271 |
|
| 272 |
/* Set CF to the top bit of var. */
|
| 273 |
static void gen_set_CF_bit31(TCGv var) |
| 274 |
{
|
| 275 |
TCGv tmp = new_tmp(); |
| 276 |
tcg_gen_shri_i32(tmp, var, 31);
|
| 277 |
gen_set_CF(tmp); |
| 278 |
dead_tmp(tmp); |
| 279 |
} |
| 280 |
|
| 281 |
/* Set N and Z flags from var. */
|
| 282 |
static inline void gen_logic_CC(TCGv var) |
| 283 |
{
|
| 284 |
tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, NF)); |
| 285 |
tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, ZF)); |
| 286 |
} |
| 287 |
|
| 288 |
/* dest = T0 + T1 + CF. */
|
| 289 |
static void gen_add_carry(TCGv dest, TCGv t0, TCGv t1) |
| 290 |
{
|
| 291 |
TCGv tmp; |
| 292 |
tcg_gen_add_i32(dest, t0, t1); |
| 293 |
tmp = load_cpu_field(CF); |
| 294 |
tcg_gen_add_i32(dest, dest, tmp); |
| 295 |
dead_tmp(tmp); |
| 296 |
} |
| 297 |
|
| 298 |
/* dest = T0 - T1 + CF - 1. */
|
| 299 |
static void gen_sub_carry(TCGv dest, TCGv t0, TCGv t1) |
| 300 |
{
|
| 301 |
TCGv tmp; |
| 302 |
tcg_gen_sub_i32(dest, t0, t1); |
| 303 |
tmp = load_cpu_field(CF); |
| 304 |
tcg_gen_add_i32(dest, dest, tmp); |
| 305 |
tcg_gen_subi_i32(dest, dest, 1);
|
| 306 |
dead_tmp(tmp); |
| 307 |
} |
| 308 |
|
| 309 |
static void shifter_out_im(TCGv var, int shift) |
| 310 |
{
|
| 311 |
TCGv tmp = new_tmp(); |
| 312 |
if (shift == 0) { |
| 313 |
tcg_gen_andi_i32(tmp, var, 1);
|
| 314 |
} else {
|
| 315 |
tcg_gen_shri_i32(tmp, var, shift); |
| 316 |
if (shift != 31) { |
| 317 |
tcg_gen_andi_i32(tmp, tmp, 1);
|
| 318 |
} |
| 319 |
} |
| 320 |
gen_set_CF(tmp); |
| 321 |
dead_tmp(tmp); |
| 322 |
} |
| 323 |
|
| 324 |
/* Shift by immediate. Includes special handling for shift == 0. */
|
| 325 |
static inline void gen_uc32_shift_im(TCGv var, int shiftop, int shift, |
| 326 |
int flags)
|
| 327 |
{
|
| 328 |
switch (shiftop) {
|
| 329 |
case 0: /* LSL */ |
| 330 |
if (shift != 0) { |
| 331 |
if (flags) {
|
| 332 |
shifter_out_im(var, 32 - shift);
|
| 333 |
} |
| 334 |
tcg_gen_shli_i32(var, var, shift); |
| 335 |
} |
| 336 |
break;
|
| 337 |
case 1: /* LSR */ |
| 338 |
if (shift == 0) { |
| 339 |
if (flags) {
|
| 340 |
tcg_gen_shri_i32(var, var, 31);
|
| 341 |
gen_set_CF(var); |
| 342 |
} |
| 343 |
tcg_gen_movi_i32(var, 0);
|
| 344 |
} else {
|
| 345 |
if (flags) {
|
| 346 |
shifter_out_im(var, shift - 1);
|
| 347 |
} |
| 348 |
tcg_gen_shri_i32(var, var, shift); |
| 349 |
} |
| 350 |
break;
|
| 351 |
case 2: /* ASR */ |
| 352 |
if (shift == 0) { |
| 353 |
shift = 32;
|
| 354 |
} |
| 355 |
if (flags) {
|
| 356 |
shifter_out_im(var, shift - 1);
|
| 357 |
} |
| 358 |
if (shift == 32) { |
| 359 |
shift = 31;
|
| 360 |
} |
| 361 |
tcg_gen_sari_i32(var, var, shift); |
| 362 |
break;
|
| 363 |
case 3: /* ROR/RRX */ |
| 364 |
if (shift != 0) { |
| 365 |
if (flags) {
|
| 366 |
shifter_out_im(var, shift - 1);
|
| 367 |
} |
| 368 |
tcg_gen_rotri_i32(var, var, shift); break;
|
| 369 |
} else {
|
| 370 |
TCGv tmp = load_cpu_field(CF); |
| 371 |
if (flags) {
|
| 372 |
shifter_out_im(var, 0);
|
| 373 |
} |
| 374 |
tcg_gen_shri_i32(var, var, 1);
|
| 375 |
tcg_gen_shli_i32(tmp, tmp, 31);
|
| 376 |
tcg_gen_or_i32(var, var, tmp); |
| 377 |
dead_tmp(tmp); |
| 378 |
} |
| 379 |
} |
| 380 |
}; |
| 381 |
|
| 382 |
static inline void gen_uc32_shift_reg(TCGv var, int shiftop, |
| 383 |
TCGv shift, int flags)
|
| 384 |
{
|
| 385 |
if (flags) {
|
| 386 |
switch (shiftop) {
|
| 387 |
case 0: |
| 388 |
gen_helper_shl_cc(var, cpu_env, var, shift); |
| 389 |
break;
|
| 390 |
case 1: |
| 391 |
gen_helper_shr_cc(var, cpu_env, var, shift); |
| 392 |
break;
|
| 393 |
case 2: |
| 394 |
gen_helper_sar_cc(var, cpu_env, var, shift); |
| 395 |
break;
|
| 396 |
case 3: |
| 397 |
gen_helper_ror_cc(var, cpu_env, var, shift); |
| 398 |
break;
|
| 399 |
} |
| 400 |
} else {
|
| 401 |
switch (shiftop) {
|
| 402 |
case 0: |
| 403 |
gen_helper_shl(var, var, shift); |
| 404 |
break;
|
| 405 |
case 1: |
| 406 |
gen_helper_shr(var, var, shift); |
| 407 |
break;
|
| 408 |
case 2: |
| 409 |
gen_helper_sar(var, var, shift); |
| 410 |
break;
|
| 411 |
case 3: |
| 412 |
tcg_gen_andi_i32(shift, shift, 0x1f);
|
| 413 |
tcg_gen_rotr_i32(var, var, shift); |
| 414 |
break;
|
| 415 |
} |
| 416 |
} |
| 417 |
dead_tmp(shift); |
| 418 |
} |
| 419 |
|
| 420 |
static void gen_test_cc(int cc, int label) |
| 421 |
{
|
| 422 |
TCGv tmp; |
| 423 |
TCGv tmp2; |
| 424 |
int inv;
|
| 425 |
|
| 426 |
switch (cc) {
|
| 427 |
case 0: /* eq: Z */ |
| 428 |
tmp = load_cpu_field(ZF); |
| 429 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
|
| 430 |
break;
|
| 431 |
case 1: /* ne: !Z */ |
| 432 |
tmp = load_cpu_field(ZF); |
| 433 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label);
|
| 434 |
break;
|
| 435 |
case 2: /* cs: C */ |
| 436 |
tmp = load_cpu_field(CF); |
| 437 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label);
|
| 438 |
break;
|
| 439 |
case 3: /* cc: !C */ |
| 440 |
tmp = load_cpu_field(CF); |
| 441 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
|
| 442 |
break;
|
| 443 |
case 4: /* mi: N */ |
| 444 |
tmp = load_cpu_field(NF); |
| 445 |
tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
|
| 446 |
break;
|
| 447 |
case 5: /* pl: !N */ |
| 448 |
tmp = load_cpu_field(NF); |
| 449 |
tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
|
| 450 |
break;
|
| 451 |
case 6: /* vs: V */ |
| 452 |
tmp = load_cpu_field(VF); |
| 453 |
tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
|
| 454 |
break;
|
| 455 |
case 7: /* vc: !V */ |
| 456 |
tmp = load_cpu_field(VF); |
| 457 |
tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
|
| 458 |
break;
|
| 459 |
case 8: /* hi: C && !Z */ |
| 460 |
inv = gen_new_label(); |
| 461 |
tmp = load_cpu_field(CF); |
| 462 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, inv);
|
| 463 |
dead_tmp(tmp); |
| 464 |
tmp = load_cpu_field(ZF); |
| 465 |
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label);
|
| 466 |
gen_set_label(inv); |
| 467 |
break;
|
| 468 |
case 9: /* ls: !C || Z */ |
| 469 |
tmp = load_cpu_field(CF); |
| 470 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
|
| 471 |
dead_tmp(tmp); |
| 472 |
tmp = load_cpu_field(ZF); |
| 473 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
|
| 474 |
break;
|
| 475 |
case 10: /* ge: N == V -> N ^ V == 0 */ |
| 476 |
tmp = load_cpu_field(VF); |
| 477 |
tmp2 = load_cpu_field(NF); |
| 478 |
tcg_gen_xor_i32(tmp, tmp, tmp2); |
| 479 |
dead_tmp(tmp2); |
| 480 |
tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
|
| 481 |
break;
|
| 482 |
case 11: /* lt: N != V -> N ^ V != 0 */ |
| 483 |
tmp = load_cpu_field(VF); |
| 484 |
tmp2 = load_cpu_field(NF); |
| 485 |
tcg_gen_xor_i32(tmp, tmp, tmp2); |
| 486 |
dead_tmp(tmp2); |
| 487 |
tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
|
| 488 |
break;
|
| 489 |
case 12: /* gt: !Z && N == V */ |
| 490 |
inv = gen_new_label(); |
| 491 |
tmp = load_cpu_field(ZF); |
| 492 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, inv);
|
| 493 |
dead_tmp(tmp); |
| 494 |
tmp = load_cpu_field(VF); |
| 495 |
tmp2 = load_cpu_field(NF); |
| 496 |
tcg_gen_xor_i32(tmp, tmp, tmp2); |
| 497 |
dead_tmp(tmp2); |
| 498 |
tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
|
| 499 |
gen_set_label(inv); |
| 500 |
break;
|
| 501 |
case 13: /* le: Z || N != V */ |
| 502 |
tmp = load_cpu_field(ZF); |
| 503 |
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
|
| 504 |
dead_tmp(tmp); |
| 505 |
tmp = load_cpu_field(VF); |
| 506 |
tmp2 = load_cpu_field(NF); |
| 507 |
tcg_gen_xor_i32(tmp, tmp, tmp2); |
| 508 |
dead_tmp(tmp2); |
| 509 |
tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
|
| 510 |
break;
|
| 511 |
default:
|
| 512 |
fprintf(stderr, "Bad condition code 0x%x\n", cc);
|
| 513 |
abort(); |
| 514 |
} |
| 515 |
dead_tmp(tmp); |
| 516 |
} |
| 517 |
|
| 518 |
static const uint8_t table_logic_cc[16] = { |
| 519 |
1, /* and */ 1, /* xor */ 0, /* sub */ 0, /* rsb */ |
| 520 |
0, /* add */ 0, /* adc */ 0, /* sbc */ 0, /* rsc */ |
| 521 |
1, /* andl */ 1, /* xorl */ 0, /* cmp */ 0, /* cmn */ |
| 522 |
1, /* orr */ 1, /* mov */ 1, /* bic */ 1, /* mvn */ |
| 523 |
}; |
| 524 |
|
| 525 |
/* Set PC state from an immediate address. */
|
| 526 |
static inline void gen_bx_im(DisasContext *s, uint32_t addr) |
| 527 |
{
|
| 528 |
s->is_jmp = DISAS_UPDATE; |
| 529 |
tcg_gen_movi_i32(cpu_R[31], addr & ~3); |
| 530 |
} |
| 531 |
|
| 532 |
/* Set PC state from var. var is marked as dead. */
|
| 533 |
static inline void gen_bx(DisasContext *s, TCGv var) |
| 534 |
{
|
| 535 |
s->is_jmp = DISAS_UPDATE; |
| 536 |
tcg_gen_andi_i32(cpu_R[31], var, ~3); |
| 537 |
dead_tmp(var); |
| 538 |
} |
| 539 |
|
| 540 |
static inline void store_reg_bx(DisasContext *s, int reg, TCGv var) |
| 541 |
{
|
| 542 |
store_reg(s, reg, var); |
| 543 |
} |
| 544 |
|
| 545 |
static inline TCGv gen_ld8s(TCGv addr, int index) |
| 546 |
{
|
| 547 |
TCGv tmp = new_tmp(); |
| 548 |
tcg_gen_qemu_ld8s(tmp, addr, index); |
| 549 |
return tmp;
|
| 550 |
} |
| 551 |
|
| 552 |
static inline TCGv gen_ld8u(TCGv addr, int index) |
| 553 |
{
|
| 554 |
TCGv tmp = new_tmp(); |
| 555 |
tcg_gen_qemu_ld8u(tmp, addr, index); |
| 556 |
return tmp;
|
| 557 |
} |
| 558 |
|
| 559 |
static inline TCGv gen_ld16s(TCGv addr, int index) |
| 560 |
{
|
| 561 |
TCGv tmp = new_tmp(); |
| 562 |
tcg_gen_qemu_ld16s(tmp, addr, index); |
| 563 |
return tmp;
|
| 564 |
} |
| 565 |
|
| 566 |
static inline TCGv gen_ld16u(TCGv addr, int index) |
| 567 |
{
|
| 568 |
TCGv tmp = new_tmp(); |
| 569 |
tcg_gen_qemu_ld16u(tmp, addr, index); |
| 570 |
return tmp;
|
| 571 |
} |
| 572 |
|
| 573 |
static inline TCGv gen_ld32(TCGv addr, int index) |
| 574 |
{
|
| 575 |
TCGv tmp = new_tmp(); |
| 576 |
tcg_gen_qemu_ld32u(tmp, addr, index); |
| 577 |
return tmp;
|
| 578 |
} |
| 579 |
|
| 580 |
static inline TCGv_i64 gen_ld64(TCGv addr, int index) |
| 581 |
{
|
| 582 |
TCGv_i64 tmp = tcg_temp_new_i64(); |
| 583 |
tcg_gen_qemu_ld64(tmp, addr, index); |
| 584 |
return tmp;
|
| 585 |
} |
| 586 |
|
| 587 |
static inline void gen_st8(TCGv val, TCGv addr, int index) |
| 588 |
{
|
| 589 |
tcg_gen_qemu_st8(val, addr, index); |
| 590 |
dead_tmp(val); |
| 591 |
} |
| 592 |
|
| 593 |
static inline void gen_st16(TCGv val, TCGv addr, int index) |
| 594 |
{
|
| 595 |
tcg_gen_qemu_st16(val, addr, index); |
| 596 |
dead_tmp(val); |
| 597 |
} |
| 598 |
|
| 599 |
static inline void gen_st32(TCGv val, TCGv addr, int index) |
| 600 |
{
|
| 601 |
tcg_gen_qemu_st32(val, addr, index); |
| 602 |
dead_tmp(val); |
| 603 |
} |
| 604 |
|
| 605 |
static inline void gen_st64(TCGv_i64 val, TCGv addr, int index) |
| 606 |
{
|
| 607 |
tcg_gen_qemu_st64(val, addr, index); |
| 608 |
tcg_temp_free_i64(val); |
| 609 |
} |
| 610 |
|
| 611 |
static inline void gen_set_pc_im(uint32_t val) |
| 612 |
{
|
| 613 |
tcg_gen_movi_i32(cpu_R[31], val);
|
| 614 |
} |
| 615 |
|
| 616 |
/* Force a TB lookup after an instruction that changes the CPU state. */
|
| 617 |
static inline void gen_lookup_tb(DisasContext *s) |
| 618 |
{
|
| 619 |
tcg_gen_movi_i32(cpu_R[31], s->pc & ~1); |
| 620 |
s->is_jmp = DISAS_UPDATE; |
| 621 |
} |
| 622 |
|
| 623 |
static inline void gen_add_data_offset(DisasContext *s, unsigned int insn, |
| 624 |
TCGv var) |
| 625 |
{
|
| 626 |
int val;
|
| 627 |
TCGv offset; |
| 628 |
|
| 629 |
if (UCOP_SET(29)) { |
| 630 |
/* immediate */
|
| 631 |
val = UCOP_IMM14; |
| 632 |
if (!UCOP_SET_U) {
|
| 633 |
val = -val; |
| 634 |
} |
| 635 |
if (val != 0) { |
| 636 |
tcg_gen_addi_i32(var, var, val); |
| 637 |
} |
| 638 |
} else {
|
| 639 |
/* shift/register */
|
| 640 |
offset = load_reg(s, UCOP_REG_M); |
| 641 |
gen_uc32_shift_im(offset, UCOP_SH_OP, UCOP_SH_IM, 0);
|
| 642 |
if (!UCOP_SET_U) {
|
| 643 |
tcg_gen_sub_i32(var, var, offset); |
| 644 |
} else {
|
| 645 |
tcg_gen_add_i32(var, var, offset); |
| 646 |
} |
| 647 |
dead_tmp(offset); |
| 648 |
} |
| 649 |
} |
| 650 |
|
| 651 |
static inline void gen_add_datah_offset(DisasContext *s, unsigned int insn, |
| 652 |
TCGv var) |
| 653 |
{
|
| 654 |
int val;
|
| 655 |
TCGv offset; |
| 656 |
|
| 657 |
if (UCOP_SET(26)) { |
| 658 |
/* immediate */
|
| 659 |
val = (insn & 0x1f) | ((insn >> 4) & 0x3e0); |
| 660 |
if (!UCOP_SET_U) {
|
| 661 |
val = -val; |
| 662 |
} |
| 663 |
if (val != 0) { |
| 664 |
tcg_gen_addi_i32(var, var, val); |
| 665 |
} |
| 666 |
} else {
|
| 667 |
/* register */
|
| 668 |
offset = load_reg(s, UCOP_REG_M); |
| 669 |
if (!UCOP_SET_U) {
|
| 670 |
tcg_gen_sub_i32(var, var, offset); |
| 671 |
} else {
|
| 672 |
tcg_gen_add_i32(var, var, offset); |
| 673 |
} |
| 674 |
dead_tmp(offset); |
| 675 |
} |
| 676 |
} |
| 677 |
|
| 678 |
static inline long ucf64_reg_offset(int reg) |
| 679 |
{
|
| 680 |
if (reg & 1) { |
| 681 |
return offsetof(CPUUniCore32State, ucf64.regs[reg >> 1]) |
| 682 |
+ offsetof(CPU_DoubleU, l.upper); |
| 683 |
} else {
|
| 684 |
return offsetof(CPUUniCore32State, ucf64.regs[reg >> 1]) |
| 685 |
+ offsetof(CPU_DoubleU, l.lower); |
| 686 |
} |
| 687 |
} |
| 688 |
|
| 689 |
#define ucf64_gen_ld32(reg) load_cpu_offset(ucf64_reg_offset(reg))
|
| 690 |
#define ucf64_gen_st32(var, reg) store_cpu_offset(var, ucf64_reg_offset(reg))
|
| 691 |
|
| 692 |
/* UniCore-F64 single load/store I_offset */
|
| 693 |
static void do_ucf64_ldst_i(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 694 |
{
|
| 695 |
int offset;
|
| 696 |
TCGv tmp; |
| 697 |
TCGv addr; |
| 698 |
|
| 699 |
addr = load_reg(s, UCOP_REG_N); |
| 700 |
if (!UCOP_SET_P && !UCOP_SET_W) {
|
| 701 |
ILLEGAL; |
| 702 |
} |
| 703 |
|
| 704 |
if (UCOP_SET_P) {
|
| 705 |
offset = UCOP_IMM10 << 2;
|
| 706 |
if (!UCOP_SET_U) {
|
| 707 |
offset = -offset; |
| 708 |
} |
| 709 |
if (offset != 0) { |
| 710 |
tcg_gen_addi_i32(addr, addr, offset); |
| 711 |
} |
| 712 |
} |
| 713 |
|
| 714 |
if (UCOP_SET_L) { /* load */ |
| 715 |
tmp = gen_ld32(addr, IS_USER(s)); |
| 716 |
ucf64_gen_st32(tmp, UCOP_REG_D); |
| 717 |
} else { /* store */ |
| 718 |
tmp = ucf64_gen_ld32(UCOP_REG_D); |
| 719 |
gen_st32(tmp, addr, IS_USER(s)); |
| 720 |
} |
| 721 |
|
| 722 |
if (!UCOP_SET_P) {
|
| 723 |
offset = UCOP_IMM10 << 2;
|
| 724 |
if (!UCOP_SET_U) {
|
| 725 |
offset = -offset; |
| 726 |
} |
| 727 |
if (offset != 0) { |
| 728 |
tcg_gen_addi_i32(addr, addr, offset); |
| 729 |
} |
| 730 |
} |
| 731 |
if (UCOP_SET_W) {
|
| 732 |
store_reg(s, UCOP_REG_N, addr); |
| 733 |
} else {
|
| 734 |
dead_tmp(addr); |
| 735 |
} |
| 736 |
} |
| 737 |
|
| 738 |
/* UniCore-F64 load/store multiple words */
|
| 739 |
static void do_ucf64_ldst_m(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 740 |
{
|
| 741 |
unsigned int i; |
| 742 |
int j, n, freg;
|
| 743 |
TCGv tmp; |
| 744 |
TCGv addr; |
| 745 |
|
| 746 |
if (UCOP_REG_D != 0) { |
| 747 |
ILLEGAL; |
| 748 |
} |
| 749 |
if (UCOP_REG_N == 31) { |
| 750 |
ILLEGAL; |
| 751 |
} |
| 752 |
if ((insn << 24) == 0) { |
| 753 |
ILLEGAL; |
| 754 |
} |
| 755 |
|
| 756 |
addr = load_reg(s, UCOP_REG_N); |
| 757 |
|
| 758 |
n = 0;
|
| 759 |
for (i = 0; i < 8; i++) { |
| 760 |
if (UCOP_SET(i)) {
|
| 761 |
n++; |
| 762 |
} |
| 763 |
} |
| 764 |
|
| 765 |
if (UCOP_SET_U) {
|
| 766 |
if (UCOP_SET_P) { /* pre increment */ |
| 767 |
tcg_gen_addi_i32(addr, addr, 4);
|
| 768 |
} /* unnecessary to do anything when post increment */
|
| 769 |
} else {
|
| 770 |
if (UCOP_SET_P) { /* pre decrement */ |
| 771 |
tcg_gen_addi_i32(addr, addr, -(n * 4));
|
| 772 |
} else { /* post decrement */ |
| 773 |
if (n != 1) { |
| 774 |
tcg_gen_addi_i32(addr, addr, -((n - 1) * 4)); |
| 775 |
} |
| 776 |
} |
| 777 |
} |
| 778 |
|
| 779 |
freg = ((insn >> 8) & 3) << 3; /* freg should be 0, 8, 16, 24 */ |
| 780 |
|
| 781 |
for (i = 0, j = 0; i < 8; i++, freg++) { |
| 782 |
if (!UCOP_SET(i)) {
|
| 783 |
continue;
|
| 784 |
} |
| 785 |
|
| 786 |
if (UCOP_SET_L) { /* load */ |
| 787 |
tmp = gen_ld32(addr, IS_USER(s)); |
| 788 |
ucf64_gen_st32(tmp, freg); |
| 789 |
} else { /* store */ |
| 790 |
tmp = ucf64_gen_ld32(freg); |
| 791 |
gen_st32(tmp, addr, IS_USER(s)); |
| 792 |
} |
| 793 |
|
| 794 |
j++; |
| 795 |
/* unnecessary to add after the last transfer */
|
| 796 |
if (j != n) {
|
| 797 |
tcg_gen_addi_i32(addr, addr, 4);
|
| 798 |
} |
| 799 |
} |
| 800 |
|
| 801 |
if (UCOP_SET_W) { /* write back */ |
| 802 |
if (UCOP_SET_U) {
|
| 803 |
if (!UCOP_SET_P) { /* post increment */ |
| 804 |
tcg_gen_addi_i32(addr, addr, 4);
|
| 805 |
} /* unnecessary to do anything when pre increment */
|
| 806 |
} else {
|
| 807 |
if (UCOP_SET_P) {
|
| 808 |
/* pre decrement */
|
| 809 |
if (n != 1) { |
| 810 |
tcg_gen_addi_i32(addr, addr, -((n - 1) * 4)); |
| 811 |
} |
| 812 |
} else {
|
| 813 |
/* post decrement */
|
| 814 |
tcg_gen_addi_i32(addr, addr, -(n * 4));
|
| 815 |
} |
| 816 |
} |
| 817 |
store_reg(s, UCOP_REG_N, addr); |
| 818 |
} else {
|
| 819 |
dead_tmp(addr); |
| 820 |
} |
| 821 |
} |
| 822 |
|
| 823 |
/* UniCore-F64 mrc/mcr */
|
| 824 |
static void do_ucf64_trans(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 825 |
{
|
| 826 |
TCGv tmp; |
| 827 |
|
| 828 |
if ((insn & 0xfe0003ff) == 0xe2000000) { |
| 829 |
/* control register */
|
| 830 |
if ((UCOP_REG_N != UC32_UCF64_FPSCR) || (UCOP_REG_D == 31)) { |
| 831 |
ILLEGAL; |
| 832 |
} |
| 833 |
if (UCOP_SET(24)) { |
| 834 |
/* CFF */
|
| 835 |
tmp = new_tmp(); |
| 836 |
gen_helper_ucf64_get_fpscr(tmp, cpu_env); |
| 837 |
store_reg(s, UCOP_REG_D, tmp); |
| 838 |
} else {
|
| 839 |
/* CTF */
|
| 840 |
tmp = load_reg(s, UCOP_REG_D); |
| 841 |
gen_helper_ucf64_set_fpscr(cpu_env, tmp); |
| 842 |
dead_tmp(tmp); |
| 843 |
gen_lookup_tb(s); |
| 844 |
} |
| 845 |
return;
|
| 846 |
} |
| 847 |
if ((insn & 0xfe0003ff) == 0xe0000000) { |
| 848 |
/* general register */
|
| 849 |
if (UCOP_REG_D == 31) { |
| 850 |
ILLEGAL; |
| 851 |
} |
| 852 |
if (UCOP_SET(24)) { /* MFF */ |
| 853 |
tmp = ucf64_gen_ld32(UCOP_REG_N); |
| 854 |
store_reg(s, UCOP_REG_D, tmp); |
| 855 |
} else { /* MTF */ |
| 856 |
tmp = load_reg(s, UCOP_REG_D); |
| 857 |
ucf64_gen_st32(tmp, UCOP_REG_N); |
| 858 |
} |
| 859 |
return;
|
| 860 |
} |
| 861 |
if ((insn & 0xfb000000) == 0xe9000000) { |
| 862 |
/* MFFC */
|
| 863 |
if (UCOP_REG_D != 31) { |
| 864 |
ILLEGAL; |
| 865 |
} |
| 866 |
if (UCOP_UCF64_COND & 0x8) { |
| 867 |
ILLEGAL; |
| 868 |
} |
| 869 |
|
| 870 |
tmp = new_tmp(); |
| 871 |
tcg_gen_movi_i32(tmp, UCOP_UCF64_COND); |
| 872 |
if (UCOP_SET(26)) { |
| 873 |
tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_N)); |
| 874 |
tcg_gen_ld_i64(cpu_F1d, cpu_env, ucf64_reg_offset(UCOP_REG_M)); |
| 875 |
gen_helper_ucf64_cmpd(cpu_F0d, cpu_F1d, tmp, cpu_env); |
| 876 |
} else {
|
| 877 |
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_N)); |
| 878 |
tcg_gen_ld_i32(cpu_F1s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); |
| 879 |
gen_helper_ucf64_cmps(cpu_F0s, cpu_F1s, tmp, cpu_env); |
| 880 |
} |
| 881 |
dead_tmp(tmp); |
| 882 |
return;
|
| 883 |
} |
| 884 |
ILLEGAL; |
| 885 |
} |
| 886 |
|
| 887 |
/* UniCore-F64 convert instructions */
|
| 888 |
static void do_ucf64_fcvt(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 889 |
{
|
| 890 |
if (UCOP_UCF64_FMT == 3) { |
| 891 |
ILLEGAL; |
| 892 |
} |
| 893 |
if (UCOP_REG_N != 0) { |
| 894 |
ILLEGAL; |
| 895 |
} |
| 896 |
switch (UCOP_UCF64_FUNC) {
|
| 897 |
case 0: /* cvt.s */ |
| 898 |
switch (UCOP_UCF64_FMT) {
|
| 899 |
case 1 /* d */: |
| 900 |
tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_M)); |
| 901 |
gen_helper_ucf64_df2sf(cpu_F0s, cpu_F0d, cpu_env); |
| 902 |
tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D)); |
| 903 |
break;
|
| 904 |
case 2 /* w */: |
| 905 |
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); |
| 906 |
gen_helper_ucf64_si2sf(cpu_F0s, cpu_F0s, cpu_env); |
| 907 |
tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D)); |
| 908 |
break;
|
| 909 |
default /* s */: |
| 910 |
ILLEGAL; |
| 911 |
break;
|
| 912 |
} |
| 913 |
break;
|
| 914 |
case 1: /* cvt.d */ |
| 915 |
switch (UCOP_UCF64_FMT) {
|
| 916 |
case 0 /* s */: |
| 917 |
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); |
| 918 |
gen_helper_ucf64_sf2df(cpu_F0d, cpu_F0s, cpu_env); |
| 919 |
tcg_gen_st_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_D)); |
| 920 |
break;
|
| 921 |
case 2 /* w */: |
| 922 |
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); |
| 923 |
gen_helper_ucf64_si2df(cpu_F0d, cpu_F0s, cpu_env); |
| 924 |
tcg_gen_st_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_D)); |
| 925 |
break;
|
| 926 |
default /* d */: |
| 927 |
ILLEGAL; |
| 928 |
break;
|
| 929 |
} |
| 930 |
break;
|
| 931 |
case 4: /* cvt.w */ |
| 932 |
switch (UCOP_UCF64_FMT) {
|
| 933 |
case 0 /* s */: |
| 934 |
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); |
| 935 |
gen_helper_ucf64_sf2si(cpu_F0s, cpu_F0s, cpu_env); |
| 936 |
tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D)); |
| 937 |
break;
|
| 938 |
case 1 /* d */: |
| 939 |
tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_M)); |
| 940 |
gen_helper_ucf64_df2si(cpu_F0s, cpu_F0d, cpu_env); |
| 941 |
tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D)); |
| 942 |
break;
|
| 943 |
default /* w */: |
| 944 |
ILLEGAL; |
| 945 |
break;
|
| 946 |
} |
| 947 |
break;
|
| 948 |
default:
|
| 949 |
ILLEGAL; |
| 950 |
} |
| 951 |
} |
| 952 |
|
| 953 |
/* UniCore-F64 compare instructions */
|
| 954 |
static void do_ucf64_fcmp(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 955 |
{
|
| 956 |
if (UCOP_SET(25)) { |
| 957 |
ILLEGAL; |
| 958 |
} |
| 959 |
if (UCOP_REG_D != 0) { |
| 960 |
ILLEGAL; |
| 961 |
} |
| 962 |
|
| 963 |
ILLEGAL; /* TODO */
|
| 964 |
if (UCOP_SET(24)) { |
| 965 |
tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_N)); |
| 966 |
tcg_gen_ld_i64(cpu_F1d, cpu_env, ucf64_reg_offset(UCOP_REG_M)); |
| 967 |
/* gen_helper_ucf64_cmpd(cpu_F0d, cpu_F1d, cpu_env); */
|
| 968 |
} else {
|
| 969 |
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_N)); |
| 970 |
tcg_gen_ld_i32(cpu_F1s, cpu_env, ucf64_reg_offset(UCOP_REG_M)); |
| 971 |
/* gen_helper_ucf64_cmps(cpu_F0s, cpu_F1s, cpu_env); */
|
| 972 |
} |
| 973 |
} |
| 974 |
|
| 975 |
#define gen_helper_ucf64_movs(x, y) do { } while (0) |
| 976 |
#define gen_helper_ucf64_movd(x, y) do { } while (0) |
| 977 |
|
| 978 |
#define UCF64_OP1(name) do { \ |
| 979 |
if (UCOP_REG_N != 0) { \ |
| 980 |
ILLEGAL; \ |
| 981 |
} \ |
| 982 |
switch (UCOP_UCF64_FMT) { \
|
| 983 |
case 0 /* s */: \ |
| 984 |
tcg_gen_ld_i32(cpu_F0s, cpu_env, \ |
| 985 |
ucf64_reg_offset(UCOP_REG_M)); \ |
| 986 |
gen_helper_ucf64_##name##s(cpu_F0s, cpu_F0s); \ |
| 987 |
tcg_gen_st_i32(cpu_F0s, cpu_env, \ |
| 988 |
ucf64_reg_offset(UCOP_REG_D)); \ |
| 989 |
break; \
|
| 990 |
case 1 /* d */: \ |
| 991 |
tcg_gen_ld_i64(cpu_F0d, cpu_env, \ |
| 992 |
ucf64_reg_offset(UCOP_REG_M)); \ |
| 993 |
gen_helper_ucf64_##name##d(cpu_F0d, cpu_F0d); \ |
| 994 |
tcg_gen_st_i64(cpu_F0d, cpu_env, \ |
| 995 |
ucf64_reg_offset(UCOP_REG_D)); \ |
| 996 |
break; \
|
| 997 |
case 2 /* w */: \ |
| 998 |
ILLEGAL; \ |
| 999 |
break; \
|
| 1000 |
} \ |
| 1001 |
} while (0) |
| 1002 |
|
| 1003 |
#define UCF64_OP2(name) do { \ |
| 1004 |
switch (UCOP_UCF64_FMT) { \
|
| 1005 |
case 0 /* s */: \ |
| 1006 |
tcg_gen_ld_i32(cpu_F0s, cpu_env, \ |
| 1007 |
ucf64_reg_offset(UCOP_REG_N)); \ |
| 1008 |
tcg_gen_ld_i32(cpu_F1s, cpu_env, \ |
| 1009 |
ucf64_reg_offset(UCOP_REG_M)); \ |
| 1010 |
gen_helper_ucf64_##name##s(cpu_F0s, \ |
| 1011 |
cpu_F0s, cpu_F1s, cpu_env); \ |
| 1012 |
tcg_gen_st_i32(cpu_F0s, cpu_env, \ |
| 1013 |
ucf64_reg_offset(UCOP_REG_D)); \ |
| 1014 |
break; \
|
| 1015 |
case 1 /* d */: \ |
| 1016 |
tcg_gen_ld_i64(cpu_F0d, cpu_env, \ |
| 1017 |
ucf64_reg_offset(UCOP_REG_N)); \ |
| 1018 |
tcg_gen_ld_i64(cpu_F1d, cpu_env, \ |
| 1019 |
ucf64_reg_offset(UCOP_REG_M)); \ |
| 1020 |
gen_helper_ucf64_##name##d(cpu_F0d, \ |
| 1021 |
cpu_F0d, cpu_F1d, cpu_env); \ |
| 1022 |
tcg_gen_st_i64(cpu_F0d, cpu_env, \ |
| 1023 |
ucf64_reg_offset(UCOP_REG_D)); \ |
| 1024 |
break; \
|
| 1025 |
case 2 /* w */: \ |
| 1026 |
ILLEGAL; \ |
| 1027 |
break; \
|
| 1028 |
} \ |
| 1029 |
} while (0) |
| 1030 |
|
| 1031 |
/* UniCore-F64 data processing */
|
| 1032 |
static void do_ucf64_datap(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 1033 |
{
|
| 1034 |
if (UCOP_UCF64_FMT == 3) { |
| 1035 |
ILLEGAL; |
| 1036 |
} |
| 1037 |
switch (UCOP_UCF64_FUNC) {
|
| 1038 |
case 0: /* add */ |
| 1039 |
UCF64_OP2(add); |
| 1040 |
break;
|
| 1041 |
case 1: /* sub */ |
| 1042 |
UCF64_OP2(sub); |
| 1043 |
break;
|
| 1044 |
case 2: /* mul */ |
| 1045 |
UCF64_OP2(mul); |
| 1046 |
break;
|
| 1047 |
case 4: /* div */ |
| 1048 |
UCF64_OP2(div); |
| 1049 |
break;
|
| 1050 |
case 5: /* abs */ |
| 1051 |
UCF64_OP1(abs); |
| 1052 |
break;
|
| 1053 |
case 6: /* mov */ |
| 1054 |
UCF64_OP1(mov); |
| 1055 |
break;
|
| 1056 |
case 7: /* neg */ |
| 1057 |
UCF64_OP1(neg); |
| 1058 |
break;
|
| 1059 |
default:
|
| 1060 |
ILLEGAL; |
| 1061 |
} |
| 1062 |
} |
| 1063 |
|
| 1064 |
/* Disassemble an F64 instruction */
|
| 1065 |
static void disas_ucf64_insn(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 1066 |
{
|
| 1067 |
if (!UCOP_SET(29)) { |
| 1068 |
if (UCOP_SET(26)) { |
| 1069 |
do_ucf64_ldst_m(env, s, insn); |
| 1070 |
} else {
|
| 1071 |
do_ucf64_ldst_i(env, s, insn); |
| 1072 |
} |
| 1073 |
} else {
|
| 1074 |
if (UCOP_SET(5)) { |
| 1075 |
switch ((insn >> 26) & 0x3) { |
| 1076 |
case 0: |
| 1077 |
do_ucf64_datap(env, s, insn); |
| 1078 |
break;
|
| 1079 |
case 1: |
| 1080 |
ILLEGAL; |
| 1081 |
break;
|
| 1082 |
case 2: |
| 1083 |
do_ucf64_fcvt(env, s, insn); |
| 1084 |
break;
|
| 1085 |
case 3: |
| 1086 |
do_ucf64_fcmp(env, s, insn); |
| 1087 |
break;
|
| 1088 |
} |
| 1089 |
} else {
|
| 1090 |
do_ucf64_trans(env, s, insn); |
| 1091 |
} |
| 1092 |
} |
| 1093 |
} |
| 1094 |
|
| 1095 |
static inline void gen_goto_tb(DisasContext *s, int n, uint32_t dest) |
| 1096 |
{
|
| 1097 |
TranslationBlock *tb; |
| 1098 |
|
| 1099 |
tb = s->tb; |
| 1100 |
if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
|
| 1101 |
tcg_gen_goto_tb(n); |
| 1102 |
gen_set_pc_im(dest); |
| 1103 |
tcg_gen_exit_tb((uintptr_t)tb + n); |
| 1104 |
} else {
|
| 1105 |
gen_set_pc_im(dest); |
| 1106 |
tcg_gen_exit_tb(0);
|
| 1107 |
} |
| 1108 |
} |
| 1109 |
|
| 1110 |
static inline void gen_jmp(DisasContext *s, uint32_t dest) |
| 1111 |
{
|
| 1112 |
if (unlikely(s->singlestep_enabled)) {
|
| 1113 |
/* An indirect jump so that we still trigger the debug exception. */
|
| 1114 |
gen_bx_im(s, dest); |
| 1115 |
} else {
|
| 1116 |
gen_goto_tb(s, 0, dest);
|
| 1117 |
s->is_jmp = DISAS_TB_JUMP; |
| 1118 |
} |
| 1119 |
} |
| 1120 |
|
| 1121 |
static inline void gen_mulxy(TCGv t0, TCGv t1, int x, int y) |
| 1122 |
{
|
| 1123 |
if (x) {
|
| 1124 |
tcg_gen_sari_i32(t0, t0, 16);
|
| 1125 |
} else {
|
| 1126 |
gen_sxth(t0); |
| 1127 |
} |
| 1128 |
if (y) {
|
| 1129 |
tcg_gen_sari_i32(t1, t1, 16);
|
| 1130 |
} else {
|
| 1131 |
gen_sxth(t1); |
| 1132 |
} |
| 1133 |
tcg_gen_mul_i32(t0, t0, t1); |
| 1134 |
} |
| 1135 |
|
| 1136 |
/* Returns nonzero if access to the PSR is not permitted. Marks t0 as dead. */
|
| 1137 |
static int gen_set_psr(DisasContext *s, uint32_t mask, int bsr, TCGv t0) |
| 1138 |
{
|
| 1139 |
TCGv tmp; |
| 1140 |
if (bsr) {
|
| 1141 |
/* ??? This is also undefined in system mode. */
|
| 1142 |
if (IS_USER(s)) {
|
| 1143 |
return 1; |
| 1144 |
} |
| 1145 |
|
| 1146 |
tmp = load_cpu_field(bsr); |
| 1147 |
tcg_gen_andi_i32(tmp, tmp, ~mask); |
| 1148 |
tcg_gen_andi_i32(t0, t0, mask); |
| 1149 |
tcg_gen_or_i32(tmp, tmp, t0); |
| 1150 |
store_cpu_field(tmp, bsr); |
| 1151 |
} else {
|
| 1152 |
gen_set_asr(t0, mask); |
| 1153 |
} |
| 1154 |
dead_tmp(t0); |
| 1155 |
gen_lookup_tb(s); |
| 1156 |
return 0; |
| 1157 |
} |
| 1158 |
|
| 1159 |
/* Generate an old-style exception return. Marks pc as dead. */
|
| 1160 |
static void gen_exception_return(DisasContext *s, TCGv pc) |
| 1161 |
{
|
| 1162 |
TCGv tmp; |
| 1163 |
store_reg(s, 31, pc);
|
| 1164 |
tmp = load_cpu_field(bsr); |
| 1165 |
gen_set_asr(tmp, 0xffffffff);
|
| 1166 |
dead_tmp(tmp); |
| 1167 |
s->is_jmp = DISAS_UPDATE; |
| 1168 |
} |
| 1169 |
|
| 1170 |
static void disas_coproc_insn(CPUUniCore32State *env, DisasContext *s, |
| 1171 |
uint32_t insn) |
| 1172 |
{
|
| 1173 |
switch (UCOP_CPNUM) {
|
| 1174 |
#ifndef CONFIG_USER_ONLY
|
| 1175 |
case 0: |
| 1176 |
disas_cp0_insn(env, s, insn); |
| 1177 |
break;
|
| 1178 |
case 1: |
| 1179 |
disas_ocd_insn(env, s, insn); |
| 1180 |
break;
|
| 1181 |
#endif
|
| 1182 |
case 2: |
| 1183 |
disas_ucf64_insn(env, s, insn); |
| 1184 |
break;
|
| 1185 |
default:
|
| 1186 |
/* Unknown coprocessor. */
|
| 1187 |
cpu_abort(env, "Unknown coprocessor!");
|
| 1188 |
} |
| 1189 |
} |
| 1190 |
|
| 1191 |
/* data processing instructions */
|
| 1192 |
static void do_datap(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 1193 |
{
|
| 1194 |
TCGv tmp; |
| 1195 |
TCGv tmp2; |
| 1196 |
int logic_cc;
|
| 1197 |
|
| 1198 |
if (UCOP_OPCODES == 0x0f || UCOP_OPCODES == 0x0d) { |
| 1199 |
if (UCOP_SET(23)) { /* CMOV instructions */ |
| 1200 |
if ((UCOP_CMOV_COND == 0xe) || (UCOP_CMOV_COND == 0xf)) { |
| 1201 |
ILLEGAL; |
| 1202 |
} |
| 1203 |
/* if not always execute, we generate a conditional jump to
|
| 1204 |
next instruction */
|
| 1205 |
s->condlabel = gen_new_label(); |
| 1206 |
gen_test_cc(UCOP_CMOV_COND ^ 1, s->condlabel);
|
| 1207 |
s->condjmp = 1;
|
| 1208 |
} |
| 1209 |
} |
| 1210 |
|
| 1211 |
logic_cc = table_logic_cc[UCOP_OPCODES] & (UCOP_SET_S >> 24);
|
| 1212 |
|
| 1213 |
if (UCOP_SET(29)) { |
| 1214 |
unsigned int val; |
| 1215 |
/* immediate operand */
|
| 1216 |
val = UCOP_IMM_9; |
| 1217 |
if (UCOP_SH_IM) {
|
| 1218 |
val = (val >> UCOP_SH_IM) | (val << (32 - UCOP_SH_IM));
|
| 1219 |
} |
| 1220 |
tmp2 = new_tmp(); |
| 1221 |
tcg_gen_movi_i32(tmp2, val); |
| 1222 |
if (logic_cc && UCOP_SH_IM) {
|
| 1223 |
gen_set_CF_bit31(tmp2); |
| 1224 |
} |
| 1225 |
} else {
|
| 1226 |
/* register */
|
| 1227 |
tmp2 = load_reg(s, UCOP_REG_M); |
| 1228 |
if (UCOP_SET(5)) { |
| 1229 |
tmp = load_reg(s, UCOP_REG_S); |
| 1230 |
gen_uc32_shift_reg(tmp2, UCOP_SH_OP, tmp, logic_cc); |
| 1231 |
} else {
|
| 1232 |
gen_uc32_shift_im(tmp2, UCOP_SH_OP, UCOP_SH_IM, logic_cc); |
| 1233 |
} |
| 1234 |
} |
| 1235 |
|
| 1236 |
if (UCOP_OPCODES != 0x0f && UCOP_OPCODES != 0x0d) { |
| 1237 |
tmp = load_reg(s, UCOP_REG_N); |
| 1238 |
} else {
|
| 1239 |
TCGV_UNUSED(tmp); |
| 1240 |
} |
| 1241 |
|
| 1242 |
switch (UCOP_OPCODES) {
|
| 1243 |
case 0x00: |
| 1244 |
tcg_gen_and_i32(tmp, tmp, tmp2); |
| 1245 |
if (logic_cc) {
|
| 1246 |
gen_logic_CC(tmp); |
| 1247 |
} |
| 1248 |
store_reg_bx(s, UCOP_REG_D, tmp); |
| 1249 |
break;
|
| 1250 |
case 0x01: |
| 1251 |
tcg_gen_xor_i32(tmp, tmp, tmp2); |
| 1252 |
if (logic_cc) {
|
| 1253 |
gen_logic_CC(tmp); |
| 1254 |
} |
| 1255 |
store_reg_bx(s, UCOP_REG_D, tmp); |
| 1256 |
break;
|
| 1257 |
case 0x02: |
| 1258 |
if (UCOP_SET_S && UCOP_REG_D == 31) { |
| 1259 |
/* SUBS r31, ... is used for exception return. */
|
| 1260 |
if (IS_USER(s)) {
|
| 1261 |
ILLEGAL; |
| 1262 |
} |
| 1263 |
gen_helper_sub_cc(tmp, cpu_env, tmp, tmp2); |
| 1264 |
gen_exception_return(s, tmp); |
| 1265 |
} else {
|
| 1266 |
if (UCOP_SET_S) {
|
| 1267 |
gen_helper_sub_cc(tmp, cpu_env, tmp, tmp2); |
| 1268 |
} else {
|
| 1269 |
tcg_gen_sub_i32(tmp, tmp, tmp2); |
| 1270 |
} |
| 1271 |
store_reg_bx(s, UCOP_REG_D, tmp); |
| 1272 |
} |
| 1273 |
break;
|
| 1274 |
case 0x03: |
| 1275 |
if (UCOP_SET_S) {
|
| 1276 |
gen_helper_sub_cc(tmp, cpu_env, tmp2, tmp); |
| 1277 |
} else {
|
| 1278 |
tcg_gen_sub_i32(tmp, tmp2, tmp); |
| 1279 |
} |
| 1280 |
store_reg_bx(s, UCOP_REG_D, tmp); |
| 1281 |
break;
|
| 1282 |
case 0x04: |
| 1283 |
if (UCOP_SET_S) {
|
| 1284 |
gen_helper_add_cc(tmp, cpu_env, tmp, tmp2); |
| 1285 |
} else {
|
| 1286 |
tcg_gen_add_i32(tmp, tmp, tmp2); |
| 1287 |
} |
| 1288 |
store_reg_bx(s, UCOP_REG_D, tmp); |
| 1289 |
break;
|
| 1290 |
case 0x05: |
| 1291 |
if (UCOP_SET_S) {
|
| 1292 |
gen_helper_adc_cc(tmp, cpu_env, tmp, tmp2); |
| 1293 |
} else {
|
| 1294 |
gen_add_carry(tmp, tmp, tmp2); |
| 1295 |
} |
| 1296 |
store_reg_bx(s, UCOP_REG_D, tmp); |
| 1297 |
break;
|
| 1298 |
case 0x06: |
| 1299 |
if (UCOP_SET_S) {
|
| 1300 |
gen_helper_sbc_cc(tmp, cpu_env, tmp, tmp2); |
| 1301 |
} else {
|
| 1302 |
gen_sub_carry(tmp, tmp, tmp2); |
| 1303 |
} |
| 1304 |
store_reg_bx(s, UCOP_REG_D, tmp); |
| 1305 |
break;
|
| 1306 |
case 0x07: |
| 1307 |
if (UCOP_SET_S) {
|
| 1308 |
gen_helper_sbc_cc(tmp, cpu_env, tmp2, tmp); |
| 1309 |
} else {
|
| 1310 |
gen_sub_carry(tmp, tmp2, tmp); |
| 1311 |
} |
| 1312 |
store_reg_bx(s, UCOP_REG_D, tmp); |
| 1313 |
break;
|
| 1314 |
case 0x08: |
| 1315 |
if (UCOP_SET_S) {
|
| 1316 |
tcg_gen_and_i32(tmp, tmp, tmp2); |
| 1317 |
gen_logic_CC(tmp); |
| 1318 |
} |
| 1319 |
dead_tmp(tmp); |
| 1320 |
break;
|
| 1321 |
case 0x09: |
| 1322 |
if (UCOP_SET_S) {
|
| 1323 |
tcg_gen_xor_i32(tmp, tmp, tmp2); |
| 1324 |
gen_logic_CC(tmp); |
| 1325 |
} |
| 1326 |
dead_tmp(tmp); |
| 1327 |
break;
|
| 1328 |
case 0x0a: |
| 1329 |
if (UCOP_SET_S) {
|
| 1330 |
gen_helper_sub_cc(tmp, cpu_env, tmp, tmp2); |
| 1331 |
} |
| 1332 |
dead_tmp(tmp); |
| 1333 |
break;
|
| 1334 |
case 0x0b: |
| 1335 |
if (UCOP_SET_S) {
|
| 1336 |
gen_helper_add_cc(tmp, cpu_env, tmp, tmp2); |
| 1337 |
} |
| 1338 |
dead_tmp(tmp); |
| 1339 |
break;
|
| 1340 |
case 0x0c: |
| 1341 |
tcg_gen_or_i32(tmp, tmp, tmp2); |
| 1342 |
if (logic_cc) {
|
| 1343 |
gen_logic_CC(tmp); |
| 1344 |
} |
| 1345 |
store_reg_bx(s, UCOP_REG_D, tmp); |
| 1346 |
break;
|
| 1347 |
case 0x0d: |
| 1348 |
if (logic_cc && UCOP_REG_D == 31) { |
| 1349 |
/* MOVS r31, ... is used for exception return. */
|
| 1350 |
if (IS_USER(s)) {
|
| 1351 |
ILLEGAL; |
| 1352 |
} |
| 1353 |
gen_exception_return(s, tmp2); |
| 1354 |
} else {
|
| 1355 |
if (logic_cc) {
|
| 1356 |
gen_logic_CC(tmp2); |
| 1357 |
} |
| 1358 |
store_reg_bx(s, UCOP_REG_D, tmp2); |
| 1359 |
} |
| 1360 |
break;
|
| 1361 |
case 0x0e: |
| 1362 |
tcg_gen_andc_i32(tmp, tmp, tmp2); |
| 1363 |
if (logic_cc) {
|
| 1364 |
gen_logic_CC(tmp); |
| 1365 |
} |
| 1366 |
store_reg_bx(s, UCOP_REG_D, tmp); |
| 1367 |
break;
|
| 1368 |
default:
|
| 1369 |
case 0x0f: |
| 1370 |
tcg_gen_not_i32(tmp2, tmp2); |
| 1371 |
if (logic_cc) {
|
| 1372 |
gen_logic_CC(tmp2); |
| 1373 |
} |
| 1374 |
store_reg_bx(s, UCOP_REG_D, tmp2); |
| 1375 |
break;
|
| 1376 |
} |
| 1377 |
if (UCOP_OPCODES != 0x0f && UCOP_OPCODES != 0x0d) { |
| 1378 |
dead_tmp(tmp2); |
| 1379 |
} |
| 1380 |
} |
| 1381 |
|
| 1382 |
/* multiply */
|
| 1383 |
static void do_mult(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 1384 |
{
|
| 1385 |
TCGv tmp, tmp2, tmp3, tmp4; |
| 1386 |
|
| 1387 |
if (UCOP_SET(27)) { |
| 1388 |
/* 64 bit mul */
|
| 1389 |
tmp = load_reg(s, UCOP_REG_M); |
| 1390 |
tmp2 = load_reg(s, UCOP_REG_N); |
| 1391 |
if (UCOP_SET(26)) { |
| 1392 |
tcg_gen_muls2_i32(tmp, tmp2, tmp, tmp2); |
| 1393 |
} else {
|
| 1394 |
tcg_gen_mulu2_i32(tmp, tmp2, tmp, tmp2); |
| 1395 |
} |
| 1396 |
if (UCOP_SET(25)) { /* mult accumulate */ |
| 1397 |
tmp3 = load_reg(s, UCOP_REG_LO); |
| 1398 |
tmp4 = load_reg(s, UCOP_REG_HI); |
| 1399 |
tcg_gen_add2_i32(tmp, tmp2, tmp, tmp2, tmp3, tmp4); |
| 1400 |
dead_tmp(tmp3); |
| 1401 |
dead_tmp(tmp4); |
| 1402 |
} |
| 1403 |
store_reg(s, UCOP_REG_LO, tmp); |
| 1404 |
store_reg(s, UCOP_REG_HI, tmp2); |
| 1405 |
} else {
|
| 1406 |
/* 32 bit mul */
|
| 1407 |
tmp = load_reg(s, UCOP_REG_M); |
| 1408 |
tmp2 = load_reg(s, UCOP_REG_N); |
| 1409 |
tcg_gen_mul_i32(tmp, tmp, tmp2); |
| 1410 |
dead_tmp(tmp2); |
| 1411 |
if (UCOP_SET(25)) { |
| 1412 |
/* Add */
|
| 1413 |
tmp2 = load_reg(s, UCOP_REG_S); |
| 1414 |
tcg_gen_add_i32(tmp, tmp, tmp2); |
| 1415 |
dead_tmp(tmp2); |
| 1416 |
} |
| 1417 |
if (UCOP_SET_S) {
|
| 1418 |
gen_logic_CC(tmp); |
| 1419 |
} |
| 1420 |
store_reg(s, UCOP_REG_D, tmp); |
| 1421 |
} |
| 1422 |
} |
| 1423 |
|
| 1424 |
/* miscellaneous instructions */
|
| 1425 |
static void do_misc(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 1426 |
{
|
| 1427 |
unsigned int val; |
| 1428 |
TCGv tmp; |
| 1429 |
|
| 1430 |
if ((insn & 0xffffffe0) == 0x10ffc120) { |
| 1431 |
/* Trivial implementation equivalent to bx. */
|
| 1432 |
tmp = load_reg(s, UCOP_REG_M); |
| 1433 |
gen_bx(s, tmp); |
| 1434 |
return;
|
| 1435 |
} |
| 1436 |
|
| 1437 |
if ((insn & 0xfbffc000) == 0x30ffc000) { |
| 1438 |
/* PSR = immediate */
|
| 1439 |
val = UCOP_IMM_9; |
| 1440 |
if (UCOP_SH_IM) {
|
| 1441 |
val = (val >> UCOP_SH_IM) | (val << (32 - UCOP_SH_IM));
|
| 1442 |
} |
| 1443 |
tmp = new_tmp(); |
| 1444 |
tcg_gen_movi_i32(tmp, val); |
| 1445 |
if (gen_set_psr(s, ~ASR_RESERVED, UCOP_SET_B, tmp)) {
|
| 1446 |
ILLEGAL; |
| 1447 |
} |
| 1448 |
return;
|
| 1449 |
} |
| 1450 |
|
| 1451 |
if ((insn & 0xfbffffe0) == 0x12ffc020) { |
| 1452 |
/* PSR.flag = reg */
|
| 1453 |
tmp = load_reg(s, UCOP_REG_M); |
| 1454 |
if (gen_set_psr(s, ASR_NZCV, UCOP_SET_B, tmp)) {
|
| 1455 |
ILLEGAL; |
| 1456 |
} |
| 1457 |
return;
|
| 1458 |
} |
| 1459 |
|
| 1460 |
if ((insn & 0xfbffffe0) == 0x10ffc020) { |
| 1461 |
/* PSR = reg */
|
| 1462 |
tmp = load_reg(s, UCOP_REG_M); |
| 1463 |
if (gen_set_psr(s, ~ASR_RESERVED, UCOP_SET_B, tmp)) {
|
| 1464 |
ILLEGAL; |
| 1465 |
} |
| 1466 |
return;
|
| 1467 |
} |
| 1468 |
|
| 1469 |
if ((insn & 0xfbf83fff) == 0x10f80000) { |
| 1470 |
/* reg = PSR */
|
| 1471 |
if (UCOP_SET_B) {
|
| 1472 |
if (IS_USER(s)) {
|
| 1473 |
ILLEGAL; |
| 1474 |
} |
| 1475 |
tmp = load_cpu_field(bsr); |
| 1476 |
} else {
|
| 1477 |
tmp = new_tmp(); |
| 1478 |
gen_helper_asr_read(tmp, cpu_env); |
| 1479 |
} |
| 1480 |
store_reg(s, UCOP_REG_D, tmp); |
| 1481 |
return;
|
| 1482 |
} |
| 1483 |
|
| 1484 |
if ((insn & 0xfbf83fe0) == 0x12f80120) { |
| 1485 |
/* clz */
|
| 1486 |
tmp = load_reg(s, UCOP_REG_M); |
| 1487 |
if (UCOP_SET(26)) { |
| 1488 |
gen_helper_clo(tmp, tmp); |
| 1489 |
} else {
|
| 1490 |
gen_helper_clz(tmp, tmp); |
| 1491 |
} |
| 1492 |
store_reg(s, UCOP_REG_D, tmp); |
| 1493 |
return;
|
| 1494 |
} |
| 1495 |
|
| 1496 |
/* otherwise */
|
| 1497 |
ILLEGAL; |
| 1498 |
} |
| 1499 |
|
| 1500 |
/* load/store I_offset and R_offset */
|
| 1501 |
static void do_ldst_ir(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 1502 |
{
|
| 1503 |
unsigned int mmu_idx; |
| 1504 |
TCGv tmp; |
| 1505 |
TCGv tmp2; |
| 1506 |
|
| 1507 |
tmp2 = load_reg(s, UCOP_REG_N); |
| 1508 |
mmu_idx = (IS_USER(s) || (!UCOP_SET_P && UCOP_SET_W)); |
| 1509 |
|
| 1510 |
/* immediate */
|
| 1511 |
if (UCOP_SET_P) {
|
| 1512 |
gen_add_data_offset(s, insn, tmp2); |
| 1513 |
} |
| 1514 |
|
| 1515 |
if (UCOP_SET_L) {
|
| 1516 |
/* load */
|
| 1517 |
if (UCOP_SET_B) {
|
| 1518 |
tmp = gen_ld8u(tmp2, mmu_idx); |
| 1519 |
} else {
|
| 1520 |
tmp = gen_ld32(tmp2, mmu_idx); |
| 1521 |
} |
| 1522 |
} else {
|
| 1523 |
/* store */
|
| 1524 |
tmp = load_reg(s, UCOP_REG_D); |
| 1525 |
if (UCOP_SET_B) {
|
| 1526 |
gen_st8(tmp, tmp2, mmu_idx); |
| 1527 |
} else {
|
| 1528 |
gen_st32(tmp, tmp2, mmu_idx); |
| 1529 |
} |
| 1530 |
} |
| 1531 |
if (!UCOP_SET_P) {
|
| 1532 |
gen_add_data_offset(s, insn, tmp2); |
| 1533 |
store_reg(s, UCOP_REG_N, tmp2); |
| 1534 |
} else if (UCOP_SET_W) { |
| 1535 |
store_reg(s, UCOP_REG_N, tmp2); |
| 1536 |
} else {
|
| 1537 |
dead_tmp(tmp2); |
| 1538 |
} |
| 1539 |
if (UCOP_SET_L) {
|
| 1540 |
/* Complete the load. */
|
| 1541 |
if (UCOP_REG_D == 31) { |
| 1542 |
gen_bx(s, tmp); |
| 1543 |
} else {
|
| 1544 |
store_reg(s, UCOP_REG_D, tmp); |
| 1545 |
} |
| 1546 |
} |
| 1547 |
} |
| 1548 |
|
| 1549 |
/* SWP instruction */
|
| 1550 |
static void do_swap(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 1551 |
{
|
| 1552 |
TCGv addr; |
| 1553 |
TCGv tmp; |
| 1554 |
TCGv tmp2; |
| 1555 |
|
| 1556 |
if ((insn & 0xff003fe0) != 0x40000120) { |
| 1557 |
ILLEGAL; |
| 1558 |
} |
| 1559 |
|
| 1560 |
/* ??? This is not really atomic. However we know
|
| 1561 |
we never have multiple CPUs running in parallel,
|
| 1562 |
so it is good enough. */
|
| 1563 |
addr = load_reg(s, UCOP_REG_N); |
| 1564 |
tmp = load_reg(s, UCOP_REG_M); |
| 1565 |
if (UCOP_SET_B) {
|
| 1566 |
tmp2 = gen_ld8u(addr, IS_USER(s)); |
| 1567 |
gen_st8(tmp, addr, IS_USER(s)); |
| 1568 |
} else {
|
| 1569 |
tmp2 = gen_ld32(addr, IS_USER(s)); |
| 1570 |
gen_st32(tmp, addr, IS_USER(s)); |
| 1571 |
} |
| 1572 |
dead_tmp(addr); |
| 1573 |
store_reg(s, UCOP_REG_D, tmp2); |
| 1574 |
} |
| 1575 |
|
| 1576 |
/* load/store hw/sb */
|
| 1577 |
static void do_ldst_hwsb(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 1578 |
{
|
| 1579 |
TCGv addr; |
| 1580 |
TCGv tmp; |
| 1581 |
|
| 1582 |
if (UCOP_SH_OP == 0) { |
| 1583 |
do_swap(env, s, insn); |
| 1584 |
return;
|
| 1585 |
} |
| 1586 |
|
| 1587 |
addr = load_reg(s, UCOP_REG_N); |
| 1588 |
if (UCOP_SET_P) {
|
| 1589 |
gen_add_datah_offset(s, insn, addr); |
| 1590 |
} |
| 1591 |
|
| 1592 |
if (UCOP_SET_L) { /* load */ |
| 1593 |
switch (UCOP_SH_OP) {
|
| 1594 |
case 1: |
| 1595 |
tmp = gen_ld16u(addr, IS_USER(s)); |
| 1596 |
break;
|
| 1597 |
case 2: |
| 1598 |
tmp = gen_ld8s(addr, IS_USER(s)); |
| 1599 |
break;
|
| 1600 |
default: /* see do_swap */ |
| 1601 |
case 3: |
| 1602 |
tmp = gen_ld16s(addr, IS_USER(s)); |
| 1603 |
break;
|
| 1604 |
} |
| 1605 |
} else { /* store */ |
| 1606 |
if (UCOP_SH_OP != 1) { |
| 1607 |
ILLEGAL; |
| 1608 |
} |
| 1609 |
tmp = load_reg(s, UCOP_REG_D); |
| 1610 |
gen_st16(tmp, addr, IS_USER(s)); |
| 1611 |
} |
| 1612 |
/* Perform base writeback before the loaded value to
|
| 1613 |
ensure correct behavior with overlapping index registers. */
|
| 1614 |
if (!UCOP_SET_P) {
|
| 1615 |
gen_add_datah_offset(s, insn, addr); |
| 1616 |
store_reg(s, UCOP_REG_N, addr); |
| 1617 |
} else if (UCOP_SET_W) { |
| 1618 |
store_reg(s, UCOP_REG_N, addr); |
| 1619 |
} else {
|
| 1620 |
dead_tmp(addr); |
| 1621 |
} |
| 1622 |
if (UCOP_SET_L) {
|
| 1623 |
/* Complete the load. */
|
| 1624 |
store_reg(s, UCOP_REG_D, tmp); |
| 1625 |
} |
| 1626 |
} |
| 1627 |
|
| 1628 |
/* load/store multiple words */
|
| 1629 |
static void do_ldst_m(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 1630 |
{
|
| 1631 |
unsigned int val, i, mmu_idx; |
| 1632 |
int j, n, reg, user, loaded_base;
|
| 1633 |
TCGv tmp; |
| 1634 |
TCGv tmp2; |
| 1635 |
TCGv addr; |
| 1636 |
TCGv loaded_var; |
| 1637 |
|
| 1638 |
if (UCOP_SET(7)) { |
| 1639 |
ILLEGAL; |
| 1640 |
} |
| 1641 |
/* XXX: store correct base if write back */
|
| 1642 |
user = 0;
|
| 1643 |
if (UCOP_SET_B) { /* S bit in instruction table */ |
| 1644 |
if (IS_USER(s)) {
|
| 1645 |
ILLEGAL; /* only usable in supervisor mode */
|
| 1646 |
} |
| 1647 |
if (UCOP_SET(18) == 0) { /* pc reg */ |
| 1648 |
user = 1;
|
| 1649 |
} |
| 1650 |
} |
| 1651 |
|
| 1652 |
mmu_idx = (IS_USER(s) || (!UCOP_SET_P && UCOP_SET_W)); |
| 1653 |
addr = load_reg(s, UCOP_REG_N); |
| 1654 |
|
| 1655 |
/* compute total size */
|
| 1656 |
loaded_base = 0;
|
| 1657 |
TCGV_UNUSED(loaded_var); |
| 1658 |
n = 0;
|
| 1659 |
for (i = 0; i < 6; i++) { |
| 1660 |
if (UCOP_SET(i)) {
|
| 1661 |
n++; |
| 1662 |
} |
| 1663 |
} |
| 1664 |
for (i = 9; i < 19; i++) { |
| 1665 |
if (UCOP_SET(i)) {
|
| 1666 |
n++; |
| 1667 |
} |
| 1668 |
} |
| 1669 |
/* XXX: test invalid n == 0 case ? */
|
| 1670 |
if (UCOP_SET_U) {
|
| 1671 |
if (UCOP_SET_P) {
|
| 1672 |
/* pre increment */
|
| 1673 |
tcg_gen_addi_i32(addr, addr, 4);
|
| 1674 |
} else {
|
| 1675 |
/* post increment */
|
| 1676 |
} |
| 1677 |
} else {
|
| 1678 |
if (UCOP_SET_P) {
|
| 1679 |
/* pre decrement */
|
| 1680 |
tcg_gen_addi_i32(addr, addr, -(n * 4));
|
| 1681 |
} else {
|
| 1682 |
/* post decrement */
|
| 1683 |
if (n != 1) { |
| 1684 |
tcg_gen_addi_i32(addr, addr, -((n - 1) * 4)); |
| 1685 |
} |
| 1686 |
} |
| 1687 |
} |
| 1688 |
|
| 1689 |
j = 0;
|
| 1690 |
reg = UCOP_SET(6) ? 16 : 0; |
| 1691 |
for (i = 0; i < 19; i++, reg++) { |
| 1692 |
if (i == 6) { |
| 1693 |
i = i + 3;
|
| 1694 |
} |
| 1695 |
if (UCOP_SET(i)) {
|
| 1696 |
if (UCOP_SET_L) { /* load */ |
| 1697 |
tmp = gen_ld32(addr, mmu_idx); |
| 1698 |
if (reg == 31) { |
| 1699 |
gen_bx(s, tmp); |
| 1700 |
} else if (user) { |
| 1701 |
tmp2 = tcg_const_i32(reg); |
| 1702 |
gen_helper_set_user_reg(cpu_env, tmp2, tmp); |
| 1703 |
tcg_temp_free_i32(tmp2); |
| 1704 |
dead_tmp(tmp); |
| 1705 |
} else if (reg == UCOP_REG_N) { |
| 1706 |
loaded_var = tmp; |
| 1707 |
loaded_base = 1;
|
| 1708 |
} else {
|
| 1709 |
store_reg(s, reg, tmp); |
| 1710 |
} |
| 1711 |
} else { /* store */ |
| 1712 |
if (reg == 31) { |
| 1713 |
/* special case: r31 = PC + 4 */
|
| 1714 |
val = (long)s->pc;
|
| 1715 |
tmp = new_tmp(); |
| 1716 |
tcg_gen_movi_i32(tmp, val); |
| 1717 |
} else if (user) { |
| 1718 |
tmp = new_tmp(); |
| 1719 |
tmp2 = tcg_const_i32(reg); |
| 1720 |
gen_helper_get_user_reg(tmp, cpu_env, tmp2); |
| 1721 |
tcg_temp_free_i32(tmp2); |
| 1722 |
} else {
|
| 1723 |
tmp = load_reg(s, reg); |
| 1724 |
} |
| 1725 |
gen_st32(tmp, addr, mmu_idx); |
| 1726 |
} |
| 1727 |
j++; |
| 1728 |
/* no need to add after the last transfer */
|
| 1729 |
if (j != n) {
|
| 1730 |
tcg_gen_addi_i32(addr, addr, 4);
|
| 1731 |
} |
| 1732 |
} |
| 1733 |
} |
| 1734 |
if (UCOP_SET_W) { /* write back */ |
| 1735 |
if (UCOP_SET_U) {
|
| 1736 |
if (UCOP_SET_P) {
|
| 1737 |
/* pre increment */
|
| 1738 |
} else {
|
| 1739 |
/* post increment */
|
| 1740 |
tcg_gen_addi_i32(addr, addr, 4);
|
| 1741 |
} |
| 1742 |
} else {
|
| 1743 |
if (UCOP_SET_P) {
|
| 1744 |
/* pre decrement */
|
| 1745 |
if (n != 1) { |
| 1746 |
tcg_gen_addi_i32(addr, addr, -((n - 1) * 4)); |
| 1747 |
} |
| 1748 |
} else {
|
| 1749 |
/* post decrement */
|
| 1750 |
tcg_gen_addi_i32(addr, addr, -(n * 4));
|
| 1751 |
} |
| 1752 |
} |
| 1753 |
store_reg(s, UCOP_REG_N, addr); |
| 1754 |
} else {
|
| 1755 |
dead_tmp(addr); |
| 1756 |
} |
| 1757 |
if (loaded_base) {
|
| 1758 |
store_reg(s, UCOP_REG_N, loaded_var); |
| 1759 |
} |
| 1760 |
if (UCOP_SET_B && !user) {
|
| 1761 |
/* Restore ASR from BSR. */
|
| 1762 |
tmp = load_cpu_field(bsr); |
| 1763 |
gen_set_asr(tmp, 0xffffffff);
|
| 1764 |
dead_tmp(tmp); |
| 1765 |
s->is_jmp = DISAS_UPDATE; |
| 1766 |
} |
| 1767 |
} |
| 1768 |
|
| 1769 |
/* branch (and link) */
|
| 1770 |
static void do_branch(CPUUniCore32State *env, DisasContext *s, uint32_t insn) |
| 1771 |
{
|
| 1772 |
unsigned int val; |
| 1773 |
int32_t offset; |
| 1774 |
TCGv tmp; |
| 1775 |
|
| 1776 |
if (UCOP_COND == 0xf) { |
| 1777 |
ILLEGAL; |
| 1778 |
} |
| 1779 |
|
| 1780 |
if (UCOP_COND != 0xe) { |
| 1781 |
/* if not always execute, we generate a conditional jump to
|
| 1782 |
next instruction */
|
| 1783 |
s->condlabel = gen_new_label(); |
| 1784 |
gen_test_cc(UCOP_COND ^ 1, s->condlabel);
|
| 1785 |
s->condjmp = 1;
|
| 1786 |
} |
| 1787 |
|
| 1788 |
val = (int32_t)s->pc; |
| 1789 |
if (UCOP_SET_L) {
|
| 1790 |
tmp = new_tmp(); |
| 1791 |
tcg_gen_movi_i32(tmp, val); |
| 1792 |
store_reg(s, 30, tmp);
|
| 1793 |
} |
| 1794 |
offset = (((int32_t)insn << 8) >> 8); |
| 1795 |
val += (offset << 2); /* unicore is pc+4 */ |
| 1796 |
gen_jmp(s, val); |
| 1797 |
} |
| 1798 |
|
| 1799 |
static void disas_uc32_insn(CPUUniCore32State *env, DisasContext *s) |
| 1800 |
{
|
| 1801 |
unsigned int insn; |
| 1802 |
|
| 1803 |
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
|
| 1804 |
tcg_gen_debug_insn_start(s->pc); |
| 1805 |
} |
| 1806 |
|
| 1807 |
insn = cpu_ldl_code(env, s->pc); |
| 1808 |
s->pc += 4;
|
| 1809 |
|
| 1810 |
/* UniCore instructions class:
|
| 1811 |
* AAAB BBBC xxxx xxxx xxxx xxxD xxEx xxxx
|
| 1812 |
* AAA : see switch case
|
| 1813 |
* BBBB : opcodes or cond or PUBW
|
| 1814 |
* C : S OR L
|
| 1815 |
* D : 8
|
| 1816 |
* E : 5
|
| 1817 |
*/
|
| 1818 |
switch (insn >> 29) { |
| 1819 |
case 0x0: |
| 1820 |
if (UCOP_SET(5) && UCOP_SET(8) && !UCOP_SET(28)) { |
| 1821 |
do_mult(env, s, insn); |
| 1822 |
break;
|
| 1823 |
} |
| 1824 |
|
| 1825 |
if (UCOP_SET(8)) { |
| 1826 |
do_misc(env, s, insn); |
| 1827 |
break;
|
| 1828 |
} |
| 1829 |
case 0x1: |
| 1830 |
if (((UCOP_OPCODES >> 2) == 2) && !UCOP_SET_S) { |
| 1831 |
do_misc(env, s, insn); |
| 1832 |
break;
|
| 1833 |
} |
| 1834 |
do_datap(env, s, insn); |
| 1835 |
break;
|
| 1836 |
|
| 1837 |
case 0x2: |
| 1838 |
if (UCOP_SET(8) && UCOP_SET(5)) { |
| 1839 |
do_ldst_hwsb(env, s, insn); |
| 1840 |
break;
|
| 1841 |
} |
| 1842 |
if (UCOP_SET(8) || UCOP_SET(5)) { |
| 1843 |
ILLEGAL; |
| 1844 |
} |
| 1845 |
case 0x3: |
| 1846 |
do_ldst_ir(env, s, insn); |
| 1847 |
break;
|
| 1848 |
|
| 1849 |
case 0x4: |
| 1850 |
if (UCOP_SET(8)) { |
| 1851 |
ILLEGAL; /* extended instructions */
|
| 1852 |
} |
| 1853 |
do_ldst_m(env, s, insn); |
| 1854 |
break;
|
| 1855 |
case 0x5: |
| 1856 |
do_branch(env, s, insn); |
| 1857 |
break;
|
| 1858 |
case 0x6: |
| 1859 |
/* Coprocessor. */
|
| 1860 |
disas_coproc_insn(env, s, insn); |
| 1861 |
break;
|
| 1862 |
case 0x7: |
| 1863 |
if (!UCOP_SET(28)) { |
| 1864 |
disas_coproc_insn(env, s, insn); |
| 1865 |
break;
|
| 1866 |
} |
| 1867 |
if ((insn & 0xff000000) == 0xff000000) { /* syscall */ |
| 1868 |
gen_set_pc_im(s->pc); |
| 1869 |
s->is_jmp = DISAS_SYSCALL; |
| 1870 |
break;
|
| 1871 |
} |
| 1872 |
ILLEGAL; |
| 1873 |
} |
| 1874 |
} |
| 1875 |
|
| 1876 |
/* generate intermediate code in gen_opc_buf and gen_opparam_buf for
|
| 1877 |
basic block 'tb'. If search_pc is TRUE, also generate PC
|
| 1878 |
information for each intermediate instruction. */
|
| 1879 |
static inline void gen_intermediate_code_internal(UniCore32CPU *cpu, |
| 1880 |
TranslationBlock *tb, bool search_pc)
|
| 1881 |
{
|
| 1882 |
CPUState *cs = CPU(cpu); |
| 1883 |
CPUUniCore32State *env = &cpu->env; |
| 1884 |
DisasContext dc1, *dc = &dc1; |
| 1885 |
CPUBreakpoint *bp; |
| 1886 |
uint16_t *gen_opc_end; |
| 1887 |
int j, lj;
|
| 1888 |
target_ulong pc_start; |
| 1889 |
uint32_t next_page_start; |
| 1890 |
int num_insns;
|
| 1891 |
int max_insns;
|
| 1892 |
|
| 1893 |
/* generate intermediate code */
|
| 1894 |
num_temps = 0;
|
| 1895 |
|
| 1896 |
pc_start = tb->pc; |
| 1897 |
|
| 1898 |
dc->tb = tb; |
| 1899 |
|
| 1900 |
gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE; |
| 1901 |
|
| 1902 |
dc->is_jmp = DISAS_NEXT; |
| 1903 |
dc->pc = pc_start; |
| 1904 |
dc->singlestep_enabled = cs->singlestep_enabled; |
| 1905 |
dc->condjmp = 0;
|
| 1906 |
cpu_F0s = tcg_temp_new_i32(); |
| 1907 |
cpu_F1s = tcg_temp_new_i32(); |
| 1908 |
cpu_F0d = tcg_temp_new_i64(); |
| 1909 |
cpu_F1d = tcg_temp_new_i64(); |
| 1910 |
next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; |
| 1911 |
lj = -1;
|
| 1912 |
num_insns = 0;
|
| 1913 |
max_insns = tb->cflags & CF_COUNT_MASK; |
| 1914 |
if (max_insns == 0) { |
| 1915 |
max_insns = CF_COUNT_MASK; |
| 1916 |
} |
| 1917 |
|
| 1918 |
#ifndef CONFIG_USER_ONLY
|
| 1919 |
if ((env->uncached_asr & ASR_M) == ASR_MODE_USER) {
|
| 1920 |
dc->user = 1;
|
| 1921 |
} else {
|
| 1922 |
dc->user = 0;
|
| 1923 |
} |
| 1924 |
#endif
|
| 1925 |
|
| 1926 |
gen_tb_start(); |
| 1927 |
do {
|
| 1928 |
if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
|
| 1929 |
QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
|
| 1930 |
if (bp->pc == dc->pc) {
|
| 1931 |
gen_set_pc_im(dc->pc); |
| 1932 |
gen_exception(EXCP_DEBUG); |
| 1933 |
dc->is_jmp = DISAS_JUMP; |
| 1934 |
/* Advance PC so that clearing the breakpoint will
|
| 1935 |
invalidate this TB. */
|
| 1936 |
dc->pc += 2; /* FIXME */ |
| 1937 |
goto done_generating;
|
| 1938 |
} |
| 1939 |
} |
| 1940 |
} |
| 1941 |
if (search_pc) {
|
| 1942 |
j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf; |
| 1943 |
if (lj < j) {
|
| 1944 |
lj++; |
| 1945 |
while (lj < j) {
|
| 1946 |
tcg_ctx.gen_opc_instr_start[lj++] = 0;
|
| 1947 |
} |
| 1948 |
} |
| 1949 |
tcg_ctx.gen_opc_pc[lj] = dc->pc; |
| 1950 |
tcg_ctx.gen_opc_instr_start[lj] = 1;
|
| 1951 |
tcg_ctx.gen_opc_icount[lj] = num_insns; |
| 1952 |
} |
| 1953 |
|
| 1954 |
if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) { |
| 1955 |
gen_io_start(); |
| 1956 |
} |
| 1957 |
|
| 1958 |
disas_uc32_insn(env, dc); |
| 1959 |
|
| 1960 |
if (num_temps) {
|
| 1961 |
fprintf(stderr, "Internal resource leak before %08x\n", dc->pc);
|
| 1962 |
num_temps = 0;
|
| 1963 |
} |
| 1964 |
|
| 1965 |
if (dc->condjmp && !dc->is_jmp) {
|
| 1966 |
gen_set_label(dc->condlabel); |
| 1967 |
dc->condjmp = 0;
|
| 1968 |
} |
| 1969 |
/* Translation stops when a conditional branch is encountered.
|
| 1970 |
* Otherwise the subsequent code could get translated several times.
|
| 1971 |
* Also stop translation when a page boundary is reached. This
|
| 1972 |
* ensures prefetch aborts occur at the right place. */
|
| 1973 |
num_insns++; |
| 1974 |
} while (!dc->is_jmp && tcg_ctx.gen_opc_ptr < gen_opc_end &&
|
| 1975 |
!cs->singlestep_enabled && |
| 1976 |
!singlestep && |
| 1977 |
dc->pc < next_page_start && |
| 1978 |
num_insns < max_insns); |
| 1979 |
|
| 1980 |
if (tb->cflags & CF_LAST_IO) {
|
| 1981 |
if (dc->condjmp) {
|
| 1982 |
/* FIXME: This can theoretically happen with self-modifying
|
| 1983 |
code. */
|
| 1984 |
cpu_abort(env, "IO on conditional branch instruction");
|
| 1985 |
} |
| 1986 |
gen_io_end(); |
| 1987 |
} |
| 1988 |
|
| 1989 |
/* At this stage dc->condjmp will only be set when the skipped
|
| 1990 |
instruction was a conditional branch or trap, and the PC has
|
| 1991 |
already been written. */
|
| 1992 |
if (unlikely(cs->singlestep_enabled)) {
|
| 1993 |
/* Make sure the pc is updated, and raise a debug exception. */
|
| 1994 |
if (dc->condjmp) {
|
| 1995 |
if (dc->is_jmp == DISAS_SYSCALL) {
|
| 1996 |
gen_exception(UC32_EXCP_PRIV); |
| 1997 |
} else {
|
| 1998 |
gen_exception(EXCP_DEBUG); |
| 1999 |
} |
| 2000 |
gen_set_label(dc->condlabel); |
| 2001 |
} |
| 2002 |
if (dc->condjmp || !dc->is_jmp) {
|
| 2003 |
gen_set_pc_im(dc->pc); |
| 2004 |
dc->condjmp = 0;
|
| 2005 |
} |
| 2006 |
if (dc->is_jmp == DISAS_SYSCALL && !dc->condjmp) {
|
| 2007 |
gen_exception(UC32_EXCP_PRIV); |
| 2008 |
} else {
|
| 2009 |
gen_exception(EXCP_DEBUG); |
| 2010 |
} |
| 2011 |
} else {
|
| 2012 |
/* While branches must always occur at the end of an IT block,
|
| 2013 |
there are a few other things that can cause us to terminate
|
| 2014 |
the TB in the middel of an IT block:
|
| 2015 |
- Exception generating instructions (bkpt, swi, undefined).
|
| 2016 |
- Page boundaries.
|
| 2017 |
- Hardware watchpoints.
|
| 2018 |
Hardware breakpoints have already been handled and skip this code.
|
| 2019 |
*/
|
| 2020 |
switch (dc->is_jmp) {
|
| 2021 |
case DISAS_NEXT:
|
| 2022 |
gen_goto_tb(dc, 1, dc->pc);
|
| 2023 |
break;
|
| 2024 |
default:
|
| 2025 |
case DISAS_JUMP:
|
| 2026 |
case DISAS_UPDATE:
|
| 2027 |
/* indicate that the hash table must be used to find the next TB */
|
| 2028 |
tcg_gen_exit_tb(0);
|
| 2029 |
break;
|
| 2030 |
case DISAS_TB_JUMP:
|
| 2031 |
/* nothing more to generate */
|
| 2032 |
break;
|
| 2033 |
case DISAS_SYSCALL:
|
| 2034 |
gen_exception(UC32_EXCP_PRIV); |
| 2035 |
break;
|
| 2036 |
} |
| 2037 |
if (dc->condjmp) {
|
| 2038 |
gen_set_label(dc->condlabel); |
| 2039 |
gen_goto_tb(dc, 1, dc->pc);
|
| 2040 |
dc->condjmp = 0;
|
| 2041 |
} |
| 2042 |
} |
| 2043 |
|
| 2044 |
done_generating:
|
| 2045 |
gen_tb_end(tb, num_insns); |
| 2046 |
*tcg_ctx.gen_opc_ptr = INDEX_op_end; |
| 2047 |
|
| 2048 |
#ifdef DEBUG_DISAS
|
| 2049 |
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
|
| 2050 |
qemu_log("----------------\n");
|
| 2051 |
qemu_log("IN: %s\n", lookup_symbol(pc_start));
|
| 2052 |
log_target_disas(env, pc_start, dc->pc - pc_start, 0);
|
| 2053 |
qemu_log("\n");
|
| 2054 |
} |
| 2055 |
#endif
|
| 2056 |
if (search_pc) {
|
| 2057 |
j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf; |
| 2058 |
lj++; |
| 2059 |
while (lj <= j) {
|
| 2060 |
tcg_ctx.gen_opc_instr_start[lj++] = 0;
|
| 2061 |
} |
| 2062 |
} else {
|
| 2063 |
tb->size = dc->pc - pc_start; |
| 2064 |
tb->icount = num_insns; |
| 2065 |
} |
| 2066 |
} |
| 2067 |
|
| 2068 |
void gen_intermediate_code(CPUUniCore32State *env, TranslationBlock *tb)
|
| 2069 |
{
|
| 2070 |
gen_intermediate_code_internal(uc32_env_get_cpu(env), tb, false);
|
| 2071 |
} |
| 2072 |
|
| 2073 |
void gen_intermediate_code_pc(CPUUniCore32State *env, TranslationBlock *tb)
|
| 2074 |
{
|
| 2075 |
gen_intermediate_code_internal(uc32_env_get_cpu(env), tb, true);
|
| 2076 |
} |
| 2077 |
|
| 2078 |
static const char *cpu_mode_names[16] = { |
| 2079 |
"USER", "REAL", "INTR", "PRIV", "UM14", "UM15", "UM16", "TRAP", |
| 2080 |
"UM18", "UM19", "UM1A", "EXTN", "UM1C", "UM1D", "UM1E", "SUSR" |
| 2081 |
}; |
| 2082 |
|
| 2083 |
#undef UCF64_DUMP_STATE
|
| 2084 |
#ifdef UCF64_DUMP_STATE
|
| 2085 |
static void cpu_dump_state_ucf64(CPUUniCore32State *env, FILE *f, |
| 2086 |
fprintf_function cpu_fprintf, int flags)
|
| 2087 |
{
|
| 2088 |
int i;
|
| 2089 |
union {
|
| 2090 |
uint32_t i; |
| 2091 |
float s;
|
| 2092 |
} s0, s1; |
| 2093 |
CPU_DoubleU d; |
| 2094 |
/* ??? This assumes float64 and double have the same layout.
|
| 2095 |
Oh well, it's only debug dumps. */
|
| 2096 |
union {
|
| 2097 |
float64 f64; |
| 2098 |
double d;
|
| 2099 |
} d0; |
| 2100 |
|
| 2101 |
for (i = 0; i < 16; i++) { |
| 2102 |
d.d = env->ucf64.regs[i]; |
| 2103 |
s0.i = d.l.lower; |
| 2104 |
s1.i = d.l.upper; |
| 2105 |
d0.f64 = d.d; |
| 2106 |
cpu_fprintf(f, "s%02d=%08x(%8g) s%02d=%08x(%8g)",
|
| 2107 |
i * 2, (int)s0.i, s0.s, |
| 2108 |
i * 2 + 1, (int)s1.i, s1.s); |
| 2109 |
cpu_fprintf(f, " d%02d=%" PRIx64 "(%8g)\n", |
| 2110 |
i, (uint64_t)d0.f64, d0.d); |
| 2111 |
} |
| 2112 |
cpu_fprintf(f, "FPSCR: %08x\n", (int)env->ucf64.xregs[UC32_UCF64_FPSCR]); |
| 2113 |
} |
| 2114 |
#else
|
| 2115 |
#define cpu_dump_state_ucf64(env, file, pr, flags) do { } while (0) |
| 2116 |
#endif
|
| 2117 |
|
| 2118 |
void uc32_cpu_dump_state(CPUState *cs, FILE *f,
|
| 2119 |
fprintf_function cpu_fprintf, int flags)
|
| 2120 |
{
|
| 2121 |
UniCore32CPU *cpu = UNICORE32_CPU(cs); |
| 2122 |
CPUUniCore32State *env = &cpu->env; |
| 2123 |
int i;
|
| 2124 |
uint32_t psr; |
| 2125 |
|
| 2126 |
for (i = 0; i < 32; i++) { |
| 2127 |
cpu_fprintf(f, "R%02d=%08x", i, env->regs[i]);
|
| 2128 |
if ((i % 4) == 3) { |
| 2129 |
cpu_fprintf(f, "\n");
|
| 2130 |
} else {
|
| 2131 |
cpu_fprintf(f, " ");
|
| 2132 |
} |
| 2133 |
} |
| 2134 |
psr = cpu_asr_read(env); |
| 2135 |
cpu_fprintf(f, "PSR=%08x %c%c%c%c %s\n",
|
| 2136 |
psr, |
| 2137 |
psr & (1 << 31) ? 'N' : '-', |
| 2138 |
psr & (1 << 30) ? 'Z' : '-', |
| 2139 |
psr & (1 << 29) ? 'C' : '-', |
| 2140 |
psr & (1 << 28) ? 'V' : '-', |
| 2141 |
cpu_mode_names[psr & 0xf]);
|
| 2142 |
|
| 2143 |
cpu_dump_state_ucf64(env, f, cpu_fprintf, flags); |
| 2144 |
} |
| 2145 |
|
| 2146 |
void restore_state_to_opc(CPUUniCore32State *env, TranslationBlock *tb, int pc_pos) |
| 2147 |
{
|
| 2148 |
env->regs[31] = tcg_ctx.gen_opc_pc[pc_pos];
|
| 2149 |
} |