6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
28 #include "translate.h"
29 #include "qemu/host-utils.h"
31 #include "exec/gen-icount.h"
37 static TCGv_i64 cpu_X[32];
38 static TCGv_i64 cpu_pc;
39 static TCGv_i32 cpu_NF, cpu_ZF, cpu_CF, cpu_VF;
41 /* Load/store exclusive handling */
42 static TCGv_i64 cpu_exclusive_addr;
43 static TCGv_i64 cpu_exclusive_val;
44 static TCGv_i64 cpu_exclusive_high;
45 #ifdef CONFIG_USER_ONLY
46 static TCGv_i64 cpu_exclusive_test;
47 static TCGv_i32 cpu_exclusive_info;
50 static const char *regnames[] = {
51 "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",
52 "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15",
53 "x16", "x17", "x18", "x19", "x20", "x21", "x22", "x23",
54 "x24", "x25", "x26", "x27", "x28", "x29", "lr", "sp"
58 A64_SHIFT_TYPE_LSL = 0,
59 A64_SHIFT_TYPE_LSR = 1,
60 A64_SHIFT_TYPE_ASR = 2,
61 A64_SHIFT_TYPE_ROR = 3
64 /* initialize TCG globals. */
65 void a64_translate_init(void)
69 cpu_pc = tcg_global_mem_new_i64(TCG_AREG0,
70 offsetof(CPUARMState, pc),
72 for (i = 0; i < 32; i++) {
73 cpu_X[i] = tcg_global_mem_new_i64(TCG_AREG0,
74 offsetof(CPUARMState, xregs[i]),
78 cpu_NF = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUARMState, NF), "NF");
79 cpu_ZF = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUARMState, ZF), "ZF");
80 cpu_CF = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUARMState, CF), "CF");
81 cpu_VF = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUARMState, VF), "VF");
83 cpu_exclusive_addr = tcg_global_mem_new_i64(TCG_AREG0,
84 offsetof(CPUARMState, exclusive_addr), "exclusive_addr");
85 cpu_exclusive_val = tcg_global_mem_new_i64(TCG_AREG0,
86 offsetof(CPUARMState, exclusive_val), "exclusive_val");
87 cpu_exclusive_high = tcg_global_mem_new_i64(TCG_AREG0,
88 offsetof(CPUARMState, exclusive_high), "exclusive_high");
89 #ifdef CONFIG_USER_ONLY
90 cpu_exclusive_test = tcg_global_mem_new_i64(TCG_AREG0,
91 offsetof(CPUARMState, exclusive_test), "exclusive_test");
92 cpu_exclusive_info = tcg_global_mem_new_i32(TCG_AREG0,
93 offsetof(CPUARMState, exclusive_info), "exclusive_info");
97 void aarch64_cpu_dump_state(CPUState *cs, FILE *f,
98 fprintf_function cpu_fprintf, int flags)
100 ARMCPU *cpu = ARM_CPU(cs);
101 CPUARMState *env = &cpu->env;
102 uint32_t psr = pstate_read(env);
105 cpu_fprintf(f, "PC=%016"PRIx64" SP=%016"PRIx64"\n",
106 env->pc, env->xregs[31]);
107 for (i = 0; i < 31; i++) {
108 cpu_fprintf(f, "X%02d=%016"PRIx64, i, env->xregs[i]);
110 cpu_fprintf(f, "\n");
115 cpu_fprintf(f, "PSTATE=%08x (flags %c%c%c%c)\n",
117 psr & PSTATE_N ? 'N' : '-',
118 psr & PSTATE_Z ? 'Z' : '-',
119 psr & PSTATE_C ? 'C' : '-',
120 psr & PSTATE_V ? 'V' : '-');
121 cpu_fprintf(f, "\n");
123 if (flags & CPU_DUMP_FPU) {
125 for (i = 0; i < numvfpregs; i += 2) {
126 uint64_t vlo = float64_val(env->vfp.regs[i * 2]);
127 uint64_t vhi = float64_val(env->vfp.regs[(i * 2) + 1]);
128 cpu_fprintf(f, "q%02d=%016" PRIx64 ":%016" PRIx64 " ",
130 vlo = float64_val(env->vfp.regs[(i + 1) * 2]);
131 vhi = float64_val(env->vfp.regs[((i + 1) * 2) + 1]);
132 cpu_fprintf(f, "q%02d=%016" PRIx64 ":%016" PRIx64 "\n",
135 cpu_fprintf(f, "FPCR: %08x FPSR: %08x\n",
136 vfp_get_fpcr(env), vfp_get_fpsr(env));
140 static int get_mem_index(DisasContext *s)
142 #ifdef CONFIG_USER_ONLY
149 void gen_a64_set_pc_im(uint64_t val)
151 tcg_gen_movi_i64(cpu_pc, val);
154 static void gen_exception(int excp)
156 TCGv_i32 tmp = tcg_temp_new_i32();
157 tcg_gen_movi_i32(tmp, excp);
158 gen_helper_exception(cpu_env, tmp);
159 tcg_temp_free_i32(tmp);
162 static void gen_exception_insn(DisasContext *s, int offset, int excp)
164 gen_a64_set_pc_im(s->pc - offset);
166 s->is_jmp = DISAS_EXC;
169 static inline bool use_goto_tb(DisasContext *s, int n, uint64_t dest)
171 /* No direct tb linking with singlestep or deterministic io */
172 if (s->singlestep_enabled || (s->tb->cflags & CF_LAST_IO)) {
176 /* Only link tbs from inside the same guest page */
177 if ((s->tb->pc & TARGET_PAGE_MASK) != (dest & TARGET_PAGE_MASK)) {
184 static inline void gen_goto_tb(DisasContext *s, int n, uint64_t dest)
186 TranslationBlock *tb;
189 if (use_goto_tb(s, n, dest)) {
191 gen_a64_set_pc_im(dest);
192 tcg_gen_exit_tb((tcg_target_long)tb + n);
193 s->is_jmp = DISAS_TB_JUMP;
195 gen_a64_set_pc_im(dest);
196 if (s->singlestep_enabled) {
197 gen_exception(EXCP_DEBUG);
200 s->is_jmp = DISAS_JUMP;
204 static void unallocated_encoding(DisasContext *s)
206 gen_exception_insn(s, 4, EXCP_UDEF);
209 #define unsupported_encoding(s, insn) \
211 qemu_log_mask(LOG_UNIMP, \
212 "%s:%d: unsupported instruction encoding 0x%08x " \
213 "at pc=%016" PRIx64 "\n", \
214 __FILE__, __LINE__, insn, s->pc - 4); \
215 unallocated_encoding(s); \
218 static void init_tmp_a64_array(DisasContext *s)
220 #ifdef CONFIG_DEBUG_TCG
222 for (i = 0; i < ARRAY_SIZE(s->tmp_a64); i++) {
223 TCGV_UNUSED_I64(s->tmp_a64[i]);
226 s->tmp_a64_count = 0;
229 static void free_tmp_a64(DisasContext *s)
232 for (i = 0; i < s->tmp_a64_count; i++) {
233 tcg_temp_free_i64(s->tmp_a64[i]);
235 init_tmp_a64_array(s);
238 static TCGv_i64 new_tmp_a64(DisasContext *s)
240 assert(s->tmp_a64_count < TMP_A64_MAX);
241 return s->tmp_a64[s->tmp_a64_count++] = tcg_temp_new_i64();
244 static TCGv_i64 new_tmp_a64_zero(DisasContext *s)
246 TCGv_i64 t = new_tmp_a64(s);
247 tcg_gen_movi_i64(t, 0);
252 * Register access functions
254 * These functions are used for directly accessing a register in where
255 * changes to the final register value are likely to be made. If you
256 * need to use a register for temporary calculation (e.g. index type
257 * operations) use the read_* form.
259 * B1.2.1 Register mappings
261 * In instruction register encoding 31 can refer to ZR (zero register) or
262 * the SP (stack pointer) depending on context. In QEMU's case we map SP
263 * to cpu_X[31] and ZR accesses to a temporary which can be discarded.
264 * This is the point of the _sp forms.
266 static TCGv_i64 cpu_reg(DisasContext *s, int reg)
269 return new_tmp_a64_zero(s);
275 /* register access for when 31 == SP */
276 static TCGv_i64 cpu_reg_sp(DisasContext *s, int reg)
281 /* read a cpu register in 32bit/64bit mode. Returns a TCGv_i64
282 * representing the register contents. This TCGv is an auto-freed
283 * temporary so it need not be explicitly freed, and may be modified.
285 static TCGv_i64 read_cpu_reg(DisasContext *s, int reg, int sf)
287 TCGv_i64 v = new_tmp_a64(s);
290 tcg_gen_mov_i64(v, cpu_X[reg]);
292 tcg_gen_ext32u_i64(v, cpu_X[reg]);
295 tcg_gen_movi_i64(v, 0);
300 static TCGv_i64 read_cpu_reg_sp(DisasContext *s, int reg, int sf)
302 TCGv_i64 v = new_tmp_a64(s);
304 tcg_gen_mov_i64(v, cpu_X[reg]);
306 tcg_gen_ext32u_i64(v, cpu_X[reg]);
311 /* Return the offset into CPUARMState of a slice (from
312 * the least significant end) of FP register Qn (ie
314 * (Note that this is not the same mapping as for A32; see cpu.h)
316 static inline int fp_reg_offset(int regno, TCGMemOp size)
318 int offs = offsetof(CPUARMState, vfp.regs[regno * 2]);
319 #ifdef HOST_WORDS_BIGENDIAN
320 offs += (8 - (1 << size));
325 /* Offset of the high half of the 128 bit vector Qn */
326 static inline int fp_reg_hi_offset(int regno)
328 return offsetof(CPUARMState, vfp.regs[regno * 2 + 1]);
331 /* Convenience accessors for reading and writing single and double
332 * FP registers. Writing clears the upper parts of the associated
333 * 128 bit vector register, as required by the architecture.
334 * Note that unlike the GP register accessors, the values returned
335 * by the read functions must be manually freed.
337 static TCGv_i64 read_fp_dreg(DisasContext *s, int reg)
339 TCGv_i64 v = tcg_temp_new_i64();
341 tcg_gen_ld_i64(v, cpu_env, fp_reg_offset(reg, MO_64));
345 static TCGv_i32 read_fp_sreg(DisasContext *s, int reg)
347 TCGv_i32 v = tcg_temp_new_i32();
349 tcg_gen_ld_i32(v, cpu_env, fp_reg_offset(reg, MO_32));
353 static void write_fp_dreg(DisasContext *s, int reg, TCGv_i64 v)
355 TCGv_i64 tcg_zero = tcg_const_i64(0);
357 tcg_gen_st_i64(v, cpu_env, fp_reg_offset(reg, MO_64));
358 tcg_gen_st_i64(tcg_zero, cpu_env, fp_reg_hi_offset(reg));
359 tcg_temp_free_i64(tcg_zero);
362 static void write_fp_sreg(DisasContext *s, int reg, TCGv_i32 v)
364 TCGv_i64 tmp = tcg_temp_new_i64();
366 tcg_gen_extu_i32_i64(tmp, v);
367 write_fp_dreg(s, reg, tmp);
368 tcg_temp_free_i64(tmp);
371 static TCGv_ptr get_fpstatus_ptr(void)
373 TCGv_ptr statusptr = tcg_temp_new_ptr();
376 /* In A64 all instructions (both FP and Neon) use the FPCR;
377 * there is no equivalent of the A32 Neon "standard FPSCR value"
378 * and all operations use vfp.fp_status.
380 offset = offsetof(CPUARMState, vfp.fp_status);
381 tcg_gen_addi_ptr(statusptr, cpu_env, offset);
385 /* Set ZF and NF based on a 64 bit result. This is alas fiddlier
386 * than the 32 bit equivalent.
388 static inline void gen_set_NZ64(TCGv_i64 result)
390 TCGv_i64 flag = tcg_temp_new_i64();
392 tcg_gen_setcondi_i64(TCG_COND_NE, flag, result, 0);
393 tcg_gen_trunc_i64_i32(cpu_ZF, flag);
394 tcg_gen_shri_i64(flag, result, 32);
395 tcg_gen_trunc_i64_i32(cpu_NF, flag);
396 tcg_temp_free_i64(flag);
399 /* Set NZCV as for a logical operation: NZ as per result, CV cleared. */
400 static inline void gen_logic_CC(int sf, TCGv_i64 result)
403 gen_set_NZ64(result);
405 tcg_gen_trunc_i64_i32(cpu_ZF, result);
406 tcg_gen_trunc_i64_i32(cpu_NF, result);
408 tcg_gen_movi_i32(cpu_CF, 0);
409 tcg_gen_movi_i32(cpu_VF, 0);
412 /* dest = T0 + T1; compute C, N, V and Z flags */
413 static void gen_add_CC(int sf, TCGv_i64 dest, TCGv_i64 t0, TCGv_i64 t1)
416 TCGv_i64 result, flag, tmp;
417 result = tcg_temp_new_i64();
418 flag = tcg_temp_new_i64();
419 tmp = tcg_temp_new_i64();
421 tcg_gen_movi_i64(tmp, 0);
422 tcg_gen_add2_i64(result, flag, t0, tmp, t1, tmp);
424 tcg_gen_trunc_i64_i32(cpu_CF, flag);
426 gen_set_NZ64(result);
428 tcg_gen_xor_i64(flag, result, t0);
429 tcg_gen_xor_i64(tmp, t0, t1);
430 tcg_gen_andc_i64(flag, flag, tmp);
431 tcg_temp_free_i64(tmp);
432 tcg_gen_shri_i64(flag, flag, 32);
433 tcg_gen_trunc_i64_i32(cpu_VF, flag);
435 tcg_gen_mov_i64(dest, result);
436 tcg_temp_free_i64(result);
437 tcg_temp_free_i64(flag);
439 /* 32 bit arithmetic */
440 TCGv_i32 t0_32 = tcg_temp_new_i32();
441 TCGv_i32 t1_32 = tcg_temp_new_i32();
442 TCGv_i32 tmp = tcg_temp_new_i32();
444 tcg_gen_movi_i32(tmp, 0);
445 tcg_gen_trunc_i64_i32(t0_32, t0);
446 tcg_gen_trunc_i64_i32(t1_32, t1);
447 tcg_gen_add2_i32(cpu_NF, cpu_CF, t0_32, tmp, t1_32, tmp);
448 tcg_gen_mov_i32(cpu_ZF, cpu_NF);
449 tcg_gen_xor_i32(cpu_VF, cpu_NF, t0_32);
450 tcg_gen_xor_i32(tmp, t0_32, t1_32);
451 tcg_gen_andc_i32(cpu_VF, cpu_VF, tmp);
452 tcg_gen_extu_i32_i64(dest, cpu_NF);
454 tcg_temp_free_i32(tmp);
455 tcg_temp_free_i32(t0_32);
456 tcg_temp_free_i32(t1_32);
460 /* dest = T0 - T1; compute C, N, V and Z flags */
461 static void gen_sub_CC(int sf, TCGv_i64 dest, TCGv_i64 t0, TCGv_i64 t1)
464 /* 64 bit arithmetic */
465 TCGv_i64 result, flag, tmp;
467 result = tcg_temp_new_i64();
468 flag = tcg_temp_new_i64();
469 tcg_gen_sub_i64(result, t0, t1);
471 gen_set_NZ64(result);
473 tcg_gen_setcond_i64(TCG_COND_GEU, flag, t0, t1);
474 tcg_gen_trunc_i64_i32(cpu_CF, flag);
476 tcg_gen_xor_i64(flag, result, t0);
477 tmp = tcg_temp_new_i64();
478 tcg_gen_xor_i64(tmp, t0, t1);
479 tcg_gen_and_i64(flag, flag, tmp);
480 tcg_temp_free_i64(tmp);
481 tcg_gen_shri_i64(flag, flag, 32);
482 tcg_gen_trunc_i64_i32(cpu_VF, flag);
483 tcg_gen_mov_i64(dest, result);
484 tcg_temp_free_i64(flag);
485 tcg_temp_free_i64(result);
487 /* 32 bit arithmetic */
488 TCGv_i32 t0_32 = tcg_temp_new_i32();
489 TCGv_i32 t1_32 = tcg_temp_new_i32();
492 tcg_gen_trunc_i64_i32(t0_32, t0);
493 tcg_gen_trunc_i64_i32(t1_32, t1);
494 tcg_gen_sub_i32(cpu_NF, t0_32, t1_32);
495 tcg_gen_mov_i32(cpu_ZF, cpu_NF);
496 tcg_gen_setcond_i32(TCG_COND_GEU, cpu_CF, t0_32, t1_32);
497 tcg_gen_xor_i32(cpu_VF, cpu_NF, t0_32);
498 tmp = tcg_temp_new_i32();
499 tcg_gen_xor_i32(tmp, t0_32, t1_32);
500 tcg_temp_free_i32(t0_32);
501 tcg_temp_free_i32(t1_32);
502 tcg_gen_and_i32(cpu_VF, cpu_VF, tmp);
503 tcg_temp_free_i32(tmp);
504 tcg_gen_extu_i32_i64(dest, cpu_NF);
508 /* dest = T0 + T1 + CF; do not compute flags. */
509 static void gen_adc(int sf, TCGv_i64 dest, TCGv_i64 t0, TCGv_i64 t1)
511 TCGv_i64 flag = tcg_temp_new_i64();
512 tcg_gen_extu_i32_i64(flag, cpu_CF);
513 tcg_gen_add_i64(dest, t0, t1);
514 tcg_gen_add_i64(dest, dest, flag);
515 tcg_temp_free_i64(flag);
518 tcg_gen_ext32u_i64(dest, dest);
522 /* dest = T0 + T1 + CF; compute C, N, V and Z flags. */
523 static void gen_adc_CC(int sf, TCGv_i64 dest, TCGv_i64 t0, TCGv_i64 t1)
526 TCGv_i64 result, cf_64, vf_64, tmp;
527 result = tcg_temp_new_i64();
528 cf_64 = tcg_temp_new_i64();
529 vf_64 = tcg_temp_new_i64();
530 tmp = tcg_const_i64(0);
532 tcg_gen_extu_i32_i64(cf_64, cpu_CF);
533 tcg_gen_add2_i64(result, cf_64, t0, tmp, cf_64, tmp);
534 tcg_gen_add2_i64(result, cf_64, result, cf_64, t1, tmp);
535 tcg_gen_trunc_i64_i32(cpu_CF, cf_64);
536 gen_set_NZ64(result);
538 tcg_gen_xor_i64(vf_64, result, t0);
539 tcg_gen_xor_i64(tmp, t0, t1);
540 tcg_gen_andc_i64(vf_64, vf_64, tmp);
541 tcg_gen_shri_i64(vf_64, vf_64, 32);
542 tcg_gen_trunc_i64_i32(cpu_VF, vf_64);
544 tcg_gen_mov_i64(dest, result);
546 tcg_temp_free_i64(tmp);
547 tcg_temp_free_i64(vf_64);
548 tcg_temp_free_i64(cf_64);
549 tcg_temp_free_i64(result);
551 TCGv_i32 t0_32, t1_32, tmp;
552 t0_32 = tcg_temp_new_i32();
553 t1_32 = tcg_temp_new_i32();
554 tmp = tcg_const_i32(0);
556 tcg_gen_trunc_i64_i32(t0_32, t0);
557 tcg_gen_trunc_i64_i32(t1_32, t1);
558 tcg_gen_add2_i32(cpu_NF, cpu_CF, t0_32, tmp, cpu_CF, tmp);
559 tcg_gen_add2_i32(cpu_NF, cpu_CF, cpu_NF, cpu_CF, t1_32, tmp);
561 tcg_gen_mov_i32(cpu_ZF, cpu_NF);
562 tcg_gen_xor_i32(cpu_VF, cpu_NF, t0_32);
563 tcg_gen_xor_i32(tmp, t0_32, t1_32);
564 tcg_gen_andc_i32(cpu_VF, cpu_VF, tmp);
565 tcg_gen_extu_i32_i64(dest, cpu_NF);
567 tcg_temp_free_i32(tmp);
568 tcg_temp_free_i32(t1_32);
569 tcg_temp_free_i32(t0_32);
574 * Load/Store generators
578 * Store from GPR register to memory
580 static void do_gpr_st(DisasContext *s, TCGv_i64 source,
581 TCGv_i64 tcg_addr, int size)
584 tcg_gen_qemu_st_i64(source, tcg_addr, get_mem_index(s), MO_TE + size);
588 * Load from memory to GPR register
590 static void do_gpr_ld(DisasContext *s, TCGv_i64 dest, TCGv_i64 tcg_addr,
591 int size, bool is_signed, bool extend)
593 TCGMemOp memop = MO_TE + size;
601 tcg_gen_qemu_ld_i64(dest, tcg_addr, get_mem_index(s), memop);
603 if (extend && is_signed) {
605 tcg_gen_ext32u_i64(dest, dest);
610 * Store from FP register to memory
612 static void do_fp_st(DisasContext *s, int srcidx, TCGv_i64 tcg_addr, int size)
614 /* This writes the bottom N bits of a 128 bit wide vector to memory */
615 TCGv_i64 tmp = tcg_temp_new_i64();
616 tcg_gen_ld_i64(tmp, cpu_env, fp_reg_offset(srcidx, MO_64));
618 tcg_gen_qemu_st_i64(tmp, tcg_addr, get_mem_index(s), MO_TE + size);
620 TCGv_i64 tcg_hiaddr = tcg_temp_new_i64();
621 tcg_gen_qemu_st_i64(tmp, tcg_addr, get_mem_index(s), MO_TEQ);
622 tcg_gen_qemu_st64(tmp, tcg_addr, get_mem_index(s));
623 tcg_gen_ld_i64(tmp, cpu_env, fp_reg_hi_offset(srcidx));
624 tcg_gen_addi_i64(tcg_hiaddr, tcg_addr, 8);
625 tcg_gen_qemu_st_i64(tmp, tcg_hiaddr, get_mem_index(s), MO_TEQ);
626 tcg_temp_free_i64(tcg_hiaddr);
629 tcg_temp_free_i64(tmp);
633 * Load from memory to FP register
635 static void do_fp_ld(DisasContext *s, int destidx, TCGv_i64 tcg_addr, int size)
637 /* This always zero-extends and writes to a full 128 bit wide vector */
638 TCGv_i64 tmplo = tcg_temp_new_i64();
642 TCGMemOp memop = MO_TE + size;
643 tmphi = tcg_const_i64(0);
644 tcg_gen_qemu_ld_i64(tmplo, tcg_addr, get_mem_index(s), memop);
647 tmphi = tcg_temp_new_i64();
648 tcg_hiaddr = tcg_temp_new_i64();
650 tcg_gen_qemu_ld_i64(tmplo, tcg_addr, get_mem_index(s), MO_TEQ);
651 tcg_gen_addi_i64(tcg_hiaddr, tcg_addr, 8);
652 tcg_gen_qemu_ld_i64(tmphi, tcg_hiaddr, get_mem_index(s), MO_TEQ);
653 tcg_temp_free_i64(tcg_hiaddr);
656 tcg_gen_st_i64(tmplo, cpu_env, fp_reg_offset(destidx, MO_64));
657 tcg_gen_st_i64(tmphi, cpu_env, fp_reg_hi_offset(destidx));
659 tcg_temp_free_i64(tmplo);
660 tcg_temp_free_i64(tmphi);
664 * This utility function is for doing register extension with an
665 * optional shift. You will likely want to pass a temporary for the
666 * destination register. See DecodeRegExtend() in the ARM ARM.
668 static void ext_and_shift_reg(TCGv_i64 tcg_out, TCGv_i64 tcg_in,
669 int option, unsigned int shift)
671 int extsize = extract32(option, 0, 2);
672 bool is_signed = extract32(option, 2, 1);
677 tcg_gen_ext8s_i64(tcg_out, tcg_in);
680 tcg_gen_ext16s_i64(tcg_out, tcg_in);
683 tcg_gen_ext32s_i64(tcg_out, tcg_in);
686 tcg_gen_mov_i64(tcg_out, tcg_in);
692 tcg_gen_ext8u_i64(tcg_out, tcg_in);
695 tcg_gen_ext16u_i64(tcg_out, tcg_in);
698 tcg_gen_ext32u_i64(tcg_out, tcg_in);
701 tcg_gen_mov_i64(tcg_out, tcg_in);
707 tcg_gen_shli_i64(tcg_out, tcg_out, shift);
711 static inline void gen_check_sp_alignment(DisasContext *s)
713 /* The AArch64 architecture mandates that (if enabled via PSTATE
714 * or SCTLR bits) there is a check that SP is 16-aligned on every
715 * SP-relative load or store (with an exception generated if it is not).
716 * In line with general QEMU practice regarding misaligned accesses,
717 * we omit these checks for the sake of guest program performance.
718 * This function is provided as a hook so we can more easily add these
719 * checks in future (possibly as a "favour catching guest program bugs
720 * over speed" user selectable option).
725 * the instruction disassembly implemented here matches
726 * the instruction encoding classifications in chapter 3 (C3)
727 * of the ARM Architecture Reference Manual (DDI0487A_a)
730 /* C3.2.7 Unconditional branch (immediate)
732 * +----+-----------+-------------------------------------+
733 * | op | 0 0 1 0 1 | imm26 |
734 * +----+-----------+-------------------------------------+
736 static void disas_uncond_b_imm(DisasContext *s, uint32_t insn)
738 uint64_t addr = s->pc + sextract32(insn, 0, 26) * 4 - 4;
740 if (insn & (1 << 31)) {
741 /* C5.6.26 BL Branch with link */
742 tcg_gen_movi_i64(cpu_reg(s, 30), s->pc);
745 /* C5.6.20 B Branch / C5.6.26 BL Branch with link */
746 gen_goto_tb(s, 0, addr);
749 /* C3.2.1 Compare & branch (immediate)
750 * 31 30 25 24 23 5 4 0
751 * +----+-------------+----+---------------------+--------+
752 * | sf | 0 1 1 0 1 0 | op | imm19 | Rt |
753 * +----+-------------+----+---------------------+--------+
755 static void disas_comp_b_imm(DisasContext *s, uint32_t insn)
757 unsigned int sf, op, rt;
762 sf = extract32(insn, 31, 1);
763 op = extract32(insn, 24, 1); /* 0: CBZ; 1: CBNZ */
764 rt = extract32(insn, 0, 5);
765 addr = s->pc + sextract32(insn, 5, 19) * 4 - 4;
767 tcg_cmp = read_cpu_reg(s, rt, sf);
768 label_match = gen_new_label();
770 tcg_gen_brcondi_i64(op ? TCG_COND_NE : TCG_COND_EQ,
771 tcg_cmp, 0, label_match);
773 gen_goto_tb(s, 0, s->pc);
774 gen_set_label(label_match);
775 gen_goto_tb(s, 1, addr);
778 /* C3.2.5 Test & branch (immediate)
779 * 31 30 25 24 23 19 18 5 4 0
780 * +----+-------------+----+-------+-------------+------+
781 * | b5 | 0 1 1 0 1 1 | op | b40 | imm14 | Rt |
782 * +----+-------------+----+-------+-------------+------+
784 static void disas_test_b_imm(DisasContext *s, uint32_t insn)
786 unsigned int bit_pos, op, rt;
791 bit_pos = (extract32(insn, 31, 1) << 5) | extract32(insn, 19, 5);
792 op = extract32(insn, 24, 1); /* 0: TBZ; 1: TBNZ */
793 addr = s->pc + sextract32(insn, 5, 14) * 4 - 4;
794 rt = extract32(insn, 0, 5);
796 tcg_cmp = tcg_temp_new_i64();
797 tcg_gen_andi_i64(tcg_cmp, cpu_reg(s, rt), (1ULL << bit_pos));
798 label_match = gen_new_label();
799 tcg_gen_brcondi_i64(op ? TCG_COND_NE : TCG_COND_EQ,
800 tcg_cmp, 0, label_match);
801 tcg_temp_free_i64(tcg_cmp);
802 gen_goto_tb(s, 0, s->pc);
803 gen_set_label(label_match);
804 gen_goto_tb(s, 1, addr);
807 /* C3.2.2 / C5.6.19 Conditional branch (immediate)
808 * 31 25 24 23 5 4 3 0
809 * +---------------+----+---------------------+----+------+
810 * | 0 1 0 1 0 1 0 | o1 | imm19 | o0 | cond |
811 * +---------------+----+---------------------+----+------+
813 static void disas_cond_b_imm(DisasContext *s, uint32_t insn)
818 if ((insn & (1 << 4)) || (insn & (1 << 24))) {
819 unallocated_encoding(s);
822 addr = s->pc + sextract32(insn, 5, 19) * 4 - 4;
823 cond = extract32(insn, 0, 4);
826 /* genuinely conditional branches */
827 int label_match = gen_new_label();
828 arm_gen_test_cc(cond, label_match);
829 gen_goto_tb(s, 0, s->pc);
830 gen_set_label(label_match);
831 gen_goto_tb(s, 1, addr);
833 /* 0xe and 0xf are both "always" conditions */
834 gen_goto_tb(s, 0, addr);
839 static void handle_hint(DisasContext *s, uint32_t insn,
840 unsigned int op1, unsigned int op2, unsigned int crm)
842 unsigned int selector = crm << 3 | op2;
845 unallocated_encoding(s);
857 /* we treat all as NOP at least for now */
860 /* default specified as NOP equivalent */
865 static void gen_clrex(DisasContext *s, uint32_t insn)
867 tcg_gen_movi_i64(cpu_exclusive_addr, -1);
870 /* CLREX, DSB, DMB, ISB */
871 static void handle_sync(DisasContext *s, uint32_t insn,
872 unsigned int op1, unsigned int op2, unsigned int crm)
875 unallocated_encoding(s);
886 /* We don't emulate caches so barriers are no-ops */
889 unallocated_encoding(s);
894 /* C5.6.130 MSR (immediate) - move immediate to processor state field */
895 static void handle_msr_i(DisasContext *s, uint32_t insn,
896 unsigned int op1, unsigned int op2, unsigned int crm)
898 unsupported_encoding(s, insn);
901 static void gen_get_nzcv(TCGv_i64 tcg_rt)
903 TCGv_i32 tmp = tcg_temp_new_i32();
904 TCGv_i32 nzcv = tcg_temp_new_i32();
906 /* build bit 31, N */
907 tcg_gen_andi_i32(nzcv, cpu_NF, (1 << 31));
908 /* build bit 30, Z */
909 tcg_gen_setcondi_i32(TCG_COND_EQ, tmp, cpu_ZF, 0);
910 tcg_gen_deposit_i32(nzcv, nzcv, tmp, 30, 1);
911 /* build bit 29, C */
912 tcg_gen_deposit_i32(nzcv, nzcv, cpu_CF, 29, 1);
913 /* build bit 28, V */
914 tcg_gen_shri_i32(tmp, cpu_VF, 31);
915 tcg_gen_deposit_i32(nzcv, nzcv, tmp, 28, 1);
916 /* generate result */
917 tcg_gen_extu_i32_i64(tcg_rt, nzcv);
919 tcg_temp_free_i32(nzcv);
920 tcg_temp_free_i32(tmp);
923 static void gen_set_nzcv(TCGv_i64 tcg_rt)
926 TCGv_i32 nzcv = tcg_temp_new_i32();
928 /* take NZCV from R[t] */
929 tcg_gen_trunc_i64_i32(nzcv, tcg_rt);
932 tcg_gen_andi_i32(cpu_NF, nzcv, (1 << 31));
934 tcg_gen_andi_i32(cpu_ZF, nzcv, (1 << 30));
935 tcg_gen_setcondi_i32(TCG_COND_EQ, cpu_ZF, cpu_ZF, 0);
937 tcg_gen_andi_i32(cpu_CF, nzcv, (1 << 29));
938 tcg_gen_shri_i32(cpu_CF, cpu_CF, 29);
940 tcg_gen_andi_i32(cpu_VF, nzcv, (1 << 28));
941 tcg_gen_shli_i32(cpu_VF, cpu_VF, 3);
942 tcg_temp_free_i32(nzcv);
945 /* C5.6.129 MRS - move from system register
946 * C5.6.131 MSR (register) - move to system register
949 * These are all essentially the same insn in 'read' and 'write'
950 * versions, with varying op0 fields.
952 static void handle_sys(DisasContext *s, uint32_t insn, bool isread,
953 unsigned int op0, unsigned int op1, unsigned int op2,
954 unsigned int crn, unsigned int crm, unsigned int rt)
956 const ARMCPRegInfo *ri;
959 ri = get_arm_cp_reginfo(s->cp_regs,
960 ENCODE_AA64_CP_REG(CP_REG_ARM64_SYSREG_CP,
961 crn, crm, op0, op1, op2));
964 /* Unknown register */
965 unallocated_encoding(s);
969 /* Check access permissions */
970 if (!cp_access_ok(s->current_pl, ri, isread)) {
971 unallocated_encoding(s);
975 /* Handle special cases first */
976 switch (ri->type & ~(ARM_CP_FLAG_MASK & ~ARM_CP_SPECIAL)) {
980 tcg_rt = cpu_reg(s, rt);
982 gen_get_nzcv(tcg_rt);
984 gen_set_nzcv(tcg_rt);
991 if (use_icount && (ri->type & ARM_CP_IO)) {
995 tcg_rt = cpu_reg(s, rt);
998 if (ri->type & ARM_CP_CONST) {
999 tcg_gen_movi_i64(tcg_rt, ri->resetvalue);
1000 } else if (ri->readfn) {
1002 gen_a64_set_pc_im(s->pc - 4);
1003 tmpptr = tcg_const_ptr(ri);
1004 gen_helper_get_cp_reg64(tcg_rt, cpu_env, tmpptr);
1005 tcg_temp_free_ptr(tmpptr);
1007 tcg_gen_ld_i64(tcg_rt, cpu_env, ri->fieldoffset);
1010 if (ri->type & ARM_CP_CONST) {
1011 /* If not forbidden by access permissions, treat as WI */
1013 } else if (ri->writefn) {
1015 gen_a64_set_pc_im(s->pc - 4);
1016 tmpptr = tcg_const_ptr(ri);
1017 gen_helper_set_cp_reg64(cpu_env, tmpptr, tcg_rt);
1018 tcg_temp_free_ptr(tmpptr);
1020 tcg_gen_st_i64(tcg_rt, cpu_env, ri->fieldoffset);
1024 if (use_icount && (ri->type & ARM_CP_IO)) {
1025 /* I/O operations must end the TB here (whether read or write) */
1027 s->is_jmp = DISAS_UPDATE;
1028 } else if (!isread && !(ri->type & ARM_CP_SUPPRESS_TB_END)) {
1029 /* We default to ending the TB on a coprocessor register write,
1030 * but allow this to be suppressed by the register definition
1031 * (usually only necessary to work around guest bugs).
1033 s->is_jmp = DISAS_UPDATE;
1038 * 31 22 21 20 19 18 16 15 12 11 8 7 5 4 0
1039 * +---------------------+---+-----+-----+-------+-------+-----+------+
1040 * | 1 1 0 1 0 1 0 1 0 0 | L | op0 | op1 | CRn | CRm | op2 | Rt |
1041 * +---------------------+---+-----+-----+-------+-------+-----+------+
1043 static void disas_system(DisasContext *s, uint32_t insn)
1045 unsigned int l, op0, op1, crn, crm, op2, rt;
1046 l = extract32(insn, 21, 1);
1047 op0 = extract32(insn, 19, 2);
1048 op1 = extract32(insn, 16, 3);
1049 crn = extract32(insn, 12, 4);
1050 crm = extract32(insn, 8, 4);
1051 op2 = extract32(insn, 5, 3);
1052 rt = extract32(insn, 0, 5);
1055 if (l || rt != 31) {
1056 unallocated_encoding(s);
1060 case 2: /* C5.6.68 HINT */
1061 handle_hint(s, insn, op1, op2, crm);
1063 case 3: /* CLREX, DSB, DMB, ISB */
1064 handle_sync(s, insn, op1, op2, crm);
1066 case 4: /* C5.6.130 MSR (immediate) */
1067 handle_msr_i(s, insn, op1, op2, crm);
1070 unallocated_encoding(s);
1075 handle_sys(s, insn, l, op0, op1, op2, crn, crm, rt);
1078 /* C3.2.3 Exception generation
1080 * 31 24 23 21 20 5 4 2 1 0
1081 * +-----------------+-----+------------------------+-----+----+
1082 * | 1 1 0 1 0 1 0 0 | opc | imm16 | op2 | LL |
1083 * +-----------------------+------------------------+----------+
1085 static void disas_exc(DisasContext *s, uint32_t insn)
1087 int opc = extract32(insn, 21, 3);
1088 int op2_ll = extract32(insn, 0, 5);
1092 /* SVC, HVC, SMC; since we don't support the Virtualization
1093 * or TrustZone extensions these all UNDEF except SVC.
1096 unallocated_encoding(s);
1099 gen_exception_insn(s, 0, EXCP_SWI);
1103 unallocated_encoding(s);
1107 gen_exception_insn(s, 0, EXCP_BKPT);
1111 unallocated_encoding(s);
1115 unsupported_encoding(s, insn);
1118 if (op2_ll < 1 || op2_ll > 3) {
1119 unallocated_encoding(s);
1122 /* DCPS1, DCPS2, DCPS3 */
1123 unsupported_encoding(s, insn);
1126 unallocated_encoding(s);
1131 /* C3.2.7 Unconditional branch (register)
1132 * 31 25 24 21 20 16 15 10 9 5 4 0
1133 * +---------------+-------+-------+-------+------+-------+
1134 * | 1 1 0 1 0 1 1 | opc | op2 | op3 | Rn | op4 |
1135 * +---------------+-------+-------+-------+------+-------+
1137 static void disas_uncond_b_reg(DisasContext *s, uint32_t insn)
1139 unsigned int opc, op2, op3, rn, op4;
1141 opc = extract32(insn, 21, 4);
1142 op2 = extract32(insn, 16, 5);
1143 op3 = extract32(insn, 10, 6);
1144 rn = extract32(insn, 5, 5);
1145 op4 = extract32(insn, 0, 5);
1147 if (op4 != 0x0 || op3 != 0x0 || op2 != 0x1f) {
1148 unallocated_encoding(s);
1157 tcg_gen_movi_i64(cpu_reg(s, 30), s->pc);
1162 unallocated_encoding(s);
1164 unsupported_encoding(s, insn);
1168 unallocated_encoding(s);
1172 tcg_gen_mov_i64(cpu_pc, cpu_reg(s, rn));
1173 s->is_jmp = DISAS_JUMP;
1176 /* C3.2 Branches, exception generating and system instructions */
1177 static void disas_b_exc_sys(DisasContext *s, uint32_t insn)
1179 switch (extract32(insn, 25, 7)) {
1180 case 0x0a: case 0x0b:
1181 case 0x4a: case 0x4b: /* Unconditional branch (immediate) */
1182 disas_uncond_b_imm(s, insn);
1184 case 0x1a: case 0x5a: /* Compare & branch (immediate) */
1185 disas_comp_b_imm(s, insn);
1187 case 0x1b: case 0x5b: /* Test & branch (immediate) */
1188 disas_test_b_imm(s, insn);
1190 case 0x2a: /* Conditional branch (immediate) */
1191 disas_cond_b_imm(s, insn);
1193 case 0x6a: /* Exception generation / System */
1194 if (insn & (1 << 24)) {
1195 disas_system(s, insn);
1200 case 0x6b: /* Unconditional branch (register) */
1201 disas_uncond_b_reg(s, insn);
1204 unallocated_encoding(s);
1210 * Load/Store exclusive instructions are implemented by remembering
1211 * the value/address loaded, and seeing if these are the same
1212 * when the store is performed. This is not actually the architecturally
1213 * mandated semantics, but it works for typical guest code sequences
1214 * and avoids having to monitor regular stores.
1216 * In system emulation mode only one CPU will be running at once, so
1217 * this sequence is effectively atomic. In user emulation mode we
1218 * throw an exception and handle the atomic operation elsewhere.
1220 static void gen_load_exclusive(DisasContext *s, int rt, int rt2,
1221 TCGv_i64 addr, int size, bool is_pair)
1223 TCGv_i64 tmp = tcg_temp_new_i64();
1224 TCGMemOp memop = MO_TE + size;
1226 g_assert(size <= 3);
1227 tcg_gen_qemu_ld_i64(tmp, addr, get_mem_index(s), memop);
1230 TCGv_i64 addr2 = tcg_temp_new_i64();
1231 TCGv_i64 hitmp = tcg_temp_new_i64();
1233 g_assert(size >= 2);
1234 tcg_gen_addi_i64(addr2, addr, 1 << size);
1235 tcg_gen_qemu_ld_i64(hitmp, addr2, get_mem_index(s), memop);
1236 tcg_temp_free_i64(addr2);
1237 tcg_gen_mov_i64(cpu_exclusive_high, hitmp);
1238 tcg_gen_mov_i64(cpu_reg(s, rt2), hitmp);
1239 tcg_temp_free_i64(hitmp);
1242 tcg_gen_mov_i64(cpu_exclusive_val, tmp);
1243 tcg_gen_mov_i64(cpu_reg(s, rt), tmp);
1245 tcg_temp_free_i64(tmp);
1246 tcg_gen_mov_i64(cpu_exclusive_addr, addr);
1249 #ifdef CONFIG_USER_ONLY
1250 static void gen_store_exclusive(DisasContext *s, int rd, int rt, int rt2,
1251 TCGv_i64 addr, int size, int is_pair)
1253 tcg_gen_mov_i64(cpu_exclusive_test, addr);
1254 tcg_gen_movi_i32(cpu_exclusive_info,
1255 size | is_pair << 2 | (rd << 4) | (rt << 9) | (rt2 << 14));
1256 gen_exception_insn(s, 4, EXCP_STREX);
1259 static void gen_store_exclusive(DisasContext *s, int rd, int rt, int rt2,
1260 TCGv_i64 addr, int size, int is_pair)
1262 qemu_log_mask(LOG_UNIMP,
1263 "%s:%d: system mode store_exclusive unsupported "
1264 "at pc=%016" PRIx64 "\n",
1265 __FILE__, __LINE__, s->pc - 4);
1269 /* C3.3.6 Load/store exclusive
1271 * 31 30 29 24 23 22 21 20 16 15 14 10 9 5 4 0
1272 * +-----+-------------+----+---+----+------+----+-------+------+------+
1273 * | sz | 0 0 1 0 0 0 | o2 | L | o1 | Rs | o0 | Rt2 | Rn | Rt |
1274 * +-----+-------------+----+---+----+------+----+-------+------+------+
1276 * sz: 00 -> 8 bit, 01 -> 16 bit, 10 -> 32 bit, 11 -> 64 bit
1277 * L: 0 -> store, 1 -> load
1278 * o2: 0 -> exclusive, 1 -> not
1279 * o1: 0 -> single register, 1 -> register pair
1280 * o0: 1 -> load-acquire/store-release, 0 -> not
1282 * o0 == 0 AND o2 == 1 is un-allocated
1283 * o1 == 1 is un-allocated except for 32 and 64 bit sizes
1285 static void disas_ldst_excl(DisasContext *s, uint32_t insn)
1287 int rt = extract32(insn, 0, 5);
1288 int rn = extract32(insn, 5, 5);
1289 int rt2 = extract32(insn, 10, 5);
1290 int is_lasr = extract32(insn, 15, 1);
1291 int rs = extract32(insn, 16, 5);
1292 int is_pair = extract32(insn, 21, 1);
1293 int is_store = !extract32(insn, 22, 1);
1294 int is_excl = !extract32(insn, 23, 1);
1295 int size = extract32(insn, 30, 2);
1298 if ((!is_excl && !is_lasr) ||
1299 (is_pair && size < 2)) {
1300 unallocated_encoding(s);
1305 gen_check_sp_alignment(s);
1307 tcg_addr = read_cpu_reg_sp(s, rn, 1);
1309 /* Note that since TCG is single threaded load-acquire/store-release
1310 * semantics require no extra if (is_lasr) { ... } handling.
1315 gen_load_exclusive(s, rt, rt2, tcg_addr, size, is_pair);
1317 gen_store_exclusive(s, rs, rt, rt2, tcg_addr, size, is_pair);
1320 TCGv_i64 tcg_rt = cpu_reg(s, rt);
1322 do_gpr_st(s, tcg_rt, tcg_addr, size);
1324 do_gpr_ld(s, tcg_rt, tcg_addr, size, false, false);
1327 TCGv_i64 tcg_rt2 = cpu_reg(s, rt);
1328 tcg_gen_addi_i64(tcg_addr, tcg_addr, 1 << size);
1330 do_gpr_st(s, tcg_rt2, tcg_addr, size);
1332 do_gpr_ld(s, tcg_rt2, tcg_addr, size, false, false);
1339 * C3.3.5 Load register (literal)
1341 * 31 30 29 27 26 25 24 23 5 4 0
1342 * +-----+-------+---+-----+-------------------+-------+
1343 * | opc | 0 1 1 | V | 0 0 | imm19 | Rt |
1344 * +-----+-------+---+-----+-------------------+-------+
1346 * V: 1 -> vector (simd/fp)
1347 * opc (non-vector): 00 -> 32 bit, 01 -> 64 bit,
1348 * 10-> 32 bit signed, 11 -> prefetch
1349 * opc (vector): 00 -> 32 bit, 01 -> 64 bit, 10 -> 128 bit (11 unallocated)
1351 static void disas_ld_lit(DisasContext *s, uint32_t insn)
1353 int rt = extract32(insn, 0, 5);
1354 int64_t imm = sextract32(insn, 5, 19) << 2;
1355 bool is_vector = extract32(insn, 26, 1);
1356 int opc = extract32(insn, 30, 2);
1357 bool is_signed = false;
1359 TCGv_i64 tcg_rt, tcg_addr;
1363 unallocated_encoding(s);
1369 /* PRFM (literal) : prefetch */
1372 size = 2 + extract32(opc, 0, 1);
1373 is_signed = extract32(opc, 1, 1);
1376 tcg_rt = cpu_reg(s, rt);
1378 tcg_addr = tcg_const_i64((s->pc - 4) + imm);
1380 do_fp_ld(s, rt, tcg_addr, size);
1382 do_gpr_ld(s, tcg_rt, tcg_addr, size, is_signed, false);
1384 tcg_temp_free_i64(tcg_addr);
1388 * C5.6.80 LDNP (Load Pair - non-temporal hint)
1389 * C5.6.81 LDP (Load Pair - non vector)
1390 * C5.6.82 LDPSW (Load Pair Signed Word - non vector)
1391 * C5.6.176 STNP (Store Pair - non-temporal hint)
1392 * C5.6.177 STP (Store Pair - non vector)
1393 * C6.3.165 LDNP (Load Pair of SIMD&FP - non-temporal hint)
1394 * C6.3.165 LDP (Load Pair of SIMD&FP)
1395 * C6.3.284 STNP (Store Pair of SIMD&FP - non-temporal hint)
1396 * C6.3.284 STP (Store Pair of SIMD&FP)
1398 * 31 30 29 27 26 25 24 23 22 21 15 14 10 9 5 4 0
1399 * +-----+-------+---+---+-------+---+-----------------------------+
1400 * | opc | 1 0 1 | V | 0 | index | L | imm7 | Rt2 | Rn | Rt |
1401 * +-----+-------+---+---+-------+---+-------+-------+------+------+
1403 * opc: LDP/STP/LDNP/STNP 00 -> 32 bit, 10 -> 64 bit
1405 * LDP/STP/LDNP/STNP (SIMD) 00 -> 32 bit, 01 -> 64 bit, 10 -> 128 bit
1406 * V: 0 -> GPR, 1 -> Vector
1407 * idx: 00 -> signed offset with non-temporal hint, 01 -> post-index,
1408 * 10 -> signed offset, 11 -> pre-index
1409 * L: 0 -> Store 1 -> Load
1411 * Rt, Rt2 = GPR or SIMD registers to be stored
1412 * Rn = general purpose register containing address
1413 * imm7 = signed offset (multiple of 4 or 8 depending on size)
1415 static void disas_ldst_pair(DisasContext *s, uint32_t insn)
1417 int rt = extract32(insn, 0, 5);
1418 int rn = extract32(insn, 5, 5);
1419 int rt2 = extract32(insn, 10, 5);
1420 int64_t offset = sextract32(insn, 15, 7);
1421 int index = extract32(insn, 23, 2);
1422 bool is_vector = extract32(insn, 26, 1);
1423 bool is_load = extract32(insn, 22, 1);
1424 int opc = extract32(insn, 30, 2);
1426 bool is_signed = false;
1427 bool postindex = false;
1430 TCGv_i64 tcg_addr; /* calculated address */
1434 unallocated_encoding(s);
1441 size = 2 + extract32(opc, 1, 1);
1442 is_signed = extract32(opc, 0, 1);
1443 if (!is_load && is_signed) {
1444 unallocated_encoding(s);
1450 case 1: /* post-index */
1455 /* signed offset with "non-temporal" hint. Since we don't emulate
1456 * caches we don't care about hints to the cache system about
1457 * data access patterns, and handle this identically to plain
1461 /* There is no non-temporal-hint version of LDPSW */
1462 unallocated_encoding(s);
1467 case 2: /* signed offset, rn not updated */
1470 case 3: /* pre-index */
1479 gen_check_sp_alignment(s);
1482 tcg_addr = read_cpu_reg_sp(s, rn, 1);
1485 tcg_gen_addi_i64(tcg_addr, tcg_addr, offset);
1490 do_fp_ld(s, rt, tcg_addr, size);
1492 do_fp_st(s, rt, tcg_addr, size);
1495 TCGv_i64 tcg_rt = cpu_reg(s, rt);
1497 do_gpr_ld(s, tcg_rt, tcg_addr, size, is_signed, false);
1499 do_gpr_st(s, tcg_rt, tcg_addr, size);
1502 tcg_gen_addi_i64(tcg_addr, tcg_addr, 1 << size);
1505 do_fp_ld(s, rt2, tcg_addr, size);
1507 do_fp_st(s, rt2, tcg_addr, size);
1510 TCGv_i64 tcg_rt2 = cpu_reg(s, rt2);
1512 do_gpr_ld(s, tcg_rt2, tcg_addr, size, is_signed, false);
1514 do_gpr_st(s, tcg_rt2, tcg_addr, size);
1520 tcg_gen_addi_i64(tcg_addr, tcg_addr, offset - (1 << size));
1522 tcg_gen_subi_i64(tcg_addr, tcg_addr, 1 << size);
1524 tcg_gen_mov_i64(cpu_reg_sp(s, rn), tcg_addr);
1529 * C3.3.8 Load/store (immediate post-indexed)
1530 * C3.3.9 Load/store (immediate pre-indexed)
1531 * C3.3.12 Load/store (unscaled immediate)
1533 * 31 30 29 27 26 25 24 23 22 21 20 12 11 10 9 5 4 0
1534 * +----+-------+---+-----+-----+---+--------+-----+------+------+
1535 * |size| 1 1 1 | V | 0 0 | opc | 0 | imm9 | idx | Rn | Rt |
1536 * +----+-------+---+-----+-----+---+--------+-----+------+------+
1538 * idx = 01 -> post-indexed, 11 pre-indexed, 00 unscaled imm. (no writeback)
1539 * V = 0 -> non-vector
1540 * size: 00 -> 8 bit, 01 -> 16 bit, 10 -> 32 bit, 11 -> 64bit
1541 * opc: 00 -> store, 01 -> loadu, 10 -> loads 64, 11 -> loads 32
1543 static void disas_ldst_reg_imm9(DisasContext *s, uint32_t insn)
1545 int rt = extract32(insn, 0, 5);
1546 int rn = extract32(insn, 5, 5);
1547 int imm9 = sextract32(insn, 12, 9);
1548 int opc = extract32(insn, 22, 2);
1549 int size = extract32(insn, 30, 2);
1550 int idx = extract32(insn, 10, 2);
1551 bool is_signed = false;
1552 bool is_store = false;
1553 bool is_extended = false;
1554 bool is_vector = extract32(insn, 26, 1);
1561 size |= (opc & 2) << 1;
1563 unallocated_encoding(s);
1566 is_store = ((opc & 1) == 0);
1568 if (size == 3 && opc == 2) {
1569 /* PRFM - prefetch */
1572 if (opc == 3 && size > 1) {
1573 unallocated_encoding(s);
1576 is_store = (opc == 0);
1577 is_signed = opc & (1<<1);
1578 is_extended = (size < 3) && (opc & 1);
1600 gen_check_sp_alignment(s);
1602 tcg_addr = read_cpu_reg_sp(s, rn, 1);
1605 tcg_gen_addi_i64(tcg_addr, tcg_addr, imm9);
1610 do_fp_st(s, rt, tcg_addr, size);
1612 do_fp_ld(s, rt, tcg_addr, size);
1615 TCGv_i64 tcg_rt = cpu_reg(s, rt);
1617 do_gpr_st(s, tcg_rt, tcg_addr, size);
1619 do_gpr_ld(s, tcg_rt, tcg_addr, size, is_signed, is_extended);
1624 TCGv_i64 tcg_rn = cpu_reg_sp(s, rn);
1626 tcg_gen_addi_i64(tcg_addr, tcg_addr, imm9);
1628 tcg_gen_mov_i64(tcg_rn, tcg_addr);
1633 * C3.3.10 Load/store (register offset)
1635 * 31 30 29 27 26 25 24 23 22 21 20 16 15 13 12 11 10 9 5 4 0
1636 * +----+-------+---+-----+-----+---+------+-----+--+-----+----+----+
1637 * |size| 1 1 1 | V | 0 0 | opc | 1 | Rm | opt | S| 1 0 | Rn | Rt |
1638 * +----+-------+---+-----+-----+---+------+-----+--+-----+----+----+
1641 * size: 00-> byte, 01 -> 16 bit, 10 -> 32bit, 11 -> 64bit
1642 * opc: 00 -> store, 01 -> loadu, 10 -> loads 64, 11 -> loads 32
1644 * size is opc<1>:size<1:0> so 100 -> 128 bit; 110 and 111 unallocated
1645 * opc<0>: 0 -> store, 1 -> load
1646 * V: 1 -> vector/simd
1647 * opt: extend encoding (see DecodeRegExtend)
1648 * S: if S=1 then scale (essentially index by sizeof(size))
1649 * Rt: register to transfer into/out of
1650 * Rn: address register or SP for base
1651 * Rm: offset register or ZR for offset
1653 static void disas_ldst_reg_roffset(DisasContext *s, uint32_t insn)
1655 int rt = extract32(insn, 0, 5);
1656 int rn = extract32(insn, 5, 5);
1657 int shift = extract32(insn, 12, 1);
1658 int rm = extract32(insn, 16, 5);
1659 int opc = extract32(insn, 22, 2);
1660 int opt = extract32(insn, 13, 3);
1661 int size = extract32(insn, 30, 2);
1662 bool is_signed = false;
1663 bool is_store = false;
1664 bool is_extended = false;
1665 bool is_vector = extract32(insn, 26, 1);
1670 if (extract32(opt, 1, 1) == 0) {
1671 unallocated_encoding(s);
1676 size |= (opc & 2) << 1;
1678 unallocated_encoding(s);
1681 is_store = !extract32(opc, 0, 1);
1683 if (size == 3 && opc == 2) {
1684 /* PRFM - prefetch */
1687 if (opc == 3 && size > 1) {
1688 unallocated_encoding(s);
1691 is_store = (opc == 0);
1692 is_signed = extract32(opc, 1, 1);
1693 is_extended = (size < 3) && extract32(opc, 0, 1);
1697 gen_check_sp_alignment(s);
1699 tcg_addr = read_cpu_reg_sp(s, rn, 1);
1701 tcg_rm = read_cpu_reg(s, rm, 1);
1702 ext_and_shift_reg(tcg_rm, tcg_rm, opt, shift ? size : 0);
1704 tcg_gen_add_i64(tcg_addr, tcg_addr, tcg_rm);
1708 do_fp_st(s, rt, tcg_addr, size);
1710 do_fp_ld(s, rt, tcg_addr, size);
1713 TCGv_i64 tcg_rt = cpu_reg(s, rt);
1715 do_gpr_st(s, tcg_rt, tcg_addr, size);
1717 do_gpr_ld(s, tcg_rt, tcg_addr, size, is_signed, is_extended);
1723 * C3.3.13 Load/store (unsigned immediate)
1725 * 31 30 29 27 26 25 24 23 22 21 10 9 5
1726 * +----+-------+---+-----+-----+------------+-------+------+
1727 * |size| 1 1 1 | V | 0 1 | opc | imm12 | Rn | Rt |
1728 * +----+-------+---+-----+-----+------------+-------+------+
1731 * size: 00-> byte, 01 -> 16 bit, 10 -> 32bit, 11 -> 64bit
1732 * opc: 00 -> store, 01 -> loadu, 10 -> loads 64, 11 -> loads 32
1734 * size is opc<1>:size<1:0> so 100 -> 128 bit; 110 and 111 unallocated
1735 * opc<0>: 0 -> store, 1 -> load
1736 * Rn: base address register (inc SP)
1737 * Rt: target register
1739 static void disas_ldst_reg_unsigned_imm(DisasContext *s, uint32_t insn)
1741 int rt = extract32(insn, 0, 5);
1742 int rn = extract32(insn, 5, 5);
1743 unsigned int imm12 = extract32(insn, 10, 12);
1744 bool is_vector = extract32(insn, 26, 1);
1745 int size = extract32(insn, 30, 2);
1746 int opc = extract32(insn, 22, 2);
1747 unsigned int offset;
1752 bool is_signed = false;
1753 bool is_extended = false;
1756 size |= (opc & 2) << 1;
1758 unallocated_encoding(s);
1761 is_store = !extract32(opc, 0, 1);
1763 if (size == 3 && opc == 2) {
1764 /* PRFM - prefetch */
1767 if (opc == 3 && size > 1) {
1768 unallocated_encoding(s);
1771 is_store = (opc == 0);
1772 is_signed = extract32(opc, 1, 1);
1773 is_extended = (size < 3) && extract32(opc, 0, 1);
1777 gen_check_sp_alignment(s);
1779 tcg_addr = read_cpu_reg_sp(s, rn, 1);
1780 offset = imm12 << size;
1781 tcg_gen_addi_i64(tcg_addr, tcg_addr, offset);
1785 do_fp_st(s, rt, tcg_addr, size);
1787 do_fp_ld(s, rt, tcg_addr, size);
1790 TCGv_i64 tcg_rt = cpu_reg(s, rt);
1792 do_gpr_st(s, tcg_rt, tcg_addr, size);
1794 do_gpr_ld(s, tcg_rt, tcg_addr, size, is_signed, is_extended);
1799 /* Load/store register (immediate forms) */
1800 static void disas_ldst_reg_imm(DisasContext *s, uint32_t insn)
1802 switch (extract32(insn, 10, 2)) {
1803 case 0: case 1: case 3:
1804 /* Load/store register (unscaled immediate) */
1805 /* Load/store immediate pre/post-indexed */
1806 disas_ldst_reg_imm9(s, insn);
1809 /* Load/store register unprivileged */
1810 unsupported_encoding(s, insn);
1813 unallocated_encoding(s);
1818 /* Load/store register (all forms) */
1819 static void disas_ldst_reg(DisasContext *s, uint32_t insn)
1821 switch (extract32(insn, 24, 2)) {
1823 if (extract32(insn, 21, 1) == 1 && extract32(insn, 10, 2) == 2) {
1824 disas_ldst_reg_roffset(s, insn);
1826 disas_ldst_reg_imm(s, insn);
1830 disas_ldst_reg_unsigned_imm(s, insn);
1833 unallocated_encoding(s);
1838 /* AdvSIMD load/store multiple structures */
1839 static void disas_ldst_multiple_struct(DisasContext *s, uint32_t insn)
1841 unsupported_encoding(s, insn);
1844 /* AdvSIMD load/store single structure */
1845 static void disas_ldst_single_struct(DisasContext *s, uint32_t insn)
1847 unsupported_encoding(s, insn);
1850 /* C3.3 Loads and stores */
1851 static void disas_ldst(DisasContext *s, uint32_t insn)
1853 switch (extract32(insn, 24, 6)) {
1854 case 0x08: /* Load/store exclusive */
1855 disas_ldst_excl(s, insn);
1857 case 0x18: case 0x1c: /* Load register (literal) */
1858 disas_ld_lit(s, insn);
1860 case 0x28: case 0x29:
1861 case 0x2c: case 0x2d: /* Load/store pair (all forms) */
1862 disas_ldst_pair(s, insn);
1864 case 0x38: case 0x39:
1865 case 0x3c: case 0x3d: /* Load/store register (all forms) */
1866 disas_ldst_reg(s, insn);
1868 case 0x0c: /* AdvSIMD load/store multiple structures */
1869 disas_ldst_multiple_struct(s, insn);
1871 case 0x0d: /* AdvSIMD load/store single structure */
1872 disas_ldst_single_struct(s, insn);
1875 unallocated_encoding(s);
1880 /* C3.4.6 PC-rel. addressing
1881 * 31 30 29 28 24 23 5 4 0
1882 * +----+-------+-----------+-------------------+------+
1883 * | op | immlo | 1 0 0 0 0 | immhi | Rd |
1884 * +----+-------+-----------+-------------------+------+
1886 static void disas_pc_rel_adr(DisasContext *s, uint32_t insn)
1888 unsigned int page, rd;
1892 page = extract32(insn, 31, 1);
1893 /* SignExtend(immhi:immlo) -> offset */
1894 offset = ((int64_t)sextract32(insn, 5, 19) << 2) | extract32(insn, 29, 2);
1895 rd = extract32(insn, 0, 5);
1899 /* ADRP (page based) */
1904 tcg_gen_movi_i64(cpu_reg(s, rd), base + offset);
1908 * C3.4.1 Add/subtract (immediate)
1910 * 31 30 29 28 24 23 22 21 10 9 5 4 0
1911 * +--+--+--+-----------+-----+-------------+-----+-----+
1912 * |sf|op| S| 1 0 0 0 1 |shift| imm12 | Rn | Rd |
1913 * +--+--+--+-----------+-----+-------------+-----+-----+
1915 * sf: 0 -> 32bit, 1 -> 64bit
1916 * op: 0 -> add , 1 -> sub
1918 * shift: 00 -> LSL imm by 0, 01 -> LSL imm by 12
1920 static void disas_add_sub_imm(DisasContext *s, uint32_t insn)
1922 int rd = extract32(insn, 0, 5);
1923 int rn = extract32(insn, 5, 5);
1924 uint64_t imm = extract32(insn, 10, 12);
1925 int shift = extract32(insn, 22, 2);
1926 bool setflags = extract32(insn, 29, 1);
1927 bool sub_op = extract32(insn, 30, 1);
1928 bool is_64bit = extract32(insn, 31, 1);
1930 TCGv_i64 tcg_rn = cpu_reg_sp(s, rn);
1931 TCGv_i64 tcg_rd = setflags ? cpu_reg(s, rd) : cpu_reg_sp(s, rd);
1932 TCGv_i64 tcg_result;
1941 unallocated_encoding(s);
1945 tcg_result = tcg_temp_new_i64();
1948 tcg_gen_subi_i64(tcg_result, tcg_rn, imm);
1950 tcg_gen_addi_i64(tcg_result, tcg_rn, imm);
1953 TCGv_i64 tcg_imm = tcg_const_i64(imm);
1955 gen_sub_CC(is_64bit, tcg_result, tcg_rn, tcg_imm);
1957 gen_add_CC(is_64bit, tcg_result, tcg_rn, tcg_imm);
1959 tcg_temp_free_i64(tcg_imm);
1963 tcg_gen_mov_i64(tcg_rd, tcg_result);
1965 tcg_gen_ext32u_i64(tcg_rd, tcg_result);
1968 tcg_temp_free_i64(tcg_result);
1971 /* The input should be a value in the bottom e bits (with higher
1972 * bits zero); returns that value replicated into every element
1973 * of size e in a 64 bit integer.
1975 static uint64_t bitfield_replicate(uint64_t mask, unsigned int e)
1985 /* Return a value with the bottom len bits set (where 0 < len <= 64) */
1986 static inline uint64_t bitmask64(unsigned int length)
1988 assert(length > 0 && length <= 64);
1989 return ~0ULL >> (64 - length);
1992 /* Simplified variant of pseudocode DecodeBitMasks() for the case where we
1993 * only require the wmask. Returns false if the imms/immr/immn are a reserved
1994 * value (ie should cause a guest UNDEF exception), and true if they are
1995 * valid, in which case the decoded bit pattern is written to result.
1997 static bool logic_imm_decode_wmask(uint64_t *result, unsigned int immn,
1998 unsigned int imms, unsigned int immr)
2001 unsigned e, levels, s, r;
2004 assert(immn < 2 && imms < 64 && immr < 64);
2006 /* The bit patterns we create here are 64 bit patterns which
2007 * are vectors of identical elements of size e = 2, 4, 8, 16, 32 or
2008 * 64 bits each. Each element contains the same value: a run
2009 * of between 1 and e-1 non-zero bits, rotated within the
2010 * element by between 0 and e-1 bits.
2012 * The element size and run length are encoded into immn (1 bit)
2013 * and imms (6 bits) as follows:
2014 * 64 bit elements: immn = 1, imms = <length of run - 1>
2015 * 32 bit elements: immn = 0, imms = 0 : <length of run - 1>
2016 * 16 bit elements: immn = 0, imms = 10 : <length of run - 1>
2017 * 8 bit elements: immn = 0, imms = 110 : <length of run - 1>
2018 * 4 bit elements: immn = 0, imms = 1110 : <length of run - 1>
2019 * 2 bit elements: immn = 0, imms = 11110 : <length of run - 1>
2020 * Notice that immn = 0, imms = 11111x is the only combination
2021 * not covered by one of the above options; this is reserved.
2022 * Further, <length of run - 1> all-ones is a reserved pattern.
2024 * In all cases the rotation is by immr % e (and immr is 6 bits).
2027 /* First determine the element size */
2028 len = 31 - clz32((immn << 6) | (~imms & 0x3f));
2030 /* This is the immn == 0, imms == 0x11111x case */
2040 /* <length of run - 1> mustn't be all-ones. */
2044 /* Create the value of one element: s+1 set bits rotated
2045 * by r within the element (which is e bits wide)...
2047 mask = bitmask64(s + 1);
2048 mask = (mask >> r) | (mask << (e - r));
2049 /* ...then replicate the element over the whole 64 bit value */
2050 mask = bitfield_replicate(mask, e);
2055 /* C3.4.4 Logical (immediate)
2056 * 31 30 29 28 23 22 21 16 15 10 9 5 4 0
2057 * +----+-----+-------------+---+------+------+------+------+
2058 * | sf | opc | 1 0 0 1 0 0 | N | immr | imms | Rn | Rd |
2059 * +----+-----+-------------+---+------+------+------+------+
2061 static void disas_logic_imm(DisasContext *s, uint32_t insn)
2063 unsigned int sf, opc, is_n, immr, imms, rn, rd;
2064 TCGv_i64 tcg_rd, tcg_rn;
2066 bool is_and = false;
2068 sf = extract32(insn, 31, 1);
2069 opc = extract32(insn, 29, 2);
2070 is_n = extract32(insn, 22, 1);
2071 immr = extract32(insn, 16, 6);
2072 imms = extract32(insn, 10, 6);
2073 rn = extract32(insn, 5, 5);
2074 rd = extract32(insn, 0, 5);
2077 unallocated_encoding(s);
2081 if (opc == 0x3) { /* ANDS */
2082 tcg_rd = cpu_reg(s, rd);
2084 tcg_rd = cpu_reg_sp(s, rd);
2086 tcg_rn = cpu_reg(s, rn);
2088 if (!logic_imm_decode_wmask(&wmask, is_n, imms, immr)) {
2089 /* some immediate field values are reserved */
2090 unallocated_encoding(s);
2095 wmask &= 0xffffffff;
2099 case 0x3: /* ANDS */
2101 tcg_gen_andi_i64(tcg_rd, tcg_rn, wmask);
2105 tcg_gen_ori_i64(tcg_rd, tcg_rn, wmask);
2108 tcg_gen_xori_i64(tcg_rd, tcg_rn, wmask);
2111 assert(FALSE); /* must handle all above */
2115 if (!sf && !is_and) {
2116 /* zero extend final result; we know we can skip this for AND
2117 * since the immediate had the high 32 bits clear.
2119 tcg_gen_ext32u_i64(tcg_rd, tcg_rd);
2122 if (opc == 3) { /* ANDS */
2123 gen_logic_CC(sf, tcg_rd);
2128 * C3.4.5 Move wide (immediate)
2130 * 31 30 29 28 23 22 21 20 5 4 0
2131 * +--+-----+-------------+-----+----------------+------+
2132 * |sf| opc | 1 0 0 1 0 1 | hw | imm16 | Rd |
2133 * +--+-----+-------------+-----+----------------+------+
2135 * sf: 0 -> 32 bit, 1 -> 64 bit
2136 * opc: 00 -> N, 10 -> Z, 11 -> K
2137 * hw: shift/16 (0,16, and sf only 32, 48)
2139 static void disas_movw_imm(DisasContext *s, uint32_t insn)
2141 int rd = extract32(insn, 0, 5);
2142 uint64_t imm = extract32(insn, 5, 16);
2143 int sf = extract32(insn, 31, 1);
2144 int opc = extract32(insn, 29, 2);
2145 int pos = extract32(insn, 21, 2) << 4;
2146 TCGv_i64 tcg_rd = cpu_reg(s, rd);
2149 if (!sf && (pos >= 32)) {
2150 unallocated_encoding(s);
2164 tcg_gen_movi_i64(tcg_rd, imm);
2167 tcg_imm = tcg_const_i64(imm);
2168 tcg_gen_deposit_i64(tcg_rd, tcg_rd, tcg_imm, pos, 16);
2169 tcg_temp_free_i64(tcg_imm);
2171 tcg_gen_ext32u_i64(tcg_rd, tcg_rd);
2175 unallocated_encoding(s);
2181 * 31 30 29 28 23 22 21 16 15 10 9 5 4 0
2182 * +----+-----+-------------+---+------+------+------+------+
2183 * | sf | opc | 1 0 0 1 1 0 | N | immr | imms | Rn | Rd |
2184 * +----+-----+-------------+---+------+------+------+------+
2186 static void disas_bitfield(DisasContext *s, uint32_t insn)
2188 unsigned int sf, n, opc, ri, si, rn, rd, bitsize, pos, len;
2189 TCGv_i64 tcg_rd, tcg_tmp;
2191 sf = extract32(insn, 31, 1);
2192 opc = extract32(insn, 29, 2);
2193 n = extract32(insn, 22, 1);
2194 ri = extract32(insn, 16, 6);
2195 si = extract32(insn, 10, 6);
2196 rn = extract32(insn, 5, 5);
2197 rd = extract32(insn, 0, 5);
2198 bitsize = sf ? 64 : 32;
2200 if (sf != n || ri >= bitsize || si >= bitsize || opc > 2) {
2201 unallocated_encoding(s);
2205 tcg_rd = cpu_reg(s, rd);
2206 tcg_tmp = read_cpu_reg(s, rn, sf);
2208 /* OPTME: probably worth recognizing common cases of ext{8,16,32}{u,s} */
2210 if (opc != 1) { /* SBFM or UBFM */
2211 tcg_gen_movi_i64(tcg_rd, 0);
2214 /* do the bit move operation */
2216 /* Wd<s-r:0> = Wn<s:r> */
2217 tcg_gen_shri_i64(tcg_tmp, tcg_tmp, ri);
2219 len = (si - ri) + 1;
2221 /* Wd<32+s-r,32-r> = Wn<s:0> */
2226 tcg_gen_deposit_i64(tcg_rd, tcg_rd, tcg_tmp, pos, len);
2228 if (opc == 0) { /* SBFM - sign extend the destination field */
2229 tcg_gen_shli_i64(tcg_rd, tcg_rd, 64 - (pos + len));
2230 tcg_gen_sari_i64(tcg_rd, tcg_rd, 64 - (pos + len));
2233 if (!sf) { /* zero extend final result */
2234 tcg_gen_ext32u_i64(tcg_rd, tcg_rd);
2239 * 31 30 29 28 23 22 21 20 16 15 10 9 5 4 0
2240 * +----+------+-------------+---+----+------+--------+------+------+
2241 * | sf | op21 | 1 0 0 1 1 1 | N | o0 | Rm | imms | Rn | Rd |
2242 * +----+------+-------------+---+----+------+--------+------+------+
2244 static void disas_extract(DisasContext *s, uint32_t insn)
2246 unsigned int sf, n, rm, imm, rn, rd, bitsize, op21, op0;
2248 sf = extract32(insn, 31, 1);
2249 n = extract32(insn, 22, 1);
2250 rm = extract32(insn, 16, 5);
2251 imm = extract32(insn, 10, 6);
2252 rn = extract32(insn, 5, 5);
2253 rd = extract32(insn, 0, 5);
2254 op21 = extract32(insn, 29, 2);
2255 op0 = extract32(insn, 21, 1);
2256 bitsize = sf ? 64 : 32;
2258 if (sf != n || op21 || op0 || imm >= bitsize) {
2259 unallocated_encoding(s);
2261 TCGv_i64 tcg_rd, tcg_rm, tcg_rn;
2263 tcg_rd = cpu_reg(s, rd);
2266 /* OPTME: we can special case rm==rn as a rotate */
2267 tcg_rm = read_cpu_reg(s, rm, sf);
2268 tcg_rn = read_cpu_reg(s, rn, sf);
2269 tcg_gen_shri_i64(tcg_rm, tcg_rm, imm);
2270 tcg_gen_shli_i64(tcg_rn, tcg_rn, bitsize - imm);
2271 tcg_gen_or_i64(tcg_rd, tcg_rm, tcg_rn);
2273 tcg_gen_ext32u_i64(tcg_rd, tcg_rd);
2276 /* tcg shl_i32/shl_i64 is undefined for 32/64 bit shifts,
2277 * so an extract from bit 0 is a special case.
2280 tcg_gen_mov_i64(tcg_rd, cpu_reg(s, rm));
2282 tcg_gen_ext32u_i64(tcg_rd, cpu_reg(s, rm));
2289 /* C3.4 Data processing - immediate */
2290 static void disas_data_proc_imm(DisasContext *s, uint32_t insn)
2292 switch (extract32(insn, 23, 6)) {
2293 case 0x20: case 0x21: /* PC-rel. addressing */
2294 disas_pc_rel_adr(s, insn);
2296 case 0x22: case 0x23: /* Add/subtract (immediate) */
2297 disas_add_sub_imm(s, insn);
2299 case 0x24: /* Logical (immediate) */
2300 disas_logic_imm(s, insn);
2302 case 0x25: /* Move wide (immediate) */
2303 disas_movw_imm(s, insn);
2305 case 0x26: /* Bitfield */
2306 disas_bitfield(s, insn);
2308 case 0x27: /* Extract */
2309 disas_extract(s, insn);
2312 unallocated_encoding(s);
2317 /* Shift a TCGv src by TCGv shift_amount, put result in dst.
2318 * Note that it is the caller's responsibility to ensure that the
2319 * shift amount is in range (ie 0..31 or 0..63) and provide the ARM
2320 * mandated semantics for out of range shifts.
2322 static void shift_reg(TCGv_i64 dst, TCGv_i64 src, int sf,
2323 enum a64_shift_type shift_type, TCGv_i64 shift_amount)
2325 switch (shift_type) {
2326 case A64_SHIFT_TYPE_LSL:
2327 tcg_gen_shl_i64(dst, src, shift_amount);
2329 case A64_SHIFT_TYPE_LSR:
2330 tcg_gen_shr_i64(dst, src, shift_amount);
2332 case A64_SHIFT_TYPE_ASR:
2334 tcg_gen_ext32s_i64(dst, src);
2336 tcg_gen_sar_i64(dst, sf ? src : dst, shift_amount);
2338 case A64_SHIFT_TYPE_ROR:
2340 tcg_gen_rotr_i64(dst, src, shift_amount);
2343 t0 = tcg_temp_new_i32();
2344 t1 = tcg_temp_new_i32();
2345 tcg_gen_trunc_i64_i32(t0, src);
2346 tcg_gen_trunc_i64_i32(t1, shift_amount);
2347 tcg_gen_rotr_i32(t0, t0, t1);
2348 tcg_gen_extu_i32_i64(dst, t0);
2349 tcg_temp_free_i32(t0);
2350 tcg_temp_free_i32(t1);
2354 assert(FALSE); /* all shift types should be handled */
2358 if (!sf) { /* zero extend final result */
2359 tcg_gen_ext32u_i64(dst, dst);
2363 /* Shift a TCGv src by immediate, put result in dst.
2364 * The shift amount must be in range (this should always be true as the
2365 * relevant instructions will UNDEF on bad shift immediates).
2367 static void shift_reg_imm(TCGv_i64 dst, TCGv_i64 src, int sf,
2368 enum a64_shift_type shift_type, unsigned int shift_i)
2370 assert(shift_i < (sf ? 64 : 32));
2373 tcg_gen_mov_i64(dst, src);
2375 TCGv_i64 shift_const;
2377 shift_const = tcg_const_i64(shift_i);
2378 shift_reg(dst, src, sf, shift_type, shift_const);
2379 tcg_temp_free_i64(shift_const);
2383 /* C3.5.10 Logical (shifted register)
2384 * 31 30 29 28 24 23 22 21 20 16 15 10 9 5 4 0
2385 * +----+-----+-----------+-------+---+------+--------+------+------+
2386 * | sf | opc | 0 1 0 1 0 | shift | N | Rm | imm6 | Rn | Rd |
2387 * +----+-----+-----------+-------+---+------+--------+------+------+
2389 static void disas_logic_reg(DisasContext *s, uint32_t insn)
2391 TCGv_i64 tcg_rd, tcg_rn, tcg_rm;
2392 unsigned int sf, opc, shift_type, invert, rm, shift_amount, rn, rd;
2394 sf = extract32(insn, 31, 1);
2395 opc = extract32(insn, 29, 2);
2396 shift_type = extract32(insn, 22, 2);
2397 invert = extract32(insn, 21, 1);
2398 rm = extract32(insn, 16, 5);
2399 shift_amount = extract32(insn, 10, 6);
2400 rn = extract32(insn, 5, 5);
2401 rd = extract32(insn, 0, 5);
2403 if (!sf && (shift_amount & (1 << 5))) {
2404 unallocated_encoding(s);
2408 tcg_rd = cpu_reg(s, rd);
2410 if (opc == 1 && shift_amount == 0 && shift_type == 0 && rn == 31) {
2411 /* Unshifted ORR and ORN with WZR/XZR is the standard encoding for
2412 * register-register MOV and MVN, so it is worth special casing.
2414 tcg_rm = cpu_reg(s, rm);
2416 tcg_gen_not_i64(tcg_rd, tcg_rm);
2418 tcg_gen_ext32u_i64(tcg_rd, tcg_rd);
2422 tcg_gen_mov_i64(tcg_rd, tcg_rm);
2424 tcg_gen_ext32u_i64(tcg_rd, tcg_rm);
2430 tcg_rm = read_cpu_reg(s, rm, sf);
2433 shift_reg_imm(tcg_rm, tcg_rm, sf, shift_type, shift_amount);
2436 tcg_rn = cpu_reg(s, rn);
2438 switch (opc | (invert << 2)) {
2441 tcg_gen_and_i64(tcg_rd, tcg_rn, tcg_rm);
2444 tcg_gen_or_i64(tcg_rd, tcg_rn, tcg_rm);
2447 tcg_gen_xor_i64(tcg_rd, tcg_rn, tcg_rm);
2451 tcg_gen_andc_i64(tcg_rd, tcg_rn, tcg_rm);
2454 tcg_gen_orc_i64(tcg_rd, tcg_rn, tcg_rm);
2457 tcg_gen_eqv_i64(tcg_rd, tcg_rn, tcg_rm);
2465 tcg_gen_ext32u_i64(tcg_rd, tcg_rd);
2469 gen_logic_CC(sf, tcg_rd);
2474 * C3.5.1 Add/subtract (extended register)
2476 * 31|30|29|28 24|23 22|21|20 16|15 13|12 10|9 5|4 0|
2477 * +--+--+--+-----------+-----+--+-------+------+------+----+----+
2478 * |sf|op| S| 0 1 0 1 1 | opt | 1| Rm |option| imm3 | Rn | Rd |
2479 * +--+--+--+-----------+-----+--+-------+------+------+----+----+
2481 * sf: 0 -> 32bit, 1 -> 64bit
2482 * op: 0 -> add , 1 -> sub
2485 * option: extension type (see DecodeRegExtend)
2486 * imm3: optional shift to Rm
2488 * Rd = Rn + LSL(extend(Rm), amount)
2490 static void disas_add_sub_ext_reg(DisasContext *s, uint32_t insn)
2492 int rd = extract32(insn, 0, 5);
2493 int rn = extract32(insn, 5, 5);
2494 int imm3 = extract32(insn, 10, 3);
2495 int option = extract32(insn, 13, 3);
2496 int rm = extract32(insn, 16, 5);
2497 bool setflags = extract32(insn, 29, 1);
2498 bool sub_op = extract32(insn, 30, 1);
2499 bool sf = extract32(insn, 31, 1);
2501 TCGv_i64 tcg_rm, tcg_rn; /* temps */
2503 TCGv_i64 tcg_result;
2506 unallocated_encoding(s);
2510 /* non-flag setting ops may use SP */
2512 tcg_rn = read_cpu_reg_sp(s, rn, sf);
2513 tcg_rd = cpu_reg_sp(s, rd);
2515 tcg_rn = read_cpu_reg(s, rn, sf);
2516 tcg_rd = cpu_reg(s, rd);
2519 tcg_rm = read_cpu_reg(s, rm, sf);
2520 ext_and_shift_reg(tcg_rm, tcg_rm, option, imm3);
2522 tcg_result = tcg_temp_new_i64();
2526 tcg_gen_sub_i64(tcg_result, tcg_rn, tcg_rm);
2528 tcg_gen_add_i64(tcg_result, tcg_rn, tcg_rm);
2532 gen_sub_CC(sf, tcg_result, tcg_rn, tcg_rm);
2534 gen_add_CC(sf, tcg_result, tcg_rn, tcg_rm);
2539 tcg_gen_mov_i64(tcg_rd, tcg_result);
2541 tcg_gen_ext32u_i64(tcg_rd, tcg_result);
2544 tcg_temp_free_i64(tcg_result);
2548 * C3.5.2 Add/subtract (shifted register)
2550 * 31 30 29 28 24 23 22 21 20 16 15 10 9 5 4 0
2551 * +--+--+--+-----------+-----+--+-------+---------+------+------+
2552 * |sf|op| S| 0 1 0 1 1 |shift| 0| Rm | imm6 | Rn | Rd |
2553 * +--+--+--+-----------+-----+--+-------+---------+------+------+
2555 * sf: 0 -> 32bit, 1 -> 64bit
2556 * op: 0 -> add , 1 -> sub
2558 * shift: 00 -> LSL, 01 -> LSR, 10 -> ASR, 11 -> RESERVED
2559 * imm6: Shift amount to apply to Rm before the add/sub
2561 static void disas_add_sub_reg(DisasContext *s, uint32_t insn)
2563 int rd = extract32(insn, 0, 5);
2564 int rn = extract32(insn, 5, 5);
2565 int imm6 = extract32(insn, 10, 6);
2566 int rm = extract32(insn, 16, 5);
2567 int shift_type = extract32(insn, 22, 2);
2568 bool setflags = extract32(insn, 29, 1);
2569 bool sub_op = extract32(insn, 30, 1);
2570 bool sf = extract32(insn, 31, 1);
2572 TCGv_i64 tcg_rd = cpu_reg(s, rd);
2573 TCGv_i64 tcg_rn, tcg_rm;
2574 TCGv_i64 tcg_result;
2576 if ((shift_type == 3) || (!sf && (imm6 > 31))) {
2577 unallocated_encoding(s);
2581 tcg_rn = read_cpu_reg(s, rn, sf);
2582 tcg_rm = read_cpu_reg(s, rm, sf);
2584 shift_reg_imm(tcg_rm, tcg_rm, sf, shift_type, imm6);
2586 tcg_result = tcg_temp_new_i64();
2590 tcg_gen_sub_i64(tcg_result, tcg_rn, tcg_rm);
2592 tcg_gen_add_i64(tcg_result, tcg_rn, tcg_rm);
2596 gen_sub_CC(sf, tcg_result, tcg_rn, tcg_rm);
2598 gen_add_CC(sf, tcg_result, tcg_rn, tcg_rm);
2603 tcg_gen_mov_i64(tcg_rd, tcg_result);
2605 tcg_gen_ext32u_i64(tcg_rd, tcg_result);
2608 tcg_temp_free_i64(tcg_result);
2611 /* C3.5.9 Data-processing (3 source)
2613 31 30 29 28 24 23 21 20 16 15 14 10 9 5 4 0
2614 +--+------+-----------+------+------+----+------+------+------+
2615 |sf| op54 | 1 1 0 1 1 | op31 | Rm | o0 | Ra | Rn | Rd |
2616 +--+------+-----------+------+------+----+------+------+------+
2619 static void disas_data_proc_3src(DisasContext *s, uint32_t insn)
2621 int rd = extract32(insn, 0, 5);
2622 int rn = extract32(insn, 5, 5);
2623 int ra = extract32(insn, 10, 5);
2624 int rm = extract32(insn, 16, 5);
2625 int op_id = (extract32(insn, 29, 3) << 4) |
2626 (extract32(insn, 21, 3) << 1) |
2627 extract32(insn, 15, 1);
2628 bool sf = extract32(insn, 31, 1);
2629 bool is_sub = extract32(op_id, 0, 1);
2630 bool is_high = extract32(op_id, 2, 1);
2631 bool is_signed = false;
2636 /* Note that op_id is sf:op54:op31:o0 so it includes the 32/64 size flag */
2638 case 0x42: /* SMADDL */
2639 case 0x43: /* SMSUBL */
2640 case 0x44: /* SMULH */
2643 case 0x0: /* MADD (32bit) */
2644 case 0x1: /* MSUB (32bit) */
2645 case 0x40: /* MADD (64bit) */
2646 case 0x41: /* MSUB (64bit) */
2647 case 0x4a: /* UMADDL */
2648 case 0x4b: /* UMSUBL */
2649 case 0x4c: /* UMULH */
2652 unallocated_encoding(s);
2657 TCGv_i64 low_bits = tcg_temp_new_i64(); /* low bits discarded */
2658 TCGv_i64 tcg_rd = cpu_reg(s, rd);
2659 TCGv_i64 tcg_rn = cpu_reg(s, rn);
2660 TCGv_i64 tcg_rm = cpu_reg(s, rm);
2663 tcg_gen_muls2_i64(low_bits, tcg_rd, tcg_rn, tcg_rm);
2665 tcg_gen_mulu2_i64(low_bits, tcg_rd, tcg_rn, tcg_rm);
2668 tcg_temp_free_i64(low_bits);
2672 tcg_op1 = tcg_temp_new_i64();
2673 tcg_op2 = tcg_temp_new_i64();
2674 tcg_tmp = tcg_temp_new_i64();
2677 tcg_gen_mov_i64(tcg_op1, cpu_reg(s, rn));
2678 tcg_gen_mov_i64(tcg_op2, cpu_reg(s, rm));
2681 tcg_gen_ext32s_i64(tcg_op1, cpu_reg(s, rn));
2682 tcg_gen_ext32s_i64(tcg_op2, cpu_reg(s, rm));
2684 tcg_gen_ext32u_i64(tcg_op1, cpu_reg(s, rn));
2685 tcg_gen_ext32u_i64(tcg_op2, cpu_reg(s, rm));
2689 if (ra == 31 && !is_sub) {
2690 /* Special-case MADD with rA == XZR; it is the standard MUL alias */
2691 tcg_gen_mul_i64(cpu_reg(s, rd), tcg_op1, tcg_op2);
2693 tcg_gen_mul_i64(tcg_tmp, tcg_op1, tcg_op2);
2695 tcg_gen_sub_i64(cpu_reg(s, rd), cpu_reg(s, ra), tcg_tmp);
2697 tcg_gen_add_i64(cpu_reg(s, rd), cpu_reg(s, ra), tcg_tmp);
2702 tcg_gen_ext32u_i64(cpu_reg(s, rd), cpu_reg(s, rd));
2705 tcg_temp_free_i64(tcg_op1);
2706 tcg_temp_free_i64(tcg_op2);
2707 tcg_temp_free_i64(tcg_tmp);
2710 /* C3.5.3 - Add/subtract (with carry)
2711 * 31 30 29 28 27 26 25 24 23 22 21 20 16 15 10 9 5 4 0
2712 * +--+--+--+------------------------+------+---------+------+-----+
2713 * |sf|op| S| 1 1 0 1 0 0 0 0 | rm | opcode2 | Rn | Rd |
2714 * +--+--+--+------------------------+------+---------+------+-----+
2718 static void disas_adc_sbc(DisasContext *s, uint32_t insn)
2720 unsigned int sf, op, setflags, rm, rn, rd;
2721 TCGv_i64 tcg_y, tcg_rn, tcg_rd;
2723 if (extract32(insn, 10, 6) != 0) {
2724 unallocated_encoding(s);
2728 sf = extract32(insn, 31, 1);
2729 op = extract32(insn, 30, 1);
2730 setflags = extract32(insn, 29, 1);
2731 rm = extract32(insn, 16, 5);
2732 rn = extract32(insn, 5, 5);
2733 rd = extract32(insn, 0, 5);
2735 tcg_rd = cpu_reg(s, rd);
2736 tcg_rn = cpu_reg(s, rn);
2739 tcg_y = new_tmp_a64(s);
2740 tcg_gen_not_i64(tcg_y, cpu_reg(s, rm));
2742 tcg_y = cpu_reg(s, rm);
2746 gen_adc_CC(sf, tcg_rd, tcg_rn, tcg_y);
2748 gen_adc(sf, tcg_rd, tcg_rn, tcg_y);
2752 /* C3.5.4 - C3.5.5 Conditional compare (immediate / register)
2753 * 31 30 29 28 27 26 25 24 23 22 21 20 16 15 12 11 10 9 5 4 3 0
2754 * +--+--+--+------------------------+--------+------+----+--+------+--+-----+
2755 * |sf|op| S| 1 1 0 1 0 0 1 0 |imm5/rm | cond |i/r |o2| Rn |o3|nzcv |
2756 * +--+--+--+------------------------+--------+------+----+--+------+--+-----+
2759 static void disas_cc(DisasContext *s, uint32_t insn)
2761 unsigned int sf, op, y, cond, rn, nzcv, is_imm;
2762 int label_continue = -1;
2763 TCGv_i64 tcg_tmp, tcg_y, tcg_rn;
2765 if (!extract32(insn, 29, 1)) {
2766 unallocated_encoding(s);
2769 if (insn & (1 << 10 | 1 << 4)) {
2770 unallocated_encoding(s);
2773 sf = extract32(insn, 31, 1);
2774 op = extract32(insn, 30, 1);
2775 is_imm = extract32(insn, 11, 1);
2776 y = extract32(insn, 16, 5); /* y = rm (reg) or imm5 (imm) */
2777 cond = extract32(insn, 12, 4);
2778 rn = extract32(insn, 5, 5);
2779 nzcv = extract32(insn, 0, 4);
2781 if (cond < 0x0e) { /* not always */
2782 int label_match = gen_new_label();
2783 label_continue = gen_new_label();
2784 arm_gen_test_cc(cond, label_match);
2786 tcg_tmp = tcg_temp_new_i64();
2787 tcg_gen_movi_i64(tcg_tmp, nzcv << 28);
2788 gen_set_nzcv(tcg_tmp);
2789 tcg_temp_free_i64(tcg_tmp);
2790 tcg_gen_br(label_continue);
2791 gen_set_label(label_match);
2793 /* match, or condition is always */
2795 tcg_y = new_tmp_a64(s);
2796 tcg_gen_movi_i64(tcg_y, y);
2798 tcg_y = cpu_reg(s, y);
2800 tcg_rn = cpu_reg(s, rn);
2802 tcg_tmp = tcg_temp_new_i64();
2804 gen_sub_CC(sf, tcg_tmp, tcg_rn, tcg_y);
2806 gen_add_CC(sf, tcg_tmp, tcg_rn, tcg_y);
2808 tcg_temp_free_i64(tcg_tmp);
2810 if (cond < 0x0e) { /* continue */
2811 gen_set_label(label_continue);
2815 /* C3.5.6 Conditional select
2816 * 31 30 29 28 21 20 16 15 12 11 10 9 5 4 0
2817 * +----+----+---+-----------------+------+------+-----+------+------+
2818 * | sf | op | S | 1 1 0 1 0 1 0 0 | Rm | cond | op2 | Rn | Rd |
2819 * +----+----+---+-----------------+------+------+-----+------+------+
2821 static void disas_cond_select(DisasContext *s, uint32_t insn)
2823 unsigned int sf, else_inv, rm, cond, else_inc, rn, rd;
2824 TCGv_i64 tcg_rd, tcg_src;
2826 if (extract32(insn, 29, 1) || extract32(insn, 11, 1)) {
2827 /* S == 1 or op2<1> == 1 */
2828 unallocated_encoding(s);
2831 sf = extract32(insn, 31, 1);
2832 else_inv = extract32(insn, 30, 1);
2833 rm = extract32(insn, 16, 5);
2834 cond = extract32(insn, 12, 4);
2835 else_inc = extract32(insn, 10, 1);
2836 rn = extract32(insn, 5, 5);
2837 rd = extract32(insn, 0, 5);
2840 /* silly no-op write; until we use movcond we must special-case
2841 * this to avoid a dead temporary across basic blocks.
2846 tcg_rd = cpu_reg(s, rd);
2848 if (cond >= 0x0e) { /* condition "always" */
2849 tcg_src = read_cpu_reg(s, rn, sf);
2850 tcg_gen_mov_i64(tcg_rd, tcg_src);
2852 /* OPTME: we could use movcond here, at the cost of duplicating
2853 * a lot of the arm_gen_test_cc() logic.
2855 int label_match = gen_new_label();
2856 int label_continue = gen_new_label();
2858 arm_gen_test_cc(cond, label_match);
2860 tcg_src = cpu_reg(s, rm);
2862 if (else_inv && else_inc) {
2863 tcg_gen_neg_i64(tcg_rd, tcg_src);
2864 } else if (else_inv) {
2865 tcg_gen_not_i64(tcg_rd, tcg_src);
2866 } else if (else_inc) {
2867 tcg_gen_addi_i64(tcg_rd, tcg_src, 1);
2869 tcg_gen_mov_i64(tcg_rd, tcg_src);
2872 tcg_gen_ext32u_i64(tcg_rd, tcg_rd);
2874 tcg_gen_br(label_continue);
2876 gen_set_label(label_match);
2877 tcg_src = read_cpu_reg(s, rn, sf);
2878 tcg_gen_mov_i64(tcg_rd, tcg_src);
2880 gen_set_label(label_continue);
2884 static void handle_clz(DisasContext *s, unsigned int sf,
2885 unsigned int rn, unsigned int rd)
2887 TCGv_i64 tcg_rd, tcg_rn;
2888 tcg_rd = cpu_reg(s, rd);
2889 tcg_rn = cpu_reg(s, rn);
2892 gen_helper_clz64(tcg_rd, tcg_rn);
2894 TCGv_i32 tcg_tmp32 = tcg_temp_new_i32();
2895 tcg_gen_trunc_i64_i32(tcg_tmp32, tcg_rn);
2896 gen_helper_clz(tcg_tmp32, tcg_tmp32);
2897 tcg_gen_extu_i32_i64(tcg_rd, tcg_tmp32);
2898 tcg_temp_free_i32(tcg_tmp32);
2902 static void handle_cls(DisasContext *s, unsigned int sf,
2903 unsigned int rn, unsigned int rd)
2905 TCGv_i64 tcg_rd, tcg_rn;
2906 tcg_rd = cpu_reg(s, rd);
2907 tcg_rn = cpu_reg(s, rn);
2910 gen_helper_cls64(tcg_rd, tcg_rn);
2912 TCGv_i32 tcg_tmp32 = tcg_temp_new_i32();
2913 tcg_gen_trunc_i64_i32(tcg_tmp32, tcg_rn);
2914 gen_helper_cls32(tcg_tmp32, tcg_tmp32);
2915 tcg_gen_extu_i32_i64(tcg_rd, tcg_tmp32);
2916 tcg_temp_free_i32(tcg_tmp32);
2920 static void handle_rbit(DisasContext *s, unsigned int sf,
2921 unsigned int rn, unsigned int rd)
2923 TCGv_i64 tcg_rd, tcg_rn;
2924 tcg_rd = cpu_reg(s, rd);
2925 tcg_rn = cpu_reg(s, rn);
2928 gen_helper_rbit64(tcg_rd, tcg_rn);
2930 TCGv_i32 tcg_tmp32 = tcg_temp_new_i32();
2931 tcg_gen_trunc_i64_i32(tcg_tmp32, tcg_rn);
2932 gen_helper_rbit(tcg_tmp32, tcg_tmp32);
2933 tcg_gen_extu_i32_i64(tcg_rd, tcg_tmp32);
2934 tcg_temp_free_i32(tcg_tmp32);
2938 /* C5.6.149 REV with sf==1, opcode==3 ("REV64") */
2939 static void handle_rev64(DisasContext *s, unsigned int sf,
2940 unsigned int rn, unsigned int rd)
2943 unallocated_encoding(s);
2946 tcg_gen_bswap64_i64(cpu_reg(s, rd), cpu_reg(s, rn));
2949 /* C5.6.149 REV with sf==0, opcode==2
2950 * C5.6.151 REV32 (sf==1, opcode==2)
2952 static void handle_rev32(DisasContext *s, unsigned int sf,
2953 unsigned int rn, unsigned int rd)
2955 TCGv_i64 tcg_rd = cpu_reg(s, rd);
2958 TCGv_i64 tcg_tmp = tcg_temp_new_i64();
2959 TCGv_i64 tcg_rn = read_cpu_reg(s, rn, sf);
2961 /* bswap32_i64 requires zero high word */
2962 tcg_gen_ext32u_i64(tcg_tmp, tcg_rn);
2963 tcg_gen_bswap32_i64(tcg_rd, tcg_tmp);
2964 tcg_gen_shri_i64(tcg_tmp, tcg_rn, 32);
2965 tcg_gen_bswap32_i64(tcg_tmp, tcg_tmp);
2966 tcg_gen_concat32_i64(tcg_rd, tcg_rd, tcg_tmp);
2968 tcg_temp_free_i64(tcg_tmp);
2970 tcg_gen_ext32u_i64(tcg_rd, cpu_reg(s, rn));
2971 tcg_gen_bswap32_i64(tcg_rd, tcg_rd);
2975 /* C5.6.150 REV16 (opcode==1) */
2976 static void handle_rev16(DisasContext *s, unsigned int sf,
2977 unsigned int rn, unsigned int rd)
2979 TCGv_i64 tcg_rd = cpu_reg(s, rd);
2980 TCGv_i64 tcg_tmp = tcg_temp_new_i64();
2981 TCGv_i64 tcg_rn = read_cpu_reg(s, rn, sf);
2983 tcg_gen_andi_i64(tcg_tmp, tcg_rn, 0xffff);
2984 tcg_gen_bswap16_i64(tcg_rd, tcg_tmp);
2986 tcg_gen_shri_i64(tcg_tmp, tcg_rn, 16);
2987 tcg_gen_andi_i64(tcg_tmp, tcg_tmp, 0xffff);
2988 tcg_gen_bswap16_i64(tcg_tmp, tcg_tmp);
2989 tcg_gen_deposit_i64(tcg_rd, tcg_rd, tcg_tmp, 16, 16);
2992 tcg_gen_shri_i64(tcg_tmp, tcg_rn, 32);
2993 tcg_gen_andi_i64(tcg_tmp, tcg_tmp, 0xffff);
2994 tcg_gen_bswap16_i64(tcg_tmp, tcg_tmp);
2995 tcg_gen_deposit_i64(tcg_rd, tcg_rd, tcg_tmp, 32, 16);
2997 tcg_gen_shri_i64(tcg_tmp, tcg_rn, 48);
2998 tcg_gen_bswap16_i64(tcg_tmp, tcg_tmp);
2999 tcg_gen_deposit_i64(tcg_rd, tcg_rd, tcg_tmp, 48, 16);
3002 tcg_temp_free_i64(tcg_tmp);
3005 /* C3.5.7 Data-processing (1 source)
3006 * 31 30 29 28 21 20 16 15 10 9 5 4 0
3007 * +----+---+---+-----------------+---------+--------+------+------+
3008 * | sf | 1 | S | 1 1 0 1 0 1 1 0 | opcode2 | opcode | Rn | Rd |
3009 * +----+---+---+-----------------+---------+--------+------+------+
3011 static void disas_data_proc_1src(DisasContext *s, uint32_t insn)
3013 unsigned int sf, opcode, rn, rd;
3015 if (extract32(insn, 29, 1) || extract32(insn, 16, 5)) {
3016 unallocated_encoding(s);
3020 sf = extract32(insn, 31, 1);
3021 opcode = extract32(insn, 10, 6);
3022 rn = extract32(insn, 5, 5);
3023 rd = extract32(insn, 0, 5);
3027 handle_rbit(s, sf, rn, rd);
3030 handle_rev16(s, sf, rn, rd);
3033 handle_rev32(s, sf, rn, rd);
3036 handle_rev64(s, sf, rn, rd);
3039 handle_clz(s, sf, rn, rd);
3042 handle_cls(s, sf, rn, rd);
3047 static void handle_div(DisasContext *s, bool is_signed, unsigned int sf,
3048 unsigned int rm, unsigned int rn, unsigned int rd)
3050 TCGv_i64 tcg_n, tcg_m, tcg_rd;
3051 tcg_rd = cpu_reg(s, rd);
3053 if (!sf && is_signed) {
3054 tcg_n = new_tmp_a64(s);
3055 tcg_m = new_tmp_a64(s);
3056 tcg_gen_ext32s_i64(tcg_n, cpu_reg(s, rn));
3057 tcg_gen_ext32s_i64(tcg_m, cpu_reg(s, rm));
3059 tcg_n = read_cpu_reg(s, rn, sf);
3060 tcg_m = read_cpu_reg(s, rm, sf);
3064 gen_helper_sdiv64(tcg_rd, tcg_n, tcg_m);
3066 gen_helper_udiv64(tcg_rd, tcg_n, tcg_m);
3069 if (!sf) { /* zero extend final result */
3070 tcg_gen_ext32u_i64(tcg_rd, tcg_rd);
3074 /* C5.6.115 LSLV, C5.6.118 LSRV, C5.6.17 ASRV, C5.6.154 RORV */
3075 static void handle_shift_reg(DisasContext *s,
3076 enum a64_shift_type shift_type, unsigned int sf,
3077 unsigned int rm, unsigned int rn, unsigned int rd)
3079 TCGv_i64 tcg_shift = tcg_temp_new_i64();
3080 TCGv_i64 tcg_rd = cpu_reg(s, rd);
3081 TCGv_i64 tcg_rn = read_cpu_reg(s, rn, sf);
3083 tcg_gen_andi_i64(tcg_shift, cpu_reg(s, rm), sf ? 63 : 31);
3084 shift_reg(tcg_rd, tcg_rn, sf, shift_type, tcg_shift);
3085 tcg_temp_free_i64(tcg_shift);
3088 /* C3.5.8 Data-processing (2 source)
3089 * 31 30 29 28 21 20 16 15 10 9 5 4 0
3090 * +----+---+---+-----------------+------+--------+------+------+
3091 * | sf | 0 | S | 1 1 0 1 0 1 1 0 | Rm | opcode | Rn | Rd |
3092 * +----+---+---+-----------------+------+--------+------+------+
3094 static void disas_data_proc_2src(DisasContext *s, uint32_t insn)
3096 unsigned int sf, rm, opcode, rn, rd;
3097 sf = extract32(insn, 31, 1);
3098 rm = extract32(insn, 16, 5);
3099 opcode = extract32(insn, 10, 6);
3100 rn = extract32(insn, 5, 5);
3101 rd = extract32(insn, 0, 5);
3103 if (extract32(insn, 29, 1)) {
3104 unallocated_encoding(s);
3110 handle_div(s, false, sf, rm, rn, rd);
3113 handle_div(s, true, sf, rm, rn, rd);
3116 handle_shift_reg(s, A64_SHIFT_TYPE_LSL, sf, rm, rn, rd);
3119 handle_shift_reg(s, A64_SHIFT_TYPE_LSR, sf, rm, rn, rd);
3122 handle_shift_reg(s, A64_SHIFT_TYPE_ASR, sf, rm, rn, rd);
3125 handle_shift_reg(s, A64_SHIFT_TYPE_ROR, sf, rm, rn, rd);
3134 case 23: /* CRC32 */
3135 unsupported_encoding(s, insn);
3138 unallocated_encoding(s);
3143 /* C3.5 Data processing - register */
3144 static void disas_data_proc_reg(DisasContext *s, uint32_t insn)
3146 switch (extract32(insn, 24, 5)) {
3147 case 0x0a: /* Logical (shifted register) */
3148 disas_logic_reg(s, insn);
3150 case 0x0b: /* Add/subtract */
3151 if (insn & (1 << 21)) { /* (extended register) */
3152 disas_add_sub_ext_reg(s, insn);
3154 disas_add_sub_reg(s, insn);
3157 case 0x1b: /* Data-processing (3 source) */
3158 disas_data_proc_3src(s, insn);
3161 switch (extract32(insn, 21, 3)) {
3162 case 0x0: /* Add/subtract (with carry) */
3163 disas_adc_sbc(s, insn);
3165 case 0x2: /* Conditional compare */
3166 disas_cc(s, insn); /* both imm and reg forms */
3168 case 0x4: /* Conditional select */
3169 disas_cond_select(s, insn);
3171 case 0x6: /* Data-processing */
3172 if (insn & (1 << 30)) { /* (1 source) */
3173 disas_data_proc_1src(s, insn);
3174 } else { /* (2 source) */
3175 disas_data_proc_2src(s, insn);
3179 unallocated_encoding(s);
3184 unallocated_encoding(s);
3189 /* Convert ARM rounding mode to softfloat */
3190 static inline int arm_rmode_to_sf(int rmode)
3193 case FPROUNDING_TIEAWAY:
3194 rmode = float_round_ties_away;
3196 case FPROUNDING_ODD:
3197 /* FIXME: add support for TIEAWAY and ODD */
3198 qemu_log_mask(LOG_UNIMP, "arm: unimplemented rounding mode: %d\n",
3200 case FPROUNDING_TIEEVEN:
3202 rmode = float_round_nearest_even;
3204 case FPROUNDING_POSINF:
3205 rmode = float_round_up;
3207 case FPROUNDING_NEGINF:
3208 rmode = float_round_down;
3210 case FPROUNDING_ZERO:
3211 rmode = float_round_to_zero;
3217 static void handle_fp_compare(DisasContext *s, bool is_double,
3218 unsigned int rn, unsigned int rm,
3219 bool cmp_with_zero, bool signal_all_nans)
3221 TCGv_i64 tcg_flags = tcg_temp_new_i64();
3222 TCGv_ptr fpst = get_fpstatus_ptr();
3225 TCGv_i64 tcg_vn, tcg_vm;
3227 tcg_vn = read_fp_dreg(s, rn);
3228 if (cmp_with_zero) {
3229 tcg_vm = tcg_const_i64(0);
3231 tcg_vm = read_fp_dreg(s, rm);
3233 if (signal_all_nans) {
3234 gen_helper_vfp_cmped_a64(tcg_flags, tcg_vn, tcg_vm, fpst);
3236 gen_helper_vfp_cmpd_a64(tcg_flags, tcg_vn, tcg_vm, fpst);
3238 tcg_temp_free_i64(tcg_vn);
3239 tcg_temp_free_i64(tcg_vm);
3241 TCGv_i32 tcg_vn, tcg_vm;
3243 tcg_vn = read_fp_sreg(s, rn);
3244 if (cmp_with_zero) {
3245 tcg_vm = tcg_const_i32(0);
3247 tcg_vm = read_fp_sreg(s, rm);
3249 if (signal_all_nans) {
3250 gen_helper_vfp_cmpes_a64(tcg_flags, tcg_vn, tcg_vm, fpst);
3252 gen_helper_vfp_cmps_a64(tcg_flags, tcg_vn, tcg_vm, fpst);
3254 tcg_temp_free_i32(tcg_vn);
3255 tcg_temp_free_i32(tcg_vm);
3258 tcg_temp_free_ptr(fpst);
3260 gen_set_nzcv(tcg_flags);
3262 tcg_temp_free_i64(tcg_flags);
3265 /* C3.6.22 Floating point compare
3266 * 31 30 29 28 24 23 22 21 20 16 15 14 13 10 9 5 4 0
3267 * +---+---+---+-----------+------+---+------+-----+---------+------+-------+
3268 * | M | 0 | S | 1 1 1 1 0 | type | 1 | Rm | op | 1 0 0 0 | Rn | op2 |
3269 * +---+---+---+-----------+------+---+------+-----+---------+------+-------+
3271 static void disas_fp_compare(DisasContext *s, uint32_t insn)
3273 unsigned int mos, type, rm, op, rn, opc, op2r;
3275 mos = extract32(insn, 29, 3);
3276 type = extract32(insn, 22, 2); /* 0 = single, 1 = double */
3277 rm = extract32(insn, 16, 5);
3278 op = extract32(insn, 14, 2);
3279 rn = extract32(insn, 5, 5);
3280 opc = extract32(insn, 3, 2);
3281 op2r = extract32(insn, 0, 3);
3283 if (mos || op || op2r || type > 1) {
3284 unallocated_encoding(s);
3288 handle_fp_compare(s, type, rn, rm, opc & 1, opc & 2);
3291 /* C3.6.23 Floating point conditional compare
3292 * 31 30 29 28 24 23 22 21 20 16 15 12 11 10 9 5 4 3 0
3293 * +---+---+---+-----------+------+---+------+------+-----+------+----+------+
3294 * | M | 0 | S | 1 1 1 1 0 | type | 1 | Rm | cond | 0 1 | Rn | op | nzcv |
3295 * +---+---+---+-----------+------+---+------+------+-----+------+----+------+
3297 static void disas_fp_ccomp(DisasContext *s, uint32_t insn)
3299 unsigned int mos, type, rm, cond, rn, op, nzcv;
3301 int label_continue = -1;
3303 mos = extract32(insn, 29, 3);
3304 type = extract32(insn, 22, 2); /* 0 = single, 1 = double */
3305 rm = extract32(insn, 16, 5);
3306 cond = extract32(insn, 12, 4);
3307 rn = extract32(insn, 5, 5);
3308 op = extract32(insn, 4, 1);
3309 nzcv = extract32(insn, 0, 4);
3311 if (mos || type > 1) {
3312 unallocated_encoding(s);
3316 if (cond < 0x0e) { /* not always */
3317 int label_match = gen_new_label();
3318 label_continue = gen_new_label();
3319 arm_gen_test_cc(cond, label_match);
3321 tcg_flags = tcg_const_i64(nzcv << 28);
3322 gen_set_nzcv(tcg_flags);
3323 tcg_temp_free_i64(tcg_flags);
3324 tcg_gen_br(label_continue);
3325 gen_set_label(label_match);
3328 handle_fp_compare(s, type, rn, rm, false, op);
3331 gen_set_label(label_continue);
3335 /* copy src FP register to dst FP register; type specifies single or double */
3336 static void gen_mov_fp2fp(DisasContext *s, int type, int dst, int src)
3339 TCGv_i64 v = read_fp_dreg(s, src);
3340 write_fp_dreg(s, dst, v);
3341 tcg_temp_free_i64(v);
3343 TCGv_i32 v = read_fp_sreg(s, src);
3344 write_fp_sreg(s, dst, v);
3345 tcg_temp_free_i32(v);
3349 /* C3.6.24 Floating point conditional select
3350 * 31 30 29 28 24 23 22 21 20 16 15 12 11 10 9 5 4 0
3351 * +---+---+---+-----------+------+---+------+------+-----+------+------+
3352 * | M | 0 | S | 1 1 1 1 0 | type | 1 | Rm | cond | 1 1 | Rn | Rd |
3353 * +---+---+---+-----------+------+---+------+------+-----+------+------+
3355 static void disas_fp_csel(DisasContext *s, uint32_t insn)
3357 unsigned int mos, type, rm, cond, rn, rd;
3358 int label_continue = -1;
3360 mos = extract32(insn, 29, 3);
3361 type = extract32(insn, 22, 2); /* 0 = single, 1 = double */
3362 rm = extract32(insn, 16, 5);
3363 cond = extract32(insn, 12, 4);
3364 rn = extract32(insn, 5, 5);
3365 rd = extract32(insn, 0, 5);
3367 if (mos || type > 1) {
3368 unallocated_encoding(s);
3372 if (cond < 0x0e) { /* not always */
3373 int label_match = gen_new_label();
3374 label_continue = gen_new_label();
3375 arm_gen_test_cc(cond, label_match);
3377 gen_mov_fp2fp(s, type, rd, rm);
3378 tcg_gen_br(label_continue);
3379 gen_set_label(label_match);
3382 gen_mov_fp2fp(s, type, rd, rn);
3384 if (cond < 0x0e) { /* continue */
3385 gen_set_label(label_continue);
3389 /* C3.6.25 Floating-point data-processing (1 source) - single precision */
3390 static void handle_fp_1src_single(DisasContext *s, int opcode, int rd, int rn)
3396 fpst = get_fpstatus_ptr();
3397 tcg_op = read_fp_sreg(s, rn);
3398 tcg_res = tcg_temp_new_i32();
3401 case 0x0: /* FMOV */
3402 tcg_gen_mov_i32(tcg_res, tcg_op);
3404 case 0x1: /* FABS */
3405 gen_helper_vfp_abss(tcg_res, tcg_op);
3407 case 0x2: /* FNEG */
3408 gen_helper_vfp_negs(tcg_res, tcg_op);
3410 case 0x3: /* FSQRT */
3411 gen_helper_vfp_sqrts(tcg_res, tcg_op, cpu_env);
3413 case 0x8: /* FRINTN */
3414 case 0x9: /* FRINTP */
3415 case 0xa: /* FRINTM */
3416 case 0xb: /* FRINTZ */
3417 case 0xc: /* FRINTA */
3419 TCGv_i32 tcg_rmode = tcg_const_i32(arm_rmode_to_sf(opcode & 7));
3421 gen_helper_set_rmode(tcg_rmode, tcg_rmode, cpu_env);
3422 gen_helper_rints(tcg_res, tcg_op, fpst);
3424 gen_helper_set_rmode(tcg_rmode, tcg_rmode, cpu_env);
3425 tcg_temp_free_i32(tcg_rmode);
3428 case 0xe: /* FRINTX */
3429 gen_helper_rints_exact(tcg_res, tcg_op, fpst);
3431 case 0xf: /* FRINTI */
3432 gen_helper_rints(tcg_res, tcg_op, fpst);
3438 write_fp_sreg(s, rd, tcg_res);
3440 tcg_temp_free_ptr(fpst);
3441 tcg_temp_free_i32(tcg_op);
3442 tcg_temp_free_i32(tcg_res);
3445 /* C3.6.25 Floating-point data-processing (1 source) - double precision */
3446 static void handle_fp_1src_double(DisasContext *s, int opcode, int rd, int rn)
3452 fpst = get_fpstatus_ptr();
3453 tcg_op = read_fp_dreg(s, rn);
3454 tcg_res = tcg_temp_new_i64();
3457 case 0x0: /* FMOV */
3458 tcg_gen_mov_i64(tcg_res, tcg_op);
3460 case 0x1: /* FABS */
3461 gen_helper_vfp_absd(tcg_res, tcg_op);
3463 case 0x2: /* FNEG */
3464 gen_helper_vfp_negd(tcg_res, tcg_op);
3466 case 0x3: /* FSQRT */
3467 gen_helper_vfp_sqrtd(tcg_res, tcg_op, cpu_env);
3469 case 0x8: /* FRINTN */
3470 case 0x9: /* FRINTP */
3471 case 0xa: /* FRINTM */
3472 case 0xb: /* FRINTZ */
3473 case 0xc: /* FRINTA */
3475 TCGv_i32 tcg_rmode = tcg_const_i32(arm_rmode_to_sf(opcode & 7));
3477 gen_helper_set_rmode(tcg_rmode, tcg_rmode, cpu_env);
3478 gen_helper_rintd(tcg_res, tcg_op, fpst);
3480 gen_helper_set_rmode(tcg_rmode, tcg_rmode, cpu_env);
3481 tcg_temp_free_i32(tcg_rmode);
3484 case 0xe: /* FRINTX */
3485 gen_helper_rintd_exact(tcg_res, tcg_op, fpst);
3487 case 0xf: /* FRINTI */
3488 gen_helper_rintd(tcg_res, tcg_op, fpst);
3494 write_fp_dreg(s, rd, tcg_res);
3496 tcg_temp_free_ptr(fpst);
3497 tcg_temp_free_i64(tcg_op);
3498 tcg_temp_free_i64(tcg_res);
3501 static void handle_fp_fcvt(DisasContext *s, int opcode,
3502 int rd, int rn, int dtype, int ntype)
3507 TCGv_i32 tcg_rn = read_fp_sreg(s, rn);
3509 /* Single to double */
3510 TCGv_i64 tcg_rd = tcg_temp_new_i64();
3511 gen_helper_vfp_fcvtds(tcg_rd, tcg_rn, cpu_env);
3512 write_fp_dreg(s, rd, tcg_rd);
3513 tcg_temp_free_i64(tcg_rd);
3515 /* Single to half */
3516 TCGv_i32 tcg_rd = tcg_temp_new_i32();
3517 gen_helper_vfp_fcvt_f32_to_f16(tcg_rd, tcg_rn, cpu_env);
3518 /* write_fp_sreg is OK here because top half of tcg_rd is zero */
3519 write_fp_sreg(s, rd, tcg_rd);
3520 tcg_temp_free_i32(tcg_rd);
3522 tcg_temp_free_i32(tcg_rn);
3527 TCGv_i64 tcg_rn = read_fp_dreg(s, rn);
3528 TCGv_i32 tcg_rd = tcg_temp_new_i32();
3530 /* Double to single */
3531 gen_helper_vfp_fcvtsd(tcg_rd, tcg_rn, cpu_env);
3533 /* Double to half */
3534 gen_helper_vfp_fcvt_f64_to_f16(tcg_rd, tcg_rn, cpu_env);
3535 /* write_fp_sreg is OK here because top half of tcg_rd is zero */
3537 write_fp_sreg(s, rd, tcg_rd);
3538 tcg_temp_free_i32(tcg_rd);
3539 tcg_temp_free_i64(tcg_rn);
3544 TCGv_i32 tcg_rn = read_fp_sreg(s, rn);
3545 tcg_gen_ext16u_i32(tcg_rn, tcg_rn);
3547 /* Half to single */
3548 TCGv_i32 tcg_rd = tcg_temp_new_i32();
3549 gen_helper_vfp_fcvt_f16_to_f32(tcg_rd, tcg_rn, cpu_env);
3550 write_fp_sreg(s, rd, tcg_rd);
3551 tcg_temp_free_i32(tcg_rd);
3553 /* Half to double */
3554 TCGv_i64 tcg_rd = tcg_temp_new_i64();
3555 gen_helper_vfp_fcvt_f16_to_f64(tcg_rd, tcg_rn, cpu_env);
3556 write_fp_dreg(s, rd, tcg_rd);
3557 tcg_temp_free_i64(tcg_rd);
3559 tcg_temp_free_i32(tcg_rn);
3567 /* C3.6.25 Floating point data-processing (1 source)
3568 * 31 30 29 28 24 23 22 21 20 15 14 10 9 5 4 0
3569 * +---+---+---+-----------+------+---+--------+-----------+------+------+
3570 * | M | 0 | S | 1 1 1 1 0 | type | 1 | opcode | 1 0 0 0 0 | Rn | Rd |
3571 * +---+---+---+-----------+------+---+--------+-----------+------+------+
3573 static void disas_fp_1src(DisasContext *s, uint32_t insn)
3575 int type = extract32(insn, 22, 2);
3576 int opcode = extract32(insn, 15, 6);
3577 int rn = extract32(insn, 5, 5);
3578 int rd = extract32(insn, 0, 5);
3581 case 0x4: case 0x5: case 0x7:
3583 /* FCVT between half, single and double precision */
3584 int dtype = extract32(opcode, 0, 2);
3585 if (type == 2 || dtype == type) {
3586 unallocated_encoding(s);
3589 handle_fp_fcvt(s, opcode, rd, rn, dtype, type);
3595 /* 32-to-32 and 64-to-64 ops */
3598 handle_fp_1src_single(s, opcode, rd, rn);
3601 handle_fp_1src_double(s, opcode, rd, rn);
3604 unallocated_encoding(s);
3608 unallocated_encoding(s);
3613 /* C3.6.26 Floating-point data-processing (2 source) - single precision */
3614 static void handle_fp_2src_single(DisasContext *s, int opcode,
3615 int rd, int rn, int rm)
3622 tcg_res = tcg_temp_new_i32();
3623 fpst = get_fpstatus_ptr();
3624 tcg_op1 = read_fp_sreg(s, rn);
3625 tcg_op2 = read_fp_sreg(s, rm);
3628 case 0x0: /* FMUL */
3629 gen_helper_vfp_muls(tcg_res, tcg_op1, tcg_op2, fpst);
3631 case 0x1: /* FDIV */
3632 gen_helper_vfp_divs(tcg_res, tcg_op1, tcg_op2, fpst);
3634 case 0x2: /* FADD */
3635 gen_helper_vfp_adds(tcg_res, tcg_op1, tcg_op2, fpst);
3637 case 0x3: /* FSUB */
3638 gen_helper_vfp_subs(tcg_res, tcg_op1, tcg_op2, fpst);
3640 case 0x4: /* FMAX */
3641 gen_helper_vfp_maxs(tcg_res, tcg_op1, tcg_op2, fpst);
3643 case 0x5: /* FMIN */
3644 gen_helper_vfp_mins(tcg_res, tcg_op1, tcg_op2, fpst);
3646 case 0x6: /* FMAXNM */
3647 gen_helper_vfp_maxnums(tcg_res, tcg_op1, tcg_op2, fpst);
3649 case 0x7: /* FMINNM */
3650 gen_helper_vfp_minnums(tcg_res, tcg_op1, tcg_op2, fpst);
3652 case 0x8: /* FNMUL */
3653 gen_helper_vfp_muls(tcg_res, tcg_op1, tcg_op2, fpst);
3654 gen_helper_vfp_negs(tcg_res, tcg_res);
3658 write_fp_sreg(s, rd, tcg_res);
3660 tcg_temp_free_ptr(fpst);
3661 tcg_temp_free_i32(tcg_op1);
3662 tcg_temp_free_i32(tcg_op2);
3663 tcg_temp_free_i32(tcg_res);
3666 /* C3.6.26 Floating-point data-processing (2 source) - double precision */
3667 static void handle_fp_2src_double(DisasContext *s, int opcode,
3668 int rd, int rn, int rm)
3675 tcg_res = tcg_temp_new_i64();
3676 fpst = get_fpstatus_ptr();
3677 tcg_op1 = read_fp_dreg(s, rn);
3678 tcg_op2 = read_fp_dreg(s, rm);
3681 case 0x0: /* FMUL */
3682 gen_helper_vfp_muld(tcg_res, tcg_op1, tcg_op2, fpst);
3684 case 0x1: /* FDIV */
3685 gen_helper_vfp_divd(tcg_res, tcg_op1, tcg_op2, fpst);
3687 case 0x2: /* FADD */
3688 gen_helper_vfp_addd(tcg_res, tcg_op1, tcg_op2, fpst);
3690 case 0x3: /* FSUB */
3691 gen_helper_vfp_subd(tcg_res, tcg_op1, tcg_op2, fpst);
3693 case 0x4: /* FMAX */
3694 gen_helper_vfp_maxd(tcg_res, tcg_op1, tcg_op2, fpst);
3696 case 0x5: /* FMIN */
3697 gen_helper_vfp_mind(tcg_res, tcg_op1, tcg_op2, fpst);
3699 case 0x6: /* FMAXNM */
3700 gen_helper_vfp_maxnumd(tcg_res, tcg_op1, tcg_op2, fpst);
3702 case 0x7: /* FMINNM */
3703 gen_helper_vfp_minnumd(tcg_res, tcg_op1, tcg_op2, fpst);
3705 case 0x8: /* FNMUL */
3706 gen_helper_vfp_muld(tcg_res, tcg_op1, tcg_op2, fpst);
3707 gen_helper_vfp_negd(tcg_res, tcg_res);
3711 write_fp_dreg(s, rd, tcg_res);
3713 tcg_temp_free_ptr(fpst);
3714 tcg_temp_free_i64(tcg_op1);
3715 tcg_temp_free_i64(tcg_op2);
3716 tcg_temp_free_i64(tcg_res);
3719 /* C3.6.26 Floating point data-processing (2 source)
3720 * 31 30 29 28 24 23 22 21 20 16 15 12 11 10 9 5 4 0
3721 * +---+---+---+-----------+------+---+------+--------+-----+------+------+
3722 * | M | 0 | S | 1 1 1 1 0 | type | 1 | Rm | opcode | 1 0 | Rn | Rd |
3723 * +---+---+---+-----------+------+---+------+--------+-----+------+------+
3725 static void disas_fp_2src(DisasContext *s, uint32_t insn)
3727 int type = extract32(insn, 22, 2);
3728 int rd = extract32(insn, 0, 5);
3729 int rn = extract32(insn, 5, 5);
3730 int rm = extract32(insn, 16, 5);
3731 int opcode = extract32(insn, 12, 4);
3734 unallocated_encoding(s);
3740 handle_fp_2src_single(s, opcode, rd, rn, rm);
3743 handle_fp_2src_double(s, opcode, rd, rn, rm);
3746 unallocated_encoding(s);
3750 /* C3.6.27 Floating-point data-processing (3 source) - single precision */
3751 static void handle_fp_3src_single(DisasContext *s, bool o0, bool o1,
3752 int rd, int rn, int rm, int ra)
3754 TCGv_i32 tcg_op1, tcg_op2, tcg_op3;
3755 TCGv_i32 tcg_res = tcg_temp_new_i32();
3756 TCGv_ptr fpst = get_fpstatus_ptr();
3758 tcg_op1 = read_fp_sreg(s, rn);
3759 tcg_op2 = read_fp_sreg(s, rm);
3760 tcg_op3 = read_fp_sreg(s, ra);
3762 /* These are fused multiply-add, and must be done as one
3763 * floating point operation with no rounding between the
3764 * multiplication and addition steps.
3765 * NB that doing the negations here as separate steps is
3766 * correct : an input NaN should come out with its sign bit
3767 * flipped if it is a negated-input.
3770 gen_helper_vfp_negs(tcg_op3, tcg_op3);
3774 gen_helper_vfp_negs(tcg_op1, tcg_op1);
3777 gen_helper_vfp_muladds(tcg_res, tcg_op1, tcg_op2, tcg_op3, fpst);
3779 write_fp_sreg(s, rd, tcg_res);
3781 tcg_temp_free_ptr(fpst);
3782 tcg_temp_free_i32(tcg_op1);
3783 tcg_temp_free_i32(tcg_op2);
3784 tcg_temp_free_i32(tcg_op3);
3785 tcg_temp_free_i32(tcg_res);
3788 /* C3.6.27 Floating-point data-processing (3 source) - double precision */
3789 static void handle_fp_3src_double(DisasContext *s, bool o0, bool o1,
3790 int rd, int rn, int rm, int ra)
3792 TCGv_i64 tcg_op1, tcg_op2, tcg_op3;
3793 TCGv_i64 tcg_res = tcg_temp_new_i64();
3794 TCGv_ptr fpst = get_fpstatus_ptr();
3796 tcg_op1 = read_fp_dreg(s, rn);
3797 tcg_op2 = read_fp_dreg(s, rm);
3798 tcg_op3 = read_fp_dreg(s, ra);
3800 /* These are fused multiply-add, and must be done as one
3801 * floating point operation with no rounding between the
3802 * multiplication and addition steps.
3803 * NB that doing the negations here as separate steps is
3804 * correct : an input NaN should come out with its sign bit
3805 * flipped if it is a negated-input.
3808 gen_helper_vfp_negd(tcg_op3, tcg_op3);
3812 gen_helper_vfp_negd(tcg_op1, tcg_op1);
3815 gen_helper_vfp_muladdd(tcg_res, tcg_op1, tcg_op2, tcg_op3, fpst);
3817 write_fp_dreg(s, rd, tcg_res);
3819 tcg_temp_free_ptr(fpst);
3820 tcg_temp_free_i64(tcg_op1);
3821 tcg_temp_free_i64(tcg_op2);
3822 tcg_temp_free_i64(tcg_op3);
3823 tcg_temp_free_i64(tcg_res);
3826 /* C3.6.27 Floating point data-processing (3 source)
3827 * 31 30 29 28 24 23 22 21 20 16 15 14 10 9 5 4 0
3828 * +---+---+---+-----------+------+----+------+----+------+------+------+
3829 * | M | 0 | S | 1 1 1 1 1 | type | o1 | Rm | o0 | Ra | Rn | Rd |
3830 * +---+---+---+-----------+------+----+------+----+------+------+------+
3832 static void disas_fp_3src(DisasContext *s, uint32_t insn)
3834 int type = extract32(insn, 22, 2);
3835 int rd = extract32(insn, 0, 5);
3836 int rn = extract32(insn, 5, 5);
3837 int ra = extract32(insn, 10, 5);
3838 int rm = extract32(insn, 16, 5);
3839 bool o0 = extract32(insn, 15, 1);
3840 bool o1 = extract32(insn, 21, 1);
3844 handle_fp_3src_single(s, o0, o1, rd, rn, rm, ra);
3847 handle_fp_3src_double(s, o0, o1, rd, rn, rm, ra);
3850 unallocated_encoding(s);
3854 /* C3.6.28 Floating point immediate
3855 * 31 30 29 28 24 23 22 21 20 13 12 10 9 5 4 0
3856 * +---+---+---+-----------+------+---+------------+-------+------+------+
3857 * | M | 0 | S | 1 1 1 1 0 | type | 1 | imm8 | 1 0 0 | imm5 | Rd |
3858 * +---+---+---+-----------+------+---+------------+-------+------+------+
3860 static void disas_fp_imm(DisasContext *s, uint32_t insn)
3862 int rd = extract32(insn, 0, 5);
3863 int imm8 = extract32(insn, 13, 8);
3864 int is_double = extract32(insn, 22, 2);
3868 if (is_double > 1) {
3869 unallocated_encoding(s);
3873 /* The imm8 encodes the sign bit, enough bits to represent
3874 * an exponent in the range 01....1xx to 10....0xx,
3875 * and the most significant 4 bits of the mantissa; see
3876 * VFPExpandImm() in the v8 ARM ARM.
3879 imm = (extract32(imm8, 7, 1) ? 0x8000 : 0) |
3880 (extract32(imm8, 6, 1) ? 0x3fc0 : 0x4000) |
3881 extract32(imm8, 0, 6);
3884 imm = (extract32(imm8, 7, 1) ? 0x8000 : 0) |
3885 (extract32(imm8, 6, 1) ? 0x3e00 : 0x4000) |
3886 (extract32(imm8, 0, 6) << 3);
3890 tcg_res = tcg_const_i64(imm);
3891 write_fp_dreg(s, rd, tcg_res);
3892 tcg_temp_free_i64(tcg_res);
3895 /* Handle floating point <=> fixed point conversions. Note that we can
3896 * also deal with fp <=> integer conversions as a special case (scale == 64)
3897 * OPTME: consider handling that special case specially or at least skipping
3898 * the call to scalbn in the helpers for zero shifts.
3900 static void handle_fpfpcvt(DisasContext *s, int rd, int rn, int opcode,
3901 bool itof, int rmode, int scale, int sf, int type)
3903 bool is_signed = !(opcode & 1);
3904 bool is_double = type;
3905 TCGv_ptr tcg_fpstatus;
3908 tcg_fpstatus = get_fpstatus_ptr();
3910 tcg_shift = tcg_const_i32(64 - scale);
3913 TCGv_i64 tcg_int = cpu_reg(s, rn);
3915 TCGv_i64 tcg_extend = new_tmp_a64(s);
3918 tcg_gen_ext32s_i64(tcg_extend, tcg_int);
3920 tcg_gen_ext32u_i64(tcg_extend, tcg_int);
3923 tcg_int = tcg_extend;
3927 TCGv_i64 tcg_double = tcg_temp_new_i64();
3929 gen_helper_vfp_sqtod(tcg_double, tcg_int,
3930 tcg_shift, tcg_fpstatus);
3932 gen_helper_vfp_uqtod(tcg_double, tcg_int,
3933 tcg_shift, tcg_fpstatus);
3935 write_fp_dreg(s, rd, tcg_double);
3936 tcg_temp_free_i64(tcg_double);
3938 TCGv_i32 tcg_single = tcg_temp_new_i32();
3940 gen_helper_vfp_sqtos(tcg_single, tcg_int,
3941 tcg_shift, tcg_fpstatus);
3943 gen_helper_vfp_uqtos(tcg_single, tcg_int,
3944 tcg_shift, tcg_fpstatus);
3946 write_fp_sreg(s, rd, tcg_single);
3947 tcg_temp_free_i32(tcg_single);
3950 TCGv_i64 tcg_int = cpu_reg(s, rd);
3953 if (extract32(opcode, 2, 1)) {
3954 /* There are too many rounding modes to all fit into rmode,
3955 * so FCVTA[US] is a special case.
3957 rmode = FPROUNDING_TIEAWAY;
3960 tcg_rmode = tcg_const_i32(arm_rmode_to_sf(rmode));
3962 gen_helper_set_rmode(tcg_rmode, tcg_rmode, cpu_env);
3965 TCGv_i64 tcg_double = read_fp_dreg(s, rn);
3968 gen_helper_vfp_tosld(tcg_int, tcg_double,
3969 tcg_shift, tcg_fpstatus);
3971 gen_helper_vfp_tosqd(tcg_int, tcg_double,
3972 tcg_shift, tcg_fpstatus);
3976 gen_helper_vfp_tould(tcg_int, tcg_double,
3977 tcg_shift, tcg_fpstatus);
3979 gen_helper_vfp_touqd(tcg_int, tcg_double,
3980 tcg_shift, tcg_fpstatus);
3983 tcg_temp_free_i64(tcg_double);
3985 TCGv_i32 tcg_single = read_fp_sreg(s, rn);
3988 gen_helper_vfp_tosqs(tcg_int, tcg_single,
3989 tcg_shift, tcg_fpstatus);
3991 gen_helper_vfp_touqs(tcg_int, tcg_single,
3992 tcg_shift, tcg_fpstatus);
3995 TCGv_i32 tcg_dest = tcg_temp_new_i32();
3997 gen_helper_vfp_tosls(tcg_dest, tcg_single,
3998 tcg_shift, tcg_fpstatus);
4000 gen_helper_vfp_touls(tcg_dest, tcg_single,
4001 tcg_shift, tcg_fpstatus);
4003 tcg_gen_extu_i32_i64(tcg_int, tcg_dest);
4004 tcg_temp_free_i32(tcg_dest);
4006 tcg_temp_free_i32(tcg_single);
4009 gen_helper_set_rmode(tcg_rmode, tcg_rmode, cpu_env);
4010 tcg_temp_free_i32(tcg_rmode);
4013 tcg_gen_ext32u_i64(tcg_int, tcg_int);
4017 tcg_temp_free_ptr(tcg_fpstatus);
4018 tcg_temp_free_i32(tcg_shift);
4021 /* C3.6.29 Floating point <-> fixed point conversions
4022 * 31 30 29 28 24 23 22 21 20 19 18 16 15 10 9 5 4 0
4023 * +----+---+---+-----------+------+---+-------+--------+-------+------+------+
4024 * | sf | 0 | S | 1 1 1 1 0 | type | 0 | rmode | opcode | scale | Rn | Rd |
4025 * +----+---+---+-----------+------+---+-------+--------+-------+------+------+
4027 static void disas_fp_fixed_conv(DisasContext *s, uint32_t insn)
4029 int rd = extract32(insn, 0, 5);
4030 int rn = extract32(insn, 5, 5);
4031 int scale = extract32(insn, 10, 6);
4032 int opcode = extract32(insn, 16, 3);
4033 int rmode = extract32(insn, 19, 2);
4034 int type = extract32(insn, 22, 2);
4035 bool sbit = extract32(insn, 29, 1);
4036 bool sf = extract32(insn, 31, 1);
4039 if (sbit || (type > 1)
4040 || (!sf && scale < 32)) {
4041 unallocated_encoding(s);
4045 switch ((rmode << 3) | opcode) {
4046 case 0x2: /* SCVTF */
4047 case 0x3: /* UCVTF */
4050 case 0x18: /* FCVTZS */
4051 case 0x19: /* FCVTZU */
4055 unallocated_encoding(s);
4059 handle_fpfpcvt(s, rd, rn, opcode, itof, FPROUNDING_ZERO, scale, sf, type);
4062 static void handle_fmov(DisasContext *s, int rd, int rn, int type, bool itof)
4064 /* FMOV: gpr to or from float, double, or top half of quad fp reg,
4065 * without conversion.
4069 TCGv_i64 tcg_rn = cpu_reg(s, rn);
4075 TCGv_i64 tmp = tcg_temp_new_i64();
4076 tcg_gen_ext32u_i64(tmp, tcg_rn);
4077 tcg_gen_st_i64(tmp, cpu_env, fp_reg_offset(rd, MO_64));
4078 tcg_gen_movi_i64(tmp, 0);
4079 tcg_gen_st_i64(tmp, cpu_env, fp_reg_hi_offset(rd));
4080 tcg_temp_free_i64(tmp);
4086 TCGv_i64 tmp = tcg_const_i64(0);
4087 tcg_gen_st_i64(tcg_rn, cpu_env, fp_reg_offset(rd, MO_64));
4088 tcg_gen_st_i64(tmp, cpu_env, fp_reg_hi_offset(rd));
4089 tcg_temp_free_i64(tmp);
4093 /* 64 bit to top half. */
4094 tcg_gen_st_i64(tcg_rn, cpu_env, fp_reg_hi_offset(rd));
4098 TCGv_i64 tcg_rd = cpu_reg(s, rd);
4103 tcg_gen_ld32u_i64(tcg_rd, cpu_env, fp_reg_offset(rn, MO_32));
4107 tcg_gen_ld_i64(tcg_rd, cpu_env, fp_reg_offset(rn, MO_64));
4110 /* 64 bits from top half */
4111 tcg_gen_ld_i64(tcg_rd, cpu_env, fp_reg_hi_offset(rn));
4117 /* C3.6.30 Floating point <-> integer conversions
4118 * 31 30 29 28 24 23 22 21 20 19 18 16 15 10 9 5 4 0
4119 * +----+---+---+-----------+------+---+-------+-----+-------------+----+----+
4120 * | sf | 0 | S | 1 1 1 1 0 | type | 1 | rmode | opc | 0 0 0 0 0 0 | Rn | Rd |
4121 * +----+---+---+-----------+------+---+-------+-----+-------------+----+----+
4123 static void disas_fp_int_conv(DisasContext *s, uint32_t insn)
4125 int rd = extract32(insn, 0, 5);
4126 int rn = extract32(insn, 5, 5);
4127 int opcode = extract32(insn, 16, 3);
4128 int rmode = extract32(insn, 19, 2);
4129 int type = extract32(insn, 22, 2);
4130 bool sbit = extract32(insn, 29, 1);
4131 bool sf = extract32(insn, 31, 1);
4134 unallocated_encoding(s);
4140 bool itof = opcode & 1;
4143 unallocated_encoding(s);
4147 switch (sf << 3 | type << 1 | rmode) {
4148 case 0x0: /* 32 bit */
4149 case 0xa: /* 64 bit */
4150 case 0xd: /* 64 bit to top half of quad */
4153 /* all other sf/type/rmode combinations are invalid */
4154 unallocated_encoding(s);
4158 handle_fmov(s, rd, rn, type, itof);
4160 /* actual FP conversions */
4161 bool itof = extract32(opcode, 1, 1);
4163 if (type > 1 || (rmode != 0 && opcode > 1)) {
4164 unallocated_encoding(s);
4168 handle_fpfpcvt(s, rd, rn, opcode, itof, rmode, 64, sf, type);
4172 /* FP-specific subcases of table C3-6 (SIMD and FP data processing)
4173 * 31 30 29 28 25 24 0
4174 * +---+---+---+---------+-----------------------------+
4175 * | | 0 | | 1 1 1 1 | |
4176 * +---+---+---+---------+-----------------------------+
4178 static void disas_data_proc_fp(DisasContext *s, uint32_t insn)
4180 if (extract32(insn, 24, 1)) {
4181 /* Floating point data-processing (3 source) */
4182 disas_fp_3src(s, insn);
4183 } else if (extract32(insn, 21, 1) == 0) {
4184 /* Floating point to fixed point conversions */
4185 disas_fp_fixed_conv(s, insn);
4187 switch (extract32(insn, 10, 2)) {
4189 /* Floating point conditional compare */
4190 disas_fp_ccomp(s, insn);
4193 /* Floating point data-processing (2 source) */
4194 disas_fp_2src(s, insn);
4197 /* Floating point conditional select */
4198 disas_fp_csel(s, insn);
4201 switch (ctz32(extract32(insn, 12, 4))) {
4202 case 0: /* [15:12] == xxx1 */
4203 /* Floating point immediate */
4204 disas_fp_imm(s, insn);
4206 case 1: /* [15:12] == xx10 */
4207 /* Floating point compare */
4208 disas_fp_compare(s, insn);
4210 case 2: /* [15:12] == x100 */
4211 /* Floating point data-processing (1 source) */
4212 disas_fp_1src(s, insn);
4214 case 3: /* [15:12] == 1000 */
4215 unallocated_encoding(s);
4217 default: /* [15:12] == 0000 */
4218 /* Floating point <-> integer conversions */
4219 disas_fp_int_conv(s, insn);
4227 static void disas_data_proc_simd(DisasContext *s, uint32_t insn)
4229 /* Note that this is called with all non-FP cases from
4230 * table C3-6 so it must UNDEF for entries not specifically
4231 * allocated to instructions in that table.
4233 unsupported_encoding(s, insn);
4236 /* C3.6 Data processing - SIMD and floating point */
4237 static void disas_data_proc_simd_fp(DisasContext *s, uint32_t insn)
4239 if (extract32(insn, 28, 1) == 1 && extract32(insn, 30, 1) == 0) {
4240 disas_data_proc_fp(s, insn);
4242 /* SIMD, including crypto */
4243 disas_data_proc_simd(s, insn);
4247 /* C3.1 A64 instruction index by encoding */
4248 static void disas_a64_insn(CPUARMState *env, DisasContext *s)
4252 insn = arm_ldl_code(env, s->pc, s->bswap_code);
4256 switch (extract32(insn, 25, 4)) {
4257 case 0x0: case 0x1: case 0x2: case 0x3: /* UNALLOCATED */
4258 unallocated_encoding(s);
4260 case 0x8: case 0x9: /* Data processing - immediate */
4261 disas_data_proc_imm(s, insn);
4263 case 0xa: case 0xb: /* Branch, exception generation and system insns */
4264 disas_b_exc_sys(s, insn);
4269 case 0xe: /* Loads and stores */
4270 disas_ldst(s, insn);
4273 case 0xd: /* Data processing - register */
4274 disas_data_proc_reg(s, insn);
4277 case 0xf: /* Data processing - SIMD and floating point */
4278 disas_data_proc_simd_fp(s, insn);
4281 assert(FALSE); /* all 15 cases should be handled above */
4285 /* if we allocated any temporaries, free them here */
4289 void gen_intermediate_code_internal_a64(ARMCPU *cpu,
4290 TranslationBlock *tb,
4293 CPUState *cs = CPU(cpu);
4294 CPUARMState *env = &cpu->env;
4295 DisasContext dc1, *dc = &dc1;
4297 uint16_t *gen_opc_end;
4299 target_ulong pc_start;
4300 target_ulong next_page_start;
4308 gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
4310 dc->is_jmp = DISAS_NEXT;
4312 dc->singlestep_enabled = cs->singlestep_enabled;
4318 dc->condexec_mask = 0;
4319 dc->condexec_cond = 0;
4320 #if !defined(CONFIG_USER_ONLY)
4323 dc->vfp_enabled = 0;
4326 dc->cp_regs = cpu->cp_regs;
4327 dc->current_pl = arm_current_pl(env);
4329 init_tmp_a64_array(dc);
4331 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
4334 max_insns = tb->cflags & CF_COUNT_MASK;
4335 if (max_insns == 0) {
4336 max_insns = CF_COUNT_MASK;
4341 tcg_clear_temp_count();
4344 if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
4345 QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
4346 if (bp->pc == dc->pc) {
4347 gen_exception_insn(dc, 0, EXCP_DEBUG);
4348 /* Advance PC so that clearing the breakpoint will
4349 invalidate this TB. */
4351 goto done_generating;
4357 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
4361 tcg_ctx.gen_opc_instr_start[lj++] = 0;
4364 tcg_ctx.gen_opc_pc[lj] = dc->pc;
4365 tcg_ctx.gen_opc_instr_start[lj] = 1;
4366 tcg_ctx.gen_opc_icount[lj] = num_insns;
4369 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
4373 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
4374 tcg_gen_debug_insn_start(dc->pc);
4377 disas_a64_insn(env, dc);
4379 if (tcg_check_temp_count()) {
4380 fprintf(stderr, "TCG temporary leak before "TARGET_FMT_lx"\n",
4384 /* Translation stops when a conditional branch is encountered.
4385 * Otherwise the subsequent code could get translated several times.
4386 * Also stop translation when a page boundary is reached. This
4387 * ensures prefetch aborts occur at the right place.
4390 } while (!dc->is_jmp && tcg_ctx.gen_opc_ptr < gen_opc_end &&
4391 !cs->singlestep_enabled &&
4393 dc->pc < next_page_start &&
4394 num_insns < max_insns);
4396 if (tb->cflags & CF_LAST_IO) {
4400 if (unlikely(cs->singlestep_enabled) && dc->is_jmp != DISAS_EXC) {
4401 /* Note that this means single stepping WFI doesn't halt the CPU.
4402 * For conditional branch insns this is harmless unreachable code as
4403 * gen_goto_tb() has already handled emitting the debug exception
4404 * (and thus a tb-jump is not possible when singlestepping).
4406 assert(dc->is_jmp != DISAS_TB_JUMP);
4407 if (dc->is_jmp != DISAS_JUMP) {
4408 gen_a64_set_pc_im(dc->pc);
4410 gen_exception(EXCP_DEBUG);
4412 switch (dc->is_jmp) {
4414 gen_goto_tb(dc, 1, dc->pc);
4418 gen_a64_set_pc_im(dc->pc);
4421 /* indicate that the hash table must be used to find the next TB */
4429 /* This is a special case because we don't want to just halt the CPU
4430 * if trying to debug across a WFI.
4432 gen_helper_wfi(cpu_env);
4438 gen_tb_end(tb, num_insns);
4439 *tcg_ctx.gen_opc_ptr = INDEX_op_end;
4442 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
4443 qemu_log("----------------\n");
4444 qemu_log("IN: %s\n", lookup_symbol(pc_start));
4445 log_target_disas(env, pc_start, dc->pc - pc_start,
4446 dc->thumb | (dc->bswap_code << 1));
4451 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
4454 tcg_ctx.gen_opc_instr_start[lj++] = 0;
4457 tb->size = dc->pc - pc_start;
4458 tb->icount = num_insns;