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 static const char *regnames[] = {
42 "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",
43 "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15",
44 "x16", "x17", "x18", "x19", "x20", "x21", "x22", "x23",
45 "x24", "x25", "x26", "x27", "x28", "x29", "lr", "sp"
49 A64_SHIFT_TYPE_LSL = 0,
50 A64_SHIFT_TYPE_LSR = 1,
51 A64_SHIFT_TYPE_ASR = 2,
52 A64_SHIFT_TYPE_ROR = 3
55 /* initialize TCG globals. */
56 void a64_translate_init(void)
60 cpu_pc = tcg_global_mem_new_i64(TCG_AREG0,
61 offsetof(CPUARMState, pc),
63 for (i = 0; i < 32; i++) {
64 cpu_X[i] = tcg_global_mem_new_i64(TCG_AREG0,
65 offsetof(CPUARMState, xregs[i]),
69 cpu_NF = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUARMState, NF), "NF");
70 cpu_ZF = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUARMState, ZF), "ZF");
71 cpu_CF = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUARMState, CF), "CF");
72 cpu_VF = tcg_global_mem_new_i32(TCG_AREG0, offsetof(CPUARMState, VF), "VF");
75 void aarch64_cpu_dump_state(CPUState *cs, FILE *f,
76 fprintf_function cpu_fprintf, int flags)
78 ARMCPU *cpu = ARM_CPU(cs);
79 CPUARMState *env = &cpu->env;
80 uint32_t psr = pstate_read(env);
83 cpu_fprintf(f, "PC=%016"PRIx64" SP=%016"PRIx64"\n",
84 env->pc, env->xregs[31]);
85 for (i = 0; i < 31; i++) {
86 cpu_fprintf(f, "X%02d=%016"PRIx64, i, env->xregs[i]);
93 cpu_fprintf(f, "PSTATE=%08x (flags %c%c%c%c)\n",
95 psr & PSTATE_N ? 'N' : '-',
96 psr & PSTATE_Z ? 'Z' : '-',
97 psr & PSTATE_C ? 'C' : '-',
98 psr & PSTATE_V ? 'V' : '-');
102 void gen_a64_set_pc_im(uint64_t val)
104 tcg_gen_movi_i64(cpu_pc, val);
107 static void gen_exception(int excp)
109 TCGv_i32 tmp = tcg_temp_new_i32();
110 tcg_gen_movi_i32(tmp, excp);
111 gen_helper_exception(cpu_env, tmp);
112 tcg_temp_free_i32(tmp);
115 static void gen_exception_insn(DisasContext *s, int offset, int excp)
117 gen_a64_set_pc_im(s->pc - offset);
119 s->is_jmp = DISAS_EXC;
122 static inline bool use_goto_tb(DisasContext *s, int n, uint64_t dest)
124 /* No direct tb linking with singlestep or deterministic io */
125 if (s->singlestep_enabled || (s->tb->cflags & CF_LAST_IO)) {
129 /* Only link tbs from inside the same guest page */
130 if ((s->tb->pc & TARGET_PAGE_MASK) != (dest & TARGET_PAGE_MASK)) {
137 static inline void gen_goto_tb(DisasContext *s, int n, uint64_t dest)
139 TranslationBlock *tb;
142 if (use_goto_tb(s, n, dest)) {
144 gen_a64_set_pc_im(dest);
145 tcg_gen_exit_tb((tcg_target_long)tb + n);
146 s->is_jmp = DISAS_TB_JUMP;
148 gen_a64_set_pc_im(dest);
149 if (s->singlestep_enabled) {
150 gen_exception(EXCP_DEBUG);
153 s->is_jmp = DISAS_JUMP;
157 static void unallocated_encoding(DisasContext *s)
159 gen_exception_insn(s, 4, EXCP_UDEF);
162 #define unsupported_encoding(s, insn) \
164 qemu_log_mask(LOG_UNIMP, \
165 "%s:%d: unsupported instruction encoding 0x%08x " \
166 "at pc=%016" PRIx64 "\n", \
167 __FILE__, __LINE__, insn, s->pc - 4); \
168 unallocated_encoding(s); \
171 static void init_tmp_a64_array(DisasContext *s)
173 #ifdef CONFIG_DEBUG_TCG
175 for (i = 0; i < ARRAY_SIZE(s->tmp_a64); i++) {
176 TCGV_UNUSED_I64(s->tmp_a64[i]);
179 s->tmp_a64_count = 0;
182 static void free_tmp_a64(DisasContext *s)
185 for (i = 0; i < s->tmp_a64_count; i++) {
186 tcg_temp_free_i64(s->tmp_a64[i]);
188 init_tmp_a64_array(s);
191 static TCGv_i64 new_tmp_a64(DisasContext *s)
193 assert(s->tmp_a64_count < TMP_A64_MAX);
194 return s->tmp_a64[s->tmp_a64_count++] = tcg_temp_new_i64();
197 static TCGv_i64 new_tmp_a64_zero(DisasContext *s)
199 TCGv_i64 t = new_tmp_a64(s);
200 tcg_gen_movi_i64(t, 0);
204 static TCGv_i64 cpu_reg(DisasContext *s, int reg)
207 return new_tmp_a64_zero(s);
213 /* read a cpu register in 32bit/64bit mode. Returns a TCGv_i64
214 * representing the register contents. This TCGv is an auto-freed
215 * temporary so it need not be explicitly freed, and may be modified.
217 static TCGv_i64 read_cpu_reg(DisasContext *s, int reg, int sf)
219 TCGv_i64 v = new_tmp_a64(s);
222 tcg_gen_mov_i64(v, cpu_X[reg]);
224 tcg_gen_ext32u_i64(v, cpu_X[reg]);
227 tcg_gen_movi_i64(v, 0);
232 /* Set ZF and NF based on a 64 bit result. This is alas fiddlier
233 * than the 32 bit equivalent.
235 static inline void gen_set_NZ64(TCGv_i64 result)
237 TCGv_i64 flag = tcg_temp_new_i64();
239 tcg_gen_setcondi_i64(TCG_COND_NE, flag, result, 0);
240 tcg_gen_trunc_i64_i32(cpu_ZF, flag);
241 tcg_gen_shri_i64(flag, result, 32);
242 tcg_gen_trunc_i64_i32(cpu_NF, flag);
243 tcg_temp_free_i64(flag);
246 /* Set NZCV as for a logical operation: NZ as per result, CV cleared. */
247 static inline void gen_logic_CC(int sf, TCGv_i64 result)
250 gen_set_NZ64(result);
252 tcg_gen_trunc_i64_i32(cpu_ZF, result);
253 tcg_gen_trunc_i64_i32(cpu_NF, result);
255 tcg_gen_movi_i32(cpu_CF, 0);
256 tcg_gen_movi_i32(cpu_VF, 0);
260 * the instruction disassembly implemented here matches
261 * the instruction encoding classifications in chapter 3 (C3)
262 * of the ARM Architecture Reference Manual (DDI0487A_a)
265 /* C3.2.7 Unconditional branch (immediate)
267 * +----+-----------+-------------------------------------+
268 * | op | 0 0 1 0 1 | imm26 |
269 * +----+-----------+-------------------------------------+
271 static void disas_uncond_b_imm(DisasContext *s, uint32_t insn)
273 uint64_t addr = s->pc + sextract32(insn, 0, 26) * 4 - 4;
275 if (insn & (1 << 31)) {
276 /* C5.6.26 BL Branch with link */
277 tcg_gen_movi_i64(cpu_reg(s, 30), s->pc);
280 /* C5.6.20 B Branch / C5.6.26 BL Branch with link */
281 gen_goto_tb(s, 0, addr);
284 /* C3.2.1 Compare & branch (immediate)
285 * 31 30 25 24 23 5 4 0
286 * +----+-------------+----+---------------------+--------+
287 * | sf | 0 1 1 0 1 0 | op | imm19 | Rt |
288 * +----+-------------+----+---------------------+--------+
290 static void disas_comp_b_imm(DisasContext *s, uint32_t insn)
292 unsigned int sf, op, rt;
297 sf = extract32(insn, 31, 1);
298 op = extract32(insn, 24, 1); /* 0: CBZ; 1: CBNZ */
299 rt = extract32(insn, 0, 5);
300 addr = s->pc + sextract32(insn, 5, 19) * 4 - 4;
302 tcg_cmp = read_cpu_reg(s, rt, sf);
303 label_match = gen_new_label();
305 tcg_gen_brcondi_i64(op ? TCG_COND_NE : TCG_COND_EQ,
306 tcg_cmp, 0, label_match);
308 gen_goto_tb(s, 0, s->pc);
309 gen_set_label(label_match);
310 gen_goto_tb(s, 1, addr);
313 /* C3.2.5 Test & branch (immediate)
314 * 31 30 25 24 23 19 18 5 4 0
315 * +----+-------------+----+-------+-------------+------+
316 * | b5 | 0 1 1 0 1 1 | op | b40 | imm14 | Rt |
317 * +----+-------------+----+-------+-------------+------+
319 static void disas_test_b_imm(DisasContext *s, uint32_t insn)
321 unsigned int bit_pos, op, rt;
326 bit_pos = (extract32(insn, 31, 1) << 5) | extract32(insn, 19, 5);
327 op = extract32(insn, 24, 1); /* 0: TBZ; 1: TBNZ */
328 addr = s->pc + sextract32(insn, 5, 14) * 4 - 4;
329 rt = extract32(insn, 0, 5);
331 tcg_cmp = tcg_temp_new_i64();
332 tcg_gen_andi_i64(tcg_cmp, cpu_reg(s, rt), (1ULL << bit_pos));
333 label_match = gen_new_label();
334 tcg_gen_brcondi_i64(op ? TCG_COND_NE : TCG_COND_EQ,
335 tcg_cmp, 0, label_match);
336 tcg_temp_free_i64(tcg_cmp);
337 gen_goto_tb(s, 0, s->pc);
338 gen_set_label(label_match);
339 gen_goto_tb(s, 1, addr);
342 /* C3.2.2 / C5.6.19 Conditional branch (immediate)
343 * 31 25 24 23 5 4 3 0
344 * +---------------+----+---------------------+----+------+
345 * | 0 1 0 1 0 1 0 | o1 | imm19 | o0 | cond |
346 * +---------------+----+---------------------+----+------+
348 static void disas_cond_b_imm(DisasContext *s, uint32_t insn)
353 if ((insn & (1 << 4)) || (insn & (1 << 24))) {
354 unallocated_encoding(s);
357 addr = s->pc + sextract32(insn, 5, 19) * 4 - 4;
358 cond = extract32(insn, 0, 4);
361 /* genuinely conditional branches */
362 int label_match = gen_new_label();
363 arm_gen_test_cc(cond, label_match);
364 gen_goto_tb(s, 0, s->pc);
365 gen_set_label(label_match);
366 gen_goto_tb(s, 1, addr);
368 /* 0xe and 0xf are both "always" conditions */
369 gen_goto_tb(s, 0, addr);
374 static void handle_hint(DisasContext *s, uint32_t insn,
375 unsigned int op1, unsigned int op2, unsigned int crm)
377 unsigned int selector = crm << 3 | op2;
380 unallocated_encoding(s);
392 /* we treat all as NOP at least for now */
395 /* default specified as NOP equivalent */
400 /* CLREX, DSB, DMB, ISB */
401 static void handle_sync(DisasContext *s, uint32_t insn,
402 unsigned int op1, unsigned int op2, unsigned int crm)
405 unallocated_encoding(s);
411 unsupported_encoding(s, insn);
416 /* We don't emulate caches so barriers are no-ops */
419 unallocated_encoding(s);
424 /* C5.6.130 MSR (immediate) - move immediate to processor state field */
425 static void handle_msr_i(DisasContext *s, uint32_t insn,
426 unsigned int op1, unsigned int op2, unsigned int crm)
428 unsupported_encoding(s, insn);
432 static void handle_sys(DisasContext *s, uint32_t insn, unsigned int l,
433 unsigned int op1, unsigned int op2,
434 unsigned int crn, unsigned int crm, unsigned int rt)
436 unsupported_encoding(s, insn);
439 /* C5.6.129 MRS - move from system register */
440 static void handle_mrs(DisasContext *s, uint32_t insn, unsigned int op0,
441 unsigned int op1, unsigned int op2,
442 unsigned int crn, unsigned int crm, unsigned int rt)
444 unsupported_encoding(s, insn);
447 /* C5.6.131 MSR (register) - move to system register */
448 static void handle_msr(DisasContext *s, uint32_t insn, unsigned int op0,
449 unsigned int op1, unsigned int op2,
450 unsigned int crn, unsigned int crm, unsigned int rt)
452 unsupported_encoding(s, insn);
456 * 31 22 21 20 19 18 16 15 12 11 8 7 5 4 0
457 * +---------------------+---+-----+-----+-------+-------+-----+------+
458 * | 1 1 0 1 0 1 0 1 0 0 | L | op0 | op1 | CRn | CRm | op2 | Rt |
459 * +---------------------+---+-----+-----+-------+-------+-----+------+
461 static void disas_system(DisasContext *s, uint32_t insn)
463 unsigned int l, op0, op1, crn, crm, op2, rt;
464 l = extract32(insn, 21, 1);
465 op0 = extract32(insn, 19, 2);
466 op1 = extract32(insn, 16, 3);
467 crn = extract32(insn, 12, 4);
468 crm = extract32(insn, 8, 4);
469 op2 = extract32(insn, 5, 3);
470 rt = extract32(insn, 0, 5);
474 unallocated_encoding(s);
478 case 2: /* C5.6.68 HINT */
479 handle_hint(s, insn, op1, op2, crm);
481 case 3: /* CLREX, DSB, DMB, ISB */
482 handle_sync(s, insn, op1, op2, crm);
484 case 4: /* C5.6.130 MSR (immediate) */
485 handle_msr_i(s, insn, op1, op2, crm);
488 unallocated_encoding(s);
496 handle_sys(s, insn, l, op1, op2, crn, crm, rt);
497 } else if (l) { /* op0 > 1 */
498 /* C5.6.129 MRS - move from system register */
499 handle_mrs(s, insn, op0, op1, op2, crn, crm, rt);
501 /* C5.6.131 MSR (register) - move to system register */
502 handle_msr(s, insn, op0, op1, op2, crn, crm, rt);
506 /* Exception generation */
507 static void disas_exc(DisasContext *s, uint32_t insn)
509 unsupported_encoding(s, insn);
512 /* C3.2.7 Unconditional branch (register)
513 * 31 25 24 21 20 16 15 10 9 5 4 0
514 * +---------------+-------+-------+-------+------+-------+
515 * | 1 1 0 1 0 1 1 | opc | op2 | op3 | Rn | op4 |
516 * +---------------+-------+-------+-------+------+-------+
518 static void disas_uncond_b_reg(DisasContext *s, uint32_t insn)
520 unsigned int opc, op2, op3, rn, op4;
522 opc = extract32(insn, 21, 4);
523 op2 = extract32(insn, 16, 5);
524 op3 = extract32(insn, 10, 6);
525 rn = extract32(insn, 5, 5);
526 op4 = extract32(insn, 0, 5);
528 if (op4 != 0x0 || op3 != 0x0 || op2 != 0x1f) {
529 unallocated_encoding(s);
538 tcg_gen_movi_i64(cpu_reg(s, 30), s->pc);
543 unallocated_encoding(s);
545 unsupported_encoding(s, insn);
549 unallocated_encoding(s);
553 tcg_gen_mov_i64(cpu_pc, cpu_reg(s, rn));
554 s->is_jmp = DISAS_JUMP;
557 /* C3.2 Branches, exception generating and system instructions */
558 static void disas_b_exc_sys(DisasContext *s, uint32_t insn)
560 switch (extract32(insn, 25, 7)) {
561 case 0x0a: case 0x0b:
562 case 0x4a: case 0x4b: /* Unconditional branch (immediate) */
563 disas_uncond_b_imm(s, insn);
565 case 0x1a: case 0x5a: /* Compare & branch (immediate) */
566 disas_comp_b_imm(s, insn);
568 case 0x1b: case 0x5b: /* Test & branch (immediate) */
569 disas_test_b_imm(s, insn);
571 case 0x2a: /* Conditional branch (immediate) */
572 disas_cond_b_imm(s, insn);
574 case 0x6a: /* Exception generation / System */
575 if (insn & (1 << 24)) {
576 disas_system(s, insn);
581 case 0x6b: /* Unconditional branch (register) */
582 disas_uncond_b_reg(s, insn);
585 unallocated_encoding(s);
590 /* Load/store exclusive */
591 static void disas_ldst_excl(DisasContext *s, uint32_t insn)
593 unsupported_encoding(s, insn);
596 /* Load register (literal) */
597 static void disas_ld_lit(DisasContext *s, uint32_t insn)
599 unsupported_encoding(s, insn);
602 /* Load/store pair (all forms) */
603 static void disas_ldst_pair(DisasContext *s, uint32_t insn)
605 unsupported_encoding(s, insn);
608 /* Load/store register (all forms) */
609 static void disas_ldst_reg(DisasContext *s, uint32_t insn)
611 unsupported_encoding(s, insn);
614 /* AdvSIMD load/store multiple structures */
615 static void disas_ldst_multiple_struct(DisasContext *s, uint32_t insn)
617 unsupported_encoding(s, insn);
620 /* AdvSIMD load/store single structure */
621 static void disas_ldst_single_struct(DisasContext *s, uint32_t insn)
623 unsupported_encoding(s, insn);
626 /* C3.3 Loads and stores */
627 static void disas_ldst(DisasContext *s, uint32_t insn)
629 switch (extract32(insn, 24, 6)) {
630 case 0x08: /* Load/store exclusive */
631 disas_ldst_excl(s, insn);
633 case 0x18: case 0x1c: /* Load register (literal) */
634 disas_ld_lit(s, insn);
636 case 0x28: case 0x29:
637 case 0x2c: case 0x2d: /* Load/store pair (all forms) */
638 disas_ldst_pair(s, insn);
640 case 0x38: case 0x39:
641 case 0x3c: case 0x3d: /* Load/store register (all forms) */
642 disas_ldst_reg(s, insn);
644 case 0x0c: /* AdvSIMD load/store multiple structures */
645 disas_ldst_multiple_struct(s, insn);
647 case 0x0d: /* AdvSIMD load/store single structure */
648 disas_ldst_single_struct(s, insn);
651 unallocated_encoding(s);
656 /* PC-rel. addressing */
657 static void disas_pc_rel_adr(DisasContext *s, uint32_t insn)
659 unsupported_encoding(s, insn);
662 /* Add/subtract (immediate) */
663 static void disas_add_sub_imm(DisasContext *s, uint32_t insn)
665 unsupported_encoding(s, insn);
668 /* Logical (immediate) */
669 static void disas_logic_imm(DisasContext *s, uint32_t insn)
671 unsupported_encoding(s, insn);
674 /* Move wide (immediate) */
675 static void disas_movw_imm(DisasContext *s, uint32_t insn)
677 unsupported_encoding(s, insn);
681 static void disas_bitfield(DisasContext *s, uint32_t insn)
683 unsupported_encoding(s, insn);
687 static void disas_extract(DisasContext *s, uint32_t insn)
689 unsupported_encoding(s, insn);
692 /* C3.4 Data processing - immediate */
693 static void disas_data_proc_imm(DisasContext *s, uint32_t insn)
695 switch (extract32(insn, 23, 6)) {
696 case 0x20: case 0x21: /* PC-rel. addressing */
697 disas_pc_rel_adr(s, insn);
699 case 0x22: case 0x23: /* Add/subtract (immediate) */
700 disas_add_sub_imm(s, insn);
702 case 0x24: /* Logical (immediate) */
703 disas_logic_imm(s, insn);
705 case 0x25: /* Move wide (immediate) */
706 disas_movw_imm(s, insn);
708 case 0x26: /* Bitfield */
709 disas_bitfield(s, insn);
711 case 0x27: /* Extract */
712 disas_extract(s, insn);
715 unallocated_encoding(s);
720 /* Shift a TCGv src by TCGv shift_amount, put result in dst.
721 * Note that it is the caller's responsibility to ensure that the
722 * shift amount is in range (ie 0..31 or 0..63) and provide the ARM
723 * mandated semantics for out of range shifts.
725 static void shift_reg(TCGv_i64 dst, TCGv_i64 src, int sf,
726 enum a64_shift_type shift_type, TCGv_i64 shift_amount)
728 switch (shift_type) {
729 case A64_SHIFT_TYPE_LSL:
730 tcg_gen_shl_i64(dst, src, shift_amount);
732 case A64_SHIFT_TYPE_LSR:
733 tcg_gen_shr_i64(dst, src, shift_amount);
735 case A64_SHIFT_TYPE_ASR:
737 tcg_gen_ext32s_i64(dst, src);
739 tcg_gen_sar_i64(dst, sf ? src : dst, shift_amount);
741 case A64_SHIFT_TYPE_ROR:
743 tcg_gen_rotr_i64(dst, src, shift_amount);
746 t0 = tcg_temp_new_i32();
747 t1 = tcg_temp_new_i32();
748 tcg_gen_trunc_i64_i32(t0, src);
749 tcg_gen_trunc_i64_i32(t1, shift_amount);
750 tcg_gen_rotr_i32(t0, t0, t1);
751 tcg_gen_extu_i32_i64(dst, t0);
752 tcg_temp_free_i32(t0);
753 tcg_temp_free_i32(t1);
757 assert(FALSE); /* all shift types should be handled */
761 if (!sf) { /* zero extend final result */
762 tcg_gen_ext32u_i64(dst, dst);
766 /* Shift a TCGv src by immediate, put result in dst.
767 * The shift amount must be in range (this should always be true as the
768 * relevant instructions will UNDEF on bad shift immediates).
770 static void shift_reg_imm(TCGv_i64 dst, TCGv_i64 src, int sf,
771 enum a64_shift_type shift_type, unsigned int shift_i)
773 assert(shift_i < (sf ? 64 : 32));
776 tcg_gen_mov_i64(dst, src);
778 TCGv_i64 shift_const;
780 shift_const = tcg_const_i64(shift_i);
781 shift_reg(dst, src, sf, shift_type, shift_const);
782 tcg_temp_free_i64(shift_const);
786 /* C3.5.10 Logical (shifted register)
787 * 31 30 29 28 24 23 22 21 20 16 15 10 9 5 4 0
788 * +----+-----+-----------+-------+---+------+--------+------+------+
789 * | sf | opc | 0 1 0 1 0 | shift | N | Rm | imm6 | Rn | Rd |
790 * +----+-----+-----------+-------+---+------+--------+------+------+
792 static void disas_logic_reg(DisasContext *s, uint32_t insn)
794 TCGv_i64 tcg_rd, tcg_rn, tcg_rm;
795 unsigned int sf, opc, shift_type, invert, rm, shift_amount, rn, rd;
797 sf = extract32(insn, 31, 1);
798 opc = extract32(insn, 29, 2);
799 shift_type = extract32(insn, 22, 2);
800 invert = extract32(insn, 21, 1);
801 rm = extract32(insn, 16, 5);
802 shift_amount = extract32(insn, 10, 6);
803 rn = extract32(insn, 5, 5);
804 rd = extract32(insn, 0, 5);
806 if (!sf && (shift_amount & (1 << 5))) {
807 unallocated_encoding(s);
811 tcg_rd = cpu_reg(s, rd);
813 if (opc == 1 && shift_amount == 0 && shift_type == 0 && rn == 31) {
814 /* Unshifted ORR and ORN with WZR/XZR is the standard encoding for
815 * register-register MOV and MVN, so it is worth special casing.
817 tcg_rm = cpu_reg(s, rm);
819 tcg_gen_not_i64(tcg_rd, tcg_rm);
821 tcg_gen_ext32u_i64(tcg_rd, tcg_rd);
825 tcg_gen_mov_i64(tcg_rd, tcg_rm);
827 tcg_gen_ext32u_i64(tcg_rd, tcg_rm);
833 tcg_rm = read_cpu_reg(s, rm, sf);
836 shift_reg_imm(tcg_rm, tcg_rm, sf, shift_type, shift_amount);
839 tcg_rn = cpu_reg(s, rn);
841 switch (opc | (invert << 2)) {
844 tcg_gen_and_i64(tcg_rd, tcg_rn, tcg_rm);
847 tcg_gen_or_i64(tcg_rd, tcg_rn, tcg_rm);
850 tcg_gen_xor_i64(tcg_rd, tcg_rn, tcg_rm);
854 tcg_gen_andc_i64(tcg_rd, tcg_rn, tcg_rm);
857 tcg_gen_orc_i64(tcg_rd, tcg_rn, tcg_rm);
860 tcg_gen_eqv_i64(tcg_rd, tcg_rn, tcg_rm);
868 tcg_gen_ext32u_i64(tcg_rd, tcg_rd);
872 gen_logic_CC(sf, tcg_rd);
876 /* Add/subtract (extended register) */
877 static void disas_add_sub_ext_reg(DisasContext *s, uint32_t insn)
879 unsupported_encoding(s, insn);
882 /* Add/subtract (shifted register) */
883 static void disas_add_sub_reg(DisasContext *s, uint32_t insn)
885 unsupported_encoding(s, insn);
888 /* Data-processing (3 source) */
889 static void disas_data_proc_3src(DisasContext *s, uint32_t insn)
891 unsupported_encoding(s, insn);
894 /* Add/subtract (with carry) */
895 static void disas_adc_sbc(DisasContext *s, uint32_t insn)
897 unsupported_encoding(s, insn);
900 /* Conditional compare (immediate) */
901 static void disas_cc_imm(DisasContext *s, uint32_t insn)
903 unsupported_encoding(s, insn);
906 /* Conditional compare (register) */
907 static void disas_cc_reg(DisasContext *s, uint32_t insn)
909 unsupported_encoding(s, insn);
912 /* C3.5.6 Conditional select
913 * 31 30 29 28 21 20 16 15 12 11 10 9 5 4 0
914 * +----+----+---+-----------------+------+------+-----+------+------+
915 * | sf | op | S | 1 1 0 1 0 1 0 0 | Rm | cond | op2 | Rn | Rd |
916 * +----+----+---+-----------------+------+------+-----+------+------+
918 static void disas_cond_select(DisasContext *s, uint32_t insn)
920 unsigned int sf, else_inv, rm, cond, else_inc, rn, rd;
921 TCGv_i64 tcg_rd, tcg_src;
923 if (extract32(insn, 29, 1) || extract32(insn, 11, 1)) {
924 /* S == 1 or op2<1> == 1 */
925 unallocated_encoding(s);
928 sf = extract32(insn, 31, 1);
929 else_inv = extract32(insn, 30, 1);
930 rm = extract32(insn, 16, 5);
931 cond = extract32(insn, 12, 4);
932 else_inc = extract32(insn, 10, 1);
933 rn = extract32(insn, 5, 5);
934 rd = extract32(insn, 0, 5);
937 /* silly no-op write; until we use movcond we must special-case
938 * this to avoid a dead temporary across basic blocks.
943 tcg_rd = cpu_reg(s, rd);
945 if (cond >= 0x0e) { /* condition "always" */
946 tcg_src = read_cpu_reg(s, rn, sf);
947 tcg_gen_mov_i64(tcg_rd, tcg_src);
949 /* OPTME: we could use movcond here, at the cost of duplicating
950 * a lot of the arm_gen_test_cc() logic.
952 int label_match = gen_new_label();
953 int label_continue = gen_new_label();
955 arm_gen_test_cc(cond, label_match);
957 tcg_src = cpu_reg(s, rm);
959 if (else_inv && else_inc) {
960 tcg_gen_neg_i64(tcg_rd, tcg_src);
961 } else if (else_inv) {
962 tcg_gen_not_i64(tcg_rd, tcg_src);
963 } else if (else_inc) {
964 tcg_gen_addi_i64(tcg_rd, tcg_src, 1);
966 tcg_gen_mov_i64(tcg_rd, tcg_src);
969 tcg_gen_ext32u_i64(tcg_rd, tcg_rd);
971 tcg_gen_br(label_continue);
973 gen_set_label(label_match);
974 tcg_src = read_cpu_reg(s, rn, sf);
975 tcg_gen_mov_i64(tcg_rd, tcg_src);
977 gen_set_label(label_continue);
981 /* Data-processing (1 source) */
982 static void disas_data_proc_1src(DisasContext *s, uint32_t insn)
984 unsupported_encoding(s, insn);
987 /* Data-processing (2 source) */
988 static void disas_data_proc_2src(DisasContext *s, uint32_t insn)
990 unsupported_encoding(s, insn);
993 /* C3.5 Data processing - register */
994 static void disas_data_proc_reg(DisasContext *s, uint32_t insn)
996 switch (extract32(insn, 24, 5)) {
997 case 0x0a: /* Logical (shifted register) */
998 disas_logic_reg(s, insn);
1000 case 0x0b: /* Add/subtract */
1001 if (insn & (1 << 21)) { /* (extended register) */
1002 disas_add_sub_ext_reg(s, insn);
1004 disas_add_sub_reg(s, insn);
1007 case 0x1b: /* Data-processing (3 source) */
1008 disas_data_proc_3src(s, insn);
1011 switch (extract32(insn, 21, 3)) {
1012 case 0x0: /* Add/subtract (with carry) */
1013 disas_adc_sbc(s, insn);
1015 case 0x2: /* Conditional compare */
1016 if (insn & (1 << 11)) { /* (immediate) */
1017 disas_cc_imm(s, insn);
1018 } else { /* (register) */
1019 disas_cc_reg(s, insn);
1022 case 0x4: /* Conditional select */
1023 disas_cond_select(s, insn);
1025 case 0x6: /* Data-processing */
1026 if (insn & (1 << 30)) { /* (1 source) */
1027 disas_data_proc_1src(s, insn);
1028 } else { /* (2 source) */
1029 disas_data_proc_2src(s, insn);
1033 unallocated_encoding(s);
1038 unallocated_encoding(s);
1043 /* C3.6 Data processing - SIMD and floating point */
1044 static void disas_data_proc_simd_fp(DisasContext *s, uint32_t insn)
1046 unsupported_encoding(s, insn);
1049 /* C3.1 A64 instruction index by encoding */
1050 static void disas_a64_insn(CPUARMState *env, DisasContext *s)
1054 insn = arm_ldl_code(env, s->pc, s->bswap_code);
1058 switch (extract32(insn, 25, 4)) {
1059 case 0x0: case 0x1: case 0x2: case 0x3: /* UNALLOCATED */
1060 unallocated_encoding(s);
1062 case 0x8: case 0x9: /* Data processing - immediate */
1063 disas_data_proc_imm(s, insn);
1065 case 0xa: case 0xb: /* Branch, exception generation and system insns */
1066 disas_b_exc_sys(s, insn);
1071 case 0xe: /* Loads and stores */
1072 disas_ldst(s, insn);
1075 case 0xd: /* Data processing - register */
1076 disas_data_proc_reg(s, insn);
1079 case 0xf: /* Data processing - SIMD and floating point */
1080 disas_data_proc_simd_fp(s, insn);
1083 assert(FALSE); /* all 15 cases should be handled above */
1087 /* if we allocated any temporaries, free them here */
1091 void gen_intermediate_code_internal_a64(ARMCPU *cpu,
1092 TranslationBlock *tb,
1095 CPUState *cs = CPU(cpu);
1096 CPUARMState *env = &cpu->env;
1097 DisasContext dc1, *dc = &dc1;
1099 uint16_t *gen_opc_end;
1101 target_ulong pc_start;
1102 target_ulong next_page_start;
1110 gen_opc_end = tcg_ctx.gen_opc_buf + OPC_MAX_SIZE;
1112 dc->is_jmp = DISAS_NEXT;
1114 dc->singlestep_enabled = cs->singlestep_enabled;
1120 dc->condexec_mask = 0;
1121 dc->condexec_cond = 0;
1122 #if !defined(CONFIG_USER_ONLY)
1125 dc->vfp_enabled = 0;
1129 init_tmp_a64_array(dc);
1131 next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
1134 max_insns = tb->cflags & CF_COUNT_MASK;
1135 if (max_insns == 0) {
1136 max_insns = CF_COUNT_MASK;
1141 tcg_clear_temp_count();
1144 if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
1145 QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
1146 if (bp->pc == dc->pc) {
1147 gen_exception_insn(dc, 0, EXCP_DEBUG);
1148 /* Advance PC so that clearing the breakpoint will
1149 invalidate this TB. */
1151 goto done_generating;
1157 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
1161 tcg_ctx.gen_opc_instr_start[lj++] = 0;
1164 tcg_ctx.gen_opc_pc[lj] = dc->pc;
1165 tcg_ctx.gen_opc_instr_start[lj] = 1;
1166 tcg_ctx.gen_opc_icount[lj] = num_insns;
1169 if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
1173 if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP | CPU_LOG_TB_OP_OPT))) {
1174 tcg_gen_debug_insn_start(dc->pc);
1177 disas_a64_insn(env, dc);
1179 if (tcg_check_temp_count()) {
1180 fprintf(stderr, "TCG temporary leak before "TARGET_FMT_lx"\n",
1184 /* Translation stops when a conditional branch is encountered.
1185 * Otherwise the subsequent code could get translated several times.
1186 * Also stop translation when a page boundary is reached. This
1187 * ensures prefetch aborts occur at the right place.
1190 } while (!dc->is_jmp && tcg_ctx.gen_opc_ptr < gen_opc_end &&
1191 !cs->singlestep_enabled &&
1193 dc->pc < next_page_start &&
1194 num_insns < max_insns);
1196 if (tb->cflags & CF_LAST_IO) {
1200 if (unlikely(cs->singlestep_enabled) && dc->is_jmp != DISAS_EXC) {
1201 /* Note that this means single stepping WFI doesn't halt the CPU.
1202 * For conditional branch insns this is harmless unreachable code as
1203 * gen_goto_tb() has already handled emitting the debug exception
1204 * (and thus a tb-jump is not possible when singlestepping).
1206 assert(dc->is_jmp != DISAS_TB_JUMP);
1207 if (dc->is_jmp != DISAS_JUMP) {
1208 gen_a64_set_pc_im(dc->pc);
1210 gen_exception(EXCP_DEBUG);
1212 switch (dc->is_jmp) {
1214 gen_goto_tb(dc, 1, dc->pc);
1219 /* indicate that the hash table must be used to find the next TB */
1227 /* This is a special case because we don't want to just halt the CPU
1228 * if trying to debug across a WFI.
1230 gen_helper_wfi(cpu_env);
1236 gen_tb_end(tb, num_insns);
1237 *tcg_ctx.gen_opc_ptr = INDEX_op_end;
1240 if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
1241 qemu_log("----------------\n");
1242 qemu_log("IN: %s\n", lookup_symbol(pc_start));
1243 log_target_disas(env, pc_start, dc->pc - pc_start,
1244 dc->thumb | (dc->bswap_code << 1));
1249 j = tcg_ctx.gen_opc_ptr - tcg_ctx.gen_opc_buf;
1252 tcg_ctx.gen_opc_instr_start[lj++] = 0;
1255 tb->size = dc->pc - pc_start;
1256 tb->icount = num_insns;