2 * Tiny Code Generator for QEMU
4 * Copyright (c) 2009, 2011 Stefan Weil
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 * - See TODO comments in code.
29 /* Marker for missing code. */
32 fprintf(stderr, "TODO %s:%u: %s()\n", \
33 __FILE__, __LINE__, __func__); \
37 /* Bitfield n...m (in 32 bit value). */
38 #define BITS(n, m) (((0xffffffffU << (31 - n)) >> (31 - n + m)) << m)
40 /* Macros used in tcg_target_op_defs. */
43 #if TCG_TARGET_REG_BITS == 32
48 #if TARGET_LONG_BITS > TCG_TARGET_REG_BITS
56 /* TODO: documentation. */
57 static const TCGTargetOpDef tcg_target_op_defs[] = {
58 { INDEX_op_exit_tb, { NULL } },
59 { INDEX_op_goto_tb, { NULL } },
60 { INDEX_op_br, { NULL } },
62 { INDEX_op_ld8u_i32, { R, R } },
63 { INDEX_op_ld8s_i32, { R, R } },
64 { INDEX_op_ld16u_i32, { R, R } },
65 { INDEX_op_ld16s_i32, { R, R } },
66 { INDEX_op_ld_i32, { R, R } },
67 { INDEX_op_st8_i32, { R, R } },
68 { INDEX_op_st16_i32, { R, R } },
69 { INDEX_op_st_i32, { R, R } },
71 { INDEX_op_add_i32, { R, RI, RI } },
72 { INDEX_op_sub_i32, { R, RI, RI } },
73 { INDEX_op_mul_i32, { R, RI, RI } },
74 #if TCG_TARGET_HAS_div_i32
75 { INDEX_op_div_i32, { R, R, R } },
76 { INDEX_op_divu_i32, { R, R, R } },
77 { INDEX_op_rem_i32, { R, R, R } },
78 { INDEX_op_remu_i32, { R, R, R } },
79 #elif TCG_TARGET_HAS_div2_i32
80 { INDEX_op_div2_i32, { R, R, "0", "1", R } },
81 { INDEX_op_divu2_i32, { R, R, "0", "1", R } },
83 /* TODO: Does R, RI, RI result in faster code than R, R, RI?
84 If both operands are constants, we can optimize. */
85 { INDEX_op_and_i32, { R, RI, RI } },
86 #if TCG_TARGET_HAS_andc_i32
87 { INDEX_op_andc_i32, { R, RI, RI } },
89 #if TCG_TARGET_HAS_eqv_i32
90 { INDEX_op_eqv_i32, { R, RI, RI } },
92 #if TCG_TARGET_HAS_nand_i32
93 { INDEX_op_nand_i32, { R, RI, RI } },
95 #if TCG_TARGET_HAS_nor_i32
96 { INDEX_op_nor_i32, { R, RI, RI } },
98 { INDEX_op_or_i32, { R, RI, RI } },
99 #if TCG_TARGET_HAS_orc_i32
100 { INDEX_op_orc_i32, { R, RI, RI } },
102 { INDEX_op_xor_i32, { R, RI, RI } },
103 { INDEX_op_shl_i32, { R, RI, RI } },
104 { INDEX_op_shr_i32, { R, RI, RI } },
105 { INDEX_op_sar_i32, { R, RI, RI } },
106 #if TCG_TARGET_HAS_rot_i32
107 { INDEX_op_rotl_i32, { R, RI, RI } },
108 { INDEX_op_rotr_i32, { R, RI, RI } },
110 #if TCG_TARGET_HAS_deposit_i32
111 { INDEX_op_deposit_i32, { R, "0", R } },
114 { INDEX_op_brcond_i32, { R, RI } },
116 { INDEX_op_setcond_i32, { R, R, RI } },
117 #if TCG_TARGET_REG_BITS == 64
118 { INDEX_op_setcond_i64, { R, R, RI } },
119 #endif /* TCG_TARGET_REG_BITS == 64 */
121 #if TCG_TARGET_REG_BITS == 32
122 /* TODO: Support R, R, R, R, RI, RI? Will it be faster? */
123 { INDEX_op_add2_i32, { R, R, R, R, R, R } },
124 { INDEX_op_sub2_i32, { R, R, R, R, R, R } },
125 { INDEX_op_brcond2_i32, { R, R, RI, RI } },
126 { INDEX_op_mulu2_i32, { R, R, R, R } },
127 { INDEX_op_setcond2_i32, { R, R, R, RI, RI } },
130 #if TCG_TARGET_HAS_not_i32
131 { INDEX_op_not_i32, { R, R } },
133 #if TCG_TARGET_HAS_neg_i32
134 { INDEX_op_neg_i32, { R, R } },
137 #if TCG_TARGET_REG_BITS == 64
138 { INDEX_op_ld8u_i64, { R, R } },
139 { INDEX_op_ld8s_i64, { R, R } },
140 { INDEX_op_ld16u_i64, { R, R } },
141 { INDEX_op_ld16s_i64, { R, R } },
142 { INDEX_op_ld32u_i64, { R, R } },
143 { INDEX_op_ld32s_i64, { R, R } },
144 { INDEX_op_ld_i64, { R, R } },
146 { INDEX_op_st8_i64, { R, R } },
147 { INDEX_op_st16_i64, { R, R } },
148 { INDEX_op_st32_i64, { R, R } },
149 { INDEX_op_st_i64, { R, R } },
151 { INDEX_op_add_i64, { R, RI, RI } },
152 { INDEX_op_sub_i64, { R, RI, RI } },
153 { INDEX_op_mul_i64, { R, RI, RI } },
154 #if TCG_TARGET_HAS_div_i64
155 { INDEX_op_div_i64, { R, R, R } },
156 { INDEX_op_divu_i64, { R, R, R } },
157 { INDEX_op_rem_i64, { R, R, R } },
158 { INDEX_op_remu_i64, { R, R, R } },
159 #elif TCG_TARGET_HAS_div2_i64
160 { INDEX_op_div2_i64, { R, R, "0", "1", R } },
161 { INDEX_op_divu2_i64, { R, R, "0", "1", R } },
163 { INDEX_op_and_i64, { R, RI, RI } },
164 #if TCG_TARGET_HAS_andc_i64
165 { INDEX_op_andc_i64, { R, RI, RI } },
167 #if TCG_TARGET_HAS_eqv_i64
168 { INDEX_op_eqv_i64, { R, RI, RI } },
170 #if TCG_TARGET_HAS_nand_i64
171 { INDEX_op_nand_i64, { R, RI, RI } },
173 #if TCG_TARGET_HAS_nor_i64
174 { INDEX_op_nor_i64, { R, RI, RI } },
176 { INDEX_op_or_i64, { R, RI, RI } },
177 #if TCG_TARGET_HAS_orc_i64
178 { INDEX_op_orc_i64, { R, RI, RI } },
180 { INDEX_op_xor_i64, { R, RI, RI } },
181 { INDEX_op_shl_i64, { R, RI, RI } },
182 { INDEX_op_shr_i64, { R, RI, RI } },
183 { INDEX_op_sar_i64, { R, RI, RI } },
184 #if TCG_TARGET_HAS_rot_i64
185 { INDEX_op_rotl_i64, { R, RI, RI } },
186 { INDEX_op_rotr_i64, { R, RI, RI } },
188 #if TCG_TARGET_HAS_deposit_i64
189 { INDEX_op_deposit_i64, { R, "0", R } },
191 { INDEX_op_brcond_i64, { R, RI } },
193 #if TCG_TARGET_HAS_ext8s_i64
194 { INDEX_op_ext8s_i64, { R, R } },
196 #if TCG_TARGET_HAS_ext16s_i64
197 { INDEX_op_ext16s_i64, { R, R } },
199 #if TCG_TARGET_HAS_ext32s_i64
200 { INDEX_op_ext32s_i64, { R, R } },
202 #if TCG_TARGET_HAS_ext8u_i64
203 { INDEX_op_ext8u_i64, { R, R } },
205 #if TCG_TARGET_HAS_ext16u_i64
206 { INDEX_op_ext16u_i64, { R, R } },
208 #if TCG_TARGET_HAS_ext32u_i64
209 { INDEX_op_ext32u_i64, { R, R } },
211 { INDEX_op_ext_i32_i64, { R, R } },
212 { INDEX_op_extu_i32_i64, { R, R } },
213 #if TCG_TARGET_HAS_bswap16_i64
214 { INDEX_op_bswap16_i64, { R, R } },
216 #if TCG_TARGET_HAS_bswap32_i64
217 { INDEX_op_bswap32_i64, { R, R } },
219 #if TCG_TARGET_HAS_bswap64_i64
220 { INDEX_op_bswap64_i64, { R, R } },
222 #if TCG_TARGET_HAS_not_i64
223 { INDEX_op_not_i64, { R, R } },
225 #if TCG_TARGET_HAS_neg_i64
226 { INDEX_op_neg_i64, { R, R } },
228 #endif /* TCG_TARGET_REG_BITS == 64 */
230 { INDEX_op_qemu_ld_i32, { R, L } },
231 { INDEX_op_qemu_ld_i64, { R64, L } },
233 { INDEX_op_qemu_st_i32, { R, S } },
234 { INDEX_op_qemu_st_i64, { R64, S } },
236 #if TCG_TARGET_HAS_ext8s_i32
237 { INDEX_op_ext8s_i32, { R, R } },
239 #if TCG_TARGET_HAS_ext16s_i32
240 { INDEX_op_ext16s_i32, { R, R } },
242 #if TCG_TARGET_HAS_ext8u_i32
243 { INDEX_op_ext8u_i32, { R, R } },
245 #if TCG_TARGET_HAS_ext16u_i32
246 { INDEX_op_ext16u_i32, { R, R } },
249 #if TCG_TARGET_HAS_bswap16_i32
250 { INDEX_op_bswap16_i32, { R, R } },
252 #if TCG_TARGET_HAS_bswap32_i32
253 { INDEX_op_bswap32_i32, { R, R } },
256 { INDEX_op_mb, { } },
260 static const TCGTargetOpDef *tcg_target_op_def(TCGOpcode op)
262 int i, n = ARRAY_SIZE(tcg_target_op_defs);
264 for (i = 0; i < n; ++i) {
265 if (tcg_target_op_defs[i].op == op) {
266 return &tcg_target_op_defs[i];
272 static const int tcg_target_reg_alloc_order[] = {
277 #if 0 /* used for TCG_REG_CALL_STACK */
283 #if TCG_TARGET_NB_REGS >= 16
295 #if MAX_OPC_PARAM_IARGS != 6
296 # error Fix needed, number of supported input arguments changed!
299 static const int tcg_target_call_iarg_regs[] = {
304 #if 0 /* used for TCG_REG_CALL_STACK */
309 #if TCG_TARGET_REG_BITS == 32
310 /* 32 bit hosts need 2 * MAX_OPC_PARAM_IARGS registers. */
312 #if TCG_TARGET_NB_REGS >= 16
319 # error Too few input registers available
324 static const int tcg_target_call_oarg_regs[] = {
326 #if TCG_TARGET_REG_BITS == 32
331 #ifdef CONFIG_DEBUG_TCG
332 static const char *const tcg_target_reg_names[TCG_TARGET_NB_REGS] = {
341 #if TCG_TARGET_NB_REGS >= 16
350 #if TCG_TARGET_NB_REGS >= 32
372 static bool patch_reloc(tcg_insn_unit *code_ptr, int type,
373 intptr_t value, intptr_t addend)
375 /* tcg_out_reloc always uses the same type, addend. */
376 tcg_debug_assert(type == sizeof(tcg_target_long));
377 tcg_debug_assert(addend == 0);
378 tcg_debug_assert(value != 0);
379 if (TCG_TARGET_REG_BITS == 32) {
380 tcg_patch32(code_ptr, value);
382 tcg_patch64(code_ptr, value);
387 /* Parse target specific constraints. */
388 static const char *target_parse_constraint(TCGArgConstraint *ct,
389 const char *ct_str, TCGType type)
393 case 'L': /* qemu_ld constraint */
394 case 'S': /* qemu_st constraint */
395 ct->regs = BIT(TCG_TARGET_NB_REGS) - 1;
403 #if defined(CONFIG_DEBUG_TCG_INTERPRETER)
404 /* Show current bytecode. Used by tcg interpreter. */
405 void tci_disas(uint8_t opc)
407 const TCGOpDef *def = &tcg_op_defs[opc];
408 fprintf(stderr, "TCG %s %u, %u, %u\n",
409 def->name, def->nb_oargs, def->nb_iargs, def->nb_cargs);
413 /* Write value (native size). */
414 static void tcg_out_i(TCGContext *s, tcg_target_ulong v)
416 if (TCG_TARGET_REG_BITS == 32) {
424 static void tcg_out_op_t(TCGContext *s, TCGOpcode op)
430 /* Write register. */
431 static void tcg_out_r(TCGContext *s, TCGArg t0)
433 tcg_debug_assert(t0 < TCG_TARGET_NB_REGS);
437 /* Write register or constant (native size). */
438 static void tcg_out_ri(TCGContext *s, int const_arg, TCGArg arg)
441 tcg_debug_assert(const_arg == 1);
442 tcg_out8(s, TCG_CONST);
449 /* Write register or constant (32 bit). */
450 static void tcg_out_ri32(TCGContext *s, int const_arg, TCGArg arg)
453 tcg_debug_assert(const_arg == 1);
454 tcg_out8(s, TCG_CONST);
461 #if TCG_TARGET_REG_BITS == 64
462 /* Write register or constant (64 bit). */
463 static void tcg_out_ri64(TCGContext *s, int const_arg, TCGArg arg)
466 tcg_debug_assert(const_arg == 1);
467 tcg_out8(s, TCG_CONST);
476 static void tci_out_label(TCGContext *s, TCGLabel *label)
478 if (label->has_value) {
479 tcg_out_i(s, label->u.value);
480 tcg_debug_assert(label->u.value);
482 tcg_out_reloc(s, s->code_ptr, sizeof(tcg_target_ulong), label, 0);
483 s->code_ptr += sizeof(tcg_target_ulong);
487 static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg1,
490 uint8_t *old_code_ptr = s->code_ptr;
491 if (type == TCG_TYPE_I32) {
492 tcg_out_op_t(s, INDEX_op_ld_i32);
497 tcg_debug_assert(type == TCG_TYPE_I64);
498 #if TCG_TARGET_REG_BITS == 64
499 tcg_out_op_t(s, INDEX_op_ld_i64);
502 tcg_debug_assert(arg2 == (int32_t)arg2);
508 old_code_ptr[1] = s->code_ptr - old_code_ptr;
511 static bool tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg)
513 uint8_t *old_code_ptr = s->code_ptr;
514 tcg_debug_assert(ret != arg);
515 #if TCG_TARGET_REG_BITS == 32
516 tcg_out_op_t(s, INDEX_op_mov_i32);
518 tcg_out_op_t(s, INDEX_op_mov_i64);
522 old_code_ptr[1] = s->code_ptr - old_code_ptr;
526 static void tcg_out_movi(TCGContext *s, TCGType type,
527 TCGReg t0, tcg_target_long arg)
529 uint8_t *old_code_ptr = s->code_ptr;
530 uint32_t arg32 = arg;
531 if (type == TCG_TYPE_I32 || arg == arg32) {
532 tcg_out_op_t(s, INDEX_op_movi_i32);
536 tcg_debug_assert(type == TCG_TYPE_I64);
537 #if TCG_TARGET_REG_BITS == 64
538 tcg_out_op_t(s, INDEX_op_movi_i64);
545 old_code_ptr[1] = s->code_ptr - old_code_ptr;
548 static inline void tcg_out_call(TCGContext *s, tcg_insn_unit *arg)
550 uint8_t *old_code_ptr = s->code_ptr;
551 tcg_out_op_t(s, INDEX_op_call);
552 tcg_out_ri(s, 1, (uintptr_t)arg);
553 old_code_ptr[1] = s->code_ptr - old_code_ptr;
556 static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args,
557 const int *const_args)
559 uint8_t *old_code_ptr = s->code_ptr;
561 tcg_out_op_t(s, opc);
564 case INDEX_op_exit_tb:
565 tcg_out64(s, args[0]);
567 case INDEX_op_goto_tb:
568 if (s->tb_jmp_insn_offset) {
569 /* Direct jump method. */
570 /* Align for atomic patching and thread safety */
571 s->code_ptr = QEMU_ALIGN_PTR_UP(s->code_ptr, 4);
572 s->tb_jmp_insn_offset[args[0]] = tcg_current_code_size(s);
575 /* Indirect jump method. */
578 set_jmp_reset_offset(s, args[0]);
581 tci_out_label(s, arg_label(args[0]));
583 case INDEX_op_setcond_i32:
584 tcg_out_r(s, args[0]);
585 tcg_out_r(s, args[1]);
586 tcg_out_ri32(s, const_args[2], args[2]);
587 tcg_out8(s, args[3]); /* condition */
589 #if TCG_TARGET_REG_BITS == 32
590 case INDEX_op_setcond2_i32:
591 /* setcond2_i32 cond, t0, t1_low, t1_high, t2_low, t2_high */
592 tcg_out_r(s, args[0]);
593 tcg_out_r(s, args[1]);
594 tcg_out_r(s, args[2]);
595 tcg_out_ri32(s, const_args[3], args[3]);
596 tcg_out_ri32(s, const_args[4], args[4]);
597 tcg_out8(s, args[5]); /* condition */
599 #elif TCG_TARGET_REG_BITS == 64
600 case INDEX_op_setcond_i64:
601 tcg_out_r(s, args[0]);
602 tcg_out_r(s, args[1]);
603 tcg_out_ri64(s, const_args[2], args[2]);
604 tcg_out8(s, args[3]); /* condition */
607 case INDEX_op_ld8u_i32:
608 case INDEX_op_ld8s_i32:
609 case INDEX_op_ld16u_i32:
610 case INDEX_op_ld16s_i32:
611 case INDEX_op_ld_i32:
612 case INDEX_op_st8_i32:
613 case INDEX_op_st16_i32:
614 case INDEX_op_st_i32:
615 case INDEX_op_ld8u_i64:
616 case INDEX_op_ld8s_i64:
617 case INDEX_op_ld16u_i64:
618 case INDEX_op_ld16s_i64:
619 case INDEX_op_ld32u_i64:
620 case INDEX_op_ld32s_i64:
621 case INDEX_op_ld_i64:
622 case INDEX_op_st8_i64:
623 case INDEX_op_st16_i64:
624 case INDEX_op_st32_i64:
625 case INDEX_op_st_i64:
626 tcg_out_r(s, args[0]);
627 tcg_out_r(s, args[1]);
628 tcg_debug_assert(args[2] == (int32_t)args[2]);
629 tcg_out32(s, args[2]);
631 case INDEX_op_add_i32:
632 case INDEX_op_sub_i32:
633 case INDEX_op_mul_i32:
634 case INDEX_op_and_i32:
635 case INDEX_op_andc_i32: /* Optional (TCG_TARGET_HAS_andc_i32). */
636 case INDEX_op_eqv_i32: /* Optional (TCG_TARGET_HAS_eqv_i32). */
637 case INDEX_op_nand_i32: /* Optional (TCG_TARGET_HAS_nand_i32). */
638 case INDEX_op_nor_i32: /* Optional (TCG_TARGET_HAS_nor_i32). */
639 case INDEX_op_or_i32:
640 case INDEX_op_orc_i32: /* Optional (TCG_TARGET_HAS_orc_i32). */
641 case INDEX_op_xor_i32:
642 case INDEX_op_shl_i32:
643 case INDEX_op_shr_i32:
644 case INDEX_op_sar_i32:
645 case INDEX_op_rotl_i32: /* Optional (TCG_TARGET_HAS_rot_i32). */
646 case INDEX_op_rotr_i32: /* Optional (TCG_TARGET_HAS_rot_i32). */
647 tcg_out_r(s, args[0]);
648 tcg_out_ri32(s, const_args[1], args[1]);
649 tcg_out_ri32(s, const_args[2], args[2]);
651 case INDEX_op_deposit_i32: /* Optional (TCG_TARGET_HAS_deposit_i32). */
652 tcg_out_r(s, args[0]);
653 tcg_out_r(s, args[1]);
654 tcg_out_r(s, args[2]);
655 tcg_debug_assert(args[3] <= UINT8_MAX);
656 tcg_out8(s, args[3]);
657 tcg_debug_assert(args[4] <= UINT8_MAX);
658 tcg_out8(s, args[4]);
661 #if TCG_TARGET_REG_BITS == 64
662 case INDEX_op_add_i64:
663 case INDEX_op_sub_i64:
664 case INDEX_op_mul_i64:
665 case INDEX_op_and_i64:
666 case INDEX_op_andc_i64: /* Optional (TCG_TARGET_HAS_andc_i64). */
667 case INDEX_op_eqv_i64: /* Optional (TCG_TARGET_HAS_eqv_i64). */
668 case INDEX_op_nand_i64: /* Optional (TCG_TARGET_HAS_nand_i64). */
669 case INDEX_op_nor_i64: /* Optional (TCG_TARGET_HAS_nor_i64). */
670 case INDEX_op_or_i64:
671 case INDEX_op_orc_i64: /* Optional (TCG_TARGET_HAS_orc_i64). */
672 case INDEX_op_xor_i64:
673 case INDEX_op_shl_i64:
674 case INDEX_op_shr_i64:
675 case INDEX_op_sar_i64:
676 case INDEX_op_rotl_i64: /* Optional (TCG_TARGET_HAS_rot_i64). */
677 case INDEX_op_rotr_i64: /* Optional (TCG_TARGET_HAS_rot_i64). */
678 tcg_out_r(s, args[0]);
679 tcg_out_ri64(s, const_args[1], args[1]);
680 tcg_out_ri64(s, const_args[2], args[2]);
682 case INDEX_op_deposit_i64: /* Optional (TCG_TARGET_HAS_deposit_i64). */
683 tcg_out_r(s, args[0]);
684 tcg_out_r(s, args[1]);
685 tcg_out_r(s, args[2]);
686 tcg_debug_assert(args[3] <= UINT8_MAX);
687 tcg_out8(s, args[3]);
688 tcg_debug_assert(args[4] <= UINT8_MAX);
689 tcg_out8(s, args[4]);
691 case INDEX_op_div_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
692 case INDEX_op_divu_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
693 case INDEX_op_rem_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
694 case INDEX_op_remu_i64: /* Optional (TCG_TARGET_HAS_div_i64). */
697 case INDEX_op_div2_i64: /* Optional (TCG_TARGET_HAS_div2_i64). */
698 case INDEX_op_divu2_i64: /* Optional (TCG_TARGET_HAS_div2_i64). */
701 case INDEX_op_brcond_i64:
702 tcg_out_r(s, args[0]);
703 tcg_out_ri64(s, const_args[1], args[1]);
704 tcg_out8(s, args[2]); /* condition */
705 tci_out_label(s, arg_label(args[3]));
707 case INDEX_op_bswap16_i64: /* Optional (TCG_TARGET_HAS_bswap16_i64). */
708 case INDEX_op_bswap32_i64: /* Optional (TCG_TARGET_HAS_bswap32_i64). */
709 case INDEX_op_bswap64_i64: /* Optional (TCG_TARGET_HAS_bswap64_i64). */
710 case INDEX_op_not_i64: /* Optional (TCG_TARGET_HAS_not_i64). */
711 case INDEX_op_neg_i64: /* Optional (TCG_TARGET_HAS_neg_i64). */
712 case INDEX_op_ext8s_i64: /* Optional (TCG_TARGET_HAS_ext8s_i64). */
713 case INDEX_op_ext8u_i64: /* Optional (TCG_TARGET_HAS_ext8u_i64). */
714 case INDEX_op_ext16s_i64: /* Optional (TCG_TARGET_HAS_ext16s_i64). */
715 case INDEX_op_ext16u_i64: /* Optional (TCG_TARGET_HAS_ext16u_i64). */
716 case INDEX_op_ext32s_i64: /* Optional (TCG_TARGET_HAS_ext32s_i64). */
717 case INDEX_op_ext32u_i64: /* Optional (TCG_TARGET_HAS_ext32u_i64). */
718 case INDEX_op_ext_i32_i64:
719 case INDEX_op_extu_i32_i64:
720 #endif /* TCG_TARGET_REG_BITS == 64 */
721 case INDEX_op_neg_i32: /* Optional (TCG_TARGET_HAS_neg_i32). */
722 case INDEX_op_not_i32: /* Optional (TCG_TARGET_HAS_not_i32). */
723 case INDEX_op_ext8s_i32: /* Optional (TCG_TARGET_HAS_ext8s_i32). */
724 case INDEX_op_ext16s_i32: /* Optional (TCG_TARGET_HAS_ext16s_i32). */
725 case INDEX_op_ext8u_i32: /* Optional (TCG_TARGET_HAS_ext8u_i32). */
726 case INDEX_op_ext16u_i32: /* Optional (TCG_TARGET_HAS_ext16u_i32). */
727 case INDEX_op_bswap16_i32: /* Optional (TCG_TARGET_HAS_bswap16_i32). */
728 case INDEX_op_bswap32_i32: /* Optional (TCG_TARGET_HAS_bswap32_i32). */
729 tcg_out_r(s, args[0]);
730 tcg_out_r(s, args[1]);
732 case INDEX_op_div_i32: /* Optional (TCG_TARGET_HAS_div_i32). */
733 case INDEX_op_divu_i32: /* Optional (TCG_TARGET_HAS_div_i32). */
734 case INDEX_op_rem_i32: /* Optional (TCG_TARGET_HAS_div_i32). */
735 case INDEX_op_remu_i32: /* Optional (TCG_TARGET_HAS_div_i32). */
736 tcg_out_r(s, args[0]);
737 tcg_out_ri32(s, const_args[1], args[1]);
738 tcg_out_ri32(s, const_args[2], args[2]);
740 case INDEX_op_div2_i32: /* Optional (TCG_TARGET_HAS_div2_i32). */
741 case INDEX_op_divu2_i32: /* Optional (TCG_TARGET_HAS_div2_i32). */
744 #if TCG_TARGET_REG_BITS == 32
745 case INDEX_op_add2_i32:
746 case INDEX_op_sub2_i32:
747 tcg_out_r(s, args[0]);
748 tcg_out_r(s, args[1]);
749 tcg_out_r(s, args[2]);
750 tcg_out_r(s, args[3]);
751 tcg_out_r(s, args[4]);
752 tcg_out_r(s, args[5]);
754 case INDEX_op_brcond2_i32:
755 tcg_out_r(s, args[0]);
756 tcg_out_r(s, args[1]);
757 tcg_out_ri32(s, const_args[2], args[2]);
758 tcg_out_ri32(s, const_args[3], args[3]);
759 tcg_out8(s, args[4]); /* condition */
760 tci_out_label(s, arg_label(args[5]));
762 case INDEX_op_mulu2_i32:
763 tcg_out_r(s, args[0]);
764 tcg_out_r(s, args[1]);
765 tcg_out_r(s, args[2]);
766 tcg_out_r(s, args[3]);
769 case INDEX_op_brcond_i32:
770 tcg_out_r(s, args[0]);
771 tcg_out_ri32(s, const_args[1], args[1]);
772 tcg_out8(s, args[2]); /* condition */
773 tci_out_label(s, arg_label(args[3]));
775 case INDEX_op_qemu_ld_i32:
776 tcg_out_r(s, *args++);
777 tcg_out_r(s, *args++);
778 if (TARGET_LONG_BITS > TCG_TARGET_REG_BITS) {
779 tcg_out_r(s, *args++);
781 tcg_out_i(s, *args++);
783 case INDEX_op_qemu_ld_i64:
784 tcg_out_r(s, *args++);
785 if (TCG_TARGET_REG_BITS == 32) {
786 tcg_out_r(s, *args++);
788 tcg_out_r(s, *args++);
789 if (TARGET_LONG_BITS > TCG_TARGET_REG_BITS) {
790 tcg_out_r(s, *args++);
792 tcg_out_i(s, *args++);
794 case INDEX_op_qemu_st_i32:
795 tcg_out_r(s, *args++);
796 tcg_out_r(s, *args++);
797 if (TARGET_LONG_BITS > TCG_TARGET_REG_BITS) {
798 tcg_out_r(s, *args++);
800 tcg_out_i(s, *args++);
802 case INDEX_op_qemu_st_i64:
803 tcg_out_r(s, *args++);
804 if (TCG_TARGET_REG_BITS == 32) {
805 tcg_out_r(s, *args++);
807 tcg_out_r(s, *args++);
808 if (TARGET_LONG_BITS > TCG_TARGET_REG_BITS) {
809 tcg_out_r(s, *args++);
811 tcg_out_i(s, *args++);
815 case INDEX_op_mov_i32: /* Always emitted via tcg_out_mov. */
816 case INDEX_op_mov_i64:
817 case INDEX_op_movi_i32: /* Always emitted via tcg_out_movi. */
818 case INDEX_op_movi_i64:
819 case INDEX_op_call: /* Always emitted via tcg_out_call. */
823 old_code_ptr[1] = s->code_ptr - old_code_ptr;
826 static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, TCGReg arg1,
829 uint8_t *old_code_ptr = s->code_ptr;
830 if (type == TCG_TYPE_I32) {
831 tcg_out_op_t(s, INDEX_op_st_i32);
836 tcg_debug_assert(type == TCG_TYPE_I64);
837 #if TCG_TARGET_REG_BITS == 64
838 tcg_out_op_t(s, INDEX_op_st_i64);
846 old_code_ptr[1] = s->code_ptr - old_code_ptr;
849 static inline bool tcg_out_sti(TCGContext *s, TCGType type, TCGArg val,
850 TCGReg base, intptr_t ofs)
855 /* Test if a constant matches the constraint. */
856 static int tcg_target_const_match(tcg_target_long val, TCGType type,
857 const TCGArgConstraint *arg_ct)
859 /* No need to return 0 or 1, 0 or != 0 is good enough. */
860 return arg_ct->ct & TCG_CT_CONST;
863 static void tcg_target_init(TCGContext *s)
865 #if defined(CONFIG_DEBUG_TCG_INTERPRETER)
866 const char *envval = getenv("DEBUG_TCG");
868 qemu_set_log(strtol(envval, NULL, 0));
872 /* The current code uses uint8_t for tcg operations. */
873 tcg_debug_assert(tcg_op_defs_max <= UINT8_MAX);
875 /* Registers available for 32 bit operations. */
876 tcg_target_available_regs[TCG_TYPE_I32] = BIT(TCG_TARGET_NB_REGS) - 1;
877 /* Registers available for 64 bit operations. */
878 tcg_target_available_regs[TCG_TYPE_I64] = BIT(TCG_TARGET_NB_REGS) - 1;
879 /* TODO: Which registers should be set here? */
880 tcg_target_call_clobber_regs = BIT(TCG_TARGET_NB_REGS) - 1;
882 s->reserved_regs = 0;
883 tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK);
885 /* We use negative offsets from "sp" so that we can distinguish
886 stores that might pretend to be call arguments. */
887 tcg_set_frame(s, TCG_REG_CALL_STACK,
888 -CPU_TEMP_BUF_NLONGS * sizeof(long),
889 CPU_TEMP_BUF_NLONGS * sizeof(long));
892 /* Generate global QEMU prologue and epilogue code. */
893 static inline void tcg_target_qemu_prologue(TCGContext *s)