/* * Tiny Code Generator for QEMU * * Copyright (c) 2009, 2011 Stefan Weil * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ /* TODO list: * - See TODO comments in code. */ /* Marker for missing code. */ #define TODO() \ do { \ fprintf(stderr, "TODO %s:%u: %s()\n", \ __FILE__, __LINE__, __func__); \ tcg_abort(); \ } while (0) /* Single bit n. */ #define BIT(n) (1 << (n)) /* Bitfield n...m (in 32 bit value). */ #define BITS(n, m) (((0xffffffffU << (31 - n)) >> (31 - n + m)) << m) /* Used for function call generation. */ #define TCG_REG_CALL_STACK TCG_REG_R4 #define TCG_TARGET_STACK_ALIGN 16 #define TCG_TARGET_CALL_STACK_OFFSET 0 /* TODO: documentation. */ static uint8_t *tb_ret_addr; /* Macros used in tcg_target_op_defs. */ #define R "r" #define RI "ri" #if TCG_TARGET_REG_BITS == 32 # define R64 "r", "r" #else # define R64 "r" #endif #if TARGET_LONG_BITS > TCG_TARGET_REG_BITS # define L "L", "L" # define S "S", "S" #else # define L "L" # define S "S" #endif /* TODO: documentation. */ static const TCGTargetOpDef tcg_target_op_defs[] = { { INDEX_op_exit_tb, { NULL } }, { INDEX_op_goto_tb, { NULL } }, { INDEX_op_call, { RI } }, { INDEX_op_br, { NULL } }, { INDEX_op_mov_i32, { R, R } }, { INDEX_op_movi_i32, { R } }, { INDEX_op_ld8u_i32, { R, R } }, { INDEX_op_ld8s_i32, { R, R } }, { INDEX_op_ld16u_i32, { R, R } }, { INDEX_op_ld16s_i32, { R, R } }, { INDEX_op_ld_i32, { R, R } }, { INDEX_op_st8_i32, { R, R } }, { INDEX_op_st16_i32, { R, R } }, { INDEX_op_st_i32, { R, R } }, { INDEX_op_add_i32, { R, RI, RI } }, { INDEX_op_sub_i32, { R, RI, RI } }, { INDEX_op_mul_i32, { R, RI, RI } }, #if TCG_TARGET_HAS_div_i32 { INDEX_op_div_i32, { R, R, R } }, { INDEX_op_divu_i32, { R, R, R } }, { INDEX_op_rem_i32, { R, R, R } }, { INDEX_op_remu_i32, { R, R, R } }, #elif TCG_TARGET_HAS_div2_i32 { INDEX_op_div2_i32, { R, R, "0", "1", R } }, { INDEX_op_divu2_i32, { R, R, "0", "1", R } }, #endif /* TODO: Does R, RI, RI result in faster code than R, R, RI? If both operands are constants, we can optimize. */ { INDEX_op_and_i32, { R, RI, RI } }, #if TCG_TARGET_HAS_andc_i32 { INDEX_op_andc_i32, { R, RI, RI } }, #endif #if TCG_TARGET_HAS_eqv_i32 { INDEX_op_eqv_i32, { R, RI, RI } }, #endif #if TCG_TARGET_HAS_nand_i32 { INDEX_op_nand_i32, { R, RI, RI } }, #endif #if TCG_TARGET_HAS_nor_i32 { INDEX_op_nor_i32, { R, RI, RI } }, #endif { INDEX_op_or_i32, { R, RI, RI } }, #if TCG_TARGET_HAS_orc_i32 { INDEX_op_orc_i32, { R, RI, RI } }, #endif { INDEX_op_xor_i32, { R, RI, RI } }, { INDEX_op_shl_i32, { R, RI, RI } }, { INDEX_op_shr_i32, { R, RI, RI } }, { INDEX_op_sar_i32, { R, RI, RI } }, #if TCG_TARGET_HAS_rot_i32 { INDEX_op_rotl_i32, { R, RI, RI } }, { INDEX_op_rotr_i32, { R, RI, RI } }, #endif #if TCG_TARGET_HAS_deposit_i32 { INDEX_op_deposit_i32, { R, "0", R } }, #endif { INDEX_op_brcond_i32, { R, RI } }, { INDEX_op_setcond_i32, { R, R, RI } }, #if TCG_TARGET_REG_BITS == 64 { INDEX_op_setcond_i64, { R, R, RI } }, #endif /* TCG_TARGET_REG_BITS == 64 */ #if TCG_TARGET_REG_BITS == 32 /* TODO: Support R, R, R, R, RI, RI? Will it be faster? */ { INDEX_op_add2_i32, { R, R, R, R, R, R } }, { INDEX_op_sub2_i32, { R, R, R, R, R, R } }, { INDEX_op_brcond2_i32, { R, R, RI, RI } }, { INDEX_op_mulu2_i32, { R, R, R, R } }, { INDEX_op_setcond2_i32, { R, R, R, RI, RI } }, #endif #if TCG_TARGET_HAS_not_i32 { INDEX_op_not_i32, { R, R } }, #endif #if TCG_TARGET_HAS_neg_i32 { INDEX_op_neg_i32, { R, R } }, #endif #if TCG_TARGET_REG_BITS == 64 { INDEX_op_mov_i64, { R, R } }, { INDEX_op_movi_i64, { R } }, { INDEX_op_ld8u_i64, { R, R } }, { INDEX_op_ld8s_i64, { R, R } }, { INDEX_op_ld16u_i64, { R, R } }, { INDEX_op_ld16s_i64, { R, R } }, { INDEX_op_ld32u_i64, { R, R } }, { INDEX_op_ld32s_i64, { R, R } }, { INDEX_op_ld_i64, { R, R } }, { INDEX_op_st8_i64, { R, R } }, { INDEX_op_st16_i64, { R, R } }, { INDEX_op_st32_i64, { R, R } }, { INDEX_op_st_i64, { R, R } }, { INDEX_op_add_i64, { R, RI, RI } }, { INDEX_op_sub_i64, { R, RI, RI } }, { INDEX_op_mul_i64, { R, RI, RI } }, #if TCG_TARGET_HAS_div_i64 { INDEX_op_div_i64, { R, R, R } }, { INDEX_op_divu_i64, { R, R, R } }, { INDEX_op_rem_i64, { R, R, R } }, { INDEX_op_remu_i64, { R, R, R } }, #elif TCG_TARGET_HAS_div2_i64 { INDEX_op_div2_i64, { R, R, "0", "1", R } }, { INDEX_op_divu2_i64, { R, R, "0", "1", R } }, #endif { INDEX_op_and_i64, { R, RI, RI } }, #if TCG_TARGET_HAS_andc_i64 { INDEX_op_andc_i64, { R, RI, RI } }, #endif #if TCG_TARGET_HAS_eqv_i64 { INDEX_op_eqv_i64, { R, RI, RI } }, #endif #if TCG_TARGET_HAS_nand_i64 { INDEX_op_nand_i64, { R, RI, RI } }, #endif #if TCG_TARGET_HAS_nor_i64 { INDEX_op_nor_i64, { R, RI, RI } }, #endif { INDEX_op_or_i64, { R, RI, RI } }, #if TCG_TARGET_HAS_orc_i64 { INDEX_op_orc_i64, { R, RI, RI } }, #endif { INDEX_op_xor_i64, { R, RI, RI } }, { INDEX_op_shl_i64, { R, RI, RI } }, { INDEX_op_shr_i64, { R, RI, RI } }, { INDEX_op_sar_i64, { R, RI, RI } }, #if TCG_TARGET_HAS_rot_i64 { INDEX_op_rotl_i64, { R, RI, RI } }, { INDEX_op_rotr_i64, { R, RI, RI } }, #endif #if TCG_TARGET_HAS_deposit_i64 { INDEX_op_deposit_i64, { R, "0", R } }, #endif { INDEX_op_brcond_i64, { R, RI } }, #if TCG_TARGET_HAS_ext8s_i64 { INDEX_op_ext8s_i64, { R, R } }, #endif #if TCG_TARGET_HAS_ext16s_i64 { INDEX_op_ext16s_i64, { R, R } }, #endif #if TCG_TARGET_HAS_ext32s_i64 { INDEX_op_ext32s_i64, { R, R } }, #endif #if TCG_TARGET_HAS_ext8u_i64 { INDEX_op_ext8u_i64, { R, R } }, #endif #if TCG_TARGET_HAS_ext16u_i64 { INDEX_op_ext16u_i64, { R, R } }, #endif #if TCG_TARGET_HAS_ext32u_i64 { INDEX_op_ext32u_i64, { R, R } }, #endif #if TCG_TARGET_HAS_bswap16_i64 { INDEX_op_bswap16_i64, { R, R } }, #endif #if TCG_TARGET_HAS_bswap32_i64 { INDEX_op_bswap32_i64, { R, R } }, #endif #if TCG_TARGET_HAS_bswap64_i64 { INDEX_op_bswap64_i64, { R, R } }, #endif #if TCG_TARGET_HAS_not_i64 { INDEX_op_not_i64, { R, R } }, #endif #if TCG_TARGET_HAS_neg_i64 { INDEX_op_neg_i64, { R, R } }, #endif #endif /* TCG_TARGET_REG_BITS == 64 */ { INDEX_op_qemu_ld8u, { R, L } }, { INDEX_op_qemu_ld8s, { R, L } }, { INDEX_op_qemu_ld16u, { R, L } }, { INDEX_op_qemu_ld16s, { R, L } }, { INDEX_op_qemu_ld32, { R, L } }, #if TCG_TARGET_REG_BITS == 64 { INDEX_op_qemu_ld32u, { R, L } }, { INDEX_op_qemu_ld32s, { R, L } }, #endif { INDEX_op_qemu_ld64, { R64, L } }, { INDEX_op_qemu_st8, { R, S } }, { INDEX_op_qemu_st16, { R, S } }, { INDEX_op_qemu_st32, { R, S } }, { INDEX_op_qemu_st64, { R64, S } }, #if TCG_TARGET_HAS_ext8s_i32 { INDEX_op_ext8s_i32, { R, R } }, #endif #if TCG_TARGET_HAS_ext16s_i32 { INDEX_op_ext16s_i32, { R, R } }, #endif #if TCG_TARGET_HAS_ext8u_i32 { INDEX_op_ext8u_i32, { R, R } }, #endif #if TCG_TARGET_HAS_ext16u_i32 { INDEX_op_ext16u_i32, { R, R } }, #endif #if TCG_TARGET_HAS_bswap16_i32 { INDEX_op_bswap16_i32, { R, R } }, #endif #if TCG_TARGET_HAS_bswap32_i32 { INDEX_op_bswap32_i32, { R, R } }, #endif { -1 }, }; static const int tcg_target_reg_alloc_order[] = { TCG_REG_R0, TCG_REG_R1, TCG_REG_R2, TCG_REG_R3, #if 0 /* used for TCG_REG_CALL_STACK */ TCG_REG_R4, #endif TCG_REG_R5, TCG_REG_R6, TCG_REG_R7, #if TCG_TARGET_NB_REGS >= 16 TCG_REG_R8, TCG_REG_R9, TCG_REG_R10, TCG_REG_R11, TCG_REG_R12, TCG_REG_R13, TCG_REG_R14, TCG_REG_R15, #endif }; #if MAX_OPC_PARAM_IARGS != 5 # error Fix needed, number of supported input arguments changed! #endif static const int tcg_target_call_iarg_regs[] = { TCG_REG_R0, TCG_REG_R1, TCG_REG_R2, TCG_REG_R3, #if 0 /* used for TCG_REG_CALL_STACK */ TCG_REG_R4, #endif TCG_REG_R5, #if TCG_TARGET_REG_BITS == 32 /* 32 bit hosts need 2 * MAX_OPC_PARAM_IARGS registers. */ TCG_REG_R6, TCG_REG_R7, #if TCG_TARGET_NB_REGS >= 16 TCG_REG_R8, TCG_REG_R9, TCG_REG_R10, #else # error Too few input registers available #endif #endif }; static const int tcg_target_call_oarg_regs[] = { TCG_REG_R0, #if TCG_TARGET_REG_BITS == 32 TCG_REG_R1 #endif }; #ifndef NDEBUG static const char *const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { "r00", "r01", "r02", "r03", "r04", "r05", "r06", "r07", #if TCG_TARGET_NB_REGS >= 16 "r08", "r09", "r10", "r11", "r12", "r13", "r14", "r15", #if TCG_TARGET_NB_REGS >= 32 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31" #endif #endif }; #endif static void patch_reloc(uint8_t *code_ptr, int type, tcg_target_long value, tcg_target_long addend) { /* tcg_out_reloc always uses the same type, addend. */ assert(type == sizeof(tcg_target_long)); assert(addend == 0); assert(value != 0); *(tcg_target_long *)code_ptr = value; } /* Parse target specific constraints. */ static int target_parse_constraint(TCGArgConstraint *ct, const char **pct_str) { const char *ct_str = *pct_str; switch (ct_str[0]) { case 'r': case 'L': /* qemu_ld constraint */ case 'S': /* qemu_st constraint */ ct->ct |= TCG_CT_REG; tcg_regset_set32(ct->u.regs, 0, BIT(TCG_TARGET_NB_REGS) - 1); break; default: return -1; } ct_str++; *pct_str = ct_str; return 0; } #if defined(CONFIG_DEBUG_TCG_INTERPRETER) /* Show current bytecode. Used by tcg interpreter. */ void tci_disas(uint8_t opc) { const TCGOpDef *def = &tcg_op_defs[opc]; fprintf(stderr, "TCG %s %u, %u, %u\n", def->name, def->nb_oargs, def->nb_iargs, def->nb_cargs); } #endif /* Write value (native size). */ static void tcg_out_i(TCGContext *s, tcg_target_ulong v) { *(tcg_target_ulong *)s->code_ptr = v; s->code_ptr += sizeof(tcg_target_ulong); } /* Write 64 bit value. */ static void tcg_out64(TCGContext *s, uint64_t v) { *(uint64_t *)s->code_ptr = v; s->code_ptr += sizeof(v); } /* Write opcode. */ static void tcg_out_op_t(TCGContext *s, TCGOpcode op) { tcg_out8(s, op); tcg_out8(s, 0); } /* Write register. */ static void tcg_out_r(TCGContext *s, TCGArg t0) { assert(t0 < TCG_TARGET_NB_REGS); tcg_out8(s, t0); } /* Write register or constant (native size). */ static void tcg_out_ri(TCGContext *s, int const_arg, TCGArg arg) { if (const_arg) { assert(const_arg == 1); tcg_out8(s, TCG_CONST); tcg_out_i(s, arg); } else { tcg_out_r(s, arg); } } /* Write register or constant (32 bit). */ static void tcg_out_ri32(TCGContext *s, int const_arg, TCGArg arg) { if (const_arg) { assert(const_arg == 1); tcg_out8(s, TCG_CONST); tcg_out32(s, arg); } else { tcg_out_r(s, arg); } } #if TCG_TARGET_REG_BITS == 64 /* Write register or constant (64 bit). */ static void tcg_out_ri64(TCGContext *s, int const_arg, TCGArg arg) { if (const_arg) { assert(const_arg == 1); tcg_out8(s, TCG_CONST); tcg_out64(s, arg); } else { tcg_out_r(s, arg); } } #endif /* Write label. */ static void tci_out_label(TCGContext *s, TCGArg arg) { TCGLabel *label = &s->labels[arg]; if (label->has_value) { tcg_out_i(s, label->u.value); assert(label->u.value); } else { tcg_out_reloc(s, s->code_ptr, sizeof(tcg_target_ulong), arg, 0); s->code_ptr += sizeof(tcg_target_ulong); } } static void tcg_out_ld(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg1, tcg_target_long arg2) { uint8_t *old_code_ptr = s->code_ptr; if (type == TCG_TYPE_I32) { tcg_out_op_t(s, INDEX_op_ld_i32); tcg_out_r(s, ret); tcg_out_r(s, arg1); tcg_out32(s, arg2); } else { assert(type == TCG_TYPE_I64); #if TCG_TARGET_REG_BITS == 64 tcg_out_op_t(s, INDEX_op_ld_i64); tcg_out_r(s, ret); tcg_out_r(s, arg1); assert(arg2 == (int32_t)arg2); tcg_out32(s, arg2); #else TODO(); #endif } old_code_ptr[1] = s->code_ptr - old_code_ptr; } static void tcg_out_mov(TCGContext *s, TCGType type, TCGReg ret, TCGReg arg) { uint8_t *old_code_ptr = s->code_ptr; assert(ret != arg); #if TCG_TARGET_REG_BITS == 32 tcg_out_op_t(s, INDEX_op_mov_i32); #else tcg_out_op_t(s, INDEX_op_mov_i64); #endif tcg_out_r(s, ret); tcg_out_r(s, arg); old_code_ptr[1] = s->code_ptr - old_code_ptr; } static void tcg_out_movi(TCGContext *s, TCGType type, TCGReg t0, tcg_target_long arg) { uint8_t *old_code_ptr = s->code_ptr; uint32_t arg32 = arg; if (type == TCG_TYPE_I32 || arg == arg32) { tcg_out_op_t(s, INDEX_op_movi_i32); tcg_out_r(s, t0); tcg_out32(s, arg32); } else { assert(type == TCG_TYPE_I64); #if TCG_TARGET_REG_BITS == 64 tcg_out_op_t(s, INDEX_op_movi_i64); tcg_out_r(s, t0); tcg_out64(s, arg); #else TODO(); #endif } old_code_ptr[1] = s->code_ptr - old_code_ptr; } static void tcg_out_op(TCGContext *s, TCGOpcode opc, const TCGArg *args, const int *const_args) { uint8_t *old_code_ptr = s->code_ptr; tcg_out_op_t(s, opc); switch (opc) { case INDEX_op_exit_tb: tcg_out64(s, args[0]); break; case INDEX_op_goto_tb: if (s->tb_jmp_offset) { /* Direct jump method. */ assert(args[0] < ARRAY_SIZE(s->tb_jmp_offset)); s->tb_jmp_offset[args[0]] = s->code_ptr - s->code_buf; tcg_out32(s, 0); } else { /* Indirect jump method. */ TODO(); } assert(args[0] < ARRAY_SIZE(s->tb_next_offset)); s->tb_next_offset[args[0]] = s->code_ptr - s->code_buf; break; case INDEX_op_br: tci_out_label(s, args[0]); break; case INDEX_op_call: tcg_out_ri(s, const_args[0], args[0]); break; case INDEX_op_setcond_i32: tcg_out_r(s, args[0]); tcg_out_r(s, args[1]); tcg_out_ri32(s, const_args[2], args[2]); tcg_out8(s, args[3]); /* condition */ break; #if TCG_TARGET_REG_BITS == 32 case INDEX_op_setcond2_i32: /* setcond2_i32 cond, t0, t1_low, t1_high, t2_low, t2_high */ tcg_out_r(s, args[0]); tcg_out_r(s, args[1]); tcg_out_r(s, args[2]); tcg_out_ri32(s, const_args[3], args[3]); tcg_out_ri32(s, const_args[4], args[4]); tcg_out8(s, args[5]); /* condition */ break; #elif TCG_TARGET_REG_BITS == 64 case INDEX_op_setcond_i64: tcg_out_r(s, args[0]); tcg_out_r(s, args[1]); tcg_out_ri64(s, const_args[2], args[2]); tcg_out8(s, args[3]); /* condition */ break; #endif case INDEX_op_movi_i32: TODO(); /* Handled by tcg_out_movi? */ break; case INDEX_op_ld8u_i32: case INDEX_op_ld8s_i32: case INDEX_op_ld16u_i32: case INDEX_op_ld16s_i32: case INDEX_op_ld_i32: case INDEX_op_st8_i32: case INDEX_op_st16_i32: case INDEX_op_st_i32: case INDEX_op_ld8u_i64: case INDEX_op_ld8s_i64: case INDEX_op_ld16u_i64: case INDEX_op_ld16s_i64: case INDEX_op_ld32u_i64: case INDEX_op_ld32s_i64: case INDEX_op_ld_i64: case INDEX_op_st8_i64: case INDEX_op_st16_i64: case INDEX_op_st32_i64: case INDEX_op_st_i64: tcg_out_r(s, args[0]); tcg_out_r(s, args[1]); assert(args[2] == (int32_t)args[2]); tcg_out32(s, args[2]); break; case INDEX_op_add_i32: case INDEX_op_sub_i32: case INDEX_op_mul_i32: case INDEX_op_and_i32: case INDEX_op_andc_i32: /* Optional (TCG_TARGET_HAS_andc_i32). */ case INDEX_op_eqv_i32: /* Optional (TCG_TARGET_HAS_eqv_i32). */ case INDEX_op_nand_i32: /* Optional (TCG_TARGET_HAS_nand_i32). */ case INDEX_op_nor_i32: /* Optional (TCG_TARGET_HAS_nor_i32). */ case INDEX_op_or_i32: case INDEX_op_orc_i32: /* Optional (TCG_TARGET_HAS_orc_i32). */ case INDEX_op_xor_i32: case INDEX_op_shl_i32: case INDEX_op_shr_i32: case INDEX_op_sar_i32: case INDEX_op_rotl_i32: /* Optional (TCG_TARGET_HAS_rot_i32). */ case INDEX_op_rotr_i32: /* Optional (TCG_TARGET_HAS_rot_i32). */ tcg_out_r(s, args[0]); tcg_out_ri32(s, const_args[1], args[1]); tcg_out_ri32(s, const_args[2], args[2]); break; case INDEX_op_deposit_i32: /* Optional (TCG_TARGET_HAS_deposit_i32). */ tcg_out_r(s, args[0]); tcg_out_r(s, args[1]); tcg_out_r(s, args[2]); assert(args[3] <= UINT8_MAX); tcg_out8(s, args[3]); assert(args[4] <= UINT8_MAX); tcg_out8(s, args[4]); break; #if TCG_TARGET_REG_BITS == 64 case INDEX_op_mov_i64: case INDEX_op_movi_i64: TODO(); break; case INDEX_op_add_i64: case INDEX_op_sub_i64: case INDEX_op_mul_i64: case INDEX_op_and_i64: case INDEX_op_andc_i64: /* Optional (TCG_TARGET_HAS_andc_i64). */ case INDEX_op_eqv_i64: /* Optional (TCG_TARGET_HAS_eqv_i64). */ case INDEX_op_nand_i64: /* Optional (TCG_TARGET_HAS_nand_i64). */ case INDEX_op_nor_i64: /* Optional (TCG_TARGET_HAS_nor_i64). */ case INDEX_op_or_i64: case INDEX_op_orc_i64: /* Optional (TCG_TARGET_HAS_orc_i64). */ case INDEX_op_xor_i64: case INDEX_op_shl_i64: case INDEX_op_shr_i64: case INDEX_op_sar_i64: /* TODO: Implementation of rotl_i64, rotr_i64 missing in tci.c. */ case INDEX_op_rotl_i64: /* Optional (TCG_TARGET_HAS_rot_i64). */ case INDEX_op_rotr_i64: /* Optional (TCG_TARGET_HAS_rot_i64). */ tcg_out_r(s, args[0]); tcg_out_ri64(s, const_args[1], args[1]); tcg_out_ri64(s, const_args[2], args[2]); break; case INDEX_op_deposit_i64: /* Optional (TCG_TARGET_HAS_deposit_i64). */ tcg_out_r(s, args[0]); tcg_out_r(s, args[1]); tcg_out_r(s, args[2]); assert(args[3] <= UINT8_MAX); tcg_out8(s, args[3]); assert(args[4] <= UINT8_MAX); tcg_out8(s, args[4]); break; case INDEX_op_div_i64: /* Optional (TCG_TARGET_HAS_div_i64). */ case INDEX_op_divu_i64: /* Optional (TCG_TARGET_HAS_div_i64). */ case INDEX_op_rem_i64: /* Optional (TCG_TARGET_HAS_div_i64). */ case INDEX_op_remu_i64: /* Optional (TCG_TARGET_HAS_div_i64). */ TODO(); break; case INDEX_op_div2_i64: /* Optional (TCG_TARGET_HAS_div2_i64). */ case INDEX_op_divu2_i64: /* Optional (TCG_TARGET_HAS_div2_i64). */ TODO(); break; case INDEX_op_brcond_i64: tcg_out_r(s, args[0]); tcg_out_ri64(s, const_args[1], args[1]); tcg_out8(s, args[2]); /* condition */ tci_out_label(s, args[3]); break; case INDEX_op_bswap16_i64: /* Optional (TCG_TARGET_HAS_bswap16_i64). */ case INDEX_op_bswap32_i64: /* Optional (TCG_TARGET_HAS_bswap32_i64). */ case INDEX_op_bswap64_i64: /* Optional (TCG_TARGET_HAS_bswap64_i64). */ case INDEX_op_not_i64: /* Optional (TCG_TARGET_HAS_not_i64). */ case INDEX_op_neg_i64: /* Optional (TCG_TARGET_HAS_neg_i64). */ case INDEX_op_ext8s_i64: /* Optional (TCG_TARGET_HAS_ext8s_i64). */ case INDEX_op_ext8u_i64: /* Optional (TCG_TARGET_HAS_ext8u_i64). */ case INDEX_op_ext16s_i64: /* Optional (TCG_TARGET_HAS_ext16s_i64). */ case INDEX_op_ext16u_i64: /* Optional (TCG_TARGET_HAS_ext16u_i64). */ case INDEX_op_ext32s_i64: /* Optional (TCG_TARGET_HAS_ext32s_i64). */ case INDEX_op_ext32u_i64: /* Optional (TCG_TARGET_HAS_ext32u_i64). */ #endif /* TCG_TARGET_REG_BITS == 64 */ case INDEX_op_neg_i32: /* Optional (TCG_TARGET_HAS_neg_i32). */ case INDEX_op_not_i32: /* Optional (TCG_TARGET_HAS_not_i32). */ case INDEX_op_ext8s_i32: /* Optional (TCG_TARGET_HAS_ext8s_i32). */ case INDEX_op_ext16s_i32: /* Optional (TCG_TARGET_HAS_ext16s_i32). */ case INDEX_op_ext8u_i32: /* Optional (TCG_TARGET_HAS_ext8u_i32). */ case INDEX_op_ext16u_i32: /* Optional (TCG_TARGET_HAS_ext16u_i32). */ case INDEX_op_bswap16_i32: /* Optional (TCG_TARGET_HAS_bswap16_i32). */ case INDEX_op_bswap32_i32: /* Optional (TCG_TARGET_HAS_bswap32_i32). */ tcg_out_r(s, args[0]); tcg_out_r(s, args[1]); break; case INDEX_op_div_i32: /* Optional (TCG_TARGET_HAS_div_i32). */ case INDEX_op_divu_i32: /* Optional (TCG_TARGET_HAS_div_i32). */ case INDEX_op_rem_i32: /* Optional (TCG_TARGET_HAS_div_i32). */ case INDEX_op_remu_i32: /* Optional (TCG_TARGET_HAS_div_i32). */ tcg_out_r(s, args[0]); tcg_out_ri32(s, const_args[1], args[1]); tcg_out_ri32(s, const_args[2], args[2]); break; case INDEX_op_div2_i32: /* Optional (TCG_TARGET_HAS_div2_i32). */ case INDEX_op_divu2_i32: /* Optional (TCG_TARGET_HAS_div2_i32). */ TODO(); break; #if TCG_TARGET_REG_BITS == 32 case INDEX_op_add2_i32: case INDEX_op_sub2_i32: tcg_out_r(s, args[0]); tcg_out_r(s, args[1]); tcg_out_r(s, args[2]); tcg_out_r(s, args[3]); tcg_out_r(s, args[4]); tcg_out_r(s, args[5]); break; case INDEX_op_brcond2_i32: tcg_out_r(s, args[0]); tcg_out_r(s, args[1]); tcg_out_ri32(s, const_args[2], args[2]); tcg_out_ri32(s, const_args[3], args[3]); tcg_out8(s, args[4]); /* condition */ tci_out_label(s, args[5]); break; case INDEX_op_mulu2_i32: tcg_out_r(s, args[0]); tcg_out_r(s, args[1]); tcg_out_r(s, args[2]); tcg_out_r(s, args[3]); break; #endif case INDEX_op_brcond_i32: tcg_out_r(s, args[0]); tcg_out_ri32(s, const_args[1], args[1]); tcg_out8(s, args[2]); /* condition */ tci_out_label(s, args[3]); break; case INDEX_op_qemu_ld8u: case INDEX_op_qemu_ld8s: case INDEX_op_qemu_ld16u: case INDEX_op_qemu_ld16s: case INDEX_op_qemu_ld32: #if TCG_TARGET_REG_BITS == 64 case INDEX_op_qemu_ld32s: case INDEX_op_qemu_ld32u: #endif tcg_out_r(s, *args++); tcg_out_r(s, *args++); #if TARGET_LONG_BITS > TCG_TARGET_REG_BITS tcg_out_r(s, *args++); #endif #ifdef CONFIG_SOFTMMU tcg_out_i(s, *args); #endif break; case INDEX_op_qemu_ld64: tcg_out_r(s, *args++); #if TCG_TARGET_REG_BITS == 32 tcg_out_r(s, *args++); #endif tcg_out_r(s, *args++); #if TARGET_LONG_BITS > TCG_TARGET_REG_BITS tcg_out_r(s, *args++); #endif #ifdef CONFIG_SOFTMMU tcg_out_i(s, *args); #endif break; case INDEX_op_qemu_st8: case INDEX_op_qemu_st16: case INDEX_op_qemu_st32: tcg_out_r(s, *args++); tcg_out_r(s, *args++); #if TARGET_LONG_BITS > TCG_TARGET_REG_BITS tcg_out_r(s, *args++); #endif #ifdef CONFIG_SOFTMMU tcg_out_i(s, *args); #endif break; case INDEX_op_qemu_st64: tcg_out_r(s, *args++); #if TCG_TARGET_REG_BITS == 32 tcg_out_r(s, *args++); #endif tcg_out_r(s, *args++); #if TARGET_LONG_BITS > TCG_TARGET_REG_BITS tcg_out_r(s, *args++); #endif #ifdef CONFIG_SOFTMMU tcg_out_i(s, *args); #endif break; case INDEX_op_end: TODO(); break; default: fprintf(stderr, "Missing: %s\n", tcg_op_defs[opc].name); tcg_abort(); } old_code_ptr[1] = s->code_ptr - old_code_ptr; } static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, TCGReg arg1, tcg_target_long arg2) { uint8_t *old_code_ptr = s->code_ptr; if (type == TCG_TYPE_I32) { tcg_out_op_t(s, INDEX_op_st_i32); tcg_out_r(s, arg); tcg_out_r(s, arg1); tcg_out32(s, arg2); } else { assert(type == TCG_TYPE_I64); #if TCG_TARGET_REG_BITS == 64 tcg_out_op_t(s, INDEX_op_st_i64); tcg_out_r(s, arg); tcg_out_r(s, arg1); tcg_out32(s, arg2); #else TODO(); #endif } old_code_ptr[1] = s->code_ptr - old_code_ptr; } /* Test if a constant matches the constraint. */ static int tcg_target_const_match(tcg_target_long val, const TCGArgConstraint *arg_ct) { /* No need to return 0 or 1, 0 or != 0 is good enough. */ return arg_ct->ct & TCG_CT_CONST; } static void tcg_target_init(TCGContext *s) { #if defined(CONFIG_DEBUG_TCG_INTERPRETER) const char *envval = getenv("DEBUG_TCG"); if (envval) { qemu_set_log(strtol(envval, NULL, 0)); } #endif /* The current code uses uint8_t for tcg operations. */ assert(ARRAY_SIZE(tcg_op_defs) <= UINT8_MAX); /* Registers available for 32 bit operations. */ tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I32], 0, BIT(TCG_TARGET_NB_REGS) - 1); /* Registers available for 64 bit operations. */ tcg_regset_set32(tcg_target_available_regs[TCG_TYPE_I64], 0, BIT(TCG_TARGET_NB_REGS) - 1); /* TODO: Which registers should be set here? */ tcg_regset_set32(tcg_target_call_clobber_regs, 0, BIT(TCG_TARGET_NB_REGS) - 1); tcg_regset_clear(s->reserved_regs); tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK); tcg_add_target_add_op_defs(tcg_target_op_defs); tcg_set_frame(s, TCG_AREG0, offsetof(CPUArchState, temp_buf), CPU_TEMP_BUF_NLONGS * sizeof(long)); } /* Generate global QEMU prologue and epilogue code. */ static void tcg_target_qemu_prologue(TCGContext *s) { tb_ret_addr = s->code_ptr; }