diff options
Diffstat (limited to 'tcg/x86_64/tcg-target.c')
| -rw-r--r-- | tcg/x86_64/tcg-target.c | 48 |
1 files changed, 34 insertions, 14 deletions
diff --git a/tcg/x86_64/tcg-target.c b/tcg/x86_64/tcg-target.c index 5378e85..a26e714 100644 --- a/tcg/x86_64/tcg-target.c +++ b/tcg/x86_64/tcg-target.c @@ -363,6 +363,20 @@ static inline void tcg_out_movi(TCGContext *s, TCGType type, } } +static void tcg_out_goto(TCGContext *s, int call, uint8_t *target) +{ + int32_t disp; + + disp = target - s->code_ptr - 5; + if (disp == (target - s->code_ptr - 5)) { + tcg_out8(s, call ? 0xe8 : 0xe9); + tcg_out32(s, disp); + } else { + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_R10, (tcg_target_long) target); + tcg_out_modrm(s, 0xff, call ? 2 : 4, TCG_REG_R10); + } +} + static inline void tcg_out_ld(TCGContext *s, TCGType type, int ret, int arg1, tcg_target_long arg2) { @@ -383,7 +397,13 @@ static inline void tcg_out_st(TCGContext *s, TCGType type, int arg, static inline void tgen_arithi32(TCGContext *s, int c, int r0, int32_t val) { - if (val == (int8_t)val) { + if ((c == ARITH_ADD && val == 1) || (c == ARITH_SUB && val == -1)) { + /* inc */ + tcg_out_modrm(s, 0xff, 0, r0); + } else if ((c == ARITH_ADD && val == -1) || (c == ARITH_SUB && val == 1)) { + /* dec */ + tcg_out_modrm(s, 0xff, 1, r0); + } else if (val == (int8_t)val) { tcg_out_modrm(s, 0x83, c, r0); tcg_out8(s, val); } else if (c == ARITH_AND && val == 0xffu) { @@ -400,7 +420,13 @@ static inline void tgen_arithi32(TCGContext *s, int c, int r0, int32_t val) static inline void tgen_arithi64(TCGContext *s, int c, int r0, int64_t val) { - if (val == (int8_t)val) { + if ((c == ARITH_ADD && val == 1) || (c == ARITH_SUB && val == -1)) { + /* inc */ + tcg_out_modrm(s, 0xff | P_REXW, 0, r0); + } else if ((c == ARITH_ADD && val == -1) || (c == ARITH_SUB && val == 1)) { + /* dec */ + tcg_out_modrm(s, 0xff | P_REXW, 1, r0); + } else if (val == (int8_t)val) { tcg_out_modrm(s, 0x83 | P_REXW, c, r0); tcg_out8(s, val); } else if (c == ARITH_AND && val == 0xffu) { @@ -508,6 +534,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, int opc) { int addr_reg, data_reg, r0, r1, mem_index, s_bits, bswap, rexw; + int32_t offset; #if defined(CONFIG_SOFTMMU) uint8_t *label1_ptr, *label2_ptr; #endif @@ -558,9 +585,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, /* XXX: move that code at the end of the TB */ tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_RSI, mem_index); - tcg_out8(s, 0xe8); - tcg_out32(s, (tcg_target_long)qemu_ld_helpers[s_bits] - - (tcg_target_long)s->code_ptr - 4); + tcg_out_goto(s, 1, qemu_ld_helpers[s_bits]); switch(opc) { case 0 | 4: @@ -760,9 +785,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, break; } tcg_out_movi(s, TCG_TYPE_I32, TCG_REG_RDX, mem_index); - tcg_out8(s, 0xe8); - tcg_out32(s, (tcg_target_long)qemu_st_helpers[s_bits] - - (tcg_target_long)s->code_ptr - 4); + tcg_out_goto(s, 1, qemu_st_helpers[s_bits]); /* jmp label2 */ tcg_out8(s, 0xeb); @@ -839,8 +862,7 @@ static inline void tcg_out_op(TCGContext *s, int opc, const TCGArg *args, switch(opc) { case INDEX_op_exit_tb: tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_RAX, args[0]); - tcg_out8(s, 0xe9); /* jmp tb_ret_addr */ - tcg_out32(s, tb_ret_addr - s->code_ptr - 4); + tcg_out_goto(s, 0, tb_ret_addr); break; case INDEX_op_goto_tb: if (s->tb_jmp_offset) { @@ -859,16 +881,14 @@ static inline void tcg_out_op(TCGContext *s, int opc, const TCGArg *args, break; case INDEX_op_call: if (const_args[0]) { - tcg_out8(s, 0xe8); - tcg_out32(s, args[0] - (tcg_target_long)s->code_ptr - 4); + tcg_out_goto(s, 1, (void *) args[0]); } else { tcg_out_modrm(s, 0xff, 2, args[0]); } break; case INDEX_op_jmp: if (const_args[0]) { - tcg_out8(s, 0xe9); - tcg_out32(s, args[0] - (tcg_target_long)s->code_ptr - 4); + tcg_out_goto(s, 0, (void *) args[0]); } else { tcg_out_modrm(s, 0xff, 4, args[0]); } |