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converted sign extension ops to TCG 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4481 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2008-05-17 19:24:07 +00:00
parent d189633603
commit e108dd01ce
2 changed files with 31 additions and 76 deletions
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61
target-i386/op.c
View File

@ -263,67 +263,6 @@ void OPPROTO op_cmpxchg8b(void)
#endif
/* sign extend */
void OPPROTO op_movsbl_T0_T0(void)
{
T0 = (int8_t)T0;
}
void OPPROTO op_movzbl_T0_T0(void)
{
T0 = (uint8_t)T0;
}
void OPPROTO op_movswl_T0_T0(void)
{
T0 = (int16_t)T0;
}
void OPPROTO op_movzwl_T0_T0(void)
{
T0 = (uint16_t)T0;
}
void OPPROTO op_movswl_EAX_AX(void)
{
EAX = (uint32_t)((int16_t)EAX);
}
#ifdef TARGET_X86_64
void OPPROTO op_movslq_T0_T0(void)
{
T0 = (int32_t)T0;
}
void OPPROTO op_movslq_RAX_EAX(void)
{
EAX = (int32_t)EAX;
}
#endif
void OPPROTO op_movsbw_AX_AL(void)
{
EAX = (EAX & ~0xffff) | ((int8_t)EAX & 0xffff);
}
void OPPROTO op_movslq_EDX_EAX(void)
{
EDX = (uint32_t)((int32_t)EAX >> 31);
}
void OPPROTO op_movswl_DX_AX(void)
{
EDX = (EDX & ~0xffff) | (((int16_t)EAX >> 15) & 0xffff);
}
#ifdef TARGET_X86_64
void OPPROTO op_movsqo_RDX_RAX(void)
{
EDX = (int64_t)EAX >> 63;
}
#endif
/* string ops helpers */
void OPPROTO op_addl_ESI_T0(void)

46
target-i386/translate.c
View File

@ -4109,24 +4109,40 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
case 0x98: /* CWDE/CBW */
#ifdef TARGET_X86_64
if (dflag == 2) {
gen_op_movslq_RAX_EAX();
gen_op_mov_TN_reg(OT_LONG, 0, R_EAX);
tcg_gen_ext32s_tl(cpu_T[0], cpu_T[0]);
gen_op_mov_reg_T0(OT_QUAD, R_EAX);
} else
#endif
if (dflag == 1)
gen_op_movswl_EAX_AX();
else
gen_op_movsbw_AX_AL();
if (dflag == 1) {
gen_op_mov_TN_reg(OT_WORD, 0, R_EAX);
tcg_gen_ext16s_tl(cpu_T[0], cpu_T[0]);
gen_op_mov_reg_T0(OT_LONG, R_EAX);
} else {
gen_op_mov_TN_reg(OT_BYTE, 0, R_EAX);
tcg_gen_ext8s_tl(cpu_T[0], cpu_T[0]);
gen_op_mov_reg_T0(OT_WORD, R_EAX);
}
break;
case 0x99: /* CDQ/CWD */
#ifdef TARGET_X86_64
if (dflag == 2) {
gen_op_movsqo_RDX_RAX();
gen_op_mov_TN_reg(OT_QUAD, 0, R_EAX);
tcg_gen_sari_tl(cpu_T[0], cpu_T[0], 63);
gen_op_mov_reg_T0(OT_QUAD, R_EDX);
} else
#endif
if (dflag == 1)
gen_op_movslq_EDX_EAX();
else
gen_op_movswl_DX_AX();
if (dflag == 1) {
gen_op_mov_TN_reg(OT_LONG, 0, R_EAX);
tcg_gen_ext32s_tl(cpu_T[0], cpu_T[0]);
tcg_gen_sari_tl(cpu_T[0], cpu_T[0], 31);
gen_op_mov_reg_T0(OT_LONG, R_EDX);
} else {
gen_op_mov_TN_reg(OT_WORD, 0, R_EAX);
tcg_gen_ext16s_tl(cpu_T[0], cpu_T[0]);
tcg_gen_sari_tl(cpu_T[0], cpu_T[0], 15);
gen_op_mov_reg_T0(OT_WORD, R_EDX);
}
break;
case 0x1af: /* imul Gv, Ev */
case 0x69: /* imul Gv, Ev, I */
@ -4479,17 +4495,17 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
gen_op_mov_TN_reg(ot, 0, rm);
switch(ot | (b & 8)) {
case OT_BYTE:
gen_op_movzbl_T0_T0();
tcg_gen_ext8u_tl(cpu_T[0], cpu_T[0]);
break;
case OT_BYTE | 8:
gen_op_movsbl_T0_T0();
tcg_gen_ext8s_tl(cpu_T[0], cpu_T[0]);
break;
case OT_WORD:
gen_op_movzwl_T0_T0();
tcg_gen_ext16u_tl(cpu_T[0], cpu_T[0]);
break;
default:
case OT_WORD | 8:
gen_op_movswl_T0_T0();
tcg_gen_ext16s_tl(cpu_T[0], cpu_T[0]);
break;
}
gen_op_mov_reg_T0(d_ot, reg);
@ -6481,7 +6497,7 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
gen_op_mov_TN_reg(OT_LONG, 0, rm);
/* sign extend */
if (d_ot == OT_QUAD)
gen_op_movslq_T0_T0();
tcg_gen_ext32s_tl(cpu_T[0], cpu_T[0]);
gen_op_mov_reg_T0(d_ot, reg);
} else {
gen_lea_modrm(s, modrm, &reg_addr, &offset_addr);