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tcg-x86_64: implement setcond 

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Richard Henderson 2010-01-20 09:16:49 -08:00 committed by Aurelien Jarno
parent 401d466da9
commit 8f9db67c84
1 changed files with 33 additions and 5 deletions
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38
tcg/x86_64/tcg-target.c
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@ -499,26 +499,42 @@ static void tcg_out_jxx(TCGContext *s, int opc, int label_index)
}
}
static void tcg_out_brcond(TCGContext *s, int cond,
TCGArg arg1, TCGArg arg2, int const_arg2,
int label_index, int rexw)
static void tcg_out_cmp(TCGContext *s, TCGArg arg1, TCGArg arg2,
int const_arg2, int rexw)
{
if (const_arg2) {
if (arg2 == 0) {
/* test r, r */
tcg_out_modrm(s, 0x85 | rexw, arg1, arg1);
} else {
if (rexw)
if (rexw) {
tgen_arithi64(s, ARITH_CMP, arg1, arg2);
else
} else {
tgen_arithi32(s, ARITH_CMP, arg1, arg2);
}
}
} else {
tcg_out_modrm(s, 0x01 | (ARITH_CMP << 3) | rexw, arg2, arg1);
}
}
static void tcg_out_brcond(TCGContext *s, int cond,
TCGArg arg1, TCGArg arg2, int const_arg2,
int label_index, int rexw)
{
tcg_out_cmp(s, arg1, arg2, const_arg2, rexw);
tcg_out_jxx(s, tcg_cond_to_jcc[cond], label_index);
}
static void tcg_out_setcond(TCGContext *s, int cond, TCGArg dest,
TCGArg arg1, TCGArg arg2, int const_arg2, int rexw)
{
tcg_out_cmp(s, arg1, arg2, const_arg2, rexw);
/* setcc */
tcg_out_modrm(s, 0x90 | tcg_cond_to_jcc[cond] | P_EXT | P_REXB_RM, 0, dest);
tgen_arithi32(s, ARITH_AND, dest, 0xff);
}
#if defined(CONFIG_SOFTMMU)
#include "../../softmmu_defs.h"
@ -1201,6 +1217,15 @@ static inline void tcg_out_op(TCGContext *s, int opc, const TCGArg *args,
tcg_out_modrm(s, 0x8b, args[0], args[1]);
break;
case INDEX_op_setcond_i32:
tcg_out_setcond(s, args[3], args[0], args[1], args[2],
const_args[2], 0);
break;
case INDEX_op_setcond_i64:
tcg_out_setcond(s, args[3], args[0], args[1], args[2],
const_args[2], P_REXW);
break;
case INDEX_op_qemu_ld8u:
tcg_out_qemu_ld(s, args, 0);
break;
@ -1380,6 +1405,9 @@ static const TCGTargetOpDef x86_64_op_defs[] = {
{ INDEX_op_ext16u_i64, { "r", "r"} },
{ INDEX_op_ext32u_i64, { "r", "r"} },
{ INDEX_op_setcond_i32, { "r", "r", "ri" } },
{ INDEX_op_setcond_i64, { "r", "r", "re" } },
{ INDEX_op_qemu_ld8u, { "r", "L" } },
{ INDEX_op_qemu_ld8s, { "r", "L" } },
{ INDEX_op_qemu_ld16u, { "r", "L" } },