From b3e66df71acb52f9798f3da039470952c4b4c7c3 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Fri, 21 May 2010 08:30:32 -0700 Subject: tcg-i386: Tidy xchg. Define and use OPC_XCHG_ax_r32. Signed-off-by: Richard Henderson Signed-off-by: Aurelien Jarno --- tcg/i386/tcg-target.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c index bf8e9d5e72..5d5e5e4b98 100644 --- a/tcg/i386/tcg-target.c +++ b/tcg/i386/tcg-target.c @@ -192,6 +192,7 @@ static inline int tcg_target_const_match(tcg_target_long val, #define OPC_SHIFT_Ib (0xc1) #define OPC_SHIFT_cl (0xd3) #define OPC_TESTL (0x85) +#define OPC_XCHG_ax_r32 (0x90) #define OPC_GRP3_Ev (0xf7) #define OPC_GRP5 (0xff) @@ -770,7 +771,8 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, break; case 3: if (data_reg == TCG_REG_EDX) { - tcg_out_opc(s, 0x90 + TCG_REG_EDX); /* xchg %edx, %eax */ + /* xchg %edx, %eax */ + tcg_out_opc(s, OPC_XCHG_ax_r32 + TCG_REG_EDX); tcg_out_mov(s, data_reg2, TCG_REG_EAX); } else { tcg_out_mov(s, data_reg, TCG_REG_EAX); -- cgit v1.2.3