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authorRichard Henderson <rth@twiddle.net>2010-05-21 08:30:32 -0700
committerAurelien Jarno <aurelien@aurel32.net>2010-05-21 16:20:22 +0000
commitb3e66df71acb52f9798f3da039470952c4b4c7c3 (patch)
tree6173112e5065bb361f03bf8c1274f4367286be8a /tcg
parent0566d387378fe02e89f27d3608474e216baa72d7 (diff)
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tcg-i386: Tidy xchg.
Define and use OPC_XCHG_ax_r32. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'tcg')
-rw-r--r--tcg/i386/tcg-target.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c
index bf8e9d5..5d5e5e4 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);