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[Qemu-devel] [PATCH 19/21] tcg-i386: Tidy xchg.
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 19/21] tcg-i386: Tidy xchg. |
Date: |
Wed, 14 Apr 2010 11:32:24 -0700 |
Define and use OPC_XCHG_ax_r32.
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/i386/tcg-target.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c
index b806d18..d8367b0 100644
--- a/tcg/i386/tcg-target.c
+++ b/tcg/i386/tcg-target.c
@@ -197,6 +197,7 @@ 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)
@@ -796,7 +797,8 @@ 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);
--
1.6.2.5
- Re: [Qemu-devel] [PATCH 05/21] tcg-i386: Tidy bswap operations., (continued)
[Qemu-devel] [PATCH 10/21] tcg-i386: Tidy immediate arithmetic operations., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 06/21] tcg-i386: Tidy shift operations., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 11/21] tcg-i386: Tidy non-immediate arithmetic operations., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 09/21] tcg-i386: Tidy jumps., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 08/21] tcg-i386: Eliminate extra move from qemu_ld64., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 07/21] tcg-i386: Tidy move operations., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 13/21] tcg-i386: Tidy push/pop., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 12/21] tcg-i386: Tidy movi., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 19/21] tcg-i386: Tidy xchg.,
Richard Henderson <=
[Qemu-devel] [PATCH 16/21] tcg-i386: Tidy setcc., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 15/21] tcg-i386: Tidy ret., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 17/21] tcg-i386: Tidy unary arithmetic., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 18/21] tcg-i386: Tidy multiply., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 14/21] tcg-i386: Tidy calls., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 21/21] tcg-i386: Use lea for three-operand add., Richard Henderson, 2010/04/14
[Qemu-devel] [PATCH 20/21] tcg-i386: Tidy lea., Richard Henderson, 2010/04/14