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[Qemu-devel] [PATCH 10/57] target-i386: clean up sahf
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 10/57] target-i386: clean up sahf |
Date: |
Tue, 19 Feb 2013 09:39:44 -0800 |
From: Paolo Bonzini <address@hidden>
Discard CC_DST and set s->cc_op immediately after computing EFLAGS.
Signed-off-by: Paolo Bonzini <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
target-i386/translate.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/target-i386/translate.c b/target-i386/translate.c
index 80483c0..64564e0 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -6502,10 +6502,12 @@ static target_ulong disas_insn(CPUX86State *env,
DisasContext *s,
if (s->cc_op != CC_OP_DYNAMIC)
gen_op_set_cc_op(s->cc_op);
gen_compute_eflags(cpu_cc_src);
+ tcg_gen_discard_tl(cpu_cc_dst);
+ s->cc_op = CC_OP_EFLAGS;
+
tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, CC_O);
tcg_gen_andi_tl(cpu_T[0], cpu_T[0], CC_S | CC_Z | CC_A | CC_P | CC_C);
tcg_gen_or_tl(cpu_cc_src, cpu_cc_src, cpu_T[0]);
- s->cc_op = CC_OP_EFLAGS;
break;
case 0x9f: /* lahf */
if (CODE64(s) && !(s->cpuid_ext3_features & CPUID_EXT3_LAHF_LM))
--
1.8.1.2
- [Qemu-devel] [PATCH 09/57] target-i386: compute eflags outside rcl/rcr helper, (continued)
- [Qemu-devel] [PATCH 09/57] target-i386: compute eflags outside rcl/rcr helper, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 06/57] target-i386: drop cc_op argument of gen_jcc1, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 46/57] target-i386: Implement ANDN, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 54/57] target-i386: Implement ADX extension, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 20/57] target-i386: Move CC discards to set_cc_op, Richard Henderson, 2013/02/19
- Re: [Qemu-devel] [PATCH v3 00/57] target-i386 flags improvements and bmi/adx extensions, Paolo Bonzini, 2013/02/19
- [Qemu-devel] [PATCH 51/57] target-i386: Implement PDEP, PEXT, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 12/57] target-i386: factor gen_op_set_cc_op/tcg_gen_discard_tl around computing flags, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 14/57] target-i386: Introduce set_cc_op, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 55/57] target-i386: Use clz/ctz for bsf/bsr helpers, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 10/57] target-i386: clean up sahf,
Richard Henderson <=
- [Qemu-devel] [PATCH 13/57] target-i386: Name the cc_op enumeration, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 11/57] target-i386: use gen_jcc1 to compile loopz, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 34/57] target-i386: expand cmov via movcond, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 07/57] target-i386: move carry computation for inc/dec closer to gen_op_set_cc_op, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 57/57] target-i386: Add CC_OP_CLR, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 29/57] target-i386: introduce gen_prepare_cc, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 21/57] target-i386: do not call helper to compute ZF/SF, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 53/57] target-i386: Implement RORX, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 15/57] target-i386: Don't clobber s->cc_op in gen_update_cc_op, Richard Henderson, 2013/02/19