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[Qemu-devel] [PATCH 33/57] target-i386: introduce gen_cmovcc1
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 33/57] target-i386: introduce gen_cmovcc1 |
Date: |
Tue, 19 Feb 2013 09:40:07 -0800 |
From: Paolo Bonzini <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
target-i386/translate.c | 72 ++++++++++++++++++++++++++-----------------------
1 file changed, 38 insertions(+), 34 deletions(-)
diff --git a/target-i386/translate.c b/target-i386/translate.c
index c83b56f..4b0a701 100644
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -2414,6 +2414,40 @@ static inline void gen_jcc(DisasContext *s, int b,
}
}
+static void gen_cmovcc1(CPUX86State *env, DisasContext *s, int ot, int b,
+ int modrm, int reg)
+{
+ int l1, mod = (modrm >> 6) & 3;
+ TCGv t0 = tcg_temp_local_new();
+
+ if (mod != 3) {
+ int reg_addr, offset_addr;
+ gen_lea_modrm(env, s, modrm, ®_addr, &offset_addr);
+ gen_op_ld_v(ot + s->mem_index, t0, cpu_A0);
+ } else {
+ int rm = (modrm & 7) | REX_B(s);
+ gen_op_mov_v_reg(ot, t0, rm);
+ }
+
+ l1 = gen_new_label();
+ gen_jcc1(s, b ^ 1, l1);
+ switch (ot) {
+#ifdef TARGET_X86_64
+ case OT_LONG:
+ tcg_gen_mov_tl(cpu_regs[reg], t0);
+ gen_set_label(l1);
+ tcg_gen_ext32u_tl(cpu_regs[reg], cpu_regs[reg]);
+ break;
+#endif
+ default:
+ gen_op_mov_reg_v(ot, reg, t0);
+ gen_set_label(l1);
+ break;
+ }
+
+ tcg_temp_free(t0);
+}
+
static inline void gen_op_movl_T0_seg(int seg_reg)
{
tcg_gen_ld32u_tl(cpu_T[0], cpu_env,
@@ -6427,40 +6461,10 @@ static target_ulong disas_insn(CPUX86State *env,
DisasContext *s,
gen_ldst_modrm(env, s, modrm, OT_BYTE, OR_TMP0, 1);
break;
case 0x140 ... 0x14f: /* cmov Gv, Ev */
- {
- int l1;
- TCGv t0;
-
- ot = dflag + OT_WORD;
- modrm = cpu_ldub_code(env, s->pc++);
- reg = ((modrm >> 3) & 7) | rex_r;
- mod = (modrm >> 6) & 3;
- t0 = tcg_temp_local_new();
- if (mod != 3) {
- gen_lea_modrm(env, s, modrm, ®_addr, &offset_addr);
- gen_op_ld_v(ot + s->mem_index, t0, cpu_A0);
- } else {
- rm = (modrm & 7) | REX_B(s);
- gen_op_mov_v_reg(ot, t0, rm);
- }
-#ifdef TARGET_X86_64
- if (ot == OT_LONG) {
- /* XXX: specific Intel behaviour ? */
- l1 = gen_new_label();
- gen_jcc1(s, b ^ 1, l1);
- tcg_gen_mov_tl(cpu_regs[reg], t0);
- gen_set_label(l1);
- tcg_gen_ext32u_tl(cpu_regs[reg], cpu_regs[reg]);
- } else
-#endif
- {
- l1 = gen_new_label();
- gen_jcc1(s, b ^ 1, l1);
- gen_op_mov_reg_v(ot, reg, t0);
- gen_set_label(l1);
- }
- tcg_temp_free(t0);
- }
+ ot = dflag + OT_WORD;
+ modrm = cpu_ldub_code(env, s->pc++);
+ reg = ((modrm >> 3) & 7) | rex_r;
+ gen_cmovcc1(env, s, ot, b, modrm, reg);
break;
/************************/
--
1.8.1.2
- [Qemu-devel] [PATCH 25/57] target-i386: optimize setbe, (continued)
- [Qemu-devel] [PATCH 25/57] target-i386: optimize setbe, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 24/57] target-i386: change gen_setcc_slow_T0 to gen_setcc_slow, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 26/57] target-i386: optimize setle, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 22/57] target-i386: use inverted setcond when computing NS or NZ, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 56/57] target-i386: Implement tzcnt and fix lzcnt, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 31/57] target-i386: inline gen_prepare_cc_slow, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 36/57] target-i386: use gen_op for cmps/scas, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 41/57] target-i386: Make helper_cc_compute_{all, c} const, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 49/57] target-i386: Implement BZHI, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 37/57] target-i386: introduce gen_jcc1_noeob, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 33/57] target-i386: introduce gen_cmovcc1,
Richard Henderson <=
- [Qemu-devel] [PATCH 39/57] target-i386: optimize flags checking after sub using CC_SRCT, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 42/57] target-i386: Use CC_SRC2 for ADC and SBB, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 28/57] target-i386: introduce CCPrepare, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 30/57] target-i386: use CCPrepare to generate conditional jumps, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 44/57] target-i386: Decode the VEX prefixes, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 40/57] target-i386: Don't reference ENV through most of cc helpers, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 43/57] target-i386: Tidy prefix parsing, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 08/57] target-i386: move eflags computation closer to gen_op_set_cc_op, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 48/57] target-i386: Implement BLSR, BLSMSK, BLSI, Richard Henderson, 2013/02/19
- [Qemu-devel] [PATCH 45/57] target-i386: Implement MOVBE, Richard Henderson, 2013/02/19