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[PATCH v2 08/23] target/i386: Use DISAS_EOB* in gen_movl_seg_T0
From: |
Richard Henderson |
Subject: |
[PATCH v2 08/23] target/i386: Use DISAS_EOB* in gen_movl_seg_T0 |
Date: |
Tue, 6 Sep 2022 11:09:17 +0100 |
Set is_jmp properly in gen_movl_seg_T0, so that the callers
need to nothing special.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/i386/tcg/translate.c | 36 +++++-------------------------------
1 file changed, 5 insertions(+), 31 deletions(-)
diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index 778ee4ed4c..ea35d3e9b4 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -2432,13 +2432,15 @@ static void gen_movl_seg_T0(DisasContext *s, X86Seg
seg_reg)
because ss32 may change. For R_SS, translation must always
stop as a special handling must be done to disable hardware
interrupts for the next instruction */
- if (seg_reg == R_SS || (CODE32(s) && seg_reg < R_FS)) {
- s->base.is_jmp = DISAS_TOO_MANY;
+ if (seg_reg == R_SS) {
+ s->base.is_jmp = DISAS_EOB_INHIBIT_IRQ;
+ } else if (CODE32(s) && seg_reg < R_FS) {
+ s->base.is_jmp = DISAS_EOB_NEXT;
}
} else {
gen_op_movl_seg_T0_vm(s, seg_reg);
if (seg_reg == R_SS) {
- s->base.is_jmp = DISAS_TOO_MANY;
+ s->base.is_jmp = DISAS_EOB_INHIBIT_IRQ;
}
}
}
@@ -5682,26 +5684,12 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
ot = gen_pop_T0(s);
gen_movl_seg_T0(s, reg);
gen_pop_update(s, ot);
- /* Note that reg == R_SS in gen_movl_seg_T0 always sets is_jmp. */
- if (s->base.is_jmp) {
- gen_update_eip_next(s);
- if (reg == R_SS) {
- s->flags &= ~HF_TF_MASK;
- gen_eob_inhibit_irq(s, true);
- } else {
- gen_eob(s);
- }
- }
break;
case 0x1a1: /* pop fs */
case 0x1a9: /* pop gs */
ot = gen_pop_T0(s);
gen_movl_seg_T0(s, (b >> 3) & 7);
gen_pop_update(s, ot);
- if (s->base.is_jmp) {
- gen_update_eip_next(s);
- gen_eob(s);
- }
break;
/**************************/
@@ -5748,16 +5736,6 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
goto illegal_op;
gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
gen_movl_seg_T0(s, reg);
- /* Note that reg == R_SS in gen_movl_seg_T0 always sets is_jmp. */
- if (s->base.is_jmp) {
- gen_update_eip_next(s);
- if (reg == R_SS) {
- s->flags &= ~HF_TF_MASK;
- gen_eob_inhibit_irq(s, true);
- } else {
- gen_eob(s);
- }
- }
break;
case 0x8c: /* mov Gv, seg */
modrm = x86_ldub_code(env, s);
@@ -5956,10 +5934,6 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
gen_movl_seg_T0(s, op);
/* then put the data */
gen_op_mov_reg_v(s, ot, reg, s->T1);
- if (s->base.is_jmp) {
- gen_update_eip_next(s);
- gen_eob(s);
- }
break;
/************************/
--
2.34.1
- [PATCH v2 10/23] target/i386: USe DISAS_EOB_ONLY, (continued)
- [PATCH v2 10/23] target/i386: USe DISAS_EOB_ONLY, Richard Henderson, 2022/09/06
- [PATCH v2 15/23] target/i386: Create eip_next_*, Richard Henderson, 2022/09/06
- [PATCH v2 17/23] target/i386: Create gen_jmp_rel, Richard Henderson, 2022/09/06
- [PATCH v2 19/23] target/i386: Use gen_jmp_rel for gen_jcc, Richard Henderson, 2022/09/06
- [PATCH v2 08/23] target/i386: Use DISAS_EOB* in gen_movl_seg_T0,
Richard Henderson <=
- [PATCH v2 09/23] target/i386: Use DISAS_EOB_NEXT, Richard Henderson, 2022/09/06
- [PATCH v2 11/23] target/i386: Create cur_insn_len, cur_insn_len_i32, Richard Henderson, 2022/09/06
- [PATCH v2 13/23] target/i386: Introduce DISAS_JUMP, Richard Henderson, 2022/09/06
- [PATCH v2 20/23] target/i386: Use gen_jmp_rel for gen_repz*, Richard Henderson, 2022/09/06