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[PULL 10/37] target/i386: Create gen_update_eip_cur
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From: |
Paolo Bonzini |
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Subject: |
[PULL 10/37] target/i386: Create gen_update_eip_cur |
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Date: |
Tue, 11 Oct 2022 12:26:33 +0200 |
From: Richard Henderson <richard.henderson@linaro.org>
Like gen_update_cc_op, sync EIP before doing something
that could raise an exception. Replace all gen_jmp_im
that use s->base.pc_next.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221001140935.465607-6-richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
target/i386/tcg/translate.c | 52 ++++++++++++++++++++-----------------
1 file changed, 28 insertions(+), 24 deletions(-)
diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index 5a9c3b1e71..85253e1e17 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -511,10 +511,14 @@ static inline void gen_op_st_rm_T0_A0(DisasContext *s,
int idx, int d)
}
}
-static inline void gen_jmp_im(DisasContext *s, target_ulong pc)
+static void gen_jmp_im(DisasContext *s, target_ulong pc)
{
- tcg_gen_movi_tl(s->tmp0, pc);
- gen_op_jmp_v(s->tmp0);
+ gen_op_jmp_v(tcg_constant_tl(pc));
+}
+
+static void gen_update_eip_cur(DisasContext *s)
+{
+ gen_jmp_im(s, s->base.pc_next - s->cs_base);
}
/* Compute SEG:REG into A0. SEG is selected from the override segment
@@ -703,7 +707,7 @@ static bool gen_check_io(DisasContext *s, MemOp ot,
TCGv_i32 port,
target_ulong next_eip = s->pc - s->cs_base;
gen_update_cc_op(s);
- gen_jmp_im(s, cur_eip);
+ gen_update_eip_cur(s);
if (s->prefix & (PREFIX_REPZ | PREFIX_REPNZ)) {
svm_flags |= SVM_IOIO_REP_MASK;
}
@@ -1335,7 +1339,7 @@ static void gen_helper_fp_arith_STN_ST0(int op, int opreg)
static void gen_exception(DisasContext *s, int trapno)
{
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_raise_exception(cpu_env, tcg_const_i32(trapno));
s->base.is_jmp = DISAS_NORETURN;
}
@@ -2630,7 +2634,7 @@ static void gen_unknown_opcode(CPUX86State *env,
DisasContext *s)
static void gen_interrupt(DisasContext *s, int intno)
{
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_raise_interrupt(cpu_env, tcg_constant_i32(intno),
tcg_constant_i32(s->pc - s->base.pc_next));
s->base.is_jmp = DISAS_NORETURN;
@@ -6831,7 +6835,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
do_lret:
if (PE(s) && !VM86(s)) {
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_lret_protected(cpu_env, tcg_const_i32(dflag - 1),
tcg_const_i32(val));
} else {
@@ -7327,7 +7331,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
}
if (prefixes & PREFIX_REPZ) {
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_pause(cpu_env, tcg_const_i32(s->pc - s->base.pc_next));
s->base.is_jmp = DISAS_NORETURN;
}
@@ -7353,7 +7357,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
if (CODE64(s))
goto illegal_op;
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_into(cpu_env, tcg_const_i32(s->pc - s->base.pc_next));
break;
#ifdef WANT_ICEBP
@@ -7460,7 +7464,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
case 0x132: /* rdmsr */
if (check_cpl0(s)) {
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
if (b & 2) {
gen_helper_rdmsr(cpu_env);
} else {
@@ -7472,7 +7476,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
break;
case 0x131: /* rdtsc */
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
gen_io_start();
}
@@ -7483,7 +7487,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
break;
case 0x133: /* rdpmc */
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_rdpmc(cpu_env);
s->base.is_jmp = DISAS_NORETURN;
break;
@@ -7513,7 +7517,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
case 0x105: /* syscall */
/* XXX: is it usable in real mode ? */
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_syscall(cpu_env, tcg_const_i32(s->pc - s->base.pc_next));
/* TF handling for the syscall insn is different. The TF bit is
checked
after the syscall insn completes. This allows #DB to not be
@@ -7539,13 +7543,13 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
#endif
case 0x1a2: /* cpuid */
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_cpuid(cpu_env);
break;
case 0xf4: /* hlt */
if (check_cpl0(s)) {
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_hlt(cpu_env, tcg_const_i32(s->pc - s->base.pc_next));
s->base.is_jmp = DISAS_NORETURN;
}
@@ -7642,7 +7646,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
goto illegal_op;
}
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
tcg_gen_mov_tl(s->A0, cpu_regs[R_EAX]);
gen_extu(s->aflag, s->A0);
gen_add_A0_ds_seg(s);
@@ -7654,7 +7658,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
goto illegal_op;
}
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_mwait(cpu_env, tcg_const_i32(s->pc - s->base.pc_next));
s->base.is_jmp = DISAS_NORETURN;
break;
@@ -7732,7 +7736,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
break;
}
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_vmrun(cpu_env, tcg_const_i32(s->aflag - 1),
tcg_const_i32(s->pc - s->base.pc_next));
tcg_gen_exit_tb(NULL, 0);
@@ -7744,7 +7748,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
goto illegal_op;
}
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_vmmcall(cpu_env);
break;
@@ -7756,7 +7760,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
break;
}
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_vmload(cpu_env, tcg_const_i32(s->aflag - 1));
break;
@@ -7768,7 +7772,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
break;
}
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_vmsave(cpu_env, tcg_const_i32(s->aflag - 1));
break;
@@ -7794,7 +7798,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
break;
}
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
gen_helper_clgi(cpu_env);
break;
@@ -7940,7 +7944,7 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
goto illegal_op;
}
gen_update_cc_op(s);
- gen_jmp_im(s, s->base.pc_next - s->cs_base);
+ gen_update_eip_cur(s);
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
gen_io_start();
}
@@ -8853,7 +8857,7 @@ static void i386_tr_tb_stop(DisasContextBase *dcbase,
CPUState *cpu)
DisasContext *dc = container_of(dcbase, DisasContext, base);
if (dc->base.is_jmp == DISAS_TOO_MANY) {
- gen_jmp_im(dc, dc->base.pc_next - dc->cs_base);
+ gen_update_eip_cur(dc);
gen_eob(dc);
}
}
--
2.37.3
- [PULL 00/37] SCSI, i386 patches for 2022-10-11, Paolo Bonzini, 2022/10/11
- [PULL 01/37] scsi-disk: support setting CD-ROM block size via device options, Paolo Bonzini, 2022/10/11
- [PULL 02/37] i386: kvm: extend kvm_{get, put}_vcpu_events to support pending triple fault, Paolo Bonzini, 2022/10/11
- [PULL 03/37] kvm: allow target-specific accelerator properties, Paolo Bonzini, 2022/10/11
- [PULL 04/37] kvm: expose struct KVMState, Paolo Bonzini, 2022/10/11
- [PULL 05/37] i386: add notify VM exit support, Paolo Bonzini, 2022/10/11
- [PULL 10/37] target/i386: Create gen_update_eip_cur,
Paolo Bonzini <=
- [PULL 06/37] target/i386: Remove pc_start, Paolo Bonzini, 2022/10/11
- [PULL 08/37] target/i386: Remove cur_eip argument to gen_exception, Paolo Bonzini, 2022/10/11
- [PULL 11/37] target/i386: Create gen_update_eip_next, Paolo Bonzini, 2022/10/11
- [PULL 09/37] target/i386: Remove cur_eip, next_eip arguments to gen_interrupt, Paolo Bonzini, 2022/10/11
- [PULL 14/37] target/i386: Use DISAS_EOB_NEXT, Paolo Bonzini, 2022/10/11
- [PULL 15/37] target/i386: USe DISAS_EOB_ONLY, Paolo Bonzini, 2022/10/11
- [PULL 12/37] target/i386: Introduce DISAS_EOB*, Paolo Bonzini, 2022/10/11
- [PULL 17/37] target/i386: Remove cur_eip, next_eip arguments to gen_repz*, Paolo Bonzini, 2022/10/11
- [PULL 19/37] target/i386: Truncate values for lcall_real to i32, Paolo Bonzini, 2022/10/11
- [PULL 07/37] target/i386: Return bool from disas_insn, Paolo Bonzini, 2022/10/11