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[Qemu-devel] [PATCH 1/4] target/s390x: Save current ilen during translat
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 1/4] target/s390x: Save current ilen during translation |
Date: |
Wed, 24 May 2017 15:08:24 -0700 |
Use this saved value instead of recomputing from next_pc difference.
Signed-off-by: Richard Henderson <address@hidden>
---
target/s390x/translate.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index 4bd16d9..5b8333f 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -58,6 +58,7 @@ struct DisasContext {
const DisasInsn *insn;
DisasFields *fields;
uint64_t pc, next_pc;
+ uint32_t ilen;
enum cc_op cc_op;
bool singlestep_enabled;
};
@@ -349,7 +350,7 @@ static void gen_program_exception(DisasContext *s, int code)
tcg_gen_st_i32(tmp, cpu_env, offsetof(CPUS390XState, int_pgm_code));
tcg_temp_free_i32(tmp);
- tmp = tcg_const_i32(s->next_pc - s->pc);
+ tmp = tcg_const_i32(s->ilen);
tcg_gen_st_i32(tmp, cpu_env, offsetof(CPUS390XState, int_pgm_ilen));
tcg_temp_free_i32(tmp);
@@ -2207,7 +2208,7 @@ static ExitStatus op_ex(DisasContext *s, DisasOps *o)
v1 = regs[r1];
}
- ilen = tcg_const_i32(s->next_pc - s->pc);
+ ilen = tcg_const_i32(s->ilen);
gen_helper_ex(cpu_env, ilen, v1, o->in2);
tcg_temp_free_i32(ilen);
@@ -4052,7 +4053,7 @@ static ExitStatus op_svc(DisasContext *s, DisasOps *o)
tcg_gen_st_i32(t, cpu_env, offsetof(CPUS390XState, int_svc_code));
tcg_temp_free_i32(t);
- t = tcg_const_i32(s->next_pc - s->pc);
+ t = tcg_const_i32(s->ilen);
tcg_gen_st_i32(t, cpu_env, offsetof(CPUS390XState, int_svc_ilen));
tcg_temp_free_i32(t);
@@ -5191,6 +5192,7 @@ static const DisasInsn *extract_insn(CPUS390XState *env,
DisasContext *s,
op = (insn >> 8) & 0xff;
ilen = get_ilen(op);
s->next_pc = s->pc + ilen;
+ s->ilen = ilen;
switch (ilen) {
case 2:
--
2.9.4