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target/s390x: Save current ilen during translation 

Use this saved value instead of recomputing from next_pc difference.

Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2017-05-24 12:27:36 -07:00
parent b26de9518d
commit 99e57856f6
1 changed files with 5 additions and 3 deletions
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8
target/s390x/translate.c
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@ -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);
@ -2212,7 +2213,7 @@ 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);
@ -4057,7 +4058,7 @@ 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);
@ -5196,6 +5197,7 @@ 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: