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target/s390x: Use unwind data for helper_cksm 

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
master
Richard Henderson 2017-05-19 11:34:43 -07:00
parent 4546137957
commit 498644e99f
2 changed files with 6 additions and 6 deletions
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11
target/s390x/mem_helper.c
View File

@ -633,6 +633,7 @@ uint32_t HELPER(clcle)(CPUS390XState *env, uint32_t r1, uint64_t a2,
uint64_t HELPER(cksm)(CPUS390XState *env, uint64_t r1,
uint64_t src, uint64_t src_len)
{
uintptr_t ra = GETPC();
uint64_t max_len, len;
uint64_t cksm = (uint32_t)r1;
@ -642,21 +643,21 @@ uint64_t HELPER(cksm)(CPUS390XState *env, uint64_t r1,
/* Process full words as available. */
for (len = 0; len + 4 <= max_len; len += 4, src += 4) {
cksm += (uint32_t)cpu_ldl_data(env, src);
cksm += (uint32_t)cpu_ldl_data_ra(env, src, ra);
}
switch (max_len - len) {
case 1:
cksm += cpu_ldub_data(env, src) << 24;
cksm += cpu_ldub_data_ra(env, src, ra) << 24;
len += 1;
break;
case 2:
cksm += cpu_lduw_data(env, src) << 16;
cksm += cpu_lduw_data_ra(env, src, ra) << 16;
len += 2;
break;
case 3:
cksm += cpu_lduw_data(env, src) << 16;
cksm += cpu_ldub_data(env, src + 2) << 8;
cksm += cpu_lduw_data_ra(env, src, ra) << 16;
cksm += cpu_ldub_data_ra(env, src + 2, ra) << 8;
len += 3;
break;
}

1
target/s390x/translate.c
View File

@ -1871,7 +1871,6 @@ static ExitStatus op_cksm(DisasContext *s, DisasOps *o)
int r2 = get_field(s->fields, r2);
TCGv_i64 len = tcg_temp_new_i64();
potential_page_fault(s);
gen_helper_cksm(len, cpu_env, o->in1, o->in2, regs[r2 + 1]);
set_cc_static(s);
return_low128(o->out);