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target/s390x: Use unwind data for helper_clc 

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2017-05-19 10:06:23 -07:00
parent d3696812e3
commit e79f56f4d6
2 changed files with 17 additions and 13 deletions
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29
target/s390x/mem_helper.c
View File

@ -233,32 +233,37 @@ void HELPER(mvc)(CPUS390XState *env, uint32_t l, uint64_t dest, uint64_t src)
}
/* compare unsigned byte arrays */
uint32_t HELPER(clc)(CPUS390XState *env, uint32_t l, uint64_t s1, uint64_t s2)
static uint32_t do_helper_clc(CPUS390XState *env, uint32_t l, uint64_t s1,
uint64_t s2, uintptr_t ra)
{
int i;
unsigned char x, y;
uint32_t cc;
uint32_t i;
uint32_t cc = 0;
HELPER_LOG("%s l %d s1 %" PRIx64 " s2 %" PRIx64 "\n",
__func__, l, s1, s2);
for (i = 0; i <= l; i++) {
x = cpu_ldub_data(env, s1 + i);
y = cpu_ldub_data(env, s2 + i);
uint8_t x = cpu_ldub_data_ra(env, s1 + i, ra);
uint8_t y = cpu_ldub_data_ra(env, s2 + i, ra);
HELPER_LOG("%02x (%c)/%02x (%c) ", x, x, y, y);
if (x < y) {
cc = 1;
goto done;
break;
} else if (x > y) {
cc = 2;
goto done;
break;
}
}
cc = 0;
done:
HELPER_LOG("\n");
return cc;
}
uint32_t HELPER(clc)(CPUS390XState *env, uint32_t l, uint64_t s1, uint64_t s2)
{
return do_helper_clc(env, l, s1, s2, GETPC());
}
/* compare logical under mask */
uint32_t HELPER(clm)(CPUS390XState *env, uint32_t r1, uint32_t mask,
uint64_t addr)
@ -1237,8 +1242,8 @@ uint32_t HELPER(ex)(CPUS390XState *env, uint32_t cc, uint64_t v1,
get_address(env, 0, b2, d2), 0);
break;
case 0x500:
cc = helper_clc(env, l, get_address(env, 0, b1, d1),
get_address(env, 0, b2, d2));
cc = do_helper_clc(env, l, get_address(env, 0, b1, d1),
get_address(env, 0, b2, d2), 0);
break;
case 0x600:
cc = do_helper_oc(env, l, get_address(env, 0, b1, d1),

1
target/s390x/translate.c
View File

@ -1906,7 +1906,6 @@ static ExitStatus op_clc(DisasContext *s, DisasOps *o)
tcg_gen_qemu_ld64(cc_dst, o->in2, get_mem_index(s));
break;
default:
potential_page_fault(s);
vl = tcg_const_i32(l);
gen_helper_clc(cc_op, cpu_env, vl, o->addr1, o->in2);
tcg_temp_free_i32(vl);