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target/s390x: Use a single return for helper_divs32/u32

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Pack the quotient and remainder into a single uint64_t.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
v2: Fix operand ordering; use tcg_extr32_i64.
This commit is contained in:
Richard Henderson 2022-10-20 08:18:59 +10:00
parent 82f6584c9b
commit 6d28ff406c
3 changed files with 18 additions and 18 deletions
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2
target/s390x/helper.h
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@ -10,7 +10,7 @@ DEF_HELPER_FLAGS_4(clc, TCG_CALL_NO_WG, i32, env, i32, i64, i64)
DEF_HELPER_3(mvcl, i32, env, i32, i32)
DEF_HELPER_3(clcl, i32, env, i32, i32)
DEF_HELPER_FLAGS_4(clm, TCG_CALL_NO_WG, i32, env, i32, i32, i64)
DEF_HELPER_FLAGS_3(divs32, TCG_CALL_NO_WG, s64, env, s64, s64)
DEF_HELPER_FLAGS_3(divs32, TCG_CALL_NO_WG, i64, env, s64, s64)
DEF_HELPER_FLAGS_3(divu32, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(divs64, TCG_CALL_NO_WG, s64, env, s64, s64)
DEF_HELPER_FLAGS_4(divu64, TCG_CALL_NO_WG, i64, env, i64, i64, i64)

26
target/s390x/tcg/int_helper.c
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@ -34,45 +34,45 @@
#endif
/* 64/32 -> 32 signed division */
int64_t HELPER(divs32)(CPUS390XState *env, int64_t a, int64_t b64)
uint64_t HELPER(divs32)(CPUS390XState *env, int64_t a, int64_t b64)
{
int32_t ret, b = b64;
int64_t q;
int32_t b = b64;
int64_t q, r;
if (b == 0) {
tcg_s390_program_interrupt(env, PGM_FIXPT_DIVIDE, GETPC());
}
ret = q = a / b;
env->retxl = a % b;
q = a / b;
r = a % b;
/* Catch non-representable quotient. */
if (ret != q) {
if (q != (int32_t)q) {
tcg_s390_program_interrupt(env, PGM_FIXPT_DIVIDE, GETPC());
}
return ret;
return deposit64(q, 32, 32, r);
}
/* 64/32 -> 32 unsigned division */
uint64_t HELPER(divu32)(CPUS390XState *env, uint64_t a, uint64_t b64)
{
uint32_t ret, b = b64;
uint64_t q;
uint32_t b = b64;
uint64_t q, r;
if (b == 0) {
tcg_s390_program_interrupt(env, PGM_FIXPT_DIVIDE, GETPC());
}
ret = q = a / b;
env->retxl = a % b;
q = a / b;
r = a % b;
/* Catch non-representable quotient. */
if (ret != q) {
if (q != (uint32_t)q) {
tcg_s390_program_interrupt(env, PGM_FIXPT_DIVIDE, GETPC());
}
return ret;
return deposit64(q, 32, 32, r);
}
/* 64/64 -> 64 signed division */

8
target/s390x/tcg/translate.c
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@ -2395,15 +2395,15 @@ static DisasJumpType op_diag(DisasContext *s, DisasOps *o)
static DisasJumpType op_divs32(DisasContext *s, DisasOps *o)
{
gen_helper_divs32(o->out2, cpu_env, o->in1, o->in2);
return_low128(o->out);
gen_helper_divs32(o->out, cpu_env, o->in1, o->in2);
tcg_gen_extr32_i64(o->out2, o->out, o->out);
return DISAS_NEXT;
}
static DisasJumpType op_divu32(DisasContext *s, DisasOps *o)
{
gen_helper_divu32(o->out2, cpu_env, o->in1, o->in2);
return_low128(o->out);
gen_helper_divu32(o->out, cpu_env, o->in1, o->in2);
tcg_gen_extr32_i64(o->out2, o->out, o->out);
return DISAS_NEXT;
}