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target/s390x: Use a single return for helper_divs64/u64

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Pack the quotient and remainder into a single Int128.
Use the divu128 primitive to remove the cpu_abort on
32-bit hosts.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
v2: Extended div test case to cover these insns.
This commit is contained in:
Richard Henderson 2022-10-20 09:08:52 +10:00
parent 6d28ff406c
commit 4e5712f903
4 changed files with 56 additions and 35 deletions
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14
target/s390x/tcg/translate.c
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@ -2409,15 +2409,21 @@ static DisasJumpType op_divu32(DisasContext *s, DisasOps *o)
static DisasJumpType op_divs64(DisasContext *s, DisasOps *o)
{
gen_helper_divs64(o->out2, cpu_env, o->in1, o->in2);
return_low128(o->out);
TCGv_i128 t = tcg_temp_new_i128();
gen_helper_divs64(t, cpu_env, o->in1, o->in2);
tcg_gen_extr_i128_i64(o->out2, o->out, t);
tcg_temp_free_i128(t);
return DISAS_NEXT;
}
static DisasJumpType op_divu64(DisasContext *s, DisasOps *o)
{
gen_helper_divu64(o->out2, cpu_env, o->out, o->out2, o->in2);
return_low128(o->out);
TCGv_i128 t = tcg_temp_new_i128();
gen_helper_divu64(t, cpu_env, o->out, o->out2, o->in2);
tcg_gen_extr_i128_i64(o->out2, o->out, t);
tcg_temp_free_i128(t);
return DISAS_NEXT;
}