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target/s390x: Use Int128 for return from CKSM

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Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-10-21 11:51:10 +10:00
parent b71dd2a51e
commit c91192245a
3 changed files with 8 additions and 7 deletions
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2
target/s390x/helper.h
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@ -103,7 +103,7 @@ DEF_HELPER_4(tre, i64, env, i64, i64, i64)
DEF_HELPER_4(trt, i32, env, i32, i64, i64)
DEF_HELPER_4(trtr, i32, env, i32, i64, i64)
DEF_HELPER_5(trXX, i32, env, i32, i32, i32, i32)
DEF_HELPER_4(cksm, i64, env, i64, i64, i64)
DEF_HELPER_4(cksm, i128, env, i64, i64, i64)
DEF_HELPER_FLAGS_5(calc_cc, TCG_CALL_NO_RWG_SE, i32, env, i32, i64, i64, i64)
DEF_HELPER_FLAGS_2(sfpc, TCG_CALL_NO_WG, void, env, i64)
DEF_HELPER_FLAGS_2(sfas, TCG_CALL_NO_WG, void, env, i64)

5
target/s390x/tcg/mem_helper.c
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@ -1350,7 +1350,7 @@ uint32_t HELPER(clclu)(CPUS390XState *env, uint32_t r1, uint64_t a2,
}
/* checksum */
uint64_t HELPER(cksm)(CPUS390XState *env, uint64_t r1,
Int128 HELPER(cksm)(CPUS390XState *env, uint64_t r1,
uint64_t src, uint64_t src_len)
{
uintptr_t ra = GETPC();
@ -1392,8 +1392,7 @@ uint64_t HELPER(cksm)(CPUS390XState *env, uint64_t r1,
env->cc_op = (len == src_len ? 0 : 3);
/* Return both cksm and processed length. */
env->retxl = cksm;
return len;
return int128_make128(cksm, len);
}
void HELPER(pack)(CPUS390XState *env, uint32_t len, uint64_t dest, uint64_t src)

6
target/s390x/tcg/translate.c
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@ -2041,11 +2041,13 @@ static DisasJumpType op_cxlgb(DisasContext *s, DisasOps *o)
static DisasJumpType op_cksm(DisasContext *s, DisasOps *o)
{
int r2 = get_field(s, r2);
TCGv_i128 pair = tcg_temp_new_i128();
TCGv_i64 len = tcg_temp_new_i64();
gen_helper_cksm(len, cpu_env, o->in1, o->in2, regs[r2 + 1]);
gen_helper_cksm(pair, cpu_env, o->in1, o->in2, regs[r2 + 1]);
set_cc_static(s);
return_low128(o->out);
tcg_gen_extr_i128_i64(o->out, len, pair);
tcg_temp_free_i128(pair);
tcg_gen_add_i64(regs[r2], regs[r2], len);
tcg_gen_sub_i64(regs[r2 + 1], regs[r2 + 1], len);