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author | Richard Henderson <richard.henderson@linaro.org> | 2022-10-20 08:18:59 +1000 |
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committer | Richard Henderson <richard.henderson@linaro.org> | 2023-02-04 06:19:42 -1000 |
commit | 6d28ff406c71c2c6f8a79edb1ccfc17978aa95fb (patch) | |
tree | 3e7aeb10c4768fa5e366fe8822c374b29e4ec77c /target | |
parent | 82f6584c9b1345489a6446b3bc4086e00e8d67d1 (diff) | |
download | qemu-6d28ff406c71c2c6f8a79edb1ccfc17978aa95fb.zip qemu-6d28ff406c71c2c6f8a79edb1ccfc17978aa95fb.tar.gz qemu-6d28ff406c71c2c6f8a79edb1ccfc17978aa95fb.tar.bz2 |
target/s390x: Use a single return for helper_divs32/u32
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.
Diffstat (limited to 'target')
-rw-r--r-- | target/s390x/helper.h | 2 | ||||
-rw-r--r-- | target/s390x/tcg/int_helper.c | 26 | ||||
-rw-r--r-- | target/s390x/tcg/translate.c | 8 |
3 files changed, 18 insertions, 18 deletions
diff --git a/target/s390x/helper.h b/target/s390x/helper.h index 93923ca..bc828d9 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -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) diff --git a/target/s390x/tcg/int_helper.c b/target/s390x/tcg/int_helper.c index 9545423..7260583 100644 --- a/target/s390x/tcg/int_helper.c +++ b/target/s390x/tcg/int_helper.c @@ -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 */ diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c index a339b27..169f7ee 100644 --- a/target/s390x/tcg/translate.c +++ b/target/s390x/tcg/translate.c @@ -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; } |