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author | Aurelien Jarno <aurelien@aurel32.net> | 2017-06-01 00:01:08 +0200 |
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committer | Richard Henderson <rth@twiddle.net> | 2017-06-06 15:20:38 -0700 |
commit | 9c8be598364d9cfb618e44ee08a30071d9242aca (patch) | |
tree | c22fe360952532f613aec0ab0941ea65098af712 /target/s390x/fpu_helper.c | |
parent | 76c574906ee33139db9b826ac2e2e96fb067c23f (diff) | |
download | qemu-9c8be598364d9cfb618e44ee08a30071d9242aca.zip qemu-9c8be598364d9cfb618e44ee08a30071d9242aca.tar.gz qemu-9c8be598364d9cfb618e44ee08a30071d9242aca.tar.bz2 |
target/s390x: implement COMPARE AND SIGNAL
These functions differ from COMPARE by generating an exception for a
QNaN input. Use the non quiet version of floatXX_compare.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <20170531220129.27724-10-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target/s390x/fpu_helper.c')
-rw-r--r-- | target/s390x/fpu_helper.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/target/s390x/fpu_helper.c b/target/s390x/fpu_helper.c index e604e9f..26f124f 100644 --- a/target/s390x/fpu_helper.c +++ b/target/s390x/fpu_helper.c @@ -585,6 +585,33 @@ uint64_t HELPER(fixb)(CPUS390XState *env, uint64_t ah, uint64_t al, uint32_t m3) return RET128(ret); } +/* 32-bit FP compare and signal */ +uint32_t HELPER(keb)(CPUS390XState *env, uint64_t f1, uint64_t f2) +{ + int cmp = float32_compare(f1, f2, &env->fpu_status); + handle_exceptions(env, GETPC()); + return float_comp_to_cc(env, cmp); +} + +/* 64-bit FP compare and signal */ +uint32_t HELPER(kdb)(CPUS390XState *env, uint64_t f1, uint64_t f2) +{ + int cmp = float64_compare(f1, f2, &env->fpu_status); + handle_exceptions(env, GETPC()); + return float_comp_to_cc(env, cmp); +} + +/* 128-bit FP compare and signal */ +uint32_t HELPER(kxb)(CPUS390XState *env, uint64_t ah, uint64_t al, + uint64_t bh, uint64_t bl) +{ + int cmp = float128_compare(make_float128(ah, al), + make_float128(bh, bl), + &env->fpu_status); + handle_exceptions(env, GETPC()); + return float_comp_to_cc(env, cmp); +} + /* 32-bit FP multiply and add */ uint64_t HELPER(maeb)(CPUS390XState *env, uint64_t f1, uint64_t f2, uint64_t f3) |