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author | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2023-01-14 23:29:58 +0000 |
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committer | Laurent Vivier <laurent@vivier.eu> | 2023-01-16 09:47:31 +0100 |
commit | ad6dae3b3369433ab43a1b190bb3a8aacabb1bbf (patch) | |
tree | c8d1c2c400ba7d5d429109832519bc38a831acee /target/m68k | |
parent | 60b598df6e3e3d76dae6967e03d4418f6aac6064 (diff) | |
download | qemu-ad6dae3b3369433ab43a1b190bb3a8aacabb1bbf.zip qemu-ad6dae3b3369433ab43a1b190bb3a8aacabb1bbf.tar.gz qemu-ad6dae3b3369433ab43a1b190bb3a8aacabb1bbf.tar.bz2 |
target/m68k: fix FPSR quotient byte for fmod instruction
The FPSR quotient byte should be set to the value of the quotient and not the
result. Switch from using floatx80_mod() to floatx80_modrem() which returns
the quotient as a uint64_t which can be used for the quotient byte.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230114232959.118224-4-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'target/m68k')
-rw-r--r-- | target/m68k/fpu_helper.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 76b34b8..5fd094a 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -523,17 +523,16 @@ static void make_quotient(CPUM68KState *env, int sign, uint32_t quotient) void HELPER(fmod)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1) { - uint32_t quotient; - int sign; + uint64_t quotient; + int sign = extractFloatx80Sign(val1->d) ^ extractFloatx80Sign(val0->d); - res->d = floatx80_mod(val1->d, val0->d, &env->fp_status); + res->d = floatx80_modrem(val1->d, val0->d, true, "ient, + &env->fp_status); if (floatx80_is_any_nan(res->d)) { return; } - sign = extractFloatx80Sign(res->d); - quotient = floatx80_to_int32(floatx80_abs(res->d), &env->fp_status); make_quotient(env, sign, quotient); } |