diff options
| -rw-r--r-- | target-i386/helper.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/target-i386/helper.c b/target-i386/helper.c index 29185ceb97..379cfd5a45 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -2950,9 +2950,14 @@ void helper_fxam_ST0(void) if (SIGND(temp)) env->fpus |= 0x200; /* C1 <-- 1 */ + /* XXX: test fptags too */ expdif = EXPD(temp); if (expdif == MAXEXPD) { +#ifdef USE_X86LDOUBLE + if (MANTD(temp) == 0x8000000000000000ULL) +#else if (MANTD(temp) == 0) +#endif env->fpus |= 0x500 /*Infinity*/; else env->fpus |= 0x100 /*NaN*/; |