diff options
Diffstat (limited to 'lib/libc/alpha/gen/fpsetround.c')
| -rw-r--r-- | lib/libc/alpha/gen/fpsetround.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/lib/libc/alpha/gen/fpsetround.c b/lib/libc/alpha/gen/fpsetround.c index 0d8f40af6d651..c28093cad87c1 100644 --- a/lib/libc/alpha/gen/fpsetround.c +++ b/lib/libc/alpha/gen/fpsetround.c @@ -33,7 +33,6 @@ #include <sys/types.h> #include <ieeefp.h> -#include <machine/fpu.h> fp_rnd fpsetround(rnd_dir) @@ -42,14 +41,18 @@ fpsetround(rnd_dir) double fpcrval; u_int64_t old, new; - GET_FPCR(fpcrval); + __asm__("trapb"); + __asm__("mf_fpcr %0" : "=f" (fpcrval)); + __asm__("trapb"); old = *(u_int64_t *)&fpcrval; - new = old & (~FPCR_DYN_MASK); - new |= ((long) rnd_dir << FPCR_DYN_SHIFT) & FPCR_DYN_MASK; - + new = old & ~(long)0x0c00000000000000; + new = (long)rnd_dir << 58; *(u_int64_t *)&fpcrval = new; - SET_FPCR(fpcrval); - return ((old & FPCR_DYN_MASK) >> FPCR_DYN_SHIFT); + __asm__("trapb"); + __asm__("mt_fpcr %0" : : "f" (fpcrval)); + __asm__("trapb"); + + return ((old >> 58) & 0x3); } |