diff options
Diffstat (limited to 'lib/msun/powerpc/fenv.c')
| -rw-r--r-- | lib/msun/powerpc/fenv.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/msun/powerpc/fenv.c b/lib/msun/powerpc/fenv.c index b7e611ed99a0..7f7d98515995 100644 --- a/lib/msun/powerpc/fenv.c +++ b/lib/msun/powerpc/fenv.c @@ -30,6 +30,10 @@ #define __fenv_static #include "fenv.h" +#ifdef __SPE__ +#include <sys/types.h> +#include <machine/spr.h> +#endif #ifdef __GNUC_GNU_INLINE__ #error "This file must be compiled with C99 'inline' semantics" @@ -40,7 +44,9 @@ const fenv_t __fe_dfl_env = 0x00000000; extern inline int feclearexcept(int __excepts); extern inline int fegetexceptflag(fexcept_t *__flagp, int __excepts); extern inline int fesetexceptflag(const fexcept_t *__flagp, int __excepts); +#ifndef __SPE__ extern inline int feraiseexcept(int __excepts); +#endif extern inline int fetestexcept(int __excepts); extern inline int fegetround(void); extern inline int fesetround(int __round); @@ -48,3 +54,27 @@ extern inline int fegetenv(fenv_t *__envp); extern inline int feholdexcept(fenv_t *__envp); extern inline int fesetenv(const fenv_t *__envp); extern inline int feupdateenv(const fenv_t *__envp); + +#ifdef __SPE__ +#define PMAX 0x7f7fffff +#define PMIN 0x00800000 +int feraiseexcept(int __excepts) +{ + uint32_t spefscr; + + spefscr = mfspr(SPR_SPEFSCR); + mtspr(SPR_SPEFSCR, spefscr | (__excepts & FE_ALL_EXCEPT)); + + if (__excepts & FE_INVALID) + __asm __volatile ("efsdiv %0, %0, %1" :: "r"(0), "r"(0)); + if (__excepts & FE_DIVBYZERO) + __asm __volatile ("efsdiv %0, %0, %1" :: "r"(1.0f), "r"(0)); + if (__excepts & FE_UNDERFLOW) + __asm __volatile ("efsmul %0, %0, %0" :: "r"(PMIN)); + if (__excepts & FE_OVERFLOW) + __asm __volatile ("efsadd %0, %0, %0" :: "r"(PMAX)); + if (__excepts & FE_INEXACT) + __asm __volatile ("efssub %0, %0, %1" :: "r"(PMIN), "r"(1.0f)); + return (0); +} +#endif |