diff options
Diffstat (limited to 'sysdeps/powerpc/fpu_control.h')
| -rw-r--r-- | sysdeps/powerpc/fpu_control.h | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/sysdeps/powerpc/fpu_control.h b/sysdeps/powerpc/fpu_control.h index e88d81640d..07ccc849d9 100644 --- a/sysdeps/powerpc/fpu_control.h +++ b/sysdeps/powerpc/fpu_control.h @@ -40,6 +40,8 @@ extern fpu_control_t __fpu_control; # define _FPU_RC_UP 0x02 # define _FPU_RC_ZERO 0x01 +# define _FPU_MASK_RC (_FPU_RC_NEAREST|_FPU_RC_DOWN|_FPU_RC_UP|_FPU_RC_ZERO) + # define _FPU_MASK_NI 0x04 /* non-ieee mode */ /* masking of interrupts */ @@ -63,15 +65,36 @@ extern fpu_control_t __fpu_control; typedef unsigned int fpu_control_t; /* Macros for accessing the hardware control word. */ +# define __FPU_MFFS() \ + ({register double __fr; \ + __asm__ ("mffs %0" : "=f" (__fr)); \ + __fr; \ + }) + # define _FPU_GETCW(cw) \ ({union { double __d; unsigned long long __ll; } __u; \ - register double __fr; \ - __asm__ ("mffs %0" : "=f" (__fr)); \ - __u.__d = __fr; \ + __u.__d = __FPU_MFFS(); \ (cw) = (fpu_control_t) __u.__ll; \ (fpu_control_t) __u.__ll; \ }) +#ifdef _ARCH_PWR9 +# define __FPU_MFFSL() \ + ({register double __fr; \ + __asm__ ("mffsl %0" : "=f" (__fr)); \ + __fr; \ + }) +#else +# define __FPU_MFFSL() __FPU_MFFS() +#endif + +# define _FPU_GET_RC() \ + ({union { double __d; unsigned long long __ll; } __u; \ + __u.__d = __FPU_MFFSL(); \ + __u.__ll &= _FPU_MASK_RC; \ + (fpu_control_t) __u.__ll; \ + }) + # define _FPU_SETCW(cw) \ { union { double __d; unsigned long long __ll; } __u; \ register double __fr; \ |