diff options
Diffstat (limited to 'sysdeps/powerpc/fpu/fenv_libc.h')
| -rw-r--r-- | sysdeps/powerpc/fpu/fenv_libc.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sysdeps/powerpc/fpu/fenv_libc.h b/sysdeps/powerpc/fpu/fenv_libc.h index f66bf246cb..55b1697c03 100644 --- a/sysdeps/powerpc/fpu/fenv_libc.h +++ b/sysdeps/powerpc/fpu/fenv_libc.h @@ -34,6 +34,27 @@ extern const fenv_t *__fe_mask_env (void) attribute_hidden; pointer. */ #define fegetenv_register() __builtin_mffs() +/* Equivalent to fegetenv_register, but only returns bits for + status, exception enables, and mode. */ + +#define fegetenv_status_ISA300() \ + ({register double __fr; \ + __asm__ __volatile__ ( \ + ".machine push; .machine \"power9\"; mffsl %0; .machine pop" \ + : "=f" (__fr)); \ + __fr; \ + }) + +#ifdef _ARCH_PWR9 +# define fegetenv_status() fegetenv_status_ISA300() +#else +# define fegetenv_status() \ + (__glibc_likely (__builtin_cpu_supports ("arch_3_00")) \ + ? fegetenv_status_ISA300() \ + : fegetenv_register() \ + ) +#endif + /* Equivalent to fesetenv, but takes a fenv_t instead of a pointer. */ #define fesetenv_register(env) \ do { \ |