diff options
Diffstat (limited to 'libm/arm64/fenv.c')
| -rw-r--r-- | libm/arm64/fenv.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/libm/arm64/fenv.c b/libm/arm64/fenv.c index ce560a7..19a2393 100644 --- a/libm/arm64/fenv.c +++ b/libm/arm64/fenv.c @@ -26,6 +26,7 @@ * $FreeBSD: libm/aarch64/fenv.c $ */ +#include <stdint.h> #include <fenv.h> #define FPCR_EXCEPT_SHIFT 8 @@ -38,10 +39,20 @@ const fenv_t __fe_dfl_env = { 0 /* control */, 0 /* status */}; typedef __uint32_t fpu_control_t; // FPCR, Floating-point Control Register. typedef __uint32_t fpu_status_t; // FPSR, Floating-point Status Register. -#define __get_fpcr(__fpcr) __asm__ __volatile__("mrs %0,fpcr" : "=r" (__fpcr)) -#define __get_fpsr(__fpsr) __asm__ __volatile__("mrs %0,fpsr" : "=r" (__fpsr)) -#define __set_fpcr(__fpcr) __asm__ __volatile__("msr fpcr,%0" : :"ri" (__fpcr)) -#define __set_fpsr(__fpsr) __asm__ __volatile__("msr fpsr,%0" : :"ri" (__fpsr)) +#define __get(REGISTER, __value) { \ + uint64_t __value64; \ + __asm__ __volatile__("mrs %0," REGISTER : "=r" (__value64)); \ + __value = (__uint32_t) __value64; \ +} +#define __get_fpcr(__fpcr) __get("fpcr", __fpcr) +#define __get_fpsr(__fpsr) __get("fpsr", __fpsr) + +#define __set(REGISTER, __value) { \ + uint64_t __value64 = __value; \ + __asm__ __volatile__("msr " REGISTER ",%0" : : "ri" (__value64)); \ +} +#define __set_fpcr(__fpcr) __set("fpcr", __fpcr) +#define __set_fpsr(__fpsr) __set("fpsr", __fpsr) int fegetenv(fenv_t* envp) { __get_fpcr(envp->__control); |