diff options
Diffstat (limited to 'libgcc/config/aarch64/sfp-machine.h')
| -rw-r--r-- | libgcc/config/aarch64/sfp-machine.h | 68 |
1 files changed, 16 insertions, 52 deletions
diff --git a/libgcc/config/aarch64/sfp-machine.h b/libgcc/config/aarch64/sfp-machine.h index 3a09ae7605f..52b6fb2c446 100644 --- a/libgcc/config/aarch64/sfp-machine.h +++ b/libgcc/config/aarch64/sfp-machine.h @@ -69,62 +69,26 @@ typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__))); #define FP_EX_OVERFLOW 0x04 #define FP_EX_UNDERFLOW 0x08 #define FP_EX_INEXACT 0x10 +#define FP_EX_SHIFT 8 +#define FP_EX_ALL \ + (FP_EX_INVALID | FP_EX_DIVZERO | FP_EX_OVERFLOW | FP_EX_UNDERFLOW \ + | FP_EX_INEXACT) -#define FP_HANDLE_EXCEPTIONS \ - do { \ - const float fp_max = __FLT_MAX__; \ - const float fp_min = __FLT_MIN__; \ - const float fp_1e32 = 1.0e32f; \ - const float fp_zero = 0.0; \ - const float fp_one = 1.0; \ - unsigned fpsr; \ - if (_fex & FP_EX_INVALID) \ - { \ - __asm__ __volatile__ ("fdiv\ts0, %s0, %s0" \ - : \ - : "w" (fp_zero) \ - : "s0"); \ - __asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr)); \ - } \ - if (_fex & FP_EX_DIVZERO) \ - { \ - __asm__ __volatile__ ("fdiv\ts0, %s0, %s1" \ - : \ - : "w" (fp_one), "w" (fp_zero) \ - : "s0"); \ - __asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr)); \ - } \ - if (_fex & FP_EX_OVERFLOW) \ - { \ - __asm__ __volatile__ ("fadd\ts0, %s0, %s1" \ - : \ - : "w" (fp_max), "w" (fp_1e32) \ - : "s0"); \ - __asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr)); \ - } \ - if (_fex & FP_EX_UNDERFLOW) \ - { \ - __asm__ __volatile__ ("fmul\ts0, %s0, %s0" \ - : \ - : "w" (fp_min) \ - : "s0"); \ - __asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr)); \ - } \ - if (_fex & FP_EX_INEXACT) \ - { \ - __asm__ __volatile__ ("fsub\ts0, %s0, %s1" \ - : \ - : "w" (fp_max), "w" (fp_one) \ - : "s0"); \ - __asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr)); \ - } \ - } while (0) +void __sfp_handle_exceptions (int); +#define FP_HANDLE_EXCEPTIONS \ + do { \ + if (__builtin_expect (_fex, 0)) \ + __sfp_handle_exceptions (_fex); \ + } while (0); -#define FP_RND_NEAREST 0 -#define FP_RND_ZERO 0xc00000 +#define FP_TRAPPING_EXCEPTIONS ((_fpcr >> FP_EX_SHIFT) & FP_EX_ALL) + +#define FP_RND_NEAREST 0x000000 #define FP_RND_PINF 0x400000 #define FP_RND_MINF 0x800000 +#define FP_RND_ZERO 0xc00000 +#define FP_RND_MASK 0xc00000 #define _FP_DECL_EX \ unsigned long int _fpcr __attribute__ ((unused)) = FP_RND_NEAREST @@ -135,7 +99,7 @@ typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__))); : "=r" (_fpcr)); \ } while (0) -#define FP_ROUNDMODE (_fpcr & 0xc00000) +#define FP_ROUNDMODE (_fpcr & FP_RND_MASK) #define __LITTLE_ENDIAN 1234 #define __BIG_ENDIAN 4321 |