diff options
Diffstat (limited to 'gcc-4.9/libgcc/config/i386/sfp-machine.h')
-rw-r--r-- | gcc-4.9/libgcc/config/i386/sfp-machine.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/i386/sfp-machine.h b/gcc-4.9/libgcc/config/i386/sfp-machine.h new file mode 100644 index 000000000..148044a69 --- /dev/null +++ b/gcc-4.9/libgcc/config/i386/sfp-machine.h @@ -0,0 +1,85 @@ +#ifdef __MINGW32__ + /* Make sure we are using gnu-style bitfield handling. */ +#define _FP_STRUCT_LAYOUT __attribute__ ((gcc_struct)) +#endif + +/* The type of the result of a floating point comparison. This must + match `__libgcc_cmp_return__' in GCC for the target. */ +typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__))); +#define CMPtype __gcc_CMPtype + +#ifdef __x86_64__ +#include "config/i386/64/sfp-machine.h" +#else +#include "config/i386/32/sfp-machine.h" +#endif + +#define _FP_KEEPNANFRACP 1 +#define _FP_QNANNEGATEDP 0 + +#define _FP_NANSIGN_S 1 +#define _FP_NANSIGN_D 1 +#define _FP_NANSIGN_E 1 +#define _FP_NANSIGN_Q 1 + +/* Here is something Intel misdesigned: the specs don't define + the case where we have two NaNs with same mantissas, but + different sign. Different operations pick up different NaNs. */ +#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ + do { \ + if (_FP_FRAC_GT_##wc(X, Y) \ + || (_FP_FRAC_EQ_##wc(X,Y) && (OP == '+' || OP == '*'))) \ + { \ + R##_s = X##_s; \ + _FP_FRAC_COPY_##wc(R,X); \ + } \ + else \ + { \ + R##_s = Y##_s; \ + _FP_FRAC_COPY_##wc(R,Y); \ + } \ + R##_c = FP_CLS_NAN; \ + } while (0) + +#ifndef _SOFT_FLOAT +#define FP_EX_INVALID 0x01 +#define FP_EX_DENORM 0x02 +#define FP_EX_DIVZERO 0x04 +#define FP_EX_OVERFLOW 0x08 +#define FP_EX_UNDERFLOW 0x10 +#define FP_EX_INEXACT 0x20 +#define FP_EX_ALL \ + (FP_EX_INVALID | FP_EX_DENORM | FP_EX_DIVZERO | FP_EX_OVERFLOW \ + | FP_EX_UNDERFLOW | FP_EX_INEXACT) + +void __sfp_handle_exceptions (int); + +#define FP_HANDLE_EXCEPTIONS \ + do { \ + if (__builtin_expect (_fex, 0)) \ + __sfp_handle_exceptions (_fex); \ + } while (0); + +#define FP_TRAPPING_EXCEPTIONS ((_fcw >> FP_EX_SHIFT) & FP_EX_ALL) + +#define FP_ROUNDMODE (_fcw & FP_RND_MASK) +#endif + +#define _FP_TININESS_AFTER_ROUNDING 1 + +#define __LITTLE_ENDIAN 1234 +#define __BIG_ENDIAN 4321 + +#define __BYTE_ORDER __LITTLE_ENDIAN + +/* Define ALIASNAME as a strong alias for NAME. */ +#if defined __MACH__ +/* Mach-O doesn't support aliasing. If these functions ever return + anything but CMPtype we need to revisit this... */ +#define strong_alias(name, aliasname) \ + CMPtype aliasname (TFtype a, TFtype b) { return name(a, b); } +#else +# define strong_alias(name, aliasname) _strong_alias(name, aliasname) +# define _strong_alias(name, aliasname) \ + extern __typeof (name) aliasname __attribute__ ((alias (#name))); +#endif |