diff options
author | Dave Jones <davej@redhat.com> | 2006-04-18 17:19:55 -0500 |
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committer | Dave Jones <davej@redhat.com> | 2006-04-18 17:19:55 -0500 |
commit | f1f76afd71e0f17af9a35fcb649f4bab53304a4d (patch) | |
tree | a56257b13a0eda4a9b7e950c3b85adad16341b80 /arch/powerpc/math-emu/soft-fp.h | |
parent | 530515a06f90c0831732709efee4a99497bd2b7c (diff) | |
parent | 385910f2b275a636238f70844f1b6da9fda6f2da (diff) |
Merge ../linus
Diffstat (limited to 'arch/powerpc/math-emu/soft-fp.h')
-rw-r--r-- | arch/powerpc/math-emu/soft-fp.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/soft-fp.h b/arch/powerpc/math-emu/soft-fp.h new file mode 100644 index 000000000000..cca39598f873 --- /dev/null +++ b/arch/powerpc/math-emu/soft-fp.h @@ -0,0 +1,104 @@ +#ifndef SOFT_FP_H +#define SOFT_FP_H + +#include "sfp-machine.h" + +#define _FP_WORKBITS 3 +#define _FP_WORK_LSB ((_FP_W_TYPE)1 << 3) +#define _FP_WORK_ROUND ((_FP_W_TYPE)1 << 2) +#define _FP_WORK_GUARD ((_FP_W_TYPE)1 << 1) +#define _FP_WORK_STICKY ((_FP_W_TYPE)1 << 0) + +#ifndef FP_RND_NEAREST +# define FP_RND_NEAREST 0 +# define FP_RND_ZERO 1 +# define FP_RND_PINF 2 +# define FP_RND_MINF 3 +#ifndef FP_ROUNDMODE +# define FP_ROUNDMODE FP_RND_NEAREST +#endif +#endif + +#define _FP_ROUND_NEAREST(wc, X) \ +({ int __ret = 0; \ + int __frac = _FP_FRAC_LOW_##wc(X) & 15; \ + if (__frac & 7) { \ + __ret = EFLAG_INEXACT; \ + if ((__frac & 7) != _FP_WORK_ROUND) \ + _FP_FRAC_ADDI_##wc(X, _FP_WORK_ROUND); \ + else if (__frac & _FP_WORK_LSB) \ + _FP_FRAC_ADDI_##wc(X, _FP_WORK_ROUND); \ + } \ + __ret; \ +}) + +#define _FP_ROUND_ZERO(wc, X) \ +({ int __ret = 0; \ + if (_FP_FRAC_LOW_##wc(X) & 7) \ + __ret = EFLAG_INEXACT; \ + __ret; \ +}) + +#define _FP_ROUND_PINF(wc, X) \ +({ int __ret = EFLAG_INEXACT; \ + if (!X##_s && (_FP_FRAC_LOW_##wc(X) & 7)) \ + _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB); \ + else __ret = 0; \ + __ret; \ +}) + +#define _FP_ROUND_MINF(wc, X) \ +({ int __ret = EFLAG_INEXACT; \ + if (X##_s && (_FP_FRAC_LOW_##wc(X) & 7)) \ + _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB); \ + else __ret = 0; \ + __ret; \ +}) + +#define _FP_ROUND(wc, X) \ +({ int __ret = 0; \ + switch (FP_ROUNDMODE) \ + { \ + case FP_RND_NEAREST: \ + __ret |= _FP_ROUND_NEAREST(wc,X); \ + break; \ + case FP_RND_ZERO: \ + __ret |= _FP_ROUND_ZERO(wc,X); \ + break; \ + case FP_RND_PINF: \ + __ret |= _FP_ROUND_PINF(wc,X); \ + break; \ + case FP_RND_MINF: \ + __ret |= _FP_ROUND_MINF(wc,X); \ + break; \ + }; \ + __ret; \ +}) + +#define FP_CLS_NORMAL 0 +#define FP_CLS_ZERO 1 +#define FP_CLS_INF 2 +#define FP_CLS_NAN 3 + +#define _FP_CLS_COMBINE(x,y) (((x) << 2) | (y)) + +#include "op-1.h" +#include "op-2.h" +#include "op-4.h" +#include "op-common.h" + +/* Sigh. Silly things longlong.h needs. */ +#define UWtype _FP_W_TYPE +#define W_TYPE_SIZE _FP_W_TYPE_SIZE + +typedef int SItype __attribute__((mode(SI))); +typedef int DItype __attribute__((mode(DI))); +typedef unsigned int USItype __attribute__((mode(SI))); +typedef unsigned int UDItype __attribute__((mode(DI))); +#if _FP_W_TYPE_SIZE == 32 +typedef unsigned int UHWtype __attribute__((mode(HI))); +#elif _FP_W_TYPE_SIZE == 64 +typedef USItype UHWtype; +#endif + +#endif |