mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 20:42:39 +00:00
5cd272085b
Towards the goal of having arch/powerpc not build anything over in arch/ppc move math-emu over. Also, killed some references to arch/ppc/ in the arch/powerpc Makefile which should belong in drivers/ when the particular sub-arch's move over to arch/powerpc. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
#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
|