Viewing file:  sfp-util.h (4.7 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* $Id: sfp-util.h,v 1.5 2001/06/10 06:48:46 davem Exp $
* arch/sparc64/math-emu/sfp-util.h
*
* Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz)
* Copyright (C) 1999 David S. Miller (davem@redhat.com)
*
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <asm/byteorder.h>
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("addcc %4,%5,%1\n\
add %2,%3,%0\n\
bcs,a,pn %%xcc, 1f\n\
add %0, 1, %0\n\
1:" \
: "=r" ((UDItype)(sh)), \
"=&r" ((UDItype)(sl)) \
: "r" ((UDItype)(ah)), \
"r" ((UDItype)(bh)), \
"r" ((UDItype)(al)), \
"r" ((UDItype)(bl)) \
: "cc")
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("subcc %4,%5,%1\n\
sub %2,%3,%0\n\
bcs,a,pn %%xcc, 1f\n\
sub %0, 1, %0\n\
1:" \
: "=r" ((UDItype)(sh)), \
"=&r" ((UDItype)(sl)) \
: "r" ((UDItype)(ah)), \
"r" ((UDItype)(bh)), \
"r" ((UDItype)(al)), \
"r" ((UDItype)(bl)) \
: "cc")
#define umul_ppmm(wh, wl, u, v) \
do { \
UDItype tmp1, tmp2, tmp3, tmp4; \
__asm__ __volatile__ ( \
"srl %7,0,%3\n\
mulx %3,%6,%1\n\
srlx %6,32,%2\n\
mulx %2,%3,%4\n\
sllx %4,32,%5\n\
srl %6,0,%3\n\
sub %1,%5,%5\n\
srlx %5,32,%5\n\
addcc %4,%5,%4\n\
srlx %7,32,%5\n\
mulx %3,%5,%3\n\
mulx %2,%5,%5\n\
sethi %%hi(0x80000000),%2\n\
addcc %4,%3,%4\n\
srlx %4,32,%4\n\
add %2,%2,%2\n\
movcc %%xcc,%%g0,%2\n\
addcc %5,%4,%5\n\
sllx %3,32,%3\n\
add %1,%3,%1\n\
add %5,%2,%0" \
: "=r" ((UDItype)(wh)), \
"=&r" ((UDItype)(wl)), \
"=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4) \
: "r" ((UDItype)(u)), \
"r" ((UDItype)(v)) \
: "cc"); \
} while (0)
#define udiv_qrnnd(q, r, n1, n0, d) \
do { \
UWtype __d1, __d0, __q1, __q0, __r1, __r0, __m; \
__d1 = (d >> 32); \
__d0 = (USItype)d; \
\
__r1 = (n1) % __d1; \
__q1 = (n1) / __d1; \
__m = (UWtype) __q1 * __d0; \
__r1 = (__r1 << 32) | (n0 >> 32); \
if (__r1 < __m) \
{ \
__q1--, __r1 += (d); \
if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */ \
if (__r1 < __m) \
__q1--, __r1 += (d); \
} \
__r1 -= __m; \
\
__r0 = __r1 % __d1; \
__q0 = __r1 / __d1; \
__m = (UWtype) __q0 * __d0; \
__r0 = (__r0 << 32) | ((USItype)n0); \
if (__r0 < __m) \
{ \
__q0--, __r0 += (d); \
if (__r0 >= (d)) \
if (__r0 < __m) \
__q0--, __r0 += (d); \
} \
__r0 -= __m; \
\
(q) = (UWtype) (__q1 << 32) | __q0; \
(r) = __r0; \
} while (0)
#define UDIV_NEEDS_NORMALIZATION 1
#define abort() \
return 0
#ifdef __BIG_ENDIAN
#define __BYTE_ORDER __BIG_ENDIAN
#else
#define __BYTE_ORDER __LITTLE_ENDIAN
#endif
|