121 lines
4.0 KiB
C
121 lines
4.0 KiB
C
|
/*
|
||
|
|
* 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\t" \
|
||
|
|
"add %2,%3,%0\n\t" \
|
||
|
|
"bcs,a,pn %%xcc, 1f\n\t" \
|
||
|
|
"add %0, 1, %0\n" \
|
||
|
|
"1:" \
|
||
|
|
: "=r" (sh), \
|
||
|
|
"=&r" (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\t" \
|
||
|
|
"sub %2,%3,%0\n\t" \
|
||
|
|
"bcs,a,pn %%xcc, 1f\n\t" \
|
||
|
|
"sub %0, 1, %0\n" \
|
||
|
|
"1:" \
|
||
|
|
: "=r" (sh), \
|
||
|
|
"=&r" (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\t" \
|
||
|
|
"mulx %3,%6,%1\n\t" \
|
||
|
|
"srlx %6,32,%2\n\t" \
|
||
|
|
"mulx %2,%3,%4\n\t" \
|
||
|
|
"sllx %4,32,%5\n\t" \
|
||
|
|
"srl %6,0,%3\n\t" \
|
||
|
|
"sub %1,%5,%5\n\t" \
|
||
|
|
"srlx %5,32,%5\n\t" \
|
||
|
|
"addcc %4,%5,%4\n\t" \
|
||
|
|
"srlx %7,32,%5\n\t" \
|
||
|
|
"mulx %3,%5,%3\n\t" \
|
||
|
|
"mulx %2,%5,%5\n\t" \
|
||
|
|
"sethi %%hi(0x80000000),%2\n\t" \
|
||
|
|
"addcc %4,%3,%4\n\t" \
|
||
|
|
"srlx %4,32,%4\n\t" \
|
||
|
|
"add %2,%2,%2\n\t" \
|
||
|
|
"movcc %%xcc,%%g0,%2\n\t" \
|
||
|
|
"addcc %5,%4,%5\n\t" \
|
||
|
|
"sllx %3,32,%3\n\t" \
|
||
|
|
"add %1,%3,%1\n\t" \
|
||
|
|
"add %5,%2,%0" \
|
||
|
|
: "=r" (wh), \
|
||
|
|
"=&r" (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
|