1/* 2 * arch/sparc64/math-emu/sfp-util.h 3 * 4 * Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz) 5 * Copyright (C) 1999 David S. Miller (davem@redhat.com) 6 * 7 */ 8 9#include <linux/kernel.h> 10#include <linux/sched.h> 11#include <linux/types.h> 12#include <asm/byteorder.h> 13 14#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ 15 __asm__ ("addcc %4,%5,%1\n\t" \ 16 "add %2,%3,%0\n\t" \ 17 "bcs,a,pn %%xcc, 1f\n\t" \ 18 "add %0, 1, %0\n" \ 19 "1:" \ 20 : "=r" ((UDItype)(sh)), \ 21 "=&r" ((UDItype)(sl)) \ 22 : "r" ((UDItype)(ah)), \ 23 "r" ((UDItype)(bh)), \ 24 "r" ((UDItype)(al)), \ 25 "r" ((UDItype)(bl)) \ 26 : "cc") 27 28#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ 29 __asm__ ("subcc %4,%5,%1\n\t" \ 30 "sub %2,%3,%0\n\t" \ 31 "bcs,a,pn %%xcc, 1f\n\t" \ 32 "sub %0, 1, %0\n" \ 33 "1:" \ 34 : "=r" ((UDItype)(sh)), \ 35 "=&r" ((UDItype)(sl)) \ 36 : "r" ((UDItype)(ah)), \ 37 "r" ((UDItype)(bh)), \ 38 "r" ((UDItype)(al)), \ 39 "r" ((UDItype)(bl)) \ 40 : "cc") 41 42#define umul_ppmm(wh, wl, u, v) \ 43 do { \ 44 UDItype tmp1, tmp2, tmp3, tmp4; \ 45 __asm__ __volatile__ ( \ 46 "srl %7,0,%3\n\t" \ 47 "mulx %3,%6,%1\n\t" \ 48 "srlx %6,32,%2\n\t" \ 49 "mulx %2,%3,%4\n\t" \ 50 "sllx %4,32,%5\n\t" \ 51 "srl %6,0,%3\n\t" \ 52 "sub %1,%5,%5\n\t" \ 53 "srlx %5,32,%5\n\t" \ 54 "addcc %4,%5,%4\n\t" \ 55 "srlx %7,32,%5\n\t" \ 56 "mulx %3,%5,%3\n\t" \ 57 "mulx %2,%5,%5\n\t" \ 58 "sethi %%hi(0x80000000),%2\n\t" \ 59 "addcc %4,%3,%4\n\t" \ 60 "srlx %4,32,%4\n\t" \ 61 "add %2,%2,%2\n\t" \ 62 "movcc %%xcc,%%g0,%2\n\t" \ 63 "addcc %5,%4,%5\n\t" \ 64 "sllx %3,32,%3\n\t" \ 65 "add %1,%3,%1\n\t" \ 66 "add %5,%2,%0" \ 67 : "=r" ((UDItype)(wh)), \ 68 "=&r" ((UDItype)(wl)), \ 69 "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4) \ 70 : "r" ((UDItype)(u)), \ 71 "r" ((UDItype)(v)) \ 72 : "cc"); \ 73 } while (0) 74 75#define udiv_qrnnd(q, r, n1, n0, d) \ 76 do { \ 77 UWtype __d1, __d0, __q1, __q0, __r1, __r0, __m; \ 78 __d1 = (d >> 32); \ 79 __d0 = (USItype)d; \ 80 \ 81 __r1 = (n1) % __d1; \ 82 __q1 = (n1) / __d1; \ 83 __m = (UWtype) __q1 * __d0; \ 84 __r1 = (__r1 << 32) | (n0 >> 32); \ 85 if (__r1 < __m) \ 86 { \ 87 __q1--, __r1 += (d); \ 88 if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */ \ 89 if (__r1 < __m) \ 90 __q1--, __r1 += (d); \ 91 } \ 92 __r1 -= __m; \ 93 \ 94 __r0 = __r1 % __d1; \ 95 __q0 = __r1 / __d1; \ 96 __m = (UWtype) __q0 * __d0; \ 97 __r0 = (__r0 << 32) | ((USItype)n0); \ 98 if (__r0 < __m) \ 99 { \ 100 __q0--, __r0 += (d); \ 101 if (__r0 >= (d)) \ 102 if (__r0 < __m) \ 103 __q0--, __r0 += (d); \ 104 } \ 105 __r0 -= __m; \ 106 \ 107 (q) = (UWtype) (__q1 << 32) | __q0; \ 108 (r) = __r0; \ 109 } while (0) 110 111#define UDIV_NEEDS_NORMALIZATION 1 112 113#define abort() \ 114 return 0 115 116#ifdef __BIG_ENDIAN 117#define __BYTE_ORDER __BIG_ENDIAN 118#else 119#define __BYTE_ORDER __LITTLE_ENDIAN 120#endif 121