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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | /* SPDX-License-Identifier: GPL-2.0 */ /* * 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 |