1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * arch/sparc64/math-emu/sfp-util.h 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 1999 Jakub Jelinek (jj@ultra.linux.cz) 6*4882a593Smuzhiyun * Copyright (C) 1999 David S. Miller (davem@redhat.com) 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include <linux/kernel.h> 11*4882a593Smuzhiyun #include <linux/sched.h> 12*4882a593Smuzhiyun #include <linux/types.h> 13*4882a593Smuzhiyun #include <asm/byteorder.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define add_ssaaaa(sh, sl, ah, al, bh, bl) \ 16*4882a593Smuzhiyun __asm__ ("addcc %4,%5,%1\n\t" \ 17*4882a593Smuzhiyun "add %2,%3,%0\n\t" \ 18*4882a593Smuzhiyun "bcs,a,pn %%xcc, 1f\n\t" \ 19*4882a593Smuzhiyun "add %0, 1, %0\n" \ 20*4882a593Smuzhiyun "1:" \ 21*4882a593Smuzhiyun : "=r" (sh), \ 22*4882a593Smuzhiyun "=&r" (sl) \ 23*4882a593Smuzhiyun : "r" ((UDItype)(ah)), \ 24*4882a593Smuzhiyun "r" ((UDItype)(bh)), \ 25*4882a593Smuzhiyun "r" ((UDItype)(al)), \ 26*4882a593Smuzhiyun "r" ((UDItype)(bl)) \ 27*4882a593Smuzhiyun : "cc") 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun #define sub_ddmmss(sh, sl, ah, al, bh, bl) \ 30*4882a593Smuzhiyun __asm__ ("subcc %4,%5,%1\n\t" \ 31*4882a593Smuzhiyun "sub %2,%3,%0\n\t" \ 32*4882a593Smuzhiyun "bcs,a,pn %%xcc, 1f\n\t" \ 33*4882a593Smuzhiyun "sub %0, 1, %0\n" \ 34*4882a593Smuzhiyun "1:" \ 35*4882a593Smuzhiyun : "=r" (sh), \ 36*4882a593Smuzhiyun "=&r" (sl) \ 37*4882a593Smuzhiyun : "r" ((UDItype)(ah)), \ 38*4882a593Smuzhiyun "r" ((UDItype)(bh)), \ 39*4882a593Smuzhiyun "r" ((UDItype)(al)), \ 40*4882a593Smuzhiyun "r" ((UDItype)(bl)) \ 41*4882a593Smuzhiyun : "cc") 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun #define umul_ppmm(wh, wl, u, v) \ 44*4882a593Smuzhiyun do { \ 45*4882a593Smuzhiyun UDItype tmp1, tmp2, tmp3, tmp4; \ 46*4882a593Smuzhiyun __asm__ __volatile__ ( \ 47*4882a593Smuzhiyun "srl %7,0,%3\n\t" \ 48*4882a593Smuzhiyun "mulx %3,%6,%1\n\t" \ 49*4882a593Smuzhiyun "srlx %6,32,%2\n\t" \ 50*4882a593Smuzhiyun "mulx %2,%3,%4\n\t" \ 51*4882a593Smuzhiyun "sllx %4,32,%5\n\t" \ 52*4882a593Smuzhiyun "srl %6,0,%3\n\t" \ 53*4882a593Smuzhiyun "sub %1,%5,%5\n\t" \ 54*4882a593Smuzhiyun "srlx %5,32,%5\n\t" \ 55*4882a593Smuzhiyun "addcc %4,%5,%4\n\t" \ 56*4882a593Smuzhiyun "srlx %7,32,%5\n\t" \ 57*4882a593Smuzhiyun "mulx %3,%5,%3\n\t" \ 58*4882a593Smuzhiyun "mulx %2,%5,%5\n\t" \ 59*4882a593Smuzhiyun "sethi %%hi(0x80000000),%2\n\t" \ 60*4882a593Smuzhiyun "addcc %4,%3,%4\n\t" \ 61*4882a593Smuzhiyun "srlx %4,32,%4\n\t" \ 62*4882a593Smuzhiyun "add %2,%2,%2\n\t" \ 63*4882a593Smuzhiyun "movcc %%xcc,%%g0,%2\n\t" \ 64*4882a593Smuzhiyun "addcc %5,%4,%5\n\t" \ 65*4882a593Smuzhiyun "sllx %3,32,%3\n\t" \ 66*4882a593Smuzhiyun "add %1,%3,%1\n\t" \ 67*4882a593Smuzhiyun "add %5,%2,%0" \ 68*4882a593Smuzhiyun : "=r" (wh), \ 69*4882a593Smuzhiyun "=&r" (wl), \ 70*4882a593Smuzhiyun "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4) \ 71*4882a593Smuzhiyun : "r" ((UDItype)(u)), \ 72*4882a593Smuzhiyun "r" ((UDItype)(v)) \ 73*4882a593Smuzhiyun : "cc"); \ 74*4882a593Smuzhiyun } while (0) 75*4882a593Smuzhiyun 76*4882a593Smuzhiyun #define udiv_qrnnd(q, r, n1, n0, d) \ 77*4882a593Smuzhiyun do { \ 78*4882a593Smuzhiyun UWtype __d1, __d0, __q1, __q0, __r1, __r0, __m; \ 79*4882a593Smuzhiyun __d1 = (d >> 32); \ 80*4882a593Smuzhiyun __d0 = (USItype)d; \ 81*4882a593Smuzhiyun \ 82*4882a593Smuzhiyun __r1 = (n1) % __d1; \ 83*4882a593Smuzhiyun __q1 = (n1) / __d1; \ 84*4882a593Smuzhiyun __m = (UWtype) __q1 * __d0; \ 85*4882a593Smuzhiyun __r1 = (__r1 << 32) | (n0 >> 32); \ 86*4882a593Smuzhiyun if (__r1 < __m) \ 87*4882a593Smuzhiyun { \ 88*4882a593Smuzhiyun __q1--, __r1 += (d); \ 89*4882a593Smuzhiyun if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */ \ 90*4882a593Smuzhiyun if (__r1 < __m) \ 91*4882a593Smuzhiyun __q1--, __r1 += (d); \ 92*4882a593Smuzhiyun } \ 93*4882a593Smuzhiyun __r1 -= __m; \ 94*4882a593Smuzhiyun \ 95*4882a593Smuzhiyun __r0 = __r1 % __d1; \ 96*4882a593Smuzhiyun __q0 = __r1 / __d1; \ 97*4882a593Smuzhiyun __m = (UWtype) __q0 * __d0; \ 98*4882a593Smuzhiyun __r0 = (__r0 << 32) | ((USItype)n0); \ 99*4882a593Smuzhiyun if (__r0 < __m) \ 100*4882a593Smuzhiyun { \ 101*4882a593Smuzhiyun __q0--, __r0 += (d); \ 102*4882a593Smuzhiyun if (__r0 >= (d)) \ 103*4882a593Smuzhiyun if (__r0 < __m) \ 104*4882a593Smuzhiyun __q0--, __r0 += (d); \ 105*4882a593Smuzhiyun } \ 106*4882a593Smuzhiyun __r0 -= __m; \ 107*4882a593Smuzhiyun \ 108*4882a593Smuzhiyun (q) = (UWtype) (__q1 << 32) | __q0; \ 109*4882a593Smuzhiyun (r) = __r0; \ 110*4882a593Smuzhiyun } while (0) 111*4882a593Smuzhiyun 112*4882a593Smuzhiyun #define UDIV_NEEDS_NORMALIZATION 1 113*4882a593Smuzhiyun 114*4882a593Smuzhiyun #define abort() \ 115*4882a593Smuzhiyun return 0 116*4882a593Smuzhiyun 117*4882a593Smuzhiyun #ifdef __BIG_ENDIAN 118*4882a593Smuzhiyun #define __BYTE_ORDER __BIG_ENDIAN 119*4882a593Smuzhiyun #else 120*4882a593Smuzhiyun #define __BYTE_ORDER __LITTLE_ENDIAN 121*4882a593Smuzhiyun #endif 122