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121 lines
4.0 KiB
121 lines
4.0 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* arch/sparc64/math-emu/sfp-util.h |
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* |
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* Copyright (C) 1999 Jakub Jelinek ([email protected]) |
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* Copyright (C) 1999 David S. Miller ([email protected]) |
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* |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/sched.h> |
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#include <linux/types.h> |
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#include <asm/byteorder.h> |
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#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ |
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__asm__ ("addcc %4,%5,%1\n\t" \ |
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"add %2,%3,%0\n\t" \ |
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"bcs,a,pn %%xcc, 1f\n\t" \ |
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"add %0, 1, %0\n" \ |
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"1:" \ |
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: "=r" (sh), \ |
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"=&r" (sl) \ |
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: "r" ((UDItype)(ah)), \ |
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"r" ((UDItype)(bh)), \ |
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"r" ((UDItype)(al)), \ |
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"r" ((UDItype)(bl)) \ |
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: "cc") |
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#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ |
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__asm__ ("subcc %4,%5,%1\n\t" \ |
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"sub %2,%3,%0\n\t" \ |
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"bcs,a,pn %%xcc, 1f\n\t" \ |
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"sub %0, 1, %0\n" \ |
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"1:" \ |
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: "=r" (sh), \ |
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"=&r" (sl) \ |
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: "r" ((UDItype)(ah)), \ |
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"r" ((UDItype)(bh)), \ |
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"r" ((UDItype)(al)), \ |
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"r" ((UDItype)(bl)) \ |
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: "cc") |
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#define umul_ppmm(wh, wl, u, v) \ |
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do { \ |
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UDItype tmp1, tmp2, tmp3, tmp4; \ |
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__asm__ __volatile__ ( \ |
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"srl %7,0,%3\n\t" \ |
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"mulx %3,%6,%1\n\t" \ |
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"srlx %6,32,%2\n\t" \ |
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"mulx %2,%3,%4\n\t" \ |
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"sllx %4,32,%5\n\t" \ |
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"srl %6,0,%3\n\t" \ |
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"sub %1,%5,%5\n\t" \ |
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"srlx %5,32,%5\n\t" \ |
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"addcc %4,%5,%4\n\t" \ |
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"srlx %7,32,%5\n\t" \ |
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"mulx %3,%5,%3\n\t" \ |
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"mulx %2,%5,%5\n\t" \ |
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"sethi %%hi(0x80000000),%2\n\t" \ |
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"addcc %4,%3,%4\n\t" \ |
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"srlx %4,32,%4\n\t" \ |
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"add %2,%2,%2\n\t" \ |
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"movcc %%xcc,%%g0,%2\n\t" \ |
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"addcc %5,%4,%5\n\t" \ |
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"sllx %3,32,%3\n\t" \ |
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"add %1,%3,%1\n\t" \ |
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"add %5,%2,%0" \ |
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: "=r" (wh), \ |
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"=&r" (wl), \ |
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"=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4) \ |
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: "r" ((UDItype)(u)), \ |
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"r" ((UDItype)(v)) \ |
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: "cc"); \ |
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} while (0) |
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#define udiv_qrnnd(q, r, n1, n0, d) \ |
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do { \ |
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UWtype __d1, __d0, __q1, __q0, __r1, __r0, __m; \ |
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__d1 = (d >> 32); \ |
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__d0 = (USItype)d; \ |
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\ |
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__r1 = (n1) % __d1; \ |
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__q1 = (n1) / __d1; \ |
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__m = (UWtype) __q1 * __d0; \ |
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__r1 = (__r1 << 32) | (n0 >> 32); \ |
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if (__r1 < __m) \ |
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{ \ |
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__q1--, __r1 += (d); \ |
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if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */ \ |
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if (__r1 < __m) \ |
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__q1--, __r1 += (d); \ |
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} \ |
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__r1 -= __m; \ |
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\ |
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__r0 = __r1 % __d1; \ |
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__q0 = __r1 / __d1; \ |
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__m = (UWtype) __q0 * __d0; \ |
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__r0 = (__r0 << 32) | ((USItype)n0); \ |
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if (__r0 < __m) \ |
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{ \ |
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__q0--, __r0 += (d); \ |
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if (__r0 >= (d)) \ |
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if (__r0 < __m) \ |
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__q0--, __r0 += (d); \ |
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} \ |
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__r0 -= __m; \ |
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\ |
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(q) = (UWtype) (__q1 << 32) | __q0; \ |
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(r) = __r0; \ |
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} while (0) |
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#define UDIV_NEEDS_NORMALIZATION 1 |
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#define abort() \ |
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return 0 |
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#ifdef __BIG_ENDIAN |
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#define __BYTE_ORDER __BIG_ENDIAN |
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#else |
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#define __BYTE_ORDER __LITTLE_ENDIAN |
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#endif
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