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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/sparc/math-emu/sfp-util_64.h
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/* 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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