xref: /linux/lib/crypto/mpi/longlong.h (revision a1c613ae4c322ddd58d5a8539dbfba2a0380a8c0)

/* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
 * Note: I added some stuff for use with gnupg
 *
 * Copyright (C) 1991, 1992, 1993, 1994, 1996, 1998,
 *	2000, 2001, 2002, 2003 Free Software Foundation, Inc.
 *
 * This file is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Library General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This file is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this file; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA. */

#include <linux/count_zeros.h>

/* You have to define the following before including this file:
 *
 * UWtype -- An unsigned type, default type for operations (typically a "word")
 * UHWtype -- An unsigned type, at least half the size of UWtype.
 * UDWtype -- An unsigned type, at least twice as large a UWtype
 * W_TYPE_SIZE -- size in bits of UWtype
 *
 * SItype, USItype -- Signed and unsigned 32 bit types.
 * DItype, UDItype -- Signed and unsigned 64 bit types.
 *
 * On a 32 bit machine UWtype should typically be USItype;
 * on a 64 bit machine, UWtype should typically be UDItype.
*/

#define __BITS4 (W_TYPE_SIZE / 4)
#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))
#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))

/* This is used to make sure no undesirable sharing between different libraries
	that use this file takes place.  */
#ifndef __MPN
#define __MPN(x) __##x
#endif

/* Define auxiliary asm macros.
 *
 * 1) umul_ppmm(high_prod, low_prod, multiplier, multiplicand) multiplies two
 * UWtype integers MULTIPLIER and MULTIPLICAND, and generates a two UWtype
 * word product in HIGH_PROD and LOW_PROD.
 *
 * 2) __umulsidi3(a,b) multiplies two UWtype integers A and B, and returns a
 * UDWtype product.  This is just a variant of umul_ppmm.

 * 3) udiv_qrnnd(quotient, remainder, high_numerator, low_numerator,
 * denominator) divides a UDWtype, composed by the UWtype integers
 * HIGH_NUMERATOR and LOW_NUMERATOR, by DENOMINATOR and places the quotient
 * in QUOTIENT and the remainder in REMAINDER.	HIGH_NUMERATOR must be less
 * than DENOMINATOR for correct operation.  If, in addition, the most
 * significant bit of DENOMINATOR must be 1, then the pre-processor symbol
 * UDIV_NEEDS_NORMALIZATION is defined to 1.
 * 4) sdiv_qrnnd(quotient, remainder, high_numerator, low_numerator,
 * denominator).  Like udiv_qrnnd but the numbers are signed.  The quotient
 * is rounded towards 0.
 *
 * 5) count_leading_zeros(count, x) counts the number of zero-bits from the
 * msb to the first non-zero bit in the UWtype X.  This is the number of
 * steps X needs to be shifted left to set the msb.  Undefined for X == 0,
 * unless the symbol COUNT_LEADING_ZEROS_0 is defined to some value.
 *
 * 6) count_trailing_zeros(count, x) like count_leading_zeros, but counts
 * from the least significant end.
 *
 * 7) add_ssaaaa(high_sum, low_sum, high_addend_1, low_addend_1,
 * high_addend_2, low_addend_2) adds two UWtype integers, composed by
 * HIGH_ADDEND_1 and LOW_ADDEND_1, and HIGH_ADDEND_2 and LOW_ADDEND_2
 * respectively.  The result is placed in HIGH_SUM and LOW_SUM.  Overflow
 * (i.e. carry out) is not stored anywhere, and is lost.
 *
 * 8) sub_ddmmss(high_difference, low_difference, high_minuend, low_minuend,
 * high_subtrahend, low_subtrahend) subtracts two two-word UWtype integers,
 * composed by HIGH_MINUEND_1 and LOW_MINUEND_1, and HIGH_SUBTRAHEND_2 and
 * LOW_SUBTRAHEND_2 respectively.  The result is placed in HIGH_DIFFERENCE
 * and LOW_DIFFERENCE.	Overflow (i.e. carry out) is not stored anywhere,
 * and is lost.
 *
 * If any of these macros are left undefined for a particular CPU,
 * C macros are used.  */

/* The CPUs come in alphabetical order below.
 *
 * Please add support for more CPUs here, or improve the current support
 * for the CPUs below!	*/

#if defined(__GNUC__) && !defined(NO_ASM)

/* We sometimes need to clobber "cc" with gcc2, but that would not be
	understood by gcc1.	Use cpp to avoid major code duplication.  */
#if __GNUC__ < 2
#define __CLOBBER_CC
#define __AND_CLOBBER_CC
#else /* __GNUC__ >= 2 */
#define __CLOBBER_CC : "cc"
#define __AND_CLOBBER_CC , "cc"
#endif /* __GNUC__ < 2 */

/***************************************
	**************  A29K  *****************
	***************************************/
#if (defined(__a29k__) || defined(_AM29K)) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("add %1,%4,%5\n" \
		"addc %0,%2,%3" \
	: "=r" ((USItype)(sh)), \
		"=&r" ((USItype)(sl)) \
	: "%r" ((USItype)(ah)), \
		"rI" ((USItype)(bh)), \
		"%r" ((USItype)(al)), \
		"rI" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("sub %1,%4,%5\n" \
		"subc %0,%2,%3" \
	: "=r" ((USItype)(sh)), \
		"=&r" ((USItype)(sl)) \
	: "r" ((USItype)(ah)), \
		"rI" ((USItype)(bh)), \
		"r" ((USItype)(al)), \
		"rI" ((USItype)(bl)))
#define umul_ppmm(xh, xl, m0, m1) \
do { \
		USItype __m0 = (m0), __m1 = (m1); \
		__asm__ ("multiplu %0,%1,%2" \
		: "=r" ((USItype)(xl)) \
		: "r" (__m0), \
			"r" (__m1)); \
		__asm__ ("multmu %0,%1,%2" \
		: "=r" ((USItype)(xh)) \
		: "r" (__m0), \
			"r" (__m1)); \
} while (0)
#define udiv_qrnnd(q, r, n1, n0, d) \
	__asm__ ("dividu %0,%3,%4" \
	: "=r" ((USItype)(q)), \
		"=q" ((USItype)(r)) \
	: "1" ((USItype)(n1)), \
		"r" ((USItype)(n0)), \
		"r" ((USItype)(d)))
#endif /* __a29k__ */

#if defined(__alpha) && W_TYPE_SIZE == 64
#define umul_ppmm(ph, pl, m0, m1)			\
do {							\
	UDItype __m0 = (m0), __m1 = (m1);		\
	(ph) = __builtin_alpha_umulh(__m0, __m1);	\
	(pl) = __m0 * __m1;                             \
} while (0)
#define UMUL_TIME 46
#ifndef LONGLONG_STANDALONE
#define udiv_qrnnd(q, r, n1, n0, d) \
do { UDItype __r; \
	(q) = __udiv_qrnnd(&__r, (n1), (n0), (d)); \
	(r) = __r; \
} while (0)
extern UDItype __udiv_qrnnd(UDItype *, UDItype, UDItype, UDItype);
#define UDIV_TIME 220
#endif /* LONGLONG_STANDALONE */
#endif /* __alpha */

/***************************************
	**************  ARM  ******************
	***************************************/
#if defined(__arm__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("adds %1, %4, %5\n" \
		"adc  %0, %2, %3" \
	: "=r" (sh), \
		"=&r" (sl) \
	: "%r" ((USItype)(ah)), \
		"rI" ((USItype)(bh)), \
		"%r" ((USItype)(al)), \
		"rI" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("subs %1, %4, %5\n" \
		"sbc  %0, %2, %3" \
	: "=r" (sh), \
		"=&r" (sl) \
	: "r" ((USItype)(ah)), \
		"rI" ((USItype)(bh)), \
		"r" ((USItype)(al)), \
		"rI" ((USItype)(bl)))
#if defined __ARM_ARCH_2__ || defined __ARM_ARCH_3__
#define umul_ppmm(xh, xl, a, b) \
	__asm__ ("@ Inlined umul_ppmm\n" \
		"mov	%|r0, %2, lsr #16		@ AAAA\n" \
		"mov	%|r2, %3, lsr #16		@ BBBB\n" \
		"bic	%|r1, %2, %|r0, lsl #16		@ aaaa\n" \
		"bic	%0, %3, %|r2, lsl #16		@ bbbb\n" \
		"mul	%1, %|r1, %|r2			@ aaaa * BBBB\n" \
		"mul	%|r2, %|r0, %|r2		@ AAAA * BBBB\n" \
		"mul	%|r1, %0, %|r1			@ aaaa * bbbb\n" \
		"mul	%0, %|r0, %0			@ AAAA * bbbb\n" \
		"adds	%|r0, %1, %0			@ central sum\n" \
		"addcs	%|r2, %|r2, #65536\n" \
		"adds	%1, %|r1, %|r0, lsl #16\n" \
		"adc	%0, %|r2, %|r0, lsr #16" \
	: "=&r" (xh), \
		"=r" (xl) \
	: "r" ((USItype)(a)), \
		"r" ((USItype)(b)) \
	: "r0", "r1", "r2")
#else
#define umul_ppmm(xh, xl, a, b) \
	__asm__ ("@ Inlined umul_ppmm\n" \
		"umull %1, %0, %2, %3" \
	: "=&r" (xh), \
		"=&r" (xl) \
	: "r" ((USItype)(a)), \
		"r" ((USItype)(b)) \
	: "r0", "r1")
#endif
#define UMUL_TIME 20
#define UDIV_TIME 100
#endif /* __arm__ */

/***************************************
	**************  CLIPPER  **************
	***************************************/
#if defined(__clipper__) && W_TYPE_SIZE == 32
#define umul_ppmm(w1, w0, u, v) \
	({union {UDItype __ll; \
		struct {USItype __l, __h; } __i; \
	} __xx; \
	__asm__ ("mulwux %2,%0" \
	: "=r" (__xx.__ll) \
	: "%0" ((USItype)(u)), \
		"r" ((USItype)(v))); \
	(w1) = __xx.__i.__h; (w0) = __xx.__i.__l; })
#define smul_ppmm(w1, w0, u, v) \
	({union {DItype __ll; \
		struct {SItype __l, __h; } __i; \
	} __xx; \
	__asm__ ("mulwx %2,%0" \
	: "=r" (__xx.__ll) \
	: "%0" ((SItype)(u)), \
		"r" ((SItype)(v))); \
	(w1) = __xx.__i.__h; (w0) = __xx.__i.__l; })
#define __umulsidi3(u, v) \
	({UDItype __w; \
	__asm__ ("mulwux %2,%0" \
	: "=r" (__w) \
	: "%0" ((USItype)(u)), \
		"r" ((USItype)(v))); \
	__w; })
#endif /* __clipper__ */

/***************************************
	**************  GMICRO  ***************
	***************************************/
#if defined(__gmicro__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("add.w %5,%1\n" \
		"addx %3,%0" \
	: "=g" ((USItype)(sh)), \
		"=&g" ((USItype)(sl)) \
	: "%0" ((USItype)(ah)), \
		"g" ((USItype)(bh)), \
		"%1" ((USItype)(al)), \
		"g" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("sub.w %5,%1\n" \
		"subx %3,%0" \
	: "=g" ((USItype)(sh)), \
		"=&g" ((USItype)(sl)) \
	: "0" ((USItype)(ah)), \
		"g" ((USItype)(bh)), \
		"1" ((USItype)(al)), \
		"g" ((USItype)(bl)))
#define umul_ppmm(ph, pl, m0, m1) \
	__asm__ ("mulx %3,%0,%1" \
	: "=g" ((USItype)(ph)), \
		"=r" ((USItype)(pl)) \
	: "%0" ((USItype)(m0)), \
		"g" ((USItype)(m1)))
#define udiv_qrnnd(q, r, nh, nl, d) \
	__asm__ ("divx %4,%0,%1" \
	: "=g" ((USItype)(q)), \
		"=r" ((USItype)(r)) \
	: "1" ((USItype)(nh)), \
		"0" ((USItype)(nl)), \
		"g" ((USItype)(d)))
#endif

/***************************************
	**************  HPPA  *****************
	***************************************/
#if defined(__hppa) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("add %4,%5,%1\n" \
		   "addc %2,%3,%0" \
	: "=r" ((USItype)(sh)), \
	     "=&r" ((USItype)(sl)) \
	: "%rM" ((USItype)(ah)), \
	     "rM" ((USItype)(bh)), \
	     "%rM" ((USItype)(al)), \
	     "rM" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("sub %4,%5,%1\n" \
	   "subb %2,%3,%0" \
	: "=r" ((USItype)(sh)), \
	     "=&r" ((USItype)(sl)) \
	: "rM" ((USItype)(ah)), \
	     "rM" ((USItype)(bh)), \
	     "rM" ((USItype)(al)), \
	     "rM" ((USItype)(bl)))
#if 0 && defined(_PA_RISC1_1)
/* xmpyu uses floating point register which is not allowed in Linux kernel. */
#define umul_ppmm(wh, wl, u, v) \
do { \
	union {UDItype __ll; \
	struct {USItype __h, __l; } __i; \
	} __xx; \
	__asm__ ("xmpyu %1,%2,%0" \
	: "=*f" (__xx.__ll) \
	: "*f" ((USItype)(u)), \
	       "*f" ((USItype)(v))); \
	(wh) = __xx.__i.__h; \
	(wl) = __xx.__i.__l; \
} while (0)
#define UMUL_TIME 8
#define UDIV_TIME 60
#else
#define UMUL_TIME 40
#define UDIV_TIME 80
#endif
#if 0 /* #ifndef LONGLONG_STANDALONE */
#define udiv_qrnnd(q, r, n1, n0, d) \
do { USItype __r; \
	(q) = __udiv_qrnnd(&__r, (n1), (n0), (d)); \
	(r) = __r; \
} while (0)
extern USItype __udiv_qrnnd();
#endif /* LONGLONG_STANDALONE */
#endif /* hppa */

/***************************************
	**************  I370  *****************
	***************************************/
#if (defined(__i370__) || defined(__mvs__)) && W_TYPE_SIZE == 32
#define umul_ppmm(xh, xl, m0, m1) \
do { \
	union {UDItype __ll; \
	   struct {USItype __h, __l; } __i; \
	} __xx; \
	USItype __m0 = (m0), __m1 = (m1); \
	__asm__ ("mr %0,%3" \
	: "=r" (__xx.__i.__h), \
	       "=r" (__xx.__i.__l) \
	: "%1" (__m0), \
	       "r" (__m1)); \
	(xh) = __xx.__i.__h; (xl) = __xx.__i.__l; \
	(xh) += ((((SItype) __m0 >> 31) & __m1) \
	     + (((SItype) __m1 >> 31) & __m0)); \
} while (0)
#define smul_ppmm(xh, xl, m0, m1) \
do { \
	union {DItype __ll; \
	   struct {USItype __h, __l; } __i; \
	} __xx; \
	__asm__ ("mr %0,%3" \
	: "=r" (__xx.__i.__h), \
	       "=r" (__xx.__i.__l) \
	: "%1" (m0), \
	       "r" (m1)); \
	(xh) = __xx.__i.__h; (xl) = __xx.__i.__l; \
} while (0)
#define sdiv_qrnnd(q, r, n1, n0, d) \
do { \
	union {DItype __ll; \
	   struct {USItype __h, __l; } __i; \
	} __xx; \
	__xx.__i.__h = n1; __xx.__i.__l = n0; \
	__asm__ ("dr %0,%2" \
	: "=r" (__xx.__ll) \
	: "0" (__xx.__ll), "r" (d)); \
	(q) = __xx.__i.__l; (r) = __xx.__i.__h; \
} while (0)
#endif

/***************************************
	**************  I386  *****************
	***************************************/
#undef __i386__
#if (defined(__i386__) || defined(__i486__)) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("addl %5,%1\n" \
	   "adcl %3,%0" \
	: "=r" (sh), \
	     "=&r" (sl) \
	: "%0" ((USItype)(ah)), \
	     "g" ((USItype)(bh)), \
	     "%1" ((USItype)(al)), \
	     "g" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("subl %5,%1\n" \
	   "sbbl %3,%0" \
	: "=r" (sh), \
	     "=&r" (sl) \
	: "0" ((USItype)(ah)), \
	     "g" ((USItype)(bh)), \
	     "1" ((USItype)(al)), \
	     "g" ((USItype)(bl)))
#define umul_ppmm(w1, w0, u, v) \
	__asm__ ("mull %3" \
	: "=a" (w0), \
	     "=d" (w1) \
	: "%0" ((USItype)(u)), \
	     "rm" ((USItype)(v)))
#define udiv_qrnnd(q, r, n1, n0, d) \
	__asm__ ("divl %4" \
	: "=a" (q), \
	     "=d" (r) \
	: "0" ((USItype)(n0)), \
	     "1" ((USItype)(n1)), \
	     "rm" ((USItype)(d)))
#ifndef UMUL_TIME
#define UMUL_TIME 40
#endif
#ifndef UDIV_TIME
#define UDIV_TIME 40
#endif
#endif /* 80x86 */

/***************************************
	**************  I860  *****************
	***************************************/
#if defined(__i860__) && W_TYPE_SIZE == 32
#define rshift_rhlc(r, h, l, c) \
	__asm__ ("shr %3,r0,r0\n" \
	"shrd %1,%2,%0" \
	   "=r" (r) : "r" (h), "r" (l), "rn" (c))
#endif /* i860 */

/***************************************
	**************  I960  *****************
	***************************************/
#if defined(__i960__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("cmpo 1,0\n" \
	"addc %5,%4,%1\n" \
	"addc %3,%2,%0" \
	: "=r" ((USItype)(sh)), \
	     "=&r" ((USItype)(sl)) \
	: "%dI" ((USItype)(ah)), \
	     "dI" ((USItype)(bh)), \
	     "%dI" ((USItype)(al)), \
	     "dI" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("cmpo 0,0\n" \
	"subc %5,%4,%1\n" \
	"subc %3,%2,%0" \
	: "=r" ((USItype)(sh)), \
	     "=&r" ((USItype)(sl)) \
	: "dI" ((USItype)(ah)), \
	     "dI" ((USItype)(bh)), \
	     "dI" ((USItype)(al)), \
	     "dI" ((USItype)(bl)))
#define umul_ppmm(w1, w0, u, v) \
	({union {UDItype __ll; \
	   struct {USItype __l, __h; } __i; \
	} __xx; \
	__asm__ ("emul        %2,%1,%0" \
	: "=d" (__xx.__ll) \
	: "%dI" ((USItype)(u)), \
	     "dI" ((USItype)(v))); \
	(w1) = __xx.__i.__h; (w0) = __xx.__i.__l; })
#define __umulsidi3(u, v) \
	({UDItype __w; \
	__asm__ ("emul      %2,%1,%0" \
	: "=d" (__w) \
	: "%dI" ((USItype)(u)), \
	       "dI" ((USItype)(v))); \
	__w; })
#define udiv_qrnnd(q, r, nh, nl, d) \
do { \
	union {UDItype __ll; \
	   struct {USItype __l, __h; } __i; \
	} __nn; \
	__nn.__i.__h = (nh); __nn.__i.__l = (nl); \
	__asm__ ("ediv %d,%n,%0" \
	: "=d" (__rq.__ll) \
	: "dI" (__nn.__ll), \
	     "dI" ((USItype)(d))); \
	(r) = __rq.__i.__l; (q) = __rq.__i.__h; \
} while (0)
#if defined(__i960mx)		/* what is the proper symbol to test??? */
#define rshift_rhlc(r, h, l, c) \
do { \
	union {UDItype __ll; \
	   struct {USItype __l, __h; } __i; \
	} __nn; \
	__nn.__i.__h = (h); __nn.__i.__l = (l); \
	__asm__ ("shre %2,%1,%0" \
	: "=d" (r) : "dI" (__nn.__ll), "dI" (c)); \
}
#endif /* i960mx */
#endif /* i960 */

/***************************************
	**************  68000	****************
	***************************************/
#if (defined(__mc68000__) || defined(__mc68020__) || defined(__NeXT__) || defined(mc68020)) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("add%.l %5,%1\n" \
	   "addx%.l %3,%0" \
	: "=d" ((USItype)(sh)), \
	     "=&d" ((USItype)(sl)) \
	: "%0" ((USItype)(ah)), \
	     "d" ((USItype)(bh)), \
	     "%1" ((USItype)(al)), \
	     "g" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("sub%.l %5,%1\n" \
	   "subx%.l %3,%0" \
	: "=d" ((USItype)(sh)), \
	     "=&d" ((USItype)(sl)) \
	: "0" ((USItype)(ah)), \
	     "d" ((USItype)(bh)), \
	     "1" ((USItype)(al)), \
	     "g" ((USItype)(bl)))
#if (defined(__mc68020__) || defined(__NeXT__) || defined(mc68020))
#define umul_ppmm(w1, w0, u, v) \
	__asm__ ("mulu%.l %3,%1:%0" \
	: "=d" ((USItype)(w0)), \
	     "=d" ((USItype)(w1)) \
	: "%0" ((USItype)(u)), \
	     "dmi" ((USItype)(v)))
#define UMUL_TIME 45
#define udiv_qrnnd(q, r, n1, n0, d) \
	__asm__ ("divu%.l %4,%1:%0" \
	: "=d" ((USItype)(q)), \
	     "=d" ((USItype)(r)) \
	: "0" ((USItype)(n0)), \
	     "1" ((USItype)(n1)), \
	     "dmi" ((USItype)(d)))
#define UDIV_TIME 90
#define sdiv_qrnnd(q, r, n1, n0, d) \
	__asm__ ("divs%.l %4,%1:%0" \
	: "=d" ((USItype)(q)), \
	     "=d" ((USItype)(r)) \
	: "0" ((USItype)(n0)), \
	     "1" ((USItype)(n1)), \
	     "dmi" ((USItype)(d)))
#else /* not mc68020 */
#define umul_ppmm(xh, xl, a, b) \
do { USItype __umul_tmp1, __umul_tmp2; \
	__asm__ ("| Inlined umul_ppmm\n" \
	"move%.l %5,%3\n" \
	"move%.l %2,%0\n" \
	"move%.w %3,%1\n" \
	"swap	%3\n" \
	"swap	%0\n" \
	"mulu	%2,%1\n" \
	"mulu	%3,%0\n" \
	"mulu	%2,%3\n" \
	"swap	%2\n" \
	"mulu	%5,%2\n" \
	"add%.l	%3,%2\n" \
	"jcc	1f\n" \
	"add%.l	%#0x10000,%0\n" \
	"1:	move%.l %2,%3\n" \
	"clr%.w	%2\n" \
	"swap	%2\n" \
	"swap	%3\n" \
	"clr%.w	%3\n" \
	"add%.l	%3,%1\n" \
	"addx%.l %2,%0\n" \
	"| End inlined umul_ppmm" \
	: "=&d" ((USItype)(xh)), "=&d" ((USItype)(xl)), \
		"=d" (__umul_tmp1), "=&d" (__umul_tmp2) \
	: "%2" ((USItype)(a)), "d" ((USItype)(b))); \
} while (0)
#define UMUL_TIME 100
#define UDIV_TIME 400
#endif /* not mc68020 */
#endif /* mc68000 */

/***************************************
	**************  88000	****************
	***************************************/
#if defined(__m88000__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("addu.co %1,%r4,%r5\n" \
	   "addu.ci %0,%r2,%r3" \
	: "=r" ((USItype)(sh)), \
	     "=&r" ((USItype)(sl)) \
	: "%rJ" ((USItype)(ah)), \
	     "rJ" ((USItype)(bh)), \
	     "%rJ" ((USItype)(al)), \
	     "rJ" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("subu.co %1,%r4,%r5\n" \
	   "subu.ci %0,%r2,%r3" \
	: "=r" ((USItype)(sh)), \
	     "=&r" ((USItype)(sl)) \
	: "rJ" ((USItype)(ah)), \
	     "rJ" ((USItype)(bh)), \
	     "rJ" ((USItype)(al)), \
	     "rJ" ((USItype)(bl)))
#if defined(__m88110__)
#define umul_ppmm(wh, wl, u, v) \
do { \
	union {UDItype __ll; \
	   struct {USItype __h, __l; } __i; \
	} __x; \
	__asm__ ("mulu.d %0,%1,%2" : "=r" (__x.__ll) : "r" (u), "r" (v)); \
	(wh) = __x.__i.__h; \
	(wl) = __x.__i.__l; \
} while (0)
#define udiv_qrnnd(q, r, n1, n0, d) \
	({union {UDItype __ll; \
	   struct {USItype __h, __l; } __i; \
	} __x, __q; \
	__x.__i.__h = (n1); __x.__i.__l = (n0); \
	__asm__ ("divu.d %0,%1,%2" \
	: "=r" (__q.__ll) : "r" (__x.__ll), "r" (d)); \
	(r) = (n0) - __q.__l * (d); (q) = __q.__l; })
#define UMUL_TIME 5
#define UDIV_TIME 25
#else
#define UMUL_TIME 17
#define UDIV_TIME 150
#endif /* __m88110__ */
#endif /* __m88000__ */

/***************************************
	**************  MIPS  *****************
	***************************************/
#if defined(__mips__) && W_TYPE_SIZE == 32
#define umul_ppmm(w1, w0, u, v)			\
do {						\
	UDItype __ll = (UDItype)(u) * (v);	\
	w1 = __ll >> 32;			\
	w0 = __ll;				\
} while (0)
#define UMUL_TIME 10
#define UDIV_TIME 100
#endif /* __mips__ */

/***************************************
	**************  MIPS/64  **************
	***************************************/
#if (defined(__mips) && __mips >= 3) && W_TYPE_SIZE == 64
#if defined(__mips_isa_rev) && __mips_isa_rev >= 6 && defined(CONFIG_CC_IS_GCC)
/*
 * GCC ends up emitting a __multi3 intrinsic call for MIPS64r6 with the plain C
 * code below, so we special case MIPS64r6 until the compiler can do better.
 */
#define umul_ppmm(w1, w0, u, v)						\
do {									\
	__asm__ ("dmulu %0,%1,%2"					\
		 : "=d" ((UDItype)(w0))					\
		 : "d" ((UDItype)(u)),					\
		   "d" ((UDItype)(v)));					\
	__asm__ ("dmuhu %0,%1,%2"					\
		 : "=d" ((UDItype)(w1))					\
		 : "d" ((UDItype)(u)),					\
		   "d" ((UDItype)(v)));					\
} while (0)
#else
#define umul_ppmm(w1, w0, u, v) \
do {									\
	typedef unsigned int __ll_UTItype __attribute__((mode(TI)));	\
	__ll_UTItype __ll = (__ll_UTItype)(u) * (v);			\
	w1 = __ll >> 64;						\
	w0 = __ll;							\
} while (0)
#endif
#define UMUL_TIME 20
#define UDIV_TIME 140
#endif /* __mips__ */

/***************************************
	**************  32000	****************
	***************************************/
#if defined(__ns32000__) && W_TYPE_SIZE == 32
#define umul_ppmm(w1, w0, u, v) \
	({union {UDItype __ll; \
	   struct {USItype __l, __h; } __i; \
	} __xx; \
	__asm__ ("meid %2,%0" \
	: "=g" (__xx.__ll) \
	: "%0" ((USItype)(u)), \
	     "g" ((USItype)(v))); \
	(w1) = __xx.__i.__h; (w0) = __xx.__i.__l; })
#define __umulsidi3(u, v) \
	({UDItype __w; \
	__asm__ ("meid %2,%0" \
	: "=g" (__w) \
	: "%0" ((USItype)(u)), \
	       "g" ((USItype)(v))); \
	__w; })
#define udiv_qrnnd(q, r, n1, n0, d) \
	({union {UDItype __ll; \
	   struct {USItype __l, __h; } __i; \
	} __xx; \
	__xx.__i.__h = (n1); __xx.__i.__l = (n0); \
	__asm__ ("deid %2,%0" \
	: "=g" (__xx.__ll) \
	: "0" (__xx.__ll), \
	     "g" ((USItype)(d))); \
	(r) = __xx.__i.__l; (q) = __xx.__i.__h; })
#endif /* __ns32000__ */

/***************************************
	**************  PPC  ******************
	***************************************/
#if (defined(_ARCH_PPC) || defined(_IBMR2)) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
do { \
	if (__builtin_constant_p(bh) && (bh) == 0) \
		__asm__ ("{a%I4|add%I4c} %1,%3,%4\n\t{aze|addze} %0,%2" \
		: "=r" (sh), \
		"=&r" (sl) \
		: "%r" ((USItype)(ah)), \
		"%r" ((USItype)(al)), \
		"rI" ((USItype)(bl))); \
	else if (__builtin_constant_p(bh) && (bh) == ~(USItype) 0) \
		__asm__ ("{a%I4|add%I4c} %1,%3,%4\n\t{ame|addme} %0,%2" \
		: "=r" (sh), \
		"=&r" (sl) \
		: "%r" ((USItype)(ah)), \
		"%r" ((USItype)(al)), \
		"rI" ((USItype)(bl))); \
	else \
		__asm__ ("{a%I5|add%I5c} %1,%4,%5\n\t{ae|adde} %0,%2,%3" \
		: "=r" (sh), \
		"=&r" (sl) \
		: "%r" ((USItype)(ah)), \
		"r" ((USItype)(bh)), \
		"%r" ((USItype)(al)), \
		"rI" ((USItype)(bl))); \
} while (0)
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
do { \
	if (__builtin_constant_p(ah) && (ah) == 0) \
		__asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{sfze|subfze} %0,%2" \
		: "=r" (sh), \
		"=&r" (sl) \
		: "r" ((USItype)(bh)), \
		"rI" ((USItype)(al)), \
		"r" ((USItype)(bl))); \
	else if (__builtin_constant_p(ah) && (ah) == ~(USItype) 0) \
		__asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{sfme|subfme} %0,%2" \
		: "=r" (sh), \
		"=&r" (sl) \
		: "r" ((USItype)(bh)), \
		"rI" ((USItype)(al)), \
		"r" ((USItype)(bl))); \
	else if (__builtin_constant_p(bh) && (bh) == 0) \
		__asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{ame|addme} %0,%2" \
		: "=r" (sh), \
		"=&r" (sl) \
		: "r" ((USItype)(ah)), \
		"rI" ((USItype)(al)), \
		"r" ((USItype)(bl))); \
	else if (__builtin_constant_p(bh) && (bh) == ~(USItype) 0) \
		__asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{aze|addze} %0,%2" \
		: "=r" (sh), \
		"=&r" (sl) \
		: "r" ((USItype)(ah)), \
		"rI" ((USItype)(al)), \
		"r" ((USItype)(bl))); \
	else \
		__asm__ ("{sf%I4|subf%I4c} %1,%5,%4\n\t{sfe|subfe} %0,%3,%2" \
		: "=r" (sh), \
		"=&r" (sl) \
		: "r" ((USItype)(ah)), \
		"r" ((USItype)(bh)), \
		"rI" ((USItype)(al)), \
		"r" ((USItype)(bl))); \
} while (0)
#if defined(_ARCH_PPC)
#define umul_ppmm(ph, pl, m0, m1) \
do { \
	USItype __m0 = (m0), __m1 = (m1); \
	__asm__ ("mulhwu %0,%1,%2" \
	: "=r" (ph) \
	: "%r" (__m0), \
	"r" (__m1)); \
	(pl) = __m0 * __m1; \
} while (0)
#define UMUL_TIME 15
#define smul_ppmm(ph, pl, m0, m1) \
do { \
	SItype __m0 = (m0), __m1 = (m1); \
	__asm__ ("mulhw %0,%1,%2" \
	: "=r" ((SItype) ph) \
	: "%r" (__m0), \
	"r" (__m1)); \
	(pl) = __m0 * __m1; \
} while (0)
#define SMUL_TIME 14
#define UDIV_TIME 120
#else
#define umul_ppmm(xh, xl, m0, m1) \
do { \
	USItype __m0 = (m0), __m1 = (m1); \
	__asm__ ("mul %0,%2,%3" \
	: "=r" ((USItype)(xh)), \
	"=q" ((USItype)(xl)) \
	: "r" (__m0), \
	"r" (__m1)); \
	(xh) += ((((SItype) __m0 >> 31) & __m1) \
	+ (((SItype) __m1 >> 31) & __m0)); \
} while (0)
#define UMUL_TIME 8
#define smul_ppmm(xh, xl, m0, m1) \
	__asm__ ("mul %0,%2,%3" \
	: "=r" ((SItype)(xh)), \
	"=q" ((SItype)(xl)) \
	: "r" (m0), \
	"r" (m1))
#define SMUL_TIME 4
#define sdiv_qrnnd(q, r, nh, nl, d) \
	__asm__ ("div %0,%2,%4" \
	: "=r" ((SItype)(q)), "=q" ((SItype)(r)) \
	: "r" ((SItype)(nh)), "1" ((SItype)(nl)), "r" ((SItype)(d)))
#define UDIV_TIME 100
#endif
#endif /* Power architecture variants.  */

/***************************************
	**************  PYR  ******************
	***************************************/
#if defined(__pyr__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("addw        %5,%1\n" \
	"addwc	%3,%0" \
	: "=r" ((USItype)(sh)), \
	"=&r" ((USItype)(sl)) \
	: "%0" ((USItype)(ah)), \
	"g" ((USItype)(bh)), \
	"%1" ((USItype)(al)), \
	"g" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("subw        %5,%1\n" \
	"subwb	%3,%0" \
	: "=r" ((USItype)(sh)), \
	"=&r" ((USItype)(sl)) \
	: "0" ((USItype)(ah)), \
	"g" ((USItype)(bh)), \
	"1" ((USItype)(al)), \
	"g" ((USItype)(bl)))
	/* This insn works on Pyramids with AP, XP, or MI CPUs, but not with SP.  */
#define umul_ppmm(w1, w0, u, v) \
	({union {UDItype __ll; \
	struct {USItype __h, __l; } __i; \
	} __xx; \
	__asm__ ("movw %1,%R0\n" \
	"uemul %2,%0" \
	: "=&r" (__xx.__ll) \
	: "g" ((USItype) (u)), \
	"g" ((USItype)(v))); \
	(w1) = __xx.__i.__h; (w0) = __xx.__i.__l; })
#endif /* __pyr__ */

/***************************************
	**************  RT/ROMP  **************
	***************************************/
#if defined(__ibm032__) /* RT/ROMP */	&& W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("a %1,%5\n" \
	"ae %0,%3" \
	: "=r" ((USItype)(sh)), \
	"=&r" ((USItype)(sl)) \
	: "%0" ((USItype)(ah)), \
	"r" ((USItype)(bh)), \
	"%1" ((USItype)(al)), \
	"r" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("s %1,%5\n" \
	"se %0,%3" \
	: "=r" ((USItype)(sh)), \
	"=&r" ((USItype)(sl)) \
	: "0" ((USItype)(ah)), \
	"r" ((USItype)(bh)), \
	"1" ((USItype)(al)), \
	"r" ((USItype)(bl)))
#define umul_ppmm(ph, pl, m0, m1) \
do { \
	USItype __m0 = (m0), __m1 = (m1); \
	__asm__ ( \
	"s       r2,r2\n" \
	"mts	r10,%2\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"m	r2,%3\n" \
	"cas	%0,r2,r0\n" \
	"mfs	r10,%1" \
	: "=r" ((USItype)(ph)), \
	"=r" ((USItype)(pl)) \
	: "%r" (__m0), \
	"r" (__m1) \
	: "r2"); \
	(ph) += ((((SItype) __m0 >> 31) & __m1) \
	+ (((SItype) __m1 >> 31) & __m0)); \
} while (0)
#define UMUL_TIME 20
#define UDIV_TIME 200
#endif /* RT/ROMP */

/***************************************
	**************  SH2  ******************
	***************************************/
#if (defined(__sh2__) || defined(__sh3__) || defined(__SH4__)) \
	&& W_TYPE_SIZE == 32
#define umul_ppmm(w1, w0, u, v) \
	__asm__ ( \
	"dmulu.l %2,%3\n" \
	"sts	macl,%1\n" \
	"sts	mach,%0" \
	: "=r" ((USItype)(w1)), \
	"=r" ((USItype)(w0)) \
	: "r" ((USItype)(u)), \
	"r" ((USItype)(v)) \
	: "macl", "mach")
#define UMUL_TIME 5
#endif

/***************************************
	**************  SPARC	****************
	***************************************/
#if defined(__sparc__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("addcc %r4,%5,%1\n" \
	"addx %r2,%3,%0" \
	: "=r" ((USItype)(sh)), \
	"=&r" ((USItype)(sl)) \
	: "%rJ" ((USItype)(ah)), \
	"rI" ((USItype)(bh)), \
	"%rJ" ((USItype)(al)), \
	"rI" ((USItype)(bl)) \
	__CLOBBER_CC)
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("subcc %r4,%5,%1\n" \
	"subx %r2,%3,%0" \
	: "=r" ((USItype)(sh)), \
	"=&r" ((USItype)(sl)) \
	: "rJ" ((USItype)(ah)), \
	"rI" ((USItype)(bh)), \
	"rJ" ((USItype)(al)), \
	"rI" ((USItype)(bl)) \
	__CLOBBER_CC)
#if defined(__sparc_v8__)
/* Don't match immediate range because, 1) it is not often useful,
	2) the 'I' flag thinks of the range as a 13 bit signed interval,
	while we want to match a 13 bit interval, sign extended to 32 bits,
	but INTERPRETED AS UNSIGNED.  */
#define umul_ppmm(w1, w0, u, v) \
	__asm__ ("umul %2,%3,%1;rd %%y,%0" \
	: "=r" ((USItype)(w1)), \
	"=r" ((USItype)(w0)) \
	: "r" ((USItype)(u)), \
	"r" ((USItype)(v)))
#define UMUL_TIME 5
#ifndef SUPERSPARC		/* SuperSPARC's udiv only handles 53 bit dividends */
#define udiv_qrnnd(q, r, n1, n0, d) \
do { \
	USItype __q; \
	__asm__ ("mov %1,%%y;nop;nop;nop;udiv %2,%3,%0" \
	: "=r" ((USItype)(__q)) \
	: "r" ((USItype)(n1)), \
	"r" ((USItype)(n0)), \
	"r" ((USItype)(d))); \
	(r) = (n0) - __q * (d); \
	(q) = __q; \
} while (0)
#define UDIV_TIME 25
#endif /* SUPERSPARC */
#else /* ! __sparc_v8__ */
#if defined(__sparclite__)
/* This has hardware multiply but not divide.  It also has two additional
	instructions scan (ffs from high bit) and divscc.  */
#define umul_ppmm(w1, w0, u, v) \
	__asm__ ("umul %2,%3,%1;rd %%y,%0" \
	: "=r" ((USItype)(w1)), \
	"=r" ((USItype)(w0)) \
	: "r" ((USItype)(u)), \
	"r" ((USItype)(v)))
#define UMUL_TIME 5
#define udiv_qrnnd(q, r, n1, n0, d) \
	__asm__ ("! Inlined udiv_qrnnd\n" \
	"wr	%%g0,%2,%%y	! Not a delayed write for sparclite\n" \
	"tst	%%g0\n" \
	"divscc	%3,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%%g1\n" \
	"divscc	%%g1,%4,%0\n" \
	"rd	%%y,%1\n" \
	"bl,a 1f\n" \
	"add	%1,%4,%1\n" \
	"1:	! End of inline udiv_qrnnd" \
	: "=r" ((USItype)(q)), \
	"=r" ((USItype)(r)) \
	: "r" ((USItype)(n1)), \
	"r" ((USItype)(n0)), \
	"rI" ((USItype)(d)) \
	: "%g1" __AND_CLOBBER_CC)
#define UDIV_TIME 37
#endif /* __sparclite__ */
#endif /* __sparc_v8__ */
	/* Default to sparc v7 versions of umul_ppmm and udiv_qrnnd.  */
#ifndef umul_ppmm
#define umul_ppmm(w1, w0, u, v) \
	__asm__ ("! Inlined umul_ppmm\n" \
	"wr	%%g0,%2,%%y	! SPARC has 0-3 delay insn after a wr\n" \
	"sra	%3,31,%%g2	! Don't move this insn\n" \
	"and	%2,%%g2,%%g2	! Don't move this insn\n" \
	"andcc	%%g0,0,%%g1	! Don't move this insn\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,%3,%%g1\n" \
	"mulscc	%%g1,0,%%g1\n" \
	"add	%%g1,%%g2,%0\n" \
	"rd	%%y,%1" \
	: "=r" ((USItype)(w1)), \
	"=r" ((USItype)(w0)) \
	: "%rI" ((USItype)(u)), \
	"r" ((USItype)(v)) \
	: "%g1", "%g2" __AND_CLOBBER_CC)
#define UMUL_TIME 39		/* 39 instructions */
/* It's quite necessary to add this much assembler for the sparc.
   The default udiv_qrnnd (in C) is more than 10 times slower!  */
#define udiv_qrnnd(q, r, n1, n0, d) \
  __asm__ ("! Inlined udiv_qrnnd\n\t"					\
	   "mov	32,%%g1\n\t"						\
	   "subcc	%1,%2,%%g0\n\t"					\
	   "1:	bcs	5f\n\t"						\
	   "addxcc %0,%0,%0	! shift n1n0 and a q-bit in lsb\n\t"	\
	   "sub	%1,%2,%1	! this kills msb of n\n\t"		\
	   "addx	%1,%1,%1	! so this can't give carry\n\t"	\
	   "subcc	%%g1,1,%%g1\n\t"				\
	   "2:	bne	1b\n\t"						\
	   "subcc	%1,%2,%%g0\n\t"					\
	   "bcs	3f\n\t"							\
	   "addxcc %0,%0,%0	! shift n1n0 and a q-bit in lsb\n\t"	\
	   "b		3f\n\t"						\
	   "sub	%1,%2,%1	! this kills msb of n\n\t"		\
	   "4:	sub	%1,%2,%1\n\t"					\
	   "5:	addxcc	%1,%1,%1\n\t"					\
	   "bcc	2b\n\t"							\
	   "subcc	%%g1,1,%%g1\n\t"				\
	   "! Got carry from n.  Subtract next step to cancel this carry.\n\t" \
	   "bne	4b\n\t"							\
	   "addcc	%0,%0,%0	! shift n1n0 and a 0-bit in lsb\n\t" \
	   "sub	%1,%2,%1\n\t"						\
	   "3:	xnor	%0,0,%0\n\t"					\
	   "! End of inline udiv_qrnnd\n"				\
	   : "=&r" ((USItype)(q)),					\
	     "=&r" ((USItype)(r))					\
	   : "r" ((USItype)(d)),					\
	     "1" ((USItype)(n1)),					\
	     "0" ((USItype)(n0)) : "%g1", "cc")
#define UDIV_TIME (3+7*32)      /* 7 instructions/iteration. 32 iterations.  */
#endif
#endif /* __sparc__ */

/***************************************
	**************  VAX  ******************
	***************************************/
#if defined(__vax__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("addl2 %5,%1\n" \
	"adwc %3,%0" \
	: "=g" ((USItype)(sh)), \
	"=&g" ((USItype)(sl)) \
	: "%0" ((USItype)(ah)), \
	"g" ((USItype)(bh)), \
	"%1" ((USItype)(al)), \
	"g" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("subl2 %5,%1\n" \
	"sbwc %3,%0" \
	: "=g" ((USItype)(sh)), \
	"=&g" ((USItype)(sl)) \
	: "0" ((USItype)(ah)), \
	"g" ((USItype)(bh)), \
	"1" ((USItype)(al)), \
	"g" ((USItype)(bl)))
#define umul_ppmm(xh, xl, m0, m1) \
do { \
	union {UDItype __ll; \
	struct {USItype __l, __h; } __i; \
	} __xx; \
	USItype __m0 = (m0), __m1 = (m1); \
	__asm__ ("emul %1,%2,$0,%0" \
	: "=g" (__xx.__ll) \
	: "g" (__m0), \
	"g" (__m1)); \
	(xh) = __xx.__i.__h; (xl) = __xx.__i.__l; \
	(xh) += ((((SItype) __m0 >> 31) & __m1) \
	+ (((SItype) __m1 >> 31) & __m0)); \
} while (0)
#define sdiv_qrnnd(q, r, n1, n0, d) \
do { \
	union {DItype __ll; \
	struct {SItype __l, __h; } __i; \
	} __xx; \
	__xx.__i.__h = n1; __xx.__i.__l = n0; \
	__asm__ ("ediv %3,%2,%0,%1" \
	: "=g" (q), "=g" (r) \
	: "g" (__xx.__ll), "g" (d)); \
} while (0)
#endif /* __vax__ */

/***************************************
	**************  Z8000	****************
	***************************************/
#if defined(__z8000__) && W_TYPE_SIZE == 16
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
	__asm__ ("add %H1,%H5\n\tadc  %H0,%H3" \
	: "=r" ((unsigned int)(sh)), \
	"=&r" ((unsigned int)(sl)) \
	: "%0" ((unsigned int)(ah)), \
	"r" ((unsigned int)(bh)), \
	"%1" ((unsigned int)(al)), \
	"rQR" ((unsigned int)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
	__asm__ ("sub %H1,%H5\n\tsbc  %H0,%H3" \
	: "=r" ((unsigned int)(sh)), \
	"=&r" ((unsigned int)(sl)) \
	: "0" ((unsigned int)(ah)), \
	"r" ((unsigned int)(bh)), \
	"1" ((unsigned int)(al)), \
	"rQR" ((unsigned int)(bl)))
#define umul_ppmm(xh, xl, m0, m1) \
do { \
	union {long int __ll; \
	struct {unsigned int __h, __l; } __i; \
	} __xx; \
	unsigned int __m0 = (m0), __m1 = (m1); \
	__asm__ ("mult      %S0,%H3" \
	: "=r" (__xx.__i.__h), \
	"=r" (__xx.__i.__l) \
	: "%1" (__m0), \
	"rQR" (__m1)); \
	(xh) = __xx.__i.__h; (xl) = __xx.__i.__l; \
	(xh) += ((((signed int) __m0 >> 15) & __m1) \
	+ (((signed int) __m1 >> 15) & __m0)); \
} while (0)
#endif /* __z8000__ */

#endif /* __GNUC__ */

/***************************************
	***********  Generic Versions	********
	***************************************/
#if !defined(umul_ppmm) && defined(__umulsidi3)
#define umul_ppmm(ph, pl, m0, m1) \
{ \
	UDWtype __ll = __umulsidi3(m0, m1); \
	ph = (UWtype) (__ll >> W_TYPE_SIZE); \
	pl = (UWtype) __ll; \
}
#endif

#if !defined(__umulsidi3)
#define __umulsidi3(u, v) \
	({UWtype __hi, __lo; \
	umul_ppmm(__hi, __lo, u, v); \
	((UDWtype) __hi << W_TYPE_SIZE) | __lo; })
#endif

	/* If this machine has no inline assembler, use C macros.  */

#if !defined(add_ssaaaa)
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
do { \
	UWtype __x; \
	__x = (al) + (bl); \
	(sh) = (ah) + (bh) + (__x < (al)); \
	(sl) = __x; \
} while (0)
#endif

#if !defined(sub_ddmmss)
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
do { \
	UWtype __x; \
	__x = (al) - (bl); \
	(sh) = (ah) - (bh) - (__x > (al)); \
	(sl) = __x; \
} while (0)
#endif

#if !defined(umul_ppmm)
#define umul_ppmm(w1, w0, u, v) \
do { \
	UWtype __x0, __x1, __x2, __x3; \
	UHWtype __ul, __vl, __uh, __vh; \
	UWtype __u = (u), __v = (v); \
	\
	__ul = __ll_lowpart(__u); \
	__uh = __ll_highpart(__u); \
	__vl = __ll_lowpart(__v); \
	__vh = __ll_highpart(__v); \
	\
	__x0 = (UWtype) __ul * __vl; \
	__x1 = (UWtype) __ul * __vh; \
	__x2 = (UWtype) __uh * __vl; \
	__x3 = (UWtype) __uh * __vh; \
	\
	__x1 += __ll_highpart(__x0);/* this can't give carry */ \
	__x1 += __x2;		/* but this indeed can */ \
	if (__x1 < __x2)		/* did we get it? */ \
	__x3 += __ll_B;		/* yes, add it in the proper pos. */ \
	\
	(w1) = __x3 + __ll_highpart(__x1); \
	(w0) = (__ll_lowpart(__x1) << W_TYPE_SIZE/2) + __ll_lowpart(__x0); \
} while (0)
#endif

#if !defined(umul_ppmm)
#define smul_ppmm(w1, w0, u, v) \
do { \
	UWtype __w1; \
	UWtype __m0 = (u), __m1 = (v); \
	umul_ppmm(__w1, w0, __m0, __m1); \
	(w1) = __w1 - (-(__m0 >> (W_TYPE_SIZE - 1)) & __m1) \
	- (-(__m1 >> (W_TYPE_SIZE - 1)) & __m0); \
} while (0)
#endif

	/* Define this unconditionally, so it can be used for debugging.  */
#define __udiv_qrnnd_c(q, r, n1, n0, d) \
do { \
	UWtype __d1, __d0, __q1, __q0, __r1, __r0, __m; \
	__d1 = __ll_highpart(d); \
	__d0 = __ll_lowpart(d); \
	\
	__r1 = (n1) % __d1; \
	__q1 = (n1) / __d1; \
	__m = (UWtype) __q1 * __d0; \
	__r1 = __r1 * __ll_B | __ll_highpart(n0); \
	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 * __ll_B | __ll_lowpart(n0); \
	if (__r0 < __m) { \
		__q0--, __r0 += (d); \
		if (__r0 >= (d)) \
			if (__r0 < __m) \
				__q0--, __r0 += (d); \
	} \
	__r0 -= __m; \
	\
	(q) = (UWtype) __q1 * __ll_B | __q0; \
	(r) = __r0; \
} while (0)

/* If the processor has no udiv_qrnnd but sdiv_qrnnd, go through
	__udiv_w_sdiv (defined in libgcc or elsewhere).  */
#if !defined(udiv_qrnnd) && defined(sdiv_qrnnd)
#define udiv_qrnnd(q, r, nh, nl, d) \
do { \
	UWtype __r; \
	(q) = __MPN(udiv_w_sdiv) (&__r, nh, nl, d); \
	(r) = __r; \
} while (0)
#endif

	/* If udiv_qrnnd was not defined for this processor, use __udiv_qrnnd_c.  */
#if !defined(udiv_qrnnd)
#define UDIV_NEEDS_NORMALIZATION 1
#define udiv_qrnnd __udiv_qrnnd_c
#endif

#ifndef UDIV_NEEDS_NORMALIZATION
#define UDIV_NEEDS_NORMALIZATION 0
#endif