glibc/stdlib/longlong.h

/* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
   Copyright (C) 1991-2023 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   In addition to the permissions in the GNU Lesser General Public
   License, the Free Software Foundation gives you unlimited
   permission to link the compiled version of this file into
   combinations with other programs, and to distribute those
   combinations without any restriction coming from the use of this
   file.  (The Lesser General Public License restrictions do apply in
   other respects; for example, they cover modification of the file,
   and distribution when not linked into a combine executable.)

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

/* 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

   UQItype -- Unsigned 8 bit type.
   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))

#ifndef W_TYPE_SIZE
#define W_TYPE_SIZE	32
#define UWtype		USItype
#define UHWtype		USItype
#define UDWtype		UDItype
#endif

/* Used in glibc only.  */
#ifndef attribute_hidden
#define attribute_hidden
#endif

extern const UQItype __clz_tab[256] attribute_hidden;

/* 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 nonzero 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!
   (E.g. WE32100, IBM360.)  */

#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 */

#if defined (__aarch64__)

#if W_TYPE_SIZE == 32
#define count_leading_zeros(COUNT, X)	((COUNT) = __builtin_clz (X))
#define count_trailing_zeros(COUNT, X)   ((COUNT) = __builtin_ctz (X))
#define COUNT_LEADING_ZEROS_0 32
#endif /* W_TYPE_SIZE == 32 */

#if W_TYPE_SIZE == 64
#define count_leading_zeros(COUNT, X)	((COUNT) = __builtin_clzll (X))
#define count_trailing_zeros(COUNT, X)   ((COUNT) = __builtin_ctzll (X))
#define COUNT_LEADING_ZEROS_0 64
#endif /* W_TYPE_SIZE == 64 */

#endif /* __aarch64__ */

#if defined (__alpha) && W_TYPE_SIZE == 64
/* There is a bug in g++ before version 5 that
   errors on __builtin_alpha_umulh.  */
#if !defined(__cplusplus) || __GNUC__ >= 5
#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
#endif /* !c++ */
#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 */
#ifdef __alpha_cix__
#define count_leading_zeros(COUNT,X)	((COUNT) = __builtin_clzl (X))
#define count_trailing_zeros(COUNT,X)	((COUNT) = __builtin_ctzl (X))
#define COUNT_LEADING_ZEROS_0 64
#else
#define count_leading_zeros(COUNT,X) \
  do {									\
    UDItype __xr = (X), __t, __a;					\
    __t = __builtin_alpha_cmpbge (0, __xr);				\
    __a = __clz_tab[__t ^ 0xff] - 1;					\
    __t = __builtin_alpha_extbl (__xr, __a);				\
    (COUNT) = 64 - (__clz_tab[__t] + __a*8);				\
  } while (0)
#define count_trailing_zeros(COUNT,X) \
  do {									\
    UDItype __xr = (X), __t, __a;					\
    __t = __builtin_alpha_cmpbge (0, __xr);				\
    __t = ~__t & -~__t;							\
    __a = ((__t & 0xCC) != 0) * 2;					\
    __a += ((__t & 0xF0) != 0) * 4;					\
    __a += ((__t & 0xAA) != 0);						\
    __t = __builtin_alpha_extbl (__xr, __a);				\
    __a <<= 3;								\
    __t &= -__t;							\
    __a += ((__t & 0xCC) != 0) * 2;					\
    __a += ((__t & 0xF0) != 0) * 4;					\
    __a += ((__t & 0xAA) != 0);						\
    (COUNT) = __a;							\
  } while (0)
#endif /* __alpha_cix__ */
#endif /* __alpha */

#if defined (__arc__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  __asm__ ("add.f	%1, %4, %5\n\tadc	%0, %2, %3"		\
	   : "=r" ((USItype) (sh)),					\
	     "=&r" ((USItype) (sl))					\
	   : "%r" ((USItype) (ah)),					\
	     "rICal" ((USItype) (bh)),					\
	     "%r" ((USItype) (al)),					\
	     "rICal" ((USItype) (bl))					\
	   : "cc")
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
  __asm__ ("sub.f	%1, %4, %5\n\tsbc	%0, %2, %3"		\
	   : "=r" ((USItype) (sh)),					\
	     "=&r" ((USItype) (sl))					\
	   : "r" ((USItype) (ah)),					\
	     "rICal" ((USItype) (bh)),					\
	     "r" ((USItype) (al)),					\
	     "rICal" ((USItype) (bl))					\
	   : "cc")

#define __umulsidi3(u,v) ((UDItype)(USItype)u*(USItype)v)
#ifdef __ARC_NORM__
#define count_leading_zeros(count, x) \
  do									\
    {									\
      SItype c_;							\
									\
      __asm__ ("norm.f\t%0,%1\n\tmov.mi\t%0,-1" : "=r" (c_) : "r" (x) : "cc");\
      (count) = c_ + 1;							\
    }									\
  while (0)
#define COUNT_LEADING_ZEROS_0 32
#endif /* __ARC_NORM__ */
#endif /* __arc__ */

#if defined (__arm__) && (defined (__thumb2__) || !defined (__thumb__)) \
 && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  __asm__ ("adds	%1, %4, %5\n\tadc	%0, %2, %3"		\
	   : "=r" ((USItype) (sh)),					\
	     "=&r" ((USItype) (sl))					\
	   : "%r" ((USItype) (ah)),					\
	     "rI" ((USItype) (bh)),					\
	     "%r" ((USItype) (al)),					\
	     "rI" ((USItype) (bl)) __CLOBBER_CC)
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
  __asm__ ("subs	%1, %4, %5\n\tsbc	%0, %2, %3"		\
	   : "=r" ((USItype) (sh)),					\
	     "=&r" ((USItype) (sl))					\
	   : "r" ((USItype) (ah)),					\
	     "rI" ((USItype) (bh)),					\
	     "r" ((USItype) (al)),					\
	     "rI" ((USItype) (bl)) __CLOBBER_CC)
# if defined(__ARM_ARCH_2__) || defined(__ARM_ARCH_2A__) \
     || defined(__ARM_ARCH_3__)
#  define umul_ppmm(xh, xl, a, b)					\
  do {									\
    register USItype __t0, __t1, __t2;					\
    __asm__ ("%@ Inlined umul_ppmm\n"					\
	   "	mov	%2, %5, lsr #16\n"				\
	   "	mov	%0, %6, lsr #16\n"				\
	   "	bic	%3, %5, %2, lsl #16\n"				\
	   "	bic	%4, %6, %0, lsl #16\n"				\
	   "	mul	%1, %3, %4\n"					\
	   "	mul	%4, %2, %4\n"					\
	   "	mul	%3, %0, %3\n"					\
	   "	mul	%0, %2, %0\n"					\
	   "	adds	%3, %4, %3\n"					\
	   "	addcs	%0, %0, #65536\n"				\
	   "	adds	%1, %1, %3, lsl #16\n"				\
	   "	adc	%0, %0, %3, lsr #16"				\
	   : "=&r" ((USItype) (xh)),					\
	     "=r" ((USItype) (xl)),					\
	     "=&r" (__t0), "=&r" (__t1), "=r" (__t2)			\
	   : "r" ((USItype) (a)),					\
	     "r" ((USItype) (b)) __CLOBBER_CC );			\
  } while (0)
#  define UMUL_TIME 20
# else
#  define umul_ppmm(xh, xl, a, b)					\
  do {									\
    /* Generate umull, under compiler control.  */			\
    register UDItype __t0 = (UDItype)(USItype)(a) * (USItype)(b);	\
    (xl) = (USItype)__t0;						\
    (xh) = (USItype)(__t0 >> 32);					\
  } while (0)
#  define UMUL_TIME 3
# endif
# define UDIV_TIME 100
#endif /* __arm__ */

#if defined(__arm__)
/* Let gcc decide how best to implement count_leading_zeros.  */
#define count_leading_zeros(COUNT,X)	((COUNT) = __builtin_clz (X))
#define count_trailing_zeros(COUNT,X)   ((COUNT) = __builtin_ctz (X))
#define COUNT_LEADING_ZEROS_0 32
#endif

#if defined (__AVR__)

#if W_TYPE_SIZE == 16
#define count_leading_zeros(COUNT,X)  ((COUNT) = __builtin_clz (X))
#define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctz (X))
#define COUNT_LEADING_ZEROS_0 16
#endif /* W_TYPE_SIZE == 16 */

#if W_TYPE_SIZE == 32
#define count_leading_zeros(COUNT,X)  ((COUNT) = __builtin_clzl (X))
#define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctzl (X))
#define COUNT_LEADING_ZEROS_0 32
#endif /* W_TYPE_SIZE == 32 */

#if W_TYPE_SIZE == 64
#define count_leading_zeros(COUNT,X)  ((COUNT) = __builtin_clzll (X))
#define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctzll (X))
#define COUNT_LEADING_ZEROS_0 64
#endif /* W_TYPE_SIZE == 64 */

#endif /* defined (__AVR__) */

#if defined (__CRIS__)

#if __CRIS_arch_version >= 3
#define count_leading_zeros(COUNT, X) ((COUNT) = __builtin_clz (X))
#define COUNT_LEADING_ZEROS_0 32
#endif /* __CRIS_arch_version >= 3 */

#if __CRIS_arch_version >= 8
#define count_trailing_zeros(COUNT, X) ((COUNT) = __builtin_ctz (X))
#endif /* __CRIS_arch_version >= 8 */

#if __CRIS_arch_version >= 10
#define __umulsidi3(u,v) ((UDItype)(USItype) (u) * (UDItype)(USItype) (v))
#else
#define __umulsidi3 __umulsidi3
extern UDItype __umulsidi3 (USItype, USItype);
#endif /* __CRIS_arch_version >= 10 */

#define umul_ppmm(w1, w0, u, v)		\
  do {					\
    UDItype __x = __umulsidi3 (u, v);	\
    (w0) = (USItype) (__x);		\
    (w1) = (USItype) (__x >> 32);	\
  } while (0)

/* FIXME: defining add_ssaaaa and sub_ddmmss should be advantageous for
   DFmode ("double" intrinsics, avoiding two of the three insns handling
   carry), but defining them as open-code C composing and doing the
   operation in DImode (UDImode) shows that the DImode needs work:
   register pressure from requiring neighboring registers and the
   traffic to and from them come to dominate, in the 4.7 series.  */

#endif /* defined (__CRIS__) */

#if defined (__hppa) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  __asm__ ("add %4,%5,%1\n\taddc %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\tsubb %2,%3,%0"				\
	   : "=r" ((USItype) (sh)),					\
	     "=&r" ((USItype) (sl))					\
	   : "rM" ((USItype) (ah)),					\
	     "rM" ((USItype) (bh)),					\
	     "rM" ((USItype) (al)),					\
	     "rM" ((USItype) (bl)))
#if defined (_PA_RISC1_1)
#define umul_ppmm(w1, w0, u, v) \
  do {									\
    union								\
      {									\
	UDItype __f;							\
	struct {USItype __w1, __w0;} __w1w0;				\
      } __t;								\
    __asm__ ("xmpyu %1,%2,%0"						\
	     : "=x" (__t.__f)						\
	     : "x" ((USItype) (u)),					\
	       "x" ((USItype) (v)));					\
    (w1) = __t.__w1w0.__w1;						\
    (w0) = __t.__w1w0.__w0;						\
     } while (0)
#define UMUL_TIME 8
#else
#define UMUL_TIME 30
#endif
#define UDIV_TIME 40
#define count_leading_zeros(count, x) \
  do {									\
    USItype __tmp;							\
    __asm__ (								\
       "ldi		1,%0\n"						\
"	extru,=		%1,15,16,%%r0		; Bits 31..16 zero?\n"	\
"	extru,tr	%1,15,16,%1		; No.  Shift down, skip add.\n"\
"	ldo		16(%0),%0		; Yes.  Perform add.\n"	\
"	extru,=		%1,23,8,%%r0		; Bits 15..8 zero?\n"	\
"	extru,tr	%1,23,8,%1		; No.  Shift down, skip add.\n"\
"	ldo		8(%0),%0		; Yes.  Perform add.\n"	\
"	extru,=		%1,27,4,%%r0		; Bits 7..4 zero?\n"	\
"	extru,tr	%1,27,4,%1		; No.  Shift down, skip add.\n"\
"	ldo		4(%0),%0		; Yes.  Perform add.\n"	\
"	extru,=		%1,29,2,%%r0		; Bits 3..2 zero?\n"	\
"	extru,tr	%1,29,2,%1		; No.  Shift down, skip add.\n"\
"	ldo		2(%0),%0		; Yes.  Perform add.\n"	\
"	extru		%1,30,1,%1		; Extract bit 1.\n"	\
"	sub		%0,%1,%0		; Subtract it.\n"	\
	: "=r" (count), "=r" (__tmp) : "1" (x));			\
  } while (0)
#endif

#if (defined (__i370__) || defined (__s390__) || defined (__mvs__)) && W_TYPE_SIZE == 32
#if !defined (__zarch__)
#define smul_ppmm(xh, xl, m0, m1) \
  do {									\
    union {DItype __ll;							\
	   struct {USItype __h, __l;} __i;				\
	  } __x;							\
    __asm__ ("lr %N0,%1\n\tmr %0,%2"					\
	     : "=&r" (__x.__ll)						\
	     : "r" (m0), "r" (m1));					\
    (xh) = __x.__i.__h; (xl) = __x.__i.__l;				\
  } while (0)
#define sdiv_qrnnd(q, r, n1, n0, d) \
  do {									\
    union {DItype __ll;							\
	   struct {USItype __h, __l;} __i;				\
	  } __x;							\
    __x.__i.__h = n1; __x.__i.__l = n0;					\
    __asm__ ("dr %0,%2"							\
	     : "=r" (__x.__ll)						\
	     : "0" (__x.__ll), "r" (d));				\
    (q) = __x.__i.__l; (r) = __x.__i.__h;				\
  } while (0)
#else
#define smul_ppmm(xh, xl, m0, m1) \
  do {                                                                  \
    register SItype __r0 __asm__ ("0");					\
    register SItype __r1 __asm__ ("1") = (m0);				\
									\
    __asm__ ("mr\t%%r0,%3"                                              \
	     : "=r" (__r0), "=r" (__r1)					\
	     : "r"  (__r1),  "r" (m1));					\
    (xh) = __r0; (xl) = __r1;						\
  } while (0)

#define sdiv_qrnnd(q, r, n1, n0, d) \
  do {									\
    register SItype __r0 __asm__ ("0") = (n1);				\
    register SItype __r1 __asm__ ("1") = (n0);				\
									\
    __asm__ ("dr\t%%r0,%4"                                              \
	     : "=r" (__r0), "=r" (__r1)					\
	     : "r" (__r0), "r" (__r1), "r" (d));			\
    (q) = __r1; (r) = __r0;						\
  } while (0)
#endif /* __zarch__ */
#endif

#if (defined (__i386__) || defined (__i486__)) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  __asm__ ("add{l} {%5,%1|%1,%5}\n\tadc{l} {%3,%0|%0,%3}"		\
	   : "=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__ ("sub{l} {%5,%1|%1,%5}\n\tsbb{l} {%3,%0|%0,%3}"		\
	   : "=r" ((USItype) (sh)),					\
	     "=&r" ((USItype) (sl))					\
	   : "0" ((USItype) (ah)),					\
	     "g" ((USItype) (bh)),					\
	     "1" ((USItype) (al)),					\
	     "g" ((USItype) (bl)))
#define umul_ppmm(w1, w0, u, v) \
  __asm__ ("mul{l} %3"							\
	   : "=a" ((USItype) (w0)),					\
	     "=d" ((USItype) (w1))					\
	   : "%0" ((USItype) (u)),					\
	     "rm" ((USItype) (v)))
#define udiv_qrnnd(q, r, n1, n0, dv) \
  __asm__ ("div{l} %4"							\
	   : "=a" ((USItype) (q)),					\
	     "=d" ((USItype) (r))					\
	   : "0" ((USItype) (n0)),					\
	     "1" ((USItype) (n1)),					\
	     "rm" ((USItype) (dv)))
#define count_leading_zeros(count, x)	((count) = __builtin_clz (x))
#define count_trailing_zeros(count, x)	((count) = __builtin_ctz (x))
#define UMUL_TIME 40
#define UDIV_TIME 40
#endif /* 80x86 */

#if defined (__x86_64__) && W_TYPE_SIZE == 64
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  __asm__ ("add{q} {%5,%1|%1,%5}\n\tadc{q} {%3,%0|%0,%3}"		\
	   : "=r" ((UDItype) (sh)),					\
	     "=&r" ((UDItype) (sl))					\
	   : "%0" ((UDItype) (ah)),					\
	     "rme" ((UDItype) (bh)),					\
	     "%1" ((UDItype) (al)),					\
	     "rme" ((UDItype) (bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
  __asm__ ("sub{q} {%5,%1|%1,%5}\n\tsbb{q} {%3,%0|%0,%3}"		\
	   : "=r" ((UDItype) (sh)),					\
	     "=&r" ((UDItype) (sl))					\
	   : "0" ((UDItype) (ah)),					\
	     "rme" ((UDItype) (bh)),					\
	     "1" ((UDItype) (al)),					\
	     "rme" ((UDItype) (bl)))
#define umul_ppmm(w1, w0, u, v) \
  __asm__ ("mul{q} %3"							\
	   : "=a" ((UDItype) (w0)),					\
	     "=d" ((UDItype) (w1))					\
	   : "%0" ((UDItype) (u)),					\
	     "rm" ((UDItype) (v)))
#define udiv_qrnnd(q, r, n1, n0, dv) \
  __asm__ ("div{q} %4"							\
	   : "=a" ((UDItype) (q)),					\
	     "=d" ((UDItype) (r))					\
	   : "0" ((UDItype) (n0)),					\
	     "1" ((UDItype) (n1)),					\
	     "rm" ((UDItype) (dv)))
#define count_leading_zeros(count, x)	((count) = __builtin_clzll (x))
#define count_trailing_zeros(count, x)	((count) = __builtin_ctzll (x))
#define UMUL_TIME 40
#define UDIV_TIME 40
#endif /* x86_64 */

#if defined (__i960__) && W_TYPE_SIZE == 32
#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; })
#endif /* __i960__ */

#if defined (__ia64) && W_TYPE_SIZE == 64
/* This form encourages gcc (pre-release 3.4 at least) to emit predicated
   "sub r=r,r" and "sub r=r,r,1", giving a 2 cycle latency.  The generic
   code using "al<bl" arithmetically comes out making an actual 0 or 1 in a
   register, which takes an extra cycle.  */
#define sub_ddmmss(sh, sl, ah, al, bh, bl)				\
  do {									\
    UWtype __x;								\
    __x = (al) - (bl);							\
    if ((al) < (bl))							\
      (sh) = (ah) - (bh) - 1;						\
    else								\
      (sh) = (ah) - (bh);						\
    (sl) = __x;								\
  } while (0)

/* Do both product parts in assembly, since that gives better code with
   all gcc versions.  Some callers will just use the upper part, and in
   that situation we waste an instruction, but not any cycles.  */
#define umul_ppmm(ph, pl, m0, m1)					\
  __asm__ ("xma.hu %0 = %2, %3, f0\n\txma.l %1 = %2, %3, f0"		\
	   : "=&f" (ph), "=f" (pl)					\
	   : "f" (m0), "f" (m1))
#define count_leading_zeros(count, x)					\
  do {									\
    UWtype _x = (x), _y, _a, _c;					\
    __asm__ ("mux1 %0 = %1, @rev" : "=r" (_y) : "r" (_x));		\
    __asm__ ("czx1.l %0 = %1" : "=r" (_a) : "r" (-_y | _y));		\
    _c = (_a - 1) << 3;							\
    _x >>= _c;								\
    if (_x >= 1 << 4)							\
      _x >>= 4, _c += 4;						\
    if (_x >= 1 << 2)							\
      _x >>= 2, _c += 2;						\
    _c += _x >> 1;							\
    (count) =  W_TYPE_SIZE - 1 - _c;					\
  } while (0)
/* similar to what gcc does for __builtin_ffs, but 0 based rather than 1
   based, and we don't need a special case for x==0 here */
#define count_trailing_zeros(count, x)					\
  do {									\
    UWtype __ctz_x = (x);						\
    __asm__ ("popcnt %0 = %1"						\
	     : "=r" (count)						\
	     : "r" ((__ctz_x-1) & ~__ctz_x));				\
  } while (0)
#define UMUL_TIME 14
#endif

#ifdef __loongarch__
# if W_TYPE_SIZE == 32
#  define count_leading_zeros(count, x)  ((count) = __builtin_clz (x))
#  define count_trailing_zeros(count, x) ((count) = __builtin_ctz (x))
#  define COUNT_LEADING_ZEROS_0 32
# elif W_TYPE_SIZE == 64
#  define count_leading_zeros(count, x)  ((count) = __builtin_clzll (x))
#  define count_trailing_zeros(count, x) ((count) = __builtin_ctzll (x))
#  define COUNT_LEADING_ZEROS_0 64
# endif
#endif

#if defined (__M32R__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  /* The cmp clears the condition bit.  */ \
  __asm__ ("cmp %0,%0\n\taddx %1,%5\n\taddx %0,%3"			\
	   : "=r" ((USItype) (sh)),					\
	     "=&r" ((USItype) (sl))					\
	   : "0" ((USItype) (ah)),					\
	     "r" ((USItype) (bh)),					\
	     "1" ((USItype) (al)),					\
	     "r" ((USItype) (bl))					\
	   : "cbit")
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
  /* The cmp clears the condition bit.  */ \
  __asm__ ("cmp %0,%0\n\tsubx %1,%5\n\tsubx %0,%3"			\
	   : "=r" ((USItype) (sh)),					\
	     "=&r" ((USItype) (sl))					\
	   : "0" ((USItype) (ah)),					\
	     "r" ((USItype) (bh)),					\
	     "1" ((USItype) (al)),					\
	     "r" ((USItype) (bl))					\
	   : "cbit")
#endif /* __M32R__ */

#if defined (__mc68000__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  __asm__ ("add%.l %5,%1\n\taddx%.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\tsubx%.l %3,%0"				\
	   : "=d" ((USItype) (sh)),					\
	     "=&d" ((USItype) (sl))					\
	   : "0" ((USItype) (ah)),					\
	     "d" ((USItype) (bh)),					\
	     "1" ((USItype) (al)),					\
	     "g" ((USItype) (bl)))

/* The '020, '030, '040, '060 and CPU32 have 32x32->64 and 64/32->32q-32r.  */
#if (defined (__mc68020__) && !defined (__mc68060__))
#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)))

#elif defined (__mcoldfire__) /* not mc68020 */

#define umul_ppmm(xh, xl, a, b) \
  __asm__ ("| Inlined umul_ppmm\n"					\
	   "	move%.l	%2,%/d0\n"					\
	   "	move%.l	%3,%/d1\n"					\
	   "	move%.l	%/d0,%/d2\n"					\
	   "	swap	%/d0\n"						\
	   "	move%.l	%/d1,%/d3\n"					\
	   "	swap	%/d1\n"						\
	   "	move%.w	%/d2,%/d4\n"					\
	   "	mulu	%/d3,%/d4\n"					\
	   "	mulu	%/d1,%/d2\n"					\
	   "	mulu	%/d0,%/d3\n"					\
	   "	mulu	%/d0,%/d1\n"					\
	   "	move%.l	%/d4,%/d0\n"					\
	   "	clr%.w	%/d0\n"						\
	   "	swap	%/d0\n"						\
	   "	add%.l	%/d0,%/d2\n"					\
	   "	add%.l	%/d3,%/d2\n"					\
	   "	jcc	1f\n"						\
	   "	add%.l	%#65536,%/d1\n"					\
	   "1:	swap	%/d2\n"						\
	   "	moveq	%#0,%/d0\n"					\
	   "	move%.w	%/d2,%/d0\n"					\
	   "	move%.w	%/d4,%/d2\n"					\
	   "	move%.l	%/d2,%1\n"					\
	   "	add%.l	%/d1,%/d0\n"					\
	   "	move%.l	%/d0,%0"					\
	   : "=g" ((USItype) (xh)),					\
	     "=g" ((USItype) (xl))					\
	   : "g" ((USItype) (a)),					\
	     "g" ((USItype) (b))					\
	   : "d0", "d1", "d2", "d3", "d4")
#define UMUL_TIME 100
#define UDIV_TIME 400
#else /* not ColdFire */
/* %/ inserts REGISTER_PREFIX, %# inserts IMMEDIATE_PREFIX.  */
#define umul_ppmm(xh, xl, a, b) \
  __asm__ ("| Inlined umul_ppmm\n"					\
	   "	move%.l	%2,%/d0\n"					\
	   "	move%.l	%3,%/d1\n"					\
	   "	move%.l	%/d0,%/d2\n"					\
	   "	swap	%/d0\n"						\
	   "	move%.l	%/d1,%/d3\n"					\
	   "	swap	%/d1\n"						\
	   "	move%.w	%/d2,%/d4\n"					\
	   "	mulu	%/d3,%/d4\n"					\
	   "	mulu	%/d1,%/d2\n"					\
	   "	mulu	%/d0,%/d3\n"					\
	   "	mulu	%/d0,%/d1\n"					\
	   "	move%.l	%/d4,%/d0\n"					\
	   "	eor%.w	%/d0,%/d0\n"					\
	   "	swap	%/d0\n"						\
	   "	add%.l	%/d0,%/d2\n"					\
	   "	add%.l	%/d3,%/d2\n"					\
	   "	jcc	1f\n"						\
	   "	add%.l	%#65536,%/d1\n"					\
	   "1:	swap	%/d2\n"						\
	   "	moveq	%#0,%/d0\n"					\
	   "	move%.w	%/d2,%/d0\n"					\
	   "	move%.w	%/d4,%/d2\n"					\
	   "	move%.l	%/d2,%1\n"					\
	   "	add%.l	%/d1,%/d0\n"					\
	   "	move%.l	%/d0,%0"					\
	   : "=g" ((USItype) (xh)),					\
	     "=g" ((USItype) (xl))					\
	   : "g" ((USItype) (a)),					\
	     "g" ((USItype) (b))					\
	   : "d0", "d1", "d2", "d3", "d4")
#define UMUL_TIME 100
#define UDIV_TIME 400

#endif /* not mc68020 */

/* The '020, '030, '040 and '060 have bitfield insns.
   cpu32 disguises as a 68020, but lacks them.  */
#if defined (__mc68020__) && !defined (__mcpu32__)
#define count_leading_zeros(count, x) \
  __asm__ ("bfffo %1{%b2:%b2},%0"					\
	   : "=d" ((USItype) (count))					\
	   : "od" ((USItype) (x)), "n" (0))
/* Some ColdFire architectures have a ff1 instruction supported via
   __builtin_clz. */
#elif defined (__mcfisaaplus__) || defined (__mcfisac__)
#define count_leading_zeros(count,x) ((count) = __builtin_clz (x))
#define COUNT_LEADING_ZEROS_0 32
#endif
#endif /* mc68000 */

#if defined (__m88000__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  __asm__ ("addu.co %1,%r4,%r5\n\taddu.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\tsubu.ci %0,%r2,%r3"			\
	   : "=r" ((USItype) (sh)),					\
	     "=&r" ((USItype) (sl))					\
	   : "rJ" ((USItype) (ah)),					\
	     "rJ" ((USItype) (bh)),					\
	     "rJ" ((USItype) (al)),					\
	     "rJ" ((USItype) (bl)))
#define count_leading_zeros(count, x) \
  do {									\
    USItype __cbtmp;							\
    __asm__ ("ff1 %0,%1"						\
	     : "=r" (__cbtmp)						\
	     : "r" ((USItype) (x)));					\
    (count) = __cbtmp ^ 31;						\
  } while (0)
#define COUNT_LEADING_ZEROS_0 63 /* sic */
#if defined (__mc88110__)
#define umul_ppmm(wh, wl, u, v) \
  do {									\
    union {UDItype __ll;						\
	   struct {USItype __h, __l;} __i;				\
	  } __xx;							\
    __asm__ ("mulu.d	%0,%1,%2"					\
	     : "=r" (__xx.__ll)						\
	     : "r" ((USItype) (u)),					\
	       "r" ((USItype) (v)));					\
    (wh) = __xx.__i.__h;						\
    (wl) = __xx.__i.__l;						\
  } while (0)
#define udiv_qrnnd(q, r, n1, n0, d) \
  ({union {UDItype __ll;						\
	   struct {USItype __h, __l;} __i;				\
	  } __xx;							\
  USItype __q;								\
  __xx.__i.__h = (n1); __xx.__i.__l = (n0);				\
  __asm__ ("divu.d %0,%1,%2"						\
	   : "=r" (__q)							\
	   : "r" (__xx.__ll),						\
	     "r" ((USItype) (d)));					\
  (r) = (n0) - __q * (d); (q) = __q; })
#define UMUL_TIME 5
#define UDIV_TIME 25
#else
#define UMUL_TIME 17
#define UDIV_TIME 150
#endif /* __mc88110__ */
#endif /* __m88000__ */

#if defined (__mn10300__)
# if defined (__AM33__)
#  define count_leading_zeros(COUNT,X)	((COUNT) = __builtin_clz (X))
#  define umul_ppmm(w1, w0, u, v)		\
    asm("mulu %3,%2,%1,%0" : "=r"(w0), "=r"(w1) : "r"(u), "r"(v))
#  define smul_ppmm(w1, w0, u, v)		\
    asm("mul %3,%2,%1,%0" : "=r"(w0), "=r"(w1) : "r"(u), "r"(v))
# else
#  define umul_ppmm(w1, w0, u, v)		\
    asm("nop; nop; mulu %3,%0" : "=d"(w0), "=z"(w1) : "%0"(u), "d"(v))
#  define smul_ppmm(w1, w0, u, v)		\
    asm("nop; nop; mul %3,%0" : "=d"(w0), "=z"(w1) : "%0"(u), "d"(v))
# endif
# define add_ssaaaa(sh, sl, ah, al, bh, bl)	\
  do {						\
    DWunion __s, __a, __b;			\
    __a.s.low = (al); __a.s.high = (ah);	\
    __b.s.low = (bl); __b.s.high = (bh);	\
    __s.ll = __a.ll + __b.ll;			\
    (sl) = __s.s.low; (sh) = __s.s.high;	\
  } while (0)
# define sub_ddmmss(sh, sl, ah, al, bh, bl)	\
  do {						\
    DWunion __s, __a, __b;			\
    __a.s.low = (al); __a.s.high = (ah);	\
    __b.s.low = (bl); __b.s.high = (bh);	\
    __s.ll = __a.ll - __b.ll;			\
    (sl) = __s.s.low; (sh) = __s.s.high;	\
  } while (0)
# define udiv_qrnnd(q, r, nh, nl, d)		\
  asm("divu %2,%0" : "=D"(q), "=z"(r) : "D"(d), "0"(nl), "1"(nh))
# define sdiv_qrnnd(q, r, nh, nl, d)		\
  asm("div %2,%0" : "=D"(q), "=z"(r) : "D"(d), "0"(nl), "1"(nh))
# define UMUL_TIME 3
# define UDIV_TIME 38
#endif

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

#if (__mips == 32 || __mips == 64) && ! defined (__mips16)
#define count_leading_zeros(COUNT,X)	((COUNT) = __builtin_clz (X))
#define COUNT_LEADING_ZEROS_0 32
#endif
#endif /* __mips__ */

/* FIXME: We should test _IBMR2 here when we add assembly support for the
   system vendor compilers.
   FIXME: What's needed for gcc PowerPC VxWorks?  __vxworks__ is not good
   enough, since that hits ARM and m68k too.  */
#if (defined (_ARCH_PPC)	/* AIX */				\
     || defined (__powerpc__)	/* gcc */				\
     || defined (__POWERPC__)	/* BEOS */				\
     || defined (__ppc__)	/* Darwin */				\
     || (defined (PPC) && ! defined (CPU_FAMILY)) /* gcc 2.7.x GNU&SysV */    \
     || (defined (PPC) && defined (CPU_FAMILY)    /* VxWorks */               \
	 && CPU_FAMILY == PPC)                                                \
     ) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  do {									\
    if (__builtin_constant_p (bh) && (bh) == 0)				\
      __asm__ ("add%I4c %1,%3,%4\n\taddze %0,%2"		\
	     : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
    else if (__builtin_constant_p (bh) && (bh) == ~(USItype) 0)		\
      __asm__ ("add%I4c %1,%3,%4\n\taddme %0,%2"		\
	     : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
    else								\
      __asm__ ("add%I5c %1,%4,%5\n\tadde %0,%2,%3"		\
	     : "=r" (sh), "=&r" (sl)					\
	     : "%r" (ah), "r" (bh), "%r" (al), "rI" (bl));		\
  } while (0)
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
  do {									\
    if (__builtin_constant_p (ah) && (ah) == 0)				\
      __asm__ ("subf%I3c %1,%4,%3\n\tsubfze %0,%2"	\
	       : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
    else if (__builtin_constant_p (ah) && (ah) == ~(USItype) 0)		\
      __asm__ ("subf%I3c %1,%4,%3\n\tsubfme %0,%2"	\
	       : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
    else if (__builtin_constant_p (bh) && (bh) == 0)			\
      __asm__ ("subf%I3c %1,%4,%3\n\taddme %0,%2"		\
	       : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
    else if (__builtin_constant_p (bh) && (bh) == ~(USItype) 0)		\
      __asm__ ("subf%I3c %1,%4,%3\n\taddze %0,%2"		\
	       : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
    else								\
      __asm__ ("subf%I4c %1,%5,%4\n\tsubfe %0,%3,%2"	\
	       : "=r" (sh), "=&r" (sl)					\
	       : "r" (ah), "r" (bh), "rI" (al), "r" (bl));		\
  } while (0)
#define count_leading_zeros(count, x) \
  __asm__ ("cntlzw %0,%1" : "=r" (count) : "r" (x))
#define COUNT_LEADING_ZEROS_0 32
#if defined (_ARCH_PPC) || defined (__powerpc__) || defined (__POWERPC__) \
  || defined (__ppc__)                                                    \
  || (defined (PPC) && ! defined (CPU_FAMILY)) /* gcc 2.7.x GNU&SysV */       \
  || (defined (PPC) && defined (CPU_FAMILY)    /* VxWorks */                  \
	 && CPU_FAMILY == 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" (ph) : "%r" (m0), "r" (m1));	\
    (pl) = __m0 * __m1;							\
  } while (0)
#define SMUL_TIME 14
#define UDIV_TIME 120
#endif
#endif /* 32-bit POWER architecture variants.  */

/* We should test _IBMR2 here when we add assembly support for the system
   vendor compilers.  */
#if (defined (_ARCH_PPC64) || defined (__powerpc64__)) && W_TYPE_SIZE == 64
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  do {									\
    if (__builtin_constant_p (bh) && (bh) == 0)				\
      __asm__ ("add%I4c %1,%3,%4\n\taddze %0,%2"		\
	     : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
    else if (__builtin_constant_p (bh) && (bh) == ~(UDItype) 0)		\
      __asm__ ("add%I4c %1,%3,%4\n\taddme %0,%2"		\
	     : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\
    else								\
      __asm__ ("add%I5c %1,%4,%5\n\tadde %0,%2,%3"		\
	     : "=r" (sh), "=&r" (sl)					\
	     : "%r" (ah), "r" (bh), "%r" (al), "rI" (bl));		\
  } while (0)
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
  do {									\
    if (__builtin_constant_p (ah) && (ah) == 0)				\
      __asm__ ("subf%I3c %1,%4,%3\n\tsubfze %0,%2"	\
	       : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
    else if (__builtin_constant_p (ah) && (ah) == ~(UDItype) 0)		\
      __asm__ ("subf%I3c %1,%4,%3\n\tsubfme %0,%2"	\
	       : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\
    else if (__builtin_constant_p (bh) && (bh) == 0)			\
      __asm__ ("subf%I3c %1,%4,%3\n\taddme %0,%2"		\
	       : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
    else if (__builtin_constant_p (bh) && (bh) == ~(UDItype) 0)		\
      __asm__ ("subf%I3c %1,%4,%3\n\taddze %0,%2"		\
	       : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\
    else								\
      __asm__ ("subf%I4c %1,%5,%4\n\tsubfe %0,%3,%2"	\
	       : "=r" (sh), "=&r" (sl)					\
	       : "r" (ah), "r" (bh), "rI" (al), "r" (bl));		\
  } while (0)
#define count_leading_zeros(count, x) \
  __asm__ ("cntlzd %0,%1" : "=r" (count) : "r" (x))
#define COUNT_LEADING_ZEROS_0 64
#define umul_ppmm(ph, pl, m0, m1) \
  do {									\
    UDItype __m0 = (m0), __m1 = (m1);					\
    __asm__ ("mulhdu %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 {									\
    DItype __m0 = (m0), __m1 = (m1);					\
    __asm__ ("mulhd %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1));	\
    (pl) = __m0 * __m1;							\
  } while (0)
#define SMUL_TIME 14  /* ??? */
#define UDIV_TIME 120 /* ??? */
#endif /* 64-bit PowerPC.  */

#if defined (__ibm032__) /* RT/ROMP */ && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  __asm__ ("a %1,%5\n\tae %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\tse %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
#define count_leading_zeros(count, x) \
  do {									\
    if ((x) >= 0x10000)							\
      __asm__ ("clz	%0,%1"						\
	       : "=r" ((USItype) (count))				\
	       : "r" ((USItype) (x) >> 16));				\
    else								\
      {									\
	__asm__ ("clz	%0,%1"						\
		 : "=r" ((USItype) (count))				\
		 : "r" ((USItype) (x)));					\
	(count) += 16;							\
      }									\
  } while (0)
#endif

#if defined(__riscv)
#ifdef __riscv_mul
#define __umulsidi3(u,v) ((UDWtype)(UWtype)(u) * (UWtype)(v))
#define __muluw3(a, b) ((UWtype)(a) * (UWtype)(b))
#else
#if __riscv_xlen == 32
  #define MULUW3 "call __mulsi3"
#elif __riscv_xlen == 64
  #define MULUW3 "call __muldi3"
#else
#error unsupported xlen
#endif /* __riscv_xlen */
/* We rely on the fact that MULUW3 doesn't clobber the t-registers.
   It can get better register allocation result.  */
#define __muluw3(a, b) \
  ({ \
    register UWtype __op0 asm ("a0") = a; \
    register UWtype __op1 asm ("a1") = b; \
    asm volatile (MULUW3 \
                  : "+r" (__op0), "+r" (__op1) \
                  : \
                  : "ra", "a2", "a3"); \
    __op0; \
  })
#endif /* __riscv_mul */
#define umul_ppmm(w1, w0, u, v) \
  do { \
    UWtype __x0, __x1, __x2, __x3; \
    UHWtype __ul, __vl, __uh, __vh; \
 \
    __ul = __ll_lowpart (u); \
    __uh = __ll_highpart (u); \
    __vl = __ll_lowpart (v); \
    __vh = __ll_highpart (v); \
 \
    __x0 = __muluw3 (__ul, __vl); \
    __x1 = __muluw3 (__ul, __vh); \
    __x2 = __muluw3 (__uh, __vl); \
    __x3 = __muluw3 (__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) * __ll_B + __ll_lowpart (__x0); \
  } while (0)
#endif /* __riscv */

#if defined(__sh__) && W_TYPE_SIZE == 32
#ifndef __sh1__
#define umul_ppmm(w1, w0, u, v) \
  __asm__ (								\
       "dmulu.l	%2,%3\n\tsts%M1	macl,%1\n\tsts%M0	mach,%0"	\
	   : "=r<" ((USItype)(w1)),					\
	     "=r<" ((USItype)(w0))					\
	   : "r" ((USItype)(u)),					\
	     "r" ((USItype)(v))						\
	   : "macl", "mach")
#define UMUL_TIME 5
#endif

/* This is the same algorithm as __udiv_qrnnd_c.  */
#define UDIV_NEEDS_NORMALIZATION 1

#ifdef __FDPIC__
/* FDPIC needs a special version of the asm fragment to extract the
   code address from the function descriptor. __udiv_qrnnd_16 is
   assumed to be local and not to use the GOT, so loading r12 is
   not needed. */
#define udiv_qrnnd(q, r, n1, n0, d) \
  do {									\
    extern UWtype __udiv_qrnnd_16 (UWtype, UWtype)			\
			__attribute__ ((visibility ("hidden")));	\
    /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */	\
    __asm__ (								\
	"mov%M4	%4,r5\n"						\
"	swap.w	%3,r4\n"						\
"	swap.w	r5,r6\n"						\
"	mov.l	@%5,r2\n"						\
"	jsr	@r2\n"							\
"	shll16	r6\n"							\
"	swap.w	r4,r4\n"						\
"	mov.l	@%5,r2\n"						\
"	jsr	@r2\n"							\
"	swap.w	r1,%0\n"						\
"	or	r1,%0"							\
	: "=r" (q), "=&z" (r)						\
	: "1" (n1), "r" (n0), "rm" (d), "r" (&__udiv_qrnnd_16)		\
	: "r1", "r2", "r4", "r5", "r6", "pr", "t");			\
  } while (0)
#else
#define udiv_qrnnd(q, r, n1, n0, d) \
  do {									\
    extern UWtype __udiv_qrnnd_16 (UWtype, UWtype)			\
			__attribute__ ((visibility ("hidden")));	\
    /* r0: rn r1: qn */ /* r0: n1 r4: n0 r5: d r6: d1 */ /* r2: __m */	\
    __asm__ (								\
	"mov%M4 %4,r5\n"						\
"	swap.w %3,r4\n"							\
"	swap.w r5,r6\n"							\
"	jsr @%5\n"							\
"	shll16 r6\n"							\
"	swap.w r4,r4\n"							\
"	jsr @%5\n"							\
"	swap.w r1,%0\n"							\
"	or r1,%0"							\
	: "=r" (q), "=&z" (r)						\
	: "1" (n1), "r" (n0), "rm" (d), "r" (&__udiv_qrnnd_16)		\
	: "r1", "r2", "r4", "r5", "r6", "pr", "t");			\
  } while (0)
#endif /* __FDPIC__  */

#define UDIV_TIME 80

#define sub_ddmmss(sh, sl, ah, al, bh, bl)				\
  __asm__ ("clrt;subc %5,%1; subc %4,%0"				\
	   : "=r" (sh), "=r" (sl)					\
	   : "0" (ah), "1" (al), "r" (bh), "r" (bl) : "t")

#endif /* __sh__ */

#if defined (__sparc__) && !defined (__arch64__) && !defined (__sparcv9) \
    && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  __asm__ ("addcc %r4,%5,%1\n\taddx %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\tsubx %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_v9__)
#define umul_ppmm(w1, w0, u, v) \
  do {									\
    register USItype __g1 asm ("g1");					\
    __asm__ ("umul\t%2,%3,%1\n\t"					\
	     "srlx\t%1, 32, %0"						\
	     : "=r" ((USItype) (w1)),					\
	       "=r" (__g1)						\
	     : "r" ((USItype) (u)),					\
	       "r" ((USItype) (v)));					\
    (w0) = __g1;							\
  } while (0)
#define udiv_qrnnd(__q, __r, __n1, __n0, __d) \
  __asm__ ("mov\t%2,%%y\n\t"						\
	   "udiv\t%3,%4,%0\n\t"						\
	   "umul\t%0,%4,%1\n\t"						\
	   "sub\t%3,%1,%1"						\
	   : "=&r" ((USItype) (__q)),					\
	     "=&r" ((USItype) (__r))					\
	   : "r" ((USItype) (__n1)),					\
	     "r" ((USItype) (__n0)),					\
	     "r" ((USItype) (__d)))
#else
#if defined (__sparc_v8__)
#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 udiv_qrnnd(__q, __r, __n1, __n0, __d) \
  __asm__ ("mov %2,%%y;nop;nop;nop;udiv %3,%4,%0;umul %0,%4,%1;sub %3,%1,%1"\
	   : "=&r" ((USItype) (__q)),					\
	     "=&r" ((USItype) (__r))					\
	   : "r" ((USItype) (__n1)),					\
	     "r" ((USItype) (__n0)),					\
	     "r" ((USItype) (__d)))
#else
#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 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
#define count_leading_zeros(count, x) \
  do {                                                                  \
  __asm__ ("scan %1,1,%0"                                               \
	   : "=r" ((USItype) (count))                                   \
	   : "r" ((USItype) (x)));					\
  } while (0)
/* Early sparclites return 63 for an argument of 0, but they warn that future
   implementations might change this.  Therefore, leave COUNT_LEADING_ZEROS_0
   undefined.  */
#else
/* SPARC without integer multiplication and divide instructions.
   (i.e. at least Sun4/20,40,60,65,75,110,260,280,330,360,380,470,490) */
#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,%%o5	! Don't move this insn\n"		\
"	and	%2,%%o5,%%o5	! 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,%%o5,%0\n"						\
"	rd	%%y,%1"							\
	   : "=r" ((USItype) (w1)),					\
	     "=r" ((USItype) (w0))					\
	   : "%rI" ((USItype) (u)),					\
	     "r" ((USItype) (v))						\
	   : "g1", "o5" __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"					\
"	mov	32,%%g1\n"						\
"	subcc	%1,%2,%%g0\n"						\
"1:	bcs	5f\n"							\
"	 addxcc %0,%0,%0	! shift n1n0 and a q-bit in lsb\n"	\
"	sub	%1,%2,%1	! this kills msb of n\n"		\
"	addx	%1,%1,%1	! so this can't give carry\n"		\
"	subcc	%%g1,1,%%g1\n"						\
"2:	bne	1b\n"							\
"	 subcc	%1,%2,%%g0\n"						\
"	bcs	3f\n"							\
"	 addxcc %0,%0,%0	! shift n1n0 and a q-bit in lsb\n"	\
"	b	3f\n"							\
"	 sub	%1,%2,%1	! this kills msb of n\n"		\
"4:	sub	%1,%2,%1\n"						\
"5:	addxcc	%1,%1,%1\n"						\
"	bcc	2b\n"							\
"	 subcc	%%g1,1,%%g1\n"						\
"! Got carry from n.  Subtract next step to cancel this carry.\n"	\
"	bne	4b\n"							\
"	 addcc	%0,%0,%0	! shift n1n0 and a 0-bit in lsb\n"	\
"	sub	%1,%2,%1\n"						\
"3:	xnor	%0,0,%0\n"						\
"	! End of inline udiv_qrnnd"					\
	   : "=&r" ((USItype) (__q)),					\
	     "=&r" ((USItype) (__r))					\
	   : "r" ((USItype) (__d)),					\
	     "1" ((USItype) (__n1)),					\
	     "0" ((USItype) (__n0)) : "g1" __AND_CLOBBER_CC)
#define UDIV_TIME (3+7*32)	/* 7 instructions/iteration. 32 iterations.  */
#endif /* __sparclite__ */
#endif /* __sparc_v8__ */
#endif /* __sparc_v9__ */
#endif /* sparc32 */

#if ((defined (__sparc__) && defined (__arch64__)) || defined (__sparcv9)) \
    && W_TYPE_SIZE == 64
#define add_ssaaaa(sh, sl, ah, al, bh, bl)				\
  do {									\
    UDItype __carry = 0;						\
    __asm__ ("addcc\t%r5,%6,%1\n\t"					\
	     "add\t%r3,%4,%0\n\t"					\
	     "movcs\t%%xcc, 1, %2\n\t"					\
	     "add\t%0, %2, %0"						\
	     : "=r" ((UDItype)(sh)),				      	\
	       "=&r" ((UDItype)(sl)),				      	\
	       "+r" (__carry)				      		\
	     : "%rJ" ((UDItype)(ah)),				     	\
	       "rI" ((UDItype)(bh)),				      	\
	       "%rJ" ((UDItype)(al)),				     	\
	       "rI" ((UDItype)(bl))				       	\
	     __CLOBBER_CC);						\
  } while (0)

#define sub_ddmmss(sh, sl, ah, al, bh, bl)				\
  do {									\
    UDItype __carry = 0;						\
    __asm__ ("subcc\t%r5,%6,%1\n\t"					\
	     "sub\t%r3,%4,%0\n\t"					\
	     "movcs\t%%xcc, 1, %2\n\t"					\
	     "sub\t%0, %2, %0"						\
	     : "=r" ((UDItype)(sh)),				      	\
	       "=&r" ((UDItype)(sl)),				      	\
	       "+r" (__carry)				      		\
	     : "%rJ" ((UDItype)(ah)),				     	\
	       "rI" ((UDItype)(bh)),				      	\
	       "%rJ" ((UDItype)(al)),				     	\
	       "rI" ((UDItype)(bl))				       	\
	     __CLOBBER_CC);						\
  } while (0)

#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" ((UDItype)(wh)),					\
	     "=&r" ((UDItype)(wl)),					\
	     "=&r" (tmp1), "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4)	\
	   : "r" ((UDItype)(u)),					\
	     "r" ((UDItype)(v))						\
	   __CLOBBER_CC);						\
  } while (0)
#define UMUL_TIME 96
#define UDIV_TIME 230
#endif /* sparc64 */

#if defined (__vax__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  __asm__ ("addl2 %5,%1\n\tadwc %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\tsbwc %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"						\
	     : "=r" (__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__ */

#ifdef _TMS320C6X
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  do									\
    {									\
      UDItype __ll;							\
      __asm__ ("addu .l1 %1, %2, %0"					\
	       : "=a" (__ll) : "a" (al), "a" (bl));			\
      (sl) = (USItype)__ll;						\
      (sh) = ((USItype)(__ll >> 32)) + (ah) + (bh);			\
    }									\
  while (0)

#ifdef _TMS320C6400_PLUS
#define __umulsidi3(u,v) ((UDItype)(USItype)u*(USItype)v)
#define umul_ppmm(w1, w0, u, v)						\
  do {									\
    UDItype __x = (UDItype) (USItype) (u) * (USItype) (v);		\
    (w1) = (USItype) (__x >> 32);					\
    (w0) = (USItype) (__x);						\
  } while (0)
#endif  /* _TMS320C6400_PLUS */

#define count_leading_zeros(count, x)	((count) = __builtin_clz (x))
#ifdef _TMS320C6400
#define count_trailing_zeros(count, x)	((count) = __builtin_ctz (x))
#endif
#define UMUL_TIME 4
#define UDIV_TIME 40
#endif /* _TMS320C6X */

#if defined (__xtensa__) && W_TYPE_SIZE == 32
/* This code is not Xtensa-configuration-specific, so rely on the compiler
   to expand builtin functions depending on what configuration features
   are available.  This avoids library calls when the operation can be
   performed in-line.  */
#define umul_ppmm(w1, w0, u, v)						\
  do {									\
    DWunion __w;							\
    __w.ll = __builtin_umulsidi3 (u, v);				\
    w1 = __w.s.high;							\
    w0 = __w.s.low;							\
  } while (0)
#define __umulsidi3(u, v)		__builtin_umulsidi3 (u, v)
#define count_leading_zeros(COUNT, X)	((COUNT) = __builtin_clz (X))
#define count_trailing_zeros(COUNT, X)	((COUNT) = __builtin_ctz (X))
#endif /* __xtensa__ */

#if defined xstormy16
extern UHItype __stormy16_count_leading_zeros (UHItype);
#define count_leading_zeros(count, x)					\
  do									\
    {									\
      UHItype size;							\
									\
      /* We assume that W_TYPE_SIZE is a multiple of 16...  */		\
      for ((count) = 0, size = W_TYPE_SIZE; size; size -= 16)		\
	{								\
	  UHItype c;							\
									\
	  c = __clzhi2 ((x) >> (size - 16));				\
	  (count) += c;							\
	  if (c != 16)							\
	    break;							\
	}								\
    }									\
  while (0)
#define COUNT_LEADING_ZEROS_0 W_TYPE_SIZE
#endif

#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__ */

/* 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 we lack umul_ppmm but have smul_ppmm, define umul_ppmm in terms of
   smul_ppmm.  */
#if !defined (umul_ppmm) && defined (smul_ppmm)
#define umul_ppmm(w1, w0, u, v)						\
  do {									\
    UWtype __w1;							\
    UWtype __xm0 = (u), __xm1 = (v);					\
    smul_ppmm (__w1, w0, __xm0, __xm1);					\
    (w1) = __w1 + (-(__xm0 >> (W_TYPE_SIZE - 1)) & __xm1)		\
		+ (-(__xm1 >> (W_TYPE_SIZE - 1)) & __xm0);		\
  } while (0)
#endif

/* If we still don't have umul_ppmm, define it using plain C.  */
#if !defined (umul_ppmm)
#define umul_ppmm(w1, w0, u, v)						\
  do {									\
    UWtype __x0, __x1, __x2, __x3;					\
    UHWtype __ul, __vl, __uh, __vh;					\
									\
    __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) * __ll_B + __ll_lowpart (__x0);		\
  } while (0)
#endif

#if !defined (__umulsidi3)
#define __umulsidi3(u, v) \
  ({DWunion __w;							\
    umul_ppmm (__w.s.high, __w.s.low, u, v);				\
    __w.ll; })
#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;					\
    UWtype __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 {									\
    extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype);	\
    UWtype __r;								\
    (q) = __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

#if !defined (count_leading_zeros)
#define count_leading_zeros(count, x) \
  do {									\
    UWtype __xr = (x);							\
    UWtype __a;								\
									\
    if (W_TYPE_SIZE <= 32)						\
      {									\
	__a = __xr < ((UWtype)1<<2*__BITS4)				\
	  ? (__xr < ((UWtype)1<<__BITS4) ? 0 : __BITS4)			\
	  : (__xr < ((UWtype)1<<3*__BITS4) ?  2*__BITS4 : 3*__BITS4);	\
      }									\
    else								\
      {									\
	for (__a = W_TYPE_SIZE - 8; __a > 0; __a -= 8)			\
	  if (((__xr >> __a) & 0xff) != 0)				\
	    break;							\
      }									\
									\
    (count) = W_TYPE_SIZE - (__clz_tab[__xr >> __a] + __a);		\
  } while (0)
#define COUNT_LEADING_ZEROS_0 W_TYPE_SIZE
#endif

#if !defined (count_trailing_zeros)
/* Define count_trailing_zeros using count_leading_zeros.  The latter might be
   defined in asm, but if it is not, the C version above is good enough.  */
#define count_trailing_zeros(count, x) \
  do {									\
    UWtype __ctz_x = (x);						\
    UWtype __ctz_c;							\
    count_leading_zeros (__ctz_c, __ctz_x & -__ctz_x);			\
    (count) = W_TYPE_SIZE - 1 - __ctz_c;				\
  } while (0)
#endif

#ifndef UDIV_NEEDS_NORMALIZATION
#define UDIV_NEEDS_NORMALIZATION 0
#endif