forked from luck/tmp_suning_uos_patched
5ce3e312ec
Adds the multi-precision-integer maths library which was originally taken from GnuPG and ported to the kernel by (among others) David Howells. This version is taken from Fedora kernel 2.6.32-71.14.1.el6. The difference is that checkpatch reported errors and warnings have been fixed. This library is used to implemenet RSA digital signature verification used in IMA/EVM integrity protection subsystem. Due to patch size limitation, the patch is divided into 4 parts. Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
1479 lines
42 KiB
C
1479 lines
42 KiB
C
/* 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. */
|
|
|
|
/* 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, multipler, multiplicand) multiplies two
|
|
* UWtype integers MULTIPLER 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)))
|
|
|
|
#define count_leading_zeros(count, x) \
|
|
__asm__ ("clz %0,%1" \
|
|
: "=r" ((USItype)(count)) \
|
|
: "r" ((USItype)(x)))
|
|
#define COUNT_LEADING_ZEROS_0 32
|
|
#endif /* __a29k__ */
|
|
|
|
#if defined(__alpha) && W_TYPE_SIZE == 64
|
|
#define umul_ppmm(ph, pl, m0, m1) \
|
|
do { \
|
|
UDItype __m0 = (m0), __m1 = (m1); \
|
|
__asm__ ("umulh %r1,%2,%0" \
|
|
: "=r" ((UDItype) ph) \
|
|
: "%rJ" (__m0), \
|
|
"rI" (__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();
|
|
#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" ((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__ ("subs %1, %4, %5\n" \
|
|
"sbc %0, %2, %3" \
|
|
: "=r" ((USItype)(sh)), \
|
|
"=&r" ((USItype)(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" ((USItype)(xh)), \
|
|
"=r" ((USItype)(xl)) \
|
|
: "r" ((USItype)(a)), \
|
|
"r" ((USItype)(b)) \
|
|
: "r0", "r1", "r2")
|
|
#else
|
|
#define umul_ppmm(xh, xl, a, b) \
|
|
__asm__ ("%@ Inlined umul_ppmm\n" \
|
|
"umull %r1, %r0, %r2, %r3" \
|
|
: "=&r" ((USItype)(xh)), \
|
|
"=r" ((USItype)(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)))
|
|
#define count_leading_zeros(count, x) \
|
|
__asm__ ("bsch/1 %1,%0" \
|
|
: "=g" (count) \
|
|
: "g" ((USItype)(x)), \
|
|
"0" ((USItype)0))
|
|
#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 defined(_PA_RISC1_1)
|
|
#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
|
|
#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 */
|
|
#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. " \
|
|
: "=r" (count), "=r" (__tmp) : "1" (x)); \
|
|
} while (0)
|
|
#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" ((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__ ("subl %5,%1\n" \
|
|
"sbbl %3,%0" \
|
|
: "=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__ ("mull %3" \
|
|
: "=a" ((USItype)(w0)), \
|
|
"=d" ((USItype)(w1)) \
|
|
: "%0" ((USItype)(u)), \
|
|
"rm" ((USItype)(v)))
|
|
#define udiv_qrnnd(q, r, n1, n0, d) \
|
|
__asm__ ("divl %4" \
|
|
: "=a" ((USItype)(q)), \
|
|
"=d" ((USItype)(r)) \
|
|
: "0" ((USItype)(n0)), \
|
|
"1" ((USItype)(n1)), \
|
|
"rm" ((USItype)(d)))
|
|
#define count_leading_zeros(count, x) \
|
|
do { \
|
|
USItype __cbtmp; \
|
|
__asm__ ("bsrl %1,%0" \
|
|
: "=r" (__cbtmp) : "rm" ((USItype)(x))); \
|
|
(count) = __cbtmp ^ 31; \
|
|
} while (0)
|
|
#define count_trailing_zeros(count, x) \
|
|
__asm__ ("bsfl %1,%0" : "=r" (count) : "rm" ((USItype)(x)))
|
|
#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)
|
|
#define count_leading_zeros(count, x) \
|
|
do { \
|
|
USItype __cbtmp; \
|
|
__asm__ ("scanbit %1,%0" \
|
|
: "=r" (__cbtmp) \
|
|
: "r" ((USItype)(x))); \
|
|
(count) = __cbtmp ^ 31; \
|
|
} while (0)
|
|
#define COUNT_LEADING_ZEROS_0 (-32) /* sic */
|
|
#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)))
|
|
#define count_leading_zeros(count, x) \
|
|
__asm__ ("bfffo %1{%b2:%b2},%0" \
|
|
: "=d" ((USItype)(count)) \
|
|
: "od" ((USItype)(x)), "n" (0))
|
|
#define COUNT_LEADING_ZEROS_0 32
|
|
#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)))
|
|
#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(__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
|
|
#if __GNUC__ > 2 || __GNUC_MINOR__ >= 7
|
|
#define umul_ppmm(w1, w0, u, v) \
|
|
__asm__ ("multu %2,%3" \
|
|
: "=l" ((USItype)(w0)), \
|
|
"=h" ((USItype)(w1)) \
|
|
: "d" ((USItype)(u)), \
|
|
"d" ((USItype)(v)))
|
|
#else
|
|
#define umul_ppmm(w1, w0, u, v) \
|
|
__asm__ ("multu %2,%3\n" \
|
|
"mflo %0\n" \
|
|
"mfhi %1" \
|
|
: "=d" ((USItype)(w0)), \
|
|
"=d" ((USItype)(w1)) \
|
|
: "d" ((USItype)(u)), \
|
|
"d" ((USItype)(v)))
|
|
#endif
|
|
#define UMUL_TIME 10
|
|
#define UDIV_TIME 100
|
|
#endif /* __mips__ */
|
|
|
|
/***************************************
|
|
************** MIPS/64 **************
|
|
***************************************/
|
|
#if (defined(__mips) && __mips >= 3) && W_TYPE_SIZE == 64
|
|
#if __GNUC__ > 2 || __GNUC_MINOR__ >= 7
|
|
#define umul_ppmm(w1, w0, u, v) \
|
|
__asm__ ("dmultu %2,%3" \
|
|
: "=l" ((UDItype)(w0)), \
|
|
"=h" ((UDItype)(w1)) \
|
|
: "d" ((UDItype)(u)), \
|
|
"d" ((UDItype)(v)))
|
|
#else
|
|
#define umul_ppmm(w1, w0, u, v) \
|
|
__asm__ ("dmultu %2,%3\n" \
|
|
"mflo %0\n" \
|
|
"mfhi %1" \
|
|
: "=d" ((UDItype)(w0)), \
|
|
"=d" ((UDItype)(w1)) \
|
|
: "d" ((UDItype)(u)), \
|
|
"d" ((UDItype)(v)))
|
|
#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; })
|
|
#define count_trailing_zeros(count, x) \
|
|
do { \
|
|
__asm__("ffsd %2,%0" \
|
|
: "=r"((USItype) (count)) \
|
|
: "0"((USItype) 0), "r"((USItype) (x))); \
|
|
} while (0)
|
|
#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" ((USItype)(sh)), \
|
|
"=&r" ((USItype)(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" ((USItype)(sh)), \
|
|
"=&r" ((USItype)(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" ((USItype)(sh)), \
|
|
"=&r" ((USItype)(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" ((USItype)(sh)), \
|
|
"=&r" ((USItype)(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" ((USItype)(sh)), \
|
|
"=&r" ((USItype)(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" ((USItype)(sh)), \
|
|
"=&r" ((USItype)(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" ((USItype)(sh)), \
|
|
"=&r" ((USItype)(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" ((USItype)(sh)), \
|
|
"=&r" ((USItype)(sl)) \
|
|
: "r" ((USItype)(ah)), \
|
|
"r" ((USItype)(bh)), \
|
|
"rI" ((USItype)(al)), \
|
|
"r" ((USItype)(bl))); \
|
|
} while (0)
|
|
#define count_leading_zeros(count, x) \
|
|
__asm__ ("{cntlz|cntlzw} %0,%1" \
|
|
: "=r" ((USItype)(count)) \
|
|
: "r" ((USItype)(x)))
|
|
#define COUNT_LEADING_ZEROS_0 32
|
|
#if defined(_ARCH_PPC)
|
|
#define umul_ppmm(ph, pl, m0, m1) \
|
|
do { \
|
|
USItype __m0 = (m0), __m1 = (m1); \
|
|
__asm__ ("mulhwu %0,%1,%2" \
|
|
: "=r" ((USItype) 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
|
|
#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 /* 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
|
|
#define count_leading_zeros(count, x) \
|
|
__asm__ ("scan %1,0,%0" \
|
|
: "=r" ((USItype)(x)) \
|
|
: "r" ((USItype)(count)))
|
|
/* 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. */
|
|
#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 */
|
|
#endif
|
|
#ifndef udiv_qrnnd
|
|
#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();
|
|
#define UDIV_TIME 140
|
|
#endif /* LONGLONG_STANDALONE */
|
|
#endif /* udiv_qrnnd */
|
|
#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
|
|
|
|
#undef count_leading_zeros
|
|
#if !defined(count_leading_zeros)
|
|
extern
|
|
#ifdef __STDC__
|
|
const
|
|
#endif
|
|
unsigned char __clz_tab[];
|
|
#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)
|
|
/* This version gives a well-defined value for zero. */
|
|
#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
|