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linux/lib/mpi/longlong.h
James Hogan bbc25bee37 lib/mpi: Fix umul_ppmm() for MIPS64r6 
Current MIPS64r6 toolchains aren't able to generate efficient
DMULU/DMUHU based code for the C implementation of umul_ppmm(), which
performs an unsigned 64 x 64 bit multiply and returns the upper and
lower 64-bit halves of the 128-bit result. Instead it widens the 64-bit
inputs to 128-bits and emits a __multi3 intrinsic call to perform a 128
x 128 multiply. This is both inefficient, and it results in a link error
since we don't include __multi3 in MIPS linux.

For example commit 90a53e4432 ("cfg80211: implement regdb signature
checking") merged in v4.15-rc1 recently broke the 64r6_defconfig and
64r6el_defconfig builds by indirectly selecting MPILIB. The same build
errors can be reproduced on older kernels by enabling e.g. CRYPTO_RSA:

lib/mpi/generic_mpih-mul1.o: In function `mpihelp_mul_1':
lib/mpi/generic_mpih-mul1.c:50: undefined reference to `__multi3'
lib/mpi/generic_mpih-mul2.o: In function `mpihelp_addmul_1':
lib/mpi/generic_mpih-mul2.c:49: undefined reference to `__multi3'
lib/mpi/generic_mpih-mul3.o: In function `mpihelp_submul_1':
lib/mpi/generic_mpih-mul3.c:49: undefined reference to `__multi3'
lib/mpi/mpih-div.o In function `mpihelp_divrem':
lib/mpi/mpih-div.c:205: undefined reference to `__multi3'
lib/mpi/mpih-div.c:142: undefined reference to `__multi3'

Therefore add an efficient MIPS64r6 implementation of umul_ppmm() using
inline assembly and the DMULU/DMUHU instructions, to prevent __multi3
calls being emitted.

Fixes: 7fd08ca58a ("MIPS: Add build support for the MIPS R6 ISA")
Signed-off-by: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-mips@linux-mips.org
Cc: linux-crypto@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-12-22 19:39:09 +11:00

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/* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
* Note: I added some stuff for use with gnupg
*
* Copyright (C) 1991, 1992, 1993, 1994, 1996, 1998,
* 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
* License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this file; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA. */
#include <linux/count_zeros.h>
/* You have to define the following before including this file:
*
* UWtype -- An unsigned type, default type for operations (typically a "word")
* UHWtype -- An unsigned type, at least half the size of UWtype.
* UDWtype -- An unsigned type, at least twice as large a UWtype
* W_TYPE_SIZE -- size in bits of UWtype
*
* SItype, USItype -- Signed and unsigned 32 bit types.
* DItype, UDItype -- Signed and unsigned 64 bit types.
*
* On a 32 bit machine UWtype should typically be USItype;
* on a 64 bit machine, UWtype should typically be UDItype.
*/
#define __BITS4 (W_TYPE_SIZE / 4)
#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))
#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))
/* This is used to make sure no undesirable sharing between different libraries
that use this file takes place. */
#ifndef __MPN
#define __MPN(x) __##x
#endif
/* Define auxiliary asm macros.
*
* 1) umul_ppmm(high_prod, low_prod, 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)))
#endif /* __a29k__ */
#if defined(__alpha) && W_TYPE_SIZE == 64
#define umul_ppmm(ph, pl, m0, m1) \
do { \
UDItype __m0 = (m0), __m1 = (m1); \
(ph) = __builtin_alpha_umulh(__m0, __m1); \
(pl) = __m0 * __m1; \
} while (0)
#define UMUL_TIME 46
#ifndef LONGLONG_STANDALONE
#define udiv_qrnnd(q, r, n1, n0, d) \
do { UDItype __r; \
(q) = __udiv_qrnnd(&__r, (n1), (n0), (d)); \
(r) = __r; \
} while (0)
extern UDItype __udiv_qrnnd(UDItype *, UDItype, UDItype, UDItype);
#define UDIV_TIME 220
#endif /* LONGLONG_STANDALONE */
#endif /* __alpha */
/***************************************
************** ARM ******************
***************************************/
#if defined(__arm__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("adds %1, %4, %5\n" \
"adc %0, %2, %3" \
: "=r" (sh), \
"=&r" (sl) \
: "%r" ((USItype)(ah)), \
"rI" ((USItype)(bh)), \
"%r" ((USItype)(al)), \
"rI" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("subs %1, %4, %5\n" \
"sbc %0, %2, %3" \
: "=r" (sh), \
"=&r" (sl) \
: "r" ((USItype)(ah)), \
"rI" ((USItype)(bh)), \
"r" ((USItype)(al)), \
"rI" ((USItype)(bl)))
#if defined __ARM_ARCH_2__ || defined __ARM_ARCH_3__
#define umul_ppmm(xh, xl, a, b) \
__asm__ ("@ Inlined umul_ppmm\n" \
"mov %|r0, %2, lsr #16 @ AAAA\n" \
"mov %|r2, %3, lsr #16 @ BBBB\n" \
"bic %|r1, %2, %|r0, lsl #16 @ aaaa\n" \
"bic %0, %3, %|r2, lsl #16 @ bbbb\n" \
"mul %1, %|r1, %|r2 @ aaaa * BBBB\n" \
"mul %|r2, %|r0, %|r2 @ AAAA * BBBB\n" \
"mul %|r1, %0, %|r1 @ aaaa * bbbb\n" \
"mul %0, %|r0, %0 @ AAAA * bbbb\n" \
"adds %|r0, %1, %0 @ central sum\n" \
"addcs %|r2, %|r2, #65536\n" \
"adds %1, %|r1, %|r0, lsl #16\n" \
"adc %0, %|r2, %|r0, lsr #16" \
: "=&r" (xh), \
"=r" (xl) \
: "r" ((USItype)(a)), \
"r" ((USItype)(b)) \
: "r0", "r1", "r2")
#else
#define umul_ppmm(xh, xl, a, b) \
__asm__ ("@ Inlined umul_ppmm\n" \
"umull %1, %0, %2, %3" \
: "=&r" (xh), \
"=&r" (xl) \
: "r" ((USItype)(a)), \
"r" ((USItype)(b)) \
: "r0", "r1")
#endif
#define UMUL_TIME 20
#define UDIV_TIME 100
#endif /* __arm__ */
/***************************************
************** CLIPPER **************
***************************************/
#if defined(__clipper__) && W_TYPE_SIZE == 32
#define umul_ppmm(w1, w0, u, v) \
({union {UDItype __ll; \
struct {USItype __l, __h; } __i; \
} __xx; \
__asm__ ("mulwux %2,%0" \
: "=r" (__xx.__ll) \
: "%0" ((USItype)(u)), \
"r" ((USItype)(v))); \
(w1) = __xx.__i.__h; (w0) = __xx.__i.__l; })
#define smul_ppmm(w1, w0, u, v) \
({union {DItype __ll; \
struct {SItype __l, __h; } __i; \
} __xx; \
__asm__ ("mulwx %2,%0" \
: "=r" (__xx.__ll) \
: "%0" ((SItype)(u)), \
"r" ((SItype)(v))); \
(w1) = __xx.__i.__h; (w0) = __xx.__i.__l; })
#define __umulsidi3(u, v) \
({UDItype __w; \
__asm__ ("mulwux %2,%0" \
: "=r" (__w) \
: "%0" ((USItype)(u)), \
"r" ((USItype)(v))); \
__w; })
#endif /* __clipper__ */
/***************************************
************** GMICRO ***************
***************************************/
#if defined(__gmicro__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("add.w %5,%1\n" \
"addx %3,%0" \
: "=g" ((USItype)(sh)), \
"=&g" ((USItype)(sl)) \
: "%0" ((USItype)(ah)), \
"g" ((USItype)(bh)), \
"%1" ((USItype)(al)), \
"g" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("sub.w %5,%1\n" \
"subx %3,%0" \
: "=g" ((USItype)(sh)), \
"=&g" ((USItype)(sl)) \
: "0" ((USItype)(ah)), \
"g" ((USItype)(bh)), \
"1" ((USItype)(al)), \
"g" ((USItype)(bl)))
#define umul_ppmm(ph, pl, m0, m1) \
__asm__ ("mulx %3,%0,%1" \
: "=g" ((USItype)(ph)), \
"=r" ((USItype)(pl)) \
: "%0" ((USItype)(m0)), \
"g" ((USItype)(m1)))
#define udiv_qrnnd(q, r, nh, nl, d) \
__asm__ ("divx %4,%0,%1" \
: "=g" ((USItype)(q)), \
"=r" ((USItype)(r)) \
: "1" ((USItype)(nh)), \
"0" ((USItype)(nl)), \
"g" ((USItype)(d)))
#endif
/***************************************
************** HPPA *****************
***************************************/
#if defined(__hppa) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("add %4,%5,%1\n" \
"addc %2,%3,%0" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "%rM" ((USItype)(ah)), \
"rM" ((USItype)(bh)), \
"%rM" ((USItype)(al)), \
"rM" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("sub %4,%5,%1\n" \
"subb %2,%3,%0" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "rM" ((USItype)(ah)), \
"rM" ((USItype)(bh)), \
"rM" ((USItype)(al)), \
"rM" ((USItype)(bl)))
#if 0 && defined(_PA_RISC1_1)
/* xmpyu uses floating point register which is not allowed in Linux kernel. */
#define umul_ppmm(wh, wl, u, v) \
do { \
union {UDItype __ll; \
struct {USItype __h, __l; } __i; \
} __xx; \
__asm__ ("xmpyu %1,%2,%0" \
: "=*f" (__xx.__ll) \
: "*f" ((USItype)(u)), \
"*f" ((USItype)(v))); \
(wh) = __xx.__i.__h; \
(wl) = __xx.__i.__l; \
} while (0)
#define UMUL_TIME 8
#define UDIV_TIME 60
#else
#define UMUL_TIME 40
#define UDIV_TIME 80
#endif
#if 0 /* #ifndef LONGLONG_STANDALONE */
#define udiv_qrnnd(q, r, n1, n0, d) \
do { USItype __r; \
(q) = __udiv_qrnnd(&__r, (n1), (n0), (d)); \
(r) = __r; \
} while (0)
extern USItype __udiv_qrnnd();
#endif /* LONGLONG_STANDALONE */
#endif /* hppa */
/***************************************
************** I370 *****************
***************************************/
#if (defined(__i370__) || defined(__mvs__)) && W_TYPE_SIZE == 32
#define umul_ppmm(xh, xl, m0, m1) \
do { \
union {UDItype __ll; \
struct {USItype __h, __l; } __i; \
} __xx; \
USItype __m0 = (m0), __m1 = (m1); \
__asm__ ("mr %0,%3" \
: "=r" (__xx.__i.__h), \
"=r" (__xx.__i.__l) \
: "%1" (__m0), \
"r" (__m1)); \
(xh) = __xx.__i.__h; (xl) = __xx.__i.__l; \
(xh) += ((((SItype) __m0 >> 31) & __m1) \
+ (((SItype) __m1 >> 31) & __m0)); \
} while (0)
#define smul_ppmm(xh, xl, m0, m1) \
do { \
union {DItype __ll; \
struct {USItype __h, __l; } __i; \
} __xx; \
__asm__ ("mr %0,%3" \
: "=r" (__xx.__i.__h), \
"=r" (__xx.__i.__l) \
: "%1" (m0), \
"r" (m1)); \
(xh) = __xx.__i.__h; (xl) = __xx.__i.__l; \
} while (0)
#define sdiv_qrnnd(q, r, n1, n0, d) \
do { \
union {DItype __ll; \
struct {USItype __h, __l; } __i; \
} __xx; \
__xx.__i.__h = n1; __xx.__i.__l = n0; \
__asm__ ("dr %0,%2" \
: "=r" (__xx.__ll) \
: "0" (__xx.__ll), "r" (d)); \
(q) = __xx.__i.__l; (r) = __xx.__i.__h; \
} while (0)
#endif
/***************************************
************** I386 *****************
***************************************/
#undef __i386__
#if (defined(__i386__) || defined(__i486__)) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("addl %5,%1\n" \
"adcl %3,%0" \
: "=r" ((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)))
#ifndef UMUL_TIME
#define UMUL_TIME 40
#endif
#ifndef UDIV_TIME
#define UDIV_TIME 40
#endif
#endif /* 80x86 */
/***************************************
************** I860 *****************
***************************************/
#if defined(__i860__) && W_TYPE_SIZE == 32
#define rshift_rhlc(r, h, l, c) \
__asm__ ("shr %3,r0,r0\n" \
"shrd %1,%2,%0" \
"=r" (r) : "r" (h), "r" (l), "rn" (c))
#endif /* i860 */
/***************************************
************** I960 *****************
***************************************/
#if defined(__i960__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("cmpo 1,0\n" \
"addc %5,%4,%1\n" \
"addc %3,%2,%0" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "%dI" ((USItype)(ah)), \
"dI" ((USItype)(bh)), \
"%dI" ((USItype)(al)), \
"dI" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("cmpo 0,0\n" \
"subc %5,%4,%1\n" \
"subc %3,%2,%0" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "dI" ((USItype)(ah)), \
"dI" ((USItype)(bh)), \
"dI" ((USItype)(al)), \
"dI" ((USItype)(bl)))
#define umul_ppmm(w1, w0, u, v) \
({union {UDItype __ll; \
struct {USItype __l, __h; } __i; \
} __xx; \
__asm__ ("emul %2,%1,%0" \
: "=d" (__xx.__ll) \
: "%dI" ((USItype)(u)), \
"dI" ((USItype)(v))); \
(w1) = __xx.__i.__h; (w0) = __xx.__i.__l; })
#define __umulsidi3(u, v) \
({UDItype __w; \
__asm__ ("emul %2,%1,%0" \
: "=d" (__w) \
: "%dI" ((USItype)(u)), \
"dI" ((USItype)(v))); \
__w; })
#define udiv_qrnnd(q, r, nh, nl, d) \
do { \
union {UDItype __ll; \
struct {USItype __l, __h; } __i; \
} __nn; \
__nn.__i.__h = (nh); __nn.__i.__l = (nl); \
__asm__ ("ediv %d,%n,%0" \
: "=d" (__rq.__ll) \
: "dI" (__nn.__ll), \
"dI" ((USItype)(d))); \
(r) = __rq.__i.__l; (q) = __rq.__i.__h; \
} while (0)
#if defined(__i960mx) /* what is the proper symbol to test??? */
#define rshift_rhlc(r, h, l, c) \
do { \
union {UDItype __ll; \
struct {USItype __l, __h; } __i; \
} __nn; \
__nn.__i.__h = (h); __nn.__i.__l = (l); \
__asm__ ("shre %2,%1,%0" \
: "=d" (r) : "dI" (__nn.__ll), "dI" (c)); \
}
#endif /* i960mx */
#endif /* i960 */
/***************************************
************** 68000 ****************
***************************************/
#if (defined(__mc68000__) || defined(__mc68020__) || defined(__NeXT__) || defined(mc68020)) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("add%.l %5,%1\n" \
"addx%.l %3,%0" \
: "=d" ((USItype)(sh)), \
"=&d" ((USItype)(sl)) \
: "%0" ((USItype)(ah)), \
"d" ((USItype)(bh)), \
"%1" ((USItype)(al)), \
"g" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("sub%.l %5,%1\n" \
"subx%.l %3,%0" \
: "=d" ((USItype)(sh)), \
"=&d" ((USItype)(sl)) \
: "0" ((USItype)(ah)), \
"d" ((USItype)(bh)), \
"1" ((USItype)(al)), \
"g" ((USItype)(bl)))
#if (defined(__mc68020__) || defined(__NeXT__) || defined(mc68020))
#define umul_ppmm(w1, w0, u, v) \
__asm__ ("mulu%.l %3,%1:%0" \
: "=d" ((USItype)(w0)), \
"=d" ((USItype)(w1)) \
: "%0" ((USItype)(u)), \
"dmi" ((USItype)(v)))
#define UMUL_TIME 45
#define udiv_qrnnd(q, r, n1, n0, d) \
__asm__ ("divu%.l %4,%1:%0" \
: "=d" ((USItype)(q)), \
"=d" ((USItype)(r)) \
: "0" ((USItype)(n0)), \
"1" ((USItype)(n1)), \
"dmi" ((USItype)(d)))
#define UDIV_TIME 90
#define sdiv_qrnnd(q, r, n1, n0, d) \
__asm__ ("divs%.l %4,%1:%0" \
: "=d" ((USItype)(q)), \
"=d" ((USItype)(r)) \
: "0" ((USItype)(n0)), \
"1" ((USItype)(n1)), \
"dmi" ((USItype)(d)))
#else /* not mc68020 */
#define umul_ppmm(xh, xl, a, b) \
do { USItype __umul_tmp1, __umul_tmp2; \
__asm__ ("| Inlined umul_ppmm\n" \
"move%.l %5,%3\n" \
"move%.l %2,%0\n" \
"move%.w %3,%1\n" \
"swap %3\n" \
"swap %0\n" \
"mulu %2,%1\n" \
"mulu %3,%0\n" \
"mulu %2,%3\n" \
"swap %2\n" \
"mulu %5,%2\n" \
"add%.l %3,%2\n" \
"jcc 1f\n" \
"add%.l %#0x10000,%0\n" \
"1: move%.l %2,%3\n" \
"clr%.w %2\n" \
"swap %2\n" \
"swap %3\n" \
"clr%.w %3\n" \
"add%.l %3,%1\n" \
"addx%.l %2,%0\n" \
"| End inlined umul_ppmm" \
: "=&d" ((USItype)(xh)), "=&d" ((USItype)(xl)), \
"=d" (__umul_tmp1), "=&d" (__umul_tmp2) \
: "%2" ((USItype)(a)), "d" ((USItype)(b))); \
} while (0)
#define UMUL_TIME 100
#define UDIV_TIME 400
#endif /* not mc68020 */
#endif /* mc68000 */
/***************************************
************** 88000 ****************
***************************************/
#if defined(__m88000__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("addu.co %1,%r4,%r5\n" \
"addu.ci %0,%r2,%r3" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "%rJ" ((USItype)(ah)), \
"rJ" ((USItype)(bh)), \
"%rJ" ((USItype)(al)), \
"rJ" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("subu.co %1,%r4,%r5\n" \
"subu.ci %0,%r2,%r3" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "rJ" ((USItype)(ah)), \
"rJ" ((USItype)(bh)), \
"rJ" ((USItype)(al)), \
"rJ" ((USItype)(bl)))
#if defined(__m88110__)
#define umul_ppmm(wh, wl, u, v) \
do { \
union {UDItype __ll; \
struct {USItype __h, __l; } __i; \
} __x; \
__asm__ ("mulu.d %0,%1,%2" : "=r" (__x.__ll) : "r" (u), "r" (v)); \
(wh) = __x.__i.__h; \
(wl) = __x.__i.__l; \
} while (0)
#define udiv_qrnnd(q, r, n1, n0, d) \
({union {UDItype __ll; \
struct {USItype __h, __l; } __i; \
} __x, __q; \
__x.__i.__h = (n1); __x.__i.__l = (n0); \
__asm__ ("divu.d %0,%1,%2" \
: "=r" (__q.__ll) : "r" (__x.__ll), "r" (d)); \
(r) = (n0) - __q.__l * (d); (q) = __q.__l; })
#define UMUL_TIME 5
#define UDIV_TIME 25
#else
#define UMUL_TIME 17
#define UDIV_TIME 150
#endif /* __m88110__ */
#endif /* __m88000__ */
/***************************************
************** MIPS *****************
***************************************/
#if defined(__mips__) && W_TYPE_SIZE == 32
#if (__GNUC__ >= 5) || (__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
#define umul_ppmm(w1, w0, u, v) \
do { \
UDItype __ll = (UDItype)(u) * (v); \
w1 = __ll >> 32; \
w0 = __ll; \
} while (0)
#elif __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 defined(__mips_isa_rev) && __mips_isa_rev >= 6
/*
* GCC ends up emitting a __multi3 intrinsic call for MIPS64r6 with the plain C
* code below, so we special case MIPS64r6 until the compiler can do better.
*/
#define umul_ppmm(w1, w0, u, v) \
do { \
__asm__ ("dmulu %0,%1,%2" \
: "=d" ((UDItype)(w0)) \
: "d" ((UDItype)(u)), \
"d" ((UDItype)(v))); \
__asm__ ("dmuhu %0,%1,%2" \
: "=d" ((UDItype)(w1)) \
: "d" ((UDItype)(u)), \
"d" ((UDItype)(v))); \
} while (0)
#elif (__GNUC__ >= 5) || (__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
#define umul_ppmm(w1, w0, u, v) \
do { \
typedef unsigned int __ll_UTItype __attribute__((mode(TI))); \
__ll_UTItype __ll = (__ll_UTItype)(u) * (v); \
w1 = __ll >> 64; \
w0 = __ll; \
} while (0)
#elif __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; })
#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)
#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
#endif /* RT/ROMP */
/***************************************
************** SH2 ******************
***************************************/
#if (defined(__sh2__) || defined(__sh3__) || defined(__SH4__)) \
&& W_TYPE_SIZE == 32
#define umul_ppmm(w1, w0, u, v) \
__asm__ ( \
"dmulu.l %2,%3\n" \
"sts macl,%1\n" \
"sts mach,%0" \
: "=r" ((USItype)(w1)), \
"=r" ((USItype)(w0)) \
: "r" ((USItype)(u)), \
"r" ((USItype)(v)) \
: "macl", "mach")
#define UMUL_TIME 5
#endif
/***************************************
************** SPARC ****************
***************************************/
#if defined(__sparc__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("addcc %r4,%5,%1\n" \
"addx %r2,%3,%0" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "%rJ" ((USItype)(ah)), \
"rI" ((USItype)(bh)), \
"%rJ" ((USItype)(al)), \
"rI" ((USItype)(bl)) \
__CLOBBER_CC)
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("subcc %r4,%5,%1\n" \
"subx %r2,%3,%0" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "rJ" ((USItype)(ah)), \
"rI" ((USItype)(bh)), \
"rJ" ((USItype)(al)), \
"rI" ((USItype)(bl)) \
__CLOBBER_CC)
#if defined(__sparc_v8__)
/* Don't match immediate range because, 1) it is not often useful,
2) the 'I' flag thinks of the range as a 13 bit signed interval,
while we want to match a 13 bit interval, sign extended to 32 bits,
but INTERPRETED AS UNSIGNED. */
#define umul_ppmm(w1, w0, u, v) \
__asm__ ("umul %2,%3,%1;rd %%y,%0" \
: "=r" ((USItype)(w1)), \
"=r" ((USItype)(w0)) \
: "r" ((USItype)(u)), \
"r" ((USItype)(v)))
#define UMUL_TIME 5
#ifndef SUPERSPARC /* SuperSPARC's udiv only handles 53 bit dividends */
#define udiv_qrnnd(q, r, n1, n0, d) \
do { \
USItype __q; \
__asm__ ("mov %1,%%y;nop;nop;nop;udiv %2,%3,%0" \
: "=r" ((USItype)(__q)) \
: "r" ((USItype)(n1)), \
"r" ((USItype)(n0)), \
"r" ((USItype)(d))); \
(r) = (n0) - __q * (d); \
(q) = __q; \
} while (0)
#define UDIV_TIME 25
#endif /* SUPERSPARC */
#else /* ! __sparc_v8__ */
#if defined(__sparclite__)
/* This has hardware multiply but not divide. It also has two additional
instructions scan (ffs from high bit) and divscc. */
#define umul_ppmm(w1, w0, u, v) \
__asm__ ("umul %2,%3,%1;rd %%y,%0" \
: "=r" ((USItype)(w1)), \
"=r" ((USItype)(w0)) \
: "r" ((USItype)(u)), \
"r" ((USItype)(v)))
#define UMUL_TIME 5
#define udiv_qrnnd(q, r, n1, n0, d) \
__asm__ ("! Inlined udiv_qrnnd\n" \
"wr %%g0,%2,%%y ! Not a delayed write for sparclite\n" \
"tst %%g0\n" \
"divscc %3,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%%g1\n" \
"divscc %%g1,%4,%0\n" \
"rd %%y,%1\n" \
"bl,a 1f\n" \
"add %1,%4,%1\n" \
"1: ! End of inline udiv_qrnnd" \
: "=r" ((USItype)(q)), \
"=r" ((USItype)(r)) \
: "r" ((USItype)(n1)), \
"r" ((USItype)(n0)), \
"rI" ((USItype)(d)) \
: "%g1" __AND_CLOBBER_CC)
#define UDIV_TIME 37
#endif /* __sparclite__ */
#endif /* __sparc_v8__ */
/* Default to sparc v7 versions of umul_ppmm and udiv_qrnnd. */
#ifndef umul_ppmm
#define umul_ppmm(w1, w0, u, v) \
__asm__ ("! Inlined umul_ppmm\n" \
"wr %%g0,%2,%%y ! SPARC has 0-3 delay insn after a wr\n" \
"sra %3,31,%%g2 ! Don't move this insn\n" \
"and %2,%%g2,%%g2 ! Don't move this insn\n" \
"andcc %%g0,0,%%g1 ! Don't move this insn\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,%3,%%g1\n" \
"mulscc %%g1,0,%%g1\n" \
"add %%g1,%%g2,%0\n" \
"rd %%y,%1" \
: "=r" ((USItype)(w1)), \
"=r" ((USItype)(w0)) \
: "%rI" ((USItype)(u)), \
"r" ((USItype)(v)) \
: "%g1", "%g2" __AND_CLOBBER_CC)
#define UMUL_TIME 39 /* 39 instructions */
/* It's quite necessary to add this much assembler for the sparc.
The default udiv_qrnnd (in C) is more than 10 times slower! */
#define udiv_qrnnd(q, r, n1, n0, d) \
__asm__ ("! Inlined udiv_qrnnd\n\t" \
"mov 32,%%g1\n\t" \
"subcc %1,%2,%%g0\n\t" \
"1: bcs 5f\n\t" \
"addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n\t" \
"sub %1,%2,%1 ! this kills msb of n\n\t" \
"addx %1,%1,%1 ! so this can't give carry\n\t" \
"subcc %%g1,1,%%g1\n\t" \
"2: bne 1b\n\t" \
"subcc %1,%2,%%g0\n\t" \
"bcs 3f\n\t" \
"addxcc %0,%0,%0 ! shift n1n0 and a q-bit in lsb\n\t" \
"b 3f\n\t" \
"sub %1,%2,%1 ! this kills msb of n\n\t" \
"4: sub %1,%2,%1\n\t" \
"5: addxcc %1,%1,%1\n\t" \
"bcc 2b\n\t" \
"subcc %%g1,1,%%g1\n\t" \
"! Got carry from n. Subtract next step to cancel this carry.\n\t" \
"bne 4b\n\t" \
"addcc %0,%0,%0 ! shift n1n0 and a 0-bit in lsb\n\t" \
"sub %1,%2,%1\n\t" \
"3: xnor %0,0,%0\n\t" \
"! End of inline udiv_qrnnd\n" \
: "=&r" ((USItype)(q)), \
"=&r" ((USItype)(r)) \
: "r" ((USItype)(d)), \
"1" ((USItype)(n1)), \
"0" ((USItype)(n0)) : "%g1", "cc")
#define UDIV_TIME (3+7*32) /* 7 instructions/iteration. 32 iterations. */
#endif
#endif /* __sparc__ */
/***************************************
************** VAX ******************
***************************************/
#if defined(__vax__) && W_TYPE_SIZE == 32
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("addl2 %5,%1\n" \
"adwc %3,%0" \
: "=g" ((USItype)(sh)), \
"=&g" ((USItype)(sl)) \
: "%0" ((USItype)(ah)), \
"g" ((USItype)(bh)), \
"%1" ((USItype)(al)), \
"g" ((USItype)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("subl2 %5,%1\n" \
"sbwc %3,%0" \
: "=g" ((USItype)(sh)), \
"=&g" ((USItype)(sl)) \
: "0" ((USItype)(ah)), \
"g" ((USItype)(bh)), \
"1" ((USItype)(al)), \
"g" ((USItype)(bl)))
#define umul_ppmm(xh, xl, m0, m1) \
do { \
union {UDItype __ll; \
struct {USItype __l, __h; } __i; \
} __xx; \
USItype __m0 = (m0), __m1 = (m1); \
__asm__ ("emul %1,%2,$0,%0" \
: "=g" (__xx.__ll) \
: "g" (__m0), \
"g" (__m1)); \
(xh) = __xx.__i.__h; (xl) = __xx.__i.__l; \
(xh) += ((((SItype) __m0 >> 31) & __m1) \
+ (((SItype) __m1 >> 31) & __m0)); \
} while (0)
#define sdiv_qrnnd(q, r, n1, n0, d) \
do { \
union {DItype __ll; \
struct {SItype __l, __h; } __i; \
} __xx; \
__xx.__i.__h = n1; __xx.__i.__l = n0; \
__asm__ ("ediv %3,%2,%0,%1" \
: "=g" (q), "=g" (r) \
: "g" (__xx.__ll), "g" (d)); \
} while (0)
#endif /* __vax__ */
/***************************************
************** Z8000 ****************
***************************************/
#if defined(__z8000__) && W_TYPE_SIZE == 16
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("add %H1,%H5\n\tadc %H0,%H3" \
: "=r" ((unsigned int)(sh)), \
"=&r" ((unsigned int)(sl)) \
: "%0" ((unsigned int)(ah)), \
"r" ((unsigned int)(bh)), \
"%1" ((unsigned int)(al)), \
"rQR" ((unsigned int)(bl)))
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("sub %H1,%H5\n\tsbc %H0,%H3" \
: "=r" ((unsigned int)(sh)), \
"=&r" ((unsigned int)(sl)) \
: "0" ((unsigned int)(ah)), \
"r" ((unsigned int)(bh)), \
"1" ((unsigned int)(al)), \
"rQR" ((unsigned int)(bl)))
#define umul_ppmm(xh, xl, m0, m1) \
do { \
union {long int __ll; \
struct {unsigned int __h, __l; } __i; \
} __xx; \
unsigned int __m0 = (m0), __m1 = (m1); \
__asm__ ("mult %S0,%H3" \
: "=r" (__xx.__i.__h), \
"=r" (__xx.__i.__l) \
: "%1" (__m0), \
"rQR" (__m1)); \
(xh) = __xx.__i.__h; (xl) = __xx.__i.__l; \
(xh) += ((((signed int) __m0 >> 15) & __m1) \
+ (((signed int) __m1 >> 15) & __m0)); \
} while (0)
#endif /* __z8000__ */
#endif /* __GNUC__ */
/***************************************
*********** Generic Versions ********
***************************************/
#if !defined(umul_ppmm) && defined(__umulsidi3)
#define umul_ppmm(ph, pl, m0, m1) \
{ \
UDWtype __ll = __umulsidi3(m0, m1); \
ph = (UWtype) (__ll >> W_TYPE_SIZE); \
pl = (UWtype) __ll; \
}
#endif
#if !defined(__umulsidi3)
#define __umulsidi3(u, v) \
({UWtype __hi, __lo; \
umul_ppmm(__hi, __lo, u, v); \
((UDWtype) __hi << W_TYPE_SIZE) | __lo; })
#endif
/* If this machine has no inline assembler, use C macros. */
#if !defined(add_ssaaaa)
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
do { \
UWtype __x; \
__x = (al) + (bl); \
(sh) = (ah) + (bh) + (__x < (al)); \
(sl) = __x; \
} while (0)
#endif
#if !defined(sub_ddmmss)
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
do { \
UWtype __x; \
__x = (al) - (bl); \
(sh) = (ah) - (bh) - (__x > (al)); \
(sl) = __x; \
} while (0)
#endif
#if !defined(umul_ppmm)
#define umul_ppmm(w1, w0, u, v) \
do { \
UWtype __x0, __x1, __x2, __x3; \
UHWtype __ul, __vl, __uh, __vh; \
UWtype __u = (u), __v = (v); \
\
__ul = __ll_lowpart(__u); \
__uh = __ll_highpart(__u); \
__vl = __ll_lowpart(__v); \
__vh = __ll_highpart(__v); \
\
__x0 = (UWtype) __ul * __vl; \
__x1 = (UWtype) __ul * __vh; \
__x2 = (UWtype) __uh * __vl; \
__x3 = (UWtype) __uh * __vh; \
\
__x1 += __ll_highpart(__x0);/* this can't give carry */ \
__x1 += __x2; /* but this indeed can */ \
if (__x1 < __x2) /* did we get it? */ \
__x3 += __ll_B; /* yes, add it in the proper pos. */ \
\
(w1) = __x3 + __ll_highpart(__x1); \
(w0) = (__ll_lowpart(__x1) << W_TYPE_SIZE/2) + __ll_lowpart(__x0); \
} while (0)
#endif
#if !defined(umul_ppmm)
#define smul_ppmm(w1, w0, u, v) \
do { \
UWtype __w1; \
UWtype __m0 = (u), __m1 = (v); \
umul_ppmm(__w1, w0, __m0, __m1); \
(w1) = __w1 - (-(__m0 >> (W_TYPE_SIZE - 1)) & __m1) \
- (-(__m1 >> (W_TYPE_SIZE - 1)) & __m0); \
} while (0)
#endif
/* Define this unconditionally, so it can be used for debugging. */
#define __udiv_qrnnd_c(q, r, n1, n0, d) \
do { \
UWtype __d1, __d0, __q1, __q0, __r1, __r0, __m; \
__d1 = __ll_highpart(d); \
__d0 = __ll_lowpart(d); \
\
__r1 = (n1) % __d1; \
__q1 = (n1) / __d1; \
__m = (UWtype) __q1 * __d0; \
__r1 = __r1 * __ll_B | __ll_highpart(n0); \
if (__r1 < __m) { \
__q1--, __r1 += (d); \
if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */ \
if (__r1 < __m) \
__q1--, __r1 += (d); \
} \
__r1 -= __m; \
\
__r0 = __r1 % __d1; \
__q0 = __r1 / __d1; \
__m = (UWtype) __q0 * __d0; \
__r0 = __r0 * __ll_B | __ll_lowpart(n0); \
if (__r0 < __m) { \
__q0--, __r0 += (d); \
if (__r0 >= (d)) \
if (__r0 < __m) \
__q0--, __r0 += (d); \
} \
__r0 -= __m; \
\
(q) = (UWtype) __q1 * __ll_B | __q0; \
(r) = __r0; \
} while (0)
/* If the processor has no udiv_qrnnd but sdiv_qrnnd, go through
__udiv_w_sdiv (defined in libgcc or elsewhere). */
#if !defined(udiv_qrnnd) && defined(sdiv_qrnnd)
#define udiv_qrnnd(q, r, nh, nl, d) \
do { \
UWtype __r; \
(q) = __MPN(udiv_w_sdiv) (&__r, nh, nl, d); \
(r) = __r; \
} while (0)
#endif
/* If udiv_qrnnd was not defined for this processor, use __udiv_qrnnd_c. */
#if !defined(udiv_qrnnd)
#define UDIV_NEEDS_NORMALIZATION 1
#define udiv_qrnnd __udiv_qrnnd_c
#endif
#ifndef UDIV_NEEDS_NORMALIZATION
#define UDIV_NEEDS_NORMALIZATION 0
#endif
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