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Diffstat (limited to 'src/longlong.h')
| -rw-r--r-- | src/longlong.h | 2201 |
1 files changed, 2201 insertions, 0 deletions
diff --git a/src/longlong.h b/src/longlong.h new file mode 100644 index 0000000..29564a7 --- /dev/null +++ b/src/longlong.h @@ -0,0 +1,2201 @@ +/* longlong.h -- definitions for mixed size 32/64 bit arithmetic. + +Copyright 1991-2016 Free Software Foundation, Inc. + +This file 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 3 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 Lesser General Public License for more +details. + +You should have received a copy of the GNU Lesser General Public License +along with this file. If not, see http://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 + + 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. + + Optionally, define: + + LONGLONG_STANDALONE -- Avoid code that needs machine-dependent support files + NO_ASM -- Disable inline asm + + + CAUTION! Using this version of longlong.h outside of GMP is not safe. You + need to include gmp.h and gmp-impl.h, or certain things might not work as + expected. +*/ + +#define __BITS4 (W_TYPE_SIZE / 4) +#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2)) +#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1)) +#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2)) + +/* This is used to make sure no undesirable sharing between different libraries + that use this file takes place. */ +#ifndef __MPN +#define __MPN(x) __##x +#endif + +/* Define auxiliary asm macros. + + 1) umul_ppmm(high_prod, low_prod, multiplier, multiplicand) multiplies two + UWtype integers MULTIPLIER and MULTIPLICAND, and generates a two UWtype + word product in HIGH_PROD and LOW_PROD. + + 2) __umulsidi3(a,b) multiplies two UWtype integers A and B, and returns a + UDWtype product. This is just a variant of umul_ppmm. + + 3) udiv_qrnnd(quotient, remainder, high_numerator, low_numerator, + denominator) divides a UDWtype, composed by the UWtype integers + HIGH_NUMERATOR and LOW_NUMERATOR, by DENOMINATOR and places the quotient + in QUOTIENT and the remainder in REMAINDER. HIGH_NUMERATOR must be less + than DENOMINATOR for correct operation. If, in addition, the most + significant bit of DENOMINATOR must be 1, then the pre-processor symbol + UDIV_NEEDS_NORMALIZATION is defined to 1. + + 4) sdiv_qrnnd(quotient, remainder, high_numerator, low_numerator, + denominator). Like udiv_qrnnd but the numbers are signed. The quotient + is rounded towards 0. + + 5) count_leading_zeros(count, x) counts the number of zero-bits from the + msb to the first non-zero bit in the UWtype X. This is the number of + steps X needs to be shifted left to set the msb. Undefined for X == 0, + unless the symbol COUNT_LEADING_ZEROS_0 is defined to some value. + + 6) count_trailing_zeros(count, x) like count_leading_zeros, but counts + from the least significant end. + + 7) add_ssaaaa(high_sum, low_sum, high_addend_1, low_addend_1, + high_addend_2, low_addend_2) adds two UWtype integers, composed by + HIGH_ADDEND_1 and LOW_ADDEND_1, and HIGH_ADDEND_2 and LOW_ADDEND_2 + respectively. The result is placed in HIGH_SUM and LOW_SUM. Overflow + (i.e. carry out) is not stored anywhere, and is lost. + + 8) sub_ddmmss(high_difference, low_difference, high_minuend, low_minuend, + high_subtrahend, low_subtrahend) subtracts two two-word UWtype integers, + composed by HIGH_MINUEND_1 and LOW_MINUEND_1, and HIGH_SUBTRAHEND_2 and + LOW_SUBTRAHEND_2 respectively. The result is placed in HIGH_DIFFERENCE + and LOW_DIFFERENCE. Overflow (i.e. carry out) is not stored anywhere, + and is lost. + + If any of these macros are left undefined for a particular CPU, + C macros are used. + + + Notes: + + For add_ssaaaa the two high and two low addends can both commute, but + unfortunately gcc only supports one "%" commutative in each asm block. + This has always been so but is only documented in recent versions + (eg. pre-release 3.3). Having two or more "%"s can cause an internal + compiler error in certain rare circumstances. + + Apparently it was only the last "%" that was ever actually respected, so + the code has been updated to leave just that. Clearly there's a free + choice whether high or low should get it, if there's a reason to favour + one over the other. Also obviously when the constraints on the two + operands are identical there's no benefit to the reloader in any "%" at + all. + + */ + +/* The CPUs come in alphabetical order below. + + Please add support for more CPUs here, or improve the current support + for the CPUs below! */ + + +/* count_leading_zeros_gcc_clz is count_leading_zeros implemented with gcc + 3.4 __builtin_clzl or __builtin_clzll, according to our limb size. + Similarly count_trailing_zeros_gcc_ctz using __builtin_ctzl or + __builtin_ctzll. + + These builtins are only used when we check what code comes out, on some + chips they're merely libgcc calls, where we will instead want an inline + in that case (either asm or generic C). + + These builtins are better than an asm block of the same insn, since an + asm block doesn't give gcc any information about scheduling or resource + usage. We keep an asm block for use on prior versions of gcc though. + + For reference, __builtin_ffs existed in gcc prior to __builtin_clz, but + it's not used (for count_leading_zeros) because it generally gives extra + code to ensure the result is 0 when the input is 0, which we don't need + or want. */ + +#ifdef _LONG_LONG_LIMB +#define count_leading_zeros_gcc_clz(count,x) \ + do { \ + ASSERT ((x) != 0); \ + (count) = __builtin_clzll (x); \ + } while (0) +#else +#define count_leading_zeros_gcc_clz(count,x) \ + do { \ + ASSERT ((x) != 0); \ + (count) = __builtin_clzl (x); \ + } while (0) +#endif + +#ifdef _LONG_LONG_LIMB +#define count_trailing_zeros_gcc_ctz(count,x) \ + do { \ + ASSERT ((x) != 0); \ + (count) = __builtin_ctzll (x); \ + } while (0) +#else +#define count_trailing_zeros_gcc_ctz(count,x) \ + do { \ + ASSERT ((x) != 0); \ + (count) = __builtin_ctzl (x); \ + } while (0) +#endif + + +/* FIXME: The macros using external routines like __MPN(count_leading_zeros) + don't need to be under !NO_ASM */ +#if ! defined (NO_ASM) + +#if defined (__alpha) && W_TYPE_SIZE == 64 +/* Most alpha-based machines, except Cray systems. */ +#if defined (__GNUC__) +#if __GMP_GNUC_PREREQ (3,3) +#define umul_ppmm(ph, pl, m0, m1) \ + do { \ + UDItype __m0 = (m0), __m1 = (m1); \ + (ph) = __builtin_alpha_umulh (__m0, __m1); \ + (pl) = __m0 * __m1; \ + } while (0) +#else +#define umul_ppmm(ph, pl, m0, m1) \ + do { \ + UDItype __m0 = (m0), __m1 = (m1); \ + __asm__ ("umulh %r1,%2,%0" \ + : "=r" (ph) \ + : "%rJ" (__m0), "rI" (__m1)); \ + (pl) = __m0 * __m1; \ + } while (0) +#endif +#define UMUL_TIME 18 +#else /* ! __GNUC__ */ +#include <machine/builtins.h> +#define umul_ppmm(ph, pl, m0, m1) \ + do { \ + UDItype __m0 = (m0), __m1 = (m1); \ + (ph) = __UMULH (__m0, __m1); \ + (pl) = __m0 * __m1; \ + } while (0) +#endif +#ifndef LONGLONG_STANDALONE +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { UWtype __di; \ + __di = __MPN(invert_limb) (d); \ + udiv_qrnnd_preinv (q, r, n1, n0, d, __di); \ + } while (0) +#define UDIV_PREINV_ALWAYS 1 +#define UDIV_NEEDS_NORMALIZATION 1 +#define UDIV_TIME 220 +#endif /* LONGLONG_STANDALONE */ + +/* clz_tab is required in all configurations, since mpn/alpha/cntlz.asm + always goes into libgmp.so, even when not actually used. */ +#define COUNT_LEADING_ZEROS_NEED_CLZ_TAB + +#if defined (__GNUC__) && HAVE_HOST_CPU_alpha_CIX +#define count_leading_zeros(COUNT,X) \ + __asm__("ctlz %1,%0" : "=r"(COUNT) : "r"(X)) +#define count_trailing_zeros(COUNT,X) \ + __asm__("cttz %1,%0" : "=r"(COUNT) : "r"(X)) +#endif /* clz/ctz using cix */ + +#if ! defined (count_leading_zeros) \ + && defined (__GNUC__) && ! defined (LONGLONG_STANDALONE) +/* ALPHA_CMPBGE_0 gives "cmpbge $31,src,dst", ie. test src bytes == 0. + "$31" is written explicitly in the asm, since an "r" constraint won't + select reg 31. There seems no need to worry about "r31" syntax for cray, + since gcc itself (pre-release 3.4) emits just $31 in various places. */ +#define ALPHA_CMPBGE_0(dst, src) \ + do { asm ("cmpbge $31, %1, %0" : "=r" (dst) : "r" (src)); } while (0) +/* Zero bytes are turned into bits with cmpbge, a __clz_tab lookup counts + them, locating the highest non-zero byte. A second __clz_tab lookup + counts the leading zero bits in that byte, giving the result. */ +#define count_leading_zeros(count, x) \ + do { \ + UWtype __clz__b, __clz__c, __clz__x = (x); \ + ALPHA_CMPBGE_0 (__clz__b, __clz__x); /* zero bytes */ \ + __clz__b = __clz_tab [(__clz__b >> 1) ^ 0x7F]; /* 8 to 1 byte */ \ + __clz__b = __clz__b * 8 - 7; /* 57 to 1 shift */ \ + __clz__x >>= __clz__b; \ + __clz__c = __clz_tab [__clz__x]; /* 8 to 1 bit */ \ + __clz__b = 65 - __clz__b; \ + (count) = __clz__b - __clz__c; \ + } while (0) +#define COUNT_LEADING_ZEROS_NEED_CLZ_TAB +#endif /* clz using cmpbge */ + +#if ! defined (count_leading_zeros) && ! defined (LONGLONG_STANDALONE) +#if HAVE_ATTRIBUTE_CONST +long __MPN(count_leading_zeros) (UDItype) __attribute__ ((const)); +#else +long __MPN(count_leading_zeros) (UDItype); +#endif +#define count_leading_zeros(count, x) \ + ((count) = __MPN(count_leading_zeros) (x)) +#endif /* clz using mpn */ +#endif /* __alpha */ + +#if defined (__AVR) && W_TYPE_SIZE == 8 +#define umul_ppmm(ph, pl, m0, m1) \ + do { \ + unsigned short __p = (unsigned short) (m0) * (m1); \ + (ph) = __p >> 8; \ + (pl) = __p; \ + } while (0) +#endif /* AVR */ + +#if defined (_CRAY) && W_TYPE_SIZE == 64 +#include <intrinsics.h> +#define UDIV_PREINV_ALWAYS 1 +#define UDIV_NEEDS_NORMALIZATION 1 +#define UDIV_TIME 220 +long __MPN(count_leading_zeros) (UDItype); +#define count_leading_zeros(count, x) \ + ((count) = _leadz ((UWtype) (x))) +#if defined (_CRAYIEEE) /* I.e., Cray T90/ieee, T3D, and T3E */ +#define umul_ppmm(ph, pl, m0, m1) \ + do { \ + UDItype __m0 = (m0), __m1 = (m1); \ + (ph) = _int_mult_upper (__m0, __m1); \ + (pl) = __m0 * __m1; \ + } while (0) +#ifndef LONGLONG_STANDALONE +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { UWtype __di; \ + __di = __MPN(invert_limb) (d); \ + udiv_qrnnd_preinv (q, r, n1, n0, d, __di); \ + } while (0) +#endif /* LONGLONG_STANDALONE */ +#endif /* _CRAYIEEE */ +#endif /* _CRAY */ + +#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) +#if defined (__GNUC__) && ! defined (__INTEL_COMPILER) +/* 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 UMUL_TIME 14 +#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) +#endif +#if defined (__INTEL_COMPILER) +#include <ia64intrin.h> +#define umul_ppmm(ph, pl, m0, m1) \ + do { \ + UWtype __m0 = (m0), __m1 = (m1); \ + ph = _m64_xmahu (__m0, __m1, 0); \ + pl = __m0 * __m1; \ + } while (0) +#endif +#ifndef LONGLONG_STANDALONE +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { UWtype __di; \ + __di = __MPN(invert_limb) (d); \ + udiv_qrnnd_preinv (q, r, n1, n0, d, __di); \ + } while (0) +#define UDIV_PREINV_ALWAYS 1 +#define UDIV_NEEDS_NORMALIZATION 1 +#endif +#define UDIV_TIME 220 +#endif + + +#if defined (__GNUC__) + +/* 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 (__a29k__) || defined (_AM29K)) && W_TYPE_SIZE == 32 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("add %1,%4,%5\n\taddc %0,%2,%3" \ + : "=r" (sh), "=&r" (sl) \ + : "r" (ah), "rI" (bh), "%r" (al), "rI" (bl)) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("sub %1,%4,%5\n\tsubc %0,%2,%3" \ + : "=r" (sh), "=&r" (sl) \ + : "r" (ah), "rI" (bh), "r" (al), "rI" (bl)) +#define umul_ppmm(xh, xl, m0, m1) \ + do { \ + USItype __m0 = (m0), __m1 = (m1); \ + __asm__ ("multiplu %0,%1,%2" \ + : "=r" (xl) \ + : "r" (__m0), "r" (__m1)); \ + __asm__ ("multmu %0,%1,%2" \ + : "=r" (xh) \ + : "r" (__m0), "r" (__m1)); \ + } while (0) +#define udiv_qrnnd(q, r, n1, n0, d) \ + __asm__ ("dividu %0,%3,%4" \ + : "=r" (q), "=q" (r) \ + : "1" (n1), "r" (n0), "r" (d)) +#define count_leading_zeros(count, x) \ + __asm__ ("clz %0,%1" \ + : "=r" (count) \ + : "r" (x)) +#define COUNT_LEADING_ZEROS_0 32 +#endif /* __a29k__ */ + +#if defined (__arc__) +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("add.f\t%1, %4, %5\n\tadc\t%0, %2, %3" \ + : "=r" (sh), \ + "=&r" (sl) \ + : "r" ((USItype) (ah)), \ + "rIJ" ((USItype) (bh)), \ + "%r" ((USItype) (al)), \ + "rIJ" ((USItype) (bl))) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("sub.f\t%1, %4, %5\n\tsbc\t%0, %2, %3" \ + : "=r" (sh), \ + "=&r" (sl) \ + : "r" ((USItype) (ah)), \ + "rIJ" ((USItype) (bh)), \ + "r" ((USItype) (al)), \ + "rIJ" ((USItype) (bl))) +#endif + +#if defined (__arm__) && (defined (__thumb2__) || !defined (__thumb__)) \ + && W_TYPE_SIZE == 32 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("adds\t%1, %4, %5\n\tadc\t%0, %2, %3" \ + : "=r" (sh), "=&r" (sl) \ + : "r" (ah), "rI" (bh), "%r" (al), "rI" (bl) __CLOBBER_CC) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + do { \ + if (__builtin_constant_p (al)) \ + { \ + if (__builtin_constant_p (ah)) \ + __asm__ ("rsbs\t%1, %5, %4\n\trsc\t%0, %3, %2" \ + : "=r" (sh), "=&r" (sl) \ + : "rI" (ah), "r" (bh), "rI" (al), "r" (bl) __CLOBBER_CC); \ + else \ + __asm__ ("rsbs\t%1, %5, %4\n\tsbc\t%0, %2, %3" \ + : "=r" (sh), "=&r" (sl) \ + : "r" (ah), "rI" (bh), "rI" (al), "r" (bl) __CLOBBER_CC); \ + } \ + else if (__builtin_constant_p (ah)) \ + { \ + if (__builtin_constant_p (bl)) \ + __asm__ ("subs\t%1, %4, %5\n\trsc\t%0, %3, %2" \ + : "=r" (sh), "=&r" (sl) \ + : "rI" (ah), "r" (bh), "r" (al), "rI" (bl) __CLOBBER_CC); \ + else \ + __asm__ ("rsbs\t%1, %5, %4\n\trsc\t%0, %3, %2" \ + : "=r" (sh), "=&r" (sl) \ + : "rI" (ah), "r" (bh), "rI" (al), "r" (bl) __CLOBBER_CC); \ + } \ + else if (__builtin_constant_p (bl)) \ + { \ + if (__builtin_constant_p (bh)) \ + __asm__ ("subs\t%1, %4, %5\n\tsbc\t%0, %2, %3" \ + : "=r" (sh), "=&r" (sl) \ + : "r" (ah), "rI" (bh), "r" (al), "rI" (bl) __CLOBBER_CC); \ + else \ + __asm__ ("subs\t%1, %4, %5\n\trsc\t%0, %3, %2" \ + : "=r" (sh), "=&r" (sl) \ + : "rI" (ah), "r" (bh), "r" (al), "rI" (bl) __CLOBBER_CC); \ + } \ + else /* only bh might be a constant */ \ + __asm__ ("subs\t%1, %4, %5\n\tsbc\t%0, %2, %3" \ + : "=r" (sh), "=&r" (sl) \ + : "r" (ah), "rI" (bh), "r" (al), "rI" (bl) __CLOBBER_CC);\ + } while (0) +#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 +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { UWtype __r; \ + (q) = __MPN(udiv_qrnnd) (&__r, (n1), (n0), (d)); \ + (r) = __r; \ + } while (0) +extern UWtype __MPN(udiv_qrnnd) (UWtype *, UWtype, UWtype, UWtype); +#define UDIV_TIME 200 +#else /* ARMv4 or newer */ +#define umul_ppmm(xh, xl, a, b) \ + __asm__ ("umull %0,%1,%2,%3" : "=&r" (xl), "=&r" (xh) : "r" (a), "r" (b)) +#define UMUL_TIME 5 +#define smul_ppmm(xh, xl, a, b) \ + __asm__ ("smull %0,%1,%2,%3" : "=&r" (xl), "=&r" (xh) : "r" (a), "r" (b)) +#ifndef LONGLONG_STANDALONE +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { UWtype __di; \ + __di = __MPN(invert_limb) (d); \ + udiv_qrnnd_preinv (q, r, n1, n0, d, __di); \ + } while (0) +#define UDIV_PREINV_ALWAYS 1 +#define UDIV_NEEDS_NORMALIZATION 1 +#define UDIV_TIME 70 +#endif /* LONGLONG_STANDALONE */ +#endif /* defined(__ARM_ARCH_2__) ... */ +#define count_leading_zeros(count, x) count_leading_zeros_gcc_clz(count, x) +#define count_trailing_zeros(count, x) count_trailing_zeros_gcc_ctz(count, x) +#define COUNT_LEADING_ZEROS_0 32 +#endif /* __arm__ */ + +#if defined (__aarch64__) && W_TYPE_SIZE == 64 +/* FIXME: Extend the immediate range for the low word by using both + ADDS and SUBS, since they set carry in the same way. */ +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("adds\t%1, %x4, %5\n\tadc\t%0, %x2, %x3" \ + : "=r" (sh), "=&r" (sl) \ + : "rZ" ((UDItype)(ah)), "rZ" ((UDItype)(bh)), \ + "%r" ((UDItype)(al)), "rI" ((UDItype)(bl)) __CLOBBER_CC) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("subs\t%1, %x4, %5\n\tsbc\t%0, %x2, %x3" \ + : "=r,r" (sh), "=&r,&r" (sl) \ + : "rZ,rZ" ((UDItype)(ah)), "rZ,rZ" ((UDItype)(bh)), \ + "r,Z" ((UDItype)(al)), "rI,r" ((UDItype)(bl)) __CLOBBER_CC) +#define umul_ppmm(ph, pl, m0, m1) \ + do { \ + UDItype __m0 = (m0), __m1 = (m1); \ + __asm__ ("umulh\t%0, %1, %2" : "=r" (ph) : "r" (__m0), "r" (__m1)); \ + (pl) = __m0 * __m1; \ + } while (0) +#define count_leading_zeros(count, x) count_leading_zeros_gcc_clz(count, x) +#define count_trailing_zeros(count, x) count_trailing_zeros_gcc_ctz(count, x) +#define COUNT_LEADING_ZEROS_0 64 +#endif /* __aarch64__ */ + +#if defined (__clipper__) && W_TYPE_SIZE == 32 +#define umul_ppmm(w1, w0, u, v) \ + ({union {UDItype __ll; \ + struct {USItype __l, __h;} __i; \ + } __x; \ + __asm__ ("mulwux %2,%0" \ + : "=r" (__x.__ll) \ + : "%0" ((USItype)(u)), "r" ((USItype)(v))); \ + (w1) = __x.__i.__h; (w0) = __x.__i.__l;}) +#define smul_ppmm(w1, w0, u, v) \ + ({union {DItype __ll; \ + struct {SItype __l, __h;} __i; \ + } __x; \ + __asm__ ("mulwx %2,%0" \ + : "=r" (__x.__ll) \ + : "%0" ((SItype)(u)), "r" ((SItype)(v))); \ + (w1) = __x.__i.__h; (w0) = __x.__i.__l;}) +#define __umulsidi3(u, v) \ + ({UDItype __w; \ + __asm__ ("mulwux %2,%0" \ + : "=r" (__w) : "%0" ((USItype)(u)), "r" ((USItype)(v))); \ + __w; }) +#endif /* __clipper__ */ + +/* Fujitsu vector computers. */ +#if defined (__uxp__) && W_TYPE_SIZE == 32 +#define umul_ppmm(ph, pl, u, v) \ + do { \ + union {UDItype __ll; \ + struct {USItype __h, __l;} __i; \ + } __x; \ + __asm__ ("mult.lu %1,%2,%0" : "=r" (__x.__ll) : "%r" (u), "rK" (v));\ + (ph) = __x.__i.__h; \ + (pl) = __x.__i.__l; \ + } while (0) +#define smul_ppmm(ph, pl, u, v) \ + do { \ + union {UDItype __ll; \ + struct {USItype __h, __l;} __i; \ + } __x; \ + __asm__ ("mult.l %1,%2,%0" : "=r" (__x.__ll) : "%r" (u), "rK" (v)); \ + (ph) = __x.__i.__h; \ + (pl) = __x.__i.__l; \ + } while (0) +#endif + +#if defined (__gmicro__) && W_TYPE_SIZE == 32 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("add.w %5,%1\n\taddx %3,%0" \ + : "=g" (sh), "=&g" (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\tsubx %3,%0" \ + : "=g" (sh), "=&g" (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" (ph), "=r" (pl) \ + : "%0" ((USItype)(m0)), "g" ((USItype)(m1))) +#define udiv_qrnnd(q, r, nh, nl, d) \ + __asm__ ("divx %4,%0,%1" \ + : "=g" (q), "=r" (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 + +#if defined (__hppa) && W_TYPE_SIZE == 32 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("add%I5 %5,%r4,%1\n\taddc %r2,%r3,%0" \ + : "=r" (sh), "=&r" (sl) \ + : "rM" (ah), "rM" (bh), "%rM" (al), "rI" (bl)) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("sub%I4 %4,%r5,%1\n\tsubb %r2,%r3,%0" \ + : "=r" (sh), "=&r" (sl) \ + : "rM" (ah), "rM" (bh), "rI" (al), "rM" (bl)) +#if defined (_PA_RISC1_1) +#define umul_ppmm(wh, wl, u, v) \ + do { \ + union {UDItype __ll; \ + struct {USItype __h, __l;} __i; \ + } __x; \ + __asm__ ("xmpyu %1,%2,%0" : "=*f" (__x.__ll) : "*f" (u), "*f" (v)); \ + (wh) = __x.__i.__h; \ + (wl) = __x.__i.__l; \ + } while (0) +#define UMUL_TIME 8 +#define UDIV_TIME 60 +#else +#define UMUL_TIME 40 +#define UDIV_TIME 80 +#endif +#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 /* hppa */ + +/* These macros are for ABI=2.0w. In ABI=2.0n they can't be used, since GCC + (3.2) puts longlong into two adjacent 32-bit registers. Presumably this + is just a case of no direct support for 2.0n but treating it like 1.0. */ +#if defined (__hppa) && W_TYPE_SIZE == 64 && ! defined (_LONG_LONG_LIMB) +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("add%I5 %5,%r4,%1\n\tadd,dc %r2,%r3,%0" \ + : "=r" (sh), "=&r" (sl) \ + : "rM" (ah), "rM" (bh), "%rM" (al), "rI" (bl)) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("sub%I4 %4,%r5,%1\n\tsub,db %r2,%r3,%0" \ + : "=r" (sh), "=&r" (sl) \ + : "rM" (ah), "rM" (bh), "rI" (al), "rM" (bl)) +#endif /* hppa */ + +#if (defined (__i370__) || defined (__s390__) || defined (__mvs__)) && W_TYPE_SIZE == 32 +#if defined (__zarch__) || defined (HAVE_HOST_CPU_s390_zarch) +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + do { \ +/* if (__builtin_constant_p (bl)) \ + __asm__ ("alfi\t%1,%o5\n\talcr\t%0,%3" \ + : "=r" (sh), "=&r" (sl) \ + : "0" (ah), "r" (bh), "%1" (al), "n" (bl) __CLOBBER_CC);\ + else \ +*/ __asm__ ("alr\t%1,%5\n\talcr\t%0,%3" \ + : "=r" (sh), "=&r" (sl) \ + : "0" (ah), "r" (bh), "%1" (al), "r" (bl)__CLOBBER_CC); \ + } while (0) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + do { \ +/* if (__builtin_constant_p (bl)) \ + __asm__ ("slfi\t%1,%o5\n\tslbr\t%0,%3" \ + : "=r" (sh), "=&r" (sl) \ + : "0" (ah), "r" (bh), "1" (al), "n" (bl) __CLOBBER_CC); \ + else \ +*/ __asm__ ("slr\t%1,%5\n\tslbr\t%0,%3" \ + : "=r" (sh), "=&r" (sl) \ + : "0" (ah), "r" (bh), "1" (al), "r" (bl) __CLOBBER_CC); \ + } while (0) +#if __GMP_GNUC_PREREQ (4,5) +#define umul_ppmm(xh, xl, m0, m1) \ + do { \ + union {UDItype __ll; \ + struct {USItype __h, __l;} __i; \ + } __x; \ + __x.__ll = (UDItype) (m0) * (UDItype) (m1); \ + (xh) = __x.__i.__h; (xl) = __x.__i.__l; \ + } while (0) +#else +#if 0 +/* FIXME: this fails if gcc knows about the 64-bit registers. Use only + with a new enough processor pretending we have 32-bit registers. */ +#define umul_ppmm(xh, xl, m0, m1) \ + do { \ + union {UDItype __ll; \ + struct {USItype __h, __l;} __i; \ + } __x; \ + __asm__ ("mlr\t%0,%2" \ + : "=r" (__x.__ll) \ + : "%0" (m0), "r" (m1)); \ + (xh) = __x.__i.__h; (xl) = __x.__i.__l; \ + } while (0) +#else +#define umul_ppmm(xh, xl, m0, m1) \ + do { \ + /* When we have 64-bit regs and gcc is aware of that, we cannot simply use + DImode for the product, since that would be allocated to a single 64-bit + register, whereas mlr uses the low 32-bits of an even-odd register pair. + */ \ + register USItype __r0 __asm__ ("0"); \ + register USItype __r1 __asm__ ("1") = (m0); \ + __asm__ ("mlr\t%0,%3" \ + : "=r" (__r0), "=r" (__r1) \ + : "r" (__r1), "r" (m1)); \ + (xh) = __r0; (xl) = __r1; \ + } while (0) +#endif /* if 0 */ +#endif +#if 0 +/* FIXME: this fails if gcc knows about the 64-bit registers. Use only + with a new enough processor pretending we have 32-bit registers. */ +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { \ + union {UDItype __ll; \ + struct {USItype __h, __l;} __i; \ + } __x; \ + __x.__i.__h = n1; __x.__i.__l = n0; \ + __asm__ ("dlr\t%0,%2" \ + : "=r" (__x.__ll) \ + : "0" (__x.__ll), "r" (d)); \ + (q) = __x.__i.__l; (r) = __x.__i.__h; \ + } while (0) +#else +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { \ + register USItype __r0 __asm__ ("0") = (n1); \ + register USItype __r1 __asm__ ("1") = (n0); \ + __asm__ ("dlr\t%0,%4" \ + : "=r" (__r0), "=r" (__r1) \ + : "r" (__r0), "r" (__r1), "r" (d)); \ + (q) = __r1; (r) = __r0; \ + } while (0) +#endif /* if 0 */ +#else /* if __zarch__ */ +/* FIXME: this fails if gcc knows about the 64-bit registers. */ +#define smul_ppmm(xh, xl, m0, m1) \ + do { \ + union {DItype __ll; \ + struct {USItype __h, __l;} __i; \ + } __x; \ + __asm__ ("mr\t%0,%2" \ + : "=r" (__x.__ll) \ + : "%0" (m0), "r" (m1)); \ + (xh) = __x.__i.__h; (xl) = __x.__i.__l; \ + } while (0) +/* FIXME: this fails if gcc knows about the 64-bit registers. */ +#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\t%0,%2" \ + : "=r" (__x.__ll) \ + : "0" (__x.__ll), "r" (d)); \ + (q) = __x.__i.__l; (r) = __x.__i.__h; \ + } while (0) +#endif /* if __zarch__ */ +#endif + +#if defined (__s390x__) && W_TYPE_SIZE == 64 +/* We need to cast operands with register constraints, otherwise their types + will be assumed to be SImode by gcc. For these machines, such operations + will insert a value into the low 32 bits, and leave the high 32 bits with + garbage. */ +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + do { \ + __asm__ ("algr\t%1,%5\n\talcgr\t%0,%3" \ + : "=r" (sh), "=&r" (sl) \ + : "0" ((UDItype)(ah)), "r" ((UDItype)(bh)), \ + "%1" ((UDItype)(al)), "r" ((UDItype)(bl)) __CLOBBER_CC); \ + } while (0) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + do { \ + __asm__ ("slgr\t%1,%5\n\tslbgr\t%0,%3" \ + : "=r" (sh), "=&r" (sl) \ + : "0" ((UDItype)(ah)), "r" ((UDItype)(bh)), \ + "1" ((UDItype)(al)), "r" ((UDItype)(bl)) __CLOBBER_CC); \ + } while (0) +#define umul_ppmm(xh, xl, m0, m1) \ + do { \ + union {unsigned int __attribute__ ((mode(TI))) __ll; \ + struct {UDItype __h, __l;} __i; \ + } __x; \ + __asm__ ("mlgr\t%0,%2" \ + : "=r" (__x.__ll) \ + : "%0" ((UDItype)(m0)), "r" ((UDItype)(m1))); \ + (xh) = __x.__i.__h; (xl) = __x.__i.__l; \ + } while (0) +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { \ + union {unsigned int __attribute__ ((mode(TI))) __ll; \ + struct {UDItype __h, __l;} __i; \ + } __x; \ + __x.__i.__h = n1; __x.__i.__l = n0; \ + __asm__ ("dlgr\t%0,%2" \ + : "=r" (__x.__ll) \ + : "0" (__x.__ll), "r" ((UDItype)(d))); \ + (q) = __x.__i.__l; (r) = __x.__i.__h; \ + } while (0) +#if 0 /* FIXME: Enable for z10 (?) */ +#define count_leading_zeros(cnt, x) \ + do { \ + union {unsigned int __attribute__ ((mode(TI))) __ll; \ + struct {UDItype __h, __l;} __i; \ + } __clr_cnt; \ + __asm__ ("flogr\t%0,%1" \ + : "=r" (__clr_cnt.__ll) \ + : "r" (x) __CLOBBER_CC); \ + (cnt) = __clr_cnt.__i.__h; \ + } while (0) +#endif +#endif + +/* On x86 and x86_64, every asm implicitly clobbers "flags" and "fpsr", + so we don't need __CLOBBER_CC. */ +#if (defined (__i386__) || defined (__i486__)) && W_TYPE_SIZE == 32 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("addl %5,%k1\n\tadcl %3,%k0" \ + : "=r" (sh), "=&r" (sl) \ + : "0" ((USItype)(ah)), "g" ((USItype)(bh)), \ + "%1" ((USItype)(al)), "g" ((USItype)(bl))) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("subl %5,%k1\n\tsbbl %3,%k0" \ + : "=r" (sh), "=&r" (sl) \ + : "0" ((USItype)(ah)), "g" ((USItype)(bh)), \ + "1" ((USItype)(al)), "g" ((USItype)(bl))) +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("mull %3" \ + : "=a" (w0), "=d" (w1) \ + : "%0" ((USItype)(u)), "rm" ((USItype)(v))) +#define udiv_qrnnd(q, r, n1, n0, dx) /* d renamed to dx avoiding "=d" */\ + __asm__ ("divl %4" /* stringification in K&R C */ \ + : "=a" (q), "=d" (r) \ + : "0" ((USItype)(n0)), "1" ((USItype)(n1)), "rm" ((USItype)(dx))) + +#if HAVE_HOST_CPU_i586 || HAVE_HOST_CPU_pentium || HAVE_HOST_CPU_pentiummmx +/* Pentium bsrl takes between 10 and 72 cycles depending where the most + significant 1 bit is, hence the use of the following alternatives. bsfl + is slow too, between 18 and 42 depending where the least significant 1 + bit is, so let the generic count_trailing_zeros below make use of the + count_leading_zeros here too. */ + +#if HAVE_HOST_CPU_pentiummmx && ! defined (LONGLONG_STANDALONE) +/* The following should be a fixed 14 or 15 cycles, but possibly plus an L1 + cache miss reading from __clz_tab. For P55 it's favoured over the float + below so as to avoid mixing MMX and x87, since the penalty for switching + between the two is about 100 cycles. + + The asm block sets __shift to -3 if the high 24 bits are clear, -2 for + 16, -1 for 8, or 0 otherwise. This could be written equivalently as + follows, but as of gcc 2.95.2 it results in conditional jumps. + + __shift = -(__n < 0x1000000); + __shift -= (__n < 0x10000); + __shift -= (__n < 0x100); + + The middle two sbbl and cmpl's pair, and with luck something gcc + generates might pair with the first cmpl and the last sbbl. The "32+1" + constant could be folded into __clz_tab[], but it doesn't seem worth + making a different table just for that. */ + +#define count_leading_zeros(c,n) \ + do { \ + USItype __n = (n); \ + USItype __shift; \ + __asm__ ("cmpl $0x1000000, %1\n" \ + "sbbl %0, %0\n" \ + "cmpl $0x10000, %1\n" \ + "sbbl $0, %0\n" \ + "cmpl $0x100, %1\n" \ + "sbbl $0, %0\n" \ + : "=&r" (__shift) : "r" (__n)); \ + __shift = __shift*8 + 24 + 1; \ + (c) = 32 + 1 - __shift - __clz_tab[__n >> __shift]; \ + } while (0) +#define COUNT_LEADING_ZEROS_NEED_CLZ_TAB +#define COUNT_LEADING_ZEROS_0 31 /* n==0 indistinguishable from n==1 */ + +#else /* ! pentiummmx || LONGLONG_STANDALONE */ +/* The following should be a fixed 14 cycles or so. Some scheduling + opportunities should be available between the float load/store too. This + sort of code is used in gcc 3 for __builtin_ffs (with "n&-n") and is + apparently suggested by the Intel optimizing manual (don't know exactly + where). gcc 2.95 or up will be best for this, so the "double" is + correctly aligned on the stack. */ +#define count_leading_zeros(c,n) \ + do { \ + union { \ + double d; \ + unsigned a[2]; \ + } __u; \ + ASSERT ((n) != 0); \ + __u.d = (UWtype) (n); \ + (c) = 0x3FF + 31 - (__u.a[1] >> 20); \ + } while (0) +#define COUNT_LEADING_ZEROS_0 (0x3FF + 31) +#endif /* pentiummx */ + +#else /* ! pentium */ + +#if __GMP_GNUC_PREREQ (3,4) /* using bsrl */ +#define count_leading_zeros(count,x) count_leading_zeros_gcc_clz(count,x) +#endif /* gcc clz */ + +/* On P6, gcc prior to 3.0 generates a partial register stall for + __cbtmp^31, due to using "xorb $31" instead of "xorl $31", the former + being 1 code byte smaller. "31-__cbtmp" is a workaround, probably at the + cost of one extra instruction. Do this for "i386" too, since that means + generic x86. */ +#if ! defined (count_leading_zeros) && __GNUC__ < 3 \ + && (HAVE_HOST_CPU_i386 \ + || HAVE_HOST_CPU_i686 \ + || HAVE_HOST_CPU_pentiumpro \ + || HAVE_HOST_CPU_pentium2 \ + || HAVE_HOST_CPU_pentium3) +#define count_leading_zeros(count, x) \ + do { \ + USItype __cbtmp; \ + ASSERT ((x) != 0); \ + __asm__ ("bsrl %1,%0" : "=r" (__cbtmp) : "rm" ((USItype)(x))); \ + (count) = 31 - __cbtmp; \ + } while (0) +#endif /* gcc<3 asm bsrl */ + +#ifndef count_leading_zeros +#define count_leading_zeros(count, x) \ + do { \ + USItype __cbtmp; \ + ASSERT ((x) != 0); \ + __asm__ ("bsrl %1,%0" : "=r" (__cbtmp) : "rm" ((USItype)(x))); \ + (count) = __cbtmp ^ 31; \ + } while (0) +#endif /* asm bsrl */ + +#if __GMP_GNUC_PREREQ (3,4) /* using bsfl */ +#define count_trailing_zeros(count,x) count_trailing_zeros_gcc_ctz(count,x) +#endif /* gcc ctz */ + +#ifndef count_trailing_zeros +#define count_trailing_zeros(count, x) \ + do { \ + ASSERT ((x) != 0); \ + __asm__ ("bsfl %1,%k0" : "=r" (count) : "rm" ((USItype)(x))); \ + } while (0) +#endif /* asm bsfl */ + +#endif /* ! pentium */ + +#ifndef UMUL_TIME +#define UMUL_TIME 10 +#endif +#ifndef UDIV_TIME +#define UDIV_TIME 40 +#endif +#endif /* 80x86 */ + +#if defined (__amd64__) && W_TYPE_SIZE == 64 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("addq %5,%q1\n\tadcq %3,%q0" \ + : "=r" (sh), "=&r" (sl) \ + : "0" ((UDItype)(ah)), "rme" ((UDItype)(bh)), \ + "%1" ((UDItype)(al)), "rme" ((UDItype)(bl))) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("subq %5,%q1\n\tsbbq %3,%q0" \ + : "=r" (sh), "=&r" (sl) \ + : "0" ((UDItype)(ah)), "rme" ((UDItype)(bh)), \ + "1" ((UDItype)(al)), "rme" ((UDItype)(bl))) +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("mulq %3" \ + : "=a" (w0), "=d" (w1) \ + : "%0" ((UDItype)(u)), "rm" ((UDItype)(v))) +#define udiv_qrnnd(q, r, n1, n0, dx) /* d renamed to dx avoiding "=d" */\ + __asm__ ("divq %4" /* stringification in K&R C */ \ + : "=a" (q), "=d" (r) \ + : "0" ((UDItype)(n0)), "1" ((UDItype)(n1)), "rm" ((UDItype)(dx))) +/* bsrq destination must be a 64-bit register, hence UDItype for __cbtmp. */ +#define count_leading_zeros(count, x) \ + do { \ + UDItype __cbtmp; \ + ASSERT ((x) != 0); \ + __asm__ ("bsrq %1,%0" : "=r" (__cbtmp) : "rm" ((UDItype)(x))); \ + (count) = __cbtmp ^ 63; \ + } while (0) +/* bsfq destination must be a 64-bit register, "%q0" forces this in case + count is only an int. */ +#define count_trailing_zeros(count, x) \ + do { \ + ASSERT ((x) != 0); \ + __asm__ ("bsfq %1,%q0" : "=r" (count) : "rm" ((UDItype)(x))); \ + } while (0) +#endif /* __amd64__ */ + +#if defined (__i860__) && W_TYPE_SIZE == 32 +#define rshift_rhlc(r,h,l,c) \ + __asm__ ("shr %3,r0,r0\;shrd %1,%2,%0" \ + "=r" (r) : "r" (h), "r" (l), "rn" (c)) +#endif /* i860 */ + +#if defined (__i960__) && W_TYPE_SIZE == 32 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("cmpo 1,0\;addc %5,%4,%1\;addc %3,%2,%0" \ + : "=r" (sh), "=&r" (sl) \ + : "dI" (ah), "dI" (bh), "%dI" (al), "dI" (bl)) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("cmpo 0,0\;subc %5,%4,%1\;subc %3,%2,%0" \ + : "=r" (sh), "=&r" (sl) \ + : "dI" (ah), "dI" (bh), "dI" (al), "dI" (bl)) +#define umul_ppmm(w1, w0, u, v) \ + ({union {UDItype __ll; \ + struct {USItype __l, __h;} __i; \ + } __x; \ + __asm__ ("emul %2,%1,%0" \ + : "=d" (__x.__ll) : "%dI" (u), "dI" (v)); \ + (w1) = __x.__i.__h; (w0) = __x.__i.__l;}) +#define __umulsidi3(u, v) \ + ({UDItype __w; \ + __asm__ ("emul %2,%1,%0" : "=d" (__w) : "%dI" (u), "dI" (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" (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" (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 */ + +#if (defined (__mc68000__) || defined (__mc68020__) || defined(mc68020) \ + || defined (__m68k__) || defined (__mc5200__) || defined (__mc5206e__) \ + || defined (__mc5307__)) && W_TYPE_SIZE == 32 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("add%.l %5,%1\n\taddx%.l %3,%0" \ + : "=d" (sh), "=&d" (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" (sh), "=&d" (sl) \ + : "0" ((USItype)(ah)), "d" ((USItype)(bh)), \ + "1" ((USItype)(al)), "g" ((USItype)(bl))) +/* The '020, '030, '040 and CPU32 have 32x32->64 and 64/32->32q-32r. */ +#if defined (__mc68020__) || defined(mc68020) \ + || defined (__mc68030__) || defined (mc68030) \ + || defined (__mc68040__) || defined (mc68040) \ + || defined (__mcpu32__) || defined (mcpu32) \ + || defined (__NeXT__) +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("mulu%.l %3,%1:%0" \ + : "=d" (w0), "=d" (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" (q), "=d" (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" (q), "=d" (r) \ + : "0" ((USItype)(n0)), "1" ((USItype)(n1)), "dmi" ((USItype)(d))) +#else /* for other 68k family members use 16x16->32 multiplication */ +#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%.w %2,%1\n" \ +" mulu%.w %3,%0\n" \ +" mulu%.w %2,%3\n" \ +" swap %2\n" \ +" mulu%.w %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" (xh), "=&d" (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 */ +/* The '020, '030, '040 and '060 have bitfield insns. + GCC 3.4 defines __mc68020__ when in CPU32 mode, check for __mcpu32__ to + exclude bfffo on that chip (bitfield insns not available). */ +#if (defined (__mc68020__) || defined (mc68020) \ + || defined (__mc68030__) || defined (mc68030) \ + || defined (__mc68040__) || defined (mc68040) \ + || defined (__mc68060__) || defined (mc68060) \ + || defined (__NeXT__)) \ + && ! defined (__mcpu32__) +#define count_leading_zeros(count, x) \ + __asm__ ("bfffo %1{%b2:%b2},%0" \ + : "=d" (count) \ + : "od" ((USItype) (x)), "n" (0)) +#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" (sh), "=&r" (sl) \ + : "rJ" (ah), "rJ" (bh), "%rJ" (al), "rJ" (bl)) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("subu.co %1,%r4,%r5\n\tsubu.ci %0,%r2,%r3" \ + : "=r" (sh), "=&r" (sl) \ + : "rJ" (ah), "rJ" (bh), "rJ" (al), "rJ" (bl)) +#define count_leading_zeros(count, x) \ + do { \ + USItype __cbtmp; \ + __asm__ ("ff1 %0,%1" : "=r" (__cbtmp) : "r" (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__ */ + +#if defined (__mips) && W_TYPE_SIZE == 32 +#if __GMP_GNUC_PREREQ (4,4) +#define umul_ppmm(w1, w0, u, v) \ + do { \ + UDItype __ll = (UDItype)(u) * (v); \ + w1 = __ll >> 32; \ + w0 = __ll; \ + } while (0) +#endif +#if !defined (umul_ppmm) && __GMP_GNUC_PREREQ (2,7) && !defined (__clang__) +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("multu %2,%3" : "=l" (w0), "=h" (w1) : "d" (u), "d" (v)) +#endif +#if !defined (umul_ppmm) +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("multu %2,%3\n\tmflo %0\n\tmfhi %1" \ + : "=d" (w0), "=d" (w1) : "d" (u), "d" (v)) +#endif +#define UMUL_TIME 10 +#define UDIV_TIME 100 +#endif /* __mips */ + +#if (defined (__mips) && __mips >= 3) && W_TYPE_SIZE == 64 +#if __GMP_GNUC_PREREQ (4,4) +#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) +#endif +#if !defined (umul_ppmm) && __GMP_GNUC_PREREQ (2,7) && !defined (__clang__) +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("dmultu %2,%3" \ + : "=l" (w0), "=h" (w1) \ + : "d" ((UDItype)(u)), "d" ((UDItype)(v))) +#endif +#if !defined (umul_ppmm) +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("dmultu %2,%3\n\tmflo %0\n\tmfhi %1" \ + : "=d" (w0), "=d" (w1) \ + : "d" ((UDItype)(u)), "d" ((UDItype)(v))) +#endif +#define UMUL_TIME 20 +#define UDIV_TIME 140 +#endif /* __mips */ + +#if defined (__mmix__) && W_TYPE_SIZE == 64 +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("MULU %0,%2,%3" : "=r" (w0), "=z" (w1) : "r" (u), "r" (v)) +#endif + +#if defined (__ns32000__) && W_TYPE_SIZE == 32 +#define umul_ppmm(w1, w0, u, v) \ + ({union {UDItype __ll; \ + struct {USItype __l, __h;} __i; \ + } __x; \ + __asm__ ("meid %2,%0" \ + : "=g" (__x.__ll) \ + : "%0" ((USItype)(u)), "g" ((USItype)(v))); \ + (w1) = __x.__i.__h; (w0) = __x.__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; \ + } __x; \ + __x.__i.__h = (n1); __x.__i.__l = (n0); \ + __asm__ ("deid %2,%0" \ + : "=g" (__x.__ll) \ + : "0" (__x.__ll), "g" ((USItype)(d))); \ + (r) = __x.__i.__l; (q) = __x.__i.__h; }) +#define count_trailing_zeros(count,x) \ + do { \ + __asm__ ("ffsd %2,%0" \ + : "=r" (count) \ + : "0" ((USItype) 0), "r" ((USItype) (x))); \ + } while (0) +#endif /* __ns32000__ */ + +/* In the past we had a block of various #defines tested + _ARCH_PPC - AIX + _ARCH_PWR - AIX + __powerpc__ - gcc + __POWERPC__ - BEOS + __ppc__ - Darwin + PPC - old gcc, GNU/Linux, SysV + The plain PPC test was not good for vxWorks, since PPC is defined on all + CPUs there (eg. m68k too), as a constant one is expected to compare + CPU_FAMILY against. + + At any rate, this was pretty unattractive and a bit fragile. The use of + HAVE_HOST_CPU_FAMILY is designed to cut through it all and be sure of + getting the desired effect. + + ENHANCE-ME: We should test _IBMR2 here when we add assembly support for + the system vendor compilers. (Is that vendor compilers with inline asm, + or what?) */ + +#if (HAVE_HOST_CPU_FAMILY_power || HAVE_HOST_CPU_FAMILY_powerpc) \ + && 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 HAVE_HOST_CPU_FAMILY_powerpc +#if __GMP_GNUC_PREREQ (4,4) +#define umul_ppmm(w1, w0, u, v) \ + do { \ + UDItype __ll = (UDItype)(u) * (v); \ + w1 = __ll >> 32; \ + w0 = __ll; \ + } while (0) +#endif +#if !defined (umul_ppmm) +#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) +#endif +#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 +#else +#define UMUL_TIME 8 +#define smul_ppmm(xh, xl, m0, m1) \ + __asm__ ("mul %0,%2,%3" : "=r" (xh), "=q" (xl) : "r" (m0), "r" (m1)) +#define SMUL_TIME 4 +#define sdiv_qrnnd(q, r, nh, nl, d) \ + __asm__ ("div %0,%2,%4" : "=r" (q), "=q" (r) : "r" (nh), "1" (nl), "r" (d)) +#define UDIV_TIME 100 +#endif +#endif /* 32-bit POWER architecture variants. */ + +/* We should test _IBMR2 here when we add assembly support for the system + vendor compilers. */ +#if HAVE_HOST_CPU_FAMILY_powerpc && W_TYPE_SIZE == 64 +#if !defined (_LONG_LONG_LIMB) +/* _LONG_LONG_LIMB is ABI=mode32 where adde operates on 32-bit values. So + use adde etc only when not _LONG_LONG_LIMB. */ +#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" ((UDItype)(ah)), \ + "%r" ((UDItype)(al)), "rI" ((UDItype)(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" ((UDItype)(ah)), \ + "%r" ((UDItype)(al)), "rI" ((UDItype)(bl))); \ + else \ + __asm__ ("add%I5c %1,%4,%5\n\tadde %0,%2,%3" \ + : "=r" (sh), "=&r" (sl) \ + : "r" ((UDItype)(ah)), "r" ((UDItype)(bh)), \ + "%r" ((UDItype)(al)), "rI" ((UDItype)(bl))); \ + } while (0) +/* We use "*rI" for the constant operand here, since with just "I", gcc barfs. + This might seem strange, but gcc folds away the dead code late. */ +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + do { \ + if (__builtin_constant_p (bl) && bl > -0x8000 && bl <= 0x8000) { \ + if (__builtin_constant_p (ah) && (ah) == 0) \ + __asm__ ("addic %1,%3,%4\n\tsubfze %0,%2" \ + : "=r" (sh), "=&r" (sl) \ + : "r" ((UDItype)(bh)), \ + "rI" ((UDItype)(al)), "*rI" (-((UDItype)(bl)))); \ + else if (__builtin_constant_p (ah) && (ah) == ~(UDItype) 0) \ + __asm__ ("addic %1,%3,%4\n\tsubfme %0,%2" \ + : "=r" (sh), "=&r" (sl) \ + : "r" ((UDItype)(bh)), \ + "rI" ((UDItype)(al)), "*rI" (-((UDItype)(bl)))); \ + else if (__builtin_constant_p (bh) && (bh) == 0) \ + __asm__ ("addic %1,%3,%4\n\taddme %0,%2" \ + : "=r" (sh), "=&r" (sl) \ + : "r" ((UDItype)(ah)), \ + "rI" ((UDItype)(al)), "*rI" (-((UDItype)(bl)))); \ + else if (__builtin_constant_p (bh) && (bh) == ~(UDItype) 0) \ + __asm__ ("addic %1,%3,%4\n\taddze %0,%2" \ + : "=r" (sh), "=&r" (sl) \ + : "r" ((UDItype)(ah)), \ + "rI" ((UDItype)(al)), "*rI" (-((UDItype)(bl)))); \ + else \ + __asm__ ("addic %1,%4,%5\n\tsubfe %0,%3,%2" \ + : "=r" (sh), "=&r" (sl) \ + : "r" ((UDItype)(ah)), "r" ((UDItype)(bh)), \ + "rI" ((UDItype)(al)), "*rI" (-((UDItype)(bl)))); \ + } else { \ + if (__builtin_constant_p (ah) && (ah) == 0) \ + __asm__ ("subf%I3c %1,%4,%3\n\tsubfze %0,%2" \ + : "=r" (sh), "=&r" (sl) \ + : "r" ((UDItype)(bh)), \ + "rI" ((UDItype)(al)), "r" ((UDItype)(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" ((UDItype)(bh)), \ + "rI" ((UDItype)(al)), "r" ((UDItype)(bl))); \ + else if (__builtin_constant_p (bh) && (bh) == 0) \ + __asm__ ("subf%I3c %1,%4,%3\n\taddme %0,%2" \ + : "=r" (sh), "=&r" (sl) \ + : "r" ((UDItype)(ah)), \ + "rI" ((UDItype)(al)), "r" ((UDItype)(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" ((UDItype)(ah)), \ + "rI" ((UDItype)(al)), "r" ((UDItype)(bl))); \ + else \ + __asm__ ("subf%I4c %1,%5,%4\n\tsubfe %0,%3,%2" \ + : "=r" (sh), "=&r" (sl) \ + : "r" ((UDItype)(ah)), "r" ((UDItype)(bh)), \ + "rI" ((UDItype)(al)), "r" ((UDItype)(bl))); \ + } \ + } while (0) +#endif /* ! _LONG_LONG_LIMB */ +#define count_leading_zeros(count, x) \ + __asm__ ("cntlzd %0,%1" : "=r" (count) : "r" (x)) +#define COUNT_LEADING_ZEROS_0 64 +#if 0 && __GMP_GNUC_PREREQ (4,4) /* Disable, this results in libcalls! */ +#define umul_ppmm(w1, w0, u, v) \ + do { \ + typedef unsigned int __ll_UTItype __attribute__((mode(TI))); \ + __ll_UTItype __ll = (__ll_UTItype)(u) * (v); \ + w1 = __ll >> 64; \ + w0 = __ll; \ + } while (0) +#endif +#if !defined (umul_ppmm) +#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) +#endif +#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 (__pyr__) && W_TYPE_SIZE == 32 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("addw %5,%1\n\taddwc %3,%0" \ + : "=r" (sh), "=&r" (sl) \ + : "0" ((USItype)(ah)), "g" ((USItype)(bh)), \ + "%1" ((USItype)(al)), "g" ((USItype)(bl))) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("subw %5,%1\n\tsubwb %3,%0" \ + : "=r" (sh), "=&r" (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; \ + } __x; \ + __asm__ ("movw %1,%R0\n\tuemul %2,%0" \ + : "=&r" (__x.__ll) \ + : "g" ((USItype) (u)), "g" ((USItype)(v))); \ + (w1) = __x.__i.__h; (w0) = __x.__i.__l;}) +#endif /* __pyr__ */ + +#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" (sh), "=&r" (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" (sh), "=&r" (sl) \ + : "0" ((USItype)(ah)), "r" ((USItype)(bh)), \ + "1" ((USItype)(al)), "r" ((USItype)(bl))) +#define smul_ppmm(ph, pl, m0, 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" (ph), "=r" (pl) \ + : "%r" ((USItype)(m0)), "r" ((USItype)(m1)) \ + : "r2") +#define UMUL_TIME 20 +#define UDIV_TIME 200 +#define count_leading_zeros(count, x) \ + do { \ + if ((x) >= 0x10000) \ + __asm__ ("clz %0,%1" \ + : "=r" (count) : "r" ((USItype)(x) >> 16)); \ + else \ + { \ + __asm__ ("clz %0,%1" \ + : "=r" (count) : "r" ((USItype)(x))); \ + (count) += 16; \ + } \ + } while (0) +#endif /* RT/ROMP */ + +#if (defined (__SH2__) || defined (__SH3__) || defined (__SH4__)) && W_TYPE_SIZE == 32 +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("dmulu.l %2,%3\n\tsts macl,%1\n\tsts mach,%0" \ + : "=r" (w1), "=r" (w0) : "r" (u), "r" (v) : "macl", "mach") +#define UMUL_TIME 5 +#endif + +#if defined (__sparc__) && W_TYPE_SIZE == 32 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("addcc %r4,%5,%1\n\taddx %r2,%3,%0" \ + : "=r" (sh), "=&r" (sl) \ + : "rJ" (ah), "rI" (bh),"%rJ" (al), "rI" (bl) \ + __CLOBBER_CC) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ("subcc %r4,%5,%1\n\tsubx %r2,%3,%0" \ + : "=r" (sh), "=&r" (sl) \ + : "rJ" (ah), "rI" (bh), "rJ" (al), "rI" (bl) \ + __CLOBBER_CC) +/* FIXME: When gcc -mcpu=v9 is used on solaris, gcc/config/sol2-sld-64.h + doesn't define anything to indicate that to us, it only sets __sparcv8. */ +#if defined (__sparc_v9__) || defined (__sparcv9) +/* Perhaps we should use floating-point operations here? */ +#if 0 +/* Triggers a bug making mpz/tests/t-gcd.c fail. + Perhaps we simply need explicitly zero-extend the inputs? */ +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("mulx %2,%3,%%g1; srl %%g1,0,%1; srlx %%g1,32,%0" : \ + "=r" (w1), "=r" (w0) : "r" (u), "r" (v) : "g1") +#else +/* Use v8 umul until above bug is fixed. */ +#define umul_ppmm(w1, w0, u, v) \ + __asm__ ("umul %2,%3,%1;rd %%y,%0" : "=r" (w1), "=r" (w0) : "r" (u), "r" (v)) +#endif +/* Use a plain v8 divide for v9. */ +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { \ + USItype __q; \ + __asm__ ("mov %1,%%y;nop;nop;nop;udiv %2,%3,%0" \ + : "=r" (__q) : "r" (n1), "r" (n0), "r" (d)); \ + (r) = (n0) - __q * (d); \ + (q) = __q; \ + } while (0) +#else +#if defined (__sparc_v8__) /* gcc normal */ \ + || defined (__sparcv8) /* gcc solaris */ \ + || HAVE_HOST_CPU_supersparc +/* 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" (w1), "=r" (w0) : "r" (u), "r" (v)) +#define UMUL_TIME 5 + +#if HAVE_HOST_CPU_supersparc +#define UDIV_TIME 60 /* SuperSPARC timing */ +#else +/* Don't use this on SuperSPARC because its udiv only handles 53 bit + dividends and will trap to the kernel for the rest. */ +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { \ + USItype __q; \ + __asm__ ("mov %1,%%y;nop;nop;nop;udiv %2,%3,%0" \ + : "=r" (__q) : "r" (n1), "r" (n0), "r" (d)); \ + (r) = (n0) - __q * (d); \ + (q) = __q; \ + } while (0) +#define UDIV_TIME 25 +#endif /* HAVE_HOST_CPU_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" (w1), "=r" (w0) : "r" (u), "r" (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" (q), "=r" (r) : "r" (n1), "r" (n0), "rI" (d) \ + : "%g1" __AND_CLOBBER_CC) +#define UDIV_TIME 37 +#define count_leading_zeros(count, x) \ + __asm__ ("scan %1,1,%0" : "=r" (count) : "r" (x)) +/* 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__ */ +#endif /* __sparc_v9__ */ +/* 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" (w1), "=r" (w0) : "%rI" (u), "r" (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 { UWtype __r; \ + (q) = __MPN(udiv_qrnnd) (&__r, (n1), (n0), (d)); \ + (r) = __r; \ + } while (0) +extern UWtype __MPN(udiv_qrnnd) (UWtype *, UWtype, UWtype, UWtype); +#ifndef UDIV_TIME +#define UDIV_TIME 140 +#endif +#endif /* LONGLONG_STANDALONE */ +#endif /* udiv_qrnnd */ +#endif /* __sparc__ */ + +#if defined (__sparc__) && W_TYPE_SIZE == 64 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ( \ + "addcc %r4,%5,%1\n" \ + " addccc %r6,%7,%%g0\n" \ + " addc %r2,%3,%0" \ + : "=r" (sh), "=&r" (sl) \ + : "rJ" ((UDItype)(ah)), "rI" ((UDItype)(bh)), \ + "%rJ" ((UDItype)(al)), "rI" ((UDItype)(bl)), \ + "%rJ" ((UDItype)(al) >> 32), "rI" ((UDItype)(bl) >> 32) \ + __CLOBBER_CC) +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ + __asm__ ( \ + "subcc %r4,%5,%1\n" \ + " subccc %r6,%7,%%g0\n" \ + " subc %r2,%3,%0" \ + : "=r" (sh), "=&r" (sl) \ + : "rJ" ((UDItype)(ah)), "rI" ((UDItype)(bh)), \ + "rJ" ((UDItype)(al)), "rI" ((UDItype)(bl)), \ + "rJ" ((UDItype)(al) >> 32), "rI" ((UDItype)(bl) >> 32) \ + __CLOBBER_CC) +#if __VIS__ >= 0x300 +#undef add_ssaaaa +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ( \ + "addcc %r4, %5, %1\n" \ + " addxc %r2, %r3, %0" \ + : "=r" (sh), "=&r" (sl) \ + : "rJ" ((UDItype)(ah)), "rJ" ((UDItype)(bh)), \ + "%rJ" ((UDItype)(al)), "rI" ((UDItype)(bl)) __CLOBBER_CC) +#define umul_ppmm(ph, pl, m0, m1) \ + do { \ + UDItype __m0 = (m0), __m1 = (m1); \ + (pl) = __m0 * __m1; \ + __asm__ ("umulxhi\t%2, %1, %0" \ + : "=r" (ph) \ + : "%r" (__m0), "r" (__m1)); \ + } while (0) +#define count_leading_zeros(count, x) \ + __asm__ ("lzd\t%1,%0" : "=r" (count) : "r" (x)) +/* Needed by count_leading_zeros_32 in sparc64.h. */ +#define COUNT_LEADING_ZEROS_NEED_CLZ_TAB +#endif +#endif + +#if (defined (__vax) || defined (__vax__)) && W_TYPE_SIZE == 32 +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ + __asm__ ("addl2 %5,%1\n\tadwc %3,%0" \ + : "=g" (sh), "=&g" (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" (sh), "=&g" (sl) \ + : "0" ((USItype)(ah)), "g" ((USItype)(bh)), \ + "1" ((USItype)(al)), "g" ((USItype)(bl))) +#define smul_ppmm(xh, xl, m0, m1) \ + do { \ + union {UDItype __ll; \ + struct {USItype __l, __h;} __i; \ + } __x; \ + USItype __m0 = (m0), __m1 = (m1); \ + __asm__ ("emul %1,%2,$0,%0" \ + : "=g" (__x.__ll) : "g" (__m0), "g" (__m1)); \ + (xh) = __x.__i.__h; (xl) = __x.__i.__l; \ + } while (0) +#define sdiv_qrnnd(q, r, n1, n0, d) \ + do { \ + union {DItype __ll; \ + struct {SItype __l, __h;} __i; \ + } __x; \ + __x.__i.__h = n1; __x.__i.__l = n0; \ + __asm__ ("ediv %3,%2,%0,%1" \ + : "=g" (q), "=g" (r) : "g" (__x.__ll), "g" (d)); \ + } while (0) +#if 0 +/* FIXME: This instruction appears to be unimplemented on some systems (vax + 8800 maybe). */ +#define count_trailing_zeros(count,x) \ + do { \ + __asm__ ("ffs 0, 31, %1, %0" \ + : "=g" (count) \ + : "g" ((USItype) (x))); \ + } while (0) +#endif +#endif /* vax */ + +#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" (sh), "=&r" (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" (sh), "=&r" (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; \ + } __x; \ + unsigned int __m0 = (m0), __m1 = (m1); \ + __asm__ ("mult %S0,%H3" \ + : "=r" (__x.__i.__h), "=r" (__x.__i.__l) \ + : "%1" (m0), "rQR" (m1)); \ + (xh) = __x.__i.__h; (xl) = __x.__i.__l; \ + (xh) += ((((signed int) __m0 >> 15) & __m1) \ + + (((signed int) __m1 >> 15) & __m0)); \ + } while (0) +#endif /* __z8000__ */ + +#endif /* __GNUC__ */ + +#endif /* NO_ASM */ + + +/* FIXME: "sidi" here is highly doubtful, should sometimes be "diti". */ +#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 defined (__cplusplus) +#define __longlong_h_C "C" +#else +#define __longlong_h_C +#endif + +/* Use mpn_umul_ppmm or mpn_udiv_qrnnd functions, if they exist. The "_r" + forms have "reversed" arguments, meaning the pointer is last, which + sometimes allows better parameter passing, in particular on 64-bit + hppa. */ + +#define mpn_umul_ppmm __MPN(umul_ppmm) +extern __longlong_h_C UWtype mpn_umul_ppmm (UWtype *, UWtype, UWtype); + +#if ! defined (umul_ppmm) && HAVE_NATIVE_mpn_umul_ppmm \ + && ! defined (LONGLONG_STANDALONE) +#define umul_ppmm(wh, wl, u, v) \ + do { \ + UWtype __umul_ppmm__p0; \ + (wh) = mpn_umul_ppmm (&__umul_ppmm__p0, (UWtype) (u), (UWtype) (v));\ + (wl) = __umul_ppmm__p0; \ + } while (0) +#endif + +#define mpn_umul_ppmm_r __MPN(umul_ppmm_r) +extern __longlong_h_C UWtype mpn_umul_ppmm_r (UWtype, UWtype, UWtype *); + +#if ! defined (umul_ppmm) && HAVE_NATIVE_mpn_umul_ppmm_r \ + && ! defined (LONGLONG_STANDALONE) +#define umul_ppmm(wh, wl, u, v) \ + do { \ + UWtype __umul_p0; \ + (wh) = mpn_umul_ppmm_r ((UWtype) (u), (UWtype) (v), &__umul_p0); \ + (wl) = __umul_p0; \ + } while (0) +#endif + +#define mpn_udiv_qrnnd __MPN(udiv_qrnnd) +extern __longlong_h_C UWtype mpn_udiv_qrnnd (UWtype *, UWtype, UWtype, UWtype); + +#if ! defined (udiv_qrnnd) && HAVE_NATIVE_mpn_udiv_qrnnd \ + && ! defined (LONGLONG_STANDALONE) +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { \ + UWtype __udiv_qrnnd_r; \ + (q) = mpn_udiv_qrnnd (&__udiv_qrnnd_r, \ + (UWtype) (n1), (UWtype) (n0), (UWtype) d); \ + (r) = __udiv_qrnnd_r; \ + } while (0) +#endif + +#define mpn_udiv_qrnnd_r __MPN(udiv_qrnnd_r) +extern __longlong_h_C UWtype mpn_udiv_qrnnd_r (UWtype, UWtype, UWtype, UWtype *); + +#if ! defined (udiv_qrnnd) && HAVE_NATIVE_mpn_udiv_qrnnd_r \ + && ! defined (LONGLONG_STANDALONE) +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { \ + UWtype __udiv_qrnnd_r; \ + (q) = mpn_udiv_qrnnd_r ((UWtype) (n1), (UWtype) (n0), (UWtype) d, \ + &__udiv_qrnnd_r); \ + (r) = __udiv_qrnnd_r; \ + } while (0) +#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) - ((al) < (bl)); \ + (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. + + For reference, when this code is used for squaring (ie. u and v identical + expressions), gcc recognises __x1 and __x2 are the same and generates 3 + multiplies, not 4. The subsequent additions could be optimized a bit, + but the only place GMP currently uses such a square is mpn_sqr_basecase, + and chips obliged to use this generic C umul will have plenty of worse + performance problems than a couple of extra instructions on the diagonal + of sqr_basecase. */ + +#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) = (__x1 << W_TYPE_SIZE/2) + __ll_lowpart (__x0); \ + } while (0) +#endif + +/* If we don't have smul_ppmm, define it using umul_ppmm (which surely will + exist in one form or another. */ +#if !defined (smul_ppmm) +#define smul_ppmm(w1, w0, u, v) \ + do { \ + UWtype __w1; \ + UWtype __xm0 = (u), __xm1 = (v); \ + umul_ppmm (__w1, w0, __xm0, __xm1); \ + (w1) = __w1 - (-(__xm0 >> (W_TYPE_SIZE - 1)) & __xm1) \ + - (-(__xm1 >> (W_TYPE_SIZE - 1)) & __xm0); \ + } 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; \ + \ + ASSERT ((d) != 0); \ + ASSERT ((n1) < (d)); \ + \ + __d1 = __ll_highpart (d); \ + __d0 = __ll_lowpart (d); \ + \ + __q1 = (n1) / __d1; \ + __r1 = (n1) - __q1 * __d1; \ + __m = __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; \ + \ + __q0 = __r1 / __d1; \ + __r0 = __r1 - __q0 * __d1; \ + __m = __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) = __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) +__GMP_DECLSPEC UWtype __MPN(udiv_w_sdiv) (UWtype *, UWtype, UWtype, UWtype); +#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) ? 1 : __BITS4 + 1) \ + : (__xr < ((UWtype) 1 << 3*__BITS4) ? 2*__BITS4 + 1 \ + : 3*__BITS4 + 1); \ + } \ + else \ + { \ + for (__a = W_TYPE_SIZE - 8; __a > 0; __a -= 8) \ + if (((__xr >> __a) & 0xff) != 0) \ + break; \ + ++__a; \ + } \ + \ + (count) = W_TYPE_SIZE + 1 - __a - __clz_tab[__xr >> __a]; \ + } while (0) +/* This version gives a well-defined value for zero. */ +#define COUNT_LEADING_ZEROS_0 (W_TYPE_SIZE - 1) +#define COUNT_LEADING_ZEROS_NEED_CLZ_TAB +#define COUNT_LEADING_ZEROS_SLOW +#endif + +/* clz_tab needed by mpn/x86/pentium/mod_1.asm in a fat binary */ +#if HAVE_HOST_CPU_FAMILY_x86 && WANT_FAT_BINARY +#define COUNT_LEADING_ZEROS_NEED_CLZ_TAB +#endif + +#ifdef COUNT_LEADING_ZEROS_NEED_CLZ_TAB +extern const unsigned char __GMP_DECLSPEC __clz_tab[129]; +#endif + +#if !defined (count_trailing_zeros) +#if !defined (COUNT_LEADING_ZEROS_SLOW) +/* Define count_trailing_zeros using an asm count_leading_zeros. */ +#define count_trailing_zeros(count, x) \ + do { \ + UWtype __ctz_x = (x); \ + UWtype __ctz_c; \ + ASSERT (__ctz_x != 0); \ + count_leading_zeros (__ctz_c, __ctz_x & -__ctz_x); \ + (count) = W_TYPE_SIZE - 1 - __ctz_c; \ + } while (0) +#else +/* Define count_trailing_zeros in plain C, assuming small counts are common. + We use clz_tab without ado, since the C count_leading_zeros above will have + pulled it in. */ +#define count_trailing_zeros(count, x) \ + do { \ + UWtype __ctz_x = (x); \ + int __ctz_c; \ + \ + if (LIKELY ((__ctz_x & 0xff) != 0)) \ + (count) = __clz_tab[__ctz_x & -__ctz_x] - 2; \ + else \ + { \ + for (__ctz_c = 8 - 2; __ctz_c < W_TYPE_SIZE - 2; __ctz_c += 8) \ + { \ + __ctz_x >>= 8; \ + if (LIKELY ((__ctz_x & 0xff) != 0)) \ + break; \ + } \ + \ + (count) = __ctz_c + __clz_tab[__ctz_x & -__ctz_x]; \ + } \ + } while (0) +#endif +#endif + +#ifndef UDIV_NEEDS_NORMALIZATION +#define UDIV_NEEDS_NORMALIZATION 0 +#endif + +/* Whether udiv_qrnnd is actually implemented with udiv_qrnnd_preinv, and + that hence the latter should always be used. */ +#ifndef UDIV_PREINV_ALWAYS +#define UDIV_PREINV_ALWAYS 0 +#endif + +/* Give defaults for UMUL_TIME and UDIV_TIME. */ +#ifndef UMUL_TIME +#define UMUL_TIME 1 +#endif + +#ifndef UDIV_TIME +#define UDIV_TIME UMUL_TIME +#endif |