148 lines
4.9 KiB
C
148 lines
4.9 KiB
C
/* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
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Copyright 1991, 1992, 1993, 1994, 1996, 1997, 1999, 2000, 2001, 2002, 2003,
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2004, 2005 Free Software Foundation, Inc.
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Copyright 2013 William Hart
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This file is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this file; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#if defined(__ICL)
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#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
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__asm__ ("addq %5,%q1\n\tadcq %3,%q0" \
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: "=r" (sh), "=&r" (sl) \
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: "0" ((UDItype)(ah)), "rme" ((UDItype)(bh)), \
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"%1" ((UDItype)(al)), "rme" ((UDItype)(bl)))
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#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
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__asm__ ("subq %5,%q1\n\tsbbq %3,%q0" \
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: "=r" (sh), "=&r" (sl) \
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: "0" ((UDItype)(ah)), "rme" ((UDItype)(bh)), \
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"1" ((UDItype)(al)), "rme" ((UDItype)(bl)))
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#define umul_ppmm(w1, w0, u, v) \
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__asm__ ("mulq %3" \
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: "=a" (w0), "=d" (w1) \
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: "%0" ((UDItype)(u)), "rm" ((UDItype)(v)))
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#define udiv_qrnnd(q, r, n1, n0, dx) /* d renamed to dx avoiding "=d" */\
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__asm__ ("divq %4" /* stringification in K&R C */ \
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: "=a" (q), "=d" (r) \
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: "0" ((UDItype)(n0)), "1" ((UDItype)(n1)), "rm" ((UDItype)(dx)))
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#define add_333(sh, sm, sl, ah, am, al, bh, bm, bl) \
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__asm__ ("addq %8,%q2\n\tadcq %6,%q1\n\tadcq %4,%q0" \
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: "=r" (sh), "=r" (sm), "=&r" (sl) \
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: "0" ((UDItype)(ah)), "rme" ((UDItype)(bh)), \
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"1" ((UDItype)(am)), "rme" ((UDItype)(bm)), \
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"2" ((UDItype)(al)), "rme" ((UDItype)(bl)))
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#define sub_333(sh, sm, sl, ah, am, al, bh, bm, bl) \
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__asm__ ("subq %8,%q2\n\tsbbq %6,%q1\n\tsbbq %4,%q0" \
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: "=r" (sh), "=r" (sm), "=&r" (sl) \
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: "0" ((UDItype)(ah)), "rme" ((UDItype)(bh)), \
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"1" ((UDItype)(am)), "rme" ((UDItype)(bm)), \
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"2" ((UDItype)(al)), "rme" ((UDItype)(bl)))
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/* bsrq destination must be a 64-bit register, hence UDItype for __cbtmp. */
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#define count_leading_zeros(count, x) \
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do { \
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UDItype __cbtmp; \
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ASSERT ((x) != 0); \
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__asm__ ("bsrq %1,%0" : "=r" (__cbtmp) : "rm" ((UDItype)(x))); \
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(count) = __cbtmp ^ 63; \
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} while (0)
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/* bsfq destination must be a 64-bit register, "%q0" forces this in case
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count is only an int. */
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#define count_trailing_zeros(count, x) \
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do { \
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ASSERT ((x) != 0); \
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__asm__ ("bsfq %1,%q0" : "=r" (count) : "rm" ((UDItype)(x))); \
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} while (0)
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#endif
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#if !defined(BSWAP_LIMB) && defined (__GNUC__)
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#define BSWAP_LIMB(dst, src) \
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do { \
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__asm__ ("bswap %q0" : "=r" (dst) : "0" (src)); \
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} while (0)
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#endif
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#if defined( _MSC_VER )
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#include <intrin.h>
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#if !defined( COUNT_LEADING_ZEROS_NEED_CLZ_TAB )
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# define COUNT_LEADING_ZEROS_NEED_CLZ_TAB
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#endif
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#if defined( _WIN64 )
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#if !defined(count_leading_zeros)
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# pragma intrinsic(_BitScanReverse64)
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# define count_leading_zeros(c,x) \
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do { unsigned long _z; \
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ASSERT ((x) != 0); \
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_BitScanReverse64(&_z, (x)); \
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c = 63 - _z; \
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} while (0)
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#endif
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#if !defined(count_trailing_zeros)
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# pragma intrinsic(_BitScanForward64)
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# define count_trailing_zeros(c,x) \
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do { unsigned long _z; \
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ASSERT ((x) != 0); \
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_BitScanForward64(&_z, (x)); \
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c = _z; \
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} while (0)
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#endif
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#if !defined(umul_ppmm)
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# pragma intrinsic(_umul128)
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# define umul_ppmm(xh, xl, m0, m1) \
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do { \
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xl = _umul128( (m0), (m1), &xh); \
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} while (0)
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#endif
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#if !defined( BSWAP_LIMB )
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# pragma intrinsic(_byteswap_uint64)
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# define BSWAP_LIMB(dst, src) dst = _byteswap_uint64(src)
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#endif
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#endif /* _WIN64 */
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#if 0 /* trial re-definition of C versions */
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#define add_333(sh, sm, sl, ah, am, al, bh, bm, bl) \
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do { \
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UWtype _cy; \
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(sl) = (al) + (bl); \
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_cy = (sl) < (bl) ? 1 : 0; \
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(sm) = (am) + (bm) + _cy; \
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_cy = (sm) < (bm) ? 1 : (sm) > (bm) ? 0 : _cy; \
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(sh) = (ah) + (bh) + _cy; \
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} while (0)
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#define sub_333(sh, sm, sl, ah, am, al, bh, bm, bl) \
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do { \
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UWtype _bw; \
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(sl) = (al) - (bl); \
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_bw = (sl) > (al) ? 1 : 0; \
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(sm) = (am) - (bm) - _bw; \
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_bw = (sm) > (am) ? 1 : (sm) < (am) ? 0 : _bw; \
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(sh) = (ah) - (bh) - _bw; \
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} while (0)
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#endif
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#endif /* _MSC_VER */
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