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Initial Spring 2016 commit.

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Geoffrey Challen
2015-12-23 00:50:04 +00:00
commit cafa9f5690
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7
common/gcc-millicode/README Normal file
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These are support functions needed by gcc to perform operations on
64-bit integer types on 32-bit machines. The names are meaningful to
the gcc back end. The term "millicode" is sometimes used to describe
such compiler support code.
This code was taken from NetBSD's src/common/lib/libc/quad, and
polished some for OS/161.

56
common/gcc-millicode/adddi3.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)adddi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: adddi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Add two long longs. This is trivial since a one-bit carry from a
* single unsigned int addition x+y occurs if and only if the sum x+y
* is less than either x or y (the choice to compare with x or y is
* arbitrary).
*/
long long
__adddi3(long long a, long long b)
{
union uu aa, bb, sum;
aa.ll = a;
bb.ll = b;
sum.ui[L] = aa.ui[L] + bb.ui[L];
sum.ui[H] = aa.ui[H] + bb.ui[H] + (sum.ui[L] < bb.ui[L]);
return (sum.ll);
}

53
common/gcc-millicode/anddi3.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)anddi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: anddi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Return a & b, in long long.
*/
long long
__anddi3(long long a, long long b)
{
union uu aa, bb;
aa.ll = a;
bb.ll = b;
aa.ui[0] &= bb.ui[0];
aa.ui[1] &= bb.ui[1];
return (aa.ll);
}

61
common/gcc-millicode/ashldi3.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)ashldi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: ashldi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Shift a (signed) long long value left (arithmetic shift left).
* This is the same as logical shift left!
*/
long long
__ashldi3(long long a, unsigned int shift)
{
union uu aa;
if (shift == 0)
return(a);
aa.ll = a;
if (shift >= INT_BITS) {
aa.ui[H] = aa.ui[L] << (shift - INT_BITS);
aa.ui[L] = 0;
} else {
aa.ui[H] = (aa.ui[H] << shift) |
(aa.ui[L] >> (INT_BITS - shift));
aa.ui[L] <<= shift;
}
return (aa.ll);
}

73
common/gcc-millicode/ashrdi3.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)ashrdi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: ashrdi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Shift a (signed) long long value right (arithmetic shift right).
*/
long long
__ashrdi3(long long a, unsigned int shift)
{
union uu aa;
if (shift == 0)
return(a);
aa.ll = a;
if (shift >= INT_BITS) {
int s;
/*
* Smear bits rightward using the machine's right-shift
* method, whether that is sign extension or zero fill,
* to get the `sign word' s. Note that shifting by
* INT_BITS is undefined, so we shift (INT_BITS-1),
* then 1 more, to get our answer.
*/
/* LINTED inherits machine dependency */
s = (aa.si[H] >> (INT_BITS - 1)) >> 1;
/* LINTED inherits machine dependency*/
aa.ui[L] = aa.si[H] >> (shift - INT_BITS);
aa.ui[H] = s;
} else {
aa.ui[L] = (aa.ui[L] >> shift) |
(aa.ui[H] << (INT_BITS - shift));
/* LINTED inherits machine dependency */
aa.si[H] >>= shift;
}
return (aa.ll);
}

54
common/gcc-millicode/cmpdi2.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)cmpdi2.c 8.1 (Berkeley) 6/4/93
* NetBSD: cmpdi2.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Return 0, 1, or 2 as a <, =, > b respectively.
* Both a and b are considered signed---which means only the high word is
* signed.
*/
int
__cmpdi2(long long a, long long b)
{
union uu aa, bb;
aa.ll = a;
bb.ll = b;
return (aa.si[H] < bb.si[H] ? 0 : aa.si[H] > bb.si[H] ? 2 :
aa.ui[L] < bb.ui[L] ? 0 : aa.ui[L] > bb.ui[L] ? 2 : 1);
}

62
common/gcc-millicode/divdi3.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)divdi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: divdi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Divide two signed long longs.
* ??? if -1/2 should produce -1 on this machine, this code is wrong
*/
long long
__divdi3(long long a, long long b)
{
unsigned long long ua, ub, uq;
int neg = 0;
ua = a;
ub = b;
if (a < 0)
ua = -ua, neg ^= 1;
if (b < 0)
ub = -ub, neg ^= 1;
uq = __qdivrem(ua, ub, NULL);
if (neg)
uq = - uq;
return uq;
}

53
common/gcc-millicode/iordi3.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)iordi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: iordi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Return a | b, in long long.
*/
long long
__iordi3(long long a, long long b)
{
union uu aa, bb;
aa.ll = a;
bb.ll = b;
aa.ui[0] |= bb.ui[0];
aa.ui[1] |= bb.ui[1];
return (aa.ll);
}

144
common/gcc-millicode/longlong.h Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)quad.h 8.1 (Berkeley) 6/4/93
* NetBSD: quad.h,v 1.1 2005/12/20 20:29:40 christos Exp
*/
/*
* Long long arithmetic.
*
* This library makes the following assumptions:
*
* - The type long long exists.
*
* - A long long variable is exactly twice as long as `int'.
*
* - The machine's arithmetic is two's complement.
*
* This library can provide 128-bit arithmetic on a machine with
* 128-bit long longs and 64-bit ints, for instance, or 96-bit
* arithmetic on machines with 48-bit ints.
*
* The names are built into gcc.
*/
#if defined(_KERNEL)
#include <types.h>
#include <endian.h>
#else
#include <sys/types.h>
#include <sys/endian.h>
#endif
#include <limits.h>
/*
* Depending on the desired operation, we view a `long long' in
* one or more of the following formats.
*/
union uu {
long long ll; /* as a (signed) long long */
unsigned long long ull; /* as an unsigned long long */
int si[2]; /* as two (signed) ints */
unsigned int ui[2]; /* as two unsigned ints */
};
/*
* Define high and low parts of a long long.
*/
#if _BYTE_ORDER == _LITTLE_ENDIAN
#define H 1
#define L 0
#endif
#if _BYTE_ORDER == _BIG_ENDIAN
#define H 0
#define L 1
#endif
/*
* Total number of bits in a long long and in the pieces that make it up.
* These are used for shifting, and also below for halfword extraction
* and assembly.
*/
#define LONGLONG_BITS (sizeof(long long) * CHAR_BIT)
#define INT_BITS (sizeof(int) * CHAR_BIT)
#define HALF_BITS (sizeof(int) * CHAR_BIT / 2)
/*
* Extract high and low shortwords from longword, and move low shortword of
* longword to upper half of long, i.e., produce the upper longword of
* ((long long)(x) << (number_of_bits_in_int/2)).
* [`x' must actually be unsigned int.]
*
* These are used in the multiply code, to split a longword into upper
* and lower halves, and to reassemble a product as a long long, shifted
* left (sizeof(int)*CHAR_BIT/2).
*/
#define HHALF(x) ((unsigned int)(x) >> HALF_BITS)
#define LHALF(x) ((unsigned int)(x) & (((int)1 << HALF_BITS) - 1))
#define LHUP(x) ((unsigned int)(x) << HALF_BITS)
long long __adddi3 ( long long, long long);
long long __anddi3 ( long long, long long);
long long __ashldi3 ( long long, unsigned int);
long long __ashrdi3 ( long long, unsigned int);
int __cmpdi2 ( long long, long long);
long long __divdi3 ( long long, long long);
long long __iordi3 ( long long, long long);
long long __lshldi3 ( long long, unsigned int);
long long __lshrdi3 ( long long, unsigned int);
long long __moddi3 ( long long, long long);
long long __muldi3 ( long long, long long);
long long __negdi2 ( long long);
long long __one_cmpldi2 ( long long);
long long __subdi3 ( long long, long long);
int __ucmpdi2 (unsigned long long, unsigned long long);
unsigned long long __udivdi3 (unsigned long long, unsigned long long);
unsigned long long __umoddi3 (unsigned long long, unsigned long long);
long long __xordi3 ( long long, long long);
#ifndef _KERNEL
long long __fixdfdi (double);
long long __fixsfdi (float);
unsigned long long __fixunsdfdi (double);
unsigned long long __fixunssfdi (float);
double __floatdidf (long long);
float __floatdisf (long long);
double __floatunsdidf(unsigned long long);
#endif
unsigned long long __qdivrem (unsigned long long, unsigned long long,
unsigned long long *);

61
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)lshldi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: lshldi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Shift an (unsigned) long long value left (logical shift left).
* This is the same as arithmetic shift left!
*/
long long
__lshldi3(long long a, unsigned int shift)
{
union uu aa;
if (shift == 0)
return(a);
aa.ll = a;
if (shift >= INT_BITS) {
aa.ui[H] = aa.ui[L] << (shift - INT_BITS);
aa.ui[L] = 0;
} else {
aa.ui[H] = (aa.ui[H] << shift) |
(aa.ui[L] >> (INT_BITS - shift));
aa.ui[L] <<= shift;
}
return (aa.ll);
}

60
common/gcc-millicode/lshrdi3.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)lshrdi3.c 8.1 (Berkeley) 6/4/93
* $NetBSD: lshrdi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Shift an (unsigned) long long value right (logical shift right).
*/
long long
__lshrdi3(long long a, unsigned int shift)
{
union uu aa;
if (shift == 0)
return(a);
aa.ll = a;
if (shift >= INT_BITS) {
aa.ui[L] = aa.ui[H] >> (shift - INT_BITS);
aa.ui[H] = 0;
} else {
aa.ui[L] = (aa.ui[L] >> shift) |
(aa.ui[H] << (INT_BITS - shift));
aa.ui[H] >>= shift;
}
return (aa.ll);
}

62
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)moddi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: moddi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Return remainder after dividing two signed long longs.
*
* XXX we assume a % b < 0 iff a < 0, but this is actually machine-dependent.
*/
long long
__moddi3(long long a, long long b)
{
unsigned long long ua, ub, ur;
int neg = 0;
ua = a;
ub = b;
if (a < 0)
ua = -ua, neg ^= 1;
if (b < 0)
ub = -ub;
(void)__qdivrem(ua, ub, &ur);
if (neg)
ur = -ur;
return (ur);
}

241
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)muldi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: muldi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Multiply two long longs.
*
* Our algorithm is based on the following. Split incoming long long
* values u and v (where u,v >= 0) into
*
* u = 2^n u1 * u0 (n = number of bits in `unsigned int', usu. 32)
*
* and
*
* v = 2^n v1 * v0
*
* Then
*
* uv = 2^2n u1 v1 + 2^n u1 v0 + 2^n v1 u0 + u0 v0
* = 2^2n u1 v1 + 2^n (u1 v0 + v1 u0) + u0 v0
*
* Now add 2^n u1 v1 to the first term and subtract it from the middle,
* and add 2^n u0 v0 to the last term and subtract it from the middle.
* This gives:
*
* uv = (2^2n + 2^n) (u1 v1) +
* (2^n) (u1 v0 - u1 v1 + u0 v1 - u0 v0) +
* (2^n + 1) (u0 v0)
*
* Factoring the middle a bit gives us:
*
* uv = (2^2n + 2^n) (u1 v1) + [u1v1 = high]
* (2^n) (u1 - u0) (v0 - v1) + [(u1-u0)... = mid]
* (2^n + 1) (u0 v0) [u0v0 = low]
*
* The terms (u1 v1), (u1 - u0) (v0 - v1), and (u0 v0) can all be done
* in just half the precision of the original. (Note that either or both
* of (u1 - u0) or (v0 - v1) may be negative.)
*
* This algorithm is from Knuth vol. 2 (2nd ed), section 4.3.3, p. 278.
*
* Since C does not give us a `int * int = long long' operator, we split
* our input long longs into two ints, then split the two ints into two
* shorts. We can then calculate `short * short = int' in native
* arithmetic.
*
* Our product should, strictly speaking, be a `long long long', with
* 128 bits, but we are going to discard the upper 64. In other words,
* we are not interested in uv, but rather in (uv mod 2^2n). This
* makes some of the terms above vanish, and we get:
*
* (2^n)(high) + (2^n)(mid) + (2^n + 1)(low)
*
* or
*
* (2^n)(high + mid + low) + low
*
* Furthermore, `high' and `mid' can be computed mod 2^n, as any factor
* of 2^n in either one will also vanish. Only `low' need be computed
* mod 2^2n, and only because of the final term above.
*/
static long long __lmulq(unsigned int, unsigned int);
long long
__muldi3(long long a, long long b)
{
union uu u, v, low, prod;
unsigned int high, mid, udiff, vdiff;
int negall, negmid;
#define u1 u.ui[H]
#define u0 u.ui[L]
#define v1 v.ui[H]
#define v0 v.ui[L]
/*
* Get u and v such that u, v >= 0. When this is finished,
* u1, u0, v1, and v0 will be directly accessible through the
* int fields.
*/
if (a >= 0)
u.ll = a, negall = 0;
else
u.ll = -a, negall = 1;
if (b >= 0)
v.ll = b;
else
v.ll = -b, negall ^= 1;
if (u1 == 0 && v1 == 0) {
/*
* An (I hope) important optimization occurs when u1 and v1
* are both 0. This should be common since most numbers
* are small. Here the product is just u0*v0.
*/
prod.ll = __lmulq(u0, v0);
} else {
/*
* Compute the three intermediate products, remembering
* whether the middle term is negative. We can discard
* any upper bits in high and mid, so we can use native
* unsigned int * unsigned int => unsigned int arithmetic.
*/
low.ll = __lmulq(u0, v0);
if (u1 >= u0)
negmid = 0, udiff = u1 - u0;
else
negmid = 1, udiff = u0 - u1;
if (v0 >= v1)
vdiff = v0 - v1;
else
vdiff = v1 - v0, negmid ^= 1;
mid = udiff * vdiff;
high = u1 * v1;
/*
* Assemble the final product.
*/
prod.ui[H] = high + (negmid ? -mid : mid) + low.ui[L] +
low.ui[H];
prod.ui[L] = low.ui[L];
}
return (negall ? -prod.ll : prod.ll);
#undef u1
#undef u0
#undef v1
#undef v0
}
/*
* Multiply two 2N-bit ints to produce a 4N-bit long long, where N is
* half the number of bits in an int (whatever that is---the code
* below does not care as long as the header file does its part of the
* bargain---but typically N==16).
*
* We use the same algorithm from Knuth, but this time the modulo refinement
* does not apply. On the other hand, since N is half the size of an int,
* we can get away with native multiplication---none of our input terms
* exceeds (UINT_MAX >> 1).
*
* Note that, for unsigned int l, the quad-precision (long long) result
*
* l << N
*
* splits into high and low ints as HHALF(l) and LHUP(l) respectively.
*/
static long long
__lmulq(unsigned int u, unsigned int v)
{
unsigned int u1, u0, v1, v0, udiff, vdiff, high, mid, low;
unsigned int prodh, prodl, was;
union uu prod;
int neg;
u1 = HHALF(u);
u0 = LHALF(u);
v1 = HHALF(v);
v0 = LHALF(v);
low = u0 * v0;
/* This is the same small-number optimization as before. */
if (u1 == 0 && v1 == 0)
return (low);
if (u1 >= u0)
udiff = u1 - u0, neg = 0;
else
udiff = u0 - u1, neg = 1;
if (v0 >= v1)
vdiff = v0 - v1;
else
vdiff = v1 - v0, neg ^= 1;
mid = udiff * vdiff;
high = u1 * v1;
/* prod = (high << 2N) + (high << N); */
prodh = high + HHALF(high);
prodl = LHUP(high);
/* if (neg) prod -= mid << N; else prod += mid << N; */
if (neg) {
was = prodl;
prodl -= LHUP(mid);
prodh -= HHALF(mid) + (prodl > was);
} else {
was = prodl;
prodl += LHUP(mid);
prodh += HHALF(mid) + (prodl < was);
}
/* prod += low << N */
was = prodl;
prodl += LHUP(low);
prodh += HHALF(low) + (prodl < was);
/* ... + low; */
if ((prodl += low) < low)
prodh++;
/* return 4N-bit product */
prod.ui[H] = prodh;
prod.ui[L] = prodl;
return (prod.ll);
}

52
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)negdi2.c 8.1 (Berkeley) 6/4/93
* NetBSD: negdi2.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Return -a (or, equivalently, 0 - a), in long long. See subdi3.c.
*/
long long
__negdi2(long long a)
{
union uu aa, res;
aa.ll = a;
res.ui[L] = -aa.ui[L];
res.ui[H] = -aa.ui[H] - (res.ui[L] > 0);
return (res.ll);
}

53
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)notdi2.c 8.1 (Berkeley) 6/4/93
* NetBSD: notdi2.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Return ~a. For some reason gcc calls this `one's complement' rather
* than `not'.
*/
long long
__one_cmpldi2(long long a)
{
union uu aa;
aa.ll = a;
aa.ui[0] = ~aa.ui[0];
aa.ui[1] = ~aa.ui[1];
return (aa.ll);
}

279
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)qdivrem.c 8.1 (Berkeley) 6/4/93
* NetBSD: qdivrem.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
/*
* Multiprecision divide. This algorithm is from Knuth vol. 2 (2nd ed),
* section 4.3.1, pp. 257--259.
*/
#include "longlong.h"
#define B ((int)1 << HALF_BITS) /* digit base */
/* Combine two `digits' to make a single two-digit number. */
#define COMBINE(a, b) (((unsigned int)(a) << HALF_BITS) | (b))
/* select a type for digits in base B: use unsigned short if they fit */
#if UINT_MAX == 0xffffffffU && USHRT_MAX >= 0xffff
typedef unsigned short digit;
#else
typedef unsigned int digit;
#endif
static void shl(digit *p, int len, int sh);
/*
* __qdivrem(u, v, rem) returns u/v and, optionally, sets *rem to u%v.
*
* We do this in base 2-sup-HALF_BITS, so that all intermediate
* products fit within unsigned int. As a consequence, the maximum
* length dividend and divisor are 4 `digits' in this base (they are
* shorter if they have leading zeros).
*/
unsigned long long
__qdivrem(unsigned long long ull, unsigned long long vll,
unsigned long long *arq)
{
union uu tmp;
digit *u, *v, *q;
digit v1, v2;
unsigned int qhat, rhat, t;
int m, n, d, j, i;
digit uspace[5], vspace[5], qspace[5];
/*
* Take care of special cases: divide by zero, and u < v.
*/
if (vll == 0) {
/* divide by zero. */
static volatile const unsigned int zero = 0;
tmp.ui[H] = tmp.ui[L] = 1 / zero;
if (arq)
*arq = ull;
return (tmp.ll);
}
if (ull < vll) {
if (arq)
*arq = ull;
return (0);
}
u = &uspace[0];
v = &vspace[0];
q = &qspace[0];
/*
* Break dividend and divisor into digits in base B, then
* count leading zeros to determine m and n. When done, we
* will have:
* u = (u[1]u[2]...u[m+n]) sub B
* v = (v[1]v[2]...v[n]) sub B
* v[1] != 0
* 1 < n <= 4 (if n = 1, we use a different division algorithm)
* m >= 0 (otherwise u < v, which we already checked)
* m + n = 4
* and thus
* m = 4 - n <= 2
*/
tmp.ull = ull;
u[0] = 0;
u[1] = (digit)HHALF(tmp.ui[H]);
u[2] = (digit)LHALF(tmp.ui[H]);
u[3] = (digit)HHALF(tmp.ui[L]);
u[4] = (digit)LHALF(tmp.ui[L]);
tmp.ull = vll;
v[1] = (digit)HHALF(tmp.ui[H]);
v[2] = (digit)LHALF(tmp.ui[H]);
v[3] = (digit)HHALF(tmp.ui[L]);
v[4] = (digit)LHALF(tmp.ui[L]);
for (n = 4; v[1] == 0; v++) {
if (--n == 1) {
unsigned int rbj; /* r*B+u[j] (not root boy jim) */
digit q1, q2, q3, q4;
/*
* Change of plan, per exercise 16.
* r = 0;
* for j = 1..4:
* q[j] = floor((r*B + u[j]) / v),
* r = (r*B + u[j]) % v;
* We unroll this completely here.
*/
t = v[2]; /* nonzero, by definition */
q1 = (digit)(u[1] / t);
rbj = COMBINE(u[1] % t, u[2]);
q2 = (digit)(rbj / t);
rbj = COMBINE(rbj % t, u[3]);
q3 = (digit)(rbj / t);
rbj = COMBINE(rbj % t, u[4]);
q4 = (digit)(rbj / t);
if (arq)
*arq = rbj % t;
tmp.ui[H] = COMBINE(q1, q2);
tmp.ui[L] = COMBINE(q3, q4);
return (tmp.ll);
}
}
/*
* By adjusting q once we determine m, we can guarantee that
* there is a complete four-digit quotient at &qspace[1] when
* we finally stop.
*/
for (m = 4 - n; u[1] == 0; u++)
m--;
for (i = 4 - m; --i >= 0;)
q[i] = 0;
q += 4 - m;
/*
* Here we run Program D, translated from MIX to C and acquiring
* a few minor changes.
*
* D1: choose multiplier 1 << d to ensure v[1] >= B/2.
*/
d = 0;
for (t = v[1]; t < B / 2; t <<= 1)
d++;
if (d > 0) {
shl(&u[0], m + n, d); /* u <<= d */
shl(&v[1], n - 1, d); /* v <<= d */
}
/*
* D2: j = 0.
*/
j = 0;
v1 = v[1]; /* for D3 -- note that v[1..n] are constant */
v2 = v[2]; /* for D3 */
do {
digit uj0, uj1, uj2;
/*
* D3: Calculate qhat (\^q, in TeX notation).
* Let qhat = min((u[j]*B + u[j+1])/v[1], B-1), and
* let rhat = (u[j]*B + u[j+1]) mod v[1].
* While rhat < B and v[2]*qhat > rhat*B+u[j+2],
* decrement qhat and increase rhat correspondingly.
* Note that if rhat >= B, v[2]*qhat < rhat*B.
*/
uj0 = u[j + 0]; /* for D3 only -- note that u[j+...] change */
uj1 = u[j + 1]; /* for D3 only */
uj2 = u[j + 2]; /* for D3 only */
if (uj0 == v1) {
qhat = B;
rhat = uj1;
goto qhat_too_big;
} else {
unsigned int nn = COMBINE(uj0, uj1);
qhat = nn / v1;
rhat = nn % v1;
}
while (v2 * qhat > COMBINE(rhat, uj2)) {
qhat_too_big:
qhat--;
if ((rhat += v1) >= B)
break;
}
/*
* D4: Multiply and subtract.
* The variable `t' holds any borrows across the loop.
* We split this up so that we do not require v[0] = 0,
* and to eliminate a final special case.
*/
for (t = 0, i = n; i > 0; i--) {
t = u[i + j] - v[i] * qhat - t;
u[i + j] = (digit)LHALF(t);
t = (B - HHALF(t)) & (B - 1);
}
t = u[j] - t;
u[j] = (digit)LHALF(t);
/*
* D5: test remainder.
* There is a borrow if and only if HHALF(t) is nonzero;
* in that (rare) case, qhat was too large (by exactly 1).
* Fix it by adding v[1..n] to u[j..j+n].
*/
if (HHALF(t)) {
qhat--;
for (t = 0, i = n; i > 0; i--) { /* D6: add back. */
t += u[i + j] + v[i];
u[i + j] = (digit)LHALF(t);
t = HHALF(t);
}
u[j] = (digit)LHALF(u[j] + t);
}
q[j] = (digit)qhat;
} while (++j <= m); /* D7: loop on j. */
/*
* If caller wants the remainder, we have to calculate it as
* u[m..m+n] >> d (this is at most n digits and thus fits in
* u[m+1..m+n], but we may need more source digits).
*/
if (arq) {
if (d) {
for (i = m + n; i > m; --i)
u[i] = (digit)(((unsigned int)u[i] >> d) |
LHALF((unsigned int)u[i - 1] <<
(HALF_BITS - d)));
u[i] = 0;
}
tmp.ui[H] = COMBINE(uspace[1], uspace[2]);
tmp.ui[L] = COMBINE(uspace[3], uspace[4]);
*arq = tmp.ll;
}
tmp.ui[H] = COMBINE(qspace[1], qspace[2]);
tmp.ui[L] = COMBINE(qspace[3], qspace[4]);
return (tmp.ll);
}
/*
* Shift p[0]..p[len] left `sh' bits, ignoring any bits that
* `fall out' the left (there never will be any such anyway).
* We may assume len >= 0. NOTE THAT THIS WRITES len+1 DIGITS.
*/
static void
shl(digit *p, int len, int sh)
{
int i;
for (i = 0; i < len; i++)
p[i] = (digit)(LHALF((unsigned int)p[i] << sh) |
((unsigned int)p[i + 1] >> (HALF_BITS - sh)));
p[i] = (digit)(LHALF((unsigned int)p[i] << sh));
}

55
common/gcc-millicode/subdi3.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)subdi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: subdi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Subtract two long long values. This is trivial since a one-bit
* carry from a single unsigned int difference x-y occurs if and only
* if (x-y) > x.
*/
long long
__subdi3(long long a, long long b)
{
union uu aa, bb, diff;
aa.ll = a;
bb.ll = b;
diff.ui[L] = aa.ui[L] - bb.ui[L];
diff.ui[H] = aa.ui[H] - bb.ui[H] - (diff.ui[L] > aa.ui[L]);
return (diff.ll);
}

53
common/gcc-millicode/ucmpdi2.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)ucmpdi2.c 8.1 (Berkeley) 6/4/93
* NetBSD: ucmpdi2.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Return 0, 1, or 2 as a <, =, > b respectively.
* Neither a nor b are considered signed.
*/
int
__ucmpdi2(unsigned long long a, unsigned long long b)
{
union uu aa, bb;
aa.ull = a;
bb.ull = b;
return (aa.ui[H] < bb.ui[H] ? 0 : aa.ui[H] > bb.ui[H] ? 2 :
aa.ui[L] < bb.ui[L] ? 0 : aa.ui[L] > bb.ui[L] ? 2 : 1);
}

48
common/gcc-millicode/udivdi3.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)udivdi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: udivdi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Divide two unsigned long longs.
*/
unsigned long long
__udivdi3(unsigned long long a, unsigned long long b)
{
return __qdivrem(a, b, NULL);
}

50
common/gcc-millicode/umoddi3.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)umoddi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: umoddi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Return remainder after dividing two unsigned long longs.
*/
unsigned long long
__umoddi3(unsigned long long a, unsigned long long b)
{
unsigned long long r;
(void)__qdivrem(a, b, &r);
return (r);
}

53
common/gcc-millicode/xordi3.c Normal file
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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* From:
* @(#)xordi3.c 8.1 (Berkeley) 6/4/93
* NetBSD: xordi3.c,v 1.1 2005/12/20 19:28:51 christos Exp
*/
#include "longlong.h"
/*
* Return a ^ b, in long long.
*/
long long
__xordi3(long long a, long long b)
{
union uu aa, bb;
aa.ll = a;
bb.ll = b;
aa.ui[0] ^= bb.ui[0];
aa.ui[1] ^= bb.ui[1];
return (aa.ll);
}