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/* libgcc routines for R8C/M16C/M32C
Copyright (C) 2005, 2009
Free Software Foundation, Inc.
Contributed by Red Hat.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GCC 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 General Public
License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
typedef int sint32_type __attribute__ ((mode (SI)));
typedef unsigned int uint32_type __attribute__ ((mode (SI)));
typedef int word_type __attribute__ ((mode (__word__)));
uint32_type udivmodsi4 (uint32_type, uint32_type, word_type);
sint32_type __divsi3 (sint32_type, sint32_type);
sint32_type __modsi3 (sint32_type, sint32_type);
uint32_type
udivmodsi4 (uint32_type num, uint32_type den, word_type modwanted)
{
uint32_type bit = 1;
uint32_type res = 0;
while (den < num && bit && !(den & (1L << 31)))
{
den <<= 1;
bit <<= 1;
}
while (bit)
{
if (num >= den)
{
num -= den;
res |= bit;
}
bit >>= 1;
den >>= 1;
}
if (modwanted)
return num;
return res;
}
sint32_type
__divsi3 (sint32_type a, sint32_type b)
{
word_type neg = 0;
sint32_type res;
if (a < 0)
{
a = -a;
neg = !neg;
}
if (b < 0)
{
b = -b;
neg = !neg;
}
res = udivmodsi4 (a, b, 0);
if (neg)
res = -res;
return res;
}
sint32_type
__modsi3 (sint32_type a, sint32_type b)
{
word_type neg = 0;
sint32_type res;
if (a < 0)
{
a = -a;
neg = 1;
}
if (b < 0)
b = -b;
res = udivmodsi4 (a, b, 1);
if (neg)
res = -res;
return res;
}
/* See the comment by the definition of LIBGCC2_UNITS_PER_WORD in
m32c.h for why we are creating extra versions of some of the
functions defined in libgcc2.c. */
#define LIBGCC2_UNITS_PER_WORD 2
#define L_clzsi2
#define L_ctzsi2
#define L_ffssi2
#define L_paritysi2
#define L_popcountsi2
#include "libgcc2.c"
uint32_type
__udivsi3 (uint32_type a, uint32_type b)
{
return udivmodsi4 (a, b, 0);
}
uint32_type
__umoddi3 (uint32_type a, uint32_type b)
{
return udivmodsi4 (a, b, 1);
}
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