Mercurial > hg > CbC > CbC_gcc
diff gcc/config/mep/mep-lib2.c @ 55:77e2b8dfacca gcc-4.4.5
update it from 4.4.3 to 4.5.0
author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
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date | Fri, 12 Feb 2010 23:39:51 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/config/mep/mep-lib2.c Fri Feb 12 23:39:51 2010 +0900 @@ -0,0 +1,139 @@ +/* libgcc routines for MeP. + Copyright 2001, 2002, 2009 Free Software Foundation, Inc + +This file 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 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 +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 SItype __attribute__ ((mode (SI))); +typedef unsigned int USItype __attribute__ ((mode (SI))); + +typedef int word_type __attribute__ ((mode (__word__))); + +USItype +__mulsi3 (USItype a, USItype b) +{ + USItype c = 0; + + while (a != 0) + { + if (a & 1) + c += b; + a >>= 1; + b <<= 1; + } + + return c; +} + + + +USItype +udivmodsi4(USItype num, USItype den, word_type modwanted) +{ + USItype bit = 1; + USItype 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; +} + + + +SItype +__divsi3 (SItype a, SItype b) +{ + word_type neg = 0; + SItype 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; +} + + + +SItype +__modsi3 (SItype a, SItype b) +{ + word_type neg = 0; + SItype res; + + if (a < 0) + { + a = -a; + neg = 1; + } + + if (b < 0) + b = -b; + + res = udivmodsi4 (a, b, 1); + + if (neg) + res = -res; + + return res; +} + + + + +SItype +__udivsi3 (SItype a, SItype b) +{ + return udivmodsi4 (a, b, 0); +} + + + +SItype +__umodsi3 (SItype a, SItype b) +{ + return udivmodsi4 (a, b, 1); +}