X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=gcc%2Fconfig%2Fm32c%2Fm32c-lib2.c;fp=gcc%2Fconfig%2Fm32c%2Fm32c-lib2.c;h=1ed6ec535e3e26992e7b44ddd42a1779d4433164;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=0000000000000000000000000000000000000000;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/gcc/config/m32c/m32c-lib2.c b/gcc/config/m32c/m32c-lib2.c new file mode 100644 index 00000000..1ed6ec53 --- /dev/null +++ b/gcc/config/m32c/m32c-lib2.c @@ -0,0 +1,134 @@ +/* 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 + . */ + +typedef int HItype __attribute__ ((mode (HI))); +typedef unsigned int UHItype __attribute__ ((mode (HI))); +typedef int SItype __attribute__ ((mode (SI))); +typedef unsigned int USItype __attribute__ ((mode (SI))); + +typedef int word_type __attribute__ ((mode (__word__))); + +USItype udivmodsi4 (USItype num, USItype den, word_type modwanted); +SItype __divsi3 (SItype a, SItype b); +SItype __modsi3 (SItype a, SItype b); +SItype __udivsi3 (SItype a, SItype b); +SItype __umodsi3 (SItype a, SItype b); + +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); +}