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Diffstat (limited to 'sysdeps/wordsize-32/cmpdi2.c')
-rw-r--r-- | sysdeps/wordsize-32/cmpdi2.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/sysdeps/wordsize-32/cmpdi2.c b/sysdeps/wordsize-32/cmpdi2.c new file mode 100644 index 0000000000..720c66c460 --- /dev/null +++ b/sysdeps/wordsize-32/cmpdi2.c @@ -0,0 +1,95 @@ +/* 64-bit integer comparison. + Copyright (C) 1989, 1992-2001, 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <endian.h> +#include <stdlib.h> +#include <bits/wordsize.h> +#include <shlib-compat.h> + +#if __WORDSIZE != 32 +# error This is for 32-bit targets only +#endif + +#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_2_6) + +typedef unsigned int UQItype __attribute__ ((mode (QI))); +typedef int SItype __attribute__ ((mode (SI))); +typedef unsigned int USItype __attribute__ ((mode (SI))); +typedef int DItype __attribute__ ((mode (DI))); +typedef unsigned int UDItype __attribute__ ((mode (DI))); +#define Wtype SItype +#define HWtype SItype +#define DWtype DItype +#define UWtype USItype +#define UHWtype USItype +#define UDWtype UDItype +#define W_TYPE_SIZE 32 + +#include <stdlib/longlong.h> + +#if __BYTE_ORDER == __BIG_ENDIAN +struct DWstruct { Wtype high, low;}; +#elif __BYTE_ORDER == __LITTLE_ENDIAN +struct DWstruct { Wtype low, high;}; +#else +#error Unhandled endianity +#endif +typedef union { struct DWstruct s; DWtype ll; } DWunion; + + +Wtype +___cmpdi2 (DWtype a, DWtype b) +{ + DWunion au, bu; + + au.ll = a, bu.ll = b; + + if (au.s.high < bu.s.high) + return 0; + else if (au.s.high > bu.s.high) + return 2; + if ((UWtype) au.s.low < (UWtype) bu.s.low) + return 0; + else if ((UWtype) au.s.low > (UWtype) bu.s.low) + return 2; + return 1; +} +symbol_version (___cmpdi2, __cmpdi2, GLIBC_2.0); + + +Wtype +___ucmpdi2 (DWtype a, DWtype b) +{ + DWunion au, bu; + + au.ll = a, bu.ll = b; + + if ((UWtype) au.s.high < (UWtype) bu.s.high) + return 0; + else if ((UWtype) au.s.high > (UWtype) bu.s.high) + return 2; + if ((UWtype) au.s.low < (UWtype) bu.s.low) + return 0; + else if ((UWtype) au.s.low > (UWtype) bu.s.low) + return 2; + return 1; +} +symbol_version (___ucmpdi2, __ucmpdi2, GLIBC_2.0); + +#endif |