1*b30d1939SAndy Fiddaman /*********************************************************************** 2*b30d1939SAndy Fiddaman * * 3*b30d1939SAndy Fiddaman * This software is part of the ast package * 4*b30d1939SAndy Fiddaman * Copyright (c) 1985-2011 AT&T Intellectual Property * 5*b30d1939SAndy Fiddaman * and is licensed under the * 6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 * 7*b30d1939SAndy Fiddaman * by AT&T Intellectual Property * 8*b30d1939SAndy Fiddaman * * 9*b30d1939SAndy Fiddaman * A copy of the License is available at * 10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html * 11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12*b30d1939SAndy Fiddaman * * 13*b30d1939SAndy Fiddaman * Information and Software Systems Research * 14*b30d1939SAndy Fiddaman * AT&T Research * 15*b30d1939SAndy Fiddaman * Florham Park NJ * 16*b30d1939SAndy Fiddaman * * 17*b30d1939SAndy Fiddaman * Glenn Fowler <gsf@research.att.com> * 18*b30d1939SAndy Fiddaman * David Korn <dgk@research.att.com> * 19*b30d1939SAndy Fiddaman * Phong Vo <kpv@research.att.com> * 20*b30d1939SAndy Fiddaman * * 21*b30d1939SAndy Fiddaman ***********************************************************************/ 22*b30d1939SAndy Fiddaman #pragma prototyped 23*b30d1939SAndy Fiddaman /* 24*b30d1939SAndy Fiddaman * Glenn Fowler 25*b30d1939SAndy Fiddaman * AT&T Research 26*b30d1939SAndy Fiddaman * 27*b30d1939SAndy Fiddaman * internal representation conversion support 28*b30d1939SAndy Fiddaman */ 29*b30d1939SAndy Fiddaman 30*b30d1939SAndy Fiddaman #include <ast.h> 31*b30d1939SAndy Fiddaman #include <swap.h> 32*b30d1939SAndy Fiddaman 33*b30d1939SAndy Fiddaman /* 34*b30d1939SAndy Fiddaman * get int_n from b according to op 35*b30d1939SAndy Fiddaman */ 36*b30d1939SAndy Fiddaman 37*b30d1939SAndy Fiddaman intmax_t swapget(int op,const void * b,int n)38*b30d1939SAndy Fiddamanswapget(int op, const void* b, int n) 39*b30d1939SAndy Fiddaman { 40*b30d1939SAndy Fiddaman register unsigned char* p; 41*b30d1939SAndy Fiddaman register unsigned char* d; 42*b30d1939SAndy Fiddaman intmax_t v; 43*b30d1939SAndy Fiddaman unsigned char tmp[sizeof(intmax_t)]; 44*b30d1939SAndy Fiddaman 45*b30d1939SAndy Fiddaman if (n > sizeof(intmax_t)) 46*b30d1939SAndy Fiddaman n = sizeof(intmax_t); 47*b30d1939SAndy Fiddaman if (op) swapmem(op, b, d = tmp, n); 48*b30d1939SAndy Fiddaman else d = (unsigned char*)b; 49*b30d1939SAndy Fiddaman p = d + n; 50*b30d1939SAndy Fiddaman v = 0; 51*b30d1939SAndy Fiddaman while (d < p) 52*b30d1939SAndy Fiddaman { 53*b30d1939SAndy Fiddaman v <<= CHAR_BIT; 54*b30d1939SAndy Fiddaman v |= *d++; 55*b30d1939SAndy Fiddaman } 56*b30d1939SAndy Fiddaman return v; 57*b30d1939SAndy Fiddaman } 58