1 /* libunwind - a platform-independent unwind library 2 Copyright (C) 2003 Hewlett-Packard Co 3 Contributed by David Mosberger-Tang <davidm (at) hpl.hp.com> 4 5 Modified for x86_64 by Max Asbock <masbock (at) us.ibm.com> 6 Copyright (C) 2012 Tommi Rantala <tt.rantala (at) gmail.com> 7 8 This file is part of libunwind. 9 10 Permission is hereby granted, free of charge, to any person obtaining 11 a copy of this software and associated documentation files (the 12 "Software"), to deal in the Software without restriction, including 13 without limitation the rights to use, copy, modify, merge, publish, 14 distribute, sublicense, and/or sell copies of the Software, and to 15 permit persons to whom the Software is furnished to do so, subject to 16 the following conditions: 17 18 The above copyright notice and this permission notice shall be 19 included in all copies or substantial portions of the Software. 20 21 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 22 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 23 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 24 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 25 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 26 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 27 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ 28 29 #include <stdlib.h> 30 31 #include "unwind_i.h" 32 33 #if defined(_LITTLE_ENDIAN) && !defined(__LITTLE_ENDIAN) 34 #define __LITTLE_ENDIAN _LITTLE_ENDIAN 35 #endif 36 37 PROTECTED unw_addr_space_t 38 unw_create_addr_space (unw_accessors_t *a, int byte_order) 39 { 40 #ifdef UNW_LOCAL_ONLY 41 return NULL; 42 #else 43 unw_addr_space_t as; 44 45 /* 46 * x86_64 supports only little-endian. 47 */ 48 if (byte_order != 0 && byte_order != __LITTLE_ENDIAN) 49 return NULL; 50 51 as = malloc (sizeof (*as)); 52 if (!as) 53 return NULL; 54 55 memset (as, 0, sizeof (*as)); 56 57 as->acc = *a; 58 59 return as; 60 #endif 61 } 62
