/* * Copyright (c) 1999-2007 Apple Inc. All Rights Reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #if __OBJC2__ #include "objc-private.h" #include "objc-file.h" #define GETSECT(name, type, sectname) \ type *name(const header_info *hi, size_t *outCount) \ { \ unsigned long byteCount = 0; \ type *data = (type *) \ getsectiondata(hi->mhdr, SEG_DATA, sectname, &byteCount); \ *outCount = byteCount / sizeof(type); \ return data; \ } // function name content type section name GETSECT(_getObjc2SelectorRefs, SEL, "__objc_selrefs"); GETSECT(_getObjc2MessageRefs, message_ref_t, "__objc_msgrefs"); GETSECT(_getObjc2ClassRefs, Class, "__objc_classrefs"); GETSECT(_getObjc2SuperRefs, Class, "__objc_superrefs"); GETSECT(_getObjc2ClassList, classref_t, "__objc_classlist"); GETSECT(_getObjc2NonlazyClassList, classref_t, "__objc_nlclslist"); GETSECT(_getObjc2CategoryList, category_t *, "__objc_catlist"); GETSECT(_getObjc2NonlazyCategoryList, category_t *, "__objc_nlcatlist"); GETSECT(_getObjc2ProtocolList, protocol_t *, "__objc_protolist"); GETSECT(_getObjc2ProtocolRefs, protocol_t *, "__objc_protorefs"); objc_image_info * _getObjcImageInfo(const headerType *mhdr, size_t *outBytes) { unsigned long byteCount = 0; objc_image_info *data = (objc_image_info *) getsectiondata(mhdr, SEG_DATA, "__objc_imageinfo", &byteCount); *outBytes = byteCount; return data; } static const segmentType * getsegbynamefromheader(const headerType *head, const char *segname) { const segmentType *sgp; unsigned long i; sgp = (const segmentType *) (head + 1); for (i = 0; i < head->ncmds; i++){ if (sgp->cmd == SEGMENT_CMD) { if (strncmp(sgp->segname, segname, sizeof(sgp->segname)) == 0) { return sgp; } } sgp = (const segmentType *)((char *)sgp + sgp->cmdsize); } return NULL; } BOOL _hasObjcContents(const header_info *hi) { // Look for a __DATA,__objc* section other than __DATA,__objc_imageinfo const segmentType *seg = getsegbynamefromheader(hi->mhdr, "__DATA"); if (!seg) return NO; const sectionType *sect; uint32_t i; for (i = 0; i < seg->nsects; i++) { sect = ((const sectionType *)(seg+1))+i; if (0 == strncmp(sect->sectname, "__objc_", 7) && 0 != strncmp(sect->sectname, "__objc_imageinfo", 16)) { return YES; } } return NO; } #endif