mirror of
https://github.com/darlinghq/darling-objc4.git
synced 2024-11-26 21:50:26 +00:00
113 lines
4.4 KiB
C++
113 lines
4.4 KiB
C++
/*
|
|
* Copyright (c) 2009 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@
|
|
*/
|
|
|
|
#ifndef _OBJC_FILE_NEW_H
|
|
#define _OBJC_FILE_NEW_H
|
|
|
|
#if __OBJC2__
|
|
|
|
#include "objc-runtime-new.h"
|
|
|
|
// classref_t is not fixed up at launch; use remapClass() to convert
|
|
|
|
// classlist and catlist and protolist sections are marked const here
|
|
// because those sections may be in read-only __DATA_CONST segments.
|
|
|
|
extern SEL *_getObjc2SelectorRefs(const header_info *hi, size_t *count);
|
|
extern message_ref_t *_getObjc2MessageRefs(const header_info *hi, size_t *count);
|
|
extern Class*_getObjc2ClassRefs(const header_info *hi, size_t *count);
|
|
extern Class*_getObjc2SuperRefs(const header_info *hi, size_t *count);
|
|
extern classref_t const *_getObjc2ClassList(const header_info *hi, size_t *count);
|
|
// Use hi->nlclslist() instead
|
|
// extern classref_t const *_getObjc2NonlazyClassList(const header_info *hi, size_t *count);
|
|
// Use hi->catlist() instead
|
|
// extern category_t * const *_getObjc2CategoryList(const header_info *hi, size_t *count);
|
|
// Use hi->catlist2() instead
|
|
// extern category_t * const *_getObjc2CategoryList2(const header_info *hi, size_t *count);
|
|
// Use hi->nlcatlist() instead
|
|
// extern category_t * const *_getObjc2NonlazyCategoryList(const header_info *hi, size_t *count);
|
|
extern protocol_t * const *_getObjc2ProtocolList(const header_info *hi, size_t *count);
|
|
extern protocol_t **_getObjc2ProtocolRefs(const header_info *hi, size_t *count);
|
|
|
|
// FIXME: rdar://29241917&33734254 clang doesn't sign static initializers.
|
|
struct UnsignedInitializer {
|
|
private:
|
|
uintptr_t storage;
|
|
public:
|
|
UnsignedInitializer(uint32_t offset) {
|
|
storage = (uintptr_t)&_mh_dylib_header + offset;
|
|
}
|
|
|
|
void operator () () const {
|
|
using Initializer = void(*)();
|
|
Initializer init =
|
|
ptrauth_sign_unauthenticated((Initializer)storage,
|
|
ptrauth_key_function_pointer, 0);
|
|
init();
|
|
}
|
|
};
|
|
|
|
extern UnsignedInitializer *getLibobjcInitializers(const header_info *hi, size_t *count);
|
|
|
|
extern classref_t const *_getObjc2NonlazyClassList(const headerType *mhdr, size_t *count);
|
|
extern category_t * const *_getObjc2CategoryList(const headerType *mhdr, size_t *count);
|
|
extern category_t * const *_getObjc2CategoryList2(const headerType *mhdr, size_t *count);
|
|
extern category_t * const *_getObjc2NonlazyCategoryList(const headerType *mhdr, size_t *count);
|
|
extern UnsignedInitializer *getLibobjcInitializers(const headerType *mhdr, size_t *count);
|
|
extern uint32_t *getLibobjcInitializerOffsets(const headerType *hi, size_t *count);
|
|
|
|
static inline void
|
|
foreach_data_segment(const headerType *mhdr,
|
|
std::function<void(const segmentType *, intptr_t slide)> code)
|
|
{
|
|
intptr_t slide = 0;
|
|
|
|
// compute VM slide
|
|
const segmentType *seg = (const segmentType *) (mhdr + 1);
|
|
for (unsigned long i = 0; i < mhdr->ncmds; i++) {
|
|
if (seg->cmd == SEGMENT_CMD &&
|
|
segnameEquals(seg->segname, "__TEXT"))
|
|
{
|
|
slide = (char *)mhdr - (char *)seg->vmaddr;
|
|
break;
|
|
}
|
|
seg = (const segmentType *)((char *)seg + seg->cmdsize);
|
|
}
|
|
|
|
// enumerate __DATA* and __AUTH* segments
|
|
seg = (const segmentType *) (mhdr + 1);
|
|
for (unsigned long i = 0; i < mhdr->ncmds; i++) {
|
|
if (seg->cmd == SEGMENT_CMD &&
|
|
(segnameStartsWith(seg->segname, "__DATA") ||
|
|
segnameStartsWith(seg->segname, "__AUTH")))
|
|
{
|
|
code(seg, slide);
|
|
}
|
|
seg = (const segmentType *)((char *)seg + seg->cmdsize);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|