/*
* Copyright (c) 2000-2008 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_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. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* 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_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* File: libkern/kernel_mach_header.h
*
* Definitions for accessing mach-o headers.
*
* NOTE: These functions work on Mach-O headers compatible with
* the currently running kernel, and cannot be used against mach
* headers other than that of the currently running kernel.
*
*/
#ifndef _KERNEL_MACH_HEADER_
#define _KERNEL_MACH_HEADER_
#ifdef __cplusplus
extern "C" {
#endif
#include <mach/mach_types.h>
#include <mach-o/loader.h>
#include <mach-o/nlist.h>
#include <mach-o/reloc.h>
#if !KERNEL
#error this header for kernel use only
#endif
#if defined(__LP64__)
typedef struct mach_header_64 kernel_mach_header_t;
typedef struct segment_command_64 kernel_segment_command_t;
typedef struct section_64 kernel_section_t;
typedef struct nlist_64 kernel_nlist_t;
#define MH_MAGIC_KERNEL MH_MAGIC_64
#define LC_SEGMENT_KERNEL LC_SEGMENT_64
#else
typedef struct mach_header kernel_mach_header_t;
typedef struct segment_command kernel_segment_command_t;
typedef struct section kernel_section_t;
typedef struct nlist kernel_nlist_t;
#define MH_MAGIC_KERNEL MH_MAGIC
#define LC_SEGMENT_KERNEL LC_SEGMENT
#define SECT_CONSTRUCTOR "__constructor"
#define SECT_DESTRUCTOR "__destructor"
#endif
#define SECT_MODINITFUNC "__mod_init_func"
#define SECT_MODTERMFUNC "__mod_term_func"
extern kernel_mach_header_t _mh_execute_header;
/*
* If the 'MH_DYLIB_IN_CACHE' bit is set in a kernel or kext mach-o header flag,
* then that mach-o has been linked by the new KernelCollectionBuilder into
* an MH_FILESET kernel collection. This bit is typically reserved for dylibs
* that are part of the dyld-shared-cache, but when applied to constituents of
* a kernel collection, it has this special meaning.
*/
#define kernel_mach_header_is_in_fileset(_mh) ((_mh)->flags & MH_DYLIB_IN_CACHE)
vm_offset_t getlastaddr(kernel_mach_header_t *header);
vm_offset_t getlastkerneladdr(void);
kernel_segment_command_t *firstseg(void);
kernel_segment_command_t *firstsegfromheader(kernel_mach_header_t *header);
kernel_segment_command_t *nextsegfromheader(
kernel_mach_header_t *header,
kernel_segment_command_t *seg);
kernel_segment_command_t *getsegbyname(const char *seg_name);
kernel_segment_command_t *getsegbynamefromheader(
kernel_mach_header_t *header,
const char *seg_name);
void *getsegdatafromheader(kernel_mach_header_t *, const char *, unsigned long *);
kernel_section_t *getsectbyname(const char *seg_name, const char *sect_name);
kernel_section_t *getsectbynamefromheader(
kernel_mach_header_t *header,
const char *seg_name,
const char *sect_name);
kernel_section_t *getsectbynamefromseg(
kernel_segment_command_t *sgp,
const char *segname,
const char *sectname);
uint32_t getsectoffsetfromheader(
kernel_mach_header_t *mhp,
const char *segname,
const char *sectname);
void *getsectdatafromheader(kernel_mach_header_t *, const char *, const char *, unsigned long *);
kernel_section_t *firstsect(kernel_segment_command_t *sgp);
kernel_section_t *nextsect(kernel_segment_command_t *sgp, kernel_section_t *sp);
void *getcommandfromheader(kernel_mach_header_t *, uint32_t);
void *getuuidfromheader(kernel_mach_header_t *, unsigned long *);
bool kernel_text_contains(vm_offset_t);
#ifdef __cplusplus
}
#endif
#endif /* _KERNEL_MACH_HEADER_ */