1/* 2 * Copyright (c) 2000-2008 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * File: libkern/kernel_mach_header.h 30 * 31 * Definitions for accessing mach-o headers. 32 * 33 * NOTE: These functions work on Mach-O headers compatible with 34 * the currently running kernel, and cannot be used against mach 35 * headers other than that of the currently running kernel. 36 * 37 */ 38 39#ifndef _KERNEL_MACH_HEADER_ 40#define _KERNEL_MACH_HEADER_ 41 42#ifdef __cplusplus 43extern "C" { 44#endif 45 46#include <mach/mach_types.h> 47#include <mach-o/loader.h> 48#include <mach-o/nlist.h> 49#include <mach-o/reloc.h> 50 51#if !KERNEL 52#error this header for kernel use only 53#endif 54 55#if defined(__LP64__) 56 57typedef struct mach_header_64 kernel_mach_header_t; 58typedef struct segment_command_64 kernel_segment_command_t; 59typedef struct section_64 kernel_section_t; 60typedef struct nlist_64 kernel_nlist_t; 61 62#define MH_MAGIC_KERNEL MH_MAGIC_64 63#define LC_SEGMENT_KERNEL LC_SEGMENT_64 64 65#else 66 67typedef struct mach_header kernel_mach_header_t; 68typedef struct segment_command kernel_segment_command_t; 69typedef struct section kernel_section_t; 70typedef struct nlist kernel_nlist_t; 71 72#define MH_MAGIC_KERNEL MH_MAGIC 73#define LC_SEGMENT_KERNEL LC_SEGMENT 74#define SECT_CONSTRUCTOR "__constructor" 75#define SECT_DESTRUCTOR "__destructor" 76 77#endif 78 79#define SECT_MODINITFUNC "__mod_init_func" 80#define SECT_MODTERMFUNC "__mod_term_func" 81 82extern kernel_mach_header_t _mh_execute_header; 83 84vm_offset_t getlastaddr(void); 85 86kernel_segment_command_t *firstseg(void); 87kernel_segment_command_t *firstsegfromheader(kernel_mach_header_t *header); 88kernel_segment_command_t *nextsegfromheader( 89 kernel_mach_header_t *header, 90 kernel_segment_command_t *seg); 91kernel_segment_command_t *getsegbyname(const char *seg_name); 92kernel_segment_command_t *getsegbynamefromheader( 93 kernel_mach_header_t *header, 94 const char *seg_name); 95void *getsegdatafromheader(kernel_mach_header_t *, const char *, unsigned long *); 96kernel_section_t *getsectbyname(const char *seg_name, const char *sect_name); 97kernel_section_t *getsectbynamefromheader( 98 kernel_mach_header_t *header, 99 const char *seg_name, 100 const char *sect_name); 101void *getsectdatafromheader(kernel_mach_header_t *, const char *, const char *, unsigned long *); 102kernel_section_t *firstsect(kernel_segment_command_t *sgp); 103kernel_section_t *nextsect(kernel_segment_command_t *sgp, kernel_section_t *sp); 104void *getcommandfromheader(kernel_mach_header_t *, uint32_t); 105void *getuuidfromheader(kernel_mach_header_t *, unsigned long *); 106 107#ifdef __cplusplus 108} 109#endif 110 111#endif /* _KERNEL_MACH_HEADER_ */ 112