219 lines
8.7 KiB
C
219 lines
8.7 KiB
C
/*
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* Copyright (c) 2007-2008 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#ifndef _KXLD_UTIL_H_
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#define _KXLD_UTIL_H_
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#include <sys/types.h>
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#if KERNEL
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#include <libkern/kxld_types.h>
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#include <mach/machine.h>
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#else
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#include <architecture/byte_order.h>
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#include "kxld_types.h"
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/* Get machine.h from the kernel source so we can support all platforms
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* that the kernel supports. Otherwise we're at the mercy of the host.
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*/
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#include "../../osfmk/mach/machine.h"
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#endif
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/* 64-bit helpers */
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#if !defined(KERNEL)
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#define KXLD_3264_FUNC(cond32, rval, func32, func64, ...) \
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do { \
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if (cond32) { \
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(rval) = (func32)(__VA_ARGS__); \
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} else { \
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(rval) = (func64)(__VA_ARGS__); \
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} \
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} while(0)
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#elif defined(__LP64__)
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#define KXLD_3264_FUNC(cond32, rval, func32, func64, ...) \
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do { \
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(rval) = (func64)(__VA_ARGS__); \
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} while(0)
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#else
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#define KXLD_3264_FUNC(cond32, rval, func32, func64, ...) \
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do { \
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(rval) = (func32)(__VA_ARGS__); \
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} while(0) \
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#endif
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/* Misc string functions */
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#define streq(str1, str2) (((str1) && (str2)) ? !strcmp((str1), (str2)) : 0)
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#define streq_safe(str1, str2, len) (((str1) && (str2)) ? \
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!strncmp((str1), (str2), (len)) : 0)
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#define const_strlen(str) (sizeof(str) - 1)
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#define const_array_len(array) sizeof(array) / sizeof(*array)
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/* Timing */
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#define DECL_TIMER() struct timeval start, end;
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#define START_TIMER() gettimeofday(&start, NULL);
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#define END_TIMER() gettimeofday(&end, NULL);
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#define PRINT_TIMER(msg) kxld_log("%s: %ds, %dus\n", (msg), \
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(end.tv_sec - start.tv_sec), (end.tv_usec - start.tv_usec));
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/* Misc definitions */
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#define KXLD_MAX_NAME_LEN 256
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#define KXLD_SEG_GOT "__DATA"
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#define KXLD_SECT_GOT "__kxld_got"
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#define KXLD_KMOD_INFO_SYMBOL "_kmod_info"
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#define KXLD_WEAK_TEST_SYMBOL "_gOSKextUnresolved"
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#define KXLD_OPERATOR_NEW_SYMBOL "__Znwm"
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#define KXLD_OPERATOR_NEW_ARRAY_SYMBOL "__Znam"
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#define KXLD_OPERATOR_DELETE_SYMBOL "__ZdlPv"
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#define KXLD_OPERATOR_DELETE_ARRAY_SYMBOL "__ZdaPv"
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struct kxld_section_name {
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char segname[16];
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char sectname[16];
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};
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typedef struct kxld_section_name KXLDSectionName;
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/*******************************************************************************
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* Logging
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*******************************************************************************/
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void kxld_set_logging_callback(KXLDLoggingCallback logging_callback)
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__attribute__((visibility("hidden")));
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void kxld_set_logging_callback_data(const char * name, void *user_data)
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__attribute__((visibility("hidden")));
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void kxld_log(KXLDLogSubsystem subsystem, KXLDLogLevel level,
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const char *format, ...)
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__attribute__((visibility("hidden"), format(printf, 3, 4)));
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/* Common logging strings */
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#define kKxldLogArchNotSupported "The target architecture (cputype 0x%x) is not supported by kxld."
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#define kKxldLogArchNotFound "The kext does not contain a fat slice for the target architecture."
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#define kKxldLogFiletypeNotSupported "The Mach-O filetype 0x%x is not supported on the target architecture."
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#define kKxldLogTruncatedMachO "The Mach-O file has been truncated. Make sure the Mach-O header structures are correct."
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#define kKxldLogMalformedMachO "The Mach-O file is malformed: "
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#define kKxldLogMalformedVTable "The vtable '%s' is malformed. Make sure your kext has been built against the correct headers."
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#define kKxldLogMissingVtable "Cannot find the vtable '%s' for class '%s'. This vtable symbol is required for binary compatibility, and it may have been stripped."
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#define kKxldLogDirectPureVirtualCall "This kext calls a pure virtual function. Make sure your kext's OSObject-derived classes implement all pure virtual functions."
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#define kKxldLogParentOutOfDate "The super class vtable '%s' for vtable '%s' is out of date. Make sure your kext has been built against the correct headers."
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#define kKxldLogNoKmodInfo "The kext is missing its kmod_info structure."
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#define kKxldLogRelocationOverflow "A relocation entry has overflowed. The kext may be too far from one " \
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"of its dependencies. Check your kext's load address."
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#define kKxldLogRelocatingPatchedSym "Warning: relocation failed because some class in this kext " \
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"didn't use the OSDeclareDefaultStructors and OSDefineMetaClassAndStructors, " \
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"or didn't export all vtable symbols, so it still " \
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"references %s, which has been patched with another symbol for binary compatibility. " \
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"Please make sure all classes that inherit from OSObject use these macros."
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/*******************************************************************************
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* Allocators
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*******************************************************************************/
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void * kxld_calloc(size_t size)
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__attribute__((malloc, visibility("hidden")));
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void * kxld_alloc(size_t size)
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__attribute__((malloc, visibility("hidden")));
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void * kxld_page_alloc(size_t size)
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__attribute__((malloc, visibility("hidden")));
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void * kxld_page_alloc_untracked(size_t size)
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__attribute__((malloc, visibility("hidden")));
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/*******************************************************************************
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* Deallocators
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*******************************************************************************/
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void kxld_free(void *ptr, size_t size)
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__attribute__((visibility("hidden")));
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void kxld_page_free(void *ptr, size_t size)
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__attribute__((visibility("hidden")));
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void kxld_page_free_untracked(void *ptr, size_t size)
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__attribute__((visibility("hidden")));
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/*******************************************************************************
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* Mach-O Functions
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*******************************************************************************/
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kern_return_t validate_and_swap_macho_32(u_char *file, u_long size
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#if !KERNEL
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, enum NXByteOrder host_order
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#endif /* !KERNEL */
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) __attribute__((visibility("hidden")));
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kern_return_t validate_and_swap_macho_64(u_char *file, u_long size
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#if !KERNEL
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, enum NXByteOrder host_order
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#endif /* !KERNEL */
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) __attribute__((visibility("hidden")));
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#if !KERNEL
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void unswap_macho(u_char *file, enum NXByteOrder host_order,
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enum NXByteOrder target_order)
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__attribute__((visibility("hidden")));
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#endif /* !KERNEL */
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/*******************************************************************************
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* Miscellaneous
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*******************************************************************************/
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kxld_addr_t kxld_align_address(kxld_addr_t address, u_int align)
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__attribute__((const, visibility("hidden")));
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boolean_t kxld_is_32_bit(cpu_type_t)
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__attribute__((const, visibility("hidden")));
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/*******************************************************************************
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* Debugging
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*******************************************************************************/
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void kxld_print_memory_report(void)
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__attribute__((visibility("hidden")));
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/*******************************************************************************
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* Cross Linking
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*******************************************************************************/
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#if !KERNEL
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boolean_t kxld_set_cross_link_page_size(kxld_size_t target_page_size);
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#endif /* !KERNEL */
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kxld_size_t kxld_get_effective_page_size(void);
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kxld_addr_t kxld_round_page_cross_safe(kxld_addr_t addr);
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#if SPLIT_KEXTS_DEBUG
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void kxld_show_split_info(splitKextLinkInfo *info);
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#endif
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#endif /* _KXLD_UTIL_H_ */
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