diff options
Diffstat (limited to 'src/third_party/mac_headers/mach-o/loader.h')
| -rw-r--r-- | src/third_party/mac_headers/mach-o/loader.h | 236 |
1 files changed, 220 insertions, 16 deletions
diff --git a/src/third_party/mac_headers/mach-o/loader.h b/src/third_party/mac_headers/mach-o/loader.h index ff18e29c..2b03dfdc 100644 --- a/src/third_party/mac_headers/mach-o/loader.h +++ b/src/third_party/mac_headers/mach-o/loader.h @@ -115,11 +115,14 @@ struct mach_header_64 { #define MH_DYLIB 0x6 /* dynamically bound shared library */ #define MH_DYLINKER 0x7 /* dynamic link editor */ #define MH_BUNDLE 0x8 /* dynamically bound bundle file */ -#define MH_DYLIB_STUB 0x9 /* shared library stub for static */ - /* linking only, no section contents */ -#define MH_DSYM 0xa /* companion file with only debug */ - /* sections */ +#define MH_DYLIB_STUB 0x9 /* shared library stub for static + linking only, no section contents */ +#define MH_DSYM 0xa /* companion file with only debug + sections */ #define MH_KEXT_BUNDLE 0xb /* x86_64 kexts */ +#define MH_FILESET 0xc /* a file composed of other Mach-Os to + be run in the same userspace sharing + a single linkedit. */ /* Constants for the flags field of the mach_header */ #define MH_NOUNDEFS 0x1 /* the object file has no undefined @@ -207,6 +210,25 @@ struct mach_header_64 { require it. Only used in MH_EXECUTE filetypes. */ +#define MH_APP_EXTENSION_SAFE 0x02000000 /* The code was linked for use in an + application extension. */ + +#define MH_NLIST_OUTOFSYNC_WITH_DYLDINFO 0x04000000 /* The external symbols + listed in the nlist symbol table do + not include all the symbols listed in + the dyld info. */ + +#define MH_SIM_SUPPORT 0x08000000 /* Allow LC_MIN_VERSION_MACOS and + LC_BUILD_VERSION load commands with + the platforms macOS, macCatalyst, + iOSSimulator, tvOSSimulator and + watchOSSimulator. */ + +#define MH_DYLIB_IN_CACHE 0x80000000 /* Only for use on dylibs. When this bit + is set, the dylib is part of the dyld + shared cache, rather than loose in + the filesystem. */ + /* * The load commands directly follow the mach_header. The total size of all * of the commands is given by the sizeofcmds field in the mach_header. All @@ -290,6 +312,20 @@ struct load_command { #define LC_FUNCTION_STARTS 0x26 /* compressed table of function start addresses */ #define LC_DYLD_ENVIRONMENT 0x27 /* string for dyld to treat like environment variable */ +#define LC_MAIN (0x28|LC_REQ_DYLD) /* replacement for LC_UNIXTHREAD */ +#define LC_DATA_IN_CODE 0x29 /* table of non-instructions in __text */ +#define LC_SOURCE_VERSION 0x2A /* source version used to build binary */ +#define LC_DYLIB_CODE_SIGN_DRS 0x2B /* Code signing DRs copied from linked dylibs */ +#define LC_ENCRYPTION_INFO_64 0x2C /* 64-bit encrypted segment information */ +#define LC_LINKER_OPTION 0x2D /* linker options in MH_OBJECT files */ +#define LC_LINKER_OPTIMIZATION_HINT 0x2E /* optimization hints in MH_OBJECT files */ +#define LC_VERSION_MIN_TVOS 0x2F /* build for AppleTV min OS version */ +#define LC_VERSION_MIN_WATCHOS 0x30 /* build for Watch min OS version */ +#define LC_NOTE 0x31 /* arbitrary data included within a Mach-O file */ +#define LC_BUILD_VERSION 0x32 /* build for platform min OS version */ +#define LC_DYLD_EXPORTS_TRIE (0x33 | LC_REQ_DYLD) /* used with linkedit_data_command, payload is trie */ +#define LC_DYLD_CHAINED_FIXUPS (0x34 | LC_REQ_DYLD) /* used with linkedit_data_command */ +#define LC_FILESET_ENTRY (0x35 | LC_REQ_DYLD) /* used with fileset_entry_command */ /* * A variable length string in a load command is represented by an lc_str @@ -367,6 +403,9 @@ struct segment_command_64 { /* for 64-bit architectures */ first page of the segment is not protected. All other pages of the segment are protected. */ +#define SG_READ_ONLY 0x10 /* This segment is made read-only after fixups */ + + /* * A segment is made up of zero or more sections. Non-MH_OBJECT files have @@ -492,6 +531,8 @@ struct section_64 { /* for 64-bit architectures */ #define S_THREAD_LOCAL_INIT_FUNCTION_POINTERS 0x15 /* functions to call to initialize TLV values */ +#define S_INIT_FUNC_OFFSETS 0x16 /* 32-bit offsets to + initializers */ /* * Constants for the section attributes part of the flags field of a section @@ -753,14 +794,14 @@ struct dylinker_command { * Thread commands contain machine-specific data structures suitable for * use in the thread state primitives. The machine specific data structures * follow the struct thread_command as follows. - * Each flavor of machine specific data structure is preceded by an unsigned - * long constant for the flavor of that data structure, an uint32_t - * that is the count of longs of the size of the state data structure and then + * Each flavor of machine specific data structure is preceded by an uint32_t + * constant for the flavor of that data structure, an uint32_t that is the + * count of uint32_t's of the size of the state data structure and then * the state data structure follows. This triple may be repeated for many * flavors. The constants for the flavors, counts and state data structure * definitions are expected to be in the header file <machine/thread_status.h>. * These machine specific data structures sizes must be multiples of - * 4 bytes The cmdsize reflects the total size of the thread_command + * 4 bytes. The cmdsize reflects the total size of the thread_command * and all of the sizes of the constants for the flavors, counts and state * data structures. * @@ -774,7 +815,7 @@ struct thread_command { uint32_t cmd; /* LC_THREAD or LC_UNIXTHREAD */ uint32_t cmdsize; /* total size of this command */ /* uint32_t flavor flavor of thread state */ - /* uint32_t count count of longs in thread state */ + /* uint32_t count count of uint32_t's in thread state */ /* struct XXX_thread_state state thread state for this flavor */ /* ... */ }; @@ -1149,7 +1190,11 @@ struct rpath_command { */ struct linkedit_data_command { uint32_t cmd; /* LC_CODE_SIGNATURE, LC_SEGMENT_SPLIT_INFO, - or LC_FUNCTION_STARTS */ + LC_FUNCTION_STARTS, LC_DATA_IN_CODE, + LC_DYLIB_CODE_SIGN_DRS, + LC_LINKER_OPTIMIZATION_HINT, + LC_DYLD_EXPORTS_TRIE, or + LC_DYLD_CHAINED_FIXUPS. */ uint32_t cmdsize; /* sizeof(struct linkedit_data_command) */ uint32_t dataoff; /* file offset of data in __LINKEDIT segment */ uint32_t datasize; /* file size of data in __LINKEDIT segment */ @@ -1169,17 +1214,74 @@ struct encryption_info_command { }; /* + * The encryption_info_command_64 contains the file offset and size of an + * of an encrypted segment (for use in x86_64 targets). + */ +struct encryption_info_command_64 { + uint32_t cmd; /* LC_ENCRYPTION_INFO_64 */ + uint32_t cmdsize; /* sizeof(struct encryption_info_command_64) */ + uint32_t cryptoff; /* file offset of encrypted range */ + uint32_t cryptsize; /* file size of encrypted range */ + uint32_t cryptid; /* which enryption system, + 0 means not-encrypted yet */ + uint32_t pad; /* padding to make this struct's size a multiple + of 8 bytes */ +}; + +/* * The version_min_command contains the min OS version on which this * binary was built to run. */ struct version_min_command { uint32_t cmd; /* LC_VERSION_MIN_MACOSX or - LC_VERSION_MIN_IPHONEOS */ + LC_VERSION_MIN_IPHONEOS or + LC_VERSION_MIN_WATCHOS or + LC_VERSION_MIN_TVOS */ uint32_t cmdsize; /* sizeof(struct min_version_command) */ uint32_t version; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */ - uint32_t reserved; /* zero */ + uint32_t sdk; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */ +}; + +/* + * The build_version_command contains the min OS version on which this + * binary was built to run for its platform. The list of known platforms and + * tool values following it. + */ +struct build_version_command { + uint32_t cmd; /* LC_BUILD_VERSION */ + uint32_t cmdsize; /* sizeof(struct build_version_command) plus */ + /* ntools * sizeof(struct build_tool_version) */ + uint32_t platform; /* platform */ + uint32_t minos; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */ + uint32_t sdk; /* X.Y.Z is encoded in nibbles xxxx.yy.zz */ + uint32_t ntools; /* number of tool entries following this */ +}; + +struct build_tool_version { + uint32_t tool; /* enum for the tool */ + uint32_t version; /* version number of the tool */ }; +/* Known values for the platform field above. */ +#define PLATFORM_MACOS 1 +#define PLATFORM_IOS 2 +#define PLATFORM_TVOS 3 +#define PLATFORM_WATCHOS 4 +#define PLATFORM_BRIDGEOS 5 +#define PLATFORM_MACCATALYST 6 +#define PLATFORM_IOSSIMULATOR 7 +#define PLATFORM_TVOSSIMULATOR 8 +#define PLATFORM_WATCHOSSIMULATOR 9 +#define PLATFORM_DRIVERKIT 10 + +#ifndef __APPLE_BLEACH_SDK__ +#endif /* __APPLE_BLEACH_SDK__ */ + +/* Known values for the tool field above. */ +#define TOOL_CLANG 1 +#define TOOL_SWIFT 2 +#define TOOL_LD 3 + /* * The dyld_info_command contains the file offsets and sizes of * the new compressed form of the information dyld needs to @@ -1265,14 +1367,19 @@ struct dyld_info_command { * Nodes for a symbol start with a uleb128 that is the length of * the exported symbol information for the string so far. * If there is no exported symbol, the node starts with a zero byte. - * If there is exported info, it follows the length. First is - * a uleb128 containing flags. Normally, it is followed by a - * uleb128 encoded offset which is location of the content named + * If there is exported info, it follows the length. + * + * First is a uleb128 containing flags. Normally, it is followed by + * a uleb128 encoded offset which is location of the content named * by the symbol from the mach_header for the image. If the flags * is EXPORT_SYMBOL_FLAGS_REEXPORT, then following the flags is * a uleb128 encoded library ordinal, then a zero terminated * UTF8 string. If the string is zero length, then the symbol * is re-export from the specified dylib with the same name. + * If the flags is EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER, then following + * the flags is two uleb128s: the stub offset and the resolver offset. + * The stub is used by non-lazy pointers. The resolver is used + * by lazy pointers and must be called to get the actual address to use. * * After the optional exported symbol information is a byte of * how many edges (0-255) that this node has leaving it, @@ -1316,6 +1423,7 @@ struct dyld_info_command { #define BIND_SPECIAL_DYLIB_SELF 0 #define BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE -1 #define BIND_SPECIAL_DYLIB_FLAT_LOOKUP -2 +#define BIND_SPECIAL_DYLIB_WEAK_LOOKUP -3 #define BIND_SYMBOL_FLAGS_WEAK_IMPORT 0x1 #define BIND_SYMBOL_FLAGS_NON_WEAK_DEFINITION 0x8 @@ -1335,6 +1443,9 @@ struct dyld_info_command { #define BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB 0xA0 #define BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED 0xB0 #define BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB 0xC0 +#define BIND_OPCODE_THREADED 0xD0 +#define BIND_SUBOPCODE_THREADED_SET_BIND_ORDINAL_TABLE_SIZE_ULEB 0x00 +#define BIND_SUBOPCODE_THREADED_APPLY 0x01 /* @@ -1344,9 +1455,23 @@ struct dyld_info_command { #define EXPORT_SYMBOL_FLAGS_KIND_MASK 0x03 #define EXPORT_SYMBOL_FLAGS_KIND_REGULAR 0x00 #define EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL 0x01 +#define EXPORT_SYMBOL_FLAGS_KIND_ABSOLUTE 0x02 #define EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION 0x04 #define EXPORT_SYMBOL_FLAGS_REEXPORT 0x08 #define EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER 0x10 +#define EXPORT_SYMBOL_FLAGS_STATIC_RESOLVER 0x20 + + +/* + * The linker_option_command contains linker options embedded in object files. + */ +struct linker_option_command { + uint32_t cmd; /* LC_LINKER_OPTION only used in MH_OBJECT filetypes */ + uint32_t cmdsize; + uint32_t count; /* number of strings */ + /* concatenation of zero terminated UTF8 strings. + Zero filled at end to align */ +}; /* * The symseg_command contains the offset and size of the GNU style @@ -1388,6 +1513,50 @@ struct fvmfile_command { uint32_t header_addr; /* files virtual address */ }; + +/* + * The entry_point_command is a replacement for thread_command. + * It is used for main executables to specify the location (file offset) + * of main(). If -stack_size was used at link time, the stacksize + * field will contain the stack size need for the main thread. + */ +struct entry_point_command { + uint32_t cmd; /* LC_MAIN only used in MH_EXECUTE filetypes */ + uint32_t cmdsize; /* 24 */ + uint64_t entryoff; /* file (__TEXT) offset of main() */ + uint64_t stacksize;/* if not zero, initial stack size */ +}; + + +/* + * The source_version_command is an optional load command containing + * the version of the sources used to build the binary. + */ +struct source_version_command { + uint32_t cmd; /* LC_SOURCE_VERSION */ + uint32_t cmdsize; /* 16 */ + uint64_t version; /* A.B.C.D.E packed as a24.b10.c10.d10.e10 */ +}; + + +/* + * The LC_DATA_IN_CODE load commands uses a linkedit_data_command + * to point to an array of data_in_code_entry entries. Each entry + * describes a range of data in a code section. + */ +struct data_in_code_entry { + uint32_t offset; /* from mach_header to start of data range*/ + uint16_t length; /* number of bytes in data range */ + uint16_t kind; /* a DICE_KIND_* value */ +}; +#define DICE_KIND_DATA 0x0001 +#define DICE_KIND_JUMP_TABLE8 0x0002 +#define DICE_KIND_JUMP_TABLE16 0x0003 +#define DICE_KIND_JUMP_TABLE32 0x0004 +#define DICE_KIND_ABS_JUMP_TABLE32 0x0005 + + + /* * Sections of type S_THREAD_LOCAL_VARIABLES contain an array * of tlv_descriptor structures. @@ -1399,4 +1568,39 @@ struct tlv_descriptor unsigned long offset; }; -#endif /* _MACHO_LOADER_H_ */ +/* + * LC_NOTE commands describe a region of arbitrary data included in a Mach-O + * file. Its initial use is to record extra data in MH_CORE files. + */ +struct note_command { + uint32_t cmd; /* LC_NOTE */ + uint32_t cmdsize; /* sizeof(struct note_command) */ + char data_owner[16]; /* owner name for this LC_NOTE */ + uint64_t offset; /* file offset of this data */ + uint64_t size; /* length of data region */ +}; + +/* + * LC_FILESET_ENTRY commands describe constituent Mach-O files that are part + * of a fileset. In one implementation, entries are dylibs with individual + * mach headers and repositionable text and data segments. Each entry is + * further described by its own mach header. + */ +struct fileset_entry_command { + uint32_t cmd; /* LC_FILESET_ENTRY */ + uint32_t cmdsize; /* includes entry_id string */ + uint64_t vmaddr; /* memory address of the entry */ + uint64_t fileoff; /* file offset of the entry */ + union lc_str entry_id; /* contained entry id */ + uint32_t reserved; /* reserved */ +}; + +/* + * These deprecated values may still be used within Apple but are mechanically + * removed from public API. The mechanical process may produce unusual results. + */ +#if (!defined(PLATFORM_IOSMAC)) +#define PLATFORM_IOSMAC PLATFORM_MACCATALYST +#endif + +#endif /* _MACHO_LOADER_H_ */
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