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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
* Definitions needed for accessing MACH object headers.
*/
typedef struct {
uint32 magic; /* mach magic number identifier */
uint32 cputype; /* cpu specifier */
uint32 cpusubtype; /* machine specifier */
uint32 filetype; /* type of file */
uint32 ncmds; /* number of load commands */
uint32 sizeofcmds; /* the size of all the load commands */
uint32 flags; /* flags */
uint32 reserved; /* reserved */
} Machhdr;
typedef struct {
uint32 type; /* type of load command */
uint32 size; /* total size in bytes */
} MachCmd;
typedef struct {
MachCmd cmd;
char segname[16]; /* segment name */
uint32 vmaddr; /* memory address of this segment */
uint32 vmsize; /* memory size of this segment */
uint32 fileoff; /* file offset of this segment */
uint32 filesize; /* amount to map from the file */
uint32 maxprot; /* maximum VM protection */
uint32 initprot; /* initial VM protection */
uint32 nsects; /* number of sections in segment */
uint32 flags; /* flags */
} MachSeg32; /* for 32-bit architectures */
typedef struct {
MachCmd cmd;
char segname[16]; /* segment name */
uvlong vmaddr; /* memory address of this segment */
uvlong vmsize; /* memory size of this segment */
uvlong fileoff; /* file offset of this segment */
uvlong filesize; /* amount to map from the file */
uint32 maxprot; /* maximum VM protection */
uint32 initprot; /* initial VM protection */
uint32 nsects; /* number of sections in segment */
uint32 flags; /* flags */
} MachSeg64; /* for 64-bit architectures */
typedef struct {
MachCmd cmd;
uint32 fileoff; /* file offset of this segment */
uint32 filesize; /* amount to map from the file */
} MachSymSeg;
typedef struct {
char sectname[16]; /* name of this section */
char segname[16]; /* segment this section goes in */
uint32 addr; /* memory address of this section */
uint32 size; /* size in bytes of this section */
uint32 offset; /* file offset of this section */
uint32 align; /* section alignment (power of 2) */
uint32 reloff; /* file offset of relocation entries */
uint32 nreloc; /* number of relocation entries */
uint32 flags; /* flags (section type and attributes)*/
uint32 reserved1; /* reserved (for offset or index) */
uint32 reserved2; /* reserved (for count or sizeof) */
} MachSect32; /* for 32-bit architectures */
typedef struct {
char sectname[16]; /* name of this section */
char segname[16]; /* segment this section goes in */
uvlong addr; /* memory address of this section */
uvlong size; /* size in bytes of this section */
uint32 offset; /* file offset of this section */
uint32 align; /* section alignment (power of 2) */
uint32 reloff; /* file offset of relocation entries */
uint32 nreloc; /* number of relocation entries */
uint32 flags; /* flags (section type and attributes)*/
uint32 reserved1; /* reserved (for offset or index) */
uint32 reserved2; /* reserved (for count or sizeof) */
uint32 reserved3; /* reserved */
} MachSect64; /* for 64-bit architectures */
enum {
MACH_CPU_TYPE_X86_64 = (1<<24)|7,
MACH_CPU_TYPE_X86 = 7,
MACH_CPU_SUBTYPE_X86 = 3,
MACH_CPU_SUBTYPE_X86_64 = (1<<31)|3,
MACH_EXECUTABLE_TYPE = 2,
MACH_SEGMENT_32 = 1, /* 32-bit mapped segment */
MACH_SEGMENT_64 = 0x19, /* 64-bit mapped segment */
MACH_SYMSEG = 3, /* obsolete gdb symtab, reused by go */
MACH_UNIXTHREAD = 0x5, /* thread (for stack) */
};
#define MACH64_MAG ((0xcf<<24) | (0xfa<<16) | (0xed<<8) | 0xfe)
#define MACH32_MAG ((0xce<<24) | (0xfa<<16) | (0xed<<8) | 0xfe)
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