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/*
* Copyright (c) 2015 Apple Inc. All rights reserved.
*/
#include <mach-o/loader.h>
#ifndef _LOADER_ADDITIONS_H
#define _LOADER_ADDITIONS_H
/*
* Something like this should end up in <mach-o/loader.h>
*/
#define proto_LC_COREINFO 0x140 /* unofficial value!! */
#define proto_CORETYPE_KERNEL 1
#define proto_CORETYPE_USER 2
#define proto_CORETYPE_IBOOT 3
struct proto_coreinfo_command {
uint32_t cmd; /* LC_COREINFO */
uint32_t cmdsize; /* total size of this command */
uint32_t version; /* currently 1 */
uint16_t type; /* CORETYPE_KERNEL, CORETYPE_USER etc. */
uint16_t pageshift; /* log2 host pagesize */
/* content & interpretation depends on 'type' field */
uint64_t address; /* load address of "main binary" */
uint8_t uuid[16]; /* uuid of "main binary" */
uint64_t dyninfo; /* dynamic modules info */
};
#define proto_LC_FILEREF 0x141 /* unofficial value! */
#define FREF_ID_SHIFT 0
#define FREF_ID_MASK 0x7 /* up to 8 flavors */
typedef enum {
kFREF_ID_NONE = 0, /* file has no available verifying ID */
kFREF_ID_UUID = 1, /* file has an associated UUID */
kFREF_ID_MTIMESPEC_LE = 2, /* file has a specific mtime */
/* one day: file has a computed hash? */
} fref_type_t;
#define FREF_ID_TYPE(f) ((fref_type_t)(((f) >> FREF_ID_SHIFT) & FREF_ID_MASK))
#define FREF_MAKE_FLAGS(t) (((t) & FREF_ID_MASK) << FREF_ID_SHIFT)
struct proto_fileref_command {
uint32_t cmd; /* LC_FILEREF */
uint32_t cmdsize;
union lc_str filename; /* filename these bits come from */
uint8_t id[16]; /* uuid, size or hash etc. */
uint64_t vmaddr; /* memory address of this segment */
uint64_t vmsize; /* memory size of this segment */
uint64_t fileoff; /* file offset of this segment */
uint64_t filesize; /* amount to map from the file */
vm_prot_t maxprot; /* maximum VM protection */
vm_prot_t prot; /* current VM protection */
uint32_t flags;
uint8_t share_mode; /* SM_COW etc. */
uint8_t purgable; /* VM_PURGABLE_NONVOLATILE etc. */
uint8_t tag; /* VM_MEMORY_MALLOC etc. */
uint8_t extp; /* external pager */
};
#define proto_LC_COREDATA 0x142 /* unofficial value! */
/*
* These are flag bits for the segment_command 'flags' field.
*/
#define COMP_ALG_MASK 0x7
/* carve out 3 bits for an enum i.e. allow for 7 flavors */
#define COMP_ALG_SHIFT 4 /* (bottom 4 bits taken) */
/* zero -> no compression */
typedef enum {
kCOMP_NONE = 0,
kCOMP_LZ4 = 1, /* 0x100 */
kCOMP_ZLIB = 2, /* 0x205 */
kCOMP_LZMA = 3, /* 0x306 */
kCOMP_LZFSE = 4, /* 0x801 */
} compression_flavor_t;
#define COMP_ALG_TYPE(f) ((compression_flavor_t)((f) >> COMP_ALG_SHIFT) & COMP_ALG_MASK)
#define COMP_MAKE_FLAGS(t) (((t) & COMP_ALG_MASK) << COMP_ALG_SHIFT)
struct proto_coredata_command {
uint32_t cmd; /* LC_COREDATA */
uint32_t cmdsize;
uint64_t vmaddr; /* memory address of this segment */
uint64_t vmsize; /* memory size of this segment */
uint64_t fileoff; /* file offset of this segment */
uint64_t filesize; /* amount to map from the file */
vm_prot_t maxprot; /* maximum VM protection */
vm_prot_t prot; /* current VM protection */
uint32_t flags;
uint8_t share_mode; /* SM_COW etc. */
uint8_t purgable; /* VM_PURGABLE_NONVOLATILE etc. */
uint8_t tag; /* VM_MEMORY_MALLOC etc. */
uint8_t extp; /* external pager */
};
#endif /* _LOADER_ADDITIONS_H */
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