77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
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#pragma once
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#include "../binary.h"
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#include "headers/loader.h"
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#define CMD_ITERATE(hdr, cmd) \
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for(struct load_command *cmd = \
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(struct load_command *) ((uint32_t *) ((hdr) + 1) + (ADDR64 ? ((hdr)->magic & 1) : 0)), \
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*end = (struct load_command *) ((char *) cmd + (hdr)->sizeofcmds); \
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cmd < end; \
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cmd = (struct load_command *) ((char *) cmd + cmd->cmdsize))
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#define LC_SEGMENT_X sizeof(_spec_LC_SEGMENT_X)
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#define pointer_size_x sizeof(_spec_pointer_size_x)
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#define _MACHO_SPECIALIZE(_LC_SEGMENT_X, _segment_command_x, _section_x, _nlist_x, _pointer_size_x, text...) { \
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typedef struct _segment_command_x segment_command_x; \
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typedef struct _section_x section_x; \
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typedef struct _nlist_x nlist_x; \
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typedef char _spec_LC_SEGMENT_X[_LC_SEGMENT_X]; \
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typedef char _spec_pointer_size_x[_pointer_size_x]; \
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text \
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}
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#define _MACHO_SPECIALIZE_64(text...) _MACHO_SPECIALIZE(LC_SEGMENT_64, segment_command_64, section_64, nlist_64, 8, text)
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#define _MACHO_SPECIALIZE_32(text...) _MACHO_SPECIALIZE(LC_SEGMENT, segment_command, section, nlist, 4, text)
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#if ADDR64
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#define MACHO_SPECIALIZE(text...) _MACHO_SPECIALIZE_64(text) _MACHO_SPECIALIZE_32(text)
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#define MACHO_SPECIALIZE_POINTER_SIZE(binary, text...) \
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if(b_pointer_size(binary) == 8) _MACHO_SPECIALIZE_64(text) else _MACHO_SPECIALIZE_32(text)
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#else
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#define MACHO_SPECIALIZE(text...) _MACHO_SPECIALIZE_32(text)
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#define MACHO_SPECIALIZE_POINTER_SIZE(binary, text...) _MACHO_SPECIALIZE_32(text)
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#endif
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struct mach_binary {
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// this is unnecessary, don't use it
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struct mach_header *hdr;
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// this stuff is _all_ symbols...
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void *symtab; // either nlist or nlist_64
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uint32_t nsyms;
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// for b_sym (external stuff)
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struct nlist *ext_symtab, *imp_symtab;
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uint32_t ext_nsyms, imp_nsyms;
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// alternatively
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struct dyld_info_command *dyld_info;
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prange_t export_trie;
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addr_t export_baseaddr;
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char *strtab;
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uint32_t strsize;
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const struct dysymtab_command *dysymtab;
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};
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__BEGIN_DECLS
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static inline struct mach_header *b_mach_hdr(const struct binary *binary) {
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return (struct mach_header *) ((char *) binary->valid_range.start + binary->header_offset);
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}
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__attribute__((pure)) range_t b_macho_segrange(const struct binary *binary, const char *segname);
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__attribute__((pure)) range_t b_macho_sectrange(const struct binary *binary, const char *segname, const char *sectname);
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void b_prange_load_macho(struct binary *binary, prange_t range, size_t offset, const char *name);
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void b_prange_load_macho_nosyms(struct binary *binary, prange_t range, size_t offset, const char *name);
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void b_load_macho(struct binary *binary, const char *filename);
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void *b_macho_nth_symbol(const struct binary *binary, uint32_t n);
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addr_t b_macho_reloc_base(const struct binary *binary);
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const char *convert_lc_str(const struct load_command *cmd, uint32_t offset);
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__END_DECLS
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