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Diffstat (limited to 'output/macho.h')
| -rw-r--r-- | output/macho.h | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/output/macho.h b/output/macho.h new file mode 100644 index 00000000..538c531e --- /dev/null +++ b/output/macho.h @@ -0,0 +1,282 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 1996-2018 The NASM Authors - All Rights Reserved + * See the file AUTHORS included with the NASM distribution for + * the specific copyright holders. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following + * conditions are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * ----------------------------------------------------------------------- */ + +#ifndef OUTPUT_MACHO_H +#define OUTPUT_MACHO_H + +#include "compiler.h" + +/* Magics */ +#define MH_MAGIC 0xfeedface +#define MH_MAGIC_64 0xfeedfacf + +/* File types */ +#define MH_OBJECT 0x1 + +/* CPUs */ +#define CPU_ARCH_MASK 0xff000000 +#define CPU_ARCH_ABI64 0x01000000 +#define CPU_TYPE_X86 7 +#define CPU_TYPE_I386 CPU_TYPE_X86 +#define CPU_TYPE_X86_64 (CPU_TYPE_X86 | CPU_ARCH_ABI64) + +#define CPU_SUBTYPE_MASK 0xff000000 +#define CPU_SUBTYPE_I386_ALL 3 + +/* Header flags */ +#define MH_SUBSECTIONS_VIA_SYMBOLS 0x00002000 + +/* Load commands */ +#define LC_SEGMENT 0x1 +#define LC_SEGMENT_64 0x19 +#define LC_SYMTAB 0x2 + +/* Symbol type bits */ +#define N_STAB 0xe0 +#define N_PEXT 0x10 +#define N_TYPE 0x0e +#define N_EXT 0x01 + +/* To mask with N_TYPE */ +#define N_UNDF 0x00 +#define N_ABS 0x02 +#define N_INDR 0x0a +#define N_PBUD 0x0c +#define N_SECT 0x0e + +/* Section ordinals */ +#define NO_SECT 0x00 +#define MAX_SECT 0xff + +/* Section bits */ +#define SECTION_TYPE 0x000000ff +#define SECTION_ATTRIBUTES 0xffffff00 +#define SECTION_ATTRIBUTES_USR 0xff000000 +#define SECTION_ATTRIBUTES_SYS 0x00ffff00 + +#define S_REGULAR 0x00 +#define S_ZEROFILL 0x01 +#define S_CSTRING_LITERALS 0x02 +#define S_4BYTE_LITERALS 0x03 +#define S_8BYTE_LITERALS 0x04 +#define S_LITERAL_POINTERS 0x05 +#define S_NON_LAZY_SYMBOL_POINTERS 0x06 +#define S_LAZY_SYMBOL_POINTERS 0x07 +#define S_SYMBOL_STUBS 0x08 +#define S_MOD_INIT_FUNC_POINTERS 0x09 +#define S_MOD_TERM_FUNC_POINTERS 0x0a +#define S_COALESCED 0x0b +#define S_GB_ZEROFILL 0x0c +#define S_INTERPOSING 0x0d +#define S_16BYTE_LITERALS 0x0e +#define S_DTRACE_DOF 0x0f +#define S_LAZY_DYLIB_SYMBOL_POINTERS 0x10 +#define S_THREAD_LOCAL_REGULAR 0x11 +#define S_THREAD_LOCAL_ZEROFILL 0x12 +#define S_THREAD_LOCAL_VARIABLES 0x13 +#define S_THREAD_LOCAL_VARIABLE_POINTERS 0x14 +#define S_THREAD_LOCAL_INIT_FUNCTION_POINTERS 0x15 + +#define S_ATTR_PURE_INSTRUCTIONS 0x80000000 +#define S_ATTR_NO_TOC 0x40000000 +#define S_ATTR_STRIP_STATIC_SYMS 0x20000000 +#define S_ATTR_NO_DEAD_STRIP 0x10000000 +#define S_ATTR_LIVE_SUPPORT 0x08000000 +#define S_ATTR_SELF_MODIFYING_CODE 0x04000000 +#define S_ATTR_DEBUG 0x02000000 + +#define S_ATTR_SOME_INSTRUCTIONS 0x00000400 +#define S_ATTR_EXT_RELOC 0x00000200 +#define S_ATTR_LOC_RELOC 0x00000100 +#define INDIRECT_SYMBOL_LOCAL 0x80000000 +#define INDIRECT_SYMBOL_ABS 0x40000000 + +/* Relocation info type */ +#define GENERIC_RELOC_VANILLA 0 +#define GENERIC_RELOC_PAIR 1 +#define GENERIC_RELOC_SECTDIFF 2 +#define GENERIC_RELOC_PB_LA_PTR 3 +#define GENERIC_RELOC_LOCAL_SECTDIFF 4 +#define GENERIC_RELOC_TLV 5 + +#define X86_64_RELOC_UNSIGNED 0 +#define X86_64_RELOC_SIGNED 1 +#define X86_64_RELOC_BRANCH 2 +#define X86_64_RELOC_GOT_LOAD 3 +#define X86_64_RELOC_GOT 4 +#define X86_64_RELOC_SUBTRACTOR 5 +#define X86_64_RELOC_SIGNED_1 6 +#define X86_64_RELOC_SIGNED_2 7 +#define X86_64_RELOC_SIGNED_4 8 +#define X86_64_RELOC_TLV 9 + +/* Relocation info */ +#define R_ABS 0 +#define R_SCATTERED 0x80000000 + +/* VM permission constants */ +#define VM_PROT_NONE 0x00 +#define VM_PROT_READ 0x01 +#define VM_PROT_WRITE 0x02 +#define VM_PROT_EXECUTE 0x04 + +typedef struct { + uint32_t magic; + uint32_t cputype; + uint32_t cpusubtype; + uint32_t filetype; + uint32_t ncmds; + uint32_t sizeofcmds; + uint32_t flags; +} macho_header_t; + +typedef struct { + uint32_t magic; + uint32_t cputype; + uint32_t cpusubtype; + uint32_t filetype; + uint32_t ncmds; + uint32_t sizeofcmds; + uint32_t flags; + uint32_t reserved; +} macho_header_64_t; + +typedef struct { + uint32_t cmd; + uint32_t cmdsize; +} macho_load_command_t; + +typedef struct { + uint32_t cmd; + uint32_t cmdsize; + char segname[16]; + uint32_t vmaddr; + uint32_t vmsize; + uint32_t fileoff; + uint32_t filesize; + uint32_t maxprot; + uint32_t initprot; + uint32_t nsects; + uint32_t flags; +} macho_segment_command_t; + +typedef struct { + uint32_t cmd; + uint32_t cmdsize; + char segname[16]; + uint64_t vmaddr; + uint64_t vmsize; + uint64_t fileoff; + uint64_t filesize; + uint32_t maxprot; + uint32_t initprot; + uint32_t nsects; + uint32_t flags; +} macho_segment_command_64_t; + +typedef struct { + char sectname[16]; + char segname[16]; + uint32_t addr; + uint32_t size; + uint32_t offset; + uint32_t align; + uint32_t reloff; + uint32_t nreloc; + uint32_t flags; + uint32_t reserved1; + uint32_t reserved2; +} macho_section_t; + +typedef struct { + char sectname[16]; + char segname[16]; + uint64_t addr; + uint64_t size; + uint32_t offset; + uint32_t align; + uint32_t reloff; + uint32_t nreloc; + uint32_t flags; + uint32_t reserved1; + uint32_t reserved2; + uint32_t reserved3; +} macho_section_64_t; + +typedef struct { + uint32_t cmd; + uint32_t cmdsize; + uint32_t symoff; + uint32_t nsyms; + uint32_t stroff; + uint32_t strsize; +} macho_symtab_command_t; + +typedef struct { + int32_t r_address; + union { + struct { + uint32_t r_symbolnum: 24, + r_pcrel: 1, + r_length: 2, + r_extern: 1, + r_type: 4; + } s; + uint32_t r_raw; + } u; +} macho_relocation_info_t; + +typedef struct nlist_base { + uint32_t n_strx; + uint8_t n_type; + uint8_t n_sect; + uint16_t n_desc; +} macho_nlist_base_t; + +typedef struct nlist { + uint32_t n_strx; + uint8_t n_type; + uint8_t n_sect; + int16_t n_desc; + uint32_t n_value; +} macho_nlist_t; + +typedef struct { + uint32_t n_strx; + uint8_t n_type; + uint8_t n_sect; + uint16_t n_desc; + uint64_t n_value; +} macho_nlist_64_t; + +#endif /* OUTPUT_MACHO_H */ |