2022-11-20 05:07:22 +00:00
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#ifndef COMPILER_MACHO_H
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#define COMPILER_MACHO_H
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#include "compiler/common.h"
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2022-12-29 12:32:55 +00:00
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#include "compiler/CompilerTools.h"
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typedef struct MachOReloc MachOReloc;
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typedef struct MachOSection MachOSection;
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typedef struct MachOSegment MachOSegment;
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typedef struct MachOSymbol MachOSymbol;
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typedef struct SymbolData SymbolData;
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struct SymbolData {
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union {
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char *name;
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SInt32 strx;
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} u;
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UInt8 type;
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SInt16 desc;
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UInt32 value;
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MachOSection *section;
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};
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typedef enum RelocType {
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RT_0,
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RT_1,
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RT_2,
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RT_3,
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RT_4,
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RT_5,
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RT_6,
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RT_7,
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RT_8,
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RT_9
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} RelocType;
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typedef struct RelocDataT {
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RelocType type;
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UInt8 privFlag;
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UInt8 x2;
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UInt8 x3;
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UInt32 x4;
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MachOSection *section;
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UInt32 gapC;
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MachOSection *sect10;
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char *name;
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SInt32 x18;
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} RelocDataT;
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#define N_GSYM 0x20
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#define N_FNAME 0x22
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#define N_FUN 0x24
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#define N_STSYM 0x26
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#define N_LCSYM 0x28
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#define N_BNSYM 0x2E
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#define N_OPT 0x3C
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#define N_RSYM 0x40
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#define N_SLINE 0x44
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#define N_ENSYM 0x4E
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#define N_SSYM 0x60
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#define N_SO 0x64
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#define N_OSO 0x66
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#define N_LSYM 0x80
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#define N_BINCL 0x82
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#define N_SOL 0x84
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#define N_PARAMS 0x86
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#define N_VERSION 0x88
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#define N_OLEVEL 0x8A
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#define N_PSYM 0xA0
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#define N_EINCL 0xA2
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#define N_ENTRY 0xA4
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#define N_LBRAC 0xC0
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#define N_EXCL 0xC2
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#define N_RBRAC 0xE0
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#define N_BCOMM 0xE2
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#define N_ECOMM 0xE4
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#define N_ECOML 0xE8
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#define N_LENG 0xFE
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#define N_STAB 0xE0
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#define N_PEXT 0x10
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#define N_TYPE 0x0E
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#define N_EXT 0x01
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#define N_UNDF 0
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#define N_ABS 2
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#define N_SECT 0xE
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#define N_PBUD 0xC
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#define N_INDR 0xA
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// Mach-O header
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struct mach_header {
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uint32_t magic;
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SInt32 cputype;
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SInt32 cpusubtype;
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uint32_t filetype;
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uint32_t ncmds;
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uint32_t sizeofcmds;
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uint32_t flags;
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};
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#define MH_MAGIC 0xfeedface
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#define MH_OBJECT 1
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#define CPU_TYPE_POWERPC 18
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#define CPU_SUBTYPE_MC98000_ALL 0
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// load commands
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#define LC_SEGMENT 1
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#define LC_SYMTAB 2
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#define LC_DYSYMTAB 11
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// segments
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struct segment_command {
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uint32_t cmd;
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uint32_t cmdsize;
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char segname[16];
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uint32_t vmaddr;
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uint32_t vmsize;
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uint32_t fileoff;
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uint32_t filesize;
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SInt32 maxprot;
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SInt32 initprot;
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uint32_t nsects;
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uint32_t flags;
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};
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// sections
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struct section {
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char sectname[16];
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char segname[16];
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uint32_t addr;
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uint32_t size;
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uint32_t offset;
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uint32_t align;
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uint32_t reloff;
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uint32_t nreloc;
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uint32_t flags;
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uint32_t reserved1;
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uint32_t reserved2;
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};
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#define S_REGULAR 0
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#define S_ZEROFILL 1
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#define S_CSTRING_LITERALS 2
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#define S_4BYTE_LITERALS 3
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#define S_8BYTE_LITERALS 4
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#define S_LITERAL_POINTERS 5
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#define S_NON_LAZY_SYMBOL_POINTERS 6
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#define S_LAZY_SYMBOL_POINTERS 7
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#define S_SYMBOL_STUBS 8
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#define S_MOD_INIT_FUNC_POINTERS 9
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#define S_MOD_TERM_FUNC_POINTERS 10
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#define S_COALESCED 11
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#define S_GB_ZEROFILL 12
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#define S_INTERPOSING 13
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#define S_16BYTE_LITERALS 14
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#define S_ATTR_PURE_INSTRUCTIONS 0x80000000
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#define S_ATTR_NO_TOC 0x40000000
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#define S_ATTR_STRIP_STATIC_SYMS 0x20000000
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#define S_ATTR_NO_DEAD_STRIP 0x10000000
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#define S_ATTR_LIVE_SUPPORT 0x8000000
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#define S_ATTR_SELF_MODIFYING_CODE 0x4000000
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#define S_ATTR_DBUG 0x2000000
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#define S_ATTR_SOME_INSTRUCTIONS 0x400
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#define S_ATTR_EXT_RELOC 0x200
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#define S_ATTR_LOC_RELOC 0x100
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// symbols
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struct symtab_command {
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uint32_t cmd;
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uint32_t cmdsize;
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uint32_t symoff;
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uint32_t nsyms;
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uint32_t stroff;
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uint32_t strsize;
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};
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struct dysymtab_command {
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uint32_t cmd;
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uint32_t cmdsize;
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uint32_t ilocalsym;
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uint32_t nlocalsym;
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uint32_t iextdefsym;
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uint32_t nextdefsym;
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uint32_t iundefsym;
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uint32_t nundefsym;
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uint32_t tocoff;
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uint32_t ntoc;
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uint32_t modtaboff;
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uint32_t nmodtab;
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uint32_t extrefsymoff;
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uint32_t nextrefsyms;
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uint32_t indirectsymoff;
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uint32_t nindirectsyms;
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uint32_t extreloff;
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uint32_t nextrel;
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uint32_t locreloff;
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uint32_t nlocrel;
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};
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struct nlist {
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int32_t n_strx;
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uint8_t n_type;
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uint8_t n_sect;
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int16_t n_desc;
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uint32_t n_value;
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};
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// relocations
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enum reloc_type_ppc {
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PPC_RELOC_VANILLA,
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PPC_RELOC_PAIR,
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PPC_RELOC_BR14,
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PPC_RELOC_BR24,
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PPC_RELOC_HI16,
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PPC_RELOC_LO16,
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PPC_RELOC_HA16,
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PPC_RELOC_LO14,
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PPC_RELOC_SECTDIFF,
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PPC_RELOC_PB_LA_PTR,
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PPC_RELOC_HI16_SECTDIFF,
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PPC_RELOC_LO16_SECTDIFF,
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PPC_RELOC_HA16_SECTDIFF,
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PPC_RELOC_JBSR,
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PPC_RELOC_LO14_SECTDIFF,
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PPC_RELOC_LOCAL_SECTDIFF
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};
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#define R_SCATTERED 0x80000000
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#ifdef __MWERKS__
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#pragma options align=mac68k
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#endif
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struct MachOSection {
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struct section section;
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GList glist;
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MachOReloc *firstReloc;
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MachOReloc *lastReloc;
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int x5C;
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UInt32 num;
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UInt32 id;
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MachOSection *next;
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};
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struct MachOSegment {
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struct segment_command cmd;
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MachOSection *firstSection;
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MachOSection *lastSection;
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MachOSegment *next;
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};
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struct MachOReloc {
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char length; // size of the relocation
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char reltype;
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char is_extern;
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char is_pcrel; // was relocated pc relative already
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UInt32 address; // offset to what is being relocated
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UInt32 value;
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MachOReloc *next;
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};
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struct MachOSymbol {
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SymbolData data;
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UInt32 index;
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MachOSymbol *next;
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};
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#ifdef __MWERKS__
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#pragma options align=reset
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#endif
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extern void MachO_Setup(void);
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extern void MachO_Finish(void);
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extern void MachO_Cleanup(void);
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extern MachOSegment *MachO_CreateSegment(char *segname, int maxprot, int initprot, UInt32 flags);
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extern MachOSection *MachO_CreateSection(MachOSegment *segment, char *segname, char *sectname, UInt32 align, UInt32 flags, UInt32 sectionID);
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extern GList *MachO_GetGList(MachOSection *section);
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extern void MachO_SetSectionSize(void);
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extern void MachO_Relocate(MachOSection *section, UInt32 address, UInt32 value, char length, char is_pcrel, Boolean is_extern, int reltype);
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extern UInt32 MachO_DeclareSymbol(char *name, MachOSection *section, UInt32 value, Boolean isAbsolute, short type, short desc);
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extern void MachO_ReOrderSections(void);
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extern void MachO_AddIndirectSymbol(SInt32 symbol);
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extern UInt32 MachO_NumIndirectSym(void);
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extern SInt32 MachO_OutputStab(SymbolData *data, SInt32 strIndex);
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2022-11-20 05:07:22 +00:00
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#endif
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