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Diffstat (limited to '')
| -rw-r--r-- | includes/compiler/MachO.h | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/includes/compiler/MachO.h b/includes/compiler/MachO.h index eb8ad57..9be6c3e 100644 --- a/includes/compiler/MachO.h +++ b/includes/compiler/MachO.h @@ -2,5 +2,285 @@ #define COMPILER_MACHO_H #include "compiler/common.h" +#include "compiler/CompilerTools.h" + +typedef struct MachOReloc MachOReloc; +typedef struct MachOSection MachOSection; +typedef struct MachOSegment MachOSegment; +typedef struct MachOSymbol MachOSymbol; +typedef struct SymbolData SymbolData; + +struct SymbolData { + union { + char *name; + SInt32 strx; + } u; + UInt8 type; + SInt16 desc; + UInt32 value; + MachOSection *section; +}; + +typedef enum RelocType { + RT_0, + RT_1, + RT_2, + RT_3, + RT_4, + RT_5, + RT_6, + RT_7, + RT_8, + RT_9 +} RelocType; + +typedef struct RelocDataT { + RelocType type; + UInt8 privFlag; + UInt8 x2; + UInt8 x3; + UInt32 x4; + MachOSection *section; + UInt32 gapC; + MachOSection *sect10; + char *name; + SInt32 x18; +} RelocDataT; + +#define N_GSYM 0x20 +#define N_FNAME 0x22 +#define N_FUN 0x24 +#define N_STSYM 0x26 +#define N_LCSYM 0x28 +#define N_BNSYM 0x2E +#define N_OPT 0x3C +#define N_RSYM 0x40 +#define N_SLINE 0x44 +#define N_ENSYM 0x4E +#define N_SSYM 0x60 +#define N_SO 0x64 +#define N_OSO 0x66 +#define N_LSYM 0x80 +#define N_BINCL 0x82 +#define N_SOL 0x84 +#define N_PARAMS 0x86 +#define N_VERSION 0x88 +#define N_OLEVEL 0x8A +#define N_PSYM 0xA0 +#define N_EINCL 0xA2 +#define N_ENTRY 0xA4 +#define N_LBRAC 0xC0 +#define N_EXCL 0xC2 +#define N_RBRAC 0xE0 +#define N_BCOMM 0xE2 +#define N_ECOMM 0xE4 +#define N_ECOML 0xE8 +#define N_LENG 0xFE + +#define N_STAB 0xE0 +#define N_PEXT 0x10 +#define N_TYPE 0x0E +#define N_EXT 0x01 + +#define N_UNDF 0 +#define N_ABS 2 +#define N_SECT 0xE +#define N_PBUD 0xC +#define N_INDR 0xA + +// Mach-O header +struct mach_header { + uint32_t magic; + SInt32 cputype; + SInt32 cpusubtype; + uint32_t filetype; + uint32_t ncmds; + uint32_t sizeofcmds; + uint32_t flags; +}; + +#define MH_MAGIC 0xfeedface +#define MH_OBJECT 1 +#define CPU_TYPE_POWERPC 18 +#define CPU_SUBTYPE_MC98000_ALL 0 + +// load commands +#define LC_SEGMENT 1 +#define LC_SYMTAB 2 +#define LC_DYSYMTAB 11 + +// segments +struct segment_command { + uint32_t cmd; + uint32_t cmdsize; + char segname[16]; + uint32_t vmaddr; + uint32_t vmsize; + uint32_t fileoff; + uint32_t filesize; + SInt32 maxprot; + SInt32 initprot; + uint32_t nsects; + uint32_t flags; +}; + +// sections +struct section { + 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; +}; + +#define S_REGULAR 0 +#define S_ZEROFILL 1 +#define S_CSTRING_LITERALS 2 +#define S_4BYTE_LITERALS 3 +#define S_8BYTE_LITERALS 4 +#define S_LITERAL_POINTERS 5 +#define S_NON_LAZY_SYMBOL_POINTERS 6 +#define S_LAZY_SYMBOL_POINTERS 7 +#define S_SYMBOL_STUBS 8 +#define S_MOD_INIT_FUNC_POINTERS 9 +#define S_MOD_TERM_FUNC_POINTERS 10 +#define S_COALESCED 11 +#define S_GB_ZEROFILL 12 +#define S_INTERPOSING 13 +#define S_16BYTE_LITERALS 14 + +#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 0x8000000 +#define S_ATTR_SELF_MODIFYING_CODE 0x4000000 +#define S_ATTR_DBUG 0x2000000 +#define S_ATTR_SOME_INSTRUCTIONS 0x400 +#define S_ATTR_EXT_RELOC 0x200 +#define S_ATTR_LOC_RELOC 0x100 + +// symbols +struct symtab_command { + uint32_t cmd; + uint32_t cmdsize; + uint32_t symoff; + uint32_t nsyms; + uint32_t stroff; + uint32_t strsize; +}; + +struct dysymtab_command { + uint32_t cmd; + uint32_t cmdsize; + uint32_t ilocalsym; + uint32_t nlocalsym; + uint32_t iextdefsym; + uint32_t nextdefsym; + uint32_t iundefsym; + uint32_t nundefsym; + uint32_t tocoff; + uint32_t ntoc; + uint32_t modtaboff; + uint32_t nmodtab; + uint32_t extrefsymoff; + uint32_t nextrefsyms; + uint32_t indirectsymoff; + uint32_t nindirectsyms; + uint32_t extreloff; + uint32_t nextrel; + uint32_t locreloff; + uint32_t nlocrel; +}; + +struct nlist { + int32_t n_strx; + uint8_t n_type; + uint8_t n_sect; + int16_t n_desc; + uint32_t n_value; +}; + +// relocations +enum reloc_type_ppc { + PPC_RELOC_VANILLA, + PPC_RELOC_PAIR, + PPC_RELOC_BR14, + PPC_RELOC_BR24, + PPC_RELOC_HI16, + PPC_RELOC_LO16, + PPC_RELOC_HA16, + PPC_RELOC_LO14, + PPC_RELOC_SECTDIFF, + PPC_RELOC_PB_LA_PTR, + PPC_RELOC_HI16_SECTDIFF, + PPC_RELOC_LO16_SECTDIFF, + PPC_RELOC_HA16_SECTDIFF, + PPC_RELOC_JBSR, + PPC_RELOC_LO14_SECTDIFF, + PPC_RELOC_LOCAL_SECTDIFF +}; + +#define R_SCATTERED 0x80000000 + +#ifdef __MWERKS__ +#pragma options align=mac68k +#endif +struct MachOSection { + struct section section; + GList glist; + MachOReloc *firstReloc; + MachOReloc *lastReloc; + int x5C; + UInt32 num; + UInt32 id; + MachOSection *next; +}; + +struct MachOSegment { + struct segment_command cmd; + MachOSection *firstSection; + MachOSection *lastSection; + MachOSegment *next; +}; + +struct MachOReloc { + char length; // size of the relocation + char reltype; + char is_extern; + char is_pcrel; // was relocated pc relative already + UInt32 address; // offset to what is being relocated + UInt32 value; + MachOReloc *next; +}; + +struct MachOSymbol { + SymbolData data; + UInt32 index; + MachOSymbol *next; +}; +#ifdef __MWERKS__ +#pragma options align=reset +#endif + +extern void MachO_Setup(void); +extern void MachO_Finish(void); +extern void MachO_Cleanup(void); +extern MachOSegment *MachO_CreateSegment(char *segname, int maxprot, int initprot, UInt32 flags); +extern MachOSection *MachO_CreateSection(MachOSegment *segment, char *segname, char *sectname, UInt32 align, UInt32 flags, UInt32 sectionID); +extern GList *MachO_GetGList(MachOSection *section); +extern void MachO_SetSectionSize(void); +extern void MachO_Relocate(MachOSection *section, UInt32 address, UInt32 value, char length, char is_pcrel, Boolean is_extern, int reltype); +extern UInt32 MachO_DeclareSymbol(char *name, MachOSection *section, UInt32 value, Boolean isAbsolute, short type, short desc); +extern void MachO_ReOrderSections(void); +extern void MachO_AddIndirectSymbol(SInt32 symbol); +extern UInt32 MachO_NumIndirectSym(void); +extern SInt32 MachO_OutputStab(SymbolData *data, SInt32 strIndex); #endif |