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{
This file is part of the Free Pascal run time library.
Copyright (c) 2008 by Giulio Bernardi
Constants used by Mach-O resource reader and writer
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
unit machoconsts;
{$MODE OBJFPC}
interface
uses
machotypes;
const
DataSegName : TSegSectName = '__DATA'+#0+#0+#0+#0+#0+#0+#0+#0+#0+#0;
RsrcSectName : TSegSectName = 'fpc.resources'+#0+#0+#0;
HandlesSectName : TSegSectName = 'fpc.reshandles'+#0+#0;
//private constants used by reader and writer only, not apple-defined
MACH_BIG_ENDIAN = 1;
MACH_LITTLE_ENDIAN = 2;
MACH_ERRBIT = 0;
MACH_32BIT = 1;
MACH_64BIT = 2;
//end of private constants
//Mach-O magic numbers
MH_MAGIC = $FEEDFACE;
MH_MAGIC_64 = $FEEDFACF;
MH_CIGAM = $CEFAEDFE;
MH_CIGAM_64 = $CFFAEDFE;
//Cpu types
CPU_ARCH_ABI64 = $1000000;
CPU_TYPE_ANY = -1;
CPU_TYPE_I386 = 7;
CPU_TYPE_X86_64 = CPU_TYPE_I386 or CPU_ARCH_ABI64;
CPU_TYPE_ARM = 12;
CPU_TYPE_POWERPC = 18;
CPU_TYPE_POWERPC64 = CPU_TYPE_POWERPC or CPU_ARCH_ABI64;
//Cpu subtypes
CPU_SUBTYPE_I386_ALL = 3;
CPU_SUBTYPE_X86_64_ALL = CPU_SUBTYPE_I386_ALL;
CPU_SUBTYPE_POWERPC_ALL = 0;
CPU_SUBTYPE_ARM_ALL = 0;
CPU_SUBTYPE_ARM_V4T = 5;
CPU_SUBTYPE_ARM_V6 = 6;
CPU_SUBTYPE_ARM_V5TEJ = 7;
CPU_SUBTYPE_ARM_XSCALE = 8;
CPU_SUBTYPE_ARM_V7 = 9;
//Mach-O object types
MH_OBJECT = $1; // relocatable object file
MH_EXECUTE = $2; // demand paged executable file
MH_FVMLIB = $3; // fixed VM shared library file
MH_CORE = $4; // core file
MH_PRELOAD = $5; // preloaded executable file
MH_DYLIB = $6; // dynamically bound shared library
MH_DYLINKER = $7; // dynamic link editor
MH_BUNDLE = $8; // dynamically bound bundle file
MH_DYLIB_STUB = $9; // shared library stub for static
// linking only, no section contents
//Mach-O object flags
MH_NOUNDEFS = $00001;
MH_INCRLINK = $00002;
MH_DYLDLINK = $00004;
MH_BINDATLOAD = $00008;
MH_PREBOUND = $00010;
MH_SPLIT_SEGS = $00020;
MH_TWOLEVEL = $00080;
MH_FORCE_FLAT = $00100;
MH_NOMULTIDEFS = $00200;
MH_NOFIXPREBINDING = $00400;
MH_PREBINDABLE = $00800;
MH_ALLMODSBOUND = $01000;
MH_SUBSECTIONS_VIA_SYMBOLS = $02000;
MH_CANONICAL = $04000;
MH_WEAK_DEFINES = $08000;
MH_BINDS_TO_WEAK = $10000;
//Load commands
LC_SEGMENT = $1; // segment of this file to be mapped
LC_SYMTAB = $2; // link-edit stab symbol table info
LC_SYMSEG = $3; // link-edit gdb symbol table info (obsolete)
LC_THREAD = $4; // thread
LC_UNIXTHREAD = $5; // unix thread (includes a stack)
LC_LOADFVMLIB = $6; // load a specified fixed VM shared library
LC_IDFVMLIB = $7; // fixed VM shared library identification
LC_DYSYMTAB = $b; // dynamic link-edit symbol table info
LC_LOAD_DYLIB = $c; // load a dynamically linked shared library
LC_ID_DYLIB = $d; // dynamically linked shared lib ident
LC_LOAD_DYLINKER = $e; // load a dynamic linker
LC_ID_DYLINKER = $f; // dynamic linker identification
LC_PREBOUND_DYLIB = $10; // modules prebound for a dynamically
// linked shared library
LC_ROUTINES = $11; // image routines
LC_SUB_FRAMEWORK = $12; // sub framework
LC_SUB_UMBRELLA = $13; // sub umbrella
LC_SUB_CLIENT = $14; // sub client
LC_SUB_LIBRARY = $15; // sub library
LC_TWOLEVEL_HINTS = $16; // two-level namespace lookup hints
LC_PREBIND_CKSUM = $17; // prebind checksum
LC_LOAD_WEAK_DYLIB= $80000018;
LC_SEGMENT_64 = $19; // 64-bit segment of this file to be mapped
LC_ROUTINES_64 = $1a; // 64-bit image routines
LC_UUID = $1b; // the uuid
//Segment: virtual memory protection
VM_PROT_NONE = $00;
VM_PROT_READ = $01; // read permission
VM_PROT_WRITE = $02; // write permission
VM_PROT_EXECUTE = $04; // execute permission
VM_PROT_DEFAULT = VM_PROT_READ or VM_PROT_WRITE;
VM_PROT_ALL = VM_PROT_READ or VM_PROT_WRITE or VM_PROT_EXECUTE;
VM_PROT_NO_CHANGE = $08;
VM_PROT_COPY = $10;
VM_PROT_WANTS_COPY = $10;
//Segment flags
SG_HIGHVM = $01;
SG_FVMLIB = $02;
SG_NORELOC = $04;
//Section type and attributes masks
SECTION_TYPE = $000000ff; // 256 section types
SECTION_ATTRIBUTES = $ffffff00; // 24 section attributes
//Section types
S_REGULAR = $0;
S_ZEROFILL = $1;
S_CSTRING_LITERALS = $2;
S_4BYTE_LITERALS = $3;
S_8BYTE_LITERALS = $4;
S_LITERAL_POINTERS = $5;
S_NON_LAZY_SYMBOL_POINTERS = $6;
S_LAZY_SYMBOL_POINTERS = $7;
S_SYMBOL_STUBS = $8;
S_MOD_INIT_FUNC_POINTERS = $9;
S_MOD_TERM_FUNC_POINTERS = $a;
S_COALESCED = $b;
S_GB_ZEROFILL = $c;
S_INTERPOSING = $d;
//Section attributes
SECTION_ATTRIBUTES_USR = $ff000000;
S_ATTR_PURE_INSTRUCTIONS = $80000000;
S_ATTR_NO_TOC = $40000000;
S_ATTR_STRIP_STATIC_SYMS = $20000000;
S_ATTR_NO_DEAD_STRIP = $10000000;
S_ATTR_LIVE_SUPPORT = $08000000;
SECTION_ATTRIBUTES_SYS = $00ffff00;
S_ATTR_SOME_INSTRUCTIONS = $00000400;
S_ATTR_EXT_RELOC = $00000200;
S_ATTR_LOC_RELOC = $00000100;
//Symbols: masks for type
N_STAB = $e0; // if any of these bits set, a symbolic debugging entry
N_PEXT = $10; // private external symbol bit
N_TYPE = $0e; // mask for the type bits
N_EXT = $01; // external symbol bit, set for external symbols
//values for type in the N_TYPE bits
N_UNDF = $0; // undefined, n_sect == NO_SECT
N_ABS = $2; // absolute, n_sect == NO_SECT
N_SECT = $e; // defined in section number n_sect
N_PBUD = $c; // prebound undefined (defined in a dylib)
N_INDR = $a; // indirect
//Relocations: masks for flag
R_SYMBOLNUM_BE = $FFFFFF00;
R_PCREL_BE = $00000080;
R_LENGTH_BE = $00000060;
R_EXTERN_BE = $00000010;
R_TYPE_BE = $0000000F;
R_SYMBOLNUM_LE = $00FFFFFF;
R_PCREL_LE = $01000000;
R_LENGTH_LE = $06000000;
R_EXTERN_LE = $08000000;
R_TYPE_LE = $F0000000;
//relocation types - powerpc
PPC_RELOC_VANILLA = 0; // generic relocation
//relocation types - i386
GENERIC_RELOC_VANILLA = 0; // generic relocation
//relocation types - x86_64
X86_64_RELOC_UNSIGNED = 0; // for absolute addresses
// relocation types - ARM
ARM_RELOC_VANILLA = 0; // generic relocation
implementation
end.
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