| // Copyright 2018 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package xcoff |
| |
| // File Header. |
| type FileHeader32 struct { |
| Fmagic uint16 // Target machine |
| Fnscns uint16 // Number of sections |
| Ftimedat int32 // Time and date of file creation |
| Fsymptr uint32 // Byte offset to symbol table start |
| Fnsyms int32 // Number of entries in symbol table |
| Fopthdr uint16 // Number of bytes in optional header |
| Fflags uint16 // Flags |
| } |
| |
| type FileHeader64 struct { |
| Fmagic uint16 // Target machine |
| Fnscns uint16 // Number of sections |
| Ftimedat int32 // Time and date of file creation |
| Fsymptr uint64 // Byte offset to symbol table start |
| Fopthdr uint16 // Number of bytes in optional header |
| Fflags uint16 // Flags |
| Fnsyms int32 // Number of entries in symbol table |
| } |
| |
| const ( |
| FILHSZ_32 = 20 |
| FILHSZ_64 = 24 |
| ) |
| const ( |
| U802TOCMAGIC = 0737 // AIX 32-bit XCOFF |
| U64_TOCMAGIC = 0767 // AIX 64-bit XCOFF |
| ) |
| |
| // Flags that describe the type of the object file. |
| const ( |
| F_RELFLG = 0x0001 |
| F_EXEC = 0x0002 |
| F_LNNO = 0x0004 |
| F_FDPR_PROF = 0x0010 |
| F_FDPR_OPTI = 0x0020 |
| F_DSA = 0x0040 |
| F_VARPG = 0x0100 |
| F_DYNLOAD = 0x1000 |
| F_SHROBJ = 0x2000 |
| F_LOADONLY = 0x4000 |
| ) |
| |
| // Section Header. |
| type SectionHeader32 struct { |
| Sname [8]byte // Section name |
| Spaddr uint32 // Physical address |
| Svaddr uint32 // Virtual address |
| Ssize uint32 // Section size |
| Sscnptr uint32 // Offset in file to raw data for section |
| Srelptr uint32 // Offset in file to relocation entries for section |
| Slnnoptr uint32 // Offset in file to line number entries for section |
| Snreloc uint16 // Number of relocation entries |
| Snlnno uint16 // Number of line number entries |
| Sflags uint32 // Flags to define the section type |
| } |
| |
| type SectionHeader64 struct { |
| Sname [8]byte // Section name |
| Spaddr uint64 // Physical address |
| Svaddr uint64 // Virtual address |
| Ssize uint64 // Section size |
| Sscnptr uint64 // Offset in file to raw data for section |
| Srelptr uint64 // Offset in file to relocation entries for section |
| Slnnoptr uint64 // Offset in file to line number entries for section |
| Snreloc uint32 // Number of relocation entries |
| Snlnno uint32 // Number of line number entries |
| Sflags uint32 // Flags to define the section type |
| Spad uint32 // Needs to be 72 bytes long |
| } |
| |
| // Flags defining the section type. |
| const ( |
| STYP_DWARF = 0x0010 |
| STYP_TEXT = 0x0020 |
| STYP_DATA = 0x0040 |
| STYP_BSS = 0x0080 |
| STYP_EXCEPT = 0x0100 |
| STYP_INFO = 0x0200 |
| STYP_TDATA = 0x0400 |
| STYP_TBSS = 0x0800 |
| STYP_LOADER = 0x1000 |
| STYP_DEBUG = 0x2000 |
| STYP_TYPCHK = 0x4000 |
| STYP_OVRFLO = 0x8000 |
| ) |
| const ( |
| SSUBTYP_DWINFO = 0x10000 // DWARF info section |
| SSUBTYP_DWLINE = 0x20000 // DWARF line-number section |
| SSUBTYP_DWPBNMS = 0x30000 // DWARF public names section |
| SSUBTYP_DWPBTYP = 0x40000 // DWARF public types section |
| SSUBTYP_DWARNGE = 0x50000 // DWARF aranges section |
| SSUBTYP_DWABREV = 0x60000 // DWARF abbreviation section |
| SSUBTYP_DWSTR = 0x70000 // DWARF strings section |
| SSUBTYP_DWRNGES = 0x80000 // DWARF ranges section |
| SSUBTYP_DWLOC = 0x90000 // DWARF location lists section |
| SSUBTYP_DWFRAME = 0xA0000 // DWARF frames section |
| SSUBTYP_DWMAC = 0xB0000 // DWARF macros section |
| ) |
| |
| // Symbol Table Entry. |
| type SymEnt32 struct { |
| Nname [8]byte // Symbol name |
| Nvalue uint32 // Symbol value |
| Nscnum int16 // Section number of symbol |
| Ntype uint16 // Basic and derived type specification |
| Nsclass int8 // Storage class of symbol |
| Nnumaux int8 // Number of auxiliary entries |
| } |
| |
| type SymEnt64 struct { |
| Nvalue uint64 // Symbol value |
| Noffset uint32 // Offset of the name in string table or .debug section |
| Nscnum int16 // Section number of symbol |
| Ntype uint16 // Basic and derived type specification |
| Nsclass int8 // Storage class of symbol |
| Nnumaux int8 // Number of auxiliary entries |
| } |
| |
| const SYMESZ = 18 |
| |
| const ( |
| // Nscnum |
| N_DEBUG = -2 |
| N_ABS = -1 |
| N_UNDEF = 0 |
| |
| //Ntype |
| SYM_V_INTERNAL = 0x1000 |
| SYM_V_HIDDEN = 0x2000 |
| SYM_V_PROTECTED = 0x3000 |
| SYM_V_EXPORTED = 0x4000 |
| SYM_TYPE_FUNC = 0x0020 // is function |
| ) |
| |
| // Storage Class. |
| const ( |
| C_NULL = 0 // Symbol table entry marked for deletion |
| C_EXT = 2 // External symbol |
| C_STAT = 3 // Static symbol |
| C_BLOCK = 100 // Beginning or end of inner block |
| C_FCN = 101 // Beginning or end of function |
| C_FILE = 103 // Source file name and compiler information |
| C_HIDEXT = 107 // Unnamed external symbol |
| C_BINCL = 108 // Beginning of include file |
| C_EINCL = 109 // End of include file |
| C_WEAKEXT = 111 // Weak external symbol |
| C_DWARF = 112 // DWARF symbol |
| C_GSYM = 128 // Global variable |
| C_LSYM = 129 // Automatic variable allocated on stack |
| C_PSYM = 130 // Argument to subroutine allocated on stack |
| C_RSYM = 131 // Register variable |
| C_RPSYM = 132 // Argument to function or procedure stored in register |
| C_STSYM = 133 // Statically allocated symbol |
| C_BCOMM = 135 // Beginning of common block |
| C_ECOML = 136 // Local member of common block |
| C_ECOMM = 137 // End of common block |
| C_DECL = 140 // Declaration of object |
| C_ENTRY = 141 // Alternate entry |
| C_FUN = 142 // Function or procedure |
| C_BSTAT = 143 // Beginning of static block |
| C_ESTAT = 144 // End of static block |
| C_GTLS = 145 // Global thread-local variable |
| C_STTLS = 146 // Static thread-local variable |
| ) |
| |
| // File Auxiliary Entry |
| type AuxFile64 struct { |
| Xfname [8]byte // Name or offset inside string table |
| Xftype uint8 // Source file string type |
| Xauxtype uint8 // Type of auxiliary entry |
| } |
| |
| // Function Auxiliary Entry |
| type AuxFcn32 struct { |
| Xexptr uint32 // File offset to exception table entry |
| Xfsize uint32 // Size of function in bytes |
| Xlnnoptr uint32 // File pointer to line number |
| Xendndx uint32 // Symbol table index of next entry |
| Xpad uint16 // Unused |
| } |
| type AuxFcn64 struct { |
| Xlnnoptr uint64 // File pointer to line number |
| Xfsize uint32 // Size of function in bytes |
| Xendndx uint32 // Symbol table index of next entry |
| Xpad uint8 // Unused |
| Xauxtype uint8 // Type of auxiliary entry |
| } |
| |
| type AuxSect64 struct { |
| Xscnlen uint64 // section length |
| Xnreloc uint64 // Num RLDs |
| pad uint8 |
| Xauxtype uint8 // Type of auxiliary entry |
| } |
| |
| // csect Auxiliary Entry. |
| type AuxCSect32 struct { |
| Xscnlen int32 // Length or symbol table index |
| Xparmhash uint32 // Offset of parameter type-check string |
| Xsnhash uint16 // .typchk section number |
| Xsmtyp uint8 // Symbol alignment and type |
| Xsmclas uint8 // Storage-mapping class |
| Xstab uint32 // Reserved |
| Xsnstab uint16 // Reserved |
| } |
| |
| type AuxCSect64 struct { |
| Xscnlenlo uint32 // Lower 4 bytes of length or symbol table index |
| Xparmhash uint32 // Offset of parameter type-check string |
| Xsnhash uint16 // .typchk section number |
| Xsmtyp uint8 // Symbol alignment and type |
| Xsmclas uint8 // Storage-mapping class |
| Xscnlenhi int32 // Upper 4 bytes of length or symbol table index |
| Xpad uint8 // Unused |
| Xauxtype uint8 // Type of auxiliary entry |
| } |
| |
| // Auxiliary type |
| const ( |
| _AUX_EXCEPT = 255 |
| _AUX_FCN = 254 |
| _AUX_SYM = 253 |
| _AUX_FILE = 252 |
| _AUX_CSECT = 251 |
| _AUX_SECT = 250 |
| ) |
| |
| // Symbol type field. |
| const ( |
| XTY_ER = 0 // External reference |
| XTY_SD = 1 // Section definition |
| XTY_LD = 2 // Label definition |
| XTY_CM = 3 // Common csect definition |
| ) |
| |
| // Defines for File auxiliary definitions: x_ftype field of x_file |
| const ( |
| XFT_FN = 0 // Source File Name |
| XFT_CT = 1 // Compile Time Stamp |
| XFT_CV = 2 // Compiler Version Number |
| XFT_CD = 128 // Compiler Defined Information |
| ) |
| |
| // Storage-mapping class. |
| const ( |
| XMC_PR = 0 // Program code |
| XMC_RO = 1 // Read-only constant |
| XMC_DB = 2 // Debug dictionary table |
| XMC_TC = 3 // TOC entry |
| XMC_UA = 4 // Unclassified |
| XMC_RW = 5 // Read/Write data |
| XMC_GL = 6 // Global linkage |
| XMC_XO = 7 // Extended operation |
| XMC_SV = 8 // 32-bit supervisor call descriptor |
| XMC_BS = 9 // BSS class |
| XMC_DS = 10 // Function descriptor |
| XMC_UC = 11 // Unnamed FORTRAN common |
| XMC_TC0 = 15 // TOC anchor |
| XMC_TD = 16 // Scalar data entry in the TOC |
| XMC_SV64 = 17 // 64-bit supervisor call descriptor |
| XMC_SV3264 = 18 // Supervisor call descriptor for both 32-bit and 64-bit |
| XMC_TL = 20 // Read/Write thread-local data |
| XMC_UL = 21 // Read/Write thread-local data (.tbss) |
| XMC_TE = 22 // TOC entry |
| ) |
| |
| // Loader Header. |
| type LoaderHeader32 struct { |
| Lversion int32 // Loader section version number |
| Lnsyms int32 // Number of symbol table entries |
| Lnreloc int32 // Number of relocation table entries |
| Listlen uint32 // Length of import file ID string table |
| Lnimpid int32 // Number of import file IDs |
| Limpoff uint32 // Offset to start of import file IDs |
| Lstlen uint32 // Length of string table |
| Lstoff uint32 // Offset to start of string table |
| } |
| |
| type LoaderHeader64 struct { |
| Lversion int32 // Loader section version number |
| Lnsyms int32 // Number of symbol table entries |
| Lnreloc int32 // Number of relocation table entries |
| Listlen uint32 // Length of import file ID string table |
| Lnimpid int32 // Number of import file IDs |
| Lstlen uint32 // Length of string table |
| Limpoff uint64 // Offset to start of import file IDs |
| Lstoff uint64 // Offset to start of string table |
| Lsymoff uint64 // Offset to start of symbol table |
| Lrldoff uint64 // Offset to start of relocation entries |
| } |
| |
| const ( |
| LDHDRSZ_32 = 32 |
| LDHDRSZ_64 = 56 |
| ) |
| |
| // Loader Symbol. |
| type LoaderSymbol32 struct { |
| Lname [8]byte // Symbol name or byte offset into string table |
| Lvalue uint32 // Address field |
| Lscnum int16 // Section number containing symbol |
| Lsmtype int8 // Symbol type, export, import flags |
| Lsmclas int8 // Symbol storage class |
| Lifile int32 // Import file ID; ordinal of import file IDs |
| Lparm uint32 // Parameter type-check field |
| } |
| |
| type LoaderSymbol64 struct { |
| Lvalue uint64 // Address field |
| Loffset uint32 // Byte offset into string table of symbol name |
| Lscnum int16 // Section number containing symbol |
| Lsmtype int8 // Symbol type, export, import flags |
| Lsmclas int8 // Symbol storage class |
| Lifile int32 // Import file ID; ordinal of import file IDs |
| Lparm uint32 // Parameter type-check field |
| } |
| |
| type Reloc32 struct { |
| Rvaddr uint32 // (virtual) address of reference |
| Rsymndx uint32 // Index into symbol table |
| Rsize uint8 // Sign and reloc bit len |
| Rtype uint8 // Toc relocation type |
| } |
| |
| type Reloc64 struct { |
| Rvaddr uint64 // (virtual) address of reference |
| Rsymndx uint32 // Index into symbol table |
| Rsize uint8 // Sign and reloc bit len |
| Rtype uint8 // Toc relocation type |
| } |
| |
| const ( |
| R_POS = 0x00 // A(sym) Positive Relocation |
| R_NEG = 0x01 // -A(sym) Negative Relocation |
| R_REL = 0x02 // A(sym-*) Relative to self |
| R_TOC = 0x03 // A(sym-TOC) Relative to TOC |
| R_TRL = 0x12 // A(sym-TOC) TOC Relative indirect load. |
| |
| R_TRLA = 0x13 // A(sym-TOC) TOC Rel load address. modifiable inst |
| R_GL = 0x05 // A(external TOC of sym) Global Linkage |
| R_TCL = 0x06 // A(local TOC of sym) Local object TOC address |
| R_RL = 0x0C // A(sym) Pos indirect load. modifiable instruction |
| R_RLA = 0x0D // A(sym) Pos Load Address. modifiable instruction |
| R_REF = 0x0F // AL0(sym) Non relocating ref. No garbage collect |
| R_BA = 0x08 // A(sym) Branch absolute. Cannot modify instruction |
| R_RBA = 0x18 // A(sym) Branch absolute. modifiable instruction |
| R_BR = 0x0A // A(sym-*) Branch rel to self. non modifiable |
| R_RBR = 0x1A // A(sym-*) Branch rel to self. modifiable instr |
| |
| R_TLS = 0x20 // General-dynamic reference to TLS symbol |
| R_TLS_IE = 0x21 // Initial-exec reference to TLS symbol |
| R_TLS_LD = 0x22 // Local-dynamic reference to TLS symbol |
| R_TLS_LE = 0x23 // Local-exec reference to TLS symbol |
| R_TLSM = 0x24 // Module reference to TLS symbol |
| R_TLSML = 0x25 // Module reference to local (own) module |
| |
| R_TOCU = 0x30 // Relative to TOC - high order bits |
| R_TOCL = 0x31 // Relative to TOC - low order bits |
| ) |
