Documentation
¶
Overview ¶
Package xcoff implements access to XCOFF (Extended Common Object File Format) files.
Index ¶
- Constants
- type Archive
- type ArchiveHeader
- type AuxCSect32
- type AuxCSect64
- type AuxFcn32
- type AuxFcn64
- type AuxFile64
- type AuxSect64
- type AuxiliaryCSect
- type AuxiliaryFcn
- type File
- func (f *File) CSect(name string) []byte
- func (f *File) Close() error
- func (f *File) DWARF() (*dwarf.Data, error)
- func (f *File) ImportedLibraries() ([]string, error)
- func (f *File) ImportedSymbols() ([]ImportedSymbol, error)
- func (f *File) Section(name string) *Section
- func (f *File) SectionByType(typ uint32) *Section
- type FileHeader
- type FileHeader32
- type FileHeader64
- type ImportedSymbol
- type LoaderHeader32
- type LoaderHeader64
- type LoaderSymbol32
- type LoaderSymbol64
- type Member
- type MemberHeader
- type Reloc
- type Reloc32
- type Reloc64
- type Section
- type SectionHeader
- type SectionHeader32
- type SectionHeader64
- type SymEnt32
- type SymEnt64
- type Symbol
Constants ¶
const ( SAIAMAG = 0x8 AIAFMAG = "`\n" AIAMAG = "<aiaff>\n" AIAMAGBIG = "<bigaf>\n" // Sizeof FL_HSZ_BIG = 0x80 AR_HSZ_BIG = 0x70 )
const ( FILHSZ_32 = 20 FILHSZ_64 = 24 )
const ( U802TOCMAGIC = 0737 // AIX 32-bit XCOFF U64_TOCMAGIC = 0767 // AIX 64-bit XCOFF )
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 )
Flags that describe the type of the object file.
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 )
Flags defining the section type.
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 )
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 )
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 )
Storage Class.
const ( XTY_ER = 0 // External reference XTY_SD = 1 // Section definition XTY_LD = 2 // Label definition XTY_CM = 3 // Common csect definition )
Symbol type field.
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 )
Defines for File auxiliary definitions: x_ftype field of x_file
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 )
Storage-mapping class.
const ( LDHDRSZ_32 = 32 LDHDRSZ_64 = 56 )
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 )
const SYMESZ = 18
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Archive ¶
type Archive struct {
ArchiveHeader
Members []*Member
// contains filtered or unexported fields
}
Archive represents an open AIX big archive.
func NewArchive ¶
NewArchive creates a new Archive for accessing an AIX big archive in an underlying reader.
func OpenArchive ¶
OpenArchive opens the named archive using os.Open and prepares it for use as an AIX big archive.
type ArchiveHeader ¶
type ArchiveHeader struct {
// contains filtered or unexported fields
}
MemberHeader holds information about a big archive file header
type AuxCSect32 ¶
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
}
csect Auxiliary Entry.
type AuxCSect64 ¶
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
}
type AuxFcn32 ¶
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
}
Function Auxiliary Entry
type AuxFile64 ¶
type AuxFile64 struct {
Xfname [8]byte // Name or offset inside string table
Xftype uint8 // Source file string type
Xauxtype uint8 // Type of auxiliary entry
}
File Auxiliary Entry
type AuxiliaryCSect ¶
AuxiliaryCSect holds information about an XCOFF symbol in an AUX_CSECT entry.
type AuxiliaryFcn ¶
type AuxiliaryFcn struct {
Size int64
}
AuxiliaryFcn holds information about an XCOFF symbol in an AUX_FCN entry.
type File ¶
type File struct {
FileHeader
Sections []*Section
Symbols []*Symbol
StringTable []byte
LibraryPaths []string
// contains filtered or unexported fields
}
A File represents an open XCOFF file.
func (*File) Close ¶
Close closes the File. If the File was created using NewFile directly instead of Open, Close has no effect.
func (*File) ImportedLibraries ¶
ImportedLibraries returns the names of all libraries referred to by the binary f that are expected to be linked with the binary at dynamic link time.
func (*File) ImportedSymbols ¶
func (f *File) ImportedSymbols() ([]ImportedSymbol, error)
ImportedSymbols returns the names of all symbols referred to by the binary f that are expected to be satisfied by other libraries at dynamic load time. It does not return weak symbols.
func (*File) Section ¶
Section returns the first section with the given name, or nil if no such section exists. Xcoff have section's name limited to 8 bytes. Some sections like .gosymtab can be trunked but this method will still find them.
func (*File) SectionByType ¶
SectionByType returns the first section in f with the given type, or nil if there is no such section.
type FileHeader ¶
type FileHeader struct {
TargetMachine uint16
}
FileHeader holds information about an XCOFF file header.
type FileHeader32 ¶
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
}
File Header.
type FileHeader64 ¶
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
}
type ImportedSymbol ¶
ImportedSymbol holds information about an imported XCOFF symbol.
type LoaderHeader32 ¶
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
}
Loader Header.
type LoaderHeader64 ¶
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
}
type LoaderSymbol32 ¶
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
}
Loader Symbol.
type LoaderSymbol64 ¶
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 Member ¶
type Member struct {
MemberHeader
// contains filtered or unexported fields
}
Member represents a member of an AIX big archive.
type MemberHeader ¶
MemberHeader holds information about a big archive member
type Section ¶
type Section struct {
SectionHeader
Relocs []Reloc
io.ReaderAt
// contains filtered or unexported fields
}
type SectionHeader ¶
type SectionHeader struct {
Name string
VirtualAddress uint64
Size uint64
Type uint32
Relptr uint64
Nreloc uint32
}
SectionHeader holds information about an XCOFF section header.
type SectionHeader32 ¶
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
}
Section Header.
type SectionHeader64 ¶
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
}
type SymEnt32 ¶
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
}
Symbol Table Entry.
type SymEnt64 ¶
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
}
type Symbol ¶
type Symbol struct {
Name string
Value uint64
SectionNumber int
StorageClass int
AuxFcn AuxiliaryFcn
AuxCSect AuxiliaryCSect
}