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