Retro68/gcc/libgo/go/debug/xcoff/xcoff.go
2018-12-28 16:30:48 +01:00

263 lines
8.7 KiB
Go

// Copyright 2017 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
// 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
)
// 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
}
// 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
)
// 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
}