/* Internal format of COFF object file data structures, for GNU BFD.   This file is part of BFD, the Binary File Descriptor library.    Copyright (C) 1999-2026 Free Software Foundation, Inc.    This program is free software; you can redistribute it and/or modify   it under the terms of the GNU General Public License as published by   the Free Software Foundation; either version 3 of the License, or   (at your option) any later version.    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.  See the   GNU General Public License for more details.    You should have received a copy of the GNU General Public License   along with this program; if not, write to the Free Software   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,   MA 02110-1301, USA.  */ #ifndef GNU_COFF_INTERNAL_H#define GNU_COFF_INTERNAL_H 1 /* extra stuff in a PE header. */ struct internal_extra_pe_filehdr{  /* DOS header data follows for PE stuff */  unsigned short e_magic;	/* Magic number, 0x5a4d */  unsigned short e_cblp;	/* Bytes on last page of file, 0x90 */  unsigned short e_cp;		/* Pages in file, 0x3 */  unsigned short e_crlc;	/* Relocations, 0x0 */  unsigned short e_cparhdr;	/* Size of header in paragraphs, 0x4 */  unsigned short e_minalloc;	/* Minimum extra paragraphs needed, 0x0 */  unsigned short e_maxalloc;	/* Maximum extra paragraphs needed, 0xFFFF */  unsigned short e_ss;		/* Initial (relative) SS value, 0x0 */  unsigned short e_sp;		/* Initial SP value, 0xb8 */  unsigned short e_csum;	/* Checksum, 0x0 */  unsigned short e_ip;		/* Initial IP value, 0x0 */  unsigned short e_cs;		/* Initial (relative) CS value, 0x0 */  unsigned short e_lfarlc;	/* File address of relocation table, 0x40 */  unsigned short e_ovno;	/* Overlay number, 0x0 */  unsigned short e_res[4];	/* Reserved words, all 0x0 */  unsigned short e_oemid;	/* OEM identifier (for e_oeminfo), 0x0 */  unsigned short e_oeminfo;	/* OEM information; e_oemid specific, 0x0 */  unsigned short e_res2[10];	/* Reserved words, all 0x0 */  bfd_vma  e_lfanew;		/* File address of new exe header, 0x80 */  char dos_message[64];		/* Text which always follows DOS header.  */  bfd_vma  nt_signature;	/* required NT signature, 0x4550 */}; struct internal_filehdr{  struct internal_extra_pe_filehdr pe;   /* Standard coff internal info.  */  unsigned short f_magic;	/* magic number			*/  unsigned int   f_nscns;	/* number of sections		*/  long f_timdat;		/* time & date stamp		*/  bfd_vma f_symptr;		/* file pointer to symtab	*/  long f_nsyms;			/* number of symtab entries	*/  unsigned short f_opthdr;	/* sizeof(optional hdr)		*/  unsigned short f_flags;	/* flags			*/  unsigned short f_target_id;	/* (TI COFF specific)		*/};  /* Bits for f_flags:	F_RELFLG	relocation info stripped from file	F_EXEC		file is executable (no unresolved external references)	F_LNNO		line numbers stripped from file	F_LSYMS		local symbols stripped from file	F_AR16WR	file is 16-bit little-endian	F_AR32WR	file is 32-bit little-endian	F_AR32W		file is 32-bit big-endian	F_DYNLOAD	rs/6000 aix: dynamically loadable w/imports & exports	F_SHROBJ	rs/6000 aix: file is a shared object	F_DLL           PE format DLL  */ #define F_RELFLG	(0x0001)#define F_EXEC		(0x0002)#define F_LNNO		(0x0004)#define F_LSYMS		(0x0008)#define F_AR16WR	(0x0080)#define F_AR32WR	(0x0100)#define F_AR32W		(0x0200)#define F_DYNLOAD	(0x1000)#define F_SHROBJ	(0x2000)#define F_DLL		(0x2000) /* Extra structure which is used in the optional header.  */typedef struct _IMAGE_DATA_DIRECTORY{  bfd_vma VirtualAddress;  long    Size;}  IMAGE_DATA_DIRECTORY;#define PE_EXPORT_TABLE			0#define PE_IMPORT_TABLE			1#define PE_RESOURCE_TABLE		2#define PE_EXCEPTION_TABLE		3#define PE_CERTIFICATE_TABLE		4#define PE_BASE_RELOCATION_TABLE	5#define PE_DEBUG_DATA			6#define PE_ARCHITECTURE			7#define PE_GLOBAL_PTR			8#define PE_TLS_TABLE			9#define PE_LOAD_CONFIG_TABLE		10#define PE_BOUND_IMPORT_TABLE		11#define PE_IMPORT_ADDRESS_TABLE		12#define PE_DELAY_IMPORT_DESCRIPTOR	13#define PE_CLR_RUNTIME_HEADER		14/* DataDirectory[15] is currently reserved, so no define. */#define IMAGE_NUMBEROF_DIRECTORY_ENTRIES  16 /* Extra structure used in debug directory.  */struct internal_IMAGE_DEBUG_DIRECTORY{  unsigned long  Characteristics;  unsigned long  TimeDateStamp;  unsigned short MajorVersion;  unsigned short MinorVersion;  unsigned long  Type;  unsigned long  SizeOfData;  unsigned long  AddressOfRawData;  unsigned long  PointerToRawData;}; #define PE_IMAGE_DEBUG_TYPE_UNKNOWN          0#define PE_IMAGE_DEBUG_TYPE_COFF             1#define PE_IMAGE_DEBUG_TYPE_CODEVIEW         2#define PE_IMAGE_DEBUG_TYPE_FPO              3#define PE_IMAGE_DEBUG_TYPE_MISC             4#define PE_IMAGE_DEBUG_TYPE_EXCEPTION        5#define PE_IMAGE_DEBUG_TYPE_FIXUP            6#define PE_IMAGE_DEBUG_TYPE_OMAP_TO_SRC      7#define PE_IMAGE_DEBUG_TYPE_OMAP_FROM_SRC    8#define PE_IMAGE_DEBUG_TYPE_BORLAND          9#define PE_IMAGE_DEBUG_TYPE_RESERVED10       10#define PE_IMAGE_DEBUG_TYPE_CLSID            11#define PE_IMAGE_DEBUG_TYPE_VC_FEATURE       12#define PE_IMAGE_DEBUG_TYPE_POGO             13#define PE_IMAGE_DEBUG_TYPE_ILTCG            14#define PE_IMAGE_DEBUG_TYPE_MPX              15#define PE_IMAGE_DEBUG_TYPE_REPRO            16 /* Extra structure for a codeview debug record */#define CV_INFO_SIGNATURE_LENGTH 16 typedef struct _CODEVIEW_INFO{  unsigned long CVSignature;  char          Signature[CV_INFO_SIGNATURE_LENGTH];  unsigned int  SignatureLength;  unsigned long Age;  /* char PdbFileName[];  */} CODEVIEW_INFO; /* Default image base for NT.  */#define NT_EXE_IMAGE_BASE 0x400000#define NT_DLL_IMAGE_BASE 0x10000000 /* Default image base for BeOS. */#define BEOS_EXE_IMAGE_BASE 0x80000000#define BEOS_DLL_IMAGE_BASE 0x10000000 /* Extra stuff in a PE aouthdr */ #define PE_DEF_SECTION_ALIGNMENT 0x1000#ifndef PE_DEF_FILE_ALIGNMENT# define PE_DEF_FILE_ALIGNMENT 0x200#endif struct internal_extra_pe_aouthdr{  /* FIXME: The following entries are in AOUTHDR.  But they aren't     available internally in bfd.  We add them here so that objdump     can dump them.  */  /* The state of the image file.  */  short Magic;  /* Linker major version number.  */  char MajorLinkerVersion;  /* Linker minor version number.  */  char MinorLinkerVersion;  /* Total size of all code sections.  */  bfd_vma SizeOfCode;  /* Total size of all initialized data sections.  */  bfd_vma SizeOfInitializedData;  /* Total size of all uninitialized data sections.  */  bfd_vma SizeOfUninitializedData;  /* Address of entry point relative to image base.  */  bfd_vma AddressOfEntryPoint;  /* Address of the first code section relative to image base.  */  bfd_vma BaseOfCode;  /* Address of the first data section relative to image base.  */  bfd_vma BaseOfData;   /* PE stuff  */  bfd_vma ImageBase;		/* Address of specific location in memory that				   file is located, NT default 0x10000.  */   uint32_t SectionAlignment;	/* Section alignment default 0x1000.  */  uint32_t FileAlignment;	/* File alignment default 0x200.  */  short MajorOperatingSystemVersion; /* Minimum version of the operating.  */  short MinorOperatingSystemVersion; /* System req'd for exe, default 1.  */  short MajorImageVersion;	/* User defineable field to store version of */  short MinorImageVersion;	/*  exe or dll being created, default to 0.  */  short MajorSubsystemVersion;	/* Minimum subsystem version required to */  short MinorSubsystemVersion;	/*  run exe; default to 3.1.  */  uint32_t Win32Version;	/* Set to 0.  */  uint32_t SizeOfImage;		/* Size of memory to allocate for prog.  */  uint32_t SizeOfHeaders;	/* Size of PE header and section table.  */  uint32_t CheckSum;		/* Set to 0.  */  short Subsystem;   /* Type of subsystem exe uses for user interface,     possible values:     1 - NATIVE   Doesn't require a subsystem     2 - WINDOWS_GUI runs in Windows GUI subsystem     3 - WINDOWS_CUI runs in Windows char sub. (console app)     5 - OS2_CUI runs in OS/2 character subsystem     7 - POSIX_CUI runs in Posix character subsystem.  */  unsigned short DllCharacteristics; /* flags for DLL init.  */  bfd_vma SizeOfStackReserve;	/* Amount of memory to reserve.  */  bfd_vma SizeOfStackCommit;	/* Amount of memory initially committed for				   initial thread's stack, default 0x1000.  */  bfd_vma SizeOfHeapReserve;	/* Amount of virtual memory to reserve and */  bfd_vma SizeOfHeapCommit;	/*  commit, don't know what to defaut it to.  */  uint32_t LoaderFlags;		/* Can probably set to 0.  */  uint32_t NumberOfRvaAndSizes;	/* Number of entries in next entry, 16.  */  IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];}; struct internal_aouthdr{  short magic;			/* type of file				*/  short vstamp;			/* version stamp			*/  bfd_vma tsize;		/* text size in bytes, padded to FW bdry*/  bfd_vma dsize;		/* initialized data "  "		*/  bfd_vma bsize;		/* uninitialized data "   "		*/  bfd_vma entry;		/* entry pt.				*/  bfd_vma text_start;		/* base of text used for this file */  bfd_vma data_start;		/* base of data used for this file */   /* RS/6000 stuff */  bfd_vma o_toc;		/* address of TOC			*/  short o_snentry;		/* section number for entry point */  short o_sntext;		/* section number for text	*/  short o_sndata;		/* section number for data	*/  short o_sntoc;		/* section number for toc	*/  short o_snloader;		/* section number for loader section */  short o_snbss;		/* section number for bss	*/  short o_algntext;		/* max alignment for text	*/  short o_algndata;		/* max alignment for data	*/  short o_modtype;		/* Module type field, 1R,RE,RO	*/  short o_cputype;		/* Encoded CPU type		*/  bfd_vma o_maxstack;		/* max stack size allowed.	*/  bfd_vma o_maxdata;		/* max data size allowed.	*/  char o_flags;			/* Flags and TLS alignment	*/  short o_sntdata;		/* section number for tdata	*/  short o_sntbss;		/* section number for tbss	*/  short o_x64flags;		/* XCOFF64 flags		*/    /* ECOFF stuff */  bfd_vma bss_start;		/* Base of bss section.		*/  bfd_vma gp_value;		/* GP register value.		*/  unsigned long gprmask;	/* General registers used.	*/  unsigned long cprmask[4];	/* Coprocessor registers used.	*/  unsigned long fprmask;	/* Floating pointer registers used.  */   /* Apollo stuff */  long o_inlib;			/* inlib data */  long o_sri;			/* Static Resource Information */  long vid[2];			/* Version id */   struct internal_extra_pe_aouthdr pe;}; /* Storage classes.  */ /* This used to be defined as -1, but now n_sclass is unsigned.  */#define C_EFCN		0xff	/* physical end of function	*/#define C_NULL		0#define C_AUTO		1	/* automatic variable		*/#define C_EXT		2	/* external symbol		*/#define C_STAT		3	/* static			*/#define C_REG		4	/* register variable		*/#define C_EXTDEF	5	/* external definition		*/#define C_LABEL		6	/* label			*/#define C_ULABEL	7	/* undefined label		*/#define C_MOS		8	/* member of structure		*/#define C_ARG		9	/* function argument		*/#define C_STRTAG	10	/* structure tag		*/#define C_MOU		11	/* member of union		*/#define C_UNTAG		12	/* union tag			*/#define C_TPDEF		13	/* type definition		*/#define C_USTATIC	14	/* undefined static		*/#define C_ENTAG		15	/* enumeration tag		*/#define C_MOE		16	/* member of enumeration	*/#define C_REGPARM	17	/* register parameter		*/#define C_FIELD		18	/* bit field			*/#define C_AUTOARG	19	/* auto argument		*/#define C_LASTENT	20	/* dummy entry (end of block)	*/#define C_BLOCK		100	/* ".bb" or ".eb"		*/#define C_FCN		101	/* ".bf" or ".ef"		*/#define C_EOS		102	/* end of structure		*/#define C_FILE		103	/* file name			*/#define C_LINE		104	/* line # reformatted as symbol table entry */#define C_ALIAS		105	/* duplicate tag		*/#define C_HIDDEN	106	/* ext symbol in dmert public lib */#define C_WEAKEXT	127	/* weak symbol -- GNU extension.  */ /* New storage classes for TI COFF */#define C_UEXT		19	/* Tentative external definition */#define C_STATLAB	20	/* Static load time label */#define C_EXTLAB	21	/* External load time label */#define C_SYSTEM	23	/* System Wide variable */ /* New storage classes for WINDOWS_NT   */#define C_SECTION	104	/* section name */#define C_NT_WEAK	105	/* weak external */ /* New storage classes for 80960 */ /* C_LEAFPROC is obsolete.  Use C_LEAFEXT or C_LEAFSTAT */#define C_LEAFPROC	108	/* Leaf procedure, "call" via BAL */ #define C_SCALL		107	/* Procedure reachable via system call */#define C_LEAFEXT	108	/* External leaf */#define C_LEAFSTAT	113	/* Static leaf */#define C_OPTVAR	109	/* Optimized variable		*/#define C_DEFINE	110	/* Preprocessor #define		*/#define C_PRAGMA	111	/* Advice to compiler or linker	*/#define C_SEGMENT	112	/* 80960 segment name		*/ /* New storage classes for RS/6000 */#define C_HIDEXT	107	/* Un-named external symbol */#define C_BINCL		108	/* Marks beginning of include file */#define C_EINCL		109	/* Marks ending of include file */#define C_AIX_WEAKEXT	111	/* AIX definition of C_WEAKEXT.  */#define C_DWARF		112	/* DWARF symbol  */ #define C_NULL_VALUE	0x00de1e00    /* Value for a C_NULL deleted entry.  */ #ifdef AIX_WEAK_SUPPORT#undef C_WEAKEXT#define C_WEAKEXT	C_AIX_WEAKEXT#endif /* storage classes for stab symbols for RS/6000 */#define C_GSYM		(0x80)#define C_LSYM		(0x81)#define C_PSYM		(0x82)#define C_RSYM		(0x83)#define C_RPSYM		(0x84)#define C_STSYM		(0x85)#define C_TCSYM		(0x86)#define C_BCOMM		(0x87)#define C_ECOML		(0x88)#define C_ECOMM		(0x89)#define C_DECL		(0x8c)#define C_ENTRY		(0x8d)#define C_FUN		(0x8e)#define C_BSTAT		(0x8f)#define C_ESTAT		(0x90)#define C_GTLS		(0x97)#define C_STTLS		(0x98) /* Storage classes for Thumb symbols */#define C_THUMBEXT	(128 + C_EXT)		/* 130 */#define C_THUMBSTAT	(128 + C_STAT)		/* 131 */#define C_THUMBLABEL	(128 + C_LABEL)		/* 134 */#define C_THUMBEXTFUNC	(C_THUMBEXT  + 20)	/* 150 */#define C_THUMBSTATFUNC (C_THUMBSTAT + 20)	/* 151 */ /* True if XCOFF symbols of class CLASS have auxiliary csect information.  */#define CSECT_SYM_P(CLASS) \  ((CLASS) == C_EXT || (CLASS) == C_AIX_WEAKEXT || (CLASS) == C_HIDEXT) #define SCNNMLEN (8) struct internal_scnhdr{  char s_name[SCNNMLEN] ATTRIBUTE_NONSTRING;	/* section name	*/   /* Physical address, aliased s_nlib.     In the pei format, this field is the virtual section size     (the size of the section after being loaded int memory),     NOT the physical address.  */  bfd_vma s_paddr;   bfd_vma s_vaddr;		/* virtual address		*/  bfd_vma s_size;		/* section size			*/  bfd_vma s_scnptr;		/* file ptr to raw data for section */  bfd_vma s_relptr;		/* file ptr to relocation	*/  bfd_vma s_lnnoptr;		/* file ptr to line numbers	*/  unsigned long s_nreloc;	/* number of relocation entries	*/  unsigned long s_nlnno;	/* number of line number entries*/  unsigned long s_flags;	/* flags			*/  unsigned char s_page;         /* TI COFF load page            */}; /* s_flags "type".  */#define STYP_REG	 (0x0000) /* "regular": allocated, relocated, loaded */#define STYP_DSECT	 (0x0001) /* "dummy":  relocated only*/#define STYP_NOLOAD	 (0x0002) /* "noload": allocated, relocated,				     not loaded */#define STYP_GROUP	 (0x0004) /* "grouped": formed of input sections */#define STYP_PAD	 (0x0008) /* "padding": not allocated, not relocated,				     loaded */#define STYP_COPY	 (0x0010) /* "copy": for decision function used by field				     update; not allocated, not relocated,				     loaded;				     reloc & lineno entries processed normally */#define STYP_TEXT	 (0x0020) /* section contains text only */#define S_SHRSEG	 (0x0020) /* In 3b Update files (output of ogen),				     sections which appear in SHARED segments				     of the Pfile will have the S_SHRSEG flag				     set by ogen, to inform dufr that updating				     1 copy of the proc. will update all				     process invocations. */#define STYP_DATA	 (0x0040) /* section contains data only */#define STYP_BSS	 (0x0080) /* section contains bss only */#define S_NEWFCN	 (0x0100) /* In a minimal file or an update file,				     a new function (as compared with a				     replaced function) */#define STYP_INFO	 (0x0200) /* comment: not allocated not relocated,				     not loaded */#define STYP_OVER	 (0x0400) /* overlay: relocated not allocated or				     loaded */#define STYP_LIB	 (0x0800) /* for .lib: same as INFO */#define STYP_MERGE	 (0x2000) /* merge section -- combines with text,				     data or bss sections only */#define STYP_REVERSE_PAD (0x4000) /* section will be padded with no-op				     instructions wherever padding is necessary				     and there is a word of contiguous bytes				     beginning on a word boundary. */ #define STYP_LIT	 (0x8020) /* Literal data (like STYP_TEXT) */  /* 1 line number entry for every "breakpointable" source line in a section.   Line numbers are grouped on a per function basis; first entry in a function   grouping will have l_lnno = 0 and in place of physical address will be the   symbol table index of the function name.  */ struct internal_lineno{  union  {    bfd_signed_vma l_symndx;	/* function name symbol index, iff l_lnno == 0 */    bfd_signed_vma l_paddr;	/* (physical) address of line number	*/  }     l_addr;  unsigned long l_lnno;		/* line number		*/}; #define SYMNMLEN	8	/* # characters in a symbol name	*/ struct internal_syment{  union  {    char _n_name[SYMNMLEN] ATTRIBUTE_NONSTRING;	/* old COFF version	*/    struct    {      uintptr_t _n_zeroes;	/* new == 0			*/      uintptr_t _n_offset;	/* offset into string table	*/    }      _n_n;    char *_n_nptr[2];		/* allows for overlaying	*/  }     _n;  bfd_vma n_value;		/* value of symbol		*/  int n_scnum;			/* section number		*/  unsigned short n_flags;	/* copy of flags from filhdr	*/  unsigned short n_type;	/* type and derived type	*/  unsigned char n_sclass;	/* storage class		*/  unsigned char n_numaux;	/* number of aux. entries	*/}; #define n_name		_n._n_name#define n_zeroes	_n._n_n._n_zeroes#define n_offset	_n._n_n._n_offset /* Relocatable symbols have number of the section in which they are defined,   or one of the following:  */ #define N_UNDEF	((int)0)	/* undefined symbol */#define N_ABS	((int)-1)	/* value of symbol is absolute */#define N_DEBUG	((int)-2)	/* debugging symbol -- value is meaningless */#define N_TV	((int)-3)	/* indicates symbol needs preload transfer				   vector */#define P_TV	((int)-4)	/* indicates symbol needs postload transfer				   vector */ /* Type of a symbol, in low N bits of the word.  */ #define T_NULL		0#define T_VOID		1	/* function argument (only used by compiler) */#define T_CHAR		2	/* character		*/#define T_SHORT		3	/* short integer	*/#define T_INT		4	/* integer		*/

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