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      1 /* Internal format of COFF object file data structures, for GNU BFD.
      2    This file is part of BFD, the Binary File Descriptor library.
      3 
      4    Copyright (C) 1999-2014 Free Software Foundation, Inc.
      5 
      6    This program is free software; you can redistribute it and/or modify
      7    it under the terms of the GNU General Public License as published by
      8    the Free Software Foundation; either version 3 of the License, or
      9    (at your option) any later version.
     10 
     11    This program is distributed in the hope that it will be useful,
     12    but WITHOUT ANY WARRANTY; without even the implied warranty of
     13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     14    GNU General Public License for more details.
     15 
     16    You should have received a copy of the GNU General Public License
     17    along with this program; if not, write to the Free Software
     18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
     19    MA 02110-1301, USA.  */
     20 
     21 #ifndef GNU_COFF_INTERNAL_H
     22 #define GNU_COFF_INTERNAL_H 1
     23 
     24 /* First, make "signed char" work, even on old compilers. */
     25 #ifndef signed
     26 #ifndef __STDC__
     27 #define	signed			/**/
     28 #endif
     29 #endif
     30 
     31 /********************** FILE HEADER **********************/
     32 
     33 /* extra stuff in a PE header. */
     34 
     35 struct internal_extra_pe_filehdr
     36 {
     37   /* DOS header data follows for PE stuff */
     38   unsigned short e_magic;	/* Magic number, 0x5a4d */
     39   unsigned short e_cblp;	/* Bytes on last page of file, 0x90 */
     40   unsigned short e_cp;		/* Pages in file, 0x3 */
     41   unsigned short e_crlc;	/* Relocations, 0x0 */
     42   unsigned short e_cparhdr;	/* Size of header in paragraphs, 0x4 */
     43   unsigned short e_minalloc;	/* Minimum extra paragraphs needed, 0x0 */
     44   unsigned short e_maxalloc;	/* Maximum extra paragraphs needed, 0xFFFF */
     45   unsigned short e_ss;		/* Initial (relative) SS value, 0x0 */
     46   unsigned short e_sp;		/* Initial SP value, 0xb8 */
     47   unsigned short e_csum;	/* Checksum, 0x0 */
     48   unsigned short e_ip;		/* Initial IP value, 0x0 */
     49   unsigned short e_cs;		/* Initial (relative) CS value, 0x0 */
     50   unsigned short e_lfarlc;	/* File address of relocation table, 0x40 */
     51   unsigned short e_ovno;	/* Overlay number, 0x0 */
     52   unsigned short e_res[4];	/* Reserved words, all 0x0 */
     53   unsigned short e_oemid;	/* OEM identifier (for e_oeminfo), 0x0 */
     54   unsigned short e_oeminfo;	/* OEM information; e_oemid specific, 0x0 */
     55   unsigned short e_res2[10];	/* Reserved words, all 0x0 */
     56   bfd_vma  e_lfanew;		/* File address of new exe header, 0x80 */
     57   unsigned long dos_message[16]; /* text which always follows dos header */
     58   bfd_vma  nt_signature;   	/* required NT signature, 0x4550 */
     59 };
     60 
     61 #define GO32_STUBSIZE 2048
     62 
     63 struct internal_filehdr
     64 {
     65   struct internal_extra_pe_filehdr pe;
     66 
     67   /* coff-stgo32 EXE stub header before BFD tdata has been allocated.
     68      Its data is kept in INTERNAL_FILEHDR.GO32STUB afterwards.
     69 
     70      F_GO32STUB is set iff go32stub contains a valid data.  Artifical headers
     71      created in BFD have no pre-set go32stub.  */
     72   char go32stub[GO32_STUBSIZE];
     73 
     74   /* Standard coff internal info.  */
     75   unsigned short f_magic;	/* magic number			*/
     76   unsigned int   f_nscns;	/* number of sections		*/
     77   long f_timdat;		/* time & date stamp		*/
     78   bfd_vma f_symptr;		/* file pointer to symtab	*/
     79   long f_nsyms;			/* number of symtab entries	*/
     80   unsigned short f_opthdr;	/* sizeof(optional hdr)		*/
     81   unsigned short f_flags;	/* flags			*/
     82   unsigned short f_target_id;	/* (TI COFF specific)		*/
     83 };
     84 
     85 
     86 /* Bits for f_flags:
     87  	F_RELFLG	relocation info stripped from file
     88  	F_EXEC		file is executable (no unresolved external references)
     89  	F_LNNO		line numbers stripped from file
     90  	F_LSYMS		local symbols stripped from file
     91  	F_AR16WR	file is 16-bit little-endian
     92  	F_AR32WR	file is 32-bit little-endian
     93  	F_AR32W		file is 32-bit big-endian
     94  	F_DYNLOAD	rs/6000 aix: dynamically loadable w/imports & exports
     95  	F_SHROBJ	rs/6000 aix: file is a shared object
     96 	F_DLL           PE format DLL
     97 	F_GO32STUB      Field go32stub contains valid data.  */
     98 
     99 #define	F_RELFLG	(0x0001)
    100 #define	F_EXEC		(0x0002)
    101 #define	F_LNNO		(0x0004)
    102 #define	F_LSYMS		(0x0008)
    103 #define	F_AR16WR	(0x0080)
    104 #define	F_AR32WR	(0x0100)
    105 #define	F_AR32W     	(0x0200)
    106 #define	F_DYNLOAD	(0x1000)
    107 #define	F_SHROBJ	(0x2000)
    108 #define F_DLL           (0x2000)
    109 #define F_GO32STUB      (0x4000)
    110 
    111 /* Extra structure which is used in the optional header.  */
    112 typedef struct _IMAGE_DATA_DIRECTORY
    113 {
    114   bfd_vma VirtualAddress;
    115   long    Size;
    116 }  IMAGE_DATA_DIRECTORY;
    117 #define PE_EXPORT_TABLE			0
    118 #define PE_IMPORT_TABLE			1
    119 #define PE_RESOURCE_TABLE		2
    120 #define PE_EXCEPTION_TABLE		3
    121 #define PE_CERTIFICATE_TABLE		4
    122 #define PE_BASE_RELOCATION_TABLE	5
    123 #define PE_DEBUG_DATA			6
    124 #define PE_ARCHITECTURE			7
    125 #define PE_GLOBAL_PTR			8
    126 #define PE_TLS_TABLE			9
    127 #define PE_LOAD_CONFIG_TABLE		10
    128 #define PE_BOUND_IMPORT_TABLE		11
    129 #define PE_IMPORT_ADDRESS_TABLE		12
    130 #define PE_DELAY_IMPORT_DESCRIPTOR	13
    131 #define PE_CLR_RUNTIME_HEADER		14
    132 /* DataDirectory[15] is currently reserved, so no define. */
    133 #define IMAGE_NUMBEROF_DIRECTORY_ENTRIES  16
    134 
    135 /* Extra structure used in debug directory.  */
    136 struct internal_IMAGE_DEBUG_DIRECTORY
    137 {
    138   unsigned long  Characteristics;
    139   unsigned long  TimeDateStamp;
    140   unsigned short MajorVersion;
    141   unsigned short MinorVersion;
    142   unsigned long  Type;
    143   unsigned long  SizeOfData;
    144   unsigned long  AddressOfRawData;
    145   unsigned long  PointerToRawData;
    146 };
    147 
    148 #define PE_IMAGE_DEBUG_TYPE_UNKNOWN          0
    149 #define PE_IMAGE_DEBUG_TYPE_COFF             1
    150 #define PE_IMAGE_DEBUG_TYPE_CODEVIEW         2
    151 #define PE_IMAGE_DEBUG_TYPE_FPO              3
    152 #define PE_IMAGE_DEBUG_TYPE_MISC             4
    153 #define PE_IMAGE_DEBUG_TYPE_EXCEPTION        5
    154 #define PE_IMAGE_DEBUG_TYPE_FIXUP            6
    155 #define PE_IMAGE_DEBUG_TYPE_OMAP_TO_SRC      7
    156 #define PE_IMAGE_DEBUG_TYPE_OMAP_FROM_SRC    8
    157 #define PE_IMAGE_DEBUG_TYPE_BORLAND          9
    158 #define PE_IMAGE_DEBUG_TYPE_RESERVED10       10
    159 #define PE_IMAGE_DEBUG_TYPE_CLSID            11
    160 
    161 /* Extra structure for a codeview debug record */
    162 #define CV_INFO_SIGNATURE_LENGTH 16
    163 
    164 typedef struct _CODEVIEW_INFO
    165 {
    166   unsigned long CVSignature;
    167   char          Signature[CV_INFO_SIGNATURE_LENGTH];
    168   unsigned int  SignatureLength;
    169   unsigned long Age;
    170   char PdbFileName[];
    171 } CODEVIEW_INFO;
    172 
    173 /* Default image base for NT.  */
    174 #define NT_EXE_IMAGE_BASE 0x400000
    175 #define NT_DLL_IMAGE_BASE 0x10000000
    176 
    177 /* Default image base for BeOS. */
    178 #define BEOS_EXE_IMAGE_BASE 0x80000000
    179 #define BEOS_DLL_IMAGE_BASE 0x10000000
    180 
    181 /* Extra stuff in a PE aouthdr */
    182 
    183 #define PE_DEF_SECTION_ALIGNMENT 0x1000
    184 #ifndef PE_DEF_FILE_ALIGNMENT
    185 # define PE_DEF_FILE_ALIGNMENT 0x200
    186 #endif
    187 
    188 struct internal_extra_pe_aouthdr
    189 {
    190   /* FIXME: The following entries are in AOUTHDR.  But they aren't
    191      available internally in bfd.  We add them here so that objdump
    192      can dump them.  */
    193   /* The state of the image file.  */
    194   short Magic;
    195   /* Linker major version number.  */
    196   char MajorLinkerVersion;
    197   /* Linker minor version number.  */
    198   char MinorLinkerVersion;
    199   /* Total size of all code sections.  */
    200   long SizeOfCode;
    201   /* Total size of all initialized data sections.  */
    202   long SizeOfInitializedData;
    203   /* Total size of all uninitialized data sections.  */
    204   long SizeOfUninitializedData;
    205   /* Address of entry point relative to image base.  */
    206   bfd_vma AddressOfEntryPoint;
    207   /* Address of the first code section relative to image base.  */
    208   bfd_vma BaseOfCode;
    209   /* Address of the first data section relative to image base.  */
    210   bfd_vma BaseOfData;
    211 
    212   /* PE stuff  */
    213   bfd_vma ImageBase;		/* Address of specific location in memory that
    214 				    file is located, NT default 0x10000.  */
    215 
    216   bfd_vma SectionAlignment;	/* Section alignment default 0x1000.  */
    217   bfd_vma FileAlignment;	/* File alignment default 0x200.  */
    218   short   MajorOperatingSystemVersion; /* Minimum version of the operating.  */
    219   short   MinorOperatingSystemVersion; /* System req'd for exe, default to 1.  */
    220   short   MajorImageVersion;	/* User defineable field to store version of */
    221   short   MinorImageVersion;	/*  exe or dll being created, default to 0.  */
    222   short   MajorSubsystemVersion; /* Minimum subsystem version required to */
    223   short   MinorSubsystemVersion; /*  run exe; default to 3.1.  */
    224   long    Reserved1;		/* Seems to be 0.  */
    225   long    SizeOfImage;		/* Size of memory to allocate for prog.  */
    226   long    SizeOfHeaders;	/* Size of PE header and section table.  */
    227   long    CheckSum;		/* Set to 0.  */
    228   short   Subsystem;
    229 
    230   /* Type of subsystem exe uses for user interface,
    231      possible values:
    232      1 - NATIVE   Doesn't require a subsystem
    233      2 - WINDOWS_GUI runs in Windows GUI subsystem
    234      3 - WINDOWS_CUI runs in Windows char sub. (console app)
    235      5 - OS2_CUI runs in OS/2 character subsystem
    236      7 - POSIX_CUI runs in Posix character subsystem.  */
    237   unsigned short DllCharacteristics; /* flags for DLL init.  */
    238   bfd_vma SizeOfStackReserve;	/* Amount of memory to reserve.  */
    239   bfd_vma SizeOfStackCommit;	/* Amount of memory initially committed for
    240 				    initial thread's stack, default is 0x1000.  */
    241   bfd_vma SizeOfHeapReserve;	/* Amount of virtual memory to reserve and */
    242   bfd_vma SizeOfHeapCommit;	/*  commit, don't know what to defaut it to.  */
    243   long    LoaderFlags;		/* Can probably set to 0.  */
    244   long    NumberOfRvaAndSizes;	/* Number of entries in next entry, 16.  */
    245   IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
    246 };
    247 
    248 /********************** AOUT "OPTIONAL HEADER" **********************/
    249 struct internal_aouthdr
    250 {
    251   short magic;			/* type of file				*/
    252   short vstamp;			/* version stamp			*/
    253   bfd_vma tsize;		/* text size in bytes, padded to FW bdry*/
    254   bfd_vma dsize;		/* initialized data "  "		*/
    255   bfd_vma bsize;		/* uninitialized data "   "		*/
    256   bfd_vma entry;		/* entry pt.				*/
    257   bfd_vma text_start;		/* base of text used for this file */
    258   bfd_vma data_start;		/* base of data used for this file */
    259 
    260   /* i960 stuff */
    261   unsigned long tagentries;	/* number of tag entries to follow */
    262 
    263   /* RS/6000 stuff */
    264   bfd_vma o_toc;		/* address of TOC			*/
    265   short o_snentry;		/* section number for entry point */
    266   short o_sntext;		/* section number for text	*/
    267   short o_sndata;		/* section number for data	*/
    268   short o_sntoc;		/* section number for toc	*/
    269   short o_snloader;		/* section number for loader section */
    270   short o_snbss;		/* section number for bss	*/
    271   short o_algntext;		/* max alignment for text	*/
    272   short o_algndata;		/* max alignment for data	*/
    273   short o_modtype;		/* Module type field, 1R,RE,RO	*/
    274   short o_cputype;		/* Encoded CPU type		*/
    275   bfd_vma o_maxstack;	/* max stack size allowed.	*/
    276   bfd_vma o_maxdata;	/* max data size allowed.	*/
    277 
    278   /* ECOFF stuff */
    279   bfd_vma bss_start;		/* Base of bss section.		*/
    280   bfd_vma gp_value;		/* GP register value.		*/
    281   unsigned long gprmask;	/* General registers used.	*/
    282   unsigned long cprmask[4];	/* Coprocessor registers used.	*/
    283   unsigned long fprmask;	/* Floating pointer registers used.  */
    284 
    285   /* Apollo stuff */
    286   long o_inlib;			/* inlib data */
    287   long o_sri;			/* Static Resource Information */
    288   long vid[2];			/* Version id */
    289 
    290   struct internal_extra_pe_aouthdr pe;
    291 };
    292 
    293 /********************** STORAGE CLASSES **********************/
    294 
    295 /* This used to be defined as -1, but now n_sclass is unsigned.  */
    296 #define C_EFCN		0xff	/* physical end of function	*/
    297 #define C_NULL		0
    298 #define C_AUTO		1	/* automatic variable		*/
    299 #define C_EXT		2	/* external symbol		*/
    300 #define C_STAT		3	/* static			*/
    301 #define C_REG		4	/* register variable		*/
    302 #define C_EXTDEF	5	/* external definition		*/
    303 #define C_LABEL		6	/* label			*/
    304 #define C_ULABEL	7	/* undefined label		*/
    305 #define C_MOS		8	/* member of structure		*/
    306 #define C_ARG		9	/* function argument		*/
    307 #define C_STRTAG	10	/* structure tag		*/
    308 #define C_MOU		11	/* member of union		*/
    309 #define C_UNTAG		12	/* union tag			*/
    310 #define C_TPDEF		13	/* type definition		*/
    311 #define C_USTATIC	14	/* undefined static		*/
    312 #define C_ENTAG		15	/* enumeration tag		*/
    313 #define C_MOE		16	/* member of enumeration	*/
    314 #define C_REGPARM	17	/* register parameter		*/
    315 #define C_FIELD		18	/* bit field			*/
    316 #define C_AUTOARG	19	/* auto argument		*/
    317 #define C_LASTENT	20	/* dummy entry (end of block)	*/
    318 #define C_BLOCK		100	/* ".bb" or ".eb"		*/
    319 #define C_FCN		101	/* ".bf" or ".ef"		*/
    320 #define C_EOS		102	/* end of structure		*/
    321 #define C_FILE		103	/* file name			*/
    322 #define C_LINE		104	/* line # reformatted as symbol table entry */
    323 #define C_ALIAS	 	105	/* duplicate tag		*/
    324 #define C_HIDDEN	106	/* ext symbol in dmert public lib */
    325 #define C_WEAKEXT	127	/* weak symbol -- GNU extension.  */
    326 
    327 /* New storage classes for TI COFF */
    328 #define C_UEXT		19	/* Tentative external definition */
    329 #define C_STATLAB	20	/* Static load time label */
    330 #define C_EXTLAB	21	/* External load time label */
    331 #define C_SYSTEM	23	/* System Wide variable */
    332 
    333 /* New storage classes for WINDOWS_NT   */
    334 #define C_SECTION       104     /* section name */
    335 #define C_NT_WEAK	105	/* weak external */
    336 
    337  /* New storage classes for 80960 */
    338 
    339 /* C_LEAFPROC is obsolete.  Use C_LEAFEXT or C_LEAFSTAT */
    340 #define C_LEAFPROC	108	/* Leaf procedure, "call" via BAL */
    341 
    342 #define C_SCALL		107	/* Procedure reachable via system call */
    343 #define C_LEAFEXT       108	/* External leaf */
    344 #define C_LEAFSTAT      113	/* Static leaf */
    345 #define C_OPTVAR	109	/* Optimized variable		*/
    346 #define C_DEFINE	110	/* Preprocessor #define		*/
    347 #define C_PRAGMA	111	/* Advice to compiler or linker	*/
    348 #define C_SEGMENT	112	/* 80960 segment name		*/
    349 
    350   /* Storage classes for m88k */
    351 #define C_SHADOW        107     /* shadow symbol                */
    352 #define C_VERSION       108     /* coff version symbol          */
    353 
    354  /* New storage classes for RS/6000 */
    355 #define C_HIDEXT        107	/* Un-named external symbol */
    356 #define C_BINCL         108	/* Marks beginning of include file */
    357 #define C_EINCL         109	/* Marks ending of include file */
    358 #define C_AIX_WEAKEXT   111	/* AIX definition of C_WEAKEXT.  */
    359 
    360 #define C_NULL_VALUE	0x00de1e00    /* Value for a C_NULL deleted entry.  */
    361 
    362 #if defined _AIX52 || defined AIX_WEAK_SUPPORT
    363 #undef C_WEAKEXT
    364 #define C_WEAKEXT       C_AIX_WEAKEXT
    365 #endif
    366 
    367  /* storage classes for stab symbols for RS/6000 */
    368 #define C_GSYM          (0x80)
    369 #define C_LSYM          (0x81)
    370 #define C_PSYM          (0x82)
    371 #define C_RSYM          (0x83)
    372 #define C_RPSYM         (0x84)
    373 #define C_STSYM         (0x85)
    374 #define C_TCSYM         (0x86)
    375 #define C_BCOMM         (0x87)
    376 #define C_ECOML         (0x88)
    377 #define C_ECOMM         (0x89)
    378 #define C_DECL          (0x8c)
    379 #define C_ENTRY         (0x8d)
    380 #define C_FUN           (0x8e)
    381 #define C_BSTAT         (0x8f)
    382 #define C_ESTAT         (0x90)
    383 #define C_GTLS          (0x97)
    384 #define C_STTLS         (0x98)
    385 
    386 /* Storage classes for Thumb symbols */
    387 #define C_THUMBEXT      (128 + C_EXT)		/* 130 */
    388 #define C_THUMBSTAT     (128 + C_STAT)		/* 131 */
    389 #define C_THUMBLABEL    (128 + C_LABEL)		/* 134 */
    390 #define C_THUMBEXTFUNC  (C_THUMBEXT  + 20)	/* 150 */
    391 #define C_THUMBSTATFUNC (C_THUMBSTAT + 20)	/* 151 */
    392 
    393 /* True if XCOFF symbols of class CLASS have auxillary csect information.  */
    394 #define CSECT_SYM_P(CLASS) \
    395   ((CLASS) == C_EXT || (CLASS) == C_AIX_WEAKEXT || (CLASS) == C_HIDEXT)
    396 
    397 /********************** SECTION HEADER **********************/
    398 
    399 #define SCNNMLEN (8)
    400 
    401 struct internal_scnhdr
    402 {
    403   char s_name[SCNNMLEN];	/* section name			*/
    404 
    405   /* Physical address, aliased s_nlib.
    406      In the pei format, this field is the virtual section size
    407      (the size of the section after being loaded int memory),
    408      NOT the physical address.  */
    409   bfd_vma s_paddr;
    410 
    411   bfd_vma s_vaddr;		/* virtual address		*/
    412   bfd_vma s_size;		/* section size			*/
    413   bfd_vma s_scnptr;		/* file ptr to raw data for section */
    414   bfd_vma s_relptr;		/* file ptr to relocation	*/
    415   bfd_vma s_lnnoptr;		/* file ptr to line numbers	*/
    416   unsigned long s_nreloc;	/* number of relocation entries	*/
    417   unsigned long s_nlnno;	/* number of line number entries*/
    418   long s_flags;			/* flags			*/
    419   long s_align;			/* used on I960			*/
    420   unsigned char s_page;         /* TI COFF load page            */
    421 };
    422 
    423 /* s_flags "type".  */
    424 #define STYP_REG	 (0x0000)	/* "regular": allocated, relocated, loaded */
    425 #define STYP_DSECT	 (0x0001)	/* "dummy":  relocated only*/
    426 #define STYP_NOLOAD	 (0x0002)	/* "noload": allocated, relocated, not loaded */
    427 #define STYP_GROUP	 (0x0004)	/* "grouped": formed of input sections */
    428 #define STYP_PAD	 (0x0008)	/* "padding": not allocated, not relocated, loaded */
    429 #define STYP_COPY	 (0x0010)	/* "copy": for decision function used by field update;  not allocated, not relocated,
    430 									     loaded; reloc & lineno entries processed normally */
    431 #define STYP_TEXT	 (0x0020)	/* section contains text only */
    432 #define S_SHRSEG	 (0x0020)	/* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile
    433 									     will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will
    434 									     update all process invocations. */
    435 #define STYP_DATA	 (0x0040)	/* section contains data only */
    436 #define STYP_BSS	 (0x0080)	/* section contains bss only */
    437 #define S_NEWFCN	 (0x0100)	/* In a minimal file or an update file, a new function (as compared with a replaced function) */
    438 #define STYP_INFO	 (0x0200)	/* comment: not allocated not relocated, not loaded */
    439 #define STYP_OVER	 (0x0400)	/* overlay: relocated not allocated or loaded */
    440 #define STYP_LIB	 (0x0800)	/* for .lib: same as INFO */
    441 #define STYP_MERGE	 (0x2000)	/* merge section -- combines with text, data or bss sections only */
    442 #define STYP_REVERSE_PAD (0x4000)	/* section will be padded with no-op instructions
    443 					   wherever padding is necessary and there is a
    444 					   word of contiguous bytes beginning on a word
    445 					   boundary. */
    446 
    447 #define STYP_LIT	0x8020	/* Literal data (like STYP_TEXT) */
    448 
    449 
    450 /********************** LINE NUMBERS **********************/
    451 
    452 /* 1 line number entry for every "breakpointable" source line in a section.
    453    Line numbers are grouped on a per function basis; first entry in a function
    454    grouping will have l_lnno = 0 and in place of physical address will be the
    455    symbol table index of the function name.  */
    456 
    457 struct internal_lineno
    458 {
    459   union
    460   {
    461     bfd_signed_vma l_symndx;		/* function name symbol index, iff l_lnno == 0*/
    462     bfd_signed_vma l_paddr;		/* (physical) address of line number	*/
    463   }     l_addr;
    464   unsigned long l_lnno;		/* line number		*/
    465 };
    466 
    467 /********************** SYMBOLS **********************/
    468 
    469 #define SYMNMLEN	8	/* # characters in a symbol name	*/
    470 #define FILNMLEN	14	/* # characters in a file name		*/
    471 #define DIMNUM		4	/* # array dimensions in auxiliary entry */
    472 
    473 struct internal_syment
    474 {
    475   union
    476   {
    477     char _n_name[SYMNMLEN];	/* old COFF version		*/
    478     struct
    479     {
    480       bfd_hostptr_t _n_zeroes;	/* new == 0			*/
    481       bfd_hostptr_t _n_offset;	/* offset into string table	*/
    482     }      _n_n;
    483     char *_n_nptr[2];		/* allows for overlaying	*/
    484   }     _n;
    485   bfd_vma n_value;		/* value of symbol		*/
    486   short n_scnum;		/* section number		*/
    487   unsigned short n_flags;	/* copy of flags from filhdr	*/
    488   unsigned short n_type;	/* type and derived type	*/
    489   unsigned char n_sclass;	/* storage class		*/
    490   unsigned char n_numaux;	/* number of aux. entries	*/
    491 };
    492 
    493 #define n_name		_n._n_name
    494 #define n_zeroes	_n._n_n._n_zeroes
    495 #define n_offset	_n._n_n._n_offset
    496 
    497 /* Relocatable symbols have number of the section in which they are defined,
    498    or one of the following:  */
    499 
    500 #define N_UNDEF	((short)0)	/* undefined symbol */
    501 #define N_ABS	((short)-1)	/* value of symbol is absolute */
    502 #define N_DEBUG	((short)-2)	/* debugging symbol -- value is meaningless */
    503 #define N_TV	((short)-3)	/* indicates symbol needs preload transfer vector */
    504 #define P_TV	((short)-4)	/* indicates symbol needs postload transfer vector*/
    505 
    506 /* Type of a symbol, in low N bits of the word.  */
    507 
    508 #define T_NULL		0
    509 #define T_VOID		1	/* function argument (only used by compiler) */
    510 #define T_CHAR		2	/* character		*/
    511 #define T_SHORT		3	/* short integer	*/
    512 #define T_INT		4	/* integer		*/
    513 #define T_LONG		5	/* long integer		*/
    514 #define T_FLOAT		6	/* floating point	*/
    515 #define T_DOUBLE	7	/* double word		*/
    516 #define T_STRUCT	8	/* structure 		*/
    517 #define T_UNION		9	/* union 		*/
    518 #define T_ENUM		10	/* enumeration 		*/
    519 #define T_MOE		11	/* member of enumeration*/
    520 #define T_UCHAR		12	/* unsigned character	*/
    521 #define T_USHORT	13	/* unsigned short	*/
    522 #define T_UINT		14	/* unsigned integer	*/
    523 #define T_ULONG		15	/* unsigned long	*/
    524 #define T_LNGDBL	16	/* long double		*/
    525 
    526 /* Derived types, in n_type.  */
    527 
    528 #define DT_NON		(0)	/* no derived type */
    529 #define DT_PTR		(1)	/* pointer */
    530 #define DT_FCN		(2)	/* function */
    531 #define DT_ARY		(3)	/* array */
    532 
    533 #define BTYPE(x)	((x) & N_BTMASK)
    534 #define DTYPE(x)	(((x) & N_TMASK) >> N_BTSHFT)
    535 
    536 #define ISPTR(x) \
    537   (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_PTR << N_BTSHFT))
    538 #define ISFCN(x) \
    539   (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_FCN << N_BTSHFT))
    540 #define ISARY(x) \
    541   (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_ARY << N_BTSHFT))
    542 #define ISTAG(x) \
    543   ((x) == C_STRTAG || (x) == C_UNTAG || (x) == C_ENTAG)
    544 #define DECREF(x) \
    545   ((((x) >> N_TSHIFT) & ~ N_BTMASK) | ((x) & N_BTMASK))
    546 
    547 union internal_auxent
    548 {
    549   struct
    550   {
    551 
    552     union
    553     {
    554       long l;			/* str, un, or enum tag indx */
    555       struct coff_ptr_struct *p;
    556     }     x_tagndx;
    557 
    558     union
    559     {
    560       struct
    561       {
    562 	unsigned short x_lnno;	/* declaration line number */
    563 	unsigned short x_size;	/* str/union/array size */
    564       }      x_lnsz;
    565       long x_fsize;		/* size of function */
    566     }     x_misc;
    567 
    568     union
    569     {
    570       struct
    571       {				/* if ISFCN, tag, or .bb */
    572 	bfd_signed_vma x_lnnoptr;		/* ptr to fcn line # */
    573 	union
    574 	{			/* entry ndx past block end */
    575 	  long l;
    576 	  struct coff_ptr_struct *p;
    577 	}     x_endndx;
    578       }      x_fcn;
    579 
    580       struct
    581       {				/* if ISARY, up to 4 dimen. */
    582 	unsigned short x_dimen[DIMNUM];
    583       }      x_ary;
    584     }     x_fcnary;
    585 
    586     unsigned short x_tvndx;	/* tv index */
    587   }      x_sym;
    588 
    589   union
    590   {
    591     char x_fname[FILNMLEN];
    592     struct
    593     {
    594       long x_zeroes;
    595       long x_offset;
    596     }      x_n;
    597   }     x_file;
    598 
    599   struct
    600   {
    601     long x_scnlen;		/* section length */
    602     unsigned short x_nreloc;	/* # relocation entries */
    603     unsigned short x_nlinno;	/* # line numbers */
    604     unsigned long x_checksum;	/* section COMDAT checksum for PE */
    605     unsigned short x_associated; /* COMDAT associated section index for PE */
    606     unsigned char x_comdat;	/* COMDAT selection number for PE */
    607   }      x_scn;
    608 
    609   struct
    610   {
    611     long x_tvfill;		/* tv fill value */
    612     unsigned short x_tvlen;	/* length of .tv */
    613     unsigned short x_tvran[2];	/* tv range */
    614   }      x_tv;			/* info about .tv section (in auxent of symbol .tv)) */
    615 
    616   /******************************************
    617    * RS/6000-specific auxent - last auxent for every external symbol
    618    ******************************************/
    619   struct
    620   {
    621     union
    622       {				/* csect length or enclosing csect */
    623 	bfd_signed_vma l;
    624 	struct coff_ptr_struct *p;
    625       } x_scnlen;
    626     long x_parmhash;		/* parm type hash index */
    627     unsigned short x_snhash;	/* sect num with parm hash */
    628     unsigned char x_smtyp;	/* symbol align and type */
    629     /* 0-4 - Log 2 of alignment */
    630     /* 5-7 - symbol type */
    631     unsigned char x_smclas;	/* storage mapping class */
    632     long x_stab;		/* dbx stab info index */
    633     unsigned short x_snstab;	/* sect num with dbx stab */
    634   }      x_csect;		/* csect definition information */
    635 
    636 /* x_smtyp values:  */
    637 
    638 #define	SMTYP_ALIGN(x)	((x) >> 3)	/* log2 of alignment */
    639 #define	SMTYP_SMTYP(x)	((x) & 0x7)	/* symbol type */
    640 /* Symbol type values:  */
    641 #define	XTY_ER	0		/* External reference */
    642 #define	XTY_SD	1		/* Csect definition */
    643 #define	XTY_LD	2		/* Label definition */
    644 #define XTY_CM	3		/* .BSS */
    645 #define	XTY_EM	4		/* Error message */
    646 #define	XTY_US	5		/* "Reserved for internal use" */
    647 
    648 /* x_smclas values:  */
    649 
    650 #define	XMC_PR	0		/* Read-only program code */
    651 #define	XMC_RO	1		/* Read-only constant */
    652 #define	XMC_DB	2		/* Read-only debug dictionary table */
    653 #define	XMC_TC	3		/* Read-write general TOC entry */
    654 #define	XMC_UA	4		/* Read-write unclassified */
    655 #define	XMC_RW	5		/* Read-write data */
    656 #define	XMC_GL	6		/* Read-only global linkage */
    657 #define	XMC_XO	7		/* Read-only extended operation */
    658 #define	XMC_SV	8		/* Read-only supervisor call */
    659 #define	XMC_BS	9		/* Read-write BSS */
    660 #define	XMC_DS	10		/* Read-write descriptor csect */
    661 #define	XMC_UC	11		/* Read-write unnamed Fortran common */
    662 #define	XMC_TI	12		/* Read-only traceback index csect */
    663 #define	XMC_TB	13		/* Read-only traceback table csect */
    664 /* 		14	??? */
    665 #define	XMC_TC0	15		/* Read-write TOC anchor */
    666 #define XMC_TD	16		/* Read-write data in TOC */
    667 
    668   /******************************************
    669    *  I960-specific *2nd* aux. entry formats
    670    ******************************************/
    671   struct
    672   {
    673     /* This is a very old typo that keeps getting propagated. */
    674 #define x_stdindx x_stindx
    675     long x_stindx;		/* sys. table entry */
    676   }      x_sc;			/* system call entry */
    677 
    678   struct
    679   {
    680     unsigned long x_balntry;	/* BAL entry point */
    681   }      x_bal;			/* BAL-callable function */
    682 
    683   struct
    684   {
    685     unsigned long x_timestamp;	/* time stamp */
    686     char x_idstring[20];	/* producer identity string */
    687   }      x_ident;		/* Producer ident info */
    688 
    689 };
    690 
    691 /********************** RELOCATION DIRECTIVES **********************/
    692 
    693 struct internal_reloc
    694 {
    695   bfd_vma r_vaddr;		/* Virtual address of reference */
    696   long r_symndx;		/* Index into symbol table	*/
    697   unsigned short r_type;	/* Relocation type		*/
    698   unsigned char r_size;		/* Used by RS/6000 and ECOFF	*/
    699   unsigned char r_extern;	/* Used by ECOFF		*/
    700   unsigned long r_offset;	/* Used by Alpha ECOFF, SPARC, others */
    701 };
    702 
    703 /* X86-64 relocations.  */
    704 #define R_AMD64_ABS 		 0 /* Reference is absolute, no relocation is necessary.  */
    705 #define R_AMD64_DIR64		 1 /* 64-bit address (VA).  */
    706 #define R_AMD64_DIR32		 2 /* 32-bit address (VA) R_DIR32.  */
    707 #define R_AMD64_IMAGEBASE	 3 /* 32-bit absolute ref w/o base R_IMAGEBASE.  */
    708 #define R_AMD64_PCRLONG		 4 /* 32-bit relative address from byte following reloc R_PCRLONG.  */
    709 #define R_AMD64_PCRLONG_1	 5 /* 32-bit relative address from byte distance 1 from reloc.  */
    710 #define R_AMD64_PCRLONG_2	 6 /* 32-bit relative address from byte distance 2 from reloc.  */
    711 #define R_AMD64_PCRLONG_3	 7 /* 32-bit relative address from byte distance 3 from reloc.  */
    712 #define R_AMD64_PCRLONG_4	 8 /* 32-bit relative address from byte distance 4 from reloc.  */
    713 #define R_AMD64_PCRLONG_5	 9 /* 32-bit relative address from byte distance 5 from reloc.  */
    714 #define R_AMD64_SECTION		10 /* Section index.  */
    715 #define R_AMD64_SECREL		11 /* 32 bit offset from base of section containing target R_SECREL.  */
    716 #define R_AMD64_SECREL7		12 /* 7 bit unsigned offset from base of section containing target.  */
    717 #define R_AMD64_TOKEN		13 /* 32 bit metadata token.  */
    718 #define R_AMD64_PCRQUAD		14 /* Pseude PC64 relocation - Note: not specified by MS/AMD but need for gas pc-relative 64bit wide relocation generated by ELF.  */
    719 
    720 /* i386 Relocations.  */
    721 
    722 #define R_DIR16 	 1
    723 #define R_REL24          5
    724 #define R_DIR32 	 6
    725 #define R_IMAGEBASE	 7
    726 #define R_SECREL32	11
    727 #define R_RELBYTE	15
    728 #define R_RELWORD	16
    729 #define R_RELLONG	17
    730 #define R_PCRBYTE	18
    731 #define R_PCRWORD	19
    732 #define R_PCRLONG	20
    733 #define R_PCR24         21
    734 #define R_IPRSHORT	24
    735 #define R_IPRLONG	26
    736 #define R_GETSEG	29
    737 #define R_GETPA 	30
    738 #define R_TAGWORD	31
    739 #define R_JUMPTARG	32	/* strange 29k 00xx00xx reloc */
    740 #define R_PARTLS16      32
    741 #define R_PARTMS8       33
    742 
    743 #define R_PCR16L       128
    744 #define R_PCR26L       129
    745 #define R_VRT16        130
    746 #define R_HVRT16       131
    747 #define R_LVRT16       132
    748 #define R_VRT32        133
    749 
    750 
    751 /* This reloc identifies mov.b instructions with a 16bit absolute
    752    address.  The linker tries to turn insns with this reloc into
    753    an absolute 8-bit address.  */
    754 #define R_MOV16B1    	0x41
    755 
    756 /* This reloc identifies mov.b instructions which had a 16bit
    757    absolute address which have been shortened into a 8-bit
    758    absolute address.  */
    759 #define R_MOV16B2 	0x42
    760 
    761 /* This reloc identifies jmp insns with a 16bit target address;
    762    the linker tries to turn these insns into bra insns with
    763    an 8bit pc-relative target.  */
    764 #define R_JMP1     	0x43
    765 
    766 /* This reloc identifies a bra with an 8-bit pc-relative
    767    target that was formerly a jmp insn with a 16bit target.  */
    768 #define R_JMP2 		0x44
    769 
    770 /* ??? */
    771 #define R_RELLONG_NEG  	0x45
    772 
    773 /* This reloc identifies jmp insns with a 24bit target address;
    774    the linker tries to turn these insns into bra insns with
    775    an 8bit pc-relative target.  */
    776 #define R_JMPL1     	0x46
    777 
    778 /* This reloc identifies a bra with an 8-bit pc-relative
    779    target that was formerly a jmp insn with a 24bit target.  */
    780 #define R_JMPL2		0x47
    781 
    782 /* This reloc identifies mov.b instructions with a 24bit absolute
    783    address.  The linker tries to turn insns with this reloc into
    784    an absolute 8-bit address.  */
    785 
    786 #define R_MOV24B1    	0x48
    787 
    788 /* This reloc identifies mov.b instructions which had a 24bit
    789    absolute address which have been shortened into a 8-bit
    790    absolute address.  */
    791 #define R_MOV24B2 	0x49
    792 
    793 /* An h8300 memory indirect jump/call.  Forces the address of the jump/call
    794    target into the function vector (in page zero), and the address of the
    795    vector entry to be placed in the jump/call instruction.  */
    796 #define R_MEM_INDIRECT	0x4a
    797 
    798 /* This reloc identifies a 16bit pc-relative branch target which was
    799    shortened into an 8bit pc-relative branch target.  */
    800 #define R_PCRWORD_B	0x4b
    801 
    802 /* This reloc identifies mov.[wl] instructions with a 32/24 bit
    803    absolute address; the linker may turn this into a mov.[wl]
    804    insn with a 16bit absolute address.  */
    805 #define R_MOVL1    	0x4c
    806 
    807 /* This reloc identifies mov.[wl] insns which formerly had
    808    a 32/24bit absolute address and now have a 16bit absolute address.  */
    809 #define R_MOVL2 	0x4d
    810 
    811 /* This reloc identifies a bCC:8 which will have it's condition
    812    inverted and its target redirected to the target of the branch
    813    in the following insn.  */
    814 #define R_BCC_INV	0x4e
    815 
    816 /* This reloc identifies a jmp instruction that has been deleted.  */
    817 #define R_JMP_DEL	0x4f
    818 
    819 /* Z8k modes */
    820 #define R_IMM16   0x01		/* 16 bit abs */
    821 #define R_JR	  0x02		/* jr  8 bit disp */
    822 #define R_IMM4L   0x23		/* low nibble */
    823 #define R_IMM8    0x22		/* 8 bit abs */
    824 #define R_IMM32   R_RELLONG	/* 32 bit abs */
    825 #define R_CALL    R_DA		/* Absolute address which could be a callr */
    826 #define R_JP	  R_DA		/* Absolute address which could be a jp */
    827 #define R_REL16   0x04		/* 16 bit PC rel */
    828 #define R_CALLR	  0x05		/* callr 12 bit disp */
    829 #define R_SEG     0x10		/* set if in segmented mode */
    830 #define R_IMM4H   0x24		/* high nibble */
    831 #define R_DISP7   0x25          /* djnz displacement */
    832 
    833 /* Z80 modes */
    834 #define R_OFF8    0x32		/* 8 bit signed abs, for (i[xy]+d) */
    835 #define R_IMM24   0x33          /* 24 bit abs */
    836 /* R_JR, R_IMM8, R_IMM16, R_IMM32 - as for Z8k */
    837 
    838 /* H8500 modes */
    839 
    840 #define R_H8500_IMM8  	1		/*  8 bit immediate 	*/
    841 #define R_H8500_IMM16 	2		/* 16 bit immediate	*/
    842 #define R_H8500_PCREL8 	3		/*  8 bit pcrel 	*/
    843 #define R_H8500_PCREL16 4		/* 16 bit pcrel 	*/
    844 #define R_H8500_HIGH8  	5		/* high 8 bits of 24 bit address */
    845 #define R_H8500_LOW16 	7		/* low 16 bits of 24 bit immediate */
    846 #define R_H8500_IMM24	6		/* 24 bit immediate */
    847 #define R_H8500_IMM32   8               /* 32 bit immediate */
    848 #define R_H8500_HIGH16  9		/* high 16 bits of 32 bit immediate */
    849 
    850 /* W65 modes */
    851 
    852 #define R_W65_ABS8	1  /* addr & 0xff 		*/
    853 #define R_W65_ABS16	2  /* addr & 0xffff 		*/
    854 #define R_W65_ABS24	3  /* addr & 0xffffff 		*/
    855 
    856 #define R_W65_ABS8S8    4  /* (addr >> 8) & 0xff 	*/
    857 #define R_W65_ABS8S16   5  /* (addr >> 16) & 0xff 	*/
    858 
    859 #define R_W65_ABS16S8   6  /* (addr >> 8) & 0ffff 	*/
    860 #define R_W65_ABS16S16  7  /* (addr >> 16) & 0ffff 	*/
    861 
    862 #define R_W65_PCR8	8
    863 #define R_W65_PCR16	9
    864 
    865 #define R_W65_DP       10  /* direct page 8 bits only   */
    866 
    867 #endif /* GNU_COFF_INTERNAL_H */
    868