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) 1999-2016 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   int 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	((int)0)	/* undefined symbol */
501 #define N_ABS	((int)-1)	/* value of symbol is absolute */
502 #define N_DEBUG	((int)-2)	/* debugging symbol -- value is meaningless */
503 #define N_TV	((int)-3)	/* indicates symbol needs preload transfer vector */
504 #define P_TV	((int)-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     /* PR 17754: We use to FILNMLEN for the size of the x_fname
592        array, but that cause problems as PE targets use a larger
593        value.  We cannot use their definition of EFILNMLEN as this
594        header can be used without including any PE headers.  */
595     char x_fname[20];
596     struct
597     {
598       long x_zeroes;
599       long x_offset;
600     }      x_n;
601   }     x_file;
602 
603   struct
604   {
605     long x_scnlen;		/* section length */
606     unsigned short x_nreloc;	/* # relocation entries */
607     unsigned short x_nlinno;	/* # line numbers */
608     unsigned long x_checksum;	/* section COMDAT checksum for PE */
609     unsigned short x_associated; /* COMDAT associated section index for PE */
610     unsigned char x_comdat;	/* COMDAT selection number for PE */
611   }      x_scn;
612 
613   struct
614   {
615     long x_tvfill;		/* tv fill value */
616     unsigned short x_tvlen;	/* length of .tv */
617     unsigned short x_tvran[2];	/* tv range */
618   }      x_tv;			/* info about .tv section (in auxent of symbol .tv)) */
619 
620   /******************************************
621    * RS/6000-specific auxent - last auxent for every external symbol
622    ******************************************/
623   struct
624   {
625     union
626       {				/* csect length or enclosing csect */
627 	bfd_signed_vma l;
628 	struct coff_ptr_struct *p;
629       } x_scnlen;
630     long x_parmhash;		/* parm type hash index */
631     unsigned short x_snhash;	/* sect num with parm hash */
632     unsigned char x_smtyp;	/* symbol align and type */
633     /* 0-4 - Log 2 of alignment */
634     /* 5-7 - symbol type */
635     unsigned char x_smclas;	/* storage mapping class */
636     long x_stab;		/* dbx stab info index */
637     unsigned short x_snstab;	/* sect num with dbx stab */
638   }      x_csect;		/* csect definition information */
639 
640 /* x_smtyp values:  */
641 
642 #define	SMTYP_ALIGN(x)	((x) >> 3)	/* log2 of alignment */
643 #define	SMTYP_SMTYP(x)	((x) & 0x7)	/* symbol type */
644 /* Symbol type values:  */
645 #define	XTY_ER	0		/* External reference */
646 #define	XTY_SD	1		/* Csect definition */
647 #define	XTY_LD	2		/* Label definition */
648 #define XTY_CM	3		/* .BSS */
649 #define	XTY_EM	4		/* Error message */
650 #define	XTY_US	5		/* "Reserved for internal use" */
651 
652 /* x_smclas values:  */
653 
654 #define	XMC_PR	0		/* Read-only program code */
655 #define	XMC_RO	1		/* Read-only constant */
656 #define	XMC_DB	2		/* Read-only debug dictionary table */
657 #define	XMC_TC	3		/* Read-write general TOC entry */
658 #define	XMC_UA	4		/* Read-write unclassified */
659 #define	XMC_RW	5		/* Read-write data */
660 #define	XMC_GL	6		/* Read-only global linkage */
661 #define	XMC_XO	7		/* Read-only extended operation */
662 #define	XMC_SV	8		/* Read-only supervisor call */
663 #define	XMC_BS	9		/* Read-write BSS */
664 #define	XMC_DS	10		/* Read-write descriptor csect */
665 #define	XMC_UC	11		/* Read-write unnamed Fortran common */
666 #define	XMC_TI	12		/* Read-only traceback index csect */
667 #define	XMC_TB	13		/* Read-only traceback table csect */
668 /* 		14	??? */
669 #define	XMC_TC0	15		/* Read-write TOC anchor */
670 #define XMC_TD	16		/* Read-write data in TOC */
671 
672   /******************************************
673    *  I960-specific *2nd* aux. entry formats
674    ******************************************/
675   struct
676   {
677     /* This is a very old typo that keeps getting propagated. */
678 #define x_stdindx x_stindx
679     long x_stindx;		/* sys. table entry */
680   }      x_sc;			/* system call entry */
681 
682   struct
683   {
684     unsigned long x_balntry;	/* BAL entry point */
685   }      x_bal;			/* BAL-callable function */
686 
687   struct
688   {
689     unsigned long x_timestamp;	/* time stamp */
690     char x_idstring[20];	/* producer identity string */
691   }      x_ident;		/* Producer ident info */
692 
693 };
694 
695 /********************** RELOCATION DIRECTIVES **********************/
696 
697 struct internal_reloc
698 {
699   bfd_vma r_vaddr;		/* Virtual address of reference */
700   long r_symndx;		/* Index into symbol table	*/
701   unsigned short r_type;	/* Relocation type		*/
702   unsigned char r_size;		/* Used by RS/6000 and ECOFF	*/
703   unsigned char r_extern;	/* Used by ECOFF		*/
704   unsigned long r_offset;	/* Used by Alpha ECOFF, SPARC, others */
705 };
706 
707 /* X86-64 relocations.  */
708 #define R_AMD64_ABS 		 0 /* Reference is absolute, no relocation is necessary.  */
709 #define R_AMD64_DIR64		 1 /* 64-bit address (VA).  */
710 #define R_AMD64_DIR32		 2 /* 32-bit address (VA) R_DIR32.  */
711 #define R_AMD64_IMAGEBASE	 3 /* 32-bit absolute ref w/o base R_IMAGEBASE.  */
712 #define R_AMD64_PCRLONG		 4 /* 32-bit relative address from byte following reloc R_PCRLONG.  */
713 #define R_AMD64_PCRLONG_1	 5 /* 32-bit relative address from byte distance 1 from reloc.  */
714 #define R_AMD64_PCRLONG_2	 6 /* 32-bit relative address from byte distance 2 from reloc.  */
715 #define R_AMD64_PCRLONG_3	 7 /* 32-bit relative address from byte distance 3 from reloc.  */
716 #define R_AMD64_PCRLONG_4	 8 /* 32-bit relative address from byte distance 4 from reloc.  */
717 #define R_AMD64_PCRLONG_5	 9 /* 32-bit relative address from byte distance 5 from reloc.  */
718 #define R_AMD64_SECTION		10 /* Section index.  */
719 #define R_AMD64_SECREL		11 /* 32 bit offset from base of section containing target R_SECREL.  */
720 #define R_AMD64_SECREL7		12 /* 7 bit unsigned offset from base of section containing target.  */
721 #define R_AMD64_TOKEN		13 /* 32 bit metadata token.  */
722 #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.  */
723 
724 /* i386 Relocations.  */
725 
726 #define R_DIR16 	 1
727 #define R_REL24          5
728 #define R_DIR32 	 6
729 #define R_IMAGEBASE	 7
730 #define R_SECREL32	11
731 #define R_RELBYTE	15
732 #define R_RELWORD	16
733 #define R_RELLONG	17
734 #define R_PCRBYTE	18
735 #define R_PCRWORD	19
736 #define R_PCRLONG	20
737 #define R_PCR24         21
738 #define R_IPRSHORT	24
739 #define R_IPRLONG	26
740 #define R_GETSEG	29
741 #define R_GETPA 	30
742 #define R_TAGWORD	31
743 #define R_JUMPTARG	32	/* strange 29k 00xx00xx reloc */
744 #define R_PARTLS16      32
745 #define R_PARTMS8       33
746 
747 #define R_PCR16L       128
748 #define R_PCR26L       129
749 #define R_VRT16        130
750 #define R_HVRT16       131
751 #define R_LVRT16       132
752 #define R_VRT32        133
753 
754 
755 /* This reloc identifies mov.b instructions with a 16bit absolute
756    address.  The linker tries to turn insns with this reloc into
757    an absolute 8-bit address.  */
758 #define R_MOV16B1    	0x41
759 
760 /* This reloc identifies mov.b instructions which had a 16bit
761    absolute address which have been shortened into a 8-bit
762    absolute address.  */
763 #define R_MOV16B2 	0x42
764 
765 /* This reloc identifies jmp insns with a 16bit target address;
766    the linker tries to turn these insns into bra insns with
767    an 8bit pc-relative target.  */
768 #define R_JMP1     	0x43
769 
770 /* This reloc identifies a bra with an 8-bit pc-relative
771    target that was formerly a jmp insn with a 16bit target.  */
772 #define R_JMP2 		0x44
773 
774 /* ??? */
775 #define R_RELLONG_NEG  	0x45
776 
777 /* This reloc identifies jmp insns with a 24bit target address;
778    the linker tries to turn these insns into bra insns with
779    an 8bit pc-relative target.  */
780 #define R_JMPL1     	0x46
781 
782 /* This reloc identifies a bra with an 8-bit pc-relative
783    target that was formerly a jmp insn with a 24bit target.  */
784 #define R_JMPL2		0x47
785 
786 /* This reloc identifies mov.b instructions with a 24bit absolute
787    address.  The linker tries to turn insns with this reloc into
788    an absolute 8-bit address.  */
789 
790 #define R_MOV24B1    	0x48
791 
792 /* This reloc identifies mov.b instructions which had a 24bit
793    absolute address which have been shortened into a 8-bit
794    absolute address.  */
795 #define R_MOV24B2 	0x49
796 
797 /* An h8300 memory indirect jump/call.  Forces the address of the jump/call
798    target into the function vector (in page zero), and the address of the
799    vector entry to be placed in the jump/call instruction.  */
800 #define R_MEM_INDIRECT	0x4a
801 
802 /* This reloc identifies a 16bit pc-relative branch target which was
803    shortened into an 8bit pc-relative branch target.  */
804 #define R_PCRWORD_B	0x4b
805 
806 /* This reloc identifies mov.[wl] instructions with a 32/24 bit
807    absolute address; the linker may turn this into a mov.[wl]
808    insn with a 16bit absolute address.  */
809 #define R_MOVL1    	0x4c
810 
811 /* This reloc identifies mov.[wl] insns which formerly had
812    a 32/24bit absolute address and now have a 16bit absolute address.  */
813 #define R_MOVL2 	0x4d
814 
815 /* This reloc identifies a bCC:8 which will have it's condition
816    inverted and its target redirected to the target of the branch
817    in the following insn.  */
818 #define R_BCC_INV	0x4e
819 
820 /* This reloc identifies a jmp instruction that has been deleted.  */
821 #define R_JMP_DEL	0x4f
822 
823 /* Z8k modes */
824 #define R_IMM16   0x01		/* 16 bit abs */
825 #define R_JR	  0x02		/* jr  8 bit disp */
826 #define R_IMM4L   0x23		/* low nibble */
827 #define R_IMM8    0x22		/* 8 bit abs */
828 #define R_IMM32   R_RELLONG	/* 32 bit abs */
829 #define R_CALL    R_DA		/* Absolute address which could be a callr */
830 #define R_JP	  R_DA		/* Absolute address which could be a jp */
831 #define R_REL16   0x04		/* 16 bit PC rel */
832 #define R_CALLR	  0x05		/* callr 12 bit disp */
833 #define R_SEG     0x10		/* set if in segmented mode */
834 #define R_IMM4H   0x24		/* high nibble */
835 #define R_DISP7   0x25          /* djnz displacement */
836 
837 /* Z80 modes */
838 #define R_OFF8    0x32		/* 8 bit signed abs, for (i[xy]+d) */
839 #define R_IMM24   0x33          /* 24 bit abs */
840 /* R_JR, R_IMM8, R_IMM16, R_IMM32 - as for Z8k */
841 
842 /* H8500 modes */
843 
844 #define R_H8500_IMM8  	1		/*  8 bit immediate 	*/
845 #define R_H8500_IMM16 	2		/* 16 bit immediate	*/
846 #define R_H8500_PCREL8 	3		/*  8 bit pcrel 	*/
847 #define R_H8500_PCREL16 4		/* 16 bit pcrel 	*/
848 #define R_H8500_HIGH8  	5		/* high 8 bits of 24 bit address */
849 #define R_H8500_LOW16 	7		/* low 16 bits of 24 bit immediate */
850 #define R_H8500_IMM24	6		/* 24 bit immediate */
851 #define R_H8500_IMM32   8               /* 32 bit immediate */
852 #define R_H8500_HIGH16  9		/* high 16 bits of 32 bit immediate */
853 
854 /* W65 modes */
855 
856 #define R_W65_ABS8	1  /* addr & 0xff 		*/
857 #define R_W65_ABS16	2  /* addr & 0xffff 		*/
858 #define R_W65_ABS24	3  /* addr & 0xffffff 		*/
859 
860 #define R_W65_ABS8S8    4  /* (addr >> 8) & 0xff 	*/
861 #define R_W65_ABS8S16   5  /* (addr >> 16) & 0xff 	*/
862 
863 #define R_W65_ABS16S8   6  /* (addr >> 8) & 0ffff 	*/
864 #define R_W65_ABS16S16  7  /* (addr >> 16) & 0ffff 	*/
865 
866 #define R_W65_PCR8	8
867 #define R_W65_PCR16	9
868 
869 #define R_W65_DP       10  /* direct page 8 bits only   */
870 
871 #endif /* GNU_COFF_INTERNAL_H */
872