source: trunk/src/binutils/include/coff/internal.h@ 1722

Last change on this file since 1722 was 610, checked in by bird, 22 years ago

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[10]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 2001 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20#ifndef GNU_COFF_INTERNAL_H
21#define GNU_COFF_INTERNAL_H 1
22
23/* First, make "signed char" work, even on old compilers. */
24#ifndef signed
25#ifndef __STDC__
26#define signed /**/
27#endif
28#endif
29
30/********************** FILE HEADER **********************/
31
32/* extra stuff in a PE header. */
33
34struct internal_extra_pe_filehdr
35{
36 /* DOS header data follows for PE stuff */
37 unsigned short e_magic; /* Magic number, 0x5a4d */
38 unsigned short e_cblp; /* Bytes on last page of file, 0x90 */
39 unsigned short e_cp; /* Pages in file, 0x3 */
40 unsigned short e_crlc; /* Relocations, 0x0 */
41 unsigned short e_cparhdr; /* Size of header in paragraphs, 0x4 */
42 unsigned short e_minalloc; /* Minimum extra paragraphs needed, 0x0 */
43 unsigned short e_maxalloc; /* Maximum extra paragraphs needed, 0xFFFF */
44 unsigned short e_ss; /* Initial (relative) SS value, 0x0 */
45 unsigned short e_sp; /* Initial SP value, 0xb8 */
46 unsigned short e_csum; /* Checksum, 0x0 */
47 unsigned short e_ip; /* Initial IP value, 0x0 */
48 unsigned short e_cs; /* Initial (relative) CS value, 0x0 */
49 unsigned short e_lfarlc; /* File address of relocation table, 0x40 */
50 unsigned short e_ovno; /* Overlay number, 0x0 */
51 unsigned short e_res[4]; /* Reserved words, all 0x0 */
52 unsigned short e_oemid; /* OEM identifier (for e_oeminfo), 0x0 */
53 unsigned short e_oeminfo; /* OEM information; e_oemid specific, 0x0 */
54 unsigned short e_res2[10]; /* Reserved words, all 0x0 */
55 bfd_vma e_lfanew; /* File address of new exe header, 0x80 */
56 unsigned long dos_message[16]; /* text which always follows dos header */
57 bfd_vma nt_signature; /* required NT signature, 0x4550 */
58};
59
60struct internal_filehdr
61{
62 struct internal_extra_pe_filehdr pe;
63
[609]64 /* Standard coff internal info. */
[10]65 unsigned short f_magic; /* magic number */
66 unsigned short f_nscns; /* number of sections */
67 long f_timdat; /* time & date stamp */
68 bfd_vma f_symptr; /* file pointer to symtab */
69 long f_nsyms; /* number of symtab entries */
70 unsigned short f_opthdr; /* sizeof(optional hdr) */
71 unsigned short f_flags; /* flags */
72 unsigned short f_target_id; /* (TI COFF specific) */
73};
74
75
76/* Bits for f_flags:
[609]77 F_RELFLG relocation info stripped from file
78 F_EXEC file is executable (no unresolved external references)
79 F_LNNO line numbers stripped from file
80 F_LSYMS local symbols stripped from file
81 F_AR16WR file is 16-bit little-endian
82 F_AR32WR file is 32-bit little-endian
83 F_AR32W file is 32-bit big-endian
84 F_DYNLOAD rs/6000 aix: dynamically loadable w/imports & exports
85 F_SHROBJ rs/6000 aix: file is a shared object
86 F_DLL PE format DLL. */
[10]87
88#define F_RELFLG (0x0001)
89#define F_EXEC (0x0002)
90#define F_LNNO (0x0004)
91#define F_LSYMS (0x0008)
92#define F_AR16WR (0x0080)
93#define F_AR32WR (0x0100)
94#define F_AR32W (0x0200)
95#define F_DYNLOAD (0x1000)
96#define F_SHROBJ (0x2000)
97#define F_DLL (0x2000)
98
[609]99/* Extra structure which is used in the optional header. */
[10]100typedef struct _IMAGE_DATA_DIRECTORY
101{
102 bfd_vma VirtualAddress;
103 long Size;
104} IMAGE_DATA_DIRECTORY;
105#define IMAGE_NUMBEROF_DIRECTORY_ENTRIES 16
106
107/* Default image base for NT. */
108#define NT_EXE_IMAGE_BASE 0x400000
109#define NT_DLL_IMAGE_BASE 0x10000000
110
111/* Default image base for BeOS. */
112#define BEOS_EXE_IMAGE_BASE 0x80000000
113#define BEOS_DLL_IMAGE_BASE 0x10000000
114
115/* Extra stuff in a PE aouthdr */
116
117#define PE_DEF_SECTION_ALIGNMENT 0x1000
118#ifndef PE_DEF_FILE_ALIGNMENT
119# define PE_DEF_FILE_ALIGNMENT 0x200
120#endif
121
122struct internal_extra_pe_aouthdr
123{
124 /* PE stuff */
125 bfd_vma ImageBase; /* address of specific location in memory that
126 file is located, NT default 0x10000 */
127
128 bfd_vma SectionAlignment; /* section alignment default 0x1000 */
129 bfd_vma FileAlignment; /* file alignment default 0x200 */
130 short MajorOperatingSystemVersion; /* minimum version of the operating */
131 short MinorOperatingSystemVersion; /* system req'd for exe, default to 1*/
132 short MajorImageVersion; /* user defineable field to store version of */
133 short MinorImageVersion; /* exe or dll being created, default to 0 */
134 short MajorSubsystemVersion; /* minimum subsystem version required to */
135 short MinorSubsystemVersion; /* run exe; default to 3.1 */
136 long Reserved1; /* seems to be 0 */
137 long SizeOfImage; /* size of memory to allocate for prog */
138 long SizeOfHeaders; /* size of PE header and section table */
139 long CheckSum; /* set to 0 */
140 short Subsystem;
141
142 /* type of subsystem exe uses for user interface,
143 possible values:
144 1 - NATIVE Doesn't require a subsystem
145 2 - WINDOWS_GUI runs in Windows GUI subsystem
146 3 - WINDOWS_CUI runs in Windows char sub. (console app)
147 5 - OS2_CUI runs in OS/2 character subsystem
148 7 - POSIX_CUI runs in Posix character subsystem */
149 short DllCharacteristics; /* flags for DLL init, use 0 */
150 bfd_vma SizeOfStackReserve; /* amount of memory to reserve */
151 bfd_vma SizeOfStackCommit; /* amount of memory initially committed for
152 initial thread's stack, default is 0x1000 */
153 bfd_vma SizeOfHeapReserve; /* amount of virtual memory to reserve and */
154 bfd_vma SizeOfHeapCommit; /* commit, don't know what to defaut it to */
155 long LoaderFlags; /* can probably set to 0 */
156 long NumberOfRvaAndSizes; /* number of entries in next entry, 16 */
157 IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
158};
159
160/********************** AOUT "OPTIONAL HEADER" **********************/
161struct internal_aouthdr
162{
163 short magic; /* type of file */
164 short vstamp; /* version stamp */
165 bfd_vma tsize; /* text size in bytes, padded to FW bdry*/
166 bfd_vma dsize; /* initialized data " " */
167 bfd_vma bsize; /* uninitialized data " " */
168 bfd_vma entry; /* entry pt. */
169 bfd_vma text_start; /* base of text used for this file */
170 bfd_vma data_start; /* base of data used for this file */
171
172 /* i960 stuff */
173 unsigned long tagentries; /* number of tag entries to follow */
174
175 /* RS/6000 stuff */
[609]176 bfd_vma o_toc; /* address of TOC */
[10]177 short o_snentry; /* section number for entry point */
178 short o_sntext; /* section number for text */
179 short o_sndata; /* section number for data */
180 short o_sntoc; /* section number for toc */
181 short o_snloader; /* section number for loader section */
182 short o_snbss; /* section number for bss */
183 short o_algntext; /* max alignment for text */
184 short o_algndata; /* max alignment for data */
185 short o_modtype; /* Module type field, 1R,RE,RO */
186 short o_cputype; /* Encoded CPU type */
[609]187 bfd_vma o_maxstack; /* max stack size allowed. */
188 bfd_vma o_maxdata; /* max data size allowed. */
[10]189
190 /* ECOFF stuff */
191 bfd_vma bss_start; /* Base of bss section. */
192 bfd_vma gp_value; /* GP register value. */
193 unsigned long gprmask; /* General registers used. */
194 unsigned long cprmask[4]; /* Coprocessor registers used. */
195 unsigned long fprmask; /* Floating pointer registers used. */
196
197 /* Apollo stuff */
198 long o_inlib; /* inlib data */
199 long o_sri; /* Static Resource Information */
200 long vid[2]; /* Version id */
201
202 struct internal_extra_pe_aouthdr pe;
203};
204
205/********************** STORAGE CLASSES **********************/
206
207/* This used to be defined as -1, but now n_sclass is unsigned. */
208#define C_EFCN 0xff /* physical end of function */
209#define C_NULL 0
210#define C_AUTO 1 /* automatic variable */
211#define C_EXT 2 /* external symbol */
212#define C_STAT 3 /* static */
213#define C_REG 4 /* register variable */
214#define C_EXTDEF 5 /* external definition */
215#define C_LABEL 6 /* label */
216#define C_ULABEL 7 /* undefined label */
217#define C_MOS 8 /* member of structure */
218#define C_ARG 9 /* function argument */
219#define C_STRTAG 10 /* structure tag */
220#define C_MOU 11 /* member of union */
221#define C_UNTAG 12 /* union tag */
222#define C_TPDEF 13 /* type definition */
223#define C_USTATIC 14 /* undefined static */
224#define C_ENTAG 15 /* enumeration tag */
225#define C_MOE 16 /* member of enumeration */
226#define C_REGPARM 17 /* register parameter */
227#define C_FIELD 18 /* bit field */
228#define C_AUTOARG 19 /* auto argument */
229#define C_LASTENT 20 /* dummy entry (end of block) */
230#define C_BLOCK 100 /* ".bb" or ".eb" */
231#define C_FCN 101 /* ".bf" or ".ef" */
232#define C_EOS 102 /* end of structure */
233#define C_FILE 103 /* file name */
234#define C_LINE 104 /* line # reformatted as symbol table entry */
235#define C_ALIAS 105 /* duplicate tag */
236#define C_HIDDEN 106 /* ext symbol in dmert public lib */
237
238#define C_WEAKEXT 127 /* weak symbol -- GNU extension */
239
240/* New storage classes for TI COFF */
241#define C_UEXT 19 /* Tentative external definition */
242#define C_STATLAB 20 /* Static load time label */
243#define C_EXTLAB 21 /* External load time label */
244#define C_SYSTEM 23 /* System Wide variable */
245
246/* New storage classes for WINDOWS_NT */
247#define C_SECTION 104 /* section name */
248#define C_NT_WEAK 105 /* weak external */
249
250 /* New storage classes for 80960 */
251
252/* C_LEAFPROC is obsolete. Use C_LEAFEXT or C_LEAFSTAT */
253#define C_LEAFPROC 108 /* Leaf procedure, "call" via BAL */
254
255#define C_SCALL 107 /* Procedure reachable via system call */
256#define C_LEAFEXT 108 /* External leaf */
257#define C_LEAFSTAT 113 /* Static leaf */
258#define C_OPTVAR 109 /* Optimized variable */
259#define C_DEFINE 110 /* Preprocessor #define */
260#define C_PRAGMA 111 /* Advice to compiler or linker */
261#define C_SEGMENT 112 /* 80960 segment name */
262
263 /* Storage classes for m88k */
264#define C_SHADOW 107 /* shadow symbol */
265#define C_VERSION 108 /* coff version symbol */
266
267 /* New storage classes for RS/6000 */
268#define C_HIDEXT 107 /* Un-named external symbol */
269#define C_BINCL 108 /* Marks beginning of include file */
270#define C_EINCL 109 /* Marks ending of include file */
271
272 /* storage classes for stab symbols for RS/6000 */
273#define C_GSYM (0x80)
274#define C_LSYM (0x81)
275#define C_PSYM (0x82)
276#define C_RSYM (0x83)
277#define C_RPSYM (0x84)
278#define C_STSYM (0x85)
279#define C_TCSYM (0x86)
280#define C_BCOMM (0x87)
281#define C_ECOML (0x88)
282#define C_ECOMM (0x89)
283#define C_DECL (0x8c)
284#define C_ENTRY (0x8d)
285#define C_FUN (0x8e)
286#define C_BSTAT (0x8f)
287#define C_ESTAT (0x90)
288
289/* Storage classes for Thumb symbols */
290#define C_THUMBEXT (128 + C_EXT) /* 130 */
291#define C_THUMBSTAT (128 + C_STAT) /* 131 */
292#define C_THUMBLABEL (128 + C_LABEL) /* 134 */
293#define C_THUMBEXTFUNC (C_THUMBEXT + 20) /* 150 */
294#define C_THUMBSTATFUNC (C_THUMBSTAT + 20) /* 151 */
295
296/********************** SECTION HEADER **********************/
297
298#define SCNNMLEN (8)
299
300struct internal_scnhdr
301{
302 char s_name[SCNNMLEN]; /* section name */
303
304 /* Physical address, aliased s_nlib.
305 In the pei format, this field is the virtual section size
306 (the size of the section after being loaded int memory),
307 NOT the physical address. */
308 bfd_vma s_paddr;
309
310 bfd_vma s_vaddr; /* virtual address */
311 bfd_vma s_size; /* section size */
312 bfd_vma s_scnptr; /* file ptr to raw data for section */
313 bfd_vma s_relptr; /* file ptr to relocation */
314 bfd_vma s_lnnoptr; /* file ptr to line numbers */