1/* coff information for Intel 386/486.
2
3 Copyright 2001 Free Software Foundation, Inc.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18
| 1/* coff information for Intel 386/486.
2
3 Copyright 2001 Free Software Foundation, Inc.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18
|
| 19#define L_LNNO_SIZE 2
20#define INCLUDE_COMDAT_FIELDS_IN_AUXENT
21#include "coff/external.h"
|
19
| 22
|
20/********************** FILE HEADER **********************/
21
22struct external_filehdr {
23 char f_magic[2]; /* magic number */
24 char f_nscns[2]; /* number of sections */
25 char f_timdat[4]; /* time & date stamp */
26 char f_symptr[4]; /* file pointer to symtab */
27 char f_nsyms[4]; /* number of symtab entries */
28 char f_opthdr[2]; /* sizeof(optional hdr) */
29 char f_flags[2]; /* flags */
30};
31
| |
32/* Bits for f_flags:
| 23/* Bits for f_flags:
|
33 * F_RELFLG relocation info stripped from file
34 * F_EXEC file is executable (no unresolved external references)
35 * F_LNNO line numbers stripped from file
36 * F_LSYMS local symbols stripped from file
37 * F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax)
38 */
| 24 F_RELFLG relocation info stripped from file
25 F_EXEC file is executable (no unresolved external references)
26 F_LNNO line numbers stripped from file
27 F_LSYMS local symbols stripped from file
28 F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax). */
|
39
40#define F_RELFLG (0x0001)
41#define F_EXEC (0x0002)
42#define F_LNNO (0x0004)
43#define F_LSYMS (0x0008)
44
| 29
30#define F_RELFLG (0x0001)
31#define F_EXEC (0x0002)
32#define F_LNNO (0x0004)
33#define F_LSYMS (0x0008)
34
|
45
46
| |
47#define I386MAGIC 0x14c
48#define I386PTXMAGIC 0x154
49#define I386AIXMAGIC 0x175
50
51/* This is Lynx's all-platform magic number for executables. */
52
53#define LYNXCOFFMAGIC 0415
54
| 35#define I386MAGIC 0x14c
36#define I386PTXMAGIC 0x154
37#define I386AIXMAGIC 0x175
38
39/* This is Lynx's all-platform magic number for executables. */
40
41#define LYNXCOFFMAGIC 0415
42
|
55#define I386BADMAG(x) (((x).f_magic != I386MAGIC) \
| 43#define I386BADMAG(x) ( ((x).f_magic != I386MAGIC) \
|
56 && (x).f_magic != I386AIXMAGIC \
57 && (x).f_magic != I386PTXMAGIC \
58 && (x).f_magic != LYNXCOFFMAGIC)
59
| 44 && (x).f_magic != I386AIXMAGIC \
45 && (x).f_magic != I386PTXMAGIC \
46 && (x).f_magic != LYNXCOFFMAGIC)
47
|
60#define FILHDR struct external_filehdr
61#define FILHSZ 20
62
63
64/********************** AOUT "OPTIONAL HEADER" **********************/
65
66
67typedef struct
68{
69 char magic[2]; /* type of file */
70 char vstamp[2]; /* version stamp */
71 char tsize[4]; /* text size in bytes, padded to FW bdry*/
72 char dsize[4]; /* initialized data " " */
73 char bsize[4]; /* uninitialized data " " */
74 char entry[4]; /* entry pt. */
75 char text_start[4]; /* base of text used for this file */
76 char data_start[4]; /* base of data used for this file */
77
78
79}
80AOUTHDR;
81
82
83#define AOUTSZ 28
84#define AOUTHDRSZ 28
85
| |
86#define OMAGIC 0404 /* object files, eg as output */
87#define ZMAGIC 0413 /* demand load format, eg normal ld output */
88#define STMAGIC 0401 /* target shlib */
89#define SHMAGIC 0443 /* host shlib */
90
| 48#define OMAGIC 0404 /* object files, eg as output */
49#define ZMAGIC 0413 /* demand load format, eg normal ld output */
50#define STMAGIC 0401 /* target shlib */
51#define SHMAGIC 0443 /* host shlib */
52
|
91
| |
92/* define some NT default values */
93/* #define NT_IMAGE_BASE 0x400000 moved to internal.h */
94#define NT_SECTION_ALIGNMENT 0x1000
95#define NT_FILE_ALIGNMENT 0x200
96#define NT_DEF_RESERVE 0x100000
97#define NT_DEF_COMMIT 0x1000
98
| 53/* define some NT default values */
54/* #define NT_IMAGE_BASE 0x400000 moved to internal.h */
55#define NT_SECTION_ALIGNMENT 0x1000
56#define NT_FILE_ALIGNMENT 0x200
57#define NT_DEF_RESERVE 0x100000
58#define NT_DEF_COMMIT 0x1000
59
|
99/********************** SECTION HEADER **********************/
100
101
102struct external_scnhdr {
103 char s_name[8]; /* section name */
104 char s_paddr[4]; /* physical address, aliased s_nlib */
105 char s_vaddr[4]; /* virtual address */
106 char s_size[4]; /* section size */
107 char s_scnptr[4]; /* file ptr to raw data for section */
108 char s_relptr[4]; /* file ptr to relocation */
109 char s_lnnoptr[4]; /* file ptr to line numbers */
110 char s_nreloc[2]; /* number of relocation entries */
111 char s_nlnno[2]; /* number of line number entries*/
112 char s_flags[4]; /* flags */
113};
114
115#define SCNHDR struct external_scnhdr
116#define SCNHSZ 40
117
118/*
119 * names of "special" sections
120 */
121#define _TEXT ".text"
122#define _DATA ".data"
123#define _BSS ".bss"
124#define _COMMENT ".comment"
125#define _LIB ".lib"
126
127/********************** LINE NUMBERS **********************/
128
129/* 1 line number entry for every "breakpointable" source line in a section.
130 * Line numbers are grouped on a per function basis; first entry in a function
131 * grouping will have l_lnno = 0 and in place of physical address will be the
132 * symbol table index of the function name.
133 */
134struct external_lineno {
135 union {
136 char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
137 char l_paddr[4]; /* (physical) address of line number */
138 } l_addr;
139 char l_lnno[2]; /* line number */
140};
141
142
143#define LINENO struct external_lineno
144#define LINESZ 6
145
146
147/********************** SYMBOLS **********************/
148
149#define E_SYMNMLEN 8 /* # characters in a symbol name */
150#define E_FILNMLEN 14 /* # characters in a file name */
151#define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
152
153struct external_syment
154{
155 union {
156 char e_name[E_SYMNMLEN];
157 struct {
158 char e_zeroes[4];
159 char e_offset[4];
160 } e;
161 } e;
162 char e_value[4];
163 char e_scnum[2];
164 char e_type[2];
165 char e_sclass[1];
166 char e_numaux[1];
167};
168
169#define N_BTMASK (0xf)
170#define N_TMASK (0x30)
171#define N_BTSHFT (4)
172#define N_TSHIFT (2)
173
174union external_auxent {
175 struct {
176 char x_tagndx[4]; /* str, un, or enum tag indx */
177 union {
178 struct {
179 char x_lnno[2]; /* declaration line number */
180 char x_size[2]; /* str/union/array size */
181 } x_lnsz;
182 char x_fsize[4]; /* size of function */
183 } x_misc;
184 union {
185 struct { /* if ISFCN, tag, or .bb */
186 char x_lnnoptr[4]; /* ptr to fcn line # */
187 char x_endndx[4]; /* entry ndx past block end */
188 } x_fcn;
189 struct { /* if ISARY, up to 4 dimen. */
190 char x_dimen[E_DIMNUM][2];
191 } x_ary;
192 } x_fcnary;
193 char x_tvndx[2]; /* tv index */
194 } x_sym;
195
196 union {
197 char x_fname[E_FILNMLEN];
198 struct {
199 char x_zeroes[4];
200 char x_offset[4];
201 } x_n;
202 } x_file;
203
204 struct {
205 char x_scnlen[4]; /* section length */
206 char x_nreloc[2]; /* # relocation entries */
207 char x_nlinno[2]; /* # line numbers */
208 char x_checksum[4]; /* section COMDAT checksum */
209 char x_associated[2]; /* COMDAT associated section index */
210 char x_comdat[1]; /* COMDAT selection number */
211 } x_scn;
212
213 struct {
214 char x_tvfill[4]; /* tv fill value */
215 char x_tvlen[2]; /* length of .tv */
216 char x_tvran[2][2]; /* tv range */
217 } x_tv; /* info about .tv section (in auxent of symbol .tv)) */
218
219
220};
221
222#define SYMENT struct external_syment
223#define SYMESZ 18
224#define AUXENT union external_auxent
225#define AUXESZ 18
226
227
228# define _ETEXT "etext"
229
230
| |
231/********************** RELOCATION DIRECTIVES **********************/
232
| 60/********************** RELOCATION DIRECTIVES **********************/
61
|
233
234
235struct external_reloc {
| 62struct external_reloc
63{
|
236 char r_vaddr[4];
237 char r_symndx[4];
238 char r_type[2];
239};
240
| 64 char r_vaddr[4];
65 char r_symndx[4];
66 char r_type[2];
67};
68
|
241
| |
242#define RELOC struct external_reloc
243#define RELSZ 10
244
| 69#define RELOC struct external_reloc
70#define RELSZ 10
71
|