source: trunk/libs/newlib/src/include/coff/external.h @ 478

Last change on this file since 478 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
File size: 6.8 KB
Line 
1/* external.h  -- External COFF structures
2   
3   Copyright 2001, 2006, 2010 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
18   MA 02110-1301, USA.  */
19
20#ifndef COFF_EXTERNAL_H
21#define COFF_EXTERNAL_H
22
23#ifndef DO_NOT_DEFINE_FILHDR
24/********************** FILE HEADER **********************/
25
26struct external_filehdr
27  {
28    char f_magic[2];    /* magic number                 */
29    char f_nscns[2];    /* number of sections           */
30    char f_timdat[4];   /* time & date stamp            */
31    char f_symptr[4];   /* file pointer to symtab       */
32    char f_nsyms[4];    /* number of symtab entries     */
33    char f_opthdr[2];   /* sizeof(optional hdr)         */
34    char f_flags[2];    /* flags                        */
35  };
36
37#define FILHDR  struct external_filehdr
38#define FILHSZ  20
39#endif
40
41#ifndef DO_NOT_DEFINE_AOUTHDR
42/********************** AOUT "OPTIONAL HEADER" **********************/
43
44typedef struct external_aouthdr
45  {
46    char magic[2];      /* type of file                         */
47    char vstamp[2];     /* version stamp                        */
48    char tsize[4];      /* text size in bytes, padded to FW bdry*/
49    char dsize[4];      /* initialized data "  "                */
50    char bsize[4];      /* uninitialized data "   "             */
51    char entry[4];      /* entry pt.                            */
52    char text_start[4]; /* base of text used for this file      */
53    char data_start[4]; /* base of data used for this file      */
54  } ATTRIBUTE_PACKED
55AOUTHDR;
56
57#define AOUTHDRSZ 28
58#define AOUTSZ 28
59
60typedef struct external_aouthdr64
61{
62  char magic[2];        /* Type of file.                        */
63  char vstamp[2];       /* Version stamp.                       */
64  char tsize[4];        /* Text size in bytes, padded to FW bdry*/
65  char dsize[4];        /* Initialized data "  ".               */
66  char bsize[4];        /* Uninitialized data "   ".            */
67  char entry[4];        /* Entry pt.                            */
68  char text_start[4];   /* Base of text used for this file.     */
69}
70AOUTHDR64;
71#define AOUTHDRSZ64     24
72
73#endif /* not DO_NOT_DEFINE_AOUTHDR */
74
75#ifndef DO_NOT_DEFINE_SCNHDR
76/********************** SECTION HEADER **********************/
77
78struct external_scnhdr
79  {
80    char s_name[8];     /* section name                         */
81    char s_paddr[4];    /* physical address, aliased s_nlib     */
82    char s_vaddr[4];    /* virtual address                      */
83    char s_size[4];     /* section size                         */
84    char s_scnptr[4];   /* file ptr to raw data for section     */
85    char s_relptr[4];   /* file ptr to relocation               */
86    char s_lnnoptr[4];  /* file ptr to line numbers             */
87    char s_nreloc[2];   /* number of relocation entries         */
88    char s_nlnno[2];    /* number of line number entries        */
89    char s_flags[4];    /* flags                                */
90  };
91
92#define SCNHDR  struct external_scnhdr
93#define SCNHSZ  40
94
95/* Names of "special" sections.  */
96
97#define _TEXT    ".text"
98#define _DATA    ".data"
99#define _BSS     ".bss"
100#define _COMMENT ".comment"
101#define _LIB     ".lib"
102#endif /* not DO_NOT_DEFINE_SCNHDR */
103
104#ifndef DO_NOT_DEFINE_LINENO
105
106/********************** LINE NUMBERS **********************/
107
108#ifndef L_LNNO_SIZE
109#error  L_LNNO_SIZE needs to be defined
110#endif
111
112/* 1 line number entry for every "breakpointable" source line in a section.
113   Line numbers are grouped on a per function basis; first entry in a function
114   grouping will have l_lnno = 0 and in place of physical address will be the
115   symbol table index of the function name.  */
116struct external_lineno
117{
118  union
119  {
120    char l_symndx[4];   /* function name symbol index, iff l_lnno == 0*/
121    char l_paddr[4];    /* (physical) address of line number    */
122  } l_addr;
123
124  char l_lnno[L_LNNO_SIZE];     /* line number          */
125};
126
127#define LINENO  struct external_lineno
128#define LINESZ  (4 + L_LNNO_SIZE)
129
130#if L_LNNO_SIZE == 4
131#define GET_LINENO_LNNO(abfd, ext)      H_GET_32 (abfd,      (ext->l_lnno))
132#define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_32 (abfd, val, (ext->l_lnno))
133#endif
134#if L_LNNO_SIZE == 2
135#define GET_LINENO_LNNO(abfd, ext)      H_GET_16 (abfd,      (ext->l_lnno))
136#define PUT_LINENO_LNNO(abfd, val, ext) H_PUT_16 (abfd, val, (ext->l_lnno))
137#endif
138
139#endif /* not DO_NOT_DEFINE_LINENO */
140
141#ifndef DO_NOT_DEFINE_SYMENT
142/********************** SYMBOLS **********************/
143
144#define E_SYMNMLEN      8       /* # characters in a symbol name        */
145#ifndef E_FILNMLEN
146#define E_FILNMLEN      14
147#endif
148#define E_DIMNUM        4       /* # array dimensions in auxiliary entry */
149
150struct external_syment
151{
152  union
153  {
154    char e_name[E_SYMNMLEN];
155
156    struct
157    {
158      char e_zeroes[4];
159      char e_offset[4];
160    } e;
161  } e;
162
163  char e_value[4];
164  char e_scnum[2];
165  char e_type[2];
166  char e_sclass[1];
167  char e_numaux[1];
168} ATTRIBUTE_PACKED ;
169
170#define SYMENT  struct external_syment
171#define SYMESZ  18     
172
173#ifndef N_BTMASK
174#define N_BTMASK        0xf
175#endif
176
177#ifndef N_TMASK
178#define N_TMASK         0x30
179#endif
180
181#ifndef N_BTSHFT
182#define N_BTSHFT        4
183#endif
184
185#ifndef N_TSHIFT
186#define N_TSHIFT        2
187#endif
188
189#endif /* not DO_NOT_DEFINE_SYMENT */
190
191#ifndef DO_NOT_DEFINE_AUXENT
192
193union external_auxent
194{
195  struct
196  {
197    char x_tagndx[4];           /* str, un, or enum tag indx */
198   
199    union
200    {
201      struct
202      {
203        char  x_lnno[2]; /* declaration line number */
204        char  x_size[2]; /* str/union/array size */
205      } x_lnsz;
206     
207      char x_fsize[4];  /* size of function */
208     
209    } x_misc;
210   
211    union
212    {
213      struct            /* if ISFCN, tag, or .bb */
214      {
215        char x_lnnoptr[4];      /* ptr to fcn line # */
216        char x_endndx[4];       /* entry ndx past block end */
217      } x_fcn;
218     
219      struct            /* if ISARY, up to 4 dimen. */
220      {
221        char x_dimen[E_DIMNUM][2];
222      } x_ary;
223     
224    } x_fcnary;
225   
226    char x_tvndx[2];    /* tv index */
227   
228  } x_sym;
229 
230  union
231  {
232    char x_fname[E_FILNMLEN];
233   
234    struct
235    {
236      char x_zeroes[4];
237      char x_offset[4];
238    } x_n;
239   
240  } x_file;
241 
242  struct
243  {
244    char x_scnlen[4];   /* section length */
245    char x_nreloc[2];   /* # relocation entries */
246    char x_nlinno[2];   /* # line numbers */
247#ifdef INCLUDE_COMDAT_FIELDS_IN_AUXENT
248    char x_checksum[4];            /* section COMDAT checksum         */
249    char x_associated[2];          /* COMDAT associated section index */
250    char x_comdat[1];              /* COMDAT selection number         */
251#endif   
252  } x_scn;
253 
254  struct
255  {
256    char x_tvfill[4];   /* tv fill value */
257    char x_tvlen[2];    /* length of .tv */
258    char x_tvran[2][2]; /* tv range */
259  } x_tv;               /* info about .tv section (in auxent of symbol .tv)) */
260} ATTRIBUTE_PACKED ;
261
262#define AUXENT  union external_auxent
263#define AUXESZ  18
264
265#define _ETEXT  "etext"
266
267#endif /* not DO_NOT_DEFINE_AUXENT */
268
269#endif /* COFF_EXTERNAL_H */
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