sparc.h revision 78828 
1/* coff information for Sparc.
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/* This file is an amalgamation of several standard include files that
20   define coff format, such as filehdr.h, aouthdr.h, and so forth.  In
21   addition, all datatypes have been translated into character arrays of
22   (presumed) equivalent size.  This is necessary so that this file can
23   be used with different systems while still yielding the same results.  */
24
25/********************** FILE HEADER **********************/
26
27struct external_filehdr
28{
29  char f_magic[2];		/* magic number			*/
30  char f_nscns[2];		/* number of sections		*/
31  char f_timdat[4];		/* time & date stamp		*/
32  char f_symptr[4];		/* file pointer to symtab	*/
33  char f_nsyms[4];		/* number of symtab entries	*/
34  char f_opthdr[2];		/* sizeof(optional hdr)		*/
35  char f_flags[2];		/* flags			*/
36};
37
38#define F_RELFLG	(0x0001)	/* relocation info stripped */
39#define F_EXEC		(0x0002)	/* file is executable */
40#define F_LNNO		(0x0004)	/* line numbers stripped */
41#define F_LSYMS		(0x0008)	/* local symbols stripped */
42
43#define SPARCMAGIC	(0540)
44
45/* This is Lynx's all-platform magic number for executables. */
46
47#define LYNXCOFFMAGIC	(0415)
48
49#define	FILHDR	struct external_filehdr
50#define	FILHSZ	20
51
52/********************** AOUT "OPTIONAL HEADER" **********************/
53
54typedef struct
55{
56  char magic[2];		/* type of file				*/
57  char vstamp[2];		/* version stamp			*/
58  char tsize[4];		/* text size in bytes, padded to FW bdry*/
59  char dsize[4];		/* initialized data "  "		*/
60  char bsize[4];		/* uninitialized data "   "		*/
61  char entry[4];		/* entry pt.				*/
62  char text_start[4];		/* base of text used for this file */
63  char data_start[4];		/* base of data used for this file */
64}
65AOUTHDR;
66
67#define AOUTSZ 28
68#define AOUTHDRSZ 28
69
70#define OMAGIC          0404    /* object files, eg as output */
71#define ZMAGIC          0413    /* demand load format, eg normal ld output */
72#define STMAGIC		0401	/* target shlib */
73#define SHMAGIC		0443	/* host   shlib */
74
75/********************** SECTION HEADER **********************/
76
77struct external_scnhdr
78{
79  char s_name[8];		/* section name			*/
80  char s_paddr[4];		/* physical address, aliased s_nlib */
81  char s_vaddr[4];		/* virtual address		*/
82  char s_size[4];		/* section size			*/
83  char s_scnptr[4];		/* file ptr to raw data for section */
84  char s_relptr[4];		/* file ptr to relocation	*/
85  char s_lnnoptr[4];		/* file ptr to line numbers	*/
86  char s_nreloc[2];		/* number of relocation entries	*/
87  char s_nlnno[2];		/* number of line number entries*/
88  char s_flags[4];		/* flags			*/
89};
90
91#define	SCNHDR	struct external_scnhdr
92#define	SCNHSZ	40
93
94/* Names of "special" sections. */
95
96#define _TEXT	".text"
97#define _DATA	".data"
98#define _BSS	".bss"
99#define _TV	".tv"
100#define _INIT	".init"
101#define _FINI	".fini"
102#define _COMMENT ".comment"
103#define _LIB ".lib"
104
105/********************** LINE NUMBERS **********************/
106
107/* 1 line number entry for every "breakpointable" source line in a section.
108   Line numbers are grouped on a per function basis; first entry in a function
109   grouping will have l_lnno = 0 and in place of physical address will be the
110   symbol table index of the function name. */
111
112struct external_lineno
113{
114  union {
115    char l_symndx[4];		/* fn name symbol index, iff l_lnno == 0 */
116    char l_paddr[4];		/* (physical) address of line number */
117  } l_addr;
118  char l_lnno[2];		/* line number */
119};
120
121#define	LINENO	struct external_lineno
122#define	LINESZ	(6)
123
124/********************** SYMBOLS **********************/
125
126#define E_SYMNMLEN	(8)	/* # characters in a symbol name	*/
127#define E_FILNMLEN	(14)	/* # characters in a file name		*/
128#define E_DIMNUM	(4)	/* # array dimensions in auxiliary entry */
129
130struct external_syment
131{
132  union {
133    char e_name[E_SYMNMLEN];
134    struct {
135      char e_zeroes[4];
136      char e_offset[4];
137    } e;
138#if 0 /* of doubtful value */
139    char e_nptr[2][4];
140    struct {
141      char e_leading_zero[1];
142      char e_dbx_type[1];
143      char e_dbx_desc[2];
144    } e_dbx;
145#endif
146  } e;
147
148  char e_value[4];
149  char e_scnum[2];
150  char e_type[2];
151  char e_sclass[1];
152  char e_numaux[1];
153  char padding[2];
154};
155
156#define N_BTMASK	(0xf)
157#define N_TMASK		(0x30)
158#define N_BTSHFT	(4)
159#define N_TSHIFT	(2)
160
161union external_auxent
162{
163  struct {
164    char x_tagndx[4];		/* str, un, or enum tag indx */
165    union {
166      struct {
167	char  x_lnno[2];	/* declaration line number */
168	char  x_size[2];	/* str/union/array size */
169      } x_lnsz;
170      char x_fsize[4];		/* size of function */
171    } x_misc;
172    union {
173      struct {			/* if ISFCN, tag, or .bb */
174	char x_lnnoptr[4];	/* ptr to fcn line # */
175	char x_endndx[4];	/* entry ndx past block end */
176      } x_fcn;
177      struct {		/* if ISARY, up to 4 dimen. */
178	char x_dimen[E_DIMNUM][2];
179      } x_ary;
180    } x_fcnary;
181    char x_tvndx[2];		/* tv index */
182  } x_sym;
183
184  union {
185    char x_fname[E_FILNMLEN];
186    struct {
187      char x_zeroes[4];
188      char x_offset[4];
189    } x_n;
190  } x_file;
191
192  struct {
193    char x_scnlen[4];		/* section length */
194    char x_nreloc[2];		/* # relocation entries */
195    char x_nlinno[2];		/* # line numbers */
196  } x_scn;
197
198  struct {
199    char x_tvfill[4];		/* tv fill value */
200    char x_tvlen[2];		/* length of .tv */
201    char x_tvran[2][2];		/* tv range */
202  } x_tv;			/* .tv section info (in auxent of sym .tv)) */
203
204  char x_fill[20];		/* forces to 20-byte size */
205};
206
207#define	SYMENT	struct external_syment
208#define	SYMESZ	20
209#define	AUXENT	union external_auxent
210#define	AUXESZ	20
211
212#define _ETEXT	"etext"
213
214/********************** RELOCATION DIRECTIVES **********************/
215
216struct external_reloc {
217  char r_vaddr[4];
218  char r_symndx[4];
219  char r_type[2];
220  char r_spare[2];
221  char r_offset[4];
222};
223
224#define RELOC struct external_reloc
225#define RELSZ 16
226
227