ia64.h revision 84865 
1/* coff information for HP/Intel IA-64.
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
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#define IA64MAGIC	0x200
33
34#define IA64BADMAG(x)	(((x).f_magic != IA64MAGIC))
35
36/* Bits for f_flags:
37 *	F_RELFLG	relocation info stripped from file
38 *	F_EXEC		file is executable (no unresolved external references)
39 *	F_LNNO		line numbers stripped from file
40 *	F_LSYMS		local symbols stripped from file
41 *	F_AR32WR	file has byte ordering of an AR32WR machine (e.g. vax)
42 */
43
44#define F_RELFLG	(0x0001)
45#define F_EXEC		(0x0002)
46#define F_LNNO		(0x0004)
47#define F_LSYMS		(0x0008)
48
49
50#define	FILHDR	struct external_filehdr
51#define	FILHSZ	20
52
53
54/********************** AOUT "OPTIONAL HEADER" **********************/
55
56
57typedef struct
58{
59  char 	magic[2];		/* type of file				*/
60  char	vstamp[2];		/* version stamp			*/
61  char	tsize[4];		/* text size in bytes, padded to FW bdry*/
62  char	dsize[4];		/* initialized data "  "		*/
63  char	bsize[4];		/* uninitialized data "   "		*/
64  char	entry[4];		/* entry pt.				*/
65  char 	text_start[4];		/* base of text used for this file	*/
66#ifndef BFD64
67  char 	data_start[4];		/* base of data used for this file	*/
68#endif
69}
70AOUTHDR;
71
72#define PE32MAGIC	0x10b	/* 32-bit image */
73#define PE32PMAGIC	0x20b	/* 32-bit image inside 64-bit address space */
74
75#define PE32PBADMAG(x) (((x).f_magic != PE32PMAGIC))
76
77#define AOUTSZ		108
78#define AOUTHDRSZ	108
79
80#define OMAGIC          0404    /* object files, eg as output */
81#define ZMAGIC          0413    /* demand load format, eg normal ld output */
82#define STMAGIC		0401	/* target shlib */
83#define SHMAGIC		0443	/* host   shlib */
84
85
86/* define some NT default values */
87/*  #define NT_IMAGE_BASE        0x400000 moved to internal.h */
88#define NT_SECTION_ALIGNMENT 0x1000
89#define NT_FILE_ALIGNMENT    0x200
90#define NT_DEF_RESERVE       0x100000
91#define NT_DEF_COMMIT        0x1000
92
93/********************** SECTION HEADER **********************/
94
95
96struct external_scnhdr {
97	char		s_name[8];	/* section name			*/
98	char		s_paddr[4];	/* physical address, aliased s_nlib */
99	char		s_vaddr[4];	/* virtual address		*/
100	char		s_size[4];	/* section size			*/
101	char		s_scnptr[4];	/* file ptr to raw data for section */
102	char		s_relptr[4];	/* file ptr to relocation	*/
103	char		s_lnnoptr[4];	/* file ptr to line numbers	*/
104	char		s_nreloc[2];	/* number of relocation entries	*/
105	char		s_nlnno[2];	/* number of line number entries*/
106	char		s_flags[4];	/* flags			*/
107};
108
109#define	SCNHDR	struct external_scnhdr
110#define	SCNHSZ	40
111
112/*
113 * names of "special" sections
114 */
115#define _TEXT	".text"
116#define _DATA	".data"
117#define _BSS	".bss"
118#define _COMMENT ".comment"
119#define _LIB ".lib"
120
121/********************** LINE NUMBERS **********************/
122
123/* 1 line number entry for every "breakpointable" source line in a section.
124 * Line numbers are grouped on a per function basis; first entry in a function
125 * grouping will have l_lnno = 0 and in place of physical address will be the
126 * symbol table index of the function name.
127 */
128struct external_lineno {
129	union {
130		char l_symndx[4];	/* function name symbol index, iff l_lnno == 0*/
131		char l_paddr[4];	/* (physical) address of line number	*/
132	} l_addr;
133	char l_lnno[2];	/* line number		*/
134};
135
136
137#define	LINENO	struct external_lineno
138#define	LINESZ	6
139
140
141/********************** SYMBOLS **********************/
142
143#define E_SYMNMLEN	8	/* # characters in a symbol name	*/
144#define E_FILNMLEN	14	/* # characters in a file name		*/
145#define E_DIMNUM	4	/* # array dimensions in auxiliary entry */
146
147struct external_syment
148{
149  union {
150    char e_name[E_SYMNMLEN];
151    struct {
152      char e_zeroes[4];
153      char e_offset[4];
154    } e;
155  } e;
156  char e_value[4];
157  char e_scnum[2];
158  char e_type[2];
159  char e_sclass[1];
160  char e_numaux[1];
161};
162
163#define N_BTMASK	(0xf)
164#define N_TMASK		(0x30)
165#define N_BTSHFT	(4)
166#define N_TSHIFT	(2)
167
168union external_auxent {
169	struct {
170		char x_tagndx[4];	/* str, un, or enum tag indx */
171		union {
172			struct {
173			    char  x_lnno[2]; /* declaration line number */
174			    char  x_size[2]; /* str/union/array size */
175			} x_lnsz;
176			char x_fsize[4];	/* size of function */
177		} x_misc;
178		union {
179			struct {		/* if ISFCN, tag, or .bb */
180			    char x_lnnoptr[4];	/* ptr to fcn line # */
181			    char x_endndx[4];	/* entry ndx past block end */
182			} x_fcn;
183			struct {		/* if ISARY, up to 4 dimen. */
184			    char x_dimen[E_DIMNUM][2];
185			} x_ary;
186		} x_fcnary;
187		char x_tvndx[2];		/* tv index */
188	} x_sym;
189
190	union {
191		char x_fname[E_FILNMLEN];
192		struct {
193			char x_zeroes[4];
194			char x_offset[4];
195		} x_n;
196	} x_file;
197
198	struct {
199		char x_scnlen[4];	/* section length */
200		char x_nreloc[2];	/* # relocation entries */
201		char x_nlinno[2];	/* # line numbers */
202		char x_checksum[4];	/* section COMDAT checksum */
203		char x_associated[2];	/* COMDAT associated section index */
204		char x_comdat[1];	/* COMDAT selection number */
205	} x_scn;
206
207        struct {
208		char x_tvfill[4];	/* tv fill value */
209		char x_tvlen[2];	/* length of .tv */
210		char x_tvran[2][2];	/* tv range */
211	} x_tv;		/* info about .tv section (in auxent of symbol .tv)) */
212
213
214};
215
216#define	SYMENT	struct external_syment
217#define	SYMESZ	18
218#define	AUXENT	union external_auxent
219#define	AUXESZ	18
220
221
222#	define _ETEXT	"etext"
223
224
225/********************** RELOCATION DIRECTIVES **********************/
226
227
228
229struct external_reloc {
230  char r_vaddr[4];
231  char r_symndx[4];
232  char r_type[2];
233};
234
235
236#define RELOC struct external_reloc
237#define RELSZ 10
238
239