1 |
330 |
jeremybenn |
/* IBM RS/6000 "XCOFF" file definitions for BFD.
|
2 |
|
|
Copyright (C) 1990, 1991, 2001, 2010 Free Software Foundation, Inc.
|
3 |
|
|
Written by Mimi Phuong-Thao Vo of IBM
|
4 |
|
|
and John Gilmore of Cygnus Support.
|
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
|
19 |
|
|
MA 02110-1301, USA. */
|
20 |
|
|
|
21 |
|
|
/********************** FILE HEADER **********************/
|
22 |
|
|
|
23 |
|
|
struct external_filehdr {
|
24 |
|
|
char f_magic[2]; /* magic number */
|
25 |
|
|
char f_nscns[2]; /* number of sections */
|
26 |
|
|
char f_timdat[4]; /* time & date stamp */
|
27 |
|
|
char f_symptr[4]; /* file pointer to symtab */
|
28 |
|
|
char f_nsyms[4]; /* number of symtab entries */
|
29 |
|
|
char f_opthdr[2]; /* sizeof(optional hdr) */
|
30 |
|
|
char f_flags[2]; /* flags */
|
31 |
|
|
};
|
32 |
|
|
|
33 |
|
|
/* IBM RS/6000 */
|
34 |
|
|
#define U802WRMAGIC 0730 /* writeable text segments **chh** */
|
35 |
|
|
#define U802ROMAGIC 0735 /* readonly sharable text segments */
|
36 |
|
|
#define U802TOCMAGIC 0737 /* readonly text segments and TOC */
|
37 |
|
|
|
38 |
|
|
#define BADMAG(x) \
|
39 |
|
|
((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \
|
40 |
|
|
(x).f_magic != U802TOCMAGIC)
|
41 |
|
|
|
42 |
|
|
#define FILHDR struct external_filehdr
|
43 |
|
|
#define FILHSZ 20
|
44 |
|
|
|
45 |
|
|
|
46 |
|
|
/********************** AOUT "OPTIONAL HEADER" **********************/
|
47 |
|
|
|
48 |
|
|
|
49 |
|
|
typedef struct
|
50 |
|
|
{
|
51 |
|
|
unsigned char magic[2]; /* type of file */
|
52 |
|
|
unsigned char vstamp[2]; /* version stamp */
|
53 |
|
|
unsigned char tsize[4]; /* text size in bytes, padded to FW bdry */
|
54 |
|
|
unsigned char dsize[4]; /* initialized data " " */
|
55 |
|
|
unsigned char bsize[4]; /* uninitialized data " " */
|
56 |
|
|
unsigned char entry[4]; /* entry pt. */
|
57 |
|
|
unsigned char text_start[4]; /* base of text used for this file */
|
58 |
|
|
unsigned char data_start[4]; /* base of data used for this file */
|
59 |
|
|
unsigned char o_toc[4]; /* address of TOC */
|
60 |
|
|
unsigned char o_snentry[2]; /* section number of entry point */
|
61 |
|
|
unsigned char o_sntext[2]; /* section number of .text section */
|
62 |
|
|
unsigned char o_sndata[2]; /* section number of .data section */
|
63 |
|
|
unsigned char o_sntoc[2]; /* section number of TOC */
|
64 |
|
|
unsigned char o_snloader[2]; /* section number of .loader section */
|
65 |
|
|
unsigned char o_snbss[2]; /* section number of .bss section */
|
66 |
|
|
unsigned char o_algntext[2]; /* .text alignment */
|
67 |
|
|
unsigned char o_algndata[2]; /* .data alignment */
|
68 |
|
|
unsigned char o_modtype[2]; /* module type (??) */
|
69 |
|
|
unsigned char o_cputype[2]; /* cpu type */
|
70 |
|
|
unsigned char o_maxstack[4]; /* max stack size (??) */
|
71 |
|
|
unsigned char o_maxdata[4]; /* max data size (??) */
|
72 |
|
|
unsigned char o_resv2[12]; /* reserved */
|
73 |
|
|
}
|
74 |
|
|
AOUTHDR;
|
75 |
|
|
|
76 |
|
|
#define AOUTSZ 72
|
77 |
|
|
#define SMALL_AOUTSZ (28)
|
78 |
|
|
#define AOUTHDRSZ 72
|
79 |
|
|
|
80 |
|
|
/********************** SECTION HEADER **********************/
|
81 |
|
|
|
82 |
|
|
|
83 |
|
|
struct external_scnhdr {
|
84 |
|
|
char s_name[8]; /* section name */
|
85 |
|
|
char s_paddr[4]; /* physical address, aliased s_nlib */
|
86 |
|
|
char s_vaddr[4]; /* virtual address */
|
87 |
|
|
char s_size[4]; /* section size */
|
88 |
|
|
char s_scnptr[4]; /* file ptr to raw data for section */
|
89 |
|
|
char s_relptr[4]; /* file ptr to relocation */
|
90 |
|
|
char s_lnnoptr[4]; /* file ptr to line numbers */
|
91 |
|
|
char s_nreloc[2]; /* number of relocation entries */
|
92 |
|
|
char s_nlnno[2]; /* number of line number entries*/
|
93 |
|
|
char s_flags[4]; /* flags */
|
94 |
|
|
};
|
95 |
|
|
|
96 |
|
|
#define SCNHDR struct external_scnhdr
|
97 |
|
|
#define SCNHSZ 40
|
98 |
|
|
|
99 |
|
|
/********************** LINE NUMBERS **********************/
|
100 |
|
|
|
101 |
|
|
/* 1 line number entry for every "breakpointable" source line in a section.
|
102 |
|
|
* Line numbers are grouped on a per function basis; first entry in a function
|
103 |
|
|
* grouping will have l_lnno = 0 and in place of physical address will be the
|
104 |
|
|
* symbol table index of the function name.
|
105 |
|
|
*/
|
106 |
|
|
struct external_lineno {
|
107 |
|
|
union {
|
108 |
|
|
char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/
|
109 |
|
|
char l_paddr[4]; /* (physical) address of line number */
|
110 |
|
|
} l_addr;
|
111 |
|
|
char l_lnno[2]; /* line number */
|
112 |
|
|
};
|
113 |
|
|
|
114 |
|
|
|
115 |
|
|
#define LINENO struct external_lineno
|
116 |
|
|
#define LINESZ 6
|
117 |
|
|
|
118 |
|
|
|
119 |
|
|
/********************** SYMBOLS **********************/
|
120 |
|
|
|
121 |
|
|
#define E_SYMNMLEN 8 /* # characters in a symbol name */
|
122 |
|
|
#define E_FILNMLEN 14 /* # characters in a file name */
|
123 |
|
|
#define E_DIMNUM 4 /* # array dimensions in auxiliary entry */
|
124 |
|
|
|
125 |
|
|
struct external_syment
|
126 |
|
|
{
|
127 |
|
|
union {
|
128 |
|
|
char e_name[E_SYMNMLEN];
|
129 |
|
|
struct {
|
130 |
|
|
char e_zeroes[4];
|
131 |
|
|
char e_offset[4];
|
132 |
|
|
} e;
|
133 |
|
|
} e;
|
134 |
|
|
char e_value[4];
|
135 |
|
|
char e_scnum[2];
|
136 |
|
|
char e_type[2];
|
137 |
|
|
char e_sclass[1];
|
138 |
|
|
char e_numaux[1];
|
139 |
|
|
};
|
140 |
|
|
|
141 |
|
|
|
142 |
|
|
|
143 |
|
|
#define N_BTMASK (017)
|
144 |
|
|
#define N_TMASK (060)
|
145 |
|
|
#define N_BTSHFT (4)
|
146 |
|
|
#define N_TSHIFT (2)
|
147 |
|
|
|
148 |
|
|
|
149 |
|
|
union external_auxent {
|
150 |
|
|
struct {
|
151 |
|
|
char x_tagndx[4]; /* str, un, or enum tag indx */
|
152 |
|
|
union {
|
153 |
|
|
struct {
|
154 |
|
|
char x_lnno[2]; /* declaration line number */
|
155 |
|
|
char x_size[2]; /* str/union/array size */
|
156 |
|
|
} x_lnsz;
|
157 |
|
|
char x_fsize[4]; /* size of function */
|
158 |
|
|
} x_misc;
|
159 |
|
|
union {
|
160 |
|
|
struct { /* if ISFCN, tag, or .bb */
|
161 |
|
|
char x_lnnoptr[4]; /* ptr to fcn line # */
|
162 |
|
|
char x_endndx[4]; /* entry ndx past block end */
|
163 |
|
|
} x_fcn;
|
164 |
|
|
struct { /* if ISARY, up to 4 dimen. */
|
165 |
|
|
char x_dimen[E_DIMNUM][2];
|
166 |
|
|
} x_ary;
|
167 |
|
|
} x_fcnary;
|
168 |
|
|
char x_tvndx[2]; /* tv index */
|
169 |
|
|
} x_sym;
|
170 |
|
|
|
171 |
|
|
union {
|
172 |
|
|
char x_fname[E_FILNMLEN];
|
173 |
|
|
struct {
|
174 |
|
|
char x_zeroes[4];
|
175 |
|
|
char x_offset[4];
|
176 |
|
|
} x_n;
|
177 |
|
|
} x_file;
|
178 |
|
|
|
179 |
|
|
struct {
|
180 |
|
|
char x_scnlen[4]; /* section length */
|
181 |
|
|
char x_nreloc[2]; /* # relocation entries */
|
182 |
|
|
char x_nlinno[2]; /* # line numbers */
|
183 |
|
|
} x_scn;
|
184 |
|
|
|
185 |
|
|
struct {
|
186 |
|
|
char x_tvfill[4]; /* tv fill value */
|
187 |
|
|
char x_tvlen[2]; /* length of .tv */
|
188 |
|
|
char x_tvran[2][2]; /* tv range */
|
189 |
|
|
} x_tv; /* info about .tv section (in auxent of symbol .tv)) */
|
190 |
|
|
|
191 |
|
|
struct {
|
192 |
|
|
unsigned char x_scnlen[4];
|
193 |
|
|
unsigned char x_parmhash[4];
|
194 |
|
|
unsigned char x_snhash[2];
|
195 |
|
|
unsigned char x_smtyp[1];
|
196 |
|
|
unsigned char x_smclas[1];
|
197 |
|
|
unsigned char x_stab[4];
|
198 |
|
|
unsigned char x_snstab[2];
|
199 |
|
|
} x_csect;
|
200 |
|
|
|
201 |
|
|
};
|
202 |
|
|
|
203 |
|
|
#define SYMENT struct external_syment
|
204 |
|
|
#define SYMESZ 18
|
205 |
|
|
#define AUXENT union external_auxent
|
206 |
|
|
#define AUXESZ 18
|
207 |
|
|
#define DBXMASK 0x80 /* for dbx storage mask */
|
208 |
|
|
#define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK)
|
209 |
|
|
|
210 |
|
|
|
211 |
|
|
|
212 |
|
|
/********************** RELOCATION DIRECTIVES **********************/
|
213 |
|
|
|
214 |
|
|
|
215 |
|
|
struct external_reloc {
|
216 |
|
|
char r_vaddr[4];
|
217 |
|
|
char r_symndx[4];
|
218 |
|
|
char r_size[1];
|
219 |
|
|
char r_type[1];
|
220 |
|
|
};
|
221 |
|
|
|
222 |
|
|
|
223 |
|
|
#define RELOC struct external_reloc
|
224 |
|
|
#define RELSZ 10
|
225 |
|
|
|
226 |
|
|
#define DEFAULT_DATA_SECTION_ALIGNMENT 4
|
227 |
|
|
#define DEFAULT_BSS_SECTION_ALIGNMENT 4
|
228 |
|
|
#define DEFAULT_TEXT_SECTION_ALIGNMENT 4
|
229 |
|
|
/* For new sections we havn't heard of before */
|
230 |
|
|
#define DEFAULT_SECTION_ALIGNMENT 4
|
231 |
|
|
|
232 |
|
|
/* The ldhdr structure. This appears at the start of the .loader
|
233 |
|
|
section. */
|
234 |
|
|
|
235 |
|
|
struct external_ldhdr
|
236 |
|
|
{
|
237 |
|
|
bfd_byte l_version[4];
|
238 |
|
|
bfd_byte l_nsyms[4];
|
239 |
|
|
bfd_byte l_nreloc[4];
|
240 |
|
|
bfd_byte l_istlen[4];
|
241 |
|
|
bfd_byte l_nimpid[4];
|
242 |
|
|
bfd_byte l_impoff[4];
|
243 |
|
|
bfd_byte l_stlen[4];
|
244 |
|
|
bfd_byte l_stoff[4];
|
245 |
|
|
};
|
246 |
|
|
|
247 |
|
|
#define LDHDRSZ (8 * 4)
|
248 |
|
|
|
249 |
|
|
struct external_ldsym
|
250 |
|
|
{
|
251 |
|
|
union
|
252 |
|
|
{
|
253 |
|
|
bfd_byte _l_name[SYMNMLEN];
|
254 |
|
|
struct
|
255 |
|
|
{
|
256 |
|
|
bfd_byte _l_zeroes[4];
|
257 |
|
|
bfd_byte _l_offset[4];
|
258 |
|
|
} _l_l;
|
259 |
|
|
} _l;
|
260 |
|
|
bfd_byte l_value[4];
|
261 |
|
|
bfd_byte l_scnum[2];
|
262 |
|
|
bfd_byte l_smtype[1];
|
263 |
|
|
bfd_byte l_smclas[1];
|
264 |
|
|
bfd_byte l_ifile[4];
|
265 |
|
|
bfd_byte l_parm[4];
|
266 |
|
|
};
|
267 |
|
|
|
268 |
|
|
#define LDSYMSZ (8 + 3 * 4 + 2 + 2)
|
269 |
|
|
|
270 |
|
|
struct external_ldrel
|
271 |
|
|
{
|
272 |
|
|
bfd_byte l_vaddr[4];
|
273 |
|
|
bfd_byte l_symndx[4];
|
274 |
|
|
bfd_byte l_rtype[2];
|
275 |
|
|
bfd_byte l_rsecnm[2];
|
276 |
|
|
};
|
277 |
|
|
|
278 |
|
|
#define LDRELSZ (2 * 4 + 2 * 2)
|