Commit | Line | Data |
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252b5132 | 1 | /* IBM RS/6000 "XCOFF" file definitions for BFD. |
c3aa17e9 | 2 | Copyright (C) 1990, 1991, 2001 Free Software Foundation, Inc. |
2ce18a16 | 3 | Written by Mimi Phuong-Thao Vo of IBM |
252b5132 RH |
4 | and John Gilmore of Cygnus Support. */ |
5 | ||
3dd657b1 TR |
6 | /********************** FILE HEADER **********************/ |
7 | ||
8 | struct external_filehdr { | |
9 | char f_magic[2]; /* magic number */ | |
10 | char f_nscns[2]; /* number of sections */ | |
11 | char f_timdat[4]; /* time & date stamp */ | |
12 | char f_symptr[4]; /* file pointer to symtab */ | |
13 | char f_nsyms[4]; /* number of symtab entries */ | |
14 | char f_opthdr[2]; /* sizeof(optional hdr) */ | |
15 | char f_flags[2]; /* flags */ | |
16 | }; | |
252b5132 RH |
17 | |
18 | /* IBM RS/6000 */ | |
19 | #define U802WRMAGIC 0730 /* writeable text segments **chh** */ | |
20 | #define U802ROMAGIC 0735 /* readonly sharable text segments */ | |
21 | #define U802TOCMAGIC 0737 /* readonly text segments and TOC */ | |
22 | ||
23 | #define BADMAG(x) \ | |
24 | ((x).f_magic != U802ROMAGIC && (x).f_magic != U802WRMAGIC && \ | |
25 | (x).f_magic != U802TOCMAGIC) | |
26 | ||
3dd657b1 TR |
27 | #define FILHDR struct external_filehdr |
28 | #define FILHSZ 20 | |
29 | ||
30 | ||
252b5132 RH |
31 | /********************** AOUT "OPTIONAL HEADER" **********************/ |
32 | ||
3dd657b1 | 33 | |
252b5132 RH |
34 | typedef struct |
35 | { | |
36 | unsigned char magic[2]; /* type of file */ | |
37 | unsigned char vstamp[2]; /* version stamp */ | |
38 | unsigned char tsize[4]; /* text size in bytes, padded to FW bdry */ | |
39 | unsigned char dsize[4]; /* initialized data " " */ | |
40 | unsigned char bsize[4]; /* uninitialized data " " */ | |
41 | unsigned char entry[4]; /* entry pt. */ | |
42 | unsigned char text_start[4]; /* base of text used for this file */ | |
43 | unsigned char data_start[4]; /* base of data used for this file */ | |
44 | unsigned char o_toc[4]; /* address of TOC */ | |
45 | unsigned char o_snentry[2]; /* section number of entry point */ | |
46 | unsigned char o_sntext[2]; /* section number of .text section */ | |
47 | unsigned char o_sndata[2]; /* section number of .data section */ | |
48 | unsigned char o_sntoc[2]; /* section number of TOC */ | |
49 | unsigned char o_snloader[2]; /* section number of .loader section */ | |
50 | unsigned char o_snbss[2]; /* section number of .bss section */ | |
51 | unsigned char o_algntext[2]; /* .text alignment */ | |
52 | unsigned char o_algndata[2]; /* .data alignment */ | |
53 | unsigned char o_modtype[2]; /* module type (??) */ | |
54 | unsigned char o_cputype[2]; /* cpu type */ | |
55 | unsigned char o_maxstack[4]; /* max stack size (??) */ | |
56 | unsigned char o_maxdata[4]; /* max data size (??) */ | |
57 | unsigned char o_resv2[12]; /* reserved */ | |
58 | } | |
59 | AOUTHDR; | |
60 | ||
61 | #define AOUTSZ 72 | |
62 | #define SMALL_AOUTSZ (28) | |
63 | #define AOUTHDRSZ 72 | |
64 | ||
3dd657b1 | 65 | /********************** SECTION HEADER **********************/ |
252b5132 | 66 | |
252b5132 | 67 | |
3dd657b1 TR |
68 | struct external_scnhdr { |
69 | char s_name[8]; /* section name */ | |
70 | char s_paddr[4]; /* physical address, aliased s_nlib */ | |
71 | char s_vaddr[4]; /* virtual address */ | |
72 | char s_size[4]; /* section size */ | |
73 | char s_scnptr[4]; /* file ptr to raw data for section */ | |
74 | char s_relptr[4]; /* file ptr to relocation */ | |
75 | char s_lnnoptr[4]; /* file ptr to line numbers */ | |
76 | char s_nreloc[2]; /* number of relocation entries */ | |
77 | char s_nlnno[2]; /* number of line number entries*/ | |
78 | char s_flags[4]; /* flags */ | |
79 | }; | |
252b5132 | 80 | |
3dd657b1 TR |
81 | #define SCNHDR struct external_scnhdr |
82 | #define SCNHSZ 40 | |
83 | ||
84 | /********************** LINE NUMBERS **********************/ | |
85 | ||
86 | /* 1 line number entry for every "breakpointable" source line in a section. | |
87 | * Line numbers are grouped on a per function basis; first entry in a function | |
88 | * grouping will have l_lnno = 0 and in place of physical address will be the | |
89 | * symbol table index of the function name. | |
90 | */ | |
91 | struct external_lineno { | |
92 | union { | |
93 | char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ | |
94 | char l_paddr[4]; /* (physical) address of line number */ | |
95 | } l_addr; | |
96 | char l_lnno[2]; /* line number */ | |
97 | }; | |
4f1d9bd8 | 98 | |
4f1d9bd8 | 99 | |
3dd657b1 TR |
100 | #define LINENO struct external_lineno |
101 | #define LINESZ 6 | |
4f1d9bd8 | 102 | |
4f1d9bd8 | 103 | |
3dd657b1 | 104 | /********************** SYMBOLS **********************/ |
4f1d9bd8 | 105 | |
3dd657b1 TR |
106 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ |
107 | #define E_FILNMLEN 14 /* # characters in a file name */ | |
108 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ | |
4f1d9bd8 | 109 | |
3dd657b1 TR |
110 | struct external_syment |
111 | { | |
112 | union { | |
113 | char e_name[E_SYMNMLEN]; | |
114 | struct { | |
115 | char e_zeroes[4]; | |
116 | char e_offset[4]; | |
117 | } e; | |
118 | } e; | |
119 | char e_value[4]; | |
120 | char e_scnum[2]; | |
121 | char e_type[2]; | |
122 | char e_sclass[1]; | |
123 | char e_numaux[1]; | |
124 | }; | |
4f1d9bd8 | 125 | |
4f1d9bd8 | 126 | |
4f1d9bd8 | 127 | |
3dd657b1 TR |
128 | #define N_BTMASK (017) |
129 | #define N_TMASK (060) | |
130 | #define N_BTSHFT (4) | |
131 | #define N_TSHIFT (2) | |
132 | ||
133 | ||
134 | union external_auxent { | |
135 | struct { | |
136 | char x_tagndx[4]; /* str, un, or enum tag indx */ | |
137 | union { | |
138 | struct { | |
139 | char x_lnno[2]; /* declaration line number */ | |
140 | char x_size[2]; /* str/union/array size */ | |
141 | } x_lnsz; | |
142 | char x_fsize[4]; /* size of function */ | |
143 | } x_misc; | |
144 | union { | |
145 | struct { /* if ISFCN, tag, or .bb */ | |
146 | char x_lnnoptr[4]; /* ptr to fcn line # */ | |
147 | char x_endndx[4]; /* entry ndx past block end */ | |
148 | } x_fcn; | |
149 | struct { /* if ISARY, up to 4 dimen. */ | |
150 | char x_dimen[E_DIMNUM][2]; | |
151 | } x_ary; | |
152 | } x_fcnary; | |
153 | char x_tvndx[2]; /* tv index */ | |
154 | } x_sym; | |
155 | ||
156 | union { | |
157 | char x_fname[E_FILNMLEN]; | |
158 | struct { | |
159 | char x_zeroes[4]; | |
160 | char x_offset[4]; | |
161 | } x_n; | |
162 | } x_file; | |
163 | ||
164 | struct { | |
165 | char x_scnlen[4]; /* section length */ | |
166 | char x_nreloc[2]; /* # relocation entries */ | |
167 | char x_nlinno[2]; /* # line numbers */ | |
168 | } x_scn; | |
169 | ||
170 | struct { | |
171 | char x_tvfill[4]; /* tv fill value */ | |
172 | char x_tvlen[2]; /* length of .tv */ | |
173 | char x_tvran[2][2]; /* tv range */ | |
174 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ | |
175 | ||
176 | struct { | |
177 | unsigned char x_scnlen[4]; | |
178 | unsigned char x_parmhash[4]; | |
179 | unsigned char x_snhash[2]; | |
180 | unsigned char x_smtyp[1]; | |
181 | unsigned char x_smclas[1]; | |
182 | unsigned char x_stab[4]; | |
183 | unsigned char x_snstab[2]; | |
184 | } x_csect; | |
4f1d9bd8 | 185 | |
252b5132 RH |
186 | }; |
187 | ||
3dd657b1 TR |
188 | #define SYMENT struct external_syment |
189 | #define SYMESZ 18 | |
252b5132 RH |
190 | #define AUXENT union external_auxent |
191 | #define AUXESZ 18 | |
192 | #define DBXMASK 0x80 /* for dbx storage mask */ | |
193 | #define SYMNAME_IN_DEBUG(symptr) ((symptr)->n_sclass & DBXMASK) | |
194 | ||
3dd657b1 TR |
195 | |
196 | ||
252b5132 RH |
197 | /********************** RELOCATION DIRECTIVES **********************/ |
198 | ||
3dd657b1 TR |
199 | |
200 | struct external_reloc { | |
252b5132 RH |
201 | char r_vaddr[4]; |
202 | char r_symndx[4]; | |
203 | char r_size[1]; | |
204 | char r_type[1]; | |
205 | }; | |
206 | ||
3dd657b1 | 207 | |
252b5132 RH |
208 | #define RELOC struct external_reloc |
209 | #define RELSZ 10 | |
210 | ||
211 | #define DEFAULT_DATA_SECTION_ALIGNMENT 4 | |
212 | #define DEFAULT_BSS_SECTION_ALIGNMENT 4 | |
213 | #define DEFAULT_TEXT_SECTION_ALIGNMENT 4 | |
214 | /* For new sections we havn't heard of before */ | |
215 | #define DEFAULT_SECTION_ALIGNMENT 4 | |
3dd657b1 TR |
216 | |
217 | /* The ldhdr structure. This appears at the start of the .loader | |
218 | section. */ | |
219 | ||
220 | struct external_ldhdr | |
221 | { | |
222 | bfd_byte l_version[4]; | |
223 | bfd_byte l_nsyms[4]; | |
224 | bfd_byte l_nreloc[4]; | |
225 | bfd_byte l_istlen[4]; | |
226 | bfd_byte l_nimpid[4]; | |
227 | bfd_byte l_impoff[4]; | |
228 | bfd_byte l_stlen[4]; | |
229 | bfd_byte l_stoff[4]; | |
230 | }; | |
231 | ||
232 | #define LDHDRSZ (8 * 4) | |
233 | ||
234 | struct external_ldsym | |
235 | { | |
236 | union | |
237 | { | |
238 | bfd_byte _l_name[SYMNMLEN]; | |
239 | struct | |
240 | { | |
241 | bfd_byte _l_zeroes[4]; | |
242 | bfd_byte _l_offset[4]; | |
243 | } _l_l; | |
244 | } _l; | |
245 | bfd_byte l_value[4]; | |
246 | bfd_byte l_scnum[2]; | |
247 | bfd_byte l_smtype[1]; | |
248 | bfd_byte l_smclas[1]; | |
249 | bfd_byte l_ifile[4]; | |
250 | bfd_byte l_parm[4]; | |
251 | }; | |
252 | ||
253 | #define LDSYMSZ (8 + 3 * 4 + 2 + 2) | |
254 | ||
255 | struct external_ldrel | |
256 | { | |
257 | bfd_byte l_vaddr[4]; | |
258 | bfd_byte l_symndx[4]; | |
259 | bfd_byte l_rtype[2]; | |
260 | bfd_byte l_rsecnm[2]; | |
261 | }; | |
262 | ||
263 | #define LDRELSZ (2 * 4 + 2 * 2) |