Commit | Line | Data |
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252b5132 | 1 | /* ECOFF support on Alpha machines. |
4f1d9bd8 NC |
2 | coff/ecoff.h must be included before this file. |
3 | ||
4 | Copyright 2001 Free Software Foundation, Inc. | |
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 2 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 | |
e172dbf8 | 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
4f1d9bd8 | 19 | |
252b5132 RH |
20 | /********************** FILE HEADER **********************/ |
21 | ||
4f1d9bd8 NC |
22 | struct external_filehdr |
23 | { | |
252b5132 RH |
24 | unsigned char f_magic[2]; /* magic number */ |
25 | unsigned char f_nscns[2]; /* number of sections */ | |
26 | unsigned char f_timdat[4]; /* time & date stamp */ | |
27 | unsigned char f_symptr[8]; /* file pointer to symtab */ | |
28 | unsigned char f_nsyms[4]; /* number of symtab entries */ | |
29 | unsigned char f_opthdr[2]; /* sizeof(optional hdr) */ | |
30 | unsigned char f_flags[2]; /* flags */ | |
31 | }; | |
32 | ||
33 | /* Magic numbers are defined in coff/ecoff.h. */ | |
34 | #define ALPHA_ECOFF_BADMAG(x) \ | |
35 | ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD) | |
36 | ||
37 | /* The object type is encoded in the f_flags. */ | |
38 | #define F_ALPHA_OBJECT_TYPE_MASK 0x3000 | |
39 | #define F_ALPHA_NO_SHARED 0x1000 | |
40 | #define F_ALPHA_SHARABLE 0x2000 | |
41 | #define F_ALPHA_CALL_SHARED 0x3000 | |
42 | ||
43 | #define FILHDR struct external_filehdr | |
44 | #define FILHSZ 24 | |
45 | ||
46 | /********************** AOUT "OPTIONAL HEADER" **********************/ | |
47 | ||
252b5132 RH |
48 | typedef struct external_aouthdr |
49 | { | |
50 | unsigned char magic[2]; /* type of file */ | |
51 | unsigned char vstamp[2]; /* version stamp */ | |
52 | unsigned char bldrev[2]; /* ?? */ | |
53 | unsigned char padding[2]; /* pad to quadword boundary */ | |
54 | unsigned char tsize[8]; /* text size in bytes */ | |
55 | unsigned char dsize[8]; /* initialized data " " */ | |
56 | unsigned char bsize[8]; /* uninitialized data " " */ | |
57 | unsigned char entry[8]; /* entry pt. */ | |
58 | unsigned char text_start[8]; /* base of text used for this file */ | |
59 | unsigned char data_start[8]; /* base of data used for this file */ | |
60 | unsigned char bss_start[8]; /* base of bss used for this file */ | |
61 | unsigned char gprmask[4]; /* bitmask of general registers used */ | |
62 | unsigned char fprmask[4]; /* bitmask of floating point registers used */ | |
63 | unsigned char gp_value[8]; /* value for gp register */ | |
64 | } AOUTHDR; | |
65 | ||
66 | /* compute size of a header */ | |
67 | ||
68 | #define AOUTSZ 80 | |
69 | #define AOUTHDRSZ 80 | |
70 | ||
71 | /********************** SECTION HEADER **********************/ | |
72 | ||
4f1d9bd8 NC |
73 | struct external_scnhdr |
74 | { | |
252b5132 RH |
75 | unsigned char s_name[8]; /* section name */ |
76 | unsigned char s_paddr[8]; /* physical address, aliased s_nlib */ | |
77 | unsigned char s_vaddr[8]; /* virtual address */ | |
78 | unsigned char s_size[8]; /* section size */ | |
79 | unsigned char s_scnptr[8]; /* file ptr to raw data for section */ | |
80 | unsigned char s_relptr[8]; /* file ptr to relocation */ | |
81 | unsigned char s_lnnoptr[8]; /* file ptr to line numbers */ | |
82 | unsigned char s_nreloc[2]; /* number of relocation entries */ | |
83 | unsigned char s_nlnno[2]; /* number of line number entries*/ | |
84 | unsigned char s_flags[4]; /* flags */ | |
85 | }; | |
86 | ||
87 | #define SCNHDR struct external_scnhdr | |
88 | #define SCNHSZ 64 | |
89 | ||
90 | /********************** RELOCATION DIRECTIVES **********************/ | |
91 | ||
4f1d9bd8 NC |
92 | struct external_reloc |
93 | { | |
252b5132 RH |
94 | unsigned char r_vaddr[8]; |
95 | unsigned char r_symndx[4]; | |
96 | unsigned char r_bits[4]; | |
97 | }; | |
98 | ||
99 | #define RELOC struct external_reloc | |
100 | #define RELSZ 16 | |
101 | ||
102 | /* Constants to unpack the r_bits field. The Alpha seems to always be | |
103 | little endian, so I haven't bothered to define big endian variants | |
104 | of these. */ | |
105 | ||
106 | #define RELOC_BITS0_TYPE_LITTLE 0xff | |
107 | #define RELOC_BITS0_TYPE_SH_LITTLE 0 | |
108 | ||
109 | #define RELOC_BITS1_EXTERN_LITTLE 0x01 | |
110 | ||
111 | #define RELOC_BITS1_OFFSET_LITTLE 0x7e | |
112 | #define RELOC_BITS1_OFFSET_SH_LITTLE 1 | |
113 | ||
114 | #define RELOC_BITS1_RESERVED_LITTLE 0x80 | |
115 | #define RELOC_BITS1_RESERVED_SH_LITTLE 7 | |
116 | #define RELOC_BITS2_RESERVED_LITTLE 0xff | |
117 | #define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE 1 | |
118 | #define RELOC_BITS3_RESERVED_LITTLE 0x03 | |
119 | #define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE 9 | |
120 | ||
121 | #define RELOC_BITS3_SIZE_LITTLE 0xfc | |
122 | #define RELOC_BITS3_SIZE_SH_LITTLE 2 | |
123 | ||
124 | /* The r_type field in a reloc is one of the following values. */ | |
125 | #define ALPHA_R_IGNORE 0 | |
126 | #define ALPHA_R_REFLONG 1 | |
127 | #define ALPHA_R_REFQUAD 2 | |
128 | #define ALPHA_R_GPREL32 3 | |
129 | #define ALPHA_R_LITERAL 4 | |
130 | #define ALPHA_R_LITUSE 5 | |
131 | #define ALPHA_R_GPDISP 6 | |
132 | #define ALPHA_R_BRADDR 7 | |
133 | #define ALPHA_R_HINT 8 | |
134 | #define ALPHA_R_SREL16 9 | |
135 | #define ALPHA_R_SREL32 10 | |
136 | #define ALPHA_R_SREL64 11 | |
137 | #define ALPHA_R_OP_PUSH 12 | |
138 | #define ALPHA_R_OP_STORE 13 | |
139 | #define ALPHA_R_OP_PSUB 14 | |
140 | #define ALPHA_R_OP_PRSHIFT 15 | |
141 | #define ALPHA_R_GPVALUE 16 | |
142 | #define ALPHA_R_GPRELHIGH 17 | |
143 | #define ALPHA_R_GPRELLOW 18 | |
144 | #define ALPHA_R_IMMED 19 | |
145 | ||
146 | /* Overloaded reloc value used by Net- and OpenBSD. */ | |
147 | #define ALPHA_R_LITERALSLEAZY 17 | |
148 | ||
149 | /* With ALPHA_R_LITUSE, the r_size field is one of the following values. */ | |
150 | #define ALPHA_R_LU_BASE 1 | |
151 | #define ALPHA_R_LU_BYTOFF 2 | |
152 | #define ALPHA_R_LU_JSR 3 | |
153 | ||
154 | /* With ALPHA_R_IMMED, the r_size field is one of the following values. */ | |
155 | #define ALPHA_R_IMMED_GP_16 1 | |
156 | #define ALPHA_R_IMMED_GP_HI32 2 | |
157 | #define ALPHA_R_IMMED_SCN_HI32 3 | |
158 | #define ALPHA_R_IMMED_BR_HI32 4 | |
159 | #define ALPHA_R_IMMED_LO32 5 | |
160 | ||
161 | /********************** SYMBOLIC INFORMATION **********************/ | |
162 | ||
163 | /* Written by John Gilmore. */ | |
164 | ||
165 | /* ECOFF uses COFF-like section structures, but its own symbol format. | |
166 | This file defines the symbol format in fields whose size and alignment | |
167 | will not vary on different host systems. */ | |
168 | ||
169 | /* File header as a set of bytes */ | |
170 | ||
4f1d9bd8 NC |
171 | struct hdr_ext |
172 | { | |
252b5132 RH |
173 | unsigned char h_magic[2]; |
174 | unsigned char h_vstamp[2]; | |
175 | unsigned char h_ilineMax[4]; | |
176 | unsigned char h_idnMax[4]; | |
177 | unsigned char h_ipdMax[4]; | |
178 | unsigned char h_isymMax[4]; | |
179 | unsigned char h_ioptMax[4]; | |
180 | unsigned char h_iauxMax[4]; | |
181 | unsigned char h_issMax[4]; | |
182 | unsigned char h_issExtMax[4]; | |
183 | unsigned char h_ifdMax[4]; | |
184 | unsigned char h_crfd[4]; | |
185 | unsigned char h_iextMax[4]; | |
186 | unsigned char h_cbLine[8]; | |
187 | unsigned char h_cbLineOffset[8]; | |
188 | unsigned char h_cbDnOffset[8]; | |
189 | unsigned char h_cbPdOffset[8]; | |
190 | unsigned char h_cbSymOffset[8]; | |
191 | unsigned char h_cbOptOffset[8]; | |
192 | unsigned char h_cbAuxOffset[8]; | |
193 | unsigned char h_cbSsOffset[8]; | |
194 | unsigned char h_cbSsExtOffset[8]; | |
195 | unsigned char h_cbFdOffset[8]; | |
196 | unsigned char h_cbRfdOffset[8]; | |
197 | unsigned char h_cbExtOffset[8]; | |
198 | }; | |
199 | ||
200 | /* File descriptor external record */ | |
201 | ||
4f1d9bd8 NC |
202 | struct fdr_ext |
203 | { | |
252b5132 RH |
204 | unsigned char f_adr[8]; |
205 | unsigned char f_cbLineOffset[8]; | |
206 | unsigned char f_cbLine[8]; | |
207 | unsigned char f_cbSs[8]; | |
208 | unsigned char f_rss[4]; | |
209 | unsigned char f_issBase[4]; | |
210 | unsigned char f_isymBase[4]; | |
211 | unsigned char f_csym[4]; | |
212 | unsigned char f_ilineBase[4]; | |
213 | unsigned char f_cline[4]; | |
214 | unsigned char f_ioptBase[4]; | |
215 | unsigned char f_copt[4]; | |
216 | unsigned char f_ipdFirst[4]; | |
217 | unsigned char f_cpd[4]; | |
218 | unsigned char f_iauxBase[4]; | |
219 | unsigned char f_caux[4]; | |
220 | unsigned char f_rfdBase[4]; | |
221 | unsigned char f_crfd[4]; | |
222 | unsigned char f_bits1[1]; | |
223 | unsigned char f_bits2[3]; | |
224 | unsigned char f_padding[4]; | |
225 | }; | |
226 | ||
227 | #define FDR_BITS1_LANG_BIG 0xF8 | |
228 | #define FDR_BITS1_LANG_SH_BIG 3 | |
229 | #define FDR_BITS1_LANG_LITTLE 0x1F | |
230 | #define FDR_BITS1_LANG_SH_LITTLE 0 | |
231 | ||
232 | #define FDR_BITS1_FMERGE_BIG 0x04 | |
233 | #define FDR_BITS1_FMERGE_LITTLE 0x20 | |
234 | ||
235 | #define FDR_BITS1_FREADIN_BIG 0x02 | |
236 | #define FDR_BITS1_FREADIN_LITTLE 0x40 | |
237 | ||
238 | #define FDR_BITS1_FBIGENDIAN_BIG 0x01 | |
239 | #define FDR_BITS1_FBIGENDIAN_LITTLE 0x80 | |
240 | ||
241 | #define FDR_BITS2_GLEVEL_BIG 0xC0 | |
242 | #define FDR_BITS2_GLEVEL_SH_BIG 6 | |
243 | #define FDR_BITS2_GLEVEL_LITTLE 0x03 | |
244 | #define FDR_BITS2_GLEVEL_SH_LITTLE 0 | |
245 | ||
246 | /* We ignore the `reserved' field in bits2. */ | |
247 | ||
248 | /* Procedure descriptor external record */ | |
249 | ||
250 | struct pdr_ext { | |
251 | unsigned char p_adr[8]; | |
252 | unsigned char p_cbLineOffset[8]; | |
253 | unsigned char p_isym[4]; | |
254 | unsigned char p_iline[4]; | |
255 | unsigned char p_regmask[4]; | |
256 | unsigned char p_regoffset[4]; | |
257 | unsigned char p_iopt[4]; | |
258 | unsigned char p_fregmask[4]; | |
259 | unsigned char p_fregoffset[4]; | |
260 | unsigned char p_frameoffset[4]; | |
261 | unsigned char p_lnLow[4]; | |
262 | unsigned char p_lnHigh[4]; | |
263 | unsigned char p_gp_prologue[1]; | |
264 | unsigned char p_bits1[1]; | |
265 | unsigned char p_bits2[1]; | |
266 | unsigned char p_localoff[1]; | |
267 | unsigned char p_framereg[2]; | |
268 | unsigned char p_pcreg[2]; | |
269 | }; | |
270 | ||
271 | #define PDR_BITS1_GP_USED_BIG 0x80 | |
272 | #define PDR_BITS1_REG_FRAME_BIG 0x40 | |
273 | #define PDR_BITS1_PROF_BIG 0x20 | |
274 | #define PDR_BITS1_RESERVED_BIG 0x1f | |
275 | #define PDR_BITS1_RESERVED_SH_LEFT_BIG 8 | |
276 | #define PDR_BITS2_RESERVED_BIG 0xff | |
277 | #define PDR_BITS2_RESERVED_SH_BIG 0 | |
278 | ||
279 | #define PDR_BITS1_GP_USED_LITTLE 0x01 | |
280 | #define PDR_BITS1_REG_FRAME_LITTLE 0x02 | |
281 | #define PDR_BITS1_PROF_LITTLE 0x04 | |
282 | #define PDR_BITS1_RESERVED_LITTLE 0xf8 | |
283 | #define PDR_BITS1_RESERVED_SH_LITTLE 3 | |
284 | #define PDR_BITS2_RESERVED_LITTLE 0xff | |
285 | #define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5 | |
286 | ||
287 | /* Line numbers */ | |
288 | ||
289 | struct line_ext { | |
290 | unsigned char l_line[4]; | |
291 | }; | |
292 | ||
293 | /* Symbol external record */ | |
294 | ||
295 | struct sym_ext { | |
296 | unsigned char s_value[8]; | |
297 | unsigned char s_iss[4]; | |
298 | unsigned char s_bits1[1]; | |
299 | unsigned char s_bits2[1]; | |
300 | unsigned char s_bits3[1]; | |
301 | unsigned char s_bits4[1]; | |
302 | }; | |
303 | ||
304 | #define SYM_BITS1_ST_BIG 0xFC | |
305 | #define SYM_BITS1_ST_SH_BIG 2 | |
306 | #define SYM_BITS1_ST_LITTLE 0x3F | |
307 | #define SYM_BITS1_ST_SH_LITTLE 0 | |
308 | ||
309 | #define SYM_BITS1_SC_BIG 0x03 | |
310 | #define SYM_BITS1_SC_SH_LEFT_BIG 3 | |
311 | #define SYM_BITS1_SC_LITTLE 0xC0 | |
312 | #define SYM_BITS1_SC_SH_LITTLE 6 | |
313 | ||
314 | #define SYM_BITS2_SC_BIG 0xE0 | |
315 | #define SYM_BITS2_SC_SH_BIG 5 | |
316 | #define SYM_BITS2_SC_LITTLE 0x07 | |
317 | #define SYM_BITS2_SC_SH_LEFT_LITTLE 2 | |
318 | ||
319 | #define SYM_BITS2_RESERVED_BIG 0x10 | |
320 | #define SYM_BITS2_RESERVED_LITTLE 0x08 | |
321 | ||
322 | #define SYM_BITS2_INDEX_BIG 0x0F | |
323 | #define SYM_BITS2_INDEX_SH_LEFT_BIG 16 | |
324 | #define SYM_BITS2_INDEX_LITTLE 0xF0 | |
325 | #define SYM_BITS2_INDEX_SH_LITTLE 4 | |
326 | ||
327 | #define SYM_BITS3_INDEX_SH_LEFT_BIG 8 | |
328 | #define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4 | |
329 | ||
330 | #define SYM_BITS4_INDEX_SH_LEFT_BIG 0 | |
331 | #define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12 | |
332 | ||
333 | /* External symbol external record */ | |
334 | ||
335 | struct ext_ext { | |
336 | struct sym_ext es_asym; | |
337 | unsigned char es_bits1[1]; | |
338 | unsigned char es_bits2[3]; | |
339 | unsigned char es_ifd[4]; | |
340 | }; | |
341 | ||
342 | #define EXT_BITS1_JMPTBL_BIG 0x80 | |
343 | #define EXT_BITS1_JMPTBL_LITTLE 0x01 | |
344 | ||
345 | #define EXT_BITS1_COBOL_MAIN_BIG 0x40 | |
346 | #define EXT_BITS1_COBOL_MAIN_LITTLE 0x02 | |
347 | ||
348 | #define EXT_BITS1_WEAKEXT_BIG 0x20 | |
349 | #define EXT_BITS1_WEAKEXT_LITTLE 0x04 | |
350 | ||
351 | /* Dense numbers external record */ | |
352 | ||
353 | struct dnr_ext { | |
354 | unsigned char d_rfd[4]; | |
355 | unsigned char d_index[4]; | |
356 | }; | |
357 | ||
358 | /* Relative file descriptor */ | |
359 | ||
360 | struct rfd_ext { | |
361 | unsigned char rfd[4]; | |
362 | }; | |
363 | ||
364 | /* Optimizer symbol external record */ | |
365 | ||
366 | struct opt_ext { | |
367 | unsigned char o_bits1[1]; | |
368 | unsigned char o_bits2[1]; | |
369 | unsigned char o_bits3[1]; | |
370 | unsigned char o_bits4[1]; | |
371 | struct rndx_ext o_rndx; | |
372 | unsigned char o_offset[4]; | |
373 | }; | |
374 | ||
375 | #define OPT_BITS2_VALUE_SH_LEFT_BIG 16 | |
376 | #define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0 | |
377 | ||
378 | #define OPT_BITS3_VALUE_SH_LEFT_BIG 8 | |
379 | #define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8 | |
380 | ||
381 | #define OPT_BITS4_VALUE_SH_LEFT_BIG 0 | |
382 | #define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16 |