1 /* ECOFF support on Alpha machines.
2 coff/ecoff.h must be included before this file.
4 Copyright 2001, 2005, 2010 Free Software Foundation, Inc.
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.
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.
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. */
21 /********************** FILE HEADER **********************/
23 struct external_filehdr
25 unsigned char f_magic
[2]; /* magic number */
26 unsigned char f_nscns
[2]; /* number of sections */
27 unsigned char f_timdat
[4]; /* time & date stamp */
28 unsigned char f_symptr
[8]; /* file pointer to symtab */
29 unsigned char f_nsyms
[4]; /* number of symtab entries */
30 unsigned char f_opthdr
[2]; /* sizeof(optional hdr) */
31 unsigned char f_flags
[2]; /* flags */
34 /* Magic numbers are defined in coff/ecoff.h. */
35 #define ALPHA_ECOFF_BADMAG(x) \
36 ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD)
38 #define ALPHA_ECOFF_COMPRESSEDMAG(x) \
39 ((x).f_magic == ALPHA_MAGIC_COMPRESSED)
41 /* The object type is encoded in the f_flags. */
42 #define F_ALPHA_OBJECT_TYPE_MASK 0x3000
43 #define F_ALPHA_NO_SHARED 0x1000
44 #define F_ALPHA_SHARABLE 0x2000
45 #define F_ALPHA_CALL_SHARED 0x3000
47 #define FILHDR struct external_filehdr
50 /********************** AOUT "OPTIONAL HEADER" **********************/
52 typedef struct external_aouthdr
54 unsigned char magic
[2]; /* type of file */
55 unsigned char vstamp
[2]; /* version stamp */
56 unsigned char bldrev
[2]; /* ?? */
57 unsigned char padding
[2]; /* pad to quadword boundary */
58 unsigned char tsize
[8]; /* text size in bytes */
59 unsigned char dsize
[8]; /* initialized data " " */
60 unsigned char bsize
[8]; /* uninitialized data " " */
61 unsigned char entry
[8]; /* entry pt. */
62 unsigned char text_start
[8]; /* base of text used for this file */
63 unsigned char data_start
[8]; /* base of data used for this file */
64 unsigned char bss_start
[8]; /* base of bss used for this file */
65 unsigned char gprmask
[4]; /* bitmask of general registers used */
66 unsigned char fprmask
[4]; /* bitmask of floating point registers used */
67 unsigned char gp_value
[8]; /* value for gp register */
70 /* compute size of a header */
75 /********************** SECTION HEADER **********************/
77 struct external_scnhdr
79 unsigned char s_name
[8]; /* section name */
80 unsigned char s_paddr
[8]; /* physical address, aliased s_nlib */
81 unsigned char s_vaddr
[8]; /* virtual address */
82 unsigned char s_size
[8]; /* section size */
83 unsigned char s_scnptr
[8]; /* file ptr to raw data for section */
84 unsigned char s_relptr
[8]; /* file ptr to relocation */
85 unsigned char s_lnnoptr
[8]; /* file ptr to line numbers */
86 unsigned char s_nreloc
[2]; /* number of relocation entries */
87 unsigned char s_nlnno
[2]; /* number of line number entries*/
88 unsigned char s_flags
[4]; /* flags */
91 #define SCNHDR struct external_scnhdr
94 /********************** RELOCATION DIRECTIVES **********************/
98 unsigned char r_vaddr
[8];
99 unsigned char r_symndx
[4];
100 unsigned char r_bits
[4];
103 #define RELOC struct external_reloc
106 /* Constants to unpack the r_bits field. The Alpha seems to always be
107 little endian, so I haven't bothered to define big endian variants
110 #define RELOC_BITS0_TYPE_LITTLE 0xff
111 #define RELOC_BITS0_TYPE_SH_LITTLE 0
113 #define RELOC_BITS1_EXTERN_LITTLE 0x01
115 #define RELOC_BITS1_OFFSET_LITTLE 0x7e
116 #define RELOC_BITS1_OFFSET_SH_LITTLE 1
118 #define RELOC_BITS1_RESERVED_LITTLE 0x80
119 #define RELOC_BITS1_RESERVED_SH_LITTLE 7
120 #define RELOC_BITS2_RESERVED_LITTLE 0xff
121 #define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE 1
122 #define RELOC_BITS3_RESERVED_LITTLE 0x03
123 #define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE 9
125 #define RELOC_BITS3_SIZE_LITTLE 0xfc
126 #define RELOC_BITS3_SIZE_SH_LITTLE 2
128 /* The r_type field in a reloc is one of the following values. */
129 #define ALPHA_R_IGNORE 0
130 #define ALPHA_R_REFLONG 1
131 #define ALPHA_R_REFQUAD 2
132 #define ALPHA_R_GPREL32 3
133 #define ALPHA_R_LITERAL 4
134 #define ALPHA_R_LITUSE 5
135 #define ALPHA_R_GPDISP 6
136 #define ALPHA_R_BRADDR 7
137 #define ALPHA_R_HINT 8
138 #define ALPHA_R_SREL16 9
139 #define ALPHA_R_SREL32 10
140 #define ALPHA_R_SREL64 11
141 #define ALPHA_R_OP_PUSH 12
142 #define ALPHA_R_OP_STORE 13
143 #define ALPHA_R_OP_PSUB 14
144 #define ALPHA_R_OP_PRSHIFT 15
145 #define ALPHA_R_GPVALUE 16
146 #define ALPHA_R_GPRELHIGH 17
147 #define ALPHA_R_GPRELLOW 18
148 #define ALPHA_R_IMMED 19
150 /* Overloaded reloc value used by Net- and OpenBSD. */
151 #define ALPHA_R_LITERALSLEAZY 17
153 /* With ALPHA_R_LITUSE, the r_size field is one of the following values. */
154 #define ALPHA_R_LU_BASE 1
155 #define ALPHA_R_LU_BYTOFF 2
156 #define ALPHA_R_LU_JSR 3
158 /* With ALPHA_R_IMMED, the r_size field is one of the following values. */
159 #define ALPHA_R_IMMED_GP_16 1
160 #define ALPHA_R_IMMED_GP_HI32 2
161 #define ALPHA_R_IMMED_SCN_HI32 3
162 #define ALPHA_R_IMMED_BR_HI32 4
163 #define ALPHA_R_IMMED_LO32 5
165 /********************** SYMBOLIC INFORMATION **********************/
167 /* Written by John Gilmore. */
169 /* ECOFF uses COFF-like section structures, but its own symbol format.
170 This file defines the symbol format in fields whose size and alignment
171 will not vary on different host systems. */
173 /* File header as a set of bytes */
177 unsigned char h_magic
[2];
178 unsigned char h_vstamp
[2];
179 unsigned char h_ilineMax
[4];
180 unsigned char h_idnMax
[4];
181 unsigned char h_ipdMax
[4];
182 unsigned char h_isymMax
[4];
183 unsigned char h_ioptMax
[4];
184 unsigned char h_iauxMax
[4];
185 unsigned char h_issMax
[4];
186 unsigned char h_issExtMax
[4];
187 unsigned char h_ifdMax
[4];
188 unsigned char h_crfd
[4];
189 unsigned char h_iextMax
[4];
190 unsigned char h_cbLine
[8];
191 unsigned char h_cbLineOffset
[8];
192 unsigned char h_cbDnOffset
[8];
193 unsigned char h_cbPdOffset
[8];
194 unsigned char h_cbSymOffset
[8];
195 unsigned char h_cbOptOffset
[8];
196 unsigned char h_cbAuxOffset
[8];
197 unsigned char h_cbSsOffset
[8];
198 unsigned char h_cbSsExtOffset
[8];
199 unsigned char h_cbFdOffset
[8];
200 unsigned char h_cbRfdOffset
[8];
201 unsigned char h_cbExtOffset
[8];
204 /* File descriptor external record */
208 unsigned char f_adr
[8];
209 unsigned char f_cbLineOffset
[8];
210 unsigned char f_cbLine
[8];
211 unsigned char f_cbSs
[8];
212 unsigned char f_rss
[4];
213 unsigned char f_issBase
[4];
214 unsigned char f_isymBase
[4];
215 unsigned char f_csym
[4];
216 unsigned char f_ilineBase
[4];
217 unsigned char f_cline
[4];
218 unsigned char f_ioptBase
[4];
219 unsigned char f_copt
[4];
220 unsigned char f_ipdFirst
[4];
221 unsigned char f_cpd
[4];
222 unsigned char f_iauxBase
[4];
223 unsigned char f_caux
[4];
224 unsigned char f_rfdBase
[4];
225 unsigned char f_crfd
[4];
226 unsigned char f_bits1
[1];
227 unsigned char f_bits2
[3];
228 unsigned char f_padding
[4];
231 #define FDR_BITS1_LANG_BIG 0xF8
232 #define FDR_BITS1_LANG_SH_BIG 3
233 #define FDR_BITS1_LANG_LITTLE 0x1F
234 #define FDR_BITS1_LANG_SH_LITTLE 0
236 #define FDR_BITS1_FMERGE_BIG 0x04
237 #define FDR_BITS1_FMERGE_LITTLE 0x20
239 #define FDR_BITS1_FREADIN_BIG 0x02
240 #define FDR_BITS1_FREADIN_LITTLE 0x40
242 #define FDR_BITS1_FBIGENDIAN_BIG 0x01
243 #define FDR_BITS1_FBIGENDIAN_LITTLE 0x80
245 #define FDR_BITS2_GLEVEL_BIG 0xC0
246 #define FDR_BITS2_GLEVEL_SH_BIG 6
247 #define FDR_BITS2_GLEVEL_LITTLE 0x03
248 #define FDR_BITS2_GLEVEL_SH_LITTLE 0
250 /* We ignore the `reserved' field in bits2. */
252 /* Procedure descriptor external record */
255 unsigned char p_adr
[8];
256 unsigned char p_cbLineOffset
[8];
257 unsigned char p_isym
[4];
258 unsigned char p_iline
[4];
259 unsigned char p_regmask
[4];
260 unsigned char p_regoffset
[4];
261 unsigned char p_iopt
[4];
262 unsigned char p_fregmask
[4];
263 unsigned char p_fregoffset
[4];
264 unsigned char p_frameoffset
[4];
265 unsigned char p_lnLow
[4];
266 unsigned char p_lnHigh
[4];
267 unsigned char p_gp_prologue
[1];
268 unsigned char p_bits1
[1];
269 unsigned char p_bits2
[1];
270 unsigned char p_localoff
[1];
271 unsigned char p_framereg
[2];
272 unsigned char p_pcreg
[2];
275 #define PDR_BITS1_GP_USED_BIG 0x80
276 #define PDR_BITS1_REG_FRAME_BIG 0x40
277 #define PDR_BITS1_PROF_BIG 0x20
278 #define PDR_BITS1_RESERVED_BIG 0x1f
279 #define PDR_BITS1_RESERVED_SH_LEFT_BIG 8
280 #define PDR_BITS2_RESERVED_BIG 0xff
281 #define PDR_BITS2_RESERVED_SH_BIG 0
283 #define PDR_BITS1_GP_USED_LITTLE 0x01
284 #define PDR_BITS1_REG_FRAME_LITTLE 0x02
285 #define PDR_BITS1_PROF_LITTLE 0x04
286 #define PDR_BITS1_RESERVED_LITTLE 0xf8
287 #define PDR_BITS1_RESERVED_SH_LITTLE 3
288 #define PDR_BITS2_RESERVED_LITTLE 0xff
289 #define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5
294 unsigned char l_line
[4];
297 /* Symbol external record */
300 unsigned char s_value
[8];
301 unsigned char s_iss
[4];
302 unsigned char s_bits1
[1];
303 unsigned char s_bits2
[1];
304 unsigned char s_bits3
[1];
305 unsigned char s_bits4
[1];
308 #define SYM_BITS1_ST_BIG 0xFC
309 #define SYM_BITS1_ST_SH_BIG 2
310 #define SYM_BITS1_ST_LITTLE 0x3F
311 #define SYM_BITS1_ST_SH_LITTLE 0
313 #define SYM_BITS1_SC_BIG 0x03
314 #define SYM_BITS1_SC_SH_LEFT_BIG 3
315 #define SYM_BITS1_SC_LITTLE 0xC0
316 #define SYM_BITS1_SC_SH_LITTLE 6
318 #define SYM_BITS2_SC_BIG 0xE0
319 #define SYM_BITS2_SC_SH_BIG 5
320 #define SYM_BITS2_SC_LITTLE 0x07
321 #define SYM_BITS2_SC_SH_LEFT_LITTLE 2
323 #define SYM_BITS2_RESERVED_BIG 0x10
324 #define SYM_BITS2_RESERVED_LITTLE 0x08
326 #define SYM_BITS2_INDEX_BIG 0x0F
327 #define SYM_BITS2_INDEX_SH_LEFT_BIG 16
328 #define SYM_BITS2_INDEX_LITTLE 0xF0
329 #define SYM_BITS2_INDEX_SH_LITTLE 4
331 #define SYM_BITS3_INDEX_SH_LEFT_BIG 8
332 #define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4
334 #define SYM_BITS4_INDEX_SH_LEFT_BIG 0
335 #define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12
337 /* External symbol external record */
340 struct sym_ext es_asym
;
341 unsigned char es_bits1
[1];
342 unsigned char es_bits2
[3];
343 unsigned char es_ifd
[4];
346 #define EXT_BITS1_JMPTBL_BIG 0x80
347 #define EXT_BITS1_JMPTBL_LITTLE 0x01
349 #define EXT_BITS1_COBOL_MAIN_BIG 0x40
350 #define EXT_BITS1_COBOL_MAIN_LITTLE 0x02
352 #define EXT_BITS1_WEAKEXT_BIG 0x20
353 #define EXT_BITS1_WEAKEXT_LITTLE 0x04
355 /* Dense numbers external record */
358 unsigned char d_rfd
[4];
359 unsigned char d_index
[4];
362 /* Relative file descriptor */
365 unsigned char rfd
[4];
368 /* Optimizer symbol external record */
371 unsigned char o_bits1
[1];
372 unsigned char o_bits2
[1];
373 unsigned char o_bits3
[1];
374 unsigned char o_bits4
[1];
375 struct rndx_ext o_rndx
;
376 unsigned char o_offset
[4];
379 #define OPT_BITS2_VALUE_SH_LEFT_BIG 16
380 #define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0
382 #define OPT_BITS3_VALUE_SH_LEFT_BIG 8
383 #define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8
385 #define OPT_BITS4_VALUE_SH_LEFT_BIG 0
386 #define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16
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