Commit | Line | Data |
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045f6b66 ILT |
1 | /* ECOFF support on Alpha machines. |
2 | coff/ecoff.h must be included before this file. */ | |
3 | ||
4 | /********************** FILE HEADER **********************/ | |
5 | ||
6 | struct external_filehdr { | |
7 | unsigned char f_magic[2]; /* magic number */ | |
8 | unsigned char f_nscns[2]; /* number of sections */ | |
9 | unsigned char f_timdat[4]; /* time & date stamp */ | |
10 | unsigned char f_symptr[8]; /* file pointer to symtab */ | |
11 | unsigned char f_nsyms[4]; /* number of symtab entries */ | |
12 | unsigned char f_opthdr[2]; /* sizeof(optional hdr) */ | |
13 | unsigned char f_flags[2]; /* flags */ | |
14 | }; | |
15 | ||
16 | /* Magic numbers are defined in coff/ecoff.h. */ | |
17 | #define ALPHA_ECOFF_BADMAG(x) ((x).f_magic!=ALPHA_MAGIC) | |
18 | ||
19 | #define FILHDR struct external_filehdr | |
20 | #define FILHSZ sizeof(FILHDR) | |
21 | ||
22 | /********************** AOUT "OPTIONAL HEADER" **********************/ | |
23 | ||
24 | ||
25 | typedef struct external_aouthdr | |
26 | { | |
27 | unsigned char magic[2]; /* type of file */ | |
28 | unsigned char vstamp[2]; /* version stamp */ | |
29 | unsigned char tsize[8]; /* text size in bytes, padded to FW bdry*/ | |
30 | unsigned char dsize[8]; /* initialized data " " */ | |
31 | unsigned char bsize[8]; /* uninitialized data " " */ | |
32 | unsigned char entry[8]; /* entry pt. */ | |
33 | unsigned char text_start[8]; /* base of text used for this file */ | |
34 | unsigned char data_start[8]; /* base of data used for this file */ | |
35 | unsigned char bss_start[8]; /* base of bss used for this file */ | |
36 | unsigned char gprmask[4]; /* ?? */ | |
37 | unsigned char cprmask[4][8]; /* ?? */ | |
38 | unsigned char gp_value[4]; /* value for gp register */ | |
39 | } AOUTHDR; | |
40 | ||
41 | /* compute size of a header */ | |
42 | ||
43 | #define AOUTSZ (sizeof(AOUTHDR)) | |
44 | ||
45 | /********************** SECTION HEADER **********************/ | |
46 | ||
47 | struct external_scnhdr { | |
48 | unsigned char s_name[8]; /* section name */ | |
49 | unsigned char s_paddr[8]; /* physical address, aliased s_nlib */ | |
50 | unsigned char s_vaddr[8]; /* virtual address */ | |
51 | unsigned char s_size[8]; /* section size */ | |
52 | unsigned char s_scnptr[8]; /* file ptr to raw data for section */ | |
53 | unsigned char s_relptr[8]; /* file ptr to relocation */ | |
54 | unsigned char s_lnnoptr[8]; /* file ptr to line numbers */ | |
55 | unsigned char s_nreloc[2]; /* number of relocation entries */ | |
56 | unsigned char s_nlnno[2]; /* number of line number entries*/ | |
57 | unsigned char s_flags[4]; /* flags */ | |
58 | }; | |
59 | ||
60 | #define SCNHDR struct external_scnhdr | |
61 | #define SCNHSZ sizeof(SCNHDR) | |
62 | ||
63 | /********************** RELOCATION DIRECTIVES **********************/ | |
64 | ||
65 | struct external_reloc { | |
66 | unsigned char r_vaddr[8]; | |
67 | unsigned char r_bits[4]; | |
68 | }; | |
69 | ||
70 | #define RELOC struct external_reloc | |
71 | #define RELSZ 8 | |
72 | ||
73 | /* MIPS ECOFF uses a packed 8 byte format for relocs. These constants | |
74 | are used to unpack the r_bits field. */ | |
75 | ||
76 | #define RELOC_BITS0_SYMNDX_SH_LEFT_BIG 16 | |
77 | #define RELOC_BITS0_SYMNDX_SH_LEFT_LITTLE 0 | |
78 | ||
79 | #define RELOC_BITS1_SYMNDX_SH_LEFT_BIG 8 | |
80 | #define RELOC_BITS1_SYMNDX_SH_LEFT_LITTLE 8 | |
81 | ||
82 | #define RELOC_BITS2_SYMNDX_SH_LEFT_BIG 0 | |
83 | #define RELOC_BITS2_SYMNDX_SH_LEFT_LITTLE 16 | |
84 | ||
85 | #define RELOC_BITS3_TYPE_BIG 0x1E | |
86 | #define RELOC_BITS3_TYPE_SH_BIG 1 | |
87 | #define RELOC_BITS3_TYPE_LITTLE 0x78 | |
88 | #define RELOC_BITS3_TYPE_SH_LITTLE 3 | |
89 | ||
90 | #define RELOC_BITS3_EXTERN_BIG 0x01 | |
91 | #define RELOC_BITS3_EXTERN_LITTLE 0x80 | |
92 | ||
93 | #define DEFAULT_DATA_SECTION_ALIGNMENT 16 | |
94 | #define DEFAULT_BSS_SECTION_ALIGNMENT 16 | |
95 | #define DEFAULT_TEXT_SECTION_ALIGNMENT 16 | |
96 | /* For new sections we havn't heard of before */ | |
97 | #define DEFAULT_SECTION_ALIGNMENT 16 | |
98 | ||
99 | /********************** SYMBOLIC INFORMATION **********************/ | |
100 | ||
101 | /* Written by John Gilmore. */ | |
102 | ||
103 | /* ECOFF uses COFF-like section structures, but its own symbol format. | |
104 | This file defines the symbol format in fields whose size and alignment | |
105 | will not vary on different host systems. */ | |
106 | ||
107 | /* File header as a set of bytes */ | |
108 | ||
109 | struct hdr_ext { | |
110 | unsigned char h_magic[2]; | |
111 | unsigned char h_vstamp[2]; | |
112 | unsigned char h_ilineMax[4]; | |
113 | unsigned char h_cbLine[4]; | |
114 | unsigned char h_cbLineOffset[4]; | |
115 | unsigned char h_idnMax[4]; | |
116 | unsigned char h_cbDnOffset[4]; | |
117 | unsigned char h_ipdMax[4]; | |
118 | unsigned char h_cbPdOffset[4]; | |
119 | unsigned char h_isymMax[4]; | |
120 | unsigned char h_cbSymOffset[4]; | |
121 | unsigned char h_ioptMax[4]; | |
122 | unsigned char h_cbOptOffset[4]; | |
123 | unsigned char h_iauxMax[4]; | |
124 | unsigned char h_cbAuxOffset[4]; | |
125 | unsigned char h_issMax[4]; | |
126 | unsigned char h_cbSsOffset[4]; | |
127 | unsigned char h_issExtMax[4]; | |
128 | unsigned char h_cbSsExtOffset[4]; | |
129 | unsigned char h_ifdMax[4]; | |
130 | unsigned char h_cbFdOffset[4]; | |
131 | unsigned char h_crfd[4]; | |
132 | unsigned char h_cbRfdOffset[4]; | |
133 | unsigned char h_iextMax[4]; | |
134 | unsigned char h_cbExtOffset[4]; | |
135 | }; | |
136 | ||
137 | /* File descriptor external record */ | |
138 | ||
139 | struct fdr_ext { | |
140 | unsigned char f_adr[4]; | |
141 | unsigned char f_rss[4]; | |
142 | unsigned char f_issBase[4]; | |
143 | unsigned char f_cbSs[4]; | |
144 | unsigned char f_isymBase[4]; | |
145 | unsigned char f_csym[4]; | |
146 | unsigned char f_ilineBase[4]; | |
147 | unsigned char f_cline[4]; | |
148 | unsigned char f_ioptBase[4]; | |
149 | unsigned char f_copt[4]; | |
150 | unsigned char f_ipdFirst[2]; | |
151 | unsigned char f_cpd[2]; | |
152 | unsigned char f_iauxBase[4]; | |
153 | unsigned char f_caux[4]; | |
154 | unsigned char f_rfdBase[4]; | |
155 | unsigned char f_crfd[4]; | |
156 | unsigned char f_bits1[1]; | |
157 | unsigned char f_bits2[3]; | |
158 | unsigned char f_cbLineOffset[4]; | |
159 | unsigned char f_cbLine[4]; | |
160 | }; | |
161 | ||
162 | #define FDR_BITS1_LANG_BIG 0xF8 | |
163 | #define FDR_BITS1_LANG_SH_BIG 3 | |
164 | #define FDR_BITS1_LANG_LITTLE 0x1F | |
165 | #define FDR_BITS1_LANG_SH_LITTLE 0 | |
166 | ||
167 | #define FDR_BITS1_FMERGE_BIG 0x04 | |
168 | #define FDR_BITS1_FMERGE_LITTLE 0x20 | |
169 | ||
170 | #define FDR_BITS1_FREADIN_BIG 0x02 | |
171 | #define FDR_BITS1_FREADIN_LITTLE 0x40 | |
172 | ||
173 | #define FDR_BITS1_FBIGENDIAN_BIG 0x01 | |
174 | #define FDR_BITS1_FBIGENDIAN_LITTLE 0x80 | |
175 | ||
176 | #define FDR_BITS2_GLEVEL_BIG 0xC0 | |
177 | #define FDR_BITS2_GLEVEL_SH_BIG 6 | |
178 | #define FDR_BITS2_GLEVEL_LITTLE 0x03 | |
179 | #define FDR_BITS2_GLEVEL_SH_LITTLE 0 | |
180 | ||
181 | /* We ignore the `reserved' field in bits2. */ | |
182 | ||
183 | /* Procedure descriptor external record */ | |
184 | ||
185 | struct pdr_ext { | |
186 | unsigned char p_adr[4]; | |
187 | unsigned char p_isym[4]; | |
188 | unsigned char p_iline[4]; | |
189 | unsigned char p_regmask[4]; | |
190 | unsigned char p_regoffset[4]; | |
191 | unsigned char p_iopt[4]; | |
192 | unsigned char p_fregmask[4]; | |
193 | unsigned char p_fregoffset[4]; | |
194 | unsigned char p_frameoffset[4]; | |
195 | unsigned char p_framereg[2]; | |
196 | unsigned char p_pcreg[2]; | |
197 | unsigned char p_lnLow[4]; | |
198 | unsigned char p_lnHigh[4]; | |
199 | unsigned char p_cbLineOffset[4]; | |
200 | }; | |
201 | ||
202 | /* Line numbers */ | |
203 | ||
204 | struct line_ext { | |
205 | unsigned char l_line[4]; | |
206 | }; | |
207 | ||
208 | /* Symbol external record */ | |
209 | ||
210 | struct sym_ext { | |
211 | unsigned char s_iss[4]; | |
212 | unsigned char s_value[4]; | |
213 | unsigned char s_bits1[1]; | |
214 | unsigned char s_bits2[1]; | |
215 | unsigned char s_bits3[1]; | |
216 | unsigned char s_bits4[1]; | |
217 | }; | |
218 | ||
219 | #define SYM_BITS1_ST_BIG 0xFC | |
220 | #define SYM_BITS1_ST_SH_BIG 2 | |
221 | #define SYM_BITS1_ST_LITTLE 0x3F | |
222 | #define SYM_BITS1_ST_SH_LITTLE 0 | |
223 | ||
224 | #define SYM_BITS1_SC_BIG 0x03 | |
225 | #define SYM_BITS1_SC_SH_LEFT_BIG 3 | |
226 | #define SYM_BITS1_SC_LITTLE 0xC0 | |
227 | #define SYM_BITS1_SC_SH_LITTLE 6 | |
228 | ||
229 | #define SYM_BITS2_SC_BIG 0xE0 | |
230 | #define SYM_BITS2_SC_SH_BIG 5 | |
231 | #define SYM_BITS2_SC_LITTLE 0x07 | |
232 | #define SYM_BITS2_SC_SH_LEFT_LITTLE 2 | |
233 | ||
234 | #define SYM_BITS2_RESERVED_BIG 0x10 | |
235 | #define SYM_BITS2_RESERVED_LITTLE 0x08 | |
236 | ||
237 | #define SYM_BITS2_INDEX_BIG 0x0F | |
238 | #define SYM_BITS2_INDEX_SH_LEFT_BIG 16 | |
239 | #define SYM_BITS2_INDEX_LITTLE 0xF0 | |
240 | #define SYM_BITS2_INDEX_SH_LITTLE 4 | |
241 | ||
242 | #define SYM_BITS3_INDEX_SH_LEFT_BIG 8 | |
243 | #define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4 | |
244 | ||
245 | #define SYM_BITS4_INDEX_SH_LEFT_BIG 0 | |
246 | #define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12 | |
247 | ||
248 | /* External symbol external record */ | |
249 | ||
250 | struct ext_ext { | |
251 | unsigned char es_bits1[1]; | |
252 | unsigned char es_bits2[1]; | |
253 | unsigned char es_ifd[2]; | |
254 | struct sym_ext es_asym; | |
255 | }; | |
256 | ||
257 | #define EXT_BITS1_JMPTBL_BIG 0x80 | |
258 | #define EXT_BITS1_JMPTBL_LITTLE 0x01 | |
259 | ||
260 | #define EXT_BITS1_COBOL_MAIN_BIG 0x40 | |
261 | #define EXT_BITS1_COBOL_MAIN_LITTLE 0x02 | |
262 | ||
263 | #define EXT_BITS1_WEAKEXT_BIG 0x20 | |
264 | #define EXT_BITS1_WEAKEXT_LITTLE 0x04 | |
265 | ||
266 | /* Dense numbers external record */ | |
267 | ||
268 | struct dnr_ext { | |
269 | unsigned char d_rfd[4]; | |
270 | unsigned char d_index[4]; | |
271 | }; | |
272 | ||
273 | /* Relative file descriptor */ | |
274 | ||
275 | struct rfd_ext { | |
276 | unsigned char rfd[4]; | |
277 | }; | |
278 | ||
279 | /* Optimizer symbol external record */ | |
280 | ||
281 | struct opt_ext { | |
282 | unsigned char o_bits1[1]; | |
283 | unsigned char o_bits2[1]; | |
284 | unsigned char o_bits3[1]; | |
285 | unsigned char o_bits4[1]; | |
286 | struct rndx_ext o_rndx; | |
287 | unsigned char o_offset[4]; | |
288 | }; | |
289 | ||
290 | #define OPT_BITS2_VALUE_SH_LEFT_BIG 16 | |
291 | #define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0 | |
292 | ||
293 | #define OPT_BITS3_VALUE_SH_LEFT_BIG 8 | |
294 | #define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8 | |
295 | ||
296 | #define OPT_BITS4_VALUE_SH_LEFT_BIG 0 | |
297 | #define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16 |