Commit | Line | Data |
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4f1d9bd8 NC |
1 | /* coff information for 80960. Origins: Intel corp, natch. |
2 | ||
e4e42b45 | 3 | Copyright 2001, 2010 Free Software Foundation, Inc. |
4f1d9bd8 NC |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
e4e42b45 | 7 | the Free Software Foundation; either version 3 of the License, or |
4f1d9bd8 NC |
8 | (at your option) any later version. |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
e4e42b45 NC |
17 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
18 | MA 02110-1301, USA. */ | |
252b5132 RH |
19 | |
20 | /* NOTE: Tagentries (cf TAGBITS) are no longer used by the 960 */ | |
21 | ||
22 | /********************** FILE HEADER **********************/ | |
23 | ||
4f1d9bd8 NC |
24 | struct external_filehdr |
25 | { | |
26 | char f_magic[2]; /* magic number */ | |
27 | char f_nscns[2]; /* number of sections */ | |
28 | char f_timdat[4]; /* time & date stamp */ | |
29 | char f_symptr[4]; /* file pointer to symtab */ | |
30 | char f_nsyms[4]; /* number of symtab entries */ | |
31 | char f_opthdr[2]; /* sizeof(optional hdr) */ | |
32 | char f_flags[2]; /* flags */ | |
252b5132 RH |
33 | }; |
34 | ||
35 | #define OMAGIC (0407) /* old impure format. data immediately | |
36 | follows text. both sections are rw. */ | |
37 | #define NMAGIC (0410) /* split i&d, read-only text */ | |
38 | ||
39 | /* | |
40 | * Intel 80960 (I960) processor flags. | |
41 | * F_I960TYPE == mask for processor type field. | |
42 | */ | |
43 | ||
44 | #define F_I960TYPE (0xf000) | |
45 | #define F_I960CORE (0x1000) | |
46 | #define F_I960KB (0x2000) | |
47 | #define F_I960SB (0x2000) | |
48 | #define F_I960MC (0x3000) | |
49 | #define F_I960XA (0x4000) | |
50 | #define F_I960CA (0x5000) | |
51 | #define F_I960KA (0x6000) | |
52 | #define F_I960SA (0x6000) | |
53 | #define F_I960JX (0x7000) | |
54 | #define F_I960HX (0x8000) | |
55 | ||
56 | ||
57 | /** i80960 Magic Numbers | |
58 | */ | |
59 | ||
60 | #define I960ROMAGIC (0x160) /* read-only text segments */ | |
61 | #define I960RWMAGIC (0x161) /* read-write text segments */ | |
62 | ||
63 | #define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC)) | |
64 | ||
65 | #define FILHDR struct external_filehdr | |
66 | #define FILHSZ 20 | |
67 | ||
68 | /********************** AOUT "OPTIONAL HEADER" **********************/ | |
69 | ||
4f1d9bd8 NC |
70 | typedef struct |
71 | { | |
72 | unsigned long phys_addr; | |
73 | unsigned long bitarray; | |
252b5132 RH |
74 | } TAGBITS; |
75 | ||
252b5132 RH |
76 | typedef struct |
77 | { | |
78 | char magic[2]; /* type of file */ | |
79 | char vstamp[2]; /* version stamp */ | |
80 | char tsize[4]; /* text size in bytes, padded to FW bdry*/ | |
81 | char dsize[4]; /* initialized data " " */ | |
82 | char bsize[4]; /* uninitialized data " " */ | |
83 | char entry[4]; /* entry pt. */ | |
84 | char text_start[4]; /* base of text used for this file */ | |
85 | char data_start[4]; /* base of data used for this file */ | |
86 | char tagentries[4]; /* number of tag entries to follow */ | |
87 | } | |
88 | AOUTHDR; | |
89 | ||
90 | /* return a pointer to the tag bits array */ | |
91 | ||
92 | #define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1)) | |
93 | ||
94 | /* compute size of a header */ | |
95 | ||
96 | /*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/ | |
97 | #define AOUTSZ 32 | |
98 | #define AOUTHDRSZ 32 | |
99 | ||
100 | ||
101 | /********************** SECTION HEADER **********************/ | |
102 | ||
4f1d9bd8 NC |
103 | struct external_scnhdr |
104 | { | |
105 | char s_name[8]; /* section name */ | |
106 | char s_paddr[4]; /* physical address, aliased s_nlib */ | |
107 | char s_vaddr[4]; /* virtual address */ | |
108 | char s_size[4]; /* section size */ | |
109 | char s_scnptr[4]; /* file ptr to raw data for section */ | |
110 | char s_relptr[4]; /* file ptr to relocation */ | |
111 | char s_lnnoptr[4]; /* file ptr to line numbers */ | |
112 | char s_nreloc[2]; /* number of relocation entries */ | |
113 | char s_nlnno[2]; /* number of line number entries*/ | |
114 | char s_flags[4]; /* flags */ | |
115 | char s_align[4]; /* section alignment */ | |
252b5132 RH |
116 | }; |
117 | ||
118 | ||
119 | #define SCNHDR struct external_scnhdr | |
120 | #define SCNHSZ 44 | |
121 | ||
122 | /* | |
123 | * names of "special" sections | |
124 | */ | |
125 | #define _TEXT ".text" | |
126 | #define _DATA ".data" | |
127 | #define _BSS ".bss" | |
128 | ||
129 | /********************** LINE NUMBERS **********************/ | |
130 | ||
131 | /* 1 line number entry for every "breakpointable" source line in a section. | |
132 | * Line numbers are grouped on a per function basis; first entry in a function | |
133 | * grouping will have l_lnno = 0 and in place of physical address will be the | |
134 | * symbol table index of the function name. | |
135 | */ | |
4f1d9bd8 NC |
136 | struct external_lineno |
137 | { | |
138 | union | |
139 | { | |
140 | char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ | |
141 | char l_paddr[4]; /* (physical) address of line number */ | |
142 | } l_addr; | |
143 | ||
144 | char l_lnno[2]; /* line number */ | |
145 | char padding[2]; /* force alignment */ | |
252b5132 RH |
146 | }; |
147 | ||
148 | ||
149 | #define LINENO struct external_lineno | |
150 | #define LINESZ 8 | |
151 | ||
252b5132 RH |
152 | /********************** SYMBOLS **********************/ |
153 | ||
154 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ | |
155 | #define E_FILNMLEN 14 /* # characters in a file name */ | |
156 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ | |
157 | ||
158 | struct external_syment | |
159 | { | |
4f1d9bd8 NC |
160 | union |
161 | { | |
252b5132 | 162 | char e_name[E_SYMNMLEN]; |
4f1d9bd8 NC |
163 | |
164 | struct | |
165 | { | |
252b5132 RH |
166 | char e_zeroes[4]; |
167 | char e_offset[4]; | |
168 | } e; | |
169 | } e; | |
4f1d9bd8 | 170 | |
252b5132 RH |
171 | char e_value[4]; |
172 | char e_scnum[2]; | |
173 | char e_flags[2]; | |
174 | char e_type[4]; | |
175 | char e_sclass[1]; | |
176 | char e_numaux[1]; | |
177 | char pad2[2]; | |
178 | }; | |
179 | ||
252b5132 RH |
180 | #define N_BTMASK (0x1f) |
181 | #define N_TMASK (0x60) | |
182 | #define N_BTSHFT (5) | |
183 | #define N_TSHIFT (2) | |
184 | ||
4f1d9bd8 NC |
185 | union external_auxent |
186 | { | |
187 | struct | |
188 | { | |
189 | char x_tagndx[4]; /* str, un, or enum tag indx */ | |
190 | ||
191 | union | |
192 | { | |
193 | struct | |
194 | { | |
195 | char x_lnno[2]; /* declaration line number */ | |
196 | char x_size[2]; /* str/union/array size */ | |
197 | } x_lnsz; | |
198 | ||
199 | char x_fsize[4]; /* size of function */ | |
200 | ||
201 | } x_misc; | |
202 | ||
203 | union | |
204 | { | |
205 | struct /* if ISFCN, tag, or .bb */ | |
206 | { | |
207 | char x_lnnoptr[4]; /* ptr to fcn line # */ | |
208 | char x_endndx[4]; /* entry ndx past block end */ | |
209 | } x_fcn; | |
210 | ||
211 | struct /* if ISARY, up to 4 dimen. */ | |
212 | { | |
213 | char x_dimen[E_DIMNUM][2]; | |
214 | } x_ary; | |
215 | ||
216 | } x_fcnary; | |
217 | ||
218 | char x_tvndx[2]; /* tv index */ | |
219 | ||
220 | } x_sym; | |
221 | ||
222 | union | |
223 | { | |
224 | char x_fname[E_FILNMLEN]; | |
225 | ||
226 | struct | |
227 | { | |
228 | char x_zeroes[4]; | |
229 | char x_offset[4]; | |
230 | } x_n; | |
231 | ||
232 | } x_file; | |
233 | ||
234 | struct | |
235 | { | |
236 | char x_scnlen[4]; /* section length */ | |
237 | char x_nreloc[2]; /* # relocation entries */ | |
238 | char x_nlinno[2]; /* # line numbers */ | |
239 | ||
240 | } x_scn; | |
241 | ||
242 | struct | |
243 | { | |
244 | char x_tvfill[4]; /* tv fill value */ | |
245 | char x_tvlen[2]; /* length of .tv */ | |
246 | char x_tvran[2][2]; /* tv range */ | |
247 | ||
248 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ | |
249 | ||
250 | /****************************************** | |
251 | * I960-specific *2nd* aux. entry formats | |
252 | ******************************************/ | |
253 | struct | |
254 | { | |
255 | /* This is a very old typo that keeps getting propagated. */ | |
252b5132 | 256 | #define x_stdindx x_stindx |
4f1d9bd8 NC |
257 | char x_stindx[4]; /* sys. table entry */ |
258 | } x_sc; /* system call entry */ | |
252b5132 | 259 | |
4f1d9bd8 NC |
260 | struct |
261 | { | |
262 | char x_balntry[4]; /* BAL entry point */ | |
263 | } x_bal; /* BAL-callable function */ | |
252b5132 | 264 | |
4f1d9bd8 NC |
265 | struct |
266 | { | |
267 | char x_timestamp[4]; /* time stamp */ | |
268 | char x_idstring[20]; /* producer identity string */ | |
252b5132 | 269 | |
4f1d9bd8 | 270 | } x_ident; /* Producer ident info */ |
252b5132 RH |
271 | }; |
272 | ||
252b5132 RH |
273 | #define SYMENT struct external_syment |
274 | #define SYMESZ 24 | |
275 | #define AUXENT union external_auxent | |
276 | #define AUXESZ 24 | |
277 | ||
278 | # define _ETEXT "_etext" | |
279 | ||
280 | /********************** RELOCATION DIRECTIVES **********************/ | |
281 | ||
4f1d9bd8 NC |
282 | struct external_reloc |
283 | { | |
252b5132 RH |
284 | char r_vaddr[4]; |
285 | char r_symndx[4]; | |
286 | char r_type[2]; | |
287 | char pad[2]; | |
288 | }; | |
289 | ||
290 | /* r_type values for the i960. */ | |
291 | ||
292 | /* The i960 uses R_RELLONG, which is defined in internal.h as 0x11. | |
293 | It is an absolute 32 bit relocation. */ | |
294 | ||
295 | #define R_IPRMED (0x19) /* 24-bit ip-relative relocation */ | |
296 | #define R_OPTCALL (0x1b) /* 32-bit optimizable call (leafproc/sysproc) */ | |
297 | #define R_OPTCALLX (0x1c) /* 64-bit optimizable call (leafproc/sysproc) */ | |
298 | ||
299 | /* The following relocation types are defined use by relaxing linkers, | |
300 | which convert 32 bit calls (which require a 64 bit instruction) | |
301 | into 24 bit calls (which require a 32 bit instruction) when | |
302 | possible. It will be possible whenever the target of the call is | |
303 | within a 24 bit range of the call instruction. | |
304 | ||
305 | It is always safe to ignore these relocations. They only serve to | |
306 | mark points which the relaxing linker will have to consider. The | |
307 | assembler must ensure that the correct code is generated even if | |
308 | the relocations are ignored. In particular, this means that the | |
309 | R_IPR13 relocation may not appear with an external symbol. */ | |
310 | ||
311 | #define R_IPR13 (0x1d) /* 13 bit ip-relative branch */ | |
312 | #define R_ALIGN (0x1e) /* alignment marker. This has no | |
313 | associated symbol. Instead, the | |
314 | r_symndx field indicates the | |
315 | require alignment at this point in | |
316 | the file. It must be a power of 2. */ | |
317 | ||
318 | #define RELOC struct external_reloc | |
319 | #define RELSZ 12 | |
320 |