Commit | Line | Data |
---|---|---|
4f1d9bd8 NC |
1 | /* coff information for 80960. Origins: Intel corp, natch. |
2 | ||
3 | Copyright 2001 Free Software Foundation, Inc. | |
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 | |
7 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
e172dbf8 | 17 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
252b5132 RH |
18 | |
19 | /* NOTE: Tagentries (cf TAGBITS) are no longer used by the 960 */ | |
20 | ||
21 | /********************** FILE HEADER **********************/ | |
22 | ||
4f1d9bd8 NC |
23 | struct external_filehdr |
24 | { | |
25 | char f_magic[2]; /* magic number */ | |
26 | char f_nscns[2]; /* number of sections */ | |
27 | char f_timdat[4]; /* time & date stamp */ | |
28 | char f_symptr[4]; /* file pointer to symtab */ | |
29 | char f_nsyms[4]; /* number of symtab entries */ | |
30 | char f_opthdr[2]; /* sizeof(optional hdr) */ | |
31 | char f_flags[2]; /* flags */ | |
252b5132 RH |
32 | }; |
33 | ||
34 | #define OMAGIC (0407) /* old impure format. data immediately | |
35 | follows text. both sections are rw. */ | |
36 | #define NMAGIC (0410) /* split i&d, read-only text */ | |
37 | ||
38 | /* | |
39 | * Intel 80960 (I960) processor flags. | |
40 | * F_I960TYPE == mask for processor type field. | |
41 | */ | |
42 | ||
43 | #define F_I960TYPE (0xf000) | |
44 | #define F_I960CORE (0x1000) | |
45 | #define F_I960KB (0x2000) | |
46 | #define F_I960SB (0x2000) | |
47 | #define F_I960MC (0x3000) | |
48 | #define F_I960XA (0x4000) | |
49 | #define F_I960CA (0x5000) | |
50 | #define F_I960KA (0x6000) | |
51 | #define F_I960SA (0x6000) | |
52 | #define F_I960JX (0x7000) | |
53 | #define F_I960HX (0x8000) | |
54 | ||
55 | ||
56 | /** i80960 Magic Numbers | |
57 | */ | |
58 | ||
59 | #define I960ROMAGIC (0x160) /* read-only text segments */ | |
60 | #define I960RWMAGIC (0x161) /* read-write text segments */ | |
61 | ||
62 | #define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC)) | |
63 | ||
64 | #define FILHDR struct external_filehdr | |
65 | #define FILHSZ 20 | |
66 | ||
67 | /********************** AOUT "OPTIONAL HEADER" **********************/ | |
68 | ||
4f1d9bd8 NC |
69 | typedef struct |
70 | { | |
71 | unsigned long phys_addr; | |
72 | unsigned long bitarray; | |
252b5132 RH |
73 | } TAGBITS; |
74 | ||
252b5132 RH |
75 | typedef struct |
76 | { | |
77 | char magic[2]; /* type of file */ | |
78 | char vstamp[2]; /* version stamp */ | |
79 | char tsize[4]; /* text size in bytes, padded to FW bdry*/ | |
80 | char dsize[4]; /* initialized data " " */ | |
81 | char bsize[4]; /* uninitialized data " " */ | |
82 | char entry[4]; /* entry pt. */ | |
83 | char text_start[4]; /* base of text used for this file */ | |
84 | char data_start[4]; /* base of data used for this file */ | |
85 | char tagentries[4]; /* number of tag entries to follow */ | |
86 | } | |
87 | AOUTHDR; | |
88 | ||
89 | /* return a pointer to the tag bits array */ | |
90 | ||
91 | #define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1)) | |
92 | ||
93 | /* compute size of a header */ | |
94 | ||
95 | /*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/ | |
96 | #define AOUTSZ 32 | |
97 | #define AOUTHDRSZ 32 | |
98 | ||
99 | ||
100 | /********************** SECTION HEADER **********************/ | |
101 | ||
4f1d9bd8 NC |
102 | struct external_scnhdr |
103 | { | |
104 | char s_name[8]; /* section name */ | |
105 | char s_paddr[4]; /* physical address, aliased s_nlib */ | |
106 | char s_vaddr[4]; /* virtual address */ | |
107 | char s_size[4]; /* section size */ | |
108 | char s_scnptr[4]; /* file ptr to raw data for section */ | |
109 | char s_relptr[4]; /* file ptr to relocation */ | |
110 | char s_lnnoptr[4]; /* file ptr to line numbers */ | |
111 | char s_nreloc[2]; /* number of relocation entries */ | |
112 | char s_nlnno[2]; /* number of line number entries*/ | |
113 | char s_flags[4]; /* flags */ | |
114 | char s_align[4]; /* section alignment */ | |
252b5132 RH |
115 | }; |
116 | ||
117 | ||
118 | #define SCNHDR struct external_scnhdr | |
119 | #define SCNHSZ 44 | |
120 | ||
121 | /* | |
122 | * names of "special" sections | |
123 | */ | |
124 | #define _TEXT ".text" | |
125 | #define _DATA ".data" | |
126 | #define _BSS ".bss" | |
127 | ||
128 | /********************** LINE NUMBERS **********************/ | |
129 | ||
130 | /* 1 line number entry for every "breakpointable" source line in a section. | |
131 | * Line numbers are grouped on a per function basis; first entry in a function | |
132 | * grouping will have l_lnno = 0 and in place of physical address will be the | |
133 | * symbol table index of the function name. | |
134 | */ | |
4f1d9bd8 NC |
135 | struct external_lineno |
136 | { | |
137 | union | |
138 | { | |
139 | char l_symndx[4]; /* function name symbol index, iff l_lnno == 0*/ | |
140 | char l_paddr[4]; /* (physical) address of line number */ | |
141 | } l_addr; | |
142 | ||
143 | char l_lnno[2]; /* line number */ | |
144 | char padding[2]; /* force alignment */ | |
252b5132 RH |
145 | }; |
146 | ||
147 | ||
148 | #define LINENO struct external_lineno | |
149 | #define LINESZ 8 | |
150 | ||
252b5132 RH |
151 | /********************** SYMBOLS **********************/ |
152 | ||
153 | #define E_SYMNMLEN 8 /* # characters in a symbol name */ | |
154 | #define E_FILNMLEN 14 /* # characters in a file name */ | |
155 | #define E_DIMNUM 4 /* # array dimensions in auxiliary entry */ | |
156 | ||
157 | struct external_syment | |
158 | { | |
4f1d9bd8 NC |
159 | union |
160 | { | |
252b5132 | 161 | char e_name[E_SYMNMLEN]; |
4f1d9bd8 NC |
162 | |
163 | struct | |
164 | { | |
252b5132 RH |
165 | char e_zeroes[4]; |
166 | char e_offset[4]; | |
167 | } e; | |
168 | } e; | |
4f1d9bd8 | 169 | |
252b5132 RH |
170 | char e_value[4]; |
171 | char e_scnum[2]; | |
172 | char e_flags[2]; | |
173 | char e_type[4]; | |
174 | char e_sclass[1]; | |
175 | char e_numaux[1]; | |
176 | char pad2[2]; | |
177 | }; | |
178 | ||
252b5132 RH |
179 | #define N_BTMASK (0x1f) |
180 | #define N_TMASK (0x60) | |
181 | #define N_BTSHFT (5) | |
182 | #define N_TSHIFT (2) | |
183 | ||
4f1d9bd8 NC |
184 | union external_auxent |
185 | { | |
186 | struct | |
187 | { | |
188 | char x_tagndx[4]; /* str, un, or enum tag indx */ | |
189 | ||
190 | union | |
191 | { | |
192 | struct | |
193 | { | |
194 | char x_lnno[2]; /* declaration line number */ | |
195 | char x_size[2]; /* str/union/array size */ | |
196 | } x_lnsz; | |
197 | ||
198 | char x_fsize[4]; /* size of function */ | |
199 | ||
200 | } x_misc; | |
201 | ||
202 | union | |
203 | { | |
204 | struct /* if ISFCN, tag, or .bb */ | |
205 | { | |
206 | char x_lnnoptr[4]; /* ptr to fcn line # */ | |
207 | char x_endndx[4]; /* entry ndx past block end */ | |
208 | } x_fcn; | |
209 | ||
210 | struct /* if ISARY, up to 4 dimen. */ | |
211 | { | |
212 | char x_dimen[E_DIMNUM][2]; | |
213 | } x_ary; | |
214 | ||
215 | } x_fcnary; | |
216 | ||
217 | char x_tvndx[2]; /* tv index */ | |
218 | ||
219 | } x_sym; | |
220 | ||
221 | union | |
222 | { | |
223 | char x_fname[E_FILNMLEN]; | |
224 | ||
225 | struct | |
226 | { | |
227 | char x_zeroes[4]; | |
228 | char x_offset[4]; | |
229 | } x_n; | |
230 | ||
231 | } x_file; | |
232 | ||
233 | struct | |
234 | { | |
235 | char x_scnlen[4]; /* section length */ | |
236 | char x_nreloc[2]; /* # relocation entries */ | |
237 | char x_nlinno[2]; /* # line numbers */ | |
238 | ||
239 | } x_scn; | |
240 | ||
241 | struct | |
242 | { | |
243 | char x_tvfill[4]; /* tv fill value */ | |
244 | char x_tvlen[2]; /* length of .tv */ | |
245 | char x_tvran[2][2]; /* tv range */ | |
246 | ||
247 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ | |
248 | ||
249 | /****************************************** | |
250 | * I960-specific *2nd* aux. entry formats | |
251 | ******************************************/ | |
252 | struct | |
253 | { | |
254 | /* This is a very old typo that keeps getting propagated. */ | |
252b5132 | 255 | #define x_stdindx x_stindx |
4f1d9bd8 NC |
256 | char x_stindx[4]; /* sys. table entry */ |
257 | } x_sc; /* system call entry */ | |
252b5132 | 258 | |
4f1d9bd8 NC |
259 | struct |
260 | { | |
261 | char x_balntry[4]; /* BAL entry point */ | |
262 | } x_bal; /* BAL-callable function */ | |
252b5132 | 263 | |
4f1d9bd8 NC |
264 | struct |
265 | { | |
266 | char x_timestamp[4]; /* time stamp */ | |
267 | char x_idstring[20]; /* producer identity string */ | |
252b5132 | 268 | |
4f1d9bd8 | 269 | } x_ident; /* Producer ident info */ |
252b5132 RH |
270 | }; |
271 | ||
252b5132 RH |
272 | #define SYMENT struct external_syment |
273 | #define SYMESZ 24 | |
274 | #define AUXENT union external_auxent | |
275 | #define AUXESZ 24 | |
276 | ||
277 | # define _ETEXT "_etext" | |
278 | ||
279 | /********************** RELOCATION DIRECTIVES **********************/ | |
280 | ||
4f1d9bd8 NC |
281 | struct external_reloc |
282 | { | |
252b5132 RH |
283 | char r_vaddr[4]; |
284 | char r_symndx[4]; | |
285 | char r_type[2]; | |
286 | char pad[2]; | |
287 | }; | |
288 | ||
289 | /* r_type values for the i960. */ | |
290 | ||
291 | /* The i960 uses R_RELLONG, which is defined in internal.h as 0x11. | |
292 | It is an absolute 32 bit relocation. */ | |
293 | ||
294 | #define R_IPRMED (0x19) /* 24-bit ip-relative relocation */ | |
295 | #define R_OPTCALL (0x1b) /* 32-bit optimizable call (leafproc/sysproc) */ | |
296 | #define R_OPTCALLX (0x1c) /* 64-bit optimizable call (leafproc/sysproc) */ | |
297 | ||
298 | /* The following relocation types are defined use by relaxing linkers, | |
299 | which convert 32 bit calls (which require a 64 bit instruction) | |
300 | into 24 bit calls (which require a 32 bit instruction) when | |
301 | possible. It will be possible whenever the target of the call is | |
302 | within a 24 bit range of the call instruction. | |
303 | ||
304 | It is always safe to ignore these relocations. They only serve to | |
305 | mark points which the relaxing linker will have to consider. The | |
306 | assembler must ensure that the correct code is generated even if | |
307 | the relocations are ignored. In particular, this means that the | |
308 | R_IPR13 relocation may not appear with an external symbol. */ | |
309 | ||
310 | #define R_IPR13 (0x1d) /* 13 bit ip-relative branch */ | |
311 | #define R_ALIGN (0x1e) /* alignment marker. This has no | |
312 | associated symbol. Instead, the | |
313 | r_symndx field indicates the | |
314 | require alignment at this point in | |
315 | the file. It must be a power of 2. */ | |
316 | ||
317 | #define RELOC struct external_reloc | |
318 | #define RELSZ 12 | |
319 |