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a39116f1 RP |
1 | /* coff.gnu.h |
2 | Copyright (C) 1987 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS 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, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS 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 GAS; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
fecd2382 RP |
20 | /*** coff information for 80960. Origins: Intel, AMD, etc., natch. */ |
21 | ||
22 | /* | |
23 | * At this point I'm sure this file is right for i960 and I'm pretty sure it's | |
24 | * right for a29k, although it hasn't been tested rigorously. Please feel free | |
25 | * to add your own machine's description here. Without that info, it isn't | |
26 | * possible to build cross development tools from elsewhere nor is it easy to | |
27 | * continue to support your machines format. | |
28 | * | |
29 | * The TC_foo ifdef's are mine. They are what gas uses. The other ifdef's | |
30 | * remain for documentation from other scavenged files. xoxorich. | |
31 | */ | |
32 | ||
33 | /* $Id$ */ | |
34 | ||
35 | /********************** FILE HEADER **********************/ | |
36 | ||
37 | struct filehdr { | |
38 | unsigned short f_magic; /* magic number */ | |
39 | unsigned short f_nscns; /* number of sections */ | |
40 | long f_timdat; /* time & date stamp */ | |
41 | long f_symptr; /* file pointer to symtab */ | |
42 | long f_nsyms; /* number of symtab entries */ | |
43 | unsigned short f_opthdr; /* sizeof(optional hdr) */ | |
44 | unsigned short f_flags; /* flags */ | |
45 | }; | |
46 | ||
47 | /* Bits for f_flags: | |
48 | * F_RELFLG relocation info stripped from file | |
49 | * F_EXEC file is executable (no unresolved externel references) | |
50 | * F_LNNO line nunbers stripped from file | |
51 | * F_LSYMS local symbols stripped from file | |
52 | * F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax) | |
53 | */ | |
54 | #define F_RELFLG (0x0001) | |
55 | #define F_EXEC (0x0002) | |
56 | #define F_LNNO (0x0004) | |
57 | #define F_LSYMS (0x0008) | |
58 | ||
59 | #ifdef TC_I960 | |
60 | #define F_AR32WR (0x0010) /* File has 32 bits per word, least | |
61 | significant byte first. */ | |
62 | #else /* TC_I960 */ | |
63 | #define F_AR32WR (0x0100) | |
64 | #endif /* TC_I960 */ | |
65 | ||
66 | #define F_MINMAL (0x0010) /* ??? */ | |
67 | #define F_UPDATE (0x0020) /* ??? */ | |
68 | #define F_SWABD (0x0040) /* ??? */ | |
69 | #define F_AR16WR (0x0080) /* File has the byte ordering used by | |
70 | the PDP*-11/70 processor. */ | |
71 | #define F_AR32W (0x0200) /* File has 32 bits per word, most | |
72 | significant byte first. */ | |
73 | ||
74 | /* | |
75 | * Intel 80960 (I960) processor flags. | |
76 | * F_I960TYPE == mask for processor type field. | |
77 | */ | |
78 | ||
79 | #define F_I960TYPE (0xf000) | |
80 | #define F_I960CORE (0x1000) | |
81 | #define F_I960KB (0x2000) | |
82 | #define F_I960SB (0x2000) | |
83 | #define F_I960MC (0x3000) | |
84 | #define F_I960XA (0x4000) | |
85 | #define F_I960CA (0x5000) | |
86 | #define F_I960KA (0x6000) | |
87 | #define F_I960SA (0x6000) | |
88 | ||
89 | /* | |
90 | * i80960 Magic Numbers | |
91 | */ | |
92 | ||
93 | #define I960ROMAGIC (0x160) /* read-only text segments */ | |
94 | #define I960RWMAGIC (0x161) /* read-write text segments */ | |
95 | ||
96 | #define I960BADMAG(x) (((x).f_magic != I960ROMAGIC) && ((x).f_magic != I960RWMAGIC)) | |
97 | ||
98 | #define SIPFBOMAGIC (0x17a) /* Am29000 (Byte 0 is MSB - Big Endian) */ | |
99 | #define SIPRBOMAGIC (0x17b) /* Am29000 (Byte 0 is LSB - Little Endian) */ | |
100 | ||
101 | #define A29KBADMAG(x) (((x).f_magic != SIPFBOMAGIC) && ((x).f_magic != SIPRBOMAGIC)) | |
102 | ||
103 | #define FILHDR struct filehdr | |
104 | #define FILHSZ sizeof(FILHDR) | |
105 | ||
106 | ||
107 | /********************** AOUT "OPTIONAL HEADER" **********************/ | |
108 | ||
109 | typedef struct { | |
110 | unsigned long phys_addr; | |
111 | unsigned long bitarray; | |
112 | } TAGBITS; | |
113 | ||
114 | /* These appear to be used only by exec(2). I don't know who cares | |
115 | about them in a cross development environment. In any case, this | |
116 | is my collection after researching the issue for a few hours. | |
117 | Apparently, most have these have remained essentially unchanged | |
118 | since v7 days, although a few new ones have been added. xoxorich. */ | |
119 | ||
120 | #define BAD0MAGIC (0401) /* (?) "lpd (UNIX/RT)" */ | |
121 | #define BAD1MAGIC (0405) /* (?) overlay */ | |
122 | #define OMAGIC (0407) /* old impure format. data immediately | |
123 | follows text. both sections are rw. */ | |
124 | #define NMAGIC (0410) /* split i&d, read-only text */ | |
125 | #define A_MAGIC3 (0411) /* (?) "separated I&D" */ | |
126 | #define ZMAGIC (0413) /* like NMAGIC, but demand loaded */ | |
127 | #define PAGEMAGIC2 (0414) /* (?) like ZMAGIC, but address zero | |
128 | explicitly unmapped. */ | |
129 | #define REGMAGIC (0414) /* (?) a PAGEMAGIC2 alias? */ | |
130 | #define PAGEMAGIC3 (0415) /* (?) like ZMAGIC, but address zero mapped. */ | |
131 | #define A_MAGIC5 (0437) /* (?) "system overlay, separated I&D" */ | |
a39116f1 | 132 | /* intended for non-unix cross development */ |
fecd2382 RP |
133 | #define SASMAGIC (010000) /* Single Address Space */ |
134 | #define MASMAGIC (020000) /* (?) "Multiple (separate I & D) Address Spaces" */ | |
135 | ||
136 | typedef struct aouthdr { | |
137 | short magic; /* type of file */ | |
138 | short vstamp; /* version stamp */ | |
139 | unsigned long tsize; /* text size in bytes, padded to FW bdry*/ | |
140 | unsigned long dsize; /* initialized data " " */ | |
141 | unsigned long bsize; /* uninitialized data " " */ | |
142 | #if U3B | |
143 | unsigned long dum1; | |
144 | unsigned long dum2; /* pad to entry point */ | |
145 | #endif | |
146 | unsigned long entry; /* entry pt. */ | |
147 | unsigned long text_start; /* base of text used for this file */ | |
148 | unsigned long data_start; /* base of data used for this file */ | |
a39116f1 | 149 | /* CAREFUL: some formats omit the tagentries member. */ |
fecd2382 RP |
150 | unsigned long tagentries; /* number of tag entries to |
151 | follow (always zero for i960) */ | |
152 | } AOUTHDR; | |
153 | ||
154 | /* return a pointer to the tag bits array */ | |
155 | ||
156 | #define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1)) | |
157 | ||
158 | /* compute size of a header */ | |
159 | ||
160 | /*#define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS)))*/ | |
161 | #define AOUTSZ (sizeof(AOUTHDR)) | |
162 | ||
163 | ||
164 | /********************** STORAGE CLASSES **********************/ | |
165 | ||
166 | #define C_EFCN -1 /* physical end of function */ | |
167 | #define C_NULL 0 | |
168 | #define C_AUTO 1 /* automatic variable */ | |
169 | #define C_EXT 2 /* external symbol */ | |
170 | #define C_STAT 3 /* static */ | |
171 | #define C_REG 4 /* register variable */ | |
172 | #define C_EXTDEF 5 /* external definition */ | |
173 | #define C_LABEL 6 /* label */ | |
174 | #define C_ULABEL 7 /* undefined label */ | |
175 | #define C_MOS 8 /* member of structure */ | |
176 | #define C_ARG 9 /* function argument */ | |
177 | #define C_STRTAG 10 /* structure tag */ | |
178 | #define C_MOU 11 /* member of union */ | |
179 | #define C_UNTAG 12 /* union tag */ | |
180 | #define C_TPDEF 13 /* type definition */ | |
181 | #define C_USTATIC 14 /* undefined static */ | |
182 | #define C_ENTAG 15 /* enumeration tag */ | |
183 | #define C_MOE 16 /* member of enumeration */ | |
184 | #define C_REGPARM 17 /* register parameter */ | |
185 | #define C_FIELD 18 /* bit field */ | |
186 | ||
187 | #ifdef TC_I960 | |
188 | #define C_AUTOARG 19 /* auto argument */ | |
189 | #define C_LASTENT 20 /* dummy entry (end of block) */ | |
190 | #endif /* TC_I960 */ | |
191 | ||
192 | #ifdef TC_A29K | |
193 | #define C_GLBLREG 19 /* global register */ | |
194 | #define C_EXTREG 20 /* external global register */ | |
195 | #define C_DEFREG 21 /* ext. def. of global register */ | |
196 | #define C_STARTOF 22 /* as29 $SIZEOF and $STARTOF symbols */ | |
197 | #endif /* TC_A29K */ | |
198 | ||
199 | #define C_BLOCK 100 /* ".bb" or ".eb" */ | |
200 | #define C_FCN 101 /* ".bf" or ".ef" */ | |
201 | #define C_EOS 102 /* end of structure */ | |
202 | #define C_FILE 103 /* file name */ | |
203 | #define C_LINE 104 /* line # reformatted as symbol table entry */ | |
204 | #define C_ALIAS 105 /* duplicate tag */ | |
205 | #define C_HIDDEN 106 /* ext symbol in dmert public lib. like static, | |
206 | used to avoid name conflicts. */ | |
207 | ||
208 | #ifdef TC_I960 | |
a39116f1 | 209 | /* New storage classes for 80960 */ |
fecd2382 | 210 | #define C_SCALL 107 /* Procedure reachable via system call */ |
a39116f1 | 211 | /* C_LEAFPROC is obsolete. Use C_LEAFEXT or C_LEAFSTAT */ |
fecd2382 RP |
212 | #define C_LEAFPROC 108 /* Leaf procedure, "call" via BAL */ |
213 | #define C_LEAFEXT 108 | |
214 | #define C_OPTVAR 109 /* Optimized variable */ | |
215 | #define C_DEFINE 110 /* Preprocessor #define */ | |
216 | #define C_PRAGMA 111 /* Advice to compiler or linker */ | |
217 | #define C_SEGMENT 112 /* 80960 segment name */ | |
218 | #define C_LEAFSTAT 113 /* Static leaf */ | |
219 | #endif /* TC_I960 */ | |
220 | ||
221 | #ifdef TC_A29K | |
222 | #define C_SHADOW 107 /* shadow symbol */ | |
223 | #endif /* TC_A29K */ | |
224 | ||
225 | /********************** SECTION HEADER **********************/ | |
226 | ||
227 | struct scnhdr { | |
228 | char s_name[8]; /* section name */ | |
229 | long s_paddr; /* physical address, aliased s_nlib */ | |
230 | long s_vaddr; /* virtual address */ | |
231 | long s_size; /* section size */ | |
232 | long s_scnptr; /* file ptr to raw data for section */ | |
233 | long s_relptr; /* file ptr to relocation */ | |
234 | long s_lnnoptr; /* file ptr to line numbers */ | |
235 | unsigned short s_nreloc; /* number of relocation entries */ | |
236 | unsigned short s_nlnno; /* number of line number entries */ | |
237 | long s_flags; /* flags */ | |
a39116f1 | 238 | |
fecd2382 RP |
239 | #ifdef TC_I960 |
240 | unsigned long s_align; /* section alignment */ | |
241 | #endif /* TC_I960 */ | |
242 | }; | |
243 | ||
244 | #define SCNHDR struct scnhdr | |
245 | #define SCNHSZ sizeof(SCNHDR) | |
246 | ||
247 | /* | |
248 | * names of "special" sections | |
249 | */ | |
250 | #define _TEXT ".text" | |
251 | #define _DATA ".data" | |
252 | #define _BSS ".bss" | |
253 | ||
254 | /* | |
255 | * s_flags "type" | |
256 | */ | |
257 | ||
258 | /* | |
259 | * In instances where it is necessary for a linker to | |
260 | * produce an output file which contains text or data not | |
261 | * based at virtual address 0, e.g. for a ROM, then the | |
262 | * linker should accept address base information as command | |
263 | * input and use PAD sections to skip over unused addresses. | |
264 | * (at least for a29k. Maybe others.) | |
265 | */ | |
266 | ||
267 | #define STYP_REG (0x0000) /* "regular" section: allocated, relocated, loaded */ | |
268 | #define STYP_DSECT (0x0001) /* "dummy" section: not allocated, relocated, not loaded */ | |
269 | #define STYP_NOLOAD (0x0002) /* "noload" section: allocated, relocated, not loaded */ | |
270 | #define STYP_GROUP (0x0004) /* "grouped" section: formed of input sections */ | |
271 | #define STYP_PAD (0x0008) /* "padding" section: not allocated, not relocated, loaded */ | |
272 | #define STYP_COPY (0x0010) /* "copy" section: for decision function used by field update; not allocated, not relocated, | |
273 | loaded; reloc & lineno entries processed normally */ | |
274 | #define STYP_TEXT (0x0020) /* section contains text only */ | |
275 | #define S_SHRSEG (0x0020) /* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile | |
276 | will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will | |
277 | update all process invocations. */ | |
278 | #define STYP_DATA (0x0040) /* section contains data only */ | |
279 | #define STYP_BSS (0x0080) /* section contains bss only */ | |
280 | #define S_NEWFCN (0x0100) /* In a minimal file or an update file, a new function (as compared with a replaced function) */ | |
281 | #define STYP_INFO (0x0200) /* comment section : not allocated not relocated, not loaded */ | |
282 | #define STYP_OVER (0x0400) /* overlay section : relocated not allocated or loaded */ | |
283 | #define STYP_LIB (0x0800) /* for .lib section : same as INFO */ | |
284 | #define STYP_MERGE (0x2000) /* merge section -- combines with text, data or bss sections only */ | |
285 | #define STYP_REVERSE_PAD (0x4000) /* section will be padded with no-op instructions wherever padding is necessary and there is a | |
286 | word of contiguous bytes beginning on a word boundary. */ | |
287 | ||
288 | #ifdef TC_A29K | |
289 | /* NOTE: The use of STYP_BSSREG for relocation is not yet defined. */ | |
290 | #define STYP_BSSREG 0x1200 /* Global register area (like STYP_INFO) */ | |
291 | #define STYP_ENVIR 0x2200 /* Environment (like STYP_INFO) */ | |
292 | #define STYP_ABS 0x4000 /* Absolute (allocated, not reloc, loaded) */ | |
293 | #define STYP_LIT 0x8020 /* Literal data (like STYP_TEXT) */ | |
294 | #endif /* TC_A29K */ | |
295 | ||
296 | /********************** LINE NUMBERS **********************/ | |
297 | ||
298 | /* 1 line number entry for every "breakpointable" source line in a section. | |
299 | * Line numbers are grouped on a per function basis; first entry in a function | |
300 | * grouping will have l_lnno = 0 and in place of physical address will be the | |
301 | * symbol table index of the function name. | |
302 | */ | |
303 | struct lineno { | |
304 | union { | |
305 | long l_symndx; /* symbol index of function name, iff l_lnno == 0*/ | |
306 | long l_paddr; /* (physical) address of line number */ | |
307 | } l_addr; | |
308 | unsigned short l_lnno; /* line number */ | |
309 | #ifdef TC_I960 | |
a39116f1 | 310 | /* not used on a29k */ |
fecd2382 RP |
311 | char padding[2]; /* force alignment */ |
312 | #endif /* TC_I960 */ | |
313 | }; | |
314 | ||
315 | #define LINENO struct lineno | |
316 | #define LINESZ sizeof(LINENO) | |
317 | ||
318 | ||
319 | /********************** SYMBOLS **********************/ | |
320 | ||
a39116f1 RP |
321 | #define SYMNMLEN 8 /* # characters in a symbol name */ |
322 | #define FILNMLEN 14 /* # characters in a file name */ | |
fecd2382 RP |
323 | #define DIMNUM 4 /* # array dimensions in auxiliary entry */ |
324 | ||
325 | struct syment { | |
326 | union { | |
a39116f1 | 327 | char _n_name[SYMNMLEN]; /* old COFF version */ |
fecd2382 | 328 | struct { |
a39116f1 | 329 | long _n_zeroes; /* new == 0 */ |
fecd2382 RP |
330 | long _n_offset; /* offset into string table */ |
331 | } _n_n; | |
a39116f1 | 332 | char *_n_nptr[2]; /* allows for overlaying */ |
fecd2382 | 333 | } _n; |
a39116f1 RP |
334 | long n_value; /* value of symbol */ |
335 | short n_scnum; /* section number */ | |
336 | ||
fecd2382 | 337 | #ifdef TC_I960 |
a39116f1 RP |
338 | /* This isn't yet used on the i960. In some formats this |
339 | is two bytes of padding. In others, it is missing entirely. */ | |
340 | unsigned short n_flags; /* copy of flags from filhdr */ | |
fecd2382 | 341 | #endif /* TC_I960 */ |
a39116f1 | 342 | |
fecd2382 | 343 | #ifdef TC_A29K |
a39116f1 | 344 | unsigned short n_type; /* type and derived type */ |
fecd2382 | 345 | #else /* TC_A29K */ |
a39116f1 RP |
346 | /* at least i960 uses long */ |
347 | unsigned long n_type; /* type and derived type */ | |
fecd2382 | 348 | #endif /* TC_A29K */ |
a39116f1 RP |
349 | |
350 | char n_sclass; /* storage class */ | |
351 | char n_numaux; /* number of aux. entries */ | |
352 | ||
fecd2382 | 353 | #ifndef TC_A29K |
a39116f1 | 354 | char pad2[2]; /* force alignment */ |
fecd2382 RP |
355 | #endif /* TC_A29K */ |
356 | }; | |
357 | ||
358 | #define SYMENT struct syment | |
359 | #define SYMESZ sizeof(SYMENT) /* This had better also be sizeof(AUXENT) */ | |
360 | ||
361 | #define n_name _n._n_name | |
362 | #define n_ptr _n._n_nptr[1] | |
363 | #define n_zeroes _n._n_n._n_zeroes | |
364 | #define n_offset _n._n_n._n_offset | |
a39116f1 RP |
365 | |
366 | /* | |
367 | * Relocatable symbols have number of the section in which they are defined, | |
368 | * or one of the following: | |
369 | */ | |
370 | ||
fecd2382 RP |
371 | #define N_SCNUM ((short) 1-65535) /* section num where symbol defined */ |
372 | #define N_UNDEF ((short)0) /* undefined symbol */ | |
373 | #define N_ABS ((short)-1) /* value of symbol is absolute */ | |
374 | #define N_DEBUG ((short)-2) /* debugging symbol -- symbol value is meaningless */ | |
375 | #define N_TV ((short)-3) /* indicates symbol needs preload transfer vector */ | |
376 | #define P_TV ((short)-4) /* indicates symbol needs transfer vector (postload) */ | |
377 | ||
378 | /* | |
379 | * Type of a symbol, in low 4 bits of the word | |
380 | */ | |
381 | #define T_NULL 0 /* type not assigned */ | |
a39116f1 | 382 | #define T_VOID 1 /* function argument (only used by compiler) (but now real void). */ |
fecd2382 RP |
383 | #define T_CHAR 2 /* character */ |
384 | #define T_SHORT 3 /* short integer */ | |
385 | #define T_INT 4 /* integer */ | |
386 | #define T_LONG 5 /* long integer */ | |
387 | #define T_FLOAT 6 /* floating point */ | |
388 | #define T_DOUBLE 7 /* double word */ | |
389 | #define T_STRUCT 8 /* structure */ | |
390 | #define T_UNION 9 /* union */ | |
391 | #define T_ENUM 10 /* enumeration */ | |
392 | #define T_MOE 11 /* member of enumeration */ | |
393 | #define T_UCHAR 12 /* unsigned character */ | |
394 | #define T_USHORT 13 /* unsigned short */ | |
395 | #define T_UINT 14 /* unsigned integer */ | |
396 | #define T_ULONG 15 /* unsigned long */ | |
397 | ||
398 | #ifdef TC_I960 | |
399 | #define T_LNGDBL 16 /* long double */ | |
400 | #endif /* TC_I960 */ | |
401 | ||
402 | /* | |
403 | * derived types, in n_type | |
404 | */ | |
405 | #define DT_NON (0) /* no derived type */ | |
406 | #define DT_PTR (1) /* pointer */ | |
407 | #define DT_FCN (2) /* function */ | |
408 | #define DT_ARY (3) /* array */ | |
409 | ||
410 | #ifndef TC_I960 | |
411 | ||
412 | #define N_BTMASK (0x0f) | |
413 | #define N_TMASK (0x30) | |
414 | #define N_BTSHFT (4) | |
415 | #define N_TSHIFT (2) | |
416 | ||
417 | #else /* TC_I960 */ | |
418 | ||
419 | #define N_BTMASK (0x1f) | |
420 | #define N_TMASK (0x60) | |
421 | #define N_BTSHFT (5) | |
422 | #define N_TSHIFT (2) | |
423 | ||
424 | #endif /* TC_I960 */ | |
425 | ||
426 | #define BTYPE(x) ((x) & N_BTMASK) | |
427 | ||
428 | #define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT)) | |
429 | #define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT)) | |
430 | #define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT)) | |
431 | ||
432 | #define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK)) | |
433 | ||
434 | union auxent { | |
435 | struct { | |
436 | long x_tagndx; /* str, un, or enum tag indx */ | |
437 | union { | |
438 | struct { | |
a39116f1 RP |
439 | unsigned short x_lnno; /* declaration line number */ |
440 | unsigned short x_size; /* str/union/array size */ | |
fecd2382 RP |
441 | } x_lnsz; |
442 | long x_fsize; /* size of function */ | |
443 | } x_misc; | |
444 | union { | |
445 | struct { /* if ISFCN, tag, or .bb */ | |
a39116f1 RP |
446 | long x_lnnoptr; /* ptr to fcn line # */ |
447 | long x_endndx; /* entry ndx past block end */ | |
fecd2382 RP |
448 | } x_fcn; |
449 | struct { /* if ISARY, up to 4 dimen. */ | |
a39116f1 | 450 | unsigned short x_dimen[DIMNUM]; |
fecd2382 RP |
451 | } x_ary; |
452 | } x_fcnary; | |
453 | unsigned short x_tvndx; /* tv index */ | |
454 | } x_sym; | |
a39116f1 RP |
455 | |
456 | /* This was just a struct x_file with x_fname only in a29k. xoxorich. */ | |
fecd2382 RP |
457 | union { |
458 | char x_fname[FILNMLEN]; | |
459 | struct { | |
460 | long x_zeroes; | |
461 | long x_offset; | |
462 | } x_n; | |
463 | } x_file; | |
a39116f1 | 464 | |
fecd2382 RP |
465 | struct { |
466 | long x_scnlen; /* section length */ | |
467 | unsigned short x_nreloc; /* # relocation entries */ | |
468 | unsigned short x_nlinno; /* # line numbers */ | |
469 | } x_scn; | |
a39116f1 | 470 | |
fecd2382 RP |
471 | struct { |
472 | long x_tvfill; /* tv fill value */ | |
473 | unsigned short x_tvlen; /* length of .tv */ | |
a39116f1 RP |
474 | |
475 | /* This field was typo'd x_tvrna on a29k. xoxorich. */ | |
fecd2382 RP |
476 | unsigned short x_tvran[2]; /* tv range */ |
477 | } x_tv; /* info about .tv section (in auxent of symbol .tv)) */ | |
a39116f1 | 478 | |
fecd2382 RP |
479 | #ifdef TC_I960 |
480 | /****************************************** | |
481 | * I960-specific *2nd* aux. entry formats | |
482 | ******************************************/ | |
483 | struct { | |
a39116f1 | 484 | /* This is a very old typo that keeps getting propogated. */ |
fecd2382 RP |
485 | #define x_stdindx x_stindx |
486 | long x_stindx; /* sys. table entry */ | |
487 | } x_sc; /* system call entry */ | |
a39116f1 | 488 | |
fecd2382 RP |
489 | struct { |
490 | unsigned long x_balntry; /* BAL entry point */ | |
491 | } x_bal; /* BAL-callable function */ | |
a39116f1 | 492 | |
fecd2382 RP |
493 | struct { |
494 | unsigned long x_timestamp; /* time stamp */ | |
495 | char x_idstring[20]; /* producer identity string */ | |
496 | } x_ident; /* Producer ident info */ | |
a39116f1 | 497 | |
fecd2382 RP |
498 | char a[sizeof(struct syment)]; /* force auxent/syment sizes to match */ |
499 | #endif /* TC_I960 */ | |
500 | }; | |
501 | ||
502 | #define AUXENT union auxent | |
503 | #define AUXESZ sizeof(AUXENT) /* This had better also be sizeof(SYMENT) */ | |
504 | ||
505 | #if VAX || I960 | |
506 | # define _ETEXT "_etext" | |
507 | #else | |
508 | # define _ETEXT "etext" | |
509 | #endif | |
510 | ||
511 | /********************** RELOCATION DIRECTIVES **********************/ | |
512 | ||
513 | struct reloc { | |
514 | long r_vaddr; /* Virtual address of reference */ | |
515 | long r_symndx; /* Index into symbol table */ | |
516 | unsigned short r_type; /* Relocation type */ | |
517 | #ifdef TC_I960 | |
a39116f1 | 518 | /* not used for a29k */ |
fecd2382 RP |
519 | char pad[2]; /* Unused */ |
520 | #endif /* TC_I960 */ | |
521 | }; | |
522 | ||
523 | #define RELOC struct reloc | |
524 | #define RELSZ sizeof(RELOC) | |
525 | ||
526 | #ifdef TC_I960 | |
527 | #define R_RELLONG (0x11) /* Direct 32-bit relocation */ | |
528 | #define R_IPRSHORT (0x18) | |
529 | #define R_IPRMED (0x19) /* 24-bit ip-relative relocation */ | |
530 | #define R_IPRLONG (0x1a) | |
531 | #define R_OPTCALL (0x1b) /* 32-bit optimizable call (leafproc/sysproc) */ | |
532 | #define R_OPTCALLX (0x1c) /* 64-bit optimizable call (leafproc/sysproc) */ | |
533 | #define R_GETSEG (0x1d) | |
534 | #define R_GETPA (0x1e) | |
535 | #define R_TAGWORD (0x1f) | |
536 | #endif /* TC_I960 */ | |
537 | ||
538 | #ifdef TC_A29K | |
539 | /* | |
540 | * NOTE: All the "I" forms refer to Am29000 instruction | |
541 | * formats. The linker is expected to know how the numeric | |
542 | * information is split and/or aligned within the | |
543 | * instruction word(s). R_BYTE works for instructions, too. | |
544 | * | |
545 | * If the parameter to a CONSTH instruction is a relocatable | |
546 | * type, two relocation records are written. The first has | |
547 | * an r_type of R_IHIHALF (33 octal) and a normal r_vaddr | |
548 | * and r_symndx. The second relocation record has an r_type | |
549 | * of R_IHCONST (34 octal), a normal r_vaddr (which is | |
550 | * redundant), and an r_symndx containing the 32-bit | |
551 | * constant offset to the relocation instead of the actual | |
552 | * symbol table index. This second record is always | |
553 | * written, even if the constant offset is zero. The | |
554 | * constant fields of the instruction are set to zero. | |
555 | */ | |
556 | ||
557 | #define R_ABS (0x00) /* reference is absolute */ | |
558 | #define R_IREL (0x18) /* instruction relative (jmp/call) */ | |
559 | #define R_IABS (0x19) /* instruction absolute (jmp/call) */ | |
560 | #define R_ILOHALF (0x1a) /* instruction low half (const) */ | |
561 | #define R_IHIHALF (0x1b) /* instruction high half (consth) part 1 */ | |
562 | #define R_IHCONST (0x1c) /* instruction high half (consth) part 2 | |
563 | constant offset of R_IHIHALF relocation */ | |
564 | #define R_BYTE (0x1d) /* relocatable byte value */ | |
565 | #define R_HWORD (0x1e) /* relocatable halfword value */ | |
566 | #define R_WORD (0x1f) /* relocatable word value */ | |
567 | #define R_IGLBLRC (0x20) /* instruction global register RC */ | |
568 | #define R_IGLBLRA (0x21) /* instruction global register RA */ | |
569 | #define R_IGLBLRB (0x22) /* instruction global register RB */ | |
570 | #endif /* TC_A29K */ | |
571 | ||
572 | ||
573 | #define DEFAULT_DATA_SECTION_ALIGNMENT 4 | |
574 | #define DEFAULT_BSS_SECTION_ALIGNMENT 4 | |
575 | #define DEFAULT_TEXT_SECTION_ALIGNMENT 16 | |
a39116f1 | 576 | /* For new sections we haven't heard of before */ |
fecd2382 RP |
577 | #define DEFAULT_SECTION_ALIGNMENT 4 |
578 | ||
fecd2382 RP |
579 | /* |
580 | * Local Variables: | |
581 | * comment-column: 0 | |
582 | * End: | |
583 | */ | |
584 | ||
585 | /* end of coff.gnu.h */ |