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c906108c SS |
1 | /* Copyright 1990, 1992 Free Software Foundation, Inc. |
2 | * | |
3 | * This code was donated by Intel Corp. | |
4 | * | |
5 | * This is a coff version of a.out.h to support 80960 debugging from | |
6 | * a Unix (possibly BSD) host. It's used by: | |
7 | * o gdb960 to symbols in code generated with Intel (non-GNU) tools. | |
8 | * o comm960 to convert a b.out file to a coff file for download. | |
9 | */ | |
10 | ||
11 | ||
12 | /********************** FILE HEADER **********************/ | |
13 | ||
14 | struct filehdr { | |
15 | unsigned short f_magic; /* magic number */ | |
16 | unsigned short f_nscns; /* number of sections */ | |
17 | long f_timdat; /* time & date stamp */ | |
18 | long f_symptr; /* file pointer to symtab */ | |
19 | long f_nsyms; /* number of symtab entries */ | |
20 | unsigned short f_opthdr; /* sizeof(optional hdr) */ | |
21 | unsigned short f_flags; /* flags */ | |
22 | }; | |
23 | ||
24 | ||
25 | /* Bits for f_flags: | |
26 | * F_RELFLG relocation info stripped from file | |
27 | * F_EXEC file is executable (no unresolved externel references) | |
28 | * F_LNNO line nunbers stripped from file | |
29 | * F_LSYMS local symbols stripped from file | |
30 | * F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax) | |
31 | */ | |
32 | #define F_RELFLG 0000001 | |
33 | #define F_EXEC 0000002 | |
34 | #define F_LNNO 0000004 | |
35 | #define F_LSYMS 0000010 | |
36 | #define F_AR32WR 0000400 | |
37 | ||
38 | ||
39 | /* | |
40 | * Intel 80960 (I960) processor flags. | |
41 | * F_I960TYPE == mask for processor type field. | |
42 | */ | |
43 | #define F_I960TYPE 0170000 | |
44 | #define F_I960CA 0010000 | |
45 | #define F_I960FLOAT 0020000 | |
46 | #define F_I960BA 0030000 | |
47 | #define F_I960XA 0040000 | |
48 | ||
49 | /* | |
50 | * i80960 Magic Numbers | |
51 | */ | |
52 | #define I960ROMAGIC 0540 /* read-only text segments */ | |
53 | #define I960RWMAGIC 0541 /* read-write text segments */ | |
54 | ||
55 | #define I960BADMAG(x) (((x).f_magic!=I960ROMAGIC) && ((x).f_magic!=I960RWMAGIC)) | |
56 | ||
57 | #define FILHDR struct filehdr | |
58 | #define FILHSZ sizeof(FILHDR) | |
59 | ||
60 | ||
61 | /********************** AOUT "OPTIONAL HEADER" **********************/ | |
62 | ||
63 | typedef struct { | |
64 | unsigned long phys_addr; | |
65 | unsigned long bitarray; | |
66 | } TAGBITS; | |
67 | ||
68 | typedef struct aouthdr { | |
69 | short magic; /* type of file */ | |
70 | short vstamp; /* version stamp */ | |
71 | unsigned long tsize; /* text size in bytes, padded to FW bdry*/ | |
72 | unsigned long dsize; /* initialized data " " */ | |
73 | unsigned long bsize; /* uninitialized data " " */ | |
74 | #if U3B | |
75 | unsigned long dum1; | |
76 | unsigned long dum2; /* pad to entry point */ | |
77 | #endif | |
78 | unsigned long entry; /* entry pt. */ | |
79 | unsigned long text_start; /* base of text used for this file */ | |
80 | unsigned long data_start; /* base of data used for this file */ | |
81 | unsigned long tagentries; /* number of tag entries to follow */ | |
82 | } AOUTHDR; | |
83 | ||
84 | /* return a pointer to the tag bits array */ | |
85 | ||
86 | #define TAGPTR(aout) ((TAGBITS *) (&(aout.tagentries)+1)) | |
87 | ||
88 | /* compute size of a header */ | |
89 | ||
90 | #define AOUTSZ(aout) (sizeof(AOUTHDR)+(aout.tagentries*sizeof(TAGBITS))) | |
91 | ||
92 | /********************** STORAGE CLASSES **********************/ | |
93 | ||
94 | #define C_EFCN -1 /* physical end of function */ | |
95 | #define C_NULL 0 | |
96 | #define C_AUTO 1 /* automatic variable */ | |
97 | #define C_EXT 2 /* external symbol */ | |
98 | #define C_STAT 3 /* static */ | |
99 | #define C_REG 4 /* register variable */ | |
100 | #define C_EXTDEF 5 /* external definition */ | |
101 | #define C_LABEL 6 /* label */ | |
102 | #define C_ULABEL 7 /* undefined label */ | |
103 | #define C_MOS 8 /* member of structure */ | |
104 | #define C_ARG 9 /* function argument */ | |
105 | #define C_STRTAG 10 /* structure tag */ | |
106 | #define C_MOU 11 /* member of union */ | |
107 | #define C_UNTAG 12 /* union tag */ | |
108 | #define C_TPDEF 13 /* type definition */ | |
109 | #define C_USTATIC 14 /* undefined static */ | |
110 | #define C_ENTAG 15 /* enumeration tag */ | |
111 | #define C_MOE 16 /* member of enumeration */ | |
112 | #define C_REGPARM 17 /* register parameter */ | |
113 | #define C_FIELD 18 /* bit field */ | |
114 | #define C_BLOCK 100 /* ".bb" or ".eb" */ | |
115 | #define C_FCN 101 /* ".bf" or ".ef" */ | |
116 | #define C_EOS 102 /* end of structure */ | |
117 | #define C_FILE 103 /* file name */ | |
118 | #define C_LINE 104 /* line # reformatted as symbol table entry */ | |
119 | #define C_ALIAS 105 /* duplicate tag */ | |
120 | #define C_HIDDEN 106 /* ext symbol in dmert public lib */ | |
121 | ||
122 | /* New storage classes for 80960 */ | |
123 | ||
124 | #define C_SCALL 107 /* Procedure reachable via system call */ | |
125 | #define C_LEAFPROC 108 /* Leaf procedure, "call" via BAL */ | |
126 | ||
127 | ||
128 | /********************** SECTION HEADER **********************/ | |
129 | ||
130 | struct scnhdr { | |
131 | char s_name[8]; /* section name */ | |
132 | long s_paddr; /* physical address, aliased s_nlib */ | |
133 | long s_vaddr; /* virtual address */ | |
134 | long s_size; /* section size */ | |
135 | long s_scnptr; /* file ptr to raw data for section */ | |
136 | long s_relptr; /* file ptr to relocation */ | |
137 | long s_lnnoptr; /* file ptr to line numbers */ | |
138 | unsigned short s_nreloc; /* number of relocation entries */ | |
139 | unsigned short s_nlnno; /* number of line number entries*/ | |
140 | long s_flags; /* flags */ | |
141 | unsigned long s_align; /* section alignment */ | |
142 | }; | |
143 | ||
144 | /* | |
145 | * names of "special" sections | |
146 | */ | |
147 | #define _TEXT ".text" | |
148 | #define _DATA ".data" | |
149 | #define _BSS ".bss" | |
150 | ||
151 | /* | |
152 | * s_flags "type" | |
153 | */ | |
154 | #define STYP_TEXT 0x20 /* section contains text only */ | |
155 | #define STYP_DATA 0x40 /* section contains data only */ | |
156 | #define STYP_BSS 0x80 /* section contains bss only */ | |
157 | ||
158 | #define SCNHDR struct scnhdr | |
159 | #define SCNHSZ sizeof(SCNHDR) | |
160 | ||
161 | ||
162 | /********************** LINE NUMBERS **********************/ | |
163 | ||
164 | /* 1 line number entry for every "breakpointable" source line in a section. | |
165 | * Line numbers are grouped on a per function basis; first entry in a function | |
166 | * grouping will have l_lnno = 0 and in place of physical address will be the | |
167 | * symbol table index of the function name. | |
168 | */ | |
169 | struct lineno{ | |
170 | union { | |
171 | long l_symndx; /* function name symbol index, iff l_lnno == 0*/ | |
172 | long l_paddr; /* (physical) address of line number */ | |
173 | } l_addr; | |
174 | unsigned short l_lnno; /* line number */ | |
175 | char padding[2]; /* force alignment */ | |
176 | }; | |
177 | ||
178 | #define LINENO struct lineno | |
179 | #define LINESZ sizeof(LINENO) | |
180 | ||
181 | ||
182 | /********************** SYMBOLS **********************/ | |
183 | ||
184 | #define SYMNMLEN 8 /* # characters in a symbol name */ | |
185 | #define FILNMLEN 14 /* # characters in a file name */ | |
186 | #define DIMNUM 4 /* # array dimensions in auxiliary entry */ | |
187 | ||
188 | ||
189 | struct syment { | |
190 | union { | |
191 | char _n_name[SYMNMLEN]; /* old COFF version */ | |
192 | struct { | |
193 | long _n_zeroes; /* new == 0 */ | |
194 | long _n_offset; /* offset into string table */ | |
195 | } _n_n; | |
196 | char *_n_nptr[2]; /* allows for overlaying */ | |
197 | } _n; | |
198 | long n_value; /* value of symbol */ | |
199 | short n_scnum; /* section number */ | |
200 | char pad1[2]; /* force alignment */ | |
201 | unsigned long n_type; /* type and derived type */ | |
202 | char n_sclass; /* storage class */ | |
203 | char n_numaux; /* number of aux. entries */ | |
204 | char pad2[2]; /* force alignment */ | |
205 | }; | |
206 | ||
207 | #define n_name _n._n_name | |
208 | #define n_zeroes _n._n_n._n_zeroes | |
209 | #define n_offset _n._n_n._n_offset | |
210 | ||
211 | /* | |
212 | * Relocatable symbols have number of the section in which they are defined, | |
213 | * or one of the following: | |
214 | */ | |
215 | #define N_UNDEF 0 /* undefined symbol */ | |
216 | #define N_ABS -1 /* value of symbol is absolute */ | |
217 | #define N_DEBUG -2 /* debugging symbol -- symbol value is meaningless */ | |
218 | ||
219 | /* | |
220 | * Type of a symbol, in low 4 bits of the word | |
221 | */ | |
222 | #define T_NULL 0 | |
223 | #define T_VOID 1 /* function argument (only used by compiler) */ | |
224 | #define T_CHAR 2 /* character */ | |
225 | #define T_SHORT 3 /* short integer */ | |
226 | #define T_INT 4 /* integer */ | |
227 | #define T_LONG 5 /* long integer */ | |
228 | #define T_FLOAT 6 /* floating point */ | |
229 | #define T_DOUBLE 7 /* double word */ | |
230 | #define T_STRUCT 8 /* structure */ | |
231 | #define T_UNION 9 /* union */ | |
232 | #define T_ENUM 10 /* enumeration */ | |
233 | #define T_MOE 11 /* member of enumeration*/ | |
234 | #define T_UCHAR 12 /* unsigned character */ | |
235 | #define T_USHORT 13 /* unsigned short */ | |
236 | #define T_UINT 14 /* unsigned integer */ | |
237 | #define T_ULONG 15 /* unsigned long */ | |
238 | #define T_LNGDBL 16 /* long double */ | |
239 | ||
240 | ||
241 | /* | |
242 | * derived types | |
243 | */ | |
244 | #define DT_PTR 1 /* pointer */ | |
245 | #define DT_FCN 2 /* function */ | |
246 | #define DT_ARY 3 /* array */ | |
247 | ||
248 | #define N_BTMASK 037 | |
249 | #define N_TMASK 0140 | |
250 | #define N_BTSHFT 5 | |
251 | #define N_TSHIFT 2 | |
252 | ||
253 | #define BTYPE(x) ((x) & N_BTMASK) | |
254 | ||
255 | ||
256 | #define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT)) | |
257 | #define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT)) | |
258 | #define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT)) | |
259 | ||
260 | #define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK)) | |
261 | ||
262 | union auxent { | |
263 | struct { | |
264 | long x_tagndx; /* str, un, or enum tag indx */ | |
265 | union { | |
266 | struct { | |
267 | unsigned short x_lnno; /* declaration line number */ | |
268 | unsigned short x_size; /* str/union/array size */ | |
269 | } x_lnsz; | |
270 | long x_fsize; /* size of function */ | |
271 | } x_misc; | |
272 | union { | |
273 | struct { /* if ISFCN, tag, or .bb */ | |
274 | long x_lnnoptr; /* ptr to fcn line # */ | |
275 | long x_endndx; /* entry ndx past block end */ | |
276 | } x_fcn; | |
277 | struct { /* if ISARY, up to 4 dimen. */ | |
278 | unsigned short x_dimen[DIMNUM]; | |
279 | } x_ary; | |
280 | } x_fcnary; | |
281 | unsigned short x_tvndx; /* tv index */ | |
282 | } x_sym; | |
283 | ||
284 | union { | |
285 | char x_fname[FILNMLEN]; | |
286 | struct { | |
287 | long x_zeroes; | |
288 | long x_offset; | |
289 | } x_n; | |
290 | } x_file; | |
291 | ||
292 | struct { | |
293 | long x_scnlen; /* section length */ | |
294 | unsigned short x_nreloc; /* # relocation entries */ | |
295 | unsigned short x_nlinno; /* # line numbers */ | |
296 | } x_scn; | |
297 | ||
298 | struct { | |
299 | long x_stdindx; | |
300 | } x_sc; | |
301 | ||
302 | struct { | |
303 | unsigned long x_balntry; | |
304 | } x_bal; | |
305 | ||
306 | char a[sizeof(struct syment)]; /* force auxent/syment sizes to match */ | |
307 | }; | |
308 | ||
309 | #define SYMENT struct syment | |
310 | #define SYMESZ sizeof(SYMENT) | |
311 | #define AUXENT union auxent | |
312 | #define AUXESZ sizeof(AUXENT) | |
313 | ||
314 | #if VAX || I960 | |
315 | # define _ETEXT "_etext" | |
316 | #else | |
317 | # define _ETEXT "etext" | |
318 | #endif | |
319 | ||
320 | /********************** RELOCATION DIRECTIVES **********************/ | |
321 | ||
322 | struct reloc { | |
323 | long r_vaddr; /* Virtual address of reference */ | |
324 | long r_symndx; /* Index into symbol table */ | |
325 | unsigned short r_type; /* Relocation type */ | |
326 | char pad[2]; /* Unused */ | |
327 | }; | |
328 | ||
329 | /* Only values of r_type GNU/960 cares about */ | |
330 | #define R_RELLONG 17 /* Direct 32-bit relocation */ | |
331 | #define R_IPRMED 25 /* 24-bit ip-relative relocation */ | |
332 | #define R_OPTCALL 27 /* 32-bit optimizable call (leafproc/sysproc) */ | |
333 | ||
334 | ||
335 | #define RELOC struct reloc | |
336 | #define RELSZ sizeof(RELOC) |