Add dgux as a valid OS. Add msdos as an invalid, but accepted, os.
[deliverable/binutils-gdb.git] / include / internalcoff.h
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1/********************** FILE HEADER **********************/
2struct internal_filehdr
3{
4 unsigned short f_magic; /* magic number */
5 unsigned short f_nscns; /* number of sections */
6 long f_timdat; /* time & date stamp */
7 long f_symptr; /* file pointer to symtab */
8 long f_nsyms; /* number of symtab entries */
9 unsigned short f_opthdr; /* sizeof(optional hdr) */
10 unsigned short f_flags; /* flags */
11};
12
13/* Bits for f_flags:
14 * F_RELFLG relocation info stripped from file
15 * F_EXEC file is executable (no unresolved external references)
16 * F_LNNO line numbers stripped from file
17 * F_LSYMS local symbols stripped from file
18 * F_AR32WR file has byte ordering of an AR32WR machine (e.g. vax)
19 */
20
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21#define F_RELFLG (0x0001)
22#define F_EXEC (0x0002)
23#define F_LNNO (0x0004)
24#define F_LSYMS (0x0008)
25#define F_AR32WR (0x0010)
26#define F_AR32W 0x200
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27/********************** AOUT "OPTIONAL HEADER" **********************/
28struct internal_aouthdr {
29 short magic; /* type of file */
30 short vstamp; /* version stamp */
31 unsigned long tsize; /* text size in bytes, padded to FW bdry*/
32 unsigned long dsize; /* initialized data " " */
33 unsigned long bsize; /* uninitialized data " " */
34 unsigned long entry; /* entry pt. */
35 unsigned long text_start; /* base of text used for this file */
36 unsigned long data_start; /* base of data used for this file */
37 unsigned long tagentries; /* number of tag entries to follow */
38} ;
39
40/********************** STORAGE CLASSES **********************/
41
42#define C_EFCN -1 /* physical end of function */
43#define C_NULL 0
44#define C_AUTO 1 /* automatic variable */
45#define C_EXT 2 /* external symbol */
46#define C_STAT 3 /* static */
47#define C_REG 4 /* register variable */
48#define C_EXTDEF 5 /* external definition */
49#define C_LABEL 6 /* label */
50#define C_ULABEL 7 /* undefined label */
51#define C_MOS 8 /* member of structure */
52#define C_ARG 9 /* function argument */
53#define C_STRTAG 10 /* structure tag */
54#define C_MOU 11 /* member of union */
55#define C_UNTAG 12 /* union tag */
56#define C_TPDEF 13 /* type definition */
57#define C_USTATIC 14 /* undefined static */
58#define C_ENTAG 15 /* enumeration tag */
59#define C_MOE 16 /* member of enumeration */
60#define C_REGPARM 17 /* register parameter */
61#define C_FIELD 18 /* bit field */
62#define C_AUTOARG 19 /* auto argument */
63#define C_LASTENT 20 /* dummy entry (end of block) */
64#define C_BLOCK 100 /* ".bb" or ".eb" */
65#define C_FCN 101 /* ".bf" or ".ef" */
66#define C_EOS 102 /* end of structure */
67#define C_FILE 103 /* file name */
68#define C_LINE 104 /* line # reformatted as symbol table entry */
69#define C_ALIAS 105 /* duplicate tag */
70#define C_HIDDEN 106 /* ext symbol in dmert public lib */
71
72 /* New storage classes for 80960 */
73
74/* C_LEAFPROC is obsolete. Use C_LEAFEXT or C_LEAFSTAT */
75#define C_LEAFPROC 108 /* Leaf procedure, "call" via BAL */
76
77#define C_SCALL 107 /* Procedure reachable via system call */
78#define C_LEAFEXT 108 /* External leaf */
79#define C_LEAFSTAT 113 /* Static leaf */
80#define C_OPTVAR 109 /* Optimized variable */
81#define C_DEFINE 110 /* Preprocessor #define */
82#define C_PRAGMA 111 /* Advice to compiler or linker */
83#define C_SEGMENT 112 /* 80960 segment name */
84
85/********************** SECTION HEADER **********************/
86struct internal_scnhdr {
87 char s_name[8]; /* section name */
88 long s_paddr; /* physical address, aliased s_nlib */
89 long s_vaddr; /* virtual address */
90 long s_size; /* section size */
91 long s_scnptr; /* file ptr to raw data for section */
92 long s_relptr; /* file ptr to relocation */
93 long s_lnnoptr; /* file ptr to line numbers */
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94#ifdef M88
95 unsigned long s_nreloc;
96 unsigned long s_nlnno;
97#else
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98 unsigned short s_nreloc; /* number of relocation entries */
99 unsigned short s_nlnno; /* number of line number entries*/
a737c70b 100#endif
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101 long s_flags; /* flags */
102#ifdef I960
103 long s_align;
104#endif
105};
106
107
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108/*
109 * s_flags "type"
110 */
111#define STYP_REG (0x0000) /* "regular": allocated, relocated, loaded */
112#define STYP_DSECT (0x0001) /* "dummy": relocated only*/
113#define STYP_NOLOAD (0x0002) /* "noload": allocated, relocated, not loaded */
114#define STYP_GROUP (0x0004) /* "grouped": formed of input sections */
115#define STYP_PAD (0x0008) /* "padding": not allocated, not relocated, loaded */
116#define STYP_COPY (0x0010) /* "copy": for decision function used by field update; not allocated, not relocated,
117 loaded; reloc & lineno entries processed normally */
118#define STYP_TEXT (0x0020) /* section contains text only */
119#define S_SHRSEG (0x0020) /* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile
120 will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will
121 update all process invocations. */
122#define STYP_DATA (0x0040) /* section contains data only */
123#define STYP_BSS (0x0080) /* section contains bss only */
124#define S_NEWFCN (0x0100) /* In a minimal file or an update file, a new function (as compared with a replaced function) */
125#define STYP_INFO (0x0200) /* comment: not allocated not relocated, not loaded */
126#define STYP_OVER (0x0400) /* overlay: relocated not allocated or loaded */
127#define STYP_LIB (0x0800) /* for .lib: same as INFO */
128#define STYP_MERGE (0x2000) /* merge section -- combines with text, data or bss sections only */
129#define STYP_REVERSE_PAD (0x4000) /* section will be padded with no-op instructions wherever padding is necessary and there is a
130 word of contiguous bytes beginning on a word boundary. */
131/********************** LINE NUMBERS **********************/
132
133/* 1 line number entry for every "breakpointable" source line in a section.
134 * Line numbers are grouped on a per function basis; first entry in a function
135 * grouping will have l_lnno = 0 and in place of physical address will be the
136 * symbol table index of the function name.
137 */
138
139struct internal_lineno {
140 union {
141 long l_symndx; /* function name symbol index, iff l_lnno == 0*/
142 long l_paddr; /* (physical) address of line number */
143 } l_addr;
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144#ifdef M88
145 unsigned long l_lnno; /* line number */
146#else
42e15245 147 unsigned short l_lnno; /* line number */
a737c70b 148#endif
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149};
150
50651e5e 151
42e15245 152/********************** SYMBOLS **********************/
50651e5e 153
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154#define SYMNMLEN 8 /* # characters in a symbol name */
155#define FILNMLEN 14 /* # characters in a file name */
156#define DIMNUM 4 /* # array dimensions in auxiliary entry */
157
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158struct internal_syment {
159 union {
160 char _n_name[SYMNMLEN]; /* old COFF version */
161 struct {
162 long _n_zeroes; /* new == 0 */
163 long _n_offset; /* offset into string table */
164 } _n_n;
165 char *_n_nptr[2]; /* allows for overlaying */
166 } _n;
167 long n_value; /* value of symbol */
168 short n_scnum; /* section number */
169 unsigned short n_flags; /* copy of flags from filhdr */
170 unsigned short n_type; /* type and derived type */
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171#if __STDC__
172 signed
173#endif
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174 char n_sclass; /* storage class */
175 char n_numaux; /* number of aux. entries */
176};
177
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178/* Relocatable symbols have number of the section in which they are defined,
179 or one of the following: */
180
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181#define N_UNDEF ((short)0) /* undefined symbol */
182#define N_ABS ((short)-1) /* value of symbol is absolute */
183#define N_DEBUG ((short)-2) /* debugging symbol -- value is meaningless */
184#define N_TV ((short)-3) /* indicates symbol needs preload transfer vector */
185#define P_TV ((short)-4) /* indicates symbol needs postload transfer vector*/
186
187/*
188 * Type of a symbol, in low N bits of the word
189 */
190#define T_NULL 0
191#define T_VOID 1 /* function argument (only used by compiler) */
192#define T_CHAR 2 /* character */
193#define T_SHORT 3 /* short integer */
194#define T_INT 4 /* integer */
195#define T_LONG 5 /* long integer */
196#define T_FLOAT 6 /* floating point */
197#define T_DOUBLE 7 /* double word */
198#define T_STRUCT 8 /* structure */
199#define T_UNION 9 /* union */
200#define T_ENUM 10 /* enumeration */
201#define T_MOE 11 /* member of enumeration*/
202#define T_UCHAR 12 /* unsigned character */
203#define T_USHORT 13 /* unsigned short */
204#define T_UINT 14 /* unsigned integer */
205#define T_ULONG 15 /* unsigned long */
206#define T_LNGDBL 16 /* long double */
207
208/*
209 * derived types, in n_type
210*/
211#define DT_NON (0) /* no derived type */
212#define DT_PTR (1) /* pointer */
213#define DT_FCN (2) /* function */
214#define DT_ARY (3) /* array */
215
216#define BTYPE(x) ((x) & N_BTMASK)
217
218#define ISPTR(x) (((x) & N_TMASK) == (DT_PTR << N_BTSHFT))
219#define ISFCN(x) (((x) & N_TMASK) == (DT_FCN << N_BTSHFT))
220#define ISARY(x) (((x) & N_TMASK) == (DT_ARY << N_BTSHFT))
221#define ISTAG(x) ((x)==C_STRTAG||(x)==C_UNTAG||(x)==C_ENTAG)
222#define DECREF(x) ((((x)>>N_TSHIFT)&~N_BTMASK)|((x)&N_BTMASK))
223
224
225union internal_auxent
226{
227 struct {
228 union {
229 long l; /* str, un, or enum tag indx */
230 struct coff_ptr_struct *p;
231 } x_tagndx;
232
233 union {
234 struct {
235 unsigned short x_lnno; /* declaration line number */
236 unsigned short x_size; /* str/union/array size */
237 } x_lnsz;
238 long x_fsize; /* size of function */
239 } x_misc;
240 union {
241
242 struct { /* if ISFCN, tag, or .bb */
243 long x_lnnoptr; /* ptr to fcn line # */
244 union { /* entry ndx past block end */
245 long l;
246 struct coff_ptr_struct *p;
247
248 } x_endndx;
249
250
251 } x_fcn;
252 struct { /* if ISARY, up to 4 dimen. */
253 unsigned short x_dimen[DIMNUM];
254 } x_ary;
255 } x_fcnary;
256 unsigned short x_tvndx; /* tv index */
257 } x_sym;
258
259 union {
260 char x_fname[FILNMLEN];
261 struct {
262 long x_zeroes;
263 long x_offset;
264 } x_n;
265 } x_file;
266
267 struct {
268 long x_scnlen; /* section length */
269 unsigned short x_nreloc; /* # relocation entries */
270 unsigned short x_nlinno; /* # line numbers */
271 } x_scn;
272
273 struct {
274 long x_tvfill; /* tv fill value */
275 unsigned short x_tvlen; /* length of .tv */
276 unsigned short x_tvran[2]; /* tv range */
277 } x_tv; /* info about .tv section (in auxent of symbol .tv)) */
278
279 /******************************************
280 * I960-specific *2nd* aux. entry formats
281 ******************************************/
282 struct {
283 /* This is a very old typo that keeps getting propagated. */
284#define x_stdindx x_stindx
285 long x_stindx; /* sys. table entry */
286 } x_sc; /* system call entry */
287
288 struct {
289 unsigned long x_balntry; /* BAL entry point */
290 } x_bal; /* BAL-callable function */
291
292 struct {
293 unsigned long x_timestamp; /* time stamp */
294 char x_idstring[20]; /* producer identity string */
295 } x_ident; /* Producer ident info */
296
297
298};
299
300/********************** RELOCATION DIRECTIVES **********************/
301
302struct internal_reloc {
303 long r_vaddr; /* Virtual address of reference */
304 long r_symndx; /* Index into symbol table */
305 unsigned short r_type; /* Relocation type */
306#if M88
307 unsigned short r_offset;
308#endif
309};
310
311#define R_RELBYTE 017
312#define R_RELWORD 020
313#define R_PCRBYTE 022
314#define R_PCRWORD 023
315#define R_PCRLONG 024
316
317#define R_DIR32 06
318#define R_PCLONG 020
319#define R_RELBYTE 017
320#define R_RELWORD 020
321
322#define R_PCRBYTE 022
323#define R_PCRWORD 023
324#define R_PCRLONG 024
325
326#define R_PCR16L 128
327#define R_PCR26L 129
328#define R_VRT16 130
329#define R_HVRT16 131
330#define R_LVRT16 132
331#define R_VRT32 133
332#define R_RELLONG (0x11) /* Direct 32-bit relocation */
333#define R_IPRSHORT (0x18)
334#define R_IPRMED (0x19) /* 24-bit ip-relative relocation */
335#define R_IPRLONG (0x1a)
336#define R_OPTCALL (0x1b) /* 32-bit optimizable call (leafproc/sysproc) */
337#define R_OPTCALLX (0x1c) /* 64-bit optimizable call (leafproc/sysproc) */
338#define R_GETSEG (0x1d)
339#define R_GETPA (0x1e)
340#define R_TAGWORD (0x1f)
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