source: EcnlProtoTool/trunk/tcc-0.9.26/coff.h@ 286

Last change on this file since 286 was 279, checked in by coas-nagasima, 7 years ago

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1/**************************************************************************/
2/* COFF.H */
3/* COFF data structures and related definitions used by the linker */
4/**************************************************************************/
5
6/*------------------------------------------------------------------------*/
7/* COFF FILE HEADER */
8/*------------------------------------------------------------------------*/
9struct filehdr {
10 unsigned short f_magic; /* magic number */
11 unsigned short f_nscns; /* number of sections */
12 long f_timdat; /* time & date stamp */
13 long f_symptr; /* file pointer to symtab */
14 long f_nsyms; /* number of symtab entries */
15 unsigned short f_opthdr; /* sizeof(optional hdr) */
16 unsigned short f_flags; /* flags */
17 unsigned short f_TargetID; /* for C6x = 0x0099 */
18 };
19
20/*------------------------------------------------------------------------*/
21/* File header flags */
22/*------------------------------------------------------------------------*/
23#define F_RELFLG 0x01 /* relocation info stripped from file */
24#define F_EXEC 0x02 /* file is executable (no unresolved refs) */
25#define F_LNNO 0x04 /* line nunbers stripped from file */
26#define F_LSYMS 0x08 /* local symbols stripped from file */
27#define F_GSP10 0x10 /* 34010 version */
28#define F_GSP20 0x20 /* 34020 version */
29#define F_SWABD 0x40 /* bytes swabbed (in names) */
30#define F_AR16WR 0x80 /* byte ordering of an AR16WR (PDP-11) */
31#define F_LITTLE 0x100 /* byte ordering of an AR32WR (vax) */
32#define F_BIG 0x200 /* byte ordering of an AR32W (3B, maxi) */
33#define F_PATCH 0x400 /* contains "patch" list in optional header */
34#define F_NODF 0x400
35
36#define F_VERSION (F_GSP10 | F_GSP20)
37#define F_BYTE_ORDER (F_LITTLE | F_BIG)
38#define FILHDR struct filehdr
39
40//#define FILHSZ sizeof(FILHDR)
41#define FILHSZ 22 // above rounds to align on 4 bytes which causes problems
42
43#define COFF_C67_MAGIC 0x00c2
44
45/*------------------------------------------------------------------------*/
46/* Macros to recognize magic numbers */
47/*------------------------------------------------------------------------*/
48#define ISMAGIC(x) (((unsigned short)(x))==(unsigned short)magic)
49#define ISARCHIVE(x) ((((unsigned short)(x))==(unsigned short)ARTYPE))
50#define BADMAGIC(x) (((unsigned short)(x) & 0x8080) && !ISMAGIC(x))
51
52
53
54/*------------------------------------------------------------------------*/
55/* OPTIONAL FILE HEADER */
56/*------------------------------------------------------------------------*/
57typedef struct aouthdr {
58 short magic; /* see magic.h */
59 short vstamp; /* version stamp */
60 long tsize; /* text size in bytes, padded to FW bdry*/
61 long dsize; /* initialized data " " */
62 long bsize; /* uninitialized data " " */
63 long entrypt; /* entry pt. */
64 long text_start; /* base of text used for this file */
65 long data_start; /* base of data used for this file */
66} AOUTHDR;
67
68#define AOUTSZ sizeof(AOUTHDR)
69
70/*----------------------------------------------------------------------*/
71/* When a UNIX aout header is to be built in the optional header, */
72/* the following magic numbers can appear in that header: */
73/* */
74/* AOUT1MAGIC : default : readonly sharable text segment */
75/* AOUT2MAGIC: : writable text segment */
76/* PAGEMAGIC : : configured for paging */
77/*----------------------------------------------------------------------*/
78#define AOUT1MAGIC 0410
79#define AOUT2MAGIC 0407
80#define PAGEMAGIC 0413
81
82
83
84/*------------------------------------------------------------------------*/
85/* COMMON ARCHIVE FILE STRUCTURES */
86/* */
87/* ARCHIVE File Organization: */
88/* _______________________________________________ */
89/* |__________ARCHIVE_MAGIC_STRING_______________| */
90/* |__________ARCHIVE_FILE_MEMBER_1______________| */
91/* | | */
92/* | Archive File Header "ar_hdr" | */
93/* |.............................................| */
94/* | Member Contents | */
95/* | 1. External symbol directory | */
96/* | 2. Text file | */
97/* |_____________________________________________| */
98/* |________ARCHIVE_FILE_MEMBER_2________________| */
99/* | "ar_hdr" | */
100/* |.............................................| */
101/* | Member Contents (.o or text file) | */
102/* |_____________________________________________| */
103/* | . . . | */
104/* | . . . | */
105/* | . . . | */
106/* |_____________________________________________| */
107/* |________ARCHIVE_FILE_MEMBER_n________________| */
108/* | "ar_hdr" | */
109/* |.............................................| */
110/* | Member Contents | */
111/* |_____________________________________________| */
112/* */
113/*------------------------------------------------------------------------*/
114
115#define COFF_ARMAG "!<arch>\n"
116#define SARMAG 8
117#define ARFMAG "`\n"
118
119struct ar_hdr /* archive file member header - printable ascii */
120{
121 char ar_name[16]; /* file member name - `/' terminated */
122 char ar_date[12]; /* file member date - decimal */
123 char ar_uid[6]; /* file member user id - decimal */
124 char ar_gid[6]; /* file member group id - decimal */
125 char ar_mode[8]; /* file member mode - octal */
126 char ar_size[10]; /* file member size - decimal */
127 char ar_fmag[2]; /* ARFMAG - string to end header */
128};
129
130
131
132/*------------------------------------------------------------------------*/
133/* SECTION HEADER */
134/*------------------------------------------------------------------------*/
135struct scnhdr {
136 char s_name[8]; /* section name */
137 long s_paddr; /* physical address */
138 long s_vaddr; /* virtual address */
139 long s_size; /* section size */
140 long s_scnptr; /* file ptr to raw data for section */
141 long s_relptr; /* file ptr to relocation */
142 long s_lnnoptr; /* file ptr to line numbers */
143 unsigned int s_nreloc; /* number of relocation entries */
144 unsigned int s_nlnno; /* number of line number entries */
145 unsigned int s_flags; /* flags */
146 unsigned short s_reserved; /* reserved byte */
147 unsigned short s_page; /* memory page id */
148 };
149
150#define SCNHDR struct scnhdr
151#define SCNHSZ sizeof(SCNHDR)
152
153/*------------------------------------------------------------------------*/
154/* Define constants for names of "special" sections */
155/*------------------------------------------------------------------------*/
156//#define _TEXT ".text"
157#define _DATA ".data"
158#define _BSS ".bss"
159#define _CINIT ".cinit"
160#define _TV ".tv"
161
162/*------------------------------------------------------------------------*/
163/* The low 4 bits of s_flags is used as a section "type" */
164/*------------------------------------------------------------------------*/
165#define STYP_REG 0x00 /* "regular" : allocated, relocated, loaded */
166#define STYP_DSECT 0x01 /* "dummy" : not allocated, relocated, not loaded */
167#define STYP_NOLOAD 0x02 /* "noload" : allocated, relocated, not loaded */
168#define STYP_GROUP 0x04 /* "grouped" : formed of input sections */
169#define STYP_PAD 0x08 /* "padding" : not allocated, not relocated, loaded */
170#define STYP_COPY 0x10 /* "copy" : used for C init tables -
171 not allocated, relocated,
172 loaded; reloc & lineno
173 entries processed normally */
174#define STYP_TEXT 0x20 /* section contains text only */
175#define STYP_DATA 0x40 /* section contains data only */
176#define STYP_BSS 0x80 /* section contains bss only */
177
178#define STYP_ALIGN 0x100 /* align flag passed by old version assemblers */
179#define ALIGN_MASK 0x0F00 /* part of s_flags that is used for align vals */
180#define ALIGNSIZE(x) (1 << ((x & ALIGN_MASK) >> 8))
181
182
183
184/*------------------------------------------------------------------------*/
185/* RELOCATION ENTRIES */
186/*------------------------------------------------------------------------*/
187struct reloc
188{
189 long r_vaddr; /* (virtual) address of reference */
190 short r_symndx; /* index into symbol table */
191 unsigned short r_disp; /* additional bits for address calculation */
192 unsigned short r_type; /* relocation type */
193};
194
195#define RELOC struct reloc
196#define RELSZ 10 /* sizeof(RELOC) */
197
198/*--------------------------------------------------------------------------*/
199/* define all relocation types */
200/*--------------------------------------------------------------------------*/
201
202#define R_ABS 0 /* absolute address - no relocation */
203#define R_DIR16 01 /* UNUSED */
204#define R_REL16 02 /* UNUSED */
205#define R_DIR24 04 /* UNUSED */
206#define R_REL24 05 /* 24 bits, direct */
207#define R_DIR32 06 /* UNUSED */
208#define R_RELBYTE 017 /* 8 bits, direct */
209#define R_RELWORD 020 /* 16 bits, direct */
210#define R_RELLONG 021 /* 32 bits, direct */
211#define R_PCRBYTE 022 /* 8 bits, PC-relative */
212#define R_PCRWORD 023 /* 16 bits, PC-relative */
213#define R_PCRLONG 024 /* 32 bits, PC-relative */
214#define R_OCRLONG 030 /* GSP: 32 bits, one's complement direct */
215#define R_GSPPCR16 031 /* GSP: 16 bits, PC relative (in words) */
216#define R_GSPOPR32 032 /* GSP: 32 bits, direct big-endian */
217#define R_PARTLS16 040 /* Brahma: 16 bit offset of 24 bit address*/
218#define R_PARTMS8 041 /* Brahma: 8 bit page of 24 bit address */
219#define R_PARTLS7 050 /* DSP: 7 bit offset of 16 bit address */
220#define R_PARTMS9 051 /* DSP: 9 bit page of 16 bit address */
221#define R_REL13 052 /* DSP: 13 bits, direct */
222
223
224
225/*------------------------------------------------------------------------*/
226/* LINE NUMBER ENTRIES */
227/*------------------------------------------------------------------------*/
228struct lineno
229{
230 union
231 {
232 long l_symndx ; /* sym. table index of function name
233 iff l_lnno == 0 */
234 long l_paddr ; /* (physical) address of line number */
235 } l_addr ;
236 unsigned short l_lnno ; /* line number */
237};
238
239#define LINENO struct lineno
240#define LINESZ 6 /* sizeof(LINENO) */
241
242
243
244/*------------------------------------------------------------------------*/
245/* STORAGE CLASSES */
246/*------------------------------------------------------------------------*/
247#define C_EFCN -1 /* physical end of function */
248#define C_NULL 0
249#define C_AUTO 1 /* automatic variable */
250#define C_EXT 2 /* external symbol */
251#define C_STAT 3 /* static */
252#define C_REG 4 /* register variable */
253#define C_EXTDEF 5 /* external definition */
254#define C_LABEL 6 /* label */
255#define C_ULABEL 7 /* undefined label */
256#define C_MOS 8 /* member of structure */
257#define C_ARG 9 /* function argument */
258#define C_STRTAG 10 /* structure tag */
259#define C_MOU 11 /* member of union */
260#define C_UNTAG 12 /* union tag */
261#define C_TPDEF 13 /* type definition */
262#define C_USTATIC 14 /* undefined static */
263#define C_ENTAG 15 /* enumeration tag */
264#define C_MOE 16 /* member of enumeration */
265#define C_REGPARM 17 /* register parameter */
266#define C_FIELD 18 /* bit field */
267
268#define C_BLOCK 100 /* ".bb" or ".eb" */
269#define C_FCN 101 /* ".bf" or ".ef" */
270#define C_EOS 102 /* end of structure */
271#define C_FILE 103 /* file name */
272#define C_LINE 104 /* dummy sclass for line number entry */
273#define C_ALIAS 105 /* duplicate tag */
274#define C_HIDDEN 106 /* special storage class for external */
275 /* symbols in dmert public libraries */
276
277
278/*------------------------------------------------------------------------*/
279/* SYMBOL TABLE ENTRIES */
280/*------------------------------------------------------------------------*/
281
282#define SYMNMLEN 8 /* Number of characters in a symbol name */
283#define FILNMLEN 14 /* Number of characters in a file name */
284#define DIMNUM 4 /* Number of array dimensions in auxiliary entry */
285
286
287struct syment
288{
289 union
290 {
291 char _n_name[SYMNMLEN]; /* old COFF version */
292 struct
293 {
294 long _n_zeroes; /* new == 0 */
295 long _n_offset; /* offset into string table */
296 } _n_n;
297 char *_n_nptr[2]; /* allows for overlaying */
298 } _n;
299 long n_value; /* value of symbol */
300 short n_scnum; /* section number */
301 unsigned short n_type; /* type and derived type */
302 char n_sclass; /* storage class */
303 char n_numaux; /* number of aux. entries */
304};
305
306#define n_name _n._n_name
307#define n_nptr _n._n_nptr[1]
308#define n_zeroes _n._n_n._n_zeroes
309#define n_offset _n._n_n._n_offset
310
311/*------------------------------------------------------------------------*/
312/* Relocatable symbols have a section number of the */
313/* section in which they are defined. Otherwise, section */
314/* numbers have the following meanings: */
315/*------------------------------------------------------------------------*/
316#define N_UNDEF 0 /* undefined symbol */
317#define N_ABS -1 /* value of symbol is absolute */
318#define N_DEBUG -2 /* special debugging symbol */
319#define N_TV (unsigned short)-3 /* needs transfer vector (preload) */
320#define P_TV (unsigned short)-4 /* needs transfer vector (postload) */
321
322
323
324/*------------------------------------------------------------------------*/
325/* The fundamental type of a symbol packed into the low */
326/* 4 bits of the word. */
327/*------------------------------------------------------------------------*/
328#define _EF ".ef"
329
330#define T_NULL 0 /* no type info */
331#define T_ARG 1 /* function argument (only used by compiler) */
332#define T_CHAR 2 /* character */
333#define T_SHORT 3 /* short integer */
334#define T_INT 4 /* integer */
335#define T_LONG 5 /* long integer */
336#define T_FLOAT 6 /* floating point */
337#define T_DOUBLE 7 /* double word */
338#define T_STRUCT 8 /* structure */
339#define T_UNION 9 /* union */
340#define T_ENUM 10 /* enumeration */
341#define T_MOE 11 /* member of enumeration */
342#define T_UCHAR 12 /* unsigned character */
343#define T_USHORT 13 /* unsigned short */
344#define T_UINT 14 /* unsigned integer */
345#define T_ULONG 15 /* unsigned long */
346
347/*------------------------------------------------------------------------*/
348/* derived types are: */
349/*------------------------------------------------------------------------*/
350#define DT_NON 0 /* no derived type */
351#define DT_PTR 1 /* pointer */
352#define DT_FCN 2 /* function */
353#define DT_ARY 3 /* array */
354
355#define MKTYPE(basic, d1,d2,d3,d4,d5,d6) \
356 ((basic) | ((d1) << 4) | ((d2) << 6) | ((d3) << 8) |\
357 ((d4) << 10) | ((d5) << 12) | ((d6) << 14))
358
359/*------------------------------------------------------------------------*/
360/* type packing constants and macros */
361/*------------------------------------------------------------------------*/
362#define N_BTMASK_COFF 017
363#define N_TMASK_COFF 060
364#define N_TMASK1_COFF 0300
365#define N_TMASK2_COFF 0360
366#define N_BTSHFT_COFF 4
367#define N_TSHIFT_COFF 2
368
369#define BTYPE_COFF(x) ((x) & N_BTMASK_COFF)
370#define ISINT(x) (((x) >= T_CHAR && (x) <= T_LONG) || \
371 ((x) >= T_UCHAR && (x) <= T_ULONG) || (x) == T_ENUM)
372#define ISFLT_COFF(x) ((x) == T_DOUBLE || (x) == T_FLOAT)
373#define ISPTR_COFF(x) (((x) & N_TMASK_COFF) == (DT_PTR << N_BTSHFT_COFF))
374#define ISFCN_COFF(x) (((x) & N_TMASK_COFF) == (DT_FCN << N_BTSHFT_COFF))
375#define ISARY_COFF(x) (((x) & N_TMASK_COFF) == (DT_ARY << N_BTSHFT_COFF))
376#define ISTAG_COFF(x) ((x)==C_STRTAG || (x)==C_UNTAG || (x)==C_ENTAG)
377
378#define INCREF_COFF(x) ((((x)&~N_BTMASK_COFF)<<N_TSHIFT_COFF)|(DT_PTR<<N_BTSHFT_COFF)|(x&N_BTMASK_COFF))
379#define DECREF_COFF(x) ((((x)>>N_TSHIFT_COFF)&~N_BTMASK_COFF)|((x)&N_BTMASK_COFF))
380
381
382
383/*------------------------------------------------------------------------*/
384/* AUXILIARY SYMBOL ENTRY */
385/*------------------------------------------------------------------------*/
386union auxent
387{
388 struct
389 {
390 long x_tagndx; /* str, un, or enum tag indx */
391 union
392 {
393 struct
394 {
395 unsigned short x_lnno; /* declaration line number */
396 unsigned short x_size; /* str, union, array size */
397 } x_lnsz;
398 long x_fsize; /* size of function */
399 } x_misc;
400 union
401 {
402 struct /* if ISFCN, tag, or .bb */
403 {
404 long x_lnnoptr; /* ptr to fcn line # */
405 long x_endndx; /* entry ndx past block end */
406 } x_fcn;
407 struct /* if ISARY, up to 4 dimen. */
408 {
409 unsigned short x_dimen[DIMNUM];
410 } x_ary;
411 } x_fcnary;
412 unsigned short x_regcount; /* number of registers used by func */
413 } x_sym;
414 struct
415 {
416 char x_fname[FILNMLEN];
417 } x_file;
418 struct
419 {
420 long x_scnlen; /* section length */
421 unsigned short x_nreloc; /* number of relocation entries */
422 unsigned short x_nlinno; /* number of line numbers */
423 } x_scn;
424};
425
426#define SYMENT struct syment
427#define SYMESZ 18 /* sizeof(SYMENT) */
428
429#define AUXENT union auxent
430#define AUXESZ 18 /* sizeof(AUXENT) */
431
432/*------------------------------------------------------------------------*/
433/* NAMES OF "SPECIAL" SYMBOLS */
434/*------------------------------------------------------------------------*/
435#define _STEXT ".text"
436#define _ETEXT "etext"
437#define _SDATA ".data"
438#define _EDATA "edata"
439#define _SBSS ".bss"
440#define _END "end"
441#define _CINITPTR "cinit"
442
443/*--------------------------------------------------------------------------*/
444/* ENTRY POINT SYMBOLS */
445/*--------------------------------------------------------------------------*/
446#define _START "_start"
447#define _MAIN "_main"
448 /* _CSTART "_c_int00" (defined in params.h) */
449
450
451#define _TVORIG "_tvorig"
452#define _TORIGIN "_torigin"
453#define _DORIGIN "_dorigin"
454
455#define _SORIGIN "_sorigin"
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