Commit | Line | Data |
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f70ab843 RH |
1 | /* |
2 | * Copyright (c) 1982 Regents of the University of California | |
056a1357 | 3 | * @(#)as.h 4.11 %G% |
f70ab843 | 4 | */ |
8c1020c4 BJ |
5 | #ifdef VMS |
6 | # define vax 1 | |
7 | # define VAX 1 | |
8 | #endif VMS | |
9 | ||
f70ab843 RH |
10 | #define reg register |
11 | ||
451260e7 RH |
12 | #include <sys/types.h> |
13 | #ifdef UNIX | |
14 | ||
15 | #ifdef FLEXNAMES | |
16 | # include <a.out.h> | |
17 | # include <stab.h> | |
18 | #else not FLEXNAMES | |
0c940099 RH |
19 | # define ONLIST |
20 | # include "a.out.h" | |
451260e7 RH |
21 | # include <stab.h> |
22 | #endif FLEXNAMES | |
23 | ||
24 | #endif UNIX | |
25 | #ifdef VMS | |
26 | ||
27 | #ifdef UNIXDEVEL | |
28 | # include <a.out.h> | |
29 | #else not UNIXDEVEL | |
30 | # include <aout.h> | |
31 | #endif not UNIXDEVEL | |
32 | ||
33 | #endif VMS | |
8c1020c4 | 34 | |
451260e7 | 35 | #define readonly |
8c1020c4 BJ |
36 | #define NINST 300 |
37 | ||
38 | #define NEXP 20 /* max number of expr. terms per instruction */ | |
39 | #define NARG 6 /* max number of args per instruction */ | |
40 | #define NHASH 1103 /* hash table is dynamically extended */ | |
6cca131f | 41 | #define TNAMESIZE 32 /* maximum length of temporary file names */ |
8c1020c4 BJ |
42 | #define NLOC 4 /* number of location ctrs */ |
43 | ||
44 | #ifdef UNIX | |
45 | # ifndef FLEXNAMES | |
46 | # ifndef NCPS | |
47 | # define NCPS 8 /* number of characters per symbol*/ | |
48 | # endif | |
49 | # else | |
50 | # ifdef NCPS | |
51 | # undef NCPS | |
52 | # endif | |
6dd84c64 | 53 | # define NCPS 4096 /* needed to allocate yytext */ |
8c1020c4 BJ |
54 | # endif |
55 | # endif UNIX | |
56 | ||
57 | # ifdef VMS | |
58 | # ifdef NCPS | |
59 | # undef NCPS | |
60 | # endif NCPS | |
61 | # define NCPS 15 | |
62 | # endif VMS | |
63 | ||
64 | /* | |
65 | * Symbol types | |
66 | */ | |
67 | #define XUNDEF 0x0 | |
68 | #define XABS 0x2 | |
69 | #define XTEXT 0x4 | |
70 | #define XDATA 0x6 | |
71 | #define XBSS 0x8 | |
72 | ||
73 | #define XXTRN 0x1 | |
74 | #define XTYPE 0x1E | |
75 | ||
76 | #define XFORW 0x20 /* Was forward-referenced when undefined */ | |
77 | ||
78 | #define ERR (-1) | |
79 | #define NBPW 32 /* Bits per word */ | |
80 | ||
81 | #define AMASK 017 | |
82 | ||
83 | /* | |
84 | * Actual argument syntax types | |
85 | */ | |
6cca131f RH |
86 | #define AREG 1 /* %r */ |
87 | #define ABASE 2 /* (%r) */ | |
88 | #define ADECR 3 /* -(%r) */ | |
89 | #define AINCR 4 /* (%r)+ */ | |
90 | #define ADISP 5 /* expr(%r) */ | |
91 | #define AEXP 6 /* expr */ | |
92 | #define AIMM 7 /* $ expr */ | |
93 | #define ASTAR 8 /* * */ | |
94 | #define AINDX 16 /* [%r] */ | |
8c1020c4 | 95 | /* |
f70ab843 | 96 | * Definitions for the things found in ``instrs'' |
8c1020c4 | 97 | */ |
f70ab843 RH |
98 | #define INSTTAB 1 |
99 | #include "instrs.h" | |
8c1020c4 BJ |
100 | |
101 | /* | |
f70ab843 RH |
102 | * Tells outrel what it is relocating |
103 | * RELOC_PCREL is an implicit argument to outrel; it is or'ed in | |
104 | * with a TYPX | |
8c1020c4 | 105 | */ |
f70ab843 | 106 | #define RELOC_PCREL (1<<TYPLG) |
5b3c350a RH |
107 | /* |
108 | * reference types for loader | |
109 | */ | |
6cca131f RH |
110 | #define PCREL 1 |
111 | #define LEN1 2 | |
112 | #define LEN2 4 | |
113 | #define LEN4 6 | |
114 | #define LEN8 8 | |
f70ab843 | 115 | #define LEN16 10 |
5b3c350a RH |
116 | |
117 | extern int reflen[]; /* {LEN*+PCREL} ==> number of bytes */ | |
118 | extern int lgreflen[]; /* {LEN*+PCREL} ==> lg number of bytes */ | |
f70ab843 RH |
119 | extern int len124[]; /* {1,2,4,8,16} ==> {LEN1, LEN2, LEN4, LEN8} */ |
120 | extern char mod124[]; /* {1,2,4,8,16} ==> {bits to construct operands */ | |
121 | extern int type_124[]; /* {1,2,4,8,16} ==> {TYPB,TYPW,TYPL,TYPQ,TYPO} */ | |
122 | extern int ty_NORELOC[]; /* {TYPB..TYPH} ==> {1 if relocation not OK */ | |
123 | extern int ty_float[]; /* {TYPB..TYPH} ==> {1 if floating number */ | |
124 | extern int ty_LEN[]; /* {TYPB..TYPH} ==> {LEN1..LEN16} */ | |
125 | extern int ty_nbyte[]; /* {TYPB..TYPH} ==> {1,2,4,8,16} */ | |
126 | extern int ty_nlg[]; /* {TYPB..TYPH} ==> lg{1,2,4,8,16} */ | |
127 | extern char *ty_string[]; /* {TYPB..TYPH} ==> printable */ | |
8c1020c4 BJ |
128 | |
129 | #define TMPC 7 | |
f70ab843 RH |
130 | #define HW 0x1 |
131 | #define FW 0x3 | |
132 | #define DW 0x7 | |
133 | #define OW 0xF | |
8c1020c4 BJ |
134 | |
135 | #ifdef UNIX | |
136 | # include <pagsiz.h> | |
137 | #endif UNIX | |
138 | ||
139 | #ifdef VMS | |
140 | # define PAGRND 0x1FFL | |
141 | #endif VMS | |
142 | ||
143 | #define round(x,y) (((x)+(y)) & ~(y)) | |
144 | ||
145 | #define STABTYPS 0340 | |
6cca131f | 146 | #define STABFLAG 0200 |
8c1020c4 BJ |
147 | |
148 | /* | |
149 | * Follows are the definitions for the symbol table tags, which are | |
150 | * all unsigned characters.. | |
151 | * High value tags are generated by the asembler for internal | |
152 | * use. | |
153 | * Low valued tags are the parser coded tokens the scanner returns. | |
154 | * There are several pertinant bounds in this ordering: | |
155 | * a) Symbols greater than JXQUESTIONABLE | |
156 | * are used by the jxxx bumper, indicating that | |
157 | * the symbol table entry is a jxxx entry | |
158 | * that has yet to be bumped. | |
159 | * b) Symbols greater than IGNOREBOUND are not | |
160 | * bequeathed to the loader; they are truly | |
161 | * for assembler internal use only. | |
162 | * c) Symbols greater than OKTOBUMP represent | |
163 | * indices into the program text that should | |
164 | * be changed in preceeding jumps or aligns | |
165 | * must get turned into their long form. | |
166 | */ | |
167 | ||
6cca131f | 168 | #define TAGMASK 0xFF |
8c1020c4 BJ |
169 | |
170 | # define JXACTIVE 0xFF /*jxxx size unknown*/ | |
171 | # define JXNOTYET 0xFE /*jxxx size known, but not yet expanded*/ | |
172 | # define JXALIGN 0xFD /*align jxxx entry*/ | |
173 | # define JXINACTIVE 0xFC /*jxxx size known and expanded*/ | |
174 | ||
6cca131f | 175 | #define JXQUESTIONABLE 0xFB |
8c1020c4 BJ |
176 | |
177 | # define JXTUNNEL 0xFA /*jxxx that jumps to another*/ | |
178 | # define OBSOLETE 0xF9 /*erroneously entered symbol*/ | |
179 | ||
180 | #define IGNOREBOUND 0xF8 /*symbols greater than this are ignored*/ | |
181 | # define STABFLOATING 0xF7 | |
182 | # define LABELID 0xF6 | |
183 | ||
184 | #define OKTOBUMP 0xF5 | |
185 | # define STABFIXED 0xF4 | |
186 | ||
187 | /* | |
188 | * astoks.h contains reserved word codings the parser should | |
189 | * know about | |
190 | */ | |
191 | #include "astoks.h" | |
192 | ||
193 | /* | |
194 | * The structure for one symbol table entry. | |
195 | * Symbol table entries are used for both user defined symbols, | |
196 | * and symbol slots generated to create the jxxx jump from | |
197 | * slots. | |
451260e7 RH |
198 | * Caution: the instructions are stored in a shorter version |
199 | * of the struct symtab, using all fields in sym_nm and | |
200 | * tag. The fields used in sym_nm are carefully redeclared | |
201 | * in struct Instab and struct instab (see below). | |
202 | * If struct nlist gets changed, then Instab and instab may | |
203 | * have to be changed. | |
8c1020c4 BJ |
204 | */ |
205 | ||
8c1020c4 | 206 | struct symtab{ |
451260e7 RH |
207 | struct nlist s_nm; |
208 | u_char s_tag; /* assembler tag */ | |
209 | u_char s_ptype; /* if tag == NAME */ | |
210 | u_char s_jxoveralign; /* if a JXXX, jumped over align */ | |
211 | short s_index; /* which segment */ | |
212 | struct symtab *s_dest; /* if JXXX, where going to */ | |
8c1020c4 | 213 | #ifdef DJXXX |
451260e7 | 214 | short s_jxline; /* source line of the jump from */ |
8c1020c4 BJ |
215 | #endif |
216 | }; | |
451260e7 RH |
217 | /* |
218 | * Redefinitions of the fields in symtab for | |
219 | * use when the symbol table entry marks a jxxx instruction. | |
220 | */ | |
221 | #define s_jxbump s_ptype /* tag == JX..., how far to expand */ | |
222 | #define s_jxfear s_desc /* how far needs to be bumped */ | |
223 | /* | |
224 | * Redefinitions of fields in the struct nlist for symbols so that | |
225 | * one saves typing, and so that they conform | |
226 | * with the old naming conventions. | |
227 | */ | |
228 | #ifdef FLEXNAMES | |
229 | #define s_name s_nm.n_un.n_name /* name pointer */ | |
230 | #define s_nmx s_nm.n_un.n_strx /* string table index */ | |
231 | #else not FLEXNAMES | |
232 | #define s_name s_nm.n_name | |
233 | #endif | |
234 | #define s_type s_nm.n_type /* type of the symbol */ | |
235 | #define s_other s_nm.n_other /* other information for sdb */ | |
236 | #define s_desc s_nm.n_desc /* type descriptor */ | |
237 | #define s_value s_nm.n_value /* value of the symbol, or sdb delta */ | |
238 | ||
239 | struct instab{ | |
240 | struct nlist s_nm; /* instruction name, type (opcode) */ | |
241 | u_char s_tag; | |
f70ab843 RH |
242 | u_char s_eopcode; |
243 | char s_pad[2]; /* round to 20 bytes */ | |
8c1020c4 | 244 | }; |
f70ab843 | 245 | typedef struct instab *Iptr; |
451260e7 RH |
246 | /* |
247 | * The fields nm.n_desc and nm.n_value total 6 bytes; this is | |
248 | * just enough for the 6 bytes describing the argument types. | |
249 | * We use a macro to define access to these 6 bytes, assuming that | |
250 | * they are allocated adjacently. | |
251 | * IF THE FORMAT OF STRUCT nlist CHANGES, THESE MAY HAVE TO BE CHANGED. | |
252 | * | |
0c940099 | 253 | * Instab is cleverly declared to look very much like the combination of |
451260e7 RH |
254 | * a struct symtab and a struct nlist. |
255 | */ | |
f70ab843 RH |
256 | /* |
257 | * With the 1981 VAX architecture reference manual, | |
258 | * DEC defined and named two byte opcodes. | |
259 | * In addition, DEC defined four new one byte instructions for | |
260 | * queue manipulation. | |
261 | * The assembler was patched in 1982 to reflect this change. | |
262 | * | |
263 | * The two byte opcodes are preceded with an escape byte | |
264 | * (usually an ESCD) and an opcode byte. | |
265 | * For one byte opcodes, the opcode is called the primary opcode. | |
266 | * For two byte opcodes, the second opcode is called the primary opcode. | |
267 | * | |
268 | * We store the primary opcode in I_popcode, | |
269 | * and the escape opcode in I_eopcode. | |
270 | * | |
271 | * For one byte opcodes in the basic arhitecture, | |
272 | * I_eopcode is CORE | |
273 | * For one byte opcodes in the new architecture definition, | |
274 | * I_eopcode is NEW | |
275 | * For the two byte opcodes, I_eopcode is the escape byte. | |
276 | * | |
277 | * The assembler checks if a NEW or two byte opcode is used, | |
278 | * and issues a warning diagnostic. | |
279 | */ | |
280 | /* | |
281 | * For upward compatability reasons, we can't have the two opcodes | |
282 | * forming an operator specifier byte(s) be physically adjacent | |
283 | * in the instruction table. | |
284 | * We define a structure and a constructor that is used in | |
285 | * the instruction generator. | |
286 | */ | |
287 | struct Opcode{ | |
288 | u_char Op_eopcode; | |
289 | u_char Op_popcode; | |
290 | }; | |
291 | ||
292 | #define BADPOINT 0xAAAAAAAA | |
293 | /* | |
294 | * See if a structured opcode is bad | |
295 | */ | |
296 | #define ITABCHECK(o) ((itab[o.Op_eopcode] != (Iptr*)BADPOINT) && (itab[o.Op_eopcode][o.Op_popcode] != (Iptr)BADPOINT)) | |
297 | /* | |
298 | * Index the itab by a structured opcode | |
299 | */ | |
300 | #define ITABFETCH(o) itab[o.Op_eopcode][o.Op_popcode] | |
301 | ||
451260e7 RH |
302 | struct Instab{ |
303 | #ifdef FLEXNAMES | |
304 | char *I_name; | |
305 | #else not FLEXNAMES | |
306 | char I_name[NCPS]; | |
307 | #endif | |
f70ab843 | 308 | u_char I_popcode; /* basic op code */ |
451260e7 RH |
309 | char I_nargs; |
310 | char I_args[6]; | |
311 | u_char I_s_tag; | |
f70ab843 RH |
312 | u_char I_eopcode; |
313 | char I_pad[2]; /* round to 20 bytes */ | |
451260e7 RH |
314 | }; |
315 | /* | |
316 | * Redefinitions of fields in the struct nlist for instructions so that | |
317 | * one saves typing, and conforms to the old naming conventions | |
318 | */ | |
f70ab843 RH |
319 | #define i_popcode s_nm.n_type /* use the same field as symtab.type */ |
320 | #define i_eopcode s_eopcode | |
451260e7 RH |
321 | #define i_nargs s_nm.n_other /* number of arguments */ |
322 | #define fetcharg(ptr, n) ((struct Instab *)ptr)->I_args[n] | |
8c1020c4 BJ |
323 | |
324 | struct arg { /*one argument to an instruction*/ | |
451260e7 RH |
325 | char a_atype; |
326 | char a_areg1; | |
327 | char a_areg2; | |
328 | char a_dispsize; /*usually d124, unless have B^, etc*/ | |
329 | struct exp *a_xp; | |
8c1020c4 | 330 | }; |
f70ab843 RH |
331 | /* |
332 | * Definitions for numbers and expressions. | |
333 | */ | |
334 | #include "asnumber.h" | |
8c1020c4 | 335 | struct exp { |
f70ab843 | 336 | Bignum e_number; /* 128 bits of #, plus tag */ |
451260e7 RH |
337 | char e_xtype; |
338 | char e_xloc; | |
f70ab843 | 339 | struct symtab *e_xname; |
8c1020c4 | 340 | }; |
f70ab843 | 341 | #define e_xvalue e_number.num_num.numIl_int.Il_long |
8c1020c4 | 342 | |
f70ab843 RH |
343 | #define MINLIT 0 |
344 | #define MAXLIT 63 | |
8c1020c4 | 345 | |
f70ab843 RH |
346 | #define MINBYTE -128 |
347 | #define MAXBYTE 127 | |
348 | #define MINUBYTE 0 | |
349 | #define MAXUBYTE 255 | |
8c1020c4 | 350 | |
f70ab843 RH |
351 | #define MINWORD -32768 |
352 | #define MAXWORD 32767 | |
353 | #define MINUWORD 0 | |
354 | #define MAXUWORD 65535 | |
8c1020c4 | 355 | |
f70ab843 RH |
356 | #define ISLIT(x) (((x) >= MINLIT) && ((x) <= MAXLIT)) |
357 | #define ISBYTE(x) (((x) >= MINBYTE) && ((x) <= MAXBYTE)) | |
358 | #define ISUBYTE(x) (((x) >= MINUBYTE) && ((x) <= MAXUBYTE)) | |
359 | #define ISWORD(x) (((x) >= MINWORD) && ((x) <= MAXWORD)) | |
360 | #define ISUWORD(x) (((x) >= MINUWORD) && ((x) <= MAXUWORD)) | |
8c1020c4 BJ |
361 | |
362 | extern struct arg arglist[NARG]; /*building operands in instructions*/ | |
363 | extern struct exp explist[NEXP]; /*building up a list of expressions*/ | |
364 | extern struct exp *xp; /*current free expression*/ | |
365 | /* | |
366 | * Communication between the scanner and the jxxx handlers. | |
367 | * lastnam: the last name seen on the input | |
368 | * lastjxxx: pointer to the last symbol table entry for | |
369 | * a jump from | |
370 | */ | |
371 | extern struct symtab *lastnam; | |
372 | extern struct symtab *lastjxxx; | |
373 | ||
374 | #ifdef VMS | |
451260e7 RH |
375 | extern char *vms_obj_ptr; /* object buffer pointer */ |
376 | extern char sobuf[]; /* object buffer */ | |
8c1020c4 BJ |
377 | extern int objfil; /* VMS object file descriptor */ |
378 | #endif VMS | |
379 | ||
380 | /* | |
381 | * Lgensym is used to make up funny names for local labels. | |
382 | * lgensym[i] is the current funny number to put after | |
383 | * references to if, lgensym[i]-1 is for ib. | |
384 | * genref[i] is set when the label is referenced before | |
385 | * it is defined (i.e. 2f) so that we can be sure these | |
386 | * labels are always defined to avoid weird diagnostics | |
387 | * from the loader later. | |
388 | */ | |
389 | extern int lgensym[10]; | |
390 | extern char genref[10]; | |
391 | ||
392 | extern char tmpn1[TNAMESIZE]; /* Interpass temporary */ | |
393 | extern struct exp *dotp; /* the current dot location */ | |
394 | extern int loctr; | |
395 | ||
396 | extern struct exec hdr; /* a.out header */ | |
397 | extern u_long tsize; /* total text size */ | |
398 | extern u_long dsize; /* total data size */ | |
399 | extern u_long trsize; /* total text relocation size */ | |
400 | extern u_long drsize; /* total data relocation size */ | |
401 | extern u_long datbase; /* base of the data segment */ | |
402 | /* | |
403 | * Bitoff and bitfield keep track of the packing into | |
404 | * bytes mandated by the expression syntax <expr> ':' <expr> | |
405 | */ | |
406 | extern int bitoff; | |
407 | extern long bitfield; | |
408 | ||
409 | /* | |
410 | * The lexical analyzer builds up symbols in yytext. Lookup | |
411 | * expects its argument in this buffer | |
412 | */ | |
413 | extern char yytext[NCPS+2]; /* text buffer for lexical */ | |
414 | /* | |
415 | * Variables to manage the input assembler source file | |
416 | */ | |
417 | extern int lineno; /*the line number*/ | |
418 | extern char *dotsname; /*the name of the as source*/ | |
419 | ||
420 | extern FILE *tmpfil; /* interpass communication*/ | |
421 | ||
422 | extern int passno; /* 1 or 2 */ | |
423 | ||
f70ab843 RH |
424 | extern int anyerrs; /*errors as'ing arguments*/ |
425 | extern int anywarnings; /*warnings as'ing arguments*/ | |
8c1020c4 BJ |
426 | extern int silent; /*don't mention the errors*/ |
427 | extern int savelabels; /*save labels in a.out*/ | |
428 | extern int orgwarn; /* questionable origin ? */ | |
429 | extern int useVM; /*use virtual memory temp file*/ | |
e5b9ebfb | 430 | extern int jxxxJUMP; /*use jmp instead of brw for jxxx */ |
030352e9 | 431 | extern int readonlydata; /*initialized data into text space*/ |
f70ab843 RH |
432 | extern int nGHnumbers; /* GH numbers used */ |
433 | extern int nGHopcodes; /* GH opcodes used */ | |
434 | extern int nnewopcodes; /* new opcodes used */ | |
8c1020c4 BJ |
435 | #ifdef DEBUG |
436 | extern int debug; | |
437 | extern int toktrace; | |
438 | #endif | |
439 | /* | |
440 | * Information about the instructions | |
441 | */ | |
f70ab843 | 442 | extern struct instab **itab[NINST]; /*maps opcodes to instructions*/ |
451260e7 | 443 | extern readonly struct Instab instab[]; |
8c1020c4 BJ |
444 | |
445 | extern int curlen; /*current literal storage size*/ | |
446 | extern int d124; /*current pointer storage size*/ | |
447 | ||
448 | struct symtab **lookup(); /*argument in yytext*/ | |
449 | struct symtab *symalloc(); | |
450 | ||
f70ab843 RH |
451 | char *Calloc(); |
452 | char *ClearCalloc(); | |
453 | ||
451260e7 | 454 | #define outb(val) {dotp->e_xvalue++; if (passno==2) bputc((val), (txtfil));} |
8c1020c4 | 455 | |
451260e7 | 456 | #define outs(cp, lg) dotp->e_xvalue += (lg); if (passno == 2) bwrite((cp), (lg), (txtfil)) |
8c1020c4 | 457 | |
f70ab843 RH |
458 | #ifdef UNIX |
459 | #define Outb(o) outb(o) | |
460 | #endif UNIX | |
461 | ||
462 | #ifdef VMS | |
463 | #define Outb(o) {*vms_obj_ptr++=-1;*vms_obj_ptr++=(char)o;dotp->e_xvalue+=1;} | |
464 | #endif VMS | |
465 | ||
8c1020c4 BJ |
466 | /* |
467 | * Most of the time, the argument to flushfield is a power of two constant, | |
468 | * the calculations involving it can be optimized to shifts. | |
469 | */ | |
470 | #define flushfield(n) if (bitoff != 0) Flushfield( ( (bitoff+n-1) /n ) * n) | |
471 | ||
472 | /* | |
473 | * The biobuf structure and associated routines are used to write | |
474 | * into one file at several places concurrently. Calling bopen | |
475 | * with a biobuf structure sets it up to write ``biofd'' starting | |
476 | * at the specified offset. You can then use ``bwrite'' and/or ``bputc'' | |
477 | * to stuff characters in the stream, much like ``fwrite'' and ``fputc''. | |
478 | * Calling bflush drains all the buffers and MUST be done before exit. | |
479 | */ | |
480 | struct biobuf { | |
481 | short b_nleft; /* Number free spaces left in b_buf */ | |
482 | /* Initialize to be less than BUFSIZ initially, to boundary align in file */ | |
483 | char *b_ptr; /* Next place to stuff characters */ | |
484 | char b_buf[BUFSIZ]; /* The buffer itself */ | |
485 | off_t b_off; /* Current file offset */ | |
486 | struct biobuf *b_link; /* Link in chain for bflush() */ | |
487 | }; | |
488 | #define bputc(c,b) ((b)->b_nleft ? (--(b)->b_nleft, *(b)->b_ptr++ = (c)) \ | |
489 | : bflushc(b, c)) | |
490 | #define BFILE struct biobuf | |
491 | ||
492 | extern BFILE *biobufs; /* head of the block I/O buffer chain */ | |
493 | extern int biofd; /* file descriptor for block I/O file */ | |
494 | extern off_t boffset; /* physical position in logical file */ | |
495 | ||
496 | /* | |
497 | * For each of the named .text .data segments | |
498 | * (introduced by .text <expr>), we maintain | |
499 | * the current value of the dot, and the BFILE where | |
500 | * the information for each of the segments is placed | |
501 | * during the second pass. | |
502 | */ | |
503 | extern struct exp usedot[NLOC + NLOC]; | |
504 | extern BFILE *usefile[NLOC + NLOC]; | |
505 | extern BFILE *txtfil;/* file for text and data: into usefile */ | |
506 | /* | |
507 | * Relocation information for each segment is accumulated | |
508 | * seperately from the others. Writing the relocation | |
509 | * information is logically viewed as writing to one | |
510 | * relocation saving file for each segment; physically | |
511 | * we have a bunch of buffers allocated internally that | |
512 | * contain the relocation information. | |
513 | */ | |
514 | struct relbufdesc *rusefile[NLOC + NLOC]; | |
515 | struct relbufdesc *relfil; |