Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* read.c - read a source file - |
f8701a3f | 2 | Copyright (C) 1986, 1987, 1990, 1991 Free Software Foundation, Inc. |
3340f7e5 | 3 | |
f8701a3f SC |
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. */ | |
fecd2382 | 19 | |
016e0d42 | 20 | #if 0 |
fecd2382 RP |
21 | #define MASK_CHAR (0xFF) /* If your chars aren't 8 bits, you will |
22 | change this a bit. But then, GNU isn't | |
23 | spozed to run on your machine anyway. | |
24 | (RMS is so shortsighted sometimes.) | |
25 | */ | |
016e0d42 ILT |
26 | #else |
27 | #define MASK_CHAR ((int)(unsigned char)-1) | |
28 | #endif | |
fecd2382 RP |
29 | |
30 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) | |
6efd877d KR |
31 | /* This is the largest known floating point */ |
32 | /* format (for now). It will grow when we */ | |
33 | /* do 4361 style flonums. */ | |
fecd2382 RP |
34 | |
35 | ||
016e0d42 ILT |
36 | /* Routines that read assembler source text to build spagetti in memory. |
37 | Another group of these functions is in the expr.c module. */ | |
fecd2382 | 38 | |
6efd877d KR |
39 | #include <ctype.h> |
40 | ||
fecd2382 RP |
41 | #include "as.h" |
42 | ||
43 | #include "obstack.h" | |
f8701a3f | 44 | #include "listing.h" |
fecd2382 | 45 | |
016e0d42 ILT |
46 | /* The NOP_OPCODE is for the alignment fill value. |
47 | * fill it a nop instruction so that the disassembler does not choke | |
48 | * on it | |
49 | */ | |
50 | #ifndef NOP_OPCODE | |
51 | #define NOP_OPCODE 0x00 | |
52 | #endif | |
53 | ||
54 | char *input_line_pointer; /*->next char of source file to parse. */ | |
fecd2382 RP |
55 | |
56 | #if BITS_PER_CHAR != 8 | |
6efd877d KR |
57 | /* The following table is indexed by[(char)] and will break if |
58 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
59 | die horribly; | |
fecd2382 | 60 | #endif |
f8701a3f | 61 | |
016e0d42 ILT |
62 | /* used by is_... macros. our ctype[] */ |
63 | const char lex_type[256] = | |
64 | { | |
65 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ | |
66 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
67 | 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ | |
68 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ | |
69 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
70 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
71 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
72 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, /* pqrstuvwxyz{|}~. */ | |
73 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
74 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
75 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
76 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
77 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
78 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
79 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
80 | }; | |
81 | ||
82 | ||
83 | /* | |
fecd2382 RP |
84 | * In: a character. |
85 | * Out: 1 if this character ends a line. | |
86 | */ | |
87 | #define _ (0) | |
016e0d42 ILT |
88 | char is_end_of_line[256] = |
89 | { | |
fecd2382 | 90 | #ifdef CR_EOL |
016e0d42 | 91 | _, _, _, _, _, _, _, _, _, _, 99, _, _, 99, _, _, /* @abcdefghijklmno */ |
fecd2382 | 92 | #else |
016e0d42 | 93 | _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, _, /* @abcdefghijklmno */ |
fecd2382 | 94 | #endif |
016e0d42 ILT |
95 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
96 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
97 | _, _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, /* 0123456789:;<=>? */ | |
98 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
99 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
100 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
101 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
102 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
103 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
104 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
105 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
106 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
107 | }; | |
fecd2382 RP |
108 | #undef _ |
109 | ||
016e0d42 ILT |
110 | /* Functions private to this file. */ |
111 | ||
112 | static char *buffer; /* 1st char of each buffer of lines is here. */ | |
113 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
fecd2382 | 114 | |
016e0d42 ILT |
115 | static char *bignum_low; /* Lowest char of bignum. */ |
116 | static char *bignum_limit; /* 1st illegal address of bignum. */ | |
117 | static char *bignum_high; /* Highest char of bignum. */ | |
118 | /* May point to (bignum_start-1). */ | |
119 | /* Never >= bignum_limit. */ | |
fecd2382 | 120 | |
016e0d42 ILT |
121 | static char *old_buffer = 0; /* JF a hack */ |
122 | static char *old_input; | |
123 | static char *old_limit; | |
fecd2382 | 124 | |
016e0d42 | 125 | /* Variables for handling include file directory list. */ |
fecd2382 | 126 | |
016e0d42 ILT |
127 | char **include_dirs; /* List of pointers to directories to |
128 | search for .include's */ | |
129 | int include_dir_count; /* How many are in the list */ | |
130 | int include_dir_maxlen = 1;/* Length of longest in list */ | |
fecd2382 RP |
131 | |
132 | #ifndef WORKING_DOT_WORD | |
016e0d42 ILT |
133 | struct broken_word *broken_words; |
134 | int new_broken_words = 0; | |
fecd2382 RP |
135 | #endif |
136 | ||
016e0d42 ILT |
137 | static char *demand_copy_string PARAMS ((int *lenP)); |
138 | int is_it_end_of_statement PARAMS ((void)); | |
139 | unsigned int next_char_of_string PARAMS ((void)); | |
140 | static segT get_known_segmented_expression PARAMS ((expressionS * expP)); | |
141 | static void grow_bignum PARAMS ((void)); | |
142 | static void pobegin PARAMS ((void)); | |
143 | void stringer PARAMS ((int append_zero)); | |
fecd2382 | 144 | |
016e0d42 | 145 | extern int listing; |
fecd2382 | 146 | \f |
6efd877d | 147 | |
016e0d42 ILT |
148 | void |
149 | read_begin () | |
fecd2382 | 150 | { |
016e0d42 | 151 | const char *p; |
f8701a3f | 152 | |
6efd877d KR |
153 | pobegin (); |
154 | obj_read_begin_hook (); | |
f8701a3f | 155 | |
6efd877d KR |
156 | obstack_begin (¬es, 5000); |
157 | obstack_begin (&cond_obstack, 960); | |
f8701a3f | 158 | |
fecd2382 | 159 | #define BIGNUM_BEGIN_SIZE (16) |
6efd877d | 160 | bignum_low = xmalloc ((long) BIGNUM_BEGIN_SIZE); |
f8701a3f SC |
161 | bignum_limit = bignum_low + BIGNUM_BEGIN_SIZE; |
162 | ||
163 | /* Use machine dependent syntax */ | |
164 | for (p = line_separator_chars; *p; p++) | |
165 | is_end_of_line[*p] = 1; | |
166 | /* Use more. FIXME-SOMEDAY. */ | |
fecd2382 RP |
167 | } |
168 | \f | |
169 | /* set up pseudo-op tables */ | |
170 | ||
016e0d42 | 171 | struct hash_control *po_hash = NULL; /* use before set up: NULL->address error */ |
f8701a3f SC |
172 | |
173 | #ifdef DONTDEF | |
6efd877d KR |
174 | void s_gdbline (), s_gdblinetab (); |
175 | void s_gdbbeg (), s_gdbblock (), s_gdbend (), s_gdbsym (); | |
f8701a3f | 176 | #endif |
fecd2382 | 177 | |
016e0d42 | 178 | static const pseudo_typeS potable[] = |
fecd2382 | 179 | { |
6efd877d KR |
180 | {"abort", s_abort, 0}, |
181 | {"align", s_align_ptwo, 0}, | |
182 | {"ascii", stringer, 0}, | |
183 | {"asciz", stringer, 1}, | |
f8701a3f | 184 | /* block */ |
6efd877d KR |
185 | {"byte", cons, 1}, |
186 | {"comm", s_comm, 0}, | |
187 | {"data", s_data, 0}, | |
f8701a3f | 188 | /* dim */ |
6efd877d | 189 | {"double", float_cons, 'd'}, |
f8701a3f | 190 | /* dsect */ |
6efd877d KR |
191 | {"eject", listing_eject, 0}, /* Formfeed listing */ |
192 | {"else", s_else, 0}, | |
193 | {"end", s_end, 0}, | |
194 | {"endif", s_endif, 0}, | |
f8701a3f | 195 | /* endef */ |
6efd877d | 196 | {"equ", s_set, 0}, |
f8701a3f SC |
197 | /* err */ |
198 | /* extend */ | |
6efd877d KR |
199 | {"extern", s_ignore, 0}, /* We treat all undef as ext */ |
200 | {"app-file", s_app_file, 0}, | |
201 | {"file", s_app_file, 0}, | |
202 | {"fill", s_fill, 0}, | |
203 | {"float", float_cons, 'f'}, | |
f8701a3f | 204 | #ifdef DONTDEF |
6efd877d KR |
205 | {"gdbbeg", s_gdbbeg, 0}, |
206 | {"gdbblock", s_gdbblock, 0}, | |
207 | {"gdbend", s_gdbend, 0}, | |
208 | {"gdbsym", s_gdbsym, 0}, | |
209 | {"gdbline", s_gdbline, 0}, | |
210 | {"gdblinetab", s_gdblinetab, 0}, | |
f8701a3f | 211 | #endif |
6efd877d KR |
212 | {"global", s_globl, 0}, |
213 | {"globl", s_globl, 0}, | |
214 | {"hword", cons, 2}, | |
215 | {"if", s_if, 0}, | |
216 | {"ifdef", s_ifdef, 0}, | |
217 | {"ifeqs", s_ifeqs, 0}, | |
218 | {"ifndef", s_ifdef, 1}, | |
219 | {"ifnes", s_ifeqs, 1}, | |
220 | {"ifnotdef", s_ifdef, 1}, | |
221 | {"include", s_include, 0}, | |
222 | {"int", cons, 4}, | |
223 | {"lcomm", s_lcomm, 0}, | |
224 | {"lflags", listing_flags, 0}, /* Listing flags */ | |
225 | {"list", listing_list, 1}, /* Turn listing on */ | |
226 | {"long", cons, 4}, | |
227 | {"lsym", s_lsym, 0}, | |
228 | {"nolist", listing_list, 0}, /* Turn listing off */ | |
229 | {"octa", big_cons, 16}, | |
230 | {"org", s_org, 0}, | |
231 | {"psize", listing_psize, 0}, /* set paper size */ | |
f8701a3f | 232 | /* print */ |
6efd877d KR |
233 | {"quad", big_cons, 8}, |
234 | {"sbttl", listing_title, 1}, /* Subtitle of listing */ | |
f8701a3f SC |
235 | /* scl */ |
236 | /* sect */ | |
6efd877d KR |
237 | {"set", s_set, 0}, |
238 | {"short", cons, 2}, | |
239 | {"single", float_cons, 'f'}, | |
f8701a3f | 240 | /* size */ |
6efd877d | 241 | {"space", s_space, 0}, |
f8701a3f | 242 | /* tag */ |
6efd877d KR |
243 | {"text", s_text, 0}, |
244 | {"title", listing_title, 0}, /* Listing title */ | |
f8701a3f SC |
245 | /* type */ |
246 | /* use */ | |
247 | /* val */ | |
6efd877d KR |
248 | {"word", cons, 2}, |
249 | {NULL} /* end sentinel */ | |
fecd2382 RP |
250 | }; |
251 | ||
6efd877d KR |
252 | static void |
253 | pobegin () | |
254 | { | |
255 | char *errtxt; /* error text */ | |
256 | const pseudo_typeS *pop; | |
257 | ||
258 | po_hash = hash_new (); | |
259 | ||
260 | /* Do the target-specific pseudo ops. */ | |
261 | for (pop = md_pseudo_table; pop->poc_name; pop++) | |
262 | { | |
263 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
264 | if (errtxt && *errtxt) | |
265 | { | |
266 | as_fatal ("error constructing md pseudo-op table"); | |
267 | } /* on error */ | |
268 | } /* for each op */ | |
269 | ||
270 | /* Now object specific. Skip any that were in the target table. */ | |
271 | for (pop = obj_pseudo_table; pop->poc_name; pop++) | |
272 | { | |
273 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
274 | if (errtxt && *errtxt) | |
275 | { | |
276 | if (!strcmp (errtxt, "exists")) | |
277 | { | |
fecd2382 | 278 | #ifdef DIE_ON_OVERRIDES |
6efd877d | 279 | as_fatal ("pseudo op \".%s\" overridden.\n", pop->poc_name); |
fecd2382 | 280 | #endif /* DIE_ON_OVERRIDES */ |
6efd877d KR |
281 | continue; /* OK if target table overrides. */ |
282 | } | |
283 | else | |
284 | { | |
285 | as_fatal ("error constructing obj pseudo-op table"); | |
286 | } /* if overridden */ | |
287 | } /* on error */ | |
288 | } /* for each op */ | |
289 | ||
290 | /* Now portable ones. Skip any that we've seen already. */ | |
291 | for (pop = potable; pop->poc_name; pop++) | |
292 | { | |
293 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
294 | if (errtxt && *errtxt) | |
295 | { | |
296 | if (!strcmp (errtxt, "exists")) | |
297 | { | |
fecd2382 | 298 | #ifdef DIE_ON_OVERRIDES |
6efd877d | 299 | as_fatal ("pseudo op \".%s\" overridden.\n", pop->poc_name); |
fecd2382 | 300 | #endif /* DIE_ON_OVERRIDES */ |
6efd877d KR |
301 | continue; /* OK if target table overrides. */ |
302 | } | |
303 | else | |
304 | { | |
305 | as_fatal ("error constructing obj pseudo-op table"); | |
306 | } /* if overridden */ | |
307 | } /* on error */ | |
308 | } /* for each op */ | |
309 | ||
310 | return; | |
311 | } /* pobegin() */ | |
fecd2382 RP |
312 | \f |
313 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
f8701a3f SC |
314 | if (ignore_input ()) \ |
315 | { \ | |
316 | while (! is_end_of_line[*input_line_pointer++]) \ | |
317 | if (input_line_pointer == buffer_limit) \ | |
318 | break; \ | |
319 | continue; \ | |
320 | } | |
a39116f1 | 321 | |
fecd2382 RP |
322 | |
323 | /* read_a_source_file() | |
324 | * | |
325 | * We read the file, putting things into a web that | |
326 | * represents what we have been reading. | |
327 | */ | |
6efd877d KR |
328 | void |
329 | read_a_source_file (name) | |
330 | char *name; | |
fecd2382 | 331 | { |
f8701a3f | 332 | register char c; |
6efd877d | 333 | register char *s; /* string of symbol, '\0' appended */ |
f8701a3f | 334 | register int temp; |
6efd877d KR |
335 | /* register struct frag * fragP; JF unused *//* a frag we just made */ |
336 | pseudo_typeS *pop; | |
f8701a3f | 337 | #ifdef DONTDEF |
6efd877d KR |
338 | void gdb_block_beg (); |
339 | void gdb_block_position (); | |
340 | void gdb_block_end (); | |
341 | void gdb_symbols_fixup (); | |
f8701a3f SC |
342 | #endif |
343 | ||
6efd877d | 344 | buffer = input_scrub_new_file (name); |
f8701a3f | 345 | |
6efd877d KR |
346 | listing_file (name); |
347 | listing_newline (""); | |
f8701a3f | 348 | |
6efd877d KR |
349 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) |
350 | { /* We have another line to parse. */ | |
351 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
352 | contin: /* JF this goto is my fault I admit it. Someone brave please re-write | |
f8701a3f | 353 | the whole input section here? Pleeze??? */ |
6efd877d KR |
354 | while (input_line_pointer < buffer_limit) |
355 | { /* We have more of this buffer to parse. */ | |
f8701a3f SC |
356 | |
357 | /* | |
358 | * We now have input_line_pointer->1st char of next line. | |
359 | * If input_line_pointer [-1] == '\n' then we just | |
360 | * scanned another line: so bump line counters. | |
361 | */ | |
6efd877d KR |
362 | if (input_line_pointer[-1] == '\n') |
363 | { | |
364 | bump_line_counters (); | |
f8701a3f SC |
365 | |
366 | #ifdef MRI | |
367 | /* Text at the start of a line must be a label, we run down and stick a colon in */ | |
6efd877d KR |
368 | if (is_name_beginner (*input_line_pointer)) |
369 | { | |
370 | char *line_start = input_line_pointer; | |
371 | char c = get_symbol_end (); | |
372 | colon (line_start); | |
373 | *input_line_pointer = c; | |
374 | if (c == ':') | |
375 | input_line_pointer++; | |
376 | ||
377 | } | |
f8701a3f | 378 | #endif |
6efd877d KR |
379 | } /* just passed a newline */ |
380 | ||
f8701a3f SC |
381 | |
382 | ||
383 | ||
384 | ||
f8701a3f SC |
385 | /* |
386 | * We are at the begining of a line, or similar place. | |
387 | * We expect a well-formed assembler statement. | |
388 | * A "symbol-name:" is a statement. | |
389 | * | |
390 | * Depending on what compiler is used, the order of these tests | |
391 | * may vary to catch most common case 1st. | |
392 | * Each test is independent of all other tests at the (top) level. | |
393 | * PLEASE make a compiler that doesn't use this assembler. | |
394 | * It is crufty to waste a compiler's time encoding things for this | |
395 | * assembler, which then wastes more time decoding it. | |
396 | * (And communicating via (linear) files is silly! | |
397 | * If you must pass stuff, please pass a tree!) | |
398 | */ | |
6efd877d KR |
399 | if ((c = *input_line_pointer++) == '\t' || c == ' ' || c == '\f' || c == 0) |
400 | { | |
401 | c = *input_line_pointer++; | |
402 | } | |
403 | know (c != ' '); /* No further leading whitespace. */ | |
404 | LISTING_NEWLINE (); | |
f8701a3f SC |
405 | /* |
406 | * C is the 1st significant character. | |
407 | * Input_line_pointer points after that character. | |
408 | */ | |
6efd877d KR |
409 | if (is_name_beginner (c)) |
410 | { /* want user-defined label or pseudo/opcode */ | |
411 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
412 | ||
f8701a3f | 413 | s = --input_line_pointer; |
6efd877d | 414 | c = get_symbol_end (); /* name's delimiter */ |
f8701a3f SC |
415 | /* |
416 | * C is character after symbol. | |
417 | * That character's place in the input line is now '\0'. | |
418 | * S points to the beginning of the symbol. | |
419 | * [In case of pseudo-op, s->'.'.] | |
420 | * Input_line_pointer->'\0' where c was. | |
421 | */ | |
6efd877d KR |
422 | if (c == ':') |
423 | { | |
424 | colon (s); /* user-defined label */ | |
425 | *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */ | |
f8701a3f | 426 | /* Input_line_pointer->after ':'. */ |
6efd877d KR |
427 | SKIP_WHITESPACE (); |
428 | ||
f8701a3f | 429 | |
6efd877d KR |
430 | } |
431 | else if (c == '=' || input_line_pointer[1] == '=') | |
432 | { /* JF deal with FOO=BAR */ | |
433 | equals (s); | |
434 | demand_empty_rest_of_line (); | |
435 | } | |
436 | else | |
437 | { /* expect pseudo-op or machine instruction */ | |
f8701a3f | 438 | #ifdef MRI |
6efd877d KR |
439 | if (!done_pseudo (s)) |
440 | ||
f8701a3f | 441 | #else |
6efd877d KR |
442 | if (*s == '.') |
443 | { | |
444 | /* | |
f8701a3f SC |
445 | * PSEUDO - OP. |
446 | * | |
447 | * WARNING: c has next char, which may be end-of-line. | |
448 | * We lookup the pseudo-op table with s+1 because we | |
449 | * already know that the pseudo-op begins with a '.'. | |
450 | */ | |
6efd877d KR |
451 | |
452 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
453 | ||
454 | /* Print the error msg now, while we still can */ | |
455 | if (!pop) | |
456 | { | |
457 | as_bad ("Unknown pseudo-op: `%s'", s); | |
f8701a3f | 458 | *input_line_pointer = c; |
6efd877d KR |
459 | s_ignore (0); |
460 | break; | |
461 | } | |
462 | ||
463 | /* Put it back for error messages etc. */ | |
464 | *input_line_pointer = c; | |
465 | /* The following skip of whitespace is compulsory. */ | |
466 | /* A well shaped space is sometimes all that separates keyword from operands. */ | |
467 | if (c == ' ' || c == '\t') | |
468 | { | |
469 | input_line_pointer++; | |
470 | } /* Skip seperator after keyword. */ | |
471 | /* | |
f8701a3f SC |
472 | * Input_line is restored. |
473 | * Input_line_pointer->1st non-blank char | |
474 | * after pseudo-operation. | |
475 | */ | |
6efd877d KR |
476 | if (!pop) |
477 | { | |
478 | ignore_rest_of_line (); | |
479 | break; | |
480 | } | |
481 | else | |
482 | { | |
483 | (*pop->poc_handler) (pop->poc_val); | |
484 | } /* if we have one */ | |
485 | } | |
486 | else | |
f8701a3f | 487 | #endif |
6efd877d KR |
488 | { /* machine instruction */ |
489 | /* WARNING: c has char, which may be end-of-line. */ | |
490 | /* Also: input_line_pointer->`\0` where c was. */ | |
491 | *input_line_pointer = c; | |
492 | while (!is_end_of_line[*input_line_pointer]) | |
493 | { | |
494 | input_line_pointer++; | |
495 | } | |
f8701a3f | 496 | |
6efd877d KR |
497 | c = *input_line_pointer; |
498 | *input_line_pointer = '\0'; | |
f8701a3f | 499 | |
6efd877d | 500 | md_assemble (s); /* Assemble 1 instruction. */ |
f8701a3f | 501 | |
6efd877d | 502 | *input_line_pointer++ = c; |
f8701a3f | 503 | |
6efd877d KR |
504 | /* We resume loop AFTER the end-of-line from this instruction */ |
505 | } /* if (*s=='.') */ | |
506 | ||
507 | } /* if c==':' */ | |
f8701a3f | 508 | continue; |
6efd877d | 509 | } /* if (is_name_beginner(c) */ |
f8701a3f | 510 | |
f8701a3f | 511 | |
6efd877d KR |
512 | if (is_end_of_line[c]) |
513 | { | |
f8701a3f | 514 | continue; |
6efd877d KR |
515 | } /* empty statement */ |
516 | ||
517 | ||
518 | #if defined(LOCAL_LABELS_DOLLAR) || defined(LOCAL_LABELS_FB) | |
519 | if (isdigit (c)) | |
520 | { /* local label ("4:") */ | |
521 | char *backup = input_line_pointer; | |
522 | ||
523 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
524 | ||
525 | temp = c - '0'; | |
526 | ||
527 | while (isdigit (*input_line_pointer)) | |
528 | { | |
529 | temp = (temp * 10) + *input_line_pointer - '0'; | |
530 | ++input_line_pointer; | |
531 | } /* read the whole number */ | |
532 | ||
533 | #ifdef LOCAL_LABELS_DOLLAR | |
534 | if (*input_line_pointer == '$' | |
535 | && *(input_line_pointer + 1) == ':') | |
536 | { | |
537 | input_line_pointer += 2; | |
538 | ||
539 | if (dollar_label_defined (temp)) | |
540 | { | |
541 | as_fatal ("label \"%d$\" redefined", temp); | |
542 | } | |
543 | ||
544 | define_dollar_label (temp); | |
545 | colon (dollar_label_name (temp, 0)); | |
546 | continue; | |
547 | } | |
f8701a3f | 548 | #endif /* LOCAL_LABELS_DOLLAR */ |
6efd877d | 549 | |
f8701a3f | 550 | #ifdef LOCAL_LABELS_FB |
6efd877d KR |
551 | if (*input_line_pointer++ == ':') |
552 | { | |
553 | fb_label_instance_inc (temp); | |
554 | colon (fb_label_name (temp, 0)); | |
555 | continue; | |
556 | } | |
f8701a3f | 557 | #endif /* LOCAL_LABELS_FB */ |
6efd877d KR |
558 | |
559 | input_line_pointer = backup; | |
560 | } /* local label ("4:") */ | |
f8701a3f SC |
561 | #endif /* LOCAL_LABELS_DOLLAR or LOCAL_LABELS_FB */ |
562 | ||
6efd877d KR |
563 | if (c && strchr (line_comment_chars, c)) |
564 | { /* Its a comment. Better say APP or NO_APP */ | |
f8701a3f SC |
565 | char *ends; |
566 | char *new_buf; | |
567 | char *new_tmp; | |
568 | int new_length; | |
569 | char *tmp_buf = 0; | |
6efd877d KR |
570 | extern char *scrub_string, *scrub_last_string; |
571 | ||
572 | bump_line_counters (); | |
573 | s = input_line_pointer; | |
574 | if (strncmp (s, "APP\n", 4)) | |
575 | continue; /* We ignore it */ | |
576 | s += 4; | |
577 | ||
578 | ends = strstr (s, "#NO_APP\n"); | |
579 | ||
580 | if (!ends) | |
581 | { | |
f8701a3f SC |
582 | int tmp_len; |
583 | int num; | |
6efd877d | 584 | |
f8701a3f SC |
585 | /* The end of the #APP wasn't in this buffer. We |
586 | keep reading in buffers until we find the #NO_APP | |
587 | that goes with this #APP There is one. The specs | |
588 | guarentee it. . . */ | |
6efd877d KR |
589 | tmp_len = buffer_limit - s; |
590 | tmp_buf = xmalloc (tmp_len); | |
591 | bcopy (s, tmp_buf, tmp_len); | |
592 | do | |
593 | { | |
594 | new_tmp = input_scrub_next_buffer (&buffer); | |
f8701a3f | 595 | if (!new_tmp) |
6efd877d | 596 | break; |
f8701a3f | 597 | else |
6efd877d | 598 | buffer_limit = new_tmp; |
f8701a3f | 599 | input_line_pointer = buffer; |
6efd877d | 600 | ends = strstr (buffer, "#NO_APP\n"); |
f8701a3f | 601 | if (ends) |
6efd877d | 602 | num = ends - buffer; |
f8701a3f | 603 | else |
6efd877d KR |
604 | num = buffer_limit - buffer; |
605 | ||
606 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
607 | bcopy (buffer, tmp_buf + tmp_len, num); | |
608 | tmp_len += num; | |
609 | } | |
610 | while (!ends); | |
611 | ||
612 | input_line_pointer = ends ? ends + 8 : NULL; | |
613 | ||
614 | s = tmp_buf; | |
615 | ends = s + tmp_len; | |
616 | ||
617 | } | |
618 | else | |
619 | { | |
620 | input_line_pointer = ends + 8; | |
621 | } | |
622 | new_buf = xmalloc (100); | |
623 | new_length = 100; | |
624 | new_tmp = new_buf; | |
625 | ||
626 | scrub_string = s; | |
f8701a3f | 627 | scrub_last_string = ends; |
6efd877d KR |
628 | for (;;) |
629 | { | |
f8701a3f SC |
630 | int ch; |
631 | ||
6efd877d KR |
632 | ch = do_scrub_next_char (scrub_from_string, scrub_to_string); |
633 | if (ch == EOF) | |
634 | break; | |
635 | *new_tmp++ = ch; | |
636 | if (new_tmp == new_buf + new_length) | |
637 | { | |
638 | new_buf = xrealloc (new_buf, new_length + 100); | |
639 | new_tmp = new_buf + new_length; | |
640 | new_length += 100; | |
f8701a3f | 641 | } |
fecd2382 | 642 | } |
f8701a3f SC |
643 | |
644 | if (tmp_buf) | |
6efd877d KR |
645 | free (tmp_buf); |
646 | old_buffer = buffer; | |
647 | old_input = input_line_pointer; | |
648 | old_limit = buffer_limit; | |
649 | buffer = new_buf; | |
650 | input_line_pointer = new_buf; | |
651 | buffer_limit = new_tmp; | |
f8701a3f SC |
652 | continue; |
653 | } | |
654 | ||
6efd877d | 655 | HANDLE_CONDITIONAL_ASSEMBLY (); |
f8701a3f SC |
656 | |
657 | /* as_warn("Junk character %d.",c); Now done by ignore_rest */ | |
658 | input_line_pointer--; /* Report unknown char as ignored. */ | |
6efd877d KR |
659 | ignore_rest_of_line (); |
660 | } /* while (input_line_pointer<buffer_limit) */ | |
661 | if (old_buffer) | |
662 | { | |
663 | bump_line_counters (); | |
664 | if (old_input != 0) | |
665 | { | |
666 | buffer = old_buffer; | |
667 | input_line_pointer = old_input; | |
668 | buffer_limit = old_limit; | |
f8701a3f SC |
669 | old_buffer = 0; |
670 | goto contin; | |
671 | } | |
672 | } | |
6efd877d KR |
673 | } /* while (more buffers to scan) */ |
674 | input_scrub_close (); /* Close the input file */ | |
f8701a3f | 675 | |
6efd877d | 676 | } /* read_a_source_file() */ |
fecd2382 | 677 | |
6efd877d KR |
678 | void |
679 | s_abort () | |
680 | { | |
681 | as_fatal (".abort detected. Abandoning ship."); | |
682 | } /* s_abort() */ | |
fecd2382 RP |
683 | |
684 | /* For machines where ".align 4" means align to a 4 byte boundary. */ | |
6efd877d KR |
685 | void |
686 | s_align_bytes (arg) | |
687 | int arg; | |
fecd2382 | 688 | { |
6efd877d KR |
689 | register unsigned int temp; |
690 | register long temp_fill; | |
691 | unsigned int i = 0; | |
692 | unsigned long max_alignment = 1 << 15; | |
f8701a3f | 693 | |
6efd877d KR |
694 | if (is_end_of_line[*input_line_pointer]) |
695 | temp = arg; /* Default value from pseudo-op table */ | |
696 | else | |
697 | temp = get_absolute_expression (); | |
f8701a3f | 698 | |
6efd877d KR |
699 | if (temp > max_alignment) |
700 | { | |
701 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
f8701a3f SC |
702 | } |
703 | ||
6efd877d | 704 | /* |
f8701a3f SC |
705 | * For the sparc, `.align (1<<n)' actually means `.align n' |
706 | * so we have to convert it. | |
707 | */ | |
6efd877d KR |
708 | if (temp != 0) |
709 | { | |
710 | for (i = 0; (temp & 1) == 0; temp >>= 1, ++i) | |
711 | ; | |
f8701a3f | 712 | } |
6efd877d KR |
713 | if (temp != 1) |
714 | as_bad ("Alignment not a power of 2"); | |
f8701a3f | 715 | |
6efd877d KR |
716 | temp = i; |
717 | if (*input_line_pointer == ',') | |
718 | { | |
719 | input_line_pointer++; | |
720 | temp_fill = get_absolute_expression (); | |
f8701a3f | 721 | } |
016e0d42 ILT |
722 | else if (now_seg != SEG_DATA && now_seg != SEG_BSS) |
723 | temp_fill = NOP_OPCODE; | |
6efd877d | 724 | else |
016e0d42 | 725 | temp_fill = 0; |
6efd877d KR |
726 | /* Only make a frag if we HAVE to. . . */ |
727 | if (temp && !need_pass_2) | |
728 | frag_align (temp, (int) temp_fill); | |
f8701a3f | 729 | |
6efd877d KR |
730 | demand_empty_rest_of_line (); |
731 | } /* s_align_bytes() */ | |
fecd2382 RP |
732 | |
733 | /* For machines where ".align 4" means align to 2**4 boundary. */ | |
6efd877d KR |
734 | void |
735 | s_align_ptwo () | |
736 | { | |
737 | register int temp; | |
738 | register long temp_fill; | |
739 | long max_alignment = 15; | |
740 | ||
741 | temp = get_absolute_expression (); | |
742 | if (temp > max_alignment) | |
743 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
744 | else if (temp < 0) | |
745 | { | |
746 | as_bad ("Alignment negative. 0 assumed."); | |
747 | temp = 0; | |
748 | } | |
749 | if (*input_line_pointer == ',') | |
750 | { | |
751 | input_line_pointer++; | |
752 | temp_fill = get_absolute_expression (); | |
753 | } | |
016e0d42 ILT |
754 | else if (now_seg != SEG_DATA && now_seg != SEG_BSS) |
755 | temp_fill = NOP_OPCODE; | |
6efd877d KR |
756 | else |
757 | temp_fill = 0; | |
758 | /* Only make a frag if we HAVE to. . . */ | |
759 | if (temp && !need_pass_2) | |
760 | frag_align (temp, (int) temp_fill); | |
761 | ||
762 | record_alignment (now_seg, temp); | |
763 | ||
764 | demand_empty_rest_of_line (); | |
765 | } /* s_align_ptwo() */ | |
766 | ||
767 | void | |
768 | s_comm () | |
769 | { | |
770 | register char *name; | |
771 | register char c; | |
772 | register char *p; | |
773 | register int temp; | |
774 | register symbolS *symbolP; | |
775 | ||
776 | name = input_line_pointer; | |
777 | c = get_symbol_end (); | |
778 | /* just after name is now '\0' */ | |
779 | p = input_line_pointer; | |
780 | *p = c; | |
781 | SKIP_WHITESPACE (); | |
782 | if (*input_line_pointer != ',') | |
783 | { | |
784 | as_bad ("Expected comma after symbol-name: rest of line ignored."); | |
785 | ignore_rest_of_line (); | |
786 | return; | |
787 | } | |
788 | input_line_pointer++; /* skip ',' */ | |
789 | if ((temp = get_absolute_expression ()) < 0) | |
790 | { | |
791 | as_warn (".COMMon length (%d.) <0! Ignored.", temp); | |
792 | ignore_rest_of_line (); | |
793 | return; | |
794 | } | |
795 | *p = 0; | |
796 | symbolP = symbol_find_or_make (name); | |
797 | *p = c; | |
798 | if (S_IS_DEFINED (symbolP)) | |
799 | { | |
800 | as_bad ("Ignoring attempt to re-define symbol"); | |
801 | ignore_rest_of_line (); | |
802 | return; | |
803 | } | |
804 | if (S_GET_VALUE (symbolP)) | |
805 | { | |
806 | if (S_GET_VALUE (symbolP) != temp) | |
807 | as_bad ("Length of .comm \"%s\" is already %d. Not changed to %d.", | |
808 | S_GET_NAME (symbolP), | |
809 | S_GET_VALUE (symbolP), | |
810 | temp); | |
811 | } | |
812 | else | |
813 | { | |
814 | S_SET_VALUE (symbolP, temp); | |
815 | S_SET_EXTERNAL (symbolP); | |
816 | } | |
fecd2382 | 817 | #ifdef VMS |
6efd877d KR |
818 | if (!temp) |
819 | symbolP->sy_other = const_flag; | |
fecd2382 | 820 | #endif |
6efd877d KR |
821 | know (symbolP->sy_frag == &zero_address_frag); |
822 | demand_empty_rest_of_line (); | |
823 | } /* s_comm() */ | |
fecd2382 RP |
824 | |
825 | void | |
6efd877d | 826 | s_data () |
fecd2382 | 827 | { |
6efd877d | 828 | register int temp; |
f8701a3f | 829 | |
6efd877d | 830 | temp = get_absolute_expression (); |
a39116f1 | 831 | #ifdef MANY_SEGMENTS |
6efd877d | 832 | subseg_new (SEG_E1, (subsegT) temp); |
a39116f1 | 833 | #else |
6efd877d | 834 | subseg_new (SEG_DATA, (subsegT) temp); |
a39116f1 | 835 | #endif |
f8701a3f | 836 | |
fecd2382 | 837 | #ifdef VMS |
6efd877d | 838 | const_flag = 0; |
fecd2382 | 839 | #endif |
6efd877d | 840 | demand_empty_rest_of_line (); |
fecd2382 RP |
841 | } |
842 | ||
6efd877d KR |
843 | void |
844 | s_app_file () | |
845 | { | |
846 | register char *s; | |
847 | int length; | |
f8701a3f | 848 | |
6efd877d KR |
849 | /* Some assemblers tolerate immediately following '"' */ |
850 | if ((s = demand_copy_string (&length)) != 0) | |
851 | { | |
852 | new_logical_line (s, -1); | |
853 | demand_empty_rest_of_line (); | |
854 | } | |
fecd2382 | 855 | #ifdef OBJ_COFF |
6efd877d | 856 | c_dot_file_symbol (s); |
fecd2382 | 857 | #endif /* OBJ_COFF */ |
6efd877d | 858 | } /* s_app_file() */ |
fecd2382 | 859 | |
6efd877d KR |
860 | void |
861 | s_fill () | |
862 | { | |
863 | long temp_repeat = 0; | |
864 | long temp_size = 1; | |
865 | register long temp_fill = 0; | |
866 | char *p; | |
f8701a3f | 867 | |
7c2d4011 | 868 | |
6efd877d KR |
869 | temp_repeat = get_absolute_expression (); |
870 | if (*input_line_pointer == ',') | |
871 | { | |
872 | input_line_pointer++; | |
873 | temp_size = get_absolute_expression (); | |
874 | if (*input_line_pointer == ',') | |
7c2d4011 SC |
875 | { |
876 | input_line_pointer++; | |
6efd877d | 877 | temp_fill = get_absolute_expression (); |
fecd2382 | 878 | } |
6efd877d KR |
879 | } |
880 | /* | |
fecd2382 RP |
881 | * This is to be compatible with BSD 4.2 AS, not for any rational reason. |
882 | */ | |
883 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
6efd877d KR |
884 | if (temp_size > BSD_FILL_SIZE_CROCK_8) |
885 | { | |
886 | as_warn (".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8); | |
887 | temp_size = BSD_FILL_SIZE_CROCK_8; | |
888 | } | |
889 | if (temp_size < 0) | |
890 | { | |
891 | as_warn ("Size negative: .fill ignored."); | |
892 | temp_size = 0; | |
893 | } | |
894 | else if (temp_repeat <= 0) | |
895 | { | |
896 | as_warn ("Repeat < 0, .fill ignored"); | |
897 | temp_size = 0; | |
898 | } | |
7fd3560a | 899 | |
6efd877d KR |
900 | if (temp_size && !need_pass_2) |
901 | { | |
902 | p = frag_var (rs_fill, (int) temp_size, (int) temp_size, (relax_substateT) 0, (symbolS *) 0, temp_repeat, (char *) 0); | |
903 | bzero (p, (int) temp_size); | |
904 | /* | |
f8701a3f SC |
905 | * The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX flavoured AS. |
906 | * The following bizzare behaviour is to be compatible with above. | |
907 | * I guess they tried to take up to 8 bytes from a 4-byte expression | |
908 | * and they forgot to sign extend. Un*x Sux. | |
909 | */ | |
fecd2382 | 910 | #define BSD_FILL_SIZE_CROCK_4 (4) |
6efd877d KR |
911 | md_number_to_chars (p, temp_fill, temp_size > BSD_FILL_SIZE_CROCK_4 ? BSD_FILL_SIZE_CROCK_4 : (int) temp_size); |
912 | /* | |
f8701a3f SC |
913 | * Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) |
914 | * but emits no error message because it seems a legal thing to do. | |
915 | * It is a degenerate case of .fill but could be emitted by a compiler. | |
916 | */ | |
6efd877d KR |
917 | } |
918 | demand_empty_rest_of_line (); | |
f8701a3f SC |
919 | } |
920 | ||
921 | #ifdef DONTDEF | |
922 | void | |
6efd877d | 923 | s_gdbbeg () |
f8701a3f | 924 | { |
6efd877d KR |
925 | register int temp; |
926 | ||
927 | temp = get_absolute_expression (); | |
928 | if (temp < 0) | |
929 | as_warn ("Block number <0. Ignored."); | |
930 | else if (flagseen['G']) | |
931 | gdb_block_beg ((long) temp, frag_now, (long) (obstack_next_free (&frags) - frag_now->fr_literal)); | |
932 | demand_empty_rest_of_line (); | |
f8701a3f SC |
933 | } |
934 | ||
935 | void | |
6efd877d | 936 | s_gdbblock () |
f8701a3f | 937 | { |
6efd877d KR |
938 | register int position; |
939 | int temp; | |
940 | ||
941 | if (get_absolute_expression_and_terminator (&temp) != ',') | |
942 | { | |
943 | as_bad ("expected comma before position in .gdbblock"); | |
944 | --input_line_pointer; | |
945 | ignore_rest_of_line (); | |
946 | return; | |
947 | } | |
948 | position = get_absolute_expression (); | |
949 | if (flagseen['G']) | |
950 | gdb_block_position ((long) temp, (long) position); | |
951 | demand_empty_rest_of_line (); | |
f8701a3f SC |
952 | } |
953 | ||
954 | void | |
6efd877d | 955 | s_gdbend () |
f8701a3f | 956 | { |
6efd877d KR |
957 | register int temp; |
958 | ||
959 | temp = get_absolute_expression (); | |
960 | if (temp < 0) | |
961 | as_warn ("Block number <0. Ignored."); | |
962 | else if (flagseen['G']) | |
963 | gdb_block_end ((long) temp, frag_now, (long) (obstack_next_free (&frags) - frag_now->fr_literal)); | |
964 | demand_empty_rest_of_line (); | |
f8701a3f SC |
965 | } |
966 | ||
967 | void | |
6efd877d | 968 | s_gdbsym () |
f8701a3f | 969 | { |
6efd877d KR |
970 | register char *name, *p; |
971 | register char c; | |
972 | register symbolS *symbolP; | |
973 | register int temp; | |
974 | ||
975 | name = input_line_pointer; | |
976 | c = get_symbol_end (); | |
977 | p = input_line_pointer; | |
978 | symbolP = symbol_find_or_make (name); | |
979 | *p = c; | |
980 | SKIP_WHITESPACE (); | |
981 | if (*input_line_pointer != ',') | |
982 | { | |
983 | as_bad ("Expected comma after name"); | |
984 | ignore_rest_of_line (); | |
985 | return; | |
986 | } | |
987 | input_line_pointer++; | |
988 | if ((temp = get_absolute_expression ()) < 0) | |
989 | { | |
990 | as_bad ("Bad GDB symbol file offset (%d.) <0! Ignored.", temp); | |
991 | ignore_rest_of_line (); | |
992 | return; | |
993 | } | |
994 | if (flagseen['G']) | |
995 | gdb_symbols_fixup (symbolP, (long) temp); | |
996 | demand_empty_rest_of_line (); | |
f8701a3f SC |
997 | } |
998 | ||
999 | void | |
6efd877d | 1000 | s_gdbline () |
f8701a3f | 1001 | { |
6efd877d | 1002 | int file_number, lineno; |
f8701a3f | 1003 | |
6efd877d KR |
1004 | if (get_absolute_expression_and_terminator (&file_number) != ',') |
1005 | { | |
1006 | as_bad ("expected comman after filenum in .gdbline"); | |
1007 | ignore_rest_of_line (); | |
1008 | return; | |
1009 | } | |
1010 | lineno = get_absolute_expression (); | |
1011 | if (flagseen['G']) | |
1012 | gdb_line (file_number, lineno); | |
1013 | demand_empty_rest_of_line (); | |
fecd2382 RP |
1014 | } |
1015 | ||
f8701a3f SC |
1016 | |
1017 | void | |
6efd877d | 1018 | s_gdblinetab () |
f8701a3f | 1019 | { |
6efd877d | 1020 | int file_number, offset; |
f8701a3f | 1021 | |
6efd877d KR |
1022 | if (get_absolute_expression_and_terminator (&file_number) != ',') |
1023 | { | |
1024 | as_bad ("expected comma after filenum in .gdblinetab"); | |
1025 | ignore_rest_of_line (); | |
1026 | return; | |
1027 | } | |
1028 | offset = get_absolute_expression (); | |
1029 | if (flagseen['G']) | |
1030 | gdb_line_tab (file_number, offset); | |
1031 | demand_empty_rest_of_line (); | |
f8701a3f | 1032 | } |
6efd877d | 1033 | |
f8701a3f SC |
1034 | #endif |
1035 | ||
6efd877d KR |
1036 | void |
1037 | s_globl () | |
1038 | { | |
1039 | register char *name; | |
1040 | register int c; | |
1041 | register symbolS *symbolP; | |
fecd2382 | 1042 | |
6efd877d KR |
1043 | do |
1044 | { | |
1045 | name = input_line_pointer; | |
1046 | c = get_symbol_end (); | |
1047 | symbolP = symbol_find_or_make (name); | |
1048 | *input_line_pointer = c; | |
1049 | SKIP_WHITESPACE (); | |
1050 | S_SET_EXTERNAL (symbolP); | |
1051 | if (c == ',') | |
1052 | { | |
1053 | input_line_pointer++; | |
1054 | SKIP_WHITESPACE (); | |
1055 | if (*input_line_pointer == '\n') | |
1056 | c = '\n'; | |
1057 | } | |
1058 | } | |
1059 | while (c == ','); | |
1060 | demand_empty_rest_of_line (); | |
1061 | } /* s_globl() */ | |
1062 | ||
1063 | void | |
1064 | s_lcomm (needs_align) | |
1065 | int needs_align; /* 1 if this was a ".bss" directive, which may require | |
fecd2382 RP |
1066 | * a 3rd argument (alignment). |
1067 | * 0 if it was an ".lcomm" (2 args only) | |
1068 | */ | |
1069 | { | |
6efd877d KR |
1070 | register char *name; |
1071 | register char c; | |
1072 | register char *p; | |
1073 | register int temp; | |
1074 | register symbolS *symbolP; | |
1075 | const int max_alignment = 15; | |
1076 | int align = 0; | |
1077 | ||
1078 | name = input_line_pointer; | |
1079 | c = get_symbol_end (); | |
1080 | p = input_line_pointer; | |
1081 | *p = c; | |
1082 | SKIP_WHITESPACE (); | |
1083 | if (*input_line_pointer != ',') | |
1084 | { | |
1085 | as_bad ("Expected comma after name"); | |
1086 | ignore_rest_of_line (); | |
1087 | return; | |
1088 | } | |
f8701a3f | 1089 | |
6efd877d | 1090 | ++input_line_pointer; |
f8701a3f | 1091 | |
6efd877d KR |
1092 | if (*input_line_pointer == '\n') |
1093 | { | |
1094 | as_bad ("Missing size expression"); | |
1095 | return; | |
1096 | } | |
f8701a3f | 1097 | |
6efd877d KR |
1098 | if ((temp = get_absolute_expression ()) < 0) |
1099 | { | |
1100 | as_warn ("BSS length (%d.) <0! Ignored.", temp); | |
1101 | ignore_rest_of_line (); | |
1102 | return; | |
1103 | } | |
f8701a3f | 1104 | |
6efd877d KR |
1105 | if (needs_align) |
1106 | { | |
1107 | align = 0; | |
1108 | SKIP_WHITESPACE (); | |
1109 | if (*input_line_pointer != ',') | |
1110 | { | |
1111 | as_bad ("Expected comma after size"); | |
1112 | ignore_rest_of_line (); | |
1113 | return; | |
1114 | } | |
1115 | input_line_pointer++; | |
1116 | SKIP_WHITESPACE (); | |
1117 | if (*input_line_pointer == '\n') | |
1118 | { | |
1119 | as_bad ("Missing alignment"); | |
1120 | return; | |
1121 | } | |
1122 | align = get_absolute_expression (); | |
1123 | if (align > max_alignment) | |
1124 | { | |
1125 | align = max_alignment; | |
1126 | as_warn ("Alignment too large: %d. assumed.", align); | |
1127 | } | |
1128 | else if (align < 0) | |
1129 | { | |
1130 | align = 0; | |
1131 | as_warn ("Alignment negative. 0 assumed."); | |
1132 | } | |
a39116f1 RP |
1133 | #ifdef MANY_SEGMENTS |
1134 | #define SEG_BSS SEG_E2 | |
6efd877d | 1135 | record_alignment (SEG_E2, align); |
a39116f1 | 1136 | #else |
6efd877d | 1137 | record_alignment (SEG_BSS, align); |
a39116f1 | 1138 | #endif |
6efd877d | 1139 | } /* if needs align */ |
f8701a3f | 1140 | |
6efd877d KR |
1141 | *p = 0; |
1142 | symbolP = symbol_find_or_make (name); | |
1143 | *p = c; | |
f8701a3f | 1144 | |
6efd877d | 1145 | if ( |
fecd2382 | 1146 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
1147 | S_GET_OTHER (symbolP) == 0 && |
1148 | S_GET_DESC (symbolP) == 0 && | |
fecd2382 | 1149 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
6efd877d KR |
1150 | (((S_GET_SEGMENT (symbolP) == SEG_BSS) && (S_GET_VALUE (symbolP) == local_bss_counter)) |
1151 | || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0))) | |
1152 | { | |
1153 | if (needs_align) | |
1154 | { | |
1155 | /* Align */ | |
1156 | align = ~((~0) << align); /* Convert to a mask */ | |
1157 | local_bss_counter = | |
1158 | (local_bss_counter + align) & (~align); | |
1159 | } | |
f8701a3f | 1160 | |
6efd877d KR |
1161 | S_SET_VALUE (symbolP, local_bss_counter); |
1162 | S_SET_SEGMENT (symbolP, SEG_BSS); | |
fecd2382 | 1163 | #ifdef OBJ_COFF |
6efd877d | 1164 | /* The symbol may already have been created with a preceding |
fecd2382 RP |
1165 | * ".globl" directive -- be careful not to step on storage |
1166 | * class in that case. Otherwise, set it to static. | |
1167 | */ | |
6efd877d KR |
1168 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) |
1169 | { | |
1170 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
fecd2382 | 1171 | } |
6efd877d KR |
1172 | #endif /* OBJ_COFF */ |
1173 | symbolP->sy_frag = &bss_address_frag; | |
1174 | local_bss_counter += temp; | |
1175 | } | |
1176 | else | |
1177 | { | |
1178 | as_bad ("Ignoring attempt to re-define symbol from %d. to %d.", | |
1179 | S_GET_VALUE (symbolP), local_bss_counter); | |
1180 | } | |
1181 | demand_empty_rest_of_line (); | |
f8701a3f | 1182 | |
6efd877d KR |
1183 | return; |
1184 | } /* s_lcomm() */ | |
fecd2382 RP |
1185 | |
1186 | void | |
6efd877d | 1187 | s_long () |
fecd2382 | 1188 | { |
6efd877d | 1189 | cons (4); |
fecd2382 RP |
1190 | } |
1191 | ||
1192 | void | |
6efd877d | 1193 | s_int () |
fecd2382 | 1194 | { |
6efd877d | 1195 | cons (4); |
fecd2382 RP |
1196 | } |
1197 | ||
6efd877d KR |
1198 | void |
1199 | s_lsym () | |
1200 | { | |
1201 | register char *name; | |
1202 | register char c; | |
1203 | register char *p; | |
1204 | register segT segment; | |
1205 | expressionS exp; | |
1206 | register symbolS *symbolP; | |
1207 | ||
1208 | /* we permit ANY defined expression: BSD4.2 demands constants */ | |
1209 | name = input_line_pointer; | |
1210 | c = get_symbol_end (); | |
1211 | p = input_line_pointer; | |
1212 | *p = c; | |
1213 | SKIP_WHITESPACE (); | |
1214 | if (*input_line_pointer != ',') | |
1215 | { | |
1216 | *p = 0; | |
1217 | as_bad ("Expected comma after name \"%s\"", name); | |
1218 | *p = c; | |
1219 | ignore_rest_of_line (); | |
1220 | return; | |
1221 | } | |
1222 | input_line_pointer++; | |
1223 | segment = expression (&exp); | |
1224 | if (segment != SEG_ABSOLUTE | |
a39116f1 | 1225 | #ifdef MANY_SEGMENTS |
6efd877d | 1226 | && !(segment >= SEG_E0 && segment <= SEG_UNKNOWN) |
a39116f1 | 1227 | #else |
6efd877d KR |
1228 | && segment != SEG_DATA |
1229 | && segment != SEG_TEXT | |
1230 | && segment != SEG_BSS | |
a39116f1 | 1231 | #endif |
6efd877d KR |
1232 | && segment != SEG_REGISTER) |
1233 | { | |
1234 | as_bad ("Bad expression: %s", segment_name (segment)); | |
1235 | ignore_rest_of_line (); | |
1236 | return; | |
1237 | } | |
1238 | *p = 0; | |
1239 | symbolP = symbol_find_or_make (name); | |
f8701a3f | 1240 | |
6efd877d | 1241 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 |
fecd2382 RP |
1242 | && symbolP->sy_desc == 0) out of this test |
1243 | because coff doesn't have those fields, and I | |
1244 | can't see when they'd ever be tripped. I don't | |
1245 | think I understand why they were here so I may | |
1246 | have introduced a bug. As recently as 1.37 didn't | |
1247 | have this test anyway. xoxorich. */ | |
f8701a3f | 1248 | |
6efd877d KR |
1249 | if (S_GET_SEGMENT (symbolP) == SEG_UNKNOWN |
1250 | && S_GET_VALUE (symbolP) == 0) | |
1251 | { | |
1252 | /* The name might be an undefined .global symbol; be | |
fecd2382 | 1253 | sure to keep the "external" bit. */ |
6efd877d KR |
1254 | S_SET_SEGMENT (symbolP, segment); |
1255 | S_SET_VALUE (symbolP, (valueT) (exp.X_add_number)); | |
1256 | } | |
1257 | else | |
1258 | { | |
1259 | as_bad ("Symbol %s already defined", name); | |
1260 | } | |
1261 | *p = c; | |
1262 | demand_empty_rest_of_line (); | |
1263 | } /* s_lsym() */ | |
1264 | ||
1265 | void | |
1266 | s_org () | |
1267 | { | |
1268 | register segT segment; | |
1269 | expressionS exp; | |
1270 | register long temp_fill; | |
1271 | register char *p; | |
1272 | /* | |
f8701a3f SC |
1273 | * Don't believe the documentation of BSD 4.2 AS. |
1274 | * There is no such thing as a sub-segment-relative origin. | |
1275 | * Any absolute origin is given a warning, then assumed to be segment-relative. | |
1276 | * Any segmented origin expression ("foo+42") had better be in the right | |
1277 | * segment or the .org is ignored. | |
1278 | * | |
1279 | * BSD 4.2 AS warns if you try to .org backwards. We cannot because we | |
1280 | * never know sub-segment sizes when we are reading code. | |
1281 | * BSD will crash trying to emit -ve numbers of filler bytes in certain | |
1282 | * .orgs. We don't crash, but see as-write for that code. | |
1283 | */ | |
6efd877d | 1284 | /* |
f8701a3f SC |
1285 | * Don't make frag if need_pass_2==1. |
1286 | */ | |
6efd877d KR |
1287 | segment = get_known_segmented_expression (&exp); |
1288 | if (*input_line_pointer == ',') | |
1289 | { | |
1290 | input_line_pointer++; | |
1291 | temp_fill = get_absolute_expression (); | |
1292 | } | |
1293 | else | |
1294 | temp_fill = 0; | |
1295 | if (!need_pass_2) | |
1296 | { | |
1297 | if (segment != now_seg && segment != SEG_ABSOLUTE) | |
1298 | as_bad ("Invalid segment \"%s\". Segment \"%s\" assumed.", | |
1299 | segment_name (segment), segment_name (now_seg)); | |
1300 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol, | |
1301 | exp.X_add_number, (char *) 0); | |
1302 | *p = temp_fill; | |
1303 | } /* if (ok to make frag) */ | |
1304 | demand_empty_rest_of_line (); | |
1305 | } /* s_org() */ | |
1306 | ||
1307 | void | |
1308 | s_set () | |
1309 | { | |
1310 | register char *name; | |
1311 | register char delim; | |
1312 | register char *end_name; | |
1313 | register symbolS *symbolP; | |
1314 | ||
1315 | /* | |
fecd2382 RP |
1316 | * Especial apologies for the random logic: |
1317 | * this just grew, and could be parsed much more simply! | |
1318 | * Dean in haste. | |
1319 | */ | |
6efd877d KR |
1320 | name = input_line_pointer; |
1321 | delim = get_symbol_end (); | |
1322 | end_name = input_line_pointer; | |
1323 | *end_name = delim; | |
1324 | SKIP_WHITESPACE (); | |
f8701a3f | 1325 | |
6efd877d KR |
1326 | if (*input_line_pointer != ',') |
1327 | { | |
1328 | *end_name = 0; | |
1329 | as_bad ("Expected comma after name \"%s\"", name); | |
1330 | *end_name = delim; | |
1331 | ignore_rest_of_line (); | |
1332 | return; | |
1333 | } | |
1334 | ||
1335 | input_line_pointer++; | |
1336 | *end_name = 0; | |
1337 | ||
1338 | if (name[0] == '.' && name[1] == '\0') | |
1339 | { | |
1340 | /* Turn '. = mumble' into a .org mumble */ | |
1341 | register segT segment; | |
1342 | expressionS exp; | |
1343 | register char *ptr; | |
1344 | ||
1345 | segment = get_known_segmented_expression (&exp); | |
f8701a3f | 1346 | |
6efd877d KR |
1347 | if (!need_pass_2) |
1348 | { | |
1349 | if (segment != now_seg && segment != SEG_ABSOLUTE) | |
1350 | as_bad ("Invalid segment \"%s\". Segment \"%s\" assumed.", | |
1351 | segment_name (segment), | |
1352 | segment_name (now_seg)); | |
1353 | ptr = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol, | |
1354 | exp.X_add_number, (char *) 0); | |
1355 | *ptr = 0; | |
1356 | } /* if (ok to make frag) */ | |
1357 | ||
1358 | *end_name = delim; | |
1359 | return; | |
1360 | } | |
1361 | ||
1362 | if ((symbolP = symbol_find (name)) == NULL | |
1363 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
1364 | { | |
1365 | symbolP = symbol_new (name, | |
1366 | SEG_UNKNOWN, | |
1367 | 0, | |
1368 | &zero_address_frag); | |
fecd2382 | 1369 | #ifdef OBJ_COFF |
6efd877d KR |
1370 | /* "set" symbols are local unless otherwise specified. */ |
1371 | SF_SET_LOCAL (symbolP); | |
fecd2382 | 1372 | #endif /* OBJ_COFF */ |
f8701a3f | 1373 | |
6efd877d | 1374 | } /* make a new symbol */ |
f8701a3f | 1375 | |
6efd877d | 1376 | symbol_table_insert (symbolP); |
f8701a3f | 1377 | |
6efd877d KR |
1378 | *end_name = delim; |
1379 | pseudo_set (symbolP); | |
1380 | demand_empty_rest_of_line (); | |
1381 | } /* s_set() */ | |
fecd2382 | 1382 | |
6efd877d KR |
1383 | void |
1384 | s_space (mult) | |
1385 | int mult; | |
b53ccaac | 1386 | { |
6efd877d KR |
1387 | long temp_repeat; |
1388 | register long temp_fill; | |
1389 | register char *p; | |
1390 | ||
1391 | /* Just like .fill, but temp_size = 1 */ | |
1392 | if (get_absolute_expression_and_terminator (&temp_repeat) == ',') | |
1393 | { | |
1394 | temp_fill = get_absolute_expression (); | |
1395 | } | |
1396 | else | |
1397 | { | |
1398 | input_line_pointer--; /* Backup over what was not a ','. */ | |
1399 | temp_fill = 0; | |
1400 | } | |
1401 | if (mult) | |
1402 | { | |
1403 | temp_fill *= mult; | |
1404 | } | |
1405 | if (temp_repeat <= 0) | |
1406 | { | |
1407 | as_warn ("Repeat < 0, .space ignored"); | |
1408 | ignore_rest_of_line (); | |
1409 | return; | |
1410 | } | |
1411 | if (!need_pass_2) | |
1412 | { | |
1413 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
1414 | temp_repeat, (char *) 0); | |
1415 | *p = temp_fill; | |
1416 | } | |
1417 | demand_empty_rest_of_line (); | |
1418 | } /* s_space() */ | |
fecd2382 RP |
1419 | |
1420 | void | |
6efd877d | 1421 | s_text () |
fecd2382 | 1422 | { |
6efd877d | 1423 | register int temp; |
f8701a3f | 1424 | |
6efd877d | 1425 | temp = get_absolute_expression (); |
a39116f1 | 1426 | #ifdef MANY_SEGMENTS |
6efd877d | 1427 | subseg_new (SEG_E0, (subsegT) temp); |
a39116f1 | 1428 | #else |
6efd877d | 1429 | subseg_new (SEG_TEXT, (subsegT) temp); |
a39116f1 | 1430 | #endif |
6efd877d KR |
1431 | demand_empty_rest_of_line (); |
1432 | } /* s_text() */ | |
fecd2382 | 1433 | \f |
6efd877d | 1434 | |
fecd2382 RP |
1435 | /*(JF was static, but can't be if machine dependent pseudo-ops are to use it */ |
1436 | ||
6efd877d KR |
1437 | void |
1438 | demand_empty_rest_of_line () | |
1439 | { | |
1440 | SKIP_WHITESPACE (); | |
1441 | if (is_end_of_line[*input_line_pointer]) | |
1442 | { | |
1443 | input_line_pointer++; | |
1444 | } | |
1445 | else | |
1446 | { | |
1447 | ignore_rest_of_line (); | |
1448 | } | |
1449 | /* Return having already swallowed end-of-line. */ | |
1450 | } /* Return pointing just after end-of-line. */ | |
fecd2382 RP |
1451 | |
1452 | void | |
6efd877d | 1453 | ignore_rest_of_line () /* For suspect lines: gives warning. */ |
fecd2382 | 1454 | { |
6efd877d | 1455 | if (!is_end_of_line[*input_line_pointer]) |
f8701a3f | 1456 | { |
6efd877d KR |
1457 | if (isprint (*input_line_pointer)) |
1458 | as_bad ("Rest of line ignored. First ignored character is `%c'.", | |
f8701a3f SC |
1459 | *input_line_pointer); |
1460 | else | |
6efd877d | 1461 | as_bad ("Rest of line ignored. First ignored character valued 0x%x.", |
f8701a3f SC |
1462 | *input_line_pointer); |
1463 | while (input_line_pointer < buffer_limit | |
6efd877d | 1464 | && !is_end_of_line[*input_line_pointer]) |
f8701a3f | 1465 | { |
6efd877d | 1466 | input_line_pointer++; |
f8701a3f SC |
1467 | } |
1468 | } | |
6efd877d KR |
1469 | input_line_pointer++; /* Return pointing just after end-of-line. */ |
1470 | know (is_end_of_line[input_line_pointer[-1]]); | |
fecd2382 RP |
1471 | } |
1472 | ||
1473 | /* | |
1474 | * pseudo_set() | |
1475 | * | |
1476 | * In: Pointer to a symbol. | |
1477 | * Input_line_pointer->expression. | |
1478 | * | |
1479 | * Out: Input_line_pointer->just after any whitespace after expression. | |
1480 | * Tried to set symbol to value of expression. | |
1481 | * Will change symbols type, value, and frag; | |
1482 | * May set need_pass_2 == 1. | |
1483 | */ | |
1484 | void | |
f8701a3f | 1485 | pseudo_set (symbolP) |
6efd877d | 1486 | symbolS *symbolP; |
fecd2382 | 1487 | { |
6efd877d KR |
1488 | expressionS exp; |
1489 | register segT segment; | |
fecd2382 | 1490 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
f8701a3f | 1491 | int ext; |
fecd2382 | 1492 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 1493 | |
6efd877d | 1494 | know (symbolP); /* NULL pointer is logic error. */ |
fecd2382 | 1495 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d | 1496 | ext = S_IS_EXTERNAL (symbolP); |
fecd2382 | 1497 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 1498 | |
6efd877d | 1499 | if ((segment = expression (&exp)) == SEG_ABSENT) |
f8701a3f | 1500 | { |
6efd877d KR |
1501 | as_bad ("Missing expression: absolute 0 assumed"); |
1502 | exp.X_seg = SEG_ABSOLUTE; | |
1503 | exp.X_add_number = 0; | |
f8701a3f SC |
1504 | } |
1505 | ||
1506 | switch (segment) | |
1507 | { | |
6efd877d KR |
1508 | case SEG_REGISTER: |
1509 | S_SET_SEGMENT (symbolP, SEG_REGISTER); | |
1510 | S_SET_VALUE (symbolP, exp.X_add_number); | |
1511 | symbolP->sy_frag = &zero_address_frag; | |
f8701a3f SC |
1512 | break; |
1513 | ||
1514 | case SEG_BIG: | |
6efd877d KR |
1515 | as_bad ("%s number invalid. Absolute 0 assumed.", |
1516 | exp.X_add_number > 0 ? "Bignum" : "Floating-Point"); | |
1517 | S_SET_SEGMENT (symbolP, SEG_ABSOLUTE); | |
fecd2382 | 1518 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
1519 | ext ? S_SET_EXTERNAL (symbolP) : |
1520 | S_CLEAR_EXTERNAL (symbolP); | |
fecd2382 | 1521 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
6efd877d KR |
1522 | S_SET_VALUE (symbolP, 0); |
1523 | symbolP->sy_frag = &zero_address_frag; | |
f8701a3f SC |
1524 | break; |
1525 | ||
1526 | case SEG_ABSENT: | |
6efd877d KR |
1527 | as_warn ("No expression: Using absolute 0"); |
1528 | S_SET_SEGMENT (symbolP, SEG_ABSOLUTE); | |
fecd2382 | 1529 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
1530 | ext ? S_SET_EXTERNAL (symbolP) : |
1531 | S_CLEAR_EXTERNAL (symbolP); | |
fecd2382 | 1532 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
6efd877d KR |
1533 | S_SET_VALUE (symbolP, 0); |
1534 | symbolP->sy_frag = &zero_address_frag; | |
f8701a3f SC |
1535 | break; |
1536 | ||
1537 | case SEG_DIFFERENCE: | |
1538 | if (exp.X_add_symbol && exp.X_subtract_symbol | |
6efd877d KR |
1539 | && (S_GET_SEGMENT (exp.X_add_symbol) == |
1540 | S_GET_SEGMENT (exp.X_subtract_symbol))) | |
1541 | { | |
1542 | if (exp.X_add_symbol->sy_frag != exp.X_subtract_symbol->sy_frag) | |
1543 | { | |
1544 | as_bad ("Unknown expression: symbols %s and %s are in different frags.", | |
1545 | S_GET_NAME (exp.X_add_symbol), S_GET_NAME (exp.X_subtract_symbol)); | |
1546 | need_pass_2++; | |
1547 | } | |
1548 | exp.X_add_number += S_GET_VALUE (exp.X_add_symbol) - | |
1549 | S_GET_VALUE (exp.X_subtract_symbol); | |
f8701a3f | 1550 | } |
6efd877d KR |
1551 | else |
1552 | as_bad ("Complex expression. Absolute segment assumed."); | |
f8701a3f | 1553 | case SEG_ABSOLUTE: |
6efd877d | 1554 | S_SET_SEGMENT (symbolP, SEG_ABSOLUTE); |
fecd2382 | 1555 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
1556 | ext ? S_SET_EXTERNAL (symbolP) : |
1557 | S_CLEAR_EXTERNAL (symbolP); | |
fecd2382 | 1558 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
6efd877d KR |
1559 | S_SET_VALUE (symbolP, exp.X_add_number); |
1560 | symbolP->sy_frag = &zero_address_frag; | |
f8701a3f SC |
1561 | break; |
1562 | ||
1563 | default: | |
a39116f1 | 1564 | #ifdef MANY_SEGMENTS |
6efd877d | 1565 | S_SET_SEGMENT (symbolP, segment); |
a39116f1 | 1566 | #else |
6efd877d KR |
1567 | switch (segment) |
1568 | { | |
1569 | case SEG_DATA: | |
1570 | S_SET_SEGMENT (symbolP, SEG_DATA); | |
1571 | break; | |
1572 | case SEG_TEXT: | |
1573 | S_SET_SEGMENT (symbolP, SEG_TEXT); | |
1574 | break; | |
1575 | case SEG_BSS: | |
1576 | S_SET_SEGMENT (symbolP, SEG_BSS); | |
1577 | break; | |
f8701a3f | 1578 | |
6efd877d KR |
1579 | default: |
1580 | as_fatal ("failed sanity check."); | |
1581 | } /* switch on segment */ | |
a39116f1 | 1582 | #endif |
fecd2382 | 1583 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
1584 | if (ext) |
1585 | { | |
1586 | S_SET_EXTERNAL (symbolP); | |
1587 | } | |
1588 | else | |
1589 | { | |
1590 | S_CLEAR_EXTERNAL (symbolP); | |
1591 | } /* if external */ | |
fecd2382 | 1592 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 1593 | |
6efd877d KR |
1594 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (exp.X_add_symbol)); |
1595 | symbolP->sy_frag = exp.X_add_symbol->sy_frag; | |
f8701a3f SC |
1596 | break; |
1597 | ||
1598 | case SEG_PASS1: /* Not an error. Just try another pass. */ | |
6efd877d KR |
1599 | symbolP->sy_forward = exp.X_add_symbol; |
1600 | as_bad ("Unknown expression"); | |
1601 | know (need_pass_2 == 1); | |
f8701a3f SC |
1602 | break; |
1603 | ||
1604 | case SEG_UNKNOWN: | |
6efd877d | 1605 | symbolP->sy_forward = exp.X_add_symbol; |
f8701a3f SC |
1606 | /* as_warn("unknown symbol"); */ |
1607 | /* need_pass_2 = 1; */ | |
1608 | break; | |
1609 | ||
1610 | ||
1611 | ||
1612 | } | |
fecd2382 RP |
1613 | } |
1614 | \f | |
1615 | /* | |
1616 | * cons() | |
1617 | * | |
1618 | * CONStruct more frag of .bytes, or .words etc. | |
1619 | * Should need_pass_2 be 1 then emit no frag(s). | |
1620 | * This understands EXPRESSIONS, as opposed to big_cons(). | |
1621 | * | |
1622 | * Bug (?) | |
1623 | * | |
1624 | * This has a split personality. We use expression() to read the | |
1625 | * value. We can detect if the value won't fit in a byte or word. | |
1626 | * But we can't detect if expression() discarded significant digits | |
1627 | * in the case of a long. Not worth the crocks required to fix it. | |
1628 | */ | |
1629 | ||
6efd877d KR |
1630 | /* worker to do .byte etc statements */ |
1631 | /* clobbers input_line_pointer, checks */ | |
1632 | /* end-of-line. */ | |
1633 | void | |
1634 | cons (nbytes) | |
1635 | register unsigned int nbytes; /* 1=.byte, 2=.word, 4=.long */ | |
fecd2382 | 1636 | { |
f8701a3f | 1637 | register char c; |
6efd877d | 1638 | register long mask; /* High-order bits we will left-truncate, */ |
f8701a3f | 1639 | /* but includes sign bit also. */ |
6efd877d KR |
1640 | register long get; /* what we get */ |
1641 | register long use; /* get after truncation. */ | |
1642 | register long unmask; /* what bits we will store */ | |
1643 | register char *p; | |
1644 | register segT segment; | |
1645 | expressionS exp; | |
f8701a3f SC |
1646 | |
1647 | /* | |
1648 | * Input_line_pointer->1st char after pseudo-op-code and could legally | |
1649 | * be a end-of-line. (Or, less legally an eof - which we cope with.) | |
1650 | */ | |
1651 | /* JF << of >= number of bits in the object is undefined. In particular | |
1652 | SPARC (Sun 4) has problems */ | |
1653 | ||
6efd877d KR |
1654 | if (nbytes >= sizeof (long)) |
1655 | { | |
f8701a3f | 1656 | mask = 0; |
6efd877d KR |
1657 | } |
1658 | else | |
1659 | { | |
1660 | mask = ~0 << (BITS_PER_CHAR * nbytes); /* Don't store these bits. */ | |
1661 | } /* bigger than a long */ | |
f8701a3f | 1662 | |
6efd877d | 1663 | unmask = ~mask; /* Do store these bits. */ |
f8701a3f | 1664 | |
fecd2382 | 1665 | #ifdef NEVER |
f8701a3f | 1666 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; |
6efd877d | 1667 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
fecd2382 | 1668 | #endif |
f8701a3f SC |
1669 | |
1670 | /* | |
1671 | * The following awkward logic is to parse ZERO or more expressions, | |
1672 | * comma seperated. Recall an expression includes its leading & | |
1673 | * trailing blanks. We fake a leading ',' if there is (supposed to | |
1674 | * be) a 1st expression, and keep demanding 1 expression for each ','. | |
1675 | */ | |
6efd877d KR |
1676 | if (is_it_end_of_statement ()) |
1677 | { | |
1678 | c = 0; /* Skip loop. */ | |
1679 | input_line_pointer++; /* Matches end-of-loop 'correction'. */ | |
1680 | } | |
1681 | else | |
1682 | { | |
1683 | c = ','; | |
1684 | } /* if the end else fake it */ | |
f8701a3f SC |
1685 | |
1686 | /* Do loop. */ | |
6efd877d KR |
1687 | while (c == ',') |
1688 | { | |
fecd2382 | 1689 | #ifdef WANT_BITFIELDS |
f8701a3f SC |
1690 | unsigned int bits_available = BITS_PER_CHAR * nbytes; |
1691 | /* used for error messages and rescanning */ | |
1692 | char *hold = input_line_pointer; | |
fecd2382 | 1693 | #endif /* WANT_BITFIELDS */ |
f8701a3f | 1694 | #ifdef MRI |
6efd877d KR |
1695 | if (*input_line_pointer == '\'') |
1696 | { | |
1697 | /* An MRI style string, cut into as many bytes as will fit | |
f8701a3f SC |
1698 | into a nbyte chunk, left justify if necessary, and sepatate |
1699 | with commas so we can try again later */ | |
6efd877d KR |
1700 | int scan = 0; |
1701 | unsigned int result = 0; | |
1702 | input_line_pointer++; | |
1703 | for (scan = 0; scan < nbytes; scan++) | |
f8701a3f | 1704 | { |
6efd877d KR |
1705 | if (*input_line_pointer == '\'') |
1706 | { | |
1707 | if (input_line_pointer[1] == '\'') | |
1708 | { | |
1709 | input_line_pointer++; | |
1710 | } | |
1711 | else | |
1712 | break; | |
1713 | } | |
1714 | result = (result << 8) | (*input_line_pointer++); | |
f8701a3f | 1715 | } |
6efd877d KR |
1716 | |
1717 | /* Left justify */ | |
1718 | while (scan < nbytes) | |
1719 | { | |
1720 | result <<= 8; | |
1721 | scan++; | |
1722 | } | |
1723 | /* Create correct expression */ | |
1724 | exp.X_add_symbol = 0; | |
1725 | exp.X_add_number = result; | |
1726 | exp.X_seg = segment = SEG_ABSOLUTE; | |
1727 | /* Fake it so that we can read the next char too */ | |
1728 | if (input_line_pointer[0] != '\'' || | |
1729 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
1730 | { | |
1731 | input_line_pointer -= 2; | |
1732 | input_line_pointer[0] = ','; | |
1733 | input_line_pointer[1] = '\''; | |
1734 | } | |
1735 | else | |
1736 | input_line_pointer++; | |
1737 | ||
f8701a3f | 1738 | } |
6efd877d | 1739 | else |
f8701a3f | 1740 | #endif |
6efd877d KR |
1741 | /* At least scan over the expression. */ |
1742 | segment = expression (&exp); | |
f8701a3f | 1743 | |
a39116f1 | 1744 | #ifdef WANT_BITFIELDS |
f8701a3f SC |
1745 | /* Some other assemblers, (eg, asm960), allow |
1746 | bitfields after ".byte" as w:x,y:z, where w and | |
1747 | y are bitwidths and x and y are values. They | |
1748 | then pack them all together. We do a little | |
1749 | better in that we allow them in words, longs, | |
1750 | etc. and we'll pack them in target byte order | |
1751 | for you. | |
6efd877d | 1752 | |
f8701a3f SC |
1753 | The rules are: pack least significat bit first, |
1754 | if a field doesn't entirely fit, put it in the | |
1755 | next unit. Overflowing the bitfield is | |
1756 | explicitly *not* even a warning. The bitwidth | |
1757 | should be considered a "mask". | |
6efd877d | 1758 | |
f8701a3f SC |
1759 | FIXME-SOMEDAY: If this is considered generally |
1760 | useful, this logic should probably be reworked. | |
1761 | xoxorich. */ | |
1762 | ||
6efd877d KR |
1763 | if (*input_line_pointer == ':') |
1764 | { /* bitfields */ | |
f8701a3f SC |
1765 | long value = 0; |
1766 | ||
6efd877d KR |
1767 | for (;;) |
1768 | { | |
f8701a3f | 1769 | unsigned long width; |
6efd877d KR |
1770 | |
1771 | if (*input_line_pointer != ':') | |
1772 | { | |
f8701a3f SC |
1773 | input_line_pointer = hold; |
1774 | break; | |
6efd877d KR |
1775 | } /* next piece is not a bitfield */ |
1776 | ||
f8701a3f SC |
1777 | /* In the general case, we can't allow |
1778 | full expressions with symbol | |
1779 | differences and such. The relocation | |
1780 | entries for symbols not defined in this | |
1781 | assembly would require arbitrary field | |
1782 | widths, positions, and masks which most | |
1783 | of our current object formats don't | |
1784 | support. | |
6efd877d | 1785 | |
f8701a3f SC |
1786 | In the specific case where a symbol |
1787 | *is* defined in this assembly, we | |
1788 | *could* build fixups and track it, but | |
1789 | this could lead to confusion for the | |
1790 | backends. I'm lazy. I'll take any | |
1791 | SEG_ABSOLUTE. I think that means that | |
1792 | you can use a previous .set or | |
1793 | .equ type symbol. xoxorich. */ | |
6efd877d KR |
1794 | |
1795 | if (segment == SEG_ABSENT) | |
1796 | { | |
1797 | as_warn ("Using a bit field width of zero."); | |
f8701a3f SC |
1798 | exp.X_add_number = 0; |
1799 | segment = SEG_ABSOLUTE; | |
6efd877d KR |
1800 | } /* implied zero width bitfield */ |
1801 | ||
1802 | if (segment != SEG_ABSOLUTE) | |
1803 | { | |
f8701a3f | 1804 | *input_line_pointer = '\0'; |
6efd877d | 1805 | as_bad ("Field width \"%s\" too complex for a bitfield.\n", hold); |
f8701a3f | 1806 | *input_line_pointer = ':'; |
6efd877d | 1807 | demand_empty_rest_of_line (); |
f8701a3f | 1808 | return; |
6efd877d KR |
1809 | } /* too complex */ |
1810 | ||
1811 | if ((width = exp.X_add_number) > (BITS_PER_CHAR * nbytes)) | |
1812 | { | |
1813 | as_warn ("Field width %d too big to fit in %d bytes: truncated to %d bits.", | |
1814 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
f8701a3f | 1815 | width = BITS_PER_CHAR * nbytes; |
6efd877d KR |
1816 | } /* too big */ |
1817 | ||
1818 | if (width > bits_available) | |
1819 | { | |
f8701a3f SC |
1820 | /* FIXME-SOMEDAY: backing up and |
1821 | reparsing is wasteful */ | |
1822 | input_line_pointer = hold; | |
1823 | exp.X_add_number = value; | |
1824 | break; | |
6efd877d KR |
1825 | } /* won't fit */ |
1826 | ||
1827 | hold = ++input_line_pointer; /* skip ':' */ | |
1828 | ||
1829 | if ((segment = expression (&exp)) != SEG_ABSOLUTE) | |
1830 | { | |
f8701a3f | 1831 | char cache = *input_line_pointer; |
6efd877d | 1832 | |
f8701a3f | 1833 | *input_line_pointer = '\0'; |
6efd877d | 1834 | as_bad ("Field value \"%s\" too complex for a bitfield.\n", hold); |
f8701a3f | 1835 | *input_line_pointer = cache; |
6efd877d | 1836 | demand_empty_rest_of_line (); |
f8701a3f | 1837 | return; |
6efd877d KR |
1838 | } /* too complex */ |
1839 | ||
f8701a3f | 1840 | value |= (~(-1 << width) & exp.X_add_number) |
6efd877d KR |
1841 | << ((BITS_PER_CHAR * nbytes) - bits_available); |
1842 | ||
f8701a3f | 1843 | if ((bits_available -= width) == 0 |
6efd877d KR |
1844 | || is_it_end_of_statement () |
1845 | || *input_line_pointer != ',') | |
1846 | { | |
f8701a3f | 1847 | break; |
6efd877d | 1848 | } /* all the bitfields we're gonna get */ |
f8701a3f SC |
1849 | |
1850 | hold = ++input_line_pointer; | |
6efd877d KR |
1851 | segment = expression (&exp); |
1852 | } /* forever loop */ | |
f8701a3f SC |
1853 | |
1854 | exp.X_add_number = value; | |
1855 | segment = SEG_ABSOLUTE; | |
6efd877d | 1856 | } /* if looks like a bitfield */ |
a39116f1 | 1857 | #endif /* WANT_BITFIELDS */ |
f8701a3f | 1858 | |
6efd877d KR |
1859 | if (!need_pass_2) |
1860 | { /* Still worthwhile making frags. */ | |
f8701a3f SC |
1861 | |
1862 | /* Don't call this if we are going to junk this pass anyway! */ | |
6efd877d | 1863 | know (segment != SEG_PASS1); |
f8701a3f | 1864 | |
6efd877d KR |
1865 | if (segment == SEG_DIFFERENCE && exp.X_add_symbol == NULL) |
1866 | { | |
1867 | as_bad ("Subtracting symbol \"%s\"(segment\"%s\") is too hard. Absolute segment assumed.", | |
1868 | S_GET_NAME (exp.X_subtract_symbol), | |
1869 | segment_name (S_GET_SEGMENT (exp.X_subtract_symbol))); | |
f8701a3f SC |
1870 | segment = SEG_ABSOLUTE; |
1871 | /* Leave exp . X_add_number alone. */ | |
1872 | } | |
6efd877d KR |
1873 | p = frag_more (nbytes); |
1874 | switch (segment) | |
1875 | { | |
f8701a3f | 1876 | case SEG_BIG: |
6efd877d KR |
1877 | as_bad ("%s number invalid. Absolute 0 assumed.", |
1878 | exp.X_add_number > 0 ? "Bignum" : "Floating-Point"); | |
1879 | md_number_to_chars (p, (long) 0, nbytes); | |
f8701a3f SC |
1880 | break; |
1881 | ||
1882 | case SEG_ABSENT: | |
6efd877d KR |
1883 | as_warn ("0 assumed for missing expression"); |
1884 | exp.X_add_number = 0; | |
1885 | know (exp.X_add_symbol == NULL); | |
f8701a3f SC |
1886 | /* fall into SEG_ABSOLUTE */ |
1887 | case SEG_ABSOLUTE: | |
6efd877d | 1888 | get = exp.X_add_number; |
f8701a3f SC |
1889 | use = get & unmask; |
1890 | if ((get & mask) && (get & mask) != mask) | |
6efd877d KR |
1891 | { /* Leading bits contain both 0s & 1s. */ |
1892 | as_warn ("Value 0x%x truncated to 0x%x.", get, use); | |
1893 | } | |
1894 | md_number_to_chars (p, use, nbytes); /* put bytes in right order. */ | |
f8701a3f SC |
1895 | break; |
1896 | ||
1897 | case SEG_DIFFERENCE: | |
fecd2382 | 1898 | #ifndef WORKING_DOT_WORD |
6efd877d KR |
1899 | if (nbytes == 2) |
1900 | { | |
f8701a3f SC |
1901 | struct broken_word *x; |
1902 | ||
6efd877d KR |
1903 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); |
1904 | x->next_broken_word = broken_words; | |
1905 | broken_words = x; | |
1906 | x->frag = frag_now; | |
1907 | x->word_goes_here = p; | |
1908 | x->dispfrag = 0; | |
1909 | x->add = exp.X_add_symbol; | |
1910 | x->sub = exp.X_subtract_symbol; | |
1911 | x->addnum = exp.X_add_number; | |
1912 | x->added = 0; | |
f8701a3f SC |
1913 | new_broken_words++; |
1914 | break; | |
1915 | } | |
1916 | /* Else Fall through into. . . */ | |
fecd2382 | 1917 | #endif |
f8701a3f SC |
1918 | default: |
1919 | case SEG_UNKNOWN: | |
fecd2382 | 1920 | #ifdef TC_NS32K |
f8701a3f | 1921 | fix_new_ns32k (frag_now, p - frag_now->fr_literal, nbytes, |
6efd877d KR |
1922 | exp.X_add_symbol, exp.X_subtract_symbol, |
1923 | exp.X_add_number, 0, 0, 2, 0, 0); | |
fecd2382 | 1924 | #else |
f8701a3f SC |
1925 | # if defined(TC_SPARC) || defined(TC_A29K) |
1926 | fix_new (frag_now, p - frag_now->fr_literal, nbytes, | |
6efd877d KR |
1927 | exp.X_add_symbol, exp.X_subtract_symbol, |
1928 | exp.X_add_number, 0, RELOC_32); | |
f8701a3f SC |
1929 | # else |
1930 | # if defined(TC_H8300) | |
1931 | fix_new (frag_now, p - frag_now->fr_literal, nbytes, | |
6efd877d KR |
1932 | exp.X_add_symbol, exp.X_subtract_symbol, |
1933 | exp.X_add_number, 0, R_RELWORD); | |
f8701a3f SC |
1934 | |
1935 | # else | |
6efd877d | 1936 | #ifdef NO_RELOC |
f8701a3f | 1937 | fix_new (frag_now, p - frag_now->fr_literal, nbytes, |
6efd877d KR |
1938 | exp.X_add_symbol, exp.X_subtract_symbol, |
1939 | exp.X_add_number, 0, NO_RELOC); | |
1940 | #else | |
1941 | fix_new (frag_now, p - frag_now->fr_literal, nbytes, | |
1942 | exp.X_add_symbol, exp.X_subtract_symbol, | |
1943 | exp.X_add_number, 0, 0); | |
1944 | #endif /* NO_RELOC */ | |
1945 | # endif /* tc_h8300 */ | |
1946 | # endif /* tc_sparc|tc_a29k */ | |
fecd2382 | 1947 | #endif /* TC_NS32K */ |
f8701a3f | 1948 | break; |
6efd877d KR |
1949 | } /* switch(segment) */ |
1950 | } /* if (!need_pass_2) */ | |
f8701a3f | 1951 | c = *input_line_pointer++; |
6efd877d KR |
1952 | } /* while(c==',') */ |
1953 | input_line_pointer--; /* Put terminator back into stream. */ | |
1954 | demand_empty_rest_of_line (); | |
1955 | } /* cons() */ | |
fecd2382 RP |
1956 | \f |
1957 | /* | |
1958 | * big_cons() | |
1959 | * | |
1960 | * CONStruct more frag(s) of .quads, or .octa etc. | |
1961 | * Makes 0 or more new frags. | |
1962 | * If need_pass_2 == 1, generate no frag. | |
1963 | * This understands only bignums, not expressions. Cons() understands | |
1964 | * expressions. | |
1965 | * | |
1966 | * Constants recognised are '0...'(octal) '0x...'(hex) '...'(decimal). | |
1967 | * | |
1968 | * This creates objects with struct obstack_control objs, destroying | |
1969 | * any context objs held about a partially completed object. Beware! | |
1970 | * | |
1971 | * | |
1972 | * I think it sucks to have 2 different types of integers, with 2 | |
1973 | * routines to read them, store them etc. | |
1974 | * It would be nicer to permit bignums in expressions and only | |
1975 | * complain if the result overflowed. However, due to "efficiency"... | |
1976 | */ | |
1977 | /* worker to do .quad etc statements */ | |
1978 | /* clobbers input_line_pointer, checks */ | |
1979 | /* end-of-line. */ | |
1980 | /* 8=.quad 16=.octa ... */ | |
1981 | ||
6efd877d KR |
1982 | void |
1983 | big_cons (nbytes) | |
f8701a3f | 1984 | register int nbytes; |
fecd2382 | 1985 | { |
6efd877d | 1986 | register char c; /* input_line_pointer->c. */ |
f8701a3f | 1987 | register int radix; |
6efd877d KR |
1988 | register long length; /* Number of chars in an object. */ |
1989 | register int digit; /* Value of 1 digit. */ | |
1990 | register int carry; /* For multi-precision arithmetic. */ | |
1991 | register int work; /* For multi-precision arithmetic. */ | |
1992 | register char *p; /* For multi-precision arithmetic. */ | |
f8701a3f SC |
1993 | |
1994 | extern char hex_value[]; /* In hex_value.c. */ | |
1995 | ||
1996 | /* | |
1997 | * The following awkward logic is to parse ZERO or more strings, | |
1998 | * comma seperated. Recall an expression includes its leading & | |
1999 | * trailing blanks. We fake a leading ',' if there is (supposed to | |
2000 | * be) a 1st expression, and keep demanding 1 expression for each ','. | |
2001 | */ | |
6efd877d | 2002 | if (is_it_end_of_statement ()) |
f8701a3f SC |
2003 | { |
2004 | c = 0; /* Skip loop. */ | |
2005 | } | |
2006 | else | |
2007 | { | |
2008 | c = ','; /* Do loop. */ | |
6efd877d | 2009 | --input_line_pointer; |
f8701a3f SC |
2010 | } |
2011 | while (c == ',') | |
2012 | { | |
6efd877d KR |
2013 | ++input_line_pointer; |
2014 | SKIP_WHITESPACE (); | |
2015 | c = *input_line_pointer; | |
f8701a3f SC |
2016 | /* C contains 1st non-blank character of what we hope is a number. */ |
2017 | if (c == '0') | |
2018 | { | |
6efd877d KR |
2019 | c = *++input_line_pointer; |
2020 | if (c == 'x' || c == 'X') | |
fecd2382 | 2021 | { |
6efd877d | 2022 | c = *++input_line_pointer; |
f8701a3f | 2023 | radix = 16; |
fecd2382 | 2024 | } |
f8701a3f | 2025 | else |
fecd2382 | 2026 | { |
f8701a3f | 2027 | radix = 8; |
fecd2382 | 2028 | } |
f8701a3f SC |
2029 | } |
2030 | else | |
2031 | { | |
2032 | radix = 10; | |
2033 | } | |
2034 | /* | |
2035 | * This feature (?) is here to stop people worrying about | |
2036 | * mysterious zero constants: which is what they get when | |
2037 | * they completely omit digits. | |
2038 | */ | |
6efd877d KR |
2039 | if (hex_value[c] >= radix) |
2040 | { | |
2041 | as_bad ("Missing digits. 0 assumed."); | |
2042 | } | |
2043 | bignum_high = bignum_low - 1; /* Start constant with 0 chars. */ | |
2044 | for (; (digit = hex_value[c]) < radix; c = *++input_line_pointer) | |
f8701a3f SC |
2045 | { |
2046 | /* Multiply existing number by radix, then add digit. */ | |
2047 | carry = digit; | |
6efd877d | 2048 | for (p = bignum_low; p <= bignum_high; p++) |
fecd2382 | 2049 | { |
f8701a3f SC |
2050 | work = (*p & MASK_CHAR) * radix + carry; |
2051 | *p = work & MASK_CHAR; | |
2052 | carry = work >> BITS_PER_CHAR; | |
fecd2382 | 2053 | } |
f8701a3f SC |
2054 | if (carry) |
2055 | { | |
6efd877d KR |
2056 | grow_bignum (); |
2057 | *bignum_high = carry & MASK_CHAR; | |
2058 | know ((carry & ~MASK_CHAR) == 0); | |
f8701a3f SC |
2059 | } |
2060 | } | |
2061 | length = bignum_high - bignum_low + 1; | |
2062 | if (length > nbytes) | |
2063 | { | |
6efd877d | 2064 | as_warn ("Most significant bits truncated in integer constant."); |
f8701a3f SC |
2065 | } |
2066 | else | |
2067 | { | |
2068 | register long leading_zeroes; | |
fecd2382 | 2069 | |
6efd877d KR |
2070 | for (leading_zeroes = nbytes - length; |
2071 | leading_zeroes; | |
2072 | leading_zeroes--) | |
a39116f1 | 2073 | { |
6efd877d KR |
2074 | grow_bignum (); |
2075 | *bignum_high = 0; | |
a39116f1 | 2076 | } |
f8701a3f | 2077 | } |
6efd877d | 2078 | if (!need_pass_2) |
f8701a3f SC |
2079 | { |
2080 | p = frag_more (nbytes); | |
6efd877d | 2081 | bcopy (bignum_low, p, (int) nbytes); |
f8701a3f SC |
2082 | } |
2083 | /* C contains character after number. */ | |
6efd877d KR |
2084 | SKIP_WHITESPACE (); |
2085 | c = *input_line_pointer; | |
f8701a3f SC |
2086 | /* C contains 1st non-blank character after number. */ |
2087 | } | |
6efd877d KR |
2088 | demand_empty_rest_of_line (); |
2089 | } /* big_cons() */ | |
f8701a3f | 2090 | |
6efd877d KR |
2091 | /* Extend bignum by 1 char. */ |
2092 | static void | |
2093 | grow_bignum () | |
2094 | { | |
f8701a3f SC |
2095 | register long length; |
2096 | ||
6efd877d | 2097 | bignum_high++; |
f8701a3f SC |
2098 | if (bignum_high >= bignum_limit) |
2099 | { | |
2100 | length = bignum_limit - bignum_low; | |
6efd877d | 2101 | bignum_low = xrealloc (bignum_low, length + length); |
f8701a3f SC |
2102 | bignum_high = bignum_low + length; |
2103 | bignum_limit = bignum_low + length + length; | |
2104 | } | |
6efd877d | 2105 | } /* grow_bignum(); */ |
fecd2382 RP |
2106 | \f |
2107 | /* | |
2108 | * float_cons() | |
2109 | * | |
2110 | * CONStruct some more frag chars of .floats .ffloats etc. | |
2111 | * Makes 0 or more new frags. | |
2112 | * If need_pass_2 == 1, no frags are emitted. | |
2113 | * This understands only floating literals, not expressions. Sorry. | |
2114 | * | |
2115 | * A floating constant is defined by atof_generic(), except it is preceded | |
2116 | * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
2117 | * reading, I decided to be incompatible. This always tries to give you | |
2118 | * rounded bits to the precision of the pseudo-op. Former AS did premature | |
2119 | * truncatation, restored noisy bits instead of trailing 0s AND gave you | |
2120 | * a choice of 2 flavours of noise according to which of 2 floating-point | |
2121 | * scanners you directed AS to use. | |
2122 | * | |
2123 | * In: input_line_pointer->whitespace before, or '0' of flonum. | |
2124 | * | |
2125 | */ | |
2126 | ||
6efd877d KR |
2127 | void /* JF was static, but can't be if VAX.C is goning to use it */ |
2128 | float_cons (float_type) /* Worker to do .float etc statements. */ | |
2129 | /* Clobbers input_line-pointer, checks end-of-line. */ | |
f8701a3f | 2130 | register int float_type; /* 'f':.ffloat ... 'F':.float ... */ |
fecd2382 | 2131 | { |
6efd877d | 2132 | register char *p; |
f8701a3f | 2133 | register char c; |
6efd877d KR |
2134 | int length; /* Number of chars in an object. */ |
2135 | register char *err; /* Error from scanning floating literal. */ | |
2136 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
f8701a3f SC |
2137 | |
2138 | /* | |
2139 | * The following awkward logic is to parse ZERO or more strings, | |
2140 | * comma seperated. Recall an expression includes its leading & | |
2141 | * trailing blanks. We fake a leading ',' if there is (supposed to | |
2142 | * be) a 1st expression, and keep demanding 1 expression for each ','. | |
2143 | */ | |
6efd877d | 2144 | if (is_it_end_of_statement ()) |
f8701a3f SC |
2145 | { |
2146 | c = 0; /* Skip loop. */ | |
6efd877d | 2147 | ++input_line_pointer; /*->past termintor. */ |
f8701a3f SC |
2148 | } |
2149 | else | |
2150 | { | |
2151 | c = ','; /* Do loop. */ | |
2152 | } | |
2153 | while (c == ',') | |
2154 | { | |
2155 | /* input_line_pointer->1st char of a flonum (we hope!). */ | |
6efd877d | 2156 | SKIP_WHITESPACE (); |
f8701a3f SC |
2157 | /* Skip any 0{letter} that may be present. Don't even check if the |
2158 | * letter is legal. Someone may invent a "z" format and this routine | |
2159 | * has no use for such information. Lusers beware: you get | |
2160 | * diagnostics if your input is ill-conditioned. | |
2161 | */ | |
2162 | ||
6efd877d KR |
2163 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) |
2164 | input_line_pointer += 2; | |
f8701a3f SC |
2165 | |
2166 | err = md_atof (float_type, temp, &length); | |
6efd877d KR |
2167 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); |
2168 | know (length > 0); | |
2169 | if (*err) | |
f8701a3f | 2170 | { |
6efd877d KR |
2171 | as_bad ("Bad floating literal: %s", err); |
2172 | ignore_rest_of_line (); | |
f8701a3f SC |
2173 | /* Input_line_pointer->just after end-of-line. */ |
2174 | c = 0; /* Break out of loop. */ | |
2175 | } | |
2176 | else | |
2177 | { | |
6efd877d | 2178 | if (!need_pass_2) |
a39116f1 | 2179 | { |
f8701a3f SC |
2180 | p = frag_more (length); |
2181 | bcopy (temp, p, length); | |
a39116f1 | 2182 | } |
6efd877d KR |
2183 | SKIP_WHITESPACE (); |
2184 | c = *input_line_pointer++; | |
f8701a3f SC |
2185 | /* C contains 1st non-white character after number. */ |
2186 | /* input_line_pointer->just after terminator (c). */ | |
542e1629 | 2187 | } |
f8701a3f | 2188 | } |
6efd877d KR |
2189 | --input_line_pointer; /*->terminator (is not ','). */ |
2190 | demand_empty_rest_of_line (); | |
f8701a3f | 2191 | } /* float_cons() */ |
fecd2382 RP |
2192 | \f |
2193 | /* | |
2194 | * stringer() | |
2195 | * | |
2196 | * We read 0 or more ',' seperated, double-quoted strings. | |
2197 | * | |
2198 | * Caller should have checked need_pass_2 is FALSE because we don't check it. | |
2199 | */ | |
a39116f1 RP |
2200 | |
2201 | ||
6efd877d KR |
2202 | void |
2203 | stringer (append_zero) /* Worker to do .ascii etc statements. */ | |
2204 | /* Checks end-of-line. */ | |
f8701a3f | 2205 | register int append_zero; /* 0: don't append '\0', else 1 */ |
fecd2382 | 2206 | { |
f8701a3f | 2207 | /* register char * p; JF unused */ |
6efd877d | 2208 | /* register int length; JF unused *//* Length of string we read, excluding */ |
f8701a3f SC |
2209 | /* trailing '\0' implied by closing quote. */ |
2210 | /* register char * where; JF unused */ | |
2211 | /* register fragS * fragP; JF unused */ | |
2212 | register unsigned int c; | |
6efd877d | 2213 | |
f8701a3f SC |
2214 | /* |
2215 | * The following awkward logic is to parse ZERO or more strings, | |
2216 | * comma seperated. Recall a string expression includes spaces | |
2217 | * before the opening '\"' and spaces after the closing '\"'. | |
2218 | * We fake a leading ',' if there is (supposed to be) | |
2219 | * a 1st, expression. We keep demanding expressions for each | |
2220 | * ','. | |
2221 | */ | |
6efd877d KR |
2222 | if (is_it_end_of_statement ()) |
2223 | { | |
2224 | c = 0; /* Skip loop. */ | |
2225 | ++input_line_pointer; /* Compensate for end of loop. */ | |
2226 | } | |
f8701a3f | 2227 | else |
6efd877d KR |
2228 | { |
2229 | c = ','; /* Do loop. */ | |
2230 | } | |
2231 | while (c == ',' || c == '<' || c == '"') | |
2232 | { | |
2233 | SKIP_WHITESPACE (); | |
2234 | switch (*input_line_pointer) | |
2235 | { | |
2236 | case '\"': | |
2237 | ++input_line_pointer; /*->1st char of string. */ | |
2238 | while (is_a_char (c = next_char_of_string ())) | |
2239 | { | |
2240 | FRAG_APPEND_1_CHAR (c); | |
2241 | } | |
2242 | if (append_zero) | |
2243 | { | |
2244 | FRAG_APPEND_1_CHAR (0); | |
2245 | } | |
2246 | know (input_line_pointer[-1] == '\"'); | |
2247 | break; | |
2248 | case '<': | |
2249 | input_line_pointer++; | |
2250 | c = get_single_number (); | |
2251 | FRAG_APPEND_1_CHAR (c); | |
2252 | if (*input_line_pointer != '>') | |
2253 | { | |
2254 | as_bad ("Expected <nn>"); | |
2255 | } | |
2256 | input_line_pointer++; | |
2257 | break; | |
2258 | case ',': | |
2259 | input_line_pointer++; | |
2260 | break; | |
2261 | } | |
2262 | SKIP_WHITESPACE (); | |
2263 | c = *input_line_pointer; | |
f8701a3f | 2264 | } |
f8701a3f | 2265 | |
6efd877d KR |
2266 | demand_empty_rest_of_line (); |
2267 | } /* stringer() */ | |
fecd2382 | 2268 | \f |
6efd877d | 2269 | /* FIXME-SOMEDAY: I had trouble here on characters with the |
f8701a3f SC |
2270 | high bits set. We'll probably also have trouble with |
2271 | multibyte chars, wide chars, etc. Also be careful about | |
2272 | returning values bigger than 1 byte. xoxorich. */ | |
fecd2382 | 2273 | |
6efd877d KR |
2274 | unsigned int |
2275 | next_char_of_string () | |
2276 | { | |
2277 | register unsigned int c; | |
2278 | ||
2279 | c = *input_line_pointer++ & CHAR_MASK; | |
2280 | switch (c) | |
2281 | { | |
2282 | case '\"': | |
2283 | c = NOT_A_CHAR; | |
2284 | break; | |
2285 | ||
2286 | case '\\': | |
2287 | switch (c = *input_line_pointer++) | |
2288 | { | |
2289 | case 'b': | |
2290 | c = '\b'; | |
2291 | break; | |
2292 | ||
2293 | case 'f': | |
2294 | c = '\f'; | |
2295 | break; | |
2296 | ||
2297 | case 'n': | |
2298 | c = '\n'; | |
2299 | break; | |
2300 | ||
2301 | case 'r': | |
2302 | c = '\r'; | |
2303 | break; | |
2304 | ||
2305 | case 't': | |
2306 | c = '\t'; | |
2307 | break; | |
2308 | ||
fecd2382 | 2309 | #ifdef BACKSLASH_V |
6efd877d KR |
2310 | case 'v': |
2311 | c = '\013'; | |
2312 | break; | |
fecd2382 | 2313 | #endif |
6efd877d KR |
2314 | |
2315 | case '\\': | |
2316 | case '"': | |
2317 | break; /* As itself. */ | |
2318 | ||
2319 | case '0': | |
2320 | case '1': | |
2321 | case '2': | |
2322 | case '3': | |
2323 | case '4': | |
2324 | case '5': | |
2325 | case '6': | |
2326 | case '7': | |
2327 | case '8': | |
2328 | case '9': | |
2329 | { | |
2330 | long number; | |
2331 | ||
2332 | for (number = 0; isdigit (c); c = *input_line_pointer++) | |
2333 | { | |
2334 | number = number * 8 + c - '0'; | |
2335 | } | |
2336 | c = number & 0xff; | |
2337 | } | |
2338 | --input_line_pointer; | |
2339 | break; | |
2340 | ||
2341 | case '\n': | |
2342 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ | |
2343 | as_warn ("Unterminated string: Newline inserted."); | |
2344 | c = '\n'; | |
2345 | break; | |
2346 | ||
2347 | default: | |
2348 | ||
fecd2382 | 2349 | #ifdef ONLY_STANDARD_ESCAPES |
6efd877d KR |
2350 | as_bad ("Bad escaped character in string, '?' assumed"); |
2351 | c = '?'; | |
fecd2382 | 2352 | #endif /* ONLY_STANDARD_ESCAPES */ |
6efd877d KR |
2353 | |
2354 | break; | |
2355 | } /* switch on escaped char */ | |
2356 | break; | |
2357 | ||
2358 | default: | |
2359 | break; | |
2360 | } /* switch on char */ | |
2361 | return (c); | |
2362 | } /* next_char_of_string() */ | |
fecd2382 RP |
2363 | \f |
2364 | static segT | |
f8701a3f | 2365 | get_segmented_expression (expP) |
6efd877d | 2366 | register expressionS *expP; |
fecd2382 | 2367 | { |
6efd877d | 2368 | register segT retval; |
f8701a3f | 2369 | |
6efd877d | 2370 | if ((retval = expression (expP)) == SEG_PASS1 || retval == SEG_ABSENT || retval == SEG_BIG) |
f8701a3f | 2371 | { |
6efd877d | 2372 | as_bad ("Expected address expression: absolute 0 assumed"); |
f8701a3f | 2373 | retval = expP->X_seg = SEG_ABSOLUTE; |
6efd877d KR |
2374 | expP->X_add_number = 0; |
2375 | expP->X_add_symbol = expP->X_subtract_symbol = 0; | |
f8701a3f SC |
2376 | } |
2377 | return (retval); /* SEG_ ABSOLUTE,UNKNOWN,DATA,TEXT,BSS */ | |
fecd2382 RP |
2378 | } |
2379 | ||
6efd877d KR |
2380 | static segT |
2381 | get_known_segmented_expression (expP) | |
2382 | register expressionS *expP; | |
fecd2382 | 2383 | { |
6efd877d KR |
2384 | register segT retval; |
2385 | register char *name1; | |
2386 | register char *name2; | |
f8701a3f SC |
2387 | |
2388 | if ((retval = get_segmented_expression (expP)) == SEG_UNKNOWN) | |
2389 | { | |
6efd877d | 2390 | name1 = expP->X_add_symbol ? S_GET_NAME (expP->X_add_symbol) : ""; |
f8701a3f | 2391 | name2 = expP->X_subtract_symbol ? |
6efd877d KR |
2392 | S_GET_NAME (expP->X_subtract_symbol) : |
2393 | ""; | |
f8701a3f SC |
2394 | if (name1 && name2) |
2395 | { | |
6efd877d KR |
2396 | as_warn ("Symbols \"%s\" \"%s\" are undefined: absolute 0 assumed.", |
2397 | name1, name2); | |
f8701a3f SC |
2398 | } |
2399 | else | |
2400 | { | |
6efd877d KR |
2401 | as_warn ("Symbol \"%s\" undefined: absolute 0 assumed.", |
2402 | name1 ? name1 : name2); | |
f8701a3f SC |
2403 | } |
2404 | retval = expP->X_seg = SEG_ABSOLUTE; | |
6efd877d KR |
2405 | expP->X_add_number = 0; |
2406 | expP->X_add_symbol = expP->X_subtract_symbol = NULL; | |
f8701a3f | 2407 | } |
a39116f1 | 2408 | #ifndef MANY_SEGMENTS |
6efd877d | 2409 | know (retval == SEG_ABSOLUTE || retval == SEG_DATA || retval == SEG_TEXT || retval == SEG_BSS || retval == SEG_DIFFERENCE); |
a39116f1 | 2410 | #endif |
f8701a3f SC |
2411 | return (retval); |
2412 | ||
fecd2382 RP |
2413 | } /* get_known_segmented_expression() */ |
2414 | ||
2415 | ||
2416 | ||
6efd877d | 2417 | /* static */ long /* JF was static, but can't be if the MD pseudos are to use it */ |
f8701a3f | 2418 | get_absolute_expression () |
fecd2382 | 2419 | { |
6efd877d | 2420 | expressionS exp; |
f8701a3f SC |
2421 | register segT s; |
2422 | ||
6efd877d | 2423 | if ((s = expression (&exp)) != SEG_ABSOLUTE) |
f8701a3f SC |
2424 | { |
2425 | if (s != SEG_ABSENT) | |
2426 | { | |
6efd877d | 2427 | as_bad ("Bad Absolute Expression, absolute 0 assumed."); |
f8701a3f | 2428 | } |
6efd877d | 2429 | exp.X_add_number = 0; |
f8701a3f | 2430 | } |
6efd877d | 2431 | return (exp.X_add_number); |
fecd2382 RP |
2432 | } |
2433 | ||
6efd877d KR |
2434 | char /* return terminator */ |
2435 | get_absolute_expression_and_terminator (val_pointer) | |
2436 | long *val_pointer; /* return value of expression */ | |
fecd2382 | 2437 | { |
6efd877d KR |
2438 | *val_pointer = get_absolute_expression (); |
2439 | return (*input_line_pointer++); | |
fecd2382 RP |
2440 | } |
2441 | \f | |
2442 | /* | |
2443 | * demand_copy_C_string() | |
2444 | * | |
2445 | * Like demand_copy_string, but return NULL if the string contains any '\0's. | |
2446 | * Give a warning if that happens. | |
2447 | */ | |
2448 | char * | |
f8701a3f | 2449 | demand_copy_C_string (len_pointer) |
6efd877d | 2450 | int *len_pointer; |
fecd2382 | 2451 | { |
6efd877d | 2452 | register char *s; |
f8701a3f | 2453 | |
6efd877d | 2454 | if ((s = demand_copy_string (len_pointer)) != 0) |
f8701a3f SC |
2455 | { |
2456 | register int len; | |
2457 | ||
6efd877d | 2458 | for (len = *len_pointer; |
f8701a3f SC |
2459 | len > 0; |
2460 | len--) | |
2461 | { | |
6efd877d | 2462 | if (*s == 0) |
fecd2382 | 2463 | { |
f8701a3f SC |
2464 | s = 0; |
2465 | len = 1; | |
6efd877d KR |
2466 | *len_pointer = 0; |
2467 | as_bad ("This string may not contain \'\\0\'"); | |
fecd2382 | 2468 | } |
f8701a3f SC |
2469 | } |
2470 | } | |
2471 | return (s); | |
fecd2382 RP |
2472 | } |
2473 | \f | |
2474 | /* | |
2475 | * demand_copy_string() | |
2476 | * | |
2477 | * Demand string, but return a safe (=private) copy of the string. | |
2478 | * Return NULL if we can't read a string here. | |
2479 | */ | |
6efd877d KR |
2480 | static char * |
2481 | demand_copy_string (lenP) | |
2482 | int *lenP; | |
fecd2382 | 2483 | { |
6efd877d KR |
2484 | register unsigned int c; |
2485 | register int len; | |
2486 | char *retval; | |
2487 | ||
2488 | len = 0; | |
2489 | SKIP_WHITESPACE (); | |
2490 | if (*input_line_pointer == '\"') | |
2491 | { | |
2492 | input_line_pointer++; /* Skip opening quote. */ | |
2493 | ||
2494 | while (is_a_char (c = next_char_of_string ())) | |
2495 | { | |
2496 | obstack_1grow (¬es, c); | |
2497 | len++; | |
fecd2382 | 2498 | } |
6efd877d KR |
2499 | /* JF this next line is so demand_copy_C_string will return a null |
2500 | termanated string. */ | |
2501 | obstack_1grow (¬es, '\0'); | |
2502 | retval = obstack_finish (¬es); | |
2503 | } | |
2504 | else | |
2505 | { | |
2506 | as_warn ("Missing string"); | |
2507 | retval = NULL; | |
2508 | ignore_rest_of_line (); | |
2509 | } | |
2510 | *lenP = len; | |
2511 | return (retval); | |
2512 | } /* demand_copy_string() */ | |
fecd2382 RP |
2513 | \f |
2514 | /* | |
2515 | * is_it_end_of_statement() | |
2516 | * | |
2517 | * In: Input_line_pointer->next character. | |
2518 | * | |
2519 | * Do: Skip input_line_pointer over all whitespace. | |
2520 | * | |
2521 | * Out: 1 if input_line_pointer->end-of-line. | |
f8701a3f | 2522 | */ |
6efd877d KR |
2523 | int |
2524 | is_it_end_of_statement () | |
2525 | { | |
2526 | SKIP_WHITESPACE (); | |
2527 | return (is_end_of_line[*input_line_pointer]); | |
2528 | } /* is_it_end_of_statement() */ | |
fecd2382 | 2529 | |
6efd877d KR |
2530 | void |
2531 | equals (sym_name) | |
2532 | char *sym_name; | |
fecd2382 | 2533 | { |
6efd877d | 2534 | register symbolS *symbolP; /* symbol we are working with */ |
f8701a3f SC |
2535 | |
2536 | input_line_pointer++; | |
6efd877d | 2537 | if (*input_line_pointer == '=') |
f8701a3f SC |
2538 | input_line_pointer++; |
2539 | ||
6efd877d | 2540 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') |
f8701a3f SC |
2541 | input_line_pointer++; |
2542 | ||
6efd877d KR |
2543 | if (sym_name[0] == '.' && sym_name[1] == '\0') |
2544 | { | |
2545 | /* Turn '. = mumble' into a .org mumble */ | |
2546 | register segT segment; | |
2547 | expressionS exp; | |
2548 | register char *p; | |
f8701a3f | 2549 | |
6efd877d KR |
2550 | segment = get_known_segmented_expression (&exp); |
2551 | if (!need_pass_2) | |
2552 | { | |
2553 | if (segment != now_seg && segment != SEG_ABSOLUTE) | |
2554 | as_warn ("Illegal segment \"%s\". Segment \"%s\" assumed.", | |
2555 | segment_name (segment), | |
2556 | segment_name (now_seg)); | |
2557 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp.X_add_symbol, | |
2558 | exp.X_add_number, (char *) 0); | |
2559 | *p = 0; | |
2560 | } /* if (ok to make frag) */ | |
2561 | } | |
2562 | else | |
2563 | { | |
2564 | symbolP = symbol_find_or_make (sym_name); | |
2565 | pseudo_set (symbolP); | |
2566 | } | |
2567 | } /* equals() */ | |
fecd2382 RP |
2568 | |
2569 | /* .include -- include a file at this point. */ | |
2570 | ||
2571 | /* ARGSUSED */ | |
6efd877d KR |
2572 | void |
2573 | s_include (arg) | |
2574 | int arg; | |
fecd2382 | 2575 | { |
f8701a3f SC |
2576 | char *newbuf; |
2577 | char *filename; | |
2578 | int i; | |
2579 | FILE *try; | |
2580 | char *path; | |
2581 | ||
6efd877d KR |
2582 | filename = demand_copy_string (&i); |
2583 | demand_empty_rest_of_line (); | |
2584 | path = xmalloc (i + include_dir_maxlen + 5 /* slop */ ); | |
2585 | for (i = 0; i < include_dir_count; i++) | |
2586 | { | |
2587 | strcpy (path, include_dirs[i]); | |
2588 | strcat (path, "/"); | |
2589 | strcat (path, filename); | |
2590 | if (0 != (try = fopen (path, "r"))) | |
2591 | { | |
2592 | fclose (try); | |
2593 | goto gotit; | |
2594 | } | |
2595 | } | |
2596 | free (path); | |
f8701a3f SC |
2597 | path = filename; |
2598 | gotit: | |
2599 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ | |
2600 | newbuf = input_scrub_include_file (path, input_line_pointer); | |
2601 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6efd877d | 2602 | } /* s_include() */ |
fecd2382 | 2603 | |
6efd877d KR |
2604 | void |
2605 | add_include_dir (path) | |
2606 | char *path; | |
fecd2382 | 2607 | { |
f8701a3f SC |
2608 | int i; |
2609 | ||
2610 | if (include_dir_count == 0) | |
2611 | { | |
6efd877d | 2612 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); |
f8701a3f SC |
2613 | include_dirs[0] = "."; /* Current dir */ |
2614 | include_dir_count = 2; | |
2615 | } | |
2616 | else | |
2617 | { | |
2618 | include_dir_count++; | |
6efd877d KR |
2619 | include_dirs = (char **) realloc (include_dirs, |
2620 | include_dir_count * sizeof (*include_dirs)); | |
f8701a3f SC |
2621 | } |
2622 | ||
6efd877d | 2623 | include_dirs[include_dir_count - 1] = path; /* New one */ |
f8701a3f | 2624 | |
6efd877d KR |
2625 | i = strlen (path); |
2626 | if (i > include_dir_maxlen) | |
2627 | include_dir_maxlen = i; | |
2628 | } /* add_include_dir() */ | |
fecd2382 | 2629 | |
6efd877d KR |
2630 | void |
2631 | s_ignore (arg) | |
2632 | int arg; | |
fecd2382 | 2633 | { |
6efd877d | 2634 | extern char is_end_of_line[]; |
f8701a3f | 2635 | |
6efd877d KR |
2636 | while (!is_end_of_line[*input_line_pointer]) |
2637 | { | |
2638 | ++input_line_pointer; | |
2639 | } | |
2640 | ++input_line_pointer; | |
fecd2382 | 2641 | |
6efd877d KR |
2642 | return; |
2643 | } /* s_ignore() */ | |
fecd2382 RP |
2644 | |
2645 | /* end of read.c */ |