Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* read.c - read a source file - |
ddb393cf ILT |
2 | Copyright (C) 1986, 1987, 1990, 1991, 1993, 1994 |
3 | Free Software Foundation, Inc. | |
3340f7e5 | 4 | |
f8701a3f SC |
5 | This file is part of GAS, the GNU Assembler. |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to | |
a2a5a4fa | 19 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
fecd2382 | 20 | |
016e0d42 | 21 | #if 0 |
fecd2382 RP |
22 | #define MASK_CHAR (0xFF) /* If your chars aren't 8 bits, you will |
23 | change this a bit. But then, GNU isn't | |
24 | spozed to run on your machine anyway. | |
25 | (RMS is so shortsighted sometimes.) | |
26 | */ | |
016e0d42 ILT |
27 | #else |
28 | #define MASK_CHAR ((int)(unsigned char)-1) | |
29 | #endif | |
fecd2382 | 30 | |
9a7d824a | 31 | |
9471a360 KR |
32 | /* This is the largest known floating point format (for now). It will |
33 | grow when we do 4361 style flonums. */ | |
fecd2382 | 34 | |
9471a360 | 35 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
fecd2382 | 36 | |
016e0d42 ILT |
37 | /* Routines that read assembler source text to build spagetti in memory. |
38 | Another group of these functions is in the expr.c module. */ | |
fecd2382 | 39 | |
9471a360 | 40 | /* for isdigit() */ |
6efd877d KR |
41 | #include <ctype.h> |
42 | ||
fecd2382 | 43 | #include "as.h" |
9471a360 | 44 | #include "subsegs.h" |
1356d77d | 45 | #include "libiberty.h" |
fecd2382 | 46 | #include "obstack.h" |
9a7d824a ILT |
47 | #include "listing.h" |
48 | ||
9a7d824a ILT |
49 | #ifndef TC_START_LABEL |
50 | #define TC_START_LABEL(x,y) (x==':') | |
51 | #endif | |
fecd2382 | 52 | |
016e0d42 ILT |
53 | /* The NOP_OPCODE is for the alignment fill value. |
54 | * fill it a nop instruction so that the disassembler does not choke | |
55 | * on it | |
56 | */ | |
57 | #ifndef NOP_OPCODE | |
58 | #define NOP_OPCODE 0x00 | |
59 | #endif | |
60 | ||
61 | char *input_line_pointer; /*->next char of source file to parse. */ | |
fecd2382 | 62 | |
326d16ca | 63 | int generate_asm_lineno = 0; /* flag to generate line stab for .s file */ |
daad3bbf | 64 | |
fecd2382 | 65 | #if BITS_PER_CHAR != 8 |
6efd877d KR |
66 | /* The following table is indexed by[(char)] and will break if |
67 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
68 | die horribly; | |
fecd2382 | 69 | #endif |
f8701a3f | 70 | |
c978e704 ILT |
71 | #ifndef LEX_AT |
72 | /* The m88k unfortunately uses @ as a label beginner. */ | |
73 | #define LEX_AT 0 | |
74 | #endif | |
75 | ||
ddb393cf ILT |
76 | #ifndef LEX_BR |
77 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
78 | #define LEX_BR 0 | |
79 | #endif | |
80 | ||
6ef37255 KR |
81 | #ifndef LEX_PCT |
82 | /* The Delta 68k assembler permits % inside label names. */ | |
83 | #define LEX_PCT 0 | |
84 | #endif | |
85 | ||
016e0d42 | 86 | /* used by is_... macros. our ctype[] */ |
1356d77d | 87 | char lex_type[256] = |
016e0d42 ILT |
88 | { |
89 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ | |
90 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
6ef37255 | 91 | 0, 0, 0, 0, 3, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
016e0d42 | 92 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
c978e704 | 93 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ |
ddb393cf | 94 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ |
016e0d42 | 95 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ |
ddb393cf | 96 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 0, /* pqrstuvwxyz{|}~. */ |
016e0d42 ILT |
97 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
98 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
99 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
100 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
101 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
102 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
103 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
104 | }; | |
105 | ||
106 | ||
107 | /* | |
fecd2382 RP |
108 | * In: a character. |
109 | * Out: 1 if this character ends a line. | |
110 | */ | |
111 | #define _ (0) | |
016e0d42 ILT |
112 | char is_end_of_line[256] = |
113 | { | |
fecd2382 | 114 | #ifdef CR_EOL |
016e0d42 | 115 | _, _, _, _, _, _, _, _, _, _, 99, _, _, 99, _, _, /* @abcdefghijklmno */ |
fecd2382 | 116 | #else |
016e0d42 | 117 | _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, _, /* @abcdefghijklmno */ |
fecd2382 | 118 | #endif |
016e0d42 | 119 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
40324362 KR |
120 | #ifdef TC_HPPA |
121 | _,99, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* _!"#$%&'()*+,-./ */ | |
122 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* 0123456789:;<=>? */ | |
123 | #else | |
016e0d42 ILT |
124 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
125 | _, _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, /* 0123456789:;<=>? */ | |
40324362 | 126 | #endif |
016e0d42 ILT |
127 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
128 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
129 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
130 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
131 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
132 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
133 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
134 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
135 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
136 | }; | |
fecd2382 RP |
137 | #undef _ |
138 | ||
016e0d42 ILT |
139 | /* Functions private to this file. */ |
140 | ||
141 | static char *buffer; /* 1st char of each buffer of lines is here. */ | |
142 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
fecd2382 | 143 | |
2209b19c KR |
144 | #ifdef TARGET_BYTES_BIG_ENDIAN |
145 | /* Hack to deal with tc-*.h defining TARGET_BYTES_BIG_ENDIAN to empty | |
146 | instead of to 0 or 1. */ | |
147 | #if 5 - TARGET_BYTES_BIG_ENDIAN - 5 == 10 | |
148 | #undef TARGET_BYTES_BIG_ENDIAN | |
149 | #define TARGET_BYTES_BIG_ENDIAN 1 | |
150 | #endif | |
151 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; | |
152 | #else | |
153 | int target_big_endian /* = 0 */; | |
154 | #endif | |
9c6d3f66 | 155 | |
9471a360 | 156 | static char *old_buffer; /* JF a hack */ |
016e0d42 ILT |
157 | static char *old_input; |
158 | static char *old_limit; | |
fecd2382 | 159 | |
016e0d42 | 160 | /* Variables for handling include file directory list. */ |
fecd2382 | 161 | |
016e0d42 ILT |
162 | char **include_dirs; /* List of pointers to directories to |
163 | search for .include's */ | |
164 | int include_dir_count; /* How many are in the list */ | |
165 | int include_dir_maxlen = 1;/* Length of longest in list */ | |
fecd2382 RP |
166 | |
167 | #ifndef WORKING_DOT_WORD | |
016e0d42 | 168 | struct broken_word *broken_words; |
9471a360 | 169 | int new_broken_words; |
fecd2382 RP |
170 | #endif |
171 | ||
e28c40d7 ILT |
172 | /* The current offset into the absolute section. We don't try to |
173 | build frags in the absolute section, since no data can be stored | |
174 | there. We just keep track of the current offset. */ | |
175 | addressT abs_section_offset; | |
176 | ||
1356d77d ILT |
177 | /* If this line had an MRI style label, it is stored in this variable. |
178 | This is used by some of the MRI pseudo-ops. */ | |
69e077f3 | 179 | symbolS *mri_line_label; |
1356d77d ILT |
180 | |
181 | /* This global variable is used to support MRI common sections. We | |
182 | translate such sections into a common symbol. This variable is | |
183 | non-NULL when we are in an MRI common section. */ | |
184 | symbolS *mri_common_symbol; | |
185 | ||
286cb27a ILT |
186 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we |
187 | need to align to an even byte boundary unless the next pseudo-op is | |
188 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
189 | may be needed. */ | |
190 | static int mri_pending_align; | |
191 | ||
192 | static void do_align PARAMS ((int, char *)); | |
e28c40d7 ILT |
193 | static int hex_float PARAMS ((int, char *)); |
194 | static void do_org PARAMS ((segT, expressionS *, int)); | |
6ef37255 | 195 | char *demand_copy_string PARAMS ((int *lenP)); |
016e0d42 | 196 | int is_it_end_of_statement PARAMS ((void)); |
5ac34ac3 | 197 | static segT get_segmented_expression PARAMS ((expressionS *expP)); |
016e0d42 | 198 | static segT get_known_segmented_expression PARAMS ((expressionS * expP)); |
016e0d42 | 199 | static void pobegin PARAMS ((void)); |
fecd2382 | 200 | \f |
6efd877d | 201 | |
016e0d42 ILT |
202 | void |
203 | read_begin () | |
fecd2382 | 204 | { |
016e0d42 | 205 | const char *p; |
f8701a3f | 206 | |
6efd877d KR |
207 | pobegin (); |
208 | obj_read_begin_hook (); | |
f8701a3f | 209 | |
4380166d KR |
210 | /* Something close -- but not too close -- to a multiple of 1024. |
211 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
212 | obstack_begin (¬es, 5090); | |
213 | obstack_begin (&cond_obstack, 990); | |
f8701a3f | 214 | |
f8701a3f SC |
215 | /* Use machine dependent syntax */ |
216 | for (p = line_separator_chars; *p; p++) | |
58d4951d | 217 | is_end_of_line[(unsigned char) *p] = 1; |
f8701a3f | 218 | /* Use more. FIXME-SOMEDAY. */ |
1356d77d ILT |
219 | |
220 | if (flag_mri) | |
221 | lex_type['?'] = 3; | |
fecd2382 RP |
222 | } |
223 | \f | |
224 | /* set up pseudo-op tables */ | |
225 | ||
1356d77d | 226 | static struct hash_control *po_hash; |
fecd2382 | 227 | |
016e0d42 | 228 | static const pseudo_typeS potable[] = |
fecd2382 | 229 | { |
6efd877d KR |
230 | {"abort", s_abort, 0}, |
231 | {"align", s_align_ptwo, 0}, | |
232 | {"ascii", stringer, 0}, | |
233 | {"asciz", stringer, 1}, | |
931a8fab | 234 | {"balign", s_align_bytes, 0}, |
f8701a3f | 235 | /* block */ |
6efd877d KR |
236 | {"byte", cons, 1}, |
237 | {"comm", s_comm, 0}, | |
1356d77d ILT |
238 | {"common", s_mri_common, 0}, |
239 | {"common.s", s_mri_common, 1}, | |
6efd877d | 240 | {"data", s_data, 0}, |
1356d77d ILT |
241 | {"dc", cons, 2}, |
242 | {"dc.b", cons, 1}, | |
243 | {"dc.d", float_cons, 'd'}, | |
244 | {"dc.l", cons, 4}, | |
245 | {"dc.s", float_cons, 'f'}, | |
246 | {"dc.w", cons, 2}, | |
247 | {"dc.x", float_cons, 'x'}, | |
e28c40d7 ILT |
248 | {"dcb", s_space, 2}, |
249 | {"dcb.b", s_space, 1}, | |
250 | {"dcb.d", s_float_space, 'd'}, | |
251 | {"dcb.l", s_space, 4}, | |
252 | {"dcb.s", s_float_space, 'f'}, | |
253 | {"dcb.w", s_space, 2}, | |
254 | {"dcb.x", s_float_space, 'x'}, | |
1356d77d ILT |
255 | {"ds", s_space, 2}, |
256 | {"ds.b", s_space, 1}, | |
e28c40d7 | 257 | {"ds.d", s_space, 8}, |
1356d77d | 258 | {"ds.l", s_space, 4}, |
e28c40d7 ILT |
259 | {"ds.p", s_space, 12}, |
260 | {"ds.s", s_space, 4}, | |
1356d77d | 261 | {"ds.w", s_space, 2}, |
e28c40d7 | 262 | {"ds.x", s_space, 12}, |
604633ae | 263 | #ifdef S_SET_DESC |
4064305e | 264 | {"desc", s_desc, 0}, |
604633ae | 265 | #endif |
f8701a3f | 266 | /* dim */ |
6efd877d | 267 | {"double", float_cons, 'd'}, |
f8701a3f | 268 | /* dsect */ |
6efd877d KR |
269 | {"eject", listing_eject, 0}, /* Formfeed listing */ |
270 | {"else", s_else, 0}, | |
e28c40d7 | 271 | {"elsec", s_else, 0}, |
6efd877d | 272 | {"end", s_end, 0}, |
e28c40d7 | 273 | {"endc", s_endif, 0}, |
6efd877d | 274 | {"endif", s_endif, 0}, |
f8701a3f | 275 | /* endef */ |
6efd877d | 276 | {"equ", s_set, 0}, |
f8701a3f SC |
277 | /* err */ |
278 | /* extend */ | |
6efd877d | 279 | {"extern", s_ignore, 0}, /* We treat all undef as ext */ |
9a7d824a ILT |
280 | {"appfile", s_app_file, 1}, |
281 | {"appline", s_app_line, 0}, | |
e28c40d7 | 282 | {"fail", s_fail, 0}, |
6efd877d KR |
283 | {"file", s_app_file, 0}, |
284 | {"fill", s_fill, 0}, | |
285 | {"float", float_cons, 'f'}, | |
e28c40d7 | 286 | {"format", s_ignore, 0}, |
6efd877d KR |
287 | {"global", s_globl, 0}, |
288 | {"globl", s_globl, 0}, | |
289 | {"hword", cons, 2}, | |
e28c40d7 | 290 | {"if", s_if, (int) O_ne}, |
6efd877d | 291 | {"ifdef", s_ifdef, 0}, |
e28c40d7 | 292 | {"ifeq", s_if, (int) O_eq}, |
6efd877d | 293 | {"ifeqs", s_ifeqs, 0}, |
e28c40d7 ILT |
294 | {"ifge", s_if, (int) O_ge}, |
295 | {"ifgt", s_if, (int) O_gt}, | |
296 | {"ifle", s_if, (int) O_le}, | |
297 | {"iflt", s_if, (int) O_lt}, | |
6efd877d | 298 | {"ifndef", s_ifdef, 1}, |
e28c40d7 | 299 | {"ifne", s_if, (int) O_ne}, |
6efd877d KR |
300 | {"ifnes", s_ifeqs, 1}, |
301 | {"ifnotdef", s_ifdef, 1}, | |
302 | {"include", s_include, 0}, | |
303 | {"int", cons, 4}, | |
304 | {"lcomm", s_lcomm, 0}, | |
305 | {"lflags", listing_flags, 0}, /* Listing flags */ | |
306 | {"list", listing_list, 1}, /* Turn listing on */ | |
e28c40d7 | 307 | {"llen", listing_psize, 1}, |
6efd877d KR |
308 | {"long", cons, 4}, |
309 | {"lsym", s_lsym, 0}, | |
e28c40d7 | 310 | {"noformat", s_ignore, 0}, |
6efd877d | 311 | {"nolist", listing_list, 0}, /* Turn listing off */ |
69e077f3 | 312 | {"nopage", listing_nopage, 0}, |
80aab579 | 313 | {"octa", cons, 16}, |
e28c40d7 | 314 | {"offset", s_struct, 0}, |
6efd877d | 315 | {"org", s_org, 0}, |
931a8fab | 316 | {"p2align", s_align_ptwo, 0}, |
69e077f3 ILT |
317 | {"page", listing_eject, 0}, |
318 | {"plen", listing_psize, 0}, | |
6efd877d | 319 | {"psize", listing_psize, 0}, /* set paper size */ |
f8701a3f | 320 | /* print */ |
80aab579 | 321 | {"quad", cons, 8}, |
6efd877d | 322 | {"sbttl", listing_title, 1}, /* Subtitle of listing */ |
f8701a3f SC |
323 | /* scl */ |
324 | /* sect */ | |
6efd877d KR |
325 | {"set", s_set, 0}, |
326 | {"short", cons, 2}, | |
327 | {"single", float_cons, 'f'}, | |
f8701a3f | 328 | /* size */ |
6efd877d | 329 | {"space", s_space, 0}, |
4064305e SS |
330 | {"stabd", s_stab, 'd'}, |
331 | {"stabn", s_stab, 'n'}, | |
332 | {"stabs", s_stab, 's'}, | |
ba71c54d | 333 | {"string", stringer, 1}, |
e28c40d7 | 334 | {"struct", s_struct, 0}, |
f8701a3f | 335 | /* tag */ |
6efd877d | 336 | {"text", s_text, 0}, |
6ef37255 KR |
337 | |
338 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
339 | won't be able to use it for a while -- probably a year or more. | |
340 | But once this has been released, check with gcc maintainers | |
341 | before deleting it or even changing the spelling. */ | |
342 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
343 | /* If we're folding case -- done for some targets, not necessarily | |
344 | all -- the above string in an input file will be converted to | |
345 | this one. Match it either way... */ | |
346 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
347 | ||
6efd877d | 348 | {"title", listing_title, 0}, /* Listing title */ |
f8701a3f SC |
349 | /* type */ |
350 | /* use */ | |
351 | /* val */ | |
1356d77d | 352 | {"xdef", s_globl, 0}, |
4064305e | 353 | {"xstabs", s_xstab, 's'}, |
6efd877d | 354 | {"word", cons, 2}, |
c02fd8dc | 355 | {"zero", s_space, 0}, |
6efd877d | 356 | {NULL} /* end sentinel */ |
fecd2382 RP |
357 | }; |
358 | ||
2209b19c KR |
359 | static int pop_override_ok = 0; |
360 | static const char *pop_table_name; | |
361 | ||
362 | void | |
363 | pop_insert (table) | |
364 | const pseudo_typeS *table; | |
6efd877d | 365 | { |
2209b19c | 366 | const char *errtxt; |
6efd877d | 367 | const pseudo_typeS *pop; |
2209b19c KR |
368 | for (pop = table; pop->poc_name; pop++) |
369 | { | |
370 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
371 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
372 | as_fatal ("error constructing %s pseudo-op table", pop_table_name); | |
373 | } | |
374 | } | |
6efd877d | 375 | |
2209b19c KR |
376 | #ifndef md_pop_insert |
377 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
378 | #endif | |
379 | ||
380 | #ifndef obj_pop_insert | |
381 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
382 | #endif | |
383 | ||
384 | static void | |
385 | pobegin () | |
386 | { | |
6efd877d KR |
387 | po_hash = hash_new (); |
388 | ||
389 | /* Do the target-specific pseudo ops. */ | |
2209b19c KR |
390 | pop_table_name = "md"; |
391 | md_pop_insert (); | |
6efd877d KR |
392 | |
393 | /* Now object specific. Skip any that were in the target table. */ | |
2209b19c KR |
394 | pop_table_name = "obj"; |
395 | pop_override_ok = 1; | |
396 | obj_pop_insert (); | |
6efd877d KR |
397 | |
398 | /* Now portable ones. Skip any that we've seen already. */ | |
2209b19c KR |
399 | pop_table_name = "standard"; |
400 | pop_insert (potable); | |
401 | } | |
fecd2382 | 402 | \f |
58d4951d ILT |
403 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ |
404 | if (ignore_input ()) \ | |
405 | { \ | |
406 | while (! is_end_of_line[(unsigned char) *input_line_pointer++]) \ | |
407 | if (input_line_pointer == buffer_limit) \ | |
408 | break; \ | |
409 | continue; \ | |
f8701a3f | 410 | } |
a39116f1 | 411 | |
fecd2382 RP |
412 | |
413 | /* read_a_source_file() | |
414 | * | |
415 | * We read the file, putting things into a web that | |
416 | * represents what we have been reading. | |
417 | */ | |
6efd877d KR |
418 | void |
419 | read_a_source_file (name) | |
420 | char *name; | |
fecd2382 | 421 | { |
f8701a3f | 422 | register char c; |
6efd877d | 423 | register char *s; /* string of symbol, '\0' appended */ |
f8701a3f | 424 | register int temp; |
6efd877d | 425 | pseudo_typeS *pop; |
f8701a3f | 426 | |
6efd877d | 427 | buffer = input_scrub_new_file (name); |
f8701a3f | 428 | |
6efd877d KR |
429 | listing_file (name); |
430 | listing_newline (""); | |
f8701a3f | 431 | |
6efd877d KR |
432 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) |
433 | { /* We have another line to parse. */ | |
434 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
9471a360 KR |
435 | contin: /* JF this goto is my fault I admit it. |
436 | Someone brave please re-write the whole | |
437 | input section here? Pleeze??? */ | |
6efd877d | 438 | while (input_line_pointer < buffer_limit) |
9471a360 KR |
439 | { |
440 | /* We have more of this buffer to parse. */ | |
f8701a3f SC |
441 | |
442 | /* | |
443 | * We now have input_line_pointer->1st char of next line. | |
444 | * If input_line_pointer [-1] == '\n' then we just | |
445 | * scanned another line: so bump line counters. | |
446 | */ | |
d2550c72 | 447 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
6efd877d | 448 | { |
a2a5a4fa KR |
449 | #ifdef md_start_line_hook |
450 | md_start_line_hook (); | |
451 | #endif | |
452 | ||
385ce433 JL |
453 | if (input_line_pointer[-1] == '\n') |
454 | bump_line_counters (); | |
f8701a3f | 455 | |
1356d77d ILT |
456 | if (flag_mri |
457 | #ifdef LABELS_WITHOUT_COLONS | |
458 | || 1 | |
459 | #endif | |
460 | ) | |
6efd877d | 461 | { |
1356d77d ILT |
462 | mri_line_label = NULL; |
463 | ||
464 | /* Text at the start of a line must be a label, we | |
465 | run down and stick a colon in. */ | |
466 | if (is_name_beginner (*input_line_pointer)) | |
467 | { | |
468 | char *line_start = input_line_pointer; | |
469 | char c = get_symbol_end (); | |
470 | ||
e28c40d7 | 471 | if (! ignore_input ()) |
1356d77d | 472 | { |
e28c40d7 ILT |
473 | /* In MRI mode, the EQU pseudoop must be |
474 | handled specially. */ | |
475 | if (flag_mri) | |
1356d77d | 476 | { |
e28c40d7 ILT |
477 | if (((strncasecmp (input_line_pointer + 1, |
478 | "EQU", 3) == 0) | |
479 | || (strncasecmp (input_line_pointer + 1, | |
480 | "SET", 3) == 0)) | |
481 | && (input_line_pointer[4] == ' ' | |
482 | || input_line_pointer[4] == '\t')) | |
483 | { | |
484 | input_line_pointer += 4; | |
485 | equals (line_start); | |
486 | continue; | |
487 | } | |
1356d77d | 488 | } |
e28c40d7 ILT |
489 | |
490 | mri_line_label = colon (line_start); | |
1356d77d | 491 | } |
6efd877d | 492 | |
1356d77d ILT |
493 | *input_line_pointer = c; |
494 | if (c == ':') | |
495 | input_line_pointer++; | |
496 | } | |
6efd877d | 497 | } |
9471a360 | 498 | } |
f8701a3f | 499 | |
f8701a3f SC |
500 | /* |
501 | * We are at the begining of a line, or similar place. | |
502 | * We expect a well-formed assembler statement. | |
503 | * A "symbol-name:" is a statement. | |
504 | * | |
505 | * Depending on what compiler is used, the order of these tests | |
506 | * may vary to catch most common case 1st. | |
507 | * Each test is independent of all other tests at the (top) level. | |
508 | * PLEASE make a compiler that doesn't use this assembler. | |
509 | * It is crufty to waste a compiler's time encoding things for this | |
510 | * assembler, which then wastes more time decoding it. | |
511 | * (And communicating via (linear) files is silly! | |
512 | * If you must pass stuff, please pass a tree!) | |
513 | */ | |
9471a360 KR |
514 | if ((c = *input_line_pointer++) == '\t' |
515 | || c == ' ' | |
516 | || c == '\f' | |
517 | || c == 0) | |
6efd877d KR |
518 | { |
519 | c = *input_line_pointer++; | |
520 | } | |
521 | know (c != ' '); /* No further leading whitespace. */ | |
522 | LISTING_NEWLINE (); | |
f8701a3f SC |
523 | /* |
524 | * C is the 1st significant character. | |
525 | * Input_line_pointer points after that character. | |
526 | */ | |
6efd877d | 527 | if (is_name_beginner (c)) |
6ef37255 KR |
528 | { |
529 | /* want user-defined label or pseudo/opcode */ | |
6efd877d KR |
530 | HANDLE_CONDITIONAL_ASSEMBLY (); |
531 | ||
f8701a3f | 532 | s = --input_line_pointer; |
6efd877d | 533 | c = get_symbol_end (); /* name's delimiter */ |
f8701a3f SC |
534 | /* |
535 | * C is character after symbol. | |
536 | * That character's place in the input line is now '\0'. | |
537 | * S points to the beginning of the symbol. | |
538 | * [In case of pseudo-op, s->'.'.] | |
539 | * Input_line_pointer->'\0' where c was. | |
540 | */ | |
9a7d824a | 541 | if (TC_START_LABEL(c, input_line_pointer)) |
6efd877d KR |
542 | { |
543 | colon (s); /* user-defined label */ | |
544 | *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */ | |
f8701a3f | 545 | /* Input_line_pointer->after ':'. */ |
6efd877d KR |
546 | SKIP_WHITESPACE (); |
547 | ||
f8701a3f | 548 | |
6efd877d | 549 | } |
4064305e SS |
550 | else if (c == '=' |
551 | || (input_line_pointer[1] == '=' | |
552 | #ifdef TC_EQUAL_IN_INSN | |
553 | && ! TC_EQUAL_IN_INSN (c, input_line_pointer) | |
554 | #endif | |
555 | )) | |
9c6d3f66 | 556 | { |
6efd877d KR |
557 | equals (s); |
558 | demand_empty_rest_of_line (); | |
559 | } | |
560 | else | |
561 | { /* expect pseudo-op or machine instruction */ | |
8ff6f40e ILT |
562 | pop = NULL; |
563 | ||
d4c8cbd8 JL |
564 | #define IGNORE_OPCODE_CASE |
565 | #ifdef IGNORE_OPCODE_CASE | |
566 | { | |
567 | char *s2 = s; | |
568 | while (*s2) | |
569 | { | |
570 | if (isupper (*s2)) | |
571 | *s2 = tolower (*s2); | |
572 | s2++; | |
573 | } | |
574 | } | |
575 | #endif | |
576 | ||
1356d77d | 577 | if (flag_mri |
8ff6f40e | 578 | #ifdef NO_PSEUDO_DOT |
1356d77d | 579 | || 1 |
8ff6f40e | 580 | #endif |
1356d77d ILT |
581 | ) |
582 | { | |
583 | /* The MRI assembler and the m88k use pseudo-ops | |
584 | without a period. */ | |
585 | pop = (pseudo_typeS *) hash_find (po_hash, s); | |
586 | if (pop != NULL && pop->poc_handler == NULL) | |
587 | pop = NULL; | |
588 | } | |
8ff6f40e ILT |
589 | |
590 | if (pop != NULL || *s == '.') | |
6efd877d KR |
591 | { |
592 | /* | |
9471a360 KR |
593 | * PSEUDO - OP. |
594 | * | |
595 | * WARNING: c has next char, which may be end-of-line. | |
596 | * We lookup the pseudo-op table with s+1 because we | |
597 | * already know that the pseudo-op begins with a '.'. | |
598 | */ | |
6efd877d | 599 | |
8ff6f40e ILT |
600 | if (pop == NULL) |
601 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
6efd877d | 602 | |
286cb27a ILT |
603 | /* In MRI mode, we may need to insert an |
604 | automatic alignment directive. What a hack | |
605 | this is. */ | |
606 | if (mri_pending_align | |
607 | && (pop == NULL | |
608 | || ! ((pop->poc_handler == cons | |
609 | && pop->poc_val == 1) | |
610 | || (pop->poc_handler == s_space | |
611 | && pop->poc_val == 1)))) | |
612 | { | |
613 | do_align (1, (char *) NULL); | |
614 | mri_pending_align = 0; | |
615 | } | |
616 | ||
6efd877d | 617 | /* Print the error msg now, while we still can */ |
8ff6f40e | 618 | if (pop == NULL) |
6efd877d KR |
619 | { |
620 | as_bad ("Unknown pseudo-op: `%s'", s); | |
f8701a3f | 621 | *input_line_pointer = c; |
6efd877d | 622 | s_ignore (0); |
46b81190 | 623 | continue; |
6efd877d KR |
624 | } |
625 | ||
626 | /* Put it back for error messages etc. */ | |
627 | *input_line_pointer = c; | |
9c6d3f66 KR |
628 | /* The following skip of whitespace is compulsory. |
629 | A well shaped space is sometimes all that separates | |
630 | keyword from operands. */ | |
6efd877d | 631 | if (c == ' ' || c == '\t') |
d4c8cbd8 | 632 | input_line_pointer++; |
6efd877d | 633 | /* |
9471a360 KR |
634 | * Input_line is restored. |
635 | * Input_line_pointer->1st non-blank char | |
636 | * after pseudo-operation. | |
637 | */ | |
46b81190 | 638 | (*pop->poc_handler) (pop->poc_val); |
e28c40d7 ILT |
639 | |
640 | /* If that was .end, just get out now. */ | |
641 | if (pop->poc_handler == s_end) | |
642 | goto quit; | |
6efd877d KR |
643 | } |
644 | else | |
6efd877d | 645 | { /* machine instruction */ |
286cb27a ILT |
646 | if (mri_pending_align) |
647 | { | |
648 | do_align (1, (char *) NULL); | |
649 | mri_pending_align = 0; | |
650 | } | |
651 | ||
6efd877d KR |
652 | /* WARNING: c has char, which may be end-of-line. */ |
653 | /* Also: input_line_pointer->`\0` where c was. */ | |
654 | *input_line_pointer = c; | |
58d4951d | 655 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
4064305e SS |
656 | #ifdef TC_EOL_IN_INSN |
657 | || TC_EOL_IN_INSN (input_line_pointer) | |
658 | #endif | |
659 | ) | |
6efd877d KR |
660 | { |
661 | input_line_pointer++; | |
662 | } | |
f8701a3f | 663 | |
6efd877d KR |
664 | c = *input_line_pointer; |
665 | *input_line_pointer = '\0'; | |
f8701a3f | 666 | |
326d16ca KH |
667 | #ifdef OBJ_GENERATE_ASM_LINENO |
668 | if (generate_asm_lineno == 0) | |
669 | { | |
f10a96cb | 670 | if (ecoff_no_current_file ()) |
326d16ca KH |
671 | generate_asm_lineno = 1; |
672 | } | |
f10a96cb ILT |
673 | if (generate_asm_lineno == 1) |
674 | { | |
1b434ced ILT |
675 | unsigned int lineno; |
676 | char *s; | |
677 | ||
daad3bbf | 678 | as_where (&s, &lineno); |
326d16ca | 679 | OBJ_GENERATE_ASM_LINENO (s, lineno); |
f10a96cb | 680 | } |
daad3bbf KH |
681 | #endif |
682 | ||
6efd877d | 683 | md_assemble (s); /* Assemble 1 instruction. */ |
f8701a3f | 684 | |
6efd877d | 685 | *input_line_pointer++ = c; |
f8701a3f | 686 | |
d4c8cbd8 JL |
687 | /* We resume loop AFTER the end-of-line from |
688 | this instruction. */ | |
6efd877d | 689 | } /* if (*s=='.') */ |
6efd877d | 690 | } /* if c==':' */ |
f8701a3f | 691 | continue; |
6efd877d | 692 | } /* if (is_name_beginner(c) */ |
f8701a3f | 693 | |
f8701a3f | 694 | |
d4c8cbd8 | 695 | /* Empty statement? */ |
58d4951d | 696 | if (is_end_of_line[(unsigned char) c]) |
d4c8cbd8 | 697 | continue; |
6efd877d | 698 | |
9777b772 KR |
699 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) |
700 | && isdigit (c)) | |
d4c8cbd8 JL |
701 | { |
702 | /* local label ("4:") */ | |
6efd877d KR |
703 | char *backup = input_line_pointer; |
704 | ||
705 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
706 | ||
707 | temp = c - '0'; | |
708 | ||
709 | while (isdigit (*input_line_pointer)) | |
710 | { | |
711 | temp = (temp * 10) + *input_line_pointer - '0'; | |
712 | ++input_line_pointer; | |
713 | } /* read the whole number */ | |
714 | ||
9777b772 KR |
715 | if (LOCAL_LABELS_DOLLAR |
716 | && *input_line_pointer == '$' | |
6efd877d KR |
717 | && *(input_line_pointer + 1) == ':') |
718 | { | |
719 | input_line_pointer += 2; | |
720 | ||
721 | if (dollar_label_defined (temp)) | |
722 | { | |
723 | as_fatal ("label \"%d$\" redefined", temp); | |
724 | } | |
725 | ||
726 | define_dollar_label (temp); | |
727 | colon (dollar_label_name (temp, 0)); | |
728 | continue; | |
729 | } | |
6efd877d | 730 | |
9777b772 KR |
731 | if (LOCAL_LABELS_FB |
732 | && *input_line_pointer++ == ':') | |
6efd877d KR |
733 | { |
734 | fb_label_instance_inc (temp); | |
735 | colon (fb_label_name (temp, 0)); | |
736 | continue; | |
737 | } | |
6efd877d KR |
738 | |
739 | input_line_pointer = backup; | |
740 | } /* local label ("4:") */ | |
f8701a3f | 741 | |
6efd877d KR |
742 | if (c && strchr (line_comment_chars, c)) |
743 | { /* Its a comment. Better say APP or NO_APP */ | |
f8701a3f SC |
744 | char *ends; |
745 | char *new_buf; | |
746 | char *new_tmp; | |
604633ae | 747 | unsigned int new_length; |
f8701a3f | 748 | char *tmp_buf = 0; |
6efd877d KR |
749 | extern char *scrub_string, *scrub_last_string; |
750 | ||
751 | bump_line_counters (); | |
752 | s = input_line_pointer; | |
753 | if (strncmp (s, "APP\n", 4)) | |
754 | continue; /* We ignore it */ | |
755 | s += 4; | |
756 | ||
757 | ends = strstr (s, "#NO_APP\n"); | |
758 | ||
759 | if (!ends) | |
760 | { | |
604633ae ILT |
761 | unsigned int tmp_len; |
762 | unsigned int num; | |
6efd877d | 763 | |
f8701a3f SC |
764 | /* The end of the #APP wasn't in this buffer. We |
765 | keep reading in buffers until we find the #NO_APP | |
766 | that goes with this #APP There is one. The specs | |
767 | guarentee it. . . */ | |
6efd877d | 768 | tmp_len = buffer_limit - s; |
85825401 | 769 | tmp_buf = xmalloc (tmp_len + 1); |
4380166d | 770 | memcpy (tmp_buf, s, tmp_len); |
6efd877d KR |
771 | do |
772 | { | |
773 | new_tmp = input_scrub_next_buffer (&buffer); | |
f8701a3f | 774 | if (!new_tmp) |
6efd877d | 775 | break; |
f8701a3f | 776 | else |
6efd877d | 777 | buffer_limit = new_tmp; |
f8701a3f | 778 | input_line_pointer = buffer; |
6efd877d | 779 | ends = strstr (buffer, "#NO_APP\n"); |
f8701a3f | 780 | if (ends) |
6efd877d | 781 | num = ends - buffer; |
f8701a3f | 782 | else |
6efd877d KR |
783 | num = buffer_limit - buffer; |
784 | ||
785 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
9eb5f4b8 | 786 | memcpy (tmp_buf + tmp_len, buffer, num); |
6efd877d KR |
787 | tmp_len += num; |
788 | } | |
789 | while (!ends); | |
790 | ||
791 | input_line_pointer = ends ? ends + 8 : NULL; | |
792 | ||
793 | s = tmp_buf; | |
794 | ends = s + tmp_len; | |
795 | ||
796 | } | |
797 | else | |
798 | { | |
799 | input_line_pointer = ends + 8; | |
800 | } | |
801 | new_buf = xmalloc (100); | |
802 | new_length = 100; | |
803 | new_tmp = new_buf; | |
804 | ||
805 | scrub_string = s; | |
f8701a3f | 806 | scrub_last_string = ends; |
6efd877d KR |
807 | for (;;) |
808 | { | |
f8701a3f SC |
809 | int ch; |
810 | ||
6efd877d KR |
811 | ch = do_scrub_next_char (scrub_from_string, scrub_to_string); |
812 | if (ch == EOF) | |
813 | break; | |
814 | *new_tmp++ = ch; | |
815 | if (new_tmp == new_buf + new_length) | |
816 | { | |
817 | new_buf = xrealloc (new_buf, new_length + 100); | |
818 | new_tmp = new_buf + new_length; | |
819 | new_length += 100; | |
f8701a3f | 820 | } |
fecd2382 | 821 | } |
f8701a3f SC |
822 | |
823 | if (tmp_buf) | |
6efd877d KR |
824 | free (tmp_buf); |
825 | old_buffer = buffer; | |
826 | old_input = input_line_pointer; | |
827 | old_limit = buffer_limit; | |
828 | buffer = new_buf; | |
829 | input_line_pointer = new_buf; | |
830 | buffer_limit = new_tmp; | |
f8701a3f SC |
831 | continue; |
832 | } | |
833 | ||
6efd877d | 834 | HANDLE_CONDITIONAL_ASSEMBLY (); |
f8701a3f SC |
835 | |
836 | /* as_warn("Junk character %d.",c); Now done by ignore_rest */ | |
837 | input_line_pointer--; /* Report unknown char as ignored. */ | |
6efd877d KR |
838 | ignore_rest_of_line (); |
839 | } /* while (input_line_pointer<buffer_limit) */ | |
a2a5a4fa KR |
840 | |
841 | #ifdef md_after_pass_hook | |
842 | md_after_pass_hook (); | |
843 | #endif | |
844 | ||
6efd877d KR |
845 | if (old_buffer) |
846 | { | |
847 | bump_line_counters (); | |
848 | if (old_input != 0) | |
849 | { | |
850 | buffer = old_buffer; | |
851 | input_line_pointer = old_input; | |
852 | buffer_limit = old_limit; | |
f8701a3f SC |
853 | old_buffer = 0; |
854 | goto contin; | |
855 | } | |
856 | } | |
6efd877d | 857 | } /* while (more buffers to scan) */ |
f8701a3f | 858 | |
e28c40d7 ILT |
859 | quit: |
860 | input_scrub_close (); /* Close the input file */ | |
4075afe1 | 861 | } |
fecd2382 | 862 | |
6efd877d | 863 | void |
604633ae ILT |
864 | s_abort (ignore) |
865 | int ignore; | |
6efd877d KR |
866 | { |
867 | as_fatal (".abort detected. Abandoning ship."); | |
4075afe1 KR |
868 | } |
869 | ||
870 | /* Guts of .align directive. */ | |
871 | static void | |
872 | do_align (n, fill) | |
873 | int n; | |
874 | char *fill; | |
875 | { | |
876 | #ifdef md_do_align | |
877 | md_do_align (n, fill, just_record_alignment); | |
878 | #endif | |
879 | if (!fill) | |
880 | { | |
881 | /* @@ Fix this right for BFD! */ | |
882 | static char zero; | |
883 | static char nop_opcode = NOP_OPCODE; | |
884 | ||
885 | if (now_seg != data_section && now_seg != bss_section) | |
886 | { | |
887 | fill = &nop_opcode; | |
888 | } | |
889 | else | |
890 | { | |
891 | fill = &zero; | |
892 | } | |
893 | } | |
894 | /* Only make a frag if we HAVE to. . . */ | |
895 | if (n && !need_pass_2) | |
896 | frag_align (n, *fill); | |
897 | ||
c02fd8dc | 898 | #ifdef md_do_align |
4075afe1 | 899 | just_record_alignment: |
c02fd8dc ILT |
900 | #endif |
901 | ||
4075afe1 KR |
902 | record_alignment (now_seg, n); |
903 | } | |
fecd2382 RP |
904 | |
905 | /* For machines where ".align 4" means align to a 4 byte boundary. */ | |
6efd877d KR |
906 | void |
907 | s_align_bytes (arg) | |
908 | int arg; | |
fecd2382 | 909 | { |
6efd877d | 910 | register unsigned int temp; |
4075afe1 | 911 | char temp_fill; |
6efd877d KR |
912 | unsigned int i = 0; |
913 | unsigned long max_alignment = 1 << 15; | |
f8701a3f | 914 | |
58d4951d | 915 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
916 | temp = arg; /* Default value from pseudo-op table */ |
917 | else | |
918 | temp = get_absolute_expression (); | |
f8701a3f | 919 | |
6efd877d KR |
920 | if (temp > max_alignment) |
921 | { | |
922 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
f8701a3f SC |
923 | } |
924 | ||
4075afe1 KR |
925 | /* For the sparc, `.align (1<<n)' actually means `.align n' so we |
926 | have to convert it. */ | |
6efd877d KR |
927 | if (temp != 0) |
928 | { | |
929 | for (i = 0; (temp & 1) == 0; temp >>= 1, ++i) | |
930 | ; | |
f8701a3f | 931 | } |
6efd877d KR |
932 | if (temp != 1) |
933 | as_bad ("Alignment not a power of 2"); | |
f8701a3f | 934 | |
6efd877d KR |
935 | temp = i; |
936 | if (*input_line_pointer == ',') | |
937 | { | |
938 | input_line_pointer++; | |
939 | temp_fill = get_absolute_expression (); | |
4075afe1 | 940 | do_align (temp, &temp_fill); |
f8701a3f | 941 | } |
6efd877d | 942 | else |
4075afe1 | 943 | do_align (temp, (char *) 0); |
49864cfa | 944 | |
6efd877d | 945 | demand_empty_rest_of_line (); |
4075afe1 | 946 | } |
fecd2382 RP |
947 | |
948 | /* For machines where ".align 4" means align to 2**4 boundary. */ | |
6efd877d | 949 | void |
604633ae ILT |
950 | s_align_ptwo (ignore) |
951 | int ignore; | |
6efd877d KR |
952 | { |
953 | register int temp; | |
4075afe1 | 954 | char temp_fill; |
6efd877d KR |
955 | long max_alignment = 15; |
956 | ||
957 | temp = get_absolute_expression (); | |
958 | if (temp > max_alignment) | |
959 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
960 | else if (temp < 0) | |
961 | { | |
962 | as_bad ("Alignment negative. 0 assumed."); | |
963 | temp = 0; | |
964 | } | |
965 | if (*input_line_pointer == ',') | |
966 | { | |
967 | input_line_pointer++; | |
968 | temp_fill = get_absolute_expression (); | |
4075afe1 | 969 | do_align (temp, &temp_fill); |
6efd877d KR |
970 | } |
971 | else | |
4075afe1 | 972 | do_align (temp, (char *) 0); |
6efd877d KR |
973 | |
974 | demand_empty_rest_of_line (); | |
4075afe1 | 975 | } |
6efd877d KR |
976 | |
977 | void | |
604633ae ILT |
978 | s_comm (ignore) |
979 | int ignore; | |
6efd877d KR |
980 | { |
981 | register char *name; | |
982 | register char c; | |
983 | register char *p; | |
58d4951d | 984 | offsetT temp; |
6efd877d KR |
985 | register symbolS *symbolP; |
986 | ||
987 | name = input_line_pointer; | |
988 | c = get_symbol_end (); | |
989 | /* just after name is now '\0' */ | |
990 | p = input_line_pointer; | |
991 | *p = c; | |
992 | SKIP_WHITESPACE (); | |
993 | if (*input_line_pointer != ',') | |
994 | { | |
995 | as_bad ("Expected comma after symbol-name: rest of line ignored."); | |
996 | ignore_rest_of_line (); | |
997 | return; | |
998 | } | |
999 | input_line_pointer++; /* skip ',' */ | |
1000 | if ((temp = get_absolute_expression ()) < 0) | |
1001 | { | |
58d4951d | 1002 | as_warn (".COMMon length (%ld.) <0! Ignored.", (long) temp); |
6efd877d KR |
1003 | ignore_rest_of_line (); |
1004 | return; | |
1005 | } | |
1006 | *p = 0; | |
1007 | symbolP = symbol_find_or_make (name); | |
1008 | *p = c; | |
1009 | if (S_IS_DEFINED (symbolP)) | |
1010 | { | |
6ef37255 KR |
1011 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
1012 | S_GET_NAME (symbolP)); | |
6efd877d KR |
1013 | ignore_rest_of_line (); |
1014 | return; | |
1015 | } | |
1016 | if (S_GET_VALUE (symbolP)) | |
1017 | { | |
58d4951d ILT |
1018 | if (S_GET_VALUE (symbolP) != (valueT) temp) |
1019 | as_bad ("Length of .comm \"%s\" is already %ld. Not changed to %ld.", | |
6efd877d | 1020 | S_GET_NAME (symbolP), |
58d4951d ILT |
1021 | (long) S_GET_VALUE (symbolP), |
1022 | (long) temp); | |
6efd877d KR |
1023 | } |
1024 | else | |
1025 | { | |
58d4951d | 1026 | S_SET_VALUE (symbolP, (valueT) temp); |
6efd877d KR |
1027 | S_SET_EXTERNAL (symbolP); |
1028 | } | |
9471a360 | 1029 | #ifdef OBJ_VMS |
def66e24 DM |
1030 | { |
1031 | extern int flag_one; | |
1032 | if ( (!temp) || !flag_one) | |
1033 | S_GET_OTHER(symbolP) = const_flag; | |
1034 | } | |
9471a360 | 1035 | #endif /* not OBJ_VMS */ |
6efd877d KR |
1036 | know (symbolP->sy_frag == &zero_address_frag); |
1037 | demand_empty_rest_of_line (); | |
1038 | } /* s_comm() */ | |
fecd2382 | 1039 | |
1356d77d ILT |
1040 | /* The MRI COMMON pseudo-op. We handle this by creating a common |
1041 | symbol with the appropriate name. We make s_space do the right | |
1042 | thing by increasing the size. */ | |
1043 | ||
1044 | void | |
1045 | s_mri_common (small) | |
1046 | int small; | |
1047 | { | |
1048 | char *name; | |
1049 | char c; | |
1050 | char *alc = NULL; | |
1051 | symbolS *sym; | |
1052 | offsetT align; | |
1053 | ||
1054 | if (! flag_mri) | |
1055 | { | |
1056 | s_comm (0); | |
1057 | return; | |
1058 | } | |
1059 | ||
1060 | SKIP_WHITESPACE (); | |
1061 | ||
1062 | name = input_line_pointer; | |
1063 | if (! isdigit ((unsigned char) *name)) | |
1064 | c = get_symbol_end (); | |
1065 | else | |
1066 | { | |
1067 | do | |
1068 | { | |
1069 | ++input_line_pointer; | |
1070 | } | |
1071 | while (isdigit ((unsigned char) *input_line_pointer)); | |
1072 | c = *input_line_pointer; | |
1073 | *input_line_pointer = '\0'; | |
1074 | ||
1075 | if (mri_line_label != NULL) | |
1076 | { | |
1077 | alc = (char *) xmalloc (strlen (S_GET_NAME (mri_line_label)) | |
1078 | + (input_line_pointer - name) | |
1079 | + 1); | |
1080 | sprintf (alc, "%s%s", name, S_GET_NAME (mri_line_label)); | |
1081 | name = alc; | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | sym = symbol_find_or_make (name); | |
1086 | *input_line_pointer = c; | |
1087 | if (alc != NULL) | |
1088 | free (alc); | |
1089 | ||
1090 | if (*input_line_pointer != ',') | |
1091 | align = 0; | |
1092 | else | |
1093 | { | |
1094 | ++input_line_pointer; | |
1095 | align = get_absolute_expression (); | |
1096 | } | |
1097 | ||
1098 | if (S_IS_DEFINED (sym)) | |
1099 | { | |
1100 | #if defined (S_IS_COMMON) || defined (BFD_ASSEMBLER) | |
1101 | if (! S_IS_COMMON (sym)) | |
1102 | #endif | |
1103 | { | |
1104 | as_bad ("attempt to re-define symbol `%s'", S_GET_NAME (sym)); | |
1105 | ignore_rest_of_line (); | |
1106 | return; | |
1107 | } | |
1108 | } | |
1109 | ||
1110 | S_SET_EXTERNAL (sym); | |
1111 | mri_common_symbol = sym; | |
1112 | ||
1113 | #ifdef S_SET_ALIGN | |
1114 | if (align != 0) | |
1115 | S_SET_ALIGN (sym, align); | |
1116 | #endif | |
1117 | ||
1118 | if (mri_line_label != NULL) | |
1119 | { | |
1120 | mri_line_label->sy_value.X_op = O_symbol; | |
1121 | mri_line_label->sy_value.X_add_symbol = sym; | |
1122 | mri_line_label->sy_value.X_add_number = S_GET_VALUE (sym); | |
1123 | mri_line_label->sy_frag = &zero_address_frag; | |
1124 | S_SET_SEGMENT (mri_line_label, expr_section); | |
1125 | } | |
1126 | ||
1127 | /* FIXME: We just ignore the small argument, which distinguishes | |
1128 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1129 | ||
1130 | /* Ignore the type and hptype. */ | |
1131 | if (*input_line_pointer == ',') | |
1132 | input_line_pointer += 2; | |
1133 | if (*input_line_pointer == ',') | |
1134 | input_line_pointer += 2; | |
1135 | demand_empty_rest_of_line (); | |
1136 | } | |
1137 | ||
fecd2382 | 1138 | void |
604633ae ILT |
1139 | s_data (ignore) |
1140 | int ignore; | |
fecd2382 | 1141 | { |
ffffc8fb | 1142 | segT section; |
6efd877d | 1143 | register int temp; |
f8701a3f | 1144 | |
6efd877d | 1145 | temp = get_absolute_expression (); |
def66e24 | 1146 | if (flag_readonly_data_in_text) |
ffffc8fb ILT |
1147 | { |
1148 | section = text_section; | |
1149 | temp += 1000; | |
1150 | } | |
1151 | else | |
1152 | section = data_section; | |
1153 | ||
ffffc8fb | 1154 | subseg_set (section, (subsegT) temp); |
f8701a3f | 1155 | |
9471a360 | 1156 | #ifdef OBJ_VMS |
6efd877d | 1157 | const_flag = 0; |
fecd2382 | 1158 | #endif |
6efd877d | 1159 | demand_empty_rest_of_line (); |
fecd2382 RP |
1160 | } |
1161 | ||
9a7d824a ILT |
1162 | /* Handle the .appfile pseudo-op. This is automatically generated by |
1163 | do_scrub_next_char when a preprocessor # line comment is seen with | |
1164 | a file name. This default definition may be overridden by the | |
1165 | object or CPU specific pseudo-ops. This function is also the | |
1166 | default definition for .file; the APPFILE argument is 1 for | |
1167 | .appfile, 0 for .file. */ | |
1168 | ||
6efd877d | 1169 | void |
9a7d824a ILT |
1170 | s_app_file (appfile) |
1171 | int appfile; | |
6efd877d KR |
1172 | { |
1173 | register char *s; | |
1174 | int length; | |
f8701a3f | 1175 | |
6efd877d KR |
1176 | /* Some assemblers tolerate immediately following '"' */ |
1177 | if ((s = demand_copy_string (&length)) != 0) | |
1178 | { | |
9a7d824a ILT |
1179 | /* If this is a fake .appfile, a fake newline was inserted into |
1180 | the buffer. Passing -2 to new_logical_line tells it to | |
1181 | account for it. */ | |
1182 | new_logical_line (s, appfile ? -2 : -1); | |
6efd877d | 1183 | demand_empty_rest_of_line (); |
9a7d824a ILT |
1184 | #ifdef LISTING |
1185 | if (listing) | |
1186 | listing_source_file (s); | |
1187 | #endif | |
6efd877d | 1188 | } |
2209b19c KR |
1189 | #ifdef obj_app_file |
1190 | obj_app_file (s); | |
40324362 KR |
1191 | #endif |
1192 | } | |
fecd2382 | 1193 | |
9a7d824a ILT |
1194 | /* Handle the .appline pseudo-op. This is automatically generated by |
1195 | do_scrub_next_char when a preprocessor # line comment is seen. | |
1196 | This default definition may be overridden by the object or CPU | |
1197 | specific pseudo-ops. */ | |
1198 | ||
1199 | void | |
604633ae ILT |
1200 | s_app_line (ignore) |
1201 | int ignore; | |
9a7d824a ILT |
1202 | { |
1203 | int l; | |
1204 | ||
1205 | /* The given number is that of the next line. */ | |
1206 | l = get_absolute_expression () - 1; | |
931a8fab KR |
1207 | if (l < 0) |
1208 | /* Some of the back ends can't deal with non-positive line numbers. | |
1209 | Besides, it's silly. */ | |
1210 | as_warn ("Line numbers must be positive; line number %d rejected.", l+1); | |
1211 | else | |
1212 | { | |
1213 | new_logical_line ((char *) NULL, l); | |
9a7d824a | 1214 | #ifdef LISTING |
931a8fab KR |
1215 | if (listing) |
1216 | listing_source_line (l); | |
9a7d824a | 1217 | #endif |
931a8fab | 1218 | } |
9a7d824a ILT |
1219 | demand_empty_rest_of_line (); |
1220 | } | |
1221 | ||
e28c40d7 ILT |
1222 | /* Handle the .end pseudo-op. Actually, the real work is done in |
1223 | read_a_source_file. */ | |
1224 | ||
1225 | void | |
1226 | s_end (ignore) | |
1227 | int ignore; | |
1228 | { | |
1229 | if (flag_mri) | |
1230 | { | |
1231 | /* The MRI assembler permits the start symbol to follow .end, | |
1232 | but we don't support that. */ | |
1233 | SKIP_WHITESPACE (); | |
1234 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1235 | as_warn ("start address not supported"); | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | /* Handle the MRI fail pseudo-op. */ | |
1240 | ||
1241 | void | |
1242 | s_fail (ignore) | |
1243 | int ignore; | |
1244 | { | |
1245 | offsetT temp; | |
1246 | ||
1247 | temp = get_absolute_expression (); | |
1248 | if (temp >= 500) | |
1249 | as_warn (".fail %ld encountered", (long) temp); | |
1250 | else | |
1251 | as_bad (".fail %ld encountered", (long) temp); | |
1252 | demand_empty_rest_of_line (); | |
1253 | } | |
1254 | ||
6efd877d | 1255 | void |
604633ae ILT |
1256 | s_fill (ignore) |
1257 | int ignore; | |
6efd877d KR |
1258 | { |
1259 | long temp_repeat = 0; | |
1260 | long temp_size = 1; | |
1261 | register long temp_fill = 0; | |
1262 | char *p; | |
f8701a3f | 1263 | |
7c2d4011 | 1264 | |
6efd877d KR |
1265 | temp_repeat = get_absolute_expression (); |
1266 | if (*input_line_pointer == ',') | |
1267 | { | |
1268 | input_line_pointer++; | |
1269 | temp_size = get_absolute_expression (); | |
1270 | if (*input_line_pointer == ',') | |
7c2d4011 SC |
1271 | { |
1272 | input_line_pointer++; | |
6efd877d | 1273 | temp_fill = get_absolute_expression (); |
fecd2382 | 1274 | } |
6efd877d | 1275 | } |
c8863a58 | 1276 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ |
fecd2382 | 1277 | #define BSD_FILL_SIZE_CROCK_8 (8) |
6efd877d KR |
1278 | if (temp_size > BSD_FILL_SIZE_CROCK_8) |
1279 | { | |
1280 | as_warn (".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8); | |
1281 | temp_size = BSD_FILL_SIZE_CROCK_8; | |
1282 | } | |
1283 | if (temp_size < 0) | |
1284 | { | |
1285 | as_warn ("Size negative: .fill ignored."); | |
1286 | temp_size = 0; | |
1287 | } | |
1288 | else if (temp_repeat <= 0) | |
1289 | { | |
1290 | as_warn ("Repeat < 0, .fill ignored"); | |
1291 | temp_size = 0; | |
1292 | } | |
7fd3560a | 1293 | |
6efd877d KR |
1294 | if (temp_size && !need_pass_2) |
1295 | { | |
1296 | p = frag_var (rs_fill, (int) temp_size, (int) temp_size, (relax_substateT) 0, (symbolS *) 0, temp_repeat, (char *) 0); | |
604633ae | 1297 | memset (p, 0, (unsigned int) temp_size); |
c8863a58 KR |
1298 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
1299 | * flavoured AS. The following bizzare behaviour is to be | |
1300 | * compatible with above. I guess they tried to take up to 8 | |
1301 | * bytes from a 4-byte expression and they forgot to sign | |
1302 | * extend. Un*x Sux. */ | |
fecd2382 | 1303 | #define BSD_FILL_SIZE_CROCK_4 (4) |
604633ae | 1304 | md_number_to_chars (p, (valueT) temp_fill, |
c8863a58 KR |
1305 | (temp_size > BSD_FILL_SIZE_CROCK_4 |
1306 | ? BSD_FILL_SIZE_CROCK_4 | |
1307 | : (int) temp_size)); | |
1308 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
1309 | * but emits no error message because it seems a legal thing to do. | |
1310 | * It is a degenerate case of .fill but could be emitted by a compiler. | |
1311 | */ | |
6efd877d | 1312 | } |
6efd877d | 1313 | demand_empty_rest_of_line (); |
f8701a3f SC |
1314 | } |
1315 | ||
6efd877d | 1316 | void |
604633ae ILT |
1317 | s_globl (ignore) |
1318 | int ignore; | |
6efd877d | 1319 | { |
40324362 KR |
1320 | char *name; |
1321 | int c; | |
1322 | symbolS *symbolP; | |
fecd2382 | 1323 | |
6efd877d KR |
1324 | do |
1325 | { | |
1326 | name = input_line_pointer; | |
1327 | c = get_symbol_end (); | |
1328 | symbolP = symbol_find_or_make (name); | |
1329 | *input_line_pointer = c; | |
1330 | SKIP_WHITESPACE (); | |
1331 | S_SET_EXTERNAL (symbolP); | |
1332 | if (c == ',') | |
1333 | { | |
1334 | input_line_pointer++; | |
1335 | SKIP_WHITESPACE (); | |
1336 | if (*input_line_pointer == '\n') | |
1337 | c = '\n'; | |
1338 | } | |
1339 | } | |
1340 | while (c == ','); | |
1341 | demand_empty_rest_of_line (); | |
40324362 | 1342 | } |
6efd877d KR |
1343 | |
1344 | void | |
1345 | s_lcomm (needs_align) | |
c8863a58 KR |
1346 | /* 1 if this was a ".bss" directive, which may require a 3rd argument |
1347 | (alignment); 0 if it was an ".lcomm" (2 args only) */ | |
1348 | int needs_align; | |
fecd2382 | 1349 | { |
6efd877d KR |
1350 | register char *name; |
1351 | register char c; | |
1352 | register char *p; | |
1353 | register int temp; | |
1354 | register symbolS *symbolP; | |
9a7d824a ILT |
1355 | segT current_seg = now_seg; |
1356 | subsegT current_subseg = now_subseg; | |
6efd877d KR |
1357 | const int max_alignment = 15; |
1358 | int align = 0; | |
9a7d824a | 1359 | segT bss_seg = bss_section; |
6efd877d KR |
1360 | |
1361 | name = input_line_pointer; | |
1362 | c = get_symbol_end (); | |
1363 | p = input_line_pointer; | |
1364 | *p = c; | |
1365 | SKIP_WHITESPACE (); | |
46b81190 ILT |
1366 | |
1367 | /* Accept an optional comma after the name. The comma used to be | |
1368 | required, but Irix 5 cc does not generate it. */ | |
1369 | if (*input_line_pointer == ',') | |
6efd877d | 1370 | { |
46b81190 ILT |
1371 | ++input_line_pointer; |
1372 | SKIP_WHITESPACE (); | |
6efd877d | 1373 | } |
f8701a3f | 1374 | |
6efd877d KR |
1375 | if (*input_line_pointer == '\n') |
1376 | { | |
1377 | as_bad ("Missing size expression"); | |
1378 | return; | |
1379 | } | |
f8701a3f | 1380 | |
6efd877d KR |
1381 | if ((temp = get_absolute_expression ()) < 0) |
1382 | { | |
1383 | as_warn ("BSS length (%d.) <0! Ignored.", temp); | |
1384 | ignore_rest_of_line (); | |
1385 | return; | |
1386 | } | |
f8701a3f | 1387 | |
2ef7731d | 1388 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
a2a5a4fa KR |
1389 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour |
1390 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
46b81190 | 1391 | { |
a2a5a4fa KR |
1392 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ |
1393 | if (temp <= bfd_get_gp_size (stdoutput)) | |
1394 | { | |
1395 | bss_seg = subseg_new (".sbss", 1); | |
1396 | seg_info (bss_seg)->bss = 1; | |
1397 | } | |
46b81190 | 1398 | } |
9a7d824a | 1399 | #endif |
ede7bc1c SC |
1400 | if (!needs_align) |
1401 | { | |
1402 | /* FIXME. This needs to be machine independent. */ | |
9d90491e ILT |
1403 | if (temp >= 8) |
1404 | align = 3; | |
1405 | else if (temp >= 4) | |
ede7bc1c SC |
1406 | align = 2; |
1407 | else if (temp >= 2) | |
1408 | align = 1; | |
1409 | else | |
c71a604a | 1410 | align = 0; |
ede7bc1c SC |
1411 | |
1412 | record_alignment(bss_seg, align); | |
1413 | } | |
9a7d824a | 1414 | |
6efd877d KR |
1415 | if (needs_align) |
1416 | { | |
1417 | align = 0; | |
1418 | SKIP_WHITESPACE (); | |
1419 | if (*input_line_pointer != ',') | |
1420 | { | |
1421 | as_bad ("Expected comma after size"); | |
1422 | ignore_rest_of_line (); | |
1423 | return; | |
1424 | } | |
1425 | input_line_pointer++; | |
1426 | SKIP_WHITESPACE (); | |
1427 | if (*input_line_pointer == '\n') | |
1428 | { | |
1429 | as_bad ("Missing alignment"); | |
1430 | return; | |
1431 | } | |
1432 | align = get_absolute_expression (); | |
1433 | if (align > max_alignment) | |
1434 | { | |
1435 | align = max_alignment; | |
1436 | as_warn ("Alignment too large: %d. assumed.", align); | |
1437 | } | |
1438 | else if (align < 0) | |
1439 | { | |
1440 | align = 0; | |
1441 | as_warn ("Alignment negative. 0 assumed."); | |
1442 | } | |
9a7d824a | 1443 | record_alignment (bss_seg, align); |
6efd877d | 1444 | } /* if needs align */ |
4075afe1 KR |
1445 | else |
1446 | { | |
1447 | /* Assume some objects may require alignment on some systems. */ | |
1448 | #ifdef TC_ALPHA | |
1449 | if (temp > 1) | |
1450 | { | |
1451 | align = ffs (temp) - 1; | |
1452 | if (temp % (1 << align)) | |
1453 | abort (); | |
1454 | } | |
1455 | #endif | |
1456 | } | |
f8701a3f | 1457 | |
6efd877d KR |
1458 | *p = 0; |
1459 | symbolP = symbol_find_or_make (name); | |
1460 | *p = c; | |
f8701a3f | 1461 | |
6efd877d | 1462 | if ( |
fecd2382 | 1463 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
1464 | S_GET_OTHER (symbolP) == 0 && |
1465 | S_GET_DESC (symbolP) == 0 && | |
fecd2382 | 1466 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
9a7d824a | 1467 | (S_GET_SEGMENT (symbolP) == bss_seg |
6efd877d KR |
1468 | || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0))) |
1469 | { | |
604633ae | 1470 | char *pfrag; |
85825401 | 1471 | |
9a7d824a | 1472 | subseg_set (bss_seg, 1); |
85825401 ILT |
1473 | |
1474 | if (align) | |
1475 | frag_align (align, 0); | |
1476 | /* detach from old frag */ | |
9a7d824a | 1477 | if (S_GET_SEGMENT (symbolP) == bss_seg) |
85825401 ILT |
1478 | symbolP->sy_frag->fr_symbol = NULL; |
1479 | ||
1480 | symbolP->sy_frag = frag_now; | |
604633ae ILT |
1481 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP, |
1482 | temp, (char *)0); | |
1483 | *pfrag = 0; | |
f8701a3f | 1484 | |
9a7d824a | 1485 | S_SET_SEGMENT (symbolP, bss_seg); |
85825401 | 1486 | |
fecd2382 | 1487 | #ifdef OBJ_COFF |
6efd877d | 1488 | /* The symbol may already have been created with a preceding |
c8863a58 KR |
1489 | ".globl" directive -- be careful not to step on storage class |
1490 | in that case. Otherwise, set it to static. */ | |
6efd877d KR |
1491 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) |
1492 | { | |
1493 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
fecd2382 | 1494 | } |
6efd877d | 1495 | #endif /* OBJ_COFF */ |
6efd877d KR |
1496 | } |
1497 | else | |
6ef37255 KR |
1498 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
1499 | S_GET_NAME (symbolP)); | |
f8701a3f | 1500 | |
9a7d824a | 1501 | subseg_set (current_seg, current_subseg); |
9a7d824a ILT |
1502 | |
1503 | demand_empty_rest_of_line (); | |
6efd877d | 1504 | } /* s_lcomm() */ |
fecd2382 | 1505 | |
6efd877d | 1506 | void |
604633ae ILT |
1507 | s_lsym (ignore) |
1508 | int ignore; | |
6efd877d KR |
1509 | { |
1510 | register char *name; | |
1511 | register char c; | |
1512 | register char *p; | |
6efd877d KR |
1513 | expressionS exp; |
1514 | register symbolS *symbolP; | |
1515 | ||
1516 | /* we permit ANY defined expression: BSD4.2 demands constants */ | |
1517 | name = input_line_pointer; | |
1518 | c = get_symbol_end (); | |
1519 | p = input_line_pointer; | |
1520 | *p = c; | |
1521 | SKIP_WHITESPACE (); | |
1522 | if (*input_line_pointer != ',') | |
1523 | { | |
1524 | *p = 0; | |
1525 | as_bad ("Expected comma after name \"%s\"", name); | |
1526 | *p = c; | |
1527 | ignore_rest_of_line (); | |
1528 | return; | |
1529 | } | |
1530 | input_line_pointer++; | |
b31f2abb KR |
1531 | expression (&exp); |
1532 | if (exp.X_op != O_constant | |
1533 | && exp.X_op != O_register) | |
1534 | { | |
1535 | as_bad ("bad expression"); | |
1536 | ignore_rest_of_line (); | |
1537 | return; | |
1538 | } | |
6efd877d KR |
1539 | *p = 0; |
1540 | symbolP = symbol_find_or_make (name); | |
f8701a3f | 1541 | |
c8863a58 KR |
1542 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && |
1543 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
1544 | those fields, and I can't see when they'd ever be tripped. I | |
1545 | don't think I understand why they were here so I may have | |
1546 | introduced a bug. As recently as 1.37 didn't have this test | |
1547 | anyway. xoxorich. */ | |
f8701a3f | 1548 | |
9471a360 | 1549 | if (S_GET_SEGMENT (symbolP) == undefined_section |
6efd877d KR |
1550 | && S_GET_VALUE (symbolP) == 0) |
1551 | { | |
c8863a58 KR |
1552 | /* The name might be an undefined .global symbol; be sure to |
1553 | keep the "external" bit. */ | |
b31f2abb KR |
1554 | S_SET_SEGMENT (symbolP, |
1555 | (exp.X_op == O_constant | |
1556 | ? absolute_section | |
1557 | : reg_section)); | |
1558 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
6efd877d KR |
1559 | } |
1560 | else | |
1561 | { | |
1562 | as_bad ("Symbol %s already defined", name); | |
1563 | } | |
1564 | *p = c; | |
1565 | demand_empty_rest_of_line (); | |
1566 | } /* s_lsym() */ | |
1567 | ||
e28c40d7 ILT |
1568 | /* Handle changing the location counter. */ |
1569 | ||
1570 | static void | |
1571 | do_org (segment, exp, fill) | |
1572 | segT segment; | |
1573 | expressionS *exp; | |
1574 | int fill; | |
1575 | { | |
1576 | if (segment != now_seg && segment != absolute_section) | |
1577 | as_bad ("invalid segment \"%s\"; segment \"%s\" assumed", | |
1578 | segment_name (segment), segment_name (now_seg)); | |
1579 | ||
1580 | if (now_seg == absolute_section) | |
1581 | { | |
1582 | if (fill != 0) | |
1583 | as_warn ("ignoring fill value in absolute section"); | |
1584 | if (exp->X_op != O_constant) | |
1585 | { | |
1586 | as_bad ("only constant offsets supported in absolute section"); | |
1587 | exp->X_add_number = 0; | |
1588 | } | |
1589 | abs_section_offset = exp->X_add_number; | |
1590 | } | |
1591 | else | |
1592 | { | |
1593 | char *p; | |
1594 | ||
1595 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp->X_add_symbol, | |
1596 | exp->X_add_number, (char *) NULL); | |
1597 | *p = fill; | |
1598 | } | |
1599 | } | |
1600 | ||
6efd877d | 1601 | void |
604633ae ILT |
1602 | s_org (ignore) |
1603 | int ignore; | |
6efd877d KR |
1604 | { |
1605 | register segT segment; | |
1606 | expressionS exp; | |
1607 | register long temp_fill; | |
e28c40d7 | 1608 | |
69e077f3 ILT |
1609 | /* The MRI assembler has a different meaning for .org. It means to |
1610 | create an absolute section at a given address. We can't support | |
1611 | that--use a linker script instead. */ | |
1612 | if (flag_mri) | |
1613 | { | |
1614 | as_bad ("MRI style ORG pseudo-op not supported"); | |
1615 | ignore_rest_of_line (); | |
1616 | return; | |
1617 | } | |
1618 | ||
9471a360 KR |
1619 | /* Don't believe the documentation of BSD 4.2 AS. There is no such |
1620 | thing as a sub-segment-relative origin. Any absolute origin is | |
1621 | given a warning, then assumed to be segment-relative. Any | |
1622 | segmented origin expression ("foo+42") had better be in the right | |
1623 | segment or the .org is ignored. | |
1624 | ||
1625 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
1626 | we never know sub-segment sizes when we are reading code. BSD | |
1627 | will crash trying to emit negative numbers of filler bytes in | |
1628 | certain .orgs. We don't crash, but see as-write for that code. | |
1629 | ||
1630 | Don't make frag if need_pass_2==1. */ | |
6efd877d KR |
1631 | segment = get_known_segmented_expression (&exp); |
1632 | if (*input_line_pointer == ',') | |
1633 | { | |
1634 | input_line_pointer++; | |
1635 | temp_fill = get_absolute_expression (); | |
1636 | } | |
1637 | else | |
1638 | temp_fill = 0; | |
e28c40d7 | 1639 | |
6efd877d | 1640 | if (!need_pass_2) |
e28c40d7 ILT |
1641 | do_org (segment, &exp, temp_fill); |
1642 | ||
6efd877d KR |
1643 | demand_empty_rest_of_line (); |
1644 | } /* s_org() */ | |
1645 | ||
1646 | void | |
604633ae ILT |
1647 | s_set (ignore) |
1648 | int ignore; | |
6efd877d KR |
1649 | { |
1650 | register char *name; | |
1651 | register char delim; | |
1652 | register char *end_name; | |
1653 | register symbolS *symbolP; | |
1654 | ||
1655 | /* | |
c8863a58 KR |
1656 | * Especial apologies for the random logic: |
1657 | * this just grew, and could be parsed much more simply! | |
1658 | * Dean in haste. | |
1659 | */ | |
6efd877d KR |
1660 | name = input_line_pointer; |
1661 | delim = get_symbol_end (); | |
1662 | end_name = input_line_pointer; | |
1663 | *end_name = delim; | |
1664 | SKIP_WHITESPACE (); | |
f8701a3f | 1665 | |
6efd877d KR |
1666 | if (*input_line_pointer != ',') |
1667 | { | |
1668 | *end_name = 0; | |
1669 | as_bad ("Expected comma after name \"%s\"", name); | |
1670 | *end_name = delim; | |
1671 | ignore_rest_of_line (); | |
1672 | return; | |
1673 | } | |
1674 | ||
1675 | input_line_pointer++; | |
1676 | *end_name = 0; | |
1677 | ||
1678 | if (name[0] == '.' && name[1] == '\0') | |
1679 | { | |
1680 | /* Turn '. = mumble' into a .org mumble */ | |
1681 | register segT segment; | |
1682 | expressionS exp; | |
1683 | register char *ptr; | |
1684 | ||
1685 | segment = get_known_segmented_expression (&exp); | |
f8701a3f | 1686 | |
6efd877d | 1687 | if (!need_pass_2) |
e28c40d7 | 1688 | do_org (segment, &exp, 0); |
6efd877d KR |
1689 | |
1690 | *end_name = delim; | |
1691 | return; | |
1692 | } | |
1693 | ||
1694 | if ((symbolP = symbol_find (name)) == NULL | |
1695 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
1696 | { | |
9471a360 | 1697 | symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag); |
fecd2382 | 1698 | #ifdef OBJ_COFF |
6efd877d KR |
1699 | /* "set" symbols are local unless otherwise specified. */ |
1700 | SF_SET_LOCAL (symbolP); | |
fecd2382 | 1701 | #endif /* OBJ_COFF */ |
f8701a3f | 1702 | |
6efd877d | 1703 | } /* make a new symbol */ |
f8701a3f | 1704 | |
6efd877d | 1705 | symbol_table_insert (symbolP); |
f8701a3f | 1706 | |
6efd877d KR |
1707 | *end_name = delim; |
1708 | pseudo_set (symbolP); | |
1709 | demand_empty_rest_of_line (); | |
1710 | } /* s_set() */ | |
fecd2382 | 1711 | |
6efd877d KR |
1712 | void |
1713 | s_space (mult) | |
1714 | int mult; | |
b53ccaac | 1715 | { |
cd3b81bd | 1716 | expressionS exp; |
931a8fab | 1717 | long temp_fill; |
cd3b81bd | 1718 | char *p = 0; |
6efd877d | 1719 | |
a2a5a4fa KR |
1720 | #ifdef md_flush_pending_output |
1721 | md_flush_pending_output (); | |
1722 | #endif | |
1723 | ||
6efd877d | 1724 | /* Just like .fill, but temp_size = 1 */ |
cd3b81bd | 1725 | expression (&exp); |
931a8fab | 1726 | if (exp.X_op == O_constant) |
6efd877d | 1727 | { |
cd3b81bd KR |
1728 | long repeat; |
1729 | ||
1730 | repeat = exp.X_add_number; | |
1731 | if (mult) | |
1732 | repeat *= mult; | |
1733 | if (repeat <= 0) | |
1734 | { | |
1735 | as_warn (".space repeat count is %s, ignored", | |
1736 | repeat ? "negative" : "zero"); | |
1737 | ignore_rest_of_line (); | |
1738 | return; | |
1739 | } | |
1740 | ||
e28c40d7 ILT |
1741 | /* If we are in the absolute section, just bump the offset. */ |
1742 | if (now_seg == absolute_section) | |
1743 | { | |
1744 | abs_section_offset += repeat; | |
1745 | demand_empty_rest_of_line (); | |
1746 | return; | |
1747 | } | |
1748 | ||
1356d77d ILT |
1749 | /* If we are secretly in an MRI common section, then creating |
1750 | space just increases the size of the common symbol. */ | |
1751 | if (mri_common_symbol != NULL) | |
1752 | { | |
1753 | S_SET_VALUE (mri_common_symbol, | |
1754 | S_GET_VALUE (mri_common_symbol) + repeat); | |
1755 | demand_empty_rest_of_line (); | |
1756 | return; | |
1757 | } | |
1758 | ||
cd3b81bd KR |
1759 | if (!need_pass_2) |
1760 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
931a8fab | 1761 | repeat, (char *) 0); |
6efd877d KR |
1762 | } |
1763 | else | |
1764 | { | |
e28c40d7 ILT |
1765 | if (now_seg == absolute_section) |
1766 | { | |
1767 | as_bad ("space allocation too complex in absolute section"); | |
1768 | subseg_set (text_section, 0); | |
1769 | } | |
1356d77d ILT |
1770 | if (mri_common_symbol != NULL) |
1771 | { | |
1772 | as_bad ("space allocation too complex in common section"); | |
1773 | mri_common_symbol = NULL; | |
1774 | } | |
cd3b81bd KR |
1775 | if (!need_pass_2) |
1776 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
1777 | make_expr_symbol (&exp), 0L, (char *) 0); | |
6efd877d | 1778 | } |
931a8fab KR |
1779 | SKIP_WHITESPACE (); |
1780 | if (*input_line_pointer == ',') | |
6efd877d | 1781 | { |
931a8fab | 1782 | input_line_pointer++; |
cd3b81bd | 1783 | temp_fill = get_absolute_expression (); |
6efd877d | 1784 | } |
cd3b81bd | 1785 | else |
6efd877d | 1786 | { |
cd3b81bd | 1787 | temp_fill = 0; |
6efd877d | 1788 | } |
cd3b81bd | 1789 | if (p) |
6efd877d | 1790 | { |
6efd877d KR |
1791 | *p = temp_fill; |
1792 | } | |
1793 | demand_empty_rest_of_line (); | |
cd3b81bd | 1794 | } |
fecd2382 | 1795 | |
e28c40d7 ILT |
1796 | /* This is like s_space, but the value is a floating point number with |
1797 | the given precision. This is for the MRI dcb.s pseudo-op and | |
1798 | friends. */ | |
1799 | ||
1800 | void | |
1801 | s_float_space (float_type) | |
1802 | int float_type; | |
1803 | { | |
1804 | offsetT count; | |
1805 | int flen; | |
1806 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
1807 | ||
1808 | count = get_absolute_expression (); | |
1809 | ||
1810 | SKIP_WHITESPACE (); | |
1811 | if (*input_line_pointer != ',') | |
1812 | { | |
1813 | as_bad ("missing value"); | |
1814 | ignore_rest_of_line (); | |
1815 | return; | |
1816 | } | |
1817 | ||
1818 | ++input_line_pointer; | |
1819 | ||
1820 | SKIP_WHITESPACE (); | |
1821 | ||
1822 | /* Skip any 0{letter} that may be present. Don't even check if the | |
1823 | * letter is legal. */ | |
1824 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) | |
1825 | input_line_pointer += 2; | |
1826 | ||
1827 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
1828 | with the exact digits specified. */ | |
1829 | if (input_line_pointer[0] == ':') | |
1830 | { | |
1831 | flen = hex_float (float_type, temp); | |
1832 | if (flen < 0) | |
1833 | { | |
1834 | ignore_rest_of_line (); | |
1835 | return; | |
1836 | } | |
1837 | } | |
1838 | else | |
1839 | { | |
1840 | char *err; | |
1841 | ||
1842 | err = md_atof (float_type, temp, &flen); | |
1843 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
1844 | know (flen > 0); | |
1845 | if (err) | |
1846 | { | |
1847 | as_bad ("Bad floating literal: %s", err); | |
1848 | ignore_rest_of_line (); | |
1849 | return; | |
1850 | } | |
1851 | } | |
1852 | ||
1853 | while (--count >= 0) | |
1854 | { | |
1855 | char *p; | |
1856 | ||
1857 | p = frag_more (flen); | |
1858 | memcpy (p, temp, (unsigned int) flen); | |
1859 | } | |
1860 | ||
1861 | demand_empty_rest_of_line (); | |
1862 | } | |
1863 | ||
1864 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
1865 | ||
1866 | void | |
1867 | s_struct (ignore) | |
1868 | int ignore; | |
1869 | { | |
1870 | abs_section_offset = get_absolute_expression (); | |
1871 | subseg_set (absolute_section, 0); | |
1872 | demand_empty_rest_of_line (); | |
1873 | } | |
1874 | ||
fecd2382 | 1875 | void |
604633ae ILT |
1876 | s_text (ignore) |
1877 | int ignore; | |
fecd2382 | 1878 | { |
6efd877d | 1879 | register int temp; |
f8701a3f | 1880 | |
6efd877d | 1881 | temp = get_absolute_expression (); |
9471a360 | 1882 | subseg_set (text_section, (subsegT) temp); |
6efd877d | 1883 | demand_empty_rest_of_line (); |
80d80c64 KR |
1884 | #ifdef OBJ_VMS |
1885 | const_flag &= ~IN_DEFAULT_SECTION; | |
1886 | #endif | |
6efd877d | 1887 | } /* s_text() */ |
fecd2382 | 1888 | \f |
6efd877d | 1889 | |
6efd877d KR |
1890 | void |
1891 | demand_empty_rest_of_line () | |
1892 | { | |
1893 | SKIP_WHITESPACE (); | |
58d4951d | 1894 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
1895 | { |
1896 | input_line_pointer++; | |
1897 | } | |
1898 | else | |
1899 | { | |
1900 | ignore_rest_of_line (); | |
1901 | } | |
1902 | /* Return having already swallowed end-of-line. */ | |
1903 | } /* Return pointing just after end-of-line. */ | |
fecd2382 RP |
1904 | |
1905 | void | |
6efd877d | 1906 | ignore_rest_of_line () /* For suspect lines: gives warning. */ |
fecd2382 | 1907 | { |
58d4951d | 1908 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 1909 | { |
6efd877d KR |
1910 | if (isprint (*input_line_pointer)) |
1911 | as_bad ("Rest of line ignored. First ignored character is `%c'.", | |
f8701a3f SC |
1912 | *input_line_pointer); |
1913 | else | |
6efd877d | 1914 | as_bad ("Rest of line ignored. First ignored character valued 0x%x.", |
f8701a3f SC |
1915 | *input_line_pointer); |
1916 | while (input_line_pointer < buffer_limit | |
58d4951d | 1917 | && !is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 1918 | { |
6efd877d | 1919 | input_line_pointer++; |
f8701a3f SC |
1920 | } |
1921 | } | |
6efd877d | 1922 | input_line_pointer++; /* Return pointing just after end-of-line. */ |
58d4951d | 1923 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
fecd2382 RP |
1924 | } |
1925 | ||
1926 | /* | |
1927 | * pseudo_set() | |
1928 | * | |
1929 | * In: Pointer to a symbol. | |
1930 | * Input_line_pointer->expression. | |
1931 | * | |
1932 | * Out: Input_line_pointer->just after any whitespace after expression. | |
1933 | * Tried to set symbol to value of expression. | |
1934 | * Will change symbols type, value, and frag; | |
fecd2382 RP |
1935 | */ |
1936 | void | |
f8701a3f | 1937 | pseudo_set (symbolP) |
6efd877d | 1938 | symbolS *symbolP; |
fecd2382 | 1939 | { |
6efd877d | 1940 | expressionS exp; |
daad3bbf | 1941 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
f8701a3f | 1942 | int ext; |
fecd2382 | 1943 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 1944 | |
6efd877d | 1945 | know (symbolP); /* NULL pointer is logic error. */ |
daad3bbf | 1946 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
6efd877d | 1947 | ext = S_IS_EXTERNAL (symbolP); |
fecd2382 | 1948 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 1949 | |
5ac34ac3 | 1950 | (void) expression (&exp); |
f8701a3f | 1951 | |
5ac34ac3 ILT |
1952 | if (exp.X_op == O_illegal) |
1953 | as_bad ("illegal expression; zero assumed"); | |
1954 | else if (exp.X_op == O_absent) | |
1955 | as_bad ("missing expression; zero assumed"); | |
1956 | else if (exp.X_op == O_big) | |
1957 | as_bad ("%s number invalid; zero assumed", | |
1958 | exp.X_add_number > 0 ? "bignum" : "floating point"); | |
1959 | else if (exp.X_op == O_subtract | |
1960 | && (S_GET_SEGMENT (exp.X_add_symbol) | |
1961 | == S_GET_SEGMENT (exp.X_op_symbol)) | |
1962 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) | |
1963 | && exp.X_add_symbol->sy_frag == exp.X_op_symbol->sy_frag) | |
9471a360 | 1964 | { |
5ac34ac3 ILT |
1965 | exp.X_op = O_constant; |
1966 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
1967 | - S_GET_VALUE (exp.X_op_symbol)); | |
9471a360 | 1968 | } |
5ac34ac3 ILT |
1969 | |
1970 | switch (exp.X_op) | |
9471a360 | 1971 | { |
5ac34ac3 ILT |
1972 | case O_illegal: |
1973 | case O_absent: | |
1974 | case O_big: | |
1975 | exp.X_add_number = 0; | |
1976 | /* Fall through. */ | |
1977 | case O_constant: | |
9471a360 | 1978 | S_SET_SEGMENT (symbolP, absolute_section); |
daad3bbf | 1979 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
1980 | if (ext) |
1981 | S_SET_EXTERNAL (symbolP); | |
6efd877d | 1982 | else |
6efd877d | 1983 | S_CLEAR_EXTERNAL (symbolP); |
fecd2382 | 1984 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
604633ae | 1985 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
6efd877d | 1986 | symbolP->sy_frag = &zero_address_frag; |
5ac34ac3 | 1987 | break; |
f8701a3f | 1988 | |
5ac34ac3 ILT |
1989 | case O_register: |
1990 | S_SET_SEGMENT (symbolP, reg_section); | |
604633ae | 1991 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
5ac34ac3 ILT |
1992 | symbolP->sy_frag = &zero_address_frag; |
1993 | break; | |
1994 | ||
1995 | case O_symbol: | |
ef198870 KR |
1996 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section |
1997 | || exp.X_add_number != 0) | |
5ac34ac3 | 1998 | symbolP->sy_value = exp; |
6efd877d KR |
1999 | else |
2000 | { | |
80d80c64 KR |
2001 | symbolS *s = exp.X_add_symbol; |
2002 | ||
2003 | S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s)); | |
daad3bbf | 2004 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
2005 | if (ext) |
2006 | S_SET_EXTERNAL (symbolP); | |
2007 | else | |
2008 | S_CLEAR_EXTERNAL (symbolP); | |
fecd2382 | 2009 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
5ac34ac3 | 2010 | S_SET_VALUE (symbolP, |
80d80c64 KR |
2011 | exp.X_add_number + S_GET_VALUE (s)); |
2012 | symbolP->sy_frag = s->sy_frag; | |
ef198870 | 2013 | copy_symbol_attributes (symbolP, s); |
5ac34ac3 ILT |
2014 | } |
2015 | break; | |
f8701a3f | 2016 | |
5ac34ac3 ILT |
2017 | default: |
2018 | /* The value is some complex expression. | |
2019 | FIXME: Should we set the segment to anything? */ | |
2020 | symbolP->sy_value = exp; | |
2021 | break; | |
f8701a3f | 2022 | } |
fecd2382 RP |
2023 | } |
2024 | \f | |
2025 | /* | |
2026 | * cons() | |
2027 | * | |
2028 | * CONStruct more frag of .bytes, or .words etc. | |
2029 | * Should need_pass_2 be 1 then emit no frag(s). | |
80aab579 | 2030 | * This understands EXPRESSIONS. |
fecd2382 RP |
2031 | * |
2032 | * Bug (?) | |
2033 | * | |
2034 | * This has a split personality. We use expression() to read the | |
2035 | * value. We can detect if the value won't fit in a byte or word. | |
2036 | * But we can't detect if expression() discarded significant digits | |
2037 | * in the case of a long. Not worth the crocks required to fix it. | |
2038 | */ | |
2039 | ||
40324362 KR |
2040 | /* Select a parser for cons expressions. */ |
2041 | ||
2042 | /* Some targets need to parse the expression in various fancy ways. | |
2043 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
2044 | (for example, the HPPA does this). Otherwise, you can define | |
2045 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
2046 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
2047 | are defined, which is the normal case, then only simple expressions | |
2048 | are permitted. */ | |
2049 | ||
1356d77d ILT |
2050 | static void |
2051 | parse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2052 | ||
40324362 KR |
2053 | #ifndef TC_PARSE_CONS_EXPRESSION |
2054 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
2055 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
2056 | static void | |
2057 | parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2058 | #endif | |
40324362 KR |
2059 | #ifdef REPEAT_CONS_EXPRESSIONS |
2060 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
2061 | static void | |
2062 | parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2063 | #endif | |
2064 | ||
2065 | /* If we haven't gotten one yet, just call expression. */ | |
2066 | #ifndef TC_PARSE_CONS_EXPRESSION | |
2067 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
2068 | #endif | |
2069 | #endif | |
2070 | ||
6efd877d KR |
2071 | /* worker to do .byte etc statements */ |
2072 | /* clobbers input_line_pointer, checks */ | |
2073 | /* end-of-line. */ | |
2074 | void | |
2075 | cons (nbytes) | |
604633ae | 2076 | register int nbytes; /* 1=.byte, 2=.word, 4=.long */ |
fecd2382 | 2077 | { |
286cb27a | 2078 | int c; |
6efd877d | 2079 | expressionS exp; |
f8701a3f | 2080 | |
a2a5a4fa KR |
2081 | #ifdef md_flush_pending_output |
2082 | md_flush_pending_output (); | |
2083 | #endif | |
2084 | ||
40324362 | 2085 | if (is_it_end_of_statement ()) |
6efd877d | 2086 | { |
40324362 KR |
2087 | demand_empty_rest_of_line (); |
2088 | return; | |
6efd877d | 2089 | } |
40324362 | 2090 | |
286cb27a | 2091 | c = 0; |
40324362 | 2092 | do |
6efd877d | 2093 | { |
1356d77d ILT |
2094 | if (flag_mri) |
2095 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
2096 | else | |
2097 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); | |
604633ae | 2098 | emit_expr (&exp, (unsigned int) nbytes); |
286cb27a | 2099 | ++c; |
40324362 KR |
2100 | } |
2101 | while (*input_line_pointer++ == ','); | |
2102 | ||
286cb27a ILT |
2103 | /* In MRI mode, after an odd number of bytes, we must align to an |
2104 | even word boundary, unless the next instruction is a dc.b, ds.b | |
2105 | or dcb.b. */ | |
2106 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
2107 | mri_pending_align = 1; | |
2108 | ||
40324362 KR |
2109 | input_line_pointer--; /* Put terminator back into stream. */ |
2110 | demand_empty_rest_of_line (); | |
30d3a445 | 2111 | } |
f8701a3f | 2112 | |
40324362 KR |
2113 | /* Put the contents of expression EXP into the object file using |
2114 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
f8701a3f | 2115 | |
40324362 KR |
2116 | void |
2117 | emit_expr (exp, nbytes) | |
2118 | expressionS *exp; | |
2119 | unsigned int nbytes; | |
2120 | { | |
5ac34ac3 | 2121 | operatorT op; |
40324362 | 2122 | register char *p; |
80aab579 | 2123 | valueT extra_digit = 0; |
f8701a3f | 2124 | |
40324362 KR |
2125 | /* Don't do anything if we are going to make another pass. */ |
2126 | if (need_pass_2) | |
2127 | return; | |
2128 | ||
5ac34ac3 | 2129 | op = exp->X_op; |
40324362 | 2130 | |
e28c40d7 ILT |
2131 | /* Allow `.word 0' in the absolute section. */ |
2132 | if (now_seg == absolute_section) | |
2133 | { | |
2134 | if (op != O_constant || exp->X_add_number != 0) | |
2135 | as_bad ("attempt to store value in absolute section"); | |
2136 | abs_section_offset += nbytes; | |
2137 | return; | |
2138 | } | |
2139 | ||
80aab579 ILT |
2140 | /* Handle a negative bignum. */ |
2141 | if (op == O_uminus | |
2142 | && exp->X_add_number == 0 | |
2143 | && exp->X_add_symbol->sy_value.X_op == O_big | |
2144 | && exp->X_add_symbol->sy_value.X_add_number > 0) | |
2145 | { | |
2146 | int i; | |
2147 | unsigned long carry; | |
2148 | ||
2149 | exp = &exp->X_add_symbol->sy_value; | |
2150 | ||
2151 | /* Negate the bignum: one's complement each digit and add 1. */ | |
2152 | carry = 1; | |
2153 | for (i = 0; i < exp->X_add_number; i++) | |
2154 | { | |
2155 | unsigned long next; | |
2156 | ||
2157 | next = (((~ (generic_bignum[i] & LITTLENUM_MASK)) | |
2158 | & LITTLENUM_MASK) | |
2159 | + carry); | |
2160 | generic_bignum[i] = next & LITTLENUM_MASK; | |
2161 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
2162 | } | |
2163 | ||
2164 | /* We can ignore any carry out, because it will be handled by | |
2165 | extra_digit if it is needed. */ | |
2166 | ||
2167 | extra_digit = (valueT) -1; | |
2168 | op = O_big; | |
2169 | } | |
2170 | ||
5ac34ac3 | 2171 | if (op == O_absent || op == O_illegal) |
6efd877d | 2172 | { |
5ac34ac3 ILT |
2173 | as_warn ("zero assumed for missing expression"); |
2174 | exp->X_add_number = 0; | |
2175 | op = O_constant; | |
6efd877d | 2176 | } |
80aab579 | 2177 | else if (op == O_big && exp->X_add_number <= 0) |
6efd877d | 2178 | { |
80aab579 | 2179 | as_bad ("floating point number invalid; zero assumed"); |
40324362 | 2180 | exp->X_add_number = 0; |
5ac34ac3 | 2181 | op = O_constant; |
40324362 | 2182 | } |
5ac34ac3 | 2183 | else if (op == O_register) |
6efd877d | 2184 | { |
5ac34ac3 ILT |
2185 | as_warn ("register value used as expression"); |
2186 | op = O_constant; | |
40324362 | 2187 | } |
6efd877d | 2188 | |
604633ae | 2189 | p = frag_more ((int) nbytes); |
6efd877d | 2190 | |
40324362 KR |
2191 | #ifndef WORKING_DOT_WORD |
2192 | /* If we have the difference of two symbols in a word, save it on | |
2193 | the broken_words list. See the code in write.c. */ | |
5ac34ac3 | 2194 | if (op == O_subtract && nbytes == 2) |
40324362 KR |
2195 | { |
2196 | struct broken_word *x; | |
2197 | ||
2198 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
2199 | x->next_broken_word = broken_words; | |
2200 | broken_words = x; | |
2201 | x->frag = frag_now; | |
2202 | x->word_goes_here = p; | |
2203 | x->dispfrag = 0; | |
2204 | x->add = exp->X_add_symbol; | |
5ac34ac3 | 2205 | x->sub = exp->X_op_symbol; |
40324362 KR |
2206 | x->addnum = exp->X_add_number; |
2207 | x->added = 0; | |
2208 | new_broken_words++; | |
2209 | return; | |
2210 | } | |
f8701a3f | 2211 | #endif |
6efd877d | 2212 | |
80aab579 ILT |
2213 | /* If we have an integer, but the number of bytes is too large to |
2214 | pass to md_number_to_chars, handle it as a bignum. */ | |
2215 | if (op == O_constant && nbytes > sizeof (valueT)) | |
2216 | { | |
2217 | valueT val; | |
2218 | int gencnt; | |
2219 | ||
2220 | if (! exp->X_unsigned && exp->X_add_number < 0) | |
2221 | extra_digit = (valueT) -1; | |
2222 | val = (valueT) exp->X_add_number; | |
2223 | gencnt = 0; | |
2224 | do | |
2225 | { | |
2226 | generic_bignum[gencnt] = val & LITTLENUM_MASK; | |
2227 | val >>= LITTLENUM_NUMBER_OF_BITS; | |
2228 | ++gencnt; | |
2229 | } | |
2230 | while (val != 0); | |
2231 | op = exp->X_op = O_big; | |
2232 | exp->X_add_number = gencnt; | |
2233 | } | |
2234 | ||
5ac34ac3 | 2235 | if (op == O_constant) |
40324362 | 2236 | { |
44ce2f32 DE |
2237 | register valueT get; |
2238 | register valueT use; | |
2239 | register valueT mask; | |
2240 | register valueT unmask; | |
40324362 KR |
2241 | |
2242 | /* JF << of >= number of bits in the object is undefined. In | |
2243 | particular SPARC (Sun 4) has problems */ | |
44ce2f32 | 2244 | if (nbytes >= sizeof (valueT)) |
40324362 KR |
2245 | mask = 0; |
2246 | else | |
d2550c72 | 2247 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); /* Don't store these bits. */ |
6efd877d | 2248 | |
40324362 | 2249 | unmask = ~mask; /* Do store these bits. */ |
6efd877d | 2250 | |
40324362 KR |
2251 | #ifdef NEVER |
2252 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
2253 | mask = ~(unmask >> 1); /* Includes sign bit now. */ | |
2254 | #endif | |
6efd877d | 2255 | |
40324362 KR |
2256 | get = exp->X_add_number; |
2257 | use = get & unmask; | |
2258 | if ((get & mask) != 0 && (get & mask) != mask) | |
2259 | { /* Leading bits contain both 0s & 1s. */ | |
58d4951d | 2260 | as_warn ("Value 0x%lx truncated to 0x%lx.", get, use); |
40324362 | 2261 | } |
604633ae | 2262 | /* put bytes in right order. */ |
44ce2f32 | 2263 | md_number_to_chars (p, use, (int) nbytes); |
40324362 | 2264 | } |
80aab579 ILT |
2265 | else if (op == O_big) |
2266 | { | |
2267 | int size; | |
2268 | LITTLENUM_TYPE *nums; | |
2269 | ||
2270 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
2271 | ||
2272 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
2273 | if (nbytes < size) | |
2274 | { | |
2275 | as_warn ("Bignum truncated to %d bytes", nbytes); | |
2276 | size = nbytes; | |
2277 | } | |
2278 | ||
2279 | if (target_big_endian) | |
2280 | { | |
2281 | while (nbytes > size) | |
2282 | { | |
2283 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
2284 | nbytes -= CHARS_PER_LITTLENUM; | |
2285 | p += CHARS_PER_LITTLENUM; | |
2286 | } | |
2287 | ||
2288 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
2289 | while (size > 0) | |
2290 | { | |
2291 | --nums; | |
2292 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
2293 | size -= CHARS_PER_LITTLENUM; | |
2294 | p += CHARS_PER_LITTLENUM; | |
2295 | } | |
2296 | } | |
2297 | else | |
2298 | { | |
2299 | nums = generic_bignum; | |
2300 | while (size > 0) | |
2301 | { | |
2302 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
2303 | ++nums; | |
2304 | size -= CHARS_PER_LITTLENUM; | |
2305 | p += CHARS_PER_LITTLENUM; | |
2306 | nbytes -= CHARS_PER_LITTLENUM; | |
2307 | } | |
2308 | ||
2309 | while (nbytes > 0) | |
2310 | { | |
2311 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
2312 | nbytes -= CHARS_PER_LITTLENUM; | |
2313 | p += CHARS_PER_LITTLENUM; | |
2314 | } | |
2315 | } | |
2316 | } | |
40324362 KR |
2317 | else |
2318 | { | |
1fbfe108 | 2319 | memset (p, 0, nbytes); |
6efd877d | 2320 | |
40324362 KR |
2321 | /* Now we need to generate a fixS to record the symbol value. |
2322 | This is easy for BFD. For other targets it can be more | |
2323 | complex. For very complex cases (currently, the HPPA and | |
2324 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
2325 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
2326 | the name of the reloc code that should be stored in the fixS. | |
2327 | If neither is defined, the code uses NO_RELOC if it is | |
2328 | defined, and otherwise uses 0. */ | |
6efd877d | 2329 | |
40324362 | 2330 | #ifdef BFD_ASSEMBLER |
4064305e SS |
2331 | #ifdef TC_CONS_FIX_NEW |
2332 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
2333 | #else | |
604633ae | 2334 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 2335 | /* @@ Should look at CPU word size. */ |
ba71c54d KR |
2336 | nbytes == 2 ? BFD_RELOC_16 |
2337 | : nbytes == 8 ? BFD_RELOC_64 | |
2338 | : BFD_RELOC_32); | |
4064305e | 2339 | #endif |
40324362 KR |
2340 | #else |
2341 | #ifdef TC_CONS_FIX_NEW | |
2342 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
2343 | #else | |
2344 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
2345 | it is defined, otherwise use NO_RELOC if it is defined, | |
2346 | otherwise use 0. */ | |
2347 | #ifndef TC_CONS_RELOC | |
2348 | #ifdef NO_RELOC | |
2349 | #define TC_CONS_RELOC NO_RELOC | |
2350 | #else | |
2351 | #define TC_CONS_RELOC 0 | |
2352 | #endif | |
2353 | #endif | |
80aab579 | 2354 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 2355 | TC_CONS_RELOC); |
40324362 KR |
2356 | #endif /* TC_CONS_FIX_NEW */ |
2357 | #endif /* BFD_ASSEMBLER */ | |
2358 | } | |
2359 | } | |
2360 | \f | |
2361 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
6efd877d | 2362 | |
40324362 KR |
2363 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as |
2364 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
2365 | then pack them all together. We do a little better in that we allow | |
2366 | them in words, longs, etc. and we'll pack them in target byte order | |
2367 | for you. | |
6efd877d | 2368 | |
40324362 KR |
2369 | The rules are: pack least significat bit first, if a field doesn't |
2370 | entirely fit, put it in the next unit. Overflowing the bitfield is | |
2371 | explicitly *not* even a warning. The bitwidth should be considered | |
2372 | a "mask". | |
6efd877d | 2373 | |
40324362 KR |
2374 | To use this function the tc-XXX.h file should define |
2375 | BITFIELD_CONS_EXPRESSIONS. */ | |
f8701a3f | 2376 | |
40324362 KR |
2377 | static void |
2378 | parse_bitfield_cons (exp, nbytes) | |
2379 | expressionS *exp; | |
2380 | unsigned int nbytes; | |
2381 | { | |
2382 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
2383 | char *hold = input_line_pointer; | |
f8701a3f | 2384 | |
5ac34ac3 | 2385 | (void) expression (exp); |
f8701a3f | 2386 | |
40324362 KR |
2387 | if (*input_line_pointer == ':') |
2388 | { /* bitfields */ | |
2389 | long value = 0; | |
f8701a3f | 2390 | |
40324362 KR |
2391 | for (;;) |
2392 | { | |
2393 | unsigned long width; | |
f8701a3f | 2394 | |
40324362 KR |
2395 | if (*input_line_pointer != ':') |
2396 | { | |
2397 | input_line_pointer = hold; | |
2398 | break; | |
2399 | } /* next piece is not a bitfield */ | |
2400 | ||
2401 | /* In the general case, we can't allow | |
2402 | full expressions with symbol | |
2403 | differences and such. The relocation | |
2404 | entries for symbols not defined in this | |
2405 | assembly would require arbitrary field | |
2406 | widths, positions, and masks which most | |
2407 | of our current object formats don't | |
2408 | support. | |
cd3b81bd | 2409 | |
40324362 KR |
2410 | In the specific case where a symbol |
2411 | *is* defined in this assembly, we | |
2412 | *could* build fixups and track it, but | |
2413 | this could lead to confusion for the | |
2414 | backends. I'm lazy. I'll take any | |
2415 | SEG_ABSOLUTE. I think that means that | |
2416 | you can use a previous .set or | |
2417 | .equ type symbol. xoxorich. */ | |
2418 | ||
5ac34ac3 | 2419 | if (exp->X_op == O_absent) |
6efd877d | 2420 | { |
5ac34ac3 | 2421 | as_warn ("using a bit field width of zero"); |
40324362 | 2422 | exp->X_add_number = 0; |
5ac34ac3 | 2423 | exp->X_op = O_constant; |
40324362 KR |
2424 | } /* implied zero width bitfield */ |
2425 | ||
5ac34ac3 | 2426 | if (exp->X_op != O_constant) |
6efd877d | 2427 | { |
40324362 | 2428 | *input_line_pointer = '\0'; |
5ac34ac3 | 2429 | as_bad ("field width \"%s\" too complex for a bitfield", hold); |
40324362 KR |
2430 | *input_line_pointer = ':'; |
2431 | demand_empty_rest_of_line (); | |
2432 | return; | |
2433 | } /* too complex */ | |
2434 | ||
2435 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
9471a360 | 2436 | { |
80aab579 | 2437 | as_warn ("field width %lu too big to fit in %d bytes: truncated to %d bits", |
40324362 KR |
2438 | width, nbytes, (BITS_PER_CHAR * nbytes)); |
2439 | width = BITS_PER_CHAR * nbytes; | |
2440 | } /* too big */ | |
2441 | ||
2442 | if (width > bits_available) | |
9471a360 | 2443 | { |
40324362 KR |
2444 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ |
2445 | input_line_pointer = hold; | |
2446 | exp->X_add_number = value; | |
2447 | break; | |
2448 | } /* won't fit */ | |
2449 | ||
2450 | hold = ++input_line_pointer; /* skip ':' */ | |
2451 | ||
5ac34ac3 ILT |
2452 | (void) expression (exp); |
2453 | if (exp->X_op != O_constant) | |
9471a360 | 2454 | { |
40324362 KR |
2455 | char cache = *input_line_pointer; |
2456 | ||
2457 | *input_line_pointer = '\0'; | |
5ac34ac3 | 2458 | as_bad ("field value \"%s\" too complex for a bitfield", hold); |
40324362 KR |
2459 | *input_line_pointer = cache; |
2460 | demand_empty_rest_of_line (); | |
2461 | return; | |
2462 | } /* too complex */ | |
2463 | ||
5ac34ac3 ILT |
2464 | value |= ((~(-1 << width) & exp->X_add_number) |
2465 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
40324362 KR |
2466 | |
2467 | if ((bits_available -= width) == 0 | |
2468 | || is_it_end_of_statement () | |
2469 | || *input_line_pointer != ',') | |
2470 | { | |
2471 | break; | |
2472 | } /* all the bitfields we're gonna get */ | |
2473 | ||
2474 | hold = ++input_line_pointer; | |
5ac34ac3 | 2475 | (void) expression (exp); |
40324362 KR |
2476 | } /* forever loop */ |
2477 | ||
2478 | exp->X_add_number = value; | |
5ac34ac3 | 2479 | exp->X_op = O_constant; |
80aab579 | 2480 | exp->X_unsigned = 1; |
40324362 KR |
2481 | } /* if looks like a bitfield */ |
2482 | } /* parse_bitfield_cons() */ | |
2483 | ||
2484 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
2485 | \f | |
1356d77d | 2486 | /* Handle an MRI style string expression. */ |
40324362 KR |
2487 | |
2488 | static void | |
2489 | parse_mri_cons (exp, nbytes) | |
2490 | expressionS *exp; | |
2491 | unsigned int nbytes; | |
2492 | { | |
1356d77d ILT |
2493 | if (*input_line_pointer != '\'' |
2494 | && (input_line_pointer[1] != '\'' | |
2495 | || (*input_line_pointer != 'A' | |
2496 | && *input_line_pointer != 'E'))) | |
2497 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
2498 | else | |
40324362 | 2499 | { |
40324362 KR |
2500 | int scan = 0; |
2501 | unsigned int result = 0; | |
1356d77d ILT |
2502 | |
2503 | /* An MRI style string. Cut into as many bytes as will fit into | |
2504 | a nbyte chunk, left justify if necessary, and separate with | |
2505 | commas so we can try again later. */ | |
2506 | if (*input_line_pointer == 'A') | |
2507 | ++input_line_pointer; | |
2508 | else if (*input_line_pointer == 'E') | |
2509 | { | |
2510 | as_bad ("EBCDIC constants are not supported"); | |
2511 | ++input_line_pointer; | |
2512 | } | |
2513 | ||
40324362 KR |
2514 | input_line_pointer++; |
2515 | for (scan = 0; scan < nbytes; scan++) | |
2516 | { | |
2517 | if (*input_line_pointer == '\'') | |
2518 | { | |
2519 | if (input_line_pointer[1] == '\'') | |
6efd877d | 2520 | { |
40324362 | 2521 | input_line_pointer++; |
f8701a3f | 2522 | } |
40324362 KR |
2523 | else |
2524 | break; | |
9471a360 | 2525 | } |
40324362 KR |
2526 | result = (result << 8) | (*input_line_pointer++); |
2527 | } | |
f8701a3f | 2528 | |
40324362 KR |
2529 | /* Left justify */ |
2530 | while (scan < nbytes) | |
2531 | { | |
2532 | result <<= 8; | |
2533 | scan++; | |
2534 | } | |
2535 | /* Create correct expression */ | |
5ac34ac3 | 2536 | exp->X_op = O_constant; |
40324362 | 2537 | exp->X_add_number = result; |
40324362 KR |
2538 | /* Fake it so that we can read the next char too */ |
2539 | if (input_line_pointer[0] != '\'' || | |
2540 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
2541 | { | |
2542 | input_line_pointer -= 2; | |
2543 | input_line_pointer[0] = ','; | |
2544 | input_line_pointer[1] = '\''; | |
2545 | } | |
2546 | else | |
2547 | input_line_pointer++; | |
2548 | } | |
40324362 | 2549 | } |
40324362 KR |
2550 | \f |
2551 | #ifdef REPEAT_CONS_EXPRESSIONS | |
2552 | ||
2553 | /* Parse a repeat expression for cons. This is used by the MIPS | |
2554 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
2555 | object file COUNT times. | |
2556 | ||
2557 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
2558 | ||
2559 | static void | |
2560 | parse_repeat_cons (exp, nbytes) | |
2561 | expressionS *exp; | |
2562 | unsigned int nbytes; | |
2563 | { | |
2564 | expressionS count; | |
40324362 KR |
2565 | register int i; |
2566 | ||
2567 | expression (exp); | |
2568 | ||
2569 | if (*input_line_pointer != ':') | |
2570 | { | |
2571 | /* No repeat count. */ | |
2572 | return; | |
2573 | } | |
2574 | ||
2575 | ++input_line_pointer; | |
5ac34ac3 ILT |
2576 | expression (&count); |
2577 | if (count.X_op != O_constant | |
40324362 KR |
2578 | || count.X_add_number <= 0) |
2579 | { | |
2580 | as_warn ("Unresolvable or nonpositive repeat count; using 1"); | |
2581 | return; | |
2582 | } | |
2583 | ||
2584 | /* The cons function is going to output this expression once. So we | |
2585 | output it count - 1 times. */ | |
2586 | for (i = count.X_add_number - 1; i > 0; i--) | |
2587 | emit_expr (exp, nbytes); | |
2588 | } | |
2589 | ||
2590 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
fecd2382 | 2591 | \f |
e28c40d7 ILT |
2592 | /* Parse a floating point number represented as a hex constant. This |
2593 | permits users to specify the exact bits they want in the floating | |
2594 | point number. */ | |
2595 | ||
2596 | static int | |
2597 | hex_float (float_type, bytes) | |
2598 | int float_type; | |
2599 | char *bytes; | |
2600 | { | |
2601 | int length; | |
2602 | int i; | |
2603 | ||
2604 | switch (float_type) | |
2605 | { | |
2606 | case 'f': | |
2607 | case 'F': | |
2608 | case 's': | |
2609 | case 'S': | |
2610 | length = 4; | |
2611 | break; | |
2612 | ||
2613 | case 'd': | |
2614 | case 'D': | |
2615 | case 'r': | |
2616 | case 'R': | |
2617 | length = 8; | |
2618 | break; | |
2619 | ||
2620 | case 'x': | |
2621 | case 'X': | |
2622 | length = 12; | |
2623 | break; | |
2624 | ||
2625 | case 'p': | |
2626 | case 'P': | |
2627 | length = 12; | |
2628 | break; | |
2629 | ||
2630 | default: | |
2631 | as_bad ("Unknown floating type type '%c'", float_type); | |
2632 | return -1; | |
2633 | } | |
2634 | ||
2635 | /* It would be nice if we could go through expression to parse the | |
2636 | hex constant, but if we get a bignum it's a pain to sort it into | |
2637 | the buffer correctly. */ | |
2638 | i = 0; | |
2639 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
2640 | { | |
2641 | int d; | |
2642 | ||
2643 | /* The MRI assembler accepts arbitrary underscores strewn about | |
2644 | through the hex constant, so we ignore them as well. */ | |
2645 | if (*input_line_pointer == '_') | |
2646 | { | |
2647 | ++input_line_pointer; | |
2648 | continue; | |
2649 | } | |
2650 | ||
2651 | if (i >= length) | |
2652 | { | |
2653 | as_warn ("Floating point constant too large"); | |
2654 | return -1; | |
2655 | } | |
2656 | d = hex_value (*input_line_pointer) << 4; | |
2657 | ++input_line_pointer; | |
2658 | while (*input_line_pointer == '_') | |
2659 | ++input_line_pointer; | |
2660 | if (hex_p (*input_line_pointer)) | |
2661 | { | |
2662 | d += hex_value (*input_line_pointer); | |
2663 | ++input_line_pointer; | |
2664 | } | |
2665 | bytes[i++] = d; | |
2666 | } | |
2667 | ||
2668 | if (i < length) | |
2669 | memset (bytes + i, 0, length - i); | |
2670 | ||
2671 | return length; | |
2672 | } | |
2673 | ||
fecd2382 RP |
2674 | /* |
2675 | * float_cons() | |
2676 | * | |
2677 | * CONStruct some more frag chars of .floats .ffloats etc. | |
2678 | * Makes 0 or more new frags. | |
2679 | * If need_pass_2 == 1, no frags are emitted. | |
2680 | * This understands only floating literals, not expressions. Sorry. | |
2681 | * | |
2682 | * A floating constant is defined by atof_generic(), except it is preceded | |
2683 | * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
2684 | * reading, I decided to be incompatible. This always tries to give you | |
2685 | * rounded bits to the precision of the pseudo-op. Former AS did premature | |
2686 | * truncatation, restored noisy bits instead of trailing 0s AND gave you | |
2687 | * a choice of 2 flavours of noise according to which of 2 floating-point | |
2688 | * scanners you directed AS to use. | |
2689 | * | |
2690 | * In: input_line_pointer->whitespace before, or '0' of flonum. | |
2691 | * | |
2692 | */ | |
2693 | ||
ba71c54d KR |
2694 | void |
2695 | float_cons (float_type) | |
6efd877d | 2696 | /* Clobbers input_line-pointer, checks end-of-line. */ |
f8701a3f | 2697 | register int float_type; /* 'f':.ffloat ... 'F':.float ... */ |
fecd2382 | 2698 | { |
6efd877d | 2699 | register char *p; |
6efd877d KR |
2700 | int length; /* Number of chars in an object. */ |
2701 | register char *err; /* Error from scanning floating literal. */ | |
2702 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
f8701a3f | 2703 | |
6efd877d | 2704 | if (is_it_end_of_statement ()) |
f8701a3f | 2705 | { |
1e9cf565 ILT |
2706 | demand_empty_rest_of_line (); |
2707 | return; | |
f8701a3f | 2708 | } |
1e9cf565 ILT |
2709 | |
2710 | do | |
f8701a3f SC |
2711 | { |
2712 | /* input_line_pointer->1st char of a flonum (we hope!). */ | |
6efd877d | 2713 | SKIP_WHITESPACE (); |
1e9cf565 | 2714 | |
f8701a3f SC |
2715 | /* Skip any 0{letter} that may be present. Don't even check if the |
2716 | * letter is legal. Someone may invent a "z" format and this routine | |
2717 | * has no use for such information. Lusers beware: you get | |
2718 | * diagnostics if your input is ill-conditioned. | |
2719 | */ | |
6efd877d KR |
2720 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) |
2721 | input_line_pointer += 2; | |
f8701a3f | 2722 | |
1356d77d ILT |
2723 | /* Accept :xxxx, where the x's are hex digits, for a floating |
2724 | point with the exact digits specified. */ | |
2725 | if (input_line_pointer[0] == ':') | |
f8701a3f | 2726 | { |
e28c40d7 ILT |
2727 | ++input_line_pointer; |
2728 | length = hex_float (float_type, temp); | |
2729 | if (length < 0) | |
1356d77d | 2730 | { |
1356d77d ILT |
2731 | ignore_rest_of_line (); |
2732 | return; | |
2733 | } | |
1356d77d ILT |
2734 | } |
2735 | else | |
2736 | { | |
2737 | err = md_atof (float_type, temp, &length); | |
2738 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
2739 | know (length > 0); | |
2740 | if (err) | |
2741 | { | |
2742 | as_bad ("Bad floating literal: %s", err); | |
2743 | ignore_rest_of_line (); | |
2744 | return; | |
2745 | } | |
f8701a3f | 2746 | } |
1e9cf565 ILT |
2747 | |
2748 | if (!need_pass_2) | |
f8701a3f | 2749 | { |
1e9cf565 ILT |
2750 | int count; |
2751 | ||
2752 | count = 1; | |
2753 | ||
2754 | #ifdef REPEAT_CONS_EXPRESSIONS | |
2755 | if (*input_line_pointer == ':') | |
2756 | { | |
1e9cf565 ILT |
2757 | expressionS count_exp; |
2758 | ||
2759 | ++input_line_pointer; | |
5ac34ac3 ILT |
2760 | expression (&count_exp); |
2761 | if (count_exp.X_op != O_constant | |
1e9cf565 ILT |
2762 | || count_exp.X_add_number <= 0) |
2763 | { | |
5ac34ac3 | 2764 | as_warn ("unresolvable or nonpositive repeat count; using 1"); |
1e9cf565 ILT |
2765 | } |
2766 | else | |
2767 | count = count_exp.X_add_number; | |
2768 | } | |
2769 | #endif | |
2770 | ||
2771 | while (--count >= 0) | |
a39116f1 | 2772 | { |
f8701a3f | 2773 | p = frag_more (length); |
604633ae | 2774 | memcpy (p, temp, (unsigned int) length); |
a39116f1 | 2775 | } |
542e1629 | 2776 | } |
1e9cf565 | 2777 | SKIP_WHITESPACE (); |
f8701a3f | 2778 | } |
1e9cf565 ILT |
2779 | while (*input_line_pointer++ == ','); |
2780 | ||
2781 | --input_line_pointer; /* Put terminator back into stream. */ | |
6efd877d | 2782 | demand_empty_rest_of_line (); |
f8701a3f | 2783 | } /* float_cons() */ |
fecd2382 RP |
2784 | \f |
2785 | /* | |
2786 | * stringer() | |
2787 | * | |
2788 | * We read 0 or more ',' seperated, double-quoted strings. | |
2789 | * | |
2790 | * Caller should have checked need_pass_2 is FALSE because we don't check it. | |
2791 | */ | |
a39116f1 RP |
2792 | |
2793 | ||
6efd877d KR |
2794 | void |
2795 | stringer (append_zero) /* Worker to do .ascii etc statements. */ | |
2796 | /* Checks end-of-line. */ | |
f8701a3f | 2797 | register int append_zero; /* 0: don't append '\0', else 1 */ |
fecd2382 | 2798 | { |
f8701a3f | 2799 | register unsigned int c; |
6efd877d | 2800 | |
a2a5a4fa KR |
2801 | #ifdef md_flush_pending_output |
2802 | md_flush_pending_output (); | |
2803 | #endif | |
2804 | ||
f8701a3f SC |
2805 | /* |
2806 | * The following awkward logic is to parse ZERO or more strings, | |
2807 | * comma seperated. Recall a string expression includes spaces | |
2808 | * before the opening '\"' and spaces after the closing '\"'. | |
2809 | * We fake a leading ',' if there is (supposed to be) | |
2810 | * a 1st, expression. We keep demanding expressions for each | |
2811 | * ','. | |
2812 | */ | |
6efd877d KR |
2813 | if (is_it_end_of_statement ()) |
2814 | { | |
2815 | c = 0; /* Skip loop. */ | |
2816 | ++input_line_pointer; /* Compensate for end of loop. */ | |
2817 | } | |
f8701a3f | 2818 | else |
6efd877d KR |
2819 | { |
2820 | c = ','; /* Do loop. */ | |
2821 | } | |
2822 | while (c == ',' || c == '<' || c == '"') | |
2823 | { | |
2824 | SKIP_WHITESPACE (); | |
2825 | switch (*input_line_pointer) | |
2826 | { | |
2827 | case '\"': | |
2828 | ++input_line_pointer; /*->1st char of string. */ | |
2829 | while (is_a_char (c = next_char_of_string ())) | |
2830 | { | |
2831 | FRAG_APPEND_1_CHAR (c); | |
2832 | } | |
2833 | if (append_zero) | |
2834 | { | |
2835 | FRAG_APPEND_1_CHAR (0); | |
2836 | } | |
2837 | know (input_line_pointer[-1] == '\"'); | |
2838 | break; | |
2839 | case '<': | |
2840 | input_line_pointer++; | |
2841 | c = get_single_number (); | |
2842 | FRAG_APPEND_1_CHAR (c); | |
2843 | if (*input_line_pointer != '>') | |
2844 | { | |
2845 | as_bad ("Expected <nn>"); | |
2846 | } | |
2847 | input_line_pointer++; | |
2848 | break; | |
2849 | case ',': | |
2850 | input_line_pointer++; | |
2851 | break; | |
2852 | } | |
2853 | SKIP_WHITESPACE (); | |
2854 | c = *input_line_pointer; | |
f8701a3f | 2855 | } |
f8701a3f | 2856 | |
6efd877d KR |
2857 | demand_empty_rest_of_line (); |
2858 | } /* stringer() */ | |
fecd2382 | 2859 | \f |
6efd877d | 2860 | /* FIXME-SOMEDAY: I had trouble here on characters with the |
f8701a3f SC |
2861 | high bits set. We'll probably also have trouble with |
2862 | multibyte chars, wide chars, etc. Also be careful about | |
2863 | returning values bigger than 1 byte. xoxorich. */ | |
fecd2382 | 2864 | |
6efd877d KR |
2865 | unsigned int |
2866 | next_char_of_string () | |
2867 | { | |
2868 | register unsigned int c; | |
2869 | ||
2870 | c = *input_line_pointer++ & CHAR_MASK; | |
2871 | switch (c) | |
2872 | { | |
2873 | case '\"': | |
2874 | c = NOT_A_CHAR; | |
2875 | break; | |
2876 | ||
ddb393cf | 2877 | #ifndef NO_STRING_ESCAPES |
6efd877d KR |
2878 | case '\\': |
2879 | switch (c = *input_line_pointer++) | |
2880 | { | |
2881 | case 'b': | |
2882 | c = '\b'; | |
2883 | break; | |
2884 | ||
2885 | case 'f': | |
2886 | c = '\f'; | |
2887 | break; | |
2888 | ||
2889 | case 'n': | |
2890 | c = '\n'; | |
2891 | break; | |
2892 | ||
2893 | case 'r': | |
2894 | c = '\r'; | |
2895 | break; | |
2896 | ||
2897 | case 't': | |
2898 | c = '\t'; | |
2899 | break; | |
2900 | ||
6efd877d KR |
2901 | case 'v': |
2902 | c = '\013'; | |
2903 | break; | |
6efd877d KR |
2904 | |
2905 | case '\\': | |
2906 | case '"': | |
2907 | break; /* As itself. */ | |
2908 | ||
2909 | case '0': | |
2910 | case '1': | |
2911 | case '2': | |
2912 | case '3': | |
2913 | case '4': | |
2914 | case '5': | |
2915 | case '6': | |
2916 | case '7': | |
2917 | case '8': | |
2918 | case '9': | |
2919 | { | |
2920 | long number; | |
d4c8cbd8 | 2921 | int i; |
6efd877d | 2922 | |
d4c8cbd8 | 2923 | for (i = 0, number = 0; isdigit (c) && i < 3; c = *input_line_pointer++, i++) |
6efd877d KR |
2924 | { |
2925 | number = number * 8 + c - '0'; | |
2926 | } | |
2927 | c = number & 0xff; | |
2928 | } | |
2929 | --input_line_pointer; | |
2930 | break; | |
2931 | ||
d4c8cbd8 JL |
2932 | case 'x': |
2933 | case 'X': | |
2934 | { | |
2935 | long number; | |
2936 | ||
2937 | number = 0; | |
2938 | c = *input_line_pointer++; | |
2939 | while (isxdigit (c)) | |
2940 | { | |
2941 | if (isdigit (c)) | |
2942 | number = number * 16 + c - '0'; | |
2943 | else if (isupper (c)) | |
2944 | number = number * 16 + c - 'A' + 10; | |
2945 | else | |
2946 | number = number * 16 + c - 'a' + 10; | |
2947 | c = *input_line_pointer++; | |
2948 | } | |
2949 | c = number & 0xff; | |
2950 | --input_line_pointer; | |
2951 | } | |
2952 | break; | |
2953 | ||
6efd877d KR |
2954 | case '\n': |
2955 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ | |
2956 | as_warn ("Unterminated string: Newline inserted."); | |
2957 | c = '\n'; | |
2958 | break; | |
2959 | ||
2960 | default: | |
2961 | ||
fecd2382 | 2962 | #ifdef ONLY_STANDARD_ESCAPES |
6efd877d KR |
2963 | as_bad ("Bad escaped character in string, '?' assumed"); |
2964 | c = '?'; | |
fecd2382 | 2965 | #endif /* ONLY_STANDARD_ESCAPES */ |
6efd877d KR |
2966 | |
2967 | break; | |
2968 | } /* switch on escaped char */ | |
2969 | break; | |
ddb393cf | 2970 | #endif /* ! defined (NO_STRING_ESCAPES) */ |
6efd877d KR |
2971 | |
2972 | default: | |
2973 | break; | |
2974 | } /* switch on char */ | |
2975 | return (c); | |
2976 | } /* next_char_of_string() */ | |
fecd2382 RP |
2977 | \f |
2978 | static segT | |
f8701a3f | 2979 | get_segmented_expression (expP) |
6efd877d | 2980 | register expressionS *expP; |
fecd2382 | 2981 | { |
6efd877d | 2982 | register segT retval; |
f8701a3f | 2983 | |
9471a360 | 2984 | retval = expression (expP); |
5ac34ac3 ILT |
2985 | if (expP->X_op == O_illegal |
2986 | || expP->X_op == O_absent | |
2987 | || expP->X_op == O_big) | |
f8701a3f | 2988 | { |
5ac34ac3 ILT |
2989 | as_bad ("expected address expression; zero assumed"); |
2990 | expP->X_op = O_constant; | |
6efd877d | 2991 | expP->X_add_number = 0; |
5ac34ac3 | 2992 | retval = absolute_section; |
f8701a3f | 2993 | } |
5ac34ac3 | 2994 | return retval; |
fecd2382 RP |
2995 | } |
2996 | ||
6efd877d KR |
2997 | static segT |
2998 | get_known_segmented_expression (expP) | |
2999 | register expressionS *expP; | |
fecd2382 | 3000 | { |
6efd877d | 3001 | register segT retval; |
f8701a3f | 3002 | |
9471a360 | 3003 | if ((retval = get_segmented_expression (expP)) == undefined_section) |
f8701a3f | 3004 | { |
5ac34ac3 ILT |
3005 | /* There is no easy way to extract the undefined symbol from the |
3006 | expression. */ | |
3007 | if (expP->X_add_symbol != NULL | |
3008 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
3009 | as_warn ("symbol \"%s\" undefined; zero assumed", | |
3010 | S_GET_NAME (expP->X_add_symbol)); | |
f8701a3f | 3011 | else |
5ac34ac3 ILT |
3012 | as_warn ("some symbol undefined; zero assumed"); |
3013 | retval = absolute_section; | |
3014 | expP->X_op = O_constant; | |
6efd877d | 3015 | expP->X_add_number = 0; |
f8701a3f | 3016 | } |
5ac34ac3 | 3017 | know (retval == absolute_section || SEG_NORMAL (retval)); |
f8701a3f | 3018 | return (retval); |
fecd2382 RP |
3019 | } /* get_known_segmented_expression() */ |
3020 | ||
58d4951d | 3021 | offsetT |
f8701a3f | 3022 | get_absolute_expression () |
fecd2382 | 3023 | { |
6efd877d | 3024 | expressionS exp; |
f8701a3f | 3025 | |
5ac34ac3 ILT |
3026 | expression (&exp); |
3027 | if (exp.X_op != O_constant) | |
f8701a3f | 3028 | { |
5ac34ac3 | 3029 | if (exp.X_op != O_absent) |
cd3b81bd | 3030 | as_bad ("bad or irreducible absolute expression; zero assumed"); |
6efd877d | 3031 | exp.X_add_number = 0; |
f8701a3f | 3032 | } |
5ac34ac3 | 3033 | return exp.X_add_number; |
fecd2382 RP |
3034 | } |
3035 | ||
6efd877d KR |
3036 | char /* return terminator */ |
3037 | get_absolute_expression_and_terminator (val_pointer) | |
3038 | long *val_pointer; /* return value of expression */ | |
fecd2382 | 3039 | { |
58d4951d ILT |
3040 | /* FIXME: val_pointer should probably be offsetT *. */ |
3041 | *val_pointer = (long) get_absolute_expression (); | |
6efd877d | 3042 | return (*input_line_pointer++); |
fecd2382 RP |
3043 | } |
3044 | \f | |
3045 | /* | |
3046 | * demand_copy_C_string() | |
3047 | * | |
3048 | * Like demand_copy_string, but return NULL if the string contains any '\0's. | |
3049 | * Give a warning if that happens. | |
3050 | */ | |
3051 | char * | |
f8701a3f | 3052 | demand_copy_C_string (len_pointer) |
6efd877d | 3053 | int *len_pointer; |
fecd2382 | 3054 | { |
6efd877d | 3055 | register char *s; |
f8701a3f | 3056 | |
6efd877d | 3057 | if ((s = demand_copy_string (len_pointer)) != 0) |
f8701a3f SC |
3058 | { |
3059 | register int len; | |
3060 | ||
6efd877d | 3061 | for (len = *len_pointer; |
f8701a3f SC |
3062 | len > 0; |
3063 | len--) | |
3064 | { | |
6efd877d | 3065 | if (*s == 0) |
fecd2382 | 3066 | { |
f8701a3f SC |
3067 | s = 0; |
3068 | len = 1; | |
6efd877d KR |
3069 | *len_pointer = 0; |
3070 | as_bad ("This string may not contain \'\\0\'"); | |
fecd2382 | 3071 | } |
f8701a3f SC |
3072 | } |
3073 | } | |
3074 | return (s); | |
fecd2382 RP |
3075 | } |
3076 | \f | |
3077 | /* | |
3078 | * demand_copy_string() | |
3079 | * | |
3080 | * Demand string, but return a safe (=private) copy of the string. | |
3081 | * Return NULL if we can't read a string here. | |
3082 | */ | |
6ef37255 | 3083 | char * |
6efd877d KR |
3084 | demand_copy_string (lenP) |
3085 | int *lenP; | |
fecd2382 | 3086 | { |
6efd877d KR |
3087 | register unsigned int c; |
3088 | register int len; | |
3089 | char *retval; | |
3090 | ||
3091 | len = 0; | |
3092 | SKIP_WHITESPACE (); | |
3093 | if (*input_line_pointer == '\"') | |
3094 | { | |
3095 | input_line_pointer++; /* Skip opening quote. */ | |
3096 | ||
3097 | while (is_a_char (c = next_char_of_string ())) | |
3098 | { | |
3099 | obstack_1grow (¬es, c); | |
3100 | len++; | |
fecd2382 | 3101 | } |
6efd877d KR |
3102 | /* JF this next line is so demand_copy_C_string will return a null |
3103 | termanated string. */ | |
3104 | obstack_1grow (¬es, '\0'); | |
3105 | retval = obstack_finish (¬es); | |
3106 | } | |
3107 | else | |
3108 | { | |
3109 | as_warn ("Missing string"); | |
3110 | retval = NULL; | |
3111 | ignore_rest_of_line (); | |
3112 | } | |
3113 | *lenP = len; | |
3114 | return (retval); | |
3115 | } /* demand_copy_string() */ | |
fecd2382 RP |
3116 | \f |
3117 | /* | |
3118 | * is_it_end_of_statement() | |
3119 | * | |
3120 | * In: Input_line_pointer->next character. | |
3121 | * | |
3122 | * Do: Skip input_line_pointer over all whitespace. | |
3123 | * | |
3124 | * Out: 1 if input_line_pointer->end-of-line. | |
f8701a3f | 3125 | */ |
6efd877d KR |
3126 | int |
3127 | is_it_end_of_statement () | |
3128 | { | |
3129 | SKIP_WHITESPACE (); | |
58d4951d | 3130 | return (is_end_of_line[(unsigned char) *input_line_pointer]); |
6efd877d | 3131 | } /* is_it_end_of_statement() */ |
fecd2382 | 3132 | |
6efd877d KR |
3133 | void |
3134 | equals (sym_name) | |
3135 | char *sym_name; | |
fecd2382 | 3136 | { |
6efd877d | 3137 | register symbolS *symbolP; /* symbol we are working with */ |
f8701a3f SC |
3138 | |
3139 | input_line_pointer++; | |
6efd877d | 3140 | if (*input_line_pointer == '=') |
f8701a3f SC |
3141 | input_line_pointer++; |
3142 | ||
6efd877d | 3143 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') |
f8701a3f SC |
3144 | input_line_pointer++; |
3145 | ||
6efd877d KR |
3146 | if (sym_name[0] == '.' && sym_name[1] == '\0') |
3147 | { | |
3148 | /* Turn '. = mumble' into a .org mumble */ | |
3149 | register segT segment; | |
3150 | expressionS exp; | |
3151 | register char *p; | |
f8701a3f | 3152 | |
6efd877d KR |
3153 | segment = get_known_segmented_expression (&exp); |
3154 | if (!need_pass_2) | |
e28c40d7 | 3155 | do_org (segment, &exp, 0); |
6efd877d KR |
3156 | } |
3157 | else | |
3158 | { | |
3159 | symbolP = symbol_find_or_make (sym_name); | |
3160 | pseudo_set (symbolP); | |
3161 | } | |
3162 | } /* equals() */ | |
fecd2382 RP |
3163 | |
3164 | /* .include -- include a file at this point. */ | |
3165 | ||
3166 | /* ARGSUSED */ | |
6efd877d KR |
3167 | void |
3168 | s_include (arg) | |
3169 | int arg; | |
fecd2382 | 3170 | { |
f8701a3f SC |
3171 | char *newbuf; |
3172 | char *filename; | |
3173 | int i; | |
3174 | FILE *try; | |
3175 | char *path; | |
3176 | ||
6efd877d KR |
3177 | filename = demand_copy_string (&i); |
3178 | demand_empty_rest_of_line (); | |
604633ae | 3179 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); |
6efd877d KR |
3180 | for (i = 0; i < include_dir_count; i++) |
3181 | { | |
3182 | strcpy (path, include_dirs[i]); | |
3183 | strcat (path, "/"); | |
3184 | strcat (path, filename); | |
f2889110 | 3185 | if (0 != (try = fopen (path, "r"))) |
6efd877d KR |
3186 | { |
3187 | fclose (try); | |
3188 | goto gotit; | |
3189 | } | |
3190 | } | |
3191 | free (path); | |
f8701a3f SC |
3192 | path = filename; |
3193 | gotit: | |
3194 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ | |
3195 | newbuf = input_scrub_include_file (path, input_line_pointer); | |
3196 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6efd877d | 3197 | } /* s_include() */ |
fecd2382 | 3198 | |
6efd877d KR |
3199 | void |
3200 | add_include_dir (path) | |
3201 | char *path; | |
fecd2382 | 3202 | { |
f8701a3f SC |
3203 | int i; |
3204 | ||
3205 | if (include_dir_count == 0) | |
3206 | { | |
6efd877d | 3207 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); |
f8701a3f SC |
3208 | include_dirs[0] = "."; /* Current dir */ |
3209 | include_dir_count = 2; | |
3210 | } | |
3211 | else | |
3212 | { | |
3213 | include_dir_count++; | |
6efd877d KR |
3214 | include_dirs = (char **) realloc (include_dirs, |
3215 | include_dir_count * sizeof (*include_dirs)); | |
f8701a3f SC |
3216 | } |
3217 | ||
6efd877d | 3218 | include_dirs[include_dir_count - 1] = path; /* New one */ |
f8701a3f | 3219 | |
6efd877d KR |
3220 | i = strlen (path); |
3221 | if (i > include_dir_maxlen) | |
3222 | include_dir_maxlen = i; | |
3223 | } /* add_include_dir() */ | |
fecd2382 | 3224 | |
6efd877d KR |
3225 | void |
3226 | s_ignore (arg) | |
3227 | int arg; | |
fecd2382 | 3228 | { |
58d4951d | 3229 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
3230 | { |
3231 | ++input_line_pointer; | |
3232 | } | |
3233 | ++input_line_pointer; | |
4064305e SS |
3234 | } |
3235 | ||
604633ae | 3236 | |
fecd2382 | 3237 | /* end of read.c */ |