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" |
7e047ac2 ILT |
45 | #include "sb.h" |
46 | #include "macro.h" | |
1356d77d | 47 | #include "libiberty.h" |
fecd2382 | 48 | #include "obstack.h" |
9a7d824a ILT |
49 | #include "listing.h" |
50 | ||
9a7d824a ILT |
51 | #ifndef TC_START_LABEL |
52 | #define TC_START_LABEL(x,y) (x==':') | |
53 | #endif | |
fecd2382 | 54 | |
016e0d42 ILT |
55 | /* The NOP_OPCODE is for the alignment fill value. |
56 | * fill it a nop instruction so that the disassembler does not choke | |
57 | * on it | |
58 | */ | |
59 | #ifndef NOP_OPCODE | |
60 | #define NOP_OPCODE 0x00 | |
61 | #endif | |
62 | ||
63 | char *input_line_pointer; /*->next char of source file to parse. */ | |
fecd2382 | 64 | |
326d16ca | 65 | int generate_asm_lineno = 0; /* flag to generate line stab for .s file */ |
daad3bbf | 66 | |
fecd2382 | 67 | #if BITS_PER_CHAR != 8 |
6efd877d KR |
68 | /* The following table is indexed by[(char)] and will break if |
69 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
70 | die horribly; | |
fecd2382 | 71 | #endif |
f8701a3f | 72 | |
c978e704 ILT |
73 | #ifndef LEX_AT |
74 | /* The m88k unfortunately uses @ as a label beginner. */ | |
75 | #define LEX_AT 0 | |
76 | #endif | |
77 | ||
ddb393cf ILT |
78 | #ifndef LEX_BR |
79 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
80 | #define LEX_BR 0 | |
81 | #endif | |
82 | ||
6ef37255 KR |
83 | #ifndef LEX_PCT |
84 | /* The Delta 68k assembler permits % inside label names. */ | |
85 | #define LEX_PCT 0 | |
86 | #endif | |
87 | ||
18c9057f ILT |
88 | #ifndef LEX_QM |
89 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
90 | #define LEX_QM 0 | |
91 | #endif | |
92 | ||
6594d6b9 KR |
93 | #ifndef LEX_DOLLAR |
94 | /* The a29k assembler does not permits labels to start with $. */ | |
95 | #define LEX_DOLLAR 3 | |
96 | #endif | |
97 | ||
016e0d42 | 98 | /* used by is_... macros. our ctype[] */ |
1356d77d | 99 | char lex_type[256] = |
016e0d42 ILT |
100 | { |
101 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ | |
102 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
6594d6b9 | 103 | 0, 0, 0, 0, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
18c9057f | 104 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
c978e704 | 105 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ |
ddb393cf | 106 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ |
016e0d42 | 107 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ |
ddb393cf | 108 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 0, /* pqrstuvwxyz{|}~. */ |
016e0d42 ILT |
109 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
110 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
112 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
113 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
114 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
115 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
116 | }; | |
117 | ||
118 | ||
119 | /* | |
fecd2382 RP |
120 | * In: a character. |
121 | * Out: 1 if this character ends a line. | |
122 | */ | |
123 | #define _ (0) | |
016e0d42 ILT |
124 | char is_end_of_line[256] = |
125 | { | |
fecd2382 | 126 | #ifdef CR_EOL |
016e0d42 | 127 | _, _, _, _, _, _, _, _, _, _, 99, _, _, 99, _, _, /* @abcdefghijklmno */ |
fecd2382 | 128 | #else |
016e0d42 | 129 | _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, _, /* @abcdefghijklmno */ |
fecd2382 | 130 | #endif |
016e0d42 | 131 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
40324362 KR |
132 | #ifdef TC_HPPA |
133 | _,99, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* _!"#$%&'()*+,-./ */ | |
134 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* 0123456789:;<=>? */ | |
135 | #else | |
016e0d42 ILT |
136 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
137 | _, _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, /* 0123456789:;<=>? */ | |
40324362 | 138 | #endif |
016e0d42 ILT |
139 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
140 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
141 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
142 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
143 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
144 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
145 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
146 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
147 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
148 | }; | |
fecd2382 RP |
149 | #undef _ |
150 | ||
016e0d42 ILT |
151 | /* Functions private to this file. */ |
152 | ||
153 | static char *buffer; /* 1st char of each buffer of lines is here. */ | |
154 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
fecd2382 | 155 | |
2209b19c KR |
156 | #ifdef TARGET_BYTES_BIG_ENDIAN |
157 | /* Hack to deal with tc-*.h defining TARGET_BYTES_BIG_ENDIAN to empty | |
158 | instead of to 0 or 1. */ | |
159 | #if 5 - TARGET_BYTES_BIG_ENDIAN - 5 == 10 | |
160 | #undef TARGET_BYTES_BIG_ENDIAN | |
161 | #define TARGET_BYTES_BIG_ENDIAN 1 | |
162 | #endif | |
163 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; | |
164 | #else | |
165 | int target_big_endian /* = 0 */; | |
166 | #endif | |
9c6d3f66 | 167 | |
9471a360 | 168 | static char *old_buffer; /* JF a hack */ |
016e0d42 ILT |
169 | static char *old_input; |
170 | static char *old_limit; | |
fecd2382 | 171 | |
016e0d42 | 172 | /* Variables for handling include file directory list. */ |
fecd2382 | 173 | |
016e0d42 ILT |
174 | char **include_dirs; /* List of pointers to directories to |
175 | search for .include's */ | |
176 | int include_dir_count; /* How many are in the list */ | |
177 | int include_dir_maxlen = 1;/* Length of longest in list */ | |
fecd2382 RP |
178 | |
179 | #ifndef WORKING_DOT_WORD | |
016e0d42 | 180 | struct broken_word *broken_words; |
9471a360 | 181 | int new_broken_words; |
fecd2382 RP |
182 | #endif |
183 | ||
e28c40d7 ILT |
184 | /* The current offset into the absolute section. We don't try to |
185 | build frags in the absolute section, since no data can be stored | |
186 | there. We just keep track of the current offset. */ | |
187 | addressT abs_section_offset; | |
188 | ||
1356d77d ILT |
189 | /* If this line had an MRI style label, it is stored in this variable. |
190 | This is used by some of the MRI pseudo-ops. */ | |
7e047ac2 | 191 | symbolS *line_label; |
1356d77d ILT |
192 | |
193 | /* This global variable is used to support MRI common sections. We | |
194 | translate such sections into a common symbol. This variable is | |
195 | non-NULL when we are in an MRI common section. */ | |
196 | symbolS *mri_common_symbol; | |
197 | ||
286cb27a ILT |
198 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we |
199 | need to align to an even byte boundary unless the next pseudo-op is | |
200 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
201 | may be needed. */ | |
202 | static int mri_pending_align; | |
203 | ||
86038ada | 204 | static int scrub_from_string PARAMS ((char **)); |
286cb27a | 205 | static void do_align PARAMS ((int, char *)); |
e28c40d7 ILT |
206 | static int hex_float PARAMS ((int, char *)); |
207 | static void do_org PARAMS ((segT, expressionS *, int)); | |
6ef37255 | 208 | char *demand_copy_string PARAMS ((int *lenP)); |
016e0d42 | 209 | int is_it_end_of_statement PARAMS ((void)); |
5ac34ac3 | 210 | static segT get_segmented_expression PARAMS ((expressionS *expP)); |
016e0d42 | 211 | static segT get_known_segmented_expression PARAMS ((expressionS * expP)); |
016e0d42 | 212 | static void pobegin PARAMS ((void)); |
7e047ac2 | 213 | static int get_line_sb PARAMS ((sb *)); |
fecd2382 | 214 | \f |
6efd877d | 215 | |
016e0d42 ILT |
216 | void |
217 | read_begin () | |
fecd2382 | 218 | { |
016e0d42 | 219 | const char *p; |
f8701a3f | 220 | |
6efd877d KR |
221 | pobegin (); |
222 | obj_read_begin_hook (); | |
f8701a3f | 223 | |
4380166d KR |
224 | /* Something close -- but not too close -- to a multiple of 1024. |
225 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
6594d6b9 KR |
226 | obstack_begin (¬es, chunksize); |
227 | obstack_begin (&cond_obstack, chunksize); | |
f8701a3f | 228 | |
f8701a3f SC |
229 | /* Use machine dependent syntax */ |
230 | for (p = line_separator_chars; *p; p++) | |
58d4951d | 231 | is_end_of_line[(unsigned char) *p] = 1; |
f8701a3f | 232 | /* Use more. FIXME-SOMEDAY. */ |
1356d77d ILT |
233 | |
234 | if (flag_mri) | |
235 | lex_type['?'] = 3; | |
fecd2382 RP |
236 | } |
237 | \f | |
238 | /* set up pseudo-op tables */ | |
239 | ||
1356d77d | 240 | static struct hash_control *po_hash; |
fecd2382 | 241 | |
016e0d42 | 242 | static const pseudo_typeS potable[] = |
fecd2382 | 243 | { |
6efd877d KR |
244 | {"abort", s_abort, 0}, |
245 | {"align", s_align_ptwo, 0}, | |
246 | {"ascii", stringer, 0}, | |
247 | {"asciz", stringer, 1}, | |
931a8fab | 248 | {"balign", s_align_bytes, 0}, |
f8701a3f | 249 | /* block */ |
6efd877d KR |
250 | {"byte", cons, 1}, |
251 | {"comm", s_comm, 0}, | |
1356d77d ILT |
252 | {"common", s_mri_common, 0}, |
253 | {"common.s", s_mri_common, 1}, | |
6efd877d | 254 | {"data", s_data, 0}, |
1356d77d ILT |
255 | {"dc", cons, 2}, |
256 | {"dc.b", cons, 1}, | |
257 | {"dc.d", float_cons, 'd'}, | |
258 | {"dc.l", cons, 4}, | |
259 | {"dc.s", float_cons, 'f'}, | |
260 | {"dc.w", cons, 2}, | |
261 | {"dc.x", float_cons, 'x'}, | |
e28c40d7 ILT |
262 | {"dcb", s_space, 2}, |
263 | {"dcb.b", s_space, 1}, | |
264 | {"dcb.d", s_float_space, 'd'}, | |
265 | {"dcb.l", s_space, 4}, | |
266 | {"dcb.s", s_float_space, 'f'}, | |
267 | {"dcb.w", s_space, 2}, | |
268 | {"dcb.x", s_float_space, 'x'}, | |
1356d77d ILT |
269 | {"ds", s_space, 2}, |
270 | {"ds.b", s_space, 1}, | |
e28c40d7 | 271 | {"ds.d", s_space, 8}, |
1356d77d | 272 | {"ds.l", s_space, 4}, |
e28c40d7 ILT |
273 | {"ds.p", s_space, 12}, |
274 | {"ds.s", s_space, 4}, | |
1356d77d | 275 | {"ds.w", s_space, 2}, |
e28c40d7 | 276 | {"ds.x", s_space, 12}, |
42ac8fa8 | 277 | {"debug", s_ignore, 0}, |
604633ae | 278 | #ifdef S_SET_DESC |
4064305e | 279 | {"desc", s_desc, 0}, |
604633ae | 280 | #endif |
f8701a3f | 281 | /* dim */ |
6efd877d | 282 | {"double", float_cons, 'd'}, |
f8701a3f | 283 | /* dsect */ |
6efd877d KR |
284 | {"eject", listing_eject, 0}, /* Formfeed listing */ |
285 | {"else", s_else, 0}, | |
e28c40d7 | 286 | {"elsec", s_else, 0}, |
6efd877d | 287 | {"end", s_end, 0}, |
e28c40d7 | 288 | {"endc", s_endif, 0}, |
6efd877d | 289 | {"endif", s_endif, 0}, |
f8701a3f | 290 | /* endef */ |
6efd877d | 291 | {"equ", s_set, 0}, |
42ac8fa8 | 292 | {"err", s_err, 0}, |
7e047ac2 | 293 | {"exitm", s_mexit, 0}, |
f8701a3f | 294 | /* extend */ |
6efd877d | 295 | {"extern", s_ignore, 0}, /* We treat all undef as ext */ |
9a7d824a ILT |
296 | {"appfile", s_app_file, 1}, |
297 | {"appline", s_app_line, 0}, | |
e28c40d7 | 298 | {"fail", s_fail, 0}, |
6efd877d KR |
299 | {"file", s_app_file, 0}, |
300 | {"fill", s_fill, 0}, | |
301 | {"float", float_cons, 'f'}, | |
e28c40d7 | 302 | {"format", s_ignore, 0}, |
6efd877d KR |
303 | {"global", s_globl, 0}, |
304 | {"globl", s_globl, 0}, | |
305 | {"hword", cons, 2}, | |
e28c40d7 | 306 | {"if", s_if, (int) O_ne}, |
7e047ac2 | 307 | {"ifc", s_ifc, 0}, |
6efd877d | 308 | {"ifdef", s_ifdef, 0}, |
e28c40d7 | 309 | {"ifeq", s_if, (int) O_eq}, |
6efd877d | 310 | {"ifeqs", s_ifeqs, 0}, |
e28c40d7 ILT |
311 | {"ifge", s_if, (int) O_ge}, |
312 | {"ifgt", s_if, (int) O_gt}, | |
313 | {"ifle", s_if, (int) O_le}, | |
314 | {"iflt", s_if, (int) O_lt}, | |
7e047ac2 | 315 | {"ifnc", s_ifc, 1}, |
6efd877d | 316 | {"ifndef", s_ifdef, 1}, |
e28c40d7 | 317 | {"ifne", s_if, (int) O_ne}, |
6efd877d KR |
318 | {"ifnes", s_ifeqs, 1}, |
319 | {"ifnotdef", s_ifdef, 1}, | |
320 | {"include", s_include, 0}, | |
321 | {"int", cons, 4}, | |
7e047ac2 | 322 | {"irp", s_irp, 0}, |
42ac8fa8 | 323 | {"irep", s_irp, 0}, |
7e047ac2 | 324 | {"irpc", s_irp, 1}, |
42ac8fa8 | 325 | {"irepc", s_irp, 1}, |
6efd877d KR |
326 | {"lcomm", s_lcomm, 0}, |
327 | {"lflags", listing_flags, 0}, /* Listing flags */ | |
328 | {"list", listing_list, 1}, /* Turn listing on */ | |
e28c40d7 | 329 | {"llen", listing_psize, 1}, |
6efd877d KR |
330 | {"long", cons, 4}, |
331 | {"lsym", s_lsym, 0}, | |
7e047ac2 ILT |
332 | {"macro", s_macro, 0}, |
333 | {"mexit", s_mexit, 0}, | |
e28c40d7 | 334 | {"noformat", s_ignore, 0}, |
6efd877d | 335 | {"nolist", listing_list, 0}, /* Turn listing off */ |
69e077f3 | 336 | {"nopage", listing_nopage, 0}, |
80aab579 | 337 | {"octa", cons, 16}, |
e28c40d7 | 338 | {"offset", s_struct, 0}, |
6efd877d | 339 | {"org", s_org, 0}, |
931a8fab | 340 | {"p2align", s_align_ptwo, 0}, |
69e077f3 ILT |
341 | {"page", listing_eject, 0}, |
342 | {"plen", listing_psize, 0}, | |
42ac8fa8 | 343 | {"print", s_print, 0}, |
6efd877d | 344 | {"psize", listing_psize, 0}, /* set paper size */ |
42ac8fa8 | 345 | {"purgem", s_purgem, 0}, |
80aab579 | 346 | {"quad", cons, 8}, |
42ac8fa8 | 347 | {"rep", s_rept, 0}, |
7e047ac2 | 348 | {"rept", s_rept, 0}, |
86038ada | 349 | {"rva", s_rva, 4}, |
6efd877d | 350 | {"sbttl", listing_title, 1}, /* Subtitle of listing */ |
f8701a3f SC |
351 | /* scl */ |
352 | /* sect */ | |
6efd877d KR |
353 | {"set", s_set, 0}, |
354 | {"short", cons, 2}, | |
355 | {"single", float_cons, 'f'}, | |
f8701a3f | 356 | /* size */ |
6efd877d | 357 | {"space", s_space, 0}, |
e14994d9 | 358 | {"spc", s_ignore, 0}, |
4064305e SS |
359 | {"stabd", s_stab, 'd'}, |
360 | {"stabn", s_stab, 'n'}, | |
361 | {"stabs", s_stab, 's'}, | |
ba71c54d | 362 | {"string", stringer, 1}, |
e28c40d7 | 363 | {"struct", s_struct, 0}, |
f8701a3f | 364 | /* tag */ |
6efd877d | 365 | {"text", s_text, 0}, |
6ef37255 KR |
366 | |
367 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
368 | won't be able to use it for a while -- probably a year or more. | |
369 | But once this has been released, check with gcc maintainers | |
370 | before deleting it or even changing the spelling. */ | |
371 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
372 | /* If we're folding case -- done for some targets, not necessarily | |
373 | all -- the above string in an input file will be converted to | |
374 | this one. Match it either way... */ | |
375 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
376 | ||
6efd877d | 377 | {"title", listing_title, 0}, /* Listing title */ |
e14994d9 | 378 | {"ttl", listing_title, 0}, |
f8701a3f SC |
379 | /* type */ |
380 | /* use */ | |
381 | /* val */ | |
e14994d9 | 382 | {"xcom", s_comm, 0}, |
1356d77d | 383 | {"xdef", s_globl, 0}, |
e14994d9 | 384 | {"xref", s_ignore, 0}, |
4064305e | 385 | {"xstabs", s_xstab, 's'}, |
6efd877d | 386 | {"word", cons, 2}, |
c02fd8dc | 387 | {"zero", s_space, 0}, |
6efd877d | 388 | {NULL} /* end sentinel */ |
fecd2382 RP |
389 | }; |
390 | ||
2209b19c KR |
391 | static int pop_override_ok = 0; |
392 | static const char *pop_table_name; | |
393 | ||
394 | void | |
395 | pop_insert (table) | |
396 | const pseudo_typeS *table; | |
6efd877d | 397 | { |
2209b19c | 398 | const char *errtxt; |
6efd877d | 399 | const pseudo_typeS *pop; |
2209b19c KR |
400 | for (pop = table; pop->poc_name; pop++) |
401 | { | |
402 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
403 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
6594d6b9 KR |
404 | as_fatal ("error constructing %s pseudo-op table: %s", pop_table_name, |
405 | errtxt); | |
2209b19c KR |
406 | } |
407 | } | |
6efd877d | 408 | |
2209b19c KR |
409 | #ifndef md_pop_insert |
410 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
411 | #endif | |
412 | ||
413 | #ifndef obj_pop_insert | |
414 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
415 | #endif | |
416 | ||
417 | static void | |
418 | pobegin () | |
419 | { | |
6efd877d KR |
420 | po_hash = hash_new (); |
421 | ||
422 | /* Do the target-specific pseudo ops. */ | |
2209b19c KR |
423 | pop_table_name = "md"; |
424 | md_pop_insert (); | |
6efd877d KR |
425 | |
426 | /* Now object specific. Skip any that were in the target table. */ | |
2209b19c KR |
427 | pop_table_name = "obj"; |
428 | pop_override_ok = 1; | |
429 | obj_pop_insert (); | |
6efd877d KR |
430 | |
431 | /* Now portable ones. Skip any that we've seen already. */ | |
2209b19c KR |
432 | pop_table_name = "standard"; |
433 | pop_insert (potable); | |
434 | } | |
fecd2382 | 435 | \f |
58d4951d ILT |
436 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ |
437 | if (ignore_input ()) \ | |
438 | { \ | |
439 | while (! is_end_of_line[(unsigned char) *input_line_pointer++]) \ | |
440 | if (input_line_pointer == buffer_limit) \ | |
441 | break; \ | |
442 | continue; \ | |
f8701a3f | 443 | } |
a39116f1 | 444 | |
fecd2382 | 445 | |
86038ada ILT |
446 | /* This function is used when scrubbing the characters between #APP |
447 | and #NO_APP. */ | |
448 | ||
449 | static char *scrub_string; | |
450 | static char *scrub_string_end; | |
451 | ||
452 | static int | |
453 | scrub_from_string (from) | |
454 | char **from; | |
455 | { | |
456 | int size; | |
457 | ||
458 | *from = scrub_string; | |
459 | size = scrub_string_end - scrub_string; | |
460 | scrub_string = scrub_string_end; | |
461 | return size; | |
462 | } | |
463 | ||
fecd2382 RP |
464 | /* read_a_source_file() |
465 | * | |
466 | * We read the file, putting things into a web that | |
467 | * represents what we have been reading. | |
468 | */ | |
6efd877d KR |
469 | void |
470 | read_a_source_file (name) | |
471 | char *name; | |
fecd2382 | 472 | { |
f8701a3f | 473 | register char c; |
6efd877d | 474 | register char *s; /* string of symbol, '\0' appended */ |
f8701a3f | 475 | register int temp; |
6efd877d | 476 | pseudo_typeS *pop; |
f8701a3f | 477 | |
6efd877d | 478 | buffer = input_scrub_new_file (name); |
f8701a3f | 479 | |
6efd877d KR |
480 | listing_file (name); |
481 | listing_newline (""); | |
f8701a3f | 482 | |
6efd877d KR |
483 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) |
484 | { /* We have another line to parse. */ | |
485 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
9471a360 KR |
486 | contin: /* JF this goto is my fault I admit it. |
487 | Someone brave please re-write the whole | |
488 | input section here? Pleeze??? */ | |
6efd877d | 489 | while (input_line_pointer < buffer_limit) |
9471a360 KR |
490 | { |
491 | /* We have more of this buffer to parse. */ | |
f8701a3f SC |
492 | |
493 | /* | |
494 | * We now have input_line_pointer->1st char of next line. | |
495 | * If input_line_pointer [-1] == '\n' then we just | |
496 | * scanned another line: so bump line counters. | |
497 | */ | |
d2550c72 | 498 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
6efd877d | 499 | { |
a2a5a4fa KR |
500 | #ifdef md_start_line_hook |
501 | md_start_line_hook (); | |
502 | #endif | |
503 | ||
385ce433 JL |
504 | if (input_line_pointer[-1] == '\n') |
505 | bump_line_counters (); | |
f8701a3f | 506 | |
7e047ac2 ILT |
507 | line_label = NULL; |
508 | ||
1356d77d ILT |
509 | if (flag_mri |
510 | #ifdef LABELS_WITHOUT_COLONS | |
511 | || 1 | |
512 | #endif | |
513 | ) | |
6efd877d | 514 | { |
1356d77d ILT |
515 | /* Text at the start of a line must be a label, we |
516 | run down and stick a colon in. */ | |
517 | if (is_name_beginner (*input_line_pointer)) | |
518 | { | |
519 | char *line_start = input_line_pointer; | |
7e047ac2 ILT |
520 | char c; |
521 | ||
522 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1356d77d | 523 | |
7e047ac2 ILT |
524 | c = get_symbol_end (); |
525 | ||
526 | /* In MRI mode, the EQU pseudoop must be | |
527 | handled specially. */ | |
528 | if (flag_mri) | |
1356d77d | 529 | { |
7e047ac2 ILT |
530 | char *rest = input_line_pointer + 1; |
531 | ||
532 | if (*rest == ':') | |
533 | ++rest; | |
534 | if (*rest == ' ' || *rest == '\t') | |
535 | ++rest; | |
536 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
537 | || strncasecmp (rest, "SET", 3) == 0) | |
538 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1356d77d | 539 | { |
7e047ac2 ILT |
540 | input_line_pointer = rest + 3; |
541 | equals (line_start); | |
542 | continue; | |
1356d77d ILT |
543 | } |
544 | } | |
6efd877d | 545 | |
7e047ac2 ILT |
546 | line_label = colon (line_start); |
547 | ||
1356d77d ILT |
548 | *input_line_pointer = c; |
549 | if (c == ':') | |
550 | input_line_pointer++; | |
551 | } | |
6efd877d | 552 | } |
9471a360 | 553 | } |
f8701a3f | 554 | |
f8701a3f SC |
555 | /* |
556 | * We are at the begining of a line, or similar place. | |
557 | * We expect a well-formed assembler statement. | |
558 | * A "symbol-name:" is a statement. | |
559 | * | |
560 | * Depending on what compiler is used, the order of these tests | |
561 | * may vary to catch most common case 1st. | |
562 | * Each test is independent of all other tests at the (top) level. | |
563 | * PLEASE make a compiler that doesn't use this assembler. | |
564 | * It is crufty to waste a compiler's time encoding things for this | |
565 | * assembler, which then wastes more time decoding it. | |
566 | * (And communicating via (linear) files is silly! | |
567 | * If you must pass stuff, please pass a tree!) | |
568 | */ | |
9471a360 KR |
569 | if ((c = *input_line_pointer++) == '\t' |
570 | || c == ' ' | |
571 | || c == '\f' | |
572 | || c == 0) | |
6efd877d KR |
573 | { |
574 | c = *input_line_pointer++; | |
575 | } | |
576 | know (c != ' '); /* No further leading whitespace. */ | |
577 | LISTING_NEWLINE (); | |
f8701a3f SC |
578 | /* |
579 | * C is the 1st significant character. | |
580 | * Input_line_pointer points after that character. | |
581 | */ | |
6efd877d | 582 | if (is_name_beginner (c)) |
6ef37255 KR |
583 | { |
584 | /* want user-defined label or pseudo/opcode */ | |
6efd877d KR |
585 | HANDLE_CONDITIONAL_ASSEMBLY (); |
586 | ||
f8701a3f | 587 | s = --input_line_pointer; |
6efd877d | 588 | c = get_symbol_end (); /* name's delimiter */ |
f8701a3f SC |
589 | /* |
590 | * C is character after symbol. | |
591 | * That character's place in the input line is now '\0'. | |
592 | * S points to the beginning of the symbol. | |
593 | * [In case of pseudo-op, s->'.'.] | |
594 | * Input_line_pointer->'\0' where c was. | |
595 | */ | |
9a7d824a | 596 | if (TC_START_LABEL(c, input_line_pointer)) |
6efd877d | 597 | { |
7e047ac2 ILT |
598 | if (flag_mri) |
599 | { | |
600 | char *rest = input_line_pointer + 1; | |
601 | ||
602 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
603 | ||
604 | if (*rest == ':') | |
605 | ++rest; | |
606 | if (*rest == ' ' || *rest == '\t') | |
607 | ++rest; | |
608 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
609 | || strncasecmp (rest, "SET", 3) == 0) | |
610 | && (rest[3] == ' ' || rest[3] == '\t')) | |
611 | { | |
612 | input_line_pointer = rest + 3; | |
613 | equals (s); | |
614 | continue; | |
615 | } | |
616 | } | |
617 | ||
618 | line_label = colon (s); /* user-defined label */ | |
6efd877d | 619 | *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */ |
f8701a3f | 620 | /* Input_line_pointer->after ':'. */ |
6efd877d KR |
621 | SKIP_WHITESPACE (); |
622 | ||
f8701a3f | 623 | |
6efd877d | 624 | } |
4064305e SS |
625 | else if (c == '=' |
626 | || (input_line_pointer[1] == '=' | |
627 | #ifdef TC_EQUAL_IN_INSN | |
628 | && ! TC_EQUAL_IN_INSN (c, input_line_pointer) | |
629 | #endif | |
630 | )) | |
9c6d3f66 | 631 | { |
6efd877d KR |
632 | equals (s); |
633 | demand_empty_rest_of_line (); | |
634 | } | |
635 | else | |
636 | { /* expect pseudo-op or machine instruction */ | |
8ff6f40e ILT |
637 | pop = NULL; |
638 | ||
d4c8cbd8 JL |
639 | #define IGNORE_OPCODE_CASE |
640 | #ifdef IGNORE_OPCODE_CASE | |
641 | { | |
642 | char *s2 = s; | |
643 | while (*s2) | |
644 | { | |
645 | if (isupper (*s2)) | |
646 | *s2 = tolower (*s2); | |
647 | s2++; | |
648 | } | |
649 | } | |
650 | #endif | |
651 | ||
42ac8fa8 ILT |
652 | #ifndef MRI_MODE_NEEDS_PSEUDO_DOT |
653 | #define MRI_MODE_NEEDS_PSEUDO_DOT 0 | |
654 | #endif | |
655 | ||
656 | if ((flag_mri && ! MRI_MODE_NEEDS_PSEUDO_DOT) | |
8ff6f40e | 657 | #ifdef NO_PSEUDO_DOT |
1356d77d | 658 | || 1 |
8ff6f40e | 659 | #endif |
1356d77d ILT |
660 | ) |
661 | { | |
662 | /* The MRI assembler and the m88k use pseudo-ops | |
663 | without a period. */ | |
664 | pop = (pseudo_typeS *) hash_find (po_hash, s); | |
665 | if (pop != NULL && pop->poc_handler == NULL) | |
666 | pop = NULL; | |
667 | } | |
8ff6f40e | 668 | |
7e047ac2 | 669 | if (pop != NULL |
42ac8fa8 ILT |
670 | || ((! flag_mri || MRI_MODE_NEEDS_PSEUDO_DOT) |
671 | && *s == '.')) | |
6efd877d KR |
672 | { |
673 | /* | |
9471a360 KR |
674 | * PSEUDO - OP. |
675 | * | |
676 | * WARNING: c has next char, which may be end-of-line. | |
677 | * We lookup the pseudo-op table with s+1 because we | |
678 | * already know that the pseudo-op begins with a '.'. | |
679 | */ | |
6efd877d | 680 | |
8ff6f40e ILT |
681 | if (pop == NULL) |
682 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
6efd877d | 683 | |
286cb27a ILT |
684 | /* In MRI mode, we may need to insert an |
685 | automatic alignment directive. What a hack | |
686 | this is. */ | |
687 | if (mri_pending_align | |
688 | && (pop == NULL | |
689 | || ! ((pop->poc_handler == cons | |
690 | && pop->poc_val == 1) | |
691 | || (pop->poc_handler == s_space | |
692 | && pop->poc_val == 1)))) | |
693 | { | |
694 | do_align (1, (char *) NULL); | |
695 | mri_pending_align = 0; | |
696 | } | |
697 | ||
6efd877d | 698 | /* Print the error msg now, while we still can */ |
8ff6f40e | 699 | if (pop == NULL) |
6efd877d KR |
700 | { |
701 | as_bad ("Unknown pseudo-op: `%s'", s); | |
f8701a3f | 702 | *input_line_pointer = c; |
6efd877d | 703 | s_ignore (0); |
46b81190 | 704 | continue; |
6efd877d KR |
705 | } |
706 | ||
707 | /* Put it back for error messages etc. */ | |
708 | *input_line_pointer = c; | |
9c6d3f66 KR |
709 | /* The following skip of whitespace is compulsory. |
710 | A well shaped space is sometimes all that separates | |
711 | keyword from operands. */ | |
6efd877d | 712 | if (c == ' ' || c == '\t') |
d4c8cbd8 | 713 | input_line_pointer++; |
6efd877d | 714 | /* |
9471a360 KR |
715 | * Input_line is restored. |
716 | * Input_line_pointer->1st non-blank char | |
717 | * after pseudo-operation. | |
718 | */ | |
46b81190 | 719 | (*pop->poc_handler) (pop->poc_val); |
e28c40d7 ILT |
720 | |
721 | /* If that was .end, just get out now. */ | |
722 | if (pop->poc_handler == s_end) | |
723 | goto quit; | |
6efd877d KR |
724 | } |
725 | else | |
6efd877d | 726 | { /* machine instruction */ |
4026c122 ILT |
727 | int inquote = 0; |
728 | ||
286cb27a ILT |
729 | if (mri_pending_align) |
730 | { | |
731 | do_align (1, (char *) NULL); | |
732 | mri_pending_align = 0; | |
733 | } | |
734 | ||
6efd877d KR |
735 | /* WARNING: c has char, which may be end-of-line. */ |
736 | /* Also: input_line_pointer->`\0` where c was. */ | |
737 | *input_line_pointer = c; | |
58d4951d | 738 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
4026c122 | 739 | || inquote |
4064305e SS |
740 | #ifdef TC_EOL_IN_INSN |
741 | || TC_EOL_IN_INSN (input_line_pointer) | |
742 | #endif | |
743 | ) | |
6efd877d | 744 | { |
4026c122 ILT |
745 | if (flag_mri && *input_line_pointer == '\'') |
746 | inquote = ! inquote; | |
6efd877d KR |
747 | input_line_pointer++; |
748 | } | |
f8701a3f | 749 | |
6efd877d KR |
750 | c = *input_line_pointer; |
751 | *input_line_pointer = '\0'; | |
f8701a3f | 752 | |
326d16ca KH |
753 | #ifdef OBJ_GENERATE_ASM_LINENO |
754 | if (generate_asm_lineno == 0) | |
755 | { | |
f10a96cb | 756 | if (ecoff_no_current_file ()) |
326d16ca KH |
757 | generate_asm_lineno = 1; |
758 | } | |
f10a96cb ILT |
759 | if (generate_asm_lineno == 1) |
760 | { | |
1b434ced ILT |
761 | unsigned int lineno; |
762 | char *s; | |
763 | ||
daad3bbf | 764 | as_where (&s, &lineno); |
326d16ca | 765 | OBJ_GENERATE_ASM_LINENO (s, lineno); |
f10a96cb | 766 | } |
daad3bbf KH |
767 | #endif |
768 | ||
7e047ac2 ILT |
769 | if (macro_defined) |
770 | { | |
771 | sb out; | |
772 | const char *err; | |
773 | ||
774 | if (check_macro (s, &out, '\0', &err)) | |
775 | { | |
776 | if (err != NULL) | |
777 | as_bad (err); | |
778 | *input_line_pointer++ = c; | |
779 | input_scrub_include_sb (&out, | |
780 | input_line_pointer); | |
781 | sb_kill (&out); | |
782 | buffer_limit = | |
783 | input_scrub_next_buffer (&input_line_pointer); | |
784 | continue; | |
785 | } | |
786 | } | |
787 | ||
6efd877d | 788 | md_assemble (s); /* Assemble 1 instruction. */ |
f8701a3f | 789 | |
6efd877d | 790 | *input_line_pointer++ = c; |
f8701a3f | 791 | |
d4c8cbd8 JL |
792 | /* We resume loop AFTER the end-of-line from |
793 | this instruction. */ | |
6efd877d | 794 | } /* if (*s=='.') */ |
6efd877d | 795 | } /* if c==':' */ |
f8701a3f | 796 | continue; |
6efd877d | 797 | } /* if (is_name_beginner(c) */ |
f8701a3f | 798 | |
f8701a3f | 799 | |
d4c8cbd8 | 800 | /* Empty statement? */ |
58d4951d | 801 | if (is_end_of_line[(unsigned char) c]) |
d4c8cbd8 | 802 | continue; |
6efd877d | 803 | |
9777b772 KR |
804 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) |
805 | && isdigit (c)) | |
d4c8cbd8 JL |
806 | { |
807 | /* local label ("4:") */ | |
6efd877d KR |
808 | char *backup = input_line_pointer; |
809 | ||
810 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
811 | ||
812 | temp = c - '0'; | |
813 | ||
814 | while (isdigit (*input_line_pointer)) | |
815 | { | |
816 | temp = (temp * 10) + *input_line_pointer - '0'; | |
817 | ++input_line_pointer; | |
818 | } /* read the whole number */ | |
819 | ||
9777b772 KR |
820 | if (LOCAL_LABELS_DOLLAR |
821 | && *input_line_pointer == '$' | |
6efd877d KR |
822 | && *(input_line_pointer + 1) == ':') |
823 | { | |
824 | input_line_pointer += 2; | |
825 | ||
826 | if (dollar_label_defined (temp)) | |
827 | { | |
828 | as_fatal ("label \"%d$\" redefined", temp); | |
829 | } | |
830 | ||
831 | define_dollar_label (temp); | |
832 | colon (dollar_label_name (temp, 0)); | |
833 | continue; | |
834 | } | |
6efd877d | 835 | |
9777b772 KR |
836 | if (LOCAL_LABELS_FB |
837 | && *input_line_pointer++ == ':') | |
6efd877d KR |
838 | { |
839 | fb_label_instance_inc (temp); | |
840 | colon (fb_label_name (temp, 0)); | |
841 | continue; | |
842 | } | |
6efd877d KR |
843 | |
844 | input_line_pointer = backup; | |
845 | } /* local label ("4:") */ | |
f8701a3f | 846 | |
6efd877d KR |
847 | if (c && strchr (line_comment_chars, c)) |
848 | { /* Its a comment. Better say APP or NO_APP */ | |
f8701a3f SC |
849 | char *ends; |
850 | char *new_buf; | |
851 | char *new_tmp; | |
604633ae | 852 | unsigned int new_length; |
f8701a3f | 853 | char *tmp_buf = 0; |
6efd877d KR |
854 | |
855 | bump_line_counters (); | |
856 | s = input_line_pointer; | |
857 | if (strncmp (s, "APP\n", 4)) | |
858 | continue; /* We ignore it */ | |
859 | s += 4; | |
860 | ||
861 | ends = strstr (s, "#NO_APP\n"); | |
862 | ||
863 | if (!ends) | |
864 | { | |
604633ae ILT |
865 | unsigned int tmp_len; |
866 | unsigned int num; | |
6efd877d | 867 | |
f8701a3f SC |
868 | /* The end of the #APP wasn't in this buffer. We |
869 | keep reading in buffers until we find the #NO_APP | |
870 | that goes with this #APP There is one. The specs | |
871 | guarentee it. . . */ | |
6efd877d | 872 | tmp_len = buffer_limit - s; |
85825401 | 873 | tmp_buf = xmalloc (tmp_len + 1); |
4380166d | 874 | memcpy (tmp_buf, s, tmp_len); |
6efd877d KR |
875 | do |
876 | { | |
877 | new_tmp = input_scrub_next_buffer (&buffer); | |
f8701a3f | 878 | if (!new_tmp) |
6efd877d | 879 | break; |
f8701a3f | 880 | else |
6efd877d | 881 | buffer_limit = new_tmp; |
f8701a3f | 882 | input_line_pointer = buffer; |
6efd877d | 883 | ends = strstr (buffer, "#NO_APP\n"); |
f8701a3f | 884 | if (ends) |
6efd877d | 885 | num = ends - buffer; |
f8701a3f | 886 | else |
6efd877d KR |
887 | num = buffer_limit - buffer; |
888 | ||
889 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
9eb5f4b8 | 890 | memcpy (tmp_buf + tmp_len, buffer, num); |
6efd877d KR |
891 | tmp_len += num; |
892 | } | |
893 | while (!ends); | |
894 | ||
895 | input_line_pointer = ends ? ends + 8 : NULL; | |
896 | ||
897 | s = tmp_buf; | |
898 | ends = s + tmp_len; | |
899 | ||
900 | } | |
901 | else | |
902 | { | |
903 | input_line_pointer = ends + 8; | |
904 | } | |
6efd877d KR |
905 | |
906 | scrub_string = s; | |
86038ada ILT |
907 | scrub_string_end = ends; |
908 | ||
909 | new_length = ends - s; | |
910 | new_buf = (char *) xmalloc (new_length); | |
911 | new_tmp = new_buf; | |
6efd877d KR |
912 | for (;;) |
913 | { | |
86038ada ILT |
914 | int space; |
915 | int size; | |
f8701a3f | 916 | |
86038ada ILT |
917 | space = (new_buf + new_length) - new_tmp; |
918 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
919 | ||
920 | if (size < space) | |
6efd877d | 921 | { |
86038ada ILT |
922 | new_tmp += size; |
923 | break; | |
f8701a3f | 924 | } |
86038ada ILT |
925 | |
926 | new_buf = xrealloc (new_buf, new_length + 100); | |
927 | new_tmp = new_buf + new_length; | |
928 | new_length += 100; | |
fecd2382 | 929 | } |
f8701a3f SC |
930 | |
931 | if (tmp_buf) | |
6efd877d KR |
932 | free (tmp_buf); |
933 | old_buffer = buffer; | |
934 | old_input = input_line_pointer; | |
935 | old_limit = buffer_limit; | |
936 | buffer = new_buf; | |
937 | input_line_pointer = new_buf; | |
938 | buffer_limit = new_tmp; | |
f8701a3f SC |
939 | continue; |
940 | } | |
941 | ||
6efd877d | 942 | HANDLE_CONDITIONAL_ASSEMBLY (); |
f8701a3f SC |
943 | |
944 | /* as_warn("Junk character %d.",c); Now done by ignore_rest */ | |
945 | input_line_pointer--; /* Report unknown char as ignored. */ | |
6efd877d KR |
946 | ignore_rest_of_line (); |
947 | } /* while (input_line_pointer<buffer_limit) */ | |
a2a5a4fa KR |
948 | |
949 | #ifdef md_after_pass_hook | |
950 | md_after_pass_hook (); | |
951 | #endif | |
952 | ||
6efd877d KR |
953 | if (old_buffer) |
954 | { | |
86038ada | 955 | free (buffer); |
6efd877d KR |
956 | bump_line_counters (); |
957 | if (old_input != 0) | |
958 | { | |
959 | buffer = old_buffer; | |
960 | input_line_pointer = old_input; | |
961 | buffer_limit = old_limit; | |
f8701a3f SC |
962 | old_buffer = 0; |
963 | goto contin; | |
964 | } | |
965 | } | |
6efd877d | 966 | } /* while (more buffers to scan) */ |
f8701a3f | 967 | |
e28c40d7 ILT |
968 | quit: |
969 | input_scrub_close (); /* Close the input file */ | |
4075afe1 | 970 | } |
fecd2382 | 971 | |
18c9057f ILT |
972 | /* For most MRI pseudo-ops, the line actually ends at the first |
973 | nonquoted space. This function looks for that point, stuffs a null | |
974 | in, and sets *STOPCP to the character that used to be there, and | |
42ac8fa8 ILT |
975 | returns the location. |
976 | ||
977 | Until I hear otherwise, I am going to assume that this is only true | |
978 | for the m68k MRI assembler. */ | |
18c9057f ILT |
979 | |
980 | char * | |
981 | mri_comment_field (stopcp) | |
982 | char *stopcp; | |
983 | { | |
42ac8fa8 ILT |
984 | #ifdef TC_M68K |
985 | ||
18c9057f ILT |
986 | char *s; |
987 | int inquote = 0; | |
988 | ||
989 | know (flag_mri); | |
990 | ||
991 | for (s = input_line_pointer; | |
992 | ((! is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') | |
993 | || inquote); | |
994 | s++) | |
995 | { | |
996 | if (*s == '\'') | |
997 | inquote = ! inquote; | |
998 | } | |
999 | *stopcp = *s; | |
1000 | *s = '\0'; | |
1001 | return s; | |
42ac8fa8 ILT |
1002 | |
1003 | #else | |
1004 | ||
1005 | char *s; | |
1006 | ||
1007 | for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++) | |
1008 | ; | |
1009 | *stopcp = *s; | |
1010 | *s = '\0'; | |
1011 | return s; | |
1012 | ||
1013 | #endif | |
1014 | ||
18c9057f ILT |
1015 | } |
1016 | ||
1017 | /* Skip to the end of an MRI comment field. */ | |
1018 | ||
1019 | void | |
1020 | mri_comment_end (stop, stopc) | |
1021 | char *stop; | |
1022 | int stopc; | |
1023 | { | |
1024 | know (flag_mri); | |
1025 | ||
1026 | input_line_pointer = stop; | |
1027 | *stop = stopc; | |
1028 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1029 | ++input_line_pointer; | |
1030 | } | |
1031 | ||
6efd877d | 1032 | void |
604633ae ILT |
1033 | s_abort (ignore) |
1034 | int ignore; | |
6efd877d KR |
1035 | { |
1036 | as_fatal (".abort detected. Abandoning ship."); | |
4075afe1 KR |
1037 | } |
1038 | ||
1039 | /* Guts of .align directive. */ | |
1040 | static void | |
1041 | do_align (n, fill) | |
1042 | int n; | |
1043 | char *fill; | |
1044 | { | |
1045 | #ifdef md_do_align | |
1046 | md_do_align (n, fill, just_record_alignment); | |
1047 | #endif | |
1048 | if (!fill) | |
1049 | { | |
1050 | /* @@ Fix this right for BFD! */ | |
1051 | static char zero; | |
1052 | static char nop_opcode = NOP_OPCODE; | |
1053 | ||
1054 | if (now_seg != data_section && now_seg != bss_section) | |
1055 | { | |
1056 | fill = &nop_opcode; | |
1057 | } | |
1058 | else | |
1059 | { | |
1060 | fill = &zero; | |
1061 | } | |
1062 | } | |
1063 | /* Only make a frag if we HAVE to. . . */ | |
1064 | if (n && !need_pass_2) | |
1065 | frag_align (n, *fill); | |
1066 | ||
c02fd8dc | 1067 | #ifdef md_do_align |
4075afe1 | 1068 | just_record_alignment: |
c02fd8dc ILT |
1069 | #endif |
1070 | ||
4075afe1 KR |
1071 | record_alignment (now_seg, n); |
1072 | } | |
fecd2382 RP |
1073 | |
1074 | /* For machines where ".align 4" means align to a 4 byte boundary. */ | |
6efd877d KR |
1075 | void |
1076 | s_align_bytes (arg) | |
1077 | int arg; | |
fecd2382 | 1078 | { |
6efd877d | 1079 | register unsigned int temp; |
4075afe1 | 1080 | char temp_fill; |
6efd877d KR |
1081 | unsigned int i = 0; |
1082 | unsigned long max_alignment = 1 << 15; | |
18c9057f ILT |
1083 | char *stop = NULL; |
1084 | char stopc; | |
1085 | ||
1086 | if (flag_mri) | |
1087 | stop = mri_comment_field (&stopc); | |
f8701a3f | 1088 | |
58d4951d | 1089 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
1090 | temp = arg; /* Default value from pseudo-op table */ |
1091 | else | |
1092 | temp = get_absolute_expression (); | |
f8701a3f | 1093 | |
6efd877d KR |
1094 | if (temp > max_alignment) |
1095 | { | |
1096 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
f8701a3f SC |
1097 | } |
1098 | ||
4075afe1 KR |
1099 | /* For the sparc, `.align (1<<n)' actually means `.align n' so we |
1100 | have to convert it. */ | |
6efd877d KR |
1101 | if (temp != 0) |
1102 | { | |
1103 | for (i = 0; (temp & 1) == 0; temp >>= 1, ++i) | |
1104 | ; | |
f8701a3f | 1105 | } |
6efd877d KR |
1106 | if (temp != 1) |
1107 | as_bad ("Alignment not a power of 2"); | |
f8701a3f | 1108 | |
6efd877d KR |
1109 | temp = i; |
1110 | if (*input_line_pointer == ',') | |
1111 | { | |
1112 | input_line_pointer++; | |
1113 | temp_fill = get_absolute_expression (); | |
4075afe1 | 1114 | do_align (temp, &temp_fill); |
f8701a3f | 1115 | } |
6efd877d | 1116 | else |
4075afe1 | 1117 | do_align (temp, (char *) 0); |
49864cfa | 1118 | |
18c9057f ILT |
1119 | if (flag_mri) |
1120 | mri_comment_end (stop, stopc); | |
1121 | ||
6efd877d | 1122 | demand_empty_rest_of_line (); |
4075afe1 | 1123 | } |
fecd2382 RP |
1124 | |
1125 | /* For machines where ".align 4" means align to 2**4 boundary. */ | |
6efd877d | 1126 | void |
604633ae ILT |
1127 | s_align_ptwo (ignore) |
1128 | int ignore; | |
6efd877d KR |
1129 | { |
1130 | register int temp; | |
4075afe1 | 1131 | char temp_fill; |
6efd877d | 1132 | long max_alignment = 15; |
18c9057f ILT |
1133 | char *stop = NULL; |
1134 | char stopc; | |
1135 | ||
1136 | if (flag_mri) | |
1137 | stop = mri_comment_field (&stopc); | |
6efd877d KR |
1138 | |
1139 | temp = get_absolute_expression (); | |
1140 | if (temp > max_alignment) | |
1141 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
1142 | else if (temp < 0) | |
1143 | { | |
1144 | as_bad ("Alignment negative. 0 assumed."); | |
1145 | temp = 0; | |
1146 | } | |
1147 | if (*input_line_pointer == ',') | |
1148 | { | |
1149 | input_line_pointer++; | |
1150 | temp_fill = get_absolute_expression (); | |
4075afe1 | 1151 | do_align (temp, &temp_fill); |
6efd877d KR |
1152 | } |
1153 | else | |
4075afe1 | 1154 | do_align (temp, (char *) 0); |
6efd877d | 1155 | |
18c9057f ILT |
1156 | if (flag_mri) |
1157 | mri_comment_end (stop, stopc); | |
1158 | ||
6efd877d | 1159 | demand_empty_rest_of_line (); |
4075afe1 | 1160 | } |
6efd877d KR |
1161 | |
1162 | void | |
604633ae ILT |
1163 | s_comm (ignore) |
1164 | int ignore; | |
6efd877d KR |
1165 | { |
1166 | register char *name; | |
1167 | register char c; | |
1168 | register char *p; | |
58d4951d | 1169 | offsetT temp; |
6efd877d | 1170 | register symbolS *symbolP; |
18c9057f ILT |
1171 | char *stop = NULL; |
1172 | char stopc; | |
1173 | ||
1174 | if (flag_mri) | |
1175 | stop = mri_comment_field (&stopc); | |
6efd877d KR |
1176 | |
1177 | name = input_line_pointer; | |
1178 | c = get_symbol_end (); | |
1179 | /* just after name is now '\0' */ | |
1180 | p = input_line_pointer; | |
1181 | *p = c; | |
1182 | SKIP_WHITESPACE (); | |
1183 | if (*input_line_pointer != ',') | |
1184 | { | |
1185 | as_bad ("Expected comma after symbol-name: rest of line ignored."); | |
18c9057f ILT |
1186 | if (flag_mri) |
1187 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1188 | ignore_rest_of_line (); |
1189 | return; | |
1190 | } | |
1191 | input_line_pointer++; /* skip ',' */ | |
1192 | if ((temp = get_absolute_expression ()) < 0) | |
1193 | { | |
58d4951d | 1194 | as_warn (".COMMon length (%ld.) <0! Ignored.", (long) temp); |
18c9057f ILT |
1195 | if (flag_mri) |
1196 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1197 | ignore_rest_of_line (); |
1198 | return; | |
1199 | } | |
1200 | *p = 0; | |
1201 | symbolP = symbol_find_or_make (name); | |
1202 | *p = c; | |
1203 | if (S_IS_DEFINED (symbolP)) | |
1204 | { | |
6ef37255 KR |
1205 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
1206 | S_GET_NAME (symbolP)); | |
18c9057f ILT |
1207 | if (flag_mri) |
1208 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1209 | ignore_rest_of_line (); |
1210 | return; | |
1211 | } | |
1212 | if (S_GET_VALUE (symbolP)) | |
1213 | { | |
58d4951d ILT |
1214 | if (S_GET_VALUE (symbolP) != (valueT) temp) |
1215 | as_bad ("Length of .comm \"%s\" is already %ld. Not changed to %ld.", | |
6efd877d | 1216 | S_GET_NAME (symbolP), |
58d4951d ILT |
1217 | (long) S_GET_VALUE (symbolP), |
1218 | (long) temp); | |
6efd877d KR |
1219 | } |
1220 | else | |
1221 | { | |
58d4951d | 1222 | S_SET_VALUE (symbolP, (valueT) temp); |
6efd877d KR |
1223 | S_SET_EXTERNAL (symbolP); |
1224 | } | |
9471a360 | 1225 | #ifdef OBJ_VMS |
def66e24 DM |
1226 | { |
1227 | extern int flag_one; | |
1228 | if ( (!temp) || !flag_one) | |
1229 | S_GET_OTHER(symbolP) = const_flag; | |
1230 | } | |
9471a360 | 1231 | #endif /* not OBJ_VMS */ |
6efd877d | 1232 | know (symbolP->sy_frag == &zero_address_frag); |
18c9057f ILT |
1233 | |
1234 | if (flag_mri) | |
1235 | mri_comment_end (stop, stopc); | |
1236 | ||
6efd877d KR |
1237 | demand_empty_rest_of_line (); |
1238 | } /* s_comm() */ | |
fecd2382 | 1239 | |
1356d77d ILT |
1240 | /* The MRI COMMON pseudo-op. We handle this by creating a common |
1241 | symbol with the appropriate name. We make s_space do the right | |
1242 | thing by increasing the size. */ | |
1243 | ||
1244 | void | |
1245 | s_mri_common (small) | |
1246 | int small; | |
1247 | { | |
1248 | char *name; | |
1249 | char c; | |
1250 | char *alc = NULL; | |
1251 | symbolS *sym; | |
1252 | offsetT align; | |
18c9057f ILT |
1253 | char *stop = NULL; |
1254 | char stopc; | |
1356d77d ILT |
1255 | |
1256 | if (! flag_mri) | |
1257 | { | |
1258 | s_comm (0); | |
1259 | return; | |
1260 | } | |
1261 | ||
18c9057f ILT |
1262 | stop = mri_comment_field (&stopc); |
1263 | ||
1356d77d ILT |
1264 | SKIP_WHITESPACE (); |
1265 | ||
1266 | name = input_line_pointer; | |
1267 | if (! isdigit ((unsigned char) *name)) | |
1268 | c = get_symbol_end (); | |
1269 | else | |
1270 | { | |
1271 | do | |
1272 | { | |
1273 | ++input_line_pointer; | |
1274 | } | |
1275 | while (isdigit ((unsigned char) *input_line_pointer)); | |
1276 | c = *input_line_pointer; | |
1277 | *input_line_pointer = '\0'; | |
1278 | ||
7e047ac2 | 1279 | if (line_label != NULL) |
1356d77d | 1280 | { |
7e047ac2 | 1281 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) |
1356d77d ILT |
1282 | + (input_line_pointer - name) |
1283 | + 1); | |
7e047ac2 | 1284 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); |
1356d77d ILT |
1285 | name = alc; |
1286 | } | |
1287 | } | |
1288 | ||
1289 | sym = symbol_find_or_make (name); | |
1290 | *input_line_pointer = c; | |
1291 | if (alc != NULL) | |
1292 | free (alc); | |
1293 | ||
1294 | if (*input_line_pointer != ',') | |
1295 | align = 0; | |
1296 | else | |
1297 | { | |
1298 | ++input_line_pointer; | |
1299 | align = get_absolute_expression (); | |
1300 | } | |
1301 | ||
1302 | if (S_IS_DEFINED (sym)) | |
1303 | { | |
1304 | #if defined (S_IS_COMMON) || defined (BFD_ASSEMBLER) | |
1305 | if (! S_IS_COMMON (sym)) | |
1306 | #endif | |
1307 | { | |
1308 | as_bad ("attempt to re-define symbol `%s'", S_GET_NAME (sym)); | |
18c9057f | 1309 | mri_comment_end (stop, stopc); |
1356d77d ILT |
1310 | ignore_rest_of_line (); |
1311 | return; | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | S_SET_EXTERNAL (sym); | |
1316 | mri_common_symbol = sym; | |
1317 | ||
1318 | #ifdef S_SET_ALIGN | |
1319 | if (align != 0) | |
1320 | S_SET_ALIGN (sym, align); | |
1321 | #endif | |
1322 | ||
7e047ac2 | 1323 | if (line_label != NULL) |
1356d77d | 1324 | { |
7e047ac2 ILT |
1325 | line_label->sy_value.X_op = O_symbol; |
1326 | line_label->sy_value.X_add_symbol = sym; | |
1327 | line_label->sy_value.X_add_number = S_GET_VALUE (sym); | |
1328 | line_label->sy_frag = &zero_address_frag; | |
1329 | S_SET_SEGMENT (line_label, expr_section); | |
1356d77d ILT |
1330 | } |
1331 | ||
1332 | /* FIXME: We just ignore the small argument, which distinguishes | |
1333 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1334 | ||
1335 | /* Ignore the type and hptype. */ | |
1336 | if (*input_line_pointer == ',') | |
1337 | input_line_pointer += 2; | |
1338 | if (*input_line_pointer == ',') | |
1339 | input_line_pointer += 2; | |
18c9057f ILT |
1340 | |
1341 | mri_comment_end (stop, stopc); | |
1342 | ||
1356d77d ILT |
1343 | demand_empty_rest_of_line (); |
1344 | } | |
1345 | ||
fecd2382 | 1346 | void |
604633ae ILT |
1347 | s_data (ignore) |
1348 | int ignore; | |
fecd2382 | 1349 | { |
ffffc8fb | 1350 | segT section; |
6efd877d | 1351 | register int temp; |
f8701a3f | 1352 | |
6efd877d | 1353 | temp = get_absolute_expression (); |
def66e24 | 1354 | if (flag_readonly_data_in_text) |
ffffc8fb ILT |
1355 | { |
1356 | section = text_section; | |
1357 | temp += 1000; | |
1358 | } | |
1359 | else | |
1360 | section = data_section; | |
1361 | ||
ffffc8fb | 1362 | subseg_set (section, (subsegT) temp); |
f8701a3f | 1363 | |
9471a360 | 1364 | #ifdef OBJ_VMS |
6efd877d | 1365 | const_flag = 0; |
fecd2382 | 1366 | #endif |
6efd877d | 1367 | demand_empty_rest_of_line (); |
fecd2382 RP |
1368 | } |
1369 | ||
9a7d824a | 1370 | /* Handle the .appfile pseudo-op. This is automatically generated by |
86038ada ILT |
1371 | do_scrub_chars when a preprocessor # line comment is seen with a |
1372 | file name. This default definition may be overridden by the object | |
1373 | or CPU specific pseudo-ops. This function is also the default | |
1374 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1375 | .file. */ | |
9a7d824a | 1376 | |
6efd877d | 1377 | void |
9a7d824a ILT |
1378 | s_app_file (appfile) |
1379 | int appfile; | |
6efd877d KR |
1380 | { |
1381 | register char *s; | |
1382 | int length; | |
f8701a3f | 1383 | |
6efd877d KR |
1384 | /* Some assemblers tolerate immediately following '"' */ |
1385 | if ((s = demand_copy_string (&length)) != 0) | |
1386 | { | |
9a7d824a ILT |
1387 | /* If this is a fake .appfile, a fake newline was inserted into |
1388 | the buffer. Passing -2 to new_logical_line tells it to | |
1389 | account for it. */ | |
1390 | new_logical_line (s, appfile ? -2 : -1); | |
6efd877d | 1391 | demand_empty_rest_of_line (); |
9a7d824a ILT |
1392 | #ifdef LISTING |
1393 | if (listing) | |
1394 | listing_source_file (s); | |
1395 | #endif | |
6efd877d | 1396 | } |
2209b19c KR |
1397 | #ifdef obj_app_file |
1398 | obj_app_file (s); | |
40324362 KR |
1399 | #endif |
1400 | } | |
fecd2382 | 1401 | |
9a7d824a | 1402 | /* Handle the .appline pseudo-op. This is automatically generated by |
86038ada ILT |
1403 | do_scrub_chars when a preprocessor # line comment is seen. This |
1404 | default definition may be overridden by the object or CPU specific | |
1405 | pseudo-ops. */ | |
9a7d824a ILT |
1406 | |
1407 | void | |
604633ae ILT |
1408 | s_app_line (ignore) |
1409 | int ignore; | |
9a7d824a ILT |
1410 | { |
1411 | int l; | |
1412 | ||
1413 | /* The given number is that of the next line. */ | |
1414 | l = get_absolute_expression () - 1; | |
931a8fab KR |
1415 | if (l < 0) |
1416 | /* Some of the back ends can't deal with non-positive line numbers. | |
1417 | Besides, it's silly. */ | |
1418 | as_warn ("Line numbers must be positive; line number %d rejected.", l+1); | |
1419 | else | |
1420 | { | |
1421 | new_logical_line ((char *) NULL, l); | |
9a7d824a | 1422 | #ifdef LISTING |
931a8fab KR |
1423 | if (listing) |
1424 | listing_source_line (l); | |
9a7d824a | 1425 | #endif |
931a8fab | 1426 | } |
9a7d824a ILT |
1427 | demand_empty_rest_of_line (); |
1428 | } | |
1429 | ||
e28c40d7 ILT |
1430 | /* Handle the .end pseudo-op. Actually, the real work is done in |
1431 | read_a_source_file. */ | |
1432 | ||
1433 | void | |
1434 | s_end (ignore) | |
1435 | int ignore; | |
1436 | { | |
1437 | if (flag_mri) | |
1438 | { | |
1439 | /* The MRI assembler permits the start symbol to follow .end, | |
1440 | but we don't support that. */ | |
1441 | SKIP_WHITESPACE (); | |
18c9057f ILT |
1442 | if (! is_end_of_line[(unsigned char) *input_line_pointer] |
1443 | && *input_line_pointer != '*' | |
1444 | && *input_line_pointer != '!') | |
e28c40d7 ILT |
1445 | as_warn ("start address not supported"); |
1446 | } | |
1447 | } | |
1448 | ||
42ac8fa8 ILT |
1449 | /* Handle the .err pseudo-op. */ |
1450 | ||
1451 | void | |
1452 | s_err (ignore) | |
1453 | int ignore; | |
1454 | { | |
1455 | as_bad (".err encountered"); | |
1456 | demand_empty_rest_of_line (); | |
1457 | } | |
1458 | ||
e28c40d7 ILT |
1459 | /* Handle the MRI fail pseudo-op. */ |
1460 | ||
1461 | void | |
1462 | s_fail (ignore) | |
1463 | int ignore; | |
1464 | { | |
1465 | offsetT temp; | |
18c9057f ILT |
1466 | char *stop = NULL; |
1467 | char stopc; | |
1468 | ||
1469 | if (flag_mri) | |
1470 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
1471 | |
1472 | temp = get_absolute_expression (); | |
1473 | if (temp >= 500) | |
1474 | as_warn (".fail %ld encountered", (long) temp); | |
1475 | else | |
1476 | as_bad (".fail %ld encountered", (long) temp); | |
18c9057f ILT |
1477 | |
1478 | if (flag_mri) | |
1479 | mri_comment_end (stop, stopc); | |
1480 | ||
e28c40d7 ILT |
1481 | demand_empty_rest_of_line (); |
1482 | } | |
1483 | ||
6efd877d | 1484 | void |
604633ae ILT |
1485 | s_fill (ignore) |
1486 | int ignore; | |
6efd877d KR |
1487 | { |
1488 | long temp_repeat = 0; | |
1489 | long temp_size = 1; | |
1490 | register long temp_fill = 0; | |
1491 | char *p; | |
f8701a3f | 1492 | |
624c91d1 KR |
1493 | #ifdef md_flush_pending_output |
1494 | md_flush_pending_output (); | |
1495 | #endif | |
7c2d4011 | 1496 | |
6efd877d KR |
1497 | temp_repeat = get_absolute_expression (); |
1498 | if (*input_line_pointer == ',') | |
1499 | { | |
1500 | input_line_pointer++; | |
1501 | temp_size = get_absolute_expression (); | |
1502 | if (*input_line_pointer == ',') | |
7c2d4011 SC |
1503 | { |
1504 | input_line_pointer++; | |
6efd877d | 1505 | temp_fill = get_absolute_expression (); |
fecd2382 | 1506 | } |
6efd877d | 1507 | } |
c8863a58 | 1508 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ |
fecd2382 | 1509 | #define BSD_FILL_SIZE_CROCK_8 (8) |
6efd877d KR |
1510 | if (temp_size > BSD_FILL_SIZE_CROCK_8) |
1511 | { | |
1512 | as_warn (".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8); | |
1513 | temp_size = BSD_FILL_SIZE_CROCK_8; | |
1514 | } | |
1515 | if (temp_size < 0) | |
1516 | { | |
1517 | as_warn ("Size negative: .fill ignored."); | |
1518 | temp_size = 0; | |
1519 | } | |
1520 | else if (temp_repeat <= 0) | |
1521 | { | |
1522 | as_warn ("Repeat < 0, .fill ignored"); | |
1523 | temp_size = 0; | |
1524 | } | |
7fd3560a | 1525 | |
6efd877d KR |
1526 | if (temp_size && !need_pass_2) |
1527 | { | |
1528 | p = frag_var (rs_fill, (int) temp_size, (int) temp_size, (relax_substateT) 0, (symbolS *) 0, temp_repeat, (char *) 0); | |
604633ae | 1529 | memset (p, 0, (unsigned int) temp_size); |
c8863a58 KR |
1530 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
1531 | * flavoured AS. The following bizzare behaviour is to be | |
1532 | * compatible with above. I guess they tried to take up to 8 | |
1533 | * bytes from a 4-byte expression and they forgot to sign | |
1534 | * extend. Un*x Sux. */ | |
fecd2382 | 1535 | #define BSD_FILL_SIZE_CROCK_4 (4) |
604633ae | 1536 | md_number_to_chars (p, (valueT) temp_fill, |
c8863a58 KR |
1537 | (temp_size > BSD_FILL_SIZE_CROCK_4 |
1538 | ? BSD_FILL_SIZE_CROCK_4 | |
1539 | : (int) temp_size)); | |
1540 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
1541 | * but emits no error message because it seems a legal thing to do. | |
1542 | * It is a degenerate case of .fill but could be emitted by a compiler. | |
1543 | */ | |
6efd877d | 1544 | } |
6efd877d | 1545 | demand_empty_rest_of_line (); |
f8701a3f SC |
1546 | } |
1547 | ||
6efd877d | 1548 | void |
604633ae ILT |
1549 | s_globl (ignore) |
1550 | int ignore; | |
6efd877d | 1551 | { |
40324362 KR |
1552 | char *name; |
1553 | int c; | |
1554 | symbolS *symbolP; | |
18c9057f ILT |
1555 | char *stop = NULL; |
1556 | char stopc; | |
1557 | ||
1558 | if (flag_mri) | |
1559 | stop = mri_comment_field (&stopc); | |
fecd2382 | 1560 | |
6efd877d KR |
1561 | do |
1562 | { | |
1563 | name = input_line_pointer; | |
1564 | c = get_symbol_end (); | |
1565 | symbolP = symbol_find_or_make (name); | |
1566 | *input_line_pointer = c; | |
1567 | SKIP_WHITESPACE (); | |
1568 | S_SET_EXTERNAL (symbolP); | |
1569 | if (c == ',') | |
1570 | { | |
1571 | input_line_pointer++; | |
1572 | SKIP_WHITESPACE (); | |
1573 | if (*input_line_pointer == '\n') | |
1574 | c = '\n'; | |
1575 | } | |
1576 | } | |
1577 | while (c == ','); | |
18c9057f ILT |
1578 | |
1579 | if (flag_mri) | |
1580 | mri_comment_end (stop, stopc); | |
1581 | ||
6efd877d | 1582 | demand_empty_rest_of_line (); |
40324362 | 1583 | } |
6efd877d | 1584 | |
7e047ac2 ILT |
1585 | /* Handle the MRI IRP and IRPC pseudo-ops. */ |
1586 | ||
1587 | void | |
1588 | s_irp (irpc) | |
1589 | int irpc; | |
1590 | { | |
1591 | char *file; | |
1592 | unsigned int line; | |
1593 | sb s; | |
1594 | const char *err; | |
1595 | sb out; | |
1596 | ||
1597 | as_where (&file, &line); | |
1598 | ||
1599 | sb_new (&s); | |
1600 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1601 | sb_add_char (&s, *input_line_pointer++); | |
1602 | ||
1603 | sb_new (&out); | |
1604 | ||
1605 | err = expand_irp (irpc, 0, &s, &out, get_line_sb, '\0'); | |
1606 | if (err != NULL) | |
1607 | as_bad_where (file, line, "%s", err); | |
1608 | ||
1609 | sb_kill (&s); | |
1610 | ||
1611 | input_scrub_include_sb (&out, input_line_pointer); | |
1612 | sb_kill (&out); | |
1613 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1614 | } | |
1615 | ||
6efd877d KR |
1616 | void |
1617 | s_lcomm (needs_align) | |
c8863a58 KR |
1618 | /* 1 if this was a ".bss" directive, which may require a 3rd argument |
1619 | (alignment); 0 if it was an ".lcomm" (2 args only) */ | |
1620 | int needs_align; | |
fecd2382 | 1621 | { |
6efd877d KR |
1622 | register char *name; |
1623 | register char c; | |
1624 | register char *p; | |
1625 | register int temp; | |
1626 | register symbolS *symbolP; | |
9a7d824a ILT |
1627 | segT current_seg = now_seg; |
1628 | subsegT current_subseg = now_subseg; | |
6efd877d KR |
1629 | const int max_alignment = 15; |
1630 | int align = 0; | |
9a7d824a | 1631 | segT bss_seg = bss_section; |
6efd877d KR |
1632 | |
1633 | name = input_line_pointer; | |
1634 | c = get_symbol_end (); | |
1635 | p = input_line_pointer; | |
1636 | *p = c; | |
1637 | SKIP_WHITESPACE (); | |
46b81190 ILT |
1638 | |
1639 | /* Accept an optional comma after the name. The comma used to be | |
1640 | required, but Irix 5 cc does not generate it. */ | |
1641 | if (*input_line_pointer == ',') | |
6efd877d | 1642 | { |
46b81190 ILT |
1643 | ++input_line_pointer; |
1644 | SKIP_WHITESPACE (); | |
6efd877d | 1645 | } |
f8701a3f | 1646 | |
6efd877d KR |
1647 | if (*input_line_pointer == '\n') |
1648 | { | |
1649 | as_bad ("Missing size expression"); | |
1650 | return; | |
1651 | } | |
f8701a3f | 1652 | |
6efd877d KR |
1653 | if ((temp = get_absolute_expression ()) < 0) |
1654 | { | |
1655 | as_warn ("BSS length (%d.) <0! Ignored.", temp); | |
1656 | ignore_rest_of_line (); | |
1657 | return; | |
1658 | } | |
f8701a3f | 1659 | |
2ef7731d | 1660 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
a2a5a4fa KR |
1661 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour |
1662 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
46b81190 | 1663 | { |
a2a5a4fa KR |
1664 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ |
1665 | if (temp <= bfd_get_gp_size (stdoutput)) | |
1666 | { | |
1667 | bss_seg = subseg_new (".sbss", 1); | |
1668 | seg_info (bss_seg)->bss = 1; | |
1669 | } | |
46b81190 | 1670 | } |
9a7d824a | 1671 | #endif |
ede7bc1c SC |
1672 | if (!needs_align) |
1673 | { | |
1674 | /* FIXME. This needs to be machine independent. */ | |
9d90491e ILT |
1675 | if (temp >= 8) |
1676 | align = 3; | |
1677 | else if (temp >= 4) | |
ede7bc1c SC |
1678 | align = 2; |
1679 | else if (temp >= 2) | |
1680 | align = 1; | |
1681 | else | |
c71a604a | 1682 | align = 0; |
ede7bc1c SC |
1683 | |
1684 | record_alignment(bss_seg, align); | |
1685 | } | |
9a7d824a | 1686 | |
6efd877d KR |
1687 | if (needs_align) |
1688 | { | |
1689 | align = 0; | |
1690 | SKIP_WHITESPACE (); | |
1691 | if (*input_line_pointer != ',') | |
1692 | { | |
1693 | as_bad ("Expected comma after size"); | |
1694 | ignore_rest_of_line (); | |
1695 | return; | |
1696 | } | |
1697 | input_line_pointer++; | |
1698 | SKIP_WHITESPACE (); | |
1699 | if (*input_line_pointer == '\n') | |
1700 | { | |
1701 | as_bad ("Missing alignment"); | |
1702 | return; | |
1703 | } | |
1704 | align = get_absolute_expression (); | |
1705 | if (align > max_alignment) | |
1706 | { | |
1707 | align = max_alignment; | |
1708 | as_warn ("Alignment too large: %d. assumed.", align); | |
1709 | } | |
1710 | else if (align < 0) | |
1711 | { | |
1712 | align = 0; | |
1713 | as_warn ("Alignment negative. 0 assumed."); | |
1714 | } | |
9a7d824a | 1715 | record_alignment (bss_seg, align); |
6efd877d | 1716 | } /* if needs align */ |
4075afe1 KR |
1717 | else |
1718 | { | |
1719 | /* Assume some objects may require alignment on some systems. */ | |
1720 | #ifdef TC_ALPHA | |
1721 | if (temp > 1) | |
1722 | { | |
1723 | align = ffs (temp) - 1; | |
1724 | if (temp % (1 << align)) | |
1725 | abort (); | |
1726 | } | |
1727 | #endif | |
1728 | } | |
f8701a3f | 1729 | |
6efd877d KR |
1730 | *p = 0; |
1731 | symbolP = symbol_find_or_make (name); | |
1732 | *p = c; | |
f8701a3f | 1733 | |
6efd877d | 1734 | if ( |
fecd2382 | 1735 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
1736 | S_GET_OTHER (symbolP) == 0 && |
1737 | S_GET_DESC (symbolP) == 0 && | |
fecd2382 | 1738 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
9a7d824a | 1739 | (S_GET_SEGMENT (symbolP) == bss_seg |
6efd877d KR |
1740 | || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0))) |
1741 | { | |
604633ae | 1742 | char *pfrag; |
85825401 | 1743 | |
9a7d824a | 1744 | subseg_set (bss_seg, 1); |
85825401 ILT |
1745 | |
1746 | if (align) | |
1747 | frag_align (align, 0); | |
1748 | /* detach from old frag */ | |
9a7d824a | 1749 | if (S_GET_SEGMENT (symbolP) == bss_seg) |
85825401 ILT |
1750 | symbolP->sy_frag->fr_symbol = NULL; |
1751 | ||
1752 | symbolP->sy_frag = frag_now; | |
604633ae ILT |
1753 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP, |
1754 | temp, (char *)0); | |
1755 | *pfrag = 0; | |
f8701a3f | 1756 | |
9a7d824a | 1757 | S_SET_SEGMENT (symbolP, bss_seg); |
85825401 | 1758 | |
fecd2382 | 1759 | #ifdef OBJ_COFF |
6efd877d | 1760 | /* The symbol may already have been created with a preceding |
c8863a58 KR |
1761 | ".globl" directive -- be careful not to step on storage class |
1762 | in that case. Otherwise, set it to static. */ | |
6efd877d KR |
1763 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) |
1764 | { | |
1765 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
fecd2382 | 1766 | } |
6efd877d | 1767 | #endif /* OBJ_COFF */ |
6efd877d KR |
1768 | } |
1769 | else | |
6ef37255 KR |
1770 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
1771 | S_GET_NAME (symbolP)); | |
f8701a3f | 1772 | |
9a7d824a | 1773 | subseg_set (current_seg, current_subseg); |
9a7d824a ILT |
1774 | |
1775 | demand_empty_rest_of_line (); | |
6efd877d | 1776 | } /* s_lcomm() */ |
fecd2382 | 1777 | |
6efd877d | 1778 | void |
604633ae ILT |
1779 | s_lsym (ignore) |
1780 | int ignore; | |
6efd877d KR |
1781 | { |
1782 | register char *name; | |
1783 | register char c; | |
1784 | register char *p; | |
6efd877d KR |
1785 | expressionS exp; |
1786 | register symbolS *symbolP; | |
1787 | ||
1788 | /* we permit ANY defined expression: BSD4.2 demands constants */ | |
1789 | name = input_line_pointer; | |
1790 | c = get_symbol_end (); | |
1791 | p = input_line_pointer; | |
1792 | *p = c; | |
1793 | SKIP_WHITESPACE (); | |
1794 | if (*input_line_pointer != ',') | |
1795 | { | |
1796 | *p = 0; | |
1797 | as_bad ("Expected comma after name \"%s\"", name); | |
1798 | *p = c; | |
1799 | ignore_rest_of_line (); | |
1800 | return; | |
1801 | } | |
1802 | input_line_pointer++; | |
b31f2abb KR |
1803 | expression (&exp); |
1804 | if (exp.X_op != O_constant | |
1805 | && exp.X_op != O_register) | |
1806 | { | |
1807 | as_bad ("bad expression"); | |
1808 | ignore_rest_of_line (); | |
1809 | return; | |
1810 | } | |
6efd877d KR |
1811 | *p = 0; |
1812 | symbolP = symbol_find_or_make (name); | |
f8701a3f | 1813 | |
c8863a58 KR |
1814 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && |
1815 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
1816 | those fields, and I can't see when they'd ever be tripped. I | |
1817 | don't think I understand why they were here so I may have | |
1818 | introduced a bug. As recently as 1.37 didn't have this test | |
1819 | anyway. xoxorich. */ | |
f8701a3f | 1820 | |
9471a360 | 1821 | if (S_GET_SEGMENT (symbolP) == undefined_section |
6efd877d KR |
1822 | && S_GET_VALUE (symbolP) == 0) |
1823 | { | |
c8863a58 KR |
1824 | /* The name might be an undefined .global symbol; be sure to |
1825 | keep the "external" bit. */ | |
b31f2abb KR |
1826 | S_SET_SEGMENT (symbolP, |
1827 | (exp.X_op == O_constant | |
1828 | ? absolute_section | |
1829 | : reg_section)); | |
1830 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
6efd877d KR |
1831 | } |
1832 | else | |
1833 | { | |
1834 | as_bad ("Symbol %s already defined", name); | |
1835 | } | |
1836 | *p = c; | |
1837 | demand_empty_rest_of_line (); | |
1838 | } /* s_lsym() */ | |
1839 | ||
7e047ac2 ILT |
1840 | /* Read a line into an sb. */ |
1841 | ||
1842 | static int | |
1843 | get_line_sb (line) | |
1844 | sb *line; | |
1845 | { | |
1846 | if (input_line_pointer >= buffer_limit) | |
1847 | { | |
1848 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1849 | if (buffer_limit == 0) | |
1850 | return 0; | |
1851 | } | |
1852 | ||
1853 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1854 | sb_add_char (line, *input_line_pointer++); | |
42ac8fa8 ILT |
1855 | while (input_line_pointer < buffer_limit |
1856 | && is_end_of_line[(unsigned char) *input_line_pointer]) | |
7e047ac2 ILT |
1857 | { |
1858 | if (*input_line_pointer == '\n') | |
1859 | { | |
1860 | bump_line_counters (); | |
1861 | LISTING_NEWLINE (); | |
1862 | } | |
1863 | ++input_line_pointer; | |
1864 | } | |
1865 | return 1; | |
1866 | } | |
1867 | ||
1868 | /* Define a macro. This is an interface to macro.c, which is shared | |
1869 | between gas and gasp. */ | |
1870 | ||
1871 | void | |
1872 | s_macro (ignore) | |
1873 | int ignore; | |
1874 | { | |
1875 | char *file; | |
1876 | unsigned int line; | |
1877 | sb s; | |
1878 | sb label; | |
1879 | const char *err; | |
1880 | ||
1881 | as_where (&file, &line); | |
1882 | ||
1883 | sb_new (&s); | |
1884 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1885 | sb_add_char (&s, *input_line_pointer++); | |
1886 | ||
1887 | sb_new (&label); | |
1888 | if (line_label != NULL) | |
1889 | sb_add_string (&label, S_GET_NAME (line_label)); | |
1890 | ||
1891 | demand_empty_rest_of_line (); | |
1892 | ||
1893 | err = define_macro (0, &s, &label, get_line_sb); | |
1894 | if (err != NULL) | |
1895 | as_bad_where (file, line, "%s", err); | |
1896 | else | |
1897 | { | |
1898 | if (line_label != NULL) | |
1899 | { | |
1900 | S_SET_SEGMENT (line_label, undefined_section); | |
1901 | S_SET_VALUE (line_label, 0); | |
1902 | line_label->sy_frag = &zero_address_frag; | |
1903 | } | |
1904 | } | |
1905 | ||
1906 | sb_kill (&s); | |
1907 | } | |
1908 | ||
1909 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
1910 | expansion. */ | |
1911 | ||
1912 | void | |
1913 | s_mexit (ignore) | |
1914 | int ignore; | |
1915 | { | |
1916 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1917 | } | |
1918 | ||
e28c40d7 ILT |
1919 | /* Handle changing the location counter. */ |
1920 | ||
1921 | static void | |
1922 | do_org (segment, exp, fill) | |
1923 | segT segment; | |
1924 | expressionS *exp; | |
1925 | int fill; | |
1926 | { | |
1927 | if (segment != now_seg && segment != absolute_section) | |
1928 | as_bad ("invalid segment \"%s\"; segment \"%s\" assumed", | |
1929 | segment_name (segment), segment_name (now_seg)); | |
1930 | ||
1931 | if (now_seg == absolute_section) | |
1932 | { | |
1933 | if (fill != 0) | |
1934 | as_warn ("ignoring fill value in absolute section"); | |
1935 | if (exp->X_op != O_constant) | |
1936 | { | |
1937 | as_bad ("only constant offsets supported in absolute section"); | |
1938 | exp->X_add_number = 0; | |
1939 | } | |
1940 | abs_section_offset = exp->X_add_number; | |
1941 | } | |
1942 | else | |
1943 | { | |
1944 | char *p; | |
1945 | ||
1946 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp->X_add_symbol, | |
1947 | exp->X_add_number, (char *) NULL); | |
1948 | *p = fill; | |
1949 | } | |
1950 | } | |
1951 | ||
6efd877d | 1952 | void |
604633ae ILT |
1953 | s_org (ignore) |
1954 | int ignore; | |
6efd877d KR |
1955 | { |
1956 | register segT segment; | |
1957 | expressionS exp; | |
1958 | register long temp_fill; | |
e28c40d7 | 1959 | |
42ac8fa8 ILT |
1960 | #ifdef TC_M68K |
1961 | /* The m68k MRI assembler has a different meaning for .org. It | |
1962 | means to create an absolute section at a given address. We can't | |
1963 | support that--use a linker script instead. */ | |
69e077f3 ILT |
1964 | if (flag_mri) |
1965 | { | |
1966 | as_bad ("MRI style ORG pseudo-op not supported"); | |
1967 | ignore_rest_of_line (); | |
1968 | return; | |
1969 | } | |
42ac8fa8 | 1970 | #endif |
69e077f3 | 1971 | |
9471a360 KR |
1972 | /* Don't believe the documentation of BSD 4.2 AS. There is no such |
1973 | thing as a sub-segment-relative origin. Any absolute origin is | |
1974 | given a warning, then assumed to be segment-relative. Any | |
1975 | segmented origin expression ("foo+42") had better be in the right | |
1976 | segment or the .org is ignored. | |
1977 | ||
1978 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
1979 | we never know sub-segment sizes when we are reading code. BSD | |
1980 | will crash trying to emit negative numbers of filler bytes in | |
1981 | certain .orgs. We don't crash, but see as-write for that code. | |
1982 | ||
1983 | Don't make frag if need_pass_2==1. */ | |
6efd877d KR |
1984 | segment = get_known_segmented_expression (&exp); |
1985 | if (*input_line_pointer == ',') | |
1986 | { | |
1987 | input_line_pointer++; | |
1988 | temp_fill = get_absolute_expression (); | |
1989 | } | |
1990 | else | |
1991 | temp_fill = 0; | |
e28c40d7 | 1992 | |
6efd877d | 1993 | if (!need_pass_2) |
e28c40d7 ILT |
1994 | do_org (segment, &exp, temp_fill); |
1995 | ||
6efd877d KR |
1996 | demand_empty_rest_of_line (); |
1997 | } /* s_org() */ | |
1998 | ||
e14994d9 ILT |
1999 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be |
2000 | called by the obj-format routine which handles section changing | |
2001 | when in MRI mode. It will create a new section, and return it. It | |
2002 | will set *TYPE to the section type: one of '\0' (unspecified), 'C' | |
2003 | (code), 'D' (data), 'M' (mixed), or 'R' (romable). If | |
2004 | BFD_ASSEMBLER is defined, the flags will be set in the section. */ | |
2005 | ||
2006 | void | |
2007 | s_mri_sect (type) | |
2008 | char *type; | |
2009 | { | |
42ac8fa8 ILT |
2010 | #ifdef TC_M68K |
2011 | ||
e14994d9 ILT |
2012 | char *name; |
2013 | char c; | |
2014 | segT seg; | |
2015 | ||
2016 | SKIP_WHITESPACE (); | |
2017 | ||
2018 | name = input_line_pointer; | |
2019 | if (! isdigit ((unsigned char) *name)) | |
2020 | c = get_symbol_end (); | |
2021 | else | |
2022 | { | |
2023 | do | |
2024 | { | |
2025 | ++input_line_pointer; | |
2026 | } | |
2027 | while (isdigit ((unsigned char) *input_line_pointer)); | |
2028 | c = *input_line_pointer; | |
2029 | *input_line_pointer = '\0'; | |
2030 | } | |
2031 | ||
2032 | name = strdup (name); | |
2033 | if (name == NULL) | |
2034 | as_fatal ("virtual memory exhausted"); | |
2035 | ||
2036 | *input_line_pointer = c; | |
2037 | ||
2038 | seg = subseg_new (name, 0); | |
2039 | ||
2040 | if (*input_line_pointer == ',') | |
2041 | { | |
2042 | int align; | |
2043 | ||
2044 | ++input_line_pointer; | |
2045 | align = get_absolute_expression (); | |
2046 | record_alignment (seg, align); | |
2047 | } | |
2048 | ||
2049 | *type = '\0'; | |
2050 | if (*input_line_pointer == ',') | |
2051 | { | |
2052 | c = *++input_line_pointer; | |
2053 | c = toupper ((unsigned char) c); | |
2054 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') | |
2055 | *type = c; | |
2056 | else | |
2057 | as_bad ("unrecognized section type"); | |
2058 | ++input_line_pointer; | |
2059 | ||
2060 | #ifdef BFD_ASSEMBLER | |
2061 | { | |
2062 | flagword flags; | |
2063 | ||
2064 | flags = SEC_NO_FLAGS; | |
ca232972 | 2065 | if (*type == 'C') |
e14994d9 | 2066 | flags = SEC_CODE; |
ca232972 | 2067 | else if (*type == 'D') |
e14994d9 | 2068 | flags = SEC_DATA; |
ca232972 | 2069 | else if (*type == 'R') |
e14994d9 ILT |
2070 | flags = SEC_ROM; |
2071 | if (flags != SEC_NO_FLAGS) | |
2072 | { | |
2073 | if (! bfd_set_section_flags (stdoutput, seg, flags)) | |
2074 | as_warn ("error setting flags for \"%s\": %s", | |
ca232972 | 2075 | bfd_section_name (stdoutput, seg), |
e14994d9 ILT |
2076 | bfd_errmsg (bfd_get_error ())); |
2077 | } | |
2078 | } | |
2079 | #endif | |
2080 | } | |
2081 | ||
2082 | /* Ignore the HP type. */ | |
2083 | if (*input_line_pointer == ',') | |
2084 | input_line_pointer += 2; | |
2085 | ||
2086 | demand_empty_rest_of_line (); | |
42ac8fa8 ILT |
2087 | |
2088 | #else /* ! TC_M68K */ | |
2089 | #ifdef TC_I960 | |
2090 | ||
2091 | char *name; | |
2092 | char c; | |
2093 | segT seg; | |
2094 | ||
2095 | SKIP_WHITESPACE (); | |
2096 | ||
2097 | name = input_line_pointer; | |
2098 | c = get_symbol_end (); | |
2099 | ||
2100 | name = strdup (name); | |
2101 | if (name == NULL) | |
2102 | as_fatal ("virtual memory exhausted"); | |
2103 | ||
2104 | *input_line_pointer = c; | |
2105 | ||
2106 | seg = subseg_new (name, 0); | |
2107 | ||
2108 | if (*input_line_pointer != ',') | |
2109 | *type = 'C'; | |
2110 | else | |
2111 | { | |
2112 | char *sectype; | |
2113 | ||
2114 | ++input_line_pointer; | |
2115 | SKIP_WHITESPACE (); | |
2116 | sectype = input_line_pointer; | |
2117 | c = get_symbol_end (); | |
2118 | if (*sectype == '\0') | |
2119 | *type = 'C'; | |
2120 | else if (strcasecmp (sectype, "text") == 0) | |
2121 | *type = 'C'; | |
2122 | else if (strcasecmp (sectype, "data") == 0) | |
2123 | *type = 'D'; | |
2124 | else if (strcasecmp (sectype, "romdata") == 0) | |
2125 | *type = 'R'; | |
2126 | else | |
2127 | as_warn ("unrecognized section type `%s'", sectype); | |
2128 | *input_line_pointer = c; | |
2129 | } | |
2130 | ||
2131 | if (*input_line_pointer == ',') | |
2132 | { | |
2133 | char *seccmd; | |
2134 | ||
2135 | ++input_line_pointer; | |
2136 | SKIP_WHITESPACE (); | |
2137 | seccmd = input_line_pointer; | |
2138 | c = get_symbol_end (); | |
2139 | if (strcasecmp (seccmd, "absolute") == 0) | |
2140 | { | |
2141 | as_bad ("absolute sections are not supported"); | |
2142 | *input_line_pointer = c; | |
2143 | ignore_rest_of_line (); | |
2144 | return; | |
2145 | } | |
2146 | else if (strcasecmp (seccmd, "align") == 0) | |
2147 | { | |
2148 | int align; | |
2149 | ||
2150 | *input_line_pointer = c; | |
2151 | align = get_absolute_expression (); | |
2152 | record_alignment (seg, align); | |
2153 | } | |
2154 | else | |
2155 | { | |
2156 | as_warn ("unrecognized section command `%s'", seccmd); | |
2157 | *input_line_pointer = c; | |
2158 | } | |
2159 | } | |
2160 | ||
2161 | demand_empty_rest_of_line (); | |
2162 | ||
2163 | #else /* ! TC_I960 */ | |
2164 | /* The MRI assembler seems to use different forms of .sect for | |
2165 | different targets. */ | |
2166 | abort (); | |
2167 | #endif /* ! TC_I960 */ | |
2168 | #endif /* ! TC_M68K */ | |
2169 | } | |
2170 | ||
2171 | /* Handle the .print pseudo-op. */ | |
2172 | ||
2173 | void | |
2174 | s_print (ignore) | |
2175 | int ignore; | |
2176 | { | |
2177 | char *s; | |
2178 | int len; | |
2179 | ||
2180 | s = demand_copy_C_string (&len); | |
2181 | printf ("%s\n", s); | |
2182 | demand_empty_rest_of_line (); | |
2183 | } | |
2184 | ||
2185 | /* Handle the .purgem pseudo-op. */ | |
2186 | ||
2187 | void | |
2188 | s_purgem (ignore) | |
2189 | int ignore; | |
2190 | { | |
2191 | if (is_it_end_of_statement ()) | |
2192 | { | |
2193 | demand_empty_rest_of_line (); | |
2194 | return; | |
2195 | } | |
2196 | ||
2197 | do | |
2198 | { | |
2199 | char *name; | |
2200 | char c; | |
2201 | ||
2202 | SKIP_WHITESPACE (); | |
2203 | name = input_line_pointer; | |
2204 | c = get_symbol_end (); | |
2205 | delete_macro (name); | |
2206 | *input_line_pointer = c; | |
2207 | SKIP_WHITESPACE (); | |
2208 | } | |
2209 | while (*input_line_pointer++ == ','); | |
2210 | ||
2211 | --input_line_pointer; | |
2212 | demand_empty_rest_of_line (); | |
e14994d9 ILT |
2213 | } |
2214 | ||
7e047ac2 ILT |
2215 | /* Handle the .rept pseudo-op. */ |
2216 | ||
2217 | void | |
2218 | s_rept (ignore) | |
2219 | int ignore; | |
2220 | { | |
2221 | int count; | |
2222 | sb one; | |
2223 | sb many; | |
2224 | ||
2225 | count = get_absolute_expression (); | |
2226 | ||
2227 | sb_new (&one); | |
2228 | if (! buffer_and_nest ("REPT", "ENDR", &one, get_line_sb)) | |
2229 | { | |
2230 | as_bad ("rept without endr"); | |
2231 | return; | |
2232 | } | |
2233 | ||
2234 | sb_new (&many); | |
2235 | while (count-- > 0) | |
2236 | sb_add_sb (&many, &one); | |
2237 | ||
2238 | sb_kill (&one); | |
2239 | ||
2240 | input_scrub_include_sb (&many, input_line_pointer); | |
2241 | sb_kill (&many); | |
2242 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2243 | } | |
2244 | ||
6efd877d | 2245 | void |
604633ae ILT |
2246 | s_set (ignore) |
2247 | int ignore; | |
6efd877d KR |
2248 | { |
2249 | register char *name; | |
2250 | register char delim; | |
2251 | register char *end_name; | |
2252 | register symbolS *symbolP; | |
2253 | ||
2254 | /* | |
c8863a58 KR |
2255 | * Especial apologies for the random logic: |
2256 | * this just grew, and could be parsed much more simply! | |
2257 | * Dean in haste. | |
2258 | */ | |
6efd877d KR |
2259 | name = input_line_pointer; |
2260 | delim = get_symbol_end (); | |
2261 | end_name = input_line_pointer; | |
2262 | *end_name = delim; | |
2263 | SKIP_WHITESPACE (); | |
f8701a3f | 2264 | |
6efd877d KR |
2265 | if (*input_line_pointer != ',') |
2266 | { | |
2267 | *end_name = 0; | |
2268 | as_bad ("Expected comma after name \"%s\"", name); | |
2269 | *end_name = delim; | |
2270 | ignore_rest_of_line (); | |
2271 | return; | |
2272 | } | |
2273 | ||
2274 | input_line_pointer++; | |
2275 | *end_name = 0; | |
2276 | ||
2277 | if (name[0] == '.' && name[1] == '\0') | |
2278 | { | |
2279 | /* Turn '. = mumble' into a .org mumble */ | |
2280 | register segT segment; | |
2281 | expressionS exp; | |
6efd877d KR |
2282 | |
2283 | segment = get_known_segmented_expression (&exp); | |
f8701a3f | 2284 | |
6efd877d | 2285 | if (!need_pass_2) |
e28c40d7 | 2286 | do_org (segment, &exp, 0); |
6efd877d KR |
2287 | |
2288 | *end_name = delim; | |
2289 | return; | |
2290 | } | |
2291 | ||
2292 | if ((symbolP = symbol_find (name)) == NULL | |
2293 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2294 | { | |
9471a360 | 2295 | symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag); |
fecd2382 | 2296 | #ifdef OBJ_COFF |
6efd877d KR |
2297 | /* "set" symbols are local unless otherwise specified. */ |
2298 | SF_SET_LOCAL (symbolP); | |
fecd2382 | 2299 | #endif /* OBJ_COFF */ |
f8701a3f | 2300 | |
6efd877d | 2301 | } /* make a new symbol */ |
f8701a3f | 2302 | |
6efd877d | 2303 | symbol_table_insert (symbolP); |
f8701a3f | 2304 | |
6efd877d KR |
2305 | *end_name = delim; |
2306 | pseudo_set (symbolP); | |
2307 | demand_empty_rest_of_line (); | |
2308 | } /* s_set() */ | |
fecd2382 | 2309 | |
6efd877d KR |
2310 | void |
2311 | s_space (mult) | |
2312 | int mult; | |
b53ccaac | 2313 | { |
cd3b81bd | 2314 | expressionS exp; |
931a8fab | 2315 | long temp_fill; |
cd3b81bd | 2316 | char *p = 0; |
3dce804d ILT |
2317 | char *stop = NULL; |
2318 | char stopc; | |
6efd877d | 2319 | |
a2a5a4fa KR |
2320 | #ifdef md_flush_pending_output |
2321 | md_flush_pending_output (); | |
2322 | #endif | |
2323 | ||
3dce804d | 2324 | if (flag_mri) |
18c9057f | 2325 | stop = mri_comment_field (&stopc); |
3dce804d | 2326 | |
6efd877d | 2327 | /* Just like .fill, but temp_size = 1 */ |
cd3b81bd | 2328 | expression (&exp); |
931a8fab | 2329 | if (exp.X_op == O_constant) |
6efd877d | 2330 | { |
cd3b81bd KR |
2331 | long repeat; |
2332 | ||
2333 | repeat = exp.X_add_number; | |
2334 | if (mult) | |
2335 | repeat *= mult; | |
2336 | if (repeat <= 0) | |
2337 | { | |
4026c122 ILT |
2338 | if (! flag_mri || repeat < 0) |
2339 | as_warn (".space repeat count is %s, ignored", | |
2340 | repeat ? "negative" : "zero"); | |
3dce804d | 2341 | goto getout; |
cd3b81bd KR |
2342 | } |
2343 | ||
e28c40d7 ILT |
2344 | /* If we are in the absolute section, just bump the offset. */ |
2345 | if (now_seg == absolute_section) | |
2346 | { | |
2347 | abs_section_offset += repeat; | |
3dce804d | 2348 | goto getout; |
e28c40d7 ILT |
2349 | } |
2350 | ||
1356d77d ILT |
2351 | /* If we are secretly in an MRI common section, then creating |
2352 | space just increases the size of the common symbol. */ | |
2353 | if (mri_common_symbol != NULL) | |
2354 | { | |
2355 | S_SET_VALUE (mri_common_symbol, | |
2356 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3dce804d | 2357 | goto getout; |
1356d77d ILT |
2358 | } |
2359 | ||
cd3b81bd KR |
2360 | if (!need_pass_2) |
2361 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
931a8fab | 2362 | repeat, (char *) 0); |
6efd877d KR |
2363 | } |
2364 | else | |
2365 | { | |
e28c40d7 ILT |
2366 | if (now_seg == absolute_section) |
2367 | { | |
2368 | as_bad ("space allocation too complex in absolute section"); | |
2369 | subseg_set (text_section, 0); | |
2370 | } | |
1356d77d ILT |
2371 | if (mri_common_symbol != NULL) |
2372 | { | |
2373 | as_bad ("space allocation too complex in common section"); | |
2374 | mri_common_symbol = NULL; | |
2375 | } | |
cd3b81bd KR |
2376 | if (!need_pass_2) |
2377 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
2378 | make_expr_symbol (&exp), 0L, (char *) 0); | |
6efd877d | 2379 | } |
931a8fab KR |
2380 | SKIP_WHITESPACE (); |
2381 | if (*input_line_pointer == ',') | |
6efd877d | 2382 | { |
931a8fab | 2383 | input_line_pointer++; |
cd3b81bd | 2384 | temp_fill = get_absolute_expression (); |
6efd877d | 2385 | } |
cd3b81bd | 2386 | else |
6efd877d | 2387 | { |
cd3b81bd | 2388 | temp_fill = 0; |
6efd877d | 2389 | } |
cd3b81bd | 2390 | if (p) |
6efd877d | 2391 | { |
6efd877d KR |
2392 | *p = temp_fill; |
2393 | } | |
3dce804d ILT |
2394 | |
2395 | getout: | |
2396 | if (flag_mri) | |
18c9057f | 2397 | mri_comment_end (stop, stopc); |
3dce804d | 2398 | |
6efd877d | 2399 | demand_empty_rest_of_line (); |
cd3b81bd | 2400 | } |
fecd2382 | 2401 | |
e28c40d7 ILT |
2402 | /* This is like s_space, but the value is a floating point number with |
2403 | the given precision. This is for the MRI dcb.s pseudo-op and | |
2404 | friends. */ | |
2405 | ||
2406 | void | |
2407 | s_float_space (float_type) | |
2408 | int float_type; | |
2409 | { | |
2410 | offsetT count; | |
2411 | int flen; | |
2412 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
18c9057f ILT |
2413 | char *stop = NULL; |
2414 | char stopc; | |
2415 | ||
2416 | if (flag_mri) | |
2417 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
2418 | |
2419 | count = get_absolute_expression (); | |
2420 | ||
2421 | SKIP_WHITESPACE (); | |
2422 | if (*input_line_pointer != ',') | |
2423 | { | |
2424 | as_bad ("missing value"); | |
18c9057f ILT |
2425 | if (flag_mri) |
2426 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2427 | ignore_rest_of_line (); |
2428 | return; | |
2429 | } | |
2430 | ||
2431 | ++input_line_pointer; | |
2432 | ||
2433 | SKIP_WHITESPACE (); | |
2434 | ||
2435 | /* Skip any 0{letter} that may be present. Don't even check if the | |
2436 | * letter is legal. */ | |
2437 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) | |
2438 | input_line_pointer += 2; | |
2439 | ||
2440 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
2441 | with the exact digits specified. */ | |
2442 | if (input_line_pointer[0] == ':') | |
2443 | { | |
2444 | flen = hex_float (float_type, temp); | |
2445 | if (flen < 0) | |
2446 | { | |
18c9057f ILT |
2447 | if (flag_mri) |
2448 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2449 | ignore_rest_of_line (); |
2450 | return; | |
2451 | } | |
2452 | } | |
2453 | else | |
2454 | { | |
2455 | char *err; | |
2456 | ||
2457 | err = md_atof (float_type, temp, &flen); | |
2458 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
2459 | know (flen > 0); | |
2460 | if (err) | |
2461 | { | |
2462 | as_bad ("Bad floating literal: %s", err); | |
18c9057f ILT |
2463 | if (flag_mri) |
2464 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2465 | ignore_rest_of_line (); |
2466 | return; | |
2467 | } | |
2468 | } | |
2469 | ||
2470 | while (--count >= 0) | |
2471 | { | |
2472 | char *p; | |
2473 | ||
2474 | p = frag_more (flen); | |
2475 | memcpy (p, temp, (unsigned int) flen); | |
2476 | } | |
2477 | ||
18c9057f ILT |
2478 | if (flag_mri) |
2479 | mri_comment_end (stop, stopc); | |
2480 | ||
e28c40d7 ILT |
2481 | demand_empty_rest_of_line (); |
2482 | } | |
2483 | ||
2484 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
2485 | ||
2486 | void | |
2487 | s_struct (ignore) | |
2488 | int ignore; | |
2489 | { | |
18c9057f ILT |
2490 | char *stop = NULL; |
2491 | char stopc; | |
2492 | ||
2493 | if (flag_mri) | |
2494 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
2495 | abs_section_offset = get_absolute_expression (); |
2496 | subseg_set (absolute_section, 0); | |
18c9057f ILT |
2497 | if (flag_mri) |
2498 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2499 | demand_empty_rest_of_line (); |
2500 | } | |
2501 | ||
fecd2382 | 2502 | void |
604633ae ILT |
2503 | s_text (ignore) |
2504 | int ignore; | |
fecd2382 | 2505 | { |
6efd877d | 2506 | register int temp; |
f8701a3f | 2507 | |
6efd877d | 2508 | temp = get_absolute_expression (); |
9471a360 | 2509 | subseg_set (text_section, (subsegT) temp); |
6efd877d | 2510 | demand_empty_rest_of_line (); |
80d80c64 KR |
2511 | #ifdef OBJ_VMS |
2512 | const_flag &= ~IN_DEFAULT_SECTION; | |
2513 | #endif | |
6efd877d | 2514 | } /* s_text() */ |
fecd2382 | 2515 | \f |
6efd877d | 2516 | |
6efd877d KR |
2517 | void |
2518 | demand_empty_rest_of_line () | |
2519 | { | |
2520 | SKIP_WHITESPACE (); | |
58d4951d | 2521 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
2522 | { |
2523 | input_line_pointer++; | |
2524 | } | |
2525 | else | |
2526 | { | |
2527 | ignore_rest_of_line (); | |
2528 | } | |
2529 | /* Return having already swallowed end-of-line. */ | |
2530 | } /* Return pointing just after end-of-line. */ | |
fecd2382 RP |
2531 | |
2532 | void | |
6efd877d | 2533 | ignore_rest_of_line () /* For suspect lines: gives warning. */ |
fecd2382 | 2534 | { |
58d4951d | 2535 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 2536 | { |
6efd877d KR |
2537 | if (isprint (*input_line_pointer)) |
2538 | as_bad ("Rest of line ignored. First ignored character is `%c'.", | |
f8701a3f SC |
2539 | *input_line_pointer); |
2540 | else | |
6efd877d | 2541 | as_bad ("Rest of line ignored. First ignored character valued 0x%x.", |
f8701a3f SC |
2542 | *input_line_pointer); |
2543 | while (input_line_pointer < buffer_limit | |
58d4951d | 2544 | && !is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 2545 | { |
6efd877d | 2546 | input_line_pointer++; |
f8701a3f SC |
2547 | } |
2548 | } | |
6efd877d | 2549 | input_line_pointer++; /* Return pointing just after end-of-line. */ |
58d4951d | 2550 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
fecd2382 RP |
2551 | } |
2552 | ||
2553 | /* | |
2554 | * pseudo_set() | |
2555 | * | |
2556 | * In: Pointer to a symbol. | |
2557 | * Input_line_pointer->expression. | |
2558 | * | |
2559 | * Out: Input_line_pointer->just after any whitespace after expression. | |
2560 | * Tried to set symbol to value of expression. | |
2561 | * Will change symbols type, value, and frag; | |
fecd2382 RP |
2562 | */ |
2563 | void | |
f8701a3f | 2564 | pseudo_set (symbolP) |
6efd877d | 2565 | symbolS *symbolP; |
fecd2382 | 2566 | { |
6efd877d | 2567 | expressionS exp; |
daad3bbf | 2568 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
f8701a3f | 2569 | int ext; |
fecd2382 | 2570 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 2571 | |
6efd877d | 2572 | know (symbolP); /* NULL pointer is logic error. */ |
daad3bbf | 2573 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
6efd877d | 2574 | ext = S_IS_EXTERNAL (symbolP); |
fecd2382 | 2575 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 2576 | |
5ac34ac3 | 2577 | (void) expression (&exp); |
f8701a3f | 2578 | |
5ac34ac3 ILT |
2579 | if (exp.X_op == O_illegal) |
2580 | as_bad ("illegal expression; zero assumed"); | |
2581 | else if (exp.X_op == O_absent) | |
2582 | as_bad ("missing expression; zero assumed"); | |
2583 | else if (exp.X_op == O_big) | |
2584 | as_bad ("%s number invalid; zero assumed", | |
2585 | exp.X_add_number > 0 ? "bignum" : "floating point"); | |
2586 | else if (exp.X_op == O_subtract | |
2587 | && (S_GET_SEGMENT (exp.X_add_symbol) | |
2588 | == S_GET_SEGMENT (exp.X_op_symbol)) | |
2589 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) | |
2590 | && exp.X_add_symbol->sy_frag == exp.X_op_symbol->sy_frag) | |
9471a360 | 2591 | { |
5ac34ac3 ILT |
2592 | exp.X_op = O_constant; |
2593 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
2594 | - S_GET_VALUE (exp.X_op_symbol)); | |
9471a360 | 2595 | } |
5ac34ac3 ILT |
2596 | |
2597 | switch (exp.X_op) | |
9471a360 | 2598 | { |
5ac34ac3 ILT |
2599 | case O_illegal: |
2600 | case O_absent: | |
2601 | case O_big: | |
2602 | exp.X_add_number = 0; | |
2603 | /* Fall through. */ | |
2604 | case O_constant: | |
9471a360 | 2605 | S_SET_SEGMENT (symbolP, absolute_section); |
daad3bbf | 2606 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
2607 | if (ext) |
2608 | S_SET_EXTERNAL (symbolP); | |
6efd877d | 2609 | else |
6efd877d | 2610 | S_CLEAR_EXTERNAL (symbolP); |
fecd2382 | 2611 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
604633ae | 2612 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
6efd877d | 2613 | symbolP->sy_frag = &zero_address_frag; |
5ac34ac3 | 2614 | break; |
f8701a3f | 2615 | |
5ac34ac3 ILT |
2616 | case O_register: |
2617 | S_SET_SEGMENT (symbolP, reg_section); | |
604633ae | 2618 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
5ac34ac3 ILT |
2619 | symbolP->sy_frag = &zero_address_frag; |
2620 | break; | |
2621 | ||
2622 | case O_symbol: | |
ef198870 KR |
2623 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section |
2624 | || exp.X_add_number != 0) | |
5ac34ac3 | 2625 | symbolP->sy_value = exp; |
6efd877d KR |
2626 | else |
2627 | { | |
80d80c64 KR |
2628 | symbolS *s = exp.X_add_symbol; |
2629 | ||
2630 | S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s)); | |
daad3bbf | 2631 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
2632 | if (ext) |
2633 | S_SET_EXTERNAL (symbolP); | |
2634 | else | |
2635 | S_CLEAR_EXTERNAL (symbolP); | |
fecd2382 | 2636 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
5ac34ac3 | 2637 | S_SET_VALUE (symbolP, |
80d80c64 KR |
2638 | exp.X_add_number + S_GET_VALUE (s)); |
2639 | symbolP->sy_frag = s->sy_frag; | |
ef198870 | 2640 | copy_symbol_attributes (symbolP, s); |
5ac34ac3 ILT |
2641 | } |
2642 | break; | |
f8701a3f | 2643 | |
5ac34ac3 ILT |
2644 | default: |
2645 | /* The value is some complex expression. | |
2646 | FIXME: Should we set the segment to anything? */ | |
2647 | symbolP->sy_value = exp; | |
2648 | break; | |
f8701a3f | 2649 | } |
fecd2382 RP |
2650 | } |
2651 | \f | |
2652 | /* | |
2653 | * cons() | |
2654 | * | |
2655 | * CONStruct more frag of .bytes, or .words etc. | |
2656 | * Should need_pass_2 be 1 then emit no frag(s). | |
80aab579 | 2657 | * This understands EXPRESSIONS. |
fecd2382 RP |
2658 | * |
2659 | * Bug (?) | |
2660 | * | |
2661 | * This has a split personality. We use expression() to read the | |
2662 | * value. We can detect if the value won't fit in a byte or word. | |
2663 | * But we can't detect if expression() discarded significant digits | |
2664 | * in the case of a long. Not worth the crocks required to fix it. | |
2665 | */ | |
2666 | ||
40324362 KR |
2667 | /* Select a parser for cons expressions. */ |
2668 | ||
2669 | /* Some targets need to parse the expression in various fancy ways. | |
2670 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
2671 | (for example, the HPPA does this). Otherwise, you can define | |
2672 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
2673 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
2674 | are defined, which is the normal case, then only simple expressions | |
2675 | are permitted. */ | |
2676 | ||
1356d77d ILT |
2677 | static void |
2678 | parse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2679 | ||
40324362 KR |
2680 | #ifndef TC_PARSE_CONS_EXPRESSION |
2681 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
2682 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
2683 | static void | |
2684 | parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2685 | #endif | |
40324362 KR |
2686 | #ifdef REPEAT_CONS_EXPRESSIONS |
2687 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
2688 | static void | |
2689 | parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2690 | #endif | |
2691 | ||
2692 | /* If we haven't gotten one yet, just call expression. */ | |
2693 | #ifndef TC_PARSE_CONS_EXPRESSION | |
2694 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
2695 | #endif | |
2696 | #endif | |
2697 | ||
6efd877d KR |
2698 | /* worker to do .byte etc statements */ |
2699 | /* clobbers input_line_pointer, checks */ | |
2700 | /* end-of-line. */ | |
86038ada ILT |
2701 | static void |
2702 | cons_worker (nbytes, rva) | |
604633ae | 2703 | register int nbytes; /* 1=.byte, 2=.word, 4=.long */ |
86038ada | 2704 | int rva; |
fecd2382 | 2705 | { |
286cb27a | 2706 | int c; |
6efd877d | 2707 | expressionS exp; |
86038ada | 2708 | char *stop = NULL; |
3dce804d | 2709 | char stopc; |
f8701a3f | 2710 | |
a2a5a4fa KR |
2711 | #ifdef md_flush_pending_output |
2712 | md_flush_pending_output (); | |
2713 | #endif | |
2714 | ||
18c9057f ILT |
2715 | if (flag_mri) |
2716 | stop = mri_comment_field (&stopc); | |
2717 | ||
40324362 | 2718 | if (is_it_end_of_statement ()) |
6efd877d | 2719 | { |
18c9057f | 2720 | mri_comment_end (stop, stopc); |
40324362 KR |
2721 | demand_empty_rest_of_line (); |
2722 | return; | |
6efd877d | 2723 | } |
40324362 | 2724 | |
286cb27a | 2725 | c = 0; |
40324362 | 2726 | do |
6efd877d | 2727 | { |
1356d77d ILT |
2728 | if (flag_mri) |
2729 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
2730 | else | |
2731 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); | |
6594d6b9 KR |
2732 | |
2733 | if (rva) | |
2734 | { | |
2735 | if (exp.X_op == O_symbol) | |
2736 | exp.X_op = O_symbol_rva; | |
2737 | else | |
2738 | as_fatal ("rva without symbol"); | |
2739 | } | |
2740 | emit_expr (&exp, (unsigned int) nbytes); | |
286cb27a | 2741 | ++c; |
40324362 | 2742 | } |
18c9057f | 2743 | while (*input_line_pointer++ == ','); |
40324362 | 2744 | |
286cb27a ILT |
2745 | /* In MRI mode, after an odd number of bytes, we must align to an |
2746 | even word boundary, unless the next instruction is a dc.b, ds.b | |
2747 | or dcb.b. */ | |
2748 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
2749 | mri_pending_align = 1; | |
2750 | ||
40324362 | 2751 | input_line_pointer--; /* Put terminator back into stream. */ |
86038ada ILT |
2752 | |
2753 | if (flag_mri) | |
18c9057f | 2754 | mri_comment_end (stop, stopc); |
86038ada | 2755 | |
40324362 | 2756 | demand_empty_rest_of_line (); |
30d3a445 | 2757 | } |
f8701a3f | 2758 | |
86038ada ILT |
2759 | |
2760 | void | |
2761 | cons (size) | |
2762 | int size; | |
2763 | { | |
2764 | cons_worker (size, 0); | |
2765 | } | |
2766 | ||
2767 | void | |
2768 | s_rva (size) | |
2769 | int size; | |
2770 | { | |
2771 | cons_worker (size, 1); | |
2772 | } | |
2773 | ||
2774 | ||
40324362 KR |
2775 | /* Put the contents of expression EXP into the object file using |
2776 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
f8701a3f | 2777 | |
40324362 KR |
2778 | void |
2779 | emit_expr (exp, nbytes) | |
2780 | expressionS *exp; | |
2781 | unsigned int nbytes; | |
2782 | { | |
5ac34ac3 | 2783 | operatorT op; |
40324362 | 2784 | register char *p; |
80aab579 | 2785 | valueT extra_digit = 0; |
f8701a3f | 2786 | |
40324362 KR |
2787 | /* Don't do anything if we are going to make another pass. */ |
2788 | if (need_pass_2) | |
2789 | return; | |
2790 | ||
5ac34ac3 | 2791 | op = exp->X_op; |
40324362 | 2792 | |
e28c40d7 ILT |
2793 | /* Allow `.word 0' in the absolute section. */ |
2794 | if (now_seg == absolute_section) | |
2795 | { | |
2796 | if (op != O_constant || exp->X_add_number != 0) | |
2797 | as_bad ("attempt to store value in absolute section"); | |
2798 | abs_section_offset += nbytes; | |
2799 | return; | |
2800 | } | |
2801 | ||
80aab579 ILT |
2802 | /* Handle a negative bignum. */ |
2803 | if (op == O_uminus | |
2804 | && exp->X_add_number == 0 | |
2805 | && exp->X_add_symbol->sy_value.X_op == O_big | |
2806 | && exp->X_add_symbol->sy_value.X_add_number > 0) | |
2807 | { | |
2808 | int i; | |
2809 | unsigned long carry; | |
2810 | ||
2811 | exp = &exp->X_add_symbol->sy_value; | |
2812 | ||
2813 | /* Negate the bignum: one's complement each digit and add 1. */ | |
2814 | carry = 1; | |
2815 | for (i = 0; i < exp->X_add_number; i++) | |
2816 | { | |
2817 | unsigned long next; | |
2818 | ||
2819 | next = (((~ (generic_bignum[i] & LITTLENUM_MASK)) | |
2820 | & LITTLENUM_MASK) | |
2821 | + carry); | |
2822 | generic_bignum[i] = next & LITTLENUM_MASK; | |
2823 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
2824 | } | |
2825 | ||
2826 | /* We can ignore any carry out, because it will be handled by | |
2827 | extra_digit if it is needed. */ | |
2828 | ||
2829 | extra_digit = (valueT) -1; | |
2830 | op = O_big; | |
2831 | } | |
2832 | ||
5ac34ac3 | 2833 | if (op == O_absent || op == O_illegal) |
6efd877d | 2834 | { |
5ac34ac3 ILT |
2835 | as_warn ("zero assumed for missing expression"); |
2836 | exp->X_add_number = 0; | |
2837 | op = O_constant; | |
6efd877d | 2838 | } |
80aab579 | 2839 | else if (op == O_big && exp->X_add_number <= 0) |
6efd877d | 2840 | { |
80aab579 | 2841 | as_bad ("floating point number invalid; zero assumed"); |
40324362 | 2842 | exp->X_add_number = 0; |
5ac34ac3 | 2843 | op = O_constant; |
40324362 | 2844 | } |
5ac34ac3 | 2845 | else if (op == O_register) |
6efd877d | 2846 | { |
5ac34ac3 ILT |
2847 | as_warn ("register value used as expression"); |
2848 | op = O_constant; | |
40324362 | 2849 | } |
6efd877d | 2850 | |
604633ae | 2851 | p = frag_more ((int) nbytes); |
6efd877d | 2852 | |
40324362 KR |
2853 | #ifndef WORKING_DOT_WORD |
2854 | /* If we have the difference of two symbols in a word, save it on | |
2855 | the broken_words list. See the code in write.c. */ | |
5ac34ac3 | 2856 | if (op == O_subtract && nbytes == 2) |
40324362 KR |
2857 | { |
2858 | struct broken_word *x; | |
2859 | ||
2860 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
2861 | x->next_broken_word = broken_words; | |
2862 | broken_words = x; | |
2863 | x->frag = frag_now; | |
2864 | x->word_goes_here = p; | |
2865 | x->dispfrag = 0; | |
2866 | x->add = exp->X_add_symbol; | |
5ac34ac3 | 2867 | x->sub = exp->X_op_symbol; |
40324362 KR |
2868 | x->addnum = exp->X_add_number; |
2869 | x->added = 0; | |
2870 | new_broken_words++; | |
2871 | return; | |
2872 | } | |
f8701a3f | 2873 | #endif |
6efd877d | 2874 | |
80aab579 ILT |
2875 | /* If we have an integer, but the number of bytes is too large to |
2876 | pass to md_number_to_chars, handle it as a bignum. */ | |
2877 | if (op == O_constant && nbytes > sizeof (valueT)) | |
2878 | { | |
2879 | valueT val; | |
2880 | int gencnt; | |
2881 | ||
2882 | if (! exp->X_unsigned && exp->X_add_number < 0) | |
2883 | extra_digit = (valueT) -1; | |
2884 | val = (valueT) exp->X_add_number; | |
2885 | gencnt = 0; | |
2886 | do | |
2887 | { | |
2888 | generic_bignum[gencnt] = val & LITTLENUM_MASK; | |
2889 | val >>= LITTLENUM_NUMBER_OF_BITS; | |
2890 | ++gencnt; | |
2891 | } | |
2892 | while (val != 0); | |
2893 | op = exp->X_op = O_big; | |
2894 | exp->X_add_number = gencnt; | |
2895 | } | |
2896 | ||
5ac34ac3 | 2897 | if (op == O_constant) |
40324362 | 2898 | { |
44ce2f32 DE |
2899 | register valueT get; |
2900 | register valueT use; | |
2901 | register valueT mask; | |
2902 | register valueT unmask; | |
40324362 KR |
2903 | |
2904 | /* JF << of >= number of bits in the object is undefined. In | |
2905 | particular SPARC (Sun 4) has problems */ | |
44ce2f32 | 2906 | if (nbytes >= sizeof (valueT)) |
40324362 KR |
2907 | mask = 0; |
2908 | else | |
d2550c72 | 2909 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); /* Don't store these bits. */ |
6efd877d | 2910 | |
40324362 | 2911 | unmask = ~mask; /* Do store these bits. */ |
6efd877d | 2912 | |
40324362 KR |
2913 | #ifdef NEVER |
2914 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
2915 | mask = ~(unmask >> 1); /* Includes sign bit now. */ | |
2916 | #endif | |
6efd877d | 2917 | |
40324362 KR |
2918 | get = exp->X_add_number; |
2919 | use = get & unmask; | |
2920 | if ((get & mask) != 0 && (get & mask) != mask) | |
2921 | { /* Leading bits contain both 0s & 1s. */ | |
58d4951d | 2922 | as_warn ("Value 0x%lx truncated to 0x%lx.", get, use); |
40324362 | 2923 | } |
604633ae | 2924 | /* put bytes in right order. */ |
44ce2f32 | 2925 | md_number_to_chars (p, use, (int) nbytes); |
40324362 | 2926 | } |
80aab579 ILT |
2927 | else if (op == O_big) |
2928 | { | |
2929 | int size; | |
2930 | LITTLENUM_TYPE *nums; | |
2931 | ||
2932 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
2933 | ||
2934 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
2935 | if (nbytes < size) | |
2936 | { | |
2937 | as_warn ("Bignum truncated to %d bytes", nbytes); | |
2938 | size = nbytes; | |
2939 | } | |
2940 | ||
2941 | if (target_big_endian) | |
2942 | { | |
2943 | while (nbytes > size) | |
2944 | { | |
2945 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
2946 | nbytes -= CHARS_PER_LITTLENUM; | |
2947 | p += CHARS_PER_LITTLENUM; | |
2948 | } | |
2949 | ||
2950 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
2951 | while (size > 0) | |
2952 | { | |
2953 | --nums; | |
2954 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
2955 | size -= CHARS_PER_LITTLENUM; | |
2956 | p += CHARS_PER_LITTLENUM; | |
2957 | } | |
2958 | } | |
2959 | else | |
2960 | { | |
2961 | nums = generic_bignum; | |
2962 | while (size > 0) | |
2963 | { | |
2964 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
2965 | ++nums; | |
2966 | size -= CHARS_PER_LITTLENUM; | |
2967 | p += CHARS_PER_LITTLENUM; | |
2968 | nbytes -= CHARS_PER_LITTLENUM; | |
2969 | } | |
2970 | ||
2971 | while (nbytes > 0) | |
2972 | { | |
2973 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
2974 | nbytes -= CHARS_PER_LITTLENUM; | |
2975 | p += CHARS_PER_LITTLENUM; | |
2976 | } | |
2977 | } | |
2978 | } | |
40324362 KR |
2979 | else |
2980 | { | |
1fbfe108 | 2981 | memset (p, 0, nbytes); |
6efd877d | 2982 | |
40324362 KR |
2983 | /* Now we need to generate a fixS to record the symbol value. |
2984 | This is easy for BFD. For other targets it can be more | |
2985 | complex. For very complex cases (currently, the HPPA and | |
2986 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
2987 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
2988 | the name of the reloc code that should be stored in the fixS. | |
2989 | If neither is defined, the code uses NO_RELOC if it is | |
2990 | defined, and otherwise uses 0. */ | |
6efd877d | 2991 | |
40324362 | 2992 | #ifdef BFD_ASSEMBLER |
4064305e SS |
2993 | #ifdef TC_CONS_FIX_NEW |
2994 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
2995 | #else | |
604633ae | 2996 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 2997 | /* @@ Should look at CPU word size. */ |
ba71c54d | 2998 | nbytes == 2 ? BFD_RELOC_16 |
86038ada ILT |
2999 | : nbytes == 8 ? BFD_RELOC_64 |
3000 | : BFD_RELOC_32); | |
4064305e | 3001 | #endif |
40324362 KR |
3002 | #else |
3003 | #ifdef TC_CONS_FIX_NEW | |
3004 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3005 | #else | |
3006 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
3007 | it is defined, otherwise use NO_RELOC if it is defined, | |
3008 | otherwise use 0. */ | |
3009 | #ifndef TC_CONS_RELOC | |
3010 | #ifdef NO_RELOC | |
3011 | #define TC_CONS_RELOC NO_RELOC | |
3012 | #else | |
3013 | #define TC_CONS_RELOC 0 | |
3014 | #endif | |
3015 | #endif | |
80aab579 | 3016 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 3017 | TC_CONS_RELOC); |
40324362 KR |
3018 | #endif /* TC_CONS_FIX_NEW */ |
3019 | #endif /* BFD_ASSEMBLER */ | |
3020 | } | |
3021 | } | |
3022 | \f | |
3023 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
6efd877d | 3024 | |
40324362 KR |
3025 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as |
3026 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3027 | then pack them all together. We do a little better in that we allow | |
3028 | them in words, longs, etc. and we'll pack them in target byte order | |
3029 | for you. | |
6efd877d | 3030 | |
40324362 KR |
3031 | The rules are: pack least significat bit first, if a field doesn't |
3032 | entirely fit, put it in the next unit. Overflowing the bitfield is | |
3033 | explicitly *not* even a warning. The bitwidth should be considered | |
3034 | a "mask". | |
6efd877d | 3035 | |
40324362 KR |
3036 | To use this function the tc-XXX.h file should define |
3037 | BITFIELD_CONS_EXPRESSIONS. */ | |
f8701a3f | 3038 | |
40324362 KR |
3039 | static void |
3040 | parse_bitfield_cons (exp, nbytes) | |
3041 | expressionS *exp; | |
3042 | unsigned int nbytes; | |
3043 | { | |
3044 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3045 | char *hold = input_line_pointer; | |
f8701a3f | 3046 | |
5ac34ac3 | 3047 | (void) expression (exp); |
f8701a3f | 3048 | |
40324362 KR |
3049 | if (*input_line_pointer == ':') |
3050 | { /* bitfields */ | |
3051 | long value = 0; | |
f8701a3f | 3052 | |
40324362 KR |
3053 | for (;;) |
3054 | { | |
3055 | unsigned long width; | |
f8701a3f | 3056 | |
40324362 KR |
3057 | if (*input_line_pointer != ':') |
3058 | { | |
3059 | input_line_pointer = hold; | |
3060 | break; | |
3061 | } /* next piece is not a bitfield */ | |
3062 | ||
3063 | /* In the general case, we can't allow | |
3064 | full expressions with symbol | |
3065 | differences and such. The relocation | |
3066 | entries for symbols not defined in this | |
3067 | assembly would require arbitrary field | |
3068 | widths, positions, and masks which most | |
3069 | of our current object formats don't | |
3070 | support. | |
cd3b81bd | 3071 | |
40324362 KR |
3072 | In the specific case where a symbol |
3073 | *is* defined in this assembly, we | |
3074 | *could* build fixups and track it, but | |
3075 | this could lead to confusion for the | |
3076 | backends. I'm lazy. I'll take any | |
3077 | SEG_ABSOLUTE. I think that means that | |
3078 | you can use a previous .set or | |
3079 | .equ type symbol. xoxorich. */ | |
3080 | ||
5ac34ac3 | 3081 | if (exp->X_op == O_absent) |
6efd877d | 3082 | { |
5ac34ac3 | 3083 | as_warn ("using a bit field width of zero"); |
40324362 | 3084 | exp->X_add_number = 0; |
5ac34ac3 | 3085 | exp->X_op = O_constant; |
40324362 KR |
3086 | } /* implied zero width bitfield */ |
3087 | ||
5ac34ac3 | 3088 | if (exp->X_op != O_constant) |
6efd877d | 3089 | { |
40324362 | 3090 | *input_line_pointer = '\0'; |
5ac34ac3 | 3091 | as_bad ("field width \"%s\" too complex for a bitfield", hold); |
40324362 KR |
3092 | *input_line_pointer = ':'; |
3093 | demand_empty_rest_of_line (); | |
3094 | return; | |
3095 | } /* too complex */ | |
3096 | ||
3097 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
9471a360 | 3098 | { |
80aab579 | 3099 | as_warn ("field width %lu too big to fit in %d bytes: truncated to %d bits", |
40324362 KR |
3100 | width, nbytes, (BITS_PER_CHAR * nbytes)); |
3101 | width = BITS_PER_CHAR * nbytes; | |
3102 | } /* too big */ | |
3103 | ||
3104 | if (width > bits_available) | |
9471a360 | 3105 | { |
40324362 KR |
3106 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ |
3107 | input_line_pointer = hold; | |
3108 | exp->X_add_number = value; | |
3109 | break; | |
3110 | } /* won't fit */ | |
3111 | ||
3112 | hold = ++input_line_pointer; /* skip ':' */ | |
3113 | ||
5ac34ac3 ILT |
3114 | (void) expression (exp); |
3115 | if (exp->X_op != O_constant) | |
9471a360 | 3116 | { |
40324362 KR |
3117 | char cache = *input_line_pointer; |
3118 | ||
3119 | *input_line_pointer = '\0'; | |
5ac34ac3 | 3120 | as_bad ("field value \"%s\" too complex for a bitfield", hold); |
40324362 KR |
3121 | *input_line_pointer = cache; |
3122 | demand_empty_rest_of_line (); | |
3123 | return; | |
3124 | } /* too complex */ | |
3125 | ||
5ac34ac3 ILT |
3126 | value |= ((~(-1 << width) & exp->X_add_number) |
3127 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
40324362 KR |
3128 | |
3129 | if ((bits_available -= width) == 0 | |
3130 | || is_it_end_of_statement () | |
3131 | || *input_line_pointer != ',') | |
3132 | { | |
3133 | break; | |
3134 | } /* all the bitfields we're gonna get */ | |
3135 | ||
3136 | hold = ++input_line_pointer; | |
5ac34ac3 | 3137 | (void) expression (exp); |
40324362 KR |
3138 | } /* forever loop */ |
3139 | ||
3140 | exp->X_add_number = value; | |
5ac34ac3 | 3141 | exp->X_op = O_constant; |
80aab579 | 3142 | exp->X_unsigned = 1; |
40324362 KR |
3143 | } /* if looks like a bitfield */ |
3144 | } /* parse_bitfield_cons() */ | |
3145 | ||
3146 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
3147 | \f | |
1356d77d | 3148 | /* Handle an MRI style string expression. */ |
40324362 KR |
3149 | |
3150 | static void | |
3151 | parse_mri_cons (exp, nbytes) | |
3152 | expressionS *exp; | |
3153 | unsigned int nbytes; | |
3154 | { | |
1356d77d ILT |
3155 | if (*input_line_pointer != '\'' |
3156 | && (input_line_pointer[1] != '\'' | |
3157 | || (*input_line_pointer != 'A' | |
3158 | && *input_line_pointer != 'E'))) | |
3159 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3160 | else | |
40324362 | 3161 | { |
40324362 KR |
3162 | int scan = 0; |
3163 | unsigned int result = 0; | |
1356d77d ILT |
3164 | |
3165 | /* An MRI style string. Cut into as many bytes as will fit into | |
3166 | a nbyte chunk, left justify if necessary, and separate with | |
3167 | commas so we can try again later. */ | |
3168 | if (*input_line_pointer == 'A') | |
3169 | ++input_line_pointer; | |
3170 | else if (*input_line_pointer == 'E') | |
3171 | { | |
3172 | as_bad ("EBCDIC constants are not supported"); | |
3173 | ++input_line_pointer; | |
3174 | } | |
3175 | ||
40324362 KR |
3176 | input_line_pointer++; |
3177 | for (scan = 0; scan < nbytes; scan++) | |
3178 | { | |
3179 | if (*input_line_pointer == '\'') | |
3180 | { | |
3181 | if (input_line_pointer[1] == '\'') | |
6efd877d | 3182 | { |
40324362 | 3183 | input_line_pointer++; |
f8701a3f | 3184 | } |
40324362 KR |
3185 | else |
3186 | break; | |
9471a360 | 3187 | } |
40324362 KR |
3188 | result = (result << 8) | (*input_line_pointer++); |
3189 | } | |
f8701a3f | 3190 | |
40324362 KR |
3191 | /* Left justify */ |
3192 | while (scan < nbytes) | |
3193 | { | |
3194 | result <<= 8; | |
3195 | scan++; | |
3196 | } | |
3197 | /* Create correct expression */ | |
5ac34ac3 | 3198 | exp->X_op = O_constant; |
40324362 | 3199 | exp->X_add_number = result; |
40324362 KR |
3200 | /* Fake it so that we can read the next char too */ |
3201 | if (input_line_pointer[0] != '\'' || | |
3202 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
3203 | { | |
3204 | input_line_pointer -= 2; | |
3205 | input_line_pointer[0] = ','; | |
3206 | input_line_pointer[1] = '\''; | |
3207 | } | |
3208 | else | |
3209 | input_line_pointer++; | |
3210 | } | |
40324362 | 3211 | } |
40324362 KR |
3212 | \f |
3213 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3214 | ||
3215 | /* Parse a repeat expression for cons. This is used by the MIPS | |
3216 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
3217 | object file COUNT times. | |
3218 | ||
3219 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
3220 | ||
3221 | static void | |
3222 | parse_repeat_cons (exp, nbytes) | |
3223 | expressionS *exp; | |
3224 | unsigned int nbytes; | |
3225 | { | |
3226 | expressionS count; | |
40324362 KR |
3227 | register int i; |
3228 | ||
3229 | expression (exp); | |
3230 | ||
3231 | if (*input_line_pointer != ':') | |
3232 | { | |
3233 | /* No repeat count. */ | |
3234 | return; | |
3235 | } | |
3236 | ||
3237 | ++input_line_pointer; | |
5ac34ac3 ILT |
3238 | expression (&count); |
3239 | if (count.X_op != O_constant | |
40324362 KR |
3240 | || count.X_add_number <= 0) |
3241 | { | |
3242 | as_warn ("Unresolvable or nonpositive repeat count; using 1"); | |
3243 | return; | |
3244 | } | |
3245 | ||
3246 | /* The cons function is going to output this expression once. So we | |
3247 | output it count - 1 times. */ | |
3248 | for (i = count.X_add_number - 1; i > 0; i--) | |
3249 | emit_expr (exp, nbytes); | |
3250 | } | |
3251 | ||
3252 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
fecd2382 | 3253 | \f |
e28c40d7 ILT |
3254 | /* Parse a floating point number represented as a hex constant. This |
3255 | permits users to specify the exact bits they want in the floating | |
3256 | point number. */ | |
3257 | ||
3258 | static int | |
3259 | hex_float (float_type, bytes) | |
3260 | int float_type; | |
3261 | char *bytes; | |
3262 | { | |
3263 | int length; | |
3264 | int i; | |
3265 | ||
3266 | switch (float_type) | |
3267 | { | |
3268 | case 'f': | |
3269 | case 'F': | |
3270 | case 's': | |
3271 | case 'S': | |
3272 | length = 4; | |
3273 | break; | |
3274 | ||
3275 | case 'd': | |
3276 | case 'D': | |
3277 | case 'r': | |
3278 | case 'R': | |
3279 | length = 8; | |
3280 | break; | |
3281 | ||
3282 | case 'x': | |
3283 | case 'X': | |
3284 | length = 12; | |
3285 | break; | |
3286 | ||
3287 | case 'p': | |
3288 | case 'P': | |
3289 | length = 12; | |
3290 | break; | |
3291 | ||
3292 | default: | |
3293 | as_bad ("Unknown floating type type '%c'", float_type); | |
3294 | return -1; | |
3295 | } | |
3296 | ||
3297 | /* It would be nice if we could go through expression to parse the | |
3298 | hex constant, but if we get a bignum it's a pain to sort it into | |
3299 | the buffer correctly. */ | |
3300 | i = 0; | |
3301 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
3302 | { | |
3303 | int d; | |
3304 | ||
3305 | /* The MRI assembler accepts arbitrary underscores strewn about | |
3306 | through the hex constant, so we ignore them as well. */ | |
3307 | if (*input_line_pointer == '_') | |
3308 | { | |
3309 | ++input_line_pointer; | |
3310 | continue; | |
3311 | } | |
3312 | ||
3313 | if (i >= length) | |
3314 | { | |
3315 | as_warn ("Floating point constant too large"); | |
3316 | return -1; | |
3317 | } | |
3318 | d = hex_value (*input_line_pointer) << 4; | |
3319 | ++input_line_pointer; | |
3320 | while (*input_line_pointer == '_') | |
3321 | ++input_line_pointer; | |
3322 | if (hex_p (*input_line_pointer)) | |
3323 | { | |
3324 | d += hex_value (*input_line_pointer); | |
3325 | ++input_line_pointer; | |
3326 | } | |
a920b693 ILT |
3327 | if (target_big_endian) |
3328 | bytes[i] = d; | |
3329 | else | |
3330 | bytes[length - i - 1] = d; | |
3331 | ++i; | |
e28c40d7 ILT |
3332 | } |
3333 | ||
3334 | if (i < length) | |
a920b693 ILT |
3335 | { |
3336 | if (target_big_endian) | |
3337 | memset (bytes + i, 0, length - i); | |
3338 | else | |
3339 | memset (bytes, 0, length - i); | |
3340 | } | |
e28c40d7 ILT |
3341 | |
3342 | return length; | |
3343 | } | |
3344 | ||
fecd2382 RP |
3345 | /* |
3346 | * float_cons() | |
3347 | * | |
3348 | * CONStruct some more frag chars of .floats .ffloats etc. | |
3349 | * Makes 0 or more new frags. | |
3350 | * If need_pass_2 == 1, no frags are emitted. | |
3351 | * This understands only floating literals, not expressions. Sorry. | |
3352 | * | |
3353 | * A floating constant is defined by atof_generic(), except it is preceded | |
3354 | * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
3355 | * reading, I decided to be incompatible. This always tries to give you | |
3356 | * rounded bits to the precision of the pseudo-op. Former AS did premature | |
3357 | * truncatation, restored noisy bits instead of trailing 0s AND gave you | |
3358 | * a choice of 2 flavours of noise according to which of 2 floating-point | |
3359 | * scanners you directed AS to use. | |
3360 | * | |
3361 | * In: input_line_pointer->whitespace before, or '0' of flonum. | |
3362 | * | |
3363 | */ | |
3364 | ||
ba71c54d KR |
3365 | void |
3366 | float_cons (float_type) | |
6efd877d | 3367 | /* Clobbers input_line-pointer, checks end-of-line. */ |
f8701a3f | 3368 | register int float_type; /* 'f':.ffloat ... 'F':.float ... */ |
fecd2382 | 3369 | { |
6efd877d | 3370 | register char *p; |
6efd877d KR |
3371 | int length; /* Number of chars in an object. */ |
3372 | register char *err; /* Error from scanning floating literal. */ | |
3373 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
f8701a3f | 3374 | |
6efd877d | 3375 | if (is_it_end_of_statement ()) |
f8701a3f | 3376 | { |
1e9cf565 ILT |
3377 | demand_empty_rest_of_line (); |
3378 | return; | |
f8701a3f | 3379 | } |
1e9cf565 ILT |
3380 | |
3381 | do | |
f8701a3f SC |
3382 | { |
3383 | /* input_line_pointer->1st char of a flonum (we hope!). */ | |
6efd877d | 3384 | SKIP_WHITESPACE (); |
1e9cf565 | 3385 | |
f8701a3f SC |
3386 | /* Skip any 0{letter} that may be present. Don't even check if the |
3387 | * letter is legal. Someone may invent a "z" format and this routine | |
3388 | * has no use for such information. Lusers beware: you get | |
3389 | * diagnostics if your input is ill-conditioned. | |
3390 | */ | |
6efd877d KR |
3391 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) |
3392 | input_line_pointer += 2; | |
f8701a3f | 3393 | |
1356d77d ILT |
3394 | /* Accept :xxxx, where the x's are hex digits, for a floating |
3395 | point with the exact digits specified. */ | |
3396 | if (input_line_pointer[0] == ':') | |
f8701a3f | 3397 | { |
e28c40d7 ILT |
3398 | ++input_line_pointer; |
3399 | length = hex_float (float_type, temp); | |
3400 | if (length < 0) | |
1356d77d | 3401 | { |
1356d77d ILT |
3402 | ignore_rest_of_line (); |
3403 | return; | |
3404 | } | |
1356d77d ILT |
3405 | } |
3406 | else | |
3407 | { | |
3408 | err = md_atof (float_type, temp, &length); | |
3409 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3410 | know (length > 0); | |
3411 | if (err) | |
3412 | { | |
3413 | as_bad ("Bad floating literal: %s", err); | |
3414 | ignore_rest_of_line (); | |
3415 | return; | |
3416 | } | |
f8701a3f | 3417 | } |
1e9cf565 ILT |
3418 | |
3419 | if (!need_pass_2) | |
f8701a3f | 3420 | { |
1e9cf565 ILT |
3421 | int count; |
3422 | ||
3423 | count = 1; | |
3424 | ||
3425 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3426 | if (*input_line_pointer == ':') | |
3427 | { | |
1e9cf565 ILT |
3428 | expressionS count_exp; |
3429 | ||
3430 | ++input_line_pointer; | |
5ac34ac3 ILT |
3431 | expression (&count_exp); |
3432 | if (count_exp.X_op != O_constant | |
1e9cf565 ILT |
3433 | || count_exp.X_add_number <= 0) |
3434 | { | |
5ac34ac3 | 3435 | as_warn ("unresolvable or nonpositive repeat count; using 1"); |
1e9cf565 ILT |
3436 | } |
3437 | else | |
3438 | count = count_exp.X_add_number; | |
3439 | } | |
3440 | #endif | |
3441 | ||
3442 | while (--count >= 0) | |
a39116f1 | 3443 | { |
f8701a3f | 3444 | p = frag_more (length); |
604633ae | 3445 | memcpy (p, temp, (unsigned int) length); |
a39116f1 | 3446 | } |
542e1629 | 3447 | } |
1e9cf565 | 3448 | SKIP_WHITESPACE (); |
f8701a3f | 3449 | } |
1e9cf565 ILT |
3450 | while (*input_line_pointer++ == ','); |
3451 | ||
3452 | --input_line_pointer; /* Put terminator back into stream. */ | |
6efd877d | 3453 | demand_empty_rest_of_line (); |
f8701a3f | 3454 | } /* float_cons() */ |
fecd2382 RP |
3455 | \f |
3456 | /* | |
3457 | * stringer() | |
3458 | * | |
3459 | * We read 0 or more ',' seperated, double-quoted strings. | |
3460 | * | |
3461 | * Caller should have checked need_pass_2 is FALSE because we don't check it. | |
3462 | */ | |
a39116f1 RP |
3463 | |
3464 | ||
6efd877d KR |
3465 | void |
3466 | stringer (append_zero) /* Worker to do .ascii etc statements. */ | |
3467 | /* Checks end-of-line. */ | |
f8701a3f | 3468 | register int append_zero; /* 0: don't append '\0', else 1 */ |
fecd2382 | 3469 | { |
f8701a3f | 3470 | register unsigned int c; |
6efd877d | 3471 | |
a2a5a4fa KR |
3472 | #ifdef md_flush_pending_output |
3473 | md_flush_pending_output (); | |
3474 | #endif | |
3475 | ||
f8701a3f SC |
3476 | /* |
3477 | * The following awkward logic is to parse ZERO or more strings, | |
3478 | * comma seperated. Recall a string expression includes spaces | |
3479 | * before the opening '\"' and spaces after the closing '\"'. | |
3480 | * We fake a leading ',' if there is (supposed to be) | |
3481 | * a 1st, expression. We keep demanding expressions for each | |
3482 | * ','. | |
3483 | */ | |
6efd877d KR |
3484 | if (is_it_end_of_statement ()) |
3485 | { | |
3486 | c = 0; /* Skip loop. */ | |
3487 | ++input_line_pointer; /* Compensate for end of loop. */ | |
3488 | } | |
f8701a3f | 3489 | else |
6efd877d KR |
3490 | { |
3491 | c = ','; /* Do loop. */ | |
3492 | } | |
3493 | while (c == ',' || c == '<' || c == '"') | |
3494 | { | |
3495 | SKIP_WHITESPACE (); | |
3496 | switch (*input_line_pointer) | |
3497 | { | |
3498 | case '\"': | |
3499 | ++input_line_pointer; /*->1st char of string. */ | |
3500 | while (is_a_char (c = next_char_of_string ())) | |
3501 | { | |
3502 | FRAG_APPEND_1_CHAR (c); | |
3503 | } | |
3504 | if (append_zero) | |
3505 | { | |
3506 | FRAG_APPEND_1_CHAR (0); | |
3507 | } | |
3508 | know (input_line_pointer[-1] == '\"'); | |
3509 | break; | |
3510 | case '<': | |
3511 | input_line_pointer++; | |
3512 | c = get_single_number (); | |
3513 | FRAG_APPEND_1_CHAR (c); | |
3514 | if (*input_line_pointer != '>') | |
3515 | { | |
3516 | as_bad ("Expected <nn>"); | |
3517 | } | |
3518 | input_line_pointer++; | |
3519 | break; | |
3520 | case ',': | |
3521 | input_line_pointer++; | |
3522 | break; | |
3523 | } | |
3524 | SKIP_WHITESPACE (); | |
3525 | c = *input_line_pointer; | |
f8701a3f | 3526 | } |
f8701a3f | 3527 | |
6efd877d KR |
3528 | demand_empty_rest_of_line (); |
3529 | } /* stringer() */ | |
fecd2382 | 3530 | \f |
6efd877d | 3531 | /* FIXME-SOMEDAY: I had trouble here on characters with the |
f8701a3f SC |
3532 | high bits set. We'll probably also have trouble with |
3533 | multibyte chars, wide chars, etc. Also be careful about | |
3534 | returning values bigger than 1 byte. xoxorich. */ | |
fecd2382 | 3535 | |
6efd877d KR |
3536 | unsigned int |
3537 | next_char_of_string () | |
3538 | { | |
3539 | register unsigned int c; | |
3540 | ||
3541 | c = *input_line_pointer++ & CHAR_MASK; | |
3542 | switch (c) | |
3543 | { | |
3544 | case '\"': | |
3545 | c = NOT_A_CHAR; | |
3546 | break; | |
3547 | ||
ddb393cf | 3548 | #ifndef NO_STRING_ESCAPES |
6efd877d KR |
3549 | case '\\': |
3550 | switch (c = *input_line_pointer++) | |
3551 | { | |
3552 | case 'b': | |
3553 | c = '\b'; | |
3554 | break; | |
3555 | ||
3556 | case 'f': | |
3557 | c = '\f'; | |
3558 | break; | |
3559 | ||
3560 | case 'n': | |
3561 | c = '\n'; | |
3562 | break; | |
3563 | ||
3564 | case 'r': | |
3565 | c = '\r'; | |
3566 | break; | |
3567 | ||
3568 | case 't': | |
3569 | c = '\t'; | |
3570 | break; | |
3571 | ||
6efd877d KR |
3572 | case 'v': |
3573 | c = '\013'; | |
3574 | break; | |
6efd877d KR |
3575 | |
3576 | case '\\': | |
3577 | case '"': | |
3578 | break; /* As itself. */ | |
3579 | ||
3580 | case '0': | |
3581 | case '1': | |
3582 | case '2': | |
3583 | case '3': | |
3584 | case '4': | |
3585 | case '5': | |
3586 | case '6': | |
3587 | case '7': | |
3588 | case '8': | |
3589 | case '9': | |
3590 | { | |
3591 | long number; | |
d4c8cbd8 | 3592 | int i; |
6efd877d | 3593 | |
d4c8cbd8 | 3594 | for (i = 0, number = 0; isdigit (c) && i < 3; c = *input_line_pointer++, i++) |
6efd877d KR |
3595 | { |
3596 | number = number * 8 + c - '0'; | |
3597 | } | |
3598 | c = number & 0xff; | |
3599 | } | |
3600 | --input_line_pointer; | |
3601 | break; | |
3602 | ||
d4c8cbd8 JL |
3603 | case 'x': |
3604 | case 'X': | |
3605 | { | |
3606 | long number; | |
3607 | ||
3608 | number = 0; | |
3609 | c = *input_line_pointer++; | |
3610 | while (isxdigit (c)) | |
3611 | { | |
3612 | if (isdigit (c)) | |
3613 | number = number * 16 + c - '0'; | |
3614 | else if (isupper (c)) | |
3615 | number = number * 16 + c - 'A' + 10; | |
3616 | else | |
3617 | number = number * 16 + c - 'a' + 10; | |
3618 | c = *input_line_pointer++; | |
3619 | } | |
3620 | c = number & 0xff; | |
3621 | --input_line_pointer; | |
3622 | } | |
3623 | break; | |
3624 | ||
6efd877d KR |
3625 | case '\n': |
3626 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ | |
3627 | as_warn ("Unterminated string: Newline inserted."); | |
3628 | c = '\n'; | |
3629 | break; | |
3630 | ||
3631 | default: | |
3632 | ||
fecd2382 | 3633 | #ifdef ONLY_STANDARD_ESCAPES |
6efd877d KR |
3634 | as_bad ("Bad escaped character in string, '?' assumed"); |
3635 | c = '?'; | |
fecd2382 | 3636 | #endif /* ONLY_STANDARD_ESCAPES */ |
6efd877d KR |
3637 | |
3638 | break; | |
3639 | } /* switch on escaped char */ | |
3640 | break; | |
ddb393cf | 3641 | #endif /* ! defined (NO_STRING_ESCAPES) */ |
6efd877d KR |
3642 | |
3643 | default: | |
3644 | break; | |
3645 | } /* switch on char */ | |
3646 | return (c); | |
3647 | } /* next_char_of_string() */ | |
fecd2382 RP |
3648 | \f |
3649 | static segT | |
f8701a3f | 3650 | get_segmented_expression (expP) |
6efd877d | 3651 | register expressionS *expP; |
fecd2382 | 3652 | { |
6efd877d | 3653 | register segT retval; |
f8701a3f | 3654 | |
9471a360 | 3655 | retval = expression (expP); |
5ac34ac3 ILT |
3656 | if (expP->X_op == O_illegal |
3657 | || expP->X_op == O_absent | |
3658 | || expP->X_op == O_big) | |
f8701a3f | 3659 | { |
5ac34ac3 ILT |
3660 | as_bad ("expected address expression; zero assumed"); |
3661 | expP->X_op = O_constant; | |
6efd877d | 3662 | expP->X_add_number = 0; |
5ac34ac3 | 3663 | retval = absolute_section; |
f8701a3f | 3664 | } |
5ac34ac3 | 3665 | return retval; |
fecd2382 RP |
3666 | } |
3667 | ||
6efd877d KR |
3668 | static segT |
3669 | get_known_segmented_expression (expP) | |
3670 | register expressionS *expP; | |
fecd2382 | 3671 | { |
6efd877d | 3672 | register segT retval; |
f8701a3f | 3673 | |
9471a360 | 3674 | if ((retval = get_segmented_expression (expP)) == undefined_section) |
f8701a3f | 3675 | { |
5ac34ac3 ILT |
3676 | /* There is no easy way to extract the undefined symbol from the |
3677 | expression. */ | |
3678 | if (expP->X_add_symbol != NULL | |
3679 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
3680 | as_warn ("symbol \"%s\" undefined; zero assumed", | |
3681 | S_GET_NAME (expP->X_add_symbol)); | |
f8701a3f | 3682 | else |
5ac34ac3 ILT |
3683 | as_warn ("some symbol undefined; zero assumed"); |
3684 | retval = absolute_section; | |
3685 | expP->X_op = O_constant; | |
6efd877d | 3686 | expP->X_add_number = 0; |
f8701a3f | 3687 | } |
5ac34ac3 | 3688 | know (retval == absolute_section || SEG_NORMAL (retval)); |
f8701a3f | 3689 | return (retval); |
fecd2382 RP |
3690 | } /* get_known_segmented_expression() */ |
3691 | ||
58d4951d | 3692 | offsetT |
f8701a3f | 3693 | get_absolute_expression () |
fecd2382 | 3694 | { |
6efd877d | 3695 | expressionS exp; |
f8701a3f | 3696 | |
5ac34ac3 ILT |
3697 | expression (&exp); |
3698 | if (exp.X_op != O_constant) | |
f8701a3f | 3699 | { |
5ac34ac3 | 3700 | if (exp.X_op != O_absent) |
cd3b81bd | 3701 | as_bad ("bad or irreducible absolute expression; zero assumed"); |
6efd877d | 3702 | exp.X_add_number = 0; |
f8701a3f | 3703 | } |
5ac34ac3 | 3704 | return exp.X_add_number; |
fecd2382 RP |
3705 | } |
3706 | ||
6efd877d KR |
3707 | char /* return terminator */ |
3708 | get_absolute_expression_and_terminator (val_pointer) | |
3709 | long *val_pointer; /* return value of expression */ | |
fecd2382 | 3710 | { |
58d4951d ILT |
3711 | /* FIXME: val_pointer should probably be offsetT *. */ |
3712 | *val_pointer = (long) get_absolute_expression (); | |
6efd877d | 3713 | return (*input_line_pointer++); |
fecd2382 RP |
3714 | } |
3715 | \f | |
3716 | /* | |
3717 | * demand_copy_C_string() | |
3718 | * | |
3719 | * Like demand_copy_string, but return NULL if the string contains any '\0's. | |
3720 | * Give a warning if that happens. | |
3721 | */ | |
3722 | char * | |
f8701a3f | 3723 | demand_copy_C_string (len_pointer) |
6efd877d | 3724 | int *len_pointer; |
fecd2382 | 3725 | { |
6efd877d | 3726 | register char *s; |
f8701a3f | 3727 | |
6efd877d | 3728 | if ((s = demand_copy_string (len_pointer)) != 0) |
f8701a3f SC |
3729 | { |
3730 | register int len; | |
3731 | ||
6594d6b9 | 3732 | for (len = *len_pointer; len > 0; len--) |
f8701a3f | 3733 | { |
6efd877d | 3734 | if (*s == 0) |
fecd2382 | 3735 | { |
f8701a3f SC |
3736 | s = 0; |
3737 | len = 1; | |
6efd877d KR |
3738 | *len_pointer = 0; |
3739 | as_bad ("This string may not contain \'\\0\'"); | |
fecd2382 | 3740 | } |
f8701a3f SC |
3741 | } |
3742 | } | |
6594d6b9 | 3743 | return s; |
fecd2382 RP |
3744 | } |
3745 | \f | |
3746 | /* | |
3747 | * demand_copy_string() | |
3748 | * | |
3749 | * Demand string, but return a safe (=private) copy of the string. | |
3750 | * Return NULL if we can't read a string here. | |
3751 | */ | |
6ef37255 | 3752 | char * |
6efd877d KR |
3753 | demand_copy_string (lenP) |
3754 | int *lenP; | |
fecd2382 | 3755 | { |
6efd877d KR |
3756 | register unsigned int c; |
3757 | register int len; | |
3758 | char *retval; | |
3759 | ||
3760 | len = 0; | |
3761 | SKIP_WHITESPACE (); | |
3762 | if (*input_line_pointer == '\"') | |
3763 | { | |
3764 | input_line_pointer++; /* Skip opening quote. */ | |
3765 | ||
3766 | while (is_a_char (c = next_char_of_string ())) | |
3767 | { | |
3768 | obstack_1grow (¬es, c); | |
3769 | len++; | |
fecd2382 | 3770 | } |
42ac8fa8 ILT |
3771 | /* JF this next line is so demand_copy_C_string will return a |
3772 | null terminated string. */ | |
6efd877d KR |
3773 | obstack_1grow (¬es, '\0'); |
3774 | retval = obstack_finish (¬es); | |
3775 | } | |
3776 | else | |
3777 | { | |
3778 | as_warn ("Missing string"); | |
3779 | retval = NULL; | |
3780 | ignore_rest_of_line (); | |
3781 | } | |
3782 | *lenP = len; | |
3783 | return (retval); | |
3784 | } /* demand_copy_string() */ | |
fecd2382 RP |
3785 | \f |
3786 | /* | |
3787 | * is_it_end_of_statement() | |
3788 | * | |
3789 | * In: Input_line_pointer->next character. | |
3790 | * | |
3791 | * Do: Skip input_line_pointer over all whitespace. | |
3792 | * | |
3793 | * Out: 1 if input_line_pointer->end-of-line. | |
f8701a3f | 3794 | */ |
6efd877d KR |
3795 | int |
3796 | is_it_end_of_statement () | |
3797 | { | |
3798 | SKIP_WHITESPACE (); | |
58d4951d | 3799 | return (is_end_of_line[(unsigned char) *input_line_pointer]); |
6efd877d | 3800 | } /* is_it_end_of_statement() */ |
fecd2382 | 3801 | |
6efd877d KR |
3802 | void |
3803 | equals (sym_name) | |
3804 | char *sym_name; | |
fecd2382 | 3805 | { |
6efd877d | 3806 | register symbolS *symbolP; /* symbol we are working with */ |
86038ada | 3807 | char *stop; |
18c9057f | 3808 | char stopc; |
f8701a3f SC |
3809 | |
3810 | input_line_pointer++; | |
6efd877d | 3811 | if (*input_line_pointer == '=') |
f8701a3f SC |
3812 | input_line_pointer++; |
3813 | ||
6efd877d | 3814 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') |
f8701a3f SC |
3815 | input_line_pointer++; |
3816 | ||
86038ada | 3817 | if (flag_mri) |
18c9057f | 3818 | stop = mri_comment_field (&stopc); |
86038ada | 3819 | |
6efd877d KR |
3820 | if (sym_name[0] == '.' && sym_name[1] == '\0') |
3821 | { | |
3822 | /* Turn '. = mumble' into a .org mumble */ | |
3823 | register segT segment; | |
3824 | expressionS exp; | |
f8701a3f | 3825 | |
6efd877d KR |
3826 | segment = get_known_segmented_expression (&exp); |
3827 | if (!need_pass_2) | |
e28c40d7 | 3828 | do_org (segment, &exp, 0); |
6efd877d KR |
3829 | } |
3830 | else | |
3831 | { | |
3832 | symbolP = symbol_find_or_make (sym_name); | |
3833 | pseudo_set (symbolP); | |
3834 | } | |
86038ada ILT |
3835 | |
3836 | if (flag_mri) | |
18c9057f | 3837 | mri_comment_end (stop, stopc); |
6efd877d | 3838 | } /* equals() */ |
fecd2382 RP |
3839 | |
3840 | /* .include -- include a file at this point. */ | |
3841 | ||
3842 | /* ARGSUSED */ | |
6efd877d KR |
3843 | void |
3844 | s_include (arg) | |
3845 | int arg; | |
fecd2382 | 3846 | { |
f8701a3f SC |
3847 | char *newbuf; |
3848 | char *filename; | |
3849 | int i; | |
3850 | FILE *try; | |
3851 | char *path; | |
3852 | ||
ca232972 ILT |
3853 | if (! flag_mri) |
3854 | filename = demand_copy_string (&i); | |
3855 | else | |
3856 | { | |
3857 | SKIP_WHITESPACE (); | |
3858 | i = 0; | |
3859 | while (! is_end_of_line[(unsigned char) *input_line_pointer] | |
3860 | && *input_line_pointer != ' ' | |
3861 | && *input_line_pointer != '\t') | |
3862 | { | |
3863 | obstack_1grow (¬es, *input_line_pointer); | |
3864 | ++input_line_pointer; | |
3865 | ++i; | |
3866 | } | |
3867 | obstack_1grow (¬es, '\0'); | |
3868 | filename = obstack_finish (¬es); | |
42ac8fa8 ILT |
3869 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) |
3870 | ++input_line_pointer; | |
ca232972 | 3871 | } |
6efd877d | 3872 | demand_empty_rest_of_line (); |
604633ae | 3873 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); |
6efd877d KR |
3874 | for (i = 0; i < include_dir_count; i++) |
3875 | { | |
3876 | strcpy (path, include_dirs[i]); | |
3877 | strcat (path, "/"); | |
3878 | strcat (path, filename); | |
f2889110 | 3879 | if (0 != (try = fopen (path, "r"))) |
6efd877d KR |
3880 | { |
3881 | fclose (try); | |
3882 | goto gotit; | |
3883 | } | |
3884 | } | |
3885 | free (path); | |
f8701a3f SC |
3886 | path = filename; |
3887 | gotit: | |
3888 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ | |
3889 | newbuf = input_scrub_include_file (path, input_line_pointer); | |
3890 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6efd877d | 3891 | } /* s_include() */ |
fecd2382 | 3892 | |
6efd877d KR |
3893 | void |
3894 | add_include_dir (path) | |
3895 | char *path; | |
fecd2382 | 3896 | { |
f8701a3f SC |
3897 | int i; |
3898 | ||
3899 | if (include_dir_count == 0) | |
3900 | { | |
6efd877d | 3901 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); |
f8701a3f SC |
3902 | include_dirs[0] = "."; /* Current dir */ |
3903 | include_dir_count = 2; | |
3904 | } | |
3905 | else | |
3906 | { | |
3907 | include_dir_count++; | |
6efd877d KR |
3908 | include_dirs = (char **) realloc (include_dirs, |
3909 | include_dir_count * sizeof (*include_dirs)); | |
f8701a3f SC |
3910 | } |
3911 | ||
6efd877d | 3912 | include_dirs[include_dir_count - 1] = path; /* New one */ |
f8701a3f | 3913 | |
6efd877d KR |
3914 | i = strlen (path); |
3915 | if (i > include_dir_maxlen) | |
3916 | include_dir_maxlen = i; | |
3917 | } /* add_include_dir() */ | |
fecd2382 | 3918 | |
6efd877d KR |
3919 | void |
3920 | s_ignore (arg) | |
3921 | int arg; | |
fecd2382 | 3922 | { |
58d4951d | 3923 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
3924 | { |
3925 | ++input_line_pointer; | |
3926 | } | |
3927 | ++input_line_pointer; | |
4064305e SS |
3928 | } |
3929 | ||
604633ae | 3930 | |
6594d6b9 KR |
3931 | void |
3932 | read_print_statistics (file) | |
3933 | FILE *file; | |
3934 | { | |
3935 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
3936 | } | |
3937 | ||
fecd2382 | 3938 | /* end of read.c */ |