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Commit | Line | Data |
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252b5132 | 1 | /* read.c - read a source file - |
f7e42eb4 | 2 | Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
93e914b2 | 3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
e5604d79 | 4 | Free Software Foundation, Inc. |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
59c871b4 | 23 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
041ff4dd NC |
24 | But then, GNU isn't spozed to run on your machine anyway. |
25 | (RMS is so shortsighted sometimes.) */ | |
041ff4dd | 26 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 27 | |
252b5132 | 28 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 29 | grow when we do 4361 style flonums. */ |
252b5132 RH |
30 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
31 | ||
47eebc20 | 32 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
33 | Another group of these functions is in the expr.c module. */ |
34 | ||
252b5132 | 35 | #include "as.h" |
3882b010 | 36 | #include "safe-ctype.h" |
252b5132 RH |
37 | #include "subsegs.h" |
38 | #include "sb.h" | |
39 | #include "macro.h" | |
40 | #include "obstack.h" | |
252b5132 | 41 | #include "ecoff.h" |
54cfded0 | 42 | #include "dw2gencfi.h" |
252b5132 RH |
43 | |
44 | #ifndef TC_START_LABEL | |
d1a6c242 | 45 | #define TC_START_LABEL(x,y) (x == ':') |
252b5132 RH |
46 | #endif |
47 | ||
8684e216 HPN |
48 | /* Set by the object-format or the target. */ |
49 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 50 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 51 | do \ |
d6415f6c AM |
52 | { \ |
53 | if ((SIZE) >= 8) \ | |
54 | (P2VAR) = 3; \ | |
55 | else if ((SIZE) >= 4) \ | |
56 | (P2VAR) = 2; \ | |
57 | else if ((SIZE) >= 2) \ | |
58 | (P2VAR) = 1; \ | |
59 | else \ | |
60 | (P2VAR) = 0; \ | |
041ff4dd NC |
61 | } \ |
62 | while (0) | |
8684e216 HPN |
63 | #endif |
64 | ||
041ff4dd | 65 | char *input_line_pointer; /*->next char of source file to parse. */ |
252b5132 RH |
66 | |
67 | #if BITS_PER_CHAR != 8 | |
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; | |
71 | #endif | |
72 | ||
73 | #ifndef LEX_AT | |
252b5132 RH |
74 | #define LEX_AT 0 |
75 | #endif | |
76 | ||
77 | #ifndef LEX_BR | |
78 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
79 | #define LEX_BR 0 | |
80 | #endif | |
81 | ||
82 | #ifndef LEX_PCT | |
83 | /* The Delta 68k assembler permits % inside label names. */ | |
84 | #define LEX_PCT 0 | |
85 | #endif | |
86 | ||
87 | #ifndef LEX_QM | |
88 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
89 | #define LEX_QM 0 | |
90 | #endif | |
91 | ||
58b5739a | 92 | #ifndef LEX_HASH |
800eeca4 JW |
93 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
94 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
95 | #define LEX_HASH 0 |
96 | #endif | |
97 | ||
252b5132 | 98 | #ifndef LEX_DOLLAR |
252b5132 RH |
99 | #define LEX_DOLLAR 3 |
100 | #endif | |
101 | ||
102 | #ifndef LEX_TILDE | |
103 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
104 | #define LEX_TILDE 0 | |
105 | #endif | |
106 | ||
041ff4dd | 107 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 108 | char lex_type[256] = { |
252b5132 RH |
109 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
110 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 111 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
112 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
113 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
114 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
115 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 116 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
117 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
118 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
124 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
125 | }; | |
126 | ||
041ff4dd NC |
127 | /* In: a character. |
128 | Out: 1 if this character ends a line. */ | |
ef99799a | 129 | char is_end_of_line[256] = { |
252b5132 | 130 | #ifdef CR_EOL |
b75c0c92 | 131 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 132 | #else |
b75c0c92 | 133 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 134 | #endif |
b75c0c92 AM |
135 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
136 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 137 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 150 | }; |
252b5132 | 151 | |
a8a3b3b2 | 152 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
153 | char original_case_string[128]; |
154 | #endif | |
155 | ||
041ff4dd | 156 | /* Functions private to this file. */ |
252b5132 | 157 | |
041ff4dd NC |
158 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
159 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 160 | |
041ff4dd NC |
161 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
162 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
163 | internals manual. */ | |
252b5132 RH |
164 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
165 | ||
041ff4dd | 166 | /* Variables for handling include file directory table. */ |
252b5132 | 167 | |
041ff4dd NC |
168 | /* Table of pointers to directories to search for .include's. */ |
169 | char **include_dirs; | |
170 | ||
171 | /* How many are in the table. */ | |
172 | int include_dir_count; | |
173 | ||
174 | /* Length of longest in table. */ | |
175 | int include_dir_maxlen = 1; | |
252b5132 RH |
176 | |
177 | #ifndef WORKING_DOT_WORD | |
178 | struct broken_word *broken_words; | |
179 | int new_broken_words; | |
180 | #endif | |
181 | ||
182 | /* The current offset into the absolute section. We don't try to | |
183 | build frags in the absolute section, since no data can be stored | |
184 | there. We just keep track of the current offset. */ | |
185 | addressT abs_section_offset; | |
186 | ||
187 | /* If this line had an MRI style label, it is stored in this variable. | |
188 | This is used by some of the MRI pseudo-ops. */ | |
189 | symbolS *line_label; | |
190 | ||
191 | /* This global variable is used to support MRI common sections. We | |
192 | translate such sections into a common symbol. This variable is | |
193 | non-NULL when we are in an MRI common section. */ | |
194 | symbolS *mri_common_symbol; | |
195 | ||
196 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
197 | need to align to an even byte boundary unless the next pseudo-op is | |
198 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
199 | may be needed. */ | |
200 | static int mri_pending_align; | |
201 | ||
202 | #ifndef NO_LISTING | |
203 | #ifdef OBJ_ELF | |
204 | /* This variable is set to be non-zero if the next string we see might | |
205 | be the name of the source file in DWARF debugging information. See | |
206 | the comment in emit_expr for the format we look for. */ | |
207 | static int dwarf_file_string; | |
208 | #endif | |
209 | #endif | |
210 | ||
87c245cc | 211 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd KH |
212 | static void do_align (int, char *, int, int); |
213 | static void s_align (int, int); | |
caa32fe5 | 214 | static void s_altmacro (int); |
057f53c1 | 215 | static void s_bad_end (int); |
05e9452c | 216 | static void s_reloc (int); |
39e6acbd | 217 | static int hex_float (int, char *); |
39e6acbd KH |
218 | static segT get_known_segmented_expression (expressionS * expP); |
219 | static void pobegin (void); | |
220 | static int get_line_sb (sb *); | |
221 | static void generate_file_debug (void); | |
40a4d956 | 222 | static char *_find_end_of_line (char *, int, int); |
252b5132 | 223 | \f |
252b5132 | 224 | void |
39e6acbd | 225 | read_begin (void) |
252b5132 RH |
226 | { |
227 | const char *p; | |
228 | ||
229 | pobegin (); | |
230 | obj_read_begin_hook (); | |
231 | ||
232 | /* Something close -- but not too close -- to a multiple of 1024. | |
233 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
234 | obstack_begin (¬es, chunksize); | |
235 | obstack_begin (&cond_obstack, chunksize); | |
236 | ||
041ff4dd | 237 | /* Use machine dependent syntax. */ |
252b5132 RH |
238 | for (p = line_separator_chars; *p; p++) |
239 | is_end_of_line[(unsigned char) *p] = 1; | |
041ff4dd | 240 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
241 | |
242 | if (flag_mri) | |
243 | lex_type['?'] = 3; | |
244 | } | |
245 | \f | |
cc1bc22a | 246 | #ifndef TC_ADDRESS_BYTES |
cc1bc22a AM |
247 | #define TC_ADDRESS_BYTES address_bytes |
248 | ||
249 | static inline int | |
250 | address_bytes (void) | |
251 | { | |
252 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
253 | contain an address. */ | |
254 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
255 | n |= n >> 1; | |
256 | n |= n >> 2; | |
257 | n += 1; | |
258 | return n; | |
259 | } | |
260 | #endif | |
cc1bc22a | 261 | |
041ff4dd | 262 | /* Set up pseudo-op tables. */ |
252b5132 RH |
263 | |
264 | static struct hash_control *po_hash; | |
265 | ||
ef99799a | 266 | static const pseudo_typeS potable[] = { |
252b5132 RH |
267 | {"abort", s_abort, 0}, |
268 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 269 | {"altmacro", s_altmacro, 1}, |
252b5132 RH |
270 | {"ascii", stringer, 0}, |
271 | {"asciz", stringer, 1}, | |
272 | {"balign", s_align_bytes, 0}, | |
273 | {"balignw", s_align_bytes, -2}, | |
274 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 275 | /* block */ |
252b5132 RH |
276 | {"byte", cons, 1}, |
277 | {"comm", s_comm, 0}, | |
278 | {"common", s_mri_common, 0}, | |
279 | {"common.s", s_mri_common, 1}, | |
280 | {"data", s_data, 0}, | |
281 | {"dc", cons, 2}, | |
cc1bc22a AM |
282 | #ifdef TC_ADDRESS_BYTES |
283 | {"dc.a", cons, 0}, | |
284 | #endif | |
252b5132 RH |
285 | {"dc.b", cons, 1}, |
286 | {"dc.d", float_cons, 'd'}, | |
287 | {"dc.l", cons, 4}, | |
288 | {"dc.s", float_cons, 'f'}, | |
289 | {"dc.w", cons, 2}, | |
290 | {"dc.x", float_cons, 'x'}, | |
291 | {"dcb", s_space, 2}, | |
292 | {"dcb.b", s_space, 1}, | |
293 | {"dcb.d", s_float_space, 'd'}, | |
294 | {"dcb.l", s_space, 4}, | |
295 | {"dcb.s", s_float_space, 'f'}, | |
296 | {"dcb.w", s_space, 2}, | |
297 | {"dcb.x", s_float_space, 'x'}, | |
298 | {"ds", s_space, 2}, | |
299 | {"ds.b", s_space, 1}, | |
300 | {"ds.d", s_space, 8}, | |
301 | {"ds.l", s_space, 4}, | |
302 | {"ds.p", s_space, 12}, | |
303 | {"ds.s", s_space, 4}, | |
304 | {"ds.w", s_space, 2}, | |
305 | {"ds.x", s_space, 12}, | |
306 | {"debug", s_ignore, 0}, | |
307 | #ifdef S_SET_DESC | |
308 | {"desc", s_desc, 0}, | |
309 | #endif | |
041ff4dd | 310 | /* dim */ |
252b5132 | 311 | {"double", float_cons, 'd'}, |
041ff4dd NC |
312 | /* dsect */ |
313 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
314 | {"else", s_else, 0}, |
315 | {"elsec", s_else, 0}, | |
3fd9f047 | 316 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
317 | {"end", s_end, 0}, |
318 | {"endc", s_endif, 0}, | |
319 | {"endfunc", s_func, 1}, | |
320 | {"endif", s_endif, 0}, | |
057f53c1 JB |
321 | {"endm", s_bad_end, 0}, |
322 | {"endr", s_bad_end, 1}, | |
041ff4dd | 323 | /* endef */ |
252b5132 RH |
324 | {"equ", s_set, 0}, |
325 | {"equiv", s_set, 1}, | |
9497f5ac | 326 | {"eqv", s_set, -1}, |
252b5132 | 327 | {"err", s_err, 0}, |
d190d046 | 328 | {"error", s_errwarn, 1}, |
252b5132 | 329 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
330 | /* extend */ |
331 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 | 332 | {"appfile", s_app_file, 1}, |
93e914b2 | 333 | {"appline", s_app_line, 1}, |
252b5132 RH |
334 | {"fail", s_fail, 0}, |
335 | {"file", s_app_file, 0}, | |
336 | {"fill", s_fill, 0}, | |
337 | {"float", float_cons, 'f'}, | |
338 | {"format", s_ignore, 0}, | |
339 | {"func", s_func, 0}, | |
340 | {"global", s_globl, 0}, | |
341 | {"globl", s_globl, 0}, | |
342 | {"hword", cons, 2}, | |
343 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 344 | {"ifb", s_ifb, 1}, |
252b5132 RH |
345 | {"ifc", s_ifc, 0}, |
346 | {"ifdef", s_ifdef, 0}, | |
347 | {"ifeq", s_if, (int) O_eq}, | |
348 | {"ifeqs", s_ifeqs, 0}, | |
349 | {"ifge", s_if, (int) O_ge}, | |
350 | {"ifgt", s_if, (int) O_gt}, | |
351 | {"ifle", s_if, (int) O_le}, | |
352 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 353 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
354 | {"ifnc", s_ifc, 1}, |
355 | {"ifndef", s_ifdef, 1}, | |
356 | {"ifne", s_if, (int) O_ne}, | |
357 | {"ifnes", s_ifeqs, 1}, | |
358 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 359 | {"incbin", s_incbin, 0}, |
252b5132 RH |
360 | {"include", s_include, 0}, |
361 | {"int", cons, 4}, | |
362 | {"irp", s_irp, 0}, | |
363 | {"irep", s_irp, 0}, | |
364 | {"irpc", s_irp, 1}, | |
365 | {"irepc", s_irp, 1}, | |
366 | {"lcomm", s_lcomm, 0}, | |
041ff4dd | 367 | {"lflags", listing_flags, 0}, /* Listing flags. */ |
93e914b2 | 368 | {"linefile", s_app_line, 0}, |
252b5132 | 369 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 370 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
371 | {"llen", listing_psize, 1}, |
372 | {"long", cons, 4}, | |
373 | {"lsym", s_lsym, 0}, | |
374 | {"macro", s_macro, 0}, | |
375 | {"mexit", s_mexit, 0}, | |
376 | {"mri", s_mri, 0}, | |
377 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
378 | {"name", s_ignore, 0}, | |
caa32fe5 | 379 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 380 | {"noformat", s_ignore, 0}, |
041ff4dd | 381 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
382 | {"nopage", listing_nopage, 0}, |
383 | {"octa", cons, 16}, | |
384 | {"offset", s_struct, 0}, | |
385 | {"org", s_org, 0}, | |
386 | {"p2align", s_align_ptwo, 0}, | |
387 | {"p2alignw", s_align_ptwo, -2}, | |
388 | {"p2alignl", s_align_ptwo, -4}, | |
389 | {"page", listing_eject, 0}, | |
390 | {"plen", listing_psize, 0}, | |
391 | {"print", s_print, 0}, | |
041ff4dd | 392 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
393 | {"purgem", s_purgem, 0}, |
394 | {"quad", cons, 8}, | |
05e9452c | 395 | {"reloc", s_reloc, 0}, |
252b5132 RH |
396 | {"rep", s_rept, 0}, |
397 | {"rept", s_rept, 0}, | |
398 | {"rva", s_rva, 4}, | |
041ff4dd NC |
399 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
400 | /* scl */ | |
401 | /* sect */ | |
252b5132 RH |
402 | {"set", s_set, 0}, |
403 | {"short", cons, 2}, | |
404 | {"single", float_cons, 'f'}, | |
041ff4dd | 405 | /* size */ |
252b5132 RH |
406 | {"space", s_space, 0}, |
407 | {"skip", s_space, 0}, | |
408 | {"sleb128", s_leb128, 1}, | |
409 | {"spc", s_ignore, 0}, | |
410 | {"stabd", s_stab, 'd'}, | |
411 | {"stabn", s_stab, 'n'}, | |
412 | {"stabs", s_stab, 's'}, | |
413 | {"string", stringer, 1}, | |
414 | {"struct", s_struct, 0}, | |
041ff4dd | 415 | /* tag */ |
252b5132 RH |
416 | {"text", s_text, 0}, |
417 | ||
418 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
419 | won't be able to use it for a while -- probably a year or more. | |
420 | But once this has been released, check with gcc maintainers | |
421 | before deleting it or even changing the spelling. */ | |
422 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
423 | /* If we're folding case -- done for some targets, not necessarily | |
424 | all -- the above string in an input file will be converted to | |
425 | this one. Match it either way... */ | |
426 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
427 | ||
041ff4dd | 428 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 429 | {"ttl", listing_title, 0}, |
041ff4dd | 430 | /* type */ |
252b5132 | 431 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
432 | /* use */ |
433 | /* val */ | |
252b5132 RH |
434 | {"xcom", s_comm, 0}, |
435 | {"xdef", s_globl, 0}, | |
436 | {"xref", s_ignore, 0}, | |
437 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 438 | {"warning", s_errwarn, 0}, |
06e77878 | 439 | {"weakref", s_weakref, 0}, |
252b5132 RH |
440 | {"word", cons, 2}, |
441 | {"zero", s_space, 0}, | |
041ff4dd | 442 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
443 | }; |
444 | ||
87c245cc BE |
445 | static offsetT |
446 | get_absolute_expr (expressionS *exp) | |
447 | { | |
9497f5ac | 448 | expression_and_evaluate (exp); |
87c245cc BE |
449 | if (exp->X_op != O_constant) |
450 | { | |
451 | if (exp->X_op != O_absent) | |
452 | as_bad (_("bad or irreducible absolute expression")); | |
453 | exp->X_add_number = 0; | |
454 | } | |
455 | return exp->X_add_number; | |
456 | } | |
457 | ||
458 | offsetT | |
459 | get_absolute_expression (void) | |
460 | { | |
461 | expressionS exp; | |
462 | ||
463 | return get_absolute_expr (&exp); | |
464 | } | |
465 | ||
252b5132 RH |
466 | static int pop_override_ok = 0; |
467 | static const char *pop_table_name; | |
468 | ||
469 | void | |
39e6acbd | 470 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
471 | { |
472 | const char *errtxt; | |
473 | const pseudo_typeS *pop; | |
474 | for (pop = table; pop->poc_name; pop++) | |
475 | { | |
476 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
477 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
478 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
479 | errtxt); | |
480 | } | |
481 | } | |
482 | ||
483 | #ifndef md_pop_insert | |
484 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
485 | #endif | |
486 | ||
487 | #ifndef obj_pop_insert | |
488 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
489 | #endif | |
490 | ||
54cfded0 AM |
491 | #ifndef cfi_pop_insert |
492 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
493 | #endif | |
494 | ||
041ff4dd | 495 | static void |
39e6acbd | 496 | pobegin (void) |
252b5132 RH |
497 | { |
498 | po_hash = hash_new (); | |
499 | ||
041ff4dd | 500 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
501 | pop_table_name = "md"; |
502 | md_pop_insert (); | |
503 | ||
041ff4dd | 504 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
505 | pop_table_name = "obj"; |
506 | pop_override_ok = 1; | |
507 | obj_pop_insert (); | |
508 | ||
041ff4dd | 509 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
510 | pop_table_name = "standard"; |
511 | pop_insert (potable); | |
d6415f6c | 512 | |
54cfded0 AM |
513 | #ifdef TARGET_USE_CFIPOP |
514 | pop_table_name = "cfi"; | |
515 | pop_override_ok = 1; | |
516 | cfi_pop_insert (); | |
517 | #endif | |
252b5132 RH |
518 | } |
519 | \f | |
520 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
521 | if (ignore_input ()) \ | |
522 | { \ | |
40a4d956 JB |
523 | char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \ |
524 | input_line_pointer = (input_line_pointer <= buffer_limit \ | |
525 | && eol >= buffer_limit) \ | |
526 | ? buffer_limit \ | |
527 | : eol + 1; \ | |
252b5132 RH |
528 | continue; \ |
529 | } | |
530 | ||
252b5132 RH |
531 | /* This function is used when scrubbing the characters between #APP |
532 | and #NO_APP. */ | |
533 | ||
534 | static char *scrub_string; | |
535 | static char *scrub_string_end; | |
536 | ||
537 | static int | |
39e6acbd | 538 | scrub_from_string (char *buf, int buflen) |
252b5132 | 539 | { |
2b47531b ILT |
540 | int copy; |
541 | ||
542 | copy = scrub_string_end - scrub_string; | |
543 | if (copy > buflen) | |
544 | copy = buflen; | |
545 | memcpy (buf, scrub_string, copy); | |
546 | scrub_string += copy; | |
547 | return copy; | |
252b5132 RH |
548 | } |
549 | ||
5e75c3ab JB |
550 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
551 | static int | |
552 | try_macro (char term, const char *line) | |
553 | { | |
554 | sb out; | |
555 | const char *err; | |
556 | macro_entry *macro; | |
557 | ||
558 | if (check_macro (line, &out, &err, ¯o)) | |
559 | { | |
560 | if (err != NULL) | |
561 | as_bad ("%s", err); | |
562 | *input_line_pointer++ = term; | |
563 | input_scrub_include_sb (&out, | |
564 | input_line_pointer, 1); | |
565 | sb_kill (&out); | |
566 | buffer_limit = | |
567 | input_scrub_next_buffer (&input_line_pointer); | |
568 | #ifdef md_macro_info | |
569 | md_macro_info (macro); | |
570 | #endif | |
571 | return 1; | |
572 | } | |
573 | return 0; | |
574 | } | |
575 | ||
041ff4dd NC |
576 | /* We read the file, putting things into a web that represents what we |
577 | have been reading. */ | |
578 | void | |
39e6acbd | 579 | read_a_source_file (char *name) |
252b5132 RH |
580 | { |
581 | register char c; | |
041ff4dd | 582 | register char *s; /* String of symbol, '\0' appended. */ |
252b5132 RH |
583 | register int temp; |
584 | pseudo_typeS *pop; | |
585 | ||
4c400d5e AM |
586 | #ifdef WARN_COMMENTS |
587 | found_comment = 0; | |
588 | #endif | |
589 | ||
252b5132 RH |
590 | buffer = input_scrub_new_file (name); |
591 | ||
592 | listing_file (name); | |
593 | listing_newline (NULL); | |
594 | register_dependency (name); | |
595 | ||
596 | /* Generate debugging information before we've read anything in to denote | |
597 | this file as the "main" source file and not a subordinate one | |
598 | (e.g. N_SO vs N_SOL in stabs). */ | |
599 | generate_file_debug (); | |
600 | ||
601 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 602 | { /* We have another line to parse. */ |
5e75c3ab JB |
603 | #ifndef NO_LISTING |
604 | /* In order to avoid listing macro expansion lines with labels | |
605 | multiple times, keep track of which line was last issued. */ | |
606 | static char *last_eol; | |
607 | ||
608 | last_eol = NULL; | |
609 | #endif | |
252b5132 RH |
610 | while (input_line_pointer < buffer_limit) |
611 | { | |
041ff4dd | 612 | /* We have more of this buffer to parse. */ |
252b5132 | 613 | |
041ff4dd NC |
614 | /* We now have input_line_pointer->1st char of next line. |
615 | If input_line_pointer [-1] == '\n' then we just | |
616 | scanned another line: so bump line counters. */ | |
252b5132 RH |
617 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
618 | { | |
619 | #ifdef md_start_line_hook | |
620 | md_start_line_hook (); | |
621 | #endif | |
252b5132 RH |
622 | if (input_line_pointer[-1] == '\n') |
623 | bump_line_counters (); | |
624 | ||
625 | line_label = NULL; | |
626 | ||
abd63a32 | 627 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
628 | { |
629 | /* Text at the start of a line must be a label, we | |
630 | run down and stick a colon in. */ | |
631 | if (is_name_beginner (*input_line_pointer)) | |
632 | { | |
633 | char *line_start = input_line_pointer; | |
634 | char c; | |
635 | int mri_line_macro; | |
636 | ||
637 | LISTING_NEWLINE (); | |
638 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
639 | ||
640 | c = get_symbol_end (); | |
641 | ||
642 | /* In MRI mode, the EQU and MACRO pseudoops must | |
643 | be handled specially. */ | |
644 | mri_line_macro = 0; | |
645 | if (flag_m68k_mri) | |
646 | { | |
647 | char *rest = input_line_pointer + 1; | |
648 | ||
649 | if (*rest == ':') | |
650 | ++rest; | |
651 | if (*rest == ' ' || *rest == '\t') | |
652 | ++rest; | |
653 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
654 | || strncasecmp (rest, "SET", 3) == 0) | |
655 | && (rest[3] == ' ' || rest[3] == '\t')) | |
656 | { | |
657 | input_line_pointer = rest + 3; | |
658 | equals (line_start, | |
659 | strncasecmp (rest, "SET", 3) == 0); | |
660 | continue; | |
661 | } | |
662 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
663 | && (rest[5] == ' ' | |
664 | || rest[5] == '\t' | |
665 | || is_end_of_line[(unsigned char) rest[5]])) | |
666 | mri_line_macro = 1; | |
667 | } | |
668 | ||
669 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
670 | pseudo-op specially: we don't want to put the |
671 | symbol in the symbol table. */ | |
041ff4dd | 672 | if (!mri_line_macro |
a25c045a | 673 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
674 | && TC_START_LABEL_WITHOUT_COLON(c, |
675 | input_line_pointer) | |
a25c045a | 676 | #endif |
ef99799a | 677 | ) |
252b5132 RH |
678 | line_label = colon (line_start); |
679 | else | |
680 | line_label = symbol_create (line_start, | |
681 | absolute_section, | |
682 | (valueT) 0, | |
683 | &zero_address_frag); | |
684 | ||
685 | *input_line_pointer = c; | |
686 | if (c == ':') | |
687 | input_line_pointer++; | |
688 | } | |
689 | } | |
690 | } | |
691 | ||
47eebc20 | 692 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
693 | We expect a well-formed assembler statement. |
694 | A "symbol-name:" is a statement. | |
f0e652b4 | 695 | |
041ff4dd NC |
696 | Depending on what compiler is used, the order of these tests |
697 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
698 | Each test is independent of all other tests at the (top) |
699 | level. */ | |
700 | do | |
041ff4dd | 701 | c = *input_line_pointer++; |
d2bdaea8 | 702 | while (c == '\t' || c == ' ' || c == '\f'); |
252b5132 RH |
703 | |
704 | #ifndef NO_LISTING | |
705 | /* If listing is on, and we are expanding a macro, then give | |
706 | the listing code the contents of the expanded line. */ | |
707 | if (listing) | |
708 | { | |
709 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
710 | { | |
711 | char *copy; | |
712 | int len; | |
713 | ||
714 | /* Find the end of the current expanded macro line. */ | |
40a4d956 | 715 | s = find_end_of_line (input_line_pointer - 1, flag_m68k_mri); |
252b5132 | 716 | |
5e75c3ab JB |
717 | if (s != last_eol) |
718 | { | |
719 | last_eol = s; | |
720 | /* Copy it for safe keeping. Also give an indication of | |
721 | how much macro nesting is involved at this point. */ | |
722 | len = s - (input_line_pointer - 1); | |
723 | copy = (char *) xmalloc (len + macro_nest + 2); | |
724 | memset (copy, '>', macro_nest); | |
725 | copy[macro_nest] = ' '; | |
726 | memcpy (copy + macro_nest + 1, input_line_pointer - 1, len); | |
727 | copy[macro_nest + 1 + len] = '\0'; | |
728 | ||
729 | /* Install the line with the listing facility. */ | |
730 | listing_newline (copy); | |
731 | } | |
252b5132 RH |
732 | } |
733 | else | |
734 | listing_newline (NULL); | |
735 | } | |
736 | #endif | |
041ff4dd NC |
737 | /* C is the 1st significant character. |
738 | Input_line_pointer points after that character. */ | |
252b5132 RH |
739 | if (is_name_beginner (c)) |
740 | { | |
041ff4dd | 741 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
742 | HANDLE_CONDITIONAL_ASSEMBLY (); |
743 | ||
744 | s = --input_line_pointer; | |
041ff4dd NC |
745 | c = get_symbol_end (); /* name's delimiter. */ |
746 | ||
747 | /* C is character after symbol. | |
d6415f6c AM |
748 | That character's place in the input line is now '\0'. |
749 | S points to the beginning of the symbol. | |
750 | [In case of pseudo-op, s->'.'.] | |
751 | Input_line_pointer->'\0' where c was. */ | |
041ff4dd | 752 | if (TC_START_LABEL (c, input_line_pointer)) |
252b5132 RH |
753 | { |
754 | if (flag_m68k_mri) | |
755 | { | |
756 | char *rest = input_line_pointer + 1; | |
757 | ||
758 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
759 | if (*rest == ':') |
760 | ++rest; | |
f0e652b4 | 761 | |
252b5132 RH |
762 | if (*rest == ' ' || *rest == '\t') |
763 | ++rest; | |
f0e652b4 | 764 | |
252b5132 RH |
765 | if ((strncasecmp (rest, "EQU", 3) == 0 |
766 | || strncasecmp (rest, "SET", 3) == 0) | |
767 | && (rest[3] == ' ' || rest[3] == '\t')) | |
768 | { | |
769 | input_line_pointer = rest + 3; | |
770 | equals (s, 1); | |
771 | continue; | |
772 | } | |
773 | } | |
774 | ||
041ff4dd NC |
775 | line_label = colon (s); /* User-defined label. */ |
776 | /* Put ':' back for error messages' sake. */ | |
777 | *input_line_pointer++ = ':'; | |
a645d1eb L |
778 | #ifdef tc_check_label |
779 | tc_check_label (line_label); | |
780 | #endif | |
041ff4dd | 781 | /* Input_line_pointer->after ':'. */ |
252b5132 | 782 | SKIP_WHITESPACE (); |
252b5132 | 783 | } |
9497f5ac NC |
784 | else if (input_line_pointer[1] == '=' |
785 | && (c == '=' | |
786 | || ((c == ' ' || c == '\t') | |
787 | && input_line_pointer[2] == '='))) | |
788 | { | |
789 | equals (s, -1); | |
790 | demand_empty_rest_of_line (); | |
791 | } | |
ee3c9814 CM |
792 | else if ((c == '=' |
793 | || ((c == ' ' || c == '\t') | |
794 | && input_line_pointer[1] == '=')) | |
795 | #ifdef TC_EQUAL_IN_INSN | |
796 | && !TC_EQUAL_IN_INSN (c, s) | |
797 | #endif | |
798 | ) | |
252b5132 RH |
799 | { |
800 | equals (s, 1); | |
801 | demand_empty_rest_of_line (); | |
802 | } | |
803 | else | |
041ff4dd NC |
804 | { |
805 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
806 | pop = NULL; |
807 | ||
a8a3b3b2 | 808 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
809 | { |
810 | char *s2 = s; | |
37d8bb27 NC |
811 | |
812 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
813 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 814 | |
252b5132 RH |
815 | while (*s2) |
816 | { | |
3882b010 | 817 | *s2 = TOLOWER (*s2); |
252b5132 RH |
818 | s2++; |
819 | } | |
820 | } | |
821 | #endif | |
abd63a32 | 822 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 823 | { |
7be1c489 AM |
824 | /* The MRI assembler uses pseudo-ops without |
825 | a period. */ | |
252b5132 RH |
826 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
827 | if (pop != NULL && pop->poc_handler == NULL) | |
828 | pop = NULL; | |
829 | } | |
830 | ||
831 | if (pop != NULL | |
041ff4dd | 832 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 833 | { |
041ff4dd | 834 | /* PSEUDO - OP. |
f0e652b4 | 835 | |
d6415f6c AM |
836 | WARNING: c has next char, which may be end-of-line. |
837 | We lookup the pseudo-op table with s+1 because we | |
838 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
839 | |
840 | if (pop == NULL) | |
841 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
842 | if (pop && !pop->poc_handler) |
843 | pop = NULL; | |
252b5132 RH |
844 | |
845 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
846 | automatic alignment directive. What a hack |
847 | this is. */ | |
252b5132 RH |
848 | if (mri_pending_align |
849 | && (pop == NULL | |
041ff4dd NC |
850 | || !((pop->poc_handler == cons |
851 | && pop->poc_val == 1) | |
852 | || (pop->poc_handler == s_space | |
853 | && pop->poc_val == 1) | |
252b5132 | 854 | #ifdef tc_conditional_pseudoop |
041ff4dd | 855 | || tc_conditional_pseudoop (pop) |
252b5132 | 856 | #endif |
041ff4dd NC |
857 | || pop->poc_handler == s_if |
858 | || pop->poc_handler == s_ifdef | |
859 | || pop->poc_handler == s_ifc | |
860 | || pop->poc_handler == s_ifeqs | |
861 | || pop->poc_handler == s_else | |
862 | || pop->poc_handler == s_endif | |
863 | || pop->poc_handler == s_globl | |
864 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
865 | { |
866 | do_align (1, (char *) NULL, 0, 0); | |
867 | mri_pending_align = 0; | |
f0e652b4 | 868 | |
252b5132 RH |
869 | if (line_label != NULL) |
870 | { | |
2b47531b | 871 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
872 | S_SET_VALUE (line_label, frag_now_fix ()); |
873 | } | |
874 | } | |
875 | ||
041ff4dd | 876 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
877 | if (pop == NULL) |
878 | { | |
5e75c3ab JB |
879 | char *end = input_line_pointer; |
880 | ||
252b5132 RH |
881 | *input_line_pointer = c; |
882 | s_ignore (0); | |
5e75c3ab JB |
883 | c = *--input_line_pointer; |
884 | *input_line_pointer = '\0'; | |
885 | if (! macro_defined || ! try_macro (c, s)) | |
886 | { | |
887 | *end = '\0'; | |
888 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
889 | *input_line_pointer++ = c; | |
890 | } | |
252b5132 RH |
891 | continue; |
892 | } | |
893 | ||
041ff4dd | 894 | /* Put it back for error messages etc. */ |
252b5132 RH |
895 | *input_line_pointer = c; |
896 | /* The following skip of whitespace is compulsory. | |
897 | A well shaped space is sometimes all that separates | |
041ff4dd | 898 | keyword from operands. */ |
252b5132 RH |
899 | if (c == ' ' || c == '\t') |
900 | input_line_pointer++; | |
041ff4dd NC |
901 | |
902 | /* Input_line is restored. | |
d6415f6c AM |
903 | Input_line_pointer->1st non-blank char |
904 | after pseudo-operation. */ | |
252b5132 RH |
905 | (*pop->poc_handler) (pop->poc_val); |
906 | ||
907 | /* If that was .end, just get out now. */ | |
908 | if (pop->poc_handler == s_end) | |
909 | goto quit; | |
910 | } | |
911 | else | |
912 | { | |
041ff4dd NC |
913 | /* WARNING: c has char, which may be end-of-line. */ |
914 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 | 915 | *input_line_pointer = c; |
40a4d956 | 916 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1); |
252b5132 RH |
917 | c = *input_line_pointer; |
918 | *input_line_pointer = '\0'; | |
919 | ||
920 | generate_lineno_debug (); | |
921 | ||
5e75c3ab JB |
922 | if (macro_defined && try_macro (c, s)) |
923 | continue; | |
252b5132 RH |
924 | |
925 | if (mri_pending_align) | |
926 | { | |
927 | do_align (1, (char *) NULL, 0, 0); | |
928 | mri_pending_align = 0; | |
929 | if (line_label != NULL) | |
930 | { | |
2b47531b | 931 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
932 | S_SET_VALUE (line_label, frag_now_fix ()); |
933 | } | |
934 | } | |
935 | ||
041ff4dd | 936 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
937 | |
938 | *input_line_pointer++ = c; | |
939 | ||
940 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
941 | this instruction. */ |
942 | } | |
943 | } | |
252b5132 | 944 | continue; |
041ff4dd | 945 | } |
252b5132 RH |
946 | |
947 | /* Empty statement? */ | |
948 | if (is_end_of_line[(unsigned char) c]) | |
949 | continue; | |
950 | ||
3882b010 | 951 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 952 | { |
041ff4dd | 953 | /* local label ("4:") */ |
252b5132 RH |
954 | char *backup = input_line_pointer; |
955 | ||
956 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
957 | ||
958 | temp = c - '0'; | |
959 | ||
041ff4dd | 960 | /* Read the whole number. */ |
3882b010 | 961 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
962 | { |
963 | temp = (temp * 10) + *input_line_pointer - '0'; | |
964 | ++input_line_pointer; | |
041ff4dd | 965 | } |
252b5132 RH |
966 | |
967 | if (LOCAL_LABELS_DOLLAR | |
968 | && *input_line_pointer == '$' | |
969 | && *(input_line_pointer + 1) == ':') | |
970 | { | |
971 | input_line_pointer += 2; | |
972 | ||
973 | if (dollar_label_defined (temp)) | |
974 | { | |
975 | as_fatal (_("label \"%d$\" redefined"), temp); | |
976 | } | |
977 | ||
978 | define_dollar_label (temp); | |
979 | colon (dollar_label_name (temp, 0)); | |
980 | continue; | |
981 | } | |
982 | ||
983 | if (LOCAL_LABELS_FB | |
984 | && *input_line_pointer++ == ':') | |
985 | { | |
986 | fb_label_instance_inc (temp); | |
987 | colon (fb_label_name (temp, 0)); | |
988 | continue; | |
989 | } | |
990 | ||
991 | input_line_pointer = backup; | |
992 | } /* local label ("4:") */ | |
993 | ||
994 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 995 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 996 | sb sbuf; |
252b5132 RH |
997 | char *ends; |
998 | char *new_buf; | |
999 | char *new_tmp; | |
1000 | unsigned int new_length; | |
1001 | char *tmp_buf = 0; | |
1002 | ||
252b5132 RH |
1003 | s = input_line_pointer; |
1004 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1005 | { |
1006 | /* We ignore it. */ | |
1007 | ignore_rest_of_line (); | |
1008 | continue; | |
1009 | } | |
1010 | bump_line_counters (); | |
252b5132 RH |
1011 | s += 4; |
1012 | ||
64e55042 | 1013 | sb_new (&sbuf); |
252b5132 RH |
1014 | ends = strstr (s, "#NO_APP\n"); |
1015 | ||
1016 | if (!ends) | |
1017 | { | |
1018 | unsigned int tmp_len; | |
1019 | unsigned int num; | |
1020 | ||
1021 | /* The end of the #APP wasn't in this buffer. We | |
1022 | keep reading in buffers until we find the #NO_APP | |
1023 | that goes with this #APP There is one. The specs | |
47eebc20 | 1024 | guarantee it... */ |
252b5132 RH |
1025 | tmp_len = buffer_limit - s; |
1026 | tmp_buf = xmalloc (tmp_len + 1); | |
1027 | memcpy (tmp_buf, s, tmp_len); | |
1028 | do | |
1029 | { | |
1030 | new_tmp = input_scrub_next_buffer (&buffer); | |
1031 | if (!new_tmp) | |
1032 | break; | |
1033 | else | |
1034 | buffer_limit = new_tmp; | |
1035 | input_line_pointer = buffer; | |
1036 | ends = strstr (buffer, "#NO_APP\n"); | |
1037 | if (ends) | |
1038 | num = ends - buffer; | |
1039 | else | |
1040 | num = buffer_limit - buffer; | |
1041 | ||
1042 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
1043 | memcpy (tmp_buf + tmp_len, buffer, num); | |
1044 | tmp_len += num; | |
1045 | } | |
1046 | while (!ends); | |
1047 | ||
1048 | input_line_pointer = ends ? ends + 8 : NULL; | |
1049 | ||
1050 | s = tmp_buf; | |
1051 | ends = s + tmp_len; | |
1052 | ||
1053 | } | |
1054 | else | |
1055 | { | |
1056 | input_line_pointer = ends + 8; | |
1057 | } | |
1058 | ||
1059 | scrub_string = s; | |
1060 | scrub_string_end = ends; | |
1061 | ||
1062 | new_length = ends - s; | |
1063 | new_buf = (char *) xmalloc (new_length); | |
1064 | new_tmp = new_buf; | |
1065 | for (;;) | |
1066 | { | |
1067 | int space; | |
1068 | int size; | |
1069 | ||
1070 | space = (new_buf + new_length) - new_tmp; | |
1071 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1072 | ||
1073 | if (size < space) | |
1074 | { | |
64e55042 | 1075 | new_tmp[size] = 0; |
252b5132 RH |
1076 | break; |
1077 | } | |
1078 | ||
1079 | new_buf = xrealloc (new_buf, new_length + 100); | |
1080 | new_tmp = new_buf + new_length; | |
1081 | new_length += 100; | |
1082 | } | |
1083 | ||
1084 | if (tmp_buf) | |
1085 | free (tmp_buf); | |
f0e652b4 | 1086 | |
64e55042 HPN |
1087 | /* We've "scrubbed" input to the preferred format. In the |
1088 | process we may have consumed the whole of the remaining | |
1089 | file (and included files). We handle this formatted | |
1090 | input similar to that of macro expansion, letting | |
1091 | actual macro expansion (possibly nested) and other | |
1092 | input expansion work. Beware that in messages, line | |
1093 | numbers and possibly file names will be incorrect. */ | |
1094 | sb_add_string (&sbuf, new_buf); | |
1095 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); | |
1096 | sb_kill (&sbuf); | |
1097 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1098 | free (new_buf); | |
252b5132 RH |
1099 | continue; |
1100 | } | |
1101 | ||
1102 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1103 | ||
1104 | #ifdef tc_unrecognized_line | |
1105 | if (tc_unrecognized_line (c)) | |
1106 | continue; | |
1107 | #endif | |
0e389e77 | 1108 | input_line_pointer--; |
601e61cd | 1109 | /* Report unknown char as error. */ |
c95b35a9 | 1110 | demand_empty_rest_of_line (); |
041ff4dd | 1111 | } |
252b5132 RH |
1112 | |
1113 | #ifdef md_after_pass_hook | |
1114 | md_after_pass_hook (); | |
1115 | #endif | |
041ff4dd | 1116 | } |
252b5132 RH |
1117 | |
1118 | quit: | |
1119 | ||
1120 | #ifdef md_cleanup | |
041ff4dd | 1121 | md_cleanup (); |
252b5132 | 1122 | #endif |
041ff4dd NC |
1123 | /* Close the input file. */ |
1124 | input_scrub_close (); | |
4c400d5e AM |
1125 | #ifdef WARN_COMMENTS |
1126 | { | |
1127 | if (warn_comment && found_comment) | |
1128 | as_warn_where (found_comment_file, found_comment, | |
1129 | "first comment found here"); | |
1130 | } | |
1131 | #endif | |
252b5132 RH |
1132 | } |
1133 | ||
e5604d79 RS |
1134 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
1135 | Take the sign of the number from X_unsigned rather than X_add_number. */ | |
1136 | ||
1137 | static void | |
1138 | convert_to_bignum (expressionS *exp) | |
1139 | { | |
1140 | valueT value; | |
1141 | unsigned int i; | |
1142 | ||
1143 | value = exp->X_add_number; | |
1144 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1145 | { | |
1146 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1147 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1148 | } | |
1149 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1150 | the sign of the original value. */ | |
1151 | if ((exp->X_add_number < 0) != !exp->X_unsigned) | |
1152 | generic_bignum[i++] = exp->X_unsigned ? 0 : LITTLENUM_MASK; | |
1153 | exp->X_op = O_big; | |
1154 | exp->X_add_number = i; | |
1155 | } | |
1156 | ||
252b5132 RH |
1157 | /* For most MRI pseudo-ops, the line actually ends at the first |
1158 | nonquoted space. This function looks for that point, stuffs a null | |
1159 | in, and sets *STOPCP to the character that used to be there, and | |
1160 | returns the location. | |
1161 | ||
1162 | Until I hear otherwise, I am going to assume that this is only true | |
1163 | for the m68k MRI assembler. */ | |
1164 | ||
1165 | char * | |
39e6acbd | 1166 | mri_comment_field (char *stopcp) |
252b5132 | 1167 | { |
252b5132 | 1168 | char *s; |
041ff4dd | 1169 | #ifdef TC_M68K |
252b5132 RH |
1170 | int inquote = 0; |
1171 | ||
1172 | know (flag_m68k_mri); | |
1173 | ||
1174 | for (s = input_line_pointer; | |
041ff4dd | 1175 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1176 | || inquote); |
1177 | s++) | |
1178 | { | |
1179 | if (*s == '\'') | |
041ff4dd | 1180 | inquote = !inquote; |
252b5132 | 1181 | } |
252b5132 | 1182 | #else |
041ff4dd NC |
1183 | for (s = input_line_pointer; |
1184 | !is_end_of_line[(unsigned char) *s]; | |
1185 | s++) | |
252b5132 | 1186 | ; |
041ff4dd | 1187 | #endif |
252b5132 RH |
1188 | *stopcp = *s; |
1189 | *s = '\0'; | |
f0e652b4 | 1190 | |
252b5132 | 1191 | return s; |
252b5132 RH |
1192 | } |
1193 | ||
1194 | /* Skip to the end of an MRI comment field. */ | |
1195 | ||
1196 | void | |
39e6acbd | 1197 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1198 | { |
1199 | know (flag_mri); | |
1200 | ||
1201 | input_line_pointer = stop; | |
1202 | *stop = stopc; | |
041ff4dd | 1203 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1204 | ++input_line_pointer; |
1205 | } | |
1206 | ||
041ff4dd | 1207 | void |
39e6acbd | 1208 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1209 | { |
1210 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1211 | } | |
1212 | ||
1213 | /* Guts of .align directive. N is the power of two to which to align. | |
1214 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1215 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1216 | the maximum number of characters to skip when doing the alignment, | |
1217 | or 0 if there is no maximum. */ | |
1218 | ||
041ff4dd | 1219 | static void |
39e6acbd | 1220 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1221 | { |
ebeb9253 AM |
1222 | if (now_seg == absolute_section) |
1223 | { | |
1224 | if (fill != NULL) | |
1225 | while (len-- > 0) | |
1226 | if (*fill++ != '\0') | |
1227 | { | |
1228 | as_warn (_("ignoring fill value in absolute section")); | |
1229 | break; | |
1230 | } | |
1231 | fill = NULL; | |
1232 | len = 0; | |
1233 | } | |
1234 | ||
b8861cfb NS |
1235 | #ifdef md_flush_pending_output |
1236 | md_flush_pending_output (); | |
1237 | #endif | |
252b5132 RH |
1238 | #ifdef md_do_align |
1239 | md_do_align (n, fill, len, max, just_record_alignment); | |
1240 | #endif | |
1241 | ||
041ff4dd | 1242 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1243 | if (n != 0 && !need_pass_2) |
1244 | { | |
0a9ef439 RH |
1245 | if (fill == NULL) |
1246 | { | |
1247 | if (subseg_text_p (now_seg)) | |
1248 | frag_align_code (n, max); | |
1249 | else | |
1250 | frag_align (n, 0, max); | |
1251 | } | |
1252 | else if (len <= 1) | |
252b5132 RH |
1253 | frag_align (n, *fill, max); |
1254 | else | |
1255 | frag_align_pattern (n, fill, len, max); | |
1256 | } | |
1257 | ||
1258 | #ifdef md_do_align | |
a6bd2a4f | 1259 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1260 | #endif |
1261 | ||
bea9907b | 1262 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1263 | } |
1264 | ||
1265 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1266 | (in bytes). A negative ARG is the negative of the length of the | |
1267 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1268 | interpreted as the byte boundary, rather than the power of 2. */ | |
1269 | ||
9ebd302d | 1270 | #define ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) |
9ebd302d | 1271 | |
252b5132 | 1272 | static void |
39e6acbd | 1273 | s_align (int arg, int bytes_p) |
252b5132 | 1274 | { |
b617dc20 | 1275 | unsigned int align_limit = ALIGN_LIMIT; |
9ebd302d | 1276 | unsigned int align; |
252b5132 | 1277 | char *stop = NULL; |
fb25138b | 1278 | char stopc = 0; |
252b5132 RH |
1279 | offsetT fill = 0; |
1280 | int max; | |
1281 | int fill_p; | |
1282 | ||
1283 | if (flag_mri) | |
1284 | stop = mri_comment_field (&stopc); | |
1285 | ||
1286 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1287 | { | |
1288 | if (arg < 0) | |
1289 | align = 0; | |
1290 | else | |
041ff4dd | 1291 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1292 | } |
1293 | else | |
1294 | { | |
1295 | align = get_absolute_expression (); | |
1296 | SKIP_WHITESPACE (); | |
1297 | } | |
1298 | ||
1299 | if (bytes_p) | |
1300 | { | |
1301 | /* Convert to a power of 2. */ | |
1302 | if (align != 0) | |
1303 | { | |
1304 | unsigned int i; | |
1305 | ||
1306 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1307 | ; | |
1308 | if (align != 1) | |
0e389e77 | 1309 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1310 | |
252b5132 RH |
1311 | align = i; |
1312 | } | |
1313 | } | |
1314 | ||
b617dc20 | 1315 | if (align > align_limit) |
252b5132 | 1316 | { |
b617dc20 | 1317 | align = align_limit; |
0e389e77 | 1318 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1319 | } |
1320 | ||
1321 | if (*input_line_pointer != ',') | |
1322 | { | |
1323 | fill_p = 0; | |
1324 | max = 0; | |
1325 | } | |
1326 | else | |
1327 | { | |
1328 | ++input_line_pointer; | |
1329 | if (*input_line_pointer == ',') | |
1330 | fill_p = 0; | |
1331 | else | |
1332 | { | |
1333 | fill = get_absolute_expression (); | |
1334 | SKIP_WHITESPACE (); | |
1335 | fill_p = 1; | |
1336 | } | |
1337 | ||
1338 | if (*input_line_pointer != ',') | |
1339 | max = 0; | |
1340 | else | |
1341 | { | |
1342 | ++input_line_pointer; | |
1343 | max = get_absolute_expression (); | |
1344 | } | |
1345 | } | |
1346 | ||
041ff4dd | 1347 | if (!fill_p) |
252b5132 RH |
1348 | { |
1349 | if (arg < 0) | |
1350 | as_warn (_("expected fill pattern missing")); | |
1351 | do_align (align, (char *) NULL, 0, max); | |
1352 | } | |
1353 | else | |
1354 | { | |
1355 | int fill_len; | |
1356 | ||
1357 | if (arg >= 0) | |
1358 | fill_len = 1; | |
1359 | else | |
041ff4dd | 1360 | fill_len = -arg; |
252b5132 RH |
1361 | if (fill_len <= 1) |
1362 | { | |
1363 | char fill_char; | |
1364 | ||
1365 | fill_char = fill; | |
1366 | do_align (align, &fill_char, fill_len, max); | |
1367 | } | |
1368 | else | |
1369 | { | |
1370 | char ab[16]; | |
1371 | ||
1372 | if ((size_t) fill_len > sizeof ab) | |
1373 | abort (); | |
1374 | md_number_to_chars (ab, fill, fill_len); | |
1375 | do_align (align, ab, fill_len, max); | |
1376 | } | |
1377 | } | |
1378 | ||
1379 | demand_empty_rest_of_line (); | |
1380 | ||
1381 | if (flag_mri) | |
1382 | mri_comment_end (stop, stopc); | |
1383 | } | |
1384 | ||
1385 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1386 | align to a 4 byte boundary. */ | |
1387 | ||
041ff4dd | 1388 | void |
39e6acbd | 1389 | s_align_bytes (int arg) |
252b5132 RH |
1390 | { |
1391 | s_align (arg, 1); | |
1392 | } | |
1393 | ||
1394 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1395 | to a 2**4 boundary. */ | |
1396 | ||
041ff4dd | 1397 | void |
39e6acbd | 1398 | s_align_ptwo (int arg) |
252b5132 RH |
1399 | { |
1400 | s_align (arg, 0); | |
1401 | } | |
1402 | ||
caa32fe5 NC |
1403 | /* Switch in and out of alternate macro mode. */ |
1404 | ||
1405 | void | |
1406 | s_altmacro (int on) | |
1407 | { | |
1408 | demand_empty_rest_of_line (); | |
1409 | macro_set_alternate (on); | |
1410 | } | |
1411 | ||
e13bab5a AM |
1412 | symbolS * |
1413 | s_comm_internal (int param, | |
1414 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1415 | { |
e13bab5a AM |
1416 | char *name; |
1417 | char c; | |
1418 | char *p; | |
1419 | offsetT temp, size; | |
1420 | symbolS *symbolP = NULL; | |
252b5132 | 1421 | char *stop = NULL; |
fb25138b | 1422 | char stopc = 0; |
e13bab5a | 1423 | expressionS exp; |
252b5132 RH |
1424 | |
1425 | if (flag_mri) | |
1426 | stop = mri_comment_field (&stopc); | |
1427 | ||
1428 | name = input_line_pointer; | |
1429 | c = get_symbol_end (); | |
041ff4dd | 1430 | /* Just after name is now '\0'. */ |
252b5132 RH |
1431 | p = input_line_pointer; |
1432 | *p = c; | |
0e389e77 AM |
1433 | |
1434 | if (name == p) | |
1435 | { | |
1436 | as_bad (_("expected symbol name")); | |
40a4d956 | 1437 | ignore_rest_of_line (); |
e13bab5a | 1438 | goto out; |
0e389e77 AM |
1439 | } |
1440 | ||
252b5132 | 1441 | SKIP_WHITESPACE (); |
f0e652b4 | 1442 | |
e13bab5a AM |
1443 | /* Accept an optional comma after the name. The comma used to be |
1444 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1445 | if (*input_line_pointer == ',') | |
1446 | input_line_pointer++; | |
1447 | ||
e13bab5a AM |
1448 | temp = get_absolute_expr (&exp); |
1449 | size = temp; | |
e13bab5a | 1450 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1451 | if (exp.X_op == O_absent) |
252b5132 | 1452 | { |
e13bab5a | 1453 | as_bad (_("missing size expression")); |
252b5132 | 1454 | ignore_rest_of_line (); |
e13bab5a | 1455 | goto out; |
252b5132 | 1456 | } |
e13bab5a | 1457 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1458 | { |
e13bab5a | 1459 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1460 | ignore_rest_of_line (); |
e13bab5a | 1461 | goto out; |
252b5132 | 1462 | } |
f0e652b4 | 1463 | |
a207757e | 1464 | *p = 0; |
252b5132 | 1465 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1466 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1467 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1468 | { |
92757bc9 JB |
1469 | if (!S_IS_VOLATILE (symbolP)) |
1470 | { | |
1471 | symbolP = NULL; | |
1472 | as_bad (_("symbol `%s' is already defined"), name); | |
1473 | *p = c; | |
1474 | ignore_rest_of_line (); | |
1475 | goto out; | |
1476 | } | |
89cdfe57 | 1477 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1478 | S_SET_SEGMENT (symbolP, undefined_section); |
1479 | S_SET_VALUE (symbolP, 0); | |
1480 | symbol_set_frag (symbolP, &zero_address_frag); | |
1481 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1482 | } |
f0e652b4 | 1483 | |
e13bab5a AM |
1484 | size = S_GET_VALUE (symbolP); |
1485 | if (size == 0) | |
1486 | size = temp; | |
1487 | else if (size != temp) | |
1488 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1489 | name, (long) size, (long) temp); | |
1490 | ||
1491 | *p = c; | |
1492 | if (comm_parse_extra != NULL) | |
1493 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1494 | else |
1495 | { | |
e13bab5a | 1496 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1497 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1498 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
252b5132 | 1499 | #ifdef OBJ_VMS |
e13bab5a AM |
1500 | { |
1501 | extern int flag_one; | |
1502 | if (size == 0 || !flag_one) | |
1503 | S_GET_OTHER (symbolP) = const_flag; | |
1504 | } | |
1505 | #endif | |
1506 | } | |
252b5132 RH |
1507 | |
1508 | demand_empty_rest_of_line (); | |
e13bab5a | 1509 | out: |
252b5132 RH |
1510 | if (flag_mri) |
1511 | mri_comment_end (stop, stopc); | |
e13bab5a AM |
1512 | return symbolP; |
1513 | } | |
1514 | ||
1515 | void | |
1516 | s_comm (int ignore) | |
1517 | { | |
1518 | s_comm_internal (ignore, NULL); | |
1519 | } | |
252b5132 RH |
1520 | |
1521 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1522 | symbol with the appropriate name. We make s_space do the right | |
1523 | thing by increasing the size. */ | |
1524 | ||
1525 | void | |
39e6acbd | 1526 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1527 | { |
1528 | char *name; | |
1529 | char c; | |
1530 | char *alc = NULL; | |
1531 | symbolS *sym; | |
1532 | offsetT align; | |
1533 | char *stop = NULL; | |
fb25138b | 1534 | char stopc = 0; |
252b5132 | 1535 | |
041ff4dd | 1536 | if (!flag_mri) |
252b5132 RH |
1537 | { |
1538 | s_comm (0); | |
1539 | return; | |
1540 | } | |
1541 | ||
1542 | stop = mri_comment_field (&stopc); | |
1543 | ||
1544 | SKIP_WHITESPACE (); | |
1545 | ||
1546 | name = input_line_pointer; | |
3882b010 | 1547 | if (!ISDIGIT (*name)) |
252b5132 RH |
1548 | c = get_symbol_end (); |
1549 | else | |
1550 | { | |
1551 | do | |
1552 | { | |
1553 | ++input_line_pointer; | |
1554 | } | |
3882b010 | 1555 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1556 | |
252b5132 RH |
1557 | c = *input_line_pointer; |
1558 | *input_line_pointer = '\0'; | |
1559 | ||
1560 | if (line_label != NULL) | |
1561 | { | |
1562 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1563 | + (input_line_pointer - name) | |
1564 | + 1); | |
1565 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1566 | name = alc; | |
1567 | } | |
1568 | } | |
1569 | ||
1570 | sym = symbol_find_or_make (name); | |
1571 | *input_line_pointer = c; | |
1572 | if (alc != NULL) | |
1573 | free (alc); | |
1574 | ||
1575 | if (*input_line_pointer != ',') | |
1576 | align = 0; | |
1577 | else | |
1578 | { | |
1579 | ++input_line_pointer; | |
1580 | align = get_absolute_expression (); | |
1581 | } | |
1582 | ||
041ff4dd | 1583 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1584 | { |
0e389e77 | 1585 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1586 | ignore_rest_of_line (); |
1587 | mri_comment_end (stop, stopc); | |
1588 | return; | |
1589 | } | |
1590 | ||
1591 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1592 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1593 | mri_common_symbol = sym; |
1594 | ||
1595 | #ifdef S_SET_ALIGN | |
1596 | if (align != 0) | |
1597 | S_SET_ALIGN (sym, align); | |
1598 | #endif | |
1599 | ||
1600 | if (line_label != NULL) | |
1601 | { | |
2b47531b ILT |
1602 | expressionS exp; |
1603 | exp.X_op = O_symbol; | |
1604 | exp.X_add_symbol = sym; | |
1605 | exp.X_add_number = 0; | |
1606 | symbol_set_value_expression (line_label, &exp); | |
1607 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1608 | S_SET_SEGMENT (line_label, expr_section); |
1609 | } | |
1610 | ||
1611 | /* FIXME: We just ignore the small argument, which distinguishes | |
1612 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1613 | ||
1614 | /* Ignore the type and hptype. */ | |
1615 | if (*input_line_pointer == ',') | |
1616 | input_line_pointer += 2; | |
1617 | if (*input_line_pointer == ',') | |
1618 | input_line_pointer += 2; | |
1619 | ||
1620 | demand_empty_rest_of_line (); | |
1621 | ||
1622 | mri_comment_end (stop, stopc); | |
1623 | } | |
1624 | ||
1625 | void | |
39e6acbd | 1626 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1627 | { |
1628 | segT section; | |
1629 | register int temp; | |
1630 | ||
1631 | temp = get_absolute_expression (); | |
1632 | if (flag_readonly_data_in_text) | |
1633 | { | |
1634 | section = text_section; | |
1635 | temp += 1000; | |
1636 | } | |
1637 | else | |
1638 | section = data_section; | |
1639 | ||
1640 | subseg_set (section, (subsegT) temp); | |
1641 | ||
1642 | #ifdef OBJ_VMS | |
1643 | const_flag = 0; | |
1644 | #endif | |
1645 | demand_empty_rest_of_line (); | |
1646 | } | |
1647 | ||
1648 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1649 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1650 | file name. This default definition may be overridden by the object | |
1651 | or CPU specific pseudo-ops. This function is also the default | |
1652 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1653 | .file. */ | |
1654 | ||
ecb4347a | 1655 | void |
f17c130b | 1656 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1657 | { |
1658 | #ifdef LISTING | |
1659 | if (listing) | |
1660 | listing_source_file (file); | |
1661 | #endif | |
1662 | register_dependency (file); | |
1663 | #ifdef obj_app_file | |
c04f5787 | 1664 | obj_app_file (file, appfile); |
ecb4347a DJ |
1665 | #endif |
1666 | } | |
1667 | ||
041ff4dd | 1668 | void |
39e6acbd | 1669 | s_app_file (int appfile) |
252b5132 RH |
1670 | { |
1671 | register char *s; | |
1672 | int length; | |
1673 | ||
041ff4dd | 1674 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1675 | if ((s = demand_copy_string (&length)) != 0) |
1676 | { | |
252b5132 | 1677 | int may_omit |
93e914b2 | 1678 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
1679 | |
1680 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1681 | backquote. */ |
252b5132 RH |
1682 | if (flag_m68k_mri |
1683 | && *input_line_pointer == '\'' | |
1684 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1685 | ++input_line_pointer; | |
1686 | ||
1687 | demand_empty_rest_of_line (); | |
041ff4dd | 1688 | if (!may_omit) |
c04f5787 | 1689 | s_app_file_string (s, appfile); |
252b5132 RH |
1690 | } |
1691 | } | |
1692 | ||
e9fc6c21 AO |
1693 | static int |
1694 | get_linefile_number (int *flag) | |
1695 | { | |
1696 | SKIP_WHITESPACE (); | |
1697 | ||
1698 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
1699 | return 0; | |
1700 | ||
1701 | *flag = get_absolute_expression (); | |
1702 | ||
1703 | return 1; | |
1704 | } | |
1705 | ||
252b5132 RH |
1706 | /* Handle the .appline pseudo-op. This is automatically generated by |
1707 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1708 | default definition may be overridden by the object or CPU specific | |
1709 | pseudo-ops. */ | |
1710 | ||
1711 | void | |
93e914b2 | 1712 | s_app_line (int appline) |
252b5132 | 1713 | { |
e9fc6c21 | 1714 | char *file = NULL; |
252b5132 RH |
1715 | int l; |
1716 | ||
1717 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
1718 | if (appline) |
1719 | l = get_absolute_expression (); | |
1720 | else if (!get_linefile_number (&l)) | |
1721 | { | |
1722 | ignore_rest_of_line (); | |
1723 | return; | |
1724 | } | |
1725 | ||
1726 | l--; | |
47837f8e NC |
1727 | |
1728 | if (l < -1) | |
252b5132 | 1729 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
1730 | Besides, it's silly. GCC however will generate a line number of |
1731 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
1732 | ||
1733 | # 0 "<built-in>" | |
1734 | ||
1735 | We do not want to barf on this, especially since such files are used | |
1736 | in the GCC and GDB testsuites. So we check for negative line numbers | |
1737 | rather than non-positive line numbers. */ | |
0e389e77 | 1738 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1739 | l + 1); |
252b5132 RH |
1740 | else |
1741 | { | |
93e914b2 | 1742 | int flags = 0; |
93e914b2 AO |
1743 | int length = 0; |
1744 | ||
1745 | if (!appline) | |
1746 | { | |
e9fc6c21 AO |
1747 | SKIP_WHITESPACE (); |
1748 | ||
1749 | if (*input_line_pointer == '"') | |
1750 | file = demand_copy_string (&length); | |
93e914b2 AO |
1751 | |
1752 | if (file) | |
1753 | { | |
1754 | int this_flag; | |
1755 | ||
e9fc6c21 | 1756 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
1757 | switch (this_flag) |
1758 | { | |
1759 | /* From GCC's cpp documentation: | |
1760 | 1: start of a new file. | |
1761 | 2: returning to a file after having included | |
1762 | another file. | |
1763 | 3: following text comes from a system header file. | |
1764 | 4: following text should be treated as extern "C". | |
1765 | ||
1766 | 4 is nonsensical for the assembler; 3, we don't | |
1767 | care about, so we ignore it just in case a | |
1768 | system header file is included while | |
1769 | preprocessing assembly. So 1 and 2 are all we | |
1770 | care about, and they are mutually incompatible. | |
1771 | new_logical_line_flags() demands this. */ | |
1772 | case 1: | |
1773 | case 2: | |
1774 | if (flags && flags != (1 << this_flag)) | |
1775 | as_warn (_("incompatible flag %i in line directive"), | |
1776 | this_flag); | |
1777 | else | |
1778 | flags |= 1 << this_flag; | |
1779 | break; | |
1780 | ||
1781 | case 3: | |
1782 | case 4: | |
1783 | /* We ignore these. */ | |
1784 | break; | |
1785 | ||
1786 | default: | |
1787 | as_warn (_("unsupported flag %i in line directive"), | |
1788 | this_flag); | |
1789 | break; | |
1790 | } | |
e9fc6c21 AO |
1791 | |
1792 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
1793 | file = 0; | |
93e914b2 AO |
1794 | } |
1795 | } | |
1796 | ||
e9fc6c21 AO |
1797 | if (appline || file) |
1798 | { | |
1799 | new_logical_line_flags (file, l, flags); | |
252b5132 | 1800 | #ifdef LISTING |
e9fc6c21 AO |
1801 | if (listing) |
1802 | listing_source_line (l); | |
252b5132 | 1803 | #endif |
e9fc6c21 | 1804 | } |
252b5132 | 1805 | } |
e9fc6c21 AO |
1806 | if (appline || file) |
1807 | demand_empty_rest_of_line (); | |
1808 | else | |
1809 | ignore_rest_of_line (); | |
252b5132 RH |
1810 | } |
1811 | ||
1812 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1813 | read_a_source_file. */ | |
1814 | ||
1815 | void | |
39e6acbd | 1816 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1817 | { |
1818 | if (flag_mri) | |
1819 | { | |
1820 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 1821 | but we don't support that. */ |
252b5132 | 1822 | SKIP_WHITESPACE (); |
041ff4dd | 1823 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1824 | && *input_line_pointer != '*' |
1825 | && *input_line_pointer != '!') | |
1826 | as_warn (_("start address not supported")); | |
1827 | } | |
1828 | } | |
1829 | ||
1830 | /* Handle the .err pseudo-op. */ | |
1831 | ||
1832 | void | |
39e6acbd | 1833 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1834 | { |
1835 | as_bad (_(".err encountered")); | |
1836 | demand_empty_rest_of_line (); | |
d190d046 HPN |
1837 | } |
1838 | ||
1839 | /* Handle the .error and .warning pseudo-ops. */ | |
1840 | ||
1841 | void | |
1842 | s_errwarn (int err) | |
1843 | { | |
1844 | int len; | |
1845 | /* The purpose for the conditional assignment is not to | |
1846 | internationalize the directive itself, but that we need a | |
1847 | self-contained message, one that can be passed like the | |
1848 | demand_copy_C_string return value, and with no assumption on the | |
1849 | location of the name of the directive within the message. */ | |
1850 | char *msg | |
1851 | = (err ? _(".error directive invoked in source file") | |
1852 | : _(".warning directive invoked in source file")); | |
1853 | ||
1854 | if (!is_it_end_of_statement ()) | |
1855 | { | |
1856 | if (*input_line_pointer != '\"') | |
1857 | { | |
1858 | as_bad (_("%s argument must be a string"), | |
1859 | err ? ".error" : ".warning"); | |
40a4d956 | 1860 | ignore_rest_of_line (); |
d190d046 HPN |
1861 | return; |
1862 | } | |
1863 | ||
1864 | msg = demand_copy_C_string (&len); | |
1865 | if (msg == NULL) | |
1866 | return; | |
1867 | } | |
1868 | ||
1869 | if (err) | |
1870 | as_bad ("%s", msg); | |
1871 | else | |
1872 | as_warn ("%s", msg); | |
1873 | demand_empty_rest_of_line (); | |
252b5132 RH |
1874 | } |
1875 | ||
1876 | /* Handle the MRI fail pseudo-op. */ | |
1877 | ||
1878 | void | |
39e6acbd | 1879 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1880 | { |
1881 | offsetT temp; | |
1882 | char *stop = NULL; | |
fb25138b | 1883 | char stopc = 0; |
252b5132 RH |
1884 | |
1885 | if (flag_mri) | |
1886 | stop = mri_comment_field (&stopc); | |
1887 | ||
1888 | temp = get_absolute_expression (); | |
1889 | if (temp >= 500) | |
1890 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1891 | else | |
1892 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1893 | ||
1894 | demand_empty_rest_of_line (); | |
1895 | ||
1896 | if (flag_mri) | |
1897 | mri_comment_end (stop, stopc); | |
1898 | } | |
1899 | ||
041ff4dd | 1900 | void |
39e6acbd | 1901 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1902 | { |
1903 | expressionS rep_exp; | |
1904 | long size = 1; | |
1905 | register long fill = 0; | |
1906 | char *p; | |
1907 | ||
1908 | #ifdef md_flush_pending_output | |
1909 | md_flush_pending_output (); | |
1910 | #endif | |
1911 | ||
1912 | get_known_segmented_expression (&rep_exp); | |
1913 | if (*input_line_pointer == ',') | |
1914 | { | |
1915 | input_line_pointer++; | |
1916 | size = get_absolute_expression (); | |
1917 | if (*input_line_pointer == ',') | |
1918 | { | |
1919 | input_line_pointer++; | |
1920 | fill = get_absolute_expression (); | |
1921 | } | |
1922 | } | |
1923 | ||
1924 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1925 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1926 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1927 | { | |
0e389e77 | 1928 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
1929 | size = BSD_FILL_SIZE_CROCK_8; |
1930 | } | |
1931 | if (size < 0) | |
1932 | { | |
0e389e77 | 1933 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
1934 | size = 0; |
1935 | } | |
1936 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1937 | { | |
1938 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 1939 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
1940 | size = 0; |
1941 | } | |
1942 | ||
1943 | if (size && !need_pass_2) | |
1944 | { | |
1945 | if (rep_exp.X_op == O_constant) | |
1946 | { | |
1947 | p = frag_var (rs_fill, (int) size, (int) size, | |
1948 | (relax_substateT) 0, (symbolS *) 0, | |
1949 | (offsetT) rep_exp.X_add_number, | |
1950 | (char *) 0); | |
1951 | } | |
1952 | else | |
1953 | { | |
1954 | /* We don't have a constant repeat count, so we can't use | |
1955 | rs_fill. We can get the same results out of rs_space, | |
1956 | but its argument is in bytes, so we must multiply the | |
1957 | repeat count by size. */ | |
1958 | ||
1959 | symbolS *rep_sym; | |
1960 | rep_sym = make_expr_symbol (&rep_exp); | |
1961 | if (size != 1) | |
1962 | { | |
1963 | expressionS size_exp; | |
1964 | size_exp.X_op = O_constant; | |
1965 | size_exp.X_add_number = size; | |
1966 | ||
1967 | rep_exp.X_op = O_multiply; | |
1968 | rep_exp.X_add_symbol = rep_sym; | |
1969 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1970 | rep_exp.X_add_number = 0; | |
1971 | rep_sym = make_expr_symbol (&rep_exp); | |
1972 | } | |
1973 | ||
1974 | p = frag_var (rs_space, (int) size, (int) size, | |
1975 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1976 | } | |
f0e652b4 | 1977 | |
252b5132 | 1978 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 1979 | |
252b5132 | 1980 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
1981 | flavoured AS. The following bizarre behaviour is to be |
1982 | compatible with above. I guess they tried to take up to 8 | |
1983 | bytes from a 4-byte expression and they forgot to sign | |
1984 | extend. */ | |
252b5132 RH |
1985 | #define BSD_FILL_SIZE_CROCK_4 (4) |
1986 | md_number_to_chars (p, (valueT) fill, | |
1987 | (size > BSD_FILL_SIZE_CROCK_4 | |
1988 | ? BSD_FILL_SIZE_CROCK_4 | |
1989 | : (int) size)); | |
1990 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
1991 | but emits no error message because it seems a legal thing to do. |
1992 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 1993 | compiler. */ |
252b5132 RH |
1994 | } |
1995 | demand_empty_rest_of_line (); | |
1996 | } | |
1997 | ||
041ff4dd | 1998 | void |
39e6acbd | 1999 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2000 | { |
2001 | char *name; | |
2002 | int c; | |
2003 | symbolS *symbolP; | |
2004 | char *stop = NULL; | |
fb25138b | 2005 | char stopc = 0; |
252b5132 RH |
2006 | |
2007 | if (flag_mri) | |
2008 | stop = mri_comment_field (&stopc); | |
2009 | ||
2010 | do | |
2011 | { | |
2012 | name = input_line_pointer; | |
2013 | c = get_symbol_end (); | |
2014 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
2015 | S_SET_EXTERNAL (symbolP); |
2016 | ||
252b5132 RH |
2017 | *input_line_pointer = c; |
2018 | SKIP_WHITESPACE (); | |
58b5739a | 2019 | c = *input_line_pointer; |
252b5132 RH |
2020 | if (c == ',') |
2021 | { | |
2022 | input_line_pointer++; | |
2023 | SKIP_WHITESPACE (); | |
0e389e77 | 2024 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2025 | c = '\n'; |
2026 | } | |
2027 | } | |
2028 | while (c == ','); | |
2029 | ||
2030 | demand_empty_rest_of_line (); | |
2031 | ||
2032 | if (flag_mri) | |
2033 | mri_comment_end (stop, stopc); | |
2034 | } | |
2035 | ||
2036 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2037 | ||
2038 | void | |
39e6acbd | 2039 | s_irp (int irpc) |
252b5132 | 2040 | { |
40a4d956 | 2041 | char *file, *eol; |
252b5132 RH |
2042 | unsigned int line; |
2043 | sb s; | |
2044 | const char *err; | |
2045 | sb out; | |
2046 | ||
2047 | as_where (&file, &line); | |
2048 | ||
2049 | sb_new (&s); | |
40a4d956 JB |
2050 | eol = find_end_of_line (input_line_pointer, 0); |
2051 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2052 | input_line_pointer = eol; | |
252b5132 RH |
2053 | |
2054 | sb_new (&out); | |
2055 | ||
fea17916 | 2056 | err = expand_irp (irpc, 0, &s, &out, get_line_sb); |
252b5132 RH |
2057 | if (err != NULL) |
2058 | as_bad_where (file, line, "%s", err); | |
2059 | ||
2060 | sb_kill (&s); | |
2061 | ||
9f10757c | 2062 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2063 | sb_kill (&out); |
2064 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2065 | } | |
2066 | ||
2067 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2068 | the section to only be linked once. However, this is not supported | |
2069 | by most object file formats. This takes an optional argument, | |
2070 | which is what to do about duplicates. */ | |
2071 | ||
2072 | void | |
39e6acbd | 2073 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2074 | { |
2075 | enum linkonce_type type; | |
2076 | ||
2077 | SKIP_WHITESPACE (); | |
2078 | ||
2079 | type = LINKONCE_DISCARD; | |
2080 | ||
041ff4dd | 2081 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2082 | { |
2083 | char *s; | |
2084 | char c; | |
2085 | ||
2086 | s = input_line_pointer; | |
2087 | c = get_symbol_end (); | |
2088 | if (strcasecmp (s, "discard") == 0) | |
2089 | type = LINKONCE_DISCARD; | |
2090 | else if (strcasecmp (s, "one_only") == 0) | |
2091 | type = LINKONCE_ONE_ONLY; | |
2092 | else if (strcasecmp (s, "same_size") == 0) | |
2093 | type = LINKONCE_SAME_SIZE; | |
2094 | else if (strcasecmp (s, "same_contents") == 0) | |
2095 | type = LINKONCE_SAME_CONTENTS; | |
2096 | else | |
2097 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2098 | ||
2099 | *input_line_pointer = c; | |
2100 | } | |
2101 | ||
2102 | #ifdef obj_handle_link_once | |
2103 | obj_handle_link_once (type); | |
2104 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2105 | { |
2106 | flagword flags; | |
2107 | ||
2108 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2109 | as_warn (_(".linkonce is not supported for this object file format")); | |
2110 | ||
2111 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2112 | flags |= SEC_LINK_ONCE; | |
2113 | switch (type) | |
2114 | { | |
2115 | default: | |
2116 | abort (); | |
2117 | case LINKONCE_DISCARD: | |
2118 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2119 | break; | |
2120 | case LINKONCE_ONE_ONLY: | |
2121 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2122 | break; | |
2123 | case LINKONCE_SAME_SIZE: | |
2124 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2125 | break; | |
2126 | case LINKONCE_SAME_CONTENTS: | |
2127 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2128 | break; | |
2129 | } | |
041ff4dd | 2130 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2131 | as_bad (_("bfd_set_section_flags: %s"), |
2132 | bfd_errmsg (bfd_get_error ())); | |
2133 | } | |
252b5132 RH |
2134 | #endif /* ! defined (obj_handle_link_once) */ |
2135 | ||
2136 | demand_empty_rest_of_line (); | |
2137 | } | |
2138 | ||
e13bab5a AM |
2139 | void |
2140 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2141 | { |
e13bab5a | 2142 | char *pfrag; |
252b5132 RH |
2143 | segT current_seg = now_seg; |
2144 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2145 | segT bss_seg = bss_section; |
2146 | ||
252b5132 RH |
2147 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2148 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2149 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2150 | { | |
2151 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2152 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2153 | { |
2154 | bss_seg = subseg_new (".sbss", 1); | |
2155 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2156 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2157 | as_warn (_("error setting flags for \".sbss\": %s"), |
2158 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2159 | } |
2160 | } | |
2161 | #endif | |
e13bab5a | 2162 | subseg_set (bss_seg, 1); |
8684e216 | 2163 | |
e13bab5a | 2164 | if (align) |
041ff4dd | 2165 | { |
e13bab5a AM |
2166 | record_alignment (bss_seg, align); |
2167 | frag_align (align, 0, 0); | |
041ff4dd | 2168 | } |
252b5132 | 2169 | |
e13bab5a AM |
2170 | /* Detach from old frag. */ |
2171 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2172 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2173 | |
e13bab5a AM |
2174 | symbol_set_frag (symbolP, frag_now); |
2175 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2176 | *pfrag = 0; | |
f0e652b4 | 2177 | |
e13bab5a AM |
2178 | #ifdef S_SET_SIZE |
2179 | S_SET_SIZE (symbolP, size); | |
2180 | #endif | |
2181 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2182 | |
e13bab5a AM |
2183 | #ifdef OBJ_COFF |
2184 | /* The symbol may already have been created with a preceding | |
2185 | ".globl" directive -- be careful not to step on storage class | |
2186 | in that case. Otherwise, set it to static. */ | |
2187 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2188 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2189 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2190 | |
e13bab5a AM |
2191 | subseg_set (current_seg, current_subseg); |
2192 | } | |
f0e652b4 | 2193 | |
e13bab5a AM |
2194 | offsetT |
2195 | parse_align (int align_bytes) | |
2196 | { | |
2197 | expressionS exp; | |
2198 | addressT align; | |
252b5132 | 2199 | |
e13bab5a AM |
2200 | SKIP_WHITESPACE (); |
2201 | if (*input_line_pointer != ',') | |
2202 | { | |
2203 | no_align: | |
2204 | as_bad (_("expected alignment after size")); | |
2205 | ignore_rest_of_line (); | |
2206 | return -1; | |
2207 | } | |
f0e652b4 | 2208 | |
e13bab5a AM |
2209 | input_line_pointer++; |
2210 | SKIP_WHITESPACE (); | |
f0e652b4 | 2211 | |
e13bab5a AM |
2212 | align = get_absolute_expr (&exp); |
2213 | if (exp.X_op == O_absent) | |
2214 | goto no_align; | |
2215 | ||
2216 | if (!exp.X_unsigned) | |
2217 | { | |
2218 | as_warn (_("alignment negative; 0 assumed")); | |
2219 | align = 0; | |
041ff4dd | 2220 | } |
e13bab5a AM |
2221 | |
2222 | if (align_bytes && align != 0) | |
252b5132 | 2223 | { |
e13bab5a AM |
2224 | /* convert to a power of 2 alignment */ |
2225 | unsigned int alignp2 = 0; | |
2226 | while ((align & 1) == 0) | |
2227 | align >>= 1, ++alignp2; | |
2228 | if (align != 1) | |
252b5132 | 2229 | { |
e13bab5a AM |
2230 | as_bad (_("alignment not a power of 2")); |
2231 | ignore_rest_of_line (); | |
2232 | return -1; | |
252b5132 | 2233 | } |
e13bab5a | 2234 | align = alignp2; |
252b5132 | 2235 | } |
e13bab5a AM |
2236 | return align; |
2237 | } | |
252b5132 | 2238 | |
e13bab5a AM |
2239 | /* Called from s_comm_internal after symbol name and size have been |
2240 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2241 | 1 if this was a ".bss" directive which has a 3rd argument | |
2242 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2243 | with alignment in bytes. */ | |
252b5132 | 2244 | |
13c56984 | 2245 | symbolS * |
e13bab5a AM |
2246 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2247 | { | |
2248 | addressT align = 0; | |
252b5132 | 2249 | |
e13bab5a AM |
2250 | if (needs_align) |
2251 | { | |
2252 | align = parse_align (needs_align - 1); | |
2253 | if (align == (addressT) -1) | |
2254 | return NULL; | |
252b5132 RH |
2255 | } |
2256 | else | |
e13bab5a AM |
2257 | /* Assume some objects may require alignment on some systems. */ |
2258 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2259 | |
e13bab5a AM |
2260 | bss_alloc (symbolP, size, align); |
2261 | return symbolP; | |
041ff4dd | 2262 | } |
252b5132 RH |
2263 | |
2264 | void | |
39e6acbd | 2265 | s_lcomm (int needs_align) |
252b5132 | 2266 | { |
e13bab5a | 2267 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2268 | } |
2269 | ||
041ff4dd | 2270 | void |
39e6acbd | 2271 | s_lcomm_bytes (int needs_align) |
252b5132 | 2272 | { |
e13bab5a | 2273 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2274 | } |
2275 | ||
041ff4dd | 2276 | void |
39e6acbd | 2277 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2278 | { |
2279 | register char *name; | |
2280 | register char c; | |
2281 | register char *p; | |
2282 | expressionS exp; | |
2283 | register symbolS *symbolP; | |
2284 | ||
041ff4dd | 2285 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2286 | name = input_line_pointer; |
2287 | c = get_symbol_end (); | |
2288 | p = input_line_pointer; | |
2289 | *p = c; | |
0e389e77 AM |
2290 | |
2291 | if (name == p) | |
2292 | { | |
2293 | as_bad (_("expected symbol name")); | |
40a4d956 | 2294 | ignore_rest_of_line (); |
0e389e77 AM |
2295 | return; |
2296 | } | |
2297 | ||
252b5132 | 2298 | SKIP_WHITESPACE (); |
f0e652b4 | 2299 | |
252b5132 RH |
2300 | if (*input_line_pointer != ',') |
2301 | { | |
2302 | *p = 0; | |
0e389e77 | 2303 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2304 | *p = c; |
2305 | ignore_rest_of_line (); | |
2306 | return; | |
2307 | } | |
f0e652b4 | 2308 | |
252b5132 | 2309 | input_line_pointer++; |
9497f5ac | 2310 | expression_and_evaluate (&exp); |
f0e652b4 | 2311 | |
252b5132 RH |
2312 | if (exp.X_op != O_constant |
2313 | && exp.X_op != O_register) | |
2314 | { | |
2315 | as_bad (_("bad expression")); | |
2316 | ignore_rest_of_line (); | |
2317 | return; | |
2318 | } | |
f0e652b4 | 2319 | |
252b5132 RH |
2320 | *p = 0; |
2321 | symbolP = symbol_find_or_make (name); | |
2322 | ||
86ebace2 | 2323 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2324 | { |
2325 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2326 | keep the "external" bit. */ |
252b5132 RH |
2327 | S_SET_SEGMENT (symbolP, |
2328 | (exp.X_op == O_constant | |
2329 | ? absolute_section | |
2330 | : reg_section)); | |
2331 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2332 | } | |
2333 | else | |
2334 | { | |
0e389e77 | 2335 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2336 | } |
f0e652b4 | 2337 | |
252b5132 RH |
2338 | *p = c; |
2339 | demand_empty_rest_of_line (); | |
041ff4dd | 2340 | } |
252b5132 | 2341 | |
0822d075 NC |
2342 | /* Read a line into an sb. Returns the character that ended the line |
2343 | or zero if there are no more lines. */ | |
252b5132 RH |
2344 | |
2345 | static int | |
39e6acbd | 2346 | get_line_sb (sb *line) |
252b5132 | 2347 | { |
40a4d956 | 2348 | char *eol; |
252b5132 RH |
2349 | |
2350 | if (input_line_pointer[-1] == '\n') | |
2351 | bump_line_counters (); | |
2352 | ||
2353 | if (input_line_pointer >= buffer_limit) | |
2354 | { | |
2355 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2356 | if (buffer_limit == 0) | |
2357 | return 0; | |
2358 | } | |
2359 | ||
40a4d956 JB |
2360 | eol = find_end_of_line (input_line_pointer, flag_m68k_mri); |
2361 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); | |
2362 | input_line_pointer = eol; | |
f0e652b4 | 2363 | |
0822d075 NC |
2364 | /* Don't skip multiple end-of-line characters, because that breaks support |
2365 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2366 | characters but isn't. Instead just skip one end of line character and | |
2367 | return the character skipped so that the caller can re-insert it if | |
2368 | necessary. */ | |
40a4d956 | 2369 | return *input_line_pointer++; |
252b5132 RH |
2370 | } |
2371 | ||
fea17916 | 2372 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2373 | |
2374 | void | |
39e6acbd | 2375 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2376 | { |
40a4d956 | 2377 | char *file, *eol; |
252b5132 RH |
2378 | unsigned int line; |
2379 | sb s; | |
252b5132 RH |
2380 | const char *err; |
2381 | const char *name; | |
2382 | ||
2383 | as_where (&file, &line); | |
2384 | ||
2385 | sb_new (&s); | |
40a4d956 JB |
2386 | eol = find_end_of_line (input_line_pointer, 0); |
2387 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2388 | input_line_pointer = eol; | |
252b5132 | 2389 | |
252b5132 | 2390 | if (line_label != NULL) |
360e86f1 JB |
2391 | { |
2392 | sb label; | |
252b5132 | 2393 | |
360e86f1 JB |
2394 | sb_new (&label); |
2395 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2396 | err = define_macro (0, &s, &label, get_line_sb, file, line, &name); | |
2397 | sb_kill (&label); | |
2398 | } | |
2399 | else | |
2400 | err = define_macro (0, &s, NULL, get_line_sb, file, line, &name); | |
252b5132 | 2401 | if (err != NULL) |
02ddf156 | 2402 | as_bad_where (file, line, err, name); |
252b5132 RH |
2403 | else |
2404 | { | |
2405 | if (line_label != NULL) | |
2406 | { | |
5e75c3ab | 2407 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2408 | S_SET_VALUE (line_label, 0); |
2b47531b | 2409 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2410 | } |
2411 | ||
abd63a32 | 2412 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2413 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2414 | || (!flag_m68k_mri |
252b5132 RH |
2415 | && *name == '.' |
2416 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2417 | as_warn_where (file, |
2418 | line, | |
2419 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2420 | name); |
2421 | } | |
2422 | ||
2423 | sb_kill (&s); | |
2424 | } | |
2425 | ||
2426 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2427 | expansion. */ | |
2428 | ||
2429 | void | |
39e6acbd | 2430 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2431 | { |
2432 | cond_exit_macro (macro_nest); | |
2433 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2434 | } | |
2435 | ||
2436 | /* Switch in and out of MRI mode. */ | |
2437 | ||
2438 | void | |
39e6acbd | 2439 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2440 | { |
2441 | int on, old_flag; | |
2442 | ||
2443 | on = get_absolute_expression (); | |
2444 | old_flag = flag_mri; | |
2445 | if (on != 0) | |
2446 | { | |
2447 | flag_mri = 1; | |
2448 | #ifdef TC_M68K | |
2449 | flag_m68k_mri = 1; | |
2450 | #endif | |
2451 | macro_mri_mode (1); | |
2452 | } | |
2453 | else | |
2454 | { | |
2455 | flag_mri = 0; | |
abd63a32 | 2456 | #ifdef TC_M68K |
252b5132 | 2457 | flag_m68k_mri = 0; |
abd63a32 | 2458 | #endif |
252b5132 RH |
2459 | macro_mri_mode (0); |
2460 | } | |
2461 | ||
2462 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2463 | update the operator rankings. */ | |
2464 | expr_set_precedence (); | |
2465 | ||
2466 | #ifdef MRI_MODE_CHANGE | |
2467 | if (on != old_flag) | |
2468 | MRI_MODE_CHANGE (on); | |
2469 | #endif | |
2470 | ||
2471 | demand_empty_rest_of_line (); | |
2472 | } | |
2473 | ||
2474 | /* Handle changing the location counter. */ | |
2475 | ||
2476 | static void | |
39e6acbd | 2477 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 RH |
2478 | { |
2479 | if (segment != now_seg && segment != absolute_section) | |
0e389e77 | 2480 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2481 | |
2482 | if (now_seg == absolute_section) | |
2483 | { | |
2484 | if (fill != 0) | |
2485 | as_warn (_("ignoring fill value in absolute section")); | |
2486 | if (exp->X_op != O_constant) | |
2487 | { | |
2488 | as_bad (_("only constant offsets supported in absolute section")); | |
2489 | exp->X_add_number = 0; | |
2490 | } | |
2491 | abs_section_offset = exp->X_add_number; | |
2492 | } | |
2493 | else | |
2494 | { | |
2495 | char *p; | |
2289f85d AM |
2496 | symbolS *sym = exp->X_add_symbol; |
2497 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2498 | |
2289f85d AM |
2499 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2500 | { | |
2501 | /* Handle complex expressions. */ | |
2502 | sym = make_expr_symbol (exp); | |
2503 | off = 0; | |
2504 | } | |
2505 | ||
2506 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2507 | *p = fill; |
2508 | } | |
2509 | } | |
2510 | ||
041ff4dd | 2511 | void |
39e6acbd | 2512 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2513 | { |
2514 | register segT segment; | |
2515 | expressionS exp; | |
2516 | register long temp_fill; | |
2517 | ||
2518 | #ifdef md_flush_pending_output | |
2519 | md_flush_pending_output (); | |
2520 | #endif | |
2521 | ||
2522 | /* The m68k MRI assembler has a different meaning for .org. It | |
2523 | means to create an absolute section at a given address. We can't | |
2524 | support that--use a linker script instead. */ | |
2525 | if (flag_m68k_mri) | |
2526 | { | |
2527 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2528 | ignore_rest_of_line (); | |
2529 | return; | |
2530 | } | |
2531 | ||
2532 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2533 | thing as a sub-segment-relative origin. Any absolute origin is | |
2534 | given a warning, then assumed to be segment-relative. Any | |
2535 | segmented origin expression ("foo+42") had better be in the right | |
2536 | segment or the .org is ignored. | |
2537 | ||
2538 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2539 | we never know sub-segment sizes when we are reading code. BSD | |
2540 | will crash trying to emit negative numbers of filler bytes in | |
2541 | certain .orgs. We don't crash, but see as-write for that code. | |
2542 | ||
2543 | Don't make frag if need_pass_2==1. */ | |
2544 | segment = get_known_segmented_expression (&exp); | |
2545 | if (*input_line_pointer == ',') | |
2546 | { | |
2547 | input_line_pointer++; | |
2548 | temp_fill = get_absolute_expression (); | |
2549 | } | |
2550 | else | |
2551 | temp_fill = 0; | |
2552 | ||
2553 | if (!need_pass_2) | |
2554 | do_org (segment, &exp, temp_fill); | |
2555 | ||
2556 | demand_empty_rest_of_line (); | |
041ff4dd | 2557 | } |
252b5132 RH |
2558 | |
2559 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2560 | called by the obj-format routine which handles section changing | |
2561 | when in MRI mode. It will create a new section, and return it. It | |
2562 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2563 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2564 | |
2565 | void | |
39e6acbd | 2566 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2567 | { |
2568 | #ifdef TC_M68K | |
2569 | ||
2570 | char *name; | |
2571 | char c; | |
2572 | segT seg; | |
2573 | ||
2574 | SKIP_WHITESPACE (); | |
041ff4dd | 2575 | |
252b5132 | 2576 | name = input_line_pointer; |
3882b010 | 2577 | if (!ISDIGIT (*name)) |
252b5132 RH |
2578 | c = get_symbol_end (); |
2579 | else | |
2580 | { | |
2581 | do | |
2582 | { | |
2583 | ++input_line_pointer; | |
2584 | } | |
3882b010 | 2585 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2586 | |
252b5132 RH |
2587 | c = *input_line_pointer; |
2588 | *input_line_pointer = '\0'; | |
2589 | } | |
2590 | ||
2591 | name = xstrdup (name); | |
2592 | ||
2593 | *input_line_pointer = c; | |
2594 | ||
2595 | seg = subseg_new (name, 0); | |
2596 | ||
2597 | if (*input_line_pointer == ',') | |
2598 | { | |
2599 | int align; | |
2600 | ||
2601 | ++input_line_pointer; | |
2602 | align = get_absolute_expression (); | |
2603 | record_alignment (seg, align); | |
2604 | } | |
2605 | ||
2606 | *type = 'C'; | |
2607 | if (*input_line_pointer == ',') | |
2608 | { | |
2609 | c = *++input_line_pointer; | |
3882b010 | 2610 | c = TOUPPER (c); |
252b5132 RH |
2611 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2612 | *type = c; | |
2613 | else | |
2614 | as_bad (_("unrecognized section type")); | |
2615 | ++input_line_pointer; | |
2616 | ||
252b5132 RH |
2617 | { |
2618 | flagword flags; | |
2619 | ||
2620 | flags = SEC_NO_FLAGS; | |
2621 | if (*type == 'C') | |
2622 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2623 | else if (*type == 'D' || *type == 'M') | |
2624 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2625 | else if (*type == 'R') | |
2626 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2627 | if (flags != SEC_NO_FLAGS) | |
2628 | { | |
041ff4dd | 2629 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2630 | as_warn (_("error setting flags for \"%s\": %s"), |
2631 | bfd_section_name (stdoutput, seg), | |
2632 | bfd_errmsg (bfd_get_error ())); | |
2633 | } | |
2634 | } | |
252b5132 RH |
2635 | } |
2636 | ||
2637 | /* Ignore the HP type. */ | |
2638 | if (*input_line_pointer == ',') | |
2639 | input_line_pointer += 2; | |
2640 | ||
2641 | demand_empty_rest_of_line (); | |
2642 | ||
2643 | #else /* ! TC_M68K */ | |
2644 | #ifdef TC_I960 | |
2645 | ||
2646 | char *name; | |
2647 | char c; | |
2648 | segT seg; | |
2649 | ||
2650 | SKIP_WHITESPACE (); | |
2651 | ||
2652 | name = input_line_pointer; | |
2653 | c = get_symbol_end (); | |
2654 | ||
2655 | name = xstrdup (name); | |
2656 | ||
2657 | *input_line_pointer = c; | |
2658 | ||
2659 | seg = subseg_new (name, 0); | |
2660 | ||
2661 | if (*input_line_pointer != ',') | |
2662 | *type = 'C'; | |
2663 | else | |
2664 | { | |
2665 | char *sectype; | |
2666 | ||
2667 | ++input_line_pointer; | |
2668 | SKIP_WHITESPACE (); | |
2669 | sectype = input_line_pointer; | |
2670 | c = get_symbol_end (); | |
2671 | if (*sectype == '\0') | |
2672 | *type = 'C'; | |
2673 | else if (strcasecmp (sectype, "text") == 0) | |
2674 | *type = 'C'; | |
2675 | else if (strcasecmp (sectype, "data") == 0) | |
2676 | *type = 'D'; | |
2677 | else if (strcasecmp (sectype, "romdata") == 0) | |
2678 | *type = 'R'; | |
2679 | else | |
2680 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2681 | *input_line_pointer = c; | |
2682 | } | |
2683 | ||
2684 | if (*input_line_pointer == ',') | |
2685 | { | |
2686 | char *seccmd; | |
2687 | ||
2688 | ++input_line_pointer; | |
2689 | SKIP_WHITESPACE (); | |
2690 | seccmd = input_line_pointer; | |
2691 | c = get_symbol_end (); | |
2692 | if (strcasecmp (seccmd, "absolute") == 0) | |
2693 | { | |
2694 | as_bad (_("absolute sections are not supported")); | |
2695 | *input_line_pointer = c; | |
2696 | ignore_rest_of_line (); | |
2697 | return; | |
2698 | } | |
2699 | else if (strcasecmp (seccmd, "align") == 0) | |
2700 | { | |
2701 | int align; | |
2702 | ||
2703 | *input_line_pointer = c; | |
2704 | align = get_absolute_expression (); | |
2705 | record_alignment (seg, align); | |
2706 | } | |
2707 | else | |
2708 | { | |
2709 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2710 | *input_line_pointer = c; | |
2711 | } | |
2712 | } | |
2713 | ||
041ff4dd | 2714 | demand_empty_rest_of_line (); |
252b5132 RH |
2715 | |
2716 | #else /* ! TC_I960 */ | |
2717 | /* The MRI assembler seems to use different forms of .sect for | |
2718 | different targets. */ | |
2719 | as_bad ("MRI mode not supported for this target"); | |
2720 | ignore_rest_of_line (); | |
2721 | #endif /* ! TC_I960 */ | |
2722 | #endif /* ! TC_M68K */ | |
2723 | } | |
2724 | ||
2725 | /* Handle the .print pseudo-op. */ | |
2726 | ||
2727 | void | |
39e6acbd | 2728 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2729 | { |
2730 | char *s; | |
2731 | int len; | |
2732 | ||
2733 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
2734 | if (s != NULL) |
2735 | printf ("%s\n", s); | |
252b5132 RH |
2736 | demand_empty_rest_of_line (); |
2737 | } | |
2738 | ||
2739 | /* Handle the .purgem pseudo-op. */ | |
2740 | ||
2741 | void | |
39e6acbd | 2742 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2743 | { |
2744 | if (is_it_end_of_statement ()) | |
2745 | { | |
2746 | demand_empty_rest_of_line (); | |
2747 | return; | |
2748 | } | |
2749 | ||
2750 | do | |
2751 | { | |
2752 | char *name; | |
2753 | char c; | |
2754 | ||
2755 | SKIP_WHITESPACE (); | |
2756 | name = input_line_pointer; | |
2757 | c = get_symbol_end (); | |
2758 | delete_macro (name); | |
2759 | *input_line_pointer = c; | |
2760 | SKIP_WHITESPACE (); | |
2761 | } | |
2762 | while (*input_line_pointer++ == ','); | |
2763 | ||
2764 | --input_line_pointer; | |
2765 | demand_empty_rest_of_line (); | |
2766 | } | |
2767 | ||
057f53c1 | 2768 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 2769 | |
057f53c1 JB |
2770 | static void |
2771 | s_bad_end (int endr) | |
7f28ab9d | 2772 | { |
057f53c1 JB |
2773 | as_warn (_(".end%c encountered without preceeding %s"), |
2774 | endr ? 'r' : 'm', | |
2775 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
2776 | demand_empty_rest_of_line (); |
2777 | } | |
2778 | ||
2779 | /* Handle the .rept pseudo-op. */ | |
2780 | ||
252b5132 | 2781 | void |
39e6acbd | 2782 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2783 | { |
2784 | int count; | |
252b5132 RH |
2785 | |
2786 | count = get_absolute_expression (); | |
2787 | ||
041ff4dd | 2788 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2789 | } |
2790 | ||
2791 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2792 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2793 | |
2794 | void | |
39e6acbd | 2795 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
2796 | { |
2797 | sb one; | |
2798 | sb many; | |
2799 | ||
252b5132 | 2800 | sb_new (&one); |
041ff4dd | 2801 | if (!buffer_and_nest (start, end, &one, get_line_sb)) |
252b5132 | 2802 | { |
6dc19fc4 | 2803 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2804 | return; |
2805 | } | |
2806 | ||
2807 | sb_new (&many); | |
2808 | while (count-- > 0) | |
2809 | sb_add_sb (&many, &one); | |
2810 | ||
2811 | sb_kill (&one); | |
2812 | ||
9f10757c | 2813 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2814 | sb_kill (&many); |
2815 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2816 | } | |
2817 | ||
6dc19fc4 TW |
2818 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
2819 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 2820 | are properly nested. |
6dc19fc4 TW |
2821 | |
2822 | This function makes it easier to implement a premature "break" out of the | |
2823 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 2824 | such as line substitutions. */ |
6dc19fc4 TW |
2825 | |
2826 | void | |
39e6acbd | 2827 | end_repeat (int extra) |
6dc19fc4 TW |
2828 | { |
2829 | cond_exit_macro (macro_nest); | |
2830 | while (extra-- >= 0) | |
2831 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2832 | } | |
2833 | ||
be95a9c1 | 2834 | static void |
9497f5ac | 2835 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
2836 | { |
2837 | symbolS *symbolP; | |
2838 | ||
2839 | if (name[0] == '.' && name[1] == '\0') | |
2840 | { | |
2841 | /* Turn '. = mumble' into a .org mumble. */ | |
2842 | segT segment; | |
2843 | expressionS exp; | |
2844 | ||
2845 | segment = get_known_segmented_expression (&exp); | |
2846 | ||
2847 | if (!need_pass_2) | |
2848 | do_org (segment, &exp, 0); | |
2849 | ||
2850 | return; | |
2851 | } | |
2852 | ||
2853 | if ((symbolP = symbol_find (name)) == NULL | |
2854 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2855 | { | |
2856 | symbolP = symbol_find_or_make (name); | |
2857 | #ifndef NO_LISTING | |
2858 | /* When doing symbol listings, play games with dummy fragments living | |
2859 | outside the normal fragment chain to record the file and line info | |
2860 | for this symbol. */ | |
2861 | if (listing & LISTING_SYMBOLS) | |
2862 | { | |
2863 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 2864 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
2865 | dummy_frag->line = listing_tail; |
2866 | dummy_frag->fr_symbol = symbolP; | |
2867 | symbol_set_frag (symbolP, dummy_frag); | |
2868 | } | |
2869 | #endif | |
31d20a21 AM |
2870 | #ifdef OBJ_COFF |
2871 | /* "set" symbols are local unless otherwise specified. */ | |
2872 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
2873 | #endif |
2874 | } | |
2875 | ||
6a2b6326 | 2876 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac NC |
2877 | { |
2878 | /* Permit register names to be redefined. */ | |
2879 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) | |
2880 | && S_GET_SEGMENT (symbolP) != reg_section) | |
2881 | { | |
2882 | as_bad (_("symbol `%s' is already defined"), name); | |
2883 | symbolP = symbol_clone (symbolP, 0); | |
2884 | } | |
2885 | /* If the symbol is volatile, copy the symbol and replace the | |
2886 | original with the copy, so that previous uses of the symbol will | |
2887 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 2888 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
2889 | symbolP = symbol_clone (symbolP, 1); |
2890 | } | |
2891 | ||
2892 | if (mode == 0) | |
2893 | S_SET_VOLATILE (symbolP); | |
2894 | else if (mode < 0) | |
2895 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
2896 | |
2897 | pseudo_set (symbolP); | |
be95a9c1 AM |
2898 | } |
2899 | ||
9497f5ac NC |
2900 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
2901 | then this is .equiv, and it is an error if the symbol is already | |
2902 | defined. If EQUIV is -1, the symbol additionally is a forward | |
2903 | reference. */ | |
252b5132 | 2904 | |
041ff4dd | 2905 | void |
39e6acbd | 2906 | s_set (int equiv) |
252b5132 | 2907 | { |
be95a9c1 AM |
2908 | char *name; |
2909 | char delim; | |
2910 | char *end_name; | |
252b5132 | 2911 | |
041ff4dd NC |
2912 | /* Especial apologies for the random logic: |
2913 | this just grew, and could be parsed much more simply! | |
2914 | Dean in haste. */ | |
252b5132 RH |
2915 | name = input_line_pointer; |
2916 | delim = get_symbol_end (); | |
2917 | end_name = input_line_pointer; | |
0e389e77 | 2918 | *end_name = delim; |
409d19c4 | 2919 | |
0e389e77 | 2920 | if (name == end_name) |
409d19c4 AM |
2921 | { |
2922 | as_bad (_("expected symbol name")); | |
40a4d956 | 2923 | ignore_rest_of_line (); |
409d19c4 AM |
2924 | return; |
2925 | } | |
2926 | ||
252b5132 RH |
2927 | SKIP_WHITESPACE (); |
2928 | ||
2929 | if (*input_line_pointer != ',') | |
2930 | { | |
2931 | *end_name = 0; | |
0e389e77 | 2932 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2933 | *end_name = delim; |
2934 | ignore_rest_of_line (); | |
2935 | return; | |
2936 | } | |
2937 | ||
2938 | input_line_pointer++; | |
2939 | *end_name = 0; | |
2940 | ||
be95a9c1 | 2941 | assign_symbol (name, equiv); |
252b5132 | 2942 | *end_name = delim; |
31d20a21 AM |
2943 | |
2944 | demand_empty_rest_of_line (); | |
041ff4dd | 2945 | } |
252b5132 | 2946 | |
041ff4dd | 2947 | void |
39e6acbd | 2948 | s_space (int mult) |
252b5132 RH |
2949 | { |
2950 | expressionS exp; | |
2951 | expressionS val; | |
2952 | char *p = 0; | |
2953 | char *stop = NULL; | |
fb25138b | 2954 | char stopc = 0; |
252b5132 RH |
2955 | int bytes; |
2956 | ||
2957 | #ifdef md_flush_pending_output | |
2958 | md_flush_pending_output (); | |
2959 | #endif | |
2960 | ||
2961 | if (flag_mri) | |
2962 | stop = mri_comment_field (&stopc); | |
2963 | ||
2964 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
2965 | this is ds.b. */ | |
2966 | if (flag_m68k_mri && mult > 1) | |
2967 | { | |
2968 | if (now_seg == absolute_section) | |
2969 | { | |
2970 | abs_section_offset += abs_section_offset & 1; | |
2971 | if (line_label != NULL) | |
2972 | S_SET_VALUE (line_label, abs_section_offset); | |
2973 | } | |
2974 | else if (mri_common_symbol != NULL) | |
2975 | { | |
2976 | valueT val; | |
2977 | ||
2978 | val = S_GET_VALUE (mri_common_symbol); | |
2979 | if ((val & 1) != 0) | |
2980 | { | |
2981 | S_SET_VALUE (mri_common_symbol, val + 1); | |
2982 | if (line_label != NULL) | |
2983 | { | |
2b47531b ILT |
2984 | expressionS *symexp; |
2985 | ||
2986 | symexp = symbol_get_value_expression (line_label); | |
2987 | know (symexp->X_op == O_symbol); | |
2988 | know (symexp->X_add_symbol == mri_common_symbol); | |
2989 | symexp->X_add_number += 1; | |
252b5132 RH |
2990 | } |
2991 | } | |
2992 | } | |
2993 | else | |
2994 | { | |
2995 | do_align (1, (char *) NULL, 0, 0); | |
2996 | if (line_label != NULL) | |
2997 | { | |
2b47531b | 2998 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
2999 | S_SET_VALUE (line_label, frag_now_fix ()); |
3000 | } | |
3001 | } | |
3002 | } | |
3003 | ||
3004 | bytes = mult; | |
3005 | ||
3006 | expression (&exp); | |
3007 | ||
3008 | SKIP_WHITESPACE (); | |
3009 | if (*input_line_pointer == ',') | |
3010 | { | |
3011 | ++input_line_pointer; | |
3012 | expression (&val); | |
3013 | } | |
3014 | else | |
3015 | { | |
3016 | val.X_op = O_constant; | |
3017 | val.X_add_number = 0; | |
3018 | } | |
3019 | ||
3020 | if (val.X_op != O_constant | |
3021 | || val.X_add_number < - 0x80 | |
3022 | || val.X_add_number > 0xff | |
3023 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3024 | { | |
9497f5ac | 3025 | resolve_expression (&exp); |
252b5132 | 3026 | if (exp.X_op != O_constant) |
0e389e77 | 3027 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3028 | else |
3029 | { | |
3030 | offsetT i; | |
3031 | ||
3032 | if (mult == 0) | |
3033 | mult = 1; | |
3034 | bytes = mult * exp.X_add_number; | |
3035 | for (i = 0; i < exp.X_add_number; i++) | |
3036 | emit_expr (&val, mult); | |
3037 | } | |
3038 | } | |
3039 | else | |
3040 | { | |
9497f5ac NC |
3041 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3042 | resolve_expression (&exp); | |
3043 | ||
252b5132 RH |
3044 | if (exp.X_op == O_constant) |
3045 | { | |
3046 | long repeat; | |
3047 | ||
3048 | repeat = exp.X_add_number; | |
3049 | if (mult) | |
3050 | repeat *= mult; | |
3051 | bytes = repeat; | |
3052 | if (repeat <= 0) | |
3053 | { | |
2d150871 RO |
3054 | if (!flag_mri) |
3055 | as_warn (_(".space repeat count is zero, ignored")); | |
3056 | else if (repeat < 0) | |
252b5132 RH |
3057 | as_warn (_(".space repeat count is negative, ignored")); |
3058 | goto getout; | |
3059 | } | |
3060 | ||
3061 | /* If we are in the absolute section, just bump the offset. */ | |
3062 | if (now_seg == absolute_section) | |
3063 | { | |
3064 | abs_section_offset += repeat; | |
3065 | goto getout; | |
3066 | } | |
3067 | ||
3068 | /* If we are secretly in an MRI common section, then | |
3069 | creating space just increases the size of the common | |
3070 | symbol. */ | |
3071 | if (mri_common_symbol != NULL) | |
3072 | { | |
3073 | S_SET_VALUE (mri_common_symbol, | |
3074 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3075 | goto getout; | |
3076 | } | |
3077 | ||
3078 | if (!need_pass_2) | |
3079 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3080 | (offsetT) repeat, (char *) 0); | |
3081 | } | |
3082 | else | |
3083 | { | |
3084 | if (now_seg == absolute_section) | |
3085 | { | |
3086 | as_bad (_("space allocation too complex in absolute section")); | |
3087 | subseg_set (text_section, 0); | |
3088 | } | |
f0e652b4 | 3089 | |
252b5132 RH |
3090 | if (mri_common_symbol != NULL) |
3091 | { | |
3092 | as_bad (_("space allocation too complex in common section")); | |
3093 | mri_common_symbol = NULL; | |
3094 | } | |
f0e652b4 | 3095 | |
252b5132 RH |
3096 | if (!need_pass_2) |
3097 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3098 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3099 | } | |
3100 | ||
3101 | if (p) | |
3102 | *p = val.X_add_number; | |
3103 | } | |
3104 | ||
3105 | getout: | |
3106 | ||
3107 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3108 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3109 | or dcb.b. */ | |
3110 | if (flag_mri && (bytes & 1) != 0) | |
3111 | mri_pending_align = 1; | |
3112 | ||
3113 | demand_empty_rest_of_line (); | |
3114 | ||
3115 | if (flag_mri) | |
3116 | mri_comment_end (stop, stopc); | |
3117 | } | |
3118 | ||
3119 | /* This is like s_space, but the value is a floating point number with | |
3120 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3121 | friends. */ | |
3122 | ||
3123 | void | |
39e6acbd | 3124 | s_float_space (int float_type) |
252b5132 RH |
3125 | { |
3126 | offsetT count; | |
3127 | int flen; | |
3128 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3129 | char *stop = NULL; | |
fb25138b | 3130 | char stopc = 0; |
252b5132 RH |
3131 | |
3132 | if (flag_mri) | |
3133 | stop = mri_comment_field (&stopc); | |
3134 | ||
3135 | count = get_absolute_expression (); | |
3136 | ||
3137 | SKIP_WHITESPACE (); | |
3138 | if (*input_line_pointer != ',') | |
3139 | { | |
3140 | as_bad (_("missing value")); | |
3141 | ignore_rest_of_line (); | |
3142 | if (flag_mri) | |
3143 | mri_comment_end (stop, stopc); | |
3144 | return; | |
3145 | } | |
3146 | ||
3147 | ++input_line_pointer; | |
3148 | ||
3149 | SKIP_WHITESPACE (); | |
3150 | ||
3151 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3152 | * letter is legal. */ | |
3153 | if (input_line_pointer[0] == '0' | |
3882b010 | 3154 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3155 | input_line_pointer += 2; |
3156 | ||
3157 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3158 | with the exact digits specified. */ | |
3159 | if (input_line_pointer[0] == ':') | |
3160 | { | |
3161 | flen = hex_float (float_type, temp); | |
3162 | if (flen < 0) | |
3163 | { | |
3164 | ignore_rest_of_line (); | |
3165 | if (flag_mri) | |
3166 | mri_comment_end (stop, stopc); | |
3167 | return; | |
3168 | } | |
3169 | } | |
3170 | else | |
3171 | { | |
3172 | char *err; | |
3173 | ||
3174 | err = md_atof (float_type, temp, &flen); | |
3175 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3176 | know (flen > 0); | |
3177 | if (err) | |
3178 | { | |
0e389e77 | 3179 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3180 | ignore_rest_of_line (); |
3181 | if (flag_mri) | |
3182 | mri_comment_end (stop, stopc); | |
3183 | return; | |
3184 | } | |
3185 | } | |
3186 | ||
3187 | while (--count >= 0) | |
3188 | { | |
3189 | char *p; | |
3190 | ||
3191 | p = frag_more (flen); | |
3192 | memcpy (p, temp, (unsigned int) flen); | |
3193 | } | |
3194 | ||
3195 | demand_empty_rest_of_line (); | |
3196 | ||
3197 | if (flag_mri) | |
3198 | mri_comment_end (stop, stopc); | |
3199 | } | |
3200 | ||
3201 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3202 | ||
3203 | void | |
39e6acbd | 3204 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3205 | { |
3206 | char *stop = NULL; | |
fb25138b | 3207 | char stopc = 0; |
252b5132 RH |
3208 | |
3209 | if (flag_mri) | |
3210 | stop = mri_comment_field (&stopc); | |
3211 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3212 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3213 | /* The ELF backend needs to know that we are changing sections, so | |
3214 | that .previous works correctly. */ | |
f43abd2b | 3215 | if (IS_ELF) |
a2902af6 TS |
3216 | obj_elf_section_change_hook (); |
3217 | #endif | |
252b5132 RH |
3218 | subseg_set (absolute_section, 0); |
3219 | demand_empty_rest_of_line (); | |
3220 | if (flag_mri) | |
3221 | mri_comment_end (stop, stopc); | |
3222 | } | |
3223 | ||
3224 | void | |
39e6acbd | 3225 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3226 | { |
3227 | register int temp; | |
3228 | ||
3229 | temp = get_absolute_expression (); | |
3230 | subseg_set (text_section, (subsegT) temp); | |
3231 | demand_empty_rest_of_line (); | |
3232 | #ifdef OBJ_VMS | |
3233 | const_flag &= ~IN_DEFAULT_SECTION; | |
3234 | #endif | |
041ff4dd | 3235 | } |
06e77878 AO |
3236 | |
3237 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3238 | referenced directly, will cause y to become a weak symbol. */ | |
3239 | void | |
3240 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3241 | { | |
3242 | char *name; | |
3243 | char delim; | |
3244 | char *end_name; | |
3245 | symbolS *symbolP; | |
3246 | symbolS *symbolP2; | |
3247 | expressionS exp; | |
3248 | ||
3249 | name = input_line_pointer; | |
3250 | delim = get_symbol_end (); | |
3251 | end_name = input_line_pointer; | |
3252 | ||
3253 | if (name == end_name) | |
3254 | { | |
3255 | as_bad (_("expected symbol name")); | |
3256 | *end_name = delim; | |
3257 | ignore_rest_of_line (); | |
3258 | return; | |
3259 | } | |
3260 | ||
3261 | symbolP = symbol_find_or_make (name); | |
3262 | ||
b54788f8 AO |
3263 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3264 | { | |
89cdfe57 | 3265 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3266 | { |
3267 | as_bad (_("symbol `%s' is already defined"), name); | |
3268 | *end_name = delim; | |
3269 | ignore_rest_of_line (); | |
3270 | return; | |
3271 | } | |
89cdfe57 | 3272 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3273 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3274 | } |
3275 | ||
06e77878 AO |
3276 | *end_name = delim; |
3277 | ||
3278 | SKIP_WHITESPACE (); | |
3279 | ||
3280 | if (*input_line_pointer != ',') | |
3281 | { | |
3282 | *end_name = 0; | |
3283 | as_bad (_("expected comma after \"%s\""), name); | |
3284 | *end_name = delim; | |
3285 | ignore_rest_of_line (); | |
3286 | return; | |
3287 | } | |
3288 | ||
3289 | input_line_pointer++; | |
3290 | ||
3291 | SKIP_WHITESPACE (); | |
3292 | ||
3293 | name = input_line_pointer; | |
3294 | delim = get_symbol_end (); | |
3295 | end_name = input_line_pointer; | |
3296 | ||
3297 | if (name == end_name) | |
3298 | { | |
3299 | as_bad (_("expected symbol name")); | |
3300 | ignore_rest_of_line (); | |
3301 | return; | |
3302 | } | |
3303 | ||
3304 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3305 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3306 | { | |
3307 | symbolP2 = symbol_find_or_make (name); | |
3308 | S_SET_WEAKREFD (symbolP2); | |
3309 | } | |
3310 | else | |
3311 | { | |
3312 | symbolS *symp = symbolP2; | |
3313 | ||
3314 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3315 | { | |
3316 | expressionS *expP = symbol_get_value_expression (symp); | |
3317 | ||
3318 | assert (expP->X_op == O_symbol | |
3319 | && expP->X_add_number == 0); | |
3320 | symp = expP->X_add_symbol; | |
3321 | } | |
3322 | if (symp == symbolP) | |
3323 | { | |
3324 | char *loop; | |
3325 | ||
3326 | loop = concat (S_GET_NAME (symbolP), | |
3327 | " => ", S_GET_NAME (symbolP2), NULL); | |
3328 | ||
3329 | symp = symbolP2; | |
3330 | while (symp != symbolP) | |
3331 | { | |
3332 | char *old_loop = loop; | |
3333 | symp = symbol_get_value_expression (symp)->X_add_symbol; | |
3334 | loop = concat (loop, " => ", S_GET_NAME (symp), NULL); | |
3335 | free (old_loop); | |
3336 | } | |
3337 | ||
3338 | as_bad (_("%s: would close weakref loop: %s"), | |
3339 | S_GET_NAME (symbolP), loop); | |
3340 | ||
3341 | free (loop); | |
3342 | ||
3343 | *end_name = delim; | |
3344 | ignore_rest_of_line (); | |
3345 | return; | |
3346 | } | |
3347 | ||
3348 | /* Short-circuiting instead of just checking here might speed | |
3349 | things up a tiny little bit, but loop error messages would | |
3350 | miss intermediate links. */ | |
3351 | /* symbolP2 = symp; */ | |
3352 | } | |
3353 | ||
3354 | *end_name = delim; | |
3355 | ||
3356 | memset (&exp, 0, sizeof (exp)); | |
3357 | exp.X_op = O_symbol; | |
3358 | exp.X_add_symbol = symbolP2; | |
3359 | ||
3360 | S_SET_SEGMENT (symbolP, undefined_section); | |
3361 | symbol_set_value_expression (symbolP, &exp); | |
3362 | symbol_set_frag (symbolP, &zero_address_frag); | |
3363 | S_SET_WEAKREFR (symbolP); | |
3364 | ||
3365 | demand_empty_rest_of_line (); | |
3366 | } | |
252b5132 | 3367 | \f |
c95b35a9 NS |
3368 | |
3369 | /* Verify that we are at the end of a line. If not, issue an error and | |
3370 | skip to EOL. */ | |
3371 | ||
041ff4dd | 3372 | void |
39e6acbd | 3373 | demand_empty_rest_of_line (void) |
252b5132 RH |
3374 | { |
3375 | SKIP_WHITESPACE (); | |
3376 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3377 | input_line_pointer++; |
252b5132 | 3378 | else |
252b5132 | 3379 | { |
3882b010 | 3380 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3381 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3382 | *input_line_pointer); |
252b5132 | 3383 | else |
c95b35a9 | 3384 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3385 | *input_line_pointer); |
c95b35a9 | 3386 | ignore_rest_of_line (); |
252b5132 | 3387 | } |
c95b35a9 NS |
3388 | |
3389 | /* Return pointing just after end-of-line. */ | |
3390 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3391 | } | |
3392 | ||
3393 | /* Silently advance to the end of line. Use this after already having | |
3394 | issued an error about something bad. */ | |
3395 | ||
3396 | void | |
3397 | ignore_rest_of_line (void) | |
3398 | { | |
3399 | while (input_line_pointer < buffer_limit | |
3400 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3401 | input_line_pointer++; | |
f0e652b4 | 3402 | |
041ff4dd NC |
3403 | input_line_pointer++; |
3404 | ||
3405 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3406 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3407 | } | |
3408 | ||
be95a9c1 AM |
3409 | /* Sets frag for given symbol to zero_address_frag, except when the |
3410 | symbol frag is already set to a dummy listing frag. */ | |
3411 | ||
3412 | static void | |
3413 | set_zero_frag (symbolS *symbolP) | |
3414 | { | |
3415 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3416 | symbol_set_frag (symbolP, &zero_address_frag); | |
3417 | } | |
3418 | ||
041ff4dd | 3419 | /* In: Pointer to a symbol. |
d6415f6c | 3420 | Input_line_pointer->expression. |
f0e652b4 | 3421 | |
041ff4dd | 3422 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3423 | Tried to set symbol to value of expression. |
3424 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3425 | |
252b5132 | 3426 | void |
39e6acbd | 3427 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3428 | { |
3429 | expressionS exp; | |
be95a9c1 | 3430 | segT seg; |
252b5132 | 3431 | |
041ff4dd | 3432 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3433 | |
9497f5ac NC |
3434 | if (!S_IS_FORWARD_REF (symbolP)) |
3435 | (void) expression (&exp); | |
3436 | else | |
3437 | (void) deferred_expression (&exp); | |
252b5132 RH |
3438 | |
3439 | if (exp.X_op == O_illegal) | |
0e389e77 | 3440 | as_bad (_("illegal expression")); |
252b5132 | 3441 | else if (exp.X_op == O_absent) |
0e389e77 | 3442 | as_bad (_("missing expression")); |
252b5132 RH |
3443 | else if (exp.X_op == O_big) |
3444 | { | |
3445 | if (exp.X_add_number > 0) | |
0e389e77 | 3446 | as_bad (_("bignum invalid")); |
252b5132 | 3447 | else |
0e389e77 | 3448 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3449 | } |
3450 | else if (exp.X_op == O_subtract | |
9497f5ac | 3451 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3452 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3453 | && (symbol_get_frag (exp.X_add_symbol) |
3454 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3455 | { |
3456 | exp.X_op = O_constant; | |
3457 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3458 | - S_GET_VALUE (exp.X_op_symbol)); | |
3459 | } | |
3460 | ||
be95a9c1 AM |
3461 | if (symbol_section_p (symbolP)) |
3462 | { | |
3463 | as_bad ("attempt to set value of section symbol"); | |
3464 | return; | |
3465 | } | |
be95a9c1 | 3466 | |
252b5132 RH |
3467 | switch (exp.X_op) |
3468 | { | |
3469 | case O_illegal: | |
3470 | case O_absent: | |
3471 | case O_big: | |
3472 | exp.X_add_number = 0; | |
3473 | /* Fall through. */ | |
3474 | case O_constant: | |
3475 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3476 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3477 | set_zero_frag (symbolP); |
252b5132 RH |
3478 | break; |
3479 | ||
3480 | case O_register: | |
3481 | S_SET_SEGMENT (symbolP, reg_section); | |
3482 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3483 | set_zero_frag (symbolP); |
db557034 | 3484 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3485 | break; |
3486 | ||
3487 | case O_symbol: | |
be95a9c1 AM |
3488 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3489 | /* For x=undef+const, create an expression symbol. | |
3490 | For x=x+const, just update x except when x is an undefined symbol | |
3491 | For x=defined+const, evaluate x. */ | |
3492 | if (symbolP == exp.X_add_symbol | |
3493 | && (seg != undefined_section | |
3494 | || !symbol_constant_p (symbolP))) | |
3495 | { | |
3496 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3497 | break; | |
3498 | } | |
9497f5ac | 3499 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3500 | { |
3501 | symbolS *s = exp.X_add_symbol; | |
3502 | ||
60938e80 L |
3503 | if (S_IS_COMMON (s)) |
3504 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3505 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3506 | ||
be95a9c1 AM |
3507 | S_SET_SEGMENT (symbolP, seg); |
3508 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3509 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3510 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3511 | break; |
252b5132 | 3512 | } |
66bd02d3 AM |
3513 | S_SET_SEGMENT (symbolP, undefined_section); |
3514 | symbol_set_value_expression (symbolP, &exp); | |
3515 | set_zero_frag (symbolP); | |
3516 | break; | |
252b5132 RH |
3517 | |
3518 | default: | |
aba4aa7d AM |
3519 | /* The value is some complex expression. */ |
3520 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3521 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3522 | set_zero_frag (symbolP); |
252b5132 RH |
3523 | break; |
3524 | } | |
3525 | } | |
3526 | \f | |
d6415f6c | 3527 | /* cons() |
f0e652b4 | 3528 | |
041ff4dd NC |
3529 | CONStruct more frag of .bytes, or .words etc. |
3530 | Should need_pass_2 be 1 then emit no frag(s). | |
3531 | This understands EXPRESSIONS. | |
f0e652b4 | 3532 | |
041ff4dd | 3533 | Bug (?) |
f0e652b4 | 3534 | |
041ff4dd NC |
3535 | This has a split personality. We use expression() to read the |
3536 | value. We can detect if the value won't fit in a byte or word. | |
3537 | But we can't detect if expression() discarded significant digits | |
3538 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3539 | |
3540 | /* Select a parser for cons expressions. */ | |
3541 | ||
3542 | /* Some targets need to parse the expression in various fancy ways. | |
3543 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3544 | (for example, the HPPA does this). Otherwise, you can define | |
3545 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3546 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3547 | are defined, which is the normal case, then only simple expressions | |
3548 | are permitted. */ | |
3549 | ||
abd63a32 | 3550 | #ifdef TC_M68K |
252b5132 | 3551 | static void |
39e6acbd | 3552 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3553 | #endif |
252b5132 RH |
3554 | |
3555 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3556 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3557 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3558 | static void |
39e6acbd | 3559 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3560 | #endif |
3561 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3562 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3563 | static void | |
39e6acbd | 3564 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3565 | #endif |
3566 | ||
3567 | /* If we haven't gotten one yet, just call expression. */ | |
3568 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3569 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3570 | #endif | |
3571 | #endif | |
3572 | ||
cdfbf930 | 3573 | void |
b41b1f95 L |
3574 | do_parse_cons_expression (expressionS *exp, |
3575 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3576 | { |
3577 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3578 | } | |
3579 | ||
3580 | ||
041ff4dd NC |
3581 | /* Worker to do .byte etc statements. |
3582 | Clobbers input_line_pointer and checks end-of-line. */ | |
3583 | ||
3584 | static void | |
39e6acbd KH |
3585 | cons_worker (register int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
3586 | int rva) | |
252b5132 RH |
3587 | { |
3588 | int c; | |
3589 | expressionS exp; | |
3590 | char *stop = NULL; | |
fb25138b | 3591 | char stopc = 0; |
252b5132 RH |
3592 | |
3593 | #ifdef md_flush_pending_output | |
3594 | md_flush_pending_output (); | |
3595 | #endif | |
3596 | ||
3597 | if (flag_mri) | |
3598 | stop = mri_comment_field (&stopc); | |
3599 | ||
3600 | if (is_it_end_of_statement ()) | |
3601 | { | |
3602 | demand_empty_rest_of_line (); | |
3603 | if (flag_mri) | |
3604 | mri_comment_end (stop, stopc); | |
3605 | return; | |
3606 | } | |
3607 | ||
cc1bc22a AM |
3608 | #ifdef TC_ADDRESS_BYTES |
3609 | if (nbytes == 0) | |
3610 | nbytes = TC_ADDRESS_BYTES (); | |
3611 | #endif | |
3612 | ||
252b5132 RH |
3613 | #ifdef md_cons_align |
3614 | md_cons_align (nbytes); | |
3615 | #endif | |
3616 | ||
3617 | c = 0; | |
3618 | do | |
3619 | { | |
abd63a32 | 3620 | #ifdef TC_M68K |
252b5132 RH |
3621 | if (flag_m68k_mri) |
3622 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3623 | else | |
abd63a32 | 3624 | #endif |
252b5132 RH |
3625 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
3626 | ||
3627 | if (rva) | |
3628 | { | |
3629 | if (exp.X_op == O_symbol) | |
3630 | exp.X_op = O_symbol_rva; | |
3631 | else | |
3632 | as_fatal (_("rva without symbol")); | |
3633 | } | |
3634 | emit_expr (&exp, (unsigned int) nbytes); | |
3635 | ++c; | |
3636 | } | |
3637 | while (*input_line_pointer++ == ','); | |
3638 | ||
3639 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3640 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3641 | or dcb.b. */ | |
3642 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3643 | mri_pending_align = 1; | |
3644 | ||
041ff4dd | 3645 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3646 | |
3647 | demand_empty_rest_of_line (); | |
3648 | ||
3649 | if (flag_mri) | |
3650 | mri_comment_end (stop, stopc); | |
3651 | } | |
3652 | ||
252b5132 | 3653 | void |
39e6acbd | 3654 | cons (int size) |
252b5132 RH |
3655 | { |
3656 | cons_worker (size, 0); | |
3657 | } | |
3658 | ||
041ff4dd | 3659 | void |
39e6acbd | 3660 | s_rva (int size) |
252b5132 RH |
3661 | { |
3662 | cons_worker (size, 1); | |
3663 | } | |
3664 | ||
05e9452c AM |
3665 | /* .reloc offset, reloc_name, symbol+addend. */ |
3666 | ||
3667 | void | |
3668 | s_reloc (int ignore ATTRIBUTE_UNUSED) | |
3669 | { | |
3670 | char *stop = NULL; | |
3671 | char stopc = 0; | |
3672 | expressionS exp; | |
3673 | char *r_name; | |
3674 | int c; | |
3675 | struct reloc_list *reloc; | |
3676 | ||
3677 | reloc = xmalloc (sizeof (*reloc)); | |
3678 | ||
3679 | if (flag_mri) | |
3680 | stop = mri_comment_field (&stopc); | |
3681 | ||
3682 | expression (&exp); | |
3683 | switch (exp.X_op) | |
3684 | { | |
3685 | case O_illegal: | |
3686 | case O_absent: | |
3687 | case O_big: | |
3688 | case O_register: | |
3689 | as_bad (_("missing or bad offset expression")); | |
3690 | goto err_out; | |
3691 | case O_constant: | |
3692 | exp.X_add_symbol = section_symbol (now_seg); | |
3693 | exp.X_op = O_symbol; | |
3694 | /* Fall thru */ | |
3695 | case O_symbol: | |
3696 | if (exp.X_add_number == 0) | |
3697 | { | |
3698 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
3699 | break; | |
3700 | } | |
3701 | /* Fall thru */ | |
3702 | default: | |
3703 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
3704 | break; | |
3705 | } | |
3706 | ||
3707 | SKIP_WHITESPACE (); | |
3708 | if (*input_line_pointer != ',') | |
3709 | { | |
3710 | as_bad (_("missing reloc type")); | |
3711 | goto err_out; | |
3712 | } | |
3713 | ||
3714 | ++input_line_pointer; | |
3715 | SKIP_WHITESPACE (); | |
3716 | r_name = input_line_pointer; | |
3717 | c = get_symbol_end (); | |
3718 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
3719 | *input_line_pointer = c; | |
3720 | if (reloc->u.a.howto == NULL) | |
3721 | { | |
3722 | as_bad (_("unrecognized reloc type")); | |
3723 | goto err_out; | |
3724 | } | |
3725 | ||
3726 | exp.X_op = O_absent; | |
3727 | SKIP_WHITESPACE (); | |
3728 | if (*input_line_pointer == ',') | |
3729 | { | |
3730 | ++input_line_pointer; | |
3731 | expression_and_evaluate (&exp); | |
3732 | } | |
3733 | switch (exp.X_op) | |
3734 | { | |
3735 | case O_illegal: | |
3736 | case O_big: | |
3737 | case O_register: | |
3738 | as_bad (_("bad reloc expression")); | |
3739 | err_out: | |
3740 | ignore_rest_of_line (); | |
3741 | free (reloc); | |
3742 | if (flag_mri) | |
3743 | mri_comment_end (stop, stopc); | |
3744 | return; | |
3745 | case O_absent: | |
3746 | reloc->u.a.sym = NULL; | |
3747 | reloc->u.a.addend = 0; | |
3748 | break; | |
3749 | case O_constant: | |
3750 | reloc->u.a.sym = NULL; | |
3751 | reloc->u.a.addend = exp.X_add_number; | |
3752 | break; | |
3753 | case O_symbol: | |
3754 | reloc->u.a.sym = exp.X_add_symbol; | |
3755 | reloc->u.a.addend = exp.X_add_number; | |
3756 | break; | |
3757 | default: | |
3758 | reloc->u.a.sym = make_expr_symbol (&exp); | |
3759 | reloc->u.a.addend = 0; | |
3760 | break; | |
3761 | } | |
3762 | ||
3763 | as_where (&reloc->file, &reloc->line); | |
3764 | reloc->next = reloc_list; | |
3765 | reloc_list = reloc; | |
3766 | ||
3767 | demand_empty_rest_of_line (); | |
3768 | if (flag_mri) | |
3769 | mri_comment_end (stop, stopc); | |
3770 | } | |
3771 | ||
252b5132 RH |
3772 | /* Put the contents of expression EXP into the object file using |
3773 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
3774 | ||
3775 | void | |
39e6acbd | 3776 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
3777 | { |
3778 | operatorT op; | |
3779 | register char *p; | |
3780 | valueT extra_digit = 0; | |
3781 | ||
3782 | /* Don't do anything if we are going to make another pass. */ | |
3783 | if (need_pass_2) | |
3784 | return; | |
3785 | ||
ed7d5d1a AM |
3786 | dot_value = frag_now_fix (); |
3787 | ||
252b5132 RH |
3788 | #ifndef NO_LISTING |
3789 | #ifdef OBJ_ELF | |
3790 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
3791 | appear as a four byte positive constant in the .line section, | |
3792 | followed by a 2 byte 0xffff. Look for that case here. */ | |
3793 | { | |
3794 | static int dwarf_line = -1; | |
3795 | ||
3796 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
3797 | dwarf_line = -1; | |
3798 | else if (dwarf_line >= 0 | |
3799 | && nbytes == 2 | |
3800 | && exp->X_op == O_constant | |
3801 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
3802 | listing_source_line ((unsigned int) dwarf_line); | |
3803 | else if (nbytes == 4 | |
3804 | && exp->X_op == O_constant | |
3805 | && exp->X_add_number >= 0) | |
3806 | dwarf_line = exp->X_add_number; | |
3807 | else | |
3808 | dwarf_line = -1; | |
3809 | } | |
3810 | ||
3811 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
3812 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
3813 | AT_sibling (0x12) followed by a four byte address of the sibling | |
3814 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
3815 | file. We look for that case here. */ | |
3816 | { | |
3817 | static int dwarf_file = 0; | |
3818 | ||
3819 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
3820 | dwarf_file = 0; | |
3821 | else if (dwarf_file == 0 | |
3822 | && nbytes == 2 | |
3823 | && exp->X_op == O_constant | |
3824 | && exp->X_add_number == 0x11) | |
3825 | dwarf_file = 1; | |
3826 | else if (dwarf_file == 1 | |
3827 | && nbytes == 2 | |
3828 | && exp->X_op == O_constant | |
3829 | && exp->X_add_number == 0x12) | |
3830 | dwarf_file = 2; | |
3831 | else if (dwarf_file == 2 | |
3832 | && nbytes == 4) | |
3833 | dwarf_file = 3; | |
3834 | else if (dwarf_file == 3 | |
3835 | && nbytes == 2 | |
3836 | && exp->X_op == O_constant | |
3837 | && exp->X_add_number == 0x38) | |
3838 | dwarf_file = 4; | |
3839 | else | |
3840 | dwarf_file = 0; | |
3841 | ||
3842 | /* The variable dwarf_file_string tells stringer that the string | |
3843 | may be the name of the source file. */ | |
3844 | if (dwarf_file == 4) | |
3845 | dwarf_file_string = 1; | |
3846 | else | |
3847 | dwarf_file_string = 0; | |
3848 | } | |
3849 | #endif | |
3850 | #endif | |
3851 | ||
3852 | if (check_eh_frame (exp, &nbytes)) | |
3853 | return; | |
3854 | ||
3855 | op = exp->X_op; | |
3856 | ||
3857 | /* Allow `.word 0' in the absolute section. */ | |
3858 | if (now_seg == absolute_section) | |
3859 | { | |
3860 | if (op != O_constant || exp->X_add_number != 0) | |
3861 | as_bad (_("attempt to store value in absolute section")); | |
3862 | abs_section_offset += nbytes; | |
3863 | return; | |
3864 | } | |
3865 | ||
3866 | /* Handle a negative bignum. */ | |
3867 | if (op == O_uminus | |
3868 | && exp->X_add_number == 0 | |
2b47531b ILT |
3869 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
3870 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
3871 | { |
3872 | int i; | |
3873 | unsigned long carry; | |
3874 | ||
2b47531b | 3875 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
3876 | |
3877 | /* Negate the bignum: one's complement each digit and add 1. */ | |
3878 | carry = 1; | |
3879 | for (i = 0; i < exp->X_add_number; i++) | |
3880 | { | |
3881 | unsigned long next; | |
3882 | ||
041ff4dd | 3883 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
3884 | & LITTLENUM_MASK) |
3885 | + carry); | |
3886 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3887 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3888 | } | |
3889 | ||
3890 | /* We can ignore any carry out, because it will be handled by | |
3891 | extra_digit if it is needed. */ | |
3892 | ||
3893 | extra_digit = (valueT) -1; | |
3894 | op = O_big; | |
3895 | } | |
3896 | ||
3897 | if (op == O_absent || op == O_illegal) | |
3898 | { | |
3899 | as_warn (_("zero assumed for missing expression")); | |
3900 | exp->X_add_number = 0; | |
3901 | op = O_constant; | |
3902 | } | |
3903 | else if (op == O_big && exp->X_add_number <= 0) | |
3904 | { | |
0e389e77 | 3905 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3906 | exp->X_add_number = 0; |
3907 | op = O_constant; | |
3908 | } | |
3909 | else if (op == O_register) | |
3910 | { | |
3911 | as_warn (_("register value used as expression")); | |
3912 | op = O_constant; | |
3913 | } | |
3914 | ||
3915 | p = frag_more ((int) nbytes); | |
3916 | ||
3917 | #ifndef WORKING_DOT_WORD | |
3918 | /* If we have the difference of two symbols in a word, save it on | |
3919 | the broken_words list. See the code in write.c. */ | |
3920 | if (op == O_subtract && nbytes == 2) | |
3921 | { | |
3922 | struct broken_word *x; | |
3923 | ||
3924 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3925 | x->next_broken_word = broken_words; | |
3926 | broken_words = x; | |
3927 | x->seg = now_seg; | |
3928 | x->subseg = now_subseg; | |
3929 | x->frag = frag_now; | |
3930 | x->word_goes_here = p; | |
3931 | x->dispfrag = 0; | |
3932 | x->add = exp->X_add_symbol; | |
3933 | x->sub = exp->X_op_symbol; | |
3934 | x->addnum = exp->X_add_number; | |
3935 | x->added = 0; | |
dc59a897 | 3936 | x->use_jump = 0; |
252b5132 RH |
3937 | new_broken_words++; |
3938 | return; | |
3939 | } | |
3940 | #endif | |
3941 | ||
3942 | /* If we have an integer, but the number of bytes is too large to | |
3943 | pass to md_number_to_chars, handle it as a bignum. */ | |
3944 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3945 | { | |
e5604d79 RS |
3946 | extra_digit = exp->X_unsigned ? 0 : -1; |
3947 | convert_to_bignum (exp); | |
3948 | op = O_big; | |
252b5132 RH |
3949 | } |
3950 | ||
3951 | if (op == O_constant) | |
3952 | { | |
3953 | register valueT get; | |
3954 | register valueT use; | |
3955 | register valueT mask; | |
3956 | valueT hibit; | |
3957 | register valueT unmask; | |
3958 | ||
3959 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 3960 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
3961 | if (nbytes >= sizeof (valueT)) |
3962 | { | |
3963 | mask = 0; | |
3964 | if (nbytes > sizeof (valueT)) | |
3965 | hibit = 0; | |
3966 | else | |
3967 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3968 | } | |
3969 | else | |
3970 | { | |
041ff4dd | 3971 | /* Don't store these bits. */ |
252b5132 RH |
3972 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
3973 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3974 | } | |
3975 | ||
041ff4dd | 3976 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
3977 | |
3978 | #ifdef NEVER | |
3979 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 3980 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
3981 | #endif |
3982 | ||
3983 | get = exp->X_add_number; | |
3984 | use = get & unmask; | |
3985 | if ((get & mask) != 0 | |
3986 | && ((get & mask) != mask | |
3987 | || (get & hibit) == 0)) | |
041ff4dd | 3988 | { /* Leading bits contain both 0s & 1s. */ |
0e389e77 | 3989 | as_warn (_("value 0x%lx truncated to 0x%lx"), |
252b5132 RH |
3990 | (unsigned long) get, (unsigned long) use); |
3991 | } | |
041ff4dd | 3992 | /* Put bytes in right order. */ |
252b5132 RH |
3993 | md_number_to_chars (p, use, (int) nbytes); |
3994 | } | |
3995 | else if (op == O_big) | |
3996 | { | |
3997 | unsigned int size; | |
3998 | LITTLENUM_TYPE *nums; | |
3999 | ||
4000 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4001 | ||
4002 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
4003 | if (nbytes < size) | |
4004 | { | |
0e389e77 | 4005 | as_warn (_("bignum truncated to %d bytes"), nbytes); |
252b5132 RH |
4006 | size = nbytes; |
4007 | } | |
4008 | ||
4009 | if (target_big_endian) | |
4010 | { | |
4011 | while (nbytes > size) | |
4012 | { | |
4013 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4014 | nbytes -= CHARS_PER_LITTLENUM; | |
4015 | p += CHARS_PER_LITTLENUM; | |
4016 | } | |
4017 | ||
4018 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4019 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4020 | { |
4021 | --nums; | |
4022 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4023 | size -= CHARS_PER_LITTLENUM; | |
4024 | p += CHARS_PER_LITTLENUM; | |
4025 | } | |
4026 | } | |
4027 | else | |
4028 | { | |
4029 | nums = generic_bignum; | |
ceac3f62 | 4030 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4031 | { |
4032 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4033 | ++nums; | |
4034 | size -= CHARS_PER_LITTLENUM; | |
4035 | p += CHARS_PER_LITTLENUM; | |
4036 | nbytes -= CHARS_PER_LITTLENUM; | |
4037 | } | |
4038 | ||
ceac3f62 | 4039 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4040 | { |
4041 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4042 | nbytes -= CHARS_PER_LITTLENUM; | |
4043 | p += CHARS_PER_LITTLENUM; | |
4044 | } | |
4045 | } | |
4046 | } | |
4047 | else | |
4048 | { | |
4049 | memset (p, 0, nbytes); | |
4050 | ||
7be1c489 | 4051 | /* Now we need to generate a fixS to record the symbol value. */ |
252b5132 | 4052 | |
252b5132 RH |
4053 | #ifdef TC_CONS_FIX_NEW |
4054 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
4055 | #else | |
4056 | { | |
4057 | bfd_reloc_code_real_type r; | |
4058 | ||
4059 | switch (nbytes) | |
4060 | { | |
4061 | case 1: | |
4062 | r = BFD_RELOC_8; | |
4063 | break; | |
4064 | case 2: | |
4065 | r = BFD_RELOC_16; | |
4066 | break; | |
4067 | case 4: | |
4068 | r = BFD_RELOC_32; | |
4069 | break; | |
4070 | case 8: | |
4071 | r = BFD_RELOC_64; | |
4072 | break; | |
4073 | default: | |
4074 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
4075 | r = BFD_RELOC_32; | |
4076 | break; | |
4077 | } | |
4078 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, | |
4079 | 0, r); | |
4080 | } | |
4081 | #endif | |
252b5132 RH |
4082 | } |
4083 | } | |
4084 | \f | |
4085 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
4086 | ||
4087 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
4088 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
4089 | then pack them all together. We do a little better in that we allow | |
4090 | them in words, longs, etc. and we'll pack them in target byte order | |
4091 | for you. | |
4092 | ||
47eebc20 | 4093 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
4094 | entirely fit, put it in the next unit. Overflowing the bitfield is |
4095 | explicitly *not* even a warning. The bitwidth should be considered | |
4096 | a "mask". | |
4097 | ||
4098 | To use this function the tc-XXX.h file should define | |
4099 | BITFIELD_CONS_EXPRESSIONS. */ | |
4100 | ||
041ff4dd | 4101 | static void |
252b5132 RH |
4102 | parse_bitfield_cons (exp, nbytes) |
4103 | expressionS *exp; | |
4104 | unsigned int nbytes; | |
4105 | { | |
4106 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
4107 | char *hold = input_line_pointer; | |
4108 | ||
4109 | (void) expression (exp); | |
4110 | ||
4111 | if (*input_line_pointer == ':') | |
041ff4dd NC |
4112 | { |
4113 | /* Bitfields. */ | |
252b5132 RH |
4114 | long value = 0; |
4115 | ||
4116 | for (;;) | |
4117 | { | |
4118 | unsigned long width; | |
4119 | ||
4120 | if (*input_line_pointer != ':') | |
4121 | { | |
4122 | input_line_pointer = hold; | |
4123 | break; | |
041ff4dd | 4124 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
4125 | |
4126 | /* In the general case, we can't allow | |
4127 | full expressions with symbol | |
4128 | differences and such. The relocation | |
4129 | entries for symbols not defined in this | |
4130 | assembly would require arbitrary field | |
4131 | widths, positions, and masks which most | |
4132 | of our current object formats don't | |
4133 | support. | |
4134 | ||
4135 | In the specific case where a symbol | |
4136 | *is* defined in this assembly, we | |
4137 | *could* build fixups and track it, but | |
4138 | this could lead to confusion for the | |
4139 | backends. I'm lazy. I'll take any | |
4140 | SEG_ABSOLUTE. I think that means that | |
4141 | you can use a previous .set or | |
041ff4dd | 4142 | .equ type symbol. xoxorich. */ |
252b5132 RH |
4143 | |
4144 | if (exp->X_op == O_absent) | |
4145 | { | |
4146 | as_warn (_("using a bit field width of zero")); | |
4147 | exp->X_add_number = 0; | |
4148 | exp->X_op = O_constant; | |
041ff4dd | 4149 | } /* Implied zero width bitfield. */ |
252b5132 RH |
4150 | |
4151 | if (exp->X_op != O_constant) | |
4152 | { | |
4153 | *input_line_pointer = '\0'; | |
4154 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
4155 | *input_line_pointer = ':'; | |
4156 | demand_empty_rest_of_line (); | |
4157 | return; | |
041ff4dd | 4158 | } /* Too complex. */ |
252b5132 RH |
4159 | |
4160 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
4161 | { | |
4162 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
4163 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
4164 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 4165 | } /* Too big. */ |
252b5132 RH |
4166 | |
4167 | if (width > bits_available) | |
4168 | { | |
4169 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
4170 | input_line_pointer = hold; | |
4171 | exp->X_add_number = value; | |
4172 | break; | |
041ff4dd | 4173 | } /* Won't fit. */ |
252b5132 | 4174 | |
ef99799a KH |
4175 | /* Skip ':'. */ |
4176 | hold = ++input_line_pointer; | |
252b5132 RH |
4177 | |
4178 | (void) expression (exp); | |
4179 | if (exp->X_op != O_constant) | |
4180 | { | |
4181 | char cache = *input_line_pointer; | |
4182 | ||
4183 | *input_line_pointer = '\0'; | |
4184 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
4185 | *input_line_pointer = cache; | |
4186 | demand_empty_rest_of_line (); | |
4187 | return; | |
041ff4dd | 4188 | } /* Too complex. */ |
252b5132 RH |
4189 | |
4190 | value |= ((~(-1 << width) & exp->X_add_number) | |
4191 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
4192 | ||
4193 | if ((bits_available -= width) == 0 | |
4194 | || is_it_end_of_statement () | |
4195 | || *input_line_pointer != ',') | |
4196 | { | |
4197 | break; | |
041ff4dd | 4198 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4199 | |
4200 | hold = ++input_line_pointer; | |
4201 | (void) expression (exp); | |
041ff4dd | 4202 | } |
252b5132 RH |
4203 | |
4204 | exp->X_add_number = value; | |
4205 | exp->X_op = O_constant; | |
4206 | exp->X_unsigned = 1; | |
041ff4dd NC |
4207 | } |
4208 | } | |
252b5132 RH |
4209 | |
4210 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4211 | \f | |
4212 | /* Handle an MRI style string expression. */ | |
4213 | ||
abd63a32 | 4214 | #ifdef TC_M68K |
252b5132 RH |
4215 | static void |
4216 | parse_mri_cons (exp, nbytes) | |
4217 | expressionS *exp; | |
4218 | unsigned int nbytes; | |
4219 | { | |
4220 | if (*input_line_pointer != '\'' | |
4221 | && (input_line_pointer[1] != '\'' | |
4222 | || (*input_line_pointer != 'A' | |
4223 | && *input_line_pointer != 'E'))) | |
4224 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
4225 | else | |
4226 | { | |
4227 | unsigned int scan; | |
4228 | unsigned int result = 0; | |
4229 | ||
4230 | /* An MRI style string. Cut into as many bytes as will fit into | |
4231 | a nbyte chunk, left justify if necessary, and separate with | |
4232 | commas so we can try again later. */ | |
4233 | if (*input_line_pointer == 'A') | |
4234 | ++input_line_pointer; | |
4235 | else if (*input_line_pointer == 'E') | |
4236 | { | |
4237 | as_bad (_("EBCDIC constants are not supported")); | |
4238 | ++input_line_pointer; | |
4239 | } | |
4240 | ||
4241 | input_line_pointer++; | |
4242 | for (scan = 0; scan < nbytes; scan++) | |
4243 | { | |
4244 | if (*input_line_pointer == '\'') | |
4245 | { | |
4246 | if (input_line_pointer[1] == '\'') | |
4247 | { | |
4248 | input_line_pointer++; | |
4249 | } | |
4250 | else | |
4251 | break; | |
4252 | } | |
4253 | result = (result << 8) | (*input_line_pointer++); | |
4254 | } | |
4255 | ||
041ff4dd | 4256 | /* Left justify. */ |
252b5132 RH |
4257 | while (scan < nbytes) |
4258 | { | |
4259 | result <<= 8; | |
4260 | scan++; | |
4261 | } | |
f0e652b4 | 4262 | |
041ff4dd | 4263 | /* Create correct expression. */ |
252b5132 RH |
4264 | exp->X_op = O_constant; |
4265 | exp->X_add_number = result; | |
f0e652b4 | 4266 | |
041ff4dd | 4267 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4268 | if (input_line_pointer[0] != '\'' || |
4269 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4270 | { | |
4271 | input_line_pointer -= 2; | |
4272 | input_line_pointer[0] = ','; | |
4273 | input_line_pointer[1] = '\''; | |
4274 | } | |
4275 | else | |
4276 | input_line_pointer++; | |
4277 | } | |
4278 | } | |
abd63a32 | 4279 | #endif /* TC_M68K */ |
252b5132 RH |
4280 | \f |
4281 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4282 | ||
4283 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4284 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4285 | object file COUNT times. | |
4286 | ||
4287 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4288 | ||
4289 | static void | |
4290 | parse_repeat_cons (exp, nbytes) | |
4291 | expressionS *exp; | |
4292 | unsigned int nbytes; | |
4293 | { | |
4294 | expressionS count; | |
4295 | register int i; | |
4296 | ||
4297 | expression (exp); | |
4298 | ||
4299 | if (*input_line_pointer != ':') | |
4300 | { | |
4301 | /* No repeat count. */ | |
4302 | return; | |
4303 | } | |
4304 | ||
4305 | ++input_line_pointer; | |
4306 | expression (&count); | |
4307 | if (count.X_op != O_constant | |
4308 | || count.X_add_number <= 0) | |
4309 | { | |
0e389e77 | 4310 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4311 | return; |
4312 | } | |
4313 | ||
4314 | /* The cons function is going to output this expression once. So we | |
4315 | output it count - 1 times. */ | |
4316 | for (i = count.X_add_number - 1; i > 0; i--) | |
4317 | emit_expr (exp, nbytes); | |
4318 | } | |
4319 | ||
4320 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4321 | \f | |
4322 | /* Parse a floating point number represented as a hex constant. This | |
4323 | permits users to specify the exact bits they want in the floating | |
4324 | point number. */ | |
4325 | ||
4326 | static int | |
39e6acbd | 4327 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4328 | { |
4329 | int length; | |
4330 | int i; | |
4331 | ||
4332 | switch (float_type) | |
4333 | { | |
4334 | case 'f': | |
4335 | case 'F': | |
4336 | case 's': | |
4337 | case 'S': | |
4338 | length = 4; | |
4339 | break; | |
4340 | ||
4341 | case 'd': | |
4342 | case 'D': | |
4343 | case 'r': | |
4344 | case 'R': | |
4345 | length = 8; | |
4346 | break; | |
4347 | ||
4348 | case 'x': | |
4349 | case 'X': | |
4350 | length = 12; | |
4351 | break; | |
4352 | ||
4353 | case 'p': | |
4354 | case 'P': | |
4355 | length = 12; | |
4356 | break; | |
4357 | ||
4358 | default: | |
0e389e77 | 4359 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4360 | return -1; |
4361 | } | |
4362 | ||
4363 | /* It would be nice if we could go through expression to parse the | |
4364 | hex constant, but if we get a bignum it's a pain to sort it into | |
4365 | the buffer correctly. */ | |
4366 | i = 0; | |
4367 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4368 | { | |
4369 | int d; | |
4370 | ||
4371 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4372 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4373 | if (*input_line_pointer == '_') |
4374 | { | |
4375 | ++input_line_pointer; | |
4376 | continue; | |
4377 | } | |
4378 | ||
4379 | if (i >= length) | |
4380 | { | |
0e389e77 | 4381 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4382 | return -1; |
4383 | } | |
4384 | d = hex_value (*input_line_pointer) << 4; | |
4385 | ++input_line_pointer; | |
4386 | while (*input_line_pointer == '_') | |
4387 | ++input_line_pointer; | |
4388 | if (hex_p (*input_line_pointer)) | |
4389 | { | |
4390 | d += hex_value (*input_line_pointer); | |
4391 | ++input_line_pointer; | |
4392 | } | |
4393 | if (target_big_endian) | |
4394 | bytes[i] = d; | |
4395 | else | |
4396 | bytes[length - i - 1] = d; | |
4397 | ++i; | |
4398 | } | |
4399 | ||
4400 | if (i < length) | |
4401 | { | |
4402 | if (target_big_endian) | |
4403 | memset (bytes + i, 0, length - i); | |
4404 | else | |
4405 | memset (bytes, 0, length - i); | |
4406 | } | |
4407 | ||
4408 | return length; | |
4409 | } | |
4410 | ||
d6415f6c | 4411 | /* float_cons() |
f0e652b4 | 4412 | |
041ff4dd NC |
4413 | CONStruct some more frag chars of .floats .ffloats etc. |
4414 | Makes 0 or more new frags. | |
4415 | If need_pass_2 == 1, no frags are emitted. | |
4416 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4417 | |
041ff4dd NC |
4418 | A floating constant is defined by atof_generic(), except it is preceded |
4419 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4420 | reading, I decided to be incompatible. This always tries to give you | |
4421 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4422 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4423 | a choice of 2 flavours of noise according to which of 2 floating-point |
4424 | scanners you directed AS to use. | |
f0e652b4 | 4425 | |
041ff4dd | 4426 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4427 | |
4428 | void | |
39e6acbd KH |
4429 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
4430 | register int float_type /* 'f':.ffloat ... 'F':.float ... */) | |
252b5132 RH |
4431 | { |
4432 | register char *p; | |
041ff4dd NC |
4433 | int length; /* Number of chars in an object. */ |
4434 | register char *err; /* Error from scanning floating literal. */ | |
252b5132 RH |
4435 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4436 | ||
4437 | if (is_it_end_of_statement ()) | |
4438 | { | |
4439 | demand_empty_rest_of_line (); | |
4440 | return; | |
4441 | } | |
4442 | ||
4443 | #ifdef md_flush_pending_output | |
4444 | md_flush_pending_output (); | |
4445 | #endif | |
4446 | ||
4447 | do | |
4448 | { | |
041ff4dd | 4449 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4450 | SKIP_WHITESPACE (); |
4451 | ||
4452 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4453 | letter is legal. Someone may invent a "z" format and this routine |
4454 | has no use for such information. Lusers beware: you get | |
4455 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4456 | if (input_line_pointer[0] == '0' |
3882b010 | 4457 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4458 | input_line_pointer += 2; |
4459 | ||
4460 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4461 | point with the exact digits specified. */ |
252b5132 RH |
4462 | if (input_line_pointer[0] == ':') |
4463 | { | |
4464 | ++input_line_pointer; | |
4465 | length = hex_float (float_type, temp); | |
4466 | if (length < 0) | |
4467 | { | |
4468 | ignore_rest_of_line (); | |
4469 | return; | |
4470 | } | |
4471 | } | |
4472 | else | |
4473 | { | |
4474 | err = md_atof (float_type, temp, &length); | |
4475 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
4476 | know (length > 0); | |
4477 | if (err) | |
4478 | { | |
0e389e77 | 4479 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4480 | ignore_rest_of_line (); |
4481 | return; | |
4482 | } | |
4483 | } | |
4484 | ||
4485 | if (!need_pass_2) | |
4486 | { | |
4487 | int count; | |
4488 | ||
4489 | count = 1; | |
4490 | ||
4491 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4492 | if (*input_line_pointer == ':') | |
4493 | { | |
4494 | expressionS count_exp; | |
4495 | ||
4496 | ++input_line_pointer; | |
4497 | expression (&count_exp); | |
f0e652b4 | 4498 | |
252b5132 RH |
4499 | if (count_exp.X_op != O_constant |
4500 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4501 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4502 | else |
4503 | count = count_exp.X_add_number; | |
4504 | } | |
4505 | #endif | |
4506 | ||
4507 | while (--count >= 0) | |
4508 | { | |
4509 | p = frag_more (length); | |
4510 | memcpy (p, temp, (unsigned int) length); | |
4511 | } | |
4512 | } | |
4513 | SKIP_WHITESPACE (); | |
4514 | } | |
4515 | while (*input_line_pointer++ == ','); | |
4516 | ||
041ff4dd NC |
4517 | /* Put terminator back into stream. */ |
4518 | --input_line_pointer; | |
252b5132 | 4519 | demand_empty_rest_of_line (); |
041ff4dd | 4520 | } |
252b5132 | 4521 | \f |
041ff4dd | 4522 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4523 | |
4524 | static inline int | |
39e6acbd | 4525 | sizeof_sleb128 (offsetT value) |
252b5132 RH |
4526 | { |
4527 | register int size = 0; | |
4528 | register unsigned byte; | |
4529 | ||
4530 | do | |
4531 | { | |
4532 | byte = (value & 0x7f); | |
4533 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4534 | Fortunately, we can structure things so that the extra work reduces | |
4535 | to a noop on systems that do things "properly". */ | |
4536 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4537 | size += 1; | |
4538 | } | |
4539 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4540 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4541 | ||
4542 | return size; | |
4543 | } | |
4544 | ||
4545 | static inline int | |
39e6acbd | 4546 | sizeof_uleb128 (valueT value) |
252b5132 RH |
4547 | { |
4548 | register int size = 0; | |
4549 | register unsigned byte; | |
4550 | ||
4551 | do | |
4552 | { | |
4553 | byte = (value & 0x7f); | |
4554 | value >>= 7; | |
4555 | size += 1; | |
4556 | } | |
4557 | while (value != 0); | |
4558 | ||
4559 | return size; | |
4560 | } | |
4561 | ||
4562 | int | |
39e6acbd | 4563 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4564 | { |
4565 | if (sign) | |
4566 | return sizeof_sleb128 ((offsetT) value); | |
4567 | else | |
4568 | return sizeof_uleb128 (value); | |
4569 | } | |
4570 | ||
4571 | /* Output a LEB128 value. */ | |
4572 | ||
4573 | static inline int | |
39e6acbd | 4574 | output_sleb128 (char *p, offsetT value) |
252b5132 RH |
4575 | { |
4576 | register char *orig = p; | |
4577 | register int more; | |
4578 | ||
4579 | do | |
4580 | { | |
4581 | unsigned byte = (value & 0x7f); | |
4582 | ||
4583 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4584 | Fortunately, we can structure things so that the extra work reduces | |
4585 | to a noop on systems that do things "properly". */ | |
4586 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4587 | ||
4588 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4589 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4590 | if (more) | |
4591 | byte |= 0x80; | |
4592 | ||
4593 | *p++ = byte; | |
4594 | } | |
4595 | while (more); | |
4596 | ||
4597 | return p - orig; | |
4598 | } | |
4599 | ||
4600 | static inline int | |
39e6acbd | 4601 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4602 | { |
4603 | char *orig = p; | |
4604 | ||
4605 | do | |
4606 | { | |
4607 | unsigned byte = (value & 0x7f); | |
4608 | value >>= 7; | |
4609 | if (value != 0) | |
4610 | /* More bytes to follow. */ | |
4611 | byte |= 0x80; | |
4612 | ||
4613 | *p++ = byte; | |
4614 | } | |
4615 | while (value != 0); | |
4616 | ||
4617 | return p - orig; | |
4618 | } | |
4619 | ||
4620 | int | |
39e6acbd | 4621 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4622 | { |
4623 | if (sign) | |
4624 | return output_sleb128 (p, (offsetT) value); | |
4625 | else | |
4626 | return output_uleb128 (p, value); | |
4627 | } | |
4628 | ||
4629 | /* Do the same for bignums. We combine sizeof with output here in that | |
4630 | we don't output for NULL values of P. It isn't really as critical as | |
4631 | for "normal" values that this be streamlined. */ | |
4632 | ||
6d4d30bb | 4633 | static inline int |
39e6acbd | 4634 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4635 | { |
4636 | char *orig = p; | |
4637 | valueT val = 0; | |
4638 | int loaded = 0; | |
4639 | unsigned byte; | |
4640 | ||
4641 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4642 | while (size > 1 |
4643 | && bignum[size - 1] == LITTLENUM_MASK | |
4644 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4645 | size--; |
4646 | ||
4647 | do | |
4648 | { | |
e5604d79 RS |
4649 | /* OR in the next part of the littlenum. */ |
4650 | val |= (*bignum << loaded); | |
4651 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4652 | size--; | |
4653 | bignum++; | |
4654 | ||
4655 | /* Add bytes until there are less than 7 bits left in VAL | |
4656 | or until every non-sign bit has been written. */ | |
4657 | do | |
252b5132 | 4658 | { |
e5604d79 RS |
4659 | byte = val & 0x7f; |
4660 | loaded -= 7; | |
4661 | val >>= 7; | |
4662 | if (size > 0 | |
4663 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 4664 | byte |= 0x80; |
e5604d79 RS |
4665 | |
4666 | if (orig) | |
4667 | *p = byte; | |
4668 | p++; | |
252b5132 | 4669 | } |
e5604d79 RS |
4670 | while ((byte & 0x80) != 0 && loaded >= 7); |
4671 | } | |
4672 | while (size > 0); | |
252b5132 | 4673 | |
e5604d79 RS |
4674 | /* Mop up any left-over bits (of which there will be less than 7). */ |
4675 | if ((byte & 0x80) != 0) | |
4676 | { | |
4677 | /* Sign-extend VAL. */ | |
4678 | if (val & (1 << (loaded - 1))) | |
4679 | val |= ~0 << loaded; | |
252b5132 | 4680 | if (orig) |
e5604d79 | 4681 | *p = val & 0x7f; |
252b5132 RH |
4682 | p++; |
4683 | } | |
252b5132 RH |
4684 | |
4685 | return p - orig; | |
4686 | } | |
4687 | ||
6d4d30bb | 4688 | static inline int |
39e6acbd | 4689 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4690 | { |
4691 | char *orig = p; | |
4692 | valueT val = 0; | |
4693 | int loaded = 0; | |
4694 | unsigned byte; | |
4695 | ||
4696 | /* Strip leading zeros off the bignum. */ | |
4697 | /* XXX: Is this needed? */ | |
041ff4dd | 4698 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4699 | size--; |
4700 | ||
4701 | do | |
4702 | { | |
4703 | if (loaded < 7 && size > 0) | |
4704 | { | |
4705 | val |= (*bignum << loaded); | |
4706 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4707 | size--; | |
4708 | bignum++; | |
4709 | } | |
4710 | ||
4711 | byte = val & 0x7f; | |
4712 | loaded -= 7; | |
4713 | val >>= 7; | |
4714 | ||
4715 | if (size > 0 || val) | |
4716 | byte |= 0x80; | |
4717 | ||
4718 | if (orig) | |
4719 | *p = byte; | |
4720 | p++; | |
4721 | } | |
4722 | while (byte & 0x80); | |
4723 | ||
4724 | return p - orig; | |
4725 | } | |
4726 | ||
6d4d30bb | 4727 | static int |
39e6acbd | 4728 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
4729 | { |
4730 | if (sign) | |
4731 | return output_big_sleb128 (p, bignum, size); | |
4732 | else | |
4733 | return output_big_uleb128 (p, bignum, size); | |
4734 | } | |
4735 | ||
4736 | /* Generate the appropriate fragments for a given expression to emit a | |
4737 | leb128 value. */ | |
4738 | ||
87c245cc | 4739 | static void |
39e6acbd | 4740 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
4741 | { |
4742 | operatorT op = exp->X_op; | |
b7712f8d | 4743 | unsigned int nbytes; |
252b5132 RH |
4744 | |
4745 | if (op == O_absent || op == O_illegal) | |
4746 | { | |
4747 | as_warn (_("zero assumed for missing expression")); | |
4748 | exp->X_add_number = 0; | |
4749 | op = O_constant; | |
4750 | } | |
4751 | else if (op == O_big && exp->X_add_number <= 0) | |
4752 | { | |
0e389e77 | 4753 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4754 | exp->X_add_number = 0; |
4755 | op = O_constant; | |
4756 | } | |
4757 | else if (op == O_register) | |
4758 | { | |
4759 | as_warn (_("register value used as expression")); | |
4760 | op = O_constant; | |
4761 | } | |
e5604d79 RS |
4762 | else if (op == O_constant |
4763 | && sign | |
4764 | && (exp->X_add_number < 0) != !exp->X_unsigned) | |
4765 | { | |
4766 | /* We're outputting a signed leb128 and the sign of X_add_number | |
4767 | doesn't reflect the sign of the original value. Convert EXP | |
4768 | to a correctly-extended bignum instead. */ | |
4769 | convert_to_bignum (exp); | |
4770 | op = O_big; | |
4771 | } | |
252b5132 | 4772 | |
67a659f6 RH |
4773 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
4774 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 4775 | nbytes = (unsigned int) -1; |
67a659f6 RH |
4776 | if (check_eh_frame (exp, &nbytes)) |
4777 | abort (); | |
4778 | ||
371b7465 RH |
4779 | /* Let the backend know that subsequent data may be byte aligned. */ |
4780 | #ifdef md_cons_align | |
4781 | md_cons_align (1); | |
4782 | #endif | |
4783 | ||
252b5132 RH |
4784 | if (op == O_constant) |
4785 | { | |
4786 | /* If we've got a constant, emit the thing directly right now. */ | |
4787 | ||
4788 | valueT value = exp->X_add_number; | |
4789 | int size; | |
4790 | char *p; | |
4791 | ||
4792 | size = sizeof_leb128 (value, sign); | |
4793 | p = frag_more (size); | |
4794 | output_leb128 (p, value, sign); | |
4795 | } | |
4796 | else if (op == O_big) | |
4797 | { | |
4798 | /* O_big is a different sort of constant. */ | |
4799 | ||
4800 | int size; | |
4801 | char *p; | |
4802 | ||
4803 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
4804 | p = frag_more (size); | |
4805 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
4806 | } | |
4807 | else | |
4808 | { | |
041ff4dd | 4809 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
4810 | resolve things later. */ |
4811 | ||
041ff4dd | 4812 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
4813 | make_expr_symbol (exp), 0, (char *) NULL); |
4814 | } | |
4815 | } | |
4816 | ||
4817 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
4818 | ||
4819 | void | |
39e6acbd | 4820 | s_leb128 (int sign) |
252b5132 RH |
4821 | { |
4822 | expressionS exp; | |
4823 | ||
00bbdfe7 BW |
4824 | #ifdef md_flush_pending_output |
4825 | md_flush_pending_output (); | |
4826 | #endif | |
4827 | ||
041ff4dd NC |
4828 | do |
4829 | { | |
4830 | expression (&exp); | |
4831 | emit_leb128_expr (&exp, sign); | |
4832 | } | |
4833 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
4834 | |
4835 | input_line_pointer--; | |
4836 | demand_empty_rest_of_line (); | |
4837 | } | |
4838 | \f | |
041ff4dd NC |
4839 | /* We read 0 or more ',' separated, double-quoted strings. |
4840 | Caller should have checked need_pass_2 is FALSE because we don't | |
4841 | check it. */ | |
4842 | ||
4843 | void | |
39e6acbd KH |
4844 | stringer (/* Worker to do .ascii etc statements. */ |
4845 | /* Checks end-of-line. */ | |
4846 | register int append_zero /* 0: don't append '\0', else 1. */) | |
252b5132 RH |
4847 | { |
4848 | register unsigned int c; | |
4849 | char *start; | |
4850 | ||
4851 | #ifdef md_flush_pending_output | |
4852 | md_flush_pending_output (); | |
4853 | #endif | |
4854 | ||
041ff4dd NC |
4855 | /* The following awkward logic is to parse ZERO or more strings, |
4856 | comma separated. Recall a string expression includes spaces | |
4857 | before the opening '\"' and spaces after the closing '\"'. | |
4858 | We fake a leading ',' if there is (supposed to be) | |
4859 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
4860 | if (is_it_end_of_statement ()) |
4861 | { | |
041ff4dd NC |
4862 | c = 0; /* Skip loop. */ |
4863 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
4864 | } |
4865 | else | |
4866 | { | |
041ff4dd | 4867 | c = ','; /* Do loop. */ |
252b5132 | 4868 | } |
8ac9ba6c NC |
4869 | /* If we have been switched into the abs_section then we |
4870 | will not have an obstack onto which we can hang strings. */ | |
4871 | if (now_seg == absolute_section) | |
4872 | { | |
4873 | as_bad (_("strings must be placed into a section")); | |
4874 | c = 0; | |
4875 | ignore_rest_of_line (); | |
4876 | } | |
d6415f6c | 4877 | |
252b5132 RH |
4878 | while (c == ',' || c == '<' || c == '"') |
4879 | { | |
4880 | SKIP_WHITESPACE (); | |
4881 | switch (*input_line_pointer) | |
4882 | { | |
4883 | case '\"': | |
041ff4dd | 4884 | ++input_line_pointer; /*->1st char of string. */ |
252b5132 RH |
4885 | start = input_line_pointer; |
4886 | while (is_a_char (c = next_char_of_string ())) | |
4887 | { | |
4888 | FRAG_APPEND_1_CHAR (c); | |
4889 | } | |
4890 | if (append_zero) | |
4891 | { | |
4892 | FRAG_APPEND_1_CHAR (0); | |
4893 | } | |
4894 | know (input_line_pointer[-1] == '\"'); | |
4895 | ||
4896 | #ifndef NO_LISTING | |
4897 | #ifdef OBJ_ELF | |
4898 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | |
d6415f6c AM |
4899 | will emit .string with a filename in the .debug section |
4900 | after a sequence of constants. See the comment in | |
4901 | emit_expr for the sequence. emit_expr will set | |
4902 | dwarf_file_string to non-zero if this string might be a | |
4903 | source file name. */ | |
252b5132 RH |
4904 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
4905 | dwarf_file_string = 0; | |
4906 | else if (dwarf_file_string) | |
4907 | { | |
4908 | c = input_line_pointer[-1]; | |
4909 | input_line_pointer[-1] = '\0'; | |
4910 | listing_source_file (start); | |
4911 | input_line_pointer[-1] = c; | |
4912 | } | |
4913 | #endif | |
4914 | #endif | |
4915 | ||
4916 | break; | |
4917 | case '<': | |
4918 | input_line_pointer++; | |
4919 | c = get_single_number (); | |
4920 | FRAG_APPEND_1_CHAR (c); | |
4921 | if (*input_line_pointer != '>') | |
4922 | { | |
0e389e77 | 4923 | as_bad (_("expected <nn>")); |
252b5132 RH |
4924 | } |
4925 | input_line_pointer++; | |
4926 | break; | |
4927 | case ',': | |
4928 | input_line_pointer++; | |
4929 | break; | |
4930 | } | |
4931 | SKIP_WHITESPACE (); | |
4932 | c = *input_line_pointer; | |
4933 | } | |
4934 | ||
4935 | demand_empty_rest_of_line (); | |
4936 | } /* stringer() */ | |
4937 | \f | |
4938 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
4939 | high bits set. We'll probably also have trouble with | |
4940 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 4941 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 4942 | |
041ff4dd | 4943 | unsigned int |
39e6acbd | 4944 | next_char_of_string (void) |
252b5132 RH |
4945 | { |
4946 | register unsigned int c; | |
4947 | ||
4948 | c = *input_line_pointer++ & CHAR_MASK; | |
4949 | switch (c) | |
4950 | { | |
4951 | case '\"': | |
4952 | c = NOT_A_CHAR; | |
4953 | break; | |
4954 | ||
4955 | case '\n': | |
0e389e77 | 4956 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4957 | bump_line_counters (); |
4958 | break; | |
4959 | ||
4960 | #ifndef NO_STRING_ESCAPES | |
4961 | case '\\': | |
4962 | switch (c = *input_line_pointer++) | |
4963 | { | |
4964 | case 'b': | |
4965 | c = '\b'; | |
4966 | break; | |
4967 | ||
4968 | case 'f': | |
4969 | c = '\f'; | |
4970 | break; | |
4971 | ||
4972 | case 'n': | |
4973 | c = '\n'; | |
4974 | break; | |
4975 | ||
4976 | case 'r': | |
4977 | c = '\r'; | |
4978 | break; | |
4979 | ||
4980 | case 't': | |
4981 | c = '\t'; | |
4982 | break; | |
4983 | ||
4984 | case 'v': | |
4985 | c = '\013'; | |
4986 | break; | |
4987 | ||
4988 | case '\\': | |
4989 | case '"': | |
041ff4dd | 4990 | break; /* As itself. */ |
252b5132 RH |
4991 | |
4992 | case '0': | |
4993 | case '1': | |
4994 | case '2': | |
4995 | case '3': | |
4996 | case '4': | |
4997 | case '5': | |
4998 | case '6': | |
4999 | case '7': | |
5000 | case '8': | |
5001 | case '9': | |
5002 | { | |
5003 | long number; | |
5004 | int i; | |
5005 | ||
041ff4dd | 5006 | for (i = 0, number = 0; |
3882b010 | 5007 | ISDIGIT (c) && i < 3; |
041ff4dd | 5008 | c = *input_line_pointer++, i++) |
252b5132 RH |
5009 | { |
5010 | number = number * 8 + c - '0'; | |
5011 | } | |
f0e652b4 | 5012 | |
252b5132 RH |
5013 | c = number & 0xff; |
5014 | } | |
5015 | --input_line_pointer; | |
5016 | break; | |
5017 | ||
5018 | case 'x': | |
5019 | case 'X': | |
5020 | { | |
5021 | long number; | |
5022 | ||
5023 | number = 0; | |
5024 | c = *input_line_pointer++; | |
3882b010 | 5025 | while (ISXDIGIT (c)) |
252b5132 | 5026 | { |
3882b010 | 5027 | if (ISDIGIT (c)) |
252b5132 | 5028 | number = number * 16 + c - '0'; |
3882b010 | 5029 | else if (ISUPPER (c)) |
252b5132 RH |
5030 | number = number * 16 + c - 'A' + 10; |
5031 | else | |
5032 | number = number * 16 + c - 'a' + 10; | |
5033 | c = *input_line_pointer++; | |
5034 | } | |
5035 | c = number & 0xff; | |
5036 | --input_line_pointer; | |
5037 | } | |
5038 | break; | |
5039 | ||
5040 | case '\n': | |
041ff4dd | 5041 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5042 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5043 | c = '\n'; |
5044 | bump_line_counters (); | |
5045 | break; | |
5046 | ||
5047 | default: | |
5048 | ||
5049 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5050 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5051 | c = '?'; |
5052 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5053 | ||
5054 | break; | |
041ff4dd | 5055 | } |
252b5132 RH |
5056 | break; |
5057 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
5058 | ||
5059 | default: | |
5060 | break; | |
041ff4dd | 5061 | } |
252b5132 | 5062 | return (c); |
041ff4dd | 5063 | } |
252b5132 RH |
5064 | \f |
5065 | static segT | |
39e6acbd | 5066 | get_segmented_expression (register expressionS *expP) |
252b5132 RH |
5067 | { |
5068 | register segT retval; | |
5069 | ||
5070 | retval = expression (expP); | |
5071 | if (expP->X_op == O_illegal | |
5072 | || expP->X_op == O_absent | |
5073 | || expP->X_op == O_big) | |
5074 | { | |
0e389e77 | 5075 | as_bad (_("expected address expression")); |
252b5132 RH |
5076 | expP->X_op = O_constant; |
5077 | expP->X_add_number = 0; | |
5078 | retval = absolute_section; | |
5079 | } | |
5080 | return retval; | |
5081 | } | |
5082 | ||
041ff4dd | 5083 | static segT |
39e6acbd | 5084 | get_known_segmented_expression (register expressionS *expP) |
252b5132 RH |
5085 | { |
5086 | register segT retval; | |
5087 | ||
5088 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
5089 | { | |
5090 | /* There is no easy way to extract the undefined symbol from the | |
5091 | expression. */ | |
5092 | if (expP->X_add_symbol != NULL | |
5093 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5094 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5095 | S_GET_NAME (expP->X_add_symbol)); | |
5096 | else | |
5097 | as_warn (_("some symbol undefined; zero assumed")); | |
5098 | retval = absolute_section; | |
5099 | expP->X_op = O_constant; | |
5100 | expP->X_add_number = 0; | |
5101 | } | |
5102 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
5103 | return (retval); | |
041ff4dd | 5104 | } |
252b5132 | 5105 | |
041ff4dd | 5106 | char /* Return terminator. */ |
39e6acbd | 5107 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5108 | { |
5109 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5110 | *val_pointer = (long) get_absolute_expression (); | |
5111 | return (*input_line_pointer++); | |
5112 | } | |
5113 | \f | |
041ff4dd NC |
5114 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5115 | Give a warning if that happens. */ | |
5116 | ||
252b5132 | 5117 | char * |
39e6acbd | 5118 | demand_copy_C_string (int *len_pointer) |
252b5132 RH |
5119 | { |
5120 | register char *s; | |
5121 | ||
5122 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5123 | { | |
5124 | register int len; | |
5125 | ||
5126 | for (len = *len_pointer; len > 0; len--) | |
5127 | { | |
5128 | if (*s == 0) | |
5129 | { | |
5130 | s = 0; | |
5131 | len = 1; | |
5132 | *len_pointer = 0; | |
0e389e77 | 5133 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5134 | } |
5135 | } | |
5136 | } | |
f0e652b4 | 5137 | |
252b5132 RH |
5138 | return s; |
5139 | } | |
5140 | \f | |
041ff4dd NC |
5141 | /* Demand string, but return a safe (=private) copy of the string. |
5142 | Return NULL if we can't read a string here. */ | |
5143 | ||
252b5132 | 5144 | char * |
39e6acbd | 5145 | demand_copy_string (int *lenP) |
252b5132 RH |
5146 | { |
5147 | register unsigned int c; | |
5148 | register int len; | |
5149 | char *retval; | |
5150 | ||
5151 | len = 0; | |
5152 | SKIP_WHITESPACE (); | |
5153 | if (*input_line_pointer == '\"') | |
5154 | { | |
041ff4dd | 5155 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5156 | |
5157 | while (is_a_char (c = next_char_of_string ())) | |
5158 | { | |
5159 | obstack_1grow (¬es, c); | |
5160 | len++; | |
5161 | } | |
5162 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5163 | null terminated string. */ |
252b5132 RH |
5164 | obstack_1grow (¬es, '\0'); |
5165 | retval = obstack_finish (¬es); | |
5166 | } | |
5167 | else | |
5168 | { | |
c95b35a9 | 5169 | as_bad (_("missing string")); |
252b5132 RH |
5170 | retval = NULL; |
5171 | ignore_rest_of_line (); | |
5172 | } | |
5173 | *lenP = len; | |
5174 | return (retval); | |
041ff4dd | 5175 | } |
252b5132 | 5176 | \f |
041ff4dd | 5177 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5178 | |
041ff4dd | 5179 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5180 | |
041ff4dd NC |
5181 | Out: 1 if input_line_pointer->end-of-line. */ |
5182 | ||
5183 | int | |
39e6acbd | 5184 | is_it_end_of_statement (void) |
252b5132 RH |
5185 | { |
5186 | SKIP_WHITESPACE (); | |
5187 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5188 | } |
252b5132 | 5189 | |
041ff4dd | 5190 | void |
39e6acbd | 5191 | equals (char *sym_name, int reassign) |
252b5132 | 5192 | { |
252b5132 | 5193 | char *stop = NULL; |
fb25138b | 5194 | char stopc = 0; |
252b5132 RH |
5195 | |
5196 | input_line_pointer++; | |
5197 | if (*input_line_pointer == '=') | |
5198 | input_line_pointer++; | |
9497f5ac NC |
5199 | if (reassign < 0 && *input_line_pointer == '=') |
5200 | input_line_pointer++; | |
252b5132 RH |
5201 | |
5202 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5203 | input_line_pointer++; | |
5204 | ||
5205 | if (flag_mri) | |
5206 | stop = mri_comment_field (&stopc); | |
5207 | ||
9497f5ac | 5208 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5209 | |
5210 | if (flag_mri) | |
31d20a21 AM |
5211 | { |
5212 | demand_empty_rest_of_line (); | |
5213 | mri_comment_end (stop, stopc); | |
5214 | } | |
041ff4dd | 5215 | } |
252b5132 | 5216 | |
7e005732 NC |
5217 | /* .incbin -- include a file verbatim at the current location. */ |
5218 | ||
5219 | void | |
39e6acbd | 5220 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5221 | { |
5222 | FILE * binfile; | |
5223 | char * path; | |
5224 | char * filename; | |
5225 | char * binfrag; | |
5226 | long skip = 0; | |
5227 | long count = 0; | |
5228 | long bytes; | |
5229 | int len; | |
5230 | ||
5231 | #ifdef md_flush_pending_output | |
5232 | md_flush_pending_output (); | |
5233 | #endif | |
5234 | ||
5235 | SKIP_WHITESPACE (); | |
5236 | filename = demand_copy_string (& len); | |
5237 | if (filename == NULL) | |
5238 | return; | |
5239 | ||
5240 | SKIP_WHITESPACE (); | |
5241 | ||
5242 | /* Look for optional skip and count. */ | |
5243 | if (* input_line_pointer == ',') | |
5244 | { | |
5245 | ++ input_line_pointer; | |
5246 | skip = get_absolute_expression (); | |
5247 | ||
5248 | SKIP_WHITESPACE (); | |
5249 | ||
5250 | if (* input_line_pointer == ',') | |
5251 | { | |
5252 | ++ input_line_pointer; | |
5253 | ||
5254 | count = get_absolute_expression (); | |
5255 | if (count == 0) | |
5256 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5257 | ||
5258 | SKIP_WHITESPACE (); | |
5259 | } | |
5260 | } | |
5261 | ||
5262 | demand_empty_rest_of_line (); | |
5263 | ||
5264 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5265 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5266 | if (binfile == NULL) |
5267 | { | |
5268 | int i; | |
5269 | ||
5270 | path = xmalloc ((unsigned long) len + include_dir_maxlen + 5); | |
5271 | ||
5272 | for (i = 0; i < include_dir_count; i++) | |
5273 | { | |
5274 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5275 | ||
f740e790 | 5276 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5277 | if (binfile != NULL) |
5278 | break; | |
5279 | } | |
5280 | ||
5281 | if (binfile == NULL) | |
5282 | as_bad (_("file not found: %s"), filename); | |
5283 | } | |
5284 | else | |
5285 | path = xstrdup (filename); | |
5286 | ||
5287 | if (binfile) | |
5288 | { | |
f740e790 NC |
5289 | long file_len; |
5290 | ||
7e005732 NC |
5291 | register_dependency (path); |
5292 | ||
5293 | /* Compute the length of the file. */ | |
5294 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5295 | { | |
5296 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5297 | goto done; | |
5298 | } | |
f740e790 | 5299 | file_len = ftell (binfile); |
7e005732 | 5300 | |
c556cc9c | 5301 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5302 | if (count == 0) |
c556cc9c | 5303 | count = file_len - skip; |
7e005732 | 5304 | |
c556cc9c | 5305 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5306 | { |
c556cc9c | 5307 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5308 | skip, count, file_len); |
7e005732 NC |
5309 | goto done; |
5310 | } | |
5311 | ||
5312 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5313 | { | |
5314 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5315 | goto done; | |
5316 | } | |
5317 | ||
5318 | /* Allocate frag space and store file contents in it. */ | |
5319 | binfrag = frag_more (count); | |
5320 | ||
5321 | bytes = fread (binfrag, 1, count, binfile); | |
5322 | if (bytes < count) | |
5323 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5324 | path, bytes, count); | |
5325 | } | |
5326 | done: | |
5327 | if (binfile != NULL) | |
5328 | fclose (binfile); | |
5329 | if (path) | |
5330 | free (path); | |
5331 | } | |
5332 | ||
041ff4dd | 5333 | /* .include -- include a file at this point. */ |
252b5132 | 5334 | |
041ff4dd | 5335 | void |
39e6acbd | 5336 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5337 | { |
252b5132 RH |
5338 | char *filename; |
5339 | int i; | |
5340 | FILE *try; | |
5341 | char *path; | |
5342 | ||
041ff4dd | 5343 | if (!flag_m68k_mri) |
252b5132 RH |
5344 | { |
5345 | filename = demand_copy_string (&i); | |
5346 | if (filename == NULL) | |
5347 | { | |
5348 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5349 | called ignore_rest_of_line. */ |
252b5132 RH |
5350 | return; |
5351 | } | |
5352 | } | |
5353 | else | |
5354 | { | |
5355 | SKIP_WHITESPACE (); | |
5356 | i = 0; | |
041ff4dd | 5357 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5358 | && *input_line_pointer != ' ' |
5359 | && *input_line_pointer != '\t') | |
5360 | { | |
5361 | obstack_1grow (¬es, *input_line_pointer); | |
5362 | ++input_line_pointer; | |
5363 | ++i; | |
5364 | } | |
f0e652b4 | 5365 | |
252b5132 RH |
5366 | obstack_1grow (¬es, '\0'); |
5367 | filename = obstack_finish (¬es); | |
041ff4dd | 5368 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5369 | ++input_line_pointer; |
5370 | } | |
f0e652b4 | 5371 | |
252b5132 RH |
5372 | demand_empty_rest_of_line (); |
5373 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5374 | |
252b5132 RH |
5375 | for (i = 0; i < include_dir_count; i++) |
5376 | { | |
5377 | strcpy (path, include_dirs[i]); | |
5378 | strcat (path, "/"); | |
5379 | strcat (path, filename); | |
f740e790 | 5380 | if (0 != (try = fopen (path, FOPEN_RT))) |
252b5132 RH |
5381 | { |
5382 | fclose (try); | |
5383 | goto gotit; | |
5384 | } | |
5385 | } | |
f0e652b4 | 5386 | |
252b5132 RH |
5387 | free (path); |
5388 | path = filename; | |
5389 | gotit: | |
041ff4dd | 5390 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5391 | register_dependency (path); |
9f10757c | 5392 | input_scrub_insert_file (path); |
041ff4dd | 5393 | } |
252b5132 | 5394 | |
041ff4dd | 5395 | void |
39e6acbd | 5396 | add_include_dir (char *path) |
252b5132 RH |
5397 | { |
5398 | int i; | |
5399 | ||
5400 | if (include_dir_count == 0) | |
5401 | { | |
5402 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5403 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5404 | include_dir_count = 2; |
5405 | } | |
5406 | else | |
5407 | { | |
5408 | include_dir_count++; | |
041ff4dd NC |
5409 | include_dirs = |
5410 | (char **) realloc (include_dirs, | |
5411 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5412 | } |
5413 | ||
041ff4dd | 5414 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5415 | |
5416 | i = strlen (path); | |
5417 | if (i > include_dir_maxlen) | |
5418 | include_dir_maxlen = i; | |
041ff4dd | 5419 | } |
252b5132 RH |
5420 | \f |
5421 | /* Output debugging information to denote the source file. */ | |
5422 | ||
5423 | static void | |
39e6acbd | 5424 | generate_file_debug (void) |
252b5132 RH |
5425 | { |
5426 | if (debug_type == DEBUG_STABS) | |
5427 | stabs_generate_asm_file (); | |
5428 | } | |
5429 | ||
5430 | /* Output line number debugging information for the current source line. */ | |
5431 | ||
5432 | void | |
39e6acbd | 5433 | generate_lineno_debug (void) |
252b5132 | 5434 | { |
252b5132 RH |
5435 | switch (debug_type) |
5436 | { | |
5437 | case DEBUG_UNSPECIFIED: | |
5438 | case DEBUG_NONE: | |
4dc7ead9 | 5439 | case DEBUG_DWARF: |
252b5132 RH |
5440 | break; |
5441 | case DEBUG_STABS: | |
5442 | stabs_generate_asm_lineno (); | |
5443 | break; | |
5444 | case DEBUG_ECOFF: | |
5445 | ecoff_generate_asm_lineno (); | |
5446 | break; | |
252b5132 | 5447 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5448 | /* ??? We could here indicate to dwarf2dbg.c that something |
5449 | has changed. However, since there is additional backend | |
5450 | support that is required (calling dwarf2_emit_insn), we | |
5451 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5452 | break; |
5453 | } | |
5454 | } | |
5455 | ||
5456 | /* Output debugging information to mark a function entry point or end point. | |
5457 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5458 | ||
5459 | void | |
39e6acbd | 5460 | s_func (int end_p) |
252b5132 RH |
5461 | { |
5462 | do_s_func (end_p, NULL); | |
5463 | } | |
5464 | ||
5465 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5466 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5467 | ||
87c245cc | 5468 | static void |
39e6acbd | 5469 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5470 | { |
5471 | /* Record the current function so that we can issue an error message for | |
5472 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5473 | arguments. */ | |
5474 | static char *current_name; | |
5475 | static char *current_label; | |
5476 | ||
5477 | if (end_p) | |
5478 | { | |
5479 | if (current_name == NULL) | |
5480 | { | |
5481 | as_bad (_("missing .func")); | |
5482 | ignore_rest_of_line (); | |
5483 | return; | |
5484 | } | |
5485 | ||
5486 | if (debug_type == DEBUG_STABS) | |
5487 | stabs_generate_asm_endfunc (current_name, current_label); | |
5488 | ||
5489 | current_name = current_label = NULL; | |
5490 | } | |
5491 | else /* ! end_p */ | |
5492 | { | |
041ff4dd NC |
5493 | char *name, *label; |
5494 | char delim1, delim2; | |
252b5132 RH |
5495 | |
5496 | if (current_name != NULL) | |
5497 | { | |
5498 | as_bad (_(".endfunc missing for previous .func")); | |
5499 | ignore_rest_of_line (); | |
5500 | return; | |
5501 | } | |
5502 | ||
5503 | name = input_line_pointer; | |
5504 | delim1 = get_symbol_end (); | |
5505 | name = xstrdup (name); | |
5506 | *input_line_pointer = delim1; | |
5507 | SKIP_WHITESPACE (); | |
5508 | if (*input_line_pointer != ',') | |
5509 | { | |
5510 | if (default_prefix) | |
5511 | asprintf (&label, "%s%s", default_prefix, name); | |
5512 | else | |
5513 | { | |
7be1c489 | 5514 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
5515 | /* Missing entry point, use function's name with the leading |
5516 | char prepended. */ | |
5517 | if (leading_char) | |
5518 | asprintf (&label, "%c%s", leading_char, name); | |
5519 | else | |
5520 | label = name; | |
5521 | } | |
5522 | } | |
5523 | else | |
5524 | { | |
5525 | ++input_line_pointer; | |
5526 | SKIP_WHITESPACE (); | |
5527 | label = input_line_pointer; | |
5528 | delim2 = get_symbol_end (); | |
5529 | label = xstrdup (label); | |
5530 | *input_line_pointer = delim2; | |
5531 | } | |
5532 | ||
5533 | if (debug_type == DEBUG_STABS) | |
5534 | stabs_generate_asm_func (name, label); | |
5535 | ||
5536 | current_name = name; | |
5537 | current_label = label; | |
5538 | } | |
5539 | ||
5540 | demand_empty_rest_of_line (); | |
5541 | } | |
5542 | \f | |
041ff4dd | 5543 | void |
39e6acbd | 5544 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5545 | { |
40a4d956 | 5546 | ignore_rest_of_line (); |
252b5132 RH |
5547 | } |
5548 | ||
252b5132 | 5549 | void |
39e6acbd | 5550 | read_print_statistics (FILE *file) |
252b5132 RH |
5551 | { |
5552 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5553 | } | |
5554 | ||
041ff4dd NC |
5555 | /* Inserts the given line into the input stream. |
5556 | ||
9f10757c TW |
5557 | This call avoids macro/conditionals nesting checking, since the contents of |
5558 | the line are assumed to replace the contents of a line already scanned. | |
5559 | ||
47eebc20 | 5560 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
5561 | called by md_start_line_hook(). The given line is assumed to already be |
5562 | properly scrubbed. */ | |
5563 | ||
5564 | void | |
39e6acbd | 5565 | input_scrub_insert_line (const char *line) |
9f10757c TW |
5566 | { |
5567 | sb newline; | |
5568 | sb_new (&newline); | |
5569 | sb_add_string (&newline, line); | |
5570 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5571 | sb_kill (&newline); | |
5572 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5573 | } | |
5574 | ||
5575 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5576 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5577 | |
5578 | void | |
39e6acbd | 5579 | input_scrub_insert_file (char *path) |
9f10757c TW |
5580 | { |
5581 | input_scrub_include_file (path, input_line_pointer); | |
5582 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5583 | } | |
40a4d956 JB |
5584 | |
5585 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
5586 | ||
5587 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
5588 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
5589 | #endif | |
5590 | ||
5591 | static char * | |
5592 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED) | |
5593 | { | |
5594 | char inquote = '\0'; | |
5595 | int inescape = 0; | |
5596 | ||
5597 | while (!is_end_of_line[(unsigned char) *s] | |
5598 | || (inquote && !ISCNTRL (*s)) | |
5599 | || (inquote == '\'' && flag_mri) | |
5600 | #ifdef TC_EOL_IN_INSN | |
5601 | || (insn && TC_EOL_IN_INSN (s)) | |
5602 | #endif | |
5603 | ) | |
5604 | { | |
5605 | if (mri_string && *s == '\'') | |
5606 | inquote ^= *s; | |
5607 | else if (inescape) | |
5608 | inescape = 0; | |
5609 | else if (*s == '\\') | |
5610 | inescape = 1; | |
5611 | else if (!inquote | |
5612 | ? *s == '"' | |
5613 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
5614 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
5615 | #endif | |
5616 | : *s == inquote) | |
5617 | inquote ^= *s; | |
5618 | ++s; | |
5619 | } | |
5620 | if (inquote) | |
5621 | as_warn (_("missing closing `%c'"), inquote); | |
5622 | if (inescape) | |
5623 | as_warn (_("stray `\\'")); | |
5624 | return s; | |
5625 | } | |
5626 | ||
5627 | char * | |
5628 | find_end_of_line (char *s, int mri_string) | |
5629 | { | |
5630 | return _find_end_of_line (s, mri_string, 0); | |
5631 | } |