Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
f7e42eb4 | 2 | Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
e5604d79 RS |
3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
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" | |
41 | #include "listing.h" | |
42 | #include "ecoff.h" | |
54cfded0 | 43 | #include "dw2gencfi.h" |
252b5132 RH |
44 | |
45 | #ifndef TC_START_LABEL | |
d1a6c242 | 46 | #define TC_START_LABEL(x,y) (x == ':') |
252b5132 RH |
47 | #endif |
48 | ||
8684e216 HPN |
49 | /* Set by the object-format or the target. */ |
50 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 51 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 52 | do \ |
d6415f6c AM |
53 | { \ |
54 | if ((SIZE) >= 8) \ | |
55 | (P2VAR) = 3; \ | |
56 | else if ((SIZE) >= 4) \ | |
57 | (P2VAR) = 2; \ | |
58 | else if ((SIZE) >= 2) \ | |
59 | (P2VAR) = 1; \ | |
60 | else \ | |
61 | (P2VAR) = 0; \ | |
041ff4dd NC |
62 | } \ |
63 | while (0) | |
8684e216 HPN |
64 | #endif |
65 | ||
041ff4dd | 66 | char *input_line_pointer; /*->next char of source file to parse. */ |
252b5132 RH |
67 | |
68 | #if BITS_PER_CHAR != 8 | |
69 | /* The following table is indexed by[(char)] and will break if | |
70 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
71 | die horribly; | |
72 | #endif | |
73 | ||
74 | #ifndef LEX_AT | |
252b5132 RH |
75 | #define LEX_AT 0 |
76 | #endif | |
77 | ||
78 | #ifndef LEX_BR | |
79 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
80 | #define LEX_BR 0 | |
81 | #endif | |
82 | ||
83 | #ifndef LEX_PCT | |
84 | /* The Delta 68k assembler permits % inside label names. */ | |
85 | #define LEX_PCT 0 | |
86 | #endif | |
87 | ||
88 | #ifndef LEX_QM | |
89 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
90 | #define LEX_QM 0 | |
91 | #endif | |
92 | ||
58b5739a | 93 | #ifndef LEX_HASH |
800eeca4 JW |
94 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
95 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
96 | #define LEX_HASH 0 |
97 | #endif | |
98 | ||
252b5132 | 99 | #ifndef LEX_DOLLAR |
252b5132 RH |
100 | #define LEX_DOLLAR 3 |
101 | #endif | |
102 | ||
103 | #ifndef LEX_TILDE | |
104 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
105 | #define LEX_TILDE 0 | |
106 | #endif | |
107 | ||
041ff4dd | 108 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 109 | char lex_type[256] = { |
252b5132 RH |
110 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 112 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
113 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
114 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
115 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
116 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 117 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
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 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
126 | }; | |
127 | ||
041ff4dd NC |
128 | /* In: a character. |
129 | Out: 1 if this character ends a line. */ | |
ef99799a | 130 | char is_end_of_line[256] = { |
252b5132 | 131 | #ifdef CR_EOL |
b75c0c92 | 132 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 133 | #else |
b75c0c92 | 134 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 135 | #endif |
b75c0c92 AM |
136 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
137 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
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, /* */ | |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
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, /* */ | |
150 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 151 | }; |
252b5132 | 152 | |
a8a3b3b2 | 153 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
154 | char original_case_string[128]; |
155 | #endif | |
156 | ||
041ff4dd | 157 | /* Functions private to this file. */ |
252b5132 | 158 | |
041ff4dd NC |
159 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
160 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 161 | |
041ff4dd NC |
162 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
163 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
164 | internals manual. */ | |
252b5132 RH |
165 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
166 | ||
041ff4dd | 167 | /* Variables for handling include file directory table. */ |
252b5132 | 168 | |
041ff4dd NC |
169 | /* Table of pointers to directories to search for .include's. */ |
170 | char **include_dirs; | |
171 | ||
172 | /* How many are in the table. */ | |
173 | int include_dir_count; | |
174 | ||
175 | /* Length of longest in table. */ | |
176 | int include_dir_maxlen = 1; | |
252b5132 RH |
177 | |
178 | #ifndef WORKING_DOT_WORD | |
179 | struct broken_word *broken_words; | |
180 | int new_broken_words; | |
181 | #endif | |
182 | ||
183 | /* The current offset into the absolute section. We don't try to | |
184 | build frags in the absolute section, since no data can be stored | |
185 | there. We just keep track of the current offset. */ | |
186 | addressT abs_section_offset; | |
187 | ||
188 | /* If this line had an MRI style label, it is stored in this variable. | |
189 | This is used by some of the MRI pseudo-ops. */ | |
190 | symbolS *line_label; | |
191 | ||
192 | /* This global variable is used to support MRI common sections. We | |
193 | translate such sections into a common symbol. This variable is | |
194 | non-NULL when we are in an MRI common section. */ | |
195 | symbolS *mri_common_symbol; | |
196 | ||
197 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
198 | need to align to an even byte boundary unless the next pseudo-op is | |
199 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
200 | may be needed. */ | |
201 | static int mri_pending_align; | |
202 | ||
203 | #ifndef NO_LISTING | |
204 | #ifdef OBJ_ELF | |
205 | /* This variable is set to be non-zero if the next string we see might | |
206 | be the name of the source file in DWARF debugging information. See | |
207 | the comment in emit_expr for the format we look for. */ | |
208 | static int dwarf_file_string; | |
209 | #endif | |
210 | #endif | |
211 | ||
87c245cc | 212 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd KH |
213 | static void do_align (int, char *, int, int); |
214 | static void s_align (int, int); | |
caa32fe5 | 215 | static void s_altmacro (int); |
057f53c1 | 216 | static void s_bad_end (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 RH |
332 | {"appfile", s_app_file, 1}, |
333 | {"appline", s_app_line, 0}, | |
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. */ |
252b5132 | 368 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 369 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
370 | {"llen", listing_psize, 1}, |
371 | {"long", cons, 4}, | |
372 | {"lsym", s_lsym, 0}, | |
373 | {"macro", s_macro, 0}, | |
374 | {"mexit", s_mexit, 0}, | |
375 | {"mri", s_mri, 0}, | |
376 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
377 | {"name", s_ignore, 0}, | |
caa32fe5 | 378 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 379 | {"noformat", s_ignore, 0}, |
041ff4dd | 380 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
381 | {"nopage", listing_nopage, 0}, |
382 | {"octa", cons, 16}, | |
383 | {"offset", s_struct, 0}, | |
384 | {"org", s_org, 0}, | |
385 | {"p2align", s_align_ptwo, 0}, | |
386 | {"p2alignw", s_align_ptwo, -2}, | |
387 | {"p2alignl", s_align_ptwo, -4}, | |
388 | {"page", listing_eject, 0}, | |
389 | {"plen", listing_psize, 0}, | |
390 | {"print", s_print, 0}, | |
041ff4dd | 391 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
392 | {"purgem", s_purgem, 0}, |
393 | {"quad", cons, 8}, | |
394 | {"rep", s_rept, 0}, | |
395 | {"rept", s_rept, 0}, | |
396 | {"rva", s_rva, 4}, | |
041ff4dd NC |
397 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
398 | /* scl */ | |
399 | /* sect */ | |
252b5132 RH |
400 | {"set", s_set, 0}, |
401 | {"short", cons, 2}, | |
402 | {"single", float_cons, 'f'}, | |
041ff4dd | 403 | /* size */ |
252b5132 RH |
404 | {"space", s_space, 0}, |
405 | {"skip", s_space, 0}, | |
406 | {"sleb128", s_leb128, 1}, | |
407 | {"spc", s_ignore, 0}, | |
408 | {"stabd", s_stab, 'd'}, | |
409 | {"stabn", s_stab, 'n'}, | |
410 | {"stabs", s_stab, 's'}, | |
411 | {"string", stringer, 1}, | |
412 | {"struct", s_struct, 0}, | |
041ff4dd | 413 | /* tag */ |
252b5132 RH |
414 | {"text", s_text, 0}, |
415 | ||
416 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
417 | won't be able to use it for a while -- probably a year or more. | |
418 | But once this has been released, check with gcc maintainers | |
419 | before deleting it or even changing the spelling. */ | |
420 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
421 | /* If we're folding case -- done for some targets, not necessarily | |
422 | all -- the above string in an input file will be converted to | |
423 | this one. Match it either way... */ | |
424 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
425 | ||
041ff4dd | 426 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 427 | {"ttl", listing_title, 0}, |
041ff4dd | 428 | /* type */ |
252b5132 | 429 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
430 | /* use */ |
431 | /* val */ | |
252b5132 RH |
432 | {"xcom", s_comm, 0}, |
433 | {"xdef", s_globl, 0}, | |
434 | {"xref", s_ignore, 0}, | |
435 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 436 | {"warning", s_errwarn, 0}, |
06e77878 | 437 | {"weakref", s_weakref, 0}, |
252b5132 RH |
438 | {"word", cons, 2}, |
439 | {"zero", s_space, 0}, | |
041ff4dd | 440 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
441 | }; |
442 | ||
87c245cc BE |
443 | static offsetT |
444 | get_absolute_expr (expressionS *exp) | |
445 | { | |
9497f5ac | 446 | expression_and_evaluate (exp); |
87c245cc BE |
447 | if (exp->X_op != O_constant) |
448 | { | |
449 | if (exp->X_op != O_absent) | |
450 | as_bad (_("bad or irreducible absolute expression")); | |
451 | exp->X_add_number = 0; | |
452 | } | |
453 | return exp->X_add_number; | |
454 | } | |
455 | ||
456 | offsetT | |
457 | get_absolute_expression (void) | |
458 | { | |
459 | expressionS exp; | |
460 | ||
461 | return get_absolute_expr (&exp); | |
462 | } | |
463 | ||
252b5132 RH |
464 | static int pop_override_ok = 0; |
465 | static const char *pop_table_name; | |
466 | ||
467 | void | |
39e6acbd | 468 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
469 | { |
470 | const char *errtxt; | |
471 | const pseudo_typeS *pop; | |
472 | for (pop = table; pop->poc_name; pop++) | |
473 | { | |
474 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
475 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
476 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
477 | errtxt); | |
478 | } | |
479 | } | |
480 | ||
481 | #ifndef md_pop_insert | |
482 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
483 | #endif | |
484 | ||
485 | #ifndef obj_pop_insert | |
486 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
487 | #endif | |
488 | ||
54cfded0 AM |
489 | #ifndef cfi_pop_insert |
490 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
491 | #endif | |
492 | ||
041ff4dd | 493 | static void |
39e6acbd | 494 | pobegin (void) |
252b5132 RH |
495 | { |
496 | po_hash = hash_new (); | |
497 | ||
041ff4dd | 498 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
499 | pop_table_name = "md"; |
500 | md_pop_insert (); | |
501 | ||
041ff4dd | 502 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
503 | pop_table_name = "obj"; |
504 | pop_override_ok = 1; | |
505 | obj_pop_insert (); | |
506 | ||
041ff4dd | 507 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
508 | pop_table_name = "standard"; |
509 | pop_insert (potable); | |
d6415f6c | 510 | |
54cfded0 AM |
511 | #ifdef TARGET_USE_CFIPOP |
512 | pop_table_name = "cfi"; | |
513 | pop_override_ok = 1; | |
514 | cfi_pop_insert (); | |
515 | #endif | |
252b5132 RH |
516 | } |
517 | \f | |
518 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
519 | if (ignore_input ()) \ | |
520 | { \ | |
40a4d956 JB |
521 | char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \ |
522 | input_line_pointer = (input_line_pointer <= buffer_limit \ | |
523 | && eol >= buffer_limit) \ | |
524 | ? buffer_limit \ | |
525 | : eol + 1; \ | |
252b5132 RH |
526 | continue; \ |
527 | } | |
528 | ||
252b5132 RH |
529 | /* This function is used when scrubbing the characters between #APP |
530 | and #NO_APP. */ | |
531 | ||
532 | static char *scrub_string; | |
533 | static char *scrub_string_end; | |
534 | ||
535 | static int | |
39e6acbd | 536 | scrub_from_string (char *buf, int buflen) |
252b5132 | 537 | { |
2b47531b ILT |
538 | int copy; |
539 | ||
540 | copy = scrub_string_end - scrub_string; | |
541 | if (copy > buflen) | |
542 | copy = buflen; | |
543 | memcpy (buf, scrub_string, copy); | |
544 | scrub_string += copy; | |
545 | return copy; | |
252b5132 RH |
546 | } |
547 | ||
5e75c3ab JB |
548 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
549 | static int | |
550 | try_macro (char term, const char *line) | |
551 | { | |
552 | sb out; | |
553 | const char *err; | |
554 | macro_entry *macro; | |
555 | ||
556 | if (check_macro (line, &out, &err, ¯o)) | |
557 | { | |
558 | if (err != NULL) | |
559 | as_bad ("%s", err); | |
560 | *input_line_pointer++ = term; | |
561 | input_scrub_include_sb (&out, | |
562 | input_line_pointer, 1); | |
563 | sb_kill (&out); | |
564 | buffer_limit = | |
565 | input_scrub_next_buffer (&input_line_pointer); | |
566 | #ifdef md_macro_info | |
567 | md_macro_info (macro); | |
568 | #endif | |
569 | return 1; | |
570 | } | |
571 | return 0; | |
572 | } | |
573 | ||
041ff4dd NC |
574 | /* We read the file, putting things into a web that represents what we |
575 | have been reading. */ | |
576 | void | |
39e6acbd | 577 | read_a_source_file (char *name) |
252b5132 RH |
578 | { |
579 | register char c; | |
041ff4dd | 580 | register char *s; /* String of symbol, '\0' appended. */ |
252b5132 RH |
581 | register int temp; |
582 | pseudo_typeS *pop; | |
583 | ||
4c400d5e AM |
584 | #ifdef WARN_COMMENTS |
585 | found_comment = 0; | |
586 | #endif | |
587 | ||
252b5132 RH |
588 | buffer = input_scrub_new_file (name); |
589 | ||
590 | listing_file (name); | |
591 | listing_newline (NULL); | |
592 | register_dependency (name); | |
593 | ||
594 | /* Generate debugging information before we've read anything in to denote | |
595 | this file as the "main" source file and not a subordinate one | |
596 | (e.g. N_SO vs N_SOL in stabs). */ | |
597 | generate_file_debug (); | |
598 | ||
599 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 600 | { /* We have another line to parse. */ |
5e75c3ab JB |
601 | #ifndef NO_LISTING |
602 | /* In order to avoid listing macro expansion lines with labels | |
603 | multiple times, keep track of which line was last issued. */ | |
604 | static char *last_eol; | |
605 | ||
606 | last_eol = NULL; | |
607 | #endif | |
041ff4dd | 608 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ |
64e55042 | 609 | |
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. | |
698 | Each test is independent of all other tests at the (top) level. | |
699 | PLEASE make a compiler that doesn't use this assembler. | |
700 | It is crufty to waste a compiler's time encoding things for this | |
701 | assembler, which then wastes more time decoding it. | |
702 | (And communicating via (linear) files is silly! | |
703 | If you must pass stuff, please pass a tree!) */ | |
252b5132 RH |
704 | if ((c = *input_line_pointer++) == '\t' |
705 | || c == ' ' | |
706 | || c == '\f' | |
707 | || c == 0) | |
041ff4dd NC |
708 | c = *input_line_pointer++; |
709 | ||
710 | know (c != ' '); /* No further leading whitespace. */ | |
252b5132 RH |
711 | |
712 | #ifndef NO_LISTING | |
713 | /* If listing is on, and we are expanding a macro, then give | |
714 | the listing code the contents of the expanded line. */ | |
715 | if (listing) | |
716 | { | |
717 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
718 | { | |
719 | char *copy; | |
720 | int len; | |
721 | ||
722 | /* Find the end of the current expanded macro line. */ | |
40a4d956 | 723 | s = find_end_of_line (input_line_pointer - 1, flag_m68k_mri); |
252b5132 | 724 | |
5e75c3ab JB |
725 | if (s != last_eol) |
726 | { | |
727 | last_eol = s; | |
728 | /* Copy it for safe keeping. Also give an indication of | |
729 | how much macro nesting is involved at this point. */ | |
730 | len = s - (input_line_pointer - 1); | |
731 | copy = (char *) xmalloc (len + macro_nest + 2); | |
732 | memset (copy, '>', macro_nest); | |
733 | copy[macro_nest] = ' '; | |
734 | memcpy (copy + macro_nest + 1, input_line_pointer - 1, len); | |
735 | copy[macro_nest + 1 + len] = '\0'; | |
736 | ||
737 | /* Install the line with the listing facility. */ | |
738 | listing_newline (copy); | |
739 | } | |
252b5132 RH |
740 | } |
741 | else | |
742 | listing_newline (NULL); | |
743 | } | |
744 | #endif | |
041ff4dd NC |
745 | /* C is the 1st significant character. |
746 | Input_line_pointer points after that character. */ | |
252b5132 RH |
747 | if (is_name_beginner (c)) |
748 | { | |
041ff4dd | 749 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
750 | HANDLE_CONDITIONAL_ASSEMBLY (); |
751 | ||
752 | s = --input_line_pointer; | |
041ff4dd NC |
753 | c = get_symbol_end (); /* name's delimiter. */ |
754 | ||
755 | /* C is character after symbol. | |
d6415f6c AM |
756 | That character's place in the input line is now '\0'. |
757 | S points to the beginning of the symbol. | |
758 | [In case of pseudo-op, s->'.'.] | |
759 | Input_line_pointer->'\0' where c was. */ | |
041ff4dd | 760 | if (TC_START_LABEL (c, input_line_pointer)) |
252b5132 RH |
761 | { |
762 | if (flag_m68k_mri) | |
763 | { | |
764 | char *rest = input_line_pointer + 1; | |
765 | ||
766 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
767 | if (*rest == ':') |
768 | ++rest; | |
f0e652b4 | 769 | |
252b5132 RH |
770 | if (*rest == ' ' || *rest == '\t') |
771 | ++rest; | |
f0e652b4 | 772 | |
252b5132 RH |
773 | if ((strncasecmp (rest, "EQU", 3) == 0 |
774 | || strncasecmp (rest, "SET", 3) == 0) | |
775 | && (rest[3] == ' ' || rest[3] == '\t')) | |
776 | { | |
777 | input_line_pointer = rest + 3; | |
778 | equals (s, 1); | |
779 | continue; | |
780 | } | |
781 | } | |
782 | ||
041ff4dd NC |
783 | line_label = colon (s); /* User-defined label. */ |
784 | /* Put ':' back for error messages' sake. */ | |
785 | *input_line_pointer++ = ':'; | |
a645d1eb L |
786 | #ifdef tc_check_label |
787 | tc_check_label (line_label); | |
788 | #endif | |
041ff4dd | 789 | /* Input_line_pointer->after ':'. */ |
252b5132 | 790 | SKIP_WHITESPACE (); |
252b5132 | 791 | } |
9497f5ac NC |
792 | else if (input_line_pointer[1] == '=' |
793 | && (c == '=' | |
794 | || ((c == ' ' || c == '\t') | |
795 | && input_line_pointer[2] == '='))) | |
796 | { | |
797 | equals (s, -1); | |
798 | demand_empty_rest_of_line (); | |
799 | } | |
ee3c9814 CM |
800 | else if ((c == '=' |
801 | || ((c == ' ' || c == '\t') | |
802 | && input_line_pointer[1] == '=')) | |
803 | #ifdef TC_EQUAL_IN_INSN | |
804 | && !TC_EQUAL_IN_INSN (c, s) | |
805 | #endif | |
806 | ) | |
252b5132 RH |
807 | { |
808 | equals (s, 1); | |
809 | demand_empty_rest_of_line (); | |
810 | } | |
811 | else | |
041ff4dd NC |
812 | { |
813 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
814 | pop = NULL; |
815 | ||
a8a3b3b2 | 816 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
817 | { |
818 | char *s2 = s; | |
37d8bb27 NC |
819 | |
820 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
821 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 822 | |
252b5132 RH |
823 | while (*s2) |
824 | { | |
3882b010 | 825 | *s2 = TOLOWER (*s2); |
252b5132 RH |
826 | s2++; |
827 | } | |
828 | } | |
829 | #endif | |
abd63a32 | 830 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 831 | { |
7be1c489 AM |
832 | /* The MRI assembler uses pseudo-ops without |
833 | a period. */ | |
252b5132 RH |
834 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
835 | if (pop != NULL && pop->poc_handler == NULL) | |
836 | pop = NULL; | |
837 | } | |
838 | ||
839 | if (pop != NULL | |
041ff4dd | 840 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 841 | { |
041ff4dd | 842 | /* PSEUDO - OP. |
f0e652b4 | 843 | |
d6415f6c AM |
844 | WARNING: c has next char, which may be end-of-line. |
845 | We lookup the pseudo-op table with s+1 because we | |
846 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
847 | |
848 | if (pop == NULL) | |
849 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
850 | if (pop && !pop->poc_handler) |
851 | pop = NULL; | |
252b5132 RH |
852 | |
853 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
854 | automatic alignment directive. What a hack |
855 | this is. */ | |
252b5132 RH |
856 | if (mri_pending_align |
857 | && (pop == NULL | |
041ff4dd NC |
858 | || !((pop->poc_handler == cons |
859 | && pop->poc_val == 1) | |
860 | || (pop->poc_handler == s_space | |
861 | && pop->poc_val == 1) | |
252b5132 | 862 | #ifdef tc_conditional_pseudoop |
041ff4dd | 863 | || tc_conditional_pseudoop (pop) |
252b5132 | 864 | #endif |
041ff4dd NC |
865 | || pop->poc_handler == s_if |
866 | || pop->poc_handler == s_ifdef | |
867 | || pop->poc_handler == s_ifc | |
868 | || pop->poc_handler == s_ifeqs | |
869 | || pop->poc_handler == s_else | |
870 | || pop->poc_handler == s_endif | |
871 | || pop->poc_handler == s_globl | |
872 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
873 | { |
874 | do_align (1, (char *) NULL, 0, 0); | |
875 | mri_pending_align = 0; | |
f0e652b4 | 876 | |
252b5132 RH |
877 | if (line_label != NULL) |
878 | { | |
2b47531b | 879 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
880 | S_SET_VALUE (line_label, frag_now_fix ()); |
881 | } | |
882 | } | |
883 | ||
041ff4dd | 884 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
885 | if (pop == NULL) |
886 | { | |
5e75c3ab JB |
887 | char *end = input_line_pointer; |
888 | ||
252b5132 RH |
889 | *input_line_pointer = c; |
890 | s_ignore (0); | |
5e75c3ab JB |
891 | c = *--input_line_pointer; |
892 | *input_line_pointer = '\0'; | |
893 | if (! macro_defined || ! try_macro (c, s)) | |
894 | { | |
895 | *end = '\0'; | |
896 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
897 | *input_line_pointer++ = c; | |
898 | } | |
252b5132 RH |
899 | continue; |
900 | } | |
901 | ||
041ff4dd | 902 | /* Put it back for error messages etc. */ |
252b5132 RH |
903 | *input_line_pointer = c; |
904 | /* The following skip of whitespace is compulsory. | |
905 | A well shaped space is sometimes all that separates | |
041ff4dd | 906 | keyword from operands. */ |
252b5132 RH |
907 | if (c == ' ' || c == '\t') |
908 | input_line_pointer++; | |
041ff4dd NC |
909 | |
910 | /* Input_line is restored. | |
d6415f6c AM |
911 | Input_line_pointer->1st non-blank char |
912 | after pseudo-operation. */ | |
252b5132 RH |
913 | (*pop->poc_handler) (pop->poc_val); |
914 | ||
915 | /* If that was .end, just get out now. */ | |
916 | if (pop->poc_handler == s_end) | |
917 | goto quit; | |
918 | } | |
919 | else | |
920 | { | |
041ff4dd NC |
921 | /* WARNING: c has char, which may be end-of-line. */ |
922 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 | 923 | *input_line_pointer = c; |
40a4d956 | 924 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1); |
252b5132 RH |
925 | c = *input_line_pointer; |
926 | *input_line_pointer = '\0'; | |
927 | ||
928 | generate_lineno_debug (); | |
929 | ||
5e75c3ab JB |
930 | if (macro_defined && try_macro (c, s)) |
931 | continue; | |
252b5132 RH |
932 | |
933 | if (mri_pending_align) | |
934 | { | |
935 | do_align (1, (char *) NULL, 0, 0); | |
936 | mri_pending_align = 0; | |
937 | if (line_label != NULL) | |
938 | { | |
2b47531b | 939 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
940 | S_SET_VALUE (line_label, frag_now_fix ()); |
941 | } | |
942 | } | |
943 | ||
041ff4dd | 944 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
945 | |
946 | *input_line_pointer++ = c; | |
947 | ||
948 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
949 | this instruction. */ |
950 | } | |
951 | } | |
252b5132 | 952 | continue; |
041ff4dd | 953 | } |
252b5132 RH |
954 | |
955 | /* Empty statement? */ | |
956 | if (is_end_of_line[(unsigned char) c]) | |
957 | continue; | |
958 | ||
3882b010 | 959 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 960 | { |
041ff4dd | 961 | /* local label ("4:") */ |
252b5132 RH |
962 | char *backup = input_line_pointer; |
963 | ||
964 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
965 | ||
966 | temp = c - '0'; | |
967 | ||
041ff4dd | 968 | /* Read the whole number. */ |
3882b010 | 969 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
970 | { |
971 | temp = (temp * 10) + *input_line_pointer - '0'; | |
972 | ++input_line_pointer; | |
041ff4dd | 973 | } |
252b5132 RH |
974 | |
975 | if (LOCAL_LABELS_DOLLAR | |
976 | && *input_line_pointer == '$' | |
977 | && *(input_line_pointer + 1) == ':') | |
978 | { | |
979 | input_line_pointer += 2; | |
980 | ||
981 | if (dollar_label_defined (temp)) | |
982 | { | |
983 | as_fatal (_("label \"%d$\" redefined"), temp); | |
984 | } | |
985 | ||
986 | define_dollar_label (temp); | |
987 | colon (dollar_label_name (temp, 0)); | |
988 | continue; | |
989 | } | |
990 | ||
991 | if (LOCAL_LABELS_FB | |
992 | && *input_line_pointer++ == ':') | |
993 | { | |
994 | fb_label_instance_inc (temp); | |
995 | colon (fb_label_name (temp, 0)); | |
996 | continue; | |
997 | } | |
998 | ||
999 | input_line_pointer = backup; | |
1000 | } /* local label ("4:") */ | |
1001 | ||
1002 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 1003 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1004 | sb sbuf; |
252b5132 RH |
1005 | char *ends; |
1006 | char *new_buf; | |
1007 | char *new_tmp; | |
1008 | unsigned int new_length; | |
1009 | char *tmp_buf = 0; | |
1010 | ||
1011 | bump_line_counters (); | |
1012 | s = input_line_pointer; | |
1013 | if (strncmp (s, "APP\n", 4)) | |
1014 | continue; /* We ignore it */ | |
1015 | s += 4; | |
1016 | ||
64e55042 | 1017 | sb_new (&sbuf); |
252b5132 RH |
1018 | ends = strstr (s, "#NO_APP\n"); |
1019 | ||
1020 | if (!ends) | |
1021 | { | |
1022 | unsigned int tmp_len; | |
1023 | unsigned int num; | |
1024 | ||
1025 | /* The end of the #APP wasn't in this buffer. We | |
1026 | keep reading in buffers until we find the #NO_APP | |
1027 | that goes with this #APP There is one. The specs | |
47eebc20 | 1028 | guarantee it... */ |
252b5132 RH |
1029 | tmp_len = buffer_limit - s; |
1030 | tmp_buf = xmalloc (tmp_len + 1); | |
1031 | memcpy (tmp_buf, s, tmp_len); | |
1032 | do | |
1033 | { | |
1034 | new_tmp = input_scrub_next_buffer (&buffer); | |
1035 | if (!new_tmp) | |
1036 | break; | |
1037 | else | |
1038 | buffer_limit = new_tmp; | |
1039 | input_line_pointer = buffer; | |
1040 | ends = strstr (buffer, "#NO_APP\n"); | |
1041 | if (ends) | |
1042 | num = ends - buffer; | |
1043 | else | |
1044 | num = buffer_limit - buffer; | |
1045 | ||
1046 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
1047 | memcpy (tmp_buf + tmp_len, buffer, num); | |
1048 | tmp_len += num; | |
1049 | } | |
1050 | while (!ends); | |
1051 | ||
1052 | input_line_pointer = ends ? ends + 8 : NULL; | |
1053 | ||
1054 | s = tmp_buf; | |
1055 | ends = s + tmp_len; | |
1056 | ||
1057 | } | |
1058 | else | |
1059 | { | |
1060 | input_line_pointer = ends + 8; | |
1061 | } | |
1062 | ||
1063 | scrub_string = s; | |
1064 | scrub_string_end = ends; | |
1065 | ||
1066 | new_length = ends - s; | |
1067 | new_buf = (char *) xmalloc (new_length); | |
1068 | new_tmp = new_buf; | |
1069 | for (;;) | |
1070 | { | |
1071 | int space; | |
1072 | int size; | |
1073 | ||
1074 | space = (new_buf + new_length) - new_tmp; | |
1075 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1076 | ||
1077 | if (size < space) | |
1078 | { | |
64e55042 | 1079 | new_tmp[size] = 0; |
252b5132 RH |
1080 | break; |
1081 | } | |
1082 | ||
1083 | new_buf = xrealloc (new_buf, new_length + 100); | |
1084 | new_tmp = new_buf + new_length; | |
1085 | new_length += 100; | |
1086 | } | |
1087 | ||
1088 | if (tmp_buf) | |
1089 | free (tmp_buf); | |
f0e652b4 | 1090 | |
64e55042 HPN |
1091 | /* We've "scrubbed" input to the preferred format. In the |
1092 | process we may have consumed the whole of the remaining | |
1093 | file (and included files). We handle this formatted | |
1094 | input similar to that of macro expansion, letting | |
1095 | actual macro expansion (possibly nested) and other | |
1096 | input expansion work. Beware that in messages, line | |
1097 | numbers and possibly file names will be incorrect. */ | |
1098 | sb_add_string (&sbuf, new_buf); | |
1099 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); | |
1100 | sb_kill (&sbuf); | |
1101 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1102 | free (new_buf); | |
252b5132 RH |
1103 | continue; |
1104 | } | |
1105 | ||
1106 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1107 | ||
1108 | #ifdef tc_unrecognized_line | |
1109 | if (tc_unrecognized_line (c)) | |
1110 | continue; | |
1111 | #endif | |
0e389e77 AM |
1112 | input_line_pointer--; |
1113 | /* Report unknown char as ignored. */ | |
c95b35a9 | 1114 | demand_empty_rest_of_line (); |
041ff4dd | 1115 | } |
252b5132 RH |
1116 | |
1117 | #ifdef md_after_pass_hook | |
1118 | md_after_pass_hook (); | |
1119 | #endif | |
041ff4dd | 1120 | } |
252b5132 RH |
1121 | |
1122 | quit: | |
1123 | ||
1124 | #ifdef md_cleanup | |
041ff4dd | 1125 | md_cleanup (); |
252b5132 | 1126 | #endif |
041ff4dd NC |
1127 | /* Close the input file. */ |
1128 | input_scrub_close (); | |
4c400d5e AM |
1129 | #ifdef WARN_COMMENTS |
1130 | { | |
1131 | if (warn_comment && found_comment) | |
1132 | as_warn_where (found_comment_file, found_comment, | |
1133 | "first comment found here"); | |
1134 | } | |
1135 | #endif | |
252b5132 RH |
1136 | } |
1137 | ||
e5604d79 RS |
1138 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
1139 | Take the sign of the number from X_unsigned rather than X_add_number. */ | |
1140 | ||
1141 | static void | |
1142 | convert_to_bignum (expressionS *exp) | |
1143 | { | |
1144 | valueT value; | |
1145 | unsigned int i; | |
1146 | ||
1147 | value = exp->X_add_number; | |
1148 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1149 | { | |
1150 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1151 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1152 | } | |
1153 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1154 | the sign of the original value. */ | |
1155 | if ((exp->X_add_number < 0) != !exp->X_unsigned) | |
1156 | generic_bignum[i++] = exp->X_unsigned ? 0 : LITTLENUM_MASK; | |
1157 | exp->X_op = O_big; | |
1158 | exp->X_add_number = i; | |
1159 | } | |
1160 | ||
252b5132 RH |
1161 | /* For most MRI pseudo-ops, the line actually ends at the first |
1162 | nonquoted space. This function looks for that point, stuffs a null | |
1163 | in, and sets *STOPCP to the character that used to be there, and | |
1164 | returns the location. | |
1165 | ||
1166 | Until I hear otherwise, I am going to assume that this is only true | |
1167 | for the m68k MRI assembler. */ | |
1168 | ||
1169 | char * | |
39e6acbd | 1170 | mri_comment_field (char *stopcp) |
252b5132 | 1171 | { |
252b5132 | 1172 | char *s; |
041ff4dd | 1173 | #ifdef TC_M68K |
252b5132 RH |
1174 | int inquote = 0; |
1175 | ||
1176 | know (flag_m68k_mri); | |
1177 | ||
1178 | for (s = input_line_pointer; | |
041ff4dd | 1179 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1180 | || inquote); |
1181 | s++) | |
1182 | { | |
1183 | if (*s == '\'') | |
041ff4dd | 1184 | inquote = !inquote; |
252b5132 | 1185 | } |
252b5132 | 1186 | #else |
041ff4dd NC |
1187 | for (s = input_line_pointer; |
1188 | !is_end_of_line[(unsigned char) *s]; | |
1189 | s++) | |
252b5132 | 1190 | ; |
041ff4dd | 1191 | #endif |
252b5132 RH |
1192 | *stopcp = *s; |
1193 | *s = '\0'; | |
f0e652b4 | 1194 | |
252b5132 | 1195 | return s; |
252b5132 RH |
1196 | } |
1197 | ||
1198 | /* Skip to the end of an MRI comment field. */ | |
1199 | ||
1200 | void | |
39e6acbd | 1201 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1202 | { |
1203 | know (flag_mri); | |
1204 | ||
1205 | input_line_pointer = stop; | |
1206 | *stop = stopc; | |
041ff4dd | 1207 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1208 | ++input_line_pointer; |
1209 | } | |
1210 | ||
041ff4dd | 1211 | void |
39e6acbd | 1212 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1213 | { |
1214 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1215 | } | |
1216 | ||
1217 | /* Guts of .align directive. N is the power of two to which to align. | |
1218 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1219 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1220 | the maximum number of characters to skip when doing the alignment, | |
1221 | or 0 if there is no maximum. */ | |
1222 | ||
041ff4dd | 1223 | static void |
39e6acbd | 1224 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1225 | { |
ebeb9253 AM |
1226 | if (now_seg == absolute_section) |
1227 | { | |
1228 | if (fill != NULL) | |
1229 | while (len-- > 0) | |
1230 | if (*fill++ != '\0') | |
1231 | { | |
1232 | as_warn (_("ignoring fill value in absolute section")); | |
1233 | break; | |
1234 | } | |
1235 | fill = NULL; | |
1236 | len = 0; | |
1237 | } | |
1238 | ||
b8861cfb NS |
1239 | #ifdef md_flush_pending_output |
1240 | md_flush_pending_output (); | |
1241 | #endif | |
252b5132 RH |
1242 | #ifdef md_do_align |
1243 | md_do_align (n, fill, len, max, just_record_alignment); | |
1244 | #endif | |
1245 | ||
041ff4dd | 1246 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1247 | if (n != 0 && !need_pass_2) |
1248 | { | |
0a9ef439 RH |
1249 | if (fill == NULL) |
1250 | { | |
1251 | if (subseg_text_p (now_seg)) | |
1252 | frag_align_code (n, max); | |
1253 | else | |
1254 | frag_align (n, 0, max); | |
1255 | } | |
1256 | else if (len <= 1) | |
252b5132 RH |
1257 | frag_align (n, *fill, max); |
1258 | else | |
1259 | frag_align_pattern (n, fill, len, max); | |
1260 | } | |
1261 | ||
1262 | #ifdef md_do_align | |
a6bd2a4f | 1263 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1264 | #endif |
1265 | ||
bea9907b | 1266 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1267 | } |
1268 | ||
1269 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1270 | (in bytes). A negative ARG is the negative of the length of the | |
1271 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1272 | interpreted as the byte boundary, rather than the power of 2. */ | |
1273 | ||
9ebd302d | 1274 | #define ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) |
9ebd302d | 1275 | |
252b5132 | 1276 | static void |
39e6acbd | 1277 | s_align (int arg, int bytes_p) |
252b5132 | 1278 | { |
b617dc20 | 1279 | unsigned int align_limit = ALIGN_LIMIT; |
9ebd302d | 1280 | unsigned int align; |
252b5132 RH |
1281 | char *stop = NULL; |
1282 | char stopc; | |
1283 | offsetT fill = 0; | |
1284 | int max; | |
1285 | int fill_p; | |
1286 | ||
1287 | if (flag_mri) | |
1288 | stop = mri_comment_field (&stopc); | |
1289 | ||
1290 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1291 | { | |
1292 | if (arg < 0) | |
1293 | align = 0; | |
1294 | else | |
041ff4dd | 1295 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1296 | } |
1297 | else | |
1298 | { | |
1299 | align = get_absolute_expression (); | |
1300 | SKIP_WHITESPACE (); | |
1301 | } | |
1302 | ||
1303 | if (bytes_p) | |
1304 | { | |
1305 | /* Convert to a power of 2. */ | |
1306 | if (align != 0) | |
1307 | { | |
1308 | unsigned int i; | |
1309 | ||
1310 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1311 | ; | |
1312 | if (align != 1) | |
0e389e77 | 1313 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1314 | |
252b5132 RH |
1315 | align = i; |
1316 | } | |
1317 | } | |
1318 | ||
b617dc20 | 1319 | if (align > align_limit) |
252b5132 | 1320 | { |
b617dc20 | 1321 | align = align_limit; |
0e389e77 | 1322 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1323 | } |
1324 | ||
1325 | if (*input_line_pointer != ',') | |
1326 | { | |
1327 | fill_p = 0; | |
1328 | max = 0; | |
1329 | } | |
1330 | else | |
1331 | { | |
1332 | ++input_line_pointer; | |
1333 | if (*input_line_pointer == ',') | |
1334 | fill_p = 0; | |
1335 | else | |
1336 | { | |
1337 | fill = get_absolute_expression (); | |
1338 | SKIP_WHITESPACE (); | |
1339 | fill_p = 1; | |
1340 | } | |
1341 | ||
1342 | if (*input_line_pointer != ',') | |
1343 | max = 0; | |
1344 | else | |
1345 | { | |
1346 | ++input_line_pointer; | |
1347 | max = get_absolute_expression (); | |
1348 | } | |
1349 | } | |
1350 | ||
041ff4dd | 1351 | if (!fill_p) |
252b5132 RH |
1352 | { |
1353 | if (arg < 0) | |
1354 | as_warn (_("expected fill pattern missing")); | |
1355 | do_align (align, (char *) NULL, 0, max); | |
1356 | } | |
1357 | else | |
1358 | { | |
1359 | int fill_len; | |
1360 | ||
1361 | if (arg >= 0) | |
1362 | fill_len = 1; | |
1363 | else | |
041ff4dd | 1364 | fill_len = -arg; |
252b5132 RH |
1365 | if (fill_len <= 1) |
1366 | { | |
1367 | char fill_char; | |
1368 | ||
1369 | fill_char = fill; | |
1370 | do_align (align, &fill_char, fill_len, max); | |
1371 | } | |
1372 | else | |
1373 | { | |
1374 | char ab[16]; | |
1375 | ||
1376 | if ((size_t) fill_len > sizeof ab) | |
1377 | abort (); | |
1378 | md_number_to_chars (ab, fill, fill_len); | |
1379 | do_align (align, ab, fill_len, max); | |
1380 | } | |
1381 | } | |
1382 | ||
1383 | demand_empty_rest_of_line (); | |
1384 | ||
1385 | if (flag_mri) | |
1386 | mri_comment_end (stop, stopc); | |
1387 | } | |
1388 | ||
1389 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1390 | align to a 4 byte boundary. */ | |
1391 | ||
041ff4dd | 1392 | void |
39e6acbd | 1393 | s_align_bytes (int arg) |
252b5132 RH |
1394 | { |
1395 | s_align (arg, 1); | |
1396 | } | |
1397 | ||
1398 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1399 | to a 2**4 boundary. */ | |
1400 | ||
041ff4dd | 1401 | void |
39e6acbd | 1402 | s_align_ptwo (int arg) |
252b5132 RH |
1403 | { |
1404 | s_align (arg, 0); | |
1405 | } | |
1406 | ||
caa32fe5 NC |
1407 | /* Switch in and out of alternate macro mode. */ |
1408 | ||
1409 | void | |
1410 | s_altmacro (int on) | |
1411 | { | |
1412 | demand_empty_rest_of_line (); | |
1413 | macro_set_alternate (on); | |
1414 | } | |
1415 | ||
e13bab5a AM |
1416 | symbolS * |
1417 | s_comm_internal (int param, | |
1418 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1419 | { |
e13bab5a AM |
1420 | char *name; |
1421 | char c; | |
1422 | char *p; | |
1423 | offsetT temp, size; | |
1424 | symbolS *symbolP = NULL; | |
252b5132 RH |
1425 | char *stop = NULL; |
1426 | char stopc; | |
e13bab5a | 1427 | expressionS exp; |
252b5132 RH |
1428 | |
1429 | if (flag_mri) | |
1430 | stop = mri_comment_field (&stopc); | |
1431 | ||
1432 | name = input_line_pointer; | |
1433 | c = get_symbol_end (); | |
041ff4dd | 1434 | /* Just after name is now '\0'. */ |
252b5132 RH |
1435 | p = input_line_pointer; |
1436 | *p = c; | |
0e389e77 AM |
1437 | |
1438 | if (name == p) | |
1439 | { | |
1440 | as_bad (_("expected symbol name")); | |
40a4d956 | 1441 | ignore_rest_of_line (); |
e13bab5a | 1442 | goto out; |
0e389e77 AM |
1443 | } |
1444 | ||
252b5132 | 1445 | SKIP_WHITESPACE (); |
f0e652b4 | 1446 | |
e13bab5a AM |
1447 | /* Accept an optional comma after the name. The comma used to be |
1448 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1449 | if (*input_line_pointer == ',') | |
1450 | input_line_pointer++; | |
1451 | ||
e13bab5a AM |
1452 | temp = get_absolute_expr (&exp); |
1453 | size = temp; | |
e13bab5a | 1454 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1455 | if (exp.X_op == O_absent) |
252b5132 | 1456 | { |
e13bab5a | 1457 | as_bad (_("missing size expression")); |
252b5132 | 1458 | ignore_rest_of_line (); |
e13bab5a | 1459 | goto out; |
252b5132 | 1460 | } |
e13bab5a | 1461 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1462 | { |
e13bab5a | 1463 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1464 | ignore_rest_of_line (); |
e13bab5a | 1465 | goto out; |
252b5132 | 1466 | } |
f0e652b4 | 1467 | |
a207757e | 1468 | *p = 0; |
252b5132 | 1469 | symbolP = symbol_find_or_make (name); |
041ff4dd | 1470 | if (S_IS_DEFINED (symbolP) && !S_IS_COMMON (symbolP)) |
252b5132 | 1471 | { |
e13bab5a AM |
1472 | symbolP = NULL; |
1473 | as_bad (_("symbol `%s' is already defined"), name); | |
1474 | *p = c; | |
252b5132 | 1475 | ignore_rest_of_line (); |
e13bab5a | 1476 | goto out; |
252b5132 | 1477 | } |
f0e652b4 | 1478 | |
e13bab5a AM |
1479 | size = S_GET_VALUE (symbolP); |
1480 | if (size == 0) | |
1481 | size = temp; | |
1482 | else if (size != temp) | |
1483 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1484 | name, (long) size, (long) temp); | |
1485 | ||
1486 | *p = c; | |
1487 | if (comm_parse_extra != NULL) | |
1488 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1489 | else |
1490 | { | |
e13bab5a | 1491 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1492 | S_SET_EXTERNAL (symbolP); |
252b5132 | 1493 | #ifdef OBJ_VMS |
e13bab5a AM |
1494 | { |
1495 | extern int flag_one; | |
1496 | if (size == 0 || !flag_one) | |
1497 | S_GET_OTHER (symbolP) = const_flag; | |
1498 | } | |
1499 | #endif | |
1500 | } | |
252b5132 RH |
1501 | |
1502 | demand_empty_rest_of_line (); | |
e13bab5a | 1503 | out: |
252b5132 RH |
1504 | if (flag_mri) |
1505 | mri_comment_end (stop, stopc); | |
e13bab5a AM |
1506 | return symbolP; |
1507 | } | |
1508 | ||
1509 | void | |
1510 | s_comm (int ignore) | |
1511 | { | |
1512 | s_comm_internal (ignore, NULL); | |
1513 | } | |
252b5132 RH |
1514 | |
1515 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1516 | symbol with the appropriate name. We make s_space do the right | |
1517 | thing by increasing the size. */ | |
1518 | ||
1519 | void | |
39e6acbd | 1520 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1521 | { |
1522 | char *name; | |
1523 | char c; | |
1524 | char *alc = NULL; | |
1525 | symbolS *sym; | |
1526 | offsetT align; | |
1527 | char *stop = NULL; | |
1528 | char stopc; | |
1529 | ||
041ff4dd | 1530 | if (!flag_mri) |
252b5132 RH |
1531 | { |
1532 | s_comm (0); | |
1533 | return; | |
1534 | } | |
1535 | ||
1536 | stop = mri_comment_field (&stopc); | |
1537 | ||
1538 | SKIP_WHITESPACE (); | |
1539 | ||
1540 | name = input_line_pointer; | |
3882b010 | 1541 | if (!ISDIGIT (*name)) |
252b5132 RH |
1542 | c = get_symbol_end (); |
1543 | else | |
1544 | { | |
1545 | do | |
1546 | { | |
1547 | ++input_line_pointer; | |
1548 | } | |
3882b010 | 1549 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1550 | |
252b5132 RH |
1551 | c = *input_line_pointer; |
1552 | *input_line_pointer = '\0'; | |
1553 | ||
1554 | if (line_label != NULL) | |
1555 | { | |
1556 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1557 | + (input_line_pointer - name) | |
1558 | + 1); | |
1559 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1560 | name = alc; | |
1561 | } | |
1562 | } | |
1563 | ||
1564 | sym = symbol_find_or_make (name); | |
1565 | *input_line_pointer = c; | |
1566 | if (alc != NULL) | |
1567 | free (alc); | |
1568 | ||
1569 | if (*input_line_pointer != ',') | |
1570 | align = 0; | |
1571 | else | |
1572 | { | |
1573 | ++input_line_pointer; | |
1574 | align = get_absolute_expression (); | |
1575 | } | |
1576 | ||
041ff4dd | 1577 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1578 | { |
0e389e77 | 1579 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1580 | ignore_rest_of_line (); |
1581 | mri_comment_end (stop, stopc); | |
1582 | return; | |
1583 | } | |
1584 | ||
1585 | S_SET_EXTERNAL (sym); | |
1586 | mri_common_symbol = sym; | |
1587 | ||
1588 | #ifdef S_SET_ALIGN | |
1589 | if (align != 0) | |
1590 | S_SET_ALIGN (sym, align); | |
1591 | #endif | |
1592 | ||
1593 | if (line_label != NULL) | |
1594 | { | |
2b47531b ILT |
1595 | expressionS exp; |
1596 | exp.X_op = O_symbol; | |
1597 | exp.X_add_symbol = sym; | |
1598 | exp.X_add_number = 0; | |
1599 | symbol_set_value_expression (line_label, &exp); | |
1600 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1601 | S_SET_SEGMENT (line_label, expr_section); |
1602 | } | |
1603 | ||
1604 | /* FIXME: We just ignore the small argument, which distinguishes | |
1605 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1606 | ||
1607 | /* Ignore the type and hptype. */ | |
1608 | if (*input_line_pointer == ',') | |
1609 | input_line_pointer += 2; | |
1610 | if (*input_line_pointer == ',') | |
1611 | input_line_pointer += 2; | |
1612 | ||
1613 | demand_empty_rest_of_line (); | |
1614 | ||
1615 | mri_comment_end (stop, stopc); | |
1616 | } | |
1617 | ||
1618 | void | |
39e6acbd | 1619 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1620 | { |
1621 | segT section; | |
1622 | register int temp; | |
1623 | ||
1624 | temp = get_absolute_expression (); | |
1625 | if (flag_readonly_data_in_text) | |
1626 | { | |
1627 | section = text_section; | |
1628 | temp += 1000; | |
1629 | } | |
1630 | else | |
1631 | section = data_section; | |
1632 | ||
1633 | subseg_set (section, (subsegT) temp); | |
1634 | ||
1635 | #ifdef OBJ_VMS | |
1636 | const_flag = 0; | |
1637 | #endif | |
1638 | demand_empty_rest_of_line (); | |
1639 | } | |
1640 | ||
1641 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1642 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1643 | file name. This default definition may be overridden by the object | |
1644 | or CPU specific pseudo-ops. This function is also the default | |
1645 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1646 | .file. */ | |
1647 | ||
ecb4347a | 1648 | void |
f17c130b | 1649 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1650 | { |
1651 | #ifdef LISTING | |
1652 | if (listing) | |
1653 | listing_source_file (file); | |
1654 | #endif | |
1655 | register_dependency (file); | |
1656 | #ifdef obj_app_file | |
c04f5787 | 1657 | obj_app_file (file, appfile); |
ecb4347a DJ |
1658 | #endif |
1659 | } | |
1660 | ||
041ff4dd | 1661 | void |
39e6acbd | 1662 | s_app_file (int appfile) |
252b5132 RH |
1663 | { |
1664 | register char *s; | |
1665 | int length; | |
1666 | ||
041ff4dd | 1667 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1668 | if ((s = demand_copy_string (&length)) != 0) |
1669 | { | |
1670 | /* If this is a fake .appfile, a fake newline was inserted into | |
1671 | the buffer. Passing -2 to new_logical_line tells it to | |
1672 | account for it. */ | |
1673 | int may_omit | |
041ff4dd | 1674 | = (!new_logical_line (s, appfile ? -2 : -1) && appfile); |
252b5132 RH |
1675 | |
1676 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1677 | backquote. */ |
252b5132 RH |
1678 | if (flag_m68k_mri |
1679 | && *input_line_pointer == '\'' | |
1680 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1681 | ++input_line_pointer; | |
1682 | ||
1683 | demand_empty_rest_of_line (); | |
041ff4dd | 1684 | if (!may_omit) |
c04f5787 | 1685 | s_app_file_string (s, appfile); |
252b5132 RH |
1686 | } |
1687 | } | |
1688 | ||
1689 | /* Handle the .appline pseudo-op. This is automatically generated by | |
1690 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1691 | default definition may be overridden by the object or CPU specific | |
1692 | pseudo-ops. */ | |
1693 | ||
1694 | void | |
39e6acbd | 1695 | s_app_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1696 | { |
1697 | int l; | |
1698 | ||
1699 | /* The given number is that of the next line. */ | |
1700 | l = get_absolute_expression () - 1; | |
47837f8e NC |
1701 | |
1702 | if (l < -1) | |
252b5132 | 1703 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
1704 | Besides, it's silly. GCC however will generate a line number of |
1705 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
1706 | ||
1707 | # 0 "<built-in>" | |
1708 | ||
1709 | We do not want to barf on this, especially since such files are used | |
1710 | in the GCC and GDB testsuites. So we check for negative line numbers | |
1711 | rather than non-positive line numbers. */ | |
0e389e77 | 1712 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1713 | l + 1); |
252b5132 RH |
1714 | else |
1715 | { | |
1716 | new_logical_line ((char *) NULL, l); | |
1717 | #ifdef LISTING | |
1718 | if (listing) | |
1719 | listing_source_line (l); | |
1720 | #endif | |
1721 | } | |
1722 | demand_empty_rest_of_line (); | |
1723 | } | |
1724 | ||
1725 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1726 | read_a_source_file. */ | |
1727 | ||
1728 | void | |
39e6acbd | 1729 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1730 | { |
1731 | if (flag_mri) | |
1732 | { | |
1733 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 1734 | but we don't support that. */ |
252b5132 | 1735 | SKIP_WHITESPACE (); |
041ff4dd | 1736 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1737 | && *input_line_pointer != '*' |
1738 | && *input_line_pointer != '!') | |
1739 | as_warn (_("start address not supported")); | |
1740 | } | |
1741 | } | |
1742 | ||
1743 | /* Handle the .err pseudo-op. */ | |
1744 | ||
1745 | void | |
39e6acbd | 1746 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1747 | { |
1748 | as_bad (_(".err encountered")); | |
1749 | demand_empty_rest_of_line (); | |
d190d046 HPN |
1750 | } |
1751 | ||
1752 | /* Handle the .error and .warning pseudo-ops. */ | |
1753 | ||
1754 | void | |
1755 | s_errwarn (int err) | |
1756 | { | |
1757 | int len; | |
1758 | /* The purpose for the conditional assignment is not to | |
1759 | internationalize the directive itself, but that we need a | |
1760 | self-contained message, one that can be passed like the | |
1761 | demand_copy_C_string return value, and with no assumption on the | |
1762 | location of the name of the directive within the message. */ | |
1763 | char *msg | |
1764 | = (err ? _(".error directive invoked in source file") | |
1765 | : _(".warning directive invoked in source file")); | |
1766 | ||
1767 | if (!is_it_end_of_statement ()) | |
1768 | { | |
1769 | if (*input_line_pointer != '\"') | |
1770 | { | |
1771 | as_bad (_("%s argument must be a string"), | |
1772 | err ? ".error" : ".warning"); | |
40a4d956 | 1773 | ignore_rest_of_line (); |
d190d046 HPN |
1774 | return; |
1775 | } | |
1776 | ||
1777 | msg = demand_copy_C_string (&len); | |
1778 | if (msg == NULL) | |
1779 | return; | |
1780 | } | |
1781 | ||
1782 | if (err) | |
1783 | as_bad ("%s", msg); | |
1784 | else | |
1785 | as_warn ("%s", msg); | |
1786 | demand_empty_rest_of_line (); | |
252b5132 RH |
1787 | } |
1788 | ||
1789 | /* Handle the MRI fail pseudo-op. */ | |
1790 | ||
1791 | void | |
39e6acbd | 1792 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1793 | { |
1794 | offsetT temp; | |
1795 | char *stop = NULL; | |
1796 | char stopc; | |
1797 | ||
1798 | if (flag_mri) | |
1799 | stop = mri_comment_field (&stopc); | |
1800 | ||
1801 | temp = get_absolute_expression (); | |
1802 | if (temp >= 500) | |
1803 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1804 | else | |
1805 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1806 | ||
1807 | demand_empty_rest_of_line (); | |
1808 | ||
1809 | if (flag_mri) | |
1810 | mri_comment_end (stop, stopc); | |
1811 | } | |
1812 | ||
041ff4dd | 1813 | void |
39e6acbd | 1814 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1815 | { |
1816 | expressionS rep_exp; | |
1817 | long size = 1; | |
1818 | register long fill = 0; | |
1819 | char *p; | |
1820 | ||
1821 | #ifdef md_flush_pending_output | |
1822 | md_flush_pending_output (); | |
1823 | #endif | |
1824 | ||
1825 | get_known_segmented_expression (&rep_exp); | |
1826 | if (*input_line_pointer == ',') | |
1827 | { | |
1828 | input_line_pointer++; | |
1829 | size = get_absolute_expression (); | |
1830 | if (*input_line_pointer == ',') | |
1831 | { | |
1832 | input_line_pointer++; | |
1833 | fill = get_absolute_expression (); | |
1834 | } | |
1835 | } | |
1836 | ||
1837 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1838 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1839 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1840 | { | |
0e389e77 | 1841 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
1842 | size = BSD_FILL_SIZE_CROCK_8; |
1843 | } | |
1844 | if (size < 0) | |
1845 | { | |
0e389e77 | 1846 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
1847 | size = 0; |
1848 | } | |
1849 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1850 | { | |
1851 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 1852 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
1853 | size = 0; |
1854 | } | |
1855 | ||
1856 | if (size && !need_pass_2) | |
1857 | { | |
1858 | if (rep_exp.X_op == O_constant) | |
1859 | { | |
1860 | p = frag_var (rs_fill, (int) size, (int) size, | |
1861 | (relax_substateT) 0, (symbolS *) 0, | |
1862 | (offsetT) rep_exp.X_add_number, | |
1863 | (char *) 0); | |
1864 | } | |
1865 | else | |
1866 | { | |
1867 | /* We don't have a constant repeat count, so we can't use | |
1868 | rs_fill. We can get the same results out of rs_space, | |
1869 | but its argument is in bytes, so we must multiply the | |
1870 | repeat count by size. */ | |
1871 | ||
1872 | symbolS *rep_sym; | |
1873 | rep_sym = make_expr_symbol (&rep_exp); | |
1874 | if (size != 1) | |
1875 | { | |
1876 | expressionS size_exp; | |
1877 | size_exp.X_op = O_constant; | |
1878 | size_exp.X_add_number = size; | |
1879 | ||
1880 | rep_exp.X_op = O_multiply; | |
1881 | rep_exp.X_add_symbol = rep_sym; | |
1882 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1883 | rep_exp.X_add_number = 0; | |
1884 | rep_sym = make_expr_symbol (&rep_exp); | |
1885 | } | |
1886 | ||
1887 | p = frag_var (rs_space, (int) size, (int) size, | |
1888 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1889 | } | |
f0e652b4 | 1890 | |
252b5132 | 1891 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 1892 | |
252b5132 | 1893 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
1894 | flavoured AS. The following bizarre behaviour is to be |
1895 | compatible with above. I guess they tried to take up to 8 | |
1896 | bytes from a 4-byte expression and they forgot to sign | |
1897 | extend. */ | |
252b5132 RH |
1898 | #define BSD_FILL_SIZE_CROCK_4 (4) |
1899 | md_number_to_chars (p, (valueT) fill, | |
1900 | (size > BSD_FILL_SIZE_CROCK_4 | |
1901 | ? BSD_FILL_SIZE_CROCK_4 | |
1902 | : (int) size)); | |
1903 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
1904 | but emits no error message because it seems a legal thing to do. |
1905 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 1906 | compiler. */ |
252b5132 RH |
1907 | } |
1908 | demand_empty_rest_of_line (); | |
1909 | } | |
1910 | ||
041ff4dd | 1911 | void |
39e6acbd | 1912 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1913 | { |
1914 | char *name; | |
1915 | int c; | |
1916 | symbolS *symbolP; | |
1917 | char *stop = NULL; | |
1918 | char stopc; | |
1919 | ||
1920 | if (flag_mri) | |
1921 | stop = mri_comment_field (&stopc); | |
1922 | ||
1923 | do | |
1924 | { | |
1925 | name = input_line_pointer; | |
1926 | c = get_symbol_end (); | |
1927 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
1928 | S_SET_EXTERNAL (symbolP); |
1929 | ||
252b5132 RH |
1930 | *input_line_pointer = c; |
1931 | SKIP_WHITESPACE (); | |
58b5739a | 1932 | c = *input_line_pointer; |
252b5132 RH |
1933 | if (c == ',') |
1934 | { | |
1935 | input_line_pointer++; | |
1936 | SKIP_WHITESPACE (); | |
0e389e77 | 1937 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1938 | c = '\n'; |
1939 | } | |
1940 | } | |
1941 | while (c == ','); | |
1942 | ||
1943 | demand_empty_rest_of_line (); | |
1944 | ||
1945 | if (flag_mri) | |
1946 | mri_comment_end (stop, stopc); | |
1947 | } | |
1948 | ||
1949 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
1950 | ||
1951 | void | |
39e6acbd | 1952 | s_irp (int irpc) |
252b5132 | 1953 | { |
40a4d956 | 1954 | char *file, *eol; |
252b5132 RH |
1955 | unsigned int line; |
1956 | sb s; | |
1957 | const char *err; | |
1958 | sb out; | |
1959 | ||
1960 | as_where (&file, &line); | |
1961 | ||
1962 | sb_new (&s); | |
40a4d956 JB |
1963 | eol = find_end_of_line (input_line_pointer, 0); |
1964 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
1965 | input_line_pointer = eol; | |
252b5132 RH |
1966 | |
1967 | sb_new (&out); | |
1968 | ||
fea17916 | 1969 | err = expand_irp (irpc, 0, &s, &out, get_line_sb); |
252b5132 RH |
1970 | if (err != NULL) |
1971 | as_bad_where (file, line, "%s", err); | |
1972 | ||
1973 | sb_kill (&s); | |
1974 | ||
9f10757c | 1975 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
1976 | sb_kill (&out); |
1977 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1978 | } | |
1979 | ||
1980 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
1981 | the section to only be linked once. However, this is not supported | |
1982 | by most object file formats. This takes an optional argument, | |
1983 | which is what to do about duplicates. */ | |
1984 | ||
1985 | void | |
39e6acbd | 1986 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1987 | { |
1988 | enum linkonce_type type; | |
1989 | ||
1990 | SKIP_WHITESPACE (); | |
1991 | ||
1992 | type = LINKONCE_DISCARD; | |
1993 | ||
041ff4dd | 1994 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1995 | { |
1996 | char *s; | |
1997 | char c; | |
1998 | ||
1999 | s = input_line_pointer; | |
2000 | c = get_symbol_end (); | |
2001 | if (strcasecmp (s, "discard") == 0) | |
2002 | type = LINKONCE_DISCARD; | |
2003 | else if (strcasecmp (s, "one_only") == 0) | |
2004 | type = LINKONCE_ONE_ONLY; | |
2005 | else if (strcasecmp (s, "same_size") == 0) | |
2006 | type = LINKONCE_SAME_SIZE; | |
2007 | else if (strcasecmp (s, "same_contents") == 0) | |
2008 | type = LINKONCE_SAME_CONTENTS; | |
2009 | else | |
2010 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2011 | ||
2012 | *input_line_pointer = c; | |
2013 | } | |
2014 | ||
2015 | #ifdef obj_handle_link_once | |
2016 | obj_handle_link_once (type); | |
2017 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2018 | { |
2019 | flagword flags; | |
2020 | ||
2021 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2022 | as_warn (_(".linkonce is not supported for this object file format")); | |
2023 | ||
2024 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2025 | flags |= SEC_LINK_ONCE; | |
2026 | switch (type) | |
2027 | { | |
2028 | default: | |
2029 | abort (); | |
2030 | case LINKONCE_DISCARD: | |
2031 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2032 | break; | |
2033 | case LINKONCE_ONE_ONLY: | |
2034 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2035 | break; | |
2036 | case LINKONCE_SAME_SIZE: | |
2037 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2038 | break; | |
2039 | case LINKONCE_SAME_CONTENTS: | |
2040 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2041 | break; | |
2042 | } | |
041ff4dd | 2043 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2044 | as_bad (_("bfd_set_section_flags: %s"), |
2045 | bfd_errmsg (bfd_get_error ())); | |
2046 | } | |
252b5132 RH |
2047 | #endif /* ! defined (obj_handle_link_once) */ |
2048 | ||
2049 | demand_empty_rest_of_line (); | |
2050 | } | |
2051 | ||
e13bab5a AM |
2052 | void |
2053 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2054 | { |
e13bab5a | 2055 | char *pfrag; |
252b5132 RH |
2056 | segT current_seg = now_seg; |
2057 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2058 | segT bss_seg = bss_section; |
2059 | ||
252b5132 RH |
2060 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2061 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2062 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2063 | { | |
2064 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2065 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2066 | { |
2067 | bss_seg = subseg_new (".sbss", 1); | |
2068 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2069 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2070 | as_warn (_("error setting flags for \".sbss\": %s"), |
2071 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2072 | } |
2073 | } | |
2074 | #endif | |
e13bab5a | 2075 | subseg_set (bss_seg, 1); |
8684e216 | 2076 | |
e13bab5a | 2077 | if (align) |
041ff4dd | 2078 | { |
e13bab5a AM |
2079 | record_alignment (bss_seg, align); |
2080 | frag_align (align, 0, 0); | |
041ff4dd | 2081 | } |
252b5132 | 2082 | |
e13bab5a AM |
2083 | /* Detach from old frag. */ |
2084 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2085 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2086 | |
e13bab5a AM |
2087 | symbol_set_frag (symbolP, frag_now); |
2088 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2089 | *pfrag = 0; | |
f0e652b4 | 2090 | |
e13bab5a AM |
2091 | #ifdef S_SET_SIZE |
2092 | S_SET_SIZE (symbolP, size); | |
2093 | #endif | |
2094 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2095 | |
e13bab5a AM |
2096 | #ifdef OBJ_COFF |
2097 | /* The symbol may already have been created with a preceding | |
2098 | ".globl" directive -- be careful not to step on storage class | |
2099 | in that case. Otherwise, set it to static. */ | |
2100 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2101 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2102 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2103 | |
e13bab5a AM |
2104 | subseg_set (current_seg, current_subseg); |
2105 | } | |
f0e652b4 | 2106 | |
e13bab5a AM |
2107 | offsetT |
2108 | parse_align (int align_bytes) | |
2109 | { | |
2110 | expressionS exp; | |
2111 | addressT align; | |
252b5132 | 2112 | |
e13bab5a AM |
2113 | SKIP_WHITESPACE (); |
2114 | if (*input_line_pointer != ',') | |
2115 | { | |
2116 | no_align: | |
2117 | as_bad (_("expected alignment after size")); | |
2118 | ignore_rest_of_line (); | |
2119 | return -1; | |
2120 | } | |
f0e652b4 | 2121 | |
e13bab5a AM |
2122 | input_line_pointer++; |
2123 | SKIP_WHITESPACE (); | |
f0e652b4 | 2124 | |
e13bab5a AM |
2125 | align = get_absolute_expr (&exp); |
2126 | if (exp.X_op == O_absent) | |
2127 | goto no_align; | |
2128 | ||
2129 | if (!exp.X_unsigned) | |
2130 | { | |
2131 | as_warn (_("alignment negative; 0 assumed")); | |
2132 | align = 0; | |
041ff4dd | 2133 | } |
e13bab5a AM |
2134 | |
2135 | if (align_bytes && align != 0) | |
252b5132 | 2136 | { |
e13bab5a AM |
2137 | /* convert to a power of 2 alignment */ |
2138 | unsigned int alignp2 = 0; | |
2139 | while ((align & 1) == 0) | |
2140 | align >>= 1, ++alignp2; | |
2141 | if (align != 1) | |
252b5132 | 2142 | { |
e13bab5a AM |
2143 | as_bad (_("alignment not a power of 2")); |
2144 | ignore_rest_of_line (); | |
2145 | return -1; | |
252b5132 | 2146 | } |
e13bab5a | 2147 | align = alignp2; |
252b5132 | 2148 | } |
e13bab5a AM |
2149 | return align; |
2150 | } | |
252b5132 | 2151 | |
e13bab5a AM |
2152 | /* Called from s_comm_internal after symbol name and size have been |
2153 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2154 | 1 if this was a ".bss" directive which has a 3rd argument | |
2155 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2156 | with alignment in bytes. */ | |
252b5132 | 2157 | |
13c56984 | 2158 | symbolS * |
e13bab5a AM |
2159 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2160 | { | |
2161 | addressT align = 0; | |
252b5132 | 2162 | |
e13bab5a AM |
2163 | if (needs_align) |
2164 | { | |
2165 | align = parse_align (needs_align - 1); | |
2166 | if (align == (addressT) -1) | |
2167 | return NULL; | |
252b5132 RH |
2168 | } |
2169 | else | |
e13bab5a AM |
2170 | /* Assume some objects may require alignment on some systems. */ |
2171 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2172 | |
e13bab5a AM |
2173 | bss_alloc (symbolP, size, align); |
2174 | return symbolP; | |
041ff4dd | 2175 | } |
252b5132 RH |
2176 | |
2177 | void | |
39e6acbd | 2178 | s_lcomm (int needs_align) |
252b5132 | 2179 | { |
e13bab5a | 2180 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2181 | } |
2182 | ||
041ff4dd | 2183 | void |
39e6acbd | 2184 | s_lcomm_bytes (int needs_align) |
252b5132 | 2185 | { |
e13bab5a | 2186 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2187 | } |
2188 | ||
041ff4dd | 2189 | void |
39e6acbd | 2190 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2191 | { |
2192 | register char *name; | |
2193 | register char c; | |
2194 | register char *p; | |
2195 | expressionS exp; | |
2196 | register symbolS *symbolP; | |
2197 | ||
041ff4dd | 2198 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2199 | name = input_line_pointer; |
2200 | c = get_symbol_end (); | |
2201 | p = input_line_pointer; | |
2202 | *p = c; | |
0e389e77 AM |
2203 | |
2204 | if (name == p) | |
2205 | { | |
2206 | as_bad (_("expected symbol name")); | |
40a4d956 | 2207 | ignore_rest_of_line (); |
0e389e77 AM |
2208 | return; |
2209 | } | |
2210 | ||
252b5132 | 2211 | SKIP_WHITESPACE (); |
f0e652b4 | 2212 | |
252b5132 RH |
2213 | if (*input_line_pointer != ',') |
2214 | { | |
2215 | *p = 0; | |
0e389e77 | 2216 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2217 | *p = c; |
2218 | ignore_rest_of_line (); | |
2219 | return; | |
2220 | } | |
f0e652b4 | 2221 | |
252b5132 | 2222 | input_line_pointer++; |
9497f5ac | 2223 | expression_and_evaluate (&exp); |
f0e652b4 | 2224 | |
252b5132 RH |
2225 | if (exp.X_op != O_constant |
2226 | && exp.X_op != O_register) | |
2227 | { | |
2228 | as_bad (_("bad expression")); | |
2229 | ignore_rest_of_line (); | |
2230 | return; | |
2231 | } | |
f0e652b4 | 2232 | |
252b5132 RH |
2233 | *p = 0; |
2234 | symbolP = symbol_find_or_make (name); | |
2235 | ||
2236 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && | |
2237 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
2238 | those fields, and I can't see when they'd ever be tripped. I | |
2239 | don't think I understand why they were here so I may have | |
2240 | introduced a bug. As recently as 1.37 didn't have this test | |
041ff4dd | 2241 | anyway. xoxorich. */ |
252b5132 RH |
2242 | |
2243 | if (S_GET_SEGMENT (symbolP) == undefined_section | |
2244 | && S_GET_VALUE (symbolP) == 0) | |
2245 | { | |
2246 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2247 | keep the "external" bit. */ |
252b5132 RH |
2248 | S_SET_SEGMENT (symbolP, |
2249 | (exp.X_op == O_constant | |
2250 | ? absolute_section | |
2251 | : reg_section)); | |
2252 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2253 | } | |
2254 | else | |
2255 | { | |
0e389e77 | 2256 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2257 | } |
f0e652b4 | 2258 | |
252b5132 RH |
2259 | *p = c; |
2260 | demand_empty_rest_of_line (); | |
041ff4dd | 2261 | } |
252b5132 | 2262 | |
0822d075 NC |
2263 | /* Read a line into an sb. Returns the character that ended the line |
2264 | or zero if there are no more lines. */ | |
252b5132 RH |
2265 | |
2266 | static int | |
39e6acbd | 2267 | get_line_sb (sb *line) |
252b5132 | 2268 | { |
40a4d956 | 2269 | char *eol; |
252b5132 RH |
2270 | |
2271 | if (input_line_pointer[-1] == '\n') | |
2272 | bump_line_counters (); | |
2273 | ||
2274 | if (input_line_pointer >= buffer_limit) | |
2275 | { | |
2276 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2277 | if (buffer_limit == 0) | |
2278 | return 0; | |
2279 | } | |
2280 | ||
40a4d956 JB |
2281 | eol = find_end_of_line (input_line_pointer, flag_m68k_mri); |
2282 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); | |
2283 | input_line_pointer = eol; | |
f0e652b4 | 2284 | |
0822d075 NC |
2285 | /* Don't skip multiple end-of-line characters, because that breaks support |
2286 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2287 | characters but isn't. Instead just skip one end of line character and | |
2288 | return the character skipped so that the caller can re-insert it if | |
2289 | necessary. */ | |
40a4d956 | 2290 | return *input_line_pointer++; |
252b5132 RH |
2291 | } |
2292 | ||
fea17916 | 2293 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2294 | |
2295 | void | |
39e6acbd | 2296 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2297 | { |
40a4d956 | 2298 | char *file, *eol; |
252b5132 RH |
2299 | unsigned int line; |
2300 | sb s; | |
252b5132 RH |
2301 | const char *err; |
2302 | const char *name; | |
2303 | ||
2304 | as_where (&file, &line); | |
2305 | ||
2306 | sb_new (&s); | |
40a4d956 JB |
2307 | eol = find_end_of_line (input_line_pointer, 0); |
2308 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2309 | input_line_pointer = eol; | |
252b5132 | 2310 | |
252b5132 | 2311 | if (line_label != NULL) |
360e86f1 JB |
2312 | { |
2313 | sb label; | |
252b5132 | 2314 | |
360e86f1 JB |
2315 | sb_new (&label); |
2316 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2317 | err = define_macro (0, &s, &label, get_line_sb, file, line, &name); | |
2318 | sb_kill (&label); | |
2319 | } | |
2320 | else | |
2321 | err = define_macro (0, &s, NULL, get_line_sb, file, line, &name); | |
252b5132 | 2322 | if (err != NULL) |
02ddf156 | 2323 | as_bad_where (file, line, err, name); |
252b5132 RH |
2324 | else |
2325 | { | |
2326 | if (line_label != NULL) | |
2327 | { | |
5e75c3ab | 2328 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2329 | S_SET_VALUE (line_label, 0); |
2b47531b | 2330 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2331 | } |
2332 | ||
abd63a32 | 2333 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2334 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2335 | || (!flag_m68k_mri |
252b5132 RH |
2336 | && *name == '.' |
2337 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2338 | as_warn_where (file, |
2339 | line, | |
2340 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2341 | name); |
2342 | } | |
2343 | ||
2344 | sb_kill (&s); | |
2345 | } | |
2346 | ||
2347 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2348 | expansion. */ | |
2349 | ||
2350 | void | |
39e6acbd | 2351 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2352 | { |
2353 | cond_exit_macro (macro_nest); | |
2354 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2355 | } | |
2356 | ||
2357 | /* Switch in and out of MRI mode. */ | |
2358 | ||
2359 | void | |
39e6acbd | 2360 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2361 | { |
2362 | int on, old_flag; | |
2363 | ||
2364 | on = get_absolute_expression (); | |
2365 | old_flag = flag_mri; | |
2366 | if (on != 0) | |
2367 | { | |
2368 | flag_mri = 1; | |
2369 | #ifdef TC_M68K | |
2370 | flag_m68k_mri = 1; | |
2371 | #endif | |
2372 | macro_mri_mode (1); | |
2373 | } | |
2374 | else | |
2375 | { | |
2376 | flag_mri = 0; | |
abd63a32 | 2377 | #ifdef TC_M68K |
252b5132 | 2378 | flag_m68k_mri = 0; |
abd63a32 | 2379 | #endif |
252b5132 RH |
2380 | macro_mri_mode (0); |
2381 | } | |
2382 | ||
2383 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2384 | update the operator rankings. */ | |
2385 | expr_set_precedence (); | |
2386 | ||
2387 | #ifdef MRI_MODE_CHANGE | |
2388 | if (on != old_flag) | |
2389 | MRI_MODE_CHANGE (on); | |
2390 | #endif | |
2391 | ||
2392 | demand_empty_rest_of_line (); | |
2393 | } | |
2394 | ||
2395 | /* Handle changing the location counter. */ | |
2396 | ||
2397 | static void | |
39e6acbd | 2398 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 RH |
2399 | { |
2400 | if (segment != now_seg && segment != absolute_section) | |
0e389e77 | 2401 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2402 | |
2403 | if (now_seg == absolute_section) | |
2404 | { | |
2405 | if (fill != 0) | |
2406 | as_warn (_("ignoring fill value in absolute section")); | |
2407 | if (exp->X_op != O_constant) | |
2408 | { | |
2409 | as_bad (_("only constant offsets supported in absolute section")); | |
2410 | exp->X_add_number = 0; | |
2411 | } | |
2412 | abs_section_offset = exp->X_add_number; | |
2413 | } | |
2414 | else | |
2415 | { | |
2416 | char *p; | |
2289f85d AM |
2417 | symbolS *sym = exp->X_add_symbol; |
2418 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2419 | |
2289f85d AM |
2420 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2421 | { | |
2422 | /* Handle complex expressions. */ | |
2423 | sym = make_expr_symbol (exp); | |
2424 | off = 0; | |
2425 | } | |
2426 | ||
2427 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2428 | *p = fill; |
2429 | } | |
2430 | } | |
2431 | ||
041ff4dd | 2432 | void |
39e6acbd | 2433 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2434 | { |
2435 | register segT segment; | |
2436 | expressionS exp; | |
2437 | register long temp_fill; | |
2438 | ||
2439 | #ifdef md_flush_pending_output | |
2440 | md_flush_pending_output (); | |
2441 | #endif | |
2442 | ||
2443 | /* The m68k MRI assembler has a different meaning for .org. It | |
2444 | means to create an absolute section at a given address. We can't | |
2445 | support that--use a linker script instead. */ | |
2446 | if (flag_m68k_mri) | |
2447 | { | |
2448 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2449 | ignore_rest_of_line (); | |
2450 | return; | |
2451 | } | |
2452 | ||
2453 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2454 | thing as a sub-segment-relative origin. Any absolute origin is | |
2455 | given a warning, then assumed to be segment-relative. Any | |
2456 | segmented origin expression ("foo+42") had better be in the right | |
2457 | segment or the .org is ignored. | |
2458 | ||
2459 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2460 | we never know sub-segment sizes when we are reading code. BSD | |
2461 | will crash trying to emit negative numbers of filler bytes in | |
2462 | certain .orgs. We don't crash, but see as-write for that code. | |
2463 | ||
2464 | Don't make frag if need_pass_2==1. */ | |
2465 | segment = get_known_segmented_expression (&exp); | |
2466 | if (*input_line_pointer == ',') | |
2467 | { | |
2468 | input_line_pointer++; | |
2469 | temp_fill = get_absolute_expression (); | |
2470 | } | |
2471 | else | |
2472 | temp_fill = 0; | |
2473 | ||
2474 | if (!need_pass_2) | |
2475 | do_org (segment, &exp, temp_fill); | |
2476 | ||
2477 | demand_empty_rest_of_line (); | |
041ff4dd | 2478 | } |
252b5132 RH |
2479 | |
2480 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2481 | called by the obj-format routine which handles section changing | |
2482 | when in MRI mode. It will create a new section, and return it. It | |
2483 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2484 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2485 | |
2486 | void | |
39e6acbd | 2487 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2488 | { |
2489 | #ifdef TC_M68K | |
2490 | ||
2491 | char *name; | |
2492 | char c; | |
2493 | segT seg; | |
2494 | ||
2495 | SKIP_WHITESPACE (); | |
041ff4dd | 2496 | |
252b5132 | 2497 | name = input_line_pointer; |
3882b010 | 2498 | if (!ISDIGIT (*name)) |
252b5132 RH |
2499 | c = get_symbol_end (); |
2500 | else | |
2501 | { | |
2502 | do | |
2503 | { | |
2504 | ++input_line_pointer; | |
2505 | } | |
3882b010 | 2506 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2507 | |
252b5132 RH |
2508 | c = *input_line_pointer; |
2509 | *input_line_pointer = '\0'; | |
2510 | } | |
2511 | ||
2512 | name = xstrdup (name); | |
2513 | ||
2514 | *input_line_pointer = c; | |
2515 | ||
2516 | seg = subseg_new (name, 0); | |
2517 | ||
2518 | if (*input_line_pointer == ',') | |
2519 | { | |
2520 | int align; | |
2521 | ||
2522 | ++input_line_pointer; | |
2523 | align = get_absolute_expression (); | |
2524 | record_alignment (seg, align); | |
2525 | } | |
2526 | ||
2527 | *type = 'C'; | |
2528 | if (*input_line_pointer == ',') | |
2529 | { | |
2530 | c = *++input_line_pointer; | |
3882b010 | 2531 | c = TOUPPER (c); |
252b5132 RH |
2532 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2533 | *type = c; | |
2534 | else | |
2535 | as_bad (_("unrecognized section type")); | |
2536 | ++input_line_pointer; | |
2537 | ||
252b5132 RH |
2538 | { |
2539 | flagword flags; | |
2540 | ||
2541 | flags = SEC_NO_FLAGS; | |
2542 | if (*type == 'C') | |
2543 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2544 | else if (*type == 'D' || *type == 'M') | |
2545 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2546 | else if (*type == 'R') | |
2547 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2548 | if (flags != SEC_NO_FLAGS) | |
2549 | { | |
041ff4dd | 2550 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2551 | as_warn (_("error setting flags for \"%s\": %s"), |
2552 | bfd_section_name (stdoutput, seg), | |
2553 | bfd_errmsg (bfd_get_error ())); | |
2554 | } | |
2555 | } | |
252b5132 RH |
2556 | } |
2557 | ||
2558 | /* Ignore the HP type. */ | |
2559 | if (*input_line_pointer == ',') | |
2560 | input_line_pointer += 2; | |
2561 | ||
2562 | demand_empty_rest_of_line (); | |
2563 | ||
2564 | #else /* ! TC_M68K */ | |
2565 | #ifdef TC_I960 | |
2566 | ||
2567 | char *name; | |
2568 | char c; | |
2569 | segT seg; | |
2570 | ||
2571 | SKIP_WHITESPACE (); | |
2572 | ||
2573 | name = input_line_pointer; | |
2574 | c = get_symbol_end (); | |
2575 | ||
2576 | name = xstrdup (name); | |
2577 | ||
2578 | *input_line_pointer = c; | |
2579 | ||
2580 | seg = subseg_new (name, 0); | |
2581 | ||
2582 | if (*input_line_pointer != ',') | |
2583 | *type = 'C'; | |
2584 | else | |
2585 | { | |
2586 | char *sectype; | |
2587 | ||
2588 | ++input_line_pointer; | |
2589 | SKIP_WHITESPACE (); | |
2590 | sectype = input_line_pointer; | |
2591 | c = get_symbol_end (); | |
2592 | if (*sectype == '\0') | |
2593 | *type = 'C'; | |
2594 | else if (strcasecmp (sectype, "text") == 0) | |
2595 | *type = 'C'; | |
2596 | else if (strcasecmp (sectype, "data") == 0) | |
2597 | *type = 'D'; | |
2598 | else if (strcasecmp (sectype, "romdata") == 0) | |
2599 | *type = 'R'; | |
2600 | else | |
2601 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2602 | *input_line_pointer = c; | |
2603 | } | |
2604 | ||
2605 | if (*input_line_pointer == ',') | |
2606 | { | |
2607 | char *seccmd; | |
2608 | ||
2609 | ++input_line_pointer; | |
2610 | SKIP_WHITESPACE (); | |
2611 | seccmd = input_line_pointer; | |
2612 | c = get_symbol_end (); | |
2613 | if (strcasecmp (seccmd, "absolute") == 0) | |
2614 | { | |
2615 | as_bad (_("absolute sections are not supported")); | |
2616 | *input_line_pointer = c; | |
2617 | ignore_rest_of_line (); | |
2618 | return; | |
2619 | } | |
2620 | else if (strcasecmp (seccmd, "align") == 0) | |
2621 | { | |
2622 | int align; | |
2623 | ||
2624 | *input_line_pointer = c; | |
2625 | align = get_absolute_expression (); | |
2626 | record_alignment (seg, align); | |
2627 | } | |
2628 | else | |
2629 | { | |
2630 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2631 | *input_line_pointer = c; | |
2632 | } | |
2633 | } | |
2634 | ||
041ff4dd | 2635 | demand_empty_rest_of_line (); |
252b5132 RH |
2636 | |
2637 | #else /* ! TC_I960 */ | |
2638 | /* The MRI assembler seems to use different forms of .sect for | |
2639 | different targets. */ | |
2640 | as_bad ("MRI mode not supported for this target"); | |
2641 | ignore_rest_of_line (); | |
2642 | #endif /* ! TC_I960 */ | |
2643 | #endif /* ! TC_M68K */ | |
2644 | } | |
2645 | ||
2646 | /* Handle the .print pseudo-op. */ | |
2647 | ||
2648 | void | |
39e6acbd | 2649 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2650 | { |
2651 | char *s; | |
2652 | int len; | |
2653 | ||
2654 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
2655 | if (s != NULL) |
2656 | printf ("%s\n", s); | |
252b5132 RH |
2657 | demand_empty_rest_of_line (); |
2658 | } | |
2659 | ||
2660 | /* Handle the .purgem pseudo-op. */ | |
2661 | ||
2662 | void | |
39e6acbd | 2663 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2664 | { |
2665 | if (is_it_end_of_statement ()) | |
2666 | { | |
2667 | demand_empty_rest_of_line (); | |
2668 | return; | |
2669 | } | |
2670 | ||
2671 | do | |
2672 | { | |
2673 | char *name; | |
2674 | char c; | |
2675 | ||
2676 | SKIP_WHITESPACE (); | |
2677 | name = input_line_pointer; | |
2678 | c = get_symbol_end (); | |
2679 | delete_macro (name); | |
2680 | *input_line_pointer = c; | |
2681 | SKIP_WHITESPACE (); | |
2682 | } | |
2683 | while (*input_line_pointer++ == ','); | |
2684 | ||
2685 | --input_line_pointer; | |
2686 | demand_empty_rest_of_line (); | |
2687 | } | |
2688 | ||
057f53c1 | 2689 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 2690 | |
057f53c1 JB |
2691 | static void |
2692 | s_bad_end (int endr) | |
7f28ab9d | 2693 | { |
057f53c1 JB |
2694 | as_warn (_(".end%c encountered without preceeding %s"), |
2695 | endr ? 'r' : 'm', | |
2696 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
2697 | demand_empty_rest_of_line (); |
2698 | } | |
2699 | ||
2700 | /* Handle the .rept pseudo-op. */ | |
2701 | ||
252b5132 | 2702 | void |
39e6acbd | 2703 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2704 | { |
2705 | int count; | |
252b5132 RH |
2706 | |
2707 | count = get_absolute_expression (); | |
2708 | ||
041ff4dd | 2709 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2710 | } |
2711 | ||
2712 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2713 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2714 | |
2715 | void | |
39e6acbd | 2716 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
2717 | { |
2718 | sb one; | |
2719 | sb many; | |
2720 | ||
252b5132 | 2721 | sb_new (&one); |
041ff4dd | 2722 | if (!buffer_and_nest (start, end, &one, get_line_sb)) |
252b5132 | 2723 | { |
6dc19fc4 | 2724 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2725 | return; |
2726 | } | |
2727 | ||
2728 | sb_new (&many); | |
2729 | while (count-- > 0) | |
2730 | sb_add_sb (&many, &one); | |
2731 | ||
2732 | sb_kill (&one); | |
2733 | ||
9f10757c | 2734 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2735 | sb_kill (&many); |
2736 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2737 | } | |
2738 | ||
6dc19fc4 TW |
2739 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
2740 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 2741 | are properly nested. |
6dc19fc4 TW |
2742 | |
2743 | This function makes it easier to implement a premature "break" out of the | |
2744 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 2745 | such as line substitutions. */ |
6dc19fc4 TW |
2746 | |
2747 | void | |
39e6acbd | 2748 | end_repeat (int extra) |
6dc19fc4 TW |
2749 | { |
2750 | cond_exit_macro (macro_nest); | |
2751 | while (extra-- >= 0) | |
2752 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2753 | } | |
2754 | ||
be95a9c1 | 2755 | static void |
9497f5ac | 2756 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
2757 | { |
2758 | symbolS *symbolP; | |
2759 | ||
2760 | if (name[0] == '.' && name[1] == '\0') | |
2761 | { | |
2762 | /* Turn '. = mumble' into a .org mumble. */ | |
2763 | segT segment; | |
2764 | expressionS exp; | |
2765 | ||
2766 | segment = get_known_segmented_expression (&exp); | |
2767 | ||
2768 | if (!need_pass_2) | |
2769 | do_org (segment, &exp, 0); | |
2770 | ||
2771 | return; | |
2772 | } | |
2773 | ||
2774 | if ((symbolP = symbol_find (name)) == NULL | |
2775 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2776 | { | |
2777 | symbolP = symbol_find_or_make (name); | |
2778 | #ifndef NO_LISTING | |
2779 | /* When doing symbol listings, play games with dummy fragments living | |
2780 | outside the normal fragment chain to record the file and line info | |
2781 | for this symbol. */ | |
2782 | if (listing & LISTING_SYMBOLS) | |
2783 | { | |
2784 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 2785 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
2786 | dummy_frag->line = listing_tail; |
2787 | dummy_frag->fr_symbol = symbolP; | |
2788 | symbol_set_frag (symbolP, dummy_frag); | |
2789 | } | |
2790 | #endif | |
31d20a21 AM |
2791 | #ifdef OBJ_COFF |
2792 | /* "set" symbols are local unless otherwise specified. */ | |
2793 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
2794 | #endif |
2795 | } | |
2796 | ||
6a2b6326 | 2797 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac NC |
2798 | { |
2799 | /* Permit register names to be redefined. */ | |
2800 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) | |
2801 | && S_GET_SEGMENT (symbolP) != reg_section) | |
2802 | { | |
2803 | as_bad (_("symbol `%s' is already defined"), name); | |
2804 | symbolP = symbol_clone (symbolP, 0); | |
2805 | } | |
2806 | /* If the symbol is volatile, copy the symbol and replace the | |
2807 | original with the copy, so that previous uses of the symbol will | |
2808 | retain the value of the symbol at the point of use. */ | |
2809 | else if (S_IS_VOLATILE (symbolP) | |
2810 | /* This could be avoided when the symbol wasn't used so far, but | |
2811 | the comment in struc-symbol.h says this flag isn't reliable. */ | |
2812 | && (1 || symbol_used_p (symbolP))) | |
2813 | symbolP = symbol_clone (symbolP, 1); | |
2814 | } | |
2815 | ||
2816 | if (mode == 0) | |
2817 | S_SET_VOLATILE (symbolP); | |
2818 | else if (mode < 0) | |
2819 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
2820 | |
2821 | pseudo_set (symbolP); | |
be95a9c1 AM |
2822 | } |
2823 | ||
9497f5ac NC |
2824 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
2825 | then this is .equiv, and it is an error if the symbol is already | |
2826 | defined. If EQUIV is -1, the symbol additionally is a forward | |
2827 | reference. */ | |
252b5132 | 2828 | |
041ff4dd | 2829 | void |
39e6acbd | 2830 | s_set (int equiv) |
252b5132 | 2831 | { |
be95a9c1 AM |
2832 | char *name; |
2833 | char delim; | |
2834 | char *end_name; | |
252b5132 | 2835 | |
041ff4dd NC |
2836 | /* Especial apologies for the random logic: |
2837 | this just grew, and could be parsed much more simply! | |
2838 | Dean in haste. */ | |
252b5132 RH |
2839 | name = input_line_pointer; |
2840 | delim = get_symbol_end (); | |
2841 | end_name = input_line_pointer; | |
0e389e77 | 2842 | *end_name = delim; |
409d19c4 | 2843 | |
0e389e77 | 2844 | if (name == end_name) |
409d19c4 AM |
2845 | { |
2846 | as_bad (_("expected symbol name")); | |
40a4d956 | 2847 | ignore_rest_of_line (); |
409d19c4 AM |
2848 | return; |
2849 | } | |
2850 | ||
252b5132 RH |
2851 | SKIP_WHITESPACE (); |
2852 | ||
2853 | if (*input_line_pointer != ',') | |
2854 | { | |
2855 | *end_name = 0; | |
0e389e77 | 2856 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2857 | *end_name = delim; |
2858 | ignore_rest_of_line (); | |
2859 | return; | |
2860 | } | |
2861 | ||
2862 | input_line_pointer++; | |
2863 | *end_name = 0; | |
2864 | ||
be95a9c1 | 2865 | assign_symbol (name, equiv); |
252b5132 | 2866 | *end_name = delim; |
31d20a21 AM |
2867 | |
2868 | demand_empty_rest_of_line (); | |
041ff4dd | 2869 | } |
252b5132 | 2870 | |
041ff4dd | 2871 | void |
39e6acbd | 2872 | s_space (int mult) |
252b5132 RH |
2873 | { |
2874 | expressionS exp; | |
2875 | expressionS val; | |
2876 | char *p = 0; | |
2877 | char *stop = NULL; | |
2878 | char stopc; | |
2879 | int bytes; | |
2880 | ||
2881 | #ifdef md_flush_pending_output | |
2882 | md_flush_pending_output (); | |
2883 | #endif | |
2884 | ||
2885 | if (flag_mri) | |
2886 | stop = mri_comment_field (&stopc); | |
2887 | ||
2888 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
2889 | this is ds.b. */ | |
2890 | if (flag_m68k_mri && mult > 1) | |
2891 | { | |
2892 | if (now_seg == absolute_section) | |
2893 | { | |
2894 | abs_section_offset += abs_section_offset & 1; | |
2895 | if (line_label != NULL) | |
2896 | S_SET_VALUE (line_label, abs_section_offset); | |
2897 | } | |
2898 | else if (mri_common_symbol != NULL) | |
2899 | { | |
2900 | valueT val; | |
2901 | ||
2902 | val = S_GET_VALUE (mri_common_symbol); | |
2903 | if ((val & 1) != 0) | |
2904 | { | |
2905 | S_SET_VALUE (mri_common_symbol, val + 1); | |
2906 | if (line_label != NULL) | |
2907 | { | |
2b47531b ILT |
2908 | expressionS *symexp; |
2909 | ||
2910 | symexp = symbol_get_value_expression (line_label); | |
2911 | know (symexp->X_op == O_symbol); | |
2912 | know (symexp->X_add_symbol == mri_common_symbol); | |
2913 | symexp->X_add_number += 1; | |
252b5132 RH |
2914 | } |
2915 | } | |
2916 | } | |
2917 | else | |
2918 | { | |
2919 | do_align (1, (char *) NULL, 0, 0); | |
2920 | if (line_label != NULL) | |
2921 | { | |
2b47531b | 2922 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
2923 | S_SET_VALUE (line_label, frag_now_fix ()); |
2924 | } | |
2925 | } | |
2926 | } | |
2927 | ||
2928 | bytes = mult; | |
2929 | ||
2930 | expression (&exp); | |
2931 | ||
2932 | SKIP_WHITESPACE (); | |
2933 | if (*input_line_pointer == ',') | |
2934 | { | |
2935 | ++input_line_pointer; | |
2936 | expression (&val); | |
2937 | } | |
2938 | else | |
2939 | { | |
2940 | val.X_op = O_constant; | |
2941 | val.X_add_number = 0; | |
2942 | } | |
2943 | ||
2944 | if (val.X_op != O_constant | |
2945 | || val.X_add_number < - 0x80 | |
2946 | || val.X_add_number > 0xff | |
2947 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
2948 | { | |
9497f5ac | 2949 | resolve_expression (&exp); |
252b5132 | 2950 | if (exp.X_op != O_constant) |
0e389e77 | 2951 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
2952 | else |
2953 | { | |
2954 | offsetT i; | |
2955 | ||
2956 | if (mult == 0) | |
2957 | mult = 1; | |
2958 | bytes = mult * exp.X_add_number; | |
2959 | for (i = 0; i < exp.X_add_number; i++) | |
2960 | emit_expr (&val, mult); | |
2961 | } | |
2962 | } | |
2963 | else | |
2964 | { | |
9497f5ac NC |
2965 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
2966 | resolve_expression (&exp); | |
2967 | ||
252b5132 RH |
2968 | if (exp.X_op == O_constant) |
2969 | { | |
2970 | long repeat; | |
2971 | ||
2972 | repeat = exp.X_add_number; | |
2973 | if (mult) | |
2974 | repeat *= mult; | |
2975 | bytes = repeat; | |
2976 | if (repeat <= 0) | |
2977 | { | |
2d150871 RO |
2978 | if (!flag_mri) |
2979 | as_warn (_(".space repeat count is zero, ignored")); | |
2980 | else if (repeat < 0) | |
252b5132 RH |
2981 | as_warn (_(".space repeat count is negative, ignored")); |
2982 | goto getout; | |
2983 | } | |
2984 | ||
2985 | /* If we are in the absolute section, just bump the offset. */ | |
2986 | if (now_seg == absolute_section) | |
2987 | { | |
2988 | abs_section_offset += repeat; | |
2989 | goto getout; | |
2990 | } | |
2991 | ||
2992 | /* If we are secretly in an MRI common section, then | |
2993 | creating space just increases the size of the common | |
2994 | symbol. */ | |
2995 | if (mri_common_symbol != NULL) | |
2996 | { | |
2997 | S_SET_VALUE (mri_common_symbol, | |
2998 | S_GET_VALUE (mri_common_symbol) + repeat); | |
2999 | goto getout; | |
3000 | } | |
3001 | ||
3002 | if (!need_pass_2) | |
3003 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3004 | (offsetT) repeat, (char *) 0); | |
3005 | } | |
3006 | else | |
3007 | { | |
3008 | if (now_seg == absolute_section) | |
3009 | { | |
3010 | as_bad (_("space allocation too complex in absolute section")); | |
3011 | subseg_set (text_section, 0); | |
3012 | } | |
f0e652b4 | 3013 | |
252b5132 RH |
3014 | if (mri_common_symbol != NULL) |
3015 | { | |
3016 | as_bad (_("space allocation too complex in common section")); | |
3017 | mri_common_symbol = NULL; | |
3018 | } | |
f0e652b4 | 3019 | |
252b5132 RH |
3020 | if (!need_pass_2) |
3021 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3022 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3023 | } | |
3024 | ||
3025 | if (p) | |
3026 | *p = val.X_add_number; | |
3027 | } | |
3028 | ||
3029 | getout: | |
3030 | ||
3031 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3032 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3033 | or dcb.b. */ | |
3034 | if (flag_mri && (bytes & 1) != 0) | |
3035 | mri_pending_align = 1; | |
3036 | ||
3037 | demand_empty_rest_of_line (); | |
3038 | ||
3039 | if (flag_mri) | |
3040 | mri_comment_end (stop, stopc); | |
3041 | } | |
3042 | ||
3043 | /* This is like s_space, but the value is a floating point number with | |
3044 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3045 | friends. */ | |
3046 | ||
3047 | void | |
39e6acbd | 3048 | s_float_space (int float_type) |
252b5132 RH |
3049 | { |
3050 | offsetT count; | |
3051 | int flen; | |
3052 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3053 | char *stop = NULL; | |
3054 | char stopc; | |
3055 | ||
3056 | if (flag_mri) | |
3057 | stop = mri_comment_field (&stopc); | |
3058 | ||
3059 | count = get_absolute_expression (); | |
3060 | ||
3061 | SKIP_WHITESPACE (); | |
3062 | if (*input_line_pointer != ',') | |
3063 | { | |
3064 | as_bad (_("missing value")); | |
3065 | ignore_rest_of_line (); | |
3066 | if (flag_mri) | |
3067 | mri_comment_end (stop, stopc); | |
3068 | return; | |
3069 | } | |
3070 | ||
3071 | ++input_line_pointer; | |
3072 | ||
3073 | SKIP_WHITESPACE (); | |
3074 | ||
3075 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3076 | * letter is legal. */ | |
3077 | if (input_line_pointer[0] == '0' | |
3882b010 | 3078 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3079 | input_line_pointer += 2; |
3080 | ||
3081 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3082 | with the exact digits specified. */ | |
3083 | if (input_line_pointer[0] == ':') | |
3084 | { | |
3085 | flen = hex_float (float_type, temp); | |
3086 | if (flen < 0) | |
3087 | { | |
3088 | ignore_rest_of_line (); | |
3089 | if (flag_mri) | |
3090 | mri_comment_end (stop, stopc); | |
3091 | return; | |
3092 | } | |
3093 | } | |
3094 | else | |
3095 | { | |
3096 | char *err; | |
3097 | ||
3098 | err = md_atof (float_type, temp, &flen); | |
3099 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3100 | know (flen > 0); | |
3101 | if (err) | |
3102 | { | |
0e389e77 | 3103 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3104 | ignore_rest_of_line (); |
3105 | if (flag_mri) | |
3106 | mri_comment_end (stop, stopc); | |
3107 | return; | |
3108 | } | |
3109 | } | |
3110 | ||
3111 | while (--count >= 0) | |
3112 | { | |
3113 | char *p; | |
3114 | ||
3115 | p = frag_more (flen); | |
3116 | memcpy (p, temp, (unsigned int) flen); | |
3117 | } | |
3118 | ||
3119 | demand_empty_rest_of_line (); | |
3120 | ||
3121 | if (flag_mri) | |
3122 | mri_comment_end (stop, stopc); | |
3123 | } | |
3124 | ||
3125 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3126 | ||
3127 | void | |
39e6acbd | 3128 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3129 | { |
3130 | char *stop = NULL; | |
3131 | char stopc; | |
3132 | ||
3133 | if (flag_mri) | |
3134 | stop = mri_comment_field (&stopc); | |
3135 | abs_section_offset = get_absolute_expression (); | |
3136 | subseg_set (absolute_section, 0); | |
3137 | demand_empty_rest_of_line (); | |
3138 | if (flag_mri) | |
3139 | mri_comment_end (stop, stopc); | |
3140 | } | |
3141 | ||
3142 | void | |
39e6acbd | 3143 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3144 | { |
3145 | register int temp; | |
3146 | ||
3147 | temp = get_absolute_expression (); | |
3148 | subseg_set (text_section, (subsegT) temp); | |
3149 | demand_empty_rest_of_line (); | |
3150 | #ifdef OBJ_VMS | |
3151 | const_flag &= ~IN_DEFAULT_SECTION; | |
3152 | #endif | |
041ff4dd | 3153 | } |
06e77878 AO |
3154 | |
3155 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3156 | referenced directly, will cause y to become a weak symbol. */ | |
3157 | void | |
3158 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3159 | { | |
3160 | char *name; | |
3161 | char delim; | |
3162 | char *end_name; | |
3163 | symbolS *symbolP; | |
3164 | symbolS *symbolP2; | |
3165 | expressionS exp; | |
3166 | ||
3167 | name = input_line_pointer; | |
3168 | delim = get_symbol_end (); | |
3169 | end_name = input_line_pointer; | |
3170 | ||
3171 | if (name == end_name) | |
3172 | { | |
3173 | as_bad (_("expected symbol name")); | |
3174 | *end_name = delim; | |
3175 | ignore_rest_of_line (); | |
3176 | return; | |
3177 | } | |
3178 | ||
3179 | symbolP = symbol_find_or_make (name); | |
3180 | ||
b54788f8 AO |
3181 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3182 | { | |
3183 | as_bad (_("symbol `%s' is already defined"), name); | |
3184 | *end_name = delim; | |
3185 | ignore_rest_of_line (); | |
3186 | return; | |
3187 | } | |
3188 | ||
06e77878 AO |
3189 | *end_name = delim; |
3190 | ||
3191 | SKIP_WHITESPACE (); | |
3192 | ||
3193 | if (*input_line_pointer != ',') | |
3194 | { | |
3195 | *end_name = 0; | |
3196 | as_bad (_("expected comma after \"%s\""), name); | |
3197 | *end_name = delim; | |
3198 | ignore_rest_of_line (); | |
3199 | return; | |
3200 | } | |
3201 | ||
3202 | input_line_pointer++; | |
3203 | ||
3204 | SKIP_WHITESPACE (); | |
3205 | ||
3206 | name = input_line_pointer; | |
3207 | delim = get_symbol_end (); | |
3208 | end_name = input_line_pointer; | |
3209 | ||
3210 | if (name == end_name) | |
3211 | { | |
3212 | as_bad (_("expected symbol name")); | |
3213 | ignore_rest_of_line (); | |
3214 | return; | |
3215 | } | |
3216 | ||
3217 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3218 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3219 | { | |
3220 | symbolP2 = symbol_find_or_make (name); | |
3221 | S_SET_WEAKREFD (symbolP2); | |
3222 | } | |
3223 | else | |
3224 | { | |
3225 | symbolS *symp = symbolP2; | |
3226 | ||
3227 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3228 | { | |
3229 | expressionS *expP = symbol_get_value_expression (symp); | |
3230 | ||
3231 | assert (expP->X_op == O_symbol | |
3232 | && expP->X_add_number == 0); | |
3233 | symp = expP->X_add_symbol; | |
3234 | } | |
3235 | if (symp == symbolP) | |
3236 | { | |
3237 | char *loop; | |
3238 | ||
3239 | loop = concat (S_GET_NAME (symbolP), | |
3240 | " => ", S_GET_NAME (symbolP2), NULL); | |
3241 | ||
3242 | symp = symbolP2; | |
3243 | while (symp != symbolP) | |
3244 | { | |
3245 | char *old_loop = loop; | |
3246 | symp = symbol_get_value_expression (symp)->X_add_symbol; | |
3247 | loop = concat (loop, " => ", S_GET_NAME (symp), NULL); | |
3248 | free (old_loop); | |
3249 | } | |
3250 | ||
3251 | as_bad (_("%s: would close weakref loop: %s"), | |
3252 | S_GET_NAME (symbolP), loop); | |
3253 | ||
3254 | free (loop); | |
3255 | ||
3256 | *end_name = delim; | |
3257 | ignore_rest_of_line (); | |
3258 | return; | |
3259 | } | |
3260 | ||
3261 | /* Short-circuiting instead of just checking here might speed | |
3262 | things up a tiny little bit, but loop error messages would | |
3263 | miss intermediate links. */ | |
3264 | /* symbolP2 = symp; */ | |
3265 | } | |
3266 | ||
3267 | *end_name = delim; | |
3268 | ||
3269 | memset (&exp, 0, sizeof (exp)); | |
3270 | exp.X_op = O_symbol; | |
3271 | exp.X_add_symbol = symbolP2; | |
3272 | ||
3273 | S_SET_SEGMENT (symbolP, undefined_section); | |
3274 | symbol_set_value_expression (symbolP, &exp); | |
3275 | symbol_set_frag (symbolP, &zero_address_frag); | |
3276 | S_SET_WEAKREFR (symbolP); | |
3277 | ||
3278 | demand_empty_rest_of_line (); | |
3279 | } | |
252b5132 | 3280 | \f |
c95b35a9 NS |
3281 | |
3282 | /* Verify that we are at the end of a line. If not, issue an error and | |
3283 | skip to EOL. */ | |
3284 | ||
041ff4dd | 3285 | void |
39e6acbd | 3286 | demand_empty_rest_of_line (void) |
252b5132 RH |
3287 | { |
3288 | SKIP_WHITESPACE (); | |
3289 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3290 | input_line_pointer++; |
252b5132 | 3291 | else |
252b5132 | 3292 | { |
3882b010 | 3293 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3294 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3295 | *input_line_pointer); |
252b5132 | 3296 | else |
c95b35a9 | 3297 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3298 | *input_line_pointer); |
c95b35a9 | 3299 | ignore_rest_of_line (); |
252b5132 | 3300 | } |
c95b35a9 NS |
3301 | |
3302 | /* Return pointing just after end-of-line. */ | |
3303 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3304 | } | |
3305 | ||
3306 | /* Silently advance to the end of line. Use this after already having | |
3307 | issued an error about something bad. */ | |
3308 | ||
3309 | void | |
3310 | ignore_rest_of_line (void) | |
3311 | { | |
3312 | while (input_line_pointer < buffer_limit | |
3313 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3314 | input_line_pointer++; | |
f0e652b4 | 3315 | |
041ff4dd NC |
3316 | input_line_pointer++; |
3317 | ||
3318 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3319 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3320 | } | |
3321 | ||
be95a9c1 AM |
3322 | /* Sets frag for given symbol to zero_address_frag, except when the |
3323 | symbol frag is already set to a dummy listing frag. */ | |
3324 | ||
3325 | static void | |
3326 | set_zero_frag (symbolS *symbolP) | |
3327 | { | |
3328 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3329 | symbol_set_frag (symbolP, &zero_address_frag); | |
3330 | } | |
3331 | ||
041ff4dd | 3332 | /* In: Pointer to a symbol. |
d6415f6c | 3333 | Input_line_pointer->expression. |
f0e652b4 | 3334 | |
041ff4dd | 3335 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3336 | Tried to set symbol to value of expression. |
3337 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3338 | |
252b5132 | 3339 | void |
39e6acbd | 3340 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3341 | { |
3342 | expressionS exp; | |
be95a9c1 | 3343 | segT seg; |
252b5132 | 3344 | |
041ff4dd | 3345 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3346 | |
9497f5ac NC |
3347 | if (!S_IS_FORWARD_REF (symbolP)) |
3348 | (void) expression (&exp); | |
3349 | else | |
3350 | (void) deferred_expression (&exp); | |
252b5132 RH |
3351 | |
3352 | if (exp.X_op == O_illegal) | |
0e389e77 | 3353 | as_bad (_("illegal expression")); |
252b5132 | 3354 | else if (exp.X_op == O_absent) |
0e389e77 | 3355 | as_bad (_("missing expression")); |
252b5132 RH |
3356 | else if (exp.X_op == O_big) |
3357 | { | |
3358 | if (exp.X_add_number > 0) | |
0e389e77 | 3359 | as_bad (_("bignum invalid")); |
252b5132 | 3360 | else |
0e389e77 | 3361 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3362 | } |
3363 | else if (exp.X_op == O_subtract | |
9497f5ac | 3364 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3365 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3366 | && (symbol_get_frag (exp.X_add_symbol) |
3367 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3368 | { |
3369 | exp.X_op = O_constant; | |
3370 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3371 | - S_GET_VALUE (exp.X_op_symbol)); | |
3372 | } | |
3373 | ||
be95a9c1 AM |
3374 | if (symbol_section_p (symbolP)) |
3375 | { | |
3376 | as_bad ("attempt to set value of section symbol"); | |
3377 | return; | |
3378 | } | |
be95a9c1 | 3379 | |
252b5132 RH |
3380 | switch (exp.X_op) |
3381 | { | |
3382 | case O_illegal: | |
3383 | case O_absent: | |
3384 | case O_big: | |
3385 | exp.X_add_number = 0; | |
3386 | /* Fall through. */ | |
3387 | case O_constant: | |
3388 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3389 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3390 | set_zero_frag (symbolP); |
252b5132 RH |
3391 | break; |
3392 | ||
3393 | case O_register: | |
3394 | S_SET_SEGMENT (symbolP, reg_section); | |
3395 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3396 | set_zero_frag (symbolP); |
252b5132 RH |
3397 | break; |
3398 | ||
3399 | case O_symbol: | |
be95a9c1 AM |
3400 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3401 | /* For x=undef+const, create an expression symbol. | |
3402 | For x=x+const, just update x except when x is an undefined symbol | |
3403 | For x=defined+const, evaluate x. */ | |
3404 | if (symbolP == exp.X_add_symbol | |
3405 | && (seg != undefined_section | |
3406 | || !symbol_constant_p (symbolP))) | |
3407 | { | |
3408 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3409 | break; | |
3410 | } | |
9497f5ac | 3411 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3412 | { |
3413 | symbolS *s = exp.X_add_symbol; | |
3414 | ||
60938e80 L |
3415 | if (S_IS_COMMON (s)) |
3416 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3417 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3418 | ||
be95a9c1 AM |
3419 | S_SET_SEGMENT (symbolP, seg); |
3420 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3421 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3422 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3423 | break; |
252b5132 | 3424 | } |
66bd02d3 AM |
3425 | S_SET_SEGMENT (symbolP, undefined_section); |
3426 | symbol_set_value_expression (symbolP, &exp); | |
3427 | set_zero_frag (symbolP); | |
3428 | break; | |
252b5132 RH |
3429 | |
3430 | default: | |
aba4aa7d AM |
3431 | /* The value is some complex expression. */ |
3432 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3433 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3434 | set_zero_frag (symbolP); |
252b5132 RH |
3435 | break; |
3436 | } | |
3437 | } | |
3438 | \f | |
d6415f6c | 3439 | /* cons() |
f0e652b4 | 3440 | |
041ff4dd NC |
3441 | CONStruct more frag of .bytes, or .words etc. |
3442 | Should need_pass_2 be 1 then emit no frag(s). | |
3443 | This understands EXPRESSIONS. | |
f0e652b4 | 3444 | |
041ff4dd | 3445 | Bug (?) |
f0e652b4 | 3446 | |
041ff4dd NC |
3447 | This has a split personality. We use expression() to read the |
3448 | value. We can detect if the value won't fit in a byte or word. | |
3449 | But we can't detect if expression() discarded significant digits | |
3450 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3451 | |
3452 | /* Select a parser for cons expressions. */ | |
3453 | ||
3454 | /* Some targets need to parse the expression in various fancy ways. | |
3455 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3456 | (for example, the HPPA does this). Otherwise, you can define | |
3457 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3458 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3459 | are defined, which is the normal case, then only simple expressions | |
3460 | are permitted. */ | |
3461 | ||
abd63a32 | 3462 | #ifdef TC_M68K |
252b5132 | 3463 | static void |
39e6acbd | 3464 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3465 | #endif |
252b5132 RH |
3466 | |
3467 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3468 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3469 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3470 | static void |
39e6acbd | 3471 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3472 | #endif |
3473 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3474 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3475 | static void | |
39e6acbd | 3476 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3477 | #endif |
3478 | ||
3479 | /* If we haven't gotten one yet, just call expression. */ | |
3480 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3481 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3482 | #endif | |
3483 | #endif | |
3484 | ||
cdfbf930 | 3485 | void |
b41b1f95 L |
3486 | do_parse_cons_expression (expressionS *exp, |
3487 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3488 | { |
3489 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3490 | } | |
3491 | ||
3492 | ||
041ff4dd NC |
3493 | /* Worker to do .byte etc statements. |
3494 | Clobbers input_line_pointer and checks end-of-line. */ | |
3495 | ||
3496 | static void | |
39e6acbd KH |
3497 | cons_worker (register int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
3498 | int rva) | |
252b5132 RH |
3499 | { |
3500 | int c; | |
3501 | expressionS exp; | |
3502 | char *stop = NULL; | |
3503 | char stopc; | |
3504 | ||
3505 | #ifdef md_flush_pending_output | |
3506 | md_flush_pending_output (); | |
3507 | #endif | |
3508 | ||
3509 | if (flag_mri) | |
3510 | stop = mri_comment_field (&stopc); | |
3511 | ||
3512 | if (is_it_end_of_statement ()) | |
3513 | { | |
3514 | demand_empty_rest_of_line (); | |
3515 | if (flag_mri) | |
3516 | mri_comment_end (stop, stopc); | |
3517 | return; | |
3518 | } | |
3519 | ||
cc1bc22a AM |
3520 | #ifdef TC_ADDRESS_BYTES |
3521 | if (nbytes == 0) | |
3522 | nbytes = TC_ADDRESS_BYTES (); | |
3523 | #endif | |
3524 | ||
252b5132 RH |
3525 | #ifdef md_cons_align |
3526 | md_cons_align (nbytes); | |
3527 | #endif | |
3528 | ||
3529 | c = 0; | |
3530 | do | |
3531 | { | |
abd63a32 | 3532 | #ifdef TC_M68K |
252b5132 RH |
3533 | if (flag_m68k_mri) |
3534 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3535 | else | |
abd63a32 | 3536 | #endif |
252b5132 RH |
3537 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
3538 | ||
3539 | if (rva) | |
3540 | { | |
3541 | if (exp.X_op == O_symbol) | |
3542 | exp.X_op = O_symbol_rva; | |
3543 | else | |
3544 | as_fatal (_("rva without symbol")); | |
3545 | } | |
3546 | emit_expr (&exp, (unsigned int) nbytes); | |
3547 | ++c; | |
3548 | } | |
3549 | while (*input_line_pointer++ == ','); | |
3550 | ||
3551 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3552 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3553 | or dcb.b. */ | |
3554 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3555 | mri_pending_align = 1; | |
3556 | ||
041ff4dd | 3557 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3558 | |
3559 | demand_empty_rest_of_line (); | |
3560 | ||
3561 | if (flag_mri) | |
3562 | mri_comment_end (stop, stopc); | |
3563 | } | |
3564 | ||
252b5132 | 3565 | void |
39e6acbd | 3566 | cons (int size) |
252b5132 RH |
3567 | { |
3568 | cons_worker (size, 0); | |
3569 | } | |
3570 | ||
041ff4dd | 3571 | void |
39e6acbd | 3572 | s_rva (int size) |
252b5132 RH |
3573 | { |
3574 | cons_worker (size, 1); | |
3575 | } | |
3576 | ||
3577 | /* Put the contents of expression EXP into the object file using | |
3578 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
3579 | ||
3580 | void | |
39e6acbd | 3581 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
3582 | { |
3583 | operatorT op; | |
3584 | register char *p; | |
3585 | valueT extra_digit = 0; | |
3586 | ||
3587 | /* Don't do anything if we are going to make another pass. */ | |
3588 | if (need_pass_2) | |
3589 | return; | |
3590 | ||
ed7d5d1a AM |
3591 | dot_value = frag_now_fix (); |
3592 | ||
252b5132 RH |
3593 | #ifndef NO_LISTING |
3594 | #ifdef OBJ_ELF | |
3595 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
3596 | appear as a four byte positive constant in the .line section, | |
3597 | followed by a 2 byte 0xffff. Look for that case here. */ | |
3598 | { | |
3599 | static int dwarf_line = -1; | |
3600 | ||
3601 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
3602 | dwarf_line = -1; | |
3603 | else if (dwarf_line >= 0 | |
3604 | && nbytes == 2 | |
3605 | && exp->X_op == O_constant | |
3606 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
3607 | listing_source_line ((unsigned int) dwarf_line); | |
3608 | else if (nbytes == 4 | |
3609 | && exp->X_op == O_constant | |
3610 | && exp->X_add_number >= 0) | |
3611 | dwarf_line = exp->X_add_number; | |
3612 | else | |
3613 | dwarf_line = -1; | |
3614 | } | |
3615 | ||
3616 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
3617 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
3618 | AT_sibling (0x12) followed by a four byte address of the sibling | |
3619 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
3620 | file. We look for that case here. */ | |
3621 | { | |
3622 | static int dwarf_file = 0; | |
3623 | ||
3624 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
3625 | dwarf_file = 0; | |
3626 | else if (dwarf_file == 0 | |
3627 | && nbytes == 2 | |
3628 | && exp->X_op == O_constant | |
3629 | && exp->X_add_number == 0x11) | |
3630 | dwarf_file = 1; | |
3631 | else if (dwarf_file == 1 | |
3632 | && nbytes == 2 | |
3633 | && exp->X_op == O_constant | |
3634 | && exp->X_add_number == 0x12) | |
3635 | dwarf_file = 2; | |
3636 | else if (dwarf_file == 2 | |
3637 | && nbytes == 4) | |
3638 | dwarf_file = 3; | |
3639 | else if (dwarf_file == 3 | |
3640 | && nbytes == 2 | |
3641 | && exp->X_op == O_constant | |
3642 | && exp->X_add_number == 0x38) | |
3643 | dwarf_file = 4; | |
3644 | else | |
3645 | dwarf_file = 0; | |
3646 | ||
3647 | /* The variable dwarf_file_string tells stringer that the string | |
3648 | may be the name of the source file. */ | |
3649 | if (dwarf_file == 4) | |
3650 | dwarf_file_string = 1; | |
3651 | else | |
3652 | dwarf_file_string = 0; | |
3653 | } | |
3654 | #endif | |
3655 | #endif | |
3656 | ||
3657 | if (check_eh_frame (exp, &nbytes)) | |
3658 | return; | |
3659 | ||
3660 | op = exp->X_op; | |
3661 | ||
3662 | /* Allow `.word 0' in the absolute section. */ | |
3663 | if (now_seg == absolute_section) | |
3664 | { | |
3665 | if (op != O_constant || exp->X_add_number != 0) | |
3666 | as_bad (_("attempt to store value in absolute section")); | |
3667 | abs_section_offset += nbytes; | |
3668 | return; | |
3669 | } | |
3670 | ||
3671 | /* Handle a negative bignum. */ | |
3672 | if (op == O_uminus | |
3673 | && exp->X_add_number == 0 | |
2b47531b ILT |
3674 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
3675 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
3676 | { |
3677 | int i; | |
3678 | unsigned long carry; | |
3679 | ||
2b47531b | 3680 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
3681 | |
3682 | /* Negate the bignum: one's complement each digit and add 1. */ | |
3683 | carry = 1; | |
3684 | for (i = 0; i < exp->X_add_number; i++) | |
3685 | { | |
3686 | unsigned long next; | |
3687 | ||
041ff4dd | 3688 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
3689 | & LITTLENUM_MASK) |
3690 | + carry); | |
3691 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3692 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3693 | } | |
3694 | ||
3695 | /* We can ignore any carry out, because it will be handled by | |
3696 | extra_digit if it is needed. */ | |
3697 | ||
3698 | extra_digit = (valueT) -1; | |
3699 | op = O_big; | |
3700 | } | |
3701 | ||
3702 | if (op == O_absent || op == O_illegal) | |
3703 | { | |
3704 | as_warn (_("zero assumed for missing expression")); | |
3705 | exp->X_add_number = 0; | |
3706 | op = O_constant; | |
3707 | } | |
3708 | else if (op == O_big && exp->X_add_number <= 0) | |
3709 | { | |
0e389e77 | 3710 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3711 | exp->X_add_number = 0; |
3712 | op = O_constant; | |
3713 | } | |
3714 | else if (op == O_register) | |
3715 | { | |
3716 | as_warn (_("register value used as expression")); | |
3717 | op = O_constant; | |
3718 | } | |
3719 | ||
3720 | p = frag_more ((int) nbytes); | |
3721 | ||
3722 | #ifndef WORKING_DOT_WORD | |
3723 | /* If we have the difference of two symbols in a word, save it on | |
3724 | the broken_words list. See the code in write.c. */ | |
3725 | if (op == O_subtract && nbytes == 2) | |
3726 | { | |
3727 | struct broken_word *x; | |
3728 | ||
3729 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3730 | x->next_broken_word = broken_words; | |
3731 | broken_words = x; | |
3732 | x->seg = now_seg; | |
3733 | x->subseg = now_subseg; | |
3734 | x->frag = frag_now; | |
3735 | x->word_goes_here = p; | |
3736 | x->dispfrag = 0; | |
3737 | x->add = exp->X_add_symbol; | |
3738 | x->sub = exp->X_op_symbol; | |
3739 | x->addnum = exp->X_add_number; | |
3740 | x->added = 0; | |
dc59a897 | 3741 | x->use_jump = 0; |
252b5132 RH |
3742 | new_broken_words++; |
3743 | return; | |
3744 | } | |
3745 | #endif | |
3746 | ||
3747 | /* If we have an integer, but the number of bytes is too large to | |
3748 | pass to md_number_to_chars, handle it as a bignum. */ | |
3749 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3750 | { | |
e5604d79 RS |
3751 | extra_digit = exp->X_unsigned ? 0 : -1; |
3752 | convert_to_bignum (exp); | |
3753 | op = O_big; | |
252b5132 RH |
3754 | } |
3755 | ||
3756 | if (op == O_constant) | |
3757 | { | |
3758 | register valueT get; | |
3759 | register valueT use; | |
3760 | register valueT mask; | |
3761 | valueT hibit; | |
3762 | register valueT unmask; | |
3763 | ||
3764 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 3765 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
3766 | if (nbytes >= sizeof (valueT)) |
3767 | { | |
3768 | mask = 0; | |
3769 | if (nbytes > sizeof (valueT)) | |
3770 | hibit = 0; | |
3771 | else | |
3772 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3773 | } | |
3774 | else | |
3775 | { | |
041ff4dd | 3776 | /* Don't store these bits. */ |
252b5132 RH |
3777 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
3778 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3779 | } | |
3780 | ||
041ff4dd | 3781 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
3782 | |
3783 | #ifdef NEVER | |
3784 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 3785 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
3786 | #endif |
3787 | ||
3788 | get = exp->X_add_number; | |
3789 | use = get & unmask; | |
3790 | if ((get & mask) != 0 | |
3791 | && ((get & mask) != mask | |
3792 | || (get & hibit) == 0)) | |
041ff4dd | 3793 | { /* Leading bits contain both 0s & 1s. */ |
0e389e77 | 3794 | as_warn (_("value 0x%lx truncated to 0x%lx"), |
252b5132 RH |
3795 | (unsigned long) get, (unsigned long) use); |
3796 | } | |
041ff4dd | 3797 | /* Put bytes in right order. */ |
252b5132 RH |
3798 | md_number_to_chars (p, use, (int) nbytes); |
3799 | } | |
3800 | else if (op == O_big) | |
3801 | { | |
3802 | unsigned int size; | |
3803 | LITTLENUM_TYPE *nums; | |
3804 | ||
3805 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
3806 | ||
3807 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
3808 | if (nbytes < size) | |
3809 | { | |
0e389e77 | 3810 | as_warn (_("bignum truncated to %d bytes"), nbytes); |
252b5132 RH |
3811 | size = nbytes; |
3812 | } | |
3813 | ||
3814 | if (target_big_endian) | |
3815 | { | |
3816 | while (nbytes > size) | |
3817 | { | |
3818 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3819 | nbytes -= CHARS_PER_LITTLENUM; | |
3820 | p += CHARS_PER_LITTLENUM; | |
3821 | } | |
3822 | ||
3823 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 3824 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3825 | { |
3826 | --nums; | |
3827 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3828 | size -= CHARS_PER_LITTLENUM; | |
3829 | p += CHARS_PER_LITTLENUM; | |
3830 | } | |
3831 | } | |
3832 | else | |
3833 | { | |
3834 | nums = generic_bignum; | |
ceac3f62 | 3835 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3836 | { |
3837 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3838 | ++nums; | |
3839 | size -= CHARS_PER_LITTLENUM; | |
3840 | p += CHARS_PER_LITTLENUM; | |
3841 | nbytes -= CHARS_PER_LITTLENUM; | |
3842 | } | |
3843 | ||
ceac3f62 | 3844 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3845 | { |
3846 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3847 | nbytes -= CHARS_PER_LITTLENUM; | |
3848 | p += CHARS_PER_LITTLENUM; | |
3849 | } | |
3850 | } | |
3851 | } | |
3852 | else | |
3853 | { | |
3854 | memset (p, 0, nbytes); | |
3855 | ||
7be1c489 | 3856 | /* Now we need to generate a fixS to record the symbol value. */ |
252b5132 | 3857 | |
252b5132 RH |
3858 | #ifdef TC_CONS_FIX_NEW |
3859 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3860 | #else | |
3861 | { | |
3862 | bfd_reloc_code_real_type r; | |
3863 | ||
3864 | switch (nbytes) | |
3865 | { | |
3866 | case 1: | |
3867 | r = BFD_RELOC_8; | |
3868 | break; | |
3869 | case 2: | |
3870 | r = BFD_RELOC_16; | |
3871 | break; | |
3872 | case 4: | |
3873 | r = BFD_RELOC_32; | |
3874 | break; | |
3875 | case 8: | |
3876 | r = BFD_RELOC_64; | |
3877 | break; | |
3878 | default: | |
3879 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
3880 | r = BFD_RELOC_32; | |
3881 | break; | |
3882 | } | |
3883 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, | |
3884 | 0, r); | |
3885 | } | |
3886 | #endif | |
252b5132 RH |
3887 | } |
3888 | } | |
3889 | \f | |
3890 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3891 | ||
3892 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
3893 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3894 | then pack them all together. We do a little better in that we allow | |
3895 | them in words, longs, etc. and we'll pack them in target byte order | |
3896 | for you. | |
3897 | ||
47eebc20 | 3898 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
3899 | entirely fit, put it in the next unit. Overflowing the bitfield is |
3900 | explicitly *not* even a warning. The bitwidth should be considered | |
3901 | a "mask". | |
3902 | ||
3903 | To use this function the tc-XXX.h file should define | |
3904 | BITFIELD_CONS_EXPRESSIONS. */ | |
3905 | ||
041ff4dd | 3906 | static void |
252b5132 RH |
3907 | parse_bitfield_cons (exp, nbytes) |
3908 | expressionS *exp; | |
3909 | unsigned int nbytes; | |
3910 | { | |
3911 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3912 | char *hold = input_line_pointer; | |
3913 | ||
3914 | (void) expression (exp); | |
3915 | ||
3916 | if (*input_line_pointer == ':') | |
041ff4dd NC |
3917 | { |
3918 | /* Bitfields. */ | |
252b5132 RH |
3919 | long value = 0; |
3920 | ||
3921 | for (;;) | |
3922 | { | |
3923 | unsigned long width; | |
3924 | ||
3925 | if (*input_line_pointer != ':') | |
3926 | { | |
3927 | input_line_pointer = hold; | |
3928 | break; | |
041ff4dd | 3929 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
3930 | |
3931 | /* In the general case, we can't allow | |
3932 | full expressions with symbol | |
3933 | differences and such. The relocation | |
3934 | entries for symbols not defined in this | |
3935 | assembly would require arbitrary field | |
3936 | widths, positions, and masks which most | |
3937 | of our current object formats don't | |
3938 | support. | |
3939 | ||
3940 | In the specific case where a symbol | |
3941 | *is* defined in this assembly, we | |
3942 | *could* build fixups and track it, but | |
3943 | this could lead to confusion for the | |
3944 | backends. I'm lazy. I'll take any | |
3945 | SEG_ABSOLUTE. I think that means that | |
3946 | you can use a previous .set or | |
041ff4dd | 3947 | .equ type symbol. xoxorich. */ |
252b5132 RH |
3948 | |
3949 | if (exp->X_op == O_absent) | |
3950 | { | |
3951 | as_warn (_("using a bit field width of zero")); | |
3952 | exp->X_add_number = 0; | |
3953 | exp->X_op = O_constant; | |
041ff4dd | 3954 | } /* Implied zero width bitfield. */ |
252b5132 RH |
3955 | |
3956 | if (exp->X_op != O_constant) | |
3957 | { | |
3958 | *input_line_pointer = '\0'; | |
3959 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
3960 | *input_line_pointer = ':'; | |
3961 | demand_empty_rest_of_line (); | |
3962 | return; | |
041ff4dd | 3963 | } /* Too complex. */ |
252b5132 RH |
3964 | |
3965 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
3966 | { | |
3967 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
3968 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
3969 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 3970 | } /* Too big. */ |
252b5132 RH |
3971 | |
3972 | if (width > bits_available) | |
3973 | { | |
3974 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
3975 | input_line_pointer = hold; | |
3976 | exp->X_add_number = value; | |
3977 | break; | |
041ff4dd | 3978 | } /* Won't fit. */ |
252b5132 | 3979 | |
ef99799a KH |
3980 | /* Skip ':'. */ |
3981 | hold = ++input_line_pointer; | |
252b5132 RH |
3982 | |
3983 | (void) expression (exp); | |
3984 | if (exp->X_op != O_constant) | |
3985 | { | |
3986 | char cache = *input_line_pointer; | |
3987 | ||
3988 | *input_line_pointer = '\0'; | |
3989 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
3990 | *input_line_pointer = cache; | |
3991 | demand_empty_rest_of_line (); | |
3992 | return; | |
041ff4dd | 3993 | } /* Too complex. */ |
252b5132 RH |
3994 | |
3995 | value |= ((~(-1 << width) & exp->X_add_number) | |
3996 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
3997 | ||
3998 | if ((bits_available -= width) == 0 | |
3999 | || is_it_end_of_statement () | |
4000 | || *input_line_pointer != ',') | |
4001 | { | |
4002 | break; | |
041ff4dd | 4003 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4004 | |
4005 | hold = ++input_line_pointer; | |
4006 | (void) expression (exp); | |
041ff4dd | 4007 | } |
252b5132 RH |
4008 | |
4009 | exp->X_add_number = value; | |
4010 | exp->X_op = O_constant; | |
4011 | exp->X_unsigned = 1; | |
041ff4dd NC |
4012 | } |
4013 | } | |
252b5132 RH |
4014 | |
4015 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4016 | \f | |
4017 | /* Handle an MRI style string expression. */ | |
4018 | ||
abd63a32 | 4019 | #ifdef TC_M68K |
252b5132 RH |
4020 | static void |
4021 | parse_mri_cons (exp, nbytes) | |
4022 | expressionS *exp; | |
4023 | unsigned int nbytes; | |
4024 | { | |
4025 | if (*input_line_pointer != '\'' | |
4026 | && (input_line_pointer[1] != '\'' | |
4027 | || (*input_line_pointer != 'A' | |
4028 | && *input_line_pointer != 'E'))) | |
4029 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
4030 | else | |
4031 | { | |
4032 | unsigned int scan; | |
4033 | unsigned int result = 0; | |
4034 | ||
4035 | /* An MRI style string. Cut into as many bytes as will fit into | |
4036 | a nbyte chunk, left justify if necessary, and separate with | |
4037 | commas so we can try again later. */ | |
4038 | if (*input_line_pointer == 'A') | |
4039 | ++input_line_pointer; | |
4040 | else if (*input_line_pointer == 'E') | |
4041 | { | |
4042 | as_bad (_("EBCDIC constants are not supported")); | |
4043 | ++input_line_pointer; | |
4044 | } | |
4045 | ||
4046 | input_line_pointer++; | |
4047 | for (scan = 0; scan < nbytes; scan++) | |
4048 | { | |
4049 | if (*input_line_pointer == '\'') | |
4050 | { | |
4051 | if (input_line_pointer[1] == '\'') | |
4052 | { | |
4053 | input_line_pointer++; | |
4054 | } | |
4055 | else | |
4056 | break; | |
4057 | } | |
4058 | result = (result << 8) | (*input_line_pointer++); | |
4059 | } | |
4060 | ||
041ff4dd | 4061 | /* Left justify. */ |
252b5132 RH |
4062 | while (scan < nbytes) |
4063 | { | |
4064 | result <<= 8; | |
4065 | scan++; | |
4066 | } | |
f0e652b4 | 4067 | |
041ff4dd | 4068 | /* Create correct expression. */ |
252b5132 RH |
4069 | exp->X_op = O_constant; |
4070 | exp->X_add_number = result; | |
f0e652b4 | 4071 | |
041ff4dd | 4072 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4073 | if (input_line_pointer[0] != '\'' || |
4074 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4075 | { | |
4076 | input_line_pointer -= 2; | |
4077 | input_line_pointer[0] = ','; | |
4078 | input_line_pointer[1] = '\''; | |
4079 | } | |
4080 | else | |
4081 | input_line_pointer++; | |
4082 | } | |
4083 | } | |
abd63a32 | 4084 | #endif /* TC_M68K */ |
252b5132 RH |
4085 | \f |
4086 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4087 | ||
4088 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4089 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4090 | object file COUNT times. | |
4091 | ||
4092 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4093 | ||
4094 | static void | |
4095 | parse_repeat_cons (exp, nbytes) | |
4096 | expressionS *exp; | |
4097 | unsigned int nbytes; | |
4098 | { | |
4099 | expressionS count; | |
4100 | register int i; | |
4101 | ||
4102 | expression (exp); | |
4103 | ||
4104 | if (*input_line_pointer != ':') | |
4105 | { | |
4106 | /* No repeat count. */ | |
4107 | return; | |
4108 | } | |
4109 | ||
4110 | ++input_line_pointer; | |
4111 | expression (&count); | |
4112 | if (count.X_op != O_constant | |
4113 | || count.X_add_number <= 0) | |
4114 | { | |
0e389e77 | 4115 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4116 | return; |
4117 | } | |
4118 | ||
4119 | /* The cons function is going to output this expression once. So we | |
4120 | output it count - 1 times. */ | |
4121 | for (i = count.X_add_number - 1; i > 0; i--) | |
4122 | emit_expr (exp, nbytes); | |
4123 | } | |
4124 | ||
4125 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4126 | \f | |
4127 | /* Parse a floating point number represented as a hex constant. This | |
4128 | permits users to specify the exact bits they want in the floating | |
4129 | point number. */ | |
4130 | ||
4131 | static int | |
39e6acbd | 4132 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4133 | { |
4134 | int length; | |
4135 | int i; | |
4136 | ||
4137 | switch (float_type) | |
4138 | { | |
4139 | case 'f': | |
4140 | case 'F': | |
4141 | case 's': | |
4142 | case 'S': | |
4143 | length = 4; | |
4144 | break; | |
4145 | ||
4146 | case 'd': | |
4147 | case 'D': | |
4148 | case 'r': | |
4149 | case 'R': | |
4150 | length = 8; | |
4151 | break; | |
4152 | ||
4153 | case 'x': | |
4154 | case 'X': | |
4155 | length = 12; | |
4156 | break; | |
4157 | ||
4158 | case 'p': | |
4159 | case 'P': | |
4160 | length = 12; | |
4161 | break; | |
4162 | ||
4163 | default: | |
0e389e77 | 4164 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4165 | return -1; |
4166 | } | |
4167 | ||
4168 | /* It would be nice if we could go through expression to parse the | |
4169 | hex constant, but if we get a bignum it's a pain to sort it into | |
4170 | the buffer correctly. */ | |
4171 | i = 0; | |
4172 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4173 | { | |
4174 | int d; | |
4175 | ||
4176 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4177 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4178 | if (*input_line_pointer == '_') |
4179 | { | |
4180 | ++input_line_pointer; | |
4181 | continue; | |
4182 | } | |
4183 | ||
4184 | if (i >= length) | |
4185 | { | |
0e389e77 | 4186 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4187 | return -1; |
4188 | } | |
4189 | d = hex_value (*input_line_pointer) << 4; | |
4190 | ++input_line_pointer; | |
4191 | while (*input_line_pointer == '_') | |
4192 | ++input_line_pointer; | |
4193 | if (hex_p (*input_line_pointer)) | |
4194 | { | |
4195 | d += hex_value (*input_line_pointer); | |
4196 | ++input_line_pointer; | |
4197 | } | |
4198 | if (target_big_endian) | |
4199 | bytes[i] = d; | |
4200 | else | |
4201 | bytes[length - i - 1] = d; | |
4202 | ++i; | |
4203 | } | |
4204 | ||
4205 | if (i < length) | |
4206 | { | |
4207 | if (target_big_endian) | |
4208 | memset (bytes + i, 0, length - i); | |
4209 | else | |
4210 | memset (bytes, 0, length - i); | |
4211 | } | |
4212 | ||
4213 | return length; | |
4214 | } | |
4215 | ||
d6415f6c | 4216 | /* float_cons() |
f0e652b4 | 4217 | |
041ff4dd NC |
4218 | CONStruct some more frag chars of .floats .ffloats etc. |
4219 | Makes 0 or more new frags. | |
4220 | If need_pass_2 == 1, no frags are emitted. | |
4221 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4222 | |
041ff4dd NC |
4223 | A floating constant is defined by atof_generic(), except it is preceded |
4224 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4225 | reading, I decided to be incompatible. This always tries to give you | |
4226 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4227 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4228 | a choice of 2 flavours of noise according to which of 2 floating-point |
4229 | scanners you directed AS to use. | |
f0e652b4 | 4230 | |
041ff4dd | 4231 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4232 | |
4233 | void | |
39e6acbd KH |
4234 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
4235 | register int float_type /* 'f':.ffloat ... 'F':.float ... */) | |
252b5132 RH |
4236 | { |
4237 | register char *p; | |
041ff4dd NC |
4238 | int length; /* Number of chars in an object. */ |
4239 | register char *err; /* Error from scanning floating literal. */ | |
252b5132 RH |
4240 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4241 | ||
4242 | if (is_it_end_of_statement ()) | |
4243 | { | |
4244 | demand_empty_rest_of_line (); | |
4245 | return; | |
4246 | } | |
4247 | ||
4248 | #ifdef md_flush_pending_output | |
4249 | md_flush_pending_output (); | |
4250 | #endif | |
4251 | ||
4252 | do | |
4253 | { | |
041ff4dd | 4254 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4255 | SKIP_WHITESPACE (); |
4256 | ||
4257 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4258 | letter is legal. Someone may invent a "z" format and this routine |
4259 | has no use for such information. Lusers beware: you get | |
4260 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4261 | if (input_line_pointer[0] == '0' |
3882b010 | 4262 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4263 | input_line_pointer += 2; |
4264 | ||
4265 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4266 | point with the exact digits specified. */ |
252b5132 RH |
4267 | if (input_line_pointer[0] == ':') |
4268 | { | |
4269 | ++input_line_pointer; | |
4270 | length = hex_float (float_type, temp); | |
4271 | if (length < 0) | |
4272 | { | |
4273 | ignore_rest_of_line (); | |
4274 | return; | |
4275 | } | |
4276 | } | |
4277 | else | |
4278 | { | |
4279 | err = md_atof (float_type, temp, &length); | |
4280 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
4281 | know (length > 0); | |
4282 | if (err) | |
4283 | { | |
0e389e77 | 4284 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4285 | ignore_rest_of_line (); |
4286 | return; | |
4287 | } | |
4288 | } | |
4289 | ||
4290 | if (!need_pass_2) | |
4291 | { | |
4292 | int count; | |
4293 | ||
4294 | count = 1; | |
4295 | ||
4296 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4297 | if (*input_line_pointer == ':') | |
4298 | { | |
4299 | expressionS count_exp; | |
4300 | ||
4301 | ++input_line_pointer; | |
4302 | expression (&count_exp); | |
f0e652b4 | 4303 | |
252b5132 RH |
4304 | if (count_exp.X_op != O_constant |
4305 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4306 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4307 | else |
4308 | count = count_exp.X_add_number; | |
4309 | } | |
4310 | #endif | |
4311 | ||
4312 | while (--count >= 0) | |
4313 | { | |
4314 | p = frag_more (length); | |
4315 | memcpy (p, temp, (unsigned int) length); | |
4316 | } | |
4317 | } | |
4318 | SKIP_WHITESPACE (); | |
4319 | } | |
4320 | while (*input_line_pointer++ == ','); | |
4321 | ||
041ff4dd NC |
4322 | /* Put terminator back into stream. */ |
4323 | --input_line_pointer; | |
252b5132 | 4324 | demand_empty_rest_of_line (); |
041ff4dd | 4325 | } |
252b5132 | 4326 | \f |
041ff4dd | 4327 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4328 | |
4329 | static inline int | |
39e6acbd | 4330 | sizeof_sleb128 (offsetT value) |
252b5132 RH |
4331 | { |
4332 | register int size = 0; | |
4333 | register unsigned byte; | |
4334 | ||
4335 | do | |
4336 | { | |
4337 | byte = (value & 0x7f); | |
4338 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4339 | Fortunately, we can structure things so that the extra work reduces | |
4340 | to a noop on systems that do things "properly". */ | |
4341 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4342 | size += 1; | |
4343 | } | |
4344 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4345 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4346 | ||
4347 | return size; | |
4348 | } | |
4349 | ||
4350 | static inline int | |
39e6acbd | 4351 | sizeof_uleb128 (valueT value) |
252b5132 RH |
4352 | { |
4353 | register int size = 0; | |
4354 | register unsigned byte; | |
4355 | ||
4356 | do | |
4357 | { | |
4358 | byte = (value & 0x7f); | |
4359 | value >>= 7; | |
4360 | size += 1; | |
4361 | } | |
4362 | while (value != 0); | |
4363 | ||
4364 | return size; | |
4365 | } | |
4366 | ||
4367 | int | |
39e6acbd | 4368 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4369 | { |
4370 | if (sign) | |
4371 | return sizeof_sleb128 ((offsetT) value); | |
4372 | else | |
4373 | return sizeof_uleb128 (value); | |
4374 | } | |
4375 | ||
4376 | /* Output a LEB128 value. */ | |
4377 | ||
4378 | static inline int | |
39e6acbd | 4379 | output_sleb128 (char *p, offsetT value) |
252b5132 RH |
4380 | { |
4381 | register char *orig = p; | |
4382 | register int more; | |
4383 | ||
4384 | do | |
4385 | { | |
4386 | unsigned byte = (value & 0x7f); | |
4387 | ||
4388 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4389 | Fortunately, we can structure things so that the extra work reduces | |
4390 | to a noop on systems that do things "properly". */ | |
4391 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4392 | ||
4393 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4394 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4395 | if (more) | |
4396 | byte |= 0x80; | |
4397 | ||
4398 | *p++ = byte; | |
4399 | } | |
4400 | while (more); | |
4401 | ||
4402 | return p - orig; | |
4403 | } | |
4404 | ||
4405 | static inline int | |
39e6acbd | 4406 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4407 | { |
4408 | char *orig = p; | |
4409 | ||
4410 | do | |
4411 | { | |
4412 | unsigned byte = (value & 0x7f); | |
4413 | value >>= 7; | |
4414 | if (value != 0) | |
4415 | /* More bytes to follow. */ | |
4416 | byte |= 0x80; | |
4417 | ||
4418 | *p++ = byte; | |
4419 | } | |
4420 | while (value != 0); | |
4421 | ||
4422 | return p - orig; | |
4423 | } | |
4424 | ||
4425 | int | |
39e6acbd | 4426 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4427 | { |
4428 | if (sign) | |
4429 | return output_sleb128 (p, (offsetT) value); | |
4430 | else | |
4431 | return output_uleb128 (p, value); | |
4432 | } | |
4433 | ||
4434 | /* Do the same for bignums. We combine sizeof with output here in that | |
4435 | we don't output for NULL values of P. It isn't really as critical as | |
4436 | for "normal" values that this be streamlined. */ | |
4437 | ||
6d4d30bb | 4438 | static inline int |
39e6acbd | 4439 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4440 | { |
4441 | char *orig = p; | |
4442 | valueT val = 0; | |
4443 | int loaded = 0; | |
4444 | unsigned byte; | |
4445 | ||
4446 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4447 | while (size > 1 |
4448 | && bignum[size - 1] == LITTLENUM_MASK | |
4449 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4450 | size--; |
4451 | ||
4452 | do | |
4453 | { | |
e5604d79 RS |
4454 | /* OR in the next part of the littlenum. */ |
4455 | val |= (*bignum << loaded); | |
4456 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4457 | size--; | |
4458 | bignum++; | |
4459 | ||
4460 | /* Add bytes until there are less than 7 bits left in VAL | |
4461 | or until every non-sign bit has been written. */ | |
4462 | do | |
252b5132 | 4463 | { |
e5604d79 RS |
4464 | byte = val & 0x7f; |
4465 | loaded -= 7; | |
4466 | val >>= 7; | |
4467 | if (size > 0 | |
4468 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 4469 | byte |= 0x80; |
e5604d79 RS |
4470 | |
4471 | if (orig) | |
4472 | *p = byte; | |
4473 | p++; | |
252b5132 | 4474 | } |
e5604d79 RS |
4475 | while ((byte & 0x80) != 0 && loaded >= 7); |
4476 | } | |
4477 | while (size > 0); | |
252b5132 | 4478 | |
e5604d79 RS |
4479 | /* Mop up any left-over bits (of which there will be less than 7). */ |
4480 | if ((byte & 0x80) != 0) | |
4481 | { | |
4482 | /* Sign-extend VAL. */ | |
4483 | if (val & (1 << (loaded - 1))) | |
4484 | val |= ~0 << loaded; | |
252b5132 | 4485 | if (orig) |
e5604d79 | 4486 | *p = val & 0x7f; |
252b5132 RH |
4487 | p++; |
4488 | } | |
252b5132 RH |
4489 | |
4490 | return p - orig; | |
4491 | } | |
4492 | ||
6d4d30bb | 4493 | static inline int |
39e6acbd | 4494 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4495 | { |
4496 | char *orig = p; | |
4497 | valueT val = 0; | |
4498 | int loaded = 0; | |
4499 | unsigned byte; | |
4500 | ||
4501 | /* Strip leading zeros off the bignum. */ | |
4502 | /* XXX: Is this needed? */ | |
041ff4dd | 4503 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4504 | size--; |
4505 | ||
4506 | do | |
4507 | { | |
4508 | if (loaded < 7 && size > 0) | |
4509 | { | |
4510 | val |= (*bignum << loaded); | |
4511 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4512 | size--; | |
4513 | bignum++; | |
4514 | } | |
4515 | ||
4516 | byte = val & 0x7f; | |
4517 | loaded -= 7; | |
4518 | val >>= 7; | |
4519 | ||
4520 | if (size > 0 || val) | |
4521 | byte |= 0x80; | |
4522 | ||
4523 | if (orig) | |
4524 | *p = byte; | |
4525 | p++; | |
4526 | } | |
4527 | while (byte & 0x80); | |
4528 | ||
4529 | return p - orig; | |
4530 | } | |
4531 | ||
6d4d30bb | 4532 | static int |
39e6acbd | 4533 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
4534 | { |
4535 | if (sign) | |
4536 | return output_big_sleb128 (p, bignum, size); | |
4537 | else | |
4538 | return output_big_uleb128 (p, bignum, size); | |
4539 | } | |
4540 | ||
4541 | /* Generate the appropriate fragments for a given expression to emit a | |
4542 | leb128 value. */ | |
4543 | ||
87c245cc | 4544 | static void |
39e6acbd | 4545 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
4546 | { |
4547 | operatorT op = exp->X_op; | |
b7712f8d | 4548 | unsigned int nbytes; |
252b5132 RH |
4549 | |
4550 | if (op == O_absent || op == O_illegal) | |
4551 | { | |
4552 | as_warn (_("zero assumed for missing expression")); | |
4553 | exp->X_add_number = 0; | |
4554 | op = O_constant; | |
4555 | } | |
4556 | else if (op == O_big && exp->X_add_number <= 0) | |
4557 | { | |
0e389e77 | 4558 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4559 | exp->X_add_number = 0; |
4560 | op = O_constant; | |
4561 | } | |
4562 | else if (op == O_register) | |
4563 | { | |
4564 | as_warn (_("register value used as expression")); | |
4565 | op = O_constant; | |
4566 | } | |
e5604d79 RS |
4567 | else if (op == O_constant |
4568 | && sign | |
4569 | && (exp->X_add_number < 0) != !exp->X_unsigned) | |
4570 | { | |
4571 | /* We're outputting a signed leb128 and the sign of X_add_number | |
4572 | doesn't reflect the sign of the original value. Convert EXP | |
4573 | to a correctly-extended bignum instead. */ | |
4574 | convert_to_bignum (exp); | |
4575 | op = O_big; | |
4576 | } | |
252b5132 | 4577 | |
67a659f6 RH |
4578 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
4579 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 4580 | nbytes = (unsigned int) -1; |
67a659f6 RH |
4581 | if (check_eh_frame (exp, &nbytes)) |
4582 | abort (); | |
4583 | ||
371b7465 RH |
4584 | /* Let the backend know that subsequent data may be byte aligned. */ |
4585 | #ifdef md_cons_align | |
4586 | md_cons_align (1); | |
4587 | #endif | |
4588 | ||
252b5132 RH |
4589 | if (op == O_constant) |
4590 | { | |
4591 | /* If we've got a constant, emit the thing directly right now. */ | |
4592 | ||
4593 | valueT value = exp->X_add_number; | |
4594 | int size; | |
4595 | char *p; | |
4596 | ||
4597 | size = sizeof_leb128 (value, sign); | |
4598 | p = frag_more (size); | |
4599 | output_leb128 (p, value, sign); | |
4600 | } | |
4601 | else if (op == O_big) | |
4602 | { | |
4603 | /* O_big is a different sort of constant. */ | |
4604 | ||
4605 | int size; | |
4606 | char *p; | |
4607 | ||
4608 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
4609 | p = frag_more (size); | |
4610 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
4611 | } | |
4612 | else | |
4613 | { | |
041ff4dd | 4614 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
4615 | resolve things later. */ |
4616 | ||
041ff4dd | 4617 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
4618 | make_expr_symbol (exp), 0, (char *) NULL); |
4619 | } | |
4620 | } | |
4621 | ||
4622 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
4623 | ||
4624 | void | |
39e6acbd | 4625 | s_leb128 (int sign) |
252b5132 RH |
4626 | { |
4627 | expressionS exp; | |
4628 | ||
00bbdfe7 BW |
4629 | #ifdef md_flush_pending_output |
4630 | md_flush_pending_output (); | |
4631 | #endif | |
4632 | ||
041ff4dd NC |
4633 | do |
4634 | { | |
4635 | expression (&exp); | |
4636 | emit_leb128_expr (&exp, sign); | |
4637 | } | |
4638 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
4639 | |
4640 | input_line_pointer--; | |
4641 | demand_empty_rest_of_line (); | |
4642 | } | |
4643 | \f | |
041ff4dd NC |
4644 | /* We read 0 or more ',' separated, double-quoted strings. |
4645 | Caller should have checked need_pass_2 is FALSE because we don't | |
4646 | check it. */ | |
4647 | ||
4648 | void | |
39e6acbd KH |
4649 | stringer (/* Worker to do .ascii etc statements. */ |
4650 | /* Checks end-of-line. */ | |
4651 | register int append_zero /* 0: don't append '\0', else 1. */) | |
252b5132 RH |
4652 | { |
4653 | register unsigned int c; | |
4654 | char *start; | |
4655 | ||
4656 | #ifdef md_flush_pending_output | |
4657 | md_flush_pending_output (); | |
4658 | #endif | |
4659 | ||
041ff4dd NC |
4660 | /* The following awkward logic is to parse ZERO or more strings, |
4661 | comma separated. Recall a string expression includes spaces | |
4662 | before the opening '\"' and spaces after the closing '\"'. | |
4663 | We fake a leading ',' if there is (supposed to be) | |
4664 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
4665 | if (is_it_end_of_statement ()) |
4666 | { | |
041ff4dd NC |
4667 | c = 0; /* Skip loop. */ |
4668 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
4669 | } |
4670 | else | |
4671 | { | |
041ff4dd | 4672 | c = ','; /* Do loop. */ |
252b5132 | 4673 | } |
8ac9ba6c NC |
4674 | /* If we have been switched into the abs_section then we |
4675 | will not have an obstack onto which we can hang strings. */ | |
4676 | if (now_seg == absolute_section) | |
4677 | { | |
4678 | as_bad (_("strings must be placed into a section")); | |
4679 | c = 0; | |
4680 | ignore_rest_of_line (); | |
4681 | } | |
d6415f6c | 4682 | |
252b5132 RH |
4683 | while (c == ',' || c == '<' || c == '"') |
4684 | { | |
4685 | SKIP_WHITESPACE (); | |
4686 | switch (*input_line_pointer) | |
4687 | { | |
4688 | case '\"': | |
041ff4dd | 4689 | ++input_line_pointer; /*->1st char of string. */ |
252b5132 RH |
4690 | start = input_line_pointer; |
4691 | while (is_a_char (c = next_char_of_string ())) | |
4692 | { | |
4693 | FRAG_APPEND_1_CHAR (c); | |
4694 | } | |
4695 | if (append_zero) | |
4696 | { | |
4697 | FRAG_APPEND_1_CHAR (0); | |
4698 | } | |
4699 | know (input_line_pointer[-1] == '\"'); | |
4700 | ||
4701 | #ifndef NO_LISTING | |
4702 | #ifdef OBJ_ELF | |
4703 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | |
d6415f6c AM |
4704 | will emit .string with a filename in the .debug section |
4705 | after a sequence of constants. See the comment in | |
4706 | emit_expr for the sequence. emit_expr will set | |
4707 | dwarf_file_string to non-zero if this string might be a | |
4708 | source file name. */ | |
252b5132 RH |
4709 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
4710 | dwarf_file_string = 0; | |
4711 | else if (dwarf_file_string) | |
4712 | { | |
4713 | c = input_line_pointer[-1]; | |
4714 | input_line_pointer[-1] = '\0'; | |
4715 | listing_source_file (start); | |
4716 | input_line_pointer[-1] = c; | |
4717 | } | |
4718 | #endif | |
4719 | #endif | |
4720 | ||
4721 | break; | |
4722 | case '<': | |
4723 | input_line_pointer++; | |
4724 | c = get_single_number (); | |
4725 | FRAG_APPEND_1_CHAR (c); | |
4726 | if (*input_line_pointer != '>') | |
4727 | { | |
0e389e77 | 4728 | as_bad (_("expected <nn>")); |
252b5132 RH |
4729 | } |
4730 | input_line_pointer++; | |
4731 | break; | |
4732 | case ',': | |
4733 | input_line_pointer++; | |
4734 | break; | |
4735 | } | |
4736 | SKIP_WHITESPACE (); | |
4737 | c = *input_line_pointer; | |
4738 | } | |
4739 | ||
4740 | demand_empty_rest_of_line (); | |
4741 | } /* stringer() */ | |
4742 | \f | |
4743 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
4744 | high bits set. We'll probably also have trouble with | |
4745 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 4746 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 4747 | |
041ff4dd | 4748 | unsigned int |
39e6acbd | 4749 | next_char_of_string (void) |
252b5132 RH |
4750 | { |
4751 | register unsigned int c; | |
4752 | ||
4753 | c = *input_line_pointer++ & CHAR_MASK; | |
4754 | switch (c) | |
4755 | { | |
4756 | case '\"': | |
4757 | c = NOT_A_CHAR; | |
4758 | break; | |
4759 | ||
4760 | case '\n': | |
0e389e77 | 4761 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4762 | bump_line_counters (); |
4763 | break; | |
4764 | ||
4765 | #ifndef NO_STRING_ESCAPES | |
4766 | case '\\': | |
4767 | switch (c = *input_line_pointer++) | |
4768 | { | |
4769 | case 'b': | |
4770 | c = '\b'; | |
4771 | break; | |
4772 | ||
4773 | case 'f': | |
4774 | c = '\f'; | |
4775 | break; | |
4776 | ||
4777 | case 'n': | |
4778 | c = '\n'; | |
4779 | break; | |
4780 | ||
4781 | case 'r': | |
4782 | c = '\r'; | |
4783 | break; | |
4784 | ||
4785 | case 't': | |
4786 | c = '\t'; | |
4787 | break; | |
4788 | ||
4789 | case 'v': | |
4790 | c = '\013'; | |
4791 | break; | |
4792 | ||
4793 | case '\\': | |
4794 | case '"': | |
041ff4dd | 4795 | break; /* As itself. */ |
252b5132 RH |
4796 | |
4797 | case '0': | |
4798 | case '1': | |
4799 | case '2': | |
4800 | case '3': | |
4801 | case '4': | |
4802 | case '5': | |
4803 | case '6': | |
4804 | case '7': | |
4805 | case '8': | |
4806 | case '9': | |
4807 | { | |
4808 | long number; | |
4809 | int i; | |
4810 | ||
041ff4dd | 4811 | for (i = 0, number = 0; |
3882b010 | 4812 | ISDIGIT (c) && i < 3; |
041ff4dd | 4813 | c = *input_line_pointer++, i++) |
252b5132 RH |
4814 | { |
4815 | number = number * 8 + c - '0'; | |
4816 | } | |
f0e652b4 | 4817 | |
252b5132 RH |
4818 | c = number & 0xff; |
4819 | } | |
4820 | --input_line_pointer; | |
4821 | break; | |
4822 | ||
4823 | case 'x': | |
4824 | case 'X': | |
4825 | { | |
4826 | long number; | |
4827 | ||
4828 | number = 0; | |
4829 | c = *input_line_pointer++; | |
3882b010 | 4830 | while (ISXDIGIT (c)) |
252b5132 | 4831 | { |
3882b010 | 4832 | if (ISDIGIT (c)) |
252b5132 | 4833 | number = number * 16 + c - '0'; |
3882b010 | 4834 | else if (ISUPPER (c)) |
252b5132 RH |
4835 | number = number * 16 + c - 'A' + 10; |
4836 | else | |
4837 | number = number * 16 + c - 'a' + 10; | |
4838 | c = *input_line_pointer++; | |
4839 | } | |
4840 | c = number & 0xff; | |
4841 | --input_line_pointer; | |
4842 | } | |
4843 | break; | |
4844 | ||
4845 | case '\n': | |
041ff4dd | 4846 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 4847 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4848 | c = '\n'; |
4849 | bump_line_counters (); | |
4850 | break; | |
4851 | ||
4852 | default: | |
4853 | ||
4854 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 4855 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
4856 | c = '?'; |
4857 | #endif /* ONLY_STANDARD_ESCAPES */ | |
4858 | ||
4859 | break; | |
041ff4dd | 4860 | } |
252b5132 RH |
4861 | break; |
4862 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
4863 | ||
4864 | default: | |
4865 | break; | |
041ff4dd | 4866 | } |
252b5132 | 4867 | return (c); |
041ff4dd | 4868 | } |
252b5132 RH |
4869 | \f |
4870 | static segT | |
39e6acbd | 4871 | get_segmented_expression (register expressionS *expP) |
252b5132 RH |
4872 | { |
4873 | register segT retval; | |
4874 | ||
4875 | retval = expression (expP); | |
4876 | if (expP->X_op == O_illegal | |
4877 | || expP->X_op == O_absent | |
4878 | || expP->X_op == O_big) | |
4879 | { | |
0e389e77 | 4880 | as_bad (_("expected address expression")); |
252b5132 RH |
4881 | expP->X_op = O_constant; |
4882 | expP->X_add_number = 0; | |
4883 | retval = absolute_section; | |
4884 | } | |
4885 | return retval; | |
4886 | } | |
4887 | ||
041ff4dd | 4888 | static segT |
39e6acbd | 4889 | get_known_segmented_expression (register expressionS *expP) |
252b5132 RH |
4890 | { |
4891 | register segT retval; | |
4892 | ||
4893 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
4894 | { | |
4895 | /* There is no easy way to extract the undefined symbol from the | |
4896 | expression. */ | |
4897 | if (expP->X_add_symbol != NULL | |
4898 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
4899 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
4900 | S_GET_NAME (expP->X_add_symbol)); | |
4901 | else | |
4902 | as_warn (_("some symbol undefined; zero assumed")); | |
4903 | retval = absolute_section; | |
4904 | expP->X_op = O_constant; | |
4905 | expP->X_add_number = 0; | |
4906 | } | |
4907 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
4908 | return (retval); | |
041ff4dd | 4909 | } |
252b5132 | 4910 | |
041ff4dd | 4911 | char /* Return terminator. */ |
39e6acbd | 4912 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
4913 | { |
4914 | /* FIXME: val_pointer should probably be offsetT *. */ | |
4915 | *val_pointer = (long) get_absolute_expression (); | |
4916 | return (*input_line_pointer++); | |
4917 | } | |
4918 | \f | |
041ff4dd NC |
4919 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
4920 | Give a warning if that happens. */ | |
4921 | ||
252b5132 | 4922 | char * |
39e6acbd | 4923 | demand_copy_C_string (int *len_pointer) |
252b5132 RH |
4924 | { |
4925 | register char *s; | |
4926 | ||
4927 | if ((s = demand_copy_string (len_pointer)) != 0) | |
4928 | { | |
4929 | register int len; | |
4930 | ||
4931 | for (len = *len_pointer; len > 0; len--) | |
4932 | { | |
4933 | if (*s == 0) | |
4934 | { | |
4935 | s = 0; | |
4936 | len = 1; | |
4937 | *len_pointer = 0; | |
0e389e77 | 4938 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
4939 | } |
4940 | } | |
4941 | } | |
f0e652b4 | 4942 | |
252b5132 RH |
4943 | return s; |
4944 | } | |
4945 | \f | |
041ff4dd NC |
4946 | /* Demand string, but return a safe (=private) copy of the string. |
4947 | Return NULL if we can't read a string here. */ | |
4948 | ||
252b5132 | 4949 | char * |
39e6acbd | 4950 | demand_copy_string (int *lenP) |
252b5132 RH |
4951 | { |
4952 | register unsigned int c; | |
4953 | register int len; | |
4954 | char *retval; | |
4955 | ||
4956 | len = 0; | |
4957 | SKIP_WHITESPACE (); | |
4958 | if (*input_line_pointer == '\"') | |
4959 | { | |
041ff4dd | 4960 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
4961 | |
4962 | while (is_a_char (c = next_char_of_string ())) | |
4963 | { | |
4964 | obstack_1grow (¬es, c); | |
4965 | len++; | |
4966 | } | |
4967 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 4968 | null terminated string. */ |
252b5132 RH |
4969 | obstack_1grow (¬es, '\0'); |
4970 | retval = obstack_finish (¬es); | |
4971 | } | |
4972 | else | |
4973 | { | |
c95b35a9 | 4974 | as_bad (_("missing string")); |
252b5132 RH |
4975 | retval = NULL; |
4976 | ignore_rest_of_line (); | |
4977 | } | |
4978 | *lenP = len; | |
4979 | return (retval); | |
041ff4dd | 4980 | } |
252b5132 | 4981 | \f |
041ff4dd | 4982 | /* In: Input_line_pointer->next character. |
f0e652b4 | 4983 | |
041ff4dd | 4984 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 4985 | |
041ff4dd NC |
4986 | Out: 1 if input_line_pointer->end-of-line. */ |
4987 | ||
4988 | int | |
39e6acbd | 4989 | is_it_end_of_statement (void) |
252b5132 RH |
4990 | { |
4991 | SKIP_WHITESPACE (); | |
4992 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 4993 | } |
252b5132 | 4994 | |
041ff4dd | 4995 | void |
39e6acbd | 4996 | equals (char *sym_name, int reassign) |
252b5132 | 4997 | { |
252b5132 RH |
4998 | char *stop = NULL; |
4999 | char stopc; | |
5000 | ||
5001 | input_line_pointer++; | |
5002 | if (*input_line_pointer == '=') | |
5003 | input_line_pointer++; | |
9497f5ac NC |
5004 | if (reassign < 0 && *input_line_pointer == '=') |
5005 | input_line_pointer++; | |
252b5132 RH |
5006 | |
5007 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5008 | input_line_pointer++; | |
5009 | ||
5010 | if (flag_mri) | |
5011 | stop = mri_comment_field (&stopc); | |
5012 | ||
9497f5ac | 5013 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5014 | |
5015 | if (flag_mri) | |
31d20a21 AM |
5016 | { |
5017 | demand_empty_rest_of_line (); | |
5018 | mri_comment_end (stop, stopc); | |
5019 | } | |
041ff4dd | 5020 | } |
252b5132 | 5021 | |
7e005732 NC |
5022 | /* .incbin -- include a file verbatim at the current location. */ |
5023 | ||
5024 | void | |
39e6acbd | 5025 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5026 | { |
5027 | FILE * binfile; | |
5028 | char * path; | |
5029 | char * filename; | |
5030 | char * binfrag; | |
5031 | long skip = 0; | |
5032 | long count = 0; | |
5033 | long bytes; | |
5034 | int len; | |
5035 | ||
5036 | #ifdef md_flush_pending_output | |
5037 | md_flush_pending_output (); | |
5038 | #endif | |
5039 | ||
5040 | SKIP_WHITESPACE (); | |
5041 | filename = demand_copy_string (& len); | |
5042 | if (filename == NULL) | |
5043 | return; | |
5044 | ||
5045 | SKIP_WHITESPACE (); | |
5046 | ||
5047 | /* Look for optional skip and count. */ | |
5048 | if (* input_line_pointer == ',') | |
5049 | { | |
5050 | ++ input_line_pointer; | |
5051 | skip = get_absolute_expression (); | |
5052 | ||
5053 | SKIP_WHITESPACE (); | |
5054 | ||
5055 | if (* input_line_pointer == ',') | |
5056 | { | |
5057 | ++ input_line_pointer; | |
5058 | ||
5059 | count = get_absolute_expression (); | |
5060 | if (count == 0) | |
5061 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5062 | ||
5063 | SKIP_WHITESPACE (); | |
5064 | } | |
5065 | } | |
5066 | ||
5067 | demand_empty_rest_of_line (); | |
5068 | ||
5069 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5070 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5071 | if (binfile == NULL) |
5072 | { | |
5073 | int i; | |
5074 | ||
5075 | path = xmalloc ((unsigned long) len + include_dir_maxlen + 5); | |
5076 | ||
5077 | for (i = 0; i < include_dir_count; i++) | |
5078 | { | |
5079 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5080 | ||
f740e790 | 5081 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5082 | if (binfile != NULL) |
5083 | break; | |
5084 | } | |
5085 | ||
5086 | if (binfile == NULL) | |
5087 | as_bad (_("file not found: %s"), filename); | |
5088 | } | |
5089 | else | |
5090 | path = xstrdup (filename); | |
5091 | ||
5092 | if (binfile) | |
5093 | { | |
f740e790 NC |
5094 | long file_len; |
5095 | ||
7e005732 NC |
5096 | register_dependency (path); |
5097 | ||
5098 | /* Compute the length of the file. */ | |
5099 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5100 | { | |
5101 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5102 | goto done; | |
5103 | } | |
f740e790 | 5104 | file_len = ftell (binfile); |
7e005732 | 5105 | |
c556cc9c | 5106 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5107 | if (count == 0) |
c556cc9c | 5108 | count = file_len - skip; |
7e005732 | 5109 | |
c556cc9c | 5110 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5111 | { |
c556cc9c | 5112 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5113 | skip, count, file_len); |
7e005732 NC |
5114 | goto done; |
5115 | } | |
5116 | ||
5117 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5118 | { | |
5119 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5120 | goto done; | |
5121 | } | |
5122 | ||
5123 | /* Allocate frag space and store file contents in it. */ | |
5124 | binfrag = frag_more (count); | |
5125 | ||
5126 | bytes = fread (binfrag, 1, count, binfile); | |
5127 | if (bytes < count) | |
5128 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5129 | path, bytes, count); | |
5130 | } | |
5131 | done: | |
5132 | if (binfile != NULL) | |
5133 | fclose (binfile); | |
5134 | if (path) | |
5135 | free (path); | |
5136 | } | |
5137 | ||
041ff4dd | 5138 | /* .include -- include a file at this point. */ |
252b5132 | 5139 | |
041ff4dd | 5140 | void |
39e6acbd | 5141 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5142 | { |
252b5132 RH |
5143 | char *filename; |
5144 | int i; | |
5145 | FILE *try; | |
5146 | char *path; | |
5147 | ||
041ff4dd | 5148 | if (!flag_m68k_mri) |
252b5132 RH |
5149 | { |
5150 | filename = demand_copy_string (&i); | |
5151 | if (filename == NULL) | |
5152 | { | |
5153 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5154 | called ignore_rest_of_line. */ |
252b5132 RH |
5155 | return; |
5156 | } | |
5157 | } | |
5158 | else | |
5159 | { | |
5160 | SKIP_WHITESPACE (); | |
5161 | i = 0; | |
041ff4dd | 5162 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5163 | && *input_line_pointer != ' ' |
5164 | && *input_line_pointer != '\t') | |
5165 | { | |
5166 | obstack_1grow (¬es, *input_line_pointer); | |
5167 | ++input_line_pointer; | |
5168 | ++i; | |
5169 | } | |
f0e652b4 | 5170 | |
252b5132 RH |
5171 | obstack_1grow (¬es, '\0'); |
5172 | filename = obstack_finish (¬es); | |
041ff4dd | 5173 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5174 | ++input_line_pointer; |
5175 | } | |
f0e652b4 | 5176 | |
252b5132 RH |
5177 | demand_empty_rest_of_line (); |
5178 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5179 | |
252b5132 RH |
5180 | for (i = 0; i < include_dir_count; i++) |
5181 | { | |
5182 | strcpy (path, include_dirs[i]); | |
5183 | strcat (path, "/"); | |
5184 | strcat (path, filename); | |
f740e790 | 5185 | if (0 != (try = fopen (path, FOPEN_RT))) |
252b5132 RH |
5186 | { |
5187 | fclose (try); | |
5188 | goto gotit; | |
5189 | } | |
5190 | } | |
f0e652b4 | 5191 | |
252b5132 RH |
5192 | free (path); |
5193 | path = filename; | |
5194 | gotit: | |
041ff4dd | 5195 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5196 | register_dependency (path); |
9f10757c | 5197 | input_scrub_insert_file (path); |
041ff4dd | 5198 | } |
252b5132 | 5199 | |
041ff4dd | 5200 | void |
39e6acbd | 5201 | add_include_dir (char *path) |
252b5132 RH |
5202 | { |
5203 | int i; | |
5204 | ||
5205 | if (include_dir_count == 0) | |
5206 | { | |
5207 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5208 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5209 | include_dir_count = 2; |
5210 | } | |
5211 | else | |
5212 | { | |
5213 | include_dir_count++; | |
041ff4dd NC |
5214 | include_dirs = |
5215 | (char **) realloc (include_dirs, | |
5216 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5217 | } |
5218 | ||
041ff4dd | 5219 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5220 | |
5221 | i = strlen (path); | |
5222 | if (i > include_dir_maxlen) | |
5223 | include_dir_maxlen = i; | |
041ff4dd | 5224 | } |
252b5132 RH |
5225 | \f |
5226 | /* Output debugging information to denote the source file. */ | |
5227 | ||
5228 | static void | |
39e6acbd | 5229 | generate_file_debug (void) |
252b5132 RH |
5230 | { |
5231 | if (debug_type == DEBUG_STABS) | |
5232 | stabs_generate_asm_file (); | |
5233 | } | |
5234 | ||
5235 | /* Output line number debugging information for the current source line. */ | |
5236 | ||
5237 | void | |
39e6acbd | 5238 | generate_lineno_debug (void) |
252b5132 | 5239 | { |
252b5132 RH |
5240 | switch (debug_type) |
5241 | { | |
5242 | case DEBUG_UNSPECIFIED: | |
5243 | case DEBUG_NONE: | |
4dc7ead9 | 5244 | case DEBUG_DWARF: |
252b5132 RH |
5245 | break; |
5246 | case DEBUG_STABS: | |
5247 | stabs_generate_asm_lineno (); | |
5248 | break; | |
5249 | case DEBUG_ECOFF: | |
5250 | ecoff_generate_asm_lineno (); | |
5251 | break; | |
252b5132 | 5252 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5253 | /* ??? We could here indicate to dwarf2dbg.c that something |
5254 | has changed. However, since there is additional backend | |
5255 | support that is required (calling dwarf2_emit_insn), we | |
5256 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5257 | break; |
5258 | } | |
5259 | } | |
5260 | ||
5261 | /* Output debugging information to mark a function entry point or end point. | |
5262 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5263 | ||
5264 | void | |
39e6acbd | 5265 | s_func (int end_p) |
252b5132 RH |
5266 | { |
5267 | do_s_func (end_p, NULL); | |
5268 | } | |
5269 | ||
5270 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5271 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5272 | ||
87c245cc | 5273 | static void |
39e6acbd | 5274 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5275 | { |
5276 | /* Record the current function so that we can issue an error message for | |
5277 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5278 | arguments. */ | |
5279 | static char *current_name; | |
5280 | static char *current_label; | |
5281 | ||
5282 | if (end_p) | |
5283 | { | |
5284 | if (current_name == NULL) | |
5285 | { | |
5286 | as_bad (_("missing .func")); | |
5287 | ignore_rest_of_line (); | |
5288 | return; | |
5289 | } | |
5290 | ||
5291 | if (debug_type == DEBUG_STABS) | |
5292 | stabs_generate_asm_endfunc (current_name, current_label); | |
5293 | ||
5294 | current_name = current_label = NULL; | |
5295 | } | |
5296 | else /* ! end_p */ | |
5297 | { | |
041ff4dd NC |
5298 | char *name, *label; |
5299 | char delim1, delim2; | |
252b5132 RH |
5300 | |
5301 | if (current_name != NULL) | |
5302 | { | |
5303 | as_bad (_(".endfunc missing for previous .func")); | |
5304 | ignore_rest_of_line (); | |
5305 | return; | |
5306 | } | |
5307 | ||
5308 | name = input_line_pointer; | |
5309 | delim1 = get_symbol_end (); | |
5310 | name = xstrdup (name); | |
5311 | *input_line_pointer = delim1; | |
5312 | SKIP_WHITESPACE (); | |
5313 | if (*input_line_pointer != ',') | |
5314 | { | |
5315 | if (default_prefix) | |
5316 | asprintf (&label, "%s%s", default_prefix, name); | |
5317 | else | |
5318 | { | |
7be1c489 | 5319 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
5320 | /* Missing entry point, use function's name with the leading |
5321 | char prepended. */ | |
5322 | if (leading_char) | |
5323 | asprintf (&label, "%c%s", leading_char, name); | |
5324 | else | |
5325 | label = name; | |
5326 | } | |
5327 | } | |
5328 | else | |
5329 | { | |
5330 | ++input_line_pointer; | |
5331 | SKIP_WHITESPACE (); | |
5332 | label = input_line_pointer; | |
5333 | delim2 = get_symbol_end (); | |
5334 | label = xstrdup (label); | |
5335 | *input_line_pointer = delim2; | |
5336 | } | |
5337 | ||
5338 | if (debug_type == DEBUG_STABS) | |
5339 | stabs_generate_asm_func (name, label); | |
5340 | ||
5341 | current_name = name; | |
5342 | current_label = label; | |
5343 | } | |
5344 | ||
5345 | demand_empty_rest_of_line (); | |
5346 | } | |
5347 | \f | |
041ff4dd | 5348 | void |
39e6acbd | 5349 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5350 | { |
40a4d956 | 5351 | ignore_rest_of_line (); |
252b5132 RH |
5352 | } |
5353 | ||
252b5132 | 5354 | void |
39e6acbd | 5355 | read_print_statistics (FILE *file) |
252b5132 RH |
5356 | { |
5357 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5358 | } | |
5359 | ||
041ff4dd NC |
5360 | /* Inserts the given line into the input stream. |
5361 | ||
9f10757c TW |
5362 | This call avoids macro/conditionals nesting checking, since the contents of |
5363 | the line are assumed to replace the contents of a line already scanned. | |
5364 | ||
47eebc20 | 5365 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
5366 | called by md_start_line_hook(). The given line is assumed to already be |
5367 | properly scrubbed. */ | |
5368 | ||
5369 | void | |
39e6acbd | 5370 | input_scrub_insert_line (const char *line) |
9f10757c TW |
5371 | { |
5372 | sb newline; | |
5373 | sb_new (&newline); | |
5374 | sb_add_string (&newline, line); | |
5375 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5376 | sb_kill (&newline); | |
5377 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5378 | } | |
5379 | ||
5380 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5381 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5382 | |
5383 | void | |
39e6acbd | 5384 | input_scrub_insert_file (char *path) |
9f10757c TW |
5385 | { |
5386 | input_scrub_include_file (path, input_line_pointer); | |
5387 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5388 | } | |
40a4d956 JB |
5389 | |
5390 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
5391 | ||
5392 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
5393 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
5394 | #endif | |
5395 | ||
5396 | static char * | |
5397 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED) | |
5398 | { | |
5399 | char inquote = '\0'; | |
5400 | int inescape = 0; | |
5401 | ||
5402 | while (!is_end_of_line[(unsigned char) *s] | |
5403 | || (inquote && !ISCNTRL (*s)) | |
5404 | || (inquote == '\'' && flag_mri) | |
5405 | #ifdef TC_EOL_IN_INSN | |
5406 | || (insn && TC_EOL_IN_INSN (s)) | |
5407 | #endif | |
5408 | ) | |
5409 | { | |
5410 | if (mri_string && *s == '\'') | |
5411 | inquote ^= *s; | |
5412 | else if (inescape) | |
5413 | inescape = 0; | |
5414 | else if (*s == '\\') | |
5415 | inescape = 1; | |
5416 | else if (!inquote | |
5417 | ? *s == '"' | |
5418 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
5419 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
5420 | #endif | |
5421 | : *s == inquote) | |
5422 | inquote ^= *s; | |
5423 | ++s; | |
5424 | } | |
5425 | if (inquote) | |
5426 | as_warn (_("missing closing `%c'"), inquote); | |
5427 | if (inescape) | |
5428 | as_warn (_("stray `\\'")); | |
5429 | return s; | |
5430 | } | |
5431 | ||
5432 | char * | |
5433 | find_end_of_line (char *s, int mri_string) | |
5434 | { | |
5435 | return _find_end_of_line (s, mri_string, 0); | |
5436 | } |