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}, | |
326 | {"err", s_err, 0}, | |
d190d046 | 327 | {"error", s_errwarn, 1}, |
252b5132 | 328 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
329 | /* extend */ |
330 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 RH |
331 | {"appfile", s_app_file, 1}, |
332 | {"appline", s_app_line, 0}, | |
333 | {"fail", s_fail, 0}, | |
334 | {"file", s_app_file, 0}, | |
335 | {"fill", s_fill, 0}, | |
336 | {"float", float_cons, 'f'}, | |
337 | {"format", s_ignore, 0}, | |
338 | {"func", s_func, 0}, | |
339 | {"global", s_globl, 0}, | |
340 | {"globl", s_globl, 0}, | |
341 | {"hword", cons, 2}, | |
342 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 343 | {"ifb", s_ifb, 1}, |
252b5132 RH |
344 | {"ifc", s_ifc, 0}, |
345 | {"ifdef", s_ifdef, 0}, | |
346 | {"ifeq", s_if, (int) O_eq}, | |
347 | {"ifeqs", s_ifeqs, 0}, | |
348 | {"ifge", s_if, (int) O_ge}, | |
349 | {"ifgt", s_if, (int) O_gt}, | |
350 | {"ifle", s_if, (int) O_le}, | |
351 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 352 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
353 | {"ifnc", s_ifc, 1}, |
354 | {"ifndef", s_ifdef, 1}, | |
355 | {"ifne", s_if, (int) O_ne}, | |
356 | {"ifnes", s_ifeqs, 1}, | |
357 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 358 | {"incbin", s_incbin, 0}, |
252b5132 RH |
359 | {"include", s_include, 0}, |
360 | {"int", cons, 4}, | |
361 | {"irp", s_irp, 0}, | |
362 | {"irep", s_irp, 0}, | |
363 | {"irpc", s_irp, 1}, | |
364 | {"irepc", s_irp, 1}, | |
365 | {"lcomm", s_lcomm, 0}, | |
041ff4dd | 366 | {"lflags", listing_flags, 0}, /* Listing flags. */ |
252b5132 | 367 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 368 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
369 | {"llen", listing_psize, 1}, |
370 | {"long", cons, 4}, | |
371 | {"lsym", s_lsym, 0}, | |
372 | {"macro", s_macro, 0}, | |
373 | {"mexit", s_mexit, 0}, | |
374 | {"mri", s_mri, 0}, | |
375 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
376 | {"name", s_ignore, 0}, | |
caa32fe5 | 377 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 378 | {"noformat", s_ignore, 0}, |
041ff4dd | 379 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
380 | {"nopage", listing_nopage, 0}, |
381 | {"octa", cons, 16}, | |
382 | {"offset", s_struct, 0}, | |
383 | {"org", s_org, 0}, | |
384 | {"p2align", s_align_ptwo, 0}, | |
385 | {"p2alignw", s_align_ptwo, -2}, | |
386 | {"p2alignl", s_align_ptwo, -4}, | |
387 | {"page", listing_eject, 0}, | |
388 | {"plen", listing_psize, 0}, | |
389 | {"print", s_print, 0}, | |
041ff4dd | 390 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
391 | {"purgem", s_purgem, 0}, |
392 | {"quad", cons, 8}, | |
393 | {"rep", s_rept, 0}, | |
394 | {"rept", s_rept, 0}, | |
395 | {"rva", s_rva, 4}, | |
041ff4dd NC |
396 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
397 | /* scl */ | |
398 | /* sect */ | |
252b5132 RH |
399 | {"set", s_set, 0}, |
400 | {"short", cons, 2}, | |
401 | {"single", float_cons, 'f'}, | |
041ff4dd | 402 | /* size */ |
252b5132 RH |
403 | {"space", s_space, 0}, |
404 | {"skip", s_space, 0}, | |
405 | {"sleb128", s_leb128, 1}, | |
406 | {"spc", s_ignore, 0}, | |
407 | {"stabd", s_stab, 'd'}, | |
408 | {"stabn", s_stab, 'n'}, | |
409 | {"stabs", s_stab, 's'}, | |
410 | {"string", stringer, 1}, | |
411 | {"struct", s_struct, 0}, | |
041ff4dd | 412 | /* tag */ |
252b5132 RH |
413 | {"text", s_text, 0}, |
414 | ||
415 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
416 | won't be able to use it for a while -- probably a year or more. | |
417 | But once this has been released, check with gcc maintainers | |
418 | before deleting it or even changing the spelling. */ | |
419 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
420 | /* If we're folding case -- done for some targets, not necessarily | |
421 | all -- the above string in an input file will be converted to | |
422 | this one. Match it either way... */ | |
423 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
424 | ||
041ff4dd | 425 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 426 | {"ttl", listing_title, 0}, |
041ff4dd | 427 | /* type */ |
252b5132 | 428 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
429 | /* use */ |
430 | /* val */ | |
252b5132 RH |
431 | {"xcom", s_comm, 0}, |
432 | {"xdef", s_globl, 0}, | |
433 | {"xref", s_ignore, 0}, | |
434 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 435 | {"warning", s_errwarn, 0}, |
252b5132 RH |
436 | {"word", cons, 2}, |
437 | {"zero", s_space, 0}, | |
041ff4dd | 438 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
439 | }; |
440 | ||
87c245cc BE |
441 | static offsetT |
442 | get_absolute_expr (expressionS *exp) | |
443 | { | |
444 | expression (exp); | |
445 | if (exp->X_op != O_constant) | |
446 | { | |
447 | if (exp->X_op != O_absent) | |
448 | as_bad (_("bad or irreducible absolute expression")); | |
449 | exp->X_add_number = 0; | |
450 | } | |
451 | return exp->X_add_number; | |
452 | } | |
453 | ||
454 | offsetT | |
455 | get_absolute_expression (void) | |
456 | { | |
457 | expressionS exp; | |
458 | ||
459 | return get_absolute_expr (&exp); | |
460 | } | |
461 | ||
252b5132 RH |
462 | static int pop_override_ok = 0; |
463 | static const char *pop_table_name; | |
464 | ||
465 | void | |
39e6acbd | 466 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
467 | { |
468 | const char *errtxt; | |
469 | const pseudo_typeS *pop; | |
470 | for (pop = table; pop->poc_name; pop++) | |
471 | { | |
472 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
473 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
474 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
475 | errtxt); | |
476 | } | |
477 | } | |
478 | ||
479 | #ifndef md_pop_insert | |
480 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
481 | #endif | |
482 | ||
483 | #ifndef obj_pop_insert | |
484 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
485 | #endif | |
486 | ||
54cfded0 AM |
487 | #ifndef cfi_pop_insert |
488 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
489 | #endif | |
490 | ||
041ff4dd | 491 | static void |
39e6acbd | 492 | pobegin (void) |
252b5132 RH |
493 | { |
494 | po_hash = hash_new (); | |
495 | ||
041ff4dd | 496 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
497 | pop_table_name = "md"; |
498 | md_pop_insert (); | |
499 | ||
041ff4dd | 500 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
501 | pop_table_name = "obj"; |
502 | pop_override_ok = 1; | |
503 | obj_pop_insert (); | |
504 | ||
041ff4dd | 505 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
506 | pop_table_name = "standard"; |
507 | pop_insert (potable); | |
d6415f6c | 508 | |
54cfded0 AM |
509 | #ifdef TARGET_USE_CFIPOP |
510 | pop_table_name = "cfi"; | |
511 | pop_override_ok = 1; | |
512 | cfi_pop_insert (); | |
513 | #endif | |
252b5132 RH |
514 | } |
515 | \f | |
516 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
517 | if (ignore_input ()) \ | |
518 | { \ | |
40a4d956 JB |
519 | char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \ |
520 | input_line_pointer = (input_line_pointer <= buffer_limit \ | |
521 | && eol >= buffer_limit) \ | |
522 | ? buffer_limit \ | |
523 | : eol + 1; \ | |
252b5132 RH |
524 | continue; \ |
525 | } | |
526 | ||
252b5132 RH |
527 | /* This function is used when scrubbing the characters between #APP |
528 | and #NO_APP. */ | |
529 | ||
530 | static char *scrub_string; | |
531 | static char *scrub_string_end; | |
532 | ||
533 | static int | |
39e6acbd | 534 | scrub_from_string (char *buf, int buflen) |
252b5132 | 535 | { |
2b47531b ILT |
536 | int copy; |
537 | ||
538 | copy = scrub_string_end - scrub_string; | |
539 | if (copy > buflen) | |
540 | copy = buflen; | |
541 | memcpy (buf, scrub_string, copy); | |
542 | scrub_string += copy; | |
543 | return copy; | |
252b5132 RH |
544 | } |
545 | ||
5e75c3ab JB |
546 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
547 | static int | |
548 | try_macro (char term, const char *line) | |
549 | { | |
550 | sb out; | |
551 | const char *err; | |
552 | macro_entry *macro; | |
553 | ||
554 | if (check_macro (line, &out, &err, ¯o)) | |
555 | { | |
556 | if (err != NULL) | |
557 | as_bad ("%s", err); | |
558 | *input_line_pointer++ = term; | |
559 | input_scrub_include_sb (&out, | |
560 | input_line_pointer, 1); | |
561 | sb_kill (&out); | |
562 | buffer_limit = | |
563 | input_scrub_next_buffer (&input_line_pointer); | |
564 | #ifdef md_macro_info | |
565 | md_macro_info (macro); | |
566 | #endif | |
567 | return 1; | |
568 | } | |
569 | return 0; | |
570 | } | |
571 | ||
041ff4dd NC |
572 | /* We read the file, putting things into a web that represents what we |
573 | have been reading. */ | |
574 | void | |
39e6acbd | 575 | read_a_source_file (char *name) |
252b5132 RH |
576 | { |
577 | register char c; | |
041ff4dd | 578 | register char *s; /* String of symbol, '\0' appended. */ |
252b5132 RH |
579 | register int temp; |
580 | pseudo_typeS *pop; | |
581 | ||
4c400d5e AM |
582 | #ifdef WARN_COMMENTS |
583 | found_comment = 0; | |
584 | #endif | |
585 | ||
252b5132 RH |
586 | buffer = input_scrub_new_file (name); |
587 | ||
588 | listing_file (name); | |
589 | listing_newline (NULL); | |
590 | register_dependency (name); | |
591 | ||
592 | /* Generate debugging information before we've read anything in to denote | |
593 | this file as the "main" source file and not a subordinate one | |
594 | (e.g. N_SO vs N_SOL in stabs). */ | |
595 | generate_file_debug (); | |
596 | ||
597 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 598 | { /* We have another line to parse. */ |
5e75c3ab JB |
599 | #ifndef NO_LISTING |
600 | /* In order to avoid listing macro expansion lines with labels | |
601 | multiple times, keep track of which line was last issued. */ | |
602 | static char *last_eol; | |
603 | ||
604 | last_eol = NULL; | |
605 | #endif | |
041ff4dd | 606 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ |
64e55042 | 607 | |
252b5132 RH |
608 | while (input_line_pointer < buffer_limit) |
609 | { | |
041ff4dd | 610 | /* We have more of this buffer to parse. */ |
252b5132 | 611 | |
041ff4dd NC |
612 | /* We now have input_line_pointer->1st char of next line. |
613 | If input_line_pointer [-1] == '\n' then we just | |
614 | scanned another line: so bump line counters. */ | |
252b5132 RH |
615 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
616 | { | |
617 | #ifdef md_start_line_hook | |
618 | md_start_line_hook (); | |
619 | #endif | |
252b5132 RH |
620 | if (input_line_pointer[-1] == '\n') |
621 | bump_line_counters (); | |
622 | ||
623 | line_label = NULL; | |
624 | ||
abd63a32 | 625 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
626 | { |
627 | /* Text at the start of a line must be a label, we | |
628 | run down and stick a colon in. */ | |
629 | if (is_name_beginner (*input_line_pointer)) | |
630 | { | |
631 | char *line_start = input_line_pointer; | |
632 | char c; | |
633 | int mri_line_macro; | |
634 | ||
635 | LISTING_NEWLINE (); | |
636 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
637 | ||
638 | c = get_symbol_end (); | |
639 | ||
640 | /* In MRI mode, the EQU and MACRO pseudoops must | |
641 | be handled specially. */ | |
642 | mri_line_macro = 0; | |
643 | if (flag_m68k_mri) | |
644 | { | |
645 | char *rest = input_line_pointer + 1; | |
646 | ||
647 | if (*rest == ':') | |
648 | ++rest; | |
649 | if (*rest == ' ' || *rest == '\t') | |
650 | ++rest; | |
651 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
652 | || strncasecmp (rest, "SET", 3) == 0) | |
653 | && (rest[3] == ' ' || rest[3] == '\t')) | |
654 | { | |
655 | input_line_pointer = rest + 3; | |
656 | equals (line_start, | |
657 | strncasecmp (rest, "SET", 3) == 0); | |
658 | continue; | |
659 | } | |
660 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
661 | && (rest[5] == ' ' | |
662 | || rest[5] == '\t' | |
663 | || is_end_of_line[(unsigned char) rest[5]])) | |
664 | mri_line_macro = 1; | |
665 | } | |
666 | ||
667 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
668 | pseudo-op specially: we don't want to put the |
669 | symbol in the symbol table. */ | |
041ff4dd | 670 | if (!mri_line_macro |
a25c045a | 671 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
672 | && TC_START_LABEL_WITHOUT_COLON(c, |
673 | input_line_pointer) | |
a25c045a | 674 | #endif |
ef99799a | 675 | ) |
252b5132 RH |
676 | line_label = colon (line_start); |
677 | else | |
678 | line_label = symbol_create (line_start, | |
679 | absolute_section, | |
680 | (valueT) 0, | |
681 | &zero_address_frag); | |
682 | ||
683 | *input_line_pointer = c; | |
684 | if (c == ':') | |
685 | input_line_pointer++; | |
686 | } | |
687 | } | |
688 | } | |
689 | ||
47eebc20 | 690 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
691 | We expect a well-formed assembler statement. |
692 | A "symbol-name:" is a statement. | |
f0e652b4 | 693 | |
041ff4dd NC |
694 | Depending on what compiler is used, the order of these tests |
695 | may vary to catch most common case 1st. | |
696 | Each test is independent of all other tests at the (top) level. | |
697 | PLEASE make a compiler that doesn't use this assembler. | |
698 | It is crufty to waste a compiler's time encoding things for this | |
699 | assembler, which then wastes more time decoding it. | |
700 | (And communicating via (linear) files is silly! | |
701 | If you must pass stuff, please pass a tree!) */ | |
252b5132 RH |
702 | if ((c = *input_line_pointer++) == '\t' |
703 | || c == ' ' | |
704 | || c == '\f' | |
705 | || c == 0) | |
041ff4dd NC |
706 | c = *input_line_pointer++; |
707 | ||
708 | know (c != ' '); /* No further leading whitespace. */ | |
252b5132 RH |
709 | |
710 | #ifndef NO_LISTING | |
711 | /* If listing is on, and we are expanding a macro, then give | |
712 | the listing code the contents of the expanded line. */ | |
713 | if (listing) | |
714 | { | |
715 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
716 | { | |
717 | char *copy; | |
718 | int len; | |
719 | ||
720 | /* Find the end of the current expanded macro line. */ | |
40a4d956 | 721 | s = find_end_of_line (input_line_pointer - 1, flag_m68k_mri); |
252b5132 | 722 | |
5e75c3ab JB |
723 | if (s != last_eol) |
724 | { | |
725 | last_eol = s; | |
726 | /* Copy it for safe keeping. Also give an indication of | |
727 | how much macro nesting is involved at this point. */ | |
728 | len = s - (input_line_pointer - 1); | |
729 | copy = (char *) xmalloc (len + macro_nest + 2); | |
730 | memset (copy, '>', macro_nest); | |
731 | copy[macro_nest] = ' '; | |
732 | memcpy (copy + macro_nest + 1, input_line_pointer - 1, len); | |
733 | copy[macro_nest + 1 + len] = '\0'; | |
734 | ||
735 | /* Install the line with the listing facility. */ | |
736 | listing_newline (copy); | |
737 | } | |
252b5132 RH |
738 | } |
739 | else | |
740 | listing_newline (NULL); | |
741 | } | |
742 | #endif | |
041ff4dd NC |
743 | /* C is the 1st significant character. |
744 | Input_line_pointer points after that character. */ | |
252b5132 RH |
745 | if (is_name_beginner (c)) |
746 | { | |
041ff4dd | 747 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
748 | HANDLE_CONDITIONAL_ASSEMBLY (); |
749 | ||
750 | s = --input_line_pointer; | |
041ff4dd NC |
751 | c = get_symbol_end (); /* name's delimiter. */ |
752 | ||
753 | /* C is character after symbol. | |
d6415f6c AM |
754 | That character's place in the input line is now '\0'. |
755 | S points to the beginning of the symbol. | |
756 | [In case of pseudo-op, s->'.'.] | |
757 | Input_line_pointer->'\0' where c was. */ | |
041ff4dd | 758 | if (TC_START_LABEL (c, input_line_pointer)) |
252b5132 RH |
759 | { |
760 | if (flag_m68k_mri) | |
761 | { | |
762 | char *rest = input_line_pointer + 1; | |
763 | ||
764 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
765 | if (*rest == ':') |
766 | ++rest; | |
f0e652b4 | 767 | |
252b5132 RH |
768 | if (*rest == ' ' || *rest == '\t') |
769 | ++rest; | |
f0e652b4 | 770 | |
252b5132 RH |
771 | if ((strncasecmp (rest, "EQU", 3) == 0 |
772 | || strncasecmp (rest, "SET", 3) == 0) | |
773 | && (rest[3] == ' ' || rest[3] == '\t')) | |
774 | { | |
775 | input_line_pointer = rest + 3; | |
776 | equals (s, 1); | |
777 | continue; | |
778 | } | |
779 | } | |
780 | ||
041ff4dd NC |
781 | line_label = colon (s); /* User-defined label. */ |
782 | /* Put ':' back for error messages' sake. */ | |
783 | *input_line_pointer++ = ':'; | |
a645d1eb L |
784 | #ifdef tc_check_label |
785 | tc_check_label (line_label); | |
786 | #endif | |
041ff4dd | 787 | /* Input_line_pointer->after ':'. */ |
252b5132 | 788 | SKIP_WHITESPACE (); |
252b5132 | 789 | } |
ee3c9814 CM |
790 | else if ((c == '=' |
791 | || ((c == ' ' || c == '\t') | |
792 | && input_line_pointer[1] == '=')) | |
793 | #ifdef TC_EQUAL_IN_INSN | |
794 | && !TC_EQUAL_IN_INSN (c, s) | |
795 | #endif | |
796 | ) | |
252b5132 RH |
797 | { |
798 | equals (s, 1); | |
799 | demand_empty_rest_of_line (); | |
800 | } | |
801 | else | |
041ff4dd NC |
802 | { |
803 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
804 | pop = NULL; |
805 | ||
a8a3b3b2 | 806 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
807 | { |
808 | char *s2 = s; | |
37d8bb27 NC |
809 | |
810 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
811 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 812 | |
252b5132 RH |
813 | while (*s2) |
814 | { | |
3882b010 | 815 | *s2 = TOLOWER (*s2); |
252b5132 RH |
816 | s2++; |
817 | } | |
818 | } | |
819 | #endif | |
abd63a32 | 820 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 821 | { |
7be1c489 AM |
822 | /* The MRI assembler uses pseudo-ops without |
823 | a period. */ | |
252b5132 RH |
824 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
825 | if (pop != NULL && pop->poc_handler == NULL) | |
826 | pop = NULL; | |
827 | } | |
828 | ||
829 | if (pop != NULL | |
041ff4dd | 830 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 831 | { |
041ff4dd | 832 | /* PSEUDO - OP. |
f0e652b4 | 833 | |
d6415f6c AM |
834 | WARNING: c has next char, which may be end-of-line. |
835 | We lookup the pseudo-op table with s+1 because we | |
836 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
837 | |
838 | if (pop == NULL) | |
839 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
840 | if (pop && !pop->poc_handler) |
841 | pop = NULL; | |
252b5132 RH |
842 | |
843 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
844 | automatic alignment directive. What a hack |
845 | this is. */ | |
252b5132 RH |
846 | if (mri_pending_align |
847 | && (pop == NULL | |
041ff4dd NC |
848 | || !((pop->poc_handler == cons |
849 | && pop->poc_val == 1) | |
850 | || (pop->poc_handler == s_space | |
851 | && pop->poc_val == 1) | |
252b5132 | 852 | #ifdef tc_conditional_pseudoop |
041ff4dd | 853 | || tc_conditional_pseudoop (pop) |
252b5132 | 854 | #endif |
041ff4dd NC |
855 | || pop->poc_handler == s_if |
856 | || pop->poc_handler == s_ifdef | |
857 | || pop->poc_handler == s_ifc | |
858 | || pop->poc_handler == s_ifeqs | |
859 | || pop->poc_handler == s_else | |
860 | || pop->poc_handler == s_endif | |
861 | || pop->poc_handler == s_globl | |
862 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
863 | { |
864 | do_align (1, (char *) NULL, 0, 0); | |
865 | mri_pending_align = 0; | |
f0e652b4 | 866 | |
252b5132 RH |
867 | if (line_label != NULL) |
868 | { | |
2b47531b | 869 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
870 | S_SET_VALUE (line_label, frag_now_fix ()); |
871 | } | |
872 | } | |
873 | ||
041ff4dd | 874 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
875 | if (pop == NULL) |
876 | { | |
5e75c3ab JB |
877 | char *end = input_line_pointer; |
878 | ||
252b5132 RH |
879 | *input_line_pointer = c; |
880 | s_ignore (0); | |
5e75c3ab JB |
881 | c = *--input_line_pointer; |
882 | *input_line_pointer = '\0'; | |
883 | if (! macro_defined || ! try_macro (c, s)) | |
884 | { | |
885 | *end = '\0'; | |
886 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
887 | *input_line_pointer++ = c; | |
888 | } | |
252b5132 RH |
889 | continue; |
890 | } | |
891 | ||
041ff4dd | 892 | /* Put it back for error messages etc. */ |
252b5132 RH |
893 | *input_line_pointer = c; |
894 | /* The following skip of whitespace is compulsory. | |
895 | A well shaped space is sometimes all that separates | |
041ff4dd | 896 | keyword from operands. */ |
252b5132 RH |
897 | if (c == ' ' || c == '\t') |
898 | input_line_pointer++; | |
041ff4dd NC |
899 | |
900 | /* Input_line is restored. | |
d6415f6c AM |
901 | Input_line_pointer->1st non-blank char |
902 | after pseudo-operation. */ | |
252b5132 RH |
903 | (*pop->poc_handler) (pop->poc_val); |
904 | ||
905 | /* If that was .end, just get out now. */ | |
906 | if (pop->poc_handler == s_end) | |
907 | goto quit; | |
908 | } | |
909 | else | |
910 | { | |
041ff4dd NC |
911 | /* WARNING: c has char, which may be end-of-line. */ |
912 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 | 913 | *input_line_pointer = c; |
40a4d956 | 914 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1); |
252b5132 RH |
915 | c = *input_line_pointer; |
916 | *input_line_pointer = '\0'; | |
917 | ||
918 | generate_lineno_debug (); | |
919 | ||
5e75c3ab JB |
920 | if (macro_defined && try_macro (c, s)) |
921 | continue; | |
252b5132 RH |
922 | |
923 | if (mri_pending_align) | |
924 | { | |
925 | do_align (1, (char *) NULL, 0, 0); | |
926 | mri_pending_align = 0; | |
927 | if (line_label != NULL) | |
928 | { | |
2b47531b | 929 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
930 | S_SET_VALUE (line_label, frag_now_fix ()); |
931 | } | |
932 | } | |
933 | ||
041ff4dd | 934 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
935 | |
936 | *input_line_pointer++ = c; | |
937 | ||
938 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
939 | this instruction. */ |
940 | } | |
941 | } | |
252b5132 | 942 | continue; |
041ff4dd | 943 | } |
252b5132 RH |
944 | |
945 | /* Empty statement? */ | |
946 | if (is_end_of_line[(unsigned char) c]) | |
947 | continue; | |
948 | ||
3882b010 | 949 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 950 | { |
041ff4dd | 951 | /* local label ("4:") */ |
252b5132 RH |
952 | char *backup = input_line_pointer; |
953 | ||
954 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
955 | ||
956 | temp = c - '0'; | |
957 | ||
041ff4dd | 958 | /* Read the whole number. */ |
3882b010 | 959 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
960 | { |
961 | temp = (temp * 10) + *input_line_pointer - '0'; | |
962 | ++input_line_pointer; | |
041ff4dd | 963 | } |
252b5132 RH |
964 | |
965 | if (LOCAL_LABELS_DOLLAR | |
966 | && *input_line_pointer == '$' | |
967 | && *(input_line_pointer + 1) == ':') | |
968 | { | |
969 | input_line_pointer += 2; | |
970 | ||
971 | if (dollar_label_defined (temp)) | |
972 | { | |
973 | as_fatal (_("label \"%d$\" redefined"), temp); | |
974 | } | |
975 | ||
976 | define_dollar_label (temp); | |
977 | colon (dollar_label_name (temp, 0)); | |
978 | continue; | |
979 | } | |
980 | ||
981 | if (LOCAL_LABELS_FB | |
982 | && *input_line_pointer++ == ':') | |
983 | { | |
984 | fb_label_instance_inc (temp); | |
985 | colon (fb_label_name (temp, 0)); | |
986 | continue; | |
987 | } | |
988 | ||
989 | input_line_pointer = backup; | |
990 | } /* local label ("4:") */ | |
991 | ||
992 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 993 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 994 | sb sbuf; |
252b5132 RH |
995 | char *ends; |
996 | char *new_buf; | |
997 | char *new_tmp; | |
998 | unsigned int new_length; | |
999 | char *tmp_buf = 0; | |
1000 | ||
1001 | bump_line_counters (); | |
1002 | s = input_line_pointer; | |
1003 | if (strncmp (s, "APP\n", 4)) | |
1004 | continue; /* We ignore it */ | |
1005 | s += 4; | |
1006 | ||
64e55042 | 1007 | sb_new (&sbuf); |
252b5132 RH |
1008 | ends = strstr (s, "#NO_APP\n"); |
1009 | ||
1010 | if (!ends) | |
1011 | { | |
1012 | unsigned int tmp_len; | |
1013 | unsigned int num; | |
1014 | ||
1015 | /* The end of the #APP wasn't in this buffer. We | |
1016 | keep reading in buffers until we find the #NO_APP | |
1017 | that goes with this #APP There is one. The specs | |
47eebc20 | 1018 | guarantee it... */ |
252b5132 RH |
1019 | tmp_len = buffer_limit - s; |
1020 | tmp_buf = xmalloc (tmp_len + 1); | |
1021 | memcpy (tmp_buf, s, tmp_len); | |
1022 | do | |
1023 | { | |
1024 | new_tmp = input_scrub_next_buffer (&buffer); | |
1025 | if (!new_tmp) | |
1026 | break; | |
1027 | else | |
1028 | buffer_limit = new_tmp; | |
1029 | input_line_pointer = buffer; | |
1030 | ends = strstr (buffer, "#NO_APP\n"); | |
1031 | if (ends) | |
1032 | num = ends - buffer; | |
1033 | else | |
1034 | num = buffer_limit - buffer; | |
1035 | ||
1036 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
1037 | memcpy (tmp_buf + tmp_len, buffer, num); | |
1038 | tmp_len += num; | |
1039 | } | |
1040 | while (!ends); | |
1041 | ||
1042 | input_line_pointer = ends ? ends + 8 : NULL; | |
1043 | ||
1044 | s = tmp_buf; | |
1045 | ends = s + tmp_len; | |
1046 | ||
1047 | } | |
1048 | else | |
1049 | { | |
1050 | input_line_pointer = ends + 8; | |
1051 | } | |
1052 | ||
1053 | scrub_string = s; | |
1054 | scrub_string_end = ends; | |
1055 | ||
1056 | new_length = ends - s; | |
1057 | new_buf = (char *) xmalloc (new_length); | |
1058 | new_tmp = new_buf; | |
1059 | for (;;) | |
1060 | { | |
1061 | int space; | |
1062 | int size; | |
1063 | ||
1064 | space = (new_buf + new_length) - new_tmp; | |
1065 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1066 | ||
1067 | if (size < space) | |
1068 | { | |
64e55042 | 1069 | new_tmp[size] = 0; |
252b5132 RH |
1070 | break; |
1071 | } | |
1072 | ||
1073 | new_buf = xrealloc (new_buf, new_length + 100); | |
1074 | new_tmp = new_buf + new_length; | |
1075 | new_length += 100; | |
1076 | } | |
1077 | ||
1078 | if (tmp_buf) | |
1079 | free (tmp_buf); | |
f0e652b4 | 1080 | |
64e55042 HPN |
1081 | /* We've "scrubbed" input to the preferred format. In the |
1082 | process we may have consumed the whole of the remaining | |
1083 | file (and included files). We handle this formatted | |
1084 | input similar to that of macro expansion, letting | |
1085 | actual macro expansion (possibly nested) and other | |
1086 | input expansion work. Beware that in messages, line | |
1087 | numbers and possibly file names will be incorrect. */ | |
1088 | sb_add_string (&sbuf, new_buf); | |
1089 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); | |
1090 | sb_kill (&sbuf); | |
1091 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1092 | free (new_buf); | |
252b5132 RH |
1093 | continue; |
1094 | } | |
1095 | ||
1096 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1097 | ||
1098 | #ifdef tc_unrecognized_line | |
1099 | if (tc_unrecognized_line (c)) | |
1100 | continue; | |
1101 | #endif | |
0e389e77 AM |
1102 | input_line_pointer--; |
1103 | /* Report unknown char as ignored. */ | |
c95b35a9 | 1104 | demand_empty_rest_of_line (); |
041ff4dd | 1105 | } |
252b5132 RH |
1106 | |
1107 | #ifdef md_after_pass_hook | |
1108 | md_after_pass_hook (); | |
1109 | #endif | |
041ff4dd | 1110 | } |
252b5132 RH |
1111 | |
1112 | quit: | |
1113 | ||
1114 | #ifdef md_cleanup | |
041ff4dd | 1115 | md_cleanup (); |
252b5132 | 1116 | #endif |
041ff4dd NC |
1117 | /* Close the input file. */ |
1118 | input_scrub_close (); | |
4c400d5e AM |
1119 | #ifdef WARN_COMMENTS |
1120 | { | |
1121 | if (warn_comment && found_comment) | |
1122 | as_warn_where (found_comment_file, found_comment, | |
1123 | "first comment found here"); | |
1124 | } | |
1125 | #endif | |
252b5132 RH |
1126 | } |
1127 | ||
e5604d79 RS |
1128 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
1129 | Take the sign of the number from X_unsigned rather than X_add_number. */ | |
1130 | ||
1131 | static void | |
1132 | convert_to_bignum (expressionS *exp) | |
1133 | { | |
1134 | valueT value; | |
1135 | unsigned int i; | |
1136 | ||
1137 | value = exp->X_add_number; | |
1138 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1139 | { | |
1140 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1141 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1142 | } | |
1143 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1144 | the sign of the original value. */ | |
1145 | if ((exp->X_add_number < 0) != !exp->X_unsigned) | |
1146 | generic_bignum[i++] = exp->X_unsigned ? 0 : LITTLENUM_MASK; | |
1147 | exp->X_op = O_big; | |
1148 | exp->X_add_number = i; | |
1149 | } | |
1150 | ||
252b5132 RH |
1151 | /* For most MRI pseudo-ops, the line actually ends at the first |
1152 | nonquoted space. This function looks for that point, stuffs a null | |
1153 | in, and sets *STOPCP to the character that used to be there, and | |
1154 | returns the location. | |
1155 | ||
1156 | Until I hear otherwise, I am going to assume that this is only true | |
1157 | for the m68k MRI assembler. */ | |
1158 | ||
1159 | char * | |
39e6acbd | 1160 | mri_comment_field (char *stopcp) |
252b5132 | 1161 | { |
252b5132 | 1162 | char *s; |
041ff4dd | 1163 | #ifdef TC_M68K |
252b5132 RH |
1164 | int inquote = 0; |
1165 | ||
1166 | know (flag_m68k_mri); | |
1167 | ||
1168 | for (s = input_line_pointer; | |
041ff4dd | 1169 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1170 | || inquote); |
1171 | s++) | |
1172 | { | |
1173 | if (*s == '\'') | |
041ff4dd | 1174 | inquote = !inquote; |
252b5132 | 1175 | } |
252b5132 | 1176 | #else |
041ff4dd NC |
1177 | for (s = input_line_pointer; |
1178 | !is_end_of_line[(unsigned char) *s]; | |
1179 | s++) | |
252b5132 | 1180 | ; |
041ff4dd | 1181 | #endif |
252b5132 RH |
1182 | *stopcp = *s; |
1183 | *s = '\0'; | |
f0e652b4 | 1184 | |
252b5132 | 1185 | return s; |
252b5132 RH |
1186 | } |
1187 | ||
1188 | /* Skip to the end of an MRI comment field. */ | |
1189 | ||
1190 | void | |
39e6acbd | 1191 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1192 | { |
1193 | know (flag_mri); | |
1194 | ||
1195 | input_line_pointer = stop; | |
1196 | *stop = stopc; | |
041ff4dd | 1197 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1198 | ++input_line_pointer; |
1199 | } | |
1200 | ||
041ff4dd | 1201 | void |
39e6acbd | 1202 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1203 | { |
1204 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1205 | } | |
1206 | ||
1207 | /* Guts of .align directive. N is the power of two to which to align. | |
1208 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1209 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1210 | the maximum number of characters to skip when doing the alignment, | |
1211 | or 0 if there is no maximum. */ | |
1212 | ||
041ff4dd | 1213 | static void |
39e6acbd | 1214 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1215 | { |
ebeb9253 AM |
1216 | if (now_seg == absolute_section) |
1217 | { | |
1218 | if (fill != NULL) | |
1219 | while (len-- > 0) | |
1220 | if (*fill++ != '\0') | |
1221 | { | |
1222 | as_warn (_("ignoring fill value in absolute section")); | |
1223 | break; | |
1224 | } | |
1225 | fill = NULL; | |
1226 | len = 0; | |
1227 | } | |
1228 | ||
b8861cfb NS |
1229 | #ifdef md_flush_pending_output |
1230 | md_flush_pending_output (); | |
1231 | #endif | |
252b5132 RH |
1232 | #ifdef md_do_align |
1233 | md_do_align (n, fill, len, max, just_record_alignment); | |
1234 | #endif | |
1235 | ||
041ff4dd | 1236 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1237 | if (n != 0 && !need_pass_2) |
1238 | { | |
0a9ef439 RH |
1239 | if (fill == NULL) |
1240 | { | |
1241 | if (subseg_text_p (now_seg)) | |
1242 | frag_align_code (n, max); | |
1243 | else | |
1244 | frag_align (n, 0, max); | |
1245 | } | |
1246 | else if (len <= 1) | |
252b5132 RH |
1247 | frag_align (n, *fill, max); |
1248 | else | |
1249 | frag_align_pattern (n, fill, len, max); | |
1250 | } | |
1251 | ||
1252 | #ifdef md_do_align | |
a6bd2a4f | 1253 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1254 | #endif |
1255 | ||
bea9907b | 1256 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1257 | } |
1258 | ||
1259 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1260 | (in bytes). A negative ARG is the negative of the length of the | |
1261 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1262 | interpreted as the byte boundary, rather than the power of 2. */ | |
1263 | ||
9ebd302d | 1264 | #define ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) |
9ebd302d | 1265 | |
252b5132 | 1266 | static void |
39e6acbd | 1267 | s_align (int arg, int bytes_p) |
252b5132 | 1268 | { |
b617dc20 | 1269 | unsigned int align_limit = ALIGN_LIMIT; |
9ebd302d | 1270 | unsigned int align; |
252b5132 RH |
1271 | char *stop = NULL; |
1272 | char stopc; | |
1273 | offsetT fill = 0; | |
1274 | int max; | |
1275 | int fill_p; | |
1276 | ||
1277 | if (flag_mri) | |
1278 | stop = mri_comment_field (&stopc); | |
1279 | ||
1280 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1281 | { | |
1282 | if (arg < 0) | |
1283 | align = 0; | |
1284 | else | |
041ff4dd | 1285 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1286 | } |
1287 | else | |
1288 | { | |
1289 | align = get_absolute_expression (); | |
1290 | SKIP_WHITESPACE (); | |
1291 | } | |
1292 | ||
1293 | if (bytes_p) | |
1294 | { | |
1295 | /* Convert to a power of 2. */ | |
1296 | if (align != 0) | |
1297 | { | |
1298 | unsigned int i; | |
1299 | ||
1300 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1301 | ; | |
1302 | if (align != 1) | |
0e389e77 | 1303 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1304 | |
252b5132 RH |
1305 | align = i; |
1306 | } | |
1307 | } | |
1308 | ||
b617dc20 | 1309 | if (align > align_limit) |
252b5132 | 1310 | { |
b617dc20 | 1311 | align = align_limit; |
0e389e77 | 1312 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1313 | } |
1314 | ||
1315 | if (*input_line_pointer != ',') | |
1316 | { | |
1317 | fill_p = 0; | |
1318 | max = 0; | |
1319 | } | |
1320 | else | |
1321 | { | |
1322 | ++input_line_pointer; | |
1323 | if (*input_line_pointer == ',') | |
1324 | fill_p = 0; | |
1325 | else | |
1326 | { | |
1327 | fill = get_absolute_expression (); | |
1328 | SKIP_WHITESPACE (); | |
1329 | fill_p = 1; | |
1330 | } | |
1331 | ||
1332 | if (*input_line_pointer != ',') | |
1333 | max = 0; | |
1334 | else | |
1335 | { | |
1336 | ++input_line_pointer; | |
1337 | max = get_absolute_expression (); | |
1338 | } | |
1339 | } | |
1340 | ||
041ff4dd | 1341 | if (!fill_p) |
252b5132 RH |
1342 | { |
1343 | if (arg < 0) | |
1344 | as_warn (_("expected fill pattern missing")); | |
1345 | do_align (align, (char *) NULL, 0, max); | |
1346 | } | |
1347 | else | |
1348 | { | |
1349 | int fill_len; | |
1350 | ||
1351 | if (arg >= 0) | |
1352 | fill_len = 1; | |
1353 | else | |
041ff4dd | 1354 | fill_len = -arg; |
252b5132 RH |
1355 | if (fill_len <= 1) |
1356 | { | |
1357 | char fill_char; | |
1358 | ||
1359 | fill_char = fill; | |
1360 | do_align (align, &fill_char, fill_len, max); | |
1361 | } | |
1362 | else | |
1363 | { | |
1364 | char ab[16]; | |
1365 | ||
1366 | if ((size_t) fill_len > sizeof ab) | |
1367 | abort (); | |
1368 | md_number_to_chars (ab, fill, fill_len); | |
1369 | do_align (align, ab, fill_len, max); | |
1370 | } | |
1371 | } | |
1372 | ||
1373 | demand_empty_rest_of_line (); | |
1374 | ||
1375 | if (flag_mri) | |
1376 | mri_comment_end (stop, stopc); | |
1377 | } | |
1378 | ||
1379 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1380 | align to a 4 byte boundary. */ | |
1381 | ||
041ff4dd | 1382 | void |
39e6acbd | 1383 | s_align_bytes (int arg) |
252b5132 RH |
1384 | { |
1385 | s_align (arg, 1); | |
1386 | } | |
1387 | ||
1388 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1389 | to a 2**4 boundary. */ | |
1390 | ||
041ff4dd | 1391 | void |
39e6acbd | 1392 | s_align_ptwo (int arg) |
252b5132 RH |
1393 | { |
1394 | s_align (arg, 0); | |
1395 | } | |
1396 | ||
caa32fe5 NC |
1397 | /* Switch in and out of alternate macro mode. */ |
1398 | ||
1399 | void | |
1400 | s_altmacro (int on) | |
1401 | { | |
1402 | demand_empty_rest_of_line (); | |
1403 | macro_set_alternate (on); | |
1404 | } | |
1405 | ||
e13bab5a AM |
1406 | symbolS * |
1407 | s_comm_internal (int param, | |
1408 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1409 | { |
e13bab5a AM |
1410 | char *name; |
1411 | char c; | |
1412 | char *p; | |
1413 | offsetT temp, size; | |
1414 | symbolS *symbolP = NULL; | |
252b5132 RH |
1415 | char *stop = NULL; |
1416 | char stopc; | |
e13bab5a | 1417 | expressionS exp; |
252b5132 RH |
1418 | |
1419 | if (flag_mri) | |
1420 | stop = mri_comment_field (&stopc); | |
1421 | ||
1422 | name = input_line_pointer; | |
1423 | c = get_symbol_end (); | |
041ff4dd | 1424 | /* Just after name is now '\0'. */ |
252b5132 RH |
1425 | p = input_line_pointer; |
1426 | *p = c; | |
0e389e77 AM |
1427 | |
1428 | if (name == p) | |
1429 | { | |
1430 | as_bad (_("expected symbol name")); | |
40a4d956 | 1431 | ignore_rest_of_line (); |
e13bab5a | 1432 | goto out; |
0e389e77 AM |
1433 | } |
1434 | ||
252b5132 | 1435 | SKIP_WHITESPACE (); |
f0e652b4 | 1436 | |
e13bab5a AM |
1437 | /* Accept an optional comma after the name. The comma used to be |
1438 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1439 | if (*input_line_pointer == ',') | |
1440 | input_line_pointer++; | |
1441 | ||
e13bab5a AM |
1442 | temp = get_absolute_expr (&exp); |
1443 | size = temp; | |
e13bab5a | 1444 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1445 | if (exp.X_op == O_absent) |
252b5132 | 1446 | { |
e13bab5a | 1447 | as_bad (_("missing size expression")); |
252b5132 | 1448 | ignore_rest_of_line (); |
e13bab5a | 1449 | goto out; |
252b5132 | 1450 | } |
e13bab5a | 1451 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1452 | { |
e13bab5a | 1453 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1454 | ignore_rest_of_line (); |
e13bab5a | 1455 | goto out; |
252b5132 | 1456 | } |
f0e652b4 | 1457 | |
a207757e | 1458 | *p = 0; |
252b5132 | 1459 | symbolP = symbol_find_or_make (name); |
041ff4dd | 1460 | if (S_IS_DEFINED (symbolP) && !S_IS_COMMON (symbolP)) |
252b5132 | 1461 | { |
e13bab5a AM |
1462 | symbolP = NULL; |
1463 | as_bad (_("symbol `%s' is already defined"), name); | |
1464 | *p = c; | |
252b5132 | 1465 | ignore_rest_of_line (); |
e13bab5a | 1466 | goto out; |
252b5132 | 1467 | } |
f0e652b4 | 1468 | |
e13bab5a AM |
1469 | size = S_GET_VALUE (symbolP); |
1470 | if (size == 0) | |
1471 | size = temp; | |
1472 | else if (size != temp) | |
1473 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1474 | name, (long) size, (long) temp); | |
1475 | ||
1476 | *p = c; | |
1477 | if (comm_parse_extra != NULL) | |
1478 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1479 | else |
1480 | { | |
e13bab5a | 1481 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1482 | S_SET_EXTERNAL (symbolP); |
252b5132 | 1483 | #ifdef OBJ_VMS |
e13bab5a AM |
1484 | { |
1485 | extern int flag_one; | |
1486 | if (size == 0 || !flag_one) | |
1487 | S_GET_OTHER (symbolP) = const_flag; | |
1488 | } | |
1489 | #endif | |
1490 | } | |
252b5132 RH |
1491 | |
1492 | demand_empty_rest_of_line (); | |
e13bab5a | 1493 | out: |
252b5132 RH |
1494 | if (flag_mri) |
1495 | mri_comment_end (stop, stopc); | |
e13bab5a AM |
1496 | return symbolP; |
1497 | } | |
1498 | ||
1499 | void | |
1500 | s_comm (int ignore) | |
1501 | { | |
1502 | s_comm_internal (ignore, NULL); | |
1503 | } | |
252b5132 RH |
1504 | |
1505 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1506 | symbol with the appropriate name. We make s_space do the right | |
1507 | thing by increasing the size. */ | |
1508 | ||
1509 | void | |
39e6acbd | 1510 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1511 | { |
1512 | char *name; | |
1513 | char c; | |
1514 | char *alc = NULL; | |
1515 | symbolS *sym; | |
1516 | offsetT align; | |
1517 | char *stop = NULL; | |
1518 | char stopc; | |
1519 | ||
041ff4dd | 1520 | if (!flag_mri) |
252b5132 RH |
1521 | { |
1522 | s_comm (0); | |
1523 | return; | |
1524 | } | |
1525 | ||
1526 | stop = mri_comment_field (&stopc); | |
1527 | ||
1528 | SKIP_WHITESPACE (); | |
1529 | ||
1530 | name = input_line_pointer; | |
3882b010 | 1531 | if (!ISDIGIT (*name)) |
252b5132 RH |
1532 | c = get_symbol_end (); |
1533 | else | |
1534 | { | |
1535 | do | |
1536 | { | |
1537 | ++input_line_pointer; | |
1538 | } | |
3882b010 | 1539 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1540 | |
252b5132 RH |
1541 | c = *input_line_pointer; |
1542 | *input_line_pointer = '\0'; | |
1543 | ||
1544 | if (line_label != NULL) | |
1545 | { | |
1546 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1547 | + (input_line_pointer - name) | |
1548 | + 1); | |
1549 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1550 | name = alc; | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | sym = symbol_find_or_make (name); | |
1555 | *input_line_pointer = c; | |
1556 | if (alc != NULL) | |
1557 | free (alc); | |
1558 | ||
1559 | if (*input_line_pointer != ',') | |
1560 | align = 0; | |
1561 | else | |
1562 | { | |
1563 | ++input_line_pointer; | |
1564 | align = get_absolute_expression (); | |
1565 | } | |
1566 | ||
041ff4dd | 1567 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1568 | { |
0e389e77 | 1569 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1570 | ignore_rest_of_line (); |
1571 | mri_comment_end (stop, stopc); | |
1572 | return; | |
1573 | } | |
1574 | ||
1575 | S_SET_EXTERNAL (sym); | |
1576 | mri_common_symbol = sym; | |
1577 | ||
1578 | #ifdef S_SET_ALIGN | |
1579 | if (align != 0) | |
1580 | S_SET_ALIGN (sym, align); | |
1581 | #endif | |
1582 | ||
1583 | if (line_label != NULL) | |
1584 | { | |
2b47531b ILT |
1585 | expressionS exp; |
1586 | exp.X_op = O_symbol; | |
1587 | exp.X_add_symbol = sym; | |
1588 | exp.X_add_number = 0; | |
1589 | symbol_set_value_expression (line_label, &exp); | |
1590 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1591 | S_SET_SEGMENT (line_label, expr_section); |
1592 | } | |
1593 | ||
1594 | /* FIXME: We just ignore the small argument, which distinguishes | |
1595 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1596 | ||
1597 | /* Ignore the type and hptype. */ | |
1598 | if (*input_line_pointer == ',') | |
1599 | input_line_pointer += 2; | |
1600 | if (*input_line_pointer == ',') | |
1601 | input_line_pointer += 2; | |
1602 | ||
1603 | demand_empty_rest_of_line (); | |
1604 | ||
1605 | mri_comment_end (stop, stopc); | |
1606 | } | |
1607 | ||
1608 | void | |
39e6acbd | 1609 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1610 | { |
1611 | segT section; | |
1612 | register int temp; | |
1613 | ||
1614 | temp = get_absolute_expression (); | |
1615 | if (flag_readonly_data_in_text) | |
1616 | { | |
1617 | section = text_section; | |
1618 | temp += 1000; | |
1619 | } | |
1620 | else | |
1621 | section = data_section; | |
1622 | ||
1623 | subseg_set (section, (subsegT) temp); | |
1624 | ||
1625 | #ifdef OBJ_VMS | |
1626 | const_flag = 0; | |
1627 | #endif | |
1628 | demand_empty_rest_of_line (); | |
1629 | } | |
1630 | ||
1631 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1632 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1633 | file name. This default definition may be overridden by the object | |
1634 | or CPU specific pseudo-ops. This function is also the default | |
1635 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1636 | .file. */ | |
1637 | ||
ecb4347a | 1638 | void |
f17c130b | 1639 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1640 | { |
1641 | #ifdef LISTING | |
1642 | if (listing) | |
1643 | listing_source_file (file); | |
1644 | #endif | |
1645 | register_dependency (file); | |
1646 | #ifdef obj_app_file | |
c04f5787 | 1647 | obj_app_file (file, appfile); |
ecb4347a DJ |
1648 | #endif |
1649 | } | |
1650 | ||
041ff4dd | 1651 | void |
39e6acbd | 1652 | s_app_file (int appfile) |
252b5132 RH |
1653 | { |
1654 | register char *s; | |
1655 | int length; | |
1656 | ||
041ff4dd | 1657 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1658 | if ((s = demand_copy_string (&length)) != 0) |
1659 | { | |
1660 | /* If this is a fake .appfile, a fake newline was inserted into | |
1661 | the buffer. Passing -2 to new_logical_line tells it to | |
1662 | account for it. */ | |
1663 | int may_omit | |
041ff4dd | 1664 | = (!new_logical_line (s, appfile ? -2 : -1) && appfile); |
252b5132 RH |
1665 | |
1666 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1667 | backquote. */ |
252b5132 RH |
1668 | if (flag_m68k_mri |
1669 | && *input_line_pointer == '\'' | |
1670 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1671 | ++input_line_pointer; | |
1672 | ||
1673 | demand_empty_rest_of_line (); | |
041ff4dd | 1674 | if (!may_omit) |
c04f5787 | 1675 | s_app_file_string (s, appfile); |
252b5132 RH |
1676 | } |
1677 | } | |
1678 | ||
1679 | /* Handle the .appline pseudo-op. This is automatically generated by | |
1680 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1681 | default definition may be overridden by the object or CPU specific | |
1682 | pseudo-ops. */ | |
1683 | ||
1684 | void | |
39e6acbd | 1685 | s_app_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1686 | { |
1687 | int l; | |
1688 | ||
1689 | /* The given number is that of the next line. */ | |
1690 | l = get_absolute_expression () - 1; | |
47837f8e NC |
1691 | |
1692 | if (l < -1) | |
252b5132 | 1693 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
1694 | Besides, it's silly. GCC however will generate a line number of |
1695 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
1696 | ||
1697 | # 0 "<built-in>" | |
1698 | ||
1699 | We do not want to barf on this, especially since such files are used | |
1700 | in the GCC and GDB testsuites. So we check for negative line numbers | |
1701 | rather than non-positive line numbers. */ | |
0e389e77 | 1702 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1703 | l + 1); |
252b5132 RH |
1704 | else |
1705 | { | |
1706 | new_logical_line ((char *) NULL, l); | |
1707 | #ifdef LISTING | |
1708 | if (listing) | |
1709 | listing_source_line (l); | |
1710 | #endif | |
1711 | } | |
1712 | demand_empty_rest_of_line (); | |
1713 | } | |
1714 | ||
1715 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1716 | read_a_source_file. */ | |
1717 | ||
1718 | void | |
39e6acbd | 1719 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1720 | { |
1721 | if (flag_mri) | |
1722 | { | |
1723 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 1724 | but we don't support that. */ |
252b5132 | 1725 | SKIP_WHITESPACE (); |
041ff4dd | 1726 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1727 | && *input_line_pointer != '*' |
1728 | && *input_line_pointer != '!') | |
1729 | as_warn (_("start address not supported")); | |
1730 | } | |
1731 | } | |
1732 | ||
1733 | /* Handle the .err pseudo-op. */ | |
1734 | ||
1735 | void | |
39e6acbd | 1736 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1737 | { |
1738 | as_bad (_(".err encountered")); | |
1739 | demand_empty_rest_of_line (); | |
d190d046 HPN |
1740 | } |
1741 | ||
1742 | /* Handle the .error and .warning pseudo-ops. */ | |
1743 | ||
1744 | void | |
1745 | s_errwarn (int err) | |
1746 | { | |
1747 | int len; | |
1748 | /* The purpose for the conditional assignment is not to | |
1749 | internationalize the directive itself, but that we need a | |
1750 | self-contained message, one that can be passed like the | |
1751 | demand_copy_C_string return value, and with no assumption on the | |
1752 | location of the name of the directive within the message. */ | |
1753 | char *msg | |
1754 | = (err ? _(".error directive invoked in source file") | |
1755 | : _(".warning directive invoked in source file")); | |
1756 | ||
1757 | if (!is_it_end_of_statement ()) | |
1758 | { | |
1759 | if (*input_line_pointer != '\"') | |
1760 | { | |
1761 | as_bad (_("%s argument must be a string"), | |
1762 | err ? ".error" : ".warning"); | |
40a4d956 | 1763 | ignore_rest_of_line (); |
d190d046 HPN |
1764 | return; |
1765 | } | |
1766 | ||
1767 | msg = demand_copy_C_string (&len); | |
1768 | if (msg == NULL) | |
1769 | return; | |
1770 | } | |
1771 | ||
1772 | if (err) | |
1773 | as_bad ("%s", msg); | |
1774 | else | |
1775 | as_warn ("%s", msg); | |
1776 | demand_empty_rest_of_line (); | |
252b5132 RH |
1777 | } |
1778 | ||
1779 | /* Handle the MRI fail pseudo-op. */ | |
1780 | ||
1781 | void | |
39e6acbd | 1782 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1783 | { |
1784 | offsetT temp; | |
1785 | char *stop = NULL; | |
1786 | char stopc; | |
1787 | ||
1788 | if (flag_mri) | |
1789 | stop = mri_comment_field (&stopc); | |
1790 | ||
1791 | temp = get_absolute_expression (); | |
1792 | if (temp >= 500) | |
1793 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1794 | else | |
1795 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1796 | ||
1797 | demand_empty_rest_of_line (); | |
1798 | ||
1799 | if (flag_mri) | |
1800 | mri_comment_end (stop, stopc); | |
1801 | } | |
1802 | ||
041ff4dd | 1803 | void |
39e6acbd | 1804 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1805 | { |
1806 | expressionS rep_exp; | |
1807 | long size = 1; | |
1808 | register long fill = 0; | |
1809 | char *p; | |
1810 | ||
1811 | #ifdef md_flush_pending_output | |
1812 | md_flush_pending_output (); | |
1813 | #endif | |
1814 | ||
1815 | get_known_segmented_expression (&rep_exp); | |
1816 | if (*input_line_pointer == ',') | |
1817 | { | |
1818 | input_line_pointer++; | |
1819 | size = get_absolute_expression (); | |
1820 | if (*input_line_pointer == ',') | |
1821 | { | |
1822 | input_line_pointer++; | |
1823 | fill = get_absolute_expression (); | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1828 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1829 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1830 | { | |
0e389e77 | 1831 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
1832 | size = BSD_FILL_SIZE_CROCK_8; |
1833 | } | |
1834 | if (size < 0) | |
1835 | { | |
0e389e77 | 1836 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
1837 | size = 0; |
1838 | } | |
1839 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1840 | { | |
1841 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 1842 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
1843 | size = 0; |
1844 | } | |
1845 | ||
1846 | if (size && !need_pass_2) | |
1847 | { | |
1848 | if (rep_exp.X_op == O_constant) | |
1849 | { | |
1850 | p = frag_var (rs_fill, (int) size, (int) size, | |
1851 | (relax_substateT) 0, (symbolS *) 0, | |
1852 | (offsetT) rep_exp.X_add_number, | |
1853 | (char *) 0); | |
1854 | } | |
1855 | else | |
1856 | { | |
1857 | /* We don't have a constant repeat count, so we can't use | |
1858 | rs_fill. We can get the same results out of rs_space, | |
1859 | but its argument is in bytes, so we must multiply the | |
1860 | repeat count by size. */ | |
1861 | ||
1862 | symbolS *rep_sym; | |
1863 | rep_sym = make_expr_symbol (&rep_exp); | |
1864 | if (size != 1) | |
1865 | { | |
1866 | expressionS size_exp; | |
1867 | size_exp.X_op = O_constant; | |
1868 | size_exp.X_add_number = size; | |
1869 | ||
1870 | rep_exp.X_op = O_multiply; | |
1871 | rep_exp.X_add_symbol = rep_sym; | |
1872 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1873 | rep_exp.X_add_number = 0; | |
1874 | rep_sym = make_expr_symbol (&rep_exp); | |
1875 | } | |
1876 | ||
1877 | p = frag_var (rs_space, (int) size, (int) size, | |
1878 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1879 | } | |
f0e652b4 | 1880 | |
252b5132 | 1881 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 1882 | |
252b5132 | 1883 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
1884 | flavoured AS. The following bizarre behaviour is to be |
1885 | compatible with above. I guess they tried to take up to 8 | |
1886 | bytes from a 4-byte expression and they forgot to sign | |
1887 | extend. */ | |
252b5132 RH |
1888 | #define BSD_FILL_SIZE_CROCK_4 (4) |
1889 | md_number_to_chars (p, (valueT) fill, | |
1890 | (size > BSD_FILL_SIZE_CROCK_4 | |
1891 | ? BSD_FILL_SIZE_CROCK_4 | |
1892 | : (int) size)); | |
1893 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
1894 | but emits no error message because it seems a legal thing to do. |
1895 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 1896 | compiler. */ |
252b5132 RH |
1897 | } |
1898 | demand_empty_rest_of_line (); | |
1899 | } | |
1900 | ||
041ff4dd | 1901 | void |
39e6acbd | 1902 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1903 | { |
1904 | char *name; | |
1905 | int c; | |
1906 | symbolS *symbolP; | |
1907 | char *stop = NULL; | |
1908 | char stopc; | |
1909 | ||
1910 | if (flag_mri) | |
1911 | stop = mri_comment_field (&stopc); | |
1912 | ||
1913 | do | |
1914 | { | |
1915 | name = input_line_pointer; | |
1916 | c = get_symbol_end (); | |
1917 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
1918 | S_SET_EXTERNAL (symbolP); |
1919 | ||
252b5132 RH |
1920 | *input_line_pointer = c; |
1921 | SKIP_WHITESPACE (); | |
58b5739a | 1922 | c = *input_line_pointer; |
252b5132 RH |
1923 | if (c == ',') |
1924 | { | |
1925 | input_line_pointer++; | |
1926 | SKIP_WHITESPACE (); | |
0e389e77 | 1927 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1928 | c = '\n'; |
1929 | } | |
1930 | } | |
1931 | while (c == ','); | |
1932 | ||
1933 | demand_empty_rest_of_line (); | |
1934 | ||
1935 | if (flag_mri) | |
1936 | mri_comment_end (stop, stopc); | |
1937 | } | |
1938 | ||
1939 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
1940 | ||
1941 | void | |
39e6acbd | 1942 | s_irp (int irpc) |
252b5132 | 1943 | { |
40a4d956 | 1944 | char *file, *eol; |
252b5132 RH |
1945 | unsigned int line; |
1946 | sb s; | |
1947 | const char *err; | |
1948 | sb out; | |
1949 | ||
1950 | as_where (&file, &line); | |
1951 | ||
1952 | sb_new (&s); | |
40a4d956 JB |
1953 | eol = find_end_of_line (input_line_pointer, 0); |
1954 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
1955 | input_line_pointer = eol; | |
252b5132 RH |
1956 | |
1957 | sb_new (&out); | |
1958 | ||
fea17916 | 1959 | err = expand_irp (irpc, 0, &s, &out, get_line_sb); |
252b5132 RH |
1960 | if (err != NULL) |
1961 | as_bad_where (file, line, "%s", err); | |
1962 | ||
1963 | sb_kill (&s); | |
1964 | ||
9f10757c | 1965 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
1966 | sb_kill (&out); |
1967 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1968 | } | |
1969 | ||
1970 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
1971 | the section to only be linked once. However, this is not supported | |
1972 | by most object file formats. This takes an optional argument, | |
1973 | which is what to do about duplicates. */ | |
1974 | ||
1975 | void | |
39e6acbd | 1976 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1977 | { |
1978 | enum linkonce_type type; | |
1979 | ||
1980 | SKIP_WHITESPACE (); | |
1981 | ||
1982 | type = LINKONCE_DISCARD; | |
1983 | ||
041ff4dd | 1984 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1985 | { |
1986 | char *s; | |
1987 | char c; | |
1988 | ||
1989 | s = input_line_pointer; | |
1990 | c = get_symbol_end (); | |
1991 | if (strcasecmp (s, "discard") == 0) | |
1992 | type = LINKONCE_DISCARD; | |
1993 | else if (strcasecmp (s, "one_only") == 0) | |
1994 | type = LINKONCE_ONE_ONLY; | |
1995 | else if (strcasecmp (s, "same_size") == 0) | |
1996 | type = LINKONCE_SAME_SIZE; | |
1997 | else if (strcasecmp (s, "same_contents") == 0) | |
1998 | type = LINKONCE_SAME_CONTENTS; | |
1999 | else | |
2000 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2001 | ||
2002 | *input_line_pointer = c; | |
2003 | } | |
2004 | ||
2005 | #ifdef obj_handle_link_once | |
2006 | obj_handle_link_once (type); | |
2007 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2008 | { |
2009 | flagword flags; | |
2010 | ||
2011 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2012 | as_warn (_(".linkonce is not supported for this object file format")); | |
2013 | ||
2014 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2015 | flags |= SEC_LINK_ONCE; | |
2016 | switch (type) | |
2017 | { | |
2018 | default: | |
2019 | abort (); | |
2020 | case LINKONCE_DISCARD: | |
2021 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2022 | break; | |
2023 | case LINKONCE_ONE_ONLY: | |
2024 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2025 | break; | |
2026 | case LINKONCE_SAME_SIZE: | |
2027 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2028 | break; | |
2029 | case LINKONCE_SAME_CONTENTS: | |
2030 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2031 | break; | |
2032 | } | |
041ff4dd | 2033 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2034 | as_bad (_("bfd_set_section_flags: %s"), |
2035 | bfd_errmsg (bfd_get_error ())); | |
2036 | } | |
252b5132 RH |
2037 | #endif /* ! defined (obj_handle_link_once) */ |
2038 | ||
2039 | demand_empty_rest_of_line (); | |
2040 | } | |
2041 | ||
e13bab5a AM |
2042 | void |
2043 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2044 | { |
e13bab5a | 2045 | char *pfrag; |
252b5132 RH |
2046 | segT current_seg = now_seg; |
2047 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2048 | segT bss_seg = bss_section; |
2049 | ||
252b5132 RH |
2050 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2051 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2052 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2053 | { | |
2054 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2055 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2056 | { |
2057 | bss_seg = subseg_new (".sbss", 1); | |
2058 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2059 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2060 | as_warn (_("error setting flags for \".sbss\": %s"), |
2061 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2062 | } |
2063 | } | |
2064 | #endif | |
e13bab5a | 2065 | subseg_set (bss_seg, 1); |
8684e216 | 2066 | |
e13bab5a | 2067 | if (align) |
041ff4dd | 2068 | { |
e13bab5a AM |
2069 | record_alignment (bss_seg, align); |
2070 | frag_align (align, 0, 0); | |
041ff4dd | 2071 | } |
252b5132 | 2072 | |
e13bab5a AM |
2073 | /* Detach from old frag. */ |
2074 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2075 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2076 | |
e13bab5a AM |
2077 | symbol_set_frag (symbolP, frag_now); |
2078 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2079 | *pfrag = 0; | |
f0e652b4 | 2080 | |
e13bab5a AM |
2081 | #ifdef S_SET_SIZE |
2082 | S_SET_SIZE (symbolP, size); | |
2083 | #endif | |
2084 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2085 | |
e13bab5a AM |
2086 | #ifdef OBJ_COFF |
2087 | /* The symbol may already have been created with a preceding | |
2088 | ".globl" directive -- be careful not to step on storage class | |
2089 | in that case. Otherwise, set it to static. */ | |
2090 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2091 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2092 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2093 | |
e13bab5a AM |
2094 | subseg_set (current_seg, current_subseg); |
2095 | } | |
f0e652b4 | 2096 | |
e13bab5a AM |
2097 | offsetT |
2098 | parse_align (int align_bytes) | |
2099 | { | |
2100 | expressionS exp; | |
2101 | addressT align; | |
252b5132 | 2102 | |
e13bab5a AM |
2103 | SKIP_WHITESPACE (); |
2104 | if (*input_line_pointer != ',') | |
2105 | { | |
2106 | no_align: | |
2107 | as_bad (_("expected alignment after size")); | |
2108 | ignore_rest_of_line (); | |
2109 | return -1; | |
2110 | } | |
f0e652b4 | 2111 | |
e13bab5a AM |
2112 | input_line_pointer++; |
2113 | SKIP_WHITESPACE (); | |
f0e652b4 | 2114 | |
e13bab5a AM |
2115 | align = get_absolute_expr (&exp); |
2116 | if (exp.X_op == O_absent) | |
2117 | goto no_align; | |
2118 | ||
2119 | if (!exp.X_unsigned) | |
2120 | { | |
2121 | as_warn (_("alignment negative; 0 assumed")); | |
2122 | align = 0; | |
041ff4dd | 2123 | } |
e13bab5a AM |
2124 | |
2125 | if (align_bytes && align != 0) | |
252b5132 | 2126 | { |
e13bab5a AM |
2127 | /* convert to a power of 2 alignment */ |
2128 | unsigned int alignp2 = 0; | |
2129 | while ((align & 1) == 0) | |
2130 | align >>= 1, ++alignp2; | |
2131 | if (align != 1) | |
252b5132 | 2132 | { |
e13bab5a AM |
2133 | as_bad (_("alignment not a power of 2")); |
2134 | ignore_rest_of_line (); | |
2135 | return -1; | |
252b5132 | 2136 | } |
e13bab5a | 2137 | align = alignp2; |
252b5132 | 2138 | } |
e13bab5a AM |
2139 | return align; |
2140 | } | |
252b5132 | 2141 | |
e13bab5a AM |
2142 | /* Called from s_comm_internal after symbol name and size have been |
2143 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2144 | 1 if this was a ".bss" directive which has a 3rd argument | |
2145 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2146 | with alignment in bytes. */ | |
252b5132 | 2147 | |
13c56984 | 2148 | symbolS * |
e13bab5a AM |
2149 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2150 | { | |
2151 | addressT align = 0; | |
252b5132 | 2152 | |
e13bab5a AM |
2153 | if (needs_align) |
2154 | { | |
2155 | align = parse_align (needs_align - 1); | |
2156 | if (align == (addressT) -1) | |
2157 | return NULL; | |
252b5132 RH |
2158 | } |
2159 | else | |
e13bab5a AM |
2160 | /* Assume some objects may require alignment on some systems. */ |
2161 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2162 | |
e13bab5a AM |
2163 | bss_alloc (symbolP, size, align); |
2164 | return symbolP; | |
041ff4dd | 2165 | } |
252b5132 RH |
2166 | |
2167 | void | |
39e6acbd | 2168 | s_lcomm (int needs_align) |
252b5132 | 2169 | { |
e13bab5a | 2170 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2171 | } |
2172 | ||
041ff4dd | 2173 | void |
39e6acbd | 2174 | s_lcomm_bytes (int needs_align) |
252b5132 | 2175 | { |
e13bab5a | 2176 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2177 | } |
2178 | ||
041ff4dd | 2179 | void |
39e6acbd | 2180 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2181 | { |
2182 | register char *name; | |
2183 | register char c; | |
2184 | register char *p; | |
2185 | expressionS exp; | |
2186 | register symbolS *symbolP; | |
2187 | ||
041ff4dd | 2188 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2189 | name = input_line_pointer; |
2190 | c = get_symbol_end (); | |
2191 | p = input_line_pointer; | |
2192 | *p = c; | |
0e389e77 AM |
2193 | |
2194 | if (name == p) | |
2195 | { | |
2196 | as_bad (_("expected symbol name")); | |
40a4d956 | 2197 | ignore_rest_of_line (); |
0e389e77 AM |
2198 | return; |
2199 | } | |
2200 | ||
252b5132 | 2201 | SKIP_WHITESPACE (); |
f0e652b4 | 2202 | |
252b5132 RH |
2203 | if (*input_line_pointer != ',') |
2204 | { | |
2205 | *p = 0; | |
0e389e77 | 2206 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2207 | *p = c; |
2208 | ignore_rest_of_line (); | |
2209 | return; | |
2210 | } | |
f0e652b4 | 2211 | |
252b5132 RH |
2212 | input_line_pointer++; |
2213 | expression (&exp); | |
f0e652b4 | 2214 | |
252b5132 RH |
2215 | if (exp.X_op != O_constant |
2216 | && exp.X_op != O_register) | |
2217 | { | |
2218 | as_bad (_("bad expression")); | |
2219 | ignore_rest_of_line (); | |
2220 | return; | |
2221 | } | |
f0e652b4 | 2222 | |
252b5132 RH |
2223 | *p = 0; |
2224 | symbolP = symbol_find_or_make (name); | |
2225 | ||
2226 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && | |
2227 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
2228 | those fields, and I can't see when they'd ever be tripped. I | |
2229 | don't think I understand why they were here so I may have | |
2230 | introduced a bug. As recently as 1.37 didn't have this test | |
041ff4dd | 2231 | anyway. xoxorich. */ |
252b5132 RH |
2232 | |
2233 | if (S_GET_SEGMENT (symbolP) == undefined_section | |
2234 | && S_GET_VALUE (symbolP) == 0) | |
2235 | { | |
2236 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2237 | keep the "external" bit. */ |
252b5132 RH |
2238 | S_SET_SEGMENT (symbolP, |
2239 | (exp.X_op == O_constant | |
2240 | ? absolute_section | |
2241 | : reg_section)); | |
2242 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2243 | } | |
2244 | else | |
2245 | { | |
0e389e77 | 2246 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2247 | } |
f0e652b4 | 2248 | |
252b5132 RH |
2249 | *p = c; |
2250 | demand_empty_rest_of_line (); | |
041ff4dd | 2251 | } |
252b5132 | 2252 | |
0822d075 NC |
2253 | /* Read a line into an sb. Returns the character that ended the line |
2254 | or zero if there are no more lines. */ | |
252b5132 RH |
2255 | |
2256 | static int | |
39e6acbd | 2257 | get_line_sb (sb *line) |
252b5132 | 2258 | { |
40a4d956 | 2259 | char *eol; |
252b5132 RH |
2260 | |
2261 | if (input_line_pointer[-1] == '\n') | |
2262 | bump_line_counters (); | |
2263 | ||
2264 | if (input_line_pointer >= buffer_limit) | |
2265 | { | |
2266 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2267 | if (buffer_limit == 0) | |
2268 | return 0; | |
2269 | } | |
2270 | ||
40a4d956 JB |
2271 | eol = find_end_of_line (input_line_pointer, flag_m68k_mri); |
2272 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); | |
2273 | input_line_pointer = eol; | |
f0e652b4 | 2274 | |
0822d075 NC |
2275 | /* Don't skip multiple end-of-line characters, because that breaks support |
2276 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2277 | characters but isn't. Instead just skip one end of line character and | |
2278 | return the character skipped so that the caller can re-insert it if | |
2279 | necessary. */ | |
40a4d956 | 2280 | return *input_line_pointer++; |
252b5132 RH |
2281 | } |
2282 | ||
fea17916 | 2283 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2284 | |
2285 | void | |
39e6acbd | 2286 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2287 | { |
40a4d956 | 2288 | char *file, *eol; |
252b5132 RH |
2289 | unsigned int line; |
2290 | sb s; | |
252b5132 RH |
2291 | const char *err; |
2292 | const char *name; | |
2293 | ||
2294 | as_where (&file, &line); | |
2295 | ||
2296 | sb_new (&s); | |
40a4d956 JB |
2297 | eol = find_end_of_line (input_line_pointer, 0); |
2298 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2299 | input_line_pointer = eol; | |
252b5132 | 2300 | |
252b5132 | 2301 | if (line_label != NULL) |
360e86f1 JB |
2302 | { |
2303 | sb label; | |
252b5132 | 2304 | |
360e86f1 JB |
2305 | sb_new (&label); |
2306 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2307 | err = define_macro (0, &s, &label, get_line_sb, file, line, &name); | |
2308 | sb_kill (&label); | |
2309 | } | |
2310 | else | |
2311 | err = define_macro (0, &s, NULL, get_line_sb, file, line, &name); | |
252b5132 | 2312 | if (err != NULL) |
02ddf156 | 2313 | as_bad_where (file, line, err, name); |
252b5132 RH |
2314 | else |
2315 | { | |
2316 | if (line_label != NULL) | |
2317 | { | |
5e75c3ab | 2318 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2319 | S_SET_VALUE (line_label, 0); |
2b47531b | 2320 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2321 | } |
2322 | ||
abd63a32 | 2323 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2324 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2325 | || (!flag_m68k_mri |
252b5132 RH |
2326 | && *name == '.' |
2327 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2328 | as_warn_where (file, |
2329 | line, | |
2330 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2331 | name); |
2332 | } | |
2333 | ||
2334 | sb_kill (&s); | |
2335 | } | |
2336 | ||
2337 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2338 | expansion. */ | |
2339 | ||
2340 | void | |
39e6acbd | 2341 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2342 | { |
2343 | cond_exit_macro (macro_nest); | |
2344 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2345 | } | |
2346 | ||
2347 | /* Switch in and out of MRI mode. */ | |
2348 | ||
2349 | void | |
39e6acbd | 2350 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2351 | { |
2352 | int on, old_flag; | |
2353 | ||
2354 | on = get_absolute_expression (); | |
2355 | old_flag = flag_mri; | |
2356 | if (on != 0) | |
2357 | { | |
2358 | flag_mri = 1; | |
2359 | #ifdef TC_M68K | |
2360 | flag_m68k_mri = 1; | |
2361 | #endif | |
2362 | macro_mri_mode (1); | |
2363 | } | |
2364 | else | |
2365 | { | |
2366 | flag_mri = 0; | |
abd63a32 | 2367 | #ifdef TC_M68K |
252b5132 | 2368 | flag_m68k_mri = 0; |
abd63a32 | 2369 | #endif |
252b5132 RH |
2370 | macro_mri_mode (0); |
2371 | } | |
2372 | ||
2373 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2374 | update the operator rankings. */ | |
2375 | expr_set_precedence (); | |
2376 | ||
2377 | #ifdef MRI_MODE_CHANGE | |
2378 | if (on != old_flag) | |
2379 | MRI_MODE_CHANGE (on); | |
2380 | #endif | |
2381 | ||
2382 | demand_empty_rest_of_line (); | |
2383 | } | |
2384 | ||
2385 | /* Handle changing the location counter. */ | |
2386 | ||
2387 | static void | |
39e6acbd | 2388 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 RH |
2389 | { |
2390 | if (segment != now_seg && segment != absolute_section) | |
0e389e77 | 2391 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2392 | |
2393 | if (now_seg == absolute_section) | |
2394 | { | |
2395 | if (fill != 0) | |
2396 | as_warn (_("ignoring fill value in absolute section")); | |
2397 | if (exp->X_op != O_constant) | |
2398 | { | |
2399 | as_bad (_("only constant offsets supported in absolute section")); | |
2400 | exp->X_add_number = 0; | |
2401 | } | |
2402 | abs_section_offset = exp->X_add_number; | |
2403 | } | |
2404 | else | |
2405 | { | |
2406 | char *p; | |
2289f85d AM |
2407 | symbolS *sym = exp->X_add_symbol; |
2408 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2409 | |
2289f85d AM |
2410 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2411 | { | |
2412 | /* Handle complex expressions. */ | |
2413 | sym = make_expr_symbol (exp); | |
2414 | off = 0; | |
2415 | } | |
2416 | ||
2417 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2418 | *p = fill; |
2419 | } | |
2420 | } | |
2421 | ||
041ff4dd | 2422 | void |
39e6acbd | 2423 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2424 | { |
2425 | register segT segment; | |
2426 | expressionS exp; | |
2427 | register long temp_fill; | |
2428 | ||
2429 | #ifdef md_flush_pending_output | |
2430 | md_flush_pending_output (); | |
2431 | #endif | |
2432 | ||
2433 | /* The m68k MRI assembler has a different meaning for .org. It | |
2434 | means to create an absolute section at a given address. We can't | |
2435 | support that--use a linker script instead. */ | |
2436 | if (flag_m68k_mri) | |
2437 | { | |
2438 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2439 | ignore_rest_of_line (); | |
2440 | return; | |
2441 | } | |
2442 | ||
2443 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2444 | thing as a sub-segment-relative origin. Any absolute origin is | |
2445 | given a warning, then assumed to be segment-relative. Any | |
2446 | segmented origin expression ("foo+42") had better be in the right | |
2447 | segment or the .org is ignored. | |
2448 | ||
2449 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2450 | we never know sub-segment sizes when we are reading code. BSD | |
2451 | will crash trying to emit negative numbers of filler bytes in | |
2452 | certain .orgs. We don't crash, but see as-write for that code. | |
2453 | ||
2454 | Don't make frag if need_pass_2==1. */ | |
2455 | segment = get_known_segmented_expression (&exp); | |
2456 | if (*input_line_pointer == ',') | |
2457 | { | |
2458 | input_line_pointer++; | |
2459 | temp_fill = get_absolute_expression (); | |
2460 | } | |
2461 | else | |
2462 | temp_fill = 0; | |
2463 | ||
2464 | if (!need_pass_2) | |
2465 | do_org (segment, &exp, temp_fill); | |
2466 | ||
2467 | demand_empty_rest_of_line (); | |
041ff4dd | 2468 | } |
252b5132 RH |
2469 | |
2470 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2471 | called by the obj-format routine which handles section changing | |
2472 | when in MRI mode. It will create a new section, and return it. It | |
2473 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2474 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2475 | |
2476 | void | |
39e6acbd | 2477 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2478 | { |
2479 | #ifdef TC_M68K | |
2480 | ||
2481 | char *name; | |
2482 | char c; | |
2483 | segT seg; | |
2484 | ||
2485 | SKIP_WHITESPACE (); | |
041ff4dd | 2486 | |
252b5132 | 2487 | name = input_line_pointer; |
3882b010 | 2488 | if (!ISDIGIT (*name)) |
252b5132 RH |
2489 | c = get_symbol_end (); |
2490 | else | |
2491 | { | |
2492 | do | |
2493 | { | |
2494 | ++input_line_pointer; | |
2495 | } | |
3882b010 | 2496 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2497 | |
252b5132 RH |
2498 | c = *input_line_pointer; |
2499 | *input_line_pointer = '\0'; | |
2500 | } | |
2501 | ||
2502 | name = xstrdup (name); | |
2503 | ||
2504 | *input_line_pointer = c; | |
2505 | ||
2506 | seg = subseg_new (name, 0); | |
2507 | ||
2508 | if (*input_line_pointer == ',') | |
2509 | { | |
2510 | int align; | |
2511 | ||
2512 | ++input_line_pointer; | |
2513 | align = get_absolute_expression (); | |
2514 | record_alignment (seg, align); | |
2515 | } | |
2516 | ||
2517 | *type = 'C'; | |
2518 | if (*input_line_pointer == ',') | |
2519 | { | |
2520 | c = *++input_line_pointer; | |
3882b010 | 2521 | c = TOUPPER (c); |
252b5132 RH |
2522 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2523 | *type = c; | |
2524 | else | |
2525 | as_bad (_("unrecognized section type")); | |
2526 | ++input_line_pointer; | |
2527 | ||
252b5132 RH |
2528 | { |
2529 | flagword flags; | |
2530 | ||
2531 | flags = SEC_NO_FLAGS; | |
2532 | if (*type == 'C') | |
2533 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2534 | else if (*type == 'D' || *type == 'M') | |
2535 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2536 | else if (*type == 'R') | |
2537 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2538 | if (flags != SEC_NO_FLAGS) | |
2539 | { | |
041ff4dd | 2540 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2541 | as_warn (_("error setting flags for \"%s\": %s"), |
2542 | bfd_section_name (stdoutput, seg), | |
2543 | bfd_errmsg (bfd_get_error ())); | |
2544 | } | |
2545 | } | |
252b5132 RH |
2546 | } |
2547 | ||
2548 | /* Ignore the HP type. */ | |
2549 | if (*input_line_pointer == ',') | |
2550 | input_line_pointer += 2; | |
2551 | ||
2552 | demand_empty_rest_of_line (); | |
2553 | ||
2554 | #else /* ! TC_M68K */ | |
2555 | #ifdef TC_I960 | |
2556 | ||
2557 | char *name; | |
2558 | char c; | |
2559 | segT seg; | |
2560 | ||
2561 | SKIP_WHITESPACE (); | |
2562 | ||
2563 | name = input_line_pointer; | |
2564 | c = get_symbol_end (); | |
2565 | ||
2566 | name = xstrdup (name); | |
2567 | ||
2568 | *input_line_pointer = c; | |
2569 | ||
2570 | seg = subseg_new (name, 0); | |
2571 | ||
2572 | if (*input_line_pointer != ',') | |
2573 | *type = 'C'; | |
2574 | else | |
2575 | { | |
2576 | char *sectype; | |
2577 | ||
2578 | ++input_line_pointer; | |
2579 | SKIP_WHITESPACE (); | |
2580 | sectype = input_line_pointer; | |
2581 | c = get_symbol_end (); | |
2582 | if (*sectype == '\0') | |
2583 | *type = 'C'; | |
2584 | else if (strcasecmp (sectype, "text") == 0) | |
2585 | *type = 'C'; | |
2586 | else if (strcasecmp (sectype, "data") == 0) | |
2587 | *type = 'D'; | |
2588 | else if (strcasecmp (sectype, "romdata") == 0) | |
2589 | *type = 'R'; | |
2590 | else | |
2591 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2592 | *input_line_pointer = c; | |
2593 | } | |
2594 | ||
2595 | if (*input_line_pointer == ',') | |
2596 | { | |
2597 | char *seccmd; | |
2598 | ||
2599 | ++input_line_pointer; | |
2600 | SKIP_WHITESPACE (); | |
2601 | seccmd = input_line_pointer; | |
2602 | c = get_symbol_end (); | |
2603 | if (strcasecmp (seccmd, "absolute") == 0) | |
2604 | { | |
2605 | as_bad (_("absolute sections are not supported")); | |
2606 | *input_line_pointer = c; | |
2607 | ignore_rest_of_line (); | |
2608 | return; | |
2609 | } | |
2610 | else if (strcasecmp (seccmd, "align") == 0) | |
2611 | { | |
2612 | int align; | |
2613 | ||
2614 | *input_line_pointer = c; | |
2615 | align = get_absolute_expression (); | |
2616 | record_alignment (seg, align); | |
2617 | } | |
2618 | else | |
2619 | { | |
2620 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2621 | *input_line_pointer = c; | |
2622 | } | |
2623 | } | |
2624 | ||
041ff4dd | 2625 | demand_empty_rest_of_line (); |
252b5132 RH |
2626 | |
2627 | #else /* ! TC_I960 */ | |
2628 | /* The MRI assembler seems to use different forms of .sect for | |
2629 | different targets. */ | |
2630 | as_bad ("MRI mode not supported for this target"); | |
2631 | ignore_rest_of_line (); | |
2632 | #endif /* ! TC_I960 */ | |
2633 | #endif /* ! TC_M68K */ | |
2634 | } | |
2635 | ||
2636 | /* Handle the .print pseudo-op. */ | |
2637 | ||
2638 | void | |
39e6acbd | 2639 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2640 | { |
2641 | char *s; | |
2642 | int len; | |
2643 | ||
2644 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
2645 | if (s != NULL) |
2646 | printf ("%s\n", s); | |
252b5132 RH |
2647 | demand_empty_rest_of_line (); |
2648 | } | |
2649 | ||
2650 | /* Handle the .purgem pseudo-op. */ | |
2651 | ||
2652 | void | |
39e6acbd | 2653 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2654 | { |
2655 | if (is_it_end_of_statement ()) | |
2656 | { | |
2657 | demand_empty_rest_of_line (); | |
2658 | return; | |
2659 | } | |
2660 | ||
2661 | do | |
2662 | { | |
2663 | char *name; | |
2664 | char c; | |
2665 | ||
2666 | SKIP_WHITESPACE (); | |
2667 | name = input_line_pointer; | |
2668 | c = get_symbol_end (); | |
2669 | delete_macro (name); | |
2670 | *input_line_pointer = c; | |
2671 | SKIP_WHITESPACE (); | |
2672 | } | |
2673 | while (*input_line_pointer++ == ','); | |
2674 | ||
2675 | --input_line_pointer; | |
2676 | demand_empty_rest_of_line (); | |
2677 | } | |
2678 | ||
057f53c1 | 2679 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 2680 | |
057f53c1 JB |
2681 | static void |
2682 | s_bad_end (int endr) | |
7f28ab9d | 2683 | { |
057f53c1 JB |
2684 | as_warn (_(".end%c encountered without preceeding %s"), |
2685 | endr ? 'r' : 'm', | |
2686 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
2687 | demand_empty_rest_of_line (); |
2688 | } | |
2689 | ||
2690 | /* Handle the .rept pseudo-op. */ | |
2691 | ||
252b5132 | 2692 | void |
39e6acbd | 2693 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2694 | { |
2695 | int count; | |
252b5132 RH |
2696 | |
2697 | count = get_absolute_expression (); | |
2698 | ||
041ff4dd | 2699 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2700 | } |
2701 | ||
2702 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2703 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2704 | |
2705 | void | |
39e6acbd | 2706 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
2707 | { |
2708 | sb one; | |
2709 | sb many; | |
2710 | ||
252b5132 | 2711 | sb_new (&one); |
041ff4dd | 2712 | if (!buffer_and_nest (start, end, &one, get_line_sb)) |
252b5132 | 2713 | { |
6dc19fc4 | 2714 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2715 | return; |
2716 | } | |
2717 | ||
2718 | sb_new (&many); | |
2719 | while (count-- > 0) | |
2720 | sb_add_sb (&many, &one); | |
2721 | ||
2722 | sb_kill (&one); | |
2723 | ||
9f10757c | 2724 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2725 | sb_kill (&many); |
2726 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2727 | } | |
2728 | ||
6dc19fc4 TW |
2729 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
2730 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 2731 | are properly nested. |
6dc19fc4 TW |
2732 | |
2733 | This function makes it easier to implement a premature "break" out of the | |
2734 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 2735 | such as line substitutions. */ |
6dc19fc4 TW |
2736 | |
2737 | void | |
39e6acbd | 2738 | end_repeat (int extra) |
6dc19fc4 TW |
2739 | { |
2740 | cond_exit_macro (macro_nest); | |
2741 | while (extra-- >= 0) | |
2742 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2743 | } | |
2744 | ||
be95a9c1 | 2745 | static void |
31d20a21 | 2746 | assign_symbol (char *name, int no_reassign) |
be95a9c1 AM |
2747 | { |
2748 | symbolS *symbolP; | |
2749 | ||
2750 | if (name[0] == '.' && name[1] == '\0') | |
2751 | { | |
2752 | /* Turn '. = mumble' into a .org mumble. */ | |
2753 | segT segment; | |
2754 | expressionS exp; | |
2755 | ||
2756 | segment = get_known_segmented_expression (&exp); | |
2757 | ||
2758 | if (!need_pass_2) | |
2759 | do_org (segment, &exp, 0); | |
2760 | ||
2761 | return; | |
2762 | } | |
2763 | ||
2764 | if ((symbolP = symbol_find (name)) == NULL | |
2765 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2766 | { | |
2767 | symbolP = symbol_find_or_make (name); | |
2768 | #ifndef NO_LISTING | |
2769 | /* When doing symbol listings, play games with dummy fragments living | |
2770 | outside the normal fragment chain to record the file and line info | |
2771 | for this symbol. */ | |
2772 | if (listing & LISTING_SYMBOLS) | |
2773 | { | |
2774 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 2775 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
2776 | dummy_frag->line = listing_tail; |
2777 | dummy_frag->fr_symbol = symbolP; | |
2778 | symbol_set_frag (symbolP, dummy_frag); | |
2779 | } | |
2780 | #endif | |
31d20a21 AM |
2781 | #ifdef OBJ_COFF |
2782 | /* "set" symbols are local unless otherwise specified. */ | |
2783 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
2784 | #endif |
2785 | } | |
2786 | ||
2787 | /* Permit register names to be redefined. */ | |
2788 | if (no_reassign | |
2789 | && S_IS_DEFINED (symbolP) | |
2790 | && S_GET_SEGMENT (symbolP) != reg_section) | |
2791 | as_bad (_("symbol `%s' is already defined"), name); | |
2792 | ||
2793 | pseudo_set (symbolP); | |
be95a9c1 AM |
2794 | } |
2795 | ||
252b5132 RH |
2796 | /* Handle the .equ, .equiv and .set directives. If EQUIV is 1, then |
2797 | this is .equiv, and it is an error if the symbol is already | |
2798 | defined. */ | |
2799 | ||
041ff4dd | 2800 | void |
39e6acbd | 2801 | s_set (int equiv) |
252b5132 | 2802 | { |
be95a9c1 AM |
2803 | char *name; |
2804 | char delim; | |
2805 | char *end_name; | |
252b5132 | 2806 | |
041ff4dd NC |
2807 | /* Especial apologies for the random logic: |
2808 | this just grew, and could be parsed much more simply! | |
2809 | Dean in haste. */ | |
252b5132 RH |
2810 | name = input_line_pointer; |
2811 | delim = get_symbol_end (); | |
2812 | end_name = input_line_pointer; | |
0e389e77 | 2813 | *end_name = delim; |
409d19c4 | 2814 | |
0e389e77 | 2815 | if (name == end_name) |
409d19c4 AM |
2816 | { |
2817 | as_bad (_("expected symbol name")); | |
40a4d956 | 2818 | ignore_rest_of_line (); |
409d19c4 AM |
2819 | return; |
2820 | } | |
2821 | ||
252b5132 RH |
2822 | SKIP_WHITESPACE (); |
2823 | ||
2824 | if (*input_line_pointer != ',') | |
2825 | { | |
2826 | *end_name = 0; | |
0e389e77 | 2827 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2828 | *end_name = delim; |
2829 | ignore_rest_of_line (); | |
2830 | return; | |
2831 | } | |
2832 | ||
2833 | input_line_pointer++; | |
2834 | *end_name = 0; | |
2835 | ||
be95a9c1 | 2836 | assign_symbol (name, equiv); |
252b5132 | 2837 | *end_name = delim; |
31d20a21 AM |
2838 | |
2839 | demand_empty_rest_of_line (); | |
041ff4dd | 2840 | } |
252b5132 | 2841 | |
041ff4dd | 2842 | void |
39e6acbd | 2843 | s_space (int mult) |
252b5132 RH |
2844 | { |
2845 | expressionS exp; | |
2846 | expressionS val; | |
2847 | char *p = 0; | |
2848 | char *stop = NULL; | |
2849 | char stopc; | |
2850 | int bytes; | |
2851 | ||
2852 | #ifdef md_flush_pending_output | |
2853 | md_flush_pending_output (); | |
2854 | #endif | |
2855 | ||
2856 | if (flag_mri) | |
2857 | stop = mri_comment_field (&stopc); | |
2858 | ||
2859 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
2860 | this is ds.b. */ | |
2861 | if (flag_m68k_mri && mult > 1) | |
2862 | { | |
2863 | if (now_seg == absolute_section) | |
2864 | { | |
2865 | abs_section_offset += abs_section_offset & 1; | |
2866 | if (line_label != NULL) | |
2867 | S_SET_VALUE (line_label, abs_section_offset); | |
2868 | } | |
2869 | else if (mri_common_symbol != NULL) | |
2870 | { | |
2871 | valueT val; | |
2872 | ||
2873 | val = S_GET_VALUE (mri_common_symbol); | |
2874 | if ((val & 1) != 0) | |
2875 | { | |
2876 | S_SET_VALUE (mri_common_symbol, val + 1); | |
2877 | if (line_label != NULL) | |
2878 | { | |
2b47531b ILT |
2879 | expressionS *symexp; |
2880 | ||
2881 | symexp = symbol_get_value_expression (line_label); | |
2882 | know (symexp->X_op == O_symbol); | |
2883 | know (symexp->X_add_symbol == mri_common_symbol); | |
2884 | symexp->X_add_number += 1; | |
252b5132 RH |
2885 | } |
2886 | } | |
2887 | } | |
2888 | else | |
2889 | { | |
2890 | do_align (1, (char *) NULL, 0, 0); | |
2891 | if (line_label != NULL) | |
2892 | { | |
2b47531b | 2893 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
2894 | S_SET_VALUE (line_label, frag_now_fix ()); |
2895 | } | |
2896 | } | |
2897 | } | |
2898 | ||
2899 | bytes = mult; | |
2900 | ||
2901 | expression (&exp); | |
2902 | ||
2903 | SKIP_WHITESPACE (); | |
2904 | if (*input_line_pointer == ',') | |
2905 | { | |
2906 | ++input_line_pointer; | |
2907 | expression (&val); | |
2908 | } | |
2909 | else | |
2910 | { | |
2911 | val.X_op = O_constant; | |
2912 | val.X_add_number = 0; | |
2913 | } | |
2914 | ||
2915 | if (val.X_op != O_constant | |
2916 | || val.X_add_number < - 0x80 | |
2917 | || val.X_add_number > 0xff | |
2918 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
2919 | { | |
2920 | if (exp.X_op != O_constant) | |
0e389e77 | 2921 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
2922 | else |
2923 | { | |
2924 | offsetT i; | |
2925 | ||
2926 | if (mult == 0) | |
2927 | mult = 1; | |
2928 | bytes = mult * exp.X_add_number; | |
2929 | for (i = 0; i < exp.X_add_number; i++) | |
2930 | emit_expr (&val, mult); | |
2931 | } | |
2932 | } | |
2933 | else | |
2934 | { | |
2935 | if (exp.X_op == O_constant) | |
2936 | { | |
2937 | long repeat; | |
2938 | ||
2939 | repeat = exp.X_add_number; | |
2940 | if (mult) | |
2941 | repeat *= mult; | |
2942 | bytes = repeat; | |
2943 | if (repeat <= 0) | |
2944 | { | |
2d150871 RO |
2945 | if (!flag_mri) |
2946 | as_warn (_(".space repeat count is zero, ignored")); | |
2947 | else if (repeat < 0) | |
252b5132 RH |
2948 | as_warn (_(".space repeat count is negative, ignored")); |
2949 | goto getout; | |
2950 | } | |
2951 | ||
2952 | /* If we are in the absolute section, just bump the offset. */ | |
2953 | if (now_seg == absolute_section) | |
2954 | { | |
2955 | abs_section_offset += repeat; | |
2956 | goto getout; | |
2957 | } | |
2958 | ||
2959 | /* If we are secretly in an MRI common section, then | |
2960 | creating space just increases the size of the common | |
2961 | symbol. */ | |
2962 | if (mri_common_symbol != NULL) | |
2963 | { | |
2964 | S_SET_VALUE (mri_common_symbol, | |
2965 | S_GET_VALUE (mri_common_symbol) + repeat); | |
2966 | goto getout; | |
2967 | } | |
2968 | ||
2969 | if (!need_pass_2) | |
2970 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
2971 | (offsetT) repeat, (char *) 0); | |
2972 | } | |
2973 | else | |
2974 | { | |
2975 | if (now_seg == absolute_section) | |
2976 | { | |
2977 | as_bad (_("space allocation too complex in absolute section")); | |
2978 | subseg_set (text_section, 0); | |
2979 | } | |
f0e652b4 | 2980 | |
252b5132 RH |
2981 | if (mri_common_symbol != NULL) |
2982 | { | |
2983 | as_bad (_("space allocation too complex in common section")); | |
2984 | mri_common_symbol = NULL; | |
2985 | } | |
f0e652b4 | 2986 | |
252b5132 RH |
2987 | if (!need_pass_2) |
2988 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
2989 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
2990 | } | |
2991 | ||
2992 | if (p) | |
2993 | *p = val.X_add_number; | |
2994 | } | |
2995 | ||
2996 | getout: | |
2997 | ||
2998 | /* In MRI mode, after an odd number of bytes, we must align to an | |
2999 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3000 | or dcb.b. */ | |
3001 | if (flag_mri && (bytes & 1) != 0) | |
3002 | mri_pending_align = 1; | |
3003 | ||
3004 | demand_empty_rest_of_line (); | |
3005 | ||
3006 | if (flag_mri) | |
3007 | mri_comment_end (stop, stopc); | |
3008 | } | |
3009 | ||
3010 | /* This is like s_space, but the value is a floating point number with | |
3011 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3012 | friends. */ | |
3013 | ||
3014 | void | |
39e6acbd | 3015 | s_float_space (int float_type) |
252b5132 RH |
3016 | { |
3017 | offsetT count; | |
3018 | int flen; | |
3019 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3020 | char *stop = NULL; | |
3021 | char stopc; | |
3022 | ||
3023 | if (flag_mri) | |
3024 | stop = mri_comment_field (&stopc); | |
3025 | ||
3026 | count = get_absolute_expression (); | |
3027 | ||
3028 | SKIP_WHITESPACE (); | |
3029 | if (*input_line_pointer != ',') | |
3030 | { | |
3031 | as_bad (_("missing value")); | |
3032 | ignore_rest_of_line (); | |
3033 | if (flag_mri) | |
3034 | mri_comment_end (stop, stopc); | |
3035 | return; | |
3036 | } | |
3037 | ||
3038 | ++input_line_pointer; | |
3039 | ||
3040 | SKIP_WHITESPACE (); | |
3041 | ||
3042 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3043 | * letter is legal. */ | |
3044 | if (input_line_pointer[0] == '0' | |
3882b010 | 3045 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3046 | input_line_pointer += 2; |
3047 | ||
3048 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3049 | with the exact digits specified. */ | |
3050 | if (input_line_pointer[0] == ':') | |
3051 | { | |
3052 | flen = hex_float (float_type, temp); | |
3053 | if (flen < 0) | |
3054 | { | |
3055 | ignore_rest_of_line (); | |
3056 | if (flag_mri) | |
3057 | mri_comment_end (stop, stopc); | |
3058 | return; | |
3059 | } | |
3060 | } | |
3061 | else | |
3062 | { | |
3063 | char *err; | |
3064 | ||
3065 | err = md_atof (float_type, temp, &flen); | |
3066 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3067 | know (flen > 0); | |
3068 | if (err) | |
3069 | { | |
0e389e77 | 3070 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3071 | ignore_rest_of_line (); |
3072 | if (flag_mri) | |
3073 | mri_comment_end (stop, stopc); | |
3074 | return; | |
3075 | } | |
3076 | } | |
3077 | ||
3078 | while (--count >= 0) | |
3079 | { | |
3080 | char *p; | |
3081 | ||
3082 | p = frag_more (flen); | |
3083 | memcpy (p, temp, (unsigned int) flen); | |
3084 | } | |
3085 | ||
3086 | demand_empty_rest_of_line (); | |
3087 | ||
3088 | if (flag_mri) | |
3089 | mri_comment_end (stop, stopc); | |
3090 | } | |
3091 | ||
3092 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3093 | ||
3094 | void | |
39e6acbd | 3095 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3096 | { |
3097 | char *stop = NULL; | |
3098 | char stopc; | |
3099 | ||
3100 | if (flag_mri) | |
3101 | stop = mri_comment_field (&stopc); | |
3102 | abs_section_offset = get_absolute_expression (); | |
3103 | subseg_set (absolute_section, 0); | |
3104 | demand_empty_rest_of_line (); | |
3105 | if (flag_mri) | |
3106 | mri_comment_end (stop, stopc); | |
3107 | } | |
3108 | ||
3109 | void | |
39e6acbd | 3110 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3111 | { |
3112 | register int temp; | |
3113 | ||
3114 | temp = get_absolute_expression (); | |
3115 | subseg_set (text_section, (subsegT) temp); | |
3116 | demand_empty_rest_of_line (); | |
3117 | #ifdef OBJ_VMS | |
3118 | const_flag &= ~IN_DEFAULT_SECTION; | |
3119 | #endif | |
041ff4dd | 3120 | } |
252b5132 | 3121 | \f |
c95b35a9 NS |
3122 | |
3123 | /* Verify that we are at the end of a line. If not, issue an error and | |
3124 | skip to EOL. */ | |
3125 | ||
041ff4dd | 3126 | void |
39e6acbd | 3127 | demand_empty_rest_of_line (void) |
252b5132 RH |
3128 | { |
3129 | SKIP_WHITESPACE (); | |
3130 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3131 | input_line_pointer++; |
252b5132 | 3132 | else |
252b5132 | 3133 | { |
3882b010 | 3134 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3135 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3136 | *input_line_pointer); |
252b5132 | 3137 | else |
c95b35a9 | 3138 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3139 | *input_line_pointer); |
c95b35a9 | 3140 | ignore_rest_of_line (); |
252b5132 | 3141 | } |
c95b35a9 NS |
3142 | |
3143 | /* Return pointing just after end-of-line. */ | |
3144 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3145 | } | |
3146 | ||
3147 | /* Silently advance to the end of line. Use this after already having | |
3148 | issued an error about something bad. */ | |
3149 | ||
3150 | void | |
3151 | ignore_rest_of_line (void) | |
3152 | { | |
3153 | while (input_line_pointer < buffer_limit | |
3154 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3155 | input_line_pointer++; | |
f0e652b4 | 3156 | |
041ff4dd NC |
3157 | input_line_pointer++; |
3158 | ||
3159 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3160 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3161 | } | |
3162 | ||
be95a9c1 AM |
3163 | /* Sets frag for given symbol to zero_address_frag, except when the |
3164 | symbol frag is already set to a dummy listing frag. */ | |
3165 | ||
3166 | static void | |
3167 | set_zero_frag (symbolS *symbolP) | |
3168 | { | |
3169 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3170 | symbol_set_frag (symbolP, &zero_address_frag); | |
3171 | } | |
3172 | ||
041ff4dd | 3173 | /* In: Pointer to a symbol. |
d6415f6c | 3174 | Input_line_pointer->expression. |
f0e652b4 | 3175 | |
041ff4dd | 3176 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3177 | Tried to set symbol to value of expression. |
3178 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3179 | |
252b5132 | 3180 | void |
39e6acbd | 3181 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3182 | { |
3183 | expressionS exp; | |
be95a9c1 | 3184 | segT seg; |
252b5132 | 3185 | |
041ff4dd | 3186 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3187 | |
ce34c373 | 3188 | (void) expression (&exp); |
252b5132 RH |
3189 | |
3190 | if (exp.X_op == O_illegal) | |
0e389e77 | 3191 | as_bad (_("illegal expression")); |
252b5132 | 3192 | else if (exp.X_op == O_absent) |
0e389e77 | 3193 | as_bad (_("missing expression")); |
252b5132 RH |
3194 | else if (exp.X_op == O_big) |
3195 | { | |
3196 | if (exp.X_add_number > 0) | |
0e389e77 | 3197 | as_bad (_("bignum invalid")); |
252b5132 | 3198 | else |
0e389e77 | 3199 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3200 | } |
3201 | else if (exp.X_op == O_subtract | |
252b5132 | 3202 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3203 | && (symbol_get_frag (exp.X_add_symbol) |
3204 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3205 | { |
3206 | exp.X_op = O_constant; | |
3207 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3208 | - S_GET_VALUE (exp.X_op_symbol)); | |
3209 | } | |
3210 | ||
be95a9c1 AM |
3211 | if (symbol_section_p (symbolP)) |
3212 | { | |
3213 | as_bad ("attempt to set value of section symbol"); | |
3214 | return; | |
3215 | } | |
be95a9c1 | 3216 | |
252b5132 RH |
3217 | switch (exp.X_op) |
3218 | { | |
3219 | case O_illegal: | |
3220 | case O_absent: | |
3221 | case O_big: | |
3222 | exp.X_add_number = 0; | |
3223 | /* Fall through. */ | |
3224 | case O_constant: | |
3225 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3226 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3227 | set_zero_frag (symbolP); |
252b5132 RH |
3228 | break; |
3229 | ||
3230 | case O_register: | |
3231 | S_SET_SEGMENT (symbolP, reg_section); | |
3232 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3233 | set_zero_frag (symbolP); |
252b5132 RH |
3234 | break; |
3235 | ||
3236 | case O_symbol: | |
be95a9c1 AM |
3237 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3238 | /* For x=undef+const, create an expression symbol. | |
3239 | For x=x+const, just update x except when x is an undefined symbol | |
3240 | For x=defined+const, evaluate x. */ | |
3241 | if (symbolP == exp.X_add_symbol | |
3242 | && (seg != undefined_section | |
3243 | || !symbol_constant_p (symbolP))) | |
3244 | { | |
3245 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3246 | break; | |
3247 | } | |
3248 | else if (seg != undefined_section) | |
252b5132 RH |
3249 | { |
3250 | symbolS *s = exp.X_add_symbol; | |
3251 | ||
60938e80 L |
3252 | if (S_IS_COMMON (s)) |
3253 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3254 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3255 | ||
be95a9c1 AM |
3256 | S_SET_SEGMENT (symbolP, seg); |
3257 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3258 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3259 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3260 | break; |
252b5132 | 3261 | } |
66bd02d3 AM |
3262 | S_SET_SEGMENT (symbolP, undefined_section); |
3263 | symbol_set_value_expression (symbolP, &exp); | |
3264 | set_zero_frag (symbolP); | |
3265 | break; | |
252b5132 RH |
3266 | |
3267 | default: | |
aba4aa7d AM |
3268 | /* The value is some complex expression. */ |
3269 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3270 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3271 | set_zero_frag (symbolP); |
252b5132 RH |
3272 | break; |
3273 | } | |
3274 | } | |
3275 | \f | |
d6415f6c | 3276 | /* cons() |
f0e652b4 | 3277 | |
041ff4dd NC |
3278 | CONStruct more frag of .bytes, or .words etc. |
3279 | Should need_pass_2 be 1 then emit no frag(s). | |
3280 | This understands EXPRESSIONS. | |
f0e652b4 | 3281 | |
041ff4dd | 3282 | Bug (?) |
f0e652b4 | 3283 | |
041ff4dd NC |
3284 | This has a split personality. We use expression() to read the |
3285 | value. We can detect if the value won't fit in a byte or word. | |
3286 | But we can't detect if expression() discarded significant digits | |
3287 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3288 | |
3289 | /* Select a parser for cons expressions. */ | |
3290 | ||
3291 | /* Some targets need to parse the expression in various fancy ways. | |
3292 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3293 | (for example, the HPPA does this). Otherwise, you can define | |
3294 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3295 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3296 | are defined, which is the normal case, then only simple expressions | |
3297 | are permitted. */ | |
3298 | ||
abd63a32 | 3299 | #ifdef TC_M68K |
252b5132 | 3300 | static void |
39e6acbd | 3301 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3302 | #endif |
252b5132 RH |
3303 | |
3304 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3305 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3306 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3307 | static void |
39e6acbd | 3308 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3309 | #endif |
3310 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3311 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3312 | static void | |
39e6acbd | 3313 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3314 | #endif |
3315 | ||
3316 | /* If we haven't gotten one yet, just call expression. */ | |
3317 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3318 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3319 | #endif | |
3320 | #endif | |
3321 | ||
cdfbf930 | 3322 | void |
b41b1f95 L |
3323 | do_parse_cons_expression (expressionS *exp, |
3324 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3325 | { |
3326 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3327 | } | |
3328 | ||
3329 | ||
041ff4dd NC |
3330 | /* Worker to do .byte etc statements. |
3331 | Clobbers input_line_pointer and checks end-of-line. */ | |
3332 | ||
3333 | static void | |
39e6acbd KH |
3334 | cons_worker (register int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
3335 | int rva) | |
252b5132 RH |
3336 | { |
3337 | int c; | |
3338 | expressionS exp; | |
3339 | char *stop = NULL; | |
3340 | char stopc; | |
3341 | ||
3342 | #ifdef md_flush_pending_output | |
3343 | md_flush_pending_output (); | |
3344 | #endif | |
3345 | ||
3346 | if (flag_mri) | |
3347 | stop = mri_comment_field (&stopc); | |
3348 | ||
3349 | if (is_it_end_of_statement ()) | |
3350 | { | |
3351 | demand_empty_rest_of_line (); | |
3352 | if (flag_mri) | |
3353 | mri_comment_end (stop, stopc); | |
3354 | return; | |
3355 | } | |
3356 | ||
cc1bc22a AM |
3357 | #ifdef TC_ADDRESS_BYTES |
3358 | if (nbytes == 0) | |
3359 | nbytes = TC_ADDRESS_BYTES (); | |
3360 | #endif | |
3361 | ||
252b5132 RH |
3362 | #ifdef md_cons_align |
3363 | md_cons_align (nbytes); | |
3364 | #endif | |
3365 | ||
3366 | c = 0; | |
3367 | do | |
3368 | { | |
abd63a32 | 3369 | #ifdef TC_M68K |
252b5132 RH |
3370 | if (flag_m68k_mri) |
3371 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3372 | else | |
abd63a32 | 3373 | #endif |
252b5132 RH |
3374 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
3375 | ||
3376 | if (rva) | |
3377 | { | |
3378 | if (exp.X_op == O_symbol) | |
3379 | exp.X_op = O_symbol_rva; | |
3380 | else | |
3381 | as_fatal (_("rva without symbol")); | |
3382 | } | |
3383 | emit_expr (&exp, (unsigned int) nbytes); | |
3384 | ++c; | |
3385 | } | |
3386 | while (*input_line_pointer++ == ','); | |
3387 | ||
3388 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3389 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3390 | or dcb.b. */ | |
3391 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3392 | mri_pending_align = 1; | |
3393 | ||
041ff4dd | 3394 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3395 | |
3396 | demand_empty_rest_of_line (); | |
3397 | ||
3398 | if (flag_mri) | |
3399 | mri_comment_end (stop, stopc); | |
3400 | } | |
3401 | ||
252b5132 | 3402 | void |
39e6acbd | 3403 | cons (int size) |
252b5132 RH |
3404 | { |
3405 | cons_worker (size, 0); | |
3406 | } | |
3407 | ||
041ff4dd | 3408 | void |
39e6acbd | 3409 | s_rva (int size) |
252b5132 RH |
3410 | { |
3411 | cons_worker (size, 1); | |
3412 | } | |
3413 | ||
3414 | /* Put the contents of expression EXP into the object file using | |
3415 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
3416 | ||
3417 | void | |
39e6acbd | 3418 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
3419 | { |
3420 | operatorT op; | |
3421 | register char *p; | |
3422 | valueT extra_digit = 0; | |
3423 | ||
3424 | /* Don't do anything if we are going to make another pass. */ | |
3425 | if (need_pass_2) | |
3426 | return; | |
3427 | ||
ed7d5d1a AM |
3428 | dot_value = frag_now_fix (); |
3429 | ||
252b5132 RH |
3430 | #ifndef NO_LISTING |
3431 | #ifdef OBJ_ELF | |
3432 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
3433 | appear as a four byte positive constant in the .line section, | |
3434 | followed by a 2 byte 0xffff. Look for that case here. */ | |
3435 | { | |
3436 | static int dwarf_line = -1; | |
3437 | ||
3438 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
3439 | dwarf_line = -1; | |
3440 | else if (dwarf_line >= 0 | |
3441 | && nbytes == 2 | |
3442 | && exp->X_op == O_constant | |
3443 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
3444 | listing_source_line ((unsigned int) dwarf_line); | |
3445 | else if (nbytes == 4 | |
3446 | && exp->X_op == O_constant | |
3447 | && exp->X_add_number >= 0) | |
3448 | dwarf_line = exp->X_add_number; | |
3449 | else | |
3450 | dwarf_line = -1; | |
3451 | } | |
3452 | ||
3453 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
3454 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
3455 | AT_sibling (0x12) followed by a four byte address of the sibling | |
3456 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
3457 | file. We look for that case here. */ | |
3458 | { | |
3459 | static int dwarf_file = 0; | |
3460 | ||
3461 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
3462 | dwarf_file = 0; | |
3463 | else if (dwarf_file == 0 | |
3464 | && nbytes == 2 | |
3465 | && exp->X_op == O_constant | |
3466 | && exp->X_add_number == 0x11) | |
3467 | dwarf_file = 1; | |
3468 | else if (dwarf_file == 1 | |
3469 | && nbytes == 2 | |
3470 | && exp->X_op == O_constant | |
3471 | && exp->X_add_number == 0x12) | |
3472 | dwarf_file = 2; | |
3473 | else if (dwarf_file == 2 | |
3474 | && nbytes == 4) | |
3475 | dwarf_file = 3; | |
3476 | else if (dwarf_file == 3 | |
3477 | && nbytes == 2 | |
3478 | && exp->X_op == O_constant | |
3479 | && exp->X_add_number == 0x38) | |
3480 | dwarf_file = 4; | |
3481 | else | |
3482 | dwarf_file = 0; | |
3483 | ||
3484 | /* The variable dwarf_file_string tells stringer that the string | |
3485 | may be the name of the source file. */ | |
3486 | if (dwarf_file == 4) | |
3487 | dwarf_file_string = 1; | |
3488 | else | |
3489 | dwarf_file_string = 0; | |
3490 | } | |
3491 | #endif | |
3492 | #endif | |
3493 | ||
3494 | if (check_eh_frame (exp, &nbytes)) | |
3495 | return; | |
3496 | ||
3497 | op = exp->X_op; | |
3498 | ||
3499 | /* Allow `.word 0' in the absolute section. */ | |
3500 | if (now_seg == absolute_section) | |
3501 | { | |
3502 | if (op != O_constant || exp->X_add_number != 0) | |
3503 | as_bad (_("attempt to store value in absolute section")); | |
3504 | abs_section_offset += nbytes; | |
3505 | return; | |
3506 | } | |
3507 | ||
3508 | /* Handle a negative bignum. */ | |
3509 | if (op == O_uminus | |
3510 | && exp->X_add_number == 0 | |
2b47531b ILT |
3511 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
3512 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
3513 | { |
3514 | int i; | |
3515 | unsigned long carry; | |
3516 | ||
2b47531b | 3517 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
3518 | |
3519 | /* Negate the bignum: one's complement each digit and add 1. */ | |
3520 | carry = 1; | |
3521 | for (i = 0; i < exp->X_add_number; i++) | |
3522 | { | |
3523 | unsigned long next; | |
3524 | ||
041ff4dd | 3525 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
3526 | & LITTLENUM_MASK) |
3527 | + carry); | |
3528 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3529 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3530 | } | |
3531 | ||
3532 | /* We can ignore any carry out, because it will be handled by | |
3533 | extra_digit if it is needed. */ | |
3534 | ||
3535 | extra_digit = (valueT) -1; | |
3536 | op = O_big; | |
3537 | } | |
3538 | ||
3539 | if (op == O_absent || op == O_illegal) | |
3540 | { | |
3541 | as_warn (_("zero assumed for missing expression")); | |
3542 | exp->X_add_number = 0; | |
3543 | op = O_constant; | |
3544 | } | |
3545 | else if (op == O_big && exp->X_add_number <= 0) | |
3546 | { | |
0e389e77 | 3547 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3548 | exp->X_add_number = 0; |
3549 | op = O_constant; | |
3550 | } | |
3551 | else if (op == O_register) | |
3552 | { | |
3553 | as_warn (_("register value used as expression")); | |
3554 | op = O_constant; | |
3555 | } | |
3556 | ||
3557 | p = frag_more ((int) nbytes); | |
3558 | ||
3559 | #ifndef WORKING_DOT_WORD | |
3560 | /* If we have the difference of two symbols in a word, save it on | |
3561 | the broken_words list. See the code in write.c. */ | |
3562 | if (op == O_subtract && nbytes == 2) | |
3563 | { | |
3564 | struct broken_word *x; | |
3565 | ||
3566 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3567 | x->next_broken_word = broken_words; | |
3568 | broken_words = x; | |
3569 | x->seg = now_seg; | |
3570 | x->subseg = now_subseg; | |
3571 | x->frag = frag_now; | |
3572 | x->word_goes_here = p; | |
3573 | x->dispfrag = 0; | |
3574 | x->add = exp->X_add_symbol; | |
3575 | x->sub = exp->X_op_symbol; | |
3576 | x->addnum = exp->X_add_number; | |
3577 | x->added = 0; | |
dc59a897 | 3578 | x->use_jump = 0; |
252b5132 RH |
3579 | new_broken_words++; |
3580 | return; | |
3581 | } | |
3582 | #endif | |
3583 | ||
3584 | /* If we have an integer, but the number of bytes is too large to | |
3585 | pass to md_number_to_chars, handle it as a bignum. */ | |
3586 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3587 | { | |
e5604d79 RS |
3588 | extra_digit = exp->X_unsigned ? 0 : -1; |
3589 | convert_to_bignum (exp); | |
3590 | op = O_big; | |
252b5132 RH |
3591 | } |
3592 | ||
3593 | if (op == O_constant) | |
3594 | { | |
3595 | register valueT get; | |
3596 | register valueT use; | |
3597 | register valueT mask; | |
3598 | valueT hibit; | |
3599 | register valueT unmask; | |
3600 | ||
3601 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 3602 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
3603 | if (nbytes >= sizeof (valueT)) |
3604 | { | |
3605 | mask = 0; | |
3606 | if (nbytes > sizeof (valueT)) | |
3607 | hibit = 0; | |
3608 | else | |
3609 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3610 | } | |
3611 | else | |
3612 | { | |
041ff4dd | 3613 | /* Don't store these bits. */ |
252b5132 RH |
3614 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
3615 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3616 | } | |
3617 | ||
041ff4dd | 3618 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
3619 | |
3620 | #ifdef NEVER | |
3621 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 3622 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
3623 | #endif |
3624 | ||
3625 | get = exp->X_add_number; | |
3626 | use = get & unmask; | |
3627 | if ((get & mask) != 0 | |
3628 | && ((get & mask) != mask | |
3629 | || (get & hibit) == 0)) | |
041ff4dd | 3630 | { /* Leading bits contain both 0s & 1s. */ |
0e389e77 | 3631 | as_warn (_("value 0x%lx truncated to 0x%lx"), |
252b5132 RH |
3632 | (unsigned long) get, (unsigned long) use); |
3633 | } | |
041ff4dd | 3634 | /* Put bytes in right order. */ |
252b5132 RH |
3635 | md_number_to_chars (p, use, (int) nbytes); |
3636 | } | |
3637 | else if (op == O_big) | |
3638 | { | |
3639 | unsigned int size; | |
3640 | LITTLENUM_TYPE *nums; | |
3641 | ||
3642 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
3643 | ||
3644 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
3645 | if (nbytes < size) | |
3646 | { | |
0e389e77 | 3647 | as_warn (_("bignum truncated to %d bytes"), nbytes); |
252b5132 RH |
3648 | size = nbytes; |
3649 | } | |
3650 | ||
3651 | if (target_big_endian) | |
3652 | { | |
3653 | while (nbytes > size) | |
3654 | { | |
3655 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3656 | nbytes -= CHARS_PER_LITTLENUM; | |
3657 | p += CHARS_PER_LITTLENUM; | |
3658 | } | |
3659 | ||
3660 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 3661 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3662 | { |
3663 | --nums; | |
3664 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3665 | size -= CHARS_PER_LITTLENUM; | |
3666 | p += CHARS_PER_LITTLENUM; | |
3667 | } | |
3668 | } | |
3669 | else | |
3670 | { | |
3671 | nums = generic_bignum; | |
ceac3f62 | 3672 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3673 | { |
3674 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3675 | ++nums; | |
3676 | size -= CHARS_PER_LITTLENUM; | |
3677 | p += CHARS_PER_LITTLENUM; | |
3678 | nbytes -= CHARS_PER_LITTLENUM; | |
3679 | } | |
3680 | ||
ceac3f62 | 3681 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3682 | { |
3683 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3684 | nbytes -= CHARS_PER_LITTLENUM; | |
3685 | p += CHARS_PER_LITTLENUM; | |
3686 | } | |
3687 | } | |
3688 | } | |
3689 | else | |
3690 | { | |
3691 | memset (p, 0, nbytes); | |
3692 | ||
7be1c489 | 3693 | /* Now we need to generate a fixS to record the symbol value. */ |
252b5132 | 3694 | |
252b5132 RH |
3695 | #ifdef TC_CONS_FIX_NEW |
3696 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3697 | #else | |
3698 | { | |
3699 | bfd_reloc_code_real_type r; | |
3700 | ||
3701 | switch (nbytes) | |
3702 | { | |
3703 | case 1: | |
3704 | r = BFD_RELOC_8; | |
3705 | break; | |
3706 | case 2: | |
3707 | r = BFD_RELOC_16; | |
3708 | break; | |
3709 | case 4: | |
3710 | r = BFD_RELOC_32; | |
3711 | break; | |
3712 | case 8: | |
3713 | r = BFD_RELOC_64; | |
3714 | break; | |
3715 | default: | |
3716 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
3717 | r = BFD_RELOC_32; | |
3718 | break; | |
3719 | } | |
3720 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, | |
3721 | 0, r); | |
3722 | } | |
3723 | #endif | |
252b5132 RH |
3724 | } |
3725 | } | |
3726 | \f | |
3727 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3728 | ||
3729 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
3730 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3731 | then pack them all together. We do a little better in that we allow | |
3732 | them in words, longs, etc. and we'll pack them in target byte order | |
3733 | for you. | |
3734 | ||
47eebc20 | 3735 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
3736 | entirely fit, put it in the next unit. Overflowing the bitfield is |
3737 | explicitly *not* even a warning. The bitwidth should be considered | |
3738 | a "mask". | |
3739 | ||
3740 | To use this function the tc-XXX.h file should define | |
3741 | BITFIELD_CONS_EXPRESSIONS. */ | |
3742 | ||
041ff4dd | 3743 | static void |
252b5132 RH |
3744 | parse_bitfield_cons (exp, nbytes) |
3745 | expressionS *exp; | |
3746 | unsigned int nbytes; | |
3747 | { | |
3748 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3749 | char *hold = input_line_pointer; | |
3750 | ||
3751 | (void) expression (exp); | |
3752 | ||
3753 | if (*input_line_pointer == ':') | |
041ff4dd NC |
3754 | { |
3755 | /* Bitfields. */ | |
252b5132 RH |
3756 | long value = 0; |
3757 | ||
3758 | for (;;) | |
3759 | { | |
3760 | unsigned long width; | |
3761 | ||
3762 | if (*input_line_pointer != ':') | |
3763 | { | |
3764 | input_line_pointer = hold; | |
3765 | break; | |
041ff4dd | 3766 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
3767 | |
3768 | /* In the general case, we can't allow | |
3769 | full expressions with symbol | |
3770 | differences and such. The relocation | |
3771 | entries for symbols not defined in this | |
3772 | assembly would require arbitrary field | |
3773 | widths, positions, and masks which most | |
3774 | of our current object formats don't | |
3775 | support. | |
3776 | ||
3777 | In the specific case where a symbol | |
3778 | *is* defined in this assembly, we | |
3779 | *could* build fixups and track it, but | |
3780 | this could lead to confusion for the | |
3781 | backends. I'm lazy. I'll take any | |
3782 | SEG_ABSOLUTE. I think that means that | |
3783 | you can use a previous .set or | |
041ff4dd | 3784 | .equ type symbol. xoxorich. */ |
252b5132 RH |
3785 | |
3786 | if (exp->X_op == O_absent) | |
3787 | { | |
3788 | as_warn (_("using a bit field width of zero")); | |
3789 | exp->X_add_number = 0; | |
3790 | exp->X_op = O_constant; | |
041ff4dd | 3791 | } /* Implied zero width bitfield. */ |
252b5132 RH |
3792 | |
3793 | if (exp->X_op != O_constant) | |
3794 | { | |
3795 | *input_line_pointer = '\0'; | |
3796 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
3797 | *input_line_pointer = ':'; | |
3798 | demand_empty_rest_of_line (); | |
3799 | return; | |
041ff4dd | 3800 | } /* Too complex. */ |
252b5132 RH |
3801 | |
3802 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
3803 | { | |
3804 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
3805 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
3806 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 3807 | } /* Too big. */ |
252b5132 RH |
3808 | |
3809 | if (width > bits_available) | |
3810 | { | |
3811 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
3812 | input_line_pointer = hold; | |
3813 | exp->X_add_number = value; | |
3814 | break; | |
041ff4dd | 3815 | } /* Won't fit. */ |
252b5132 | 3816 | |
ef99799a KH |
3817 | /* Skip ':'. */ |
3818 | hold = ++input_line_pointer; | |
252b5132 RH |
3819 | |
3820 | (void) expression (exp); | |
3821 | if (exp->X_op != O_constant) | |
3822 | { | |
3823 | char cache = *input_line_pointer; | |
3824 | ||
3825 | *input_line_pointer = '\0'; | |
3826 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
3827 | *input_line_pointer = cache; | |
3828 | demand_empty_rest_of_line (); | |
3829 | return; | |
041ff4dd | 3830 | } /* Too complex. */ |
252b5132 RH |
3831 | |
3832 | value |= ((~(-1 << width) & exp->X_add_number) | |
3833 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
3834 | ||
3835 | if ((bits_available -= width) == 0 | |
3836 | || is_it_end_of_statement () | |
3837 | || *input_line_pointer != ',') | |
3838 | { | |
3839 | break; | |
041ff4dd | 3840 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
3841 | |
3842 | hold = ++input_line_pointer; | |
3843 | (void) expression (exp); | |
041ff4dd | 3844 | } |
252b5132 RH |
3845 | |
3846 | exp->X_add_number = value; | |
3847 | exp->X_op = O_constant; | |
3848 | exp->X_unsigned = 1; | |
041ff4dd NC |
3849 | } |
3850 | } | |
252b5132 RH |
3851 | |
3852 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
3853 | \f | |
3854 | /* Handle an MRI style string expression. */ | |
3855 | ||
abd63a32 | 3856 | #ifdef TC_M68K |
252b5132 RH |
3857 | static void |
3858 | parse_mri_cons (exp, nbytes) | |
3859 | expressionS *exp; | |
3860 | unsigned int nbytes; | |
3861 | { | |
3862 | if (*input_line_pointer != '\'' | |
3863 | && (input_line_pointer[1] != '\'' | |
3864 | || (*input_line_pointer != 'A' | |
3865 | && *input_line_pointer != 'E'))) | |
3866 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3867 | else | |
3868 | { | |
3869 | unsigned int scan; | |
3870 | unsigned int result = 0; | |
3871 | ||
3872 | /* An MRI style string. Cut into as many bytes as will fit into | |
3873 | a nbyte chunk, left justify if necessary, and separate with | |
3874 | commas so we can try again later. */ | |
3875 | if (*input_line_pointer == 'A') | |
3876 | ++input_line_pointer; | |
3877 | else if (*input_line_pointer == 'E') | |
3878 | { | |
3879 | as_bad (_("EBCDIC constants are not supported")); | |
3880 | ++input_line_pointer; | |
3881 | } | |
3882 | ||
3883 | input_line_pointer++; | |
3884 | for (scan = 0; scan < nbytes; scan++) | |
3885 | { | |
3886 | if (*input_line_pointer == '\'') | |
3887 | { | |
3888 | if (input_line_pointer[1] == '\'') | |
3889 | { | |
3890 | input_line_pointer++; | |
3891 | } | |
3892 | else | |
3893 | break; | |
3894 | } | |
3895 | result = (result << 8) | (*input_line_pointer++); | |
3896 | } | |
3897 | ||
041ff4dd | 3898 | /* Left justify. */ |
252b5132 RH |
3899 | while (scan < nbytes) |
3900 | { | |
3901 | result <<= 8; | |
3902 | scan++; | |
3903 | } | |
f0e652b4 | 3904 | |
041ff4dd | 3905 | /* Create correct expression. */ |
252b5132 RH |
3906 | exp->X_op = O_constant; |
3907 | exp->X_add_number = result; | |
f0e652b4 | 3908 | |
041ff4dd | 3909 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
3910 | if (input_line_pointer[0] != '\'' || |
3911 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
3912 | { | |
3913 | input_line_pointer -= 2; | |
3914 | input_line_pointer[0] = ','; | |
3915 | input_line_pointer[1] = '\''; | |
3916 | } | |
3917 | else | |
3918 | input_line_pointer++; | |
3919 | } | |
3920 | } | |
abd63a32 | 3921 | #endif /* TC_M68K */ |
252b5132 RH |
3922 | \f |
3923 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3924 | ||
3925 | /* Parse a repeat expression for cons. This is used by the MIPS | |
3926 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
3927 | object file COUNT times. | |
3928 | ||
3929 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
3930 | ||
3931 | static void | |
3932 | parse_repeat_cons (exp, nbytes) | |
3933 | expressionS *exp; | |
3934 | unsigned int nbytes; | |
3935 | { | |
3936 | expressionS count; | |
3937 | register int i; | |
3938 | ||
3939 | expression (exp); | |
3940 | ||
3941 | if (*input_line_pointer != ':') | |
3942 | { | |
3943 | /* No repeat count. */ | |
3944 | return; | |
3945 | } | |
3946 | ||
3947 | ++input_line_pointer; | |
3948 | expression (&count); | |
3949 | if (count.X_op != O_constant | |
3950 | || count.X_add_number <= 0) | |
3951 | { | |
0e389e77 | 3952 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
3953 | return; |
3954 | } | |
3955 | ||
3956 | /* The cons function is going to output this expression once. So we | |
3957 | output it count - 1 times. */ | |
3958 | for (i = count.X_add_number - 1; i > 0; i--) | |
3959 | emit_expr (exp, nbytes); | |
3960 | } | |
3961 | ||
3962 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
3963 | \f | |
3964 | /* Parse a floating point number represented as a hex constant. This | |
3965 | permits users to specify the exact bits they want in the floating | |
3966 | point number. */ | |
3967 | ||
3968 | static int | |
39e6acbd | 3969 | hex_float (int float_type, char *bytes) |
252b5132 RH |
3970 | { |
3971 | int length; | |
3972 | int i; | |
3973 | ||
3974 | switch (float_type) | |
3975 | { | |
3976 | case 'f': | |
3977 | case 'F': | |
3978 | case 's': | |
3979 | case 'S': | |
3980 | length = 4; | |
3981 | break; | |
3982 | ||
3983 | case 'd': | |
3984 | case 'D': | |
3985 | case 'r': | |
3986 | case 'R': | |
3987 | length = 8; | |
3988 | break; | |
3989 | ||
3990 | case 'x': | |
3991 | case 'X': | |
3992 | length = 12; | |
3993 | break; | |
3994 | ||
3995 | case 'p': | |
3996 | case 'P': | |
3997 | length = 12; | |
3998 | break; | |
3999 | ||
4000 | default: | |
0e389e77 | 4001 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4002 | return -1; |
4003 | } | |
4004 | ||
4005 | /* It would be nice if we could go through expression to parse the | |
4006 | hex constant, but if we get a bignum it's a pain to sort it into | |
4007 | the buffer correctly. */ | |
4008 | i = 0; | |
4009 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4010 | { | |
4011 | int d; | |
4012 | ||
4013 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4014 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4015 | if (*input_line_pointer == '_') |
4016 | { | |
4017 | ++input_line_pointer; | |
4018 | continue; | |
4019 | } | |
4020 | ||
4021 | if (i >= length) | |
4022 | { | |
0e389e77 | 4023 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4024 | return -1; |
4025 | } | |
4026 | d = hex_value (*input_line_pointer) << 4; | |
4027 | ++input_line_pointer; | |
4028 | while (*input_line_pointer == '_') | |
4029 | ++input_line_pointer; | |
4030 | if (hex_p (*input_line_pointer)) | |
4031 | { | |
4032 | d += hex_value (*input_line_pointer); | |
4033 | ++input_line_pointer; | |
4034 | } | |
4035 | if (target_big_endian) | |
4036 | bytes[i] = d; | |
4037 | else | |
4038 | bytes[length - i - 1] = d; | |
4039 | ++i; | |
4040 | } | |
4041 | ||
4042 | if (i < length) | |
4043 | { | |
4044 | if (target_big_endian) | |
4045 | memset (bytes + i, 0, length - i); | |
4046 | else | |
4047 | memset (bytes, 0, length - i); | |
4048 | } | |
4049 | ||
4050 | return length; | |
4051 | } | |
4052 | ||
d6415f6c | 4053 | /* float_cons() |
f0e652b4 | 4054 | |
041ff4dd NC |
4055 | CONStruct some more frag chars of .floats .ffloats etc. |
4056 | Makes 0 or more new frags. | |
4057 | If need_pass_2 == 1, no frags are emitted. | |
4058 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4059 | |
041ff4dd NC |
4060 | A floating constant is defined by atof_generic(), except it is preceded |
4061 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4062 | reading, I decided to be incompatible. This always tries to give you | |
4063 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4064 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4065 | a choice of 2 flavours of noise according to which of 2 floating-point |
4066 | scanners you directed AS to use. | |
f0e652b4 | 4067 | |
041ff4dd | 4068 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4069 | |
4070 | void | |
39e6acbd KH |
4071 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
4072 | register int float_type /* 'f':.ffloat ... 'F':.float ... */) | |
252b5132 RH |
4073 | { |
4074 | register char *p; | |
041ff4dd NC |
4075 | int length; /* Number of chars in an object. */ |
4076 | register char *err; /* Error from scanning floating literal. */ | |
252b5132 RH |
4077 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4078 | ||
4079 | if (is_it_end_of_statement ()) | |
4080 | { | |
4081 | demand_empty_rest_of_line (); | |
4082 | return; | |
4083 | } | |
4084 | ||
4085 | #ifdef md_flush_pending_output | |
4086 | md_flush_pending_output (); | |
4087 | #endif | |
4088 | ||
4089 | do | |
4090 | { | |
041ff4dd | 4091 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4092 | SKIP_WHITESPACE (); |
4093 | ||
4094 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4095 | letter is legal. Someone may invent a "z" format and this routine |
4096 | has no use for such information. Lusers beware: you get | |
4097 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4098 | if (input_line_pointer[0] == '0' |
3882b010 | 4099 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4100 | input_line_pointer += 2; |
4101 | ||
4102 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4103 | point with the exact digits specified. */ |
252b5132 RH |
4104 | if (input_line_pointer[0] == ':') |
4105 | { | |
4106 | ++input_line_pointer; | |
4107 | length = hex_float (float_type, temp); | |
4108 | if (length < 0) | |
4109 | { | |
4110 | ignore_rest_of_line (); | |
4111 | return; | |
4112 | } | |
4113 | } | |
4114 | else | |
4115 | { | |
4116 | err = md_atof (float_type, temp, &length); | |
4117 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
4118 | know (length > 0); | |
4119 | if (err) | |
4120 | { | |
0e389e77 | 4121 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4122 | ignore_rest_of_line (); |
4123 | return; | |
4124 | } | |
4125 | } | |
4126 | ||
4127 | if (!need_pass_2) | |
4128 | { | |
4129 | int count; | |
4130 | ||
4131 | count = 1; | |
4132 | ||
4133 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4134 | if (*input_line_pointer == ':') | |
4135 | { | |
4136 | expressionS count_exp; | |
4137 | ||
4138 | ++input_line_pointer; | |
4139 | expression (&count_exp); | |
f0e652b4 | 4140 | |
252b5132 RH |
4141 | if (count_exp.X_op != O_constant |
4142 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4143 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4144 | else |
4145 | count = count_exp.X_add_number; | |
4146 | } | |
4147 | #endif | |
4148 | ||
4149 | while (--count >= 0) | |
4150 | { | |
4151 | p = frag_more (length); | |
4152 | memcpy (p, temp, (unsigned int) length); | |
4153 | } | |
4154 | } | |
4155 | SKIP_WHITESPACE (); | |
4156 | } | |
4157 | while (*input_line_pointer++ == ','); | |
4158 | ||
041ff4dd NC |
4159 | /* Put terminator back into stream. */ |
4160 | --input_line_pointer; | |
252b5132 | 4161 | demand_empty_rest_of_line (); |
041ff4dd | 4162 | } |
252b5132 | 4163 | \f |
041ff4dd | 4164 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4165 | |
4166 | static inline int | |
39e6acbd | 4167 | sizeof_sleb128 (offsetT value) |
252b5132 RH |
4168 | { |
4169 | register int size = 0; | |
4170 | register unsigned byte; | |
4171 | ||
4172 | do | |
4173 | { | |
4174 | byte = (value & 0x7f); | |
4175 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4176 | Fortunately, we can structure things so that the extra work reduces | |
4177 | to a noop on systems that do things "properly". */ | |
4178 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4179 | size += 1; | |
4180 | } | |
4181 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4182 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4183 | ||
4184 | return size; | |
4185 | } | |
4186 | ||
4187 | static inline int | |
39e6acbd | 4188 | sizeof_uleb128 (valueT value) |
252b5132 RH |
4189 | { |
4190 | register int size = 0; | |
4191 | register unsigned byte; | |
4192 | ||
4193 | do | |
4194 | { | |
4195 | byte = (value & 0x7f); | |
4196 | value >>= 7; | |
4197 | size += 1; | |
4198 | } | |
4199 | while (value != 0); | |
4200 | ||
4201 | return size; | |
4202 | } | |
4203 | ||
4204 | int | |
39e6acbd | 4205 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4206 | { |
4207 | if (sign) | |
4208 | return sizeof_sleb128 ((offsetT) value); | |
4209 | else | |
4210 | return sizeof_uleb128 (value); | |
4211 | } | |
4212 | ||
4213 | /* Output a LEB128 value. */ | |
4214 | ||
4215 | static inline int | |
39e6acbd | 4216 | output_sleb128 (char *p, offsetT value) |
252b5132 RH |
4217 | { |
4218 | register char *orig = p; | |
4219 | register int more; | |
4220 | ||
4221 | do | |
4222 | { | |
4223 | unsigned byte = (value & 0x7f); | |
4224 | ||
4225 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4226 | Fortunately, we can structure things so that the extra work reduces | |
4227 | to a noop on systems that do things "properly". */ | |
4228 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4229 | ||
4230 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4231 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4232 | if (more) | |
4233 | byte |= 0x80; | |
4234 | ||
4235 | *p++ = byte; | |
4236 | } | |
4237 | while (more); | |
4238 | ||
4239 | return p - orig; | |
4240 | } | |
4241 | ||
4242 | static inline int | |
39e6acbd | 4243 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4244 | { |
4245 | char *orig = p; | |
4246 | ||
4247 | do | |
4248 | { | |
4249 | unsigned byte = (value & 0x7f); | |
4250 | value >>= 7; | |
4251 | if (value != 0) | |
4252 | /* More bytes to follow. */ | |
4253 | byte |= 0x80; | |
4254 | ||
4255 | *p++ = byte; | |
4256 | } | |
4257 | while (value != 0); | |
4258 | ||
4259 | return p - orig; | |
4260 | } | |
4261 | ||
4262 | int | |
39e6acbd | 4263 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4264 | { |
4265 | if (sign) | |
4266 | return output_sleb128 (p, (offsetT) value); | |
4267 | else | |
4268 | return output_uleb128 (p, value); | |
4269 | } | |
4270 | ||
4271 | /* Do the same for bignums. We combine sizeof with output here in that | |
4272 | we don't output for NULL values of P. It isn't really as critical as | |
4273 | for "normal" values that this be streamlined. */ | |
4274 | ||
6d4d30bb | 4275 | static inline int |
39e6acbd | 4276 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4277 | { |
4278 | char *orig = p; | |
4279 | valueT val = 0; | |
4280 | int loaded = 0; | |
4281 | unsigned byte; | |
4282 | ||
4283 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4284 | while (size > 1 |
4285 | && bignum[size - 1] == LITTLENUM_MASK | |
4286 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4287 | size--; |
4288 | ||
4289 | do | |
4290 | { | |
e5604d79 RS |
4291 | /* OR in the next part of the littlenum. */ |
4292 | val |= (*bignum << loaded); | |
4293 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4294 | size--; | |
4295 | bignum++; | |
4296 | ||
4297 | /* Add bytes until there are less than 7 bits left in VAL | |
4298 | or until every non-sign bit has been written. */ | |
4299 | do | |
252b5132 | 4300 | { |
e5604d79 RS |
4301 | byte = val & 0x7f; |
4302 | loaded -= 7; | |
4303 | val >>= 7; | |
4304 | if (size > 0 | |
4305 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 4306 | byte |= 0x80; |
e5604d79 RS |
4307 | |
4308 | if (orig) | |
4309 | *p = byte; | |
4310 | p++; | |
252b5132 | 4311 | } |
e5604d79 RS |
4312 | while ((byte & 0x80) != 0 && loaded >= 7); |
4313 | } | |
4314 | while (size > 0); | |
252b5132 | 4315 | |
e5604d79 RS |
4316 | /* Mop up any left-over bits (of which there will be less than 7). */ |
4317 | if ((byte & 0x80) != 0) | |
4318 | { | |
4319 | /* Sign-extend VAL. */ | |
4320 | if (val & (1 << (loaded - 1))) | |
4321 | val |= ~0 << loaded; | |
252b5132 | 4322 | if (orig) |
e5604d79 | 4323 | *p = val & 0x7f; |
252b5132 RH |
4324 | p++; |
4325 | } | |
252b5132 RH |
4326 | |
4327 | return p - orig; | |
4328 | } | |
4329 | ||
6d4d30bb | 4330 | static inline int |
39e6acbd | 4331 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4332 | { |
4333 | char *orig = p; | |
4334 | valueT val = 0; | |
4335 | int loaded = 0; | |
4336 | unsigned byte; | |
4337 | ||
4338 | /* Strip leading zeros off the bignum. */ | |
4339 | /* XXX: Is this needed? */ | |
041ff4dd | 4340 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4341 | size--; |
4342 | ||
4343 | do | |
4344 | { | |
4345 | if (loaded < 7 && size > 0) | |
4346 | { | |
4347 | val |= (*bignum << loaded); | |
4348 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4349 | size--; | |
4350 | bignum++; | |
4351 | } | |
4352 | ||
4353 | byte = val & 0x7f; | |
4354 | loaded -= 7; | |
4355 | val >>= 7; | |
4356 | ||
4357 | if (size > 0 || val) | |
4358 | byte |= 0x80; | |
4359 | ||
4360 | if (orig) | |
4361 | *p = byte; | |
4362 | p++; | |
4363 | } | |
4364 | while (byte & 0x80); | |
4365 | ||
4366 | return p - orig; | |
4367 | } | |
4368 | ||
6d4d30bb | 4369 | static int |
39e6acbd | 4370 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
4371 | { |
4372 | if (sign) | |
4373 | return output_big_sleb128 (p, bignum, size); | |
4374 | else | |
4375 | return output_big_uleb128 (p, bignum, size); | |
4376 | } | |
4377 | ||
4378 | /* Generate the appropriate fragments for a given expression to emit a | |
4379 | leb128 value. */ | |
4380 | ||
87c245cc | 4381 | static void |
39e6acbd | 4382 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
4383 | { |
4384 | operatorT op = exp->X_op; | |
b7712f8d | 4385 | unsigned int nbytes; |
252b5132 RH |
4386 | |
4387 | if (op == O_absent || op == O_illegal) | |
4388 | { | |
4389 | as_warn (_("zero assumed for missing expression")); | |
4390 | exp->X_add_number = 0; | |
4391 | op = O_constant; | |
4392 | } | |
4393 | else if (op == O_big && exp->X_add_number <= 0) | |
4394 | { | |
0e389e77 | 4395 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4396 | exp->X_add_number = 0; |
4397 | op = O_constant; | |
4398 | } | |
4399 | else if (op == O_register) | |
4400 | { | |
4401 | as_warn (_("register value used as expression")); | |
4402 | op = O_constant; | |
4403 | } | |
e5604d79 RS |
4404 | else if (op == O_constant |
4405 | && sign | |
4406 | && (exp->X_add_number < 0) != !exp->X_unsigned) | |
4407 | { | |
4408 | /* We're outputting a signed leb128 and the sign of X_add_number | |
4409 | doesn't reflect the sign of the original value. Convert EXP | |
4410 | to a correctly-extended bignum instead. */ | |
4411 | convert_to_bignum (exp); | |
4412 | op = O_big; | |
4413 | } | |
252b5132 | 4414 | |
67a659f6 RH |
4415 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
4416 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 4417 | nbytes = (unsigned int) -1; |
67a659f6 RH |
4418 | if (check_eh_frame (exp, &nbytes)) |
4419 | abort (); | |
4420 | ||
371b7465 RH |
4421 | /* Let the backend know that subsequent data may be byte aligned. */ |
4422 | #ifdef md_cons_align | |
4423 | md_cons_align (1); | |
4424 | #endif | |
4425 | ||
252b5132 RH |
4426 | if (op == O_constant) |
4427 | { | |
4428 | /* If we've got a constant, emit the thing directly right now. */ | |
4429 | ||
4430 | valueT value = exp->X_add_number; | |
4431 | int size; | |
4432 | char *p; | |
4433 | ||
4434 | size = sizeof_leb128 (value, sign); | |
4435 | p = frag_more (size); | |
4436 | output_leb128 (p, value, sign); | |
4437 | } | |
4438 | else if (op == O_big) | |
4439 | { | |
4440 | /* O_big is a different sort of constant. */ | |
4441 | ||
4442 | int size; | |
4443 | char *p; | |
4444 | ||
4445 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
4446 | p = frag_more (size); | |
4447 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
4448 | } | |
4449 | else | |
4450 | { | |
041ff4dd | 4451 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
4452 | resolve things later. */ |
4453 | ||
041ff4dd | 4454 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
4455 | make_expr_symbol (exp), 0, (char *) NULL); |
4456 | } | |
4457 | } | |
4458 | ||
4459 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
4460 | ||
4461 | void | |
39e6acbd | 4462 | s_leb128 (int sign) |
252b5132 RH |
4463 | { |
4464 | expressionS exp; | |
4465 | ||
00bbdfe7 BW |
4466 | #ifdef md_flush_pending_output |
4467 | md_flush_pending_output (); | |
4468 | #endif | |
4469 | ||
041ff4dd NC |
4470 | do |
4471 | { | |
4472 | expression (&exp); | |
4473 | emit_leb128_expr (&exp, sign); | |
4474 | } | |
4475 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
4476 | |
4477 | input_line_pointer--; | |
4478 | demand_empty_rest_of_line (); | |
4479 | } | |
4480 | \f | |
041ff4dd NC |
4481 | /* We read 0 or more ',' separated, double-quoted strings. |
4482 | Caller should have checked need_pass_2 is FALSE because we don't | |
4483 | check it. */ | |
4484 | ||
4485 | void | |
39e6acbd KH |
4486 | stringer (/* Worker to do .ascii etc statements. */ |
4487 | /* Checks end-of-line. */ | |
4488 | register int append_zero /* 0: don't append '\0', else 1. */) | |
252b5132 RH |
4489 | { |
4490 | register unsigned int c; | |
4491 | char *start; | |
4492 | ||
4493 | #ifdef md_flush_pending_output | |
4494 | md_flush_pending_output (); | |
4495 | #endif | |
4496 | ||
041ff4dd NC |
4497 | /* The following awkward logic is to parse ZERO or more strings, |
4498 | comma separated. Recall a string expression includes spaces | |
4499 | before the opening '\"' and spaces after the closing '\"'. | |
4500 | We fake a leading ',' if there is (supposed to be) | |
4501 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
4502 | if (is_it_end_of_statement ()) |
4503 | { | |
041ff4dd NC |
4504 | c = 0; /* Skip loop. */ |
4505 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
4506 | } |
4507 | else | |
4508 | { | |
041ff4dd | 4509 | c = ','; /* Do loop. */ |
252b5132 | 4510 | } |
8ac9ba6c NC |
4511 | /* If we have been switched into the abs_section then we |
4512 | will not have an obstack onto which we can hang strings. */ | |
4513 | if (now_seg == absolute_section) | |
4514 | { | |
4515 | as_bad (_("strings must be placed into a section")); | |
4516 | c = 0; | |
4517 | ignore_rest_of_line (); | |
4518 | } | |
d6415f6c | 4519 | |
252b5132 RH |
4520 | while (c == ',' || c == '<' || c == '"') |
4521 | { | |
4522 | SKIP_WHITESPACE (); | |
4523 | switch (*input_line_pointer) | |
4524 | { | |
4525 | case '\"': | |
041ff4dd | 4526 | ++input_line_pointer; /*->1st char of string. */ |
252b5132 RH |
4527 | start = input_line_pointer; |
4528 | while (is_a_char (c = next_char_of_string ())) | |
4529 | { | |
4530 | FRAG_APPEND_1_CHAR (c); | |
4531 | } | |
4532 | if (append_zero) | |
4533 | { | |
4534 | FRAG_APPEND_1_CHAR (0); | |
4535 | } | |
4536 | know (input_line_pointer[-1] == '\"'); | |
4537 | ||
4538 | #ifndef NO_LISTING | |
4539 | #ifdef OBJ_ELF | |
4540 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | |
d6415f6c AM |
4541 | will emit .string with a filename in the .debug section |
4542 | after a sequence of constants. See the comment in | |
4543 | emit_expr for the sequence. emit_expr will set | |
4544 | dwarf_file_string to non-zero if this string might be a | |
4545 | source file name. */ | |
252b5132 RH |
4546 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
4547 | dwarf_file_string = 0; | |
4548 | else if (dwarf_file_string) | |
4549 | { | |
4550 | c = input_line_pointer[-1]; | |
4551 | input_line_pointer[-1] = '\0'; | |
4552 | listing_source_file (start); | |
4553 | input_line_pointer[-1] = c; | |
4554 | } | |
4555 | #endif | |
4556 | #endif | |
4557 | ||
4558 | break; | |
4559 | case '<': | |
4560 | input_line_pointer++; | |
4561 | c = get_single_number (); | |
4562 | FRAG_APPEND_1_CHAR (c); | |
4563 | if (*input_line_pointer != '>') | |
4564 | { | |
0e389e77 | 4565 | as_bad (_("expected <nn>")); |
252b5132 RH |
4566 | } |
4567 | input_line_pointer++; | |
4568 | break; | |
4569 | case ',': | |
4570 | input_line_pointer++; | |
4571 | break; | |
4572 | } | |
4573 | SKIP_WHITESPACE (); | |
4574 | c = *input_line_pointer; | |
4575 | } | |
4576 | ||
4577 | demand_empty_rest_of_line (); | |
4578 | } /* stringer() */ | |
4579 | \f | |
4580 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
4581 | high bits set. We'll probably also have trouble with | |
4582 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 4583 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 4584 | |
041ff4dd | 4585 | unsigned int |
39e6acbd | 4586 | next_char_of_string (void) |
252b5132 RH |
4587 | { |
4588 | register unsigned int c; | |
4589 | ||
4590 | c = *input_line_pointer++ & CHAR_MASK; | |
4591 | switch (c) | |
4592 | { | |
4593 | case '\"': | |
4594 | c = NOT_A_CHAR; | |
4595 | break; | |
4596 | ||
4597 | case '\n': | |
0e389e77 | 4598 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4599 | bump_line_counters (); |
4600 | break; | |
4601 | ||
4602 | #ifndef NO_STRING_ESCAPES | |
4603 | case '\\': | |
4604 | switch (c = *input_line_pointer++) | |
4605 | { | |
4606 | case 'b': | |
4607 | c = '\b'; | |
4608 | break; | |
4609 | ||
4610 | case 'f': | |
4611 | c = '\f'; | |
4612 | break; | |
4613 | ||
4614 | case 'n': | |
4615 | c = '\n'; | |
4616 | break; | |
4617 | ||
4618 | case 'r': | |
4619 | c = '\r'; | |
4620 | break; | |
4621 | ||
4622 | case 't': | |
4623 | c = '\t'; | |
4624 | break; | |
4625 | ||
4626 | case 'v': | |
4627 | c = '\013'; | |
4628 | break; | |
4629 | ||
4630 | case '\\': | |
4631 | case '"': | |
041ff4dd | 4632 | break; /* As itself. */ |
252b5132 RH |
4633 | |
4634 | case '0': | |
4635 | case '1': | |
4636 | case '2': | |
4637 | case '3': | |
4638 | case '4': | |
4639 | case '5': | |
4640 | case '6': | |
4641 | case '7': | |
4642 | case '8': | |
4643 | case '9': | |
4644 | { | |
4645 | long number; | |
4646 | int i; | |
4647 | ||
041ff4dd | 4648 | for (i = 0, number = 0; |
3882b010 | 4649 | ISDIGIT (c) && i < 3; |
041ff4dd | 4650 | c = *input_line_pointer++, i++) |
252b5132 RH |
4651 | { |
4652 | number = number * 8 + c - '0'; | |
4653 | } | |
f0e652b4 | 4654 | |
252b5132 RH |
4655 | c = number & 0xff; |
4656 | } | |
4657 | --input_line_pointer; | |
4658 | break; | |
4659 | ||
4660 | case 'x': | |
4661 | case 'X': | |
4662 | { | |
4663 | long number; | |
4664 | ||
4665 | number = 0; | |
4666 | c = *input_line_pointer++; | |
3882b010 | 4667 | while (ISXDIGIT (c)) |
252b5132 | 4668 | { |
3882b010 | 4669 | if (ISDIGIT (c)) |
252b5132 | 4670 | number = number * 16 + c - '0'; |
3882b010 | 4671 | else if (ISUPPER (c)) |
252b5132 RH |
4672 | number = number * 16 + c - 'A' + 10; |
4673 | else | |
4674 | number = number * 16 + c - 'a' + 10; | |
4675 | c = *input_line_pointer++; | |
4676 | } | |
4677 | c = number & 0xff; | |
4678 | --input_line_pointer; | |
4679 | } | |
4680 | break; | |
4681 | ||
4682 | case '\n': | |
041ff4dd | 4683 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 4684 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4685 | c = '\n'; |
4686 | bump_line_counters (); | |
4687 | break; | |
4688 | ||
4689 | default: | |
4690 | ||
4691 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 4692 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
4693 | c = '?'; |
4694 | #endif /* ONLY_STANDARD_ESCAPES */ | |
4695 | ||
4696 | break; | |
041ff4dd | 4697 | } |
252b5132 RH |
4698 | break; |
4699 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
4700 | ||
4701 | default: | |
4702 | break; | |
041ff4dd | 4703 | } |
252b5132 | 4704 | return (c); |
041ff4dd | 4705 | } |
252b5132 RH |
4706 | \f |
4707 | static segT | |
39e6acbd | 4708 | get_segmented_expression (register expressionS *expP) |
252b5132 RH |
4709 | { |
4710 | register segT retval; | |
4711 | ||
4712 | retval = expression (expP); | |
4713 | if (expP->X_op == O_illegal | |
4714 | || expP->X_op == O_absent | |
4715 | || expP->X_op == O_big) | |
4716 | { | |
0e389e77 | 4717 | as_bad (_("expected address expression")); |
252b5132 RH |
4718 | expP->X_op = O_constant; |
4719 | expP->X_add_number = 0; | |
4720 | retval = absolute_section; | |
4721 | } | |
4722 | return retval; | |
4723 | } | |
4724 | ||
041ff4dd | 4725 | static segT |
39e6acbd | 4726 | get_known_segmented_expression (register expressionS *expP) |
252b5132 RH |
4727 | { |
4728 | register segT retval; | |
4729 | ||
4730 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
4731 | { | |
4732 | /* There is no easy way to extract the undefined symbol from the | |
4733 | expression. */ | |
4734 | if (expP->X_add_symbol != NULL | |
4735 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
4736 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
4737 | S_GET_NAME (expP->X_add_symbol)); | |
4738 | else | |
4739 | as_warn (_("some symbol undefined; zero assumed")); | |
4740 | retval = absolute_section; | |
4741 | expP->X_op = O_constant; | |
4742 | expP->X_add_number = 0; | |
4743 | } | |
4744 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
4745 | return (retval); | |
041ff4dd | 4746 | } |
252b5132 | 4747 | |
041ff4dd | 4748 | char /* Return terminator. */ |
39e6acbd | 4749 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
4750 | { |
4751 | /* FIXME: val_pointer should probably be offsetT *. */ | |
4752 | *val_pointer = (long) get_absolute_expression (); | |
4753 | return (*input_line_pointer++); | |
4754 | } | |
4755 | \f | |
041ff4dd NC |
4756 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
4757 | Give a warning if that happens. */ | |
4758 | ||
252b5132 | 4759 | char * |
39e6acbd | 4760 | demand_copy_C_string (int *len_pointer) |
252b5132 RH |
4761 | { |
4762 | register char *s; | |
4763 | ||
4764 | if ((s = demand_copy_string (len_pointer)) != 0) | |
4765 | { | |
4766 | register int len; | |
4767 | ||
4768 | for (len = *len_pointer; len > 0; len--) | |
4769 | { | |
4770 | if (*s == 0) | |
4771 | { | |
4772 | s = 0; | |
4773 | len = 1; | |
4774 | *len_pointer = 0; | |
0e389e77 | 4775 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
4776 | } |
4777 | } | |
4778 | } | |
f0e652b4 | 4779 | |
252b5132 RH |
4780 | return s; |
4781 | } | |
4782 | \f | |
041ff4dd NC |
4783 | /* Demand string, but return a safe (=private) copy of the string. |
4784 | Return NULL if we can't read a string here. */ | |
4785 | ||
252b5132 | 4786 | char * |
39e6acbd | 4787 | demand_copy_string (int *lenP) |
252b5132 RH |
4788 | { |
4789 | register unsigned int c; | |
4790 | register int len; | |
4791 | char *retval; | |
4792 | ||
4793 | len = 0; | |
4794 | SKIP_WHITESPACE (); | |
4795 | if (*input_line_pointer == '\"') | |
4796 | { | |
041ff4dd | 4797 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
4798 | |
4799 | while (is_a_char (c = next_char_of_string ())) | |
4800 | { | |
4801 | obstack_1grow (¬es, c); | |
4802 | len++; | |
4803 | } | |
4804 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 4805 | null terminated string. */ |
252b5132 RH |
4806 | obstack_1grow (¬es, '\0'); |
4807 | retval = obstack_finish (¬es); | |
4808 | } | |
4809 | else | |
4810 | { | |
c95b35a9 | 4811 | as_bad (_("missing string")); |
252b5132 RH |
4812 | retval = NULL; |
4813 | ignore_rest_of_line (); | |
4814 | } | |
4815 | *lenP = len; | |
4816 | return (retval); | |
041ff4dd | 4817 | } |
252b5132 | 4818 | \f |
041ff4dd | 4819 | /* In: Input_line_pointer->next character. |
f0e652b4 | 4820 | |
041ff4dd | 4821 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 4822 | |
041ff4dd NC |
4823 | Out: 1 if input_line_pointer->end-of-line. */ |
4824 | ||
4825 | int | |
39e6acbd | 4826 | is_it_end_of_statement (void) |
252b5132 RH |
4827 | { |
4828 | SKIP_WHITESPACE (); | |
4829 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 4830 | } |
252b5132 | 4831 | |
041ff4dd | 4832 | void |
39e6acbd | 4833 | equals (char *sym_name, int reassign) |
252b5132 | 4834 | { |
252b5132 RH |
4835 | char *stop = NULL; |
4836 | char stopc; | |
4837 | ||
4838 | input_line_pointer++; | |
4839 | if (*input_line_pointer == '=') | |
4840 | input_line_pointer++; | |
4841 | ||
4842 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
4843 | input_line_pointer++; | |
4844 | ||
4845 | if (flag_mri) | |
4846 | stop = mri_comment_field (&stopc); | |
4847 | ||
be95a9c1 | 4848 | assign_symbol (sym_name, !reassign); |
252b5132 RH |
4849 | |
4850 | if (flag_mri) | |
31d20a21 AM |
4851 | { |
4852 | demand_empty_rest_of_line (); | |
4853 | mri_comment_end (stop, stopc); | |
4854 | } | |
041ff4dd | 4855 | } |
252b5132 | 4856 | |
7e005732 NC |
4857 | /* .incbin -- include a file verbatim at the current location. */ |
4858 | ||
4859 | void | |
39e6acbd | 4860 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
4861 | { |
4862 | FILE * binfile; | |
4863 | char * path; | |
4864 | char * filename; | |
4865 | char * binfrag; | |
4866 | long skip = 0; | |
4867 | long count = 0; | |
4868 | long bytes; | |
4869 | int len; | |
4870 | ||
4871 | #ifdef md_flush_pending_output | |
4872 | md_flush_pending_output (); | |
4873 | #endif | |
4874 | ||
4875 | SKIP_WHITESPACE (); | |
4876 | filename = demand_copy_string (& len); | |
4877 | if (filename == NULL) | |
4878 | return; | |
4879 | ||
4880 | SKIP_WHITESPACE (); | |
4881 | ||
4882 | /* Look for optional skip and count. */ | |
4883 | if (* input_line_pointer == ',') | |
4884 | { | |
4885 | ++ input_line_pointer; | |
4886 | skip = get_absolute_expression (); | |
4887 | ||
4888 | SKIP_WHITESPACE (); | |
4889 | ||
4890 | if (* input_line_pointer == ',') | |
4891 | { | |
4892 | ++ input_line_pointer; | |
4893 | ||
4894 | count = get_absolute_expression (); | |
4895 | if (count == 0) | |
4896 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
4897 | ||
4898 | SKIP_WHITESPACE (); | |
4899 | } | |
4900 | } | |
4901 | ||
4902 | demand_empty_rest_of_line (); | |
4903 | ||
4904 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 4905 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
4906 | if (binfile == NULL) |
4907 | { | |
4908 | int i; | |
4909 | ||
4910 | path = xmalloc ((unsigned long) len + include_dir_maxlen + 5); | |
4911 | ||
4912 | for (i = 0; i < include_dir_count; i++) | |
4913 | { | |
4914 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
4915 | ||
f740e790 | 4916 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
4917 | if (binfile != NULL) |
4918 | break; | |
4919 | } | |
4920 | ||
4921 | if (binfile == NULL) | |
4922 | as_bad (_("file not found: %s"), filename); | |
4923 | } | |
4924 | else | |
4925 | path = xstrdup (filename); | |
4926 | ||
4927 | if (binfile) | |
4928 | { | |
f740e790 NC |
4929 | long file_len; |
4930 | ||
7e005732 NC |
4931 | register_dependency (path); |
4932 | ||
4933 | /* Compute the length of the file. */ | |
4934 | if (fseek (binfile, 0, SEEK_END) != 0) | |
4935 | { | |
4936 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
4937 | goto done; | |
4938 | } | |
f740e790 | 4939 | file_len = ftell (binfile); |
7e005732 | 4940 | |
c556cc9c | 4941 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 4942 | if (count == 0) |
c556cc9c | 4943 | count = file_len - skip; |
7e005732 | 4944 | |
c556cc9c | 4945 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 4946 | { |
c556cc9c | 4947 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 4948 | skip, count, file_len); |
7e005732 NC |
4949 | goto done; |
4950 | } | |
4951 | ||
4952 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
4953 | { | |
4954 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
4955 | goto done; | |
4956 | } | |
4957 | ||
4958 | /* Allocate frag space and store file contents in it. */ | |
4959 | binfrag = frag_more (count); | |
4960 | ||
4961 | bytes = fread (binfrag, 1, count, binfile); | |
4962 | if (bytes < count) | |
4963 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
4964 | path, bytes, count); | |
4965 | } | |
4966 | done: | |
4967 | if (binfile != NULL) | |
4968 | fclose (binfile); | |
4969 | if (path) | |
4970 | free (path); | |
4971 | } | |
4972 | ||
041ff4dd | 4973 | /* .include -- include a file at this point. */ |
252b5132 | 4974 | |
041ff4dd | 4975 | void |
39e6acbd | 4976 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 4977 | { |
252b5132 RH |
4978 | char *filename; |
4979 | int i; | |
4980 | FILE *try; | |
4981 | char *path; | |
4982 | ||
041ff4dd | 4983 | if (!flag_m68k_mri) |
252b5132 RH |
4984 | { |
4985 | filename = demand_copy_string (&i); | |
4986 | if (filename == NULL) | |
4987 | { | |
4988 | /* demand_copy_string has already printed an error and | |
d6415f6c | 4989 | called ignore_rest_of_line. */ |
252b5132 RH |
4990 | return; |
4991 | } | |
4992 | } | |
4993 | else | |
4994 | { | |
4995 | SKIP_WHITESPACE (); | |
4996 | i = 0; | |
041ff4dd | 4997 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
4998 | && *input_line_pointer != ' ' |
4999 | && *input_line_pointer != '\t') | |
5000 | { | |
5001 | obstack_1grow (¬es, *input_line_pointer); | |
5002 | ++input_line_pointer; | |
5003 | ++i; | |
5004 | } | |
f0e652b4 | 5005 | |
252b5132 RH |
5006 | obstack_1grow (¬es, '\0'); |
5007 | filename = obstack_finish (¬es); | |
041ff4dd | 5008 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5009 | ++input_line_pointer; |
5010 | } | |
f0e652b4 | 5011 | |
252b5132 RH |
5012 | demand_empty_rest_of_line (); |
5013 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5014 | |
252b5132 RH |
5015 | for (i = 0; i < include_dir_count; i++) |
5016 | { | |
5017 | strcpy (path, include_dirs[i]); | |
5018 | strcat (path, "/"); | |
5019 | strcat (path, filename); | |
f740e790 | 5020 | if (0 != (try = fopen (path, FOPEN_RT))) |
252b5132 RH |
5021 | { |
5022 | fclose (try); | |
5023 | goto gotit; | |
5024 | } | |
5025 | } | |
f0e652b4 | 5026 | |
252b5132 RH |
5027 | free (path); |
5028 | path = filename; | |
5029 | gotit: | |
041ff4dd | 5030 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5031 | register_dependency (path); |
9f10757c | 5032 | input_scrub_insert_file (path); |
041ff4dd | 5033 | } |
252b5132 | 5034 | |
041ff4dd | 5035 | void |
39e6acbd | 5036 | add_include_dir (char *path) |
252b5132 RH |
5037 | { |
5038 | int i; | |
5039 | ||
5040 | if (include_dir_count == 0) | |
5041 | { | |
5042 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5043 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5044 | include_dir_count = 2; |
5045 | } | |
5046 | else | |
5047 | { | |
5048 | include_dir_count++; | |
041ff4dd NC |
5049 | include_dirs = |
5050 | (char **) realloc (include_dirs, | |
5051 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5052 | } |
5053 | ||
041ff4dd | 5054 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5055 | |
5056 | i = strlen (path); | |
5057 | if (i > include_dir_maxlen) | |
5058 | include_dir_maxlen = i; | |
041ff4dd | 5059 | } |
252b5132 RH |
5060 | \f |
5061 | /* Output debugging information to denote the source file. */ | |
5062 | ||
5063 | static void | |
39e6acbd | 5064 | generate_file_debug (void) |
252b5132 RH |
5065 | { |
5066 | if (debug_type == DEBUG_STABS) | |
5067 | stabs_generate_asm_file (); | |
5068 | } | |
5069 | ||
5070 | /* Output line number debugging information for the current source line. */ | |
5071 | ||
5072 | void | |
39e6acbd | 5073 | generate_lineno_debug (void) |
252b5132 | 5074 | { |
252b5132 RH |
5075 | switch (debug_type) |
5076 | { | |
5077 | case DEBUG_UNSPECIFIED: | |
5078 | case DEBUG_NONE: | |
4dc7ead9 | 5079 | case DEBUG_DWARF: |
252b5132 RH |
5080 | break; |
5081 | case DEBUG_STABS: | |
5082 | stabs_generate_asm_lineno (); | |
5083 | break; | |
5084 | case DEBUG_ECOFF: | |
5085 | ecoff_generate_asm_lineno (); | |
5086 | break; | |
252b5132 | 5087 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5088 | /* ??? We could here indicate to dwarf2dbg.c that something |
5089 | has changed. However, since there is additional backend | |
5090 | support that is required (calling dwarf2_emit_insn), we | |
5091 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5092 | break; |
5093 | } | |
5094 | } | |
5095 | ||
5096 | /* Output debugging information to mark a function entry point or end point. | |
5097 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5098 | ||
5099 | void | |
39e6acbd | 5100 | s_func (int end_p) |
252b5132 RH |
5101 | { |
5102 | do_s_func (end_p, NULL); | |
5103 | } | |
5104 | ||
5105 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5106 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5107 | ||
87c245cc | 5108 | static void |
39e6acbd | 5109 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5110 | { |
5111 | /* Record the current function so that we can issue an error message for | |
5112 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5113 | arguments. */ | |
5114 | static char *current_name; | |
5115 | static char *current_label; | |
5116 | ||
5117 | if (end_p) | |
5118 | { | |
5119 | if (current_name == NULL) | |
5120 | { | |
5121 | as_bad (_("missing .func")); | |
5122 | ignore_rest_of_line (); | |
5123 | return; | |
5124 | } | |
5125 | ||
5126 | if (debug_type == DEBUG_STABS) | |
5127 | stabs_generate_asm_endfunc (current_name, current_label); | |
5128 | ||
5129 | current_name = current_label = NULL; | |
5130 | } | |
5131 | else /* ! end_p */ | |
5132 | { | |
041ff4dd NC |
5133 | char *name, *label; |
5134 | char delim1, delim2; | |
252b5132 RH |
5135 | |
5136 | if (current_name != NULL) | |
5137 | { | |
5138 | as_bad (_(".endfunc missing for previous .func")); | |
5139 | ignore_rest_of_line (); | |
5140 | return; | |
5141 | } | |
5142 | ||
5143 | name = input_line_pointer; | |
5144 | delim1 = get_symbol_end (); | |
5145 | name = xstrdup (name); | |
5146 | *input_line_pointer = delim1; | |
5147 | SKIP_WHITESPACE (); | |
5148 | if (*input_line_pointer != ',') | |
5149 | { | |
5150 | if (default_prefix) | |
5151 | asprintf (&label, "%s%s", default_prefix, name); | |
5152 | else | |
5153 | { | |
7be1c489 | 5154 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
5155 | /* Missing entry point, use function's name with the leading |
5156 | char prepended. */ | |
5157 | if (leading_char) | |
5158 | asprintf (&label, "%c%s", leading_char, name); | |
5159 | else | |
5160 | label = name; | |
5161 | } | |
5162 | } | |
5163 | else | |
5164 | { | |
5165 | ++input_line_pointer; | |
5166 | SKIP_WHITESPACE (); | |
5167 | label = input_line_pointer; | |
5168 | delim2 = get_symbol_end (); | |
5169 | label = xstrdup (label); | |
5170 | *input_line_pointer = delim2; | |
5171 | } | |
5172 | ||
5173 | if (debug_type == DEBUG_STABS) | |
5174 | stabs_generate_asm_func (name, label); | |
5175 | ||
5176 | current_name = name; | |
5177 | current_label = label; | |
5178 | } | |
5179 | ||
5180 | demand_empty_rest_of_line (); | |
5181 | } | |
5182 | \f | |
041ff4dd | 5183 | void |
39e6acbd | 5184 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5185 | { |
40a4d956 | 5186 | ignore_rest_of_line (); |
252b5132 RH |
5187 | } |
5188 | ||
252b5132 | 5189 | void |
39e6acbd | 5190 | read_print_statistics (FILE *file) |
252b5132 RH |
5191 | { |
5192 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5193 | } | |
5194 | ||
041ff4dd NC |
5195 | /* Inserts the given line into the input stream. |
5196 | ||
9f10757c TW |
5197 | This call avoids macro/conditionals nesting checking, since the contents of |
5198 | the line are assumed to replace the contents of a line already scanned. | |
5199 | ||
47eebc20 | 5200 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
5201 | called by md_start_line_hook(). The given line is assumed to already be |
5202 | properly scrubbed. */ | |
5203 | ||
5204 | void | |
39e6acbd | 5205 | input_scrub_insert_line (const char *line) |
9f10757c TW |
5206 | { |
5207 | sb newline; | |
5208 | sb_new (&newline); | |
5209 | sb_add_string (&newline, line); | |
5210 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5211 | sb_kill (&newline); | |
5212 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5213 | } | |
5214 | ||
5215 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5216 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5217 | |
5218 | void | |
39e6acbd | 5219 | input_scrub_insert_file (char *path) |
9f10757c TW |
5220 | { |
5221 | input_scrub_include_file (path, input_line_pointer); | |
5222 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5223 | } | |
40a4d956 JB |
5224 | |
5225 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
5226 | ||
5227 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
5228 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
5229 | #endif | |
5230 | ||
5231 | static char * | |
5232 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED) | |
5233 | { | |
5234 | char inquote = '\0'; | |
5235 | int inescape = 0; | |
5236 | ||
5237 | while (!is_end_of_line[(unsigned char) *s] | |
5238 | || (inquote && !ISCNTRL (*s)) | |
5239 | || (inquote == '\'' && flag_mri) | |
5240 | #ifdef TC_EOL_IN_INSN | |
5241 | || (insn && TC_EOL_IN_INSN (s)) | |
5242 | #endif | |
5243 | ) | |
5244 | { | |
5245 | if (mri_string && *s == '\'') | |
5246 | inquote ^= *s; | |
5247 | else if (inescape) | |
5248 | inescape = 0; | |
5249 | else if (*s == '\\') | |
5250 | inescape = 1; | |
5251 | else if (!inquote | |
5252 | ? *s == '"' | |
5253 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
5254 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
5255 | #endif | |
5256 | : *s == inquote) | |
5257 | inquote ^= *s; | |
5258 | ++s; | |
5259 | } | |
5260 | if (inquote) | |
5261 | as_warn (_("missing closing `%c'"), inquote); | |
5262 | if (inescape) | |
5263 | as_warn (_("stray `\\'")); | |
5264 | return s; | |
5265 | } | |
5266 | ||
5267 | char * | |
5268 | find_end_of_line (char *s, int mri_string) | |
5269 | { | |
5270 | return _find_end_of_line (s, mri_string, 0); | |
5271 | } |