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