Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
b90efa5b | 2 | Copyright (C) 1986-2015 Free Software Foundation, Inc. |
252b5132 | 3 | |
ec2655a6 | 4 | This file is part of GAS, the GNU Assembler. |
252b5132 | 5 | |
ec2655a6 NC |
6 | GAS is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
252b5132 | 10 | |
ec2655a6 NC |
11 | GAS is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
252b5132 | 15 | |
ec2655a6 NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
252b5132 | 20 | |
59c871b4 | 21 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
041ff4dd NC |
22 | But then, GNU isn't spozed to run on your machine anyway. |
23 | (RMS is so shortsighted sometimes.) */ | |
041ff4dd | 24 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 25 | |
252b5132 | 26 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 27 | grow when we do 4361 style flonums. */ |
252b5132 RH |
28 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
29 | ||
47eebc20 | 30 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
31 | Another group of these functions is in the expr.c module. */ |
32 | ||
252b5132 | 33 | #include "as.h" |
3882b010 | 34 | #include "safe-ctype.h" |
252b5132 RH |
35 | #include "subsegs.h" |
36 | #include "sb.h" | |
37 | #include "macro.h" | |
38 | #include "obstack.h" | |
252b5132 | 39 | #include "ecoff.h" |
54cfded0 | 40 | #include "dw2gencfi.h" |
7bfd842d | 41 | #include "wchar.h" |
252b5132 RH |
42 | |
43 | #ifndef TC_START_LABEL | |
5e8c8f8f | 44 | #define TC_START_LABEL(x,y,z) (x == ':') |
252b5132 RH |
45 | #endif |
46 | ||
8684e216 HPN |
47 | /* Set by the object-format or the target. */ |
48 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 49 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 50 | do \ |
d6415f6c AM |
51 | { \ |
52 | if ((SIZE) >= 8) \ | |
53 | (P2VAR) = 3; \ | |
54 | else if ((SIZE) >= 4) \ | |
55 | (P2VAR) = 2; \ | |
56 | else if ((SIZE) >= 2) \ | |
57 | (P2VAR) = 1; \ | |
58 | else \ | |
59 | (P2VAR) = 0; \ | |
041ff4dd NC |
60 | } \ |
61 | while (0) | |
8684e216 HPN |
62 | #endif |
63 | ||
041ff4dd | 64 | char *input_line_pointer; /*->next char of source file to parse. */ |
252b5132 RH |
65 | |
66 | #if BITS_PER_CHAR != 8 | |
67 | /* The following table is indexed by[(char)] and will break if | |
68 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
69 | die horribly; | |
70 | #endif | |
71 | ||
72 | #ifndef LEX_AT | |
252b5132 RH |
73 | #define LEX_AT 0 |
74 | #endif | |
75 | ||
76 | #ifndef LEX_BR | |
77 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
78 | #define LEX_BR 0 | |
79 | #endif | |
80 | ||
81 | #ifndef LEX_PCT | |
82 | /* The Delta 68k assembler permits % inside label names. */ | |
83 | #define LEX_PCT 0 | |
84 | #endif | |
85 | ||
86 | #ifndef LEX_QM | |
87 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
88 | #define LEX_QM 0 | |
89 | #endif | |
90 | ||
58b5739a | 91 | #ifndef LEX_HASH |
800eeca4 JW |
92 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
93 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
94 | #define LEX_HASH 0 |
95 | #endif | |
96 | ||
252b5132 | 97 | #ifndef LEX_DOLLAR |
252b5132 RH |
98 | #define LEX_DOLLAR 3 |
99 | #endif | |
100 | ||
101 | #ifndef LEX_TILDE | |
102 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
103 | #define LEX_TILDE 0 | |
104 | #endif | |
105 | ||
041ff4dd | 106 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 107 | char lex_type[256] = { |
252b5132 RH |
108 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
109 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 110 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
111 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
112 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
113 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
114 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 115 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
116 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
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 | }; | |
125 | ||
041ff4dd | 126 | /* In: a character. |
d67ffd56 L |
127 | Out: 1 if this character ends a line. |
128 | 2 if this character is a line separator. */ | |
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 | ||
fa94de6b RM |
211 | /* If the target defines the md_frag_max_var hook then we know |
212 | enough to implement the .bundle_align_mode features. */ | |
213 | #ifdef md_frag_max_var | |
214 | # define HANDLE_BUNDLE | |
215 | #endif | |
216 | ||
217 | #ifdef HANDLE_BUNDLE | |
218 | /* .bundle_align_mode sets this. Normally it's zero. When nonzero, | |
219 | it's the exponent of the bundle size, and aligned instruction bundle | |
220 | mode is in effect. */ | |
221 | static unsigned int bundle_align_p2; | |
222 | ||
223 | /* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets | |
224 | bundle_lock_frag to frag_now and then starts a new frag with | |
225 | frag_align_code. At the same time, bundle_lock_frain gets frchain_now, | |
226 | so that .bundle_unlock can verify that we didn't change segments. | |
227 | .bundle_unlock resets both to NULL. If we detect a bundling violation, | |
228 | then we reset bundle_lock_frchain to NULL as an indicator that we've | |
229 | already diagnosed the error with as_bad and don't need a cascade of | |
230 | redundant errors, but bundle_lock_frag remains set to indicate that | |
231 | we are expecting to see .bundle_unlock. */ | |
232 | static fragS *bundle_lock_frag; | |
233 | static frchainS *bundle_lock_frchain; | |
d416e51d RM |
234 | |
235 | /* This is incremented by .bundle_lock and decremented by .bundle_unlock, | |
236 | to allow nesting. */ | |
237 | static unsigned int bundle_lock_depth; | |
fa94de6b RM |
238 | #endif |
239 | ||
87c245cc | 240 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd KH |
241 | static void do_align (int, char *, int, int); |
242 | static void s_align (int, int); | |
caa32fe5 | 243 | static void s_altmacro (int); |
057f53c1 | 244 | static void s_bad_end (int); |
05e9452c | 245 | static void s_reloc (int); |
39e6acbd | 246 | static int hex_float (int, char *); |
39e6acbd KH |
247 | static segT get_known_segmented_expression (expressionS * expP); |
248 | static void pobegin (void); | |
39a45edc | 249 | static size_t get_non_macro_line_sb (sb *); |
39e6acbd | 250 | static void generate_file_debug (void); |
7592cfd7 | 251 | static char *_find_end_of_line (char *, int, int, int); |
252b5132 | 252 | \f |
252b5132 | 253 | void |
39e6acbd | 254 | read_begin (void) |
252b5132 RH |
255 | { |
256 | const char *p; | |
257 | ||
258 | pobegin (); | |
259 | obj_read_begin_hook (); | |
260 | ||
261 | /* Something close -- but not too close -- to a multiple of 1024. | |
262 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
263 | obstack_begin (¬es, chunksize); | |
264 | obstack_begin (&cond_obstack, chunksize); | |
265 | ||
2e6976a8 DG |
266 | #ifndef tc_line_separator_chars |
267 | #define tc_line_separator_chars line_separator_chars | |
268 | #endif | |
041ff4dd | 269 | /* Use machine dependent syntax. */ |
2e6976a8 | 270 | for (p = tc_line_separator_chars; *p; p++) |
d67ffd56 | 271 | is_end_of_line[(unsigned char) *p] = 2; |
041ff4dd | 272 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
273 | |
274 | if (flag_mri) | |
275 | lex_type['?'] = 3; | |
276 | } | |
277 | \f | |
cc1bc22a | 278 | #ifndef TC_ADDRESS_BYTES |
cc1bc22a AM |
279 | #define TC_ADDRESS_BYTES address_bytes |
280 | ||
281 | static inline int | |
282 | address_bytes (void) | |
283 | { | |
284 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
285 | contain an address. */ | |
286 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
287 | n |= n >> 1; | |
288 | n |= n >> 2; | |
289 | n += 1; | |
290 | return n; | |
291 | } | |
292 | #endif | |
cc1bc22a | 293 | |
041ff4dd | 294 | /* Set up pseudo-op tables. */ |
252b5132 RH |
295 | |
296 | static struct hash_control *po_hash; | |
297 | ||
ef99799a | 298 | static const pseudo_typeS potable[] = { |
252b5132 RH |
299 | {"abort", s_abort, 0}, |
300 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 301 | {"altmacro", s_altmacro, 1}, |
38a57ae7 NC |
302 | {"ascii", stringer, 8+0}, |
303 | {"asciz", stringer, 8+1}, | |
252b5132 RH |
304 | {"balign", s_align_bytes, 0}, |
305 | {"balignw", s_align_bytes, -2}, | |
306 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 307 | /* block */ |
fa94de6b RM |
308 | #ifdef HANDLE_BUNDLE |
309 | {"bundle_align_mode", s_bundle_align_mode, 0}, | |
310 | {"bundle_lock", s_bundle_lock, 0}, | |
311 | {"bundle_unlock", s_bundle_unlock, 0}, | |
312 | #endif | |
252b5132 RH |
313 | {"byte", cons, 1}, |
314 | {"comm", s_comm, 0}, | |
315 | {"common", s_mri_common, 0}, | |
316 | {"common.s", s_mri_common, 1}, | |
317 | {"data", s_data, 0}, | |
318 | {"dc", cons, 2}, | |
cc1bc22a AM |
319 | #ifdef TC_ADDRESS_BYTES |
320 | {"dc.a", cons, 0}, | |
321 | #endif | |
252b5132 RH |
322 | {"dc.b", cons, 1}, |
323 | {"dc.d", float_cons, 'd'}, | |
324 | {"dc.l", cons, 4}, | |
325 | {"dc.s", float_cons, 'f'}, | |
326 | {"dc.w", cons, 2}, | |
327 | {"dc.x", float_cons, 'x'}, | |
328 | {"dcb", s_space, 2}, | |
329 | {"dcb.b", s_space, 1}, | |
330 | {"dcb.d", s_float_space, 'd'}, | |
331 | {"dcb.l", s_space, 4}, | |
332 | {"dcb.s", s_float_space, 'f'}, | |
333 | {"dcb.w", s_space, 2}, | |
334 | {"dcb.x", s_float_space, 'x'}, | |
335 | {"ds", s_space, 2}, | |
336 | {"ds.b", s_space, 1}, | |
337 | {"ds.d", s_space, 8}, | |
338 | {"ds.l", s_space, 4}, | |
339 | {"ds.p", s_space, 12}, | |
340 | {"ds.s", s_space, 4}, | |
341 | {"ds.w", s_space, 2}, | |
342 | {"ds.x", s_space, 12}, | |
343 | {"debug", s_ignore, 0}, | |
344 | #ifdef S_SET_DESC | |
345 | {"desc", s_desc, 0}, | |
346 | #endif | |
041ff4dd | 347 | /* dim */ |
252b5132 | 348 | {"double", float_cons, 'd'}, |
041ff4dd NC |
349 | /* dsect */ |
350 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
351 | {"else", s_else, 0}, |
352 | {"elsec", s_else, 0}, | |
3fd9f047 | 353 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
354 | {"end", s_end, 0}, |
355 | {"endc", s_endif, 0}, | |
356 | {"endfunc", s_func, 1}, | |
357 | {"endif", s_endif, 0}, | |
057f53c1 JB |
358 | {"endm", s_bad_end, 0}, |
359 | {"endr", s_bad_end, 1}, | |
041ff4dd | 360 | /* endef */ |
252b5132 RH |
361 | {"equ", s_set, 0}, |
362 | {"equiv", s_set, 1}, | |
9497f5ac | 363 | {"eqv", s_set, -1}, |
252b5132 | 364 | {"err", s_err, 0}, |
d190d046 | 365 | {"error", s_errwarn, 1}, |
252b5132 | 366 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
367 | /* extend */ |
368 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 | 369 | {"appfile", s_app_file, 1}, |
93e914b2 | 370 | {"appline", s_app_line, 1}, |
252b5132 RH |
371 | {"fail", s_fail, 0}, |
372 | {"file", s_app_file, 0}, | |
373 | {"fill", s_fill, 0}, | |
374 | {"float", float_cons, 'f'}, | |
375 | {"format", s_ignore, 0}, | |
376 | {"func", s_func, 0}, | |
377 | {"global", s_globl, 0}, | |
378 | {"globl", s_globl, 0}, | |
379 | {"hword", cons, 2}, | |
380 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 381 | {"ifb", s_ifb, 1}, |
252b5132 RH |
382 | {"ifc", s_ifc, 0}, |
383 | {"ifdef", s_ifdef, 0}, | |
384 | {"ifeq", s_if, (int) O_eq}, | |
385 | {"ifeqs", s_ifeqs, 0}, | |
386 | {"ifge", s_if, (int) O_ge}, | |
387 | {"ifgt", s_if, (int) O_gt}, | |
388 | {"ifle", s_if, (int) O_le}, | |
389 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 390 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
391 | {"ifnc", s_ifc, 1}, |
392 | {"ifndef", s_ifdef, 1}, | |
393 | {"ifne", s_if, (int) O_ne}, | |
394 | {"ifnes", s_ifeqs, 1}, | |
395 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 396 | {"incbin", s_incbin, 0}, |
252b5132 RH |
397 | {"include", s_include, 0}, |
398 | {"int", cons, 4}, | |
399 | {"irp", s_irp, 0}, | |
400 | {"irep", s_irp, 0}, | |
401 | {"irpc", s_irp, 1}, | |
402 | {"irepc", s_irp, 1}, | |
403 | {"lcomm", s_lcomm, 0}, | |
c2069bb2 | 404 | {"lflags", s_ignore, 0}, /* Listing flags. */ |
93e914b2 | 405 | {"linefile", s_app_line, 0}, |
252b5132 | 406 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 407 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
408 | {"llen", listing_psize, 1}, |
409 | {"long", cons, 4}, | |
410 | {"lsym", s_lsym, 0}, | |
411 | {"macro", s_macro, 0}, | |
412 | {"mexit", s_mexit, 0}, | |
413 | {"mri", s_mri, 0}, | |
414 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
415 | {"name", s_ignore, 0}, | |
caa32fe5 | 416 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 417 | {"noformat", s_ignore, 0}, |
041ff4dd | 418 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
419 | {"nopage", listing_nopage, 0}, |
420 | {"octa", cons, 16}, | |
421 | {"offset", s_struct, 0}, | |
422 | {"org", s_org, 0}, | |
423 | {"p2align", s_align_ptwo, 0}, | |
424 | {"p2alignw", s_align_ptwo, -2}, | |
425 | {"p2alignl", s_align_ptwo, -4}, | |
426 | {"page", listing_eject, 0}, | |
427 | {"plen", listing_psize, 0}, | |
428 | {"print", s_print, 0}, | |
041ff4dd | 429 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
430 | {"purgem", s_purgem, 0}, |
431 | {"quad", cons, 8}, | |
05e9452c | 432 | {"reloc", s_reloc, 0}, |
252b5132 RH |
433 | {"rep", s_rept, 0}, |
434 | {"rept", s_rept, 0}, | |
435 | {"rva", s_rva, 4}, | |
041ff4dd NC |
436 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
437 | /* scl */ | |
438 | /* sect */ | |
252b5132 RH |
439 | {"set", s_set, 0}, |
440 | {"short", cons, 2}, | |
441 | {"single", float_cons, 'f'}, | |
041ff4dd | 442 | /* size */ |
252b5132 RH |
443 | {"space", s_space, 0}, |
444 | {"skip", s_space, 0}, | |
445 | {"sleb128", s_leb128, 1}, | |
446 | {"spc", s_ignore, 0}, | |
447 | {"stabd", s_stab, 'd'}, | |
448 | {"stabn", s_stab, 'n'}, | |
449 | {"stabs", s_stab, 's'}, | |
38a57ae7 NC |
450 | {"string", stringer, 8+1}, |
451 | {"string8", stringer, 8+1}, | |
452 | {"string16", stringer, 16+1}, | |
453 | {"string32", stringer, 32+1}, | |
454 | {"string64", stringer, 64+1}, | |
252b5132 | 455 | {"struct", s_struct, 0}, |
041ff4dd | 456 | /* tag */ |
252b5132 RH |
457 | {"text", s_text, 0}, |
458 | ||
459 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
460 | won't be able to use it for a while -- probably a year or more. | |
461 | But once this has been released, check with gcc maintainers | |
462 | before deleting it or even changing the spelling. */ | |
463 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
464 | /* If we're folding case -- done for some targets, not necessarily | |
465 | all -- the above string in an input file will be converted to | |
466 | this one. Match it either way... */ | |
467 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
468 | ||
041ff4dd | 469 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 470 | {"ttl", listing_title, 0}, |
041ff4dd | 471 | /* type */ |
252b5132 | 472 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
473 | /* use */ |
474 | /* val */ | |
252b5132 RH |
475 | {"xcom", s_comm, 0}, |
476 | {"xdef", s_globl, 0}, | |
477 | {"xref", s_ignore, 0}, | |
478 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 479 | {"warning", s_errwarn, 0}, |
06e77878 | 480 | {"weakref", s_weakref, 0}, |
252b5132 RH |
481 | {"word", cons, 2}, |
482 | {"zero", s_space, 0}, | |
041ff4dd | 483 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
484 | }; |
485 | ||
87c245cc BE |
486 | static offsetT |
487 | get_absolute_expr (expressionS *exp) | |
488 | { | |
9497f5ac | 489 | expression_and_evaluate (exp); |
87c245cc BE |
490 | if (exp->X_op != O_constant) |
491 | { | |
492 | if (exp->X_op != O_absent) | |
493 | as_bad (_("bad or irreducible absolute expression")); | |
494 | exp->X_add_number = 0; | |
495 | } | |
496 | return exp->X_add_number; | |
497 | } | |
498 | ||
499 | offsetT | |
500 | get_absolute_expression (void) | |
501 | { | |
502 | expressionS exp; | |
503 | ||
504 | return get_absolute_expr (&exp); | |
505 | } | |
506 | ||
252b5132 RH |
507 | static int pop_override_ok = 0; |
508 | static const char *pop_table_name; | |
509 | ||
510 | void | |
39e6acbd | 511 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
512 | { |
513 | const char *errtxt; | |
514 | const pseudo_typeS *pop; | |
515 | for (pop = table; pop->poc_name; pop++) | |
516 | { | |
517 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
518 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
519 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
520 | errtxt); | |
521 | } | |
522 | } | |
523 | ||
524 | #ifndef md_pop_insert | |
525 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
526 | #endif | |
527 | ||
528 | #ifndef obj_pop_insert | |
529 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
530 | #endif | |
531 | ||
54cfded0 AM |
532 | #ifndef cfi_pop_insert |
533 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
534 | #endif | |
535 | ||
041ff4dd | 536 | static void |
39e6acbd | 537 | pobegin (void) |
252b5132 RH |
538 | { |
539 | po_hash = hash_new (); | |
540 | ||
041ff4dd | 541 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
542 | pop_table_name = "md"; |
543 | md_pop_insert (); | |
544 | ||
041ff4dd | 545 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
546 | pop_table_name = "obj"; |
547 | pop_override_ok = 1; | |
548 | obj_pop_insert (); | |
549 | ||
041ff4dd | 550 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
551 | pop_table_name = "standard"; |
552 | pop_insert (potable); | |
d6415f6c | 553 | |
d58a1929 | 554 | /* Now CFI ones. */ |
54cfded0 AM |
555 | pop_table_name = "cfi"; |
556 | pop_override_ok = 1; | |
557 | cfi_pop_insert (); | |
252b5132 RH |
558 | } |
559 | \f | |
e74211b6 | 560 | #define HANDLE_CONDITIONAL_ASSEMBLY(num_read) \ |
252b5132 RH |
561 | if (ignore_input ()) \ |
562 | { \ | |
e74211b6 JB |
563 | char *eol = find_end_of_line (input_line_pointer - (num_read), \ |
564 | flag_m68k_mri); \ | |
40a4d956 JB |
565 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
566 | && eol >= buffer_limit) \ | |
567 | ? buffer_limit \ | |
568 | : eol + 1; \ | |
252b5132 RH |
569 | continue; \ |
570 | } | |
571 | ||
252b5132 RH |
572 | /* This function is used when scrubbing the characters between #APP |
573 | and #NO_APP. */ | |
574 | ||
575 | static char *scrub_string; | |
576 | static char *scrub_string_end; | |
577 | ||
39a45edc AM |
578 | static size_t |
579 | scrub_from_string (char *buf, size_t buflen) | |
252b5132 | 580 | { |
39a45edc | 581 | size_t copy; |
2b47531b ILT |
582 | |
583 | copy = scrub_string_end - scrub_string; | |
584 | if (copy > buflen) | |
585 | copy = buflen; | |
586 | memcpy (buf, scrub_string, copy); | |
587 | scrub_string += copy; | |
588 | return copy; | |
252b5132 RH |
589 | } |
590 | ||
5e75c3ab JB |
591 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
592 | static int | |
593 | try_macro (char term, const char *line) | |
594 | { | |
595 | sb out; | |
596 | const char *err; | |
597 | macro_entry *macro; | |
598 | ||
599 | if (check_macro (line, &out, &err, ¯o)) | |
600 | { | |
601 | if (err != NULL) | |
602 | as_bad ("%s", err); | |
603 | *input_line_pointer++ = term; | |
604 | input_scrub_include_sb (&out, | |
605 | input_line_pointer, 1); | |
606 | sb_kill (&out); | |
607 | buffer_limit = | |
608 | input_scrub_next_buffer (&input_line_pointer); | |
609 | #ifdef md_macro_info | |
610 | md_macro_info (macro); | |
611 | #endif | |
612 | return 1; | |
613 | } | |
614 | return 0; | |
615 | } | |
616 | ||
fa94de6b RM |
617 | #ifdef HANDLE_BUNDLE |
618 | /* Start a new instruction bundle. Returns the rs_align_code frag that | |
619 | will be used to align the new bundle. */ | |
620 | static fragS * | |
621 | start_bundle (void) | |
622 | { | |
623 | fragS *frag = frag_now; | |
624 | ||
625 | frag_align_code (0, 0); | |
626 | ||
627 | while (frag->fr_type != rs_align_code) | |
628 | frag = frag->fr_next; | |
629 | ||
630 | gas_assert (frag != frag_now); | |
631 | ||
632 | return frag; | |
633 | } | |
634 | ||
635 | /* Calculate the maximum size after relaxation of the region starting | |
636 | at the given frag and extending through frag_now (which is unfinished). */ | |
637 | static unsigned int | |
638 | pending_bundle_size (fragS *frag) | |
639 | { | |
640 | unsigned int offset = frag->fr_fix; | |
641 | unsigned int size = 0; | |
642 | ||
643 | gas_assert (frag != frag_now); | |
644 | gas_assert (frag->fr_type == rs_align_code); | |
645 | ||
646 | while (frag != frag_now) | |
647 | { | |
648 | /* This should only happen in what will later become an error case. */ | |
649 | if (frag == NULL) | |
650 | return 0; | |
651 | ||
652 | size += frag->fr_fix; | |
653 | if (frag->fr_type == rs_machine_dependent) | |
654 | size += md_frag_max_var (frag); | |
655 | ||
656 | frag = frag->fr_next; | |
657 | } | |
658 | ||
659 | gas_assert (frag == frag_now); | |
660 | size += frag_now_fix (); | |
661 | if (frag->fr_type == rs_machine_dependent) | |
662 | size += md_frag_max_var (frag); | |
663 | ||
664 | gas_assert (size >= offset); | |
665 | ||
666 | return size - offset; | |
667 | } | |
668 | ||
669 | /* Finish off the frag created to ensure bundle alignment. */ | |
670 | static void | |
671 | finish_bundle (fragS *frag, unsigned int size) | |
672 | { | |
673 | gas_assert (bundle_align_p2 > 0); | |
674 | gas_assert (frag->fr_type == rs_align_code); | |
675 | ||
676 | if (size > 1) | |
677 | { | |
678 | /* If there is more than a single byte, then we need to set up the | |
679 | alignment frag. Otherwise we leave it at its initial state from | |
680 | calling frag_align_code (0, 0), so that it does nothing. */ | |
681 | frag->fr_offset = bundle_align_p2; | |
682 | frag->fr_subtype = size - 1; | |
683 | } | |
684 | ||
685 | /* We do this every time rather than just in s_bundle_align_mode | |
686 | so that we catch any affected section without needing hooks all | |
687 | over for all paths that do section changes. It's cheap enough. */ | |
688 | record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER); | |
689 | } | |
690 | ||
691 | /* Assemble one instruction. This takes care of the bundle features | |
692 | around calling md_assemble. */ | |
693 | static void | |
694 | assemble_one (char *line) | |
695 | { | |
8d3eaee6 | 696 | fragS *insn_start_frag = NULL; |
fa94de6b RM |
697 | |
698 | if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now) | |
699 | { | |
700 | as_bad (_("cannot change section or subsection inside .bundle_lock")); | |
701 | /* Clearing this serves as a marker that we have already complained. */ | |
702 | bundle_lock_frchain = NULL; | |
703 | } | |
704 | ||
705 | if (bundle_lock_frchain == NULL && bundle_align_p2 > 0) | |
706 | insn_start_frag = start_bundle (); | |
707 | ||
708 | md_assemble (line); | |
709 | ||
710 | if (bundle_lock_frchain != NULL) | |
711 | { | |
712 | /* Make sure this hasn't pushed the locked sequence | |
713 | past the bundle size. */ | |
714 | unsigned int bundle_size = pending_bundle_size (bundle_lock_frag); | |
715 | if (bundle_size > (1U << bundle_align_p2)) | |
716 | as_bad (_("\ | |
717 | .bundle_lock sequence at %u bytes but .bundle_align_mode limit is %u bytes"), | |
718 | bundle_size, 1U << bundle_align_p2); | |
719 | } | |
720 | else if (bundle_align_p2 > 0) | |
721 | { | |
722 | unsigned int insn_size = pending_bundle_size (insn_start_frag); | |
723 | ||
724 | if (insn_size > (1U << bundle_align_p2)) | |
725 | as_bad (_("\ | |
726 | single instruction is %u bytes long but .bundle_align_mode limit is %u"), | |
727 | (unsigned int) insn_size, 1U << bundle_align_p2); | |
728 | ||
729 | finish_bundle (insn_start_frag, insn_size); | |
730 | } | |
731 | } | |
732 | ||
733 | #else /* !HANDLE_BUNDLE */ | |
734 | ||
735 | # define assemble_one(line) md_assemble(line) | |
736 | ||
737 | #endif /* HANDLE_BUNDLE */ | |
738 | ||
041ff4dd NC |
739 | /* We read the file, putting things into a web that represents what we |
740 | have been reading. */ | |
741 | void | |
39e6acbd | 742 | read_a_source_file (char *name) |
252b5132 | 743 | { |
d02603dc NC |
744 | char nul_char; |
745 | char next_char; | |
91d6fa6a NC |
746 | char *s; /* String of symbol, '\0' appended. */ |
747 | int temp; | |
252b5132 RH |
748 | pseudo_typeS *pop; |
749 | ||
4c400d5e AM |
750 | #ifdef WARN_COMMENTS |
751 | found_comment = 0; | |
752 | #endif | |
753 | ||
252b5132 RH |
754 | buffer = input_scrub_new_file (name); |
755 | ||
756 | listing_file (name); | |
757 | listing_newline (NULL); | |
758 | register_dependency (name); | |
759 | ||
760 | /* Generate debugging information before we've read anything in to denote | |
761 | this file as the "main" source file and not a subordinate one | |
762 | (e.g. N_SO vs N_SOL in stabs). */ | |
763 | generate_file_debug (); | |
764 | ||
765 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 766 | { /* We have another line to parse. */ |
5e75c3ab JB |
767 | #ifndef NO_LISTING |
768 | /* In order to avoid listing macro expansion lines with labels | |
769 | multiple times, keep track of which line was last issued. */ | |
770 | static char *last_eol; | |
771 | ||
772 | last_eol = NULL; | |
773 | #endif | |
252b5132 RH |
774 | while (input_line_pointer < buffer_limit) |
775 | { | |
f19df8f7 | 776 | bfd_boolean was_new_line; |
041ff4dd | 777 | /* We have more of this buffer to parse. */ |
252b5132 | 778 | |
041ff4dd NC |
779 | /* We now have input_line_pointer->1st char of next line. |
780 | If input_line_pointer [-1] == '\n' then we just | |
781 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
782 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
783 | if (was_new_line) | |
252b5132 | 784 | { |
4a826962 | 785 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
786 | #ifdef md_start_line_hook |
787 | md_start_line_hook (); | |
788 | #endif | |
252b5132 RH |
789 | if (input_line_pointer[-1] == '\n') |
790 | bump_line_counters (); | |
f19df8f7 | 791 | } |
252b5132 | 792 | |
f19df8f7 AM |
793 | #ifndef NO_LISTING |
794 | /* If listing is on, and we are expanding a macro, then give | |
795 | the listing code the contents of the expanded line. */ | |
796 | if (listing) | |
797 | { | |
798 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
799 | { | |
800 | /* Find the end of the current expanded macro line. */ | |
801 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
802 | ||
803 | if (s != last_eol) | |
804 | { | |
805 | char *copy; | |
806 | int len; | |
807 | ||
808 | last_eol = s; | |
809 | /* Copy it for safe keeping. Also give an indication of | |
810 | how much macro nesting is involved at this point. */ | |
811 | len = s - input_line_pointer; | |
812 | copy = (char *) xmalloc (len + macro_nest + 2); | |
813 | memset (copy, '>', macro_nest); | |
814 | copy[macro_nest] = ' '; | |
815 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
816 | copy[macro_nest + 1 + len] = '\0'; | |
817 | ||
818 | /* Install the line with the listing facility. */ | |
819 | listing_newline (copy); | |
820 | } | |
821 | } | |
822 | else | |
823 | listing_newline (NULL); | |
824 | } | |
825 | #endif | |
826 | if (was_new_line) | |
827 | { | |
252b5132 RH |
828 | line_label = NULL; |
829 | ||
abd63a32 | 830 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 | 831 | { |
d02603dc | 832 | next_char = * input_line_pointer; |
252b5132 RH |
833 | /* Text at the start of a line must be a label, we |
834 | run down and stick a colon in. */ | |
d02603dc | 835 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 836 | { |
d02603dc | 837 | char *line_start; |
252b5132 RH |
838 | int mri_line_macro; |
839 | ||
e74211b6 | 840 | HANDLE_CONDITIONAL_ASSEMBLY (0); |
252b5132 | 841 | |
d02603dc NC |
842 | nul_char = get_symbol_name (& line_start); |
843 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
252b5132 RH |
844 | |
845 | /* In MRI mode, the EQU and MACRO pseudoops must | |
846 | be handled specially. */ | |
847 | mri_line_macro = 0; | |
848 | if (flag_m68k_mri) | |
849 | { | |
850 | char *rest = input_line_pointer + 1; | |
851 | ||
852 | if (*rest == ':') | |
853 | ++rest; | |
854 | if (*rest == ' ' || *rest == '\t') | |
855 | ++rest; | |
856 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
857 | || strncasecmp (rest, "SET", 3) == 0) | |
858 | && (rest[3] == ' ' || rest[3] == '\t')) | |
859 | { | |
860 | input_line_pointer = rest + 3; | |
861 | equals (line_start, | |
862 | strncasecmp (rest, "SET", 3) == 0); | |
863 | continue; | |
864 | } | |
865 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
866 | && (rest[5] == ' ' | |
867 | || rest[5] == '\t' | |
868 | || is_end_of_line[(unsigned char) rest[5]])) | |
869 | mri_line_macro = 1; | |
870 | } | |
871 | ||
872 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
873 | pseudo-op specially: we don't want to put the |
874 | symbol in the symbol table. */ | |
041ff4dd | 875 | if (!mri_line_macro |
a25c045a | 876 | #ifdef TC_START_LABEL_WITHOUT_COLON |
d02603dc NC |
877 | && TC_START_LABEL_WITHOUT_COLON (next_char, |
878 | input_line_pointer) | |
a25c045a | 879 | #endif |
ef99799a | 880 | ) |
252b5132 RH |
881 | line_label = colon (line_start); |
882 | else | |
883 | line_label = symbol_create (line_start, | |
884 | absolute_section, | |
885 | (valueT) 0, | |
886 | &zero_address_frag); | |
887 | ||
d02603dc NC |
888 | next_char = restore_line_pointer (nul_char); |
889 | if (next_char == ':') | |
252b5132 RH |
890 | input_line_pointer++; |
891 | } | |
892 | } | |
893 | } | |
894 | ||
47eebc20 | 895 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
896 | We expect a well-formed assembler statement. |
897 | A "symbol-name:" is a statement. | |
f0e652b4 | 898 | |
041ff4dd NC |
899 | Depending on what compiler is used, the order of these tests |
900 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
901 | Each test is independent of all other tests at the (top) |
902 | level. */ | |
903 | do | |
d02603dc NC |
904 | nul_char = next_char = *input_line_pointer++; |
905 | while (next_char == '\t' || next_char == ' ' || next_char == '\f'); | |
252b5132 | 906 | |
041ff4dd NC |
907 | /* C is the 1st significant character. |
908 | Input_line_pointer points after that character. */ | |
d02603dc | 909 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 910 | { |
d02603dc NC |
911 | char *rest; |
912 | ||
041ff4dd | 913 | /* Want user-defined label or pseudo/opcode. */ |
e74211b6 | 914 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 915 | |
d02603dc NC |
916 | --input_line_pointer; |
917 | nul_char = get_symbol_name (& s); /* name's delimiter. */ | |
918 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
919 | rest = input_line_pointer + (nul_char == '"' ? 2 : 1); | |
041ff4dd | 920 | |
d02603dc NC |
921 | /* NEXT_CHAR is character after symbol. |
922 | The end of symbol in the input line is now '\0'. | |
d6415f6c AM |
923 | S points to the beginning of the symbol. |
924 | [In case of pseudo-op, s->'.'.] | |
d02603dc NC |
925 | Input_line_pointer->'\0' where NUL_CHAR was. */ |
926 | if (TC_START_LABEL (next_char, s, input_line_pointer)) | |
252b5132 RH |
927 | { |
928 | if (flag_m68k_mri) | |
929 | { | |
252b5132 | 930 | /* In MRI mode, \tsym: set 0 is permitted. */ |
252b5132 RH |
931 | if (*rest == ':') |
932 | ++rest; | |
f0e652b4 | 933 | |
252b5132 RH |
934 | if (*rest == ' ' || *rest == '\t') |
935 | ++rest; | |
f0e652b4 | 936 | |
252b5132 RH |
937 | if ((strncasecmp (rest, "EQU", 3) == 0 |
938 | || strncasecmp (rest, "SET", 3) == 0) | |
939 | && (rest[3] == ' ' || rest[3] == '\t')) | |
940 | { | |
941 | input_line_pointer = rest + 3; | |
942 | equals (s, 1); | |
943 | continue; | |
944 | } | |
945 | } | |
946 | ||
041ff4dd | 947 | line_label = colon (s); /* User-defined label. */ |
d02603dc NC |
948 | restore_line_pointer (nul_char); |
949 | ++ input_line_pointer; | |
a645d1eb L |
950 | #ifdef tc_check_label |
951 | tc_check_label (line_label); | |
952 | #endif | |
041ff4dd | 953 | /* Input_line_pointer->after ':'. */ |
252b5132 | 954 | SKIP_WHITESPACE (); |
252b5132 | 955 | } |
d02603dc NC |
956 | else if ((next_char == '=' && *rest == '=') |
957 | || ((next_char == ' ' || next_char == '\t') | |
958 | && rest[0] == '=' | |
959 | && rest[1] == '=')) | |
9497f5ac NC |
960 | { |
961 | equals (s, -1); | |
962 | demand_empty_rest_of_line (); | |
963 | } | |
d02603dc NC |
964 | else if ((next_char == '=' |
965 | || ((next_char == ' ' || next_char == '\t') | |
966 | && *rest == '=')) | |
ee3c9814 | 967 | #ifdef TC_EQUAL_IN_INSN |
d02603dc | 968 | && !TC_EQUAL_IN_INSN (next_char, s) |
ee3c9814 | 969 | #endif |
fa94de6b | 970 | ) |
252b5132 RH |
971 | { |
972 | equals (s, 1); | |
973 | demand_empty_rest_of_line (); | |
974 | } | |
975 | else | |
041ff4dd NC |
976 | { |
977 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
978 | pop = NULL; |
979 | ||
a8a3b3b2 | 980 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
981 | { |
982 | char *s2 = s; | |
37d8bb27 NC |
983 | |
984 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
985 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 986 | |
252b5132 RH |
987 | while (*s2) |
988 | { | |
3882b010 | 989 | *s2 = TOLOWER (*s2); |
252b5132 RH |
990 | s2++; |
991 | } | |
992 | } | |
993 | #endif | |
abd63a32 | 994 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 995 | { |
7be1c489 AM |
996 | /* The MRI assembler uses pseudo-ops without |
997 | a period. */ | |
252b5132 RH |
998 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
999 | if (pop != NULL && pop->poc_handler == NULL) | |
1000 | pop = NULL; | |
1001 | } | |
1002 | ||
1003 | if (pop != NULL | |
041ff4dd | 1004 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 1005 | { |
041ff4dd | 1006 | /* PSEUDO - OP. |
f0e652b4 | 1007 | |
d02603dc | 1008 | WARNING: next_char may be end-of-line. |
d6415f6c AM |
1009 | We lookup the pseudo-op table with s+1 because we |
1010 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
1011 | |
1012 | if (pop == NULL) | |
1013 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
1014 | if (pop && !pop->poc_handler) |
1015 | pop = NULL; | |
252b5132 RH |
1016 | |
1017 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
1018 | automatic alignment directive. What a hack |
1019 | this is. */ | |
252b5132 RH |
1020 | if (mri_pending_align |
1021 | && (pop == NULL | |
041ff4dd NC |
1022 | || !((pop->poc_handler == cons |
1023 | && pop->poc_val == 1) | |
1024 | || (pop->poc_handler == s_space | |
1025 | && pop->poc_val == 1) | |
252b5132 | 1026 | #ifdef tc_conditional_pseudoop |
041ff4dd | 1027 | || tc_conditional_pseudoop (pop) |
252b5132 | 1028 | #endif |
041ff4dd NC |
1029 | || pop->poc_handler == s_if |
1030 | || pop->poc_handler == s_ifdef | |
1031 | || pop->poc_handler == s_ifc | |
1032 | || pop->poc_handler == s_ifeqs | |
1033 | || pop->poc_handler == s_else | |
1034 | || pop->poc_handler == s_endif | |
1035 | || pop->poc_handler == s_globl | |
1036 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
1037 | { |
1038 | do_align (1, (char *) NULL, 0, 0); | |
1039 | mri_pending_align = 0; | |
f0e652b4 | 1040 | |
252b5132 RH |
1041 | if (line_label != NULL) |
1042 | { | |
2b47531b | 1043 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1044 | S_SET_VALUE (line_label, frag_now_fix ()); |
1045 | } | |
1046 | } | |
1047 | ||
041ff4dd | 1048 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
1049 | if (pop == NULL) |
1050 | { | |
5e75c3ab JB |
1051 | char *end = input_line_pointer; |
1052 | ||
d02603dc | 1053 | (void) restore_line_pointer (nul_char); |
252b5132 | 1054 | s_ignore (0); |
d02603dc | 1055 | nul_char = next_char = *--input_line_pointer; |
5e75c3ab | 1056 | *input_line_pointer = '\0'; |
d02603dc | 1057 | if (! macro_defined || ! try_macro (next_char, s)) |
5e75c3ab JB |
1058 | { |
1059 | *end = '\0'; | |
1060 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
d02603dc | 1061 | *input_line_pointer++ = nul_char; |
5e75c3ab | 1062 | } |
252b5132 RH |
1063 | continue; |
1064 | } | |
1065 | ||
041ff4dd | 1066 | /* Put it back for error messages etc. */ |
d02603dc | 1067 | next_char = restore_line_pointer (nul_char); |
252b5132 RH |
1068 | /* The following skip of whitespace is compulsory. |
1069 | A well shaped space is sometimes all that separates | |
041ff4dd | 1070 | keyword from operands. */ |
d02603dc | 1071 | if (next_char == ' ' || next_char == '\t') |
252b5132 | 1072 | input_line_pointer++; |
041ff4dd NC |
1073 | |
1074 | /* Input_line is restored. | |
d6415f6c AM |
1075 | Input_line_pointer->1st non-blank char |
1076 | after pseudo-operation. */ | |
252b5132 RH |
1077 | (*pop->poc_handler) (pop->poc_val); |
1078 | ||
1079 | /* If that was .end, just get out now. */ | |
1080 | if (pop->poc_handler == s_end) | |
1081 | goto quit; | |
1082 | } | |
1083 | else | |
1084 | { | |
d02603dc NC |
1085 | /* WARNING: next_char may be end-of-line. */ |
1086 | /* Also: input_line_pointer->`\0` where nul_char was. */ | |
1087 | (void) restore_line_pointer (nul_char); | |
7592cfd7 | 1088 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
d02603dc | 1089 | next_char = nul_char = *input_line_pointer; |
252b5132 RH |
1090 | *input_line_pointer = '\0'; |
1091 | ||
1092 | generate_lineno_debug (); | |
1093 | ||
d02603dc | 1094 | if (macro_defined && try_macro (next_char, s)) |
5e75c3ab | 1095 | continue; |
252b5132 RH |
1096 | |
1097 | if (mri_pending_align) | |
1098 | { | |
1099 | do_align (1, (char *) NULL, 0, 0); | |
1100 | mri_pending_align = 0; | |
1101 | if (line_label != NULL) | |
1102 | { | |
2b47531b | 1103 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1104 | S_SET_VALUE (line_label, frag_now_fix ()); |
1105 | } | |
1106 | } | |
1107 | ||
fa94de6b | 1108 | assemble_one (s); /* Assemble 1 instruction. */ |
252b5132 | 1109 | |
d02603dc | 1110 | *input_line_pointer++ = nul_char; |
252b5132 RH |
1111 | |
1112 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
1113 | this instruction. */ |
1114 | } | |
1115 | } | |
252b5132 | 1116 | continue; |
041ff4dd | 1117 | } |
252b5132 RH |
1118 | |
1119 | /* Empty statement? */ | |
d02603dc | 1120 | if (is_end_of_line[(unsigned char) next_char]) |
252b5132 RH |
1121 | continue; |
1122 | ||
d02603dc | 1123 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (next_char)) |
252b5132 | 1124 | { |
041ff4dd | 1125 | /* local label ("4:") */ |
252b5132 RH |
1126 | char *backup = input_line_pointer; |
1127 | ||
e74211b6 | 1128 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1129 | |
d02603dc NC |
1130 | temp = next_char - '0'; |
1131 | ||
1132 | if (nul_char == '"') | |
1133 | ++ input_line_pointer; | |
252b5132 | 1134 | |
041ff4dd | 1135 | /* Read the whole number. */ |
3882b010 | 1136 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
1137 | { |
1138 | temp = (temp * 10) + *input_line_pointer - '0'; | |
1139 | ++input_line_pointer; | |
041ff4dd | 1140 | } |
252b5132 RH |
1141 | |
1142 | if (LOCAL_LABELS_DOLLAR | |
1143 | && *input_line_pointer == '$' | |
1144 | && *(input_line_pointer + 1) == ':') | |
1145 | { | |
1146 | input_line_pointer += 2; | |
1147 | ||
1148 | if (dollar_label_defined (temp)) | |
1149 | { | |
1150 | as_fatal (_("label \"%d$\" redefined"), temp); | |
1151 | } | |
1152 | ||
1153 | define_dollar_label (temp); | |
1154 | colon (dollar_label_name (temp, 0)); | |
1155 | continue; | |
1156 | } | |
1157 | ||
1158 | if (LOCAL_LABELS_FB | |
1159 | && *input_line_pointer++ == ':') | |
1160 | { | |
1161 | fb_label_instance_inc (temp); | |
1162 | colon (fb_label_name (temp, 0)); | |
1163 | continue; | |
1164 | } | |
1165 | ||
1166 | input_line_pointer = backup; | |
d02603dc | 1167 | } |
252b5132 | 1168 | |
d02603dc | 1169 | if (next_char && strchr (line_comment_chars, next_char)) |
041ff4dd | 1170 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1171 | sb sbuf; |
252b5132 RH |
1172 | char *ends; |
1173 | char *new_buf; | |
1174 | char *new_tmp; | |
1175 | unsigned int new_length; | |
1176 | char *tmp_buf = 0; | |
1177 | ||
252b5132 RH |
1178 | s = input_line_pointer; |
1179 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1180 | { |
1181 | /* We ignore it. */ | |
1182 | ignore_rest_of_line (); | |
1183 | continue; | |
1184 | } | |
1185 | bump_line_counters (); | |
252b5132 RH |
1186 | s += 4; |
1187 | ||
1188 | ends = strstr (s, "#NO_APP\n"); | |
1189 | ||
1190 | if (!ends) | |
1191 | { | |
1192 | unsigned int tmp_len; | |
1193 | unsigned int num; | |
1194 | ||
1195 | /* The end of the #APP wasn't in this buffer. We | |
1196 | keep reading in buffers until we find the #NO_APP | |
1197 | that goes with this #APP There is one. The specs | |
47eebc20 | 1198 | guarantee it... */ |
252b5132 | 1199 | tmp_len = buffer_limit - s; |
1e9cc1c2 | 1200 | tmp_buf = (char *) xmalloc (tmp_len + 1); |
252b5132 RH |
1201 | memcpy (tmp_buf, s, tmp_len); |
1202 | do | |
1203 | { | |
1204 | new_tmp = input_scrub_next_buffer (&buffer); | |
1205 | if (!new_tmp) | |
1206 | break; | |
1207 | else | |
1208 | buffer_limit = new_tmp; | |
1209 | input_line_pointer = buffer; | |
1210 | ends = strstr (buffer, "#NO_APP\n"); | |
1211 | if (ends) | |
1212 | num = ends - buffer; | |
1213 | else | |
1214 | num = buffer_limit - buffer; | |
1215 | ||
1e9cc1c2 | 1216 | tmp_buf = (char *) xrealloc (tmp_buf, tmp_len + num); |
252b5132 RH |
1217 | memcpy (tmp_buf + tmp_len, buffer, num); |
1218 | tmp_len += num; | |
1219 | } | |
1220 | while (!ends); | |
1221 | ||
1222 | input_line_pointer = ends ? ends + 8 : NULL; | |
1223 | ||
1224 | s = tmp_buf; | |
1225 | ends = s + tmp_len; | |
1226 | ||
1227 | } | |
1228 | else | |
1229 | { | |
1230 | input_line_pointer = ends + 8; | |
1231 | } | |
1232 | ||
1233 | scrub_string = s; | |
1234 | scrub_string_end = ends; | |
1235 | ||
1236 | new_length = ends - s; | |
1237 | new_buf = (char *) xmalloc (new_length); | |
1238 | new_tmp = new_buf; | |
1239 | for (;;) | |
1240 | { | |
39a45edc AM |
1241 | size_t space; |
1242 | size_t size; | |
252b5132 RH |
1243 | |
1244 | space = (new_buf + new_length) - new_tmp; | |
1245 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1246 | ||
1247 | if (size < space) | |
1248 | { | |
64e55042 | 1249 | new_tmp[size] = 0; |
252b5132 RH |
1250 | break; |
1251 | } | |
1252 | ||
1e9cc1c2 | 1253 | new_buf = (char *) xrealloc (new_buf, new_length + 100); |
252b5132 RH |
1254 | new_tmp = new_buf + new_length; |
1255 | new_length += 100; | |
1256 | } | |
1257 | ||
1258 | if (tmp_buf) | |
1259 | free (tmp_buf); | |
f0e652b4 | 1260 | |
64e55042 HPN |
1261 | /* We've "scrubbed" input to the preferred format. In the |
1262 | process we may have consumed the whole of the remaining | |
1263 | file (and included files). We handle this formatted | |
1264 | input similar to that of macro expansion, letting | |
1265 | actual macro expansion (possibly nested) and other | |
1266 | input expansion work. Beware that in messages, line | |
1267 | numbers and possibly file names will be incorrect. */ | |
d2ae702c L |
1268 | new_length = strlen (new_buf); |
1269 | sb_build (&sbuf, new_length); | |
1270 | sb_add_buffer (&sbuf, new_buf, new_length); | |
64e55042 HPN |
1271 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); |
1272 | sb_kill (&sbuf); | |
1273 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1274 | free (new_buf); | |
252b5132 RH |
1275 | continue; |
1276 | } | |
1277 | ||
e74211b6 | 1278 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 RH |
1279 | |
1280 | #ifdef tc_unrecognized_line | |
d02603dc | 1281 | if (tc_unrecognized_line (next_char)) |
252b5132 RH |
1282 | continue; |
1283 | #endif | |
0e389e77 | 1284 | input_line_pointer--; |
601e61cd | 1285 | /* Report unknown char as error. */ |
c95b35a9 | 1286 | demand_empty_rest_of_line (); |
041ff4dd | 1287 | } |
041ff4dd | 1288 | } |
252b5132 RH |
1289 | |
1290 | quit: | |
04648e65 | 1291 | symbol_set_value_now (&dot_symbol); |
252b5132 | 1292 | |
fa94de6b RM |
1293 | #ifdef HANDLE_BUNDLE |
1294 | if (bundle_lock_frag != NULL) | |
1295 | { | |
1296 | as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line, | |
1297 | _(".bundle_lock with no matching .bundle_unlock")); | |
1298 | bundle_lock_frag = NULL; | |
1299 | bundle_lock_frchain = NULL; | |
d416e51d | 1300 | bundle_lock_depth = 0; |
fa94de6b RM |
1301 | } |
1302 | #endif | |
1303 | ||
252b5132 | 1304 | #ifdef md_cleanup |
041ff4dd | 1305 | md_cleanup (); |
252b5132 | 1306 | #endif |
041ff4dd NC |
1307 | /* Close the input file. */ |
1308 | input_scrub_close (); | |
4c400d5e AM |
1309 | #ifdef WARN_COMMENTS |
1310 | { | |
1311 | if (warn_comment && found_comment) | |
1312 | as_warn_where (found_comment_file, found_comment, | |
1313 | "first comment found here"); | |
1314 | } | |
1315 | #endif | |
252b5132 RH |
1316 | } |
1317 | ||
e5604d79 | 1318 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
956a6ba3 | 1319 | Take the sign of the number from SIGN rather than X_add_number. */ |
e5604d79 RS |
1320 | |
1321 | static void | |
956a6ba3 | 1322 | convert_to_bignum (expressionS *exp, int sign) |
e5604d79 RS |
1323 | { |
1324 | valueT value; | |
1325 | unsigned int i; | |
1326 | ||
1327 | value = exp->X_add_number; | |
1328 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1329 | { | |
1330 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1331 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1332 | } | |
1333 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1334 | the sign of the original value. */ | |
956a6ba3 JB |
1335 | if ((exp->X_add_number < 0) == !sign) |
1336 | generic_bignum[i++] = sign ? LITTLENUM_MASK : 0; | |
e5604d79 RS |
1337 | exp->X_op = O_big; |
1338 | exp->X_add_number = i; | |
1339 | } | |
1340 | ||
252b5132 RH |
1341 | /* For most MRI pseudo-ops, the line actually ends at the first |
1342 | nonquoted space. This function looks for that point, stuffs a null | |
1343 | in, and sets *STOPCP to the character that used to be there, and | |
1344 | returns the location. | |
1345 | ||
1346 | Until I hear otherwise, I am going to assume that this is only true | |
1347 | for the m68k MRI assembler. */ | |
1348 | ||
1349 | char * | |
39e6acbd | 1350 | mri_comment_field (char *stopcp) |
252b5132 | 1351 | { |
252b5132 | 1352 | char *s; |
041ff4dd | 1353 | #ifdef TC_M68K |
252b5132 RH |
1354 | int inquote = 0; |
1355 | ||
1356 | know (flag_m68k_mri); | |
1357 | ||
1358 | for (s = input_line_pointer; | |
041ff4dd | 1359 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1360 | || inquote); |
1361 | s++) | |
1362 | { | |
1363 | if (*s == '\'') | |
041ff4dd | 1364 | inquote = !inquote; |
252b5132 | 1365 | } |
252b5132 | 1366 | #else |
041ff4dd NC |
1367 | for (s = input_line_pointer; |
1368 | !is_end_of_line[(unsigned char) *s]; | |
1369 | s++) | |
252b5132 | 1370 | ; |
041ff4dd | 1371 | #endif |
252b5132 RH |
1372 | *stopcp = *s; |
1373 | *s = '\0'; | |
f0e652b4 | 1374 | |
252b5132 | 1375 | return s; |
252b5132 RH |
1376 | } |
1377 | ||
1378 | /* Skip to the end of an MRI comment field. */ | |
1379 | ||
1380 | void | |
39e6acbd | 1381 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1382 | { |
1383 | know (flag_mri); | |
1384 | ||
1385 | input_line_pointer = stop; | |
1386 | *stop = stopc; | |
041ff4dd | 1387 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1388 | ++input_line_pointer; |
1389 | } | |
1390 | ||
041ff4dd | 1391 | void |
39e6acbd | 1392 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1393 | { |
1394 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1395 | } | |
1396 | ||
1397 | /* Guts of .align directive. N is the power of two to which to align. | |
1398 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1399 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1400 | the maximum number of characters to skip when doing the alignment, | |
1401 | or 0 if there is no maximum. */ | |
1402 | ||
041ff4dd | 1403 | static void |
39e6acbd | 1404 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1405 | { |
ebeb9253 AM |
1406 | if (now_seg == absolute_section) |
1407 | { | |
1408 | if (fill != NULL) | |
1409 | while (len-- > 0) | |
1410 | if (*fill++ != '\0') | |
1411 | { | |
1412 | as_warn (_("ignoring fill value in absolute section")); | |
1413 | break; | |
1414 | } | |
1415 | fill = NULL; | |
1416 | len = 0; | |
1417 | } | |
1418 | ||
b8861cfb NS |
1419 | #ifdef md_flush_pending_output |
1420 | md_flush_pending_output (); | |
1421 | #endif | |
252b5132 RH |
1422 | #ifdef md_do_align |
1423 | md_do_align (n, fill, len, max, just_record_alignment); | |
1424 | #endif | |
1425 | ||
041ff4dd | 1426 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1427 | if (n != 0 && !need_pass_2) |
1428 | { | |
0a9ef439 RH |
1429 | if (fill == NULL) |
1430 | { | |
1431 | if (subseg_text_p (now_seg)) | |
1432 | frag_align_code (n, max); | |
1433 | else | |
1434 | frag_align (n, 0, max); | |
1435 | } | |
1436 | else if (len <= 1) | |
252b5132 RH |
1437 | frag_align (n, *fill, max); |
1438 | else | |
1439 | frag_align_pattern (n, fill, len, max); | |
1440 | } | |
1441 | ||
1442 | #ifdef md_do_align | |
a6bd2a4f | 1443 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1444 | #endif |
1445 | ||
bea9907b | 1446 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1447 | } |
1448 | ||
1449 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1450 | (in bytes). A negative ARG is the negative of the length of the | |
1451 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1452 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1453 | #ifndef TC_ALIGN_LIMIT |
1454 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1455 | #endif | |
9ebd302d | 1456 | |
252b5132 | 1457 | static void |
39e6acbd | 1458 | s_align (int arg, int bytes_p) |
252b5132 | 1459 | { |
11ec4ba9 | 1460 | unsigned int align_limit = TC_ALIGN_LIMIT; |
9ebd302d | 1461 | unsigned int align; |
252b5132 | 1462 | char *stop = NULL; |
fb25138b | 1463 | char stopc = 0; |
252b5132 RH |
1464 | offsetT fill = 0; |
1465 | int max; | |
1466 | int fill_p; | |
1467 | ||
1468 | if (flag_mri) | |
1469 | stop = mri_comment_field (&stopc); | |
1470 | ||
1471 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1472 | { | |
1473 | if (arg < 0) | |
1474 | align = 0; | |
1475 | else | |
041ff4dd | 1476 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1477 | } |
1478 | else | |
1479 | { | |
1480 | align = get_absolute_expression (); | |
1481 | SKIP_WHITESPACE (); | |
db2ed2e0 AM |
1482 | |
1483 | #ifdef TC_ALIGN_ZERO_IS_DEFAULT | |
1484 | if (arg > 0 && align == 0) | |
1485 | align = arg; | |
1486 | #endif | |
252b5132 RH |
1487 | } |
1488 | ||
1489 | if (bytes_p) | |
1490 | { | |
1491 | /* Convert to a power of 2. */ | |
1492 | if (align != 0) | |
1493 | { | |
1494 | unsigned int i; | |
1495 | ||
1496 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1497 | ; | |
1498 | if (align != 1) | |
0e389e77 | 1499 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1500 | |
252b5132 RH |
1501 | align = i; |
1502 | } | |
1503 | } | |
1504 | ||
b617dc20 | 1505 | if (align > align_limit) |
252b5132 | 1506 | { |
b617dc20 | 1507 | align = align_limit; |
0e389e77 | 1508 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1509 | } |
1510 | ||
1511 | if (*input_line_pointer != ',') | |
1512 | { | |
1513 | fill_p = 0; | |
1514 | max = 0; | |
1515 | } | |
1516 | else | |
1517 | { | |
1518 | ++input_line_pointer; | |
1519 | if (*input_line_pointer == ',') | |
1520 | fill_p = 0; | |
1521 | else | |
1522 | { | |
1523 | fill = get_absolute_expression (); | |
1524 | SKIP_WHITESPACE (); | |
1525 | fill_p = 1; | |
1526 | } | |
1527 | ||
1528 | if (*input_line_pointer != ',') | |
1529 | max = 0; | |
1530 | else | |
1531 | { | |
1532 | ++input_line_pointer; | |
1533 | max = get_absolute_expression (); | |
1534 | } | |
1535 | } | |
1536 | ||
041ff4dd | 1537 | if (!fill_p) |
252b5132 RH |
1538 | { |
1539 | if (arg < 0) | |
1540 | as_warn (_("expected fill pattern missing")); | |
1541 | do_align (align, (char *) NULL, 0, max); | |
1542 | } | |
1543 | else | |
1544 | { | |
1545 | int fill_len; | |
1546 | ||
1547 | if (arg >= 0) | |
1548 | fill_len = 1; | |
1549 | else | |
041ff4dd | 1550 | fill_len = -arg; |
252b5132 RH |
1551 | if (fill_len <= 1) |
1552 | { | |
1553 | char fill_char; | |
1554 | ||
1555 | fill_char = fill; | |
1556 | do_align (align, &fill_char, fill_len, max); | |
1557 | } | |
1558 | else | |
1559 | { | |
1560 | char ab[16]; | |
1561 | ||
1562 | if ((size_t) fill_len > sizeof ab) | |
1563 | abort (); | |
1564 | md_number_to_chars (ab, fill, fill_len); | |
1565 | do_align (align, ab, fill_len, max); | |
1566 | } | |
1567 | } | |
1568 | ||
1569 | demand_empty_rest_of_line (); | |
1570 | ||
1571 | if (flag_mri) | |
1572 | mri_comment_end (stop, stopc); | |
1573 | } | |
1574 | ||
1575 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1576 | align to a 4 byte boundary. */ | |
1577 | ||
041ff4dd | 1578 | void |
39e6acbd | 1579 | s_align_bytes (int arg) |
252b5132 RH |
1580 | { |
1581 | s_align (arg, 1); | |
1582 | } | |
1583 | ||
1584 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1585 | to a 2**4 boundary. */ | |
1586 | ||
041ff4dd | 1587 | void |
39e6acbd | 1588 | s_align_ptwo (int arg) |
252b5132 RH |
1589 | { |
1590 | s_align (arg, 0); | |
1591 | } | |
1592 | ||
caa32fe5 NC |
1593 | /* Switch in and out of alternate macro mode. */ |
1594 | ||
b38ead21 | 1595 | static void |
caa32fe5 NC |
1596 | s_altmacro (int on) |
1597 | { | |
1598 | demand_empty_rest_of_line (); | |
1599 | macro_set_alternate (on); | |
1600 | } | |
1601 | ||
7bfd842d NC |
1602 | /* Read a symbol name from input_line_pointer. |
1603 | ||
1604 | Stores the symbol name in a buffer and returns a pointer to this buffer. | |
1605 | The buffer is xalloc'ed. It is the caller's responsibility to free | |
1606 | this buffer. | |
1607 | ||
1608 | The name is not left in the i_l_p buffer as it may need processing | |
1609 | to handle escape characters. | |
1610 | ||
1611 | Advances i_l_p to the next non-whitespace character. | |
1612 | ||
1613 | If a symbol name could not be read, the routine issues an error | |
1614 | messages, skips to the end of the line and returns NULL. */ | |
1615 | ||
69602580 | 1616 | char * |
7bfd842d NC |
1617 | read_symbol_name (void) |
1618 | { | |
1619 | char * name; | |
1620 | char * start; | |
1621 | char c; | |
1622 | ||
1623 | c = *input_line_pointer++; | |
1624 | ||
1625 | if (c == '"') | |
1626 | { | |
1627 | #define SYM_NAME_CHUNK_LEN 128 | |
1628 | ptrdiff_t len = SYM_NAME_CHUNK_LEN; | |
1629 | char * name_end; | |
1630 | unsigned int C; | |
1631 | ||
1632 | start = name = xmalloc (len + 1); | |
1633 | ||
1634 | name_end = name + SYM_NAME_CHUNK_LEN; | |
1635 | ||
1636 | while (is_a_char (C = next_char_of_string ())) | |
1637 | { | |
1638 | if (name >= name_end) | |
1639 | { | |
1640 | ptrdiff_t sofar; | |
1641 | ||
1642 | sofar = name - start; | |
1643 | len += SYM_NAME_CHUNK_LEN; | |
1644 | start = xrealloc (start, len + 1); | |
1645 | name_end = start + len; | |
1646 | name = start + sofar; | |
1647 | } | |
34bca508 | 1648 | |
7bfd842d NC |
1649 | *name++ = (char) C; |
1650 | } | |
1651 | *name = 0; | |
1652 | ||
1653 | /* Since quoted symbol names can contain non-ASCII characters, | |
1654 | check the string and warn if it cannot be recognised by the | |
1655 | current character set. */ | |
1656 | if (mbstowcs (NULL, name, len) == (size_t) -1) | |
1657 | as_warn (_("symbol name not recognised in the current locale")); | |
1658 | } | |
1659 | else if (is_name_beginner (c) || c == '\001') | |
1660 | { | |
1661 | ptrdiff_t len; | |
1662 | ||
1663 | name = input_line_pointer - 1; | |
1664 | ||
1665 | /* We accept \001 in a name in case this is | |
1666 | being called with a constructed string. */ | |
1667 | while (is_part_of_name (c = *input_line_pointer++) | |
1668 | || c == '\001') | |
1669 | ; | |
1670 | ||
1671 | len = (input_line_pointer - name) - 1; | |
1672 | start = xmalloc (len + 1); | |
1673 | ||
1674 | memcpy (start, name, len); | |
1675 | start[len] = 0; | |
1676 | ||
1677 | /* Skip a name ender char if one is present. */ | |
1678 | if (! is_name_ender (c)) | |
1679 | --input_line_pointer; | |
1680 | } | |
1681 | else | |
1682 | name = start = NULL; | |
1683 | ||
1684 | if (name == start) | |
1685 | { | |
1686 | as_bad (_("expected symbol name")); | |
1687 | ignore_rest_of_line (); | |
1688 | return NULL; | |
1689 | } | |
34bca508 | 1690 | |
7bfd842d NC |
1691 | SKIP_WHITESPACE (); |
1692 | ||
1693 | return start; | |
1694 | } | |
1695 | ||
1696 | ||
e13bab5a AM |
1697 | symbolS * |
1698 | s_comm_internal (int param, | |
1699 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1700 | { |
e13bab5a | 1701 | char *name; |
e13bab5a AM |
1702 | offsetT temp, size; |
1703 | symbolS *symbolP = NULL; | |
252b5132 | 1704 | char *stop = NULL; |
fb25138b | 1705 | char stopc = 0; |
e13bab5a | 1706 | expressionS exp; |
252b5132 RH |
1707 | |
1708 | if (flag_mri) | |
1709 | stop = mri_comment_field (&stopc); | |
1710 | ||
7bfd842d NC |
1711 | if ((name = read_symbol_name ()) == NULL) |
1712 | goto out; | |
f0e652b4 | 1713 | |
e13bab5a AM |
1714 | /* Accept an optional comma after the name. The comma used to be |
1715 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1716 | if (*input_line_pointer == ',') | |
1717 | input_line_pointer++; | |
1718 | ||
e13bab5a AM |
1719 | temp = get_absolute_expr (&exp); |
1720 | size = temp; | |
65879393 | 1721 | size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1722 | if (exp.X_op == O_absent) |
252b5132 | 1723 | { |
e13bab5a | 1724 | as_bad (_("missing size expression")); |
252b5132 | 1725 | ignore_rest_of_line (); |
e13bab5a | 1726 | goto out; |
252b5132 | 1727 | } |
e13bab5a | 1728 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1729 | { |
e13bab5a | 1730 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1731 | ignore_rest_of_line (); |
e13bab5a | 1732 | goto out; |
252b5132 | 1733 | } |
f0e652b4 | 1734 | |
252b5132 | 1735 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1736 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1737 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1738 | { |
92757bc9 JB |
1739 | if (!S_IS_VOLATILE (symbolP)) |
1740 | { | |
1741 | symbolP = NULL; | |
1742 | as_bad (_("symbol `%s' is already defined"), name); | |
92757bc9 JB |
1743 | ignore_rest_of_line (); |
1744 | goto out; | |
1745 | } | |
89cdfe57 | 1746 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1747 | S_SET_SEGMENT (symbolP, undefined_section); |
1748 | S_SET_VALUE (symbolP, 0); | |
1749 | symbol_set_frag (symbolP, &zero_address_frag); | |
1750 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1751 | } |
f0e652b4 | 1752 | |
e13bab5a AM |
1753 | size = S_GET_VALUE (symbolP); |
1754 | if (size == 0) | |
1755 | size = temp; | |
1756 | else if (size != temp) | |
1757 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1758 | name, (long) size, (long) temp); | |
1759 | ||
e13bab5a AM |
1760 | if (comm_parse_extra != NULL) |
1761 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1762 | else |
1763 | { | |
e13bab5a | 1764 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1765 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1766 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
e13bab5a | 1767 | } |
252b5132 RH |
1768 | |
1769 | demand_empty_rest_of_line (); | |
e13bab5a | 1770 | out: |
252b5132 RH |
1771 | if (flag_mri) |
1772 | mri_comment_end (stop, stopc); | |
7bfd842d NC |
1773 | if (name != NULL) |
1774 | free (name); | |
e13bab5a AM |
1775 | return symbolP; |
1776 | } | |
1777 | ||
1778 | void | |
1779 | s_comm (int ignore) | |
1780 | { | |
1781 | s_comm_internal (ignore, NULL); | |
1782 | } | |
252b5132 RH |
1783 | |
1784 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1785 | symbol with the appropriate name. We make s_space do the right | |
1786 | thing by increasing the size. */ | |
1787 | ||
1788 | void | |
39e6acbd | 1789 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1790 | { |
1791 | char *name; | |
1792 | char c; | |
1793 | char *alc = NULL; | |
1794 | symbolS *sym; | |
1795 | offsetT align; | |
1796 | char *stop = NULL; | |
fb25138b | 1797 | char stopc = 0; |
252b5132 | 1798 | |
041ff4dd | 1799 | if (!flag_mri) |
252b5132 RH |
1800 | { |
1801 | s_comm (0); | |
1802 | return; | |
1803 | } | |
1804 | ||
1805 | stop = mri_comment_field (&stopc); | |
1806 | ||
1807 | SKIP_WHITESPACE (); | |
1808 | ||
1809 | name = input_line_pointer; | |
3882b010 | 1810 | if (!ISDIGIT (*name)) |
d02603dc | 1811 | c = get_symbol_name (& name); |
252b5132 RH |
1812 | else |
1813 | { | |
1814 | do | |
1815 | { | |
1816 | ++input_line_pointer; | |
1817 | } | |
3882b010 | 1818 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1819 | |
252b5132 RH |
1820 | c = *input_line_pointer; |
1821 | *input_line_pointer = '\0'; | |
1822 | ||
1823 | if (line_label != NULL) | |
1824 | { | |
1825 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1826 | + (input_line_pointer - name) | |
1827 | + 1); | |
1828 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1829 | name = alc; | |
1830 | } | |
1831 | } | |
1832 | ||
1833 | sym = symbol_find_or_make (name); | |
d02603dc | 1834 | c = restore_line_pointer (c); |
252b5132 RH |
1835 | if (alc != NULL) |
1836 | free (alc); | |
1837 | ||
1838 | if (*input_line_pointer != ',') | |
1839 | align = 0; | |
1840 | else | |
1841 | { | |
1842 | ++input_line_pointer; | |
1843 | align = get_absolute_expression (); | |
1844 | } | |
1845 | ||
041ff4dd | 1846 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1847 | { |
0e389e77 | 1848 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1849 | ignore_rest_of_line (); |
1850 | mri_comment_end (stop, stopc); | |
1851 | return; | |
1852 | } | |
1853 | ||
1854 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1855 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1856 | mri_common_symbol = sym; |
1857 | ||
1858 | #ifdef S_SET_ALIGN | |
1859 | if (align != 0) | |
1860 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1861 | #else |
1862 | (void) align; | |
252b5132 RH |
1863 | #endif |
1864 | ||
1865 | if (line_label != NULL) | |
1866 | { | |
2b47531b ILT |
1867 | expressionS exp; |
1868 | exp.X_op = O_symbol; | |
1869 | exp.X_add_symbol = sym; | |
1870 | exp.X_add_number = 0; | |
1871 | symbol_set_value_expression (line_label, &exp); | |
1872 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1873 | S_SET_SEGMENT (line_label, expr_section); |
1874 | } | |
1875 | ||
1876 | /* FIXME: We just ignore the small argument, which distinguishes | |
1877 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1878 | ||
1879 | /* Ignore the type and hptype. */ | |
1880 | if (*input_line_pointer == ',') | |
1881 | input_line_pointer += 2; | |
1882 | if (*input_line_pointer == ',') | |
1883 | input_line_pointer += 2; | |
1884 | ||
1885 | demand_empty_rest_of_line (); | |
1886 | ||
1887 | mri_comment_end (stop, stopc); | |
1888 | } | |
1889 | ||
1890 | void | |
39e6acbd | 1891 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1892 | { |
1893 | segT section; | |
3d540e93 | 1894 | int temp; |
252b5132 RH |
1895 | |
1896 | temp = get_absolute_expression (); | |
1897 | if (flag_readonly_data_in_text) | |
1898 | { | |
1899 | section = text_section; | |
1900 | temp += 1000; | |
1901 | } | |
1902 | else | |
1903 | section = data_section; | |
1904 | ||
1905 | subseg_set (section, (subsegT) temp); | |
1906 | ||
252b5132 RH |
1907 | demand_empty_rest_of_line (); |
1908 | } | |
1909 | ||
1910 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1911 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1912 | file name. This default definition may be overridden by the object | |
1913 | or CPU specific pseudo-ops. This function is also the default | |
1914 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1915 | .file. */ | |
1916 | ||
ecb4347a | 1917 | void |
f17c130b | 1918 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1919 | { |
1920 | #ifdef LISTING | |
1921 | if (listing) | |
1922 | listing_source_file (file); | |
1923 | #endif | |
1924 | register_dependency (file); | |
1925 | #ifdef obj_app_file | |
c04f5787 | 1926 | obj_app_file (file, appfile); |
ecb4347a DJ |
1927 | #endif |
1928 | } | |
1929 | ||
041ff4dd | 1930 | void |
39e6acbd | 1931 | s_app_file (int appfile) |
252b5132 | 1932 | { |
3d540e93 | 1933 | char *s; |
252b5132 RH |
1934 | int length; |
1935 | ||
041ff4dd | 1936 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1937 | if ((s = demand_copy_string (&length)) != 0) |
1938 | { | |
252b5132 | 1939 | int may_omit |
93e914b2 | 1940 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
1941 | |
1942 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1943 | backquote. */ |
252b5132 RH |
1944 | if (flag_m68k_mri |
1945 | && *input_line_pointer == '\'' | |
1946 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1947 | ++input_line_pointer; | |
1948 | ||
1949 | demand_empty_rest_of_line (); | |
041ff4dd | 1950 | if (!may_omit) |
c04f5787 | 1951 | s_app_file_string (s, appfile); |
252b5132 RH |
1952 | } |
1953 | } | |
1954 | ||
e9fc6c21 AO |
1955 | static int |
1956 | get_linefile_number (int *flag) | |
1957 | { | |
1958 | SKIP_WHITESPACE (); | |
1959 | ||
1960 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
1961 | return 0; | |
1962 | ||
1963 | *flag = get_absolute_expression (); | |
1964 | ||
1965 | return 1; | |
1966 | } | |
1967 | ||
252b5132 RH |
1968 | /* Handle the .appline pseudo-op. This is automatically generated by |
1969 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1970 | default definition may be overridden by the object or CPU specific | |
1971 | pseudo-ops. */ | |
1972 | ||
1973 | void | |
93e914b2 | 1974 | s_app_line (int appline) |
252b5132 | 1975 | { |
e9fc6c21 | 1976 | char *file = NULL; |
252b5132 RH |
1977 | int l; |
1978 | ||
1979 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
1980 | if (appline) |
1981 | l = get_absolute_expression (); | |
1982 | else if (!get_linefile_number (&l)) | |
1983 | { | |
1984 | ignore_rest_of_line (); | |
1985 | return; | |
1986 | } | |
1987 | ||
1988 | l--; | |
47837f8e NC |
1989 | |
1990 | if (l < -1) | |
252b5132 | 1991 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
1992 | Besides, it's silly. GCC however will generate a line number of |
1993 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
1994 | ||
fa94de6b | 1995 | # 0 "<built-in>" |
47837f8e NC |
1996 | |
1997 | We do not want to barf on this, especially since such files are used | |
1998 | in the GCC and GDB testsuites. So we check for negative line numbers | |
1999 | rather than non-positive line numbers. */ | |
0e389e77 | 2000 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 2001 | l + 1); |
252b5132 RH |
2002 | else |
2003 | { | |
93e914b2 | 2004 | int flags = 0; |
93e914b2 AO |
2005 | int length = 0; |
2006 | ||
2007 | if (!appline) | |
2008 | { | |
e9fc6c21 AO |
2009 | SKIP_WHITESPACE (); |
2010 | ||
2011 | if (*input_line_pointer == '"') | |
2012 | file = demand_copy_string (&length); | |
93e914b2 AO |
2013 | |
2014 | if (file) | |
2015 | { | |
2016 | int this_flag; | |
2017 | ||
e9fc6c21 | 2018 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
2019 | switch (this_flag) |
2020 | { | |
2021 | /* From GCC's cpp documentation: | |
2022 | 1: start of a new file. | |
2023 | 2: returning to a file after having included | |
fa94de6b | 2024 | another file. |
93e914b2 AO |
2025 | 3: following text comes from a system header file. |
2026 | 4: following text should be treated as extern "C". | |
2027 | ||
2028 | 4 is nonsensical for the assembler; 3, we don't | |
2029 | care about, so we ignore it just in case a | |
2030 | system header file is included while | |
2031 | preprocessing assembly. So 1 and 2 are all we | |
2032 | care about, and they are mutually incompatible. | |
2033 | new_logical_line_flags() demands this. */ | |
2034 | case 1: | |
2035 | case 2: | |
2036 | if (flags && flags != (1 << this_flag)) | |
2037 | as_warn (_("incompatible flag %i in line directive"), | |
2038 | this_flag); | |
2039 | else | |
2040 | flags |= 1 << this_flag; | |
2041 | break; | |
2042 | ||
2043 | case 3: | |
2044 | case 4: | |
2045 | /* We ignore these. */ | |
2046 | break; | |
2047 | ||
2048 | default: | |
2049 | as_warn (_("unsupported flag %i in line directive"), | |
2050 | this_flag); | |
2051 | break; | |
2052 | } | |
e9fc6c21 AO |
2053 | |
2054 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
2055 | file = 0; | |
93e914b2 AO |
2056 | } |
2057 | } | |
2058 | ||
e9fc6c21 AO |
2059 | if (appline || file) |
2060 | { | |
2061 | new_logical_line_flags (file, l, flags); | |
252b5132 | 2062 | #ifdef LISTING |
e9fc6c21 AO |
2063 | if (listing) |
2064 | listing_source_line (l); | |
252b5132 | 2065 | #endif |
e9fc6c21 | 2066 | } |
252b5132 | 2067 | } |
e9fc6c21 AO |
2068 | if (appline || file) |
2069 | demand_empty_rest_of_line (); | |
2070 | else | |
2071 | ignore_rest_of_line (); | |
252b5132 RH |
2072 | } |
2073 | ||
2074 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
2075 | read_a_source_file. */ | |
2076 | ||
2077 | void | |
39e6acbd | 2078 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2079 | { |
2080 | if (flag_mri) | |
2081 | { | |
2082 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 2083 | but we don't support that. */ |
252b5132 | 2084 | SKIP_WHITESPACE (); |
041ff4dd | 2085 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2086 | && *input_line_pointer != '*' |
2087 | && *input_line_pointer != '!') | |
2088 | as_warn (_("start address not supported")); | |
2089 | } | |
2090 | } | |
2091 | ||
2092 | /* Handle the .err pseudo-op. */ | |
2093 | ||
2094 | void | |
39e6acbd | 2095 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2096 | { |
2097 | as_bad (_(".err encountered")); | |
2098 | demand_empty_rest_of_line (); | |
d190d046 HPN |
2099 | } |
2100 | ||
2101 | /* Handle the .error and .warning pseudo-ops. */ | |
2102 | ||
2103 | void | |
2104 | s_errwarn (int err) | |
2105 | { | |
2106 | int len; | |
2107 | /* The purpose for the conditional assignment is not to | |
2108 | internationalize the directive itself, but that we need a | |
2109 | self-contained message, one that can be passed like the | |
2110 | demand_copy_C_string return value, and with no assumption on the | |
2111 | location of the name of the directive within the message. */ | |
2112 | char *msg | |
2113 | = (err ? _(".error directive invoked in source file") | |
2114 | : _(".warning directive invoked in source file")); | |
2115 | ||
2116 | if (!is_it_end_of_statement ()) | |
2117 | { | |
2118 | if (*input_line_pointer != '\"') | |
2119 | { | |
2120 | as_bad (_("%s argument must be a string"), | |
2121 | err ? ".error" : ".warning"); | |
40a4d956 | 2122 | ignore_rest_of_line (); |
d190d046 HPN |
2123 | return; |
2124 | } | |
2125 | ||
2126 | msg = demand_copy_C_string (&len); | |
2127 | if (msg == NULL) | |
2128 | return; | |
2129 | } | |
2130 | ||
2131 | if (err) | |
2132 | as_bad ("%s", msg); | |
2133 | else | |
2134 | as_warn ("%s", msg); | |
2135 | demand_empty_rest_of_line (); | |
252b5132 RH |
2136 | } |
2137 | ||
2138 | /* Handle the MRI fail pseudo-op. */ | |
2139 | ||
2140 | void | |
39e6acbd | 2141 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2142 | { |
2143 | offsetT temp; | |
2144 | char *stop = NULL; | |
fb25138b | 2145 | char stopc = 0; |
252b5132 RH |
2146 | |
2147 | if (flag_mri) | |
2148 | stop = mri_comment_field (&stopc); | |
2149 | ||
2150 | temp = get_absolute_expression (); | |
2151 | if (temp >= 500) | |
2152 | as_warn (_(".fail %ld encountered"), (long) temp); | |
2153 | else | |
2154 | as_bad (_(".fail %ld encountered"), (long) temp); | |
2155 | ||
2156 | demand_empty_rest_of_line (); | |
2157 | ||
2158 | if (flag_mri) | |
2159 | mri_comment_end (stop, stopc); | |
2160 | } | |
2161 | ||
041ff4dd | 2162 | void |
39e6acbd | 2163 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2164 | { |
2165 | expressionS rep_exp; | |
2166 | long size = 1; | |
3d540e93 | 2167 | long fill = 0; |
252b5132 RH |
2168 | char *p; |
2169 | ||
2170 | #ifdef md_flush_pending_output | |
2171 | md_flush_pending_output (); | |
2172 | #endif | |
2173 | ||
cc3f603a JM |
2174 | #ifdef md_cons_align |
2175 | md_cons_align (1); | |
2176 | #endif | |
2177 | ||
252b5132 RH |
2178 | get_known_segmented_expression (&rep_exp); |
2179 | if (*input_line_pointer == ',') | |
2180 | { | |
2181 | input_line_pointer++; | |
2182 | size = get_absolute_expression (); | |
2183 | if (*input_line_pointer == ',') | |
2184 | { | |
2185 | input_line_pointer++; | |
2186 | fill = get_absolute_expression (); | |
2187 | } | |
2188 | } | |
2189 | ||
2190 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
2191 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
2192 | if (size > BSD_FILL_SIZE_CROCK_8) | |
2193 | { | |
0e389e77 | 2194 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
2195 | size = BSD_FILL_SIZE_CROCK_8; |
2196 | } | |
2197 | if (size < 0) | |
2198 | { | |
0e389e77 | 2199 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
2200 | size = 0; |
2201 | } | |
2202 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
2203 | { | |
2204 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 2205 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
2206 | size = 0; |
2207 | } | |
2208 | ||
2209 | if (size && !need_pass_2) | |
2210 | { | |
2211 | if (rep_exp.X_op == O_constant) | |
2212 | { | |
2213 | p = frag_var (rs_fill, (int) size, (int) size, | |
2214 | (relax_substateT) 0, (symbolS *) 0, | |
2215 | (offsetT) rep_exp.X_add_number, | |
2216 | (char *) 0); | |
2217 | } | |
2218 | else | |
2219 | { | |
2220 | /* We don't have a constant repeat count, so we can't use | |
2221 | rs_fill. We can get the same results out of rs_space, | |
2222 | but its argument is in bytes, so we must multiply the | |
2223 | repeat count by size. */ | |
2224 | ||
2225 | symbolS *rep_sym; | |
2226 | rep_sym = make_expr_symbol (&rep_exp); | |
2227 | if (size != 1) | |
2228 | { | |
2229 | expressionS size_exp; | |
2230 | size_exp.X_op = O_constant; | |
2231 | size_exp.X_add_number = size; | |
2232 | ||
2233 | rep_exp.X_op = O_multiply; | |
2234 | rep_exp.X_add_symbol = rep_sym; | |
2235 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
2236 | rep_exp.X_add_number = 0; | |
2237 | rep_sym = make_expr_symbol (&rep_exp); | |
2238 | } | |
2239 | ||
2240 | p = frag_var (rs_space, (int) size, (int) size, | |
2241 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
2242 | } | |
f0e652b4 | 2243 | |
252b5132 | 2244 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2245 | |
252b5132 | 2246 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2247 | flavoured AS. The following bizarre behaviour is to be |
2248 | compatible with above. I guess they tried to take up to 8 | |
2249 | bytes from a 4-byte expression and they forgot to sign | |
2250 | extend. */ | |
252b5132 RH |
2251 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2252 | md_number_to_chars (p, (valueT) fill, | |
2253 | (size > BSD_FILL_SIZE_CROCK_4 | |
2254 | ? BSD_FILL_SIZE_CROCK_4 | |
2255 | : (int) size)); | |
2256 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2257 | but emits no error message because it seems a legal thing to do. |
2258 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2259 | compiler. */ |
252b5132 RH |
2260 | } |
2261 | demand_empty_rest_of_line (); | |
2262 | } | |
2263 | ||
041ff4dd | 2264 | void |
39e6acbd | 2265 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2266 | { |
2267 | char *name; | |
2268 | int c; | |
2269 | symbolS *symbolP; | |
2270 | char *stop = NULL; | |
fb25138b | 2271 | char stopc = 0; |
252b5132 RH |
2272 | |
2273 | if (flag_mri) | |
2274 | stop = mri_comment_field (&stopc); | |
2275 | ||
2276 | do | |
2277 | { | |
7bfd842d NC |
2278 | if ((name = read_symbol_name ()) == NULL) |
2279 | return; | |
2280 | ||
252b5132 | 2281 | symbolP = symbol_find_or_make (name); |
58b5739a RH |
2282 | S_SET_EXTERNAL (symbolP); |
2283 | ||
252b5132 | 2284 | SKIP_WHITESPACE (); |
58b5739a | 2285 | c = *input_line_pointer; |
252b5132 RH |
2286 | if (c == ',') |
2287 | { | |
2288 | input_line_pointer++; | |
2289 | SKIP_WHITESPACE (); | |
0e389e77 | 2290 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2291 | c = '\n'; |
2292 | } | |
7bfd842d NC |
2293 | |
2294 | free (name); | |
252b5132 RH |
2295 | } |
2296 | while (c == ','); | |
2297 | ||
2298 | demand_empty_rest_of_line (); | |
2299 | ||
2300 | if (flag_mri) | |
2301 | mri_comment_end (stop, stopc); | |
2302 | } | |
2303 | ||
2304 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2305 | ||
2306 | void | |
39e6acbd | 2307 | s_irp (int irpc) |
252b5132 | 2308 | { |
40a4d956 | 2309 | char *file, *eol; |
252b5132 RH |
2310 | unsigned int line; |
2311 | sb s; | |
2312 | const char *err; | |
2313 | sb out; | |
2314 | ||
2315 | as_where (&file, &line); | |
2316 | ||
40a4d956 | 2317 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2318 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2319 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2320 | input_line_pointer = eol; | |
252b5132 RH |
2321 | |
2322 | sb_new (&out); | |
2323 | ||
7592cfd7 | 2324 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2325 | if (err != NULL) |
2326 | as_bad_where (file, line, "%s", err); | |
2327 | ||
2328 | sb_kill (&s); | |
2329 | ||
9f10757c | 2330 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2331 | sb_kill (&out); |
2332 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2333 | } | |
2334 | ||
2335 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2336 | the section to only be linked once. However, this is not supported | |
2337 | by most object file formats. This takes an optional argument, | |
2338 | which is what to do about duplicates. */ | |
2339 | ||
2340 | void | |
39e6acbd | 2341 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2342 | { |
2343 | enum linkonce_type type; | |
2344 | ||
2345 | SKIP_WHITESPACE (); | |
2346 | ||
2347 | type = LINKONCE_DISCARD; | |
2348 | ||
041ff4dd | 2349 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2350 | { |
2351 | char *s; | |
2352 | char c; | |
2353 | ||
d02603dc | 2354 | c = get_symbol_name (& s); |
252b5132 RH |
2355 | if (strcasecmp (s, "discard") == 0) |
2356 | type = LINKONCE_DISCARD; | |
2357 | else if (strcasecmp (s, "one_only") == 0) | |
2358 | type = LINKONCE_ONE_ONLY; | |
2359 | else if (strcasecmp (s, "same_size") == 0) | |
2360 | type = LINKONCE_SAME_SIZE; | |
2361 | else if (strcasecmp (s, "same_contents") == 0) | |
2362 | type = LINKONCE_SAME_CONTENTS; | |
2363 | else | |
2364 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2365 | ||
d02603dc | 2366 | (void) restore_line_pointer (c); |
252b5132 RH |
2367 | } |
2368 | ||
2369 | #ifdef obj_handle_link_once | |
2370 | obj_handle_link_once (type); | |
2371 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2372 | { |
2373 | flagword flags; | |
2374 | ||
2375 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2376 | as_warn (_(".linkonce is not supported for this object file format")); | |
2377 | ||
2378 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2379 | flags |= SEC_LINK_ONCE; | |
2380 | switch (type) | |
2381 | { | |
2382 | default: | |
2383 | abort (); | |
2384 | case LINKONCE_DISCARD: | |
2385 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2386 | break; | |
2387 | case LINKONCE_ONE_ONLY: | |
2388 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2389 | break; | |
2390 | case LINKONCE_SAME_SIZE: | |
2391 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2392 | break; | |
2393 | case LINKONCE_SAME_CONTENTS: | |
2394 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2395 | break; | |
2396 | } | |
041ff4dd | 2397 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2398 | as_bad (_("bfd_set_section_flags: %s"), |
2399 | bfd_errmsg (bfd_get_error ())); | |
2400 | } | |
252b5132 RH |
2401 | #endif /* ! defined (obj_handle_link_once) */ |
2402 | ||
2403 | demand_empty_rest_of_line (); | |
2404 | } | |
2405 | ||
e13bab5a AM |
2406 | void |
2407 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2408 | { |
e13bab5a | 2409 | char *pfrag; |
252b5132 RH |
2410 | segT current_seg = now_seg; |
2411 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2412 | segT bss_seg = bss_section; |
2413 | ||
252b5132 RH |
2414 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2415 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2416 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2417 | { | |
2418 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2419 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2420 | { |
2421 | bss_seg = subseg_new (".sbss", 1); | |
2422 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2423 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2424 | as_warn (_("error setting flags for \".sbss\": %s"), |
2425 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2426 | } |
2427 | } | |
2428 | #endif | |
e13bab5a | 2429 | subseg_set (bss_seg, 1); |
8684e216 | 2430 | |
e13bab5a | 2431 | if (align) |
041ff4dd | 2432 | { |
e13bab5a AM |
2433 | record_alignment (bss_seg, align); |
2434 | frag_align (align, 0, 0); | |
041ff4dd | 2435 | } |
252b5132 | 2436 | |
e13bab5a AM |
2437 | /* Detach from old frag. */ |
2438 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2439 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2440 | |
e13bab5a AM |
2441 | symbol_set_frag (symbolP, frag_now); |
2442 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2443 | *pfrag = 0; | |
f0e652b4 | 2444 | |
e13bab5a AM |
2445 | #ifdef S_SET_SIZE |
2446 | S_SET_SIZE (symbolP, size); | |
2447 | #endif | |
2448 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2449 | |
e13bab5a AM |
2450 | #ifdef OBJ_COFF |
2451 | /* The symbol may already have been created with a preceding | |
2452 | ".globl" directive -- be careful not to step on storage class | |
2453 | in that case. Otherwise, set it to static. */ | |
2454 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2455 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2456 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2457 | |
e13bab5a AM |
2458 | subseg_set (current_seg, current_subseg); |
2459 | } | |
f0e652b4 | 2460 | |
e13bab5a AM |
2461 | offsetT |
2462 | parse_align (int align_bytes) | |
2463 | { | |
2464 | expressionS exp; | |
2465 | addressT align; | |
252b5132 | 2466 | |
e13bab5a AM |
2467 | SKIP_WHITESPACE (); |
2468 | if (*input_line_pointer != ',') | |
2469 | { | |
2470 | no_align: | |
2471 | as_bad (_("expected alignment after size")); | |
2472 | ignore_rest_of_line (); | |
2473 | return -1; | |
2474 | } | |
f0e652b4 | 2475 | |
e13bab5a AM |
2476 | input_line_pointer++; |
2477 | SKIP_WHITESPACE (); | |
f0e652b4 | 2478 | |
e13bab5a AM |
2479 | align = get_absolute_expr (&exp); |
2480 | if (exp.X_op == O_absent) | |
2481 | goto no_align; | |
2482 | ||
2483 | if (!exp.X_unsigned) | |
2484 | { | |
2485 | as_warn (_("alignment negative; 0 assumed")); | |
2486 | align = 0; | |
041ff4dd | 2487 | } |
e13bab5a AM |
2488 | |
2489 | if (align_bytes && align != 0) | |
252b5132 | 2490 | { |
e13bab5a AM |
2491 | /* convert to a power of 2 alignment */ |
2492 | unsigned int alignp2 = 0; | |
2493 | while ((align & 1) == 0) | |
2494 | align >>= 1, ++alignp2; | |
2495 | if (align != 1) | |
252b5132 | 2496 | { |
e13bab5a AM |
2497 | as_bad (_("alignment not a power of 2")); |
2498 | ignore_rest_of_line (); | |
2499 | return -1; | |
252b5132 | 2500 | } |
e13bab5a | 2501 | align = alignp2; |
252b5132 | 2502 | } |
e13bab5a AM |
2503 | return align; |
2504 | } | |
252b5132 | 2505 | |
e13bab5a AM |
2506 | /* Called from s_comm_internal after symbol name and size have been |
2507 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2508 | 1 if this was a ".bss" directive which has a 3rd argument | |
2509 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2510 | with alignment in bytes. */ | |
252b5132 | 2511 | |
13c56984 | 2512 | symbolS * |
e13bab5a AM |
2513 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2514 | { | |
2515 | addressT align = 0; | |
252b5132 | 2516 | |
e13bab5a AM |
2517 | if (needs_align) |
2518 | { | |
2519 | align = parse_align (needs_align - 1); | |
2520 | if (align == (addressT) -1) | |
2521 | return NULL; | |
252b5132 RH |
2522 | } |
2523 | else | |
e13bab5a AM |
2524 | /* Assume some objects may require alignment on some systems. */ |
2525 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2526 | |
e13bab5a AM |
2527 | bss_alloc (symbolP, size, align); |
2528 | return symbolP; | |
041ff4dd | 2529 | } |
252b5132 RH |
2530 | |
2531 | void | |
39e6acbd | 2532 | s_lcomm (int needs_align) |
252b5132 | 2533 | { |
e13bab5a | 2534 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2535 | } |
2536 | ||
041ff4dd | 2537 | void |
39e6acbd | 2538 | s_lcomm_bytes (int needs_align) |
252b5132 | 2539 | { |
e13bab5a | 2540 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2541 | } |
2542 | ||
041ff4dd | 2543 | void |
39e6acbd | 2544 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2545 | { |
3d540e93 | 2546 | char *name; |
252b5132 | 2547 | expressionS exp; |
3d540e93 | 2548 | symbolS *symbolP; |
252b5132 | 2549 | |
041ff4dd | 2550 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
7bfd842d NC |
2551 | if ((name = read_symbol_name ()) == NULL) |
2552 | return; | |
f0e652b4 | 2553 | |
252b5132 RH |
2554 | if (*input_line_pointer != ',') |
2555 | { | |
0e389e77 | 2556 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 2557 | goto err_out; |
252b5132 | 2558 | } |
f0e652b4 | 2559 | |
252b5132 | 2560 | input_line_pointer++; |
9497f5ac | 2561 | expression_and_evaluate (&exp); |
f0e652b4 | 2562 | |
252b5132 RH |
2563 | if (exp.X_op != O_constant |
2564 | && exp.X_op != O_register) | |
2565 | { | |
2566 | as_bad (_("bad expression")); | |
7bfd842d | 2567 | goto err_out; |
252b5132 | 2568 | } |
f0e652b4 | 2569 | |
252b5132 RH |
2570 | symbolP = symbol_find_or_make (name); |
2571 | ||
86ebace2 | 2572 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2573 | { |
2574 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2575 | keep the "external" bit. */ |
252b5132 RH |
2576 | S_SET_SEGMENT (symbolP, |
2577 | (exp.X_op == O_constant | |
2578 | ? absolute_section | |
2579 | : reg_section)); | |
2580 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2581 | } | |
2582 | else | |
2583 | { | |
0e389e77 | 2584 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2585 | } |
f0e652b4 | 2586 | |
252b5132 | 2587 | demand_empty_rest_of_line (); |
7bfd842d NC |
2588 | free (name); |
2589 | return; | |
2590 | ||
2591 | err_out: | |
2592 | ignore_rest_of_line (); | |
2593 | free (name); | |
2594 | return; | |
041ff4dd | 2595 | } |
252b5132 | 2596 | |
0822d075 NC |
2597 | /* Read a line into an sb. Returns the character that ended the line |
2598 | or zero if there are no more lines. */ | |
252b5132 RH |
2599 | |
2600 | static int | |
7592cfd7 | 2601 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2602 | { |
40a4d956 | 2603 | char *eol; |
252b5132 RH |
2604 | |
2605 | if (input_line_pointer[-1] == '\n') | |
2606 | bump_line_counters (); | |
2607 | ||
2608 | if (input_line_pointer >= buffer_limit) | |
2609 | { | |
2610 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2611 | if (buffer_limit == 0) | |
2612 | return 0; | |
2613 | } | |
2614 | ||
7592cfd7 | 2615 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2616 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2617 | input_line_pointer = eol; | |
f0e652b4 | 2618 | |
0822d075 NC |
2619 | /* Don't skip multiple end-of-line characters, because that breaks support |
2620 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2621 | characters but isn't. Instead just skip one end of line character and | |
2622 | return the character skipped so that the caller can re-insert it if | |
2623 | necessary. */ | |
40a4d956 | 2624 | return *input_line_pointer++; |
252b5132 RH |
2625 | } |
2626 | ||
39a45edc | 2627 | static size_t |
7592cfd7 NC |
2628 | get_non_macro_line_sb (sb *line) |
2629 | { | |
2630 | return get_line_sb (line, 0); | |
2631 | } | |
2632 | ||
39a45edc | 2633 | static size_t |
7592cfd7 NC |
2634 | get_macro_line_sb (sb *line) |
2635 | { | |
2636 | return get_line_sb (line, 1); | |
2637 | } | |
2638 | ||
fea17916 | 2639 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2640 | |
2641 | void | |
39e6acbd | 2642 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2643 | { |
40a4d956 | 2644 | char *file, *eol; |
252b5132 RH |
2645 | unsigned int line; |
2646 | sb s; | |
252b5132 RH |
2647 | const char *err; |
2648 | const char *name; | |
2649 | ||
2650 | as_where (&file, &line); | |
2651 | ||
40a4d956 | 2652 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2653 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2654 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2655 | input_line_pointer = eol; | |
252b5132 | 2656 | |
252b5132 | 2657 | if (line_label != NULL) |
360e86f1 JB |
2658 | { |
2659 | sb label; | |
d2ae702c | 2660 | size_t len; |
252b5132 | 2661 | |
d2ae702c L |
2662 | name = S_GET_NAME (line_label); |
2663 | len = strlen (name); | |
2664 | sb_build (&label, len); | |
2665 | sb_add_buffer (&label, name, len); | |
7592cfd7 | 2666 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2667 | sb_kill (&label); |
2668 | } | |
2669 | else | |
7592cfd7 | 2670 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2671 | if (err != NULL) |
02ddf156 | 2672 | as_bad_where (file, line, err, name); |
252b5132 RH |
2673 | else |
2674 | { | |
2675 | if (line_label != NULL) | |
2676 | { | |
5e75c3ab | 2677 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2678 | S_SET_VALUE (line_label, 0); |
2b47531b | 2679 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2680 | } |
2681 | ||
abd63a32 | 2682 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2683 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2684 | || (!flag_m68k_mri |
252b5132 RH |
2685 | && *name == '.' |
2686 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2687 | as_warn_where (file, |
2688 | line, | |
2689 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2690 | name); |
2691 | } | |
2692 | ||
2693 | sb_kill (&s); | |
2694 | } | |
2695 | ||
2696 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2697 | expansion. */ | |
2698 | ||
2699 | void | |
39e6acbd | 2700 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2701 | { |
5808f4a6 NC |
2702 | if (macro_nest) |
2703 | { | |
2704 | cond_exit_macro (macro_nest); | |
2705 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2706 | } | |
2707 | else | |
2708 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2709 | } |
2710 | ||
2711 | /* Switch in and out of MRI mode. */ | |
2712 | ||
2713 | void | |
39e6acbd | 2714 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2715 | { |
3d540e93 NC |
2716 | int on; |
2717 | #ifdef MRI_MODE_CHANGE | |
2718 | int old_flag; | |
2719 | #endif | |
252b5132 RH |
2720 | |
2721 | on = get_absolute_expression (); | |
3d540e93 | 2722 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2723 | old_flag = flag_mri; |
3d540e93 | 2724 | #endif |
252b5132 RH |
2725 | if (on != 0) |
2726 | { | |
2727 | flag_mri = 1; | |
2728 | #ifdef TC_M68K | |
2729 | flag_m68k_mri = 1; | |
2730 | #endif | |
2731 | macro_mri_mode (1); | |
2732 | } | |
2733 | else | |
2734 | { | |
2735 | flag_mri = 0; | |
abd63a32 | 2736 | #ifdef TC_M68K |
252b5132 | 2737 | flag_m68k_mri = 0; |
abd63a32 | 2738 | #endif |
252b5132 RH |
2739 | macro_mri_mode (0); |
2740 | } | |
2741 | ||
2742 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2743 | update the operator rankings. */ | |
2744 | expr_set_precedence (); | |
2745 | ||
2746 | #ifdef MRI_MODE_CHANGE | |
2747 | if (on != old_flag) | |
2748 | MRI_MODE_CHANGE (on); | |
2749 | #endif | |
2750 | ||
2751 | demand_empty_rest_of_line (); | |
2752 | } | |
2753 | ||
2754 | /* Handle changing the location counter. */ | |
2755 | ||
2756 | static void | |
39e6acbd | 2757 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 | 2758 | { |
259af69e AM |
2759 | if (segment != now_seg |
2760 | && segment != absolute_section | |
2761 | && segment != expr_section) | |
0e389e77 | 2762 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2763 | |
2764 | if (now_seg == absolute_section) | |
2765 | { | |
2766 | if (fill != 0) | |
2767 | as_warn (_("ignoring fill value in absolute section")); | |
2768 | if (exp->X_op != O_constant) | |
2769 | { | |
2770 | as_bad (_("only constant offsets supported in absolute section")); | |
2771 | exp->X_add_number = 0; | |
2772 | } | |
2773 | abs_section_offset = exp->X_add_number; | |
2774 | } | |
2775 | else | |
2776 | { | |
2777 | char *p; | |
2289f85d AM |
2778 | symbolS *sym = exp->X_add_symbol; |
2779 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2780 | |
2289f85d AM |
2781 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2782 | { | |
2783 | /* Handle complex expressions. */ | |
2784 | sym = make_expr_symbol (exp); | |
2785 | off = 0; | |
2786 | } | |
2787 | ||
2788 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2789 | *p = fill; |
2790 | } | |
2791 | } | |
2792 | ||
041ff4dd | 2793 | void |
39e6acbd | 2794 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2795 | { |
3d540e93 | 2796 | segT segment; |
252b5132 | 2797 | expressionS exp; |
3d540e93 | 2798 | long temp_fill; |
252b5132 RH |
2799 | |
2800 | #ifdef md_flush_pending_output | |
2801 | md_flush_pending_output (); | |
2802 | #endif | |
2803 | ||
2804 | /* The m68k MRI assembler has a different meaning for .org. It | |
2805 | means to create an absolute section at a given address. We can't | |
2806 | support that--use a linker script instead. */ | |
2807 | if (flag_m68k_mri) | |
2808 | { | |
2809 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2810 | ignore_rest_of_line (); | |
2811 | return; | |
2812 | } | |
2813 | ||
2814 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2815 | thing as a sub-segment-relative origin. Any absolute origin is | |
2816 | given a warning, then assumed to be segment-relative. Any | |
2817 | segmented origin expression ("foo+42") had better be in the right | |
2818 | segment or the .org is ignored. | |
2819 | ||
2820 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2821 | we never know sub-segment sizes when we are reading code. BSD | |
2822 | will crash trying to emit negative numbers of filler bytes in | |
2823 | certain .orgs. We don't crash, but see as-write for that code. | |
2824 | ||
2825 | Don't make frag if need_pass_2==1. */ | |
2826 | segment = get_known_segmented_expression (&exp); | |
2827 | if (*input_line_pointer == ',') | |
2828 | { | |
2829 | input_line_pointer++; | |
2830 | temp_fill = get_absolute_expression (); | |
2831 | } | |
2832 | else | |
2833 | temp_fill = 0; | |
2834 | ||
2835 | if (!need_pass_2) | |
2836 | do_org (segment, &exp, temp_fill); | |
2837 | ||
2838 | demand_empty_rest_of_line (); | |
041ff4dd | 2839 | } |
252b5132 RH |
2840 | |
2841 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2842 | called by the obj-format routine which handles section changing | |
2843 | when in MRI mode. It will create a new section, and return it. It | |
2844 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2845 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2846 | |
2847 | void | |
39e6acbd | 2848 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2849 | { |
2850 | #ifdef TC_M68K | |
2851 | ||
2852 | char *name; | |
2853 | char c; | |
2854 | segT seg; | |
2855 | ||
2856 | SKIP_WHITESPACE (); | |
041ff4dd | 2857 | |
252b5132 | 2858 | name = input_line_pointer; |
3882b010 | 2859 | if (!ISDIGIT (*name)) |
d02603dc | 2860 | c = get_symbol_name (& name); |
252b5132 RH |
2861 | else |
2862 | { | |
2863 | do | |
2864 | { | |
2865 | ++input_line_pointer; | |
2866 | } | |
3882b010 | 2867 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2868 | |
252b5132 RH |
2869 | c = *input_line_pointer; |
2870 | *input_line_pointer = '\0'; | |
2871 | } | |
2872 | ||
2873 | name = xstrdup (name); | |
2874 | ||
d02603dc | 2875 | c = restore_line_pointer (c); |
252b5132 RH |
2876 | |
2877 | seg = subseg_new (name, 0); | |
2878 | ||
d02603dc | 2879 | if (c == ',') |
252b5132 RH |
2880 | { |
2881 | int align; | |
2882 | ||
2883 | ++input_line_pointer; | |
2884 | align = get_absolute_expression (); | |
2885 | record_alignment (seg, align); | |
2886 | } | |
2887 | ||
2888 | *type = 'C'; | |
2889 | if (*input_line_pointer == ',') | |
2890 | { | |
2891 | c = *++input_line_pointer; | |
3882b010 | 2892 | c = TOUPPER (c); |
252b5132 RH |
2893 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2894 | *type = c; | |
2895 | else | |
2896 | as_bad (_("unrecognized section type")); | |
2897 | ++input_line_pointer; | |
2898 | ||
252b5132 RH |
2899 | { |
2900 | flagword flags; | |
2901 | ||
2902 | flags = SEC_NO_FLAGS; | |
2903 | if (*type == 'C') | |
2904 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2905 | else if (*type == 'D' || *type == 'M') | |
2906 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2907 | else if (*type == 'R') | |
2908 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2909 | if (flags != SEC_NO_FLAGS) | |
2910 | { | |
041ff4dd | 2911 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2912 | as_warn (_("error setting flags for \"%s\": %s"), |
2913 | bfd_section_name (stdoutput, seg), | |
2914 | bfd_errmsg (bfd_get_error ())); | |
2915 | } | |
2916 | } | |
252b5132 RH |
2917 | } |
2918 | ||
2919 | /* Ignore the HP type. */ | |
2920 | if (*input_line_pointer == ',') | |
2921 | input_line_pointer += 2; | |
2922 | ||
2923 | demand_empty_rest_of_line (); | |
2924 | ||
2925 | #else /* ! TC_M68K */ | |
2926 | #ifdef TC_I960 | |
2927 | ||
2928 | char *name; | |
2929 | char c; | |
2930 | segT seg; | |
2931 | ||
2932 | SKIP_WHITESPACE (); | |
2933 | ||
d02603dc | 2934 | c = get_symbol_name (& name); |
252b5132 RH |
2935 | |
2936 | name = xstrdup (name); | |
2937 | ||
d02603dc | 2938 | c = restore_line_pointer (c); |
252b5132 RH |
2939 | |
2940 | seg = subseg_new (name, 0); | |
2941 | ||
d02603dc | 2942 | if (c != ',') |
252b5132 RH |
2943 | *type = 'C'; |
2944 | else | |
2945 | { | |
2946 | char *sectype; | |
2947 | ||
2948 | ++input_line_pointer; | |
2949 | SKIP_WHITESPACE (); | |
d02603dc | 2950 | c = get_symbol_name (& sectype); |
252b5132 RH |
2951 | if (*sectype == '\0') |
2952 | *type = 'C'; | |
2953 | else if (strcasecmp (sectype, "text") == 0) | |
2954 | *type = 'C'; | |
2955 | else if (strcasecmp (sectype, "data") == 0) | |
2956 | *type = 'D'; | |
2957 | else if (strcasecmp (sectype, "romdata") == 0) | |
2958 | *type = 'R'; | |
2959 | else | |
2960 | as_warn (_("unrecognized section type `%s'"), sectype); | |
d02603dc | 2961 | (void) restore_line_pointer (c); |
252b5132 RH |
2962 | } |
2963 | ||
2964 | if (*input_line_pointer == ',') | |
2965 | { | |
2966 | char *seccmd; | |
2967 | ||
2968 | ++input_line_pointer; | |
2969 | SKIP_WHITESPACE (); | |
d02603dc | 2970 | c = get_symbol_name (& seccmd); |
252b5132 RH |
2971 | if (strcasecmp (seccmd, "absolute") == 0) |
2972 | { | |
2973 | as_bad (_("absolute sections are not supported")); | |
2974 | *input_line_pointer = c; | |
2975 | ignore_rest_of_line (); | |
2976 | return; | |
2977 | } | |
2978 | else if (strcasecmp (seccmd, "align") == 0) | |
2979 | { | |
2980 | int align; | |
2981 | ||
d02603dc | 2982 | (void) restore_line_pointer (c); |
252b5132 RH |
2983 | align = get_absolute_expression (); |
2984 | record_alignment (seg, align); | |
2985 | } | |
2986 | else | |
2987 | { | |
2988 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
d02603dc | 2989 | (void) restore_line_pointer (c); |
252b5132 RH |
2990 | } |
2991 | } | |
2992 | ||
041ff4dd | 2993 | demand_empty_rest_of_line (); |
252b5132 RH |
2994 | |
2995 | #else /* ! TC_I960 */ | |
2996 | /* The MRI assembler seems to use different forms of .sect for | |
2997 | different targets. */ | |
2998 | as_bad ("MRI mode not supported for this target"); | |
2999 | ignore_rest_of_line (); | |
3000 | #endif /* ! TC_I960 */ | |
3001 | #endif /* ! TC_M68K */ | |
3002 | } | |
3003 | ||
3004 | /* Handle the .print pseudo-op. */ | |
3005 | ||
3006 | void | |
39e6acbd | 3007 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3008 | { |
3009 | char *s; | |
3010 | int len; | |
3011 | ||
3012 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
3013 | if (s != NULL) |
3014 | printf ("%s\n", s); | |
252b5132 RH |
3015 | demand_empty_rest_of_line (); |
3016 | } | |
3017 | ||
3018 | /* Handle the .purgem pseudo-op. */ | |
3019 | ||
3020 | void | |
39e6acbd | 3021 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3022 | { |
3023 | if (is_it_end_of_statement ()) | |
3024 | { | |
3025 | demand_empty_rest_of_line (); | |
3026 | return; | |
3027 | } | |
3028 | ||
3029 | do | |
3030 | { | |
3031 | char *name; | |
3032 | char c; | |
3033 | ||
3034 | SKIP_WHITESPACE (); | |
d02603dc | 3035 | c = get_symbol_name (& name); |
252b5132 RH |
3036 | delete_macro (name); |
3037 | *input_line_pointer = c; | |
d02603dc | 3038 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
3039 | } |
3040 | while (*input_line_pointer++ == ','); | |
3041 | ||
3042 | --input_line_pointer; | |
3043 | demand_empty_rest_of_line (); | |
3044 | } | |
3045 | ||
057f53c1 | 3046 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 3047 | |
057f53c1 JB |
3048 | static void |
3049 | s_bad_end (int endr) | |
7f28ab9d | 3050 | { |
cc643b88 | 3051 | as_warn (_(".end%c encountered without preceding %s"), |
057f53c1 JB |
3052 | endr ? 'r' : 'm', |
3053 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
3054 | demand_empty_rest_of_line (); |
3055 | } | |
3056 | ||
3057 | /* Handle the .rept pseudo-op. */ | |
3058 | ||
252b5132 | 3059 | void |
39e6acbd | 3060 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3061 | { |
3062 | int count; | |
252b5132 RH |
3063 | |
3064 | count = get_absolute_expression (); | |
3065 | ||
041ff4dd | 3066 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
3067 | } |
3068 | ||
3069 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 3070 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
3071 | |
3072 | void | |
39e6acbd | 3073 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
3074 | { |
3075 | sb one; | |
3076 | sb many; | |
3077 | ||
252b5132 | 3078 | sb_new (&one); |
7592cfd7 | 3079 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 3080 | { |
6dc19fc4 | 3081 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
3082 | return; |
3083 | } | |
3084 | ||
d2ae702c | 3085 | sb_build (&many, count * one.len); |
252b5132 RH |
3086 | while (count-- > 0) |
3087 | sb_add_sb (&many, &one); | |
3088 | ||
3089 | sb_kill (&one); | |
3090 | ||
9f10757c | 3091 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
3092 | sb_kill (&many); |
3093 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3094 | } | |
3095 | ||
c7927a3c NC |
3096 | /* Like do_repeat except that any text matching EXPANDER in the |
3097 | block is replaced by the itteration count. */ | |
3098 | ||
3099 | void | |
3100 | do_repeat_with_expander (int count, | |
3101 | const char * start, | |
3102 | const char * end, | |
3103 | const char * expander) | |
3104 | { | |
3105 | sb one; | |
3106 | sb many; | |
3107 | ||
3108 | sb_new (&one); | |
3109 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3110 | { | |
3111 | as_bad (_("%s without %s"), start, end); | |
3112 | return; | |
3113 | } | |
3114 | ||
3115 | sb_new (&many); | |
3116 | ||
3117 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3118 | { | |
3119 | while (count -- > 0) | |
3120 | { | |
3121 | int len; | |
3122 | char * sub; | |
3123 | sb processed; | |
3124 | ||
d2ae702c | 3125 | sb_build (& processed, one.len); |
c7927a3c NC |
3126 | sb_add_sb (& processed, & one); |
3127 | sub = strstr (processed.ptr, expander); | |
3128 | len = sprintf (sub, "%d", count); | |
3129 | gas_assert (len < 8); | |
3130 | strcpy (sub + len, sub + 8); | |
3131 | processed.len -= (8 - len); | |
3132 | sb_add_sb (& many, & processed); | |
3133 | sb_kill (& processed); | |
3134 | } | |
3135 | } | |
3136 | else | |
3137 | while (count-- > 0) | |
3138 | sb_add_sb (&many, &one); | |
3139 | ||
3140 | sb_kill (&one); | |
3141 | ||
3142 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3143 | sb_kill (&many); | |
3144 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3145 | } | |
3146 | ||
6dc19fc4 TW |
3147 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3148 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3149 | are properly nested. |
6dc19fc4 TW |
3150 | |
3151 | This function makes it easier to implement a premature "break" out of the | |
3152 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3153 | such as line substitutions. */ |
6dc19fc4 TW |
3154 | |
3155 | void | |
39e6acbd | 3156 | end_repeat (int extra) |
6dc19fc4 TW |
3157 | { |
3158 | cond_exit_macro (macro_nest); | |
3159 | while (extra-- >= 0) | |
3160 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3161 | } | |
3162 | ||
be95a9c1 | 3163 | static void |
9497f5ac | 3164 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3165 | { |
3166 | symbolS *symbolP; | |
3167 | ||
3168 | if (name[0] == '.' && name[1] == '\0') | |
3169 | { | |
3170 | /* Turn '. = mumble' into a .org mumble. */ | |
3171 | segT segment; | |
3172 | expressionS exp; | |
3173 | ||
3174 | segment = get_known_segmented_expression (&exp); | |
3175 | ||
3176 | if (!need_pass_2) | |
3177 | do_org (segment, &exp, 0); | |
3178 | ||
3179 | return; | |
3180 | } | |
3181 | ||
3182 | if ((symbolP = symbol_find (name)) == NULL | |
3183 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3184 | { | |
3185 | symbolP = symbol_find_or_make (name); | |
3186 | #ifndef NO_LISTING | |
3187 | /* When doing symbol listings, play games with dummy fragments living | |
3188 | outside the normal fragment chain to record the file and line info | |
3189 | for this symbol. */ | |
3190 | if (listing & LISTING_SYMBOLS) | |
3191 | { | |
3192 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 3193 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
3194 | dummy_frag->line = listing_tail; |
3195 | dummy_frag->fr_symbol = symbolP; | |
3196 | symbol_set_frag (symbolP, dummy_frag); | |
3197 | } | |
3198 | #endif | |
76bd66cf | 3199 | #if defined (OBJ_COFF) && !defined (TE_PE) |
31d20a21 AM |
3200 | /* "set" symbols are local unless otherwise specified. */ |
3201 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3202 | #endif |
3203 | } | |
3204 | ||
6a2b6326 | 3205 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac | 3206 | { |
9497f5ac | 3207 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) |
6885131b | 3208 | && !S_CAN_BE_REDEFINED (symbolP)) |
9497f5ac NC |
3209 | { |
3210 | as_bad (_("symbol `%s' is already defined"), name); | |
3211 | symbolP = symbol_clone (symbolP, 0); | |
3212 | } | |
3213 | /* If the symbol is volatile, copy the symbol and replace the | |
3214 | original with the copy, so that previous uses of the symbol will | |
3215 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3216 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3217 | symbolP = symbol_clone (symbolP, 1); |
3218 | } | |
3219 | ||
3220 | if (mode == 0) | |
3221 | S_SET_VOLATILE (symbolP); | |
3222 | else if (mode < 0) | |
3223 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3224 | |
3225 | pseudo_set (symbolP); | |
be95a9c1 AM |
3226 | } |
3227 | ||
9497f5ac NC |
3228 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3229 | then this is .equiv, and it is an error if the symbol is already | |
3230 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3231 | reference. */ | |
252b5132 | 3232 | |
041ff4dd | 3233 | void |
39e6acbd | 3234 | s_set (int equiv) |
252b5132 | 3235 | { |
be95a9c1 | 3236 | char *name; |
252b5132 | 3237 | |
041ff4dd NC |
3238 | /* Especial apologies for the random logic: |
3239 | this just grew, and could be parsed much more simply! | |
3240 | Dean in haste. */ | |
7bfd842d NC |
3241 | if ((name = read_symbol_name ()) == NULL) |
3242 | return; | |
252b5132 RH |
3243 | |
3244 | if (*input_line_pointer != ',') | |
3245 | { | |
0e389e77 | 3246 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 | 3247 | ignore_rest_of_line (); |
7bfd842d | 3248 | free (name); |
252b5132 RH |
3249 | return; |
3250 | } | |
3251 | ||
3252 | input_line_pointer++; | |
be95a9c1 | 3253 | assign_symbol (name, equiv); |
31d20a21 | 3254 | demand_empty_rest_of_line (); |
7bfd842d | 3255 | free (name); |
041ff4dd | 3256 | } |
252b5132 | 3257 | |
041ff4dd | 3258 | void |
39e6acbd | 3259 | s_space (int mult) |
252b5132 RH |
3260 | { |
3261 | expressionS exp; | |
3262 | expressionS val; | |
3263 | char *p = 0; | |
3264 | char *stop = NULL; | |
fb25138b | 3265 | char stopc = 0; |
252b5132 RH |
3266 | int bytes; |
3267 | ||
3268 | #ifdef md_flush_pending_output | |
3269 | md_flush_pending_output (); | |
3270 | #endif | |
3271 | ||
cc3f603a JM |
3272 | #ifdef md_cons_align |
3273 | md_cons_align (1); | |
3274 | #endif | |
3275 | ||
252b5132 RH |
3276 | if (flag_mri) |
3277 | stop = mri_comment_field (&stopc); | |
3278 | ||
3279 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3280 | this is ds.b. */ | |
3281 | if (flag_m68k_mri && mult > 1) | |
3282 | { | |
3283 | if (now_seg == absolute_section) | |
3284 | { | |
3285 | abs_section_offset += abs_section_offset & 1; | |
3286 | if (line_label != NULL) | |
3287 | S_SET_VALUE (line_label, abs_section_offset); | |
3288 | } | |
3289 | else if (mri_common_symbol != NULL) | |
3290 | { | |
91d6fa6a | 3291 | valueT mri_val; |
252b5132 | 3292 | |
91d6fa6a NC |
3293 | mri_val = S_GET_VALUE (mri_common_symbol); |
3294 | if ((mri_val & 1) != 0) | |
252b5132 | 3295 | { |
91d6fa6a | 3296 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3297 | if (line_label != NULL) |
3298 | { | |
2b47531b ILT |
3299 | expressionS *symexp; |
3300 | ||
3301 | symexp = symbol_get_value_expression (line_label); | |
3302 | know (symexp->X_op == O_symbol); | |
3303 | know (symexp->X_add_symbol == mri_common_symbol); | |
3304 | symexp->X_add_number += 1; | |
252b5132 RH |
3305 | } |
3306 | } | |
3307 | } | |
3308 | else | |
3309 | { | |
3310 | do_align (1, (char *) NULL, 0, 0); | |
3311 | if (line_label != NULL) | |
3312 | { | |
2b47531b | 3313 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3314 | S_SET_VALUE (line_label, frag_now_fix ()); |
3315 | } | |
3316 | } | |
3317 | } | |
3318 | ||
3319 | bytes = mult; | |
3320 | ||
3321 | expression (&exp); | |
3322 | ||
3323 | SKIP_WHITESPACE (); | |
3324 | if (*input_line_pointer == ',') | |
3325 | { | |
3326 | ++input_line_pointer; | |
3327 | expression (&val); | |
3328 | } | |
3329 | else | |
3330 | { | |
3331 | val.X_op = O_constant; | |
3332 | val.X_add_number = 0; | |
3333 | } | |
3334 | ||
3335 | if (val.X_op != O_constant | |
3336 | || val.X_add_number < - 0x80 | |
3337 | || val.X_add_number > 0xff | |
3338 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3339 | { | |
9497f5ac | 3340 | resolve_expression (&exp); |
252b5132 | 3341 | if (exp.X_op != O_constant) |
0e389e77 | 3342 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3343 | else |
3344 | { | |
3345 | offsetT i; | |
3346 | ||
3347 | if (mult == 0) | |
3348 | mult = 1; | |
3349 | bytes = mult * exp.X_add_number; | |
3350 | for (i = 0; i < exp.X_add_number; i++) | |
3351 | emit_expr (&val, mult); | |
3352 | } | |
3353 | } | |
3354 | else | |
3355 | { | |
9497f5ac NC |
3356 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3357 | resolve_expression (&exp); | |
3358 | ||
252b5132 RH |
3359 | if (exp.X_op == O_constant) |
3360 | { | |
a4a151e6 | 3361 | offsetT repeat; |
252b5132 RH |
3362 | |
3363 | repeat = exp.X_add_number; | |
3364 | if (mult) | |
3365 | repeat *= mult; | |
3366 | bytes = repeat; | |
3367 | if (repeat <= 0) | |
3368 | { | |
2d150871 RO |
3369 | if (!flag_mri) |
3370 | as_warn (_(".space repeat count is zero, ignored")); | |
3371 | else if (repeat < 0) | |
252b5132 RH |
3372 | as_warn (_(".space repeat count is negative, ignored")); |
3373 | goto getout; | |
3374 | } | |
3375 | ||
3376 | /* If we are in the absolute section, just bump the offset. */ | |
3377 | if (now_seg == absolute_section) | |
3378 | { | |
3379 | abs_section_offset += repeat; | |
3380 | goto getout; | |
3381 | } | |
3382 | ||
3383 | /* If we are secretly in an MRI common section, then | |
3384 | creating space just increases the size of the common | |
3385 | symbol. */ | |
3386 | if (mri_common_symbol != NULL) | |
3387 | { | |
3388 | S_SET_VALUE (mri_common_symbol, | |
3389 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3390 | goto getout; | |
3391 | } | |
3392 | ||
3393 | if (!need_pass_2) | |
3394 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3395 | (offsetT) repeat, (char *) 0); | |
3396 | } | |
3397 | else | |
3398 | { | |
3399 | if (now_seg == absolute_section) | |
3400 | { | |
3401 | as_bad (_("space allocation too complex in absolute section")); | |
3402 | subseg_set (text_section, 0); | |
3403 | } | |
f0e652b4 | 3404 | |
252b5132 RH |
3405 | if (mri_common_symbol != NULL) |
3406 | { | |
3407 | as_bad (_("space allocation too complex in common section")); | |
3408 | mri_common_symbol = NULL; | |
3409 | } | |
f0e652b4 | 3410 | |
252b5132 RH |
3411 | if (!need_pass_2) |
3412 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3413 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3414 | } | |
3415 | ||
3416 | if (p) | |
3417 | *p = val.X_add_number; | |
3418 | } | |
3419 | ||
3420 | getout: | |
3421 | ||
3422 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3423 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3424 | or dcb.b. */ | |
3425 | if (flag_mri && (bytes & 1) != 0) | |
3426 | mri_pending_align = 1; | |
3427 | ||
3428 | demand_empty_rest_of_line (); | |
3429 | ||
3430 | if (flag_mri) | |
3431 | mri_comment_end (stop, stopc); | |
3432 | } | |
3433 | ||
3434 | /* This is like s_space, but the value is a floating point number with | |
3435 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3436 | friends. */ | |
3437 | ||
3438 | void | |
39e6acbd | 3439 | s_float_space (int float_type) |
252b5132 RH |
3440 | { |
3441 | offsetT count; | |
3442 | int flen; | |
3443 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3444 | char *stop = NULL; | |
fb25138b | 3445 | char stopc = 0; |
252b5132 | 3446 | |
cc3f603a JM |
3447 | #ifdef md_cons_align |
3448 | md_cons_align (1); | |
3449 | #endif | |
3450 | ||
252b5132 RH |
3451 | if (flag_mri) |
3452 | stop = mri_comment_field (&stopc); | |
3453 | ||
3454 | count = get_absolute_expression (); | |
3455 | ||
3456 | SKIP_WHITESPACE (); | |
3457 | if (*input_line_pointer != ',') | |
3458 | { | |
3459 | as_bad (_("missing value")); | |
3460 | ignore_rest_of_line (); | |
3461 | if (flag_mri) | |
3462 | mri_comment_end (stop, stopc); | |
3463 | return; | |
3464 | } | |
3465 | ||
3466 | ++input_line_pointer; | |
3467 | ||
3468 | SKIP_WHITESPACE (); | |
3469 | ||
3470 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3471 | * letter is legal. */ | |
3472 | if (input_line_pointer[0] == '0' | |
3882b010 | 3473 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3474 | input_line_pointer += 2; |
3475 | ||
3476 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3477 | with the exact digits specified. */ | |
3478 | if (input_line_pointer[0] == ':') | |
3479 | { | |
3480 | flen = hex_float (float_type, temp); | |
3481 | if (flen < 0) | |
3482 | { | |
3483 | ignore_rest_of_line (); | |
3484 | if (flag_mri) | |
3485 | mri_comment_end (stop, stopc); | |
3486 | return; | |
3487 | } | |
3488 | } | |
3489 | else | |
3490 | { | |
3491 | char *err; | |
3492 | ||
3493 | err = md_atof (float_type, temp, &flen); | |
3494 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3495 | know (err != NULL || flen > 0); |
252b5132 RH |
3496 | if (err) |
3497 | { | |
0e389e77 | 3498 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3499 | ignore_rest_of_line (); |
3500 | if (flag_mri) | |
3501 | mri_comment_end (stop, stopc); | |
3502 | return; | |
3503 | } | |
3504 | } | |
3505 | ||
3506 | while (--count >= 0) | |
3507 | { | |
3508 | char *p; | |
3509 | ||
3510 | p = frag_more (flen); | |
3511 | memcpy (p, temp, (unsigned int) flen); | |
3512 | } | |
3513 | ||
3514 | demand_empty_rest_of_line (); | |
3515 | ||
3516 | if (flag_mri) | |
3517 | mri_comment_end (stop, stopc); | |
3518 | } | |
3519 | ||
3520 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3521 | ||
3522 | void | |
39e6acbd | 3523 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3524 | { |
3525 | char *stop = NULL; | |
fb25138b | 3526 | char stopc = 0; |
252b5132 RH |
3527 | |
3528 | if (flag_mri) | |
3529 | stop = mri_comment_field (&stopc); | |
3530 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3531 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3532 | /* The ELF backend needs to know that we are changing sections, so | |
3533 | that .previous works correctly. */ | |
f43abd2b | 3534 | if (IS_ELF) |
a2902af6 TS |
3535 | obj_elf_section_change_hook (); |
3536 | #endif | |
252b5132 RH |
3537 | subseg_set (absolute_section, 0); |
3538 | demand_empty_rest_of_line (); | |
3539 | if (flag_mri) | |
3540 | mri_comment_end (stop, stopc); | |
3541 | } | |
3542 | ||
3543 | void | |
39e6acbd | 3544 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3545 | { |
3d540e93 | 3546 | int temp; |
252b5132 RH |
3547 | |
3548 | temp = get_absolute_expression (); | |
3549 | subseg_set (text_section, (subsegT) temp); | |
3550 | demand_empty_rest_of_line (); | |
041ff4dd | 3551 | } |
06e77878 AO |
3552 | |
3553 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3554 | referenced directly, will cause y to become a weak symbol. */ | |
3555 | void | |
3556 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3557 | { | |
3558 | char *name; | |
06e77878 AO |
3559 | symbolS *symbolP; |
3560 | symbolS *symbolP2; | |
3561 | expressionS exp; | |
3562 | ||
7bfd842d NC |
3563 | if ((name = read_symbol_name ()) == NULL) |
3564 | return; | |
06e77878 AO |
3565 | |
3566 | symbolP = symbol_find_or_make (name); | |
3567 | ||
b54788f8 AO |
3568 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3569 | { | |
89cdfe57 | 3570 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3571 | { |
3572 | as_bad (_("symbol `%s' is already defined"), name); | |
7bfd842d | 3573 | goto err_out; |
92757bc9 | 3574 | } |
89cdfe57 | 3575 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3576 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3577 | } |
3578 | ||
06e77878 AO |
3579 | SKIP_WHITESPACE (); |
3580 | ||
3581 | if (*input_line_pointer != ',') | |
3582 | { | |
06e77878 | 3583 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 3584 | goto err_out; |
06e77878 AO |
3585 | } |
3586 | ||
3587 | input_line_pointer++; | |
3588 | ||
3589 | SKIP_WHITESPACE (); | |
7bfd842d | 3590 | free (name); |
06e77878 | 3591 | |
7bfd842d NC |
3592 | if ((name = read_symbol_name ()) == NULL) |
3593 | return; | |
06e77878 AO |
3594 | |
3595 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3596 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3597 | { | |
3598 | symbolP2 = symbol_find_or_make (name); | |
3599 | S_SET_WEAKREFD (symbolP2); | |
3600 | } | |
3601 | else | |
3602 | { | |
3603 | symbolS *symp = symbolP2; | |
3604 | ||
3605 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3606 | { | |
3607 | expressionS *expP = symbol_get_value_expression (symp); | |
3608 | ||
9c2799c2 | 3609 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3610 | && expP->X_add_number == 0); |
3611 | symp = expP->X_add_symbol; | |
3612 | } | |
3613 | if (symp == symbolP) | |
3614 | { | |
3615 | char *loop; | |
3616 | ||
3617 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3618 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3619 | |
3620 | symp = symbolP2; | |
3621 | while (symp != symbolP) | |
3622 | { | |
3623 | char *old_loop = loop; | |
7bfd842d | 3624 | |
06e77878 | 3625 | symp = symbol_get_value_expression (symp)->X_add_symbol; |
1bf57e9f AM |
3626 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3627 | (const char *) NULL); | |
06e77878 AO |
3628 | free (old_loop); |
3629 | } | |
3630 | ||
3631 | as_bad (_("%s: would close weakref loop: %s"), | |
3632 | S_GET_NAME (symbolP), loop); | |
3633 | ||
3634 | free (loop); | |
7bfd842d | 3635 | free (name); |
06e77878 AO |
3636 | ignore_rest_of_line (); |
3637 | return; | |
3638 | } | |
3639 | ||
3640 | /* Short-circuiting instead of just checking here might speed | |
3641 | things up a tiny little bit, but loop error messages would | |
3642 | miss intermediate links. */ | |
3643 | /* symbolP2 = symp; */ | |
3644 | } | |
3645 | ||
06e77878 AO |
3646 | memset (&exp, 0, sizeof (exp)); |
3647 | exp.X_op = O_symbol; | |
3648 | exp.X_add_symbol = symbolP2; | |
3649 | ||
3650 | S_SET_SEGMENT (symbolP, undefined_section); | |
3651 | symbol_set_value_expression (symbolP, &exp); | |
3652 | symbol_set_frag (symbolP, &zero_address_frag); | |
3653 | S_SET_WEAKREFR (symbolP); | |
3654 | ||
3655 | demand_empty_rest_of_line (); | |
7bfd842d NC |
3656 | free (name); |
3657 | return; | |
3658 | ||
3659 | err_out: | |
3660 | ignore_rest_of_line (); | |
3661 | free (name); | |
3662 | return; | |
06e77878 | 3663 | } |
252b5132 | 3664 | \f |
c95b35a9 NS |
3665 | |
3666 | /* Verify that we are at the end of a line. If not, issue an error and | |
3667 | skip to EOL. */ | |
3668 | ||
041ff4dd | 3669 | void |
39e6acbd | 3670 | demand_empty_rest_of_line (void) |
252b5132 RH |
3671 | { |
3672 | SKIP_WHITESPACE (); | |
3673 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3674 | input_line_pointer++; |
252b5132 | 3675 | else |
252b5132 | 3676 | { |
3882b010 | 3677 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3678 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3679 | *input_line_pointer); |
252b5132 | 3680 | else |
c95b35a9 | 3681 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3682 | *input_line_pointer); |
c95b35a9 | 3683 | ignore_rest_of_line (); |
252b5132 | 3684 | } |
fa94de6b | 3685 | |
c95b35a9 NS |
3686 | /* Return pointing just after end-of-line. */ |
3687 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3688 | } | |
3689 | ||
3690 | /* Silently advance to the end of line. Use this after already having | |
3691 | issued an error about something bad. */ | |
3692 | ||
3693 | void | |
3694 | ignore_rest_of_line (void) | |
3695 | { | |
3696 | while (input_line_pointer < buffer_limit | |
3697 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3698 | input_line_pointer++; | |
f0e652b4 | 3699 | |
041ff4dd NC |
3700 | input_line_pointer++; |
3701 | ||
3702 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3703 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3704 | } | |
3705 | ||
be95a9c1 AM |
3706 | /* Sets frag for given symbol to zero_address_frag, except when the |
3707 | symbol frag is already set to a dummy listing frag. */ | |
3708 | ||
3709 | static void | |
3710 | set_zero_frag (symbolS *symbolP) | |
3711 | { | |
3712 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3713 | symbol_set_frag (symbolP, &zero_address_frag); | |
3714 | } | |
3715 | ||
041ff4dd | 3716 | /* In: Pointer to a symbol. |
d6415f6c | 3717 | Input_line_pointer->expression. |
f0e652b4 | 3718 | |
041ff4dd | 3719 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3720 | Tried to set symbol to value of expression. |
3721 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3722 | |
252b5132 | 3723 | void |
39e6acbd | 3724 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3725 | { |
3726 | expressionS exp; | |
be95a9c1 | 3727 | segT seg; |
252b5132 | 3728 | |
041ff4dd | 3729 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3730 | |
9497f5ac NC |
3731 | if (!S_IS_FORWARD_REF (symbolP)) |
3732 | (void) expression (&exp); | |
3733 | else | |
3734 | (void) deferred_expression (&exp); | |
252b5132 RH |
3735 | |
3736 | if (exp.X_op == O_illegal) | |
0e389e77 | 3737 | as_bad (_("illegal expression")); |
252b5132 | 3738 | else if (exp.X_op == O_absent) |
0e389e77 | 3739 | as_bad (_("missing expression")); |
252b5132 RH |
3740 | else if (exp.X_op == O_big) |
3741 | { | |
3742 | if (exp.X_add_number > 0) | |
0e389e77 | 3743 | as_bad (_("bignum invalid")); |
252b5132 | 3744 | else |
0e389e77 | 3745 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3746 | } |
3747 | else if (exp.X_op == O_subtract | |
9497f5ac | 3748 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3749 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3750 | && (symbol_get_frag (exp.X_add_symbol) |
3751 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3752 | { |
3753 | exp.X_op = O_constant; | |
3754 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3755 | - S_GET_VALUE (exp.X_op_symbol)); | |
3756 | } | |
3757 | ||
be95a9c1 AM |
3758 | if (symbol_section_p (symbolP)) |
3759 | { | |
3760 | as_bad ("attempt to set value of section symbol"); | |
3761 | return; | |
3762 | } | |
be95a9c1 | 3763 | |
252b5132 RH |
3764 | switch (exp.X_op) |
3765 | { | |
3766 | case O_illegal: | |
3767 | case O_absent: | |
3768 | case O_big: | |
3769 | exp.X_add_number = 0; | |
3770 | /* Fall through. */ | |
3771 | case O_constant: | |
3772 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3773 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3774 | set_zero_frag (symbolP); |
252b5132 RH |
3775 | break; |
3776 | ||
3777 | case O_register: | |
97c4f2d9 | 3778 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3779 | if (S_IS_EXTERNAL (symbolP)) |
3780 | { | |
3781 | as_bad ("can't equate global symbol `%s' with register name", | |
3782 | S_GET_NAME (symbolP)); | |
3783 | return; | |
3784 | } | |
97c4f2d9 | 3785 | #endif |
252b5132 RH |
3786 | S_SET_SEGMENT (symbolP, reg_section); |
3787 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3788 | set_zero_frag (symbolP); |
db557034 | 3789 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3790 | break; |
3791 | ||
3792 | case O_symbol: | |
be95a9c1 AM |
3793 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3794 | /* For x=undef+const, create an expression symbol. | |
3795 | For x=x+const, just update x except when x is an undefined symbol | |
3796 | For x=defined+const, evaluate x. */ | |
3797 | if (symbolP == exp.X_add_symbol | |
3798 | && (seg != undefined_section | |
3799 | || !symbol_constant_p (symbolP))) | |
3800 | { | |
3801 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3802 | break; | |
3803 | } | |
9497f5ac | 3804 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3805 | { |
3806 | symbolS *s = exp.X_add_symbol; | |
3807 | ||
60938e80 L |
3808 | if (S_IS_COMMON (s)) |
3809 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3810 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3811 | ||
be95a9c1 AM |
3812 | S_SET_SEGMENT (symbolP, seg); |
3813 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3814 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3815 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3816 | break; |
252b5132 | 3817 | } |
66bd02d3 AM |
3818 | S_SET_SEGMENT (symbolP, undefined_section); |
3819 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 3820 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
3821 | set_zero_frag (symbolP); |
3822 | break; | |
252b5132 RH |
3823 | |
3824 | default: | |
aba4aa7d AM |
3825 | /* The value is some complex expression. */ |
3826 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3827 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3828 | set_zero_frag (symbolP); |
252b5132 RH |
3829 | break; |
3830 | } | |
3831 | } | |
3832 | \f | |
d6415f6c | 3833 | /* cons() |
f0e652b4 | 3834 | |
041ff4dd NC |
3835 | CONStruct more frag of .bytes, or .words etc. |
3836 | Should need_pass_2 be 1 then emit no frag(s). | |
3837 | This understands EXPRESSIONS. | |
f0e652b4 | 3838 | |
041ff4dd | 3839 | Bug (?) |
f0e652b4 | 3840 | |
041ff4dd NC |
3841 | This has a split personality. We use expression() to read the |
3842 | value. We can detect if the value won't fit in a byte or word. | |
3843 | But we can't detect if expression() discarded significant digits | |
3844 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3845 | |
3846 | /* Select a parser for cons expressions. */ | |
3847 | ||
3848 | /* Some targets need to parse the expression in various fancy ways. | |
3849 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3850 | (for example, the HPPA does this). Otherwise, you can define | |
3851 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3852 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3853 | are defined, which is the normal case, then only simple expressions | |
3854 | are permitted. */ | |
3855 | ||
abd63a32 | 3856 | #ifdef TC_M68K |
252b5132 | 3857 | static void |
39e6acbd | 3858 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3859 | #endif |
252b5132 RH |
3860 | |
3861 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3862 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
62ebcb5c AM |
3863 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3864 | (parse_bitfield_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
041ff4dd | 3865 | static void |
39e6acbd | 3866 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3867 | #endif |
3868 | #ifdef REPEAT_CONS_EXPRESSIONS | |
62ebcb5c AM |
3869 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3870 | (parse_repeat_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 | 3871 | static void |
39e6acbd | 3872 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3873 | #endif |
3874 | ||
3875 | /* If we haven't gotten one yet, just call expression. */ | |
3876 | #ifndef TC_PARSE_CONS_EXPRESSION | |
62ebcb5c AM |
3877 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3878 | (expression (EXP), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 RH |
3879 | #endif |
3880 | #endif | |
3881 | ||
cdfbf930 | 3882 | void |
b41b1f95 L |
3883 | do_parse_cons_expression (expressionS *exp, |
3884 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 | 3885 | { |
62ebcb5c | 3886 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
cdfbf930 RH |
3887 | } |
3888 | ||
3889 | ||
041ff4dd NC |
3890 | /* Worker to do .byte etc statements. |
3891 | Clobbers input_line_pointer and checks end-of-line. */ | |
3892 | ||
3893 | static void | |
3d540e93 | 3894 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 3895 | int rva) |
252b5132 RH |
3896 | { |
3897 | int c; | |
3898 | expressionS exp; | |
3899 | char *stop = NULL; | |
fb25138b | 3900 | char stopc = 0; |
252b5132 RH |
3901 | |
3902 | #ifdef md_flush_pending_output | |
3903 | md_flush_pending_output (); | |
3904 | #endif | |
3905 | ||
3906 | if (flag_mri) | |
3907 | stop = mri_comment_field (&stopc); | |
3908 | ||
3909 | if (is_it_end_of_statement ()) | |
3910 | { | |
3911 | demand_empty_rest_of_line (); | |
3912 | if (flag_mri) | |
3913 | mri_comment_end (stop, stopc); | |
3914 | return; | |
3915 | } | |
3916 | ||
cc1bc22a AM |
3917 | #ifdef TC_ADDRESS_BYTES |
3918 | if (nbytes == 0) | |
3919 | nbytes = TC_ADDRESS_BYTES (); | |
3920 | #endif | |
3921 | ||
252b5132 RH |
3922 | #ifdef md_cons_align |
3923 | md_cons_align (nbytes); | |
3924 | #endif | |
3925 | ||
3926 | c = 0; | |
3927 | do | |
3928 | { | |
62ebcb5c | 3929 | TC_PARSE_CONS_RETURN_TYPE ret = TC_PARSE_CONS_RETURN_NONE; |
bf7279d5 AM |
3930 | #ifdef TC_CONS_FIX_CHECK |
3931 | fixS **cur_fix = &frchain_now->fix_tail; | |
3932 | ||
3933 | if (*cur_fix != NULL) | |
3934 | cur_fix = &(*cur_fix)->fx_next; | |
3935 | #endif | |
62ebcb5c | 3936 | |
abd63a32 | 3937 | #ifdef TC_M68K |
252b5132 RH |
3938 | if (flag_m68k_mri) |
3939 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3940 | else | |
abd63a32 | 3941 | #endif |
fa94de6b | 3942 | { |
d02603dc | 3943 | #if 0 |
847d4311 NS |
3944 | if (*input_line_pointer == '"') |
3945 | { | |
3946 | as_bad (_("unexpected `\"' in expression")); | |
3947 | ignore_rest_of_line (); | |
3948 | return; | |
3949 | } | |
d02603dc | 3950 | #endif |
62ebcb5c | 3951 | ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
847d4311 | 3952 | } |
252b5132 RH |
3953 | |
3954 | if (rva) | |
3955 | { | |
3956 | if (exp.X_op == O_symbol) | |
3957 | exp.X_op = O_symbol_rva; | |
3958 | else | |
3959 | as_fatal (_("rva without symbol")); | |
3960 | } | |
62ebcb5c | 3961 | emit_expr_with_reloc (&exp, (unsigned int) nbytes, ret); |
bf7279d5 AM |
3962 | #ifdef TC_CONS_FIX_CHECK |
3963 | TC_CONS_FIX_CHECK (&exp, nbytes, *cur_fix); | |
3964 | #endif | |
252b5132 RH |
3965 | ++c; |
3966 | } | |
3967 | while (*input_line_pointer++ == ','); | |
3968 | ||
3969 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3970 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3971 | or dcb.b. */ | |
3972 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3973 | mri_pending_align = 1; | |
3974 | ||
041ff4dd | 3975 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3976 | |
3977 | demand_empty_rest_of_line (); | |
3978 | ||
3979 | if (flag_mri) | |
3980 | mri_comment_end (stop, stopc); | |
3981 | } | |
3982 | ||
252b5132 | 3983 | void |
39e6acbd | 3984 | cons (int size) |
252b5132 RH |
3985 | { |
3986 | cons_worker (size, 0); | |
3987 | } | |
3988 | ||
041ff4dd | 3989 | void |
39e6acbd | 3990 | s_rva (int size) |
252b5132 RH |
3991 | { |
3992 | cons_worker (size, 1); | |
3993 | } | |
3994 | ||
05e9452c AM |
3995 | /* .reloc offset, reloc_name, symbol+addend. */ |
3996 | ||
b38ead21 | 3997 | static void |
05e9452c AM |
3998 | s_reloc (int ignore ATTRIBUTE_UNUSED) |
3999 | { | |
4000 | char *stop = NULL; | |
4001 | char stopc = 0; | |
4002 | expressionS exp; | |
4003 | char *r_name; | |
4004 | int c; | |
4005 | struct reloc_list *reloc; | |
740bdc67 AM |
4006 | struct _bfd_rel { char *name; bfd_reloc_code_real_type code; }; |
4007 | static struct _bfd_rel bfd_relocs[] = { | |
4008 | { "NONE", BFD_RELOC_NONE }, | |
4009 | { "8", BFD_RELOC_8 }, | |
4010 | { "16", BFD_RELOC_16 }, | |
4011 | { "32", BFD_RELOC_32 }, | |
4012 | { "64", BFD_RELOC_64 } | |
4013 | }; | |
05e9452c | 4014 | |
1e9cc1c2 | 4015 | reloc = (struct reloc_list *) xmalloc (sizeof (*reloc)); |
05e9452c AM |
4016 | |
4017 | if (flag_mri) | |
4018 | stop = mri_comment_field (&stopc); | |
4019 | ||
4020 | expression (&exp); | |
4021 | switch (exp.X_op) | |
4022 | { | |
4023 | case O_illegal: | |
4024 | case O_absent: | |
4025 | case O_big: | |
4026 | case O_register: | |
4027 | as_bad (_("missing or bad offset expression")); | |
4028 | goto err_out; | |
4029 | case O_constant: | |
4030 | exp.X_add_symbol = section_symbol (now_seg); | |
4031 | exp.X_op = O_symbol; | |
4032 | /* Fall thru */ | |
4033 | case O_symbol: | |
4034 | if (exp.X_add_number == 0) | |
4035 | { | |
4036 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
4037 | break; | |
4038 | } | |
4039 | /* Fall thru */ | |
4040 | default: | |
4041 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
4042 | break; | |
4043 | } | |
4044 | ||
4045 | SKIP_WHITESPACE (); | |
4046 | if (*input_line_pointer != ',') | |
4047 | { | |
4048 | as_bad (_("missing reloc type")); | |
4049 | goto err_out; | |
4050 | } | |
4051 | ||
4052 | ++input_line_pointer; | |
4053 | SKIP_WHITESPACE (); | |
d02603dc | 4054 | c = get_symbol_name (& r_name); |
740bdc67 AM |
4055 | if (strncasecmp (r_name, "BFD_RELOC_", 10) == 0) |
4056 | { | |
4057 | unsigned int i; | |
4058 | ||
4059 | for (reloc->u.a.howto = NULL, i = 0; i < ARRAY_SIZE (bfd_relocs); i++) | |
4060 | if (strcasecmp (r_name + 10, bfd_relocs[i].name) == 0) | |
4061 | { | |
4062 | reloc->u.a.howto = bfd_reloc_type_lookup (stdoutput, | |
4063 | bfd_relocs[i].code); | |
4064 | break; | |
4065 | } | |
4066 | } | |
4067 | else | |
4068 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
05e9452c AM |
4069 | *input_line_pointer = c; |
4070 | if (reloc->u.a.howto == NULL) | |
4071 | { | |
4072 | as_bad (_("unrecognized reloc type")); | |
4073 | goto err_out; | |
4074 | } | |
4075 | ||
4076 | exp.X_op = O_absent; | |
d02603dc | 4077 | SKIP_WHITESPACE_AFTER_NAME (); |
05e9452c AM |
4078 | if (*input_line_pointer == ',') |
4079 | { | |
4080 | ++input_line_pointer; | |
c188d0bb | 4081 | expression (&exp); |
05e9452c AM |
4082 | } |
4083 | switch (exp.X_op) | |
4084 | { | |
4085 | case O_illegal: | |
4086 | case O_big: | |
4087 | case O_register: | |
4088 | as_bad (_("bad reloc expression")); | |
4089 | err_out: | |
4090 | ignore_rest_of_line (); | |
4091 | free (reloc); | |
4092 | if (flag_mri) | |
4093 | mri_comment_end (stop, stopc); | |
4094 | return; | |
4095 | case O_absent: | |
4096 | reloc->u.a.sym = NULL; | |
4097 | reloc->u.a.addend = 0; | |
4098 | break; | |
4099 | case O_constant: | |
4100 | reloc->u.a.sym = NULL; | |
4101 | reloc->u.a.addend = exp.X_add_number; | |
4102 | break; | |
4103 | case O_symbol: | |
4104 | reloc->u.a.sym = exp.X_add_symbol; | |
4105 | reloc->u.a.addend = exp.X_add_number; | |
4106 | break; | |
4107 | default: | |
4108 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4109 | reloc->u.a.addend = 0; | |
4110 | break; | |
4111 | } | |
4112 | ||
4113 | as_where (&reloc->file, &reloc->line); | |
4114 | reloc->next = reloc_list; | |
4115 | reloc_list = reloc; | |
4116 | ||
4117 | demand_empty_rest_of_line (); | |
4118 | if (flag_mri) | |
4119 | mri_comment_end (stop, stopc); | |
4120 | } | |
4121 | ||
252b5132 RH |
4122 | /* Put the contents of expression EXP into the object file using |
4123 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4124 | ||
4125 | void | |
39e6acbd | 4126 | emit_expr (expressionS *exp, unsigned int nbytes) |
62ebcb5c AM |
4127 | { |
4128 | emit_expr_with_reloc (exp, nbytes, TC_PARSE_CONS_RETURN_NONE); | |
4129 | } | |
4130 | ||
4131 | void | |
4132 | emit_expr_with_reloc (expressionS *exp, | |
4133 | unsigned int nbytes, | |
4134 | TC_PARSE_CONS_RETURN_TYPE reloc) | |
252b5132 RH |
4135 | { |
4136 | operatorT op; | |
3d540e93 | 4137 | char *p; |
252b5132 RH |
4138 | valueT extra_digit = 0; |
4139 | ||
4140 | /* Don't do anything if we are going to make another pass. */ | |
4141 | if (need_pass_2) | |
4142 | return; | |
4143 | ||
4bc25101 | 4144 | frag_grow (nbytes); |
ed7d5d1a | 4145 | dot_value = frag_now_fix (); |
8e723a10 | 4146 | dot_frag = frag_now; |
ed7d5d1a | 4147 | |
252b5132 RH |
4148 | #ifndef NO_LISTING |
4149 | #ifdef OBJ_ELF | |
4150 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4151 | appear as a four byte positive constant in the .line section, | |
4152 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4153 | { | |
4154 | static int dwarf_line = -1; | |
4155 | ||
4156 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4157 | dwarf_line = -1; | |
4158 | else if (dwarf_line >= 0 | |
4159 | && nbytes == 2 | |
4160 | && exp->X_op == O_constant | |
4161 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4162 | listing_source_line ((unsigned int) dwarf_line); | |
4163 | else if (nbytes == 4 | |
4164 | && exp->X_op == O_constant | |
4165 | && exp->X_add_number >= 0) | |
4166 | dwarf_line = exp->X_add_number; | |
4167 | else | |
4168 | dwarf_line = -1; | |
4169 | } | |
4170 | ||
4171 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4172 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4173 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4174 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4175 | file. We look for that case here. */ | |
4176 | { | |
4177 | static int dwarf_file = 0; | |
4178 | ||
4179 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4180 | dwarf_file = 0; | |
4181 | else if (dwarf_file == 0 | |
4182 | && nbytes == 2 | |
4183 | && exp->X_op == O_constant | |
4184 | && exp->X_add_number == 0x11) | |
4185 | dwarf_file = 1; | |
4186 | else if (dwarf_file == 1 | |
4187 | && nbytes == 2 | |
4188 | && exp->X_op == O_constant | |
4189 | && exp->X_add_number == 0x12) | |
4190 | dwarf_file = 2; | |
4191 | else if (dwarf_file == 2 | |
4192 | && nbytes == 4) | |
4193 | dwarf_file = 3; | |
4194 | else if (dwarf_file == 3 | |
4195 | && nbytes == 2 | |
4196 | && exp->X_op == O_constant | |
4197 | && exp->X_add_number == 0x38) | |
4198 | dwarf_file = 4; | |
4199 | else | |
4200 | dwarf_file = 0; | |
4201 | ||
4202 | /* The variable dwarf_file_string tells stringer that the string | |
4203 | may be the name of the source file. */ | |
4204 | if (dwarf_file == 4) | |
4205 | dwarf_file_string = 1; | |
4206 | else | |
4207 | dwarf_file_string = 0; | |
4208 | } | |
4209 | #endif | |
4210 | #endif | |
4211 | ||
4212 | if (check_eh_frame (exp, &nbytes)) | |
4213 | return; | |
4214 | ||
4215 | op = exp->X_op; | |
4216 | ||
4217 | /* Allow `.word 0' in the absolute section. */ | |
4218 | if (now_seg == absolute_section) | |
4219 | { | |
4220 | if (op != O_constant || exp->X_add_number != 0) | |
4221 | as_bad (_("attempt to store value in absolute section")); | |
4222 | abs_section_offset += nbytes; | |
4223 | return; | |
4224 | } | |
4225 | ||
4226 | /* Handle a negative bignum. */ | |
4227 | if (op == O_uminus | |
4228 | && exp->X_add_number == 0 | |
2b47531b ILT |
4229 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4230 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4231 | { |
4232 | int i; | |
4233 | unsigned long carry; | |
4234 | ||
2b47531b | 4235 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4236 | |
4237 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4238 | carry = 1; | |
4239 | for (i = 0; i < exp->X_add_number; i++) | |
4240 | { | |
4241 | unsigned long next; | |
4242 | ||
041ff4dd | 4243 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4244 | & LITTLENUM_MASK) |
4245 | + carry); | |
4246 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4247 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4248 | } | |
4249 | ||
4250 | /* We can ignore any carry out, because it will be handled by | |
4251 | extra_digit if it is needed. */ | |
4252 | ||
4253 | extra_digit = (valueT) -1; | |
4254 | op = O_big; | |
4255 | } | |
4256 | ||
4257 | if (op == O_absent || op == O_illegal) | |
4258 | { | |
4259 | as_warn (_("zero assumed for missing expression")); | |
4260 | exp->X_add_number = 0; | |
4261 | op = O_constant; | |
4262 | } | |
4263 | else if (op == O_big && exp->X_add_number <= 0) | |
4264 | { | |
0e389e77 | 4265 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4266 | exp->X_add_number = 0; |
4267 | op = O_constant; | |
4268 | } | |
4269 | else if (op == O_register) | |
4270 | { | |
4271 | as_warn (_("register value used as expression")); | |
4272 | op = O_constant; | |
4273 | } | |
4274 | ||
4275 | p = frag_more ((int) nbytes); | |
4276 | ||
62ebcb5c AM |
4277 | if (reloc != TC_PARSE_CONS_RETURN_NONE) |
4278 | { | |
4279 | emit_expr_fix (exp, nbytes, frag_now, p, reloc); | |
4280 | return; | |
4281 | } | |
4282 | ||
252b5132 RH |
4283 | #ifndef WORKING_DOT_WORD |
4284 | /* If we have the difference of two symbols in a word, save it on | |
4285 | the broken_words list. See the code in write.c. */ | |
4286 | if (op == O_subtract && nbytes == 2) | |
4287 | { | |
4288 | struct broken_word *x; | |
4289 | ||
4290 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
4291 | x->next_broken_word = broken_words; | |
4292 | broken_words = x; | |
4293 | x->seg = now_seg; | |
4294 | x->subseg = now_subseg; | |
4295 | x->frag = frag_now; | |
4296 | x->word_goes_here = p; | |
4297 | x->dispfrag = 0; | |
4298 | x->add = exp->X_add_symbol; | |
4299 | x->sub = exp->X_op_symbol; | |
4300 | x->addnum = exp->X_add_number; | |
4301 | x->added = 0; | |
dc59a897 | 4302 | x->use_jump = 0; |
252b5132 RH |
4303 | new_broken_words++; |
4304 | return; | |
4305 | } | |
4306 | #endif | |
4307 | ||
4308 | /* If we have an integer, but the number of bytes is too large to | |
4309 | pass to md_number_to_chars, handle it as a bignum. */ | |
4310 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4311 | { | |
e5604d79 | 4312 | extra_digit = exp->X_unsigned ? 0 : -1; |
956a6ba3 | 4313 | convert_to_bignum (exp, !exp->X_unsigned); |
e5604d79 | 4314 | op = O_big; |
252b5132 RH |
4315 | } |
4316 | ||
4317 | if (op == O_constant) | |
4318 | { | |
3d540e93 NC |
4319 | valueT get; |
4320 | valueT use; | |
4321 | valueT mask; | |
252b5132 | 4322 | valueT hibit; |
3d540e93 | 4323 | valueT unmask; |
252b5132 RH |
4324 | |
4325 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4326 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4327 | if (nbytes >= sizeof (valueT)) |
4328 | { | |
4329 | mask = 0; | |
4330 | if (nbytes > sizeof (valueT)) | |
4331 | hibit = 0; | |
4332 | else | |
4333 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4334 | } | |
4335 | else | |
4336 | { | |
041ff4dd | 4337 | /* Don't store these bits. */ |
252b5132 RH |
4338 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4339 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4340 | } | |
4341 | ||
041ff4dd | 4342 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4343 | |
4344 | #ifdef NEVER | |
4345 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4346 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4347 | #endif |
4348 | ||
4349 | get = exp->X_add_number; | |
4350 | use = get & unmask; | |
4351 | if ((get & mask) != 0 | |
4352 | && ((get & mask) != mask | |
4353 | || (get & hibit) == 0)) | |
041ff4dd | 4354 | { /* Leading bits contain both 0s & 1s. */ |
b6ac5419 | 4355 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4356 | #ifndef __MSVCRT__ |
5c612369 NC |
4357 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4358 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4359 | #else |
4360 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4361 | (unsigned long long) get, (unsigned long long) use); | |
4362 | #endif | |
b6ac5419 AM |
4363 | #else |
4364 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4365 | (unsigned long) get, (unsigned long) use); | |
4366 | #endif | |
252b5132 | 4367 | } |
041ff4dd | 4368 | /* Put bytes in right order. */ |
252b5132 RH |
4369 | md_number_to_chars (p, use, (int) nbytes); |
4370 | } | |
4371 | else if (op == O_big) | |
4372 | { | |
4373 | unsigned int size; | |
4374 | LITTLENUM_TYPE *nums; | |
4375 | ||
252b5132 RH |
4376 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4377 | if (nbytes < size) | |
4378 | { | |
93d90f46 AM |
4379 | int i = nbytes / CHARS_PER_LITTLENUM; |
4380 | if (i != 0) | |
4381 | { | |
4382 | LITTLENUM_TYPE sign = 0; | |
4383 | if ((generic_bignum[--i] | |
4384 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4385 | sign = ~(LITTLENUM_TYPE) 0; | |
4386 | while (++i < exp->X_add_number) | |
4387 | if (generic_bignum[i] != sign) | |
4388 | break; | |
4389 | } | |
4390 | if (i < exp->X_add_number) | |
4391 | as_warn (_("bignum truncated to %d bytes"), nbytes); | |
252b5132 RH |
4392 | size = nbytes; |
4393 | } | |
4394 | ||
93d90f46 AM |
4395 | if (nbytes == 1) |
4396 | { | |
4397 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4398 | return; | |
4399 | } | |
4400 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4401 | ||
252b5132 RH |
4402 | if (target_big_endian) |
4403 | { | |
4404 | while (nbytes > size) | |
4405 | { | |
4406 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4407 | nbytes -= CHARS_PER_LITTLENUM; | |
4408 | p += CHARS_PER_LITTLENUM; | |
4409 | } | |
4410 | ||
4411 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4412 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4413 | { |
4414 | --nums; | |
4415 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4416 | size -= CHARS_PER_LITTLENUM; | |
4417 | p += CHARS_PER_LITTLENUM; | |
4418 | } | |
4419 | } | |
4420 | else | |
4421 | { | |
4422 | nums = generic_bignum; | |
ceac3f62 | 4423 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4424 | { |
4425 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4426 | ++nums; | |
4427 | size -= CHARS_PER_LITTLENUM; | |
4428 | p += CHARS_PER_LITTLENUM; | |
4429 | nbytes -= CHARS_PER_LITTLENUM; | |
4430 | } | |
4431 | ||
ceac3f62 | 4432 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4433 | { |
4434 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4435 | nbytes -= CHARS_PER_LITTLENUM; | |
4436 | p += CHARS_PER_LITTLENUM; | |
4437 | } | |
4438 | } | |
4439 | } | |
4440 | else | |
62ebcb5c | 4441 | emit_expr_fix (exp, nbytes, frag_now, p, TC_PARSE_CONS_RETURN_NONE); |
7ddd14de BW |
4442 | } |
4443 | ||
4444 | void | |
62ebcb5c | 4445 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p, |
00c06fdc | 4446 | TC_PARSE_CONS_RETURN_TYPE r ATTRIBUTE_UNUSED) |
7ddd14de | 4447 | { |
62ebcb5c AM |
4448 | int offset = 0; |
4449 | unsigned int size = nbytes; | |
4450 | ||
4451 | memset (p, 0, size); | |
252b5132 | 4452 | |
7ddd14de | 4453 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4454 | |
252b5132 | 4455 | #ifdef TC_CONS_FIX_NEW |
62ebcb5c | 4456 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal + offset, size, exp, r); |
252b5132 | 4457 | #else |
62ebcb5c AM |
4458 | if (r != TC_PARSE_CONS_RETURN_NONE) |
4459 | { | |
4460 | reloc_howto_type *reloc_howto; | |
252b5132 | 4461 | |
62ebcb5c AM |
4462 | reloc_howto = bfd_reloc_type_lookup (stdoutput, r); |
4463 | size = bfd_get_reloc_size (reloc_howto); | |
4464 | ||
4465 | if (size > nbytes) | |
4466 | { | |
4467 | as_bad (_("%s relocations do not fit in %u bytes\n"), | |
4468 | reloc_howto->name, nbytes); | |
4469 | return; | |
4470 | } | |
4471 | else if (target_big_endian) | |
4472 | offset = nbytes - size; | |
4473 | } | |
4474 | else | |
4475 | switch (size) | |
7ddd14de BW |
4476 | { |
4477 | case 1: | |
4478 | r = BFD_RELOC_8; | |
4479 | break; | |
4480 | case 2: | |
4481 | r = BFD_RELOC_16; | |
4482 | break; | |
d4f4f3fb AM |
4483 | case 3: |
4484 | r = BFD_RELOC_24; | |
4485 | break; | |
7ddd14de BW |
4486 | case 4: |
4487 | r = BFD_RELOC_32; | |
4488 | break; | |
4489 | case 8: | |
4490 | r = BFD_RELOC_64; | |
4491 | break; | |
4492 | default: | |
62ebcb5c AM |
4493 | as_bad (_("unsupported BFD relocation size %u"), size); |
4494 | return; | |
252b5132 | 4495 | } |
62ebcb5c AM |
4496 | fix_new_exp (frag, p - frag->fr_literal + offset, size, |
4497 | exp, 0, r); | |
252b5132 | 4498 | #endif |
252b5132 RH |
4499 | } |
4500 | \f | |
4501 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
4502 | ||
4503 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
4504 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
4505 | then pack them all together. We do a little better in that we allow | |
4506 | them in words, longs, etc. and we'll pack them in target byte order | |
4507 | for you. | |
4508 | ||
47eebc20 | 4509 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
4510 | entirely fit, put it in the next unit. Overflowing the bitfield is |
4511 | explicitly *not* even a warning. The bitwidth should be considered | |
4512 | a "mask". | |
4513 | ||
4514 | To use this function the tc-XXX.h file should define | |
4515 | BITFIELD_CONS_EXPRESSIONS. */ | |
4516 | ||
041ff4dd | 4517 | static void |
252b5132 RH |
4518 | parse_bitfield_cons (exp, nbytes) |
4519 | expressionS *exp; | |
4520 | unsigned int nbytes; | |
4521 | { | |
4522 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
4523 | char *hold = input_line_pointer; | |
4524 | ||
4525 | (void) expression (exp); | |
4526 | ||
4527 | if (*input_line_pointer == ':') | |
041ff4dd NC |
4528 | { |
4529 | /* Bitfields. */ | |
252b5132 RH |
4530 | long value = 0; |
4531 | ||
4532 | for (;;) | |
4533 | { | |
4534 | unsigned long width; | |
4535 | ||
4536 | if (*input_line_pointer != ':') | |
4537 | { | |
4538 | input_line_pointer = hold; | |
4539 | break; | |
041ff4dd | 4540 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
4541 | |
4542 | /* In the general case, we can't allow | |
4543 | full expressions with symbol | |
4544 | differences and such. The relocation | |
4545 | entries for symbols not defined in this | |
4546 | assembly would require arbitrary field | |
4547 | widths, positions, and masks which most | |
4548 | of our current object formats don't | |
4549 | support. | |
4550 | ||
4551 | In the specific case where a symbol | |
4552 | *is* defined in this assembly, we | |
4553 | *could* build fixups and track it, but | |
4554 | this could lead to confusion for the | |
4555 | backends. I'm lazy. I'll take any | |
4556 | SEG_ABSOLUTE. I think that means that | |
4557 | you can use a previous .set or | |
041ff4dd | 4558 | .equ type symbol. xoxorich. */ |
252b5132 RH |
4559 | |
4560 | if (exp->X_op == O_absent) | |
4561 | { | |
4562 | as_warn (_("using a bit field width of zero")); | |
4563 | exp->X_add_number = 0; | |
4564 | exp->X_op = O_constant; | |
041ff4dd | 4565 | } /* Implied zero width bitfield. */ |
252b5132 RH |
4566 | |
4567 | if (exp->X_op != O_constant) | |
4568 | { | |
4569 | *input_line_pointer = '\0'; | |
4570 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
4571 | *input_line_pointer = ':'; | |
4572 | demand_empty_rest_of_line (); | |
4573 | return; | |
041ff4dd | 4574 | } /* Too complex. */ |
252b5132 RH |
4575 | |
4576 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
4577 | { | |
4578 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
4579 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
4580 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 4581 | } /* Too big. */ |
252b5132 RH |
4582 | |
4583 | if (width > bits_available) | |
4584 | { | |
4585 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
4586 | input_line_pointer = hold; | |
4587 | exp->X_add_number = value; | |
4588 | break; | |
041ff4dd | 4589 | } /* Won't fit. */ |
252b5132 | 4590 | |
ef99799a KH |
4591 | /* Skip ':'. */ |
4592 | hold = ++input_line_pointer; | |
252b5132 RH |
4593 | |
4594 | (void) expression (exp); | |
4595 | if (exp->X_op != O_constant) | |
4596 | { | |
4597 | char cache = *input_line_pointer; | |
4598 | ||
4599 | *input_line_pointer = '\0'; | |
4600 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
4601 | *input_line_pointer = cache; | |
4602 | demand_empty_rest_of_line (); | |
4603 | return; | |
041ff4dd | 4604 | } /* Too complex. */ |
252b5132 RH |
4605 | |
4606 | value |= ((~(-1 << width) & exp->X_add_number) | |
4607 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
4608 | ||
4609 | if ((bits_available -= width) == 0 | |
4610 | || is_it_end_of_statement () | |
4611 | || *input_line_pointer != ',') | |
4612 | { | |
4613 | break; | |
041ff4dd | 4614 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4615 | |
4616 | hold = ++input_line_pointer; | |
4617 | (void) expression (exp); | |
041ff4dd | 4618 | } |
252b5132 RH |
4619 | |
4620 | exp->X_add_number = value; | |
4621 | exp->X_op = O_constant; | |
4622 | exp->X_unsigned = 1; | |
956a6ba3 | 4623 | exp->X_extrabit = 0; |
041ff4dd NC |
4624 | } |
4625 | } | |
252b5132 RH |
4626 | |
4627 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4628 | \f | |
4629 | /* Handle an MRI style string expression. */ | |
4630 | ||
abd63a32 | 4631 | #ifdef TC_M68K |
252b5132 | 4632 | static void |
62ebcb5c | 4633 | parse_mri_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4634 | { |
4635 | if (*input_line_pointer != '\'' | |
4636 | && (input_line_pointer[1] != '\'' | |
4637 | || (*input_line_pointer != 'A' | |
4638 | && *input_line_pointer != 'E'))) | |
1e539319 | 4639 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
252b5132 RH |
4640 | else |
4641 | { | |
4642 | unsigned int scan; | |
4643 | unsigned int result = 0; | |
4644 | ||
4645 | /* An MRI style string. Cut into as many bytes as will fit into | |
4646 | a nbyte chunk, left justify if necessary, and separate with | |
4647 | commas so we can try again later. */ | |
4648 | if (*input_line_pointer == 'A') | |
4649 | ++input_line_pointer; | |
4650 | else if (*input_line_pointer == 'E') | |
4651 | { | |
4652 | as_bad (_("EBCDIC constants are not supported")); | |
4653 | ++input_line_pointer; | |
4654 | } | |
4655 | ||
4656 | input_line_pointer++; | |
4657 | for (scan = 0; scan < nbytes; scan++) | |
4658 | { | |
4659 | if (*input_line_pointer == '\'') | |
4660 | { | |
4661 | if (input_line_pointer[1] == '\'') | |
4662 | { | |
4663 | input_line_pointer++; | |
4664 | } | |
4665 | else | |
4666 | break; | |
4667 | } | |
4668 | result = (result << 8) | (*input_line_pointer++); | |
4669 | } | |
4670 | ||
041ff4dd | 4671 | /* Left justify. */ |
252b5132 RH |
4672 | while (scan < nbytes) |
4673 | { | |
4674 | result <<= 8; | |
4675 | scan++; | |
4676 | } | |
f0e652b4 | 4677 | |
041ff4dd | 4678 | /* Create correct expression. */ |
252b5132 RH |
4679 | exp->X_op = O_constant; |
4680 | exp->X_add_number = result; | |
f0e652b4 | 4681 | |
041ff4dd | 4682 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4683 | if (input_line_pointer[0] != '\'' || |
4684 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4685 | { | |
4686 | input_line_pointer -= 2; | |
4687 | input_line_pointer[0] = ','; | |
4688 | input_line_pointer[1] = '\''; | |
4689 | } | |
4690 | else | |
4691 | input_line_pointer++; | |
4692 | } | |
4693 | } | |
abd63a32 | 4694 | #endif /* TC_M68K */ |
252b5132 RH |
4695 | \f |
4696 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4697 | ||
4698 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4699 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4700 | object file COUNT times. | |
4701 | ||
4702 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4703 | ||
4704 | static void | |
4705 | parse_repeat_cons (exp, nbytes) | |
4706 | expressionS *exp; | |
4707 | unsigned int nbytes; | |
4708 | { | |
4709 | expressionS count; | |
3d540e93 | 4710 | int i; |
252b5132 RH |
4711 | |
4712 | expression (exp); | |
4713 | ||
4714 | if (*input_line_pointer != ':') | |
4715 | { | |
4716 | /* No repeat count. */ | |
4717 | return; | |
4718 | } | |
4719 | ||
4720 | ++input_line_pointer; | |
4721 | expression (&count); | |
4722 | if (count.X_op != O_constant | |
4723 | || count.X_add_number <= 0) | |
4724 | { | |
0e389e77 | 4725 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4726 | return; |
4727 | } | |
4728 | ||
4729 | /* The cons function is going to output this expression once. So we | |
4730 | output it count - 1 times. */ | |
4731 | for (i = count.X_add_number - 1; i > 0; i--) | |
4732 | emit_expr (exp, nbytes); | |
4733 | } | |
4734 | ||
4735 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4736 | \f | |
4737 | /* Parse a floating point number represented as a hex constant. This | |
4738 | permits users to specify the exact bits they want in the floating | |
4739 | point number. */ | |
4740 | ||
4741 | static int | |
39e6acbd | 4742 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4743 | { |
4744 | int length; | |
4745 | int i; | |
4746 | ||
4747 | switch (float_type) | |
4748 | { | |
4749 | case 'f': | |
4750 | case 'F': | |
4751 | case 's': | |
4752 | case 'S': | |
4753 | length = 4; | |
4754 | break; | |
4755 | ||
4756 | case 'd': | |
4757 | case 'D': | |
4758 | case 'r': | |
4759 | case 'R': | |
4760 | length = 8; | |
4761 | break; | |
4762 | ||
4763 | case 'x': | |
4764 | case 'X': | |
4765 | length = 12; | |
4766 | break; | |
4767 | ||
4768 | case 'p': | |
4769 | case 'P': | |
4770 | length = 12; | |
4771 | break; | |
4772 | ||
4773 | default: | |
0e389e77 | 4774 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4775 | return -1; |
4776 | } | |
4777 | ||
4778 | /* It would be nice if we could go through expression to parse the | |
4779 | hex constant, but if we get a bignum it's a pain to sort it into | |
4780 | the buffer correctly. */ | |
4781 | i = 0; | |
4782 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4783 | { | |
4784 | int d; | |
4785 | ||
4786 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4787 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4788 | if (*input_line_pointer == '_') |
4789 | { | |
4790 | ++input_line_pointer; | |
4791 | continue; | |
4792 | } | |
4793 | ||
4794 | if (i >= length) | |
4795 | { | |
0e389e77 | 4796 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4797 | return -1; |
4798 | } | |
4799 | d = hex_value (*input_line_pointer) << 4; | |
4800 | ++input_line_pointer; | |
4801 | while (*input_line_pointer == '_') | |
4802 | ++input_line_pointer; | |
4803 | if (hex_p (*input_line_pointer)) | |
4804 | { | |
4805 | d += hex_value (*input_line_pointer); | |
4806 | ++input_line_pointer; | |
4807 | } | |
4808 | if (target_big_endian) | |
4809 | bytes[i] = d; | |
4810 | else | |
4811 | bytes[length - i - 1] = d; | |
4812 | ++i; | |
4813 | } | |
4814 | ||
4815 | if (i < length) | |
4816 | { | |
4817 | if (target_big_endian) | |
4818 | memset (bytes + i, 0, length - i); | |
4819 | else | |
4820 | memset (bytes, 0, length - i); | |
4821 | } | |
4822 | ||
4823 | return length; | |
4824 | } | |
4825 | ||
d6415f6c | 4826 | /* float_cons() |
f0e652b4 | 4827 | |
041ff4dd NC |
4828 | CONStruct some more frag chars of .floats .ffloats etc. |
4829 | Makes 0 or more new frags. | |
4830 | If need_pass_2 == 1, no frags are emitted. | |
4831 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4832 | |
041ff4dd NC |
4833 | A floating constant is defined by atof_generic(), except it is preceded |
4834 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4835 | reading, I decided to be incompatible. This always tries to give you | |
4836 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4837 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4838 | a choice of 2 flavours of noise according to which of 2 floating-point |
4839 | scanners you directed AS to use. | |
f0e652b4 | 4840 | |
041ff4dd | 4841 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4842 | |
4843 | void | |
39e6acbd | 4844 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4845 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4846 | { |
3d540e93 | 4847 | char *p; |
041ff4dd | 4848 | int length; /* Number of chars in an object. */ |
3d540e93 | 4849 | char *err; /* Error from scanning floating literal. */ |
252b5132 RH |
4850 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4851 | ||
4852 | if (is_it_end_of_statement ()) | |
4853 | { | |
4854 | demand_empty_rest_of_line (); | |
4855 | return; | |
4856 | } | |
4857 | ||
4858 | #ifdef md_flush_pending_output | |
4859 | md_flush_pending_output (); | |
4860 | #endif | |
4861 | ||
cc3f603a JM |
4862 | #ifdef md_cons_align |
4863 | md_cons_align (1); | |
4864 | #endif | |
4865 | ||
252b5132 RH |
4866 | do |
4867 | { | |
041ff4dd | 4868 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4869 | SKIP_WHITESPACE (); |
4870 | ||
4871 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4872 | letter is legal. Someone may invent a "z" format and this routine |
4873 | has no use for such information. Lusers beware: you get | |
4874 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4875 | if (input_line_pointer[0] == '0' |
3882b010 | 4876 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4877 | input_line_pointer += 2; |
4878 | ||
4879 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4880 | point with the exact digits specified. */ |
252b5132 RH |
4881 | if (input_line_pointer[0] == ':') |
4882 | { | |
4883 | ++input_line_pointer; | |
4884 | length = hex_float (float_type, temp); | |
4885 | if (length < 0) | |
4886 | { | |
4887 | ignore_rest_of_line (); | |
4888 | return; | |
4889 | } | |
4890 | } | |
4891 | else | |
4892 | { | |
4893 | err = md_atof (float_type, temp, &length); | |
4894 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4895 | know (err != NULL || length > 0); |
252b5132 RH |
4896 | if (err) |
4897 | { | |
0e389e77 | 4898 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4899 | ignore_rest_of_line (); |
4900 | return; | |
4901 | } | |
4902 | } | |
4903 | ||
4904 | if (!need_pass_2) | |
4905 | { | |
4906 | int count; | |
4907 | ||
4908 | count = 1; | |
4909 | ||
4910 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4911 | if (*input_line_pointer == ':') | |
4912 | { | |
4913 | expressionS count_exp; | |
4914 | ||
4915 | ++input_line_pointer; | |
4916 | expression (&count_exp); | |
f0e652b4 | 4917 | |
252b5132 RH |
4918 | if (count_exp.X_op != O_constant |
4919 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4920 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4921 | else |
4922 | count = count_exp.X_add_number; | |
4923 | } | |
4924 | #endif | |
4925 | ||
4926 | while (--count >= 0) | |
4927 | { | |
4928 | p = frag_more (length); | |
4929 | memcpy (p, temp, (unsigned int) length); | |
4930 | } | |
4931 | } | |
4932 | SKIP_WHITESPACE (); | |
4933 | } | |
4934 | while (*input_line_pointer++ == ','); | |
4935 | ||
041ff4dd NC |
4936 | /* Put terminator back into stream. */ |
4937 | --input_line_pointer; | |
252b5132 | 4938 | demand_empty_rest_of_line (); |
041ff4dd | 4939 | } |
252b5132 | 4940 | \f |
041ff4dd | 4941 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4942 | |
4943 | static inline int | |
39e6acbd | 4944 | sizeof_sleb128 (offsetT value) |
252b5132 | 4945 | { |
3d540e93 NC |
4946 | int size = 0; |
4947 | unsigned byte; | |
252b5132 RH |
4948 | |
4949 | do | |
4950 | { | |
4951 | byte = (value & 0x7f); | |
4952 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4953 | Fortunately, we can structure things so that the extra work reduces | |
4954 | to a noop on systems that do things "properly". */ | |
4955 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4956 | size += 1; | |
4957 | } | |
4958 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4959 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4960 | ||
4961 | return size; | |
4962 | } | |
4963 | ||
4964 | static inline int | |
39e6acbd | 4965 | sizeof_uleb128 (valueT value) |
252b5132 | 4966 | { |
3d540e93 | 4967 | int size = 0; |
252b5132 RH |
4968 | |
4969 | do | |
4970 | { | |
252b5132 RH |
4971 | value >>= 7; |
4972 | size += 1; | |
4973 | } | |
4974 | while (value != 0); | |
4975 | ||
4976 | return size; | |
4977 | } | |
4978 | ||
4979 | int | |
39e6acbd | 4980 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4981 | { |
4982 | if (sign) | |
4983 | return sizeof_sleb128 ((offsetT) value); | |
4984 | else | |
4985 | return sizeof_uleb128 (value); | |
4986 | } | |
4987 | ||
4988 | /* Output a LEB128 value. */ | |
4989 | ||
4990 | static inline int | |
39e6acbd | 4991 | output_sleb128 (char *p, offsetT value) |
252b5132 | 4992 | { |
3d540e93 NC |
4993 | char *orig = p; |
4994 | int more; | |
252b5132 RH |
4995 | |
4996 | do | |
4997 | { | |
4998 | unsigned byte = (value & 0x7f); | |
4999 | ||
5000 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5001 | Fortunately, we can structure things so that the extra work reduces | |
5002 | to a noop on systems that do things "properly". */ | |
5003 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5004 | ||
5005 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
5006 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5007 | if (more) | |
5008 | byte |= 0x80; | |
5009 | ||
5010 | *p++ = byte; | |
5011 | } | |
5012 | while (more); | |
5013 | ||
5014 | return p - orig; | |
5015 | } | |
5016 | ||
5017 | static inline int | |
39e6acbd | 5018 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
5019 | { |
5020 | char *orig = p; | |
5021 | ||
5022 | do | |
5023 | { | |
5024 | unsigned byte = (value & 0x7f); | |
5025 | value >>= 7; | |
5026 | if (value != 0) | |
5027 | /* More bytes to follow. */ | |
5028 | byte |= 0x80; | |
5029 | ||
5030 | *p++ = byte; | |
5031 | } | |
5032 | while (value != 0); | |
5033 | ||
5034 | return p - orig; | |
5035 | } | |
5036 | ||
5037 | int | |
39e6acbd | 5038 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
5039 | { |
5040 | if (sign) | |
5041 | return output_sleb128 (p, (offsetT) value); | |
5042 | else | |
5043 | return output_uleb128 (p, value); | |
5044 | } | |
5045 | ||
5046 | /* Do the same for bignums. We combine sizeof with output here in that | |
5047 | we don't output for NULL values of P. It isn't really as critical as | |
5048 | for "normal" values that this be streamlined. */ | |
5049 | ||
6d4d30bb | 5050 | static inline int |
39e6acbd | 5051 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
5052 | { |
5053 | char *orig = p; | |
5054 | valueT val = 0; | |
5055 | int loaded = 0; | |
5056 | unsigned byte; | |
5057 | ||
5058 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
5059 | while (size > 1 |
5060 | && bignum[size - 1] == LITTLENUM_MASK | |
5061 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
5062 | size--; |
5063 | ||
5064 | do | |
5065 | { | |
e5604d79 RS |
5066 | /* OR in the next part of the littlenum. */ |
5067 | val |= (*bignum << loaded); | |
5068 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
5069 | size--; | |
5070 | bignum++; | |
5071 | ||
5072 | /* Add bytes until there are less than 7 bits left in VAL | |
5073 | or until every non-sign bit has been written. */ | |
5074 | do | |
252b5132 | 5075 | { |
e5604d79 RS |
5076 | byte = val & 0x7f; |
5077 | loaded -= 7; | |
5078 | val >>= 7; | |
5079 | if (size > 0 | |
5080 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 5081 | byte |= 0x80; |
e5604d79 RS |
5082 | |
5083 | if (orig) | |
5084 | *p = byte; | |
5085 | p++; | |
252b5132 | 5086 | } |
e5604d79 RS |
5087 | while ((byte & 0x80) != 0 && loaded >= 7); |
5088 | } | |
5089 | while (size > 0); | |
252b5132 | 5090 | |
e5604d79 RS |
5091 | /* Mop up any left-over bits (of which there will be less than 7). */ |
5092 | if ((byte & 0x80) != 0) | |
5093 | { | |
5094 | /* Sign-extend VAL. */ | |
5095 | if (val & (1 << (loaded - 1))) | |
29798047 | 5096 | val |= ~0U << loaded; |
252b5132 | 5097 | if (orig) |
e5604d79 | 5098 | *p = val & 0x7f; |
252b5132 RH |
5099 | p++; |
5100 | } | |
252b5132 RH |
5101 | |
5102 | return p - orig; | |
5103 | } | |
5104 | ||
6d4d30bb | 5105 | static inline int |
39e6acbd | 5106 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
5107 | { |
5108 | char *orig = p; | |
5109 | valueT val = 0; | |
5110 | int loaded = 0; | |
5111 | unsigned byte; | |
5112 | ||
5113 | /* Strip leading zeros off the bignum. */ | |
5114 | /* XXX: Is this needed? */ | |
041ff4dd | 5115 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
5116 | size--; |
5117 | ||
5118 | do | |
5119 | { | |
5120 | if (loaded < 7 && size > 0) | |
5121 | { | |
5122 | val |= (*bignum << loaded); | |
5123 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5124 | size--; | |
5125 | bignum++; | |
5126 | } | |
5127 | ||
5128 | byte = val & 0x7f; | |
5129 | loaded -= 7; | |
5130 | val >>= 7; | |
5131 | ||
5132 | if (size > 0 || val) | |
5133 | byte |= 0x80; | |
5134 | ||
5135 | if (orig) | |
5136 | *p = byte; | |
5137 | p++; | |
5138 | } | |
5139 | while (byte & 0x80); | |
5140 | ||
5141 | return p - orig; | |
5142 | } | |
5143 | ||
6d4d30bb | 5144 | static int |
39e6acbd | 5145 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
5146 | { |
5147 | if (sign) | |
5148 | return output_big_sleb128 (p, bignum, size); | |
5149 | else | |
5150 | return output_big_uleb128 (p, bignum, size); | |
5151 | } | |
5152 | ||
5153 | /* Generate the appropriate fragments for a given expression to emit a | |
5154 | leb128 value. */ | |
5155 | ||
87c245cc | 5156 | static void |
39e6acbd | 5157 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5158 | { |
5159 | operatorT op = exp->X_op; | |
b7712f8d | 5160 | unsigned int nbytes; |
252b5132 RH |
5161 | |
5162 | if (op == O_absent || op == O_illegal) | |
5163 | { | |
5164 | as_warn (_("zero assumed for missing expression")); | |
5165 | exp->X_add_number = 0; | |
5166 | op = O_constant; | |
5167 | } | |
5168 | else if (op == O_big && exp->X_add_number <= 0) | |
5169 | { | |
0e389e77 | 5170 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5171 | exp->X_add_number = 0; |
5172 | op = O_constant; | |
5173 | } | |
5174 | else if (op == O_register) | |
5175 | { | |
5176 | as_warn (_("register value used as expression")); | |
5177 | op = O_constant; | |
5178 | } | |
e5604d79 RS |
5179 | else if (op == O_constant |
5180 | && sign | |
956a6ba3 | 5181 | && (exp->X_add_number < 0) == !exp->X_extrabit) |
e5604d79 RS |
5182 | { |
5183 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5184 | doesn't reflect the sign of the original value. Convert EXP | |
5185 | to a correctly-extended bignum instead. */ | |
956a6ba3 | 5186 | convert_to_bignum (exp, exp->X_extrabit); |
e5604d79 RS |
5187 | op = O_big; |
5188 | } | |
252b5132 | 5189 | |
67a659f6 RH |
5190 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5191 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5192 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5193 | if (check_eh_frame (exp, &nbytes)) |
5194 | abort (); | |
5195 | ||
371b7465 RH |
5196 | /* Let the backend know that subsequent data may be byte aligned. */ |
5197 | #ifdef md_cons_align | |
5198 | md_cons_align (1); | |
5199 | #endif | |
5200 | ||
252b5132 RH |
5201 | if (op == O_constant) |
5202 | { | |
5203 | /* If we've got a constant, emit the thing directly right now. */ | |
5204 | ||
5205 | valueT value = exp->X_add_number; | |
5206 | int size; | |
5207 | char *p; | |
5208 | ||
5209 | size = sizeof_leb128 (value, sign); | |
5210 | p = frag_more (size); | |
5211 | output_leb128 (p, value, sign); | |
5212 | } | |
5213 | else if (op == O_big) | |
5214 | { | |
5215 | /* O_big is a different sort of constant. */ | |
5216 | ||
5217 | int size; | |
5218 | char *p; | |
5219 | ||
5220 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
5221 | p = frag_more (size); | |
5222 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
5223 | } | |
5224 | else | |
5225 | { | |
041ff4dd | 5226 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5227 | resolve things later. */ |
5228 | ||
041ff4dd | 5229 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5230 | make_expr_symbol (exp), 0, (char *) NULL); |
5231 | } | |
5232 | } | |
5233 | ||
5234 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5235 | ||
5236 | void | |
39e6acbd | 5237 | s_leb128 (int sign) |
252b5132 RH |
5238 | { |
5239 | expressionS exp; | |
5240 | ||
00bbdfe7 BW |
5241 | #ifdef md_flush_pending_output |
5242 | md_flush_pending_output (); | |
5243 | #endif | |
5244 | ||
041ff4dd NC |
5245 | do |
5246 | { | |
5247 | expression (&exp); | |
5248 | emit_leb128_expr (&exp, sign); | |
5249 | } | |
5250 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5251 | |
5252 | input_line_pointer--; | |
5253 | demand_empty_rest_of_line (); | |
5254 | } | |
5255 | \f | |
38a57ae7 NC |
5256 | static void |
5257 | stringer_append_char (int c, int bitsize) | |
5258 | { | |
5259 | if (!target_big_endian) | |
5260 | FRAG_APPEND_1_CHAR (c); | |
5261 | ||
5262 | switch (bitsize) | |
5263 | { | |
5264 | case 64: | |
5265 | FRAG_APPEND_1_CHAR (0); | |
5266 | FRAG_APPEND_1_CHAR (0); | |
5267 | FRAG_APPEND_1_CHAR (0); | |
5268 | FRAG_APPEND_1_CHAR (0); | |
5269 | /* Fall through. */ | |
5270 | case 32: | |
5271 | FRAG_APPEND_1_CHAR (0); | |
5272 | FRAG_APPEND_1_CHAR (0); | |
5273 | /* Fall through. */ | |
5274 | case 16: | |
5275 | FRAG_APPEND_1_CHAR (0); | |
5276 | /* Fall through. */ | |
5277 | case 8: | |
5278 | break; | |
5279 | default: | |
5280 | /* Called with invalid bitsize argument. */ | |
5281 | abort (); | |
5282 | break; | |
5283 | } | |
5284 | if (target_big_endian) | |
5285 | FRAG_APPEND_1_CHAR (c); | |
5286 | } | |
5287 | ||
5288 | /* Worker to do .ascii etc statements. | |
5289 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5290 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5291 | check it. |
5292 | Checks for end-of-line. | |
5293 | BITS_APPENDZERO says how many bits are in a target char. | |
5294 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5295 | |
5296 | void | |
38a57ae7 | 5297 | stringer (int bits_appendzero) |
252b5132 | 5298 | { |
38a57ae7 NC |
5299 | const int bitsize = bits_appendzero & ~7; |
5300 | const int append_zero = bits_appendzero & 1; | |
5301 | unsigned int c; | |
87975d2a | 5302 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5303 | char *start; |
87975d2a | 5304 | #endif |
252b5132 RH |
5305 | |
5306 | #ifdef md_flush_pending_output | |
5307 | md_flush_pending_output (); | |
5308 | #endif | |
5309 | ||
cc3f603a JM |
5310 | #ifdef md_cons_align |
5311 | md_cons_align (1); | |
5312 | #endif | |
5313 | ||
041ff4dd NC |
5314 | /* The following awkward logic is to parse ZERO or more strings, |
5315 | comma separated. Recall a string expression includes spaces | |
5316 | before the opening '\"' and spaces after the closing '\"'. | |
5317 | We fake a leading ',' if there is (supposed to be) | |
5318 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5319 | if (is_it_end_of_statement ()) |
5320 | { | |
041ff4dd NC |
5321 | c = 0; /* Skip loop. */ |
5322 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5323 | } |
5324 | else | |
5325 | { | |
041ff4dd | 5326 | c = ','; /* Do loop. */ |
252b5132 | 5327 | } |
8ac9ba6c NC |
5328 | /* If we have been switched into the abs_section then we |
5329 | will not have an obstack onto which we can hang strings. */ | |
5330 | if (now_seg == absolute_section) | |
5331 | { | |
5332 | as_bad (_("strings must be placed into a section")); | |
5333 | c = 0; | |
5334 | ignore_rest_of_line (); | |
5335 | } | |
d6415f6c | 5336 | |
252b5132 RH |
5337 | while (c == ',' || c == '<' || c == '"') |
5338 | { | |
5339 | SKIP_WHITESPACE (); | |
5340 | switch (*input_line_pointer) | |
5341 | { | |
5342 | case '\"': | |
041ff4dd | 5343 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5344 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5345 | start = input_line_pointer; |
87975d2a | 5346 | #endif |
38a57ae7 | 5347 | |
252b5132 | 5348 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5349 | stringer_append_char (c, bitsize); |
5350 | ||
252b5132 | 5351 | if (append_zero) |
38a57ae7 NC |
5352 | stringer_append_char (0, bitsize); |
5353 | ||
252b5132 RH |
5354 | know (input_line_pointer[-1] == '\"'); |
5355 | ||
87975d2a | 5356 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5357 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5358 | will emit .string with a filename in the .debug section |
5359 | after a sequence of constants. See the comment in | |
5360 | emit_expr for the sequence. emit_expr will set | |
5361 | dwarf_file_string to non-zero if this string might be a | |
5362 | source file name. */ | |
252b5132 RH |
5363 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5364 | dwarf_file_string = 0; | |
5365 | else if (dwarf_file_string) | |
5366 | { | |
5367 | c = input_line_pointer[-1]; | |
5368 | input_line_pointer[-1] = '\0'; | |
5369 | listing_source_file (start); | |
5370 | input_line_pointer[-1] = c; | |
5371 | } | |
252b5132 RH |
5372 | #endif |
5373 | ||
5374 | break; | |
5375 | case '<': | |
5376 | input_line_pointer++; | |
5377 | c = get_single_number (); | |
38a57ae7 | 5378 | stringer_append_char (c, bitsize); |
252b5132 | 5379 | if (*input_line_pointer != '>') |
38a57ae7 NC |
5380 | as_bad (_("expected <nn>")); |
5381 | ||
252b5132 RH |
5382 | input_line_pointer++; |
5383 | break; | |
5384 | case ',': | |
5385 | input_line_pointer++; | |
5386 | break; | |
5387 | } | |
5388 | SKIP_WHITESPACE (); | |
5389 | c = *input_line_pointer; | |
5390 | } | |
5391 | ||
5392 | demand_empty_rest_of_line (); | |
38a57ae7 | 5393 | } |
252b5132 RH |
5394 | \f |
5395 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5396 | high bits set. We'll probably also have trouble with | |
5397 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5398 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5399 | |
041ff4dd | 5400 | unsigned int |
39e6acbd | 5401 | next_char_of_string (void) |
252b5132 | 5402 | { |
3d540e93 | 5403 | unsigned int c; |
252b5132 RH |
5404 | |
5405 | c = *input_line_pointer++ & CHAR_MASK; | |
5406 | switch (c) | |
5407 | { | |
5408 | case '\"': | |
5409 | c = NOT_A_CHAR; | |
5410 | break; | |
5411 | ||
5412 | case '\n': | |
0e389e77 | 5413 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5414 | bump_line_counters (); |
5415 | break; | |
5416 | ||
5417 | #ifndef NO_STRING_ESCAPES | |
5418 | case '\\': | |
5419 | switch (c = *input_line_pointer++) | |
5420 | { | |
5421 | case 'b': | |
5422 | c = '\b'; | |
5423 | break; | |
5424 | ||
5425 | case 'f': | |
5426 | c = '\f'; | |
5427 | break; | |
5428 | ||
5429 | case 'n': | |
5430 | c = '\n'; | |
5431 | break; | |
5432 | ||
5433 | case 'r': | |
5434 | c = '\r'; | |
5435 | break; | |
5436 | ||
5437 | case 't': | |
5438 | c = '\t'; | |
5439 | break; | |
5440 | ||
5441 | case 'v': | |
5442 | c = '\013'; | |
5443 | break; | |
5444 | ||
5445 | case '\\': | |
5446 | case '"': | |
041ff4dd | 5447 | break; /* As itself. */ |
252b5132 RH |
5448 | |
5449 | case '0': | |
5450 | case '1': | |
5451 | case '2': | |
5452 | case '3': | |
5453 | case '4': | |
5454 | case '5': | |
5455 | case '6': | |
5456 | case '7': | |
5457 | case '8': | |
5458 | case '9': | |
5459 | { | |
5460 | long number; | |
5461 | int i; | |
5462 | ||
041ff4dd | 5463 | for (i = 0, number = 0; |
3882b010 | 5464 | ISDIGIT (c) && i < 3; |
041ff4dd | 5465 | c = *input_line_pointer++, i++) |
252b5132 RH |
5466 | { |
5467 | number = number * 8 + c - '0'; | |
5468 | } | |
f0e652b4 | 5469 | |
252b5132 RH |
5470 | c = number & 0xff; |
5471 | } | |
5472 | --input_line_pointer; | |
5473 | break; | |
5474 | ||
5475 | case 'x': | |
5476 | case 'X': | |
5477 | { | |
5478 | long number; | |
5479 | ||
5480 | number = 0; | |
5481 | c = *input_line_pointer++; | |
3882b010 | 5482 | while (ISXDIGIT (c)) |
252b5132 | 5483 | { |
3882b010 | 5484 | if (ISDIGIT (c)) |
252b5132 | 5485 | number = number * 16 + c - '0'; |
3882b010 | 5486 | else if (ISUPPER (c)) |
252b5132 RH |
5487 | number = number * 16 + c - 'A' + 10; |
5488 | else | |
5489 | number = number * 16 + c - 'a' + 10; | |
5490 | c = *input_line_pointer++; | |
5491 | } | |
5492 | c = number & 0xff; | |
5493 | --input_line_pointer; | |
5494 | } | |
5495 | break; | |
5496 | ||
5497 | case '\n': | |
041ff4dd | 5498 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5499 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5500 | c = '\n'; |
5501 | bump_line_counters (); | |
5502 | break; | |
5503 | ||
5504 | default: | |
5505 | ||
5506 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5507 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5508 | c = '?'; |
5509 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5510 | ||
5511 | break; | |
041ff4dd | 5512 | } |
252b5132 RH |
5513 | break; |
5514 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
5515 | ||
5516 | default: | |
5517 | break; | |
041ff4dd | 5518 | } |
252b5132 | 5519 | return (c); |
041ff4dd | 5520 | } |
252b5132 RH |
5521 | \f |
5522 | static segT | |
3d540e93 | 5523 | get_segmented_expression (expressionS *expP) |
252b5132 | 5524 | { |
3d540e93 | 5525 | segT retval; |
252b5132 RH |
5526 | |
5527 | retval = expression (expP); | |
5528 | if (expP->X_op == O_illegal | |
5529 | || expP->X_op == O_absent | |
5530 | || expP->X_op == O_big) | |
5531 | { | |
0e389e77 | 5532 | as_bad (_("expected address expression")); |
252b5132 RH |
5533 | expP->X_op = O_constant; |
5534 | expP->X_add_number = 0; | |
5535 | retval = absolute_section; | |
5536 | } | |
5537 | return retval; | |
5538 | } | |
5539 | ||
041ff4dd | 5540 | static segT |
3d540e93 | 5541 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5542 | { |
259af69e | 5543 | segT retval = get_segmented_expression (expP); |
252b5132 | 5544 | |
259af69e | 5545 | if (retval == undefined_section) |
252b5132 RH |
5546 | { |
5547 | /* There is no easy way to extract the undefined symbol from the | |
5548 | expression. */ | |
5549 | if (expP->X_add_symbol != NULL | |
5550 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5551 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5552 | S_GET_NAME (expP->X_add_symbol)); | |
5553 | else | |
5554 | as_warn (_("some symbol undefined; zero assumed")); | |
5555 | retval = absolute_section; | |
5556 | expP->X_op = O_constant; | |
5557 | expP->X_add_number = 0; | |
5558 | } | |
259af69e | 5559 | return retval; |
041ff4dd | 5560 | } |
252b5132 | 5561 | |
041ff4dd | 5562 | char /* Return terminator. */ |
39e6acbd | 5563 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5564 | { |
5565 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5566 | *val_pointer = (long) get_absolute_expression (); | |
5567 | return (*input_line_pointer++); | |
5568 | } | |
5569 | \f | |
041ff4dd NC |
5570 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5571 | Give a warning if that happens. */ | |
5572 | ||
252b5132 | 5573 | char * |
39e6acbd | 5574 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5575 | { |
3d540e93 | 5576 | char *s; |
252b5132 RH |
5577 | |
5578 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5579 | { | |
3d540e93 | 5580 | int len; |
252b5132 RH |
5581 | |
5582 | for (len = *len_pointer; len > 0; len--) | |
5583 | { | |
5584 | if (*s == 0) | |
5585 | { | |
5586 | s = 0; | |
5587 | len = 1; | |
5588 | *len_pointer = 0; | |
0e389e77 | 5589 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5590 | } |
5591 | } | |
5592 | } | |
f0e652b4 | 5593 | |
252b5132 RH |
5594 | return s; |
5595 | } | |
5596 | \f | |
041ff4dd NC |
5597 | /* Demand string, but return a safe (=private) copy of the string. |
5598 | Return NULL if we can't read a string here. */ | |
5599 | ||
252b5132 | 5600 | char * |
39e6acbd | 5601 | demand_copy_string (int *lenP) |
252b5132 | 5602 | { |
3d540e93 NC |
5603 | unsigned int c; |
5604 | int len; | |
252b5132 RH |
5605 | char *retval; |
5606 | ||
5607 | len = 0; | |
5608 | SKIP_WHITESPACE (); | |
5609 | if (*input_line_pointer == '\"') | |
5610 | { | |
041ff4dd | 5611 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5612 | |
5613 | while (is_a_char (c = next_char_of_string ())) | |
5614 | { | |
5615 | obstack_1grow (¬es, c); | |
5616 | len++; | |
5617 | } | |
5618 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5619 | null terminated string. */ |
252b5132 | 5620 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5621 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5622 | } |
5623 | else | |
5624 | { | |
c95b35a9 | 5625 | as_bad (_("missing string")); |
252b5132 RH |
5626 | retval = NULL; |
5627 | ignore_rest_of_line (); | |
5628 | } | |
5629 | *lenP = len; | |
5630 | return (retval); | |
041ff4dd | 5631 | } |
252b5132 | 5632 | \f |
041ff4dd | 5633 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5634 | |
041ff4dd | 5635 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5636 | |
041ff4dd NC |
5637 | Out: 1 if input_line_pointer->end-of-line. */ |
5638 | ||
5639 | int | |
39e6acbd | 5640 | is_it_end_of_statement (void) |
252b5132 RH |
5641 | { |
5642 | SKIP_WHITESPACE (); | |
5643 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5644 | } |
252b5132 | 5645 | |
041ff4dd | 5646 | void |
39e6acbd | 5647 | equals (char *sym_name, int reassign) |
252b5132 | 5648 | { |
252b5132 | 5649 | char *stop = NULL; |
fb25138b | 5650 | char stopc = 0; |
252b5132 RH |
5651 | |
5652 | input_line_pointer++; | |
5653 | if (*input_line_pointer == '=') | |
5654 | input_line_pointer++; | |
9497f5ac NC |
5655 | if (reassign < 0 && *input_line_pointer == '=') |
5656 | input_line_pointer++; | |
252b5132 RH |
5657 | |
5658 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5659 | input_line_pointer++; | |
5660 | ||
5661 | if (flag_mri) | |
5662 | stop = mri_comment_field (&stopc); | |
5663 | ||
9497f5ac | 5664 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5665 | |
5666 | if (flag_mri) | |
31d20a21 AM |
5667 | { |
5668 | demand_empty_rest_of_line (); | |
5669 | mri_comment_end (stop, stopc); | |
5670 | } | |
041ff4dd | 5671 | } |
252b5132 | 5672 | |
7e005732 NC |
5673 | /* .incbin -- include a file verbatim at the current location. */ |
5674 | ||
5675 | void | |
39e6acbd | 5676 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5677 | { |
5678 | FILE * binfile; | |
5679 | char * path; | |
5680 | char * filename; | |
5681 | char * binfrag; | |
5682 | long skip = 0; | |
5683 | long count = 0; | |
5684 | long bytes; | |
5685 | int len; | |
5686 | ||
5687 | #ifdef md_flush_pending_output | |
5688 | md_flush_pending_output (); | |
5689 | #endif | |
5690 | ||
cc3f603a JM |
5691 | #ifdef md_cons_align |
5692 | md_cons_align (1); | |
5693 | #endif | |
5694 | ||
7e005732 NC |
5695 | SKIP_WHITESPACE (); |
5696 | filename = demand_copy_string (& len); | |
5697 | if (filename == NULL) | |
5698 | return; | |
5699 | ||
5700 | SKIP_WHITESPACE (); | |
5701 | ||
5702 | /* Look for optional skip and count. */ | |
5703 | if (* input_line_pointer == ',') | |
5704 | { | |
5705 | ++ input_line_pointer; | |
5706 | skip = get_absolute_expression (); | |
5707 | ||
5708 | SKIP_WHITESPACE (); | |
5709 | ||
5710 | if (* input_line_pointer == ',') | |
5711 | { | |
5712 | ++ input_line_pointer; | |
5713 | ||
5714 | count = get_absolute_expression (); | |
5715 | if (count == 0) | |
5716 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5717 | ||
5718 | SKIP_WHITESPACE (); | |
5719 | } | |
5720 | } | |
5721 | ||
5722 | demand_empty_rest_of_line (); | |
5723 | ||
5724 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5725 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5726 | if (binfile == NULL) |
5727 | { | |
5728 | int i; | |
5729 | ||
1e9cc1c2 | 5730 | path = (char *) xmalloc ((unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5731 | |
5732 | for (i = 0; i < include_dir_count; i++) | |
5733 | { | |
5734 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5735 | ||
f740e790 | 5736 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5737 | if (binfile != NULL) |
5738 | break; | |
5739 | } | |
5740 | ||
5741 | if (binfile == NULL) | |
5742 | as_bad (_("file not found: %s"), filename); | |
5743 | } | |
5744 | else | |
5745 | path = xstrdup (filename); | |
5746 | ||
5747 | if (binfile) | |
5748 | { | |
f740e790 NC |
5749 | long file_len; |
5750 | ||
7e005732 NC |
5751 | register_dependency (path); |
5752 | ||
5753 | /* Compute the length of the file. */ | |
5754 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5755 | { | |
5756 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5757 | goto done; | |
5758 | } | |
f740e790 | 5759 | file_len = ftell (binfile); |
7e005732 | 5760 | |
c556cc9c | 5761 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5762 | if (count == 0) |
c556cc9c | 5763 | count = file_len - skip; |
7e005732 | 5764 | |
c556cc9c | 5765 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5766 | { |
c556cc9c | 5767 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5768 | skip, count, file_len); |
7e005732 NC |
5769 | goto done; |
5770 | } | |
5771 | ||
5772 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5773 | { | |
5774 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5775 | goto done; | |
5776 | } | |
5777 | ||
5778 | /* Allocate frag space and store file contents in it. */ | |
5779 | binfrag = frag_more (count); | |
5780 | ||
5781 | bytes = fread (binfrag, 1, count, binfile); | |
5782 | if (bytes < count) | |
5783 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5784 | path, bytes, count); | |
5785 | } | |
5786 | done: | |
5787 | if (binfile != NULL) | |
5788 | fclose (binfile); | |
5789 | if (path) | |
5790 | free (path); | |
5791 | } | |
5792 | ||
041ff4dd | 5793 | /* .include -- include a file at this point. */ |
252b5132 | 5794 | |
041ff4dd | 5795 | void |
39e6acbd | 5796 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5797 | { |
252b5132 RH |
5798 | char *filename; |
5799 | int i; | |
1e9cc1c2 | 5800 | FILE *try_file; |
252b5132 RH |
5801 | char *path; |
5802 | ||
041ff4dd | 5803 | if (!flag_m68k_mri) |
252b5132 RH |
5804 | { |
5805 | filename = demand_copy_string (&i); | |
5806 | if (filename == NULL) | |
5807 | { | |
5808 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5809 | called ignore_rest_of_line. */ |
252b5132 RH |
5810 | return; |
5811 | } | |
5812 | } | |
5813 | else | |
5814 | { | |
5815 | SKIP_WHITESPACE (); | |
5816 | i = 0; | |
041ff4dd | 5817 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5818 | && *input_line_pointer != ' ' |
5819 | && *input_line_pointer != '\t') | |
5820 | { | |
5821 | obstack_1grow (¬es, *input_line_pointer); | |
5822 | ++input_line_pointer; | |
5823 | ++i; | |
5824 | } | |
f0e652b4 | 5825 | |
252b5132 | 5826 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5827 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5828 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5829 | ++input_line_pointer; |
5830 | } | |
f0e652b4 | 5831 | |
252b5132 | 5832 | demand_empty_rest_of_line (); |
1e9cc1c2 | 5833 | path = (char *) xmalloc ((unsigned long) i |
fa94de6b | 5834 | + include_dir_maxlen + 5 /* slop */ ); |
f0e652b4 | 5835 | |
252b5132 RH |
5836 | for (i = 0; i < include_dir_count; i++) |
5837 | { | |
5838 | strcpy (path, include_dirs[i]); | |
5839 | strcat (path, "/"); | |
5840 | strcat (path, filename); | |
1e9cc1c2 | 5841 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 5842 | { |
1e9cc1c2 | 5843 | fclose (try_file); |
252b5132 RH |
5844 | goto gotit; |
5845 | } | |
5846 | } | |
f0e652b4 | 5847 | |
252b5132 RH |
5848 | free (path); |
5849 | path = filename; | |
5850 | gotit: | |
041ff4dd | 5851 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5852 | register_dependency (path); |
9f10757c | 5853 | input_scrub_insert_file (path); |
041ff4dd | 5854 | } |
252b5132 | 5855 | |
041ff4dd | 5856 | void |
39e6acbd | 5857 | add_include_dir (char *path) |
252b5132 RH |
5858 | { |
5859 | int i; | |
5860 | ||
5861 | if (include_dir_count == 0) | |
5862 | { | |
5863 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5864 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5865 | include_dir_count = 2; |
5866 | } | |
5867 | else | |
5868 | { | |
5869 | include_dir_count++; | |
041ff4dd | 5870 | include_dirs = |
b2e951ec NC |
5871 | (char **) xrealloc (include_dirs, |
5872 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5873 | } |
5874 | ||
041ff4dd | 5875 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5876 | |
5877 | i = strlen (path); | |
5878 | if (i > include_dir_maxlen) | |
5879 | include_dir_maxlen = i; | |
041ff4dd | 5880 | } |
252b5132 RH |
5881 | \f |
5882 | /* Output debugging information to denote the source file. */ | |
5883 | ||
5884 | static void | |
39e6acbd | 5885 | generate_file_debug (void) |
252b5132 RH |
5886 | { |
5887 | if (debug_type == DEBUG_STABS) | |
5888 | stabs_generate_asm_file (); | |
5889 | } | |
5890 | ||
5891 | /* Output line number debugging information for the current source line. */ | |
5892 | ||
5893 | void | |
39e6acbd | 5894 | generate_lineno_debug (void) |
252b5132 | 5895 | { |
252b5132 RH |
5896 | switch (debug_type) |
5897 | { | |
5898 | case DEBUG_UNSPECIFIED: | |
5899 | case DEBUG_NONE: | |
4dc7ead9 | 5900 | case DEBUG_DWARF: |
252b5132 RH |
5901 | break; |
5902 | case DEBUG_STABS: | |
5903 | stabs_generate_asm_lineno (); | |
5904 | break; | |
5905 | case DEBUG_ECOFF: | |
5906 | ecoff_generate_asm_lineno (); | |
5907 | break; | |
252b5132 | 5908 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5909 | /* ??? We could here indicate to dwarf2dbg.c that something |
5910 | has changed. However, since there is additional backend | |
5911 | support that is required (calling dwarf2_emit_insn), we | |
5912 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5913 | break; |
5914 | } | |
5915 | } | |
5916 | ||
5917 | /* Output debugging information to mark a function entry point or end point. | |
5918 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5919 | ||
5920 | void | |
39e6acbd | 5921 | s_func (int end_p) |
252b5132 RH |
5922 | { |
5923 | do_s_func (end_p, NULL); | |
5924 | } | |
5925 | ||
5926 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5927 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5928 | ||
87c245cc | 5929 | static void |
39e6acbd | 5930 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5931 | { |
5932 | /* Record the current function so that we can issue an error message for | |
5933 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5934 | arguments. */ | |
5935 | static char *current_name; | |
5936 | static char *current_label; | |
5937 | ||
5938 | if (end_p) | |
5939 | { | |
5940 | if (current_name == NULL) | |
5941 | { | |
5942 | as_bad (_("missing .func")); | |
5943 | ignore_rest_of_line (); | |
5944 | return; | |
5945 | } | |
5946 | ||
5947 | if (debug_type == DEBUG_STABS) | |
5948 | stabs_generate_asm_endfunc (current_name, current_label); | |
5949 | ||
5950 | current_name = current_label = NULL; | |
5951 | } | |
5952 | else /* ! end_p */ | |
5953 | { | |
041ff4dd NC |
5954 | char *name, *label; |
5955 | char delim1, delim2; | |
252b5132 RH |
5956 | |
5957 | if (current_name != NULL) | |
5958 | { | |
5959 | as_bad (_(".endfunc missing for previous .func")); | |
5960 | ignore_rest_of_line (); | |
5961 | return; | |
5962 | } | |
5963 | ||
d02603dc | 5964 | delim1 = get_symbol_name (& name); |
252b5132 RH |
5965 | name = xstrdup (name); |
5966 | *input_line_pointer = delim1; | |
d02603dc | 5967 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
5968 | if (*input_line_pointer != ',') |
5969 | { | |
5970 | if (default_prefix) | |
05f4ab67 AM |
5971 | { |
5972 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
5973 | as_fatal ("%s", xstrerror (errno)); | |
5974 | } | |
252b5132 RH |
5975 | else |
5976 | { | |
7be1c489 | 5977 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
5978 | /* Missing entry point, use function's name with the leading |
5979 | char prepended. */ | |
5980 | if (leading_char) | |
05f4ab67 AM |
5981 | { |
5982 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
5983 | as_fatal ("%s", xstrerror (errno)); | |
5984 | } | |
252b5132 RH |
5985 | else |
5986 | label = name; | |
5987 | } | |
5988 | } | |
5989 | else | |
5990 | { | |
5991 | ++input_line_pointer; | |
5992 | SKIP_WHITESPACE (); | |
d02603dc | 5993 | delim2 = get_symbol_name (& label); |
252b5132 | 5994 | label = xstrdup (label); |
d02603dc | 5995 | restore_line_pointer (delim2); |
252b5132 RH |
5996 | } |
5997 | ||
5998 | if (debug_type == DEBUG_STABS) | |
5999 | stabs_generate_asm_func (name, label); | |
6000 | ||
6001 | current_name = name; | |
6002 | current_label = label; | |
6003 | } | |
6004 | ||
6005 | demand_empty_rest_of_line (); | |
6006 | } | |
6007 | \f | |
fa94de6b RM |
6008 | #ifdef HANDLE_BUNDLE |
6009 | ||
6010 | void | |
6011 | s_bundle_align_mode (int arg ATTRIBUTE_UNUSED) | |
6012 | { | |
6013 | unsigned int align = get_absolute_expression (); | |
6014 | SKIP_WHITESPACE (); | |
6015 | demand_empty_rest_of_line (); | |
6016 | ||
6017 | if (align > (unsigned int) TC_ALIGN_LIMIT) | |
6018 | as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"), | |
6019 | (unsigned int) TC_ALIGN_LIMIT); | |
6020 | ||
6021 | if (bundle_lock_frag != NULL) | |
6022 | { | |
6023 | as_bad (_("cannot change .bundle_align_mode inside .bundle_lock")); | |
6024 | return; | |
6025 | } | |
6026 | ||
6027 | bundle_align_p2 = align; | |
6028 | } | |
6029 | ||
6030 | void | |
6031 | s_bundle_lock (int arg ATTRIBUTE_UNUSED) | |
6032 | { | |
6033 | demand_empty_rest_of_line (); | |
6034 | ||
6035 | if (bundle_align_p2 == 0) | |
6036 | { | |
6037 | as_bad (_(".bundle_lock is meaningless without .bundle_align_mode")); | |
6038 | return; | |
6039 | } | |
6040 | ||
d416e51d | 6041 | if (bundle_lock_depth == 0) |
fa94de6b | 6042 | { |
d416e51d RM |
6043 | bundle_lock_frchain = frchain_now; |
6044 | bundle_lock_frag = start_bundle (); | |
fa94de6b | 6045 | } |
d416e51d | 6046 | ++bundle_lock_depth; |
fa94de6b RM |
6047 | } |
6048 | ||
6049 | void | |
6050 | s_bundle_unlock (int arg ATTRIBUTE_UNUSED) | |
6051 | { | |
6052 | unsigned int size; | |
6053 | ||
6054 | demand_empty_rest_of_line (); | |
6055 | ||
6056 | if (bundle_lock_frag == NULL) | |
6057 | { | |
6058 | as_bad (_(".bundle_unlock without preceding .bundle_lock")); | |
6059 | return; | |
6060 | } | |
6061 | ||
6062 | gas_assert (bundle_align_p2 > 0); | |
6063 | ||
d416e51d RM |
6064 | gas_assert (bundle_lock_depth > 0); |
6065 | if (--bundle_lock_depth > 0) | |
6066 | return; | |
6067 | ||
fa94de6b RM |
6068 | size = pending_bundle_size (bundle_lock_frag); |
6069 | ||
6070 | if (size > (1U << bundle_align_p2)) | |
6071 | as_bad (_(".bundle_lock sequence is %u bytes, but bundle size only %u"), | |
6072 | size, 1 << bundle_align_p2); | |
6073 | else | |
6074 | finish_bundle (bundle_lock_frag, size); | |
6075 | ||
6076 | bundle_lock_frag = NULL; | |
6077 | bundle_lock_frchain = NULL; | |
6078 | } | |
6079 | ||
6080 | #endif /* HANDLE_BUNDLE */ | |
6081 | \f | |
041ff4dd | 6082 | void |
39e6acbd | 6083 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6084 | { |
40a4d956 | 6085 | ignore_rest_of_line (); |
252b5132 RH |
6086 | } |
6087 | ||
252b5132 | 6088 | void |
39e6acbd | 6089 | read_print_statistics (FILE *file) |
252b5132 RH |
6090 | { |
6091 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
6092 | } | |
6093 | ||
041ff4dd NC |
6094 | /* Inserts the given line into the input stream. |
6095 | ||
9f10757c TW |
6096 | This call avoids macro/conditionals nesting checking, since the contents of |
6097 | the line are assumed to replace the contents of a line already scanned. | |
6098 | ||
47eebc20 | 6099 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
6100 | called by md_start_line_hook(). The given line is assumed to already be |
6101 | properly scrubbed. */ | |
6102 | ||
6103 | void | |
39e6acbd | 6104 | input_scrub_insert_line (const char *line) |
9f10757c TW |
6105 | { |
6106 | sb newline; | |
d2ae702c L |
6107 | size_t len = strlen (line); |
6108 | sb_build (&newline, len); | |
6109 | sb_add_buffer (&newline, line, len); | |
9f10757c TW |
6110 | input_scrub_include_sb (&newline, input_line_pointer, 0); |
6111 | sb_kill (&newline); | |
6112 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6113 | } | |
6114 | ||
6115 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 6116 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
6117 | |
6118 | void | |
39e6acbd | 6119 | input_scrub_insert_file (char *path) |
9f10757c TW |
6120 | { |
6121 | input_scrub_include_file (path, input_line_pointer); | |
6122 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6123 | } | |
40a4d956 JB |
6124 | |
6125 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
6126 | ||
6127 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
6128 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
6129 | #endif | |
6130 | ||
6131 | static char * | |
7592cfd7 NC |
6132 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
6133 | int in_macro) | |
40a4d956 JB |
6134 | { |
6135 | char inquote = '\0'; | |
6136 | int inescape = 0; | |
6137 | ||
6138 | while (!is_end_of_line[(unsigned char) *s] | |
6139 | || (inquote && !ISCNTRL (*s)) | |
6140 | || (inquote == '\'' && flag_mri) | |
6141 | #ifdef TC_EOL_IN_INSN | |
6142 | || (insn && TC_EOL_IN_INSN (s)) | |
6143 | #endif | |
7592cfd7 NC |
6144 | /* PR 6926: When we are parsing the body of a macro the sequence |
6145 | \@ is special - it refers to the invocation count. If the @ | |
6146 | character happens to be registered as a line-separator character | |
6147 | by the target, then the is_end_of_line[] test above will have | |
6148 | returned true, but we need to ignore the line separating | |
6149 | semantics in this particular case. */ | |
6150 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
6151 | ) |
6152 | { | |
6153 | if (mri_string && *s == '\'') | |
6154 | inquote ^= *s; | |
6155 | else if (inescape) | |
6156 | inescape = 0; | |
6157 | else if (*s == '\\') | |
6158 | inescape = 1; | |
6159 | else if (!inquote | |
6160 | ? *s == '"' | |
6161 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
6162 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
6163 | #endif | |
6164 | : *s == inquote) | |
6165 | inquote ^= *s; | |
6166 | ++s; | |
6167 | } | |
6168 | if (inquote) | |
6169 | as_warn (_("missing closing `%c'"), inquote); | |
e74211b6 | 6170 | if (inescape && !ignore_input ()) |
40a4d956 JB |
6171 | as_warn (_("stray `\\'")); |
6172 | return s; | |
6173 | } | |
6174 | ||
6175 | char * | |
6176 | find_end_of_line (char *s, int mri_string) | |
6177 | { | |
7592cfd7 | 6178 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 6179 | } |