Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
250d07de | 2 | Copyright (C) 1986-2021 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). |
33eaf5de | 22 | But then, GNU isn't supposed to run on your machine anyway. |
041ff4dd | 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 | 42 | |
d27aad4e AC |
43 | #include <limits.h> |
44 | ||
252b5132 | 45 | #ifndef TC_START_LABEL |
2e57ce7b | 46 | #define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR) (NEXT_CHAR == ':') |
252b5132 RH |
47 | #endif |
48 | ||
8684e216 HPN |
49 | /* Set by the object-format or the target. */ |
50 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 51 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 52 | do \ |
d6415f6c AM |
53 | { \ |
54 | if ((SIZE) >= 8) \ | |
55 | (P2VAR) = 3; \ | |
56 | else if ((SIZE) >= 4) \ | |
57 | (P2VAR) = 2; \ | |
58 | else if ((SIZE) >= 2) \ | |
59 | (P2VAR) = 1; \ | |
60 | else \ | |
61 | (P2VAR) = 0; \ | |
041ff4dd NC |
62 | } \ |
63 | while (0) | |
8684e216 HPN |
64 | #endif |
65 | ||
041ff4dd | 66 | char *input_line_pointer; /*->next char of source file to parse. */ |
5b7c81bd | 67 | bool input_from_string = false; |
252b5132 RH |
68 | |
69 | #if BITS_PER_CHAR != 8 | |
70 | /* The following table is indexed by[(char)] and will break if | |
71 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
72 | die horribly; | |
73 | #endif | |
74 | ||
75 | #ifndef LEX_AT | |
252b5132 RH |
76 | #define LEX_AT 0 |
77 | #endif | |
78 | ||
79 | #ifndef LEX_BR | |
80 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
81 | #define LEX_BR 0 | |
82 | #endif | |
83 | ||
84 | #ifndef LEX_PCT | |
85 | /* The Delta 68k assembler permits % inside label names. */ | |
86 | #define LEX_PCT 0 | |
87 | #endif | |
88 | ||
89 | #ifndef LEX_QM | |
90 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
91 | #define LEX_QM 0 | |
92 | #endif | |
93 | ||
58b5739a | 94 | #ifndef LEX_HASH |
800eeca4 JW |
95 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
96 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
97 | #define LEX_HASH 0 |
98 | #endif | |
99 | ||
252b5132 | 100 | #ifndef LEX_DOLLAR |
252b5132 RH |
101 | #define LEX_DOLLAR 3 |
102 | #endif | |
103 | ||
104 | #ifndef LEX_TILDE | |
105 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
106 | #define LEX_TILDE 0 | |
107 | #endif | |
108 | ||
041ff4dd | 109 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 110 | char lex_type[256] = { |
252b5132 RH |
111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
112 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 113 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
114 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
115 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
116 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
117 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 118 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
124 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
125 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
126 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
127 | }; | |
128 | ||
041ff4dd | 129 | /* In: a character. |
d67ffd56 L |
130 | Out: 1 if this character ends a line. |
131 | 2 if this character is a line separator. */ | |
ef99799a | 132 | char is_end_of_line[256] = { |
252b5132 | 133 | #ifdef CR_EOL |
b75c0c92 | 134 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 135 | #else |
b75c0c92 | 136 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 137 | #endif |
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, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
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, /* */ | |
0b545448 AM |
150 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
151 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
152 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 153 | }; |
252b5132 | 154 | |
a8a3b3b2 | 155 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
156 | char original_case_string[128]; |
157 | #endif | |
158 | ||
041ff4dd | 159 | /* Functions private to this file. */ |
252b5132 | 160 | |
041ff4dd NC |
161 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
162 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 163 | |
041ff4dd NC |
164 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
165 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
166 | internals manual. */ | |
252b5132 RH |
167 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
168 | ||
041ff4dd | 169 | /* Variables for handling include file directory table. */ |
252b5132 | 170 | |
041ff4dd | 171 | /* Table of pointers to directories to search for .include's. */ |
e0471c16 | 172 | const char **include_dirs; |
041ff4dd NC |
173 | |
174 | /* How many are in the table. */ | |
175 | int include_dir_count; | |
176 | ||
177 | /* Length of longest in table. */ | |
178 | int include_dir_maxlen = 1; | |
252b5132 RH |
179 | |
180 | #ifndef WORKING_DOT_WORD | |
181 | struct broken_word *broken_words; | |
182 | int new_broken_words; | |
183 | #endif | |
184 | ||
185 | /* The current offset into the absolute section. We don't try to | |
186 | build frags in the absolute section, since no data can be stored | |
187 | there. We just keep track of the current offset. */ | |
188 | addressT abs_section_offset; | |
189 | ||
190 | /* If this line had an MRI style label, it is stored in this variable. | |
191 | This is used by some of the MRI pseudo-ops. */ | |
192 | symbolS *line_label; | |
193 | ||
194 | /* This global variable is used to support MRI common sections. We | |
195 | translate such sections into a common symbol. This variable is | |
196 | non-NULL when we are in an MRI common section. */ | |
197 | symbolS *mri_common_symbol; | |
198 | ||
199 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
200 | need to align to an even byte boundary unless the next pseudo-op is | |
201 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
202 | may be needed. */ | |
203 | static int mri_pending_align; | |
204 | ||
205 | #ifndef NO_LISTING | |
206 | #ifdef OBJ_ELF | |
207 | /* This variable is set to be non-zero if the next string we see might | |
208 | be the name of the source file in DWARF debugging information. See | |
209 | the comment in emit_expr for the format we look for. */ | |
210 | static int dwarf_file_string; | |
211 | #endif | |
212 | #endif | |
213 | ||
fa94de6b RM |
214 | /* If the target defines the md_frag_max_var hook then we know |
215 | enough to implement the .bundle_align_mode features. */ | |
216 | #ifdef md_frag_max_var | |
217 | # define HANDLE_BUNDLE | |
218 | #endif | |
219 | ||
220 | #ifdef HANDLE_BUNDLE | |
221 | /* .bundle_align_mode sets this. Normally it's zero. When nonzero, | |
222 | it's the exponent of the bundle size, and aligned instruction bundle | |
223 | mode is in effect. */ | |
224 | static unsigned int bundle_align_p2; | |
225 | ||
226 | /* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets | |
227 | bundle_lock_frag to frag_now and then starts a new frag with | |
228 | frag_align_code. At the same time, bundle_lock_frain gets frchain_now, | |
229 | so that .bundle_unlock can verify that we didn't change segments. | |
230 | .bundle_unlock resets both to NULL. If we detect a bundling violation, | |
231 | then we reset bundle_lock_frchain to NULL as an indicator that we've | |
232 | already diagnosed the error with as_bad and don't need a cascade of | |
233 | redundant errors, but bundle_lock_frag remains set to indicate that | |
234 | we are expecting to see .bundle_unlock. */ | |
235 | static fragS *bundle_lock_frag; | |
236 | static frchainS *bundle_lock_frchain; | |
d416e51d RM |
237 | |
238 | /* This is incremented by .bundle_lock and decremented by .bundle_unlock, | |
239 | to allow nesting. */ | |
240 | static unsigned int bundle_lock_depth; | |
fa94de6b RM |
241 | #endif |
242 | ||
87c245cc | 243 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd | 244 | static void s_align (int, int); |
caa32fe5 | 245 | static void s_altmacro (int); |
057f53c1 | 246 | static void s_bad_end (int); |
05e9452c | 247 | static void s_reloc (int); |
39e6acbd | 248 | static int hex_float (int, char *); |
39e6acbd KH |
249 | static segT get_known_segmented_expression (expressionS * expP); |
250 | static void pobegin (void); | |
39a45edc | 251 | static size_t get_non_macro_line_sb (sb *); |
39e6acbd | 252 | static void generate_file_debug (void); |
7592cfd7 | 253 | static char *_find_end_of_line (char *, int, int, int); |
252b5132 | 254 | \f |
252b5132 | 255 | void |
39e6acbd | 256 | read_begin (void) |
252b5132 RH |
257 | { |
258 | const char *p; | |
259 | ||
260 | pobegin (); | |
261 | obj_read_begin_hook (); | |
262 | ||
263 | /* Something close -- but not too close -- to a multiple of 1024. | |
264 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
265 | obstack_begin (¬es, chunksize); | |
266 | obstack_begin (&cond_obstack, chunksize); | |
267 | ||
2e6976a8 DG |
268 | #ifndef tc_line_separator_chars |
269 | #define tc_line_separator_chars line_separator_chars | |
270 | #endif | |
041ff4dd | 271 | /* Use machine dependent syntax. */ |
2e6976a8 | 272 | for (p = tc_line_separator_chars; *p; p++) |
d67ffd56 | 273 | is_end_of_line[(unsigned char) *p] = 2; |
041ff4dd | 274 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
275 | |
276 | if (flag_mri) | |
277 | lex_type['?'] = 3; | |
278 | } | |
279 | \f | |
cc1bc22a | 280 | #ifndef TC_ADDRESS_BYTES |
cc1bc22a AM |
281 | #define TC_ADDRESS_BYTES address_bytes |
282 | ||
283 | static inline int | |
284 | address_bytes (void) | |
285 | { | |
286 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
287 | contain an address. */ | |
288 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
289 | n |= n >> 1; | |
290 | n |= n >> 2; | |
291 | n += 1; | |
292 | return n; | |
293 | } | |
294 | #endif | |
cc1bc22a | 295 | |
041ff4dd | 296 | /* Set up pseudo-op tables. */ |
252b5132 | 297 | |
32e4c1c2 ML |
298 | struct po_entry |
299 | { | |
300 | const char *poc_name; | |
301 | ||
302 | const pseudo_typeS *pop; | |
303 | }; | |
304 | ||
305 | typedef struct po_entry po_entry_t; | |
306 | ||
307 | /* Hash function for a po_entry. */ | |
308 | ||
309 | static hashval_t | |
310 | hash_po_entry (const void *e) | |
311 | { | |
312 | const po_entry_t *entry = (const po_entry_t *) e; | |
313 | return htab_hash_string (entry->poc_name); | |
314 | } | |
315 | ||
316 | /* Equality function for a po_entry. */ | |
317 | ||
318 | static int | |
319 | eq_po_entry (const void *a, const void *b) | |
320 | { | |
321 | const po_entry_t *ea = (const po_entry_t *) a; | |
322 | const po_entry_t *eb = (const po_entry_t *) b; | |
323 | ||
324 | return strcmp (ea->poc_name, eb->poc_name) == 0; | |
325 | } | |
326 | ||
327 | static po_entry_t * | |
328 | po_entry_alloc (const char *poc_name, const pseudo_typeS *pop) | |
329 | { | |
330 | po_entry_t *entry = XNEW (po_entry_t); | |
331 | entry->poc_name = poc_name; | |
332 | entry->pop = pop; | |
333 | return entry; | |
334 | } | |
335 | ||
336 | static const pseudo_typeS * | |
337 | po_entry_find (htab_t table, const char *poc_name) | |
338 | { | |
339 | po_entry_t needle = { poc_name, NULL }; | |
340 | po_entry_t *entry = htab_find (table, &needle); | |
341 | return entry != NULL ? entry->pop : NULL; | |
342 | } | |
343 | ||
344 | static struct htab *po_hash; | |
252b5132 | 345 | |
ef99799a | 346 | static const pseudo_typeS potable[] = { |
252b5132 RH |
347 | {"abort", s_abort, 0}, |
348 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 349 | {"altmacro", s_altmacro, 1}, |
38a57ae7 NC |
350 | {"ascii", stringer, 8+0}, |
351 | {"asciz", stringer, 8+1}, | |
252b5132 RH |
352 | {"balign", s_align_bytes, 0}, |
353 | {"balignw", s_align_bytes, -2}, | |
354 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 355 | /* block */ |
fa94de6b RM |
356 | #ifdef HANDLE_BUNDLE |
357 | {"bundle_align_mode", s_bundle_align_mode, 0}, | |
358 | {"bundle_lock", s_bundle_lock, 0}, | |
359 | {"bundle_unlock", s_bundle_unlock, 0}, | |
360 | #endif | |
252b5132 RH |
361 | {"byte", cons, 1}, |
362 | {"comm", s_comm, 0}, | |
363 | {"common", s_mri_common, 0}, | |
364 | {"common.s", s_mri_common, 1}, | |
365 | {"data", s_data, 0}, | |
366 | {"dc", cons, 2}, | |
cc1bc22a | 367 | {"dc.a", cons, 0}, |
252b5132 RH |
368 | {"dc.b", cons, 1}, |
369 | {"dc.d", float_cons, 'd'}, | |
370 | {"dc.l", cons, 4}, | |
371 | {"dc.s", float_cons, 'f'}, | |
372 | {"dc.w", cons, 2}, | |
373 | {"dc.x", float_cons, 'x'}, | |
374 | {"dcb", s_space, 2}, | |
375 | {"dcb.b", s_space, 1}, | |
376 | {"dcb.d", s_float_space, 'd'}, | |
377 | {"dcb.l", s_space, 4}, | |
378 | {"dcb.s", s_float_space, 'f'}, | |
379 | {"dcb.w", s_space, 2}, | |
380 | {"dcb.x", s_float_space, 'x'}, | |
381 | {"ds", s_space, 2}, | |
382 | {"ds.b", s_space, 1}, | |
383 | {"ds.d", s_space, 8}, | |
384 | {"ds.l", s_space, 4}, | |
385 | {"ds.p", s_space, 12}, | |
386 | {"ds.s", s_space, 4}, | |
387 | {"ds.w", s_space, 2}, | |
388 | {"ds.x", s_space, 12}, | |
389 | {"debug", s_ignore, 0}, | |
390 | #ifdef S_SET_DESC | |
391 | {"desc", s_desc, 0}, | |
392 | #endif | |
041ff4dd | 393 | /* dim */ |
252b5132 | 394 | {"double", float_cons, 'd'}, |
041ff4dd NC |
395 | /* dsect */ |
396 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
397 | {"else", s_else, 0}, |
398 | {"elsec", s_else, 0}, | |
3fd9f047 | 399 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
400 | {"end", s_end, 0}, |
401 | {"endc", s_endif, 0}, | |
402 | {"endfunc", s_func, 1}, | |
403 | {"endif", s_endif, 0}, | |
057f53c1 JB |
404 | {"endm", s_bad_end, 0}, |
405 | {"endr", s_bad_end, 1}, | |
041ff4dd | 406 | /* endef */ |
252b5132 RH |
407 | {"equ", s_set, 0}, |
408 | {"equiv", s_set, 1}, | |
9497f5ac | 409 | {"eqv", s_set, -1}, |
252b5132 | 410 | {"err", s_err, 0}, |
d190d046 | 411 | {"error", s_errwarn, 1}, |
252b5132 | 412 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
413 | /* extend */ |
414 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 | 415 | {"appfile", s_app_file, 1}, |
93e914b2 | 416 | {"appline", s_app_line, 1}, |
252b5132 RH |
417 | {"fail", s_fail, 0}, |
418 | {"file", s_app_file, 0}, | |
419 | {"fill", s_fill, 0}, | |
420 | {"float", float_cons, 'f'}, | |
421 | {"format", s_ignore, 0}, | |
422 | {"func", s_func, 0}, | |
423 | {"global", s_globl, 0}, | |
424 | {"globl", s_globl, 0}, | |
425 | {"hword", cons, 2}, | |
426 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 427 | {"ifb", s_ifb, 1}, |
252b5132 RH |
428 | {"ifc", s_ifc, 0}, |
429 | {"ifdef", s_ifdef, 0}, | |
430 | {"ifeq", s_if, (int) O_eq}, | |
431 | {"ifeqs", s_ifeqs, 0}, | |
432 | {"ifge", s_if, (int) O_ge}, | |
433 | {"ifgt", s_if, (int) O_gt}, | |
434 | {"ifle", s_if, (int) O_le}, | |
435 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 436 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
437 | {"ifnc", s_ifc, 1}, |
438 | {"ifndef", s_ifdef, 1}, | |
439 | {"ifne", s_if, (int) O_ne}, | |
440 | {"ifnes", s_ifeqs, 1}, | |
441 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 442 | {"incbin", s_incbin, 0}, |
252b5132 RH |
443 | {"include", s_include, 0}, |
444 | {"int", cons, 4}, | |
445 | {"irp", s_irp, 0}, | |
446 | {"irep", s_irp, 0}, | |
447 | {"irpc", s_irp, 1}, | |
448 | {"irepc", s_irp, 1}, | |
449 | {"lcomm", s_lcomm, 0}, | |
c2069bb2 | 450 | {"lflags", s_ignore, 0}, /* Listing flags. */ |
93e914b2 | 451 | {"linefile", s_app_line, 0}, |
252b5132 | 452 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 453 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
454 | {"llen", listing_psize, 1}, |
455 | {"long", cons, 4}, | |
456 | {"lsym", s_lsym, 0}, | |
457 | {"macro", s_macro, 0}, | |
458 | {"mexit", s_mexit, 0}, | |
459 | {"mri", s_mri, 0}, | |
460 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
461 | {"name", s_ignore, 0}, | |
caa32fe5 | 462 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 463 | {"noformat", s_ignore, 0}, |
041ff4dd | 464 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 | 465 | {"nopage", listing_nopage, 0}, |
b1766e7c | 466 | {"nop", s_nop, 0}, |
8f065d3b | 467 | {"nops", s_nops, 0}, |
252b5132 RH |
468 | {"octa", cons, 16}, |
469 | {"offset", s_struct, 0}, | |
470 | {"org", s_org, 0}, | |
471 | {"p2align", s_align_ptwo, 0}, | |
472 | {"p2alignw", s_align_ptwo, -2}, | |
473 | {"p2alignl", s_align_ptwo, -4}, | |
474 | {"page", listing_eject, 0}, | |
475 | {"plen", listing_psize, 0}, | |
476 | {"print", s_print, 0}, | |
041ff4dd | 477 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
478 | {"purgem", s_purgem, 0}, |
479 | {"quad", cons, 8}, | |
05e9452c | 480 | {"reloc", s_reloc, 0}, |
252b5132 RH |
481 | {"rep", s_rept, 0}, |
482 | {"rept", s_rept, 0}, | |
483 | {"rva", s_rva, 4}, | |
041ff4dd NC |
484 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
485 | /* scl */ | |
486 | /* sect */ | |
252b5132 RH |
487 | {"set", s_set, 0}, |
488 | {"short", cons, 2}, | |
489 | {"single", float_cons, 'f'}, | |
041ff4dd | 490 | /* size */ |
252b5132 RH |
491 | {"space", s_space, 0}, |
492 | {"skip", s_space, 0}, | |
493 | {"sleb128", s_leb128, 1}, | |
494 | {"spc", s_ignore, 0}, | |
495 | {"stabd", s_stab, 'd'}, | |
496 | {"stabn", s_stab, 'n'}, | |
497 | {"stabs", s_stab, 's'}, | |
38a57ae7 NC |
498 | {"string", stringer, 8+1}, |
499 | {"string8", stringer, 8+1}, | |
500 | {"string16", stringer, 16+1}, | |
501 | {"string32", stringer, 32+1}, | |
502 | {"string64", stringer, 64+1}, | |
252b5132 | 503 | {"struct", s_struct, 0}, |
041ff4dd | 504 | /* tag */ |
252b5132 RH |
505 | {"text", s_text, 0}, |
506 | ||
507 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
508 | won't be able to use it for a while -- probably a year or more. | |
509 | But once this has been released, check with gcc maintainers | |
510 | before deleting it or even changing the spelling. */ | |
511 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
512 | /* If we're folding case -- done for some targets, not necessarily | |
513 | all -- the above string in an input file will be converted to | |
514 | this one. Match it either way... */ | |
515 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
516 | ||
041ff4dd | 517 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 518 | {"ttl", listing_title, 0}, |
041ff4dd | 519 | /* type */ |
252b5132 | 520 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
521 | /* use */ |
522 | /* val */ | |
252b5132 RH |
523 | {"xcom", s_comm, 0}, |
524 | {"xdef", s_globl, 0}, | |
525 | {"xref", s_ignore, 0}, | |
526 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 527 | {"warning", s_errwarn, 0}, |
06e77878 | 528 | {"weakref", s_weakref, 0}, |
252b5132 RH |
529 | {"word", cons, 2}, |
530 | {"zero", s_space, 0}, | |
5fda40b2 MF |
531 | {"2byte", cons, 2}, |
532 | {"4byte", cons, 4}, | |
533 | {"8byte", cons, 8}, | |
041ff4dd | 534 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
535 | }; |
536 | ||
87c245cc BE |
537 | static offsetT |
538 | get_absolute_expr (expressionS *exp) | |
539 | { | |
9497f5ac | 540 | expression_and_evaluate (exp); |
9136aa49 | 541 | |
87c245cc BE |
542 | if (exp->X_op != O_constant) |
543 | { | |
544 | if (exp->X_op != O_absent) | |
545 | as_bad (_("bad or irreducible absolute expression")); | |
546 | exp->X_add_number = 0; | |
547 | } | |
548 | return exp->X_add_number; | |
549 | } | |
550 | ||
551 | offsetT | |
552 | get_absolute_expression (void) | |
553 | { | |
554 | expressionS exp; | |
555 | ||
556 | return get_absolute_expr (&exp); | |
557 | } | |
558 | ||
252b5132 RH |
559 | static int pop_override_ok = 0; |
560 | static const char *pop_table_name; | |
561 | ||
562 | void | |
39e6acbd | 563 | pop_insert (const pseudo_typeS *table) |
252b5132 | 564 | { |
252b5132 RH |
565 | const pseudo_typeS *pop; |
566 | for (pop = table; pop->poc_name; pop++) | |
567 | { | |
fe0e921f AM |
568 | po_entry_t *elt = po_entry_alloc (pop->poc_name, pop); |
569 | if (htab_insert (po_hash, elt, 0) != NULL) | |
570 | { | |
571 | free (elt); | |
572 | if (!pop_override_ok) | |
573 | as_fatal (_("error constructing %s pseudo-op table"), | |
574 | pop_table_name); | |
575 | } | |
252b5132 RH |
576 | } |
577 | } | |
578 | ||
579 | #ifndef md_pop_insert | |
580 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
581 | #endif | |
582 | ||
583 | #ifndef obj_pop_insert | |
584 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
585 | #endif | |
586 | ||
54cfded0 AM |
587 | #ifndef cfi_pop_insert |
588 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
589 | #endif | |
590 | ||
041ff4dd | 591 | static void |
39e6acbd | 592 | pobegin (void) |
252b5132 | 593 | { |
32e4c1c2 ML |
594 | po_hash = htab_create_alloc (16, hash_po_entry, eq_po_entry, NULL, |
595 | xcalloc, xfree); | |
252b5132 | 596 | |
041ff4dd | 597 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
598 | pop_table_name = "md"; |
599 | md_pop_insert (); | |
600 | ||
041ff4dd | 601 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
602 | pop_table_name = "obj"; |
603 | pop_override_ok = 1; | |
604 | obj_pop_insert (); | |
605 | ||
041ff4dd | 606 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
607 | pop_table_name = "standard"; |
608 | pop_insert (potable); | |
d6415f6c | 609 | |
d58a1929 | 610 | /* Now CFI ones. */ |
54cfded0 AM |
611 | pop_table_name = "cfi"; |
612 | pop_override_ok = 1; | |
613 | cfi_pop_insert (); | |
252b5132 RH |
614 | } |
615 | \f | |
e74211b6 | 616 | #define HANDLE_CONDITIONAL_ASSEMBLY(num_read) \ |
252b5132 RH |
617 | if (ignore_input ()) \ |
618 | { \ | |
e74211b6 JB |
619 | char *eol = find_end_of_line (input_line_pointer - (num_read), \ |
620 | flag_m68k_mri); \ | |
40a4d956 JB |
621 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
622 | && eol >= buffer_limit) \ | |
623 | ? buffer_limit \ | |
624 | : eol + 1; \ | |
252b5132 RH |
625 | continue; \ |
626 | } | |
627 | ||
252b5132 RH |
628 | /* This function is used when scrubbing the characters between #APP |
629 | and #NO_APP. */ | |
630 | ||
631 | static char *scrub_string; | |
632 | static char *scrub_string_end; | |
633 | ||
39a45edc AM |
634 | static size_t |
635 | scrub_from_string (char *buf, size_t buflen) | |
252b5132 | 636 | { |
39a45edc | 637 | size_t copy; |
2b47531b ILT |
638 | |
639 | copy = scrub_string_end - scrub_string; | |
640 | if (copy > buflen) | |
641 | copy = buflen; | |
642 | memcpy (buf, scrub_string, copy); | |
643 | scrub_string += copy; | |
644 | return copy; | |
252b5132 RH |
645 | } |
646 | ||
5e75c3ab JB |
647 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
648 | static int | |
649 | try_macro (char term, const char *line) | |
650 | { | |
651 | sb out; | |
652 | const char *err; | |
653 | macro_entry *macro; | |
654 | ||
655 | if (check_macro (line, &out, &err, ¯o)) | |
656 | { | |
657 | if (err != NULL) | |
658 | as_bad ("%s", err); | |
659 | *input_line_pointer++ = term; | |
660 | input_scrub_include_sb (&out, | |
661 | input_line_pointer, 1); | |
662 | sb_kill (&out); | |
663 | buffer_limit = | |
664 | input_scrub_next_buffer (&input_line_pointer); | |
665 | #ifdef md_macro_info | |
666 | md_macro_info (macro); | |
667 | #endif | |
668 | return 1; | |
669 | } | |
670 | return 0; | |
671 | } | |
672 | ||
fa94de6b RM |
673 | #ifdef HANDLE_BUNDLE |
674 | /* Start a new instruction bundle. Returns the rs_align_code frag that | |
675 | will be used to align the new bundle. */ | |
676 | static fragS * | |
677 | start_bundle (void) | |
678 | { | |
679 | fragS *frag = frag_now; | |
680 | ||
681 | frag_align_code (0, 0); | |
682 | ||
683 | while (frag->fr_type != rs_align_code) | |
684 | frag = frag->fr_next; | |
685 | ||
686 | gas_assert (frag != frag_now); | |
687 | ||
688 | return frag; | |
689 | } | |
690 | ||
691 | /* Calculate the maximum size after relaxation of the region starting | |
692 | at the given frag and extending through frag_now (which is unfinished). */ | |
693 | static unsigned int | |
694 | pending_bundle_size (fragS *frag) | |
695 | { | |
696 | unsigned int offset = frag->fr_fix; | |
697 | unsigned int size = 0; | |
698 | ||
699 | gas_assert (frag != frag_now); | |
700 | gas_assert (frag->fr_type == rs_align_code); | |
701 | ||
702 | while (frag != frag_now) | |
703 | { | |
704 | /* This should only happen in what will later become an error case. */ | |
705 | if (frag == NULL) | |
706 | return 0; | |
707 | ||
708 | size += frag->fr_fix; | |
709 | if (frag->fr_type == rs_machine_dependent) | |
710 | size += md_frag_max_var (frag); | |
711 | ||
712 | frag = frag->fr_next; | |
713 | } | |
714 | ||
715 | gas_assert (frag == frag_now); | |
716 | size += frag_now_fix (); | |
717 | if (frag->fr_type == rs_machine_dependent) | |
718 | size += md_frag_max_var (frag); | |
719 | ||
720 | gas_assert (size >= offset); | |
721 | ||
722 | return size - offset; | |
723 | } | |
724 | ||
725 | /* Finish off the frag created to ensure bundle alignment. */ | |
726 | static void | |
727 | finish_bundle (fragS *frag, unsigned int size) | |
728 | { | |
729 | gas_assert (bundle_align_p2 > 0); | |
730 | gas_assert (frag->fr_type == rs_align_code); | |
731 | ||
732 | if (size > 1) | |
733 | { | |
734 | /* If there is more than a single byte, then we need to set up the | |
735 | alignment frag. Otherwise we leave it at its initial state from | |
736 | calling frag_align_code (0, 0), so that it does nothing. */ | |
737 | frag->fr_offset = bundle_align_p2; | |
738 | frag->fr_subtype = size - 1; | |
739 | } | |
740 | ||
741 | /* We do this every time rather than just in s_bundle_align_mode | |
742 | so that we catch any affected section without needing hooks all | |
743 | over for all paths that do section changes. It's cheap enough. */ | |
9136aa49 DG |
744 | if (bundle_align_p2 > OCTETS_PER_BYTE_POWER) |
745 | record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER); | |
fa94de6b RM |
746 | } |
747 | ||
748 | /* Assemble one instruction. This takes care of the bundle features | |
749 | around calling md_assemble. */ | |
750 | static void | |
751 | assemble_one (char *line) | |
752 | { | |
8d3eaee6 | 753 | fragS *insn_start_frag = NULL; |
fa94de6b RM |
754 | |
755 | if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now) | |
756 | { | |
757 | as_bad (_("cannot change section or subsection inside .bundle_lock")); | |
758 | /* Clearing this serves as a marker that we have already complained. */ | |
759 | bundle_lock_frchain = NULL; | |
760 | } | |
761 | ||
762 | if (bundle_lock_frchain == NULL && bundle_align_p2 > 0) | |
763 | insn_start_frag = start_bundle (); | |
764 | ||
765 | md_assemble (line); | |
766 | ||
767 | if (bundle_lock_frchain != NULL) | |
768 | { | |
769 | /* Make sure this hasn't pushed the locked sequence | |
770 | past the bundle size. */ | |
771 | unsigned int bundle_size = pending_bundle_size (bundle_lock_frag); | |
e54e9ac5 AM |
772 | if (bundle_size > 1U << bundle_align_p2) |
773 | as_bad (_ (".bundle_lock sequence at %u bytes, " | |
774 | "but .bundle_align_mode limit is %u bytes"), | |
fa94de6b RM |
775 | bundle_size, 1U << bundle_align_p2); |
776 | } | |
777 | else if (bundle_align_p2 > 0) | |
778 | { | |
779 | unsigned int insn_size = pending_bundle_size (insn_start_frag); | |
780 | ||
e54e9ac5 AM |
781 | if (insn_size > 1U << bundle_align_p2) |
782 | as_bad (_("single instruction is %u bytes long, " | |
783 | "but .bundle_align_mode limit is %u bytes"), | |
784 | insn_size, 1U << bundle_align_p2); | |
fa94de6b RM |
785 | |
786 | finish_bundle (insn_start_frag, insn_size); | |
787 | } | |
788 | } | |
789 | ||
790 | #else /* !HANDLE_BUNDLE */ | |
791 | ||
792 | # define assemble_one(line) md_assemble(line) | |
793 | ||
794 | #endif /* HANDLE_BUNDLE */ | |
795 | ||
5b7c81bd | 796 | static bool |
9136aa49 DG |
797 | in_bss (void) |
798 | { | |
fd361982 | 799 | flagword flags = bfd_section_flags (now_seg); |
9136aa49 DG |
800 | |
801 | return (flags & SEC_ALLOC) && !(flags & (SEC_LOAD | SEC_HAS_CONTENTS)); | |
802 | } | |
803 | ||
804 | /* Guts of .align directive: | |
805 | N is the power of two to which to align. A value of zero is accepted but | |
806 | ignored: the default alignment of the section will be at least this. | |
807 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
808 | LEN is the length of whatever FILL points to, if anything. If LEN is zero | |
809 | but FILL is not NULL then LEN is treated as if it were one. | |
810 | MAX is the maximum number of characters to skip when doing the alignment, | |
811 | or 0 if there is no maximum. */ | |
812 | ||
f86f5863 | 813 | void |
9136aa49 DG |
814 | do_align (unsigned int n, char *fill, unsigned int len, unsigned int max) |
815 | { | |
816 | if (now_seg == absolute_section || in_bss ()) | |
817 | { | |
818 | if (fill != NULL) | |
819 | while (len-- > 0) | |
820 | if (*fill++ != '\0') | |
821 | { | |
822 | if (now_seg == absolute_section) | |
823 | as_warn (_("ignoring fill value in absolute section")); | |
824 | else | |
825 | as_warn (_("ignoring fill value in section `%s'"), | |
826 | segment_name (now_seg)); | |
827 | break; | |
828 | } | |
829 | fill = NULL; | |
830 | len = 0; | |
831 | } | |
832 | ||
833 | #ifdef md_flush_pending_output | |
834 | md_flush_pending_output (); | |
835 | #endif | |
836 | ||
837 | #ifdef md_do_align | |
838 | md_do_align (n, fill, len, max, just_record_alignment); | |
839 | #endif | |
840 | ||
841 | /* Only make a frag if we HAVE to... */ | |
842 | if ((n > OCTETS_PER_BYTE_POWER) && !need_pass_2) | |
843 | { | |
844 | if (fill == NULL) | |
845 | { | |
846 | if (subseg_text_p (now_seg)) | |
847 | frag_align_code (n, max); | |
848 | else | |
849 | frag_align (n, 0, max); | |
850 | } | |
851 | else if (len <= 1) | |
852 | frag_align (n, *fill, max); | |
853 | else | |
854 | frag_align_pattern (n, fill, len, max); | |
855 | } | |
856 | ||
857 | #ifdef md_do_align | |
858 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL | |
859 | #endif | |
860 | ||
861 | if (n > OCTETS_PER_BYTE_POWER) | |
862 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); | |
863 | } | |
864 | ||
041ff4dd NC |
865 | /* We read the file, putting things into a web that represents what we |
866 | have been reading. */ | |
867 | void | |
e0471c16 | 868 | read_a_source_file (const char *name) |
252b5132 | 869 | { |
d02603dc NC |
870 | char nul_char; |
871 | char next_char; | |
91d6fa6a | 872 | char *s; /* String of symbol, '\0' appended. */ |
d27aad4e | 873 | long temp; |
32e4c1c2 | 874 | const pseudo_typeS *pop; |
252b5132 | 875 | |
4c400d5e AM |
876 | #ifdef WARN_COMMENTS |
877 | found_comment = 0; | |
878 | #endif | |
879 | ||
252b5132 RH |
880 | buffer = input_scrub_new_file (name); |
881 | ||
882 | listing_file (name); | |
883 | listing_newline (NULL); | |
884 | register_dependency (name); | |
885 | ||
886 | /* Generate debugging information before we've read anything in to denote | |
887 | this file as the "main" source file and not a subordinate one | |
888 | (e.g. N_SO vs N_SOL in stabs). */ | |
889 | generate_file_debug (); | |
890 | ||
891 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 892 | { /* We have another line to parse. */ |
5e75c3ab JB |
893 | #ifndef NO_LISTING |
894 | /* In order to avoid listing macro expansion lines with labels | |
895 | multiple times, keep track of which line was last issued. */ | |
896 | static char *last_eol; | |
897 | ||
898 | last_eol = NULL; | |
899 | #endif | |
252b5132 RH |
900 | while (input_line_pointer < buffer_limit) |
901 | { | |
5b7c81bd | 902 | bool was_new_line; |
041ff4dd | 903 | /* We have more of this buffer to parse. */ |
252b5132 | 904 | |
041ff4dd NC |
905 | /* We now have input_line_pointer->1st char of next line. |
906 | If input_line_pointer [-1] == '\n' then we just | |
907 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
908 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
909 | if (was_new_line) | |
252b5132 | 910 | { |
4a826962 | 911 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
912 | #ifdef md_start_line_hook |
913 | md_start_line_hook (); | |
914 | #endif | |
252b5132 RH |
915 | if (input_line_pointer[-1] == '\n') |
916 | bump_line_counters (); | |
f19df8f7 | 917 | } |
252b5132 | 918 | |
f19df8f7 AM |
919 | #ifndef NO_LISTING |
920 | /* If listing is on, and we are expanding a macro, then give | |
921 | the listing code the contents of the expanded line. */ | |
922 | if (listing) | |
923 | { | |
924 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
925 | { | |
926 | /* Find the end of the current expanded macro line. */ | |
927 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
928 | ||
929 | if (s != last_eol) | |
930 | { | |
931 | char *copy; | |
932 | int len; | |
933 | ||
934 | last_eol = s; | |
935 | /* Copy it for safe keeping. Also give an indication of | |
936 | how much macro nesting is involved at this point. */ | |
937 | len = s - input_line_pointer; | |
8860a416 | 938 | copy = XNEWVEC (char, len + macro_nest + 2); |
f19df8f7 AM |
939 | memset (copy, '>', macro_nest); |
940 | copy[macro_nest] = ' '; | |
941 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
942 | copy[macro_nest + 1 + len] = '\0'; | |
943 | ||
944 | /* Install the line with the listing facility. */ | |
945 | listing_newline (copy); | |
946 | } | |
947 | } | |
948 | else | |
949 | listing_newline (NULL); | |
950 | } | |
951 | #endif | |
952 | if (was_new_line) | |
953 | { | |
252b5132 RH |
954 | line_label = NULL; |
955 | ||
abd63a32 | 956 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 | 957 | { |
d02603dc | 958 | next_char = * input_line_pointer; |
252b5132 RH |
959 | /* Text at the start of a line must be a label, we |
960 | run down and stick a colon in. */ | |
d02603dc | 961 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 962 | { |
d02603dc | 963 | char *line_start; |
252b5132 RH |
964 | int mri_line_macro; |
965 | ||
e74211b6 | 966 | HANDLE_CONDITIONAL_ASSEMBLY (0); |
252b5132 | 967 | |
d02603dc NC |
968 | nul_char = get_symbol_name (& line_start); |
969 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
252b5132 RH |
970 | |
971 | /* In MRI mode, the EQU and MACRO pseudoops must | |
972 | be handled specially. */ | |
973 | mri_line_macro = 0; | |
974 | if (flag_m68k_mri) | |
975 | { | |
976 | char *rest = input_line_pointer + 1; | |
977 | ||
978 | if (*rest == ':') | |
979 | ++rest; | |
980 | if (*rest == ' ' || *rest == '\t') | |
981 | ++rest; | |
982 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
983 | || strncasecmp (rest, "SET", 3) == 0) | |
984 | && (rest[3] == ' ' || rest[3] == '\t')) | |
985 | { | |
986 | input_line_pointer = rest + 3; | |
987 | equals (line_start, | |
988 | strncasecmp (rest, "SET", 3) == 0); | |
989 | continue; | |
990 | } | |
991 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
992 | && (rest[5] == ' ' | |
993 | || rest[5] == '\t' | |
994 | || is_end_of_line[(unsigned char) rest[5]])) | |
995 | mri_line_macro = 1; | |
996 | } | |
997 | ||
998 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
999 | pseudo-op specially: we don't want to put the |
1000 | symbol in the symbol table. */ | |
041ff4dd | 1001 | if (!mri_line_macro |
a25c045a | 1002 | #ifdef TC_START_LABEL_WITHOUT_COLON |
2e57ce7b | 1003 | && TC_START_LABEL_WITHOUT_COLON (nul_char, next_char) |
a25c045a | 1004 | #endif |
ef99799a | 1005 | ) |
252b5132 RH |
1006 | line_label = colon (line_start); |
1007 | else | |
1008 | line_label = symbol_create (line_start, | |
1009 | absolute_section, | |
e01e1cee | 1010 | &zero_address_frag, 0); |
252b5132 | 1011 | |
d02603dc NC |
1012 | next_char = restore_line_pointer (nul_char); |
1013 | if (next_char == ':') | |
252b5132 RH |
1014 | input_line_pointer++; |
1015 | } | |
1016 | } | |
1017 | } | |
1018 | ||
47eebc20 | 1019 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
1020 | We expect a well-formed assembler statement. |
1021 | A "symbol-name:" is a statement. | |
f0e652b4 | 1022 | |
041ff4dd NC |
1023 | Depending on what compiler is used, the order of these tests |
1024 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
1025 | Each test is independent of all other tests at the (top) |
1026 | level. */ | |
1027 | do | |
d02603dc NC |
1028 | nul_char = next_char = *input_line_pointer++; |
1029 | while (next_char == '\t' || next_char == ' ' || next_char == '\f'); | |
252b5132 | 1030 | |
041ff4dd NC |
1031 | /* C is the 1st significant character. |
1032 | Input_line_pointer points after that character. */ | |
d02603dc | 1033 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 1034 | { |
d02603dc NC |
1035 | char *rest; |
1036 | ||
041ff4dd | 1037 | /* Want user-defined label or pseudo/opcode. */ |
e74211b6 | 1038 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1039 | |
d02603dc NC |
1040 | --input_line_pointer; |
1041 | nul_char = get_symbol_name (& s); /* name's delimiter. */ | |
1042 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
1043 | rest = input_line_pointer + (nul_char == '"' ? 2 : 1); | |
041ff4dd | 1044 | |
d02603dc NC |
1045 | /* NEXT_CHAR is character after symbol. |
1046 | The end of symbol in the input line is now '\0'. | |
d6415f6c AM |
1047 | S points to the beginning of the symbol. |
1048 | [In case of pseudo-op, s->'.'.] | |
d02603dc | 1049 | Input_line_pointer->'\0' where NUL_CHAR was. */ |
2e57ce7b | 1050 | if (TC_START_LABEL (s, nul_char, next_char)) |
252b5132 RH |
1051 | { |
1052 | if (flag_m68k_mri) | |
1053 | { | |
252b5132 | 1054 | /* In MRI mode, \tsym: set 0 is permitted. */ |
252b5132 RH |
1055 | if (*rest == ':') |
1056 | ++rest; | |
f0e652b4 | 1057 | |
252b5132 RH |
1058 | if (*rest == ' ' || *rest == '\t') |
1059 | ++rest; | |
f0e652b4 | 1060 | |
252b5132 RH |
1061 | if ((strncasecmp (rest, "EQU", 3) == 0 |
1062 | || strncasecmp (rest, "SET", 3) == 0) | |
1063 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1064 | { | |
1065 | input_line_pointer = rest + 3; | |
1066 | equals (s, 1); | |
1067 | continue; | |
1068 | } | |
1069 | } | |
1070 | ||
041ff4dd | 1071 | line_label = colon (s); /* User-defined label. */ |
d02603dc NC |
1072 | restore_line_pointer (nul_char); |
1073 | ++ input_line_pointer; | |
a645d1eb L |
1074 | #ifdef tc_check_label |
1075 | tc_check_label (line_label); | |
1076 | #endif | |
041ff4dd | 1077 | /* Input_line_pointer->after ':'. */ |
252b5132 | 1078 | SKIP_WHITESPACE (); |
252b5132 | 1079 | } |
d02603dc NC |
1080 | else if ((next_char == '=' && *rest == '=') |
1081 | || ((next_char == ' ' || next_char == '\t') | |
1082 | && rest[0] == '=' | |
1083 | && rest[1] == '=')) | |
9497f5ac NC |
1084 | { |
1085 | equals (s, -1); | |
1086 | demand_empty_rest_of_line (); | |
1087 | } | |
d02603dc NC |
1088 | else if ((next_char == '=' |
1089 | || ((next_char == ' ' || next_char == '\t') | |
1090 | && *rest == '=')) | |
ee3c9814 | 1091 | #ifdef TC_EQUAL_IN_INSN |
d02603dc | 1092 | && !TC_EQUAL_IN_INSN (next_char, s) |
ee3c9814 | 1093 | #endif |
fa94de6b | 1094 | ) |
252b5132 RH |
1095 | { |
1096 | equals (s, 1); | |
1097 | demand_empty_rest_of_line (); | |
1098 | } | |
1099 | else | |
041ff4dd NC |
1100 | { |
1101 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
1102 | pop = NULL; |
1103 | ||
a8a3b3b2 | 1104 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
1105 | { |
1106 | char *s2 = s; | |
37d8bb27 | 1107 | |
42135cad AM |
1108 | strncpy (original_case_string, s2, |
1109 | sizeof (original_case_string) - 1); | |
37d8bb27 | 1110 | original_case_string[sizeof (original_case_string) - 1] = 0; |
ef99799a | 1111 | |
252b5132 RH |
1112 | while (*s2) |
1113 | { | |
3882b010 | 1114 | *s2 = TOLOWER (*s2); |
252b5132 RH |
1115 | s2++; |
1116 | } | |
1117 | } | |
1118 | #endif | |
abd63a32 | 1119 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 1120 | { |
7be1c489 AM |
1121 | /* The MRI assembler uses pseudo-ops without |
1122 | a period. */ | |
32e4c1c2 | 1123 | pop = po_entry_find (po_hash, s); |
252b5132 RH |
1124 | if (pop != NULL && pop->poc_handler == NULL) |
1125 | pop = NULL; | |
1126 | } | |
1127 | ||
1128 | if (pop != NULL | |
041ff4dd | 1129 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 1130 | { |
041ff4dd | 1131 | /* PSEUDO - OP. |
f0e652b4 | 1132 | |
d02603dc | 1133 | WARNING: next_char may be end-of-line. |
d6415f6c AM |
1134 | We lookup the pseudo-op table with s+1 because we |
1135 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
1136 | |
1137 | if (pop == NULL) | |
32e4c1c2 | 1138 | pop = po_entry_find (po_hash, s + 1); |
e4475e39 NS |
1139 | if (pop && !pop->poc_handler) |
1140 | pop = NULL; | |
252b5132 RH |
1141 | |
1142 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
1143 | automatic alignment directive. What a hack |
1144 | this is. */ | |
252b5132 RH |
1145 | if (mri_pending_align |
1146 | && (pop == NULL | |
041ff4dd NC |
1147 | || !((pop->poc_handler == cons |
1148 | && pop->poc_val == 1) | |
1149 | || (pop->poc_handler == s_space | |
1150 | && pop->poc_val == 1) | |
252b5132 | 1151 | #ifdef tc_conditional_pseudoop |
041ff4dd | 1152 | || tc_conditional_pseudoop (pop) |
252b5132 | 1153 | #endif |
041ff4dd NC |
1154 | || pop->poc_handler == s_if |
1155 | || pop->poc_handler == s_ifdef | |
1156 | || pop->poc_handler == s_ifc | |
1157 | || pop->poc_handler == s_ifeqs | |
1158 | || pop->poc_handler == s_else | |
1159 | || pop->poc_handler == s_endif | |
1160 | || pop->poc_handler == s_globl | |
1161 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
1162 | { |
1163 | do_align (1, (char *) NULL, 0, 0); | |
1164 | mri_pending_align = 0; | |
f0e652b4 | 1165 | |
252b5132 RH |
1166 | if (line_label != NULL) |
1167 | { | |
2b47531b | 1168 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1169 | S_SET_VALUE (line_label, frag_now_fix ()); |
1170 | } | |
1171 | } | |
1172 | ||
041ff4dd | 1173 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
1174 | if (pop == NULL) |
1175 | { | |
5e75c3ab JB |
1176 | char *end = input_line_pointer; |
1177 | ||
d02603dc | 1178 | (void) restore_line_pointer (nul_char); |
252b5132 | 1179 | s_ignore (0); |
d02603dc | 1180 | nul_char = next_char = *--input_line_pointer; |
5e75c3ab | 1181 | *input_line_pointer = '\0'; |
d02603dc | 1182 | if (! macro_defined || ! try_macro (next_char, s)) |
5e75c3ab JB |
1183 | { |
1184 | *end = '\0'; | |
1185 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
d02603dc | 1186 | *input_line_pointer++ = nul_char; |
5e75c3ab | 1187 | } |
252b5132 RH |
1188 | continue; |
1189 | } | |
1190 | ||
041ff4dd | 1191 | /* Put it back for error messages etc. */ |
d02603dc | 1192 | next_char = restore_line_pointer (nul_char); |
252b5132 RH |
1193 | /* The following skip of whitespace is compulsory. |
1194 | A well shaped space is sometimes all that separates | |
041ff4dd | 1195 | keyword from operands. */ |
d02603dc | 1196 | if (next_char == ' ' || next_char == '\t') |
252b5132 | 1197 | input_line_pointer++; |
041ff4dd NC |
1198 | |
1199 | /* Input_line is restored. | |
d6415f6c AM |
1200 | Input_line_pointer->1st non-blank char |
1201 | after pseudo-operation. */ | |
252b5132 RH |
1202 | (*pop->poc_handler) (pop->poc_val); |
1203 | ||
1204 | /* If that was .end, just get out now. */ | |
1205 | if (pop->poc_handler == s_end) | |
1206 | goto quit; | |
1207 | } | |
1208 | else | |
1209 | { | |
d02603dc NC |
1210 | /* WARNING: next_char may be end-of-line. */ |
1211 | /* Also: input_line_pointer->`\0` where nul_char was. */ | |
1212 | (void) restore_line_pointer (nul_char); | |
7592cfd7 | 1213 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
d02603dc | 1214 | next_char = nul_char = *input_line_pointer; |
252b5132 RH |
1215 | *input_line_pointer = '\0'; |
1216 | ||
1217 | generate_lineno_debug (); | |
1218 | ||
d02603dc | 1219 | if (macro_defined && try_macro (next_char, s)) |
5e75c3ab | 1220 | continue; |
252b5132 RH |
1221 | |
1222 | if (mri_pending_align) | |
1223 | { | |
1224 | do_align (1, (char *) NULL, 0, 0); | |
1225 | mri_pending_align = 0; | |
1226 | if (line_label != NULL) | |
1227 | { | |
2b47531b | 1228 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1229 | S_SET_VALUE (line_label, frag_now_fix ()); |
1230 | } | |
1231 | } | |
1232 | ||
fa94de6b | 1233 | assemble_one (s); /* Assemble 1 instruction. */ |
252b5132 | 1234 | |
3be64886 NC |
1235 | /* PR 19630: The backend may have set ilp to NULL |
1236 | if it encountered a catastrophic failure. */ | |
1237 | if (input_line_pointer == NULL) | |
1238 | as_fatal (_("unable to continue with assembly.")); | |
1239 | ||
d02603dc | 1240 | *input_line_pointer++ = nul_char; |
252b5132 RH |
1241 | |
1242 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
1243 | this instruction. */ |
1244 | } | |
1245 | } | |
252b5132 | 1246 | continue; |
041ff4dd | 1247 | } |
252b5132 RH |
1248 | |
1249 | /* Empty statement? */ | |
d02603dc | 1250 | if (is_end_of_line[(unsigned char) next_char]) |
252b5132 RH |
1251 | continue; |
1252 | ||
d02603dc | 1253 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (next_char)) |
252b5132 | 1254 | { |
041ff4dd | 1255 | /* local label ("4:") */ |
252b5132 RH |
1256 | char *backup = input_line_pointer; |
1257 | ||
e74211b6 | 1258 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1259 | |
d02603dc NC |
1260 | temp = next_char - '0'; |
1261 | ||
1262 | if (nul_char == '"') | |
1263 | ++ input_line_pointer; | |
252b5132 | 1264 | |
041ff4dd | 1265 | /* Read the whole number. */ |
3882b010 | 1266 | while (ISDIGIT (*input_line_pointer)) |
252b5132 | 1267 | { |
d27aad4e AC |
1268 | const long digit = *input_line_pointer - '0'; |
1269 | if (temp > (LONG_MAX - digit) / 10) | |
1270 | { | |
1271 | as_bad (_("local label too large near %s"), backup); | |
1272 | temp = -1; | |
1273 | break; | |
1274 | } | |
1275 | temp = temp * 10 + digit; | |
252b5132 | 1276 | ++input_line_pointer; |
041ff4dd | 1277 | } |
252b5132 | 1278 | |
d27aad4e AC |
1279 | /* Overflow: stop processing the label. */ |
1280 | if (temp == -1) | |
7bb178ec L |
1281 | { |
1282 | ignore_rest_of_line (); | |
1283 | continue; | |
1284 | } | |
d27aad4e | 1285 | |
252b5132 RH |
1286 | if (LOCAL_LABELS_DOLLAR |
1287 | && *input_line_pointer == '$' | |
1288 | && *(input_line_pointer + 1) == ':') | |
1289 | { | |
1290 | input_line_pointer += 2; | |
1291 | ||
1292 | if (dollar_label_defined (temp)) | |
1293 | { | |
d27aad4e | 1294 | as_fatal (_("label \"%ld$\" redefined"), temp); |
252b5132 RH |
1295 | } |
1296 | ||
1297 | define_dollar_label (temp); | |
1298 | colon (dollar_label_name (temp, 0)); | |
1299 | continue; | |
1300 | } | |
1301 | ||
1302 | if (LOCAL_LABELS_FB | |
1303 | && *input_line_pointer++ == ':') | |
1304 | { | |
1305 | fb_label_instance_inc (temp); | |
1306 | colon (fb_label_name (temp, 0)); | |
1307 | continue; | |
1308 | } | |
1309 | ||
1310 | input_line_pointer = backup; | |
d02603dc | 1311 | } |
252b5132 | 1312 | |
d02603dc | 1313 | if (next_char && strchr (line_comment_chars, next_char)) |
041ff4dd | 1314 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1315 | sb sbuf; |
252b5132 RH |
1316 | char *ends; |
1317 | char *new_buf; | |
1318 | char *new_tmp; | |
1319 | unsigned int new_length; | |
1320 | char *tmp_buf = 0; | |
1321 | ||
252b5132 | 1322 | s = input_line_pointer; |
d34049e8 | 1323 | if (!startswith (s, "APP\n")) |
601e61cd NC |
1324 | { |
1325 | /* We ignore it. */ | |
1326 | ignore_rest_of_line (); | |
1327 | continue; | |
1328 | } | |
1329 | bump_line_counters (); | |
252b5132 RH |
1330 | s += 4; |
1331 | ||
1332 | ends = strstr (s, "#NO_APP\n"); | |
1333 | ||
1334 | if (!ends) | |
1335 | { | |
1336 | unsigned int tmp_len; | |
1337 | unsigned int num; | |
1338 | ||
1339 | /* The end of the #APP wasn't in this buffer. We | |
1340 | keep reading in buffers until we find the #NO_APP | |
1341 | that goes with this #APP There is one. The specs | |
47eebc20 | 1342 | guarantee it... */ |
252b5132 | 1343 | tmp_len = buffer_limit - s; |
8860a416 | 1344 | tmp_buf = XNEWVEC (char, tmp_len + 1); |
252b5132 RH |
1345 | memcpy (tmp_buf, s, tmp_len); |
1346 | do | |
1347 | { | |
1348 | new_tmp = input_scrub_next_buffer (&buffer); | |
1349 | if (!new_tmp) | |
1350 | break; | |
1351 | else | |
1352 | buffer_limit = new_tmp; | |
1353 | input_line_pointer = buffer; | |
1354 | ends = strstr (buffer, "#NO_APP\n"); | |
1355 | if (ends) | |
1356 | num = ends - buffer; | |
1357 | else | |
1358 | num = buffer_limit - buffer; | |
1359 | ||
8860a416 | 1360 | tmp_buf = XRESIZEVEC (char, tmp_buf, tmp_len + num); |
252b5132 RH |
1361 | memcpy (tmp_buf + tmp_len, buffer, num); |
1362 | tmp_len += num; | |
1363 | } | |
1364 | while (!ends); | |
1365 | ||
1366 | input_line_pointer = ends ? ends + 8 : NULL; | |
1367 | ||
1368 | s = tmp_buf; | |
1369 | ends = s + tmp_len; | |
1370 | ||
1371 | } | |
1372 | else | |
1373 | { | |
1374 | input_line_pointer = ends + 8; | |
1375 | } | |
1376 | ||
1377 | scrub_string = s; | |
1378 | scrub_string_end = ends; | |
1379 | ||
1380 | new_length = ends - s; | |
8860a416 | 1381 | new_buf = XNEWVEC (char, new_length); |
252b5132 RH |
1382 | new_tmp = new_buf; |
1383 | for (;;) | |
1384 | { | |
39a45edc AM |
1385 | size_t space; |
1386 | size_t size; | |
252b5132 RH |
1387 | |
1388 | space = (new_buf + new_length) - new_tmp; | |
1389 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1390 | ||
1391 | if (size < space) | |
1392 | { | |
64e55042 | 1393 | new_tmp[size] = 0; |
252b5132 RH |
1394 | break; |
1395 | } | |
1396 | ||
8860a416 | 1397 | new_buf = XRESIZEVEC (char, new_buf, new_length + 100); |
252b5132 RH |
1398 | new_tmp = new_buf + new_length; |
1399 | new_length += 100; | |
1400 | } | |
1401 | ||
9fbb53c7 | 1402 | free (tmp_buf); |
f0e652b4 | 1403 | |
64e55042 HPN |
1404 | /* We've "scrubbed" input to the preferred format. In the |
1405 | process we may have consumed the whole of the remaining | |
1406 | file (and included files). We handle this formatted | |
1407 | input similar to that of macro expansion, letting | |
1408 | actual macro expansion (possibly nested) and other | |
1409 | input expansion work. Beware that in messages, line | |
1410 | numbers and possibly file names will be incorrect. */ | |
d2ae702c L |
1411 | new_length = strlen (new_buf); |
1412 | sb_build (&sbuf, new_length); | |
1413 | sb_add_buffer (&sbuf, new_buf, new_length); | |
64e55042 HPN |
1414 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); |
1415 | sb_kill (&sbuf); | |
1416 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1417 | free (new_buf); | |
252b5132 RH |
1418 | continue; |
1419 | } | |
1420 | ||
e74211b6 | 1421 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 RH |
1422 | |
1423 | #ifdef tc_unrecognized_line | |
d02603dc | 1424 | if (tc_unrecognized_line (next_char)) |
252b5132 RH |
1425 | continue; |
1426 | #endif | |
0e389e77 | 1427 | input_line_pointer--; |
601e61cd | 1428 | /* Report unknown char as error. */ |
c95b35a9 | 1429 | demand_empty_rest_of_line (); |
041ff4dd | 1430 | } |
041ff4dd | 1431 | } |
252b5132 RH |
1432 | |
1433 | quit: | |
04648e65 | 1434 | symbol_set_value_now (&dot_symbol); |
252b5132 | 1435 | |
fa94de6b RM |
1436 | #ifdef HANDLE_BUNDLE |
1437 | if (bundle_lock_frag != NULL) | |
1438 | { | |
1439 | as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line, | |
1440 | _(".bundle_lock with no matching .bundle_unlock")); | |
1441 | bundle_lock_frag = NULL; | |
1442 | bundle_lock_frchain = NULL; | |
d416e51d | 1443 | bundle_lock_depth = 0; |
fa94de6b RM |
1444 | } |
1445 | #endif | |
1446 | ||
252b5132 | 1447 | #ifdef md_cleanup |
041ff4dd | 1448 | md_cleanup (); |
252b5132 | 1449 | #endif |
041ff4dd NC |
1450 | /* Close the input file. */ |
1451 | input_scrub_close (); | |
4c400d5e AM |
1452 | #ifdef WARN_COMMENTS |
1453 | { | |
1454 | if (warn_comment && found_comment) | |
1455 | as_warn_where (found_comment_file, found_comment, | |
1456 | "first comment found here"); | |
1457 | } | |
1458 | #endif | |
252b5132 RH |
1459 | } |
1460 | ||
e5604d79 | 1461 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
956a6ba3 | 1462 | Take the sign of the number from SIGN rather than X_add_number. */ |
e5604d79 RS |
1463 | |
1464 | static void | |
956a6ba3 | 1465 | convert_to_bignum (expressionS *exp, int sign) |
e5604d79 RS |
1466 | { |
1467 | valueT value; | |
1468 | unsigned int i; | |
1469 | ||
1470 | value = exp->X_add_number; | |
1471 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1472 | { | |
1473 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1474 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1475 | } | |
1476 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1477 | the sign of the original value. */ | |
956a6ba3 JB |
1478 | if ((exp->X_add_number < 0) == !sign) |
1479 | generic_bignum[i++] = sign ? LITTLENUM_MASK : 0; | |
e5604d79 RS |
1480 | exp->X_op = O_big; |
1481 | exp->X_add_number = i; | |
1482 | } | |
1483 | ||
252b5132 RH |
1484 | /* For most MRI pseudo-ops, the line actually ends at the first |
1485 | nonquoted space. This function looks for that point, stuffs a null | |
1486 | in, and sets *STOPCP to the character that used to be there, and | |
1487 | returns the location. | |
1488 | ||
1489 | Until I hear otherwise, I am going to assume that this is only true | |
1490 | for the m68k MRI assembler. */ | |
1491 | ||
1492 | char * | |
39e6acbd | 1493 | mri_comment_field (char *stopcp) |
252b5132 | 1494 | { |
252b5132 | 1495 | char *s; |
041ff4dd | 1496 | #ifdef TC_M68K |
252b5132 RH |
1497 | int inquote = 0; |
1498 | ||
1499 | know (flag_m68k_mri); | |
1500 | ||
1501 | for (s = input_line_pointer; | |
041ff4dd | 1502 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1503 | || inquote); |
1504 | s++) | |
1505 | { | |
1506 | if (*s == '\'') | |
041ff4dd | 1507 | inquote = !inquote; |
252b5132 | 1508 | } |
252b5132 | 1509 | #else |
041ff4dd NC |
1510 | for (s = input_line_pointer; |
1511 | !is_end_of_line[(unsigned char) *s]; | |
1512 | s++) | |
252b5132 | 1513 | ; |
041ff4dd | 1514 | #endif |
252b5132 RH |
1515 | *stopcp = *s; |
1516 | *s = '\0'; | |
f0e652b4 | 1517 | |
252b5132 | 1518 | return s; |
252b5132 RH |
1519 | } |
1520 | ||
1521 | /* Skip to the end of an MRI comment field. */ | |
1522 | ||
1523 | void | |
39e6acbd | 1524 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1525 | { |
1526 | know (flag_mri); | |
1527 | ||
1528 | input_line_pointer = stop; | |
1529 | *stop = stopc; | |
041ff4dd | 1530 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1531 | ++input_line_pointer; |
1532 | } | |
1533 | ||
041ff4dd | 1534 | void |
39e6acbd | 1535 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1536 | { |
1537 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1538 | } | |
1539 | ||
252b5132 RH |
1540 | /* Handle the .align pseudo-op. A positive ARG is a default alignment |
1541 | (in bytes). A negative ARG is the negative of the length of the | |
1542 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1543 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1544 | #ifndef TC_ALIGN_LIMIT |
1545 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1546 | #endif | |
9ebd302d | 1547 | |
252b5132 | 1548 | static void |
9136aa49 | 1549 | s_align (signed int arg, int bytes_p) |
252b5132 | 1550 | { |
11ec4ba9 | 1551 | unsigned int align_limit = TC_ALIGN_LIMIT; |
90320e40 | 1552 | addressT align; |
252b5132 | 1553 | char *stop = NULL; |
fb25138b | 1554 | char stopc = 0; |
252b5132 | 1555 | offsetT fill = 0; |
9136aa49 | 1556 | unsigned int max; |
252b5132 RH |
1557 | int fill_p; |
1558 | ||
1559 | if (flag_mri) | |
1560 | stop = mri_comment_field (&stopc); | |
1561 | ||
1562 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1563 | { | |
1564 | if (arg < 0) | |
1565 | align = 0; | |
1566 | else | |
041ff4dd | 1567 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1568 | } |
1569 | else | |
1570 | { | |
1571 | align = get_absolute_expression (); | |
1572 | SKIP_WHITESPACE (); | |
db2ed2e0 AM |
1573 | |
1574 | #ifdef TC_ALIGN_ZERO_IS_DEFAULT | |
1575 | if (arg > 0 && align == 0) | |
1576 | align = arg; | |
1577 | #endif | |
252b5132 RH |
1578 | } |
1579 | ||
1580 | if (bytes_p) | |
1581 | { | |
1582 | /* Convert to a power of 2. */ | |
1583 | if (align != 0) | |
1584 | { | |
1585 | unsigned int i; | |
1586 | ||
1587 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1588 | ; | |
1589 | if (align != 1) | |
0e389e77 | 1590 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1591 | |
252b5132 RH |
1592 | align = i; |
1593 | } | |
1594 | } | |
1595 | ||
b617dc20 | 1596 | if (align > align_limit) |
252b5132 | 1597 | { |
b617dc20 | 1598 | align = align_limit; |
90320e40 | 1599 | as_warn (_("alignment too large: %u assumed"), align_limit); |
252b5132 RH |
1600 | } |
1601 | ||
1602 | if (*input_line_pointer != ',') | |
1603 | { | |
1604 | fill_p = 0; | |
1605 | max = 0; | |
1606 | } | |
1607 | else | |
1608 | { | |
1609 | ++input_line_pointer; | |
1610 | if (*input_line_pointer == ',') | |
1611 | fill_p = 0; | |
1612 | else | |
1613 | { | |
1614 | fill = get_absolute_expression (); | |
1615 | SKIP_WHITESPACE (); | |
1616 | fill_p = 1; | |
1617 | } | |
1618 | ||
1619 | if (*input_line_pointer != ',') | |
1620 | max = 0; | |
1621 | else | |
1622 | { | |
1623 | ++input_line_pointer; | |
1624 | max = get_absolute_expression (); | |
1625 | } | |
1626 | } | |
1627 | ||
041ff4dd | 1628 | if (!fill_p) |
252b5132 RH |
1629 | { |
1630 | if (arg < 0) | |
1631 | as_warn (_("expected fill pattern missing")); | |
1632 | do_align (align, (char *) NULL, 0, max); | |
1633 | } | |
1634 | else | |
1635 | { | |
9136aa49 | 1636 | unsigned int fill_len; |
252b5132 RH |
1637 | |
1638 | if (arg >= 0) | |
1639 | fill_len = 1; | |
1640 | else | |
041ff4dd | 1641 | fill_len = -arg; |
9136aa49 | 1642 | |
252b5132 RH |
1643 | if (fill_len <= 1) |
1644 | { | |
9136aa49 | 1645 | char fill_char = 0; |
252b5132 RH |
1646 | |
1647 | fill_char = fill; | |
1648 | do_align (align, &fill_char, fill_len, max); | |
1649 | } | |
1650 | else | |
1651 | { | |
1652 | char ab[16]; | |
1653 | ||
1654 | if ((size_t) fill_len > sizeof ab) | |
9136aa49 DG |
1655 | { |
1656 | as_warn (_("fill pattern too long, truncating to %u"), | |
1657 | (unsigned) sizeof ab); | |
1658 | fill_len = sizeof ab; | |
1659 | } | |
1660 | ||
252b5132 RH |
1661 | md_number_to_chars (ab, fill, fill_len); |
1662 | do_align (align, ab, fill_len, max); | |
1663 | } | |
1664 | } | |
1665 | ||
1666 | demand_empty_rest_of_line (); | |
1667 | ||
1668 | if (flag_mri) | |
1669 | mri_comment_end (stop, stopc); | |
1670 | } | |
1671 | ||
1672 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1673 | align to a 4 byte boundary. */ | |
1674 | ||
041ff4dd | 1675 | void |
39e6acbd | 1676 | s_align_bytes (int arg) |
252b5132 RH |
1677 | { |
1678 | s_align (arg, 1); | |
1679 | } | |
1680 | ||
1681 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1682 | to a 2**4 boundary. */ | |
1683 | ||
041ff4dd | 1684 | void |
39e6acbd | 1685 | s_align_ptwo (int arg) |
252b5132 RH |
1686 | { |
1687 | s_align (arg, 0); | |
1688 | } | |
1689 | ||
caa32fe5 NC |
1690 | /* Switch in and out of alternate macro mode. */ |
1691 | ||
b38ead21 | 1692 | static void |
caa32fe5 NC |
1693 | s_altmacro (int on) |
1694 | { | |
1695 | demand_empty_rest_of_line (); | |
1696 | macro_set_alternate (on); | |
1697 | } | |
1698 | ||
7bfd842d NC |
1699 | /* Read a symbol name from input_line_pointer. |
1700 | ||
1701 | Stores the symbol name in a buffer and returns a pointer to this buffer. | |
1702 | The buffer is xalloc'ed. It is the caller's responsibility to free | |
1703 | this buffer. | |
1704 | ||
1705 | The name is not left in the i_l_p buffer as it may need processing | |
1706 | to handle escape characters. | |
1707 | ||
1708 | Advances i_l_p to the next non-whitespace character. | |
1709 | ||
1710 | If a symbol name could not be read, the routine issues an error | |
1711 | messages, skips to the end of the line and returns NULL. */ | |
1712 | ||
69602580 | 1713 | char * |
7bfd842d NC |
1714 | read_symbol_name (void) |
1715 | { | |
1716 | char * name; | |
1717 | char * start; | |
1718 | char c; | |
1719 | ||
1720 | c = *input_line_pointer++; | |
1721 | ||
1722 | if (c == '"') | |
1723 | { | |
1724 | #define SYM_NAME_CHUNK_LEN 128 | |
1725 | ptrdiff_t len = SYM_NAME_CHUNK_LEN; | |
1726 | char * name_end; | |
1727 | unsigned int C; | |
1728 | ||
8860a416 | 1729 | start = name = XNEWVEC (char, len + 1); |
7bfd842d NC |
1730 | |
1731 | name_end = name + SYM_NAME_CHUNK_LEN; | |
1732 | ||
1733 | while (is_a_char (C = next_char_of_string ())) | |
1734 | { | |
1735 | if (name >= name_end) | |
1736 | { | |
1737 | ptrdiff_t sofar; | |
1738 | ||
1739 | sofar = name - start; | |
1740 | len += SYM_NAME_CHUNK_LEN; | |
8860a416 | 1741 | start = XRESIZEVEC (char, start, len + 1); |
7bfd842d NC |
1742 | name_end = start + len; |
1743 | name = start + sofar; | |
1744 | } | |
34bca508 | 1745 | |
7bfd842d NC |
1746 | *name++ = (char) C; |
1747 | } | |
1748 | *name = 0; | |
1749 | ||
1750 | /* Since quoted symbol names can contain non-ASCII characters, | |
1751 | check the string and warn if it cannot be recognised by the | |
1752 | current character set. */ | |
1753 | if (mbstowcs (NULL, name, len) == (size_t) -1) | |
1754 | as_warn (_("symbol name not recognised in the current locale")); | |
1755 | } | |
2469b3c5 | 1756 | else if (is_name_beginner (c) || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1757 | { |
1758 | ptrdiff_t len; | |
1759 | ||
1760 | name = input_line_pointer - 1; | |
1761 | ||
2469b3c5 | 1762 | /* We accept FAKE_LABEL_CHAR in a name in case this is |
7bfd842d NC |
1763 | being called with a constructed string. */ |
1764 | while (is_part_of_name (c = *input_line_pointer++) | |
2469b3c5 | 1765 | || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1766 | ; |
1767 | ||
1768 | len = (input_line_pointer - name) - 1; | |
8860a416 | 1769 | start = XNEWVEC (char, len + 1); |
7bfd842d NC |
1770 | |
1771 | memcpy (start, name, len); | |
1772 | start[len] = 0; | |
1773 | ||
1774 | /* Skip a name ender char if one is present. */ | |
1775 | if (! is_name_ender (c)) | |
1776 | --input_line_pointer; | |
1777 | } | |
1778 | else | |
1779 | name = start = NULL; | |
1780 | ||
1781 | if (name == start) | |
1782 | { | |
1783 | as_bad (_("expected symbol name")); | |
1784 | ignore_rest_of_line (); | |
1785 | return NULL; | |
1786 | } | |
34bca508 | 1787 | |
7bfd842d NC |
1788 | SKIP_WHITESPACE (); |
1789 | ||
1790 | return start; | |
1791 | } | |
1792 | ||
1793 | ||
e13bab5a AM |
1794 | symbolS * |
1795 | s_comm_internal (int param, | |
1796 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1797 | { |
e13bab5a | 1798 | char *name; |
e13bab5a AM |
1799 | offsetT temp, size; |
1800 | symbolS *symbolP = NULL; | |
252b5132 | 1801 | char *stop = NULL; |
fb25138b | 1802 | char stopc = 0; |
e13bab5a | 1803 | expressionS exp; |
252b5132 RH |
1804 | |
1805 | if (flag_mri) | |
1806 | stop = mri_comment_field (&stopc); | |
1807 | ||
7bfd842d NC |
1808 | if ((name = read_symbol_name ()) == NULL) |
1809 | goto out; | |
f0e652b4 | 1810 | |
e13bab5a AM |
1811 | /* Accept an optional comma after the name. The comma used to be |
1812 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1813 | if (*input_line_pointer == ',') | |
1814 | input_line_pointer++; | |
1815 | ||
e13bab5a AM |
1816 | temp = get_absolute_expr (&exp); |
1817 | size = temp; | |
65879393 | 1818 | size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1819 | if (exp.X_op == O_absent) |
252b5132 | 1820 | { |
e13bab5a | 1821 | as_bad (_("missing size expression")); |
252b5132 | 1822 | ignore_rest_of_line (); |
e13bab5a | 1823 | goto out; |
252b5132 | 1824 | } |
e13bab5a | 1825 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1826 | { |
e13bab5a | 1827 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1828 | ignore_rest_of_line (); |
e13bab5a | 1829 | goto out; |
252b5132 | 1830 | } |
f0e652b4 | 1831 | |
252b5132 | 1832 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1833 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1834 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1835 | { |
92757bc9 JB |
1836 | if (!S_IS_VOLATILE (symbolP)) |
1837 | { | |
1838 | symbolP = NULL; | |
1839 | as_bad (_("symbol `%s' is already defined"), name); | |
92757bc9 JB |
1840 | ignore_rest_of_line (); |
1841 | goto out; | |
1842 | } | |
89cdfe57 | 1843 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1844 | S_SET_SEGMENT (symbolP, undefined_section); |
1845 | S_SET_VALUE (symbolP, 0); | |
1846 | symbol_set_frag (symbolP, &zero_address_frag); | |
1847 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1848 | } |
f0e652b4 | 1849 | |
e13bab5a AM |
1850 | size = S_GET_VALUE (symbolP); |
1851 | if (size == 0) | |
1852 | size = temp; | |
1853 | else if (size != temp) | |
1854 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1855 | name, (long) size, (long) temp); | |
1856 | ||
e13bab5a AM |
1857 | if (comm_parse_extra != NULL) |
1858 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1859 | else |
1860 | { | |
e13bab5a | 1861 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1862 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1863 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
e13bab5a | 1864 | } |
252b5132 RH |
1865 | |
1866 | demand_empty_rest_of_line (); | |
e13bab5a | 1867 | out: |
252b5132 RH |
1868 | if (flag_mri) |
1869 | mri_comment_end (stop, stopc); | |
9fbb53c7 | 1870 | free (name); |
e13bab5a AM |
1871 | return symbolP; |
1872 | } | |
1873 | ||
1874 | void | |
1875 | s_comm (int ignore) | |
1876 | { | |
1877 | s_comm_internal (ignore, NULL); | |
1878 | } | |
252b5132 RH |
1879 | |
1880 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1881 | symbol with the appropriate name. We make s_space do the right | |
1882 | thing by increasing the size. */ | |
1883 | ||
1884 | void | |
39e6acbd | 1885 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1886 | { |
1887 | char *name; | |
1888 | char c; | |
1889 | char *alc = NULL; | |
1890 | symbolS *sym; | |
1891 | offsetT align; | |
1892 | char *stop = NULL; | |
fb25138b | 1893 | char stopc = 0; |
252b5132 | 1894 | |
041ff4dd | 1895 | if (!flag_mri) |
252b5132 RH |
1896 | { |
1897 | s_comm (0); | |
1898 | return; | |
1899 | } | |
1900 | ||
1901 | stop = mri_comment_field (&stopc); | |
1902 | ||
1903 | SKIP_WHITESPACE (); | |
1904 | ||
1905 | name = input_line_pointer; | |
3882b010 | 1906 | if (!ISDIGIT (*name)) |
d02603dc | 1907 | c = get_symbol_name (& name); |
252b5132 RH |
1908 | else |
1909 | { | |
1910 | do | |
1911 | { | |
1912 | ++input_line_pointer; | |
1913 | } | |
3882b010 | 1914 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1915 | |
252b5132 RH |
1916 | c = *input_line_pointer; |
1917 | *input_line_pointer = '\0'; | |
1918 | ||
1919 | if (line_label != NULL) | |
1920 | { | |
8860a416 TS |
1921 | alc = XNEWVEC (char, strlen (S_GET_NAME (line_label)) |
1922 | + (input_line_pointer - name) + 1); | |
252b5132 RH |
1923 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); |
1924 | name = alc; | |
1925 | } | |
1926 | } | |
1927 | ||
1928 | sym = symbol_find_or_make (name); | |
d02603dc | 1929 | c = restore_line_pointer (c); |
9fbb53c7 | 1930 | free (alc); |
252b5132 RH |
1931 | |
1932 | if (*input_line_pointer != ',') | |
1933 | align = 0; | |
1934 | else | |
1935 | { | |
1936 | ++input_line_pointer; | |
1937 | align = get_absolute_expression (); | |
1938 | } | |
1939 | ||
041ff4dd | 1940 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1941 | { |
0e389e77 | 1942 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1943 | ignore_rest_of_line (); |
1944 | mri_comment_end (stop, stopc); | |
1945 | return; | |
1946 | } | |
1947 | ||
1948 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1949 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1950 | mri_common_symbol = sym; |
1951 | ||
1952 | #ifdef S_SET_ALIGN | |
1953 | if (align != 0) | |
1954 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1955 | #else |
1956 | (void) align; | |
252b5132 RH |
1957 | #endif |
1958 | ||
1959 | if (line_label != NULL) | |
1960 | { | |
2b47531b ILT |
1961 | expressionS exp; |
1962 | exp.X_op = O_symbol; | |
1963 | exp.X_add_symbol = sym; | |
1964 | exp.X_add_number = 0; | |
1965 | symbol_set_value_expression (line_label, &exp); | |
1966 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1967 | S_SET_SEGMENT (line_label, expr_section); |
1968 | } | |
1969 | ||
1970 | /* FIXME: We just ignore the small argument, which distinguishes | |
1971 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1972 | ||
1973 | /* Ignore the type and hptype. */ | |
1974 | if (*input_line_pointer == ',') | |
1975 | input_line_pointer += 2; | |
1976 | if (*input_line_pointer == ',') | |
1977 | input_line_pointer += 2; | |
1978 | ||
1979 | demand_empty_rest_of_line (); | |
1980 | ||
1981 | mri_comment_end (stop, stopc); | |
1982 | } | |
1983 | ||
1984 | void | |
39e6acbd | 1985 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1986 | { |
1987 | segT section; | |
3d540e93 | 1988 | int temp; |
252b5132 RH |
1989 | |
1990 | temp = get_absolute_expression (); | |
1991 | if (flag_readonly_data_in_text) | |
1992 | { | |
1993 | section = text_section; | |
1994 | temp += 1000; | |
1995 | } | |
1996 | else | |
1997 | section = data_section; | |
1998 | ||
1999 | subseg_set (section, (subsegT) temp); | |
2000 | ||
252b5132 RH |
2001 | demand_empty_rest_of_line (); |
2002 | } | |
2003 | ||
2004 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
2005 | do_scrub_chars when a preprocessor # line comment is seen with a | |
2006 | file name. This default definition may be overridden by the object | |
2007 | or CPU specific pseudo-ops. This function is also the default | |
2008 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
2009 | .file. */ | |
2010 | ||
ecb4347a | 2011 | void |
f17c130b | 2012 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
2013 | { |
2014 | #ifdef LISTING | |
2015 | if (listing) | |
2016 | listing_source_file (file); | |
2017 | #endif | |
2018 | register_dependency (file); | |
2019 | #ifdef obj_app_file | |
c04f5787 | 2020 | obj_app_file (file, appfile); |
ecb4347a DJ |
2021 | #endif |
2022 | } | |
2023 | ||
041ff4dd | 2024 | void |
39e6acbd | 2025 | s_app_file (int appfile) |
252b5132 | 2026 | { |
3d540e93 | 2027 | char *s; |
252b5132 RH |
2028 | int length; |
2029 | ||
041ff4dd | 2030 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
2031 | if ((s = demand_copy_string (&length)) != 0) |
2032 | { | |
252b5132 | 2033 | int may_omit |
93e914b2 | 2034 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
2035 | |
2036 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 2037 | backquote. */ |
252b5132 RH |
2038 | if (flag_m68k_mri |
2039 | && *input_line_pointer == '\'' | |
2040 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
2041 | ++input_line_pointer; | |
2042 | ||
2043 | demand_empty_rest_of_line (); | |
041ff4dd | 2044 | if (!may_omit) |
c04f5787 | 2045 | s_app_file_string (s, appfile); |
252b5132 RH |
2046 | } |
2047 | } | |
2048 | ||
e9fc6c21 AO |
2049 | static int |
2050 | get_linefile_number (int *flag) | |
2051 | { | |
2052 | SKIP_WHITESPACE (); | |
2053 | ||
2054 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
2055 | return 0; | |
2056 | ||
2057 | *flag = get_absolute_expression (); | |
2058 | ||
2059 | return 1; | |
2060 | } | |
2061 | ||
252b5132 RH |
2062 | /* Handle the .appline pseudo-op. This is automatically generated by |
2063 | do_scrub_chars when a preprocessor # line comment is seen. This | |
2064 | default definition may be overridden by the object or CPU specific | |
2065 | pseudo-ops. */ | |
2066 | ||
2067 | void | |
93e914b2 | 2068 | s_app_line (int appline) |
252b5132 | 2069 | { |
e9fc6c21 | 2070 | char *file = NULL; |
252b5132 RH |
2071 | int l; |
2072 | ||
2073 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
2074 | if (appline) |
2075 | l = get_absolute_expression (); | |
2076 | else if (!get_linefile_number (&l)) | |
2077 | { | |
2078 | ignore_rest_of_line (); | |
2079 | return; | |
2080 | } | |
2081 | ||
2082 | l--; | |
47837f8e NC |
2083 | |
2084 | if (l < -1) | |
252b5132 | 2085 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
2086 | Besides, it's silly. GCC however will generate a line number of |
2087 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
2088 | ||
fa94de6b | 2089 | # 0 "<built-in>" |
47837f8e NC |
2090 | |
2091 | We do not want to barf on this, especially since such files are used | |
2092 | in the GCC and GDB testsuites. So we check for negative line numbers | |
2093 | rather than non-positive line numbers. */ | |
0e389e77 | 2094 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 2095 | l + 1); |
252b5132 RH |
2096 | else |
2097 | { | |
93e914b2 | 2098 | int flags = 0; |
93e914b2 AO |
2099 | int length = 0; |
2100 | ||
2101 | if (!appline) | |
2102 | { | |
e9fc6c21 AO |
2103 | SKIP_WHITESPACE (); |
2104 | ||
2105 | if (*input_line_pointer == '"') | |
2106 | file = demand_copy_string (&length); | |
93e914b2 AO |
2107 | |
2108 | if (file) | |
2109 | { | |
2110 | int this_flag; | |
2111 | ||
e9fc6c21 | 2112 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
2113 | switch (this_flag) |
2114 | { | |
2115 | /* From GCC's cpp documentation: | |
2116 | 1: start of a new file. | |
2117 | 2: returning to a file after having included | |
fa94de6b | 2118 | another file. |
93e914b2 AO |
2119 | 3: following text comes from a system header file. |
2120 | 4: following text should be treated as extern "C". | |
2121 | ||
2122 | 4 is nonsensical for the assembler; 3, we don't | |
2123 | care about, so we ignore it just in case a | |
2124 | system header file is included while | |
2125 | preprocessing assembly. So 1 and 2 are all we | |
2126 | care about, and they are mutually incompatible. | |
2127 | new_logical_line_flags() demands this. */ | |
2128 | case 1: | |
2129 | case 2: | |
2130 | if (flags && flags != (1 << this_flag)) | |
2131 | as_warn (_("incompatible flag %i in line directive"), | |
2132 | this_flag); | |
2133 | else | |
2134 | flags |= 1 << this_flag; | |
2135 | break; | |
2136 | ||
2137 | case 3: | |
2138 | case 4: | |
2139 | /* We ignore these. */ | |
2140 | break; | |
2141 | ||
2142 | default: | |
2143 | as_warn (_("unsupported flag %i in line directive"), | |
2144 | this_flag); | |
2145 | break; | |
2146 | } | |
e9fc6c21 AO |
2147 | |
2148 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
2149 | file = 0; | |
93e914b2 AO |
2150 | } |
2151 | } | |
2152 | ||
e9fc6c21 AO |
2153 | if (appline || file) |
2154 | { | |
2155 | new_logical_line_flags (file, l, flags); | |
252b5132 | 2156 | #ifdef LISTING |
e9fc6c21 AO |
2157 | if (listing) |
2158 | listing_source_line (l); | |
252b5132 | 2159 | #endif |
e9fc6c21 | 2160 | } |
252b5132 | 2161 | } |
e9fc6c21 AO |
2162 | if (appline || file) |
2163 | demand_empty_rest_of_line (); | |
2164 | else | |
2165 | ignore_rest_of_line (); | |
252b5132 RH |
2166 | } |
2167 | ||
2168 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
2169 | read_a_source_file. */ | |
2170 | ||
2171 | void | |
39e6acbd | 2172 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2173 | { |
2174 | if (flag_mri) | |
2175 | { | |
2176 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 2177 | but we don't support that. */ |
252b5132 | 2178 | SKIP_WHITESPACE (); |
041ff4dd | 2179 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2180 | && *input_line_pointer != '*' |
2181 | && *input_line_pointer != '!') | |
2182 | as_warn (_("start address not supported")); | |
2183 | } | |
2184 | } | |
2185 | ||
2186 | /* Handle the .err pseudo-op. */ | |
2187 | ||
2188 | void | |
39e6acbd | 2189 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2190 | { |
2191 | as_bad (_(".err encountered")); | |
2192 | demand_empty_rest_of_line (); | |
d190d046 HPN |
2193 | } |
2194 | ||
2195 | /* Handle the .error and .warning pseudo-ops. */ | |
2196 | ||
2197 | void | |
2198 | s_errwarn (int err) | |
2199 | { | |
2200 | int len; | |
2201 | /* The purpose for the conditional assignment is not to | |
2202 | internationalize the directive itself, but that we need a | |
2203 | self-contained message, one that can be passed like the | |
2204 | demand_copy_C_string return value, and with no assumption on the | |
2205 | location of the name of the directive within the message. */ | |
6d4af3c2 | 2206 | const char *msg |
d190d046 HPN |
2207 | = (err ? _(".error directive invoked in source file") |
2208 | : _(".warning directive invoked in source file")); | |
2209 | ||
2210 | if (!is_it_end_of_statement ()) | |
2211 | { | |
2212 | if (*input_line_pointer != '\"') | |
2213 | { | |
2214 | as_bad (_("%s argument must be a string"), | |
2215 | err ? ".error" : ".warning"); | |
40a4d956 | 2216 | ignore_rest_of_line (); |
d190d046 HPN |
2217 | return; |
2218 | } | |
2219 | ||
2220 | msg = demand_copy_C_string (&len); | |
2221 | if (msg == NULL) | |
2222 | return; | |
2223 | } | |
2224 | ||
2225 | if (err) | |
2226 | as_bad ("%s", msg); | |
2227 | else | |
2228 | as_warn ("%s", msg); | |
2229 | demand_empty_rest_of_line (); | |
252b5132 RH |
2230 | } |
2231 | ||
2232 | /* Handle the MRI fail pseudo-op. */ | |
2233 | ||
2234 | void | |
39e6acbd | 2235 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2236 | { |
2237 | offsetT temp; | |
2238 | char *stop = NULL; | |
fb25138b | 2239 | char stopc = 0; |
252b5132 RH |
2240 | |
2241 | if (flag_mri) | |
2242 | stop = mri_comment_field (&stopc); | |
2243 | ||
2244 | temp = get_absolute_expression (); | |
2245 | if (temp >= 500) | |
2246 | as_warn (_(".fail %ld encountered"), (long) temp); | |
2247 | else | |
2248 | as_bad (_(".fail %ld encountered"), (long) temp); | |
2249 | ||
2250 | demand_empty_rest_of_line (); | |
2251 | ||
2252 | if (flag_mri) | |
2253 | mri_comment_end (stop, stopc); | |
2254 | } | |
2255 | ||
041ff4dd | 2256 | void |
39e6acbd | 2257 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2258 | { |
2259 | expressionS rep_exp; | |
2260 | long size = 1; | |
3d540e93 | 2261 | long fill = 0; |
252b5132 RH |
2262 | char *p; |
2263 | ||
2264 | #ifdef md_flush_pending_output | |
2265 | md_flush_pending_output (); | |
2266 | #endif | |
2267 | ||
cc3f603a JM |
2268 | #ifdef md_cons_align |
2269 | md_cons_align (1); | |
2270 | #endif | |
2271 | ||
4f2358bc | 2272 | expression (&rep_exp); |
252b5132 RH |
2273 | if (*input_line_pointer == ',') |
2274 | { | |
2275 | input_line_pointer++; | |
2276 | size = get_absolute_expression (); | |
2277 | if (*input_line_pointer == ',') | |
2278 | { | |
2279 | input_line_pointer++; | |
2280 | fill = get_absolute_expression (); | |
2281 | } | |
2282 | } | |
2283 | ||
2284 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
2285 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
2286 | if (size > BSD_FILL_SIZE_CROCK_8) | |
2287 | { | |
0e389e77 | 2288 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
2289 | size = BSD_FILL_SIZE_CROCK_8; |
2290 | } | |
2291 | if (size < 0) | |
2292 | { | |
0e389e77 | 2293 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
2294 | size = 0; |
2295 | } | |
2296 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
2297 | { | |
2298 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 2299 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
2300 | size = 0; |
2301 | } | |
2302 | ||
2303 | if (size && !need_pass_2) | |
2304 | { | |
ec9ab52c JB |
2305 | if (now_seg == absolute_section) |
2306 | { | |
2307 | if (rep_exp.X_op != O_constant) | |
2308 | as_bad (_("non-constant fill count for absolute section")); | |
2309 | else if (fill && rep_exp.X_add_number != 0) | |
2310 | as_bad (_("attempt to fill absolute section with non-zero value")); | |
2311 | abs_section_offset += rep_exp.X_add_number * size; | |
2312 | } | |
2313 | else if (fill | |
2314 | && (rep_exp.X_op != O_constant || rep_exp.X_add_number != 0) | |
2315 | && in_bss ()) | |
2316 | as_bad (_("attempt to fill section `%s' with non-zero value"), | |
2317 | segment_name (now_seg)); | |
2318 | ||
252b5132 RH |
2319 | if (rep_exp.X_op == O_constant) |
2320 | { | |
2321 | p = frag_var (rs_fill, (int) size, (int) size, | |
2322 | (relax_substateT) 0, (symbolS *) 0, | |
2323 | (offsetT) rep_exp.X_add_number, | |
2324 | (char *) 0); | |
2325 | } | |
2326 | else | |
2327 | { | |
2328 | /* We don't have a constant repeat count, so we can't use | |
2329 | rs_fill. We can get the same results out of rs_space, | |
2330 | but its argument is in bytes, so we must multiply the | |
2331 | repeat count by size. */ | |
2332 | ||
2333 | symbolS *rep_sym; | |
2334 | rep_sym = make_expr_symbol (&rep_exp); | |
2335 | if (size != 1) | |
2336 | { | |
2337 | expressionS size_exp; | |
2338 | size_exp.X_op = O_constant; | |
2339 | size_exp.X_add_number = size; | |
2340 | ||
2341 | rep_exp.X_op = O_multiply; | |
2342 | rep_exp.X_add_symbol = rep_sym; | |
2343 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
2344 | rep_exp.X_add_number = 0; | |
2345 | rep_sym = make_expr_symbol (&rep_exp); | |
2346 | } | |
2347 | ||
2348 | p = frag_var (rs_space, (int) size, (int) size, | |
2349 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
2350 | } | |
f0e652b4 | 2351 | |
252b5132 | 2352 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2353 | |
252b5132 | 2354 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2355 | flavoured AS. The following bizarre behaviour is to be |
2356 | compatible with above. I guess they tried to take up to 8 | |
2357 | bytes from a 4-byte expression and they forgot to sign | |
2358 | extend. */ | |
252b5132 RH |
2359 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2360 | md_number_to_chars (p, (valueT) fill, | |
2361 | (size > BSD_FILL_SIZE_CROCK_4 | |
2362 | ? BSD_FILL_SIZE_CROCK_4 | |
2363 | : (int) size)); | |
2364 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2365 | but emits no error message because it seems a legal thing to do. |
2366 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2367 | compiler. */ |
252b5132 RH |
2368 | } |
2369 | demand_empty_rest_of_line (); | |
2370 | } | |
2371 | ||
041ff4dd | 2372 | void |
39e6acbd | 2373 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2374 | { |
2375 | char *name; | |
2376 | int c; | |
2377 | symbolS *symbolP; | |
2378 | char *stop = NULL; | |
fb25138b | 2379 | char stopc = 0; |
252b5132 RH |
2380 | |
2381 | if (flag_mri) | |
2382 | stop = mri_comment_field (&stopc); | |
2383 | ||
2384 | do | |
2385 | { | |
7bfd842d NC |
2386 | if ((name = read_symbol_name ()) == NULL) |
2387 | return; | |
2388 | ||
252b5132 | 2389 | symbolP = symbol_find_or_make (name); |
58b5739a RH |
2390 | S_SET_EXTERNAL (symbolP); |
2391 | ||
252b5132 | 2392 | SKIP_WHITESPACE (); |
58b5739a | 2393 | c = *input_line_pointer; |
252b5132 RH |
2394 | if (c == ',') |
2395 | { | |
2396 | input_line_pointer++; | |
2397 | SKIP_WHITESPACE (); | |
0e389e77 | 2398 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2399 | c = '\n'; |
2400 | } | |
7bfd842d NC |
2401 | |
2402 | free (name); | |
252b5132 RH |
2403 | } |
2404 | while (c == ','); | |
2405 | ||
2406 | demand_empty_rest_of_line (); | |
2407 | ||
2408 | if (flag_mri) | |
2409 | mri_comment_end (stop, stopc); | |
2410 | } | |
2411 | ||
2412 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2413 | ||
2414 | void | |
39e6acbd | 2415 | s_irp (int irpc) |
252b5132 | 2416 | { |
3b4dbbbf TS |
2417 | char * eol; |
2418 | const char * file; | |
252b5132 RH |
2419 | unsigned int line; |
2420 | sb s; | |
2421 | const char *err; | |
2422 | sb out; | |
2423 | ||
3b4dbbbf | 2424 | file = as_where (&line); |
252b5132 | 2425 | |
40a4d956 | 2426 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2427 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2428 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2429 | input_line_pointer = eol; | |
252b5132 RH |
2430 | |
2431 | sb_new (&out); | |
2432 | ||
7592cfd7 | 2433 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2434 | if (err != NULL) |
2435 | as_bad_where (file, line, "%s", err); | |
2436 | ||
2437 | sb_kill (&s); | |
2438 | ||
9f10757c | 2439 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2440 | sb_kill (&out); |
2441 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2442 | } | |
2443 | ||
2444 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2445 | the section to only be linked once. However, this is not supported | |
2446 | by most object file formats. This takes an optional argument, | |
2447 | which is what to do about duplicates. */ | |
2448 | ||
2449 | void | |
39e6acbd | 2450 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2451 | { |
2452 | enum linkonce_type type; | |
2453 | ||
2454 | SKIP_WHITESPACE (); | |
2455 | ||
2456 | type = LINKONCE_DISCARD; | |
2457 | ||
041ff4dd | 2458 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2459 | { |
2460 | char *s; | |
2461 | char c; | |
2462 | ||
d02603dc | 2463 | c = get_symbol_name (& s); |
252b5132 RH |
2464 | if (strcasecmp (s, "discard") == 0) |
2465 | type = LINKONCE_DISCARD; | |
2466 | else if (strcasecmp (s, "one_only") == 0) | |
2467 | type = LINKONCE_ONE_ONLY; | |
2468 | else if (strcasecmp (s, "same_size") == 0) | |
2469 | type = LINKONCE_SAME_SIZE; | |
2470 | else if (strcasecmp (s, "same_contents") == 0) | |
2471 | type = LINKONCE_SAME_CONTENTS; | |
2472 | else | |
2473 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2474 | ||
d02603dc | 2475 | (void) restore_line_pointer (c); |
252b5132 RH |
2476 | } |
2477 | ||
2478 | #ifdef obj_handle_link_once | |
2479 | obj_handle_link_once (type); | |
2480 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2481 | { |
2482 | flagword flags; | |
2483 | ||
2484 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2485 | as_warn (_(".linkonce is not supported for this object file format")); | |
2486 | ||
fd361982 | 2487 | flags = bfd_section_flags (now_seg); |
252b5132 RH |
2488 | flags |= SEC_LINK_ONCE; |
2489 | switch (type) | |
2490 | { | |
2491 | default: | |
2492 | abort (); | |
2493 | case LINKONCE_DISCARD: | |
2494 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2495 | break; | |
2496 | case LINKONCE_ONE_ONLY: | |
2497 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2498 | break; | |
2499 | case LINKONCE_SAME_SIZE: | |
2500 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2501 | break; | |
2502 | case LINKONCE_SAME_CONTENTS: | |
2503 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2504 | break; | |
2505 | } | |
fd361982 | 2506 | if (!bfd_set_section_flags (now_seg, flags)) |
252b5132 RH |
2507 | as_bad (_("bfd_set_section_flags: %s"), |
2508 | bfd_errmsg (bfd_get_error ())); | |
2509 | } | |
252b5132 RH |
2510 | #endif /* ! defined (obj_handle_link_once) */ |
2511 | ||
2512 | demand_empty_rest_of_line (); | |
2513 | } | |
2514 | ||
e13bab5a | 2515 | void |
9136aa49 | 2516 | bss_alloc (symbolS *symbolP, addressT size, unsigned int align) |
252b5132 | 2517 | { |
e13bab5a | 2518 | char *pfrag; |
252b5132 RH |
2519 | segT current_seg = now_seg; |
2520 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2521 | segT bss_seg = bss_section; |
2522 | ||
252b5132 RH |
2523 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2524 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2525 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2526 | { | |
2527 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2528 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2529 | { |
2530 | bss_seg = subseg_new (".sbss", 1); | |
2531 | seg_info (bss_seg)->bss = 1; | |
a4dd6c97 | 2532 | if (!bfd_set_section_flags (bss_seg, SEC_ALLOC | SEC_SMALL_DATA)) |
252b5132 RH |
2533 | as_warn (_("error setting flags for \".sbss\": %s"), |
2534 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2535 | } |
2536 | } | |
2537 | #endif | |
e13bab5a | 2538 | subseg_set (bss_seg, 1); |
8684e216 | 2539 | |
9136aa49 | 2540 | if (align > OCTETS_PER_BYTE_POWER) |
041ff4dd | 2541 | { |
e13bab5a AM |
2542 | record_alignment (bss_seg, align); |
2543 | frag_align (align, 0, 0); | |
041ff4dd | 2544 | } |
252b5132 | 2545 | |
e13bab5a AM |
2546 | /* Detach from old frag. */ |
2547 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2548 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2549 | |
e13bab5a | 2550 | symbol_set_frag (symbolP, frag_now); |
5947daaf | 2551 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size * OCTETS_PER_BYTE, NULL); |
e13bab5a | 2552 | *pfrag = 0; |
f0e652b4 | 2553 | |
e13bab5a AM |
2554 | #ifdef S_SET_SIZE |
2555 | S_SET_SIZE (symbolP, size); | |
2556 | #endif | |
2557 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2558 | |
e13bab5a AM |
2559 | #ifdef OBJ_COFF |
2560 | /* The symbol may already have been created with a preceding | |
2561 | ".globl" directive -- be careful not to step on storage class | |
2562 | in that case. Otherwise, set it to static. */ | |
2563 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2564 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2565 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2566 | |
e13bab5a AM |
2567 | subseg_set (current_seg, current_subseg); |
2568 | } | |
f0e652b4 | 2569 | |
e13bab5a AM |
2570 | offsetT |
2571 | parse_align (int align_bytes) | |
2572 | { | |
2573 | expressionS exp; | |
2574 | addressT align; | |
252b5132 | 2575 | |
e13bab5a AM |
2576 | SKIP_WHITESPACE (); |
2577 | if (*input_line_pointer != ',') | |
2578 | { | |
2579 | no_align: | |
2580 | as_bad (_("expected alignment after size")); | |
2581 | ignore_rest_of_line (); | |
2582 | return -1; | |
2583 | } | |
f0e652b4 | 2584 | |
e13bab5a AM |
2585 | input_line_pointer++; |
2586 | SKIP_WHITESPACE (); | |
f0e652b4 | 2587 | |
e13bab5a AM |
2588 | align = get_absolute_expr (&exp); |
2589 | if (exp.X_op == O_absent) | |
2590 | goto no_align; | |
2591 | ||
2592 | if (!exp.X_unsigned) | |
2593 | { | |
2594 | as_warn (_("alignment negative; 0 assumed")); | |
2595 | align = 0; | |
041ff4dd | 2596 | } |
e13bab5a AM |
2597 | |
2598 | if (align_bytes && align != 0) | |
252b5132 | 2599 | { |
e13bab5a AM |
2600 | /* convert to a power of 2 alignment */ |
2601 | unsigned int alignp2 = 0; | |
2602 | while ((align & 1) == 0) | |
2603 | align >>= 1, ++alignp2; | |
2604 | if (align != 1) | |
252b5132 | 2605 | { |
e13bab5a AM |
2606 | as_bad (_("alignment not a power of 2")); |
2607 | ignore_rest_of_line (); | |
2608 | return -1; | |
252b5132 | 2609 | } |
e13bab5a | 2610 | align = alignp2; |
252b5132 | 2611 | } |
e13bab5a AM |
2612 | return align; |
2613 | } | |
252b5132 | 2614 | |
e13bab5a AM |
2615 | /* Called from s_comm_internal after symbol name and size have been |
2616 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2617 | 1 if this was a ".bss" directive which has a 3rd argument | |
2618 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2619 | with alignment in bytes. */ | |
252b5132 | 2620 | |
13c56984 | 2621 | symbolS * |
e13bab5a AM |
2622 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2623 | { | |
2624 | addressT align = 0; | |
252b5132 | 2625 | |
e13bab5a AM |
2626 | if (needs_align) |
2627 | { | |
2628 | align = parse_align (needs_align - 1); | |
2629 | if (align == (addressT) -1) | |
2630 | return NULL; | |
252b5132 RH |
2631 | } |
2632 | else | |
e13bab5a AM |
2633 | /* Assume some objects may require alignment on some systems. */ |
2634 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2635 | |
e13bab5a AM |
2636 | bss_alloc (symbolP, size, align); |
2637 | return symbolP; | |
041ff4dd | 2638 | } |
252b5132 RH |
2639 | |
2640 | void | |
39e6acbd | 2641 | s_lcomm (int needs_align) |
252b5132 | 2642 | { |
e13bab5a | 2643 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2644 | } |
2645 | ||
041ff4dd | 2646 | void |
39e6acbd | 2647 | s_lcomm_bytes (int needs_align) |
252b5132 | 2648 | { |
e13bab5a | 2649 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2650 | } |
2651 | ||
041ff4dd | 2652 | void |
39e6acbd | 2653 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2654 | { |
3d540e93 | 2655 | char *name; |
252b5132 | 2656 | expressionS exp; |
3d540e93 | 2657 | symbolS *symbolP; |
252b5132 | 2658 | |
041ff4dd | 2659 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
7bfd842d NC |
2660 | if ((name = read_symbol_name ()) == NULL) |
2661 | return; | |
f0e652b4 | 2662 | |
252b5132 RH |
2663 | if (*input_line_pointer != ',') |
2664 | { | |
0e389e77 | 2665 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 2666 | goto err_out; |
252b5132 | 2667 | } |
f0e652b4 | 2668 | |
252b5132 | 2669 | input_line_pointer++; |
9497f5ac | 2670 | expression_and_evaluate (&exp); |
f0e652b4 | 2671 | |
252b5132 RH |
2672 | if (exp.X_op != O_constant |
2673 | && exp.X_op != O_register) | |
2674 | { | |
2675 | as_bad (_("bad expression")); | |
7bfd842d | 2676 | goto err_out; |
252b5132 | 2677 | } |
f0e652b4 | 2678 | |
252b5132 RH |
2679 | symbolP = symbol_find_or_make (name); |
2680 | ||
86ebace2 | 2681 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2682 | { |
2683 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2684 | keep the "external" bit. */ |
252b5132 RH |
2685 | S_SET_SEGMENT (symbolP, |
2686 | (exp.X_op == O_constant | |
2687 | ? absolute_section | |
2688 | : reg_section)); | |
2689 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2690 | } | |
2691 | else | |
2692 | { | |
0e389e77 | 2693 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2694 | } |
f0e652b4 | 2695 | |
252b5132 | 2696 | demand_empty_rest_of_line (); |
7bfd842d NC |
2697 | free (name); |
2698 | return; | |
2699 | ||
2700 | err_out: | |
2701 | ignore_rest_of_line (); | |
2702 | free (name); | |
2703 | return; | |
041ff4dd | 2704 | } |
252b5132 | 2705 | |
0822d075 NC |
2706 | /* Read a line into an sb. Returns the character that ended the line |
2707 | or zero if there are no more lines. */ | |
252b5132 RH |
2708 | |
2709 | static int | |
7592cfd7 | 2710 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2711 | { |
40a4d956 | 2712 | char *eol; |
252b5132 RH |
2713 | |
2714 | if (input_line_pointer[-1] == '\n') | |
2715 | bump_line_counters (); | |
2716 | ||
2717 | if (input_line_pointer >= buffer_limit) | |
2718 | { | |
2719 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2720 | if (buffer_limit == 0) | |
2721 | return 0; | |
2722 | } | |
2723 | ||
7592cfd7 | 2724 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2725 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2726 | input_line_pointer = eol; | |
f0e652b4 | 2727 | |
0822d075 NC |
2728 | /* Don't skip multiple end-of-line characters, because that breaks support |
2729 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2730 | characters but isn't. Instead just skip one end of line character and | |
2731 | return the character skipped so that the caller can re-insert it if | |
2732 | necessary. */ | |
40a4d956 | 2733 | return *input_line_pointer++; |
252b5132 RH |
2734 | } |
2735 | ||
39a45edc | 2736 | static size_t |
7592cfd7 NC |
2737 | get_non_macro_line_sb (sb *line) |
2738 | { | |
2739 | return get_line_sb (line, 0); | |
2740 | } | |
2741 | ||
39a45edc | 2742 | static size_t |
7592cfd7 NC |
2743 | get_macro_line_sb (sb *line) |
2744 | { | |
2745 | return get_line_sb (line, 1); | |
2746 | } | |
2747 | ||
fea17916 | 2748 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2749 | |
2750 | void | |
39e6acbd | 2751 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2752 | { |
3b4dbbbf TS |
2753 | char *eol; |
2754 | const char * file; | |
252b5132 RH |
2755 | unsigned int line; |
2756 | sb s; | |
252b5132 RH |
2757 | const char *err; |
2758 | const char *name; | |
2759 | ||
3b4dbbbf | 2760 | file = as_where (&line); |
252b5132 | 2761 | |
40a4d956 | 2762 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2763 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2764 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2765 | input_line_pointer = eol; | |
252b5132 | 2766 | |
252b5132 | 2767 | if (line_label != NULL) |
360e86f1 JB |
2768 | { |
2769 | sb label; | |
d2ae702c | 2770 | size_t len; |
252b5132 | 2771 | |
d2ae702c L |
2772 | name = S_GET_NAME (line_label); |
2773 | len = strlen (name); | |
2774 | sb_build (&label, len); | |
2775 | sb_add_buffer (&label, name, len); | |
7592cfd7 | 2776 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2777 | sb_kill (&label); |
2778 | } | |
2779 | else | |
7592cfd7 | 2780 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2781 | if (err != NULL) |
02ddf156 | 2782 | as_bad_where (file, line, err, name); |
252b5132 RH |
2783 | else |
2784 | { | |
2785 | if (line_label != NULL) | |
2786 | { | |
5e75c3ab | 2787 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2788 | S_SET_VALUE (line_label, 0); |
2b47531b | 2789 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2790 | } |
2791 | ||
abd63a32 | 2792 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
32e4c1c2 | 2793 | && po_entry_find (po_hash, name) != NULL) |
041ff4dd | 2794 | || (!flag_m68k_mri |
252b5132 | 2795 | && *name == '.' |
32e4c1c2 | 2796 | && po_entry_find (po_hash, name + 1) != NULL)) |
02ddf156 JB |
2797 | as_warn_where (file, |
2798 | line, | |
2799 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2800 | name); |
2801 | } | |
2802 | ||
2803 | sb_kill (&s); | |
2804 | } | |
2805 | ||
2806 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2807 | expansion. */ | |
2808 | ||
2809 | void | |
39e6acbd | 2810 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2811 | { |
5808f4a6 NC |
2812 | if (macro_nest) |
2813 | { | |
2814 | cond_exit_macro (macro_nest); | |
2815 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2816 | } | |
2817 | else | |
2818 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2819 | } |
2820 | ||
2821 | /* Switch in and out of MRI mode. */ | |
2822 | ||
2823 | void | |
39e6acbd | 2824 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2825 | { |
3d540e93 NC |
2826 | int on; |
2827 | #ifdef MRI_MODE_CHANGE | |
2828 | int old_flag; | |
2829 | #endif | |
252b5132 RH |
2830 | |
2831 | on = get_absolute_expression (); | |
3d540e93 | 2832 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2833 | old_flag = flag_mri; |
3d540e93 | 2834 | #endif |
252b5132 RH |
2835 | if (on != 0) |
2836 | { | |
2837 | flag_mri = 1; | |
2838 | #ifdef TC_M68K | |
2839 | flag_m68k_mri = 1; | |
2840 | #endif | |
2841 | macro_mri_mode (1); | |
2842 | } | |
2843 | else | |
2844 | { | |
2845 | flag_mri = 0; | |
abd63a32 | 2846 | #ifdef TC_M68K |
252b5132 | 2847 | flag_m68k_mri = 0; |
abd63a32 | 2848 | #endif |
252b5132 RH |
2849 | macro_mri_mode (0); |
2850 | } | |
2851 | ||
2852 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2853 | update the operator rankings. */ | |
2854 | expr_set_precedence (); | |
2855 | ||
2856 | #ifdef MRI_MODE_CHANGE | |
2857 | if (on != old_flag) | |
2858 | MRI_MODE_CHANGE (on); | |
2859 | #endif | |
2860 | ||
2861 | demand_empty_rest_of_line (); | |
2862 | } | |
2863 | ||
2864 | /* Handle changing the location counter. */ | |
2865 | ||
2866 | static void | |
39e6acbd | 2867 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 | 2868 | { |
259af69e AM |
2869 | if (segment != now_seg |
2870 | && segment != absolute_section | |
2871 | && segment != expr_section) | |
0e389e77 | 2872 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2873 | |
2874 | if (now_seg == absolute_section) | |
2875 | { | |
2876 | if (fill != 0) | |
2877 | as_warn (_("ignoring fill value in absolute section")); | |
2878 | if (exp->X_op != O_constant) | |
2879 | { | |
2880 | as_bad (_("only constant offsets supported in absolute section")); | |
2881 | exp->X_add_number = 0; | |
2882 | } | |
2883 | abs_section_offset = exp->X_add_number; | |
2884 | } | |
2885 | else | |
2886 | { | |
2887 | char *p; | |
2289f85d AM |
2888 | symbolS *sym = exp->X_add_symbol; |
2889 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2890 | |
ec9ab52c JB |
2891 | if (fill && in_bss ()) |
2892 | as_warn (_("ignoring fill value in section `%s'"), | |
2893 | segment_name (now_seg)); | |
2894 | ||
2289f85d AM |
2895 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2896 | { | |
2897 | /* Handle complex expressions. */ | |
2898 | sym = make_expr_symbol (exp); | |
2899 | off = 0; | |
2900 | } | |
2901 | ||
2902 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2903 | *p = fill; |
2904 | } | |
2905 | } | |
2906 | ||
041ff4dd | 2907 | void |
39e6acbd | 2908 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2909 | { |
3d540e93 | 2910 | segT segment; |
252b5132 | 2911 | expressionS exp; |
3d540e93 | 2912 | long temp_fill; |
252b5132 RH |
2913 | |
2914 | #ifdef md_flush_pending_output | |
2915 | md_flush_pending_output (); | |
2916 | #endif | |
2917 | ||
2918 | /* The m68k MRI assembler has a different meaning for .org. It | |
2919 | means to create an absolute section at a given address. We can't | |
2920 | support that--use a linker script instead. */ | |
2921 | if (flag_m68k_mri) | |
2922 | { | |
2923 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2924 | ignore_rest_of_line (); | |
2925 | return; | |
2926 | } | |
2927 | ||
2928 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2929 | thing as a sub-segment-relative origin. Any absolute origin is | |
2930 | given a warning, then assumed to be segment-relative. Any | |
2931 | segmented origin expression ("foo+42") had better be in the right | |
2932 | segment or the .org is ignored. | |
2933 | ||
2934 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2935 | we never know sub-segment sizes when we are reading code. BSD | |
2936 | will crash trying to emit negative numbers of filler bytes in | |
2937 | certain .orgs. We don't crash, but see as-write for that code. | |
2938 | ||
2939 | Don't make frag if need_pass_2==1. */ | |
2940 | segment = get_known_segmented_expression (&exp); | |
2941 | if (*input_line_pointer == ',') | |
2942 | { | |
2943 | input_line_pointer++; | |
2944 | temp_fill = get_absolute_expression (); | |
2945 | } | |
2946 | else | |
2947 | temp_fill = 0; | |
2948 | ||
2949 | if (!need_pass_2) | |
2950 | do_org (segment, &exp, temp_fill); | |
2951 | ||
2952 | demand_empty_rest_of_line (); | |
041ff4dd | 2953 | } |
252b5132 RH |
2954 | |
2955 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2956 | called by the obj-format routine which handles section changing | |
2957 | when in MRI mode. It will create a new section, and return it. It | |
2958 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2959 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2960 | |
2961 | void | |
39e6acbd | 2962 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2963 | { |
2964 | #ifdef TC_M68K | |
2965 | ||
2966 | char *name; | |
2967 | char c; | |
2968 | segT seg; | |
2969 | ||
2970 | SKIP_WHITESPACE (); | |
041ff4dd | 2971 | |
252b5132 | 2972 | name = input_line_pointer; |
3882b010 | 2973 | if (!ISDIGIT (*name)) |
d02603dc | 2974 | c = get_symbol_name (& name); |
252b5132 RH |
2975 | else |
2976 | { | |
2977 | do | |
2978 | { | |
2979 | ++input_line_pointer; | |
2980 | } | |
3882b010 | 2981 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2982 | |
252b5132 RH |
2983 | c = *input_line_pointer; |
2984 | *input_line_pointer = '\0'; | |
2985 | } | |
2986 | ||
2987 | name = xstrdup (name); | |
2988 | ||
d02603dc | 2989 | c = restore_line_pointer (c); |
252b5132 RH |
2990 | |
2991 | seg = subseg_new (name, 0); | |
2992 | ||
d02603dc | 2993 | if (c == ',') |
252b5132 | 2994 | { |
9136aa49 | 2995 | unsigned int align; |
252b5132 RH |
2996 | |
2997 | ++input_line_pointer; | |
2998 | align = get_absolute_expression (); | |
2999 | record_alignment (seg, align); | |
3000 | } | |
3001 | ||
3002 | *type = 'C'; | |
3003 | if (*input_line_pointer == ',') | |
3004 | { | |
3005 | c = *++input_line_pointer; | |
3882b010 | 3006 | c = TOUPPER (c); |
252b5132 RH |
3007 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
3008 | *type = c; | |
3009 | else | |
3010 | as_bad (_("unrecognized section type")); | |
3011 | ++input_line_pointer; | |
3012 | ||
252b5132 RH |
3013 | { |
3014 | flagword flags; | |
3015 | ||
3016 | flags = SEC_NO_FLAGS; | |
3017 | if (*type == 'C') | |
3018 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
3019 | else if (*type == 'D' || *type == 'M') | |
3020 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
3021 | else if (*type == 'R') | |
3022 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
3023 | if (flags != SEC_NO_FLAGS) | |
3024 | { | |
fd361982 | 3025 | if (!bfd_set_section_flags (seg, flags)) |
252b5132 | 3026 | as_warn (_("error setting flags for \"%s\": %s"), |
fd361982 | 3027 | bfd_section_name (seg), |
252b5132 RH |
3028 | bfd_errmsg (bfd_get_error ())); |
3029 | } | |
3030 | } | |
252b5132 RH |
3031 | } |
3032 | ||
3033 | /* Ignore the HP type. */ | |
3034 | if (*input_line_pointer == ',') | |
3035 | input_line_pointer += 2; | |
3036 | ||
3037 | demand_empty_rest_of_line (); | |
3038 | ||
3039 | #else /* ! TC_M68K */ | |
252b5132 RH |
3040 | /* The MRI assembler seems to use different forms of .sect for |
3041 | different targets. */ | |
3042 | as_bad ("MRI mode not supported for this target"); | |
3043 | ignore_rest_of_line (); | |
252b5132 RH |
3044 | #endif /* ! TC_M68K */ |
3045 | } | |
3046 | ||
3047 | /* Handle the .print pseudo-op. */ | |
3048 | ||
3049 | void | |
39e6acbd | 3050 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3051 | { |
3052 | char *s; | |
3053 | int len; | |
3054 | ||
3055 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
3056 | if (s != NULL) |
3057 | printf ("%s\n", s); | |
252b5132 RH |
3058 | demand_empty_rest_of_line (); |
3059 | } | |
3060 | ||
3061 | /* Handle the .purgem pseudo-op. */ | |
3062 | ||
3063 | void | |
39e6acbd | 3064 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3065 | { |
3066 | if (is_it_end_of_statement ()) | |
3067 | { | |
3068 | demand_empty_rest_of_line (); | |
3069 | return; | |
3070 | } | |
3071 | ||
3072 | do | |
3073 | { | |
3074 | char *name; | |
3075 | char c; | |
3076 | ||
3077 | SKIP_WHITESPACE (); | |
d02603dc | 3078 | c = get_symbol_name (& name); |
252b5132 RH |
3079 | delete_macro (name); |
3080 | *input_line_pointer = c; | |
d02603dc | 3081 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
3082 | } |
3083 | while (*input_line_pointer++ == ','); | |
3084 | ||
3085 | --input_line_pointer; | |
3086 | demand_empty_rest_of_line (); | |
3087 | } | |
3088 | ||
057f53c1 | 3089 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 3090 | |
057f53c1 JB |
3091 | static void |
3092 | s_bad_end (int endr) | |
7f28ab9d | 3093 | { |
cc643b88 | 3094 | as_warn (_(".end%c encountered without preceding %s"), |
057f53c1 JB |
3095 | endr ? 'r' : 'm', |
3096 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
3097 | demand_empty_rest_of_line (); |
3098 | } | |
3099 | ||
3100 | /* Handle the .rept pseudo-op. */ | |
3101 | ||
252b5132 | 3102 | void |
39e6acbd | 3103 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3104 | { |
808811a3 | 3105 | size_t count; |
252b5132 | 3106 | |
808811a3 | 3107 | count = (size_t) get_absolute_expression (); |
252b5132 | 3108 | |
041ff4dd | 3109 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
3110 | } |
3111 | ||
3112 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 3113 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
3114 | |
3115 | void | |
808811a3 | 3116 | do_repeat (size_t count, const char *start, const char *end) |
6dc19fc4 TW |
3117 | { |
3118 | sb one; | |
3119 | sb many; | |
3120 | ||
808811a3 NC |
3121 | if (((ssize_t) count) < 0) |
3122 | { | |
3123 | as_bad (_("negative count for %s - ignored"), start); | |
3124 | count = 0; | |
3125 | } | |
3126 | ||
252b5132 | 3127 | sb_new (&one); |
7592cfd7 | 3128 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 3129 | { |
6dc19fc4 | 3130 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
3131 | return; |
3132 | } | |
3133 | ||
d2ae702c | 3134 | sb_build (&many, count * one.len); |
252b5132 RH |
3135 | while (count-- > 0) |
3136 | sb_add_sb (&many, &one); | |
3137 | ||
3138 | sb_kill (&one); | |
3139 | ||
9f10757c | 3140 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
3141 | sb_kill (&many); |
3142 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3143 | } | |
3144 | ||
c7927a3c | 3145 | /* Like do_repeat except that any text matching EXPANDER in the |
33eaf5de | 3146 | block is replaced by the iteration count. */ |
c7927a3c NC |
3147 | |
3148 | void | |
808811a3 | 3149 | do_repeat_with_expander (size_t count, |
c7927a3c NC |
3150 | const char * start, |
3151 | const char * end, | |
3152 | const char * expander) | |
3153 | { | |
3154 | sb one; | |
3155 | sb many; | |
3156 | ||
808811a3 NC |
3157 | if (((ssize_t) count) < 0) |
3158 | { | |
3159 | as_bad (_("negative count for %s - ignored"), start); | |
3160 | count = 0; | |
3161 | } | |
3162 | ||
c7927a3c NC |
3163 | sb_new (&one); |
3164 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3165 | { | |
3166 | as_bad (_("%s without %s"), start, end); | |
3167 | return; | |
3168 | } | |
3169 | ||
3170 | sb_new (&many); | |
3171 | ||
3172 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3173 | { | |
3174 | while (count -- > 0) | |
3175 | { | |
3176 | int len; | |
3177 | char * sub; | |
3178 | sb processed; | |
3179 | ||
d2ae702c | 3180 | sb_build (& processed, one.len); |
c7927a3c NC |
3181 | sb_add_sb (& processed, & one); |
3182 | sub = strstr (processed.ptr, expander); | |
808811a3 | 3183 | len = sprintf (sub, "%lu", (unsigned long) count); |
c7927a3c | 3184 | gas_assert (len < 8); |
9dcbfff1 AS |
3185 | memmove (sub + len, sub + 8, |
3186 | processed.ptr + processed.len - (sub + 8)); | |
c7927a3c NC |
3187 | processed.len -= (8 - len); |
3188 | sb_add_sb (& many, & processed); | |
3189 | sb_kill (& processed); | |
3190 | } | |
3191 | } | |
3192 | else | |
3193 | while (count-- > 0) | |
3194 | sb_add_sb (&many, &one); | |
3195 | ||
3196 | sb_kill (&one); | |
3197 | ||
3198 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3199 | sb_kill (&many); | |
3200 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3201 | } | |
3202 | ||
6dc19fc4 TW |
3203 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3204 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3205 | are properly nested. |
6dc19fc4 TW |
3206 | |
3207 | This function makes it easier to implement a premature "break" out of the | |
3208 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3209 | such as line substitutions. */ |
6dc19fc4 TW |
3210 | |
3211 | void | |
39e6acbd | 3212 | end_repeat (int extra) |
6dc19fc4 TW |
3213 | { |
3214 | cond_exit_macro (macro_nest); | |
3215 | while (extra-- >= 0) | |
3216 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3217 | } | |
3218 | ||
be95a9c1 | 3219 | static void |
9497f5ac | 3220 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3221 | { |
3222 | symbolS *symbolP; | |
3223 | ||
3224 | if (name[0] == '.' && name[1] == '\0') | |
3225 | { | |
3226 | /* Turn '. = mumble' into a .org mumble. */ | |
3227 | segT segment; | |
3228 | expressionS exp; | |
3229 | ||
3230 | segment = get_known_segmented_expression (&exp); | |
3231 | ||
3232 | if (!need_pass_2) | |
3233 | do_org (segment, &exp, 0); | |
3234 | ||
3235 | return; | |
3236 | } | |
3237 | ||
3238 | if ((symbolP = symbol_find (name)) == NULL | |
3239 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3240 | { | |
3241 | symbolP = symbol_find_or_make (name); | |
3242 | #ifndef NO_LISTING | |
3243 | /* When doing symbol listings, play games with dummy fragments living | |
3244 | outside the normal fragment chain to record the file and line info | |
3245 | for this symbol. */ | |
3246 | if (listing & LISTING_SYMBOLS) | |
3247 | { | |
3248 | extern struct list_info_struct *listing_tail; | |
8860a416 | 3249 | fragS *dummy_frag = XCNEW (fragS); |
be95a9c1 AM |
3250 | dummy_frag->line = listing_tail; |
3251 | dummy_frag->fr_symbol = symbolP; | |
3252 | symbol_set_frag (symbolP, dummy_frag); | |
3253 | } | |
3254 | #endif | |
76bd66cf | 3255 | #if defined (OBJ_COFF) && !defined (TE_PE) |
31d20a21 AM |
3256 | /* "set" symbols are local unless otherwise specified. */ |
3257 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3258 | #endif |
3259 | } | |
3260 | ||
6a2b6326 | 3261 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac | 3262 | { |
9497f5ac | 3263 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) |
6885131b | 3264 | && !S_CAN_BE_REDEFINED (symbolP)) |
9497f5ac NC |
3265 | { |
3266 | as_bad (_("symbol `%s' is already defined"), name); | |
62bd6b5f AM |
3267 | ignore_rest_of_line (); |
3268 | input_line_pointer--; | |
3269 | return; | |
9497f5ac NC |
3270 | } |
3271 | /* If the symbol is volatile, copy the symbol and replace the | |
3272 | original with the copy, so that previous uses of the symbol will | |
3273 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3274 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3275 | symbolP = symbol_clone (symbolP, 1); |
3276 | } | |
3277 | ||
3278 | if (mode == 0) | |
3279 | S_SET_VOLATILE (symbolP); | |
3280 | else if (mode < 0) | |
3281 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3282 | |
3283 | pseudo_set (symbolP); | |
be95a9c1 AM |
3284 | } |
3285 | ||
9497f5ac NC |
3286 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3287 | then this is .equiv, and it is an error if the symbol is already | |
3288 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3289 | reference. */ | |
252b5132 | 3290 | |
041ff4dd | 3291 | void |
39e6acbd | 3292 | s_set (int equiv) |
252b5132 | 3293 | { |
be95a9c1 | 3294 | char *name; |
252b5132 | 3295 | |
041ff4dd NC |
3296 | /* Especial apologies for the random logic: |
3297 | this just grew, and could be parsed much more simply! | |
3298 | Dean in haste. */ | |
7bfd842d NC |
3299 | if ((name = read_symbol_name ()) == NULL) |
3300 | return; | |
252b5132 RH |
3301 | |
3302 | if (*input_line_pointer != ',') | |
3303 | { | |
0e389e77 | 3304 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 | 3305 | ignore_rest_of_line (); |
7bfd842d | 3306 | free (name); |
252b5132 RH |
3307 | return; |
3308 | } | |
3309 | ||
3310 | input_line_pointer++; | |
be95a9c1 | 3311 | assign_symbol (name, equiv); |
31d20a21 | 3312 | demand_empty_rest_of_line (); |
7bfd842d | 3313 | free (name); |
041ff4dd | 3314 | } |
252b5132 | 3315 | |
041ff4dd | 3316 | void |
39e6acbd | 3317 | s_space (int mult) |
252b5132 RH |
3318 | { |
3319 | expressionS exp; | |
3320 | expressionS val; | |
3321 | char *p = 0; | |
3322 | char *stop = NULL; | |
fb25138b | 3323 | char stopc = 0; |
252b5132 RH |
3324 | int bytes; |
3325 | ||
3326 | #ifdef md_flush_pending_output | |
3327 | md_flush_pending_output (); | |
3328 | #endif | |
3329 | ||
cc3f603a JM |
3330 | #ifdef md_cons_align |
3331 | md_cons_align (1); | |
3332 | #endif | |
3333 | ||
252b5132 RH |
3334 | if (flag_mri) |
3335 | stop = mri_comment_field (&stopc); | |
3336 | ||
3337 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3338 | this is ds.b. */ | |
3339 | if (flag_m68k_mri && mult > 1) | |
3340 | { | |
3341 | if (now_seg == absolute_section) | |
3342 | { | |
3343 | abs_section_offset += abs_section_offset & 1; | |
3344 | if (line_label != NULL) | |
3345 | S_SET_VALUE (line_label, abs_section_offset); | |
3346 | } | |
3347 | else if (mri_common_symbol != NULL) | |
3348 | { | |
91d6fa6a | 3349 | valueT mri_val; |
252b5132 | 3350 | |
91d6fa6a NC |
3351 | mri_val = S_GET_VALUE (mri_common_symbol); |
3352 | if ((mri_val & 1) != 0) | |
252b5132 | 3353 | { |
91d6fa6a | 3354 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3355 | if (line_label != NULL) |
3356 | { | |
2b47531b ILT |
3357 | expressionS *symexp; |
3358 | ||
3359 | symexp = symbol_get_value_expression (line_label); | |
3360 | know (symexp->X_op == O_symbol); | |
3361 | know (symexp->X_add_symbol == mri_common_symbol); | |
3362 | symexp->X_add_number += 1; | |
252b5132 RH |
3363 | } |
3364 | } | |
3365 | } | |
3366 | else | |
3367 | { | |
3368 | do_align (1, (char *) NULL, 0, 0); | |
3369 | if (line_label != NULL) | |
3370 | { | |
2b47531b | 3371 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3372 | S_SET_VALUE (line_label, frag_now_fix ()); |
3373 | } | |
3374 | } | |
3375 | } | |
3376 | ||
3377 | bytes = mult; | |
3378 | ||
3379 | expression (&exp); | |
3380 | ||
3381 | SKIP_WHITESPACE (); | |
3382 | if (*input_line_pointer == ',') | |
3383 | { | |
3384 | ++input_line_pointer; | |
3385 | expression (&val); | |
3386 | } | |
3387 | else | |
3388 | { | |
3389 | val.X_op = O_constant; | |
3390 | val.X_add_number = 0; | |
3391 | } | |
3392 | ||
ec9ab52c JB |
3393 | if ((val.X_op != O_constant |
3394 | || val.X_add_number < - 0x80 | |
3395 | || val.X_add_number > 0xff | |
3396 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3397 | && (now_seg != absolute_section && !in_bss ())) | |
252b5132 | 3398 | { |
9497f5ac | 3399 | resolve_expression (&exp); |
252b5132 | 3400 | if (exp.X_op != O_constant) |
0e389e77 | 3401 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3402 | else |
3403 | { | |
3404 | offsetT i; | |
3405 | ||
005304aa NC |
3406 | /* PR 20901: Check for excessive values. |
3407 | FIXME: 1<<10 is an arbitrary limit. Maybe use maxpagesize instead ? */ | |
3408 | if (exp.X_add_number < 0 || exp.X_add_number > (1 << 10)) | |
5eecd862 | 3409 | as_bad (_("size value for space directive too large: %lx"), |
005304aa NC |
3410 | (long) exp.X_add_number); |
3411 | else | |
3412 | { | |
3413 | if (mult == 0) | |
3414 | mult = 1; | |
3415 | bytes = mult * exp.X_add_number; | |
3416 | ||
3417 | for (i = 0; i < exp.X_add_number; i++) | |
3418 | emit_expr (&val, mult); | |
3419 | } | |
252b5132 RH |
3420 | } |
3421 | } | |
3422 | else | |
3423 | { | |
9497f5ac NC |
3424 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3425 | resolve_expression (&exp); | |
3426 | ||
252b5132 RH |
3427 | if (exp.X_op == O_constant) |
3428 | { | |
a4a151e6 | 3429 | offsetT repeat; |
252b5132 RH |
3430 | |
3431 | repeat = exp.X_add_number; | |
3432 | if (mult) | |
3433 | repeat *= mult; | |
3434 | bytes = repeat; | |
3435 | if (repeat <= 0) | |
3436 | { | |
2d150871 RO |
3437 | if (!flag_mri) |
3438 | as_warn (_(".space repeat count is zero, ignored")); | |
3439 | else if (repeat < 0) | |
252b5132 RH |
3440 | as_warn (_(".space repeat count is negative, ignored")); |
3441 | goto getout; | |
3442 | } | |
3443 | ||
3444 | /* If we are in the absolute section, just bump the offset. */ | |
3445 | if (now_seg == absolute_section) | |
3446 | { | |
ec9ab52c JB |
3447 | if (val.X_op != O_constant || val.X_add_number != 0) |
3448 | as_warn (_("ignoring fill value in absolute section")); | |
252b5132 RH |
3449 | abs_section_offset += repeat; |
3450 | goto getout; | |
3451 | } | |
3452 | ||
3453 | /* If we are secretly in an MRI common section, then | |
3454 | creating space just increases the size of the common | |
3455 | symbol. */ | |
3456 | if (mri_common_symbol != NULL) | |
3457 | { | |
3458 | S_SET_VALUE (mri_common_symbol, | |
3459 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3460 | goto getout; | |
3461 | } | |
3462 | ||
3463 | if (!need_pass_2) | |
3464 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3465 | (offsetT) repeat, (char *) 0); | |
3466 | } | |
3467 | else | |
3468 | { | |
3469 | if (now_seg == absolute_section) | |
3470 | { | |
3471 | as_bad (_("space allocation too complex in absolute section")); | |
3472 | subseg_set (text_section, 0); | |
3473 | } | |
f0e652b4 | 3474 | |
252b5132 RH |
3475 | if (mri_common_symbol != NULL) |
3476 | { | |
3477 | as_bad (_("space allocation too complex in common section")); | |
3478 | mri_common_symbol = NULL; | |
3479 | } | |
f0e652b4 | 3480 | |
252b5132 RH |
3481 | if (!need_pass_2) |
3482 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3483 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3484 | } | |
3485 | ||
ec9ab52c JB |
3486 | if ((val.X_op != O_constant || val.X_add_number != 0) && in_bss ()) |
3487 | as_warn (_("ignoring fill value in section `%s'"), | |
3488 | segment_name (now_seg)); | |
3489 | else if (p) | |
252b5132 RH |
3490 | *p = val.X_add_number; |
3491 | } | |
3492 | ||
3493 | getout: | |
3494 | ||
3495 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3496 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3497 | or dcb.b. */ | |
3498 | if (flag_mri && (bytes & 1) != 0) | |
3499 | mri_pending_align = 1; | |
3500 | ||
3501 | demand_empty_rest_of_line (); | |
3502 | ||
3503 | if (flag_mri) | |
3504 | mri_comment_end (stop, stopc); | |
3505 | } | |
3506 | ||
b1766e7c NC |
3507 | void |
3508 | s_nop (int ignore ATTRIBUTE_UNUSED) | |
3509 | { | |
058430b4 AM |
3510 | expressionS exp; |
3511 | fragS *start; | |
3512 | addressT start_off; | |
3513 | offsetT frag_off; | |
3514 | ||
b1766e7c NC |
3515 | #ifdef md_flush_pending_output |
3516 | md_flush_pending_output (); | |
3517 | #endif | |
3518 | ||
3519 | #ifdef md_cons_align | |
3520 | md_cons_align (1); | |
3521 | #endif | |
3522 | ||
3523 | SKIP_WHITESPACE (); | |
058430b4 | 3524 | expression (&exp); |
b1766e7c NC |
3525 | demand_empty_rest_of_line (); |
3526 | ||
058430b4 AM |
3527 | start = frag_now; |
3528 | start_off = frag_now_fix (); | |
3529 | do | |
3530 | { | |
b1766e7c | 3531 | #ifdef md_emit_single_noop |
058430b4 | 3532 | md_emit_single_noop; |
b1766e7c | 3533 | #else |
058430b4 | 3534 | char *nop; |
b1766e7c NC |
3535 | |
3536 | #ifndef md_single_noop_insn | |
3537 | #define md_single_noop_insn "nop" | |
3538 | #endif | |
058430b4 AM |
3539 | /* md_assemble might modify its argument, so |
3540 | we must pass it a string that is writable. */ | |
3541 | if (asprintf (&nop, "%s", md_single_noop_insn) < 0) | |
3542 | as_fatal ("%s", xstrerror (errno)); | |
b1766e7c | 3543 | |
058430b4 AM |
3544 | /* Some targets assume that they can update input_line_pointer |
3545 | inside md_assemble, and, worse, that they can leave it | |
3546 | assigned to the string pointer that was provided as an | |
3547 | argument. So preserve ilp here. */ | |
3548 | char *saved_ilp = input_line_pointer; | |
3549 | md_assemble (nop); | |
3550 | input_line_pointer = saved_ilp; | |
3551 | free (nop); | |
3552 | #endif | |
3553 | #ifdef md_flush_pending_output | |
3554 | md_flush_pending_output (); | |
b1766e7c | 3555 | #endif |
058430b4 AM |
3556 | } while (exp.X_op == O_constant |
3557 | && exp.X_add_number > 0 | |
3558 | && frag_offset_ignore_align_p (start, frag_now, &frag_off) | |
3559 | && frag_off + frag_now_fix () < start_off + exp.X_add_number); | |
b1766e7c NC |
3560 | } |
3561 | ||
62a02d25 | 3562 | void |
8f065d3b | 3563 | s_nops (int ignore ATTRIBUTE_UNUSED) |
62a02d25 L |
3564 | { |
3565 | expressionS exp; | |
3566 | expressionS val; | |
3567 | ||
3568 | #ifdef md_flush_pending_output | |
3569 | md_flush_pending_output (); | |
3570 | #endif | |
3571 | ||
3572 | #ifdef md_cons_align | |
3573 | md_cons_align (1); | |
3574 | #endif | |
3575 | ||
b1766e7c | 3576 | SKIP_WHITESPACE (); |
62a02d25 | 3577 | expression (&exp); |
b1766e7c NC |
3578 | /* Note - this expression is tested for an absolute value in |
3579 | write.c:relax_segment(). */ | |
62a02d25 | 3580 | |
b1766e7c | 3581 | SKIP_WHITESPACE (); |
62a02d25 L |
3582 | if (*input_line_pointer == ',') |
3583 | { | |
3584 | ++input_line_pointer; | |
3585 | expression (&val); | |
3586 | } | |
3587 | else | |
3588 | { | |
3589 | val.X_op = O_constant; | |
3590 | val.X_add_number = 0; | |
3591 | } | |
3592 | ||
b1766e7c | 3593 | if (val.X_op != O_constant) |
62a02d25 | 3594 | { |
b1766e7c NC |
3595 | as_bad (_("unsupported variable nop control in .nops directive")); |
3596 | val.X_op = O_constant; | |
3597 | val.X_add_number = 0; | |
3598 | } | |
3599 | else if (val.X_add_number < 0) | |
3600 | { | |
3601 | as_warn (_("negative nop control byte, ignored")); | |
3602 | val.X_add_number = 0; | |
62a02d25 | 3603 | } |
62a02d25 L |
3604 | |
3605 | demand_empty_rest_of_line (); | |
b1766e7c NC |
3606 | |
3607 | if (need_pass_2) | |
3608 | /* Ignore this directive if we are going to perform a second pass. */ | |
3609 | return; | |
3610 | ||
3611 | /* Store the no-op instruction control byte in the first byte of frag. */ | |
3612 | char *p; | |
3613 | symbolS *sym = make_expr_symbol (&exp); | |
3614 | p = frag_var (rs_space_nop, 1, 1, (relax_substateT) 0, | |
3615 | sym, (offsetT) 0, (char *) 0); | |
3616 | *p = val.X_add_number; | |
62a02d25 L |
3617 | } |
3618 | ||
bb32eac5 JB |
3619 | static int |
3620 | parse_one_float (int float_type, char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]) | |
3621 | { | |
3622 | int length; | |
3623 | ||
3624 | SKIP_WHITESPACE (); | |
3625 | ||
3626 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3627 | letter is legal. Someone may invent a "z" format and this routine | |
3628 | has no use for such information. Lusers beware: you get | |
3629 | diagnostics if your input is ill-conditioned. */ | |
3630 | if (input_line_pointer[0] == '0' | |
3631 | && ISALPHA (input_line_pointer[1])) | |
3632 | input_line_pointer += 2; | |
3633 | ||
3634 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3635 | with the exact digits specified. */ | |
3636 | if (input_line_pointer[0] == ':') | |
3637 | { | |
3638 | ++input_line_pointer; | |
3639 | length = hex_float (float_type, temp); | |
3640 | if (length < 0) | |
3641 | { | |
3642 | ignore_rest_of_line (); | |
3643 | return length; | |
3644 | } | |
3645 | } | |
3646 | else | |
3647 | { | |
3648 | const char *err; | |
3649 | ||
3650 | err = md_atof (float_type, temp, &length); | |
3651 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3652 | know (err != NULL || length > 0); | |
3653 | if (err) | |
3654 | { | |
3655 | as_bad (_("bad floating literal: %s"), err); | |
3656 | ignore_rest_of_line (); | |
3657 | return -1; | |
3658 | } | |
3659 | } | |
3660 | ||
3661 | return length; | |
3662 | } | |
3663 | ||
252b5132 RH |
3664 | /* This is like s_space, but the value is a floating point number with |
3665 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3666 | friends. */ | |
3667 | ||
3668 | void | |
39e6acbd | 3669 | s_float_space (int float_type) |
252b5132 RH |
3670 | { |
3671 | offsetT count; | |
3672 | int flen; | |
3673 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3674 | char *stop = NULL; | |
fb25138b | 3675 | char stopc = 0; |
252b5132 | 3676 | |
cc3f603a JM |
3677 | #ifdef md_cons_align |
3678 | md_cons_align (1); | |
3679 | #endif | |
3680 | ||
252b5132 RH |
3681 | if (flag_mri) |
3682 | stop = mri_comment_field (&stopc); | |
3683 | ||
3684 | count = get_absolute_expression (); | |
3685 | ||
3686 | SKIP_WHITESPACE (); | |
3687 | if (*input_line_pointer != ',') | |
3688 | { | |
3689 | as_bad (_("missing value")); | |
3690 | ignore_rest_of_line (); | |
3691 | if (flag_mri) | |
3692 | mri_comment_end (stop, stopc); | |
3693 | return; | |
3694 | } | |
3695 | ||
3696 | ++input_line_pointer; | |
3697 | ||
bb32eac5 JB |
3698 | flen = parse_one_float (float_type, temp); |
3699 | if (flen < 0) | |
252b5132 | 3700 | { |
bb32eac5 JB |
3701 | if (flag_mri) |
3702 | mri_comment_end (stop, stopc); | |
3703 | return; | |
252b5132 RH |
3704 | } |
3705 | ||
3706 | while (--count >= 0) | |
3707 | { | |
3708 | char *p; | |
3709 | ||
3710 | p = frag_more (flen); | |
3711 | memcpy (p, temp, (unsigned int) flen); | |
3712 | } | |
3713 | ||
3714 | demand_empty_rest_of_line (); | |
3715 | ||
3716 | if (flag_mri) | |
3717 | mri_comment_end (stop, stopc); | |
3718 | } | |
3719 | ||
3720 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3721 | ||
3722 | void | |
39e6acbd | 3723 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3724 | { |
3725 | char *stop = NULL; | |
fb25138b | 3726 | char stopc = 0; |
252b5132 RH |
3727 | |
3728 | if (flag_mri) | |
3729 | stop = mri_comment_field (&stopc); | |
3730 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3731 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3732 | /* The ELF backend needs to know that we are changing sections, so | |
3733 | that .previous works correctly. */ | |
f43abd2b | 3734 | if (IS_ELF) |
a2902af6 TS |
3735 | obj_elf_section_change_hook (); |
3736 | #endif | |
252b5132 RH |
3737 | subseg_set (absolute_section, 0); |
3738 | demand_empty_rest_of_line (); | |
3739 | if (flag_mri) | |
3740 | mri_comment_end (stop, stopc); | |
3741 | } | |
3742 | ||
3743 | void | |
39e6acbd | 3744 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3745 | { |
3d540e93 | 3746 | int temp; |
252b5132 RH |
3747 | |
3748 | temp = get_absolute_expression (); | |
3749 | subseg_set (text_section, (subsegT) temp); | |
3750 | demand_empty_rest_of_line (); | |
041ff4dd | 3751 | } |
06e77878 AO |
3752 | |
3753 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3754 | referenced directly, will cause y to become a weak symbol. */ | |
3755 | void | |
3756 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3757 | { | |
3758 | char *name; | |
06e77878 AO |
3759 | symbolS *symbolP; |
3760 | symbolS *symbolP2; | |
3761 | expressionS exp; | |
3762 | ||
7bfd842d NC |
3763 | if ((name = read_symbol_name ()) == NULL) |
3764 | return; | |
06e77878 AO |
3765 | |
3766 | symbolP = symbol_find_or_make (name); | |
3767 | ||
b54788f8 AO |
3768 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3769 | { | |
89cdfe57 | 3770 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3771 | { |
3772 | as_bad (_("symbol `%s' is already defined"), name); | |
7bfd842d | 3773 | goto err_out; |
92757bc9 | 3774 | } |
89cdfe57 | 3775 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3776 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3777 | } |
3778 | ||
06e77878 AO |
3779 | SKIP_WHITESPACE (); |
3780 | ||
3781 | if (*input_line_pointer != ',') | |
3782 | { | |
06e77878 | 3783 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 3784 | goto err_out; |
06e77878 AO |
3785 | } |
3786 | ||
3787 | input_line_pointer++; | |
3788 | ||
3789 | SKIP_WHITESPACE (); | |
7bfd842d | 3790 | free (name); |
06e77878 | 3791 | |
7bfd842d NC |
3792 | if ((name = read_symbol_name ()) == NULL) |
3793 | return; | |
06e77878 AO |
3794 | |
3795 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3796 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3797 | { | |
3798 | symbolP2 = symbol_find_or_make (name); | |
3799 | S_SET_WEAKREFD (symbolP2); | |
3800 | } | |
3801 | else | |
3802 | { | |
3803 | symbolS *symp = symbolP2; | |
3804 | ||
3805 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3806 | { | |
3807 | expressionS *expP = symbol_get_value_expression (symp); | |
3808 | ||
9c2799c2 | 3809 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3810 | && expP->X_add_number == 0); |
3811 | symp = expP->X_add_symbol; | |
3812 | } | |
3813 | if (symp == symbolP) | |
3814 | { | |
3815 | char *loop; | |
3816 | ||
3817 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3818 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3819 | |
3820 | symp = symbolP2; | |
3821 | while (symp != symbolP) | |
3822 | { | |
3823 | char *old_loop = loop; | |
7bfd842d | 3824 | |
06e77878 | 3825 | symp = symbol_get_value_expression (symp)->X_add_symbol; |
1bf57e9f AM |
3826 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3827 | (const char *) NULL); | |
06e77878 AO |
3828 | free (old_loop); |
3829 | } | |
3830 | ||
3831 | as_bad (_("%s: would close weakref loop: %s"), | |
3832 | S_GET_NAME (symbolP), loop); | |
3833 | ||
3834 | free (loop); | |
7bfd842d | 3835 | free (name); |
06e77878 AO |
3836 | ignore_rest_of_line (); |
3837 | return; | |
3838 | } | |
3839 | ||
3840 | /* Short-circuiting instead of just checking here might speed | |
3841 | things up a tiny little bit, but loop error messages would | |
3842 | miss intermediate links. */ | |
3843 | /* symbolP2 = symp; */ | |
3844 | } | |
3845 | ||
06e77878 AO |
3846 | memset (&exp, 0, sizeof (exp)); |
3847 | exp.X_op = O_symbol; | |
3848 | exp.X_add_symbol = symbolP2; | |
3849 | ||
3850 | S_SET_SEGMENT (symbolP, undefined_section); | |
3851 | symbol_set_value_expression (symbolP, &exp); | |
3852 | symbol_set_frag (symbolP, &zero_address_frag); | |
3853 | S_SET_WEAKREFR (symbolP); | |
3854 | ||
3855 | demand_empty_rest_of_line (); | |
7bfd842d NC |
3856 | free (name); |
3857 | return; | |
3858 | ||
3859 | err_out: | |
3860 | ignore_rest_of_line (); | |
3861 | free (name); | |
3862 | return; | |
06e77878 | 3863 | } |
252b5132 | 3864 | \f |
c95b35a9 NS |
3865 | |
3866 | /* Verify that we are at the end of a line. If not, issue an error and | |
3867 | skip to EOL. */ | |
3868 | ||
041ff4dd | 3869 | void |
39e6acbd | 3870 | demand_empty_rest_of_line (void) |
252b5132 RH |
3871 | { |
3872 | SKIP_WHITESPACE (); | |
3873 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3874 | input_line_pointer++; |
252b5132 | 3875 | else |
252b5132 | 3876 | { |
3882b010 | 3877 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3878 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3879 | *input_line_pointer); |
252b5132 | 3880 | else |
c95b35a9 | 3881 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3882 | *input_line_pointer); |
c95b35a9 | 3883 | ignore_rest_of_line (); |
252b5132 | 3884 | } |
fa94de6b | 3885 | |
c95b35a9 NS |
3886 | /* Return pointing just after end-of-line. */ |
3887 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3888 | } | |
3889 | ||
3890 | /* Silently advance to the end of line. Use this after already having | |
3891 | issued an error about something bad. */ | |
3892 | ||
3893 | void | |
3894 | ignore_rest_of_line (void) | |
3895 | { | |
3896 | while (input_line_pointer < buffer_limit | |
3897 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3898 | input_line_pointer++; | |
f0e652b4 | 3899 | |
041ff4dd NC |
3900 | input_line_pointer++; |
3901 | ||
3902 | /* Return pointing just after end-of-line. */ | |
3076e594 NC |
3903 | if (input_line_pointer <= buffer_limit) |
3904 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
252b5132 RH |
3905 | } |
3906 | ||
be95a9c1 AM |
3907 | /* Sets frag for given symbol to zero_address_frag, except when the |
3908 | symbol frag is already set to a dummy listing frag. */ | |
3909 | ||
3910 | static void | |
3911 | set_zero_frag (symbolS *symbolP) | |
3912 | { | |
3913 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3914 | symbol_set_frag (symbolP, &zero_address_frag); | |
3915 | } | |
3916 | ||
041ff4dd | 3917 | /* In: Pointer to a symbol. |
d6415f6c | 3918 | Input_line_pointer->expression. |
f0e652b4 | 3919 | |
041ff4dd | 3920 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3921 | Tried to set symbol to value of expression. |
3922 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3923 | |
252b5132 | 3924 | void |
39e6acbd | 3925 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3926 | { |
3927 | expressionS exp; | |
be95a9c1 | 3928 | segT seg; |
252b5132 | 3929 | |
041ff4dd | 3930 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3931 | |
9497f5ac NC |
3932 | if (!S_IS_FORWARD_REF (symbolP)) |
3933 | (void) expression (&exp); | |
3934 | else | |
3935 | (void) deferred_expression (&exp); | |
252b5132 RH |
3936 | |
3937 | if (exp.X_op == O_illegal) | |
0e389e77 | 3938 | as_bad (_("illegal expression")); |
252b5132 | 3939 | else if (exp.X_op == O_absent) |
0e389e77 | 3940 | as_bad (_("missing expression")); |
252b5132 RH |
3941 | else if (exp.X_op == O_big) |
3942 | { | |
3943 | if (exp.X_add_number > 0) | |
0e389e77 | 3944 | as_bad (_("bignum invalid")); |
252b5132 | 3945 | else |
0e389e77 | 3946 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3947 | } |
3948 | else if (exp.X_op == O_subtract | |
9497f5ac | 3949 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3950 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3951 | && (symbol_get_frag (exp.X_add_symbol) |
3952 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3953 | { |
3954 | exp.X_op = O_constant; | |
3955 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3956 | - S_GET_VALUE (exp.X_op_symbol)); | |
3957 | } | |
3958 | ||
be95a9c1 AM |
3959 | if (symbol_section_p (symbolP)) |
3960 | { | |
3961 | as_bad ("attempt to set value of section symbol"); | |
3962 | return; | |
3963 | } | |
be95a9c1 | 3964 | |
252b5132 RH |
3965 | switch (exp.X_op) |
3966 | { | |
3967 | case O_illegal: | |
3968 | case O_absent: | |
3969 | case O_big: | |
3970 | exp.X_add_number = 0; | |
3971 | /* Fall through. */ | |
3972 | case O_constant: | |
3973 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3974 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3975 | set_zero_frag (symbolP); |
252b5132 RH |
3976 | break; |
3977 | ||
3978 | case O_register: | |
97c4f2d9 | 3979 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3980 | if (S_IS_EXTERNAL (symbolP)) |
3981 | { | |
3982 | as_bad ("can't equate global symbol `%s' with register name", | |
3983 | S_GET_NAME (symbolP)); | |
3984 | return; | |
3985 | } | |
97c4f2d9 | 3986 | #endif |
252b5132 RH |
3987 | S_SET_SEGMENT (symbolP, reg_section); |
3988 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3989 | set_zero_frag (symbolP); |
db557034 | 3990 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3991 | break; |
3992 | ||
3993 | case O_symbol: | |
be95a9c1 AM |
3994 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3995 | /* For x=undef+const, create an expression symbol. | |
3996 | For x=x+const, just update x except when x is an undefined symbol | |
3997 | For x=defined+const, evaluate x. */ | |
3998 | if (symbolP == exp.X_add_symbol | |
3999 | && (seg != undefined_section | |
4000 | || !symbol_constant_p (symbolP))) | |
4001 | { | |
4002 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
4003 | break; | |
4004 | } | |
9497f5ac | 4005 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
4006 | { |
4007 | symbolS *s = exp.X_add_symbol; | |
4008 | ||
60938e80 | 4009 | if (S_IS_COMMON (s)) |
76db0a2e | 4010 | as_bad (_("`%s' can't be equated to common symbol `%s'"), |
60938e80 L |
4011 | S_GET_NAME (symbolP), S_GET_NAME (s)); |
4012 | ||
be95a9c1 AM |
4013 | S_SET_SEGMENT (symbolP, seg); |
4014 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 4015 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 4016 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 4017 | break; |
252b5132 | 4018 | } |
66bd02d3 AM |
4019 | S_SET_SEGMENT (symbolP, undefined_section); |
4020 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 4021 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
4022 | set_zero_frag (symbolP); |
4023 | break; | |
252b5132 RH |
4024 | |
4025 | default: | |
aba4aa7d AM |
4026 | /* The value is some complex expression. */ |
4027 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 4028 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 4029 | set_zero_frag (symbolP); |
252b5132 RH |
4030 | break; |
4031 | } | |
4032 | } | |
4033 | \f | |
d6415f6c | 4034 | /* cons() |
f0e652b4 | 4035 | |
041ff4dd NC |
4036 | CONStruct more frag of .bytes, or .words etc. |
4037 | Should need_pass_2 be 1 then emit no frag(s). | |
4038 | This understands EXPRESSIONS. | |
f0e652b4 | 4039 | |
041ff4dd | 4040 | Bug (?) |
f0e652b4 | 4041 | |
041ff4dd NC |
4042 | This has a split personality. We use expression() to read the |
4043 | value. We can detect if the value won't fit in a byte or word. | |
4044 | But we can't detect if expression() discarded significant digits | |
4045 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
4046 | |
4047 | /* Select a parser for cons expressions. */ | |
4048 | ||
4049 | /* Some targets need to parse the expression in various fancy ways. | |
4050 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
4051 | (for example, the HPPA does this). Otherwise, you can define | |
252b5132 RH |
4052 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these |
4053 | are defined, which is the normal case, then only simple expressions | |
4054 | are permitted. */ | |
4055 | ||
abd63a32 | 4056 | #ifdef TC_M68K |
252b5132 | 4057 | static void |
39e6acbd | 4058 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 4059 | #endif |
252b5132 RH |
4060 | |
4061 | #ifndef TC_PARSE_CONS_EXPRESSION | |
252b5132 | 4062 | #ifdef REPEAT_CONS_EXPRESSIONS |
62ebcb5c AM |
4063 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
4064 | (parse_repeat_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 | 4065 | static void |
39e6acbd | 4066 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
4067 | #endif |
4068 | ||
4069 | /* If we haven't gotten one yet, just call expression. */ | |
4070 | #ifndef TC_PARSE_CONS_EXPRESSION | |
62ebcb5c AM |
4071 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
4072 | (expression (EXP), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 RH |
4073 | #endif |
4074 | #endif | |
4075 | ||
cdfbf930 | 4076 | void |
b41b1f95 L |
4077 | do_parse_cons_expression (expressionS *exp, |
4078 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 | 4079 | { |
62ebcb5c | 4080 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
cdfbf930 RH |
4081 | } |
4082 | ||
4083 | ||
041ff4dd NC |
4084 | /* Worker to do .byte etc statements. |
4085 | Clobbers input_line_pointer and checks end-of-line. */ | |
4086 | ||
4087 | static void | |
3d540e93 | 4088 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 4089 | int rva) |
252b5132 RH |
4090 | { |
4091 | int c; | |
4092 | expressionS exp; | |
4093 | char *stop = NULL; | |
fb25138b | 4094 | char stopc = 0; |
252b5132 RH |
4095 | |
4096 | #ifdef md_flush_pending_output | |
4097 | md_flush_pending_output (); | |
4098 | #endif | |
4099 | ||
4100 | if (flag_mri) | |
4101 | stop = mri_comment_field (&stopc); | |
4102 | ||
4103 | if (is_it_end_of_statement ()) | |
4104 | { | |
4105 | demand_empty_rest_of_line (); | |
4106 | if (flag_mri) | |
4107 | mri_comment_end (stop, stopc); | |
4108 | return; | |
4109 | } | |
4110 | ||
cc1bc22a AM |
4111 | if (nbytes == 0) |
4112 | nbytes = TC_ADDRESS_BYTES (); | |
cc1bc22a | 4113 | |
252b5132 RH |
4114 | #ifdef md_cons_align |
4115 | md_cons_align (nbytes); | |
4116 | #endif | |
4117 | ||
4118 | c = 0; | |
4119 | do | |
4120 | { | |
62ebcb5c | 4121 | TC_PARSE_CONS_RETURN_TYPE ret = TC_PARSE_CONS_RETURN_NONE; |
bf7279d5 AM |
4122 | #ifdef TC_CONS_FIX_CHECK |
4123 | fixS **cur_fix = &frchain_now->fix_tail; | |
4124 | ||
4125 | if (*cur_fix != NULL) | |
4126 | cur_fix = &(*cur_fix)->fx_next; | |
4127 | #endif | |
62ebcb5c | 4128 | |
abd63a32 | 4129 | #ifdef TC_M68K |
252b5132 RH |
4130 | if (flag_m68k_mri) |
4131 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
4132 | else | |
abd63a32 | 4133 | #endif |
fa94de6b | 4134 | { |
d02603dc | 4135 | #if 0 |
847d4311 NS |
4136 | if (*input_line_pointer == '"') |
4137 | { | |
4138 | as_bad (_("unexpected `\"' in expression")); | |
4139 | ignore_rest_of_line (); | |
4140 | return; | |
4141 | } | |
d02603dc | 4142 | #endif |
62ebcb5c | 4143 | ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
847d4311 | 4144 | } |
252b5132 RH |
4145 | |
4146 | if (rva) | |
4147 | { | |
4148 | if (exp.X_op == O_symbol) | |
4149 | exp.X_op = O_symbol_rva; | |
4150 | else | |
4151 | as_fatal (_("rva without symbol")); | |
4152 | } | |
62ebcb5c | 4153 | emit_expr_with_reloc (&exp, (unsigned int) nbytes, ret); |
bf7279d5 AM |
4154 | #ifdef TC_CONS_FIX_CHECK |
4155 | TC_CONS_FIX_CHECK (&exp, nbytes, *cur_fix); | |
4156 | #endif | |
252b5132 RH |
4157 | ++c; |
4158 | } | |
4159 | while (*input_line_pointer++ == ','); | |
4160 | ||
4161 | /* In MRI mode, after an odd number of bytes, we must align to an | |
4162 | even word boundary, unless the next instruction is a dc.b, ds.b | |
4163 | or dcb.b. */ | |
4164 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
4165 | mri_pending_align = 1; | |
4166 | ||
041ff4dd | 4167 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
4168 | |
4169 | demand_empty_rest_of_line (); | |
4170 | ||
4171 | if (flag_mri) | |
4172 | mri_comment_end (stop, stopc); | |
4173 | } | |
4174 | ||
252b5132 | 4175 | void |
39e6acbd | 4176 | cons (int size) |
252b5132 RH |
4177 | { |
4178 | cons_worker (size, 0); | |
4179 | } | |
4180 | ||
041ff4dd | 4181 | void |
39e6acbd | 4182 | s_rva (int size) |
252b5132 RH |
4183 | { |
4184 | cons_worker (size, 1); | |
4185 | } | |
4186 | ||
05e9452c AM |
4187 | /* .reloc offset, reloc_name, symbol+addend. */ |
4188 | ||
b38ead21 | 4189 | static void |
05e9452c AM |
4190 | s_reloc (int ignore ATTRIBUTE_UNUSED) |
4191 | { | |
4192 | char *stop = NULL; | |
4193 | char stopc = 0; | |
4194 | expressionS exp; | |
4195 | char *r_name; | |
4196 | int c; | |
4197 | struct reloc_list *reloc; | |
cd0bbe6e TS |
4198 | struct _bfd_rel { const char * name; bfd_reloc_code_real_type code; }; |
4199 | static struct _bfd_rel bfd_relocs[] = | |
4200 | { | |
740bdc67 | 4201 | { "NONE", BFD_RELOC_NONE }, |
cd0bbe6e | 4202 | { "8", BFD_RELOC_8 }, |
740bdc67 AM |
4203 | { "16", BFD_RELOC_16 }, |
4204 | { "32", BFD_RELOC_32 }, | |
4205 | { "64", BFD_RELOC_64 } | |
4206 | }; | |
05e9452c | 4207 | |
8860a416 | 4208 | reloc = XNEW (struct reloc_list); |
05e9452c AM |
4209 | |
4210 | if (flag_mri) | |
4211 | stop = mri_comment_field (&stopc); | |
4212 | ||
4213 | expression (&exp); | |
4214 | switch (exp.X_op) | |
4215 | { | |
4216 | case O_illegal: | |
4217 | case O_absent: | |
4218 | case O_big: | |
4219 | case O_register: | |
4220 | as_bad (_("missing or bad offset expression")); | |
4221 | goto err_out; | |
4222 | case O_constant: | |
4223 | exp.X_add_symbol = section_symbol (now_seg); | |
d1bcae83 L |
4224 | /* Mark the section symbol used in relocation so that it will be |
4225 | included in the symbol table. */ | |
4226 | symbol_mark_used_in_reloc (exp.X_add_symbol); | |
05e9452c | 4227 | exp.X_op = O_symbol; |
2b0f3761 | 4228 | /* Fallthru */ |
05e9452c AM |
4229 | case O_symbol: |
4230 | if (exp.X_add_number == 0) | |
4231 | { | |
4232 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
4233 | break; | |
4234 | } | |
2b0f3761 | 4235 | /* Fallthru */ |
05e9452c AM |
4236 | default: |
4237 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
4238 | break; | |
4239 | } | |
4240 | ||
4241 | SKIP_WHITESPACE (); | |
4242 | if (*input_line_pointer != ',') | |
4243 | { | |
4244 | as_bad (_("missing reloc type")); | |
4245 | goto err_out; | |
4246 | } | |
4247 | ||
4248 | ++input_line_pointer; | |
4249 | SKIP_WHITESPACE (); | |
d02603dc | 4250 | c = get_symbol_name (& r_name); |
740bdc67 AM |
4251 | if (strncasecmp (r_name, "BFD_RELOC_", 10) == 0) |
4252 | { | |
4253 | unsigned int i; | |
4254 | ||
4255 | for (reloc->u.a.howto = NULL, i = 0; i < ARRAY_SIZE (bfd_relocs); i++) | |
4256 | if (strcasecmp (r_name + 10, bfd_relocs[i].name) == 0) | |
4257 | { | |
4258 | reloc->u.a.howto = bfd_reloc_type_lookup (stdoutput, | |
4259 | bfd_relocs[i].code); | |
4260 | break; | |
4261 | } | |
4262 | } | |
4263 | else | |
4264 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
05e9452c AM |
4265 | *input_line_pointer = c; |
4266 | if (reloc->u.a.howto == NULL) | |
4267 | { | |
4268 | as_bad (_("unrecognized reloc type")); | |
4269 | goto err_out; | |
4270 | } | |
4271 | ||
4272 | exp.X_op = O_absent; | |
d02603dc | 4273 | SKIP_WHITESPACE_AFTER_NAME (); |
05e9452c AM |
4274 | if (*input_line_pointer == ',') |
4275 | { | |
4276 | ++input_line_pointer; | |
c188d0bb | 4277 | expression (&exp); |
05e9452c AM |
4278 | } |
4279 | switch (exp.X_op) | |
4280 | { | |
4281 | case O_illegal: | |
4282 | case O_big: | |
4283 | case O_register: | |
4284 | as_bad (_("bad reloc expression")); | |
4285 | err_out: | |
4286 | ignore_rest_of_line (); | |
4287 | free (reloc); | |
4288 | if (flag_mri) | |
4289 | mri_comment_end (stop, stopc); | |
4290 | return; | |
4291 | case O_absent: | |
4292 | reloc->u.a.sym = NULL; | |
4293 | reloc->u.a.addend = 0; | |
4294 | break; | |
4295 | case O_constant: | |
4296 | reloc->u.a.sym = NULL; | |
4297 | reloc->u.a.addend = exp.X_add_number; | |
4298 | break; | |
4299 | case O_symbol: | |
4300 | reloc->u.a.sym = exp.X_add_symbol; | |
4301 | reloc->u.a.addend = exp.X_add_number; | |
4302 | break; | |
4303 | default: | |
4304 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4305 | reloc->u.a.addend = 0; | |
4306 | break; | |
4307 | } | |
4308 | ||
3b4dbbbf | 4309 | reloc->file = as_where (&reloc->line); |
05e9452c AM |
4310 | reloc->next = reloc_list; |
4311 | reloc_list = reloc; | |
4312 | ||
4313 | demand_empty_rest_of_line (); | |
4314 | if (flag_mri) | |
4315 | mri_comment_end (stop, stopc); | |
4316 | } | |
4317 | ||
252b5132 RH |
4318 | /* Put the contents of expression EXP into the object file using |
4319 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4320 | ||
4321 | void | |
39e6acbd | 4322 | emit_expr (expressionS *exp, unsigned int nbytes) |
62ebcb5c AM |
4323 | { |
4324 | emit_expr_with_reloc (exp, nbytes, TC_PARSE_CONS_RETURN_NONE); | |
4325 | } | |
4326 | ||
4327 | void | |
4328 | emit_expr_with_reloc (expressionS *exp, | |
4329 | unsigned int nbytes, | |
4330 | TC_PARSE_CONS_RETURN_TYPE reloc) | |
252b5132 RH |
4331 | { |
4332 | operatorT op; | |
3d540e93 | 4333 | char *p; |
252b5132 RH |
4334 | valueT extra_digit = 0; |
4335 | ||
4336 | /* Don't do anything if we are going to make another pass. */ | |
4337 | if (need_pass_2) | |
4338 | return; | |
4339 | ||
4bc25101 | 4340 | frag_grow (nbytes); |
ed7d5d1a | 4341 | dot_value = frag_now_fix (); |
8e723a10 | 4342 | dot_frag = frag_now; |
ed7d5d1a | 4343 | |
252b5132 RH |
4344 | #ifndef NO_LISTING |
4345 | #ifdef OBJ_ELF | |
4346 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4347 | appear as a four byte positive constant in the .line section, | |
4348 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4349 | { | |
4350 | static int dwarf_line = -1; | |
4351 | ||
4352 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4353 | dwarf_line = -1; | |
4354 | else if (dwarf_line >= 0 | |
4355 | && nbytes == 2 | |
4356 | && exp->X_op == O_constant | |
4357 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4358 | listing_source_line ((unsigned int) dwarf_line); | |
4359 | else if (nbytes == 4 | |
4360 | && exp->X_op == O_constant | |
4361 | && exp->X_add_number >= 0) | |
4362 | dwarf_line = exp->X_add_number; | |
4363 | else | |
4364 | dwarf_line = -1; | |
4365 | } | |
4366 | ||
4367 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4368 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4369 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4370 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4371 | file. We look for that case here. */ | |
4372 | { | |
4373 | static int dwarf_file = 0; | |
4374 | ||
4375 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4376 | dwarf_file = 0; | |
4377 | else if (dwarf_file == 0 | |
4378 | && nbytes == 2 | |
4379 | && exp->X_op == O_constant | |
4380 | && exp->X_add_number == 0x11) | |
4381 | dwarf_file = 1; | |
4382 | else if (dwarf_file == 1 | |
4383 | && nbytes == 2 | |
4384 | && exp->X_op == O_constant | |
4385 | && exp->X_add_number == 0x12) | |
4386 | dwarf_file = 2; | |
4387 | else if (dwarf_file == 2 | |
4388 | && nbytes == 4) | |
4389 | dwarf_file = 3; | |
4390 | else if (dwarf_file == 3 | |
4391 | && nbytes == 2 | |
4392 | && exp->X_op == O_constant | |
4393 | && exp->X_add_number == 0x38) | |
4394 | dwarf_file = 4; | |
4395 | else | |
4396 | dwarf_file = 0; | |
4397 | ||
4398 | /* The variable dwarf_file_string tells stringer that the string | |
4399 | may be the name of the source file. */ | |
4400 | if (dwarf_file == 4) | |
4401 | dwarf_file_string = 1; | |
4402 | else | |
4403 | dwarf_file_string = 0; | |
4404 | } | |
4405 | #endif | |
4406 | #endif | |
4407 | ||
4408 | if (check_eh_frame (exp, &nbytes)) | |
4409 | return; | |
4410 | ||
4411 | op = exp->X_op; | |
4412 | ||
252b5132 RH |
4413 | /* Handle a negative bignum. */ |
4414 | if (op == O_uminus | |
4415 | && exp->X_add_number == 0 | |
2b47531b ILT |
4416 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4417 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4418 | { |
4419 | int i; | |
4420 | unsigned long carry; | |
4421 | ||
2b47531b | 4422 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4423 | |
4424 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4425 | carry = 1; | |
4426 | for (i = 0; i < exp->X_add_number; i++) | |
4427 | { | |
4428 | unsigned long next; | |
4429 | ||
041ff4dd | 4430 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4431 | & LITTLENUM_MASK) |
4432 | + carry); | |
4433 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4434 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4435 | } | |
4436 | ||
4437 | /* We can ignore any carry out, because it will be handled by | |
4438 | extra_digit if it is needed. */ | |
4439 | ||
4440 | extra_digit = (valueT) -1; | |
4441 | op = O_big; | |
4442 | } | |
4443 | ||
4444 | if (op == O_absent || op == O_illegal) | |
4445 | { | |
4446 | as_warn (_("zero assumed for missing expression")); | |
4447 | exp->X_add_number = 0; | |
4448 | op = O_constant; | |
4449 | } | |
4450 | else if (op == O_big && exp->X_add_number <= 0) | |
4451 | { | |
0e389e77 | 4452 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4453 | exp->X_add_number = 0; |
4454 | op = O_constant; | |
4455 | } | |
4456 | else if (op == O_register) | |
4457 | { | |
4458 | as_warn (_("register value used as expression")); | |
4459 | op = O_constant; | |
4460 | } | |
4461 | ||
ec9ab52c JB |
4462 | /* Allow `.word 0' in the absolute section. */ |
4463 | if (now_seg == absolute_section) | |
4464 | { | |
4465 | if (op != O_constant || exp->X_add_number != 0) | |
4466 | as_bad (_("attempt to store value in absolute section")); | |
4467 | abs_section_offset += nbytes; | |
4468 | return; | |
4469 | } | |
4470 | ||
4471 | /* Allow `.word 0' in BSS style sections. */ | |
4472 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
4473 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
4474 | segment_name (now_seg)); | |
4475 | ||
252b5132 RH |
4476 | p = frag_more ((int) nbytes); |
4477 | ||
62ebcb5c AM |
4478 | if (reloc != TC_PARSE_CONS_RETURN_NONE) |
4479 | { | |
4480 | emit_expr_fix (exp, nbytes, frag_now, p, reloc); | |
4481 | return; | |
4482 | } | |
4483 | ||
252b5132 RH |
4484 | #ifndef WORKING_DOT_WORD |
4485 | /* If we have the difference of two symbols in a word, save it on | |
4486 | the broken_words list. See the code in write.c. */ | |
4487 | if (op == O_subtract && nbytes == 2) | |
4488 | { | |
4489 | struct broken_word *x; | |
4490 | ||
8860a416 | 4491 | x = XNEW (struct broken_word); |
252b5132 RH |
4492 | x->next_broken_word = broken_words; |
4493 | broken_words = x; | |
4494 | x->seg = now_seg; | |
4495 | x->subseg = now_subseg; | |
4496 | x->frag = frag_now; | |
4497 | x->word_goes_here = p; | |
4498 | x->dispfrag = 0; | |
4499 | x->add = exp->X_add_symbol; | |
4500 | x->sub = exp->X_op_symbol; | |
4501 | x->addnum = exp->X_add_number; | |
4502 | x->added = 0; | |
dc59a897 | 4503 | x->use_jump = 0; |
252b5132 RH |
4504 | new_broken_words++; |
4505 | return; | |
4506 | } | |
4507 | #endif | |
4508 | ||
4509 | /* If we have an integer, but the number of bytes is too large to | |
4510 | pass to md_number_to_chars, handle it as a bignum. */ | |
4511 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4512 | { | |
e5604d79 | 4513 | extra_digit = exp->X_unsigned ? 0 : -1; |
956a6ba3 | 4514 | convert_to_bignum (exp, !exp->X_unsigned); |
e5604d79 | 4515 | op = O_big; |
252b5132 RH |
4516 | } |
4517 | ||
4518 | if (op == O_constant) | |
4519 | { | |
3d540e93 NC |
4520 | valueT get; |
4521 | valueT use; | |
4522 | valueT mask; | |
3d540e93 | 4523 | valueT unmask; |
252b5132 RH |
4524 | |
4525 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4526 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4527 | if (nbytes >= sizeof (valueT)) |
4528 | { | |
4504a634 | 4529 | know (nbytes == sizeof (valueT)); |
252b5132 | 4530 | mask = 0; |
252b5132 RH |
4531 | } |
4532 | else | |
4533 | { | |
041ff4dd | 4534 | /* Don't store these bits. */ |
252b5132 | 4535 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
252b5132 RH |
4536 | } |
4537 | ||
041ff4dd | 4538 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4539 | |
4540 | #ifdef NEVER | |
4541 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4542 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4543 | #endif |
4544 | ||
4545 | get = exp->X_add_number; | |
4546 | use = get & unmask; | |
4504a634 | 4547 | if ((get & mask) != 0 && (-get & mask) != 0) |
5f2b6bc9 NC |
4548 | { |
4549 | /* Leading bits contain both 0s & 1s. */ | |
987610f2 JB |
4550 | as_warn (_("value 0x%" BFD_VMA_FMT "x truncated to 0x%" BFD_VMA_FMT "x"), |
4551 | get, use); | |
252b5132 | 4552 | } |
041ff4dd | 4553 | /* Put bytes in right order. */ |
252b5132 RH |
4554 | md_number_to_chars (p, use, (int) nbytes); |
4555 | } | |
4556 | else if (op == O_big) | |
4557 | { | |
4558 | unsigned int size; | |
4559 | LITTLENUM_TYPE *nums; | |
4560 | ||
252b5132 RH |
4561 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4562 | if (nbytes < size) | |
4563 | { | |
93d90f46 | 4564 | int i = nbytes / CHARS_PER_LITTLENUM; |
5f2b6bc9 | 4565 | |
93d90f46 AM |
4566 | if (i != 0) |
4567 | { | |
4568 | LITTLENUM_TYPE sign = 0; | |
4569 | if ((generic_bignum[--i] | |
4570 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4571 | sign = ~(LITTLENUM_TYPE) 0; | |
5f2b6bc9 | 4572 | |
93d90f46 AM |
4573 | while (++i < exp->X_add_number) |
4574 | if (generic_bignum[i] != sign) | |
4575 | break; | |
4576 | } | |
5f2b6bc9 NC |
4577 | else if (nbytes == 1) |
4578 | { | |
4579 | /* We have nbytes == 1 and CHARS_PER_LITTLENUM == 2 (probably). | |
4580 | Check that bits 8.. of generic_bignum[0] match bit 7 | |
4581 | and that they match all of generic_bignum[1..exp->X_add_number]. */ | |
4582 | LITTLENUM_TYPE sign = (generic_bignum[0] & (1 << 7)) ? -1 : 0; | |
4583 | LITTLENUM_TYPE himask = LITTLENUM_MASK & ~ 0xFF; | |
4584 | ||
4585 | if ((generic_bignum[0] & himask) == (sign & himask)) | |
4586 | { | |
4587 | while (++i < exp->X_add_number) | |
4588 | if (generic_bignum[i] != sign) | |
4589 | break; | |
4590 | } | |
4591 | } | |
4592 | ||
93d90f46 | 4593 | if (i < exp->X_add_number) |
992a06ee AM |
4594 | as_warn (ngettext ("bignum truncated to %d byte", |
4595 | "bignum truncated to %d bytes", | |
4596 | nbytes), | |
4597 | nbytes); | |
252b5132 RH |
4598 | size = nbytes; |
4599 | } | |
4600 | ||
93d90f46 AM |
4601 | if (nbytes == 1) |
4602 | { | |
4603 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4604 | return; | |
4605 | } | |
4606 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4607 | ||
252b5132 RH |
4608 | if (target_big_endian) |
4609 | { | |
4610 | while (nbytes > size) | |
4611 | { | |
4612 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4613 | nbytes -= CHARS_PER_LITTLENUM; | |
4614 | p += CHARS_PER_LITTLENUM; | |
4615 | } | |
4616 | ||
4617 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4618 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4619 | { |
4620 | --nums; | |
4621 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4622 | size -= CHARS_PER_LITTLENUM; | |
4623 | p += CHARS_PER_LITTLENUM; | |
4624 | } | |
4625 | } | |
4626 | else | |
4627 | { | |
4628 | nums = generic_bignum; | |
ceac3f62 | 4629 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4630 | { |
4631 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4632 | ++nums; | |
4633 | size -= CHARS_PER_LITTLENUM; | |
4634 | p += CHARS_PER_LITTLENUM; | |
4635 | nbytes -= CHARS_PER_LITTLENUM; | |
4636 | } | |
4637 | ||
ceac3f62 | 4638 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4639 | { |
4640 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4641 | nbytes -= CHARS_PER_LITTLENUM; | |
4642 | p += CHARS_PER_LITTLENUM; | |
4643 | } | |
4644 | } | |
4645 | } | |
4646 | else | |
62ebcb5c | 4647 | emit_expr_fix (exp, nbytes, frag_now, p, TC_PARSE_CONS_RETURN_NONE); |
7ddd14de BW |
4648 | } |
4649 | ||
4650 | void | |
62ebcb5c | 4651 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p, |
00c06fdc | 4652 | TC_PARSE_CONS_RETURN_TYPE r ATTRIBUTE_UNUSED) |
7ddd14de | 4653 | { |
62ebcb5c AM |
4654 | int offset = 0; |
4655 | unsigned int size = nbytes; | |
4656 | ||
4657 | memset (p, 0, size); | |
252b5132 | 4658 | |
7ddd14de | 4659 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4660 | |
252b5132 | 4661 | #ifdef TC_CONS_FIX_NEW |
62ebcb5c | 4662 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal + offset, size, exp, r); |
252b5132 | 4663 | #else |
62ebcb5c AM |
4664 | if (r != TC_PARSE_CONS_RETURN_NONE) |
4665 | { | |
4666 | reloc_howto_type *reloc_howto; | |
252b5132 | 4667 | |
62ebcb5c AM |
4668 | reloc_howto = bfd_reloc_type_lookup (stdoutput, r); |
4669 | size = bfd_get_reloc_size (reloc_howto); | |
4670 | ||
4671 | if (size > nbytes) | |
4672 | { | |
992a06ee AM |
4673 | as_bad (ngettext ("%s relocations do not fit in %u byte", |
4674 | "%s relocations do not fit in %u bytes", | |
4675 | nbytes), | |
62ebcb5c AM |
4676 | reloc_howto->name, nbytes); |
4677 | return; | |
4678 | } | |
4679 | else if (target_big_endian) | |
4680 | offset = nbytes - size; | |
4681 | } | |
4682 | else | |
4683 | switch (size) | |
7ddd14de BW |
4684 | { |
4685 | case 1: | |
4686 | r = BFD_RELOC_8; | |
4687 | break; | |
4688 | case 2: | |
4689 | r = BFD_RELOC_16; | |
4690 | break; | |
d4f4f3fb AM |
4691 | case 3: |
4692 | r = BFD_RELOC_24; | |
4693 | break; | |
7ddd14de BW |
4694 | case 4: |
4695 | r = BFD_RELOC_32; | |
4696 | break; | |
4697 | case 8: | |
4698 | r = BFD_RELOC_64; | |
4699 | break; | |
4700 | default: | |
62ebcb5c AM |
4701 | as_bad (_("unsupported BFD relocation size %u"), size); |
4702 | return; | |
252b5132 | 4703 | } |
62ebcb5c AM |
4704 | fix_new_exp (frag, p - frag->fr_literal + offset, size, |
4705 | exp, 0, r); | |
252b5132 | 4706 | #endif |
252b5132 RH |
4707 | } |
4708 | \f | |
252b5132 RH |
4709 | /* Handle an MRI style string expression. */ |
4710 | ||
abd63a32 | 4711 | #ifdef TC_M68K |
252b5132 | 4712 | static void |
62ebcb5c | 4713 | parse_mri_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4714 | { |
4715 | if (*input_line_pointer != '\'' | |
4716 | && (input_line_pointer[1] != '\'' | |
4717 | || (*input_line_pointer != 'A' | |
4718 | && *input_line_pointer != 'E'))) | |
1e539319 | 4719 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
252b5132 RH |
4720 | else |
4721 | { | |
4722 | unsigned int scan; | |
4723 | unsigned int result = 0; | |
4724 | ||
4725 | /* An MRI style string. Cut into as many bytes as will fit into | |
4726 | a nbyte chunk, left justify if necessary, and separate with | |
4727 | commas so we can try again later. */ | |
4728 | if (*input_line_pointer == 'A') | |
4729 | ++input_line_pointer; | |
4730 | else if (*input_line_pointer == 'E') | |
4731 | { | |
4732 | as_bad (_("EBCDIC constants are not supported")); | |
4733 | ++input_line_pointer; | |
4734 | } | |
4735 | ||
4736 | input_line_pointer++; | |
4737 | for (scan = 0; scan < nbytes; scan++) | |
4738 | { | |
4739 | if (*input_line_pointer == '\'') | |
4740 | { | |
4741 | if (input_line_pointer[1] == '\'') | |
4742 | { | |
4743 | input_line_pointer++; | |
4744 | } | |
4745 | else | |
4746 | break; | |
4747 | } | |
4748 | result = (result << 8) | (*input_line_pointer++); | |
4749 | } | |
4750 | ||
041ff4dd | 4751 | /* Left justify. */ |
252b5132 RH |
4752 | while (scan < nbytes) |
4753 | { | |
4754 | result <<= 8; | |
4755 | scan++; | |
4756 | } | |
f0e652b4 | 4757 | |
041ff4dd | 4758 | /* Create correct expression. */ |
252b5132 RH |
4759 | exp->X_op = O_constant; |
4760 | exp->X_add_number = result; | |
f0e652b4 | 4761 | |
041ff4dd | 4762 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4763 | if (input_line_pointer[0] != '\'' || |
4764 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4765 | { | |
4766 | input_line_pointer -= 2; | |
4767 | input_line_pointer[0] = ','; | |
4768 | input_line_pointer[1] = '\''; | |
4769 | } | |
4770 | else | |
4771 | input_line_pointer++; | |
4772 | } | |
4773 | } | |
abd63a32 | 4774 | #endif /* TC_M68K */ |
252b5132 RH |
4775 | \f |
4776 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4777 | ||
4778 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4779 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4780 | object file COUNT times. | |
4781 | ||
4782 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4783 | ||
4784 | static void | |
e046cf80 | 4785 | parse_repeat_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4786 | { |
4787 | expressionS count; | |
3d540e93 | 4788 | int i; |
252b5132 RH |
4789 | |
4790 | expression (exp); | |
4791 | ||
4792 | if (*input_line_pointer != ':') | |
4793 | { | |
4794 | /* No repeat count. */ | |
4795 | return; | |
4796 | } | |
4797 | ||
4798 | ++input_line_pointer; | |
4799 | expression (&count); | |
4800 | if (count.X_op != O_constant | |
4801 | || count.X_add_number <= 0) | |
4802 | { | |
0e389e77 | 4803 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4804 | return; |
4805 | } | |
4806 | ||
4807 | /* The cons function is going to output this expression once. So we | |
4808 | output it count - 1 times. */ | |
4809 | for (i = count.X_add_number - 1; i > 0; i--) | |
4810 | emit_expr (exp, nbytes); | |
4811 | } | |
4812 | ||
4813 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4814 | \f | |
4815 | /* Parse a floating point number represented as a hex constant. This | |
4816 | permits users to specify the exact bits they want in the floating | |
4817 | point number. */ | |
4818 | ||
4819 | static int | |
39e6acbd | 4820 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4821 | { |
4822 | int length; | |
4823 | int i; | |
4824 | ||
4825 | switch (float_type) | |
4826 | { | |
4827 | case 'f': | |
4828 | case 'F': | |
4829 | case 's': | |
4830 | case 'S': | |
4831 | length = 4; | |
4832 | break; | |
4833 | ||
4834 | case 'd': | |
4835 | case 'D': | |
4836 | case 'r': | |
4837 | case 'R': | |
4838 | length = 8; | |
4839 | break; | |
4840 | ||
4841 | case 'x': | |
4842 | case 'X': | |
4843 | length = 12; | |
4844 | break; | |
4845 | ||
4846 | case 'p': | |
4847 | case 'P': | |
4848 | length = 12; | |
4849 | break; | |
4850 | ||
4851 | default: | |
0e389e77 | 4852 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4853 | return -1; |
4854 | } | |
4855 | ||
4856 | /* It would be nice if we could go through expression to parse the | |
4857 | hex constant, but if we get a bignum it's a pain to sort it into | |
4858 | the buffer correctly. */ | |
4859 | i = 0; | |
4860 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4861 | { | |
4862 | int d; | |
4863 | ||
4864 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4865 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4866 | if (*input_line_pointer == '_') |
4867 | { | |
4868 | ++input_line_pointer; | |
4869 | continue; | |
4870 | } | |
4871 | ||
4872 | if (i >= length) | |
4873 | { | |
0e389e77 | 4874 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4875 | return -1; |
4876 | } | |
4877 | d = hex_value (*input_line_pointer) << 4; | |
4878 | ++input_line_pointer; | |
4879 | while (*input_line_pointer == '_') | |
4880 | ++input_line_pointer; | |
4881 | if (hex_p (*input_line_pointer)) | |
4882 | { | |
4883 | d += hex_value (*input_line_pointer); | |
4884 | ++input_line_pointer; | |
4885 | } | |
4886 | if (target_big_endian) | |
4887 | bytes[i] = d; | |
4888 | else | |
4889 | bytes[length - i - 1] = d; | |
4890 | ++i; | |
4891 | } | |
4892 | ||
4893 | if (i < length) | |
4894 | { | |
4895 | if (target_big_endian) | |
4896 | memset (bytes + i, 0, length - i); | |
4897 | else | |
4898 | memset (bytes, 0, length - i); | |
4899 | } | |
4900 | ||
4901 | return length; | |
4902 | } | |
4903 | ||
d6415f6c | 4904 | /* float_cons() |
f0e652b4 | 4905 | |
041ff4dd NC |
4906 | CONStruct some more frag chars of .floats .ffloats etc. |
4907 | Makes 0 or more new frags. | |
4908 | If need_pass_2 == 1, no frags are emitted. | |
4909 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4910 | |
041ff4dd NC |
4911 | A floating constant is defined by atof_generic(), except it is preceded |
4912 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4913 | reading, I decided to be incompatible. This always tries to give you | |
4914 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4915 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4916 | a choice of 2 flavours of noise according to which of 2 floating-point |
4917 | scanners you directed AS to use. | |
f0e652b4 | 4918 | |
041ff4dd | 4919 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4920 | |
4921 | void | |
39e6acbd | 4922 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4923 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4924 | { |
3d540e93 | 4925 | char *p; |
041ff4dd | 4926 | int length; /* Number of chars in an object. */ |
252b5132 RH |
4927 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4928 | ||
4929 | if (is_it_end_of_statement ()) | |
4930 | { | |
4931 | demand_empty_rest_of_line (); | |
4932 | return; | |
4933 | } | |
4934 | ||
ec9ab52c JB |
4935 | if (now_seg == absolute_section) |
4936 | { | |
4937 | as_bad (_("attempt to store float in absolute section")); | |
4938 | ignore_rest_of_line (); | |
4939 | return; | |
4940 | } | |
4941 | ||
4942 | if (in_bss ()) | |
4943 | { | |
4944 | as_bad (_("attempt to store float in section `%s'"), | |
4945 | segment_name (now_seg)); | |
4946 | ignore_rest_of_line (); | |
4947 | return; | |
4948 | } | |
4949 | ||
252b5132 RH |
4950 | #ifdef md_flush_pending_output |
4951 | md_flush_pending_output (); | |
4952 | #endif | |
4953 | ||
cc3f603a JM |
4954 | #ifdef md_cons_align |
4955 | md_cons_align (1); | |
4956 | #endif | |
4957 | ||
252b5132 RH |
4958 | do |
4959 | { | |
bb32eac5 JB |
4960 | length = parse_one_float (float_type, temp); |
4961 | if (length < 0) | |
4962 | return; | |
252b5132 RH |
4963 | |
4964 | if (!need_pass_2) | |
4965 | { | |
4966 | int count; | |
4967 | ||
4968 | count = 1; | |
4969 | ||
4970 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4971 | if (*input_line_pointer == ':') | |
4972 | { | |
4973 | expressionS count_exp; | |
4974 | ||
4975 | ++input_line_pointer; | |
4976 | expression (&count_exp); | |
f0e652b4 | 4977 | |
252b5132 RH |
4978 | if (count_exp.X_op != O_constant |
4979 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4980 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4981 | else |
4982 | count = count_exp.X_add_number; | |
4983 | } | |
4984 | #endif | |
4985 | ||
4986 | while (--count >= 0) | |
4987 | { | |
4988 | p = frag_more (length); | |
4989 | memcpy (p, temp, (unsigned int) length); | |
4990 | } | |
4991 | } | |
4992 | SKIP_WHITESPACE (); | |
4993 | } | |
4994 | while (*input_line_pointer++ == ','); | |
4995 | ||
041ff4dd NC |
4996 | /* Put terminator back into stream. */ |
4997 | --input_line_pointer; | |
252b5132 | 4998 | demand_empty_rest_of_line (); |
041ff4dd | 4999 | } |
252b5132 | 5000 | \f |
9136aa49 | 5001 | /* LEB128 Encoding. |
252b5132 | 5002 | |
9136aa49 DG |
5003 | Note - we are using the DWARF standard's definition of LEB128 encoding |
5004 | where each 7-bit value is a stored in a byte, *not* an octet. This | |
5005 | means that on targets where a byte contains multiple octets there is | |
5006 | a *huge waste of space*. (This also means that we do not have to | |
5007 | have special versions of these functions for when OCTETS_PER_BYTE_POWER | |
5008 | is non-zero). | |
5009 | ||
5010 | If the 7-bit values were to be packed into N-bit bytes (where N > 8) | |
5011 | we would then have to consider whether multiple, successive LEB128 | |
5012 | values should be packed into the bytes without padding (bad idea) or | |
5013 | whether each LEB128 number is padded out to a whole number of bytes. | |
5014 | Plus you have to decide on the endianness of packing octets into a | |
5015 | byte. */ | |
5016 | ||
5017 | /* Return the size of a LEB128 value in bytes. */ | |
5018 | ||
5019 | static inline unsigned int | |
39e6acbd | 5020 | sizeof_sleb128 (offsetT value) |
252b5132 | 5021 | { |
3d540e93 NC |
5022 | int size = 0; |
5023 | unsigned byte; | |
252b5132 RH |
5024 | |
5025 | do | |
5026 | { | |
5027 | byte = (value & 0x7f); | |
5028 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5029 | Fortunately, we can structure things so that the extra work reduces | |
5030 | to a noop on systems that do things "properly". */ | |
5031 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5032 | size += 1; | |
5033 | } | |
5034 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
5035 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5036 | ||
5037 | return size; | |
5038 | } | |
5039 | ||
9136aa49 | 5040 | static inline unsigned int |
39e6acbd | 5041 | sizeof_uleb128 (valueT value) |
252b5132 | 5042 | { |
3d540e93 | 5043 | int size = 0; |
252b5132 RH |
5044 | |
5045 | do | |
5046 | { | |
252b5132 RH |
5047 | value >>= 7; |
5048 | size += 1; | |
5049 | } | |
5050 | while (value != 0); | |
5051 | ||
5052 | return size; | |
5053 | } | |
5054 | ||
9136aa49 | 5055 | unsigned int |
39e6acbd | 5056 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
5057 | { |
5058 | if (sign) | |
5059 | return sizeof_sleb128 ((offsetT) value); | |
5060 | else | |
5061 | return sizeof_uleb128 (value); | |
5062 | } | |
5063 | ||
9136aa49 | 5064 | /* Output a LEB128 value. Returns the number of bytes used. */ |
252b5132 | 5065 | |
9136aa49 | 5066 | static inline unsigned int |
39e6acbd | 5067 | output_sleb128 (char *p, offsetT value) |
252b5132 | 5068 | { |
3d540e93 NC |
5069 | char *orig = p; |
5070 | int more; | |
252b5132 RH |
5071 | |
5072 | do | |
5073 | { | |
5074 | unsigned byte = (value & 0x7f); | |
5075 | ||
5076 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5077 | Fortunately, we can structure things so that the extra work reduces | |
5078 | to a noop on systems that do things "properly". */ | |
5079 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5080 | ||
5081 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
5082 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5083 | if (more) | |
5084 | byte |= 0x80; | |
5085 | ||
5086 | *p++ = byte; | |
5087 | } | |
5088 | while (more); | |
5089 | ||
5090 | return p - orig; | |
5091 | } | |
5092 | ||
9136aa49 | 5093 | static inline unsigned int |
39e6acbd | 5094 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
5095 | { |
5096 | char *orig = p; | |
5097 | ||
5098 | do | |
5099 | { | |
5100 | unsigned byte = (value & 0x7f); | |
9136aa49 | 5101 | |
252b5132 RH |
5102 | value >>= 7; |
5103 | if (value != 0) | |
5104 | /* More bytes to follow. */ | |
5105 | byte |= 0x80; | |
5106 | ||
5107 | *p++ = byte; | |
5108 | } | |
5109 | while (value != 0); | |
5110 | ||
5111 | return p - orig; | |
5112 | } | |
5113 | ||
9136aa49 | 5114 | unsigned int |
39e6acbd | 5115 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
5116 | { |
5117 | if (sign) | |
5118 | return output_sleb128 (p, (offsetT) value); | |
5119 | else | |
5120 | return output_uleb128 (p, value); | |
5121 | } | |
5122 | ||
5123 | /* Do the same for bignums. We combine sizeof with output here in that | |
5124 | we don't output for NULL values of P. It isn't really as critical as | |
9136aa49 DG |
5125 | for "normal" values that this be streamlined. Returns the number of |
5126 | bytes used. */ | |
252b5132 | 5127 | |
9136aa49 DG |
5128 | static inline unsigned int |
5129 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5130 | { |
5131 | char *orig = p; | |
5132 | valueT val = 0; | |
5133 | int loaded = 0; | |
5134 | unsigned byte; | |
5135 | ||
5136 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
5137 | while (size > 1 |
5138 | && bignum[size - 1] == LITTLENUM_MASK | |
5139 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
5140 | size--; |
5141 | ||
5142 | do | |
5143 | { | |
e5604d79 RS |
5144 | /* OR in the next part of the littlenum. */ |
5145 | val |= (*bignum << loaded); | |
5146 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
5147 | size--; | |
5148 | bignum++; | |
5149 | ||
5150 | /* Add bytes until there are less than 7 bits left in VAL | |
5151 | or until every non-sign bit has been written. */ | |
5152 | do | |
252b5132 | 5153 | { |
e5604d79 RS |
5154 | byte = val & 0x7f; |
5155 | loaded -= 7; | |
5156 | val >>= 7; | |
5157 | if (size > 0 | |
5158 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 5159 | byte |= 0x80; |
e5604d79 RS |
5160 | |
5161 | if (orig) | |
5162 | *p = byte; | |
5163 | p++; | |
252b5132 | 5164 | } |
e5604d79 RS |
5165 | while ((byte & 0x80) != 0 && loaded >= 7); |
5166 | } | |
5167 | while (size > 0); | |
252b5132 | 5168 | |
e5604d79 RS |
5169 | /* Mop up any left-over bits (of which there will be less than 7). */ |
5170 | if ((byte & 0x80) != 0) | |
5171 | { | |
5172 | /* Sign-extend VAL. */ | |
5173 | if (val & (1 << (loaded - 1))) | |
29798047 | 5174 | val |= ~0U << loaded; |
252b5132 | 5175 | if (orig) |
e5604d79 | 5176 | *p = val & 0x7f; |
252b5132 RH |
5177 | p++; |
5178 | } | |
252b5132 RH |
5179 | |
5180 | return p - orig; | |
5181 | } | |
5182 | ||
9136aa49 DG |
5183 | static inline unsigned int |
5184 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5185 | { |
5186 | char *orig = p; | |
5187 | valueT val = 0; | |
5188 | int loaded = 0; | |
5189 | unsigned byte; | |
5190 | ||
5191 | /* Strip leading zeros off the bignum. */ | |
5192 | /* XXX: Is this needed? */ | |
041ff4dd | 5193 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
5194 | size--; |
5195 | ||
5196 | do | |
5197 | { | |
5198 | if (loaded < 7 && size > 0) | |
5199 | { | |
5200 | val |= (*bignum << loaded); | |
5201 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5202 | size--; | |
5203 | bignum++; | |
5204 | } | |
5205 | ||
5206 | byte = val & 0x7f; | |
5207 | loaded -= 7; | |
5208 | val >>= 7; | |
5209 | ||
5210 | if (size > 0 || val) | |
5211 | byte |= 0x80; | |
5212 | ||
5213 | if (orig) | |
5214 | *p = byte; | |
5215 | p++; | |
5216 | } | |
5217 | while (byte & 0x80); | |
5218 | ||
5219 | return p - orig; | |
5220 | } | |
5221 | ||
9136aa49 DG |
5222 | static unsigned int |
5223 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size, int sign) | |
252b5132 RH |
5224 | { |
5225 | if (sign) | |
5226 | return output_big_sleb128 (p, bignum, size); | |
5227 | else | |
5228 | return output_big_uleb128 (p, bignum, size); | |
5229 | } | |
5230 | ||
5231 | /* Generate the appropriate fragments for a given expression to emit a | |
9a724e7b | 5232 | leb128 value. SIGN is 1 for sleb, 0 for uleb. */ |
252b5132 | 5233 | |
6b9a135d | 5234 | void |
39e6acbd | 5235 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5236 | { |
5237 | operatorT op = exp->X_op; | |
b7712f8d | 5238 | unsigned int nbytes; |
252b5132 RH |
5239 | |
5240 | if (op == O_absent || op == O_illegal) | |
5241 | { | |
5242 | as_warn (_("zero assumed for missing expression")); | |
5243 | exp->X_add_number = 0; | |
5244 | op = O_constant; | |
5245 | } | |
5246 | else if (op == O_big && exp->X_add_number <= 0) | |
5247 | { | |
0e389e77 | 5248 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5249 | exp->X_add_number = 0; |
5250 | op = O_constant; | |
5251 | } | |
5252 | else if (op == O_register) | |
5253 | { | |
5254 | as_warn (_("register value used as expression")); | |
5255 | op = O_constant; | |
5256 | } | |
e5604d79 RS |
5257 | else if (op == O_constant |
5258 | && sign | |
956a6ba3 | 5259 | && (exp->X_add_number < 0) == !exp->X_extrabit) |
e5604d79 RS |
5260 | { |
5261 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5262 | doesn't reflect the sign of the original value. Convert EXP | |
5263 | to a correctly-extended bignum instead. */ | |
956a6ba3 | 5264 | convert_to_bignum (exp, exp->X_extrabit); |
e5604d79 RS |
5265 | op = O_big; |
5266 | } | |
252b5132 | 5267 | |
ec9ab52c JB |
5268 | if (now_seg == absolute_section) |
5269 | { | |
5270 | if (op != O_constant || exp->X_add_number != 0) | |
5271 | as_bad (_("attempt to store value in absolute section")); | |
5272 | abs_section_offset++; | |
5273 | return; | |
5274 | } | |
5275 | ||
5276 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
5277 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
5278 | segment_name (now_seg)); | |
5279 | ||
67a659f6 RH |
5280 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5281 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5282 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5283 | if (check_eh_frame (exp, &nbytes)) |
5284 | abort (); | |
5285 | ||
371b7465 RH |
5286 | /* Let the backend know that subsequent data may be byte aligned. */ |
5287 | #ifdef md_cons_align | |
5288 | md_cons_align (1); | |
5289 | #endif | |
5290 | ||
252b5132 RH |
5291 | if (op == O_constant) |
5292 | { | |
5293 | /* If we've got a constant, emit the thing directly right now. */ | |
5294 | ||
5295 | valueT value = exp->X_add_number; | |
9136aa49 | 5296 | unsigned int size; |
252b5132 RH |
5297 | char *p; |
5298 | ||
5299 | size = sizeof_leb128 (value, sign); | |
5300 | p = frag_more (size); | |
9136aa49 DG |
5301 | if (output_leb128 (p, value, sign) > size) |
5302 | abort (); | |
252b5132 RH |
5303 | } |
5304 | else if (op == O_big) | |
5305 | { | |
5306 | /* O_big is a different sort of constant. */ | |
74def31d | 5307 | int nbr_digits = exp->X_add_number; |
9136aa49 | 5308 | unsigned int size; |
252b5132 RH |
5309 | char *p; |
5310 | ||
74def31d TG |
5311 | /* If the leading littenum is 0xffff, prepend a 0 to avoid confusion with |
5312 | a signed number. Unary operators like - or ~ always extend the | |
5313 | bignum to its largest size. */ | |
5314 | if (exp->X_unsigned | |
5315 | && nbr_digits < SIZE_OF_LARGE_NUMBER | |
5316 | && generic_bignum[nbr_digits - 1] == LITTLENUM_MASK) | |
5317 | generic_bignum[nbr_digits++] = 0; | |
5318 | ||
5319 | size = output_big_leb128 (NULL, generic_bignum, nbr_digits, sign); | |
252b5132 | 5320 | p = frag_more (size); |
74def31d | 5321 | if (output_big_leb128 (p, generic_bignum, nbr_digits, sign) > size) |
9136aa49 | 5322 | abort (); |
252b5132 RH |
5323 | } |
5324 | else | |
5325 | { | |
041ff4dd | 5326 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5327 | resolve things later. */ |
5328 | ||
041ff4dd | 5329 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5330 | make_expr_symbol (exp), 0, (char *) NULL); |
5331 | } | |
5332 | } | |
5333 | ||
5334 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5335 | ||
5336 | void | |
39e6acbd | 5337 | s_leb128 (int sign) |
252b5132 RH |
5338 | { |
5339 | expressionS exp; | |
5340 | ||
00bbdfe7 BW |
5341 | #ifdef md_flush_pending_output |
5342 | md_flush_pending_output (); | |
5343 | #endif | |
5344 | ||
041ff4dd NC |
5345 | do |
5346 | { | |
38cf168b | 5347 | expression (&exp); |
041ff4dd NC |
5348 | emit_leb128_expr (&exp, sign); |
5349 | } | |
5350 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5351 | |
5352 | input_line_pointer--; | |
5353 | demand_empty_rest_of_line (); | |
5354 | } | |
5355 | \f | |
38a57ae7 NC |
5356 | static void |
5357 | stringer_append_char (int c, int bitsize) | |
5358 | { | |
ec9ab52c JB |
5359 | if (c && in_bss ()) |
5360 | as_bad (_("attempt to store non-empty string in section `%s'"), | |
5361 | segment_name (now_seg)); | |
5362 | ||
38a57ae7 NC |
5363 | if (!target_big_endian) |
5364 | FRAG_APPEND_1_CHAR (c); | |
5365 | ||
5366 | switch (bitsize) | |
5367 | { | |
5368 | case 64: | |
5369 | FRAG_APPEND_1_CHAR (0); | |
5370 | FRAG_APPEND_1_CHAR (0); | |
5371 | FRAG_APPEND_1_CHAR (0); | |
5372 | FRAG_APPEND_1_CHAR (0); | |
5373 | /* Fall through. */ | |
5374 | case 32: | |
5375 | FRAG_APPEND_1_CHAR (0); | |
5376 | FRAG_APPEND_1_CHAR (0); | |
5377 | /* Fall through. */ | |
5378 | case 16: | |
5379 | FRAG_APPEND_1_CHAR (0); | |
5380 | /* Fall through. */ | |
5381 | case 8: | |
5382 | break; | |
5383 | default: | |
5384 | /* Called with invalid bitsize argument. */ | |
5385 | abort (); | |
5386 | break; | |
5387 | } | |
5388 | if (target_big_endian) | |
5389 | FRAG_APPEND_1_CHAR (c); | |
5390 | } | |
5391 | ||
5392 | /* Worker to do .ascii etc statements. | |
5393 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5394 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5395 | check it. |
5396 | Checks for end-of-line. | |
5397 | BITS_APPENDZERO says how many bits are in a target char. | |
5398 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5399 | |
5400 | void | |
38a57ae7 | 5401 | stringer (int bits_appendzero) |
252b5132 | 5402 | { |
38a57ae7 NC |
5403 | const int bitsize = bits_appendzero & ~7; |
5404 | const int append_zero = bits_appendzero & 1; | |
5405 | unsigned int c; | |
87975d2a | 5406 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5407 | char *start; |
87975d2a | 5408 | #endif |
252b5132 RH |
5409 | |
5410 | #ifdef md_flush_pending_output | |
5411 | md_flush_pending_output (); | |
5412 | #endif | |
5413 | ||
cc3f603a JM |
5414 | #ifdef md_cons_align |
5415 | md_cons_align (1); | |
5416 | #endif | |
5417 | ||
35c1a439 JB |
5418 | /* If we have been switched into the abs_section then we |
5419 | will not have an obstack onto which we can hang strings. */ | |
5420 | if (now_seg == absolute_section) | |
5421 | { | |
5422 | as_bad (_("strings must be placed into a section")); | |
5423 | ignore_rest_of_line (); | |
5424 | return; | |
5425 | } | |
5426 | ||
041ff4dd NC |
5427 | /* The following awkward logic is to parse ZERO or more strings, |
5428 | comma separated. Recall a string expression includes spaces | |
5429 | before the opening '\"' and spaces after the closing '\"'. | |
5430 | We fake a leading ',' if there is (supposed to be) | |
5431 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5432 | if (is_it_end_of_statement ()) |
5433 | { | |
041ff4dd NC |
5434 | c = 0; /* Skip loop. */ |
5435 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5436 | } |
5437 | else | |
5438 | { | |
041ff4dd | 5439 | c = ','; /* Do loop. */ |
252b5132 | 5440 | } |
d6415f6c | 5441 | |
252b5132 RH |
5442 | while (c == ',' || c == '<' || c == '"') |
5443 | { | |
5444 | SKIP_WHITESPACE (); | |
5445 | switch (*input_line_pointer) | |
5446 | { | |
5447 | case '\"': | |
041ff4dd | 5448 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5449 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5450 | start = input_line_pointer; |
87975d2a | 5451 | #endif |
38a57ae7 | 5452 | |
252b5132 | 5453 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5454 | stringer_append_char (c, bitsize); |
5455 | ||
3d955acb NC |
5456 | /* Treat "a" "b" as "ab". Even if we are appending zeros. */ |
5457 | SKIP_ALL_WHITESPACE (); | |
5458 | if (*input_line_pointer == '"') | |
5459 | break; | |
5460 | ||
252b5132 | 5461 | if (append_zero) |
38a57ae7 NC |
5462 | stringer_append_char (0, bitsize); |
5463 | ||
87975d2a | 5464 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5465 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5466 | will emit .string with a filename in the .debug section |
5467 | after a sequence of constants. See the comment in | |
5468 | emit_expr for the sequence. emit_expr will set | |
5469 | dwarf_file_string to non-zero if this string might be a | |
5470 | source file name. */ | |
252b5132 RH |
5471 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5472 | dwarf_file_string = 0; | |
5473 | else if (dwarf_file_string) | |
5474 | { | |
5475 | c = input_line_pointer[-1]; | |
5476 | input_line_pointer[-1] = '\0'; | |
5477 | listing_source_file (start); | |
5478 | input_line_pointer[-1] = c; | |
5479 | } | |
252b5132 RH |
5480 | #endif |
5481 | ||
5482 | break; | |
5483 | case '<': | |
5484 | input_line_pointer++; | |
5485 | c = get_single_number (); | |
38a57ae7 | 5486 | stringer_append_char (c, bitsize); |
252b5132 | 5487 | if (*input_line_pointer != '>') |
bdfb4455 WH |
5488 | { |
5489 | as_bad (_("expected <nn>")); | |
5490 | ignore_rest_of_line (); | |
5491 | return; | |
5492 | } | |
252b5132 RH |
5493 | input_line_pointer++; |
5494 | break; | |
5495 | case ',': | |
5496 | input_line_pointer++; | |
5497 | break; | |
5498 | } | |
5499 | SKIP_WHITESPACE (); | |
5500 | c = *input_line_pointer; | |
5501 | } | |
5502 | ||
5503 | demand_empty_rest_of_line (); | |
38a57ae7 | 5504 | } |
252b5132 RH |
5505 | \f |
5506 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5507 | high bits set. We'll probably also have trouble with | |
5508 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5509 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5510 | |
041ff4dd | 5511 | unsigned int |
39e6acbd | 5512 | next_char_of_string (void) |
252b5132 | 5513 | { |
3d540e93 | 5514 | unsigned int c; |
252b5132 RH |
5515 | |
5516 | c = *input_line_pointer++ & CHAR_MASK; | |
5517 | switch (c) | |
5518 | { | |
f49547a6 NC |
5519 | case 0: |
5520 | /* PR 20902: Do not advance past the end of the buffer. */ | |
5521 | -- input_line_pointer; | |
5522 | c = NOT_A_CHAR; | |
5523 | break; | |
5524 | ||
252b5132 RH |
5525 | case '\"': |
5526 | c = NOT_A_CHAR; | |
5527 | break; | |
5528 | ||
5529 | case '\n': | |
0e389e77 | 5530 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5531 | bump_line_counters (); |
5532 | break; | |
5533 | ||
252b5132 | 5534 | case '\\': |
16d87673 SB |
5535 | if (!TC_STRING_ESCAPES) |
5536 | break; | |
d9800776 | 5537 | switch (c = *input_line_pointer++ & CHAR_MASK) |
252b5132 RH |
5538 | { |
5539 | case 'b': | |
5540 | c = '\b'; | |
5541 | break; | |
5542 | ||
5543 | case 'f': | |
5544 | c = '\f'; | |
5545 | break; | |
5546 | ||
5547 | case 'n': | |
5548 | c = '\n'; | |
5549 | break; | |
5550 | ||
5551 | case 'r': | |
5552 | c = '\r'; | |
5553 | break; | |
5554 | ||
5555 | case 't': | |
5556 | c = '\t'; | |
5557 | break; | |
5558 | ||
5559 | case 'v': | |
5560 | c = '\013'; | |
5561 | break; | |
5562 | ||
5563 | case '\\': | |
5564 | case '"': | |
041ff4dd | 5565 | break; /* As itself. */ |
252b5132 RH |
5566 | |
5567 | case '0': | |
5568 | case '1': | |
5569 | case '2': | |
5570 | case '3': | |
5571 | case '4': | |
5572 | case '5': | |
5573 | case '6': | |
5574 | case '7': | |
5575 | case '8': | |
5576 | case '9': | |
5577 | { | |
5578 | long number; | |
5579 | int i; | |
5580 | ||
041ff4dd | 5581 | for (i = 0, number = 0; |
3882b010 | 5582 | ISDIGIT (c) && i < 3; |
041ff4dd | 5583 | c = *input_line_pointer++, i++) |
252b5132 RH |
5584 | { |
5585 | number = number * 8 + c - '0'; | |
5586 | } | |
f0e652b4 | 5587 | |
d9800776 | 5588 | c = number & CHAR_MASK; |
252b5132 RH |
5589 | } |
5590 | --input_line_pointer; | |
5591 | break; | |
5592 | ||
5593 | case 'x': | |
5594 | case 'X': | |
5595 | { | |
5596 | long number; | |
5597 | ||
5598 | number = 0; | |
5599 | c = *input_line_pointer++; | |
3882b010 | 5600 | while (ISXDIGIT (c)) |
252b5132 | 5601 | { |
3882b010 | 5602 | if (ISDIGIT (c)) |
252b5132 | 5603 | number = number * 16 + c - '0'; |
3882b010 | 5604 | else if (ISUPPER (c)) |
252b5132 RH |
5605 | number = number * 16 + c - 'A' + 10; |
5606 | else | |
5607 | number = number * 16 + c - 'a' + 10; | |
5608 | c = *input_line_pointer++; | |
5609 | } | |
d9800776 | 5610 | c = number & CHAR_MASK; |
252b5132 RH |
5611 | --input_line_pointer; |
5612 | } | |
5613 | break; | |
5614 | ||
5615 | case '\n': | |
041ff4dd | 5616 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5617 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5618 | c = '\n'; |
5619 | bump_line_counters (); | |
5620 | break; | |
5621 | ||
f49547a6 NC |
5622 | case 0: |
5623 | /* Do not advance past the end of the buffer. */ | |
5624 | -- input_line_pointer; | |
5625 | c = NOT_A_CHAR; | |
5626 | break; | |
5627 | ||
252b5132 RH |
5628 | default: |
5629 | ||
5630 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5631 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5632 | c = '?'; |
5633 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5634 | ||
5635 | break; | |
041ff4dd | 5636 | } |
252b5132 | 5637 | break; |
252b5132 RH |
5638 | |
5639 | default: | |
5640 | break; | |
041ff4dd | 5641 | } |
252b5132 | 5642 | return (c); |
041ff4dd | 5643 | } |
252b5132 RH |
5644 | \f |
5645 | static segT | |
3d540e93 | 5646 | get_segmented_expression (expressionS *expP) |
252b5132 | 5647 | { |
3d540e93 | 5648 | segT retval; |
252b5132 RH |
5649 | |
5650 | retval = expression (expP); | |
5651 | if (expP->X_op == O_illegal | |
5652 | || expP->X_op == O_absent | |
5653 | || expP->X_op == O_big) | |
5654 | { | |
0e389e77 | 5655 | as_bad (_("expected address expression")); |
252b5132 RH |
5656 | expP->X_op = O_constant; |
5657 | expP->X_add_number = 0; | |
5658 | retval = absolute_section; | |
5659 | } | |
5660 | return retval; | |
5661 | } | |
5662 | ||
041ff4dd | 5663 | static segT |
3d540e93 | 5664 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5665 | { |
259af69e | 5666 | segT retval = get_segmented_expression (expP); |
252b5132 | 5667 | |
259af69e | 5668 | if (retval == undefined_section) |
252b5132 RH |
5669 | { |
5670 | /* There is no easy way to extract the undefined symbol from the | |
5671 | expression. */ | |
5672 | if (expP->X_add_symbol != NULL | |
5673 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5674 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5675 | S_GET_NAME (expP->X_add_symbol)); | |
5676 | else | |
5677 | as_warn (_("some symbol undefined; zero assumed")); | |
5678 | retval = absolute_section; | |
5679 | expP->X_op = O_constant; | |
5680 | expP->X_add_number = 0; | |
5681 | } | |
259af69e | 5682 | return retval; |
041ff4dd | 5683 | } |
252b5132 | 5684 | |
041ff4dd | 5685 | char /* Return terminator. */ |
39e6acbd | 5686 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5687 | { |
5688 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5689 | *val_pointer = (long) get_absolute_expression (); | |
5690 | return (*input_line_pointer++); | |
5691 | } | |
5692 | \f | |
041ff4dd NC |
5693 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5694 | Give a warning if that happens. */ | |
5695 | ||
252b5132 | 5696 | char * |
39e6acbd | 5697 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5698 | { |
3d540e93 | 5699 | char *s; |
252b5132 RH |
5700 | |
5701 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5702 | { | |
3d540e93 | 5703 | int len; |
252b5132 RH |
5704 | |
5705 | for (len = *len_pointer; len > 0; len--) | |
5706 | { | |
70433886 | 5707 | if (s[len - 1] == 0) |
252b5132 RH |
5708 | { |
5709 | s = 0; | |
252b5132 | 5710 | *len_pointer = 0; |
0e389e77 | 5711 | as_bad (_("this string may not contain \'\\0\'")); |
70433886 | 5712 | break; |
252b5132 RH |
5713 | } |
5714 | } | |
5715 | } | |
f0e652b4 | 5716 | |
252b5132 RH |
5717 | return s; |
5718 | } | |
5719 | \f | |
041ff4dd NC |
5720 | /* Demand string, but return a safe (=private) copy of the string. |
5721 | Return NULL if we can't read a string here. */ | |
5722 | ||
252b5132 | 5723 | char * |
39e6acbd | 5724 | demand_copy_string (int *lenP) |
252b5132 | 5725 | { |
3d540e93 NC |
5726 | unsigned int c; |
5727 | int len; | |
252b5132 RH |
5728 | char *retval; |
5729 | ||
5730 | len = 0; | |
5731 | SKIP_WHITESPACE (); | |
5732 | if (*input_line_pointer == '\"') | |
5733 | { | |
041ff4dd | 5734 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5735 | |
5736 | while (is_a_char (c = next_char_of_string ())) | |
5737 | { | |
5738 | obstack_1grow (¬es, c); | |
5739 | len++; | |
5740 | } | |
5741 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5742 | null terminated string. */ |
252b5132 | 5743 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5744 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5745 | } |
5746 | else | |
5747 | { | |
c95b35a9 | 5748 | as_bad (_("missing string")); |
252b5132 RH |
5749 | retval = NULL; |
5750 | ignore_rest_of_line (); | |
5751 | } | |
5752 | *lenP = len; | |
5753 | return (retval); | |
041ff4dd | 5754 | } |
252b5132 | 5755 | \f |
041ff4dd | 5756 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5757 | |
041ff4dd | 5758 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5759 | |
041ff4dd NC |
5760 | Out: 1 if input_line_pointer->end-of-line. */ |
5761 | ||
5762 | int | |
39e6acbd | 5763 | is_it_end_of_statement (void) |
252b5132 RH |
5764 | { |
5765 | SKIP_WHITESPACE (); | |
5766 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5767 | } |
252b5132 | 5768 | |
041ff4dd | 5769 | void |
39e6acbd | 5770 | equals (char *sym_name, int reassign) |
252b5132 | 5771 | { |
252b5132 | 5772 | char *stop = NULL; |
fb25138b | 5773 | char stopc = 0; |
252b5132 RH |
5774 | |
5775 | input_line_pointer++; | |
5776 | if (*input_line_pointer == '=') | |
5777 | input_line_pointer++; | |
9497f5ac NC |
5778 | if (reassign < 0 && *input_line_pointer == '=') |
5779 | input_line_pointer++; | |
252b5132 RH |
5780 | |
5781 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5782 | input_line_pointer++; | |
5783 | ||
5784 | if (flag_mri) | |
5785 | stop = mri_comment_field (&stopc); | |
5786 | ||
9497f5ac | 5787 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5788 | |
5789 | if (flag_mri) | |
31d20a21 AM |
5790 | { |
5791 | demand_empty_rest_of_line (); | |
5792 | mri_comment_end (stop, stopc); | |
5793 | } | |
041ff4dd | 5794 | } |
252b5132 | 5795 | |
7e005732 NC |
5796 | /* .incbin -- include a file verbatim at the current location. */ |
5797 | ||
5798 | void | |
39e6acbd | 5799 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5800 | { |
5801 | FILE * binfile; | |
5802 | char * path; | |
5803 | char * filename; | |
5804 | char * binfrag; | |
5805 | long skip = 0; | |
5806 | long count = 0; | |
5807 | long bytes; | |
5808 | int len; | |
5809 | ||
5810 | #ifdef md_flush_pending_output | |
5811 | md_flush_pending_output (); | |
5812 | #endif | |
5813 | ||
cc3f603a JM |
5814 | #ifdef md_cons_align |
5815 | md_cons_align (1); | |
5816 | #endif | |
5817 | ||
7e005732 NC |
5818 | SKIP_WHITESPACE (); |
5819 | filename = demand_copy_string (& len); | |
5820 | if (filename == NULL) | |
5821 | return; | |
5822 | ||
5823 | SKIP_WHITESPACE (); | |
5824 | ||
5825 | /* Look for optional skip and count. */ | |
5826 | if (* input_line_pointer == ',') | |
5827 | { | |
5828 | ++ input_line_pointer; | |
5829 | skip = get_absolute_expression (); | |
5830 | ||
5831 | SKIP_WHITESPACE (); | |
5832 | ||
5833 | if (* input_line_pointer == ',') | |
5834 | { | |
5835 | ++ input_line_pointer; | |
5836 | ||
5837 | count = get_absolute_expression (); | |
5838 | if (count == 0) | |
5839 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5840 | ||
5841 | SKIP_WHITESPACE (); | |
5842 | } | |
5843 | } | |
5844 | ||
5845 | demand_empty_rest_of_line (); | |
5846 | ||
5847 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5848 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5849 | if (binfile == NULL) |
5850 | { | |
5851 | int i; | |
5852 | ||
8860a416 | 5853 | path = XNEWVEC (char, (unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5854 | |
5855 | for (i = 0; i < include_dir_count; i++) | |
5856 | { | |
5857 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5858 | ||
f740e790 | 5859 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5860 | if (binfile != NULL) |
5861 | break; | |
5862 | } | |
5863 | ||
5864 | if (binfile == NULL) | |
5865 | as_bad (_("file not found: %s"), filename); | |
5866 | } | |
5867 | else | |
5868 | path = xstrdup (filename); | |
5869 | ||
5870 | if (binfile) | |
5871 | { | |
f740e790 | 5872 | long file_len; |
284beb43 | 5873 | struct stat filestat; |
f740e790 | 5874 | |
284beb43 NC |
5875 | if (fstat (fileno (binfile), &filestat) != 0 |
5876 | || ! S_ISREG (filestat.st_mode) | |
5877 | || S_ISDIR (filestat.st_mode)) | |
5878 | { | |
5879 | as_bad (_("unable to include `%s'"), path); | |
5880 | goto done; | |
5881 | } | |
5882 | ||
7e005732 NC |
5883 | register_dependency (path); |
5884 | ||
5885 | /* Compute the length of the file. */ | |
5886 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5887 | { | |
5888 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5889 | goto done; | |
5890 | } | |
f740e790 | 5891 | file_len = ftell (binfile); |
7e005732 | 5892 | |
c556cc9c | 5893 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5894 | if (count == 0) |
c556cc9c | 5895 | count = file_len - skip; |
7e005732 | 5896 | |
c556cc9c | 5897 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5898 | { |
c556cc9c | 5899 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5900 | skip, count, file_len); |
7e005732 NC |
5901 | goto done; |
5902 | } | |
5903 | ||
5904 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5905 | { | |
5906 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5907 | goto done; | |
5908 | } | |
5909 | ||
5910 | /* Allocate frag space and store file contents in it. */ | |
5911 | binfrag = frag_more (count); | |
5912 | ||
5913 | bytes = fread (binfrag, 1, count, binfile); | |
5914 | if (bytes < count) | |
5915 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5916 | path, bytes, count); | |
5917 | } | |
dc1e8a47 | 5918 | done: |
7e005732 NC |
5919 | if (binfile != NULL) |
5920 | fclose (binfile); | |
9fbb53c7 | 5921 | free (path); |
7e005732 NC |
5922 | } |
5923 | ||
041ff4dd | 5924 | /* .include -- include a file at this point. */ |
252b5132 | 5925 | |
041ff4dd | 5926 | void |
39e6acbd | 5927 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5928 | { |
252b5132 RH |
5929 | char *filename; |
5930 | int i; | |
1e9cc1c2 | 5931 | FILE *try_file; |
252b5132 RH |
5932 | char *path; |
5933 | ||
041ff4dd | 5934 | if (!flag_m68k_mri) |
252b5132 RH |
5935 | { |
5936 | filename = demand_copy_string (&i); | |
5937 | if (filename == NULL) | |
5938 | { | |
5939 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5940 | called ignore_rest_of_line. */ |
252b5132 RH |
5941 | return; |
5942 | } | |
5943 | } | |
5944 | else | |
5945 | { | |
5946 | SKIP_WHITESPACE (); | |
5947 | i = 0; | |
041ff4dd | 5948 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5949 | && *input_line_pointer != ' ' |
5950 | && *input_line_pointer != '\t') | |
5951 | { | |
5952 | obstack_1grow (¬es, *input_line_pointer); | |
5953 | ++input_line_pointer; | |
5954 | ++i; | |
5955 | } | |
f0e652b4 | 5956 | |
252b5132 | 5957 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5958 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5959 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5960 | ++input_line_pointer; |
5961 | } | |
f0e652b4 | 5962 | |
252b5132 | 5963 | demand_empty_rest_of_line (); |
8860a416 TS |
5964 | path = XNEWVEC (char, (unsigned long) i |
5965 | + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5966 | |
252b5132 RH |
5967 | for (i = 0; i < include_dir_count; i++) |
5968 | { | |
5969 | strcpy (path, include_dirs[i]); | |
5970 | strcat (path, "/"); | |
5971 | strcat (path, filename); | |
1e9cc1c2 | 5972 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 5973 | { |
1e9cc1c2 | 5974 | fclose (try_file); |
252b5132 RH |
5975 | goto gotit; |
5976 | } | |
5977 | } | |
f0e652b4 | 5978 | |
252b5132 RH |
5979 | free (path); |
5980 | path = filename; | |
dc1e8a47 | 5981 | gotit: |
041ff4dd | 5982 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5983 | register_dependency (path); |
9f10757c | 5984 | input_scrub_insert_file (path); |
041ff4dd | 5985 | } |
252b5132 | 5986 | |
041ff4dd | 5987 | void |
39e6acbd | 5988 | add_include_dir (char *path) |
252b5132 RH |
5989 | { |
5990 | int i; | |
5991 | ||
5992 | if (include_dir_count == 0) | |
5993 | { | |
e0471c16 | 5994 | include_dirs = XNEWVEC (const char *, 2); |
041ff4dd | 5995 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5996 | include_dir_count = 2; |
5997 | } | |
5998 | else | |
5999 | { | |
6000 | include_dir_count++; | |
e0471c16 TS |
6001 | include_dirs = XRESIZEVEC (const char *, include_dirs, |
6002 | include_dir_count); | |
252b5132 RH |
6003 | } |
6004 | ||
041ff4dd | 6005 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
6006 | |
6007 | i = strlen (path); | |
6008 | if (i > include_dir_maxlen) | |
6009 | include_dir_maxlen = i; | |
041ff4dd | 6010 | } |
252b5132 RH |
6011 | \f |
6012 | /* Output debugging information to denote the source file. */ | |
6013 | ||
6014 | static void | |
39e6acbd | 6015 | generate_file_debug (void) |
252b5132 RH |
6016 | { |
6017 | if (debug_type == DEBUG_STABS) | |
6018 | stabs_generate_asm_file (); | |
6019 | } | |
6020 | ||
6021 | /* Output line number debugging information for the current source line. */ | |
6022 | ||
6023 | void | |
39e6acbd | 6024 | generate_lineno_debug (void) |
252b5132 | 6025 | { |
252b5132 RH |
6026 | switch (debug_type) |
6027 | { | |
6028 | case DEBUG_UNSPECIFIED: | |
6029 | case DEBUG_NONE: | |
4dc7ead9 | 6030 | case DEBUG_DWARF: |
252b5132 RH |
6031 | break; |
6032 | case DEBUG_STABS: | |
6033 | stabs_generate_asm_lineno (); | |
6034 | break; | |
6035 | case DEBUG_ECOFF: | |
6036 | ecoff_generate_asm_lineno (); | |
6037 | break; | |
252b5132 | 6038 | case DEBUG_DWARF2: |
4dc7ead9 RH |
6039 | /* ??? We could here indicate to dwarf2dbg.c that something |
6040 | has changed. However, since there is additional backend | |
6041 | support that is required (calling dwarf2_emit_insn), we | |
6042 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
6043 | break; |
6044 | } | |
6045 | } | |
6046 | ||
6047 | /* Output debugging information to mark a function entry point or end point. | |
6048 | END_P is zero for .func, and non-zero for .endfunc. */ | |
6049 | ||
6050 | void | |
39e6acbd | 6051 | s_func (int end_p) |
252b5132 RH |
6052 | { |
6053 | do_s_func (end_p, NULL); | |
6054 | } | |
6055 | ||
6056 | /* Subroutine of s_func so targets can choose a different default prefix. | |
6057 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
6058 | ||
87c245cc | 6059 | static void |
39e6acbd | 6060 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
6061 | { |
6062 | /* Record the current function so that we can issue an error message for | |
6063 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
6064 | arguments. */ | |
6065 | static char *current_name; | |
6066 | static char *current_label; | |
6067 | ||
6068 | if (end_p) | |
6069 | { | |
6070 | if (current_name == NULL) | |
6071 | { | |
6072 | as_bad (_("missing .func")); | |
6073 | ignore_rest_of_line (); | |
6074 | return; | |
6075 | } | |
6076 | ||
6077 | if (debug_type == DEBUG_STABS) | |
6078 | stabs_generate_asm_endfunc (current_name, current_label); | |
6079 | ||
6080 | current_name = current_label = NULL; | |
6081 | } | |
6082 | else /* ! end_p */ | |
6083 | { | |
041ff4dd NC |
6084 | char *name, *label; |
6085 | char delim1, delim2; | |
252b5132 RH |
6086 | |
6087 | if (current_name != NULL) | |
6088 | { | |
6089 | as_bad (_(".endfunc missing for previous .func")); | |
6090 | ignore_rest_of_line (); | |
6091 | return; | |
6092 | } | |
6093 | ||
d02603dc | 6094 | delim1 = get_symbol_name (& name); |
252b5132 RH |
6095 | name = xstrdup (name); |
6096 | *input_line_pointer = delim1; | |
d02603dc | 6097 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
6098 | if (*input_line_pointer != ',') |
6099 | { | |
6100 | if (default_prefix) | |
05f4ab67 AM |
6101 | { |
6102 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
6103 | as_fatal ("%s", xstrerror (errno)); | |
6104 | } | |
252b5132 RH |
6105 | else |
6106 | { | |
7be1c489 | 6107 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
6108 | /* Missing entry point, use function's name with the leading |
6109 | char prepended. */ | |
6110 | if (leading_char) | |
05f4ab67 AM |
6111 | { |
6112 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
6113 | as_fatal ("%s", xstrerror (errno)); | |
6114 | } | |
252b5132 RH |
6115 | else |
6116 | label = name; | |
6117 | } | |
6118 | } | |
6119 | else | |
6120 | { | |
6121 | ++input_line_pointer; | |
6122 | SKIP_WHITESPACE (); | |
d02603dc | 6123 | delim2 = get_symbol_name (& label); |
252b5132 | 6124 | label = xstrdup (label); |
d02603dc | 6125 | restore_line_pointer (delim2); |
252b5132 RH |
6126 | } |
6127 | ||
6128 | if (debug_type == DEBUG_STABS) | |
6129 | stabs_generate_asm_func (name, label); | |
6130 | ||
6131 | current_name = name; | |
6132 | current_label = label; | |
6133 | } | |
6134 | ||
6135 | demand_empty_rest_of_line (); | |
6136 | } | |
6137 | \f | |
fa94de6b RM |
6138 | #ifdef HANDLE_BUNDLE |
6139 | ||
6140 | void | |
6141 | s_bundle_align_mode (int arg ATTRIBUTE_UNUSED) | |
6142 | { | |
6143 | unsigned int align = get_absolute_expression (); | |
6144 | SKIP_WHITESPACE (); | |
6145 | demand_empty_rest_of_line (); | |
6146 | ||
6147 | if (align > (unsigned int) TC_ALIGN_LIMIT) | |
6148 | as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"), | |
6149 | (unsigned int) TC_ALIGN_LIMIT); | |
6150 | ||
6151 | if (bundle_lock_frag != NULL) | |
6152 | { | |
6153 | as_bad (_("cannot change .bundle_align_mode inside .bundle_lock")); | |
6154 | return; | |
6155 | } | |
6156 | ||
6157 | bundle_align_p2 = align; | |
6158 | } | |
6159 | ||
6160 | void | |
6161 | s_bundle_lock (int arg ATTRIBUTE_UNUSED) | |
6162 | { | |
6163 | demand_empty_rest_of_line (); | |
6164 | ||
6165 | if (bundle_align_p2 == 0) | |
6166 | { | |
6167 | as_bad (_(".bundle_lock is meaningless without .bundle_align_mode")); | |
6168 | return; | |
6169 | } | |
6170 | ||
d416e51d | 6171 | if (bundle_lock_depth == 0) |
fa94de6b | 6172 | { |
d416e51d RM |
6173 | bundle_lock_frchain = frchain_now; |
6174 | bundle_lock_frag = start_bundle (); | |
fa94de6b | 6175 | } |
d416e51d | 6176 | ++bundle_lock_depth; |
fa94de6b RM |
6177 | } |
6178 | ||
6179 | void | |
6180 | s_bundle_unlock (int arg ATTRIBUTE_UNUSED) | |
6181 | { | |
6182 | unsigned int size; | |
6183 | ||
6184 | demand_empty_rest_of_line (); | |
6185 | ||
6186 | if (bundle_lock_frag == NULL) | |
6187 | { | |
6188 | as_bad (_(".bundle_unlock without preceding .bundle_lock")); | |
6189 | return; | |
6190 | } | |
6191 | ||
6192 | gas_assert (bundle_align_p2 > 0); | |
6193 | ||
d416e51d RM |
6194 | gas_assert (bundle_lock_depth > 0); |
6195 | if (--bundle_lock_depth > 0) | |
6196 | return; | |
6197 | ||
fa94de6b RM |
6198 | size = pending_bundle_size (bundle_lock_frag); |
6199 | ||
e54e9ac5 AM |
6200 | if (size > 1U << bundle_align_p2) |
6201 | as_bad (_(".bundle_lock sequence is %u bytes, " | |
6202 | "but bundle size is only %u bytes"), | |
6203 | size, 1u << bundle_align_p2); | |
fa94de6b RM |
6204 | else |
6205 | finish_bundle (bundle_lock_frag, size); | |
6206 | ||
6207 | bundle_lock_frag = NULL; | |
6208 | bundle_lock_frchain = NULL; | |
6209 | } | |
6210 | ||
6211 | #endif /* HANDLE_BUNDLE */ | |
6212 | \f | |
041ff4dd | 6213 | void |
39e6acbd | 6214 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6215 | { |
40a4d956 | 6216 | ignore_rest_of_line (); |
252b5132 RH |
6217 | } |
6218 | ||
252b5132 | 6219 | void |
39e6acbd | 6220 | read_print_statistics (FILE *file) |
252b5132 | 6221 | { |
32e4c1c2 | 6222 | htab_print_statistics (file, "pseudo-op table", po_hash); |
252b5132 RH |
6223 | } |
6224 | ||
041ff4dd NC |
6225 | /* Inserts the given line into the input stream. |
6226 | ||
9f10757c TW |
6227 | This call avoids macro/conditionals nesting checking, since the contents of |
6228 | the line are assumed to replace the contents of a line already scanned. | |
6229 | ||
47eebc20 | 6230 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
6231 | called by md_start_line_hook(). The given line is assumed to already be |
6232 | properly scrubbed. */ | |
6233 | ||
6234 | void | |
39e6acbd | 6235 | input_scrub_insert_line (const char *line) |
9f10757c TW |
6236 | { |
6237 | sb newline; | |
d2ae702c L |
6238 | size_t len = strlen (line); |
6239 | sb_build (&newline, len); | |
6240 | sb_add_buffer (&newline, line, len); | |
9f10757c TW |
6241 | input_scrub_include_sb (&newline, input_line_pointer, 0); |
6242 | sb_kill (&newline); | |
6243 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6244 | } | |
6245 | ||
6246 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 6247 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
6248 | |
6249 | void | |
39e6acbd | 6250 | input_scrub_insert_file (char *path) |
9f10757c TW |
6251 | { |
6252 | input_scrub_include_file (path, input_line_pointer); | |
6253 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6254 | } | |
40a4d956 JB |
6255 | |
6256 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
6257 | ||
6258 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
6259 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
6260 | #endif | |
6261 | ||
6262 | static char * | |
7592cfd7 NC |
6263 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
6264 | int in_macro) | |
40a4d956 JB |
6265 | { |
6266 | char inquote = '\0'; | |
6267 | int inescape = 0; | |
6268 | ||
6269 | while (!is_end_of_line[(unsigned char) *s] | |
6270 | || (inquote && !ISCNTRL (*s)) | |
6271 | || (inquote == '\'' && flag_mri) | |
6272 | #ifdef TC_EOL_IN_INSN | |
6273 | || (insn && TC_EOL_IN_INSN (s)) | |
6274 | #endif | |
7592cfd7 NC |
6275 | /* PR 6926: When we are parsing the body of a macro the sequence |
6276 | \@ is special - it refers to the invocation count. If the @ | |
6277 | character happens to be registered as a line-separator character | |
6278 | by the target, then the is_end_of_line[] test above will have | |
6279 | returned true, but we need to ignore the line separating | |
6280 | semantics in this particular case. */ | |
6281 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
6282 | ) |
6283 | { | |
6284 | if (mri_string && *s == '\'') | |
6285 | inquote ^= *s; | |
6286 | else if (inescape) | |
6287 | inescape = 0; | |
6288 | else if (*s == '\\') | |
6289 | inescape = 1; | |
6290 | else if (!inquote | |
6291 | ? *s == '"' | |
6292 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
6293 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
6294 | #endif | |
6295 | : *s == inquote) | |
6296 | inquote ^= *s; | |
6297 | ++s; | |
6298 | } | |
6299 | if (inquote) | |
6300 | as_warn (_("missing closing `%c'"), inquote); | |
e74211b6 | 6301 | if (inescape && !ignore_input ()) |
40a4d956 JB |
6302 | as_warn (_("stray `\\'")); |
6303 | return s; | |
6304 | } | |
6305 | ||
6306 | char * | |
6307 | find_end_of_line (char *s, int mri_string) | |
6308 | { | |
7592cfd7 | 6309 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 6310 | } |
1181551e NC |
6311 | |
6312 | static char *saved_ilp = NULL; | |
6313 | static char *saved_limit; | |
6314 | ||
6315 | /* Use BUF as a temporary input pointer for calling other functions in this | |
6316 | file. BUF must be a C string, so that its end can be found by strlen. | |
6317 | Also sets the buffer_limit variable (local to this file) so that buffer | |
6318 | overruns should not occur. Saves the current input line pointer so that | |
6319 | it can be restored by calling restore_ilp(). | |
6320 | ||
af60449c | 6321 | Does not support recursion. */ |
1181551e NC |
6322 | |
6323 | void | |
6324 | temp_ilp (char *buf) | |
6325 | { | |
6326 | gas_assert (saved_ilp == NULL); | |
6327 | gas_assert (buf != NULL); | |
6328 | ||
6329 | saved_ilp = input_line_pointer; | |
6330 | saved_limit = buffer_limit; | |
6331 | /* Prevent the assert in restore_ilp from triggering if | |
6332 | the input_line_pointer has not yet been initialised. */ | |
6333 | if (saved_ilp == NULL) | |
6334 | saved_limit = saved_ilp = (char *) ""; | |
6335 | ||
6336 | input_line_pointer = buf; | |
6337 | buffer_limit = buf + strlen (buf); | |
5b7c81bd | 6338 | input_from_string = true; |
1181551e NC |
6339 | } |
6340 | ||
6341 | /* Restore a saved input line pointer. */ | |
6342 | ||
6343 | void | |
6344 | restore_ilp (void) | |
6345 | { | |
6346 | gas_assert (saved_ilp != NULL); | |
6347 | ||
6348 | input_line_pointer = saved_ilp; | |
6349 | buffer_limit = saved_limit; | |
5b7c81bd | 6350 | input_from_string = false; |
1181551e NC |
6351 | |
6352 | saved_ilp = NULL; | |
6353 | } |