Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
b3adc24a | 2 | Copyright (C) 1986-2020 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. */ |
2469b3c5 | 67 | bfd_boolean 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 AM |
367 | #ifdef TC_ADDRESS_BYTES |
368 | {"dc.a", cons, 0}, | |
369 | #endif | |
252b5132 RH |
370 | {"dc.b", cons, 1}, |
371 | {"dc.d", float_cons, 'd'}, | |
372 | {"dc.l", cons, 4}, | |
373 | {"dc.s", float_cons, 'f'}, | |
374 | {"dc.w", cons, 2}, | |
375 | {"dc.x", float_cons, 'x'}, | |
376 | {"dcb", s_space, 2}, | |
377 | {"dcb.b", s_space, 1}, | |
378 | {"dcb.d", s_float_space, 'd'}, | |
379 | {"dcb.l", s_space, 4}, | |
380 | {"dcb.s", s_float_space, 'f'}, | |
381 | {"dcb.w", s_space, 2}, | |
382 | {"dcb.x", s_float_space, 'x'}, | |
383 | {"ds", s_space, 2}, | |
384 | {"ds.b", s_space, 1}, | |
385 | {"ds.d", s_space, 8}, | |
386 | {"ds.l", s_space, 4}, | |
387 | {"ds.p", s_space, 12}, | |
388 | {"ds.s", s_space, 4}, | |
389 | {"ds.w", s_space, 2}, | |
390 | {"ds.x", s_space, 12}, | |
391 | {"debug", s_ignore, 0}, | |
392 | #ifdef S_SET_DESC | |
393 | {"desc", s_desc, 0}, | |
394 | #endif | |
041ff4dd | 395 | /* dim */ |
252b5132 | 396 | {"double", float_cons, 'd'}, |
041ff4dd NC |
397 | /* dsect */ |
398 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
399 | {"else", s_else, 0}, |
400 | {"elsec", s_else, 0}, | |
3fd9f047 | 401 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
402 | {"end", s_end, 0}, |
403 | {"endc", s_endif, 0}, | |
404 | {"endfunc", s_func, 1}, | |
405 | {"endif", s_endif, 0}, | |
057f53c1 JB |
406 | {"endm", s_bad_end, 0}, |
407 | {"endr", s_bad_end, 1}, | |
041ff4dd | 408 | /* endef */ |
252b5132 RH |
409 | {"equ", s_set, 0}, |
410 | {"equiv", s_set, 1}, | |
9497f5ac | 411 | {"eqv", s_set, -1}, |
252b5132 | 412 | {"err", s_err, 0}, |
d190d046 | 413 | {"error", s_errwarn, 1}, |
252b5132 | 414 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
415 | /* extend */ |
416 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 | 417 | {"appfile", s_app_file, 1}, |
93e914b2 | 418 | {"appline", s_app_line, 1}, |
252b5132 RH |
419 | {"fail", s_fail, 0}, |
420 | {"file", s_app_file, 0}, | |
421 | {"fill", s_fill, 0}, | |
422 | {"float", float_cons, 'f'}, | |
423 | {"format", s_ignore, 0}, | |
424 | {"func", s_func, 0}, | |
425 | {"global", s_globl, 0}, | |
426 | {"globl", s_globl, 0}, | |
427 | {"hword", cons, 2}, | |
428 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 429 | {"ifb", s_ifb, 1}, |
252b5132 RH |
430 | {"ifc", s_ifc, 0}, |
431 | {"ifdef", s_ifdef, 0}, | |
432 | {"ifeq", s_if, (int) O_eq}, | |
433 | {"ifeqs", s_ifeqs, 0}, | |
434 | {"ifge", s_if, (int) O_ge}, | |
435 | {"ifgt", s_if, (int) O_gt}, | |
436 | {"ifle", s_if, (int) O_le}, | |
437 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 438 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
439 | {"ifnc", s_ifc, 1}, |
440 | {"ifndef", s_ifdef, 1}, | |
441 | {"ifne", s_if, (int) O_ne}, | |
442 | {"ifnes", s_ifeqs, 1}, | |
443 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 444 | {"incbin", s_incbin, 0}, |
252b5132 RH |
445 | {"include", s_include, 0}, |
446 | {"int", cons, 4}, | |
447 | {"irp", s_irp, 0}, | |
448 | {"irep", s_irp, 0}, | |
449 | {"irpc", s_irp, 1}, | |
450 | {"irepc", s_irp, 1}, | |
451 | {"lcomm", s_lcomm, 0}, | |
c2069bb2 | 452 | {"lflags", s_ignore, 0}, /* Listing flags. */ |
93e914b2 | 453 | {"linefile", s_app_line, 0}, |
252b5132 | 454 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 455 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
456 | {"llen", listing_psize, 1}, |
457 | {"long", cons, 4}, | |
458 | {"lsym", s_lsym, 0}, | |
459 | {"macro", s_macro, 0}, | |
460 | {"mexit", s_mexit, 0}, | |
461 | {"mri", s_mri, 0}, | |
462 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
463 | {"name", s_ignore, 0}, | |
caa32fe5 | 464 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 465 | {"noformat", s_ignore, 0}, |
041ff4dd | 466 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 | 467 | {"nopage", listing_nopage, 0}, |
8f065d3b | 468 | {"nops", s_nops, 0}, |
252b5132 RH |
469 | {"octa", cons, 16}, |
470 | {"offset", s_struct, 0}, | |
471 | {"org", s_org, 0}, | |
472 | {"p2align", s_align_ptwo, 0}, | |
473 | {"p2alignw", s_align_ptwo, -2}, | |
474 | {"p2alignl", s_align_ptwo, -4}, | |
475 | {"page", listing_eject, 0}, | |
476 | {"plen", listing_psize, 0}, | |
477 | {"print", s_print, 0}, | |
041ff4dd | 478 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
479 | {"purgem", s_purgem, 0}, |
480 | {"quad", cons, 8}, | |
05e9452c | 481 | {"reloc", s_reloc, 0}, |
252b5132 RH |
482 | {"rep", s_rept, 0}, |
483 | {"rept", s_rept, 0}, | |
484 | {"rva", s_rva, 4}, | |
041ff4dd NC |
485 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
486 | /* scl */ | |
487 | /* sect */ | |
252b5132 RH |
488 | {"set", s_set, 0}, |
489 | {"short", cons, 2}, | |
490 | {"single", float_cons, 'f'}, | |
041ff4dd | 491 | /* size */ |
252b5132 RH |
492 | {"space", s_space, 0}, |
493 | {"skip", s_space, 0}, | |
494 | {"sleb128", s_leb128, 1}, | |
495 | {"spc", s_ignore, 0}, | |
496 | {"stabd", s_stab, 'd'}, | |
497 | {"stabn", s_stab, 'n'}, | |
498 | {"stabs", s_stab, 's'}, | |
38a57ae7 NC |
499 | {"string", stringer, 8+1}, |
500 | {"string8", stringer, 8+1}, | |
501 | {"string16", stringer, 16+1}, | |
502 | {"string32", stringer, 32+1}, | |
503 | {"string64", stringer, 64+1}, | |
252b5132 | 504 | {"struct", s_struct, 0}, |
041ff4dd | 505 | /* tag */ |
252b5132 RH |
506 | {"text", s_text, 0}, |
507 | ||
508 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
509 | won't be able to use it for a while -- probably a year or more. | |
510 | But once this has been released, check with gcc maintainers | |
511 | before deleting it or even changing the spelling. */ | |
512 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
513 | /* If we're folding case -- done for some targets, not necessarily | |
514 | all -- the above string in an input file will be converted to | |
515 | this one. Match it either way... */ | |
516 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
517 | ||
041ff4dd | 518 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 519 | {"ttl", listing_title, 0}, |
041ff4dd | 520 | /* type */ |
252b5132 | 521 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
522 | /* use */ |
523 | /* val */ | |
252b5132 RH |
524 | {"xcom", s_comm, 0}, |
525 | {"xdef", s_globl, 0}, | |
526 | {"xref", s_ignore, 0}, | |
527 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 528 | {"warning", s_errwarn, 0}, |
06e77878 | 529 | {"weakref", s_weakref, 0}, |
252b5132 RH |
530 | {"word", cons, 2}, |
531 | {"zero", s_space, 0}, | |
041ff4dd | 532 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
533 | }; |
534 | ||
87c245cc BE |
535 | static offsetT |
536 | get_absolute_expr (expressionS *exp) | |
537 | { | |
9497f5ac | 538 | expression_and_evaluate (exp); |
9136aa49 | 539 | |
87c245cc BE |
540 | if (exp->X_op != O_constant) |
541 | { | |
542 | if (exp->X_op != O_absent) | |
543 | as_bad (_("bad or irreducible absolute expression")); | |
544 | exp->X_add_number = 0; | |
545 | } | |
546 | return exp->X_add_number; | |
547 | } | |
548 | ||
549 | offsetT | |
550 | get_absolute_expression (void) | |
551 | { | |
552 | expressionS exp; | |
553 | ||
554 | return get_absolute_expr (&exp); | |
555 | } | |
556 | ||
252b5132 RH |
557 | static int pop_override_ok = 0; |
558 | static const char *pop_table_name; | |
559 | ||
560 | void | |
39e6acbd | 561 | pop_insert (const pseudo_typeS *table) |
252b5132 | 562 | { |
252b5132 RH |
563 | const pseudo_typeS *pop; |
564 | for (pop = table; pop->poc_name; pop++) | |
565 | { | |
32e4c1c2 ML |
566 | int exists = po_entry_find (po_hash, pop->poc_name) != NULL; |
567 | if (!pop_override_ok && exists) | |
568 | as_fatal (_("error constructing %s pseudo-op table"), pop_table_name); | |
569 | else if (!exists) | |
570 | htab_insert (po_hash, po_entry_alloc (pop->poc_name, pop)); | |
252b5132 RH |
571 | } |
572 | } | |
573 | ||
574 | #ifndef md_pop_insert | |
575 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
576 | #endif | |
577 | ||
578 | #ifndef obj_pop_insert | |
579 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
580 | #endif | |
581 | ||
54cfded0 AM |
582 | #ifndef cfi_pop_insert |
583 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
584 | #endif | |
585 | ||
041ff4dd | 586 | static void |
39e6acbd | 587 | pobegin (void) |
252b5132 | 588 | { |
32e4c1c2 ML |
589 | po_hash = htab_create_alloc (16, hash_po_entry, eq_po_entry, NULL, |
590 | xcalloc, xfree); | |
252b5132 | 591 | |
041ff4dd | 592 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
593 | pop_table_name = "md"; |
594 | md_pop_insert (); | |
595 | ||
041ff4dd | 596 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
597 | pop_table_name = "obj"; |
598 | pop_override_ok = 1; | |
599 | obj_pop_insert (); | |
600 | ||
041ff4dd | 601 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
602 | pop_table_name = "standard"; |
603 | pop_insert (potable); | |
d6415f6c | 604 | |
d58a1929 | 605 | /* Now CFI ones. */ |
54cfded0 AM |
606 | pop_table_name = "cfi"; |
607 | pop_override_ok = 1; | |
608 | cfi_pop_insert (); | |
252b5132 RH |
609 | } |
610 | \f | |
e74211b6 | 611 | #define HANDLE_CONDITIONAL_ASSEMBLY(num_read) \ |
252b5132 RH |
612 | if (ignore_input ()) \ |
613 | { \ | |
e74211b6 JB |
614 | char *eol = find_end_of_line (input_line_pointer - (num_read), \ |
615 | flag_m68k_mri); \ | |
40a4d956 JB |
616 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
617 | && eol >= buffer_limit) \ | |
618 | ? buffer_limit \ | |
619 | : eol + 1; \ | |
252b5132 RH |
620 | continue; \ |
621 | } | |
622 | ||
252b5132 RH |
623 | /* This function is used when scrubbing the characters between #APP |
624 | and #NO_APP. */ | |
625 | ||
626 | static char *scrub_string; | |
627 | static char *scrub_string_end; | |
628 | ||
39a45edc AM |
629 | static size_t |
630 | scrub_from_string (char *buf, size_t buflen) | |
252b5132 | 631 | { |
39a45edc | 632 | size_t copy; |
2b47531b ILT |
633 | |
634 | copy = scrub_string_end - scrub_string; | |
635 | if (copy > buflen) | |
636 | copy = buflen; | |
637 | memcpy (buf, scrub_string, copy); | |
638 | scrub_string += copy; | |
639 | return copy; | |
252b5132 RH |
640 | } |
641 | ||
5e75c3ab JB |
642 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
643 | static int | |
644 | try_macro (char term, const char *line) | |
645 | { | |
646 | sb out; | |
647 | const char *err; | |
648 | macro_entry *macro; | |
649 | ||
650 | if (check_macro (line, &out, &err, ¯o)) | |
651 | { | |
652 | if (err != NULL) | |
653 | as_bad ("%s", err); | |
654 | *input_line_pointer++ = term; | |
655 | input_scrub_include_sb (&out, | |
656 | input_line_pointer, 1); | |
657 | sb_kill (&out); | |
658 | buffer_limit = | |
659 | input_scrub_next_buffer (&input_line_pointer); | |
660 | #ifdef md_macro_info | |
661 | md_macro_info (macro); | |
662 | #endif | |
663 | return 1; | |
664 | } | |
665 | return 0; | |
666 | } | |
667 | ||
fa94de6b RM |
668 | #ifdef HANDLE_BUNDLE |
669 | /* Start a new instruction bundle. Returns the rs_align_code frag that | |
670 | will be used to align the new bundle. */ | |
671 | static fragS * | |
672 | start_bundle (void) | |
673 | { | |
674 | fragS *frag = frag_now; | |
675 | ||
676 | frag_align_code (0, 0); | |
677 | ||
678 | while (frag->fr_type != rs_align_code) | |
679 | frag = frag->fr_next; | |
680 | ||
681 | gas_assert (frag != frag_now); | |
682 | ||
683 | return frag; | |
684 | } | |
685 | ||
686 | /* Calculate the maximum size after relaxation of the region starting | |
687 | at the given frag and extending through frag_now (which is unfinished). */ | |
688 | static unsigned int | |
689 | pending_bundle_size (fragS *frag) | |
690 | { | |
691 | unsigned int offset = frag->fr_fix; | |
692 | unsigned int size = 0; | |
693 | ||
694 | gas_assert (frag != frag_now); | |
695 | gas_assert (frag->fr_type == rs_align_code); | |
696 | ||
697 | while (frag != frag_now) | |
698 | { | |
699 | /* This should only happen in what will later become an error case. */ | |
700 | if (frag == NULL) | |
701 | return 0; | |
702 | ||
703 | size += frag->fr_fix; | |
704 | if (frag->fr_type == rs_machine_dependent) | |
705 | size += md_frag_max_var (frag); | |
706 | ||
707 | frag = frag->fr_next; | |
708 | } | |
709 | ||
710 | gas_assert (frag == frag_now); | |
711 | size += frag_now_fix (); | |
712 | if (frag->fr_type == rs_machine_dependent) | |
713 | size += md_frag_max_var (frag); | |
714 | ||
715 | gas_assert (size >= offset); | |
716 | ||
717 | return size - offset; | |
718 | } | |
719 | ||
720 | /* Finish off the frag created to ensure bundle alignment. */ | |
721 | static void | |
722 | finish_bundle (fragS *frag, unsigned int size) | |
723 | { | |
724 | gas_assert (bundle_align_p2 > 0); | |
725 | gas_assert (frag->fr_type == rs_align_code); | |
726 | ||
727 | if (size > 1) | |
728 | { | |
729 | /* If there is more than a single byte, then we need to set up the | |
730 | alignment frag. Otherwise we leave it at its initial state from | |
731 | calling frag_align_code (0, 0), so that it does nothing. */ | |
732 | frag->fr_offset = bundle_align_p2; | |
733 | frag->fr_subtype = size - 1; | |
734 | } | |
735 | ||
736 | /* We do this every time rather than just in s_bundle_align_mode | |
737 | so that we catch any affected section without needing hooks all | |
738 | over for all paths that do section changes. It's cheap enough. */ | |
9136aa49 DG |
739 | if (bundle_align_p2 > OCTETS_PER_BYTE_POWER) |
740 | record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER); | |
fa94de6b RM |
741 | } |
742 | ||
743 | /* Assemble one instruction. This takes care of the bundle features | |
744 | around calling md_assemble. */ | |
745 | static void | |
746 | assemble_one (char *line) | |
747 | { | |
8d3eaee6 | 748 | fragS *insn_start_frag = NULL; |
fa94de6b RM |
749 | |
750 | if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now) | |
751 | { | |
752 | as_bad (_("cannot change section or subsection inside .bundle_lock")); | |
753 | /* Clearing this serves as a marker that we have already complained. */ | |
754 | bundle_lock_frchain = NULL; | |
755 | } | |
756 | ||
757 | if (bundle_lock_frchain == NULL && bundle_align_p2 > 0) | |
758 | insn_start_frag = start_bundle (); | |
759 | ||
760 | md_assemble (line); | |
761 | ||
762 | if (bundle_lock_frchain != NULL) | |
763 | { | |
764 | /* Make sure this hasn't pushed the locked sequence | |
765 | past the bundle size. */ | |
766 | unsigned int bundle_size = pending_bundle_size (bundle_lock_frag); | |
e54e9ac5 AM |
767 | if (bundle_size > 1U << bundle_align_p2) |
768 | as_bad (_ (".bundle_lock sequence at %u bytes, " | |
769 | "but .bundle_align_mode limit is %u bytes"), | |
fa94de6b RM |
770 | bundle_size, 1U << bundle_align_p2); |
771 | } | |
772 | else if (bundle_align_p2 > 0) | |
773 | { | |
774 | unsigned int insn_size = pending_bundle_size (insn_start_frag); | |
775 | ||
e54e9ac5 AM |
776 | if (insn_size > 1U << bundle_align_p2) |
777 | as_bad (_("single instruction is %u bytes long, " | |
778 | "but .bundle_align_mode limit is %u bytes"), | |
779 | insn_size, 1U << bundle_align_p2); | |
fa94de6b RM |
780 | |
781 | finish_bundle (insn_start_frag, insn_size); | |
782 | } | |
783 | } | |
784 | ||
785 | #else /* !HANDLE_BUNDLE */ | |
786 | ||
787 | # define assemble_one(line) md_assemble(line) | |
788 | ||
789 | #endif /* HANDLE_BUNDLE */ | |
790 | ||
9136aa49 DG |
791 | static bfd_boolean |
792 | in_bss (void) | |
793 | { | |
fd361982 | 794 | flagword flags = bfd_section_flags (now_seg); |
9136aa49 DG |
795 | |
796 | return (flags & SEC_ALLOC) && !(flags & (SEC_LOAD | SEC_HAS_CONTENTS)); | |
797 | } | |
798 | ||
799 | /* Guts of .align directive: | |
800 | N is the power of two to which to align. A value of zero is accepted but | |
801 | ignored: the default alignment of the section will be at least this. | |
802 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
803 | LEN is the length of whatever FILL points to, if anything. If LEN is zero | |
804 | but FILL is not NULL then LEN is treated as if it were one. | |
805 | MAX is the maximum number of characters to skip when doing the alignment, | |
806 | or 0 if there is no maximum. */ | |
807 | ||
f86f5863 | 808 | void |
9136aa49 DG |
809 | do_align (unsigned int n, char *fill, unsigned int len, unsigned int max) |
810 | { | |
811 | if (now_seg == absolute_section || in_bss ()) | |
812 | { | |
813 | if (fill != NULL) | |
814 | while (len-- > 0) | |
815 | if (*fill++ != '\0') | |
816 | { | |
817 | if (now_seg == absolute_section) | |
818 | as_warn (_("ignoring fill value in absolute section")); | |
819 | else | |
820 | as_warn (_("ignoring fill value in section `%s'"), | |
821 | segment_name (now_seg)); | |
822 | break; | |
823 | } | |
824 | fill = NULL; | |
825 | len = 0; | |
826 | } | |
827 | ||
828 | #ifdef md_flush_pending_output | |
829 | md_flush_pending_output (); | |
830 | #endif | |
831 | ||
832 | #ifdef md_do_align | |
833 | md_do_align (n, fill, len, max, just_record_alignment); | |
834 | #endif | |
835 | ||
836 | /* Only make a frag if we HAVE to... */ | |
837 | if ((n > OCTETS_PER_BYTE_POWER) && !need_pass_2) | |
838 | { | |
839 | if (fill == NULL) | |
840 | { | |
841 | if (subseg_text_p (now_seg)) | |
842 | frag_align_code (n, max); | |
843 | else | |
844 | frag_align (n, 0, max); | |
845 | } | |
846 | else if (len <= 1) | |
847 | frag_align (n, *fill, max); | |
848 | else | |
849 | frag_align_pattern (n, fill, len, max); | |
850 | } | |
851 | ||
852 | #ifdef md_do_align | |
853 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL | |
854 | #endif | |
855 | ||
856 | if (n > OCTETS_PER_BYTE_POWER) | |
857 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); | |
858 | } | |
859 | ||
041ff4dd NC |
860 | /* We read the file, putting things into a web that represents what we |
861 | have been reading. */ | |
862 | void | |
e0471c16 | 863 | read_a_source_file (const char *name) |
252b5132 | 864 | { |
d02603dc NC |
865 | char nul_char; |
866 | char next_char; | |
91d6fa6a | 867 | char *s; /* String of symbol, '\0' appended. */ |
d27aad4e | 868 | long temp; |
32e4c1c2 | 869 | const pseudo_typeS *pop; |
252b5132 | 870 | |
4c400d5e AM |
871 | #ifdef WARN_COMMENTS |
872 | found_comment = 0; | |
873 | #endif | |
874 | ||
252b5132 RH |
875 | buffer = input_scrub_new_file (name); |
876 | ||
877 | listing_file (name); | |
878 | listing_newline (NULL); | |
879 | register_dependency (name); | |
880 | ||
881 | /* Generate debugging information before we've read anything in to denote | |
882 | this file as the "main" source file and not a subordinate one | |
883 | (e.g. N_SO vs N_SOL in stabs). */ | |
884 | generate_file_debug (); | |
885 | ||
886 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 887 | { /* We have another line to parse. */ |
5e75c3ab JB |
888 | #ifndef NO_LISTING |
889 | /* In order to avoid listing macro expansion lines with labels | |
890 | multiple times, keep track of which line was last issued. */ | |
891 | static char *last_eol; | |
892 | ||
893 | last_eol = NULL; | |
894 | #endif | |
252b5132 RH |
895 | while (input_line_pointer < buffer_limit) |
896 | { | |
f19df8f7 | 897 | bfd_boolean was_new_line; |
041ff4dd | 898 | /* We have more of this buffer to parse. */ |
252b5132 | 899 | |
041ff4dd NC |
900 | /* We now have input_line_pointer->1st char of next line. |
901 | If input_line_pointer [-1] == '\n' then we just | |
902 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
903 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
904 | if (was_new_line) | |
252b5132 | 905 | { |
4a826962 | 906 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
907 | #ifdef md_start_line_hook |
908 | md_start_line_hook (); | |
909 | #endif | |
252b5132 RH |
910 | if (input_line_pointer[-1] == '\n') |
911 | bump_line_counters (); | |
f19df8f7 | 912 | } |
252b5132 | 913 | |
f19df8f7 AM |
914 | #ifndef NO_LISTING |
915 | /* If listing is on, and we are expanding a macro, then give | |
916 | the listing code the contents of the expanded line. */ | |
917 | if (listing) | |
918 | { | |
919 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
920 | { | |
921 | /* Find the end of the current expanded macro line. */ | |
922 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
923 | ||
924 | if (s != last_eol) | |
925 | { | |
926 | char *copy; | |
927 | int len; | |
928 | ||
929 | last_eol = s; | |
930 | /* Copy it for safe keeping. Also give an indication of | |
931 | how much macro nesting is involved at this point. */ | |
932 | len = s - input_line_pointer; | |
8860a416 | 933 | copy = XNEWVEC (char, len + macro_nest + 2); |
f19df8f7 AM |
934 | memset (copy, '>', macro_nest); |
935 | copy[macro_nest] = ' '; | |
936 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
937 | copy[macro_nest + 1 + len] = '\0'; | |
938 | ||
939 | /* Install the line with the listing facility. */ | |
940 | listing_newline (copy); | |
941 | } | |
942 | } | |
943 | else | |
944 | listing_newline (NULL); | |
945 | } | |
946 | #endif | |
947 | if (was_new_line) | |
948 | { | |
252b5132 RH |
949 | line_label = NULL; |
950 | ||
abd63a32 | 951 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 | 952 | { |
d02603dc | 953 | next_char = * input_line_pointer; |
252b5132 RH |
954 | /* Text at the start of a line must be a label, we |
955 | run down and stick a colon in. */ | |
d02603dc | 956 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 957 | { |
d02603dc | 958 | char *line_start; |
252b5132 RH |
959 | int mri_line_macro; |
960 | ||
e74211b6 | 961 | HANDLE_CONDITIONAL_ASSEMBLY (0); |
252b5132 | 962 | |
d02603dc NC |
963 | nul_char = get_symbol_name (& line_start); |
964 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
252b5132 RH |
965 | |
966 | /* In MRI mode, the EQU and MACRO pseudoops must | |
967 | be handled specially. */ | |
968 | mri_line_macro = 0; | |
969 | if (flag_m68k_mri) | |
970 | { | |
971 | char *rest = input_line_pointer + 1; | |
972 | ||
973 | if (*rest == ':') | |
974 | ++rest; | |
975 | if (*rest == ' ' || *rest == '\t') | |
976 | ++rest; | |
977 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
978 | || strncasecmp (rest, "SET", 3) == 0) | |
979 | && (rest[3] == ' ' || rest[3] == '\t')) | |
980 | { | |
981 | input_line_pointer = rest + 3; | |
982 | equals (line_start, | |
983 | strncasecmp (rest, "SET", 3) == 0); | |
984 | continue; | |
985 | } | |
986 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
987 | && (rest[5] == ' ' | |
988 | || rest[5] == '\t' | |
989 | || is_end_of_line[(unsigned char) rest[5]])) | |
990 | mri_line_macro = 1; | |
991 | } | |
992 | ||
993 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
994 | pseudo-op specially: we don't want to put the |
995 | symbol in the symbol table. */ | |
041ff4dd | 996 | if (!mri_line_macro |
a25c045a | 997 | #ifdef TC_START_LABEL_WITHOUT_COLON |
2e57ce7b | 998 | && TC_START_LABEL_WITHOUT_COLON (nul_char, next_char) |
a25c045a | 999 | #endif |
ef99799a | 1000 | ) |
252b5132 RH |
1001 | line_label = colon (line_start); |
1002 | else | |
1003 | line_label = symbol_create (line_start, | |
1004 | absolute_section, | |
e01e1cee | 1005 | &zero_address_frag, 0); |
252b5132 | 1006 | |
d02603dc NC |
1007 | next_char = restore_line_pointer (nul_char); |
1008 | if (next_char == ':') | |
252b5132 RH |
1009 | input_line_pointer++; |
1010 | } | |
1011 | } | |
1012 | } | |
1013 | ||
47eebc20 | 1014 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
1015 | We expect a well-formed assembler statement. |
1016 | A "symbol-name:" is a statement. | |
f0e652b4 | 1017 | |
041ff4dd NC |
1018 | Depending on what compiler is used, the order of these tests |
1019 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
1020 | Each test is independent of all other tests at the (top) |
1021 | level. */ | |
1022 | do | |
d02603dc NC |
1023 | nul_char = next_char = *input_line_pointer++; |
1024 | while (next_char == '\t' || next_char == ' ' || next_char == '\f'); | |
252b5132 | 1025 | |
041ff4dd NC |
1026 | /* C is the 1st significant character. |
1027 | Input_line_pointer points after that character. */ | |
d02603dc | 1028 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 1029 | { |
d02603dc NC |
1030 | char *rest; |
1031 | ||
041ff4dd | 1032 | /* Want user-defined label or pseudo/opcode. */ |
e74211b6 | 1033 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1034 | |
d02603dc NC |
1035 | --input_line_pointer; |
1036 | nul_char = get_symbol_name (& s); /* name's delimiter. */ | |
1037 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
1038 | rest = input_line_pointer + (nul_char == '"' ? 2 : 1); | |
041ff4dd | 1039 | |
d02603dc NC |
1040 | /* NEXT_CHAR is character after symbol. |
1041 | The end of symbol in the input line is now '\0'. | |
d6415f6c AM |
1042 | S points to the beginning of the symbol. |
1043 | [In case of pseudo-op, s->'.'.] | |
d02603dc | 1044 | Input_line_pointer->'\0' where NUL_CHAR was. */ |
2e57ce7b | 1045 | if (TC_START_LABEL (s, nul_char, next_char)) |
252b5132 RH |
1046 | { |
1047 | if (flag_m68k_mri) | |
1048 | { | |
252b5132 | 1049 | /* In MRI mode, \tsym: set 0 is permitted. */ |
252b5132 RH |
1050 | if (*rest == ':') |
1051 | ++rest; | |
f0e652b4 | 1052 | |
252b5132 RH |
1053 | if (*rest == ' ' || *rest == '\t') |
1054 | ++rest; | |
f0e652b4 | 1055 | |
252b5132 RH |
1056 | if ((strncasecmp (rest, "EQU", 3) == 0 |
1057 | || strncasecmp (rest, "SET", 3) == 0) | |
1058 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1059 | { | |
1060 | input_line_pointer = rest + 3; | |
1061 | equals (s, 1); | |
1062 | continue; | |
1063 | } | |
1064 | } | |
1065 | ||
041ff4dd | 1066 | line_label = colon (s); /* User-defined label. */ |
d02603dc NC |
1067 | restore_line_pointer (nul_char); |
1068 | ++ input_line_pointer; | |
a645d1eb L |
1069 | #ifdef tc_check_label |
1070 | tc_check_label (line_label); | |
1071 | #endif | |
041ff4dd | 1072 | /* Input_line_pointer->after ':'. */ |
252b5132 | 1073 | SKIP_WHITESPACE (); |
252b5132 | 1074 | } |
d02603dc NC |
1075 | else if ((next_char == '=' && *rest == '=') |
1076 | || ((next_char == ' ' || next_char == '\t') | |
1077 | && rest[0] == '=' | |
1078 | && rest[1] == '=')) | |
9497f5ac NC |
1079 | { |
1080 | equals (s, -1); | |
1081 | demand_empty_rest_of_line (); | |
1082 | } | |
d02603dc NC |
1083 | else if ((next_char == '=' |
1084 | || ((next_char == ' ' || next_char == '\t') | |
1085 | && *rest == '=')) | |
ee3c9814 | 1086 | #ifdef TC_EQUAL_IN_INSN |
d02603dc | 1087 | && !TC_EQUAL_IN_INSN (next_char, s) |
ee3c9814 | 1088 | #endif |
fa94de6b | 1089 | ) |
252b5132 RH |
1090 | { |
1091 | equals (s, 1); | |
1092 | demand_empty_rest_of_line (); | |
1093 | } | |
1094 | else | |
041ff4dd NC |
1095 | { |
1096 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
1097 | pop = NULL; |
1098 | ||
a8a3b3b2 | 1099 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
1100 | { |
1101 | char *s2 = s; | |
37d8bb27 | 1102 | |
42135cad AM |
1103 | strncpy (original_case_string, s2, |
1104 | sizeof (original_case_string) - 1); | |
37d8bb27 | 1105 | original_case_string[sizeof (original_case_string) - 1] = 0; |
ef99799a | 1106 | |
252b5132 RH |
1107 | while (*s2) |
1108 | { | |
3882b010 | 1109 | *s2 = TOLOWER (*s2); |
252b5132 RH |
1110 | s2++; |
1111 | } | |
1112 | } | |
1113 | #endif | |
abd63a32 | 1114 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 1115 | { |
7be1c489 AM |
1116 | /* The MRI assembler uses pseudo-ops without |
1117 | a period. */ | |
32e4c1c2 | 1118 | pop = po_entry_find (po_hash, s); |
252b5132 RH |
1119 | if (pop != NULL && pop->poc_handler == NULL) |
1120 | pop = NULL; | |
1121 | } | |
1122 | ||
1123 | if (pop != NULL | |
041ff4dd | 1124 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 1125 | { |
041ff4dd | 1126 | /* PSEUDO - OP. |
f0e652b4 | 1127 | |
d02603dc | 1128 | WARNING: next_char may be end-of-line. |
d6415f6c AM |
1129 | We lookup the pseudo-op table with s+1 because we |
1130 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
1131 | |
1132 | if (pop == NULL) | |
32e4c1c2 | 1133 | pop = po_entry_find (po_hash, s + 1); |
e4475e39 NS |
1134 | if (pop && !pop->poc_handler) |
1135 | pop = NULL; | |
252b5132 RH |
1136 | |
1137 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
1138 | automatic alignment directive. What a hack |
1139 | this is. */ | |
252b5132 RH |
1140 | if (mri_pending_align |
1141 | && (pop == NULL | |
041ff4dd NC |
1142 | || !((pop->poc_handler == cons |
1143 | && pop->poc_val == 1) | |
1144 | || (pop->poc_handler == s_space | |
1145 | && pop->poc_val == 1) | |
252b5132 | 1146 | #ifdef tc_conditional_pseudoop |
041ff4dd | 1147 | || tc_conditional_pseudoop (pop) |
252b5132 | 1148 | #endif |
041ff4dd NC |
1149 | || pop->poc_handler == s_if |
1150 | || pop->poc_handler == s_ifdef | |
1151 | || pop->poc_handler == s_ifc | |
1152 | || pop->poc_handler == s_ifeqs | |
1153 | || pop->poc_handler == s_else | |
1154 | || pop->poc_handler == s_endif | |
1155 | || pop->poc_handler == s_globl | |
1156 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
1157 | { |
1158 | do_align (1, (char *) NULL, 0, 0); | |
1159 | mri_pending_align = 0; | |
f0e652b4 | 1160 | |
252b5132 RH |
1161 | if (line_label != NULL) |
1162 | { | |
2b47531b | 1163 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1164 | S_SET_VALUE (line_label, frag_now_fix ()); |
1165 | } | |
1166 | } | |
1167 | ||
041ff4dd | 1168 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
1169 | if (pop == NULL) |
1170 | { | |
5e75c3ab JB |
1171 | char *end = input_line_pointer; |
1172 | ||
d02603dc | 1173 | (void) restore_line_pointer (nul_char); |
252b5132 | 1174 | s_ignore (0); |
d02603dc | 1175 | nul_char = next_char = *--input_line_pointer; |
5e75c3ab | 1176 | *input_line_pointer = '\0'; |
d02603dc | 1177 | if (! macro_defined || ! try_macro (next_char, s)) |
5e75c3ab JB |
1178 | { |
1179 | *end = '\0'; | |
1180 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
d02603dc | 1181 | *input_line_pointer++ = nul_char; |
5e75c3ab | 1182 | } |
252b5132 RH |
1183 | continue; |
1184 | } | |
1185 | ||
041ff4dd | 1186 | /* Put it back for error messages etc. */ |
d02603dc | 1187 | next_char = restore_line_pointer (nul_char); |
252b5132 RH |
1188 | /* The following skip of whitespace is compulsory. |
1189 | A well shaped space is sometimes all that separates | |
041ff4dd | 1190 | keyword from operands. */ |
d02603dc | 1191 | if (next_char == ' ' || next_char == '\t') |
252b5132 | 1192 | input_line_pointer++; |
041ff4dd NC |
1193 | |
1194 | /* Input_line is restored. | |
d6415f6c AM |
1195 | Input_line_pointer->1st non-blank char |
1196 | after pseudo-operation. */ | |
252b5132 RH |
1197 | (*pop->poc_handler) (pop->poc_val); |
1198 | ||
1199 | /* If that was .end, just get out now. */ | |
1200 | if (pop->poc_handler == s_end) | |
1201 | goto quit; | |
1202 | } | |
1203 | else | |
1204 | { | |
d02603dc NC |
1205 | /* WARNING: next_char may be end-of-line. */ |
1206 | /* Also: input_line_pointer->`\0` where nul_char was. */ | |
1207 | (void) restore_line_pointer (nul_char); | |
7592cfd7 | 1208 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
d02603dc | 1209 | next_char = nul_char = *input_line_pointer; |
252b5132 RH |
1210 | *input_line_pointer = '\0'; |
1211 | ||
1212 | generate_lineno_debug (); | |
1213 | ||
d02603dc | 1214 | if (macro_defined && try_macro (next_char, s)) |
5e75c3ab | 1215 | continue; |
252b5132 RH |
1216 | |
1217 | if (mri_pending_align) | |
1218 | { | |
1219 | do_align (1, (char *) NULL, 0, 0); | |
1220 | mri_pending_align = 0; | |
1221 | if (line_label != NULL) | |
1222 | { | |
2b47531b | 1223 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1224 | S_SET_VALUE (line_label, frag_now_fix ()); |
1225 | } | |
1226 | } | |
1227 | ||
fa94de6b | 1228 | assemble_one (s); /* Assemble 1 instruction. */ |
252b5132 | 1229 | |
3be64886 NC |
1230 | /* PR 19630: The backend may have set ilp to NULL |
1231 | if it encountered a catastrophic failure. */ | |
1232 | if (input_line_pointer == NULL) | |
1233 | as_fatal (_("unable to continue with assembly.")); | |
1234 | ||
d02603dc | 1235 | *input_line_pointer++ = nul_char; |
252b5132 RH |
1236 | |
1237 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
1238 | this instruction. */ |
1239 | } | |
1240 | } | |
252b5132 | 1241 | continue; |
041ff4dd | 1242 | } |
252b5132 RH |
1243 | |
1244 | /* Empty statement? */ | |
d02603dc | 1245 | if (is_end_of_line[(unsigned char) next_char]) |
252b5132 RH |
1246 | continue; |
1247 | ||
d02603dc | 1248 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (next_char)) |
252b5132 | 1249 | { |
041ff4dd | 1250 | /* local label ("4:") */ |
252b5132 RH |
1251 | char *backup = input_line_pointer; |
1252 | ||
e74211b6 | 1253 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1254 | |
d02603dc NC |
1255 | temp = next_char - '0'; |
1256 | ||
1257 | if (nul_char == '"') | |
1258 | ++ input_line_pointer; | |
252b5132 | 1259 | |
041ff4dd | 1260 | /* Read the whole number. */ |
3882b010 | 1261 | while (ISDIGIT (*input_line_pointer)) |
252b5132 | 1262 | { |
d27aad4e AC |
1263 | const long digit = *input_line_pointer - '0'; |
1264 | if (temp > (LONG_MAX - digit) / 10) | |
1265 | { | |
1266 | as_bad (_("local label too large near %s"), backup); | |
1267 | temp = -1; | |
1268 | break; | |
1269 | } | |
1270 | temp = temp * 10 + digit; | |
252b5132 | 1271 | ++input_line_pointer; |
041ff4dd | 1272 | } |
252b5132 | 1273 | |
d27aad4e AC |
1274 | /* Overflow: stop processing the label. */ |
1275 | if (temp == -1) | |
7bb178ec L |
1276 | { |
1277 | ignore_rest_of_line (); | |
1278 | continue; | |
1279 | } | |
d27aad4e | 1280 | |
252b5132 RH |
1281 | if (LOCAL_LABELS_DOLLAR |
1282 | && *input_line_pointer == '$' | |
1283 | && *(input_line_pointer + 1) == ':') | |
1284 | { | |
1285 | input_line_pointer += 2; | |
1286 | ||
1287 | if (dollar_label_defined (temp)) | |
1288 | { | |
d27aad4e | 1289 | as_fatal (_("label \"%ld$\" redefined"), temp); |
252b5132 RH |
1290 | } |
1291 | ||
1292 | define_dollar_label (temp); | |
1293 | colon (dollar_label_name (temp, 0)); | |
1294 | continue; | |
1295 | } | |
1296 | ||
1297 | if (LOCAL_LABELS_FB | |
1298 | && *input_line_pointer++ == ':') | |
1299 | { | |
1300 | fb_label_instance_inc (temp); | |
1301 | colon (fb_label_name (temp, 0)); | |
1302 | continue; | |
1303 | } | |
1304 | ||
1305 | input_line_pointer = backup; | |
d02603dc | 1306 | } |
252b5132 | 1307 | |
d02603dc | 1308 | if (next_char && strchr (line_comment_chars, next_char)) |
041ff4dd | 1309 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1310 | sb sbuf; |
252b5132 RH |
1311 | char *ends; |
1312 | char *new_buf; | |
1313 | char *new_tmp; | |
1314 | unsigned int new_length; | |
1315 | char *tmp_buf = 0; | |
1316 | ||
252b5132 RH |
1317 | s = input_line_pointer; |
1318 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1319 | { |
1320 | /* We ignore it. */ | |
1321 | ignore_rest_of_line (); | |
1322 | continue; | |
1323 | } | |
1324 | bump_line_counters (); | |
252b5132 RH |
1325 | s += 4; |
1326 | ||
1327 | ends = strstr (s, "#NO_APP\n"); | |
1328 | ||
1329 | if (!ends) | |
1330 | { | |
1331 | unsigned int tmp_len; | |
1332 | unsigned int num; | |
1333 | ||
1334 | /* The end of the #APP wasn't in this buffer. We | |
1335 | keep reading in buffers until we find the #NO_APP | |
1336 | that goes with this #APP There is one. The specs | |
47eebc20 | 1337 | guarantee it... */ |
252b5132 | 1338 | tmp_len = buffer_limit - s; |
8860a416 | 1339 | tmp_buf = XNEWVEC (char, tmp_len + 1); |
252b5132 RH |
1340 | memcpy (tmp_buf, s, tmp_len); |
1341 | do | |
1342 | { | |
1343 | new_tmp = input_scrub_next_buffer (&buffer); | |
1344 | if (!new_tmp) | |
1345 | break; | |
1346 | else | |
1347 | buffer_limit = new_tmp; | |
1348 | input_line_pointer = buffer; | |
1349 | ends = strstr (buffer, "#NO_APP\n"); | |
1350 | if (ends) | |
1351 | num = ends - buffer; | |
1352 | else | |
1353 | num = buffer_limit - buffer; | |
1354 | ||
8860a416 | 1355 | tmp_buf = XRESIZEVEC (char, tmp_buf, tmp_len + num); |
252b5132 RH |
1356 | memcpy (tmp_buf + tmp_len, buffer, num); |
1357 | tmp_len += num; | |
1358 | } | |
1359 | while (!ends); | |
1360 | ||
1361 | input_line_pointer = ends ? ends + 8 : NULL; | |
1362 | ||
1363 | s = tmp_buf; | |
1364 | ends = s + tmp_len; | |
1365 | ||
1366 | } | |
1367 | else | |
1368 | { | |
1369 | input_line_pointer = ends + 8; | |
1370 | } | |
1371 | ||
1372 | scrub_string = s; | |
1373 | scrub_string_end = ends; | |
1374 | ||
1375 | new_length = ends - s; | |
8860a416 | 1376 | new_buf = XNEWVEC (char, new_length); |
252b5132 RH |
1377 | new_tmp = new_buf; |
1378 | for (;;) | |
1379 | { | |
39a45edc AM |
1380 | size_t space; |
1381 | size_t size; | |
252b5132 RH |
1382 | |
1383 | space = (new_buf + new_length) - new_tmp; | |
1384 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1385 | ||
1386 | if (size < space) | |
1387 | { | |
64e55042 | 1388 | new_tmp[size] = 0; |
252b5132 RH |
1389 | break; |
1390 | } | |
1391 | ||
8860a416 | 1392 | new_buf = XRESIZEVEC (char, new_buf, new_length + 100); |
252b5132 RH |
1393 | new_tmp = new_buf + new_length; |
1394 | new_length += 100; | |
1395 | } | |
1396 | ||
9fbb53c7 | 1397 | free (tmp_buf); |
f0e652b4 | 1398 | |
64e55042 HPN |
1399 | /* We've "scrubbed" input to the preferred format. In the |
1400 | process we may have consumed the whole of the remaining | |
1401 | file (and included files). We handle this formatted | |
1402 | input similar to that of macro expansion, letting | |
1403 | actual macro expansion (possibly nested) and other | |
1404 | input expansion work. Beware that in messages, line | |
1405 | numbers and possibly file names will be incorrect. */ | |
d2ae702c L |
1406 | new_length = strlen (new_buf); |
1407 | sb_build (&sbuf, new_length); | |
1408 | sb_add_buffer (&sbuf, new_buf, new_length); | |
64e55042 HPN |
1409 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); |
1410 | sb_kill (&sbuf); | |
1411 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1412 | free (new_buf); | |
252b5132 RH |
1413 | continue; |
1414 | } | |
1415 | ||
e74211b6 | 1416 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 RH |
1417 | |
1418 | #ifdef tc_unrecognized_line | |
d02603dc | 1419 | if (tc_unrecognized_line (next_char)) |
252b5132 RH |
1420 | continue; |
1421 | #endif | |
0e389e77 | 1422 | input_line_pointer--; |
601e61cd | 1423 | /* Report unknown char as error. */ |
c95b35a9 | 1424 | demand_empty_rest_of_line (); |
041ff4dd | 1425 | } |
041ff4dd | 1426 | } |
252b5132 RH |
1427 | |
1428 | quit: | |
04648e65 | 1429 | symbol_set_value_now (&dot_symbol); |
252b5132 | 1430 | |
fa94de6b RM |
1431 | #ifdef HANDLE_BUNDLE |
1432 | if (bundle_lock_frag != NULL) | |
1433 | { | |
1434 | as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line, | |
1435 | _(".bundle_lock with no matching .bundle_unlock")); | |
1436 | bundle_lock_frag = NULL; | |
1437 | bundle_lock_frchain = NULL; | |
d416e51d | 1438 | bundle_lock_depth = 0; |
fa94de6b RM |
1439 | } |
1440 | #endif | |
1441 | ||
252b5132 | 1442 | #ifdef md_cleanup |
041ff4dd | 1443 | md_cleanup (); |
252b5132 | 1444 | #endif |
041ff4dd NC |
1445 | /* Close the input file. */ |
1446 | input_scrub_close (); | |
4c400d5e AM |
1447 | #ifdef WARN_COMMENTS |
1448 | { | |
1449 | if (warn_comment && found_comment) | |
1450 | as_warn_where (found_comment_file, found_comment, | |
1451 | "first comment found here"); | |
1452 | } | |
1453 | #endif | |
252b5132 RH |
1454 | } |
1455 | ||
e5604d79 | 1456 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
956a6ba3 | 1457 | Take the sign of the number from SIGN rather than X_add_number. */ |
e5604d79 RS |
1458 | |
1459 | static void | |
956a6ba3 | 1460 | convert_to_bignum (expressionS *exp, int sign) |
e5604d79 RS |
1461 | { |
1462 | valueT value; | |
1463 | unsigned int i; | |
1464 | ||
1465 | value = exp->X_add_number; | |
1466 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1467 | { | |
1468 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1469 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1470 | } | |
1471 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1472 | the sign of the original value. */ | |
956a6ba3 JB |
1473 | if ((exp->X_add_number < 0) == !sign) |
1474 | generic_bignum[i++] = sign ? LITTLENUM_MASK : 0; | |
e5604d79 RS |
1475 | exp->X_op = O_big; |
1476 | exp->X_add_number = i; | |
1477 | } | |
1478 | ||
252b5132 RH |
1479 | /* For most MRI pseudo-ops, the line actually ends at the first |
1480 | nonquoted space. This function looks for that point, stuffs a null | |
1481 | in, and sets *STOPCP to the character that used to be there, and | |
1482 | returns the location. | |
1483 | ||
1484 | Until I hear otherwise, I am going to assume that this is only true | |
1485 | for the m68k MRI assembler. */ | |
1486 | ||
1487 | char * | |
39e6acbd | 1488 | mri_comment_field (char *stopcp) |
252b5132 | 1489 | { |
252b5132 | 1490 | char *s; |
041ff4dd | 1491 | #ifdef TC_M68K |
252b5132 RH |
1492 | int inquote = 0; |
1493 | ||
1494 | know (flag_m68k_mri); | |
1495 | ||
1496 | for (s = input_line_pointer; | |
041ff4dd | 1497 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1498 | || inquote); |
1499 | s++) | |
1500 | { | |
1501 | if (*s == '\'') | |
041ff4dd | 1502 | inquote = !inquote; |
252b5132 | 1503 | } |
252b5132 | 1504 | #else |
041ff4dd NC |
1505 | for (s = input_line_pointer; |
1506 | !is_end_of_line[(unsigned char) *s]; | |
1507 | s++) | |
252b5132 | 1508 | ; |
041ff4dd | 1509 | #endif |
252b5132 RH |
1510 | *stopcp = *s; |
1511 | *s = '\0'; | |
f0e652b4 | 1512 | |
252b5132 | 1513 | return s; |
252b5132 RH |
1514 | } |
1515 | ||
1516 | /* Skip to the end of an MRI comment field. */ | |
1517 | ||
1518 | void | |
39e6acbd | 1519 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1520 | { |
1521 | know (flag_mri); | |
1522 | ||
1523 | input_line_pointer = stop; | |
1524 | *stop = stopc; | |
041ff4dd | 1525 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1526 | ++input_line_pointer; |
1527 | } | |
1528 | ||
041ff4dd | 1529 | void |
39e6acbd | 1530 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1531 | { |
1532 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1533 | } | |
1534 | ||
252b5132 RH |
1535 | /* Handle the .align pseudo-op. A positive ARG is a default alignment |
1536 | (in bytes). A negative ARG is the negative of the length of the | |
1537 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1538 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1539 | #ifndef TC_ALIGN_LIMIT |
1540 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1541 | #endif | |
9ebd302d | 1542 | |
252b5132 | 1543 | static void |
9136aa49 | 1544 | s_align (signed int arg, int bytes_p) |
252b5132 | 1545 | { |
11ec4ba9 | 1546 | unsigned int align_limit = TC_ALIGN_LIMIT; |
9ebd302d | 1547 | unsigned int align; |
252b5132 | 1548 | char *stop = NULL; |
fb25138b | 1549 | char stopc = 0; |
252b5132 | 1550 | offsetT fill = 0; |
9136aa49 | 1551 | unsigned int max; |
252b5132 RH |
1552 | int fill_p; |
1553 | ||
1554 | if (flag_mri) | |
1555 | stop = mri_comment_field (&stopc); | |
1556 | ||
1557 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1558 | { | |
1559 | if (arg < 0) | |
1560 | align = 0; | |
1561 | else | |
041ff4dd | 1562 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1563 | } |
1564 | else | |
1565 | { | |
1566 | align = get_absolute_expression (); | |
1567 | SKIP_WHITESPACE (); | |
db2ed2e0 AM |
1568 | |
1569 | #ifdef TC_ALIGN_ZERO_IS_DEFAULT | |
1570 | if (arg > 0 && align == 0) | |
1571 | align = arg; | |
1572 | #endif | |
252b5132 RH |
1573 | } |
1574 | ||
1575 | if (bytes_p) | |
1576 | { | |
1577 | /* Convert to a power of 2. */ | |
1578 | if (align != 0) | |
1579 | { | |
1580 | unsigned int i; | |
1581 | ||
1582 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1583 | ; | |
1584 | if (align != 1) | |
0e389e77 | 1585 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1586 | |
252b5132 RH |
1587 | align = i; |
1588 | } | |
1589 | } | |
1590 | ||
b617dc20 | 1591 | if (align > align_limit) |
252b5132 | 1592 | { |
b617dc20 | 1593 | align = align_limit; |
0e389e77 | 1594 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1595 | } |
1596 | ||
1597 | if (*input_line_pointer != ',') | |
1598 | { | |
1599 | fill_p = 0; | |
1600 | max = 0; | |
1601 | } | |
1602 | else | |
1603 | { | |
1604 | ++input_line_pointer; | |
1605 | if (*input_line_pointer == ',') | |
1606 | fill_p = 0; | |
1607 | else | |
1608 | { | |
1609 | fill = get_absolute_expression (); | |
1610 | SKIP_WHITESPACE (); | |
1611 | fill_p = 1; | |
1612 | } | |
1613 | ||
1614 | if (*input_line_pointer != ',') | |
1615 | max = 0; | |
1616 | else | |
1617 | { | |
1618 | ++input_line_pointer; | |
1619 | max = get_absolute_expression (); | |
1620 | } | |
1621 | } | |
1622 | ||
041ff4dd | 1623 | if (!fill_p) |
252b5132 RH |
1624 | { |
1625 | if (arg < 0) | |
1626 | as_warn (_("expected fill pattern missing")); | |
1627 | do_align (align, (char *) NULL, 0, max); | |
1628 | } | |
1629 | else | |
1630 | { | |
9136aa49 | 1631 | unsigned int fill_len; |
252b5132 RH |
1632 | |
1633 | if (arg >= 0) | |
1634 | fill_len = 1; | |
1635 | else | |
041ff4dd | 1636 | fill_len = -arg; |
9136aa49 | 1637 | |
252b5132 RH |
1638 | if (fill_len <= 1) |
1639 | { | |
9136aa49 | 1640 | char fill_char = 0; |
252b5132 RH |
1641 | |
1642 | fill_char = fill; | |
1643 | do_align (align, &fill_char, fill_len, max); | |
1644 | } | |
1645 | else | |
1646 | { | |
1647 | char ab[16]; | |
1648 | ||
1649 | if ((size_t) fill_len > sizeof ab) | |
9136aa49 DG |
1650 | { |
1651 | as_warn (_("fill pattern too long, truncating to %u"), | |
1652 | (unsigned) sizeof ab); | |
1653 | fill_len = sizeof ab; | |
1654 | } | |
1655 | ||
252b5132 RH |
1656 | md_number_to_chars (ab, fill, fill_len); |
1657 | do_align (align, ab, fill_len, max); | |
1658 | } | |
1659 | } | |
1660 | ||
1661 | demand_empty_rest_of_line (); | |
1662 | ||
1663 | if (flag_mri) | |
1664 | mri_comment_end (stop, stopc); | |
1665 | } | |
1666 | ||
1667 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1668 | align to a 4 byte boundary. */ | |
1669 | ||
041ff4dd | 1670 | void |
39e6acbd | 1671 | s_align_bytes (int arg) |
252b5132 RH |
1672 | { |
1673 | s_align (arg, 1); | |
1674 | } | |
1675 | ||
1676 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1677 | to a 2**4 boundary. */ | |
1678 | ||
041ff4dd | 1679 | void |
39e6acbd | 1680 | s_align_ptwo (int arg) |
252b5132 RH |
1681 | { |
1682 | s_align (arg, 0); | |
1683 | } | |
1684 | ||
caa32fe5 NC |
1685 | /* Switch in and out of alternate macro mode. */ |
1686 | ||
b38ead21 | 1687 | static void |
caa32fe5 NC |
1688 | s_altmacro (int on) |
1689 | { | |
1690 | demand_empty_rest_of_line (); | |
1691 | macro_set_alternate (on); | |
1692 | } | |
1693 | ||
7bfd842d NC |
1694 | /* Read a symbol name from input_line_pointer. |
1695 | ||
1696 | Stores the symbol name in a buffer and returns a pointer to this buffer. | |
1697 | The buffer is xalloc'ed. It is the caller's responsibility to free | |
1698 | this buffer. | |
1699 | ||
1700 | The name is not left in the i_l_p buffer as it may need processing | |
1701 | to handle escape characters. | |
1702 | ||
1703 | Advances i_l_p to the next non-whitespace character. | |
1704 | ||
1705 | If a symbol name could not be read, the routine issues an error | |
1706 | messages, skips to the end of the line and returns NULL. */ | |
1707 | ||
69602580 | 1708 | char * |
7bfd842d NC |
1709 | read_symbol_name (void) |
1710 | { | |
1711 | char * name; | |
1712 | char * start; | |
1713 | char c; | |
1714 | ||
1715 | c = *input_line_pointer++; | |
1716 | ||
1717 | if (c == '"') | |
1718 | { | |
1719 | #define SYM_NAME_CHUNK_LEN 128 | |
1720 | ptrdiff_t len = SYM_NAME_CHUNK_LEN; | |
1721 | char * name_end; | |
1722 | unsigned int C; | |
1723 | ||
8860a416 | 1724 | start = name = XNEWVEC (char, len + 1); |
7bfd842d NC |
1725 | |
1726 | name_end = name + SYM_NAME_CHUNK_LEN; | |
1727 | ||
1728 | while (is_a_char (C = next_char_of_string ())) | |
1729 | { | |
1730 | if (name >= name_end) | |
1731 | { | |
1732 | ptrdiff_t sofar; | |
1733 | ||
1734 | sofar = name - start; | |
1735 | len += SYM_NAME_CHUNK_LEN; | |
8860a416 | 1736 | start = XRESIZEVEC (char, start, len + 1); |
7bfd842d NC |
1737 | name_end = start + len; |
1738 | name = start + sofar; | |
1739 | } | |
34bca508 | 1740 | |
7bfd842d NC |
1741 | *name++ = (char) C; |
1742 | } | |
1743 | *name = 0; | |
1744 | ||
1745 | /* Since quoted symbol names can contain non-ASCII characters, | |
1746 | check the string and warn if it cannot be recognised by the | |
1747 | current character set. */ | |
1748 | if (mbstowcs (NULL, name, len) == (size_t) -1) | |
1749 | as_warn (_("symbol name not recognised in the current locale")); | |
1750 | } | |
2469b3c5 | 1751 | else if (is_name_beginner (c) || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1752 | { |
1753 | ptrdiff_t len; | |
1754 | ||
1755 | name = input_line_pointer - 1; | |
1756 | ||
2469b3c5 | 1757 | /* We accept FAKE_LABEL_CHAR in a name in case this is |
7bfd842d NC |
1758 | being called with a constructed string. */ |
1759 | while (is_part_of_name (c = *input_line_pointer++) | |
2469b3c5 | 1760 | || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1761 | ; |
1762 | ||
1763 | len = (input_line_pointer - name) - 1; | |
8860a416 | 1764 | start = XNEWVEC (char, len + 1); |
7bfd842d NC |
1765 | |
1766 | memcpy (start, name, len); | |
1767 | start[len] = 0; | |
1768 | ||
1769 | /* Skip a name ender char if one is present. */ | |
1770 | if (! is_name_ender (c)) | |
1771 | --input_line_pointer; | |
1772 | } | |
1773 | else | |
1774 | name = start = NULL; | |
1775 | ||
1776 | if (name == start) | |
1777 | { | |
1778 | as_bad (_("expected symbol name")); | |
1779 | ignore_rest_of_line (); | |
1780 | return NULL; | |
1781 | } | |
34bca508 | 1782 | |
7bfd842d NC |
1783 | SKIP_WHITESPACE (); |
1784 | ||
1785 | return start; | |
1786 | } | |
1787 | ||
1788 | ||
e13bab5a AM |
1789 | symbolS * |
1790 | s_comm_internal (int param, | |
1791 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1792 | { |
e13bab5a | 1793 | char *name; |
e13bab5a AM |
1794 | offsetT temp, size; |
1795 | symbolS *symbolP = NULL; | |
252b5132 | 1796 | char *stop = NULL; |
fb25138b | 1797 | char stopc = 0; |
e13bab5a | 1798 | expressionS exp; |
252b5132 RH |
1799 | |
1800 | if (flag_mri) | |
1801 | stop = mri_comment_field (&stopc); | |
1802 | ||
7bfd842d NC |
1803 | if ((name = read_symbol_name ()) == NULL) |
1804 | goto out; | |
f0e652b4 | 1805 | |
e13bab5a AM |
1806 | /* Accept an optional comma after the name. The comma used to be |
1807 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1808 | if (*input_line_pointer == ',') | |
1809 | input_line_pointer++; | |
1810 | ||
e13bab5a AM |
1811 | temp = get_absolute_expr (&exp); |
1812 | size = temp; | |
65879393 | 1813 | size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1814 | if (exp.X_op == O_absent) |
252b5132 | 1815 | { |
e13bab5a | 1816 | as_bad (_("missing size expression")); |
252b5132 | 1817 | ignore_rest_of_line (); |
e13bab5a | 1818 | goto out; |
252b5132 | 1819 | } |
e13bab5a | 1820 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1821 | { |
e13bab5a | 1822 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1823 | ignore_rest_of_line (); |
e13bab5a | 1824 | goto out; |
252b5132 | 1825 | } |
f0e652b4 | 1826 | |
252b5132 | 1827 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1828 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1829 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1830 | { |
92757bc9 JB |
1831 | if (!S_IS_VOLATILE (symbolP)) |
1832 | { | |
1833 | symbolP = NULL; | |
1834 | as_bad (_("symbol `%s' is already defined"), name); | |
92757bc9 JB |
1835 | ignore_rest_of_line (); |
1836 | goto out; | |
1837 | } | |
89cdfe57 | 1838 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1839 | S_SET_SEGMENT (symbolP, undefined_section); |
1840 | S_SET_VALUE (symbolP, 0); | |
1841 | symbol_set_frag (symbolP, &zero_address_frag); | |
1842 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1843 | } |
f0e652b4 | 1844 | |
e13bab5a AM |
1845 | size = S_GET_VALUE (symbolP); |
1846 | if (size == 0) | |
1847 | size = temp; | |
1848 | else if (size != temp) | |
1849 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1850 | name, (long) size, (long) temp); | |
1851 | ||
e13bab5a AM |
1852 | if (comm_parse_extra != NULL) |
1853 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1854 | else |
1855 | { | |
e13bab5a | 1856 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1857 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1858 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
e13bab5a | 1859 | } |
252b5132 RH |
1860 | |
1861 | demand_empty_rest_of_line (); | |
e13bab5a | 1862 | out: |
252b5132 RH |
1863 | if (flag_mri) |
1864 | mri_comment_end (stop, stopc); | |
9fbb53c7 | 1865 | free (name); |
e13bab5a AM |
1866 | return symbolP; |
1867 | } | |
1868 | ||
1869 | void | |
1870 | s_comm (int ignore) | |
1871 | { | |
1872 | s_comm_internal (ignore, NULL); | |
1873 | } | |
252b5132 RH |
1874 | |
1875 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1876 | symbol with the appropriate name. We make s_space do the right | |
1877 | thing by increasing the size. */ | |
1878 | ||
1879 | void | |
39e6acbd | 1880 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1881 | { |
1882 | char *name; | |
1883 | char c; | |
1884 | char *alc = NULL; | |
1885 | symbolS *sym; | |
1886 | offsetT align; | |
1887 | char *stop = NULL; | |
fb25138b | 1888 | char stopc = 0; |
252b5132 | 1889 | |
041ff4dd | 1890 | if (!flag_mri) |
252b5132 RH |
1891 | { |
1892 | s_comm (0); | |
1893 | return; | |
1894 | } | |
1895 | ||
1896 | stop = mri_comment_field (&stopc); | |
1897 | ||
1898 | SKIP_WHITESPACE (); | |
1899 | ||
1900 | name = input_line_pointer; | |
3882b010 | 1901 | if (!ISDIGIT (*name)) |
d02603dc | 1902 | c = get_symbol_name (& name); |
252b5132 RH |
1903 | else |
1904 | { | |
1905 | do | |
1906 | { | |
1907 | ++input_line_pointer; | |
1908 | } | |
3882b010 | 1909 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1910 | |
252b5132 RH |
1911 | c = *input_line_pointer; |
1912 | *input_line_pointer = '\0'; | |
1913 | ||
1914 | if (line_label != NULL) | |
1915 | { | |
8860a416 TS |
1916 | alc = XNEWVEC (char, strlen (S_GET_NAME (line_label)) |
1917 | + (input_line_pointer - name) + 1); | |
252b5132 RH |
1918 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); |
1919 | name = alc; | |
1920 | } | |
1921 | } | |
1922 | ||
1923 | sym = symbol_find_or_make (name); | |
d02603dc | 1924 | c = restore_line_pointer (c); |
9fbb53c7 | 1925 | free (alc); |
252b5132 RH |
1926 | |
1927 | if (*input_line_pointer != ',') | |
1928 | align = 0; | |
1929 | else | |
1930 | { | |
1931 | ++input_line_pointer; | |
1932 | align = get_absolute_expression (); | |
1933 | } | |
1934 | ||
041ff4dd | 1935 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1936 | { |
0e389e77 | 1937 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1938 | ignore_rest_of_line (); |
1939 | mri_comment_end (stop, stopc); | |
1940 | return; | |
1941 | } | |
1942 | ||
1943 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1944 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1945 | mri_common_symbol = sym; |
1946 | ||
1947 | #ifdef S_SET_ALIGN | |
1948 | if (align != 0) | |
1949 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1950 | #else |
1951 | (void) align; | |
252b5132 RH |
1952 | #endif |
1953 | ||
1954 | if (line_label != NULL) | |
1955 | { | |
2b47531b ILT |
1956 | expressionS exp; |
1957 | exp.X_op = O_symbol; | |
1958 | exp.X_add_symbol = sym; | |
1959 | exp.X_add_number = 0; | |
1960 | symbol_set_value_expression (line_label, &exp); | |
1961 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1962 | S_SET_SEGMENT (line_label, expr_section); |
1963 | } | |
1964 | ||
1965 | /* FIXME: We just ignore the small argument, which distinguishes | |
1966 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1967 | ||
1968 | /* Ignore the type and hptype. */ | |
1969 | if (*input_line_pointer == ',') | |
1970 | input_line_pointer += 2; | |
1971 | if (*input_line_pointer == ',') | |
1972 | input_line_pointer += 2; | |
1973 | ||
1974 | demand_empty_rest_of_line (); | |
1975 | ||
1976 | mri_comment_end (stop, stopc); | |
1977 | } | |
1978 | ||
1979 | void | |
39e6acbd | 1980 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1981 | { |
1982 | segT section; | |
3d540e93 | 1983 | int temp; |
252b5132 RH |
1984 | |
1985 | temp = get_absolute_expression (); | |
1986 | if (flag_readonly_data_in_text) | |
1987 | { | |
1988 | section = text_section; | |
1989 | temp += 1000; | |
1990 | } | |
1991 | else | |
1992 | section = data_section; | |
1993 | ||
1994 | subseg_set (section, (subsegT) temp); | |
1995 | ||
252b5132 RH |
1996 | demand_empty_rest_of_line (); |
1997 | } | |
1998 | ||
1999 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
2000 | do_scrub_chars when a preprocessor # line comment is seen with a | |
2001 | file name. This default definition may be overridden by the object | |
2002 | or CPU specific pseudo-ops. This function is also the default | |
2003 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
2004 | .file. */ | |
2005 | ||
ecb4347a | 2006 | void |
f17c130b | 2007 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
2008 | { |
2009 | #ifdef LISTING | |
2010 | if (listing) | |
2011 | listing_source_file (file); | |
2012 | #endif | |
2013 | register_dependency (file); | |
2014 | #ifdef obj_app_file | |
c04f5787 | 2015 | obj_app_file (file, appfile); |
ecb4347a DJ |
2016 | #endif |
2017 | } | |
2018 | ||
041ff4dd | 2019 | void |
39e6acbd | 2020 | s_app_file (int appfile) |
252b5132 | 2021 | { |
3d540e93 | 2022 | char *s; |
252b5132 RH |
2023 | int length; |
2024 | ||
041ff4dd | 2025 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
2026 | if ((s = demand_copy_string (&length)) != 0) |
2027 | { | |
252b5132 | 2028 | int may_omit |
93e914b2 | 2029 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
2030 | |
2031 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 2032 | backquote. */ |
252b5132 RH |
2033 | if (flag_m68k_mri |
2034 | && *input_line_pointer == '\'' | |
2035 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
2036 | ++input_line_pointer; | |
2037 | ||
2038 | demand_empty_rest_of_line (); | |
041ff4dd | 2039 | if (!may_omit) |
c04f5787 | 2040 | s_app_file_string (s, appfile); |
252b5132 RH |
2041 | } |
2042 | } | |
2043 | ||
e9fc6c21 AO |
2044 | static int |
2045 | get_linefile_number (int *flag) | |
2046 | { | |
2047 | SKIP_WHITESPACE (); | |
2048 | ||
2049 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
2050 | return 0; | |
2051 | ||
2052 | *flag = get_absolute_expression (); | |
2053 | ||
2054 | return 1; | |
2055 | } | |
2056 | ||
252b5132 RH |
2057 | /* Handle the .appline pseudo-op. This is automatically generated by |
2058 | do_scrub_chars when a preprocessor # line comment is seen. This | |
2059 | default definition may be overridden by the object or CPU specific | |
2060 | pseudo-ops. */ | |
2061 | ||
2062 | void | |
93e914b2 | 2063 | s_app_line (int appline) |
252b5132 | 2064 | { |
e9fc6c21 | 2065 | char *file = NULL; |
252b5132 RH |
2066 | int l; |
2067 | ||
2068 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
2069 | if (appline) |
2070 | l = get_absolute_expression (); | |
2071 | else if (!get_linefile_number (&l)) | |
2072 | { | |
2073 | ignore_rest_of_line (); | |
2074 | return; | |
2075 | } | |
2076 | ||
2077 | l--; | |
47837f8e NC |
2078 | |
2079 | if (l < -1) | |
252b5132 | 2080 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
2081 | Besides, it's silly. GCC however will generate a line number of |
2082 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
2083 | ||
fa94de6b | 2084 | # 0 "<built-in>" |
47837f8e NC |
2085 | |
2086 | We do not want to barf on this, especially since such files are used | |
2087 | in the GCC and GDB testsuites. So we check for negative line numbers | |
2088 | rather than non-positive line numbers. */ | |
0e389e77 | 2089 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 2090 | l + 1); |
252b5132 RH |
2091 | else |
2092 | { | |
93e914b2 | 2093 | int flags = 0; |
93e914b2 AO |
2094 | int length = 0; |
2095 | ||
2096 | if (!appline) | |
2097 | { | |
e9fc6c21 AO |
2098 | SKIP_WHITESPACE (); |
2099 | ||
2100 | if (*input_line_pointer == '"') | |
2101 | file = demand_copy_string (&length); | |
93e914b2 AO |
2102 | |
2103 | if (file) | |
2104 | { | |
2105 | int this_flag; | |
2106 | ||
e9fc6c21 | 2107 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
2108 | switch (this_flag) |
2109 | { | |
2110 | /* From GCC's cpp documentation: | |
2111 | 1: start of a new file. | |
2112 | 2: returning to a file after having included | |
fa94de6b | 2113 | another file. |
93e914b2 AO |
2114 | 3: following text comes from a system header file. |
2115 | 4: following text should be treated as extern "C". | |
2116 | ||
2117 | 4 is nonsensical for the assembler; 3, we don't | |
2118 | care about, so we ignore it just in case a | |
2119 | system header file is included while | |
2120 | preprocessing assembly. So 1 and 2 are all we | |
2121 | care about, and they are mutually incompatible. | |
2122 | new_logical_line_flags() demands this. */ | |
2123 | case 1: | |
2124 | case 2: | |
2125 | if (flags && flags != (1 << this_flag)) | |
2126 | as_warn (_("incompatible flag %i in line directive"), | |
2127 | this_flag); | |
2128 | else | |
2129 | flags |= 1 << this_flag; | |
2130 | break; | |
2131 | ||
2132 | case 3: | |
2133 | case 4: | |
2134 | /* We ignore these. */ | |
2135 | break; | |
2136 | ||
2137 | default: | |
2138 | as_warn (_("unsupported flag %i in line directive"), | |
2139 | this_flag); | |
2140 | break; | |
2141 | } | |
e9fc6c21 AO |
2142 | |
2143 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
2144 | file = 0; | |
93e914b2 AO |
2145 | } |
2146 | } | |
2147 | ||
e9fc6c21 AO |
2148 | if (appline || file) |
2149 | { | |
2150 | new_logical_line_flags (file, l, flags); | |
252b5132 | 2151 | #ifdef LISTING |
e9fc6c21 AO |
2152 | if (listing) |
2153 | listing_source_line (l); | |
252b5132 | 2154 | #endif |
e9fc6c21 | 2155 | } |
252b5132 | 2156 | } |
e9fc6c21 AO |
2157 | if (appline || file) |
2158 | demand_empty_rest_of_line (); | |
2159 | else | |
2160 | ignore_rest_of_line (); | |
252b5132 RH |
2161 | } |
2162 | ||
2163 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
2164 | read_a_source_file. */ | |
2165 | ||
2166 | void | |
39e6acbd | 2167 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2168 | { |
2169 | if (flag_mri) | |
2170 | { | |
2171 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 2172 | but we don't support that. */ |
252b5132 | 2173 | SKIP_WHITESPACE (); |
041ff4dd | 2174 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2175 | && *input_line_pointer != '*' |
2176 | && *input_line_pointer != '!') | |
2177 | as_warn (_("start address not supported")); | |
2178 | } | |
2179 | } | |
2180 | ||
2181 | /* Handle the .err pseudo-op. */ | |
2182 | ||
2183 | void | |
39e6acbd | 2184 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2185 | { |
2186 | as_bad (_(".err encountered")); | |
2187 | demand_empty_rest_of_line (); | |
d190d046 HPN |
2188 | } |
2189 | ||
2190 | /* Handle the .error and .warning pseudo-ops. */ | |
2191 | ||
2192 | void | |
2193 | s_errwarn (int err) | |
2194 | { | |
2195 | int len; | |
2196 | /* The purpose for the conditional assignment is not to | |
2197 | internationalize the directive itself, but that we need a | |
2198 | self-contained message, one that can be passed like the | |
2199 | demand_copy_C_string return value, and with no assumption on the | |
2200 | location of the name of the directive within the message. */ | |
6d4af3c2 | 2201 | const char *msg |
d190d046 HPN |
2202 | = (err ? _(".error directive invoked in source file") |
2203 | : _(".warning directive invoked in source file")); | |
2204 | ||
2205 | if (!is_it_end_of_statement ()) | |
2206 | { | |
2207 | if (*input_line_pointer != '\"') | |
2208 | { | |
2209 | as_bad (_("%s argument must be a string"), | |
2210 | err ? ".error" : ".warning"); | |
40a4d956 | 2211 | ignore_rest_of_line (); |
d190d046 HPN |
2212 | return; |
2213 | } | |
2214 | ||
2215 | msg = demand_copy_C_string (&len); | |
2216 | if (msg == NULL) | |
2217 | return; | |
2218 | } | |
2219 | ||
2220 | if (err) | |
2221 | as_bad ("%s", msg); | |
2222 | else | |
2223 | as_warn ("%s", msg); | |
2224 | demand_empty_rest_of_line (); | |
252b5132 RH |
2225 | } |
2226 | ||
2227 | /* Handle the MRI fail pseudo-op. */ | |
2228 | ||
2229 | void | |
39e6acbd | 2230 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2231 | { |
2232 | offsetT temp; | |
2233 | char *stop = NULL; | |
fb25138b | 2234 | char stopc = 0; |
252b5132 RH |
2235 | |
2236 | if (flag_mri) | |
2237 | stop = mri_comment_field (&stopc); | |
2238 | ||
2239 | temp = get_absolute_expression (); | |
2240 | if (temp >= 500) | |
2241 | as_warn (_(".fail %ld encountered"), (long) temp); | |
2242 | else | |
2243 | as_bad (_(".fail %ld encountered"), (long) temp); | |
2244 | ||
2245 | demand_empty_rest_of_line (); | |
2246 | ||
2247 | if (flag_mri) | |
2248 | mri_comment_end (stop, stopc); | |
2249 | } | |
2250 | ||
041ff4dd | 2251 | void |
39e6acbd | 2252 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2253 | { |
2254 | expressionS rep_exp; | |
2255 | long size = 1; | |
3d540e93 | 2256 | long fill = 0; |
252b5132 RH |
2257 | char *p; |
2258 | ||
2259 | #ifdef md_flush_pending_output | |
2260 | md_flush_pending_output (); | |
2261 | #endif | |
2262 | ||
cc3f603a JM |
2263 | #ifdef md_cons_align |
2264 | md_cons_align (1); | |
2265 | #endif | |
2266 | ||
4f2358bc | 2267 | expression (&rep_exp); |
252b5132 RH |
2268 | if (*input_line_pointer == ',') |
2269 | { | |
2270 | input_line_pointer++; | |
2271 | size = get_absolute_expression (); | |
2272 | if (*input_line_pointer == ',') | |
2273 | { | |
2274 | input_line_pointer++; | |
2275 | fill = get_absolute_expression (); | |
2276 | } | |
2277 | } | |
2278 | ||
2279 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
2280 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
2281 | if (size > BSD_FILL_SIZE_CROCK_8) | |
2282 | { | |
0e389e77 | 2283 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
2284 | size = BSD_FILL_SIZE_CROCK_8; |
2285 | } | |
2286 | if (size < 0) | |
2287 | { | |
0e389e77 | 2288 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
2289 | size = 0; |
2290 | } | |
2291 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
2292 | { | |
2293 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 2294 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
2295 | size = 0; |
2296 | } | |
2297 | ||
2298 | if (size && !need_pass_2) | |
2299 | { | |
ec9ab52c JB |
2300 | if (now_seg == absolute_section) |
2301 | { | |
2302 | if (rep_exp.X_op != O_constant) | |
2303 | as_bad (_("non-constant fill count for absolute section")); | |
2304 | else if (fill && rep_exp.X_add_number != 0) | |
2305 | as_bad (_("attempt to fill absolute section with non-zero value")); | |
2306 | abs_section_offset += rep_exp.X_add_number * size; | |
2307 | } | |
2308 | else if (fill | |
2309 | && (rep_exp.X_op != O_constant || rep_exp.X_add_number != 0) | |
2310 | && in_bss ()) | |
2311 | as_bad (_("attempt to fill section `%s' with non-zero value"), | |
2312 | segment_name (now_seg)); | |
2313 | ||
252b5132 RH |
2314 | if (rep_exp.X_op == O_constant) |
2315 | { | |
2316 | p = frag_var (rs_fill, (int) size, (int) size, | |
2317 | (relax_substateT) 0, (symbolS *) 0, | |
2318 | (offsetT) rep_exp.X_add_number, | |
2319 | (char *) 0); | |
2320 | } | |
2321 | else | |
2322 | { | |
2323 | /* We don't have a constant repeat count, so we can't use | |
2324 | rs_fill. We can get the same results out of rs_space, | |
2325 | but its argument is in bytes, so we must multiply the | |
2326 | repeat count by size. */ | |
2327 | ||
2328 | symbolS *rep_sym; | |
2329 | rep_sym = make_expr_symbol (&rep_exp); | |
2330 | if (size != 1) | |
2331 | { | |
2332 | expressionS size_exp; | |
2333 | size_exp.X_op = O_constant; | |
2334 | size_exp.X_add_number = size; | |
2335 | ||
2336 | rep_exp.X_op = O_multiply; | |
2337 | rep_exp.X_add_symbol = rep_sym; | |
2338 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
2339 | rep_exp.X_add_number = 0; | |
2340 | rep_sym = make_expr_symbol (&rep_exp); | |
2341 | } | |
2342 | ||
2343 | p = frag_var (rs_space, (int) size, (int) size, | |
2344 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
2345 | } | |
f0e652b4 | 2346 | |
252b5132 | 2347 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2348 | |
252b5132 | 2349 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2350 | flavoured AS. The following bizarre behaviour is to be |
2351 | compatible with above. I guess they tried to take up to 8 | |
2352 | bytes from a 4-byte expression and they forgot to sign | |
2353 | extend. */ | |
252b5132 RH |
2354 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2355 | md_number_to_chars (p, (valueT) fill, | |
2356 | (size > BSD_FILL_SIZE_CROCK_4 | |
2357 | ? BSD_FILL_SIZE_CROCK_4 | |
2358 | : (int) size)); | |
2359 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2360 | but emits no error message because it seems a legal thing to do. |
2361 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2362 | compiler. */ |
252b5132 RH |
2363 | } |
2364 | demand_empty_rest_of_line (); | |
2365 | } | |
2366 | ||
041ff4dd | 2367 | void |
39e6acbd | 2368 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2369 | { |
2370 | char *name; | |
2371 | int c; | |
2372 | symbolS *symbolP; | |
2373 | char *stop = NULL; | |
fb25138b | 2374 | char stopc = 0; |
252b5132 RH |
2375 | |
2376 | if (flag_mri) | |
2377 | stop = mri_comment_field (&stopc); | |
2378 | ||
2379 | do | |
2380 | { | |
7bfd842d NC |
2381 | if ((name = read_symbol_name ()) == NULL) |
2382 | return; | |
2383 | ||
252b5132 | 2384 | symbolP = symbol_find_or_make (name); |
58b5739a RH |
2385 | S_SET_EXTERNAL (symbolP); |
2386 | ||
252b5132 | 2387 | SKIP_WHITESPACE (); |
58b5739a | 2388 | c = *input_line_pointer; |
252b5132 RH |
2389 | if (c == ',') |
2390 | { | |
2391 | input_line_pointer++; | |
2392 | SKIP_WHITESPACE (); | |
0e389e77 | 2393 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2394 | c = '\n'; |
2395 | } | |
7bfd842d NC |
2396 | |
2397 | free (name); | |
252b5132 RH |
2398 | } |
2399 | while (c == ','); | |
2400 | ||
2401 | demand_empty_rest_of_line (); | |
2402 | ||
2403 | if (flag_mri) | |
2404 | mri_comment_end (stop, stopc); | |
2405 | } | |
2406 | ||
2407 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2408 | ||
2409 | void | |
39e6acbd | 2410 | s_irp (int irpc) |
252b5132 | 2411 | { |
3b4dbbbf TS |
2412 | char * eol; |
2413 | const char * file; | |
252b5132 RH |
2414 | unsigned int line; |
2415 | sb s; | |
2416 | const char *err; | |
2417 | sb out; | |
2418 | ||
3b4dbbbf | 2419 | file = as_where (&line); |
252b5132 | 2420 | |
40a4d956 | 2421 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2422 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2423 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2424 | input_line_pointer = eol; | |
252b5132 RH |
2425 | |
2426 | sb_new (&out); | |
2427 | ||
7592cfd7 | 2428 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2429 | if (err != NULL) |
2430 | as_bad_where (file, line, "%s", err); | |
2431 | ||
2432 | sb_kill (&s); | |
2433 | ||
9f10757c | 2434 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2435 | sb_kill (&out); |
2436 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2437 | } | |
2438 | ||
2439 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2440 | the section to only be linked once. However, this is not supported | |
2441 | by most object file formats. This takes an optional argument, | |
2442 | which is what to do about duplicates. */ | |
2443 | ||
2444 | void | |
39e6acbd | 2445 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2446 | { |
2447 | enum linkonce_type type; | |
2448 | ||
2449 | SKIP_WHITESPACE (); | |
2450 | ||
2451 | type = LINKONCE_DISCARD; | |
2452 | ||
041ff4dd | 2453 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2454 | { |
2455 | char *s; | |
2456 | char c; | |
2457 | ||
d02603dc | 2458 | c = get_symbol_name (& s); |
252b5132 RH |
2459 | if (strcasecmp (s, "discard") == 0) |
2460 | type = LINKONCE_DISCARD; | |
2461 | else if (strcasecmp (s, "one_only") == 0) | |
2462 | type = LINKONCE_ONE_ONLY; | |
2463 | else if (strcasecmp (s, "same_size") == 0) | |
2464 | type = LINKONCE_SAME_SIZE; | |
2465 | else if (strcasecmp (s, "same_contents") == 0) | |
2466 | type = LINKONCE_SAME_CONTENTS; | |
2467 | else | |
2468 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2469 | ||
d02603dc | 2470 | (void) restore_line_pointer (c); |
252b5132 RH |
2471 | } |
2472 | ||
2473 | #ifdef obj_handle_link_once | |
2474 | obj_handle_link_once (type); | |
2475 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2476 | { |
2477 | flagword flags; | |
2478 | ||
2479 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2480 | as_warn (_(".linkonce is not supported for this object file format")); | |
2481 | ||
fd361982 | 2482 | flags = bfd_section_flags (now_seg); |
252b5132 RH |
2483 | flags |= SEC_LINK_ONCE; |
2484 | switch (type) | |
2485 | { | |
2486 | default: | |
2487 | abort (); | |
2488 | case LINKONCE_DISCARD: | |
2489 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2490 | break; | |
2491 | case LINKONCE_ONE_ONLY: | |
2492 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2493 | break; | |
2494 | case LINKONCE_SAME_SIZE: | |
2495 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2496 | break; | |
2497 | case LINKONCE_SAME_CONTENTS: | |
2498 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2499 | break; | |
2500 | } | |
fd361982 | 2501 | if (!bfd_set_section_flags (now_seg, flags)) |
252b5132 RH |
2502 | as_bad (_("bfd_set_section_flags: %s"), |
2503 | bfd_errmsg (bfd_get_error ())); | |
2504 | } | |
252b5132 RH |
2505 | #endif /* ! defined (obj_handle_link_once) */ |
2506 | ||
2507 | demand_empty_rest_of_line (); | |
2508 | } | |
2509 | ||
e13bab5a | 2510 | void |
9136aa49 | 2511 | bss_alloc (symbolS *symbolP, addressT size, unsigned int align) |
252b5132 | 2512 | { |
e13bab5a | 2513 | char *pfrag; |
252b5132 RH |
2514 | segT current_seg = now_seg; |
2515 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2516 | segT bss_seg = bss_section; |
2517 | ||
252b5132 RH |
2518 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2519 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2520 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2521 | { | |
2522 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2523 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2524 | { |
2525 | bss_seg = subseg_new (".sbss", 1); | |
2526 | seg_info (bss_seg)->bss = 1; | |
a4dd6c97 | 2527 | if (!bfd_set_section_flags (bss_seg, SEC_ALLOC | SEC_SMALL_DATA)) |
252b5132 RH |
2528 | as_warn (_("error setting flags for \".sbss\": %s"), |
2529 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2530 | } |
2531 | } | |
2532 | #endif | |
e13bab5a | 2533 | subseg_set (bss_seg, 1); |
8684e216 | 2534 | |
9136aa49 | 2535 | if (align > OCTETS_PER_BYTE_POWER) |
041ff4dd | 2536 | { |
e13bab5a AM |
2537 | record_alignment (bss_seg, align); |
2538 | frag_align (align, 0, 0); | |
041ff4dd | 2539 | } |
252b5132 | 2540 | |
e13bab5a AM |
2541 | /* Detach from old frag. */ |
2542 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2543 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2544 | |
e13bab5a AM |
2545 | symbol_set_frag (symbolP, frag_now); |
2546 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2547 | *pfrag = 0; | |
f0e652b4 | 2548 | |
e13bab5a AM |
2549 | #ifdef S_SET_SIZE |
2550 | S_SET_SIZE (symbolP, size); | |
2551 | #endif | |
2552 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2553 | |
e13bab5a AM |
2554 | #ifdef OBJ_COFF |
2555 | /* The symbol may already have been created with a preceding | |
2556 | ".globl" directive -- be careful not to step on storage class | |
2557 | in that case. Otherwise, set it to static. */ | |
2558 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2559 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2560 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2561 | |
e13bab5a AM |
2562 | subseg_set (current_seg, current_subseg); |
2563 | } | |
f0e652b4 | 2564 | |
e13bab5a AM |
2565 | offsetT |
2566 | parse_align (int align_bytes) | |
2567 | { | |
2568 | expressionS exp; | |
2569 | addressT align; | |
252b5132 | 2570 | |
e13bab5a AM |
2571 | SKIP_WHITESPACE (); |
2572 | if (*input_line_pointer != ',') | |
2573 | { | |
2574 | no_align: | |
2575 | as_bad (_("expected alignment after size")); | |
2576 | ignore_rest_of_line (); | |
2577 | return -1; | |
2578 | } | |
f0e652b4 | 2579 | |
e13bab5a AM |
2580 | input_line_pointer++; |
2581 | SKIP_WHITESPACE (); | |
f0e652b4 | 2582 | |
e13bab5a AM |
2583 | align = get_absolute_expr (&exp); |
2584 | if (exp.X_op == O_absent) | |
2585 | goto no_align; | |
2586 | ||
2587 | if (!exp.X_unsigned) | |
2588 | { | |
2589 | as_warn (_("alignment negative; 0 assumed")); | |
2590 | align = 0; | |
041ff4dd | 2591 | } |
e13bab5a AM |
2592 | |
2593 | if (align_bytes && align != 0) | |
252b5132 | 2594 | { |
e13bab5a AM |
2595 | /* convert to a power of 2 alignment */ |
2596 | unsigned int alignp2 = 0; | |
2597 | while ((align & 1) == 0) | |
2598 | align >>= 1, ++alignp2; | |
2599 | if (align != 1) | |
252b5132 | 2600 | { |
e13bab5a AM |
2601 | as_bad (_("alignment not a power of 2")); |
2602 | ignore_rest_of_line (); | |
2603 | return -1; | |
252b5132 | 2604 | } |
e13bab5a | 2605 | align = alignp2; |
252b5132 | 2606 | } |
e13bab5a AM |
2607 | return align; |
2608 | } | |
252b5132 | 2609 | |
e13bab5a AM |
2610 | /* Called from s_comm_internal after symbol name and size have been |
2611 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2612 | 1 if this was a ".bss" directive which has a 3rd argument | |
2613 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2614 | with alignment in bytes. */ | |
252b5132 | 2615 | |
13c56984 | 2616 | symbolS * |
e13bab5a AM |
2617 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2618 | { | |
2619 | addressT align = 0; | |
252b5132 | 2620 | |
e13bab5a AM |
2621 | if (needs_align) |
2622 | { | |
2623 | align = parse_align (needs_align - 1); | |
2624 | if (align == (addressT) -1) | |
2625 | return NULL; | |
252b5132 RH |
2626 | } |
2627 | else | |
e13bab5a AM |
2628 | /* Assume some objects may require alignment on some systems. */ |
2629 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2630 | |
e13bab5a AM |
2631 | bss_alloc (symbolP, size, align); |
2632 | return symbolP; | |
041ff4dd | 2633 | } |
252b5132 RH |
2634 | |
2635 | void | |
39e6acbd | 2636 | s_lcomm (int needs_align) |
252b5132 | 2637 | { |
e13bab5a | 2638 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2639 | } |
2640 | ||
041ff4dd | 2641 | void |
39e6acbd | 2642 | s_lcomm_bytes (int needs_align) |
252b5132 | 2643 | { |
e13bab5a | 2644 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2645 | } |
2646 | ||
041ff4dd | 2647 | void |
39e6acbd | 2648 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2649 | { |
3d540e93 | 2650 | char *name; |
252b5132 | 2651 | expressionS exp; |
3d540e93 | 2652 | symbolS *symbolP; |
252b5132 | 2653 | |
041ff4dd | 2654 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
7bfd842d NC |
2655 | if ((name = read_symbol_name ()) == NULL) |
2656 | return; | |
f0e652b4 | 2657 | |
252b5132 RH |
2658 | if (*input_line_pointer != ',') |
2659 | { | |
0e389e77 | 2660 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 2661 | goto err_out; |
252b5132 | 2662 | } |
f0e652b4 | 2663 | |
252b5132 | 2664 | input_line_pointer++; |
9497f5ac | 2665 | expression_and_evaluate (&exp); |
f0e652b4 | 2666 | |
252b5132 RH |
2667 | if (exp.X_op != O_constant |
2668 | && exp.X_op != O_register) | |
2669 | { | |
2670 | as_bad (_("bad expression")); | |
7bfd842d | 2671 | goto err_out; |
252b5132 | 2672 | } |
f0e652b4 | 2673 | |
252b5132 RH |
2674 | symbolP = symbol_find_or_make (name); |
2675 | ||
86ebace2 | 2676 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2677 | { |
2678 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2679 | keep the "external" bit. */ |
252b5132 RH |
2680 | S_SET_SEGMENT (symbolP, |
2681 | (exp.X_op == O_constant | |
2682 | ? absolute_section | |
2683 | : reg_section)); | |
2684 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2685 | } | |
2686 | else | |
2687 | { | |
0e389e77 | 2688 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2689 | } |
f0e652b4 | 2690 | |
252b5132 | 2691 | demand_empty_rest_of_line (); |
7bfd842d NC |
2692 | free (name); |
2693 | return; | |
2694 | ||
2695 | err_out: | |
2696 | ignore_rest_of_line (); | |
2697 | free (name); | |
2698 | return; | |
041ff4dd | 2699 | } |
252b5132 | 2700 | |
0822d075 NC |
2701 | /* Read a line into an sb. Returns the character that ended the line |
2702 | or zero if there are no more lines. */ | |
252b5132 RH |
2703 | |
2704 | static int | |
7592cfd7 | 2705 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2706 | { |
40a4d956 | 2707 | char *eol; |
252b5132 RH |
2708 | |
2709 | if (input_line_pointer[-1] == '\n') | |
2710 | bump_line_counters (); | |
2711 | ||
2712 | if (input_line_pointer >= buffer_limit) | |
2713 | { | |
2714 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2715 | if (buffer_limit == 0) | |
2716 | return 0; | |
2717 | } | |
2718 | ||
7592cfd7 | 2719 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2720 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2721 | input_line_pointer = eol; | |
f0e652b4 | 2722 | |
0822d075 NC |
2723 | /* Don't skip multiple end-of-line characters, because that breaks support |
2724 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2725 | characters but isn't. Instead just skip one end of line character and | |
2726 | return the character skipped so that the caller can re-insert it if | |
2727 | necessary. */ | |
40a4d956 | 2728 | return *input_line_pointer++; |
252b5132 RH |
2729 | } |
2730 | ||
39a45edc | 2731 | static size_t |
7592cfd7 NC |
2732 | get_non_macro_line_sb (sb *line) |
2733 | { | |
2734 | return get_line_sb (line, 0); | |
2735 | } | |
2736 | ||
39a45edc | 2737 | static size_t |
7592cfd7 NC |
2738 | get_macro_line_sb (sb *line) |
2739 | { | |
2740 | return get_line_sb (line, 1); | |
2741 | } | |
2742 | ||
fea17916 | 2743 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2744 | |
2745 | void | |
39e6acbd | 2746 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2747 | { |
3b4dbbbf TS |
2748 | char *eol; |
2749 | const char * file; | |
252b5132 RH |
2750 | unsigned int line; |
2751 | sb s; | |
252b5132 RH |
2752 | const char *err; |
2753 | const char *name; | |
2754 | ||
3b4dbbbf | 2755 | file = as_where (&line); |
252b5132 | 2756 | |
40a4d956 | 2757 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2758 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2759 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2760 | input_line_pointer = eol; | |
252b5132 | 2761 | |
252b5132 | 2762 | if (line_label != NULL) |
360e86f1 JB |
2763 | { |
2764 | sb label; | |
d2ae702c | 2765 | size_t len; |
252b5132 | 2766 | |
d2ae702c L |
2767 | name = S_GET_NAME (line_label); |
2768 | len = strlen (name); | |
2769 | sb_build (&label, len); | |
2770 | sb_add_buffer (&label, name, len); | |
7592cfd7 | 2771 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2772 | sb_kill (&label); |
2773 | } | |
2774 | else | |
7592cfd7 | 2775 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2776 | if (err != NULL) |
02ddf156 | 2777 | as_bad_where (file, line, err, name); |
252b5132 RH |
2778 | else |
2779 | { | |
2780 | if (line_label != NULL) | |
2781 | { | |
5e75c3ab | 2782 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2783 | S_SET_VALUE (line_label, 0); |
2b47531b | 2784 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2785 | } |
2786 | ||
abd63a32 | 2787 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
32e4c1c2 | 2788 | && po_entry_find (po_hash, name) != NULL) |
041ff4dd | 2789 | || (!flag_m68k_mri |
252b5132 | 2790 | && *name == '.' |
32e4c1c2 | 2791 | && po_entry_find (po_hash, name + 1) != NULL)) |
02ddf156 JB |
2792 | as_warn_where (file, |
2793 | line, | |
2794 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2795 | name); |
2796 | } | |
2797 | ||
2798 | sb_kill (&s); | |
2799 | } | |
2800 | ||
2801 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2802 | expansion. */ | |
2803 | ||
2804 | void | |
39e6acbd | 2805 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2806 | { |
5808f4a6 NC |
2807 | if (macro_nest) |
2808 | { | |
2809 | cond_exit_macro (macro_nest); | |
2810 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2811 | } | |
2812 | else | |
2813 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2814 | } |
2815 | ||
2816 | /* Switch in and out of MRI mode. */ | |
2817 | ||
2818 | void | |
39e6acbd | 2819 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2820 | { |
3d540e93 NC |
2821 | int on; |
2822 | #ifdef MRI_MODE_CHANGE | |
2823 | int old_flag; | |
2824 | #endif | |
252b5132 RH |
2825 | |
2826 | on = get_absolute_expression (); | |
3d540e93 | 2827 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2828 | old_flag = flag_mri; |
3d540e93 | 2829 | #endif |
252b5132 RH |
2830 | if (on != 0) |
2831 | { | |
2832 | flag_mri = 1; | |
2833 | #ifdef TC_M68K | |
2834 | flag_m68k_mri = 1; | |
2835 | #endif | |
2836 | macro_mri_mode (1); | |
2837 | } | |
2838 | else | |
2839 | { | |
2840 | flag_mri = 0; | |
abd63a32 | 2841 | #ifdef TC_M68K |
252b5132 | 2842 | flag_m68k_mri = 0; |
abd63a32 | 2843 | #endif |
252b5132 RH |
2844 | macro_mri_mode (0); |
2845 | } | |
2846 | ||
2847 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2848 | update the operator rankings. */ | |
2849 | expr_set_precedence (); | |
2850 | ||
2851 | #ifdef MRI_MODE_CHANGE | |
2852 | if (on != old_flag) | |
2853 | MRI_MODE_CHANGE (on); | |
2854 | #endif | |
2855 | ||
2856 | demand_empty_rest_of_line (); | |
2857 | } | |
2858 | ||
2859 | /* Handle changing the location counter. */ | |
2860 | ||
2861 | static void | |
39e6acbd | 2862 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 | 2863 | { |
259af69e AM |
2864 | if (segment != now_seg |
2865 | && segment != absolute_section | |
2866 | && segment != expr_section) | |
0e389e77 | 2867 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2868 | |
2869 | if (now_seg == absolute_section) | |
2870 | { | |
2871 | if (fill != 0) | |
2872 | as_warn (_("ignoring fill value in absolute section")); | |
2873 | if (exp->X_op != O_constant) | |
2874 | { | |
2875 | as_bad (_("only constant offsets supported in absolute section")); | |
2876 | exp->X_add_number = 0; | |
2877 | } | |
2878 | abs_section_offset = exp->X_add_number; | |
2879 | } | |
2880 | else | |
2881 | { | |
2882 | char *p; | |
2289f85d AM |
2883 | symbolS *sym = exp->X_add_symbol; |
2884 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2885 | |
ec9ab52c JB |
2886 | if (fill && in_bss ()) |
2887 | as_warn (_("ignoring fill value in section `%s'"), | |
2888 | segment_name (now_seg)); | |
2889 | ||
2289f85d AM |
2890 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2891 | { | |
2892 | /* Handle complex expressions. */ | |
2893 | sym = make_expr_symbol (exp); | |
2894 | off = 0; | |
2895 | } | |
2896 | ||
2897 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2898 | *p = fill; |
2899 | } | |
2900 | } | |
2901 | ||
041ff4dd | 2902 | void |
39e6acbd | 2903 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2904 | { |
3d540e93 | 2905 | segT segment; |
252b5132 | 2906 | expressionS exp; |
3d540e93 | 2907 | long temp_fill; |
252b5132 RH |
2908 | |
2909 | #ifdef md_flush_pending_output | |
2910 | md_flush_pending_output (); | |
2911 | #endif | |
2912 | ||
2913 | /* The m68k MRI assembler has a different meaning for .org. It | |
2914 | means to create an absolute section at a given address. We can't | |
2915 | support that--use a linker script instead. */ | |
2916 | if (flag_m68k_mri) | |
2917 | { | |
2918 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2919 | ignore_rest_of_line (); | |
2920 | return; | |
2921 | } | |
2922 | ||
2923 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2924 | thing as a sub-segment-relative origin. Any absolute origin is | |
2925 | given a warning, then assumed to be segment-relative. Any | |
2926 | segmented origin expression ("foo+42") had better be in the right | |
2927 | segment or the .org is ignored. | |
2928 | ||
2929 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2930 | we never know sub-segment sizes when we are reading code. BSD | |
2931 | will crash trying to emit negative numbers of filler bytes in | |
2932 | certain .orgs. We don't crash, but see as-write for that code. | |
2933 | ||
2934 | Don't make frag if need_pass_2==1. */ | |
2935 | segment = get_known_segmented_expression (&exp); | |
2936 | if (*input_line_pointer == ',') | |
2937 | { | |
2938 | input_line_pointer++; | |
2939 | temp_fill = get_absolute_expression (); | |
2940 | } | |
2941 | else | |
2942 | temp_fill = 0; | |
2943 | ||
2944 | if (!need_pass_2) | |
2945 | do_org (segment, &exp, temp_fill); | |
2946 | ||
2947 | demand_empty_rest_of_line (); | |
041ff4dd | 2948 | } |
252b5132 RH |
2949 | |
2950 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2951 | called by the obj-format routine which handles section changing | |
2952 | when in MRI mode. It will create a new section, and return it. It | |
2953 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2954 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2955 | |
2956 | void | |
39e6acbd | 2957 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2958 | { |
2959 | #ifdef TC_M68K | |
2960 | ||
2961 | char *name; | |
2962 | char c; | |
2963 | segT seg; | |
2964 | ||
2965 | SKIP_WHITESPACE (); | |
041ff4dd | 2966 | |
252b5132 | 2967 | name = input_line_pointer; |
3882b010 | 2968 | if (!ISDIGIT (*name)) |
d02603dc | 2969 | c = get_symbol_name (& name); |
252b5132 RH |
2970 | else |
2971 | { | |
2972 | do | |
2973 | { | |
2974 | ++input_line_pointer; | |
2975 | } | |
3882b010 | 2976 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2977 | |
252b5132 RH |
2978 | c = *input_line_pointer; |
2979 | *input_line_pointer = '\0'; | |
2980 | } | |
2981 | ||
2982 | name = xstrdup (name); | |
2983 | ||
d02603dc | 2984 | c = restore_line_pointer (c); |
252b5132 RH |
2985 | |
2986 | seg = subseg_new (name, 0); | |
2987 | ||
d02603dc | 2988 | if (c == ',') |
252b5132 | 2989 | { |
9136aa49 | 2990 | unsigned int align; |
252b5132 RH |
2991 | |
2992 | ++input_line_pointer; | |
2993 | align = get_absolute_expression (); | |
2994 | record_alignment (seg, align); | |
2995 | } | |
2996 | ||
2997 | *type = 'C'; | |
2998 | if (*input_line_pointer == ',') | |
2999 | { | |
3000 | c = *++input_line_pointer; | |
3882b010 | 3001 | c = TOUPPER (c); |
252b5132 RH |
3002 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
3003 | *type = c; | |
3004 | else | |
3005 | as_bad (_("unrecognized section type")); | |
3006 | ++input_line_pointer; | |
3007 | ||
252b5132 RH |
3008 | { |
3009 | flagword flags; | |
3010 | ||
3011 | flags = SEC_NO_FLAGS; | |
3012 | if (*type == 'C') | |
3013 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
3014 | else if (*type == 'D' || *type == 'M') | |
3015 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
3016 | else if (*type == 'R') | |
3017 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
3018 | if (flags != SEC_NO_FLAGS) | |
3019 | { | |
fd361982 | 3020 | if (!bfd_set_section_flags (seg, flags)) |
252b5132 | 3021 | as_warn (_("error setting flags for \"%s\": %s"), |
fd361982 | 3022 | bfd_section_name (seg), |
252b5132 RH |
3023 | bfd_errmsg (bfd_get_error ())); |
3024 | } | |
3025 | } | |
252b5132 RH |
3026 | } |
3027 | ||
3028 | /* Ignore the HP type. */ | |
3029 | if (*input_line_pointer == ',') | |
3030 | input_line_pointer += 2; | |
3031 | ||
3032 | demand_empty_rest_of_line (); | |
3033 | ||
3034 | #else /* ! TC_M68K */ | |
252b5132 RH |
3035 | /* The MRI assembler seems to use different forms of .sect for |
3036 | different targets. */ | |
3037 | as_bad ("MRI mode not supported for this target"); | |
3038 | ignore_rest_of_line (); | |
252b5132 RH |
3039 | #endif /* ! TC_M68K */ |
3040 | } | |
3041 | ||
3042 | /* Handle the .print pseudo-op. */ | |
3043 | ||
3044 | void | |
39e6acbd | 3045 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3046 | { |
3047 | char *s; | |
3048 | int len; | |
3049 | ||
3050 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
3051 | if (s != NULL) |
3052 | printf ("%s\n", s); | |
252b5132 RH |
3053 | demand_empty_rest_of_line (); |
3054 | } | |
3055 | ||
3056 | /* Handle the .purgem pseudo-op. */ | |
3057 | ||
3058 | void | |
39e6acbd | 3059 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3060 | { |
3061 | if (is_it_end_of_statement ()) | |
3062 | { | |
3063 | demand_empty_rest_of_line (); | |
3064 | return; | |
3065 | } | |
3066 | ||
3067 | do | |
3068 | { | |
3069 | char *name; | |
3070 | char c; | |
3071 | ||
3072 | SKIP_WHITESPACE (); | |
d02603dc | 3073 | c = get_symbol_name (& name); |
252b5132 RH |
3074 | delete_macro (name); |
3075 | *input_line_pointer = c; | |
d02603dc | 3076 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
3077 | } |
3078 | while (*input_line_pointer++ == ','); | |
3079 | ||
3080 | --input_line_pointer; | |
3081 | demand_empty_rest_of_line (); | |
3082 | } | |
3083 | ||
057f53c1 | 3084 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 3085 | |
057f53c1 JB |
3086 | static void |
3087 | s_bad_end (int endr) | |
7f28ab9d | 3088 | { |
cc643b88 | 3089 | as_warn (_(".end%c encountered without preceding %s"), |
057f53c1 JB |
3090 | endr ? 'r' : 'm', |
3091 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
3092 | demand_empty_rest_of_line (); |
3093 | } | |
3094 | ||
3095 | /* Handle the .rept pseudo-op. */ | |
3096 | ||
252b5132 | 3097 | void |
39e6acbd | 3098 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3099 | { |
808811a3 | 3100 | size_t count; |
252b5132 | 3101 | |
808811a3 | 3102 | count = (size_t) get_absolute_expression (); |
252b5132 | 3103 | |
041ff4dd | 3104 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
3105 | } |
3106 | ||
3107 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 3108 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
3109 | |
3110 | void | |
808811a3 | 3111 | do_repeat (size_t count, const char *start, const char *end) |
6dc19fc4 TW |
3112 | { |
3113 | sb one; | |
3114 | sb many; | |
3115 | ||
808811a3 NC |
3116 | if (((ssize_t) count) < 0) |
3117 | { | |
3118 | as_bad (_("negative count for %s - ignored"), start); | |
3119 | count = 0; | |
3120 | } | |
3121 | ||
252b5132 | 3122 | sb_new (&one); |
7592cfd7 | 3123 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 3124 | { |
6dc19fc4 | 3125 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
3126 | return; |
3127 | } | |
3128 | ||
d2ae702c | 3129 | sb_build (&many, count * one.len); |
252b5132 RH |
3130 | while (count-- > 0) |
3131 | sb_add_sb (&many, &one); | |
3132 | ||
3133 | sb_kill (&one); | |
3134 | ||
9f10757c | 3135 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
3136 | sb_kill (&many); |
3137 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3138 | } | |
3139 | ||
c7927a3c | 3140 | /* Like do_repeat except that any text matching EXPANDER in the |
33eaf5de | 3141 | block is replaced by the iteration count. */ |
c7927a3c NC |
3142 | |
3143 | void | |
808811a3 | 3144 | do_repeat_with_expander (size_t count, |
c7927a3c NC |
3145 | const char * start, |
3146 | const char * end, | |
3147 | const char * expander) | |
3148 | { | |
3149 | sb one; | |
3150 | sb many; | |
3151 | ||
808811a3 NC |
3152 | if (((ssize_t) count) < 0) |
3153 | { | |
3154 | as_bad (_("negative count for %s - ignored"), start); | |
3155 | count = 0; | |
3156 | } | |
3157 | ||
c7927a3c NC |
3158 | sb_new (&one); |
3159 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3160 | { | |
3161 | as_bad (_("%s without %s"), start, end); | |
3162 | return; | |
3163 | } | |
3164 | ||
3165 | sb_new (&many); | |
3166 | ||
3167 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3168 | { | |
3169 | while (count -- > 0) | |
3170 | { | |
3171 | int len; | |
3172 | char * sub; | |
3173 | sb processed; | |
3174 | ||
d2ae702c | 3175 | sb_build (& processed, one.len); |
c7927a3c NC |
3176 | sb_add_sb (& processed, & one); |
3177 | sub = strstr (processed.ptr, expander); | |
808811a3 | 3178 | len = sprintf (sub, "%lu", (unsigned long) count); |
c7927a3c | 3179 | gas_assert (len < 8); |
9dcbfff1 AS |
3180 | memmove (sub + len, sub + 8, |
3181 | processed.ptr + processed.len - (sub + 8)); | |
c7927a3c NC |
3182 | processed.len -= (8 - len); |
3183 | sb_add_sb (& many, & processed); | |
3184 | sb_kill (& processed); | |
3185 | } | |
3186 | } | |
3187 | else | |
3188 | while (count-- > 0) | |
3189 | sb_add_sb (&many, &one); | |
3190 | ||
3191 | sb_kill (&one); | |
3192 | ||
3193 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3194 | sb_kill (&many); | |
3195 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3196 | } | |
3197 | ||
6dc19fc4 TW |
3198 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3199 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3200 | are properly nested. |
6dc19fc4 TW |
3201 | |
3202 | This function makes it easier to implement a premature "break" out of the | |
3203 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3204 | such as line substitutions. */ |
6dc19fc4 TW |
3205 | |
3206 | void | |
39e6acbd | 3207 | end_repeat (int extra) |
6dc19fc4 TW |
3208 | { |
3209 | cond_exit_macro (macro_nest); | |
3210 | while (extra-- >= 0) | |
3211 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3212 | } | |
3213 | ||
be95a9c1 | 3214 | static void |
9497f5ac | 3215 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3216 | { |
3217 | symbolS *symbolP; | |
3218 | ||
3219 | if (name[0] == '.' && name[1] == '\0') | |
3220 | { | |
3221 | /* Turn '. = mumble' into a .org mumble. */ | |
3222 | segT segment; | |
3223 | expressionS exp; | |
3224 | ||
3225 | segment = get_known_segmented_expression (&exp); | |
3226 | ||
3227 | if (!need_pass_2) | |
3228 | do_org (segment, &exp, 0); | |
3229 | ||
3230 | return; | |
3231 | } | |
3232 | ||
3233 | if ((symbolP = symbol_find (name)) == NULL | |
3234 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3235 | { | |
3236 | symbolP = symbol_find_or_make (name); | |
3237 | #ifndef NO_LISTING | |
3238 | /* When doing symbol listings, play games with dummy fragments living | |
3239 | outside the normal fragment chain to record the file and line info | |
3240 | for this symbol. */ | |
3241 | if (listing & LISTING_SYMBOLS) | |
3242 | { | |
3243 | extern struct list_info_struct *listing_tail; | |
8860a416 | 3244 | fragS *dummy_frag = XCNEW (fragS); |
be95a9c1 AM |
3245 | dummy_frag->line = listing_tail; |
3246 | dummy_frag->fr_symbol = symbolP; | |
3247 | symbol_set_frag (symbolP, dummy_frag); | |
3248 | } | |
3249 | #endif | |
76bd66cf | 3250 | #if defined (OBJ_COFF) && !defined (TE_PE) |
31d20a21 AM |
3251 | /* "set" symbols are local unless otherwise specified. */ |
3252 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3253 | #endif |
3254 | } | |
3255 | ||
6a2b6326 | 3256 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac | 3257 | { |
9497f5ac | 3258 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) |
6885131b | 3259 | && !S_CAN_BE_REDEFINED (symbolP)) |
9497f5ac NC |
3260 | { |
3261 | as_bad (_("symbol `%s' is already defined"), name); | |
62bd6b5f AM |
3262 | ignore_rest_of_line (); |
3263 | input_line_pointer--; | |
3264 | return; | |
9497f5ac NC |
3265 | } |
3266 | /* If the symbol is volatile, copy the symbol and replace the | |
3267 | original with the copy, so that previous uses of the symbol will | |
3268 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3269 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3270 | symbolP = symbol_clone (symbolP, 1); |
3271 | } | |
3272 | ||
3273 | if (mode == 0) | |
3274 | S_SET_VOLATILE (symbolP); | |
3275 | else if (mode < 0) | |
3276 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3277 | |
3278 | pseudo_set (symbolP); | |
be95a9c1 AM |
3279 | } |
3280 | ||
9497f5ac NC |
3281 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3282 | then this is .equiv, and it is an error if the symbol is already | |
3283 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3284 | reference. */ | |
252b5132 | 3285 | |
041ff4dd | 3286 | void |
39e6acbd | 3287 | s_set (int equiv) |
252b5132 | 3288 | { |
be95a9c1 | 3289 | char *name; |
252b5132 | 3290 | |
041ff4dd NC |
3291 | /* Especial apologies for the random logic: |
3292 | this just grew, and could be parsed much more simply! | |
3293 | Dean in haste. */ | |
7bfd842d NC |
3294 | if ((name = read_symbol_name ()) == NULL) |
3295 | return; | |
252b5132 RH |
3296 | |
3297 | if (*input_line_pointer != ',') | |
3298 | { | |
0e389e77 | 3299 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 | 3300 | ignore_rest_of_line (); |
7bfd842d | 3301 | free (name); |
252b5132 RH |
3302 | return; |
3303 | } | |
3304 | ||
3305 | input_line_pointer++; | |
be95a9c1 | 3306 | assign_symbol (name, equiv); |
31d20a21 | 3307 | demand_empty_rest_of_line (); |
7bfd842d | 3308 | free (name); |
041ff4dd | 3309 | } |
252b5132 | 3310 | |
041ff4dd | 3311 | void |
39e6acbd | 3312 | s_space (int mult) |
252b5132 RH |
3313 | { |
3314 | expressionS exp; | |
3315 | expressionS val; | |
3316 | char *p = 0; | |
3317 | char *stop = NULL; | |
fb25138b | 3318 | char stopc = 0; |
252b5132 RH |
3319 | int bytes; |
3320 | ||
3321 | #ifdef md_flush_pending_output | |
3322 | md_flush_pending_output (); | |
3323 | #endif | |
3324 | ||
cc3f603a JM |
3325 | #ifdef md_cons_align |
3326 | md_cons_align (1); | |
3327 | #endif | |
3328 | ||
252b5132 RH |
3329 | if (flag_mri) |
3330 | stop = mri_comment_field (&stopc); | |
3331 | ||
3332 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3333 | this is ds.b. */ | |
3334 | if (flag_m68k_mri && mult > 1) | |
3335 | { | |
3336 | if (now_seg == absolute_section) | |
3337 | { | |
3338 | abs_section_offset += abs_section_offset & 1; | |
3339 | if (line_label != NULL) | |
3340 | S_SET_VALUE (line_label, abs_section_offset); | |
3341 | } | |
3342 | else if (mri_common_symbol != NULL) | |
3343 | { | |
91d6fa6a | 3344 | valueT mri_val; |
252b5132 | 3345 | |
91d6fa6a NC |
3346 | mri_val = S_GET_VALUE (mri_common_symbol); |
3347 | if ((mri_val & 1) != 0) | |
252b5132 | 3348 | { |
91d6fa6a | 3349 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3350 | if (line_label != NULL) |
3351 | { | |
2b47531b ILT |
3352 | expressionS *symexp; |
3353 | ||
3354 | symexp = symbol_get_value_expression (line_label); | |
3355 | know (symexp->X_op == O_symbol); | |
3356 | know (symexp->X_add_symbol == mri_common_symbol); | |
3357 | symexp->X_add_number += 1; | |
252b5132 RH |
3358 | } |
3359 | } | |
3360 | } | |
3361 | else | |
3362 | { | |
3363 | do_align (1, (char *) NULL, 0, 0); | |
3364 | if (line_label != NULL) | |
3365 | { | |
2b47531b | 3366 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3367 | S_SET_VALUE (line_label, frag_now_fix ()); |
3368 | } | |
3369 | } | |
3370 | } | |
3371 | ||
3372 | bytes = mult; | |
3373 | ||
3374 | expression (&exp); | |
3375 | ||
3376 | SKIP_WHITESPACE (); | |
3377 | if (*input_line_pointer == ',') | |
3378 | { | |
3379 | ++input_line_pointer; | |
3380 | expression (&val); | |
3381 | } | |
3382 | else | |
3383 | { | |
3384 | val.X_op = O_constant; | |
3385 | val.X_add_number = 0; | |
3386 | } | |
3387 | ||
ec9ab52c JB |
3388 | if ((val.X_op != O_constant |
3389 | || val.X_add_number < - 0x80 | |
3390 | || val.X_add_number > 0xff | |
3391 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3392 | && (now_seg != absolute_section && !in_bss ())) | |
252b5132 | 3393 | { |
9497f5ac | 3394 | resolve_expression (&exp); |
252b5132 | 3395 | if (exp.X_op != O_constant) |
0e389e77 | 3396 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3397 | else |
3398 | { | |
3399 | offsetT i; | |
3400 | ||
005304aa NC |
3401 | /* PR 20901: Check for excessive values. |
3402 | FIXME: 1<<10 is an arbitrary limit. Maybe use maxpagesize instead ? */ | |
3403 | if (exp.X_add_number < 0 || exp.X_add_number > (1 << 10)) | |
5eecd862 | 3404 | as_bad (_("size value for space directive too large: %lx"), |
005304aa NC |
3405 | (long) exp.X_add_number); |
3406 | else | |
3407 | { | |
3408 | if (mult == 0) | |
3409 | mult = 1; | |
3410 | bytes = mult * exp.X_add_number; | |
3411 | ||
3412 | for (i = 0; i < exp.X_add_number; i++) | |
3413 | emit_expr (&val, mult); | |
3414 | } | |
252b5132 RH |
3415 | } |
3416 | } | |
3417 | else | |
3418 | { | |
9497f5ac NC |
3419 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3420 | resolve_expression (&exp); | |
3421 | ||
252b5132 RH |
3422 | if (exp.X_op == O_constant) |
3423 | { | |
a4a151e6 | 3424 | offsetT repeat; |
252b5132 RH |
3425 | |
3426 | repeat = exp.X_add_number; | |
3427 | if (mult) | |
3428 | repeat *= mult; | |
3429 | bytes = repeat; | |
3430 | if (repeat <= 0) | |
3431 | { | |
2d150871 RO |
3432 | if (!flag_mri) |
3433 | as_warn (_(".space repeat count is zero, ignored")); | |
3434 | else if (repeat < 0) | |
252b5132 RH |
3435 | as_warn (_(".space repeat count is negative, ignored")); |
3436 | goto getout; | |
3437 | } | |
3438 | ||
3439 | /* If we are in the absolute section, just bump the offset. */ | |
3440 | if (now_seg == absolute_section) | |
3441 | { | |
ec9ab52c JB |
3442 | if (val.X_op != O_constant || val.X_add_number != 0) |
3443 | as_warn (_("ignoring fill value in absolute section")); | |
252b5132 RH |
3444 | abs_section_offset += repeat; |
3445 | goto getout; | |
3446 | } | |
3447 | ||
3448 | /* If we are secretly in an MRI common section, then | |
3449 | creating space just increases the size of the common | |
3450 | symbol. */ | |
3451 | if (mri_common_symbol != NULL) | |
3452 | { | |
3453 | S_SET_VALUE (mri_common_symbol, | |
3454 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3455 | goto getout; | |
3456 | } | |
3457 | ||
3458 | if (!need_pass_2) | |
3459 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3460 | (offsetT) repeat, (char *) 0); | |
3461 | } | |
3462 | else | |
3463 | { | |
3464 | if (now_seg == absolute_section) | |
3465 | { | |
3466 | as_bad (_("space allocation too complex in absolute section")); | |
3467 | subseg_set (text_section, 0); | |
3468 | } | |
f0e652b4 | 3469 | |
252b5132 RH |
3470 | if (mri_common_symbol != NULL) |
3471 | { | |
3472 | as_bad (_("space allocation too complex in common section")); | |
3473 | mri_common_symbol = NULL; | |
3474 | } | |
f0e652b4 | 3475 | |
252b5132 RH |
3476 | if (!need_pass_2) |
3477 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3478 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3479 | } | |
3480 | ||
ec9ab52c JB |
3481 | if ((val.X_op != O_constant || val.X_add_number != 0) && in_bss ()) |
3482 | as_warn (_("ignoring fill value in section `%s'"), | |
3483 | segment_name (now_seg)); | |
3484 | else if (p) | |
252b5132 RH |
3485 | *p = val.X_add_number; |
3486 | } | |
3487 | ||
3488 | getout: | |
3489 | ||
3490 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3491 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3492 | or dcb.b. */ | |
3493 | if (flag_mri && (bytes & 1) != 0) | |
3494 | mri_pending_align = 1; | |
3495 | ||
3496 | demand_empty_rest_of_line (); | |
3497 | ||
3498 | if (flag_mri) | |
3499 | mri_comment_end (stop, stopc); | |
3500 | } | |
3501 | ||
62a02d25 | 3502 | void |
8f065d3b | 3503 | s_nops (int ignore ATTRIBUTE_UNUSED) |
62a02d25 L |
3504 | { |
3505 | expressionS exp; | |
3506 | expressionS val; | |
3507 | ||
3508 | #ifdef md_flush_pending_output | |
3509 | md_flush_pending_output (); | |
3510 | #endif | |
3511 | ||
3512 | #ifdef md_cons_align | |
3513 | md_cons_align (1); | |
3514 | #endif | |
3515 | ||
3516 | expression (&exp); | |
3517 | ||
3518 | if (*input_line_pointer == ',') | |
3519 | { | |
3520 | ++input_line_pointer; | |
3521 | expression (&val); | |
3522 | } | |
3523 | else | |
3524 | { | |
3525 | val.X_op = O_constant; | |
3526 | val.X_add_number = 0; | |
3527 | } | |
3528 | ||
3529 | if (val.X_op == O_constant) | |
3530 | { | |
3531 | if (val.X_add_number < 0) | |
3532 | { | |
3533 | as_warn (_("negative nop control byte, ignored")); | |
3534 | val.X_add_number = 0; | |
3535 | } | |
3536 | ||
3537 | if (!need_pass_2) | |
3538 | { | |
3539 | /* Store the no-op instruction control byte in the first byte | |
3540 | of frag. */ | |
3541 | char *p; | |
3542 | symbolS *sym = make_expr_symbol (&exp); | |
3543 | p = frag_var (rs_space_nop, 1, 1, (relax_substateT) 0, | |
3544 | sym, (offsetT) 0, (char *) 0); | |
3545 | *p = val.X_add_number; | |
3546 | } | |
3547 | } | |
3548 | else | |
8f065d3b | 3549 | as_bad (_("unsupported variable nop control in .nops directive")); |
62a02d25 L |
3550 | |
3551 | demand_empty_rest_of_line (); | |
3552 | } | |
3553 | ||
252b5132 RH |
3554 | /* This is like s_space, but the value is a floating point number with |
3555 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3556 | friends. */ | |
3557 | ||
3558 | void | |
39e6acbd | 3559 | s_float_space (int float_type) |
252b5132 RH |
3560 | { |
3561 | offsetT count; | |
3562 | int flen; | |
3563 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3564 | char *stop = NULL; | |
fb25138b | 3565 | char stopc = 0; |
252b5132 | 3566 | |
cc3f603a JM |
3567 | #ifdef md_cons_align |
3568 | md_cons_align (1); | |
3569 | #endif | |
3570 | ||
252b5132 RH |
3571 | if (flag_mri) |
3572 | stop = mri_comment_field (&stopc); | |
3573 | ||
3574 | count = get_absolute_expression (); | |
3575 | ||
3576 | SKIP_WHITESPACE (); | |
3577 | if (*input_line_pointer != ',') | |
3578 | { | |
3579 | as_bad (_("missing value")); | |
3580 | ignore_rest_of_line (); | |
3581 | if (flag_mri) | |
3582 | mri_comment_end (stop, stopc); | |
3583 | return; | |
3584 | } | |
3585 | ||
3586 | ++input_line_pointer; | |
3587 | ||
3588 | SKIP_WHITESPACE (); | |
3589 | ||
3590 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3591 | * letter is legal. */ | |
3592 | if (input_line_pointer[0] == '0' | |
3882b010 | 3593 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3594 | input_line_pointer += 2; |
3595 | ||
3596 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3597 | with the exact digits specified. */ | |
3598 | if (input_line_pointer[0] == ':') | |
3599 | { | |
3600 | flen = hex_float (float_type, temp); | |
3601 | if (flen < 0) | |
3602 | { | |
3603 | ignore_rest_of_line (); | |
3604 | if (flag_mri) | |
3605 | mri_comment_end (stop, stopc); | |
3606 | return; | |
3607 | } | |
3608 | } | |
3609 | else | |
3610 | { | |
6d4af3c2 | 3611 | const char *err; |
252b5132 RH |
3612 | |
3613 | err = md_atof (float_type, temp, &flen); | |
3614 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3615 | know (err != NULL || flen > 0); |
252b5132 RH |
3616 | if (err) |
3617 | { | |
0e389e77 | 3618 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3619 | ignore_rest_of_line (); |
3620 | if (flag_mri) | |
3621 | mri_comment_end (stop, stopc); | |
3622 | return; | |
3623 | } | |
3624 | } | |
3625 | ||
3626 | while (--count >= 0) | |
3627 | { | |
3628 | char *p; | |
3629 | ||
3630 | p = frag_more (flen); | |
3631 | memcpy (p, temp, (unsigned int) flen); | |
3632 | } | |
3633 | ||
3634 | demand_empty_rest_of_line (); | |
3635 | ||
3636 | if (flag_mri) | |
3637 | mri_comment_end (stop, stopc); | |
3638 | } | |
3639 | ||
3640 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3641 | ||
3642 | void | |
39e6acbd | 3643 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3644 | { |
3645 | char *stop = NULL; | |
fb25138b | 3646 | char stopc = 0; |
252b5132 RH |
3647 | |
3648 | if (flag_mri) | |
3649 | stop = mri_comment_field (&stopc); | |
3650 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3651 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3652 | /* The ELF backend needs to know that we are changing sections, so | |
3653 | that .previous works correctly. */ | |
f43abd2b | 3654 | if (IS_ELF) |
a2902af6 TS |
3655 | obj_elf_section_change_hook (); |
3656 | #endif | |
252b5132 RH |
3657 | subseg_set (absolute_section, 0); |
3658 | demand_empty_rest_of_line (); | |
3659 | if (flag_mri) | |
3660 | mri_comment_end (stop, stopc); | |
3661 | } | |
3662 | ||
3663 | void | |
39e6acbd | 3664 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3665 | { |
3d540e93 | 3666 | int temp; |
252b5132 RH |
3667 | |
3668 | temp = get_absolute_expression (); | |
3669 | subseg_set (text_section, (subsegT) temp); | |
3670 | demand_empty_rest_of_line (); | |
041ff4dd | 3671 | } |
06e77878 AO |
3672 | |
3673 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3674 | referenced directly, will cause y to become a weak symbol. */ | |
3675 | void | |
3676 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3677 | { | |
3678 | char *name; | |
06e77878 AO |
3679 | symbolS *symbolP; |
3680 | symbolS *symbolP2; | |
3681 | expressionS exp; | |
3682 | ||
7bfd842d NC |
3683 | if ((name = read_symbol_name ()) == NULL) |
3684 | return; | |
06e77878 AO |
3685 | |
3686 | symbolP = symbol_find_or_make (name); | |
3687 | ||
b54788f8 AO |
3688 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3689 | { | |
89cdfe57 | 3690 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3691 | { |
3692 | as_bad (_("symbol `%s' is already defined"), name); | |
7bfd842d | 3693 | goto err_out; |
92757bc9 | 3694 | } |
89cdfe57 | 3695 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3696 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3697 | } |
3698 | ||
06e77878 AO |
3699 | SKIP_WHITESPACE (); |
3700 | ||
3701 | if (*input_line_pointer != ',') | |
3702 | { | |
06e77878 | 3703 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 3704 | goto err_out; |
06e77878 AO |
3705 | } |
3706 | ||
3707 | input_line_pointer++; | |
3708 | ||
3709 | SKIP_WHITESPACE (); | |
7bfd842d | 3710 | free (name); |
06e77878 | 3711 | |
7bfd842d NC |
3712 | if ((name = read_symbol_name ()) == NULL) |
3713 | return; | |
06e77878 AO |
3714 | |
3715 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3716 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3717 | { | |
3718 | symbolP2 = symbol_find_or_make (name); | |
3719 | S_SET_WEAKREFD (symbolP2); | |
3720 | } | |
3721 | else | |
3722 | { | |
3723 | symbolS *symp = symbolP2; | |
3724 | ||
3725 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3726 | { | |
3727 | expressionS *expP = symbol_get_value_expression (symp); | |
3728 | ||
9c2799c2 | 3729 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3730 | && expP->X_add_number == 0); |
3731 | symp = expP->X_add_symbol; | |
3732 | } | |
3733 | if (symp == symbolP) | |
3734 | { | |
3735 | char *loop; | |
3736 | ||
3737 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3738 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3739 | |
3740 | symp = symbolP2; | |
3741 | while (symp != symbolP) | |
3742 | { | |
3743 | char *old_loop = loop; | |
7bfd842d | 3744 | |
06e77878 | 3745 | symp = symbol_get_value_expression (symp)->X_add_symbol; |
1bf57e9f AM |
3746 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3747 | (const char *) NULL); | |
06e77878 AO |
3748 | free (old_loop); |
3749 | } | |
3750 | ||
3751 | as_bad (_("%s: would close weakref loop: %s"), | |
3752 | S_GET_NAME (symbolP), loop); | |
3753 | ||
3754 | free (loop); | |
7bfd842d | 3755 | free (name); |
06e77878 AO |
3756 | ignore_rest_of_line (); |
3757 | return; | |
3758 | } | |
3759 | ||
3760 | /* Short-circuiting instead of just checking here might speed | |
3761 | things up a tiny little bit, but loop error messages would | |
3762 | miss intermediate links. */ | |
3763 | /* symbolP2 = symp; */ | |
3764 | } | |
3765 | ||
06e77878 AO |
3766 | memset (&exp, 0, sizeof (exp)); |
3767 | exp.X_op = O_symbol; | |
3768 | exp.X_add_symbol = symbolP2; | |
3769 | ||
3770 | S_SET_SEGMENT (symbolP, undefined_section); | |
3771 | symbol_set_value_expression (symbolP, &exp); | |
3772 | symbol_set_frag (symbolP, &zero_address_frag); | |
3773 | S_SET_WEAKREFR (symbolP); | |
3774 | ||
3775 | demand_empty_rest_of_line (); | |
7bfd842d NC |
3776 | free (name); |
3777 | return; | |
3778 | ||
3779 | err_out: | |
3780 | ignore_rest_of_line (); | |
3781 | free (name); | |
3782 | return; | |
06e77878 | 3783 | } |
252b5132 | 3784 | \f |
c95b35a9 NS |
3785 | |
3786 | /* Verify that we are at the end of a line. If not, issue an error and | |
3787 | skip to EOL. */ | |
3788 | ||
041ff4dd | 3789 | void |
39e6acbd | 3790 | demand_empty_rest_of_line (void) |
252b5132 RH |
3791 | { |
3792 | SKIP_WHITESPACE (); | |
3793 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3794 | input_line_pointer++; |
252b5132 | 3795 | else |
252b5132 | 3796 | { |
3882b010 | 3797 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3798 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3799 | *input_line_pointer); |
252b5132 | 3800 | else |
c95b35a9 | 3801 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3802 | *input_line_pointer); |
c95b35a9 | 3803 | ignore_rest_of_line (); |
252b5132 | 3804 | } |
fa94de6b | 3805 | |
c95b35a9 NS |
3806 | /* Return pointing just after end-of-line. */ |
3807 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3808 | } | |
3809 | ||
3810 | /* Silently advance to the end of line. Use this after already having | |
3811 | issued an error about something bad. */ | |
3812 | ||
3813 | void | |
3814 | ignore_rest_of_line (void) | |
3815 | { | |
3816 | while (input_line_pointer < buffer_limit | |
3817 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3818 | input_line_pointer++; | |
f0e652b4 | 3819 | |
041ff4dd NC |
3820 | input_line_pointer++; |
3821 | ||
3822 | /* Return pointing just after end-of-line. */ | |
3076e594 NC |
3823 | if (input_line_pointer <= buffer_limit) |
3824 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
252b5132 RH |
3825 | } |
3826 | ||
be95a9c1 AM |
3827 | /* Sets frag for given symbol to zero_address_frag, except when the |
3828 | symbol frag is already set to a dummy listing frag. */ | |
3829 | ||
3830 | static void | |
3831 | set_zero_frag (symbolS *symbolP) | |
3832 | { | |
3833 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3834 | symbol_set_frag (symbolP, &zero_address_frag); | |
3835 | } | |
3836 | ||
041ff4dd | 3837 | /* In: Pointer to a symbol. |
d6415f6c | 3838 | Input_line_pointer->expression. |
f0e652b4 | 3839 | |
041ff4dd | 3840 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3841 | Tried to set symbol to value of expression. |
3842 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3843 | |
252b5132 | 3844 | void |
39e6acbd | 3845 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3846 | { |
3847 | expressionS exp; | |
be95a9c1 | 3848 | segT seg; |
252b5132 | 3849 | |
041ff4dd | 3850 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3851 | |
9497f5ac NC |
3852 | if (!S_IS_FORWARD_REF (symbolP)) |
3853 | (void) expression (&exp); | |
3854 | else | |
3855 | (void) deferred_expression (&exp); | |
252b5132 RH |
3856 | |
3857 | if (exp.X_op == O_illegal) | |
0e389e77 | 3858 | as_bad (_("illegal expression")); |
252b5132 | 3859 | else if (exp.X_op == O_absent) |
0e389e77 | 3860 | as_bad (_("missing expression")); |
252b5132 RH |
3861 | else if (exp.X_op == O_big) |
3862 | { | |
3863 | if (exp.X_add_number > 0) | |
0e389e77 | 3864 | as_bad (_("bignum invalid")); |
252b5132 | 3865 | else |
0e389e77 | 3866 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3867 | } |
3868 | else if (exp.X_op == O_subtract | |
9497f5ac | 3869 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3870 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3871 | && (symbol_get_frag (exp.X_add_symbol) |
3872 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3873 | { |
3874 | exp.X_op = O_constant; | |
3875 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3876 | - S_GET_VALUE (exp.X_op_symbol)); | |
3877 | } | |
3878 | ||
be95a9c1 AM |
3879 | if (symbol_section_p (symbolP)) |
3880 | { | |
3881 | as_bad ("attempt to set value of section symbol"); | |
3882 | return; | |
3883 | } | |
be95a9c1 | 3884 | |
252b5132 RH |
3885 | switch (exp.X_op) |
3886 | { | |
3887 | case O_illegal: | |
3888 | case O_absent: | |
3889 | case O_big: | |
3890 | exp.X_add_number = 0; | |
3891 | /* Fall through. */ | |
3892 | case O_constant: | |
3893 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3894 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3895 | set_zero_frag (symbolP); |
252b5132 RH |
3896 | break; |
3897 | ||
3898 | case O_register: | |
97c4f2d9 | 3899 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3900 | if (S_IS_EXTERNAL (symbolP)) |
3901 | { | |
3902 | as_bad ("can't equate global symbol `%s' with register name", | |
3903 | S_GET_NAME (symbolP)); | |
3904 | return; | |
3905 | } | |
97c4f2d9 | 3906 | #endif |
252b5132 RH |
3907 | S_SET_SEGMENT (symbolP, reg_section); |
3908 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3909 | set_zero_frag (symbolP); |
db557034 | 3910 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3911 | break; |
3912 | ||
3913 | case O_symbol: | |
be95a9c1 AM |
3914 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3915 | /* For x=undef+const, create an expression symbol. | |
3916 | For x=x+const, just update x except when x is an undefined symbol | |
3917 | For x=defined+const, evaluate x. */ | |
3918 | if (symbolP == exp.X_add_symbol | |
3919 | && (seg != undefined_section | |
3920 | || !symbol_constant_p (symbolP))) | |
3921 | { | |
3922 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3923 | break; | |
3924 | } | |
9497f5ac | 3925 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3926 | { |
3927 | symbolS *s = exp.X_add_symbol; | |
3928 | ||
60938e80 | 3929 | if (S_IS_COMMON (s)) |
76db0a2e | 3930 | as_bad (_("`%s' can't be equated to common symbol `%s'"), |
60938e80 L |
3931 | S_GET_NAME (symbolP), S_GET_NAME (s)); |
3932 | ||
be95a9c1 AM |
3933 | S_SET_SEGMENT (symbolP, seg); |
3934 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3935 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3936 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3937 | break; |
252b5132 | 3938 | } |
66bd02d3 AM |
3939 | S_SET_SEGMENT (symbolP, undefined_section); |
3940 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 3941 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
3942 | set_zero_frag (symbolP); |
3943 | break; | |
252b5132 RH |
3944 | |
3945 | default: | |
aba4aa7d AM |
3946 | /* The value is some complex expression. */ |
3947 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3948 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3949 | set_zero_frag (symbolP); |
252b5132 RH |
3950 | break; |
3951 | } | |
3952 | } | |
3953 | \f | |
d6415f6c | 3954 | /* cons() |
f0e652b4 | 3955 | |
041ff4dd NC |
3956 | CONStruct more frag of .bytes, or .words etc. |
3957 | Should need_pass_2 be 1 then emit no frag(s). | |
3958 | This understands EXPRESSIONS. | |
f0e652b4 | 3959 | |
041ff4dd | 3960 | Bug (?) |
f0e652b4 | 3961 | |
041ff4dd NC |
3962 | This has a split personality. We use expression() to read the |
3963 | value. We can detect if the value won't fit in a byte or word. | |
3964 | But we can't detect if expression() discarded significant digits | |
3965 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3966 | |
3967 | /* Select a parser for cons expressions. */ | |
3968 | ||
3969 | /* Some targets need to parse the expression in various fancy ways. | |
3970 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3971 | (for example, the HPPA does this). Otherwise, you can define | |
252b5132 RH |
3972 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these |
3973 | are defined, which is the normal case, then only simple expressions | |
3974 | are permitted. */ | |
3975 | ||
abd63a32 | 3976 | #ifdef TC_M68K |
252b5132 | 3977 | static void |
39e6acbd | 3978 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3979 | #endif |
252b5132 RH |
3980 | |
3981 | #ifndef TC_PARSE_CONS_EXPRESSION | |
252b5132 | 3982 | #ifdef REPEAT_CONS_EXPRESSIONS |
62ebcb5c AM |
3983 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3984 | (parse_repeat_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 | 3985 | static void |
39e6acbd | 3986 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3987 | #endif |
3988 | ||
3989 | /* If we haven't gotten one yet, just call expression. */ | |
3990 | #ifndef TC_PARSE_CONS_EXPRESSION | |
62ebcb5c AM |
3991 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3992 | (expression (EXP), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 RH |
3993 | #endif |
3994 | #endif | |
3995 | ||
cdfbf930 | 3996 | void |
b41b1f95 L |
3997 | do_parse_cons_expression (expressionS *exp, |
3998 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 | 3999 | { |
62ebcb5c | 4000 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
cdfbf930 RH |
4001 | } |
4002 | ||
4003 | ||
041ff4dd NC |
4004 | /* Worker to do .byte etc statements. |
4005 | Clobbers input_line_pointer and checks end-of-line. */ | |
4006 | ||
4007 | static void | |
3d540e93 | 4008 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 4009 | int rva) |
252b5132 RH |
4010 | { |
4011 | int c; | |
4012 | expressionS exp; | |
4013 | char *stop = NULL; | |
fb25138b | 4014 | char stopc = 0; |
252b5132 RH |
4015 | |
4016 | #ifdef md_flush_pending_output | |
4017 | md_flush_pending_output (); | |
4018 | #endif | |
4019 | ||
4020 | if (flag_mri) | |
4021 | stop = mri_comment_field (&stopc); | |
4022 | ||
4023 | if (is_it_end_of_statement ()) | |
4024 | { | |
4025 | demand_empty_rest_of_line (); | |
4026 | if (flag_mri) | |
4027 | mri_comment_end (stop, stopc); | |
4028 | return; | |
4029 | } | |
4030 | ||
cc1bc22a AM |
4031 | #ifdef TC_ADDRESS_BYTES |
4032 | if (nbytes == 0) | |
4033 | nbytes = TC_ADDRESS_BYTES (); | |
4034 | #endif | |
4035 | ||
252b5132 RH |
4036 | #ifdef md_cons_align |
4037 | md_cons_align (nbytes); | |
4038 | #endif | |
4039 | ||
4040 | c = 0; | |
4041 | do | |
4042 | { | |
62ebcb5c | 4043 | TC_PARSE_CONS_RETURN_TYPE ret = TC_PARSE_CONS_RETURN_NONE; |
bf7279d5 AM |
4044 | #ifdef TC_CONS_FIX_CHECK |
4045 | fixS **cur_fix = &frchain_now->fix_tail; | |
4046 | ||
4047 | if (*cur_fix != NULL) | |
4048 | cur_fix = &(*cur_fix)->fx_next; | |
4049 | #endif | |
62ebcb5c | 4050 | |
abd63a32 | 4051 | #ifdef TC_M68K |
252b5132 RH |
4052 | if (flag_m68k_mri) |
4053 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
4054 | else | |
abd63a32 | 4055 | #endif |
fa94de6b | 4056 | { |
d02603dc | 4057 | #if 0 |
847d4311 NS |
4058 | if (*input_line_pointer == '"') |
4059 | { | |
4060 | as_bad (_("unexpected `\"' in expression")); | |
4061 | ignore_rest_of_line (); | |
4062 | return; | |
4063 | } | |
d02603dc | 4064 | #endif |
62ebcb5c | 4065 | ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
847d4311 | 4066 | } |
252b5132 RH |
4067 | |
4068 | if (rva) | |
4069 | { | |
4070 | if (exp.X_op == O_symbol) | |
4071 | exp.X_op = O_symbol_rva; | |
4072 | else | |
4073 | as_fatal (_("rva without symbol")); | |
4074 | } | |
62ebcb5c | 4075 | emit_expr_with_reloc (&exp, (unsigned int) nbytes, ret); |
bf7279d5 AM |
4076 | #ifdef TC_CONS_FIX_CHECK |
4077 | TC_CONS_FIX_CHECK (&exp, nbytes, *cur_fix); | |
4078 | #endif | |
252b5132 RH |
4079 | ++c; |
4080 | } | |
4081 | while (*input_line_pointer++ == ','); | |
4082 | ||
4083 | /* In MRI mode, after an odd number of bytes, we must align to an | |
4084 | even word boundary, unless the next instruction is a dc.b, ds.b | |
4085 | or dcb.b. */ | |
4086 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
4087 | mri_pending_align = 1; | |
4088 | ||
041ff4dd | 4089 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
4090 | |
4091 | demand_empty_rest_of_line (); | |
4092 | ||
4093 | if (flag_mri) | |
4094 | mri_comment_end (stop, stopc); | |
4095 | } | |
4096 | ||
252b5132 | 4097 | void |
39e6acbd | 4098 | cons (int size) |
252b5132 RH |
4099 | { |
4100 | cons_worker (size, 0); | |
4101 | } | |
4102 | ||
041ff4dd | 4103 | void |
39e6acbd | 4104 | s_rva (int size) |
252b5132 RH |
4105 | { |
4106 | cons_worker (size, 1); | |
4107 | } | |
4108 | ||
05e9452c AM |
4109 | /* .reloc offset, reloc_name, symbol+addend. */ |
4110 | ||
b38ead21 | 4111 | static void |
05e9452c AM |
4112 | s_reloc (int ignore ATTRIBUTE_UNUSED) |
4113 | { | |
4114 | char *stop = NULL; | |
4115 | char stopc = 0; | |
4116 | expressionS exp; | |
4117 | char *r_name; | |
4118 | int c; | |
4119 | struct reloc_list *reloc; | |
cd0bbe6e TS |
4120 | struct _bfd_rel { const char * name; bfd_reloc_code_real_type code; }; |
4121 | static struct _bfd_rel bfd_relocs[] = | |
4122 | { | |
740bdc67 | 4123 | { "NONE", BFD_RELOC_NONE }, |
cd0bbe6e | 4124 | { "8", BFD_RELOC_8 }, |
740bdc67 AM |
4125 | { "16", BFD_RELOC_16 }, |
4126 | { "32", BFD_RELOC_32 }, | |
4127 | { "64", BFD_RELOC_64 } | |
4128 | }; | |
05e9452c | 4129 | |
8860a416 | 4130 | reloc = XNEW (struct reloc_list); |
05e9452c AM |
4131 | |
4132 | if (flag_mri) | |
4133 | stop = mri_comment_field (&stopc); | |
4134 | ||
4135 | expression (&exp); | |
4136 | switch (exp.X_op) | |
4137 | { | |
4138 | case O_illegal: | |
4139 | case O_absent: | |
4140 | case O_big: | |
4141 | case O_register: | |
4142 | as_bad (_("missing or bad offset expression")); | |
4143 | goto err_out; | |
4144 | case O_constant: | |
4145 | exp.X_add_symbol = section_symbol (now_seg); | |
4146 | exp.X_op = O_symbol; | |
2b0f3761 | 4147 | /* Fallthru */ |
05e9452c AM |
4148 | case O_symbol: |
4149 | if (exp.X_add_number == 0) | |
4150 | { | |
4151 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
4152 | break; | |
4153 | } | |
2b0f3761 | 4154 | /* Fallthru */ |
05e9452c AM |
4155 | default: |
4156 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
4157 | break; | |
4158 | } | |
4159 | ||
4160 | SKIP_WHITESPACE (); | |
4161 | if (*input_line_pointer != ',') | |
4162 | { | |
4163 | as_bad (_("missing reloc type")); | |
4164 | goto err_out; | |
4165 | } | |
4166 | ||
4167 | ++input_line_pointer; | |
4168 | SKIP_WHITESPACE (); | |
d02603dc | 4169 | c = get_symbol_name (& r_name); |
740bdc67 AM |
4170 | if (strncasecmp (r_name, "BFD_RELOC_", 10) == 0) |
4171 | { | |
4172 | unsigned int i; | |
4173 | ||
4174 | for (reloc->u.a.howto = NULL, i = 0; i < ARRAY_SIZE (bfd_relocs); i++) | |
4175 | if (strcasecmp (r_name + 10, bfd_relocs[i].name) == 0) | |
4176 | { | |
4177 | reloc->u.a.howto = bfd_reloc_type_lookup (stdoutput, | |
4178 | bfd_relocs[i].code); | |
4179 | break; | |
4180 | } | |
4181 | } | |
4182 | else | |
4183 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
05e9452c AM |
4184 | *input_line_pointer = c; |
4185 | if (reloc->u.a.howto == NULL) | |
4186 | { | |
4187 | as_bad (_("unrecognized reloc type")); | |
4188 | goto err_out; | |
4189 | } | |
4190 | ||
4191 | exp.X_op = O_absent; | |
d02603dc | 4192 | SKIP_WHITESPACE_AFTER_NAME (); |
05e9452c AM |
4193 | if (*input_line_pointer == ',') |
4194 | { | |
4195 | ++input_line_pointer; | |
c188d0bb | 4196 | expression (&exp); |
05e9452c AM |
4197 | } |
4198 | switch (exp.X_op) | |
4199 | { | |
4200 | case O_illegal: | |
4201 | case O_big: | |
4202 | case O_register: | |
4203 | as_bad (_("bad reloc expression")); | |
4204 | err_out: | |
4205 | ignore_rest_of_line (); | |
4206 | free (reloc); | |
4207 | if (flag_mri) | |
4208 | mri_comment_end (stop, stopc); | |
4209 | return; | |
4210 | case O_absent: | |
4211 | reloc->u.a.sym = NULL; | |
4212 | reloc->u.a.addend = 0; | |
4213 | break; | |
4214 | case O_constant: | |
4215 | reloc->u.a.sym = NULL; | |
4216 | reloc->u.a.addend = exp.X_add_number; | |
4217 | break; | |
4218 | case O_symbol: | |
4219 | reloc->u.a.sym = exp.X_add_symbol; | |
4220 | reloc->u.a.addend = exp.X_add_number; | |
4221 | break; | |
4222 | default: | |
4223 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4224 | reloc->u.a.addend = 0; | |
4225 | break; | |
4226 | } | |
4227 | ||
3b4dbbbf | 4228 | reloc->file = as_where (&reloc->line); |
05e9452c AM |
4229 | reloc->next = reloc_list; |
4230 | reloc_list = reloc; | |
4231 | ||
4232 | demand_empty_rest_of_line (); | |
4233 | if (flag_mri) | |
4234 | mri_comment_end (stop, stopc); | |
4235 | } | |
4236 | ||
252b5132 RH |
4237 | /* Put the contents of expression EXP into the object file using |
4238 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4239 | ||
4240 | void | |
39e6acbd | 4241 | emit_expr (expressionS *exp, unsigned int nbytes) |
62ebcb5c AM |
4242 | { |
4243 | emit_expr_with_reloc (exp, nbytes, TC_PARSE_CONS_RETURN_NONE); | |
4244 | } | |
4245 | ||
4246 | void | |
4247 | emit_expr_with_reloc (expressionS *exp, | |
4248 | unsigned int nbytes, | |
4249 | TC_PARSE_CONS_RETURN_TYPE reloc) | |
252b5132 RH |
4250 | { |
4251 | operatorT op; | |
3d540e93 | 4252 | char *p; |
252b5132 RH |
4253 | valueT extra_digit = 0; |
4254 | ||
4255 | /* Don't do anything if we are going to make another pass. */ | |
4256 | if (need_pass_2) | |
4257 | return; | |
4258 | ||
4bc25101 | 4259 | frag_grow (nbytes); |
ed7d5d1a | 4260 | dot_value = frag_now_fix (); |
8e723a10 | 4261 | dot_frag = frag_now; |
ed7d5d1a | 4262 | |
252b5132 RH |
4263 | #ifndef NO_LISTING |
4264 | #ifdef OBJ_ELF | |
4265 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4266 | appear as a four byte positive constant in the .line section, | |
4267 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4268 | { | |
4269 | static int dwarf_line = -1; | |
4270 | ||
4271 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4272 | dwarf_line = -1; | |
4273 | else if (dwarf_line >= 0 | |
4274 | && nbytes == 2 | |
4275 | && exp->X_op == O_constant | |
4276 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4277 | listing_source_line ((unsigned int) dwarf_line); | |
4278 | else if (nbytes == 4 | |
4279 | && exp->X_op == O_constant | |
4280 | && exp->X_add_number >= 0) | |
4281 | dwarf_line = exp->X_add_number; | |
4282 | else | |
4283 | dwarf_line = -1; | |
4284 | } | |
4285 | ||
4286 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4287 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4288 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4289 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4290 | file. We look for that case here. */ | |
4291 | { | |
4292 | static int dwarf_file = 0; | |
4293 | ||
4294 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4295 | dwarf_file = 0; | |
4296 | else if (dwarf_file == 0 | |
4297 | && nbytes == 2 | |
4298 | && exp->X_op == O_constant | |
4299 | && exp->X_add_number == 0x11) | |
4300 | dwarf_file = 1; | |
4301 | else if (dwarf_file == 1 | |
4302 | && nbytes == 2 | |
4303 | && exp->X_op == O_constant | |
4304 | && exp->X_add_number == 0x12) | |
4305 | dwarf_file = 2; | |
4306 | else if (dwarf_file == 2 | |
4307 | && nbytes == 4) | |
4308 | dwarf_file = 3; | |
4309 | else if (dwarf_file == 3 | |
4310 | && nbytes == 2 | |
4311 | && exp->X_op == O_constant | |
4312 | && exp->X_add_number == 0x38) | |
4313 | dwarf_file = 4; | |
4314 | else | |
4315 | dwarf_file = 0; | |
4316 | ||
4317 | /* The variable dwarf_file_string tells stringer that the string | |
4318 | may be the name of the source file. */ | |
4319 | if (dwarf_file == 4) | |
4320 | dwarf_file_string = 1; | |
4321 | else | |
4322 | dwarf_file_string = 0; | |
4323 | } | |
4324 | #endif | |
4325 | #endif | |
4326 | ||
4327 | if (check_eh_frame (exp, &nbytes)) | |
4328 | return; | |
4329 | ||
4330 | op = exp->X_op; | |
4331 | ||
252b5132 RH |
4332 | /* Handle a negative bignum. */ |
4333 | if (op == O_uminus | |
4334 | && exp->X_add_number == 0 | |
2b47531b ILT |
4335 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4336 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4337 | { |
4338 | int i; | |
4339 | unsigned long carry; | |
4340 | ||
2b47531b | 4341 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4342 | |
4343 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4344 | carry = 1; | |
4345 | for (i = 0; i < exp->X_add_number; i++) | |
4346 | { | |
4347 | unsigned long next; | |
4348 | ||
041ff4dd | 4349 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4350 | & LITTLENUM_MASK) |
4351 | + carry); | |
4352 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4353 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4354 | } | |
4355 | ||
4356 | /* We can ignore any carry out, because it will be handled by | |
4357 | extra_digit if it is needed. */ | |
4358 | ||
4359 | extra_digit = (valueT) -1; | |
4360 | op = O_big; | |
4361 | } | |
4362 | ||
4363 | if (op == O_absent || op == O_illegal) | |
4364 | { | |
4365 | as_warn (_("zero assumed for missing expression")); | |
4366 | exp->X_add_number = 0; | |
4367 | op = O_constant; | |
4368 | } | |
4369 | else if (op == O_big && exp->X_add_number <= 0) | |
4370 | { | |
0e389e77 | 4371 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4372 | exp->X_add_number = 0; |
4373 | op = O_constant; | |
4374 | } | |
4375 | else if (op == O_register) | |
4376 | { | |
4377 | as_warn (_("register value used as expression")); | |
4378 | op = O_constant; | |
4379 | } | |
4380 | ||
ec9ab52c JB |
4381 | /* Allow `.word 0' in the absolute section. */ |
4382 | if (now_seg == absolute_section) | |
4383 | { | |
4384 | if (op != O_constant || exp->X_add_number != 0) | |
4385 | as_bad (_("attempt to store value in absolute section")); | |
4386 | abs_section_offset += nbytes; | |
4387 | return; | |
4388 | } | |
4389 | ||
4390 | /* Allow `.word 0' in BSS style sections. */ | |
4391 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
4392 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
4393 | segment_name (now_seg)); | |
4394 | ||
252b5132 RH |
4395 | p = frag_more ((int) nbytes); |
4396 | ||
62ebcb5c AM |
4397 | if (reloc != TC_PARSE_CONS_RETURN_NONE) |
4398 | { | |
4399 | emit_expr_fix (exp, nbytes, frag_now, p, reloc); | |
4400 | return; | |
4401 | } | |
4402 | ||
252b5132 RH |
4403 | #ifndef WORKING_DOT_WORD |
4404 | /* If we have the difference of two symbols in a word, save it on | |
4405 | the broken_words list. See the code in write.c. */ | |
4406 | if (op == O_subtract && nbytes == 2) | |
4407 | { | |
4408 | struct broken_word *x; | |
4409 | ||
8860a416 | 4410 | x = XNEW (struct broken_word); |
252b5132 RH |
4411 | x->next_broken_word = broken_words; |
4412 | broken_words = x; | |
4413 | x->seg = now_seg; | |
4414 | x->subseg = now_subseg; | |
4415 | x->frag = frag_now; | |
4416 | x->word_goes_here = p; | |
4417 | x->dispfrag = 0; | |
4418 | x->add = exp->X_add_symbol; | |
4419 | x->sub = exp->X_op_symbol; | |
4420 | x->addnum = exp->X_add_number; | |
4421 | x->added = 0; | |
dc59a897 | 4422 | x->use_jump = 0; |
252b5132 RH |
4423 | new_broken_words++; |
4424 | return; | |
4425 | } | |
4426 | #endif | |
4427 | ||
4428 | /* If we have an integer, but the number of bytes is too large to | |
4429 | pass to md_number_to_chars, handle it as a bignum. */ | |
4430 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4431 | { | |
e5604d79 | 4432 | extra_digit = exp->X_unsigned ? 0 : -1; |
956a6ba3 | 4433 | convert_to_bignum (exp, !exp->X_unsigned); |
e5604d79 | 4434 | op = O_big; |
252b5132 RH |
4435 | } |
4436 | ||
4437 | if (op == O_constant) | |
4438 | { | |
3d540e93 NC |
4439 | valueT get; |
4440 | valueT use; | |
4441 | valueT mask; | |
252b5132 | 4442 | valueT hibit; |
3d540e93 | 4443 | valueT unmask; |
252b5132 RH |
4444 | |
4445 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4446 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4447 | if (nbytes >= sizeof (valueT)) |
4448 | { | |
4449 | mask = 0; | |
4450 | if (nbytes > sizeof (valueT)) | |
4451 | hibit = 0; | |
4452 | else | |
4453 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4454 | } | |
4455 | else | |
4456 | { | |
041ff4dd | 4457 | /* Don't store these bits. */ |
252b5132 RH |
4458 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4459 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4460 | } | |
4461 | ||
041ff4dd | 4462 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4463 | |
4464 | #ifdef NEVER | |
4465 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4466 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4467 | #endif |
4468 | ||
4469 | get = exp->X_add_number; | |
4470 | use = get & unmask; | |
4471 | if ((get & mask) != 0 | |
4472 | && ((get & mask) != mask | |
4473 | || (get & hibit) == 0)) | |
5f2b6bc9 NC |
4474 | { |
4475 | /* Leading bits contain both 0s & 1s. */ | |
b6ac5419 | 4476 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4477 | #ifndef __MSVCRT__ |
5c612369 NC |
4478 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4479 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4480 | #else |
4481 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4482 | (unsigned long long) get, (unsigned long long) use); | |
4483 | #endif | |
b6ac5419 AM |
4484 | #else |
4485 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4486 | (unsigned long) get, (unsigned long) use); | |
4487 | #endif | |
252b5132 | 4488 | } |
041ff4dd | 4489 | /* Put bytes in right order. */ |
252b5132 RH |
4490 | md_number_to_chars (p, use, (int) nbytes); |
4491 | } | |
4492 | else if (op == O_big) | |
4493 | { | |
4494 | unsigned int size; | |
4495 | LITTLENUM_TYPE *nums; | |
4496 | ||
252b5132 RH |
4497 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4498 | if (nbytes < size) | |
4499 | { | |
93d90f46 | 4500 | int i = nbytes / CHARS_PER_LITTLENUM; |
5f2b6bc9 | 4501 | |
93d90f46 AM |
4502 | if (i != 0) |
4503 | { | |
4504 | LITTLENUM_TYPE sign = 0; | |
4505 | if ((generic_bignum[--i] | |
4506 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4507 | sign = ~(LITTLENUM_TYPE) 0; | |
5f2b6bc9 | 4508 | |
93d90f46 AM |
4509 | while (++i < exp->X_add_number) |
4510 | if (generic_bignum[i] != sign) | |
4511 | break; | |
4512 | } | |
5f2b6bc9 NC |
4513 | else if (nbytes == 1) |
4514 | { | |
4515 | /* We have nbytes == 1 and CHARS_PER_LITTLENUM == 2 (probably). | |
4516 | Check that bits 8.. of generic_bignum[0] match bit 7 | |
4517 | and that they match all of generic_bignum[1..exp->X_add_number]. */ | |
4518 | LITTLENUM_TYPE sign = (generic_bignum[0] & (1 << 7)) ? -1 : 0; | |
4519 | LITTLENUM_TYPE himask = LITTLENUM_MASK & ~ 0xFF; | |
4520 | ||
4521 | if ((generic_bignum[0] & himask) == (sign & himask)) | |
4522 | { | |
4523 | while (++i < exp->X_add_number) | |
4524 | if (generic_bignum[i] != sign) | |
4525 | break; | |
4526 | } | |
4527 | } | |
4528 | ||
93d90f46 | 4529 | if (i < exp->X_add_number) |
992a06ee AM |
4530 | as_warn (ngettext ("bignum truncated to %d byte", |
4531 | "bignum truncated to %d bytes", | |
4532 | nbytes), | |
4533 | nbytes); | |
252b5132 RH |
4534 | size = nbytes; |
4535 | } | |
4536 | ||
93d90f46 AM |
4537 | if (nbytes == 1) |
4538 | { | |
4539 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4540 | return; | |
4541 | } | |
4542 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4543 | ||
252b5132 RH |
4544 | if (target_big_endian) |
4545 | { | |
4546 | while (nbytes > size) | |
4547 | { | |
4548 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4549 | nbytes -= CHARS_PER_LITTLENUM; | |
4550 | p += CHARS_PER_LITTLENUM; | |
4551 | } | |
4552 | ||
4553 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4554 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4555 | { |
4556 | --nums; | |
4557 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4558 | size -= CHARS_PER_LITTLENUM; | |
4559 | p += CHARS_PER_LITTLENUM; | |
4560 | } | |
4561 | } | |
4562 | else | |
4563 | { | |
4564 | nums = generic_bignum; | |
ceac3f62 | 4565 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4566 | { |
4567 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4568 | ++nums; | |
4569 | size -= CHARS_PER_LITTLENUM; | |
4570 | p += CHARS_PER_LITTLENUM; | |
4571 | nbytes -= CHARS_PER_LITTLENUM; | |
4572 | } | |
4573 | ||
ceac3f62 | 4574 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4575 | { |
4576 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4577 | nbytes -= CHARS_PER_LITTLENUM; | |
4578 | p += CHARS_PER_LITTLENUM; | |
4579 | } | |
4580 | } | |
4581 | } | |
4582 | else | |
62ebcb5c | 4583 | emit_expr_fix (exp, nbytes, frag_now, p, TC_PARSE_CONS_RETURN_NONE); |
7ddd14de BW |
4584 | } |
4585 | ||
4586 | void | |
62ebcb5c | 4587 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p, |
00c06fdc | 4588 | TC_PARSE_CONS_RETURN_TYPE r ATTRIBUTE_UNUSED) |
7ddd14de | 4589 | { |
62ebcb5c AM |
4590 | int offset = 0; |
4591 | unsigned int size = nbytes; | |
4592 | ||
4593 | memset (p, 0, size); | |
252b5132 | 4594 | |
7ddd14de | 4595 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4596 | |
252b5132 | 4597 | #ifdef TC_CONS_FIX_NEW |
62ebcb5c | 4598 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal + offset, size, exp, r); |
252b5132 | 4599 | #else |
62ebcb5c AM |
4600 | if (r != TC_PARSE_CONS_RETURN_NONE) |
4601 | { | |
4602 | reloc_howto_type *reloc_howto; | |
252b5132 | 4603 | |
62ebcb5c AM |
4604 | reloc_howto = bfd_reloc_type_lookup (stdoutput, r); |
4605 | size = bfd_get_reloc_size (reloc_howto); | |
4606 | ||
4607 | if (size > nbytes) | |
4608 | { | |
992a06ee AM |
4609 | as_bad (ngettext ("%s relocations do not fit in %u byte", |
4610 | "%s relocations do not fit in %u bytes", | |
4611 | nbytes), | |
62ebcb5c AM |
4612 | reloc_howto->name, nbytes); |
4613 | return; | |
4614 | } | |
4615 | else if (target_big_endian) | |
4616 | offset = nbytes - size; | |
4617 | } | |
4618 | else | |
4619 | switch (size) | |
7ddd14de BW |
4620 | { |
4621 | case 1: | |
4622 | r = BFD_RELOC_8; | |
4623 | break; | |
4624 | case 2: | |
4625 | r = BFD_RELOC_16; | |
4626 | break; | |
d4f4f3fb AM |
4627 | case 3: |
4628 | r = BFD_RELOC_24; | |
4629 | break; | |
7ddd14de BW |
4630 | case 4: |
4631 | r = BFD_RELOC_32; | |
4632 | break; | |
4633 | case 8: | |
4634 | r = BFD_RELOC_64; | |
4635 | break; | |
4636 | default: | |
62ebcb5c AM |
4637 | as_bad (_("unsupported BFD relocation size %u"), size); |
4638 | return; | |
252b5132 | 4639 | } |
62ebcb5c AM |
4640 | fix_new_exp (frag, p - frag->fr_literal + offset, size, |
4641 | exp, 0, r); | |
252b5132 | 4642 | #endif |
252b5132 RH |
4643 | } |
4644 | \f | |
252b5132 RH |
4645 | /* Handle an MRI style string expression. */ |
4646 | ||
abd63a32 | 4647 | #ifdef TC_M68K |
252b5132 | 4648 | static void |
62ebcb5c | 4649 | parse_mri_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4650 | { |
4651 | if (*input_line_pointer != '\'' | |
4652 | && (input_line_pointer[1] != '\'' | |
4653 | || (*input_line_pointer != 'A' | |
4654 | && *input_line_pointer != 'E'))) | |
1e539319 | 4655 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
252b5132 RH |
4656 | else |
4657 | { | |
4658 | unsigned int scan; | |
4659 | unsigned int result = 0; | |
4660 | ||
4661 | /* An MRI style string. Cut into as many bytes as will fit into | |
4662 | a nbyte chunk, left justify if necessary, and separate with | |
4663 | commas so we can try again later. */ | |
4664 | if (*input_line_pointer == 'A') | |
4665 | ++input_line_pointer; | |
4666 | else if (*input_line_pointer == 'E') | |
4667 | { | |
4668 | as_bad (_("EBCDIC constants are not supported")); | |
4669 | ++input_line_pointer; | |
4670 | } | |
4671 | ||
4672 | input_line_pointer++; | |
4673 | for (scan = 0; scan < nbytes; scan++) | |
4674 | { | |
4675 | if (*input_line_pointer == '\'') | |
4676 | { | |
4677 | if (input_line_pointer[1] == '\'') | |
4678 | { | |
4679 | input_line_pointer++; | |
4680 | } | |
4681 | else | |
4682 | break; | |
4683 | } | |
4684 | result = (result << 8) | (*input_line_pointer++); | |
4685 | } | |
4686 | ||
041ff4dd | 4687 | /* Left justify. */ |
252b5132 RH |
4688 | while (scan < nbytes) |
4689 | { | |
4690 | result <<= 8; | |
4691 | scan++; | |
4692 | } | |
f0e652b4 | 4693 | |
041ff4dd | 4694 | /* Create correct expression. */ |
252b5132 RH |
4695 | exp->X_op = O_constant; |
4696 | exp->X_add_number = result; | |
f0e652b4 | 4697 | |
041ff4dd | 4698 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4699 | if (input_line_pointer[0] != '\'' || |
4700 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4701 | { | |
4702 | input_line_pointer -= 2; | |
4703 | input_line_pointer[0] = ','; | |
4704 | input_line_pointer[1] = '\''; | |
4705 | } | |
4706 | else | |
4707 | input_line_pointer++; | |
4708 | } | |
4709 | } | |
abd63a32 | 4710 | #endif /* TC_M68K */ |
252b5132 RH |
4711 | \f |
4712 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4713 | ||
4714 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4715 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4716 | object file COUNT times. | |
4717 | ||
4718 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4719 | ||
4720 | static void | |
e046cf80 | 4721 | parse_repeat_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4722 | { |
4723 | expressionS count; | |
3d540e93 | 4724 | int i; |
252b5132 RH |
4725 | |
4726 | expression (exp); | |
4727 | ||
4728 | if (*input_line_pointer != ':') | |
4729 | { | |
4730 | /* No repeat count. */ | |
4731 | return; | |
4732 | } | |
4733 | ||
4734 | ++input_line_pointer; | |
4735 | expression (&count); | |
4736 | if (count.X_op != O_constant | |
4737 | || count.X_add_number <= 0) | |
4738 | { | |
0e389e77 | 4739 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4740 | return; |
4741 | } | |
4742 | ||
4743 | /* The cons function is going to output this expression once. So we | |
4744 | output it count - 1 times. */ | |
4745 | for (i = count.X_add_number - 1; i > 0; i--) | |
4746 | emit_expr (exp, nbytes); | |
4747 | } | |
4748 | ||
4749 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4750 | \f | |
4751 | /* Parse a floating point number represented as a hex constant. This | |
4752 | permits users to specify the exact bits they want in the floating | |
4753 | point number. */ | |
4754 | ||
4755 | static int | |
39e6acbd | 4756 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4757 | { |
4758 | int length; | |
4759 | int i; | |
4760 | ||
4761 | switch (float_type) | |
4762 | { | |
4763 | case 'f': | |
4764 | case 'F': | |
4765 | case 's': | |
4766 | case 'S': | |
4767 | length = 4; | |
4768 | break; | |
4769 | ||
4770 | case 'd': | |
4771 | case 'D': | |
4772 | case 'r': | |
4773 | case 'R': | |
4774 | length = 8; | |
4775 | break; | |
4776 | ||
4777 | case 'x': | |
4778 | case 'X': | |
4779 | length = 12; | |
4780 | break; | |
4781 | ||
4782 | case 'p': | |
4783 | case 'P': | |
4784 | length = 12; | |
4785 | break; | |
4786 | ||
4787 | default: | |
0e389e77 | 4788 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4789 | return -1; |
4790 | } | |
4791 | ||
4792 | /* It would be nice if we could go through expression to parse the | |
4793 | hex constant, but if we get a bignum it's a pain to sort it into | |
4794 | the buffer correctly. */ | |
4795 | i = 0; | |
4796 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4797 | { | |
4798 | int d; | |
4799 | ||
4800 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4801 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4802 | if (*input_line_pointer == '_') |
4803 | { | |
4804 | ++input_line_pointer; | |
4805 | continue; | |
4806 | } | |
4807 | ||
4808 | if (i >= length) | |
4809 | { | |
0e389e77 | 4810 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4811 | return -1; |
4812 | } | |
4813 | d = hex_value (*input_line_pointer) << 4; | |
4814 | ++input_line_pointer; | |
4815 | while (*input_line_pointer == '_') | |
4816 | ++input_line_pointer; | |
4817 | if (hex_p (*input_line_pointer)) | |
4818 | { | |
4819 | d += hex_value (*input_line_pointer); | |
4820 | ++input_line_pointer; | |
4821 | } | |
4822 | if (target_big_endian) | |
4823 | bytes[i] = d; | |
4824 | else | |
4825 | bytes[length - i - 1] = d; | |
4826 | ++i; | |
4827 | } | |
4828 | ||
4829 | if (i < length) | |
4830 | { | |
4831 | if (target_big_endian) | |
4832 | memset (bytes + i, 0, length - i); | |
4833 | else | |
4834 | memset (bytes, 0, length - i); | |
4835 | } | |
4836 | ||
4837 | return length; | |
4838 | } | |
4839 | ||
d6415f6c | 4840 | /* float_cons() |
f0e652b4 | 4841 | |
041ff4dd NC |
4842 | CONStruct some more frag chars of .floats .ffloats etc. |
4843 | Makes 0 or more new frags. | |
4844 | If need_pass_2 == 1, no frags are emitted. | |
4845 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4846 | |
041ff4dd NC |
4847 | A floating constant is defined by atof_generic(), except it is preceded |
4848 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4849 | reading, I decided to be incompatible. This always tries to give you | |
4850 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4851 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4852 | a choice of 2 flavours of noise according to which of 2 floating-point |
4853 | scanners you directed AS to use. | |
f0e652b4 | 4854 | |
041ff4dd | 4855 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4856 | |
4857 | void | |
39e6acbd | 4858 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4859 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4860 | { |
3d540e93 | 4861 | char *p; |
041ff4dd | 4862 | int length; /* Number of chars in an object. */ |
6d4af3c2 | 4863 | const char *err; /* Error from scanning floating literal. */ |
252b5132 RH |
4864 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4865 | ||
4866 | if (is_it_end_of_statement ()) | |
4867 | { | |
4868 | demand_empty_rest_of_line (); | |
4869 | return; | |
4870 | } | |
4871 | ||
ec9ab52c JB |
4872 | if (now_seg == absolute_section) |
4873 | { | |
4874 | as_bad (_("attempt to store float in absolute section")); | |
4875 | ignore_rest_of_line (); | |
4876 | return; | |
4877 | } | |
4878 | ||
4879 | if (in_bss ()) | |
4880 | { | |
4881 | as_bad (_("attempt to store float in section `%s'"), | |
4882 | segment_name (now_seg)); | |
4883 | ignore_rest_of_line (); | |
4884 | return; | |
4885 | } | |
4886 | ||
252b5132 RH |
4887 | #ifdef md_flush_pending_output |
4888 | md_flush_pending_output (); | |
4889 | #endif | |
4890 | ||
cc3f603a JM |
4891 | #ifdef md_cons_align |
4892 | md_cons_align (1); | |
4893 | #endif | |
4894 | ||
252b5132 RH |
4895 | do |
4896 | { | |
041ff4dd | 4897 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4898 | SKIP_WHITESPACE (); |
4899 | ||
4900 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4901 | letter is legal. Someone may invent a "z" format and this routine |
4902 | has no use for such information. Lusers beware: you get | |
4903 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4904 | if (input_line_pointer[0] == '0' |
3882b010 | 4905 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4906 | input_line_pointer += 2; |
4907 | ||
4908 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4909 | point with the exact digits specified. */ |
252b5132 RH |
4910 | if (input_line_pointer[0] == ':') |
4911 | { | |
4912 | ++input_line_pointer; | |
4913 | length = hex_float (float_type, temp); | |
4914 | if (length < 0) | |
4915 | { | |
4916 | ignore_rest_of_line (); | |
4917 | return; | |
4918 | } | |
4919 | } | |
4920 | else | |
4921 | { | |
4922 | err = md_atof (float_type, temp, &length); | |
4923 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4924 | know (err != NULL || length > 0); |
252b5132 RH |
4925 | if (err) |
4926 | { | |
0e389e77 | 4927 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4928 | ignore_rest_of_line (); |
4929 | return; | |
4930 | } | |
4931 | } | |
4932 | ||
4933 | if (!need_pass_2) | |
4934 | { | |
4935 | int count; | |
4936 | ||
4937 | count = 1; | |
4938 | ||
4939 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4940 | if (*input_line_pointer == ':') | |
4941 | { | |
4942 | expressionS count_exp; | |
4943 | ||
4944 | ++input_line_pointer; | |
4945 | expression (&count_exp); | |
f0e652b4 | 4946 | |
252b5132 RH |
4947 | if (count_exp.X_op != O_constant |
4948 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4949 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4950 | else |
4951 | count = count_exp.X_add_number; | |
4952 | } | |
4953 | #endif | |
4954 | ||
4955 | while (--count >= 0) | |
4956 | { | |
4957 | p = frag_more (length); | |
4958 | memcpy (p, temp, (unsigned int) length); | |
4959 | } | |
4960 | } | |
4961 | SKIP_WHITESPACE (); | |
4962 | } | |
4963 | while (*input_line_pointer++ == ','); | |
4964 | ||
041ff4dd NC |
4965 | /* Put terminator back into stream. */ |
4966 | --input_line_pointer; | |
252b5132 | 4967 | demand_empty_rest_of_line (); |
041ff4dd | 4968 | } |
252b5132 | 4969 | \f |
9136aa49 | 4970 | /* LEB128 Encoding. |
252b5132 | 4971 | |
9136aa49 DG |
4972 | Note - we are using the DWARF standard's definition of LEB128 encoding |
4973 | where each 7-bit value is a stored in a byte, *not* an octet. This | |
4974 | means that on targets where a byte contains multiple octets there is | |
4975 | a *huge waste of space*. (This also means that we do not have to | |
4976 | have special versions of these functions for when OCTETS_PER_BYTE_POWER | |
4977 | is non-zero). | |
4978 | ||
4979 | If the 7-bit values were to be packed into N-bit bytes (where N > 8) | |
4980 | we would then have to consider whether multiple, successive LEB128 | |
4981 | values should be packed into the bytes without padding (bad idea) or | |
4982 | whether each LEB128 number is padded out to a whole number of bytes. | |
4983 | Plus you have to decide on the endianness of packing octets into a | |
4984 | byte. */ | |
4985 | ||
4986 | /* Return the size of a LEB128 value in bytes. */ | |
4987 | ||
4988 | static inline unsigned int | |
39e6acbd | 4989 | sizeof_sleb128 (offsetT value) |
252b5132 | 4990 | { |
3d540e93 NC |
4991 | int size = 0; |
4992 | unsigned byte; | |
252b5132 RH |
4993 | |
4994 | do | |
4995 | { | |
4996 | byte = (value & 0x7f); | |
4997 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4998 | Fortunately, we can structure things so that the extra work reduces | |
4999 | to a noop on systems that do things "properly". */ | |
5000 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5001 | size += 1; | |
5002 | } | |
5003 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
5004 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5005 | ||
5006 | return size; | |
5007 | } | |
5008 | ||
9136aa49 | 5009 | static inline unsigned int |
39e6acbd | 5010 | sizeof_uleb128 (valueT value) |
252b5132 | 5011 | { |
3d540e93 | 5012 | int size = 0; |
252b5132 RH |
5013 | |
5014 | do | |
5015 | { | |
252b5132 RH |
5016 | value >>= 7; |
5017 | size += 1; | |
5018 | } | |
5019 | while (value != 0); | |
5020 | ||
5021 | return size; | |
5022 | } | |
5023 | ||
9136aa49 | 5024 | unsigned int |
39e6acbd | 5025 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
5026 | { |
5027 | if (sign) | |
5028 | return sizeof_sleb128 ((offsetT) value); | |
5029 | else | |
5030 | return sizeof_uleb128 (value); | |
5031 | } | |
5032 | ||
9136aa49 | 5033 | /* Output a LEB128 value. Returns the number of bytes used. */ |
252b5132 | 5034 | |
9136aa49 | 5035 | static inline unsigned int |
39e6acbd | 5036 | output_sleb128 (char *p, offsetT value) |
252b5132 | 5037 | { |
3d540e93 NC |
5038 | char *orig = p; |
5039 | int more; | |
252b5132 RH |
5040 | |
5041 | do | |
5042 | { | |
5043 | unsigned byte = (value & 0x7f); | |
5044 | ||
5045 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5046 | Fortunately, we can structure things so that the extra work reduces | |
5047 | to a noop on systems that do things "properly". */ | |
5048 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5049 | ||
5050 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
5051 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5052 | if (more) | |
5053 | byte |= 0x80; | |
5054 | ||
5055 | *p++ = byte; | |
5056 | } | |
5057 | while (more); | |
5058 | ||
5059 | return p - orig; | |
5060 | } | |
5061 | ||
9136aa49 | 5062 | static inline unsigned int |
39e6acbd | 5063 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
5064 | { |
5065 | char *orig = p; | |
5066 | ||
5067 | do | |
5068 | { | |
5069 | unsigned byte = (value & 0x7f); | |
9136aa49 | 5070 | |
252b5132 RH |
5071 | value >>= 7; |
5072 | if (value != 0) | |
5073 | /* More bytes to follow. */ | |
5074 | byte |= 0x80; | |
5075 | ||
5076 | *p++ = byte; | |
5077 | } | |
5078 | while (value != 0); | |
5079 | ||
5080 | return p - orig; | |
5081 | } | |
5082 | ||
9136aa49 | 5083 | unsigned int |
39e6acbd | 5084 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
5085 | { |
5086 | if (sign) | |
5087 | return output_sleb128 (p, (offsetT) value); | |
5088 | else | |
5089 | return output_uleb128 (p, value); | |
5090 | } | |
5091 | ||
5092 | /* Do the same for bignums. We combine sizeof with output here in that | |
5093 | we don't output for NULL values of P. It isn't really as critical as | |
9136aa49 DG |
5094 | for "normal" values that this be streamlined. Returns the number of |
5095 | bytes used. */ | |
252b5132 | 5096 | |
9136aa49 DG |
5097 | static inline unsigned int |
5098 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5099 | { |
5100 | char *orig = p; | |
5101 | valueT val = 0; | |
5102 | int loaded = 0; | |
5103 | unsigned byte; | |
5104 | ||
5105 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
5106 | while (size > 1 |
5107 | && bignum[size - 1] == LITTLENUM_MASK | |
5108 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
5109 | size--; |
5110 | ||
5111 | do | |
5112 | { | |
e5604d79 RS |
5113 | /* OR in the next part of the littlenum. */ |
5114 | val |= (*bignum << loaded); | |
5115 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
5116 | size--; | |
5117 | bignum++; | |
5118 | ||
5119 | /* Add bytes until there are less than 7 bits left in VAL | |
5120 | or until every non-sign bit has been written. */ | |
5121 | do | |
252b5132 | 5122 | { |
e5604d79 RS |
5123 | byte = val & 0x7f; |
5124 | loaded -= 7; | |
5125 | val >>= 7; | |
5126 | if (size > 0 | |
5127 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 5128 | byte |= 0x80; |
e5604d79 RS |
5129 | |
5130 | if (orig) | |
5131 | *p = byte; | |
5132 | p++; | |
252b5132 | 5133 | } |
e5604d79 RS |
5134 | while ((byte & 0x80) != 0 && loaded >= 7); |
5135 | } | |
5136 | while (size > 0); | |
252b5132 | 5137 | |
e5604d79 RS |
5138 | /* Mop up any left-over bits (of which there will be less than 7). */ |
5139 | if ((byte & 0x80) != 0) | |
5140 | { | |
5141 | /* Sign-extend VAL. */ | |
5142 | if (val & (1 << (loaded - 1))) | |
29798047 | 5143 | val |= ~0U << loaded; |
252b5132 | 5144 | if (orig) |
e5604d79 | 5145 | *p = val & 0x7f; |
252b5132 RH |
5146 | p++; |
5147 | } | |
252b5132 RH |
5148 | |
5149 | return p - orig; | |
5150 | } | |
5151 | ||
9136aa49 DG |
5152 | static inline unsigned int |
5153 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5154 | { |
5155 | char *orig = p; | |
5156 | valueT val = 0; | |
5157 | int loaded = 0; | |
5158 | unsigned byte; | |
5159 | ||
5160 | /* Strip leading zeros off the bignum. */ | |
5161 | /* XXX: Is this needed? */ | |
041ff4dd | 5162 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
5163 | size--; |
5164 | ||
5165 | do | |
5166 | { | |
5167 | if (loaded < 7 && size > 0) | |
5168 | { | |
5169 | val |= (*bignum << loaded); | |
5170 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5171 | size--; | |
5172 | bignum++; | |
5173 | } | |
5174 | ||
5175 | byte = val & 0x7f; | |
5176 | loaded -= 7; | |
5177 | val >>= 7; | |
5178 | ||
5179 | if (size > 0 || val) | |
5180 | byte |= 0x80; | |
5181 | ||
5182 | if (orig) | |
5183 | *p = byte; | |
5184 | p++; | |
5185 | } | |
5186 | while (byte & 0x80); | |
5187 | ||
5188 | return p - orig; | |
5189 | } | |
5190 | ||
9136aa49 DG |
5191 | static unsigned int |
5192 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size, int sign) | |
252b5132 RH |
5193 | { |
5194 | if (sign) | |
5195 | return output_big_sleb128 (p, bignum, size); | |
5196 | else | |
5197 | return output_big_uleb128 (p, bignum, size); | |
5198 | } | |
5199 | ||
5200 | /* Generate the appropriate fragments for a given expression to emit a | |
9a724e7b | 5201 | leb128 value. SIGN is 1 for sleb, 0 for uleb. */ |
252b5132 | 5202 | |
6b9a135d | 5203 | void |
39e6acbd | 5204 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5205 | { |
5206 | operatorT op = exp->X_op; | |
b7712f8d | 5207 | unsigned int nbytes; |
252b5132 RH |
5208 | |
5209 | if (op == O_absent || op == O_illegal) | |
5210 | { | |
5211 | as_warn (_("zero assumed for missing expression")); | |
5212 | exp->X_add_number = 0; | |
5213 | op = O_constant; | |
5214 | } | |
5215 | else if (op == O_big && exp->X_add_number <= 0) | |
5216 | { | |
0e389e77 | 5217 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5218 | exp->X_add_number = 0; |
5219 | op = O_constant; | |
5220 | } | |
5221 | else if (op == O_register) | |
5222 | { | |
5223 | as_warn (_("register value used as expression")); | |
5224 | op = O_constant; | |
5225 | } | |
e5604d79 RS |
5226 | else if (op == O_constant |
5227 | && sign | |
956a6ba3 | 5228 | && (exp->X_add_number < 0) == !exp->X_extrabit) |
e5604d79 RS |
5229 | { |
5230 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5231 | doesn't reflect the sign of the original value. Convert EXP | |
5232 | to a correctly-extended bignum instead. */ | |
956a6ba3 | 5233 | convert_to_bignum (exp, exp->X_extrabit); |
e5604d79 RS |
5234 | op = O_big; |
5235 | } | |
252b5132 | 5236 | |
ec9ab52c JB |
5237 | if (now_seg == absolute_section) |
5238 | { | |
5239 | if (op != O_constant || exp->X_add_number != 0) | |
5240 | as_bad (_("attempt to store value in absolute section")); | |
5241 | abs_section_offset++; | |
5242 | return; | |
5243 | } | |
5244 | ||
5245 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
5246 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
5247 | segment_name (now_seg)); | |
5248 | ||
67a659f6 RH |
5249 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5250 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5251 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5252 | if (check_eh_frame (exp, &nbytes)) |
5253 | abort (); | |
5254 | ||
371b7465 RH |
5255 | /* Let the backend know that subsequent data may be byte aligned. */ |
5256 | #ifdef md_cons_align | |
5257 | md_cons_align (1); | |
5258 | #endif | |
5259 | ||
252b5132 RH |
5260 | if (op == O_constant) |
5261 | { | |
5262 | /* If we've got a constant, emit the thing directly right now. */ | |
5263 | ||
5264 | valueT value = exp->X_add_number; | |
9136aa49 | 5265 | unsigned int size; |
252b5132 RH |
5266 | char *p; |
5267 | ||
5268 | size = sizeof_leb128 (value, sign); | |
5269 | p = frag_more (size); | |
9136aa49 DG |
5270 | if (output_leb128 (p, value, sign) > size) |
5271 | abort (); | |
252b5132 RH |
5272 | } |
5273 | else if (op == O_big) | |
5274 | { | |
5275 | /* O_big is a different sort of constant. */ | |
74def31d | 5276 | int nbr_digits = exp->X_add_number; |
9136aa49 | 5277 | unsigned int size; |
252b5132 RH |
5278 | char *p; |
5279 | ||
74def31d TG |
5280 | /* If the leading littenum is 0xffff, prepend a 0 to avoid confusion with |
5281 | a signed number. Unary operators like - or ~ always extend the | |
5282 | bignum to its largest size. */ | |
5283 | if (exp->X_unsigned | |
5284 | && nbr_digits < SIZE_OF_LARGE_NUMBER | |
5285 | && generic_bignum[nbr_digits - 1] == LITTLENUM_MASK) | |
5286 | generic_bignum[nbr_digits++] = 0; | |
5287 | ||
5288 | size = output_big_leb128 (NULL, generic_bignum, nbr_digits, sign); | |
252b5132 | 5289 | p = frag_more (size); |
74def31d | 5290 | if (output_big_leb128 (p, generic_bignum, nbr_digits, sign) > size) |
9136aa49 | 5291 | abort (); |
252b5132 RH |
5292 | } |
5293 | else | |
5294 | { | |
041ff4dd | 5295 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5296 | resolve things later. */ |
5297 | ||
041ff4dd | 5298 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5299 | make_expr_symbol (exp), 0, (char *) NULL); |
5300 | } | |
5301 | } | |
5302 | ||
5303 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5304 | ||
5305 | void | |
39e6acbd | 5306 | s_leb128 (int sign) |
252b5132 RH |
5307 | { |
5308 | expressionS exp; | |
5309 | ||
00bbdfe7 BW |
5310 | #ifdef md_flush_pending_output |
5311 | md_flush_pending_output (); | |
5312 | #endif | |
5313 | ||
041ff4dd NC |
5314 | do |
5315 | { | |
38cf168b | 5316 | expression (&exp); |
041ff4dd NC |
5317 | emit_leb128_expr (&exp, sign); |
5318 | } | |
5319 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5320 | |
5321 | input_line_pointer--; | |
5322 | demand_empty_rest_of_line (); | |
5323 | } | |
5324 | \f | |
38a57ae7 NC |
5325 | static void |
5326 | stringer_append_char (int c, int bitsize) | |
5327 | { | |
ec9ab52c JB |
5328 | if (c && in_bss ()) |
5329 | as_bad (_("attempt to store non-empty string in section `%s'"), | |
5330 | segment_name (now_seg)); | |
5331 | ||
38a57ae7 NC |
5332 | if (!target_big_endian) |
5333 | FRAG_APPEND_1_CHAR (c); | |
5334 | ||
5335 | switch (bitsize) | |
5336 | { | |
5337 | case 64: | |
5338 | FRAG_APPEND_1_CHAR (0); | |
5339 | FRAG_APPEND_1_CHAR (0); | |
5340 | FRAG_APPEND_1_CHAR (0); | |
5341 | FRAG_APPEND_1_CHAR (0); | |
5342 | /* Fall through. */ | |
5343 | case 32: | |
5344 | FRAG_APPEND_1_CHAR (0); | |
5345 | FRAG_APPEND_1_CHAR (0); | |
5346 | /* Fall through. */ | |
5347 | case 16: | |
5348 | FRAG_APPEND_1_CHAR (0); | |
5349 | /* Fall through. */ | |
5350 | case 8: | |
5351 | break; | |
5352 | default: | |
5353 | /* Called with invalid bitsize argument. */ | |
5354 | abort (); | |
5355 | break; | |
5356 | } | |
5357 | if (target_big_endian) | |
5358 | FRAG_APPEND_1_CHAR (c); | |
5359 | } | |
5360 | ||
5361 | /* Worker to do .ascii etc statements. | |
5362 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5363 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5364 | check it. |
5365 | Checks for end-of-line. | |
5366 | BITS_APPENDZERO says how many bits are in a target char. | |
5367 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5368 | |
5369 | void | |
38a57ae7 | 5370 | stringer (int bits_appendzero) |
252b5132 | 5371 | { |
38a57ae7 NC |
5372 | const int bitsize = bits_appendzero & ~7; |
5373 | const int append_zero = bits_appendzero & 1; | |
5374 | unsigned int c; | |
87975d2a | 5375 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5376 | char *start; |
87975d2a | 5377 | #endif |
252b5132 RH |
5378 | |
5379 | #ifdef md_flush_pending_output | |
5380 | md_flush_pending_output (); | |
5381 | #endif | |
5382 | ||
cc3f603a JM |
5383 | #ifdef md_cons_align |
5384 | md_cons_align (1); | |
5385 | #endif | |
5386 | ||
35c1a439 JB |
5387 | /* If we have been switched into the abs_section then we |
5388 | will not have an obstack onto which we can hang strings. */ | |
5389 | if (now_seg == absolute_section) | |
5390 | { | |
5391 | as_bad (_("strings must be placed into a section")); | |
5392 | ignore_rest_of_line (); | |
5393 | return; | |
5394 | } | |
5395 | ||
041ff4dd NC |
5396 | /* The following awkward logic is to parse ZERO or more strings, |
5397 | comma separated. Recall a string expression includes spaces | |
5398 | before the opening '\"' and spaces after the closing '\"'. | |
5399 | We fake a leading ',' if there is (supposed to be) | |
5400 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5401 | if (is_it_end_of_statement ()) |
5402 | { | |
041ff4dd NC |
5403 | c = 0; /* Skip loop. */ |
5404 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5405 | } |
5406 | else | |
5407 | { | |
041ff4dd | 5408 | c = ','; /* Do loop. */ |
252b5132 | 5409 | } |
d6415f6c | 5410 | |
252b5132 RH |
5411 | while (c == ',' || c == '<' || c == '"') |
5412 | { | |
5413 | SKIP_WHITESPACE (); | |
5414 | switch (*input_line_pointer) | |
5415 | { | |
5416 | case '\"': | |
041ff4dd | 5417 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5418 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5419 | start = input_line_pointer; |
87975d2a | 5420 | #endif |
38a57ae7 | 5421 | |
252b5132 | 5422 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5423 | stringer_append_char (c, bitsize); |
5424 | ||
252b5132 | 5425 | if (append_zero) |
38a57ae7 NC |
5426 | stringer_append_char (0, bitsize); |
5427 | ||
87975d2a | 5428 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5429 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5430 | will emit .string with a filename in the .debug section |
5431 | after a sequence of constants. See the comment in | |
5432 | emit_expr for the sequence. emit_expr will set | |
5433 | dwarf_file_string to non-zero if this string might be a | |
5434 | source file name. */ | |
252b5132 RH |
5435 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5436 | dwarf_file_string = 0; | |
5437 | else if (dwarf_file_string) | |
5438 | { | |
5439 | c = input_line_pointer[-1]; | |
5440 | input_line_pointer[-1] = '\0'; | |
5441 | listing_source_file (start); | |
5442 | input_line_pointer[-1] = c; | |
5443 | } | |
252b5132 RH |
5444 | #endif |
5445 | ||
5446 | break; | |
5447 | case '<': | |
5448 | input_line_pointer++; | |
5449 | c = get_single_number (); | |
38a57ae7 | 5450 | stringer_append_char (c, bitsize); |
252b5132 | 5451 | if (*input_line_pointer != '>') |
bdfb4455 WH |
5452 | { |
5453 | as_bad (_("expected <nn>")); | |
5454 | ignore_rest_of_line (); | |
5455 | return; | |
5456 | } | |
252b5132 RH |
5457 | input_line_pointer++; |
5458 | break; | |
5459 | case ',': | |
5460 | input_line_pointer++; | |
5461 | break; | |
5462 | } | |
5463 | SKIP_WHITESPACE (); | |
5464 | c = *input_line_pointer; | |
5465 | } | |
5466 | ||
5467 | demand_empty_rest_of_line (); | |
38a57ae7 | 5468 | } |
252b5132 RH |
5469 | \f |
5470 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5471 | high bits set. We'll probably also have trouble with | |
5472 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5473 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5474 | |
041ff4dd | 5475 | unsigned int |
39e6acbd | 5476 | next_char_of_string (void) |
252b5132 | 5477 | { |
3d540e93 | 5478 | unsigned int c; |
252b5132 RH |
5479 | |
5480 | c = *input_line_pointer++ & CHAR_MASK; | |
5481 | switch (c) | |
5482 | { | |
f49547a6 NC |
5483 | case 0: |
5484 | /* PR 20902: Do not advance past the end of the buffer. */ | |
5485 | -- input_line_pointer; | |
5486 | c = NOT_A_CHAR; | |
5487 | break; | |
5488 | ||
252b5132 RH |
5489 | case '\"': |
5490 | c = NOT_A_CHAR; | |
5491 | break; | |
5492 | ||
5493 | case '\n': | |
0e389e77 | 5494 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5495 | bump_line_counters (); |
5496 | break; | |
5497 | ||
252b5132 | 5498 | case '\\': |
16d87673 SB |
5499 | if (!TC_STRING_ESCAPES) |
5500 | break; | |
d9800776 | 5501 | switch (c = *input_line_pointer++ & CHAR_MASK) |
252b5132 RH |
5502 | { |
5503 | case 'b': | |
5504 | c = '\b'; | |
5505 | break; | |
5506 | ||
5507 | case 'f': | |
5508 | c = '\f'; | |
5509 | break; | |
5510 | ||
5511 | case 'n': | |
5512 | c = '\n'; | |
5513 | break; | |
5514 | ||
5515 | case 'r': | |
5516 | c = '\r'; | |
5517 | break; | |
5518 | ||
5519 | case 't': | |
5520 | c = '\t'; | |
5521 | break; | |
5522 | ||
5523 | case 'v': | |
5524 | c = '\013'; | |
5525 | break; | |
5526 | ||
5527 | case '\\': | |
5528 | case '"': | |
041ff4dd | 5529 | break; /* As itself. */ |
252b5132 RH |
5530 | |
5531 | case '0': | |
5532 | case '1': | |
5533 | case '2': | |
5534 | case '3': | |
5535 | case '4': | |
5536 | case '5': | |
5537 | case '6': | |
5538 | case '7': | |
5539 | case '8': | |
5540 | case '9': | |
5541 | { | |
5542 | long number; | |
5543 | int i; | |
5544 | ||
041ff4dd | 5545 | for (i = 0, number = 0; |
3882b010 | 5546 | ISDIGIT (c) && i < 3; |
041ff4dd | 5547 | c = *input_line_pointer++, i++) |
252b5132 RH |
5548 | { |
5549 | number = number * 8 + c - '0'; | |
5550 | } | |
f0e652b4 | 5551 | |
d9800776 | 5552 | c = number & CHAR_MASK; |
252b5132 RH |
5553 | } |
5554 | --input_line_pointer; | |
5555 | break; | |
5556 | ||
5557 | case 'x': | |
5558 | case 'X': | |
5559 | { | |
5560 | long number; | |
5561 | ||
5562 | number = 0; | |
5563 | c = *input_line_pointer++; | |
3882b010 | 5564 | while (ISXDIGIT (c)) |
252b5132 | 5565 | { |
3882b010 | 5566 | if (ISDIGIT (c)) |
252b5132 | 5567 | number = number * 16 + c - '0'; |
3882b010 | 5568 | else if (ISUPPER (c)) |
252b5132 RH |
5569 | number = number * 16 + c - 'A' + 10; |
5570 | else | |
5571 | number = number * 16 + c - 'a' + 10; | |
5572 | c = *input_line_pointer++; | |
5573 | } | |
d9800776 | 5574 | c = number & CHAR_MASK; |
252b5132 RH |
5575 | --input_line_pointer; |
5576 | } | |
5577 | break; | |
5578 | ||
5579 | case '\n': | |
041ff4dd | 5580 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5581 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5582 | c = '\n'; |
5583 | bump_line_counters (); | |
5584 | break; | |
5585 | ||
f49547a6 NC |
5586 | case 0: |
5587 | /* Do not advance past the end of the buffer. */ | |
5588 | -- input_line_pointer; | |
5589 | c = NOT_A_CHAR; | |
5590 | break; | |
5591 | ||
252b5132 RH |
5592 | default: |
5593 | ||
5594 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5595 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5596 | c = '?'; |
5597 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5598 | ||
5599 | break; | |
041ff4dd | 5600 | } |
252b5132 | 5601 | break; |
252b5132 RH |
5602 | |
5603 | default: | |
5604 | break; | |
041ff4dd | 5605 | } |
252b5132 | 5606 | return (c); |
041ff4dd | 5607 | } |
252b5132 RH |
5608 | \f |
5609 | static segT | |
3d540e93 | 5610 | get_segmented_expression (expressionS *expP) |
252b5132 | 5611 | { |
3d540e93 | 5612 | segT retval; |
252b5132 RH |
5613 | |
5614 | retval = expression (expP); | |
5615 | if (expP->X_op == O_illegal | |
5616 | || expP->X_op == O_absent | |
5617 | || expP->X_op == O_big) | |
5618 | { | |
0e389e77 | 5619 | as_bad (_("expected address expression")); |
252b5132 RH |
5620 | expP->X_op = O_constant; |
5621 | expP->X_add_number = 0; | |
5622 | retval = absolute_section; | |
5623 | } | |
5624 | return retval; | |
5625 | } | |
5626 | ||
041ff4dd | 5627 | static segT |
3d540e93 | 5628 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5629 | { |
259af69e | 5630 | segT retval = get_segmented_expression (expP); |
252b5132 | 5631 | |
259af69e | 5632 | if (retval == undefined_section) |
252b5132 RH |
5633 | { |
5634 | /* There is no easy way to extract the undefined symbol from the | |
5635 | expression. */ | |
5636 | if (expP->X_add_symbol != NULL | |
5637 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5638 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5639 | S_GET_NAME (expP->X_add_symbol)); | |
5640 | else | |
5641 | as_warn (_("some symbol undefined; zero assumed")); | |
5642 | retval = absolute_section; | |
5643 | expP->X_op = O_constant; | |
5644 | expP->X_add_number = 0; | |
5645 | } | |
259af69e | 5646 | return retval; |
041ff4dd | 5647 | } |
252b5132 | 5648 | |
041ff4dd | 5649 | char /* Return terminator. */ |
39e6acbd | 5650 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5651 | { |
5652 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5653 | *val_pointer = (long) get_absolute_expression (); | |
5654 | return (*input_line_pointer++); | |
5655 | } | |
5656 | \f | |
041ff4dd NC |
5657 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5658 | Give a warning if that happens. */ | |
5659 | ||
252b5132 | 5660 | char * |
39e6acbd | 5661 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5662 | { |
3d540e93 | 5663 | char *s; |
252b5132 RH |
5664 | |
5665 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5666 | { | |
3d540e93 | 5667 | int len; |
252b5132 RH |
5668 | |
5669 | for (len = *len_pointer; len > 0; len--) | |
5670 | { | |
5671 | if (*s == 0) | |
5672 | { | |
5673 | s = 0; | |
5674 | len = 1; | |
5675 | *len_pointer = 0; | |
0e389e77 | 5676 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5677 | } |
5678 | } | |
5679 | } | |
f0e652b4 | 5680 | |
252b5132 RH |
5681 | return s; |
5682 | } | |
5683 | \f | |
041ff4dd NC |
5684 | /* Demand string, but return a safe (=private) copy of the string. |
5685 | Return NULL if we can't read a string here. */ | |
5686 | ||
252b5132 | 5687 | char * |
39e6acbd | 5688 | demand_copy_string (int *lenP) |
252b5132 | 5689 | { |
3d540e93 NC |
5690 | unsigned int c; |
5691 | int len; | |
252b5132 RH |
5692 | char *retval; |
5693 | ||
5694 | len = 0; | |
5695 | SKIP_WHITESPACE (); | |
5696 | if (*input_line_pointer == '\"') | |
5697 | { | |
041ff4dd | 5698 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5699 | |
5700 | while (is_a_char (c = next_char_of_string ())) | |
5701 | { | |
5702 | obstack_1grow (¬es, c); | |
5703 | len++; | |
5704 | } | |
5705 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5706 | null terminated string. */ |
252b5132 | 5707 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5708 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5709 | } |
5710 | else | |
5711 | { | |
c95b35a9 | 5712 | as_bad (_("missing string")); |
252b5132 RH |
5713 | retval = NULL; |
5714 | ignore_rest_of_line (); | |
5715 | } | |
5716 | *lenP = len; | |
5717 | return (retval); | |
041ff4dd | 5718 | } |
252b5132 | 5719 | \f |
041ff4dd | 5720 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5721 | |
041ff4dd | 5722 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5723 | |
041ff4dd NC |
5724 | Out: 1 if input_line_pointer->end-of-line. */ |
5725 | ||
5726 | int | |
39e6acbd | 5727 | is_it_end_of_statement (void) |
252b5132 RH |
5728 | { |
5729 | SKIP_WHITESPACE (); | |
5730 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5731 | } |
252b5132 | 5732 | |
041ff4dd | 5733 | void |
39e6acbd | 5734 | equals (char *sym_name, int reassign) |
252b5132 | 5735 | { |
252b5132 | 5736 | char *stop = NULL; |
fb25138b | 5737 | char stopc = 0; |
252b5132 RH |
5738 | |
5739 | input_line_pointer++; | |
5740 | if (*input_line_pointer == '=') | |
5741 | input_line_pointer++; | |
9497f5ac NC |
5742 | if (reassign < 0 && *input_line_pointer == '=') |
5743 | input_line_pointer++; | |
252b5132 RH |
5744 | |
5745 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5746 | input_line_pointer++; | |
5747 | ||
5748 | if (flag_mri) | |
5749 | stop = mri_comment_field (&stopc); | |
5750 | ||
9497f5ac | 5751 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5752 | |
5753 | if (flag_mri) | |
31d20a21 AM |
5754 | { |
5755 | demand_empty_rest_of_line (); | |
5756 | mri_comment_end (stop, stopc); | |
5757 | } | |
041ff4dd | 5758 | } |
252b5132 | 5759 | |
7e005732 NC |
5760 | /* .incbin -- include a file verbatim at the current location. */ |
5761 | ||
5762 | void | |
39e6acbd | 5763 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5764 | { |
5765 | FILE * binfile; | |
5766 | char * path; | |
5767 | char * filename; | |
5768 | char * binfrag; | |
5769 | long skip = 0; | |
5770 | long count = 0; | |
5771 | long bytes; | |
5772 | int len; | |
5773 | ||
5774 | #ifdef md_flush_pending_output | |
5775 | md_flush_pending_output (); | |
5776 | #endif | |
5777 | ||
cc3f603a JM |
5778 | #ifdef md_cons_align |
5779 | md_cons_align (1); | |
5780 | #endif | |
5781 | ||
7e005732 NC |
5782 | SKIP_WHITESPACE (); |
5783 | filename = demand_copy_string (& len); | |
5784 | if (filename == NULL) | |
5785 | return; | |
5786 | ||
5787 | SKIP_WHITESPACE (); | |
5788 | ||
5789 | /* Look for optional skip and count. */ | |
5790 | if (* input_line_pointer == ',') | |
5791 | { | |
5792 | ++ input_line_pointer; | |
5793 | skip = get_absolute_expression (); | |
5794 | ||
5795 | SKIP_WHITESPACE (); | |
5796 | ||
5797 | if (* input_line_pointer == ',') | |
5798 | { | |
5799 | ++ input_line_pointer; | |
5800 | ||
5801 | count = get_absolute_expression (); | |
5802 | if (count == 0) | |
5803 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5804 | ||
5805 | SKIP_WHITESPACE (); | |
5806 | } | |
5807 | } | |
5808 | ||
5809 | demand_empty_rest_of_line (); | |
5810 | ||
5811 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5812 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5813 | if (binfile == NULL) |
5814 | { | |
5815 | int i; | |
5816 | ||
8860a416 | 5817 | path = XNEWVEC (char, (unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5818 | |
5819 | for (i = 0; i < include_dir_count; i++) | |
5820 | { | |
5821 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5822 | ||
f740e790 | 5823 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5824 | if (binfile != NULL) |
5825 | break; | |
5826 | } | |
5827 | ||
5828 | if (binfile == NULL) | |
5829 | as_bad (_("file not found: %s"), filename); | |
5830 | } | |
5831 | else | |
5832 | path = xstrdup (filename); | |
5833 | ||
5834 | if (binfile) | |
5835 | { | |
f740e790 NC |
5836 | long file_len; |
5837 | ||
7e005732 NC |
5838 | register_dependency (path); |
5839 | ||
5840 | /* Compute the length of the file. */ | |
5841 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5842 | { | |
5843 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5844 | goto done; | |
5845 | } | |
f740e790 | 5846 | file_len = ftell (binfile); |
7e005732 | 5847 | |
c556cc9c | 5848 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5849 | if (count == 0) |
c556cc9c | 5850 | count = file_len - skip; |
7e005732 | 5851 | |
c556cc9c | 5852 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5853 | { |
c556cc9c | 5854 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5855 | skip, count, file_len); |
7e005732 NC |
5856 | goto done; |
5857 | } | |
5858 | ||
5859 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5860 | { | |
5861 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5862 | goto done; | |
5863 | } | |
5864 | ||
5865 | /* Allocate frag space and store file contents in it. */ | |
5866 | binfrag = frag_more (count); | |
5867 | ||
5868 | bytes = fread (binfrag, 1, count, binfile); | |
5869 | if (bytes < count) | |
5870 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5871 | path, bytes, count); | |
5872 | } | |
dc1e8a47 | 5873 | done: |
7e005732 NC |
5874 | if (binfile != NULL) |
5875 | fclose (binfile); | |
9fbb53c7 | 5876 | free (path); |
7e005732 NC |
5877 | } |
5878 | ||
041ff4dd | 5879 | /* .include -- include a file at this point. */ |
252b5132 | 5880 | |
041ff4dd | 5881 | void |
39e6acbd | 5882 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5883 | { |
252b5132 RH |
5884 | char *filename; |
5885 | int i; | |
1e9cc1c2 | 5886 | FILE *try_file; |
252b5132 RH |
5887 | char *path; |
5888 | ||
041ff4dd | 5889 | if (!flag_m68k_mri) |
252b5132 RH |
5890 | { |
5891 | filename = demand_copy_string (&i); | |
5892 | if (filename == NULL) | |
5893 | { | |
5894 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5895 | called ignore_rest_of_line. */ |
252b5132 RH |
5896 | return; |
5897 | } | |
5898 | } | |
5899 | else | |
5900 | { | |
5901 | SKIP_WHITESPACE (); | |
5902 | i = 0; | |
041ff4dd | 5903 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5904 | && *input_line_pointer != ' ' |
5905 | && *input_line_pointer != '\t') | |
5906 | { | |
5907 | obstack_1grow (¬es, *input_line_pointer); | |
5908 | ++input_line_pointer; | |
5909 | ++i; | |
5910 | } | |
f0e652b4 | 5911 | |
252b5132 | 5912 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5913 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5914 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5915 | ++input_line_pointer; |
5916 | } | |
f0e652b4 | 5917 | |
252b5132 | 5918 | demand_empty_rest_of_line (); |
8860a416 TS |
5919 | path = XNEWVEC (char, (unsigned long) i |
5920 | + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5921 | |
252b5132 RH |
5922 | for (i = 0; i < include_dir_count; i++) |
5923 | { | |
5924 | strcpy (path, include_dirs[i]); | |
5925 | strcat (path, "/"); | |
5926 | strcat (path, filename); | |
1e9cc1c2 | 5927 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 5928 | { |
1e9cc1c2 | 5929 | fclose (try_file); |
252b5132 RH |
5930 | goto gotit; |
5931 | } | |
5932 | } | |
f0e652b4 | 5933 | |
252b5132 RH |
5934 | free (path); |
5935 | path = filename; | |
dc1e8a47 | 5936 | gotit: |
041ff4dd | 5937 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5938 | register_dependency (path); |
9f10757c | 5939 | input_scrub_insert_file (path); |
041ff4dd | 5940 | } |
252b5132 | 5941 | |
041ff4dd | 5942 | void |
39e6acbd | 5943 | add_include_dir (char *path) |
252b5132 RH |
5944 | { |
5945 | int i; | |
5946 | ||
5947 | if (include_dir_count == 0) | |
5948 | { | |
e0471c16 | 5949 | include_dirs = XNEWVEC (const char *, 2); |
041ff4dd | 5950 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5951 | include_dir_count = 2; |
5952 | } | |
5953 | else | |
5954 | { | |
5955 | include_dir_count++; | |
e0471c16 TS |
5956 | include_dirs = XRESIZEVEC (const char *, include_dirs, |
5957 | include_dir_count); | |
252b5132 RH |
5958 | } |
5959 | ||
041ff4dd | 5960 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5961 | |
5962 | i = strlen (path); | |
5963 | if (i > include_dir_maxlen) | |
5964 | include_dir_maxlen = i; | |
041ff4dd | 5965 | } |
252b5132 RH |
5966 | \f |
5967 | /* Output debugging information to denote the source file. */ | |
5968 | ||
5969 | static void | |
39e6acbd | 5970 | generate_file_debug (void) |
252b5132 RH |
5971 | { |
5972 | if (debug_type == DEBUG_STABS) | |
5973 | stabs_generate_asm_file (); | |
5974 | } | |
5975 | ||
5976 | /* Output line number debugging information for the current source line. */ | |
5977 | ||
5978 | void | |
39e6acbd | 5979 | generate_lineno_debug (void) |
252b5132 | 5980 | { |
252b5132 RH |
5981 | switch (debug_type) |
5982 | { | |
5983 | case DEBUG_UNSPECIFIED: | |
5984 | case DEBUG_NONE: | |
4dc7ead9 | 5985 | case DEBUG_DWARF: |
252b5132 RH |
5986 | break; |
5987 | case DEBUG_STABS: | |
5988 | stabs_generate_asm_lineno (); | |
5989 | break; | |
5990 | case DEBUG_ECOFF: | |
5991 | ecoff_generate_asm_lineno (); | |
5992 | break; | |
252b5132 | 5993 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5994 | /* ??? We could here indicate to dwarf2dbg.c that something |
5995 | has changed. However, since there is additional backend | |
5996 | support that is required (calling dwarf2_emit_insn), we | |
5997 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5998 | break; |
5999 | } | |
6000 | } | |
6001 | ||
6002 | /* Output debugging information to mark a function entry point or end point. | |
6003 | END_P is zero for .func, and non-zero for .endfunc. */ | |
6004 | ||
6005 | void | |
39e6acbd | 6006 | s_func (int end_p) |
252b5132 RH |
6007 | { |
6008 | do_s_func (end_p, NULL); | |
6009 | } | |
6010 | ||
6011 | /* Subroutine of s_func so targets can choose a different default prefix. | |
6012 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
6013 | ||
87c245cc | 6014 | static void |
39e6acbd | 6015 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
6016 | { |
6017 | /* Record the current function so that we can issue an error message for | |
6018 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
6019 | arguments. */ | |
6020 | static char *current_name; | |
6021 | static char *current_label; | |
6022 | ||
6023 | if (end_p) | |
6024 | { | |
6025 | if (current_name == NULL) | |
6026 | { | |
6027 | as_bad (_("missing .func")); | |
6028 | ignore_rest_of_line (); | |
6029 | return; | |
6030 | } | |
6031 | ||
6032 | if (debug_type == DEBUG_STABS) | |
6033 | stabs_generate_asm_endfunc (current_name, current_label); | |
6034 | ||
6035 | current_name = current_label = NULL; | |
6036 | } | |
6037 | else /* ! end_p */ | |
6038 | { | |
041ff4dd NC |
6039 | char *name, *label; |
6040 | char delim1, delim2; | |
252b5132 RH |
6041 | |
6042 | if (current_name != NULL) | |
6043 | { | |
6044 | as_bad (_(".endfunc missing for previous .func")); | |
6045 | ignore_rest_of_line (); | |
6046 | return; | |
6047 | } | |
6048 | ||
d02603dc | 6049 | delim1 = get_symbol_name (& name); |
252b5132 RH |
6050 | name = xstrdup (name); |
6051 | *input_line_pointer = delim1; | |
d02603dc | 6052 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
6053 | if (*input_line_pointer != ',') |
6054 | { | |
6055 | if (default_prefix) | |
05f4ab67 AM |
6056 | { |
6057 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
6058 | as_fatal ("%s", xstrerror (errno)); | |
6059 | } | |
252b5132 RH |
6060 | else |
6061 | { | |
7be1c489 | 6062 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
6063 | /* Missing entry point, use function's name with the leading |
6064 | char prepended. */ | |
6065 | if (leading_char) | |
05f4ab67 AM |
6066 | { |
6067 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
6068 | as_fatal ("%s", xstrerror (errno)); | |
6069 | } | |
252b5132 RH |
6070 | else |
6071 | label = name; | |
6072 | } | |
6073 | } | |
6074 | else | |
6075 | { | |
6076 | ++input_line_pointer; | |
6077 | SKIP_WHITESPACE (); | |
d02603dc | 6078 | delim2 = get_symbol_name (& label); |
252b5132 | 6079 | label = xstrdup (label); |
d02603dc | 6080 | restore_line_pointer (delim2); |
252b5132 RH |
6081 | } |
6082 | ||
6083 | if (debug_type == DEBUG_STABS) | |
6084 | stabs_generate_asm_func (name, label); | |
6085 | ||
6086 | current_name = name; | |
6087 | current_label = label; | |
6088 | } | |
6089 | ||
6090 | demand_empty_rest_of_line (); | |
6091 | } | |
6092 | \f | |
fa94de6b RM |
6093 | #ifdef HANDLE_BUNDLE |
6094 | ||
6095 | void | |
6096 | s_bundle_align_mode (int arg ATTRIBUTE_UNUSED) | |
6097 | { | |
6098 | unsigned int align = get_absolute_expression (); | |
6099 | SKIP_WHITESPACE (); | |
6100 | demand_empty_rest_of_line (); | |
6101 | ||
6102 | if (align > (unsigned int) TC_ALIGN_LIMIT) | |
6103 | as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"), | |
6104 | (unsigned int) TC_ALIGN_LIMIT); | |
6105 | ||
6106 | if (bundle_lock_frag != NULL) | |
6107 | { | |
6108 | as_bad (_("cannot change .bundle_align_mode inside .bundle_lock")); | |
6109 | return; | |
6110 | } | |
6111 | ||
6112 | bundle_align_p2 = align; | |
6113 | } | |
6114 | ||
6115 | void | |
6116 | s_bundle_lock (int arg ATTRIBUTE_UNUSED) | |
6117 | { | |
6118 | demand_empty_rest_of_line (); | |
6119 | ||
6120 | if (bundle_align_p2 == 0) | |
6121 | { | |
6122 | as_bad (_(".bundle_lock is meaningless without .bundle_align_mode")); | |
6123 | return; | |
6124 | } | |
6125 | ||
d416e51d | 6126 | if (bundle_lock_depth == 0) |
fa94de6b | 6127 | { |
d416e51d RM |
6128 | bundle_lock_frchain = frchain_now; |
6129 | bundle_lock_frag = start_bundle (); | |
fa94de6b | 6130 | } |
d416e51d | 6131 | ++bundle_lock_depth; |
fa94de6b RM |
6132 | } |
6133 | ||
6134 | void | |
6135 | s_bundle_unlock (int arg ATTRIBUTE_UNUSED) | |
6136 | { | |
6137 | unsigned int size; | |
6138 | ||
6139 | demand_empty_rest_of_line (); | |
6140 | ||
6141 | if (bundle_lock_frag == NULL) | |
6142 | { | |
6143 | as_bad (_(".bundle_unlock without preceding .bundle_lock")); | |
6144 | return; | |
6145 | } | |
6146 | ||
6147 | gas_assert (bundle_align_p2 > 0); | |
6148 | ||
d416e51d RM |
6149 | gas_assert (bundle_lock_depth > 0); |
6150 | if (--bundle_lock_depth > 0) | |
6151 | return; | |
6152 | ||
fa94de6b RM |
6153 | size = pending_bundle_size (bundle_lock_frag); |
6154 | ||
e54e9ac5 AM |
6155 | if (size > 1U << bundle_align_p2) |
6156 | as_bad (_(".bundle_lock sequence is %u bytes, " | |
6157 | "but bundle size is only %u bytes"), | |
6158 | size, 1u << bundle_align_p2); | |
fa94de6b RM |
6159 | else |
6160 | finish_bundle (bundle_lock_frag, size); | |
6161 | ||
6162 | bundle_lock_frag = NULL; | |
6163 | bundle_lock_frchain = NULL; | |
6164 | } | |
6165 | ||
6166 | #endif /* HANDLE_BUNDLE */ | |
6167 | \f | |
041ff4dd | 6168 | void |
39e6acbd | 6169 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6170 | { |
40a4d956 | 6171 | ignore_rest_of_line (); |
252b5132 RH |
6172 | } |
6173 | ||
252b5132 | 6174 | void |
39e6acbd | 6175 | read_print_statistics (FILE *file) |
252b5132 | 6176 | { |
32e4c1c2 | 6177 | htab_print_statistics (file, "pseudo-op table", po_hash); |
252b5132 RH |
6178 | } |
6179 | ||
041ff4dd NC |
6180 | /* Inserts the given line into the input stream. |
6181 | ||
9f10757c TW |
6182 | This call avoids macro/conditionals nesting checking, since the contents of |
6183 | the line are assumed to replace the contents of a line already scanned. | |
6184 | ||
47eebc20 | 6185 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
6186 | called by md_start_line_hook(). The given line is assumed to already be |
6187 | properly scrubbed. */ | |
6188 | ||
6189 | void | |
39e6acbd | 6190 | input_scrub_insert_line (const char *line) |
9f10757c TW |
6191 | { |
6192 | sb newline; | |
d2ae702c L |
6193 | size_t len = strlen (line); |
6194 | sb_build (&newline, len); | |
6195 | sb_add_buffer (&newline, line, len); | |
9f10757c TW |
6196 | input_scrub_include_sb (&newline, input_line_pointer, 0); |
6197 | sb_kill (&newline); | |
6198 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6199 | } | |
6200 | ||
6201 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 6202 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
6203 | |
6204 | void | |
39e6acbd | 6205 | input_scrub_insert_file (char *path) |
9f10757c TW |
6206 | { |
6207 | input_scrub_include_file (path, input_line_pointer); | |
6208 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6209 | } | |
40a4d956 JB |
6210 | |
6211 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
6212 | ||
6213 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
6214 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
6215 | #endif | |
6216 | ||
6217 | static char * | |
7592cfd7 NC |
6218 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
6219 | int in_macro) | |
40a4d956 JB |
6220 | { |
6221 | char inquote = '\0'; | |
6222 | int inescape = 0; | |
6223 | ||
6224 | while (!is_end_of_line[(unsigned char) *s] | |
6225 | || (inquote && !ISCNTRL (*s)) | |
6226 | || (inquote == '\'' && flag_mri) | |
6227 | #ifdef TC_EOL_IN_INSN | |
6228 | || (insn && TC_EOL_IN_INSN (s)) | |
6229 | #endif | |
7592cfd7 NC |
6230 | /* PR 6926: When we are parsing the body of a macro the sequence |
6231 | \@ is special - it refers to the invocation count. If the @ | |
6232 | character happens to be registered as a line-separator character | |
6233 | by the target, then the is_end_of_line[] test above will have | |
6234 | returned true, but we need to ignore the line separating | |
6235 | semantics in this particular case. */ | |
6236 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
6237 | ) |
6238 | { | |
6239 | if (mri_string && *s == '\'') | |
6240 | inquote ^= *s; | |
6241 | else if (inescape) | |
6242 | inescape = 0; | |
6243 | else if (*s == '\\') | |
6244 | inescape = 1; | |
6245 | else if (!inquote | |
6246 | ? *s == '"' | |
6247 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
6248 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
6249 | #endif | |
6250 | : *s == inquote) | |
6251 | inquote ^= *s; | |
6252 | ++s; | |
6253 | } | |
6254 | if (inquote) | |
6255 | as_warn (_("missing closing `%c'"), inquote); | |
e74211b6 | 6256 | if (inescape && !ignore_input ()) |
40a4d956 JB |
6257 | as_warn (_("stray `\\'")); |
6258 | return s; | |
6259 | } | |
6260 | ||
6261 | char * | |
6262 | find_end_of_line (char *s, int mri_string) | |
6263 | { | |
7592cfd7 | 6264 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 6265 | } |
1181551e NC |
6266 | |
6267 | static char *saved_ilp = NULL; | |
6268 | static char *saved_limit; | |
6269 | ||
6270 | /* Use BUF as a temporary input pointer for calling other functions in this | |
6271 | file. BUF must be a C string, so that its end can be found by strlen. | |
6272 | Also sets the buffer_limit variable (local to this file) so that buffer | |
6273 | overruns should not occur. Saves the current input line pointer so that | |
6274 | it can be restored by calling restore_ilp(). | |
6275 | ||
af60449c | 6276 | Does not support recursion. */ |
1181551e NC |
6277 | |
6278 | void | |
6279 | temp_ilp (char *buf) | |
6280 | { | |
6281 | gas_assert (saved_ilp == NULL); | |
6282 | gas_assert (buf != NULL); | |
6283 | ||
6284 | saved_ilp = input_line_pointer; | |
6285 | saved_limit = buffer_limit; | |
6286 | /* Prevent the assert in restore_ilp from triggering if | |
6287 | the input_line_pointer has not yet been initialised. */ | |
6288 | if (saved_ilp == NULL) | |
6289 | saved_limit = saved_ilp = (char *) ""; | |
6290 | ||
6291 | input_line_pointer = buf; | |
6292 | buffer_limit = buf + strlen (buf); | |
2469b3c5 | 6293 | input_from_string = TRUE; |
1181551e NC |
6294 | } |
6295 | ||
6296 | /* Restore a saved input line pointer. */ | |
6297 | ||
6298 | void | |
6299 | restore_ilp (void) | |
6300 | { | |
6301 | gas_assert (saved_ilp != NULL); | |
6302 | ||
6303 | input_line_pointer = saved_ilp; | |
6304 | buffer_limit = saved_limit; | |
2469b3c5 | 6305 | input_from_string = FALSE; |
1181551e NC |
6306 | |
6307 | saved_ilp = NULL; | |
6308 | } |