Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
250d07de | 2 | Copyright (C) 1986-2021 Free Software Foundation, Inc. |
252b5132 | 3 | |
ec2655a6 | 4 | This file is part of GAS, the GNU Assembler. |
252b5132 | 5 | |
ec2655a6 NC |
6 | GAS is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
252b5132 | 10 | |
ec2655a6 NC |
11 | GAS is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
252b5132 | 15 | |
ec2655a6 NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
252b5132 | 20 | |
59c871b4 | 21 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
33eaf5de | 22 | But then, GNU isn't supposed to run on your machine anyway. |
041ff4dd | 23 | (RMS is so shortsighted sometimes.) */ |
041ff4dd | 24 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 25 | |
252b5132 | 26 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 27 | grow when we do 4361 style flonums. */ |
252b5132 RH |
28 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
29 | ||
47eebc20 | 30 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
31 | Another group of these functions is in the expr.c module. */ |
32 | ||
252b5132 | 33 | #include "as.h" |
3882b010 | 34 | #include "safe-ctype.h" |
252b5132 RH |
35 | #include "subsegs.h" |
36 | #include "sb.h" | |
37 | #include "macro.h" | |
38 | #include "obstack.h" | |
252b5132 | 39 | #include "ecoff.h" |
54cfded0 | 40 | #include "dw2gencfi.h" |
7bfd842d | 41 | #include "wchar.h" |
252b5132 | 42 | |
d27aad4e AC |
43 | #include <limits.h> |
44 | ||
252b5132 | 45 | #ifndef TC_START_LABEL |
2e57ce7b | 46 | #define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR) (NEXT_CHAR == ':') |
252b5132 RH |
47 | #endif |
48 | ||
8684e216 HPN |
49 | /* Set by the object-format or the target. */ |
50 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 51 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 52 | do \ |
d6415f6c AM |
53 | { \ |
54 | if ((SIZE) >= 8) \ | |
55 | (P2VAR) = 3; \ | |
56 | else if ((SIZE) >= 4) \ | |
57 | (P2VAR) = 2; \ | |
58 | else if ((SIZE) >= 2) \ | |
59 | (P2VAR) = 1; \ | |
60 | else \ | |
61 | (P2VAR) = 0; \ | |
041ff4dd NC |
62 | } \ |
63 | while (0) | |
8684e216 HPN |
64 | #endif |
65 | ||
041ff4dd | 66 | char *input_line_pointer; /*->next char of source file to parse. */ |
5b7c81bd | 67 | bool input_from_string = false; |
252b5132 RH |
68 | |
69 | #if BITS_PER_CHAR != 8 | |
70 | /* The following table is indexed by[(char)] and will break if | |
71 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
72 | die horribly; | |
73 | #endif | |
74 | ||
75 | #ifndef LEX_AT | |
252b5132 RH |
76 | #define LEX_AT 0 |
77 | #endif | |
78 | ||
79 | #ifndef LEX_BR | |
80 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
81 | #define LEX_BR 0 | |
82 | #endif | |
83 | ||
84 | #ifndef LEX_PCT | |
85 | /* The Delta 68k assembler permits % inside label names. */ | |
86 | #define LEX_PCT 0 | |
87 | #endif | |
88 | ||
89 | #ifndef LEX_QM | |
90 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
91 | #define LEX_QM 0 | |
92 | #endif | |
93 | ||
58b5739a | 94 | #ifndef LEX_HASH |
800eeca4 JW |
95 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
96 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
97 | #define LEX_HASH 0 |
98 | #endif | |
99 | ||
252b5132 | 100 | #ifndef LEX_DOLLAR |
252b5132 RH |
101 | #define LEX_DOLLAR 3 |
102 | #endif | |
103 | ||
104 | #ifndef LEX_TILDE | |
105 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
106 | #define LEX_TILDE 0 | |
107 | #endif | |
108 | ||
041ff4dd | 109 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 110 | char lex_type[256] = { |
252b5132 RH |
111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
112 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 113 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
114 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
115 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
116 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
117 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 118 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
124 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
125 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
126 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
127 | }; | |
128 | ||
041ff4dd | 129 | /* In: a character. |
d67ffd56 L |
130 | Out: 1 if this character ends a line. |
131 | 2 if this character is a line separator. */ | |
ef99799a | 132 | char is_end_of_line[256] = { |
252b5132 | 133 | #ifdef CR_EOL |
b75c0c92 | 134 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 135 | #else |
b75c0c92 | 136 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 137 | #endif |
b75c0c92 AM |
138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
150 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
151 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
152 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 153 | }; |
252b5132 | 154 | |
a8a3b3b2 | 155 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
156 | char original_case_string[128]; |
157 | #endif | |
158 | ||
041ff4dd | 159 | /* Functions private to this file. */ |
252b5132 | 160 | |
041ff4dd NC |
161 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
162 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 163 | |
041ff4dd NC |
164 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
165 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
166 | internals manual. */ | |
252b5132 RH |
167 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
168 | ||
041ff4dd | 169 | /* Variables for handling include file directory table. */ |
252b5132 | 170 | |
041ff4dd | 171 | /* Table of pointers to directories to search for .include's. */ |
e0471c16 | 172 | const char **include_dirs; |
041ff4dd NC |
173 | |
174 | /* How many are in the table. */ | |
175 | int include_dir_count; | |
176 | ||
177 | /* Length of longest in table. */ | |
178 | int include_dir_maxlen = 1; | |
252b5132 RH |
179 | |
180 | #ifndef WORKING_DOT_WORD | |
181 | struct broken_word *broken_words; | |
182 | int new_broken_words; | |
183 | #endif | |
184 | ||
185 | /* The current offset into the absolute section. We don't try to | |
186 | build frags in the absolute section, since no data can be stored | |
187 | there. We just keep track of the current offset. */ | |
188 | addressT abs_section_offset; | |
189 | ||
190 | /* If this line had an MRI style label, it is stored in this variable. | |
191 | This is used by some of the MRI pseudo-ops. */ | |
192 | symbolS *line_label; | |
193 | ||
194 | /* This global variable is used to support MRI common sections. We | |
195 | translate such sections into a common symbol. This variable is | |
196 | non-NULL when we are in an MRI common section. */ | |
197 | symbolS *mri_common_symbol; | |
198 | ||
199 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
200 | need to align to an even byte boundary unless the next pseudo-op is | |
201 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
202 | may be needed. */ | |
203 | static int mri_pending_align; | |
204 | ||
205 | #ifndef NO_LISTING | |
206 | #ifdef OBJ_ELF | |
207 | /* This variable is set to be non-zero if the next string we see might | |
208 | be the name of the source file in DWARF debugging information. See | |
209 | the comment in emit_expr for the format we look for. */ | |
210 | static int dwarf_file_string; | |
211 | #endif | |
212 | #endif | |
213 | ||
fa94de6b RM |
214 | /* If the target defines the md_frag_max_var hook then we know |
215 | enough to implement the .bundle_align_mode features. */ | |
216 | #ifdef md_frag_max_var | |
217 | # define HANDLE_BUNDLE | |
218 | #endif | |
219 | ||
220 | #ifdef HANDLE_BUNDLE | |
221 | /* .bundle_align_mode sets this. Normally it's zero. When nonzero, | |
222 | it's the exponent of the bundle size, and aligned instruction bundle | |
223 | mode is in effect. */ | |
224 | static unsigned int bundle_align_p2; | |
225 | ||
226 | /* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets | |
227 | bundle_lock_frag to frag_now and then starts a new frag with | |
228 | frag_align_code. At the same time, bundle_lock_frain gets frchain_now, | |
229 | so that .bundle_unlock can verify that we didn't change segments. | |
230 | .bundle_unlock resets both to NULL. If we detect a bundling violation, | |
231 | then we reset bundle_lock_frchain to NULL as an indicator that we've | |
232 | already diagnosed the error with as_bad and don't need a cascade of | |
233 | redundant errors, but bundle_lock_frag remains set to indicate that | |
234 | we are expecting to see .bundle_unlock. */ | |
235 | static fragS *bundle_lock_frag; | |
236 | static frchainS *bundle_lock_frchain; | |
d416e51d RM |
237 | |
238 | /* This is incremented by .bundle_lock and decremented by .bundle_unlock, | |
239 | to allow nesting. */ | |
240 | static unsigned int bundle_lock_depth; | |
fa94de6b RM |
241 | #endif |
242 | ||
87c245cc | 243 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd | 244 | static void s_align (int, int); |
caa32fe5 | 245 | static void s_altmacro (int); |
057f53c1 | 246 | static void s_bad_end (int); |
05e9452c | 247 | static void s_reloc (int); |
39e6acbd | 248 | static int hex_float (int, char *); |
39e6acbd KH |
249 | static segT get_known_segmented_expression (expressionS * expP); |
250 | static void pobegin (void); | |
39a45edc | 251 | static size_t get_non_macro_line_sb (sb *); |
39e6acbd | 252 | static void generate_file_debug (void); |
7592cfd7 | 253 | static char *_find_end_of_line (char *, int, int, int); |
252b5132 | 254 | \f |
252b5132 | 255 | void |
39e6acbd | 256 | read_begin (void) |
252b5132 RH |
257 | { |
258 | const char *p; | |
259 | ||
260 | pobegin (); | |
261 | obj_read_begin_hook (); | |
262 | ||
263 | /* Something close -- but not too close -- to a multiple of 1024. | |
264 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
265 | obstack_begin (¬es, chunksize); | |
266 | obstack_begin (&cond_obstack, chunksize); | |
267 | ||
2e6976a8 DG |
268 | #ifndef tc_line_separator_chars |
269 | #define tc_line_separator_chars line_separator_chars | |
270 | #endif | |
041ff4dd | 271 | /* Use machine dependent syntax. */ |
2e6976a8 | 272 | for (p = tc_line_separator_chars; *p; p++) |
d67ffd56 | 273 | is_end_of_line[(unsigned char) *p] = 2; |
041ff4dd | 274 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
275 | |
276 | if (flag_mri) | |
277 | lex_type['?'] = 3; | |
278 | } | |
279 | \f | |
cc1bc22a | 280 | #ifndef TC_ADDRESS_BYTES |
cc1bc22a AM |
281 | #define TC_ADDRESS_BYTES address_bytes |
282 | ||
283 | static inline int | |
284 | address_bytes (void) | |
285 | { | |
286 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
287 | contain an address. */ | |
288 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
289 | n |= n >> 1; | |
290 | n |= n >> 2; | |
291 | n += 1; | |
292 | return n; | |
293 | } | |
294 | #endif | |
cc1bc22a | 295 | |
041ff4dd | 296 | /* Set up pseudo-op tables. */ |
252b5132 | 297 | |
32e4c1c2 ML |
298 | struct po_entry |
299 | { | |
300 | const char *poc_name; | |
301 | ||
302 | const pseudo_typeS *pop; | |
303 | }; | |
304 | ||
305 | typedef struct po_entry po_entry_t; | |
306 | ||
307 | /* Hash function for a po_entry. */ | |
308 | ||
309 | static hashval_t | |
310 | hash_po_entry (const void *e) | |
311 | { | |
312 | const po_entry_t *entry = (const po_entry_t *) e; | |
313 | return htab_hash_string (entry->poc_name); | |
314 | } | |
315 | ||
316 | /* Equality function for a po_entry. */ | |
317 | ||
318 | static int | |
319 | eq_po_entry (const void *a, const void *b) | |
320 | { | |
321 | const po_entry_t *ea = (const po_entry_t *) a; | |
322 | const po_entry_t *eb = (const po_entry_t *) b; | |
323 | ||
324 | return strcmp (ea->poc_name, eb->poc_name) == 0; | |
325 | } | |
326 | ||
327 | static po_entry_t * | |
328 | po_entry_alloc (const char *poc_name, const pseudo_typeS *pop) | |
329 | { | |
330 | po_entry_t *entry = XNEW (po_entry_t); | |
331 | entry->poc_name = poc_name; | |
332 | entry->pop = pop; | |
333 | return entry; | |
334 | } | |
335 | ||
336 | static const pseudo_typeS * | |
337 | po_entry_find (htab_t table, const char *poc_name) | |
338 | { | |
339 | po_entry_t needle = { poc_name, NULL }; | |
340 | po_entry_t *entry = htab_find (table, &needle); | |
341 | return entry != NULL ? entry->pop : NULL; | |
342 | } | |
343 | ||
344 | static struct htab *po_hash; | |
252b5132 | 345 | |
ef99799a | 346 | static const pseudo_typeS potable[] = { |
252b5132 RH |
347 | {"abort", s_abort, 0}, |
348 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 349 | {"altmacro", s_altmacro, 1}, |
38a57ae7 NC |
350 | {"ascii", stringer, 8+0}, |
351 | {"asciz", stringer, 8+1}, | |
252b5132 RH |
352 | {"balign", s_align_bytes, 0}, |
353 | {"balignw", s_align_bytes, -2}, | |
354 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 355 | /* block */ |
fa94de6b RM |
356 | #ifdef HANDLE_BUNDLE |
357 | {"bundle_align_mode", s_bundle_align_mode, 0}, | |
358 | {"bundle_lock", s_bundle_lock, 0}, | |
359 | {"bundle_unlock", s_bundle_unlock, 0}, | |
360 | #endif | |
252b5132 RH |
361 | {"byte", cons, 1}, |
362 | {"comm", s_comm, 0}, | |
363 | {"common", s_mri_common, 0}, | |
364 | {"common.s", s_mri_common, 1}, | |
365 | {"data", s_data, 0}, | |
366 | {"dc", cons, 2}, | |
cc1bc22a 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}, |
b1766e7c | 468 | {"nop", s_nop, 0}, |
8f065d3b | 469 | {"nops", s_nops, 0}, |
252b5132 RH |
470 | {"octa", cons, 16}, |
471 | {"offset", s_struct, 0}, | |
472 | {"org", s_org, 0}, | |
473 | {"p2align", s_align_ptwo, 0}, | |
474 | {"p2alignw", s_align_ptwo, -2}, | |
475 | {"p2alignl", s_align_ptwo, -4}, | |
476 | {"page", listing_eject, 0}, | |
477 | {"plen", listing_psize, 0}, | |
478 | {"print", s_print, 0}, | |
041ff4dd | 479 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
480 | {"purgem", s_purgem, 0}, |
481 | {"quad", cons, 8}, | |
05e9452c | 482 | {"reloc", s_reloc, 0}, |
252b5132 RH |
483 | {"rep", s_rept, 0}, |
484 | {"rept", s_rept, 0}, | |
485 | {"rva", s_rva, 4}, | |
041ff4dd NC |
486 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
487 | /* scl */ | |
488 | /* sect */ | |
252b5132 RH |
489 | {"set", s_set, 0}, |
490 | {"short", cons, 2}, | |
491 | {"single", float_cons, 'f'}, | |
041ff4dd | 492 | /* size */ |
252b5132 RH |
493 | {"space", s_space, 0}, |
494 | {"skip", s_space, 0}, | |
495 | {"sleb128", s_leb128, 1}, | |
496 | {"spc", s_ignore, 0}, | |
497 | {"stabd", s_stab, 'd'}, | |
498 | {"stabn", s_stab, 'n'}, | |
499 | {"stabs", s_stab, 's'}, | |
38a57ae7 NC |
500 | {"string", stringer, 8+1}, |
501 | {"string8", stringer, 8+1}, | |
502 | {"string16", stringer, 16+1}, | |
503 | {"string32", stringer, 32+1}, | |
504 | {"string64", stringer, 64+1}, | |
252b5132 | 505 | {"struct", s_struct, 0}, |
041ff4dd | 506 | /* tag */ |
252b5132 RH |
507 | {"text", s_text, 0}, |
508 | ||
509 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
510 | won't be able to use it for a while -- probably a year or more. | |
511 | But once this has been released, check with gcc maintainers | |
512 | before deleting it or even changing the spelling. */ | |
513 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
514 | /* If we're folding case -- done for some targets, not necessarily | |
515 | all -- the above string in an input file will be converted to | |
516 | this one. Match it either way... */ | |
517 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
518 | ||
041ff4dd | 519 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 520 | {"ttl", listing_title, 0}, |
041ff4dd | 521 | /* type */ |
252b5132 | 522 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
523 | /* use */ |
524 | /* val */ | |
252b5132 RH |
525 | {"xcom", s_comm, 0}, |
526 | {"xdef", s_globl, 0}, | |
527 | {"xref", s_ignore, 0}, | |
528 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 529 | {"warning", s_errwarn, 0}, |
06e77878 | 530 | {"weakref", s_weakref, 0}, |
252b5132 RH |
531 | {"word", cons, 2}, |
532 | {"zero", s_space, 0}, | |
5fda40b2 MF |
533 | {"2byte", cons, 2}, |
534 | {"4byte", cons, 4}, | |
535 | {"8byte", cons, 8}, | |
041ff4dd | 536 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
537 | }; |
538 | ||
87c245cc BE |
539 | static offsetT |
540 | get_absolute_expr (expressionS *exp) | |
541 | { | |
9497f5ac | 542 | expression_and_evaluate (exp); |
9136aa49 | 543 | |
87c245cc BE |
544 | if (exp->X_op != O_constant) |
545 | { | |
546 | if (exp->X_op != O_absent) | |
547 | as_bad (_("bad or irreducible absolute expression")); | |
548 | exp->X_add_number = 0; | |
549 | } | |
550 | return exp->X_add_number; | |
551 | } | |
552 | ||
553 | offsetT | |
554 | get_absolute_expression (void) | |
555 | { | |
556 | expressionS exp; | |
557 | ||
558 | return get_absolute_expr (&exp); | |
559 | } | |
560 | ||
252b5132 RH |
561 | static int pop_override_ok = 0; |
562 | static const char *pop_table_name; | |
563 | ||
564 | void | |
39e6acbd | 565 | pop_insert (const pseudo_typeS *table) |
252b5132 | 566 | { |
252b5132 RH |
567 | const pseudo_typeS *pop; |
568 | for (pop = table; pop->poc_name; pop++) | |
569 | { | |
fe0e921f AM |
570 | po_entry_t *elt = po_entry_alloc (pop->poc_name, pop); |
571 | if (htab_insert (po_hash, elt, 0) != NULL) | |
572 | { | |
573 | free (elt); | |
574 | if (!pop_override_ok) | |
575 | as_fatal (_("error constructing %s pseudo-op table"), | |
576 | pop_table_name); | |
577 | } | |
252b5132 RH |
578 | } |
579 | } | |
580 | ||
581 | #ifndef md_pop_insert | |
582 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
583 | #endif | |
584 | ||
585 | #ifndef obj_pop_insert | |
586 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
587 | #endif | |
588 | ||
54cfded0 AM |
589 | #ifndef cfi_pop_insert |
590 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
591 | #endif | |
592 | ||
041ff4dd | 593 | static void |
39e6acbd | 594 | pobegin (void) |
252b5132 | 595 | { |
32e4c1c2 ML |
596 | po_hash = htab_create_alloc (16, hash_po_entry, eq_po_entry, NULL, |
597 | xcalloc, xfree); | |
252b5132 | 598 | |
041ff4dd | 599 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
600 | pop_table_name = "md"; |
601 | md_pop_insert (); | |
602 | ||
041ff4dd | 603 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
604 | pop_table_name = "obj"; |
605 | pop_override_ok = 1; | |
606 | obj_pop_insert (); | |
607 | ||
041ff4dd | 608 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
609 | pop_table_name = "standard"; |
610 | pop_insert (potable); | |
d6415f6c | 611 | |
d58a1929 | 612 | /* Now CFI ones. */ |
54cfded0 AM |
613 | pop_table_name = "cfi"; |
614 | pop_override_ok = 1; | |
615 | cfi_pop_insert (); | |
252b5132 RH |
616 | } |
617 | \f | |
e74211b6 | 618 | #define HANDLE_CONDITIONAL_ASSEMBLY(num_read) \ |
252b5132 RH |
619 | if (ignore_input ()) \ |
620 | { \ | |
e74211b6 JB |
621 | char *eol = find_end_of_line (input_line_pointer - (num_read), \ |
622 | flag_m68k_mri); \ | |
40a4d956 JB |
623 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
624 | && eol >= buffer_limit) \ | |
625 | ? buffer_limit \ | |
626 | : eol + 1; \ | |
252b5132 RH |
627 | continue; \ |
628 | } | |
629 | ||
252b5132 RH |
630 | /* This function is used when scrubbing the characters between #APP |
631 | and #NO_APP. */ | |
632 | ||
633 | static char *scrub_string; | |
634 | static char *scrub_string_end; | |
635 | ||
39a45edc AM |
636 | static size_t |
637 | scrub_from_string (char *buf, size_t buflen) | |
252b5132 | 638 | { |
39a45edc | 639 | size_t copy; |
2b47531b ILT |
640 | |
641 | copy = scrub_string_end - scrub_string; | |
642 | if (copy > buflen) | |
643 | copy = buflen; | |
644 | memcpy (buf, scrub_string, copy); | |
645 | scrub_string += copy; | |
646 | return copy; | |
252b5132 RH |
647 | } |
648 | ||
5e75c3ab JB |
649 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
650 | static int | |
651 | try_macro (char term, const char *line) | |
652 | { | |
653 | sb out; | |
654 | const char *err; | |
655 | macro_entry *macro; | |
656 | ||
657 | if (check_macro (line, &out, &err, ¯o)) | |
658 | { | |
659 | if (err != NULL) | |
660 | as_bad ("%s", err); | |
661 | *input_line_pointer++ = term; | |
662 | input_scrub_include_sb (&out, | |
663 | input_line_pointer, 1); | |
664 | sb_kill (&out); | |
665 | buffer_limit = | |
666 | input_scrub_next_buffer (&input_line_pointer); | |
667 | #ifdef md_macro_info | |
668 | md_macro_info (macro); | |
669 | #endif | |
670 | return 1; | |
671 | } | |
672 | return 0; | |
673 | } | |
674 | ||
fa94de6b RM |
675 | #ifdef HANDLE_BUNDLE |
676 | /* Start a new instruction bundle. Returns the rs_align_code frag that | |
677 | will be used to align the new bundle. */ | |
678 | static fragS * | |
679 | start_bundle (void) | |
680 | { | |
681 | fragS *frag = frag_now; | |
682 | ||
683 | frag_align_code (0, 0); | |
684 | ||
685 | while (frag->fr_type != rs_align_code) | |
686 | frag = frag->fr_next; | |
687 | ||
688 | gas_assert (frag != frag_now); | |
689 | ||
690 | return frag; | |
691 | } | |
692 | ||
693 | /* Calculate the maximum size after relaxation of the region starting | |
694 | at the given frag and extending through frag_now (which is unfinished). */ | |
695 | static unsigned int | |
696 | pending_bundle_size (fragS *frag) | |
697 | { | |
698 | unsigned int offset = frag->fr_fix; | |
699 | unsigned int size = 0; | |
700 | ||
701 | gas_assert (frag != frag_now); | |
702 | gas_assert (frag->fr_type == rs_align_code); | |
703 | ||
704 | while (frag != frag_now) | |
705 | { | |
706 | /* This should only happen in what will later become an error case. */ | |
707 | if (frag == NULL) | |
708 | return 0; | |
709 | ||
710 | size += frag->fr_fix; | |
711 | if (frag->fr_type == rs_machine_dependent) | |
712 | size += md_frag_max_var (frag); | |
713 | ||
714 | frag = frag->fr_next; | |
715 | } | |
716 | ||
717 | gas_assert (frag == frag_now); | |
718 | size += frag_now_fix (); | |
719 | if (frag->fr_type == rs_machine_dependent) | |
720 | size += md_frag_max_var (frag); | |
721 | ||
722 | gas_assert (size >= offset); | |
723 | ||
724 | return size - offset; | |
725 | } | |
726 | ||
727 | /* Finish off the frag created to ensure bundle alignment. */ | |
728 | static void | |
729 | finish_bundle (fragS *frag, unsigned int size) | |
730 | { | |
731 | gas_assert (bundle_align_p2 > 0); | |
732 | gas_assert (frag->fr_type == rs_align_code); | |
733 | ||
734 | if (size > 1) | |
735 | { | |
736 | /* If there is more than a single byte, then we need to set up the | |
737 | alignment frag. Otherwise we leave it at its initial state from | |
738 | calling frag_align_code (0, 0), so that it does nothing. */ | |
739 | frag->fr_offset = bundle_align_p2; | |
740 | frag->fr_subtype = size - 1; | |
741 | } | |
742 | ||
743 | /* We do this every time rather than just in s_bundle_align_mode | |
744 | so that we catch any affected section without needing hooks all | |
745 | over for all paths that do section changes. It's cheap enough. */ | |
9136aa49 DG |
746 | if (bundle_align_p2 > OCTETS_PER_BYTE_POWER) |
747 | record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER); | |
fa94de6b RM |
748 | } |
749 | ||
750 | /* Assemble one instruction. This takes care of the bundle features | |
751 | around calling md_assemble. */ | |
752 | static void | |
753 | assemble_one (char *line) | |
754 | { | |
8d3eaee6 | 755 | fragS *insn_start_frag = NULL; |
fa94de6b RM |
756 | |
757 | if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now) | |
758 | { | |
759 | as_bad (_("cannot change section or subsection inside .bundle_lock")); | |
760 | /* Clearing this serves as a marker that we have already complained. */ | |
761 | bundle_lock_frchain = NULL; | |
762 | } | |
763 | ||
764 | if (bundle_lock_frchain == NULL && bundle_align_p2 > 0) | |
765 | insn_start_frag = start_bundle (); | |
766 | ||
767 | md_assemble (line); | |
768 | ||
769 | if (bundle_lock_frchain != NULL) | |
770 | { | |
771 | /* Make sure this hasn't pushed the locked sequence | |
772 | past the bundle size. */ | |
773 | unsigned int bundle_size = pending_bundle_size (bundle_lock_frag); | |
e54e9ac5 AM |
774 | if (bundle_size > 1U << bundle_align_p2) |
775 | as_bad (_ (".bundle_lock sequence at %u bytes, " | |
776 | "but .bundle_align_mode limit is %u bytes"), | |
fa94de6b RM |
777 | bundle_size, 1U << bundle_align_p2); |
778 | } | |
779 | else if (bundle_align_p2 > 0) | |
780 | { | |
781 | unsigned int insn_size = pending_bundle_size (insn_start_frag); | |
782 | ||
e54e9ac5 AM |
783 | if (insn_size > 1U << bundle_align_p2) |
784 | as_bad (_("single instruction is %u bytes long, " | |
785 | "but .bundle_align_mode limit is %u bytes"), | |
786 | insn_size, 1U << bundle_align_p2); | |
fa94de6b RM |
787 | |
788 | finish_bundle (insn_start_frag, insn_size); | |
789 | } | |
790 | } | |
791 | ||
792 | #else /* !HANDLE_BUNDLE */ | |
793 | ||
794 | # define assemble_one(line) md_assemble(line) | |
795 | ||
796 | #endif /* HANDLE_BUNDLE */ | |
797 | ||
5b7c81bd | 798 | static bool |
9136aa49 DG |
799 | in_bss (void) |
800 | { | |
fd361982 | 801 | flagword flags = bfd_section_flags (now_seg); |
9136aa49 DG |
802 | |
803 | return (flags & SEC_ALLOC) && !(flags & (SEC_LOAD | SEC_HAS_CONTENTS)); | |
804 | } | |
805 | ||
806 | /* Guts of .align directive: | |
807 | N is the power of two to which to align. A value of zero is accepted but | |
808 | ignored: the default alignment of the section will be at least this. | |
809 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
810 | LEN is the length of whatever FILL points to, if anything. If LEN is zero | |
811 | but FILL is not NULL then LEN is treated as if it were one. | |
812 | MAX is the maximum number of characters to skip when doing the alignment, | |
813 | or 0 if there is no maximum. */ | |
814 | ||
f86f5863 | 815 | void |
9136aa49 DG |
816 | do_align (unsigned int n, char *fill, unsigned int len, unsigned int max) |
817 | { | |
818 | if (now_seg == absolute_section || in_bss ()) | |
819 | { | |
820 | if (fill != NULL) | |
821 | while (len-- > 0) | |
822 | if (*fill++ != '\0') | |
823 | { | |
824 | if (now_seg == absolute_section) | |
825 | as_warn (_("ignoring fill value in absolute section")); | |
826 | else | |
827 | as_warn (_("ignoring fill value in section `%s'"), | |
828 | segment_name (now_seg)); | |
829 | break; | |
830 | } | |
831 | fill = NULL; | |
832 | len = 0; | |
833 | } | |
834 | ||
835 | #ifdef md_flush_pending_output | |
836 | md_flush_pending_output (); | |
837 | #endif | |
838 | ||
839 | #ifdef md_do_align | |
840 | md_do_align (n, fill, len, max, just_record_alignment); | |
841 | #endif | |
842 | ||
843 | /* Only make a frag if we HAVE to... */ | |
844 | if ((n > OCTETS_PER_BYTE_POWER) && !need_pass_2) | |
845 | { | |
846 | if (fill == NULL) | |
847 | { | |
848 | if (subseg_text_p (now_seg)) | |
849 | frag_align_code (n, max); | |
850 | else | |
851 | frag_align (n, 0, max); | |
852 | } | |
853 | else if (len <= 1) | |
854 | frag_align (n, *fill, max); | |
855 | else | |
856 | frag_align_pattern (n, fill, len, max); | |
857 | } | |
858 | ||
859 | #ifdef md_do_align | |
860 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL | |
861 | #endif | |
862 | ||
863 | if (n > OCTETS_PER_BYTE_POWER) | |
864 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); | |
865 | } | |
866 | ||
041ff4dd NC |
867 | /* We read the file, putting things into a web that represents what we |
868 | have been reading. */ | |
869 | void | |
e0471c16 | 870 | read_a_source_file (const char *name) |
252b5132 | 871 | { |
d02603dc NC |
872 | char nul_char; |
873 | char next_char; | |
91d6fa6a | 874 | char *s; /* String of symbol, '\0' appended. */ |
d27aad4e | 875 | long temp; |
32e4c1c2 | 876 | const pseudo_typeS *pop; |
252b5132 | 877 | |
4c400d5e AM |
878 | #ifdef WARN_COMMENTS |
879 | found_comment = 0; | |
880 | #endif | |
881 | ||
252b5132 RH |
882 | buffer = input_scrub_new_file (name); |
883 | ||
884 | listing_file (name); | |
885 | listing_newline (NULL); | |
886 | register_dependency (name); | |
887 | ||
888 | /* Generate debugging information before we've read anything in to denote | |
889 | this file as the "main" source file and not a subordinate one | |
890 | (e.g. N_SO vs N_SOL in stabs). */ | |
891 | generate_file_debug (); | |
892 | ||
893 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 894 | { /* We have another line to parse. */ |
5e75c3ab JB |
895 | #ifndef NO_LISTING |
896 | /* In order to avoid listing macro expansion lines with labels | |
897 | multiple times, keep track of which line was last issued. */ | |
898 | static char *last_eol; | |
899 | ||
900 | last_eol = NULL; | |
901 | #endif | |
252b5132 RH |
902 | while (input_line_pointer < buffer_limit) |
903 | { | |
5b7c81bd | 904 | bool was_new_line; |
041ff4dd | 905 | /* We have more of this buffer to parse. */ |
252b5132 | 906 | |
041ff4dd NC |
907 | /* We now have input_line_pointer->1st char of next line. |
908 | If input_line_pointer [-1] == '\n' then we just | |
909 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
910 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
911 | if (was_new_line) | |
252b5132 | 912 | { |
4a826962 | 913 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
914 | #ifdef md_start_line_hook |
915 | md_start_line_hook (); | |
916 | #endif | |
252b5132 RH |
917 | if (input_line_pointer[-1] == '\n') |
918 | bump_line_counters (); | |
f19df8f7 | 919 | } |
252b5132 | 920 | |
f19df8f7 AM |
921 | #ifndef NO_LISTING |
922 | /* If listing is on, and we are expanding a macro, then give | |
923 | the listing code the contents of the expanded line. */ | |
924 | if (listing) | |
925 | { | |
926 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
927 | { | |
928 | /* Find the end of the current expanded macro line. */ | |
929 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
930 | ||
931 | if (s != last_eol) | |
932 | { | |
933 | char *copy; | |
934 | int len; | |
935 | ||
936 | last_eol = s; | |
937 | /* Copy it for safe keeping. Also give an indication of | |
938 | how much macro nesting is involved at this point. */ | |
939 | len = s - input_line_pointer; | |
8860a416 | 940 | copy = XNEWVEC (char, len + macro_nest + 2); |
f19df8f7 AM |
941 | memset (copy, '>', macro_nest); |
942 | copy[macro_nest] = ' '; | |
943 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
944 | copy[macro_nest + 1 + len] = '\0'; | |
945 | ||
946 | /* Install the line with the listing facility. */ | |
947 | listing_newline (copy); | |
948 | } | |
949 | } | |
950 | else | |
951 | listing_newline (NULL); | |
952 | } | |
953 | #endif | |
954 | if (was_new_line) | |
955 | { | |
252b5132 RH |
956 | line_label = NULL; |
957 | ||
abd63a32 | 958 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 | 959 | { |
d02603dc | 960 | next_char = * input_line_pointer; |
252b5132 RH |
961 | /* Text at the start of a line must be a label, we |
962 | run down and stick a colon in. */ | |
d02603dc | 963 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 964 | { |
d02603dc | 965 | char *line_start; |
252b5132 RH |
966 | int mri_line_macro; |
967 | ||
e74211b6 | 968 | HANDLE_CONDITIONAL_ASSEMBLY (0); |
252b5132 | 969 | |
d02603dc NC |
970 | nul_char = get_symbol_name (& line_start); |
971 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
252b5132 RH |
972 | |
973 | /* In MRI mode, the EQU and MACRO pseudoops must | |
974 | be handled specially. */ | |
975 | mri_line_macro = 0; | |
976 | if (flag_m68k_mri) | |
977 | { | |
978 | char *rest = input_line_pointer + 1; | |
979 | ||
980 | if (*rest == ':') | |
981 | ++rest; | |
982 | if (*rest == ' ' || *rest == '\t') | |
983 | ++rest; | |
984 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
985 | || strncasecmp (rest, "SET", 3) == 0) | |
986 | && (rest[3] == ' ' || rest[3] == '\t')) | |
987 | { | |
988 | input_line_pointer = rest + 3; | |
989 | equals (line_start, | |
990 | strncasecmp (rest, "SET", 3) == 0); | |
991 | continue; | |
992 | } | |
993 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
994 | && (rest[5] == ' ' | |
995 | || rest[5] == '\t' | |
996 | || is_end_of_line[(unsigned char) rest[5]])) | |
997 | mri_line_macro = 1; | |
998 | } | |
999 | ||
1000 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
1001 | pseudo-op specially: we don't want to put the |
1002 | symbol in the symbol table. */ | |
041ff4dd | 1003 | if (!mri_line_macro |
a25c045a | 1004 | #ifdef TC_START_LABEL_WITHOUT_COLON |
2e57ce7b | 1005 | && TC_START_LABEL_WITHOUT_COLON (nul_char, next_char) |
a25c045a | 1006 | #endif |
ef99799a | 1007 | ) |
252b5132 RH |
1008 | line_label = colon (line_start); |
1009 | else | |
1010 | line_label = symbol_create (line_start, | |
1011 | absolute_section, | |
e01e1cee | 1012 | &zero_address_frag, 0); |
252b5132 | 1013 | |
d02603dc NC |
1014 | next_char = restore_line_pointer (nul_char); |
1015 | if (next_char == ':') | |
252b5132 RH |
1016 | input_line_pointer++; |
1017 | } | |
1018 | } | |
1019 | } | |
1020 | ||
47eebc20 | 1021 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
1022 | We expect a well-formed assembler statement. |
1023 | A "symbol-name:" is a statement. | |
f0e652b4 | 1024 | |
041ff4dd NC |
1025 | Depending on what compiler is used, the order of these tests |
1026 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
1027 | Each test is independent of all other tests at the (top) |
1028 | level. */ | |
1029 | do | |
d02603dc NC |
1030 | nul_char = next_char = *input_line_pointer++; |
1031 | while (next_char == '\t' || next_char == ' ' || next_char == '\f'); | |
252b5132 | 1032 | |
041ff4dd NC |
1033 | /* C is the 1st significant character. |
1034 | Input_line_pointer points after that character. */ | |
d02603dc | 1035 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 1036 | { |
d02603dc NC |
1037 | char *rest; |
1038 | ||
041ff4dd | 1039 | /* Want user-defined label or pseudo/opcode. */ |
e74211b6 | 1040 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1041 | |
d02603dc NC |
1042 | --input_line_pointer; |
1043 | nul_char = get_symbol_name (& s); /* name's delimiter. */ | |
1044 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
1045 | rest = input_line_pointer + (nul_char == '"' ? 2 : 1); | |
041ff4dd | 1046 | |
d02603dc NC |
1047 | /* NEXT_CHAR is character after symbol. |
1048 | The end of symbol in the input line is now '\0'. | |
d6415f6c AM |
1049 | S points to the beginning of the symbol. |
1050 | [In case of pseudo-op, s->'.'.] | |
d02603dc | 1051 | Input_line_pointer->'\0' where NUL_CHAR was. */ |
2e57ce7b | 1052 | if (TC_START_LABEL (s, nul_char, next_char)) |
252b5132 RH |
1053 | { |
1054 | if (flag_m68k_mri) | |
1055 | { | |
252b5132 | 1056 | /* In MRI mode, \tsym: set 0 is permitted. */ |
252b5132 RH |
1057 | if (*rest == ':') |
1058 | ++rest; | |
f0e652b4 | 1059 | |
252b5132 RH |
1060 | if (*rest == ' ' || *rest == '\t') |
1061 | ++rest; | |
f0e652b4 | 1062 | |
252b5132 RH |
1063 | if ((strncasecmp (rest, "EQU", 3) == 0 |
1064 | || strncasecmp (rest, "SET", 3) == 0) | |
1065 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1066 | { | |
1067 | input_line_pointer = rest + 3; | |
1068 | equals (s, 1); | |
1069 | continue; | |
1070 | } | |
1071 | } | |
1072 | ||
041ff4dd | 1073 | line_label = colon (s); /* User-defined label. */ |
d02603dc NC |
1074 | restore_line_pointer (nul_char); |
1075 | ++ input_line_pointer; | |
a645d1eb L |
1076 | #ifdef tc_check_label |
1077 | tc_check_label (line_label); | |
1078 | #endif | |
041ff4dd | 1079 | /* Input_line_pointer->after ':'. */ |
252b5132 | 1080 | SKIP_WHITESPACE (); |
252b5132 | 1081 | } |
d02603dc NC |
1082 | else if ((next_char == '=' && *rest == '=') |
1083 | || ((next_char == ' ' || next_char == '\t') | |
1084 | && rest[0] == '=' | |
1085 | && rest[1] == '=')) | |
9497f5ac NC |
1086 | { |
1087 | equals (s, -1); | |
1088 | demand_empty_rest_of_line (); | |
1089 | } | |
d02603dc NC |
1090 | else if ((next_char == '=' |
1091 | || ((next_char == ' ' || next_char == '\t') | |
1092 | && *rest == '=')) | |
ee3c9814 | 1093 | #ifdef TC_EQUAL_IN_INSN |
d02603dc | 1094 | && !TC_EQUAL_IN_INSN (next_char, s) |
ee3c9814 | 1095 | #endif |
fa94de6b | 1096 | ) |
252b5132 RH |
1097 | { |
1098 | equals (s, 1); | |
1099 | demand_empty_rest_of_line (); | |
1100 | } | |
1101 | else | |
041ff4dd NC |
1102 | { |
1103 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
1104 | pop = NULL; |
1105 | ||
a8a3b3b2 | 1106 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
1107 | { |
1108 | char *s2 = s; | |
37d8bb27 | 1109 | |
42135cad AM |
1110 | strncpy (original_case_string, s2, |
1111 | sizeof (original_case_string) - 1); | |
37d8bb27 | 1112 | original_case_string[sizeof (original_case_string) - 1] = 0; |
ef99799a | 1113 | |
252b5132 RH |
1114 | while (*s2) |
1115 | { | |
3882b010 | 1116 | *s2 = TOLOWER (*s2); |
252b5132 RH |
1117 | s2++; |
1118 | } | |
1119 | } | |
1120 | #endif | |
abd63a32 | 1121 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 1122 | { |
7be1c489 AM |
1123 | /* The MRI assembler uses pseudo-ops without |
1124 | a period. */ | |
32e4c1c2 | 1125 | pop = po_entry_find (po_hash, s); |
252b5132 RH |
1126 | if (pop != NULL && pop->poc_handler == NULL) |
1127 | pop = NULL; | |
1128 | } | |
1129 | ||
1130 | if (pop != NULL | |
041ff4dd | 1131 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 1132 | { |
041ff4dd | 1133 | /* PSEUDO - OP. |
f0e652b4 | 1134 | |
d02603dc | 1135 | WARNING: next_char may be end-of-line. |
d6415f6c AM |
1136 | We lookup the pseudo-op table with s+1 because we |
1137 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
1138 | |
1139 | if (pop == NULL) | |
32e4c1c2 | 1140 | pop = po_entry_find (po_hash, s + 1); |
e4475e39 NS |
1141 | if (pop && !pop->poc_handler) |
1142 | pop = NULL; | |
252b5132 RH |
1143 | |
1144 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
1145 | automatic alignment directive. What a hack |
1146 | this is. */ | |
252b5132 RH |
1147 | if (mri_pending_align |
1148 | && (pop == NULL | |
041ff4dd NC |
1149 | || !((pop->poc_handler == cons |
1150 | && pop->poc_val == 1) | |
1151 | || (pop->poc_handler == s_space | |
1152 | && pop->poc_val == 1) | |
252b5132 | 1153 | #ifdef tc_conditional_pseudoop |
041ff4dd | 1154 | || tc_conditional_pseudoop (pop) |
252b5132 | 1155 | #endif |
041ff4dd NC |
1156 | || pop->poc_handler == s_if |
1157 | || pop->poc_handler == s_ifdef | |
1158 | || pop->poc_handler == s_ifc | |
1159 | || pop->poc_handler == s_ifeqs | |
1160 | || pop->poc_handler == s_else | |
1161 | || pop->poc_handler == s_endif | |
1162 | || pop->poc_handler == s_globl | |
1163 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
1164 | { |
1165 | do_align (1, (char *) NULL, 0, 0); | |
1166 | mri_pending_align = 0; | |
f0e652b4 | 1167 | |
252b5132 RH |
1168 | if (line_label != NULL) |
1169 | { | |
2b47531b | 1170 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1171 | S_SET_VALUE (line_label, frag_now_fix ()); |
1172 | } | |
1173 | } | |
1174 | ||
041ff4dd | 1175 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
1176 | if (pop == NULL) |
1177 | { | |
5e75c3ab JB |
1178 | char *end = input_line_pointer; |
1179 | ||
d02603dc | 1180 | (void) restore_line_pointer (nul_char); |
252b5132 | 1181 | s_ignore (0); |
d02603dc | 1182 | nul_char = next_char = *--input_line_pointer; |
5e75c3ab | 1183 | *input_line_pointer = '\0'; |
d02603dc | 1184 | if (! macro_defined || ! try_macro (next_char, s)) |
5e75c3ab JB |
1185 | { |
1186 | *end = '\0'; | |
1187 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
d02603dc | 1188 | *input_line_pointer++ = nul_char; |
5e75c3ab | 1189 | } |
252b5132 RH |
1190 | continue; |
1191 | } | |
1192 | ||
041ff4dd | 1193 | /* Put it back for error messages etc. */ |
d02603dc | 1194 | next_char = restore_line_pointer (nul_char); |
252b5132 RH |
1195 | /* The following skip of whitespace is compulsory. |
1196 | A well shaped space is sometimes all that separates | |
041ff4dd | 1197 | keyword from operands. */ |
d02603dc | 1198 | if (next_char == ' ' || next_char == '\t') |
252b5132 | 1199 | input_line_pointer++; |
041ff4dd NC |
1200 | |
1201 | /* Input_line is restored. | |
d6415f6c AM |
1202 | Input_line_pointer->1st non-blank char |
1203 | after pseudo-operation. */ | |
252b5132 RH |
1204 | (*pop->poc_handler) (pop->poc_val); |
1205 | ||
1206 | /* If that was .end, just get out now. */ | |
1207 | if (pop->poc_handler == s_end) | |
1208 | goto quit; | |
1209 | } | |
1210 | else | |
1211 | { | |
d02603dc NC |
1212 | /* WARNING: next_char may be end-of-line. */ |
1213 | /* Also: input_line_pointer->`\0` where nul_char was. */ | |
1214 | (void) restore_line_pointer (nul_char); | |
7592cfd7 | 1215 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
d02603dc | 1216 | next_char = nul_char = *input_line_pointer; |
252b5132 RH |
1217 | *input_line_pointer = '\0'; |
1218 | ||
1219 | generate_lineno_debug (); | |
1220 | ||
d02603dc | 1221 | if (macro_defined && try_macro (next_char, s)) |
5e75c3ab | 1222 | continue; |
252b5132 RH |
1223 | |
1224 | if (mri_pending_align) | |
1225 | { | |
1226 | do_align (1, (char *) NULL, 0, 0); | |
1227 | mri_pending_align = 0; | |
1228 | if (line_label != NULL) | |
1229 | { | |
2b47531b | 1230 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1231 | S_SET_VALUE (line_label, frag_now_fix ()); |
1232 | } | |
1233 | } | |
1234 | ||
fa94de6b | 1235 | assemble_one (s); /* Assemble 1 instruction. */ |
252b5132 | 1236 | |
3be64886 NC |
1237 | /* PR 19630: The backend may have set ilp to NULL |
1238 | if it encountered a catastrophic failure. */ | |
1239 | if (input_line_pointer == NULL) | |
1240 | as_fatal (_("unable to continue with assembly.")); | |
1241 | ||
d02603dc | 1242 | *input_line_pointer++ = nul_char; |
252b5132 RH |
1243 | |
1244 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
1245 | this instruction. */ |
1246 | } | |
1247 | } | |
252b5132 | 1248 | continue; |
041ff4dd | 1249 | } |
252b5132 RH |
1250 | |
1251 | /* Empty statement? */ | |
d02603dc | 1252 | if (is_end_of_line[(unsigned char) next_char]) |
252b5132 RH |
1253 | continue; |
1254 | ||
d02603dc | 1255 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (next_char)) |
252b5132 | 1256 | { |
041ff4dd | 1257 | /* local label ("4:") */ |
252b5132 RH |
1258 | char *backup = input_line_pointer; |
1259 | ||
e74211b6 | 1260 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1261 | |
d02603dc NC |
1262 | temp = next_char - '0'; |
1263 | ||
1264 | if (nul_char == '"') | |
1265 | ++ input_line_pointer; | |
252b5132 | 1266 | |
041ff4dd | 1267 | /* Read the whole number. */ |
3882b010 | 1268 | while (ISDIGIT (*input_line_pointer)) |
252b5132 | 1269 | { |
d27aad4e AC |
1270 | const long digit = *input_line_pointer - '0'; |
1271 | if (temp > (LONG_MAX - digit) / 10) | |
1272 | { | |
1273 | as_bad (_("local label too large near %s"), backup); | |
1274 | temp = -1; | |
1275 | break; | |
1276 | } | |
1277 | temp = temp * 10 + digit; | |
252b5132 | 1278 | ++input_line_pointer; |
041ff4dd | 1279 | } |
252b5132 | 1280 | |
d27aad4e AC |
1281 | /* Overflow: stop processing the label. */ |
1282 | if (temp == -1) | |
7bb178ec L |
1283 | { |
1284 | ignore_rest_of_line (); | |
1285 | continue; | |
1286 | } | |
d27aad4e | 1287 | |
252b5132 RH |
1288 | if (LOCAL_LABELS_DOLLAR |
1289 | && *input_line_pointer == '$' | |
1290 | && *(input_line_pointer + 1) == ':') | |
1291 | { | |
1292 | input_line_pointer += 2; | |
1293 | ||
1294 | if (dollar_label_defined (temp)) | |
1295 | { | |
d27aad4e | 1296 | as_fatal (_("label \"%ld$\" redefined"), temp); |
252b5132 RH |
1297 | } |
1298 | ||
1299 | define_dollar_label (temp); | |
1300 | colon (dollar_label_name (temp, 0)); | |
1301 | continue; | |
1302 | } | |
1303 | ||
1304 | if (LOCAL_LABELS_FB | |
1305 | && *input_line_pointer++ == ':') | |
1306 | { | |
1307 | fb_label_instance_inc (temp); | |
1308 | colon (fb_label_name (temp, 0)); | |
1309 | continue; | |
1310 | } | |
1311 | ||
1312 | input_line_pointer = backup; | |
d02603dc | 1313 | } |
252b5132 | 1314 | |
d02603dc | 1315 | if (next_char && strchr (line_comment_chars, next_char)) |
041ff4dd | 1316 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1317 | sb sbuf; |
252b5132 RH |
1318 | char *ends; |
1319 | char *new_buf; | |
1320 | char *new_tmp; | |
1321 | unsigned int new_length; | |
1322 | char *tmp_buf = 0; | |
1323 | ||
252b5132 | 1324 | s = input_line_pointer; |
d34049e8 | 1325 | if (!startswith (s, "APP\n")) |
601e61cd NC |
1326 | { |
1327 | /* We ignore it. */ | |
1328 | ignore_rest_of_line (); | |
1329 | continue; | |
1330 | } | |
1331 | bump_line_counters (); | |
252b5132 RH |
1332 | s += 4; |
1333 | ||
1334 | ends = strstr (s, "#NO_APP\n"); | |
1335 | ||
1336 | if (!ends) | |
1337 | { | |
1338 | unsigned int tmp_len; | |
1339 | unsigned int num; | |
1340 | ||
1341 | /* The end of the #APP wasn't in this buffer. We | |
1342 | keep reading in buffers until we find the #NO_APP | |
1343 | that goes with this #APP There is one. The specs | |
47eebc20 | 1344 | guarantee it... */ |
252b5132 | 1345 | tmp_len = buffer_limit - s; |
8860a416 | 1346 | tmp_buf = XNEWVEC (char, tmp_len + 1); |
252b5132 RH |
1347 | memcpy (tmp_buf, s, tmp_len); |
1348 | do | |
1349 | { | |
1350 | new_tmp = input_scrub_next_buffer (&buffer); | |
1351 | if (!new_tmp) | |
1352 | break; | |
1353 | else | |
1354 | buffer_limit = new_tmp; | |
1355 | input_line_pointer = buffer; | |
1356 | ends = strstr (buffer, "#NO_APP\n"); | |
1357 | if (ends) | |
1358 | num = ends - buffer; | |
1359 | else | |
1360 | num = buffer_limit - buffer; | |
1361 | ||
8860a416 | 1362 | tmp_buf = XRESIZEVEC (char, tmp_buf, tmp_len + num); |
252b5132 RH |
1363 | memcpy (tmp_buf + tmp_len, buffer, num); |
1364 | tmp_len += num; | |
1365 | } | |
1366 | while (!ends); | |
1367 | ||
1368 | input_line_pointer = ends ? ends + 8 : NULL; | |
1369 | ||
1370 | s = tmp_buf; | |
1371 | ends = s + tmp_len; | |
1372 | ||
1373 | } | |
1374 | else | |
1375 | { | |
1376 | input_line_pointer = ends + 8; | |
1377 | } | |
1378 | ||
1379 | scrub_string = s; | |
1380 | scrub_string_end = ends; | |
1381 | ||
1382 | new_length = ends - s; | |
8860a416 | 1383 | new_buf = XNEWVEC (char, new_length); |
252b5132 RH |
1384 | new_tmp = new_buf; |
1385 | for (;;) | |
1386 | { | |
39a45edc AM |
1387 | size_t space; |
1388 | size_t size; | |
252b5132 RH |
1389 | |
1390 | space = (new_buf + new_length) - new_tmp; | |
1391 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1392 | ||
1393 | if (size < space) | |
1394 | { | |
64e55042 | 1395 | new_tmp[size] = 0; |
252b5132 RH |
1396 | break; |
1397 | } | |
1398 | ||
8860a416 | 1399 | new_buf = XRESIZEVEC (char, new_buf, new_length + 100); |
252b5132 RH |
1400 | new_tmp = new_buf + new_length; |
1401 | new_length += 100; | |
1402 | } | |
1403 | ||
9fbb53c7 | 1404 | free (tmp_buf); |
f0e652b4 | 1405 | |
64e55042 HPN |
1406 | /* We've "scrubbed" input to the preferred format. In the |
1407 | process we may have consumed the whole of the remaining | |
1408 | file (and included files). We handle this formatted | |
1409 | input similar to that of macro expansion, letting | |
1410 | actual macro expansion (possibly nested) and other | |
1411 | input expansion work. Beware that in messages, line | |
1412 | numbers and possibly file names will be incorrect. */ | |
d2ae702c L |
1413 | new_length = strlen (new_buf); |
1414 | sb_build (&sbuf, new_length); | |
1415 | sb_add_buffer (&sbuf, new_buf, new_length); | |
64e55042 HPN |
1416 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); |
1417 | sb_kill (&sbuf); | |
1418 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1419 | free (new_buf); | |
252b5132 RH |
1420 | continue; |
1421 | } | |
1422 | ||
e74211b6 | 1423 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 RH |
1424 | |
1425 | #ifdef tc_unrecognized_line | |
d02603dc | 1426 | if (tc_unrecognized_line (next_char)) |
252b5132 RH |
1427 | continue; |
1428 | #endif | |
0e389e77 | 1429 | input_line_pointer--; |
601e61cd | 1430 | /* Report unknown char as error. */ |
c95b35a9 | 1431 | demand_empty_rest_of_line (); |
041ff4dd | 1432 | } |
041ff4dd | 1433 | } |
252b5132 RH |
1434 | |
1435 | quit: | |
04648e65 | 1436 | symbol_set_value_now (&dot_symbol); |
252b5132 | 1437 | |
fa94de6b RM |
1438 | #ifdef HANDLE_BUNDLE |
1439 | if (bundle_lock_frag != NULL) | |
1440 | { | |
1441 | as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line, | |
1442 | _(".bundle_lock with no matching .bundle_unlock")); | |
1443 | bundle_lock_frag = NULL; | |
1444 | bundle_lock_frchain = NULL; | |
d416e51d | 1445 | bundle_lock_depth = 0; |
fa94de6b RM |
1446 | } |
1447 | #endif | |
1448 | ||
252b5132 | 1449 | #ifdef md_cleanup |
041ff4dd | 1450 | md_cleanup (); |
252b5132 | 1451 | #endif |
041ff4dd NC |
1452 | /* Close the input file. */ |
1453 | input_scrub_close (); | |
4c400d5e AM |
1454 | #ifdef WARN_COMMENTS |
1455 | { | |
1456 | if (warn_comment && found_comment) | |
1457 | as_warn_where (found_comment_file, found_comment, | |
1458 | "first comment found here"); | |
1459 | } | |
1460 | #endif | |
252b5132 RH |
1461 | } |
1462 | ||
e5604d79 | 1463 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
956a6ba3 | 1464 | Take the sign of the number from SIGN rather than X_add_number. */ |
e5604d79 RS |
1465 | |
1466 | static void | |
956a6ba3 | 1467 | convert_to_bignum (expressionS *exp, int sign) |
e5604d79 RS |
1468 | { |
1469 | valueT value; | |
1470 | unsigned int i; | |
1471 | ||
1472 | value = exp->X_add_number; | |
1473 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1474 | { | |
1475 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1476 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1477 | } | |
1478 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1479 | the sign of the original value. */ | |
956a6ba3 JB |
1480 | if ((exp->X_add_number < 0) == !sign) |
1481 | generic_bignum[i++] = sign ? LITTLENUM_MASK : 0; | |
e5604d79 RS |
1482 | exp->X_op = O_big; |
1483 | exp->X_add_number = i; | |
1484 | } | |
1485 | ||
252b5132 RH |
1486 | /* For most MRI pseudo-ops, the line actually ends at the first |
1487 | nonquoted space. This function looks for that point, stuffs a null | |
1488 | in, and sets *STOPCP to the character that used to be there, and | |
1489 | returns the location. | |
1490 | ||
1491 | Until I hear otherwise, I am going to assume that this is only true | |
1492 | for the m68k MRI assembler. */ | |
1493 | ||
1494 | char * | |
39e6acbd | 1495 | mri_comment_field (char *stopcp) |
252b5132 | 1496 | { |
252b5132 | 1497 | char *s; |
041ff4dd | 1498 | #ifdef TC_M68K |
252b5132 RH |
1499 | int inquote = 0; |
1500 | ||
1501 | know (flag_m68k_mri); | |
1502 | ||
1503 | for (s = input_line_pointer; | |
041ff4dd | 1504 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1505 | || inquote); |
1506 | s++) | |
1507 | { | |
1508 | if (*s == '\'') | |
041ff4dd | 1509 | inquote = !inquote; |
252b5132 | 1510 | } |
252b5132 | 1511 | #else |
041ff4dd NC |
1512 | for (s = input_line_pointer; |
1513 | !is_end_of_line[(unsigned char) *s]; | |
1514 | s++) | |
252b5132 | 1515 | ; |
041ff4dd | 1516 | #endif |
252b5132 RH |
1517 | *stopcp = *s; |
1518 | *s = '\0'; | |
f0e652b4 | 1519 | |
252b5132 | 1520 | return s; |
252b5132 RH |
1521 | } |
1522 | ||
1523 | /* Skip to the end of an MRI comment field. */ | |
1524 | ||
1525 | void | |
39e6acbd | 1526 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1527 | { |
1528 | know (flag_mri); | |
1529 | ||
1530 | input_line_pointer = stop; | |
1531 | *stop = stopc; | |
041ff4dd | 1532 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1533 | ++input_line_pointer; |
1534 | } | |
1535 | ||
041ff4dd | 1536 | void |
39e6acbd | 1537 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1538 | { |
1539 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1540 | } | |
1541 | ||
252b5132 RH |
1542 | /* Handle the .align pseudo-op. A positive ARG is a default alignment |
1543 | (in bytes). A negative ARG is the negative of the length of the | |
1544 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1545 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1546 | #ifndef TC_ALIGN_LIMIT |
1547 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1548 | #endif | |
9ebd302d | 1549 | |
252b5132 | 1550 | static void |
9136aa49 | 1551 | s_align (signed int arg, int bytes_p) |
252b5132 | 1552 | { |
11ec4ba9 | 1553 | unsigned int align_limit = TC_ALIGN_LIMIT; |
90320e40 | 1554 | addressT align; |
252b5132 | 1555 | char *stop = NULL; |
fb25138b | 1556 | char stopc = 0; |
252b5132 | 1557 | offsetT fill = 0; |
9136aa49 | 1558 | unsigned int max; |
252b5132 RH |
1559 | int fill_p; |
1560 | ||
1561 | if (flag_mri) | |
1562 | stop = mri_comment_field (&stopc); | |
1563 | ||
1564 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1565 | { | |
1566 | if (arg < 0) | |
1567 | align = 0; | |
1568 | else | |
041ff4dd | 1569 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1570 | } |
1571 | else | |
1572 | { | |
1573 | align = get_absolute_expression (); | |
1574 | SKIP_WHITESPACE (); | |
db2ed2e0 AM |
1575 | |
1576 | #ifdef TC_ALIGN_ZERO_IS_DEFAULT | |
1577 | if (arg > 0 && align == 0) | |
1578 | align = arg; | |
1579 | #endif | |
252b5132 RH |
1580 | } |
1581 | ||
1582 | if (bytes_p) | |
1583 | { | |
1584 | /* Convert to a power of 2. */ | |
1585 | if (align != 0) | |
1586 | { | |
1587 | unsigned int i; | |
1588 | ||
1589 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1590 | ; | |
1591 | if (align != 1) | |
0e389e77 | 1592 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1593 | |
252b5132 RH |
1594 | align = i; |
1595 | } | |
1596 | } | |
1597 | ||
b617dc20 | 1598 | if (align > align_limit) |
252b5132 | 1599 | { |
b617dc20 | 1600 | align = align_limit; |
90320e40 | 1601 | as_warn (_("alignment too large: %u assumed"), align_limit); |
252b5132 RH |
1602 | } |
1603 | ||
1604 | if (*input_line_pointer != ',') | |
1605 | { | |
1606 | fill_p = 0; | |
1607 | max = 0; | |
1608 | } | |
1609 | else | |
1610 | { | |
1611 | ++input_line_pointer; | |
1612 | if (*input_line_pointer == ',') | |
1613 | fill_p = 0; | |
1614 | else | |
1615 | { | |
1616 | fill = get_absolute_expression (); | |
1617 | SKIP_WHITESPACE (); | |
1618 | fill_p = 1; | |
1619 | } | |
1620 | ||
1621 | if (*input_line_pointer != ',') | |
1622 | max = 0; | |
1623 | else | |
1624 | { | |
1625 | ++input_line_pointer; | |
1626 | max = get_absolute_expression (); | |
1627 | } | |
1628 | } | |
1629 | ||
041ff4dd | 1630 | if (!fill_p) |
252b5132 RH |
1631 | { |
1632 | if (arg < 0) | |
1633 | as_warn (_("expected fill pattern missing")); | |
1634 | do_align (align, (char *) NULL, 0, max); | |
1635 | } | |
1636 | else | |
1637 | { | |
9136aa49 | 1638 | unsigned int fill_len; |
252b5132 RH |
1639 | |
1640 | if (arg >= 0) | |
1641 | fill_len = 1; | |
1642 | else | |
041ff4dd | 1643 | fill_len = -arg; |
9136aa49 | 1644 | |
252b5132 RH |
1645 | if (fill_len <= 1) |
1646 | { | |
9136aa49 | 1647 | char fill_char = 0; |
252b5132 RH |
1648 | |
1649 | fill_char = fill; | |
1650 | do_align (align, &fill_char, fill_len, max); | |
1651 | } | |
1652 | else | |
1653 | { | |
1654 | char ab[16]; | |
1655 | ||
1656 | if ((size_t) fill_len > sizeof ab) | |
9136aa49 DG |
1657 | { |
1658 | as_warn (_("fill pattern too long, truncating to %u"), | |
1659 | (unsigned) sizeof ab); | |
1660 | fill_len = sizeof ab; | |
1661 | } | |
1662 | ||
252b5132 RH |
1663 | md_number_to_chars (ab, fill, fill_len); |
1664 | do_align (align, ab, fill_len, max); | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | demand_empty_rest_of_line (); | |
1669 | ||
1670 | if (flag_mri) | |
1671 | mri_comment_end (stop, stopc); | |
1672 | } | |
1673 | ||
1674 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1675 | align to a 4 byte boundary. */ | |
1676 | ||
041ff4dd | 1677 | void |
39e6acbd | 1678 | s_align_bytes (int arg) |
252b5132 RH |
1679 | { |
1680 | s_align (arg, 1); | |
1681 | } | |
1682 | ||
1683 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1684 | to a 2**4 boundary. */ | |
1685 | ||
041ff4dd | 1686 | void |
39e6acbd | 1687 | s_align_ptwo (int arg) |
252b5132 RH |
1688 | { |
1689 | s_align (arg, 0); | |
1690 | } | |
1691 | ||
caa32fe5 NC |
1692 | /* Switch in and out of alternate macro mode. */ |
1693 | ||
b38ead21 | 1694 | static void |
caa32fe5 NC |
1695 | s_altmacro (int on) |
1696 | { | |
1697 | demand_empty_rest_of_line (); | |
1698 | macro_set_alternate (on); | |
1699 | } | |
1700 | ||
7bfd842d NC |
1701 | /* Read a symbol name from input_line_pointer. |
1702 | ||
1703 | Stores the symbol name in a buffer and returns a pointer to this buffer. | |
1704 | The buffer is xalloc'ed. It is the caller's responsibility to free | |
1705 | this buffer. | |
1706 | ||
1707 | The name is not left in the i_l_p buffer as it may need processing | |
1708 | to handle escape characters. | |
1709 | ||
1710 | Advances i_l_p to the next non-whitespace character. | |
1711 | ||
1712 | If a symbol name could not be read, the routine issues an error | |
1713 | messages, skips to the end of the line and returns NULL. */ | |
1714 | ||
69602580 | 1715 | char * |
7bfd842d NC |
1716 | read_symbol_name (void) |
1717 | { | |
1718 | char * name; | |
1719 | char * start; | |
1720 | char c; | |
1721 | ||
1722 | c = *input_line_pointer++; | |
1723 | ||
1724 | if (c == '"') | |
1725 | { | |
1726 | #define SYM_NAME_CHUNK_LEN 128 | |
1727 | ptrdiff_t len = SYM_NAME_CHUNK_LEN; | |
1728 | char * name_end; | |
1729 | unsigned int C; | |
1730 | ||
8860a416 | 1731 | start = name = XNEWVEC (char, len + 1); |
7bfd842d NC |
1732 | |
1733 | name_end = name + SYM_NAME_CHUNK_LEN; | |
1734 | ||
1735 | while (is_a_char (C = next_char_of_string ())) | |
1736 | { | |
1737 | if (name >= name_end) | |
1738 | { | |
1739 | ptrdiff_t sofar; | |
1740 | ||
1741 | sofar = name - start; | |
1742 | len += SYM_NAME_CHUNK_LEN; | |
8860a416 | 1743 | start = XRESIZEVEC (char, start, len + 1); |
7bfd842d NC |
1744 | name_end = start + len; |
1745 | name = start + sofar; | |
1746 | } | |
34bca508 | 1747 | |
7bfd842d NC |
1748 | *name++ = (char) C; |
1749 | } | |
1750 | *name = 0; | |
1751 | ||
1752 | /* Since quoted symbol names can contain non-ASCII characters, | |
1753 | check the string and warn if it cannot be recognised by the | |
1754 | current character set. */ | |
1755 | if (mbstowcs (NULL, name, len) == (size_t) -1) | |
1756 | as_warn (_("symbol name not recognised in the current locale")); | |
1757 | } | |
2469b3c5 | 1758 | else if (is_name_beginner (c) || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1759 | { |
1760 | ptrdiff_t len; | |
1761 | ||
1762 | name = input_line_pointer - 1; | |
1763 | ||
2469b3c5 | 1764 | /* We accept FAKE_LABEL_CHAR in a name in case this is |
7bfd842d NC |
1765 | being called with a constructed string. */ |
1766 | while (is_part_of_name (c = *input_line_pointer++) | |
2469b3c5 | 1767 | || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1768 | ; |
1769 | ||
1770 | len = (input_line_pointer - name) - 1; | |
8860a416 | 1771 | start = XNEWVEC (char, len + 1); |
7bfd842d NC |
1772 | |
1773 | memcpy (start, name, len); | |
1774 | start[len] = 0; | |
1775 | ||
1776 | /* Skip a name ender char if one is present. */ | |
1777 | if (! is_name_ender (c)) | |
1778 | --input_line_pointer; | |
1779 | } | |
1780 | else | |
1781 | name = start = NULL; | |
1782 | ||
1783 | if (name == start) | |
1784 | { | |
1785 | as_bad (_("expected symbol name")); | |
1786 | ignore_rest_of_line (); | |
1787 | return NULL; | |
1788 | } | |
34bca508 | 1789 | |
7bfd842d NC |
1790 | SKIP_WHITESPACE (); |
1791 | ||
1792 | return start; | |
1793 | } | |
1794 | ||
1795 | ||
e13bab5a AM |
1796 | symbolS * |
1797 | s_comm_internal (int param, | |
1798 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1799 | { |
e13bab5a | 1800 | char *name; |
e13bab5a AM |
1801 | offsetT temp, size; |
1802 | symbolS *symbolP = NULL; | |
252b5132 | 1803 | char *stop = NULL; |
fb25138b | 1804 | char stopc = 0; |
e13bab5a | 1805 | expressionS exp; |
252b5132 RH |
1806 | |
1807 | if (flag_mri) | |
1808 | stop = mri_comment_field (&stopc); | |
1809 | ||
7bfd842d NC |
1810 | if ((name = read_symbol_name ()) == NULL) |
1811 | goto out; | |
f0e652b4 | 1812 | |
e13bab5a AM |
1813 | /* Accept an optional comma after the name. The comma used to be |
1814 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1815 | if (*input_line_pointer == ',') | |
1816 | input_line_pointer++; | |
1817 | ||
e13bab5a AM |
1818 | temp = get_absolute_expr (&exp); |
1819 | size = temp; | |
65879393 | 1820 | size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1821 | if (exp.X_op == O_absent) |
252b5132 | 1822 | { |
e13bab5a | 1823 | as_bad (_("missing size expression")); |
252b5132 | 1824 | ignore_rest_of_line (); |
e13bab5a | 1825 | goto out; |
252b5132 | 1826 | } |
e13bab5a | 1827 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1828 | { |
e13bab5a | 1829 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1830 | ignore_rest_of_line (); |
e13bab5a | 1831 | goto out; |
252b5132 | 1832 | } |
f0e652b4 | 1833 | |
252b5132 | 1834 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1835 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1836 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1837 | { |
92757bc9 JB |
1838 | if (!S_IS_VOLATILE (symbolP)) |
1839 | { | |
1840 | symbolP = NULL; | |
1841 | as_bad (_("symbol `%s' is already defined"), name); | |
92757bc9 JB |
1842 | ignore_rest_of_line (); |
1843 | goto out; | |
1844 | } | |
89cdfe57 | 1845 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1846 | S_SET_SEGMENT (symbolP, undefined_section); |
1847 | S_SET_VALUE (symbolP, 0); | |
1848 | symbol_set_frag (symbolP, &zero_address_frag); | |
1849 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1850 | } |
f0e652b4 | 1851 | |
e13bab5a AM |
1852 | size = S_GET_VALUE (symbolP); |
1853 | if (size == 0) | |
1854 | size = temp; | |
1855 | else if (size != temp) | |
1856 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1857 | name, (long) size, (long) temp); | |
1858 | ||
e13bab5a AM |
1859 | if (comm_parse_extra != NULL) |
1860 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1861 | else |
1862 | { | |
e13bab5a | 1863 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1864 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1865 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
e13bab5a | 1866 | } |
252b5132 RH |
1867 | |
1868 | demand_empty_rest_of_line (); | |
e13bab5a | 1869 | out: |
252b5132 RH |
1870 | if (flag_mri) |
1871 | mri_comment_end (stop, stopc); | |
9fbb53c7 | 1872 | free (name); |
e13bab5a AM |
1873 | return symbolP; |
1874 | } | |
1875 | ||
1876 | void | |
1877 | s_comm (int ignore) | |
1878 | { | |
1879 | s_comm_internal (ignore, NULL); | |
1880 | } | |
252b5132 RH |
1881 | |
1882 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1883 | symbol with the appropriate name. We make s_space do the right | |
1884 | thing by increasing the size. */ | |
1885 | ||
1886 | void | |
39e6acbd | 1887 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1888 | { |
1889 | char *name; | |
1890 | char c; | |
1891 | char *alc = NULL; | |
1892 | symbolS *sym; | |
1893 | offsetT align; | |
1894 | char *stop = NULL; | |
fb25138b | 1895 | char stopc = 0; |
252b5132 | 1896 | |
041ff4dd | 1897 | if (!flag_mri) |
252b5132 RH |
1898 | { |
1899 | s_comm (0); | |
1900 | return; | |
1901 | } | |
1902 | ||
1903 | stop = mri_comment_field (&stopc); | |
1904 | ||
1905 | SKIP_WHITESPACE (); | |
1906 | ||
1907 | name = input_line_pointer; | |
3882b010 | 1908 | if (!ISDIGIT (*name)) |
d02603dc | 1909 | c = get_symbol_name (& name); |
252b5132 RH |
1910 | else |
1911 | { | |
1912 | do | |
1913 | { | |
1914 | ++input_line_pointer; | |
1915 | } | |
3882b010 | 1916 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1917 | |
252b5132 RH |
1918 | c = *input_line_pointer; |
1919 | *input_line_pointer = '\0'; | |
1920 | ||
1921 | if (line_label != NULL) | |
1922 | { | |
8860a416 TS |
1923 | alc = XNEWVEC (char, strlen (S_GET_NAME (line_label)) |
1924 | + (input_line_pointer - name) + 1); | |
252b5132 RH |
1925 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); |
1926 | name = alc; | |
1927 | } | |
1928 | } | |
1929 | ||
1930 | sym = symbol_find_or_make (name); | |
d02603dc | 1931 | c = restore_line_pointer (c); |
9fbb53c7 | 1932 | free (alc); |
252b5132 RH |
1933 | |
1934 | if (*input_line_pointer != ',') | |
1935 | align = 0; | |
1936 | else | |
1937 | { | |
1938 | ++input_line_pointer; | |
1939 | align = get_absolute_expression (); | |
1940 | } | |
1941 | ||
041ff4dd | 1942 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1943 | { |
0e389e77 | 1944 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1945 | ignore_rest_of_line (); |
1946 | mri_comment_end (stop, stopc); | |
1947 | return; | |
1948 | } | |
1949 | ||
1950 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1951 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1952 | mri_common_symbol = sym; |
1953 | ||
1954 | #ifdef S_SET_ALIGN | |
1955 | if (align != 0) | |
1956 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1957 | #else |
1958 | (void) align; | |
252b5132 RH |
1959 | #endif |
1960 | ||
1961 | if (line_label != NULL) | |
1962 | { | |
2b47531b ILT |
1963 | expressionS exp; |
1964 | exp.X_op = O_symbol; | |
1965 | exp.X_add_symbol = sym; | |
1966 | exp.X_add_number = 0; | |
1967 | symbol_set_value_expression (line_label, &exp); | |
1968 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1969 | S_SET_SEGMENT (line_label, expr_section); |
1970 | } | |
1971 | ||
1972 | /* FIXME: We just ignore the small argument, which distinguishes | |
1973 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1974 | ||
1975 | /* Ignore the type and hptype. */ | |
1976 | if (*input_line_pointer == ',') | |
1977 | input_line_pointer += 2; | |
1978 | if (*input_line_pointer == ',') | |
1979 | input_line_pointer += 2; | |
1980 | ||
1981 | demand_empty_rest_of_line (); | |
1982 | ||
1983 | mri_comment_end (stop, stopc); | |
1984 | } | |
1985 | ||
1986 | void | |
39e6acbd | 1987 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1988 | { |
1989 | segT section; | |
3d540e93 | 1990 | int temp; |
252b5132 RH |
1991 | |
1992 | temp = get_absolute_expression (); | |
1993 | if (flag_readonly_data_in_text) | |
1994 | { | |
1995 | section = text_section; | |
1996 | temp += 1000; | |
1997 | } | |
1998 | else | |
1999 | section = data_section; | |
2000 | ||
2001 | subseg_set (section, (subsegT) temp); | |
2002 | ||
252b5132 RH |
2003 | demand_empty_rest_of_line (); |
2004 | } | |
2005 | ||
2006 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
2007 | do_scrub_chars when a preprocessor # line comment is seen with a | |
2008 | file name. This default definition may be overridden by the object | |
2009 | or CPU specific pseudo-ops. This function is also the default | |
2010 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
2011 | .file. */ | |
2012 | ||
ecb4347a | 2013 | void |
f17c130b | 2014 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
2015 | { |
2016 | #ifdef LISTING | |
2017 | if (listing) | |
2018 | listing_source_file (file); | |
2019 | #endif | |
2020 | register_dependency (file); | |
2021 | #ifdef obj_app_file | |
c04f5787 | 2022 | obj_app_file (file, appfile); |
ecb4347a DJ |
2023 | #endif |
2024 | } | |
2025 | ||
041ff4dd | 2026 | void |
39e6acbd | 2027 | s_app_file (int appfile) |
252b5132 | 2028 | { |
3d540e93 | 2029 | char *s; |
252b5132 RH |
2030 | int length; |
2031 | ||
041ff4dd | 2032 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
2033 | if ((s = demand_copy_string (&length)) != 0) |
2034 | { | |
252b5132 | 2035 | int may_omit |
93e914b2 | 2036 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
2037 | |
2038 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 2039 | backquote. */ |
252b5132 RH |
2040 | if (flag_m68k_mri |
2041 | && *input_line_pointer == '\'' | |
2042 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
2043 | ++input_line_pointer; | |
2044 | ||
2045 | demand_empty_rest_of_line (); | |
041ff4dd | 2046 | if (!may_omit) |
c04f5787 | 2047 | s_app_file_string (s, appfile); |
252b5132 RH |
2048 | } |
2049 | } | |
2050 | ||
e9fc6c21 AO |
2051 | static int |
2052 | get_linefile_number (int *flag) | |
2053 | { | |
2054 | SKIP_WHITESPACE (); | |
2055 | ||
2056 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
2057 | return 0; | |
2058 | ||
2059 | *flag = get_absolute_expression (); | |
2060 | ||
2061 | return 1; | |
2062 | } | |
2063 | ||
252b5132 RH |
2064 | /* Handle the .appline pseudo-op. This is automatically generated by |
2065 | do_scrub_chars when a preprocessor # line comment is seen. This | |
2066 | default definition may be overridden by the object or CPU specific | |
2067 | pseudo-ops. */ | |
2068 | ||
2069 | void | |
93e914b2 | 2070 | s_app_line (int appline) |
252b5132 | 2071 | { |
e9fc6c21 | 2072 | char *file = NULL; |
252b5132 RH |
2073 | int l; |
2074 | ||
2075 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
2076 | if (appline) |
2077 | l = get_absolute_expression (); | |
2078 | else if (!get_linefile_number (&l)) | |
2079 | { | |
2080 | ignore_rest_of_line (); | |
2081 | return; | |
2082 | } | |
2083 | ||
2084 | l--; | |
47837f8e NC |
2085 | |
2086 | if (l < -1) | |
252b5132 | 2087 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
2088 | Besides, it's silly. GCC however will generate a line number of |
2089 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
2090 | ||
fa94de6b | 2091 | # 0 "<built-in>" |
47837f8e NC |
2092 | |
2093 | We do not want to barf on this, especially since such files are used | |
2094 | in the GCC and GDB testsuites. So we check for negative line numbers | |
2095 | rather than non-positive line numbers. */ | |
0e389e77 | 2096 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 2097 | l + 1); |
252b5132 RH |
2098 | else |
2099 | { | |
93e914b2 | 2100 | int flags = 0; |
93e914b2 AO |
2101 | int length = 0; |
2102 | ||
2103 | if (!appline) | |
2104 | { | |
e9fc6c21 AO |
2105 | SKIP_WHITESPACE (); |
2106 | ||
2107 | if (*input_line_pointer == '"') | |
2108 | file = demand_copy_string (&length); | |
93e914b2 AO |
2109 | |
2110 | if (file) | |
2111 | { | |
2112 | int this_flag; | |
2113 | ||
e9fc6c21 | 2114 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
2115 | switch (this_flag) |
2116 | { | |
2117 | /* From GCC's cpp documentation: | |
2118 | 1: start of a new file. | |
2119 | 2: returning to a file after having included | |
fa94de6b | 2120 | another file. |
93e914b2 AO |
2121 | 3: following text comes from a system header file. |
2122 | 4: following text should be treated as extern "C". | |
2123 | ||
2124 | 4 is nonsensical for the assembler; 3, we don't | |
2125 | care about, so we ignore it just in case a | |
2126 | system header file is included while | |
2127 | preprocessing assembly. So 1 and 2 are all we | |
2128 | care about, and they are mutually incompatible. | |
2129 | new_logical_line_flags() demands this. */ | |
2130 | case 1: | |
2131 | case 2: | |
2132 | if (flags && flags != (1 << this_flag)) | |
2133 | as_warn (_("incompatible flag %i in line directive"), | |
2134 | this_flag); | |
2135 | else | |
2136 | flags |= 1 << this_flag; | |
2137 | break; | |
2138 | ||
2139 | case 3: | |
2140 | case 4: | |
2141 | /* We ignore these. */ | |
2142 | break; | |
2143 | ||
2144 | default: | |
2145 | as_warn (_("unsupported flag %i in line directive"), | |
2146 | this_flag); | |
2147 | break; | |
2148 | } | |
e9fc6c21 AO |
2149 | |
2150 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
2151 | file = 0; | |
93e914b2 AO |
2152 | } |
2153 | } | |
2154 | ||
e9fc6c21 AO |
2155 | if (appline || file) |
2156 | { | |
2157 | new_logical_line_flags (file, l, flags); | |
252b5132 | 2158 | #ifdef LISTING |
e9fc6c21 AO |
2159 | if (listing) |
2160 | listing_source_line (l); | |
252b5132 | 2161 | #endif |
e9fc6c21 | 2162 | } |
252b5132 | 2163 | } |
e9fc6c21 AO |
2164 | if (appline || file) |
2165 | demand_empty_rest_of_line (); | |
2166 | else | |
2167 | ignore_rest_of_line (); | |
252b5132 RH |
2168 | } |
2169 | ||
2170 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
2171 | read_a_source_file. */ | |
2172 | ||
2173 | void | |
39e6acbd | 2174 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2175 | { |
2176 | if (flag_mri) | |
2177 | { | |
2178 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 2179 | but we don't support that. */ |
252b5132 | 2180 | SKIP_WHITESPACE (); |
041ff4dd | 2181 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2182 | && *input_line_pointer != '*' |
2183 | && *input_line_pointer != '!') | |
2184 | as_warn (_("start address not supported")); | |
2185 | } | |
2186 | } | |
2187 | ||
2188 | /* Handle the .err pseudo-op. */ | |
2189 | ||
2190 | void | |
39e6acbd | 2191 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2192 | { |
2193 | as_bad (_(".err encountered")); | |
2194 | demand_empty_rest_of_line (); | |
d190d046 HPN |
2195 | } |
2196 | ||
2197 | /* Handle the .error and .warning pseudo-ops. */ | |
2198 | ||
2199 | void | |
2200 | s_errwarn (int err) | |
2201 | { | |
2202 | int len; | |
2203 | /* The purpose for the conditional assignment is not to | |
2204 | internationalize the directive itself, but that we need a | |
2205 | self-contained message, one that can be passed like the | |
2206 | demand_copy_C_string return value, and with no assumption on the | |
2207 | location of the name of the directive within the message. */ | |
6d4af3c2 | 2208 | const char *msg |
d190d046 HPN |
2209 | = (err ? _(".error directive invoked in source file") |
2210 | : _(".warning directive invoked in source file")); | |
2211 | ||
2212 | if (!is_it_end_of_statement ()) | |
2213 | { | |
2214 | if (*input_line_pointer != '\"') | |
2215 | { | |
2216 | as_bad (_("%s argument must be a string"), | |
2217 | err ? ".error" : ".warning"); | |
40a4d956 | 2218 | ignore_rest_of_line (); |
d190d046 HPN |
2219 | return; |
2220 | } | |
2221 | ||
2222 | msg = demand_copy_C_string (&len); | |
2223 | if (msg == NULL) | |
2224 | return; | |
2225 | } | |
2226 | ||
2227 | if (err) | |
2228 | as_bad ("%s", msg); | |
2229 | else | |
2230 | as_warn ("%s", msg); | |
2231 | demand_empty_rest_of_line (); | |
252b5132 RH |
2232 | } |
2233 | ||
2234 | /* Handle the MRI fail pseudo-op. */ | |
2235 | ||
2236 | void | |
39e6acbd | 2237 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2238 | { |
2239 | offsetT temp; | |
2240 | char *stop = NULL; | |
fb25138b | 2241 | char stopc = 0; |
252b5132 RH |
2242 | |
2243 | if (flag_mri) | |
2244 | stop = mri_comment_field (&stopc); | |
2245 | ||
2246 | temp = get_absolute_expression (); | |
2247 | if (temp >= 500) | |
2248 | as_warn (_(".fail %ld encountered"), (long) temp); | |
2249 | else | |
2250 | as_bad (_(".fail %ld encountered"), (long) temp); | |
2251 | ||
2252 | demand_empty_rest_of_line (); | |
2253 | ||
2254 | if (flag_mri) | |
2255 | mri_comment_end (stop, stopc); | |
2256 | } | |
2257 | ||
041ff4dd | 2258 | void |
39e6acbd | 2259 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2260 | { |
2261 | expressionS rep_exp; | |
2262 | long size = 1; | |
3d540e93 | 2263 | long fill = 0; |
252b5132 RH |
2264 | char *p; |
2265 | ||
2266 | #ifdef md_flush_pending_output | |
2267 | md_flush_pending_output (); | |
2268 | #endif | |
2269 | ||
cc3f603a JM |
2270 | #ifdef md_cons_align |
2271 | md_cons_align (1); | |
2272 | #endif | |
2273 | ||
4f2358bc | 2274 | expression (&rep_exp); |
252b5132 RH |
2275 | if (*input_line_pointer == ',') |
2276 | { | |
2277 | input_line_pointer++; | |
2278 | size = get_absolute_expression (); | |
2279 | if (*input_line_pointer == ',') | |
2280 | { | |
2281 | input_line_pointer++; | |
2282 | fill = get_absolute_expression (); | |
2283 | } | |
2284 | } | |
2285 | ||
2286 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
2287 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
2288 | if (size > BSD_FILL_SIZE_CROCK_8) | |
2289 | { | |
0e389e77 | 2290 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
2291 | size = BSD_FILL_SIZE_CROCK_8; |
2292 | } | |
2293 | if (size < 0) | |
2294 | { | |
0e389e77 | 2295 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
2296 | size = 0; |
2297 | } | |
2298 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
2299 | { | |
2300 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 2301 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
2302 | size = 0; |
2303 | } | |
2304 | ||
2305 | if (size && !need_pass_2) | |
2306 | { | |
ec9ab52c JB |
2307 | if (now_seg == absolute_section) |
2308 | { | |
2309 | if (rep_exp.X_op != O_constant) | |
2310 | as_bad (_("non-constant fill count for absolute section")); | |
2311 | else if (fill && rep_exp.X_add_number != 0) | |
2312 | as_bad (_("attempt to fill absolute section with non-zero value")); | |
2313 | abs_section_offset += rep_exp.X_add_number * size; | |
2314 | } | |
2315 | else if (fill | |
2316 | && (rep_exp.X_op != O_constant || rep_exp.X_add_number != 0) | |
2317 | && in_bss ()) | |
2318 | as_bad (_("attempt to fill section `%s' with non-zero value"), | |
2319 | segment_name (now_seg)); | |
2320 | ||
252b5132 RH |
2321 | if (rep_exp.X_op == O_constant) |
2322 | { | |
2323 | p = frag_var (rs_fill, (int) size, (int) size, | |
2324 | (relax_substateT) 0, (symbolS *) 0, | |
2325 | (offsetT) rep_exp.X_add_number, | |
2326 | (char *) 0); | |
2327 | } | |
2328 | else | |
2329 | { | |
2330 | /* We don't have a constant repeat count, so we can't use | |
2331 | rs_fill. We can get the same results out of rs_space, | |
2332 | but its argument is in bytes, so we must multiply the | |
2333 | repeat count by size. */ | |
2334 | ||
2335 | symbolS *rep_sym; | |
2336 | rep_sym = make_expr_symbol (&rep_exp); | |
2337 | if (size != 1) | |
2338 | { | |
2339 | expressionS size_exp; | |
2340 | size_exp.X_op = O_constant; | |
2341 | size_exp.X_add_number = size; | |
2342 | ||
2343 | rep_exp.X_op = O_multiply; | |
2344 | rep_exp.X_add_symbol = rep_sym; | |
2345 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
2346 | rep_exp.X_add_number = 0; | |
2347 | rep_sym = make_expr_symbol (&rep_exp); | |
2348 | } | |
2349 | ||
2350 | p = frag_var (rs_space, (int) size, (int) size, | |
2351 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
2352 | } | |
f0e652b4 | 2353 | |
252b5132 | 2354 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2355 | |
252b5132 | 2356 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2357 | flavoured AS. The following bizarre behaviour is to be |
2358 | compatible with above. I guess they tried to take up to 8 | |
2359 | bytes from a 4-byte expression and they forgot to sign | |
2360 | extend. */ | |
252b5132 RH |
2361 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2362 | md_number_to_chars (p, (valueT) fill, | |
2363 | (size > BSD_FILL_SIZE_CROCK_4 | |
2364 | ? BSD_FILL_SIZE_CROCK_4 | |
2365 | : (int) size)); | |
2366 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2367 | but emits no error message because it seems a legal thing to do. |
2368 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2369 | compiler. */ |
252b5132 RH |
2370 | } |
2371 | demand_empty_rest_of_line (); | |
2372 | } | |
2373 | ||
041ff4dd | 2374 | void |
39e6acbd | 2375 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2376 | { |
2377 | char *name; | |
2378 | int c; | |
2379 | symbolS *symbolP; | |
2380 | char *stop = NULL; | |
fb25138b | 2381 | char stopc = 0; |
252b5132 RH |
2382 | |
2383 | if (flag_mri) | |
2384 | stop = mri_comment_field (&stopc); | |
2385 | ||
2386 | do | |
2387 | { | |
7bfd842d NC |
2388 | if ((name = read_symbol_name ()) == NULL) |
2389 | return; | |
2390 | ||
252b5132 | 2391 | symbolP = symbol_find_or_make (name); |
58b5739a RH |
2392 | S_SET_EXTERNAL (symbolP); |
2393 | ||
252b5132 | 2394 | SKIP_WHITESPACE (); |
58b5739a | 2395 | c = *input_line_pointer; |
252b5132 RH |
2396 | if (c == ',') |
2397 | { | |
2398 | input_line_pointer++; | |
2399 | SKIP_WHITESPACE (); | |
0e389e77 | 2400 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2401 | c = '\n'; |
2402 | } | |
7bfd842d NC |
2403 | |
2404 | free (name); | |
252b5132 RH |
2405 | } |
2406 | while (c == ','); | |
2407 | ||
2408 | demand_empty_rest_of_line (); | |
2409 | ||
2410 | if (flag_mri) | |
2411 | mri_comment_end (stop, stopc); | |
2412 | } | |
2413 | ||
2414 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2415 | ||
2416 | void | |
39e6acbd | 2417 | s_irp (int irpc) |
252b5132 | 2418 | { |
3b4dbbbf TS |
2419 | char * eol; |
2420 | const char * file; | |
252b5132 RH |
2421 | unsigned int line; |
2422 | sb s; | |
2423 | const char *err; | |
2424 | sb out; | |
2425 | ||
3b4dbbbf | 2426 | file = as_where (&line); |
252b5132 | 2427 | |
40a4d956 | 2428 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2429 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2430 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2431 | input_line_pointer = eol; | |
252b5132 RH |
2432 | |
2433 | sb_new (&out); | |
2434 | ||
7592cfd7 | 2435 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2436 | if (err != NULL) |
2437 | as_bad_where (file, line, "%s", err); | |
2438 | ||
2439 | sb_kill (&s); | |
2440 | ||
9f10757c | 2441 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2442 | sb_kill (&out); |
2443 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2444 | } | |
2445 | ||
2446 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2447 | the section to only be linked once. However, this is not supported | |
2448 | by most object file formats. This takes an optional argument, | |
2449 | which is what to do about duplicates. */ | |
2450 | ||
2451 | void | |
39e6acbd | 2452 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2453 | { |
2454 | enum linkonce_type type; | |
2455 | ||
2456 | SKIP_WHITESPACE (); | |
2457 | ||
2458 | type = LINKONCE_DISCARD; | |
2459 | ||
041ff4dd | 2460 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2461 | { |
2462 | char *s; | |
2463 | char c; | |
2464 | ||
d02603dc | 2465 | c = get_symbol_name (& s); |
252b5132 RH |
2466 | if (strcasecmp (s, "discard") == 0) |
2467 | type = LINKONCE_DISCARD; | |
2468 | else if (strcasecmp (s, "one_only") == 0) | |
2469 | type = LINKONCE_ONE_ONLY; | |
2470 | else if (strcasecmp (s, "same_size") == 0) | |
2471 | type = LINKONCE_SAME_SIZE; | |
2472 | else if (strcasecmp (s, "same_contents") == 0) | |
2473 | type = LINKONCE_SAME_CONTENTS; | |
2474 | else | |
2475 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2476 | ||
d02603dc | 2477 | (void) restore_line_pointer (c); |
252b5132 RH |
2478 | } |
2479 | ||
2480 | #ifdef obj_handle_link_once | |
2481 | obj_handle_link_once (type); | |
2482 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2483 | { |
2484 | flagword flags; | |
2485 | ||
2486 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2487 | as_warn (_(".linkonce is not supported for this object file format")); | |
2488 | ||
fd361982 | 2489 | flags = bfd_section_flags (now_seg); |
252b5132 RH |
2490 | flags |= SEC_LINK_ONCE; |
2491 | switch (type) | |
2492 | { | |
2493 | default: | |
2494 | abort (); | |
2495 | case LINKONCE_DISCARD: | |
2496 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2497 | break; | |
2498 | case LINKONCE_ONE_ONLY: | |
2499 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2500 | break; | |
2501 | case LINKONCE_SAME_SIZE: | |
2502 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2503 | break; | |
2504 | case LINKONCE_SAME_CONTENTS: | |
2505 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2506 | break; | |
2507 | } | |
fd361982 | 2508 | if (!bfd_set_section_flags (now_seg, flags)) |
252b5132 RH |
2509 | as_bad (_("bfd_set_section_flags: %s"), |
2510 | bfd_errmsg (bfd_get_error ())); | |
2511 | } | |
252b5132 RH |
2512 | #endif /* ! defined (obj_handle_link_once) */ |
2513 | ||
2514 | demand_empty_rest_of_line (); | |
2515 | } | |
2516 | ||
e13bab5a | 2517 | void |
9136aa49 | 2518 | bss_alloc (symbolS *symbolP, addressT size, unsigned int align) |
252b5132 | 2519 | { |
e13bab5a | 2520 | char *pfrag; |
252b5132 RH |
2521 | segT current_seg = now_seg; |
2522 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2523 | segT bss_seg = bss_section; |
2524 | ||
252b5132 RH |
2525 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2526 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2527 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2528 | { | |
2529 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2530 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2531 | { |
2532 | bss_seg = subseg_new (".sbss", 1); | |
2533 | seg_info (bss_seg)->bss = 1; | |
a4dd6c97 | 2534 | if (!bfd_set_section_flags (bss_seg, SEC_ALLOC | SEC_SMALL_DATA)) |
252b5132 RH |
2535 | as_warn (_("error setting flags for \".sbss\": %s"), |
2536 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2537 | } |
2538 | } | |
2539 | #endif | |
e13bab5a | 2540 | subseg_set (bss_seg, 1); |
8684e216 | 2541 | |
9136aa49 | 2542 | if (align > OCTETS_PER_BYTE_POWER) |
041ff4dd | 2543 | { |
e13bab5a AM |
2544 | record_alignment (bss_seg, align); |
2545 | frag_align (align, 0, 0); | |
041ff4dd | 2546 | } |
252b5132 | 2547 | |
e13bab5a AM |
2548 | /* Detach from old frag. */ |
2549 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2550 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2551 | |
e13bab5a | 2552 | symbol_set_frag (symbolP, frag_now); |
5947daaf | 2553 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size * OCTETS_PER_BYTE, NULL); |
e13bab5a | 2554 | *pfrag = 0; |
f0e652b4 | 2555 | |
e13bab5a AM |
2556 | #ifdef S_SET_SIZE |
2557 | S_SET_SIZE (symbolP, size); | |
2558 | #endif | |
2559 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2560 | |
e13bab5a AM |
2561 | #ifdef OBJ_COFF |
2562 | /* The symbol may already have been created with a preceding | |
2563 | ".globl" directive -- be careful not to step on storage class | |
2564 | in that case. Otherwise, set it to static. */ | |
2565 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2566 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2567 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2568 | |
e13bab5a AM |
2569 | subseg_set (current_seg, current_subseg); |
2570 | } | |
f0e652b4 | 2571 | |
e13bab5a AM |
2572 | offsetT |
2573 | parse_align (int align_bytes) | |
2574 | { | |
2575 | expressionS exp; | |
2576 | addressT align; | |
252b5132 | 2577 | |
e13bab5a AM |
2578 | SKIP_WHITESPACE (); |
2579 | if (*input_line_pointer != ',') | |
2580 | { | |
2581 | no_align: | |
2582 | as_bad (_("expected alignment after size")); | |
2583 | ignore_rest_of_line (); | |
2584 | return -1; | |
2585 | } | |
f0e652b4 | 2586 | |
e13bab5a AM |
2587 | input_line_pointer++; |
2588 | SKIP_WHITESPACE (); | |
f0e652b4 | 2589 | |
e13bab5a AM |
2590 | align = get_absolute_expr (&exp); |
2591 | if (exp.X_op == O_absent) | |
2592 | goto no_align; | |
2593 | ||
2594 | if (!exp.X_unsigned) | |
2595 | { | |
2596 | as_warn (_("alignment negative; 0 assumed")); | |
2597 | align = 0; | |
041ff4dd | 2598 | } |
e13bab5a AM |
2599 | |
2600 | if (align_bytes && align != 0) | |
252b5132 | 2601 | { |
e13bab5a AM |
2602 | /* convert to a power of 2 alignment */ |
2603 | unsigned int alignp2 = 0; | |
2604 | while ((align & 1) == 0) | |
2605 | align >>= 1, ++alignp2; | |
2606 | if (align != 1) | |
252b5132 | 2607 | { |
e13bab5a AM |
2608 | as_bad (_("alignment not a power of 2")); |
2609 | ignore_rest_of_line (); | |
2610 | return -1; | |
252b5132 | 2611 | } |
e13bab5a | 2612 | align = alignp2; |
252b5132 | 2613 | } |
e13bab5a AM |
2614 | return align; |
2615 | } | |
252b5132 | 2616 | |
e13bab5a AM |
2617 | /* Called from s_comm_internal after symbol name and size have been |
2618 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2619 | 1 if this was a ".bss" directive which has a 3rd argument | |
2620 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2621 | with alignment in bytes. */ | |
252b5132 | 2622 | |
13c56984 | 2623 | symbolS * |
e13bab5a AM |
2624 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2625 | { | |
2626 | addressT align = 0; | |
252b5132 | 2627 | |
e13bab5a AM |
2628 | if (needs_align) |
2629 | { | |
2630 | align = parse_align (needs_align - 1); | |
2631 | if (align == (addressT) -1) | |
2632 | return NULL; | |
252b5132 RH |
2633 | } |
2634 | else | |
e13bab5a AM |
2635 | /* Assume some objects may require alignment on some systems. */ |
2636 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2637 | |
e13bab5a AM |
2638 | bss_alloc (symbolP, size, align); |
2639 | return symbolP; | |
041ff4dd | 2640 | } |
252b5132 RH |
2641 | |
2642 | void | |
39e6acbd | 2643 | s_lcomm (int needs_align) |
252b5132 | 2644 | { |
e13bab5a | 2645 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2646 | } |
2647 | ||
041ff4dd | 2648 | void |
39e6acbd | 2649 | s_lcomm_bytes (int needs_align) |
252b5132 | 2650 | { |
e13bab5a | 2651 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2652 | } |
2653 | ||
041ff4dd | 2654 | void |
39e6acbd | 2655 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2656 | { |
3d540e93 | 2657 | char *name; |
252b5132 | 2658 | expressionS exp; |
3d540e93 | 2659 | symbolS *symbolP; |
252b5132 | 2660 | |
041ff4dd | 2661 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
7bfd842d NC |
2662 | if ((name = read_symbol_name ()) == NULL) |
2663 | return; | |
f0e652b4 | 2664 | |
252b5132 RH |
2665 | if (*input_line_pointer != ',') |
2666 | { | |
0e389e77 | 2667 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 2668 | goto err_out; |
252b5132 | 2669 | } |
f0e652b4 | 2670 | |
252b5132 | 2671 | input_line_pointer++; |
9497f5ac | 2672 | expression_and_evaluate (&exp); |
f0e652b4 | 2673 | |
252b5132 RH |
2674 | if (exp.X_op != O_constant |
2675 | && exp.X_op != O_register) | |
2676 | { | |
2677 | as_bad (_("bad expression")); | |
7bfd842d | 2678 | goto err_out; |
252b5132 | 2679 | } |
f0e652b4 | 2680 | |
252b5132 RH |
2681 | symbolP = symbol_find_or_make (name); |
2682 | ||
86ebace2 | 2683 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2684 | { |
2685 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2686 | keep the "external" bit. */ |
252b5132 RH |
2687 | S_SET_SEGMENT (symbolP, |
2688 | (exp.X_op == O_constant | |
2689 | ? absolute_section | |
2690 | : reg_section)); | |
2691 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2692 | } | |
2693 | else | |
2694 | { | |
0e389e77 | 2695 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2696 | } |
f0e652b4 | 2697 | |
252b5132 | 2698 | demand_empty_rest_of_line (); |
7bfd842d NC |
2699 | free (name); |
2700 | return; | |
2701 | ||
2702 | err_out: | |
2703 | ignore_rest_of_line (); | |
2704 | free (name); | |
2705 | return; | |
041ff4dd | 2706 | } |
252b5132 | 2707 | |
0822d075 NC |
2708 | /* Read a line into an sb. Returns the character that ended the line |
2709 | or zero if there are no more lines. */ | |
252b5132 RH |
2710 | |
2711 | static int | |
7592cfd7 | 2712 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2713 | { |
40a4d956 | 2714 | char *eol; |
252b5132 RH |
2715 | |
2716 | if (input_line_pointer[-1] == '\n') | |
2717 | bump_line_counters (); | |
2718 | ||
2719 | if (input_line_pointer >= buffer_limit) | |
2720 | { | |
2721 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2722 | if (buffer_limit == 0) | |
2723 | return 0; | |
2724 | } | |
2725 | ||
7592cfd7 | 2726 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2727 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2728 | input_line_pointer = eol; | |
f0e652b4 | 2729 | |
0822d075 NC |
2730 | /* Don't skip multiple end-of-line characters, because that breaks support |
2731 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2732 | characters but isn't. Instead just skip one end of line character and | |
2733 | return the character skipped so that the caller can re-insert it if | |
2734 | necessary. */ | |
40a4d956 | 2735 | return *input_line_pointer++; |
252b5132 RH |
2736 | } |
2737 | ||
39a45edc | 2738 | static size_t |
7592cfd7 NC |
2739 | get_non_macro_line_sb (sb *line) |
2740 | { | |
2741 | return get_line_sb (line, 0); | |
2742 | } | |
2743 | ||
39a45edc | 2744 | static size_t |
7592cfd7 NC |
2745 | get_macro_line_sb (sb *line) |
2746 | { | |
2747 | return get_line_sb (line, 1); | |
2748 | } | |
2749 | ||
fea17916 | 2750 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2751 | |
2752 | void | |
39e6acbd | 2753 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2754 | { |
3b4dbbbf TS |
2755 | char *eol; |
2756 | const char * file; | |
252b5132 RH |
2757 | unsigned int line; |
2758 | sb s; | |
252b5132 RH |
2759 | const char *err; |
2760 | const char *name; | |
2761 | ||
3b4dbbbf | 2762 | file = as_where (&line); |
252b5132 | 2763 | |
40a4d956 | 2764 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2765 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2766 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2767 | input_line_pointer = eol; | |
252b5132 | 2768 | |
252b5132 | 2769 | if (line_label != NULL) |
360e86f1 JB |
2770 | { |
2771 | sb label; | |
d2ae702c | 2772 | size_t len; |
252b5132 | 2773 | |
d2ae702c L |
2774 | name = S_GET_NAME (line_label); |
2775 | len = strlen (name); | |
2776 | sb_build (&label, len); | |
2777 | sb_add_buffer (&label, name, len); | |
7592cfd7 | 2778 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2779 | sb_kill (&label); |
2780 | } | |
2781 | else | |
7592cfd7 | 2782 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2783 | if (err != NULL) |
02ddf156 | 2784 | as_bad_where (file, line, err, name); |
252b5132 RH |
2785 | else |
2786 | { | |
2787 | if (line_label != NULL) | |
2788 | { | |
5e75c3ab | 2789 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2790 | S_SET_VALUE (line_label, 0); |
2b47531b | 2791 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2792 | } |
2793 | ||
abd63a32 | 2794 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
32e4c1c2 | 2795 | && po_entry_find (po_hash, name) != NULL) |
041ff4dd | 2796 | || (!flag_m68k_mri |
252b5132 | 2797 | && *name == '.' |
32e4c1c2 | 2798 | && po_entry_find (po_hash, name + 1) != NULL)) |
02ddf156 JB |
2799 | as_warn_where (file, |
2800 | line, | |
2801 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2802 | name); |
2803 | } | |
2804 | ||
2805 | sb_kill (&s); | |
2806 | } | |
2807 | ||
2808 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2809 | expansion. */ | |
2810 | ||
2811 | void | |
39e6acbd | 2812 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2813 | { |
5808f4a6 NC |
2814 | if (macro_nest) |
2815 | { | |
2816 | cond_exit_macro (macro_nest); | |
2817 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2818 | } | |
2819 | else | |
2820 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2821 | } |
2822 | ||
2823 | /* Switch in and out of MRI mode. */ | |
2824 | ||
2825 | void | |
39e6acbd | 2826 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2827 | { |
3d540e93 NC |
2828 | int on; |
2829 | #ifdef MRI_MODE_CHANGE | |
2830 | int old_flag; | |
2831 | #endif | |
252b5132 RH |
2832 | |
2833 | on = get_absolute_expression (); | |
3d540e93 | 2834 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2835 | old_flag = flag_mri; |
3d540e93 | 2836 | #endif |
252b5132 RH |
2837 | if (on != 0) |
2838 | { | |
2839 | flag_mri = 1; | |
2840 | #ifdef TC_M68K | |
2841 | flag_m68k_mri = 1; | |
2842 | #endif | |
2843 | macro_mri_mode (1); | |
2844 | } | |
2845 | else | |
2846 | { | |
2847 | flag_mri = 0; | |
abd63a32 | 2848 | #ifdef TC_M68K |
252b5132 | 2849 | flag_m68k_mri = 0; |
abd63a32 | 2850 | #endif |
252b5132 RH |
2851 | macro_mri_mode (0); |
2852 | } | |
2853 | ||
2854 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2855 | update the operator rankings. */ | |
2856 | expr_set_precedence (); | |
2857 | ||
2858 | #ifdef MRI_MODE_CHANGE | |
2859 | if (on != old_flag) | |
2860 | MRI_MODE_CHANGE (on); | |
2861 | #endif | |
2862 | ||
2863 | demand_empty_rest_of_line (); | |
2864 | } | |
2865 | ||
2866 | /* Handle changing the location counter. */ | |
2867 | ||
2868 | static void | |
39e6acbd | 2869 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 | 2870 | { |
259af69e AM |
2871 | if (segment != now_seg |
2872 | && segment != absolute_section | |
2873 | && segment != expr_section) | |
0e389e77 | 2874 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2875 | |
2876 | if (now_seg == absolute_section) | |
2877 | { | |
2878 | if (fill != 0) | |
2879 | as_warn (_("ignoring fill value in absolute section")); | |
2880 | if (exp->X_op != O_constant) | |
2881 | { | |
2882 | as_bad (_("only constant offsets supported in absolute section")); | |
2883 | exp->X_add_number = 0; | |
2884 | } | |
2885 | abs_section_offset = exp->X_add_number; | |
2886 | } | |
2887 | else | |
2888 | { | |
2889 | char *p; | |
2289f85d AM |
2890 | symbolS *sym = exp->X_add_symbol; |
2891 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2892 | |
ec9ab52c JB |
2893 | if (fill && in_bss ()) |
2894 | as_warn (_("ignoring fill value in section `%s'"), | |
2895 | segment_name (now_seg)); | |
2896 | ||
2289f85d AM |
2897 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2898 | { | |
2899 | /* Handle complex expressions. */ | |
2900 | sym = make_expr_symbol (exp); | |
2901 | off = 0; | |
2902 | } | |
2903 | ||
2904 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2905 | *p = fill; |
2906 | } | |
2907 | } | |
2908 | ||
041ff4dd | 2909 | void |
39e6acbd | 2910 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2911 | { |
3d540e93 | 2912 | segT segment; |
252b5132 | 2913 | expressionS exp; |
3d540e93 | 2914 | long temp_fill; |
252b5132 RH |
2915 | |
2916 | #ifdef md_flush_pending_output | |
2917 | md_flush_pending_output (); | |
2918 | #endif | |
2919 | ||
2920 | /* The m68k MRI assembler has a different meaning for .org. It | |
2921 | means to create an absolute section at a given address. We can't | |
2922 | support that--use a linker script instead. */ | |
2923 | if (flag_m68k_mri) | |
2924 | { | |
2925 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2926 | ignore_rest_of_line (); | |
2927 | return; | |
2928 | } | |
2929 | ||
2930 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2931 | thing as a sub-segment-relative origin. Any absolute origin is | |
2932 | given a warning, then assumed to be segment-relative. Any | |
2933 | segmented origin expression ("foo+42") had better be in the right | |
2934 | segment or the .org is ignored. | |
2935 | ||
2936 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2937 | we never know sub-segment sizes when we are reading code. BSD | |
2938 | will crash trying to emit negative numbers of filler bytes in | |
2939 | certain .orgs. We don't crash, but see as-write for that code. | |
2940 | ||
2941 | Don't make frag if need_pass_2==1. */ | |
2942 | segment = get_known_segmented_expression (&exp); | |
2943 | if (*input_line_pointer == ',') | |
2944 | { | |
2945 | input_line_pointer++; | |
2946 | temp_fill = get_absolute_expression (); | |
2947 | } | |
2948 | else | |
2949 | temp_fill = 0; | |
2950 | ||
2951 | if (!need_pass_2) | |
2952 | do_org (segment, &exp, temp_fill); | |
2953 | ||
2954 | demand_empty_rest_of_line (); | |
041ff4dd | 2955 | } |
252b5132 RH |
2956 | |
2957 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2958 | called by the obj-format routine which handles section changing | |
2959 | when in MRI mode. It will create a new section, and return it. It | |
2960 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2961 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2962 | |
2963 | void | |
39e6acbd | 2964 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2965 | { |
2966 | #ifdef TC_M68K | |
2967 | ||
2968 | char *name; | |
2969 | char c; | |
2970 | segT seg; | |
2971 | ||
2972 | SKIP_WHITESPACE (); | |
041ff4dd | 2973 | |
252b5132 | 2974 | name = input_line_pointer; |
3882b010 | 2975 | if (!ISDIGIT (*name)) |
d02603dc | 2976 | c = get_symbol_name (& name); |
252b5132 RH |
2977 | else |
2978 | { | |
2979 | do | |
2980 | { | |
2981 | ++input_line_pointer; | |
2982 | } | |
3882b010 | 2983 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2984 | |
252b5132 RH |
2985 | c = *input_line_pointer; |
2986 | *input_line_pointer = '\0'; | |
2987 | } | |
2988 | ||
2989 | name = xstrdup (name); | |
2990 | ||
d02603dc | 2991 | c = restore_line_pointer (c); |
252b5132 RH |
2992 | |
2993 | seg = subseg_new (name, 0); | |
2994 | ||
d02603dc | 2995 | if (c == ',') |
252b5132 | 2996 | { |
9136aa49 | 2997 | unsigned int align; |
252b5132 RH |
2998 | |
2999 | ++input_line_pointer; | |
3000 | align = get_absolute_expression (); | |
3001 | record_alignment (seg, align); | |
3002 | } | |
3003 | ||
3004 | *type = 'C'; | |
3005 | if (*input_line_pointer == ',') | |
3006 | { | |
3007 | c = *++input_line_pointer; | |
3882b010 | 3008 | c = TOUPPER (c); |
252b5132 RH |
3009 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
3010 | *type = c; | |
3011 | else | |
3012 | as_bad (_("unrecognized section type")); | |
3013 | ++input_line_pointer; | |
3014 | ||
252b5132 RH |
3015 | { |
3016 | flagword flags; | |
3017 | ||
3018 | flags = SEC_NO_FLAGS; | |
3019 | if (*type == 'C') | |
3020 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
3021 | else if (*type == 'D' || *type == 'M') | |
3022 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
3023 | else if (*type == 'R') | |
3024 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
3025 | if (flags != SEC_NO_FLAGS) | |
3026 | { | |
fd361982 | 3027 | if (!bfd_set_section_flags (seg, flags)) |
252b5132 | 3028 | as_warn (_("error setting flags for \"%s\": %s"), |
fd361982 | 3029 | bfd_section_name (seg), |
252b5132 RH |
3030 | bfd_errmsg (bfd_get_error ())); |
3031 | } | |
3032 | } | |
252b5132 RH |
3033 | } |
3034 | ||
3035 | /* Ignore the HP type. */ | |
3036 | if (*input_line_pointer == ',') | |
3037 | input_line_pointer += 2; | |
3038 | ||
3039 | demand_empty_rest_of_line (); | |
3040 | ||
3041 | #else /* ! TC_M68K */ | |
252b5132 RH |
3042 | /* The MRI assembler seems to use different forms of .sect for |
3043 | different targets. */ | |
3044 | as_bad ("MRI mode not supported for this target"); | |
3045 | ignore_rest_of_line (); | |
252b5132 RH |
3046 | #endif /* ! TC_M68K */ |
3047 | } | |
3048 | ||
3049 | /* Handle the .print pseudo-op. */ | |
3050 | ||
3051 | void | |
39e6acbd | 3052 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3053 | { |
3054 | char *s; | |
3055 | int len; | |
3056 | ||
3057 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
3058 | if (s != NULL) |
3059 | printf ("%s\n", s); | |
252b5132 RH |
3060 | demand_empty_rest_of_line (); |
3061 | } | |
3062 | ||
3063 | /* Handle the .purgem pseudo-op. */ | |
3064 | ||
3065 | void | |
39e6acbd | 3066 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3067 | { |
3068 | if (is_it_end_of_statement ()) | |
3069 | { | |
3070 | demand_empty_rest_of_line (); | |
3071 | return; | |
3072 | } | |
3073 | ||
3074 | do | |
3075 | { | |
3076 | char *name; | |
3077 | char c; | |
3078 | ||
3079 | SKIP_WHITESPACE (); | |
d02603dc | 3080 | c = get_symbol_name (& name); |
252b5132 RH |
3081 | delete_macro (name); |
3082 | *input_line_pointer = c; | |
d02603dc | 3083 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
3084 | } |
3085 | while (*input_line_pointer++ == ','); | |
3086 | ||
3087 | --input_line_pointer; | |
3088 | demand_empty_rest_of_line (); | |
3089 | } | |
3090 | ||
057f53c1 | 3091 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 3092 | |
057f53c1 JB |
3093 | static void |
3094 | s_bad_end (int endr) | |
7f28ab9d | 3095 | { |
cc643b88 | 3096 | as_warn (_(".end%c encountered without preceding %s"), |
057f53c1 JB |
3097 | endr ? 'r' : 'm', |
3098 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
3099 | demand_empty_rest_of_line (); |
3100 | } | |
3101 | ||
3102 | /* Handle the .rept pseudo-op. */ | |
3103 | ||
252b5132 | 3104 | void |
39e6acbd | 3105 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3106 | { |
808811a3 | 3107 | size_t count; |
252b5132 | 3108 | |
808811a3 | 3109 | count = (size_t) get_absolute_expression (); |
252b5132 | 3110 | |
041ff4dd | 3111 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
3112 | } |
3113 | ||
3114 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 3115 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
3116 | |
3117 | void | |
808811a3 | 3118 | do_repeat (size_t count, const char *start, const char *end) |
6dc19fc4 TW |
3119 | { |
3120 | sb one; | |
3121 | sb many; | |
3122 | ||
808811a3 NC |
3123 | if (((ssize_t) count) < 0) |
3124 | { | |
3125 | as_bad (_("negative count for %s - ignored"), start); | |
3126 | count = 0; | |
3127 | } | |
3128 | ||
252b5132 | 3129 | sb_new (&one); |
7592cfd7 | 3130 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 3131 | { |
6dc19fc4 | 3132 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
3133 | return; |
3134 | } | |
3135 | ||
d2ae702c | 3136 | sb_build (&many, count * one.len); |
252b5132 RH |
3137 | while (count-- > 0) |
3138 | sb_add_sb (&many, &one); | |
3139 | ||
3140 | sb_kill (&one); | |
3141 | ||
9f10757c | 3142 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
3143 | sb_kill (&many); |
3144 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3145 | } | |
3146 | ||
c7927a3c | 3147 | /* Like do_repeat except that any text matching EXPANDER in the |
33eaf5de | 3148 | block is replaced by the iteration count. */ |
c7927a3c NC |
3149 | |
3150 | void | |
808811a3 | 3151 | do_repeat_with_expander (size_t count, |
c7927a3c NC |
3152 | const char * start, |
3153 | const char * end, | |
3154 | const char * expander) | |
3155 | { | |
3156 | sb one; | |
3157 | sb many; | |
3158 | ||
808811a3 NC |
3159 | if (((ssize_t) count) < 0) |
3160 | { | |
3161 | as_bad (_("negative count for %s - ignored"), start); | |
3162 | count = 0; | |
3163 | } | |
3164 | ||
c7927a3c NC |
3165 | sb_new (&one); |
3166 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3167 | { | |
3168 | as_bad (_("%s without %s"), start, end); | |
3169 | return; | |
3170 | } | |
3171 | ||
3172 | sb_new (&many); | |
3173 | ||
3174 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3175 | { | |
3176 | while (count -- > 0) | |
3177 | { | |
3178 | int len; | |
3179 | char * sub; | |
3180 | sb processed; | |
3181 | ||
d2ae702c | 3182 | sb_build (& processed, one.len); |
c7927a3c NC |
3183 | sb_add_sb (& processed, & one); |
3184 | sub = strstr (processed.ptr, expander); | |
808811a3 | 3185 | len = sprintf (sub, "%lu", (unsigned long) count); |
c7927a3c | 3186 | gas_assert (len < 8); |
9dcbfff1 AS |
3187 | memmove (sub + len, sub + 8, |
3188 | processed.ptr + processed.len - (sub + 8)); | |
c7927a3c NC |
3189 | processed.len -= (8 - len); |
3190 | sb_add_sb (& many, & processed); | |
3191 | sb_kill (& processed); | |
3192 | } | |
3193 | } | |
3194 | else | |
3195 | while (count-- > 0) | |
3196 | sb_add_sb (&many, &one); | |
3197 | ||
3198 | sb_kill (&one); | |
3199 | ||
3200 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3201 | sb_kill (&many); | |
3202 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3203 | } | |
3204 | ||
6dc19fc4 TW |
3205 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3206 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3207 | are properly nested. |
6dc19fc4 TW |
3208 | |
3209 | This function makes it easier to implement a premature "break" out of the | |
3210 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3211 | such as line substitutions. */ |
6dc19fc4 TW |
3212 | |
3213 | void | |
39e6acbd | 3214 | end_repeat (int extra) |
6dc19fc4 TW |
3215 | { |
3216 | cond_exit_macro (macro_nest); | |
3217 | while (extra-- >= 0) | |
3218 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3219 | } | |
3220 | ||
be95a9c1 | 3221 | static void |
9497f5ac | 3222 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3223 | { |
3224 | symbolS *symbolP; | |
3225 | ||
3226 | if (name[0] == '.' && name[1] == '\0') | |
3227 | { | |
3228 | /* Turn '. = mumble' into a .org mumble. */ | |
3229 | segT segment; | |
3230 | expressionS exp; | |
3231 | ||
3232 | segment = get_known_segmented_expression (&exp); | |
3233 | ||
3234 | if (!need_pass_2) | |
3235 | do_org (segment, &exp, 0); | |
3236 | ||
3237 | return; | |
3238 | } | |
3239 | ||
3240 | if ((symbolP = symbol_find (name)) == NULL | |
3241 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3242 | { | |
3243 | symbolP = symbol_find_or_make (name); | |
3244 | #ifndef NO_LISTING | |
3245 | /* When doing symbol listings, play games with dummy fragments living | |
3246 | outside the normal fragment chain to record the file and line info | |
3247 | for this symbol. */ | |
3248 | if (listing & LISTING_SYMBOLS) | |
3249 | { | |
3250 | extern struct list_info_struct *listing_tail; | |
8860a416 | 3251 | fragS *dummy_frag = XCNEW (fragS); |
be95a9c1 AM |
3252 | dummy_frag->line = listing_tail; |
3253 | dummy_frag->fr_symbol = symbolP; | |
3254 | symbol_set_frag (symbolP, dummy_frag); | |
3255 | } | |
3256 | #endif | |
76bd66cf | 3257 | #if defined (OBJ_COFF) && !defined (TE_PE) |
31d20a21 AM |
3258 | /* "set" symbols are local unless otherwise specified. */ |
3259 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3260 | #endif |
3261 | } | |
3262 | ||
6a2b6326 | 3263 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac | 3264 | { |
9497f5ac | 3265 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) |
6885131b | 3266 | && !S_CAN_BE_REDEFINED (symbolP)) |
9497f5ac NC |
3267 | { |
3268 | as_bad (_("symbol `%s' is already defined"), name); | |
62bd6b5f AM |
3269 | ignore_rest_of_line (); |
3270 | input_line_pointer--; | |
3271 | return; | |
9497f5ac NC |
3272 | } |
3273 | /* If the symbol is volatile, copy the symbol and replace the | |
3274 | original with the copy, so that previous uses of the symbol will | |
3275 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3276 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3277 | symbolP = symbol_clone (symbolP, 1); |
3278 | } | |
3279 | ||
3280 | if (mode == 0) | |
3281 | S_SET_VOLATILE (symbolP); | |
3282 | else if (mode < 0) | |
3283 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3284 | |
3285 | pseudo_set (symbolP); | |
be95a9c1 AM |
3286 | } |
3287 | ||
9497f5ac NC |
3288 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3289 | then this is .equiv, and it is an error if the symbol is already | |
3290 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3291 | reference. */ | |
252b5132 | 3292 | |
041ff4dd | 3293 | void |
39e6acbd | 3294 | s_set (int equiv) |
252b5132 | 3295 | { |
be95a9c1 | 3296 | char *name; |
252b5132 | 3297 | |
041ff4dd NC |
3298 | /* Especial apologies for the random logic: |
3299 | this just grew, and could be parsed much more simply! | |
3300 | Dean in haste. */ | |
7bfd842d NC |
3301 | if ((name = read_symbol_name ()) == NULL) |
3302 | return; | |
252b5132 RH |
3303 | |
3304 | if (*input_line_pointer != ',') | |
3305 | { | |
0e389e77 | 3306 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 | 3307 | ignore_rest_of_line (); |
7bfd842d | 3308 | free (name); |
252b5132 RH |
3309 | return; |
3310 | } | |
3311 | ||
3312 | input_line_pointer++; | |
be95a9c1 | 3313 | assign_symbol (name, equiv); |
31d20a21 | 3314 | demand_empty_rest_of_line (); |
7bfd842d | 3315 | free (name); |
041ff4dd | 3316 | } |
252b5132 | 3317 | |
041ff4dd | 3318 | void |
39e6acbd | 3319 | s_space (int mult) |
252b5132 RH |
3320 | { |
3321 | expressionS exp; | |
3322 | expressionS val; | |
3323 | char *p = 0; | |
3324 | char *stop = NULL; | |
fb25138b | 3325 | char stopc = 0; |
252b5132 RH |
3326 | int bytes; |
3327 | ||
3328 | #ifdef md_flush_pending_output | |
3329 | md_flush_pending_output (); | |
3330 | #endif | |
3331 | ||
cc3f603a JM |
3332 | #ifdef md_cons_align |
3333 | md_cons_align (1); | |
3334 | #endif | |
3335 | ||
252b5132 RH |
3336 | if (flag_mri) |
3337 | stop = mri_comment_field (&stopc); | |
3338 | ||
3339 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3340 | this is ds.b. */ | |
3341 | if (flag_m68k_mri && mult > 1) | |
3342 | { | |
3343 | if (now_seg == absolute_section) | |
3344 | { | |
3345 | abs_section_offset += abs_section_offset & 1; | |
3346 | if (line_label != NULL) | |
3347 | S_SET_VALUE (line_label, abs_section_offset); | |
3348 | } | |
3349 | else if (mri_common_symbol != NULL) | |
3350 | { | |
91d6fa6a | 3351 | valueT mri_val; |
252b5132 | 3352 | |
91d6fa6a NC |
3353 | mri_val = S_GET_VALUE (mri_common_symbol); |
3354 | if ((mri_val & 1) != 0) | |
252b5132 | 3355 | { |
91d6fa6a | 3356 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3357 | if (line_label != NULL) |
3358 | { | |
2b47531b ILT |
3359 | expressionS *symexp; |
3360 | ||
3361 | symexp = symbol_get_value_expression (line_label); | |
3362 | know (symexp->X_op == O_symbol); | |
3363 | know (symexp->X_add_symbol == mri_common_symbol); | |
3364 | symexp->X_add_number += 1; | |
252b5132 RH |
3365 | } |
3366 | } | |
3367 | } | |
3368 | else | |
3369 | { | |
3370 | do_align (1, (char *) NULL, 0, 0); | |
3371 | if (line_label != NULL) | |
3372 | { | |
2b47531b | 3373 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3374 | S_SET_VALUE (line_label, frag_now_fix ()); |
3375 | } | |
3376 | } | |
3377 | } | |
3378 | ||
3379 | bytes = mult; | |
3380 | ||
3381 | expression (&exp); | |
3382 | ||
3383 | SKIP_WHITESPACE (); | |
3384 | if (*input_line_pointer == ',') | |
3385 | { | |
3386 | ++input_line_pointer; | |
3387 | expression (&val); | |
3388 | } | |
3389 | else | |
3390 | { | |
3391 | val.X_op = O_constant; | |
3392 | val.X_add_number = 0; | |
3393 | } | |
3394 | ||
ec9ab52c JB |
3395 | if ((val.X_op != O_constant |
3396 | || val.X_add_number < - 0x80 | |
3397 | || val.X_add_number > 0xff | |
3398 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3399 | && (now_seg != absolute_section && !in_bss ())) | |
252b5132 | 3400 | { |
9497f5ac | 3401 | resolve_expression (&exp); |
252b5132 | 3402 | if (exp.X_op != O_constant) |
0e389e77 | 3403 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3404 | else |
3405 | { | |
3406 | offsetT i; | |
3407 | ||
005304aa NC |
3408 | /* PR 20901: Check for excessive values. |
3409 | FIXME: 1<<10 is an arbitrary limit. Maybe use maxpagesize instead ? */ | |
3410 | if (exp.X_add_number < 0 || exp.X_add_number > (1 << 10)) | |
5eecd862 | 3411 | as_bad (_("size value for space directive too large: %lx"), |
005304aa NC |
3412 | (long) exp.X_add_number); |
3413 | else | |
3414 | { | |
3415 | if (mult == 0) | |
3416 | mult = 1; | |
3417 | bytes = mult * exp.X_add_number; | |
3418 | ||
3419 | for (i = 0; i < exp.X_add_number; i++) | |
3420 | emit_expr (&val, mult); | |
3421 | } | |
252b5132 RH |
3422 | } |
3423 | } | |
3424 | else | |
3425 | { | |
9497f5ac NC |
3426 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3427 | resolve_expression (&exp); | |
3428 | ||
252b5132 RH |
3429 | if (exp.X_op == O_constant) |
3430 | { | |
a4a151e6 | 3431 | offsetT repeat; |
252b5132 RH |
3432 | |
3433 | repeat = exp.X_add_number; | |
3434 | if (mult) | |
3435 | repeat *= mult; | |
3436 | bytes = repeat; | |
3437 | if (repeat <= 0) | |
3438 | { | |
2d150871 RO |
3439 | if (!flag_mri) |
3440 | as_warn (_(".space repeat count is zero, ignored")); | |
3441 | else if (repeat < 0) | |
252b5132 RH |
3442 | as_warn (_(".space repeat count is negative, ignored")); |
3443 | goto getout; | |
3444 | } | |
3445 | ||
3446 | /* If we are in the absolute section, just bump the offset. */ | |
3447 | if (now_seg == absolute_section) | |
3448 | { | |
ec9ab52c JB |
3449 | if (val.X_op != O_constant || val.X_add_number != 0) |
3450 | as_warn (_("ignoring fill value in absolute section")); | |
252b5132 RH |
3451 | abs_section_offset += repeat; |
3452 | goto getout; | |
3453 | } | |
3454 | ||
3455 | /* If we are secretly in an MRI common section, then | |
3456 | creating space just increases the size of the common | |
3457 | symbol. */ | |
3458 | if (mri_common_symbol != NULL) | |
3459 | { | |
3460 | S_SET_VALUE (mri_common_symbol, | |
3461 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3462 | goto getout; | |
3463 | } | |
3464 | ||
3465 | if (!need_pass_2) | |
3466 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3467 | (offsetT) repeat, (char *) 0); | |
3468 | } | |
3469 | else | |
3470 | { | |
3471 | if (now_seg == absolute_section) | |
3472 | { | |
3473 | as_bad (_("space allocation too complex in absolute section")); | |
3474 | subseg_set (text_section, 0); | |
3475 | } | |
f0e652b4 | 3476 | |
252b5132 RH |
3477 | if (mri_common_symbol != NULL) |
3478 | { | |
3479 | as_bad (_("space allocation too complex in common section")); | |
3480 | mri_common_symbol = NULL; | |
3481 | } | |
f0e652b4 | 3482 | |
252b5132 RH |
3483 | if (!need_pass_2) |
3484 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3485 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3486 | } | |
3487 | ||
ec9ab52c JB |
3488 | if ((val.X_op != O_constant || val.X_add_number != 0) && in_bss ()) |
3489 | as_warn (_("ignoring fill value in section `%s'"), | |
3490 | segment_name (now_seg)); | |
3491 | else if (p) | |
252b5132 RH |
3492 | *p = val.X_add_number; |
3493 | } | |
3494 | ||
3495 | getout: | |
3496 | ||
3497 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3498 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3499 | or dcb.b. */ | |
3500 | if (flag_mri && (bytes & 1) != 0) | |
3501 | mri_pending_align = 1; | |
3502 | ||
3503 | demand_empty_rest_of_line (); | |
3504 | ||
3505 | if (flag_mri) | |
3506 | mri_comment_end (stop, stopc); | |
3507 | } | |
3508 | ||
b1766e7c NC |
3509 | void |
3510 | s_nop (int ignore ATTRIBUTE_UNUSED) | |
3511 | { | |
058430b4 AM |
3512 | expressionS exp; |
3513 | fragS *start; | |
3514 | addressT start_off; | |
3515 | offsetT frag_off; | |
3516 | ||
b1766e7c NC |
3517 | #ifdef md_flush_pending_output |
3518 | md_flush_pending_output (); | |
3519 | #endif | |
3520 | ||
3521 | #ifdef md_cons_align | |
3522 | md_cons_align (1); | |
3523 | #endif | |
3524 | ||
3525 | SKIP_WHITESPACE (); | |
058430b4 | 3526 | expression (&exp); |
b1766e7c NC |
3527 | demand_empty_rest_of_line (); |
3528 | ||
058430b4 AM |
3529 | start = frag_now; |
3530 | start_off = frag_now_fix (); | |
3531 | do | |
3532 | { | |
b1766e7c | 3533 | #ifdef md_emit_single_noop |
058430b4 | 3534 | md_emit_single_noop; |
b1766e7c | 3535 | #else |
058430b4 | 3536 | char *nop; |
b1766e7c NC |
3537 | |
3538 | #ifndef md_single_noop_insn | |
3539 | #define md_single_noop_insn "nop" | |
3540 | #endif | |
058430b4 AM |
3541 | /* md_assemble might modify its argument, so |
3542 | we must pass it a string that is writable. */ | |
3543 | if (asprintf (&nop, "%s", md_single_noop_insn) < 0) | |
3544 | as_fatal ("%s", xstrerror (errno)); | |
b1766e7c | 3545 | |
058430b4 AM |
3546 | /* Some targets assume that they can update input_line_pointer |
3547 | inside md_assemble, and, worse, that they can leave it | |
3548 | assigned to the string pointer that was provided as an | |
3549 | argument. So preserve ilp here. */ | |
3550 | char *saved_ilp = input_line_pointer; | |
3551 | md_assemble (nop); | |
3552 | input_line_pointer = saved_ilp; | |
3553 | free (nop); | |
3554 | #endif | |
3555 | #ifdef md_flush_pending_output | |
3556 | md_flush_pending_output (); | |
b1766e7c | 3557 | #endif |
058430b4 AM |
3558 | } while (exp.X_op == O_constant |
3559 | && exp.X_add_number > 0 | |
3560 | && frag_offset_ignore_align_p (start, frag_now, &frag_off) | |
3561 | && frag_off + frag_now_fix () < start_off + exp.X_add_number); | |
b1766e7c NC |
3562 | } |
3563 | ||
62a02d25 | 3564 | void |
8f065d3b | 3565 | s_nops (int ignore ATTRIBUTE_UNUSED) |
62a02d25 L |
3566 | { |
3567 | expressionS exp; | |
3568 | expressionS val; | |
3569 | ||
3570 | #ifdef md_flush_pending_output | |
3571 | md_flush_pending_output (); | |
3572 | #endif | |
3573 | ||
3574 | #ifdef md_cons_align | |
3575 | md_cons_align (1); | |
3576 | #endif | |
3577 | ||
b1766e7c | 3578 | SKIP_WHITESPACE (); |
62a02d25 | 3579 | expression (&exp); |
b1766e7c NC |
3580 | /* Note - this expression is tested for an absolute value in |
3581 | write.c:relax_segment(). */ | |
62a02d25 | 3582 | |
b1766e7c | 3583 | SKIP_WHITESPACE (); |
62a02d25 L |
3584 | if (*input_line_pointer == ',') |
3585 | { | |
3586 | ++input_line_pointer; | |
3587 | expression (&val); | |
3588 | } | |
3589 | else | |
3590 | { | |
3591 | val.X_op = O_constant; | |
3592 | val.X_add_number = 0; | |
3593 | } | |
3594 | ||
b1766e7c | 3595 | if (val.X_op != O_constant) |
62a02d25 | 3596 | { |
b1766e7c NC |
3597 | as_bad (_("unsupported variable nop control in .nops directive")); |
3598 | val.X_op = O_constant; | |
3599 | val.X_add_number = 0; | |
3600 | } | |
3601 | else if (val.X_add_number < 0) | |
3602 | { | |
3603 | as_warn (_("negative nop control byte, ignored")); | |
3604 | val.X_add_number = 0; | |
62a02d25 | 3605 | } |
62a02d25 L |
3606 | |
3607 | demand_empty_rest_of_line (); | |
b1766e7c NC |
3608 | |
3609 | if (need_pass_2) | |
3610 | /* Ignore this directive if we are going to perform a second pass. */ | |
3611 | return; | |
3612 | ||
3613 | /* Store the no-op instruction control byte in the first byte of frag. */ | |
3614 | char *p; | |
3615 | symbolS *sym = make_expr_symbol (&exp); | |
3616 | p = frag_var (rs_space_nop, 1, 1, (relax_substateT) 0, | |
3617 | sym, (offsetT) 0, (char *) 0); | |
3618 | *p = val.X_add_number; | |
62a02d25 L |
3619 | } |
3620 | ||
252b5132 RH |
3621 | /* This is like s_space, but the value is a floating point number with |
3622 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3623 | friends. */ | |
3624 | ||
3625 | void | |
39e6acbd | 3626 | s_float_space (int float_type) |
252b5132 RH |
3627 | { |
3628 | offsetT count; | |
3629 | int flen; | |
3630 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3631 | char *stop = NULL; | |
fb25138b | 3632 | char stopc = 0; |
252b5132 | 3633 | |
cc3f603a JM |
3634 | #ifdef md_cons_align |
3635 | md_cons_align (1); | |
3636 | #endif | |
3637 | ||
252b5132 RH |
3638 | if (flag_mri) |
3639 | stop = mri_comment_field (&stopc); | |
3640 | ||
3641 | count = get_absolute_expression (); | |
3642 | ||
3643 | SKIP_WHITESPACE (); | |
3644 | if (*input_line_pointer != ',') | |
3645 | { | |
3646 | as_bad (_("missing value")); | |
3647 | ignore_rest_of_line (); | |
3648 | if (flag_mri) | |
3649 | mri_comment_end (stop, stopc); | |
3650 | return; | |
3651 | } | |
3652 | ||
3653 | ++input_line_pointer; | |
3654 | ||
3655 | SKIP_WHITESPACE (); | |
3656 | ||
3657 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3658 | * letter is legal. */ | |
3659 | if (input_line_pointer[0] == '0' | |
3882b010 | 3660 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3661 | input_line_pointer += 2; |
3662 | ||
3663 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3664 | with the exact digits specified. */ | |
3665 | if (input_line_pointer[0] == ':') | |
3666 | { | |
3667 | flen = hex_float (float_type, temp); | |
3668 | if (flen < 0) | |
3669 | { | |
3670 | ignore_rest_of_line (); | |
3671 | if (flag_mri) | |
3672 | mri_comment_end (stop, stopc); | |
3673 | return; | |
3674 | } | |
3675 | } | |
3676 | else | |
3677 | { | |
6d4af3c2 | 3678 | const char *err; |
252b5132 RH |
3679 | |
3680 | err = md_atof (float_type, temp, &flen); | |
3681 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3682 | know (err != NULL || flen > 0); |
252b5132 RH |
3683 | if (err) |
3684 | { | |
0e389e77 | 3685 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3686 | ignore_rest_of_line (); |
3687 | if (flag_mri) | |
3688 | mri_comment_end (stop, stopc); | |
3689 | return; | |
3690 | } | |
3691 | } | |
3692 | ||
3693 | while (--count >= 0) | |
3694 | { | |
3695 | char *p; | |
3696 | ||
3697 | p = frag_more (flen); | |
3698 | memcpy (p, temp, (unsigned int) flen); | |
3699 | } | |
3700 | ||
3701 | demand_empty_rest_of_line (); | |
3702 | ||
3703 | if (flag_mri) | |
3704 | mri_comment_end (stop, stopc); | |
3705 | } | |
3706 | ||
3707 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3708 | ||
3709 | void | |
39e6acbd | 3710 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3711 | { |
3712 | char *stop = NULL; | |
fb25138b | 3713 | char stopc = 0; |
252b5132 RH |
3714 | |
3715 | if (flag_mri) | |
3716 | stop = mri_comment_field (&stopc); | |
3717 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3718 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3719 | /* The ELF backend needs to know that we are changing sections, so | |
3720 | that .previous works correctly. */ | |
f43abd2b | 3721 | if (IS_ELF) |
a2902af6 TS |
3722 | obj_elf_section_change_hook (); |
3723 | #endif | |
252b5132 RH |
3724 | subseg_set (absolute_section, 0); |
3725 | demand_empty_rest_of_line (); | |
3726 | if (flag_mri) | |
3727 | mri_comment_end (stop, stopc); | |
3728 | } | |
3729 | ||
3730 | void | |
39e6acbd | 3731 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3732 | { |
3d540e93 | 3733 | int temp; |
252b5132 RH |
3734 | |
3735 | temp = get_absolute_expression (); | |
3736 | subseg_set (text_section, (subsegT) temp); | |
3737 | demand_empty_rest_of_line (); | |
041ff4dd | 3738 | } |
06e77878 AO |
3739 | |
3740 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3741 | referenced directly, will cause y to become a weak symbol. */ | |
3742 | void | |
3743 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3744 | { | |
3745 | char *name; | |
06e77878 AO |
3746 | symbolS *symbolP; |
3747 | symbolS *symbolP2; | |
3748 | expressionS exp; | |
3749 | ||
7bfd842d NC |
3750 | if ((name = read_symbol_name ()) == NULL) |
3751 | return; | |
06e77878 AO |
3752 | |
3753 | symbolP = symbol_find_or_make (name); | |
3754 | ||
b54788f8 AO |
3755 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3756 | { | |
89cdfe57 | 3757 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3758 | { |
3759 | as_bad (_("symbol `%s' is already defined"), name); | |
7bfd842d | 3760 | goto err_out; |
92757bc9 | 3761 | } |
89cdfe57 | 3762 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3763 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3764 | } |
3765 | ||
06e77878 AO |
3766 | SKIP_WHITESPACE (); |
3767 | ||
3768 | if (*input_line_pointer != ',') | |
3769 | { | |
06e77878 | 3770 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 3771 | goto err_out; |
06e77878 AO |
3772 | } |
3773 | ||
3774 | input_line_pointer++; | |
3775 | ||
3776 | SKIP_WHITESPACE (); | |
7bfd842d | 3777 | free (name); |
06e77878 | 3778 | |
7bfd842d NC |
3779 | if ((name = read_symbol_name ()) == NULL) |
3780 | return; | |
06e77878 AO |
3781 | |
3782 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3783 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3784 | { | |
3785 | symbolP2 = symbol_find_or_make (name); | |
3786 | S_SET_WEAKREFD (symbolP2); | |
3787 | } | |
3788 | else | |
3789 | { | |
3790 | symbolS *symp = symbolP2; | |
3791 | ||
3792 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3793 | { | |
3794 | expressionS *expP = symbol_get_value_expression (symp); | |
3795 | ||
9c2799c2 | 3796 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3797 | && expP->X_add_number == 0); |
3798 | symp = expP->X_add_symbol; | |
3799 | } | |
3800 | if (symp == symbolP) | |
3801 | { | |
3802 | char *loop; | |
3803 | ||
3804 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3805 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3806 | |
3807 | symp = symbolP2; | |
3808 | while (symp != symbolP) | |
3809 | { | |
3810 | char *old_loop = loop; | |
7bfd842d | 3811 | |
06e77878 | 3812 | symp = symbol_get_value_expression (symp)->X_add_symbol; |
1bf57e9f AM |
3813 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3814 | (const char *) NULL); | |
06e77878 AO |
3815 | free (old_loop); |
3816 | } | |
3817 | ||
3818 | as_bad (_("%s: would close weakref loop: %s"), | |
3819 | S_GET_NAME (symbolP), loop); | |
3820 | ||
3821 | free (loop); | |
7bfd842d | 3822 | free (name); |
06e77878 AO |
3823 | ignore_rest_of_line (); |
3824 | return; | |
3825 | } | |
3826 | ||
3827 | /* Short-circuiting instead of just checking here might speed | |
3828 | things up a tiny little bit, but loop error messages would | |
3829 | miss intermediate links. */ | |
3830 | /* symbolP2 = symp; */ | |
3831 | } | |
3832 | ||
06e77878 AO |
3833 | memset (&exp, 0, sizeof (exp)); |
3834 | exp.X_op = O_symbol; | |
3835 | exp.X_add_symbol = symbolP2; | |
3836 | ||
3837 | S_SET_SEGMENT (symbolP, undefined_section); | |
3838 | symbol_set_value_expression (symbolP, &exp); | |
3839 | symbol_set_frag (symbolP, &zero_address_frag); | |
3840 | S_SET_WEAKREFR (symbolP); | |
3841 | ||
3842 | demand_empty_rest_of_line (); | |
7bfd842d NC |
3843 | free (name); |
3844 | return; | |
3845 | ||
3846 | err_out: | |
3847 | ignore_rest_of_line (); | |
3848 | free (name); | |
3849 | return; | |
06e77878 | 3850 | } |
252b5132 | 3851 | \f |
c95b35a9 NS |
3852 | |
3853 | /* Verify that we are at the end of a line. If not, issue an error and | |
3854 | skip to EOL. */ | |
3855 | ||
041ff4dd | 3856 | void |
39e6acbd | 3857 | demand_empty_rest_of_line (void) |
252b5132 RH |
3858 | { |
3859 | SKIP_WHITESPACE (); | |
3860 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3861 | input_line_pointer++; |
252b5132 | 3862 | else |
252b5132 | 3863 | { |
3882b010 | 3864 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3865 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3866 | *input_line_pointer); |
252b5132 | 3867 | else |
c95b35a9 | 3868 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3869 | *input_line_pointer); |
c95b35a9 | 3870 | ignore_rest_of_line (); |
252b5132 | 3871 | } |
fa94de6b | 3872 | |
c95b35a9 NS |
3873 | /* Return pointing just after end-of-line. */ |
3874 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3875 | } | |
3876 | ||
3877 | /* Silently advance to the end of line. Use this after already having | |
3878 | issued an error about something bad. */ | |
3879 | ||
3880 | void | |
3881 | ignore_rest_of_line (void) | |
3882 | { | |
3883 | while (input_line_pointer < buffer_limit | |
3884 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3885 | input_line_pointer++; | |
f0e652b4 | 3886 | |
041ff4dd NC |
3887 | input_line_pointer++; |
3888 | ||
3889 | /* Return pointing just after end-of-line. */ | |
3076e594 NC |
3890 | if (input_line_pointer <= buffer_limit) |
3891 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
252b5132 RH |
3892 | } |
3893 | ||
be95a9c1 AM |
3894 | /* Sets frag for given symbol to zero_address_frag, except when the |
3895 | symbol frag is already set to a dummy listing frag. */ | |
3896 | ||
3897 | static void | |
3898 | set_zero_frag (symbolS *symbolP) | |
3899 | { | |
3900 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3901 | symbol_set_frag (symbolP, &zero_address_frag); | |
3902 | } | |
3903 | ||
041ff4dd | 3904 | /* In: Pointer to a symbol. |
d6415f6c | 3905 | Input_line_pointer->expression. |
f0e652b4 | 3906 | |
041ff4dd | 3907 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3908 | Tried to set symbol to value of expression. |
3909 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3910 | |
252b5132 | 3911 | void |
39e6acbd | 3912 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3913 | { |
3914 | expressionS exp; | |
be95a9c1 | 3915 | segT seg; |
252b5132 | 3916 | |
041ff4dd | 3917 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3918 | |
9497f5ac NC |
3919 | if (!S_IS_FORWARD_REF (symbolP)) |
3920 | (void) expression (&exp); | |
3921 | else | |
3922 | (void) deferred_expression (&exp); | |
252b5132 RH |
3923 | |
3924 | if (exp.X_op == O_illegal) | |
0e389e77 | 3925 | as_bad (_("illegal expression")); |
252b5132 | 3926 | else if (exp.X_op == O_absent) |
0e389e77 | 3927 | as_bad (_("missing expression")); |
252b5132 RH |
3928 | else if (exp.X_op == O_big) |
3929 | { | |
3930 | if (exp.X_add_number > 0) | |
0e389e77 | 3931 | as_bad (_("bignum invalid")); |
252b5132 | 3932 | else |
0e389e77 | 3933 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3934 | } |
3935 | else if (exp.X_op == O_subtract | |
9497f5ac | 3936 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3937 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3938 | && (symbol_get_frag (exp.X_add_symbol) |
3939 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3940 | { |
3941 | exp.X_op = O_constant; | |
3942 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3943 | - S_GET_VALUE (exp.X_op_symbol)); | |
3944 | } | |
3945 | ||
be95a9c1 AM |
3946 | if (symbol_section_p (symbolP)) |
3947 | { | |
3948 | as_bad ("attempt to set value of section symbol"); | |
3949 | return; | |
3950 | } | |
be95a9c1 | 3951 | |
252b5132 RH |
3952 | switch (exp.X_op) |
3953 | { | |
3954 | case O_illegal: | |
3955 | case O_absent: | |
3956 | case O_big: | |
3957 | exp.X_add_number = 0; | |
3958 | /* Fall through. */ | |
3959 | case O_constant: | |
3960 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3961 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3962 | set_zero_frag (symbolP); |
252b5132 RH |
3963 | break; |
3964 | ||
3965 | case O_register: | |
97c4f2d9 | 3966 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3967 | if (S_IS_EXTERNAL (symbolP)) |
3968 | { | |
3969 | as_bad ("can't equate global symbol `%s' with register name", | |
3970 | S_GET_NAME (symbolP)); | |
3971 | return; | |
3972 | } | |
97c4f2d9 | 3973 | #endif |
252b5132 RH |
3974 | S_SET_SEGMENT (symbolP, reg_section); |
3975 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3976 | set_zero_frag (symbolP); |
db557034 | 3977 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3978 | break; |
3979 | ||
3980 | case O_symbol: | |
be95a9c1 AM |
3981 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3982 | /* For x=undef+const, create an expression symbol. | |
3983 | For x=x+const, just update x except when x is an undefined symbol | |
3984 | For x=defined+const, evaluate x. */ | |
3985 | if (symbolP == exp.X_add_symbol | |
3986 | && (seg != undefined_section | |
3987 | || !symbol_constant_p (symbolP))) | |
3988 | { | |
3989 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3990 | break; | |
3991 | } | |
9497f5ac | 3992 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3993 | { |
3994 | symbolS *s = exp.X_add_symbol; | |
3995 | ||
60938e80 | 3996 | if (S_IS_COMMON (s)) |
76db0a2e | 3997 | as_bad (_("`%s' can't be equated to common symbol `%s'"), |
60938e80 L |
3998 | S_GET_NAME (symbolP), S_GET_NAME (s)); |
3999 | ||
be95a9c1 AM |
4000 | S_SET_SEGMENT (symbolP, seg); |
4001 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 4002 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 4003 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 4004 | break; |
252b5132 | 4005 | } |
66bd02d3 AM |
4006 | S_SET_SEGMENT (symbolP, undefined_section); |
4007 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 4008 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
4009 | set_zero_frag (symbolP); |
4010 | break; | |
252b5132 RH |
4011 | |
4012 | default: | |
aba4aa7d AM |
4013 | /* The value is some complex expression. */ |
4014 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 4015 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 4016 | set_zero_frag (symbolP); |
252b5132 RH |
4017 | break; |
4018 | } | |
4019 | } | |
4020 | \f | |
d6415f6c | 4021 | /* cons() |
f0e652b4 | 4022 | |
041ff4dd NC |
4023 | CONStruct more frag of .bytes, or .words etc. |
4024 | Should need_pass_2 be 1 then emit no frag(s). | |
4025 | This understands EXPRESSIONS. | |
f0e652b4 | 4026 | |
041ff4dd | 4027 | Bug (?) |
f0e652b4 | 4028 | |
041ff4dd NC |
4029 | This has a split personality. We use expression() to read the |
4030 | value. We can detect if the value won't fit in a byte or word. | |
4031 | But we can't detect if expression() discarded significant digits | |
4032 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
4033 | |
4034 | /* Select a parser for cons expressions. */ | |
4035 | ||
4036 | /* Some targets need to parse the expression in various fancy ways. | |
4037 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
4038 | (for example, the HPPA does this). Otherwise, you can define | |
252b5132 RH |
4039 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these |
4040 | are defined, which is the normal case, then only simple expressions | |
4041 | are permitted. */ | |
4042 | ||
abd63a32 | 4043 | #ifdef TC_M68K |
252b5132 | 4044 | static void |
39e6acbd | 4045 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 4046 | #endif |
252b5132 RH |
4047 | |
4048 | #ifndef TC_PARSE_CONS_EXPRESSION | |
252b5132 | 4049 | #ifdef REPEAT_CONS_EXPRESSIONS |
62ebcb5c AM |
4050 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
4051 | (parse_repeat_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 | 4052 | static void |
39e6acbd | 4053 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
4054 | #endif |
4055 | ||
4056 | /* If we haven't gotten one yet, just call expression. */ | |
4057 | #ifndef TC_PARSE_CONS_EXPRESSION | |
62ebcb5c AM |
4058 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
4059 | (expression (EXP), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 RH |
4060 | #endif |
4061 | #endif | |
4062 | ||
cdfbf930 | 4063 | void |
b41b1f95 L |
4064 | do_parse_cons_expression (expressionS *exp, |
4065 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 | 4066 | { |
62ebcb5c | 4067 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
cdfbf930 RH |
4068 | } |
4069 | ||
4070 | ||
041ff4dd NC |
4071 | /* Worker to do .byte etc statements. |
4072 | Clobbers input_line_pointer and checks end-of-line. */ | |
4073 | ||
4074 | static void | |
3d540e93 | 4075 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 4076 | int rva) |
252b5132 RH |
4077 | { |
4078 | int c; | |
4079 | expressionS exp; | |
4080 | char *stop = NULL; | |
fb25138b | 4081 | char stopc = 0; |
252b5132 RH |
4082 | |
4083 | #ifdef md_flush_pending_output | |
4084 | md_flush_pending_output (); | |
4085 | #endif | |
4086 | ||
4087 | if (flag_mri) | |
4088 | stop = mri_comment_field (&stopc); | |
4089 | ||
4090 | if (is_it_end_of_statement ()) | |
4091 | { | |
4092 | demand_empty_rest_of_line (); | |
4093 | if (flag_mri) | |
4094 | mri_comment_end (stop, stopc); | |
4095 | return; | |
4096 | } | |
4097 | ||
cc1bc22a AM |
4098 | #ifdef TC_ADDRESS_BYTES |
4099 | if (nbytes == 0) | |
4100 | nbytes = TC_ADDRESS_BYTES (); | |
4101 | #endif | |
4102 | ||
252b5132 RH |
4103 | #ifdef md_cons_align |
4104 | md_cons_align (nbytes); | |
4105 | #endif | |
4106 | ||
4107 | c = 0; | |
4108 | do | |
4109 | { | |
62ebcb5c | 4110 | TC_PARSE_CONS_RETURN_TYPE ret = TC_PARSE_CONS_RETURN_NONE; |
bf7279d5 AM |
4111 | #ifdef TC_CONS_FIX_CHECK |
4112 | fixS **cur_fix = &frchain_now->fix_tail; | |
4113 | ||
4114 | if (*cur_fix != NULL) | |
4115 | cur_fix = &(*cur_fix)->fx_next; | |
4116 | #endif | |
62ebcb5c | 4117 | |
abd63a32 | 4118 | #ifdef TC_M68K |
252b5132 RH |
4119 | if (flag_m68k_mri) |
4120 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
4121 | else | |
abd63a32 | 4122 | #endif |
fa94de6b | 4123 | { |
d02603dc | 4124 | #if 0 |
847d4311 NS |
4125 | if (*input_line_pointer == '"') |
4126 | { | |
4127 | as_bad (_("unexpected `\"' in expression")); | |
4128 | ignore_rest_of_line (); | |
4129 | return; | |
4130 | } | |
d02603dc | 4131 | #endif |
62ebcb5c | 4132 | ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
847d4311 | 4133 | } |
252b5132 RH |
4134 | |
4135 | if (rva) | |
4136 | { | |
4137 | if (exp.X_op == O_symbol) | |
4138 | exp.X_op = O_symbol_rva; | |
4139 | else | |
4140 | as_fatal (_("rva without symbol")); | |
4141 | } | |
62ebcb5c | 4142 | emit_expr_with_reloc (&exp, (unsigned int) nbytes, ret); |
bf7279d5 AM |
4143 | #ifdef TC_CONS_FIX_CHECK |
4144 | TC_CONS_FIX_CHECK (&exp, nbytes, *cur_fix); | |
4145 | #endif | |
252b5132 RH |
4146 | ++c; |
4147 | } | |
4148 | while (*input_line_pointer++ == ','); | |
4149 | ||
4150 | /* In MRI mode, after an odd number of bytes, we must align to an | |
4151 | even word boundary, unless the next instruction is a dc.b, ds.b | |
4152 | or dcb.b. */ | |
4153 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
4154 | mri_pending_align = 1; | |
4155 | ||
041ff4dd | 4156 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
4157 | |
4158 | demand_empty_rest_of_line (); | |
4159 | ||
4160 | if (flag_mri) | |
4161 | mri_comment_end (stop, stopc); | |
4162 | } | |
4163 | ||
252b5132 | 4164 | void |
39e6acbd | 4165 | cons (int size) |
252b5132 RH |
4166 | { |
4167 | cons_worker (size, 0); | |
4168 | } | |
4169 | ||
041ff4dd | 4170 | void |
39e6acbd | 4171 | s_rva (int size) |
252b5132 RH |
4172 | { |
4173 | cons_worker (size, 1); | |
4174 | } | |
4175 | ||
05e9452c AM |
4176 | /* .reloc offset, reloc_name, symbol+addend. */ |
4177 | ||
b38ead21 | 4178 | static void |
05e9452c AM |
4179 | s_reloc (int ignore ATTRIBUTE_UNUSED) |
4180 | { | |
4181 | char *stop = NULL; | |
4182 | char stopc = 0; | |
4183 | expressionS exp; | |
4184 | char *r_name; | |
4185 | int c; | |
4186 | struct reloc_list *reloc; | |
cd0bbe6e TS |
4187 | struct _bfd_rel { const char * name; bfd_reloc_code_real_type code; }; |
4188 | static struct _bfd_rel bfd_relocs[] = | |
4189 | { | |
740bdc67 | 4190 | { "NONE", BFD_RELOC_NONE }, |
cd0bbe6e | 4191 | { "8", BFD_RELOC_8 }, |
740bdc67 AM |
4192 | { "16", BFD_RELOC_16 }, |
4193 | { "32", BFD_RELOC_32 }, | |
4194 | { "64", BFD_RELOC_64 } | |
4195 | }; | |
05e9452c | 4196 | |
8860a416 | 4197 | reloc = XNEW (struct reloc_list); |
05e9452c AM |
4198 | |
4199 | if (flag_mri) | |
4200 | stop = mri_comment_field (&stopc); | |
4201 | ||
4202 | expression (&exp); | |
4203 | switch (exp.X_op) | |
4204 | { | |
4205 | case O_illegal: | |
4206 | case O_absent: | |
4207 | case O_big: | |
4208 | case O_register: | |
4209 | as_bad (_("missing or bad offset expression")); | |
4210 | goto err_out; | |
4211 | case O_constant: | |
4212 | exp.X_add_symbol = section_symbol (now_seg); | |
d1bcae83 L |
4213 | /* Mark the section symbol used in relocation so that it will be |
4214 | included in the symbol table. */ | |
4215 | symbol_mark_used_in_reloc (exp.X_add_symbol); | |
05e9452c | 4216 | exp.X_op = O_symbol; |
2b0f3761 | 4217 | /* Fallthru */ |
05e9452c AM |
4218 | case O_symbol: |
4219 | if (exp.X_add_number == 0) | |
4220 | { | |
4221 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
4222 | break; | |
4223 | } | |
2b0f3761 | 4224 | /* Fallthru */ |
05e9452c AM |
4225 | default: |
4226 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
4227 | break; | |
4228 | } | |
4229 | ||
4230 | SKIP_WHITESPACE (); | |
4231 | if (*input_line_pointer != ',') | |
4232 | { | |
4233 | as_bad (_("missing reloc type")); | |
4234 | goto err_out; | |
4235 | } | |
4236 | ||
4237 | ++input_line_pointer; | |
4238 | SKIP_WHITESPACE (); | |
d02603dc | 4239 | c = get_symbol_name (& r_name); |
740bdc67 AM |
4240 | if (strncasecmp (r_name, "BFD_RELOC_", 10) == 0) |
4241 | { | |
4242 | unsigned int i; | |
4243 | ||
4244 | for (reloc->u.a.howto = NULL, i = 0; i < ARRAY_SIZE (bfd_relocs); i++) | |
4245 | if (strcasecmp (r_name + 10, bfd_relocs[i].name) == 0) | |
4246 | { | |
4247 | reloc->u.a.howto = bfd_reloc_type_lookup (stdoutput, | |
4248 | bfd_relocs[i].code); | |
4249 | break; | |
4250 | } | |
4251 | } | |
4252 | else | |
4253 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
05e9452c AM |
4254 | *input_line_pointer = c; |
4255 | if (reloc->u.a.howto == NULL) | |
4256 | { | |
4257 | as_bad (_("unrecognized reloc type")); | |
4258 | goto err_out; | |
4259 | } | |
4260 | ||
4261 | exp.X_op = O_absent; | |
d02603dc | 4262 | SKIP_WHITESPACE_AFTER_NAME (); |
05e9452c AM |
4263 | if (*input_line_pointer == ',') |
4264 | { | |
4265 | ++input_line_pointer; | |
c188d0bb | 4266 | expression (&exp); |
05e9452c AM |
4267 | } |
4268 | switch (exp.X_op) | |
4269 | { | |
4270 | case O_illegal: | |
4271 | case O_big: | |
4272 | case O_register: | |
4273 | as_bad (_("bad reloc expression")); | |
4274 | err_out: | |
4275 | ignore_rest_of_line (); | |
4276 | free (reloc); | |
4277 | if (flag_mri) | |
4278 | mri_comment_end (stop, stopc); | |
4279 | return; | |
4280 | case O_absent: | |
4281 | reloc->u.a.sym = NULL; | |
4282 | reloc->u.a.addend = 0; | |
4283 | break; | |
4284 | case O_constant: | |
4285 | reloc->u.a.sym = NULL; | |
4286 | reloc->u.a.addend = exp.X_add_number; | |
4287 | break; | |
4288 | case O_symbol: | |
4289 | reloc->u.a.sym = exp.X_add_symbol; | |
4290 | reloc->u.a.addend = exp.X_add_number; | |
4291 | break; | |
4292 | default: | |
4293 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4294 | reloc->u.a.addend = 0; | |
4295 | break; | |
4296 | } | |
4297 | ||
3b4dbbbf | 4298 | reloc->file = as_where (&reloc->line); |
05e9452c AM |
4299 | reloc->next = reloc_list; |
4300 | reloc_list = reloc; | |
4301 | ||
4302 | demand_empty_rest_of_line (); | |
4303 | if (flag_mri) | |
4304 | mri_comment_end (stop, stopc); | |
4305 | } | |
4306 | ||
252b5132 RH |
4307 | /* Put the contents of expression EXP into the object file using |
4308 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4309 | ||
4310 | void | |
39e6acbd | 4311 | emit_expr (expressionS *exp, unsigned int nbytes) |
62ebcb5c AM |
4312 | { |
4313 | emit_expr_with_reloc (exp, nbytes, TC_PARSE_CONS_RETURN_NONE); | |
4314 | } | |
4315 | ||
4316 | void | |
4317 | emit_expr_with_reloc (expressionS *exp, | |
4318 | unsigned int nbytes, | |
4319 | TC_PARSE_CONS_RETURN_TYPE reloc) | |
252b5132 RH |
4320 | { |
4321 | operatorT op; | |
3d540e93 | 4322 | char *p; |
252b5132 RH |
4323 | valueT extra_digit = 0; |
4324 | ||
4325 | /* Don't do anything if we are going to make another pass. */ | |
4326 | if (need_pass_2) | |
4327 | return; | |
4328 | ||
4bc25101 | 4329 | frag_grow (nbytes); |
ed7d5d1a | 4330 | dot_value = frag_now_fix (); |
8e723a10 | 4331 | dot_frag = frag_now; |
ed7d5d1a | 4332 | |
252b5132 RH |
4333 | #ifndef NO_LISTING |
4334 | #ifdef OBJ_ELF | |
4335 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4336 | appear as a four byte positive constant in the .line section, | |
4337 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4338 | { | |
4339 | static int dwarf_line = -1; | |
4340 | ||
4341 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4342 | dwarf_line = -1; | |
4343 | else if (dwarf_line >= 0 | |
4344 | && nbytes == 2 | |
4345 | && exp->X_op == O_constant | |
4346 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4347 | listing_source_line ((unsigned int) dwarf_line); | |
4348 | else if (nbytes == 4 | |
4349 | && exp->X_op == O_constant | |
4350 | && exp->X_add_number >= 0) | |
4351 | dwarf_line = exp->X_add_number; | |
4352 | else | |
4353 | dwarf_line = -1; | |
4354 | } | |
4355 | ||
4356 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4357 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4358 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4359 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4360 | file. We look for that case here. */ | |
4361 | { | |
4362 | static int dwarf_file = 0; | |
4363 | ||
4364 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4365 | dwarf_file = 0; | |
4366 | else if (dwarf_file == 0 | |
4367 | && nbytes == 2 | |
4368 | && exp->X_op == O_constant | |
4369 | && exp->X_add_number == 0x11) | |
4370 | dwarf_file = 1; | |
4371 | else if (dwarf_file == 1 | |
4372 | && nbytes == 2 | |
4373 | && exp->X_op == O_constant | |
4374 | && exp->X_add_number == 0x12) | |
4375 | dwarf_file = 2; | |
4376 | else if (dwarf_file == 2 | |
4377 | && nbytes == 4) | |
4378 | dwarf_file = 3; | |
4379 | else if (dwarf_file == 3 | |
4380 | && nbytes == 2 | |
4381 | && exp->X_op == O_constant | |
4382 | && exp->X_add_number == 0x38) | |
4383 | dwarf_file = 4; | |
4384 | else | |
4385 | dwarf_file = 0; | |
4386 | ||
4387 | /* The variable dwarf_file_string tells stringer that the string | |
4388 | may be the name of the source file. */ | |
4389 | if (dwarf_file == 4) | |
4390 | dwarf_file_string = 1; | |
4391 | else | |
4392 | dwarf_file_string = 0; | |
4393 | } | |
4394 | #endif | |
4395 | #endif | |
4396 | ||
4397 | if (check_eh_frame (exp, &nbytes)) | |
4398 | return; | |
4399 | ||
4400 | op = exp->X_op; | |
4401 | ||
252b5132 RH |
4402 | /* Handle a negative bignum. */ |
4403 | if (op == O_uminus | |
4404 | && exp->X_add_number == 0 | |
2b47531b ILT |
4405 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4406 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4407 | { |
4408 | int i; | |
4409 | unsigned long carry; | |
4410 | ||
2b47531b | 4411 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4412 | |
4413 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4414 | carry = 1; | |
4415 | for (i = 0; i < exp->X_add_number; i++) | |
4416 | { | |
4417 | unsigned long next; | |
4418 | ||
041ff4dd | 4419 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4420 | & LITTLENUM_MASK) |
4421 | + carry); | |
4422 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4423 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4424 | } | |
4425 | ||
4426 | /* We can ignore any carry out, because it will be handled by | |
4427 | extra_digit if it is needed. */ | |
4428 | ||
4429 | extra_digit = (valueT) -1; | |
4430 | op = O_big; | |
4431 | } | |
4432 | ||
4433 | if (op == O_absent || op == O_illegal) | |
4434 | { | |
4435 | as_warn (_("zero assumed for missing expression")); | |
4436 | exp->X_add_number = 0; | |
4437 | op = O_constant; | |
4438 | } | |
4439 | else if (op == O_big && exp->X_add_number <= 0) | |
4440 | { | |
0e389e77 | 4441 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4442 | exp->X_add_number = 0; |
4443 | op = O_constant; | |
4444 | } | |
4445 | else if (op == O_register) | |
4446 | { | |
4447 | as_warn (_("register value used as expression")); | |
4448 | op = O_constant; | |
4449 | } | |
4450 | ||
ec9ab52c JB |
4451 | /* Allow `.word 0' in the absolute section. */ |
4452 | if (now_seg == absolute_section) | |
4453 | { | |
4454 | if (op != O_constant || exp->X_add_number != 0) | |
4455 | as_bad (_("attempt to store value in absolute section")); | |
4456 | abs_section_offset += nbytes; | |
4457 | return; | |
4458 | } | |
4459 | ||
4460 | /* Allow `.word 0' in BSS style sections. */ | |
4461 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
4462 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
4463 | segment_name (now_seg)); | |
4464 | ||
252b5132 RH |
4465 | p = frag_more ((int) nbytes); |
4466 | ||
62ebcb5c AM |
4467 | if (reloc != TC_PARSE_CONS_RETURN_NONE) |
4468 | { | |
4469 | emit_expr_fix (exp, nbytes, frag_now, p, reloc); | |
4470 | return; | |
4471 | } | |
4472 | ||
252b5132 RH |
4473 | #ifndef WORKING_DOT_WORD |
4474 | /* If we have the difference of two symbols in a word, save it on | |
4475 | the broken_words list. See the code in write.c. */ | |
4476 | if (op == O_subtract && nbytes == 2) | |
4477 | { | |
4478 | struct broken_word *x; | |
4479 | ||
8860a416 | 4480 | x = XNEW (struct broken_word); |
252b5132 RH |
4481 | x->next_broken_word = broken_words; |
4482 | broken_words = x; | |
4483 | x->seg = now_seg; | |
4484 | x->subseg = now_subseg; | |
4485 | x->frag = frag_now; | |
4486 | x->word_goes_here = p; | |
4487 | x->dispfrag = 0; | |
4488 | x->add = exp->X_add_symbol; | |
4489 | x->sub = exp->X_op_symbol; | |
4490 | x->addnum = exp->X_add_number; | |
4491 | x->added = 0; | |
dc59a897 | 4492 | x->use_jump = 0; |
252b5132 RH |
4493 | new_broken_words++; |
4494 | return; | |
4495 | } | |
4496 | #endif | |
4497 | ||
4498 | /* If we have an integer, but the number of bytes is too large to | |
4499 | pass to md_number_to_chars, handle it as a bignum. */ | |
4500 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4501 | { | |
e5604d79 | 4502 | extra_digit = exp->X_unsigned ? 0 : -1; |
956a6ba3 | 4503 | convert_to_bignum (exp, !exp->X_unsigned); |
e5604d79 | 4504 | op = O_big; |
252b5132 RH |
4505 | } |
4506 | ||
4507 | if (op == O_constant) | |
4508 | { | |
3d540e93 NC |
4509 | valueT get; |
4510 | valueT use; | |
4511 | valueT mask; | |
252b5132 | 4512 | valueT hibit; |
3d540e93 | 4513 | valueT unmask; |
252b5132 RH |
4514 | |
4515 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4516 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4517 | if (nbytes >= sizeof (valueT)) |
4518 | { | |
4519 | mask = 0; | |
4520 | if (nbytes > sizeof (valueT)) | |
4521 | hibit = 0; | |
4522 | else | |
4523 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4524 | } | |
4525 | else | |
4526 | { | |
041ff4dd | 4527 | /* Don't store these bits. */ |
252b5132 RH |
4528 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4529 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4530 | } | |
4531 | ||
041ff4dd | 4532 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4533 | |
4534 | #ifdef NEVER | |
4535 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4536 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4537 | #endif |
4538 | ||
4539 | get = exp->X_add_number; | |
4540 | use = get & unmask; | |
4541 | if ((get & mask) != 0 | |
4542 | && ((get & mask) != mask | |
4543 | || (get & hibit) == 0)) | |
5f2b6bc9 NC |
4544 | { |
4545 | /* Leading bits contain both 0s & 1s. */ | |
b6ac5419 | 4546 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4547 | #ifndef __MSVCRT__ |
5c612369 NC |
4548 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4549 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4550 | #else |
4551 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4552 | (unsigned long long) get, (unsigned long long) use); | |
4553 | #endif | |
b6ac5419 AM |
4554 | #else |
4555 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4556 | (unsigned long) get, (unsigned long) use); | |
4557 | #endif | |
252b5132 | 4558 | } |
041ff4dd | 4559 | /* Put bytes in right order. */ |
252b5132 RH |
4560 | md_number_to_chars (p, use, (int) nbytes); |
4561 | } | |
4562 | else if (op == O_big) | |
4563 | { | |
4564 | unsigned int size; | |
4565 | LITTLENUM_TYPE *nums; | |
4566 | ||
252b5132 RH |
4567 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4568 | if (nbytes < size) | |
4569 | { | |
93d90f46 | 4570 | int i = nbytes / CHARS_PER_LITTLENUM; |
5f2b6bc9 | 4571 | |
93d90f46 AM |
4572 | if (i != 0) |
4573 | { | |
4574 | LITTLENUM_TYPE sign = 0; | |
4575 | if ((generic_bignum[--i] | |
4576 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4577 | sign = ~(LITTLENUM_TYPE) 0; | |
5f2b6bc9 | 4578 | |
93d90f46 AM |
4579 | while (++i < exp->X_add_number) |
4580 | if (generic_bignum[i] != sign) | |
4581 | break; | |
4582 | } | |
5f2b6bc9 NC |
4583 | else if (nbytes == 1) |
4584 | { | |
4585 | /* We have nbytes == 1 and CHARS_PER_LITTLENUM == 2 (probably). | |
4586 | Check that bits 8.. of generic_bignum[0] match bit 7 | |
4587 | and that they match all of generic_bignum[1..exp->X_add_number]. */ | |
4588 | LITTLENUM_TYPE sign = (generic_bignum[0] & (1 << 7)) ? -1 : 0; | |
4589 | LITTLENUM_TYPE himask = LITTLENUM_MASK & ~ 0xFF; | |
4590 | ||
4591 | if ((generic_bignum[0] & himask) == (sign & himask)) | |
4592 | { | |
4593 | while (++i < exp->X_add_number) | |
4594 | if (generic_bignum[i] != sign) | |
4595 | break; | |
4596 | } | |
4597 | } | |
4598 | ||
93d90f46 | 4599 | if (i < exp->X_add_number) |
992a06ee AM |
4600 | as_warn (ngettext ("bignum truncated to %d byte", |
4601 | "bignum truncated to %d bytes", | |
4602 | nbytes), | |
4603 | nbytes); | |
252b5132 RH |
4604 | size = nbytes; |
4605 | } | |
4606 | ||
93d90f46 AM |
4607 | if (nbytes == 1) |
4608 | { | |
4609 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4610 | return; | |
4611 | } | |
4612 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4613 | ||
252b5132 RH |
4614 | if (target_big_endian) |
4615 | { | |
4616 | while (nbytes > size) | |
4617 | { | |
4618 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4619 | nbytes -= CHARS_PER_LITTLENUM; | |
4620 | p += CHARS_PER_LITTLENUM; | |
4621 | } | |
4622 | ||
4623 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4624 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4625 | { |
4626 | --nums; | |
4627 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4628 | size -= CHARS_PER_LITTLENUM; | |
4629 | p += CHARS_PER_LITTLENUM; | |
4630 | } | |
4631 | } | |
4632 | else | |
4633 | { | |
4634 | nums = generic_bignum; | |
ceac3f62 | 4635 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4636 | { |
4637 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4638 | ++nums; | |
4639 | size -= CHARS_PER_LITTLENUM; | |
4640 | p += CHARS_PER_LITTLENUM; | |
4641 | nbytes -= CHARS_PER_LITTLENUM; | |
4642 | } | |
4643 | ||
ceac3f62 | 4644 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4645 | { |
4646 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4647 | nbytes -= CHARS_PER_LITTLENUM; | |
4648 | p += CHARS_PER_LITTLENUM; | |
4649 | } | |
4650 | } | |
4651 | } | |
4652 | else | |
62ebcb5c | 4653 | emit_expr_fix (exp, nbytes, frag_now, p, TC_PARSE_CONS_RETURN_NONE); |
7ddd14de BW |
4654 | } |
4655 | ||
4656 | void | |
62ebcb5c | 4657 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p, |
00c06fdc | 4658 | TC_PARSE_CONS_RETURN_TYPE r ATTRIBUTE_UNUSED) |
7ddd14de | 4659 | { |
62ebcb5c AM |
4660 | int offset = 0; |
4661 | unsigned int size = nbytes; | |
4662 | ||
4663 | memset (p, 0, size); | |
252b5132 | 4664 | |
7ddd14de | 4665 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4666 | |
252b5132 | 4667 | #ifdef TC_CONS_FIX_NEW |
62ebcb5c | 4668 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal + offset, size, exp, r); |
252b5132 | 4669 | #else |
62ebcb5c AM |
4670 | if (r != TC_PARSE_CONS_RETURN_NONE) |
4671 | { | |
4672 | reloc_howto_type *reloc_howto; | |
252b5132 | 4673 | |
62ebcb5c AM |
4674 | reloc_howto = bfd_reloc_type_lookup (stdoutput, r); |
4675 | size = bfd_get_reloc_size (reloc_howto); | |
4676 | ||
4677 | if (size > nbytes) | |
4678 | { | |
992a06ee AM |
4679 | as_bad (ngettext ("%s relocations do not fit in %u byte", |
4680 | "%s relocations do not fit in %u bytes", | |
4681 | nbytes), | |
62ebcb5c AM |
4682 | reloc_howto->name, nbytes); |
4683 | return; | |
4684 | } | |
4685 | else if (target_big_endian) | |
4686 | offset = nbytes - size; | |
4687 | } | |
4688 | else | |
4689 | switch (size) | |
7ddd14de BW |
4690 | { |
4691 | case 1: | |
4692 | r = BFD_RELOC_8; | |
4693 | break; | |
4694 | case 2: | |
4695 | r = BFD_RELOC_16; | |
4696 | break; | |
d4f4f3fb AM |
4697 | case 3: |
4698 | r = BFD_RELOC_24; | |
4699 | break; | |
7ddd14de BW |
4700 | case 4: |
4701 | r = BFD_RELOC_32; | |
4702 | break; | |
4703 | case 8: | |
4704 | r = BFD_RELOC_64; | |
4705 | break; | |
4706 | default: | |
62ebcb5c AM |
4707 | as_bad (_("unsupported BFD relocation size %u"), size); |
4708 | return; | |
252b5132 | 4709 | } |
62ebcb5c AM |
4710 | fix_new_exp (frag, p - frag->fr_literal + offset, size, |
4711 | exp, 0, r); | |
252b5132 | 4712 | #endif |
252b5132 RH |
4713 | } |
4714 | \f | |
252b5132 RH |
4715 | /* Handle an MRI style string expression. */ |
4716 | ||
abd63a32 | 4717 | #ifdef TC_M68K |
252b5132 | 4718 | static void |
62ebcb5c | 4719 | parse_mri_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4720 | { |
4721 | if (*input_line_pointer != '\'' | |
4722 | && (input_line_pointer[1] != '\'' | |
4723 | || (*input_line_pointer != 'A' | |
4724 | && *input_line_pointer != 'E'))) | |
1e539319 | 4725 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
252b5132 RH |
4726 | else |
4727 | { | |
4728 | unsigned int scan; | |
4729 | unsigned int result = 0; | |
4730 | ||
4731 | /* An MRI style string. Cut into as many bytes as will fit into | |
4732 | a nbyte chunk, left justify if necessary, and separate with | |
4733 | commas so we can try again later. */ | |
4734 | if (*input_line_pointer == 'A') | |
4735 | ++input_line_pointer; | |
4736 | else if (*input_line_pointer == 'E') | |
4737 | { | |
4738 | as_bad (_("EBCDIC constants are not supported")); | |
4739 | ++input_line_pointer; | |
4740 | } | |
4741 | ||
4742 | input_line_pointer++; | |
4743 | for (scan = 0; scan < nbytes; scan++) | |
4744 | { | |
4745 | if (*input_line_pointer == '\'') | |
4746 | { | |
4747 | if (input_line_pointer[1] == '\'') | |
4748 | { | |
4749 | input_line_pointer++; | |
4750 | } | |
4751 | else | |
4752 | break; | |
4753 | } | |
4754 | result = (result << 8) | (*input_line_pointer++); | |
4755 | } | |
4756 | ||
041ff4dd | 4757 | /* Left justify. */ |
252b5132 RH |
4758 | while (scan < nbytes) |
4759 | { | |
4760 | result <<= 8; | |
4761 | scan++; | |
4762 | } | |
f0e652b4 | 4763 | |
041ff4dd | 4764 | /* Create correct expression. */ |
252b5132 RH |
4765 | exp->X_op = O_constant; |
4766 | exp->X_add_number = result; | |
f0e652b4 | 4767 | |
041ff4dd | 4768 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4769 | if (input_line_pointer[0] != '\'' || |
4770 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4771 | { | |
4772 | input_line_pointer -= 2; | |
4773 | input_line_pointer[0] = ','; | |
4774 | input_line_pointer[1] = '\''; | |
4775 | } | |
4776 | else | |
4777 | input_line_pointer++; | |
4778 | } | |
4779 | } | |
abd63a32 | 4780 | #endif /* TC_M68K */ |
252b5132 RH |
4781 | \f |
4782 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4783 | ||
4784 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4785 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4786 | object file COUNT times. | |
4787 | ||
4788 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4789 | ||
4790 | static void | |
e046cf80 | 4791 | parse_repeat_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4792 | { |
4793 | expressionS count; | |
3d540e93 | 4794 | int i; |
252b5132 RH |
4795 | |
4796 | expression (exp); | |
4797 | ||
4798 | if (*input_line_pointer != ':') | |
4799 | { | |
4800 | /* No repeat count. */ | |
4801 | return; | |
4802 | } | |
4803 | ||
4804 | ++input_line_pointer; | |
4805 | expression (&count); | |
4806 | if (count.X_op != O_constant | |
4807 | || count.X_add_number <= 0) | |
4808 | { | |
0e389e77 | 4809 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4810 | return; |
4811 | } | |
4812 | ||
4813 | /* The cons function is going to output this expression once. So we | |
4814 | output it count - 1 times. */ | |
4815 | for (i = count.X_add_number - 1; i > 0; i--) | |
4816 | emit_expr (exp, nbytes); | |
4817 | } | |
4818 | ||
4819 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4820 | \f | |
4821 | /* Parse a floating point number represented as a hex constant. This | |
4822 | permits users to specify the exact bits they want in the floating | |
4823 | point number. */ | |
4824 | ||
4825 | static int | |
39e6acbd | 4826 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4827 | { |
4828 | int length; | |
4829 | int i; | |
4830 | ||
4831 | switch (float_type) | |
4832 | { | |
4833 | case 'f': | |
4834 | case 'F': | |
4835 | case 's': | |
4836 | case 'S': | |
4837 | length = 4; | |
4838 | break; | |
4839 | ||
4840 | case 'd': | |
4841 | case 'D': | |
4842 | case 'r': | |
4843 | case 'R': | |
4844 | length = 8; | |
4845 | break; | |
4846 | ||
4847 | case 'x': | |
4848 | case 'X': | |
4849 | length = 12; | |
4850 | break; | |
4851 | ||
4852 | case 'p': | |
4853 | case 'P': | |
4854 | length = 12; | |
4855 | break; | |
4856 | ||
4857 | default: | |
0e389e77 | 4858 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4859 | return -1; |
4860 | } | |
4861 | ||
4862 | /* It would be nice if we could go through expression to parse the | |
4863 | hex constant, but if we get a bignum it's a pain to sort it into | |
4864 | the buffer correctly. */ | |
4865 | i = 0; | |
4866 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4867 | { | |
4868 | int d; | |
4869 | ||
4870 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4871 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4872 | if (*input_line_pointer == '_') |
4873 | { | |
4874 | ++input_line_pointer; | |
4875 | continue; | |
4876 | } | |
4877 | ||
4878 | if (i >= length) | |
4879 | { | |
0e389e77 | 4880 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4881 | return -1; |
4882 | } | |
4883 | d = hex_value (*input_line_pointer) << 4; | |
4884 | ++input_line_pointer; | |
4885 | while (*input_line_pointer == '_') | |
4886 | ++input_line_pointer; | |
4887 | if (hex_p (*input_line_pointer)) | |
4888 | { | |
4889 | d += hex_value (*input_line_pointer); | |
4890 | ++input_line_pointer; | |
4891 | } | |
4892 | if (target_big_endian) | |
4893 | bytes[i] = d; | |
4894 | else | |
4895 | bytes[length - i - 1] = d; | |
4896 | ++i; | |
4897 | } | |
4898 | ||
4899 | if (i < length) | |
4900 | { | |
4901 | if (target_big_endian) | |
4902 | memset (bytes + i, 0, length - i); | |
4903 | else | |
4904 | memset (bytes, 0, length - i); | |
4905 | } | |
4906 | ||
4907 | return length; | |
4908 | } | |
4909 | ||
d6415f6c | 4910 | /* float_cons() |
f0e652b4 | 4911 | |
041ff4dd NC |
4912 | CONStruct some more frag chars of .floats .ffloats etc. |
4913 | Makes 0 or more new frags. | |
4914 | If need_pass_2 == 1, no frags are emitted. | |
4915 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4916 | |
041ff4dd NC |
4917 | A floating constant is defined by atof_generic(), except it is preceded |
4918 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4919 | reading, I decided to be incompatible. This always tries to give you | |
4920 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4921 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4922 | a choice of 2 flavours of noise according to which of 2 floating-point |
4923 | scanners you directed AS to use. | |
f0e652b4 | 4924 | |
041ff4dd | 4925 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4926 | |
4927 | void | |
39e6acbd | 4928 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4929 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4930 | { |
3d540e93 | 4931 | char *p; |
041ff4dd | 4932 | int length; /* Number of chars in an object. */ |
6d4af3c2 | 4933 | const char *err; /* Error from scanning floating literal. */ |
252b5132 RH |
4934 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4935 | ||
4936 | if (is_it_end_of_statement ()) | |
4937 | { | |
4938 | demand_empty_rest_of_line (); | |
4939 | return; | |
4940 | } | |
4941 | ||
ec9ab52c JB |
4942 | if (now_seg == absolute_section) |
4943 | { | |
4944 | as_bad (_("attempt to store float in absolute section")); | |
4945 | ignore_rest_of_line (); | |
4946 | return; | |
4947 | } | |
4948 | ||
4949 | if (in_bss ()) | |
4950 | { | |
4951 | as_bad (_("attempt to store float in section `%s'"), | |
4952 | segment_name (now_seg)); | |
4953 | ignore_rest_of_line (); | |
4954 | return; | |
4955 | } | |
4956 | ||
252b5132 RH |
4957 | #ifdef md_flush_pending_output |
4958 | md_flush_pending_output (); | |
4959 | #endif | |
4960 | ||
cc3f603a JM |
4961 | #ifdef md_cons_align |
4962 | md_cons_align (1); | |
4963 | #endif | |
4964 | ||
252b5132 RH |
4965 | do |
4966 | { | |
041ff4dd | 4967 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4968 | SKIP_WHITESPACE (); |
4969 | ||
4970 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4971 | letter is legal. Someone may invent a "z" format and this routine |
4972 | has no use for such information. Lusers beware: you get | |
4973 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4974 | if (input_line_pointer[0] == '0' |
3882b010 | 4975 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4976 | input_line_pointer += 2; |
4977 | ||
4978 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4979 | point with the exact digits specified. */ |
252b5132 RH |
4980 | if (input_line_pointer[0] == ':') |
4981 | { | |
4982 | ++input_line_pointer; | |
4983 | length = hex_float (float_type, temp); | |
4984 | if (length < 0) | |
4985 | { | |
4986 | ignore_rest_of_line (); | |
4987 | return; | |
4988 | } | |
4989 | } | |
4990 | else | |
4991 | { | |
4992 | err = md_atof (float_type, temp, &length); | |
4993 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4994 | know (err != NULL || length > 0); |
252b5132 RH |
4995 | if (err) |
4996 | { | |
0e389e77 | 4997 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4998 | ignore_rest_of_line (); |
4999 | return; | |
5000 | } | |
5001 | } | |
5002 | ||
5003 | if (!need_pass_2) | |
5004 | { | |
5005 | int count; | |
5006 | ||
5007 | count = 1; | |
5008 | ||
5009 | #ifdef REPEAT_CONS_EXPRESSIONS | |
5010 | if (*input_line_pointer == ':') | |
5011 | { | |
5012 | expressionS count_exp; | |
5013 | ||
5014 | ++input_line_pointer; | |
5015 | expression (&count_exp); | |
f0e652b4 | 5016 | |
252b5132 RH |
5017 | if (count_exp.X_op != O_constant |
5018 | || count_exp.X_add_number <= 0) | |
041ff4dd | 5019 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
5020 | else |
5021 | count = count_exp.X_add_number; | |
5022 | } | |
5023 | #endif | |
5024 | ||
5025 | while (--count >= 0) | |
5026 | { | |
5027 | p = frag_more (length); | |
5028 | memcpy (p, temp, (unsigned int) length); | |
5029 | } | |
5030 | } | |
5031 | SKIP_WHITESPACE (); | |
5032 | } | |
5033 | while (*input_line_pointer++ == ','); | |
5034 | ||
041ff4dd NC |
5035 | /* Put terminator back into stream. */ |
5036 | --input_line_pointer; | |
252b5132 | 5037 | demand_empty_rest_of_line (); |
041ff4dd | 5038 | } |
252b5132 | 5039 | \f |
9136aa49 | 5040 | /* LEB128 Encoding. |
252b5132 | 5041 | |
9136aa49 DG |
5042 | Note - we are using the DWARF standard's definition of LEB128 encoding |
5043 | where each 7-bit value is a stored in a byte, *not* an octet. This | |
5044 | means that on targets where a byte contains multiple octets there is | |
5045 | a *huge waste of space*. (This also means that we do not have to | |
5046 | have special versions of these functions for when OCTETS_PER_BYTE_POWER | |
5047 | is non-zero). | |
5048 | ||
5049 | If the 7-bit values were to be packed into N-bit bytes (where N > 8) | |
5050 | we would then have to consider whether multiple, successive LEB128 | |
5051 | values should be packed into the bytes without padding (bad idea) or | |
5052 | whether each LEB128 number is padded out to a whole number of bytes. | |
5053 | Plus you have to decide on the endianness of packing octets into a | |
5054 | byte. */ | |
5055 | ||
5056 | /* Return the size of a LEB128 value in bytes. */ | |
5057 | ||
5058 | static inline unsigned int | |
39e6acbd | 5059 | sizeof_sleb128 (offsetT value) |
252b5132 | 5060 | { |
3d540e93 NC |
5061 | int size = 0; |
5062 | unsigned byte; | |
252b5132 RH |
5063 | |
5064 | do | |
5065 | { | |
5066 | byte = (value & 0x7f); | |
5067 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5068 | Fortunately, we can structure things so that the extra work reduces | |
5069 | to a noop on systems that do things "properly". */ | |
5070 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5071 | size += 1; | |
5072 | } | |
5073 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
5074 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5075 | ||
5076 | return size; | |
5077 | } | |
5078 | ||
9136aa49 | 5079 | static inline unsigned int |
39e6acbd | 5080 | sizeof_uleb128 (valueT value) |
252b5132 | 5081 | { |
3d540e93 | 5082 | int size = 0; |
252b5132 RH |
5083 | |
5084 | do | |
5085 | { | |
252b5132 RH |
5086 | value >>= 7; |
5087 | size += 1; | |
5088 | } | |
5089 | while (value != 0); | |
5090 | ||
5091 | return size; | |
5092 | } | |
5093 | ||
9136aa49 | 5094 | unsigned int |
39e6acbd | 5095 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
5096 | { |
5097 | if (sign) | |
5098 | return sizeof_sleb128 ((offsetT) value); | |
5099 | else | |
5100 | return sizeof_uleb128 (value); | |
5101 | } | |
5102 | ||
9136aa49 | 5103 | /* Output a LEB128 value. Returns the number of bytes used. */ |
252b5132 | 5104 | |
9136aa49 | 5105 | static inline unsigned int |
39e6acbd | 5106 | output_sleb128 (char *p, offsetT value) |
252b5132 | 5107 | { |
3d540e93 NC |
5108 | char *orig = p; |
5109 | int more; | |
252b5132 RH |
5110 | |
5111 | do | |
5112 | { | |
5113 | unsigned byte = (value & 0x7f); | |
5114 | ||
5115 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5116 | Fortunately, we can structure things so that the extra work reduces | |
5117 | to a noop on systems that do things "properly". */ | |
5118 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5119 | ||
5120 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
5121 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5122 | if (more) | |
5123 | byte |= 0x80; | |
5124 | ||
5125 | *p++ = byte; | |
5126 | } | |
5127 | while (more); | |
5128 | ||
5129 | return p - orig; | |
5130 | } | |
5131 | ||
9136aa49 | 5132 | static inline unsigned int |
39e6acbd | 5133 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
5134 | { |
5135 | char *orig = p; | |
5136 | ||
5137 | do | |
5138 | { | |
5139 | unsigned byte = (value & 0x7f); | |
9136aa49 | 5140 | |
252b5132 RH |
5141 | value >>= 7; |
5142 | if (value != 0) | |
5143 | /* More bytes to follow. */ | |
5144 | byte |= 0x80; | |
5145 | ||
5146 | *p++ = byte; | |
5147 | } | |
5148 | while (value != 0); | |
5149 | ||
5150 | return p - orig; | |
5151 | } | |
5152 | ||
9136aa49 | 5153 | unsigned int |
39e6acbd | 5154 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
5155 | { |
5156 | if (sign) | |
5157 | return output_sleb128 (p, (offsetT) value); | |
5158 | else | |
5159 | return output_uleb128 (p, value); | |
5160 | } | |
5161 | ||
5162 | /* Do the same for bignums. We combine sizeof with output here in that | |
5163 | we don't output for NULL values of P. It isn't really as critical as | |
9136aa49 DG |
5164 | for "normal" values that this be streamlined. Returns the number of |
5165 | bytes used. */ | |
252b5132 | 5166 | |
9136aa49 DG |
5167 | static inline unsigned int |
5168 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5169 | { |
5170 | char *orig = p; | |
5171 | valueT val = 0; | |
5172 | int loaded = 0; | |
5173 | unsigned byte; | |
5174 | ||
5175 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
5176 | while (size > 1 |
5177 | && bignum[size - 1] == LITTLENUM_MASK | |
5178 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
5179 | size--; |
5180 | ||
5181 | do | |
5182 | { | |
e5604d79 RS |
5183 | /* OR in the next part of the littlenum. */ |
5184 | val |= (*bignum << loaded); | |
5185 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
5186 | size--; | |
5187 | bignum++; | |
5188 | ||
5189 | /* Add bytes until there are less than 7 bits left in VAL | |
5190 | or until every non-sign bit has been written. */ | |
5191 | do | |
252b5132 | 5192 | { |
e5604d79 RS |
5193 | byte = val & 0x7f; |
5194 | loaded -= 7; | |
5195 | val >>= 7; | |
5196 | if (size > 0 | |
5197 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 5198 | byte |= 0x80; |
e5604d79 RS |
5199 | |
5200 | if (orig) | |
5201 | *p = byte; | |
5202 | p++; | |
252b5132 | 5203 | } |
e5604d79 RS |
5204 | while ((byte & 0x80) != 0 && loaded >= 7); |
5205 | } | |
5206 | while (size > 0); | |
252b5132 | 5207 | |
e5604d79 RS |
5208 | /* Mop up any left-over bits (of which there will be less than 7). */ |
5209 | if ((byte & 0x80) != 0) | |
5210 | { | |
5211 | /* Sign-extend VAL. */ | |
5212 | if (val & (1 << (loaded - 1))) | |
29798047 | 5213 | val |= ~0U << loaded; |
252b5132 | 5214 | if (orig) |
e5604d79 | 5215 | *p = val & 0x7f; |
252b5132 RH |
5216 | p++; |
5217 | } | |
252b5132 RH |
5218 | |
5219 | return p - orig; | |
5220 | } | |
5221 | ||
9136aa49 DG |
5222 | static inline unsigned int |
5223 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5224 | { |
5225 | char *orig = p; | |
5226 | valueT val = 0; | |
5227 | int loaded = 0; | |
5228 | unsigned byte; | |
5229 | ||
5230 | /* Strip leading zeros off the bignum. */ | |
5231 | /* XXX: Is this needed? */ | |
041ff4dd | 5232 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
5233 | size--; |
5234 | ||
5235 | do | |
5236 | { | |
5237 | if (loaded < 7 && size > 0) | |
5238 | { | |
5239 | val |= (*bignum << loaded); | |
5240 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5241 | size--; | |
5242 | bignum++; | |
5243 | } | |
5244 | ||
5245 | byte = val & 0x7f; | |
5246 | loaded -= 7; | |
5247 | val >>= 7; | |
5248 | ||
5249 | if (size > 0 || val) | |
5250 | byte |= 0x80; | |
5251 | ||
5252 | if (orig) | |
5253 | *p = byte; | |
5254 | p++; | |
5255 | } | |
5256 | while (byte & 0x80); | |
5257 | ||
5258 | return p - orig; | |
5259 | } | |
5260 | ||
9136aa49 DG |
5261 | static unsigned int |
5262 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size, int sign) | |
252b5132 RH |
5263 | { |
5264 | if (sign) | |
5265 | return output_big_sleb128 (p, bignum, size); | |
5266 | else | |
5267 | return output_big_uleb128 (p, bignum, size); | |
5268 | } | |
5269 | ||
5270 | /* Generate the appropriate fragments for a given expression to emit a | |
9a724e7b | 5271 | leb128 value. SIGN is 1 for sleb, 0 for uleb. */ |
252b5132 | 5272 | |
6b9a135d | 5273 | void |
39e6acbd | 5274 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5275 | { |
5276 | operatorT op = exp->X_op; | |
b7712f8d | 5277 | unsigned int nbytes; |
252b5132 RH |
5278 | |
5279 | if (op == O_absent || op == O_illegal) | |
5280 | { | |
5281 | as_warn (_("zero assumed for missing expression")); | |
5282 | exp->X_add_number = 0; | |
5283 | op = O_constant; | |
5284 | } | |
5285 | else if (op == O_big && exp->X_add_number <= 0) | |
5286 | { | |
0e389e77 | 5287 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5288 | exp->X_add_number = 0; |
5289 | op = O_constant; | |
5290 | } | |
5291 | else if (op == O_register) | |
5292 | { | |
5293 | as_warn (_("register value used as expression")); | |
5294 | op = O_constant; | |
5295 | } | |
e5604d79 RS |
5296 | else if (op == O_constant |
5297 | && sign | |
956a6ba3 | 5298 | && (exp->X_add_number < 0) == !exp->X_extrabit) |
e5604d79 RS |
5299 | { |
5300 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5301 | doesn't reflect the sign of the original value. Convert EXP | |
5302 | to a correctly-extended bignum instead. */ | |
956a6ba3 | 5303 | convert_to_bignum (exp, exp->X_extrabit); |
e5604d79 RS |
5304 | op = O_big; |
5305 | } | |
252b5132 | 5306 | |
ec9ab52c JB |
5307 | if (now_seg == absolute_section) |
5308 | { | |
5309 | if (op != O_constant || exp->X_add_number != 0) | |
5310 | as_bad (_("attempt to store value in absolute section")); | |
5311 | abs_section_offset++; | |
5312 | return; | |
5313 | } | |
5314 | ||
5315 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
5316 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
5317 | segment_name (now_seg)); | |
5318 | ||
67a659f6 RH |
5319 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5320 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5321 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5322 | if (check_eh_frame (exp, &nbytes)) |
5323 | abort (); | |
5324 | ||
371b7465 RH |
5325 | /* Let the backend know that subsequent data may be byte aligned. */ |
5326 | #ifdef md_cons_align | |
5327 | md_cons_align (1); | |
5328 | #endif | |
5329 | ||
252b5132 RH |
5330 | if (op == O_constant) |
5331 | { | |
5332 | /* If we've got a constant, emit the thing directly right now. */ | |
5333 | ||
5334 | valueT value = exp->X_add_number; | |
9136aa49 | 5335 | unsigned int size; |
252b5132 RH |
5336 | char *p; |
5337 | ||
5338 | size = sizeof_leb128 (value, sign); | |
5339 | p = frag_more (size); | |
9136aa49 DG |
5340 | if (output_leb128 (p, value, sign) > size) |
5341 | abort (); | |
252b5132 RH |
5342 | } |
5343 | else if (op == O_big) | |
5344 | { | |
5345 | /* O_big is a different sort of constant. */ | |
74def31d | 5346 | int nbr_digits = exp->X_add_number; |
9136aa49 | 5347 | unsigned int size; |
252b5132 RH |
5348 | char *p; |
5349 | ||
74def31d TG |
5350 | /* If the leading littenum is 0xffff, prepend a 0 to avoid confusion with |
5351 | a signed number. Unary operators like - or ~ always extend the | |
5352 | bignum to its largest size. */ | |
5353 | if (exp->X_unsigned | |
5354 | && nbr_digits < SIZE_OF_LARGE_NUMBER | |
5355 | && generic_bignum[nbr_digits - 1] == LITTLENUM_MASK) | |
5356 | generic_bignum[nbr_digits++] = 0; | |
5357 | ||
5358 | size = output_big_leb128 (NULL, generic_bignum, nbr_digits, sign); | |
252b5132 | 5359 | p = frag_more (size); |
74def31d | 5360 | if (output_big_leb128 (p, generic_bignum, nbr_digits, sign) > size) |
9136aa49 | 5361 | abort (); |
252b5132 RH |
5362 | } |
5363 | else | |
5364 | { | |
041ff4dd | 5365 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5366 | resolve things later. */ |
5367 | ||
041ff4dd | 5368 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5369 | make_expr_symbol (exp), 0, (char *) NULL); |
5370 | } | |
5371 | } | |
5372 | ||
5373 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5374 | ||
5375 | void | |
39e6acbd | 5376 | s_leb128 (int sign) |
252b5132 RH |
5377 | { |
5378 | expressionS exp; | |
5379 | ||
00bbdfe7 BW |
5380 | #ifdef md_flush_pending_output |
5381 | md_flush_pending_output (); | |
5382 | #endif | |
5383 | ||
041ff4dd NC |
5384 | do |
5385 | { | |
38cf168b | 5386 | expression (&exp); |
041ff4dd NC |
5387 | emit_leb128_expr (&exp, sign); |
5388 | } | |
5389 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5390 | |
5391 | input_line_pointer--; | |
5392 | demand_empty_rest_of_line (); | |
5393 | } | |
5394 | \f | |
38a57ae7 NC |
5395 | static void |
5396 | stringer_append_char (int c, int bitsize) | |
5397 | { | |
ec9ab52c JB |
5398 | if (c && in_bss ()) |
5399 | as_bad (_("attempt to store non-empty string in section `%s'"), | |
5400 | segment_name (now_seg)); | |
5401 | ||
38a57ae7 NC |
5402 | if (!target_big_endian) |
5403 | FRAG_APPEND_1_CHAR (c); | |
5404 | ||
5405 | switch (bitsize) | |
5406 | { | |
5407 | case 64: | |
5408 | FRAG_APPEND_1_CHAR (0); | |
5409 | FRAG_APPEND_1_CHAR (0); | |
5410 | FRAG_APPEND_1_CHAR (0); | |
5411 | FRAG_APPEND_1_CHAR (0); | |
5412 | /* Fall through. */ | |
5413 | case 32: | |
5414 | FRAG_APPEND_1_CHAR (0); | |
5415 | FRAG_APPEND_1_CHAR (0); | |
5416 | /* Fall through. */ | |
5417 | case 16: | |
5418 | FRAG_APPEND_1_CHAR (0); | |
5419 | /* Fall through. */ | |
5420 | case 8: | |
5421 | break; | |
5422 | default: | |
5423 | /* Called with invalid bitsize argument. */ | |
5424 | abort (); | |
5425 | break; | |
5426 | } | |
5427 | if (target_big_endian) | |
5428 | FRAG_APPEND_1_CHAR (c); | |
5429 | } | |
5430 | ||
5431 | /* Worker to do .ascii etc statements. | |
5432 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5433 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5434 | check it. |
5435 | Checks for end-of-line. | |
5436 | BITS_APPENDZERO says how many bits are in a target char. | |
5437 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5438 | |
5439 | void | |
38a57ae7 | 5440 | stringer (int bits_appendzero) |
252b5132 | 5441 | { |
38a57ae7 NC |
5442 | const int bitsize = bits_appendzero & ~7; |
5443 | const int append_zero = bits_appendzero & 1; | |
5444 | unsigned int c; | |
87975d2a | 5445 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5446 | char *start; |
87975d2a | 5447 | #endif |
252b5132 RH |
5448 | |
5449 | #ifdef md_flush_pending_output | |
5450 | md_flush_pending_output (); | |
5451 | #endif | |
5452 | ||
cc3f603a JM |
5453 | #ifdef md_cons_align |
5454 | md_cons_align (1); | |
5455 | #endif | |
5456 | ||
35c1a439 JB |
5457 | /* If we have been switched into the abs_section then we |
5458 | will not have an obstack onto which we can hang strings. */ | |
5459 | if (now_seg == absolute_section) | |
5460 | { | |
5461 | as_bad (_("strings must be placed into a section")); | |
5462 | ignore_rest_of_line (); | |
5463 | return; | |
5464 | } | |
5465 | ||
041ff4dd NC |
5466 | /* The following awkward logic is to parse ZERO or more strings, |
5467 | comma separated. Recall a string expression includes spaces | |
5468 | before the opening '\"' and spaces after the closing '\"'. | |
5469 | We fake a leading ',' if there is (supposed to be) | |
5470 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5471 | if (is_it_end_of_statement ()) |
5472 | { | |
041ff4dd NC |
5473 | c = 0; /* Skip loop. */ |
5474 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5475 | } |
5476 | else | |
5477 | { | |
041ff4dd | 5478 | c = ','; /* Do loop. */ |
252b5132 | 5479 | } |
d6415f6c | 5480 | |
252b5132 RH |
5481 | while (c == ',' || c == '<' || c == '"') |
5482 | { | |
5483 | SKIP_WHITESPACE (); | |
5484 | switch (*input_line_pointer) | |
5485 | { | |
5486 | case '\"': | |
041ff4dd | 5487 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5488 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5489 | start = input_line_pointer; |
87975d2a | 5490 | #endif |
38a57ae7 | 5491 | |
252b5132 | 5492 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5493 | stringer_append_char (c, bitsize); |
5494 | ||
3d955acb NC |
5495 | /* Treat "a" "b" as "ab". Even if we are appending zeros. */ |
5496 | SKIP_ALL_WHITESPACE (); | |
5497 | if (*input_line_pointer == '"') | |
5498 | break; | |
5499 | ||
252b5132 | 5500 | if (append_zero) |
38a57ae7 NC |
5501 | stringer_append_char (0, bitsize); |
5502 | ||
87975d2a | 5503 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5504 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5505 | will emit .string with a filename in the .debug section |
5506 | after a sequence of constants. See the comment in | |
5507 | emit_expr for the sequence. emit_expr will set | |
5508 | dwarf_file_string to non-zero if this string might be a | |
5509 | source file name. */ | |
252b5132 RH |
5510 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5511 | dwarf_file_string = 0; | |
5512 | else if (dwarf_file_string) | |
5513 | { | |
5514 | c = input_line_pointer[-1]; | |
5515 | input_line_pointer[-1] = '\0'; | |
5516 | listing_source_file (start); | |
5517 | input_line_pointer[-1] = c; | |
5518 | } | |
252b5132 RH |
5519 | #endif |
5520 | ||
5521 | break; | |
5522 | case '<': | |
5523 | input_line_pointer++; | |
5524 | c = get_single_number (); | |
38a57ae7 | 5525 | stringer_append_char (c, bitsize); |
252b5132 | 5526 | if (*input_line_pointer != '>') |
bdfb4455 WH |
5527 | { |
5528 | as_bad (_("expected <nn>")); | |
5529 | ignore_rest_of_line (); | |
5530 | return; | |
5531 | } | |
252b5132 RH |
5532 | input_line_pointer++; |
5533 | break; | |
5534 | case ',': | |
5535 | input_line_pointer++; | |
5536 | break; | |
5537 | } | |
5538 | SKIP_WHITESPACE (); | |
5539 | c = *input_line_pointer; | |
5540 | } | |
5541 | ||
5542 | demand_empty_rest_of_line (); | |
38a57ae7 | 5543 | } |
252b5132 RH |
5544 | \f |
5545 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5546 | high bits set. We'll probably also have trouble with | |
5547 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5548 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5549 | |
041ff4dd | 5550 | unsigned int |
39e6acbd | 5551 | next_char_of_string (void) |
252b5132 | 5552 | { |
3d540e93 | 5553 | unsigned int c; |
252b5132 RH |
5554 | |
5555 | c = *input_line_pointer++ & CHAR_MASK; | |
5556 | switch (c) | |
5557 | { | |
f49547a6 NC |
5558 | case 0: |
5559 | /* PR 20902: Do not advance past the end of the buffer. */ | |
5560 | -- input_line_pointer; | |
5561 | c = NOT_A_CHAR; | |
5562 | break; | |
5563 | ||
252b5132 RH |
5564 | case '\"': |
5565 | c = NOT_A_CHAR; | |
5566 | break; | |
5567 | ||
5568 | case '\n': | |
0e389e77 | 5569 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5570 | bump_line_counters (); |
5571 | break; | |
5572 | ||
252b5132 | 5573 | case '\\': |
16d87673 SB |
5574 | if (!TC_STRING_ESCAPES) |
5575 | break; | |
d9800776 | 5576 | switch (c = *input_line_pointer++ & CHAR_MASK) |
252b5132 RH |
5577 | { |
5578 | case 'b': | |
5579 | c = '\b'; | |
5580 | break; | |
5581 | ||
5582 | case 'f': | |
5583 | c = '\f'; | |
5584 | break; | |
5585 | ||
5586 | case 'n': | |
5587 | c = '\n'; | |
5588 | break; | |
5589 | ||
5590 | case 'r': | |
5591 | c = '\r'; | |
5592 | break; | |
5593 | ||
5594 | case 't': | |
5595 | c = '\t'; | |
5596 | break; | |
5597 | ||
5598 | case 'v': | |
5599 | c = '\013'; | |
5600 | break; | |
5601 | ||
5602 | case '\\': | |
5603 | case '"': | |
041ff4dd | 5604 | break; /* As itself. */ |
252b5132 RH |
5605 | |
5606 | case '0': | |
5607 | case '1': | |
5608 | case '2': | |
5609 | case '3': | |
5610 | case '4': | |
5611 | case '5': | |
5612 | case '6': | |
5613 | case '7': | |
5614 | case '8': | |
5615 | case '9': | |
5616 | { | |
5617 | long number; | |
5618 | int i; | |
5619 | ||
041ff4dd | 5620 | for (i = 0, number = 0; |
3882b010 | 5621 | ISDIGIT (c) && i < 3; |
041ff4dd | 5622 | c = *input_line_pointer++, i++) |
252b5132 RH |
5623 | { |
5624 | number = number * 8 + c - '0'; | |
5625 | } | |
f0e652b4 | 5626 | |
d9800776 | 5627 | c = number & CHAR_MASK; |
252b5132 RH |
5628 | } |
5629 | --input_line_pointer; | |
5630 | break; | |
5631 | ||
5632 | case 'x': | |
5633 | case 'X': | |
5634 | { | |
5635 | long number; | |
5636 | ||
5637 | number = 0; | |
5638 | c = *input_line_pointer++; | |
3882b010 | 5639 | while (ISXDIGIT (c)) |
252b5132 | 5640 | { |
3882b010 | 5641 | if (ISDIGIT (c)) |
252b5132 | 5642 | number = number * 16 + c - '0'; |
3882b010 | 5643 | else if (ISUPPER (c)) |
252b5132 RH |
5644 | number = number * 16 + c - 'A' + 10; |
5645 | else | |
5646 | number = number * 16 + c - 'a' + 10; | |
5647 | c = *input_line_pointer++; | |
5648 | } | |
d9800776 | 5649 | c = number & CHAR_MASK; |
252b5132 RH |
5650 | --input_line_pointer; |
5651 | } | |
5652 | break; | |
5653 | ||
5654 | case '\n': | |
041ff4dd | 5655 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5656 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5657 | c = '\n'; |
5658 | bump_line_counters (); | |
5659 | break; | |
5660 | ||
f49547a6 NC |
5661 | case 0: |
5662 | /* Do not advance past the end of the buffer. */ | |
5663 | -- input_line_pointer; | |
5664 | c = NOT_A_CHAR; | |
5665 | break; | |
5666 | ||
252b5132 RH |
5667 | default: |
5668 | ||
5669 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5670 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5671 | c = '?'; |
5672 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5673 | ||
5674 | break; | |
041ff4dd | 5675 | } |
252b5132 | 5676 | break; |
252b5132 RH |
5677 | |
5678 | default: | |
5679 | break; | |
041ff4dd | 5680 | } |
252b5132 | 5681 | return (c); |
041ff4dd | 5682 | } |
252b5132 RH |
5683 | \f |
5684 | static segT | |
3d540e93 | 5685 | get_segmented_expression (expressionS *expP) |
252b5132 | 5686 | { |
3d540e93 | 5687 | segT retval; |
252b5132 RH |
5688 | |
5689 | retval = expression (expP); | |
5690 | if (expP->X_op == O_illegal | |
5691 | || expP->X_op == O_absent | |
5692 | || expP->X_op == O_big) | |
5693 | { | |
0e389e77 | 5694 | as_bad (_("expected address expression")); |
252b5132 RH |
5695 | expP->X_op = O_constant; |
5696 | expP->X_add_number = 0; | |
5697 | retval = absolute_section; | |
5698 | } | |
5699 | return retval; | |
5700 | } | |
5701 | ||
041ff4dd | 5702 | static segT |
3d540e93 | 5703 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5704 | { |
259af69e | 5705 | segT retval = get_segmented_expression (expP); |
252b5132 | 5706 | |
259af69e | 5707 | if (retval == undefined_section) |
252b5132 RH |
5708 | { |
5709 | /* There is no easy way to extract the undefined symbol from the | |
5710 | expression. */ | |
5711 | if (expP->X_add_symbol != NULL | |
5712 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5713 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5714 | S_GET_NAME (expP->X_add_symbol)); | |
5715 | else | |
5716 | as_warn (_("some symbol undefined; zero assumed")); | |
5717 | retval = absolute_section; | |
5718 | expP->X_op = O_constant; | |
5719 | expP->X_add_number = 0; | |
5720 | } | |
259af69e | 5721 | return retval; |
041ff4dd | 5722 | } |
252b5132 | 5723 | |
041ff4dd | 5724 | char /* Return terminator. */ |
39e6acbd | 5725 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5726 | { |
5727 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5728 | *val_pointer = (long) get_absolute_expression (); | |
5729 | return (*input_line_pointer++); | |
5730 | } | |
5731 | \f | |
041ff4dd NC |
5732 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5733 | Give a warning if that happens. */ | |
5734 | ||
252b5132 | 5735 | char * |
39e6acbd | 5736 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5737 | { |
3d540e93 | 5738 | char *s; |
252b5132 RH |
5739 | |
5740 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5741 | { | |
3d540e93 | 5742 | int len; |
252b5132 RH |
5743 | |
5744 | for (len = *len_pointer; len > 0; len--) | |
5745 | { | |
70433886 | 5746 | if (s[len - 1] == 0) |
252b5132 RH |
5747 | { |
5748 | s = 0; | |
252b5132 | 5749 | *len_pointer = 0; |
0e389e77 | 5750 | as_bad (_("this string may not contain \'\\0\'")); |
70433886 | 5751 | break; |
252b5132 RH |
5752 | } |
5753 | } | |
5754 | } | |
f0e652b4 | 5755 | |
252b5132 RH |
5756 | return s; |
5757 | } | |
5758 | \f | |
041ff4dd NC |
5759 | /* Demand string, but return a safe (=private) copy of the string. |
5760 | Return NULL if we can't read a string here. */ | |
5761 | ||
252b5132 | 5762 | char * |
39e6acbd | 5763 | demand_copy_string (int *lenP) |
252b5132 | 5764 | { |
3d540e93 NC |
5765 | unsigned int c; |
5766 | int len; | |
252b5132 RH |
5767 | char *retval; |
5768 | ||
5769 | len = 0; | |
5770 | SKIP_WHITESPACE (); | |
5771 | if (*input_line_pointer == '\"') | |
5772 | { | |
041ff4dd | 5773 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5774 | |
5775 | while (is_a_char (c = next_char_of_string ())) | |
5776 | { | |
5777 | obstack_1grow (¬es, c); | |
5778 | len++; | |
5779 | } | |
5780 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5781 | null terminated string. */ |
252b5132 | 5782 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5783 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5784 | } |
5785 | else | |
5786 | { | |
c95b35a9 | 5787 | as_bad (_("missing string")); |
252b5132 RH |
5788 | retval = NULL; |
5789 | ignore_rest_of_line (); | |
5790 | } | |
5791 | *lenP = len; | |
5792 | return (retval); | |
041ff4dd | 5793 | } |
252b5132 | 5794 | \f |
041ff4dd | 5795 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5796 | |
041ff4dd | 5797 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5798 | |
041ff4dd NC |
5799 | Out: 1 if input_line_pointer->end-of-line. */ |
5800 | ||
5801 | int | |
39e6acbd | 5802 | is_it_end_of_statement (void) |
252b5132 RH |
5803 | { |
5804 | SKIP_WHITESPACE (); | |
5805 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5806 | } |
252b5132 | 5807 | |
041ff4dd | 5808 | void |
39e6acbd | 5809 | equals (char *sym_name, int reassign) |
252b5132 | 5810 | { |
252b5132 | 5811 | char *stop = NULL; |
fb25138b | 5812 | char stopc = 0; |
252b5132 RH |
5813 | |
5814 | input_line_pointer++; | |
5815 | if (*input_line_pointer == '=') | |
5816 | input_line_pointer++; | |
9497f5ac NC |
5817 | if (reassign < 0 && *input_line_pointer == '=') |
5818 | input_line_pointer++; | |
252b5132 RH |
5819 | |
5820 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5821 | input_line_pointer++; | |
5822 | ||
5823 | if (flag_mri) | |
5824 | stop = mri_comment_field (&stopc); | |
5825 | ||
9497f5ac | 5826 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5827 | |
5828 | if (flag_mri) | |
31d20a21 AM |
5829 | { |
5830 | demand_empty_rest_of_line (); | |
5831 | mri_comment_end (stop, stopc); | |
5832 | } | |
041ff4dd | 5833 | } |
252b5132 | 5834 | |
7e005732 NC |
5835 | /* .incbin -- include a file verbatim at the current location. */ |
5836 | ||
5837 | void | |
39e6acbd | 5838 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5839 | { |
5840 | FILE * binfile; | |
5841 | char * path; | |
5842 | char * filename; | |
5843 | char * binfrag; | |
5844 | long skip = 0; | |
5845 | long count = 0; | |
5846 | long bytes; | |
5847 | int len; | |
5848 | ||
5849 | #ifdef md_flush_pending_output | |
5850 | md_flush_pending_output (); | |
5851 | #endif | |
5852 | ||
cc3f603a JM |
5853 | #ifdef md_cons_align |
5854 | md_cons_align (1); | |
5855 | #endif | |
5856 | ||
7e005732 NC |
5857 | SKIP_WHITESPACE (); |
5858 | filename = demand_copy_string (& len); | |
5859 | if (filename == NULL) | |
5860 | return; | |
5861 | ||
5862 | SKIP_WHITESPACE (); | |
5863 | ||
5864 | /* Look for optional skip and count. */ | |
5865 | if (* input_line_pointer == ',') | |
5866 | { | |
5867 | ++ input_line_pointer; | |
5868 | skip = get_absolute_expression (); | |
5869 | ||
5870 | SKIP_WHITESPACE (); | |
5871 | ||
5872 | if (* input_line_pointer == ',') | |
5873 | { | |
5874 | ++ input_line_pointer; | |
5875 | ||
5876 | count = get_absolute_expression (); | |
5877 | if (count == 0) | |
5878 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5879 | ||
5880 | SKIP_WHITESPACE (); | |
5881 | } | |
5882 | } | |
5883 | ||
5884 | demand_empty_rest_of_line (); | |
5885 | ||
5886 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5887 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5888 | if (binfile == NULL) |
5889 | { | |
5890 | int i; | |
5891 | ||
8860a416 | 5892 | path = XNEWVEC (char, (unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5893 | |
5894 | for (i = 0; i < include_dir_count; i++) | |
5895 | { | |
5896 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5897 | ||
f740e790 | 5898 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5899 | if (binfile != NULL) |
5900 | break; | |
5901 | } | |
5902 | ||
5903 | if (binfile == NULL) | |
5904 | as_bad (_("file not found: %s"), filename); | |
5905 | } | |
5906 | else | |
5907 | path = xstrdup (filename); | |
5908 | ||
5909 | if (binfile) | |
5910 | { | |
f740e790 | 5911 | long file_len; |
284beb43 | 5912 | struct stat filestat; |
f740e790 | 5913 | |
284beb43 NC |
5914 | if (fstat (fileno (binfile), &filestat) != 0 |
5915 | || ! S_ISREG (filestat.st_mode) | |
5916 | || S_ISDIR (filestat.st_mode)) | |
5917 | { | |
5918 | as_bad (_("unable to include `%s'"), path); | |
5919 | goto done; | |
5920 | } | |
5921 | ||
7e005732 NC |
5922 | register_dependency (path); |
5923 | ||
5924 | /* Compute the length of the file. */ | |
5925 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5926 | { | |
5927 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5928 | goto done; | |
5929 | } | |
f740e790 | 5930 | file_len = ftell (binfile); |
7e005732 | 5931 | |
c556cc9c | 5932 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5933 | if (count == 0) |
c556cc9c | 5934 | count = file_len - skip; |
7e005732 | 5935 | |
c556cc9c | 5936 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5937 | { |
c556cc9c | 5938 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5939 | skip, count, file_len); |
7e005732 NC |
5940 | goto done; |
5941 | } | |
5942 | ||
5943 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5944 | { | |
5945 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5946 | goto done; | |
5947 | } | |
5948 | ||
5949 | /* Allocate frag space and store file contents in it. */ | |
5950 | binfrag = frag_more (count); | |
5951 | ||
5952 | bytes = fread (binfrag, 1, count, binfile); | |
5953 | if (bytes < count) | |
5954 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5955 | path, bytes, count); | |
5956 | } | |
dc1e8a47 | 5957 | done: |
7e005732 NC |
5958 | if (binfile != NULL) |
5959 | fclose (binfile); | |
9fbb53c7 | 5960 | free (path); |
7e005732 NC |
5961 | } |
5962 | ||
041ff4dd | 5963 | /* .include -- include a file at this point. */ |
252b5132 | 5964 | |
041ff4dd | 5965 | void |
39e6acbd | 5966 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5967 | { |
252b5132 RH |
5968 | char *filename; |
5969 | int i; | |
1e9cc1c2 | 5970 | FILE *try_file; |
252b5132 RH |
5971 | char *path; |
5972 | ||
041ff4dd | 5973 | if (!flag_m68k_mri) |
252b5132 RH |
5974 | { |
5975 | filename = demand_copy_string (&i); | |
5976 | if (filename == NULL) | |
5977 | { | |
5978 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5979 | called ignore_rest_of_line. */ |
252b5132 RH |
5980 | return; |
5981 | } | |
5982 | } | |
5983 | else | |
5984 | { | |
5985 | SKIP_WHITESPACE (); | |
5986 | i = 0; | |
041ff4dd | 5987 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5988 | && *input_line_pointer != ' ' |
5989 | && *input_line_pointer != '\t') | |
5990 | { | |
5991 | obstack_1grow (¬es, *input_line_pointer); | |
5992 | ++input_line_pointer; | |
5993 | ++i; | |
5994 | } | |
f0e652b4 | 5995 | |
252b5132 | 5996 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5997 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5998 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5999 | ++input_line_pointer; |
6000 | } | |
f0e652b4 | 6001 | |
252b5132 | 6002 | demand_empty_rest_of_line (); |
8860a416 TS |
6003 | path = XNEWVEC (char, (unsigned long) i |
6004 | + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 6005 | |
252b5132 RH |
6006 | for (i = 0; i < include_dir_count; i++) |
6007 | { | |
6008 | strcpy (path, include_dirs[i]); | |
6009 | strcat (path, "/"); | |
6010 | strcat (path, filename); | |
1e9cc1c2 | 6011 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 6012 | { |
1e9cc1c2 | 6013 | fclose (try_file); |
252b5132 RH |
6014 | goto gotit; |
6015 | } | |
6016 | } | |
f0e652b4 | 6017 | |
252b5132 RH |
6018 | free (path); |
6019 | path = filename; | |
dc1e8a47 | 6020 | gotit: |
041ff4dd | 6021 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 6022 | register_dependency (path); |
9f10757c | 6023 | input_scrub_insert_file (path); |
041ff4dd | 6024 | } |
252b5132 | 6025 | |
041ff4dd | 6026 | void |
39e6acbd | 6027 | add_include_dir (char *path) |
252b5132 RH |
6028 | { |
6029 | int i; | |
6030 | ||
6031 | if (include_dir_count == 0) | |
6032 | { | |
e0471c16 | 6033 | include_dirs = XNEWVEC (const char *, 2); |
041ff4dd | 6034 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
6035 | include_dir_count = 2; |
6036 | } | |
6037 | else | |
6038 | { | |
6039 | include_dir_count++; | |
e0471c16 TS |
6040 | include_dirs = XRESIZEVEC (const char *, include_dirs, |
6041 | include_dir_count); | |
252b5132 RH |
6042 | } |
6043 | ||
041ff4dd | 6044 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
6045 | |
6046 | i = strlen (path); | |
6047 | if (i > include_dir_maxlen) | |
6048 | include_dir_maxlen = i; | |
041ff4dd | 6049 | } |
252b5132 RH |
6050 | \f |
6051 | /* Output debugging information to denote the source file. */ | |
6052 | ||
6053 | static void | |
39e6acbd | 6054 | generate_file_debug (void) |
252b5132 RH |
6055 | { |
6056 | if (debug_type == DEBUG_STABS) | |
6057 | stabs_generate_asm_file (); | |
6058 | } | |
6059 | ||
6060 | /* Output line number debugging information for the current source line. */ | |
6061 | ||
6062 | void | |
39e6acbd | 6063 | generate_lineno_debug (void) |
252b5132 | 6064 | { |
252b5132 RH |
6065 | switch (debug_type) |
6066 | { | |
6067 | case DEBUG_UNSPECIFIED: | |
6068 | case DEBUG_NONE: | |
4dc7ead9 | 6069 | case DEBUG_DWARF: |
252b5132 RH |
6070 | break; |
6071 | case DEBUG_STABS: | |
6072 | stabs_generate_asm_lineno (); | |
6073 | break; | |
6074 | case DEBUG_ECOFF: | |
6075 | ecoff_generate_asm_lineno (); | |
6076 | break; | |
252b5132 | 6077 | case DEBUG_DWARF2: |
4dc7ead9 RH |
6078 | /* ??? We could here indicate to dwarf2dbg.c that something |
6079 | has changed. However, since there is additional backend | |
6080 | support that is required (calling dwarf2_emit_insn), we | |
6081 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
6082 | break; |
6083 | } | |
6084 | } | |
6085 | ||
6086 | /* Output debugging information to mark a function entry point or end point. | |
6087 | END_P is zero for .func, and non-zero for .endfunc. */ | |
6088 | ||
6089 | void | |
39e6acbd | 6090 | s_func (int end_p) |
252b5132 RH |
6091 | { |
6092 | do_s_func (end_p, NULL); | |
6093 | } | |
6094 | ||
6095 | /* Subroutine of s_func so targets can choose a different default prefix. | |
6096 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
6097 | ||
87c245cc | 6098 | static void |
39e6acbd | 6099 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
6100 | { |
6101 | /* Record the current function so that we can issue an error message for | |
6102 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
6103 | arguments. */ | |
6104 | static char *current_name; | |
6105 | static char *current_label; | |
6106 | ||
6107 | if (end_p) | |
6108 | { | |
6109 | if (current_name == NULL) | |
6110 | { | |
6111 | as_bad (_("missing .func")); | |
6112 | ignore_rest_of_line (); | |
6113 | return; | |
6114 | } | |
6115 | ||
6116 | if (debug_type == DEBUG_STABS) | |
6117 | stabs_generate_asm_endfunc (current_name, current_label); | |
6118 | ||
6119 | current_name = current_label = NULL; | |
6120 | } | |
6121 | else /* ! end_p */ | |
6122 | { | |
041ff4dd NC |
6123 | char *name, *label; |
6124 | char delim1, delim2; | |
252b5132 RH |
6125 | |
6126 | if (current_name != NULL) | |
6127 | { | |
6128 | as_bad (_(".endfunc missing for previous .func")); | |
6129 | ignore_rest_of_line (); | |
6130 | return; | |
6131 | } | |
6132 | ||
d02603dc | 6133 | delim1 = get_symbol_name (& name); |
252b5132 RH |
6134 | name = xstrdup (name); |
6135 | *input_line_pointer = delim1; | |
d02603dc | 6136 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
6137 | if (*input_line_pointer != ',') |
6138 | { | |
6139 | if (default_prefix) | |
05f4ab67 AM |
6140 | { |
6141 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
6142 | as_fatal ("%s", xstrerror (errno)); | |
6143 | } | |
252b5132 RH |
6144 | else |
6145 | { | |
7be1c489 | 6146 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
6147 | /* Missing entry point, use function's name with the leading |
6148 | char prepended. */ | |
6149 | if (leading_char) | |
05f4ab67 AM |
6150 | { |
6151 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
6152 | as_fatal ("%s", xstrerror (errno)); | |
6153 | } | |
252b5132 RH |
6154 | else |
6155 | label = name; | |
6156 | } | |
6157 | } | |
6158 | else | |
6159 | { | |
6160 | ++input_line_pointer; | |
6161 | SKIP_WHITESPACE (); | |
d02603dc | 6162 | delim2 = get_symbol_name (& label); |
252b5132 | 6163 | label = xstrdup (label); |
d02603dc | 6164 | restore_line_pointer (delim2); |
252b5132 RH |
6165 | } |
6166 | ||
6167 | if (debug_type == DEBUG_STABS) | |
6168 | stabs_generate_asm_func (name, label); | |
6169 | ||
6170 | current_name = name; | |
6171 | current_label = label; | |
6172 | } | |
6173 | ||
6174 | demand_empty_rest_of_line (); | |
6175 | } | |
6176 | \f | |
fa94de6b RM |
6177 | #ifdef HANDLE_BUNDLE |
6178 | ||
6179 | void | |
6180 | s_bundle_align_mode (int arg ATTRIBUTE_UNUSED) | |
6181 | { | |
6182 | unsigned int align = get_absolute_expression (); | |
6183 | SKIP_WHITESPACE (); | |
6184 | demand_empty_rest_of_line (); | |
6185 | ||
6186 | if (align > (unsigned int) TC_ALIGN_LIMIT) | |
6187 | as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"), | |
6188 | (unsigned int) TC_ALIGN_LIMIT); | |
6189 | ||
6190 | if (bundle_lock_frag != NULL) | |
6191 | { | |
6192 | as_bad (_("cannot change .bundle_align_mode inside .bundle_lock")); | |
6193 | return; | |
6194 | } | |
6195 | ||
6196 | bundle_align_p2 = align; | |
6197 | } | |
6198 | ||
6199 | void | |
6200 | s_bundle_lock (int arg ATTRIBUTE_UNUSED) | |
6201 | { | |
6202 | demand_empty_rest_of_line (); | |
6203 | ||
6204 | if (bundle_align_p2 == 0) | |
6205 | { | |
6206 | as_bad (_(".bundle_lock is meaningless without .bundle_align_mode")); | |
6207 | return; | |
6208 | } | |
6209 | ||
d416e51d | 6210 | if (bundle_lock_depth == 0) |
fa94de6b | 6211 | { |
d416e51d RM |
6212 | bundle_lock_frchain = frchain_now; |
6213 | bundle_lock_frag = start_bundle (); | |
fa94de6b | 6214 | } |
d416e51d | 6215 | ++bundle_lock_depth; |
fa94de6b RM |
6216 | } |
6217 | ||
6218 | void | |
6219 | s_bundle_unlock (int arg ATTRIBUTE_UNUSED) | |
6220 | { | |
6221 | unsigned int size; | |
6222 | ||
6223 | demand_empty_rest_of_line (); | |
6224 | ||
6225 | if (bundle_lock_frag == NULL) | |
6226 | { | |
6227 | as_bad (_(".bundle_unlock without preceding .bundle_lock")); | |
6228 | return; | |
6229 | } | |
6230 | ||
6231 | gas_assert (bundle_align_p2 > 0); | |
6232 | ||
d416e51d RM |
6233 | gas_assert (bundle_lock_depth > 0); |
6234 | if (--bundle_lock_depth > 0) | |
6235 | return; | |
6236 | ||
fa94de6b RM |
6237 | size = pending_bundle_size (bundle_lock_frag); |
6238 | ||
e54e9ac5 AM |
6239 | if (size > 1U << bundle_align_p2) |
6240 | as_bad (_(".bundle_lock sequence is %u bytes, " | |
6241 | "but bundle size is only %u bytes"), | |
6242 | size, 1u << bundle_align_p2); | |
fa94de6b RM |
6243 | else |
6244 | finish_bundle (bundle_lock_frag, size); | |
6245 | ||
6246 | bundle_lock_frag = NULL; | |
6247 | bundle_lock_frchain = NULL; | |
6248 | } | |
6249 | ||
6250 | #endif /* HANDLE_BUNDLE */ | |
6251 | \f | |
041ff4dd | 6252 | void |
39e6acbd | 6253 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6254 | { |
40a4d956 | 6255 | ignore_rest_of_line (); |
252b5132 RH |
6256 | } |
6257 | ||
252b5132 | 6258 | void |
39e6acbd | 6259 | read_print_statistics (FILE *file) |
252b5132 | 6260 | { |
32e4c1c2 | 6261 | htab_print_statistics (file, "pseudo-op table", po_hash); |
252b5132 RH |
6262 | } |
6263 | ||
041ff4dd NC |
6264 | /* Inserts the given line into the input stream. |
6265 | ||
9f10757c TW |
6266 | This call avoids macro/conditionals nesting checking, since the contents of |
6267 | the line are assumed to replace the contents of a line already scanned. | |
6268 | ||
47eebc20 | 6269 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
6270 | called by md_start_line_hook(). The given line is assumed to already be |
6271 | properly scrubbed. */ | |
6272 | ||
6273 | void | |
39e6acbd | 6274 | input_scrub_insert_line (const char *line) |
9f10757c TW |
6275 | { |
6276 | sb newline; | |
d2ae702c L |
6277 | size_t len = strlen (line); |
6278 | sb_build (&newline, len); | |
6279 | sb_add_buffer (&newline, line, len); | |
9f10757c TW |
6280 | input_scrub_include_sb (&newline, input_line_pointer, 0); |
6281 | sb_kill (&newline); | |
6282 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6283 | } | |
6284 | ||
6285 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 6286 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
6287 | |
6288 | void | |
39e6acbd | 6289 | input_scrub_insert_file (char *path) |
9f10757c TW |
6290 | { |
6291 | input_scrub_include_file (path, input_line_pointer); | |
6292 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6293 | } | |
40a4d956 JB |
6294 | |
6295 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
6296 | ||
6297 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
6298 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
6299 | #endif | |
6300 | ||
6301 | static char * | |
7592cfd7 NC |
6302 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
6303 | int in_macro) | |
40a4d956 JB |
6304 | { |
6305 | char inquote = '\0'; | |
6306 | int inescape = 0; | |
6307 | ||
6308 | while (!is_end_of_line[(unsigned char) *s] | |
6309 | || (inquote && !ISCNTRL (*s)) | |
6310 | || (inquote == '\'' && flag_mri) | |
6311 | #ifdef TC_EOL_IN_INSN | |
6312 | || (insn && TC_EOL_IN_INSN (s)) | |
6313 | #endif | |
7592cfd7 NC |
6314 | /* PR 6926: When we are parsing the body of a macro the sequence |
6315 | \@ is special - it refers to the invocation count. If the @ | |
6316 | character happens to be registered as a line-separator character | |
6317 | by the target, then the is_end_of_line[] test above will have | |
6318 | returned true, but we need to ignore the line separating | |
6319 | semantics in this particular case. */ | |
6320 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
6321 | ) |
6322 | { | |
6323 | if (mri_string && *s == '\'') | |
6324 | inquote ^= *s; | |
6325 | else if (inescape) | |
6326 | inescape = 0; | |
6327 | else if (*s == '\\') | |
6328 | inescape = 1; | |
6329 | else if (!inquote | |
6330 | ? *s == '"' | |
6331 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
6332 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
6333 | #endif | |
6334 | : *s == inquote) | |
6335 | inquote ^= *s; | |
6336 | ++s; | |
6337 | } | |
6338 | if (inquote) | |
6339 | as_warn (_("missing closing `%c'"), inquote); | |
e74211b6 | 6340 | if (inescape && !ignore_input ()) |
40a4d956 JB |
6341 | as_warn (_("stray `\\'")); |
6342 | return s; | |
6343 | } | |
6344 | ||
6345 | char * | |
6346 | find_end_of_line (char *s, int mri_string) | |
6347 | { | |
7592cfd7 | 6348 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 6349 | } |
1181551e NC |
6350 | |
6351 | static char *saved_ilp = NULL; | |
6352 | static char *saved_limit; | |
6353 | ||
6354 | /* Use BUF as a temporary input pointer for calling other functions in this | |
6355 | file. BUF must be a C string, so that its end can be found by strlen. | |
6356 | Also sets the buffer_limit variable (local to this file) so that buffer | |
6357 | overruns should not occur. Saves the current input line pointer so that | |
6358 | it can be restored by calling restore_ilp(). | |
6359 | ||
af60449c | 6360 | Does not support recursion. */ |
1181551e NC |
6361 | |
6362 | void | |
6363 | temp_ilp (char *buf) | |
6364 | { | |
6365 | gas_assert (saved_ilp == NULL); | |
6366 | gas_assert (buf != NULL); | |
6367 | ||
6368 | saved_ilp = input_line_pointer; | |
6369 | saved_limit = buffer_limit; | |
6370 | /* Prevent the assert in restore_ilp from triggering if | |
6371 | the input_line_pointer has not yet been initialised. */ | |
6372 | if (saved_ilp == NULL) | |
6373 | saved_limit = saved_ilp = (char *) ""; | |
6374 | ||
6375 | input_line_pointer = buf; | |
6376 | buffer_limit = buf + strlen (buf); | |
5b7c81bd | 6377 | input_from_string = true; |
1181551e NC |
6378 | } |
6379 | ||
6380 | /* Restore a saved input line pointer. */ | |
6381 | ||
6382 | void | |
6383 | restore_ilp (void) | |
6384 | { | |
6385 | gas_assert (saved_ilp != NULL); | |
6386 | ||
6387 | input_line_pointer = saved_ilp; | |
6388 | buffer_limit = saved_limit; | |
5b7c81bd | 6389 | input_from_string = false; |
1181551e NC |
6390 | |
6391 | saved_ilp = NULL; | |
6392 | } |