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. */ |
2469b3c5 | 67 | bfd_boolean input_from_string = FALSE; |
252b5132 RH |
68 | |
69 | #if BITS_PER_CHAR != 8 | |
70 | /* The following table is indexed by[(char)] and will break if | |
71 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
72 | die horribly; | |
73 | #endif | |
74 | ||
75 | #ifndef LEX_AT | |
252b5132 RH |
76 | #define LEX_AT 0 |
77 | #endif | |
78 | ||
79 | #ifndef LEX_BR | |
80 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
81 | #define LEX_BR 0 | |
82 | #endif | |
83 | ||
84 | #ifndef LEX_PCT | |
85 | /* The Delta 68k assembler permits % inside label names. */ | |
86 | #define LEX_PCT 0 | |
87 | #endif | |
88 | ||
89 | #ifndef LEX_QM | |
90 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
91 | #define LEX_QM 0 | |
92 | #endif | |
93 | ||
58b5739a | 94 | #ifndef LEX_HASH |
800eeca4 JW |
95 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
96 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
97 | #define LEX_HASH 0 |
98 | #endif | |
99 | ||
252b5132 | 100 | #ifndef LEX_DOLLAR |
252b5132 RH |
101 | #define LEX_DOLLAR 3 |
102 | #endif | |
103 | ||
104 | #ifndef LEX_TILDE | |
105 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
106 | #define LEX_TILDE 0 | |
107 | #endif | |
108 | ||
041ff4dd | 109 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 110 | char lex_type[256] = { |
252b5132 RH |
111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
112 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 113 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
114 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
115 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
116 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
117 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 118 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
124 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
125 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
126 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
127 | }; | |
128 | ||
041ff4dd | 129 | /* In: a character. |
d67ffd56 L |
130 | Out: 1 if this character ends a line. |
131 | 2 if this character is a line separator. */ | |
ef99799a | 132 | char is_end_of_line[256] = { |
252b5132 | 133 | #ifdef CR_EOL |
b75c0c92 | 134 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 135 | #else |
b75c0c92 | 136 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 137 | #endif |
b75c0c92 AM |
138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
150 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
151 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
152 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 153 | }; |
252b5132 | 154 | |
a8a3b3b2 | 155 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
156 | char original_case_string[128]; |
157 | #endif | |
158 | ||
041ff4dd | 159 | /* Functions private to this file. */ |
252b5132 | 160 | |
041ff4dd NC |
161 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
162 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 163 | |
041ff4dd NC |
164 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
165 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
166 | internals manual. */ | |
252b5132 RH |
167 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
168 | ||
041ff4dd | 169 | /* Variables for handling include file directory table. */ |
252b5132 | 170 | |
041ff4dd | 171 | /* Table of pointers to directories to search for .include's. */ |
e0471c16 | 172 | const char **include_dirs; |
041ff4dd NC |
173 | |
174 | /* How many are in the table. */ | |
175 | int include_dir_count; | |
176 | ||
177 | /* Length of longest in table. */ | |
178 | int include_dir_maxlen = 1; | |
252b5132 RH |
179 | |
180 | #ifndef WORKING_DOT_WORD | |
181 | struct broken_word *broken_words; | |
182 | int new_broken_words; | |
183 | #endif | |
184 | ||
185 | /* The current offset into the absolute section. We don't try to | |
186 | build frags in the absolute section, since no data can be stored | |
187 | there. We just keep track of the current offset. */ | |
188 | addressT abs_section_offset; | |
189 | ||
190 | /* If this line had an MRI style label, it is stored in this variable. | |
191 | This is used by some of the MRI pseudo-ops. */ | |
192 | symbolS *line_label; | |
193 | ||
194 | /* This global variable is used to support MRI common sections. We | |
195 | translate such sections into a common symbol. This variable is | |
196 | non-NULL when we are in an MRI common section. */ | |
197 | symbolS *mri_common_symbol; | |
198 | ||
199 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
200 | need to align to an even byte boundary unless the next pseudo-op is | |
201 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
202 | may be needed. */ | |
203 | static int mri_pending_align; | |
204 | ||
205 | #ifndef NO_LISTING | |
206 | #ifdef OBJ_ELF | |
207 | /* This variable is set to be non-zero if the next string we see might | |
208 | be the name of the source file in DWARF debugging information. See | |
209 | the comment in emit_expr for the format we look for. */ | |
210 | static int dwarf_file_string; | |
211 | #endif | |
212 | #endif | |
213 | ||
fa94de6b RM |
214 | /* If the target defines the md_frag_max_var hook then we know |
215 | enough to implement the .bundle_align_mode features. */ | |
216 | #ifdef md_frag_max_var | |
217 | # define HANDLE_BUNDLE | |
218 | #endif | |
219 | ||
220 | #ifdef HANDLE_BUNDLE | |
221 | /* .bundle_align_mode sets this. Normally it's zero. When nonzero, | |
222 | it's the exponent of the bundle size, and aligned instruction bundle | |
223 | mode is in effect. */ | |
224 | static unsigned int bundle_align_p2; | |
225 | ||
226 | /* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets | |
227 | bundle_lock_frag to frag_now and then starts a new frag with | |
228 | frag_align_code. At the same time, bundle_lock_frain gets frchain_now, | |
229 | so that .bundle_unlock can verify that we didn't change segments. | |
230 | .bundle_unlock resets both to NULL. If we detect a bundling violation, | |
231 | then we reset bundle_lock_frchain to NULL as an indicator that we've | |
232 | already diagnosed the error with as_bad and don't need a cascade of | |
233 | redundant errors, but bundle_lock_frag remains set to indicate that | |
234 | we are expecting to see .bundle_unlock. */ | |
235 | static fragS *bundle_lock_frag; | |
236 | static frchainS *bundle_lock_frchain; | |
d416e51d RM |
237 | |
238 | /* This is incremented by .bundle_lock and decremented by .bundle_unlock, | |
239 | to allow nesting. */ | |
240 | static unsigned int bundle_lock_depth; | |
fa94de6b RM |
241 | #endif |
242 | ||
87c245cc | 243 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd | 244 | static void s_align (int, int); |
caa32fe5 | 245 | static void s_altmacro (int); |
057f53c1 | 246 | static void s_bad_end (int); |
05e9452c | 247 | static void s_reloc (int); |
39e6acbd | 248 | static int hex_float (int, char *); |
39e6acbd KH |
249 | static segT get_known_segmented_expression (expressionS * expP); |
250 | static void pobegin (void); | |
39a45edc | 251 | static size_t get_non_macro_line_sb (sb *); |
39e6acbd | 252 | static void generate_file_debug (void); |
7592cfd7 | 253 | static char *_find_end_of_line (char *, int, int, int); |
252b5132 | 254 | \f |
252b5132 | 255 | void |
39e6acbd | 256 | read_begin (void) |
252b5132 RH |
257 | { |
258 | const char *p; | |
259 | ||
260 | pobegin (); | |
261 | obj_read_begin_hook (); | |
262 | ||
263 | /* Something close -- but not too close -- to a multiple of 1024. | |
264 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
265 | obstack_begin (¬es, chunksize); | |
266 | obstack_begin (&cond_obstack, chunksize); | |
267 | ||
2e6976a8 DG |
268 | #ifndef tc_line_separator_chars |
269 | #define tc_line_separator_chars line_separator_chars | |
270 | #endif | |
041ff4dd | 271 | /* Use machine dependent syntax. */ |
2e6976a8 | 272 | for (p = tc_line_separator_chars; *p; p++) |
d67ffd56 | 273 | is_end_of_line[(unsigned char) *p] = 2; |
041ff4dd | 274 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
275 | |
276 | if (flag_mri) | |
277 | lex_type['?'] = 3; | |
278 | } | |
279 | \f | |
cc1bc22a | 280 | #ifndef TC_ADDRESS_BYTES |
cc1bc22a AM |
281 | #define TC_ADDRESS_BYTES address_bytes |
282 | ||
283 | static inline int | |
284 | address_bytes (void) | |
285 | { | |
286 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
287 | contain an address. */ | |
288 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
289 | n |= n >> 1; | |
290 | n |= n >> 2; | |
291 | n += 1; | |
292 | return n; | |
293 | } | |
294 | #endif | |
cc1bc22a | 295 | |
041ff4dd | 296 | /* Set up pseudo-op tables. */ |
252b5132 | 297 | |
32e4c1c2 ML |
298 | struct po_entry |
299 | { | |
300 | const char *poc_name; | |
301 | ||
302 | const pseudo_typeS *pop; | |
303 | }; | |
304 | ||
305 | typedef struct po_entry po_entry_t; | |
306 | ||
307 | /* Hash function for a po_entry. */ | |
308 | ||
309 | static hashval_t | |
310 | hash_po_entry (const void *e) | |
311 | { | |
312 | const po_entry_t *entry = (const po_entry_t *) e; | |
313 | return htab_hash_string (entry->poc_name); | |
314 | } | |
315 | ||
316 | /* Equality function for a po_entry. */ | |
317 | ||
318 | static int | |
319 | eq_po_entry (const void *a, const void *b) | |
320 | { | |
321 | const po_entry_t *ea = (const po_entry_t *) a; | |
322 | const po_entry_t *eb = (const po_entry_t *) b; | |
323 | ||
324 | return strcmp (ea->poc_name, eb->poc_name) == 0; | |
325 | } | |
326 | ||
327 | static po_entry_t * | |
328 | po_entry_alloc (const char *poc_name, const pseudo_typeS *pop) | |
329 | { | |
330 | po_entry_t *entry = XNEW (po_entry_t); | |
331 | entry->poc_name = poc_name; | |
332 | entry->pop = pop; | |
333 | return entry; | |
334 | } | |
335 | ||
336 | static const pseudo_typeS * | |
337 | po_entry_find (htab_t table, const char *poc_name) | |
338 | { | |
339 | po_entry_t needle = { poc_name, NULL }; | |
340 | po_entry_t *entry = htab_find (table, &needle); | |
341 | return entry != NULL ? entry->pop : NULL; | |
342 | } | |
343 | ||
344 | static struct htab *po_hash; | |
252b5132 | 345 | |
ef99799a | 346 | static const pseudo_typeS potable[] = { |
252b5132 RH |
347 | {"abort", s_abort, 0}, |
348 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 349 | {"altmacro", s_altmacro, 1}, |
38a57ae7 NC |
350 | {"ascii", stringer, 8+0}, |
351 | {"asciz", stringer, 8+1}, | |
252b5132 RH |
352 | {"balign", s_align_bytes, 0}, |
353 | {"balignw", s_align_bytes, -2}, | |
354 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 355 | /* block */ |
fa94de6b RM |
356 | #ifdef HANDLE_BUNDLE |
357 | {"bundle_align_mode", s_bundle_align_mode, 0}, | |
358 | {"bundle_lock", s_bundle_lock, 0}, | |
359 | {"bundle_unlock", s_bundle_unlock, 0}, | |
360 | #endif | |
252b5132 RH |
361 | {"byte", cons, 1}, |
362 | {"comm", s_comm, 0}, | |
363 | {"common", s_mri_common, 0}, | |
364 | {"common.s", s_mri_common, 1}, | |
365 | {"data", s_data, 0}, | |
366 | {"dc", cons, 2}, | |
cc1bc22a AM |
367 | #ifdef TC_ADDRESS_BYTES |
368 | {"dc.a", cons, 0}, | |
369 | #endif | |
252b5132 RH |
370 | {"dc.b", cons, 1}, |
371 | {"dc.d", float_cons, 'd'}, | |
372 | {"dc.l", cons, 4}, | |
373 | {"dc.s", float_cons, 'f'}, | |
374 | {"dc.w", cons, 2}, | |
375 | {"dc.x", float_cons, 'x'}, | |
376 | {"dcb", s_space, 2}, | |
377 | {"dcb.b", s_space, 1}, | |
378 | {"dcb.d", s_float_space, 'd'}, | |
379 | {"dcb.l", s_space, 4}, | |
380 | {"dcb.s", s_float_space, 'f'}, | |
381 | {"dcb.w", s_space, 2}, | |
382 | {"dcb.x", s_float_space, 'x'}, | |
383 | {"ds", s_space, 2}, | |
384 | {"ds.b", s_space, 1}, | |
385 | {"ds.d", s_space, 8}, | |
386 | {"ds.l", s_space, 4}, | |
387 | {"ds.p", s_space, 12}, | |
388 | {"ds.s", s_space, 4}, | |
389 | {"ds.w", s_space, 2}, | |
390 | {"ds.x", s_space, 12}, | |
391 | {"debug", s_ignore, 0}, | |
392 | #ifdef S_SET_DESC | |
393 | {"desc", s_desc, 0}, | |
394 | #endif | |
041ff4dd | 395 | /* dim */ |
252b5132 | 396 | {"double", float_cons, 'd'}, |
041ff4dd NC |
397 | /* dsect */ |
398 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
399 | {"else", s_else, 0}, |
400 | {"elsec", s_else, 0}, | |
3fd9f047 | 401 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
402 | {"end", s_end, 0}, |
403 | {"endc", s_endif, 0}, | |
404 | {"endfunc", s_func, 1}, | |
405 | {"endif", s_endif, 0}, | |
057f53c1 JB |
406 | {"endm", s_bad_end, 0}, |
407 | {"endr", s_bad_end, 1}, | |
041ff4dd | 408 | /* endef */ |
252b5132 RH |
409 | {"equ", s_set, 0}, |
410 | {"equiv", s_set, 1}, | |
9497f5ac | 411 | {"eqv", s_set, -1}, |
252b5132 | 412 | {"err", s_err, 0}, |
d190d046 | 413 | {"error", s_errwarn, 1}, |
252b5132 | 414 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
415 | /* extend */ |
416 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 | 417 | {"appfile", s_app_file, 1}, |
93e914b2 | 418 | {"appline", s_app_line, 1}, |
252b5132 RH |
419 | {"fail", s_fail, 0}, |
420 | {"file", s_app_file, 0}, | |
421 | {"fill", s_fill, 0}, | |
422 | {"float", float_cons, 'f'}, | |
423 | {"format", s_ignore, 0}, | |
424 | {"func", s_func, 0}, | |
425 | {"global", s_globl, 0}, | |
426 | {"globl", s_globl, 0}, | |
427 | {"hword", cons, 2}, | |
428 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 429 | {"ifb", s_ifb, 1}, |
252b5132 RH |
430 | {"ifc", s_ifc, 0}, |
431 | {"ifdef", s_ifdef, 0}, | |
432 | {"ifeq", s_if, (int) O_eq}, | |
433 | {"ifeqs", s_ifeqs, 0}, | |
434 | {"ifge", s_if, (int) O_ge}, | |
435 | {"ifgt", s_if, (int) O_gt}, | |
436 | {"ifle", s_if, (int) O_le}, | |
437 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 438 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
439 | {"ifnc", s_ifc, 1}, |
440 | {"ifndef", s_ifdef, 1}, | |
441 | {"ifne", s_if, (int) O_ne}, | |
442 | {"ifnes", s_ifeqs, 1}, | |
443 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 444 | {"incbin", s_incbin, 0}, |
252b5132 RH |
445 | {"include", s_include, 0}, |
446 | {"int", cons, 4}, | |
447 | {"irp", s_irp, 0}, | |
448 | {"irep", s_irp, 0}, | |
449 | {"irpc", s_irp, 1}, | |
450 | {"irepc", s_irp, 1}, | |
451 | {"lcomm", s_lcomm, 0}, | |
c2069bb2 | 452 | {"lflags", s_ignore, 0}, /* Listing flags. */ |
93e914b2 | 453 | {"linefile", s_app_line, 0}, |
252b5132 | 454 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 455 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
456 | {"llen", listing_psize, 1}, |
457 | {"long", cons, 4}, | |
458 | {"lsym", s_lsym, 0}, | |
459 | {"macro", s_macro, 0}, | |
460 | {"mexit", s_mexit, 0}, | |
461 | {"mri", s_mri, 0}, | |
462 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
463 | {"name", s_ignore, 0}, | |
caa32fe5 | 464 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 465 | {"noformat", s_ignore, 0}, |
041ff4dd | 466 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 | 467 | {"nopage", listing_nopage, 0}, |
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}, | |
041ff4dd | 533 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
534 | }; |
535 | ||
87c245cc BE |
536 | static offsetT |
537 | get_absolute_expr (expressionS *exp) | |
538 | { | |
9497f5ac | 539 | expression_and_evaluate (exp); |
9136aa49 | 540 | |
87c245cc BE |
541 | if (exp->X_op != O_constant) |
542 | { | |
543 | if (exp->X_op != O_absent) | |
544 | as_bad (_("bad or irreducible absolute expression")); | |
545 | exp->X_add_number = 0; | |
546 | } | |
547 | return exp->X_add_number; | |
548 | } | |
549 | ||
550 | offsetT | |
551 | get_absolute_expression (void) | |
552 | { | |
553 | expressionS exp; | |
554 | ||
555 | return get_absolute_expr (&exp); | |
556 | } | |
557 | ||
252b5132 RH |
558 | static int pop_override_ok = 0; |
559 | static const char *pop_table_name; | |
560 | ||
561 | void | |
39e6acbd | 562 | pop_insert (const pseudo_typeS *table) |
252b5132 | 563 | { |
252b5132 RH |
564 | const pseudo_typeS *pop; |
565 | for (pop = table; pop->poc_name; pop++) | |
566 | { | |
fe0e921f AM |
567 | po_entry_t *elt = po_entry_alloc (pop->poc_name, pop); |
568 | if (htab_insert (po_hash, elt, 0) != NULL) | |
569 | { | |
570 | free (elt); | |
571 | if (!pop_override_ok) | |
572 | as_fatal (_("error constructing %s pseudo-op table"), | |
573 | pop_table_name); | |
574 | } | |
252b5132 RH |
575 | } |
576 | } | |
577 | ||
578 | #ifndef md_pop_insert | |
579 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
580 | #endif | |
581 | ||
582 | #ifndef obj_pop_insert | |
583 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
584 | #endif | |
585 | ||
54cfded0 AM |
586 | #ifndef cfi_pop_insert |
587 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
588 | #endif | |
589 | ||
041ff4dd | 590 | static void |
39e6acbd | 591 | pobegin (void) |
252b5132 | 592 | { |
32e4c1c2 ML |
593 | po_hash = htab_create_alloc (16, hash_po_entry, eq_po_entry, NULL, |
594 | xcalloc, xfree); | |
252b5132 | 595 | |
041ff4dd | 596 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
597 | pop_table_name = "md"; |
598 | md_pop_insert (); | |
599 | ||
041ff4dd | 600 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
601 | pop_table_name = "obj"; |
602 | pop_override_ok = 1; | |
603 | obj_pop_insert (); | |
604 | ||
041ff4dd | 605 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
606 | pop_table_name = "standard"; |
607 | pop_insert (potable); | |
d6415f6c | 608 | |
d58a1929 | 609 | /* Now CFI ones. */ |
54cfded0 AM |
610 | pop_table_name = "cfi"; |
611 | pop_override_ok = 1; | |
612 | cfi_pop_insert (); | |
252b5132 RH |
613 | } |
614 | \f | |
e74211b6 | 615 | #define HANDLE_CONDITIONAL_ASSEMBLY(num_read) \ |
252b5132 RH |
616 | if (ignore_input ()) \ |
617 | { \ | |
e74211b6 JB |
618 | char *eol = find_end_of_line (input_line_pointer - (num_read), \ |
619 | flag_m68k_mri); \ | |
40a4d956 JB |
620 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
621 | && eol >= buffer_limit) \ | |
622 | ? buffer_limit \ | |
623 | : eol + 1; \ | |
252b5132 RH |
624 | continue; \ |
625 | } | |
626 | ||
252b5132 RH |
627 | /* This function is used when scrubbing the characters between #APP |
628 | and #NO_APP. */ | |
629 | ||
630 | static char *scrub_string; | |
631 | static char *scrub_string_end; | |
632 | ||
39a45edc AM |
633 | static size_t |
634 | scrub_from_string (char *buf, size_t buflen) | |
252b5132 | 635 | { |
39a45edc | 636 | size_t copy; |
2b47531b ILT |
637 | |
638 | copy = scrub_string_end - scrub_string; | |
639 | if (copy > buflen) | |
640 | copy = buflen; | |
641 | memcpy (buf, scrub_string, copy); | |
642 | scrub_string += copy; | |
643 | return copy; | |
252b5132 RH |
644 | } |
645 | ||
5e75c3ab JB |
646 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
647 | static int | |
648 | try_macro (char term, const char *line) | |
649 | { | |
650 | sb out; | |
651 | const char *err; | |
652 | macro_entry *macro; | |
653 | ||
654 | if (check_macro (line, &out, &err, ¯o)) | |
655 | { | |
656 | if (err != NULL) | |
657 | as_bad ("%s", err); | |
658 | *input_line_pointer++ = term; | |
659 | input_scrub_include_sb (&out, | |
660 | input_line_pointer, 1); | |
661 | sb_kill (&out); | |
662 | buffer_limit = | |
663 | input_scrub_next_buffer (&input_line_pointer); | |
664 | #ifdef md_macro_info | |
665 | md_macro_info (macro); | |
666 | #endif | |
667 | return 1; | |
668 | } | |
669 | return 0; | |
670 | } | |
671 | ||
fa94de6b RM |
672 | #ifdef HANDLE_BUNDLE |
673 | /* Start a new instruction bundle. Returns the rs_align_code frag that | |
674 | will be used to align the new bundle. */ | |
675 | static fragS * | |
676 | start_bundle (void) | |
677 | { | |
678 | fragS *frag = frag_now; | |
679 | ||
680 | frag_align_code (0, 0); | |
681 | ||
682 | while (frag->fr_type != rs_align_code) | |
683 | frag = frag->fr_next; | |
684 | ||
685 | gas_assert (frag != frag_now); | |
686 | ||
687 | return frag; | |
688 | } | |
689 | ||
690 | /* Calculate the maximum size after relaxation of the region starting | |
691 | at the given frag and extending through frag_now (which is unfinished). */ | |
692 | static unsigned int | |
693 | pending_bundle_size (fragS *frag) | |
694 | { | |
695 | unsigned int offset = frag->fr_fix; | |
696 | unsigned int size = 0; | |
697 | ||
698 | gas_assert (frag != frag_now); | |
699 | gas_assert (frag->fr_type == rs_align_code); | |
700 | ||
701 | while (frag != frag_now) | |
702 | { | |
703 | /* This should only happen in what will later become an error case. */ | |
704 | if (frag == NULL) | |
705 | return 0; | |
706 | ||
707 | size += frag->fr_fix; | |
708 | if (frag->fr_type == rs_machine_dependent) | |
709 | size += md_frag_max_var (frag); | |
710 | ||
711 | frag = frag->fr_next; | |
712 | } | |
713 | ||
714 | gas_assert (frag == frag_now); | |
715 | size += frag_now_fix (); | |
716 | if (frag->fr_type == rs_machine_dependent) | |
717 | size += md_frag_max_var (frag); | |
718 | ||
719 | gas_assert (size >= offset); | |
720 | ||
721 | return size - offset; | |
722 | } | |
723 | ||
724 | /* Finish off the frag created to ensure bundle alignment. */ | |
725 | static void | |
726 | finish_bundle (fragS *frag, unsigned int size) | |
727 | { | |
728 | gas_assert (bundle_align_p2 > 0); | |
729 | gas_assert (frag->fr_type == rs_align_code); | |
730 | ||
731 | if (size > 1) | |
732 | { | |
733 | /* If there is more than a single byte, then we need to set up the | |
734 | alignment frag. Otherwise we leave it at its initial state from | |
735 | calling frag_align_code (0, 0), so that it does nothing. */ | |
736 | frag->fr_offset = bundle_align_p2; | |
737 | frag->fr_subtype = size - 1; | |
738 | } | |
739 | ||
740 | /* We do this every time rather than just in s_bundle_align_mode | |
741 | so that we catch any affected section without needing hooks all | |
742 | over for all paths that do section changes. It's cheap enough. */ | |
9136aa49 DG |
743 | if (bundle_align_p2 > OCTETS_PER_BYTE_POWER) |
744 | record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER); | |
fa94de6b RM |
745 | } |
746 | ||
747 | /* Assemble one instruction. This takes care of the bundle features | |
748 | around calling md_assemble. */ | |
749 | static void | |
750 | assemble_one (char *line) | |
751 | { | |
8d3eaee6 | 752 | fragS *insn_start_frag = NULL; |
fa94de6b RM |
753 | |
754 | if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now) | |
755 | { | |
756 | as_bad (_("cannot change section or subsection inside .bundle_lock")); | |
757 | /* Clearing this serves as a marker that we have already complained. */ | |
758 | bundle_lock_frchain = NULL; | |
759 | } | |
760 | ||
761 | if (bundle_lock_frchain == NULL && bundle_align_p2 > 0) | |
762 | insn_start_frag = start_bundle (); | |
763 | ||
764 | md_assemble (line); | |
765 | ||
766 | if (bundle_lock_frchain != NULL) | |
767 | { | |
768 | /* Make sure this hasn't pushed the locked sequence | |
769 | past the bundle size. */ | |
770 | unsigned int bundle_size = pending_bundle_size (bundle_lock_frag); | |
e54e9ac5 AM |
771 | if (bundle_size > 1U << bundle_align_p2) |
772 | as_bad (_ (".bundle_lock sequence at %u bytes, " | |
773 | "but .bundle_align_mode limit is %u bytes"), | |
fa94de6b RM |
774 | bundle_size, 1U << bundle_align_p2); |
775 | } | |
776 | else if (bundle_align_p2 > 0) | |
777 | { | |
778 | unsigned int insn_size = pending_bundle_size (insn_start_frag); | |
779 | ||
e54e9ac5 AM |
780 | if (insn_size > 1U << bundle_align_p2) |
781 | as_bad (_("single instruction is %u bytes long, " | |
782 | "but .bundle_align_mode limit is %u bytes"), | |
783 | insn_size, 1U << bundle_align_p2); | |
fa94de6b RM |
784 | |
785 | finish_bundle (insn_start_frag, insn_size); | |
786 | } | |
787 | } | |
788 | ||
789 | #else /* !HANDLE_BUNDLE */ | |
790 | ||
791 | # define assemble_one(line) md_assemble(line) | |
792 | ||
793 | #endif /* HANDLE_BUNDLE */ | |
794 | ||
9136aa49 DG |
795 | static bfd_boolean |
796 | in_bss (void) | |
797 | { | |
fd361982 | 798 | flagword flags = bfd_section_flags (now_seg); |
9136aa49 DG |
799 | |
800 | return (flags & SEC_ALLOC) && !(flags & (SEC_LOAD | SEC_HAS_CONTENTS)); | |
801 | } | |
802 | ||
803 | /* Guts of .align directive: | |
804 | N is the power of two to which to align. A value of zero is accepted but | |
805 | ignored: the default alignment of the section will be at least this. | |
806 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
807 | LEN is the length of whatever FILL points to, if anything. If LEN is zero | |
808 | but FILL is not NULL then LEN is treated as if it were one. | |
809 | MAX is the maximum number of characters to skip when doing the alignment, | |
810 | or 0 if there is no maximum. */ | |
811 | ||
f86f5863 | 812 | void |
9136aa49 DG |
813 | do_align (unsigned int n, char *fill, unsigned int len, unsigned int max) |
814 | { | |
815 | if (now_seg == absolute_section || in_bss ()) | |
816 | { | |
817 | if (fill != NULL) | |
818 | while (len-- > 0) | |
819 | if (*fill++ != '\0') | |
820 | { | |
821 | if (now_seg == absolute_section) | |
822 | as_warn (_("ignoring fill value in absolute section")); | |
823 | else | |
824 | as_warn (_("ignoring fill value in section `%s'"), | |
825 | segment_name (now_seg)); | |
826 | break; | |
827 | } | |
828 | fill = NULL; | |
829 | len = 0; | |
830 | } | |
831 | ||
832 | #ifdef md_flush_pending_output | |
833 | md_flush_pending_output (); | |
834 | #endif | |
835 | ||
836 | #ifdef md_do_align | |
837 | md_do_align (n, fill, len, max, just_record_alignment); | |
838 | #endif | |
839 | ||
840 | /* Only make a frag if we HAVE to... */ | |
841 | if ((n > OCTETS_PER_BYTE_POWER) && !need_pass_2) | |
842 | { | |
843 | if (fill == NULL) | |
844 | { | |
845 | if (subseg_text_p (now_seg)) | |
846 | frag_align_code (n, max); | |
847 | else | |
848 | frag_align (n, 0, max); | |
849 | } | |
850 | else if (len <= 1) | |
851 | frag_align (n, *fill, max); | |
852 | else | |
853 | frag_align_pattern (n, fill, len, max); | |
854 | } | |
855 | ||
856 | #ifdef md_do_align | |
857 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL | |
858 | #endif | |
859 | ||
860 | if (n > OCTETS_PER_BYTE_POWER) | |
861 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); | |
862 | } | |
863 | ||
041ff4dd NC |
864 | /* We read the file, putting things into a web that represents what we |
865 | have been reading. */ | |
866 | void | |
e0471c16 | 867 | read_a_source_file (const char *name) |
252b5132 | 868 | { |
d02603dc NC |
869 | char nul_char; |
870 | char next_char; | |
91d6fa6a | 871 | char *s; /* String of symbol, '\0' appended. */ |
d27aad4e | 872 | long temp; |
32e4c1c2 | 873 | const pseudo_typeS *pop; |
252b5132 | 874 | |
4c400d5e AM |
875 | #ifdef WARN_COMMENTS |
876 | found_comment = 0; | |
877 | #endif | |
878 | ||
252b5132 RH |
879 | buffer = input_scrub_new_file (name); |
880 | ||
881 | listing_file (name); | |
882 | listing_newline (NULL); | |
883 | register_dependency (name); | |
884 | ||
885 | /* Generate debugging information before we've read anything in to denote | |
886 | this file as the "main" source file and not a subordinate one | |
887 | (e.g. N_SO vs N_SOL in stabs). */ | |
888 | generate_file_debug (); | |
889 | ||
890 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 891 | { /* We have another line to parse. */ |
5e75c3ab JB |
892 | #ifndef NO_LISTING |
893 | /* In order to avoid listing macro expansion lines with labels | |
894 | multiple times, keep track of which line was last issued. */ | |
895 | static char *last_eol; | |
896 | ||
897 | last_eol = NULL; | |
898 | #endif | |
252b5132 RH |
899 | while (input_line_pointer < buffer_limit) |
900 | { | |
f19df8f7 | 901 | bfd_boolean was_new_line; |
041ff4dd | 902 | /* We have more of this buffer to parse. */ |
252b5132 | 903 | |
041ff4dd NC |
904 | /* We now have input_line_pointer->1st char of next line. |
905 | If input_line_pointer [-1] == '\n' then we just | |
906 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
907 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
908 | if (was_new_line) | |
252b5132 | 909 | { |
4a826962 | 910 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
911 | #ifdef md_start_line_hook |
912 | md_start_line_hook (); | |
913 | #endif | |
252b5132 RH |
914 | if (input_line_pointer[-1] == '\n') |
915 | bump_line_counters (); | |
f19df8f7 | 916 | } |
252b5132 | 917 | |
f19df8f7 AM |
918 | #ifndef NO_LISTING |
919 | /* If listing is on, and we are expanding a macro, then give | |
920 | the listing code the contents of the expanded line. */ | |
921 | if (listing) | |
922 | { | |
923 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
924 | { | |
925 | /* Find the end of the current expanded macro line. */ | |
926 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
927 | ||
928 | if (s != last_eol) | |
929 | { | |
930 | char *copy; | |
931 | int len; | |
932 | ||
933 | last_eol = s; | |
934 | /* Copy it for safe keeping. Also give an indication of | |
935 | how much macro nesting is involved at this point. */ | |
936 | len = s - input_line_pointer; | |
8860a416 | 937 | copy = XNEWVEC (char, len + macro_nest + 2); |
f19df8f7 AM |
938 | memset (copy, '>', macro_nest); |
939 | copy[macro_nest] = ' '; | |
940 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
941 | copy[macro_nest + 1 + len] = '\0'; | |
942 | ||
943 | /* Install the line with the listing facility. */ | |
944 | listing_newline (copy); | |
945 | } | |
946 | } | |
947 | else | |
948 | listing_newline (NULL); | |
949 | } | |
950 | #endif | |
951 | if (was_new_line) | |
952 | { | |
252b5132 RH |
953 | line_label = NULL; |
954 | ||
abd63a32 | 955 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 | 956 | { |
d02603dc | 957 | next_char = * input_line_pointer; |
252b5132 RH |
958 | /* Text at the start of a line must be a label, we |
959 | run down and stick a colon in. */ | |
d02603dc | 960 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 961 | { |
d02603dc | 962 | char *line_start; |
252b5132 RH |
963 | int mri_line_macro; |
964 | ||
e74211b6 | 965 | HANDLE_CONDITIONAL_ASSEMBLY (0); |
252b5132 | 966 | |
d02603dc NC |
967 | nul_char = get_symbol_name (& line_start); |
968 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
252b5132 RH |
969 | |
970 | /* In MRI mode, the EQU and MACRO pseudoops must | |
971 | be handled specially. */ | |
972 | mri_line_macro = 0; | |
973 | if (flag_m68k_mri) | |
974 | { | |
975 | char *rest = input_line_pointer + 1; | |
976 | ||
977 | if (*rest == ':') | |
978 | ++rest; | |
979 | if (*rest == ' ' || *rest == '\t') | |
980 | ++rest; | |
981 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
982 | || strncasecmp (rest, "SET", 3) == 0) | |
983 | && (rest[3] == ' ' || rest[3] == '\t')) | |
984 | { | |
985 | input_line_pointer = rest + 3; | |
986 | equals (line_start, | |
987 | strncasecmp (rest, "SET", 3) == 0); | |
988 | continue; | |
989 | } | |
990 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
991 | && (rest[5] == ' ' | |
992 | || rest[5] == '\t' | |
993 | || is_end_of_line[(unsigned char) rest[5]])) | |
994 | mri_line_macro = 1; | |
995 | } | |
996 | ||
997 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
998 | pseudo-op specially: we don't want to put the |
999 | symbol in the symbol table. */ | |
041ff4dd | 1000 | if (!mri_line_macro |
a25c045a | 1001 | #ifdef TC_START_LABEL_WITHOUT_COLON |
2e57ce7b | 1002 | && TC_START_LABEL_WITHOUT_COLON (nul_char, next_char) |
a25c045a | 1003 | #endif |
ef99799a | 1004 | ) |
252b5132 RH |
1005 | line_label = colon (line_start); |
1006 | else | |
1007 | line_label = symbol_create (line_start, | |
1008 | absolute_section, | |
e01e1cee | 1009 | &zero_address_frag, 0); |
252b5132 | 1010 | |
d02603dc NC |
1011 | next_char = restore_line_pointer (nul_char); |
1012 | if (next_char == ':') | |
252b5132 RH |
1013 | input_line_pointer++; |
1014 | } | |
1015 | } | |
1016 | } | |
1017 | ||
47eebc20 | 1018 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
1019 | We expect a well-formed assembler statement. |
1020 | A "symbol-name:" is a statement. | |
f0e652b4 | 1021 | |
041ff4dd NC |
1022 | Depending on what compiler is used, the order of these tests |
1023 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
1024 | Each test is independent of all other tests at the (top) |
1025 | level. */ | |
1026 | do | |
d02603dc NC |
1027 | nul_char = next_char = *input_line_pointer++; |
1028 | while (next_char == '\t' || next_char == ' ' || next_char == '\f'); | |
252b5132 | 1029 | |
041ff4dd NC |
1030 | /* C is the 1st significant character. |
1031 | Input_line_pointer points after that character. */ | |
d02603dc | 1032 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 1033 | { |
d02603dc NC |
1034 | char *rest; |
1035 | ||
041ff4dd | 1036 | /* Want user-defined label or pseudo/opcode. */ |
e74211b6 | 1037 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1038 | |
d02603dc NC |
1039 | --input_line_pointer; |
1040 | nul_char = get_symbol_name (& s); /* name's delimiter. */ | |
1041 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
1042 | rest = input_line_pointer + (nul_char == '"' ? 2 : 1); | |
041ff4dd | 1043 | |
d02603dc NC |
1044 | /* NEXT_CHAR is character after symbol. |
1045 | The end of symbol in the input line is now '\0'. | |
d6415f6c AM |
1046 | S points to the beginning of the symbol. |
1047 | [In case of pseudo-op, s->'.'.] | |
d02603dc | 1048 | Input_line_pointer->'\0' where NUL_CHAR was. */ |
2e57ce7b | 1049 | if (TC_START_LABEL (s, nul_char, next_char)) |
252b5132 RH |
1050 | { |
1051 | if (flag_m68k_mri) | |
1052 | { | |
252b5132 | 1053 | /* In MRI mode, \tsym: set 0 is permitted. */ |
252b5132 RH |
1054 | if (*rest == ':') |
1055 | ++rest; | |
f0e652b4 | 1056 | |
252b5132 RH |
1057 | if (*rest == ' ' || *rest == '\t') |
1058 | ++rest; | |
f0e652b4 | 1059 | |
252b5132 RH |
1060 | if ((strncasecmp (rest, "EQU", 3) == 0 |
1061 | || strncasecmp (rest, "SET", 3) == 0) | |
1062 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1063 | { | |
1064 | input_line_pointer = rest + 3; | |
1065 | equals (s, 1); | |
1066 | continue; | |
1067 | } | |
1068 | } | |
1069 | ||
041ff4dd | 1070 | line_label = colon (s); /* User-defined label. */ |
d02603dc NC |
1071 | restore_line_pointer (nul_char); |
1072 | ++ input_line_pointer; | |
a645d1eb L |
1073 | #ifdef tc_check_label |
1074 | tc_check_label (line_label); | |
1075 | #endif | |
041ff4dd | 1076 | /* Input_line_pointer->after ':'. */ |
252b5132 | 1077 | SKIP_WHITESPACE (); |
252b5132 | 1078 | } |
d02603dc NC |
1079 | else if ((next_char == '=' && *rest == '=') |
1080 | || ((next_char == ' ' || next_char == '\t') | |
1081 | && rest[0] == '=' | |
1082 | && rest[1] == '=')) | |
9497f5ac NC |
1083 | { |
1084 | equals (s, -1); | |
1085 | demand_empty_rest_of_line (); | |
1086 | } | |
d02603dc NC |
1087 | else if ((next_char == '=' |
1088 | || ((next_char == ' ' || next_char == '\t') | |
1089 | && *rest == '=')) | |
ee3c9814 | 1090 | #ifdef TC_EQUAL_IN_INSN |
d02603dc | 1091 | && !TC_EQUAL_IN_INSN (next_char, s) |
ee3c9814 | 1092 | #endif |
fa94de6b | 1093 | ) |
252b5132 RH |
1094 | { |
1095 | equals (s, 1); | |
1096 | demand_empty_rest_of_line (); | |
1097 | } | |
1098 | else | |
041ff4dd NC |
1099 | { |
1100 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
1101 | pop = NULL; |
1102 | ||
a8a3b3b2 | 1103 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
1104 | { |
1105 | char *s2 = s; | |
37d8bb27 | 1106 | |
42135cad AM |
1107 | strncpy (original_case_string, s2, |
1108 | sizeof (original_case_string) - 1); | |
37d8bb27 | 1109 | original_case_string[sizeof (original_case_string) - 1] = 0; |
ef99799a | 1110 | |
252b5132 RH |
1111 | while (*s2) |
1112 | { | |
3882b010 | 1113 | *s2 = TOLOWER (*s2); |
252b5132 RH |
1114 | s2++; |
1115 | } | |
1116 | } | |
1117 | #endif | |
abd63a32 | 1118 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 1119 | { |
7be1c489 AM |
1120 | /* The MRI assembler uses pseudo-ops without |
1121 | a period. */ | |
32e4c1c2 | 1122 | pop = po_entry_find (po_hash, s); |
252b5132 RH |
1123 | if (pop != NULL && pop->poc_handler == NULL) |
1124 | pop = NULL; | |
1125 | } | |
1126 | ||
1127 | if (pop != NULL | |
041ff4dd | 1128 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 1129 | { |
041ff4dd | 1130 | /* PSEUDO - OP. |
f0e652b4 | 1131 | |
d02603dc | 1132 | WARNING: next_char may be end-of-line. |
d6415f6c AM |
1133 | We lookup the pseudo-op table with s+1 because we |
1134 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
1135 | |
1136 | if (pop == NULL) | |
32e4c1c2 | 1137 | pop = po_entry_find (po_hash, s + 1); |
e4475e39 NS |
1138 | if (pop && !pop->poc_handler) |
1139 | pop = NULL; | |
252b5132 RH |
1140 | |
1141 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
1142 | automatic alignment directive. What a hack |
1143 | this is. */ | |
252b5132 RH |
1144 | if (mri_pending_align |
1145 | && (pop == NULL | |
041ff4dd NC |
1146 | || !((pop->poc_handler == cons |
1147 | && pop->poc_val == 1) | |
1148 | || (pop->poc_handler == s_space | |
1149 | && pop->poc_val == 1) | |
252b5132 | 1150 | #ifdef tc_conditional_pseudoop |
041ff4dd | 1151 | || tc_conditional_pseudoop (pop) |
252b5132 | 1152 | #endif |
041ff4dd NC |
1153 | || pop->poc_handler == s_if |
1154 | || pop->poc_handler == s_ifdef | |
1155 | || pop->poc_handler == s_ifc | |
1156 | || pop->poc_handler == s_ifeqs | |
1157 | || pop->poc_handler == s_else | |
1158 | || pop->poc_handler == s_endif | |
1159 | || pop->poc_handler == s_globl | |
1160 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
1161 | { |
1162 | do_align (1, (char *) NULL, 0, 0); | |
1163 | mri_pending_align = 0; | |
f0e652b4 | 1164 | |
252b5132 RH |
1165 | if (line_label != NULL) |
1166 | { | |
2b47531b | 1167 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1168 | S_SET_VALUE (line_label, frag_now_fix ()); |
1169 | } | |
1170 | } | |
1171 | ||
041ff4dd | 1172 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
1173 | if (pop == NULL) |
1174 | { | |
5e75c3ab JB |
1175 | char *end = input_line_pointer; |
1176 | ||
d02603dc | 1177 | (void) restore_line_pointer (nul_char); |
252b5132 | 1178 | s_ignore (0); |
d02603dc | 1179 | nul_char = next_char = *--input_line_pointer; |
5e75c3ab | 1180 | *input_line_pointer = '\0'; |
d02603dc | 1181 | if (! macro_defined || ! try_macro (next_char, s)) |
5e75c3ab JB |
1182 | { |
1183 | *end = '\0'; | |
1184 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
d02603dc | 1185 | *input_line_pointer++ = nul_char; |
5e75c3ab | 1186 | } |
252b5132 RH |
1187 | continue; |
1188 | } | |
1189 | ||
041ff4dd | 1190 | /* Put it back for error messages etc. */ |
d02603dc | 1191 | next_char = restore_line_pointer (nul_char); |
252b5132 RH |
1192 | /* The following skip of whitespace is compulsory. |
1193 | A well shaped space is sometimes all that separates | |
041ff4dd | 1194 | keyword from operands. */ |
d02603dc | 1195 | if (next_char == ' ' || next_char == '\t') |
252b5132 | 1196 | input_line_pointer++; |
041ff4dd NC |
1197 | |
1198 | /* Input_line is restored. | |
d6415f6c AM |
1199 | Input_line_pointer->1st non-blank char |
1200 | after pseudo-operation. */ | |
252b5132 RH |
1201 | (*pop->poc_handler) (pop->poc_val); |
1202 | ||
1203 | /* If that was .end, just get out now. */ | |
1204 | if (pop->poc_handler == s_end) | |
1205 | goto quit; | |
1206 | } | |
1207 | else | |
1208 | { | |
d02603dc NC |
1209 | /* WARNING: next_char may be end-of-line. */ |
1210 | /* Also: input_line_pointer->`\0` where nul_char was. */ | |
1211 | (void) restore_line_pointer (nul_char); | |
7592cfd7 | 1212 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
d02603dc | 1213 | next_char = nul_char = *input_line_pointer; |
252b5132 RH |
1214 | *input_line_pointer = '\0'; |
1215 | ||
1216 | generate_lineno_debug (); | |
1217 | ||
d02603dc | 1218 | if (macro_defined && try_macro (next_char, s)) |
5e75c3ab | 1219 | continue; |
252b5132 RH |
1220 | |
1221 | if (mri_pending_align) | |
1222 | { | |
1223 | do_align (1, (char *) NULL, 0, 0); | |
1224 | mri_pending_align = 0; | |
1225 | if (line_label != NULL) | |
1226 | { | |
2b47531b | 1227 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1228 | S_SET_VALUE (line_label, frag_now_fix ()); |
1229 | } | |
1230 | } | |
1231 | ||
fa94de6b | 1232 | assemble_one (s); /* Assemble 1 instruction. */ |
252b5132 | 1233 | |
3be64886 NC |
1234 | /* PR 19630: The backend may have set ilp to NULL |
1235 | if it encountered a catastrophic failure. */ | |
1236 | if (input_line_pointer == NULL) | |
1237 | as_fatal (_("unable to continue with assembly.")); | |
1238 | ||
d02603dc | 1239 | *input_line_pointer++ = nul_char; |
252b5132 RH |
1240 | |
1241 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
1242 | this instruction. */ |
1243 | } | |
1244 | } | |
252b5132 | 1245 | continue; |
041ff4dd | 1246 | } |
252b5132 RH |
1247 | |
1248 | /* Empty statement? */ | |
d02603dc | 1249 | if (is_end_of_line[(unsigned char) next_char]) |
252b5132 RH |
1250 | continue; |
1251 | ||
d02603dc | 1252 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (next_char)) |
252b5132 | 1253 | { |
041ff4dd | 1254 | /* local label ("4:") */ |
252b5132 RH |
1255 | char *backup = input_line_pointer; |
1256 | ||
e74211b6 | 1257 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1258 | |
d02603dc NC |
1259 | temp = next_char - '0'; |
1260 | ||
1261 | if (nul_char == '"') | |
1262 | ++ input_line_pointer; | |
252b5132 | 1263 | |
041ff4dd | 1264 | /* Read the whole number. */ |
3882b010 | 1265 | while (ISDIGIT (*input_line_pointer)) |
252b5132 | 1266 | { |
d27aad4e AC |
1267 | const long digit = *input_line_pointer - '0'; |
1268 | if (temp > (LONG_MAX - digit) / 10) | |
1269 | { | |
1270 | as_bad (_("local label too large near %s"), backup); | |
1271 | temp = -1; | |
1272 | break; | |
1273 | } | |
1274 | temp = temp * 10 + digit; | |
252b5132 | 1275 | ++input_line_pointer; |
041ff4dd | 1276 | } |
252b5132 | 1277 | |
d27aad4e AC |
1278 | /* Overflow: stop processing the label. */ |
1279 | if (temp == -1) | |
7bb178ec L |
1280 | { |
1281 | ignore_rest_of_line (); | |
1282 | continue; | |
1283 | } | |
d27aad4e | 1284 | |
252b5132 RH |
1285 | if (LOCAL_LABELS_DOLLAR |
1286 | && *input_line_pointer == '$' | |
1287 | && *(input_line_pointer + 1) == ':') | |
1288 | { | |
1289 | input_line_pointer += 2; | |
1290 | ||
1291 | if (dollar_label_defined (temp)) | |
1292 | { | |
d27aad4e | 1293 | as_fatal (_("label \"%ld$\" redefined"), temp); |
252b5132 RH |
1294 | } |
1295 | ||
1296 | define_dollar_label (temp); | |
1297 | colon (dollar_label_name (temp, 0)); | |
1298 | continue; | |
1299 | } | |
1300 | ||
1301 | if (LOCAL_LABELS_FB | |
1302 | && *input_line_pointer++ == ':') | |
1303 | { | |
1304 | fb_label_instance_inc (temp); | |
1305 | colon (fb_label_name (temp, 0)); | |
1306 | continue; | |
1307 | } | |
1308 | ||
1309 | input_line_pointer = backup; | |
d02603dc | 1310 | } |
252b5132 | 1311 | |
d02603dc | 1312 | if (next_char && strchr (line_comment_chars, next_char)) |
041ff4dd | 1313 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1314 | sb sbuf; |
252b5132 RH |
1315 | char *ends; |
1316 | char *new_buf; | |
1317 | char *new_tmp; | |
1318 | unsigned int new_length; | |
1319 | char *tmp_buf = 0; | |
1320 | ||
252b5132 RH |
1321 | s = input_line_pointer; |
1322 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1323 | { |
1324 | /* We ignore it. */ | |
1325 | ignore_rest_of_line (); | |
1326 | continue; | |
1327 | } | |
1328 | bump_line_counters (); | |
252b5132 RH |
1329 | s += 4; |
1330 | ||
1331 | ends = strstr (s, "#NO_APP\n"); | |
1332 | ||
1333 | if (!ends) | |
1334 | { | |
1335 | unsigned int tmp_len; | |
1336 | unsigned int num; | |
1337 | ||
1338 | /* The end of the #APP wasn't in this buffer. We | |
1339 | keep reading in buffers until we find the #NO_APP | |
1340 | that goes with this #APP There is one. The specs | |
47eebc20 | 1341 | guarantee it... */ |
252b5132 | 1342 | tmp_len = buffer_limit - s; |
8860a416 | 1343 | tmp_buf = XNEWVEC (char, tmp_len + 1); |
252b5132 RH |
1344 | memcpy (tmp_buf, s, tmp_len); |
1345 | do | |
1346 | { | |
1347 | new_tmp = input_scrub_next_buffer (&buffer); | |
1348 | if (!new_tmp) | |
1349 | break; | |
1350 | else | |
1351 | buffer_limit = new_tmp; | |
1352 | input_line_pointer = buffer; | |
1353 | ends = strstr (buffer, "#NO_APP\n"); | |
1354 | if (ends) | |
1355 | num = ends - buffer; | |
1356 | else | |
1357 | num = buffer_limit - buffer; | |
1358 | ||
8860a416 | 1359 | tmp_buf = XRESIZEVEC (char, tmp_buf, tmp_len + num); |
252b5132 RH |
1360 | memcpy (tmp_buf + tmp_len, buffer, num); |
1361 | tmp_len += num; | |
1362 | } | |
1363 | while (!ends); | |
1364 | ||
1365 | input_line_pointer = ends ? ends + 8 : NULL; | |
1366 | ||
1367 | s = tmp_buf; | |
1368 | ends = s + tmp_len; | |
1369 | ||
1370 | } | |
1371 | else | |
1372 | { | |
1373 | input_line_pointer = ends + 8; | |
1374 | } | |
1375 | ||
1376 | scrub_string = s; | |
1377 | scrub_string_end = ends; | |
1378 | ||
1379 | new_length = ends - s; | |
8860a416 | 1380 | new_buf = XNEWVEC (char, new_length); |
252b5132 RH |
1381 | new_tmp = new_buf; |
1382 | for (;;) | |
1383 | { | |
39a45edc AM |
1384 | size_t space; |
1385 | size_t size; | |
252b5132 RH |
1386 | |
1387 | space = (new_buf + new_length) - new_tmp; | |
1388 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1389 | ||
1390 | if (size < space) | |
1391 | { | |
64e55042 | 1392 | new_tmp[size] = 0; |
252b5132 RH |
1393 | break; |
1394 | } | |
1395 | ||
8860a416 | 1396 | new_buf = XRESIZEVEC (char, new_buf, new_length + 100); |
252b5132 RH |
1397 | new_tmp = new_buf + new_length; |
1398 | new_length += 100; | |
1399 | } | |
1400 | ||
9fbb53c7 | 1401 | free (tmp_buf); |
f0e652b4 | 1402 | |
64e55042 HPN |
1403 | /* We've "scrubbed" input to the preferred format. In the |
1404 | process we may have consumed the whole of the remaining | |
1405 | file (and included files). We handle this formatted | |
1406 | input similar to that of macro expansion, letting | |
1407 | actual macro expansion (possibly nested) and other | |
1408 | input expansion work. Beware that in messages, line | |
1409 | numbers and possibly file names will be incorrect. */ | |
d2ae702c L |
1410 | new_length = strlen (new_buf); |
1411 | sb_build (&sbuf, new_length); | |
1412 | sb_add_buffer (&sbuf, new_buf, new_length); | |
64e55042 HPN |
1413 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); |
1414 | sb_kill (&sbuf); | |
1415 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1416 | free (new_buf); | |
252b5132 RH |
1417 | continue; |
1418 | } | |
1419 | ||
e74211b6 | 1420 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 RH |
1421 | |
1422 | #ifdef tc_unrecognized_line | |
d02603dc | 1423 | if (tc_unrecognized_line (next_char)) |
252b5132 RH |
1424 | continue; |
1425 | #endif | |
0e389e77 | 1426 | input_line_pointer--; |
601e61cd | 1427 | /* Report unknown char as error. */ |
c95b35a9 | 1428 | demand_empty_rest_of_line (); |
041ff4dd | 1429 | } |
041ff4dd | 1430 | } |
252b5132 RH |
1431 | |
1432 | quit: | |
04648e65 | 1433 | symbol_set_value_now (&dot_symbol); |
252b5132 | 1434 | |
fa94de6b RM |
1435 | #ifdef HANDLE_BUNDLE |
1436 | if (bundle_lock_frag != NULL) | |
1437 | { | |
1438 | as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line, | |
1439 | _(".bundle_lock with no matching .bundle_unlock")); | |
1440 | bundle_lock_frag = NULL; | |
1441 | bundle_lock_frchain = NULL; | |
d416e51d | 1442 | bundle_lock_depth = 0; |
fa94de6b RM |
1443 | } |
1444 | #endif | |
1445 | ||
252b5132 | 1446 | #ifdef md_cleanup |
041ff4dd | 1447 | md_cleanup (); |
252b5132 | 1448 | #endif |
041ff4dd NC |
1449 | /* Close the input file. */ |
1450 | input_scrub_close (); | |
4c400d5e AM |
1451 | #ifdef WARN_COMMENTS |
1452 | { | |
1453 | if (warn_comment && found_comment) | |
1454 | as_warn_where (found_comment_file, found_comment, | |
1455 | "first comment found here"); | |
1456 | } | |
1457 | #endif | |
252b5132 RH |
1458 | } |
1459 | ||
e5604d79 | 1460 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
956a6ba3 | 1461 | Take the sign of the number from SIGN rather than X_add_number. */ |
e5604d79 RS |
1462 | |
1463 | static void | |
956a6ba3 | 1464 | convert_to_bignum (expressionS *exp, int sign) |
e5604d79 RS |
1465 | { |
1466 | valueT value; | |
1467 | unsigned int i; | |
1468 | ||
1469 | value = exp->X_add_number; | |
1470 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1471 | { | |
1472 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1473 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1474 | } | |
1475 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1476 | the sign of the original value. */ | |
956a6ba3 JB |
1477 | if ((exp->X_add_number < 0) == !sign) |
1478 | generic_bignum[i++] = sign ? LITTLENUM_MASK : 0; | |
e5604d79 RS |
1479 | exp->X_op = O_big; |
1480 | exp->X_add_number = i; | |
1481 | } | |
1482 | ||
252b5132 RH |
1483 | /* For most MRI pseudo-ops, the line actually ends at the first |
1484 | nonquoted space. This function looks for that point, stuffs a null | |
1485 | in, and sets *STOPCP to the character that used to be there, and | |
1486 | returns the location. | |
1487 | ||
1488 | Until I hear otherwise, I am going to assume that this is only true | |
1489 | for the m68k MRI assembler. */ | |
1490 | ||
1491 | char * | |
39e6acbd | 1492 | mri_comment_field (char *stopcp) |
252b5132 | 1493 | { |
252b5132 | 1494 | char *s; |
041ff4dd | 1495 | #ifdef TC_M68K |
252b5132 RH |
1496 | int inquote = 0; |
1497 | ||
1498 | know (flag_m68k_mri); | |
1499 | ||
1500 | for (s = input_line_pointer; | |
041ff4dd | 1501 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1502 | || inquote); |
1503 | s++) | |
1504 | { | |
1505 | if (*s == '\'') | |
041ff4dd | 1506 | inquote = !inquote; |
252b5132 | 1507 | } |
252b5132 | 1508 | #else |
041ff4dd NC |
1509 | for (s = input_line_pointer; |
1510 | !is_end_of_line[(unsigned char) *s]; | |
1511 | s++) | |
252b5132 | 1512 | ; |
041ff4dd | 1513 | #endif |
252b5132 RH |
1514 | *stopcp = *s; |
1515 | *s = '\0'; | |
f0e652b4 | 1516 | |
252b5132 | 1517 | return s; |
252b5132 RH |
1518 | } |
1519 | ||
1520 | /* Skip to the end of an MRI comment field. */ | |
1521 | ||
1522 | void | |
39e6acbd | 1523 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1524 | { |
1525 | know (flag_mri); | |
1526 | ||
1527 | input_line_pointer = stop; | |
1528 | *stop = stopc; | |
041ff4dd | 1529 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1530 | ++input_line_pointer; |
1531 | } | |
1532 | ||
041ff4dd | 1533 | void |
39e6acbd | 1534 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1535 | { |
1536 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1537 | } | |
1538 | ||
252b5132 RH |
1539 | /* Handle the .align pseudo-op. A positive ARG is a default alignment |
1540 | (in bytes). A negative ARG is the negative of the length of the | |
1541 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1542 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1543 | #ifndef TC_ALIGN_LIMIT |
1544 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1545 | #endif | |
9ebd302d | 1546 | |
252b5132 | 1547 | static void |
9136aa49 | 1548 | s_align (signed int arg, int bytes_p) |
252b5132 | 1549 | { |
11ec4ba9 | 1550 | unsigned int align_limit = TC_ALIGN_LIMIT; |
9ebd302d | 1551 | unsigned int align; |
252b5132 | 1552 | char *stop = NULL; |
fb25138b | 1553 | char stopc = 0; |
252b5132 | 1554 | offsetT fill = 0; |
9136aa49 | 1555 | unsigned int max; |
252b5132 RH |
1556 | int fill_p; |
1557 | ||
1558 | if (flag_mri) | |
1559 | stop = mri_comment_field (&stopc); | |
1560 | ||
1561 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1562 | { | |
1563 | if (arg < 0) | |
1564 | align = 0; | |
1565 | else | |
041ff4dd | 1566 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1567 | } |
1568 | else | |
1569 | { | |
1570 | align = get_absolute_expression (); | |
1571 | SKIP_WHITESPACE (); | |
db2ed2e0 AM |
1572 | |
1573 | #ifdef TC_ALIGN_ZERO_IS_DEFAULT | |
1574 | if (arg > 0 && align == 0) | |
1575 | align = arg; | |
1576 | #endif | |
252b5132 RH |
1577 | } |
1578 | ||
1579 | if (bytes_p) | |
1580 | { | |
1581 | /* Convert to a power of 2. */ | |
1582 | if (align != 0) | |
1583 | { | |
1584 | unsigned int i; | |
1585 | ||
1586 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1587 | ; | |
1588 | if (align != 1) | |
0e389e77 | 1589 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1590 | |
252b5132 RH |
1591 | align = i; |
1592 | } | |
1593 | } | |
1594 | ||
b617dc20 | 1595 | if (align > align_limit) |
252b5132 | 1596 | { |
b617dc20 | 1597 | align = align_limit; |
0e389e77 | 1598 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1599 | } |
1600 | ||
1601 | if (*input_line_pointer != ',') | |
1602 | { | |
1603 | fill_p = 0; | |
1604 | max = 0; | |
1605 | } | |
1606 | else | |
1607 | { | |
1608 | ++input_line_pointer; | |
1609 | if (*input_line_pointer == ',') | |
1610 | fill_p = 0; | |
1611 | else | |
1612 | { | |
1613 | fill = get_absolute_expression (); | |
1614 | SKIP_WHITESPACE (); | |
1615 | fill_p = 1; | |
1616 | } | |
1617 | ||
1618 | if (*input_line_pointer != ',') | |
1619 | max = 0; | |
1620 | else | |
1621 | { | |
1622 | ++input_line_pointer; | |
1623 | max = get_absolute_expression (); | |
1624 | } | |
1625 | } | |
1626 | ||
041ff4dd | 1627 | if (!fill_p) |
252b5132 RH |
1628 | { |
1629 | if (arg < 0) | |
1630 | as_warn (_("expected fill pattern missing")); | |
1631 | do_align (align, (char *) NULL, 0, max); | |
1632 | } | |
1633 | else | |
1634 | { | |
9136aa49 | 1635 | unsigned int fill_len; |
252b5132 RH |
1636 | |
1637 | if (arg >= 0) | |
1638 | fill_len = 1; | |
1639 | else | |
041ff4dd | 1640 | fill_len = -arg; |
9136aa49 | 1641 | |
252b5132 RH |
1642 | if (fill_len <= 1) |
1643 | { | |
9136aa49 | 1644 | char fill_char = 0; |
252b5132 RH |
1645 | |
1646 | fill_char = fill; | |
1647 | do_align (align, &fill_char, fill_len, max); | |
1648 | } | |
1649 | else | |
1650 | { | |
1651 | char ab[16]; | |
1652 | ||
1653 | if ((size_t) fill_len > sizeof ab) | |
9136aa49 DG |
1654 | { |
1655 | as_warn (_("fill pattern too long, truncating to %u"), | |
1656 | (unsigned) sizeof ab); | |
1657 | fill_len = sizeof ab; | |
1658 | } | |
1659 | ||
252b5132 RH |
1660 | md_number_to_chars (ab, fill, fill_len); |
1661 | do_align (align, ab, fill_len, max); | |
1662 | } | |
1663 | } | |
1664 | ||
1665 | demand_empty_rest_of_line (); | |
1666 | ||
1667 | if (flag_mri) | |
1668 | mri_comment_end (stop, stopc); | |
1669 | } | |
1670 | ||
1671 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1672 | align to a 4 byte boundary. */ | |
1673 | ||
041ff4dd | 1674 | void |
39e6acbd | 1675 | s_align_bytes (int arg) |
252b5132 RH |
1676 | { |
1677 | s_align (arg, 1); | |
1678 | } | |
1679 | ||
1680 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1681 | to a 2**4 boundary. */ | |
1682 | ||
041ff4dd | 1683 | void |
39e6acbd | 1684 | s_align_ptwo (int arg) |
252b5132 RH |
1685 | { |
1686 | s_align (arg, 0); | |
1687 | } | |
1688 | ||
caa32fe5 NC |
1689 | /* Switch in and out of alternate macro mode. */ |
1690 | ||
b38ead21 | 1691 | static void |
caa32fe5 NC |
1692 | s_altmacro (int on) |
1693 | { | |
1694 | demand_empty_rest_of_line (); | |
1695 | macro_set_alternate (on); | |
1696 | } | |
1697 | ||
7bfd842d NC |
1698 | /* Read a symbol name from input_line_pointer. |
1699 | ||
1700 | Stores the symbol name in a buffer and returns a pointer to this buffer. | |
1701 | The buffer is xalloc'ed. It is the caller's responsibility to free | |
1702 | this buffer. | |
1703 | ||
1704 | The name is not left in the i_l_p buffer as it may need processing | |
1705 | to handle escape characters. | |
1706 | ||
1707 | Advances i_l_p to the next non-whitespace character. | |
1708 | ||
1709 | If a symbol name could not be read, the routine issues an error | |
1710 | messages, skips to the end of the line and returns NULL. */ | |
1711 | ||
69602580 | 1712 | char * |
7bfd842d NC |
1713 | read_symbol_name (void) |
1714 | { | |
1715 | char * name; | |
1716 | char * start; | |
1717 | char c; | |
1718 | ||
1719 | c = *input_line_pointer++; | |
1720 | ||
1721 | if (c == '"') | |
1722 | { | |
1723 | #define SYM_NAME_CHUNK_LEN 128 | |
1724 | ptrdiff_t len = SYM_NAME_CHUNK_LEN; | |
1725 | char * name_end; | |
1726 | unsigned int C; | |
1727 | ||
8860a416 | 1728 | start = name = XNEWVEC (char, len + 1); |
7bfd842d NC |
1729 | |
1730 | name_end = name + SYM_NAME_CHUNK_LEN; | |
1731 | ||
1732 | while (is_a_char (C = next_char_of_string ())) | |
1733 | { | |
1734 | if (name >= name_end) | |
1735 | { | |
1736 | ptrdiff_t sofar; | |
1737 | ||
1738 | sofar = name - start; | |
1739 | len += SYM_NAME_CHUNK_LEN; | |
8860a416 | 1740 | start = XRESIZEVEC (char, start, len + 1); |
7bfd842d NC |
1741 | name_end = start + len; |
1742 | name = start + sofar; | |
1743 | } | |
34bca508 | 1744 | |
7bfd842d NC |
1745 | *name++ = (char) C; |
1746 | } | |
1747 | *name = 0; | |
1748 | ||
1749 | /* Since quoted symbol names can contain non-ASCII characters, | |
1750 | check the string and warn if it cannot be recognised by the | |
1751 | current character set. */ | |
1752 | if (mbstowcs (NULL, name, len) == (size_t) -1) | |
1753 | as_warn (_("symbol name not recognised in the current locale")); | |
1754 | } | |
2469b3c5 | 1755 | else if (is_name_beginner (c) || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1756 | { |
1757 | ptrdiff_t len; | |
1758 | ||
1759 | name = input_line_pointer - 1; | |
1760 | ||
2469b3c5 | 1761 | /* We accept FAKE_LABEL_CHAR in a name in case this is |
7bfd842d NC |
1762 | being called with a constructed string. */ |
1763 | while (is_part_of_name (c = *input_line_pointer++) | |
2469b3c5 | 1764 | || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1765 | ; |
1766 | ||
1767 | len = (input_line_pointer - name) - 1; | |
8860a416 | 1768 | start = XNEWVEC (char, len + 1); |
7bfd842d NC |
1769 | |
1770 | memcpy (start, name, len); | |
1771 | start[len] = 0; | |
1772 | ||
1773 | /* Skip a name ender char if one is present. */ | |
1774 | if (! is_name_ender (c)) | |
1775 | --input_line_pointer; | |
1776 | } | |
1777 | else | |
1778 | name = start = NULL; | |
1779 | ||
1780 | if (name == start) | |
1781 | { | |
1782 | as_bad (_("expected symbol name")); | |
1783 | ignore_rest_of_line (); | |
1784 | return NULL; | |
1785 | } | |
34bca508 | 1786 | |
7bfd842d NC |
1787 | SKIP_WHITESPACE (); |
1788 | ||
1789 | return start; | |
1790 | } | |
1791 | ||
1792 | ||
e13bab5a AM |
1793 | symbolS * |
1794 | s_comm_internal (int param, | |
1795 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1796 | { |
e13bab5a | 1797 | char *name; |
e13bab5a AM |
1798 | offsetT temp, size; |
1799 | symbolS *symbolP = NULL; | |
252b5132 | 1800 | char *stop = NULL; |
fb25138b | 1801 | char stopc = 0; |
e13bab5a | 1802 | expressionS exp; |
252b5132 RH |
1803 | |
1804 | if (flag_mri) | |
1805 | stop = mri_comment_field (&stopc); | |
1806 | ||
7bfd842d NC |
1807 | if ((name = read_symbol_name ()) == NULL) |
1808 | goto out; | |
f0e652b4 | 1809 | |
e13bab5a AM |
1810 | /* Accept an optional comma after the name. The comma used to be |
1811 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1812 | if (*input_line_pointer == ',') | |
1813 | input_line_pointer++; | |
1814 | ||
e13bab5a AM |
1815 | temp = get_absolute_expr (&exp); |
1816 | size = temp; | |
65879393 | 1817 | size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1818 | if (exp.X_op == O_absent) |
252b5132 | 1819 | { |
e13bab5a | 1820 | as_bad (_("missing size expression")); |
252b5132 | 1821 | ignore_rest_of_line (); |
e13bab5a | 1822 | goto out; |
252b5132 | 1823 | } |
e13bab5a | 1824 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1825 | { |
e13bab5a | 1826 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1827 | ignore_rest_of_line (); |
e13bab5a | 1828 | goto out; |
252b5132 | 1829 | } |
f0e652b4 | 1830 | |
252b5132 | 1831 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1832 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1833 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1834 | { |
92757bc9 JB |
1835 | if (!S_IS_VOLATILE (symbolP)) |
1836 | { | |
1837 | symbolP = NULL; | |
1838 | as_bad (_("symbol `%s' is already defined"), name); | |
92757bc9 JB |
1839 | ignore_rest_of_line (); |
1840 | goto out; | |
1841 | } | |
89cdfe57 | 1842 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1843 | S_SET_SEGMENT (symbolP, undefined_section); |
1844 | S_SET_VALUE (symbolP, 0); | |
1845 | symbol_set_frag (symbolP, &zero_address_frag); | |
1846 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1847 | } |
f0e652b4 | 1848 | |
e13bab5a AM |
1849 | size = S_GET_VALUE (symbolP); |
1850 | if (size == 0) | |
1851 | size = temp; | |
1852 | else if (size != temp) | |
1853 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1854 | name, (long) size, (long) temp); | |
1855 | ||
e13bab5a AM |
1856 | if (comm_parse_extra != NULL) |
1857 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1858 | else |
1859 | { | |
e13bab5a | 1860 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1861 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1862 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
e13bab5a | 1863 | } |
252b5132 RH |
1864 | |
1865 | demand_empty_rest_of_line (); | |
e13bab5a | 1866 | out: |
252b5132 RH |
1867 | if (flag_mri) |
1868 | mri_comment_end (stop, stopc); | |
9fbb53c7 | 1869 | free (name); |
e13bab5a AM |
1870 | return symbolP; |
1871 | } | |
1872 | ||
1873 | void | |
1874 | s_comm (int ignore) | |
1875 | { | |
1876 | s_comm_internal (ignore, NULL); | |
1877 | } | |
252b5132 RH |
1878 | |
1879 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1880 | symbol with the appropriate name. We make s_space do the right | |
1881 | thing by increasing the size. */ | |
1882 | ||
1883 | void | |
39e6acbd | 1884 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1885 | { |
1886 | char *name; | |
1887 | char c; | |
1888 | char *alc = NULL; | |
1889 | symbolS *sym; | |
1890 | offsetT align; | |
1891 | char *stop = NULL; | |
fb25138b | 1892 | char stopc = 0; |
252b5132 | 1893 | |
041ff4dd | 1894 | if (!flag_mri) |
252b5132 RH |
1895 | { |
1896 | s_comm (0); | |
1897 | return; | |
1898 | } | |
1899 | ||
1900 | stop = mri_comment_field (&stopc); | |
1901 | ||
1902 | SKIP_WHITESPACE (); | |
1903 | ||
1904 | name = input_line_pointer; | |
3882b010 | 1905 | if (!ISDIGIT (*name)) |
d02603dc | 1906 | c = get_symbol_name (& name); |
252b5132 RH |
1907 | else |
1908 | { | |
1909 | do | |
1910 | { | |
1911 | ++input_line_pointer; | |
1912 | } | |
3882b010 | 1913 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1914 | |
252b5132 RH |
1915 | c = *input_line_pointer; |
1916 | *input_line_pointer = '\0'; | |
1917 | ||
1918 | if (line_label != NULL) | |
1919 | { | |
8860a416 TS |
1920 | alc = XNEWVEC (char, strlen (S_GET_NAME (line_label)) |
1921 | + (input_line_pointer - name) + 1); | |
252b5132 RH |
1922 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); |
1923 | name = alc; | |
1924 | } | |
1925 | } | |
1926 | ||
1927 | sym = symbol_find_or_make (name); | |
d02603dc | 1928 | c = restore_line_pointer (c); |
9fbb53c7 | 1929 | free (alc); |
252b5132 RH |
1930 | |
1931 | if (*input_line_pointer != ',') | |
1932 | align = 0; | |
1933 | else | |
1934 | { | |
1935 | ++input_line_pointer; | |
1936 | align = get_absolute_expression (); | |
1937 | } | |
1938 | ||
041ff4dd | 1939 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1940 | { |
0e389e77 | 1941 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1942 | ignore_rest_of_line (); |
1943 | mri_comment_end (stop, stopc); | |
1944 | return; | |
1945 | } | |
1946 | ||
1947 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1948 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1949 | mri_common_symbol = sym; |
1950 | ||
1951 | #ifdef S_SET_ALIGN | |
1952 | if (align != 0) | |
1953 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1954 | #else |
1955 | (void) align; | |
252b5132 RH |
1956 | #endif |
1957 | ||
1958 | if (line_label != NULL) | |
1959 | { | |
2b47531b ILT |
1960 | expressionS exp; |
1961 | exp.X_op = O_symbol; | |
1962 | exp.X_add_symbol = sym; | |
1963 | exp.X_add_number = 0; | |
1964 | symbol_set_value_expression (line_label, &exp); | |
1965 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1966 | S_SET_SEGMENT (line_label, expr_section); |
1967 | } | |
1968 | ||
1969 | /* FIXME: We just ignore the small argument, which distinguishes | |
1970 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1971 | ||
1972 | /* Ignore the type and hptype. */ | |
1973 | if (*input_line_pointer == ',') | |
1974 | input_line_pointer += 2; | |
1975 | if (*input_line_pointer == ',') | |
1976 | input_line_pointer += 2; | |
1977 | ||
1978 | demand_empty_rest_of_line (); | |
1979 | ||
1980 | mri_comment_end (stop, stopc); | |
1981 | } | |
1982 | ||
1983 | void | |
39e6acbd | 1984 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1985 | { |
1986 | segT section; | |
3d540e93 | 1987 | int temp; |
252b5132 RH |
1988 | |
1989 | temp = get_absolute_expression (); | |
1990 | if (flag_readonly_data_in_text) | |
1991 | { | |
1992 | section = text_section; | |
1993 | temp += 1000; | |
1994 | } | |
1995 | else | |
1996 | section = data_section; | |
1997 | ||
1998 | subseg_set (section, (subsegT) temp); | |
1999 | ||
252b5132 RH |
2000 | demand_empty_rest_of_line (); |
2001 | } | |
2002 | ||
2003 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
2004 | do_scrub_chars when a preprocessor # line comment is seen with a | |
2005 | file name. This default definition may be overridden by the object | |
2006 | or CPU specific pseudo-ops. This function is also the default | |
2007 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
2008 | .file. */ | |
2009 | ||
ecb4347a | 2010 | void |
f17c130b | 2011 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
2012 | { |
2013 | #ifdef LISTING | |
2014 | if (listing) | |
2015 | listing_source_file (file); | |
2016 | #endif | |
2017 | register_dependency (file); | |
2018 | #ifdef obj_app_file | |
c04f5787 | 2019 | obj_app_file (file, appfile); |
ecb4347a DJ |
2020 | #endif |
2021 | } | |
2022 | ||
041ff4dd | 2023 | void |
39e6acbd | 2024 | s_app_file (int appfile) |
252b5132 | 2025 | { |
3d540e93 | 2026 | char *s; |
252b5132 RH |
2027 | int length; |
2028 | ||
041ff4dd | 2029 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
2030 | if ((s = demand_copy_string (&length)) != 0) |
2031 | { | |
252b5132 | 2032 | int may_omit |
93e914b2 | 2033 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
2034 | |
2035 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 2036 | backquote. */ |
252b5132 RH |
2037 | if (flag_m68k_mri |
2038 | && *input_line_pointer == '\'' | |
2039 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
2040 | ++input_line_pointer; | |
2041 | ||
2042 | demand_empty_rest_of_line (); | |
041ff4dd | 2043 | if (!may_omit) |
c04f5787 | 2044 | s_app_file_string (s, appfile); |
252b5132 RH |
2045 | } |
2046 | } | |
2047 | ||
e9fc6c21 AO |
2048 | static int |
2049 | get_linefile_number (int *flag) | |
2050 | { | |
2051 | SKIP_WHITESPACE (); | |
2052 | ||
2053 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
2054 | return 0; | |
2055 | ||
2056 | *flag = get_absolute_expression (); | |
2057 | ||
2058 | return 1; | |
2059 | } | |
2060 | ||
252b5132 RH |
2061 | /* Handle the .appline pseudo-op. This is automatically generated by |
2062 | do_scrub_chars when a preprocessor # line comment is seen. This | |
2063 | default definition may be overridden by the object or CPU specific | |
2064 | pseudo-ops. */ | |
2065 | ||
2066 | void | |
93e914b2 | 2067 | s_app_line (int appline) |
252b5132 | 2068 | { |
e9fc6c21 | 2069 | char *file = NULL; |
252b5132 RH |
2070 | int l; |
2071 | ||
2072 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
2073 | if (appline) |
2074 | l = get_absolute_expression (); | |
2075 | else if (!get_linefile_number (&l)) | |
2076 | { | |
2077 | ignore_rest_of_line (); | |
2078 | return; | |
2079 | } | |
2080 | ||
2081 | l--; | |
47837f8e NC |
2082 | |
2083 | if (l < -1) | |
252b5132 | 2084 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
2085 | Besides, it's silly. GCC however will generate a line number of |
2086 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
2087 | ||
fa94de6b | 2088 | # 0 "<built-in>" |
47837f8e NC |
2089 | |
2090 | We do not want to barf on this, especially since such files are used | |
2091 | in the GCC and GDB testsuites. So we check for negative line numbers | |
2092 | rather than non-positive line numbers. */ | |
0e389e77 | 2093 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 2094 | l + 1); |
252b5132 RH |
2095 | else |
2096 | { | |
93e914b2 | 2097 | int flags = 0; |
93e914b2 AO |
2098 | int length = 0; |
2099 | ||
2100 | if (!appline) | |
2101 | { | |
e9fc6c21 AO |
2102 | SKIP_WHITESPACE (); |
2103 | ||
2104 | if (*input_line_pointer == '"') | |
2105 | file = demand_copy_string (&length); | |
93e914b2 AO |
2106 | |
2107 | if (file) | |
2108 | { | |
2109 | int this_flag; | |
2110 | ||
e9fc6c21 | 2111 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
2112 | switch (this_flag) |
2113 | { | |
2114 | /* From GCC's cpp documentation: | |
2115 | 1: start of a new file. | |
2116 | 2: returning to a file after having included | |
fa94de6b | 2117 | another file. |
93e914b2 AO |
2118 | 3: following text comes from a system header file. |
2119 | 4: following text should be treated as extern "C". | |
2120 | ||
2121 | 4 is nonsensical for the assembler; 3, we don't | |
2122 | care about, so we ignore it just in case a | |
2123 | system header file is included while | |
2124 | preprocessing assembly. So 1 and 2 are all we | |
2125 | care about, and they are mutually incompatible. | |
2126 | new_logical_line_flags() demands this. */ | |
2127 | case 1: | |
2128 | case 2: | |
2129 | if (flags && flags != (1 << this_flag)) | |
2130 | as_warn (_("incompatible flag %i in line directive"), | |
2131 | this_flag); | |
2132 | else | |
2133 | flags |= 1 << this_flag; | |
2134 | break; | |
2135 | ||
2136 | case 3: | |
2137 | case 4: | |
2138 | /* We ignore these. */ | |
2139 | break; | |
2140 | ||
2141 | default: | |
2142 | as_warn (_("unsupported flag %i in line directive"), | |
2143 | this_flag); | |
2144 | break; | |
2145 | } | |
e9fc6c21 AO |
2146 | |
2147 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
2148 | file = 0; | |
93e914b2 AO |
2149 | } |
2150 | } | |
2151 | ||
e9fc6c21 AO |
2152 | if (appline || file) |
2153 | { | |
2154 | new_logical_line_flags (file, l, flags); | |
252b5132 | 2155 | #ifdef LISTING |
e9fc6c21 AO |
2156 | if (listing) |
2157 | listing_source_line (l); | |
252b5132 | 2158 | #endif |
e9fc6c21 | 2159 | } |
252b5132 | 2160 | } |
e9fc6c21 AO |
2161 | if (appline || file) |
2162 | demand_empty_rest_of_line (); | |
2163 | else | |
2164 | ignore_rest_of_line (); | |
252b5132 RH |
2165 | } |
2166 | ||
2167 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
2168 | read_a_source_file. */ | |
2169 | ||
2170 | void | |
39e6acbd | 2171 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2172 | { |
2173 | if (flag_mri) | |
2174 | { | |
2175 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 2176 | but we don't support that. */ |
252b5132 | 2177 | SKIP_WHITESPACE (); |
041ff4dd | 2178 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2179 | && *input_line_pointer != '*' |
2180 | && *input_line_pointer != '!') | |
2181 | as_warn (_("start address not supported")); | |
2182 | } | |
2183 | } | |
2184 | ||
2185 | /* Handle the .err pseudo-op. */ | |
2186 | ||
2187 | void | |
39e6acbd | 2188 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2189 | { |
2190 | as_bad (_(".err encountered")); | |
2191 | demand_empty_rest_of_line (); | |
d190d046 HPN |
2192 | } |
2193 | ||
2194 | /* Handle the .error and .warning pseudo-ops. */ | |
2195 | ||
2196 | void | |
2197 | s_errwarn (int err) | |
2198 | { | |
2199 | int len; | |
2200 | /* The purpose for the conditional assignment is not to | |
2201 | internationalize the directive itself, but that we need a | |
2202 | self-contained message, one that can be passed like the | |
2203 | demand_copy_C_string return value, and with no assumption on the | |
2204 | location of the name of the directive within the message. */ | |
6d4af3c2 | 2205 | const char *msg |
d190d046 HPN |
2206 | = (err ? _(".error directive invoked in source file") |
2207 | : _(".warning directive invoked in source file")); | |
2208 | ||
2209 | if (!is_it_end_of_statement ()) | |
2210 | { | |
2211 | if (*input_line_pointer != '\"') | |
2212 | { | |
2213 | as_bad (_("%s argument must be a string"), | |
2214 | err ? ".error" : ".warning"); | |
40a4d956 | 2215 | ignore_rest_of_line (); |
d190d046 HPN |
2216 | return; |
2217 | } | |
2218 | ||
2219 | msg = demand_copy_C_string (&len); | |
2220 | if (msg == NULL) | |
2221 | return; | |
2222 | } | |
2223 | ||
2224 | if (err) | |
2225 | as_bad ("%s", msg); | |
2226 | else | |
2227 | as_warn ("%s", msg); | |
2228 | demand_empty_rest_of_line (); | |
252b5132 RH |
2229 | } |
2230 | ||
2231 | /* Handle the MRI fail pseudo-op. */ | |
2232 | ||
2233 | void | |
39e6acbd | 2234 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2235 | { |
2236 | offsetT temp; | |
2237 | char *stop = NULL; | |
fb25138b | 2238 | char stopc = 0; |
252b5132 RH |
2239 | |
2240 | if (flag_mri) | |
2241 | stop = mri_comment_field (&stopc); | |
2242 | ||
2243 | temp = get_absolute_expression (); | |
2244 | if (temp >= 500) | |
2245 | as_warn (_(".fail %ld encountered"), (long) temp); | |
2246 | else | |
2247 | as_bad (_(".fail %ld encountered"), (long) temp); | |
2248 | ||
2249 | demand_empty_rest_of_line (); | |
2250 | ||
2251 | if (flag_mri) | |
2252 | mri_comment_end (stop, stopc); | |
2253 | } | |
2254 | ||
041ff4dd | 2255 | void |
39e6acbd | 2256 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2257 | { |
2258 | expressionS rep_exp; | |
2259 | long size = 1; | |
3d540e93 | 2260 | long fill = 0; |
252b5132 RH |
2261 | char *p; |
2262 | ||
2263 | #ifdef md_flush_pending_output | |
2264 | md_flush_pending_output (); | |
2265 | #endif | |
2266 | ||
cc3f603a JM |
2267 | #ifdef md_cons_align |
2268 | md_cons_align (1); | |
2269 | #endif | |
2270 | ||
4f2358bc | 2271 | expression (&rep_exp); |
252b5132 RH |
2272 | if (*input_line_pointer == ',') |
2273 | { | |
2274 | input_line_pointer++; | |
2275 | size = get_absolute_expression (); | |
2276 | if (*input_line_pointer == ',') | |
2277 | { | |
2278 | input_line_pointer++; | |
2279 | fill = get_absolute_expression (); | |
2280 | } | |
2281 | } | |
2282 | ||
2283 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
2284 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
2285 | if (size > BSD_FILL_SIZE_CROCK_8) | |
2286 | { | |
0e389e77 | 2287 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
2288 | size = BSD_FILL_SIZE_CROCK_8; |
2289 | } | |
2290 | if (size < 0) | |
2291 | { | |
0e389e77 | 2292 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
2293 | size = 0; |
2294 | } | |
2295 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
2296 | { | |
2297 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 2298 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
2299 | size = 0; |
2300 | } | |
2301 | ||
2302 | if (size && !need_pass_2) | |
2303 | { | |
ec9ab52c JB |
2304 | if (now_seg == absolute_section) |
2305 | { | |
2306 | if (rep_exp.X_op != O_constant) | |
2307 | as_bad (_("non-constant fill count for absolute section")); | |
2308 | else if (fill && rep_exp.X_add_number != 0) | |
2309 | as_bad (_("attempt to fill absolute section with non-zero value")); | |
2310 | abs_section_offset += rep_exp.X_add_number * size; | |
2311 | } | |
2312 | else if (fill | |
2313 | && (rep_exp.X_op != O_constant || rep_exp.X_add_number != 0) | |
2314 | && in_bss ()) | |
2315 | as_bad (_("attempt to fill section `%s' with non-zero value"), | |
2316 | segment_name (now_seg)); | |
2317 | ||
252b5132 RH |
2318 | if (rep_exp.X_op == O_constant) |
2319 | { | |
2320 | p = frag_var (rs_fill, (int) size, (int) size, | |
2321 | (relax_substateT) 0, (symbolS *) 0, | |
2322 | (offsetT) rep_exp.X_add_number, | |
2323 | (char *) 0); | |
2324 | } | |
2325 | else | |
2326 | { | |
2327 | /* We don't have a constant repeat count, so we can't use | |
2328 | rs_fill. We can get the same results out of rs_space, | |
2329 | but its argument is in bytes, so we must multiply the | |
2330 | repeat count by size. */ | |
2331 | ||
2332 | symbolS *rep_sym; | |
2333 | rep_sym = make_expr_symbol (&rep_exp); | |
2334 | if (size != 1) | |
2335 | { | |
2336 | expressionS size_exp; | |
2337 | size_exp.X_op = O_constant; | |
2338 | size_exp.X_add_number = size; | |
2339 | ||
2340 | rep_exp.X_op = O_multiply; | |
2341 | rep_exp.X_add_symbol = rep_sym; | |
2342 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
2343 | rep_exp.X_add_number = 0; | |
2344 | rep_sym = make_expr_symbol (&rep_exp); | |
2345 | } | |
2346 | ||
2347 | p = frag_var (rs_space, (int) size, (int) size, | |
2348 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
2349 | } | |
f0e652b4 | 2350 | |
252b5132 | 2351 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2352 | |
252b5132 | 2353 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2354 | flavoured AS. The following bizarre behaviour is to be |
2355 | compatible with above. I guess they tried to take up to 8 | |
2356 | bytes from a 4-byte expression and they forgot to sign | |
2357 | extend. */ | |
252b5132 RH |
2358 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2359 | md_number_to_chars (p, (valueT) fill, | |
2360 | (size > BSD_FILL_SIZE_CROCK_4 | |
2361 | ? BSD_FILL_SIZE_CROCK_4 | |
2362 | : (int) size)); | |
2363 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2364 | but emits no error message because it seems a legal thing to do. |
2365 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2366 | compiler. */ |
252b5132 RH |
2367 | } |
2368 | demand_empty_rest_of_line (); | |
2369 | } | |
2370 | ||
041ff4dd | 2371 | void |
39e6acbd | 2372 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2373 | { |
2374 | char *name; | |
2375 | int c; | |
2376 | symbolS *symbolP; | |
2377 | char *stop = NULL; | |
fb25138b | 2378 | char stopc = 0; |
252b5132 RH |
2379 | |
2380 | if (flag_mri) | |
2381 | stop = mri_comment_field (&stopc); | |
2382 | ||
2383 | do | |
2384 | { | |
7bfd842d NC |
2385 | if ((name = read_symbol_name ()) == NULL) |
2386 | return; | |
2387 | ||
252b5132 | 2388 | symbolP = symbol_find_or_make (name); |
58b5739a RH |
2389 | S_SET_EXTERNAL (symbolP); |
2390 | ||
252b5132 | 2391 | SKIP_WHITESPACE (); |
58b5739a | 2392 | c = *input_line_pointer; |
252b5132 RH |
2393 | if (c == ',') |
2394 | { | |
2395 | input_line_pointer++; | |
2396 | SKIP_WHITESPACE (); | |
0e389e77 | 2397 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2398 | c = '\n'; |
2399 | } | |
7bfd842d NC |
2400 | |
2401 | free (name); | |
252b5132 RH |
2402 | } |
2403 | while (c == ','); | |
2404 | ||
2405 | demand_empty_rest_of_line (); | |
2406 | ||
2407 | if (flag_mri) | |
2408 | mri_comment_end (stop, stopc); | |
2409 | } | |
2410 | ||
2411 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2412 | ||
2413 | void | |
39e6acbd | 2414 | s_irp (int irpc) |
252b5132 | 2415 | { |
3b4dbbbf TS |
2416 | char * eol; |
2417 | const char * file; | |
252b5132 RH |
2418 | unsigned int line; |
2419 | sb s; | |
2420 | const char *err; | |
2421 | sb out; | |
2422 | ||
3b4dbbbf | 2423 | file = as_where (&line); |
252b5132 | 2424 | |
40a4d956 | 2425 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2426 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2427 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2428 | input_line_pointer = eol; | |
252b5132 RH |
2429 | |
2430 | sb_new (&out); | |
2431 | ||
7592cfd7 | 2432 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2433 | if (err != NULL) |
2434 | as_bad_where (file, line, "%s", err); | |
2435 | ||
2436 | sb_kill (&s); | |
2437 | ||
9f10757c | 2438 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2439 | sb_kill (&out); |
2440 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2441 | } | |
2442 | ||
2443 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2444 | the section to only be linked once. However, this is not supported | |
2445 | by most object file formats. This takes an optional argument, | |
2446 | which is what to do about duplicates. */ | |
2447 | ||
2448 | void | |
39e6acbd | 2449 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2450 | { |
2451 | enum linkonce_type type; | |
2452 | ||
2453 | SKIP_WHITESPACE (); | |
2454 | ||
2455 | type = LINKONCE_DISCARD; | |
2456 | ||
041ff4dd | 2457 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2458 | { |
2459 | char *s; | |
2460 | char c; | |
2461 | ||
d02603dc | 2462 | c = get_symbol_name (& s); |
252b5132 RH |
2463 | if (strcasecmp (s, "discard") == 0) |
2464 | type = LINKONCE_DISCARD; | |
2465 | else if (strcasecmp (s, "one_only") == 0) | |
2466 | type = LINKONCE_ONE_ONLY; | |
2467 | else if (strcasecmp (s, "same_size") == 0) | |
2468 | type = LINKONCE_SAME_SIZE; | |
2469 | else if (strcasecmp (s, "same_contents") == 0) | |
2470 | type = LINKONCE_SAME_CONTENTS; | |
2471 | else | |
2472 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2473 | ||
d02603dc | 2474 | (void) restore_line_pointer (c); |
252b5132 RH |
2475 | } |
2476 | ||
2477 | #ifdef obj_handle_link_once | |
2478 | obj_handle_link_once (type); | |
2479 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2480 | { |
2481 | flagword flags; | |
2482 | ||
2483 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2484 | as_warn (_(".linkonce is not supported for this object file format")); | |
2485 | ||
fd361982 | 2486 | flags = bfd_section_flags (now_seg); |
252b5132 RH |
2487 | flags |= SEC_LINK_ONCE; |
2488 | switch (type) | |
2489 | { | |
2490 | default: | |
2491 | abort (); | |
2492 | case LINKONCE_DISCARD: | |
2493 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2494 | break; | |
2495 | case LINKONCE_ONE_ONLY: | |
2496 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2497 | break; | |
2498 | case LINKONCE_SAME_SIZE: | |
2499 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2500 | break; | |
2501 | case LINKONCE_SAME_CONTENTS: | |
2502 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2503 | break; | |
2504 | } | |
fd361982 | 2505 | if (!bfd_set_section_flags (now_seg, flags)) |
252b5132 RH |
2506 | as_bad (_("bfd_set_section_flags: %s"), |
2507 | bfd_errmsg (bfd_get_error ())); | |
2508 | } | |
252b5132 RH |
2509 | #endif /* ! defined (obj_handle_link_once) */ |
2510 | ||
2511 | demand_empty_rest_of_line (); | |
2512 | } | |
2513 | ||
e13bab5a | 2514 | void |
9136aa49 | 2515 | bss_alloc (symbolS *symbolP, addressT size, unsigned int align) |
252b5132 | 2516 | { |
e13bab5a | 2517 | char *pfrag; |
252b5132 RH |
2518 | segT current_seg = now_seg; |
2519 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2520 | segT bss_seg = bss_section; |
2521 | ||
252b5132 RH |
2522 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2523 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2524 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2525 | { | |
2526 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2527 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2528 | { |
2529 | bss_seg = subseg_new (".sbss", 1); | |
2530 | seg_info (bss_seg)->bss = 1; | |
a4dd6c97 | 2531 | if (!bfd_set_section_flags (bss_seg, SEC_ALLOC | SEC_SMALL_DATA)) |
252b5132 RH |
2532 | as_warn (_("error setting flags for \".sbss\": %s"), |
2533 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2534 | } |
2535 | } | |
2536 | #endif | |
e13bab5a | 2537 | subseg_set (bss_seg, 1); |
8684e216 | 2538 | |
9136aa49 | 2539 | if (align > OCTETS_PER_BYTE_POWER) |
041ff4dd | 2540 | { |
e13bab5a AM |
2541 | record_alignment (bss_seg, align); |
2542 | frag_align (align, 0, 0); | |
041ff4dd | 2543 | } |
252b5132 | 2544 | |
e13bab5a AM |
2545 | /* Detach from old frag. */ |
2546 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2547 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2548 | |
e13bab5a | 2549 | symbol_set_frag (symbolP, frag_now); |
5947daaf | 2550 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size * OCTETS_PER_BYTE, NULL); |
e13bab5a | 2551 | *pfrag = 0; |
f0e652b4 | 2552 | |
e13bab5a AM |
2553 | #ifdef S_SET_SIZE |
2554 | S_SET_SIZE (symbolP, size); | |
2555 | #endif | |
2556 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2557 | |
e13bab5a AM |
2558 | #ifdef OBJ_COFF |
2559 | /* The symbol may already have been created with a preceding | |
2560 | ".globl" directive -- be careful not to step on storage class | |
2561 | in that case. Otherwise, set it to static. */ | |
2562 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2563 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2564 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2565 | |
e13bab5a AM |
2566 | subseg_set (current_seg, current_subseg); |
2567 | } | |
f0e652b4 | 2568 | |
e13bab5a AM |
2569 | offsetT |
2570 | parse_align (int align_bytes) | |
2571 | { | |
2572 | expressionS exp; | |
2573 | addressT align; | |
252b5132 | 2574 | |
e13bab5a AM |
2575 | SKIP_WHITESPACE (); |
2576 | if (*input_line_pointer != ',') | |
2577 | { | |
2578 | no_align: | |
2579 | as_bad (_("expected alignment after size")); | |
2580 | ignore_rest_of_line (); | |
2581 | return -1; | |
2582 | } | |
f0e652b4 | 2583 | |
e13bab5a AM |
2584 | input_line_pointer++; |
2585 | SKIP_WHITESPACE (); | |
f0e652b4 | 2586 | |
e13bab5a AM |
2587 | align = get_absolute_expr (&exp); |
2588 | if (exp.X_op == O_absent) | |
2589 | goto no_align; | |
2590 | ||
2591 | if (!exp.X_unsigned) | |
2592 | { | |
2593 | as_warn (_("alignment negative; 0 assumed")); | |
2594 | align = 0; | |
041ff4dd | 2595 | } |
e13bab5a AM |
2596 | |
2597 | if (align_bytes && align != 0) | |
252b5132 | 2598 | { |
e13bab5a AM |
2599 | /* convert to a power of 2 alignment */ |
2600 | unsigned int alignp2 = 0; | |
2601 | while ((align & 1) == 0) | |
2602 | align >>= 1, ++alignp2; | |
2603 | if (align != 1) | |
252b5132 | 2604 | { |
e13bab5a AM |
2605 | as_bad (_("alignment not a power of 2")); |
2606 | ignore_rest_of_line (); | |
2607 | return -1; | |
252b5132 | 2608 | } |
e13bab5a | 2609 | align = alignp2; |
252b5132 | 2610 | } |
e13bab5a AM |
2611 | return align; |
2612 | } | |
252b5132 | 2613 | |
e13bab5a AM |
2614 | /* Called from s_comm_internal after symbol name and size have been |
2615 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2616 | 1 if this was a ".bss" directive which has a 3rd argument | |
2617 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2618 | with alignment in bytes. */ | |
252b5132 | 2619 | |
13c56984 | 2620 | symbolS * |
e13bab5a AM |
2621 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2622 | { | |
2623 | addressT align = 0; | |
252b5132 | 2624 | |
e13bab5a AM |
2625 | if (needs_align) |
2626 | { | |
2627 | align = parse_align (needs_align - 1); | |
2628 | if (align == (addressT) -1) | |
2629 | return NULL; | |
252b5132 RH |
2630 | } |
2631 | else | |
e13bab5a AM |
2632 | /* Assume some objects may require alignment on some systems. */ |
2633 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2634 | |
e13bab5a AM |
2635 | bss_alloc (symbolP, size, align); |
2636 | return symbolP; | |
041ff4dd | 2637 | } |
252b5132 RH |
2638 | |
2639 | void | |
39e6acbd | 2640 | s_lcomm (int needs_align) |
252b5132 | 2641 | { |
e13bab5a | 2642 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2643 | } |
2644 | ||
041ff4dd | 2645 | void |
39e6acbd | 2646 | s_lcomm_bytes (int needs_align) |
252b5132 | 2647 | { |
e13bab5a | 2648 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2649 | } |
2650 | ||
041ff4dd | 2651 | void |
39e6acbd | 2652 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2653 | { |
3d540e93 | 2654 | char *name; |
252b5132 | 2655 | expressionS exp; |
3d540e93 | 2656 | symbolS *symbolP; |
252b5132 | 2657 | |
041ff4dd | 2658 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
7bfd842d NC |
2659 | if ((name = read_symbol_name ()) == NULL) |
2660 | return; | |
f0e652b4 | 2661 | |
252b5132 RH |
2662 | if (*input_line_pointer != ',') |
2663 | { | |
0e389e77 | 2664 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 2665 | goto err_out; |
252b5132 | 2666 | } |
f0e652b4 | 2667 | |
252b5132 | 2668 | input_line_pointer++; |
9497f5ac | 2669 | expression_and_evaluate (&exp); |
f0e652b4 | 2670 | |
252b5132 RH |
2671 | if (exp.X_op != O_constant |
2672 | && exp.X_op != O_register) | |
2673 | { | |
2674 | as_bad (_("bad expression")); | |
7bfd842d | 2675 | goto err_out; |
252b5132 | 2676 | } |
f0e652b4 | 2677 | |
252b5132 RH |
2678 | symbolP = symbol_find_or_make (name); |
2679 | ||
86ebace2 | 2680 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2681 | { |
2682 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2683 | keep the "external" bit. */ |
252b5132 RH |
2684 | S_SET_SEGMENT (symbolP, |
2685 | (exp.X_op == O_constant | |
2686 | ? absolute_section | |
2687 | : reg_section)); | |
2688 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2689 | } | |
2690 | else | |
2691 | { | |
0e389e77 | 2692 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2693 | } |
f0e652b4 | 2694 | |
252b5132 | 2695 | demand_empty_rest_of_line (); |
7bfd842d NC |
2696 | free (name); |
2697 | return; | |
2698 | ||
2699 | err_out: | |
2700 | ignore_rest_of_line (); | |
2701 | free (name); | |
2702 | return; | |
041ff4dd | 2703 | } |
252b5132 | 2704 | |
0822d075 NC |
2705 | /* Read a line into an sb. Returns the character that ended the line |
2706 | or zero if there are no more lines. */ | |
252b5132 RH |
2707 | |
2708 | static int | |
7592cfd7 | 2709 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2710 | { |
40a4d956 | 2711 | char *eol; |
252b5132 RH |
2712 | |
2713 | if (input_line_pointer[-1] == '\n') | |
2714 | bump_line_counters (); | |
2715 | ||
2716 | if (input_line_pointer >= buffer_limit) | |
2717 | { | |
2718 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2719 | if (buffer_limit == 0) | |
2720 | return 0; | |
2721 | } | |
2722 | ||
7592cfd7 | 2723 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2724 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2725 | input_line_pointer = eol; | |
f0e652b4 | 2726 | |
0822d075 NC |
2727 | /* Don't skip multiple end-of-line characters, because that breaks support |
2728 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2729 | characters but isn't. Instead just skip one end of line character and | |
2730 | return the character skipped so that the caller can re-insert it if | |
2731 | necessary. */ | |
40a4d956 | 2732 | return *input_line_pointer++; |
252b5132 RH |
2733 | } |
2734 | ||
39a45edc | 2735 | static size_t |
7592cfd7 NC |
2736 | get_non_macro_line_sb (sb *line) |
2737 | { | |
2738 | return get_line_sb (line, 0); | |
2739 | } | |
2740 | ||
39a45edc | 2741 | static size_t |
7592cfd7 NC |
2742 | get_macro_line_sb (sb *line) |
2743 | { | |
2744 | return get_line_sb (line, 1); | |
2745 | } | |
2746 | ||
fea17916 | 2747 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2748 | |
2749 | void | |
39e6acbd | 2750 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2751 | { |
3b4dbbbf TS |
2752 | char *eol; |
2753 | const char * file; | |
252b5132 RH |
2754 | unsigned int line; |
2755 | sb s; | |
252b5132 RH |
2756 | const char *err; |
2757 | const char *name; | |
2758 | ||
3b4dbbbf | 2759 | file = as_where (&line); |
252b5132 | 2760 | |
40a4d956 | 2761 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2762 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2763 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2764 | input_line_pointer = eol; | |
252b5132 | 2765 | |
252b5132 | 2766 | if (line_label != NULL) |
360e86f1 JB |
2767 | { |
2768 | sb label; | |
d2ae702c | 2769 | size_t len; |
252b5132 | 2770 | |
d2ae702c L |
2771 | name = S_GET_NAME (line_label); |
2772 | len = strlen (name); | |
2773 | sb_build (&label, len); | |
2774 | sb_add_buffer (&label, name, len); | |
7592cfd7 | 2775 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2776 | sb_kill (&label); |
2777 | } | |
2778 | else | |
7592cfd7 | 2779 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2780 | if (err != NULL) |
02ddf156 | 2781 | as_bad_where (file, line, err, name); |
252b5132 RH |
2782 | else |
2783 | { | |
2784 | if (line_label != NULL) | |
2785 | { | |
5e75c3ab | 2786 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2787 | S_SET_VALUE (line_label, 0); |
2b47531b | 2788 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2789 | } |
2790 | ||
abd63a32 | 2791 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
32e4c1c2 | 2792 | && po_entry_find (po_hash, name) != NULL) |
041ff4dd | 2793 | || (!flag_m68k_mri |
252b5132 | 2794 | && *name == '.' |
32e4c1c2 | 2795 | && po_entry_find (po_hash, name + 1) != NULL)) |
02ddf156 JB |
2796 | as_warn_where (file, |
2797 | line, | |
2798 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2799 | name); |
2800 | } | |
2801 | ||
2802 | sb_kill (&s); | |
2803 | } | |
2804 | ||
2805 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2806 | expansion. */ | |
2807 | ||
2808 | void | |
39e6acbd | 2809 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2810 | { |
5808f4a6 NC |
2811 | if (macro_nest) |
2812 | { | |
2813 | cond_exit_macro (macro_nest); | |
2814 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2815 | } | |
2816 | else | |
2817 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2818 | } |
2819 | ||
2820 | /* Switch in and out of MRI mode. */ | |
2821 | ||
2822 | void | |
39e6acbd | 2823 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2824 | { |
3d540e93 NC |
2825 | int on; |
2826 | #ifdef MRI_MODE_CHANGE | |
2827 | int old_flag; | |
2828 | #endif | |
252b5132 RH |
2829 | |
2830 | on = get_absolute_expression (); | |
3d540e93 | 2831 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2832 | old_flag = flag_mri; |
3d540e93 | 2833 | #endif |
252b5132 RH |
2834 | if (on != 0) |
2835 | { | |
2836 | flag_mri = 1; | |
2837 | #ifdef TC_M68K | |
2838 | flag_m68k_mri = 1; | |
2839 | #endif | |
2840 | macro_mri_mode (1); | |
2841 | } | |
2842 | else | |
2843 | { | |
2844 | flag_mri = 0; | |
abd63a32 | 2845 | #ifdef TC_M68K |
252b5132 | 2846 | flag_m68k_mri = 0; |
abd63a32 | 2847 | #endif |
252b5132 RH |
2848 | macro_mri_mode (0); |
2849 | } | |
2850 | ||
2851 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2852 | update the operator rankings. */ | |
2853 | expr_set_precedence (); | |
2854 | ||
2855 | #ifdef MRI_MODE_CHANGE | |
2856 | if (on != old_flag) | |
2857 | MRI_MODE_CHANGE (on); | |
2858 | #endif | |
2859 | ||
2860 | demand_empty_rest_of_line (); | |
2861 | } | |
2862 | ||
2863 | /* Handle changing the location counter. */ | |
2864 | ||
2865 | static void | |
39e6acbd | 2866 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 | 2867 | { |
259af69e AM |
2868 | if (segment != now_seg |
2869 | && segment != absolute_section | |
2870 | && segment != expr_section) | |
0e389e77 | 2871 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2872 | |
2873 | if (now_seg == absolute_section) | |
2874 | { | |
2875 | if (fill != 0) | |
2876 | as_warn (_("ignoring fill value in absolute section")); | |
2877 | if (exp->X_op != O_constant) | |
2878 | { | |
2879 | as_bad (_("only constant offsets supported in absolute section")); | |
2880 | exp->X_add_number = 0; | |
2881 | } | |
2882 | abs_section_offset = exp->X_add_number; | |
2883 | } | |
2884 | else | |
2885 | { | |
2886 | char *p; | |
2289f85d AM |
2887 | symbolS *sym = exp->X_add_symbol; |
2888 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2889 | |
ec9ab52c JB |
2890 | if (fill && in_bss ()) |
2891 | as_warn (_("ignoring fill value in section `%s'"), | |
2892 | segment_name (now_seg)); | |
2893 | ||
2289f85d AM |
2894 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2895 | { | |
2896 | /* Handle complex expressions. */ | |
2897 | sym = make_expr_symbol (exp); | |
2898 | off = 0; | |
2899 | } | |
2900 | ||
2901 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2902 | *p = fill; |
2903 | } | |
2904 | } | |
2905 | ||
041ff4dd | 2906 | void |
39e6acbd | 2907 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2908 | { |
3d540e93 | 2909 | segT segment; |
252b5132 | 2910 | expressionS exp; |
3d540e93 | 2911 | long temp_fill; |
252b5132 RH |
2912 | |
2913 | #ifdef md_flush_pending_output | |
2914 | md_flush_pending_output (); | |
2915 | #endif | |
2916 | ||
2917 | /* The m68k MRI assembler has a different meaning for .org. It | |
2918 | means to create an absolute section at a given address. We can't | |
2919 | support that--use a linker script instead. */ | |
2920 | if (flag_m68k_mri) | |
2921 | { | |
2922 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2923 | ignore_rest_of_line (); | |
2924 | return; | |
2925 | } | |
2926 | ||
2927 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2928 | thing as a sub-segment-relative origin. Any absolute origin is | |
2929 | given a warning, then assumed to be segment-relative. Any | |
2930 | segmented origin expression ("foo+42") had better be in the right | |
2931 | segment or the .org is ignored. | |
2932 | ||
2933 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2934 | we never know sub-segment sizes when we are reading code. BSD | |
2935 | will crash trying to emit negative numbers of filler bytes in | |
2936 | certain .orgs. We don't crash, but see as-write for that code. | |
2937 | ||
2938 | Don't make frag if need_pass_2==1. */ | |
2939 | segment = get_known_segmented_expression (&exp); | |
2940 | if (*input_line_pointer == ',') | |
2941 | { | |
2942 | input_line_pointer++; | |
2943 | temp_fill = get_absolute_expression (); | |
2944 | } | |
2945 | else | |
2946 | temp_fill = 0; | |
2947 | ||
2948 | if (!need_pass_2) | |
2949 | do_org (segment, &exp, temp_fill); | |
2950 | ||
2951 | demand_empty_rest_of_line (); | |
041ff4dd | 2952 | } |
252b5132 RH |
2953 | |
2954 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2955 | called by the obj-format routine which handles section changing | |
2956 | when in MRI mode. It will create a new section, and return it. It | |
2957 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2958 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2959 | |
2960 | void | |
39e6acbd | 2961 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2962 | { |
2963 | #ifdef TC_M68K | |
2964 | ||
2965 | char *name; | |
2966 | char c; | |
2967 | segT seg; | |
2968 | ||
2969 | SKIP_WHITESPACE (); | |
041ff4dd | 2970 | |
252b5132 | 2971 | name = input_line_pointer; |
3882b010 | 2972 | if (!ISDIGIT (*name)) |
d02603dc | 2973 | c = get_symbol_name (& name); |
252b5132 RH |
2974 | else |
2975 | { | |
2976 | do | |
2977 | { | |
2978 | ++input_line_pointer; | |
2979 | } | |
3882b010 | 2980 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2981 | |
252b5132 RH |
2982 | c = *input_line_pointer; |
2983 | *input_line_pointer = '\0'; | |
2984 | } | |
2985 | ||
2986 | name = xstrdup (name); | |
2987 | ||
d02603dc | 2988 | c = restore_line_pointer (c); |
252b5132 RH |
2989 | |
2990 | seg = subseg_new (name, 0); | |
2991 | ||
d02603dc | 2992 | if (c == ',') |
252b5132 | 2993 | { |
9136aa49 | 2994 | unsigned int align; |
252b5132 RH |
2995 | |
2996 | ++input_line_pointer; | |
2997 | align = get_absolute_expression (); | |
2998 | record_alignment (seg, align); | |
2999 | } | |
3000 | ||
3001 | *type = 'C'; | |
3002 | if (*input_line_pointer == ',') | |
3003 | { | |
3004 | c = *++input_line_pointer; | |
3882b010 | 3005 | c = TOUPPER (c); |
252b5132 RH |
3006 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
3007 | *type = c; | |
3008 | else | |
3009 | as_bad (_("unrecognized section type")); | |
3010 | ++input_line_pointer; | |
3011 | ||
252b5132 RH |
3012 | { |
3013 | flagword flags; | |
3014 | ||
3015 | flags = SEC_NO_FLAGS; | |
3016 | if (*type == 'C') | |
3017 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
3018 | else if (*type == 'D' || *type == 'M') | |
3019 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
3020 | else if (*type == 'R') | |
3021 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
3022 | if (flags != SEC_NO_FLAGS) | |
3023 | { | |
fd361982 | 3024 | if (!bfd_set_section_flags (seg, flags)) |
252b5132 | 3025 | as_warn (_("error setting flags for \"%s\": %s"), |
fd361982 | 3026 | bfd_section_name (seg), |
252b5132 RH |
3027 | bfd_errmsg (bfd_get_error ())); |
3028 | } | |
3029 | } | |
252b5132 RH |
3030 | } |
3031 | ||
3032 | /* Ignore the HP type. */ | |
3033 | if (*input_line_pointer == ',') | |
3034 | input_line_pointer += 2; | |
3035 | ||
3036 | demand_empty_rest_of_line (); | |
3037 | ||
3038 | #else /* ! TC_M68K */ | |
252b5132 RH |
3039 | /* The MRI assembler seems to use different forms of .sect for |
3040 | different targets. */ | |
3041 | as_bad ("MRI mode not supported for this target"); | |
3042 | ignore_rest_of_line (); | |
252b5132 RH |
3043 | #endif /* ! TC_M68K */ |
3044 | } | |
3045 | ||
3046 | /* Handle the .print pseudo-op. */ | |
3047 | ||
3048 | void | |
39e6acbd | 3049 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3050 | { |
3051 | char *s; | |
3052 | int len; | |
3053 | ||
3054 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
3055 | if (s != NULL) |
3056 | printf ("%s\n", s); | |
252b5132 RH |
3057 | demand_empty_rest_of_line (); |
3058 | } | |
3059 | ||
3060 | /* Handle the .purgem pseudo-op. */ | |
3061 | ||
3062 | void | |
39e6acbd | 3063 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3064 | { |
3065 | if (is_it_end_of_statement ()) | |
3066 | { | |
3067 | demand_empty_rest_of_line (); | |
3068 | return; | |
3069 | } | |
3070 | ||
3071 | do | |
3072 | { | |
3073 | char *name; | |
3074 | char c; | |
3075 | ||
3076 | SKIP_WHITESPACE (); | |
d02603dc | 3077 | c = get_symbol_name (& name); |
252b5132 RH |
3078 | delete_macro (name); |
3079 | *input_line_pointer = c; | |
d02603dc | 3080 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
3081 | } |
3082 | while (*input_line_pointer++ == ','); | |
3083 | ||
3084 | --input_line_pointer; | |
3085 | demand_empty_rest_of_line (); | |
3086 | } | |
3087 | ||
057f53c1 | 3088 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 3089 | |
057f53c1 JB |
3090 | static void |
3091 | s_bad_end (int endr) | |
7f28ab9d | 3092 | { |
cc643b88 | 3093 | as_warn (_(".end%c encountered without preceding %s"), |
057f53c1 JB |
3094 | endr ? 'r' : 'm', |
3095 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
3096 | demand_empty_rest_of_line (); |
3097 | } | |
3098 | ||
3099 | /* Handle the .rept pseudo-op. */ | |
3100 | ||
252b5132 | 3101 | void |
39e6acbd | 3102 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3103 | { |
808811a3 | 3104 | size_t count; |
252b5132 | 3105 | |
808811a3 | 3106 | count = (size_t) get_absolute_expression (); |
252b5132 | 3107 | |
041ff4dd | 3108 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
3109 | } |
3110 | ||
3111 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 3112 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
3113 | |
3114 | void | |
808811a3 | 3115 | do_repeat (size_t count, const char *start, const char *end) |
6dc19fc4 TW |
3116 | { |
3117 | sb one; | |
3118 | sb many; | |
3119 | ||
808811a3 NC |
3120 | if (((ssize_t) count) < 0) |
3121 | { | |
3122 | as_bad (_("negative count for %s - ignored"), start); | |
3123 | count = 0; | |
3124 | } | |
3125 | ||
252b5132 | 3126 | sb_new (&one); |
7592cfd7 | 3127 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 3128 | { |
6dc19fc4 | 3129 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
3130 | return; |
3131 | } | |
3132 | ||
d2ae702c | 3133 | sb_build (&many, count * one.len); |
252b5132 RH |
3134 | while (count-- > 0) |
3135 | sb_add_sb (&many, &one); | |
3136 | ||
3137 | sb_kill (&one); | |
3138 | ||
9f10757c | 3139 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
3140 | sb_kill (&many); |
3141 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3142 | } | |
3143 | ||
c7927a3c | 3144 | /* Like do_repeat except that any text matching EXPANDER in the |
33eaf5de | 3145 | block is replaced by the iteration count. */ |
c7927a3c NC |
3146 | |
3147 | void | |
808811a3 | 3148 | do_repeat_with_expander (size_t count, |
c7927a3c NC |
3149 | const char * start, |
3150 | const char * end, | |
3151 | const char * expander) | |
3152 | { | |
3153 | sb one; | |
3154 | sb many; | |
3155 | ||
808811a3 NC |
3156 | if (((ssize_t) count) < 0) |
3157 | { | |
3158 | as_bad (_("negative count for %s - ignored"), start); | |
3159 | count = 0; | |
3160 | } | |
3161 | ||
c7927a3c NC |
3162 | sb_new (&one); |
3163 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3164 | { | |
3165 | as_bad (_("%s without %s"), start, end); | |
3166 | return; | |
3167 | } | |
3168 | ||
3169 | sb_new (&many); | |
3170 | ||
3171 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3172 | { | |
3173 | while (count -- > 0) | |
3174 | { | |
3175 | int len; | |
3176 | char * sub; | |
3177 | sb processed; | |
3178 | ||
d2ae702c | 3179 | sb_build (& processed, one.len); |
c7927a3c NC |
3180 | sb_add_sb (& processed, & one); |
3181 | sub = strstr (processed.ptr, expander); | |
808811a3 | 3182 | len = sprintf (sub, "%lu", (unsigned long) count); |
c7927a3c | 3183 | gas_assert (len < 8); |
9dcbfff1 AS |
3184 | memmove (sub + len, sub + 8, |
3185 | processed.ptr + processed.len - (sub + 8)); | |
c7927a3c NC |
3186 | processed.len -= (8 - len); |
3187 | sb_add_sb (& many, & processed); | |
3188 | sb_kill (& processed); | |
3189 | } | |
3190 | } | |
3191 | else | |
3192 | while (count-- > 0) | |
3193 | sb_add_sb (&many, &one); | |
3194 | ||
3195 | sb_kill (&one); | |
3196 | ||
3197 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3198 | sb_kill (&many); | |
3199 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3200 | } | |
3201 | ||
6dc19fc4 TW |
3202 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3203 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3204 | are properly nested. |
6dc19fc4 TW |
3205 | |
3206 | This function makes it easier to implement a premature "break" out of the | |
3207 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3208 | such as line substitutions. */ |
6dc19fc4 TW |
3209 | |
3210 | void | |
39e6acbd | 3211 | end_repeat (int extra) |
6dc19fc4 TW |
3212 | { |
3213 | cond_exit_macro (macro_nest); | |
3214 | while (extra-- >= 0) | |
3215 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3216 | } | |
3217 | ||
be95a9c1 | 3218 | static void |
9497f5ac | 3219 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3220 | { |
3221 | symbolS *symbolP; | |
3222 | ||
3223 | if (name[0] == '.' && name[1] == '\0') | |
3224 | { | |
3225 | /* Turn '. = mumble' into a .org mumble. */ | |
3226 | segT segment; | |
3227 | expressionS exp; | |
3228 | ||
3229 | segment = get_known_segmented_expression (&exp); | |
3230 | ||
3231 | if (!need_pass_2) | |
3232 | do_org (segment, &exp, 0); | |
3233 | ||
3234 | return; | |
3235 | } | |
3236 | ||
3237 | if ((symbolP = symbol_find (name)) == NULL | |
3238 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3239 | { | |
3240 | symbolP = symbol_find_or_make (name); | |
3241 | #ifndef NO_LISTING | |
3242 | /* When doing symbol listings, play games with dummy fragments living | |
3243 | outside the normal fragment chain to record the file and line info | |
3244 | for this symbol. */ | |
3245 | if (listing & LISTING_SYMBOLS) | |
3246 | { | |
3247 | extern struct list_info_struct *listing_tail; | |
8860a416 | 3248 | fragS *dummy_frag = XCNEW (fragS); |
be95a9c1 AM |
3249 | dummy_frag->line = listing_tail; |
3250 | dummy_frag->fr_symbol = symbolP; | |
3251 | symbol_set_frag (symbolP, dummy_frag); | |
3252 | } | |
3253 | #endif | |
76bd66cf | 3254 | #if defined (OBJ_COFF) && !defined (TE_PE) |
31d20a21 AM |
3255 | /* "set" symbols are local unless otherwise specified. */ |
3256 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3257 | #endif |
3258 | } | |
3259 | ||
6a2b6326 | 3260 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac | 3261 | { |
9497f5ac | 3262 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) |
6885131b | 3263 | && !S_CAN_BE_REDEFINED (symbolP)) |
9497f5ac NC |
3264 | { |
3265 | as_bad (_("symbol `%s' is already defined"), name); | |
62bd6b5f AM |
3266 | ignore_rest_of_line (); |
3267 | input_line_pointer--; | |
3268 | return; | |
9497f5ac NC |
3269 | } |
3270 | /* If the symbol is volatile, copy the symbol and replace the | |
3271 | original with the copy, so that previous uses of the symbol will | |
3272 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3273 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3274 | symbolP = symbol_clone (symbolP, 1); |
3275 | } | |
3276 | ||
3277 | if (mode == 0) | |
3278 | S_SET_VOLATILE (symbolP); | |
3279 | else if (mode < 0) | |
3280 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3281 | |
3282 | pseudo_set (symbolP); | |
be95a9c1 AM |
3283 | } |
3284 | ||
9497f5ac NC |
3285 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3286 | then this is .equiv, and it is an error if the symbol is already | |
3287 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3288 | reference. */ | |
252b5132 | 3289 | |
041ff4dd | 3290 | void |
39e6acbd | 3291 | s_set (int equiv) |
252b5132 | 3292 | { |
be95a9c1 | 3293 | char *name; |
252b5132 | 3294 | |
041ff4dd NC |
3295 | /* Especial apologies for the random logic: |
3296 | this just grew, and could be parsed much more simply! | |
3297 | Dean in haste. */ | |
7bfd842d NC |
3298 | if ((name = read_symbol_name ()) == NULL) |
3299 | return; | |
252b5132 RH |
3300 | |
3301 | if (*input_line_pointer != ',') | |
3302 | { | |
0e389e77 | 3303 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 | 3304 | ignore_rest_of_line (); |
7bfd842d | 3305 | free (name); |
252b5132 RH |
3306 | return; |
3307 | } | |
3308 | ||
3309 | input_line_pointer++; | |
be95a9c1 | 3310 | assign_symbol (name, equiv); |
31d20a21 | 3311 | demand_empty_rest_of_line (); |
7bfd842d | 3312 | free (name); |
041ff4dd | 3313 | } |
252b5132 | 3314 | |
041ff4dd | 3315 | void |
39e6acbd | 3316 | s_space (int mult) |
252b5132 RH |
3317 | { |
3318 | expressionS exp; | |
3319 | expressionS val; | |
3320 | char *p = 0; | |
3321 | char *stop = NULL; | |
fb25138b | 3322 | char stopc = 0; |
252b5132 RH |
3323 | int bytes; |
3324 | ||
3325 | #ifdef md_flush_pending_output | |
3326 | md_flush_pending_output (); | |
3327 | #endif | |
3328 | ||
cc3f603a JM |
3329 | #ifdef md_cons_align |
3330 | md_cons_align (1); | |
3331 | #endif | |
3332 | ||
252b5132 RH |
3333 | if (flag_mri) |
3334 | stop = mri_comment_field (&stopc); | |
3335 | ||
3336 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3337 | this is ds.b. */ | |
3338 | if (flag_m68k_mri && mult > 1) | |
3339 | { | |
3340 | if (now_seg == absolute_section) | |
3341 | { | |
3342 | abs_section_offset += abs_section_offset & 1; | |
3343 | if (line_label != NULL) | |
3344 | S_SET_VALUE (line_label, abs_section_offset); | |
3345 | } | |
3346 | else if (mri_common_symbol != NULL) | |
3347 | { | |
91d6fa6a | 3348 | valueT mri_val; |
252b5132 | 3349 | |
91d6fa6a NC |
3350 | mri_val = S_GET_VALUE (mri_common_symbol); |
3351 | if ((mri_val & 1) != 0) | |
252b5132 | 3352 | { |
91d6fa6a | 3353 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3354 | if (line_label != NULL) |
3355 | { | |
2b47531b ILT |
3356 | expressionS *symexp; |
3357 | ||
3358 | symexp = symbol_get_value_expression (line_label); | |
3359 | know (symexp->X_op == O_symbol); | |
3360 | know (symexp->X_add_symbol == mri_common_symbol); | |
3361 | symexp->X_add_number += 1; | |
252b5132 RH |
3362 | } |
3363 | } | |
3364 | } | |
3365 | else | |
3366 | { | |
3367 | do_align (1, (char *) NULL, 0, 0); | |
3368 | if (line_label != NULL) | |
3369 | { | |
2b47531b | 3370 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3371 | S_SET_VALUE (line_label, frag_now_fix ()); |
3372 | } | |
3373 | } | |
3374 | } | |
3375 | ||
3376 | bytes = mult; | |
3377 | ||
3378 | expression (&exp); | |
3379 | ||
3380 | SKIP_WHITESPACE (); | |
3381 | if (*input_line_pointer == ',') | |
3382 | { | |
3383 | ++input_line_pointer; | |
3384 | expression (&val); | |
3385 | } | |
3386 | else | |
3387 | { | |
3388 | val.X_op = O_constant; | |
3389 | val.X_add_number = 0; | |
3390 | } | |
3391 | ||
ec9ab52c JB |
3392 | if ((val.X_op != O_constant |
3393 | || val.X_add_number < - 0x80 | |
3394 | || val.X_add_number > 0xff | |
3395 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3396 | && (now_seg != absolute_section && !in_bss ())) | |
252b5132 | 3397 | { |
9497f5ac | 3398 | resolve_expression (&exp); |
252b5132 | 3399 | if (exp.X_op != O_constant) |
0e389e77 | 3400 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3401 | else |
3402 | { | |
3403 | offsetT i; | |
3404 | ||
005304aa NC |
3405 | /* PR 20901: Check for excessive values. |
3406 | FIXME: 1<<10 is an arbitrary limit. Maybe use maxpagesize instead ? */ | |
3407 | if (exp.X_add_number < 0 || exp.X_add_number > (1 << 10)) | |
5eecd862 | 3408 | as_bad (_("size value for space directive too large: %lx"), |
005304aa NC |
3409 | (long) exp.X_add_number); |
3410 | else | |
3411 | { | |
3412 | if (mult == 0) | |
3413 | mult = 1; | |
3414 | bytes = mult * exp.X_add_number; | |
3415 | ||
3416 | for (i = 0; i < exp.X_add_number; i++) | |
3417 | emit_expr (&val, mult); | |
3418 | } | |
252b5132 RH |
3419 | } |
3420 | } | |
3421 | else | |
3422 | { | |
9497f5ac NC |
3423 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3424 | resolve_expression (&exp); | |
3425 | ||
252b5132 RH |
3426 | if (exp.X_op == O_constant) |
3427 | { | |
a4a151e6 | 3428 | offsetT repeat; |
252b5132 RH |
3429 | |
3430 | repeat = exp.X_add_number; | |
3431 | if (mult) | |
3432 | repeat *= mult; | |
3433 | bytes = repeat; | |
3434 | if (repeat <= 0) | |
3435 | { | |
2d150871 RO |
3436 | if (!flag_mri) |
3437 | as_warn (_(".space repeat count is zero, ignored")); | |
3438 | else if (repeat < 0) | |
252b5132 RH |
3439 | as_warn (_(".space repeat count is negative, ignored")); |
3440 | goto getout; | |
3441 | } | |
3442 | ||
3443 | /* If we are in the absolute section, just bump the offset. */ | |
3444 | if (now_seg == absolute_section) | |
3445 | { | |
ec9ab52c JB |
3446 | if (val.X_op != O_constant || val.X_add_number != 0) |
3447 | as_warn (_("ignoring fill value in absolute section")); | |
252b5132 RH |
3448 | abs_section_offset += repeat; |
3449 | goto getout; | |
3450 | } | |
3451 | ||
3452 | /* If we are secretly in an MRI common section, then | |
3453 | creating space just increases the size of the common | |
3454 | symbol. */ | |
3455 | if (mri_common_symbol != NULL) | |
3456 | { | |
3457 | S_SET_VALUE (mri_common_symbol, | |
3458 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3459 | goto getout; | |
3460 | } | |
3461 | ||
3462 | if (!need_pass_2) | |
3463 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3464 | (offsetT) repeat, (char *) 0); | |
3465 | } | |
3466 | else | |
3467 | { | |
3468 | if (now_seg == absolute_section) | |
3469 | { | |
3470 | as_bad (_("space allocation too complex in absolute section")); | |
3471 | subseg_set (text_section, 0); | |
3472 | } | |
f0e652b4 | 3473 | |
252b5132 RH |
3474 | if (mri_common_symbol != NULL) |
3475 | { | |
3476 | as_bad (_("space allocation too complex in common section")); | |
3477 | mri_common_symbol = NULL; | |
3478 | } | |
f0e652b4 | 3479 | |
252b5132 RH |
3480 | if (!need_pass_2) |
3481 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3482 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3483 | } | |
3484 | ||
ec9ab52c JB |
3485 | if ((val.X_op != O_constant || val.X_add_number != 0) && in_bss ()) |
3486 | as_warn (_("ignoring fill value in section `%s'"), | |
3487 | segment_name (now_seg)); | |
3488 | else if (p) | |
252b5132 RH |
3489 | *p = val.X_add_number; |
3490 | } | |
3491 | ||
3492 | getout: | |
3493 | ||
3494 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3495 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3496 | or dcb.b. */ | |
3497 | if (flag_mri && (bytes & 1) != 0) | |
3498 | mri_pending_align = 1; | |
3499 | ||
3500 | demand_empty_rest_of_line (); | |
3501 | ||
3502 | if (flag_mri) | |
3503 | mri_comment_end (stop, stopc); | |
3504 | } | |
3505 | ||
b1766e7c NC |
3506 | void |
3507 | s_nop (int ignore ATTRIBUTE_UNUSED) | |
3508 | { | |
058430b4 AM |
3509 | expressionS exp; |
3510 | fragS *start; | |
3511 | addressT start_off; | |
3512 | offsetT frag_off; | |
3513 | ||
b1766e7c NC |
3514 | #ifdef md_flush_pending_output |
3515 | md_flush_pending_output (); | |
3516 | #endif | |
3517 | ||
3518 | #ifdef md_cons_align | |
3519 | md_cons_align (1); | |
3520 | #endif | |
3521 | ||
3522 | SKIP_WHITESPACE (); | |
058430b4 | 3523 | expression (&exp); |
b1766e7c NC |
3524 | demand_empty_rest_of_line (); |
3525 | ||
058430b4 AM |
3526 | start = frag_now; |
3527 | start_off = frag_now_fix (); | |
3528 | do | |
3529 | { | |
b1766e7c | 3530 | #ifdef md_emit_single_noop |
058430b4 | 3531 | md_emit_single_noop; |
b1766e7c | 3532 | #else |
058430b4 | 3533 | char *nop; |
b1766e7c NC |
3534 | |
3535 | #ifndef md_single_noop_insn | |
3536 | #define md_single_noop_insn "nop" | |
3537 | #endif | |
058430b4 AM |
3538 | /* md_assemble might modify its argument, so |
3539 | we must pass it a string that is writable. */ | |
3540 | if (asprintf (&nop, "%s", md_single_noop_insn) < 0) | |
3541 | as_fatal ("%s", xstrerror (errno)); | |
b1766e7c | 3542 | |
058430b4 AM |
3543 | /* Some targets assume that they can update input_line_pointer |
3544 | inside md_assemble, and, worse, that they can leave it | |
3545 | assigned to the string pointer that was provided as an | |
3546 | argument. So preserve ilp here. */ | |
3547 | char *saved_ilp = input_line_pointer; | |
3548 | md_assemble (nop); | |
3549 | input_line_pointer = saved_ilp; | |
3550 | free (nop); | |
3551 | #endif | |
3552 | #ifdef md_flush_pending_output | |
3553 | md_flush_pending_output (); | |
b1766e7c | 3554 | #endif |
058430b4 AM |
3555 | } while (exp.X_op == O_constant |
3556 | && exp.X_add_number > 0 | |
3557 | && frag_offset_ignore_align_p (start, frag_now, &frag_off) | |
3558 | && frag_off + frag_now_fix () < start_off + exp.X_add_number); | |
b1766e7c NC |
3559 | } |
3560 | ||
62a02d25 | 3561 | void |
8f065d3b | 3562 | s_nops (int ignore ATTRIBUTE_UNUSED) |
62a02d25 L |
3563 | { |
3564 | expressionS exp; | |
3565 | expressionS val; | |
3566 | ||
3567 | #ifdef md_flush_pending_output | |
3568 | md_flush_pending_output (); | |
3569 | #endif | |
3570 | ||
3571 | #ifdef md_cons_align | |
3572 | md_cons_align (1); | |
3573 | #endif | |
3574 | ||
b1766e7c | 3575 | SKIP_WHITESPACE (); |
62a02d25 | 3576 | expression (&exp); |
b1766e7c NC |
3577 | /* Note - this expression is tested for an absolute value in |
3578 | write.c:relax_segment(). */ | |
62a02d25 | 3579 | |
b1766e7c | 3580 | SKIP_WHITESPACE (); |
62a02d25 L |
3581 | if (*input_line_pointer == ',') |
3582 | { | |
3583 | ++input_line_pointer; | |
3584 | expression (&val); | |
3585 | } | |
3586 | else | |
3587 | { | |
3588 | val.X_op = O_constant; | |
3589 | val.X_add_number = 0; | |
3590 | } | |
3591 | ||
b1766e7c | 3592 | if (val.X_op != O_constant) |
62a02d25 | 3593 | { |
b1766e7c NC |
3594 | as_bad (_("unsupported variable nop control in .nops directive")); |
3595 | val.X_op = O_constant; | |
3596 | val.X_add_number = 0; | |
3597 | } | |
3598 | else if (val.X_add_number < 0) | |
3599 | { | |
3600 | as_warn (_("negative nop control byte, ignored")); | |
3601 | val.X_add_number = 0; | |
62a02d25 | 3602 | } |
62a02d25 L |
3603 | |
3604 | demand_empty_rest_of_line (); | |
b1766e7c NC |
3605 | |
3606 | if (need_pass_2) | |
3607 | /* Ignore this directive if we are going to perform a second pass. */ | |
3608 | return; | |
3609 | ||
3610 | /* Store the no-op instruction control byte in the first byte of frag. */ | |
3611 | char *p; | |
3612 | symbolS *sym = make_expr_symbol (&exp); | |
3613 | p = frag_var (rs_space_nop, 1, 1, (relax_substateT) 0, | |
3614 | sym, (offsetT) 0, (char *) 0); | |
3615 | *p = val.X_add_number; | |
62a02d25 L |
3616 | } |
3617 | ||
252b5132 RH |
3618 | /* This is like s_space, but the value is a floating point number with |
3619 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3620 | friends. */ | |
3621 | ||
3622 | void | |
39e6acbd | 3623 | s_float_space (int float_type) |
252b5132 RH |
3624 | { |
3625 | offsetT count; | |
3626 | int flen; | |
3627 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3628 | char *stop = NULL; | |
fb25138b | 3629 | char stopc = 0; |
252b5132 | 3630 | |
cc3f603a JM |
3631 | #ifdef md_cons_align |
3632 | md_cons_align (1); | |
3633 | #endif | |
3634 | ||
252b5132 RH |
3635 | if (flag_mri) |
3636 | stop = mri_comment_field (&stopc); | |
3637 | ||
3638 | count = get_absolute_expression (); | |
3639 | ||
3640 | SKIP_WHITESPACE (); | |
3641 | if (*input_line_pointer != ',') | |
3642 | { | |
3643 | as_bad (_("missing value")); | |
3644 | ignore_rest_of_line (); | |
3645 | if (flag_mri) | |
3646 | mri_comment_end (stop, stopc); | |
3647 | return; | |
3648 | } | |
3649 | ||
3650 | ++input_line_pointer; | |
3651 | ||
3652 | SKIP_WHITESPACE (); | |
3653 | ||
3654 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3655 | * letter is legal. */ | |
3656 | if (input_line_pointer[0] == '0' | |
3882b010 | 3657 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3658 | input_line_pointer += 2; |
3659 | ||
3660 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3661 | with the exact digits specified. */ | |
3662 | if (input_line_pointer[0] == ':') | |
3663 | { | |
3664 | flen = hex_float (float_type, temp); | |
3665 | if (flen < 0) | |
3666 | { | |
3667 | ignore_rest_of_line (); | |
3668 | if (flag_mri) | |
3669 | mri_comment_end (stop, stopc); | |
3670 | return; | |
3671 | } | |
3672 | } | |
3673 | else | |
3674 | { | |
6d4af3c2 | 3675 | const char *err; |
252b5132 RH |
3676 | |
3677 | err = md_atof (float_type, temp, &flen); | |
3678 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3679 | know (err != NULL || flen > 0); |
252b5132 RH |
3680 | if (err) |
3681 | { | |
0e389e77 | 3682 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3683 | ignore_rest_of_line (); |
3684 | if (flag_mri) | |
3685 | mri_comment_end (stop, stopc); | |
3686 | return; | |
3687 | } | |
3688 | } | |
3689 | ||
3690 | while (--count >= 0) | |
3691 | { | |
3692 | char *p; | |
3693 | ||
3694 | p = frag_more (flen); | |
3695 | memcpy (p, temp, (unsigned int) flen); | |
3696 | } | |
3697 | ||
3698 | demand_empty_rest_of_line (); | |
3699 | ||
3700 | if (flag_mri) | |
3701 | mri_comment_end (stop, stopc); | |
3702 | } | |
3703 | ||
3704 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3705 | ||
3706 | void | |
39e6acbd | 3707 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3708 | { |
3709 | char *stop = NULL; | |
fb25138b | 3710 | char stopc = 0; |
252b5132 RH |
3711 | |
3712 | if (flag_mri) | |
3713 | stop = mri_comment_field (&stopc); | |
3714 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3715 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3716 | /* The ELF backend needs to know that we are changing sections, so | |
3717 | that .previous works correctly. */ | |
f43abd2b | 3718 | if (IS_ELF) |
a2902af6 TS |
3719 | obj_elf_section_change_hook (); |
3720 | #endif | |
252b5132 RH |
3721 | subseg_set (absolute_section, 0); |
3722 | demand_empty_rest_of_line (); | |
3723 | if (flag_mri) | |
3724 | mri_comment_end (stop, stopc); | |
3725 | } | |
3726 | ||
3727 | void | |
39e6acbd | 3728 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3729 | { |
3d540e93 | 3730 | int temp; |
252b5132 RH |
3731 | |
3732 | temp = get_absolute_expression (); | |
3733 | subseg_set (text_section, (subsegT) temp); | |
3734 | demand_empty_rest_of_line (); | |
041ff4dd | 3735 | } |
06e77878 AO |
3736 | |
3737 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3738 | referenced directly, will cause y to become a weak symbol. */ | |
3739 | void | |
3740 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3741 | { | |
3742 | char *name; | |
06e77878 AO |
3743 | symbolS *symbolP; |
3744 | symbolS *symbolP2; | |
3745 | expressionS exp; | |
3746 | ||
7bfd842d NC |
3747 | if ((name = read_symbol_name ()) == NULL) |
3748 | return; | |
06e77878 AO |
3749 | |
3750 | symbolP = symbol_find_or_make (name); | |
3751 | ||
b54788f8 AO |
3752 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3753 | { | |
89cdfe57 | 3754 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3755 | { |
3756 | as_bad (_("symbol `%s' is already defined"), name); | |
7bfd842d | 3757 | goto err_out; |
92757bc9 | 3758 | } |
89cdfe57 | 3759 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3760 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3761 | } |
3762 | ||
06e77878 AO |
3763 | SKIP_WHITESPACE (); |
3764 | ||
3765 | if (*input_line_pointer != ',') | |
3766 | { | |
06e77878 | 3767 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 3768 | goto err_out; |
06e77878 AO |
3769 | } |
3770 | ||
3771 | input_line_pointer++; | |
3772 | ||
3773 | SKIP_WHITESPACE (); | |
7bfd842d | 3774 | free (name); |
06e77878 | 3775 | |
7bfd842d NC |
3776 | if ((name = read_symbol_name ()) == NULL) |
3777 | return; | |
06e77878 AO |
3778 | |
3779 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3780 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3781 | { | |
3782 | symbolP2 = symbol_find_or_make (name); | |
3783 | S_SET_WEAKREFD (symbolP2); | |
3784 | } | |
3785 | else | |
3786 | { | |
3787 | symbolS *symp = symbolP2; | |
3788 | ||
3789 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3790 | { | |
3791 | expressionS *expP = symbol_get_value_expression (symp); | |
3792 | ||
9c2799c2 | 3793 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3794 | && expP->X_add_number == 0); |
3795 | symp = expP->X_add_symbol; | |
3796 | } | |
3797 | if (symp == symbolP) | |
3798 | { | |
3799 | char *loop; | |
3800 | ||
3801 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3802 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3803 | |
3804 | symp = symbolP2; | |
3805 | while (symp != symbolP) | |
3806 | { | |
3807 | char *old_loop = loop; | |
7bfd842d | 3808 | |
06e77878 | 3809 | symp = symbol_get_value_expression (symp)->X_add_symbol; |
1bf57e9f AM |
3810 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3811 | (const char *) NULL); | |
06e77878 AO |
3812 | free (old_loop); |
3813 | } | |
3814 | ||
3815 | as_bad (_("%s: would close weakref loop: %s"), | |
3816 | S_GET_NAME (symbolP), loop); | |
3817 | ||
3818 | free (loop); | |
7bfd842d | 3819 | free (name); |
06e77878 AO |
3820 | ignore_rest_of_line (); |
3821 | return; | |
3822 | } | |
3823 | ||
3824 | /* Short-circuiting instead of just checking here might speed | |
3825 | things up a tiny little bit, but loop error messages would | |
3826 | miss intermediate links. */ | |
3827 | /* symbolP2 = symp; */ | |
3828 | } | |
3829 | ||
06e77878 AO |
3830 | memset (&exp, 0, sizeof (exp)); |
3831 | exp.X_op = O_symbol; | |
3832 | exp.X_add_symbol = symbolP2; | |
3833 | ||
3834 | S_SET_SEGMENT (symbolP, undefined_section); | |
3835 | symbol_set_value_expression (symbolP, &exp); | |
3836 | symbol_set_frag (symbolP, &zero_address_frag); | |
3837 | S_SET_WEAKREFR (symbolP); | |
3838 | ||
3839 | demand_empty_rest_of_line (); | |
7bfd842d NC |
3840 | free (name); |
3841 | return; | |
3842 | ||
3843 | err_out: | |
3844 | ignore_rest_of_line (); | |
3845 | free (name); | |
3846 | return; | |
06e77878 | 3847 | } |
252b5132 | 3848 | \f |
c95b35a9 NS |
3849 | |
3850 | /* Verify that we are at the end of a line. If not, issue an error and | |
3851 | skip to EOL. */ | |
3852 | ||
041ff4dd | 3853 | void |
39e6acbd | 3854 | demand_empty_rest_of_line (void) |
252b5132 RH |
3855 | { |
3856 | SKIP_WHITESPACE (); | |
3857 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3858 | input_line_pointer++; |
252b5132 | 3859 | else |
252b5132 | 3860 | { |
3882b010 | 3861 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3862 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3863 | *input_line_pointer); |
252b5132 | 3864 | else |
c95b35a9 | 3865 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3866 | *input_line_pointer); |
c95b35a9 | 3867 | ignore_rest_of_line (); |
252b5132 | 3868 | } |
fa94de6b | 3869 | |
c95b35a9 NS |
3870 | /* Return pointing just after end-of-line. */ |
3871 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3872 | } | |
3873 | ||
3874 | /* Silently advance to the end of line. Use this after already having | |
3875 | issued an error about something bad. */ | |
3876 | ||
3877 | void | |
3878 | ignore_rest_of_line (void) | |
3879 | { | |
3880 | while (input_line_pointer < buffer_limit | |
3881 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3882 | input_line_pointer++; | |
f0e652b4 | 3883 | |
041ff4dd NC |
3884 | input_line_pointer++; |
3885 | ||
3886 | /* Return pointing just after end-of-line. */ | |
3076e594 NC |
3887 | if (input_line_pointer <= buffer_limit) |
3888 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
252b5132 RH |
3889 | } |
3890 | ||
be95a9c1 AM |
3891 | /* Sets frag for given symbol to zero_address_frag, except when the |
3892 | symbol frag is already set to a dummy listing frag. */ | |
3893 | ||
3894 | static void | |
3895 | set_zero_frag (symbolS *symbolP) | |
3896 | { | |
3897 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3898 | symbol_set_frag (symbolP, &zero_address_frag); | |
3899 | } | |
3900 | ||
041ff4dd | 3901 | /* In: Pointer to a symbol. |
d6415f6c | 3902 | Input_line_pointer->expression. |
f0e652b4 | 3903 | |
041ff4dd | 3904 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3905 | Tried to set symbol to value of expression. |
3906 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3907 | |
252b5132 | 3908 | void |
39e6acbd | 3909 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3910 | { |
3911 | expressionS exp; | |
be95a9c1 | 3912 | segT seg; |
252b5132 | 3913 | |
041ff4dd | 3914 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3915 | |
9497f5ac NC |
3916 | if (!S_IS_FORWARD_REF (symbolP)) |
3917 | (void) expression (&exp); | |
3918 | else | |
3919 | (void) deferred_expression (&exp); | |
252b5132 RH |
3920 | |
3921 | if (exp.X_op == O_illegal) | |
0e389e77 | 3922 | as_bad (_("illegal expression")); |
252b5132 | 3923 | else if (exp.X_op == O_absent) |
0e389e77 | 3924 | as_bad (_("missing expression")); |
252b5132 RH |
3925 | else if (exp.X_op == O_big) |
3926 | { | |
3927 | if (exp.X_add_number > 0) | |
0e389e77 | 3928 | as_bad (_("bignum invalid")); |
252b5132 | 3929 | else |
0e389e77 | 3930 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3931 | } |
3932 | else if (exp.X_op == O_subtract | |
9497f5ac | 3933 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3934 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3935 | && (symbol_get_frag (exp.X_add_symbol) |
3936 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3937 | { |
3938 | exp.X_op = O_constant; | |
3939 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3940 | - S_GET_VALUE (exp.X_op_symbol)); | |
3941 | } | |
3942 | ||
be95a9c1 AM |
3943 | if (symbol_section_p (symbolP)) |
3944 | { | |
3945 | as_bad ("attempt to set value of section symbol"); | |
3946 | return; | |
3947 | } | |
be95a9c1 | 3948 | |
252b5132 RH |
3949 | switch (exp.X_op) |
3950 | { | |
3951 | case O_illegal: | |
3952 | case O_absent: | |
3953 | case O_big: | |
3954 | exp.X_add_number = 0; | |
3955 | /* Fall through. */ | |
3956 | case O_constant: | |
3957 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3958 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3959 | set_zero_frag (symbolP); |
252b5132 RH |
3960 | break; |
3961 | ||
3962 | case O_register: | |
97c4f2d9 | 3963 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3964 | if (S_IS_EXTERNAL (symbolP)) |
3965 | { | |
3966 | as_bad ("can't equate global symbol `%s' with register name", | |
3967 | S_GET_NAME (symbolP)); | |
3968 | return; | |
3969 | } | |
97c4f2d9 | 3970 | #endif |
252b5132 RH |
3971 | S_SET_SEGMENT (symbolP, reg_section); |
3972 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3973 | set_zero_frag (symbolP); |
db557034 | 3974 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3975 | break; |
3976 | ||
3977 | case O_symbol: | |
be95a9c1 AM |
3978 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3979 | /* For x=undef+const, create an expression symbol. | |
3980 | For x=x+const, just update x except when x is an undefined symbol | |
3981 | For x=defined+const, evaluate x. */ | |
3982 | if (symbolP == exp.X_add_symbol | |
3983 | && (seg != undefined_section | |
3984 | || !symbol_constant_p (symbolP))) | |
3985 | { | |
3986 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3987 | break; | |
3988 | } | |
9497f5ac | 3989 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3990 | { |
3991 | symbolS *s = exp.X_add_symbol; | |
3992 | ||
60938e80 | 3993 | if (S_IS_COMMON (s)) |
76db0a2e | 3994 | as_bad (_("`%s' can't be equated to common symbol `%s'"), |
60938e80 L |
3995 | S_GET_NAME (symbolP), S_GET_NAME (s)); |
3996 | ||
be95a9c1 AM |
3997 | S_SET_SEGMENT (symbolP, seg); |
3998 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3999 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 4000 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 4001 | break; |
252b5132 | 4002 | } |
66bd02d3 AM |
4003 | S_SET_SEGMENT (symbolP, undefined_section); |
4004 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 4005 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
4006 | set_zero_frag (symbolP); |
4007 | break; | |
252b5132 RH |
4008 | |
4009 | default: | |
aba4aa7d AM |
4010 | /* The value is some complex expression. */ |
4011 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 4012 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 4013 | set_zero_frag (symbolP); |
252b5132 RH |
4014 | break; |
4015 | } | |
4016 | } | |
4017 | \f | |
d6415f6c | 4018 | /* cons() |
f0e652b4 | 4019 | |
041ff4dd NC |
4020 | CONStruct more frag of .bytes, or .words etc. |
4021 | Should need_pass_2 be 1 then emit no frag(s). | |
4022 | This understands EXPRESSIONS. | |
f0e652b4 | 4023 | |
041ff4dd | 4024 | Bug (?) |
f0e652b4 | 4025 | |
041ff4dd NC |
4026 | This has a split personality. We use expression() to read the |
4027 | value. We can detect if the value won't fit in a byte or word. | |
4028 | But we can't detect if expression() discarded significant digits | |
4029 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
4030 | |
4031 | /* Select a parser for cons expressions. */ | |
4032 | ||
4033 | /* Some targets need to parse the expression in various fancy ways. | |
4034 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
4035 | (for example, the HPPA does this). Otherwise, you can define | |
252b5132 RH |
4036 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these |
4037 | are defined, which is the normal case, then only simple expressions | |
4038 | are permitted. */ | |
4039 | ||
abd63a32 | 4040 | #ifdef TC_M68K |
252b5132 | 4041 | static void |
39e6acbd | 4042 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 4043 | #endif |
252b5132 RH |
4044 | |
4045 | #ifndef TC_PARSE_CONS_EXPRESSION | |
252b5132 | 4046 | #ifdef REPEAT_CONS_EXPRESSIONS |
62ebcb5c AM |
4047 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
4048 | (parse_repeat_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 | 4049 | static void |
39e6acbd | 4050 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
4051 | #endif |
4052 | ||
4053 | /* If we haven't gotten one yet, just call expression. */ | |
4054 | #ifndef TC_PARSE_CONS_EXPRESSION | |
62ebcb5c AM |
4055 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
4056 | (expression (EXP), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 RH |
4057 | #endif |
4058 | #endif | |
4059 | ||
cdfbf930 | 4060 | void |
b41b1f95 L |
4061 | do_parse_cons_expression (expressionS *exp, |
4062 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 | 4063 | { |
62ebcb5c | 4064 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
cdfbf930 RH |
4065 | } |
4066 | ||
4067 | ||
041ff4dd NC |
4068 | /* Worker to do .byte etc statements. |
4069 | Clobbers input_line_pointer and checks end-of-line. */ | |
4070 | ||
4071 | static void | |
3d540e93 | 4072 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 4073 | int rva) |
252b5132 RH |
4074 | { |
4075 | int c; | |
4076 | expressionS exp; | |
4077 | char *stop = NULL; | |
fb25138b | 4078 | char stopc = 0; |
252b5132 RH |
4079 | |
4080 | #ifdef md_flush_pending_output | |
4081 | md_flush_pending_output (); | |
4082 | #endif | |
4083 | ||
4084 | if (flag_mri) | |
4085 | stop = mri_comment_field (&stopc); | |
4086 | ||
4087 | if (is_it_end_of_statement ()) | |
4088 | { | |
4089 | demand_empty_rest_of_line (); | |
4090 | if (flag_mri) | |
4091 | mri_comment_end (stop, stopc); | |
4092 | return; | |
4093 | } | |
4094 | ||
cc1bc22a AM |
4095 | #ifdef TC_ADDRESS_BYTES |
4096 | if (nbytes == 0) | |
4097 | nbytes = TC_ADDRESS_BYTES (); | |
4098 | #endif | |
4099 | ||
252b5132 RH |
4100 | #ifdef md_cons_align |
4101 | md_cons_align (nbytes); | |
4102 | #endif | |
4103 | ||
4104 | c = 0; | |
4105 | do | |
4106 | { | |
62ebcb5c | 4107 | TC_PARSE_CONS_RETURN_TYPE ret = TC_PARSE_CONS_RETURN_NONE; |
bf7279d5 AM |
4108 | #ifdef TC_CONS_FIX_CHECK |
4109 | fixS **cur_fix = &frchain_now->fix_tail; | |
4110 | ||
4111 | if (*cur_fix != NULL) | |
4112 | cur_fix = &(*cur_fix)->fx_next; | |
4113 | #endif | |
62ebcb5c | 4114 | |
abd63a32 | 4115 | #ifdef TC_M68K |
252b5132 RH |
4116 | if (flag_m68k_mri) |
4117 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
4118 | else | |
abd63a32 | 4119 | #endif |
fa94de6b | 4120 | { |
d02603dc | 4121 | #if 0 |
847d4311 NS |
4122 | if (*input_line_pointer == '"') |
4123 | { | |
4124 | as_bad (_("unexpected `\"' in expression")); | |
4125 | ignore_rest_of_line (); | |
4126 | return; | |
4127 | } | |
d02603dc | 4128 | #endif |
62ebcb5c | 4129 | ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
847d4311 | 4130 | } |
252b5132 RH |
4131 | |
4132 | if (rva) | |
4133 | { | |
4134 | if (exp.X_op == O_symbol) | |
4135 | exp.X_op = O_symbol_rva; | |
4136 | else | |
4137 | as_fatal (_("rva without symbol")); | |
4138 | } | |
62ebcb5c | 4139 | emit_expr_with_reloc (&exp, (unsigned int) nbytes, ret); |
bf7279d5 AM |
4140 | #ifdef TC_CONS_FIX_CHECK |
4141 | TC_CONS_FIX_CHECK (&exp, nbytes, *cur_fix); | |
4142 | #endif | |
252b5132 RH |
4143 | ++c; |
4144 | } | |
4145 | while (*input_line_pointer++ == ','); | |
4146 | ||
4147 | /* In MRI mode, after an odd number of bytes, we must align to an | |
4148 | even word boundary, unless the next instruction is a dc.b, ds.b | |
4149 | or dcb.b. */ | |
4150 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
4151 | mri_pending_align = 1; | |
4152 | ||
041ff4dd | 4153 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
4154 | |
4155 | demand_empty_rest_of_line (); | |
4156 | ||
4157 | if (flag_mri) | |
4158 | mri_comment_end (stop, stopc); | |
4159 | } | |
4160 | ||
252b5132 | 4161 | void |
39e6acbd | 4162 | cons (int size) |
252b5132 RH |
4163 | { |
4164 | cons_worker (size, 0); | |
4165 | } | |
4166 | ||
041ff4dd | 4167 | void |
39e6acbd | 4168 | s_rva (int size) |
252b5132 RH |
4169 | { |
4170 | cons_worker (size, 1); | |
4171 | } | |
4172 | ||
05e9452c AM |
4173 | /* .reloc offset, reloc_name, symbol+addend. */ |
4174 | ||
b38ead21 | 4175 | static void |
05e9452c AM |
4176 | s_reloc (int ignore ATTRIBUTE_UNUSED) |
4177 | { | |
4178 | char *stop = NULL; | |
4179 | char stopc = 0; | |
4180 | expressionS exp; | |
4181 | char *r_name; | |
4182 | int c; | |
4183 | struct reloc_list *reloc; | |
cd0bbe6e TS |
4184 | struct _bfd_rel { const char * name; bfd_reloc_code_real_type code; }; |
4185 | static struct _bfd_rel bfd_relocs[] = | |
4186 | { | |
740bdc67 | 4187 | { "NONE", BFD_RELOC_NONE }, |
cd0bbe6e | 4188 | { "8", BFD_RELOC_8 }, |
740bdc67 AM |
4189 | { "16", BFD_RELOC_16 }, |
4190 | { "32", BFD_RELOC_32 }, | |
4191 | { "64", BFD_RELOC_64 } | |
4192 | }; | |
05e9452c | 4193 | |
8860a416 | 4194 | reloc = XNEW (struct reloc_list); |
05e9452c AM |
4195 | |
4196 | if (flag_mri) | |
4197 | stop = mri_comment_field (&stopc); | |
4198 | ||
4199 | expression (&exp); | |
4200 | switch (exp.X_op) | |
4201 | { | |
4202 | case O_illegal: | |
4203 | case O_absent: | |
4204 | case O_big: | |
4205 | case O_register: | |
4206 | as_bad (_("missing or bad offset expression")); | |
4207 | goto err_out; | |
4208 | case O_constant: | |
4209 | exp.X_add_symbol = section_symbol (now_seg); | |
4210 | exp.X_op = O_symbol; | |
2b0f3761 | 4211 | /* Fallthru */ |
05e9452c AM |
4212 | case O_symbol: |
4213 | if (exp.X_add_number == 0) | |
4214 | { | |
4215 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
4216 | break; | |
4217 | } | |
2b0f3761 | 4218 | /* Fallthru */ |
05e9452c AM |
4219 | default: |
4220 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
4221 | break; | |
4222 | } | |
4223 | ||
4224 | SKIP_WHITESPACE (); | |
4225 | if (*input_line_pointer != ',') | |
4226 | { | |
4227 | as_bad (_("missing reloc type")); | |
4228 | goto err_out; | |
4229 | } | |
4230 | ||
4231 | ++input_line_pointer; | |
4232 | SKIP_WHITESPACE (); | |
d02603dc | 4233 | c = get_symbol_name (& r_name); |
740bdc67 AM |
4234 | if (strncasecmp (r_name, "BFD_RELOC_", 10) == 0) |
4235 | { | |
4236 | unsigned int i; | |
4237 | ||
4238 | for (reloc->u.a.howto = NULL, i = 0; i < ARRAY_SIZE (bfd_relocs); i++) | |
4239 | if (strcasecmp (r_name + 10, bfd_relocs[i].name) == 0) | |
4240 | { | |
4241 | reloc->u.a.howto = bfd_reloc_type_lookup (stdoutput, | |
4242 | bfd_relocs[i].code); | |
4243 | break; | |
4244 | } | |
4245 | } | |
4246 | else | |
4247 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
05e9452c AM |
4248 | *input_line_pointer = c; |
4249 | if (reloc->u.a.howto == NULL) | |
4250 | { | |
4251 | as_bad (_("unrecognized reloc type")); | |
4252 | goto err_out; | |
4253 | } | |
4254 | ||
4255 | exp.X_op = O_absent; | |
d02603dc | 4256 | SKIP_WHITESPACE_AFTER_NAME (); |
05e9452c AM |
4257 | if (*input_line_pointer == ',') |
4258 | { | |
4259 | ++input_line_pointer; | |
c188d0bb | 4260 | expression (&exp); |
05e9452c AM |
4261 | } |
4262 | switch (exp.X_op) | |
4263 | { | |
4264 | case O_illegal: | |
4265 | case O_big: | |
4266 | case O_register: | |
4267 | as_bad (_("bad reloc expression")); | |
4268 | err_out: | |
4269 | ignore_rest_of_line (); | |
4270 | free (reloc); | |
4271 | if (flag_mri) | |
4272 | mri_comment_end (stop, stopc); | |
4273 | return; | |
4274 | case O_absent: | |
4275 | reloc->u.a.sym = NULL; | |
4276 | reloc->u.a.addend = 0; | |
4277 | break; | |
4278 | case O_constant: | |
4279 | reloc->u.a.sym = NULL; | |
4280 | reloc->u.a.addend = exp.X_add_number; | |
4281 | break; | |
4282 | case O_symbol: | |
4283 | reloc->u.a.sym = exp.X_add_symbol; | |
4284 | reloc->u.a.addend = exp.X_add_number; | |
4285 | break; | |
4286 | default: | |
4287 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4288 | reloc->u.a.addend = 0; | |
4289 | break; | |
4290 | } | |
4291 | ||
3b4dbbbf | 4292 | reloc->file = as_where (&reloc->line); |
05e9452c AM |
4293 | reloc->next = reloc_list; |
4294 | reloc_list = reloc; | |
4295 | ||
4296 | demand_empty_rest_of_line (); | |
4297 | if (flag_mri) | |
4298 | mri_comment_end (stop, stopc); | |
4299 | } | |
4300 | ||
252b5132 RH |
4301 | /* Put the contents of expression EXP into the object file using |
4302 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4303 | ||
4304 | void | |
39e6acbd | 4305 | emit_expr (expressionS *exp, unsigned int nbytes) |
62ebcb5c AM |
4306 | { |
4307 | emit_expr_with_reloc (exp, nbytes, TC_PARSE_CONS_RETURN_NONE); | |
4308 | } | |
4309 | ||
4310 | void | |
4311 | emit_expr_with_reloc (expressionS *exp, | |
4312 | unsigned int nbytes, | |
4313 | TC_PARSE_CONS_RETURN_TYPE reloc) | |
252b5132 RH |
4314 | { |
4315 | operatorT op; | |
3d540e93 | 4316 | char *p; |
252b5132 RH |
4317 | valueT extra_digit = 0; |
4318 | ||
4319 | /* Don't do anything if we are going to make another pass. */ | |
4320 | if (need_pass_2) | |
4321 | return; | |
4322 | ||
4bc25101 | 4323 | frag_grow (nbytes); |
ed7d5d1a | 4324 | dot_value = frag_now_fix (); |
8e723a10 | 4325 | dot_frag = frag_now; |
ed7d5d1a | 4326 | |
252b5132 RH |
4327 | #ifndef NO_LISTING |
4328 | #ifdef OBJ_ELF | |
4329 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4330 | appear as a four byte positive constant in the .line section, | |
4331 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4332 | { | |
4333 | static int dwarf_line = -1; | |
4334 | ||
4335 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4336 | dwarf_line = -1; | |
4337 | else if (dwarf_line >= 0 | |
4338 | && nbytes == 2 | |
4339 | && exp->X_op == O_constant | |
4340 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4341 | listing_source_line ((unsigned int) dwarf_line); | |
4342 | else if (nbytes == 4 | |
4343 | && exp->X_op == O_constant | |
4344 | && exp->X_add_number >= 0) | |
4345 | dwarf_line = exp->X_add_number; | |
4346 | else | |
4347 | dwarf_line = -1; | |
4348 | } | |
4349 | ||
4350 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4351 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4352 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4353 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4354 | file. We look for that case here. */ | |
4355 | { | |
4356 | static int dwarf_file = 0; | |
4357 | ||
4358 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4359 | dwarf_file = 0; | |
4360 | else if (dwarf_file == 0 | |
4361 | && nbytes == 2 | |
4362 | && exp->X_op == O_constant | |
4363 | && exp->X_add_number == 0x11) | |
4364 | dwarf_file = 1; | |
4365 | else if (dwarf_file == 1 | |
4366 | && nbytes == 2 | |
4367 | && exp->X_op == O_constant | |
4368 | && exp->X_add_number == 0x12) | |
4369 | dwarf_file = 2; | |
4370 | else if (dwarf_file == 2 | |
4371 | && nbytes == 4) | |
4372 | dwarf_file = 3; | |
4373 | else if (dwarf_file == 3 | |
4374 | && nbytes == 2 | |
4375 | && exp->X_op == O_constant | |
4376 | && exp->X_add_number == 0x38) | |
4377 | dwarf_file = 4; | |
4378 | else | |
4379 | dwarf_file = 0; | |
4380 | ||
4381 | /* The variable dwarf_file_string tells stringer that the string | |
4382 | may be the name of the source file. */ | |
4383 | if (dwarf_file == 4) | |
4384 | dwarf_file_string = 1; | |
4385 | else | |
4386 | dwarf_file_string = 0; | |
4387 | } | |
4388 | #endif | |
4389 | #endif | |
4390 | ||
4391 | if (check_eh_frame (exp, &nbytes)) | |
4392 | return; | |
4393 | ||
4394 | op = exp->X_op; | |
4395 | ||
252b5132 RH |
4396 | /* Handle a negative bignum. */ |
4397 | if (op == O_uminus | |
4398 | && exp->X_add_number == 0 | |
2b47531b ILT |
4399 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4400 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4401 | { |
4402 | int i; | |
4403 | unsigned long carry; | |
4404 | ||
2b47531b | 4405 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4406 | |
4407 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4408 | carry = 1; | |
4409 | for (i = 0; i < exp->X_add_number; i++) | |
4410 | { | |
4411 | unsigned long next; | |
4412 | ||
041ff4dd | 4413 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4414 | & LITTLENUM_MASK) |
4415 | + carry); | |
4416 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4417 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4418 | } | |
4419 | ||
4420 | /* We can ignore any carry out, because it will be handled by | |
4421 | extra_digit if it is needed. */ | |
4422 | ||
4423 | extra_digit = (valueT) -1; | |
4424 | op = O_big; | |
4425 | } | |
4426 | ||
4427 | if (op == O_absent || op == O_illegal) | |
4428 | { | |
4429 | as_warn (_("zero assumed for missing expression")); | |
4430 | exp->X_add_number = 0; | |
4431 | op = O_constant; | |
4432 | } | |
4433 | else if (op == O_big && exp->X_add_number <= 0) | |
4434 | { | |
0e389e77 | 4435 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4436 | exp->X_add_number = 0; |
4437 | op = O_constant; | |
4438 | } | |
4439 | else if (op == O_register) | |
4440 | { | |
4441 | as_warn (_("register value used as expression")); | |
4442 | op = O_constant; | |
4443 | } | |
4444 | ||
ec9ab52c JB |
4445 | /* Allow `.word 0' in the absolute section. */ |
4446 | if (now_seg == absolute_section) | |
4447 | { | |
4448 | if (op != O_constant || exp->X_add_number != 0) | |
4449 | as_bad (_("attempt to store value in absolute section")); | |
4450 | abs_section_offset += nbytes; | |
4451 | return; | |
4452 | } | |
4453 | ||
4454 | /* Allow `.word 0' in BSS style sections. */ | |
4455 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
4456 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
4457 | segment_name (now_seg)); | |
4458 | ||
252b5132 RH |
4459 | p = frag_more ((int) nbytes); |
4460 | ||
62ebcb5c AM |
4461 | if (reloc != TC_PARSE_CONS_RETURN_NONE) |
4462 | { | |
4463 | emit_expr_fix (exp, nbytes, frag_now, p, reloc); | |
4464 | return; | |
4465 | } | |
4466 | ||
252b5132 RH |
4467 | #ifndef WORKING_DOT_WORD |
4468 | /* If we have the difference of two symbols in a word, save it on | |
4469 | the broken_words list. See the code in write.c. */ | |
4470 | if (op == O_subtract && nbytes == 2) | |
4471 | { | |
4472 | struct broken_word *x; | |
4473 | ||
8860a416 | 4474 | x = XNEW (struct broken_word); |
252b5132 RH |
4475 | x->next_broken_word = broken_words; |
4476 | broken_words = x; | |
4477 | x->seg = now_seg; | |
4478 | x->subseg = now_subseg; | |
4479 | x->frag = frag_now; | |
4480 | x->word_goes_here = p; | |
4481 | x->dispfrag = 0; | |
4482 | x->add = exp->X_add_symbol; | |
4483 | x->sub = exp->X_op_symbol; | |
4484 | x->addnum = exp->X_add_number; | |
4485 | x->added = 0; | |
dc59a897 | 4486 | x->use_jump = 0; |
252b5132 RH |
4487 | new_broken_words++; |
4488 | return; | |
4489 | } | |
4490 | #endif | |
4491 | ||
4492 | /* If we have an integer, but the number of bytes is too large to | |
4493 | pass to md_number_to_chars, handle it as a bignum. */ | |
4494 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4495 | { | |
e5604d79 | 4496 | extra_digit = exp->X_unsigned ? 0 : -1; |
956a6ba3 | 4497 | convert_to_bignum (exp, !exp->X_unsigned); |
e5604d79 | 4498 | op = O_big; |
252b5132 RH |
4499 | } |
4500 | ||
4501 | if (op == O_constant) | |
4502 | { | |
3d540e93 NC |
4503 | valueT get; |
4504 | valueT use; | |
4505 | valueT mask; | |
252b5132 | 4506 | valueT hibit; |
3d540e93 | 4507 | valueT unmask; |
252b5132 RH |
4508 | |
4509 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4510 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4511 | if (nbytes >= sizeof (valueT)) |
4512 | { | |
4513 | mask = 0; | |
4514 | if (nbytes > sizeof (valueT)) | |
4515 | hibit = 0; | |
4516 | else | |
4517 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4518 | } | |
4519 | else | |
4520 | { | |
041ff4dd | 4521 | /* Don't store these bits. */ |
252b5132 RH |
4522 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4523 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4524 | } | |
4525 | ||
041ff4dd | 4526 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4527 | |
4528 | #ifdef NEVER | |
4529 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4530 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4531 | #endif |
4532 | ||
4533 | get = exp->X_add_number; | |
4534 | use = get & unmask; | |
4535 | if ((get & mask) != 0 | |
4536 | && ((get & mask) != mask | |
4537 | || (get & hibit) == 0)) | |
5f2b6bc9 NC |
4538 | { |
4539 | /* Leading bits contain both 0s & 1s. */ | |
b6ac5419 | 4540 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4541 | #ifndef __MSVCRT__ |
5c612369 NC |
4542 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4543 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4544 | #else |
4545 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4546 | (unsigned long long) get, (unsigned long long) use); | |
4547 | #endif | |
b6ac5419 AM |
4548 | #else |
4549 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4550 | (unsigned long) get, (unsigned long) use); | |
4551 | #endif | |
252b5132 | 4552 | } |
041ff4dd | 4553 | /* Put bytes in right order. */ |
252b5132 RH |
4554 | md_number_to_chars (p, use, (int) nbytes); |
4555 | } | |
4556 | else if (op == O_big) | |
4557 | { | |
4558 | unsigned int size; | |
4559 | LITTLENUM_TYPE *nums; | |
4560 | ||
252b5132 RH |
4561 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4562 | if (nbytes < size) | |
4563 | { | |
93d90f46 | 4564 | int i = nbytes / CHARS_PER_LITTLENUM; |
5f2b6bc9 | 4565 | |
93d90f46 AM |
4566 | if (i != 0) |
4567 | { | |
4568 | LITTLENUM_TYPE sign = 0; | |
4569 | if ((generic_bignum[--i] | |
4570 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4571 | sign = ~(LITTLENUM_TYPE) 0; | |
5f2b6bc9 | 4572 | |
93d90f46 AM |
4573 | while (++i < exp->X_add_number) |
4574 | if (generic_bignum[i] != sign) | |
4575 | break; | |
4576 | } | |
5f2b6bc9 NC |
4577 | else if (nbytes == 1) |
4578 | { | |
4579 | /* We have nbytes == 1 and CHARS_PER_LITTLENUM == 2 (probably). | |
4580 | Check that bits 8.. of generic_bignum[0] match bit 7 | |
4581 | and that they match all of generic_bignum[1..exp->X_add_number]. */ | |
4582 | LITTLENUM_TYPE sign = (generic_bignum[0] & (1 << 7)) ? -1 : 0; | |
4583 | LITTLENUM_TYPE himask = LITTLENUM_MASK & ~ 0xFF; | |
4584 | ||
4585 | if ((generic_bignum[0] & himask) == (sign & himask)) | |
4586 | { | |
4587 | while (++i < exp->X_add_number) | |
4588 | if (generic_bignum[i] != sign) | |
4589 | break; | |
4590 | } | |
4591 | } | |
4592 | ||
93d90f46 | 4593 | if (i < exp->X_add_number) |
992a06ee AM |
4594 | as_warn (ngettext ("bignum truncated to %d byte", |
4595 | "bignum truncated to %d bytes", | |
4596 | nbytes), | |
4597 | nbytes); | |
252b5132 RH |
4598 | size = nbytes; |
4599 | } | |
4600 | ||
93d90f46 AM |
4601 | if (nbytes == 1) |
4602 | { | |
4603 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4604 | return; | |
4605 | } | |
4606 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4607 | ||
252b5132 RH |
4608 | if (target_big_endian) |
4609 | { | |
4610 | while (nbytes > size) | |
4611 | { | |
4612 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4613 | nbytes -= CHARS_PER_LITTLENUM; | |
4614 | p += CHARS_PER_LITTLENUM; | |
4615 | } | |
4616 | ||
4617 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4618 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4619 | { |
4620 | --nums; | |
4621 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4622 | size -= CHARS_PER_LITTLENUM; | |
4623 | p += CHARS_PER_LITTLENUM; | |
4624 | } | |
4625 | } | |
4626 | else | |
4627 | { | |
4628 | nums = generic_bignum; | |
ceac3f62 | 4629 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4630 | { |
4631 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4632 | ++nums; | |
4633 | size -= CHARS_PER_LITTLENUM; | |
4634 | p += CHARS_PER_LITTLENUM; | |
4635 | nbytes -= CHARS_PER_LITTLENUM; | |
4636 | } | |
4637 | ||
ceac3f62 | 4638 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4639 | { |
4640 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4641 | nbytes -= CHARS_PER_LITTLENUM; | |
4642 | p += CHARS_PER_LITTLENUM; | |
4643 | } | |
4644 | } | |
4645 | } | |
4646 | else | |
62ebcb5c | 4647 | emit_expr_fix (exp, nbytes, frag_now, p, TC_PARSE_CONS_RETURN_NONE); |
7ddd14de BW |
4648 | } |
4649 | ||
4650 | void | |
62ebcb5c | 4651 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p, |
00c06fdc | 4652 | TC_PARSE_CONS_RETURN_TYPE r ATTRIBUTE_UNUSED) |
7ddd14de | 4653 | { |
62ebcb5c AM |
4654 | int offset = 0; |
4655 | unsigned int size = nbytes; | |
4656 | ||
4657 | memset (p, 0, size); | |
252b5132 | 4658 | |
7ddd14de | 4659 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4660 | |
252b5132 | 4661 | #ifdef TC_CONS_FIX_NEW |
62ebcb5c | 4662 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal + offset, size, exp, r); |
252b5132 | 4663 | #else |
62ebcb5c AM |
4664 | if (r != TC_PARSE_CONS_RETURN_NONE) |
4665 | { | |
4666 | reloc_howto_type *reloc_howto; | |
252b5132 | 4667 | |
62ebcb5c AM |
4668 | reloc_howto = bfd_reloc_type_lookup (stdoutput, r); |
4669 | size = bfd_get_reloc_size (reloc_howto); | |
4670 | ||
4671 | if (size > nbytes) | |
4672 | { | |
992a06ee AM |
4673 | as_bad (ngettext ("%s relocations do not fit in %u byte", |
4674 | "%s relocations do not fit in %u bytes", | |
4675 | nbytes), | |
62ebcb5c AM |
4676 | reloc_howto->name, nbytes); |
4677 | return; | |
4678 | } | |
4679 | else if (target_big_endian) | |
4680 | offset = nbytes - size; | |
4681 | } | |
4682 | else | |
4683 | switch (size) | |
7ddd14de BW |
4684 | { |
4685 | case 1: | |
4686 | r = BFD_RELOC_8; | |
4687 | break; | |
4688 | case 2: | |
4689 | r = BFD_RELOC_16; | |
4690 | break; | |
d4f4f3fb AM |
4691 | case 3: |
4692 | r = BFD_RELOC_24; | |
4693 | break; | |
7ddd14de BW |
4694 | case 4: |
4695 | r = BFD_RELOC_32; | |
4696 | break; | |
4697 | case 8: | |
4698 | r = BFD_RELOC_64; | |
4699 | break; | |
4700 | default: | |
62ebcb5c AM |
4701 | as_bad (_("unsupported BFD relocation size %u"), size); |
4702 | return; | |
252b5132 | 4703 | } |
62ebcb5c AM |
4704 | fix_new_exp (frag, p - frag->fr_literal + offset, size, |
4705 | exp, 0, r); | |
252b5132 | 4706 | #endif |
252b5132 RH |
4707 | } |
4708 | \f | |
252b5132 RH |
4709 | /* Handle an MRI style string expression. */ |
4710 | ||
abd63a32 | 4711 | #ifdef TC_M68K |
252b5132 | 4712 | static void |
62ebcb5c | 4713 | parse_mri_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4714 | { |
4715 | if (*input_line_pointer != '\'' | |
4716 | && (input_line_pointer[1] != '\'' | |
4717 | || (*input_line_pointer != 'A' | |
4718 | && *input_line_pointer != 'E'))) | |
1e539319 | 4719 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
252b5132 RH |
4720 | else |
4721 | { | |
4722 | unsigned int scan; | |
4723 | unsigned int result = 0; | |
4724 | ||
4725 | /* An MRI style string. Cut into as many bytes as will fit into | |
4726 | a nbyte chunk, left justify if necessary, and separate with | |
4727 | commas so we can try again later. */ | |
4728 | if (*input_line_pointer == 'A') | |
4729 | ++input_line_pointer; | |
4730 | else if (*input_line_pointer == 'E') | |
4731 | { | |
4732 | as_bad (_("EBCDIC constants are not supported")); | |
4733 | ++input_line_pointer; | |
4734 | } | |
4735 | ||
4736 | input_line_pointer++; | |
4737 | for (scan = 0; scan < nbytes; scan++) | |
4738 | { | |
4739 | if (*input_line_pointer == '\'') | |
4740 | { | |
4741 | if (input_line_pointer[1] == '\'') | |
4742 | { | |
4743 | input_line_pointer++; | |
4744 | } | |
4745 | else | |
4746 | break; | |
4747 | } | |
4748 | result = (result << 8) | (*input_line_pointer++); | |
4749 | } | |
4750 | ||
041ff4dd | 4751 | /* Left justify. */ |
252b5132 RH |
4752 | while (scan < nbytes) |
4753 | { | |
4754 | result <<= 8; | |
4755 | scan++; | |
4756 | } | |
f0e652b4 | 4757 | |
041ff4dd | 4758 | /* Create correct expression. */ |
252b5132 RH |
4759 | exp->X_op = O_constant; |
4760 | exp->X_add_number = result; | |
f0e652b4 | 4761 | |
041ff4dd | 4762 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4763 | if (input_line_pointer[0] != '\'' || |
4764 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4765 | { | |
4766 | input_line_pointer -= 2; | |
4767 | input_line_pointer[0] = ','; | |
4768 | input_line_pointer[1] = '\''; | |
4769 | } | |
4770 | else | |
4771 | input_line_pointer++; | |
4772 | } | |
4773 | } | |
abd63a32 | 4774 | #endif /* TC_M68K */ |
252b5132 RH |
4775 | \f |
4776 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4777 | ||
4778 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4779 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4780 | object file COUNT times. | |
4781 | ||
4782 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4783 | ||
4784 | static void | |
e046cf80 | 4785 | parse_repeat_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4786 | { |
4787 | expressionS count; | |
3d540e93 | 4788 | int i; |
252b5132 RH |
4789 | |
4790 | expression (exp); | |
4791 | ||
4792 | if (*input_line_pointer != ':') | |
4793 | { | |
4794 | /* No repeat count. */ | |
4795 | return; | |
4796 | } | |
4797 | ||
4798 | ++input_line_pointer; | |
4799 | expression (&count); | |
4800 | if (count.X_op != O_constant | |
4801 | || count.X_add_number <= 0) | |
4802 | { | |
0e389e77 | 4803 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4804 | return; |
4805 | } | |
4806 | ||
4807 | /* The cons function is going to output this expression once. So we | |
4808 | output it count - 1 times. */ | |
4809 | for (i = count.X_add_number - 1; i > 0; i--) | |
4810 | emit_expr (exp, nbytes); | |
4811 | } | |
4812 | ||
4813 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4814 | \f | |
4815 | /* Parse a floating point number represented as a hex constant. This | |
4816 | permits users to specify the exact bits they want in the floating | |
4817 | point number. */ | |
4818 | ||
4819 | static int | |
39e6acbd | 4820 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4821 | { |
4822 | int length; | |
4823 | int i; | |
4824 | ||
4825 | switch (float_type) | |
4826 | { | |
4827 | case 'f': | |
4828 | case 'F': | |
4829 | case 's': | |
4830 | case 'S': | |
4831 | length = 4; | |
4832 | break; | |
4833 | ||
4834 | case 'd': | |
4835 | case 'D': | |
4836 | case 'r': | |
4837 | case 'R': | |
4838 | length = 8; | |
4839 | break; | |
4840 | ||
4841 | case 'x': | |
4842 | case 'X': | |
4843 | length = 12; | |
4844 | break; | |
4845 | ||
4846 | case 'p': | |
4847 | case 'P': | |
4848 | length = 12; | |
4849 | break; | |
4850 | ||
4851 | default: | |
0e389e77 | 4852 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4853 | return -1; |
4854 | } | |
4855 | ||
4856 | /* It would be nice if we could go through expression to parse the | |
4857 | hex constant, but if we get a bignum it's a pain to sort it into | |
4858 | the buffer correctly. */ | |
4859 | i = 0; | |
4860 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4861 | { | |
4862 | int d; | |
4863 | ||
4864 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4865 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4866 | if (*input_line_pointer == '_') |
4867 | { | |
4868 | ++input_line_pointer; | |
4869 | continue; | |
4870 | } | |
4871 | ||
4872 | if (i >= length) | |
4873 | { | |
0e389e77 | 4874 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4875 | return -1; |
4876 | } | |
4877 | d = hex_value (*input_line_pointer) << 4; | |
4878 | ++input_line_pointer; | |
4879 | while (*input_line_pointer == '_') | |
4880 | ++input_line_pointer; | |
4881 | if (hex_p (*input_line_pointer)) | |
4882 | { | |
4883 | d += hex_value (*input_line_pointer); | |
4884 | ++input_line_pointer; | |
4885 | } | |
4886 | if (target_big_endian) | |
4887 | bytes[i] = d; | |
4888 | else | |
4889 | bytes[length - i - 1] = d; | |
4890 | ++i; | |
4891 | } | |
4892 | ||
4893 | if (i < length) | |
4894 | { | |
4895 | if (target_big_endian) | |
4896 | memset (bytes + i, 0, length - i); | |
4897 | else | |
4898 | memset (bytes, 0, length - i); | |
4899 | } | |
4900 | ||
4901 | return length; | |
4902 | } | |
4903 | ||
d6415f6c | 4904 | /* float_cons() |
f0e652b4 | 4905 | |
041ff4dd NC |
4906 | CONStruct some more frag chars of .floats .ffloats etc. |
4907 | Makes 0 or more new frags. | |
4908 | If need_pass_2 == 1, no frags are emitted. | |
4909 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4910 | |
041ff4dd NC |
4911 | A floating constant is defined by atof_generic(), except it is preceded |
4912 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4913 | reading, I decided to be incompatible. This always tries to give you | |
4914 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4915 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4916 | a choice of 2 flavours of noise according to which of 2 floating-point |
4917 | scanners you directed AS to use. | |
f0e652b4 | 4918 | |
041ff4dd | 4919 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4920 | |
4921 | void | |
39e6acbd | 4922 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4923 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4924 | { |
3d540e93 | 4925 | char *p; |
041ff4dd | 4926 | int length; /* Number of chars in an object. */ |
6d4af3c2 | 4927 | const char *err; /* Error from scanning floating literal. */ |
252b5132 RH |
4928 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4929 | ||
4930 | if (is_it_end_of_statement ()) | |
4931 | { | |
4932 | demand_empty_rest_of_line (); | |
4933 | return; | |
4934 | } | |
4935 | ||
ec9ab52c JB |
4936 | if (now_seg == absolute_section) |
4937 | { | |
4938 | as_bad (_("attempt to store float in absolute section")); | |
4939 | ignore_rest_of_line (); | |
4940 | return; | |
4941 | } | |
4942 | ||
4943 | if (in_bss ()) | |
4944 | { | |
4945 | as_bad (_("attempt to store float in section `%s'"), | |
4946 | segment_name (now_seg)); | |
4947 | ignore_rest_of_line (); | |
4948 | return; | |
4949 | } | |
4950 | ||
252b5132 RH |
4951 | #ifdef md_flush_pending_output |
4952 | md_flush_pending_output (); | |
4953 | #endif | |
4954 | ||
cc3f603a JM |
4955 | #ifdef md_cons_align |
4956 | md_cons_align (1); | |
4957 | #endif | |
4958 | ||
252b5132 RH |
4959 | do |
4960 | { | |
041ff4dd | 4961 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4962 | SKIP_WHITESPACE (); |
4963 | ||
4964 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4965 | letter is legal. Someone may invent a "z" format and this routine |
4966 | has no use for such information. Lusers beware: you get | |
4967 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4968 | if (input_line_pointer[0] == '0' |
3882b010 | 4969 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4970 | input_line_pointer += 2; |
4971 | ||
4972 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4973 | point with the exact digits specified. */ |
252b5132 RH |
4974 | if (input_line_pointer[0] == ':') |
4975 | { | |
4976 | ++input_line_pointer; | |
4977 | length = hex_float (float_type, temp); | |
4978 | if (length < 0) | |
4979 | { | |
4980 | ignore_rest_of_line (); | |
4981 | return; | |
4982 | } | |
4983 | } | |
4984 | else | |
4985 | { | |
4986 | err = md_atof (float_type, temp, &length); | |
4987 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4988 | know (err != NULL || length > 0); |
252b5132 RH |
4989 | if (err) |
4990 | { | |
0e389e77 | 4991 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4992 | ignore_rest_of_line (); |
4993 | return; | |
4994 | } | |
4995 | } | |
4996 | ||
4997 | if (!need_pass_2) | |
4998 | { | |
4999 | int count; | |
5000 | ||
5001 | count = 1; | |
5002 | ||
5003 | #ifdef REPEAT_CONS_EXPRESSIONS | |
5004 | if (*input_line_pointer == ':') | |
5005 | { | |
5006 | expressionS count_exp; | |
5007 | ||
5008 | ++input_line_pointer; | |
5009 | expression (&count_exp); | |
f0e652b4 | 5010 | |
252b5132 RH |
5011 | if (count_exp.X_op != O_constant |
5012 | || count_exp.X_add_number <= 0) | |
041ff4dd | 5013 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
5014 | else |
5015 | count = count_exp.X_add_number; | |
5016 | } | |
5017 | #endif | |
5018 | ||
5019 | while (--count >= 0) | |
5020 | { | |
5021 | p = frag_more (length); | |
5022 | memcpy (p, temp, (unsigned int) length); | |
5023 | } | |
5024 | } | |
5025 | SKIP_WHITESPACE (); | |
5026 | } | |
5027 | while (*input_line_pointer++ == ','); | |
5028 | ||
041ff4dd NC |
5029 | /* Put terminator back into stream. */ |
5030 | --input_line_pointer; | |
252b5132 | 5031 | demand_empty_rest_of_line (); |
041ff4dd | 5032 | } |
252b5132 | 5033 | \f |
9136aa49 | 5034 | /* LEB128 Encoding. |
252b5132 | 5035 | |
9136aa49 DG |
5036 | Note - we are using the DWARF standard's definition of LEB128 encoding |
5037 | where each 7-bit value is a stored in a byte, *not* an octet. This | |
5038 | means that on targets where a byte contains multiple octets there is | |
5039 | a *huge waste of space*. (This also means that we do not have to | |
5040 | have special versions of these functions for when OCTETS_PER_BYTE_POWER | |
5041 | is non-zero). | |
5042 | ||
5043 | If the 7-bit values were to be packed into N-bit bytes (where N > 8) | |
5044 | we would then have to consider whether multiple, successive LEB128 | |
5045 | values should be packed into the bytes without padding (bad idea) or | |
5046 | whether each LEB128 number is padded out to a whole number of bytes. | |
5047 | Plus you have to decide on the endianness of packing octets into a | |
5048 | byte. */ | |
5049 | ||
5050 | /* Return the size of a LEB128 value in bytes. */ | |
5051 | ||
5052 | static inline unsigned int | |
39e6acbd | 5053 | sizeof_sleb128 (offsetT value) |
252b5132 | 5054 | { |
3d540e93 NC |
5055 | int size = 0; |
5056 | unsigned byte; | |
252b5132 RH |
5057 | |
5058 | do | |
5059 | { | |
5060 | byte = (value & 0x7f); | |
5061 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5062 | Fortunately, we can structure things so that the extra work reduces | |
5063 | to a noop on systems that do things "properly". */ | |
5064 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5065 | size += 1; | |
5066 | } | |
5067 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
5068 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5069 | ||
5070 | return size; | |
5071 | } | |
5072 | ||
9136aa49 | 5073 | static inline unsigned int |
39e6acbd | 5074 | sizeof_uleb128 (valueT value) |
252b5132 | 5075 | { |
3d540e93 | 5076 | int size = 0; |
252b5132 RH |
5077 | |
5078 | do | |
5079 | { | |
252b5132 RH |
5080 | value >>= 7; |
5081 | size += 1; | |
5082 | } | |
5083 | while (value != 0); | |
5084 | ||
5085 | return size; | |
5086 | } | |
5087 | ||
9136aa49 | 5088 | unsigned int |
39e6acbd | 5089 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
5090 | { |
5091 | if (sign) | |
5092 | return sizeof_sleb128 ((offsetT) value); | |
5093 | else | |
5094 | return sizeof_uleb128 (value); | |
5095 | } | |
5096 | ||
9136aa49 | 5097 | /* Output a LEB128 value. Returns the number of bytes used. */ |
252b5132 | 5098 | |
9136aa49 | 5099 | static inline unsigned int |
39e6acbd | 5100 | output_sleb128 (char *p, offsetT value) |
252b5132 | 5101 | { |
3d540e93 NC |
5102 | char *orig = p; |
5103 | int more; | |
252b5132 RH |
5104 | |
5105 | do | |
5106 | { | |
5107 | unsigned byte = (value & 0x7f); | |
5108 | ||
5109 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5110 | Fortunately, we can structure things so that the extra work reduces | |
5111 | to a noop on systems that do things "properly". */ | |
5112 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5113 | ||
5114 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
5115 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5116 | if (more) | |
5117 | byte |= 0x80; | |
5118 | ||
5119 | *p++ = byte; | |
5120 | } | |
5121 | while (more); | |
5122 | ||
5123 | return p - orig; | |
5124 | } | |
5125 | ||
9136aa49 | 5126 | static inline unsigned int |
39e6acbd | 5127 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
5128 | { |
5129 | char *orig = p; | |
5130 | ||
5131 | do | |
5132 | { | |
5133 | unsigned byte = (value & 0x7f); | |
9136aa49 | 5134 | |
252b5132 RH |
5135 | value >>= 7; |
5136 | if (value != 0) | |
5137 | /* More bytes to follow. */ | |
5138 | byte |= 0x80; | |
5139 | ||
5140 | *p++ = byte; | |
5141 | } | |
5142 | while (value != 0); | |
5143 | ||
5144 | return p - orig; | |
5145 | } | |
5146 | ||
9136aa49 | 5147 | unsigned int |
39e6acbd | 5148 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
5149 | { |
5150 | if (sign) | |
5151 | return output_sleb128 (p, (offsetT) value); | |
5152 | else | |
5153 | return output_uleb128 (p, value); | |
5154 | } | |
5155 | ||
5156 | /* Do the same for bignums. We combine sizeof with output here in that | |
5157 | we don't output for NULL values of P. It isn't really as critical as | |
9136aa49 DG |
5158 | for "normal" values that this be streamlined. Returns the number of |
5159 | bytes used. */ | |
252b5132 | 5160 | |
9136aa49 DG |
5161 | static inline unsigned int |
5162 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5163 | { |
5164 | char *orig = p; | |
5165 | valueT val = 0; | |
5166 | int loaded = 0; | |
5167 | unsigned byte; | |
5168 | ||
5169 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
5170 | while (size > 1 |
5171 | && bignum[size - 1] == LITTLENUM_MASK | |
5172 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
5173 | size--; |
5174 | ||
5175 | do | |
5176 | { | |
e5604d79 RS |
5177 | /* OR in the next part of the littlenum. */ |
5178 | val |= (*bignum << loaded); | |
5179 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
5180 | size--; | |
5181 | bignum++; | |
5182 | ||
5183 | /* Add bytes until there are less than 7 bits left in VAL | |
5184 | or until every non-sign bit has been written. */ | |
5185 | do | |
252b5132 | 5186 | { |
e5604d79 RS |
5187 | byte = val & 0x7f; |
5188 | loaded -= 7; | |
5189 | val >>= 7; | |
5190 | if (size > 0 | |
5191 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 5192 | byte |= 0x80; |
e5604d79 RS |
5193 | |
5194 | if (orig) | |
5195 | *p = byte; | |
5196 | p++; | |
252b5132 | 5197 | } |
e5604d79 RS |
5198 | while ((byte & 0x80) != 0 && loaded >= 7); |
5199 | } | |
5200 | while (size > 0); | |
252b5132 | 5201 | |
e5604d79 RS |
5202 | /* Mop up any left-over bits (of which there will be less than 7). */ |
5203 | if ((byte & 0x80) != 0) | |
5204 | { | |
5205 | /* Sign-extend VAL. */ | |
5206 | if (val & (1 << (loaded - 1))) | |
29798047 | 5207 | val |= ~0U << loaded; |
252b5132 | 5208 | if (orig) |
e5604d79 | 5209 | *p = val & 0x7f; |
252b5132 RH |
5210 | p++; |
5211 | } | |
252b5132 RH |
5212 | |
5213 | return p - orig; | |
5214 | } | |
5215 | ||
9136aa49 DG |
5216 | static inline unsigned int |
5217 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5218 | { |
5219 | char *orig = p; | |
5220 | valueT val = 0; | |
5221 | int loaded = 0; | |
5222 | unsigned byte; | |
5223 | ||
5224 | /* Strip leading zeros off the bignum. */ | |
5225 | /* XXX: Is this needed? */ | |
041ff4dd | 5226 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
5227 | size--; |
5228 | ||
5229 | do | |
5230 | { | |
5231 | if (loaded < 7 && size > 0) | |
5232 | { | |
5233 | val |= (*bignum << loaded); | |
5234 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5235 | size--; | |
5236 | bignum++; | |
5237 | } | |
5238 | ||
5239 | byte = val & 0x7f; | |
5240 | loaded -= 7; | |
5241 | val >>= 7; | |
5242 | ||
5243 | if (size > 0 || val) | |
5244 | byte |= 0x80; | |
5245 | ||
5246 | if (orig) | |
5247 | *p = byte; | |
5248 | p++; | |
5249 | } | |
5250 | while (byte & 0x80); | |
5251 | ||
5252 | return p - orig; | |
5253 | } | |
5254 | ||
9136aa49 DG |
5255 | static unsigned int |
5256 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size, int sign) | |
252b5132 RH |
5257 | { |
5258 | if (sign) | |
5259 | return output_big_sleb128 (p, bignum, size); | |
5260 | else | |
5261 | return output_big_uleb128 (p, bignum, size); | |
5262 | } | |
5263 | ||
5264 | /* Generate the appropriate fragments for a given expression to emit a | |
9a724e7b | 5265 | leb128 value. SIGN is 1 for sleb, 0 for uleb. */ |
252b5132 | 5266 | |
6b9a135d | 5267 | void |
39e6acbd | 5268 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5269 | { |
5270 | operatorT op = exp->X_op; | |
b7712f8d | 5271 | unsigned int nbytes; |
252b5132 RH |
5272 | |
5273 | if (op == O_absent || op == O_illegal) | |
5274 | { | |
5275 | as_warn (_("zero assumed for missing expression")); | |
5276 | exp->X_add_number = 0; | |
5277 | op = O_constant; | |
5278 | } | |
5279 | else if (op == O_big && exp->X_add_number <= 0) | |
5280 | { | |
0e389e77 | 5281 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5282 | exp->X_add_number = 0; |
5283 | op = O_constant; | |
5284 | } | |
5285 | else if (op == O_register) | |
5286 | { | |
5287 | as_warn (_("register value used as expression")); | |
5288 | op = O_constant; | |
5289 | } | |
e5604d79 RS |
5290 | else if (op == O_constant |
5291 | && sign | |
956a6ba3 | 5292 | && (exp->X_add_number < 0) == !exp->X_extrabit) |
e5604d79 RS |
5293 | { |
5294 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5295 | doesn't reflect the sign of the original value. Convert EXP | |
5296 | to a correctly-extended bignum instead. */ | |
956a6ba3 | 5297 | convert_to_bignum (exp, exp->X_extrabit); |
e5604d79 RS |
5298 | op = O_big; |
5299 | } | |
252b5132 | 5300 | |
ec9ab52c JB |
5301 | if (now_seg == absolute_section) |
5302 | { | |
5303 | if (op != O_constant || exp->X_add_number != 0) | |
5304 | as_bad (_("attempt to store value in absolute section")); | |
5305 | abs_section_offset++; | |
5306 | return; | |
5307 | } | |
5308 | ||
5309 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
5310 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
5311 | segment_name (now_seg)); | |
5312 | ||
67a659f6 RH |
5313 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5314 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5315 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5316 | if (check_eh_frame (exp, &nbytes)) |
5317 | abort (); | |
5318 | ||
371b7465 RH |
5319 | /* Let the backend know that subsequent data may be byte aligned. */ |
5320 | #ifdef md_cons_align | |
5321 | md_cons_align (1); | |
5322 | #endif | |
5323 | ||
252b5132 RH |
5324 | if (op == O_constant) |
5325 | { | |
5326 | /* If we've got a constant, emit the thing directly right now. */ | |
5327 | ||
5328 | valueT value = exp->X_add_number; | |
9136aa49 | 5329 | unsigned int size; |
252b5132 RH |
5330 | char *p; |
5331 | ||
5332 | size = sizeof_leb128 (value, sign); | |
5333 | p = frag_more (size); | |
9136aa49 DG |
5334 | if (output_leb128 (p, value, sign) > size) |
5335 | abort (); | |
252b5132 RH |
5336 | } |
5337 | else if (op == O_big) | |
5338 | { | |
5339 | /* O_big is a different sort of constant. */ | |
74def31d | 5340 | int nbr_digits = exp->X_add_number; |
9136aa49 | 5341 | unsigned int size; |
252b5132 RH |
5342 | char *p; |
5343 | ||
74def31d TG |
5344 | /* If the leading littenum is 0xffff, prepend a 0 to avoid confusion with |
5345 | a signed number. Unary operators like - or ~ always extend the | |
5346 | bignum to its largest size. */ | |
5347 | if (exp->X_unsigned | |
5348 | && nbr_digits < SIZE_OF_LARGE_NUMBER | |
5349 | && generic_bignum[nbr_digits - 1] == LITTLENUM_MASK) | |
5350 | generic_bignum[nbr_digits++] = 0; | |
5351 | ||
5352 | size = output_big_leb128 (NULL, generic_bignum, nbr_digits, sign); | |
252b5132 | 5353 | p = frag_more (size); |
74def31d | 5354 | if (output_big_leb128 (p, generic_bignum, nbr_digits, sign) > size) |
9136aa49 | 5355 | abort (); |
252b5132 RH |
5356 | } |
5357 | else | |
5358 | { | |
041ff4dd | 5359 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5360 | resolve things later. */ |
5361 | ||
041ff4dd | 5362 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5363 | make_expr_symbol (exp), 0, (char *) NULL); |
5364 | } | |
5365 | } | |
5366 | ||
5367 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5368 | ||
5369 | void | |
39e6acbd | 5370 | s_leb128 (int sign) |
252b5132 RH |
5371 | { |
5372 | expressionS exp; | |
5373 | ||
00bbdfe7 BW |
5374 | #ifdef md_flush_pending_output |
5375 | md_flush_pending_output (); | |
5376 | #endif | |
5377 | ||
041ff4dd NC |
5378 | do |
5379 | { | |
38cf168b | 5380 | expression (&exp); |
041ff4dd NC |
5381 | emit_leb128_expr (&exp, sign); |
5382 | } | |
5383 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5384 | |
5385 | input_line_pointer--; | |
5386 | demand_empty_rest_of_line (); | |
5387 | } | |
5388 | \f | |
38a57ae7 NC |
5389 | static void |
5390 | stringer_append_char (int c, int bitsize) | |
5391 | { | |
ec9ab52c JB |
5392 | if (c && in_bss ()) |
5393 | as_bad (_("attempt to store non-empty string in section `%s'"), | |
5394 | segment_name (now_seg)); | |
5395 | ||
38a57ae7 NC |
5396 | if (!target_big_endian) |
5397 | FRAG_APPEND_1_CHAR (c); | |
5398 | ||
5399 | switch (bitsize) | |
5400 | { | |
5401 | case 64: | |
5402 | FRAG_APPEND_1_CHAR (0); | |
5403 | FRAG_APPEND_1_CHAR (0); | |
5404 | FRAG_APPEND_1_CHAR (0); | |
5405 | FRAG_APPEND_1_CHAR (0); | |
5406 | /* Fall through. */ | |
5407 | case 32: | |
5408 | FRAG_APPEND_1_CHAR (0); | |
5409 | FRAG_APPEND_1_CHAR (0); | |
5410 | /* Fall through. */ | |
5411 | case 16: | |
5412 | FRAG_APPEND_1_CHAR (0); | |
5413 | /* Fall through. */ | |
5414 | case 8: | |
5415 | break; | |
5416 | default: | |
5417 | /* Called with invalid bitsize argument. */ | |
5418 | abort (); | |
5419 | break; | |
5420 | } | |
5421 | if (target_big_endian) | |
5422 | FRAG_APPEND_1_CHAR (c); | |
5423 | } | |
5424 | ||
5425 | /* Worker to do .ascii etc statements. | |
5426 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5427 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5428 | check it. |
5429 | Checks for end-of-line. | |
5430 | BITS_APPENDZERO says how many bits are in a target char. | |
5431 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5432 | |
5433 | void | |
38a57ae7 | 5434 | stringer (int bits_appendzero) |
252b5132 | 5435 | { |
38a57ae7 NC |
5436 | const int bitsize = bits_appendzero & ~7; |
5437 | const int append_zero = bits_appendzero & 1; | |
5438 | unsigned int c; | |
87975d2a | 5439 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5440 | char *start; |
87975d2a | 5441 | #endif |
252b5132 RH |
5442 | |
5443 | #ifdef md_flush_pending_output | |
5444 | md_flush_pending_output (); | |
5445 | #endif | |
5446 | ||
cc3f603a JM |
5447 | #ifdef md_cons_align |
5448 | md_cons_align (1); | |
5449 | #endif | |
5450 | ||
35c1a439 JB |
5451 | /* If we have been switched into the abs_section then we |
5452 | will not have an obstack onto which we can hang strings. */ | |
5453 | if (now_seg == absolute_section) | |
5454 | { | |
5455 | as_bad (_("strings must be placed into a section")); | |
5456 | ignore_rest_of_line (); | |
5457 | return; | |
5458 | } | |
5459 | ||
041ff4dd NC |
5460 | /* The following awkward logic is to parse ZERO or more strings, |
5461 | comma separated. Recall a string expression includes spaces | |
5462 | before the opening '\"' and spaces after the closing '\"'. | |
5463 | We fake a leading ',' if there is (supposed to be) | |
5464 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5465 | if (is_it_end_of_statement ()) |
5466 | { | |
041ff4dd NC |
5467 | c = 0; /* Skip loop. */ |
5468 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5469 | } |
5470 | else | |
5471 | { | |
041ff4dd | 5472 | c = ','; /* Do loop. */ |
252b5132 | 5473 | } |
d6415f6c | 5474 | |
252b5132 RH |
5475 | while (c == ',' || c == '<' || c == '"') |
5476 | { | |
5477 | SKIP_WHITESPACE (); | |
5478 | switch (*input_line_pointer) | |
5479 | { | |
5480 | case '\"': | |
041ff4dd | 5481 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5482 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5483 | start = input_line_pointer; |
87975d2a | 5484 | #endif |
38a57ae7 | 5485 | |
252b5132 | 5486 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5487 | stringer_append_char (c, bitsize); |
5488 | ||
3d955acb NC |
5489 | /* Treat "a" "b" as "ab". Even if we are appending zeros. */ |
5490 | SKIP_ALL_WHITESPACE (); | |
5491 | if (*input_line_pointer == '"') | |
5492 | break; | |
5493 | ||
252b5132 | 5494 | if (append_zero) |
38a57ae7 NC |
5495 | stringer_append_char (0, bitsize); |
5496 | ||
87975d2a | 5497 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5498 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5499 | will emit .string with a filename in the .debug section |
5500 | after a sequence of constants. See the comment in | |
5501 | emit_expr for the sequence. emit_expr will set | |
5502 | dwarf_file_string to non-zero if this string might be a | |
5503 | source file name. */ | |
252b5132 RH |
5504 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5505 | dwarf_file_string = 0; | |
5506 | else if (dwarf_file_string) | |
5507 | { | |
5508 | c = input_line_pointer[-1]; | |
5509 | input_line_pointer[-1] = '\0'; | |
5510 | listing_source_file (start); | |
5511 | input_line_pointer[-1] = c; | |
5512 | } | |
252b5132 RH |
5513 | #endif |
5514 | ||
5515 | break; | |
5516 | case '<': | |
5517 | input_line_pointer++; | |
5518 | c = get_single_number (); | |
38a57ae7 | 5519 | stringer_append_char (c, bitsize); |
252b5132 | 5520 | if (*input_line_pointer != '>') |
bdfb4455 WH |
5521 | { |
5522 | as_bad (_("expected <nn>")); | |
5523 | ignore_rest_of_line (); | |
5524 | return; | |
5525 | } | |
252b5132 RH |
5526 | input_line_pointer++; |
5527 | break; | |
5528 | case ',': | |
5529 | input_line_pointer++; | |
5530 | break; | |
5531 | } | |
5532 | SKIP_WHITESPACE (); | |
5533 | c = *input_line_pointer; | |
5534 | } | |
5535 | ||
5536 | demand_empty_rest_of_line (); | |
38a57ae7 | 5537 | } |
252b5132 RH |
5538 | \f |
5539 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5540 | high bits set. We'll probably also have trouble with | |
5541 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5542 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5543 | |
041ff4dd | 5544 | unsigned int |
39e6acbd | 5545 | next_char_of_string (void) |
252b5132 | 5546 | { |
3d540e93 | 5547 | unsigned int c; |
252b5132 RH |
5548 | |
5549 | c = *input_line_pointer++ & CHAR_MASK; | |
5550 | switch (c) | |
5551 | { | |
f49547a6 NC |
5552 | case 0: |
5553 | /* PR 20902: Do not advance past the end of the buffer. */ | |
5554 | -- input_line_pointer; | |
5555 | c = NOT_A_CHAR; | |
5556 | break; | |
5557 | ||
252b5132 RH |
5558 | case '\"': |
5559 | c = NOT_A_CHAR; | |
5560 | break; | |
5561 | ||
5562 | case '\n': | |
0e389e77 | 5563 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5564 | bump_line_counters (); |
5565 | break; | |
5566 | ||
252b5132 | 5567 | case '\\': |
16d87673 SB |
5568 | if (!TC_STRING_ESCAPES) |
5569 | break; | |
d9800776 | 5570 | switch (c = *input_line_pointer++ & CHAR_MASK) |
252b5132 RH |
5571 | { |
5572 | case 'b': | |
5573 | c = '\b'; | |
5574 | break; | |
5575 | ||
5576 | case 'f': | |
5577 | c = '\f'; | |
5578 | break; | |
5579 | ||
5580 | case 'n': | |
5581 | c = '\n'; | |
5582 | break; | |
5583 | ||
5584 | case 'r': | |
5585 | c = '\r'; | |
5586 | break; | |
5587 | ||
5588 | case 't': | |
5589 | c = '\t'; | |
5590 | break; | |
5591 | ||
5592 | case 'v': | |
5593 | c = '\013'; | |
5594 | break; | |
5595 | ||
5596 | case '\\': | |
5597 | case '"': | |
041ff4dd | 5598 | break; /* As itself. */ |
252b5132 RH |
5599 | |
5600 | case '0': | |
5601 | case '1': | |
5602 | case '2': | |
5603 | case '3': | |
5604 | case '4': | |
5605 | case '5': | |
5606 | case '6': | |
5607 | case '7': | |
5608 | case '8': | |
5609 | case '9': | |
5610 | { | |
5611 | long number; | |
5612 | int i; | |
5613 | ||
041ff4dd | 5614 | for (i = 0, number = 0; |
3882b010 | 5615 | ISDIGIT (c) && i < 3; |
041ff4dd | 5616 | c = *input_line_pointer++, i++) |
252b5132 RH |
5617 | { |
5618 | number = number * 8 + c - '0'; | |
5619 | } | |
f0e652b4 | 5620 | |
d9800776 | 5621 | c = number & CHAR_MASK; |
252b5132 RH |
5622 | } |
5623 | --input_line_pointer; | |
5624 | break; | |
5625 | ||
5626 | case 'x': | |
5627 | case 'X': | |
5628 | { | |
5629 | long number; | |
5630 | ||
5631 | number = 0; | |
5632 | c = *input_line_pointer++; | |
3882b010 | 5633 | while (ISXDIGIT (c)) |
252b5132 | 5634 | { |
3882b010 | 5635 | if (ISDIGIT (c)) |
252b5132 | 5636 | number = number * 16 + c - '0'; |
3882b010 | 5637 | else if (ISUPPER (c)) |
252b5132 RH |
5638 | number = number * 16 + c - 'A' + 10; |
5639 | else | |
5640 | number = number * 16 + c - 'a' + 10; | |
5641 | c = *input_line_pointer++; | |
5642 | } | |
d9800776 | 5643 | c = number & CHAR_MASK; |
252b5132 RH |
5644 | --input_line_pointer; |
5645 | } | |
5646 | break; | |
5647 | ||
5648 | case '\n': | |
041ff4dd | 5649 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5650 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5651 | c = '\n'; |
5652 | bump_line_counters (); | |
5653 | break; | |
5654 | ||
f49547a6 NC |
5655 | case 0: |
5656 | /* Do not advance past the end of the buffer. */ | |
5657 | -- input_line_pointer; | |
5658 | c = NOT_A_CHAR; | |
5659 | break; | |
5660 | ||
252b5132 RH |
5661 | default: |
5662 | ||
5663 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5664 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5665 | c = '?'; |
5666 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5667 | ||
5668 | break; | |
041ff4dd | 5669 | } |
252b5132 | 5670 | break; |
252b5132 RH |
5671 | |
5672 | default: | |
5673 | break; | |
041ff4dd | 5674 | } |
252b5132 | 5675 | return (c); |
041ff4dd | 5676 | } |
252b5132 RH |
5677 | \f |
5678 | static segT | |
3d540e93 | 5679 | get_segmented_expression (expressionS *expP) |
252b5132 | 5680 | { |
3d540e93 | 5681 | segT retval; |
252b5132 RH |
5682 | |
5683 | retval = expression (expP); | |
5684 | if (expP->X_op == O_illegal | |
5685 | || expP->X_op == O_absent | |
5686 | || expP->X_op == O_big) | |
5687 | { | |
0e389e77 | 5688 | as_bad (_("expected address expression")); |
252b5132 RH |
5689 | expP->X_op = O_constant; |
5690 | expP->X_add_number = 0; | |
5691 | retval = absolute_section; | |
5692 | } | |
5693 | return retval; | |
5694 | } | |
5695 | ||
041ff4dd | 5696 | static segT |
3d540e93 | 5697 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5698 | { |
259af69e | 5699 | segT retval = get_segmented_expression (expP); |
252b5132 | 5700 | |
259af69e | 5701 | if (retval == undefined_section) |
252b5132 RH |
5702 | { |
5703 | /* There is no easy way to extract the undefined symbol from the | |
5704 | expression. */ | |
5705 | if (expP->X_add_symbol != NULL | |
5706 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5707 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5708 | S_GET_NAME (expP->X_add_symbol)); | |
5709 | else | |
5710 | as_warn (_("some symbol undefined; zero assumed")); | |
5711 | retval = absolute_section; | |
5712 | expP->X_op = O_constant; | |
5713 | expP->X_add_number = 0; | |
5714 | } | |
259af69e | 5715 | return retval; |
041ff4dd | 5716 | } |
252b5132 | 5717 | |
041ff4dd | 5718 | char /* Return terminator. */ |
39e6acbd | 5719 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5720 | { |
5721 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5722 | *val_pointer = (long) get_absolute_expression (); | |
5723 | return (*input_line_pointer++); | |
5724 | } | |
5725 | \f | |
041ff4dd NC |
5726 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5727 | Give a warning if that happens. */ | |
5728 | ||
252b5132 | 5729 | char * |
39e6acbd | 5730 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5731 | { |
3d540e93 | 5732 | char *s; |
252b5132 RH |
5733 | |
5734 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5735 | { | |
3d540e93 | 5736 | int len; |
252b5132 RH |
5737 | |
5738 | for (len = *len_pointer; len > 0; len--) | |
5739 | { | |
5740 | if (*s == 0) | |
5741 | { | |
5742 | s = 0; | |
5743 | len = 1; | |
5744 | *len_pointer = 0; | |
0e389e77 | 5745 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5746 | } |
5747 | } | |
5748 | } | |
f0e652b4 | 5749 | |
252b5132 RH |
5750 | return s; |
5751 | } | |
5752 | \f | |
041ff4dd NC |
5753 | /* Demand string, but return a safe (=private) copy of the string. |
5754 | Return NULL if we can't read a string here. */ | |
5755 | ||
252b5132 | 5756 | char * |
39e6acbd | 5757 | demand_copy_string (int *lenP) |
252b5132 | 5758 | { |
3d540e93 NC |
5759 | unsigned int c; |
5760 | int len; | |
252b5132 RH |
5761 | char *retval; |
5762 | ||
5763 | len = 0; | |
5764 | SKIP_WHITESPACE (); | |
5765 | if (*input_line_pointer == '\"') | |
5766 | { | |
041ff4dd | 5767 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5768 | |
5769 | while (is_a_char (c = next_char_of_string ())) | |
5770 | { | |
5771 | obstack_1grow (¬es, c); | |
5772 | len++; | |
5773 | } | |
5774 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5775 | null terminated string. */ |
252b5132 | 5776 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5777 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5778 | } |
5779 | else | |
5780 | { | |
c95b35a9 | 5781 | as_bad (_("missing string")); |
252b5132 RH |
5782 | retval = NULL; |
5783 | ignore_rest_of_line (); | |
5784 | } | |
5785 | *lenP = len; | |
5786 | return (retval); | |
041ff4dd | 5787 | } |
252b5132 | 5788 | \f |
041ff4dd | 5789 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5790 | |
041ff4dd | 5791 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5792 | |
041ff4dd NC |
5793 | Out: 1 if input_line_pointer->end-of-line. */ |
5794 | ||
5795 | int | |
39e6acbd | 5796 | is_it_end_of_statement (void) |
252b5132 RH |
5797 | { |
5798 | SKIP_WHITESPACE (); | |
5799 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5800 | } |
252b5132 | 5801 | |
041ff4dd | 5802 | void |
39e6acbd | 5803 | equals (char *sym_name, int reassign) |
252b5132 | 5804 | { |
252b5132 | 5805 | char *stop = NULL; |
fb25138b | 5806 | char stopc = 0; |
252b5132 RH |
5807 | |
5808 | input_line_pointer++; | |
5809 | if (*input_line_pointer == '=') | |
5810 | input_line_pointer++; | |
9497f5ac NC |
5811 | if (reassign < 0 && *input_line_pointer == '=') |
5812 | input_line_pointer++; | |
252b5132 RH |
5813 | |
5814 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5815 | input_line_pointer++; | |
5816 | ||
5817 | if (flag_mri) | |
5818 | stop = mri_comment_field (&stopc); | |
5819 | ||
9497f5ac | 5820 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5821 | |
5822 | if (flag_mri) | |
31d20a21 AM |
5823 | { |
5824 | demand_empty_rest_of_line (); | |
5825 | mri_comment_end (stop, stopc); | |
5826 | } | |
041ff4dd | 5827 | } |
252b5132 | 5828 | |
7e005732 NC |
5829 | /* .incbin -- include a file verbatim at the current location. */ |
5830 | ||
5831 | void | |
39e6acbd | 5832 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5833 | { |
5834 | FILE * binfile; | |
5835 | char * path; | |
5836 | char * filename; | |
5837 | char * binfrag; | |
5838 | long skip = 0; | |
5839 | long count = 0; | |
5840 | long bytes; | |
5841 | int len; | |
5842 | ||
5843 | #ifdef md_flush_pending_output | |
5844 | md_flush_pending_output (); | |
5845 | #endif | |
5846 | ||
cc3f603a JM |
5847 | #ifdef md_cons_align |
5848 | md_cons_align (1); | |
5849 | #endif | |
5850 | ||
7e005732 NC |
5851 | SKIP_WHITESPACE (); |
5852 | filename = demand_copy_string (& len); | |
5853 | if (filename == NULL) | |
5854 | return; | |
5855 | ||
5856 | SKIP_WHITESPACE (); | |
5857 | ||
5858 | /* Look for optional skip and count. */ | |
5859 | if (* input_line_pointer == ',') | |
5860 | { | |
5861 | ++ input_line_pointer; | |
5862 | skip = get_absolute_expression (); | |
5863 | ||
5864 | SKIP_WHITESPACE (); | |
5865 | ||
5866 | if (* input_line_pointer == ',') | |
5867 | { | |
5868 | ++ input_line_pointer; | |
5869 | ||
5870 | count = get_absolute_expression (); | |
5871 | if (count == 0) | |
5872 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5873 | ||
5874 | SKIP_WHITESPACE (); | |
5875 | } | |
5876 | } | |
5877 | ||
5878 | demand_empty_rest_of_line (); | |
5879 | ||
5880 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5881 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5882 | if (binfile == NULL) |
5883 | { | |
5884 | int i; | |
5885 | ||
8860a416 | 5886 | path = XNEWVEC (char, (unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5887 | |
5888 | for (i = 0; i < include_dir_count; i++) | |
5889 | { | |
5890 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5891 | ||
f740e790 | 5892 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5893 | if (binfile != NULL) |
5894 | break; | |
5895 | } | |
5896 | ||
5897 | if (binfile == NULL) | |
5898 | as_bad (_("file not found: %s"), filename); | |
5899 | } | |
5900 | else | |
5901 | path = xstrdup (filename); | |
5902 | ||
5903 | if (binfile) | |
5904 | { | |
f740e790 NC |
5905 | long file_len; |
5906 | ||
7e005732 NC |
5907 | register_dependency (path); |
5908 | ||
5909 | /* Compute the length of the file. */ | |
5910 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5911 | { | |
5912 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5913 | goto done; | |
5914 | } | |
f740e790 | 5915 | file_len = ftell (binfile); |
7e005732 | 5916 | |
c556cc9c | 5917 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5918 | if (count == 0) |
c556cc9c | 5919 | count = file_len - skip; |
7e005732 | 5920 | |
c556cc9c | 5921 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5922 | { |
c556cc9c | 5923 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5924 | skip, count, file_len); |
7e005732 NC |
5925 | goto done; |
5926 | } | |
5927 | ||
5928 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5929 | { | |
5930 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5931 | goto done; | |
5932 | } | |
5933 | ||
5934 | /* Allocate frag space and store file contents in it. */ | |
5935 | binfrag = frag_more (count); | |
5936 | ||
5937 | bytes = fread (binfrag, 1, count, binfile); | |
5938 | if (bytes < count) | |
5939 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5940 | path, bytes, count); | |
5941 | } | |
dc1e8a47 | 5942 | done: |
7e005732 NC |
5943 | if (binfile != NULL) |
5944 | fclose (binfile); | |
9fbb53c7 | 5945 | free (path); |
7e005732 NC |
5946 | } |
5947 | ||
041ff4dd | 5948 | /* .include -- include a file at this point. */ |
252b5132 | 5949 | |
041ff4dd | 5950 | void |
39e6acbd | 5951 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5952 | { |
252b5132 RH |
5953 | char *filename; |
5954 | int i; | |
1e9cc1c2 | 5955 | FILE *try_file; |
252b5132 RH |
5956 | char *path; |
5957 | ||
041ff4dd | 5958 | if (!flag_m68k_mri) |
252b5132 RH |
5959 | { |
5960 | filename = demand_copy_string (&i); | |
5961 | if (filename == NULL) | |
5962 | { | |
5963 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5964 | called ignore_rest_of_line. */ |
252b5132 RH |
5965 | return; |
5966 | } | |
5967 | } | |
5968 | else | |
5969 | { | |
5970 | SKIP_WHITESPACE (); | |
5971 | i = 0; | |
041ff4dd | 5972 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5973 | && *input_line_pointer != ' ' |
5974 | && *input_line_pointer != '\t') | |
5975 | { | |
5976 | obstack_1grow (¬es, *input_line_pointer); | |
5977 | ++input_line_pointer; | |
5978 | ++i; | |
5979 | } | |
f0e652b4 | 5980 | |
252b5132 | 5981 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5982 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5983 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5984 | ++input_line_pointer; |
5985 | } | |
f0e652b4 | 5986 | |
252b5132 | 5987 | demand_empty_rest_of_line (); |
8860a416 TS |
5988 | path = XNEWVEC (char, (unsigned long) i |
5989 | + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5990 | |
252b5132 RH |
5991 | for (i = 0; i < include_dir_count; i++) |
5992 | { | |
5993 | strcpy (path, include_dirs[i]); | |
5994 | strcat (path, "/"); | |
5995 | strcat (path, filename); | |
1e9cc1c2 | 5996 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 5997 | { |
1e9cc1c2 | 5998 | fclose (try_file); |
252b5132 RH |
5999 | goto gotit; |
6000 | } | |
6001 | } | |
f0e652b4 | 6002 | |
252b5132 RH |
6003 | free (path); |
6004 | path = filename; | |
dc1e8a47 | 6005 | gotit: |
041ff4dd | 6006 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 6007 | register_dependency (path); |
9f10757c | 6008 | input_scrub_insert_file (path); |
041ff4dd | 6009 | } |
252b5132 | 6010 | |
041ff4dd | 6011 | void |
39e6acbd | 6012 | add_include_dir (char *path) |
252b5132 RH |
6013 | { |
6014 | int i; | |
6015 | ||
6016 | if (include_dir_count == 0) | |
6017 | { | |
e0471c16 | 6018 | include_dirs = XNEWVEC (const char *, 2); |
041ff4dd | 6019 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
6020 | include_dir_count = 2; |
6021 | } | |
6022 | else | |
6023 | { | |
6024 | include_dir_count++; | |
e0471c16 TS |
6025 | include_dirs = XRESIZEVEC (const char *, include_dirs, |
6026 | include_dir_count); | |
252b5132 RH |
6027 | } |
6028 | ||
041ff4dd | 6029 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
6030 | |
6031 | i = strlen (path); | |
6032 | if (i > include_dir_maxlen) | |
6033 | include_dir_maxlen = i; | |
041ff4dd | 6034 | } |
252b5132 RH |
6035 | \f |
6036 | /* Output debugging information to denote the source file. */ | |
6037 | ||
6038 | static void | |
39e6acbd | 6039 | generate_file_debug (void) |
252b5132 RH |
6040 | { |
6041 | if (debug_type == DEBUG_STABS) | |
6042 | stabs_generate_asm_file (); | |
6043 | } | |
6044 | ||
6045 | /* Output line number debugging information for the current source line. */ | |
6046 | ||
6047 | void | |
39e6acbd | 6048 | generate_lineno_debug (void) |
252b5132 | 6049 | { |
252b5132 RH |
6050 | switch (debug_type) |
6051 | { | |
6052 | case DEBUG_UNSPECIFIED: | |
6053 | case DEBUG_NONE: | |
4dc7ead9 | 6054 | case DEBUG_DWARF: |
252b5132 RH |
6055 | break; |
6056 | case DEBUG_STABS: | |
6057 | stabs_generate_asm_lineno (); | |
6058 | break; | |
6059 | case DEBUG_ECOFF: | |
6060 | ecoff_generate_asm_lineno (); | |
6061 | break; | |
252b5132 | 6062 | case DEBUG_DWARF2: |
4dc7ead9 RH |
6063 | /* ??? We could here indicate to dwarf2dbg.c that something |
6064 | has changed. However, since there is additional backend | |
6065 | support that is required (calling dwarf2_emit_insn), we | |
6066 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
6067 | break; |
6068 | } | |
6069 | } | |
6070 | ||
6071 | /* Output debugging information to mark a function entry point or end point. | |
6072 | END_P is zero for .func, and non-zero for .endfunc. */ | |
6073 | ||
6074 | void | |
39e6acbd | 6075 | s_func (int end_p) |
252b5132 RH |
6076 | { |
6077 | do_s_func (end_p, NULL); | |
6078 | } | |
6079 | ||
6080 | /* Subroutine of s_func so targets can choose a different default prefix. | |
6081 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
6082 | ||
87c245cc | 6083 | static void |
39e6acbd | 6084 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
6085 | { |
6086 | /* Record the current function so that we can issue an error message for | |
6087 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
6088 | arguments. */ | |
6089 | static char *current_name; | |
6090 | static char *current_label; | |
6091 | ||
6092 | if (end_p) | |
6093 | { | |
6094 | if (current_name == NULL) | |
6095 | { | |
6096 | as_bad (_("missing .func")); | |
6097 | ignore_rest_of_line (); | |
6098 | return; | |
6099 | } | |
6100 | ||
6101 | if (debug_type == DEBUG_STABS) | |
6102 | stabs_generate_asm_endfunc (current_name, current_label); | |
6103 | ||
6104 | current_name = current_label = NULL; | |
6105 | } | |
6106 | else /* ! end_p */ | |
6107 | { | |
041ff4dd NC |
6108 | char *name, *label; |
6109 | char delim1, delim2; | |
252b5132 RH |
6110 | |
6111 | if (current_name != NULL) | |
6112 | { | |
6113 | as_bad (_(".endfunc missing for previous .func")); | |
6114 | ignore_rest_of_line (); | |
6115 | return; | |
6116 | } | |
6117 | ||
d02603dc | 6118 | delim1 = get_symbol_name (& name); |
252b5132 RH |
6119 | name = xstrdup (name); |
6120 | *input_line_pointer = delim1; | |
d02603dc | 6121 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
6122 | if (*input_line_pointer != ',') |
6123 | { | |
6124 | if (default_prefix) | |
05f4ab67 AM |
6125 | { |
6126 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
6127 | as_fatal ("%s", xstrerror (errno)); | |
6128 | } | |
252b5132 RH |
6129 | else |
6130 | { | |
7be1c489 | 6131 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
6132 | /* Missing entry point, use function's name with the leading |
6133 | char prepended. */ | |
6134 | if (leading_char) | |
05f4ab67 AM |
6135 | { |
6136 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
6137 | as_fatal ("%s", xstrerror (errno)); | |
6138 | } | |
252b5132 RH |
6139 | else |
6140 | label = name; | |
6141 | } | |
6142 | } | |
6143 | else | |
6144 | { | |
6145 | ++input_line_pointer; | |
6146 | SKIP_WHITESPACE (); | |
d02603dc | 6147 | delim2 = get_symbol_name (& label); |
252b5132 | 6148 | label = xstrdup (label); |
d02603dc | 6149 | restore_line_pointer (delim2); |
252b5132 RH |
6150 | } |
6151 | ||
6152 | if (debug_type == DEBUG_STABS) | |
6153 | stabs_generate_asm_func (name, label); | |
6154 | ||
6155 | current_name = name; | |
6156 | current_label = label; | |
6157 | } | |
6158 | ||
6159 | demand_empty_rest_of_line (); | |
6160 | } | |
6161 | \f | |
fa94de6b RM |
6162 | #ifdef HANDLE_BUNDLE |
6163 | ||
6164 | void | |
6165 | s_bundle_align_mode (int arg ATTRIBUTE_UNUSED) | |
6166 | { | |
6167 | unsigned int align = get_absolute_expression (); | |
6168 | SKIP_WHITESPACE (); | |
6169 | demand_empty_rest_of_line (); | |
6170 | ||
6171 | if (align > (unsigned int) TC_ALIGN_LIMIT) | |
6172 | as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"), | |
6173 | (unsigned int) TC_ALIGN_LIMIT); | |
6174 | ||
6175 | if (bundle_lock_frag != NULL) | |
6176 | { | |
6177 | as_bad (_("cannot change .bundle_align_mode inside .bundle_lock")); | |
6178 | return; | |
6179 | } | |
6180 | ||
6181 | bundle_align_p2 = align; | |
6182 | } | |
6183 | ||
6184 | void | |
6185 | s_bundle_lock (int arg ATTRIBUTE_UNUSED) | |
6186 | { | |
6187 | demand_empty_rest_of_line (); | |
6188 | ||
6189 | if (bundle_align_p2 == 0) | |
6190 | { | |
6191 | as_bad (_(".bundle_lock is meaningless without .bundle_align_mode")); | |
6192 | return; | |
6193 | } | |
6194 | ||
d416e51d | 6195 | if (bundle_lock_depth == 0) |
fa94de6b | 6196 | { |
d416e51d RM |
6197 | bundle_lock_frchain = frchain_now; |
6198 | bundle_lock_frag = start_bundle (); | |
fa94de6b | 6199 | } |
d416e51d | 6200 | ++bundle_lock_depth; |
fa94de6b RM |
6201 | } |
6202 | ||
6203 | void | |
6204 | s_bundle_unlock (int arg ATTRIBUTE_UNUSED) | |
6205 | { | |
6206 | unsigned int size; | |
6207 | ||
6208 | demand_empty_rest_of_line (); | |
6209 | ||
6210 | if (bundle_lock_frag == NULL) | |
6211 | { | |
6212 | as_bad (_(".bundle_unlock without preceding .bundle_lock")); | |
6213 | return; | |
6214 | } | |
6215 | ||
6216 | gas_assert (bundle_align_p2 > 0); | |
6217 | ||
d416e51d RM |
6218 | gas_assert (bundle_lock_depth > 0); |
6219 | if (--bundle_lock_depth > 0) | |
6220 | return; | |
6221 | ||
fa94de6b RM |
6222 | size = pending_bundle_size (bundle_lock_frag); |
6223 | ||
e54e9ac5 AM |
6224 | if (size > 1U << bundle_align_p2) |
6225 | as_bad (_(".bundle_lock sequence is %u bytes, " | |
6226 | "but bundle size is only %u bytes"), | |
6227 | size, 1u << bundle_align_p2); | |
fa94de6b RM |
6228 | else |
6229 | finish_bundle (bundle_lock_frag, size); | |
6230 | ||
6231 | bundle_lock_frag = NULL; | |
6232 | bundle_lock_frchain = NULL; | |
6233 | } | |
6234 | ||
6235 | #endif /* HANDLE_BUNDLE */ | |
6236 | \f | |
041ff4dd | 6237 | void |
39e6acbd | 6238 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6239 | { |
40a4d956 | 6240 | ignore_rest_of_line (); |
252b5132 RH |
6241 | } |
6242 | ||
252b5132 | 6243 | void |
39e6acbd | 6244 | read_print_statistics (FILE *file) |
252b5132 | 6245 | { |
32e4c1c2 | 6246 | htab_print_statistics (file, "pseudo-op table", po_hash); |
252b5132 RH |
6247 | } |
6248 | ||
041ff4dd NC |
6249 | /* Inserts the given line into the input stream. |
6250 | ||
9f10757c TW |
6251 | This call avoids macro/conditionals nesting checking, since the contents of |
6252 | the line are assumed to replace the contents of a line already scanned. | |
6253 | ||
47eebc20 | 6254 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
6255 | called by md_start_line_hook(). The given line is assumed to already be |
6256 | properly scrubbed. */ | |
6257 | ||
6258 | void | |
39e6acbd | 6259 | input_scrub_insert_line (const char *line) |
9f10757c TW |
6260 | { |
6261 | sb newline; | |
d2ae702c L |
6262 | size_t len = strlen (line); |
6263 | sb_build (&newline, len); | |
6264 | sb_add_buffer (&newline, line, len); | |
9f10757c TW |
6265 | input_scrub_include_sb (&newline, input_line_pointer, 0); |
6266 | sb_kill (&newline); | |
6267 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6268 | } | |
6269 | ||
6270 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 6271 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
6272 | |
6273 | void | |
39e6acbd | 6274 | input_scrub_insert_file (char *path) |
9f10757c TW |
6275 | { |
6276 | input_scrub_include_file (path, input_line_pointer); | |
6277 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6278 | } | |
40a4d956 JB |
6279 | |
6280 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
6281 | ||
6282 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
6283 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
6284 | #endif | |
6285 | ||
6286 | static char * | |
7592cfd7 NC |
6287 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
6288 | int in_macro) | |
40a4d956 JB |
6289 | { |
6290 | char inquote = '\0'; | |
6291 | int inescape = 0; | |
6292 | ||
6293 | while (!is_end_of_line[(unsigned char) *s] | |
6294 | || (inquote && !ISCNTRL (*s)) | |
6295 | || (inquote == '\'' && flag_mri) | |
6296 | #ifdef TC_EOL_IN_INSN | |
6297 | || (insn && TC_EOL_IN_INSN (s)) | |
6298 | #endif | |
7592cfd7 NC |
6299 | /* PR 6926: When we are parsing the body of a macro the sequence |
6300 | \@ is special - it refers to the invocation count. If the @ | |
6301 | character happens to be registered as a line-separator character | |
6302 | by the target, then the is_end_of_line[] test above will have | |
6303 | returned true, but we need to ignore the line separating | |
6304 | semantics in this particular case. */ | |
6305 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
6306 | ) |
6307 | { | |
6308 | if (mri_string && *s == '\'') | |
6309 | inquote ^= *s; | |
6310 | else if (inescape) | |
6311 | inescape = 0; | |
6312 | else if (*s == '\\') | |
6313 | inescape = 1; | |
6314 | else if (!inquote | |
6315 | ? *s == '"' | |
6316 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
6317 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
6318 | #endif | |
6319 | : *s == inquote) | |
6320 | inquote ^= *s; | |
6321 | ++s; | |
6322 | } | |
6323 | if (inquote) | |
6324 | as_warn (_("missing closing `%c'"), inquote); | |
e74211b6 | 6325 | if (inescape && !ignore_input ()) |
40a4d956 JB |
6326 | as_warn (_("stray `\\'")); |
6327 | return s; | |
6328 | } | |
6329 | ||
6330 | char * | |
6331 | find_end_of_line (char *s, int mri_string) | |
6332 | { | |
7592cfd7 | 6333 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 6334 | } |
1181551e NC |
6335 | |
6336 | static char *saved_ilp = NULL; | |
6337 | static char *saved_limit; | |
6338 | ||
6339 | /* Use BUF as a temporary input pointer for calling other functions in this | |
6340 | file. BUF must be a C string, so that its end can be found by strlen. | |
6341 | Also sets the buffer_limit variable (local to this file) so that buffer | |
6342 | overruns should not occur. Saves the current input line pointer so that | |
6343 | it can be restored by calling restore_ilp(). | |
6344 | ||
af60449c | 6345 | Does not support recursion. */ |
1181551e NC |
6346 | |
6347 | void | |
6348 | temp_ilp (char *buf) | |
6349 | { | |
6350 | gas_assert (saved_ilp == NULL); | |
6351 | gas_assert (buf != NULL); | |
6352 | ||
6353 | saved_ilp = input_line_pointer; | |
6354 | saved_limit = buffer_limit; | |
6355 | /* Prevent the assert in restore_ilp from triggering if | |
6356 | the input_line_pointer has not yet been initialised. */ | |
6357 | if (saved_ilp == NULL) | |
6358 | saved_limit = saved_ilp = (char *) ""; | |
6359 | ||
6360 | input_line_pointer = buf; | |
6361 | buffer_limit = buf + strlen (buf); | |
2469b3c5 | 6362 | input_from_string = TRUE; |
1181551e NC |
6363 | } |
6364 | ||
6365 | /* Restore a saved input line pointer. */ | |
6366 | ||
6367 | void | |
6368 | restore_ilp (void) | |
6369 | { | |
6370 | gas_assert (saved_ilp != NULL); | |
6371 | ||
6372 | input_line_pointer = saved_ilp; | |
6373 | buffer_limit = saved_limit; | |
2469b3c5 | 6374 | input_from_string = FALSE; |
1181551e NC |
6375 | |
6376 | saved_ilp = NULL; | |
6377 | } |