Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
4b95cf5c | 2 | Copyright (C) 1986-2014 Free Software Foundation, Inc. |
252b5132 | 3 | |
ec2655a6 | 4 | This file is part of GAS, the GNU Assembler. |
252b5132 | 5 | |
ec2655a6 NC |
6 | GAS is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
252b5132 | 10 | |
ec2655a6 NC |
11 | GAS is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
252b5132 | 15 | |
ec2655a6 NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
252b5132 | 20 | |
59c871b4 | 21 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
041ff4dd NC |
22 | But then, GNU isn't spozed to run on your machine anyway. |
23 | (RMS is so shortsighted sometimes.) */ | |
041ff4dd | 24 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 25 | |
252b5132 | 26 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 27 | grow when we do 4361 style flonums. */ |
252b5132 RH |
28 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
29 | ||
47eebc20 | 30 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
31 | Another group of these functions is in the expr.c module. */ |
32 | ||
252b5132 | 33 | #include "as.h" |
3882b010 | 34 | #include "safe-ctype.h" |
252b5132 RH |
35 | #include "subsegs.h" |
36 | #include "sb.h" | |
37 | #include "macro.h" | |
38 | #include "obstack.h" | |
252b5132 | 39 | #include "ecoff.h" |
54cfded0 | 40 | #include "dw2gencfi.h" |
7bfd842d | 41 | #include "wchar.h" |
252b5132 RH |
42 | |
43 | #ifndef TC_START_LABEL | |
5e8c8f8f | 44 | #define TC_START_LABEL(x,y,z) (x == ':') |
252b5132 RH |
45 | #endif |
46 | ||
8684e216 HPN |
47 | /* Set by the object-format or the target. */ |
48 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 49 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 50 | do \ |
d6415f6c AM |
51 | { \ |
52 | if ((SIZE) >= 8) \ | |
53 | (P2VAR) = 3; \ | |
54 | else if ((SIZE) >= 4) \ | |
55 | (P2VAR) = 2; \ | |
56 | else if ((SIZE) >= 2) \ | |
57 | (P2VAR) = 1; \ | |
58 | else \ | |
59 | (P2VAR) = 0; \ | |
041ff4dd NC |
60 | } \ |
61 | while (0) | |
8684e216 HPN |
62 | #endif |
63 | ||
041ff4dd | 64 | char *input_line_pointer; /*->next char of source file to parse. */ |
252b5132 RH |
65 | |
66 | #if BITS_PER_CHAR != 8 | |
67 | /* The following table is indexed by[(char)] and will break if | |
68 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
69 | die horribly; | |
70 | #endif | |
71 | ||
72 | #ifndef LEX_AT | |
252b5132 RH |
73 | #define LEX_AT 0 |
74 | #endif | |
75 | ||
76 | #ifndef LEX_BR | |
77 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
78 | #define LEX_BR 0 | |
79 | #endif | |
80 | ||
81 | #ifndef LEX_PCT | |
82 | /* The Delta 68k assembler permits % inside label names. */ | |
83 | #define LEX_PCT 0 | |
84 | #endif | |
85 | ||
86 | #ifndef LEX_QM | |
87 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
88 | #define LEX_QM 0 | |
89 | #endif | |
90 | ||
58b5739a | 91 | #ifndef LEX_HASH |
800eeca4 JW |
92 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
93 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
94 | #define LEX_HASH 0 |
95 | #endif | |
96 | ||
252b5132 | 97 | #ifndef LEX_DOLLAR |
252b5132 RH |
98 | #define LEX_DOLLAR 3 |
99 | #endif | |
100 | ||
101 | #ifndef LEX_TILDE | |
102 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
103 | #define LEX_TILDE 0 | |
104 | #endif | |
105 | ||
041ff4dd | 106 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 107 | char lex_type[256] = { |
252b5132 RH |
108 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
109 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 110 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
111 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
112 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
113 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
114 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 115 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
116 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
117 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
118 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
124 | }; | |
125 | ||
041ff4dd | 126 | /* In: a character. |
d67ffd56 L |
127 | Out: 1 if this character ends a line. |
128 | 2 if this character is a line separator. */ | |
ef99799a | 129 | char is_end_of_line[256] = { |
252b5132 | 130 | #ifdef CR_EOL |
b75c0c92 | 131 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 132 | #else |
b75c0c92 | 133 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 134 | #endif |
b75c0c92 AM |
135 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
136 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 137 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 150 | }; |
252b5132 | 151 | |
a8a3b3b2 | 152 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
153 | char original_case_string[128]; |
154 | #endif | |
155 | ||
041ff4dd | 156 | /* Functions private to this file. */ |
252b5132 | 157 | |
041ff4dd NC |
158 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
159 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 160 | |
041ff4dd NC |
161 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
162 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
163 | internals manual. */ | |
252b5132 RH |
164 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
165 | ||
041ff4dd | 166 | /* Variables for handling include file directory table. */ |
252b5132 | 167 | |
041ff4dd NC |
168 | /* Table of pointers to directories to search for .include's. */ |
169 | char **include_dirs; | |
170 | ||
171 | /* How many are in the table. */ | |
172 | int include_dir_count; | |
173 | ||
174 | /* Length of longest in table. */ | |
175 | int include_dir_maxlen = 1; | |
252b5132 RH |
176 | |
177 | #ifndef WORKING_DOT_WORD | |
178 | struct broken_word *broken_words; | |
179 | int new_broken_words; | |
180 | #endif | |
181 | ||
182 | /* The current offset into the absolute section. We don't try to | |
183 | build frags in the absolute section, since no data can be stored | |
184 | there. We just keep track of the current offset. */ | |
185 | addressT abs_section_offset; | |
186 | ||
187 | /* If this line had an MRI style label, it is stored in this variable. | |
188 | This is used by some of the MRI pseudo-ops. */ | |
189 | symbolS *line_label; | |
190 | ||
191 | /* This global variable is used to support MRI common sections. We | |
192 | translate such sections into a common symbol. This variable is | |
193 | non-NULL when we are in an MRI common section. */ | |
194 | symbolS *mri_common_symbol; | |
195 | ||
196 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
197 | need to align to an even byte boundary unless the next pseudo-op is | |
198 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
199 | may be needed. */ | |
200 | static int mri_pending_align; | |
201 | ||
202 | #ifndef NO_LISTING | |
203 | #ifdef OBJ_ELF | |
204 | /* This variable is set to be non-zero if the next string we see might | |
205 | be the name of the source file in DWARF debugging information. See | |
206 | the comment in emit_expr for the format we look for. */ | |
207 | static int dwarf_file_string; | |
208 | #endif | |
209 | #endif | |
210 | ||
fa94de6b RM |
211 | /* If the target defines the md_frag_max_var hook then we know |
212 | enough to implement the .bundle_align_mode features. */ | |
213 | #ifdef md_frag_max_var | |
214 | # define HANDLE_BUNDLE | |
215 | #endif | |
216 | ||
217 | #ifdef HANDLE_BUNDLE | |
218 | /* .bundle_align_mode sets this. Normally it's zero. When nonzero, | |
219 | it's the exponent of the bundle size, and aligned instruction bundle | |
220 | mode is in effect. */ | |
221 | static unsigned int bundle_align_p2; | |
222 | ||
223 | /* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets | |
224 | bundle_lock_frag to frag_now and then starts a new frag with | |
225 | frag_align_code. At the same time, bundle_lock_frain gets frchain_now, | |
226 | so that .bundle_unlock can verify that we didn't change segments. | |
227 | .bundle_unlock resets both to NULL. If we detect a bundling violation, | |
228 | then we reset bundle_lock_frchain to NULL as an indicator that we've | |
229 | already diagnosed the error with as_bad and don't need a cascade of | |
230 | redundant errors, but bundle_lock_frag remains set to indicate that | |
231 | we are expecting to see .bundle_unlock. */ | |
232 | static fragS *bundle_lock_frag; | |
233 | static frchainS *bundle_lock_frchain; | |
d416e51d RM |
234 | |
235 | /* This is incremented by .bundle_lock and decremented by .bundle_unlock, | |
236 | to allow nesting. */ | |
237 | static unsigned int bundle_lock_depth; | |
fa94de6b RM |
238 | #endif |
239 | ||
87c245cc | 240 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd KH |
241 | static void do_align (int, char *, int, int); |
242 | static void s_align (int, int); | |
caa32fe5 | 243 | static void s_altmacro (int); |
057f53c1 | 244 | static void s_bad_end (int); |
05e9452c | 245 | static void s_reloc (int); |
39e6acbd | 246 | static int hex_float (int, char *); |
39e6acbd KH |
247 | static segT get_known_segmented_expression (expressionS * expP); |
248 | static void pobegin (void); | |
39a45edc | 249 | static size_t get_non_macro_line_sb (sb *); |
39e6acbd | 250 | static void generate_file_debug (void); |
7592cfd7 | 251 | static char *_find_end_of_line (char *, int, int, int); |
252b5132 | 252 | \f |
252b5132 | 253 | void |
39e6acbd | 254 | read_begin (void) |
252b5132 RH |
255 | { |
256 | const char *p; | |
257 | ||
258 | pobegin (); | |
259 | obj_read_begin_hook (); | |
260 | ||
261 | /* Something close -- but not too close -- to a multiple of 1024. | |
262 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
263 | obstack_begin (¬es, chunksize); | |
264 | obstack_begin (&cond_obstack, chunksize); | |
265 | ||
2e6976a8 DG |
266 | #ifndef tc_line_separator_chars |
267 | #define tc_line_separator_chars line_separator_chars | |
268 | #endif | |
041ff4dd | 269 | /* Use machine dependent syntax. */ |
2e6976a8 | 270 | for (p = tc_line_separator_chars; *p; p++) |
d67ffd56 | 271 | is_end_of_line[(unsigned char) *p] = 2; |
041ff4dd | 272 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
273 | |
274 | if (flag_mri) | |
275 | lex_type['?'] = 3; | |
276 | } | |
277 | \f | |
cc1bc22a | 278 | #ifndef TC_ADDRESS_BYTES |
cc1bc22a AM |
279 | #define TC_ADDRESS_BYTES address_bytes |
280 | ||
281 | static inline int | |
282 | address_bytes (void) | |
283 | { | |
284 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
285 | contain an address. */ | |
286 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
287 | n |= n >> 1; | |
288 | n |= n >> 2; | |
289 | n += 1; | |
290 | return n; | |
291 | } | |
292 | #endif | |
cc1bc22a | 293 | |
041ff4dd | 294 | /* Set up pseudo-op tables. */ |
252b5132 RH |
295 | |
296 | static struct hash_control *po_hash; | |
297 | ||
ef99799a | 298 | static const pseudo_typeS potable[] = { |
252b5132 RH |
299 | {"abort", s_abort, 0}, |
300 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 301 | {"altmacro", s_altmacro, 1}, |
38a57ae7 NC |
302 | {"ascii", stringer, 8+0}, |
303 | {"asciz", stringer, 8+1}, | |
252b5132 RH |
304 | {"balign", s_align_bytes, 0}, |
305 | {"balignw", s_align_bytes, -2}, | |
306 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 307 | /* block */ |
fa94de6b RM |
308 | #ifdef HANDLE_BUNDLE |
309 | {"bundle_align_mode", s_bundle_align_mode, 0}, | |
310 | {"bundle_lock", s_bundle_lock, 0}, | |
311 | {"bundle_unlock", s_bundle_unlock, 0}, | |
312 | #endif | |
252b5132 RH |
313 | {"byte", cons, 1}, |
314 | {"comm", s_comm, 0}, | |
315 | {"common", s_mri_common, 0}, | |
316 | {"common.s", s_mri_common, 1}, | |
317 | {"data", s_data, 0}, | |
318 | {"dc", cons, 2}, | |
cc1bc22a AM |
319 | #ifdef TC_ADDRESS_BYTES |
320 | {"dc.a", cons, 0}, | |
321 | #endif | |
252b5132 RH |
322 | {"dc.b", cons, 1}, |
323 | {"dc.d", float_cons, 'd'}, | |
324 | {"dc.l", cons, 4}, | |
325 | {"dc.s", float_cons, 'f'}, | |
326 | {"dc.w", cons, 2}, | |
327 | {"dc.x", float_cons, 'x'}, | |
328 | {"dcb", s_space, 2}, | |
329 | {"dcb.b", s_space, 1}, | |
330 | {"dcb.d", s_float_space, 'd'}, | |
331 | {"dcb.l", s_space, 4}, | |
332 | {"dcb.s", s_float_space, 'f'}, | |
333 | {"dcb.w", s_space, 2}, | |
334 | {"dcb.x", s_float_space, 'x'}, | |
335 | {"ds", s_space, 2}, | |
336 | {"ds.b", s_space, 1}, | |
337 | {"ds.d", s_space, 8}, | |
338 | {"ds.l", s_space, 4}, | |
339 | {"ds.p", s_space, 12}, | |
340 | {"ds.s", s_space, 4}, | |
341 | {"ds.w", s_space, 2}, | |
342 | {"ds.x", s_space, 12}, | |
343 | {"debug", s_ignore, 0}, | |
344 | #ifdef S_SET_DESC | |
345 | {"desc", s_desc, 0}, | |
346 | #endif | |
041ff4dd | 347 | /* dim */ |
252b5132 | 348 | {"double", float_cons, 'd'}, |
041ff4dd NC |
349 | /* dsect */ |
350 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
351 | {"else", s_else, 0}, |
352 | {"elsec", s_else, 0}, | |
3fd9f047 | 353 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
354 | {"end", s_end, 0}, |
355 | {"endc", s_endif, 0}, | |
356 | {"endfunc", s_func, 1}, | |
357 | {"endif", s_endif, 0}, | |
057f53c1 JB |
358 | {"endm", s_bad_end, 0}, |
359 | {"endr", s_bad_end, 1}, | |
041ff4dd | 360 | /* endef */ |
252b5132 RH |
361 | {"equ", s_set, 0}, |
362 | {"equiv", s_set, 1}, | |
9497f5ac | 363 | {"eqv", s_set, -1}, |
252b5132 | 364 | {"err", s_err, 0}, |
d190d046 | 365 | {"error", s_errwarn, 1}, |
252b5132 | 366 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
367 | /* extend */ |
368 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 | 369 | {"appfile", s_app_file, 1}, |
93e914b2 | 370 | {"appline", s_app_line, 1}, |
252b5132 RH |
371 | {"fail", s_fail, 0}, |
372 | {"file", s_app_file, 0}, | |
373 | {"fill", s_fill, 0}, | |
374 | {"float", float_cons, 'f'}, | |
375 | {"format", s_ignore, 0}, | |
376 | {"func", s_func, 0}, | |
377 | {"global", s_globl, 0}, | |
378 | {"globl", s_globl, 0}, | |
379 | {"hword", cons, 2}, | |
380 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 381 | {"ifb", s_ifb, 1}, |
252b5132 RH |
382 | {"ifc", s_ifc, 0}, |
383 | {"ifdef", s_ifdef, 0}, | |
384 | {"ifeq", s_if, (int) O_eq}, | |
385 | {"ifeqs", s_ifeqs, 0}, | |
386 | {"ifge", s_if, (int) O_ge}, | |
387 | {"ifgt", s_if, (int) O_gt}, | |
388 | {"ifle", s_if, (int) O_le}, | |
389 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 390 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
391 | {"ifnc", s_ifc, 1}, |
392 | {"ifndef", s_ifdef, 1}, | |
393 | {"ifne", s_if, (int) O_ne}, | |
394 | {"ifnes", s_ifeqs, 1}, | |
395 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 396 | {"incbin", s_incbin, 0}, |
252b5132 RH |
397 | {"include", s_include, 0}, |
398 | {"int", cons, 4}, | |
399 | {"irp", s_irp, 0}, | |
400 | {"irep", s_irp, 0}, | |
401 | {"irpc", s_irp, 1}, | |
402 | {"irepc", s_irp, 1}, | |
403 | {"lcomm", s_lcomm, 0}, | |
c2069bb2 | 404 | {"lflags", s_ignore, 0}, /* Listing flags. */ |
93e914b2 | 405 | {"linefile", s_app_line, 0}, |
252b5132 | 406 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 407 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
408 | {"llen", listing_psize, 1}, |
409 | {"long", cons, 4}, | |
410 | {"lsym", s_lsym, 0}, | |
411 | {"macro", s_macro, 0}, | |
412 | {"mexit", s_mexit, 0}, | |
413 | {"mri", s_mri, 0}, | |
414 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
415 | {"name", s_ignore, 0}, | |
caa32fe5 | 416 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 417 | {"noformat", s_ignore, 0}, |
041ff4dd | 418 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
419 | {"nopage", listing_nopage, 0}, |
420 | {"octa", cons, 16}, | |
421 | {"offset", s_struct, 0}, | |
422 | {"org", s_org, 0}, | |
423 | {"p2align", s_align_ptwo, 0}, | |
424 | {"p2alignw", s_align_ptwo, -2}, | |
425 | {"p2alignl", s_align_ptwo, -4}, | |
426 | {"page", listing_eject, 0}, | |
427 | {"plen", listing_psize, 0}, | |
428 | {"print", s_print, 0}, | |
041ff4dd | 429 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
430 | {"purgem", s_purgem, 0}, |
431 | {"quad", cons, 8}, | |
05e9452c | 432 | {"reloc", s_reloc, 0}, |
252b5132 RH |
433 | {"rep", s_rept, 0}, |
434 | {"rept", s_rept, 0}, | |
435 | {"rva", s_rva, 4}, | |
041ff4dd NC |
436 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
437 | /* scl */ | |
438 | /* sect */ | |
252b5132 RH |
439 | {"set", s_set, 0}, |
440 | {"short", cons, 2}, | |
441 | {"single", float_cons, 'f'}, | |
041ff4dd | 442 | /* size */ |
252b5132 RH |
443 | {"space", s_space, 0}, |
444 | {"skip", s_space, 0}, | |
445 | {"sleb128", s_leb128, 1}, | |
446 | {"spc", s_ignore, 0}, | |
447 | {"stabd", s_stab, 'd'}, | |
448 | {"stabn", s_stab, 'n'}, | |
449 | {"stabs", s_stab, 's'}, | |
38a57ae7 NC |
450 | {"string", stringer, 8+1}, |
451 | {"string8", stringer, 8+1}, | |
452 | {"string16", stringer, 16+1}, | |
453 | {"string32", stringer, 32+1}, | |
454 | {"string64", stringer, 64+1}, | |
252b5132 | 455 | {"struct", s_struct, 0}, |
041ff4dd | 456 | /* tag */ |
252b5132 RH |
457 | {"text", s_text, 0}, |
458 | ||
459 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
460 | won't be able to use it for a while -- probably a year or more. | |
461 | But once this has been released, check with gcc maintainers | |
462 | before deleting it or even changing the spelling. */ | |
463 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
464 | /* If we're folding case -- done for some targets, not necessarily | |
465 | all -- the above string in an input file will be converted to | |
466 | this one. Match it either way... */ | |
467 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
468 | ||
041ff4dd | 469 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 470 | {"ttl", listing_title, 0}, |
041ff4dd | 471 | /* type */ |
252b5132 | 472 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
473 | /* use */ |
474 | /* val */ | |
252b5132 RH |
475 | {"xcom", s_comm, 0}, |
476 | {"xdef", s_globl, 0}, | |
477 | {"xref", s_ignore, 0}, | |
478 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 479 | {"warning", s_errwarn, 0}, |
06e77878 | 480 | {"weakref", s_weakref, 0}, |
252b5132 RH |
481 | {"word", cons, 2}, |
482 | {"zero", s_space, 0}, | |
041ff4dd | 483 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
484 | }; |
485 | ||
87c245cc BE |
486 | static offsetT |
487 | get_absolute_expr (expressionS *exp) | |
488 | { | |
9497f5ac | 489 | expression_and_evaluate (exp); |
87c245cc BE |
490 | if (exp->X_op != O_constant) |
491 | { | |
492 | if (exp->X_op != O_absent) | |
493 | as_bad (_("bad or irreducible absolute expression")); | |
494 | exp->X_add_number = 0; | |
495 | } | |
496 | return exp->X_add_number; | |
497 | } | |
498 | ||
499 | offsetT | |
500 | get_absolute_expression (void) | |
501 | { | |
502 | expressionS exp; | |
503 | ||
504 | return get_absolute_expr (&exp); | |
505 | } | |
506 | ||
252b5132 RH |
507 | static int pop_override_ok = 0; |
508 | static const char *pop_table_name; | |
509 | ||
510 | void | |
39e6acbd | 511 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
512 | { |
513 | const char *errtxt; | |
514 | const pseudo_typeS *pop; | |
515 | for (pop = table; pop->poc_name; pop++) | |
516 | { | |
517 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
518 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
519 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
520 | errtxt); | |
521 | } | |
522 | } | |
523 | ||
524 | #ifndef md_pop_insert | |
525 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
526 | #endif | |
527 | ||
528 | #ifndef obj_pop_insert | |
529 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
530 | #endif | |
531 | ||
54cfded0 AM |
532 | #ifndef cfi_pop_insert |
533 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
534 | #endif | |
535 | ||
041ff4dd | 536 | static void |
39e6acbd | 537 | pobegin (void) |
252b5132 RH |
538 | { |
539 | po_hash = hash_new (); | |
540 | ||
041ff4dd | 541 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
542 | pop_table_name = "md"; |
543 | md_pop_insert (); | |
544 | ||
041ff4dd | 545 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
546 | pop_table_name = "obj"; |
547 | pop_override_ok = 1; | |
548 | obj_pop_insert (); | |
549 | ||
041ff4dd | 550 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
551 | pop_table_name = "standard"; |
552 | pop_insert (potable); | |
d6415f6c | 553 | |
d58a1929 | 554 | /* Now CFI ones. */ |
54cfded0 AM |
555 | pop_table_name = "cfi"; |
556 | pop_override_ok = 1; | |
557 | cfi_pop_insert (); | |
252b5132 RH |
558 | } |
559 | \f | |
560 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
561 | if (ignore_input ()) \ | |
562 | { \ | |
7592cfd7 | 563 | char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \ |
40a4d956 JB |
564 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
565 | && eol >= buffer_limit) \ | |
566 | ? buffer_limit \ | |
567 | : eol + 1; \ | |
252b5132 RH |
568 | continue; \ |
569 | } | |
570 | ||
252b5132 RH |
571 | /* This function is used when scrubbing the characters between #APP |
572 | and #NO_APP. */ | |
573 | ||
574 | static char *scrub_string; | |
575 | static char *scrub_string_end; | |
576 | ||
39a45edc AM |
577 | static size_t |
578 | scrub_from_string (char *buf, size_t buflen) | |
252b5132 | 579 | { |
39a45edc | 580 | size_t copy; |
2b47531b ILT |
581 | |
582 | copy = scrub_string_end - scrub_string; | |
583 | if (copy > buflen) | |
584 | copy = buflen; | |
585 | memcpy (buf, scrub_string, copy); | |
586 | scrub_string += copy; | |
587 | return copy; | |
252b5132 RH |
588 | } |
589 | ||
5e75c3ab JB |
590 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
591 | static int | |
592 | try_macro (char term, const char *line) | |
593 | { | |
594 | sb out; | |
595 | const char *err; | |
596 | macro_entry *macro; | |
597 | ||
598 | if (check_macro (line, &out, &err, ¯o)) | |
599 | { | |
600 | if (err != NULL) | |
601 | as_bad ("%s", err); | |
602 | *input_line_pointer++ = term; | |
603 | input_scrub_include_sb (&out, | |
604 | input_line_pointer, 1); | |
605 | sb_kill (&out); | |
606 | buffer_limit = | |
607 | input_scrub_next_buffer (&input_line_pointer); | |
608 | #ifdef md_macro_info | |
609 | md_macro_info (macro); | |
610 | #endif | |
611 | return 1; | |
612 | } | |
613 | return 0; | |
614 | } | |
615 | ||
fa94de6b RM |
616 | #ifdef HANDLE_BUNDLE |
617 | /* Start a new instruction bundle. Returns the rs_align_code frag that | |
618 | will be used to align the new bundle. */ | |
619 | static fragS * | |
620 | start_bundle (void) | |
621 | { | |
622 | fragS *frag = frag_now; | |
623 | ||
624 | frag_align_code (0, 0); | |
625 | ||
626 | while (frag->fr_type != rs_align_code) | |
627 | frag = frag->fr_next; | |
628 | ||
629 | gas_assert (frag != frag_now); | |
630 | ||
631 | return frag; | |
632 | } | |
633 | ||
634 | /* Calculate the maximum size after relaxation of the region starting | |
635 | at the given frag and extending through frag_now (which is unfinished). */ | |
636 | static unsigned int | |
637 | pending_bundle_size (fragS *frag) | |
638 | { | |
639 | unsigned int offset = frag->fr_fix; | |
640 | unsigned int size = 0; | |
641 | ||
642 | gas_assert (frag != frag_now); | |
643 | gas_assert (frag->fr_type == rs_align_code); | |
644 | ||
645 | while (frag != frag_now) | |
646 | { | |
647 | /* This should only happen in what will later become an error case. */ | |
648 | if (frag == NULL) | |
649 | return 0; | |
650 | ||
651 | size += frag->fr_fix; | |
652 | if (frag->fr_type == rs_machine_dependent) | |
653 | size += md_frag_max_var (frag); | |
654 | ||
655 | frag = frag->fr_next; | |
656 | } | |
657 | ||
658 | gas_assert (frag == frag_now); | |
659 | size += frag_now_fix (); | |
660 | if (frag->fr_type == rs_machine_dependent) | |
661 | size += md_frag_max_var (frag); | |
662 | ||
663 | gas_assert (size >= offset); | |
664 | ||
665 | return size - offset; | |
666 | } | |
667 | ||
668 | /* Finish off the frag created to ensure bundle alignment. */ | |
669 | static void | |
670 | finish_bundle (fragS *frag, unsigned int size) | |
671 | { | |
672 | gas_assert (bundle_align_p2 > 0); | |
673 | gas_assert (frag->fr_type == rs_align_code); | |
674 | ||
675 | if (size > 1) | |
676 | { | |
677 | /* If there is more than a single byte, then we need to set up the | |
678 | alignment frag. Otherwise we leave it at its initial state from | |
679 | calling frag_align_code (0, 0), so that it does nothing. */ | |
680 | frag->fr_offset = bundle_align_p2; | |
681 | frag->fr_subtype = size - 1; | |
682 | } | |
683 | ||
684 | /* We do this every time rather than just in s_bundle_align_mode | |
685 | so that we catch any affected section without needing hooks all | |
686 | over for all paths that do section changes. It's cheap enough. */ | |
687 | record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER); | |
688 | } | |
689 | ||
690 | /* Assemble one instruction. This takes care of the bundle features | |
691 | around calling md_assemble. */ | |
692 | static void | |
693 | assemble_one (char *line) | |
694 | { | |
8d3eaee6 | 695 | fragS *insn_start_frag = NULL; |
fa94de6b RM |
696 | |
697 | if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now) | |
698 | { | |
699 | as_bad (_("cannot change section or subsection inside .bundle_lock")); | |
700 | /* Clearing this serves as a marker that we have already complained. */ | |
701 | bundle_lock_frchain = NULL; | |
702 | } | |
703 | ||
704 | if (bundle_lock_frchain == NULL && bundle_align_p2 > 0) | |
705 | insn_start_frag = start_bundle (); | |
706 | ||
707 | md_assemble (line); | |
708 | ||
709 | if (bundle_lock_frchain != NULL) | |
710 | { | |
711 | /* Make sure this hasn't pushed the locked sequence | |
712 | past the bundle size. */ | |
713 | unsigned int bundle_size = pending_bundle_size (bundle_lock_frag); | |
714 | if (bundle_size > (1U << bundle_align_p2)) | |
715 | as_bad (_("\ | |
716 | .bundle_lock sequence at %u bytes but .bundle_align_mode limit is %u bytes"), | |
717 | bundle_size, 1U << bundle_align_p2); | |
718 | } | |
719 | else if (bundle_align_p2 > 0) | |
720 | { | |
721 | unsigned int insn_size = pending_bundle_size (insn_start_frag); | |
722 | ||
723 | if (insn_size > (1U << bundle_align_p2)) | |
724 | as_bad (_("\ | |
725 | single instruction is %u bytes long but .bundle_align_mode limit is %u"), | |
726 | (unsigned int) insn_size, 1U << bundle_align_p2); | |
727 | ||
728 | finish_bundle (insn_start_frag, insn_size); | |
729 | } | |
730 | } | |
731 | ||
732 | #else /* !HANDLE_BUNDLE */ | |
733 | ||
734 | # define assemble_one(line) md_assemble(line) | |
735 | ||
736 | #endif /* HANDLE_BUNDLE */ | |
737 | ||
041ff4dd NC |
738 | /* We read the file, putting things into a web that represents what we |
739 | have been reading. */ | |
740 | void | |
39e6acbd | 741 | read_a_source_file (char *name) |
252b5132 | 742 | { |
91d6fa6a NC |
743 | char c; |
744 | char *s; /* String of symbol, '\0' appended. */ | |
745 | int temp; | |
252b5132 RH |
746 | pseudo_typeS *pop; |
747 | ||
4c400d5e AM |
748 | #ifdef WARN_COMMENTS |
749 | found_comment = 0; | |
750 | #endif | |
751 | ||
252b5132 RH |
752 | buffer = input_scrub_new_file (name); |
753 | ||
754 | listing_file (name); | |
755 | listing_newline (NULL); | |
756 | register_dependency (name); | |
757 | ||
758 | /* Generate debugging information before we've read anything in to denote | |
759 | this file as the "main" source file and not a subordinate one | |
760 | (e.g. N_SO vs N_SOL in stabs). */ | |
761 | generate_file_debug (); | |
762 | ||
763 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 764 | { /* We have another line to parse. */ |
5e75c3ab JB |
765 | #ifndef NO_LISTING |
766 | /* In order to avoid listing macro expansion lines with labels | |
767 | multiple times, keep track of which line was last issued. */ | |
768 | static char *last_eol; | |
769 | ||
770 | last_eol = NULL; | |
771 | #endif | |
252b5132 RH |
772 | while (input_line_pointer < buffer_limit) |
773 | { | |
f19df8f7 | 774 | bfd_boolean was_new_line; |
041ff4dd | 775 | /* We have more of this buffer to parse. */ |
252b5132 | 776 | |
041ff4dd NC |
777 | /* We now have input_line_pointer->1st char of next line. |
778 | If input_line_pointer [-1] == '\n' then we just | |
779 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
780 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
781 | if (was_new_line) | |
252b5132 | 782 | { |
4a826962 | 783 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
784 | #ifdef md_start_line_hook |
785 | md_start_line_hook (); | |
786 | #endif | |
252b5132 RH |
787 | if (input_line_pointer[-1] == '\n') |
788 | bump_line_counters (); | |
f19df8f7 | 789 | } |
252b5132 | 790 | |
f19df8f7 AM |
791 | #ifndef NO_LISTING |
792 | /* If listing is on, and we are expanding a macro, then give | |
793 | the listing code the contents of the expanded line. */ | |
794 | if (listing) | |
795 | { | |
796 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
797 | { | |
798 | /* Find the end of the current expanded macro line. */ | |
799 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
800 | ||
801 | if (s != last_eol) | |
802 | { | |
803 | char *copy; | |
804 | int len; | |
805 | ||
806 | last_eol = s; | |
807 | /* Copy it for safe keeping. Also give an indication of | |
808 | how much macro nesting is involved at this point. */ | |
809 | len = s - input_line_pointer; | |
810 | copy = (char *) xmalloc (len + macro_nest + 2); | |
811 | memset (copy, '>', macro_nest); | |
812 | copy[macro_nest] = ' '; | |
813 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
814 | copy[macro_nest + 1 + len] = '\0'; | |
815 | ||
816 | /* Install the line with the listing facility. */ | |
817 | listing_newline (copy); | |
818 | } | |
819 | } | |
820 | else | |
821 | listing_newline (NULL); | |
822 | } | |
823 | #endif | |
824 | if (was_new_line) | |
825 | { | |
252b5132 RH |
826 | line_label = NULL; |
827 | ||
abd63a32 | 828 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
829 | { |
830 | /* Text at the start of a line must be a label, we | |
831 | run down and stick a colon in. */ | |
832 | if (is_name_beginner (*input_line_pointer)) | |
833 | { | |
834 | char *line_start = input_line_pointer; | |
252b5132 RH |
835 | int mri_line_macro; |
836 | ||
252b5132 RH |
837 | HANDLE_CONDITIONAL_ASSEMBLY (); |
838 | ||
839 | c = get_symbol_end (); | |
840 | ||
841 | /* In MRI mode, the EQU and MACRO pseudoops must | |
842 | be handled specially. */ | |
843 | mri_line_macro = 0; | |
844 | if (flag_m68k_mri) | |
845 | { | |
846 | char *rest = input_line_pointer + 1; | |
847 | ||
848 | if (*rest == ':') | |
849 | ++rest; | |
850 | if (*rest == ' ' || *rest == '\t') | |
851 | ++rest; | |
852 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
853 | || strncasecmp (rest, "SET", 3) == 0) | |
854 | && (rest[3] == ' ' || rest[3] == '\t')) | |
855 | { | |
856 | input_line_pointer = rest + 3; | |
857 | equals (line_start, | |
858 | strncasecmp (rest, "SET", 3) == 0); | |
859 | continue; | |
860 | } | |
861 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
862 | && (rest[5] == ' ' | |
863 | || rest[5] == '\t' | |
864 | || is_end_of_line[(unsigned char) rest[5]])) | |
865 | mri_line_macro = 1; | |
866 | } | |
867 | ||
868 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
869 | pseudo-op specially: we don't want to put the |
870 | symbol in the symbol table. */ | |
041ff4dd | 871 | if (!mri_line_macro |
a25c045a | 872 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
873 | && TC_START_LABEL_WITHOUT_COLON(c, |
874 | input_line_pointer) | |
a25c045a | 875 | #endif |
ef99799a | 876 | ) |
252b5132 RH |
877 | line_label = colon (line_start); |
878 | else | |
879 | line_label = symbol_create (line_start, | |
880 | absolute_section, | |
881 | (valueT) 0, | |
882 | &zero_address_frag); | |
883 | ||
884 | *input_line_pointer = c; | |
885 | if (c == ':') | |
886 | input_line_pointer++; | |
887 | } | |
888 | } | |
889 | } | |
890 | ||
47eebc20 | 891 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
892 | We expect a well-formed assembler statement. |
893 | A "symbol-name:" is a statement. | |
f0e652b4 | 894 | |
041ff4dd NC |
895 | Depending on what compiler is used, the order of these tests |
896 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
897 | Each test is independent of all other tests at the (top) |
898 | level. */ | |
899 | do | |
041ff4dd | 900 | c = *input_line_pointer++; |
d2bdaea8 | 901 | while (c == '\t' || c == ' ' || c == '\f'); |
252b5132 | 902 | |
041ff4dd NC |
903 | /* C is the 1st significant character. |
904 | Input_line_pointer points after that character. */ | |
252b5132 RH |
905 | if (is_name_beginner (c)) |
906 | { | |
041ff4dd | 907 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
908 | HANDLE_CONDITIONAL_ASSEMBLY (); |
909 | ||
910 | s = --input_line_pointer; | |
041ff4dd NC |
911 | c = get_symbol_end (); /* name's delimiter. */ |
912 | ||
913 | /* C is character after symbol. | |
d6415f6c AM |
914 | That character's place in the input line is now '\0'. |
915 | S points to the beginning of the symbol. | |
916 | [In case of pseudo-op, s->'.'.] | |
917 | Input_line_pointer->'\0' where c was. */ | |
5e8c8f8f | 918 | if (TC_START_LABEL (c, s, input_line_pointer)) |
252b5132 RH |
919 | { |
920 | if (flag_m68k_mri) | |
921 | { | |
922 | char *rest = input_line_pointer + 1; | |
923 | ||
924 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
925 | if (*rest == ':') |
926 | ++rest; | |
f0e652b4 | 927 | |
252b5132 RH |
928 | if (*rest == ' ' || *rest == '\t') |
929 | ++rest; | |
f0e652b4 | 930 | |
252b5132 RH |
931 | if ((strncasecmp (rest, "EQU", 3) == 0 |
932 | || strncasecmp (rest, "SET", 3) == 0) | |
933 | && (rest[3] == ' ' || rest[3] == '\t')) | |
934 | { | |
935 | input_line_pointer = rest + 3; | |
936 | equals (s, 1); | |
937 | continue; | |
938 | } | |
939 | } | |
940 | ||
041ff4dd NC |
941 | line_label = colon (s); /* User-defined label. */ |
942 | /* Put ':' back for error messages' sake. */ | |
943 | *input_line_pointer++ = ':'; | |
a645d1eb L |
944 | #ifdef tc_check_label |
945 | tc_check_label (line_label); | |
946 | #endif | |
041ff4dd | 947 | /* Input_line_pointer->after ':'. */ |
252b5132 | 948 | SKIP_WHITESPACE (); |
252b5132 | 949 | } |
fa94de6b | 950 | else if ((c == '=' && input_line_pointer[1] == '=') |
18d7868b HPN |
951 | || ((c == ' ' || c == '\t') |
952 | && input_line_pointer[1] == '=' | |
953 | && input_line_pointer[2] == '=')) | |
9497f5ac NC |
954 | { |
955 | equals (s, -1); | |
956 | demand_empty_rest_of_line (); | |
957 | } | |
fa94de6b RM |
958 | else if ((c == '=' |
959 | || ((c == ' ' || c == '\t') | |
960 | && input_line_pointer[1] == '=')) | |
ee3c9814 | 961 | #ifdef TC_EQUAL_IN_INSN |
fa94de6b | 962 | && !TC_EQUAL_IN_INSN (c, s) |
ee3c9814 | 963 | #endif |
fa94de6b | 964 | ) |
252b5132 RH |
965 | { |
966 | equals (s, 1); | |
967 | demand_empty_rest_of_line (); | |
968 | } | |
969 | else | |
041ff4dd NC |
970 | { |
971 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
972 | pop = NULL; |
973 | ||
a8a3b3b2 | 974 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
975 | { |
976 | char *s2 = s; | |
37d8bb27 NC |
977 | |
978 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
979 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 980 | |
252b5132 RH |
981 | while (*s2) |
982 | { | |
3882b010 | 983 | *s2 = TOLOWER (*s2); |
252b5132 RH |
984 | s2++; |
985 | } | |
986 | } | |
987 | #endif | |
abd63a32 | 988 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 989 | { |
7be1c489 AM |
990 | /* The MRI assembler uses pseudo-ops without |
991 | a period. */ | |
252b5132 RH |
992 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
993 | if (pop != NULL && pop->poc_handler == NULL) | |
994 | pop = NULL; | |
995 | } | |
996 | ||
997 | if (pop != NULL | |
041ff4dd | 998 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 999 | { |
041ff4dd | 1000 | /* PSEUDO - OP. |
f0e652b4 | 1001 | |
d6415f6c AM |
1002 | WARNING: c has next char, which may be end-of-line. |
1003 | We lookup the pseudo-op table with s+1 because we | |
1004 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
1005 | |
1006 | if (pop == NULL) | |
1007 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
1008 | if (pop && !pop->poc_handler) |
1009 | pop = NULL; | |
252b5132 RH |
1010 | |
1011 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
1012 | automatic alignment directive. What a hack |
1013 | this is. */ | |
252b5132 RH |
1014 | if (mri_pending_align |
1015 | && (pop == NULL | |
041ff4dd NC |
1016 | || !((pop->poc_handler == cons |
1017 | && pop->poc_val == 1) | |
1018 | || (pop->poc_handler == s_space | |
1019 | && pop->poc_val == 1) | |
252b5132 | 1020 | #ifdef tc_conditional_pseudoop |
041ff4dd | 1021 | || tc_conditional_pseudoop (pop) |
252b5132 | 1022 | #endif |
041ff4dd NC |
1023 | || pop->poc_handler == s_if |
1024 | || pop->poc_handler == s_ifdef | |
1025 | || pop->poc_handler == s_ifc | |
1026 | || pop->poc_handler == s_ifeqs | |
1027 | || pop->poc_handler == s_else | |
1028 | || pop->poc_handler == s_endif | |
1029 | || pop->poc_handler == s_globl | |
1030 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
1031 | { |
1032 | do_align (1, (char *) NULL, 0, 0); | |
1033 | mri_pending_align = 0; | |
f0e652b4 | 1034 | |
252b5132 RH |
1035 | if (line_label != NULL) |
1036 | { | |
2b47531b | 1037 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1038 | S_SET_VALUE (line_label, frag_now_fix ()); |
1039 | } | |
1040 | } | |
1041 | ||
041ff4dd | 1042 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
1043 | if (pop == NULL) |
1044 | { | |
5e75c3ab JB |
1045 | char *end = input_line_pointer; |
1046 | ||
252b5132 RH |
1047 | *input_line_pointer = c; |
1048 | s_ignore (0); | |
5e75c3ab JB |
1049 | c = *--input_line_pointer; |
1050 | *input_line_pointer = '\0'; | |
1051 | if (! macro_defined || ! try_macro (c, s)) | |
1052 | { | |
1053 | *end = '\0'; | |
1054 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
1055 | *input_line_pointer++ = c; | |
1056 | } | |
252b5132 RH |
1057 | continue; |
1058 | } | |
1059 | ||
041ff4dd | 1060 | /* Put it back for error messages etc. */ |
252b5132 RH |
1061 | *input_line_pointer = c; |
1062 | /* The following skip of whitespace is compulsory. | |
1063 | A well shaped space is sometimes all that separates | |
041ff4dd | 1064 | keyword from operands. */ |
252b5132 RH |
1065 | if (c == ' ' || c == '\t') |
1066 | input_line_pointer++; | |
041ff4dd NC |
1067 | |
1068 | /* Input_line is restored. | |
d6415f6c AM |
1069 | Input_line_pointer->1st non-blank char |
1070 | after pseudo-operation. */ | |
252b5132 RH |
1071 | (*pop->poc_handler) (pop->poc_val); |
1072 | ||
1073 | /* If that was .end, just get out now. */ | |
1074 | if (pop->poc_handler == s_end) | |
1075 | goto quit; | |
1076 | } | |
1077 | else | |
1078 | { | |
041ff4dd NC |
1079 | /* WARNING: c has char, which may be end-of-line. */ |
1080 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 | 1081 | *input_line_pointer = c; |
7592cfd7 | 1082 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
252b5132 RH |
1083 | c = *input_line_pointer; |
1084 | *input_line_pointer = '\0'; | |
1085 | ||
1086 | generate_lineno_debug (); | |
1087 | ||
5e75c3ab JB |
1088 | if (macro_defined && try_macro (c, s)) |
1089 | continue; | |
252b5132 RH |
1090 | |
1091 | if (mri_pending_align) | |
1092 | { | |
1093 | do_align (1, (char *) NULL, 0, 0); | |
1094 | mri_pending_align = 0; | |
1095 | if (line_label != NULL) | |
1096 | { | |
2b47531b | 1097 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1098 | S_SET_VALUE (line_label, frag_now_fix ()); |
1099 | } | |
1100 | } | |
1101 | ||
fa94de6b | 1102 | assemble_one (s); /* Assemble 1 instruction. */ |
252b5132 RH |
1103 | |
1104 | *input_line_pointer++ = c; | |
1105 | ||
1106 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
1107 | this instruction. */ |
1108 | } | |
1109 | } | |
252b5132 | 1110 | continue; |
041ff4dd | 1111 | } |
252b5132 RH |
1112 | |
1113 | /* Empty statement? */ | |
1114 | if (is_end_of_line[(unsigned char) c]) | |
1115 | continue; | |
1116 | ||
3882b010 | 1117 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 1118 | { |
041ff4dd | 1119 | /* local label ("4:") */ |
252b5132 RH |
1120 | char *backup = input_line_pointer; |
1121 | ||
1122 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1123 | ||
1124 | temp = c - '0'; | |
1125 | ||
041ff4dd | 1126 | /* Read the whole number. */ |
3882b010 | 1127 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
1128 | { |
1129 | temp = (temp * 10) + *input_line_pointer - '0'; | |
1130 | ++input_line_pointer; | |
041ff4dd | 1131 | } |
252b5132 RH |
1132 | |
1133 | if (LOCAL_LABELS_DOLLAR | |
1134 | && *input_line_pointer == '$' | |
1135 | && *(input_line_pointer + 1) == ':') | |
1136 | { | |
1137 | input_line_pointer += 2; | |
1138 | ||
1139 | if (dollar_label_defined (temp)) | |
1140 | { | |
1141 | as_fatal (_("label \"%d$\" redefined"), temp); | |
1142 | } | |
1143 | ||
1144 | define_dollar_label (temp); | |
1145 | colon (dollar_label_name (temp, 0)); | |
1146 | continue; | |
1147 | } | |
1148 | ||
1149 | if (LOCAL_LABELS_FB | |
1150 | && *input_line_pointer++ == ':') | |
1151 | { | |
1152 | fb_label_instance_inc (temp); | |
1153 | colon (fb_label_name (temp, 0)); | |
1154 | continue; | |
1155 | } | |
1156 | ||
1157 | input_line_pointer = backup; | |
1158 | } /* local label ("4:") */ | |
1159 | ||
1160 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 1161 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1162 | sb sbuf; |
252b5132 RH |
1163 | char *ends; |
1164 | char *new_buf; | |
1165 | char *new_tmp; | |
1166 | unsigned int new_length; | |
1167 | char *tmp_buf = 0; | |
1168 | ||
252b5132 RH |
1169 | s = input_line_pointer; |
1170 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1171 | { |
1172 | /* We ignore it. */ | |
1173 | ignore_rest_of_line (); | |
1174 | continue; | |
1175 | } | |
1176 | bump_line_counters (); | |
252b5132 RH |
1177 | s += 4; |
1178 | ||
1179 | ends = strstr (s, "#NO_APP\n"); | |
1180 | ||
1181 | if (!ends) | |
1182 | { | |
1183 | unsigned int tmp_len; | |
1184 | unsigned int num; | |
1185 | ||
1186 | /* The end of the #APP wasn't in this buffer. We | |
1187 | keep reading in buffers until we find the #NO_APP | |
1188 | that goes with this #APP There is one. The specs | |
47eebc20 | 1189 | guarantee it... */ |
252b5132 | 1190 | tmp_len = buffer_limit - s; |
1e9cc1c2 | 1191 | tmp_buf = (char *) xmalloc (tmp_len + 1); |
252b5132 RH |
1192 | memcpy (tmp_buf, s, tmp_len); |
1193 | do | |
1194 | { | |
1195 | new_tmp = input_scrub_next_buffer (&buffer); | |
1196 | if (!new_tmp) | |
1197 | break; | |
1198 | else | |
1199 | buffer_limit = new_tmp; | |
1200 | input_line_pointer = buffer; | |
1201 | ends = strstr (buffer, "#NO_APP\n"); | |
1202 | if (ends) | |
1203 | num = ends - buffer; | |
1204 | else | |
1205 | num = buffer_limit - buffer; | |
1206 | ||
1e9cc1c2 | 1207 | tmp_buf = (char *) xrealloc (tmp_buf, tmp_len + num); |
252b5132 RH |
1208 | memcpy (tmp_buf + tmp_len, buffer, num); |
1209 | tmp_len += num; | |
1210 | } | |
1211 | while (!ends); | |
1212 | ||
1213 | input_line_pointer = ends ? ends + 8 : NULL; | |
1214 | ||
1215 | s = tmp_buf; | |
1216 | ends = s + tmp_len; | |
1217 | ||
1218 | } | |
1219 | else | |
1220 | { | |
1221 | input_line_pointer = ends + 8; | |
1222 | } | |
1223 | ||
1224 | scrub_string = s; | |
1225 | scrub_string_end = ends; | |
1226 | ||
1227 | new_length = ends - s; | |
1228 | new_buf = (char *) xmalloc (new_length); | |
1229 | new_tmp = new_buf; | |
1230 | for (;;) | |
1231 | { | |
39a45edc AM |
1232 | size_t space; |
1233 | size_t size; | |
252b5132 RH |
1234 | |
1235 | space = (new_buf + new_length) - new_tmp; | |
1236 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1237 | ||
1238 | if (size < space) | |
1239 | { | |
64e55042 | 1240 | new_tmp[size] = 0; |
252b5132 RH |
1241 | break; |
1242 | } | |
1243 | ||
1e9cc1c2 | 1244 | new_buf = (char *) xrealloc (new_buf, new_length + 100); |
252b5132 RH |
1245 | new_tmp = new_buf + new_length; |
1246 | new_length += 100; | |
1247 | } | |
1248 | ||
1249 | if (tmp_buf) | |
1250 | free (tmp_buf); | |
f0e652b4 | 1251 | |
64e55042 HPN |
1252 | /* We've "scrubbed" input to the preferred format. In the |
1253 | process we may have consumed the whole of the remaining | |
1254 | file (and included files). We handle this formatted | |
1255 | input similar to that of macro expansion, letting | |
1256 | actual macro expansion (possibly nested) and other | |
1257 | input expansion work. Beware that in messages, line | |
1258 | numbers and possibly file names will be incorrect. */ | |
d2ae702c L |
1259 | new_length = strlen (new_buf); |
1260 | sb_build (&sbuf, new_length); | |
1261 | sb_add_buffer (&sbuf, new_buf, new_length); | |
64e55042 HPN |
1262 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); |
1263 | sb_kill (&sbuf); | |
1264 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1265 | free (new_buf); | |
252b5132 RH |
1266 | continue; |
1267 | } | |
1268 | ||
1269 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1270 | ||
1271 | #ifdef tc_unrecognized_line | |
1272 | if (tc_unrecognized_line (c)) | |
1273 | continue; | |
1274 | #endif | |
0e389e77 | 1275 | input_line_pointer--; |
601e61cd | 1276 | /* Report unknown char as error. */ |
c95b35a9 | 1277 | demand_empty_rest_of_line (); |
041ff4dd | 1278 | } |
041ff4dd | 1279 | } |
252b5132 RH |
1280 | |
1281 | quit: | |
04648e65 | 1282 | symbol_set_value_now (&dot_symbol); |
252b5132 | 1283 | |
fa94de6b RM |
1284 | #ifdef HANDLE_BUNDLE |
1285 | if (bundle_lock_frag != NULL) | |
1286 | { | |
1287 | as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line, | |
1288 | _(".bundle_lock with no matching .bundle_unlock")); | |
1289 | bundle_lock_frag = NULL; | |
1290 | bundle_lock_frchain = NULL; | |
d416e51d | 1291 | bundle_lock_depth = 0; |
fa94de6b RM |
1292 | } |
1293 | #endif | |
1294 | ||
252b5132 | 1295 | #ifdef md_cleanup |
041ff4dd | 1296 | md_cleanup (); |
252b5132 | 1297 | #endif |
041ff4dd NC |
1298 | /* Close the input file. */ |
1299 | input_scrub_close (); | |
4c400d5e AM |
1300 | #ifdef WARN_COMMENTS |
1301 | { | |
1302 | if (warn_comment && found_comment) | |
1303 | as_warn_where (found_comment_file, found_comment, | |
1304 | "first comment found here"); | |
1305 | } | |
1306 | #endif | |
252b5132 RH |
1307 | } |
1308 | ||
e5604d79 | 1309 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
956a6ba3 | 1310 | Take the sign of the number from SIGN rather than X_add_number. */ |
e5604d79 RS |
1311 | |
1312 | static void | |
956a6ba3 | 1313 | convert_to_bignum (expressionS *exp, int sign) |
e5604d79 RS |
1314 | { |
1315 | valueT value; | |
1316 | unsigned int i; | |
1317 | ||
1318 | value = exp->X_add_number; | |
1319 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1320 | { | |
1321 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1322 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1323 | } | |
1324 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1325 | the sign of the original value. */ | |
956a6ba3 JB |
1326 | if ((exp->X_add_number < 0) == !sign) |
1327 | generic_bignum[i++] = sign ? LITTLENUM_MASK : 0; | |
e5604d79 RS |
1328 | exp->X_op = O_big; |
1329 | exp->X_add_number = i; | |
1330 | } | |
1331 | ||
252b5132 RH |
1332 | /* For most MRI pseudo-ops, the line actually ends at the first |
1333 | nonquoted space. This function looks for that point, stuffs a null | |
1334 | in, and sets *STOPCP to the character that used to be there, and | |
1335 | returns the location. | |
1336 | ||
1337 | Until I hear otherwise, I am going to assume that this is only true | |
1338 | for the m68k MRI assembler. */ | |
1339 | ||
1340 | char * | |
39e6acbd | 1341 | mri_comment_field (char *stopcp) |
252b5132 | 1342 | { |
252b5132 | 1343 | char *s; |
041ff4dd | 1344 | #ifdef TC_M68K |
252b5132 RH |
1345 | int inquote = 0; |
1346 | ||
1347 | know (flag_m68k_mri); | |
1348 | ||
1349 | for (s = input_line_pointer; | |
041ff4dd | 1350 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1351 | || inquote); |
1352 | s++) | |
1353 | { | |
1354 | if (*s == '\'') | |
041ff4dd | 1355 | inquote = !inquote; |
252b5132 | 1356 | } |
252b5132 | 1357 | #else |
041ff4dd NC |
1358 | for (s = input_line_pointer; |
1359 | !is_end_of_line[(unsigned char) *s]; | |
1360 | s++) | |
252b5132 | 1361 | ; |
041ff4dd | 1362 | #endif |
252b5132 RH |
1363 | *stopcp = *s; |
1364 | *s = '\0'; | |
f0e652b4 | 1365 | |
252b5132 | 1366 | return s; |
252b5132 RH |
1367 | } |
1368 | ||
1369 | /* Skip to the end of an MRI comment field. */ | |
1370 | ||
1371 | void | |
39e6acbd | 1372 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1373 | { |
1374 | know (flag_mri); | |
1375 | ||
1376 | input_line_pointer = stop; | |
1377 | *stop = stopc; | |
041ff4dd | 1378 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1379 | ++input_line_pointer; |
1380 | } | |
1381 | ||
041ff4dd | 1382 | void |
39e6acbd | 1383 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1384 | { |
1385 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1386 | } | |
1387 | ||
1388 | /* Guts of .align directive. N is the power of two to which to align. | |
1389 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1390 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1391 | the maximum number of characters to skip when doing the alignment, | |
1392 | or 0 if there is no maximum. */ | |
1393 | ||
041ff4dd | 1394 | static void |
39e6acbd | 1395 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1396 | { |
ebeb9253 AM |
1397 | if (now_seg == absolute_section) |
1398 | { | |
1399 | if (fill != NULL) | |
1400 | while (len-- > 0) | |
1401 | if (*fill++ != '\0') | |
1402 | { | |
1403 | as_warn (_("ignoring fill value in absolute section")); | |
1404 | break; | |
1405 | } | |
1406 | fill = NULL; | |
1407 | len = 0; | |
1408 | } | |
1409 | ||
b8861cfb NS |
1410 | #ifdef md_flush_pending_output |
1411 | md_flush_pending_output (); | |
1412 | #endif | |
252b5132 RH |
1413 | #ifdef md_do_align |
1414 | md_do_align (n, fill, len, max, just_record_alignment); | |
1415 | #endif | |
1416 | ||
041ff4dd | 1417 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1418 | if (n != 0 && !need_pass_2) |
1419 | { | |
0a9ef439 RH |
1420 | if (fill == NULL) |
1421 | { | |
1422 | if (subseg_text_p (now_seg)) | |
1423 | frag_align_code (n, max); | |
1424 | else | |
1425 | frag_align (n, 0, max); | |
1426 | } | |
1427 | else if (len <= 1) | |
252b5132 RH |
1428 | frag_align (n, *fill, max); |
1429 | else | |
1430 | frag_align_pattern (n, fill, len, max); | |
1431 | } | |
1432 | ||
1433 | #ifdef md_do_align | |
a6bd2a4f | 1434 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1435 | #endif |
1436 | ||
bea9907b | 1437 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1438 | } |
1439 | ||
1440 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1441 | (in bytes). A negative ARG is the negative of the length of the | |
1442 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1443 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1444 | #ifndef TC_ALIGN_LIMIT |
1445 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1446 | #endif | |
9ebd302d | 1447 | |
252b5132 | 1448 | static void |
39e6acbd | 1449 | s_align (int arg, int bytes_p) |
252b5132 | 1450 | { |
11ec4ba9 | 1451 | unsigned int align_limit = TC_ALIGN_LIMIT; |
9ebd302d | 1452 | unsigned int align; |
252b5132 | 1453 | char *stop = NULL; |
fb25138b | 1454 | char stopc = 0; |
252b5132 RH |
1455 | offsetT fill = 0; |
1456 | int max; | |
1457 | int fill_p; | |
1458 | ||
1459 | if (flag_mri) | |
1460 | stop = mri_comment_field (&stopc); | |
1461 | ||
1462 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1463 | { | |
1464 | if (arg < 0) | |
1465 | align = 0; | |
1466 | else | |
041ff4dd | 1467 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1468 | } |
1469 | else | |
1470 | { | |
1471 | align = get_absolute_expression (); | |
1472 | SKIP_WHITESPACE (); | |
1473 | } | |
1474 | ||
1475 | if (bytes_p) | |
1476 | { | |
1477 | /* Convert to a power of 2. */ | |
1478 | if (align != 0) | |
1479 | { | |
1480 | unsigned int i; | |
1481 | ||
1482 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1483 | ; | |
1484 | if (align != 1) | |
0e389e77 | 1485 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1486 | |
252b5132 RH |
1487 | align = i; |
1488 | } | |
1489 | } | |
1490 | ||
b617dc20 | 1491 | if (align > align_limit) |
252b5132 | 1492 | { |
b617dc20 | 1493 | align = align_limit; |
0e389e77 | 1494 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1495 | } |
1496 | ||
1497 | if (*input_line_pointer != ',') | |
1498 | { | |
1499 | fill_p = 0; | |
1500 | max = 0; | |
1501 | } | |
1502 | else | |
1503 | { | |
1504 | ++input_line_pointer; | |
1505 | if (*input_line_pointer == ',') | |
1506 | fill_p = 0; | |
1507 | else | |
1508 | { | |
1509 | fill = get_absolute_expression (); | |
1510 | SKIP_WHITESPACE (); | |
1511 | fill_p = 1; | |
1512 | } | |
1513 | ||
1514 | if (*input_line_pointer != ',') | |
1515 | max = 0; | |
1516 | else | |
1517 | { | |
1518 | ++input_line_pointer; | |
1519 | max = get_absolute_expression (); | |
1520 | } | |
1521 | } | |
1522 | ||
041ff4dd | 1523 | if (!fill_p) |
252b5132 RH |
1524 | { |
1525 | if (arg < 0) | |
1526 | as_warn (_("expected fill pattern missing")); | |
1527 | do_align (align, (char *) NULL, 0, max); | |
1528 | } | |
1529 | else | |
1530 | { | |
1531 | int fill_len; | |
1532 | ||
1533 | if (arg >= 0) | |
1534 | fill_len = 1; | |
1535 | else | |
041ff4dd | 1536 | fill_len = -arg; |
252b5132 RH |
1537 | if (fill_len <= 1) |
1538 | { | |
1539 | char fill_char; | |
1540 | ||
1541 | fill_char = fill; | |
1542 | do_align (align, &fill_char, fill_len, max); | |
1543 | } | |
1544 | else | |
1545 | { | |
1546 | char ab[16]; | |
1547 | ||
1548 | if ((size_t) fill_len > sizeof ab) | |
1549 | abort (); | |
1550 | md_number_to_chars (ab, fill, fill_len); | |
1551 | do_align (align, ab, fill_len, max); | |
1552 | } | |
1553 | } | |
1554 | ||
1555 | demand_empty_rest_of_line (); | |
1556 | ||
1557 | if (flag_mri) | |
1558 | mri_comment_end (stop, stopc); | |
1559 | } | |
1560 | ||
1561 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1562 | align to a 4 byte boundary. */ | |
1563 | ||
041ff4dd | 1564 | void |
39e6acbd | 1565 | s_align_bytes (int arg) |
252b5132 RH |
1566 | { |
1567 | s_align (arg, 1); | |
1568 | } | |
1569 | ||
1570 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1571 | to a 2**4 boundary. */ | |
1572 | ||
041ff4dd | 1573 | void |
39e6acbd | 1574 | s_align_ptwo (int arg) |
252b5132 RH |
1575 | { |
1576 | s_align (arg, 0); | |
1577 | } | |
1578 | ||
caa32fe5 NC |
1579 | /* Switch in and out of alternate macro mode. */ |
1580 | ||
1581 | void | |
1582 | s_altmacro (int on) | |
1583 | { | |
1584 | demand_empty_rest_of_line (); | |
1585 | macro_set_alternate (on); | |
1586 | } | |
1587 | ||
7bfd842d NC |
1588 | /* Read a symbol name from input_line_pointer. |
1589 | ||
1590 | Stores the symbol name in a buffer and returns a pointer to this buffer. | |
1591 | The buffer is xalloc'ed. It is the caller's responsibility to free | |
1592 | this buffer. | |
1593 | ||
1594 | The name is not left in the i_l_p buffer as it may need processing | |
1595 | to handle escape characters. | |
1596 | ||
1597 | Advances i_l_p to the next non-whitespace character. | |
1598 | ||
1599 | If a symbol name could not be read, the routine issues an error | |
1600 | messages, skips to the end of the line and returns NULL. */ | |
1601 | ||
1602 | static char * | |
1603 | read_symbol_name (void) | |
1604 | { | |
1605 | char * name; | |
1606 | char * start; | |
1607 | char c; | |
1608 | ||
1609 | c = *input_line_pointer++; | |
1610 | ||
1611 | if (c == '"') | |
1612 | { | |
1613 | #define SYM_NAME_CHUNK_LEN 128 | |
1614 | ptrdiff_t len = SYM_NAME_CHUNK_LEN; | |
1615 | char * name_end; | |
1616 | unsigned int C; | |
1617 | ||
1618 | start = name = xmalloc (len + 1); | |
1619 | ||
1620 | name_end = name + SYM_NAME_CHUNK_LEN; | |
1621 | ||
1622 | while (is_a_char (C = next_char_of_string ())) | |
1623 | { | |
1624 | if (name >= name_end) | |
1625 | { | |
1626 | ptrdiff_t sofar; | |
1627 | ||
1628 | sofar = name - start; | |
1629 | len += SYM_NAME_CHUNK_LEN; | |
1630 | start = xrealloc (start, len + 1); | |
1631 | name_end = start + len; | |
1632 | name = start + sofar; | |
1633 | } | |
34bca508 | 1634 | |
7bfd842d NC |
1635 | *name++ = (char) C; |
1636 | } | |
1637 | *name = 0; | |
1638 | ||
1639 | /* Since quoted symbol names can contain non-ASCII characters, | |
1640 | check the string and warn if it cannot be recognised by the | |
1641 | current character set. */ | |
1642 | if (mbstowcs (NULL, name, len) == (size_t) -1) | |
1643 | as_warn (_("symbol name not recognised in the current locale")); | |
1644 | } | |
1645 | else if (is_name_beginner (c) || c == '\001') | |
1646 | { | |
1647 | ptrdiff_t len; | |
1648 | ||
1649 | name = input_line_pointer - 1; | |
1650 | ||
1651 | /* We accept \001 in a name in case this is | |
1652 | being called with a constructed string. */ | |
1653 | while (is_part_of_name (c = *input_line_pointer++) | |
1654 | || c == '\001') | |
1655 | ; | |
1656 | ||
1657 | len = (input_line_pointer - name) - 1; | |
1658 | start = xmalloc (len + 1); | |
1659 | ||
1660 | memcpy (start, name, len); | |
1661 | start[len] = 0; | |
1662 | ||
1663 | /* Skip a name ender char if one is present. */ | |
1664 | if (! is_name_ender (c)) | |
1665 | --input_line_pointer; | |
1666 | } | |
1667 | else | |
1668 | name = start = NULL; | |
1669 | ||
1670 | if (name == start) | |
1671 | { | |
1672 | as_bad (_("expected symbol name")); | |
1673 | ignore_rest_of_line (); | |
1674 | return NULL; | |
1675 | } | |
34bca508 | 1676 | |
7bfd842d NC |
1677 | SKIP_WHITESPACE (); |
1678 | ||
1679 | return start; | |
1680 | } | |
1681 | ||
1682 | ||
e13bab5a AM |
1683 | symbolS * |
1684 | s_comm_internal (int param, | |
1685 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1686 | { |
e13bab5a | 1687 | char *name; |
e13bab5a AM |
1688 | offsetT temp, size; |
1689 | symbolS *symbolP = NULL; | |
252b5132 | 1690 | char *stop = NULL; |
fb25138b | 1691 | char stopc = 0; |
e13bab5a | 1692 | expressionS exp; |
252b5132 RH |
1693 | |
1694 | if (flag_mri) | |
1695 | stop = mri_comment_field (&stopc); | |
1696 | ||
7bfd842d NC |
1697 | if ((name = read_symbol_name ()) == NULL) |
1698 | goto out; | |
f0e652b4 | 1699 | |
e13bab5a AM |
1700 | /* Accept an optional comma after the name. The comma used to be |
1701 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1702 | if (*input_line_pointer == ',') | |
1703 | input_line_pointer++; | |
1704 | ||
e13bab5a AM |
1705 | temp = get_absolute_expr (&exp); |
1706 | size = temp; | |
e13bab5a | 1707 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1708 | if (exp.X_op == O_absent) |
252b5132 | 1709 | { |
e13bab5a | 1710 | as_bad (_("missing size expression")); |
252b5132 | 1711 | ignore_rest_of_line (); |
e13bab5a | 1712 | goto out; |
252b5132 | 1713 | } |
e13bab5a | 1714 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1715 | { |
e13bab5a | 1716 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1717 | ignore_rest_of_line (); |
e13bab5a | 1718 | goto out; |
252b5132 | 1719 | } |
f0e652b4 | 1720 | |
252b5132 | 1721 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1722 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1723 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1724 | { |
92757bc9 JB |
1725 | if (!S_IS_VOLATILE (symbolP)) |
1726 | { | |
1727 | symbolP = NULL; | |
1728 | as_bad (_("symbol `%s' is already defined"), name); | |
92757bc9 JB |
1729 | ignore_rest_of_line (); |
1730 | goto out; | |
1731 | } | |
89cdfe57 | 1732 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1733 | S_SET_SEGMENT (symbolP, undefined_section); |
1734 | S_SET_VALUE (symbolP, 0); | |
1735 | symbol_set_frag (symbolP, &zero_address_frag); | |
1736 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1737 | } |
f0e652b4 | 1738 | |
e13bab5a AM |
1739 | size = S_GET_VALUE (symbolP); |
1740 | if (size == 0) | |
1741 | size = temp; | |
1742 | else if (size != temp) | |
1743 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1744 | name, (long) size, (long) temp); | |
1745 | ||
e13bab5a AM |
1746 | if (comm_parse_extra != NULL) |
1747 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1748 | else |
1749 | { | |
e13bab5a | 1750 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1751 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1752 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
e13bab5a | 1753 | } |
252b5132 RH |
1754 | |
1755 | demand_empty_rest_of_line (); | |
e13bab5a | 1756 | out: |
252b5132 RH |
1757 | if (flag_mri) |
1758 | mri_comment_end (stop, stopc); | |
7bfd842d NC |
1759 | if (name != NULL) |
1760 | free (name); | |
e13bab5a AM |
1761 | return symbolP; |
1762 | } | |
1763 | ||
1764 | void | |
1765 | s_comm (int ignore) | |
1766 | { | |
1767 | s_comm_internal (ignore, NULL); | |
1768 | } | |
252b5132 RH |
1769 | |
1770 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1771 | symbol with the appropriate name. We make s_space do the right | |
1772 | thing by increasing the size. */ | |
1773 | ||
1774 | void | |
39e6acbd | 1775 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1776 | { |
1777 | char *name; | |
1778 | char c; | |
1779 | char *alc = NULL; | |
1780 | symbolS *sym; | |
1781 | offsetT align; | |
1782 | char *stop = NULL; | |
fb25138b | 1783 | char stopc = 0; |
252b5132 | 1784 | |
041ff4dd | 1785 | if (!flag_mri) |
252b5132 RH |
1786 | { |
1787 | s_comm (0); | |
1788 | return; | |
1789 | } | |
1790 | ||
1791 | stop = mri_comment_field (&stopc); | |
1792 | ||
1793 | SKIP_WHITESPACE (); | |
1794 | ||
1795 | name = input_line_pointer; | |
3882b010 | 1796 | if (!ISDIGIT (*name)) |
252b5132 RH |
1797 | c = get_symbol_end (); |
1798 | else | |
1799 | { | |
1800 | do | |
1801 | { | |
1802 | ++input_line_pointer; | |
1803 | } | |
3882b010 | 1804 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1805 | |
252b5132 RH |
1806 | c = *input_line_pointer; |
1807 | *input_line_pointer = '\0'; | |
1808 | ||
1809 | if (line_label != NULL) | |
1810 | { | |
1811 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1812 | + (input_line_pointer - name) | |
1813 | + 1); | |
1814 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1815 | name = alc; | |
1816 | } | |
1817 | } | |
1818 | ||
1819 | sym = symbol_find_or_make (name); | |
1820 | *input_line_pointer = c; | |
1821 | if (alc != NULL) | |
1822 | free (alc); | |
1823 | ||
1824 | if (*input_line_pointer != ',') | |
1825 | align = 0; | |
1826 | else | |
1827 | { | |
1828 | ++input_line_pointer; | |
1829 | align = get_absolute_expression (); | |
1830 | } | |
1831 | ||
041ff4dd | 1832 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1833 | { |
0e389e77 | 1834 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1835 | ignore_rest_of_line (); |
1836 | mri_comment_end (stop, stopc); | |
1837 | return; | |
1838 | } | |
1839 | ||
1840 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1841 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1842 | mri_common_symbol = sym; |
1843 | ||
1844 | #ifdef S_SET_ALIGN | |
1845 | if (align != 0) | |
1846 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1847 | #else |
1848 | (void) align; | |
252b5132 RH |
1849 | #endif |
1850 | ||
1851 | if (line_label != NULL) | |
1852 | { | |
2b47531b ILT |
1853 | expressionS exp; |
1854 | exp.X_op = O_symbol; | |
1855 | exp.X_add_symbol = sym; | |
1856 | exp.X_add_number = 0; | |
1857 | symbol_set_value_expression (line_label, &exp); | |
1858 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1859 | S_SET_SEGMENT (line_label, expr_section); |
1860 | } | |
1861 | ||
1862 | /* FIXME: We just ignore the small argument, which distinguishes | |
1863 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1864 | ||
1865 | /* Ignore the type and hptype. */ | |
1866 | if (*input_line_pointer == ',') | |
1867 | input_line_pointer += 2; | |
1868 | if (*input_line_pointer == ',') | |
1869 | input_line_pointer += 2; | |
1870 | ||
1871 | demand_empty_rest_of_line (); | |
1872 | ||
1873 | mri_comment_end (stop, stopc); | |
1874 | } | |
1875 | ||
1876 | void | |
39e6acbd | 1877 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1878 | { |
1879 | segT section; | |
3d540e93 | 1880 | int temp; |
252b5132 RH |
1881 | |
1882 | temp = get_absolute_expression (); | |
1883 | if (flag_readonly_data_in_text) | |
1884 | { | |
1885 | section = text_section; | |
1886 | temp += 1000; | |
1887 | } | |
1888 | else | |
1889 | section = data_section; | |
1890 | ||
1891 | subseg_set (section, (subsegT) temp); | |
1892 | ||
252b5132 RH |
1893 | demand_empty_rest_of_line (); |
1894 | } | |
1895 | ||
1896 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1897 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1898 | file name. This default definition may be overridden by the object | |
1899 | or CPU specific pseudo-ops. This function is also the default | |
1900 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1901 | .file. */ | |
1902 | ||
ecb4347a | 1903 | void |
f17c130b | 1904 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1905 | { |
1906 | #ifdef LISTING | |
1907 | if (listing) | |
1908 | listing_source_file (file); | |
1909 | #endif | |
1910 | register_dependency (file); | |
1911 | #ifdef obj_app_file | |
c04f5787 | 1912 | obj_app_file (file, appfile); |
ecb4347a DJ |
1913 | #endif |
1914 | } | |
1915 | ||
041ff4dd | 1916 | void |
39e6acbd | 1917 | s_app_file (int appfile) |
252b5132 | 1918 | { |
3d540e93 | 1919 | char *s; |
252b5132 RH |
1920 | int length; |
1921 | ||
041ff4dd | 1922 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1923 | if ((s = demand_copy_string (&length)) != 0) |
1924 | { | |
252b5132 | 1925 | int may_omit |
93e914b2 | 1926 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
1927 | |
1928 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1929 | backquote. */ |
252b5132 RH |
1930 | if (flag_m68k_mri |
1931 | && *input_line_pointer == '\'' | |
1932 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1933 | ++input_line_pointer; | |
1934 | ||
1935 | demand_empty_rest_of_line (); | |
041ff4dd | 1936 | if (!may_omit) |
c04f5787 | 1937 | s_app_file_string (s, appfile); |
252b5132 RH |
1938 | } |
1939 | } | |
1940 | ||
e9fc6c21 AO |
1941 | static int |
1942 | get_linefile_number (int *flag) | |
1943 | { | |
1944 | SKIP_WHITESPACE (); | |
1945 | ||
1946 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
1947 | return 0; | |
1948 | ||
1949 | *flag = get_absolute_expression (); | |
1950 | ||
1951 | return 1; | |
1952 | } | |
1953 | ||
252b5132 RH |
1954 | /* Handle the .appline pseudo-op. This is automatically generated by |
1955 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1956 | default definition may be overridden by the object or CPU specific | |
1957 | pseudo-ops. */ | |
1958 | ||
1959 | void | |
93e914b2 | 1960 | s_app_line (int appline) |
252b5132 | 1961 | { |
e9fc6c21 | 1962 | char *file = NULL; |
252b5132 RH |
1963 | int l; |
1964 | ||
1965 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
1966 | if (appline) |
1967 | l = get_absolute_expression (); | |
1968 | else if (!get_linefile_number (&l)) | |
1969 | { | |
1970 | ignore_rest_of_line (); | |
1971 | return; | |
1972 | } | |
1973 | ||
1974 | l--; | |
47837f8e NC |
1975 | |
1976 | if (l < -1) | |
252b5132 | 1977 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
1978 | Besides, it's silly. GCC however will generate a line number of |
1979 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
1980 | ||
fa94de6b | 1981 | # 0 "<built-in>" |
47837f8e NC |
1982 | |
1983 | We do not want to barf on this, especially since such files are used | |
1984 | in the GCC and GDB testsuites. So we check for negative line numbers | |
1985 | rather than non-positive line numbers. */ | |
0e389e77 | 1986 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1987 | l + 1); |
252b5132 RH |
1988 | else |
1989 | { | |
93e914b2 | 1990 | int flags = 0; |
93e914b2 AO |
1991 | int length = 0; |
1992 | ||
1993 | if (!appline) | |
1994 | { | |
e9fc6c21 AO |
1995 | SKIP_WHITESPACE (); |
1996 | ||
1997 | if (*input_line_pointer == '"') | |
1998 | file = demand_copy_string (&length); | |
93e914b2 AO |
1999 | |
2000 | if (file) | |
2001 | { | |
2002 | int this_flag; | |
2003 | ||
e9fc6c21 | 2004 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
2005 | switch (this_flag) |
2006 | { | |
2007 | /* From GCC's cpp documentation: | |
2008 | 1: start of a new file. | |
2009 | 2: returning to a file after having included | |
fa94de6b | 2010 | another file. |
93e914b2 AO |
2011 | 3: following text comes from a system header file. |
2012 | 4: following text should be treated as extern "C". | |
2013 | ||
2014 | 4 is nonsensical for the assembler; 3, we don't | |
2015 | care about, so we ignore it just in case a | |
2016 | system header file is included while | |
2017 | preprocessing assembly. So 1 and 2 are all we | |
2018 | care about, and they are mutually incompatible. | |
2019 | new_logical_line_flags() demands this. */ | |
2020 | case 1: | |
2021 | case 2: | |
2022 | if (flags && flags != (1 << this_flag)) | |
2023 | as_warn (_("incompatible flag %i in line directive"), | |
2024 | this_flag); | |
2025 | else | |
2026 | flags |= 1 << this_flag; | |
2027 | break; | |
2028 | ||
2029 | case 3: | |
2030 | case 4: | |
2031 | /* We ignore these. */ | |
2032 | break; | |
2033 | ||
2034 | default: | |
2035 | as_warn (_("unsupported flag %i in line directive"), | |
2036 | this_flag); | |
2037 | break; | |
2038 | } | |
e9fc6c21 AO |
2039 | |
2040 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
2041 | file = 0; | |
93e914b2 AO |
2042 | } |
2043 | } | |
2044 | ||
e9fc6c21 AO |
2045 | if (appline || file) |
2046 | { | |
2047 | new_logical_line_flags (file, l, flags); | |
252b5132 | 2048 | #ifdef LISTING |
e9fc6c21 AO |
2049 | if (listing) |
2050 | listing_source_line (l); | |
252b5132 | 2051 | #endif |
e9fc6c21 | 2052 | } |
252b5132 | 2053 | } |
e9fc6c21 AO |
2054 | if (appline || file) |
2055 | demand_empty_rest_of_line (); | |
2056 | else | |
2057 | ignore_rest_of_line (); | |
252b5132 RH |
2058 | } |
2059 | ||
2060 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
2061 | read_a_source_file. */ | |
2062 | ||
2063 | void | |
39e6acbd | 2064 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2065 | { |
2066 | if (flag_mri) | |
2067 | { | |
2068 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 2069 | but we don't support that. */ |
252b5132 | 2070 | SKIP_WHITESPACE (); |
041ff4dd | 2071 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2072 | && *input_line_pointer != '*' |
2073 | && *input_line_pointer != '!') | |
2074 | as_warn (_("start address not supported")); | |
2075 | } | |
2076 | } | |
2077 | ||
2078 | /* Handle the .err pseudo-op. */ | |
2079 | ||
2080 | void | |
39e6acbd | 2081 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2082 | { |
2083 | as_bad (_(".err encountered")); | |
2084 | demand_empty_rest_of_line (); | |
d190d046 HPN |
2085 | } |
2086 | ||
2087 | /* Handle the .error and .warning pseudo-ops. */ | |
2088 | ||
2089 | void | |
2090 | s_errwarn (int err) | |
2091 | { | |
2092 | int len; | |
2093 | /* The purpose for the conditional assignment is not to | |
2094 | internationalize the directive itself, but that we need a | |
2095 | self-contained message, one that can be passed like the | |
2096 | demand_copy_C_string return value, and with no assumption on the | |
2097 | location of the name of the directive within the message. */ | |
2098 | char *msg | |
2099 | = (err ? _(".error directive invoked in source file") | |
2100 | : _(".warning directive invoked in source file")); | |
2101 | ||
2102 | if (!is_it_end_of_statement ()) | |
2103 | { | |
2104 | if (*input_line_pointer != '\"') | |
2105 | { | |
2106 | as_bad (_("%s argument must be a string"), | |
2107 | err ? ".error" : ".warning"); | |
40a4d956 | 2108 | ignore_rest_of_line (); |
d190d046 HPN |
2109 | return; |
2110 | } | |
2111 | ||
2112 | msg = demand_copy_C_string (&len); | |
2113 | if (msg == NULL) | |
2114 | return; | |
2115 | } | |
2116 | ||
2117 | if (err) | |
2118 | as_bad ("%s", msg); | |
2119 | else | |
2120 | as_warn ("%s", msg); | |
2121 | demand_empty_rest_of_line (); | |
252b5132 RH |
2122 | } |
2123 | ||
2124 | /* Handle the MRI fail pseudo-op. */ | |
2125 | ||
2126 | void | |
39e6acbd | 2127 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2128 | { |
2129 | offsetT temp; | |
2130 | char *stop = NULL; | |
fb25138b | 2131 | char stopc = 0; |
252b5132 RH |
2132 | |
2133 | if (flag_mri) | |
2134 | stop = mri_comment_field (&stopc); | |
2135 | ||
2136 | temp = get_absolute_expression (); | |
2137 | if (temp >= 500) | |
2138 | as_warn (_(".fail %ld encountered"), (long) temp); | |
2139 | else | |
2140 | as_bad (_(".fail %ld encountered"), (long) temp); | |
2141 | ||
2142 | demand_empty_rest_of_line (); | |
2143 | ||
2144 | if (flag_mri) | |
2145 | mri_comment_end (stop, stopc); | |
2146 | } | |
2147 | ||
041ff4dd | 2148 | void |
39e6acbd | 2149 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2150 | { |
2151 | expressionS rep_exp; | |
2152 | long size = 1; | |
3d540e93 | 2153 | long fill = 0; |
252b5132 RH |
2154 | char *p; |
2155 | ||
2156 | #ifdef md_flush_pending_output | |
2157 | md_flush_pending_output (); | |
2158 | #endif | |
2159 | ||
cc3f603a JM |
2160 | #ifdef md_cons_align |
2161 | md_cons_align (1); | |
2162 | #endif | |
2163 | ||
252b5132 RH |
2164 | get_known_segmented_expression (&rep_exp); |
2165 | if (*input_line_pointer == ',') | |
2166 | { | |
2167 | input_line_pointer++; | |
2168 | size = get_absolute_expression (); | |
2169 | if (*input_line_pointer == ',') | |
2170 | { | |
2171 | input_line_pointer++; | |
2172 | fill = get_absolute_expression (); | |
2173 | } | |
2174 | } | |
2175 | ||
2176 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
2177 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
2178 | if (size > BSD_FILL_SIZE_CROCK_8) | |
2179 | { | |
0e389e77 | 2180 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
2181 | size = BSD_FILL_SIZE_CROCK_8; |
2182 | } | |
2183 | if (size < 0) | |
2184 | { | |
0e389e77 | 2185 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
2186 | size = 0; |
2187 | } | |
2188 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
2189 | { | |
2190 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 2191 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
2192 | size = 0; |
2193 | } | |
2194 | ||
2195 | if (size && !need_pass_2) | |
2196 | { | |
2197 | if (rep_exp.X_op == O_constant) | |
2198 | { | |
2199 | p = frag_var (rs_fill, (int) size, (int) size, | |
2200 | (relax_substateT) 0, (symbolS *) 0, | |
2201 | (offsetT) rep_exp.X_add_number, | |
2202 | (char *) 0); | |
2203 | } | |
2204 | else | |
2205 | { | |
2206 | /* We don't have a constant repeat count, so we can't use | |
2207 | rs_fill. We can get the same results out of rs_space, | |
2208 | but its argument is in bytes, so we must multiply the | |
2209 | repeat count by size. */ | |
2210 | ||
2211 | symbolS *rep_sym; | |
2212 | rep_sym = make_expr_symbol (&rep_exp); | |
2213 | if (size != 1) | |
2214 | { | |
2215 | expressionS size_exp; | |
2216 | size_exp.X_op = O_constant; | |
2217 | size_exp.X_add_number = size; | |
2218 | ||
2219 | rep_exp.X_op = O_multiply; | |
2220 | rep_exp.X_add_symbol = rep_sym; | |
2221 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
2222 | rep_exp.X_add_number = 0; | |
2223 | rep_sym = make_expr_symbol (&rep_exp); | |
2224 | } | |
2225 | ||
2226 | p = frag_var (rs_space, (int) size, (int) size, | |
2227 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
2228 | } | |
f0e652b4 | 2229 | |
252b5132 | 2230 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2231 | |
252b5132 | 2232 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2233 | flavoured AS. The following bizarre behaviour is to be |
2234 | compatible with above. I guess they tried to take up to 8 | |
2235 | bytes from a 4-byte expression and they forgot to sign | |
2236 | extend. */ | |
252b5132 RH |
2237 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2238 | md_number_to_chars (p, (valueT) fill, | |
2239 | (size > BSD_FILL_SIZE_CROCK_4 | |
2240 | ? BSD_FILL_SIZE_CROCK_4 | |
2241 | : (int) size)); | |
2242 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2243 | but emits no error message because it seems a legal thing to do. |
2244 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2245 | compiler. */ |
252b5132 RH |
2246 | } |
2247 | demand_empty_rest_of_line (); | |
2248 | } | |
2249 | ||
041ff4dd | 2250 | void |
39e6acbd | 2251 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2252 | { |
2253 | char *name; | |
2254 | int c; | |
2255 | symbolS *symbolP; | |
2256 | char *stop = NULL; | |
fb25138b | 2257 | char stopc = 0; |
252b5132 RH |
2258 | |
2259 | if (flag_mri) | |
2260 | stop = mri_comment_field (&stopc); | |
2261 | ||
2262 | do | |
2263 | { | |
7bfd842d NC |
2264 | if ((name = read_symbol_name ()) == NULL) |
2265 | return; | |
2266 | ||
252b5132 | 2267 | symbolP = symbol_find_or_make (name); |
58b5739a RH |
2268 | S_SET_EXTERNAL (symbolP); |
2269 | ||
252b5132 | 2270 | SKIP_WHITESPACE (); |
58b5739a | 2271 | c = *input_line_pointer; |
252b5132 RH |
2272 | if (c == ',') |
2273 | { | |
2274 | input_line_pointer++; | |
2275 | SKIP_WHITESPACE (); | |
0e389e77 | 2276 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2277 | c = '\n'; |
2278 | } | |
7bfd842d NC |
2279 | |
2280 | free (name); | |
252b5132 RH |
2281 | } |
2282 | while (c == ','); | |
2283 | ||
2284 | demand_empty_rest_of_line (); | |
2285 | ||
2286 | if (flag_mri) | |
2287 | mri_comment_end (stop, stopc); | |
2288 | } | |
2289 | ||
2290 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2291 | ||
2292 | void | |
39e6acbd | 2293 | s_irp (int irpc) |
252b5132 | 2294 | { |
40a4d956 | 2295 | char *file, *eol; |
252b5132 RH |
2296 | unsigned int line; |
2297 | sb s; | |
2298 | const char *err; | |
2299 | sb out; | |
2300 | ||
2301 | as_where (&file, &line); | |
2302 | ||
40a4d956 | 2303 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2304 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2305 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2306 | input_line_pointer = eol; | |
252b5132 RH |
2307 | |
2308 | sb_new (&out); | |
2309 | ||
7592cfd7 | 2310 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2311 | if (err != NULL) |
2312 | as_bad_where (file, line, "%s", err); | |
2313 | ||
2314 | sb_kill (&s); | |
2315 | ||
9f10757c | 2316 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2317 | sb_kill (&out); |
2318 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2319 | } | |
2320 | ||
2321 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2322 | the section to only be linked once. However, this is not supported | |
2323 | by most object file formats. This takes an optional argument, | |
2324 | which is what to do about duplicates. */ | |
2325 | ||
2326 | void | |
39e6acbd | 2327 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2328 | { |
2329 | enum linkonce_type type; | |
2330 | ||
2331 | SKIP_WHITESPACE (); | |
2332 | ||
2333 | type = LINKONCE_DISCARD; | |
2334 | ||
041ff4dd | 2335 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2336 | { |
2337 | char *s; | |
2338 | char c; | |
2339 | ||
2340 | s = input_line_pointer; | |
2341 | c = get_symbol_end (); | |
2342 | if (strcasecmp (s, "discard") == 0) | |
2343 | type = LINKONCE_DISCARD; | |
2344 | else if (strcasecmp (s, "one_only") == 0) | |
2345 | type = LINKONCE_ONE_ONLY; | |
2346 | else if (strcasecmp (s, "same_size") == 0) | |
2347 | type = LINKONCE_SAME_SIZE; | |
2348 | else if (strcasecmp (s, "same_contents") == 0) | |
2349 | type = LINKONCE_SAME_CONTENTS; | |
2350 | else | |
2351 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2352 | ||
2353 | *input_line_pointer = c; | |
2354 | } | |
2355 | ||
2356 | #ifdef obj_handle_link_once | |
2357 | obj_handle_link_once (type); | |
2358 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2359 | { |
2360 | flagword flags; | |
2361 | ||
2362 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2363 | as_warn (_(".linkonce is not supported for this object file format")); | |
2364 | ||
2365 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2366 | flags |= SEC_LINK_ONCE; | |
2367 | switch (type) | |
2368 | { | |
2369 | default: | |
2370 | abort (); | |
2371 | case LINKONCE_DISCARD: | |
2372 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2373 | break; | |
2374 | case LINKONCE_ONE_ONLY: | |
2375 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2376 | break; | |
2377 | case LINKONCE_SAME_SIZE: | |
2378 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2379 | break; | |
2380 | case LINKONCE_SAME_CONTENTS: | |
2381 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2382 | break; | |
2383 | } | |
041ff4dd | 2384 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2385 | as_bad (_("bfd_set_section_flags: %s"), |
2386 | bfd_errmsg (bfd_get_error ())); | |
2387 | } | |
252b5132 RH |
2388 | #endif /* ! defined (obj_handle_link_once) */ |
2389 | ||
2390 | demand_empty_rest_of_line (); | |
2391 | } | |
2392 | ||
e13bab5a AM |
2393 | void |
2394 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2395 | { |
e13bab5a | 2396 | char *pfrag; |
252b5132 RH |
2397 | segT current_seg = now_seg; |
2398 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2399 | segT bss_seg = bss_section; |
2400 | ||
252b5132 RH |
2401 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2402 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2403 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2404 | { | |
2405 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2406 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2407 | { |
2408 | bss_seg = subseg_new (".sbss", 1); | |
2409 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2410 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2411 | as_warn (_("error setting flags for \".sbss\": %s"), |
2412 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2413 | } |
2414 | } | |
2415 | #endif | |
e13bab5a | 2416 | subseg_set (bss_seg, 1); |
8684e216 | 2417 | |
e13bab5a | 2418 | if (align) |
041ff4dd | 2419 | { |
e13bab5a AM |
2420 | record_alignment (bss_seg, align); |
2421 | frag_align (align, 0, 0); | |
041ff4dd | 2422 | } |
252b5132 | 2423 | |
e13bab5a AM |
2424 | /* Detach from old frag. */ |
2425 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2426 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2427 | |
e13bab5a AM |
2428 | symbol_set_frag (symbolP, frag_now); |
2429 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2430 | *pfrag = 0; | |
f0e652b4 | 2431 | |
e13bab5a AM |
2432 | #ifdef S_SET_SIZE |
2433 | S_SET_SIZE (symbolP, size); | |
2434 | #endif | |
2435 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2436 | |
e13bab5a AM |
2437 | #ifdef OBJ_COFF |
2438 | /* The symbol may already have been created with a preceding | |
2439 | ".globl" directive -- be careful not to step on storage class | |
2440 | in that case. Otherwise, set it to static. */ | |
2441 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2442 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2443 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2444 | |
e13bab5a AM |
2445 | subseg_set (current_seg, current_subseg); |
2446 | } | |
f0e652b4 | 2447 | |
e13bab5a AM |
2448 | offsetT |
2449 | parse_align (int align_bytes) | |
2450 | { | |
2451 | expressionS exp; | |
2452 | addressT align; | |
252b5132 | 2453 | |
e13bab5a AM |
2454 | SKIP_WHITESPACE (); |
2455 | if (*input_line_pointer != ',') | |
2456 | { | |
2457 | no_align: | |
2458 | as_bad (_("expected alignment after size")); | |
2459 | ignore_rest_of_line (); | |
2460 | return -1; | |
2461 | } | |
f0e652b4 | 2462 | |
e13bab5a AM |
2463 | input_line_pointer++; |
2464 | SKIP_WHITESPACE (); | |
f0e652b4 | 2465 | |
e13bab5a AM |
2466 | align = get_absolute_expr (&exp); |
2467 | if (exp.X_op == O_absent) | |
2468 | goto no_align; | |
2469 | ||
2470 | if (!exp.X_unsigned) | |
2471 | { | |
2472 | as_warn (_("alignment negative; 0 assumed")); | |
2473 | align = 0; | |
041ff4dd | 2474 | } |
e13bab5a AM |
2475 | |
2476 | if (align_bytes && align != 0) | |
252b5132 | 2477 | { |
e13bab5a AM |
2478 | /* convert to a power of 2 alignment */ |
2479 | unsigned int alignp2 = 0; | |
2480 | while ((align & 1) == 0) | |
2481 | align >>= 1, ++alignp2; | |
2482 | if (align != 1) | |
252b5132 | 2483 | { |
e13bab5a AM |
2484 | as_bad (_("alignment not a power of 2")); |
2485 | ignore_rest_of_line (); | |
2486 | return -1; | |
252b5132 | 2487 | } |
e13bab5a | 2488 | align = alignp2; |
252b5132 | 2489 | } |
e13bab5a AM |
2490 | return align; |
2491 | } | |
252b5132 | 2492 | |
e13bab5a AM |
2493 | /* Called from s_comm_internal after symbol name and size have been |
2494 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2495 | 1 if this was a ".bss" directive which has a 3rd argument | |
2496 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2497 | with alignment in bytes. */ | |
252b5132 | 2498 | |
13c56984 | 2499 | symbolS * |
e13bab5a AM |
2500 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2501 | { | |
2502 | addressT align = 0; | |
252b5132 | 2503 | |
e13bab5a AM |
2504 | if (needs_align) |
2505 | { | |
2506 | align = parse_align (needs_align - 1); | |
2507 | if (align == (addressT) -1) | |
2508 | return NULL; | |
252b5132 RH |
2509 | } |
2510 | else | |
e13bab5a AM |
2511 | /* Assume some objects may require alignment on some systems. */ |
2512 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2513 | |
e13bab5a AM |
2514 | bss_alloc (symbolP, size, align); |
2515 | return symbolP; | |
041ff4dd | 2516 | } |
252b5132 RH |
2517 | |
2518 | void | |
39e6acbd | 2519 | s_lcomm (int needs_align) |
252b5132 | 2520 | { |
e13bab5a | 2521 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2522 | } |
2523 | ||
041ff4dd | 2524 | void |
39e6acbd | 2525 | s_lcomm_bytes (int needs_align) |
252b5132 | 2526 | { |
e13bab5a | 2527 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2528 | } |
2529 | ||
041ff4dd | 2530 | void |
39e6acbd | 2531 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2532 | { |
3d540e93 | 2533 | char *name; |
252b5132 | 2534 | expressionS exp; |
3d540e93 | 2535 | symbolS *symbolP; |
252b5132 | 2536 | |
041ff4dd | 2537 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
7bfd842d NC |
2538 | if ((name = read_symbol_name ()) == NULL) |
2539 | return; | |
f0e652b4 | 2540 | |
252b5132 RH |
2541 | if (*input_line_pointer != ',') |
2542 | { | |
0e389e77 | 2543 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 2544 | goto err_out; |
252b5132 | 2545 | } |
f0e652b4 | 2546 | |
252b5132 | 2547 | input_line_pointer++; |
9497f5ac | 2548 | expression_and_evaluate (&exp); |
f0e652b4 | 2549 | |
252b5132 RH |
2550 | if (exp.X_op != O_constant |
2551 | && exp.X_op != O_register) | |
2552 | { | |
2553 | as_bad (_("bad expression")); | |
7bfd842d | 2554 | goto err_out; |
252b5132 | 2555 | } |
f0e652b4 | 2556 | |
252b5132 RH |
2557 | symbolP = symbol_find_or_make (name); |
2558 | ||
86ebace2 | 2559 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2560 | { |
2561 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2562 | keep the "external" bit. */ |
252b5132 RH |
2563 | S_SET_SEGMENT (symbolP, |
2564 | (exp.X_op == O_constant | |
2565 | ? absolute_section | |
2566 | : reg_section)); | |
2567 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2568 | } | |
2569 | else | |
2570 | { | |
0e389e77 | 2571 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2572 | } |
f0e652b4 | 2573 | |
252b5132 | 2574 | demand_empty_rest_of_line (); |
7bfd842d NC |
2575 | free (name); |
2576 | return; | |
2577 | ||
2578 | err_out: | |
2579 | ignore_rest_of_line (); | |
2580 | free (name); | |
2581 | return; | |
041ff4dd | 2582 | } |
252b5132 | 2583 | |
0822d075 NC |
2584 | /* Read a line into an sb. Returns the character that ended the line |
2585 | or zero if there are no more lines. */ | |
252b5132 RH |
2586 | |
2587 | static int | |
7592cfd7 | 2588 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2589 | { |
40a4d956 | 2590 | char *eol; |
252b5132 RH |
2591 | |
2592 | if (input_line_pointer[-1] == '\n') | |
2593 | bump_line_counters (); | |
2594 | ||
2595 | if (input_line_pointer >= buffer_limit) | |
2596 | { | |
2597 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2598 | if (buffer_limit == 0) | |
2599 | return 0; | |
2600 | } | |
2601 | ||
7592cfd7 | 2602 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2603 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2604 | input_line_pointer = eol; | |
f0e652b4 | 2605 | |
0822d075 NC |
2606 | /* Don't skip multiple end-of-line characters, because that breaks support |
2607 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2608 | characters but isn't. Instead just skip one end of line character and | |
2609 | return the character skipped so that the caller can re-insert it if | |
2610 | necessary. */ | |
40a4d956 | 2611 | return *input_line_pointer++; |
252b5132 RH |
2612 | } |
2613 | ||
39a45edc | 2614 | static size_t |
7592cfd7 NC |
2615 | get_non_macro_line_sb (sb *line) |
2616 | { | |
2617 | return get_line_sb (line, 0); | |
2618 | } | |
2619 | ||
39a45edc | 2620 | static size_t |
7592cfd7 NC |
2621 | get_macro_line_sb (sb *line) |
2622 | { | |
2623 | return get_line_sb (line, 1); | |
2624 | } | |
2625 | ||
fea17916 | 2626 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2627 | |
2628 | void | |
39e6acbd | 2629 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2630 | { |
40a4d956 | 2631 | char *file, *eol; |
252b5132 RH |
2632 | unsigned int line; |
2633 | sb s; | |
252b5132 RH |
2634 | const char *err; |
2635 | const char *name; | |
2636 | ||
2637 | as_where (&file, &line); | |
2638 | ||
40a4d956 | 2639 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2640 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2641 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2642 | input_line_pointer = eol; | |
252b5132 | 2643 | |
252b5132 | 2644 | if (line_label != NULL) |
360e86f1 JB |
2645 | { |
2646 | sb label; | |
d2ae702c | 2647 | size_t len; |
252b5132 | 2648 | |
d2ae702c L |
2649 | name = S_GET_NAME (line_label); |
2650 | len = strlen (name); | |
2651 | sb_build (&label, len); | |
2652 | sb_add_buffer (&label, name, len); | |
7592cfd7 | 2653 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2654 | sb_kill (&label); |
2655 | } | |
2656 | else | |
7592cfd7 | 2657 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2658 | if (err != NULL) |
02ddf156 | 2659 | as_bad_where (file, line, err, name); |
252b5132 RH |
2660 | else |
2661 | { | |
2662 | if (line_label != NULL) | |
2663 | { | |
5e75c3ab | 2664 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2665 | S_SET_VALUE (line_label, 0); |
2b47531b | 2666 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2667 | } |
2668 | ||
abd63a32 | 2669 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2670 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2671 | || (!flag_m68k_mri |
252b5132 RH |
2672 | && *name == '.' |
2673 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2674 | as_warn_where (file, |
2675 | line, | |
2676 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2677 | name); |
2678 | } | |
2679 | ||
2680 | sb_kill (&s); | |
2681 | } | |
2682 | ||
2683 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2684 | expansion. */ | |
2685 | ||
2686 | void | |
39e6acbd | 2687 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2688 | { |
5808f4a6 NC |
2689 | if (macro_nest) |
2690 | { | |
2691 | cond_exit_macro (macro_nest); | |
2692 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2693 | } | |
2694 | else | |
2695 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2696 | } |
2697 | ||
2698 | /* Switch in and out of MRI mode. */ | |
2699 | ||
2700 | void | |
39e6acbd | 2701 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2702 | { |
3d540e93 NC |
2703 | int on; |
2704 | #ifdef MRI_MODE_CHANGE | |
2705 | int old_flag; | |
2706 | #endif | |
252b5132 RH |
2707 | |
2708 | on = get_absolute_expression (); | |
3d540e93 | 2709 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2710 | old_flag = flag_mri; |
3d540e93 | 2711 | #endif |
252b5132 RH |
2712 | if (on != 0) |
2713 | { | |
2714 | flag_mri = 1; | |
2715 | #ifdef TC_M68K | |
2716 | flag_m68k_mri = 1; | |
2717 | #endif | |
2718 | macro_mri_mode (1); | |
2719 | } | |
2720 | else | |
2721 | { | |
2722 | flag_mri = 0; | |
abd63a32 | 2723 | #ifdef TC_M68K |
252b5132 | 2724 | flag_m68k_mri = 0; |
abd63a32 | 2725 | #endif |
252b5132 RH |
2726 | macro_mri_mode (0); |
2727 | } | |
2728 | ||
2729 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2730 | update the operator rankings. */ | |
2731 | expr_set_precedence (); | |
2732 | ||
2733 | #ifdef MRI_MODE_CHANGE | |
2734 | if (on != old_flag) | |
2735 | MRI_MODE_CHANGE (on); | |
2736 | #endif | |
2737 | ||
2738 | demand_empty_rest_of_line (); | |
2739 | } | |
2740 | ||
2741 | /* Handle changing the location counter. */ | |
2742 | ||
2743 | static void | |
39e6acbd | 2744 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 | 2745 | { |
259af69e AM |
2746 | if (segment != now_seg |
2747 | && segment != absolute_section | |
2748 | && segment != expr_section) | |
0e389e77 | 2749 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2750 | |
2751 | if (now_seg == absolute_section) | |
2752 | { | |
2753 | if (fill != 0) | |
2754 | as_warn (_("ignoring fill value in absolute section")); | |
2755 | if (exp->X_op != O_constant) | |
2756 | { | |
2757 | as_bad (_("only constant offsets supported in absolute section")); | |
2758 | exp->X_add_number = 0; | |
2759 | } | |
2760 | abs_section_offset = exp->X_add_number; | |
2761 | } | |
2762 | else | |
2763 | { | |
2764 | char *p; | |
2289f85d AM |
2765 | symbolS *sym = exp->X_add_symbol; |
2766 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2767 | |
2289f85d AM |
2768 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2769 | { | |
2770 | /* Handle complex expressions. */ | |
2771 | sym = make_expr_symbol (exp); | |
2772 | off = 0; | |
2773 | } | |
2774 | ||
2775 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2776 | *p = fill; |
2777 | } | |
2778 | } | |
2779 | ||
041ff4dd | 2780 | void |
39e6acbd | 2781 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2782 | { |
3d540e93 | 2783 | segT segment; |
252b5132 | 2784 | expressionS exp; |
3d540e93 | 2785 | long temp_fill; |
252b5132 RH |
2786 | |
2787 | #ifdef md_flush_pending_output | |
2788 | md_flush_pending_output (); | |
2789 | #endif | |
2790 | ||
2791 | /* The m68k MRI assembler has a different meaning for .org. It | |
2792 | means to create an absolute section at a given address. We can't | |
2793 | support that--use a linker script instead. */ | |
2794 | if (flag_m68k_mri) | |
2795 | { | |
2796 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2797 | ignore_rest_of_line (); | |
2798 | return; | |
2799 | } | |
2800 | ||
2801 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2802 | thing as a sub-segment-relative origin. Any absolute origin is | |
2803 | given a warning, then assumed to be segment-relative. Any | |
2804 | segmented origin expression ("foo+42") had better be in the right | |
2805 | segment or the .org is ignored. | |
2806 | ||
2807 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2808 | we never know sub-segment sizes when we are reading code. BSD | |
2809 | will crash trying to emit negative numbers of filler bytes in | |
2810 | certain .orgs. We don't crash, but see as-write for that code. | |
2811 | ||
2812 | Don't make frag if need_pass_2==1. */ | |
2813 | segment = get_known_segmented_expression (&exp); | |
2814 | if (*input_line_pointer == ',') | |
2815 | { | |
2816 | input_line_pointer++; | |
2817 | temp_fill = get_absolute_expression (); | |
2818 | } | |
2819 | else | |
2820 | temp_fill = 0; | |
2821 | ||
2822 | if (!need_pass_2) | |
2823 | do_org (segment, &exp, temp_fill); | |
2824 | ||
2825 | demand_empty_rest_of_line (); | |
041ff4dd | 2826 | } |
252b5132 RH |
2827 | |
2828 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2829 | called by the obj-format routine which handles section changing | |
2830 | when in MRI mode. It will create a new section, and return it. It | |
2831 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2832 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2833 | |
2834 | void | |
39e6acbd | 2835 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2836 | { |
2837 | #ifdef TC_M68K | |
2838 | ||
2839 | char *name; | |
2840 | char c; | |
2841 | segT seg; | |
2842 | ||
2843 | SKIP_WHITESPACE (); | |
041ff4dd | 2844 | |
252b5132 | 2845 | name = input_line_pointer; |
3882b010 | 2846 | if (!ISDIGIT (*name)) |
252b5132 RH |
2847 | c = get_symbol_end (); |
2848 | else | |
2849 | { | |
2850 | do | |
2851 | { | |
2852 | ++input_line_pointer; | |
2853 | } | |
3882b010 | 2854 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2855 | |
252b5132 RH |
2856 | c = *input_line_pointer; |
2857 | *input_line_pointer = '\0'; | |
2858 | } | |
2859 | ||
2860 | name = xstrdup (name); | |
2861 | ||
2862 | *input_line_pointer = c; | |
2863 | ||
2864 | seg = subseg_new (name, 0); | |
2865 | ||
2866 | if (*input_line_pointer == ',') | |
2867 | { | |
2868 | int align; | |
2869 | ||
2870 | ++input_line_pointer; | |
2871 | align = get_absolute_expression (); | |
2872 | record_alignment (seg, align); | |
2873 | } | |
2874 | ||
2875 | *type = 'C'; | |
2876 | if (*input_line_pointer == ',') | |
2877 | { | |
2878 | c = *++input_line_pointer; | |
3882b010 | 2879 | c = TOUPPER (c); |
252b5132 RH |
2880 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2881 | *type = c; | |
2882 | else | |
2883 | as_bad (_("unrecognized section type")); | |
2884 | ++input_line_pointer; | |
2885 | ||
252b5132 RH |
2886 | { |
2887 | flagword flags; | |
2888 | ||
2889 | flags = SEC_NO_FLAGS; | |
2890 | if (*type == 'C') | |
2891 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2892 | else if (*type == 'D' || *type == 'M') | |
2893 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2894 | else if (*type == 'R') | |
2895 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2896 | if (flags != SEC_NO_FLAGS) | |
2897 | { | |
041ff4dd | 2898 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2899 | as_warn (_("error setting flags for \"%s\": %s"), |
2900 | bfd_section_name (stdoutput, seg), | |
2901 | bfd_errmsg (bfd_get_error ())); | |
2902 | } | |
2903 | } | |
252b5132 RH |
2904 | } |
2905 | ||
2906 | /* Ignore the HP type. */ | |
2907 | if (*input_line_pointer == ',') | |
2908 | input_line_pointer += 2; | |
2909 | ||
2910 | demand_empty_rest_of_line (); | |
2911 | ||
2912 | #else /* ! TC_M68K */ | |
2913 | #ifdef TC_I960 | |
2914 | ||
2915 | char *name; | |
2916 | char c; | |
2917 | segT seg; | |
2918 | ||
2919 | SKIP_WHITESPACE (); | |
2920 | ||
2921 | name = input_line_pointer; | |
2922 | c = get_symbol_end (); | |
2923 | ||
2924 | name = xstrdup (name); | |
2925 | ||
2926 | *input_line_pointer = c; | |
2927 | ||
2928 | seg = subseg_new (name, 0); | |
2929 | ||
2930 | if (*input_line_pointer != ',') | |
2931 | *type = 'C'; | |
2932 | else | |
2933 | { | |
2934 | char *sectype; | |
2935 | ||
2936 | ++input_line_pointer; | |
2937 | SKIP_WHITESPACE (); | |
2938 | sectype = input_line_pointer; | |
2939 | c = get_symbol_end (); | |
2940 | if (*sectype == '\0') | |
2941 | *type = 'C'; | |
2942 | else if (strcasecmp (sectype, "text") == 0) | |
2943 | *type = 'C'; | |
2944 | else if (strcasecmp (sectype, "data") == 0) | |
2945 | *type = 'D'; | |
2946 | else if (strcasecmp (sectype, "romdata") == 0) | |
2947 | *type = 'R'; | |
2948 | else | |
2949 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2950 | *input_line_pointer = c; | |
2951 | } | |
2952 | ||
2953 | if (*input_line_pointer == ',') | |
2954 | { | |
2955 | char *seccmd; | |
2956 | ||
2957 | ++input_line_pointer; | |
2958 | SKIP_WHITESPACE (); | |
2959 | seccmd = input_line_pointer; | |
2960 | c = get_symbol_end (); | |
2961 | if (strcasecmp (seccmd, "absolute") == 0) | |
2962 | { | |
2963 | as_bad (_("absolute sections are not supported")); | |
2964 | *input_line_pointer = c; | |
2965 | ignore_rest_of_line (); | |
2966 | return; | |
2967 | } | |
2968 | else if (strcasecmp (seccmd, "align") == 0) | |
2969 | { | |
2970 | int align; | |
2971 | ||
2972 | *input_line_pointer = c; | |
2973 | align = get_absolute_expression (); | |
2974 | record_alignment (seg, align); | |
2975 | } | |
2976 | else | |
2977 | { | |
2978 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2979 | *input_line_pointer = c; | |
2980 | } | |
2981 | } | |
2982 | ||
041ff4dd | 2983 | demand_empty_rest_of_line (); |
252b5132 RH |
2984 | |
2985 | #else /* ! TC_I960 */ | |
2986 | /* The MRI assembler seems to use different forms of .sect for | |
2987 | different targets. */ | |
2988 | as_bad ("MRI mode not supported for this target"); | |
2989 | ignore_rest_of_line (); | |
2990 | #endif /* ! TC_I960 */ | |
2991 | #endif /* ! TC_M68K */ | |
2992 | } | |
2993 | ||
2994 | /* Handle the .print pseudo-op. */ | |
2995 | ||
2996 | void | |
39e6acbd | 2997 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2998 | { |
2999 | char *s; | |
3000 | int len; | |
3001 | ||
3002 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
3003 | if (s != NULL) |
3004 | printf ("%s\n", s); | |
252b5132 RH |
3005 | demand_empty_rest_of_line (); |
3006 | } | |
3007 | ||
3008 | /* Handle the .purgem pseudo-op. */ | |
3009 | ||
3010 | void | |
39e6acbd | 3011 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3012 | { |
3013 | if (is_it_end_of_statement ()) | |
3014 | { | |
3015 | demand_empty_rest_of_line (); | |
3016 | return; | |
3017 | } | |
3018 | ||
3019 | do | |
3020 | { | |
3021 | char *name; | |
3022 | char c; | |
3023 | ||
3024 | SKIP_WHITESPACE (); | |
3025 | name = input_line_pointer; | |
3026 | c = get_symbol_end (); | |
3027 | delete_macro (name); | |
3028 | *input_line_pointer = c; | |
3029 | SKIP_WHITESPACE (); | |
3030 | } | |
3031 | while (*input_line_pointer++ == ','); | |
3032 | ||
3033 | --input_line_pointer; | |
3034 | demand_empty_rest_of_line (); | |
3035 | } | |
3036 | ||
057f53c1 | 3037 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 3038 | |
057f53c1 JB |
3039 | static void |
3040 | s_bad_end (int endr) | |
7f28ab9d | 3041 | { |
cc643b88 | 3042 | as_warn (_(".end%c encountered without preceding %s"), |
057f53c1 JB |
3043 | endr ? 'r' : 'm', |
3044 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
3045 | demand_empty_rest_of_line (); |
3046 | } | |
3047 | ||
3048 | /* Handle the .rept pseudo-op. */ | |
3049 | ||
252b5132 | 3050 | void |
39e6acbd | 3051 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3052 | { |
3053 | int count; | |
252b5132 RH |
3054 | |
3055 | count = get_absolute_expression (); | |
3056 | ||
041ff4dd | 3057 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
3058 | } |
3059 | ||
3060 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 3061 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
3062 | |
3063 | void | |
39e6acbd | 3064 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
3065 | { |
3066 | sb one; | |
3067 | sb many; | |
3068 | ||
252b5132 | 3069 | sb_new (&one); |
7592cfd7 | 3070 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 3071 | { |
6dc19fc4 | 3072 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
3073 | return; |
3074 | } | |
3075 | ||
d2ae702c | 3076 | sb_build (&many, count * one.len); |
252b5132 RH |
3077 | while (count-- > 0) |
3078 | sb_add_sb (&many, &one); | |
3079 | ||
3080 | sb_kill (&one); | |
3081 | ||
9f10757c | 3082 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
3083 | sb_kill (&many); |
3084 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3085 | } | |
3086 | ||
c7927a3c NC |
3087 | /* Like do_repeat except that any text matching EXPANDER in the |
3088 | block is replaced by the itteration count. */ | |
3089 | ||
3090 | void | |
3091 | do_repeat_with_expander (int count, | |
3092 | const char * start, | |
3093 | const char * end, | |
3094 | const char * expander) | |
3095 | { | |
3096 | sb one; | |
3097 | sb many; | |
3098 | ||
3099 | sb_new (&one); | |
3100 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3101 | { | |
3102 | as_bad (_("%s without %s"), start, end); | |
3103 | return; | |
3104 | } | |
3105 | ||
3106 | sb_new (&many); | |
3107 | ||
3108 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3109 | { | |
3110 | while (count -- > 0) | |
3111 | { | |
3112 | int len; | |
3113 | char * sub; | |
3114 | sb processed; | |
3115 | ||
d2ae702c | 3116 | sb_build (& processed, one.len); |
c7927a3c NC |
3117 | sb_add_sb (& processed, & one); |
3118 | sub = strstr (processed.ptr, expander); | |
3119 | len = sprintf (sub, "%d", count); | |
3120 | gas_assert (len < 8); | |
3121 | strcpy (sub + len, sub + 8); | |
3122 | processed.len -= (8 - len); | |
3123 | sb_add_sb (& many, & processed); | |
3124 | sb_kill (& processed); | |
3125 | } | |
3126 | } | |
3127 | else | |
3128 | while (count-- > 0) | |
3129 | sb_add_sb (&many, &one); | |
3130 | ||
3131 | sb_kill (&one); | |
3132 | ||
3133 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3134 | sb_kill (&many); | |
3135 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3136 | } | |
3137 | ||
6dc19fc4 TW |
3138 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3139 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3140 | are properly nested. |
6dc19fc4 TW |
3141 | |
3142 | This function makes it easier to implement a premature "break" out of the | |
3143 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3144 | such as line substitutions. */ |
6dc19fc4 TW |
3145 | |
3146 | void | |
39e6acbd | 3147 | end_repeat (int extra) |
6dc19fc4 TW |
3148 | { |
3149 | cond_exit_macro (macro_nest); | |
3150 | while (extra-- >= 0) | |
3151 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3152 | } | |
3153 | ||
be95a9c1 | 3154 | static void |
9497f5ac | 3155 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3156 | { |
3157 | symbolS *symbolP; | |
3158 | ||
3159 | if (name[0] == '.' && name[1] == '\0') | |
3160 | { | |
3161 | /* Turn '. = mumble' into a .org mumble. */ | |
3162 | segT segment; | |
3163 | expressionS exp; | |
3164 | ||
3165 | segment = get_known_segmented_expression (&exp); | |
3166 | ||
3167 | if (!need_pass_2) | |
3168 | do_org (segment, &exp, 0); | |
3169 | ||
3170 | return; | |
3171 | } | |
3172 | ||
3173 | if ((symbolP = symbol_find (name)) == NULL | |
3174 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3175 | { | |
3176 | symbolP = symbol_find_or_make (name); | |
3177 | #ifndef NO_LISTING | |
3178 | /* When doing symbol listings, play games with dummy fragments living | |
3179 | outside the normal fragment chain to record the file and line info | |
3180 | for this symbol. */ | |
3181 | if (listing & LISTING_SYMBOLS) | |
3182 | { | |
3183 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 3184 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
3185 | dummy_frag->line = listing_tail; |
3186 | dummy_frag->fr_symbol = symbolP; | |
3187 | symbol_set_frag (symbolP, dummy_frag); | |
3188 | } | |
3189 | #endif | |
31d20a21 AM |
3190 | #ifdef OBJ_COFF |
3191 | /* "set" symbols are local unless otherwise specified. */ | |
3192 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3193 | #endif |
3194 | } | |
3195 | ||
6a2b6326 | 3196 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac | 3197 | { |
9497f5ac | 3198 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) |
6885131b | 3199 | && !S_CAN_BE_REDEFINED (symbolP)) |
9497f5ac NC |
3200 | { |
3201 | as_bad (_("symbol `%s' is already defined"), name); | |
3202 | symbolP = symbol_clone (symbolP, 0); | |
3203 | } | |
3204 | /* If the symbol is volatile, copy the symbol and replace the | |
3205 | original with the copy, so that previous uses of the symbol will | |
3206 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3207 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3208 | symbolP = symbol_clone (symbolP, 1); |
3209 | } | |
3210 | ||
3211 | if (mode == 0) | |
3212 | S_SET_VOLATILE (symbolP); | |
3213 | else if (mode < 0) | |
3214 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3215 | |
3216 | pseudo_set (symbolP); | |
be95a9c1 AM |
3217 | } |
3218 | ||
9497f5ac NC |
3219 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3220 | then this is .equiv, and it is an error if the symbol is already | |
3221 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3222 | reference. */ | |
252b5132 | 3223 | |
041ff4dd | 3224 | void |
39e6acbd | 3225 | s_set (int equiv) |
252b5132 | 3226 | { |
be95a9c1 | 3227 | char *name; |
252b5132 | 3228 | |
041ff4dd NC |
3229 | /* Especial apologies for the random logic: |
3230 | this just grew, and could be parsed much more simply! | |
3231 | Dean in haste. */ | |
7bfd842d NC |
3232 | if ((name = read_symbol_name ()) == NULL) |
3233 | return; | |
252b5132 RH |
3234 | |
3235 | if (*input_line_pointer != ',') | |
3236 | { | |
0e389e77 | 3237 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 | 3238 | ignore_rest_of_line (); |
7bfd842d | 3239 | free (name); |
252b5132 RH |
3240 | return; |
3241 | } | |
3242 | ||
3243 | input_line_pointer++; | |
be95a9c1 | 3244 | assign_symbol (name, equiv); |
31d20a21 | 3245 | demand_empty_rest_of_line (); |
7bfd842d | 3246 | free (name); |
041ff4dd | 3247 | } |
252b5132 | 3248 | |
041ff4dd | 3249 | void |
39e6acbd | 3250 | s_space (int mult) |
252b5132 RH |
3251 | { |
3252 | expressionS exp; | |
3253 | expressionS val; | |
3254 | char *p = 0; | |
3255 | char *stop = NULL; | |
fb25138b | 3256 | char stopc = 0; |
252b5132 RH |
3257 | int bytes; |
3258 | ||
3259 | #ifdef md_flush_pending_output | |
3260 | md_flush_pending_output (); | |
3261 | #endif | |
3262 | ||
cc3f603a JM |
3263 | #ifdef md_cons_align |
3264 | md_cons_align (1); | |
3265 | #endif | |
3266 | ||
252b5132 RH |
3267 | if (flag_mri) |
3268 | stop = mri_comment_field (&stopc); | |
3269 | ||
3270 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3271 | this is ds.b. */ | |
3272 | if (flag_m68k_mri && mult > 1) | |
3273 | { | |
3274 | if (now_seg == absolute_section) | |
3275 | { | |
3276 | abs_section_offset += abs_section_offset & 1; | |
3277 | if (line_label != NULL) | |
3278 | S_SET_VALUE (line_label, abs_section_offset); | |
3279 | } | |
3280 | else if (mri_common_symbol != NULL) | |
3281 | { | |
91d6fa6a | 3282 | valueT mri_val; |
252b5132 | 3283 | |
91d6fa6a NC |
3284 | mri_val = S_GET_VALUE (mri_common_symbol); |
3285 | if ((mri_val & 1) != 0) | |
252b5132 | 3286 | { |
91d6fa6a | 3287 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3288 | if (line_label != NULL) |
3289 | { | |
2b47531b ILT |
3290 | expressionS *symexp; |
3291 | ||
3292 | symexp = symbol_get_value_expression (line_label); | |
3293 | know (symexp->X_op == O_symbol); | |
3294 | know (symexp->X_add_symbol == mri_common_symbol); | |
3295 | symexp->X_add_number += 1; | |
252b5132 RH |
3296 | } |
3297 | } | |
3298 | } | |
3299 | else | |
3300 | { | |
3301 | do_align (1, (char *) NULL, 0, 0); | |
3302 | if (line_label != NULL) | |
3303 | { | |
2b47531b | 3304 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3305 | S_SET_VALUE (line_label, frag_now_fix ()); |
3306 | } | |
3307 | } | |
3308 | } | |
3309 | ||
3310 | bytes = mult; | |
3311 | ||
3312 | expression (&exp); | |
3313 | ||
3314 | SKIP_WHITESPACE (); | |
3315 | if (*input_line_pointer == ',') | |
3316 | { | |
3317 | ++input_line_pointer; | |
3318 | expression (&val); | |
3319 | } | |
3320 | else | |
3321 | { | |
3322 | val.X_op = O_constant; | |
3323 | val.X_add_number = 0; | |
3324 | } | |
3325 | ||
3326 | if (val.X_op != O_constant | |
3327 | || val.X_add_number < - 0x80 | |
3328 | || val.X_add_number > 0xff | |
3329 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3330 | { | |
9497f5ac | 3331 | resolve_expression (&exp); |
252b5132 | 3332 | if (exp.X_op != O_constant) |
0e389e77 | 3333 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3334 | else |
3335 | { | |
3336 | offsetT i; | |
3337 | ||
3338 | if (mult == 0) | |
3339 | mult = 1; | |
3340 | bytes = mult * exp.X_add_number; | |
3341 | for (i = 0; i < exp.X_add_number; i++) | |
3342 | emit_expr (&val, mult); | |
3343 | } | |
3344 | } | |
3345 | else | |
3346 | { | |
9497f5ac NC |
3347 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3348 | resolve_expression (&exp); | |
3349 | ||
252b5132 RH |
3350 | if (exp.X_op == O_constant) |
3351 | { | |
a4a151e6 | 3352 | offsetT repeat; |
252b5132 RH |
3353 | |
3354 | repeat = exp.X_add_number; | |
3355 | if (mult) | |
3356 | repeat *= mult; | |
3357 | bytes = repeat; | |
3358 | if (repeat <= 0) | |
3359 | { | |
2d150871 RO |
3360 | if (!flag_mri) |
3361 | as_warn (_(".space repeat count is zero, ignored")); | |
3362 | else if (repeat < 0) | |
252b5132 RH |
3363 | as_warn (_(".space repeat count is negative, ignored")); |
3364 | goto getout; | |
3365 | } | |
3366 | ||
3367 | /* If we are in the absolute section, just bump the offset. */ | |
3368 | if (now_seg == absolute_section) | |
3369 | { | |
3370 | abs_section_offset += repeat; | |
3371 | goto getout; | |
3372 | } | |
3373 | ||
3374 | /* If we are secretly in an MRI common section, then | |
3375 | creating space just increases the size of the common | |
3376 | symbol. */ | |
3377 | if (mri_common_symbol != NULL) | |
3378 | { | |
3379 | S_SET_VALUE (mri_common_symbol, | |
3380 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3381 | goto getout; | |
3382 | } | |
3383 | ||
3384 | if (!need_pass_2) | |
3385 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3386 | (offsetT) repeat, (char *) 0); | |
3387 | } | |
3388 | else | |
3389 | { | |
3390 | if (now_seg == absolute_section) | |
3391 | { | |
3392 | as_bad (_("space allocation too complex in absolute section")); | |
3393 | subseg_set (text_section, 0); | |
3394 | } | |
f0e652b4 | 3395 | |
252b5132 RH |
3396 | if (mri_common_symbol != NULL) |
3397 | { | |
3398 | as_bad (_("space allocation too complex in common section")); | |
3399 | mri_common_symbol = NULL; | |
3400 | } | |
f0e652b4 | 3401 | |
252b5132 RH |
3402 | if (!need_pass_2) |
3403 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3404 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3405 | } | |
3406 | ||
3407 | if (p) | |
3408 | *p = val.X_add_number; | |
3409 | } | |
3410 | ||
3411 | getout: | |
3412 | ||
3413 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3414 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3415 | or dcb.b. */ | |
3416 | if (flag_mri && (bytes & 1) != 0) | |
3417 | mri_pending_align = 1; | |
3418 | ||
3419 | demand_empty_rest_of_line (); | |
3420 | ||
3421 | if (flag_mri) | |
3422 | mri_comment_end (stop, stopc); | |
3423 | } | |
3424 | ||
3425 | /* This is like s_space, but the value is a floating point number with | |
3426 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3427 | friends. */ | |
3428 | ||
3429 | void | |
39e6acbd | 3430 | s_float_space (int float_type) |
252b5132 RH |
3431 | { |
3432 | offsetT count; | |
3433 | int flen; | |
3434 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3435 | char *stop = NULL; | |
fb25138b | 3436 | char stopc = 0; |
252b5132 | 3437 | |
cc3f603a JM |
3438 | #ifdef md_cons_align |
3439 | md_cons_align (1); | |
3440 | #endif | |
3441 | ||
252b5132 RH |
3442 | if (flag_mri) |
3443 | stop = mri_comment_field (&stopc); | |
3444 | ||
3445 | count = get_absolute_expression (); | |
3446 | ||
3447 | SKIP_WHITESPACE (); | |
3448 | if (*input_line_pointer != ',') | |
3449 | { | |
3450 | as_bad (_("missing value")); | |
3451 | ignore_rest_of_line (); | |
3452 | if (flag_mri) | |
3453 | mri_comment_end (stop, stopc); | |
3454 | return; | |
3455 | } | |
3456 | ||
3457 | ++input_line_pointer; | |
3458 | ||
3459 | SKIP_WHITESPACE (); | |
3460 | ||
3461 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3462 | * letter is legal. */ | |
3463 | if (input_line_pointer[0] == '0' | |
3882b010 | 3464 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3465 | input_line_pointer += 2; |
3466 | ||
3467 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3468 | with the exact digits specified. */ | |
3469 | if (input_line_pointer[0] == ':') | |
3470 | { | |
3471 | flen = hex_float (float_type, temp); | |
3472 | if (flen < 0) | |
3473 | { | |
3474 | ignore_rest_of_line (); | |
3475 | if (flag_mri) | |
3476 | mri_comment_end (stop, stopc); | |
3477 | return; | |
3478 | } | |
3479 | } | |
3480 | else | |
3481 | { | |
3482 | char *err; | |
3483 | ||
3484 | err = md_atof (float_type, temp, &flen); | |
3485 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3486 | know (err != NULL || flen > 0); |
252b5132 RH |
3487 | if (err) |
3488 | { | |
0e389e77 | 3489 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3490 | ignore_rest_of_line (); |
3491 | if (flag_mri) | |
3492 | mri_comment_end (stop, stopc); | |
3493 | return; | |
3494 | } | |
3495 | } | |
3496 | ||
3497 | while (--count >= 0) | |
3498 | { | |
3499 | char *p; | |
3500 | ||
3501 | p = frag_more (flen); | |
3502 | memcpy (p, temp, (unsigned int) flen); | |
3503 | } | |
3504 | ||
3505 | demand_empty_rest_of_line (); | |
3506 | ||
3507 | if (flag_mri) | |
3508 | mri_comment_end (stop, stopc); | |
3509 | } | |
3510 | ||
3511 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3512 | ||
3513 | void | |
39e6acbd | 3514 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3515 | { |
3516 | char *stop = NULL; | |
fb25138b | 3517 | char stopc = 0; |
252b5132 RH |
3518 | |
3519 | if (flag_mri) | |
3520 | stop = mri_comment_field (&stopc); | |
3521 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3522 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3523 | /* The ELF backend needs to know that we are changing sections, so | |
3524 | that .previous works correctly. */ | |
f43abd2b | 3525 | if (IS_ELF) |
a2902af6 TS |
3526 | obj_elf_section_change_hook (); |
3527 | #endif | |
252b5132 RH |
3528 | subseg_set (absolute_section, 0); |
3529 | demand_empty_rest_of_line (); | |
3530 | if (flag_mri) | |
3531 | mri_comment_end (stop, stopc); | |
3532 | } | |
3533 | ||
3534 | void | |
39e6acbd | 3535 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3536 | { |
3d540e93 | 3537 | int temp; |
252b5132 RH |
3538 | |
3539 | temp = get_absolute_expression (); | |
3540 | subseg_set (text_section, (subsegT) temp); | |
3541 | demand_empty_rest_of_line (); | |
041ff4dd | 3542 | } |
06e77878 AO |
3543 | |
3544 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3545 | referenced directly, will cause y to become a weak symbol. */ | |
3546 | void | |
3547 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3548 | { | |
3549 | char *name; | |
06e77878 AO |
3550 | symbolS *symbolP; |
3551 | symbolS *symbolP2; | |
3552 | expressionS exp; | |
3553 | ||
7bfd842d NC |
3554 | if ((name = read_symbol_name ()) == NULL) |
3555 | return; | |
06e77878 AO |
3556 | |
3557 | symbolP = symbol_find_or_make (name); | |
3558 | ||
b54788f8 AO |
3559 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3560 | { | |
89cdfe57 | 3561 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3562 | { |
3563 | as_bad (_("symbol `%s' is already defined"), name); | |
7bfd842d | 3564 | goto err_out; |
92757bc9 | 3565 | } |
89cdfe57 | 3566 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3567 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3568 | } |
3569 | ||
06e77878 AO |
3570 | SKIP_WHITESPACE (); |
3571 | ||
3572 | if (*input_line_pointer != ',') | |
3573 | { | |
06e77878 | 3574 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 3575 | goto err_out; |
06e77878 AO |
3576 | } |
3577 | ||
3578 | input_line_pointer++; | |
3579 | ||
3580 | SKIP_WHITESPACE (); | |
7bfd842d | 3581 | free (name); |
06e77878 | 3582 | |
7bfd842d NC |
3583 | if ((name = read_symbol_name ()) == NULL) |
3584 | return; | |
06e77878 AO |
3585 | |
3586 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3587 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3588 | { | |
3589 | symbolP2 = symbol_find_or_make (name); | |
3590 | S_SET_WEAKREFD (symbolP2); | |
3591 | } | |
3592 | else | |
3593 | { | |
3594 | symbolS *symp = symbolP2; | |
3595 | ||
3596 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3597 | { | |
3598 | expressionS *expP = symbol_get_value_expression (symp); | |
3599 | ||
9c2799c2 | 3600 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3601 | && expP->X_add_number == 0); |
3602 | symp = expP->X_add_symbol; | |
3603 | } | |
3604 | if (symp == symbolP) | |
3605 | { | |
3606 | char *loop; | |
3607 | ||
3608 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3609 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3610 | |
3611 | symp = symbolP2; | |
3612 | while (symp != symbolP) | |
3613 | { | |
3614 | char *old_loop = loop; | |
7bfd842d | 3615 | |
06e77878 | 3616 | symp = symbol_get_value_expression (symp)->X_add_symbol; |
1bf57e9f AM |
3617 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3618 | (const char *) NULL); | |
06e77878 AO |
3619 | free (old_loop); |
3620 | } | |
3621 | ||
3622 | as_bad (_("%s: would close weakref loop: %s"), | |
3623 | S_GET_NAME (symbolP), loop); | |
3624 | ||
3625 | free (loop); | |
7bfd842d | 3626 | free (name); |
06e77878 AO |
3627 | ignore_rest_of_line (); |
3628 | return; | |
3629 | } | |
3630 | ||
3631 | /* Short-circuiting instead of just checking here might speed | |
3632 | things up a tiny little bit, but loop error messages would | |
3633 | miss intermediate links. */ | |
3634 | /* symbolP2 = symp; */ | |
3635 | } | |
3636 | ||
06e77878 AO |
3637 | memset (&exp, 0, sizeof (exp)); |
3638 | exp.X_op = O_symbol; | |
3639 | exp.X_add_symbol = symbolP2; | |
3640 | ||
3641 | S_SET_SEGMENT (symbolP, undefined_section); | |
3642 | symbol_set_value_expression (symbolP, &exp); | |
3643 | symbol_set_frag (symbolP, &zero_address_frag); | |
3644 | S_SET_WEAKREFR (symbolP); | |
3645 | ||
3646 | demand_empty_rest_of_line (); | |
7bfd842d NC |
3647 | free (name); |
3648 | return; | |
3649 | ||
3650 | err_out: | |
3651 | ignore_rest_of_line (); | |
3652 | free (name); | |
3653 | return; | |
06e77878 | 3654 | } |
252b5132 | 3655 | \f |
c95b35a9 NS |
3656 | |
3657 | /* Verify that we are at the end of a line. If not, issue an error and | |
3658 | skip to EOL. */ | |
3659 | ||
041ff4dd | 3660 | void |
39e6acbd | 3661 | demand_empty_rest_of_line (void) |
252b5132 RH |
3662 | { |
3663 | SKIP_WHITESPACE (); | |
3664 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3665 | input_line_pointer++; |
252b5132 | 3666 | else |
252b5132 | 3667 | { |
3882b010 | 3668 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3669 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3670 | *input_line_pointer); |
252b5132 | 3671 | else |
c95b35a9 | 3672 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3673 | *input_line_pointer); |
c95b35a9 | 3674 | ignore_rest_of_line (); |
252b5132 | 3675 | } |
fa94de6b | 3676 | |
c95b35a9 NS |
3677 | /* Return pointing just after end-of-line. */ |
3678 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3679 | } | |
3680 | ||
3681 | /* Silently advance to the end of line. Use this after already having | |
3682 | issued an error about something bad. */ | |
3683 | ||
3684 | void | |
3685 | ignore_rest_of_line (void) | |
3686 | { | |
3687 | while (input_line_pointer < buffer_limit | |
3688 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3689 | input_line_pointer++; | |
f0e652b4 | 3690 | |
041ff4dd NC |
3691 | input_line_pointer++; |
3692 | ||
3693 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3694 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3695 | } | |
3696 | ||
be95a9c1 AM |
3697 | /* Sets frag for given symbol to zero_address_frag, except when the |
3698 | symbol frag is already set to a dummy listing frag. */ | |
3699 | ||
3700 | static void | |
3701 | set_zero_frag (symbolS *symbolP) | |
3702 | { | |
3703 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3704 | symbol_set_frag (symbolP, &zero_address_frag); | |
3705 | } | |
3706 | ||
041ff4dd | 3707 | /* In: Pointer to a symbol. |
d6415f6c | 3708 | Input_line_pointer->expression. |
f0e652b4 | 3709 | |
041ff4dd | 3710 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3711 | Tried to set symbol to value of expression. |
3712 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3713 | |
252b5132 | 3714 | void |
39e6acbd | 3715 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3716 | { |
3717 | expressionS exp; | |
be95a9c1 | 3718 | segT seg; |
252b5132 | 3719 | |
041ff4dd | 3720 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3721 | |
9497f5ac NC |
3722 | if (!S_IS_FORWARD_REF (symbolP)) |
3723 | (void) expression (&exp); | |
3724 | else | |
3725 | (void) deferred_expression (&exp); | |
252b5132 RH |
3726 | |
3727 | if (exp.X_op == O_illegal) | |
0e389e77 | 3728 | as_bad (_("illegal expression")); |
252b5132 | 3729 | else if (exp.X_op == O_absent) |
0e389e77 | 3730 | as_bad (_("missing expression")); |
252b5132 RH |
3731 | else if (exp.X_op == O_big) |
3732 | { | |
3733 | if (exp.X_add_number > 0) | |
0e389e77 | 3734 | as_bad (_("bignum invalid")); |
252b5132 | 3735 | else |
0e389e77 | 3736 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3737 | } |
3738 | else if (exp.X_op == O_subtract | |
9497f5ac | 3739 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3740 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3741 | && (symbol_get_frag (exp.X_add_symbol) |
3742 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3743 | { |
3744 | exp.X_op = O_constant; | |
3745 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3746 | - S_GET_VALUE (exp.X_op_symbol)); | |
3747 | } | |
3748 | ||
be95a9c1 AM |
3749 | if (symbol_section_p (symbolP)) |
3750 | { | |
3751 | as_bad ("attempt to set value of section symbol"); | |
3752 | return; | |
3753 | } | |
be95a9c1 | 3754 | |
252b5132 RH |
3755 | switch (exp.X_op) |
3756 | { | |
3757 | case O_illegal: | |
3758 | case O_absent: | |
3759 | case O_big: | |
3760 | exp.X_add_number = 0; | |
3761 | /* Fall through. */ | |
3762 | case O_constant: | |
3763 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3764 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3765 | set_zero_frag (symbolP); |
252b5132 RH |
3766 | break; |
3767 | ||
3768 | case O_register: | |
97c4f2d9 | 3769 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3770 | if (S_IS_EXTERNAL (symbolP)) |
3771 | { | |
3772 | as_bad ("can't equate global symbol `%s' with register name", | |
3773 | S_GET_NAME (symbolP)); | |
3774 | return; | |
3775 | } | |
97c4f2d9 | 3776 | #endif |
252b5132 RH |
3777 | S_SET_SEGMENT (symbolP, reg_section); |
3778 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3779 | set_zero_frag (symbolP); |
db557034 | 3780 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3781 | break; |
3782 | ||
3783 | case O_symbol: | |
be95a9c1 AM |
3784 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3785 | /* For x=undef+const, create an expression symbol. | |
3786 | For x=x+const, just update x except when x is an undefined symbol | |
3787 | For x=defined+const, evaluate x. */ | |
3788 | if (symbolP == exp.X_add_symbol | |
3789 | && (seg != undefined_section | |
3790 | || !symbol_constant_p (symbolP))) | |
3791 | { | |
3792 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3793 | break; | |
3794 | } | |
9497f5ac | 3795 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3796 | { |
3797 | symbolS *s = exp.X_add_symbol; | |
3798 | ||
60938e80 L |
3799 | if (S_IS_COMMON (s)) |
3800 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3801 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3802 | ||
be95a9c1 AM |
3803 | S_SET_SEGMENT (symbolP, seg); |
3804 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3805 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3806 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3807 | break; |
252b5132 | 3808 | } |
66bd02d3 AM |
3809 | S_SET_SEGMENT (symbolP, undefined_section); |
3810 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 3811 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
3812 | set_zero_frag (symbolP); |
3813 | break; | |
252b5132 RH |
3814 | |
3815 | default: | |
aba4aa7d AM |
3816 | /* The value is some complex expression. */ |
3817 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3818 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3819 | set_zero_frag (symbolP); |
252b5132 RH |
3820 | break; |
3821 | } | |
3822 | } | |
3823 | \f | |
d6415f6c | 3824 | /* cons() |
f0e652b4 | 3825 | |
041ff4dd NC |
3826 | CONStruct more frag of .bytes, or .words etc. |
3827 | Should need_pass_2 be 1 then emit no frag(s). | |
3828 | This understands EXPRESSIONS. | |
f0e652b4 | 3829 | |
041ff4dd | 3830 | Bug (?) |
f0e652b4 | 3831 | |
041ff4dd NC |
3832 | This has a split personality. We use expression() to read the |
3833 | value. We can detect if the value won't fit in a byte or word. | |
3834 | But we can't detect if expression() discarded significant digits | |
3835 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3836 | |
3837 | /* Select a parser for cons expressions. */ | |
3838 | ||
3839 | /* Some targets need to parse the expression in various fancy ways. | |
3840 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3841 | (for example, the HPPA does this). Otherwise, you can define | |
3842 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3843 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3844 | are defined, which is the normal case, then only simple expressions | |
3845 | are permitted. */ | |
3846 | ||
abd63a32 | 3847 | #ifdef TC_M68K |
252b5132 | 3848 | static void |
39e6acbd | 3849 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3850 | #endif |
252b5132 RH |
3851 | |
3852 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3853 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3854 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3855 | static void |
39e6acbd | 3856 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3857 | #endif |
3858 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3859 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3860 | static void | |
39e6acbd | 3861 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3862 | #endif |
3863 | ||
3864 | /* If we haven't gotten one yet, just call expression. */ | |
3865 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3866 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3867 | #endif | |
3868 | #endif | |
3869 | ||
cdfbf930 | 3870 | void |
b41b1f95 L |
3871 | do_parse_cons_expression (expressionS *exp, |
3872 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3873 | { |
3874 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3875 | } | |
3876 | ||
3877 | ||
041ff4dd NC |
3878 | /* Worker to do .byte etc statements. |
3879 | Clobbers input_line_pointer and checks end-of-line. */ | |
3880 | ||
3881 | static void | |
3d540e93 | 3882 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 3883 | int rva) |
252b5132 RH |
3884 | { |
3885 | int c; | |
3886 | expressionS exp; | |
3887 | char *stop = NULL; | |
fb25138b | 3888 | char stopc = 0; |
252b5132 RH |
3889 | |
3890 | #ifdef md_flush_pending_output | |
3891 | md_flush_pending_output (); | |
3892 | #endif | |
3893 | ||
3894 | if (flag_mri) | |
3895 | stop = mri_comment_field (&stopc); | |
3896 | ||
3897 | if (is_it_end_of_statement ()) | |
3898 | { | |
3899 | demand_empty_rest_of_line (); | |
3900 | if (flag_mri) | |
3901 | mri_comment_end (stop, stopc); | |
3902 | return; | |
3903 | } | |
3904 | ||
cc1bc22a AM |
3905 | #ifdef TC_ADDRESS_BYTES |
3906 | if (nbytes == 0) | |
3907 | nbytes = TC_ADDRESS_BYTES (); | |
3908 | #endif | |
3909 | ||
252b5132 RH |
3910 | #ifdef md_cons_align |
3911 | md_cons_align (nbytes); | |
3912 | #endif | |
3913 | ||
3914 | c = 0; | |
3915 | do | |
3916 | { | |
abd63a32 | 3917 | #ifdef TC_M68K |
252b5132 RH |
3918 | if (flag_m68k_mri) |
3919 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3920 | else | |
abd63a32 | 3921 | #endif |
fa94de6b | 3922 | { |
847d4311 NS |
3923 | if (*input_line_pointer == '"') |
3924 | { | |
3925 | as_bad (_("unexpected `\"' in expression")); | |
3926 | ignore_rest_of_line (); | |
3927 | return; | |
3928 | } | |
3929 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); | |
3930 | } | |
252b5132 RH |
3931 | |
3932 | if (rva) | |
3933 | { | |
3934 | if (exp.X_op == O_symbol) | |
3935 | exp.X_op = O_symbol_rva; | |
3936 | else | |
3937 | as_fatal (_("rva without symbol")); | |
3938 | } | |
3939 | emit_expr (&exp, (unsigned int) nbytes); | |
3940 | ++c; | |
3941 | } | |
3942 | while (*input_line_pointer++ == ','); | |
3943 | ||
3944 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3945 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3946 | or dcb.b. */ | |
3947 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3948 | mri_pending_align = 1; | |
3949 | ||
041ff4dd | 3950 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3951 | |
3952 | demand_empty_rest_of_line (); | |
3953 | ||
3954 | if (flag_mri) | |
3955 | mri_comment_end (stop, stopc); | |
3956 | } | |
3957 | ||
252b5132 | 3958 | void |
39e6acbd | 3959 | cons (int size) |
252b5132 RH |
3960 | { |
3961 | cons_worker (size, 0); | |
3962 | } | |
3963 | ||
041ff4dd | 3964 | void |
39e6acbd | 3965 | s_rva (int size) |
252b5132 RH |
3966 | { |
3967 | cons_worker (size, 1); | |
3968 | } | |
3969 | ||
05e9452c AM |
3970 | /* .reloc offset, reloc_name, symbol+addend. */ |
3971 | ||
3972 | void | |
3973 | s_reloc (int ignore ATTRIBUTE_UNUSED) | |
3974 | { | |
3975 | char *stop = NULL; | |
3976 | char stopc = 0; | |
3977 | expressionS exp; | |
3978 | char *r_name; | |
3979 | int c; | |
3980 | struct reloc_list *reloc; | |
3981 | ||
1e9cc1c2 | 3982 | reloc = (struct reloc_list *) xmalloc (sizeof (*reloc)); |
05e9452c AM |
3983 | |
3984 | if (flag_mri) | |
3985 | stop = mri_comment_field (&stopc); | |
3986 | ||
3987 | expression (&exp); | |
3988 | switch (exp.X_op) | |
3989 | { | |
3990 | case O_illegal: | |
3991 | case O_absent: | |
3992 | case O_big: | |
3993 | case O_register: | |
3994 | as_bad (_("missing or bad offset expression")); | |
3995 | goto err_out; | |
3996 | case O_constant: | |
3997 | exp.X_add_symbol = section_symbol (now_seg); | |
3998 | exp.X_op = O_symbol; | |
3999 | /* Fall thru */ | |
4000 | case O_symbol: | |
4001 | if (exp.X_add_number == 0) | |
4002 | { | |
4003 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
4004 | break; | |
4005 | } | |
4006 | /* Fall thru */ | |
4007 | default: | |
4008 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
4009 | break; | |
4010 | } | |
4011 | ||
4012 | SKIP_WHITESPACE (); | |
4013 | if (*input_line_pointer != ',') | |
4014 | { | |
4015 | as_bad (_("missing reloc type")); | |
4016 | goto err_out; | |
4017 | } | |
4018 | ||
4019 | ++input_line_pointer; | |
4020 | SKIP_WHITESPACE (); | |
4021 | r_name = input_line_pointer; | |
4022 | c = get_symbol_end (); | |
4023 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
4024 | *input_line_pointer = c; | |
4025 | if (reloc->u.a.howto == NULL) | |
4026 | { | |
4027 | as_bad (_("unrecognized reloc type")); | |
4028 | goto err_out; | |
4029 | } | |
4030 | ||
4031 | exp.X_op = O_absent; | |
4032 | SKIP_WHITESPACE (); | |
4033 | if (*input_line_pointer == ',') | |
4034 | { | |
4035 | ++input_line_pointer; | |
c188d0bb | 4036 | expression (&exp); |
05e9452c AM |
4037 | } |
4038 | switch (exp.X_op) | |
4039 | { | |
4040 | case O_illegal: | |
4041 | case O_big: | |
4042 | case O_register: | |
4043 | as_bad (_("bad reloc expression")); | |
4044 | err_out: | |
4045 | ignore_rest_of_line (); | |
4046 | free (reloc); | |
4047 | if (flag_mri) | |
4048 | mri_comment_end (stop, stopc); | |
4049 | return; | |
4050 | case O_absent: | |
4051 | reloc->u.a.sym = NULL; | |
4052 | reloc->u.a.addend = 0; | |
4053 | break; | |
4054 | case O_constant: | |
4055 | reloc->u.a.sym = NULL; | |
4056 | reloc->u.a.addend = exp.X_add_number; | |
4057 | break; | |
4058 | case O_symbol: | |
4059 | reloc->u.a.sym = exp.X_add_symbol; | |
4060 | reloc->u.a.addend = exp.X_add_number; | |
4061 | break; | |
4062 | default: | |
4063 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4064 | reloc->u.a.addend = 0; | |
4065 | break; | |
4066 | } | |
4067 | ||
4068 | as_where (&reloc->file, &reloc->line); | |
4069 | reloc->next = reloc_list; | |
4070 | reloc_list = reloc; | |
4071 | ||
4072 | demand_empty_rest_of_line (); | |
4073 | if (flag_mri) | |
4074 | mri_comment_end (stop, stopc); | |
4075 | } | |
4076 | ||
252b5132 RH |
4077 | /* Put the contents of expression EXP into the object file using |
4078 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4079 | ||
4080 | void | |
39e6acbd | 4081 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4082 | { |
4083 | operatorT op; | |
3d540e93 | 4084 | char *p; |
252b5132 RH |
4085 | valueT extra_digit = 0; |
4086 | ||
4087 | /* Don't do anything if we are going to make another pass. */ | |
4088 | if (need_pass_2) | |
4089 | return; | |
4090 | ||
4bc25101 | 4091 | frag_grow (nbytes); |
ed7d5d1a | 4092 | dot_value = frag_now_fix (); |
8e723a10 | 4093 | dot_frag = frag_now; |
ed7d5d1a | 4094 | |
252b5132 RH |
4095 | #ifndef NO_LISTING |
4096 | #ifdef OBJ_ELF | |
4097 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4098 | appear as a four byte positive constant in the .line section, | |
4099 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4100 | { | |
4101 | static int dwarf_line = -1; | |
4102 | ||
4103 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4104 | dwarf_line = -1; | |
4105 | else if (dwarf_line >= 0 | |
4106 | && nbytes == 2 | |
4107 | && exp->X_op == O_constant | |
4108 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4109 | listing_source_line ((unsigned int) dwarf_line); | |
4110 | else if (nbytes == 4 | |
4111 | && exp->X_op == O_constant | |
4112 | && exp->X_add_number >= 0) | |
4113 | dwarf_line = exp->X_add_number; | |
4114 | else | |
4115 | dwarf_line = -1; | |
4116 | } | |
4117 | ||
4118 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4119 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4120 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4121 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4122 | file. We look for that case here. */ | |
4123 | { | |
4124 | static int dwarf_file = 0; | |
4125 | ||
4126 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4127 | dwarf_file = 0; | |
4128 | else if (dwarf_file == 0 | |
4129 | && nbytes == 2 | |
4130 | && exp->X_op == O_constant | |
4131 | && exp->X_add_number == 0x11) | |
4132 | dwarf_file = 1; | |
4133 | else if (dwarf_file == 1 | |
4134 | && nbytes == 2 | |
4135 | && exp->X_op == O_constant | |
4136 | && exp->X_add_number == 0x12) | |
4137 | dwarf_file = 2; | |
4138 | else if (dwarf_file == 2 | |
4139 | && nbytes == 4) | |
4140 | dwarf_file = 3; | |
4141 | else if (dwarf_file == 3 | |
4142 | && nbytes == 2 | |
4143 | && exp->X_op == O_constant | |
4144 | && exp->X_add_number == 0x38) | |
4145 | dwarf_file = 4; | |
4146 | else | |
4147 | dwarf_file = 0; | |
4148 | ||
4149 | /* The variable dwarf_file_string tells stringer that the string | |
4150 | may be the name of the source file. */ | |
4151 | if (dwarf_file == 4) | |
4152 | dwarf_file_string = 1; | |
4153 | else | |
4154 | dwarf_file_string = 0; | |
4155 | } | |
4156 | #endif | |
4157 | #endif | |
4158 | ||
4159 | if (check_eh_frame (exp, &nbytes)) | |
4160 | return; | |
4161 | ||
4162 | op = exp->X_op; | |
4163 | ||
4164 | /* Allow `.word 0' in the absolute section. */ | |
4165 | if (now_seg == absolute_section) | |
4166 | { | |
4167 | if (op != O_constant || exp->X_add_number != 0) | |
4168 | as_bad (_("attempt to store value in absolute section")); | |
4169 | abs_section_offset += nbytes; | |
4170 | return; | |
4171 | } | |
4172 | ||
4173 | /* Handle a negative bignum. */ | |
4174 | if (op == O_uminus | |
4175 | && exp->X_add_number == 0 | |
2b47531b ILT |
4176 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4177 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4178 | { |
4179 | int i; | |
4180 | unsigned long carry; | |
4181 | ||
2b47531b | 4182 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4183 | |
4184 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4185 | carry = 1; | |
4186 | for (i = 0; i < exp->X_add_number; i++) | |
4187 | { | |
4188 | unsigned long next; | |
4189 | ||
041ff4dd | 4190 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4191 | & LITTLENUM_MASK) |
4192 | + carry); | |
4193 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4194 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4195 | } | |
4196 | ||
4197 | /* We can ignore any carry out, because it will be handled by | |
4198 | extra_digit if it is needed. */ | |
4199 | ||
4200 | extra_digit = (valueT) -1; | |
4201 | op = O_big; | |
4202 | } | |
4203 | ||
4204 | if (op == O_absent || op == O_illegal) | |
4205 | { | |
4206 | as_warn (_("zero assumed for missing expression")); | |
4207 | exp->X_add_number = 0; | |
4208 | op = O_constant; | |
4209 | } | |
4210 | else if (op == O_big && exp->X_add_number <= 0) | |
4211 | { | |
0e389e77 | 4212 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4213 | exp->X_add_number = 0; |
4214 | op = O_constant; | |
4215 | } | |
4216 | else if (op == O_register) | |
4217 | { | |
4218 | as_warn (_("register value used as expression")); | |
4219 | op = O_constant; | |
4220 | } | |
4221 | ||
4222 | p = frag_more ((int) nbytes); | |
4223 | ||
4224 | #ifndef WORKING_DOT_WORD | |
4225 | /* If we have the difference of two symbols in a word, save it on | |
4226 | the broken_words list. See the code in write.c. */ | |
4227 | if (op == O_subtract && nbytes == 2) | |
4228 | { | |
4229 | struct broken_word *x; | |
4230 | ||
4231 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
4232 | x->next_broken_word = broken_words; | |
4233 | broken_words = x; | |
4234 | x->seg = now_seg; | |
4235 | x->subseg = now_subseg; | |
4236 | x->frag = frag_now; | |
4237 | x->word_goes_here = p; | |
4238 | x->dispfrag = 0; | |
4239 | x->add = exp->X_add_symbol; | |
4240 | x->sub = exp->X_op_symbol; | |
4241 | x->addnum = exp->X_add_number; | |
4242 | x->added = 0; | |
dc59a897 | 4243 | x->use_jump = 0; |
252b5132 RH |
4244 | new_broken_words++; |
4245 | return; | |
4246 | } | |
4247 | #endif | |
4248 | ||
4249 | /* If we have an integer, but the number of bytes is too large to | |
4250 | pass to md_number_to_chars, handle it as a bignum. */ | |
4251 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4252 | { | |
e5604d79 | 4253 | extra_digit = exp->X_unsigned ? 0 : -1; |
956a6ba3 | 4254 | convert_to_bignum (exp, !exp->X_unsigned); |
e5604d79 | 4255 | op = O_big; |
252b5132 RH |
4256 | } |
4257 | ||
4258 | if (op == O_constant) | |
4259 | { | |
3d540e93 NC |
4260 | valueT get; |
4261 | valueT use; | |
4262 | valueT mask; | |
252b5132 | 4263 | valueT hibit; |
3d540e93 | 4264 | valueT unmask; |
252b5132 RH |
4265 | |
4266 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4267 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4268 | if (nbytes >= sizeof (valueT)) |
4269 | { | |
4270 | mask = 0; | |
4271 | if (nbytes > sizeof (valueT)) | |
4272 | hibit = 0; | |
4273 | else | |
4274 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4275 | } | |
4276 | else | |
4277 | { | |
041ff4dd | 4278 | /* Don't store these bits. */ |
252b5132 RH |
4279 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4280 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4281 | } | |
4282 | ||
041ff4dd | 4283 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4284 | |
4285 | #ifdef NEVER | |
4286 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4287 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4288 | #endif |
4289 | ||
4290 | get = exp->X_add_number; | |
4291 | use = get & unmask; | |
4292 | if ((get & mask) != 0 | |
4293 | && ((get & mask) != mask | |
4294 | || (get & hibit) == 0)) | |
041ff4dd | 4295 | { /* Leading bits contain both 0s & 1s. */ |
b6ac5419 | 4296 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4297 | #ifndef __MSVCRT__ |
5c612369 NC |
4298 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4299 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4300 | #else |
4301 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4302 | (unsigned long long) get, (unsigned long long) use); | |
4303 | #endif | |
b6ac5419 AM |
4304 | #else |
4305 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4306 | (unsigned long) get, (unsigned long) use); | |
4307 | #endif | |
252b5132 | 4308 | } |
041ff4dd | 4309 | /* Put bytes in right order. */ |
252b5132 RH |
4310 | md_number_to_chars (p, use, (int) nbytes); |
4311 | } | |
4312 | else if (op == O_big) | |
4313 | { | |
4314 | unsigned int size; | |
4315 | LITTLENUM_TYPE *nums; | |
4316 | ||
252b5132 RH |
4317 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4318 | if (nbytes < size) | |
4319 | { | |
93d90f46 AM |
4320 | int i = nbytes / CHARS_PER_LITTLENUM; |
4321 | if (i != 0) | |
4322 | { | |
4323 | LITTLENUM_TYPE sign = 0; | |
4324 | if ((generic_bignum[--i] | |
4325 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4326 | sign = ~(LITTLENUM_TYPE) 0; | |
4327 | while (++i < exp->X_add_number) | |
4328 | if (generic_bignum[i] != sign) | |
4329 | break; | |
4330 | } | |
4331 | if (i < exp->X_add_number) | |
4332 | as_warn (_("bignum truncated to %d bytes"), nbytes); | |
252b5132 RH |
4333 | size = nbytes; |
4334 | } | |
4335 | ||
93d90f46 AM |
4336 | if (nbytes == 1) |
4337 | { | |
4338 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4339 | return; | |
4340 | } | |
4341 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4342 | ||
252b5132 RH |
4343 | if (target_big_endian) |
4344 | { | |
4345 | while (nbytes > size) | |
4346 | { | |
4347 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4348 | nbytes -= CHARS_PER_LITTLENUM; | |
4349 | p += CHARS_PER_LITTLENUM; | |
4350 | } | |
4351 | ||
4352 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4353 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4354 | { |
4355 | --nums; | |
4356 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4357 | size -= CHARS_PER_LITTLENUM; | |
4358 | p += CHARS_PER_LITTLENUM; | |
4359 | } | |
4360 | } | |
4361 | else | |
4362 | { | |
4363 | nums = generic_bignum; | |
ceac3f62 | 4364 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4365 | { |
4366 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4367 | ++nums; | |
4368 | size -= CHARS_PER_LITTLENUM; | |
4369 | p += CHARS_PER_LITTLENUM; | |
4370 | nbytes -= CHARS_PER_LITTLENUM; | |
4371 | } | |
4372 | ||
ceac3f62 | 4373 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4374 | { |
4375 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4376 | nbytes -= CHARS_PER_LITTLENUM; | |
4377 | p += CHARS_PER_LITTLENUM; | |
4378 | } | |
4379 | } | |
4380 | } | |
4381 | else | |
7ddd14de BW |
4382 | emit_expr_fix (exp, nbytes, frag_now, p); |
4383 | } | |
4384 | ||
4385 | void | |
4386 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p) | |
4387 | { | |
4388 | memset (p, 0, nbytes); | |
252b5132 | 4389 | |
7ddd14de | 4390 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4391 | |
252b5132 | 4392 | #ifdef TC_CONS_FIX_NEW |
7ddd14de | 4393 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal, nbytes, exp); |
252b5132 | 4394 | #else |
7ddd14de BW |
4395 | { |
4396 | bfd_reloc_code_real_type r; | |
252b5132 | 4397 | |
7ddd14de BW |
4398 | switch (nbytes) |
4399 | { | |
4400 | case 1: | |
4401 | r = BFD_RELOC_8; | |
4402 | break; | |
4403 | case 2: | |
4404 | r = BFD_RELOC_16; | |
4405 | break; | |
d4f4f3fb AM |
4406 | case 3: |
4407 | r = BFD_RELOC_24; | |
4408 | break; | |
7ddd14de BW |
4409 | case 4: |
4410 | r = BFD_RELOC_32; | |
4411 | break; | |
4412 | case 8: | |
4413 | r = BFD_RELOC_64; | |
4414 | break; | |
4415 | default: | |
4416 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
4417 | r = BFD_RELOC_32; | |
4418 | break; | |
252b5132 | 4419 | } |
7ddd14de BW |
4420 | fix_new_exp (frag, p - frag->fr_literal, (int) nbytes, exp, |
4421 | 0, r); | |
4422 | } | |
252b5132 | 4423 | #endif |
252b5132 RH |
4424 | } |
4425 | \f | |
4426 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
4427 | ||
4428 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
4429 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
4430 | then pack them all together. We do a little better in that we allow | |
4431 | them in words, longs, etc. and we'll pack them in target byte order | |
4432 | for you. | |
4433 | ||
47eebc20 | 4434 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
4435 | entirely fit, put it in the next unit. Overflowing the bitfield is |
4436 | explicitly *not* even a warning. The bitwidth should be considered | |
4437 | a "mask". | |
4438 | ||
4439 | To use this function the tc-XXX.h file should define | |
4440 | BITFIELD_CONS_EXPRESSIONS. */ | |
4441 | ||
041ff4dd | 4442 | static void |
252b5132 RH |
4443 | parse_bitfield_cons (exp, nbytes) |
4444 | expressionS *exp; | |
4445 | unsigned int nbytes; | |
4446 | { | |
4447 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
4448 | char *hold = input_line_pointer; | |
4449 | ||
4450 | (void) expression (exp); | |
4451 | ||
4452 | if (*input_line_pointer == ':') | |
041ff4dd NC |
4453 | { |
4454 | /* Bitfields. */ | |
252b5132 RH |
4455 | long value = 0; |
4456 | ||
4457 | for (;;) | |
4458 | { | |
4459 | unsigned long width; | |
4460 | ||
4461 | if (*input_line_pointer != ':') | |
4462 | { | |
4463 | input_line_pointer = hold; | |
4464 | break; | |
041ff4dd | 4465 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
4466 | |
4467 | /* In the general case, we can't allow | |
4468 | full expressions with symbol | |
4469 | differences and such. The relocation | |
4470 | entries for symbols not defined in this | |
4471 | assembly would require arbitrary field | |
4472 | widths, positions, and masks which most | |
4473 | of our current object formats don't | |
4474 | support. | |
4475 | ||
4476 | In the specific case where a symbol | |
4477 | *is* defined in this assembly, we | |
4478 | *could* build fixups and track it, but | |
4479 | this could lead to confusion for the | |
4480 | backends. I'm lazy. I'll take any | |
4481 | SEG_ABSOLUTE. I think that means that | |
4482 | you can use a previous .set or | |
041ff4dd | 4483 | .equ type symbol. xoxorich. */ |
252b5132 RH |
4484 | |
4485 | if (exp->X_op == O_absent) | |
4486 | { | |
4487 | as_warn (_("using a bit field width of zero")); | |
4488 | exp->X_add_number = 0; | |
4489 | exp->X_op = O_constant; | |
041ff4dd | 4490 | } /* Implied zero width bitfield. */ |
252b5132 RH |
4491 | |
4492 | if (exp->X_op != O_constant) | |
4493 | { | |
4494 | *input_line_pointer = '\0'; | |
4495 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
4496 | *input_line_pointer = ':'; | |
4497 | demand_empty_rest_of_line (); | |
4498 | return; | |
041ff4dd | 4499 | } /* Too complex. */ |
252b5132 RH |
4500 | |
4501 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
4502 | { | |
4503 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
4504 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
4505 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 4506 | } /* Too big. */ |
252b5132 RH |
4507 | |
4508 | if (width > bits_available) | |
4509 | { | |
4510 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
4511 | input_line_pointer = hold; | |
4512 | exp->X_add_number = value; | |
4513 | break; | |
041ff4dd | 4514 | } /* Won't fit. */ |
252b5132 | 4515 | |
ef99799a KH |
4516 | /* Skip ':'. */ |
4517 | hold = ++input_line_pointer; | |
252b5132 RH |
4518 | |
4519 | (void) expression (exp); | |
4520 | if (exp->X_op != O_constant) | |
4521 | { | |
4522 | char cache = *input_line_pointer; | |
4523 | ||
4524 | *input_line_pointer = '\0'; | |
4525 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
4526 | *input_line_pointer = cache; | |
4527 | demand_empty_rest_of_line (); | |
4528 | return; | |
041ff4dd | 4529 | } /* Too complex. */ |
252b5132 RH |
4530 | |
4531 | value |= ((~(-1 << width) & exp->X_add_number) | |
4532 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
4533 | ||
4534 | if ((bits_available -= width) == 0 | |
4535 | || is_it_end_of_statement () | |
4536 | || *input_line_pointer != ',') | |
4537 | { | |
4538 | break; | |
041ff4dd | 4539 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4540 | |
4541 | hold = ++input_line_pointer; | |
4542 | (void) expression (exp); | |
041ff4dd | 4543 | } |
252b5132 RH |
4544 | |
4545 | exp->X_add_number = value; | |
4546 | exp->X_op = O_constant; | |
4547 | exp->X_unsigned = 1; | |
956a6ba3 | 4548 | exp->X_extrabit = 0; |
041ff4dd NC |
4549 | } |
4550 | } | |
252b5132 RH |
4551 | |
4552 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4553 | \f | |
4554 | /* Handle an MRI style string expression. */ | |
4555 | ||
abd63a32 | 4556 | #ifdef TC_M68K |
252b5132 RH |
4557 | static void |
4558 | parse_mri_cons (exp, nbytes) | |
4559 | expressionS *exp; | |
4560 | unsigned int nbytes; | |
4561 | { | |
4562 | if (*input_line_pointer != '\'' | |
4563 | && (input_line_pointer[1] != '\'' | |
4564 | || (*input_line_pointer != 'A' | |
4565 | && *input_line_pointer != 'E'))) | |
4566 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
4567 | else | |
4568 | { | |
4569 | unsigned int scan; | |
4570 | unsigned int result = 0; | |
4571 | ||
4572 | /* An MRI style string. Cut into as many bytes as will fit into | |
4573 | a nbyte chunk, left justify if necessary, and separate with | |
4574 | commas so we can try again later. */ | |
4575 | if (*input_line_pointer == 'A') | |
4576 | ++input_line_pointer; | |
4577 | else if (*input_line_pointer == 'E') | |
4578 | { | |
4579 | as_bad (_("EBCDIC constants are not supported")); | |
4580 | ++input_line_pointer; | |
4581 | } | |
4582 | ||
4583 | input_line_pointer++; | |
4584 | for (scan = 0; scan < nbytes; scan++) | |
4585 | { | |
4586 | if (*input_line_pointer == '\'') | |
4587 | { | |
4588 | if (input_line_pointer[1] == '\'') | |
4589 | { | |
4590 | input_line_pointer++; | |
4591 | } | |
4592 | else | |
4593 | break; | |
4594 | } | |
4595 | result = (result << 8) | (*input_line_pointer++); | |
4596 | } | |
4597 | ||
041ff4dd | 4598 | /* Left justify. */ |
252b5132 RH |
4599 | while (scan < nbytes) |
4600 | { | |
4601 | result <<= 8; | |
4602 | scan++; | |
4603 | } | |
f0e652b4 | 4604 | |
041ff4dd | 4605 | /* Create correct expression. */ |
252b5132 RH |
4606 | exp->X_op = O_constant; |
4607 | exp->X_add_number = result; | |
f0e652b4 | 4608 | |
041ff4dd | 4609 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4610 | if (input_line_pointer[0] != '\'' || |
4611 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4612 | { | |
4613 | input_line_pointer -= 2; | |
4614 | input_line_pointer[0] = ','; | |
4615 | input_line_pointer[1] = '\''; | |
4616 | } | |
4617 | else | |
4618 | input_line_pointer++; | |
4619 | } | |
4620 | } | |
abd63a32 | 4621 | #endif /* TC_M68K */ |
252b5132 RH |
4622 | \f |
4623 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4624 | ||
4625 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4626 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4627 | object file COUNT times. | |
4628 | ||
4629 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4630 | ||
4631 | static void | |
4632 | parse_repeat_cons (exp, nbytes) | |
4633 | expressionS *exp; | |
4634 | unsigned int nbytes; | |
4635 | { | |
4636 | expressionS count; | |
3d540e93 | 4637 | int i; |
252b5132 RH |
4638 | |
4639 | expression (exp); | |
4640 | ||
4641 | if (*input_line_pointer != ':') | |
4642 | { | |
4643 | /* No repeat count. */ | |
4644 | return; | |
4645 | } | |
4646 | ||
4647 | ++input_line_pointer; | |
4648 | expression (&count); | |
4649 | if (count.X_op != O_constant | |
4650 | || count.X_add_number <= 0) | |
4651 | { | |
0e389e77 | 4652 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4653 | return; |
4654 | } | |
4655 | ||
4656 | /* The cons function is going to output this expression once. So we | |
4657 | output it count - 1 times. */ | |
4658 | for (i = count.X_add_number - 1; i > 0; i--) | |
4659 | emit_expr (exp, nbytes); | |
4660 | } | |
4661 | ||
4662 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4663 | \f | |
4664 | /* Parse a floating point number represented as a hex constant. This | |
4665 | permits users to specify the exact bits they want in the floating | |
4666 | point number. */ | |
4667 | ||
4668 | static int | |
39e6acbd | 4669 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4670 | { |
4671 | int length; | |
4672 | int i; | |
4673 | ||
4674 | switch (float_type) | |
4675 | { | |
4676 | case 'f': | |
4677 | case 'F': | |
4678 | case 's': | |
4679 | case 'S': | |
4680 | length = 4; | |
4681 | break; | |
4682 | ||
4683 | case 'd': | |
4684 | case 'D': | |
4685 | case 'r': | |
4686 | case 'R': | |
4687 | length = 8; | |
4688 | break; | |
4689 | ||
4690 | case 'x': | |
4691 | case 'X': | |
4692 | length = 12; | |
4693 | break; | |
4694 | ||
4695 | case 'p': | |
4696 | case 'P': | |
4697 | length = 12; | |
4698 | break; | |
4699 | ||
4700 | default: | |
0e389e77 | 4701 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4702 | return -1; |
4703 | } | |
4704 | ||
4705 | /* It would be nice if we could go through expression to parse the | |
4706 | hex constant, but if we get a bignum it's a pain to sort it into | |
4707 | the buffer correctly. */ | |
4708 | i = 0; | |
4709 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4710 | { | |
4711 | int d; | |
4712 | ||
4713 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4714 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4715 | if (*input_line_pointer == '_') |
4716 | { | |
4717 | ++input_line_pointer; | |
4718 | continue; | |
4719 | } | |
4720 | ||
4721 | if (i >= length) | |
4722 | { | |
0e389e77 | 4723 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4724 | return -1; |
4725 | } | |
4726 | d = hex_value (*input_line_pointer) << 4; | |
4727 | ++input_line_pointer; | |
4728 | while (*input_line_pointer == '_') | |
4729 | ++input_line_pointer; | |
4730 | if (hex_p (*input_line_pointer)) | |
4731 | { | |
4732 | d += hex_value (*input_line_pointer); | |
4733 | ++input_line_pointer; | |
4734 | } | |
4735 | if (target_big_endian) | |
4736 | bytes[i] = d; | |
4737 | else | |
4738 | bytes[length - i - 1] = d; | |
4739 | ++i; | |
4740 | } | |
4741 | ||
4742 | if (i < length) | |
4743 | { | |
4744 | if (target_big_endian) | |
4745 | memset (bytes + i, 0, length - i); | |
4746 | else | |
4747 | memset (bytes, 0, length - i); | |
4748 | } | |
4749 | ||
4750 | return length; | |
4751 | } | |
4752 | ||
d6415f6c | 4753 | /* float_cons() |
f0e652b4 | 4754 | |
041ff4dd NC |
4755 | CONStruct some more frag chars of .floats .ffloats etc. |
4756 | Makes 0 or more new frags. | |
4757 | If need_pass_2 == 1, no frags are emitted. | |
4758 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4759 | |
041ff4dd NC |
4760 | A floating constant is defined by atof_generic(), except it is preceded |
4761 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4762 | reading, I decided to be incompatible. This always tries to give you | |
4763 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4764 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4765 | a choice of 2 flavours of noise according to which of 2 floating-point |
4766 | scanners you directed AS to use. | |
f0e652b4 | 4767 | |
041ff4dd | 4768 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4769 | |
4770 | void | |
39e6acbd | 4771 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4772 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4773 | { |
3d540e93 | 4774 | char *p; |
041ff4dd | 4775 | int length; /* Number of chars in an object. */ |
3d540e93 | 4776 | char *err; /* Error from scanning floating literal. */ |
252b5132 RH |
4777 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4778 | ||
4779 | if (is_it_end_of_statement ()) | |
4780 | { | |
4781 | demand_empty_rest_of_line (); | |
4782 | return; | |
4783 | } | |
4784 | ||
4785 | #ifdef md_flush_pending_output | |
4786 | md_flush_pending_output (); | |
4787 | #endif | |
4788 | ||
cc3f603a JM |
4789 | #ifdef md_cons_align |
4790 | md_cons_align (1); | |
4791 | #endif | |
4792 | ||
252b5132 RH |
4793 | do |
4794 | { | |
041ff4dd | 4795 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4796 | SKIP_WHITESPACE (); |
4797 | ||
4798 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4799 | letter is legal. Someone may invent a "z" format and this routine |
4800 | has no use for such information. Lusers beware: you get | |
4801 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4802 | if (input_line_pointer[0] == '0' |
3882b010 | 4803 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4804 | input_line_pointer += 2; |
4805 | ||
4806 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4807 | point with the exact digits specified. */ |
252b5132 RH |
4808 | if (input_line_pointer[0] == ':') |
4809 | { | |
4810 | ++input_line_pointer; | |
4811 | length = hex_float (float_type, temp); | |
4812 | if (length < 0) | |
4813 | { | |
4814 | ignore_rest_of_line (); | |
4815 | return; | |
4816 | } | |
4817 | } | |
4818 | else | |
4819 | { | |
4820 | err = md_atof (float_type, temp, &length); | |
4821 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4822 | know (err != NULL || length > 0); |
252b5132 RH |
4823 | if (err) |
4824 | { | |
0e389e77 | 4825 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4826 | ignore_rest_of_line (); |
4827 | return; | |
4828 | } | |
4829 | } | |
4830 | ||
4831 | if (!need_pass_2) | |
4832 | { | |
4833 | int count; | |
4834 | ||
4835 | count = 1; | |
4836 | ||
4837 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4838 | if (*input_line_pointer == ':') | |
4839 | { | |
4840 | expressionS count_exp; | |
4841 | ||
4842 | ++input_line_pointer; | |
4843 | expression (&count_exp); | |
f0e652b4 | 4844 | |
252b5132 RH |
4845 | if (count_exp.X_op != O_constant |
4846 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4847 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4848 | else |
4849 | count = count_exp.X_add_number; | |
4850 | } | |
4851 | #endif | |
4852 | ||
4853 | while (--count >= 0) | |
4854 | { | |
4855 | p = frag_more (length); | |
4856 | memcpy (p, temp, (unsigned int) length); | |
4857 | } | |
4858 | } | |
4859 | SKIP_WHITESPACE (); | |
4860 | } | |
4861 | while (*input_line_pointer++ == ','); | |
4862 | ||
041ff4dd NC |
4863 | /* Put terminator back into stream. */ |
4864 | --input_line_pointer; | |
252b5132 | 4865 | demand_empty_rest_of_line (); |
041ff4dd | 4866 | } |
252b5132 | 4867 | \f |
041ff4dd | 4868 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4869 | |
4870 | static inline int | |
39e6acbd | 4871 | sizeof_sleb128 (offsetT value) |
252b5132 | 4872 | { |
3d540e93 NC |
4873 | int size = 0; |
4874 | unsigned byte; | |
252b5132 RH |
4875 | |
4876 | do | |
4877 | { | |
4878 | byte = (value & 0x7f); | |
4879 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4880 | Fortunately, we can structure things so that the extra work reduces | |
4881 | to a noop on systems that do things "properly". */ | |
4882 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4883 | size += 1; | |
4884 | } | |
4885 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4886 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4887 | ||
4888 | return size; | |
4889 | } | |
4890 | ||
4891 | static inline int | |
39e6acbd | 4892 | sizeof_uleb128 (valueT value) |
252b5132 | 4893 | { |
3d540e93 | 4894 | int size = 0; |
252b5132 RH |
4895 | |
4896 | do | |
4897 | { | |
252b5132 RH |
4898 | value >>= 7; |
4899 | size += 1; | |
4900 | } | |
4901 | while (value != 0); | |
4902 | ||
4903 | return size; | |
4904 | } | |
4905 | ||
4906 | int | |
39e6acbd | 4907 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4908 | { |
4909 | if (sign) | |
4910 | return sizeof_sleb128 ((offsetT) value); | |
4911 | else | |
4912 | return sizeof_uleb128 (value); | |
4913 | } | |
4914 | ||
4915 | /* Output a LEB128 value. */ | |
4916 | ||
4917 | static inline int | |
39e6acbd | 4918 | output_sleb128 (char *p, offsetT value) |
252b5132 | 4919 | { |
3d540e93 NC |
4920 | char *orig = p; |
4921 | int more; | |
252b5132 RH |
4922 | |
4923 | do | |
4924 | { | |
4925 | unsigned byte = (value & 0x7f); | |
4926 | ||
4927 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4928 | Fortunately, we can structure things so that the extra work reduces | |
4929 | to a noop on systems that do things "properly". */ | |
4930 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4931 | ||
4932 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4933 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4934 | if (more) | |
4935 | byte |= 0x80; | |
4936 | ||
4937 | *p++ = byte; | |
4938 | } | |
4939 | while (more); | |
4940 | ||
4941 | return p - orig; | |
4942 | } | |
4943 | ||
4944 | static inline int | |
39e6acbd | 4945 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4946 | { |
4947 | char *orig = p; | |
4948 | ||
4949 | do | |
4950 | { | |
4951 | unsigned byte = (value & 0x7f); | |
4952 | value >>= 7; | |
4953 | if (value != 0) | |
4954 | /* More bytes to follow. */ | |
4955 | byte |= 0x80; | |
4956 | ||
4957 | *p++ = byte; | |
4958 | } | |
4959 | while (value != 0); | |
4960 | ||
4961 | return p - orig; | |
4962 | } | |
4963 | ||
4964 | int | |
39e6acbd | 4965 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4966 | { |
4967 | if (sign) | |
4968 | return output_sleb128 (p, (offsetT) value); | |
4969 | else | |
4970 | return output_uleb128 (p, value); | |
4971 | } | |
4972 | ||
4973 | /* Do the same for bignums. We combine sizeof with output here in that | |
4974 | we don't output for NULL values of P. It isn't really as critical as | |
4975 | for "normal" values that this be streamlined. */ | |
4976 | ||
6d4d30bb | 4977 | static inline int |
39e6acbd | 4978 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4979 | { |
4980 | char *orig = p; | |
4981 | valueT val = 0; | |
4982 | int loaded = 0; | |
4983 | unsigned byte; | |
4984 | ||
4985 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4986 | while (size > 1 |
4987 | && bignum[size - 1] == LITTLENUM_MASK | |
4988 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4989 | size--; |
4990 | ||
4991 | do | |
4992 | { | |
e5604d79 RS |
4993 | /* OR in the next part of the littlenum. */ |
4994 | val |= (*bignum << loaded); | |
4995 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4996 | size--; | |
4997 | bignum++; | |
4998 | ||
4999 | /* Add bytes until there are less than 7 bits left in VAL | |
5000 | or until every non-sign bit has been written. */ | |
5001 | do | |
252b5132 | 5002 | { |
e5604d79 RS |
5003 | byte = val & 0x7f; |
5004 | loaded -= 7; | |
5005 | val >>= 7; | |
5006 | if (size > 0 | |
5007 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 5008 | byte |= 0x80; |
e5604d79 RS |
5009 | |
5010 | if (orig) | |
5011 | *p = byte; | |
5012 | p++; | |
252b5132 | 5013 | } |
e5604d79 RS |
5014 | while ((byte & 0x80) != 0 && loaded >= 7); |
5015 | } | |
5016 | while (size > 0); | |
252b5132 | 5017 | |
e5604d79 RS |
5018 | /* Mop up any left-over bits (of which there will be less than 7). */ |
5019 | if ((byte & 0x80) != 0) | |
5020 | { | |
5021 | /* Sign-extend VAL. */ | |
5022 | if (val & (1 << (loaded - 1))) | |
5023 | val |= ~0 << loaded; | |
252b5132 | 5024 | if (orig) |
e5604d79 | 5025 | *p = val & 0x7f; |
252b5132 RH |
5026 | p++; |
5027 | } | |
252b5132 RH |
5028 | |
5029 | return p - orig; | |
5030 | } | |
5031 | ||
6d4d30bb | 5032 | static inline int |
39e6acbd | 5033 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
5034 | { |
5035 | char *orig = p; | |
5036 | valueT val = 0; | |
5037 | int loaded = 0; | |
5038 | unsigned byte; | |
5039 | ||
5040 | /* Strip leading zeros off the bignum. */ | |
5041 | /* XXX: Is this needed? */ | |
041ff4dd | 5042 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
5043 | size--; |
5044 | ||
5045 | do | |
5046 | { | |
5047 | if (loaded < 7 && size > 0) | |
5048 | { | |
5049 | val |= (*bignum << loaded); | |
5050 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5051 | size--; | |
5052 | bignum++; | |
5053 | } | |
5054 | ||
5055 | byte = val & 0x7f; | |
5056 | loaded -= 7; | |
5057 | val >>= 7; | |
5058 | ||
5059 | if (size > 0 || val) | |
5060 | byte |= 0x80; | |
5061 | ||
5062 | if (orig) | |
5063 | *p = byte; | |
5064 | p++; | |
5065 | } | |
5066 | while (byte & 0x80); | |
5067 | ||
5068 | return p - orig; | |
5069 | } | |
5070 | ||
6d4d30bb | 5071 | static int |
39e6acbd | 5072 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
5073 | { |
5074 | if (sign) | |
5075 | return output_big_sleb128 (p, bignum, size); | |
5076 | else | |
5077 | return output_big_uleb128 (p, bignum, size); | |
5078 | } | |
5079 | ||
5080 | /* Generate the appropriate fragments for a given expression to emit a | |
5081 | leb128 value. */ | |
5082 | ||
87c245cc | 5083 | static void |
39e6acbd | 5084 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5085 | { |
5086 | operatorT op = exp->X_op; | |
b7712f8d | 5087 | unsigned int nbytes; |
252b5132 RH |
5088 | |
5089 | if (op == O_absent || op == O_illegal) | |
5090 | { | |
5091 | as_warn (_("zero assumed for missing expression")); | |
5092 | exp->X_add_number = 0; | |
5093 | op = O_constant; | |
5094 | } | |
5095 | else if (op == O_big && exp->X_add_number <= 0) | |
5096 | { | |
0e389e77 | 5097 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5098 | exp->X_add_number = 0; |
5099 | op = O_constant; | |
5100 | } | |
5101 | else if (op == O_register) | |
5102 | { | |
5103 | as_warn (_("register value used as expression")); | |
5104 | op = O_constant; | |
5105 | } | |
e5604d79 RS |
5106 | else if (op == O_constant |
5107 | && sign | |
956a6ba3 | 5108 | && (exp->X_add_number < 0) == !exp->X_extrabit) |
e5604d79 RS |
5109 | { |
5110 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5111 | doesn't reflect the sign of the original value. Convert EXP | |
5112 | to a correctly-extended bignum instead. */ | |
956a6ba3 | 5113 | convert_to_bignum (exp, exp->X_extrabit); |
e5604d79 RS |
5114 | op = O_big; |
5115 | } | |
252b5132 | 5116 | |
67a659f6 RH |
5117 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5118 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5119 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5120 | if (check_eh_frame (exp, &nbytes)) |
5121 | abort (); | |
5122 | ||
371b7465 RH |
5123 | /* Let the backend know that subsequent data may be byte aligned. */ |
5124 | #ifdef md_cons_align | |
5125 | md_cons_align (1); | |
5126 | #endif | |
5127 | ||
252b5132 RH |
5128 | if (op == O_constant) |
5129 | { | |
5130 | /* If we've got a constant, emit the thing directly right now. */ | |
5131 | ||
5132 | valueT value = exp->X_add_number; | |
5133 | int size; | |
5134 | char *p; | |
5135 | ||
5136 | size = sizeof_leb128 (value, sign); | |
5137 | p = frag_more (size); | |
5138 | output_leb128 (p, value, sign); | |
5139 | } | |
5140 | else if (op == O_big) | |
5141 | { | |
5142 | /* O_big is a different sort of constant. */ | |
5143 | ||
5144 | int size; | |
5145 | char *p; | |
5146 | ||
5147 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
5148 | p = frag_more (size); | |
5149 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
5150 | } | |
5151 | else | |
5152 | { | |
041ff4dd | 5153 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5154 | resolve things later. */ |
5155 | ||
041ff4dd | 5156 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5157 | make_expr_symbol (exp), 0, (char *) NULL); |
5158 | } | |
5159 | } | |
5160 | ||
5161 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5162 | ||
5163 | void | |
39e6acbd | 5164 | s_leb128 (int sign) |
252b5132 RH |
5165 | { |
5166 | expressionS exp; | |
5167 | ||
00bbdfe7 BW |
5168 | #ifdef md_flush_pending_output |
5169 | md_flush_pending_output (); | |
5170 | #endif | |
5171 | ||
041ff4dd NC |
5172 | do |
5173 | { | |
5174 | expression (&exp); | |
5175 | emit_leb128_expr (&exp, sign); | |
5176 | } | |
5177 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5178 | |
5179 | input_line_pointer--; | |
5180 | demand_empty_rest_of_line (); | |
5181 | } | |
5182 | \f | |
38a57ae7 NC |
5183 | static void |
5184 | stringer_append_char (int c, int bitsize) | |
5185 | { | |
5186 | if (!target_big_endian) | |
5187 | FRAG_APPEND_1_CHAR (c); | |
5188 | ||
5189 | switch (bitsize) | |
5190 | { | |
5191 | case 64: | |
5192 | FRAG_APPEND_1_CHAR (0); | |
5193 | FRAG_APPEND_1_CHAR (0); | |
5194 | FRAG_APPEND_1_CHAR (0); | |
5195 | FRAG_APPEND_1_CHAR (0); | |
5196 | /* Fall through. */ | |
5197 | case 32: | |
5198 | FRAG_APPEND_1_CHAR (0); | |
5199 | FRAG_APPEND_1_CHAR (0); | |
5200 | /* Fall through. */ | |
5201 | case 16: | |
5202 | FRAG_APPEND_1_CHAR (0); | |
5203 | /* Fall through. */ | |
5204 | case 8: | |
5205 | break; | |
5206 | default: | |
5207 | /* Called with invalid bitsize argument. */ | |
5208 | abort (); | |
5209 | break; | |
5210 | } | |
5211 | if (target_big_endian) | |
5212 | FRAG_APPEND_1_CHAR (c); | |
5213 | } | |
5214 | ||
5215 | /* Worker to do .ascii etc statements. | |
5216 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5217 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5218 | check it. |
5219 | Checks for end-of-line. | |
5220 | BITS_APPENDZERO says how many bits are in a target char. | |
5221 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5222 | |
5223 | void | |
38a57ae7 | 5224 | stringer (int bits_appendzero) |
252b5132 | 5225 | { |
38a57ae7 NC |
5226 | const int bitsize = bits_appendzero & ~7; |
5227 | const int append_zero = bits_appendzero & 1; | |
5228 | unsigned int c; | |
87975d2a | 5229 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5230 | char *start; |
87975d2a | 5231 | #endif |
252b5132 RH |
5232 | |
5233 | #ifdef md_flush_pending_output | |
5234 | md_flush_pending_output (); | |
5235 | #endif | |
5236 | ||
cc3f603a JM |
5237 | #ifdef md_cons_align |
5238 | md_cons_align (1); | |
5239 | #endif | |
5240 | ||
041ff4dd NC |
5241 | /* The following awkward logic is to parse ZERO or more strings, |
5242 | comma separated. Recall a string expression includes spaces | |
5243 | before the opening '\"' and spaces after the closing '\"'. | |
5244 | We fake a leading ',' if there is (supposed to be) | |
5245 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5246 | if (is_it_end_of_statement ()) |
5247 | { | |
041ff4dd NC |
5248 | c = 0; /* Skip loop. */ |
5249 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5250 | } |
5251 | else | |
5252 | { | |
041ff4dd | 5253 | c = ','; /* Do loop. */ |
252b5132 | 5254 | } |
8ac9ba6c NC |
5255 | /* If we have been switched into the abs_section then we |
5256 | will not have an obstack onto which we can hang strings. */ | |
5257 | if (now_seg == absolute_section) | |
5258 | { | |
5259 | as_bad (_("strings must be placed into a section")); | |
5260 | c = 0; | |
5261 | ignore_rest_of_line (); | |
5262 | } | |
d6415f6c | 5263 | |
252b5132 RH |
5264 | while (c == ',' || c == '<' || c == '"') |
5265 | { | |
5266 | SKIP_WHITESPACE (); | |
5267 | switch (*input_line_pointer) | |
5268 | { | |
5269 | case '\"': | |
041ff4dd | 5270 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5271 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5272 | start = input_line_pointer; |
87975d2a | 5273 | #endif |
38a57ae7 | 5274 | |
252b5132 | 5275 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5276 | stringer_append_char (c, bitsize); |
5277 | ||
252b5132 | 5278 | if (append_zero) |
38a57ae7 NC |
5279 | stringer_append_char (0, bitsize); |
5280 | ||
252b5132 RH |
5281 | know (input_line_pointer[-1] == '\"'); |
5282 | ||
87975d2a | 5283 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5284 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5285 | will emit .string with a filename in the .debug section |
5286 | after a sequence of constants. See the comment in | |
5287 | emit_expr for the sequence. emit_expr will set | |
5288 | dwarf_file_string to non-zero if this string might be a | |
5289 | source file name. */ | |
252b5132 RH |
5290 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5291 | dwarf_file_string = 0; | |
5292 | else if (dwarf_file_string) | |
5293 | { | |
5294 | c = input_line_pointer[-1]; | |
5295 | input_line_pointer[-1] = '\0'; | |
5296 | listing_source_file (start); | |
5297 | input_line_pointer[-1] = c; | |
5298 | } | |
252b5132 RH |
5299 | #endif |
5300 | ||
5301 | break; | |
5302 | case '<': | |
5303 | input_line_pointer++; | |
5304 | c = get_single_number (); | |
38a57ae7 | 5305 | stringer_append_char (c, bitsize); |
252b5132 | 5306 | if (*input_line_pointer != '>') |
38a57ae7 NC |
5307 | as_bad (_("expected <nn>")); |
5308 | ||
252b5132 RH |
5309 | input_line_pointer++; |
5310 | break; | |
5311 | case ',': | |
5312 | input_line_pointer++; | |
5313 | break; | |
5314 | } | |
5315 | SKIP_WHITESPACE (); | |
5316 | c = *input_line_pointer; | |
5317 | } | |
5318 | ||
5319 | demand_empty_rest_of_line (); | |
38a57ae7 | 5320 | } |
252b5132 RH |
5321 | \f |
5322 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5323 | high bits set. We'll probably also have trouble with | |
5324 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5325 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5326 | |
041ff4dd | 5327 | unsigned int |
39e6acbd | 5328 | next_char_of_string (void) |
252b5132 | 5329 | { |
3d540e93 | 5330 | unsigned int c; |
252b5132 RH |
5331 | |
5332 | c = *input_line_pointer++ & CHAR_MASK; | |
5333 | switch (c) | |
5334 | { | |
5335 | case '\"': | |
5336 | c = NOT_A_CHAR; | |
5337 | break; | |
5338 | ||
5339 | case '\n': | |
0e389e77 | 5340 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5341 | bump_line_counters (); |
5342 | break; | |
5343 | ||
5344 | #ifndef NO_STRING_ESCAPES | |
5345 | case '\\': | |
5346 | switch (c = *input_line_pointer++) | |
5347 | { | |
5348 | case 'b': | |
5349 | c = '\b'; | |
5350 | break; | |
5351 | ||
5352 | case 'f': | |
5353 | c = '\f'; | |
5354 | break; | |
5355 | ||
5356 | case 'n': | |
5357 | c = '\n'; | |
5358 | break; | |
5359 | ||
5360 | case 'r': | |
5361 | c = '\r'; | |
5362 | break; | |
5363 | ||
5364 | case 't': | |
5365 | c = '\t'; | |
5366 | break; | |
5367 | ||
5368 | case 'v': | |
5369 | c = '\013'; | |
5370 | break; | |
5371 | ||
5372 | case '\\': | |
5373 | case '"': | |
041ff4dd | 5374 | break; /* As itself. */ |
252b5132 RH |
5375 | |
5376 | case '0': | |
5377 | case '1': | |
5378 | case '2': | |
5379 | case '3': | |
5380 | case '4': | |
5381 | case '5': | |
5382 | case '6': | |
5383 | case '7': | |
5384 | case '8': | |
5385 | case '9': | |
5386 | { | |
5387 | long number; | |
5388 | int i; | |
5389 | ||
041ff4dd | 5390 | for (i = 0, number = 0; |
3882b010 | 5391 | ISDIGIT (c) && i < 3; |
041ff4dd | 5392 | c = *input_line_pointer++, i++) |
252b5132 RH |
5393 | { |
5394 | number = number * 8 + c - '0'; | |
5395 | } | |
f0e652b4 | 5396 | |
252b5132 RH |
5397 | c = number & 0xff; |
5398 | } | |
5399 | --input_line_pointer; | |
5400 | break; | |
5401 | ||
5402 | case 'x': | |
5403 | case 'X': | |
5404 | { | |
5405 | long number; | |
5406 | ||
5407 | number = 0; | |
5408 | c = *input_line_pointer++; | |
3882b010 | 5409 | while (ISXDIGIT (c)) |
252b5132 | 5410 | { |
3882b010 | 5411 | if (ISDIGIT (c)) |
252b5132 | 5412 | number = number * 16 + c - '0'; |
3882b010 | 5413 | else if (ISUPPER (c)) |
252b5132 RH |
5414 | number = number * 16 + c - 'A' + 10; |
5415 | else | |
5416 | number = number * 16 + c - 'a' + 10; | |
5417 | c = *input_line_pointer++; | |
5418 | } | |
5419 | c = number & 0xff; | |
5420 | --input_line_pointer; | |
5421 | } | |
5422 | break; | |
5423 | ||
5424 | case '\n': | |
041ff4dd | 5425 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5426 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5427 | c = '\n'; |
5428 | bump_line_counters (); | |
5429 | break; | |
5430 | ||
5431 | default: | |
5432 | ||
5433 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5434 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5435 | c = '?'; |
5436 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5437 | ||
5438 | break; | |
041ff4dd | 5439 | } |
252b5132 RH |
5440 | break; |
5441 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
5442 | ||
5443 | default: | |
5444 | break; | |
041ff4dd | 5445 | } |
252b5132 | 5446 | return (c); |
041ff4dd | 5447 | } |
252b5132 RH |
5448 | \f |
5449 | static segT | |
3d540e93 | 5450 | get_segmented_expression (expressionS *expP) |
252b5132 | 5451 | { |
3d540e93 | 5452 | segT retval; |
252b5132 RH |
5453 | |
5454 | retval = expression (expP); | |
5455 | if (expP->X_op == O_illegal | |
5456 | || expP->X_op == O_absent | |
5457 | || expP->X_op == O_big) | |
5458 | { | |
0e389e77 | 5459 | as_bad (_("expected address expression")); |
252b5132 RH |
5460 | expP->X_op = O_constant; |
5461 | expP->X_add_number = 0; | |
5462 | retval = absolute_section; | |
5463 | } | |
5464 | return retval; | |
5465 | } | |
5466 | ||
041ff4dd | 5467 | static segT |
3d540e93 | 5468 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5469 | { |
259af69e | 5470 | segT retval = get_segmented_expression (expP); |
252b5132 | 5471 | |
259af69e | 5472 | if (retval == undefined_section) |
252b5132 RH |
5473 | { |
5474 | /* There is no easy way to extract the undefined symbol from the | |
5475 | expression. */ | |
5476 | if (expP->X_add_symbol != NULL | |
5477 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5478 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5479 | S_GET_NAME (expP->X_add_symbol)); | |
5480 | else | |
5481 | as_warn (_("some symbol undefined; zero assumed")); | |
5482 | retval = absolute_section; | |
5483 | expP->X_op = O_constant; | |
5484 | expP->X_add_number = 0; | |
5485 | } | |
259af69e | 5486 | return retval; |
041ff4dd | 5487 | } |
252b5132 | 5488 | |
041ff4dd | 5489 | char /* Return terminator. */ |
39e6acbd | 5490 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5491 | { |
5492 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5493 | *val_pointer = (long) get_absolute_expression (); | |
5494 | return (*input_line_pointer++); | |
5495 | } | |
5496 | \f | |
041ff4dd NC |
5497 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5498 | Give a warning if that happens. */ | |
5499 | ||
252b5132 | 5500 | char * |
39e6acbd | 5501 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5502 | { |
3d540e93 | 5503 | char *s; |
252b5132 RH |
5504 | |
5505 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5506 | { | |
3d540e93 | 5507 | int len; |
252b5132 RH |
5508 | |
5509 | for (len = *len_pointer; len > 0; len--) | |
5510 | { | |
5511 | if (*s == 0) | |
5512 | { | |
5513 | s = 0; | |
5514 | len = 1; | |
5515 | *len_pointer = 0; | |
0e389e77 | 5516 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5517 | } |
5518 | } | |
5519 | } | |
f0e652b4 | 5520 | |
252b5132 RH |
5521 | return s; |
5522 | } | |
5523 | \f | |
041ff4dd NC |
5524 | /* Demand string, but return a safe (=private) copy of the string. |
5525 | Return NULL if we can't read a string here. */ | |
5526 | ||
252b5132 | 5527 | char * |
39e6acbd | 5528 | demand_copy_string (int *lenP) |
252b5132 | 5529 | { |
3d540e93 NC |
5530 | unsigned int c; |
5531 | int len; | |
252b5132 RH |
5532 | char *retval; |
5533 | ||
5534 | len = 0; | |
5535 | SKIP_WHITESPACE (); | |
5536 | if (*input_line_pointer == '\"') | |
5537 | { | |
041ff4dd | 5538 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5539 | |
5540 | while (is_a_char (c = next_char_of_string ())) | |
5541 | { | |
5542 | obstack_1grow (¬es, c); | |
5543 | len++; | |
5544 | } | |
5545 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5546 | null terminated string. */ |
252b5132 | 5547 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5548 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5549 | } |
5550 | else | |
5551 | { | |
c95b35a9 | 5552 | as_bad (_("missing string")); |
252b5132 RH |
5553 | retval = NULL; |
5554 | ignore_rest_of_line (); | |
5555 | } | |
5556 | *lenP = len; | |
5557 | return (retval); | |
041ff4dd | 5558 | } |
252b5132 | 5559 | \f |
041ff4dd | 5560 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5561 | |
041ff4dd | 5562 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5563 | |
041ff4dd NC |
5564 | Out: 1 if input_line_pointer->end-of-line. */ |
5565 | ||
5566 | int | |
39e6acbd | 5567 | is_it_end_of_statement (void) |
252b5132 RH |
5568 | { |
5569 | SKIP_WHITESPACE (); | |
5570 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5571 | } |
252b5132 | 5572 | |
041ff4dd | 5573 | void |
39e6acbd | 5574 | equals (char *sym_name, int reassign) |
252b5132 | 5575 | { |
252b5132 | 5576 | char *stop = NULL; |
fb25138b | 5577 | char stopc = 0; |
252b5132 RH |
5578 | |
5579 | input_line_pointer++; | |
5580 | if (*input_line_pointer == '=') | |
5581 | input_line_pointer++; | |
9497f5ac NC |
5582 | if (reassign < 0 && *input_line_pointer == '=') |
5583 | input_line_pointer++; | |
252b5132 RH |
5584 | |
5585 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5586 | input_line_pointer++; | |
5587 | ||
5588 | if (flag_mri) | |
5589 | stop = mri_comment_field (&stopc); | |
5590 | ||
9497f5ac | 5591 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5592 | |
5593 | if (flag_mri) | |
31d20a21 AM |
5594 | { |
5595 | demand_empty_rest_of_line (); | |
5596 | mri_comment_end (stop, stopc); | |
5597 | } | |
041ff4dd | 5598 | } |
252b5132 | 5599 | |
7e005732 NC |
5600 | /* .incbin -- include a file verbatim at the current location. */ |
5601 | ||
5602 | void | |
39e6acbd | 5603 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5604 | { |
5605 | FILE * binfile; | |
5606 | char * path; | |
5607 | char * filename; | |
5608 | char * binfrag; | |
5609 | long skip = 0; | |
5610 | long count = 0; | |
5611 | long bytes; | |
5612 | int len; | |
5613 | ||
5614 | #ifdef md_flush_pending_output | |
5615 | md_flush_pending_output (); | |
5616 | #endif | |
5617 | ||
cc3f603a JM |
5618 | #ifdef md_cons_align |
5619 | md_cons_align (1); | |
5620 | #endif | |
5621 | ||
7e005732 NC |
5622 | SKIP_WHITESPACE (); |
5623 | filename = demand_copy_string (& len); | |
5624 | if (filename == NULL) | |
5625 | return; | |
5626 | ||
5627 | SKIP_WHITESPACE (); | |
5628 | ||
5629 | /* Look for optional skip and count. */ | |
5630 | if (* input_line_pointer == ',') | |
5631 | { | |
5632 | ++ input_line_pointer; | |
5633 | skip = get_absolute_expression (); | |
5634 | ||
5635 | SKIP_WHITESPACE (); | |
5636 | ||
5637 | if (* input_line_pointer == ',') | |
5638 | { | |
5639 | ++ input_line_pointer; | |
5640 | ||
5641 | count = get_absolute_expression (); | |
5642 | if (count == 0) | |
5643 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5644 | ||
5645 | SKIP_WHITESPACE (); | |
5646 | } | |
5647 | } | |
5648 | ||
5649 | demand_empty_rest_of_line (); | |
5650 | ||
5651 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5652 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5653 | if (binfile == NULL) |
5654 | { | |
5655 | int i; | |
5656 | ||
1e9cc1c2 | 5657 | path = (char *) xmalloc ((unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5658 | |
5659 | for (i = 0; i < include_dir_count; i++) | |
5660 | { | |
5661 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5662 | ||
f740e790 | 5663 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5664 | if (binfile != NULL) |
5665 | break; | |
5666 | } | |
5667 | ||
5668 | if (binfile == NULL) | |
5669 | as_bad (_("file not found: %s"), filename); | |
5670 | } | |
5671 | else | |
5672 | path = xstrdup (filename); | |
5673 | ||
5674 | if (binfile) | |
5675 | { | |
f740e790 NC |
5676 | long file_len; |
5677 | ||
7e005732 NC |
5678 | register_dependency (path); |
5679 | ||
5680 | /* Compute the length of the file. */ | |
5681 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5682 | { | |
5683 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5684 | goto done; | |
5685 | } | |
f740e790 | 5686 | file_len = ftell (binfile); |
7e005732 | 5687 | |
c556cc9c | 5688 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5689 | if (count == 0) |
c556cc9c | 5690 | count = file_len - skip; |
7e005732 | 5691 | |
c556cc9c | 5692 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5693 | { |
c556cc9c | 5694 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5695 | skip, count, file_len); |
7e005732 NC |
5696 | goto done; |
5697 | } | |
5698 | ||
5699 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5700 | { | |
5701 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5702 | goto done; | |
5703 | } | |
5704 | ||
5705 | /* Allocate frag space and store file contents in it. */ | |
5706 | binfrag = frag_more (count); | |
5707 | ||
5708 | bytes = fread (binfrag, 1, count, binfile); | |
5709 | if (bytes < count) | |
5710 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5711 | path, bytes, count); | |
5712 | } | |
5713 | done: | |
5714 | if (binfile != NULL) | |
5715 | fclose (binfile); | |
5716 | if (path) | |
5717 | free (path); | |
5718 | } | |
5719 | ||
041ff4dd | 5720 | /* .include -- include a file at this point. */ |
252b5132 | 5721 | |
041ff4dd | 5722 | void |
39e6acbd | 5723 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5724 | { |
252b5132 RH |
5725 | char *filename; |
5726 | int i; | |
1e9cc1c2 | 5727 | FILE *try_file; |
252b5132 RH |
5728 | char *path; |
5729 | ||
041ff4dd | 5730 | if (!flag_m68k_mri) |
252b5132 RH |
5731 | { |
5732 | filename = demand_copy_string (&i); | |
5733 | if (filename == NULL) | |
5734 | { | |
5735 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5736 | called ignore_rest_of_line. */ |
252b5132 RH |
5737 | return; |
5738 | } | |
5739 | } | |
5740 | else | |
5741 | { | |
5742 | SKIP_WHITESPACE (); | |
5743 | i = 0; | |
041ff4dd | 5744 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5745 | && *input_line_pointer != ' ' |
5746 | && *input_line_pointer != '\t') | |
5747 | { | |
5748 | obstack_1grow (¬es, *input_line_pointer); | |
5749 | ++input_line_pointer; | |
5750 | ++i; | |
5751 | } | |
f0e652b4 | 5752 | |
252b5132 | 5753 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5754 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5755 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5756 | ++input_line_pointer; |
5757 | } | |
f0e652b4 | 5758 | |
252b5132 | 5759 | demand_empty_rest_of_line (); |
1e9cc1c2 | 5760 | path = (char *) xmalloc ((unsigned long) i |
fa94de6b | 5761 | + include_dir_maxlen + 5 /* slop */ ); |
f0e652b4 | 5762 | |
252b5132 RH |
5763 | for (i = 0; i < include_dir_count; i++) |
5764 | { | |
5765 | strcpy (path, include_dirs[i]); | |
5766 | strcat (path, "/"); | |
5767 | strcat (path, filename); | |
1e9cc1c2 | 5768 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 5769 | { |
1e9cc1c2 | 5770 | fclose (try_file); |
252b5132 RH |
5771 | goto gotit; |
5772 | } | |
5773 | } | |
f0e652b4 | 5774 | |
252b5132 RH |
5775 | free (path); |
5776 | path = filename; | |
5777 | gotit: | |
041ff4dd | 5778 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5779 | register_dependency (path); |
9f10757c | 5780 | input_scrub_insert_file (path); |
041ff4dd | 5781 | } |
252b5132 | 5782 | |
041ff4dd | 5783 | void |
39e6acbd | 5784 | add_include_dir (char *path) |
252b5132 RH |
5785 | { |
5786 | int i; | |
5787 | ||
5788 | if (include_dir_count == 0) | |
5789 | { | |
5790 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5791 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5792 | include_dir_count = 2; |
5793 | } | |
5794 | else | |
5795 | { | |
5796 | include_dir_count++; | |
041ff4dd | 5797 | include_dirs = |
b2e951ec NC |
5798 | (char **) xrealloc (include_dirs, |
5799 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5800 | } |
5801 | ||
041ff4dd | 5802 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5803 | |
5804 | i = strlen (path); | |
5805 | if (i > include_dir_maxlen) | |
5806 | include_dir_maxlen = i; | |
041ff4dd | 5807 | } |
252b5132 RH |
5808 | \f |
5809 | /* Output debugging information to denote the source file. */ | |
5810 | ||
5811 | static void | |
39e6acbd | 5812 | generate_file_debug (void) |
252b5132 RH |
5813 | { |
5814 | if (debug_type == DEBUG_STABS) | |
5815 | stabs_generate_asm_file (); | |
5816 | } | |
5817 | ||
5818 | /* Output line number debugging information for the current source line. */ | |
5819 | ||
5820 | void | |
39e6acbd | 5821 | generate_lineno_debug (void) |
252b5132 | 5822 | { |
252b5132 RH |
5823 | switch (debug_type) |
5824 | { | |
5825 | case DEBUG_UNSPECIFIED: | |
5826 | case DEBUG_NONE: | |
4dc7ead9 | 5827 | case DEBUG_DWARF: |
252b5132 RH |
5828 | break; |
5829 | case DEBUG_STABS: | |
5830 | stabs_generate_asm_lineno (); | |
5831 | break; | |
5832 | case DEBUG_ECOFF: | |
5833 | ecoff_generate_asm_lineno (); | |
5834 | break; | |
252b5132 | 5835 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5836 | /* ??? We could here indicate to dwarf2dbg.c that something |
5837 | has changed. However, since there is additional backend | |
5838 | support that is required (calling dwarf2_emit_insn), we | |
5839 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5840 | break; |
5841 | } | |
5842 | } | |
5843 | ||
5844 | /* Output debugging information to mark a function entry point or end point. | |
5845 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5846 | ||
5847 | void | |
39e6acbd | 5848 | s_func (int end_p) |
252b5132 RH |
5849 | { |
5850 | do_s_func (end_p, NULL); | |
5851 | } | |
5852 | ||
5853 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5854 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5855 | ||
87c245cc | 5856 | static void |
39e6acbd | 5857 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5858 | { |
5859 | /* Record the current function so that we can issue an error message for | |
5860 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5861 | arguments. */ | |
5862 | static char *current_name; | |
5863 | static char *current_label; | |
5864 | ||
5865 | if (end_p) | |
5866 | { | |
5867 | if (current_name == NULL) | |
5868 | { | |
5869 | as_bad (_("missing .func")); | |
5870 | ignore_rest_of_line (); | |
5871 | return; | |
5872 | } | |
5873 | ||
5874 | if (debug_type == DEBUG_STABS) | |
5875 | stabs_generate_asm_endfunc (current_name, current_label); | |
5876 | ||
5877 | current_name = current_label = NULL; | |
5878 | } | |
5879 | else /* ! end_p */ | |
5880 | { | |
041ff4dd NC |
5881 | char *name, *label; |
5882 | char delim1, delim2; | |
252b5132 RH |
5883 | |
5884 | if (current_name != NULL) | |
5885 | { | |
5886 | as_bad (_(".endfunc missing for previous .func")); | |
5887 | ignore_rest_of_line (); | |
5888 | return; | |
5889 | } | |
5890 | ||
5891 | name = input_line_pointer; | |
5892 | delim1 = get_symbol_end (); | |
5893 | name = xstrdup (name); | |
5894 | *input_line_pointer = delim1; | |
5895 | SKIP_WHITESPACE (); | |
5896 | if (*input_line_pointer != ',') | |
5897 | { | |
5898 | if (default_prefix) | |
05f4ab67 AM |
5899 | { |
5900 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
5901 | as_fatal ("%s", xstrerror (errno)); | |
5902 | } | |
252b5132 RH |
5903 | else |
5904 | { | |
7be1c489 | 5905 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
5906 | /* Missing entry point, use function's name with the leading |
5907 | char prepended. */ | |
5908 | if (leading_char) | |
05f4ab67 AM |
5909 | { |
5910 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
5911 | as_fatal ("%s", xstrerror (errno)); | |
5912 | } | |
252b5132 RH |
5913 | else |
5914 | label = name; | |
5915 | } | |
5916 | } | |
5917 | else | |
5918 | { | |
5919 | ++input_line_pointer; | |
5920 | SKIP_WHITESPACE (); | |
5921 | label = input_line_pointer; | |
5922 | delim2 = get_symbol_end (); | |
5923 | label = xstrdup (label); | |
5924 | *input_line_pointer = delim2; | |
5925 | } | |
5926 | ||
5927 | if (debug_type == DEBUG_STABS) | |
5928 | stabs_generate_asm_func (name, label); | |
5929 | ||
5930 | current_name = name; | |
5931 | current_label = label; | |
5932 | } | |
5933 | ||
5934 | demand_empty_rest_of_line (); | |
5935 | } | |
5936 | \f | |
fa94de6b RM |
5937 | #ifdef HANDLE_BUNDLE |
5938 | ||
5939 | void | |
5940 | s_bundle_align_mode (int arg ATTRIBUTE_UNUSED) | |
5941 | { | |
5942 | unsigned int align = get_absolute_expression (); | |
5943 | SKIP_WHITESPACE (); | |
5944 | demand_empty_rest_of_line (); | |
5945 | ||
5946 | if (align > (unsigned int) TC_ALIGN_LIMIT) | |
5947 | as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"), | |
5948 | (unsigned int) TC_ALIGN_LIMIT); | |
5949 | ||
5950 | if (bundle_lock_frag != NULL) | |
5951 | { | |
5952 | as_bad (_("cannot change .bundle_align_mode inside .bundle_lock")); | |
5953 | return; | |
5954 | } | |
5955 | ||
5956 | bundle_align_p2 = align; | |
5957 | } | |
5958 | ||
5959 | void | |
5960 | s_bundle_lock (int arg ATTRIBUTE_UNUSED) | |
5961 | { | |
5962 | demand_empty_rest_of_line (); | |
5963 | ||
5964 | if (bundle_align_p2 == 0) | |
5965 | { | |
5966 | as_bad (_(".bundle_lock is meaningless without .bundle_align_mode")); | |
5967 | return; | |
5968 | } | |
5969 | ||
d416e51d | 5970 | if (bundle_lock_depth == 0) |
fa94de6b | 5971 | { |
d416e51d RM |
5972 | bundle_lock_frchain = frchain_now; |
5973 | bundle_lock_frag = start_bundle (); | |
fa94de6b | 5974 | } |
d416e51d | 5975 | ++bundle_lock_depth; |
fa94de6b RM |
5976 | } |
5977 | ||
5978 | void | |
5979 | s_bundle_unlock (int arg ATTRIBUTE_UNUSED) | |
5980 | { | |
5981 | unsigned int size; | |
5982 | ||
5983 | demand_empty_rest_of_line (); | |
5984 | ||
5985 | if (bundle_lock_frag == NULL) | |
5986 | { | |
5987 | as_bad (_(".bundle_unlock without preceding .bundle_lock")); | |
5988 | return; | |
5989 | } | |
5990 | ||
5991 | gas_assert (bundle_align_p2 > 0); | |
5992 | ||
d416e51d RM |
5993 | gas_assert (bundle_lock_depth > 0); |
5994 | if (--bundle_lock_depth > 0) | |
5995 | return; | |
5996 | ||
fa94de6b RM |
5997 | size = pending_bundle_size (bundle_lock_frag); |
5998 | ||
5999 | if (size > (1U << bundle_align_p2)) | |
6000 | as_bad (_(".bundle_lock sequence is %u bytes, but bundle size only %u"), | |
6001 | size, 1 << bundle_align_p2); | |
6002 | else | |
6003 | finish_bundle (bundle_lock_frag, size); | |
6004 | ||
6005 | bundle_lock_frag = NULL; | |
6006 | bundle_lock_frchain = NULL; | |
6007 | } | |
6008 | ||
6009 | #endif /* HANDLE_BUNDLE */ | |
6010 | \f | |
041ff4dd | 6011 | void |
39e6acbd | 6012 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6013 | { |
40a4d956 | 6014 | ignore_rest_of_line (); |
252b5132 RH |
6015 | } |
6016 | ||
252b5132 | 6017 | void |
39e6acbd | 6018 | read_print_statistics (FILE *file) |
252b5132 RH |
6019 | { |
6020 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
6021 | } | |
6022 | ||
041ff4dd NC |
6023 | /* Inserts the given line into the input stream. |
6024 | ||
9f10757c TW |
6025 | This call avoids macro/conditionals nesting checking, since the contents of |
6026 | the line are assumed to replace the contents of a line already scanned. | |
6027 | ||
47eebc20 | 6028 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
6029 | called by md_start_line_hook(). The given line is assumed to already be |
6030 | properly scrubbed. */ | |
6031 | ||
6032 | void | |
39e6acbd | 6033 | input_scrub_insert_line (const char *line) |
9f10757c TW |
6034 | { |
6035 | sb newline; | |
d2ae702c L |
6036 | size_t len = strlen (line); |
6037 | sb_build (&newline, len); | |
6038 | sb_add_buffer (&newline, line, len); | |
9f10757c TW |
6039 | input_scrub_include_sb (&newline, input_line_pointer, 0); |
6040 | sb_kill (&newline); | |
6041 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6042 | } | |
6043 | ||
6044 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 6045 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
6046 | |
6047 | void | |
39e6acbd | 6048 | input_scrub_insert_file (char *path) |
9f10757c TW |
6049 | { |
6050 | input_scrub_include_file (path, input_line_pointer); | |
6051 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6052 | } | |
40a4d956 JB |
6053 | |
6054 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
6055 | ||
6056 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
6057 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
6058 | #endif | |
6059 | ||
6060 | static char * | |
7592cfd7 NC |
6061 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
6062 | int in_macro) | |
40a4d956 JB |
6063 | { |
6064 | char inquote = '\0'; | |
6065 | int inescape = 0; | |
6066 | ||
6067 | while (!is_end_of_line[(unsigned char) *s] | |
6068 | || (inquote && !ISCNTRL (*s)) | |
6069 | || (inquote == '\'' && flag_mri) | |
6070 | #ifdef TC_EOL_IN_INSN | |
6071 | || (insn && TC_EOL_IN_INSN (s)) | |
6072 | #endif | |
7592cfd7 NC |
6073 | /* PR 6926: When we are parsing the body of a macro the sequence |
6074 | \@ is special - it refers to the invocation count. If the @ | |
6075 | character happens to be registered as a line-separator character | |
6076 | by the target, then the is_end_of_line[] test above will have | |
6077 | returned true, but we need to ignore the line separating | |
6078 | semantics in this particular case. */ | |
6079 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
6080 | ) |
6081 | { | |
6082 | if (mri_string && *s == '\'') | |
6083 | inquote ^= *s; | |
6084 | else if (inescape) | |
6085 | inescape = 0; | |
6086 | else if (*s == '\\') | |
6087 | inescape = 1; | |
6088 | else if (!inquote | |
6089 | ? *s == '"' | |
6090 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
6091 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
6092 | #endif | |
6093 | : *s == inquote) | |
6094 | inquote ^= *s; | |
6095 | ++s; | |
6096 | } | |
6097 | if (inquote) | |
6098 | as_warn (_("missing closing `%c'"), inquote); | |
6099 | if (inescape) | |
6100 | as_warn (_("stray `\\'")); | |
6101 | return s; | |
6102 | } | |
6103 | ||
6104 | char * | |
6105 | find_end_of_line (char *s, int mri_string) | |
6106 | { | |
7592cfd7 | 6107 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 6108 | } |