Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
b90efa5b | 2 | Copyright (C) 1986-2015 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 | |
e74211b6 | 560 | #define HANDLE_CONDITIONAL_ASSEMBLY(num_read) \ |
252b5132 RH |
561 | if (ignore_input ()) \ |
562 | { \ | |
e74211b6 JB |
563 | char *eol = find_end_of_line (input_line_pointer - (num_read), \ |
564 | flag_m68k_mri); \ | |
40a4d956 JB |
565 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
566 | && eol >= buffer_limit) \ | |
567 | ? buffer_limit \ | |
568 | : eol + 1; \ | |
252b5132 RH |
569 | continue; \ |
570 | } | |
571 | ||
252b5132 RH |
572 | /* This function is used when scrubbing the characters between #APP |
573 | and #NO_APP. */ | |
574 | ||
575 | static char *scrub_string; | |
576 | static char *scrub_string_end; | |
577 | ||
39a45edc AM |
578 | static size_t |
579 | scrub_from_string (char *buf, size_t buflen) | |
252b5132 | 580 | { |
39a45edc | 581 | size_t copy; |
2b47531b ILT |
582 | |
583 | copy = scrub_string_end - scrub_string; | |
584 | if (copy > buflen) | |
585 | copy = buflen; | |
586 | memcpy (buf, scrub_string, copy); | |
587 | scrub_string += copy; | |
588 | return copy; | |
252b5132 RH |
589 | } |
590 | ||
5e75c3ab JB |
591 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
592 | static int | |
593 | try_macro (char term, const char *line) | |
594 | { | |
595 | sb out; | |
596 | const char *err; | |
597 | macro_entry *macro; | |
598 | ||
599 | if (check_macro (line, &out, &err, ¯o)) | |
600 | { | |
601 | if (err != NULL) | |
602 | as_bad ("%s", err); | |
603 | *input_line_pointer++ = term; | |
604 | input_scrub_include_sb (&out, | |
605 | input_line_pointer, 1); | |
606 | sb_kill (&out); | |
607 | buffer_limit = | |
608 | input_scrub_next_buffer (&input_line_pointer); | |
609 | #ifdef md_macro_info | |
610 | md_macro_info (macro); | |
611 | #endif | |
612 | return 1; | |
613 | } | |
614 | return 0; | |
615 | } | |
616 | ||
fa94de6b RM |
617 | #ifdef HANDLE_BUNDLE |
618 | /* Start a new instruction bundle. Returns the rs_align_code frag that | |
619 | will be used to align the new bundle. */ | |
620 | static fragS * | |
621 | start_bundle (void) | |
622 | { | |
623 | fragS *frag = frag_now; | |
624 | ||
625 | frag_align_code (0, 0); | |
626 | ||
627 | while (frag->fr_type != rs_align_code) | |
628 | frag = frag->fr_next; | |
629 | ||
630 | gas_assert (frag != frag_now); | |
631 | ||
632 | return frag; | |
633 | } | |
634 | ||
635 | /* Calculate the maximum size after relaxation of the region starting | |
636 | at the given frag and extending through frag_now (which is unfinished). */ | |
637 | static unsigned int | |
638 | pending_bundle_size (fragS *frag) | |
639 | { | |
640 | unsigned int offset = frag->fr_fix; | |
641 | unsigned int size = 0; | |
642 | ||
643 | gas_assert (frag != frag_now); | |
644 | gas_assert (frag->fr_type == rs_align_code); | |
645 | ||
646 | while (frag != frag_now) | |
647 | { | |
648 | /* This should only happen in what will later become an error case. */ | |
649 | if (frag == NULL) | |
650 | return 0; | |
651 | ||
652 | size += frag->fr_fix; | |
653 | if (frag->fr_type == rs_machine_dependent) | |
654 | size += md_frag_max_var (frag); | |
655 | ||
656 | frag = frag->fr_next; | |
657 | } | |
658 | ||
659 | gas_assert (frag == frag_now); | |
660 | size += frag_now_fix (); | |
661 | if (frag->fr_type == rs_machine_dependent) | |
662 | size += md_frag_max_var (frag); | |
663 | ||
664 | gas_assert (size >= offset); | |
665 | ||
666 | return size - offset; | |
667 | } | |
668 | ||
669 | /* Finish off the frag created to ensure bundle alignment. */ | |
670 | static void | |
671 | finish_bundle (fragS *frag, unsigned int size) | |
672 | { | |
673 | gas_assert (bundle_align_p2 > 0); | |
674 | gas_assert (frag->fr_type == rs_align_code); | |
675 | ||
676 | if (size > 1) | |
677 | { | |
678 | /* If there is more than a single byte, then we need to set up the | |
679 | alignment frag. Otherwise we leave it at its initial state from | |
680 | calling frag_align_code (0, 0), so that it does nothing. */ | |
681 | frag->fr_offset = bundle_align_p2; | |
682 | frag->fr_subtype = size - 1; | |
683 | } | |
684 | ||
685 | /* We do this every time rather than just in s_bundle_align_mode | |
686 | so that we catch any affected section without needing hooks all | |
687 | over for all paths that do section changes. It's cheap enough. */ | |
688 | record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER); | |
689 | } | |
690 | ||
691 | /* Assemble one instruction. This takes care of the bundle features | |
692 | around calling md_assemble. */ | |
693 | static void | |
694 | assemble_one (char *line) | |
695 | { | |
8d3eaee6 | 696 | fragS *insn_start_frag = NULL; |
fa94de6b RM |
697 | |
698 | if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now) | |
699 | { | |
700 | as_bad (_("cannot change section or subsection inside .bundle_lock")); | |
701 | /* Clearing this serves as a marker that we have already complained. */ | |
702 | bundle_lock_frchain = NULL; | |
703 | } | |
704 | ||
705 | if (bundle_lock_frchain == NULL && bundle_align_p2 > 0) | |
706 | insn_start_frag = start_bundle (); | |
707 | ||
708 | md_assemble (line); | |
709 | ||
710 | if (bundle_lock_frchain != NULL) | |
711 | { | |
712 | /* Make sure this hasn't pushed the locked sequence | |
713 | past the bundle size. */ | |
714 | unsigned int bundle_size = pending_bundle_size (bundle_lock_frag); | |
715 | if (bundle_size > (1U << bundle_align_p2)) | |
716 | as_bad (_("\ | |
717 | .bundle_lock sequence at %u bytes but .bundle_align_mode limit is %u bytes"), | |
718 | bundle_size, 1U << bundle_align_p2); | |
719 | } | |
720 | else if (bundle_align_p2 > 0) | |
721 | { | |
722 | unsigned int insn_size = pending_bundle_size (insn_start_frag); | |
723 | ||
724 | if (insn_size > (1U << bundle_align_p2)) | |
725 | as_bad (_("\ | |
726 | single instruction is %u bytes long but .bundle_align_mode limit is %u"), | |
727 | (unsigned int) insn_size, 1U << bundle_align_p2); | |
728 | ||
729 | finish_bundle (insn_start_frag, insn_size); | |
730 | } | |
731 | } | |
732 | ||
733 | #else /* !HANDLE_BUNDLE */ | |
734 | ||
735 | # define assemble_one(line) md_assemble(line) | |
736 | ||
737 | #endif /* HANDLE_BUNDLE */ | |
738 | ||
041ff4dd NC |
739 | /* We read the file, putting things into a web that represents what we |
740 | have been reading. */ | |
741 | void | |
39e6acbd | 742 | read_a_source_file (char *name) |
252b5132 | 743 | { |
91d6fa6a NC |
744 | char c; |
745 | char *s; /* String of symbol, '\0' appended. */ | |
746 | int temp; | |
252b5132 RH |
747 | pseudo_typeS *pop; |
748 | ||
4c400d5e AM |
749 | #ifdef WARN_COMMENTS |
750 | found_comment = 0; | |
751 | #endif | |
752 | ||
252b5132 RH |
753 | buffer = input_scrub_new_file (name); |
754 | ||
755 | listing_file (name); | |
756 | listing_newline (NULL); | |
757 | register_dependency (name); | |
758 | ||
759 | /* Generate debugging information before we've read anything in to denote | |
760 | this file as the "main" source file and not a subordinate one | |
761 | (e.g. N_SO vs N_SOL in stabs). */ | |
762 | generate_file_debug (); | |
763 | ||
764 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 765 | { /* We have another line to parse. */ |
5e75c3ab JB |
766 | #ifndef NO_LISTING |
767 | /* In order to avoid listing macro expansion lines with labels | |
768 | multiple times, keep track of which line was last issued. */ | |
769 | static char *last_eol; | |
770 | ||
771 | last_eol = NULL; | |
772 | #endif | |
252b5132 RH |
773 | while (input_line_pointer < buffer_limit) |
774 | { | |
f19df8f7 | 775 | bfd_boolean was_new_line; |
041ff4dd | 776 | /* We have more of this buffer to parse. */ |
252b5132 | 777 | |
041ff4dd NC |
778 | /* We now have input_line_pointer->1st char of next line. |
779 | If input_line_pointer [-1] == '\n' then we just | |
780 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
781 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
782 | if (was_new_line) | |
252b5132 | 783 | { |
4a826962 | 784 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
785 | #ifdef md_start_line_hook |
786 | md_start_line_hook (); | |
787 | #endif | |
252b5132 RH |
788 | if (input_line_pointer[-1] == '\n') |
789 | bump_line_counters (); | |
f19df8f7 | 790 | } |
252b5132 | 791 | |
f19df8f7 AM |
792 | #ifndef NO_LISTING |
793 | /* If listing is on, and we are expanding a macro, then give | |
794 | the listing code the contents of the expanded line. */ | |
795 | if (listing) | |
796 | { | |
797 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
798 | { | |
799 | /* Find the end of the current expanded macro line. */ | |
800 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
801 | ||
802 | if (s != last_eol) | |
803 | { | |
804 | char *copy; | |
805 | int len; | |
806 | ||
807 | last_eol = s; | |
808 | /* Copy it for safe keeping. Also give an indication of | |
809 | how much macro nesting is involved at this point. */ | |
810 | len = s - input_line_pointer; | |
811 | copy = (char *) xmalloc (len + macro_nest + 2); | |
812 | memset (copy, '>', macro_nest); | |
813 | copy[macro_nest] = ' '; | |
814 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
815 | copy[macro_nest + 1 + len] = '\0'; | |
816 | ||
817 | /* Install the line with the listing facility. */ | |
818 | listing_newline (copy); | |
819 | } | |
820 | } | |
821 | else | |
822 | listing_newline (NULL); | |
823 | } | |
824 | #endif | |
825 | if (was_new_line) | |
826 | { | |
252b5132 RH |
827 | line_label = NULL; |
828 | ||
abd63a32 | 829 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
830 | { |
831 | /* Text at the start of a line must be a label, we | |
832 | run down and stick a colon in. */ | |
833 | if (is_name_beginner (*input_line_pointer)) | |
834 | { | |
835 | char *line_start = input_line_pointer; | |
252b5132 RH |
836 | int mri_line_macro; |
837 | ||
e74211b6 | 838 | HANDLE_CONDITIONAL_ASSEMBLY (0); |
252b5132 RH |
839 | |
840 | c = get_symbol_end (); | |
841 | ||
842 | /* In MRI mode, the EQU and MACRO pseudoops must | |
843 | be handled specially. */ | |
844 | mri_line_macro = 0; | |
845 | if (flag_m68k_mri) | |
846 | { | |
847 | char *rest = input_line_pointer + 1; | |
848 | ||
849 | if (*rest == ':') | |
850 | ++rest; | |
851 | if (*rest == ' ' || *rest == '\t') | |
852 | ++rest; | |
853 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
854 | || strncasecmp (rest, "SET", 3) == 0) | |
855 | && (rest[3] == ' ' || rest[3] == '\t')) | |
856 | { | |
857 | input_line_pointer = rest + 3; | |
858 | equals (line_start, | |
859 | strncasecmp (rest, "SET", 3) == 0); | |
860 | continue; | |
861 | } | |
862 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
863 | && (rest[5] == ' ' | |
864 | || rest[5] == '\t' | |
865 | || is_end_of_line[(unsigned char) rest[5]])) | |
866 | mri_line_macro = 1; | |
867 | } | |
868 | ||
869 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
870 | pseudo-op specially: we don't want to put the |
871 | symbol in the symbol table. */ | |
041ff4dd | 872 | if (!mri_line_macro |
a25c045a | 873 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
874 | && TC_START_LABEL_WITHOUT_COLON(c, |
875 | input_line_pointer) | |
a25c045a | 876 | #endif |
ef99799a | 877 | ) |
252b5132 RH |
878 | line_label = colon (line_start); |
879 | else | |
880 | line_label = symbol_create (line_start, | |
881 | absolute_section, | |
882 | (valueT) 0, | |
883 | &zero_address_frag); | |
884 | ||
885 | *input_line_pointer = c; | |
886 | if (c == ':') | |
887 | input_line_pointer++; | |
888 | } | |
889 | } | |
890 | } | |
891 | ||
47eebc20 | 892 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
893 | We expect a well-formed assembler statement. |
894 | A "symbol-name:" is a statement. | |
f0e652b4 | 895 | |
041ff4dd NC |
896 | Depending on what compiler is used, the order of these tests |
897 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
898 | Each test is independent of all other tests at the (top) |
899 | level. */ | |
900 | do | |
041ff4dd | 901 | c = *input_line_pointer++; |
d2bdaea8 | 902 | while (c == '\t' || c == ' ' || c == '\f'); |
252b5132 | 903 | |
041ff4dd NC |
904 | /* C is the 1st significant character. |
905 | Input_line_pointer points after that character. */ | |
252b5132 RH |
906 | if (is_name_beginner (c)) |
907 | { | |
041ff4dd | 908 | /* Want user-defined label or pseudo/opcode. */ |
e74211b6 | 909 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 RH |
910 | |
911 | s = --input_line_pointer; | |
041ff4dd NC |
912 | c = get_symbol_end (); /* name's delimiter. */ |
913 | ||
914 | /* C is character after symbol. | |
d6415f6c AM |
915 | That character's place in the input line is now '\0'. |
916 | S points to the beginning of the symbol. | |
917 | [In case of pseudo-op, s->'.'.] | |
918 | Input_line_pointer->'\0' where c was. */ | |
5e8c8f8f | 919 | if (TC_START_LABEL (c, s, input_line_pointer)) |
252b5132 RH |
920 | { |
921 | if (flag_m68k_mri) | |
922 | { | |
923 | char *rest = input_line_pointer + 1; | |
924 | ||
925 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
926 | if (*rest == ':') |
927 | ++rest; | |
f0e652b4 | 928 | |
252b5132 RH |
929 | if (*rest == ' ' || *rest == '\t') |
930 | ++rest; | |
f0e652b4 | 931 | |
252b5132 RH |
932 | if ((strncasecmp (rest, "EQU", 3) == 0 |
933 | || strncasecmp (rest, "SET", 3) == 0) | |
934 | && (rest[3] == ' ' || rest[3] == '\t')) | |
935 | { | |
936 | input_line_pointer = rest + 3; | |
937 | equals (s, 1); | |
938 | continue; | |
939 | } | |
940 | } | |
941 | ||
041ff4dd NC |
942 | line_label = colon (s); /* User-defined label. */ |
943 | /* Put ':' back for error messages' sake. */ | |
944 | *input_line_pointer++ = ':'; | |
a645d1eb L |
945 | #ifdef tc_check_label |
946 | tc_check_label (line_label); | |
947 | #endif | |
041ff4dd | 948 | /* Input_line_pointer->after ':'. */ |
252b5132 | 949 | SKIP_WHITESPACE (); |
252b5132 | 950 | } |
fa94de6b | 951 | else if ((c == '=' && input_line_pointer[1] == '=') |
18d7868b HPN |
952 | || ((c == ' ' || c == '\t') |
953 | && input_line_pointer[1] == '=' | |
954 | && input_line_pointer[2] == '=')) | |
9497f5ac NC |
955 | { |
956 | equals (s, -1); | |
957 | demand_empty_rest_of_line (); | |
958 | } | |
fa94de6b RM |
959 | else if ((c == '=' |
960 | || ((c == ' ' || c == '\t') | |
961 | && input_line_pointer[1] == '=')) | |
ee3c9814 | 962 | #ifdef TC_EQUAL_IN_INSN |
fa94de6b | 963 | && !TC_EQUAL_IN_INSN (c, s) |
ee3c9814 | 964 | #endif |
fa94de6b | 965 | ) |
252b5132 RH |
966 | { |
967 | equals (s, 1); | |
968 | demand_empty_rest_of_line (); | |
969 | } | |
970 | else | |
041ff4dd NC |
971 | { |
972 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
973 | pop = NULL; |
974 | ||
a8a3b3b2 | 975 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
976 | { |
977 | char *s2 = s; | |
37d8bb27 NC |
978 | |
979 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
980 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 981 | |
252b5132 RH |
982 | while (*s2) |
983 | { | |
3882b010 | 984 | *s2 = TOLOWER (*s2); |
252b5132 RH |
985 | s2++; |
986 | } | |
987 | } | |
988 | #endif | |
abd63a32 | 989 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 990 | { |
7be1c489 AM |
991 | /* The MRI assembler uses pseudo-ops without |
992 | a period. */ | |
252b5132 RH |
993 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
994 | if (pop != NULL && pop->poc_handler == NULL) | |
995 | pop = NULL; | |
996 | } | |
997 | ||
998 | if (pop != NULL | |
041ff4dd | 999 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 1000 | { |
041ff4dd | 1001 | /* PSEUDO - OP. |
f0e652b4 | 1002 | |
d6415f6c AM |
1003 | WARNING: c has next char, which may be end-of-line. |
1004 | We lookup the pseudo-op table with s+1 because we | |
1005 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
1006 | |
1007 | if (pop == NULL) | |
1008 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
1009 | if (pop && !pop->poc_handler) |
1010 | pop = NULL; | |
252b5132 RH |
1011 | |
1012 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
1013 | automatic alignment directive. What a hack |
1014 | this is. */ | |
252b5132 RH |
1015 | if (mri_pending_align |
1016 | && (pop == NULL | |
041ff4dd NC |
1017 | || !((pop->poc_handler == cons |
1018 | && pop->poc_val == 1) | |
1019 | || (pop->poc_handler == s_space | |
1020 | && pop->poc_val == 1) | |
252b5132 | 1021 | #ifdef tc_conditional_pseudoop |
041ff4dd | 1022 | || tc_conditional_pseudoop (pop) |
252b5132 | 1023 | #endif |
041ff4dd NC |
1024 | || pop->poc_handler == s_if |
1025 | || pop->poc_handler == s_ifdef | |
1026 | || pop->poc_handler == s_ifc | |
1027 | || pop->poc_handler == s_ifeqs | |
1028 | || pop->poc_handler == s_else | |
1029 | || pop->poc_handler == s_endif | |
1030 | || pop->poc_handler == s_globl | |
1031 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
1032 | { |
1033 | do_align (1, (char *) NULL, 0, 0); | |
1034 | mri_pending_align = 0; | |
f0e652b4 | 1035 | |
252b5132 RH |
1036 | if (line_label != NULL) |
1037 | { | |
2b47531b | 1038 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1039 | S_SET_VALUE (line_label, frag_now_fix ()); |
1040 | } | |
1041 | } | |
1042 | ||
041ff4dd | 1043 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
1044 | if (pop == NULL) |
1045 | { | |
5e75c3ab JB |
1046 | char *end = input_line_pointer; |
1047 | ||
252b5132 RH |
1048 | *input_line_pointer = c; |
1049 | s_ignore (0); | |
5e75c3ab JB |
1050 | c = *--input_line_pointer; |
1051 | *input_line_pointer = '\0'; | |
1052 | if (! macro_defined || ! try_macro (c, s)) | |
1053 | { | |
1054 | *end = '\0'; | |
1055 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
1056 | *input_line_pointer++ = c; | |
1057 | } | |
252b5132 RH |
1058 | continue; |
1059 | } | |
1060 | ||
041ff4dd | 1061 | /* Put it back for error messages etc. */ |
252b5132 RH |
1062 | *input_line_pointer = c; |
1063 | /* The following skip of whitespace is compulsory. | |
1064 | A well shaped space is sometimes all that separates | |
041ff4dd | 1065 | keyword from operands. */ |
252b5132 RH |
1066 | if (c == ' ' || c == '\t') |
1067 | input_line_pointer++; | |
041ff4dd NC |
1068 | |
1069 | /* Input_line is restored. | |
d6415f6c AM |
1070 | Input_line_pointer->1st non-blank char |
1071 | after pseudo-operation. */ | |
252b5132 RH |
1072 | (*pop->poc_handler) (pop->poc_val); |
1073 | ||
1074 | /* If that was .end, just get out now. */ | |
1075 | if (pop->poc_handler == s_end) | |
1076 | goto quit; | |
1077 | } | |
1078 | else | |
1079 | { | |
041ff4dd NC |
1080 | /* WARNING: c has char, which may be end-of-line. */ |
1081 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 | 1082 | *input_line_pointer = c; |
7592cfd7 | 1083 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
252b5132 RH |
1084 | c = *input_line_pointer; |
1085 | *input_line_pointer = '\0'; | |
1086 | ||
1087 | generate_lineno_debug (); | |
1088 | ||
5e75c3ab JB |
1089 | if (macro_defined && try_macro (c, s)) |
1090 | continue; | |
252b5132 RH |
1091 | |
1092 | if (mri_pending_align) | |
1093 | { | |
1094 | do_align (1, (char *) NULL, 0, 0); | |
1095 | mri_pending_align = 0; | |
1096 | if (line_label != NULL) | |
1097 | { | |
2b47531b | 1098 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1099 | S_SET_VALUE (line_label, frag_now_fix ()); |
1100 | } | |
1101 | } | |
1102 | ||
fa94de6b | 1103 | assemble_one (s); /* Assemble 1 instruction. */ |
252b5132 RH |
1104 | |
1105 | *input_line_pointer++ = c; | |
1106 | ||
1107 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
1108 | this instruction. */ |
1109 | } | |
1110 | } | |
252b5132 | 1111 | continue; |
041ff4dd | 1112 | } |
252b5132 RH |
1113 | |
1114 | /* Empty statement? */ | |
1115 | if (is_end_of_line[(unsigned char) c]) | |
1116 | continue; | |
1117 | ||
3882b010 | 1118 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 1119 | { |
041ff4dd | 1120 | /* local label ("4:") */ |
252b5132 RH |
1121 | char *backup = input_line_pointer; |
1122 | ||
e74211b6 | 1123 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 RH |
1124 | |
1125 | temp = c - '0'; | |
1126 | ||
041ff4dd | 1127 | /* Read the whole number. */ |
3882b010 | 1128 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
1129 | { |
1130 | temp = (temp * 10) + *input_line_pointer - '0'; | |
1131 | ++input_line_pointer; | |
041ff4dd | 1132 | } |
252b5132 RH |
1133 | |
1134 | if (LOCAL_LABELS_DOLLAR | |
1135 | && *input_line_pointer == '$' | |
1136 | && *(input_line_pointer + 1) == ':') | |
1137 | { | |
1138 | input_line_pointer += 2; | |
1139 | ||
1140 | if (dollar_label_defined (temp)) | |
1141 | { | |
1142 | as_fatal (_("label \"%d$\" redefined"), temp); | |
1143 | } | |
1144 | ||
1145 | define_dollar_label (temp); | |
1146 | colon (dollar_label_name (temp, 0)); | |
1147 | continue; | |
1148 | } | |
1149 | ||
1150 | if (LOCAL_LABELS_FB | |
1151 | && *input_line_pointer++ == ':') | |
1152 | { | |
1153 | fb_label_instance_inc (temp); | |
1154 | colon (fb_label_name (temp, 0)); | |
1155 | continue; | |
1156 | } | |
1157 | ||
1158 | input_line_pointer = backup; | |
1159 | } /* local label ("4:") */ | |
1160 | ||
1161 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 1162 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1163 | sb sbuf; |
252b5132 RH |
1164 | char *ends; |
1165 | char *new_buf; | |
1166 | char *new_tmp; | |
1167 | unsigned int new_length; | |
1168 | char *tmp_buf = 0; | |
1169 | ||
252b5132 RH |
1170 | s = input_line_pointer; |
1171 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1172 | { |
1173 | /* We ignore it. */ | |
1174 | ignore_rest_of_line (); | |
1175 | continue; | |
1176 | } | |
1177 | bump_line_counters (); | |
252b5132 RH |
1178 | s += 4; |
1179 | ||
1180 | ends = strstr (s, "#NO_APP\n"); | |
1181 | ||
1182 | if (!ends) | |
1183 | { | |
1184 | unsigned int tmp_len; | |
1185 | unsigned int num; | |
1186 | ||
1187 | /* The end of the #APP wasn't in this buffer. We | |
1188 | keep reading in buffers until we find the #NO_APP | |
1189 | that goes with this #APP There is one. The specs | |
47eebc20 | 1190 | guarantee it... */ |
252b5132 | 1191 | tmp_len = buffer_limit - s; |
1e9cc1c2 | 1192 | tmp_buf = (char *) xmalloc (tmp_len + 1); |
252b5132 RH |
1193 | memcpy (tmp_buf, s, tmp_len); |
1194 | do | |
1195 | { | |
1196 | new_tmp = input_scrub_next_buffer (&buffer); | |
1197 | if (!new_tmp) | |
1198 | break; | |
1199 | else | |
1200 | buffer_limit = new_tmp; | |
1201 | input_line_pointer = buffer; | |
1202 | ends = strstr (buffer, "#NO_APP\n"); | |
1203 | if (ends) | |
1204 | num = ends - buffer; | |
1205 | else | |
1206 | num = buffer_limit - buffer; | |
1207 | ||
1e9cc1c2 | 1208 | tmp_buf = (char *) xrealloc (tmp_buf, tmp_len + num); |
252b5132 RH |
1209 | memcpy (tmp_buf + tmp_len, buffer, num); |
1210 | tmp_len += num; | |
1211 | } | |
1212 | while (!ends); | |
1213 | ||
1214 | input_line_pointer = ends ? ends + 8 : NULL; | |
1215 | ||
1216 | s = tmp_buf; | |
1217 | ends = s + tmp_len; | |
1218 | ||
1219 | } | |
1220 | else | |
1221 | { | |
1222 | input_line_pointer = ends + 8; | |
1223 | } | |
1224 | ||
1225 | scrub_string = s; | |
1226 | scrub_string_end = ends; | |
1227 | ||
1228 | new_length = ends - s; | |
1229 | new_buf = (char *) xmalloc (new_length); | |
1230 | new_tmp = new_buf; | |
1231 | for (;;) | |
1232 | { | |
39a45edc AM |
1233 | size_t space; |
1234 | size_t size; | |
252b5132 RH |
1235 | |
1236 | space = (new_buf + new_length) - new_tmp; | |
1237 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1238 | ||
1239 | if (size < space) | |
1240 | { | |
64e55042 | 1241 | new_tmp[size] = 0; |
252b5132 RH |
1242 | break; |
1243 | } | |
1244 | ||
1e9cc1c2 | 1245 | new_buf = (char *) xrealloc (new_buf, new_length + 100); |
252b5132 RH |
1246 | new_tmp = new_buf + new_length; |
1247 | new_length += 100; | |
1248 | } | |
1249 | ||
1250 | if (tmp_buf) | |
1251 | free (tmp_buf); | |
f0e652b4 | 1252 | |
64e55042 HPN |
1253 | /* We've "scrubbed" input to the preferred format. In the |
1254 | process we may have consumed the whole of the remaining | |
1255 | file (and included files). We handle this formatted | |
1256 | input similar to that of macro expansion, letting | |
1257 | actual macro expansion (possibly nested) and other | |
1258 | input expansion work. Beware that in messages, line | |
1259 | numbers and possibly file names will be incorrect. */ | |
d2ae702c L |
1260 | new_length = strlen (new_buf); |
1261 | sb_build (&sbuf, new_length); | |
1262 | sb_add_buffer (&sbuf, new_buf, new_length); | |
64e55042 HPN |
1263 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); |
1264 | sb_kill (&sbuf); | |
1265 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1266 | free (new_buf); | |
252b5132 RH |
1267 | continue; |
1268 | } | |
1269 | ||
e74211b6 | 1270 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 RH |
1271 | |
1272 | #ifdef tc_unrecognized_line | |
1273 | if (tc_unrecognized_line (c)) | |
1274 | continue; | |
1275 | #endif | |
0e389e77 | 1276 | input_line_pointer--; |
601e61cd | 1277 | /* Report unknown char as error. */ |
c95b35a9 | 1278 | demand_empty_rest_of_line (); |
041ff4dd | 1279 | } |
041ff4dd | 1280 | } |
252b5132 RH |
1281 | |
1282 | quit: | |
04648e65 | 1283 | symbol_set_value_now (&dot_symbol); |
252b5132 | 1284 | |
fa94de6b RM |
1285 | #ifdef HANDLE_BUNDLE |
1286 | if (bundle_lock_frag != NULL) | |
1287 | { | |
1288 | as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line, | |
1289 | _(".bundle_lock with no matching .bundle_unlock")); | |
1290 | bundle_lock_frag = NULL; | |
1291 | bundle_lock_frchain = NULL; | |
d416e51d | 1292 | bundle_lock_depth = 0; |
fa94de6b RM |
1293 | } |
1294 | #endif | |
1295 | ||
252b5132 | 1296 | #ifdef md_cleanup |
041ff4dd | 1297 | md_cleanup (); |
252b5132 | 1298 | #endif |
041ff4dd NC |
1299 | /* Close the input file. */ |
1300 | input_scrub_close (); | |
4c400d5e AM |
1301 | #ifdef WARN_COMMENTS |
1302 | { | |
1303 | if (warn_comment && found_comment) | |
1304 | as_warn_where (found_comment_file, found_comment, | |
1305 | "first comment found here"); | |
1306 | } | |
1307 | #endif | |
252b5132 RH |
1308 | } |
1309 | ||
e5604d79 | 1310 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
956a6ba3 | 1311 | Take the sign of the number from SIGN rather than X_add_number. */ |
e5604d79 RS |
1312 | |
1313 | static void | |
956a6ba3 | 1314 | convert_to_bignum (expressionS *exp, int sign) |
e5604d79 RS |
1315 | { |
1316 | valueT value; | |
1317 | unsigned int i; | |
1318 | ||
1319 | value = exp->X_add_number; | |
1320 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1321 | { | |
1322 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1323 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1324 | } | |
1325 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1326 | the sign of the original value. */ | |
956a6ba3 JB |
1327 | if ((exp->X_add_number < 0) == !sign) |
1328 | generic_bignum[i++] = sign ? LITTLENUM_MASK : 0; | |
e5604d79 RS |
1329 | exp->X_op = O_big; |
1330 | exp->X_add_number = i; | |
1331 | } | |
1332 | ||
252b5132 RH |
1333 | /* For most MRI pseudo-ops, the line actually ends at the first |
1334 | nonquoted space. This function looks for that point, stuffs a null | |
1335 | in, and sets *STOPCP to the character that used to be there, and | |
1336 | returns the location. | |
1337 | ||
1338 | Until I hear otherwise, I am going to assume that this is only true | |
1339 | for the m68k MRI assembler. */ | |
1340 | ||
1341 | char * | |
39e6acbd | 1342 | mri_comment_field (char *stopcp) |
252b5132 | 1343 | { |
252b5132 | 1344 | char *s; |
041ff4dd | 1345 | #ifdef TC_M68K |
252b5132 RH |
1346 | int inquote = 0; |
1347 | ||
1348 | know (flag_m68k_mri); | |
1349 | ||
1350 | for (s = input_line_pointer; | |
041ff4dd | 1351 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1352 | || inquote); |
1353 | s++) | |
1354 | { | |
1355 | if (*s == '\'') | |
041ff4dd | 1356 | inquote = !inquote; |
252b5132 | 1357 | } |
252b5132 | 1358 | #else |
041ff4dd NC |
1359 | for (s = input_line_pointer; |
1360 | !is_end_of_line[(unsigned char) *s]; | |
1361 | s++) | |
252b5132 | 1362 | ; |
041ff4dd | 1363 | #endif |
252b5132 RH |
1364 | *stopcp = *s; |
1365 | *s = '\0'; | |
f0e652b4 | 1366 | |
252b5132 | 1367 | return s; |
252b5132 RH |
1368 | } |
1369 | ||
1370 | /* Skip to the end of an MRI comment field. */ | |
1371 | ||
1372 | void | |
39e6acbd | 1373 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1374 | { |
1375 | know (flag_mri); | |
1376 | ||
1377 | input_line_pointer = stop; | |
1378 | *stop = stopc; | |
041ff4dd | 1379 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1380 | ++input_line_pointer; |
1381 | } | |
1382 | ||
041ff4dd | 1383 | void |
39e6acbd | 1384 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1385 | { |
1386 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1387 | } | |
1388 | ||
1389 | /* Guts of .align directive. N is the power of two to which to align. | |
1390 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1391 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1392 | the maximum number of characters to skip when doing the alignment, | |
1393 | or 0 if there is no maximum. */ | |
1394 | ||
041ff4dd | 1395 | static void |
39e6acbd | 1396 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1397 | { |
ebeb9253 AM |
1398 | if (now_seg == absolute_section) |
1399 | { | |
1400 | if (fill != NULL) | |
1401 | while (len-- > 0) | |
1402 | if (*fill++ != '\0') | |
1403 | { | |
1404 | as_warn (_("ignoring fill value in absolute section")); | |
1405 | break; | |
1406 | } | |
1407 | fill = NULL; | |
1408 | len = 0; | |
1409 | } | |
1410 | ||
b8861cfb NS |
1411 | #ifdef md_flush_pending_output |
1412 | md_flush_pending_output (); | |
1413 | #endif | |
252b5132 RH |
1414 | #ifdef md_do_align |
1415 | md_do_align (n, fill, len, max, just_record_alignment); | |
1416 | #endif | |
1417 | ||
041ff4dd | 1418 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1419 | if (n != 0 && !need_pass_2) |
1420 | { | |
0a9ef439 RH |
1421 | if (fill == NULL) |
1422 | { | |
1423 | if (subseg_text_p (now_seg)) | |
1424 | frag_align_code (n, max); | |
1425 | else | |
1426 | frag_align (n, 0, max); | |
1427 | } | |
1428 | else if (len <= 1) | |
252b5132 RH |
1429 | frag_align (n, *fill, max); |
1430 | else | |
1431 | frag_align_pattern (n, fill, len, max); | |
1432 | } | |
1433 | ||
1434 | #ifdef md_do_align | |
a6bd2a4f | 1435 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1436 | #endif |
1437 | ||
bea9907b | 1438 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1439 | } |
1440 | ||
1441 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1442 | (in bytes). A negative ARG is the negative of the length of the | |
1443 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1444 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1445 | #ifndef TC_ALIGN_LIMIT |
1446 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1447 | #endif | |
9ebd302d | 1448 | |
252b5132 | 1449 | static void |
39e6acbd | 1450 | s_align (int arg, int bytes_p) |
252b5132 | 1451 | { |
11ec4ba9 | 1452 | unsigned int align_limit = TC_ALIGN_LIMIT; |
9ebd302d | 1453 | unsigned int align; |
252b5132 | 1454 | char *stop = NULL; |
fb25138b | 1455 | char stopc = 0; |
252b5132 RH |
1456 | offsetT fill = 0; |
1457 | int max; | |
1458 | int fill_p; | |
1459 | ||
1460 | if (flag_mri) | |
1461 | stop = mri_comment_field (&stopc); | |
1462 | ||
1463 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1464 | { | |
1465 | if (arg < 0) | |
1466 | align = 0; | |
1467 | else | |
041ff4dd | 1468 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1469 | } |
1470 | else | |
1471 | { | |
1472 | align = get_absolute_expression (); | |
1473 | SKIP_WHITESPACE (); | |
db2ed2e0 AM |
1474 | |
1475 | #ifdef TC_ALIGN_ZERO_IS_DEFAULT | |
1476 | if (arg > 0 && align == 0) | |
1477 | align = arg; | |
1478 | #endif | |
252b5132 RH |
1479 | } |
1480 | ||
1481 | if (bytes_p) | |
1482 | { | |
1483 | /* Convert to a power of 2. */ | |
1484 | if (align != 0) | |
1485 | { | |
1486 | unsigned int i; | |
1487 | ||
1488 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1489 | ; | |
1490 | if (align != 1) | |
0e389e77 | 1491 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1492 | |
252b5132 RH |
1493 | align = i; |
1494 | } | |
1495 | } | |
1496 | ||
b617dc20 | 1497 | if (align > align_limit) |
252b5132 | 1498 | { |
b617dc20 | 1499 | align = align_limit; |
0e389e77 | 1500 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1501 | } |
1502 | ||
1503 | if (*input_line_pointer != ',') | |
1504 | { | |
1505 | fill_p = 0; | |
1506 | max = 0; | |
1507 | } | |
1508 | else | |
1509 | { | |
1510 | ++input_line_pointer; | |
1511 | if (*input_line_pointer == ',') | |
1512 | fill_p = 0; | |
1513 | else | |
1514 | { | |
1515 | fill = get_absolute_expression (); | |
1516 | SKIP_WHITESPACE (); | |
1517 | fill_p = 1; | |
1518 | } | |
1519 | ||
1520 | if (*input_line_pointer != ',') | |
1521 | max = 0; | |
1522 | else | |
1523 | { | |
1524 | ++input_line_pointer; | |
1525 | max = get_absolute_expression (); | |
1526 | } | |
1527 | } | |
1528 | ||
041ff4dd | 1529 | if (!fill_p) |
252b5132 RH |
1530 | { |
1531 | if (arg < 0) | |
1532 | as_warn (_("expected fill pattern missing")); | |
1533 | do_align (align, (char *) NULL, 0, max); | |
1534 | } | |
1535 | else | |
1536 | { | |
1537 | int fill_len; | |
1538 | ||
1539 | if (arg >= 0) | |
1540 | fill_len = 1; | |
1541 | else | |
041ff4dd | 1542 | fill_len = -arg; |
252b5132 RH |
1543 | if (fill_len <= 1) |
1544 | { | |
1545 | char fill_char; | |
1546 | ||
1547 | fill_char = fill; | |
1548 | do_align (align, &fill_char, fill_len, max); | |
1549 | } | |
1550 | else | |
1551 | { | |
1552 | char ab[16]; | |
1553 | ||
1554 | if ((size_t) fill_len > sizeof ab) | |
1555 | abort (); | |
1556 | md_number_to_chars (ab, fill, fill_len); | |
1557 | do_align (align, ab, fill_len, max); | |
1558 | } | |
1559 | } | |
1560 | ||
1561 | demand_empty_rest_of_line (); | |
1562 | ||
1563 | if (flag_mri) | |
1564 | mri_comment_end (stop, stopc); | |
1565 | } | |
1566 | ||
1567 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1568 | align to a 4 byte boundary. */ | |
1569 | ||
041ff4dd | 1570 | void |
39e6acbd | 1571 | s_align_bytes (int arg) |
252b5132 RH |
1572 | { |
1573 | s_align (arg, 1); | |
1574 | } | |
1575 | ||
1576 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1577 | to a 2**4 boundary. */ | |
1578 | ||
041ff4dd | 1579 | void |
39e6acbd | 1580 | s_align_ptwo (int arg) |
252b5132 RH |
1581 | { |
1582 | s_align (arg, 0); | |
1583 | } | |
1584 | ||
caa32fe5 NC |
1585 | /* Switch in and out of alternate macro mode. */ |
1586 | ||
b38ead21 | 1587 | static void |
caa32fe5 NC |
1588 | s_altmacro (int on) |
1589 | { | |
1590 | demand_empty_rest_of_line (); | |
1591 | macro_set_alternate (on); | |
1592 | } | |
1593 | ||
7bfd842d NC |
1594 | /* Read a symbol name from input_line_pointer. |
1595 | ||
1596 | Stores the symbol name in a buffer and returns a pointer to this buffer. | |
1597 | The buffer is xalloc'ed. It is the caller's responsibility to free | |
1598 | this buffer. | |
1599 | ||
1600 | The name is not left in the i_l_p buffer as it may need processing | |
1601 | to handle escape characters. | |
1602 | ||
1603 | Advances i_l_p to the next non-whitespace character. | |
1604 | ||
1605 | If a symbol name could not be read, the routine issues an error | |
1606 | messages, skips to the end of the line and returns NULL. */ | |
1607 | ||
69602580 | 1608 | char * |
7bfd842d NC |
1609 | read_symbol_name (void) |
1610 | { | |
1611 | char * name; | |
1612 | char * start; | |
1613 | char c; | |
1614 | ||
1615 | c = *input_line_pointer++; | |
1616 | ||
1617 | if (c == '"') | |
1618 | { | |
1619 | #define SYM_NAME_CHUNK_LEN 128 | |
1620 | ptrdiff_t len = SYM_NAME_CHUNK_LEN; | |
1621 | char * name_end; | |
1622 | unsigned int C; | |
1623 | ||
1624 | start = name = xmalloc (len + 1); | |
1625 | ||
1626 | name_end = name + SYM_NAME_CHUNK_LEN; | |
1627 | ||
1628 | while (is_a_char (C = next_char_of_string ())) | |
1629 | { | |
1630 | if (name >= name_end) | |
1631 | { | |
1632 | ptrdiff_t sofar; | |
1633 | ||
1634 | sofar = name - start; | |
1635 | len += SYM_NAME_CHUNK_LEN; | |
1636 | start = xrealloc (start, len + 1); | |
1637 | name_end = start + len; | |
1638 | name = start + sofar; | |
1639 | } | |
34bca508 | 1640 | |
7bfd842d NC |
1641 | *name++ = (char) C; |
1642 | } | |
1643 | *name = 0; | |
1644 | ||
1645 | /* Since quoted symbol names can contain non-ASCII characters, | |
1646 | check the string and warn if it cannot be recognised by the | |
1647 | current character set. */ | |
1648 | if (mbstowcs (NULL, name, len) == (size_t) -1) | |
1649 | as_warn (_("symbol name not recognised in the current locale")); | |
1650 | } | |
1651 | else if (is_name_beginner (c) || c == '\001') | |
1652 | { | |
1653 | ptrdiff_t len; | |
1654 | ||
1655 | name = input_line_pointer - 1; | |
1656 | ||
1657 | /* We accept \001 in a name in case this is | |
1658 | being called with a constructed string. */ | |
1659 | while (is_part_of_name (c = *input_line_pointer++) | |
1660 | || c == '\001') | |
1661 | ; | |
1662 | ||
1663 | len = (input_line_pointer - name) - 1; | |
1664 | start = xmalloc (len + 1); | |
1665 | ||
1666 | memcpy (start, name, len); | |
1667 | start[len] = 0; | |
1668 | ||
1669 | /* Skip a name ender char if one is present. */ | |
1670 | if (! is_name_ender (c)) | |
1671 | --input_line_pointer; | |
1672 | } | |
1673 | else | |
1674 | name = start = NULL; | |
1675 | ||
1676 | if (name == start) | |
1677 | { | |
1678 | as_bad (_("expected symbol name")); | |
1679 | ignore_rest_of_line (); | |
1680 | return NULL; | |
1681 | } | |
34bca508 | 1682 | |
7bfd842d NC |
1683 | SKIP_WHITESPACE (); |
1684 | ||
1685 | return start; | |
1686 | } | |
1687 | ||
1688 | ||
e13bab5a AM |
1689 | symbolS * |
1690 | s_comm_internal (int param, | |
1691 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1692 | { |
e13bab5a | 1693 | char *name; |
e13bab5a AM |
1694 | offsetT temp, size; |
1695 | symbolS *symbolP = NULL; | |
252b5132 | 1696 | char *stop = NULL; |
fb25138b | 1697 | char stopc = 0; |
e13bab5a | 1698 | expressionS exp; |
252b5132 RH |
1699 | |
1700 | if (flag_mri) | |
1701 | stop = mri_comment_field (&stopc); | |
1702 | ||
7bfd842d NC |
1703 | if ((name = read_symbol_name ()) == NULL) |
1704 | goto out; | |
f0e652b4 | 1705 | |
e13bab5a AM |
1706 | /* Accept an optional comma after the name. The comma used to be |
1707 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1708 | if (*input_line_pointer == ',') | |
1709 | input_line_pointer++; | |
1710 | ||
e13bab5a AM |
1711 | temp = get_absolute_expr (&exp); |
1712 | size = temp; | |
65879393 | 1713 | size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1714 | if (exp.X_op == O_absent) |
252b5132 | 1715 | { |
e13bab5a | 1716 | as_bad (_("missing size expression")); |
252b5132 | 1717 | ignore_rest_of_line (); |
e13bab5a | 1718 | goto out; |
252b5132 | 1719 | } |
e13bab5a | 1720 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1721 | { |
e13bab5a | 1722 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1723 | ignore_rest_of_line (); |
e13bab5a | 1724 | goto out; |
252b5132 | 1725 | } |
f0e652b4 | 1726 | |
252b5132 | 1727 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1728 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1729 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1730 | { |
92757bc9 JB |
1731 | if (!S_IS_VOLATILE (symbolP)) |
1732 | { | |
1733 | symbolP = NULL; | |
1734 | as_bad (_("symbol `%s' is already defined"), name); | |
92757bc9 JB |
1735 | ignore_rest_of_line (); |
1736 | goto out; | |
1737 | } | |
89cdfe57 | 1738 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1739 | S_SET_SEGMENT (symbolP, undefined_section); |
1740 | S_SET_VALUE (symbolP, 0); | |
1741 | symbol_set_frag (symbolP, &zero_address_frag); | |
1742 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1743 | } |
f0e652b4 | 1744 | |
e13bab5a AM |
1745 | size = S_GET_VALUE (symbolP); |
1746 | if (size == 0) | |
1747 | size = temp; | |
1748 | else if (size != temp) | |
1749 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1750 | name, (long) size, (long) temp); | |
1751 | ||
e13bab5a AM |
1752 | if (comm_parse_extra != NULL) |
1753 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1754 | else |
1755 | { | |
e13bab5a | 1756 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1757 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1758 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
e13bab5a | 1759 | } |
252b5132 RH |
1760 | |
1761 | demand_empty_rest_of_line (); | |
e13bab5a | 1762 | out: |
252b5132 RH |
1763 | if (flag_mri) |
1764 | mri_comment_end (stop, stopc); | |
7bfd842d NC |
1765 | if (name != NULL) |
1766 | free (name); | |
e13bab5a AM |
1767 | return symbolP; |
1768 | } | |
1769 | ||
1770 | void | |
1771 | s_comm (int ignore) | |
1772 | { | |
1773 | s_comm_internal (ignore, NULL); | |
1774 | } | |
252b5132 RH |
1775 | |
1776 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1777 | symbol with the appropriate name. We make s_space do the right | |
1778 | thing by increasing the size. */ | |
1779 | ||
1780 | void | |
39e6acbd | 1781 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1782 | { |
1783 | char *name; | |
1784 | char c; | |
1785 | char *alc = NULL; | |
1786 | symbolS *sym; | |
1787 | offsetT align; | |
1788 | char *stop = NULL; | |
fb25138b | 1789 | char stopc = 0; |
252b5132 | 1790 | |
041ff4dd | 1791 | if (!flag_mri) |
252b5132 RH |
1792 | { |
1793 | s_comm (0); | |
1794 | return; | |
1795 | } | |
1796 | ||
1797 | stop = mri_comment_field (&stopc); | |
1798 | ||
1799 | SKIP_WHITESPACE (); | |
1800 | ||
1801 | name = input_line_pointer; | |
3882b010 | 1802 | if (!ISDIGIT (*name)) |
252b5132 RH |
1803 | c = get_symbol_end (); |
1804 | else | |
1805 | { | |
1806 | do | |
1807 | { | |
1808 | ++input_line_pointer; | |
1809 | } | |
3882b010 | 1810 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1811 | |
252b5132 RH |
1812 | c = *input_line_pointer; |
1813 | *input_line_pointer = '\0'; | |
1814 | ||
1815 | if (line_label != NULL) | |
1816 | { | |
1817 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1818 | + (input_line_pointer - name) | |
1819 | + 1); | |
1820 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1821 | name = alc; | |
1822 | } | |
1823 | } | |
1824 | ||
1825 | sym = symbol_find_or_make (name); | |
1826 | *input_line_pointer = c; | |
1827 | if (alc != NULL) | |
1828 | free (alc); | |
1829 | ||
1830 | if (*input_line_pointer != ',') | |
1831 | align = 0; | |
1832 | else | |
1833 | { | |
1834 | ++input_line_pointer; | |
1835 | align = get_absolute_expression (); | |
1836 | } | |
1837 | ||
041ff4dd | 1838 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1839 | { |
0e389e77 | 1840 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1841 | ignore_rest_of_line (); |
1842 | mri_comment_end (stop, stopc); | |
1843 | return; | |
1844 | } | |
1845 | ||
1846 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1847 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1848 | mri_common_symbol = sym; |
1849 | ||
1850 | #ifdef S_SET_ALIGN | |
1851 | if (align != 0) | |
1852 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1853 | #else |
1854 | (void) align; | |
252b5132 RH |
1855 | #endif |
1856 | ||
1857 | if (line_label != NULL) | |
1858 | { | |
2b47531b ILT |
1859 | expressionS exp; |
1860 | exp.X_op = O_symbol; | |
1861 | exp.X_add_symbol = sym; | |
1862 | exp.X_add_number = 0; | |
1863 | symbol_set_value_expression (line_label, &exp); | |
1864 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1865 | S_SET_SEGMENT (line_label, expr_section); |
1866 | } | |
1867 | ||
1868 | /* FIXME: We just ignore the small argument, which distinguishes | |
1869 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1870 | ||
1871 | /* Ignore the type and hptype. */ | |
1872 | if (*input_line_pointer == ',') | |
1873 | input_line_pointer += 2; | |
1874 | if (*input_line_pointer == ',') | |
1875 | input_line_pointer += 2; | |
1876 | ||
1877 | demand_empty_rest_of_line (); | |
1878 | ||
1879 | mri_comment_end (stop, stopc); | |
1880 | } | |
1881 | ||
1882 | void | |
39e6acbd | 1883 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1884 | { |
1885 | segT section; | |
3d540e93 | 1886 | int temp; |
252b5132 RH |
1887 | |
1888 | temp = get_absolute_expression (); | |
1889 | if (flag_readonly_data_in_text) | |
1890 | { | |
1891 | section = text_section; | |
1892 | temp += 1000; | |
1893 | } | |
1894 | else | |
1895 | section = data_section; | |
1896 | ||
1897 | subseg_set (section, (subsegT) temp); | |
1898 | ||
252b5132 RH |
1899 | demand_empty_rest_of_line (); |
1900 | } | |
1901 | ||
1902 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1903 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1904 | file name. This default definition may be overridden by the object | |
1905 | or CPU specific pseudo-ops. This function is also the default | |
1906 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1907 | .file. */ | |
1908 | ||
ecb4347a | 1909 | void |
f17c130b | 1910 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1911 | { |
1912 | #ifdef LISTING | |
1913 | if (listing) | |
1914 | listing_source_file (file); | |
1915 | #endif | |
1916 | register_dependency (file); | |
1917 | #ifdef obj_app_file | |
c04f5787 | 1918 | obj_app_file (file, appfile); |
ecb4347a DJ |
1919 | #endif |
1920 | } | |
1921 | ||
041ff4dd | 1922 | void |
39e6acbd | 1923 | s_app_file (int appfile) |
252b5132 | 1924 | { |
3d540e93 | 1925 | char *s; |
252b5132 RH |
1926 | int length; |
1927 | ||
041ff4dd | 1928 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1929 | if ((s = demand_copy_string (&length)) != 0) |
1930 | { | |
252b5132 | 1931 | int may_omit |
93e914b2 | 1932 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
1933 | |
1934 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1935 | backquote. */ |
252b5132 RH |
1936 | if (flag_m68k_mri |
1937 | && *input_line_pointer == '\'' | |
1938 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1939 | ++input_line_pointer; | |
1940 | ||
1941 | demand_empty_rest_of_line (); | |
041ff4dd | 1942 | if (!may_omit) |
c04f5787 | 1943 | s_app_file_string (s, appfile); |
252b5132 RH |
1944 | } |
1945 | } | |
1946 | ||
e9fc6c21 AO |
1947 | static int |
1948 | get_linefile_number (int *flag) | |
1949 | { | |
1950 | SKIP_WHITESPACE (); | |
1951 | ||
1952 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
1953 | return 0; | |
1954 | ||
1955 | *flag = get_absolute_expression (); | |
1956 | ||
1957 | return 1; | |
1958 | } | |
1959 | ||
252b5132 RH |
1960 | /* Handle the .appline pseudo-op. This is automatically generated by |
1961 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1962 | default definition may be overridden by the object or CPU specific | |
1963 | pseudo-ops. */ | |
1964 | ||
1965 | void | |
93e914b2 | 1966 | s_app_line (int appline) |
252b5132 | 1967 | { |
e9fc6c21 | 1968 | char *file = NULL; |
252b5132 RH |
1969 | int l; |
1970 | ||
1971 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
1972 | if (appline) |
1973 | l = get_absolute_expression (); | |
1974 | else if (!get_linefile_number (&l)) | |
1975 | { | |
1976 | ignore_rest_of_line (); | |
1977 | return; | |
1978 | } | |
1979 | ||
1980 | l--; | |
47837f8e NC |
1981 | |
1982 | if (l < -1) | |
252b5132 | 1983 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
1984 | Besides, it's silly. GCC however will generate a line number of |
1985 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
1986 | ||
fa94de6b | 1987 | # 0 "<built-in>" |
47837f8e NC |
1988 | |
1989 | We do not want to barf on this, especially since such files are used | |
1990 | in the GCC and GDB testsuites. So we check for negative line numbers | |
1991 | rather than non-positive line numbers. */ | |
0e389e77 | 1992 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1993 | l + 1); |
252b5132 RH |
1994 | else |
1995 | { | |
93e914b2 | 1996 | int flags = 0; |
93e914b2 AO |
1997 | int length = 0; |
1998 | ||
1999 | if (!appline) | |
2000 | { | |
e9fc6c21 AO |
2001 | SKIP_WHITESPACE (); |
2002 | ||
2003 | if (*input_line_pointer == '"') | |
2004 | file = demand_copy_string (&length); | |
93e914b2 AO |
2005 | |
2006 | if (file) | |
2007 | { | |
2008 | int this_flag; | |
2009 | ||
e9fc6c21 | 2010 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
2011 | switch (this_flag) |
2012 | { | |
2013 | /* From GCC's cpp documentation: | |
2014 | 1: start of a new file. | |
2015 | 2: returning to a file after having included | |
fa94de6b | 2016 | another file. |
93e914b2 AO |
2017 | 3: following text comes from a system header file. |
2018 | 4: following text should be treated as extern "C". | |
2019 | ||
2020 | 4 is nonsensical for the assembler; 3, we don't | |
2021 | care about, so we ignore it just in case a | |
2022 | system header file is included while | |
2023 | preprocessing assembly. So 1 and 2 are all we | |
2024 | care about, and they are mutually incompatible. | |
2025 | new_logical_line_flags() demands this. */ | |
2026 | case 1: | |
2027 | case 2: | |
2028 | if (flags && flags != (1 << this_flag)) | |
2029 | as_warn (_("incompatible flag %i in line directive"), | |
2030 | this_flag); | |
2031 | else | |
2032 | flags |= 1 << this_flag; | |
2033 | break; | |
2034 | ||
2035 | case 3: | |
2036 | case 4: | |
2037 | /* We ignore these. */ | |
2038 | break; | |
2039 | ||
2040 | default: | |
2041 | as_warn (_("unsupported flag %i in line directive"), | |
2042 | this_flag); | |
2043 | break; | |
2044 | } | |
e9fc6c21 AO |
2045 | |
2046 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
2047 | file = 0; | |
93e914b2 AO |
2048 | } |
2049 | } | |
2050 | ||
e9fc6c21 AO |
2051 | if (appline || file) |
2052 | { | |
2053 | new_logical_line_flags (file, l, flags); | |
252b5132 | 2054 | #ifdef LISTING |
e9fc6c21 AO |
2055 | if (listing) |
2056 | listing_source_line (l); | |
252b5132 | 2057 | #endif |
e9fc6c21 | 2058 | } |
252b5132 | 2059 | } |
e9fc6c21 AO |
2060 | if (appline || file) |
2061 | demand_empty_rest_of_line (); | |
2062 | else | |
2063 | ignore_rest_of_line (); | |
252b5132 RH |
2064 | } |
2065 | ||
2066 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
2067 | read_a_source_file. */ | |
2068 | ||
2069 | void | |
39e6acbd | 2070 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2071 | { |
2072 | if (flag_mri) | |
2073 | { | |
2074 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 2075 | but we don't support that. */ |
252b5132 | 2076 | SKIP_WHITESPACE (); |
041ff4dd | 2077 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2078 | && *input_line_pointer != '*' |
2079 | && *input_line_pointer != '!') | |
2080 | as_warn (_("start address not supported")); | |
2081 | } | |
2082 | } | |
2083 | ||
2084 | /* Handle the .err pseudo-op. */ | |
2085 | ||
2086 | void | |
39e6acbd | 2087 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2088 | { |
2089 | as_bad (_(".err encountered")); | |
2090 | demand_empty_rest_of_line (); | |
d190d046 HPN |
2091 | } |
2092 | ||
2093 | /* Handle the .error and .warning pseudo-ops. */ | |
2094 | ||
2095 | void | |
2096 | s_errwarn (int err) | |
2097 | { | |
2098 | int len; | |
2099 | /* The purpose for the conditional assignment is not to | |
2100 | internationalize the directive itself, but that we need a | |
2101 | self-contained message, one that can be passed like the | |
2102 | demand_copy_C_string return value, and with no assumption on the | |
2103 | location of the name of the directive within the message. */ | |
2104 | char *msg | |
2105 | = (err ? _(".error directive invoked in source file") | |
2106 | : _(".warning directive invoked in source file")); | |
2107 | ||
2108 | if (!is_it_end_of_statement ()) | |
2109 | { | |
2110 | if (*input_line_pointer != '\"') | |
2111 | { | |
2112 | as_bad (_("%s argument must be a string"), | |
2113 | err ? ".error" : ".warning"); | |
40a4d956 | 2114 | ignore_rest_of_line (); |
d190d046 HPN |
2115 | return; |
2116 | } | |
2117 | ||
2118 | msg = demand_copy_C_string (&len); | |
2119 | if (msg == NULL) | |
2120 | return; | |
2121 | } | |
2122 | ||
2123 | if (err) | |
2124 | as_bad ("%s", msg); | |
2125 | else | |
2126 | as_warn ("%s", msg); | |
2127 | demand_empty_rest_of_line (); | |
252b5132 RH |
2128 | } |
2129 | ||
2130 | /* Handle the MRI fail pseudo-op. */ | |
2131 | ||
2132 | void | |
39e6acbd | 2133 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2134 | { |
2135 | offsetT temp; | |
2136 | char *stop = NULL; | |
fb25138b | 2137 | char stopc = 0; |
252b5132 RH |
2138 | |
2139 | if (flag_mri) | |
2140 | stop = mri_comment_field (&stopc); | |
2141 | ||
2142 | temp = get_absolute_expression (); | |
2143 | if (temp >= 500) | |
2144 | as_warn (_(".fail %ld encountered"), (long) temp); | |
2145 | else | |
2146 | as_bad (_(".fail %ld encountered"), (long) temp); | |
2147 | ||
2148 | demand_empty_rest_of_line (); | |
2149 | ||
2150 | if (flag_mri) | |
2151 | mri_comment_end (stop, stopc); | |
2152 | } | |
2153 | ||
041ff4dd | 2154 | void |
39e6acbd | 2155 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2156 | { |
2157 | expressionS rep_exp; | |
2158 | long size = 1; | |
3d540e93 | 2159 | long fill = 0; |
252b5132 RH |
2160 | char *p; |
2161 | ||
2162 | #ifdef md_flush_pending_output | |
2163 | md_flush_pending_output (); | |
2164 | #endif | |
2165 | ||
cc3f603a JM |
2166 | #ifdef md_cons_align |
2167 | md_cons_align (1); | |
2168 | #endif | |
2169 | ||
252b5132 RH |
2170 | get_known_segmented_expression (&rep_exp); |
2171 | if (*input_line_pointer == ',') | |
2172 | { | |
2173 | input_line_pointer++; | |
2174 | size = get_absolute_expression (); | |
2175 | if (*input_line_pointer == ',') | |
2176 | { | |
2177 | input_line_pointer++; | |
2178 | fill = get_absolute_expression (); | |
2179 | } | |
2180 | } | |
2181 | ||
2182 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
2183 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
2184 | if (size > BSD_FILL_SIZE_CROCK_8) | |
2185 | { | |
0e389e77 | 2186 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
2187 | size = BSD_FILL_SIZE_CROCK_8; |
2188 | } | |
2189 | if (size < 0) | |
2190 | { | |
0e389e77 | 2191 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
2192 | size = 0; |
2193 | } | |
2194 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
2195 | { | |
2196 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 2197 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
2198 | size = 0; |
2199 | } | |
2200 | ||
2201 | if (size && !need_pass_2) | |
2202 | { | |
2203 | if (rep_exp.X_op == O_constant) | |
2204 | { | |
2205 | p = frag_var (rs_fill, (int) size, (int) size, | |
2206 | (relax_substateT) 0, (symbolS *) 0, | |
2207 | (offsetT) rep_exp.X_add_number, | |
2208 | (char *) 0); | |
2209 | } | |
2210 | else | |
2211 | { | |
2212 | /* We don't have a constant repeat count, so we can't use | |
2213 | rs_fill. We can get the same results out of rs_space, | |
2214 | but its argument is in bytes, so we must multiply the | |
2215 | repeat count by size. */ | |
2216 | ||
2217 | symbolS *rep_sym; | |
2218 | rep_sym = make_expr_symbol (&rep_exp); | |
2219 | if (size != 1) | |
2220 | { | |
2221 | expressionS size_exp; | |
2222 | size_exp.X_op = O_constant; | |
2223 | size_exp.X_add_number = size; | |
2224 | ||
2225 | rep_exp.X_op = O_multiply; | |
2226 | rep_exp.X_add_symbol = rep_sym; | |
2227 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
2228 | rep_exp.X_add_number = 0; | |
2229 | rep_sym = make_expr_symbol (&rep_exp); | |
2230 | } | |
2231 | ||
2232 | p = frag_var (rs_space, (int) size, (int) size, | |
2233 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
2234 | } | |
f0e652b4 | 2235 | |
252b5132 | 2236 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2237 | |
252b5132 | 2238 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2239 | flavoured AS. The following bizarre behaviour is to be |
2240 | compatible with above. I guess they tried to take up to 8 | |
2241 | bytes from a 4-byte expression and they forgot to sign | |
2242 | extend. */ | |
252b5132 RH |
2243 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2244 | md_number_to_chars (p, (valueT) fill, | |
2245 | (size > BSD_FILL_SIZE_CROCK_4 | |
2246 | ? BSD_FILL_SIZE_CROCK_4 | |
2247 | : (int) size)); | |
2248 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2249 | but emits no error message because it seems a legal thing to do. |
2250 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2251 | compiler. */ |
252b5132 RH |
2252 | } |
2253 | demand_empty_rest_of_line (); | |
2254 | } | |
2255 | ||
041ff4dd | 2256 | void |
39e6acbd | 2257 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2258 | { |
2259 | char *name; | |
2260 | int c; | |
2261 | symbolS *symbolP; | |
2262 | char *stop = NULL; | |
fb25138b | 2263 | char stopc = 0; |
252b5132 RH |
2264 | |
2265 | if (flag_mri) | |
2266 | stop = mri_comment_field (&stopc); | |
2267 | ||
2268 | do | |
2269 | { | |
7bfd842d NC |
2270 | if ((name = read_symbol_name ()) == NULL) |
2271 | return; | |
2272 | ||
252b5132 | 2273 | symbolP = symbol_find_or_make (name); |
58b5739a RH |
2274 | S_SET_EXTERNAL (symbolP); |
2275 | ||
252b5132 | 2276 | SKIP_WHITESPACE (); |
58b5739a | 2277 | c = *input_line_pointer; |
252b5132 RH |
2278 | if (c == ',') |
2279 | { | |
2280 | input_line_pointer++; | |
2281 | SKIP_WHITESPACE (); | |
0e389e77 | 2282 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2283 | c = '\n'; |
2284 | } | |
7bfd842d NC |
2285 | |
2286 | free (name); | |
252b5132 RH |
2287 | } |
2288 | while (c == ','); | |
2289 | ||
2290 | demand_empty_rest_of_line (); | |
2291 | ||
2292 | if (flag_mri) | |
2293 | mri_comment_end (stop, stopc); | |
2294 | } | |
2295 | ||
2296 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2297 | ||
2298 | void | |
39e6acbd | 2299 | s_irp (int irpc) |
252b5132 | 2300 | { |
40a4d956 | 2301 | char *file, *eol; |
252b5132 RH |
2302 | unsigned int line; |
2303 | sb s; | |
2304 | const char *err; | |
2305 | sb out; | |
2306 | ||
2307 | as_where (&file, &line); | |
2308 | ||
40a4d956 | 2309 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2310 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2311 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2312 | input_line_pointer = eol; | |
252b5132 RH |
2313 | |
2314 | sb_new (&out); | |
2315 | ||
7592cfd7 | 2316 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2317 | if (err != NULL) |
2318 | as_bad_where (file, line, "%s", err); | |
2319 | ||
2320 | sb_kill (&s); | |
2321 | ||
9f10757c | 2322 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2323 | sb_kill (&out); |
2324 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2325 | } | |
2326 | ||
2327 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2328 | the section to only be linked once. However, this is not supported | |
2329 | by most object file formats. This takes an optional argument, | |
2330 | which is what to do about duplicates. */ | |
2331 | ||
2332 | void | |
39e6acbd | 2333 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2334 | { |
2335 | enum linkonce_type type; | |
2336 | ||
2337 | SKIP_WHITESPACE (); | |
2338 | ||
2339 | type = LINKONCE_DISCARD; | |
2340 | ||
041ff4dd | 2341 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2342 | { |
2343 | char *s; | |
2344 | char c; | |
2345 | ||
2346 | s = input_line_pointer; | |
2347 | c = get_symbol_end (); | |
2348 | if (strcasecmp (s, "discard") == 0) | |
2349 | type = LINKONCE_DISCARD; | |
2350 | else if (strcasecmp (s, "one_only") == 0) | |
2351 | type = LINKONCE_ONE_ONLY; | |
2352 | else if (strcasecmp (s, "same_size") == 0) | |
2353 | type = LINKONCE_SAME_SIZE; | |
2354 | else if (strcasecmp (s, "same_contents") == 0) | |
2355 | type = LINKONCE_SAME_CONTENTS; | |
2356 | else | |
2357 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2358 | ||
2359 | *input_line_pointer = c; | |
2360 | } | |
2361 | ||
2362 | #ifdef obj_handle_link_once | |
2363 | obj_handle_link_once (type); | |
2364 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2365 | { |
2366 | flagword flags; | |
2367 | ||
2368 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2369 | as_warn (_(".linkonce is not supported for this object file format")); | |
2370 | ||
2371 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2372 | flags |= SEC_LINK_ONCE; | |
2373 | switch (type) | |
2374 | { | |
2375 | default: | |
2376 | abort (); | |
2377 | case LINKONCE_DISCARD: | |
2378 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2379 | break; | |
2380 | case LINKONCE_ONE_ONLY: | |
2381 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2382 | break; | |
2383 | case LINKONCE_SAME_SIZE: | |
2384 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2385 | break; | |
2386 | case LINKONCE_SAME_CONTENTS: | |
2387 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2388 | break; | |
2389 | } | |
041ff4dd | 2390 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2391 | as_bad (_("bfd_set_section_flags: %s"), |
2392 | bfd_errmsg (bfd_get_error ())); | |
2393 | } | |
252b5132 RH |
2394 | #endif /* ! defined (obj_handle_link_once) */ |
2395 | ||
2396 | demand_empty_rest_of_line (); | |
2397 | } | |
2398 | ||
e13bab5a AM |
2399 | void |
2400 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2401 | { |
e13bab5a | 2402 | char *pfrag; |
252b5132 RH |
2403 | segT current_seg = now_seg; |
2404 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2405 | segT bss_seg = bss_section; |
2406 | ||
252b5132 RH |
2407 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2408 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2409 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2410 | { | |
2411 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2412 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2413 | { |
2414 | bss_seg = subseg_new (".sbss", 1); | |
2415 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2416 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2417 | as_warn (_("error setting flags for \".sbss\": %s"), |
2418 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2419 | } |
2420 | } | |
2421 | #endif | |
e13bab5a | 2422 | subseg_set (bss_seg, 1); |
8684e216 | 2423 | |
e13bab5a | 2424 | if (align) |
041ff4dd | 2425 | { |
e13bab5a AM |
2426 | record_alignment (bss_seg, align); |
2427 | frag_align (align, 0, 0); | |
041ff4dd | 2428 | } |
252b5132 | 2429 | |
e13bab5a AM |
2430 | /* Detach from old frag. */ |
2431 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2432 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2433 | |
e13bab5a AM |
2434 | symbol_set_frag (symbolP, frag_now); |
2435 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2436 | *pfrag = 0; | |
f0e652b4 | 2437 | |
e13bab5a AM |
2438 | #ifdef S_SET_SIZE |
2439 | S_SET_SIZE (symbolP, size); | |
2440 | #endif | |
2441 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2442 | |
e13bab5a AM |
2443 | #ifdef OBJ_COFF |
2444 | /* The symbol may already have been created with a preceding | |
2445 | ".globl" directive -- be careful not to step on storage class | |
2446 | in that case. Otherwise, set it to static. */ | |
2447 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2448 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2449 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2450 | |
e13bab5a AM |
2451 | subseg_set (current_seg, current_subseg); |
2452 | } | |
f0e652b4 | 2453 | |
e13bab5a AM |
2454 | offsetT |
2455 | parse_align (int align_bytes) | |
2456 | { | |
2457 | expressionS exp; | |
2458 | addressT align; | |
252b5132 | 2459 | |
e13bab5a AM |
2460 | SKIP_WHITESPACE (); |
2461 | if (*input_line_pointer != ',') | |
2462 | { | |
2463 | no_align: | |
2464 | as_bad (_("expected alignment after size")); | |
2465 | ignore_rest_of_line (); | |
2466 | return -1; | |
2467 | } | |
f0e652b4 | 2468 | |
e13bab5a AM |
2469 | input_line_pointer++; |
2470 | SKIP_WHITESPACE (); | |
f0e652b4 | 2471 | |
e13bab5a AM |
2472 | align = get_absolute_expr (&exp); |
2473 | if (exp.X_op == O_absent) | |
2474 | goto no_align; | |
2475 | ||
2476 | if (!exp.X_unsigned) | |
2477 | { | |
2478 | as_warn (_("alignment negative; 0 assumed")); | |
2479 | align = 0; | |
041ff4dd | 2480 | } |
e13bab5a AM |
2481 | |
2482 | if (align_bytes && align != 0) | |
252b5132 | 2483 | { |
e13bab5a AM |
2484 | /* convert to a power of 2 alignment */ |
2485 | unsigned int alignp2 = 0; | |
2486 | while ((align & 1) == 0) | |
2487 | align >>= 1, ++alignp2; | |
2488 | if (align != 1) | |
252b5132 | 2489 | { |
e13bab5a AM |
2490 | as_bad (_("alignment not a power of 2")); |
2491 | ignore_rest_of_line (); | |
2492 | return -1; | |
252b5132 | 2493 | } |
e13bab5a | 2494 | align = alignp2; |
252b5132 | 2495 | } |
e13bab5a AM |
2496 | return align; |
2497 | } | |
252b5132 | 2498 | |
e13bab5a AM |
2499 | /* Called from s_comm_internal after symbol name and size have been |
2500 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2501 | 1 if this was a ".bss" directive which has a 3rd argument | |
2502 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2503 | with alignment in bytes. */ | |
252b5132 | 2504 | |
13c56984 | 2505 | symbolS * |
e13bab5a AM |
2506 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2507 | { | |
2508 | addressT align = 0; | |
252b5132 | 2509 | |
e13bab5a AM |
2510 | if (needs_align) |
2511 | { | |
2512 | align = parse_align (needs_align - 1); | |
2513 | if (align == (addressT) -1) | |
2514 | return NULL; | |
252b5132 RH |
2515 | } |
2516 | else | |
e13bab5a AM |
2517 | /* Assume some objects may require alignment on some systems. */ |
2518 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2519 | |
e13bab5a AM |
2520 | bss_alloc (symbolP, size, align); |
2521 | return symbolP; | |
041ff4dd | 2522 | } |
252b5132 RH |
2523 | |
2524 | void | |
39e6acbd | 2525 | s_lcomm (int needs_align) |
252b5132 | 2526 | { |
e13bab5a | 2527 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2528 | } |
2529 | ||
041ff4dd | 2530 | void |
39e6acbd | 2531 | s_lcomm_bytes (int needs_align) |
252b5132 | 2532 | { |
e13bab5a | 2533 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2534 | } |
2535 | ||
041ff4dd | 2536 | void |
39e6acbd | 2537 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2538 | { |
3d540e93 | 2539 | char *name; |
252b5132 | 2540 | expressionS exp; |
3d540e93 | 2541 | symbolS *symbolP; |
252b5132 | 2542 | |
041ff4dd | 2543 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
7bfd842d NC |
2544 | if ((name = read_symbol_name ()) == NULL) |
2545 | return; | |
f0e652b4 | 2546 | |
252b5132 RH |
2547 | if (*input_line_pointer != ',') |
2548 | { | |
0e389e77 | 2549 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 2550 | goto err_out; |
252b5132 | 2551 | } |
f0e652b4 | 2552 | |
252b5132 | 2553 | input_line_pointer++; |
9497f5ac | 2554 | expression_and_evaluate (&exp); |
f0e652b4 | 2555 | |
252b5132 RH |
2556 | if (exp.X_op != O_constant |
2557 | && exp.X_op != O_register) | |
2558 | { | |
2559 | as_bad (_("bad expression")); | |
7bfd842d | 2560 | goto err_out; |
252b5132 | 2561 | } |
f0e652b4 | 2562 | |
252b5132 RH |
2563 | symbolP = symbol_find_or_make (name); |
2564 | ||
86ebace2 | 2565 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2566 | { |
2567 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2568 | keep the "external" bit. */ |
252b5132 RH |
2569 | S_SET_SEGMENT (symbolP, |
2570 | (exp.X_op == O_constant | |
2571 | ? absolute_section | |
2572 | : reg_section)); | |
2573 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2574 | } | |
2575 | else | |
2576 | { | |
0e389e77 | 2577 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2578 | } |
f0e652b4 | 2579 | |
252b5132 | 2580 | demand_empty_rest_of_line (); |
7bfd842d NC |
2581 | free (name); |
2582 | return; | |
2583 | ||
2584 | err_out: | |
2585 | ignore_rest_of_line (); | |
2586 | free (name); | |
2587 | return; | |
041ff4dd | 2588 | } |
252b5132 | 2589 | |
0822d075 NC |
2590 | /* Read a line into an sb. Returns the character that ended the line |
2591 | or zero if there are no more lines. */ | |
252b5132 RH |
2592 | |
2593 | static int | |
7592cfd7 | 2594 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2595 | { |
40a4d956 | 2596 | char *eol; |
252b5132 RH |
2597 | |
2598 | if (input_line_pointer[-1] == '\n') | |
2599 | bump_line_counters (); | |
2600 | ||
2601 | if (input_line_pointer >= buffer_limit) | |
2602 | { | |
2603 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2604 | if (buffer_limit == 0) | |
2605 | return 0; | |
2606 | } | |
2607 | ||
7592cfd7 | 2608 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2609 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2610 | input_line_pointer = eol; | |
f0e652b4 | 2611 | |
0822d075 NC |
2612 | /* Don't skip multiple end-of-line characters, because that breaks support |
2613 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2614 | characters but isn't. Instead just skip one end of line character and | |
2615 | return the character skipped so that the caller can re-insert it if | |
2616 | necessary. */ | |
40a4d956 | 2617 | return *input_line_pointer++; |
252b5132 RH |
2618 | } |
2619 | ||
39a45edc | 2620 | static size_t |
7592cfd7 NC |
2621 | get_non_macro_line_sb (sb *line) |
2622 | { | |
2623 | return get_line_sb (line, 0); | |
2624 | } | |
2625 | ||
39a45edc | 2626 | static size_t |
7592cfd7 NC |
2627 | get_macro_line_sb (sb *line) |
2628 | { | |
2629 | return get_line_sb (line, 1); | |
2630 | } | |
2631 | ||
fea17916 | 2632 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2633 | |
2634 | void | |
39e6acbd | 2635 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2636 | { |
40a4d956 | 2637 | char *file, *eol; |
252b5132 RH |
2638 | unsigned int line; |
2639 | sb s; | |
252b5132 RH |
2640 | const char *err; |
2641 | const char *name; | |
2642 | ||
2643 | as_where (&file, &line); | |
2644 | ||
40a4d956 | 2645 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2646 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2647 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2648 | input_line_pointer = eol; | |
252b5132 | 2649 | |
252b5132 | 2650 | if (line_label != NULL) |
360e86f1 JB |
2651 | { |
2652 | sb label; | |
d2ae702c | 2653 | size_t len; |
252b5132 | 2654 | |
d2ae702c L |
2655 | name = S_GET_NAME (line_label); |
2656 | len = strlen (name); | |
2657 | sb_build (&label, len); | |
2658 | sb_add_buffer (&label, name, len); | |
7592cfd7 | 2659 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2660 | sb_kill (&label); |
2661 | } | |
2662 | else | |
7592cfd7 | 2663 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2664 | if (err != NULL) |
02ddf156 | 2665 | as_bad_where (file, line, err, name); |
252b5132 RH |
2666 | else |
2667 | { | |
2668 | if (line_label != NULL) | |
2669 | { | |
5e75c3ab | 2670 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2671 | S_SET_VALUE (line_label, 0); |
2b47531b | 2672 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2673 | } |
2674 | ||
abd63a32 | 2675 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2676 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2677 | || (!flag_m68k_mri |
252b5132 RH |
2678 | && *name == '.' |
2679 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2680 | as_warn_where (file, |
2681 | line, | |
2682 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2683 | name); |
2684 | } | |
2685 | ||
2686 | sb_kill (&s); | |
2687 | } | |
2688 | ||
2689 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2690 | expansion. */ | |
2691 | ||
2692 | void | |
39e6acbd | 2693 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2694 | { |
5808f4a6 NC |
2695 | if (macro_nest) |
2696 | { | |
2697 | cond_exit_macro (macro_nest); | |
2698 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2699 | } | |
2700 | else | |
2701 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2702 | } |
2703 | ||
2704 | /* Switch in and out of MRI mode. */ | |
2705 | ||
2706 | void | |
39e6acbd | 2707 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2708 | { |
3d540e93 NC |
2709 | int on; |
2710 | #ifdef MRI_MODE_CHANGE | |
2711 | int old_flag; | |
2712 | #endif | |
252b5132 RH |
2713 | |
2714 | on = get_absolute_expression (); | |
3d540e93 | 2715 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2716 | old_flag = flag_mri; |
3d540e93 | 2717 | #endif |
252b5132 RH |
2718 | if (on != 0) |
2719 | { | |
2720 | flag_mri = 1; | |
2721 | #ifdef TC_M68K | |
2722 | flag_m68k_mri = 1; | |
2723 | #endif | |
2724 | macro_mri_mode (1); | |
2725 | } | |
2726 | else | |
2727 | { | |
2728 | flag_mri = 0; | |
abd63a32 | 2729 | #ifdef TC_M68K |
252b5132 | 2730 | flag_m68k_mri = 0; |
abd63a32 | 2731 | #endif |
252b5132 RH |
2732 | macro_mri_mode (0); |
2733 | } | |
2734 | ||
2735 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2736 | update the operator rankings. */ | |
2737 | expr_set_precedence (); | |
2738 | ||
2739 | #ifdef MRI_MODE_CHANGE | |
2740 | if (on != old_flag) | |
2741 | MRI_MODE_CHANGE (on); | |
2742 | #endif | |
2743 | ||
2744 | demand_empty_rest_of_line (); | |
2745 | } | |
2746 | ||
2747 | /* Handle changing the location counter. */ | |
2748 | ||
2749 | static void | |
39e6acbd | 2750 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 | 2751 | { |
259af69e AM |
2752 | if (segment != now_seg |
2753 | && segment != absolute_section | |
2754 | && segment != expr_section) | |
0e389e77 | 2755 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2756 | |
2757 | if (now_seg == absolute_section) | |
2758 | { | |
2759 | if (fill != 0) | |
2760 | as_warn (_("ignoring fill value in absolute section")); | |
2761 | if (exp->X_op != O_constant) | |
2762 | { | |
2763 | as_bad (_("only constant offsets supported in absolute section")); | |
2764 | exp->X_add_number = 0; | |
2765 | } | |
2766 | abs_section_offset = exp->X_add_number; | |
2767 | } | |
2768 | else | |
2769 | { | |
2770 | char *p; | |
2289f85d AM |
2771 | symbolS *sym = exp->X_add_symbol; |
2772 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2773 | |
2289f85d AM |
2774 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2775 | { | |
2776 | /* Handle complex expressions. */ | |
2777 | sym = make_expr_symbol (exp); | |
2778 | off = 0; | |
2779 | } | |
2780 | ||
2781 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2782 | *p = fill; |
2783 | } | |
2784 | } | |
2785 | ||
041ff4dd | 2786 | void |
39e6acbd | 2787 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2788 | { |
3d540e93 | 2789 | segT segment; |
252b5132 | 2790 | expressionS exp; |
3d540e93 | 2791 | long temp_fill; |
252b5132 RH |
2792 | |
2793 | #ifdef md_flush_pending_output | |
2794 | md_flush_pending_output (); | |
2795 | #endif | |
2796 | ||
2797 | /* The m68k MRI assembler has a different meaning for .org. It | |
2798 | means to create an absolute section at a given address. We can't | |
2799 | support that--use a linker script instead. */ | |
2800 | if (flag_m68k_mri) | |
2801 | { | |
2802 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2803 | ignore_rest_of_line (); | |
2804 | return; | |
2805 | } | |
2806 | ||
2807 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2808 | thing as a sub-segment-relative origin. Any absolute origin is | |
2809 | given a warning, then assumed to be segment-relative. Any | |
2810 | segmented origin expression ("foo+42") had better be in the right | |
2811 | segment or the .org is ignored. | |
2812 | ||
2813 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2814 | we never know sub-segment sizes when we are reading code. BSD | |
2815 | will crash trying to emit negative numbers of filler bytes in | |
2816 | certain .orgs. We don't crash, but see as-write for that code. | |
2817 | ||
2818 | Don't make frag if need_pass_2==1. */ | |
2819 | segment = get_known_segmented_expression (&exp); | |
2820 | if (*input_line_pointer == ',') | |
2821 | { | |
2822 | input_line_pointer++; | |
2823 | temp_fill = get_absolute_expression (); | |
2824 | } | |
2825 | else | |
2826 | temp_fill = 0; | |
2827 | ||
2828 | if (!need_pass_2) | |
2829 | do_org (segment, &exp, temp_fill); | |
2830 | ||
2831 | demand_empty_rest_of_line (); | |
041ff4dd | 2832 | } |
252b5132 RH |
2833 | |
2834 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2835 | called by the obj-format routine which handles section changing | |
2836 | when in MRI mode. It will create a new section, and return it. It | |
2837 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2838 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2839 | |
2840 | void | |
39e6acbd | 2841 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2842 | { |
2843 | #ifdef TC_M68K | |
2844 | ||
2845 | char *name; | |
2846 | char c; | |
2847 | segT seg; | |
2848 | ||
2849 | SKIP_WHITESPACE (); | |
041ff4dd | 2850 | |
252b5132 | 2851 | name = input_line_pointer; |
3882b010 | 2852 | if (!ISDIGIT (*name)) |
252b5132 RH |
2853 | c = get_symbol_end (); |
2854 | else | |
2855 | { | |
2856 | do | |
2857 | { | |
2858 | ++input_line_pointer; | |
2859 | } | |
3882b010 | 2860 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2861 | |
252b5132 RH |
2862 | c = *input_line_pointer; |
2863 | *input_line_pointer = '\0'; | |
2864 | } | |
2865 | ||
2866 | name = xstrdup (name); | |
2867 | ||
2868 | *input_line_pointer = c; | |
2869 | ||
2870 | seg = subseg_new (name, 0); | |
2871 | ||
2872 | if (*input_line_pointer == ',') | |
2873 | { | |
2874 | int align; | |
2875 | ||
2876 | ++input_line_pointer; | |
2877 | align = get_absolute_expression (); | |
2878 | record_alignment (seg, align); | |
2879 | } | |
2880 | ||
2881 | *type = 'C'; | |
2882 | if (*input_line_pointer == ',') | |
2883 | { | |
2884 | c = *++input_line_pointer; | |
3882b010 | 2885 | c = TOUPPER (c); |
252b5132 RH |
2886 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2887 | *type = c; | |
2888 | else | |
2889 | as_bad (_("unrecognized section type")); | |
2890 | ++input_line_pointer; | |
2891 | ||
252b5132 RH |
2892 | { |
2893 | flagword flags; | |
2894 | ||
2895 | flags = SEC_NO_FLAGS; | |
2896 | if (*type == 'C') | |
2897 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2898 | else if (*type == 'D' || *type == 'M') | |
2899 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2900 | else if (*type == 'R') | |
2901 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2902 | if (flags != SEC_NO_FLAGS) | |
2903 | { | |
041ff4dd | 2904 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2905 | as_warn (_("error setting flags for \"%s\": %s"), |
2906 | bfd_section_name (stdoutput, seg), | |
2907 | bfd_errmsg (bfd_get_error ())); | |
2908 | } | |
2909 | } | |
252b5132 RH |
2910 | } |
2911 | ||
2912 | /* Ignore the HP type. */ | |
2913 | if (*input_line_pointer == ',') | |
2914 | input_line_pointer += 2; | |
2915 | ||
2916 | demand_empty_rest_of_line (); | |
2917 | ||
2918 | #else /* ! TC_M68K */ | |
2919 | #ifdef TC_I960 | |
2920 | ||
2921 | char *name; | |
2922 | char c; | |
2923 | segT seg; | |
2924 | ||
2925 | SKIP_WHITESPACE (); | |
2926 | ||
2927 | name = input_line_pointer; | |
2928 | c = get_symbol_end (); | |
2929 | ||
2930 | name = xstrdup (name); | |
2931 | ||
2932 | *input_line_pointer = c; | |
2933 | ||
2934 | seg = subseg_new (name, 0); | |
2935 | ||
2936 | if (*input_line_pointer != ',') | |
2937 | *type = 'C'; | |
2938 | else | |
2939 | { | |
2940 | char *sectype; | |
2941 | ||
2942 | ++input_line_pointer; | |
2943 | SKIP_WHITESPACE (); | |
2944 | sectype = input_line_pointer; | |
2945 | c = get_symbol_end (); | |
2946 | if (*sectype == '\0') | |
2947 | *type = 'C'; | |
2948 | else if (strcasecmp (sectype, "text") == 0) | |
2949 | *type = 'C'; | |
2950 | else if (strcasecmp (sectype, "data") == 0) | |
2951 | *type = 'D'; | |
2952 | else if (strcasecmp (sectype, "romdata") == 0) | |
2953 | *type = 'R'; | |
2954 | else | |
2955 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2956 | *input_line_pointer = c; | |
2957 | } | |
2958 | ||
2959 | if (*input_line_pointer == ',') | |
2960 | { | |
2961 | char *seccmd; | |
2962 | ||
2963 | ++input_line_pointer; | |
2964 | SKIP_WHITESPACE (); | |
2965 | seccmd = input_line_pointer; | |
2966 | c = get_symbol_end (); | |
2967 | if (strcasecmp (seccmd, "absolute") == 0) | |
2968 | { | |
2969 | as_bad (_("absolute sections are not supported")); | |
2970 | *input_line_pointer = c; | |
2971 | ignore_rest_of_line (); | |
2972 | return; | |
2973 | } | |
2974 | else if (strcasecmp (seccmd, "align") == 0) | |
2975 | { | |
2976 | int align; | |
2977 | ||
2978 | *input_line_pointer = c; | |
2979 | align = get_absolute_expression (); | |
2980 | record_alignment (seg, align); | |
2981 | } | |
2982 | else | |
2983 | { | |
2984 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2985 | *input_line_pointer = c; | |
2986 | } | |
2987 | } | |
2988 | ||
041ff4dd | 2989 | demand_empty_rest_of_line (); |
252b5132 RH |
2990 | |
2991 | #else /* ! TC_I960 */ | |
2992 | /* The MRI assembler seems to use different forms of .sect for | |
2993 | different targets. */ | |
2994 | as_bad ("MRI mode not supported for this target"); | |
2995 | ignore_rest_of_line (); | |
2996 | #endif /* ! TC_I960 */ | |
2997 | #endif /* ! TC_M68K */ | |
2998 | } | |
2999 | ||
3000 | /* Handle the .print pseudo-op. */ | |
3001 | ||
3002 | void | |
39e6acbd | 3003 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3004 | { |
3005 | char *s; | |
3006 | int len; | |
3007 | ||
3008 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
3009 | if (s != NULL) |
3010 | printf ("%s\n", s); | |
252b5132 RH |
3011 | demand_empty_rest_of_line (); |
3012 | } | |
3013 | ||
3014 | /* Handle the .purgem pseudo-op. */ | |
3015 | ||
3016 | void | |
39e6acbd | 3017 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3018 | { |
3019 | if (is_it_end_of_statement ()) | |
3020 | { | |
3021 | demand_empty_rest_of_line (); | |
3022 | return; | |
3023 | } | |
3024 | ||
3025 | do | |
3026 | { | |
3027 | char *name; | |
3028 | char c; | |
3029 | ||
3030 | SKIP_WHITESPACE (); | |
3031 | name = input_line_pointer; | |
3032 | c = get_symbol_end (); | |
3033 | delete_macro (name); | |
3034 | *input_line_pointer = c; | |
3035 | SKIP_WHITESPACE (); | |
3036 | } | |
3037 | while (*input_line_pointer++ == ','); | |
3038 | ||
3039 | --input_line_pointer; | |
3040 | demand_empty_rest_of_line (); | |
3041 | } | |
3042 | ||
057f53c1 | 3043 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 3044 | |
057f53c1 JB |
3045 | static void |
3046 | s_bad_end (int endr) | |
7f28ab9d | 3047 | { |
cc643b88 | 3048 | as_warn (_(".end%c encountered without preceding %s"), |
057f53c1 JB |
3049 | endr ? 'r' : 'm', |
3050 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
3051 | demand_empty_rest_of_line (); |
3052 | } | |
3053 | ||
3054 | /* Handle the .rept pseudo-op. */ | |
3055 | ||
252b5132 | 3056 | void |
39e6acbd | 3057 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3058 | { |
3059 | int count; | |
252b5132 RH |
3060 | |
3061 | count = get_absolute_expression (); | |
3062 | ||
041ff4dd | 3063 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
3064 | } |
3065 | ||
3066 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 3067 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
3068 | |
3069 | void | |
39e6acbd | 3070 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
3071 | { |
3072 | sb one; | |
3073 | sb many; | |
3074 | ||
252b5132 | 3075 | sb_new (&one); |
7592cfd7 | 3076 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 3077 | { |
6dc19fc4 | 3078 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
3079 | return; |
3080 | } | |
3081 | ||
d2ae702c | 3082 | sb_build (&many, count * one.len); |
252b5132 RH |
3083 | while (count-- > 0) |
3084 | sb_add_sb (&many, &one); | |
3085 | ||
3086 | sb_kill (&one); | |
3087 | ||
9f10757c | 3088 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
3089 | sb_kill (&many); |
3090 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3091 | } | |
3092 | ||
c7927a3c NC |
3093 | /* Like do_repeat except that any text matching EXPANDER in the |
3094 | block is replaced by the itteration count. */ | |
3095 | ||
3096 | void | |
3097 | do_repeat_with_expander (int count, | |
3098 | const char * start, | |
3099 | const char * end, | |
3100 | const char * expander) | |
3101 | { | |
3102 | sb one; | |
3103 | sb many; | |
3104 | ||
3105 | sb_new (&one); | |
3106 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3107 | { | |
3108 | as_bad (_("%s without %s"), start, end); | |
3109 | return; | |
3110 | } | |
3111 | ||
3112 | sb_new (&many); | |
3113 | ||
3114 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3115 | { | |
3116 | while (count -- > 0) | |
3117 | { | |
3118 | int len; | |
3119 | char * sub; | |
3120 | sb processed; | |
3121 | ||
d2ae702c | 3122 | sb_build (& processed, one.len); |
c7927a3c NC |
3123 | sb_add_sb (& processed, & one); |
3124 | sub = strstr (processed.ptr, expander); | |
3125 | len = sprintf (sub, "%d", count); | |
3126 | gas_assert (len < 8); | |
3127 | strcpy (sub + len, sub + 8); | |
3128 | processed.len -= (8 - len); | |
3129 | sb_add_sb (& many, & processed); | |
3130 | sb_kill (& processed); | |
3131 | } | |
3132 | } | |
3133 | else | |
3134 | while (count-- > 0) | |
3135 | sb_add_sb (&many, &one); | |
3136 | ||
3137 | sb_kill (&one); | |
3138 | ||
3139 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3140 | sb_kill (&many); | |
3141 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3142 | } | |
3143 | ||
6dc19fc4 TW |
3144 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3145 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3146 | are properly nested. |
6dc19fc4 TW |
3147 | |
3148 | This function makes it easier to implement a premature "break" out of the | |
3149 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3150 | such as line substitutions. */ |
6dc19fc4 TW |
3151 | |
3152 | void | |
39e6acbd | 3153 | end_repeat (int extra) |
6dc19fc4 TW |
3154 | { |
3155 | cond_exit_macro (macro_nest); | |
3156 | while (extra-- >= 0) | |
3157 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3158 | } | |
3159 | ||
be95a9c1 | 3160 | static void |
9497f5ac | 3161 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3162 | { |
3163 | symbolS *symbolP; | |
3164 | ||
3165 | if (name[0] == '.' && name[1] == '\0') | |
3166 | { | |
3167 | /* Turn '. = mumble' into a .org mumble. */ | |
3168 | segT segment; | |
3169 | expressionS exp; | |
3170 | ||
3171 | segment = get_known_segmented_expression (&exp); | |
3172 | ||
3173 | if (!need_pass_2) | |
3174 | do_org (segment, &exp, 0); | |
3175 | ||
3176 | return; | |
3177 | } | |
3178 | ||
3179 | if ((symbolP = symbol_find (name)) == NULL | |
3180 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3181 | { | |
3182 | symbolP = symbol_find_or_make (name); | |
3183 | #ifndef NO_LISTING | |
3184 | /* When doing symbol listings, play games with dummy fragments living | |
3185 | outside the normal fragment chain to record the file and line info | |
3186 | for this symbol. */ | |
3187 | if (listing & LISTING_SYMBOLS) | |
3188 | { | |
3189 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 3190 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
3191 | dummy_frag->line = listing_tail; |
3192 | dummy_frag->fr_symbol = symbolP; | |
3193 | symbol_set_frag (symbolP, dummy_frag); | |
3194 | } | |
3195 | #endif | |
76bd66cf | 3196 | #if defined (OBJ_COFF) && !defined (TE_PE) |
31d20a21 AM |
3197 | /* "set" symbols are local unless otherwise specified. */ |
3198 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3199 | #endif |
3200 | } | |
3201 | ||
6a2b6326 | 3202 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac | 3203 | { |
9497f5ac | 3204 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) |
6885131b | 3205 | && !S_CAN_BE_REDEFINED (symbolP)) |
9497f5ac NC |
3206 | { |
3207 | as_bad (_("symbol `%s' is already defined"), name); | |
3208 | symbolP = symbol_clone (symbolP, 0); | |
3209 | } | |
3210 | /* If the symbol is volatile, copy the symbol and replace the | |
3211 | original with the copy, so that previous uses of the symbol will | |
3212 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3213 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3214 | symbolP = symbol_clone (symbolP, 1); |
3215 | } | |
3216 | ||
3217 | if (mode == 0) | |
3218 | S_SET_VOLATILE (symbolP); | |
3219 | else if (mode < 0) | |
3220 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3221 | |
3222 | pseudo_set (symbolP); | |
be95a9c1 AM |
3223 | } |
3224 | ||
9497f5ac NC |
3225 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3226 | then this is .equiv, and it is an error if the symbol is already | |
3227 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3228 | reference. */ | |
252b5132 | 3229 | |
041ff4dd | 3230 | void |
39e6acbd | 3231 | s_set (int equiv) |
252b5132 | 3232 | { |
be95a9c1 | 3233 | char *name; |
252b5132 | 3234 | |
041ff4dd NC |
3235 | /* Especial apologies for the random logic: |
3236 | this just grew, and could be parsed much more simply! | |
3237 | Dean in haste. */ | |
7bfd842d NC |
3238 | if ((name = read_symbol_name ()) == NULL) |
3239 | return; | |
252b5132 RH |
3240 | |
3241 | if (*input_line_pointer != ',') | |
3242 | { | |
0e389e77 | 3243 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 | 3244 | ignore_rest_of_line (); |
7bfd842d | 3245 | free (name); |
252b5132 RH |
3246 | return; |
3247 | } | |
3248 | ||
3249 | input_line_pointer++; | |
be95a9c1 | 3250 | assign_symbol (name, equiv); |
31d20a21 | 3251 | demand_empty_rest_of_line (); |
7bfd842d | 3252 | free (name); |
041ff4dd | 3253 | } |
252b5132 | 3254 | |
041ff4dd | 3255 | void |
39e6acbd | 3256 | s_space (int mult) |
252b5132 RH |
3257 | { |
3258 | expressionS exp; | |
3259 | expressionS val; | |
3260 | char *p = 0; | |
3261 | char *stop = NULL; | |
fb25138b | 3262 | char stopc = 0; |
252b5132 RH |
3263 | int bytes; |
3264 | ||
3265 | #ifdef md_flush_pending_output | |
3266 | md_flush_pending_output (); | |
3267 | #endif | |
3268 | ||
cc3f603a JM |
3269 | #ifdef md_cons_align |
3270 | md_cons_align (1); | |
3271 | #endif | |
3272 | ||
252b5132 RH |
3273 | if (flag_mri) |
3274 | stop = mri_comment_field (&stopc); | |
3275 | ||
3276 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3277 | this is ds.b. */ | |
3278 | if (flag_m68k_mri && mult > 1) | |
3279 | { | |
3280 | if (now_seg == absolute_section) | |
3281 | { | |
3282 | abs_section_offset += abs_section_offset & 1; | |
3283 | if (line_label != NULL) | |
3284 | S_SET_VALUE (line_label, abs_section_offset); | |
3285 | } | |
3286 | else if (mri_common_symbol != NULL) | |
3287 | { | |
91d6fa6a | 3288 | valueT mri_val; |
252b5132 | 3289 | |
91d6fa6a NC |
3290 | mri_val = S_GET_VALUE (mri_common_symbol); |
3291 | if ((mri_val & 1) != 0) | |
252b5132 | 3292 | { |
91d6fa6a | 3293 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3294 | if (line_label != NULL) |
3295 | { | |
2b47531b ILT |
3296 | expressionS *symexp; |
3297 | ||
3298 | symexp = symbol_get_value_expression (line_label); | |
3299 | know (symexp->X_op == O_symbol); | |
3300 | know (symexp->X_add_symbol == mri_common_symbol); | |
3301 | symexp->X_add_number += 1; | |
252b5132 RH |
3302 | } |
3303 | } | |
3304 | } | |
3305 | else | |
3306 | { | |
3307 | do_align (1, (char *) NULL, 0, 0); | |
3308 | if (line_label != NULL) | |
3309 | { | |
2b47531b | 3310 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3311 | S_SET_VALUE (line_label, frag_now_fix ()); |
3312 | } | |
3313 | } | |
3314 | } | |
3315 | ||
3316 | bytes = mult; | |
3317 | ||
3318 | expression (&exp); | |
3319 | ||
3320 | SKIP_WHITESPACE (); | |
3321 | if (*input_line_pointer == ',') | |
3322 | { | |
3323 | ++input_line_pointer; | |
3324 | expression (&val); | |
3325 | } | |
3326 | else | |
3327 | { | |
3328 | val.X_op = O_constant; | |
3329 | val.X_add_number = 0; | |
3330 | } | |
3331 | ||
3332 | if (val.X_op != O_constant | |
3333 | || val.X_add_number < - 0x80 | |
3334 | || val.X_add_number > 0xff | |
3335 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3336 | { | |
9497f5ac | 3337 | resolve_expression (&exp); |
252b5132 | 3338 | if (exp.X_op != O_constant) |
0e389e77 | 3339 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3340 | else |
3341 | { | |
3342 | offsetT i; | |
3343 | ||
3344 | if (mult == 0) | |
3345 | mult = 1; | |
3346 | bytes = mult * exp.X_add_number; | |
3347 | for (i = 0; i < exp.X_add_number; i++) | |
3348 | emit_expr (&val, mult); | |
3349 | } | |
3350 | } | |
3351 | else | |
3352 | { | |
9497f5ac NC |
3353 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3354 | resolve_expression (&exp); | |
3355 | ||
252b5132 RH |
3356 | if (exp.X_op == O_constant) |
3357 | { | |
a4a151e6 | 3358 | offsetT repeat; |
252b5132 RH |
3359 | |
3360 | repeat = exp.X_add_number; | |
3361 | if (mult) | |
3362 | repeat *= mult; | |
3363 | bytes = repeat; | |
3364 | if (repeat <= 0) | |
3365 | { | |
2d150871 RO |
3366 | if (!flag_mri) |
3367 | as_warn (_(".space repeat count is zero, ignored")); | |
3368 | else if (repeat < 0) | |
252b5132 RH |
3369 | as_warn (_(".space repeat count is negative, ignored")); |
3370 | goto getout; | |
3371 | } | |
3372 | ||
3373 | /* If we are in the absolute section, just bump the offset. */ | |
3374 | if (now_seg == absolute_section) | |
3375 | { | |
3376 | abs_section_offset += repeat; | |
3377 | goto getout; | |
3378 | } | |
3379 | ||
3380 | /* If we are secretly in an MRI common section, then | |
3381 | creating space just increases the size of the common | |
3382 | symbol. */ | |
3383 | if (mri_common_symbol != NULL) | |
3384 | { | |
3385 | S_SET_VALUE (mri_common_symbol, | |
3386 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3387 | goto getout; | |
3388 | } | |
3389 | ||
3390 | if (!need_pass_2) | |
3391 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3392 | (offsetT) repeat, (char *) 0); | |
3393 | } | |
3394 | else | |
3395 | { | |
3396 | if (now_seg == absolute_section) | |
3397 | { | |
3398 | as_bad (_("space allocation too complex in absolute section")); | |
3399 | subseg_set (text_section, 0); | |
3400 | } | |
f0e652b4 | 3401 | |
252b5132 RH |
3402 | if (mri_common_symbol != NULL) |
3403 | { | |
3404 | as_bad (_("space allocation too complex in common section")); | |
3405 | mri_common_symbol = NULL; | |
3406 | } | |
f0e652b4 | 3407 | |
252b5132 RH |
3408 | if (!need_pass_2) |
3409 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3410 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3411 | } | |
3412 | ||
3413 | if (p) | |
3414 | *p = val.X_add_number; | |
3415 | } | |
3416 | ||
3417 | getout: | |
3418 | ||
3419 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3420 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3421 | or dcb.b. */ | |
3422 | if (flag_mri && (bytes & 1) != 0) | |
3423 | mri_pending_align = 1; | |
3424 | ||
3425 | demand_empty_rest_of_line (); | |
3426 | ||
3427 | if (flag_mri) | |
3428 | mri_comment_end (stop, stopc); | |
3429 | } | |
3430 | ||
3431 | /* This is like s_space, but the value is a floating point number with | |
3432 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3433 | friends. */ | |
3434 | ||
3435 | void | |
39e6acbd | 3436 | s_float_space (int float_type) |
252b5132 RH |
3437 | { |
3438 | offsetT count; | |
3439 | int flen; | |
3440 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3441 | char *stop = NULL; | |
fb25138b | 3442 | char stopc = 0; |
252b5132 | 3443 | |
cc3f603a JM |
3444 | #ifdef md_cons_align |
3445 | md_cons_align (1); | |
3446 | #endif | |
3447 | ||
252b5132 RH |
3448 | if (flag_mri) |
3449 | stop = mri_comment_field (&stopc); | |
3450 | ||
3451 | count = get_absolute_expression (); | |
3452 | ||
3453 | SKIP_WHITESPACE (); | |
3454 | if (*input_line_pointer != ',') | |
3455 | { | |
3456 | as_bad (_("missing value")); | |
3457 | ignore_rest_of_line (); | |
3458 | if (flag_mri) | |
3459 | mri_comment_end (stop, stopc); | |
3460 | return; | |
3461 | } | |
3462 | ||
3463 | ++input_line_pointer; | |
3464 | ||
3465 | SKIP_WHITESPACE (); | |
3466 | ||
3467 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3468 | * letter is legal. */ | |
3469 | if (input_line_pointer[0] == '0' | |
3882b010 | 3470 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3471 | input_line_pointer += 2; |
3472 | ||
3473 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3474 | with the exact digits specified. */ | |
3475 | if (input_line_pointer[0] == ':') | |
3476 | { | |
3477 | flen = hex_float (float_type, temp); | |
3478 | if (flen < 0) | |
3479 | { | |
3480 | ignore_rest_of_line (); | |
3481 | if (flag_mri) | |
3482 | mri_comment_end (stop, stopc); | |
3483 | return; | |
3484 | } | |
3485 | } | |
3486 | else | |
3487 | { | |
3488 | char *err; | |
3489 | ||
3490 | err = md_atof (float_type, temp, &flen); | |
3491 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3492 | know (err != NULL || flen > 0); |
252b5132 RH |
3493 | if (err) |
3494 | { | |
0e389e77 | 3495 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3496 | ignore_rest_of_line (); |
3497 | if (flag_mri) | |
3498 | mri_comment_end (stop, stopc); | |
3499 | return; | |
3500 | } | |
3501 | } | |
3502 | ||
3503 | while (--count >= 0) | |
3504 | { | |
3505 | char *p; | |
3506 | ||
3507 | p = frag_more (flen); | |
3508 | memcpy (p, temp, (unsigned int) flen); | |
3509 | } | |
3510 | ||
3511 | demand_empty_rest_of_line (); | |
3512 | ||
3513 | if (flag_mri) | |
3514 | mri_comment_end (stop, stopc); | |
3515 | } | |
3516 | ||
3517 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3518 | ||
3519 | void | |
39e6acbd | 3520 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3521 | { |
3522 | char *stop = NULL; | |
fb25138b | 3523 | char stopc = 0; |
252b5132 RH |
3524 | |
3525 | if (flag_mri) | |
3526 | stop = mri_comment_field (&stopc); | |
3527 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3528 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3529 | /* The ELF backend needs to know that we are changing sections, so | |
3530 | that .previous works correctly. */ | |
f43abd2b | 3531 | if (IS_ELF) |
a2902af6 TS |
3532 | obj_elf_section_change_hook (); |
3533 | #endif | |
252b5132 RH |
3534 | subseg_set (absolute_section, 0); |
3535 | demand_empty_rest_of_line (); | |
3536 | if (flag_mri) | |
3537 | mri_comment_end (stop, stopc); | |
3538 | } | |
3539 | ||
3540 | void | |
39e6acbd | 3541 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3542 | { |
3d540e93 | 3543 | int temp; |
252b5132 RH |
3544 | |
3545 | temp = get_absolute_expression (); | |
3546 | subseg_set (text_section, (subsegT) temp); | |
3547 | demand_empty_rest_of_line (); | |
041ff4dd | 3548 | } |
06e77878 AO |
3549 | |
3550 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3551 | referenced directly, will cause y to become a weak symbol. */ | |
3552 | void | |
3553 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3554 | { | |
3555 | char *name; | |
06e77878 AO |
3556 | symbolS *symbolP; |
3557 | symbolS *symbolP2; | |
3558 | expressionS exp; | |
3559 | ||
7bfd842d NC |
3560 | if ((name = read_symbol_name ()) == NULL) |
3561 | return; | |
06e77878 AO |
3562 | |
3563 | symbolP = symbol_find_or_make (name); | |
3564 | ||
b54788f8 AO |
3565 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3566 | { | |
89cdfe57 | 3567 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3568 | { |
3569 | as_bad (_("symbol `%s' is already defined"), name); | |
7bfd842d | 3570 | goto err_out; |
92757bc9 | 3571 | } |
89cdfe57 | 3572 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3573 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3574 | } |
3575 | ||
06e77878 AO |
3576 | SKIP_WHITESPACE (); |
3577 | ||
3578 | if (*input_line_pointer != ',') | |
3579 | { | |
06e77878 | 3580 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 3581 | goto err_out; |
06e77878 AO |
3582 | } |
3583 | ||
3584 | input_line_pointer++; | |
3585 | ||
3586 | SKIP_WHITESPACE (); | |
7bfd842d | 3587 | free (name); |
06e77878 | 3588 | |
7bfd842d NC |
3589 | if ((name = read_symbol_name ()) == NULL) |
3590 | return; | |
06e77878 AO |
3591 | |
3592 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3593 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3594 | { | |
3595 | symbolP2 = symbol_find_or_make (name); | |
3596 | S_SET_WEAKREFD (symbolP2); | |
3597 | } | |
3598 | else | |
3599 | { | |
3600 | symbolS *symp = symbolP2; | |
3601 | ||
3602 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3603 | { | |
3604 | expressionS *expP = symbol_get_value_expression (symp); | |
3605 | ||
9c2799c2 | 3606 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3607 | && expP->X_add_number == 0); |
3608 | symp = expP->X_add_symbol; | |
3609 | } | |
3610 | if (symp == symbolP) | |
3611 | { | |
3612 | char *loop; | |
3613 | ||
3614 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3615 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3616 | |
3617 | symp = symbolP2; | |
3618 | while (symp != symbolP) | |
3619 | { | |
3620 | char *old_loop = loop; | |
7bfd842d | 3621 | |
06e77878 | 3622 | symp = symbol_get_value_expression (symp)->X_add_symbol; |
1bf57e9f AM |
3623 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3624 | (const char *) NULL); | |
06e77878 AO |
3625 | free (old_loop); |
3626 | } | |
3627 | ||
3628 | as_bad (_("%s: would close weakref loop: %s"), | |
3629 | S_GET_NAME (symbolP), loop); | |
3630 | ||
3631 | free (loop); | |
7bfd842d | 3632 | free (name); |
06e77878 AO |
3633 | ignore_rest_of_line (); |
3634 | return; | |
3635 | } | |
3636 | ||
3637 | /* Short-circuiting instead of just checking here might speed | |
3638 | things up a tiny little bit, but loop error messages would | |
3639 | miss intermediate links. */ | |
3640 | /* symbolP2 = symp; */ | |
3641 | } | |
3642 | ||
06e77878 AO |
3643 | memset (&exp, 0, sizeof (exp)); |
3644 | exp.X_op = O_symbol; | |
3645 | exp.X_add_symbol = symbolP2; | |
3646 | ||
3647 | S_SET_SEGMENT (symbolP, undefined_section); | |
3648 | symbol_set_value_expression (symbolP, &exp); | |
3649 | symbol_set_frag (symbolP, &zero_address_frag); | |
3650 | S_SET_WEAKREFR (symbolP); | |
3651 | ||
3652 | demand_empty_rest_of_line (); | |
7bfd842d NC |
3653 | free (name); |
3654 | return; | |
3655 | ||
3656 | err_out: | |
3657 | ignore_rest_of_line (); | |
3658 | free (name); | |
3659 | return; | |
06e77878 | 3660 | } |
252b5132 | 3661 | \f |
c95b35a9 NS |
3662 | |
3663 | /* Verify that we are at the end of a line. If not, issue an error and | |
3664 | skip to EOL. */ | |
3665 | ||
041ff4dd | 3666 | void |
39e6acbd | 3667 | demand_empty_rest_of_line (void) |
252b5132 RH |
3668 | { |
3669 | SKIP_WHITESPACE (); | |
3670 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3671 | input_line_pointer++; |
252b5132 | 3672 | else |
252b5132 | 3673 | { |
3882b010 | 3674 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3675 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3676 | *input_line_pointer); |
252b5132 | 3677 | else |
c95b35a9 | 3678 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3679 | *input_line_pointer); |
c95b35a9 | 3680 | ignore_rest_of_line (); |
252b5132 | 3681 | } |
fa94de6b | 3682 | |
c95b35a9 NS |
3683 | /* Return pointing just after end-of-line. */ |
3684 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3685 | } | |
3686 | ||
3687 | /* Silently advance to the end of line. Use this after already having | |
3688 | issued an error about something bad. */ | |
3689 | ||
3690 | void | |
3691 | ignore_rest_of_line (void) | |
3692 | { | |
3693 | while (input_line_pointer < buffer_limit | |
3694 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3695 | input_line_pointer++; | |
f0e652b4 | 3696 | |
041ff4dd NC |
3697 | input_line_pointer++; |
3698 | ||
3699 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3700 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3701 | } | |
3702 | ||
be95a9c1 AM |
3703 | /* Sets frag for given symbol to zero_address_frag, except when the |
3704 | symbol frag is already set to a dummy listing frag. */ | |
3705 | ||
3706 | static void | |
3707 | set_zero_frag (symbolS *symbolP) | |
3708 | { | |
3709 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3710 | symbol_set_frag (symbolP, &zero_address_frag); | |
3711 | } | |
3712 | ||
041ff4dd | 3713 | /* In: Pointer to a symbol. |
d6415f6c | 3714 | Input_line_pointer->expression. |
f0e652b4 | 3715 | |
041ff4dd | 3716 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3717 | Tried to set symbol to value of expression. |
3718 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3719 | |
252b5132 | 3720 | void |
39e6acbd | 3721 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3722 | { |
3723 | expressionS exp; | |
be95a9c1 | 3724 | segT seg; |
252b5132 | 3725 | |
041ff4dd | 3726 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3727 | |
9497f5ac NC |
3728 | if (!S_IS_FORWARD_REF (symbolP)) |
3729 | (void) expression (&exp); | |
3730 | else | |
3731 | (void) deferred_expression (&exp); | |
252b5132 RH |
3732 | |
3733 | if (exp.X_op == O_illegal) | |
0e389e77 | 3734 | as_bad (_("illegal expression")); |
252b5132 | 3735 | else if (exp.X_op == O_absent) |
0e389e77 | 3736 | as_bad (_("missing expression")); |
252b5132 RH |
3737 | else if (exp.X_op == O_big) |
3738 | { | |
3739 | if (exp.X_add_number > 0) | |
0e389e77 | 3740 | as_bad (_("bignum invalid")); |
252b5132 | 3741 | else |
0e389e77 | 3742 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3743 | } |
3744 | else if (exp.X_op == O_subtract | |
9497f5ac | 3745 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3746 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3747 | && (symbol_get_frag (exp.X_add_symbol) |
3748 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3749 | { |
3750 | exp.X_op = O_constant; | |
3751 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3752 | - S_GET_VALUE (exp.X_op_symbol)); | |
3753 | } | |
3754 | ||
be95a9c1 AM |
3755 | if (symbol_section_p (symbolP)) |
3756 | { | |
3757 | as_bad ("attempt to set value of section symbol"); | |
3758 | return; | |
3759 | } | |
be95a9c1 | 3760 | |
252b5132 RH |
3761 | switch (exp.X_op) |
3762 | { | |
3763 | case O_illegal: | |
3764 | case O_absent: | |
3765 | case O_big: | |
3766 | exp.X_add_number = 0; | |
3767 | /* Fall through. */ | |
3768 | case O_constant: | |
3769 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3770 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3771 | set_zero_frag (symbolP); |
252b5132 RH |
3772 | break; |
3773 | ||
3774 | case O_register: | |
97c4f2d9 | 3775 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3776 | if (S_IS_EXTERNAL (symbolP)) |
3777 | { | |
3778 | as_bad ("can't equate global symbol `%s' with register name", | |
3779 | S_GET_NAME (symbolP)); | |
3780 | return; | |
3781 | } | |
97c4f2d9 | 3782 | #endif |
252b5132 RH |
3783 | S_SET_SEGMENT (symbolP, reg_section); |
3784 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3785 | set_zero_frag (symbolP); |
db557034 | 3786 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3787 | break; |
3788 | ||
3789 | case O_symbol: | |
be95a9c1 AM |
3790 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3791 | /* For x=undef+const, create an expression symbol. | |
3792 | For x=x+const, just update x except when x is an undefined symbol | |
3793 | For x=defined+const, evaluate x. */ | |
3794 | if (symbolP == exp.X_add_symbol | |
3795 | && (seg != undefined_section | |
3796 | || !symbol_constant_p (symbolP))) | |
3797 | { | |
3798 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3799 | break; | |
3800 | } | |
9497f5ac | 3801 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3802 | { |
3803 | symbolS *s = exp.X_add_symbol; | |
3804 | ||
60938e80 L |
3805 | if (S_IS_COMMON (s)) |
3806 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3807 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3808 | ||
be95a9c1 AM |
3809 | S_SET_SEGMENT (symbolP, seg); |
3810 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3811 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3812 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3813 | break; |
252b5132 | 3814 | } |
66bd02d3 AM |
3815 | S_SET_SEGMENT (symbolP, undefined_section); |
3816 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 3817 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
3818 | set_zero_frag (symbolP); |
3819 | break; | |
252b5132 RH |
3820 | |
3821 | default: | |
aba4aa7d AM |
3822 | /* The value is some complex expression. */ |
3823 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3824 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3825 | set_zero_frag (symbolP); |
252b5132 RH |
3826 | break; |
3827 | } | |
3828 | } | |
3829 | \f | |
d6415f6c | 3830 | /* cons() |
f0e652b4 | 3831 | |
041ff4dd NC |
3832 | CONStruct more frag of .bytes, or .words etc. |
3833 | Should need_pass_2 be 1 then emit no frag(s). | |
3834 | This understands EXPRESSIONS. | |
f0e652b4 | 3835 | |
041ff4dd | 3836 | Bug (?) |
f0e652b4 | 3837 | |
041ff4dd NC |
3838 | This has a split personality. We use expression() to read the |
3839 | value. We can detect if the value won't fit in a byte or word. | |
3840 | But we can't detect if expression() discarded significant digits | |
3841 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3842 | |
3843 | /* Select a parser for cons expressions. */ | |
3844 | ||
3845 | /* Some targets need to parse the expression in various fancy ways. | |
3846 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3847 | (for example, the HPPA does this). Otherwise, you can define | |
3848 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3849 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3850 | are defined, which is the normal case, then only simple expressions | |
3851 | are permitted. */ | |
3852 | ||
abd63a32 | 3853 | #ifdef TC_M68K |
252b5132 | 3854 | static void |
39e6acbd | 3855 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3856 | #endif |
252b5132 RH |
3857 | |
3858 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3859 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
62ebcb5c AM |
3860 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3861 | (parse_bitfield_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
041ff4dd | 3862 | static void |
39e6acbd | 3863 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3864 | #endif |
3865 | #ifdef REPEAT_CONS_EXPRESSIONS | |
62ebcb5c AM |
3866 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3867 | (parse_repeat_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 | 3868 | static void |
39e6acbd | 3869 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3870 | #endif |
3871 | ||
3872 | /* If we haven't gotten one yet, just call expression. */ | |
3873 | #ifndef TC_PARSE_CONS_EXPRESSION | |
62ebcb5c AM |
3874 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3875 | (expression (EXP), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 RH |
3876 | #endif |
3877 | #endif | |
3878 | ||
cdfbf930 | 3879 | void |
b41b1f95 L |
3880 | do_parse_cons_expression (expressionS *exp, |
3881 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 | 3882 | { |
62ebcb5c | 3883 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
cdfbf930 RH |
3884 | } |
3885 | ||
3886 | ||
041ff4dd NC |
3887 | /* Worker to do .byte etc statements. |
3888 | Clobbers input_line_pointer and checks end-of-line. */ | |
3889 | ||
3890 | static void | |
3d540e93 | 3891 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 3892 | int rva) |
252b5132 RH |
3893 | { |
3894 | int c; | |
3895 | expressionS exp; | |
3896 | char *stop = NULL; | |
fb25138b | 3897 | char stopc = 0; |
252b5132 RH |
3898 | |
3899 | #ifdef md_flush_pending_output | |
3900 | md_flush_pending_output (); | |
3901 | #endif | |
3902 | ||
3903 | if (flag_mri) | |
3904 | stop = mri_comment_field (&stopc); | |
3905 | ||
3906 | if (is_it_end_of_statement ()) | |
3907 | { | |
3908 | demand_empty_rest_of_line (); | |
3909 | if (flag_mri) | |
3910 | mri_comment_end (stop, stopc); | |
3911 | return; | |
3912 | } | |
3913 | ||
cc1bc22a AM |
3914 | #ifdef TC_ADDRESS_BYTES |
3915 | if (nbytes == 0) | |
3916 | nbytes = TC_ADDRESS_BYTES (); | |
3917 | #endif | |
3918 | ||
252b5132 RH |
3919 | #ifdef md_cons_align |
3920 | md_cons_align (nbytes); | |
3921 | #endif | |
3922 | ||
3923 | c = 0; | |
3924 | do | |
3925 | { | |
62ebcb5c | 3926 | TC_PARSE_CONS_RETURN_TYPE ret = TC_PARSE_CONS_RETURN_NONE; |
bf7279d5 AM |
3927 | #ifdef TC_CONS_FIX_CHECK |
3928 | fixS **cur_fix = &frchain_now->fix_tail; | |
3929 | ||
3930 | if (*cur_fix != NULL) | |
3931 | cur_fix = &(*cur_fix)->fx_next; | |
3932 | #endif | |
62ebcb5c | 3933 | |
abd63a32 | 3934 | #ifdef TC_M68K |
252b5132 RH |
3935 | if (flag_m68k_mri) |
3936 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3937 | else | |
abd63a32 | 3938 | #endif |
fa94de6b | 3939 | { |
847d4311 NS |
3940 | if (*input_line_pointer == '"') |
3941 | { | |
3942 | as_bad (_("unexpected `\"' in expression")); | |
3943 | ignore_rest_of_line (); | |
3944 | return; | |
3945 | } | |
62ebcb5c | 3946 | ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
847d4311 | 3947 | } |
252b5132 RH |
3948 | |
3949 | if (rva) | |
3950 | { | |
3951 | if (exp.X_op == O_symbol) | |
3952 | exp.X_op = O_symbol_rva; | |
3953 | else | |
3954 | as_fatal (_("rva without symbol")); | |
3955 | } | |
62ebcb5c | 3956 | emit_expr_with_reloc (&exp, (unsigned int) nbytes, ret); |
bf7279d5 AM |
3957 | #ifdef TC_CONS_FIX_CHECK |
3958 | TC_CONS_FIX_CHECK (&exp, nbytes, *cur_fix); | |
3959 | #endif | |
252b5132 RH |
3960 | ++c; |
3961 | } | |
3962 | while (*input_line_pointer++ == ','); | |
3963 | ||
3964 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3965 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3966 | or dcb.b. */ | |
3967 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3968 | mri_pending_align = 1; | |
3969 | ||
041ff4dd | 3970 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3971 | |
3972 | demand_empty_rest_of_line (); | |
3973 | ||
3974 | if (flag_mri) | |
3975 | mri_comment_end (stop, stopc); | |
3976 | } | |
3977 | ||
252b5132 | 3978 | void |
39e6acbd | 3979 | cons (int size) |
252b5132 RH |
3980 | { |
3981 | cons_worker (size, 0); | |
3982 | } | |
3983 | ||
041ff4dd | 3984 | void |
39e6acbd | 3985 | s_rva (int size) |
252b5132 RH |
3986 | { |
3987 | cons_worker (size, 1); | |
3988 | } | |
3989 | ||
05e9452c AM |
3990 | /* .reloc offset, reloc_name, symbol+addend. */ |
3991 | ||
b38ead21 | 3992 | static void |
05e9452c AM |
3993 | s_reloc (int ignore ATTRIBUTE_UNUSED) |
3994 | { | |
3995 | char *stop = NULL; | |
3996 | char stopc = 0; | |
3997 | expressionS exp; | |
3998 | char *r_name; | |
3999 | int c; | |
4000 | struct reloc_list *reloc; | |
740bdc67 AM |
4001 | struct _bfd_rel { char *name; bfd_reloc_code_real_type code; }; |
4002 | static struct _bfd_rel bfd_relocs[] = { | |
4003 | { "NONE", BFD_RELOC_NONE }, | |
4004 | { "8", BFD_RELOC_8 }, | |
4005 | { "16", BFD_RELOC_16 }, | |
4006 | { "32", BFD_RELOC_32 }, | |
4007 | { "64", BFD_RELOC_64 } | |
4008 | }; | |
05e9452c | 4009 | |
1e9cc1c2 | 4010 | reloc = (struct reloc_list *) xmalloc (sizeof (*reloc)); |
05e9452c AM |
4011 | |
4012 | if (flag_mri) | |
4013 | stop = mri_comment_field (&stopc); | |
4014 | ||
4015 | expression (&exp); | |
4016 | switch (exp.X_op) | |
4017 | { | |
4018 | case O_illegal: | |
4019 | case O_absent: | |
4020 | case O_big: | |
4021 | case O_register: | |
4022 | as_bad (_("missing or bad offset expression")); | |
4023 | goto err_out; | |
4024 | case O_constant: | |
4025 | exp.X_add_symbol = section_symbol (now_seg); | |
4026 | exp.X_op = O_symbol; | |
4027 | /* Fall thru */ | |
4028 | case O_symbol: | |
4029 | if (exp.X_add_number == 0) | |
4030 | { | |
4031 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
4032 | break; | |
4033 | } | |
4034 | /* Fall thru */ | |
4035 | default: | |
4036 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
4037 | break; | |
4038 | } | |
4039 | ||
4040 | SKIP_WHITESPACE (); | |
4041 | if (*input_line_pointer != ',') | |
4042 | { | |
4043 | as_bad (_("missing reloc type")); | |
4044 | goto err_out; | |
4045 | } | |
4046 | ||
4047 | ++input_line_pointer; | |
4048 | SKIP_WHITESPACE (); | |
4049 | r_name = input_line_pointer; | |
4050 | c = get_symbol_end (); | |
740bdc67 AM |
4051 | if (strncasecmp (r_name, "BFD_RELOC_", 10) == 0) |
4052 | { | |
4053 | unsigned int i; | |
4054 | ||
4055 | for (reloc->u.a.howto = NULL, i = 0; i < ARRAY_SIZE (bfd_relocs); i++) | |
4056 | if (strcasecmp (r_name + 10, bfd_relocs[i].name) == 0) | |
4057 | { | |
4058 | reloc->u.a.howto = bfd_reloc_type_lookup (stdoutput, | |
4059 | bfd_relocs[i].code); | |
4060 | break; | |
4061 | } | |
4062 | } | |
4063 | else | |
4064 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
05e9452c AM |
4065 | *input_line_pointer = c; |
4066 | if (reloc->u.a.howto == NULL) | |
4067 | { | |
4068 | as_bad (_("unrecognized reloc type")); | |
4069 | goto err_out; | |
4070 | } | |
4071 | ||
4072 | exp.X_op = O_absent; | |
4073 | SKIP_WHITESPACE (); | |
4074 | if (*input_line_pointer == ',') | |
4075 | { | |
4076 | ++input_line_pointer; | |
c188d0bb | 4077 | expression (&exp); |
05e9452c AM |
4078 | } |
4079 | switch (exp.X_op) | |
4080 | { | |
4081 | case O_illegal: | |
4082 | case O_big: | |
4083 | case O_register: | |
4084 | as_bad (_("bad reloc expression")); | |
4085 | err_out: | |
4086 | ignore_rest_of_line (); | |
4087 | free (reloc); | |
4088 | if (flag_mri) | |
4089 | mri_comment_end (stop, stopc); | |
4090 | return; | |
4091 | case O_absent: | |
4092 | reloc->u.a.sym = NULL; | |
4093 | reloc->u.a.addend = 0; | |
4094 | break; | |
4095 | case O_constant: | |
4096 | reloc->u.a.sym = NULL; | |
4097 | reloc->u.a.addend = exp.X_add_number; | |
4098 | break; | |
4099 | case O_symbol: | |
4100 | reloc->u.a.sym = exp.X_add_symbol; | |
4101 | reloc->u.a.addend = exp.X_add_number; | |
4102 | break; | |
4103 | default: | |
4104 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4105 | reloc->u.a.addend = 0; | |
4106 | break; | |
4107 | } | |
4108 | ||
4109 | as_where (&reloc->file, &reloc->line); | |
4110 | reloc->next = reloc_list; | |
4111 | reloc_list = reloc; | |
4112 | ||
4113 | demand_empty_rest_of_line (); | |
4114 | if (flag_mri) | |
4115 | mri_comment_end (stop, stopc); | |
4116 | } | |
4117 | ||
252b5132 RH |
4118 | /* Put the contents of expression EXP into the object file using |
4119 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4120 | ||
4121 | void | |
39e6acbd | 4122 | emit_expr (expressionS *exp, unsigned int nbytes) |
62ebcb5c AM |
4123 | { |
4124 | emit_expr_with_reloc (exp, nbytes, TC_PARSE_CONS_RETURN_NONE); | |
4125 | } | |
4126 | ||
4127 | void | |
4128 | emit_expr_with_reloc (expressionS *exp, | |
4129 | unsigned int nbytes, | |
4130 | TC_PARSE_CONS_RETURN_TYPE reloc) | |
252b5132 RH |
4131 | { |
4132 | operatorT op; | |
3d540e93 | 4133 | char *p; |
252b5132 RH |
4134 | valueT extra_digit = 0; |
4135 | ||
4136 | /* Don't do anything if we are going to make another pass. */ | |
4137 | if (need_pass_2) | |
4138 | return; | |
4139 | ||
4bc25101 | 4140 | frag_grow (nbytes); |
ed7d5d1a | 4141 | dot_value = frag_now_fix (); |
8e723a10 | 4142 | dot_frag = frag_now; |
ed7d5d1a | 4143 | |
252b5132 RH |
4144 | #ifndef NO_LISTING |
4145 | #ifdef OBJ_ELF | |
4146 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4147 | appear as a four byte positive constant in the .line section, | |
4148 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4149 | { | |
4150 | static int dwarf_line = -1; | |
4151 | ||
4152 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4153 | dwarf_line = -1; | |
4154 | else if (dwarf_line >= 0 | |
4155 | && nbytes == 2 | |
4156 | && exp->X_op == O_constant | |
4157 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4158 | listing_source_line ((unsigned int) dwarf_line); | |
4159 | else if (nbytes == 4 | |
4160 | && exp->X_op == O_constant | |
4161 | && exp->X_add_number >= 0) | |
4162 | dwarf_line = exp->X_add_number; | |
4163 | else | |
4164 | dwarf_line = -1; | |
4165 | } | |
4166 | ||
4167 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4168 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4169 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4170 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4171 | file. We look for that case here. */ | |
4172 | { | |
4173 | static int dwarf_file = 0; | |
4174 | ||
4175 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4176 | dwarf_file = 0; | |
4177 | else if (dwarf_file == 0 | |
4178 | && nbytes == 2 | |
4179 | && exp->X_op == O_constant | |
4180 | && exp->X_add_number == 0x11) | |
4181 | dwarf_file = 1; | |
4182 | else if (dwarf_file == 1 | |
4183 | && nbytes == 2 | |
4184 | && exp->X_op == O_constant | |
4185 | && exp->X_add_number == 0x12) | |
4186 | dwarf_file = 2; | |
4187 | else if (dwarf_file == 2 | |
4188 | && nbytes == 4) | |
4189 | dwarf_file = 3; | |
4190 | else if (dwarf_file == 3 | |
4191 | && nbytes == 2 | |
4192 | && exp->X_op == O_constant | |
4193 | && exp->X_add_number == 0x38) | |
4194 | dwarf_file = 4; | |
4195 | else | |
4196 | dwarf_file = 0; | |
4197 | ||
4198 | /* The variable dwarf_file_string tells stringer that the string | |
4199 | may be the name of the source file. */ | |
4200 | if (dwarf_file == 4) | |
4201 | dwarf_file_string = 1; | |
4202 | else | |
4203 | dwarf_file_string = 0; | |
4204 | } | |
4205 | #endif | |
4206 | #endif | |
4207 | ||
4208 | if (check_eh_frame (exp, &nbytes)) | |
4209 | return; | |
4210 | ||
4211 | op = exp->X_op; | |
4212 | ||
4213 | /* Allow `.word 0' in the absolute section. */ | |
4214 | if (now_seg == absolute_section) | |
4215 | { | |
4216 | if (op != O_constant || exp->X_add_number != 0) | |
4217 | as_bad (_("attempt to store value in absolute section")); | |
4218 | abs_section_offset += nbytes; | |
4219 | return; | |
4220 | } | |
4221 | ||
4222 | /* Handle a negative bignum. */ | |
4223 | if (op == O_uminus | |
4224 | && exp->X_add_number == 0 | |
2b47531b ILT |
4225 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4226 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4227 | { |
4228 | int i; | |
4229 | unsigned long carry; | |
4230 | ||
2b47531b | 4231 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4232 | |
4233 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4234 | carry = 1; | |
4235 | for (i = 0; i < exp->X_add_number; i++) | |
4236 | { | |
4237 | unsigned long next; | |
4238 | ||
041ff4dd | 4239 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4240 | & LITTLENUM_MASK) |
4241 | + carry); | |
4242 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4243 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4244 | } | |
4245 | ||
4246 | /* We can ignore any carry out, because it will be handled by | |
4247 | extra_digit if it is needed. */ | |
4248 | ||
4249 | extra_digit = (valueT) -1; | |
4250 | op = O_big; | |
4251 | } | |
4252 | ||
4253 | if (op == O_absent || op == O_illegal) | |
4254 | { | |
4255 | as_warn (_("zero assumed for missing expression")); | |
4256 | exp->X_add_number = 0; | |
4257 | op = O_constant; | |
4258 | } | |
4259 | else if (op == O_big && exp->X_add_number <= 0) | |
4260 | { | |
0e389e77 | 4261 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4262 | exp->X_add_number = 0; |
4263 | op = O_constant; | |
4264 | } | |
4265 | else if (op == O_register) | |
4266 | { | |
4267 | as_warn (_("register value used as expression")); | |
4268 | op = O_constant; | |
4269 | } | |
4270 | ||
4271 | p = frag_more ((int) nbytes); | |
4272 | ||
62ebcb5c AM |
4273 | if (reloc != TC_PARSE_CONS_RETURN_NONE) |
4274 | { | |
4275 | emit_expr_fix (exp, nbytes, frag_now, p, reloc); | |
4276 | return; | |
4277 | } | |
4278 | ||
252b5132 RH |
4279 | #ifndef WORKING_DOT_WORD |
4280 | /* If we have the difference of two symbols in a word, save it on | |
4281 | the broken_words list. See the code in write.c. */ | |
4282 | if (op == O_subtract && nbytes == 2) | |
4283 | { | |
4284 | struct broken_word *x; | |
4285 | ||
4286 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
4287 | x->next_broken_word = broken_words; | |
4288 | broken_words = x; | |
4289 | x->seg = now_seg; | |
4290 | x->subseg = now_subseg; | |
4291 | x->frag = frag_now; | |
4292 | x->word_goes_here = p; | |
4293 | x->dispfrag = 0; | |
4294 | x->add = exp->X_add_symbol; | |
4295 | x->sub = exp->X_op_symbol; | |
4296 | x->addnum = exp->X_add_number; | |
4297 | x->added = 0; | |
dc59a897 | 4298 | x->use_jump = 0; |
252b5132 RH |
4299 | new_broken_words++; |
4300 | return; | |
4301 | } | |
4302 | #endif | |
4303 | ||
4304 | /* If we have an integer, but the number of bytes is too large to | |
4305 | pass to md_number_to_chars, handle it as a bignum. */ | |
4306 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4307 | { | |
e5604d79 | 4308 | extra_digit = exp->X_unsigned ? 0 : -1; |
956a6ba3 | 4309 | convert_to_bignum (exp, !exp->X_unsigned); |
e5604d79 | 4310 | op = O_big; |
252b5132 RH |
4311 | } |
4312 | ||
4313 | if (op == O_constant) | |
4314 | { | |
3d540e93 NC |
4315 | valueT get; |
4316 | valueT use; | |
4317 | valueT mask; | |
252b5132 | 4318 | valueT hibit; |
3d540e93 | 4319 | valueT unmask; |
252b5132 RH |
4320 | |
4321 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4322 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4323 | if (nbytes >= sizeof (valueT)) |
4324 | { | |
4325 | mask = 0; | |
4326 | if (nbytes > sizeof (valueT)) | |
4327 | hibit = 0; | |
4328 | else | |
4329 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4330 | } | |
4331 | else | |
4332 | { | |
041ff4dd | 4333 | /* Don't store these bits. */ |
252b5132 RH |
4334 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4335 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4336 | } | |
4337 | ||
041ff4dd | 4338 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4339 | |
4340 | #ifdef NEVER | |
4341 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4342 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4343 | #endif |
4344 | ||
4345 | get = exp->X_add_number; | |
4346 | use = get & unmask; | |
4347 | if ((get & mask) != 0 | |
4348 | && ((get & mask) != mask | |
4349 | || (get & hibit) == 0)) | |
041ff4dd | 4350 | { /* Leading bits contain both 0s & 1s. */ |
b6ac5419 | 4351 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4352 | #ifndef __MSVCRT__ |
5c612369 NC |
4353 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4354 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4355 | #else |
4356 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4357 | (unsigned long long) get, (unsigned long long) use); | |
4358 | #endif | |
b6ac5419 AM |
4359 | #else |
4360 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4361 | (unsigned long) get, (unsigned long) use); | |
4362 | #endif | |
252b5132 | 4363 | } |
041ff4dd | 4364 | /* Put bytes in right order. */ |
252b5132 RH |
4365 | md_number_to_chars (p, use, (int) nbytes); |
4366 | } | |
4367 | else if (op == O_big) | |
4368 | { | |
4369 | unsigned int size; | |
4370 | LITTLENUM_TYPE *nums; | |
4371 | ||
252b5132 RH |
4372 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4373 | if (nbytes < size) | |
4374 | { | |
93d90f46 AM |
4375 | int i = nbytes / CHARS_PER_LITTLENUM; |
4376 | if (i != 0) | |
4377 | { | |
4378 | LITTLENUM_TYPE sign = 0; | |
4379 | if ((generic_bignum[--i] | |
4380 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4381 | sign = ~(LITTLENUM_TYPE) 0; | |
4382 | while (++i < exp->X_add_number) | |
4383 | if (generic_bignum[i] != sign) | |
4384 | break; | |
4385 | } | |
4386 | if (i < exp->X_add_number) | |
4387 | as_warn (_("bignum truncated to %d bytes"), nbytes); | |
252b5132 RH |
4388 | size = nbytes; |
4389 | } | |
4390 | ||
93d90f46 AM |
4391 | if (nbytes == 1) |
4392 | { | |
4393 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4394 | return; | |
4395 | } | |
4396 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4397 | ||
252b5132 RH |
4398 | if (target_big_endian) |
4399 | { | |
4400 | while (nbytes > size) | |
4401 | { | |
4402 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4403 | nbytes -= CHARS_PER_LITTLENUM; | |
4404 | p += CHARS_PER_LITTLENUM; | |
4405 | } | |
4406 | ||
4407 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4408 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4409 | { |
4410 | --nums; | |
4411 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4412 | size -= CHARS_PER_LITTLENUM; | |
4413 | p += CHARS_PER_LITTLENUM; | |
4414 | } | |
4415 | } | |
4416 | else | |
4417 | { | |
4418 | nums = generic_bignum; | |
ceac3f62 | 4419 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4420 | { |
4421 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4422 | ++nums; | |
4423 | size -= CHARS_PER_LITTLENUM; | |
4424 | p += CHARS_PER_LITTLENUM; | |
4425 | nbytes -= CHARS_PER_LITTLENUM; | |
4426 | } | |
4427 | ||
ceac3f62 | 4428 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4429 | { |
4430 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4431 | nbytes -= CHARS_PER_LITTLENUM; | |
4432 | p += CHARS_PER_LITTLENUM; | |
4433 | } | |
4434 | } | |
4435 | } | |
4436 | else | |
62ebcb5c | 4437 | emit_expr_fix (exp, nbytes, frag_now, p, TC_PARSE_CONS_RETURN_NONE); |
7ddd14de BW |
4438 | } |
4439 | ||
4440 | void | |
62ebcb5c | 4441 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p, |
00c06fdc | 4442 | TC_PARSE_CONS_RETURN_TYPE r ATTRIBUTE_UNUSED) |
7ddd14de | 4443 | { |
62ebcb5c AM |
4444 | int offset = 0; |
4445 | unsigned int size = nbytes; | |
4446 | ||
4447 | memset (p, 0, size); | |
252b5132 | 4448 | |
7ddd14de | 4449 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4450 | |
252b5132 | 4451 | #ifdef TC_CONS_FIX_NEW |
62ebcb5c | 4452 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal + offset, size, exp, r); |
252b5132 | 4453 | #else |
62ebcb5c AM |
4454 | if (r != TC_PARSE_CONS_RETURN_NONE) |
4455 | { | |
4456 | reloc_howto_type *reloc_howto; | |
252b5132 | 4457 | |
62ebcb5c AM |
4458 | reloc_howto = bfd_reloc_type_lookup (stdoutput, r); |
4459 | size = bfd_get_reloc_size (reloc_howto); | |
4460 | ||
4461 | if (size > nbytes) | |
4462 | { | |
4463 | as_bad (_("%s relocations do not fit in %u bytes\n"), | |
4464 | reloc_howto->name, nbytes); | |
4465 | return; | |
4466 | } | |
4467 | else if (target_big_endian) | |
4468 | offset = nbytes - size; | |
4469 | } | |
4470 | else | |
4471 | switch (size) | |
7ddd14de BW |
4472 | { |
4473 | case 1: | |
4474 | r = BFD_RELOC_8; | |
4475 | break; | |
4476 | case 2: | |
4477 | r = BFD_RELOC_16; | |
4478 | break; | |
d4f4f3fb AM |
4479 | case 3: |
4480 | r = BFD_RELOC_24; | |
4481 | break; | |
7ddd14de BW |
4482 | case 4: |
4483 | r = BFD_RELOC_32; | |
4484 | break; | |
4485 | case 8: | |
4486 | r = BFD_RELOC_64; | |
4487 | break; | |
4488 | default: | |
62ebcb5c AM |
4489 | as_bad (_("unsupported BFD relocation size %u"), size); |
4490 | return; | |
252b5132 | 4491 | } |
62ebcb5c AM |
4492 | fix_new_exp (frag, p - frag->fr_literal + offset, size, |
4493 | exp, 0, r); | |
252b5132 | 4494 | #endif |
252b5132 RH |
4495 | } |
4496 | \f | |
4497 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
4498 | ||
4499 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
4500 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
4501 | then pack them all together. We do a little better in that we allow | |
4502 | them in words, longs, etc. and we'll pack them in target byte order | |
4503 | for you. | |
4504 | ||
47eebc20 | 4505 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
4506 | entirely fit, put it in the next unit. Overflowing the bitfield is |
4507 | explicitly *not* even a warning. The bitwidth should be considered | |
4508 | a "mask". | |
4509 | ||
4510 | To use this function the tc-XXX.h file should define | |
4511 | BITFIELD_CONS_EXPRESSIONS. */ | |
4512 | ||
041ff4dd | 4513 | static void |
252b5132 RH |
4514 | parse_bitfield_cons (exp, nbytes) |
4515 | expressionS *exp; | |
4516 | unsigned int nbytes; | |
4517 | { | |
4518 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
4519 | char *hold = input_line_pointer; | |
4520 | ||
4521 | (void) expression (exp); | |
4522 | ||
4523 | if (*input_line_pointer == ':') | |
041ff4dd NC |
4524 | { |
4525 | /* Bitfields. */ | |
252b5132 RH |
4526 | long value = 0; |
4527 | ||
4528 | for (;;) | |
4529 | { | |
4530 | unsigned long width; | |
4531 | ||
4532 | if (*input_line_pointer != ':') | |
4533 | { | |
4534 | input_line_pointer = hold; | |
4535 | break; | |
041ff4dd | 4536 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
4537 | |
4538 | /* In the general case, we can't allow | |
4539 | full expressions with symbol | |
4540 | differences and such. The relocation | |
4541 | entries for symbols not defined in this | |
4542 | assembly would require arbitrary field | |
4543 | widths, positions, and masks which most | |
4544 | of our current object formats don't | |
4545 | support. | |
4546 | ||
4547 | In the specific case where a symbol | |
4548 | *is* defined in this assembly, we | |
4549 | *could* build fixups and track it, but | |
4550 | this could lead to confusion for the | |
4551 | backends. I'm lazy. I'll take any | |
4552 | SEG_ABSOLUTE. I think that means that | |
4553 | you can use a previous .set or | |
041ff4dd | 4554 | .equ type symbol. xoxorich. */ |
252b5132 RH |
4555 | |
4556 | if (exp->X_op == O_absent) | |
4557 | { | |
4558 | as_warn (_("using a bit field width of zero")); | |
4559 | exp->X_add_number = 0; | |
4560 | exp->X_op = O_constant; | |
041ff4dd | 4561 | } /* Implied zero width bitfield. */ |
252b5132 RH |
4562 | |
4563 | if (exp->X_op != O_constant) | |
4564 | { | |
4565 | *input_line_pointer = '\0'; | |
4566 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
4567 | *input_line_pointer = ':'; | |
4568 | demand_empty_rest_of_line (); | |
4569 | return; | |
041ff4dd | 4570 | } /* Too complex. */ |
252b5132 RH |
4571 | |
4572 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
4573 | { | |
4574 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
4575 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
4576 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 4577 | } /* Too big. */ |
252b5132 RH |
4578 | |
4579 | if (width > bits_available) | |
4580 | { | |
4581 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
4582 | input_line_pointer = hold; | |
4583 | exp->X_add_number = value; | |
4584 | break; | |
041ff4dd | 4585 | } /* Won't fit. */ |
252b5132 | 4586 | |
ef99799a KH |
4587 | /* Skip ':'. */ |
4588 | hold = ++input_line_pointer; | |
252b5132 RH |
4589 | |
4590 | (void) expression (exp); | |
4591 | if (exp->X_op != O_constant) | |
4592 | { | |
4593 | char cache = *input_line_pointer; | |
4594 | ||
4595 | *input_line_pointer = '\0'; | |
4596 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
4597 | *input_line_pointer = cache; | |
4598 | demand_empty_rest_of_line (); | |
4599 | return; | |
041ff4dd | 4600 | } /* Too complex. */ |
252b5132 RH |
4601 | |
4602 | value |= ((~(-1 << width) & exp->X_add_number) | |
4603 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
4604 | ||
4605 | if ((bits_available -= width) == 0 | |
4606 | || is_it_end_of_statement () | |
4607 | || *input_line_pointer != ',') | |
4608 | { | |
4609 | break; | |
041ff4dd | 4610 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4611 | |
4612 | hold = ++input_line_pointer; | |
4613 | (void) expression (exp); | |
041ff4dd | 4614 | } |
252b5132 RH |
4615 | |
4616 | exp->X_add_number = value; | |
4617 | exp->X_op = O_constant; | |
4618 | exp->X_unsigned = 1; | |
956a6ba3 | 4619 | exp->X_extrabit = 0; |
041ff4dd NC |
4620 | } |
4621 | } | |
252b5132 RH |
4622 | |
4623 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4624 | \f | |
4625 | /* Handle an MRI style string expression. */ | |
4626 | ||
abd63a32 | 4627 | #ifdef TC_M68K |
252b5132 | 4628 | static void |
62ebcb5c | 4629 | parse_mri_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4630 | { |
4631 | if (*input_line_pointer != '\'' | |
4632 | && (input_line_pointer[1] != '\'' | |
4633 | || (*input_line_pointer != 'A' | |
4634 | && *input_line_pointer != 'E'))) | |
1e539319 | 4635 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
252b5132 RH |
4636 | else |
4637 | { | |
4638 | unsigned int scan; | |
4639 | unsigned int result = 0; | |
4640 | ||
4641 | /* An MRI style string. Cut into as many bytes as will fit into | |
4642 | a nbyte chunk, left justify if necessary, and separate with | |
4643 | commas so we can try again later. */ | |
4644 | if (*input_line_pointer == 'A') | |
4645 | ++input_line_pointer; | |
4646 | else if (*input_line_pointer == 'E') | |
4647 | { | |
4648 | as_bad (_("EBCDIC constants are not supported")); | |
4649 | ++input_line_pointer; | |
4650 | } | |
4651 | ||
4652 | input_line_pointer++; | |
4653 | for (scan = 0; scan < nbytes; scan++) | |
4654 | { | |
4655 | if (*input_line_pointer == '\'') | |
4656 | { | |
4657 | if (input_line_pointer[1] == '\'') | |
4658 | { | |
4659 | input_line_pointer++; | |
4660 | } | |
4661 | else | |
4662 | break; | |
4663 | } | |
4664 | result = (result << 8) | (*input_line_pointer++); | |
4665 | } | |
4666 | ||
041ff4dd | 4667 | /* Left justify. */ |
252b5132 RH |
4668 | while (scan < nbytes) |
4669 | { | |
4670 | result <<= 8; | |
4671 | scan++; | |
4672 | } | |
f0e652b4 | 4673 | |
041ff4dd | 4674 | /* Create correct expression. */ |
252b5132 RH |
4675 | exp->X_op = O_constant; |
4676 | exp->X_add_number = result; | |
f0e652b4 | 4677 | |
041ff4dd | 4678 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4679 | if (input_line_pointer[0] != '\'' || |
4680 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4681 | { | |
4682 | input_line_pointer -= 2; | |
4683 | input_line_pointer[0] = ','; | |
4684 | input_line_pointer[1] = '\''; | |
4685 | } | |
4686 | else | |
4687 | input_line_pointer++; | |
4688 | } | |
4689 | } | |
abd63a32 | 4690 | #endif /* TC_M68K */ |
252b5132 RH |
4691 | \f |
4692 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4693 | ||
4694 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4695 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4696 | object file COUNT times. | |
4697 | ||
4698 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4699 | ||
4700 | static void | |
4701 | parse_repeat_cons (exp, nbytes) | |
4702 | expressionS *exp; | |
4703 | unsigned int nbytes; | |
4704 | { | |
4705 | expressionS count; | |
3d540e93 | 4706 | int i; |
252b5132 RH |
4707 | |
4708 | expression (exp); | |
4709 | ||
4710 | if (*input_line_pointer != ':') | |
4711 | { | |
4712 | /* No repeat count. */ | |
4713 | return; | |
4714 | } | |
4715 | ||
4716 | ++input_line_pointer; | |
4717 | expression (&count); | |
4718 | if (count.X_op != O_constant | |
4719 | || count.X_add_number <= 0) | |
4720 | { | |
0e389e77 | 4721 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4722 | return; |
4723 | } | |
4724 | ||
4725 | /* The cons function is going to output this expression once. So we | |
4726 | output it count - 1 times. */ | |
4727 | for (i = count.X_add_number - 1; i > 0; i--) | |
4728 | emit_expr (exp, nbytes); | |
4729 | } | |
4730 | ||
4731 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4732 | \f | |
4733 | /* Parse a floating point number represented as a hex constant. This | |
4734 | permits users to specify the exact bits they want in the floating | |
4735 | point number. */ | |
4736 | ||
4737 | static int | |
39e6acbd | 4738 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4739 | { |
4740 | int length; | |
4741 | int i; | |
4742 | ||
4743 | switch (float_type) | |
4744 | { | |
4745 | case 'f': | |
4746 | case 'F': | |
4747 | case 's': | |
4748 | case 'S': | |
4749 | length = 4; | |
4750 | break; | |
4751 | ||
4752 | case 'd': | |
4753 | case 'D': | |
4754 | case 'r': | |
4755 | case 'R': | |
4756 | length = 8; | |
4757 | break; | |
4758 | ||
4759 | case 'x': | |
4760 | case 'X': | |
4761 | length = 12; | |
4762 | break; | |
4763 | ||
4764 | case 'p': | |
4765 | case 'P': | |
4766 | length = 12; | |
4767 | break; | |
4768 | ||
4769 | default: | |
0e389e77 | 4770 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4771 | return -1; |
4772 | } | |
4773 | ||
4774 | /* It would be nice if we could go through expression to parse the | |
4775 | hex constant, but if we get a bignum it's a pain to sort it into | |
4776 | the buffer correctly. */ | |
4777 | i = 0; | |
4778 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4779 | { | |
4780 | int d; | |
4781 | ||
4782 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4783 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4784 | if (*input_line_pointer == '_') |
4785 | { | |
4786 | ++input_line_pointer; | |
4787 | continue; | |
4788 | } | |
4789 | ||
4790 | if (i >= length) | |
4791 | { | |
0e389e77 | 4792 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4793 | return -1; |
4794 | } | |
4795 | d = hex_value (*input_line_pointer) << 4; | |
4796 | ++input_line_pointer; | |
4797 | while (*input_line_pointer == '_') | |
4798 | ++input_line_pointer; | |
4799 | if (hex_p (*input_line_pointer)) | |
4800 | { | |
4801 | d += hex_value (*input_line_pointer); | |
4802 | ++input_line_pointer; | |
4803 | } | |
4804 | if (target_big_endian) | |
4805 | bytes[i] = d; | |
4806 | else | |
4807 | bytes[length - i - 1] = d; | |
4808 | ++i; | |
4809 | } | |
4810 | ||
4811 | if (i < length) | |
4812 | { | |
4813 | if (target_big_endian) | |
4814 | memset (bytes + i, 0, length - i); | |
4815 | else | |
4816 | memset (bytes, 0, length - i); | |
4817 | } | |
4818 | ||
4819 | return length; | |
4820 | } | |
4821 | ||
d6415f6c | 4822 | /* float_cons() |
f0e652b4 | 4823 | |
041ff4dd NC |
4824 | CONStruct some more frag chars of .floats .ffloats etc. |
4825 | Makes 0 or more new frags. | |
4826 | If need_pass_2 == 1, no frags are emitted. | |
4827 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4828 | |
041ff4dd NC |
4829 | A floating constant is defined by atof_generic(), except it is preceded |
4830 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4831 | reading, I decided to be incompatible. This always tries to give you | |
4832 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4833 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4834 | a choice of 2 flavours of noise according to which of 2 floating-point |
4835 | scanners you directed AS to use. | |
f0e652b4 | 4836 | |
041ff4dd | 4837 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4838 | |
4839 | void | |
39e6acbd | 4840 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4841 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4842 | { |
3d540e93 | 4843 | char *p; |
041ff4dd | 4844 | int length; /* Number of chars in an object. */ |
3d540e93 | 4845 | char *err; /* Error from scanning floating literal. */ |
252b5132 RH |
4846 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4847 | ||
4848 | if (is_it_end_of_statement ()) | |
4849 | { | |
4850 | demand_empty_rest_of_line (); | |
4851 | return; | |
4852 | } | |
4853 | ||
4854 | #ifdef md_flush_pending_output | |
4855 | md_flush_pending_output (); | |
4856 | #endif | |
4857 | ||
cc3f603a JM |
4858 | #ifdef md_cons_align |
4859 | md_cons_align (1); | |
4860 | #endif | |
4861 | ||
252b5132 RH |
4862 | do |
4863 | { | |
041ff4dd | 4864 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4865 | SKIP_WHITESPACE (); |
4866 | ||
4867 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4868 | letter is legal. Someone may invent a "z" format and this routine |
4869 | has no use for such information. Lusers beware: you get | |
4870 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4871 | if (input_line_pointer[0] == '0' |
3882b010 | 4872 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4873 | input_line_pointer += 2; |
4874 | ||
4875 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4876 | point with the exact digits specified. */ |
252b5132 RH |
4877 | if (input_line_pointer[0] == ':') |
4878 | { | |
4879 | ++input_line_pointer; | |
4880 | length = hex_float (float_type, temp); | |
4881 | if (length < 0) | |
4882 | { | |
4883 | ignore_rest_of_line (); | |
4884 | return; | |
4885 | } | |
4886 | } | |
4887 | else | |
4888 | { | |
4889 | err = md_atof (float_type, temp, &length); | |
4890 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4891 | know (err != NULL || length > 0); |
252b5132 RH |
4892 | if (err) |
4893 | { | |
0e389e77 | 4894 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4895 | ignore_rest_of_line (); |
4896 | return; | |
4897 | } | |
4898 | } | |
4899 | ||
4900 | if (!need_pass_2) | |
4901 | { | |
4902 | int count; | |
4903 | ||
4904 | count = 1; | |
4905 | ||
4906 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4907 | if (*input_line_pointer == ':') | |
4908 | { | |
4909 | expressionS count_exp; | |
4910 | ||
4911 | ++input_line_pointer; | |
4912 | expression (&count_exp); | |
f0e652b4 | 4913 | |
252b5132 RH |
4914 | if (count_exp.X_op != O_constant |
4915 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4916 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4917 | else |
4918 | count = count_exp.X_add_number; | |
4919 | } | |
4920 | #endif | |
4921 | ||
4922 | while (--count >= 0) | |
4923 | { | |
4924 | p = frag_more (length); | |
4925 | memcpy (p, temp, (unsigned int) length); | |
4926 | } | |
4927 | } | |
4928 | SKIP_WHITESPACE (); | |
4929 | } | |
4930 | while (*input_line_pointer++ == ','); | |
4931 | ||
041ff4dd NC |
4932 | /* Put terminator back into stream. */ |
4933 | --input_line_pointer; | |
252b5132 | 4934 | demand_empty_rest_of_line (); |
041ff4dd | 4935 | } |
252b5132 | 4936 | \f |
041ff4dd | 4937 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4938 | |
4939 | static inline int | |
39e6acbd | 4940 | sizeof_sleb128 (offsetT value) |
252b5132 | 4941 | { |
3d540e93 NC |
4942 | int size = 0; |
4943 | unsigned byte; | |
252b5132 RH |
4944 | |
4945 | do | |
4946 | { | |
4947 | byte = (value & 0x7f); | |
4948 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4949 | Fortunately, we can structure things so that the extra work reduces | |
4950 | to a noop on systems that do things "properly". */ | |
4951 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4952 | size += 1; | |
4953 | } | |
4954 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4955 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4956 | ||
4957 | return size; | |
4958 | } | |
4959 | ||
4960 | static inline int | |
39e6acbd | 4961 | sizeof_uleb128 (valueT value) |
252b5132 | 4962 | { |
3d540e93 | 4963 | int size = 0; |
252b5132 RH |
4964 | |
4965 | do | |
4966 | { | |
252b5132 RH |
4967 | value >>= 7; |
4968 | size += 1; | |
4969 | } | |
4970 | while (value != 0); | |
4971 | ||
4972 | return size; | |
4973 | } | |
4974 | ||
4975 | int | |
39e6acbd | 4976 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4977 | { |
4978 | if (sign) | |
4979 | return sizeof_sleb128 ((offsetT) value); | |
4980 | else | |
4981 | return sizeof_uleb128 (value); | |
4982 | } | |
4983 | ||
4984 | /* Output a LEB128 value. */ | |
4985 | ||
4986 | static inline int | |
39e6acbd | 4987 | output_sleb128 (char *p, offsetT value) |
252b5132 | 4988 | { |
3d540e93 NC |
4989 | char *orig = p; |
4990 | int more; | |
252b5132 RH |
4991 | |
4992 | do | |
4993 | { | |
4994 | unsigned byte = (value & 0x7f); | |
4995 | ||
4996 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4997 | Fortunately, we can structure things so that the extra work reduces | |
4998 | to a noop on systems that do things "properly". */ | |
4999 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5000 | ||
5001 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
5002 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5003 | if (more) | |
5004 | byte |= 0x80; | |
5005 | ||
5006 | *p++ = byte; | |
5007 | } | |
5008 | while (more); | |
5009 | ||
5010 | return p - orig; | |
5011 | } | |
5012 | ||
5013 | static inline int | |
39e6acbd | 5014 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
5015 | { |
5016 | char *orig = p; | |
5017 | ||
5018 | do | |
5019 | { | |
5020 | unsigned byte = (value & 0x7f); | |
5021 | value >>= 7; | |
5022 | if (value != 0) | |
5023 | /* More bytes to follow. */ | |
5024 | byte |= 0x80; | |
5025 | ||
5026 | *p++ = byte; | |
5027 | } | |
5028 | while (value != 0); | |
5029 | ||
5030 | return p - orig; | |
5031 | } | |
5032 | ||
5033 | int | |
39e6acbd | 5034 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
5035 | { |
5036 | if (sign) | |
5037 | return output_sleb128 (p, (offsetT) value); | |
5038 | else | |
5039 | return output_uleb128 (p, value); | |
5040 | } | |
5041 | ||
5042 | /* Do the same for bignums. We combine sizeof with output here in that | |
5043 | we don't output for NULL values of P. It isn't really as critical as | |
5044 | for "normal" values that this be streamlined. */ | |
5045 | ||
6d4d30bb | 5046 | static inline int |
39e6acbd | 5047 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
5048 | { |
5049 | char *orig = p; | |
5050 | valueT val = 0; | |
5051 | int loaded = 0; | |
5052 | unsigned byte; | |
5053 | ||
5054 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
5055 | while (size > 1 |
5056 | && bignum[size - 1] == LITTLENUM_MASK | |
5057 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
5058 | size--; |
5059 | ||
5060 | do | |
5061 | { | |
e5604d79 RS |
5062 | /* OR in the next part of the littlenum. */ |
5063 | val |= (*bignum << loaded); | |
5064 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
5065 | size--; | |
5066 | bignum++; | |
5067 | ||
5068 | /* Add bytes until there are less than 7 bits left in VAL | |
5069 | or until every non-sign bit has been written. */ | |
5070 | do | |
252b5132 | 5071 | { |
e5604d79 RS |
5072 | byte = val & 0x7f; |
5073 | loaded -= 7; | |
5074 | val >>= 7; | |
5075 | if (size > 0 | |
5076 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 5077 | byte |= 0x80; |
e5604d79 RS |
5078 | |
5079 | if (orig) | |
5080 | *p = byte; | |
5081 | p++; | |
252b5132 | 5082 | } |
e5604d79 RS |
5083 | while ((byte & 0x80) != 0 && loaded >= 7); |
5084 | } | |
5085 | while (size > 0); | |
252b5132 | 5086 | |
e5604d79 RS |
5087 | /* Mop up any left-over bits (of which there will be less than 7). */ |
5088 | if ((byte & 0x80) != 0) | |
5089 | { | |
5090 | /* Sign-extend VAL. */ | |
5091 | if (val & (1 << (loaded - 1))) | |
29798047 | 5092 | val |= ~0U << loaded; |
252b5132 | 5093 | if (orig) |
e5604d79 | 5094 | *p = val & 0x7f; |
252b5132 RH |
5095 | p++; |
5096 | } | |
252b5132 RH |
5097 | |
5098 | return p - orig; | |
5099 | } | |
5100 | ||
6d4d30bb | 5101 | static inline int |
39e6acbd | 5102 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
5103 | { |
5104 | char *orig = p; | |
5105 | valueT val = 0; | |
5106 | int loaded = 0; | |
5107 | unsigned byte; | |
5108 | ||
5109 | /* Strip leading zeros off the bignum. */ | |
5110 | /* XXX: Is this needed? */ | |
041ff4dd | 5111 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
5112 | size--; |
5113 | ||
5114 | do | |
5115 | { | |
5116 | if (loaded < 7 && size > 0) | |
5117 | { | |
5118 | val |= (*bignum << loaded); | |
5119 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5120 | size--; | |
5121 | bignum++; | |
5122 | } | |
5123 | ||
5124 | byte = val & 0x7f; | |
5125 | loaded -= 7; | |
5126 | val >>= 7; | |
5127 | ||
5128 | if (size > 0 || val) | |
5129 | byte |= 0x80; | |
5130 | ||
5131 | if (orig) | |
5132 | *p = byte; | |
5133 | p++; | |
5134 | } | |
5135 | while (byte & 0x80); | |
5136 | ||
5137 | return p - orig; | |
5138 | } | |
5139 | ||
6d4d30bb | 5140 | static int |
39e6acbd | 5141 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
5142 | { |
5143 | if (sign) | |
5144 | return output_big_sleb128 (p, bignum, size); | |
5145 | else | |
5146 | return output_big_uleb128 (p, bignum, size); | |
5147 | } | |
5148 | ||
5149 | /* Generate the appropriate fragments for a given expression to emit a | |
5150 | leb128 value. */ | |
5151 | ||
87c245cc | 5152 | static void |
39e6acbd | 5153 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5154 | { |
5155 | operatorT op = exp->X_op; | |
b7712f8d | 5156 | unsigned int nbytes; |
252b5132 RH |
5157 | |
5158 | if (op == O_absent || op == O_illegal) | |
5159 | { | |
5160 | as_warn (_("zero assumed for missing expression")); | |
5161 | exp->X_add_number = 0; | |
5162 | op = O_constant; | |
5163 | } | |
5164 | else if (op == O_big && exp->X_add_number <= 0) | |
5165 | { | |
0e389e77 | 5166 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5167 | exp->X_add_number = 0; |
5168 | op = O_constant; | |
5169 | } | |
5170 | else if (op == O_register) | |
5171 | { | |
5172 | as_warn (_("register value used as expression")); | |
5173 | op = O_constant; | |
5174 | } | |
e5604d79 RS |
5175 | else if (op == O_constant |
5176 | && sign | |
956a6ba3 | 5177 | && (exp->X_add_number < 0) == !exp->X_extrabit) |
e5604d79 RS |
5178 | { |
5179 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5180 | doesn't reflect the sign of the original value. Convert EXP | |
5181 | to a correctly-extended bignum instead. */ | |
956a6ba3 | 5182 | convert_to_bignum (exp, exp->X_extrabit); |
e5604d79 RS |
5183 | op = O_big; |
5184 | } | |
252b5132 | 5185 | |
67a659f6 RH |
5186 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5187 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5188 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5189 | if (check_eh_frame (exp, &nbytes)) |
5190 | abort (); | |
5191 | ||
371b7465 RH |
5192 | /* Let the backend know that subsequent data may be byte aligned. */ |
5193 | #ifdef md_cons_align | |
5194 | md_cons_align (1); | |
5195 | #endif | |
5196 | ||
252b5132 RH |
5197 | if (op == O_constant) |
5198 | { | |
5199 | /* If we've got a constant, emit the thing directly right now. */ | |
5200 | ||
5201 | valueT value = exp->X_add_number; | |
5202 | int size; | |
5203 | char *p; | |
5204 | ||
5205 | size = sizeof_leb128 (value, sign); | |
5206 | p = frag_more (size); | |
5207 | output_leb128 (p, value, sign); | |
5208 | } | |
5209 | else if (op == O_big) | |
5210 | { | |
5211 | /* O_big is a different sort of constant. */ | |
5212 | ||
5213 | int size; | |
5214 | char *p; | |
5215 | ||
5216 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
5217 | p = frag_more (size); | |
5218 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
5219 | } | |
5220 | else | |
5221 | { | |
041ff4dd | 5222 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5223 | resolve things later. */ |
5224 | ||
041ff4dd | 5225 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5226 | make_expr_symbol (exp), 0, (char *) NULL); |
5227 | } | |
5228 | } | |
5229 | ||
5230 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5231 | ||
5232 | void | |
39e6acbd | 5233 | s_leb128 (int sign) |
252b5132 RH |
5234 | { |
5235 | expressionS exp; | |
5236 | ||
00bbdfe7 BW |
5237 | #ifdef md_flush_pending_output |
5238 | md_flush_pending_output (); | |
5239 | #endif | |
5240 | ||
041ff4dd NC |
5241 | do |
5242 | { | |
5243 | expression (&exp); | |
5244 | emit_leb128_expr (&exp, sign); | |
5245 | } | |
5246 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5247 | |
5248 | input_line_pointer--; | |
5249 | demand_empty_rest_of_line (); | |
5250 | } | |
5251 | \f | |
38a57ae7 NC |
5252 | static void |
5253 | stringer_append_char (int c, int bitsize) | |
5254 | { | |
5255 | if (!target_big_endian) | |
5256 | FRAG_APPEND_1_CHAR (c); | |
5257 | ||
5258 | switch (bitsize) | |
5259 | { | |
5260 | case 64: | |
5261 | FRAG_APPEND_1_CHAR (0); | |
5262 | FRAG_APPEND_1_CHAR (0); | |
5263 | FRAG_APPEND_1_CHAR (0); | |
5264 | FRAG_APPEND_1_CHAR (0); | |
5265 | /* Fall through. */ | |
5266 | case 32: | |
5267 | FRAG_APPEND_1_CHAR (0); | |
5268 | FRAG_APPEND_1_CHAR (0); | |
5269 | /* Fall through. */ | |
5270 | case 16: | |
5271 | FRAG_APPEND_1_CHAR (0); | |
5272 | /* Fall through. */ | |
5273 | case 8: | |
5274 | break; | |
5275 | default: | |
5276 | /* Called with invalid bitsize argument. */ | |
5277 | abort (); | |
5278 | break; | |
5279 | } | |
5280 | if (target_big_endian) | |
5281 | FRAG_APPEND_1_CHAR (c); | |
5282 | } | |
5283 | ||
5284 | /* Worker to do .ascii etc statements. | |
5285 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5286 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5287 | check it. |
5288 | Checks for end-of-line. | |
5289 | BITS_APPENDZERO says how many bits are in a target char. | |
5290 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5291 | |
5292 | void | |
38a57ae7 | 5293 | stringer (int bits_appendzero) |
252b5132 | 5294 | { |
38a57ae7 NC |
5295 | const int bitsize = bits_appendzero & ~7; |
5296 | const int append_zero = bits_appendzero & 1; | |
5297 | unsigned int c; | |
87975d2a | 5298 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5299 | char *start; |
87975d2a | 5300 | #endif |
252b5132 RH |
5301 | |
5302 | #ifdef md_flush_pending_output | |
5303 | md_flush_pending_output (); | |
5304 | #endif | |
5305 | ||
cc3f603a JM |
5306 | #ifdef md_cons_align |
5307 | md_cons_align (1); | |
5308 | #endif | |
5309 | ||
041ff4dd NC |
5310 | /* The following awkward logic is to parse ZERO or more strings, |
5311 | comma separated. Recall a string expression includes spaces | |
5312 | before the opening '\"' and spaces after the closing '\"'. | |
5313 | We fake a leading ',' if there is (supposed to be) | |
5314 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5315 | if (is_it_end_of_statement ()) |
5316 | { | |
041ff4dd NC |
5317 | c = 0; /* Skip loop. */ |
5318 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5319 | } |
5320 | else | |
5321 | { | |
041ff4dd | 5322 | c = ','; /* Do loop. */ |
252b5132 | 5323 | } |
8ac9ba6c NC |
5324 | /* If we have been switched into the abs_section then we |
5325 | will not have an obstack onto which we can hang strings. */ | |
5326 | if (now_seg == absolute_section) | |
5327 | { | |
5328 | as_bad (_("strings must be placed into a section")); | |
5329 | c = 0; | |
5330 | ignore_rest_of_line (); | |
5331 | } | |
d6415f6c | 5332 | |
252b5132 RH |
5333 | while (c == ',' || c == '<' || c == '"') |
5334 | { | |
5335 | SKIP_WHITESPACE (); | |
5336 | switch (*input_line_pointer) | |
5337 | { | |
5338 | case '\"': | |
041ff4dd | 5339 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5340 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5341 | start = input_line_pointer; |
87975d2a | 5342 | #endif |
38a57ae7 | 5343 | |
252b5132 | 5344 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5345 | stringer_append_char (c, bitsize); |
5346 | ||
252b5132 | 5347 | if (append_zero) |
38a57ae7 NC |
5348 | stringer_append_char (0, bitsize); |
5349 | ||
252b5132 RH |
5350 | know (input_line_pointer[-1] == '\"'); |
5351 | ||
87975d2a | 5352 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5353 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5354 | will emit .string with a filename in the .debug section |
5355 | after a sequence of constants. See the comment in | |
5356 | emit_expr for the sequence. emit_expr will set | |
5357 | dwarf_file_string to non-zero if this string might be a | |
5358 | source file name. */ | |
252b5132 RH |
5359 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5360 | dwarf_file_string = 0; | |
5361 | else if (dwarf_file_string) | |
5362 | { | |
5363 | c = input_line_pointer[-1]; | |
5364 | input_line_pointer[-1] = '\0'; | |
5365 | listing_source_file (start); | |
5366 | input_line_pointer[-1] = c; | |
5367 | } | |
252b5132 RH |
5368 | #endif |
5369 | ||
5370 | break; | |
5371 | case '<': | |
5372 | input_line_pointer++; | |
5373 | c = get_single_number (); | |
38a57ae7 | 5374 | stringer_append_char (c, bitsize); |
252b5132 | 5375 | if (*input_line_pointer != '>') |
38a57ae7 NC |
5376 | as_bad (_("expected <nn>")); |
5377 | ||
252b5132 RH |
5378 | input_line_pointer++; |
5379 | break; | |
5380 | case ',': | |
5381 | input_line_pointer++; | |
5382 | break; | |
5383 | } | |
5384 | SKIP_WHITESPACE (); | |
5385 | c = *input_line_pointer; | |
5386 | } | |
5387 | ||
5388 | demand_empty_rest_of_line (); | |
38a57ae7 | 5389 | } |
252b5132 RH |
5390 | \f |
5391 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5392 | high bits set. We'll probably also have trouble with | |
5393 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5394 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5395 | |
041ff4dd | 5396 | unsigned int |
39e6acbd | 5397 | next_char_of_string (void) |
252b5132 | 5398 | { |
3d540e93 | 5399 | unsigned int c; |
252b5132 RH |
5400 | |
5401 | c = *input_line_pointer++ & CHAR_MASK; | |
5402 | switch (c) | |
5403 | { | |
5404 | case '\"': | |
5405 | c = NOT_A_CHAR; | |
5406 | break; | |
5407 | ||
5408 | case '\n': | |
0e389e77 | 5409 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5410 | bump_line_counters (); |
5411 | break; | |
5412 | ||
5413 | #ifndef NO_STRING_ESCAPES | |
5414 | case '\\': | |
5415 | switch (c = *input_line_pointer++) | |
5416 | { | |
5417 | case 'b': | |
5418 | c = '\b'; | |
5419 | break; | |
5420 | ||
5421 | case 'f': | |
5422 | c = '\f'; | |
5423 | break; | |
5424 | ||
5425 | case 'n': | |
5426 | c = '\n'; | |
5427 | break; | |
5428 | ||
5429 | case 'r': | |
5430 | c = '\r'; | |
5431 | break; | |
5432 | ||
5433 | case 't': | |
5434 | c = '\t'; | |
5435 | break; | |
5436 | ||
5437 | case 'v': | |
5438 | c = '\013'; | |
5439 | break; | |
5440 | ||
5441 | case '\\': | |
5442 | case '"': | |
041ff4dd | 5443 | break; /* As itself. */ |
252b5132 RH |
5444 | |
5445 | case '0': | |
5446 | case '1': | |
5447 | case '2': | |
5448 | case '3': | |
5449 | case '4': | |
5450 | case '5': | |
5451 | case '6': | |
5452 | case '7': | |
5453 | case '8': | |
5454 | case '9': | |
5455 | { | |
5456 | long number; | |
5457 | int i; | |
5458 | ||
041ff4dd | 5459 | for (i = 0, number = 0; |
3882b010 | 5460 | ISDIGIT (c) && i < 3; |
041ff4dd | 5461 | c = *input_line_pointer++, i++) |
252b5132 RH |
5462 | { |
5463 | number = number * 8 + c - '0'; | |
5464 | } | |
f0e652b4 | 5465 | |
252b5132 RH |
5466 | c = number & 0xff; |
5467 | } | |
5468 | --input_line_pointer; | |
5469 | break; | |
5470 | ||
5471 | case 'x': | |
5472 | case 'X': | |
5473 | { | |
5474 | long number; | |
5475 | ||
5476 | number = 0; | |
5477 | c = *input_line_pointer++; | |
3882b010 | 5478 | while (ISXDIGIT (c)) |
252b5132 | 5479 | { |
3882b010 | 5480 | if (ISDIGIT (c)) |
252b5132 | 5481 | number = number * 16 + c - '0'; |
3882b010 | 5482 | else if (ISUPPER (c)) |
252b5132 RH |
5483 | number = number * 16 + c - 'A' + 10; |
5484 | else | |
5485 | number = number * 16 + c - 'a' + 10; | |
5486 | c = *input_line_pointer++; | |
5487 | } | |
5488 | c = number & 0xff; | |
5489 | --input_line_pointer; | |
5490 | } | |
5491 | break; | |
5492 | ||
5493 | case '\n': | |
041ff4dd | 5494 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5495 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5496 | c = '\n'; |
5497 | bump_line_counters (); | |
5498 | break; | |
5499 | ||
5500 | default: | |
5501 | ||
5502 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5503 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5504 | c = '?'; |
5505 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5506 | ||
5507 | break; | |
041ff4dd | 5508 | } |
252b5132 RH |
5509 | break; |
5510 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
5511 | ||
5512 | default: | |
5513 | break; | |
041ff4dd | 5514 | } |
252b5132 | 5515 | return (c); |
041ff4dd | 5516 | } |
252b5132 RH |
5517 | \f |
5518 | static segT | |
3d540e93 | 5519 | get_segmented_expression (expressionS *expP) |
252b5132 | 5520 | { |
3d540e93 | 5521 | segT retval; |
252b5132 RH |
5522 | |
5523 | retval = expression (expP); | |
5524 | if (expP->X_op == O_illegal | |
5525 | || expP->X_op == O_absent | |
5526 | || expP->X_op == O_big) | |
5527 | { | |
0e389e77 | 5528 | as_bad (_("expected address expression")); |
252b5132 RH |
5529 | expP->X_op = O_constant; |
5530 | expP->X_add_number = 0; | |
5531 | retval = absolute_section; | |
5532 | } | |
5533 | return retval; | |
5534 | } | |
5535 | ||
041ff4dd | 5536 | static segT |
3d540e93 | 5537 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5538 | { |
259af69e | 5539 | segT retval = get_segmented_expression (expP); |
252b5132 | 5540 | |
259af69e | 5541 | if (retval == undefined_section) |
252b5132 RH |
5542 | { |
5543 | /* There is no easy way to extract the undefined symbol from the | |
5544 | expression. */ | |
5545 | if (expP->X_add_symbol != NULL | |
5546 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5547 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5548 | S_GET_NAME (expP->X_add_symbol)); | |
5549 | else | |
5550 | as_warn (_("some symbol undefined; zero assumed")); | |
5551 | retval = absolute_section; | |
5552 | expP->X_op = O_constant; | |
5553 | expP->X_add_number = 0; | |
5554 | } | |
259af69e | 5555 | return retval; |
041ff4dd | 5556 | } |
252b5132 | 5557 | |
041ff4dd | 5558 | char /* Return terminator. */ |
39e6acbd | 5559 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5560 | { |
5561 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5562 | *val_pointer = (long) get_absolute_expression (); | |
5563 | return (*input_line_pointer++); | |
5564 | } | |
5565 | \f | |
041ff4dd NC |
5566 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5567 | Give a warning if that happens. */ | |
5568 | ||
252b5132 | 5569 | char * |
39e6acbd | 5570 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5571 | { |
3d540e93 | 5572 | char *s; |
252b5132 RH |
5573 | |
5574 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5575 | { | |
3d540e93 | 5576 | int len; |
252b5132 RH |
5577 | |
5578 | for (len = *len_pointer; len > 0; len--) | |
5579 | { | |
5580 | if (*s == 0) | |
5581 | { | |
5582 | s = 0; | |
5583 | len = 1; | |
5584 | *len_pointer = 0; | |
0e389e77 | 5585 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5586 | } |
5587 | } | |
5588 | } | |
f0e652b4 | 5589 | |
252b5132 RH |
5590 | return s; |
5591 | } | |
5592 | \f | |
041ff4dd NC |
5593 | /* Demand string, but return a safe (=private) copy of the string. |
5594 | Return NULL if we can't read a string here. */ | |
5595 | ||
252b5132 | 5596 | char * |
39e6acbd | 5597 | demand_copy_string (int *lenP) |
252b5132 | 5598 | { |
3d540e93 NC |
5599 | unsigned int c; |
5600 | int len; | |
252b5132 RH |
5601 | char *retval; |
5602 | ||
5603 | len = 0; | |
5604 | SKIP_WHITESPACE (); | |
5605 | if (*input_line_pointer == '\"') | |
5606 | { | |
041ff4dd | 5607 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5608 | |
5609 | while (is_a_char (c = next_char_of_string ())) | |
5610 | { | |
5611 | obstack_1grow (¬es, c); | |
5612 | len++; | |
5613 | } | |
5614 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5615 | null terminated string. */ |
252b5132 | 5616 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5617 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5618 | } |
5619 | else | |
5620 | { | |
c95b35a9 | 5621 | as_bad (_("missing string")); |
252b5132 RH |
5622 | retval = NULL; |
5623 | ignore_rest_of_line (); | |
5624 | } | |
5625 | *lenP = len; | |
5626 | return (retval); | |
041ff4dd | 5627 | } |
252b5132 | 5628 | \f |
041ff4dd | 5629 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5630 | |
041ff4dd | 5631 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5632 | |
041ff4dd NC |
5633 | Out: 1 if input_line_pointer->end-of-line. */ |
5634 | ||
5635 | int | |
39e6acbd | 5636 | is_it_end_of_statement (void) |
252b5132 RH |
5637 | { |
5638 | SKIP_WHITESPACE (); | |
5639 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5640 | } |
252b5132 | 5641 | |
041ff4dd | 5642 | void |
39e6acbd | 5643 | equals (char *sym_name, int reassign) |
252b5132 | 5644 | { |
252b5132 | 5645 | char *stop = NULL; |
fb25138b | 5646 | char stopc = 0; |
252b5132 RH |
5647 | |
5648 | input_line_pointer++; | |
5649 | if (*input_line_pointer == '=') | |
5650 | input_line_pointer++; | |
9497f5ac NC |
5651 | if (reassign < 0 && *input_line_pointer == '=') |
5652 | input_line_pointer++; | |
252b5132 RH |
5653 | |
5654 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5655 | input_line_pointer++; | |
5656 | ||
5657 | if (flag_mri) | |
5658 | stop = mri_comment_field (&stopc); | |
5659 | ||
9497f5ac | 5660 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5661 | |
5662 | if (flag_mri) | |
31d20a21 AM |
5663 | { |
5664 | demand_empty_rest_of_line (); | |
5665 | mri_comment_end (stop, stopc); | |
5666 | } | |
041ff4dd | 5667 | } |
252b5132 | 5668 | |
7e005732 NC |
5669 | /* .incbin -- include a file verbatim at the current location. */ |
5670 | ||
5671 | void | |
39e6acbd | 5672 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5673 | { |
5674 | FILE * binfile; | |
5675 | char * path; | |
5676 | char * filename; | |
5677 | char * binfrag; | |
5678 | long skip = 0; | |
5679 | long count = 0; | |
5680 | long bytes; | |
5681 | int len; | |
5682 | ||
5683 | #ifdef md_flush_pending_output | |
5684 | md_flush_pending_output (); | |
5685 | #endif | |
5686 | ||
cc3f603a JM |
5687 | #ifdef md_cons_align |
5688 | md_cons_align (1); | |
5689 | #endif | |
5690 | ||
7e005732 NC |
5691 | SKIP_WHITESPACE (); |
5692 | filename = demand_copy_string (& len); | |
5693 | if (filename == NULL) | |
5694 | return; | |
5695 | ||
5696 | SKIP_WHITESPACE (); | |
5697 | ||
5698 | /* Look for optional skip and count. */ | |
5699 | if (* input_line_pointer == ',') | |
5700 | { | |
5701 | ++ input_line_pointer; | |
5702 | skip = get_absolute_expression (); | |
5703 | ||
5704 | SKIP_WHITESPACE (); | |
5705 | ||
5706 | if (* input_line_pointer == ',') | |
5707 | { | |
5708 | ++ input_line_pointer; | |
5709 | ||
5710 | count = get_absolute_expression (); | |
5711 | if (count == 0) | |
5712 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5713 | ||
5714 | SKIP_WHITESPACE (); | |
5715 | } | |
5716 | } | |
5717 | ||
5718 | demand_empty_rest_of_line (); | |
5719 | ||
5720 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5721 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5722 | if (binfile == NULL) |
5723 | { | |
5724 | int i; | |
5725 | ||
1e9cc1c2 | 5726 | path = (char *) xmalloc ((unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5727 | |
5728 | for (i = 0; i < include_dir_count; i++) | |
5729 | { | |
5730 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5731 | ||
f740e790 | 5732 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5733 | if (binfile != NULL) |
5734 | break; | |
5735 | } | |
5736 | ||
5737 | if (binfile == NULL) | |
5738 | as_bad (_("file not found: %s"), filename); | |
5739 | } | |
5740 | else | |
5741 | path = xstrdup (filename); | |
5742 | ||
5743 | if (binfile) | |
5744 | { | |
f740e790 NC |
5745 | long file_len; |
5746 | ||
7e005732 NC |
5747 | register_dependency (path); |
5748 | ||
5749 | /* Compute the length of the file. */ | |
5750 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5751 | { | |
5752 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5753 | goto done; | |
5754 | } | |
f740e790 | 5755 | file_len = ftell (binfile); |
7e005732 | 5756 | |
c556cc9c | 5757 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5758 | if (count == 0) |
c556cc9c | 5759 | count = file_len - skip; |
7e005732 | 5760 | |
c556cc9c | 5761 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5762 | { |
c556cc9c | 5763 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5764 | skip, count, file_len); |
7e005732 NC |
5765 | goto done; |
5766 | } | |
5767 | ||
5768 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5769 | { | |
5770 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5771 | goto done; | |
5772 | } | |
5773 | ||
5774 | /* Allocate frag space and store file contents in it. */ | |
5775 | binfrag = frag_more (count); | |
5776 | ||
5777 | bytes = fread (binfrag, 1, count, binfile); | |
5778 | if (bytes < count) | |
5779 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5780 | path, bytes, count); | |
5781 | } | |
5782 | done: | |
5783 | if (binfile != NULL) | |
5784 | fclose (binfile); | |
5785 | if (path) | |
5786 | free (path); | |
5787 | } | |
5788 | ||
041ff4dd | 5789 | /* .include -- include a file at this point. */ |
252b5132 | 5790 | |
041ff4dd | 5791 | void |
39e6acbd | 5792 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5793 | { |
252b5132 RH |
5794 | char *filename; |
5795 | int i; | |
1e9cc1c2 | 5796 | FILE *try_file; |
252b5132 RH |
5797 | char *path; |
5798 | ||
041ff4dd | 5799 | if (!flag_m68k_mri) |
252b5132 RH |
5800 | { |
5801 | filename = demand_copy_string (&i); | |
5802 | if (filename == NULL) | |
5803 | { | |
5804 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5805 | called ignore_rest_of_line. */ |
252b5132 RH |
5806 | return; |
5807 | } | |
5808 | } | |
5809 | else | |
5810 | { | |
5811 | SKIP_WHITESPACE (); | |
5812 | i = 0; | |
041ff4dd | 5813 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5814 | && *input_line_pointer != ' ' |
5815 | && *input_line_pointer != '\t') | |
5816 | { | |
5817 | obstack_1grow (¬es, *input_line_pointer); | |
5818 | ++input_line_pointer; | |
5819 | ++i; | |
5820 | } | |
f0e652b4 | 5821 | |
252b5132 | 5822 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5823 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5824 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5825 | ++input_line_pointer; |
5826 | } | |
f0e652b4 | 5827 | |
252b5132 | 5828 | demand_empty_rest_of_line (); |
1e9cc1c2 | 5829 | path = (char *) xmalloc ((unsigned long) i |
fa94de6b | 5830 | + include_dir_maxlen + 5 /* slop */ ); |
f0e652b4 | 5831 | |
252b5132 RH |
5832 | for (i = 0; i < include_dir_count; i++) |
5833 | { | |
5834 | strcpy (path, include_dirs[i]); | |
5835 | strcat (path, "/"); | |
5836 | strcat (path, filename); | |
1e9cc1c2 | 5837 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 5838 | { |
1e9cc1c2 | 5839 | fclose (try_file); |
252b5132 RH |
5840 | goto gotit; |
5841 | } | |
5842 | } | |
f0e652b4 | 5843 | |
252b5132 RH |
5844 | free (path); |
5845 | path = filename; | |
5846 | gotit: | |
041ff4dd | 5847 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5848 | register_dependency (path); |
9f10757c | 5849 | input_scrub_insert_file (path); |
041ff4dd | 5850 | } |
252b5132 | 5851 | |
041ff4dd | 5852 | void |
39e6acbd | 5853 | add_include_dir (char *path) |
252b5132 RH |
5854 | { |
5855 | int i; | |
5856 | ||
5857 | if (include_dir_count == 0) | |
5858 | { | |
5859 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5860 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5861 | include_dir_count = 2; |
5862 | } | |
5863 | else | |
5864 | { | |
5865 | include_dir_count++; | |
041ff4dd | 5866 | include_dirs = |
b2e951ec NC |
5867 | (char **) xrealloc (include_dirs, |
5868 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5869 | } |
5870 | ||
041ff4dd | 5871 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5872 | |
5873 | i = strlen (path); | |
5874 | if (i > include_dir_maxlen) | |
5875 | include_dir_maxlen = i; | |
041ff4dd | 5876 | } |
252b5132 RH |
5877 | \f |
5878 | /* Output debugging information to denote the source file. */ | |
5879 | ||
5880 | static void | |
39e6acbd | 5881 | generate_file_debug (void) |
252b5132 RH |
5882 | { |
5883 | if (debug_type == DEBUG_STABS) | |
5884 | stabs_generate_asm_file (); | |
5885 | } | |
5886 | ||
5887 | /* Output line number debugging information for the current source line. */ | |
5888 | ||
5889 | void | |
39e6acbd | 5890 | generate_lineno_debug (void) |
252b5132 | 5891 | { |
252b5132 RH |
5892 | switch (debug_type) |
5893 | { | |
5894 | case DEBUG_UNSPECIFIED: | |
5895 | case DEBUG_NONE: | |
4dc7ead9 | 5896 | case DEBUG_DWARF: |
252b5132 RH |
5897 | break; |
5898 | case DEBUG_STABS: | |
5899 | stabs_generate_asm_lineno (); | |
5900 | break; | |
5901 | case DEBUG_ECOFF: | |
5902 | ecoff_generate_asm_lineno (); | |
5903 | break; | |
252b5132 | 5904 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5905 | /* ??? We could here indicate to dwarf2dbg.c that something |
5906 | has changed. However, since there is additional backend | |
5907 | support that is required (calling dwarf2_emit_insn), we | |
5908 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5909 | break; |
5910 | } | |
5911 | } | |
5912 | ||
5913 | /* Output debugging information to mark a function entry point or end point. | |
5914 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5915 | ||
5916 | void | |
39e6acbd | 5917 | s_func (int end_p) |
252b5132 RH |
5918 | { |
5919 | do_s_func (end_p, NULL); | |
5920 | } | |
5921 | ||
5922 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5923 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5924 | ||
87c245cc | 5925 | static void |
39e6acbd | 5926 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5927 | { |
5928 | /* Record the current function so that we can issue an error message for | |
5929 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5930 | arguments. */ | |
5931 | static char *current_name; | |
5932 | static char *current_label; | |
5933 | ||
5934 | if (end_p) | |
5935 | { | |
5936 | if (current_name == NULL) | |
5937 | { | |
5938 | as_bad (_("missing .func")); | |
5939 | ignore_rest_of_line (); | |
5940 | return; | |
5941 | } | |
5942 | ||
5943 | if (debug_type == DEBUG_STABS) | |
5944 | stabs_generate_asm_endfunc (current_name, current_label); | |
5945 | ||
5946 | current_name = current_label = NULL; | |
5947 | } | |
5948 | else /* ! end_p */ | |
5949 | { | |
041ff4dd NC |
5950 | char *name, *label; |
5951 | char delim1, delim2; | |
252b5132 RH |
5952 | |
5953 | if (current_name != NULL) | |
5954 | { | |
5955 | as_bad (_(".endfunc missing for previous .func")); | |
5956 | ignore_rest_of_line (); | |
5957 | return; | |
5958 | } | |
5959 | ||
5960 | name = input_line_pointer; | |
5961 | delim1 = get_symbol_end (); | |
5962 | name = xstrdup (name); | |
5963 | *input_line_pointer = delim1; | |
5964 | SKIP_WHITESPACE (); | |
5965 | if (*input_line_pointer != ',') | |
5966 | { | |
5967 | if (default_prefix) | |
05f4ab67 AM |
5968 | { |
5969 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
5970 | as_fatal ("%s", xstrerror (errno)); | |
5971 | } | |
252b5132 RH |
5972 | else |
5973 | { | |
7be1c489 | 5974 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
5975 | /* Missing entry point, use function's name with the leading |
5976 | char prepended. */ | |
5977 | if (leading_char) | |
05f4ab67 AM |
5978 | { |
5979 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
5980 | as_fatal ("%s", xstrerror (errno)); | |
5981 | } | |
252b5132 RH |
5982 | else |
5983 | label = name; | |
5984 | } | |
5985 | } | |
5986 | else | |
5987 | { | |
5988 | ++input_line_pointer; | |
5989 | SKIP_WHITESPACE (); | |
5990 | label = input_line_pointer; | |
5991 | delim2 = get_symbol_end (); | |
5992 | label = xstrdup (label); | |
5993 | *input_line_pointer = delim2; | |
5994 | } | |
5995 | ||
5996 | if (debug_type == DEBUG_STABS) | |
5997 | stabs_generate_asm_func (name, label); | |
5998 | ||
5999 | current_name = name; | |
6000 | current_label = label; | |
6001 | } | |
6002 | ||
6003 | demand_empty_rest_of_line (); | |
6004 | } | |
6005 | \f | |
fa94de6b RM |
6006 | #ifdef HANDLE_BUNDLE |
6007 | ||
6008 | void | |
6009 | s_bundle_align_mode (int arg ATTRIBUTE_UNUSED) | |
6010 | { | |
6011 | unsigned int align = get_absolute_expression (); | |
6012 | SKIP_WHITESPACE (); | |
6013 | demand_empty_rest_of_line (); | |
6014 | ||
6015 | if (align > (unsigned int) TC_ALIGN_LIMIT) | |
6016 | as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"), | |
6017 | (unsigned int) TC_ALIGN_LIMIT); | |
6018 | ||
6019 | if (bundle_lock_frag != NULL) | |
6020 | { | |
6021 | as_bad (_("cannot change .bundle_align_mode inside .bundle_lock")); | |
6022 | return; | |
6023 | } | |
6024 | ||
6025 | bundle_align_p2 = align; | |
6026 | } | |
6027 | ||
6028 | void | |
6029 | s_bundle_lock (int arg ATTRIBUTE_UNUSED) | |
6030 | { | |
6031 | demand_empty_rest_of_line (); | |
6032 | ||
6033 | if (bundle_align_p2 == 0) | |
6034 | { | |
6035 | as_bad (_(".bundle_lock is meaningless without .bundle_align_mode")); | |
6036 | return; | |
6037 | } | |
6038 | ||
d416e51d | 6039 | if (bundle_lock_depth == 0) |
fa94de6b | 6040 | { |
d416e51d RM |
6041 | bundle_lock_frchain = frchain_now; |
6042 | bundle_lock_frag = start_bundle (); | |
fa94de6b | 6043 | } |
d416e51d | 6044 | ++bundle_lock_depth; |
fa94de6b RM |
6045 | } |
6046 | ||
6047 | void | |
6048 | s_bundle_unlock (int arg ATTRIBUTE_UNUSED) | |
6049 | { | |
6050 | unsigned int size; | |
6051 | ||
6052 | demand_empty_rest_of_line (); | |
6053 | ||
6054 | if (bundle_lock_frag == NULL) | |
6055 | { | |
6056 | as_bad (_(".bundle_unlock without preceding .bundle_lock")); | |
6057 | return; | |
6058 | } | |
6059 | ||
6060 | gas_assert (bundle_align_p2 > 0); | |
6061 | ||
d416e51d RM |
6062 | gas_assert (bundle_lock_depth > 0); |
6063 | if (--bundle_lock_depth > 0) | |
6064 | return; | |
6065 | ||
fa94de6b RM |
6066 | size = pending_bundle_size (bundle_lock_frag); |
6067 | ||
6068 | if (size > (1U << bundle_align_p2)) | |
6069 | as_bad (_(".bundle_lock sequence is %u bytes, but bundle size only %u"), | |
6070 | size, 1 << bundle_align_p2); | |
6071 | else | |
6072 | finish_bundle (bundle_lock_frag, size); | |
6073 | ||
6074 | bundle_lock_frag = NULL; | |
6075 | bundle_lock_frchain = NULL; | |
6076 | } | |
6077 | ||
6078 | #endif /* HANDLE_BUNDLE */ | |
6079 | \f | |
041ff4dd | 6080 | void |
39e6acbd | 6081 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6082 | { |
40a4d956 | 6083 | ignore_rest_of_line (); |
252b5132 RH |
6084 | } |
6085 | ||
252b5132 | 6086 | void |
39e6acbd | 6087 | read_print_statistics (FILE *file) |
252b5132 RH |
6088 | { |
6089 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
6090 | } | |
6091 | ||
041ff4dd NC |
6092 | /* Inserts the given line into the input stream. |
6093 | ||
9f10757c TW |
6094 | This call avoids macro/conditionals nesting checking, since the contents of |
6095 | the line are assumed to replace the contents of a line already scanned. | |
6096 | ||
47eebc20 | 6097 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
6098 | called by md_start_line_hook(). The given line is assumed to already be |
6099 | properly scrubbed. */ | |
6100 | ||
6101 | void | |
39e6acbd | 6102 | input_scrub_insert_line (const char *line) |
9f10757c TW |
6103 | { |
6104 | sb newline; | |
d2ae702c L |
6105 | size_t len = strlen (line); |
6106 | sb_build (&newline, len); | |
6107 | sb_add_buffer (&newline, line, len); | |
9f10757c TW |
6108 | input_scrub_include_sb (&newline, input_line_pointer, 0); |
6109 | sb_kill (&newline); | |
6110 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6111 | } | |
6112 | ||
6113 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 6114 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
6115 | |
6116 | void | |
39e6acbd | 6117 | input_scrub_insert_file (char *path) |
9f10757c TW |
6118 | { |
6119 | input_scrub_include_file (path, input_line_pointer); | |
6120 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6121 | } | |
40a4d956 JB |
6122 | |
6123 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
6124 | ||
6125 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
6126 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
6127 | #endif | |
6128 | ||
6129 | static char * | |
7592cfd7 NC |
6130 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
6131 | int in_macro) | |
40a4d956 JB |
6132 | { |
6133 | char inquote = '\0'; | |
6134 | int inescape = 0; | |
6135 | ||
6136 | while (!is_end_of_line[(unsigned char) *s] | |
6137 | || (inquote && !ISCNTRL (*s)) | |
6138 | || (inquote == '\'' && flag_mri) | |
6139 | #ifdef TC_EOL_IN_INSN | |
6140 | || (insn && TC_EOL_IN_INSN (s)) | |
6141 | #endif | |
7592cfd7 NC |
6142 | /* PR 6926: When we are parsing the body of a macro the sequence |
6143 | \@ is special - it refers to the invocation count. If the @ | |
6144 | character happens to be registered as a line-separator character | |
6145 | by the target, then the is_end_of_line[] test above will have | |
6146 | returned true, but we need to ignore the line separating | |
6147 | semantics in this particular case. */ | |
6148 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
6149 | ) |
6150 | { | |
6151 | if (mri_string && *s == '\'') | |
6152 | inquote ^= *s; | |
6153 | else if (inescape) | |
6154 | inescape = 0; | |
6155 | else if (*s == '\\') | |
6156 | inescape = 1; | |
6157 | else if (!inquote | |
6158 | ? *s == '"' | |
6159 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
6160 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
6161 | #endif | |
6162 | : *s == inquote) | |
6163 | inquote ^= *s; | |
6164 | ++s; | |
6165 | } | |
6166 | if (inquote) | |
6167 | as_warn (_("missing closing `%c'"), inquote); | |
e74211b6 | 6168 | if (inescape && !ignore_input ()) |
40a4d956 JB |
6169 | as_warn (_("stray `\\'")); |
6170 | return s; | |
6171 | } | |
6172 | ||
6173 | char * | |
6174 | find_end_of_line (char *s, int mri_string) | |
6175 | { | |
7592cfd7 | 6176 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 6177 | } |