Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
219d1afa | 2 | Copyright (C) 1986-2018 Free Software Foundation, Inc. |
252b5132 | 3 | |
ec2655a6 | 4 | This file is part of GAS, the GNU Assembler. |
252b5132 | 5 | |
ec2655a6 NC |
6 | GAS is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
252b5132 | 10 | |
ec2655a6 NC |
11 | GAS is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
252b5132 | 15 | |
ec2655a6 NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
252b5132 | 20 | |
59c871b4 | 21 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
33eaf5de | 22 | But then, GNU isn't supposed to run on your machine anyway. |
041ff4dd | 23 | (RMS is so shortsighted sometimes.) */ |
041ff4dd | 24 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 25 | |
252b5132 | 26 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 27 | grow when we do 4361 style flonums. */ |
252b5132 RH |
28 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
29 | ||
47eebc20 | 30 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
31 | Another group of these functions is in the expr.c module. */ |
32 | ||
252b5132 | 33 | #include "as.h" |
3882b010 | 34 | #include "safe-ctype.h" |
252b5132 RH |
35 | #include "subsegs.h" |
36 | #include "sb.h" | |
37 | #include "macro.h" | |
38 | #include "obstack.h" | |
252b5132 | 39 | #include "ecoff.h" |
54cfded0 | 40 | #include "dw2gencfi.h" |
7bfd842d | 41 | #include "wchar.h" |
252b5132 RH |
42 | |
43 | #ifndef TC_START_LABEL | |
2e57ce7b | 44 | #define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR) (NEXT_CHAR == ':') |
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. */ |
2469b3c5 | 65 | bfd_boolean input_from_string = FALSE; |
252b5132 RH |
66 | |
67 | #if BITS_PER_CHAR != 8 | |
68 | /* The following table is indexed by[(char)] and will break if | |
69 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
70 | die horribly; | |
71 | #endif | |
72 | ||
73 | #ifndef LEX_AT | |
252b5132 RH |
74 | #define LEX_AT 0 |
75 | #endif | |
76 | ||
77 | #ifndef LEX_BR | |
78 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
79 | #define LEX_BR 0 | |
80 | #endif | |
81 | ||
82 | #ifndef LEX_PCT | |
83 | /* The Delta 68k assembler permits % inside label names. */ | |
84 | #define LEX_PCT 0 | |
85 | #endif | |
86 | ||
87 | #ifndef LEX_QM | |
88 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
89 | #define LEX_QM 0 | |
90 | #endif | |
91 | ||
58b5739a | 92 | #ifndef LEX_HASH |
800eeca4 JW |
93 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
94 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
95 | #define LEX_HASH 0 |
96 | #endif | |
97 | ||
252b5132 | 98 | #ifndef LEX_DOLLAR |
252b5132 RH |
99 | #define LEX_DOLLAR 3 |
100 | #endif | |
101 | ||
102 | #ifndef LEX_TILDE | |
103 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
104 | #define LEX_TILDE 0 | |
105 | #endif | |
106 | ||
041ff4dd | 107 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 108 | char lex_type[256] = { |
252b5132 RH |
109 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
110 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 111 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
112 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
113 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
114 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
115 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 116 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
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 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
125 | }; | |
126 | ||
041ff4dd | 127 | /* In: a character. |
d67ffd56 L |
128 | Out: 1 if this character ends a line. |
129 | 2 if this character is a line separator. */ | |
ef99799a | 130 | char is_end_of_line[256] = { |
252b5132 | 131 | #ifdef CR_EOL |
b75c0c92 | 132 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 133 | #else |
b75c0c92 | 134 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 135 | #endif |
b75c0c92 AM |
136 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
137 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
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, /* */ | |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
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, /* */ | |
150 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 151 | }; |
252b5132 | 152 | |
a8a3b3b2 | 153 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
154 | char original_case_string[128]; |
155 | #endif | |
156 | ||
041ff4dd | 157 | /* Functions private to this file. */ |
252b5132 | 158 | |
041ff4dd NC |
159 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
160 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 161 | |
041ff4dd NC |
162 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
163 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
164 | internals manual. */ | |
252b5132 RH |
165 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
166 | ||
041ff4dd | 167 | /* Variables for handling include file directory table. */ |
252b5132 | 168 | |
041ff4dd | 169 | /* Table of pointers to directories to search for .include's. */ |
e0471c16 | 170 | const char **include_dirs; |
041ff4dd NC |
171 | |
172 | /* How many are in the table. */ | |
173 | int include_dir_count; | |
174 | ||
175 | /* Length of longest in table. */ | |
176 | int include_dir_maxlen = 1; | |
252b5132 RH |
177 | |
178 | #ifndef WORKING_DOT_WORD | |
179 | struct broken_word *broken_words; | |
180 | int new_broken_words; | |
181 | #endif | |
182 | ||
183 | /* The current offset into the absolute section. We don't try to | |
184 | build frags in the absolute section, since no data can be stored | |
185 | there. We just keep track of the current offset. */ | |
186 | addressT abs_section_offset; | |
187 | ||
188 | /* If this line had an MRI style label, it is stored in this variable. | |
189 | This is used by some of the MRI pseudo-ops. */ | |
190 | symbolS *line_label; | |
191 | ||
192 | /* This global variable is used to support MRI common sections. We | |
193 | translate such sections into a common symbol. This variable is | |
194 | non-NULL when we are in an MRI common section. */ | |
195 | symbolS *mri_common_symbol; | |
196 | ||
197 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
198 | need to align to an even byte boundary unless the next pseudo-op is | |
199 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
200 | may be needed. */ | |
201 | static int mri_pending_align; | |
202 | ||
203 | #ifndef NO_LISTING | |
204 | #ifdef OBJ_ELF | |
205 | /* This variable is set to be non-zero if the next string we see might | |
206 | be the name of the source file in DWARF debugging information. See | |
207 | the comment in emit_expr for the format we look for. */ | |
208 | static int dwarf_file_string; | |
209 | #endif | |
210 | #endif | |
211 | ||
fa94de6b RM |
212 | /* If the target defines the md_frag_max_var hook then we know |
213 | enough to implement the .bundle_align_mode features. */ | |
214 | #ifdef md_frag_max_var | |
215 | # define HANDLE_BUNDLE | |
216 | #endif | |
217 | ||
218 | #ifdef HANDLE_BUNDLE | |
219 | /* .bundle_align_mode sets this. Normally it's zero. When nonzero, | |
220 | it's the exponent of the bundle size, and aligned instruction bundle | |
221 | mode is in effect. */ | |
222 | static unsigned int bundle_align_p2; | |
223 | ||
224 | /* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets | |
225 | bundle_lock_frag to frag_now and then starts a new frag with | |
226 | frag_align_code. At the same time, bundle_lock_frain gets frchain_now, | |
227 | so that .bundle_unlock can verify that we didn't change segments. | |
228 | .bundle_unlock resets both to NULL. If we detect a bundling violation, | |
229 | then we reset bundle_lock_frchain to NULL as an indicator that we've | |
230 | already diagnosed the error with as_bad and don't need a cascade of | |
231 | redundant errors, but bundle_lock_frag remains set to indicate that | |
232 | we are expecting to see .bundle_unlock. */ | |
233 | static fragS *bundle_lock_frag; | |
234 | static frchainS *bundle_lock_frchain; | |
d416e51d RM |
235 | |
236 | /* This is incremented by .bundle_lock and decremented by .bundle_unlock, | |
237 | to allow nesting. */ | |
238 | static unsigned int bundle_lock_depth; | |
fa94de6b RM |
239 | #endif |
240 | ||
87c245cc | 241 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd | 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 | 419 | {"nopage", listing_nopage, 0}, |
8f065d3b | 420 | {"nops", s_nops, 0}, |
252b5132 RH |
421 | {"octa", cons, 16}, |
422 | {"offset", s_struct, 0}, | |
423 | {"org", s_org, 0}, | |
424 | {"p2align", s_align_ptwo, 0}, | |
425 | {"p2alignw", s_align_ptwo, -2}, | |
426 | {"p2alignl", s_align_ptwo, -4}, | |
427 | {"page", listing_eject, 0}, | |
428 | {"plen", listing_psize, 0}, | |
429 | {"print", s_print, 0}, | |
041ff4dd | 430 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
431 | {"purgem", s_purgem, 0}, |
432 | {"quad", cons, 8}, | |
05e9452c | 433 | {"reloc", s_reloc, 0}, |
252b5132 RH |
434 | {"rep", s_rept, 0}, |
435 | {"rept", s_rept, 0}, | |
436 | {"rva", s_rva, 4}, | |
041ff4dd NC |
437 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
438 | /* scl */ | |
439 | /* sect */ | |
252b5132 RH |
440 | {"set", s_set, 0}, |
441 | {"short", cons, 2}, | |
442 | {"single", float_cons, 'f'}, | |
041ff4dd | 443 | /* size */ |
252b5132 RH |
444 | {"space", s_space, 0}, |
445 | {"skip", s_space, 0}, | |
446 | {"sleb128", s_leb128, 1}, | |
447 | {"spc", s_ignore, 0}, | |
448 | {"stabd", s_stab, 'd'}, | |
449 | {"stabn", s_stab, 'n'}, | |
450 | {"stabs", s_stab, 's'}, | |
38a57ae7 NC |
451 | {"string", stringer, 8+1}, |
452 | {"string8", stringer, 8+1}, | |
453 | {"string16", stringer, 16+1}, | |
454 | {"string32", stringer, 32+1}, | |
455 | {"string64", stringer, 64+1}, | |
252b5132 | 456 | {"struct", s_struct, 0}, |
041ff4dd | 457 | /* tag */ |
252b5132 RH |
458 | {"text", s_text, 0}, |
459 | ||
460 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
461 | won't be able to use it for a while -- probably a year or more. | |
462 | But once this has been released, check with gcc maintainers | |
463 | before deleting it or even changing the spelling. */ | |
464 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
465 | /* If we're folding case -- done for some targets, not necessarily | |
466 | all -- the above string in an input file will be converted to | |
467 | this one. Match it either way... */ | |
468 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
469 | ||
041ff4dd | 470 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 471 | {"ttl", listing_title, 0}, |
041ff4dd | 472 | /* type */ |
252b5132 | 473 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
474 | /* use */ |
475 | /* val */ | |
252b5132 RH |
476 | {"xcom", s_comm, 0}, |
477 | {"xdef", s_globl, 0}, | |
478 | {"xref", s_ignore, 0}, | |
479 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 480 | {"warning", s_errwarn, 0}, |
06e77878 | 481 | {"weakref", s_weakref, 0}, |
252b5132 RH |
482 | {"word", cons, 2}, |
483 | {"zero", s_space, 0}, | |
041ff4dd | 484 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
485 | }; |
486 | ||
87c245cc BE |
487 | static offsetT |
488 | get_absolute_expr (expressionS *exp) | |
489 | { | |
9497f5ac | 490 | expression_and_evaluate (exp); |
9136aa49 | 491 | |
87c245cc BE |
492 | if (exp->X_op != O_constant) |
493 | { | |
494 | if (exp->X_op != O_absent) | |
495 | as_bad (_("bad or irreducible absolute expression")); | |
496 | exp->X_add_number = 0; | |
497 | } | |
498 | return exp->X_add_number; | |
499 | } | |
500 | ||
501 | offsetT | |
502 | get_absolute_expression (void) | |
503 | { | |
504 | expressionS exp; | |
505 | ||
506 | return get_absolute_expr (&exp); | |
507 | } | |
508 | ||
252b5132 RH |
509 | static int pop_override_ok = 0; |
510 | static const char *pop_table_name; | |
511 | ||
512 | void | |
39e6acbd | 513 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
514 | { |
515 | const char *errtxt; | |
516 | const pseudo_typeS *pop; | |
517 | for (pop = table; pop->poc_name; pop++) | |
518 | { | |
519 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
520 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
521 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
522 | errtxt); | |
523 | } | |
524 | } | |
525 | ||
526 | #ifndef md_pop_insert | |
527 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
528 | #endif | |
529 | ||
530 | #ifndef obj_pop_insert | |
531 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
532 | #endif | |
533 | ||
54cfded0 AM |
534 | #ifndef cfi_pop_insert |
535 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
536 | #endif | |
537 | ||
041ff4dd | 538 | static void |
39e6acbd | 539 | pobegin (void) |
252b5132 RH |
540 | { |
541 | po_hash = hash_new (); | |
542 | ||
041ff4dd | 543 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
544 | pop_table_name = "md"; |
545 | md_pop_insert (); | |
546 | ||
041ff4dd | 547 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
548 | pop_table_name = "obj"; |
549 | pop_override_ok = 1; | |
550 | obj_pop_insert (); | |
551 | ||
041ff4dd | 552 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
553 | pop_table_name = "standard"; |
554 | pop_insert (potable); | |
d6415f6c | 555 | |
d58a1929 | 556 | /* Now CFI ones. */ |
54cfded0 AM |
557 | pop_table_name = "cfi"; |
558 | pop_override_ok = 1; | |
559 | cfi_pop_insert (); | |
252b5132 RH |
560 | } |
561 | \f | |
e74211b6 | 562 | #define HANDLE_CONDITIONAL_ASSEMBLY(num_read) \ |
252b5132 RH |
563 | if (ignore_input ()) \ |
564 | { \ | |
e74211b6 JB |
565 | char *eol = find_end_of_line (input_line_pointer - (num_read), \ |
566 | flag_m68k_mri); \ | |
40a4d956 JB |
567 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
568 | && eol >= buffer_limit) \ | |
569 | ? buffer_limit \ | |
570 | : eol + 1; \ | |
252b5132 RH |
571 | continue; \ |
572 | } | |
573 | ||
252b5132 RH |
574 | /* This function is used when scrubbing the characters between #APP |
575 | and #NO_APP. */ | |
576 | ||
577 | static char *scrub_string; | |
578 | static char *scrub_string_end; | |
579 | ||
39a45edc AM |
580 | static size_t |
581 | scrub_from_string (char *buf, size_t buflen) | |
252b5132 | 582 | { |
39a45edc | 583 | size_t copy; |
2b47531b ILT |
584 | |
585 | copy = scrub_string_end - scrub_string; | |
586 | if (copy > buflen) | |
587 | copy = buflen; | |
588 | memcpy (buf, scrub_string, copy); | |
589 | scrub_string += copy; | |
590 | return copy; | |
252b5132 RH |
591 | } |
592 | ||
5e75c3ab JB |
593 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
594 | static int | |
595 | try_macro (char term, const char *line) | |
596 | { | |
597 | sb out; | |
598 | const char *err; | |
599 | macro_entry *macro; | |
600 | ||
601 | if (check_macro (line, &out, &err, ¯o)) | |
602 | { | |
603 | if (err != NULL) | |
604 | as_bad ("%s", err); | |
605 | *input_line_pointer++ = term; | |
606 | input_scrub_include_sb (&out, | |
607 | input_line_pointer, 1); | |
608 | sb_kill (&out); | |
609 | buffer_limit = | |
610 | input_scrub_next_buffer (&input_line_pointer); | |
611 | #ifdef md_macro_info | |
612 | md_macro_info (macro); | |
613 | #endif | |
614 | return 1; | |
615 | } | |
616 | return 0; | |
617 | } | |
618 | ||
fa94de6b RM |
619 | #ifdef HANDLE_BUNDLE |
620 | /* Start a new instruction bundle. Returns the rs_align_code frag that | |
621 | will be used to align the new bundle. */ | |
622 | static fragS * | |
623 | start_bundle (void) | |
624 | { | |
625 | fragS *frag = frag_now; | |
626 | ||
627 | frag_align_code (0, 0); | |
628 | ||
629 | while (frag->fr_type != rs_align_code) | |
630 | frag = frag->fr_next; | |
631 | ||
632 | gas_assert (frag != frag_now); | |
633 | ||
634 | return frag; | |
635 | } | |
636 | ||
637 | /* Calculate the maximum size after relaxation of the region starting | |
638 | at the given frag and extending through frag_now (which is unfinished). */ | |
639 | static unsigned int | |
640 | pending_bundle_size (fragS *frag) | |
641 | { | |
642 | unsigned int offset = frag->fr_fix; | |
643 | unsigned int size = 0; | |
644 | ||
645 | gas_assert (frag != frag_now); | |
646 | gas_assert (frag->fr_type == rs_align_code); | |
647 | ||
648 | while (frag != frag_now) | |
649 | { | |
650 | /* This should only happen in what will later become an error case. */ | |
651 | if (frag == NULL) | |
652 | return 0; | |
653 | ||
654 | size += frag->fr_fix; | |
655 | if (frag->fr_type == rs_machine_dependent) | |
656 | size += md_frag_max_var (frag); | |
657 | ||
658 | frag = frag->fr_next; | |
659 | } | |
660 | ||
661 | gas_assert (frag == frag_now); | |
662 | size += frag_now_fix (); | |
663 | if (frag->fr_type == rs_machine_dependent) | |
664 | size += md_frag_max_var (frag); | |
665 | ||
666 | gas_assert (size >= offset); | |
667 | ||
668 | return size - offset; | |
669 | } | |
670 | ||
671 | /* Finish off the frag created to ensure bundle alignment. */ | |
672 | static void | |
673 | finish_bundle (fragS *frag, unsigned int size) | |
674 | { | |
675 | gas_assert (bundle_align_p2 > 0); | |
676 | gas_assert (frag->fr_type == rs_align_code); | |
677 | ||
678 | if (size > 1) | |
679 | { | |
680 | /* If there is more than a single byte, then we need to set up the | |
681 | alignment frag. Otherwise we leave it at its initial state from | |
682 | calling frag_align_code (0, 0), so that it does nothing. */ | |
683 | frag->fr_offset = bundle_align_p2; | |
684 | frag->fr_subtype = size - 1; | |
685 | } | |
686 | ||
687 | /* We do this every time rather than just in s_bundle_align_mode | |
688 | so that we catch any affected section without needing hooks all | |
689 | over for all paths that do section changes. It's cheap enough. */ | |
9136aa49 DG |
690 | if (bundle_align_p2 > OCTETS_PER_BYTE_POWER) |
691 | record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER); | |
fa94de6b RM |
692 | } |
693 | ||
694 | /* Assemble one instruction. This takes care of the bundle features | |
695 | around calling md_assemble. */ | |
696 | static void | |
697 | assemble_one (char *line) | |
698 | { | |
8d3eaee6 | 699 | fragS *insn_start_frag = NULL; |
fa94de6b RM |
700 | |
701 | if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now) | |
702 | { | |
703 | as_bad (_("cannot change section or subsection inside .bundle_lock")); | |
704 | /* Clearing this serves as a marker that we have already complained. */ | |
705 | bundle_lock_frchain = NULL; | |
706 | } | |
707 | ||
708 | if (bundle_lock_frchain == NULL && bundle_align_p2 > 0) | |
709 | insn_start_frag = start_bundle (); | |
710 | ||
711 | md_assemble (line); | |
712 | ||
713 | if (bundle_lock_frchain != NULL) | |
714 | { | |
715 | /* Make sure this hasn't pushed the locked sequence | |
716 | past the bundle size. */ | |
717 | unsigned int bundle_size = pending_bundle_size (bundle_lock_frag); | |
e54e9ac5 AM |
718 | if (bundle_size > 1U << bundle_align_p2) |
719 | as_bad (_ (".bundle_lock sequence at %u bytes, " | |
720 | "but .bundle_align_mode limit is %u bytes"), | |
fa94de6b RM |
721 | bundle_size, 1U << bundle_align_p2); |
722 | } | |
723 | else if (bundle_align_p2 > 0) | |
724 | { | |
725 | unsigned int insn_size = pending_bundle_size (insn_start_frag); | |
726 | ||
e54e9ac5 AM |
727 | if (insn_size > 1U << bundle_align_p2) |
728 | as_bad (_("single instruction is %u bytes long, " | |
729 | "but .bundle_align_mode limit is %u bytes"), | |
730 | insn_size, 1U << bundle_align_p2); | |
fa94de6b RM |
731 | |
732 | finish_bundle (insn_start_frag, insn_size); | |
733 | } | |
734 | } | |
735 | ||
736 | #else /* !HANDLE_BUNDLE */ | |
737 | ||
738 | # define assemble_one(line) md_assemble(line) | |
739 | ||
740 | #endif /* HANDLE_BUNDLE */ | |
741 | ||
9136aa49 DG |
742 | static bfd_boolean |
743 | in_bss (void) | |
744 | { | |
745 | flagword flags = bfd_get_section_flags (stdoutput, now_seg); | |
746 | ||
747 | return (flags & SEC_ALLOC) && !(flags & (SEC_LOAD | SEC_HAS_CONTENTS)); | |
748 | } | |
749 | ||
750 | /* Guts of .align directive: | |
751 | N is the power of two to which to align. A value of zero is accepted but | |
752 | ignored: the default alignment of the section will be at least this. | |
753 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
754 | LEN is the length of whatever FILL points to, if anything. If LEN is zero | |
755 | but FILL is not NULL then LEN is treated as if it were one. | |
756 | MAX is the maximum number of characters to skip when doing the alignment, | |
757 | or 0 if there is no maximum. */ | |
758 | ||
f86f5863 | 759 | void |
9136aa49 DG |
760 | do_align (unsigned int n, char *fill, unsigned int len, unsigned int max) |
761 | { | |
762 | if (now_seg == absolute_section || in_bss ()) | |
763 | { | |
764 | if (fill != NULL) | |
765 | while (len-- > 0) | |
766 | if (*fill++ != '\0') | |
767 | { | |
768 | if (now_seg == absolute_section) | |
769 | as_warn (_("ignoring fill value in absolute section")); | |
770 | else | |
771 | as_warn (_("ignoring fill value in section `%s'"), | |
772 | segment_name (now_seg)); | |
773 | break; | |
774 | } | |
775 | fill = NULL; | |
776 | len = 0; | |
777 | } | |
778 | ||
779 | #ifdef md_flush_pending_output | |
780 | md_flush_pending_output (); | |
781 | #endif | |
782 | ||
783 | #ifdef md_do_align | |
784 | md_do_align (n, fill, len, max, just_record_alignment); | |
785 | #endif | |
786 | ||
787 | /* Only make a frag if we HAVE to... */ | |
788 | if ((n > OCTETS_PER_BYTE_POWER) && !need_pass_2) | |
789 | { | |
790 | if (fill == NULL) | |
791 | { | |
792 | if (subseg_text_p (now_seg)) | |
793 | frag_align_code (n, max); | |
794 | else | |
795 | frag_align (n, 0, max); | |
796 | } | |
797 | else if (len <= 1) | |
798 | frag_align (n, *fill, max); | |
799 | else | |
800 | frag_align_pattern (n, fill, len, max); | |
801 | } | |
802 | ||
803 | #ifdef md_do_align | |
804 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL | |
805 | #endif | |
806 | ||
807 | if (n > OCTETS_PER_BYTE_POWER) | |
808 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); | |
809 | } | |
810 | ||
041ff4dd NC |
811 | /* We read the file, putting things into a web that represents what we |
812 | have been reading. */ | |
813 | void | |
e0471c16 | 814 | read_a_source_file (const char *name) |
252b5132 | 815 | { |
d02603dc NC |
816 | char nul_char; |
817 | char next_char; | |
91d6fa6a NC |
818 | char *s; /* String of symbol, '\0' appended. */ |
819 | int temp; | |
252b5132 RH |
820 | pseudo_typeS *pop; |
821 | ||
4c400d5e AM |
822 | #ifdef WARN_COMMENTS |
823 | found_comment = 0; | |
824 | #endif | |
825 | ||
252b5132 RH |
826 | buffer = input_scrub_new_file (name); |
827 | ||
828 | listing_file (name); | |
829 | listing_newline (NULL); | |
830 | register_dependency (name); | |
831 | ||
832 | /* Generate debugging information before we've read anything in to denote | |
833 | this file as the "main" source file and not a subordinate one | |
834 | (e.g. N_SO vs N_SOL in stabs). */ | |
835 | generate_file_debug (); | |
836 | ||
837 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 838 | { /* We have another line to parse. */ |
5e75c3ab JB |
839 | #ifndef NO_LISTING |
840 | /* In order to avoid listing macro expansion lines with labels | |
841 | multiple times, keep track of which line was last issued. */ | |
842 | static char *last_eol; | |
843 | ||
844 | last_eol = NULL; | |
845 | #endif | |
252b5132 RH |
846 | while (input_line_pointer < buffer_limit) |
847 | { | |
f19df8f7 | 848 | bfd_boolean was_new_line; |
041ff4dd | 849 | /* We have more of this buffer to parse. */ |
252b5132 | 850 | |
041ff4dd NC |
851 | /* We now have input_line_pointer->1st char of next line. |
852 | If input_line_pointer [-1] == '\n' then we just | |
853 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
854 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
855 | if (was_new_line) | |
252b5132 | 856 | { |
4a826962 | 857 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
858 | #ifdef md_start_line_hook |
859 | md_start_line_hook (); | |
860 | #endif | |
252b5132 RH |
861 | if (input_line_pointer[-1] == '\n') |
862 | bump_line_counters (); | |
f19df8f7 | 863 | } |
252b5132 | 864 | |
f19df8f7 AM |
865 | #ifndef NO_LISTING |
866 | /* If listing is on, and we are expanding a macro, then give | |
867 | the listing code the contents of the expanded line. */ | |
868 | if (listing) | |
869 | { | |
870 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
871 | { | |
872 | /* Find the end of the current expanded macro line. */ | |
873 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
874 | ||
875 | if (s != last_eol) | |
876 | { | |
877 | char *copy; | |
878 | int len; | |
879 | ||
880 | last_eol = s; | |
881 | /* Copy it for safe keeping. Also give an indication of | |
882 | how much macro nesting is involved at this point. */ | |
883 | len = s - input_line_pointer; | |
8860a416 | 884 | copy = XNEWVEC (char, len + macro_nest + 2); |
f19df8f7 AM |
885 | memset (copy, '>', macro_nest); |
886 | copy[macro_nest] = ' '; | |
887 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
888 | copy[macro_nest + 1 + len] = '\0'; | |
889 | ||
890 | /* Install the line with the listing facility. */ | |
891 | listing_newline (copy); | |
892 | } | |
893 | } | |
894 | else | |
895 | listing_newline (NULL); | |
896 | } | |
897 | #endif | |
898 | if (was_new_line) | |
899 | { | |
252b5132 RH |
900 | line_label = NULL; |
901 | ||
abd63a32 | 902 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 | 903 | { |
d02603dc | 904 | next_char = * input_line_pointer; |
252b5132 RH |
905 | /* Text at the start of a line must be a label, we |
906 | run down and stick a colon in. */ | |
d02603dc | 907 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 908 | { |
d02603dc | 909 | char *line_start; |
252b5132 RH |
910 | int mri_line_macro; |
911 | ||
e74211b6 | 912 | HANDLE_CONDITIONAL_ASSEMBLY (0); |
252b5132 | 913 | |
d02603dc NC |
914 | nul_char = get_symbol_name (& line_start); |
915 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
252b5132 RH |
916 | |
917 | /* In MRI mode, the EQU and MACRO pseudoops must | |
918 | be handled specially. */ | |
919 | mri_line_macro = 0; | |
920 | if (flag_m68k_mri) | |
921 | { | |
922 | char *rest = input_line_pointer + 1; | |
923 | ||
924 | if (*rest == ':') | |
925 | ++rest; | |
926 | if (*rest == ' ' || *rest == '\t') | |
927 | ++rest; | |
928 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
929 | || strncasecmp (rest, "SET", 3) == 0) | |
930 | && (rest[3] == ' ' || rest[3] == '\t')) | |
931 | { | |
932 | input_line_pointer = rest + 3; | |
933 | equals (line_start, | |
934 | strncasecmp (rest, "SET", 3) == 0); | |
935 | continue; | |
936 | } | |
937 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
938 | && (rest[5] == ' ' | |
939 | || rest[5] == '\t' | |
940 | || is_end_of_line[(unsigned char) rest[5]])) | |
941 | mri_line_macro = 1; | |
942 | } | |
943 | ||
944 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
945 | pseudo-op specially: we don't want to put the |
946 | symbol in the symbol table. */ | |
041ff4dd | 947 | if (!mri_line_macro |
a25c045a | 948 | #ifdef TC_START_LABEL_WITHOUT_COLON |
2e57ce7b | 949 | && TC_START_LABEL_WITHOUT_COLON (nul_char, next_char) |
a25c045a | 950 | #endif |
ef99799a | 951 | ) |
252b5132 RH |
952 | line_label = colon (line_start); |
953 | else | |
954 | line_label = symbol_create (line_start, | |
955 | absolute_section, | |
956 | (valueT) 0, | |
957 | &zero_address_frag); | |
958 | ||
d02603dc NC |
959 | next_char = restore_line_pointer (nul_char); |
960 | if (next_char == ':') | |
252b5132 RH |
961 | input_line_pointer++; |
962 | } | |
963 | } | |
964 | } | |
965 | ||
47eebc20 | 966 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
967 | We expect a well-formed assembler statement. |
968 | A "symbol-name:" is a statement. | |
f0e652b4 | 969 | |
041ff4dd NC |
970 | Depending on what compiler is used, the order of these tests |
971 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
972 | Each test is independent of all other tests at the (top) |
973 | level. */ | |
974 | do | |
d02603dc NC |
975 | nul_char = next_char = *input_line_pointer++; |
976 | while (next_char == '\t' || next_char == ' ' || next_char == '\f'); | |
252b5132 | 977 | |
041ff4dd NC |
978 | /* C is the 1st significant character. |
979 | Input_line_pointer points after that character. */ | |
d02603dc | 980 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 981 | { |
d02603dc NC |
982 | char *rest; |
983 | ||
041ff4dd | 984 | /* Want user-defined label or pseudo/opcode. */ |
e74211b6 | 985 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 986 | |
d02603dc NC |
987 | --input_line_pointer; |
988 | nul_char = get_symbol_name (& s); /* name's delimiter. */ | |
989 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
990 | rest = input_line_pointer + (nul_char == '"' ? 2 : 1); | |
041ff4dd | 991 | |
d02603dc NC |
992 | /* NEXT_CHAR is character after symbol. |
993 | The end of symbol in the input line is now '\0'. | |
d6415f6c AM |
994 | S points to the beginning of the symbol. |
995 | [In case of pseudo-op, s->'.'.] | |
d02603dc | 996 | Input_line_pointer->'\0' where NUL_CHAR was. */ |
2e57ce7b | 997 | if (TC_START_LABEL (s, nul_char, next_char)) |
252b5132 RH |
998 | { |
999 | if (flag_m68k_mri) | |
1000 | { | |
252b5132 | 1001 | /* In MRI mode, \tsym: set 0 is permitted. */ |
252b5132 RH |
1002 | if (*rest == ':') |
1003 | ++rest; | |
f0e652b4 | 1004 | |
252b5132 RH |
1005 | if (*rest == ' ' || *rest == '\t') |
1006 | ++rest; | |
f0e652b4 | 1007 | |
252b5132 RH |
1008 | if ((strncasecmp (rest, "EQU", 3) == 0 |
1009 | || strncasecmp (rest, "SET", 3) == 0) | |
1010 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1011 | { | |
1012 | input_line_pointer = rest + 3; | |
1013 | equals (s, 1); | |
1014 | continue; | |
1015 | } | |
1016 | } | |
1017 | ||
041ff4dd | 1018 | line_label = colon (s); /* User-defined label. */ |
d02603dc NC |
1019 | restore_line_pointer (nul_char); |
1020 | ++ input_line_pointer; | |
a645d1eb L |
1021 | #ifdef tc_check_label |
1022 | tc_check_label (line_label); | |
1023 | #endif | |
041ff4dd | 1024 | /* Input_line_pointer->after ':'. */ |
252b5132 | 1025 | SKIP_WHITESPACE (); |
252b5132 | 1026 | } |
d02603dc NC |
1027 | else if ((next_char == '=' && *rest == '=') |
1028 | || ((next_char == ' ' || next_char == '\t') | |
1029 | && rest[0] == '=' | |
1030 | && rest[1] == '=')) | |
9497f5ac NC |
1031 | { |
1032 | equals (s, -1); | |
1033 | demand_empty_rest_of_line (); | |
1034 | } | |
d02603dc NC |
1035 | else if ((next_char == '=' |
1036 | || ((next_char == ' ' || next_char == '\t') | |
1037 | && *rest == '=')) | |
ee3c9814 | 1038 | #ifdef TC_EQUAL_IN_INSN |
d02603dc | 1039 | && !TC_EQUAL_IN_INSN (next_char, s) |
ee3c9814 | 1040 | #endif |
fa94de6b | 1041 | ) |
252b5132 RH |
1042 | { |
1043 | equals (s, 1); | |
1044 | demand_empty_rest_of_line (); | |
1045 | } | |
1046 | else | |
041ff4dd NC |
1047 | { |
1048 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
1049 | pop = NULL; |
1050 | ||
a8a3b3b2 | 1051 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
1052 | { |
1053 | char *s2 = s; | |
37d8bb27 NC |
1054 | |
1055 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
1056 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 1057 | |
252b5132 RH |
1058 | while (*s2) |
1059 | { | |
3882b010 | 1060 | *s2 = TOLOWER (*s2); |
252b5132 RH |
1061 | s2++; |
1062 | } | |
1063 | } | |
1064 | #endif | |
abd63a32 | 1065 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 1066 | { |
7be1c489 AM |
1067 | /* The MRI assembler uses pseudo-ops without |
1068 | a period. */ | |
252b5132 RH |
1069 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
1070 | if (pop != NULL && pop->poc_handler == NULL) | |
1071 | pop = NULL; | |
1072 | } | |
1073 | ||
1074 | if (pop != NULL | |
041ff4dd | 1075 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 1076 | { |
041ff4dd | 1077 | /* PSEUDO - OP. |
f0e652b4 | 1078 | |
d02603dc | 1079 | WARNING: next_char may be end-of-line. |
d6415f6c AM |
1080 | We lookup the pseudo-op table with s+1 because we |
1081 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
1082 | |
1083 | if (pop == NULL) | |
1084 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
1085 | if (pop && !pop->poc_handler) |
1086 | pop = NULL; | |
252b5132 RH |
1087 | |
1088 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
1089 | automatic alignment directive. What a hack |
1090 | this is. */ | |
252b5132 RH |
1091 | if (mri_pending_align |
1092 | && (pop == NULL | |
041ff4dd NC |
1093 | || !((pop->poc_handler == cons |
1094 | && pop->poc_val == 1) | |
1095 | || (pop->poc_handler == s_space | |
1096 | && pop->poc_val == 1) | |
252b5132 | 1097 | #ifdef tc_conditional_pseudoop |
041ff4dd | 1098 | || tc_conditional_pseudoop (pop) |
252b5132 | 1099 | #endif |
041ff4dd NC |
1100 | || pop->poc_handler == s_if |
1101 | || pop->poc_handler == s_ifdef | |
1102 | || pop->poc_handler == s_ifc | |
1103 | || pop->poc_handler == s_ifeqs | |
1104 | || pop->poc_handler == s_else | |
1105 | || pop->poc_handler == s_endif | |
1106 | || pop->poc_handler == s_globl | |
1107 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
1108 | { |
1109 | do_align (1, (char *) NULL, 0, 0); | |
1110 | mri_pending_align = 0; | |
f0e652b4 | 1111 | |
252b5132 RH |
1112 | if (line_label != NULL) |
1113 | { | |
2b47531b | 1114 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1115 | S_SET_VALUE (line_label, frag_now_fix ()); |
1116 | } | |
1117 | } | |
1118 | ||
041ff4dd | 1119 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
1120 | if (pop == NULL) |
1121 | { | |
5e75c3ab JB |
1122 | char *end = input_line_pointer; |
1123 | ||
d02603dc | 1124 | (void) restore_line_pointer (nul_char); |
252b5132 | 1125 | s_ignore (0); |
d02603dc | 1126 | nul_char = next_char = *--input_line_pointer; |
5e75c3ab | 1127 | *input_line_pointer = '\0'; |
d02603dc | 1128 | if (! macro_defined || ! try_macro (next_char, s)) |
5e75c3ab JB |
1129 | { |
1130 | *end = '\0'; | |
1131 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
d02603dc | 1132 | *input_line_pointer++ = nul_char; |
5e75c3ab | 1133 | } |
252b5132 RH |
1134 | continue; |
1135 | } | |
1136 | ||
041ff4dd | 1137 | /* Put it back for error messages etc. */ |
d02603dc | 1138 | next_char = restore_line_pointer (nul_char); |
252b5132 RH |
1139 | /* The following skip of whitespace is compulsory. |
1140 | A well shaped space is sometimes all that separates | |
041ff4dd | 1141 | keyword from operands. */ |
d02603dc | 1142 | if (next_char == ' ' || next_char == '\t') |
252b5132 | 1143 | input_line_pointer++; |
041ff4dd NC |
1144 | |
1145 | /* Input_line is restored. | |
d6415f6c AM |
1146 | Input_line_pointer->1st non-blank char |
1147 | after pseudo-operation. */ | |
252b5132 RH |
1148 | (*pop->poc_handler) (pop->poc_val); |
1149 | ||
1150 | /* If that was .end, just get out now. */ | |
1151 | if (pop->poc_handler == s_end) | |
1152 | goto quit; | |
1153 | } | |
1154 | else | |
1155 | { | |
d02603dc NC |
1156 | /* WARNING: next_char may be end-of-line. */ |
1157 | /* Also: input_line_pointer->`\0` where nul_char was. */ | |
1158 | (void) restore_line_pointer (nul_char); | |
7592cfd7 | 1159 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
d02603dc | 1160 | next_char = nul_char = *input_line_pointer; |
252b5132 RH |
1161 | *input_line_pointer = '\0'; |
1162 | ||
1163 | generate_lineno_debug (); | |
1164 | ||
d02603dc | 1165 | if (macro_defined && try_macro (next_char, s)) |
5e75c3ab | 1166 | continue; |
252b5132 RH |
1167 | |
1168 | if (mri_pending_align) | |
1169 | { | |
1170 | do_align (1, (char *) NULL, 0, 0); | |
1171 | mri_pending_align = 0; | |
1172 | if (line_label != NULL) | |
1173 | { | |
2b47531b | 1174 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1175 | S_SET_VALUE (line_label, frag_now_fix ()); |
1176 | } | |
1177 | } | |
1178 | ||
fa94de6b | 1179 | assemble_one (s); /* Assemble 1 instruction. */ |
252b5132 | 1180 | |
3be64886 NC |
1181 | /* PR 19630: The backend may have set ilp to NULL |
1182 | if it encountered a catastrophic failure. */ | |
1183 | if (input_line_pointer == NULL) | |
1184 | as_fatal (_("unable to continue with assembly.")); | |
1185 | ||
d02603dc | 1186 | *input_line_pointer++ = nul_char; |
252b5132 RH |
1187 | |
1188 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
1189 | this instruction. */ |
1190 | } | |
1191 | } | |
252b5132 | 1192 | continue; |
041ff4dd | 1193 | } |
252b5132 RH |
1194 | |
1195 | /* Empty statement? */ | |
d02603dc | 1196 | if (is_end_of_line[(unsigned char) next_char]) |
252b5132 RH |
1197 | continue; |
1198 | ||
d02603dc | 1199 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (next_char)) |
252b5132 | 1200 | { |
041ff4dd | 1201 | /* local label ("4:") */ |
252b5132 RH |
1202 | char *backup = input_line_pointer; |
1203 | ||
e74211b6 | 1204 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1205 | |
d02603dc NC |
1206 | temp = next_char - '0'; |
1207 | ||
1208 | if (nul_char == '"') | |
1209 | ++ input_line_pointer; | |
252b5132 | 1210 | |
041ff4dd | 1211 | /* Read the whole number. */ |
3882b010 | 1212 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
1213 | { |
1214 | temp = (temp * 10) + *input_line_pointer - '0'; | |
1215 | ++input_line_pointer; | |
041ff4dd | 1216 | } |
252b5132 RH |
1217 | |
1218 | if (LOCAL_LABELS_DOLLAR | |
1219 | && *input_line_pointer == '$' | |
1220 | && *(input_line_pointer + 1) == ':') | |
1221 | { | |
1222 | input_line_pointer += 2; | |
1223 | ||
1224 | if (dollar_label_defined (temp)) | |
1225 | { | |
1226 | as_fatal (_("label \"%d$\" redefined"), temp); | |
1227 | } | |
1228 | ||
1229 | define_dollar_label (temp); | |
1230 | colon (dollar_label_name (temp, 0)); | |
1231 | continue; | |
1232 | } | |
1233 | ||
1234 | if (LOCAL_LABELS_FB | |
1235 | && *input_line_pointer++ == ':') | |
1236 | { | |
1237 | fb_label_instance_inc (temp); | |
1238 | colon (fb_label_name (temp, 0)); | |
1239 | continue; | |
1240 | } | |
1241 | ||
1242 | input_line_pointer = backup; | |
d02603dc | 1243 | } |
252b5132 | 1244 | |
d02603dc | 1245 | if (next_char && strchr (line_comment_chars, next_char)) |
041ff4dd | 1246 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1247 | sb sbuf; |
252b5132 RH |
1248 | char *ends; |
1249 | char *new_buf; | |
1250 | char *new_tmp; | |
1251 | unsigned int new_length; | |
1252 | char *tmp_buf = 0; | |
1253 | ||
252b5132 RH |
1254 | s = input_line_pointer; |
1255 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1256 | { |
1257 | /* We ignore it. */ | |
1258 | ignore_rest_of_line (); | |
1259 | continue; | |
1260 | } | |
1261 | bump_line_counters (); | |
252b5132 RH |
1262 | s += 4; |
1263 | ||
1264 | ends = strstr (s, "#NO_APP\n"); | |
1265 | ||
1266 | if (!ends) | |
1267 | { | |
1268 | unsigned int tmp_len; | |
1269 | unsigned int num; | |
1270 | ||
1271 | /* The end of the #APP wasn't in this buffer. We | |
1272 | keep reading in buffers until we find the #NO_APP | |
1273 | that goes with this #APP There is one. The specs | |
47eebc20 | 1274 | guarantee it... */ |
252b5132 | 1275 | tmp_len = buffer_limit - s; |
8860a416 | 1276 | tmp_buf = XNEWVEC (char, tmp_len + 1); |
252b5132 RH |
1277 | memcpy (tmp_buf, s, tmp_len); |
1278 | do | |
1279 | { | |
1280 | new_tmp = input_scrub_next_buffer (&buffer); | |
1281 | if (!new_tmp) | |
1282 | break; | |
1283 | else | |
1284 | buffer_limit = new_tmp; | |
1285 | input_line_pointer = buffer; | |
1286 | ends = strstr (buffer, "#NO_APP\n"); | |
1287 | if (ends) | |
1288 | num = ends - buffer; | |
1289 | else | |
1290 | num = buffer_limit - buffer; | |
1291 | ||
8860a416 | 1292 | tmp_buf = XRESIZEVEC (char, tmp_buf, tmp_len + num); |
252b5132 RH |
1293 | memcpy (tmp_buf + tmp_len, buffer, num); |
1294 | tmp_len += num; | |
1295 | } | |
1296 | while (!ends); | |
1297 | ||
1298 | input_line_pointer = ends ? ends + 8 : NULL; | |
1299 | ||
1300 | s = tmp_buf; | |
1301 | ends = s + tmp_len; | |
1302 | ||
1303 | } | |
1304 | else | |
1305 | { | |
1306 | input_line_pointer = ends + 8; | |
1307 | } | |
1308 | ||
1309 | scrub_string = s; | |
1310 | scrub_string_end = ends; | |
1311 | ||
1312 | new_length = ends - s; | |
8860a416 | 1313 | new_buf = XNEWVEC (char, new_length); |
252b5132 RH |
1314 | new_tmp = new_buf; |
1315 | for (;;) | |
1316 | { | |
39a45edc AM |
1317 | size_t space; |
1318 | size_t size; | |
252b5132 RH |
1319 | |
1320 | space = (new_buf + new_length) - new_tmp; | |
1321 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1322 | ||
1323 | if (size < space) | |
1324 | { | |
64e55042 | 1325 | new_tmp[size] = 0; |
252b5132 RH |
1326 | break; |
1327 | } | |
1328 | ||
8860a416 | 1329 | new_buf = XRESIZEVEC (char, new_buf, new_length + 100); |
252b5132 RH |
1330 | new_tmp = new_buf + new_length; |
1331 | new_length += 100; | |
1332 | } | |
1333 | ||
1334 | if (tmp_buf) | |
1335 | free (tmp_buf); | |
f0e652b4 | 1336 | |
64e55042 HPN |
1337 | /* We've "scrubbed" input to the preferred format. In the |
1338 | process we may have consumed the whole of the remaining | |
1339 | file (and included files). We handle this formatted | |
1340 | input similar to that of macro expansion, letting | |
1341 | actual macro expansion (possibly nested) and other | |
1342 | input expansion work. Beware that in messages, line | |
1343 | numbers and possibly file names will be incorrect. */ | |
d2ae702c L |
1344 | new_length = strlen (new_buf); |
1345 | sb_build (&sbuf, new_length); | |
1346 | sb_add_buffer (&sbuf, new_buf, new_length); | |
64e55042 HPN |
1347 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); |
1348 | sb_kill (&sbuf); | |
1349 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1350 | free (new_buf); | |
252b5132 RH |
1351 | continue; |
1352 | } | |
1353 | ||
e74211b6 | 1354 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 RH |
1355 | |
1356 | #ifdef tc_unrecognized_line | |
d02603dc | 1357 | if (tc_unrecognized_line (next_char)) |
252b5132 RH |
1358 | continue; |
1359 | #endif | |
0e389e77 | 1360 | input_line_pointer--; |
601e61cd | 1361 | /* Report unknown char as error. */ |
c95b35a9 | 1362 | demand_empty_rest_of_line (); |
041ff4dd | 1363 | } |
041ff4dd | 1364 | } |
252b5132 RH |
1365 | |
1366 | quit: | |
04648e65 | 1367 | symbol_set_value_now (&dot_symbol); |
252b5132 | 1368 | |
fa94de6b RM |
1369 | #ifdef HANDLE_BUNDLE |
1370 | if (bundle_lock_frag != NULL) | |
1371 | { | |
1372 | as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line, | |
1373 | _(".bundle_lock with no matching .bundle_unlock")); | |
1374 | bundle_lock_frag = NULL; | |
1375 | bundle_lock_frchain = NULL; | |
d416e51d | 1376 | bundle_lock_depth = 0; |
fa94de6b RM |
1377 | } |
1378 | #endif | |
1379 | ||
252b5132 | 1380 | #ifdef md_cleanup |
041ff4dd | 1381 | md_cleanup (); |
252b5132 | 1382 | #endif |
041ff4dd NC |
1383 | /* Close the input file. */ |
1384 | input_scrub_close (); | |
4c400d5e AM |
1385 | #ifdef WARN_COMMENTS |
1386 | { | |
1387 | if (warn_comment && found_comment) | |
1388 | as_warn_where (found_comment_file, found_comment, | |
1389 | "first comment found here"); | |
1390 | } | |
1391 | #endif | |
252b5132 RH |
1392 | } |
1393 | ||
e5604d79 | 1394 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
956a6ba3 | 1395 | Take the sign of the number from SIGN rather than X_add_number. */ |
e5604d79 RS |
1396 | |
1397 | static void | |
956a6ba3 | 1398 | convert_to_bignum (expressionS *exp, int sign) |
e5604d79 RS |
1399 | { |
1400 | valueT value; | |
1401 | unsigned int i; | |
1402 | ||
1403 | value = exp->X_add_number; | |
1404 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1405 | { | |
1406 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1407 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1408 | } | |
1409 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1410 | the sign of the original value. */ | |
956a6ba3 JB |
1411 | if ((exp->X_add_number < 0) == !sign) |
1412 | generic_bignum[i++] = sign ? LITTLENUM_MASK : 0; | |
e5604d79 RS |
1413 | exp->X_op = O_big; |
1414 | exp->X_add_number = i; | |
1415 | } | |
1416 | ||
252b5132 RH |
1417 | /* For most MRI pseudo-ops, the line actually ends at the first |
1418 | nonquoted space. This function looks for that point, stuffs a null | |
1419 | in, and sets *STOPCP to the character that used to be there, and | |
1420 | returns the location. | |
1421 | ||
1422 | Until I hear otherwise, I am going to assume that this is only true | |
1423 | for the m68k MRI assembler. */ | |
1424 | ||
1425 | char * | |
39e6acbd | 1426 | mri_comment_field (char *stopcp) |
252b5132 | 1427 | { |
252b5132 | 1428 | char *s; |
041ff4dd | 1429 | #ifdef TC_M68K |
252b5132 RH |
1430 | int inquote = 0; |
1431 | ||
1432 | know (flag_m68k_mri); | |
1433 | ||
1434 | for (s = input_line_pointer; | |
041ff4dd | 1435 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1436 | || inquote); |
1437 | s++) | |
1438 | { | |
1439 | if (*s == '\'') | |
041ff4dd | 1440 | inquote = !inquote; |
252b5132 | 1441 | } |
252b5132 | 1442 | #else |
041ff4dd NC |
1443 | for (s = input_line_pointer; |
1444 | !is_end_of_line[(unsigned char) *s]; | |
1445 | s++) | |
252b5132 | 1446 | ; |
041ff4dd | 1447 | #endif |
252b5132 RH |
1448 | *stopcp = *s; |
1449 | *s = '\0'; | |
f0e652b4 | 1450 | |
252b5132 | 1451 | return s; |
252b5132 RH |
1452 | } |
1453 | ||
1454 | /* Skip to the end of an MRI comment field. */ | |
1455 | ||
1456 | void | |
39e6acbd | 1457 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1458 | { |
1459 | know (flag_mri); | |
1460 | ||
1461 | input_line_pointer = stop; | |
1462 | *stop = stopc; | |
041ff4dd | 1463 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1464 | ++input_line_pointer; |
1465 | } | |
1466 | ||
041ff4dd | 1467 | void |
39e6acbd | 1468 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1469 | { |
1470 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1471 | } | |
1472 | ||
252b5132 RH |
1473 | /* Handle the .align pseudo-op. A positive ARG is a default alignment |
1474 | (in bytes). A negative ARG is the negative of the length of the | |
1475 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1476 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1477 | #ifndef TC_ALIGN_LIMIT |
1478 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1479 | #endif | |
9ebd302d | 1480 | |
252b5132 | 1481 | static void |
9136aa49 | 1482 | s_align (signed int arg, int bytes_p) |
252b5132 | 1483 | { |
11ec4ba9 | 1484 | unsigned int align_limit = TC_ALIGN_LIMIT; |
9ebd302d | 1485 | unsigned int align; |
252b5132 | 1486 | char *stop = NULL; |
fb25138b | 1487 | char stopc = 0; |
252b5132 | 1488 | offsetT fill = 0; |
9136aa49 | 1489 | unsigned int max; |
252b5132 RH |
1490 | int fill_p; |
1491 | ||
1492 | if (flag_mri) | |
1493 | stop = mri_comment_field (&stopc); | |
1494 | ||
1495 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1496 | { | |
1497 | if (arg < 0) | |
1498 | align = 0; | |
1499 | else | |
041ff4dd | 1500 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1501 | } |
1502 | else | |
1503 | { | |
1504 | align = get_absolute_expression (); | |
1505 | SKIP_WHITESPACE (); | |
db2ed2e0 AM |
1506 | |
1507 | #ifdef TC_ALIGN_ZERO_IS_DEFAULT | |
1508 | if (arg > 0 && align == 0) | |
1509 | align = arg; | |
1510 | #endif | |
252b5132 RH |
1511 | } |
1512 | ||
1513 | if (bytes_p) | |
1514 | { | |
1515 | /* Convert to a power of 2. */ | |
1516 | if (align != 0) | |
1517 | { | |
1518 | unsigned int i; | |
1519 | ||
1520 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1521 | ; | |
1522 | if (align != 1) | |
0e389e77 | 1523 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1524 | |
252b5132 RH |
1525 | align = i; |
1526 | } | |
1527 | } | |
1528 | ||
b617dc20 | 1529 | if (align > align_limit) |
252b5132 | 1530 | { |
b617dc20 | 1531 | align = align_limit; |
0e389e77 | 1532 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1533 | } |
1534 | ||
1535 | if (*input_line_pointer != ',') | |
1536 | { | |
1537 | fill_p = 0; | |
1538 | max = 0; | |
1539 | } | |
1540 | else | |
1541 | { | |
1542 | ++input_line_pointer; | |
1543 | if (*input_line_pointer == ',') | |
1544 | fill_p = 0; | |
1545 | else | |
1546 | { | |
1547 | fill = get_absolute_expression (); | |
1548 | SKIP_WHITESPACE (); | |
1549 | fill_p = 1; | |
1550 | } | |
1551 | ||
1552 | if (*input_line_pointer != ',') | |
1553 | max = 0; | |
1554 | else | |
1555 | { | |
1556 | ++input_line_pointer; | |
1557 | max = get_absolute_expression (); | |
1558 | } | |
1559 | } | |
1560 | ||
041ff4dd | 1561 | if (!fill_p) |
252b5132 RH |
1562 | { |
1563 | if (arg < 0) | |
1564 | as_warn (_("expected fill pattern missing")); | |
1565 | do_align (align, (char *) NULL, 0, max); | |
1566 | } | |
1567 | else | |
1568 | { | |
9136aa49 | 1569 | unsigned int fill_len; |
252b5132 RH |
1570 | |
1571 | if (arg >= 0) | |
1572 | fill_len = 1; | |
1573 | else | |
041ff4dd | 1574 | fill_len = -arg; |
9136aa49 | 1575 | |
252b5132 RH |
1576 | if (fill_len <= 1) |
1577 | { | |
9136aa49 | 1578 | char fill_char = 0; |
252b5132 RH |
1579 | |
1580 | fill_char = fill; | |
1581 | do_align (align, &fill_char, fill_len, max); | |
1582 | } | |
1583 | else | |
1584 | { | |
1585 | char ab[16]; | |
1586 | ||
1587 | if ((size_t) fill_len > sizeof ab) | |
9136aa49 DG |
1588 | { |
1589 | as_warn (_("fill pattern too long, truncating to %u"), | |
1590 | (unsigned) sizeof ab); | |
1591 | fill_len = sizeof ab; | |
1592 | } | |
1593 | ||
252b5132 RH |
1594 | md_number_to_chars (ab, fill, fill_len); |
1595 | do_align (align, ab, fill_len, max); | |
1596 | } | |
1597 | } | |
1598 | ||
1599 | demand_empty_rest_of_line (); | |
1600 | ||
1601 | if (flag_mri) | |
1602 | mri_comment_end (stop, stopc); | |
1603 | } | |
1604 | ||
1605 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1606 | align to a 4 byte boundary. */ | |
1607 | ||
041ff4dd | 1608 | void |
39e6acbd | 1609 | s_align_bytes (int arg) |
252b5132 RH |
1610 | { |
1611 | s_align (arg, 1); | |
1612 | } | |
1613 | ||
1614 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1615 | to a 2**4 boundary. */ | |
1616 | ||
041ff4dd | 1617 | void |
39e6acbd | 1618 | s_align_ptwo (int arg) |
252b5132 RH |
1619 | { |
1620 | s_align (arg, 0); | |
1621 | } | |
1622 | ||
caa32fe5 NC |
1623 | /* Switch in and out of alternate macro mode. */ |
1624 | ||
b38ead21 | 1625 | static void |
caa32fe5 NC |
1626 | s_altmacro (int on) |
1627 | { | |
1628 | demand_empty_rest_of_line (); | |
1629 | macro_set_alternate (on); | |
1630 | } | |
1631 | ||
7bfd842d NC |
1632 | /* Read a symbol name from input_line_pointer. |
1633 | ||
1634 | Stores the symbol name in a buffer and returns a pointer to this buffer. | |
1635 | The buffer is xalloc'ed. It is the caller's responsibility to free | |
1636 | this buffer. | |
1637 | ||
1638 | The name is not left in the i_l_p buffer as it may need processing | |
1639 | to handle escape characters. | |
1640 | ||
1641 | Advances i_l_p to the next non-whitespace character. | |
1642 | ||
1643 | If a symbol name could not be read, the routine issues an error | |
1644 | messages, skips to the end of the line and returns NULL. */ | |
1645 | ||
69602580 | 1646 | char * |
7bfd842d NC |
1647 | read_symbol_name (void) |
1648 | { | |
1649 | char * name; | |
1650 | char * start; | |
1651 | char c; | |
1652 | ||
1653 | c = *input_line_pointer++; | |
1654 | ||
1655 | if (c == '"') | |
1656 | { | |
1657 | #define SYM_NAME_CHUNK_LEN 128 | |
1658 | ptrdiff_t len = SYM_NAME_CHUNK_LEN; | |
1659 | char * name_end; | |
1660 | unsigned int C; | |
1661 | ||
8860a416 | 1662 | start = name = XNEWVEC (char, len + 1); |
7bfd842d NC |
1663 | |
1664 | name_end = name + SYM_NAME_CHUNK_LEN; | |
1665 | ||
1666 | while (is_a_char (C = next_char_of_string ())) | |
1667 | { | |
1668 | if (name >= name_end) | |
1669 | { | |
1670 | ptrdiff_t sofar; | |
1671 | ||
1672 | sofar = name - start; | |
1673 | len += SYM_NAME_CHUNK_LEN; | |
8860a416 | 1674 | start = XRESIZEVEC (char, start, len + 1); |
7bfd842d NC |
1675 | name_end = start + len; |
1676 | name = start + sofar; | |
1677 | } | |
34bca508 | 1678 | |
7bfd842d NC |
1679 | *name++ = (char) C; |
1680 | } | |
1681 | *name = 0; | |
1682 | ||
1683 | /* Since quoted symbol names can contain non-ASCII characters, | |
1684 | check the string and warn if it cannot be recognised by the | |
1685 | current character set. */ | |
1686 | if (mbstowcs (NULL, name, len) == (size_t) -1) | |
1687 | as_warn (_("symbol name not recognised in the current locale")); | |
1688 | } | |
2469b3c5 | 1689 | else if (is_name_beginner (c) || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1690 | { |
1691 | ptrdiff_t len; | |
1692 | ||
1693 | name = input_line_pointer - 1; | |
1694 | ||
2469b3c5 | 1695 | /* We accept FAKE_LABEL_CHAR in a name in case this is |
7bfd842d NC |
1696 | being called with a constructed string. */ |
1697 | while (is_part_of_name (c = *input_line_pointer++) | |
2469b3c5 | 1698 | || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1699 | ; |
1700 | ||
1701 | len = (input_line_pointer - name) - 1; | |
8860a416 | 1702 | start = XNEWVEC (char, len + 1); |
7bfd842d NC |
1703 | |
1704 | memcpy (start, name, len); | |
1705 | start[len] = 0; | |
1706 | ||
1707 | /* Skip a name ender char if one is present. */ | |
1708 | if (! is_name_ender (c)) | |
1709 | --input_line_pointer; | |
1710 | } | |
1711 | else | |
1712 | name = start = NULL; | |
1713 | ||
1714 | if (name == start) | |
1715 | { | |
1716 | as_bad (_("expected symbol name")); | |
1717 | ignore_rest_of_line (); | |
1718 | return NULL; | |
1719 | } | |
34bca508 | 1720 | |
7bfd842d NC |
1721 | SKIP_WHITESPACE (); |
1722 | ||
1723 | return start; | |
1724 | } | |
1725 | ||
1726 | ||
e13bab5a AM |
1727 | symbolS * |
1728 | s_comm_internal (int param, | |
1729 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1730 | { |
e13bab5a | 1731 | char *name; |
e13bab5a AM |
1732 | offsetT temp, size; |
1733 | symbolS *symbolP = NULL; | |
252b5132 | 1734 | char *stop = NULL; |
fb25138b | 1735 | char stopc = 0; |
e13bab5a | 1736 | expressionS exp; |
252b5132 RH |
1737 | |
1738 | if (flag_mri) | |
1739 | stop = mri_comment_field (&stopc); | |
1740 | ||
7bfd842d NC |
1741 | if ((name = read_symbol_name ()) == NULL) |
1742 | goto out; | |
f0e652b4 | 1743 | |
e13bab5a AM |
1744 | /* Accept an optional comma after the name. The comma used to be |
1745 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1746 | if (*input_line_pointer == ',') | |
1747 | input_line_pointer++; | |
1748 | ||
e13bab5a AM |
1749 | temp = get_absolute_expr (&exp); |
1750 | size = temp; | |
65879393 | 1751 | size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1752 | if (exp.X_op == O_absent) |
252b5132 | 1753 | { |
e13bab5a | 1754 | as_bad (_("missing size expression")); |
252b5132 | 1755 | ignore_rest_of_line (); |
e13bab5a | 1756 | goto out; |
252b5132 | 1757 | } |
e13bab5a | 1758 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1759 | { |
e13bab5a | 1760 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1761 | ignore_rest_of_line (); |
e13bab5a | 1762 | goto out; |
252b5132 | 1763 | } |
f0e652b4 | 1764 | |
252b5132 | 1765 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1766 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1767 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1768 | { |
92757bc9 JB |
1769 | if (!S_IS_VOLATILE (symbolP)) |
1770 | { | |
1771 | symbolP = NULL; | |
1772 | as_bad (_("symbol `%s' is already defined"), name); | |
92757bc9 JB |
1773 | ignore_rest_of_line (); |
1774 | goto out; | |
1775 | } | |
89cdfe57 | 1776 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1777 | S_SET_SEGMENT (symbolP, undefined_section); |
1778 | S_SET_VALUE (symbolP, 0); | |
1779 | symbol_set_frag (symbolP, &zero_address_frag); | |
1780 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1781 | } |
f0e652b4 | 1782 | |
e13bab5a AM |
1783 | size = S_GET_VALUE (symbolP); |
1784 | if (size == 0) | |
1785 | size = temp; | |
1786 | else if (size != temp) | |
1787 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1788 | name, (long) size, (long) temp); | |
1789 | ||
e13bab5a AM |
1790 | if (comm_parse_extra != NULL) |
1791 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1792 | else |
1793 | { | |
e13bab5a | 1794 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1795 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1796 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
e13bab5a | 1797 | } |
252b5132 RH |
1798 | |
1799 | demand_empty_rest_of_line (); | |
e13bab5a | 1800 | out: |
252b5132 RH |
1801 | if (flag_mri) |
1802 | mri_comment_end (stop, stopc); | |
7bfd842d NC |
1803 | if (name != NULL) |
1804 | free (name); | |
e13bab5a AM |
1805 | return symbolP; |
1806 | } | |
1807 | ||
1808 | void | |
1809 | s_comm (int ignore) | |
1810 | { | |
1811 | s_comm_internal (ignore, NULL); | |
1812 | } | |
252b5132 RH |
1813 | |
1814 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1815 | symbol with the appropriate name. We make s_space do the right | |
1816 | thing by increasing the size. */ | |
1817 | ||
1818 | void | |
39e6acbd | 1819 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1820 | { |
1821 | char *name; | |
1822 | char c; | |
1823 | char *alc = NULL; | |
1824 | symbolS *sym; | |
1825 | offsetT align; | |
1826 | char *stop = NULL; | |
fb25138b | 1827 | char stopc = 0; |
252b5132 | 1828 | |
041ff4dd | 1829 | if (!flag_mri) |
252b5132 RH |
1830 | { |
1831 | s_comm (0); | |
1832 | return; | |
1833 | } | |
1834 | ||
1835 | stop = mri_comment_field (&stopc); | |
1836 | ||
1837 | SKIP_WHITESPACE (); | |
1838 | ||
1839 | name = input_line_pointer; | |
3882b010 | 1840 | if (!ISDIGIT (*name)) |
d02603dc | 1841 | c = get_symbol_name (& name); |
252b5132 RH |
1842 | else |
1843 | { | |
1844 | do | |
1845 | { | |
1846 | ++input_line_pointer; | |
1847 | } | |
3882b010 | 1848 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1849 | |
252b5132 RH |
1850 | c = *input_line_pointer; |
1851 | *input_line_pointer = '\0'; | |
1852 | ||
1853 | if (line_label != NULL) | |
1854 | { | |
8860a416 TS |
1855 | alc = XNEWVEC (char, strlen (S_GET_NAME (line_label)) |
1856 | + (input_line_pointer - name) + 1); | |
252b5132 RH |
1857 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); |
1858 | name = alc; | |
1859 | } | |
1860 | } | |
1861 | ||
1862 | sym = symbol_find_or_make (name); | |
d02603dc | 1863 | c = restore_line_pointer (c); |
252b5132 RH |
1864 | if (alc != NULL) |
1865 | free (alc); | |
1866 | ||
1867 | if (*input_line_pointer != ',') | |
1868 | align = 0; | |
1869 | else | |
1870 | { | |
1871 | ++input_line_pointer; | |
1872 | align = get_absolute_expression (); | |
1873 | } | |
1874 | ||
041ff4dd | 1875 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1876 | { |
0e389e77 | 1877 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1878 | ignore_rest_of_line (); |
1879 | mri_comment_end (stop, stopc); | |
1880 | return; | |
1881 | } | |
1882 | ||
1883 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1884 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1885 | mri_common_symbol = sym; |
1886 | ||
1887 | #ifdef S_SET_ALIGN | |
1888 | if (align != 0) | |
1889 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1890 | #else |
1891 | (void) align; | |
252b5132 RH |
1892 | #endif |
1893 | ||
1894 | if (line_label != NULL) | |
1895 | { | |
2b47531b ILT |
1896 | expressionS exp; |
1897 | exp.X_op = O_symbol; | |
1898 | exp.X_add_symbol = sym; | |
1899 | exp.X_add_number = 0; | |
1900 | symbol_set_value_expression (line_label, &exp); | |
1901 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1902 | S_SET_SEGMENT (line_label, expr_section); |
1903 | } | |
1904 | ||
1905 | /* FIXME: We just ignore the small argument, which distinguishes | |
1906 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1907 | ||
1908 | /* Ignore the type and hptype. */ | |
1909 | if (*input_line_pointer == ',') | |
1910 | input_line_pointer += 2; | |
1911 | if (*input_line_pointer == ',') | |
1912 | input_line_pointer += 2; | |
1913 | ||
1914 | demand_empty_rest_of_line (); | |
1915 | ||
1916 | mri_comment_end (stop, stopc); | |
1917 | } | |
1918 | ||
1919 | void | |
39e6acbd | 1920 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1921 | { |
1922 | segT section; | |
3d540e93 | 1923 | int temp; |
252b5132 RH |
1924 | |
1925 | temp = get_absolute_expression (); | |
1926 | if (flag_readonly_data_in_text) | |
1927 | { | |
1928 | section = text_section; | |
1929 | temp += 1000; | |
1930 | } | |
1931 | else | |
1932 | section = data_section; | |
1933 | ||
1934 | subseg_set (section, (subsegT) temp); | |
1935 | ||
252b5132 RH |
1936 | demand_empty_rest_of_line (); |
1937 | } | |
1938 | ||
1939 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1940 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1941 | file name. This default definition may be overridden by the object | |
1942 | or CPU specific pseudo-ops. This function is also the default | |
1943 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1944 | .file. */ | |
1945 | ||
ecb4347a | 1946 | void |
f17c130b | 1947 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1948 | { |
1949 | #ifdef LISTING | |
1950 | if (listing) | |
1951 | listing_source_file (file); | |
1952 | #endif | |
1953 | register_dependency (file); | |
1954 | #ifdef obj_app_file | |
c04f5787 | 1955 | obj_app_file (file, appfile); |
ecb4347a DJ |
1956 | #endif |
1957 | } | |
1958 | ||
041ff4dd | 1959 | void |
39e6acbd | 1960 | s_app_file (int appfile) |
252b5132 | 1961 | { |
3d540e93 | 1962 | char *s; |
252b5132 RH |
1963 | int length; |
1964 | ||
041ff4dd | 1965 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1966 | if ((s = demand_copy_string (&length)) != 0) |
1967 | { | |
252b5132 | 1968 | int may_omit |
93e914b2 | 1969 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
1970 | |
1971 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1972 | backquote. */ |
252b5132 RH |
1973 | if (flag_m68k_mri |
1974 | && *input_line_pointer == '\'' | |
1975 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1976 | ++input_line_pointer; | |
1977 | ||
1978 | demand_empty_rest_of_line (); | |
041ff4dd | 1979 | if (!may_omit) |
c04f5787 | 1980 | s_app_file_string (s, appfile); |
252b5132 RH |
1981 | } |
1982 | } | |
1983 | ||
e9fc6c21 AO |
1984 | static int |
1985 | get_linefile_number (int *flag) | |
1986 | { | |
1987 | SKIP_WHITESPACE (); | |
1988 | ||
1989 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
1990 | return 0; | |
1991 | ||
1992 | *flag = get_absolute_expression (); | |
1993 | ||
1994 | return 1; | |
1995 | } | |
1996 | ||
252b5132 RH |
1997 | /* Handle the .appline pseudo-op. This is automatically generated by |
1998 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1999 | default definition may be overridden by the object or CPU specific | |
2000 | pseudo-ops. */ | |
2001 | ||
2002 | void | |
93e914b2 | 2003 | s_app_line (int appline) |
252b5132 | 2004 | { |
e9fc6c21 | 2005 | char *file = NULL; |
252b5132 RH |
2006 | int l; |
2007 | ||
2008 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
2009 | if (appline) |
2010 | l = get_absolute_expression (); | |
2011 | else if (!get_linefile_number (&l)) | |
2012 | { | |
2013 | ignore_rest_of_line (); | |
2014 | return; | |
2015 | } | |
2016 | ||
2017 | l--; | |
47837f8e NC |
2018 | |
2019 | if (l < -1) | |
252b5132 | 2020 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
2021 | Besides, it's silly. GCC however will generate a line number of |
2022 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
2023 | ||
fa94de6b | 2024 | # 0 "<built-in>" |
47837f8e NC |
2025 | |
2026 | We do not want to barf on this, especially since such files are used | |
2027 | in the GCC and GDB testsuites. So we check for negative line numbers | |
2028 | rather than non-positive line numbers. */ | |
0e389e77 | 2029 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 2030 | l + 1); |
252b5132 RH |
2031 | else |
2032 | { | |
93e914b2 | 2033 | int flags = 0; |
93e914b2 AO |
2034 | int length = 0; |
2035 | ||
2036 | if (!appline) | |
2037 | { | |
e9fc6c21 AO |
2038 | SKIP_WHITESPACE (); |
2039 | ||
2040 | if (*input_line_pointer == '"') | |
2041 | file = demand_copy_string (&length); | |
93e914b2 AO |
2042 | |
2043 | if (file) | |
2044 | { | |
2045 | int this_flag; | |
2046 | ||
e9fc6c21 | 2047 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
2048 | switch (this_flag) |
2049 | { | |
2050 | /* From GCC's cpp documentation: | |
2051 | 1: start of a new file. | |
2052 | 2: returning to a file after having included | |
fa94de6b | 2053 | another file. |
93e914b2 AO |
2054 | 3: following text comes from a system header file. |
2055 | 4: following text should be treated as extern "C". | |
2056 | ||
2057 | 4 is nonsensical for the assembler; 3, we don't | |
2058 | care about, so we ignore it just in case a | |
2059 | system header file is included while | |
2060 | preprocessing assembly. So 1 and 2 are all we | |
2061 | care about, and they are mutually incompatible. | |
2062 | new_logical_line_flags() demands this. */ | |
2063 | case 1: | |
2064 | case 2: | |
2065 | if (flags && flags != (1 << this_flag)) | |
2066 | as_warn (_("incompatible flag %i in line directive"), | |
2067 | this_flag); | |
2068 | else | |
2069 | flags |= 1 << this_flag; | |
2070 | break; | |
2071 | ||
2072 | case 3: | |
2073 | case 4: | |
2074 | /* We ignore these. */ | |
2075 | break; | |
2076 | ||
2077 | default: | |
2078 | as_warn (_("unsupported flag %i in line directive"), | |
2079 | this_flag); | |
2080 | break; | |
2081 | } | |
e9fc6c21 AO |
2082 | |
2083 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
2084 | file = 0; | |
93e914b2 AO |
2085 | } |
2086 | } | |
2087 | ||
e9fc6c21 AO |
2088 | if (appline || file) |
2089 | { | |
2090 | new_logical_line_flags (file, l, flags); | |
252b5132 | 2091 | #ifdef LISTING |
e9fc6c21 AO |
2092 | if (listing) |
2093 | listing_source_line (l); | |
252b5132 | 2094 | #endif |
e9fc6c21 | 2095 | } |
252b5132 | 2096 | } |
e9fc6c21 AO |
2097 | if (appline || file) |
2098 | demand_empty_rest_of_line (); | |
2099 | else | |
2100 | ignore_rest_of_line (); | |
252b5132 RH |
2101 | } |
2102 | ||
2103 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
2104 | read_a_source_file. */ | |
2105 | ||
2106 | void | |
39e6acbd | 2107 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2108 | { |
2109 | if (flag_mri) | |
2110 | { | |
2111 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 2112 | but we don't support that. */ |
252b5132 | 2113 | SKIP_WHITESPACE (); |
041ff4dd | 2114 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2115 | && *input_line_pointer != '*' |
2116 | && *input_line_pointer != '!') | |
2117 | as_warn (_("start address not supported")); | |
2118 | } | |
2119 | } | |
2120 | ||
2121 | /* Handle the .err pseudo-op. */ | |
2122 | ||
2123 | void | |
39e6acbd | 2124 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2125 | { |
2126 | as_bad (_(".err encountered")); | |
2127 | demand_empty_rest_of_line (); | |
d190d046 HPN |
2128 | } |
2129 | ||
2130 | /* Handle the .error and .warning pseudo-ops. */ | |
2131 | ||
2132 | void | |
2133 | s_errwarn (int err) | |
2134 | { | |
2135 | int len; | |
2136 | /* The purpose for the conditional assignment is not to | |
2137 | internationalize the directive itself, but that we need a | |
2138 | self-contained message, one that can be passed like the | |
2139 | demand_copy_C_string return value, and with no assumption on the | |
2140 | location of the name of the directive within the message. */ | |
6d4af3c2 | 2141 | const char *msg |
d190d046 HPN |
2142 | = (err ? _(".error directive invoked in source file") |
2143 | : _(".warning directive invoked in source file")); | |
2144 | ||
2145 | if (!is_it_end_of_statement ()) | |
2146 | { | |
2147 | if (*input_line_pointer != '\"') | |
2148 | { | |
2149 | as_bad (_("%s argument must be a string"), | |
2150 | err ? ".error" : ".warning"); | |
40a4d956 | 2151 | ignore_rest_of_line (); |
d190d046 HPN |
2152 | return; |
2153 | } | |
2154 | ||
2155 | msg = demand_copy_C_string (&len); | |
2156 | if (msg == NULL) | |
2157 | return; | |
2158 | } | |
2159 | ||
2160 | if (err) | |
2161 | as_bad ("%s", msg); | |
2162 | else | |
2163 | as_warn ("%s", msg); | |
2164 | demand_empty_rest_of_line (); | |
252b5132 RH |
2165 | } |
2166 | ||
2167 | /* Handle the MRI fail pseudo-op. */ | |
2168 | ||
2169 | void | |
39e6acbd | 2170 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2171 | { |
2172 | offsetT temp; | |
2173 | char *stop = NULL; | |
fb25138b | 2174 | char stopc = 0; |
252b5132 RH |
2175 | |
2176 | if (flag_mri) | |
2177 | stop = mri_comment_field (&stopc); | |
2178 | ||
2179 | temp = get_absolute_expression (); | |
2180 | if (temp >= 500) | |
2181 | as_warn (_(".fail %ld encountered"), (long) temp); | |
2182 | else | |
2183 | as_bad (_(".fail %ld encountered"), (long) temp); | |
2184 | ||
2185 | demand_empty_rest_of_line (); | |
2186 | ||
2187 | if (flag_mri) | |
2188 | mri_comment_end (stop, stopc); | |
2189 | } | |
2190 | ||
041ff4dd | 2191 | void |
39e6acbd | 2192 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2193 | { |
2194 | expressionS rep_exp; | |
2195 | long size = 1; | |
3d540e93 | 2196 | long fill = 0; |
252b5132 RH |
2197 | char *p; |
2198 | ||
2199 | #ifdef md_flush_pending_output | |
2200 | md_flush_pending_output (); | |
2201 | #endif | |
2202 | ||
cc3f603a JM |
2203 | #ifdef md_cons_align |
2204 | md_cons_align (1); | |
2205 | #endif | |
2206 | ||
4f2358bc | 2207 | expression (&rep_exp); |
252b5132 RH |
2208 | if (*input_line_pointer == ',') |
2209 | { | |
2210 | input_line_pointer++; | |
2211 | size = get_absolute_expression (); | |
2212 | if (*input_line_pointer == ',') | |
2213 | { | |
2214 | input_line_pointer++; | |
2215 | fill = get_absolute_expression (); | |
2216 | } | |
2217 | } | |
2218 | ||
2219 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
2220 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
2221 | if (size > BSD_FILL_SIZE_CROCK_8) | |
2222 | { | |
0e389e77 | 2223 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
2224 | size = BSD_FILL_SIZE_CROCK_8; |
2225 | } | |
2226 | if (size < 0) | |
2227 | { | |
0e389e77 | 2228 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
2229 | size = 0; |
2230 | } | |
2231 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
2232 | { | |
2233 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 2234 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
2235 | size = 0; |
2236 | } | |
2237 | ||
2238 | if (size && !need_pass_2) | |
2239 | { | |
ec9ab52c JB |
2240 | if (now_seg == absolute_section) |
2241 | { | |
2242 | if (rep_exp.X_op != O_constant) | |
2243 | as_bad (_("non-constant fill count for absolute section")); | |
2244 | else if (fill && rep_exp.X_add_number != 0) | |
2245 | as_bad (_("attempt to fill absolute section with non-zero value")); | |
2246 | abs_section_offset += rep_exp.X_add_number * size; | |
2247 | } | |
2248 | else if (fill | |
2249 | && (rep_exp.X_op != O_constant || rep_exp.X_add_number != 0) | |
2250 | && in_bss ()) | |
2251 | as_bad (_("attempt to fill section `%s' with non-zero value"), | |
2252 | segment_name (now_seg)); | |
2253 | ||
252b5132 RH |
2254 | if (rep_exp.X_op == O_constant) |
2255 | { | |
2256 | p = frag_var (rs_fill, (int) size, (int) size, | |
2257 | (relax_substateT) 0, (symbolS *) 0, | |
2258 | (offsetT) rep_exp.X_add_number, | |
2259 | (char *) 0); | |
2260 | } | |
2261 | else | |
2262 | { | |
2263 | /* We don't have a constant repeat count, so we can't use | |
2264 | rs_fill. We can get the same results out of rs_space, | |
2265 | but its argument is in bytes, so we must multiply the | |
2266 | repeat count by size. */ | |
2267 | ||
2268 | symbolS *rep_sym; | |
2269 | rep_sym = make_expr_symbol (&rep_exp); | |
2270 | if (size != 1) | |
2271 | { | |
2272 | expressionS size_exp; | |
2273 | size_exp.X_op = O_constant; | |
2274 | size_exp.X_add_number = size; | |
2275 | ||
2276 | rep_exp.X_op = O_multiply; | |
2277 | rep_exp.X_add_symbol = rep_sym; | |
2278 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
2279 | rep_exp.X_add_number = 0; | |
2280 | rep_sym = make_expr_symbol (&rep_exp); | |
2281 | } | |
2282 | ||
2283 | p = frag_var (rs_space, (int) size, (int) size, | |
2284 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
2285 | } | |
f0e652b4 | 2286 | |
252b5132 | 2287 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2288 | |
252b5132 | 2289 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2290 | flavoured AS. The following bizarre behaviour is to be |
2291 | compatible with above. I guess they tried to take up to 8 | |
2292 | bytes from a 4-byte expression and they forgot to sign | |
2293 | extend. */ | |
252b5132 RH |
2294 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2295 | md_number_to_chars (p, (valueT) fill, | |
2296 | (size > BSD_FILL_SIZE_CROCK_4 | |
2297 | ? BSD_FILL_SIZE_CROCK_4 | |
2298 | : (int) size)); | |
2299 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2300 | but emits no error message because it seems a legal thing to do. |
2301 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2302 | compiler. */ |
252b5132 RH |
2303 | } |
2304 | demand_empty_rest_of_line (); | |
2305 | } | |
2306 | ||
041ff4dd | 2307 | void |
39e6acbd | 2308 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2309 | { |
2310 | char *name; | |
2311 | int c; | |
2312 | symbolS *symbolP; | |
2313 | char *stop = NULL; | |
fb25138b | 2314 | char stopc = 0; |
252b5132 RH |
2315 | |
2316 | if (flag_mri) | |
2317 | stop = mri_comment_field (&stopc); | |
2318 | ||
2319 | do | |
2320 | { | |
7bfd842d NC |
2321 | if ((name = read_symbol_name ()) == NULL) |
2322 | return; | |
2323 | ||
252b5132 | 2324 | symbolP = symbol_find_or_make (name); |
58b5739a RH |
2325 | S_SET_EXTERNAL (symbolP); |
2326 | ||
252b5132 | 2327 | SKIP_WHITESPACE (); |
58b5739a | 2328 | c = *input_line_pointer; |
252b5132 RH |
2329 | if (c == ',') |
2330 | { | |
2331 | input_line_pointer++; | |
2332 | SKIP_WHITESPACE (); | |
0e389e77 | 2333 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2334 | c = '\n'; |
2335 | } | |
7bfd842d NC |
2336 | |
2337 | free (name); | |
252b5132 RH |
2338 | } |
2339 | while (c == ','); | |
2340 | ||
2341 | demand_empty_rest_of_line (); | |
2342 | ||
2343 | if (flag_mri) | |
2344 | mri_comment_end (stop, stopc); | |
2345 | } | |
2346 | ||
2347 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2348 | ||
2349 | void | |
39e6acbd | 2350 | s_irp (int irpc) |
252b5132 | 2351 | { |
3b4dbbbf TS |
2352 | char * eol; |
2353 | const char * file; | |
252b5132 RH |
2354 | unsigned int line; |
2355 | sb s; | |
2356 | const char *err; | |
2357 | sb out; | |
2358 | ||
3b4dbbbf | 2359 | file = as_where (&line); |
252b5132 | 2360 | |
40a4d956 | 2361 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2362 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2363 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2364 | input_line_pointer = eol; | |
252b5132 RH |
2365 | |
2366 | sb_new (&out); | |
2367 | ||
7592cfd7 | 2368 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2369 | if (err != NULL) |
2370 | as_bad_where (file, line, "%s", err); | |
2371 | ||
2372 | sb_kill (&s); | |
2373 | ||
9f10757c | 2374 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2375 | sb_kill (&out); |
2376 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2377 | } | |
2378 | ||
2379 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2380 | the section to only be linked once. However, this is not supported | |
2381 | by most object file formats. This takes an optional argument, | |
2382 | which is what to do about duplicates. */ | |
2383 | ||
2384 | void | |
39e6acbd | 2385 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2386 | { |
2387 | enum linkonce_type type; | |
2388 | ||
2389 | SKIP_WHITESPACE (); | |
2390 | ||
2391 | type = LINKONCE_DISCARD; | |
2392 | ||
041ff4dd | 2393 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2394 | { |
2395 | char *s; | |
2396 | char c; | |
2397 | ||
d02603dc | 2398 | c = get_symbol_name (& s); |
252b5132 RH |
2399 | if (strcasecmp (s, "discard") == 0) |
2400 | type = LINKONCE_DISCARD; | |
2401 | else if (strcasecmp (s, "one_only") == 0) | |
2402 | type = LINKONCE_ONE_ONLY; | |
2403 | else if (strcasecmp (s, "same_size") == 0) | |
2404 | type = LINKONCE_SAME_SIZE; | |
2405 | else if (strcasecmp (s, "same_contents") == 0) | |
2406 | type = LINKONCE_SAME_CONTENTS; | |
2407 | else | |
2408 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2409 | ||
d02603dc | 2410 | (void) restore_line_pointer (c); |
252b5132 RH |
2411 | } |
2412 | ||
2413 | #ifdef obj_handle_link_once | |
2414 | obj_handle_link_once (type); | |
2415 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2416 | { |
2417 | flagword flags; | |
2418 | ||
2419 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2420 | as_warn (_(".linkonce is not supported for this object file format")); | |
2421 | ||
2422 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2423 | flags |= SEC_LINK_ONCE; | |
2424 | switch (type) | |
2425 | { | |
2426 | default: | |
2427 | abort (); | |
2428 | case LINKONCE_DISCARD: | |
2429 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2430 | break; | |
2431 | case LINKONCE_ONE_ONLY: | |
2432 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2433 | break; | |
2434 | case LINKONCE_SAME_SIZE: | |
2435 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2436 | break; | |
2437 | case LINKONCE_SAME_CONTENTS: | |
2438 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2439 | break; | |
2440 | } | |
041ff4dd | 2441 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2442 | as_bad (_("bfd_set_section_flags: %s"), |
2443 | bfd_errmsg (bfd_get_error ())); | |
2444 | } | |
252b5132 RH |
2445 | #endif /* ! defined (obj_handle_link_once) */ |
2446 | ||
2447 | demand_empty_rest_of_line (); | |
2448 | } | |
2449 | ||
e13bab5a | 2450 | void |
9136aa49 | 2451 | bss_alloc (symbolS *symbolP, addressT size, unsigned int align) |
252b5132 | 2452 | { |
e13bab5a | 2453 | char *pfrag; |
252b5132 RH |
2454 | segT current_seg = now_seg; |
2455 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2456 | segT bss_seg = bss_section; |
2457 | ||
252b5132 RH |
2458 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2459 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2460 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2461 | { | |
2462 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2463 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2464 | { |
2465 | bss_seg = subseg_new (".sbss", 1); | |
2466 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2467 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2468 | as_warn (_("error setting flags for \".sbss\": %s"), |
2469 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2470 | } |
2471 | } | |
2472 | #endif | |
e13bab5a | 2473 | subseg_set (bss_seg, 1); |
8684e216 | 2474 | |
9136aa49 | 2475 | if (align > OCTETS_PER_BYTE_POWER) |
041ff4dd | 2476 | { |
e13bab5a AM |
2477 | record_alignment (bss_seg, align); |
2478 | frag_align (align, 0, 0); | |
041ff4dd | 2479 | } |
252b5132 | 2480 | |
e13bab5a AM |
2481 | /* Detach from old frag. */ |
2482 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2483 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2484 | |
e13bab5a AM |
2485 | symbol_set_frag (symbolP, frag_now); |
2486 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2487 | *pfrag = 0; | |
f0e652b4 | 2488 | |
e13bab5a AM |
2489 | #ifdef S_SET_SIZE |
2490 | S_SET_SIZE (symbolP, size); | |
2491 | #endif | |
2492 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2493 | |
e13bab5a AM |
2494 | #ifdef OBJ_COFF |
2495 | /* The symbol may already have been created with a preceding | |
2496 | ".globl" directive -- be careful not to step on storage class | |
2497 | in that case. Otherwise, set it to static. */ | |
2498 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2499 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2500 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2501 | |
e13bab5a AM |
2502 | subseg_set (current_seg, current_subseg); |
2503 | } | |
f0e652b4 | 2504 | |
e13bab5a AM |
2505 | offsetT |
2506 | parse_align (int align_bytes) | |
2507 | { | |
2508 | expressionS exp; | |
2509 | addressT align; | |
252b5132 | 2510 | |
e13bab5a AM |
2511 | SKIP_WHITESPACE (); |
2512 | if (*input_line_pointer != ',') | |
2513 | { | |
2514 | no_align: | |
2515 | as_bad (_("expected alignment after size")); | |
2516 | ignore_rest_of_line (); | |
2517 | return -1; | |
2518 | } | |
f0e652b4 | 2519 | |
e13bab5a AM |
2520 | input_line_pointer++; |
2521 | SKIP_WHITESPACE (); | |
f0e652b4 | 2522 | |
e13bab5a AM |
2523 | align = get_absolute_expr (&exp); |
2524 | if (exp.X_op == O_absent) | |
2525 | goto no_align; | |
2526 | ||
2527 | if (!exp.X_unsigned) | |
2528 | { | |
2529 | as_warn (_("alignment negative; 0 assumed")); | |
2530 | align = 0; | |
041ff4dd | 2531 | } |
e13bab5a AM |
2532 | |
2533 | if (align_bytes && align != 0) | |
252b5132 | 2534 | { |
e13bab5a AM |
2535 | /* convert to a power of 2 alignment */ |
2536 | unsigned int alignp2 = 0; | |
2537 | while ((align & 1) == 0) | |
2538 | align >>= 1, ++alignp2; | |
2539 | if (align != 1) | |
252b5132 | 2540 | { |
e13bab5a AM |
2541 | as_bad (_("alignment not a power of 2")); |
2542 | ignore_rest_of_line (); | |
2543 | return -1; | |
252b5132 | 2544 | } |
e13bab5a | 2545 | align = alignp2; |
252b5132 | 2546 | } |
e13bab5a AM |
2547 | return align; |
2548 | } | |
252b5132 | 2549 | |
e13bab5a AM |
2550 | /* Called from s_comm_internal after symbol name and size have been |
2551 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2552 | 1 if this was a ".bss" directive which has a 3rd argument | |
2553 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2554 | with alignment in bytes. */ | |
252b5132 | 2555 | |
13c56984 | 2556 | symbolS * |
e13bab5a AM |
2557 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2558 | { | |
2559 | addressT align = 0; | |
252b5132 | 2560 | |
e13bab5a AM |
2561 | if (needs_align) |
2562 | { | |
2563 | align = parse_align (needs_align - 1); | |
2564 | if (align == (addressT) -1) | |
2565 | return NULL; | |
252b5132 RH |
2566 | } |
2567 | else | |
e13bab5a AM |
2568 | /* Assume some objects may require alignment on some systems. */ |
2569 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2570 | |
e13bab5a AM |
2571 | bss_alloc (symbolP, size, align); |
2572 | return symbolP; | |
041ff4dd | 2573 | } |
252b5132 RH |
2574 | |
2575 | void | |
39e6acbd | 2576 | s_lcomm (int needs_align) |
252b5132 | 2577 | { |
e13bab5a | 2578 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2579 | } |
2580 | ||
041ff4dd | 2581 | void |
39e6acbd | 2582 | s_lcomm_bytes (int needs_align) |
252b5132 | 2583 | { |
e13bab5a | 2584 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2585 | } |
2586 | ||
041ff4dd | 2587 | void |
39e6acbd | 2588 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2589 | { |
3d540e93 | 2590 | char *name; |
252b5132 | 2591 | expressionS exp; |
3d540e93 | 2592 | symbolS *symbolP; |
252b5132 | 2593 | |
041ff4dd | 2594 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
7bfd842d NC |
2595 | if ((name = read_symbol_name ()) == NULL) |
2596 | return; | |
f0e652b4 | 2597 | |
252b5132 RH |
2598 | if (*input_line_pointer != ',') |
2599 | { | |
0e389e77 | 2600 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 2601 | goto err_out; |
252b5132 | 2602 | } |
f0e652b4 | 2603 | |
252b5132 | 2604 | input_line_pointer++; |
9497f5ac | 2605 | expression_and_evaluate (&exp); |
f0e652b4 | 2606 | |
252b5132 RH |
2607 | if (exp.X_op != O_constant |
2608 | && exp.X_op != O_register) | |
2609 | { | |
2610 | as_bad (_("bad expression")); | |
7bfd842d | 2611 | goto err_out; |
252b5132 | 2612 | } |
f0e652b4 | 2613 | |
252b5132 RH |
2614 | symbolP = symbol_find_or_make (name); |
2615 | ||
86ebace2 | 2616 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2617 | { |
2618 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2619 | keep the "external" bit. */ |
252b5132 RH |
2620 | S_SET_SEGMENT (symbolP, |
2621 | (exp.X_op == O_constant | |
2622 | ? absolute_section | |
2623 | : reg_section)); | |
2624 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2625 | } | |
2626 | else | |
2627 | { | |
0e389e77 | 2628 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2629 | } |
f0e652b4 | 2630 | |
252b5132 | 2631 | demand_empty_rest_of_line (); |
7bfd842d NC |
2632 | free (name); |
2633 | return; | |
2634 | ||
2635 | err_out: | |
2636 | ignore_rest_of_line (); | |
2637 | free (name); | |
2638 | return; | |
041ff4dd | 2639 | } |
252b5132 | 2640 | |
0822d075 NC |
2641 | /* Read a line into an sb. Returns the character that ended the line |
2642 | or zero if there are no more lines. */ | |
252b5132 RH |
2643 | |
2644 | static int | |
7592cfd7 | 2645 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2646 | { |
40a4d956 | 2647 | char *eol; |
252b5132 RH |
2648 | |
2649 | if (input_line_pointer[-1] == '\n') | |
2650 | bump_line_counters (); | |
2651 | ||
2652 | if (input_line_pointer >= buffer_limit) | |
2653 | { | |
2654 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2655 | if (buffer_limit == 0) | |
2656 | return 0; | |
2657 | } | |
2658 | ||
7592cfd7 | 2659 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2660 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2661 | input_line_pointer = eol; | |
f0e652b4 | 2662 | |
0822d075 NC |
2663 | /* Don't skip multiple end-of-line characters, because that breaks support |
2664 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2665 | characters but isn't. Instead just skip one end of line character and | |
2666 | return the character skipped so that the caller can re-insert it if | |
2667 | necessary. */ | |
40a4d956 | 2668 | return *input_line_pointer++; |
252b5132 RH |
2669 | } |
2670 | ||
39a45edc | 2671 | static size_t |
7592cfd7 NC |
2672 | get_non_macro_line_sb (sb *line) |
2673 | { | |
2674 | return get_line_sb (line, 0); | |
2675 | } | |
2676 | ||
39a45edc | 2677 | static size_t |
7592cfd7 NC |
2678 | get_macro_line_sb (sb *line) |
2679 | { | |
2680 | return get_line_sb (line, 1); | |
2681 | } | |
2682 | ||
fea17916 | 2683 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2684 | |
2685 | void | |
39e6acbd | 2686 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2687 | { |
3b4dbbbf TS |
2688 | char *eol; |
2689 | const char * file; | |
252b5132 RH |
2690 | unsigned int line; |
2691 | sb s; | |
252b5132 RH |
2692 | const char *err; |
2693 | const char *name; | |
2694 | ||
3b4dbbbf | 2695 | file = as_where (&line); |
252b5132 | 2696 | |
40a4d956 | 2697 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2698 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2699 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2700 | input_line_pointer = eol; | |
252b5132 | 2701 | |
252b5132 | 2702 | if (line_label != NULL) |
360e86f1 JB |
2703 | { |
2704 | sb label; | |
d2ae702c | 2705 | size_t len; |
252b5132 | 2706 | |
d2ae702c L |
2707 | name = S_GET_NAME (line_label); |
2708 | len = strlen (name); | |
2709 | sb_build (&label, len); | |
2710 | sb_add_buffer (&label, name, len); | |
7592cfd7 | 2711 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2712 | sb_kill (&label); |
2713 | } | |
2714 | else | |
7592cfd7 | 2715 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2716 | if (err != NULL) |
02ddf156 | 2717 | as_bad_where (file, line, err, name); |
252b5132 RH |
2718 | else |
2719 | { | |
2720 | if (line_label != NULL) | |
2721 | { | |
5e75c3ab | 2722 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2723 | S_SET_VALUE (line_label, 0); |
2b47531b | 2724 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2725 | } |
2726 | ||
abd63a32 | 2727 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2728 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2729 | || (!flag_m68k_mri |
252b5132 RH |
2730 | && *name == '.' |
2731 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2732 | as_warn_where (file, |
2733 | line, | |
2734 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2735 | name); |
2736 | } | |
2737 | ||
2738 | sb_kill (&s); | |
2739 | } | |
2740 | ||
2741 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2742 | expansion. */ | |
2743 | ||
2744 | void | |
39e6acbd | 2745 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2746 | { |
5808f4a6 NC |
2747 | if (macro_nest) |
2748 | { | |
2749 | cond_exit_macro (macro_nest); | |
2750 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2751 | } | |
2752 | else | |
2753 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2754 | } |
2755 | ||
2756 | /* Switch in and out of MRI mode. */ | |
2757 | ||
2758 | void | |
39e6acbd | 2759 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2760 | { |
3d540e93 NC |
2761 | int on; |
2762 | #ifdef MRI_MODE_CHANGE | |
2763 | int old_flag; | |
2764 | #endif | |
252b5132 RH |
2765 | |
2766 | on = get_absolute_expression (); | |
3d540e93 | 2767 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2768 | old_flag = flag_mri; |
3d540e93 | 2769 | #endif |
252b5132 RH |
2770 | if (on != 0) |
2771 | { | |
2772 | flag_mri = 1; | |
2773 | #ifdef TC_M68K | |
2774 | flag_m68k_mri = 1; | |
2775 | #endif | |
2776 | macro_mri_mode (1); | |
2777 | } | |
2778 | else | |
2779 | { | |
2780 | flag_mri = 0; | |
abd63a32 | 2781 | #ifdef TC_M68K |
252b5132 | 2782 | flag_m68k_mri = 0; |
abd63a32 | 2783 | #endif |
252b5132 RH |
2784 | macro_mri_mode (0); |
2785 | } | |
2786 | ||
2787 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2788 | update the operator rankings. */ | |
2789 | expr_set_precedence (); | |
2790 | ||
2791 | #ifdef MRI_MODE_CHANGE | |
2792 | if (on != old_flag) | |
2793 | MRI_MODE_CHANGE (on); | |
2794 | #endif | |
2795 | ||
2796 | demand_empty_rest_of_line (); | |
2797 | } | |
2798 | ||
2799 | /* Handle changing the location counter. */ | |
2800 | ||
2801 | static void | |
39e6acbd | 2802 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 | 2803 | { |
259af69e AM |
2804 | if (segment != now_seg |
2805 | && segment != absolute_section | |
2806 | && segment != expr_section) | |
0e389e77 | 2807 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2808 | |
2809 | if (now_seg == absolute_section) | |
2810 | { | |
2811 | if (fill != 0) | |
2812 | as_warn (_("ignoring fill value in absolute section")); | |
2813 | if (exp->X_op != O_constant) | |
2814 | { | |
2815 | as_bad (_("only constant offsets supported in absolute section")); | |
2816 | exp->X_add_number = 0; | |
2817 | } | |
2818 | abs_section_offset = exp->X_add_number; | |
2819 | } | |
2820 | else | |
2821 | { | |
2822 | char *p; | |
2289f85d AM |
2823 | symbolS *sym = exp->X_add_symbol; |
2824 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2825 | |
ec9ab52c JB |
2826 | if (fill && in_bss ()) |
2827 | as_warn (_("ignoring fill value in section `%s'"), | |
2828 | segment_name (now_seg)); | |
2829 | ||
2289f85d AM |
2830 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2831 | { | |
2832 | /* Handle complex expressions. */ | |
2833 | sym = make_expr_symbol (exp); | |
2834 | off = 0; | |
2835 | } | |
2836 | ||
2837 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2838 | *p = fill; |
2839 | } | |
2840 | } | |
2841 | ||
041ff4dd | 2842 | void |
39e6acbd | 2843 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2844 | { |
3d540e93 | 2845 | segT segment; |
252b5132 | 2846 | expressionS exp; |
3d540e93 | 2847 | long temp_fill; |
252b5132 RH |
2848 | |
2849 | #ifdef md_flush_pending_output | |
2850 | md_flush_pending_output (); | |
2851 | #endif | |
2852 | ||
2853 | /* The m68k MRI assembler has a different meaning for .org. It | |
2854 | means to create an absolute section at a given address. We can't | |
2855 | support that--use a linker script instead. */ | |
2856 | if (flag_m68k_mri) | |
2857 | { | |
2858 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2859 | ignore_rest_of_line (); | |
2860 | return; | |
2861 | } | |
2862 | ||
2863 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2864 | thing as a sub-segment-relative origin. Any absolute origin is | |
2865 | given a warning, then assumed to be segment-relative. Any | |
2866 | segmented origin expression ("foo+42") had better be in the right | |
2867 | segment or the .org is ignored. | |
2868 | ||
2869 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2870 | we never know sub-segment sizes when we are reading code. BSD | |
2871 | will crash trying to emit negative numbers of filler bytes in | |
2872 | certain .orgs. We don't crash, but see as-write for that code. | |
2873 | ||
2874 | Don't make frag if need_pass_2==1. */ | |
2875 | segment = get_known_segmented_expression (&exp); | |
2876 | if (*input_line_pointer == ',') | |
2877 | { | |
2878 | input_line_pointer++; | |
2879 | temp_fill = get_absolute_expression (); | |
2880 | } | |
2881 | else | |
2882 | temp_fill = 0; | |
2883 | ||
2884 | if (!need_pass_2) | |
2885 | do_org (segment, &exp, temp_fill); | |
2886 | ||
2887 | demand_empty_rest_of_line (); | |
041ff4dd | 2888 | } |
252b5132 RH |
2889 | |
2890 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2891 | called by the obj-format routine which handles section changing | |
2892 | when in MRI mode. It will create a new section, and return it. It | |
2893 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2894 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2895 | |
2896 | void | |
39e6acbd | 2897 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2898 | { |
2899 | #ifdef TC_M68K | |
2900 | ||
2901 | char *name; | |
2902 | char c; | |
2903 | segT seg; | |
2904 | ||
2905 | SKIP_WHITESPACE (); | |
041ff4dd | 2906 | |
252b5132 | 2907 | name = input_line_pointer; |
3882b010 | 2908 | if (!ISDIGIT (*name)) |
d02603dc | 2909 | c = get_symbol_name (& name); |
252b5132 RH |
2910 | else |
2911 | { | |
2912 | do | |
2913 | { | |
2914 | ++input_line_pointer; | |
2915 | } | |
3882b010 | 2916 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2917 | |
252b5132 RH |
2918 | c = *input_line_pointer; |
2919 | *input_line_pointer = '\0'; | |
2920 | } | |
2921 | ||
2922 | name = xstrdup (name); | |
2923 | ||
d02603dc | 2924 | c = restore_line_pointer (c); |
252b5132 RH |
2925 | |
2926 | seg = subseg_new (name, 0); | |
2927 | ||
d02603dc | 2928 | if (c == ',') |
252b5132 | 2929 | { |
9136aa49 | 2930 | unsigned int align; |
252b5132 RH |
2931 | |
2932 | ++input_line_pointer; | |
2933 | align = get_absolute_expression (); | |
2934 | record_alignment (seg, align); | |
2935 | } | |
2936 | ||
2937 | *type = 'C'; | |
2938 | if (*input_line_pointer == ',') | |
2939 | { | |
2940 | c = *++input_line_pointer; | |
3882b010 | 2941 | c = TOUPPER (c); |
252b5132 RH |
2942 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2943 | *type = c; | |
2944 | else | |
2945 | as_bad (_("unrecognized section type")); | |
2946 | ++input_line_pointer; | |
2947 | ||
252b5132 RH |
2948 | { |
2949 | flagword flags; | |
2950 | ||
2951 | flags = SEC_NO_FLAGS; | |
2952 | if (*type == 'C') | |
2953 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2954 | else if (*type == 'D' || *type == 'M') | |
2955 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2956 | else if (*type == 'R') | |
2957 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2958 | if (flags != SEC_NO_FLAGS) | |
2959 | { | |
041ff4dd | 2960 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2961 | as_warn (_("error setting flags for \"%s\": %s"), |
2962 | bfd_section_name (stdoutput, seg), | |
2963 | bfd_errmsg (bfd_get_error ())); | |
2964 | } | |
2965 | } | |
252b5132 RH |
2966 | } |
2967 | ||
2968 | /* Ignore the HP type. */ | |
2969 | if (*input_line_pointer == ',') | |
2970 | input_line_pointer += 2; | |
2971 | ||
2972 | demand_empty_rest_of_line (); | |
2973 | ||
2974 | #else /* ! TC_M68K */ | |
2975 | #ifdef TC_I960 | |
2976 | ||
2977 | char *name; | |
2978 | char c; | |
2979 | segT seg; | |
2980 | ||
2981 | SKIP_WHITESPACE (); | |
2982 | ||
d02603dc | 2983 | c = get_symbol_name (& name); |
252b5132 RH |
2984 | |
2985 | name = xstrdup (name); | |
2986 | ||
d02603dc | 2987 | c = restore_line_pointer (c); |
252b5132 RH |
2988 | |
2989 | seg = subseg_new (name, 0); | |
2990 | ||
d02603dc | 2991 | if (c != ',') |
252b5132 RH |
2992 | *type = 'C'; |
2993 | else | |
2994 | { | |
2995 | char *sectype; | |
2996 | ||
2997 | ++input_line_pointer; | |
2998 | SKIP_WHITESPACE (); | |
d02603dc | 2999 | c = get_symbol_name (& sectype); |
252b5132 RH |
3000 | if (*sectype == '\0') |
3001 | *type = 'C'; | |
3002 | else if (strcasecmp (sectype, "text") == 0) | |
3003 | *type = 'C'; | |
3004 | else if (strcasecmp (sectype, "data") == 0) | |
3005 | *type = 'D'; | |
3006 | else if (strcasecmp (sectype, "romdata") == 0) | |
3007 | *type = 'R'; | |
3008 | else | |
3009 | as_warn (_("unrecognized section type `%s'"), sectype); | |
d02603dc | 3010 | (void) restore_line_pointer (c); |
252b5132 RH |
3011 | } |
3012 | ||
3013 | if (*input_line_pointer == ',') | |
3014 | { | |
3015 | char *seccmd; | |
3016 | ||
3017 | ++input_line_pointer; | |
3018 | SKIP_WHITESPACE (); | |
d02603dc | 3019 | c = get_symbol_name (& seccmd); |
252b5132 RH |
3020 | if (strcasecmp (seccmd, "absolute") == 0) |
3021 | { | |
3022 | as_bad (_("absolute sections are not supported")); | |
3023 | *input_line_pointer = c; | |
3024 | ignore_rest_of_line (); | |
3025 | return; | |
3026 | } | |
3027 | else if (strcasecmp (seccmd, "align") == 0) | |
3028 | { | |
9136aa49 | 3029 | unsigned int align; |
252b5132 | 3030 | |
d02603dc | 3031 | (void) restore_line_pointer (c); |
252b5132 RH |
3032 | align = get_absolute_expression (); |
3033 | record_alignment (seg, align); | |
3034 | } | |
3035 | else | |
3036 | { | |
3037 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
d02603dc | 3038 | (void) restore_line_pointer (c); |
252b5132 RH |
3039 | } |
3040 | } | |
3041 | ||
041ff4dd | 3042 | demand_empty_rest_of_line (); |
252b5132 RH |
3043 | |
3044 | #else /* ! TC_I960 */ | |
3045 | /* The MRI assembler seems to use different forms of .sect for | |
3046 | different targets. */ | |
3047 | as_bad ("MRI mode not supported for this target"); | |
3048 | ignore_rest_of_line (); | |
3049 | #endif /* ! TC_I960 */ | |
3050 | #endif /* ! TC_M68K */ | |
3051 | } | |
3052 | ||
3053 | /* Handle the .print pseudo-op. */ | |
3054 | ||
3055 | void | |
39e6acbd | 3056 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3057 | { |
3058 | char *s; | |
3059 | int len; | |
3060 | ||
3061 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
3062 | if (s != NULL) |
3063 | printf ("%s\n", s); | |
252b5132 RH |
3064 | demand_empty_rest_of_line (); |
3065 | } | |
3066 | ||
3067 | /* Handle the .purgem pseudo-op. */ | |
3068 | ||
3069 | void | |
39e6acbd | 3070 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3071 | { |
3072 | if (is_it_end_of_statement ()) | |
3073 | { | |
3074 | demand_empty_rest_of_line (); | |
3075 | return; | |
3076 | } | |
3077 | ||
3078 | do | |
3079 | { | |
3080 | char *name; | |
3081 | char c; | |
3082 | ||
3083 | SKIP_WHITESPACE (); | |
d02603dc | 3084 | c = get_symbol_name (& name); |
252b5132 RH |
3085 | delete_macro (name); |
3086 | *input_line_pointer = c; | |
d02603dc | 3087 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
3088 | } |
3089 | while (*input_line_pointer++ == ','); | |
3090 | ||
3091 | --input_line_pointer; | |
3092 | demand_empty_rest_of_line (); | |
3093 | } | |
3094 | ||
057f53c1 | 3095 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 3096 | |
057f53c1 JB |
3097 | static void |
3098 | s_bad_end (int endr) | |
7f28ab9d | 3099 | { |
cc643b88 | 3100 | as_warn (_(".end%c encountered without preceding %s"), |
057f53c1 JB |
3101 | endr ? 'r' : 'm', |
3102 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
3103 | demand_empty_rest_of_line (); |
3104 | } | |
3105 | ||
3106 | /* Handle the .rept pseudo-op. */ | |
3107 | ||
252b5132 | 3108 | void |
39e6acbd | 3109 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3110 | { |
808811a3 | 3111 | size_t count; |
252b5132 | 3112 | |
808811a3 | 3113 | count = (size_t) get_absolute_expression (); |
252b5132 | 3114 | |
041ff4dd | 3115 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
3116 | } |
3117 | ||
3118 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 3119 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
3120 | |
3121 | void | |
808811a3 | 3122 | do_repeat (size_t count, const char *start, const char *end) |
6dc19fc4 TW |
3123 | { |
3124 | sb one; | |
3125 | sb many; | |
3126 | ||
808811a3 NC |
3127 | if (((ssize_t) count) < 0) |
3128 | { | |
3129 | as_bad (_("negative count for %s - ignored"), start); | |
3130 | count = 0; | |
3131 | } | |
3132 | ||
252b5132 | 3133 | sb_new (&one); |
7592cfd7 | 3134 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 3135 | { |
6dc19fc4 | 3136 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
3137 | return; |
3138 | } | |
3139 | ||
d2ae702c | 3140 | sb_build (&many, count * one.len); |
252b5132 RH |
3141 | while (count-- > 0) |
3142 | sb_add_sb (&many, &one); | |
3143 | ||
3144 | sb_kill (&one); | |
3145 | ||
9f10757c | 3146 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
3147 | sb_kill (&many); |
3148 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3149 | } | |
3150 | ||
c7927a3c | 3151 | /* Like do_repeat except that any text matching EXPANDER in the |
33eaf5de | 3152 | block is replaced by the iteration count. */ |
c7927a3c NC |
3153 | |
3154 | void | |
808811a3 | 3155 | do_repeat_with_expander (size_t count, |
c7927a3c NC |
3156 | const char * start, |
3157 | const char * end, | |
3158 | const char * expander) | |
3159 | { | |
3160 | sb one; | |
3161 | sb many; | |
3162 | ||
808811a3 NC |
3163 | if (((ssize_t) count) < 0) |
3164 | { | |
3165 | as_bad (_("negative count for %s - ignored"), start); | |
3166 | count = 0; | |
3167 | } | |
3168 | ||
c7927a3c NC |
3169 | sb_new (&one); |
3170 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3171 | { | |
3172 | as_bad (_("%s without %s"), start, end); | |
3173 | return; | |
3174 | } | |
3175 | ||
3176 | sb_new (&many); | |
3177 | ||
3178 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3179 | { | |
3180 | while (count -- > 0) | |
3181 | { | |
3182 | int len; | |
3183 | char * sub; | |
3184 | sb processed; | |
3185 | ||
d2ae702c | 3186 | sb_build (& processed, one.len); |
c7927a3c NC |
3187 | sb_add_sb (& processed, & one); |
3188 | sub = strstr (processed.ptr, expander); | |
808811a3 | 3189 | len = sprintf (sub, "%lu", (unsigned long) count); |
c7927a3c NC |
3190 | gas_assert (len < 8); |
3191 | strcpy (sub + len, sub + 8); | |
3192 | processed.len -= (8 - len); | |
3193 | sb_add_sb (& many, & processed); | |
3194 | sb_kill (& processed); | |
3195 | } | |
3196 | } | |
3197 | else | |
3198 | while (count-- > 0) | |
3199 | sb_add_sb (&many, &one); | |
3200 | ||
3201 | sb_kill (&one); | |
3202 | ||
3203 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3204 | sb_kill (&many); | |
3205 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3206 | } | |
3207 | ||
6dc19fc4 TW |
3208 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3209 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3210 | are properly nested. |
6dc19fc4 TW |
3211 | |
3212 | This function makes it easier to implement a premature "break" out of the | |
3213 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3214 | such as line substitutions. */ |
6dc19fc4 TW |
3215 | |
3216 | void | |
39e6acbd | 3217 | end_repeat (int extra) |
6dc19fc4 TW |
3218 | { |
3219 | cond_exit_macro (macro_nest); | |
3220 | while (extra-- >= 0) | |
3221 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3222 | } | |
3223 | ||
be95a9c1 | 3224 | static void |
9497f5ac | 3225 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3226 | { |
3227 | symbolS *symbolP; | |
3228 | ||
3229 | if (name[0] == '.' && name[1] == '\0') | |
3230 | { | |
3231 | /* Turn '. = mumble' into a .org mumble. */ | |
3232 | segT segment; | |
3233 | expressionS exp; | |
3234 | ||
3235 | segment = get_known_segmented_expression (&exp); | |
3236 | ||
3237 | if (!need_pass_2) | |
3238 | do_org (segment, &exp, 0); | |
3239 | ||
3240 | return; | |
3241 | } | |
3242 | ||
3243 | if ((symbolP = symbol_find (name)) == NULL | |
3244 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3245 | { | |
3246 | symbolP = symbol_find_or_make (name); | |
3247 | #ifndef NO_LISTING | |
3248 | /* When doing symbol listings, play games with dummy fragments living | |
3249 | outside the normal fragment chain to record the file and line info | |
3250 | for this symbol. */ | |
3251 | if (listing & LISTING_SYMBOLS) | |
3252 | { | |
3253 | extern struct list_info_struct *listing_tail; | |
8860a416 | 3254 | fragS *dummy_frag = XCNEW (fragS); |
be95a9c1 AM |
3255 | dummy_frag->line = listing_tail; |
3256 | dummy_frag->fr_symbol = symbolP; | |
3257 | symbol_set_frag (symbolP, dummy_frag); | |
3258 | } | |
3259 | #endif | |
76bd66cf | 3260 | #if defined (OBJ_COFF) && !defined (TE_PE) |
31d20a21 AM |
3261 | /* "set" symbols are local unless otherwise specified. */ |
3262 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3263 | #endif |
3264 | } | |
3265 | ||
6a2b6326 | 3266 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac | 3267 | { |
9497f5ac | 3268 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) |
6885131b | 3269 | && !S_CAN_BE_REDEFINED (symbolP)) |
9497f5ac NC |
3270 | { |
3271 | as_bad (_("symbol `%s' is already defined"), name); | |
62bd6b5f AM |
3272 | ignore_rest_of_line (); |
3273 | input_line_pointer--; | |
3274 | return; | |
9497f5ac NC |
3275 | } |
3276 | /* If the symbol is volatile, copy the symbol and replace the | |
3277 | original with the copy, so that previous uses of the symbol will | |
3278 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3279 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3280 | symbolP = symbol_clone (symbolP, 1); |
3281 | } | |
3282 | ||
3283 | if (mode == 0) | |
3284 | S_SET_VOLATILE (symbolP); | |
3285 | else if (mode < 0) | |
3286 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3287 | |
3288 | pseudo_set (symbolP); | |
be95a9c1 AM |
3289 | } |
3290 | ||
9497f5ac NC |
3291 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3292 | then this is .equiv, and it is an error if the symbol is already | |
3293 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3294 | reference. */ | |
252b5132 | 3295 | |
041ff4dd | 3296 | void |
39e6acbd | 3297 | s_set (int equiv) |
252b5132 | 3298 | { |
be95a9c1 | 3299 | char *name; |
252b5132 | 3300 | |
041ff4dd NC |
3301 | /* Especial apologies for the random logic: |
3302 | this just grew, and could be parsed much more simply! | |
3303 | Dean in haste. */ | |
7bfd842d NC |
3304 | if ((name = read_symbol_name ()) == NULL) |
3305 | return; | |
252b5132 RH |
3306 | |
3307 | if (*input_line_pointer != ',') | |
3308 | { | |
0e389e77 | 3309 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 | 3310 | ignore_rest_of_line (); |
7bfd842d | 3311 | free (name); |
252b5132 RH |
3312 | return; |
3313 | } | |
3314 | ||
3315 | input_line_pointer++; | |
be95a9c1 | 3316 | assign_symbol (name, equiv); |
31d20a21 | 3317 | demand_empty_rest_of_line (); |
7bfd842d | 3318 | free (name); |
041ff4dd | 3319 | } |
252b5132 | 3320 | |
041ff4dd | 3321 | void |
39e6acbd | 3322 | s_space (int mult) |
252b5132 RH |
3323 | { |
3324 | expressionS exp; | |
3325 | expressionS val; | |
3326 | char *p = 0; | |
3327 | char *stop = NULL; | |
fb25138b | 3328 | char stopc = 0; |
252b5132 RH |
3329 | int bytes; |
3330 | ||
3331 | #ifdef md_flush_pending_output | |
3332 | md_flush_pending_output (); | |
3333 | #endif | |
3334 | ||
cc3f603a JM |
3335 | #ifdef md_cons_align |
3336 | md_cons_align (1); | |
3337 | #endif | |
3338 | ||
252b5132 RH |
3339 | if (flag_mri) |
3340 | stop = mri_comment_field (&stopc); | |
3341 | ||
3342 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3343 | this is ds.b. */ | |
3344 | if (flag_m68k_mri && mult > 1) | |
3345 | { | |
3346 | if (now_seg == absolute_section) | |
3347 | { | |
3348 | abs_section_offset += abs_section_offset & 1; | |
3349 | if (line_label != NULL) | |
3350 | S_SET_VALUE (line_label, abs_section_offset); | |
3351 | } | |
3352 | else if (mri_common_symbol != NULL) | |
3353 | { | |
91d6fa6a | 3354 | valueT mri_val; |
252b5132 | 3355 | |
91d6fa6a NC |
3356 | mri_val = S_GET_VALUE (mri_common_symbol); |
3357 | if ((mri_val & 1) != 0) | |
252b5132 | 3358 | { |
91d6fa6a | 3359 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3360 | if (line_label != NULL) |
3361 | { | |
2b47531b ILT |
3362 | expressionS *symexp; |
3363 | ||
3364 | symexp = symbol_get_value_expression (line_label); | |
3365 | know (symexp->X_op == O_symbol); | |
3366 | know (symexp->X_add_symbol == mri_common_symbol); | |
3367 | symexp->X_add_number += 1; | |
252b5132 RH |
3368 | } |
3369 | } | |
3370 | } | |
3371 | else | |
3372 | { | |
3373 | do_align (1, (char *) NULL, 0, 0); | |
3374 | if (line_label != NULL) | |
3375 | { | |
2b47531b | 3376 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3377 | S_SET_VALUE (line_label, frag_now_fix ()); |
3378 | } | |
3379 | } | |
3380 | } | |
3381 | ||
3382 | bytes = mult; | |
3383 | ||
3384 | expression (&exp); | |
3385 | ||
3386 | SKIP_WHITESPACE (); | |
3387 | if (*input_line_pointer == ',') | |
3388 | { | |
3389 | ++input_line_pointer; | |
3390 | expression (&val); | |
3391 | } | |
3392 | else | |
3393 | { | |
3394 | val.X_op = O_constant; | |
3395 | val.X_add_number = 0; | |
3396 | } | |
3397 | ||
ec9ab52c JB |
3398 | if ((val.X_op != O_constant |
3399 | || val.X_add_number < - 0x80 | |
3400 | || val.X_add_number > 0xff | |
3401 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3402 | && (now_seg != absolute_section && !in_bss ())) | |
252b5132 | 3403 | { |
9497f5ac | 3404 | resolve_expression (&exp); |
252b5132 | 3405 | if (exp.X_op != O_constant) |
0e389e77 | 3406 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3407 | else |
3408 | { | |
3409 | offsetT i; | |
3410 | ||
005304aa NC |
3411 | /* PR 20901: Check for excessive values. |
3412 | FIXME: 1<<10 is an arbitrary limit. Maybe use maxpagesize instead ? */ | |
3413 | if (exp.X_add_number < 0 || exp.X_add_number > (1 << 10)) | |
5eecd862 | 3414 | as_bad (_("size value for space directive too large: %lx"), |
005304aa NC |
3415 | (long) exp.X_add_number); |
3416 | else | |
3417 | { | |
3418 | if (mult == 0) | |
3419 | mult = 1; | |
3420 | bytes = mult * exp.X_add_number; | |
3421 | ||
3422 | for (i = 0; i < exp.X_add_number; i++) | |
3423 | emit_expr (&val, mult); | |
3424 | } | |
252b5132 RH |
3425 | } |
3426 | } | |
3427 | else | |
3428 | { | |
9497f5ac NC |
3429 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3430 | resolve_expression (&exp); | |
3431 | ||
252b5132 RH |
3432 | if (exp.X_op == O_constant) |
3433 | { | |
a4a151e6 | 3434 | offsetT repeat; |
252b5132 RH |
3435 | |
3436 | repeat = exp.X_add_number; | |
3437 | if (mult) | |
3438 | repeat *= mult; | |
3439 | bytes = repeat; | |
3440 | if (repeat <= 0) | |
3441 | { | |
2d150871 RO |
3442 | if (!flag_mri) |
3443 | as_warn (_(".space repeat count is zero, ignored")); | |
3444 | else if (repeat < 0) | |
252b5132 RH |
3445 | as_warn (_(".space repeat count is negative, ignored")); |
3446 | goto getout; | |
3447 | } | |
3448 | ||
3449 | /* If we are in the absolute section, just bump the offset. */ | |
3450 | if (now_seg == absolute_section) | |
3451 | { | |
ec9ab52c JB |
3452 | if (val.X_op != O_constant || val.X_add_number != 0) |
3453 | as_warn (_("ignoring fill value in absolute section")); | |
252b5132 RH |
3454 | abs_section_offset += repeat; |
3455 | goto getout; | |
3456 | } | |
3457 | ||
3458 | /* If we are secretly in an MRI common section, then | |
3459 | creating space just increases the size of the common | |
3460 | symbol. */ | |
3461 | if (mri_common_symbol != NULL) | |
3462 | { | |
3463 | S_SET_VALUE (mri_common_symbol, | |
3464 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3465 | goto getout; | |
3466 | } | |
3467 | ||
3468 | if (!need_pass_2) | |
3469 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3470 | (offsetT) repeat, (char *) 0); | |
3471 | } | |
3472 | else | |
3473 | { | |
3474 | if (now_seg == absolute_section) | |
3475 | { | |
3476 | as_bad (_("space allocation too complex in absolute section")); | |
3477 | subseg_set (text_section, 0); | |
3478 | } | |
f0e652b4 | 3479 | |
252b5132 RH |
3480 | if (mri_common_symbol != NULL) |
3481 | { | |
3482 | as_bad (_("space allocation too complex in common section")); | |
3483 | mri_common_symbol = NULL; | |
3484 | } | |
f0e652b4 | 3485 | |
252b5132 RH |
3486 | if (!need_pass_2) |
3487 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3488 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3489 | } | |
3490 | ||
ec9ab52c JB |
3491 | if ((val.X_op != O_constant || val.X_add_number != 0) && in_bss ()) |
3492 | as_warn (_("ignoring fill value in section `%s'"), | |
3493 | segment_name (now_seg)); | |
3494 | else if (p) | |
252b5132 RH |
3495 | *p = val.X_add_number; |
3496 | } | |
3497 | ||
3498 | getout: | |
3499 | ||
3500 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3501 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3502 | or dcb.b. */ | |
3503 | if (flag_mri && (bytes & 1) != 0) | |
3504 | mri_pending_align = 1; | |
3505 | ||
3506 | demand_empty_rest_of_line (); | |
3507 | ||
3508 | if (flag_mri) | |
3509 | mri_comment_end (stop, stopc); | |
3510 | } | |
3511 | ||
62a02d25 | 3512 | void |
8f065d3b | 3513 | s_nops (int ignore ATTRIBUTE_UNUSED) |
62a02d25 L |
3514 | { |
3515 | expressionS exp; | |
3516 | expressionS val; | |
3517 | ||
3518 | #ifdef md_flush_pending_output | |
3519 | md_flush_pending_output (); | |
3520 | #endif | |
3521 | ||
3522 | #ifdef md_cons_align | |
3523 | md_cons_align (1); | |
3524 | #endif | |
3525 | ||
3526 | expression (&exp); | |
3527 | ||
3528 | if (*input_line_pointer == ',') | |
3529 | { | |
3530 | ++input_line_pointer; | |
3531 | expression (&val); | |
3532 | } | |
3533 | else | |
3534 | { | |
3535 | val.X_op = O_constant; | |
3536 | val.X_add_number = 0; | |
3537 | } | |
3538 | ||
3539 | if (val.X_op == O_constant) | |
3540 | { | |
3541 | if (val.X_add_number < 0) | |
3542 | { | |
3543 | as_warn (_("negative nop control byte, ignored")); | |
3544 | val.X_add_number = 0; | |
3545 | } | |
3546 | ||
3547 | if (!need_pass_2) | |
3548 | { | |
3549 | /* Store the no-op instruction control byte in the first byte | |
3550 | of frag. */ | |
3551 | char *p; | |
3552 | symbolS *sym = make_expr_symbol (&exp); | |
3553 | p = frag_var (rs_space_nop, 1, 1, (relax_substateT) 0, | |
3554 | sym, (offsetT) 0, (char *) 0); | |
3555 | *p = val.X_add_number; | |
3556 | } | |
3557 | } | |
3558 | else | |
8f065d3b | 3559 | as_bad (_("unsupported variable nop control in .nops directive")); |
62a02d25 L |
3560 | |
3561 | demand_empty_rest_of_line (); | |
3562 | } | |
3563 | ||
252b5132 RH |
3564 | /* This is like s_space, but the value is a floating point number with |
3565 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3566 | friends. */ | |
3567 | ||
3568 | void | |
39e6acbd | 3569 | s_float_space (int float_type) |
252b5132 RH |
3570 | { |
3571 | offsetT count; | |
3572 | int flen; | |
3573 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3574 | char *stop = NULL; | |
fb25138b | 3575 | char stopc = 0; |
252b5132 | 3576 | |
cc3f603a JM |
3577 | #ifdef md_cons_align |
3578 | md_cons_align (1); | |
3579 | #endif | |
3580 | ||
252b5132 RH |
3581 | if (flag_mri) |
3582 | stop = mri_comment_field (&stopc); | |
3583 | ||
3584 | count = get_absolute_expression (); | |
3585 | ||
3586 | SKIP_WHITESPACE (); | |
3587 | if (*input_line_pointer != ',') | |
3588 | { | |
3589 | as_bad (_("missing value")); | |
3590 | ignore_rest_of_line (); | |
3591 | if (flag_mri) | |
3592 | mri_comment_end (stop, stopc); | |
3593 | return; | |
3594 | } | |
3595 | ||
3596 | ++input_line_pointer; | |
3597 | ||
3598 | SKIP_WHITESPACE (); | |
3599 | ||
3600 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3601 | * letter is legal. */ | |
3602 | if (input_line_pointer[0] == '0' | |
3882b010 | 3603 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3604 | input_line_pointer += 2; |
3605 | ||
3606 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3607 | with the exact digits specified. */ | |
3608 | if (input_line_pointer[0] == ':') | |
3609 | { | |
3610 | flen = hex_float (float_type, temp); | |
3611 | if (flen < 0) | |
3612 | { | |
3613 | ignore_rest_of_line (); | |
3614 | if (flag_mri) | |
3615 | mri_comment_end (stop, stopc); | |
3616 | return; | |
3617 | } | |
3618 | } | |
3619 | else | |
3620 | { | |
6d4af3c2 | 3621 | const char *err; |
252b5132 RH |
3622 | |
3623 | err = md_atof (float_type, temp, &flen); | |
3624 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3625 | know (err != NULL || flen > 0); |
252b5132 RH |
3626 | if (err) |
3627 | { | |
0e389e77 | 3628 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3629 | ignore_rest_of_line (); |
3630 | if (flag_mri) | |
3631 | mri_comment_end (stop, stopc); | |
3632 | return; | |
3633 | } | |
3634 | } | |
3635 | ||
3636 | while (--count >= 0) | |
3637 | { | |
3638 | char *p; | |
3639 | ||
3640 | p = frag_more (flen); | |
3641 | memcpy (p, temp, (unsigned int) flen); | |
3642 | } | |
3643 | ||
3644 | demand_empty_rest_of_line (); | |
3645 | ||
3646 | if (flag_mri) | |
3647 | mri_comment_end (stop, stopc); | |
3648 | } | |
3649 | ||
3650 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3651 | ||
3652 | void | |
39e6acbd | 3653 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3654 | { |
3655 | char *stop = NULL; | |
fb25138b | 3656 | char stopc = 0; |
252b5132 RH |
3657 | |
3658 | if (flag_mri) | |
3659 | stop = mri_comment_field (&stopc); | |
3660 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3661 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3662 | /* The ELF backend needs to know that we are changing sections, so | |
3663 | that .previous works correctly. */ | |
f43abd2b | 3664 | if (IS_ELF) |
a2902af6 TS |
3665 | obj_elf_section_change_hook (); |
3666 | #endif | |
252b5132 RH |
3667 | subseg_set (absolute_section, 0); |
3668 | demand_empty_rest_of_line (); | |
3669 | if (flag_mri) | |
3670 | mri_comment_end (stop, stopc); | |
3671 | } | |
3672 | ||
3673 | void | |
39e6acbd | 3674 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3675 | { |
3d540e93 | 3676 | int temp; |
252b5132 RH |
3677 | |
3678 | temp = get_absolute_expression (); | |
3679 | subseg_set (text_section, (subsegT) temp); | |
3680 | demand_empty_rest_of_line (); | |
041ff4dd | 3681 | } |
06e77878 AO |
3682 | |
3683 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3684 | referenced directly, will cause y to become a weak symbol. */ | |
3685 | void | |
3686 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3687 | { | |
3688 | char *name; | |
06e77878 AO |
3689 | symbolS *symbolP; |
3690 | symbolS *symbolP2; | |
3691 | expressionS exp; | |
3692 | ||
7bfd842d NC |
3693 | if ((name = read_symbol_name ()) == NULL) |
3694 | return; | |
06e77878 AO |
3695 | |
3696 | symbolP = symbol_find_or_make (name); | |
3697 | ||
b54788f8 AO |
3698 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3699 | { | |
89cdfe57 | 3700 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3701 | { |
3702 | as_bad (_("symbol `%s' is already defined"), name); | |
7bfd842d | 3703 | goto err_out; |
92757bc9 | 3704 | } |
89cdfe57 | 3705 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3706 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3707 | } |
3708 | ||
06e77878 AO |
3709 | SKIP_WHITESPACE (); |
3710 | ||
3711 | if (*input_line_pointer != ',') | |
3712 | { | |
06e77878 | 3713 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 3714 | goto err_out; |
06e77878 AO |
3715 | } |
3716 | ||
3717 | input_line_pointer++; | |
3718 | ||
3719 | SKIP_WHITESPACE (); | |
7bfd842d | 3720 | free (name); |
06e77878 | 3721 | |
7bfd842d NC |
3722 | if ((name = read_symbol_name ()) == NULL) |
3723 | return; | |
06e77878 AO |
3724 | |
3725 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3726 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3727 | { | |
3728 | symbolP2 = symbol_find_or_make (name); | |
3729 | S_SET_WEAKREFD (symbolP2); | |
3730 | } | |
3731 | else | |
3732 | { | |
3733 | symbolS *symp = symbolP2; | |
3734 | ||
3735 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3736 | { | |
3737 | expressionS *expP = symbol_get_value_expression (symp); | |
3738 | ||
9c2799c2 | 3739 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3740 | && expP->X_add_number == 0); |
3741 | symp = expP->X_add_symbol; | |
3742 | } | |
3743 | if (symp == symbolP) | |
3744 | { | |
3745 | char *loop; | |
3746 | ||
3747 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3748 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3749 | |
3750 | symp = symbolP2; | |
3751 | while (symp != symbolP) | |
3752 | { | |
3753 | char *old_loop = loop; | |
7bfd842d | 3754 | |
06e77878 | 3755 | symp = symbol_get_value_expression (symp)->X_add_symbol; |
1bf57e9f AM |
3756 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3757 | (const char *) NULL); | |
06e77878 AO |
3758 | free (old_loop); |
3759 | } | |
3760 | ||
3761 | as_bad (_("%s: would close weakref loop: %s"), | |
3762 | S_GET_NAME (symbolP), loop); | |
3763 | ||
3764 | free (loop); | |
7bfd842d | 3765 | free (name); |
06e77878 AO |
3766 | ignore_rest_of_line (); |
3767 | return; | |
3768 | } | |
3769 | ||
3770 | /* Short-circuiting instead of just checking here might speed | |
3771 | things up a tiny little bit, but loop error messages would | |
3772 | miss intermediate links. */ | |
3773 | /* symbolP2 = symp; */ | |
3774 | } | |
3775 | ||
06e77878 AO |
3776 | memset (&exp, 0, sizeof (exp)); |
3777 | exp.X_op = O_symbol; | |
3778 | exp.X_add_symbol = symbolP2; | |
3779 | ||
3780 | S_SET_SEGMENT (symbolP, undefined_section); | |
3781 | symbol_set_value_expression (symbolP, &exp); | |
3782 | symbol_set_frag (symbolP, &zero_address_frag); | |
3783 | S_SET_WEAKREFR (symbolP); | |
3784 | ||
3785 | demand_empty_rest_of_line (); | |
7bfd842d NC |
3786 | free (name); |
3787 | return; | |
3788 | ||
3789 | err_out: | |
3790 | ignore_rest_of_line (); | |
3791 | free (name); | |
3792 | return; | |
06e77878 | 3793 | } |
252b5132 | 3794 | \f |
c95b35a9 NS |
3795 | |
3796 | /* Verify that we are at the end of a line. If not, issue an error and | |
3797 | skip to EOL. */ | |
3798 | ||
041ff4dd | 3799 | void |
39e6acbd | 3800 | demand_empty_rest_of_line (void) |
252b5132 RH |
3801 | { |
3802 | SKIP_WHITESPACE (); | |
3803 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3804 | input_line_pointer++; |
252b5132 | 3805 | else |
252b5132 | 3806 | { |
3882b010 | 3807 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3808 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3809 | *input_line_pointer); |
252b5132 | 3810 | else |
c95b35a9 | 3811 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3812 | *input_line_pointer); |
c95b35a9 | 3813 | ignore_rest_of_line (); |
252b5132 | 3814 | } |
fa94de6b | 3815 | |
c95b35a9 NS |
3816 | /* Return pointing just after end-of-line. */ |
3817 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3818 | } | |
3819 | ||
3820 | /* Silently advance to the end of line. Use this after already having | |
3821 | issued an error about something bad. */ | |
3822 | ||
3823 | void | |
3824 | ignore_rest_of_line (void) | |
3825 | { | |
3826 | while (input_line_pointer < buffer_limit | |
3827 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3828 | input_line_pointer++; | |
f0e652b4 | 3829 | |
041ff4dd NC |
3830 | input_line_pointer++; |
3831 | ||
3832 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3833 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3834 | } | |
3835 | ||
be95a9c1 AM |
3836 | /* Sets frag for given symbol to zero_address_frag, except when the |
3837 | symbol frag is already set to a dummy listing frag. */ | |
3838 | ||
3839 | static void | |
3840 | set_zero_frag (symbolS *symbolP) | |
3841 | { | |
3842 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3843 | symbol_set_frag (symbolP, &zero_address_frag); | |
3844 | } | |
3845 | ||
041ff4dd | 3846 | /* In: Pointer to a symbol. |
d6415f6c | 3847 | Input_line_pointer->expression. |
f0e652b4 | 3848 | |
041ff4dd | 3849 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3850 | Tried to set symbol to value of expression. |
3851 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3852 | |
252b5132 | 3853 | void |
39e6acbd | 3854 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3855 | { |
3856 | expressionS exp; | |
be95a9c1 | 3857 | segT seg; |
252b5132 | 3858 | |
041ff4dd | 3859 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3860 | |
9497f5ac NC |
3861 | if (!S_IS_FORWARD_REF (symbolP)) |
3862 | (void) expression (&exp); | |
3863 | else | |
3864 | (void) deferred_expression (&exp); | |
252b5132 RH |
3865 | |
3866 | if (exp.X_op == O_illegal) | |
0e389e77 | 3867 | as_bad (_("illegal expression")); |
252b5132 | 3868 | else if (exp.X_op == O_absent) |
0e389e77 | 3869 | as_bad (_("missing expression")); |
252b5132 RH |
3870 | else if (exp.X_op == O_big) |
3871 | { | |
3872 | if (exp.X_add_number > 0) | |
0e389e77 | 3873 | as_bad (_("bignum invalid")); |
252b5132 | 3874 | else |
0e389e77 | 3875 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3876 | } |
3877 | else if (exp.X_op == O_subtract | |
9497f5ac | 3878 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3879 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3880 | && (symbol_get_frag (exp.X_add_symbol) |
3881 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3882 | { |
3883 | exp.X_op = O_constant; | |
3884 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3885 | - S_GET_VALUE (exp.X_op_symbol)); | |
3886 | } | |
3887 | ||
be95a9c1 AM |
3888 | if (symbol_section_p (symbolP)) |
3889 | { | |
3890 | as_bad ("attempt to set value of section symbol"); | |
3891 | return; | |
3892 | } | |
be95a9c1 | 3893 | |
252b5132 RH |
3894 | switch (exp.X_op) |
3895 | { | |
3896 | case O_illegal: | |
3897 | case O_absent: | |
3898 | case O_big: | |
3899 | exp.X_add_number = 0; | |
3900 | /* Fall through. */ | |
3901 | case O_constant: | |
3902 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3903 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3904 | set_zero_frag (symbolP); |
252b5132 RH |
3905 | break; |
3906 | ||
3907 | case O_register: | |
97c4f2d9 | 3908 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3909 | if (S_IS_EXTERNAL (symbolP)) |
3910 | { | |
3911 | as_bad ("can't equate global symbol `%s' with register name", | |
3912 | S_GET_NAME (symbolP)); | |
3913 | return; | |
3914 | } | |
97c4f2d9 | 3915 | #endif |
252b5132 RH |
3916 | S_SET_SEGMENT (symbolP, reg_section); |
3917 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3918 | set_zero_frag (symbolP); |
db557034 | 3919 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3920 | break; |
3921 | ||
3922 | case O_symbol: | |
be95a9c1 AM |
3923 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3924 | /* For x=undef+const, create an expression symbol. | |
3925 | For x=x+const, just update x except when x is an undefined symbol | |
3926 | For x=defined+const, evaluate x. */ | |
3927 | if (symbolP == exp.X_add_symbol | |
3928 | && (seg != undefined_section | |
3929 | || !symbol_constant_p (symbolP))) | |
3930 | { | |
3931 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3932 | break; | |
3933 | } | |
9497f5ac | 3934 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3935 | { |
3936 | symbolS *s = exp.X_add_symbol; | |
3937 | ||
60938e80 | 3938 | if (S_IS_COMMON (s)) |
76db0a2e | 3939 | as_bad (_("`%s' can't be equated to common symbol `%s'"), |
60938e80 L |
3940 | S_GET_NAME (symbolP), S_GET_NAME (s)); |
3941 | ||
be95a9c1 AM |
3942 | S_SET_SEGMENT (symbolP, seg); |
3943 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3944 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3945 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3946 | break; |
252b5132 | 3947 | } |
66bd02d3 AM |
3948 | S_SET_SEGMENT (symbolP, undefined_section); |
3949 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 3950 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
3951 | set_zero_frag (symbolP); |
3952 | break; | |
252b5132 RH |
3953 | |
3954 | default: | |
aba4aa7d AM |
3955 | /* The value is some complex expression. */ |
3956 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3957 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3958 | set_zero_frag (symbolP); |
252b5132 RH |
3959 | break; |
3960 | } | |
3961 | } | |
3962 | \f | |
d6415f6c | 3963 | /* cons() |
f0e652b4 | 3964 | |
041ff4dd NC |
3965 | CONStruct more frag of .bytes, or .words etc. |
3966 | Should need_pass_2 be 1 then emit no frag(s). | |
3967 | This understands EXPRESSIONS. | |
f0e652b4 | 3968 | |
041ff4dd | 3969 | Bug (?) |
f0e652b4 | 3970 | |
041ff4dd NC |
3971 | This has a split personality. We use expression() to read the |
3972 | value. We can detect if the value won't fit in a byte or word. | |
3973 | But we can't detect if expression() discarded significant digits | |
3974 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3975 | |
3976 | /* Select a parser for cons expressions. */ | |
3977 | ||
3978 | /* Some targets need to parse the expression in various fancy ways. | |
3979 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3980 | (for example, the HPPA does this). Otherwise, you can define | |
3981 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3982 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3983 | are defined, which is the normal case, then only simple expressions | |
3984 | are permitted. */ | |
3985 | ||
abd63a32 | 3986 | #ifdef TC_M68K |
252b5132 | 3987 | static void |
39e6acbd | 3988 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3989 | #endif |
252b5132 RH |
3990 | |
3991 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3992 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
62ebcb5c AM |
3993 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3994 | (parse_bitfield_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
041ff4dd | 3995 | static void |
39e6acbd | 3996 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3997 | #endif |
3998 | #ifdef REPEAT_CONS_EXPRESSIONS | |
62ebcb5c AM |
3999 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
4000 | (parse_repeat_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 | 4001 | static void |
39e6acbd | 4002 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
4003 | #endif |
4004 | ||
4005 | /* If we haven't gotten one yet, just call expression. */ | |
4006 | #ifndef TC_PARSE_CONS_EXPRESSION | |
62ebcb5c AM |
4007 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
4008 | (expression (EXP), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 RH |
4009 | #endif |
4010 | #endif | |
4011 | ||
cdfbf930 | 4012 | void |
b41b1f95 L |
4013 | do_parse_cons_expression (expressionS *exp, |
4014 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 | 4015 | { |
62ebcb5c | 4016 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
cdfbf930 RH |
4017 | } |
4018 | ||
4019 | ||
041ff4dd NC |
4020 | /* Worker to do .byte etc statements. |
4021 | Clobbers input_line_pointer and checks end-of-line. */ | |
4022 | ||
4023 | static void | |
3d540e93 | 4024 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 4025 | int rva) |
252b5132 RH |
4026 | { |
4027 | int c; | |
4028 | expressionS exp; | |
4029 | char *stop = NULL; | |
fb25138b | 4030 | char stopc = 0; |
252b5132 RH |
4031 | |
4032 | #ifdef md_flush_pending_output | |
4033 | md_flush_pending_output (); | |
4034 | #endif | |
4035 | ||
4036 | if (flag_mri) | |
4037 | stop = mri_comment_field (&stopc); | |
4038 | ||
4039 | if (is_it_end_of_statement ()) | |
4040 | { | |
4041 | demand_empty_rest_of_line (); | |
4042 | if (flag_mri) | |
4043 | mri_comment_end (stop, stopc); | |
4044 | return; | |
4045 | } | |
4046 | ||
cc1bc22a AM |
4047 | #ifdef TC_ADDRESS_BYTES |
4048 | if (nbytes == 0) | |
4049 | nbytes = TC_ADDRESS_BYTES (); | |
4050 | #endif | |
4051 | ||
252b5132 RH |
4052 | #ifdef md_cons_align |
4053 | md_cons_align (nbytes); | |
4054 | #endif | |
4055 | ||
4056 | c = 0; | |
4057 | do | |
4058 | { | |
62ebcb5c | 4059 | TC_PARSE_CONS_RETURN_TYPE ret = TC_PARSE_CONS_RETURN_NONE; |
bf7279d5 AM |
4060 | #ifdef TC_CONS_FIX_CHECK |
4061 | fixS **cur_fix = &frchain_now->fix_tail; | |
4062 | ||
4063 | if (*cur_fix != NULL) | |
4064 | cur_fix = &(*cur_fix)->fx_next; | |
4065 | #endif | |
62ebcb5c | 4066 | |
abd63a32 | 4067 | #ifdef TC_M68K |
252b5132 RH |
4068 | if (flag_m68k_mri) |
4069 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
4070 | else | |
abd63a32 | 4071 | #endif |
fa94de6b | 4072 | { |
d02603dc | 4073 | #if 0 |
847d4311 NS |
4074 | if (*input_line_pointer == '"') |
4075 | { | |
4076 | as_bad (_("unexpected `\"' in expression")); | |
4077 | ignore_rest_of_line (); | |
4078 | return; | |
4079 | } | |
d02603dc | 4080 | #endif |
62ebcb5c | 4081 | ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
847d4311 | 4082 | } |
252b5132 RH |
4083 | |
4084 | if (rva) | |
4085 | { | |
4086 | if (exp.X_op == O_symbol) | |
4087 | exp.X_op = O_symbol_rva; | |
4088 | else | |
4089 | as_fatal (_("rva without symbol")); | |
4090 | } | |
62ebcb5c | 4091 | emit_expr_with_reloc (&exp, (unsigned int) nbytes, ret); |
bf7279d5 AM |
4092 | #ifdef TC_CONS_FIX_CHECK |
4093 | TC_CONS_FIX_CHECK (&exp, nbytes, *cur_fix); | |
4094 | #endif | |
252b5132 RH |
4095 | ++c; |
4096 | } | |
4097 | while (*input_line_pointer++ == ','); | |
4098 | ||
4099 | /* In MRI mode, after an odd number of bytes, we must align to an | |
4100 | even word boundary, unless the next instruction is a dc.b, ds.b | |
4101 | or dcb.b. */ | |
4102 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
4103 | mri_pending_align = 1; | |
4104 | ||
041ff4dd | 4105 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
4106 | |
4107 | demand_empty_rest_of_line (); | |
4108 | ||
4109 | if (flag_mri) | |
4110 | mri_comment_end (stop, stopc); | |
4111 | } | |
4112 | ||
252b5132 | 4113 | void |
39e6acbd | 4114 | cons (int size) |
252b5132 RH |
4115 | { |
4116 | cons_worker (size, 0); | |
4117 | } | |
4118 | ||
041ff4dd | 4119 | void |
39e6acbd | 4120 | s_rva (int size) |
252b5132 RH |
4121 | { |
4122 | cons_worker (size, 1); | |
4123 | } | |
4124 | ||
05e9452c AM |
4125 | /* .reloc offset, reloc_name, symbol+addend. */ |
4126 | ||
b38ead21 | 4127 | static void |
05e9452c AM |
4128 | s_reloc (int ignore ATTRIBUTE_UNUSED) |
4129 | { | |
4130 | char *stop = NULL; | |
4131 | char stopc = 0; | |
4132 | expressionS exp; | |
4133 | char *r_name; | |
4134 | int c; | |
4135 | struct reloc_list *reloc; | |
cd0bbe6e TS |
4136 | struct _bfd_rel { const char * name; bfd_reloc_code_real_type code; }; |
4137 | static struct _bfd_rel bfd_relocs[] = | |
4138 | { | |
740bdc67 | 4139 | { "NONE", BFD_RELOC_NONE }, |
cd0bbe6e | 4140 | { "8", BFD_RELOC_8 }, |
740bdc67 AM |
4141 | { "16", BFD_RELOC_16 }, |
4142 | { "32", BFD_RELOC_32 }, | |
4143 | { "64", BFD_RELOC_64 } | |
4144 | }; | |
05e9452c | 4145 | |
8860a416 | 4146 | reloc = XNEW (struct reloc_list); |
05e9452c AM |
4147 | |
4148 | if (flag_mri) | |
4149 | stop = mri_comment_field (&stopc); | |
4150 | ||
4151 | expression (&exp); | |
4152 | switch (exp.X_op) | |
4153 | { | |
4154 | case O_illegal: | |
4155 | case O_absent: | |
4156 | case O_big: | |
4157 | case O_register: | |
4158 | as_bad (_("missing or bad offset expression")); | |
4159 | goto err_out; | |
4160 | case O_constant: | |
4161 | exp.X_add_symbol = section_symbol (now_seg); | |
4162 | exp.X_op = O_symbol; | |
2b0f3761 | 4163 | /* Fallthru */ |
05e9452c AM |
4164 | case O_symbol: |
4165 | if (exp.X_add_number == 0) | |
4166 | { | |
4167 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
4168 | break; | |
4169 | } | |
2b0f3761 | 4170 | /* Fallthru */ |
05e9452c AM |
4171 | default: |
4172 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
4173 | break; | |
4174 | } | |
4175 | ||
4176 | SKIP_WHITESPACE (); | |
4177 | if (*input_line_pointer != ',') | |
4178 | { | |
4179 | as_bad (_("missing reloc type")); | |
4180 | goto err_out; | |
4181 | } | |
4182 | ||
4183 | ++input_line_pointer; | |
4184 | SKIP_WHITESPACE (); | |
d02603dc | 4185 | c = get_symbol_name (& r_name); |
740bdc67 AM |
4186 | if (strncasecmp (r_name, "BFD_RELOC_", 10) == 0) |
4187 | { | |
4188 | unsigned int i; | |
4189 | ||
4190 | for (reloc->u.a.howto = NULL, i = 0; i < ARRAY_SIZE (bfd_relocs); i++) | |
4191 | if (strcasecmp (r_name + 10, bfd_relocs[i].name) == 0) | |
4192 | { | |
4193 | reloc->u.a.howto = bfd_reloc_type_lookup (stdoutput, | |
4194 | bfd_relocs[i].code); | |
4195 | break; | |
4196 | } | |
4197 | } | |
4198 | else | |
4199 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
05e9452c AM |
4200 | *input_line_pointer = c; |
4201 | if (reloc->u.a.howto == NULL) | |
4202 | { | |
4203 | as_bad (_("unrecognized reloc type")); | |
4204 | goto err_out; | |
4205 | } | |
4206 | ||
4207 | exp.X_op = O_absent; | |
d02603dc | 4208 | SKIP_WHITESPACE_AFTER_NAME (); |
05e9452c AM |
4209 | if (*input_line_pointer == ',') |
4210 | { | |
4211 | ++input_line_pointer; | |
c188d0bb | 4212 | expression (&exp); |
05e9452c AM |
4213 | } |
4214 | switch (exp.X_op) | |
4215 | { | |
4216 | case O_illegal: | |
4217 | case O_big: | |
4218 | case O_register: | |
4219 | as_bad (_("bad reloc expression")); | |
4220 | err_out: | |
4221 | ignore_rest_of_line (); | |
4222 | free (reloc); | |
4223 | if (flag_mri) | |
4224 | mri_comment_end (stop, stopc); | |
4225 | return; | |
4226 | case O_absent: | |
4227 | reloc->u.a.sym = NULL; | |
4228 | reloc->u.a.addend = 0; | |
4229 | break; | |
4230 | case O_constant: | |
4231 | reloc->u.a.sym = NULL; | |
4232 | reloc->u.a.addend = exp.X_add_number; | |
4233 | break; | |
4234 | case O_symbol: | |
4235 | reloc->u.a.sym = exp.X_add_symbol; | |
4236 | reloc->u.a.addend = exp.X_add_number; | |
4237 | break; | |
4238 | default: | |
4239 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4240 | reloc->u.a.addend = 0; | |
4241 | break; | |
4242 | } | |
4243 | ||
3b4dbbbf | 4244 | reloc->file = as_where (&reloc->line); |
05e9452c AM |
4245 | reloc->next = reloc_list; |
4246 | reloc_list = reloc; | |
4247 | ||
4248 | demand_empty_rest_of_line (); | |
4249 | if (flag_mri) | |
4250 | mri_comment_end (stop, stopc); | |
4251 | } | |
4252 | ||
252b5132 RH |
4253 | /* Put the contents of expression EXP into the object file using |
4254 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4255 | ||
4256 | void | |
39e6acbd | 4257 | emit_expr (expressionS *exp, unsigned int nbytes) |
62ebcb5c AM |
4258 | { |
4259 | emit_expr_with_reloc (exp, nbytes, TC_PARSE_CONS_RETURN_NONE); | |
4260 | } | |
4261 | ||
4262 | void | |
4263 | emit_expr_with_reloc (expressionS *exp, | |
4264 | unsigned int nbytes, | |
4265 | TC_PARSE_CONS_RETURN_TYPE reloc) | |
252b5132 RH |
4266 | { |
4267 | operatorT op; | |
3d540e93 | 4268 | char *p; |
252b5132 RH |
4269 | valueT extra_digit = 0; |
4270 | ||
4271 | /* Don't do anything if we are going to make another pass. */ | |
4272 | if (need_pass_2) | |
4273 | return; | |
4274 | ||
4bc25101 | 4275 | frag_grow (nbytes); |
ed7d5d1a | 4276 | dot_value = frag_now_fix (); |
8e723a10 | 4277 | dot_frag = frag_now; |
ed7d5d1a | 4278 | |
252b5132 RH |
4279 | #ifndef NO_LISTING |
4280 | #ifdef OBJ_ELF | |
4281 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4282 | appear as a four byte positive constant in the .line section, | |
4283 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4284 | { | |
4285 | static int dwarf_line = -1; | |
4286 | ||
4287 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4288 | dwarf_line = -1; | |
4289 | else if (dwarf_line >= 0 | |
4290 | && nbytes == 2 | |
4291 | && exp->X_op == O_constant | |
4292 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4293 | listing_source_line ((unsigned int) dwarf_line); | |
4294 | else if (nbytes == 4 | |
4295 | && exp->X_op == O_constant | |
4296 | && exp->X_add_number >= 0) | |
4297 | dwarf_line = exp->X_add_number; | |
4298 | else | |
4299 | dwarf_line = -1; | |
4300 | } | |
4301 | ||
4302 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4303 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4304 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4305 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4306 | file. We look for that case here. */ | |
4307 | { | |
4308 | static int dwarf_file = 0; | |
4309 | ||
4310 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4311 | dwarf_file = 0; | |
4312 | else if (dwarf_file == 0 | |
4313 | && nbytes == 2 | |
4314 | && exp->X_op == O_constant | |
4315 | && exp->X_add_number == 0x11) | |
4316 | dwarf_file = 1; | |
4317 | else if (dwarf_file == 1 | |
4318 | && nbytes == 2 | |
4319 | && exp->X_op == O_constant | |
4320 | && exp->X_add_number == 0x12) | |
4321 | dwarf_file = 2; | |
4322 | else if (dwarf_file == 2 | |
4323 | && nbytes == 4) | |
4324 | dwarf_file = 3; | |
4325 | else if (dwarf_file == 3 | |
4326 | && nbytes == 2 | |
4327 | && exp->X_op == O_constant | |
4328 | && exp->X_add_number == 0x38) | |
4329 | dwarf_file = 4; | |
4330 | else | |
4331 | dwarf_file = 0; | |
4332 | ||
4333 | /* The variable dwarf_file_string tells stringer that the string | |
4334 | may be the name of the source file. */ | |
4335 | if (dwarf_file == 4) | |
4336 | dwarf_file_string = 1; | |
4337 | else | |
4338 | dwarf_file_string = 0; | |
4339 | } | |
4340 | #endif | |
4341 | #endif | |
4342 | ||
4343 | if (check_eh_frame (exp, &nbytes)) | |
4344 | return; | |
4345 | ||
4346 | op = exp->X_op; | |
4347 | ||
252b5132 RH |
4348 | /* Handle a negative bignum. */ |
4349 | if (op == O_uminus | |
4350 | && exp->X_add_number == 0 | |
2b47531b ILT |
4351 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4352 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4353 | { |
4354 | int i; | |
4355 | unsigned long carry; | |
4356 | ||
2b47531b | 4357 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4358 | |
4359 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4360 | carry = 1; | |
4361 | for (i = 0; i < exp->X_add_number; i++) | |
4362 | { | |
4363 | unsigned long next; | |
4364 | ||
041ff4dd | 4365 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4366 | & LITTLENUM_MASK) |
4367 | + carry); | |
4368 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4369 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4370 | } | |
4371 | ||
4372 | /* We can ignore any carry out, because it will be handled by | |
4373 | extra_digit if it is needed. */ | |
4374 | ||
4375 | extra_digit = (valueT) -1; | |
4376 | op = O_big; | |
4377 | } | |
4378 | ||
4379 | if (op == O_absent || op == O_illegal) | |
4380 | { | |
4381 | as_warn (_("zero assumed for missing expression")); | |
4382 | exp->X_add_number = 0; | |
4383 | op = O_constant; | |
4384 | } | |
4385 | else if (op == O_big && exp->X_add_number <= 0) | |
4386 | { | |
0e389e77 | 4387 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4388 | exp->X_add_number = 0; |
4389 | op = O_constant; | |
4390 | } | |
4391 | else if (op == O_register) | |
4392 | { | |
4393 | as_warn (_("register value used as expression")); | |
4394 | op = O_constant; | |
4395 | } | |
4396 | ||
ec9ab52c JB |
4397 | /* Allow `.word 0' in the absolute section. */ |
4398 | if (now_seg == absolute_section) | |
4399 | { | |
4400 | if (op != O_constant || exp->X_add_number != 0) | |
4401 | as_bad (_("attempt to store value in absolute section")); | |
4402 | abs_section_offset += nbytes; | |
4403 | return; | |
4404 | } | |
4405 | ||
4406 | /* Allow `.word 0' in BSS style sections. */ | |
4407 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
4408 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
4409 | segment_name (now_seg)); | |
4410 | ||
252b5132 RH |
4411 | p = frag_more ((int) nbytes); |
4412 | ||
62ebcb5c AM |
4413 | if (reloc != TC_PARSE_CONS_RETURN_NONE) |
4414 | { | |
4415 | emit_expr_fix (exp, nbytes, frag_now, p, reloc); | |
4416 | return; | |
4417 | } | |
4418 | ||
252b5132 RH |
4419 | #ifndef WORKING_DOT_WORD |
4420 | /* If we have the difference of two symbols in a word, save it on | |
4421 | the broken_words list. See the code in write.c. */ | |
4422 | if (op == O_subtract && nbytes == 2) | |
4423 | { | |
4424 | struct broken_word *x; | |
4425 | ||
8860a416 | 4426 | x = XNEW (struct broken_word); |
252b5132 RH |
4427 | x->next_broken_word = broken_words; |
4428 | broken_words = x; | |
4429 | x->seg = now_seg; | |
4430 | x->subseg = now_subseg; | |
4431 | x->frag = frag_now; | |
4432 | x->word_goes_here = p; | |
4433 | x->dispfrag = 0; | |
4434 | x->add = exp->X_add_symbol; | |
4435 | x->sub = exp->X_op_symbol; | |
4436 | x->addnum = exp->X_add_number; | |
4437 | x->added = 0; | |
dc59a897 | 4438 | x->use_jump = 0; |
252b5132 RH |
4439 | new_broken_words++; |
4440 | return; | |
4441 | } | |
4442 | #endif | |
4443 | ||
4444 | /* If we have an integer, but the number of bytes is too large to | |
4445 | pass to md_number_to_chars, handle it as a bignum. */ | |
4446 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4447 | { | |
e5604d79 | 4448 | extra_digit = exp->X_unsigned ? 0 : -1; |
956a6ba3 | 4449 | convert_to_bignum (exp, !exp->X_unsigned); |
e5604d79 | 4450 | op = O_big; |
252b5132 RH |
4451 | } |
4452 | ||
4453 | if (op == O_constant) | |
4454 | { | |
3d540e93 NC |
4455 | valueT get; |
4456 | valueT use; | |
4457 | valueT mask; | |
252b5132 | 4458 | valueT hibit; |
3d540e93 | 4459 | valueT unmask; |
252b5132 RH |
4460 | |
4461 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4462 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4463 | if (nbytes >= sizeof (valueT)) |
4464 | { | |
4465 | mask = 0; | |
4466 | if (nbytes > sizeof (valueT)) | |
4467 | hibit = 0; | |
4468 | else | |
4469 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4470 | } | |
4471 | else | |
4472 | { | |
041ff4dd | 4473 | /* Don't store these bits. */ |
252b5132 RH |
4474 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4475 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4476 | } | |
4477 | ||
041ff4dd | 4478 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4479 | |
4480 | #ifdef NEVER | |
4481 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4482 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4483 | #endif |
4484 | ||
4485 | get = exp->X_add_number; | |
4486 | use = get & unmask; | |
4487 | if ((get & mask) != 0 | |
4488 | && ((get & mask) != mask | |
4489 | || (get & hibit) == 0)) | |
5f2b6bc9 NC |
4490 | { |
4491 | /* Leading bits contain both 0s & 1s. */ | |
b6ac5419 | 4492 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4493 | #ifndef __MSVCRT__ |
5c612369 NC |
4494 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4495 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4496 | #else |
4497 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4498 | (unsigned long long) get, (unsigned long long) use); | |
4499 | #endif | |
b6ac5419 AM |
4500 | #else |
4501 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4502 | (unsigned long) get, (unsigned long) use); | |
4503 | #endif | |
252b5132 | 4504 | } |
041ff4dd | 4505 | /* Put bytes in right order. */ |
252b5132 RH |
4506 | md_number_to_chars (p, use, (int) nbytes); |
4507 | } | |
4508 | else if (op == O_big) | |
4509 | { | |
4510 | unsigned int size; | |
4511 | LITTLENUM_TYPE *nums; | |
4512 | ||
252b5132 RH |
4513 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4514 | if (nbytes < size) | |
4515 | { | |
93d90f46 | 4516 | int i = nbytes / CHARS_PER_LITTLENUM; |
5f2b6bc9 | 4517 | |
93d90f46 AM |
4518 | if (i != 0) |
4519 | { | |
4520 | LITTLENUM_TYPE sign = 0; | |
4521 | if ((generic_bignum[--i] | |
4522 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4523 | sign = ~(LITTLENUM_TYPE) 0; | |
5f2b6bc9 | 4524 | |
93d90f46 AM |
4525 | while (++i < exp->X_add_number) |
4526 | if (generic_bignum[i] != sign) | |
4527 | break; | |
4528 | } | |
5f2b6bc9 NC |
4529 | else if (nbytes == 1) |
4530 | { | |
4531 | /* We have nbytes == 1 and CHARS_PER_LITTLENUM == 2 (probably). | |
4532 | Check that bits 8.. of generic_bignum[0] match bit 7 | |
4533 | and that they match all of generic_bignum[1..exp->X_add_number]. */ | |
4534 | LITTLENUM_TYPE sign = (generic_bignum[0] & (1 << 7)) ? -1 : 0; | |
4535 | LITTLENUM_TYPE himask = LITTLENUM_MASK & ~ 0xFF; | |
4536 | ||
4537 | if ((generic_bignum[0] & himask) == (sign & himask)) | |
4538 | { | |
4539 | while (++i < exp->X_add_number) | |
4540 | if (generic_bignum[i] != sign) | |
4541 | break; | |
4542 | } | |
4543 | } | |
4544 | ||
93d90f46 | 4545 | if (i < exp->X_add_number) |
992a06ee AM |
4546 | as_warn (ngettext ("bignum truncated to %d byte", |
4547 | "bignum truncated to %d bytes", | |
4548 | nbytes), | |
4549 | nbytes); | |
252b5132 RH |
4550 | size = nbytes; |
4551 | } | |
4552 | ||
93d90f46 AM |
4553 | if (nbytes == 1) |
4554 | { | |
4555 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4556 | return; | |
4557 | } | |
4558 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4559 | ||
252b5132 RH |
4560 | if (target_big_endian) |
4561 | { | |
4562 | while (nbytes > size) | |
4563 | { | |
4564 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4565 | nbytes -= CHARS_PER_LITTLENUM; | |
4566 | p += CHARS_PER_LITTLENUM; | |
4567 | } | |
4568 | ||
4569 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4570 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4571 | { |
4572 | --nums; | |
4573 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4574 | size -= CHARS_PER_LITTLENUM; | |
4575 | p += CHARS_PER_LITTLENUM; | |
4576 | } | |
4577 | } | |
4578 | else | |
4579 | { | |
4580 | nums = generic_bignum; | |
ceac3f62 | 4581 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4582 | { |
4583 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4584 | ++nums; | |
4585 | size -= CHARS_PER_LITTLENUM; | |
4586 | p += CHARS_PER_LITTLENUM; | |
4587 | nbytes -= CHARS_PER_LITTLENUM; | |
4588 | } | |
4589 | ||
ceac3f62 | 4590 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4591 | { |
4592 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4593 | nbytes -= CHARS_PER_LITTLENUM; | |
4594 | p += CHARS_PER_LITTLENUM; | |
4595 | } | |
4596 | } | |
4597 | } | |
4598 | else | |
62ebcb5c | 4599 | emit_expr_fix (exp, nbytes, frag_now, p, TC_PARSE_CONS_RETURN_NONE); |
7ddd14de BW |
4600 | } |
4601 | ||
4602 | void | |
62ebcb5c | 4603 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p, |
00c06fdc | 4604 | TC_PARSE_CONS_RETURN_TYPE r ATTRIBUTE_UNUSED) |
7ddd14de | 4605 | { |
62ebcb5c AM |
4606 | int offset = 0; |
4607 | unsigned int size = nbytes; | |
4608 | ||
4609 | memset (p, 0, size); | |
252b5132 | 4610 | |
7ddd14de | 4611 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4612 | |
252b5132 | 4613 | #ifdef TC_CONS_FIX_NEW |
62ebcb5c | 4614 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal + offset, size, exp, r); |
252b5132 | 4615 | #else |
62ebcb5c AM |
4616 | if (r != TC_PARSE_CONS_RETURN_NONE) |
4617 | { | |
4618 | reloc_howto_type *reloc_howto; | |
252b5132 | 4619 | |
62ebcb5c AM |
4620 | reloc_howto = bfd_reloc_type_lookup (stdoutput, r); |
4621 | size = bfd_get_reloc_size (reloc_howto); | |
4622 | ||
4623 | if (size > nbytes) | |
4624 | { | |
992a06ee AM |
4625 | as_bad (ngettext ("%s relocations do not fit in %u byte", |
4626 | "%s relocations do not fit in %u bytes", | |
4627 | nbytes), | |
62ebcb5c AM |
4628 | reloc_howto->name, nbytes); |
4629 | return; | |
4630 | } | |
4631 | else if (target_big_endian) | |
4632 | offset = nbytes - size; | |
4633 | } | |
4634 | else | |
4635 | switch (size) | |
7ddd14de BW |
4636 | { |
4637 | case 1: | |
4638 | r = BFD_RELOC_8; | |
4639 | break; | |
4640 | case 2: | |
4641 | r = BFD_RELOC_16; | |
4642 | break; | |
d4f4f3fb AM |
4643 | case 3: |
4644 | r = BFD_RELOC_24; | |
4645 | break; | |
7ddd14de BW |
4646 | case 4: |
4647 | r = BFD_RELOC_32; | |
4648 | break; | |
4649 | case 8: | |
4650 | r = BFD_RELOC_64; | |
4651 | break; | |
4652 | default: | |
62ebcb5c AM |
4653 | as_bad (_("unsupported BFD relocation size %u"), size); |
4654 | return; | |
252b5132 | 4655 | } |
62ebcb5c AM |
4656 | fix_new_exp (frag, p - frag->fr_literal + offset, size, |
4657 | exp, 0, r); | |
252b5132 | 4658 | #endif |
252b5132 RH |
4659 | } |
4660 | \f | |
4661 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
4662 | ||
4663 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
4664 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
4665 | then pack them all together. We do a little better in that we allow | |
4666 | them in words, longs, etc. and we'll pack them in target byte order | |
4667 | for you. | |
4668 | ||
47eebc20 | 4669 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
4670 | entirely fit, put it in the next unit. Overflowing the bitfield is |
4671 | explicitly *not* even a warning. The bitwidth should be considered | |
4672 | a "mask". | |
4673 | ||
4674 | To use this function the tc-XXX.h file should define | |
4675 | BITFIELD_CONS_EXPRESSIONS. */ | |
4676 | ||
041ff4dd | 4677 | static void |
e046cf80 | 4678 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4679 | { |
4680 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
4681 | char *hold = input_line_pointer; | |
4682 | ||
4683 | (void) expression (exp); | |
4684 | ||
4685 | if (*input_line_pointer == ':') | |
041ff4dd NC |
4686 | { |
4687 | /* Bitfields. */ | |
252b5132 RH |
4688 | long value = 0; |
4689 | ||
4690 | for (;;) | |
4691 | { | |
4692 | unsigned long width; | |
4693 | ||
4694 | if (*input_line_pointer != ':') | |
4695 | { | |
4696 | input_line_pointer = hold; | |
4697 | break; | |
041ff4dd | 4698 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
4699 | |
4700 | /* In the general case, we can't allow | |
4701 | full expressions with symbol | |
4702 | differences and such. The relocation | |
4703 | entries for symbols not defined in this | |
4704 | assembly would require arbitrary field | |
4705 | widths, positions, and masks which most | |
4706 | of our current object formats don't | |
4707 | support. | |
4708 | ||
4709 | In the specific case where a symbol | |
4710 | *is* defined in this assembly, we | |
4711 | *could* build fixups and track it, but | |
4712 | this could lead to confusion for the | |
4713 | backends. I'm lazy. I'll take any | |
4714 | SEG_ABSOLUTE. I think that means that | |
4715 | you can use a previous .set or | |
041ff4dd | 4716 | .equ type symbol. xoxorich. */ |
252b5132 RH |
4717 | |
4718 | if (exp->X_op == O_absent) | |
4719 | { | |
4720 | as_warn (_("using a bit field width of zero")); | |
4721 | exp->X_add_number = 0; | |
4722 | exp->X_op = O_constant; | |
041ff4dd | 4723 | } /* Implied zero width bitfield. */ |
252b5132 RH |
4724 | |
4725 | if (exp->X_op != O_constant) | |
4726 | { | |
4727 | *input_line_pointer = '\0'; | |
4728 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
4729 | *input_line_pointer = ':'; | |
4730 | demand_empty_rest_of_line (); | |
4731 | return; | |
041ff4dd | 4732 | } /* Too complex. */ |
252b5132 RH |
4733 | |
4734 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
4735 | { | |
992a06ee AM |
4736 | as_warn (ngettext ("field width %lu too big to fit in %d byte:" |
4737 | " truncated to %d bits", | |
4738 | "field width %lu too big to fit in %d bytes:" | |
4739 | " truncated to %d bits", | |
4740 | nbytes), | |
252b5132 RH |
4741 | width, nbytes, (BITS_PER_CHAR * nbytes)); |
4742 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 4743 | } /* Too big. */ |
252b5132 RH |
4744 | |
4745 | if (width > bits_available) | |
4746 | { | |
4747 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
4748 | input_line_pointer = hold; | |
4749 | exp->X_add_number = value; | |
4750 | break; | |
041ff4dd | 4751 | } /* Won't fit. */ |
252b5132 | 4752 | |
ef99799a KH |
4753 | /* Skip ':'. */ |
4754 | hold = ++input_line_pointer; | |
252b5132 RH |
4755 | |
4756 | (void) expression (exp); | |
4757 | if (exp->X_op != O_constant) | |
4758 | { | |
4759 | char cache = *input_line_pointer; | |
4760 | ||
4761 | *input_line_pointer = '\0'; | |
4762 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
4763 | *input_line_pointer = cache; | |
4764 | demand_empty_rest_of_line (); | |
4765 | return; | |
041ff4dd | 4766 | } /* Too complex. */ |
252b5132 | 4767 | |
8d3842cd | 4768 | value |= ((~(-(1 << width)) & exp->X_add_number) |
252b5132 RH |
4769 | << ((BITS_PER_CHAR * nbytes) - bits_available)); |
4770 | ||
4771 | if ((bits_available -= width) == 0 | |
4772 | || is_it_end_of_statement () | |
4773 | || *input_line_pointer != ',') | |
4774 | { | |
4775 | break; | |
041ff4dd | 4776 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4777 | |
4778 | hold = ++input_line_pointer; | |
4779 | (void) expression (exp); | |
041ff4dd | 4780 | } |
252b5132 RH |
4781 | |
4782 | exp->X_add_number = value; | |
4783 | exp->X_op = O_constant; | |
4784 | exp->X_unsigned = 1; | |
956a6ba3 | 4785 | exp->X_extrabit = 0; |
041ff4dd NC |
4786 | } |
4787 | } | |
252b5132 RH |
4788 | |
4789 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4790 | \f | |
4791 | /* Handle an MRI style string expression. */ | |
4792 | ||
abd63a32 | 4793 | #ifdef TC_M68K |
252b5132 | 4794 | static void |
62ebcb5c | 4795 | parse_mri_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4796 | { |
4797 | if (*input_line_pointer != '\'' | |
4798 | && (input_line_pointer[1] != '\'' | |
4799 | || (*input_line_pointer != 'A' | |
4800 | && *input_line_pointer != 'E'))) | |
1e539319 | 4801 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
252b5132 RH |
4802 | else |
4803 | { | |
4804 | unsigned int scan; | |
4805 | unsigned int result = 0; | |
4806 | ||
4807 | /* An MRI style string. Cut into as many bytes as will fit into | |
4808 | a nbyte chunk, left justify if necessary, and separate with | |
4809 | commas so we can try again later. */ | |
4810 | if (*input_line_pointer == 'A') | |
4811 | ++input_line_pointer; | |
4812 | else if (*input_line_pointer == 'E') | |
4813 | { | |
4814 | as_bad (_("EBCDIC constants are not supported")); | |
4815 | ++input_line_pointer; | |
4816 | } | |
4817 | ||
4818 | input_line_pointer++; | |
4819 | for (scan = 0; scan < nbytes; scan++) | |
4820 | { | |
4821 | if (*input_line_pointer == '\'') | |
4822 | { | |
4823 | if (input_line_pointer[1] == '\'') | |
4824 | { | |
4825 | input_line_pointer++; | |
4826 | } | |
4827 | else | |
4828 | break; | |
4829 | } | |
4830 | result = (result << 8) | (*input_line_pointer++); | |
4831 | } | |
4832 | ||
041ff4dd | 4833 | /* Left justify. */ |
252b5132 RH |
4834 | while (scan < nbytes) |
4835 | { | |
4836 | result <<= 8; | |
4837 | scan++; | |
4838 | } | |
f0e652b4 | 4839 | |
041ff4dd | 4840 | /* Create correct expression. */ |
252b5132 RH |
4841 | exp->X_op = O_constant; |
4842 | exp->X_add_number = result; | |
f0e652b4 | 4843 | |
041ff4dd | 4844 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4845 | if (input_line_pointer[0] != '\'' || |
4846 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4847 | { | |
4848 | input_line_pointer -= 2; | |
4849 | input_line_pointer[0] = ','; | |
4850 | input_line_pointer[1] = '\''; | |
4851 | } | |
4852 | else | |
4853 | input_line_pointer++; | |
4854 | } | |
4855 | } | |
abd63a32 | 4856 | #endif /* TC_M68K */ |
252b5132 RH |
4857 | \f |
4858 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4859 | ||
4860 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4861 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4862 | object file COUNT times. | |
4863 | ||
4864 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4865 | ||
4866 | static void | |
e046cf80 | 4867 | parse_repeat_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4868 | { |
4869 | expressionS count; | |
3d540e93 | 4870 | int i; |
252b5132 RH |
4871 | |
4872 | expression (exp); | |
4873 | ||
4874 | if (*input_line_pointer != ':') | |
4875 | { | |
4876 | /* No repeat count. */ | |
4877 | return; | |
4878 | } | |
4879 | ||
4880 | ++input_line_pointer; | |
4881 | expression (&count); | |
4882 | if (count.X_op != O_constant | |
4883 | || count.X_add_number <= 0) | |
4884 | { | |
0e389e77 | 4885 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4886 | return; |
4887 | } | |
4888 | ||
4889 | /* The cons function is going to output this expression once. So we | |
4890 | output it count - 1 times. */ | |
4891 | for (i = count.X_add_number - 1; i > 0; i--) | |
4892 | emit_expr (exp, nbytes); | |
4893 | } | |
4894 | ||
4895 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4896 | \f | |
4897 | /* Parse a floating point number represented as a hex constant. This | |
4898 | permits users to specify the exact bits they want in the floating | |
4899 | point number. */ | |
4900 | ||
4901 | static int | |
39e6acbd | 4902 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4903 | { |
4904 | int length; | |
4905 | int i; | |
4906 | ||
4907 | switch (float_type) | |
4908 | { | |
4909 | case 'f': | |
4910 | case 'F': | |
4911 | case 's': | |
4912 | case 'S': | |
4913 | length = 4; | |
4914 | break; | |
4915 | ||
4916 | case 'd': | |
4917 | case 'D': | |
4918 | case 'r': | |
4919 | case 'R': | |
4920 | length = 8; | |
4921 | break; | |
4922 | ||
4923 | case 'x': | |
4924 | case 'X': | |
4925 | length = 12; | |
4926 | break; | |
4927 | ||
4928 | case 'p': | |
4929 | case 'P': | |
4930 | length = 12; | |
4931 | break; | |
4932 | ||
4933 | default: | |
0e389e77 | 4934 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4935 | return -1; |
4936 | } | |
4937 | ||
4938 | /* It would be nice if we could go through expression to parse the | |
4939 | hex constant, but if we get a bignum it's a pain to sort it into | |
4940 | the buffer correctly. */ | |
4941 | i = 0; | |
4942 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4943 | { | |
4944 | int d; | |
4945 | ||
4946 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4947 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4948 | if (*input_line_pointer == '_') |
4949 | { | |
4950 | ++input_line_pointer; | |
4951 | continue; | |
4952 | } | |
4953 | ||
4954 | if (i >= length) | |
4955 | { | |
0e389e77 | 4956 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4957 | return -1; |
4958 | } | |
4959 | d = hex_value (*input_line_pointer) << 4; | |
4960 | ++input_line_pointer; | |
4961 | while (*input_line_pointer == '_') | |
4962 | ++input_line_pointer; | |
4963 | if (hex_p (*input_line_pointer)) | |
4964 | { | |
4965 | d += hex_value (*input_line_pointer); | |
4966 | ++input_line_pointer; | |
4967 | } | |
4968 | if (target_big_endian) | |
4969 | bytes[i] = d; | |
4970 | else | |
4971 | bytes[length - i - 1] = d; | |
4972 | ++i; | |
4973 | } | |
4974 | ||
4975 | if (i < length) | |
4976 | { | |
4977 | if (target_big_endian) | |
4978 | memset (bytes + i, 0, length - i); | |
4979 | else | |
4980 | memset (bytes, 0, length - i); | |
4981 | } | |
4982 | ||
4983 | return length; | |
4984 | } | |
4985 | ||
d6415f6c | 4986 | /* float_cons() |
f0e652b4 | 4987 | |
041ff4dd NC |
4988 | CONStruct some more frag chars of .floats .ffloats etc. |
4989 | Makes 0 or more new frags. | |
4990 | If need_pass_2 == 1, no frags are emitted. | |
4991 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4992 | |
041ff4dd NC |
4993 | A floating constant is defined by atof_generic(), except it is preceded |
4994 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4995 | reading, I decided to be incompatible. This always tries to give you | |
4996 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4997 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4998 | a choice of 2 flavours of noise according to which of 2 floating-point |
4999 | scanners you directed AS to use. | |
f0e652b4 | 5000 | |
041ff4dd | 5001 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
5002 | |
5003 | void | |
39e6acbd | 5004 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 5005 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 5006 | { |
3d540e93 | 5007 | char *p; |
041ff4dd | 5008 | int length; /* Number of chars in an object. */ |
6d4af3c2 | 5009 | const char *err; /* Error from scanning floating literal. */ |
252b5132 RH |
5010 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
5011 | ||
5012 | if (is_it_end_of_statement ()) | |
5013 | { | |
5014 | demand_empty_rest_of_line (); | |
5015 | return; | |
5016 | } | |
5017 | ||
ec9ab52c JB |
5018 | if (now_seg == absolute_section) |
5019 | { | |
5020 | as_bad (_("attempt to store float in absolute section")); | |
5021 | ignore_rest_of_line (); | |
5022 | return; | |
5023 | } | |
5024 | ||
5025 | if (in_bss ()) | |
5026 | { | |
5027 | as_bad (_("attempt to store float in section `%s'"), | |
5028 | segment_name (now_seg)); | |
5029 | ignore_rest_of_line (); | |
5030 | return; | |
5031 | } | |
5032 | ||
252b5132 RH |
5033 | #ifdef md_flush_pending_output |
5034 | md_flush_pending_output (); | |
5035 | #endif | |
5036 | ||
cc3f603a JM |
5037 | #ifdef md_cons_align |
5038 | md_cons_align (1); | |
5039 | #endif | |
5040 | ||
252b5132 RH |
5041 | do |
5042 | { | |
041ff4dd | 5043 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
5044 | SKIP_WHITESPACE (); |
5045 | ||
5046 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
5047 | letter is legal. Someone may invent a "z" format and this routine |
5048 | has no use for such information. Lusers beware: you get | |
5049 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 5050 | if (input_line_pointer[0] == '0' |
3882b010 | 5051 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
5052 | input_line_pointer += 2; |
5053 | ||
5054 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 5055 | point with the exact digits specified. */ |
252b5132 RH |
5056 | if (input_line_pointer[0] == ':') |
5057 | { | |
5058 | ++input_line_pointer; | |
5059 | length = hex_float (float_type, temp); | |
5060 | if (length < 0) | |
5061 | { | |
5062 | ignore_rest_of_line (); | |
5063 | return; | |
5064 | } | |
5065 | } | |
5066 | else | |
5067 | { | |
5068 | err = md_atof (float_type, temp, &length); | |
5069 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 5070 | know (err != NULL || length > 0); |
252b5132 RH |
5071 | if (err) |
5072 | { | |
0e389e77 | 5073 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
5074 | ignore_rest_of_line (); |
5075 | return; | |
5076 | } | |
5077 | } | |
5078 | ||
5079 | if (!need_pass_2) | |
5080 | { | |
5081 | int count; | |
5082 | ||
5083 | count = 1; | |
5084 | ||
5085 | #ifdef REPEAT_CONS_EXPRESSIONS | |
5086 | if (*input_line_pointer == ':') | |
5087 | { | |
5088 | expressionS count_exp; | |
5089 | ||
5090 | ++input_line_pointer; | |
5091 | expression (&count_exp); | |
f0e652b4 | 5092 | |
252b5132 RH |
5093 | if (count_exp.X_op != O_constant |
5094 | || count_exp.X_add_number <= 0) | |
041ff4dd | 5095 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
5096 | else |
5097 | count = count_exp.X_add_number; | |
5098 | } | |
5099 | #endif | |
5100 | ||
5101 | while (--count >= 0) | |
5102 | { | |
5103 | p = frag_more (length); | |
5104 | memcpy (p, temp, (unsigned int) length); | |
5105 | } | |
5106 | } | |
5107 | SKIP_WHITESPACE (); | |
5108 | } | |
5109 | while (*input_line_pointer++ == ','); | |
5110 | ||
041ff4dd NC |
5111 | /* Put terminator back into stream. */ |
5112 | --input_line_pointer; | |
252b5132 | 5113 | demand_empty_rest_of_line (); |
041ff4dd | 5114 | } |
252b5132 | 5115 | \f |
9136aa49 | 5116 | /* LEB128 Encoding. |
252b5132 | 5117 | |
9136aa49 DG |
5118 | Note - we are using the DWARF standard's definition of LEB128 encoding |
5119 | where each 7-bit value is a stored in a byte, *not* an octet. This | |
5120 | means that on targets where a byte contains multiple octets there is | |
5121 | a *huge waste of space*. (This also means that we do not have to | |
5122 | have special versions of these functions for when OCTETS_PER_BYTE_POWER | |
5123 | is non-zero). | |
5124 | ||
5125 | If the 7-bit values were to be packed into N-bit bytes (where N > 8) | |
5126 | we would then have to consider whether multiple, successive LEB128 | |
5127 | values should be packed into the bytes without padding (bad idea) or | |
5128 | whether each LEB128 number is padded out to a whole number of bytes. | |
5129 | Plus you have to decide on the endianness of packing octets into a | |
5130 | byte. */ | |
5131 | ||
5132 | /* Return the size of a LEB128 value in bytes. */ | |
5133 | ||
5134 | static inline unsigned int | |
39e6acbd | 5135 | sizeof_sleb128 (offsetT value) |
252b5132 | 5136 | { |
3d540e93 NC |
5137 | int size = 0; |
5138 | unsigned byte; | |
252b5132 RH |
5139 | |
5140 | do | |
5141 | { | |
5142 | byte = (value & 0x7f); | |
5143 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5144 | Fortunately, we can structure things so that the extra work reduces | |
5145 | to a noop on systems that do things "properly". */ | |
5146 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5147 | size += 1; | |
5148 | } | |
5149 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
5150 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5151 | ||
5152 | return size; | |
5153 | } | |
5154 | ||
9136aa49 | 5155 | static inline unsigned int |
39e6acbd | 5156 | sizeof_uleb128 (valueT value) |
252b5132 | 5157 | { |
3d540e93 | 5158 | int size = 0; |
252b5132 RH |
5159 | |
5160 | do | |
5161 | { | |
252b5132 RH |
5162 | value >>= 7; |
5163 | size += 1; | |
5164 | } | |
5165 | while (value != 0); | |
5166 | ||
5167 | return size; | |
5168 | } | |
5169 | ||
9136aa49 | 5170 | unsigned int |
39e6acbd | 5171 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
5172 | { |
5173 | if (sign) | |
5174 | return sizeof_sleb128 ((offsetT) value); | |
5175 | else | |
5176 | return sizeof_uleb128 (value); | |
5177 | } | |
5178 | ||
9136aa49 | 5179 | /* Output a LEB128 value. Returns the number of bytes used. */ |
252b5132 | 5180 | |
9136aa49 | 5181 | static inline unsigned int |
39e6acbd | 5182 | output_sleb128 (char *p, offsetT value) |
252b5132 | 5183 | { |
3d540e93 NC |
5184 | char *orig = p; |
5185 | int more; | |
252b5132 RH |
5186 | |
5187 | do | |
5188 | { | |
5189 | unsigned byte = (value & 0x7f); | |
5190 | ||
5191 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5192 | Fortunately, we can structure things so that the extra work reduces | |
5193 | to a noop on systems that do things "properly". */ | |
5194 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5195 | ||
5196 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
5197 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5198 | if (more) | |
5199 | byte |= 0x80; | |
5200 | ||
5201 | *p++ = byte; | |
5202 | } | |
5203 | while (more); | |
5204 | ||
5205 | return p - orig; | |
5206 | } | |
5207 | ||
9136aa49 | 5208 | static inline unsigned int |
39e6acbd | 5209 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
5210 | { |
5211 | char *orig = p; | |
5212 | ||
5213 | do | |
5214 | { | |
5215 | unsigned byte = (value & 0x7f); | |
9136aa49 | 5216 | |
252b5132 RH |
5217 | value >>= 7; |
5218 | if (value != 0) | |
5219 | /* More bytes to follow. */ | |
5220 | byte |= 0x80; | |
5221 | ||
5222 | *p++ = byte; | |
5223 | } | |
5224 | while (value != 0); | |
5225 | ||
5226 | return p - orig; | |
5227 | } | |
5228 | ||
9136aa49 | 5229 | unsigned int |
39e6acbd | 5230 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
5231 | { |
5232 | if (sign) | |
5233 | return output_sleb128 (p, (offsetT) value); | |
5234 | else | |
5235 | return output_uleb128 (p, value); | |
5236 | } | |
5237 | ||
5238 | /* Do the same for bignums. We combine sizeof with output here in that | |
5239 | we don't output for NULL values of P. It isn't really as critical as | |
9136aa49 DG |
5240 | for "normal" values that this be streamlined. Returns the number of |
5241 | bytes used. */ | |
252b5132 | 5242 | |
9136aa49 DG |
5243 | static inline unsigned int |
5244 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5245 | { |
5246 | char *orig = p; | |
5247 | valueT val = 0; | |
5248 | int loaded = 0; | |
5249 | unsigned byte; | |
5250 | ||
5251 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
5252 | while (size > 1 |
5253 | && bignum[size - 1] == LITTLENUM_MASK | |
5254 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
5255 | size--; |
5256 | ||
5257 | do | |
5258 | { | |
e5604d79 RS |
5259 | /* OR in the next part of the littlenum. */ |
5260 | val |= (*bignum << loaded); | |
5261 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
5262 | size--; | |
5263 | bignum++; | |
5264 | ||
5265 | /* Add bytes until there are less than 7 bits left in VAL | |
5266 | or until every non-sign bit has been written. */ | |
5267 | do | |
252b5132 | 5268 | { |
e5604d79 RS |
5269 | byte = val & 0x7f; |
5270 | loaded -= 7; | |
5271 | val >>= 7; | |
5272 | if (size > 0 | |
5273 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 5274 | byte |= 0x80; |
e5604d79 RS |
5275 | |
5276 | if (orig) | |
5277 | *p = byte; | |
5278 | p++; | |
252b5132 | 5279 | } |
e5604d79 RS |
5280 | while ((byte & 0x80) != 0 && loaded >= 7); |
5281 | } | |
5282 | while (size > 0); | |
252b5132 | 5283 | |
e5604d79 RS |
5284 | /* Mop up any left-over bits (of which there will be less than 7). */ |
5285 | if ((byte & 0x80) != 0) | |
5286 | { | |
5287 | /* Sign-extend VAL. */ | |
5288 | if (val & (1 << (loaded - 1))) | |
29798047 | 5289 | val |= ~0U << loaded; |
252b5132 | 5290 | if (orig) |
e5604d79 | 5291 | *p = val & 0x7f; |
252b5132 RH |
5292 | p++; |
5293 | } | |
252b5132 RH |
5294 | |
5295 | return p - orig; | |
5296 | } | |
5297 | ||
9136aa49 DG |
5298 | static inline unsigned int |
5299 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5300 | { |
5301 | char *orig = p; | |
5302 | valueT val = 0; | |
5303 | int loaded = 0; | |
5304 | unsigned byte; | |
5305 | ||
5306 | /* Strip leading zeros off the bignum. */ | |
5307 | /* XXX: Is this needed? */ | |
041ff4dd | 5308 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
5309 | size--; |
5310 | ||
5311 | do | |
5312 | { | |
5313 | if (loaded < 7 && size > 0) | |
5314 | { | |
5315 | val |= (*bignum << loaded); | |
5316 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5317 | size--; | |
5318 | bignum++; | |
5319 | } | |
5320 | ||
5321 | byte = val & 0x7f; | |
5322 | loaded -= 7; | |
5323 | val >>= 7; | |
5324 | ||
5325 | if (size > 0 || val) | |
5326 | byte |= 0x80; | |
5327 | ||
5328 | if (orig) | |
5329 | *p = byte; | |
5330 | p++; | |
5331 | } | |
5332 | while (byte & 0x80); | |
5333 | ||
5334 | return p - orig; | |
5335 | } | |
5336 | ||
9136aa49 DG |
5337 | static unsigned int |
5338 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size, int sign) | |
252b5132 RH |
5339 | { |
5340 | if (sign) | |
5341 | return output_big_sleb128 (p, bignum, size); | |
5342 | else | |
5343 | return output_big_uleb128 (p, bignum, size); | |
5344 | } | |
5345 | ||
5346 | /* Generate the appropriate fragments for a given expression to emit a | |
9a724e7b | 5347 | leb128 value. SIGN is 1 for sleb, 0 for uleb. */ |
252b5132 | 5348 | |
87c245cc | 5349 | static void |
39e6acbd | 5350 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5351 | { |
5352 | operatorT op = exp->X_op; | |
b7712f8d | 5353 | unsigned int nbytes; |
252b5132 RH |
5354 | |
5355 | if (op == O_absent || op == O_illegal) | |
5356 | { | |
5357 | as_warn (_("zero assumed for missing expression")); | |
5358 | exp->X_add_number = 0; | |
5359 | op = O_constant; | |
5360 | } | |
5361 | else if (op == O_big && exp->X_add_number <= 0) | |
5362 | { | |
0e389e77 | 5363 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5364 | exp->X_add_number = 0; |
5365 | op = O_constant; | |
5366 | } | |
5367 | else if (op == O_register) | |
5368 | { | |
5369 | as_warn (_("register value used as expression")); | |
5370 | op = O_constant; | |
5371 | } | |
e5604d79 RS |
5372 | else if (op == O_constant |
5373 | && sign | |
956a6ba3 | 5374 | && (exp->X_add_number < 0) == !exp->X_extrabit) |
e5604d79 RS |
5375 | { |
5376 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5377 | doesn't reflect the sign of the original value. Convert EXP | |
5378 | to a correctly-extended bignum instead. */ | |
956a6ba3 | 5379 | convert_to_bignum (exp, exp->X_extrabit); |
e5604d79 RS |
5380 | op = O_big; |
5381 | } | |
252b5132 | 5382 | |
ec9ab52c JB |
5383 | if (now_seg == absolute_section) |
5384 | { | |
5385 | if (op != O_constant || exp->X_add_number != 0) | |
5386 | as_bad (_("attempt to store value in absolute section")); | |
5387 | abs_section_offset++; | |
5388 | return; | |
5389 | } | |
5390 | ||
5391 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
5392 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
5393 | segment_name (now_seg)); | |
5394 | ||
67a659f6 RH |
5395 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5396 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5397 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5398 | if (check_eh_frame (exp, &nbytes)) |
5399 | abort (); | |
5400 | ||
371b7465 RH |
5401 | /* Let the backend know that subsequent data may be byte aligned. */ |
5402 | #ifdef md_cons_align | |
5403 | md_cons_align (1); | |
5404 | #endif | |
5405 | ||
252b5132 RH |
5406 | if (op == O_constant) |
5407 | { | |
5408 | /* If we've got a constant, emit the thing directly right now. */ | |
5409 | ||
5410 | valueT value = exp->X_add_number; | |
9136aa49 | 5411 | unsigned int size; |
252b5132 RH |
5412 | char *p; |
5413 | ||
5414 | size = sizeof_leb128 (value, sign); | |
5415 | p = frag_more (size); | |
9136aa49 DG |
5416 | if (output_leb128 (p, value, sign) > size) |
5417 | abort (); | |
252b5132 RH |
5418 | } |
5419 | else if (op == O_big) | |
5420 | { | |
5421 | /* O_big is a different sort of constant. */ | |
74def31d | 5422 | int nbr_digits = exp->X_add_number; |
9136aa49 | 5423 | unsigned int size; |
252b5132 RH |
5424 | char *p; |
5425 | ||
74def31d TG |
5426 | /* If the leading littenum is 0xffff, prepend a 0 to avoid confusion with |
5427 | a signed number. Unary operators like - or ~ always extend the | |
5428 | bignum to its largest size. */ | |
5429 | if (exp->X_unsigned | |
5430 | && nbr_digits < SIZE_OF_LARGE_NUMBER | |
5431 | && generic_bignum[nbr_digits - 1] == LITTLENUM_MASK) | |
5432 | generic_bignum[nbr_digits++] = 0; | |
5433 | ||
5434 | size = output_big_leb128 (NULL, generic_bignum, nbr_digits, sign); | |
252b5132 | 5435 | p = frag_more (size); |
74def31d | 5436 | if (output_big_leb128 (p, generic_bignum, nbr_digits, sign) > size) |
9136aa49 | 5437 | abort (); |
252b5132 RH |
5438 | } |
5439 | else | |
5440 | { | |
041ff4dd | 5441 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5442 | resolve things later. */ |
5443 | ||
041ff4dd | 5444 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5445 | make_expr_symbol (exp), 0, (char *) NULL); |
5446 | } | |
5447 | } | |
5448 | ||
5449 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5450 | ||
5451 | void | |
39e6acbd | 5452 | s_leb128 (int sign) |
252b5132 RH |
5453 | { |
5454 | expressionS exp; | |
5455 | ||
00bbdfe7 BW |
5456 | #ifdef md_flush_pending_output |
5457 | md_flush_pending_output (); | |
5458 | #endif | |
5459 | ||
041ff4dd NC |
5460 | do |
5461 | { | |
ba8826a8 | 5462 | deferred_expression (&exp); |
041ff4dd NC |
5463 | emit_leb128_expr (&exp, sign); |
5464 | } | |
5465 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5466 | |
5467 | input_line_pointer--; | |
5468 | demand_empty_rest_of_line (); | |
5469 | } | |
5470 | \f | |
38a57ae7 NC |
5471 | static void |
5472 | stringer_append_char (int c, int bitsize) | |
5473 | { | |
ec9ab52c JB |
5474 | if (c && in_bss ()) |
5475 | as_bad (_("attempt to store non-empty string in section `%s'"), | |
5476 | segment_name (now_seg)); | |
5477 | ||
38a57ae7 NC |
5478 | if (!target_big_endian) |
5479 | FRAG_APPEND_1_CHAR (c); | |
5480 | ||
5481 | switch (bitsize) | |
5482 | { | |
5483 | case 64: | |
5484 | FRAG_APPEND_1_CHAR (0); | |
5485 | FRAG_APPEND_1_CHAR (0); | |
5486 | FRAG_APPEND_1_CHAR (0); | |
5487 | FRAG_APPEND_1_CHAR (0); | |
5488 | /* Fall through. */ | |
5489 | case 32: | |
5490 | FRAG_APPEND_1_CHAR (0); | |
5491 | FRAG_APPEND_1_CHAR (0); | |
5492 | /* Fall through. */ | |
5493 | case 16: | |
5494 | FRAG_APPEND_1_CHAR (0); | |
5495 | /* Fall through. */ | |
5496 | case 8: | |
5497 | break; | |
5498 | default: | |
5499 | /* Called with invalid bitsize argument. */ | |
5500 | abort (); | |
5501 | break; | |
5502 | } | |
5503 | if (target_big_endian) | |
5504 | FRAG_APPEND_1_CHAR (c); | |
5505 | } | |
5506 | ||
5507 | /* Worker to do .ascii etc statements. | |
5508 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5509 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5510 | check it. |
5511 | Checks for end-of-line. | |
5512 | BITS_APPENDZERO says how many bits are in a target char. | |
5513 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5514 | |
5515 | void | |
38a57ae7 | 5516 | stringer (int bits_appendzero) |
252b5132 | 5517 | { |
38a57ae7 NC |
5518 | const int bitsize = bits_appendzero & ~7; |
5519 | const int append_zero = bits_appendzero & 1; | |
5520 | unsigned int c; | |
87975d2a | 5521 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5522 | char *start; |
87975d2a | 5523 | #endif |
252b5132 RH |
5524 | |
5525 | #ifdef md_flush_pending_output | |
5526 | md_flush_pending_output (); | |
5527 | #endif | |
5528 | ||
cc3f603a JM |
5529 | #ifdef md_cons_align |
5530 | md_cons_align (1); | |
5531 | #endif | |
5532 | ||
35c1a439 JB |
5533 | /* If we have been switched into the abs_section then we |
5534 | will not have an obstack onto which we can hang strings. */ | |
5535 | if (now_seg == absolute_section) | |
5536 | { | |
5537 | as_bad (_("strings must be placed into a section")); | |
5538 | ignore_rest_of_line (); | |
5539 | return; | |
5540 | } | |
5541 | ||
041ff4dd NC |
5542 | /* The following awkward logic is to parse ZERO or more strings, |
5543 | comma separated. Recall a string expression includes spaces | |
5544 | before the opening '\"' and spaces after the closing '\"'. | |
5545 | We fake a leading ',' if there is (supposed to be) | |
5546 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5547 | if (is_it_end_of_statement ()) |
5548 | { | |
041ff4dd NC |
5549 | c = 0; /* Skip loop. */ |
5550 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5551 | } |
5552 | else | |
5553 | { | |
041ff4dd | 5554 | c = ','; /* Do loop. */ |
252b5132 | 5555 | } |
d6415f6c | 5556 | |
252b5132 RH |
5557 | while (c == ',' || c == '<' || c == '"') |
5558 | { | |
5559 | SKIP_WHITESPACE (); | |
5560 | switch (*input_line_pointer) | |
5561 | { | |
5562 | case '\"': | |
041ff4dd | 5563 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5564 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5565 | start = input_line_pointer; |
87975d2a | 5566 | #endif |
38a57ae7 | 5567 | |
252b5132 | 5568 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5569 | stringer_append_char (c, bitsize); |
5570 | ||
252b5132 | 5571 | if (append_zero) |
38a57ae7 NC |
5572 | stringer_append_char (0, bitsize); |
5573 | ||
252b5132 RH |
5574 | know (input_line_pointer[-1] == '\"'); |
5575 | ||
87975d2a | 5576 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5577 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5578 | will emit .string with a filename in the .debug section |
5579 | after a sequence of constants. See the comment in | |
5580 | emit_expr for the sequence. emit_expr will set | |
5581 | dwarf_file_string to non-zero if this string might be a | |
5582 | source file name. */ | |
252b5132 RH |
5583 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5584 | dwarf_file_string = 0; | |
5585 | else if (dwarf_file_string) | |
5586 | { | |
5587 | c = input_line_pointer[-1]; | |
5588 | input_line_pointer[-1] = '\0'; | |
5589 | listing_source_file (start); | |
5590 | input_line_pointer[-1] = c; | |
5591 | } | |
252b5132 RH |
5592 | #endif |
5593 | ||
5594 | break; | |
5595 | case '<': | |
5596 | input_line_pointer++; | |
5597 | c = get_single_number (); | |
38a57ae7 | 5598 | stringer_append_char (c, bitsize); |
252b5132 | 5599 | if (*input_line_pointer != '>') |
38a57ae7 NC |
5600 | as_bad (_("expected <nn>")); |
5601 | ||
252b5132 RH |
5602 | input_line_pointer++; |
5603 | break; | |
5604 | case ',': | |
5605 | input_line_pointer++; | |
5606 | break; | |
5607 | } | |
5608 | SKIP_WHITESPACE (); | |
5609 | c = *input_line_pointer; | |
5610 | } | |
5611 | ||
5612 | demand_empty_rest_of_line (); | |
38a57ae7 | 5613 | } |
252b5132 RH |
5614 | \f |
5615 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5616 | high bits set. We'll probably also have trouble with | |
5617 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5618 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5619 | |
041ff4dd | 5620 | unsigned int |
39e6acbd | 5621 | next_char_of_string (void) |
252b5132 | 5622 | { |
3d540e93 | 5623 | unsigned int c; |
252b5132 RH |
5624 | |
5625 | c = *input_line_pointer++ & CHAR_MASK; | |
5626 | switch (c) | |
5627 | { | |
f49547a6 NC |
5628 | case 0: |
5629 | /* PR 20902: Do not advance past the end of the buffer. */ | |
5630 | -- input_line_pointer; | |
5631 | c = NOT_A_CHAR; | |
5632 | break; | |
5633 | ||
252b5132 RH |
5634 | case '\"': |
5635 | c = NOT_A_CHAR; | |
5636 | break; | |
5637 | ||
5638 | case '\n': | |
0e389e77 | 5639 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5640 | bump_line_counters (); |
5641 | break; | |
5642 | ||
5643 | #ifndef NO_STRING_ESCAPES | |
5644 | case '\\': | |
d9800776 | 5645 | switch (c = *input_line_pointer++ & CHAR_MASK) |
252b5132 RH |
5646 | { |
5647 | case 'b': | |
5648 | c = '\b'; | |
5649 | break; | |
5650 | ||
5651 | case 'f': | |
5652 | c = '\f'; | |
5653 | break; | |
5654 | ||
5655 | case 'n': | |
5656 | c = '\n'; | |
5657 | break; | |
5658 | ||
5659 | case 'r': | |
5660 | c = '\r'; | |
5661 | break; | |
5662 | ||
5663 | case 't': | |
5664 | c = '\t'; | |
5665 | break; | |
5666 | ||
5667 | case 'v': | |
5668 | c = '\013'; | |
5669 | break; | |
5670 | ||
5671 | case '\\': | |
5672 | case '"': | |
041ff4dd | 5673 | break; /* As itself. */ |
252b5132 RH |
5674 | |
5675 | case '0': | |
5676 | case '1': | |
5677 | case '2': | |
5678 | case '3': | |
5679 | case '4': | |
5680 | case '5': | |
5681 | case '6': | |
5682 | case '7': | |
5683 | case '8': | |
5684 | case '9': | |
5685 | { | |
5686 | long number; | |
5687 | int i; | |
5688 | ||
041ff4dd | 5689 | for (i = 0, number = 0; |
3882b010 | 5690 | ISDIGIT (c) && i < 3; |
041ff4dd | 5691 | c = *input_line_pointer++, i++) |
252b5132 RH |
5692 | { |
5693 | number = number * 8 + c - '0'; | |
5694 | } | |
f0e652b4 | 5695 | |
d9800776 | 5696 | c = number & CHAR_MASK; |
252b5132 RH |
5697 | } |
5698 | --input_line_pointer; | |
5699 | break; | |
5700 | ||
5701 | case 'x': | |
5702 | case 'X': | |
5703 | { | |
5704 | long number; | |
5705 | ||
5706 | number = 0; | |
5707 | c = *input_line_pointer++; | |
3882b010 | 5708 | while (ISXDIGIT (c)) |
252b5132 | 5709 | { |
3882b010 | 5710 | if (ISDIGIT (c)) |
252b5132 | 5711 | number = number * 16 + c - '0'; |
3882b010 | 5712 | else if (ISUPPER (c)) |
252b5132 RH |
5713 | number = number * 16 + c - 'A' + 10; |
5714 | else | |
5715 | number = number * 16 + c - 'a' + 10; | |
5716 | c = *input_line_pointer++; | |
5717 | } | |
d9800776 | 5718 | c = number & CHAR_MASK; |
252b5132 RH |
5719 | --input_line_pointer; |
5720 | } | |
5721 | break; | |
5722 | ||
5723 | case '\n': | |
041ff4dd | 5724 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5725 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5726 | c = '\n'; |
5727 | bump_line_counters (); | |
5728 | break; | |
5729 | ||
f49547a6 NC |
5730 | case 0: |
5731 | /* Do not advance past the end of the buffer. */ | |
5732 | -- input_line_pointer; | |
5733 | c = NOT_A_CHAR; | |
5734 | break; | |
5735 | ||
252b5132 RH |
5736 | default: |
5737 | ||
5738 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5739 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5740 | c = '?'; |
5741 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5742 | ||
5743 | break; | |
041ff4dd | 5744 | } |
252b5132 RH |
5745 | break; |
5746 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
5747 | ||
5748 | default: | |
5749 | break; | |
041ff4dd | 5750 | } |
252b5132 | 5751 | return (c); |
041ff4dd | 5752 | } |
252b5132 RH |
5753 | \f |
5754 | static segT | |
3d540e93 | 5755 | get_segmented_expression (expressionS *expP) |
252b5132 | 5756 | { |
3d540e93 | 5757 | segT retval; |
252b5132 RH |
5758 | |
5759 | retval = expression (expP); | |
5760 | if (expP->X_op == O_illegal | |
5761 | || expP->X_op == O_absent | |
5762 | || expP->X_op == O_big) | |
5763 | { | |
0e389e77 | 5764 | as_bad (_("expected address expression")); |
252b5132 RH |
5765 | expP->X_op = O_constant; |
5766 | expP->X_add_number = 0; | |
5767 | retval = absolute_section; | |
5768 | } | |
5769 | return retval; | |
5770 | } | |
5771 | ||
041ff4dd | 5772 | static segT |
3d540e93 | 5773 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5774 | { |
259af69e | 5775 | segT retval = get_segmented_expression (expP); |
252b5132 | 5776 | |
259af69e | 5777 | if (retval == undefined_section) |
252b5132 RH |
5778 | { |
5779 | /* There is no easy way to extract the undefined symbol from the | |
5780 | expression. */ | |
5781 | if (expP->X_add_symbol != NULL | |
5782 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5783 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5784 | S_GET_NAME (expP->X_add_symbol)); | |
5785 | else | |
5786 | as_warn (_("some symbol undefined; zero assumed")); | |
5787 | retval = absolute_section; | |
5788 | expP->X_op = O_constant; | |
5789 | expP->X_add_number = 0; | |
5790 | } | |
259af69e | 5791 | return retval; |
041ff4dd | 5792 | } |
252b5132 | 5793 | |
041ff4dd | 5794 | char /* Return terminator. */ |
39e6acbd | 5795 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5796 | { |
5797 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5798 | *val_pointer = (long) get_absolute_expression (); | |
5799 | return (*input_line_pointer++); | |
5800 | } | |
5801 | \f | |
041ff4dd NC |
5802 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5803 | Give a warning if that happens. */ | |
5804 | ||
252b5132 | 5805 | char * |
39e6acbd | 5806 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5807 | { |
3d540e93 | 5808 | char *s; |
252b5132 RH |
5809 | |
5810 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5811 | { | |
3d540e93 | 5812 | int len; |
252b5132 RH |
5813 | |
5814 | for (len = *len_pointer; len > 0; len--) | |
5815 | { | |
5816 | if (*s == 0) | |
5817 | { | |
5818 | s = 0; | |
5819 | len = 1; | |
5820 | *len_pointer = 0; | |
0e389e77 | 5821 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5822 | } |
5823 | } | |
5824 | } | |
f0e652b4 | 5825 | |
252b5132 RH |
5826 | return s; |
5827 | } | |
5828 | \f | |
041ff4dd NC |
5829 | /* Demand string, but return a safe (=private) copy of the string. |
5830 | Return NULL if we can't read a string here. */ | |
5831 | ||
252b5132 | 5832 | char * |
39e6acbd | 5833 | demand_copy_string (int *lenP) |
252b5132 | 5834 | { |
3d540e93 NC |
5835 | unsigned int c; |
5836 | int len; | |
252b5132 RH |
5837 | char *retval; |
5838 | ||
5839 | len = 0; | |
5840 | SKIP_WHITESPACE (); | |
5841 | if (*input_line_pointer == '\"') | |
5842 | { | |
041ff4dd | 5843 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5844 | |
5845 | while (is_a_char (c = next_char_of_string ())) | |
5846 | { | |
5847 | obstack_1grow (¬es, c); | |
5848 | len++; | |
5849 | } | |
5850 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5851 | null terminated string. */ |
252b5132 | 5852 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5853 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5854 | } |
5855 | else | |
5856 | { | |
c95b35a9 | 5857 | as_bad (_("missing string")); |
252b5132 RH |
5858 | retval = NULL; |
5859 | ignore_rest_of_line (); | |
5860 | } | |
5861 | *lenP = len; | |
5862 | return (retval); | |
041ff4dd | 5863 | } |
252b5132 | 5864 | \f |
041ff4dd | 5865 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5866 | |
041ff4dd | 5867 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5868 | |
041ff4dd NC |
5869 | Out: 1 if input_line_pointer->end-of-line. */ |
5870 | ||
5871 | int | |
39e6acbd | 5872 | is_it_end_of_statement (void) |
252b5132 RH |
5873 | { |
5874 | SKIP_WHITESPACE (); | |
5875 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5876 | } |
252b5132 | 5877 | |
041ff4dd | 5878 | void |
39e6acbd | 5879 | equals (char *sym_name, int reassign) |
252b5132 | 5880 | { |
252b5132 | 5881 | char *stop = NULL; |
fb25138b | 5882 | char stopc = 0; |
252b5132 RH |
5883 | |
5884 | input_line_pointer++; | |
5885 | if (*input_line_pointer == '=') | |
5886 | input_line_pointer++; | |
9497f5ac NC |
5887 | if (reassign < 0 && *input_line_pointer == '=') |
5888 | input_line_pointer++; | |
252b5132 RH |
5889 | |
5890 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5891 | input_line_pointer++; | |
5892 | ||
5893 | if (flag_mri) | |
5894 | stop = mri_comment_field (&stopc); | |
5895 | ||
9497f5ac | 5896 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5897 | |
5898 | if (flag_mri) | |
31d20a21 AM |
5899 | { |
5900 | demand_empty_rest_of_line (); | |
5901 | mri_comment_end (stop, stopc); | |
5902 | } | |
041ff4dd | 5903 | } |
252b5132 | 5904 | |
7e005732 NC |
5905 | /* .incbin -- include a file verbatim at the current location. */ |
5906 | ||
5907 | void | |
39e6acbd | 5908 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5909 | { |
5910 | FILE * binfile; | |
5911 | char * path; | |
5912 | char * filename; | |
5913 | char * binfrag; | |
5914 | long skip = 0; | |
5915 | long count = 0; | |
5916 | long bytes; | |
5917 | int len; | |
5918 | ||
5919 | #ifdef md_flush_pending_output | |
5920 | md_flush_pending_output (); | |
5921 | #endif | |
5922 | ||
cc3f603a JM |
5923 | #ifdef md_cons_align |
5924 | md_cons_align (1); | |
5925 | #endif | |
5926 | ||
7e005732 NC |
5927 | SKIP_WHITESPACE (); |
5928 | filename = demand_copy_string (& len); | |
5929 | if (filename == NULL) | |
5930 | return; | |
5931 | ||
5932 | SKIP_WHITESPACE (); | |
5933 | ||
5934 | /* Look for optional skip and count. */ | |
5935 | if (* input_line_pointer == ',') | |
5936 | { | |
5937 | ++ input_line_pointer; | |
5938 | skip = get_absolute_expression (); | |
5939 | ||
5940 | SKIP_WHITESPACE (); | |
5941 | ||
5942 | if (* input_line_pointer == ',') | |
5943 | { | |
5944 | ++ input_line_pointer; | |
5945 | ||
5946 | count = get_absolute_expression (); | |
5947 | if (count == 0) | |
5948 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5949 | ||
5950 | SKIP_WHITESPACE (); | |
5951 | } | |
5952 | } | |
5953 | ||
5954 | demand_empty_rest_of_line (); | |
5955 | ||
5956 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5957 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5958 | if (binfile == NULL) |
5959 | { | |
5960 | int i; | |
5961 | ||
8860a416 | 5962 | path = XNEWVEC (char, (unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5963 | |
5964 | for (i = 0; i < include_dir_count; i++) | |
5965 | { | |
5966 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5967 | ||
f740e790 | 5968 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5969 | if (binfile != NULL) |
5970 | break; | |
5971 | } | |
5972 | ||
5973 | if (binfile == NULL) | |
5974 | as_bad (_("file not found: %s"), filename); | |
5975 | } | |
5976 | else | |
5977 | path = xstrdup (filename); | |
5978 | ||
5979 | if (binfile) | |
5980 | { | |
f740e790 NC |
5981 | long file_len; |
5982 | ||
7e005732 NC |
5983 | register_dependency (path); |
5984 | ||
5985 | /* Compute the length of the file. */ | |
5986 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5987 | { | |
5988 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5989 | goto done; | |
5990 | } | |
f740e790 | 5991 | file_len = ftell (binfile); |
7e005732 | 5992 | |
c556cc9c | 5993 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5994 | if (count == 0) |
c556cc9c | 5995 | count = file_len - skip; |
7e005732 | 5996 | |
c556cc9c | 5997 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5998 | { |
c556cc9c | 5999 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 6000 | skip, count, file_len); |
7e005732 NC |
6001 | goto done; |
6002 | } | |
6003 | ||
6004 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
6005 | { | |
6006 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
6007 | goto done; | |
6008 | } | |
6009 | ||
6010 | /* Allocate frag space and store file contents in it. */ | |
6011 | binfrag = frag_more (count); | |
6012 | ||
6013 | bytes = fread (binfrag, 1, count, binfile); | |
6014 | if (bytes < count) | |
6015 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
6016 | path, bytes, count); | |
6017 | } | |
6018 | done: | |
6019 | if (binfile != NULL) | |
6020 | fclose (binfile); | |
6021 | if (path) | |
6022 | free (path); | |
6023 | } | |
6024 | ||
041ff4dd | 6025 | /* .include -- include a file at this point. */ |
252b5132 | 6026 | |
041ff4dd | 6027 | void |
39e6acbd | 6028 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6029 | { |
252b5132 RH |
6030 | char *filename; |
6031 | int i; | |
1e9cc1c2 | 6032 | FILE *try_file; |
252b5132 RH |
6033 | char *path; |
6034 | ||
041ff4dd | 6035 | if (!flag_m68k_mri) |
252b5132 RH |
6036 | { |
6037 | filename = demand_copy_string (&i); | |
6038 | if (filename == NULL) | |
6039 | { | |
6040 | /* demand_copy_string has already printed an error and | |
d6415f6c | 6041 | called ignore_rest_of_line. */ |
252b5132 RH |
6042 | return; |
6043 | } | |
6044 | } | |
6045 | else | |
6046 | { | |
6047 | SKIP_WHITESPACE (); | |
6048 | i = 0; | |
041ff4dd | 6049 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
6050 | && *input_line_pointer != ' ' |
6051 | && *input_line_pointer != '\t') | |
6052 | { | |
6053 | obstack_1grow (¬es, *input_line_pointer); | |
6054 | ++input_line_pointer; | |
6055 | ++i; | |
6056 | } | |
f0e652b4 | 6057 | |
252b5132 | 6058 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 6059 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 6060 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
6061 | ++input_line_pointer; |
6062 | } | |
f0e652b4 | 6063 | |
252b5132 | 6064 | demand_empty_rest_of_line (); |
8860a416 TS |
6065 | path = XNEWVEC (char, (unsigned long) i |
6066 | + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 6067 | |
252b5132 RH |
6068 | for (i = 0; i < include_dir_count; i++) |
6069 | { | |
6070 | strcpy (path, include_dirs[i]); | |
6071 | strcat (path, "/"); | |
6072 | strcat (path, filename); | |
1e9cc1c2 | 6073 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 6074 | { |
1e9cc1c2 | 6075 | fclose (try_file); |
252b5132 RH |
6076 | goto gotit; |
6077 | } | |
6078 | } | |
f0e652b4 | 6079 | |
252b5132 RH |
6080 | free (path); |
6081 | path = filename; | |
6082 | gotit: | |
041ff4dd | 6083 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 6084 | register_dependency (path); |
9f10757c | 6085 | input_scrub_insert_file (path); |
041ff4dd | 6086 | } |
252b5132 | 6087 | |
041ff4dd | 6088 | void |
39e6acbd | 6089 | add_include_dir (char *path) |
252b5132 RH |
6090 | { |
6091 | int i; | |
6092 | ||
6093 | if (include_dir_count == 0) | |
6094 | { | |
e0471c16 | 6095 | include_dirs = XNEWVEC (const char *, 2); |
041ff4dd | 6096 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
6097 | include_dir_count = 2; |
6098 | } | |
6099 | else | |
6100 | { | |
6101 | include_dir_count++; | |
e0471c16 TS |
6102 | include_dirs = XRESIZEVEC (const char *, include_dirs, |
6103 | include_dir_count); | |
252b5132 RH |
6104 | } |
6105 | ||
041ff4dd | 6106 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
6107 | |
6108 | i = strlen (path); | |
6109 | if (i > include_dir_maxlen) | |
6110 | include_dir_maxlen = i; | |
041ff4dd | 6111 | } |
252b5132 RH |
6112 | \f |
6113 | /* Output debugging information to denote the source file. */ | |
6114 | ||
6115 | static void | |
39e6acbd | 6116 | generate_file_debug (void) |
252b5132 RH |
6117 | { |
6118 | if (debug_type == DEBUG_STABS) | |
6119 | stabs_generate_asm_file (); | |
6120 | } | |
6121 | ||
6122 | /* Output line number debugging information for the current source line. */ | |
6123 | ||
6124 | void | |
39e6acbd | 6125 | generate_lineno_debug (void) |
252b5132 | 6126 | { |
252b5132 RH |
6127 | switch (debug_type) |
6128 | { | |
6129 | case DEBUG_UNSPECIFIED: | |
6130 | case DEBUG_NONE: | |
4dc7ead9 | 6131 | case DEBUG_DWARF: |
252b5132 RH |
6132 | break; |
6133 | case DEBUG_STABS: | |
6134 | stabs_generate_asm_lineno (); | |
6135 | break; | |
6136 | case DEBUG_ECOFF: | |
6137 | ecoff_generate_asm_lineno (); | |
6138 | break; | |
252b5132 | 6139 | case DEBUG_DWARF2: |
4dc7ead9 RH |
6140 | /* ??? We could here indicate to dwarf2dbg.c that something |
6141 | has changed. However, since there is additional backend | |
6142 | support that is required (calling dwarf2_emit_insn), we | |
6143 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
6144 | break; |
6145 | } | |
6146 | } | |
6147 | ||
6148 | /* Output debugging information to mark a function entry point or end point. | |
6149 | END_P is zero for .func, and non-zero for .endfunc. */ | |
6150 | ||
6151 | void | |
39e6acbd | 6152 | s_func (int end_p) |
252b5132 RH |
6153 | { |
6154 | do_s_func (end_p, NULL); | |
6155 | } | |
6156 | ||
6157 | /* Subroutine of s_func so targets can choose a different default prefix. | |
6158 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
6159 | ||
87c245cc | 6160 | static void |
39e6acbd | 6161 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
6162 | { |
6163 | /* Record the current function so that we can issue an error message for | |
6164 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
6165 | arguments. */ | |
6166 | static char *current_name; | |
6167 | static char *current_label; | |
6168 | ||
6169 | if (end_p) | |
6170 | { | |
6171 | if (current_name == NULL) | |
6172 | { | |
6173 | as_bad (_("missing .func")); | |
6174 | ignore_rest_of_line (); | |
6175 | return; | |
6176 | } | |
6177 | ||
6178 | if (debug_type == DEBUG_STABS) | |
6179 | stabs_generate_asm_endfunc (current_name, current_label); | |
6180 | ||
6181 | current_name = current_label = NULL; | |
6182 | } | |
6183 | else /* ! end_p */ | |
6184 | { | |
041ff4dd NC |
6185 | char *name, *label; |
6186 | char delim1, delim2; | |
252b5132 RH |
6187 | |
6188 | if (current_name != NULL) | |
6189 | { | |
6190 | as_bad (_(".endfunc missing for previous .func")); | |
6191 | ignore_rest_of_line (); | |
6192 | return; | |
6193 | } | |
6194 | ||
d02603dc | 6195 | delim1 = get_symbol_name (& name); |
252b5132 RH |
6196 | name = xstrdup (name); |
6197 | *input_line_pointer = delim1; | |
d02603dc | 6198 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
6199 | if (*input_line_pointer != ',') |
6200 | { | |
6201 | if (default_prefix) | |
05f4ab67 AM |
6202 | { |
6203 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
6204 | as_fatal ("%s", xstrerror (errno)); | |
6205 | } | |
252b5132 RH |
6206 | else |
6207 | { | |
7be1c489 | 6208 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
6209 | /* Missing entry point, use function's name with the leading |
6210 | char prepended. */ | |
6211 | if (leading_char) | |
05f4ab67 AM |
6212 | { |
6213 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
6214 | as_fatal ("%s", xstrerror (errno)); | |
6215 | } | |
252b5132 RH |
6216 | else |
6217 | label = name; | |
6218 | } | |
6219 | } | |
6220 | else | |
6221 | { | |
6222 | ++input_line_pointer; | |
6223 | SKIP_WHITESPACE (); | |
d02603dc | 6224 | delim2 = get_symbol_name (& label); |
252b5132 | 6225 | label = xstrdup (label); |
d02603dc | 6226 | restore_line_pointer (delim2); |
252b5132 RH |
6227 | } |
6228 | ||
6229 | if (debug_type == DEBUG_STABS) | |
6230 | stabs_generate_asm_func (name, label); | |
6231 | ||
6232 | current_name = name; | |
6233 | current_label = label; | |
6234 | } | |
6235 | ||
6236 | demand_empty_rest_of_line (); | |
6237 | } | |
6238 | \f | |
fa94de6b RM |
6239 | #ifdef HANDLE_BUNDLE |
6240 | ||
6241 | void | |
6242 | s_bundle_align_mode (int arg ATTRIBUTE_UNUSED) | |
6243 | { | |
6244 | unsigned int align = get_absolute_expression (); | |
6245 | SKIP_WHITESPACE (); | |
6246 | demand_empty_rest_of_line (); | |
6247 | ||
6248 | if (align > (unsigned int) TC_ALIGN_LIMIT) | |
6249 | as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"), | |
6250 | (unsigned int) TC_ALIGN_LIMIT); | |
6251 | ||
6252 | if (bundle_lock_frag != NULL) | |
6253 | { | |
6254 | as_bad (_("cannot change .bundle_align_mode inside .bundle_lock")); | |
6255 | return; | |
6256 | } | |
6257 | ||
6258 | bundle_align_p2 = align; | |
6259 | } | |
6260 | ||
6261 | void | |
6262 | s_bundle_lock (int arg ATTRIBUTE_UNUSED) | |
6263 | { | |
6264 | demand_empty_rest_of_line (); | |
6265 | ||
6266 | if (bundle_align_p2 == 0) | |
6267 | { | |
6268 | as_bad (_(".bundle_lock is meaningless without .bundle_align_mode")); | |
6269 | return; | |
6270 | } | |
6271 | ||
d416e51d | 6272 | if (bundle_lock_depth == 0) |
fa94de6b | 6273 | { |
d416e51d RM |
6274 | bundle_lock_frchain = frchain_now; |
6275 | bundle_lock_frag = start_bundle (); | |
fa94de6b | 6276 | } |
d416e51d | 6277 | ++bundle_lock_depth; |
fa94de6b RM |
6278 | } |
6279 | ||
6280 | void | |
6281 | s_bundle_unlock (int arg ATTRIBUTE_UNUSED) | |
6282 | { | |
6283 | unsigned int size; | |
6284 | ||
6285 | demand_empty_rest_of_line (); | |
6286 | ||
6287 | if (bundle_lock_frag == NULL) | |
6288 | { | |
6289 | as_bad (_(".bundle_unlock without preceding .bundle_lock")); | |
6290 | return; | |
6291 | } | |
6292 | ||
6293 | gas_assert (bundle_align_p2 > 0); | |
6294 | ||
d416e51d RM |
6295 | gas_assert (bundle_lock_depth > 0); |
6296 | if (--bundle_lock_depth > 0) | |
6297 | return; | |
6298 | ||
fa94de6b RM |
6299 | size = pending_bundle_size (bundle_lock_frag); |
6300 | ||
e54e9ac5 AM |
6301 | if (size > 1U << bundle_align_p2) |
6302 | as_bad (_(".bundle_lock sequence is %u bytes, " | |
6303 | "but bundle size is only %u bytes"), | |
6304 | size, 1u << bundle_align_p2); | |
fa94de6b RM |
6305 | else |
6306 | finish_bundle (bundle_lock_frag, size); | |
6307 | ||
6308 | bundle_lock_frag = NULL; | |
6309 | bundle_lock_frchain = NULL; | |
6310 | } | |
6311 | ||
6312 | #endif /* HANDLE_BUNDLE */ | |
6313 | \f | |
041ff4dd | 6314 | void |
39e6acbd | 6315 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6316 | { |
40a4d956 | 6317 | ignore_rest_of_line (); |
252b5132 RH |
6318 | } |
6319 | ||
252b5132 | 6320 | void |
39e6acbd | 6321 | read_print_statistics (FILE *file) |
252b5132 RH |
6322 | { |
6323 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
6324 | } | |
6325 | ||
041ff4dd NC |
6326 | /* Inserts the given line into the input stream. |
6327 | ||
9f10757c TW |
6328 | This call avoids macro/conditionals nesting checking, since the contents of |
6329 | the line are assumed to replace the contents of a line already scanned. | |
6330 | ||
47eebc20 | 6331 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
6332 | called by md_start_line_hook(). The given line is assumed to already be |
6333 | properly scrubbed. */ | |
6334 | ||
6335 | void | |
39e6acbd | 6336 | input_scrub_insert_line (const char *line) |
9f10757c TW |
6337 | { |
6338 | sb newline; | |
d2ae702c L |
6339 | size_t len = strlen (line); |
6340 | sb_build (&newline, len); | |
6341 | sb_add_buffer (&newline, line, len); | |
9f10757c TW |
6342 | input_scrub_include_sb (&newline, input_line_pointer, 0); |
6343 | sb_kill (&newline); | |
6344 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6345 | } | |
6346 | ||
6347 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 6348 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
6349 | |
6350 | void | |
39e6acbd | 6351 | input_scrub_insert_file (char *path) |
9f10757c TW |
6352 | { |
6353 | input_scrub_include_file (path, input_line_pointer); | |
6354 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6355 | } | |
40a4d956 JB |
6356 | |
6357 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
6358 | ||
6359 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
6360 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
6361 | #endif | |
6362 | ||
6363 | static char * | |
7592cfd7 NC |
6364 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
6365 | int in_macro) | |
40a4d956 JB |
6366 | { |
6367 | char inquote = '\0'; | |
6368 | int inescape = 0; | |
6369 | ||
6370 | while (!is_end_of_line[(unsigned char) *s] | |
6371 | || (inquote && !ISCNTRL (*s)) | |
6372 | || (inquote == '\'' && flag_mri) | |
6373 | #ifdef TC_EOL_IN_INSN | |
6374 | || (insn && TC_EOL_IN_INSN (s)) | |
6375 | #endif | |
7592cfd7 NC |
6376 | /* PR 6926: When we are parsing the body of a macro the sequence |
6377 | \@ is special - it refers to the invocation count. If the @ | |
6378 | character happens to be registered as a line-separator character | |
6379 | by the target, then the is_end_of_line[] test above will have | |
6380 | returned true, but we need to ignore the line separating | |
6381 | semantics in this particular case. */ | |
6382 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
6383 | ) |
6384 | { | |
6385 | if (mri_string && *s == '\'') | |
6386 | inquote ^= *s; | |
6387 | else if (inescape) | |
6388 | inescape = 0; | |
6389 | else if (*s == '\\') | |
6390 | inescape = 1; | |
6391 | else if (!inquote | |
6392 | ? *s == '"' | |
6393 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
6394 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
6395 | #endif | |
6396 | : *s == inquote) | |
6397 | inquote ^= *s; | |
6398 | ++s; | |
6399 | } | |
6400 | if (inquote) | |
6401 | as_warn (_("missing closing `%c'"), inquote); | |
e74211b6 | 6402 | if (inescape && !ignore_input ()) |
40a4d956 JB |
6403 | as_warn (_("stray `\\'")); |
6404 | return s; | |
6405 | } | |
6406 | ||
6407 | char * | |
6408 | find_end_of_line (char *s, int mri_string) | |
6409 | { | |
7592cfd7 | 6410 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 6411 | } |
1181551e NC |
6412 | |
6413 | static char *saved_ilp = NULL; | |
6414 | static char *saved_limit; | |
6415 | ||
6416 | /* Use BUF as a temporary input pointer for calling other functions in this | |
6417 | file. BUF must be a C string, so that its end can be found by strlen. | |
6418 | Also sets the buffer_limit variable (local to this file) so that buffer | |
6419 | overruns should not occur. Saves the current input line pointer so that | |
6420 | it can be restored by calling restore_ilp(). | |
6421 | ||
6422 | Does not support recursion. | |
6423 | ||
6424 | FIXME: This function is currently only used by stabs.c but that | |
6425 | should be extended to other files in the gas source directory. */ | |
6426 | ||
6427 | void | |
6428 | temp_ilp (char *buf) | |
6429 | { | |
6430 | gas_assert (saved_ilp == NULL); | |
6431 | gas_assert (buf != NULL); | |
6432 | ||
6433 | saved_ilp = input_line_pointer; | |
6434 | saved_limit = buffer_limit; | |
6435 | /* Prevent the assert in restore_ilp from triggering if | |
6436 | the input_line_pointer has not yet been initialised. */ | |
6437 | if (saved_ilp == NULL) | |
6438 | saved_limit = saved_ilp = (char *) ""; | |
6439 | ||
6440 | input_line_pointer = buf; | |
6441 | buffer_limit = buf + strlen (buf); | |
2469b3c5 | 6442 | input_from_string = TRUE; |
1181551e NC |
6443 | } |
6444 | ||
6445 | /* Restore a saved input line pointer. */ | |
6446 | ||
6447 | void | |
6448 | restore_ilp (void) | |
6449 | { | |
6450 | gas_assert (saved_ilp != NULL); | |
6451 | ||
6452 | input_line_pointer = saved_ilp; | |
6453 | buffer_limit = saved_limit; | |
2469b3c5 | 6454 | input_from_string = FALSE; |
1181551e NC |
6455 | |
6456 | saved_ilp = NULL; | |
6457 | } |