]>
Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
6f2750fe | 2 | Copyright (C) 1986-2016 Free Software Foundation, Inc. |
252b5132 | 3 | |
ec2655a6 | 4 | This file is part of GAS, the GNU Assembler. |
252b5132 | 5 | |
ec2655a6 NC |
6 | GAS is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
252b5132 | 10 | |
ec2655a6 NC |
11 | GAS is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
252b5132 | 15 | |
ec2655a6 NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
252b5132 | 20 | |
59c871b4 | 21 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
041ff4dd NC |
22 | But then, GNU isn't spozed to run on your machine anyway. |
23 | (RMS is so shortsighted sometimes.) */ | |
041ff4dd | 24 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 25 | |
252b5132 | 26 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 27 | grow when we do 4361 style flonums. */ |
252b5132 RH |
28 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
29 | ||
47eebc20 | 30 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
31 | Another group of these functions is in the expr.c module. */ |
32 | ||
252b5132 | 33 | #include "as.h" |
3882b010 | 34 | #include "safe-ctype.h" |
252b5132 RH |
35 | #include "subsegs.h" |
36 | #include "sb.h" | |
37 | #include "macro.h" | |
38 | #include "obstack.h" | |
252b5132 | 39 | #include "ecoff.h" |
54cfded0 | 40 | #include "dw2gencfi.h" |
7bfd842d | 41 | #include "wchar.h" |
252b5132 RH |
42 | |
43 | #ifndef TC_START_LABEL | |
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. */ |
252b5132 RH |
65 | |
66 | #if BITS_PER_CHAR != 8 | |
67 | /* The following table is indexed by[(char)] and will break if | |
68 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
69 | die horribly; | |
70 | #endif | |
71 | ||
72 | #ifndef LEX_AT | |
252b5132 RH |
73 | #define LEX_AT 0 |
74 | #endif | |
75 | ||
76 | #ifndef LEX_BR | |
77 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
78 | #define LEX_BR 0 | |
79 | #endif | |
80 | ||
81 | #ifndef LEX_PCT | |
82 | /* The Delta 68k assembler permits % inside label names. */ | |
83 | #define LEX_PCT 0 | |
84 | #endif | |
85 | ||
86 | #ifndef LEX_QM | |
87 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
88 | #define LEX_QM 0 | |
89 | #endif | |
90 | ||
58b5739a | 91 | #ifndef LEX_HASH |
800eeca4 JW |
92 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
93 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
94 | #define LEX_HASH 0 |
95 | #endif | |
96 | ||
252b5132 | 97 | #ifndef LEX_DOLLAR |
252b5132 RH |
98 | #define LEX_DOLLAR 3 |
99 | #endif | |
100 | ||
101 | #ifndef LEX_TILDE | |
102 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
103 | #define LEX_TILDE 0 | |
104 | #endif | |
105 | ||
041ff4dd | 106 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 107 | char lex_type[256] = { |
252b5132 RH |
108 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
109 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 110 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
111 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
112 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
113 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
114 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 115 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
116 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
117 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
118 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
124 | }; | |
125 | ||
041ff4dd | 126 | /* In: a character. |
d67ffd56 L |
127 | Out: 1 if this character ends a line. |
128 | 2 if this character is a line separator. */ | |
ef99799a | 129 | char is_end_of_line[256] = { |
252b5132 | 130 | #ifdef CR_EOL |
b75c0c92 | 131 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 132 | #else |
b75c0c92 | 133 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 134 | #endif |
b75c0c92 AM |
135 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
136 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 137 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 150 | }; |
252b5132 | 151 | |
a8a3b3b2 | 152 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
153 | char original_case_string[128]; |
154 | #endif | |
155 | ||
041ff4dd | 156 | /* Functions private to this file. */ |
252b5132 | 157 | |
041ff4dd NC |
158 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
159 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 160 | |
041ff4dd NC |
161 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
162 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
163 | internals manual. */ | |
252b5132 RH |
164 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
165 | ||
041ff4dd | 166 | /* Variables for handling include file directory table. */ |
252b5132 | 167 | |
041ff4dd NC |
168 | /* Table of pointers to directories to search for .include's. */ |
169 | char **include_dirs; | |
170 | ||
171 | /* How many are in the table. */ | |
172 | int include_dir_count; | |
173 | ||
174 | /* Length of longest in table. */ | |
175 | int include_dir_maxlen = 1; | |
252b5132 RH |
176 | |
177 | #ifndef WORKING_DOT_WORD | |
178 | struct broken_word *broken_words; | |
179 | int new_broken_words; | |
180 | #endif | |
181 | ||
182 | /* The current offset into the absolute section. We don't try to | |
183 | build frags in the absolute section, since no data can be stored | |
184 | there. We just keep track of the current offset. */ | |
185 | addressT abs_section_offset; | |
186 | ||
187 | /* If this line had an MRI style label, it is stored in this variable. | |
188 | This is used by some of the MRI pseudo-ops. */ | |
189 | symbolS *line_label; | |
190 | ||
191 | /* This global variable is used to support MRI common sections. We | |
192 | translate such sections into a common symbol. This variable is | |
193 | non-NULL when we are in an MRI common section. */ | |
194 | symbolS *mri_common_symbol; | |
195 | ||
196 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
197 | need to align to an even byte boundary unless the next pseudo-op is | |
198 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
199 | may be needed. */ | |
200 | static int mri_pending_align; | |
201 | ||
202 | #ifndef NO_LISTING | |
203 | #ifdef OBJ_ELF | |
204 | /* This variable is set to be non-zero if the next string we see might | |
205 | be the name of the source file in DWARF debugging information. See | |
206 | the comment in emit_expr for the format we look for. */ | |
207 | static int dwarf_file_string; | |
208 | #endif | |
209 | #endif | |
210 | ||
fa94de6b RM |
211 | /* If the target defines the md_frag_max_var hook then we know |
212 | enough to implement the .bundle_align_mode features. */ | |
213 | #ifdef md_frag_max_var | |
214 | # define HANDLE_BUNDLE | |
215 | #endif | |
216 | ||
217 | #ifdef HANDLE_BUNDLE | |
218 | /* .bundle_align_mode sets this. Normally it's zero. When nonzero, | |
219 | it's the exponent of the bundle size, and aligned instruction bundle | |
220 | mode is in effect. */ | |
221 | static unsigned int bundle_align_p2; | |
222 | ||
223 | /* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets | |
224 | bundle_lock_frag to frag_now and then starts a new frag with | |
225 | frag_align_code. At the same time, bundle_lock_frain gets frchain_now, | |
226 | so that .bundle_unlock can verify that we didn't change segments. | |
227 | .bundle_unlock resets both to NULL. If we detect a bundling violation, | |
228 | then we reset bundle_lock_frchain to NULL as an indicator that we've | |
229 | already diagnosed the error with as_bad and don't need a cascade of | |
230 | redundant errors, but bundle_lock_frag remains set to indicate that | |
231 | we are expecting to see .bundle_unlock. */ | |
232 | static fragS *bundle_lock_frag; | |
233 | static frchainS *bundle_lock_frchain; | |
d416e51d RM |
234 | |
235 | /* This is incremented by .bundle_lock and decremented by .bundle_unlock, | |
236 | to allow nesting. */ | |
237 | static unsigned int bundle_lock_depth; | |
fa94de6b RM |
238 | #endif |
239 | ||
87c245cc | 240 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd | 241 | static void s_align (int, int); |
caa32fe5 | 242 | static void s_altmacro (int); |
057f53c1 | 243 | static void s_bad_end (int); |
05e9452c | 244 | static void s_reloc (int); |
39e6acbd | 245 | static int hex_float (int, char *); |
39e6acbd KH |
246 | static segT get_known_segmented_expression (expressionS * expP); |
247 | static void pobegin (void); | |
39a45edc | 248 | static size_t get_non_macro_line_sb (sb *); |
39e6acbd | 249 | static void generate_file_debug (void); |
7592cfd7 | 250 | static char *_find_end_of_line (char *, int, int, int); |
252b5132 | 251 | \f |
252b5132 | 252 | void |
39e6acbd | 253 | read_begin (void) |
252b5132 RH |
254 | { |
255 | const char *p; | |
256 | ||
257 | pobegin (); | |
258 | obj_read_begin_hook (); | |
259 | ||
260 | /* Something close -- but not too close -- to a multiple of 1024. | |
261 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
262 | obstack_begin (¬es, chunksize); | |
263 | obstack_begin (&cond_obstack, chunksize); | |
264 | ||
2e6976a8 DG |
265 | #ifndef tc_line_separator_chars |
266 | #define tc_line_separator_chars line_separator_chars | |
267 | #endif | |
041ff4dd | 268 | /* Use machine dependent syntax. */ |
2e6976a8 | 269 | for (p = tc_line_separator_chars; *p; p++) |
d67ffd56 | 270 | is_end_of_line[(unsigned char) *p] = 2; |
041ff4dd | 271 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
272 | |
273 | if (flag_mri) | |
274 | lex_type['?'] = 3; | |
275 | } | |
276 | \f | |
cc1bc22a | 277 | #ifndef TC_ADDRESS_BYTES |
cc1bc22a AM |
278 | #define TC_ADDRESS_BYTES address_bytes |
279 | ||
280 | static inline int | |
281 | address_bytes (void) | |
282 | { | |
283 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
284 | contain an address. */ | |
285 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
286 | n |= n >> 1; | |
287 | n |= n >> 2; | |
288 | n += 1; | |
289 | return n; | |
290 | } | |
291 | #endif | |
cc1bc22a | 292 | |
041ff4dd | 293 | /* Set up pseudo-op tables. */ |
252b5132 RH |
294 | |
295 | static struct hash_control *po_hash; | |
296 | ||
ef99799a | 297 | static const pseudo_typeS potable[] = { |
252b5132 RH |
298 | {"abort", s_abort, 0}, |
299 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 300 | {"altmacro", s_altmacro, 1}, |
38a57ae7 NC |
301 | {"ascii", stringer, 8+0}, |
302 | {"asciz", stringer, 8+1}, | |
252b5132 RH |
303 | {"balign", s_align_bytes, 0}, |
304 | {"balignw", s_align_bytes, -2}, | |
305 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 306 | /* block */ |
fa94de6b RM |
307 | #ifdef HANDLE_BUNDLE |
308 | {"bundle_align_mode", s_bundle_align_mode, 0}, | |
309 | {"bundle_lock", s_bundle_lock, 0}, | |
310 | {"bundle_unlock", s_bundle_unlock, 0}, | |
311 | #endif | |
252b5132 RH |
312 | {"byte", cons, 1}, |
313 | {"comm", s_comm, 0}, | |
314 | {"common", s_mri_common, 0}, | |
315 | {"common.s", s_mri_common, 1}, | |
316 | {"data", s_data, 0}, | |
317 | {"dc", cons, 2}, | |
cc1bc22a AM |
318 | #ifdef TC_ADDRESS_BYTES |
319 | {"dc.a", cons, 0}, | |
320 | #endif | |
252b5132 RH |
321 | {"dc.b", cons, 1}, |
322 | {"dc.d", float_cons, 'd'}, | |
323 | {"dc.l", cons, 4}, | |
324 | {"dc.s", float_cons, 'f'}, | |
325 | {"dc.w", cons, 2}, | |
326 | {"dc.x", float_cons, 'x'}, | |
327 | {"dcb", s_space, 2}, | |
328 | {"dcb.b", s_space, 1}, | |
329 | {"dcb.d", s_float_space, 'd'}, | |
330 | {"dcb.l", s_space, 4}, | |
331 | {"dcb.s", s_float_space, 'f'}, | |
332 | {"dcb.w", s_space, 2}, | |
333 | {"dcb.x", s_float_space, 'x'}, | |
334 | {"ds", s_space, 2}, | |
335 | {"ds.b", s_space, 1}, | |
336 | {"ds.d", s_space, 8}, | |
337 | {"ds.l", s_space, 4}, | |
338 | {"ds.p", s_space, 12}, | |
339 | {"ds.s", s_space, 4}, | |
340 | {"ds.w", s_space, 2}, | |
341 | {"ds.x", s_space, 12}, | |
342 | {"debug", s_ignore, 0}, | |
343 | #ifdef S_SET_DESC | |
344 | {"desc", s_desc, 0}, | |
345 | #endif | |
041ff4dd | 346 | /* dim */ |
252b5132 | 347 | {"double", float_cons, 'd'}, |
041ff4dd NC |
348 | /* dsect */ |
349 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
350 | {"else", s_else, 0}, |
351 | {"elsec", s_else, 0}, | |
3fd9f047 | 352 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
353 | {"end", s_end, 0}, |
354 | {"endc", s_endif, 0}, | |
355 | {"endfunc", s_func, 1}, | |
356 | {"endif", s_endif, 0}, | |
057f53c1 JB |
357 | {"endm", s_bad_end, 0}, |
358 | {"endr", s_bad_end, 1}, | |
041ff4dd | 359 | /* endef */ |
252b5132 RH |
360 | {"equ", s_set, 0}, |
361 | {"equiv", s_set, 1}, | |
9497f5ac | 362 | {"eqv", s_set, -1}, |
252b5132 | 363 | {"err", s_err, 0}, |
d190d046 | 364 | {"error", s_errwarn, 1}, |
252b5132 | 365 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
366 | /* extend */ |
367 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 | 368 | {"appfile", s_app_file, 1}, |
93e914b2 | 369 | {"appline", s_app_line, 1}, |
252b5132 RH |
370 | {"fail", s_fail, 0}, |
371 | {"file", s_app_file, 0}, | |
372 | {"fill", s_fill, 0}, | |
373 | {"float", float_cons, 'f'}, | |
374 | {"format", s_ignore, 0}, | |
375 | {"func", s_func, 0}, | |
376 | {"global", s_globl, 0}, | |
377 | {"globl", s_globl, 0}, | |
378 | {"hword", cons, 2}, | |
379 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 380 | {"ifb", s_ifb, 1}, |
252b5132 RH |
381 | {"ifc", s_ifc, 0}, |
382 | {"ifdef", s_ifdef, 0}, | |
383 | {"ifeq", s_if, (int) O_eq}, | |
384 | {"ifeqs", s_ifeqs, 0}, | |
385 | {"ifge", s_if, (int) O_ge}, | |
386 | {"ifgt", s_if, (int) O_gt}, | |
387 | {"ifle", s_if, (int) O_le}, | |
388 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 389 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
390 | {"ifnc", s_ifc, 1}, |
391 | {"ifndef", s_ifdef, 1}, | |
392 | {"ifne", s_if, (int) O_ne}, | |
393 | {"ifnes", s_ifeqs, 1}, | |
394 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 395 | {"incbin", s_incbin, 0}, |
252b5132 RH |
396 | {"include", s_include, 0}, |
397 | {"int", cons, 4}, | |
398 | {"irp", s_irp, 0}, | |
399 | {"irep", s_irp, 0}, | |
400 | {"irpc", s_irp, 1}, | |
401 | {"irepc", s_irp, 1}, | |
402 | {"lcomm", s_lcomm, 0}, | |
c2069bb2 | 403 | {"lflags", s_ignore, 0}, /* Listing flags. */ |
93e914b2 | 404 | {"linefile", s_app_line, 0}, |
252b5132 | 405 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 406 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
407 | {"llen", listing_psize, 1}, |
408 | {"long", cons, 4}, | |
409 | {"lsym", s_lsym, 0}, | |
410 | {"macro", s_macro, 0}, | |
411 | {"mexit", s_mexit, 0}, | |
412 | {"mri", s_mri, 0}, | |
413 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
414 | {"name", s_ignore, 0}, | |
caa32fe5 | 415 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 416 | {"noformat", s_ignore, 0}, |
041ff4dd | 417 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
418 | {"nopage", listing_nopage, 0}, |
419 | {"octa", cons, 16}, | |
420 | {"offset", s_struct, 0}, | |
421 | {"org", s_org, 0}, | |
422 | {"p2align", s_align_ptwo, 0}, | |
423 | {"p2alignw", s_align_ptwo, -2}, | |
424 | {"p2alignl", s_align_ptwo, -4}, | |
425 | {"page", listing_eject, 0}, | |
426 | {"plen", listing_psize, 0}, | |
427 | {"print", s_print, 0}, | |
041ff4dd | 428 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
429 | {"purgem", s_purgem, 0}, |
430 | {"quad", cons, 8}, | |
05e9452c | 431 | {"reloc", s_reloc, 0}, |
252b5132 RH |
432 | {"rep", s_rept, 0}, |
433 | {"rept", s_rept, 0}, | |
434 | {"rva", s_rva, 4}, | |
041ff4dd NC |
435 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
436 | /* scl */ | |
437 | /* sect */ | |
252b5132 RH |
438 | {"set", s_set, 0}, |
439 | {"short", cons, 2}, | |
440 | {"single", float_cons, 'f'}, | |
041ff4dd | 441 | /* size */ |
252b5132 RH |
442 | {"space", s_space, 0}, |
443 | {"skip", s_space, 0}, | |
444 | {"sleb128", s_leb128, 1}, | |
445 | {"spc", s_ignore, 0}, | |
446 | {"stabd", s_stab, 'd'}, | |
447 | {"stabn", s_stab, 'n'}, | |
448 | {"stabs", s_stab, 's'}, | |
38a57ae7 NC |
449 | {"string", stringer, 8+1}, |
450 | {"string8", stringer, 8+1}, | |
451 | {"string16", stringer, 16+1}, | |
452 | {"string32", stringer, 32+1}, | |
453 | {"string64", stringer, 64+1}, | |
252b5132 | 454 | {"struct", s_struct, 0}, |
041ff4dd | 455 | /* tag */ |
252b5132 RH |
456 | {"text", s_text, 0}, |
457 | ||
458 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
459 | won't be able to use it for a while -- probably a year or more. | |
460 | But once this has been released, check with gcc maintainers | |
461 | before deleting it or even changing the spelling. */ | |
462 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
463 | /* If we're folding case -- done for some targets, not necessarily | |
464 | all -- the above string in an input file will be converted to | |
465 | this one. Match it either way... */ | |
466 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
467 | ||
041ff4dd | 468 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 469 | {"ttl", listing_title, 0}, |
041ff4dd | 470 | /* type */ |
252b5132 | 471 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
472 | /* use */ |
473 | /* val */ | |
252b5132 RH |
474 | {"xcom", s_comm, 0}, |
475 | {"xdef", s_globl, 0}, | |
476 | {"xref", s_ignore, 0}, | |
477 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 478 | {"warning", s_errwarn, 0}, |
06e77878 | 479 | {"weakref", s_weakref, 0}, |
252b5132 RH |
480 | {"word", cons, 2}, |
481 | {"zero", s_space, 0}, | |
041ff4dd | 482 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
483 | }; |
484 | ||
87c245cc BE |
485 | static offsetT |
486 | get_absolute_expr (expressionS *exp) | |
487 | { | |
9497f5ac | 488 | expression_and_evaluate (exp); |
9136aa49 | 489 | |
87c245cc BE |
490 | if (exp->X_op != O_constant) |
491 | { | |
492 | if (exp->X_op != O_absent) | |
493 | as_bad (_("bad or irreducible absolute expression")); | |
494 | exp->X_add_number = 0; | |
495 | } | |
496 | return exp->X_add_number; | |
497 | } | |
498 | ||
499 | offsetT | |
500 | get_absolute_expression (void) | |
501 | { | |
502 | expressionS exp; | |
503 | ||
504 | return get_absolute_expr (&exp); | |
505 | } | |
506 | ||
252b5132 RH |
507 | static int pop_override_ok = 0; |
508 | static const char *pop_table_name; | |
509 | ||
510 | void | |
39e6acbd | 511 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
512 | { |
513 | const char *errtxt; | |
514 | const pseudo_typeS *pop; | |
515 | for (pop = table; pop->poc_name; pop++) | |
516 | { | |
517 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
518 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
519 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
520 | errtxt); | |
521 | } | |
522 | } | |
523 | ||
524 | #ifndef md_pop_insert | |
525 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
526 | #endif | |
527 | ||
528 | #ifndef obj_pop_insert | |
529 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
530 | #endif | |
531 | ||
54cfded0 AM |
532 | #ifndef cfi_pop_insert |
533 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
534 | #endif | |
535 | ||
041ff4dd | 536 | static void |
39e6acbd | 537 | pobegin (void) |
252b5132 RH |
538 | { |
539 | po_hash = hash_new (); | |
540 | ||
041ff4dd | 541 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
542 | pop_table_name = "md"; |
543 | md_pop_insert (); | |
544 | ||
041ff4dd | 545 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
546 | pop_table_name = "obj"; |
547 | pop_override_ok = 1; | |
548 | obj_pop_insert (); | |
549 | ||
041ff4dd | 550 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
551 | pop_table_name = "standard"; |
552 | pop_insert (potable); | |
d6415f6c | 553 | |
d58a1929 | 554 | /* Now CFI ones. */ |
54cfded0 AM |
555 | pop_table_name = "cfi"; |
556 | pop_override_ok = 1; | |
557 | cfi_pop_insert (); | |
252b5132 RH |
558 | } |
559 | \f | |
e74211b6 | 560 | #define HANDLE_CONDITIONAL_ASSEMBLY(num_read) \ |
252b5132 RH |
561 | if (ignore_input ()) \ |
562 | { \ | |
e74211b6 JB |
563 | char *eol = find_end_of_line (input_line_pointer - (num_read), \ |
564 | flag_m68k_mri); \ | |
40a4d956 JB |
565 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
566 | && eol >= buffer_limit) \ | |
567 | ? buffer_limit \ | |
568 | : eol + 1; \ | |
252b5132 RH |
569 | continue; \ |
570 | } | |
571 | ||
252b5132 RH |
572 | /* This function is used when scrubbing the characters between #APP |
573 | and #NO_APP. */ | |
574 | ||
575 | static char *scrub_string; | |
576 | static char *scrub_string_end; | |
577 | ||
39a45edc AM |
578 | static size_t |
579 | scrub_from_string (char *buf, size_t buflen) | |
252b5132 | 580 | { |
39a45edc | 581 | size_t copy; |
2b47531b ILT |
582 | |
583 | copy = scrub_string_end - scrub_string; | |
584 | if (copy > buflen) | |
585 | copy = buflen; | |
586 | memcpy (buf, scrub_string, copy); | |
587 | scrub_string += copy; | |
588 | return copy; | |
252b5132 RH |
589 | } |
590 | ||
5e75c3ab JB |
591 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
592 | static int | |
593 | try_macro (char term, const char *line) | |
594 | { | |
595 | sb out; | |
596 | const char *err; | |
597 | macro_entry *macro; | |
598 | ||
599 | if (check_macro (line, &out, &err, ¯o)) | |
600 | { | |
601 | if (err != NULL) | |
602 | as_bad ("%s", err); | |
603 | *input_line_pointer++ = term; | |
604 | input_scrub_include_sb (&out, | |
605 | input_line_pointer, 1); | |
606 | sb_kill (&out); | |
607 | buffer_limit = | |
608 | input_scrub_next_buffer (&input_line_pointer); | |
609 | #ifdef md_macro_info | |
610 | md_macro_info (macro); | |
611 | #endif | |
612 | return 1; | |
613 | } | |
614 | return 0; | |
615 | } | |
616 | ||
fa94de6b RM |
617 | #ifdef HANDLE_BUNDLE |
618 | /* Start a new instruction bundle. Returns the rs_align_code frag that | |
619 | will be used to align the new bundle. */ | |
620 | static fragS * | |
621 | start_bundle (void) | |
622 | { | |
623 | fragS *frag = frag_now; | |
624 | ||
625 | frag_align_code (0, 0); | |
626 | ||
627 | while (frag->fr_type != rs_align_code) | |
628 | frag = frag->fr_next; | |
629 | ||
630 | gas_assert (frag != frag_now); | |
631 | ||
632 | return frag; | |
633 | } | |
634 | ||
635 | /* Calculate the maximum size after relaxation of the region starting | |
636 | at the given frag and extending through frag_now (which is unfinished). */ | |
637 | static unsigned int | |
638 | pending_bundle_size (fragS *frag) | |
639 | { | |
640 | unsigned int offset = frag->fr_fix; | |
641 | unsigned int size = 0; | |
642 | ||
643 | gas_assert (frag != frag_now); | |
644 | gas_assert (frag->fr_type == rs_align_code); | |
645 | ||
646 | while (frag != frag_now) | |
647 | { | |
648 | /* This should only happen in what will later become an error case. */ | |
649 | if (frag == NULL) | |
650 | return 0; | |
651 | ||
652 | size += frag->fr_fix; | |
653 | if (frag->fr_type == rs_machine_dependent) | |
654 | size += md_frag_max_var (frag); | |
655 | ||
656 | frag = frag->fr_next; | |
657 | } | |
658 | ||
659 | gas_assert (frag == frag_now); | |
660 | size += frag_now_fix (); | |
661 | if (frag->fr_type == rs_machine_dependent) | |
662 | size += md_frag_max_var (frag); | |
663 | ||
664 | gas_assert (size >= offset); | |
665 | ||
666 | return size - offset; | |
667 | } | |
668 | ||
669 | /* Finish off the frag created to ensure bundle alignment. */ | |
670 | static void | |
671 | finish_bundle (fragS *frag, unsigned int size) | |
672 | { | |
673 | gas_assert (bundle_align_p2 > 0); | |
674 | gas_assert (frag->fr_type == rs_align_code); | |
675 | ||
676 | if (size > 1) | |
677 | { | |
678 | /* If there is more than a single byte, then we need to set up the | |
679 | alignment frag. Otherwise we leave it at its initial state from | |
680 | calling frag_align_code (0, 0), so that it does nothing. */ | |
681 | frag->fr_offset = bundle_align_p2; | |
682 | frag->fr_subtype = size - 1; | |
683 | } | |
684 | ||
685 | /* We do this every time rather than just in s_bundle_align_mode | |
686 | so that we catch any affected section without needing hooks all | |
687 | over for all paths that do section changes. It's cheap enough. */ | |
9136aa49 DG |
688 | if (bundle_align_p2 > OCTETS_PER_BYTE_POWER) |
689 | record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER); | |
fa94de6b RM |
690 | } |
691 | ||
692 | /* Assemble one instruction. This takes care of the bundle features | |
693 | around calling md_assemble. */ | |
694 | static void | |
695 | assemble_one (char *line) | |
696 | { | |
8d3eaee6 | 697 | fragS *insn_start_frag = NULL; |
fa94de6b RM |
698 | |
699 | if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now) | |
700 | { | |
701 | as_bad (_("cannot change section or subsection inside .bundle_lock")); | |
702 | /* Clearing this serves as a marker that we have already complained. */ | |
703 | bundle_lock_frchain = NULL; | |
704 | } | |
705 | ||
706 | if (bundle_lock_frchain == NULL && bundle_align_p2 > 0) | |
707 | insn_start_frag = start_bundle (); | |
708 | ||
709 | md_assemble (line); | |
710 | ||
711 | if (bundle_lock_frchain != NULL) | |
712 | { | |
713 | /* Make sure this hasn't pushed the locked sequence | |
714 | past the bundle size. */ | |
715 | unsigned int bundle_size = pending_bundle_size (bundle_lock_frag); | |
716 | if (bundle_size > (1U << bundle_align_p2)) | |
717 | as_bad (_("\ | |
718 | .bundle_lock sequence at %u bytes but .bundle_align_mode limit is %u bytes"), | |
719 | bundle_size, 1U << bundle_align_p2); | |
720 | } | |
721 | else if (bundle_align_p2 > 0) | |
722 | { | |
723 | unsigned int insn_size = pending_bundle_size (insn_start_frag); | |
724 | ||
725 | if (insn_size > (1U << bundle_align_p2)) | |
726 | as_bad (_("\ | |
727 | single instruction is %u bytes long but .bundle_align_mode limit is %u"), | |
728 | (unsigned int) insn_size, 1U << bundle_align_p2); | |
729 | ||
730 | finish_bundle (insn_start_frag, insn_size); | |
731 | } | |
732 | } | |
733 | ||
734 | #else /* !HANDLE_BUNDLE */ | |
735 | ||
736 | # define assemble_one(line) md_assemble(line) | |
737 | ||
738 | #endif /* HANDLE_BUNDLE */ | |
739 | ||
9136aa49 DG |
740 | static bfd_boolean |
741 | in_bss (void) | |
742 | { | |
743 | flagword flags = bfd_get_section_flags (stdoutput, now_seg); | |
744 | ||
745 | return (flags & SEC_ALLOC) && !(flags & (SEC_LOAD | SEC_HAS_CONTENTS)); | |
746 | } | |
747 | ||
748 | /* Guts of .align directive: | |
749 | N is the power of two to which to align. A value of zero is accepted but | |
750 | ignored: the default alignment of the section will be at least this. | |
751 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
752 | LEN is the length of whatever FILL points to, if anything. If LEN is zero | |
753 | but FILL is not NULL then LEN is treated as if it were one. | |
754 | MAX is the maximum number of characters to skip when doing the alignment, | |
755 | or 0 if there is no maximum. */ | |
756 | ||
757 | static void | |
758 | do_align (unsigned int n, char *fill, unsigned int len, unsigned int max) | |
759 | { | |
760 | if (now_seg == absolute_section || in_bss ()) | |
761 | { | |
762 | if (fill != NULL) | |
763 | while (len-- > 0) | |
764 | if (*fill++ != '\0') | |
765 | { | |
766 | if (now_seg == absolute_section) | |
767 | as_warn (_("ignoring fill value in absolute section")); | |
768 | else | |
769 | as_warn (_("ignoring fill value in section `%s'"), | |
770 | segment_name (now_seg)); | |
771 | break; | |
772 | } | |
773 | fill = NULL; | |
774 | len = 0; | |
775 | } | |
776 | ||
777 | #ifdef md_flush_pending_output | |
778 | md_flush_pending_output (); | |
779 | #endif | |
780 | ||
781 | #ifdef md_do_align | |
782 | md_do_align (n, fill, len, max, just_record_alignment); | |
783 | #endif | |
784 | ||
785 | /* Only make a frag if we HAVE to... */ | |
786 | if ((n > OCTETS_PER_BYTE_POWER) && !need_pass_2) | |
787 | { | |
788 | if (fill == NULL) | |
789 | { | |
790 | if (subseg_text_p (now_seg)) | |
791 | frag_align_code (n, max); | |
792 | else | |
793 | frag_align (n, 0, max); | |
794 | } | |
795 | else if (len <= 1) | |
796 | frag_align (n, *fill, max); | |
797 | else | |
798 | frag_align_pattern (n, fill, len, max); | |
799 | } | |
800 | ||
801 | #ifdef md_do_align | |
802 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL | |
803 | #endif | |
804 | ||
805 | if (n > OCTETS_PER_BYTE_POWER) | |
806 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); | |
807 | } | |
808 | ||
041ff4dd NC |
809 | /* We read the file, putting things into a web that represents what we |
810 | have been reading. */ | |
811 | void | |
39e6acbd | 812 | read_a_source_file (char *name) |
252b5132 | 813 | { |
d02603dc NC |
814 | char nul_char; |
815 | char next_char; | |
91d6fa6a NC |
816 | char *s; /* String of symbol, '\0' appended. */ |
817 | int temp; | |
252b5132 RH |
818 | pseudo_typeS *pop; |
819 | ||
4c400d5e AM |
820 | #ifdef WARN_COMMENTS |
821 | found_comment = 0; | |
822 | #endif | |
823 | ||
252b5132 RH |
824 | buffer = input_scrub_new_file (name); |
825 | ||
826 | listing_file (name); | |
827 | listing_newline (NULL); | |
828 | register_dependency (name); | |
829 | ||
830 | /* Generate debugging information before we've read anything in to denote | |
831 | this file as the "main" source file and not a subordinate one | |
832 | (e.g. N_SO vs N_SOL in stabs). */ | |
833 | generate_file_debug (); | |
834 | ||
835 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 836 | { /* We have another line to parse. */ |
5e75c3ab JB |
837 | #ifndef NO_LISTING |
838 | /* In order to avoid listing macro expansion lines with labels | |
839 | multiple times, keep track of which line was last issued. */ | |
840 | static char *last_eol; | |
841 | ||
842 | last_eol = NULL; | |
843 | #endif | |
252b5132 RH |
844 | while (input_line_pointer < buffer_limit) |
845 | { | |
f19df8f7 | 846 | bfd_boolean was_new_line; |
041ff4dd | 847 | /* We have more of this buffer to parse. */ |
252b5132 | 848 | |
041ff4dd NC |
849 | /* We now have input_line_pointer->1st char of next line. |
850 | If input_line_pointer [-1] == '\n' then we just | |
851 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
852 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
853 | if (was_new_line) | |
252b5132 | 854 | { |
4a826962 | 855 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
856 | #ifdef md_start_line_hook |
857 | md_start_line_hook (); | |
858 | #endif | |
252b5132 RH |
859 | if (input_line_pointer[-1] == '\n') |
860 | bump_line_counters (); | |
f19df8f7 | 861 | } |
252b5132 | 862 | |
f19df8f7 AM |
863 | #ifndef NO_LISTING |
864 | /* If listing is on, and we are expanding a macro, then give | |
865 | the listing code the contents of the expanded line. */ | |
866 | if (listing) | |
867 | { | |
868 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
869 | { | |
870 | /* Find the end of the current expanded macro line. */ | |
871 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
872 | ||
873 | if (s != last_eol) | |
874 | { | |
875 | char *copy; | |
876 | int len; | |
877 | ||
878 | last_eol = s; | |
879 | /* Copy it for safe keeping. Also give an indication of | |
880 | how much macro nesting is involved at this point. */ | |
881 | len = s - input_line_pointer; | |
882 | copy = (char *) xmalloc (len + macro_nest + 2); | |
883 | memset (copy, '>', macro_nest); | |
884 | copy[macro_nest] = ' '; | |
885 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
886 | copy[macro_nest + 1 + len] = '\0'; | |
887 | ||
888 | /* Install the line with the listing facility. */ | |
889 | listing_newline (copy); | |
890 | } | |
891 | } | |
892 | else | |
893 | listing_newline (NULL); | |
894 | } | |
895 | #endif | |
896 | if (was_new_line) | |
897 | { | |
252b5132 RH |
898 | line_label = NULL; |
899 | ||
abd63a32 | 900 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 | 901 | { |
d02603dc | 902 | next_char = * input_line_pointer; |
252b5132 RH |
903 | /* Text at the start of a line must be a label, we |
904 | run down and stick a colon in. */ | |
d02603dc | 905 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 906 | { |
d02603dc | 907 | char *line_start; |
252b5132 RH |
908 | int mri_line_macro; |
909 | ||
e74211b6 | 910 | HANDLE_CONDITIONAL_ASSEMBLY (0); |
252b5132 | 911 | |
d02603dc NC |
912 | nul_char = get_symbol_name (& line_start); |
913 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
252b5132 RH |
914 | |
915 | /* In MRI mode, the EQU and MACRO pseudoops must | |
916 | be handled specially. */ | |
917 | mri_line_macro = 0; | |
918 | if (flag_m68k_mri) | |
919 | { | |
920 | char *rest = input_line_pointer + 1; | |
921 | ||
922 | if (*rest == ':') | |
923 | ++rest; | |
924 | if (*rest == ' ' || *rest == '\t') | |
925 | ++rest; | |
926 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
927 | || strncasecmp (rest, "SET", 3) == 0) | |
928 | && (rest[3] == ' ' || rest[3] == '\t')) | |
929 | { | |
930 | input_line_pointer = rest + 3; | |
931 | equals (line_start, | |
932 | strncasecmp (rest, "SET", 3) == 0); | |
933 | continue; | |
934 | } | |
935 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
936 | && (rest[5] == ' ' | |
937 | || rest[5] == '\t' | |
938 | || is_end_of_line[(unsigned char) rest[5]])) | |
939 | mri_line_macro = 1; | |
940 | } | |
941 | ||
942 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
943 | pseudo-op specially: we don't want to put the |
944 | symbol in the symbol table. */ | |
041ff4dd | 945 | if (!mri_line_macro |
a25c045a | 946 | #ifdef TC_START_LABEL_WITHOUT_COLON |
2e57ce7b | 947 | && TC_START_LABEL_WITHOUT_COLON (nul_char, next_char) |
a25c045a | 948 | #endif |
ef99799a | 949 | ) |
252b5132 RH |
950 | line_label = colon (line_start); |
951 | else | |
952 | line_label = symbol_create (line_start, | |
953 | absolute_section, | |
954 | (valueT) 0, | |
955 | &zero_address_frag); | |
956 | ||
d02603dc NC |
957 | next_char = restore_line_pointer (nul_char); |
958 | if (next_char == ':') | |
252b5132 RH |
959 | input_line_pointer++; |
960 | } | |
961 | } | |
962 | } | |
963 | ||
47eebc20 | 964 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
965 | We expect a well-formed assembler statement. |
966 | A "symbol-name:" is a statement. | |
f0e652b4 | 967 | |
041ff4dd NC |
968 | Depending on what compiler is used, the order of these tests |
969 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
970 | Each test is independent of all other tests at the (top) |
971 | level. */ | |
972 | do | |
d02603dc NC |
973 | nul_char = next_char = *input_line_pointer++; |
974 | while (next_char == '\t' || next_char == ' ' || next_char == '\f'); | |
252b5132 | 975 | |
041ff4dd NC |
976 | /* C is the 1st significant character. |
977 | Input_line_pointer points after that character. */ | |
d02603dc | 978 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 979 | { |
d02603dc NC |
980 | char *rest; |
981 | ||
041ff4dd | 982 | /* Want user-defined label or pseudo/opcode. */ |
e74211b6 | 983 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 984 | |
d02603dc NC |
985 | --input_line_pointer; |
986 | nul_char = get_symbol_name (& s); /* name's delimiter. */ | |
987 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
988 | rest = input_line_pointer + (nul_char == '"' ? 2 : 1); | |
041ff4dd | 989 | |
d02603dc NC |
990 | /* NEXT_CHAR is character after symbol. |
991 | The end of symbol in the input line is now '\0'. | |
d6415f6c AM |
992 | S points to the beginning of the symbol. |
993 | [In case of pseudo-op, s->'.'.] | |
d02603dc | 994 | Input_line_pointer->'\0' where NUL_CHAR was. */ |
2e57ce7b | 995 | if (TC_START_LABEL (s, nul_char, next_char)) |
252b5132 RH |
996 | { |
997 | if (flag_m68k_mri) | |
998 | { | |
252b5132 | 999 | /* In MRI mode, \tsym: set 0 is permitted. */ |
252b5132 RH |
1000 | if (*rest == ':') |
1001 | ++rest; | |
f0e652b4 | 1002 | |
252b5132 RH |
1003 | if (*rest == ' ' || *rest == '\t') |
1004 | ++rest; | |
f0e652b4 | 1005 | |
252b5132 RH |
1006 | if ((strncasecmp (rest, "EQU", 3) == 0 |
1007 | || strncasecmp (rest, "SET", 3) == 0) | |
1008 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1009 | { | |
1010 | input_line_pointer = rest + 3; | |
1011 | equals (s, 1); | |
1012 | continue; | |
1013 | } | |
1014 | } | |
1015 | ||
041ff4dd | 1016 | line_label = colon (s); /* User-defined label. */ |
d02603dc NC |
1017 | restore_line_pointer (nul_char); |
1018 | ++ input_line_pointer; | |
a645d1eb L |
1019 | #ifdef tc_check_label |
1020 | tc_check_label (line_label); | |
1021 | #endif | |
041ff4dd | 1022 | /* Input_line_pointer->after ':'. */ |
252b5132 | 1023 | SKIP_WHITESPACE (); |
252b5132 | 1024 | } |
d02603dc NC |
1025 | else if ((next_char == '=' && *rest == '=') |
1026 | || ((next_char == ' ' || next_char == '\t') | |
1027 | && rest[0] == '=' | |
1028 | && rest[1] == '=')) | |
9497f5ac NC |
1029 | { |
1030 | equals (s, -1); | |
1031 | demand_empty_rest_of_line (); | |
1032 | } | |
d02603dc NC |
1033 | else if ((next_char == '=' |
1034 | || ((next_char == ' ' || next_char == '\t') | |
1035 | && *rest == '=')) | |
ee3c9814 | 1036 | #ifdef TC_EQUAL_IN_INSN |
d02603dc | 1037 | && !TC_EQUAL_IN_INSN (next_char, s) |
ee3c9814 | 1038 | #endif |
fa94de6b | 1039 | ) |
252b5132 RH |
1040 | { |
1041 | equals (s, 1); | |
1042 | demand_empty_rest_of_line (); | |
1043 | } | |
1044 | else | |
041ff4dd NC |
1045 | { |
1046 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
1047 | pop = NULL; |
1048 | ||
a8a3b3b2 | 1049 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
1050 | { |
1051 | char *s2 = s; | |
37d8bb27 NC |
1052 | |
1053 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
1054 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 1055 | |
252b5132 RH |
1056 | while (*s2) |
1057 | { | |
3882b010 | 1058 | *s2 = TOLOWER (*s2); |
252b5132 RH |
1059 | s2++; |
1060 | } | |
1061 | } | |
1062 | #endif | |
abd63a32 | 1063 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 1064 | { |
7be1c489 AM |
1065 | /* The MRI assembler uses pseudo-ops without |
1066 | a period. */ | |
252b5132 RH |
1067 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
1068 | if (pop != NULL && pop->poc_handler == NULL) | |
1069 | pop = NULL; | |
1070 | } | |
1071 | ||
1072 | if (pop != NULL | |
041ff4dd | 1073 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 1074 | { |
041ff4dd | 1075 | /* PSEUDO - OP. |
f0e652b4 | 1076 | |
d02603dc | 1077 | WARNING: next_char may be end-of-line. |
d6415f6c AM |
1078 | We lookup the pseudo-op table with s+1 because we |
1079 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
1080 | |
1081 | if (pop == NULL) | |
1082 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
1083 | if (pop && !pop->poc_handler) |
1084 | pop = NULL; | |
252b5132 RH |
1085 | |
1086 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
1087 | automatic alignment directive. What a hack |
1088 | this is. */ | |
252b5132 RH |
1089 | if (mri_pending_align |
1090 | && (pop == NULL | |
041ff4dd NC |
1091 | || !((pop->poc_handler == cons |
1092 | && pop->poc_val == 1) | |
1093 | || (pop->poc_handler == s_space | |
1094 | && pop->poc_val == 1) | |
252b5132 | 1095 | #ifdef tc_conditional_pseudoop |
041ff4dd | 1096 | || tc_conditional_pseudoop (pop) |
252b5132 | 1097 | #endif |
041ff4dd NC |
1098 | || pop->poc_handler == s_if |
1099 | || pop->poc_handler == s_ifdef | |
1100 | || pop->poc_handler == s_ifc | |
1101 | || pop->poc_handler == s_ifeqs | |
1102 | || pop->poc_handler == s_else | |
1103 | || pop->poc_handler == s_endif | |
1104 | || pop->poc_handler == s_globl | |
1105 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
1106 | { |
1107 | do_align (1, (char *) NULL, 0, 0); | |
1108 | mri_pending_align = 0; | |
f0e652b4 | 1109 | |
252b5132 RH |
1110 | if (line_label != NULL) |
1111 | { | |
2b47531b | 1112 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1113 | S_SET_VALUE (line_label, frag_now_fix ()); |
1114 | } | |
1115 | } | |
1116 | ||
041ff4dd | 1117 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
1118 | if (pop == NULL) |
1119 | { | |
5e75c3ab JB |
1120 | char *end = input_line_pointer; |
1121 | ||
d02603dc | 1122 | (void) restore_line_pointer (nul_char); |
252b5132 | 1123 | s_ignore (0); |
d02603dc | 1124 | nul_char = next_char = *--input_line_pointer; |
5e75c3ab | 1125 | *input_line_pointer = '\0'; |
d02603dc | 1126 | if (! macro_defined || ! try_macro (next_char, s)) |
5e75c3ab JB |
1127 | { |
1128 | *end = '\0'; | |
1129 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
d02603dc | 1130 | *input_line_pointer++ = nul_char; |
5e75c3ab | 1131 | } |
252b5132 RH |
1132 | continue; |
1133 | } | |
1134 | ||
041ff4dd | 1135 | /* Put it back for error messages etc. */ |
d02603dc | 1136 | next_char = restore_line_pointer (nul_char); |
252b5132 RH |
1137 | /* The following skip of whitespace is compulsory. |
1138 | A well shaped space is sometimes all that separates | |
041ff4dd | 1139 | keyword from operands. */ |
d02603dc | 1140 | if (next_char == ' ' || next_char == '\t') |
252b5132 | 1141 | input_line_pointer++; |
041ff4dd NC |
1142 | |
1143 | /* Input_line is restored. | |
d6415f6c AM |
1144 | Input_line_pointer->1st non-blank char |
1145 | after pseudo-operation. */ | |
252b5132 RH |
1146 | (*pop->poc_handler) (pop->poc_val); |
1147 | ||
1148 | /* If that was .end, just get out now. */ | |
1149 | if (pop->poc_handler == s_end) | |
1150 | goto quit; | |
1151 | } | |
1152 | else | |
1153 | { | |
d02603dc NC |
1154 | /* WARNING: next_char may be end-of-line. */ |
1155 | /* Also: input_line_pointer->`\0` where nul_char was. */ | |
1156 | (void) restore_line_pointer (nul_char); | |
7592cfd7 | 1157 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
d02603dc | 1158 | next_char = nul_char = *input_line_pointer; |
252b5132 RH |
1159 | *input_line_pointer = '\0'; |
1160 | ||
1161 | generate_lineno_debug (); | |
1162 | ||
d02603dc | 1163 | if (macro_defined && try_macro (next_char, s)) |
5e75c3ab | 1164 | continue; |
252b5132 RH |
1165 | |
1166 | if (mri_pending_align) | |
1167 | { | |
1168 | do_align (1, (char *) NULL, 0, 0); | |
1169 | mri_pending_align = 0; | |
1170 | if (line_label != NULL) | |
1171 | { | |
2b47531b | 1172 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1173 | S_SET_VALUE (line_label, frag_now_fix ()); |
1174 | } | |
1175 | } | |
1176 | ||
fa94de6b | 1177 | assemble_one (s); /* Assemble 1 instruction. */ |
252b5132 | 1178 | |
3be64886 NC |
1179 | /* PR 19630: The backend may have set ilp to NULL |
1180 | if it encountered a catastrophic failure. */ | |
1181 | if (input_line_pointer == NULL) | |
1182 | as_fatal (_("unable to continue with assembly.")); | |
1183 | ||
d02603dc | 1184 | *input_line_pointer++ = nul_char; |
252b5132 RH |
1185 | |
1186 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
1187 | this instruction. */ |
1188 | } | |
1189 | } | |
252b5132 | 1190 | continue; |
041ff4dd | 1191 | } |
252b5132 RH |
1192 | |
1193 | /* Empty statement? */ | |
d02603dc | 1194 | if (is_end_of_line[(unsigned char) next_char]) |
252b5132 RH |
1195 | continue; |
1196 | ||
d02603dc | 1197 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (next_char)) |
252b5132 | 1198 | { |
041ff4dd | 1199 | /* local label ("4:") */ |
252b5132 RH |
1200 | char *backup = input_line_pointer; |
1201 | ||
e74211b6 | 1202 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1203 | |
d02603dc NC |
1204 | temp = next_char - '0'; |
1205 | ||
1206 | if (nul_char == '"') | |
1207 | ++ input_line_pointer; | |
252b5132 | 1208 | |
041ff4dd | 1209 | /* Read the whole number. */ |
3882b010 | 1210 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
1211 | { |
1212 | temp = (temp * 10) + *input_line_pointer - '0'; | |
1213 | ++input_line_pointer; | |
041ff4dd | 1214 | } |
252b5132 RH |
1215 | |
1216 | if (LOCAL_LABELS_DOLLAR | |
1217 | && *input_line_pointer == '$' | |
1218 | && *(input_line_pointer + 1) == ':') | |
1219 | { | |
1220 | input_line_pointer += 2; | |
1221 | ||
1222 | if (dollar_label_defined (temp)) | |
1223 | { | |
1224 | as_fatal (_("label \"%d$\" redefined"), temp); | |
1225 | } | |
1226 | ||
1227 | define_dollar_label (temp); | |
1228 | colon (dollar_label_name (temp, 0)); | |
1229 | continue; | |
1230 | } | |
1231 | ||
1232 | if (LOCAL_LABELS_FB | |
1233 | && *input_line_pointer++ == ':') | |
1234 | { | |
1235 | fb_label_instance_inc (temp); | |
1236 | colon (fb_label_name (temp, 0)); | |
1237 | continue; | |
1238 | } | |
1239 | ||
1240 | input_line_pointer = backup; | |
d02603dc | 1241 | } |
252b5132 | 1242 | |
d02603dc | 1243 | if (next_char && strchr (line_comment_chars, next_char)) |
041ff4dd | 1244 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1245 | sb sbuf; |
252b5132 RH |
1246 | char *ends; |
1247 | char *new_buf; | |
1248 | char *new_tmp; | |
1249 | unsigned int new_length; | |
1250 | char *tmp_buf = 0; | |
1251 | ||
252b5132 RH |
1252 | s = input_line_pointer; |
1253 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1254 | { |
1255 | /* We ignore it. */ | |
1256 | ignore_rest_of_line (); | |
1257 | continue; | |
1258 | } | |
1259 | bump_line_counters (); | |
252b5132 RH |
1260 | s += 4; |
1261 | ||
1262 | ends = strstr (s, "#NO_APP\n"); | |
1263 | ||
1264 | if (!ends) | |
1265 | { | |
1266 | unsigned int tmp_len; | |
1267 | unsigned int num; | |
1268 | ||
1269 | /* The end of the #APP wasn't in this buffer. We | |
1270 | keep reading in buffers until we find the #NO_APP | |
1271 | that goes with this #APP There is one. The specs | |
47eebc20 | 1272 | guarantee it... */ |
252b5132 | 1273 | tmp_len = buffer_limit - s; |
1e9cc1c2 | 1274 | tmp_buf = (char *) xmalloc (tmp_len + 1); |
252b5132 RH |
1275 | memcpy (tmp_buf, s, tmp_len); |
1276 | do | |
1277 | { | |
1278 | new_tmp = input_scrub_next_buffer (&buffer); | |
1279 | if (!new_tmp) | |
1280 | break; | |
1281 | else | |
1282 | buffer_limit = new_tmp; | |
1283 | input_line_pointer = buffer; | |
1284 | ends = strstr (buffer, "#NO_APP\n"); | |
1285 | if (ends) | |
1286 | num = ends - buffer; | |
1287 | else | |
1288 | num = buffer_limit - buffer; | |
1289 | ||
1e9cc1c2 | 1290 | tmp_buf = (char *) xrealloc (tmp_buf, tmp_len + num); |
252b5132 RH |
1291 | memcpy (tmp_buf + tmp_len, buffer, num); |
1292 | tmp_len += num; | |
1293 | } | |
1294 | while (!ends); | |
1295 | ||
1296 | input_line_pointer = ends ? ends + 8 : NULL; | |
1297 | ||
1298 | s = tmp_buf; | |
1299 | ends = s + tmp_len; | |
1300 | ||
1301 | } | |
1302 | else | |
1303 | { | |
1304 | input_line_pointer = ends + 8; | |
1305 | } | |
1306 | ||
1307 | scrub_string = s; | |
1308 | scrub_string_end = ends; | |
1309 | ||
1310 | new_length = ends - s; | |
1311 | new_buf = (char *) xmalloc (new_length); | |
1312 | new_tmp = new_buf; | |
1313 | for (;;) | |
1314 | { | |
39a45edc AM |
1315 | size_t space; |
1316 | size_t size; | |
252b5132 RH |
1317 | |
1318 | space = (new_buf + new_length) - new_tmp; | |
1319 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1320 | ||
1321 | if (size < space) | |
1322 | { | |
64e55042 | 1323 | new_tmp[size] = 0; |
252b5132 RH |
1324 | break; |
1325 | } | |
1326 | ||
1e9cc1c2 | 1327 | new_buf = (char *) xrealloc (new_buf, new_length + 100); |
252b5132 RH |
1328 | new_tmp = new_buf + new_length; |
1329 | new_length += 100; | |
1330 | } | |
1331 | ||
1332 | if (tmp_buf) | |
1333 | free (tmp_buf); | |
f0e652b4 | 1334 | |
64e55042 HPN |
1335 | /* We've "scrubbed" input to the preferred format. In the |
1336 | process we may have consumed the whole of the remaining | |
1337 | file (and included files). We handle this formatted | |
1338 | input similar to that of macro expansion, letting | |
1339 | actual macro expansion (possibly nested) and other | |
1340 | input expansion work. Beware that in messages, line | |
1341 | numbers and possibly file names will be incorrect. */ | |
d2ae702c L |
1342 | new_length = strlen (new_buf); |
1343 | sb_build (&sbuf, new_length); | |
1344 | sb_add_buffer (&sbuf, new_buf, new_length); | |
64e55042 HPN |
1345 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); |
1346 | sb_kill (&sbuf); | |
1347 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1348 | free (new_buf); | |
252b5132 RH |
1349 | continue; |
1350 | } | |
1351 | ||
e74211b6 | 1352 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 RH |
1353 | |
1354 | #ifdef tc_unrecognized_line | |
d02603dc | 1355 | if (tc_unrecognized_line (next_char)) |
252b5132 RH |
1356 | continue; |
1357 | #endif | |
0e389e77 | 1358 | input_line_pointer--; |
601e61cd | 1359 | /* Report unknown char as error. */ |
c95b35a9 | 1360 | demand_empty_rest_of_line (); |
041ff4dd | 1361 | } |
041ff4dd | 1362 | } |
252b5132 RH |
1363 | |
1364 | quit: | |
04648e65 | 1365 | symbol_set_value_now (&dot_symbol); |
252b5132 | 1366 | |
fa94de6b RM |
1367 | #ifdef HANDLE_BUNDLE |
1368 | if (bundle_lock_frag != NULL) | |
1369 | { | |
1370 | as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line, | |
1371 | _(".bundle_lock with no matching .bundle_unlock")); | |
1372 | bundle_lock_frag = NULL; | |
1373 | bundle_lock_frchain = NULL; | |
d416e51d | 1374 | bundle_lock_depth = 0; |
fa94de6b RM |
1375 | } |
1376 | #endif | |
1377 | ||
252b5132 | 1378 | #ifdef md_cleanup |
041ff4dd | 1379 | md_cleanup (); |
252b5132 | 1380 | #endif |
041ff4dd NC |
1381 | /* Close the input file. */ |
1382 | input_scrub_close (); | |
4c400d5e AM |
1383 | #ifdef WARN_COMMENTS |
1384 | { | |
1385 | if (warn_comment && found_comment) | |
1386 | as_warn_where (found_comment_file, found_comment, | |
1387 | "first comment found here"); | |
1388 | } | |
1389 | #endif | |
252b5132 RH |
1390 | } |
1391 | ||
e5604d79 | 1392 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
956a6ba3 | 1393 | Take the sign of the number from SIGN rather than X_add_number. */ |
e5604d79 RS |
1394 | |
1395 | static void | |
956a6ba3 | 1396 | convert_to_bignum (expressionS *exp, int sign) |
e5604d79 RS |
1397 | { |
1398 | valueT value; | |
1399 | unsigned int i; | |
1400 | ||
1401 | value = exp->X_add_number; | |
1402 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1403 | { | |
1404 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1405 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1406 | } | |
1407 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1408 | the sign of the original value. */ | |
956a6ba3 JB |
1409 | if ((exp->X_add_number < 0) == !sign) |
1410 | generic_bignum[i++] = sign ? LITTLENUM_MASK : 0; | |
e5604d79 RS |
1411 | exp->X_op = O_big; |
1412 | exp->X_add_number = i; | |
1413 | } | |
1414 | ||
252b5132 RH |
1415 | /* For most MRI pseudo-ops, the line actually ends at the first |
1416 | nonquoted space. This function looks for that point, stuffs a null | |
1417 | in, and sets *STOPCP to the character that used to be there, and | |
1418 | returns the location. | |
1419 | ||
1420 | Until I hear otherwise, I am going to assume that this is only true | |
1421 | for the m68k MRI assembler. */ | |
1422 | ||
1423 | char * | |
39e6acbd | 1424 | mri_comment_field (char *stopcp) |
252b5132 | 1425 | { |
252b5132 | 1426 | char *s; |
041ff4dd | 1427 | #ifdef TC_M68K |
252b5132 RH |
1428 | int inquote = 0; |
1429 | ||
1430 | know (flag_m68k_mri); | |
1431 | ||
1432 | for (s = input_line_pointer; | |
041ff4dd | 1433 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1434 | || inquote); |
1435 | s++) | |
1436 | { | |
1437 | if (*s == '\'') | |
041ff4dd | 1438 | inquote = !inquote; |
252b5132 | 1439 | } |
252b5132 | 1440 | #else |
041ff4dd NC |
1441 | for (s = input_line_pointer; |
1442 | !is_end_of_line[(unsigned char) *s]; | |
1443 | s++) | |
252b5132 | 1444 | ; |
041ff4dd | 1445 | #endif |
252b5132 RH |
1446 | *stopcp = *s; |
1447 | *s = '\0'; | |
f0e652b4 | 1448 | |
252b5132 | 1449 | return s; |
252b5132 RH |
1450 | } |
1451 | ||
1452 | /* Skip to the end of an MRI comment field. */ | |
1453 | ||
1454 | void | |
39e6acbd | 1455 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1456 | { |
1457 | know (flag_mri); | |
1458 | ||
1459 | input_line_pointer = stop; | |
1460 | *stop = stopc; | |
041ff4dd | 1461 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1462 | ++input_line_pointer; |
1463 | } | |
1464 | ||
041ff4dd | 1465 | void |
39e6acbd | 1466 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1467 | { |
1468 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1469 | } | |
1470 | ||
252b5132 RH |
1471 | /* Handle the .align pseudo-op. A positive ARG is a default alignment |
1472 | (in bytes). A negative ARG is the negative of the length of the | |
1473 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1474 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1475 | #ifndef TC_ALIGN_LIMIT |
1476 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1477 | #endif | |
9ebd302d | 1478 | |
252b5132 | 1479 | static void |
9136aa49 | 1480 | s_align (signed int arg, int bytes_p) |
252b5132 | 1481 | { |
11ec4ba9 | 1482 | unsigned int align_limit = TC_ALIGN_LIMIT; |
9ebd302d | 1483 | unsigned int align; |
252b5132 | 1484 | char *stop = NULL; |
fb25138b | 1485 | char stopc = 0; |
252b5132 | 1486 | offsetT fill = 0; |
9136aa49 | 1487 | unsigned int max; |
252b5132 RH |
1488 | int fill_p; |
1489 | ||
1490 | if (flag_mri) | |
1491 | stop = mri_comment_field (&stopc); | |
1492 | ||
1493 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1494 | { | |
1495 | if (arg < 0) | |
1496 | align = 0; | |
1497 | else | |
041ff4dd | 1498 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1499 | } |
1500 | else | |
1501 | { | |
1502 | align = get_absolute_expression (); | |
1503 | SKIP_WHITESPACE (); | |
db2ed2e0 AM |
1504 | |
1505 | #ifdef TC_ALIGN_ZERO_IS_DEFAULT | |
1506 | if (arg > 0 && align == 0) | |
1507 | align = arg; | |
1508 | #endif | |
252b5132 RH |
1509 | } |
1510 | ||
1511 | if (bytes_p) | |
1512 | { | |
1513 | /* Convert to a power of 2. */ | |
1514 | if (align != 0) | |
1515 | { | |
1516 | unsigned int i; | |
1517 | ||
1518 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1519 | ; | |
1520 | if (align != 1) | |
0e389e77 | 1521 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1522 | |
252b5132 RH |
1523 | align = i; |
1524 | } | |
1525 | } | |
1526 | ||
b617dc20 | 1527 | if (align > align_limit) |
252b5132 | 1528 | { |
b617dc20 | 1529 | align = align_limit; |
0e389e77 | 1530 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1531 | } |
1532 | ||
1533 | if (*input_line_pointer != ',') | |
1534 | { | |
1535 | fill_p = 0; | |
1536 | max = 0; | |
1537 | } | |
1538 | else | |
1539 | { | |
1540 | ++input_line_pointer; | |
1541 | if (*input_line_pointer == ',') | |
1542 | fill_p = 0; | |
1543 | else | |
1544 | { | |
1545 | fill = get_absolute_expression (); | |
1546 | SKIP_WHITESPACE (); | |
1547 | fill_p = 1; | |
1548 | } | |
1549 | ||
1550 | if (*input_line_pointer != ',') | |
1551 | max = 0; | |
1552 | else | |
1553 | { | |
1554 | ++input_line_pointer; | |
1555 | max = get_absolute_expression (); | |
1556 | } | |
1557 | } | |
1558 | ||
041ff4dd | 1559 | if (!fill_p) |
252b5132 RH |
1560 | { |
1561 | if (arg < 0) | |
1562 | as_warn (_("expected fill pattern missing")); | |
1563 | do_align (align, (char *) NULL, 0, max); | |
1564 | } | |
1565 | else | |
1566 | { | |
9136aa49 | 1567 | unsigned int fill_len; |
252b5132 RH |
1568 | |
1569 | if (arg >= 0) | |
1570 | fill_len = 1; | |
1571 | else | |
041ff4dd | 1572 | fill_len = -arg; |
9136aa49 | 1573 | |
252b5132 RH |
1574 | if (fill_len <= 1) |
1575 | { | |
9136aa49 | 1576 | char fill_char = 0; |
252b5132 RH |
1577 | |
1578 | fill_char = fill; | |
1579 | do_align (align, &fill_char, fill_len, max); | |
1580 | } | |
1581 | else | |
1582 | { | |
1583 | char ab[16]; | |
1584 | ||
1585 | if ((size_t) fill_len > sizeof ab) | |
9136aa49 DG |
1586 | { |
1587 | as_warn (_("fill pattern too long, truncating to %u"), | |
1588 | (unsigned) sizeof ab); | |
1589 | fill_len = sizeof ab; | |
1590 | } | |
1591 | ||
252b5132 RH |
1592 | md_number_to_chars (ab, fill, fill_len); |
1593 | do_align (align, ab, fill_len, max); | |
1594 | } | |
1595 | } | |
1596 | ||
1597 | demand_empty_rest_of_line (); | |
1598 | ||
1599 | if (flag_mri) | |
1600 | mri_comment_end (stop, stopc); | |
1601 | } | |
1602 | ||
1603 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1604 | align to a 4 byte boundary. */ | |
1605 | ||
041ff4dd | 1606 | void |
39e6acbd | 1607 | s_align_bytes (int arg) |
252b5132 RH |
1608 | { |
1609 | s_align (arg, 1); | |
1610 | } | |
1611 | ||
1612 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1613 | to a 2**4 boundary. */ | |
1614 | ||
041ff4dd | 1615 | void |
39e6acbd | 1616 | s_align_ptwo (int arg) |
252b5132 RH |
1617 | { |
1618 | s_align (arg, 0); | |
1619 | } | |
1620 | ||
caa32fe5 NC |
1621 | /* Switch in and out of alternate macro mode. */ |
1622 | ||
b38ead21 | 1623 | static void |
caa32fe5 NC |
1624 | s_altmacro (int on) |
1625 | { | |
1626 | demand_empty_rest_of_line (); | |
1627 | macro_set_alternate (on); | |
1628 | } | |
1629 | ||
7bfd842d NC |
1630 | /* Read a symbol name from input_line_pointer. |
1631 | ||
1632 | Stores the symbol name in a buffer and returns a pointer to this buffer. | |
1633 | The buffer is xalloc'ed. It is the caller's responsibility to free | |
1634 | this buffer. | |
1635 | ||
1636 | The name is not left in the i_l_p buffer as it may need processing | |
1637 | to handle escape characters. | |
1638 | ||
1639 | Advances i_l_p to the next non-whitespace character. | |
1640 | ||
1641 | If a symbol name could not be read, the routine issues an error | |
1642 | messages, skips to the end of the line and returns NULL. */ | |
1643 | ||
69602580 | 1644 | char * |
7bfd842d NC |
1645 | read_symbol_name (void) |
1646 | { | |
1647 | char * name; | |
1648 | char * start; | |
1649 | char c; | |
1650 | ||
1651 | c = *input_line_pointer++; | |
1652 | ||
1653 | if (c == '"') | |
1654 | { | |
1655 | #define SYM_NAME_CHUNK_LEN 128 | |
1656 | ptrdiff_t len = SYM_NAME_CHUNK_LEN; | |
1657 | char * name_end; | |
1658 | unsigned int C; | |
1659 | ||
1660 | start = name = xmalloc (len + 1); | |
1661 | ||
1662 | name_end = name + SYM_NAME_CHUNK_LEN; | |
1663 | ||
1664 | while (is_a_char (C = next_char_of_string ())) | |
1665 | { | |
1666 | if (name >= name_end) | |
1667 | { | |
1668 | ptrdiff_t sofar; | |
1669 | ||
1670 | sofar = name - start; | |
1671 | len += SYM_NAME_CHUNK_LEN; | |
1672 | start = xrealloc (start, len + 1); | |
1673 | name_end = start + len; | |
1674 | name = start + sofar; | |
1675 | } | |
34bca508 | 1676 | |
7bfd842d NC |
1677 | *name++ = (char) C; |
1678 | } | |
1679 | *name = 0; | |
1680 | ||
1681 | /* Since quoted symbol names can contain non-ASCII characters, | |
1682 | check the string and warn if it cannot be recognised by the | |
1683 | current character set. */ | |
1684 | if (mbstowcs (NULL, name, len) == (size_t) -1) | |
1685 | as_warn (_("symbol name not recognised in the current locale")); | |
1686 | } | |
1687 | else if (is_name_beginner (c) || c == '\001') | |
1688 | { | |
1689 | ptrdiff_t len; | |
1690 | ||
1691 | name = input_line_pointer - 1; | |
1692 | ||
1693 | /* We accept \001 in a name in case this is | |
1694 | being called with a constructed string. */ | |
1695 | while (is_part_of_name (c = *input_line_pointer++) | |
1696 | || c == '\001') | |
1697 | ; | |
1698 | ||
1699 | len = (input_line_pointer - name) - 1; | |
1700 | start = xmalloc (len + 1); | |
1701 | ||
1702 | memcpy (start, name, len); | |
1703 | start[len] = 0; | |
1704 | ||
1705 | /* Skip a name ender char if one is present. */ | |
1706 | if (! is_name_ender (c)) | |
1707 | --input_line_pointer; | |
1708 | } | |
1709 | else | |
1710 | name = start = NULL; | |
1711 | ||
1712 | if (name == start) | |
1713 | { | |
1714 | as_bad (_("expected symbol name")); | |
1715 | ignore_rest_of_line (); | |
1716 | return NULL; | |
1717 | } | |
34bca508 | 1718 | |
7bfd842d NC |
1719 | SKIP_WHITESPACE (); |
1720 | ||
1721 | return start; | |
1722 | } | |
1723 | ||
1724 | ||
e13bab5a AM |
1725 | symbolS * |
1726 | s_comm_internal (int param, | |
1727 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1728 | { |
e13bab5a | 1729 | char *name; |
e13bab5a AM |
1730 | offsetT temp, size; |
1731 | symbolS *symbolP = NULL; | |
252b5132 | 1732 | char *stop = NULL; |
fb25138b | 1733 | char stopc = 0; |
e13bab5a | 1734 | expressionS exp; |
252b5132 RH |
1735 | |
1736 | if (flag_mri) | |
1737 | stop = mri_comment_field (&stopc); | |
1738 | ||
7bfd842d NC |
1739 | if ((name = read_symbol_name ()) == NULL) |
1740 | goto out; | |
f0e652b4 | 1741 | |
e13bab5a AM |
1742 | /* Accept an optional comma after the name. The comma used to be |
1743 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1744 | if (*input_line_pointer == ',') | |
1745 | input_line_pointer++; | |
1746 | ||
e13bab5a AM |
1747 | temp = get_absolute_expr (&exp); |
1748 | size = temp; | |
65879393 | 1749 | size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1750 | if (exp.X_op == O_absent) |
252b5132 | 1751 | { |
e13bab5a | 1752 | as_bad (_("missing size expression")); |
252b5132 | 1753 | ignore_rest_of_line (); |
e13bab5a | 1754 | goto out; |
252b5132 | 1755 | } |
e13bab5a | 1756 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1757 | { |
e13bab5a | 1758 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1759 | ignore_rest_of_line (); |
e13bab5a | 1760 | goto out; |
252b5132 | 1761 | } |
f0e652b4 | 1762 | |
252b5132 | 1763 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1764 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1765 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1766 | { |
92757bc9 JB |
1767 | if (!S_IS_VOLATILE (symbolP)) |
1768 | { | |
1769 | symbolP = NULL; | |
1770 | as_bad (_("symbol `%s' is already defined"), name); | |
92757bc9 JB |
1771 | ignore_rest_of_line (); |
1772 | goto out; | |
1773 | } | |
89cdfe57 | 1774 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1775 | S_SET_SEGMENT (symbolP, undefined_section); |
1776 | S_SET_VALUE (symbolP, 0); | |
1777 | symbol_set_frag (symbolP, &zero_address_frag); | |
1778 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1779 | } |
f0e652b4 | 1780 | |
e13bab5a AM |
1781 | size = S_GET_VALUE (symbolP); |
1782 | if (size == 0) | |
1783 | size = temp; | |
1784 | else if (size != temp) | |
1785 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1786 | name, (long) size, (long) temp); | |
1787 | ||
e13bab5a AM |
1788 | if (comm_parse_extra != NULL) |
1789 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1790 | else |
1791 | { | |
e13bab5a | 1792 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1793 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1794 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
e13bab5a | 1795 | } |
252b5132 RH |
1796 | |
1797 | demand_empty_rest_of_line (); | |
e13bab5a | 1798 | out: |
252b5132 RH |
1799 | if (flag_mri) |
1800 | mri_comment_end (stop, stopc); | |
7bfd842d NC |
1801 | if (name != NULL) |
1802 | free (name); | |
e13bab5a AM |
1803 | return symbolP; |
1804 | } | |
1805 | ||
1806 | void | |
1807 | s_comm (int ignore) | |
1808 | { | |
1809 | s_comm_internal (ignore, NULL); | |
1810 | } | |
252b5132 RH |
1811 | |
1812 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1813 | symbol with the appropriate name. We make s_space do the right | |
1814 | thing by increasing the size. */ | |
1815 | ||
1816 | void | |
39e6acbd | 1817 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1818 | { |
1819 | char *name; | |
1820 | char c; | |
1821 | char *alc = NULL; | |
1822 | symbolS *sym; | |
1823 | offsetT align; | |
1824 | char *stop = NULL; | |
fb25138b | 1825 | char stopc = 0; |
252b5132 | 1826 | |
041ff4dd | 1827 | if (!flag_mri) |
252b5132 RH |
1828 | { |
1829 | s_comm (0); | |
1830 | return; | |
1831 | } | |
1832 | ||
1833 | stop = mri_comment_field (&stopc); | |
1834 | ||
1835 | SKIP_WHITESPACE (); | |
1836 | ||
1837 | name = input_line_pointer; | |
3882b010 | 1838 | if (!ISDIGIT (*name)) |
d02603dc | 1839 | c = get_symbol_name (& name); |
252b5132 RH |
1840 | else |
1841 | { | |
1842 | do | |
1843 | { | |
1844 | ++input_line_pointer; | |
1845 | } | |
3882b010 | 1846 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1847 | |
252b5132 RH |
1848 | c = *input_line_pointer; |
1849 | *input_line_pointer = '\0'; | |
1850 | ||
1851 | if (line_label != NULL) | |
1852 | { | |
1853 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1854 | + (input_line_pointer - name) | |
1855 | + 1); | |
1856 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1857 | name = alc; | |
1858 | } | |
1859 | } | |
1860 | ||
1861 | sym = symbol_find_or_make (name); | |
d02603dc | 1862 | c = restore_line_pointer (c); |
252b5132 RH |
1863 | if (alc != NULL) |
1864 | free (alc); | |
1865 | ||
1866 | if (*input_line_pointer != ',') | |
1867 | align = 0; | |
1868 | else | |
1869 | { | |
1870 | ++input_line_pointer; | |
1871 | align = get_absolute_expression (); | |
1872 | } | |
1873 | ||
041ff4dd | 1874 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1875 | { |
0e389e77 | 1876 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1877 | ignore_rest_of_line (); |
1878 | mri_comment_end (stop, stopc); | |
1879 | return; | |
1880 | } | |
1881 | ||
1882 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1883 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1884 | mri_common_symbol = sym; |
1885 | ||
1886 | #ifdef S_SET_ALIGN | |
1887 | if (align != 0) | |
1888 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1889 | #else |
1890 | (void) align; | |
252b5132 RH |
1891 | #endif |
1892 | ||
1893 | if (line_label != NULL) | |
1894 | { | |
2b47531b ILT |
1895 | expressionS exp; |
1896 | exp.X_op = O_symbol; | |
1897 | exp.X_add_symbol = sym; | |
1898 | exp.X_add_number = 0; | |
1899 | symbol_set_value_expression (line_label, &exp); | |
1900 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1901 | S_SET_SEGMENT (line_label, expr_section); |
1902 | } | |
1903 | ||
1904 | /* FIXME: We just ignore the small argument, which distinguishes | |
1905 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1906 | ||
1907 | /* Ignore the type and hptype. */ | |
1908 | if (*input_line_pointer == ',') | |
1909 | input_line_pointer += 2; | |
1910 | if (*input_line_pointer == ',') | |
1911 | input_line_pointer += 2; | |
1912 | ||
1913 | demand_empty_rest_of_line (); | |
1914 | ||
1915 | mri_comment_end (stop, stopc); | |
1916 | } | |
1917 | ||
1918 | void | |
39e6acbd | 1919 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1920 | { |
1921 | segT section; | |
3d540e93 | 1922 | int temp; |
252b5132 RH |
1923 | |
1924 | temp = get_absolute_expression (); | |
1925 | if (flag_readonly_data_in_text) | |
1926 | { | |
1927 | section = text_section; | |
1928 | temp += 1000; | |
1929 | } | |
1930 | else | |
1931 | section = data_section; | |
1932 | ||
1933 | subseg_set (section, (subsegT) temp); | |
1934 | ||
252b5132 RH |
1935 | demand_empty_rest_of_line (); |
1936 | } | |
1937 | ||
1938 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1939 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1940 | file name. This default definition may be overridden by the object | |
1941 | or CPU specific pseudo-ops. This function is also the default | |
1942 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1943 | .file. */ | |
1944 | ||
ecb4347a | 1945 | void |
f17c130b | 1946 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1947 | { |
1948 | #ifdef LISTING | |
1949 | if (listing) | |
1950 | listing_source_file (file); | |
1951 | #endif | |
1952 | register_dependency (file); | |
1953 | #ifdef obj_app_file | |
c04f5787 | 1954 | obj_app_file (file, appfile); |
ecb4347a DJ |
1955 | #endif |
1956 | } | |
1957 | ||
041ff4dd | 1958 | void |
39e6acbd | 1959 | s_app_file (int appfile) |
252b5132 | 1960 | { |
3d540e93 | 1961 | char *s; |
252b5132 RH |
1962 | int length; |
1963 | ||
041ff4dd | 1964 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1965 | if ((s = demand_copy_string (&length)) != 0) |
1966 | { | |
252b5132 | 1967 | int may_omit |
93e914b2 | 1968 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
1969 | |
1970 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1971 | backquote. */ |
252b5132 RH |
1972 | if (flag_m68k_mri |
1973 | && *input_line_pointer == '\'' | |
1974 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1975 | ++input_line_pointer; | |
1976 | ||
1977 | demand_empty_rest_of_line (); | |
041ff4dd | 1978 | if (!may_omit) |
c04f5787 | 1979 | s_app_file_string (s, appfile); |
252b5132 RH |
1980 | } |
1981 | } | |
1982 | ||
e9fc6c21 AO |
1983 | static int |
1984 | get_linefile_number (int *flag) | |
1985 | { | |
1986 | SKIP_WHITESPACE (); | |
1987 | ||
1988 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
1989 | return 0; | |
1990 | ||
1991 | *flag = get_absolute_expression (); | |
1992 | ||
1993 | return 1; | |
1994 | } | |
1995 | ||
252b5132 RH |
1996 | /* Handle the .appline pseudo-op. This is automatically generated by |
1997 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1998 | default definition may be overridden by the object or CPU specific | |
1999 | pseudo-ops. */ | |
2000 | ||
2001 | void | |
93e914b2 | 2002 | s_app_line (int appline) |
252b5132 | 2003 | { |
e9fc6c21 | 2004 | char *file = NULL; |
252b5132 RH |
2005 | int l; |
2006 | ||
2007 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
2008 | if (appline) |
2009 | l = get_absolute_expression (); | |
2010 | else if (!get_linefile_number (&l)) | |
2011 | { | |
2012 | ignore_rest_of_line (); | |
2013 | return; | |
2014 | } | |
2015 | ||
2016 | l--; | |
47837f8e NC |
2017 | |
2018 | if (l < -1) | |
252b5132 | 2019 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
2020 | Besides, it's silly. GCC however will generate a line number of |
2021 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
2022 | ||
fa94de6b | 2023 | # 0 "<built-in>" |
47837f8e NC |
2024 | |
2025 | We do not want to barf on this, especially since such files are used | |
2026 | in the GCC and GDB testsuites. So we check for negative line numbers | |
2027 | rather than non-positive line numbers. */ | |
0e389e77 | 2028 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 2029 | l + 1); |
252b5132 RH |
2030 | else |
2031 | { | |
93e914b2 | 2032 | int flags = 0; |
93e914b2 AO |
2033 | int length = 0; |
2034 | ||
2035 | if (!appline) | |
2036 | { | |
e9fc6c21 AO |
2037 | SKIP_WHITESPACE (); |
2038 | ||
2039 | if (*input_line_pointer == '"') | |
2040 | file = demand_copy_string (&length); | |
93e914b2 AO |
2041 | |
2042 | if (file) | |
2043 | { | |
2044 | int this_flag; | |
2045 | ||
e9fc6c21 | 2046 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
2047 | switch (this_flag) |
2048 | { | |
2049 | /* From GCC's cpp documentation: | |
2050 | 1: start of a new file. | |
2051 | 2: returning to a file after having included | |
fa94de6b | 2052 | another file. |
93e914b2 AO |
2053 | 3: following text comes from a system header file. |
2054 | 4: following text should be treated as extern "C". | |
2055 | ||
2056 | 4 is nonsensical for the assembler; 3, we don't | |
2057 | care about, so we ignore it just in case a | |
2058 | system header file is included while | |
2059 | preprocessing assembly. So 1 and 2 are all we | |
2060 | care about, and they are mutually incompatible. | |
2061 | new_logical_line_flags() demands this. */ | |
2062 | case 1: | |
2063 | case 2: | |
2064 | if (flags && flags != (1 << this_flag)) | |
2065 | as_warn (_("incompatible flag %i in line directive"), | |
2066 | this_flag); | |
2067 | else | |
2068 | flags |= 1 << this_flag; | |
2069 | break; | |
2070 | ||
2071 | case 3: | |
2072 | case 4: | |
2073 | /* We ignore these. */ | |
2074 | break; | |
2075 | ||
2076 | default: | |
2077 | as_warn (_("unsupported flag %i in line directive"), | |
2078 | this_flag); | |
2079 | break; | |
2080 | } | |
e9fc6c21 AO |
2081 | |
2082 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
2083 | file = 0; | |
93e914b2 AO |
2084 | } |
2085 | } | |
2086 | ||
e9fc6c21 AO |
2087 | if (appline || file) |
2088 | { | |
2089 | new_logical_line_flags (file, l, flags); | |
252b5132 | 2090 | #ifdef LISTING |
e9fc6c21 AO |
2091 | if (listing) |
2092 | listing_source_line (l); | |
252b5132 | 2093 | #endif |
e9fc6c21 | 2094 | } |
252b5132 | 2095 | } |
e9fc6c21 AO |
2096 | if (appline || file) |
2097 | demand_empty_rest_of_line (); | |
2098 | else | |
2099 | ignore_rest_of_line (); | |
252b5132 RH |
2100 | } |
2101 | ||
2102 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
2103 | read_a_source_file. */ | |
2104 | ||
2105 | void | |
39e6acbd | 2106 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2107 | { |
2108 | if (flag_mri) | |
2109 | { | |
2110 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 2111 | but we don't support that. */ |
252b5132 | 2112 | SKIP_WHITESPACE (); |
041ff4dd | 2113 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2114 | && *input_line_pointer != '*' |
2115 | && *input_line_pointer != '!') | |
2116 | as_warn (_("start address not supported")); | |
2117 | } | |
2118 | } | |
2119 | ||
2120 | /* Handle the .err pseudo-op. */ | |
2121 | ||
2122 | void | |
39e6acbd | 2123 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2124 | { |
2125 | as_bad (_(".err encountered")); | |
2126 | demand_empty_rest_of_line (); | |
d190d046 HPN |
2127 | } |
2128 | ||
2129 | /* Handle the .error and .warning pseudo-ops. */ | |
2130 | ||
2131 | void | |
2132 | s_errwarn (int err) | |
2133 | { | |
2134 | int len; | |
2135 | /* The purpose for the conditional assignment is not to | |
2136 | internationalize the directive itself, but that we need a | |
2137 | self-contained message, one that can be passed like the | |
2138 | demand_copy_C_string return value, and with no assumption on the | |
2139 | location of the name of the directive within the message. */ | |
2140 | char *msg | |
2141 | = (err ? _(".error directive invoked in source file") | |
2142 | : _(".warning directive invoked in source file")); | |
2143 | ||
2144 | if (!is_it_end_of_statement ()) | |
2145 | { | |
2146 | if (*input_line_pointer != '\"') | |
2147 | { | |
2148 | as_bad (_("%s argument must be a string"), | |
2149 | err ? ".error" : ".warning"); | |
40a4d956 | 2150 | ignore_rest_of_line (); |
d190d046 HPN |
2151 | return; |
2152 | } | |
2153 | ||
2154 | msg = demand_copy_C_string (&len); | |
2155 | if (msg == NULL) | |
2156 | return; | |
2157 | } | |
2158 | ||
2159 | if (err) | |
2160 | as_bad ("%s", msg); | |
2161 | else | |
2162 | as_warn ("%s", msg); | |
2163 | demand_empty_rest_of_line (); | |
252b5132 RH |
2164 | } |
2165 | ||
2166 | /* Handle the MRI fail pseudo-op. */ | |
2167 | ||
2168 | void | |
39e6acbd | 2169 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2170 | { |
2171 | offsetT temp; | |
2172 | char *stop = NULL; | |
fb25138b | 2173 | char stopc = 0; |
252b5132 RH |
2174 | |
2175 | if (flag_mri) | |
2176 | stop = mri_comment_field (&stopc); | |
2177 | ||
2178 | temp = get_absolute_expression (); | |
2179 | if (temp >= 500) | |
2180 | as_warn (_(".fail %ld encountered"), (long) temp); | |
2181 | else | |
2182 | as_bad (_(".fail %ld encountered"), (long) temp); | |
2183 | ||
2184 | demand_empty_rest_of_line (); | |
2185 | ||
2186 | if (flag_mri) | |
2187 | mri_comment_end (stop, stopc); | |
2188 | } | |
2189 | ||
041ff4dd | 2190 | void |
39e6acbd | 2191 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2192 | { |
2193 | expressionS rep_exp; | |
2194 | long size = 1; | |
3d540e93 | 2195 | long fill = 0; |
252b5132 RH |
2196 | char *p; |
2197 | ||
2198 | #ifdef md_flush_pending_output | |
2199 | md_flush_pending_output (); | |
2200 | #endif | |
2201 | ||
cc3f603a JM |
2202 | #ifdef md_cons_align |
2203 | md_cons_align (1); | |
2204 | #endif | |
2205 | ||
252b5132 RH |
2206 | get_known_segmented_expression (&rep_exp); |
2207 | if (*input_line_pointer == ',') | |
2208 | { | |
2209 | input_line_pointer++; | |
2210 | size = get_absolute_expression (); | |
2211 | if (*input_line_pointer == ',') | |
2212 | { | |
2213 | input_line_pointer++; | |
2214 | fill = get_absolute_expression (); | |
2215 | } | |
2216 | } | |
2217 | ||
2218 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
2219 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
2220 | if (size > BSD_FILL_SIZE_CROCK_8) | |
2221 | { | |
0e389e77 | 2222 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
2223 | size = BSD_FILL_SIZE_CROCK_8; |
2224 | } | |
2225 | if (size < 0) | |
2226 | { | |
0e389e77 | 2227 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
2228 | size = 0; |
2229 | } | |
2230 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
2231 | { | |
2232 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 2233 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
2234 | size = 0; |
2235 | } | |
2236 | ||
2237 | if (size && !need_pass_2) | |
2238 | { | |
ec9ab52c JB |
2239 | if (now_seg == absolute_section) |
2240 | { | |
2241 | if (rep_exp.X_op != O_constant) | |
2242 | as_bad (_("non-constant fill count for absolute section")); | |
2243 | else if (fill && rep_exp.X_add_number != 0) | |
2244 | as_bad (_("attempt to fill absolute section with non-zero value")); | |
2245 | abs_section_offset += rep_exp.X_add_number * size; | |
2246 | } | |
2247 | else if (fill | |
2248 | && (rep_exp.X_op != O_constant || rep_exp.X_add_number != 0) | |
2249 | && in_bss ()) | |
2250 | as_bad (_("attempt to fill section `%s' with non-zero value"), | |
2251 | segment_name (now_seg)); | |
2252 | ||
252b5132 RH |
2253 | if (rep_exp.X_op == O_constant) |
2254 | { | |
2255 | p = frag_var (rs_fill, (int) size, (int) size, | |
2256 | (relax_substateT) 0, (symbolS *) 0, | |
2257 | (offsetT) rep_exp.X_add_number, | |
2258 | (char *) 0); | |
2259 | } | |
2260 | else | |
2261 | { | |
2262 | /* We don't have a constant repeat count, so we can't use | |
2263 | rs_fill. We can get the same results out of rs_space, | |
2264 | but its argument is in bytes, so we must multiply the | |
2265 | repeat count by size. */ | |
2266 | ||
2267 | symbolS *rep_sym; | |
2268 | rep_sym = make_expr_symbol (&rep_exp); | |
2269 | if (size != 1) | |
2270 | { | |
2271 | expressionS size_exp; | |
2272 | size_exp.X_op = O_constant; | |
2273 | size_exp.X_add_number = size; | |
2274 | ||
2275 | rep_exp.X_op = O_multiply; | |
2276 | rep_exp.X_add_symbol = rep_sym; | |
2277 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
2278 | rep_exp.X_add_number = 0; | |
2279 | rep_sym = make_expr_symbol (&rep_exp); | |
2280 | } | |
2281 | ||
2282 | p = frag_var (rs_space, (int) size, (int) size, | |
2283 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
2284 | } | |
f0e652b4 | 2285 | |
252b5132 | 2286 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2287 | |
252b5132 | 2288 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2289 | flavoured AS. The following bizarre behaviour is to be |
2290 | compatible with above. I guess they tried to take up to 8 | |
2291 | bytes from a 4-byte expression and they forgot to sign | |
2292 | extend. */ | |
252b5132 RH |
2293 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2294 | md_number_to_chars (p, (valueT) fill, | |
2295 | (size > BSD_FILL_SIZE_CROCK_4 | |
2296 | ? BSD_FILL_SIZE_CROCK_4 | |
2297 | : (int) size)); | |
2298 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2299 | but emits no error message because it seems a legal thing to do. |
2300 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2301 | compiler. */ |
252b5132 RH |
2302 | } |
2303 | demand_empty_rest_of_line (); | |
2304 | } | |
2305 | ||
041ff4dd | 2306 | void |
39e6acbd | 2307 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2308 | { |
2309 | char *name; | |
2310 | int c; | |
2311 | symbolS *symbolP; | |
2312 | char *stop = NULL; | |
fb25138b | 2313 | char stopc = 0; |
252b5132 RH |
2314 | |
2315 | if (flag_mri) | |
2316 | stop = mri_comment_field (&stopc); | |
2317 | ||
2318 | do | |
2319 | { | |
7bfd842d NC |
2320 | if ((name = read_symbol_name ()) == NULL) |
2321 | return; | |
2322 | ||
252b5132 | 2323 | symbolP = symbol_find_or_make (name); |
58b5739a RH |
2324 | S_SET_EXTERNAL (symbolP); |
2325 | ||
252b5132 | 2326 | SKIP_WHITESPACE (); |
58b5739a | 2327 | c = *input_line_pointer; |
252b5132 RH |
2328 | if (c == ',') |
2329 | { | |
2330 | input_line_pointer++; | |
2331 | SKIP_WHITESPACE (); | |
0e389e77 | 2332 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2333 | c = '\n'; |
2334 | } | |
7bfd842d NC |
2335 | |
2336 | free (name); | |
252b5132 RH |
2337 | } |
2338 | while (c == ','); | |
2339 | ||
2340 | demand_empty_rest_of_line (); | |
2341 | ||
2342 | if (flag_mri) | |
2343 | mri_comment_end (stop, stopc); | |
2344 | } | |
2345 | ||
2346 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2347 | ||
2348 | void | |
39e6acbd | 2349 | s_irp (int irpc) |
252b5132 | 2350 | { |
40a4d956 | 2351 | char *file, *eol; |
252b5132 RH |
2352 | unsigned int line; |
2353 | sb s; | |
2354 | const char *err; | |
2355 | sb out; | |
2356 | ||
2357 | as_where (&file, &line); | |
2358 | ||
40a4d956 | 2359 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2360 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2361 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2362 | input_line_pointer = eol; | |
252b5132 RH |
2363 | |
2364 | sb_new (&out); | |
2365 | ||
7592cfd7 | 2366 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2367 | if (err != NULL) |
2368 | as_bad_where (file, line, "%s", err); | |
2369 | ||
2370 | sb_kill (&s); | |
2371 | ||
9f10757c | 2372 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2373 | sb_kill (&out); |
2374 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2375 | } | |
2376 | ||
2377 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2378 | the section to only be linked once. However, this is not supported | |
2379 | by most object file formats. This takes an optional argument, | |
2380 | which is what to do about duplicates. */ | |
2381 | ||
2382 | void | |
39e6acbd | 2383 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2384 | { |
2385 | enum linkonce_type type; | |
2386 | ||
2387 | SKIP_WHITESPACE (); | |
2388 | ||
2389 | type = LINKONCE_DISCARD; | |
2390 | ||
041ff4dd | 2391 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2392 | { |
2393 | char *s; | |
2394 | char c; | |
2395 | ||
d02603dc | 2396 | c = get_symbol_name (& s); |
252b5132 RH |
2397 | if (strcasecmp (s, "discard") == 0) |
2398 | type = LINKONCE_DISCARD; | |
2399 | else if (strcasecmp (s, "one_only") == 0) | |
2400 | type = LINKONCE_ONE_ONLY; | |
2401 | else if (strcasecmp (s, "same_size") == 0) | |
2402 | type = LINKONCE_SAME_SIZE; | |
2403 | else if (strcasecmp (s, "same_contents") == 0) | |
2404 | type = LINKONCE_SAME_CONTENTS; | |
2405 | else | |
2406 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2407 | ||
d02603dc | 2408 | (void) restore_line_pointer (c); |
252b5132 RH |
2409 | } |
2410 | ||
2411 | #ifdef obj_handle_link_once | |
2412 | obj_handle_link_once (type); | |
2413 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2414 | { |
2415 | flagword flags; | |
2416 | ||
2417 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2418 | as_warn (_(".linkonce is not supported for this object file format")); | |
2419 | ||
2420 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2421 | flags |= SEC_LINK_ONCE; | |
2422 | switch (type) | |
2423 | { | |
2424 | default: | |
2425 | abort (); | |
2426 | case LINKONCE_DISCARD: | |
2427 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2428 | break; | |
2429 | case LINKONCE_ONE_ONLY: | |
2430 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2431 | break; | |
2432 | case LINKONCE_SAME_SIZE: | |
2433 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2434 | break; | |
2435 | case LINKONCE_SAME_CONTENTS: | |
2436 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2437 | break; | |
2438 | } | |
041ff4dd | 2439 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2440 | as_bad (_("bfd_set_section_flags: %s"), |
2441 | bfd_errmsg (bfd_get_error ())); | |
2442 | } | |
252b5132 RH |
2443 | #endif /* ! defined (obj_handle_link_once) */ |
2444 | ||
2445 | demand_empty_rest_of_line (); | |
2446 | } | |
2447 | ||
e13bab5a | 2448 | void |
9136aa49 | 2449 | bss_alloc (symbolS *symbolP, addressT size, unsigned int align) |
252b5132 | 2450 | { |
e13bab5a | 2451 | char *pfrag; |
252b5132 RH |
2452 | segT current_seg = now_seg; |
2453 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2454 | segT bss_seg = bss_section; |
2455 | ||
252b5132 RH |
2456 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2457 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2458 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2459 | { | |
2460 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2461 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2462 | { |
2463 | bss_seg = subseg_new (".sbss", 1); | |
2464 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2465 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2466 | as_warn (_("error setting flags for \".sbss\": %s"), |
2467 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2468 | } |
2469 | } | |
2470 | #endif | |
e13bab5a | 2471 | subseg_set (bss_seg, 1); |
8684e216 | 2472 | |
9136aa49 | 2473 | if (align > OCTETS_PER_BYTE_POWER) |
041ff4dd | 2474 | { |
e13bab5a AM |
2475 | record_alignment (bss_seg, align); |
2476 | frag_align (align, 0, 0); | |
041ff4dd | 2477 | } |
252b5132 | 2478 | |
e13bab5a AM |
2479 | /* Detach from old frag. */ |
2480 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2481 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2482 | |
e13bab5a AM |
2483 | symbol_set_frag (symbolP, frag_now); |
2484 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2485 | *pfrag = 0; | |
f0e652b4 | 2486 | |
e13bab5a AM |
2487 | #ifdef S_SET_SIZE |
2488 | S_SET_SIZE (symbolP, size); | |
2489 | #endif | |
2490 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2491 | |
e13bab5a AM |
2492 | #ifdef OBJ_COFF |
2493 | /* The symbol may already have been created with a preceding | |
2494 | ".globl" directive -- be careful not to step on storage class | |
2495 | in that case. Otherwise, set it to static. */ | |
2496 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2497 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2498 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2499 | |
e13bab5a AM |
2500 | subseg_set (current_seg, current_subseg); |
2501 | } | |
f0e652b4 | 2502 | |
e13bab5a AM |
2503 | offsetT |
2504 | parse_align (int align_bytes) | |
2505 | { | |
2506 | expressionS exp; | |
2507 | addressT align; | |
252b5132 | 2508 | |
e13bab5a AM |
2509 | SKIP_WHITESPACE (); |
2510 | if (*input_line_pointer != ',') | |
2511 | { | |
2512 | no_align: | |
2513 | as_bad (_("expected alignment after size")); | |
2514 | ignore_rest_of_line (); | |
2515 | return -1; | |
2516 | } | |
f0e652b4 | 2517 | |
e13bab5a AM |
2518 | input_line_pointer++; |
2519 | SKIP_WHITESPACE (); | |
f0e652b4 | 2520 | |
e13bab5a AM |
2521 | align = get_absolute_expr (&exp); |
2522 | if (exp.X_op == O_absent) | |
2523 | goto no_align; | |
2524 | ||
2525 | if (!exp.X_unsigned) | |
2526 | { | |
2527 | as_warn (_("alignment negative; 0 assumed")); | |
2528 | align = 0; | |
041ff4dd | 2529 | } |
e13bab5a AM |
2530 | |
2531 | if (align_bytes && align != 0) | |
252b5132 | 2532 | { |
e13bab5a AM |
2533 | /* convert to a power of 2 alignment */ |
2534 | unsigned int alignp2 = 0; | |
2535 | while ((align & 1) == 0) | |
2536 | align >>= 1, ++alignp2; | |
2537 | if (align != 1) | |
252b5132 | 2538 | { |
e13bab5a AM |
2539 | as_bad (_("alignment not a power of 2")); |
2540 | ignore_rest_of_line (); | |
2541 | return -1; | |
252b5132 | 2542 | } |
e13bab5a | 2543 | align = alignp2; |
252b5132 | 2544 | } |
e13bab5a AM |
2545 | return align; |
2546 | } | |
252b5132 | 2547 | |
e13bab5a AM |
2548 | /* Called from s_comm_internal after symbol name and size have been |
2549 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2550 | 1 if this was a ".bss" directive which has a 3rd argument | |
2551 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2552 | with alignment in bytes. */ | |
252b5132 | 2553 | |
13c56984 | 2554 | symbolS * |
e13bab5a AM |
2555 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2556 | { | |
2557 | addressT align = 0; | |
252b5132 | 2558 | |
e13bab5a AM |
2559 | if (needs_align) |
2560 | { | |
2561 | align = parse_align (needs_align - 1); | |
2562 | if (align == (addressT) -1) | |
2563 | return NULL; | |
252b5132 RH |
2564 | } |
2565 | else | |
e13bab5a AM |
2566 | /* Assume some objects may require alignment on some systems. */ |
2567 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2568 | |
e13bab5a AM |
2569 | bss_alloc (symbolP, size, align); |
2570 | return symbolP; | |
041ff4dd | 2571 | } |
252b5132 RH |
2572 | |
2573 | void | |
39e6acbd | 2574 | s_lcomm (int needs_align) |
252b5132 | 2575 | { |
e13bab5a | 2576 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2577 | } |
2578 | ||
041ff4dd | 2579 | void |
39e6acbd | 2580 | s_lcomm_bytes (int needs_align) |
252b5132 | 2581 | { |
e13bab5a | 2582 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2583 | } |
2584 | ||
041ff4dd | 2585 | void |
39e6acbd | 2586 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2587 | { |
3d540e93 | 2588 | char *name; |
252b5132 | 2589 | expressionS exp; |
3d540e93 | 2590 | symbolS *symbolP; |
252b5132 | 2591 | |
041ff4dd | 2592 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
7bfd842d NC |
2593 | if ((name = read_symbol_name ()) == NULL) |
2594 | return; | |
f0e652b4 | 2595 | |
252b5132 RH |
2596 | if (*input_line_pointer != ',') |
2597 | { | |
0e389e77 | 2598 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 2599 | goto err_out; |
252b5132 | 2600 | } |
f0e652b4 | 2601 | |
252b5132 | 2602 | input_line_pointer++; |
9497f5ac | 2603 | expression_and_evaluate (&exp); |
f0e652b4 | 2604 | |
252b5132 RH |
2605 | if (exp.X_op != O_constant |
2606 | && exp.X_op != O_register) | |
2607 | { | |
2608 | as_bad (_("bad expression")); | |
7bfd842d | 2609 | goto err_out; |
252b5132 | 2610 | } |
f0e652b4 | 2611 | |
252b5132 RH |
2612 | symbolP = symbol_find_or_make (name); |
2613 | ||
86ebace2 | 2614 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2615 | { |
2616 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2617 | keep the "external" bit. */ |
252b5132 RH |
2618 | S_SET_SEGMENT (symbolP, |
2619 | (exp.X_op == O_constant | |
2620 | ? absolute_section | |
2621 | : reg_section)); | |
2622 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2623 | } | |
2624 | else | |
2625 | { | |
0e389e77 | 2626 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2627 | } |
f0e652b4 | 2628 | |
252b5132 | 2629 | demand_empty_rest_of_line (); |
7bfd842d NC |
2630 | free (name); |
2631 | return; | |
2632 | ||
2633 | err_out: | |
2634 | ignore_rest_of_line (); | |
2635 | free (name); | |
2636 | return; | |
041ff4dd | 2637 | } |
252b5132 | 2638 | |
0822d075 NC |
2639 | /* Read a line into an sb. Returns the character that ended the line |
2640 | or zero if there are no more lines. */ | |
252b5132 RH |
2641 | |
2642 | static int | |
7592cfd7 | 2643 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2644 | { |
40a4d956 | 2645 | char *eol; |
252b5132 RH |
2646 | |
2647 | if (input_line_pointer[-1] == '\n') | |
2648 | bump_line_counters (); | |
2649 | ||
2650 | if (input_line_pointer >= buffer_limit) | |
2651 | { | |
2652 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2653 | if (buffer_limit == 0) | |
2654 | return 0; | |
2655 | } | |
2656 | ||
7592cfd7 | 2657 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2658 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2659 | input_line_pointer = eol; | |
f0e652b4 | 2660 | |
0822d075 NC |
2661 | /* Don't skip multiple end-of-line characters, because that breaks support |
2662 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2663 | characters but isn't. Instead just skip one end of line character and | |
2664 | return the character skipped so that the caller can re-insert it if | |
2665 | necessary. */ | |
40a4d956 | 2666 | return *input_line_pointer++; |
252b5132 RH |
2667 | } |
2668 | ||
39a45edc | 2669 | static size_t |
7592cfd7 NC |
2670 | get_non_macro_line_sb (sb *line) |
2671 | { | |
2672 | return get_line_sb (line, 0); | |
2673 | } | |
2674 | ||
39a45edc | 2675 | static size_t |
7592cfd7 NC |
2676 | get_macro_line_sb (sb *line) |
2677 | { | |
2678 | return get_line_sb (line, 1); | |
2679 | } | |
2680 | ||
fea17916 | 2681 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2682 | |
2683 | void | |
39e6acbd | 2684 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2685 | { |
40a4d956 | 2686 | char *file, *eol; |
252b5132 RH |
2687 | unsigned int line; |
2688 | sb s; | |
252b5132 RH |
2689 | const char *err; |
2690 | const char *name; | |
2691 | ||
2692 | as_where (&file, &line); | |
2693 | ||
40a4d956 | 2694 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2695 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2696 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2697 | input_line_pointer = eol; | |
252b5132 | 2698 | |
252b5132 | 2699 | if (line_label != NULL) |
360e86f1 JB |
2700 | { |
2701 | sb label; | |
d2ae702c | 2702 | size_t len; |
252b5132 | 2703 | |
d2ae702c L |
2704 | name = S_GET_NAME (line_label); |
2705 | len = strlen (name); | |
2706 | sb_build (&label, len); | |
2707 | sb_add_buffer (&label, name, len); | |
7592cfd7 | 2708 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2709 | sb_kill (&label); |
2710 | } | |
2711 | else | |
7592cfd7 | 2712 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2713 | if (err != NULL) |
02ddf156 | 2714 | as_bad_where (file, line, err, name); |
252b5132 RH |
2715 | else |
2716 | { | |
2717 | if (line_label != NULL) | |
2718 | { | |
5e75c3ab | 2719 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2720 | S_SET_VALUE (line_label, 0); |
2b47531b | 2721 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2722 | } |
2723 | ||
abd63a32 | 2724 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2725 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2726 | || (!flag_m68k_mri |
252b5132 RH |
2727 | && *name == '.' |
2728 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2729 | as_warn_where (file, |
2730 | line, | |
2731 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2732 | name); |
2733 | } | |
2734 | ||
2735 | sb_kill (&s); | |
2736 | } | |
2737 | ||
2738 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2739 | expansion. */ | |
2740 | ||
2741 | void | |
39e6acbd | 2742 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2743 | { |
5808f4a6 NC |
2744 | if (macro_nest) |
2745 | { | |
2746 | cond_exit_macro (macro_nest); | |
2747 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2748 | } | |
2749 | else | |
2750 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2751 | } |
2752 | ||
2753 | /* Switch in and out of MRI mode. */ | |
2754 | ||
2755 | void | |
39e6acbd | 2756 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2757 | { |
3d540e93 NC |
2758 | int on; |
2759 | #ifdef MRI_MODE_CHANGE | |
2760 | int old_flag; | |
2761 | #endif | |
252b5132 RH |
2762 | |
2763 | on = get_absolute_expression (); | |
3d540e93 | 2764 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2765 | old_flag = flag_mri; |
3d540e93 | 2766 | #endif |
252b5132 RH |
2767 | if (on != 0) |
2768 | { | |
2769 | flag_mri = 1; | |
2770 | #ifdef TC_M68K | |
2771 | flag_m68k_mri = 1; | |
2772 | #endif | |
2773 | macro_mri_mode (1); | |
2774 | } | |
2775 | else | |
2776 | { | |
2777 | flag_mri = 0; | |
abd63a32 | 2778 | #ifdef TC_M68K |
252b5132 | 2779 | flag_m68k_mri = 0; |
abd63a32 | 2780 | #endif |
252b5132 RH |
2781 | macro_mri_mode (0); |
2782 | } | |
2783 | ||
2784 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2785 | update the operator rankings. */ | |
2786 | expr_set_precedence (); | |
2787 | ||
2788 | #ifdef MRI_MODE_CHANGE | |
2789 | if (on != old_flag) | |
2790 | MRI_MODE_CHANGE (on); | |
2791 | #endif | |
2792 | ||
2793 | demand_empty_rest_of_line (); | |
2794 | } | |
2795 | ||
2796 | /* Handle changing the location counter. */ | |
2797 | ||
2798 | static void | |
39e6acbd | 2799 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 | 2800 | { |
259af69e AM |
2801 | if (segment != now_seg |
2802 | && segment != absolute_section | |
2803 | && segment != expr_section) | |
0e389e77 | 2804 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2805 | |
2806 | if (now_seg == absolute_section) | |
2807 | { | |
2808 | if (fill != 0) | |
2809 | as_warn (_("ignoring fill value in absolute section")); | |
2810 | if (exp->X_op != O_constant) | |
2811 | { | |
2812 | as_bad (_("only constant offsets supported in absolute section")); | |
2813 | exp->X_add_number = 0; | |
2814 | } | |
2815 | abs_section_offset = exp->X_add_number; | |
2816 | } | |
2817 | else | |
2818 | { | |
2819 | char *p; | |
2289f85d AM |
2820 | symbolS *sym = exp->X_add_symbol; |
2821 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2822 | |
ec9ab52c JB |
2823 | if (fill && in_bss ()) |
2824 | as_warn (_("ignoring fill value in section `%s'"), | |
2825 | segment_name (now_seg)); | |
2826 | ||
2289f85d AM |
2827 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2828 | { | |
2829 | /* Handle complex expressions. */ | |
2830 | sym = make_expr_symbol (exp); | |
2831 | off = 0; | |
2832 | } | |
2833 | ||
2834 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2835 | *p = fill; |
2836 | } | |
2837 | } | |
2838 | ||
041ff4dd | 2839 | void |
39e6acbd | 2840 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2841 | { |
3d540e93 | 2842 | segT segment; |
252b5132 | 2843 | expressionS exp; |
3d540e93 | 2844 | long temp_fill; |
252b5132 RH |
2845 | |
2846 | #ifdef md_flush_pending_output | |
2847 | md_flush_pending_output (); | |
2848 | #endif | |
2849 | ||
2850 | /* The m68k MRI assembler has a different meaning for .org. It | |
2851 | means to create an absolute section at a given address. We can't | |
2852 | support that--use a linker script instead. */ | |
2853 | if (flag_m68k_mri) | |
2854 | { | |
2855 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2856 | ignore_rest_of_line (); | |
2857 | return; | |
2858 | } | |
2859 | ||
2860 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2861 | thing as a sub-segment-relative origin. Any absolute origin is | |
2862 | given a warning, then assumed to be segment-relative. Any | |
2863 | segmented origin expression ("foo+42") had better be in the right | |
2864 | segment or the .org is ignored. | |
2865 | ||
2866 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2867 | we never know sub-segment sizes when we are reading code. BSD | |
2868 | will crash trying to emit negative numbers of filler bytes in | |
2869 | certain .orgs. We don't crash, but see as-write for that code. | |
2870 | ||
2871 | Don't make frag if need_pass_2==1. */ | |
2872 | segment = get_known_segmented_expression (&exp); | |
2873 | if (*input_line_pointer == ',') | |
2874 | { | |
2875 | input_line_pointer++; | |
2876 | temp_fill = get_absolute_expression (); | |
2877 | } | |
2878 | else | |
2879 | temp_fill = 0; | |
2880 | ||
2881 | if (!need_pass_2) | |
2882 | do_org (segment, &exp, temp_fill); | |
2883 | ||
2884 | demand_empty_rest_of_line (); | |
041ff4dd | 2885 | } |
252b5132 RH |
2886 | |
2887 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2888 | called by the obj-format routine which handles section changing | |
2889 | when in MRI mode. It will create a new section, and return it. It | |
2890 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2891 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2892 | |
2893 | void | |
39e6acbd | 2894 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2895 | { |
2896 | #ifdef TC_M68K | |
2897 | ||
2898 | char *name; | |
2899 | char c; | |
2900 | segT seg; | |
2901 | ||
2902 | SKIP_WHITESPACE (); | |
041ff4dd | 2903 | |
252b5132 | 2904 | name = input_line_pointer; |
3882b010 | 2905 | if (!ISDIGIT (*name)) |
d02603dc | 2906 | c = get_symbol_name (& name); |
252b5132 RH |
2907 | else |
2908 | { | |
2909 | do | |
2910 | { | |
2911 | ++input_line_pointer; | |
2912 | } | |
3882b010 | 2913 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2914 | |
252b5132 RH |
2915 | c = *input_line_pointer; |
2916 | *input_line_pointer = '\0'; | |
2917 | } | |
2918 | ||
2919 | name = xstrdup (name); | |
2920 | ||
d02603dc | 2921 | c = restore_line_pointer (c); |
252b5132 RH |
2922 | |
2923 | seg = subseg_new (name, 0); | |
2924 | ||
d02603dc | 2925 | if (c == ',') |
252b5132 | 2926 | { |
9136aa49 | 2927 | unsigned int align; |
252b5132 RH |
2928 | |
2929 | ++input_line_pointer; | |
2930 | align = get_absolute_expression (); | |
2931 | record_alignment (seg, align); | |
2932 | } | |
2933 | ||
2934 | *type = 'C'; | |
2935 | if (*input_line_pointer == ',') | |
2936 | { | |
2937 | c = *++input_line_pointer; | |
3882b010 | 2938 | c = TOUPPER (c); |
252b5132 RH |
2939 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2940 | *type = c; | |
2941 | else | |
2942 | as_bad (_("unrecognized section type")); | |
2943 | ++input_line_pointer; | |
2944 | ||
252b5132 RH |
2945 | { |
2946 | flagword flags; | |
2947 | ||
2948 | flags = SEC_NO_FLAGS; | |
2949 | if (*type == 'C') | |
2950 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2951 | else if (*type == 'D' || *type == 'M') | |
2952 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2953 | else if (*type == 'R') | |
2954 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2955 | if (flags != SEC_NO_FLAGS) | |
2956 | { | |
041ff4dd | 2957 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2958 | as_warn (_("error setting flags for \"%s\": %s"), |
2959 | bfd_section_name (stdoutput, seg), | |
2960 | bfd_errmsg (bfd_get_error ())); | |
2961 | } | |
2962 | } | |
252b5132 RH |
2963 | } |
2964 | ||
2965 | /* Ignore the HP type. */ | |
2966 | if (*input_line_pointer == ',') | |
2967 | input_line_pointer += 2; | |
2968 | ||
2969 | demand_empty_rest_of_line (); | |
2970 | ||
2971 | #else /* ! TC_M68K */ | |
2972 | #ifdef TC_I960 | |
2973 | ||
2974 | char *name; | |
2975 | char c; | |
2976 | segT seg; | |
2977 | ||
2978 | SKIP_WHITESPACE (); | |
2979 | ||
d02603dc | 2980 | c = get_symbol_name (& name); |
252b5132 RH |
2981 | |
2982 | name = xstrdup (name); | |
2983 | ||
d02603dc | 2984 | c = restore_line_pointer (c); |
252b5132 RH |
2985 | |
2986 | seg = subseg_new (name, 0); | |
2987 | ||
d02603dc | 2988 | if (c != ',') |
252b5132 RH |
2989 | *type = 'C'; |
2990 | else | |
2991 | { | |
2992 | char *sectype; | |
2993 | ||
2994 | ++input_line_pointer; | |
2995 | SKIP_WHITESPACE (); | |
d02603dc | 2996 | c = get_symbol_name (& sectype); |
252b5132 RH |
2997 | if (*sectype == '\0') |
2998 | *type = 'C'; | |
2999 | else if (strcasecmp (sectype, "text") == 0) | |
3000 | *type = 'C'; | |
3001 | else if (strcasecmp (sectype, "data") == 0) | |
3002 | *type = 'D'; | |
3003 | else if (strcasecmp (sectype, "romdata") == 0) | |
3004 | *type = 'R'; | |
3005 | else | |
3006 | as_warn (_("unrecognized section type `%s'"), sectype); | |
d02603dc | 3007 | (void) restore_line_pointer (c); |
252b5132 RH |
3008 | } |
3009 | ||
3010 | if (*input_line_pointer == ',') | |
3011 | { | |
3012 | char *seccmd; | |
3013 | ||
3014 | ++input_line_pointer; | |
3015 | SKIP_WHITESPACE (); | |
d02603dc | 3016 | c = get_symbol_name (& seccmd); |
252b5132 RH |
3017 | if (strcasecmp (seccmd, "absolute") == 0) |
3018 | { | |
3019 | as_bad (_("absolute sections are not supported")); | |
3020 | *input_line_pointer = c; | |
3021 | ignore_rest_of_line (); | |
3022 | return; | |
3023 | } | |
3024 | else if (strcasecmp (seccmd, "align") == 0) | |
3025 | { | |
9136aa49 | 3026 | unsigned int align; |
252b5132 | 3027 | |
d02603dc | 3028 | (void) restore_line_pointer (c); |
252b5132 RH |
3029 | align = get_absolute_expression (); |
3030 | record_alignment (seg, align); | |
3031 | } | |
3032 | else | |
3033 | { | |
3034 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
d02603dc | 3035 | (void) restore_line_pointer (c); |
252b5132 RH |
3036 | } |
3037 | } | |
3038 | ||
041ff4dd | 3039 | demand_empty_rest_of_line (); |
252b5132 RH |
3040 | |
3041 | #else /* ! TC_I960 */ | |
3042 | /* The MRI assembler seems to use different forms of .sect for | |
3043 | different targets. */ | |
3044 | as_bad ("MRI mode not supported for this target"); | |
3045 | ignore_rest_of_line (); | |
3046 | #endif /* ! TC_I960 */ | |
3047 | #endif /* ! TC_M68K */ | |
3048 | } | |
3049 | ||
3050 | /* Handle the .print pseudo-op. */ | |
3051 | ||
3052 | void | |
39e6acbd | 3053 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3054 | { |
3055 | char *s; | |
3056 | int len; | |
3057 | ||
3058 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
3059 | if (s != NULL) |
3060 | printf ("%s\n", s); | |
252b5132 RH |
3061 | demand_empty_rest_of_line (); |
3062 | } | |
3063 | ||
3064 | /* Handle the .purgem pseudo-op. */ | |
3065 | ||
3066 | void | |
39e6acbd | 3067 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3068 | { |
3069 | if (is_it_end_of_statement ()) | |
3070 | { | |
3071 | demand_empty_rest_of_line (); | |
3072 | return; | |
3073 | } | |
3074 | ||
3075 | do | |
3076 | { | |
3077 | char *name; | |
3078 | char c; | |
3079 | ||
3080 | SKIP_WHITESPACE (); | |
d02603dc | 3081 | c = get_symbol_name (& name); |
252b5132 RH |
3082 | delete_macro (name); |
3083 | *input_line_pointer = c; | |
d02603dc | 3084 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
3085 | } |
3086 | while (*input_line_pointer++ == ','); | |
3087 | ||
3088 | --input_line_pointer; | |
3089 | demand_empty_rest_of_line (); | |
3090 | } | |
3091 | ||
057f53c1 | 3092 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 3093 | |
057f53c1 JB |
3094 | static void |
3095 | s_bad_end (int endr) | |
7f28ab9d | 3096 | { |
cc643b88 | 3097 | as_warn (_(".end%c encountered without preceding %s"), |
057f53c1 JB |
3098 | endr ? 'r' : 'm', |
3099 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
3100 | demand_empty_rest_of_line (); |
3101 | } | |
3102 | ||
3103 | /* Handle the .rept pseudo-op. */ | |
3104 | ||
252b5132 | 3105 | void |
39e6acbd | 3106 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3107 | { |
3108 | int count; | |
252b5132 RH |
3109 | |
3110 | count = get_absolute_expression (); | |
3111 | ||
041ff4dd | 3112 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
3113 | } |
3114 | ||
3115 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 3116 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
3117 | |
3118 | void | |
39e6acbd | 3119 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
3120 | { |
3121 | sb one; | |
3122 | sb many; | |
3123 | ||
252b5132 | 3124 | sb_new (&one); |
7592cfd7 | 3125 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 3126 | { |
6dc19fc4 | 3127 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
3128 | return; |
3129 | } | |
3130 | ||
d2ae702c | 3131 | sb_build (&many, count * one.len); |
252b5132 RH |
3132 | while (count-- > 0) |
3133 | sb_add_sb (&many, &one); | |
3134 | ||
3135 | sb_kill (&one); | |
3136 | ||
9f10757c | 3137 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
3138 | sb_kill (&many); |
3139 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3140 | } | |
3141 | ||
c7927a3c NC |
3142 | /* Like do_repeat except that any text matching EXPANDER in the |
3143 | block is replaced by the itteration count. */ | |
3144 | ||
3145 | void | |
3146 | do_repeat_with_expander (int count, | |
3147 | const char * start, | |
3148 | const char * end, | |
3149 | const char * expander) | |
3150 | { | |
3151 | sb one; | |
3152 | sb many; | |
3153 | ||
3154 | sb_new (&one); | |
3155 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3156 | { | |
3157 | as_bad (_("%s without %s"), start, end); | |
3158 | return; | |
3159 | } | |
3160 | ||
3161 | sb_new (&many); | |
3162 | ||
3163 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3164 | { | |
3165 | while (count -- > 0) | |
3166 | { | |
3167 | int len; | |
3168 | char * sub; | |
3169 | sb processed; | |
3170 | ||
d2ae702c | 3171 | sb_build (& processed, one.len); |
c7927a3c NC |
3172 | sb_add_sb (& processed, & one); |
3173 | sub = strstr (processed.ptr, expander); | |
3174 | len = sprintf (sub, "%d", count); | |
3175 | gas_assert (len < 8); | |
3176 | strcpy (sub + len, sub + 8); | |
3177 | processed.len -= (8 - len); | |
3178 | sb_add_sb (& many, & processed); | |
3179 | sb_kill (& processed); | |
3180 | } | |
3181 | } | |
3182 | else | |
3183 | while (count-- > 0) | |
3184 | sb_add_sb (&many, &one); | |
3185 | ||
3186 | sb_kill (&one); | |
3187 | ||
3188 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3189 | sb_kill (&many); | |
3190 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3191 | } | |
3192 | ||
6dc19fc4 TW |
3193 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3194 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3195 | are properly nested. |
6dc19fc4 TW |
3196 | |
3197 | This function makes it easier to implement a premature "break" out of the | |
3198 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3199 | such as line substitutions. */ |
6dc19fc4 TW |
3200 | |
3201 | void | |
39e6acbd | 3202 | end_repeat (int extra) |
6dc19fc4 TW |
3203 | { |
3204 | cond_exit_macro (macro_nest); | |
3205 | while (extra-- >= 0) | |
3206 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3207 | } | |
3208 | ||
be95a9c1 | 3209 | static void |
9497f5ac | 3210 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3211 | { |
3212 | symbolS *symbolP; | |
3213 | ||
3214 | if (name[0] == '.' && name[1] == '\0') | |
3215 | { | |
3216 | /* Turn '. = mumble' into a .org mumble. */ | |
3217 | segT segment; | |
3218 | expressionS exp; | |
3219 | ||
3220 | segment = get_known_segmented_expression (&exp); | |
3221 | ||
3222 | if (!need_pass_2) | |
3223 | do_org (segment, &exp, 0); | |
3224 | ||
3225 | return; | |
3226 | } | |
3227 | ||
3228 | if ((symbolP = symbol_find (name)) == NULL | |
3229 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3230 | { | |
3231 | symbolP = symbol_find_or_make (name); | |
3232 | #ifndef NO_LISTING | |
3233 | /* When doing symbol listings, play games with dummy fragments living | |
3234 | outside the normal fragment chain to record the file and line info | |
3235 | for this symbol. */ | |
3236 | if (listing & LISTING_SYMBOLS) | |
3237 | { | |
3238 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 3239 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
3240 | dummy_frag->line = listing_tail; |
3241 | dummy_frag->fr_symbol = symbolP; | |
3242 | symbol_set_frag (symbolP, dummy_frag); | |
3243 | } | |
3244 | #endif | |
76bd66cf | 3245 | #if defined (OBJ_COFF) && !defined (TE_PE) |
31d20a21 AM |
3246 | /* "set" symbols are local unless otherwise specified. */ |
3247 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3248 | #endif |
3249 | } | |
3250 | ||
6a2b6326 | 3251 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac | 3252 | { |
9497f5ac | 3253 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) |
6885131b | 3254 | && !S_CAN_BE_REDEFINED (symbolP)) |
9497f5ac NC |
3255 | { |
3256 | as_bad (_("symbol `%s' is already defined"), name); | |
3257 | symbolP = symbol_clone (symbolP, 0); | |
3258 | } | |
3259 | /* If the symbol is volatile, copy the symbol and replace the | |
3260 | original with the copy, so that previous uses of the symbol will | |
3261 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3262 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3263 | symbolP = symbol_clone (symbolP, 1); |
3264 | } | |
3265 | ||
3266 | if (mode == 0) | |
3267 | S_SET_VOLATILE (symbolP); | |
3268 | else if (mode < 0) | |
3269 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3270 | |
3271 | pseudo_set (symbolP); | |
be95a9c1 AM |
3272 | } |
3273 | ||
9497f5ac NC |
3274 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3275 | then this is .equiv, and it is an error if the symbol is already | |
3276 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3277 | reference. */ | |
252b5132 | 3278 | |
041ff4dd | 3279 | void |
39e6acbd | 3280 | s_set (int equiv) |
252b5132 | 3281 | { |
be95a9c1 | 3282 | char *name; |
252b5132 | 3283 | |
041ff4dd NC |
3284 | /* Especial apologies for the random logic: |
3285 | this just grew, and could be parsed much more simply! | |
3286 | Dean in haste. */ | |
7bfd842d NC |
3287 | if ((name = read_symbol_name ()) == NULL) |
3288 | return; | |
252b5132 RH |
3289 | |
3290 | if (*input_line_pointer != ',') | |
3291 | { | |
0e389e77 | 3292 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 | 3293 | ignore_rest_of_line (); |
7bfd842d | 3294 | free (name); |
252b5132 RH |
3295 | return; |
3296 | } | |
3297 | ||
3298 | input_line_pointer++; | |
be95a9c1 | 3299 | assign_symbol (name, equiv); |
31d20a21 | 3300 | demand_empty_rest_of_line (); |
7bfd842d | 3301 | free (name); |
041ff4dd | 3302 | } |
252b5132 | 3303 | |
041ff4dd | 3304 | void |
39e6acbd | 3305 | s_space (int mult) |
252b5132 RH |
3306 | { |
3307 | expressionS exp; | |
3308 | expressionS val; | |
3309 | char *p = 0; | |
3310 | char *stop = NULL; | |
fb25138b | 3311 | char stopc = 0; |
252b5132 RH |
3312 | int bytes; |
3313 | ||
3314 | #ifdef md_flush_pending_output | |
3315 | md_flush_pending_output (); | |
3316 | #endif | |
3317 | ||
cc3f603a JM |
3318 | #ifdef md_cons_align |
3319 | md_cons_align (1); | |
3320 | #endif | |
3321 | ||
252b5132 RH |
3322 | if (flag_mri) |
3323 | stop = mri_comment_field (&stopc); | |
3324 | ||
3325 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3326 | this is ds.b. */ | |
3327 | if (flag_m68k_mri && mult > 1) | |
3328 | { | |
3329 | if (now_seg == absolute_section) | |
3330 | { | |
3331 | abs_section_offset += abs_section_offset & 1; | |
3332 | if (line_label != NULL) | |
3333 | S_SET_VALUE (line_label, abs_section_offset); | |
3334 | } | |
3335 | else if (mri_common_symbol != NULL) | |
3336 | { | |
91d6fa6a | 3337 | valueT mri_val; |
252b5132 | 3338 | |
91d6fa6a NC |
3339 | mri_val = S_GET_VALUE (mri_common_symbol); |
3340 | if ((mri_val & 1) != 0) | |
252b5132 | 3341 | { |
91d6fa6a | 3342 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3343 | if (line_label != NULL) |
3344 | { | |
2b47531b ILT |
3345 | expressionS *symexp; |
3346 | ||
3347 | symexp = symbol_get_value_expression (line_label); | |
3348 | know (symexp->X_op == O_symbol); | |
3349 | know (symexp->X_add_symbol == mri_common_symbol); | |
3350 | symexp->X_add_number += 1; | |
252b5132 RH |
3351 | } |
3352 | } | |
3353 | } | |
3354 | else | |
3355 | { | |
3356 | do_align (1, (char *) NULL, 0, 0); | |
3357 | if (line_label != NULL) | |
3358 | { | |
2b47531b | 3359 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3360 | S_SET_VALUE (line_label, frag_now_fix ()); |
3361 | } | |
3362 | } | |
3363 | } | |
3364 | ||
3365 | bytes = mult; | |
3366 | ||
3367 | expression (&exp); | |
3368 | ||
3369 | SKIP_WHITESPACE (); | |
3370 | if (*input_line_pointer == ',') | |
3371 | { | |
3372 | ++input_line_pointer; | |
3373 | expression (&val); | |
3374 | } | |
3375 | else | |
3376 | { | |
3377 | val.X_op = O_constant; | |
3378 | val.X_add_number = 0; | |
3379 | } | |
3380 | ||
ec9ab52c JB |
3381 | if ((val.X_op != O_constant |
3382 | || val.X_add_number < - 0x80 | |
3383 | || val.X_add_number > 0xff | |
3384 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3385 | && (now_seg != absolute_section && !in_bss ())) | |
252b5132 | 3386 | { |
9497f5ac | 3387 | resolve_expression (&exp); |
252b5132 | 3388 | if (exp.X_op != O_constant) |
0e389e77 | 3389 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3390 | else |
3391 | { | |
3392 | offsetT i; | |
3393 | ||
3394 | if (mult == 0) | |
3395 | mult = 1; | |
3396 | bytes = mult * exp.X_add_number; | |
3397 | for (i = 0; i < exp.X_add_number; i++) | |
3398 | emit_expr (&val, mult); | |
3399 | } | |
3400 | } | |
3401 | else | |
3402 | { | |
9497f5ac NC |
3403 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3404 | resolve_expression (&exp); | |
3405 | ||
252b5132 RH |
3406 | if (exp.X_op == O_constant) |
3407 | { | |
a4a151e6 | 3408 | offsetT repeat; |
252b5132 RH |
3409 | |
3410 | repeat = exp.X_add_number; | |
3411 | if (mult) | |
3412 | repeat *= mult; | |
3413 | bytes = repeat; | |
3414 | if (repeat <= 0) | |
3415 | { | |
2d150871 RO |
3416 | if (!flag_mri) |
3417 | as_warn (_(".space repeat count is zero, ignored")); | |
3418 | else if (repeat < 0) | |
252b5132 RH |
3419 | as_warn (_(".space repeat count is negative, ignored")); |
3420 | goto getout; | |
3421 | } | |
3422 | ||
3423 | /* If we are in the absolute section, just bump the offset. */ | |
3424 | if (now_seg == absolute_section) | |
3425 | { | |
ec9ab52c JB |
3426 | if (val.X_op != O_constant || val.X_add_number != 0) |
3427 | as_warn (_("ignoring fill value in absolute section")); | |
252b5132 RH |
3428 | abs_section_offset += repeat; |
3429 | goto getout; | |
3430 | } | |
3431 | ||
3432 | /* If we are secretly in an MRI common section, then | |
3433 | creating space just increases the size of the common | |
3434 | symbol. */ | |
3435 | if (mri_common_symbol != NULL) | |
3436 | { | |
3437 | S_SET_VALUE (mri_common_symbol, | |
3438 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3439 | goto getout; | |
3440 | } | |
3441 | ||
3442 | if (!need_pass_2) | |
3443 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3444 | (offsetT) repeat, (char *) 0); | |
3445 | } | |
3446 | else | |
3447 | { | |
3448 | if (now_seg == absolute_section) | |
3449 | { | |
3450 | as_bad (_("space allocation too complex in absolute section")); | |
3451 | subseg_set (text_section, 0); | |
3452 | } | |
f0e652b4 | 3453 | |
252b5132 RH |
3454 | if (mri_common_symbol != NULL) |
3455 | { | |
3456 | as_bad (_("space allocation too complex in common section")); | |
3457 | mri_common_symbol = NULL; | |
3458 | } | |
f0e652b4 | 3459 | |
252b5132 RH |
3460 | if (!need_pass_2) |
3461 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3462 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3463 | } | |
3464 | ||
ec9ab52c JB |
3465 | if ((val.X_op != O_constant || val.X_add_number != 0) && in_bss ()) |
3466 | as_warn (_("ignoring fill value in section `%s'"), | |
3467 | segment_name (now_seg)); | |
3468 | else if (p) | |
252b5132 RH |
3469 | *p = val.X_add_number; |
3470 | } | |
3471 | ||
3472 | getout: | |
3473 | ||
3474 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3475 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3476 | or dcb.b. */ | |
3477 | if (flag_mri && (bytes & 1) != 0) | |
3478 | mri_pending_align = 1; | |
3479 | ||
3480 | demand_empty_rest_of_line (); | |
3481 | ||
3482 | if (flag_mri) | |
3483 | mri_comment_end (stop, stopc); | |
3484 | } | |
3485 | ||
3486 | /* This is like s_space, but the value is a floating point number with | |
3487 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3488 | friends. */ | |
3489 | ||
3490 | void | |
39e6acbd | 3491 | s_float_space (int float_type) |
252b5132 RH |
3492 | { |
3493 | offsetT count; | |
3494 | int flen; | |
3495 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3496 | char *stop = NULL; | |
fb25138b | 3497 | char stopc = 0; |
252b5132 | 3498 | |
cc3f603a JM |
3499 | #ifdef md_cons_align |
3500 | md_cons_align (1); | |
3501 | #endif | |
3502 | ||
252b5132 RH |
3503 | if (flag_mri) |
3504 | stop = mri_comment_field (&stopc); | |
3505 | ||
3506 | count = get_absolute_expression (); | |
3507 | ||
3508 | SKIP_WHITESPACE (); | |
3509 | if (*input_line_pointer != ',') | |
3510 | { | |
3511 | as_bad (_("missing value")); | |
3512 | ignore_rest_of_line (); | |
3513 | if (flag_mri) | |
3514 | mri_comment_end (stop, stopc); | |
3515 | return; | |
3516 | } | |
3517 | ||
3518 | ++input_line_pointer; | |
3519 | ||
3520 | SKIP_WHITESPACE (); | |
3521 | ||
3522 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3523 | * letter is legal. */ | |
3524 | if (input_line_pointer[0] == '0' | |
3882b010 | 3525 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3526 | input_line_pointer += 2; |
3527 | ||
3528 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3529 | with the exact digits specified. */ | |
3530 | if (input_line_pointer[0] == ':') | |
3531 | { | |
3532 | flen = hex_float (float_type, temp); | |
3533 | if (flen < 0) | |
3534 | { | |
3535 | ignore_rest_of_line (); | |
3536 | if (flag_mri) | |
3537 | mri_comment_end (stop, stopc); | |
3538 | return; | |
3539 | } | |
3540 | } | |
3541 | else | |
3542 | { | |
3543 | char *err; | |
3544 | ||
3545 | err = md_atof (float_type, temp, &flen); | |
3546 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3547 | know (err != NULL || flen > 0); |
252b5132 RH |
3548 | if (err) |
3549 | { | |
0e389e77 | 3550 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3551 | ignore_rest_of_line (); |
3552 | if (flag_mri) | |
3553 | mri_comment_end (stop, stopc); | |
3554 | return; | |
3555 | } | |
3556 | } | |
3557 | ||
3558 | while (--count >= 0) | |
3559 | { | |
3560 | char *p; | |
3561 | ||
3562 | p = frag_more (flen); | |
3563 | memcpy (p, temp, (unsigned int) flen); | |
3564 | } | |
3565 | ||
3566 | demand_empty_rest_of_line (); | |
3567 | ||
3568 | if (flag_mri) | |
3569 | mri_comment_end (stop, stopc); | |
3570 | } | |
3571 | ||
3572 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3573 | ||
3574 | void | |
39e6acbd | 3575 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3576 | { |
3577 | char *stop = NULL; | |
fb25138b | 3578 | char stopc = 0; |
252b5132 RH |
3579 | |
3580 | if (flag_mri) | |
3581 | stop = mri_comment_field (&stopc); | |
3582 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3583 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3584 | /* The ELF backend needs to know that we are changing sections, so | |
3585 | that .previous works correctly. */ | |
f43abd2b | 3586 | if (IS_ELF) |
a2902af6 TS |
3587 | obj_elf_section_change_hook (); |
3588 | #endif | |
252b5132 RH |
3589 | subseg_set (absolute_section, 0); |
3590 | demand_empty_rest_of_line (); | |
3591 | if (flag_mri) | |
3592 | mri_comment_end (stop, stopc); | |
3593 | } | |
3594 | ||
3595 | void | |
39e6acbd | 3596 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3597 | { |
3d540e93 | 3598 | int temp; |
252b5132 RH |
3599 | |
3600 | temp = get_absolute_expression (); | |
3601 | subseg_set (text_section, (subsegT) temp); | |
3602 | demand_empty_rest_of_line (); | |
041ff4dd | 3603 | } |
06e77878 AO |
3604 | |
3605 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3606 | referenced directly, will cause y to become a weak symbol. */ | |
3607 | void | |
3608 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3609 | { | |
3610 | char *name; | |
06e77878 AO |
3611 | symbolS *symbolP; |
3612 | symbolS *symbolP2; | |
3613 | expressionS exp; | |
3614 | ||
7bfd842d NC |
3615 | if ((name = read_symbol_name ()) == NULL) |
3616 | return; | |
06e77878 AO |
3617 | |
3618 | symbolP = symbol_find_or_make (name); | |
3619 | ||
b54788f8 AO |
3620 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3621 | { | |
89cdfe57 | 3622 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3623 | { |
3624 | as_bad (_("symbol `%s' is already defined"), name); | |
7bfd842d | 3625 | goto err_out; |
92757bc9 | 3626 | } |
89cdfe57 | 3627 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3628 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3629 | } |
3630 | ||
06e77878 AO |
3631 | SKIP_WHITESPACE (); |
3632 | ||
3633 | if (*input_line_pointer != ',') | |
3634 | { | |
06e77878 | 3635 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 3636 | goto err_out; |
06e77878 AO |
3637 | } |
3638 | ||
3639 | input_line_pointer++; | |
3640 | ||
3641 | SKIP_WHITESPACE (); | |
7bfd842d | 3642 | free (name); |
06e77878 | 3643 | |
7bfd842d NC |
3644 | if ((name = read_symbol_name ()) == NULL) |
3645 | return; | |
06e77878 AO |
3646 | |
3647 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3648 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3649 | { | |
3650 | symbolP2 = symbol_find_or_make (name); | |
3651 | S_SET_WEAKREFD (symbolP2); | |
3652 | } | |
3653 | else | |
3654 | { | |
3655 | symbolS *symp = symbolP2; | |
3656 | ||
3657 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3658 | { | |
3659 | expressionS *expP = symbol_get_value_expression (symp); | |
3660 | ||
9c2799c2 | 3661 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3662 | && expP->X_add_number == 0); |
3663 | symp = expP->X_add_symbol; | |
3664 | } | |
3665 | if (symp == symbolP) | |
3666 | { | |
3667 | char *loop; | |
3668 | ||
3669 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3670 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3671 | |
3672 | symp = symbolP2; | |
3673 | while (symp != symbolP) | |
3674 | { | |
3675 | char *old_loop = loop; | |
7bfd842d | 3676 | |
06e77878 | 3677 | symp = symbol_get_value_expression (symp)->X_add_symbol; |
1bf57e9f AM |
3678 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3679 | (const char *) NULL); | |
06e77878 AO |
3680 | free (old_loop); |
3681 | } | |
3682 | ||
3683 | as_bad (_("%s: would close weakref loop: %s"), | |
3684 | S_GET_NAME (symbolP), loop); | |
3685 | ||
3686 | free (loop); | |
7bfd842d | 3687 | free (name); |
06e77878 AO |
3688 | ignore_rest_of_line (); |
3689 | return; | |
3690 | } | |
3691 | ||
3692 | /* Short-circuiting instead of just checking here might speed | |
3693 | things up a tiny little bit, but loop error messages would | |
3694 | miss intermediate links. */ | |
3695 | /* symbolP2 = symp; */ | |
3696 | } | |
3697 | ||
06e77878 AO |
3698 | memset (&exp, 0, sizeof (exp)); |
3699 | exp.X_op = O_symbol; | |
3700 | exp.X_add_symbol = symbolP2; | |
3701 | ||
3702 | S_SET_SEGMENT (symbolP, undefined_section); | |
3703 | symbol_set_value_expression (symbolP, &exp); | |
3704 | symbol_set_frag (symbolP, &zero_address_frag); | |
3705 | S_SET_WEAKREFR (symbolP); | |
3706 | ||
3707 | demand_empty_rest_of_line (); | |
7bfd842d NC |
3708 | free (name); |
3709 | return; | |
3710 | ||
3711 | err_out: | |
3712 | ignore_rest_of_line (); | |
3713 | free (name); | |
3714 | return; | |
06e77878 | 3715 | } |
252b5132 | 3716 | \f |
c95b35a9 NS |
3717 | |
3718 | /* Verify that we are at the end of a line. If not, issue an error and | |
3719 | skip to EOL. */ | |
3720 | ||
041ff4dd | 3721 | void |
39e6acbd | 3722 | demand_empty_rest_of_line (void) |
252b5132 RH |
3723 | { |
3724 | SKIP_WHITESPACE (); | |
3725 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3726 | input_line_pointer++; |
252b5132 | 3727 | else |
252b5132 | 3728 | { |
3882b010 | 3729 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3730 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3731 | *input_line_pointer); |
252b5132 | 3732 | else |
c95b35a9 | 3733 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3734 | *input_line_pointer); |
c95b35a9 | 3735 | ignore_rest_of_line (); |
252b5132 | 3736 | } |
fa94de6b | 3737 | |
c95b35a9 NS |
3738 | /* Return pointing just after end-of-line. */ |
3739 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3740 | } | |
3741 | ||
3742 | /* Silently advance to the end of line. Use this after already having | |
3743 | issued an error about something bad. */ | |
3744 | ||
3745 | void | |
3746 | ignore_rest_of_line (void) | |
3747 | { | |
3748 | while (input_line_pointer < buffer_limit | |
3749 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3750 | input_line_pointer++; | |
f0e652b4 | 3751 | |
041ff4dd NC |
3752 | input_line_pointer++; |
3753 | ||
3754 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3755 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3756 | } | |
3757 | ||
be95a9c1 AM |
3758 | /* Sets frag for given symbol to zero_address_frag, except when the |
3759 | symbol frag is already set to a dummy listing frag. */ | |
3760 | ||
3761 | static void | |
3762 | set_zero_frag (symbolS *symbolP) | |
3763 | { | |
3764 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3765 | symbol_set_frag (symbolP, &zero_address_frag); | |
3766 | } | |
3767 | ||
041ff4dd | 3768 | /* In: Pointer to a symbol. |
d6415f6c | 3769 | Input_line_pointer->expression. |
f0e652b4 | 3770 | |
041ff4dd | 3771 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3772 | Tried to set symbol to value of expression. |
3773 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3774 | |
252b5132 | 3775 | void |
39e6acbd | 3776 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3777 | { |
3778 | expressionS exp; | |
be95a9c1 | 3779 | segT seg; |
252b5132 | 3780 | |
041ff4dd | 3781 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3782 | |
9497f5ac NC |
3783 | if (!S_IS_FORWARD_REF (symbolP)) |
3784 | (void) expression (&exp); | |
3785 | else | |
3786 | (void) deferred_expression (&exp); | |
252b5132 RH |
3787 | |
3788 | if (exp.X_op == O_illegal) | |
0e389e77 | 3789 | as_bad (_("illegal expression")); |
252b5132 | 3790 | else if (exp.X_op == O_absent) |
0e389e77 | 3791 | as_bad (_("missing expression")); |
252b5132 RH |
3792 | else if (exp.X_op == O_big) |
3793 | { | |
3794 | if (exp.X_add_number > 0) | |
0e389e77 | 3795 | as_bad (_("bignum invalid")); |
252b5132 | 3796 | else |
0e389e77 | 3797 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3798 | } |
3799 | else if (exp.X_op == O_subtract | |
9497f5ac | 3800 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3801 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3802 | && (symbol_get_frag (exp.X_add_symbol) |
3803 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3804 | { |
3805 | exp.X_op = O_constant; | |
3806 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3807 | - S_GET_VALUE (exp.X_op_symbol)); | |
3808 | } | |
3809 | ||
be95a9c1 AM |
3810 | if (symbol_section_p (symbolP)) |
3811 | { | |
3812 | as_bad ("attempt to set value of section symbol"); | |
3813 | return; | |
3814 | } | |
be95a9c1 | 3815 | |
252b5132 RH |
3816 | switch (exp.X_op) |
3817 | { | |
3818 | case O_illegal: | |
3819 | case O_absent: | |
3820 | case O_big: | |
3821 | exp.X_add_number = 0; | |
3822 | /* Fall through. */ | |
3823 | case O_constant: | |
3824 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3825 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3826 | set_zero_frag (symbolP); |
252b5132 RH |
3827 | break; |
3828 | ||
3829 | case O_register: | |
97c4f2d9 | 3830 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3831 | if (S_IS_EXTERNAL (symbolP)) |
3832 | { | |
3833 | as_bad ("can't equate global symbol `%s' with register name", | |
3834 | S_GET_NAME (symbolP)); | |
3835 | return; | |
3836 | } | |
97c4f2d9 | 3837 | #endif |
252b5132 RH |
3838 | S_SET_SEGMENT (symbolP, reg_section); |
3839 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3840 | set_zero_frag (symbolP); |
db557034 | 3841 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3842 | break; |
3843 | ||
3844 | case O_symbol: | |
be95a9c1 AM |
3845 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3846 | /* For x=undef+const, create an expression symbol. | |
3847 | For x=x+const, just update x except when x is an undefined symbol | |
3848 | For x=defined+const, evaluate x. */ | |
3849 | if (symbolP == exp.X_add_symbol | |
3850 | && (seg != undefined_section | |
3851 | || !symbol_constant_p (symbolP))) | |
3852 | { | |
3853 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3854 | break; | |
3855 | } | |
9497f5ac | 3856 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3857 | { |
3858 | symbolS *s = exp.X_add_symbol; | |
3859 | ||
60938e80 L |
3860 | if (S_IS_COMMON (s)) |
3861 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3862 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3863 | ||
be95a9c1 AM |
3864 | S_SET_SEGMENT (symbolP, seg); |
3865 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3866 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3867 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3868 | break; |
252b5132 | 3869 | } |
66bd02d3 AM |
3870 | S_SET_SEGMENT (symbolP, undefined_section); |
3871 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 3872 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
3873 | set_zero_frag (symbolP); |
3874 | break; | |
252b5132 RH |
3875 | |
3876 | default: | |
aba4aa7d AM |
3877 | /* The value is some complex expression. */ |
3878 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3879 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3880 | set_zero_frag (symbolP); |
252b5132 RH |
3881 | break; |
3882 | } | |
3883 | } | |
3884 | \f | |
d6415f6c | 3885 | /* cons() |
f0e652b4 | 3886 | |
041ff4dd NC |
3887 | CONStruct more frag of .bytes, or .words etc. |
3888 | Should need_pass_2 be 1 then emit no frag(s). | |
3889 | This understands EXPRESSIONS. | |
f0e652b4 | 3890 | |
041ff4dd | 3891 | Bug (?) |
f0e652b4 | 3892 | |
041ff4dd NC |
3893 | This has a split personality. We use expression() to read the |
3894 | value. We can detect if the value won't fit in a byte or word. | |
3895 | But we can't detect if expression() discarded significant digits | |
3896 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3897 | |
3898 | /* Select a parser for cons expressions. */ | |
3899 | ||
3900 | /* Some targets need to parse the expression in various fancy ways. | |
3901 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3902 | (for example, the HPPA does this). Otherwise, you can define | |
3903 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3904 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3905 | are defined, which is the normal case, then only simple expressions | |
3906 | are permitted. */ | |
3907 | ||
abd63a32 | 3908 | #ifdef TC_M68K |
252b5132 | 3909 | static void |
39e6acbd | 3910 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3911 | #endif |
252b5132 RH |
3912 | |
3913 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3914 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
62ebcb5c AM |
3915 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3916 | (parse_bitfield_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
041ff4dd | 3917 | static void |
39e6acbd | 3918 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3919 | #endif |
3920 | #ifdef REPEAT_CONS_EXPRESSIONS | |
62ebcb5c AM |
3921 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3922 | (parse_repeat_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 | 3923 | static void |
39e6acbd | 3924 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3925 | #endif |
3926 | ||
3927 | /* If we haven't gotten one yet, just call expression. */ | |
3928 | #ifndef TC_PARSE_CONS_EXPRESSION | |
62ebcb5c AM |
3929 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
3930 | (expression (EXP), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 RH |
3931 | #endif |
3932 | #endif | |
3933 | ||
cdfbf930 | 3934 | void |
b41b1f95 L |
3935 | do_parse_cons_expression (expressionS *exp, |
3936 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 | 3937 | { |
62ebcb5c | 3938 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
cdfbf930 RH |
3939 | } |
3940 | ||
3941 | ||
041ff4dd NC |
3942 | /* Worker to do .byte etc statements. |
3943 | Clobbers input_line_pointer and checks end-of-line. */ | |
3944 | ||
3945 | static void | |
3d540e93 | 3946 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 3947 | int rva) |
252b5132 RH |
3948 | { |
3949 | int c; | |
3950 | expressionS exp; | |
3951 | char *stop = NULL; | |
fb25138b | 3952 | char stopc = 0; |
252b5132 RH |
3953 | |
3954 | #ifdef md_flush_pending_output | |
3955 | md_flush_pending_output (); | |
3956 | #endif | |
3957 | ||
3958 | if (flag_mri) | |
3959 | stop = mri_comment_field (&stopc); | |
3960 | ||
3961 | if (is_it_end_of_statement ()) | |
3962 | { | |
3963 | demand_empty_rest_of_line (); | |
3964 | if (flag_mri) | |
3965 | mri_comment_end (stop, stopc); | |
3966 | return; | |
3967 | } | |
3968 | ||
cc1bc22a AM |
3969 | #ifdef TC_ADDRESS_BYTES |
3970 | if (nbytes == 0) | |
3971 | nbytes = TC_ADDRESS_BYTES (); | |
3972 | #endif | |
3973 | ||
252b5132 RH |
3974 | #ifdef md_cons_align |
3975 | md_cons_align (nbytes); | |
3976 | #endif | |
3977 | ||
3978 | c = 0; | |
3979 | do | |
3980 | { | |
62ebcb5c | 3981 | TC_PARSE_CONS_RETURN_TYPE ret = TC_PARSE_CONS_RETURN_NONE; |
bf7279d5 AM |
3982 | #ifdef TC_CONS_FIX_CHECK |
3983 | fixS **cur_fix = &frchain_now->fix_tail; | |
3984 | ||
3985 | if (*cur_fix != NULL) | |
3986 | cur_fix = &(*cur_fix)->fx_next; | |
3987 | #endif | |
62ebcb5c | 3988 | |
abd63a32 | 3989 | #ifdef TC_M68K |
252b5132 RH |
3990 | if (flag_m68k_mri) |
3991 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3992 | else | |
abd63a32 | 3993 | #endif |
fa94de6b | 3994 | { |
d02603dc | 3995 | #if 0 |
847d4311 NS |
3996 | if (*input_line_pointer == '"') |
3997 | { | |
3998 | as_bad (_("unexpected `\"' in expression")); | |
3999 | ignore_rest_of_line (); | |
4000 | return; | |
4001 | } | |
d02603dc | 4002 | #endif |
62ebcb5c | 4003 | ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
847d4311 | 4004 | } |
252b5132 RH |
4005 | |
4006 | if (rva) | |
4007 | { | |
4008 | if (exp.X_op == O_symbol) | |
4009 | exp.X_op = O_symbol_rva; | |
4010 | else | |
4011 | as_fatal (_("rva without symbol")); | |
4012 | } | |
62ebcb5c | 4013 | emit_expr_with_reloc (&exp, (unsigned int) nbytes, ret); |
bf7279d5 AM |
4014 | #ifdef TC_CONS_FIX_CHECK |
4015 | TC_CONS_FIX_CHECK (&exp, nbytes, *cur_fix); | |
4016 | #endif | |
252b5132 RH |
4017 | ++c; |
4018 | } | |
4019 | while (*input_line_pointer++ == ','); | |
4020 | ||
4021 | /* In MRI mode, after an odd number of bytes, we must align to an | |
4022 | even word boundary, unless the next instruction is a dc.b, ds.b | |
4023 | or dcb.b. */ | |
4024 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
4025 | mri_pending_align = 1; | |
4026 | ||
041ff4dd | 4027 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
4028 | |
4029 | demand_empty_rest_of_line (); | |
4030 | ||
4031 | if (flag_mri) | |
4032 | mri_comment_end (stop, stopc); | |
4033 | } | |
4034 | ||
252b5132 | 4035 | void |
39e6acbd | 4036 | cons (int size) |
252b5132 RH |
4037 | { |
4038 | cons_worker (size, 0); | |
4039 | } | |
4040 | ||
041ff4dd | 4041 | void |
39e6acbd | 4042 | s_rva (int size) |
252b5132 RH |
4043 | { |
4044 | cons_worker (size, 1); | |
4045 | } | |
4046 | ||
05e9452c AM |
4047 | /* .reloc offset, reloc_name, symbol+addend. */ |
4048 | ||
b38ead21 | 4049 | static void |
05e9452c AM |
4050 | s_reloc (int ignore ATTRIBUTE_UNUSED) |
4051 | { | |
4052 | char *stop = NULL; | |
4053 | char stopc = 0; | |
4054 | expressionS exp; | |
4055 | char *r_name; | |
4056 | int c; | |
4057 | struct reloc_list *reloc; | |
cd0bbe6e TS |
4058 | struct _bfd_rel { const char * name; bfd_reloc_code_real_type code; }; |
4059 | static struct _bfd_rel bfd_relocs[] = | |
4060 | { | |
740bdc67 | 4061 | { "NONE", BFD_RELOC_NONE }, |
cd0bbe6e | 4062 | { "8", BFD_RELOC_8 }, |
740bdc67 AM |
4063 | { "16", BFD_RELOC_16 }, |
4064 | { "32", BFD_RELOC_32 }, | |
4065 | { "64", BFD_RELOC_64 } | |
4066 | }; | |
05e9452c | 4067 | |
1e9cc1c2 | 4068 | reloc = (struct reloc_list *) xmalloc (sizeof (*reloc)); |
05e9452c AM |
4069 | |
4070 | if (flag_mri) | |
4071 | stop = mri_comment_field (&stopc); | |
4072 | ||
4073 | expression (&exp); | |
4074 | switch (exp.X_op) | |
4075 | { | |
4076 | case O_illegal: | |
4077 | case O_absent: | |
4078 | case O_big: | |
4079 | case O_register: | |
4080 | as_bad (_("missing or bad offset expression")); | |
4081 | goto err_out; | |
4082 | case O_constant: | |
4083 | exp.X_add_symbol = section_symbol (now_seg); | |
4084 | exp.X_op = O_symbol; | |
4085 | /* Fall thru */ | |
4086 | case O_symbol: | |
4087 | if (exp.X_add_number == 0) | |
4088 | { | |
4089 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
4090 | break; | |
4091 | } | |
4092 | /* Fall thru */ | |
4093 | default: | |
4094 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
4095 | break; | |
4096 | } | |
4097 | ||
4098 | SKIP_WHITESPACE (); | |
4099 | if (*input_line_pointer != ',') | |
4100 | { | |
4101 | as_bad (_("missing reloc type")); | |
4102 | goto err_out; | |
4103 | } | |
4104 | ||
4105 | ++input_line_pointer; | |
4106 | SKIP_WHITESPACE (); | |
d02603dc | 4107 | c = get_symbol_name (& r_name); |
740bdc67 AM |
4108 | if (strncasecmp (r_name, "BFD_RELOC_", 10) == 0) |
4109 | { | |
4110 | unsigned int i; | |
4111 | ||
4112 | for (reloc->u.a.howto = NULL, i = 0; i < ARRAY_SIZE (bfd_relocs); i++) | |
4113 | if (strcasecmp (r_name + 10, bfd_relocs[i].name) == 0) | |
4114 | { | |
4115 | reloc->u.a.howto = bfd_reloc_type_lookup (stdoutput, | |
4116 | bfd_relocs[i].code); | |
4117 | break; | |
4118 | } | |
4119 | } | |
4120 | else | |
4121 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
05e9452c AM |
4122 | *input_line_pointer = c; |
4123 | if (reloc->u.a.howto == NULL) | |
4124 | { | |
4125 | as_bad (_("unrecognized reloc type")); | |
4126 | goto err_out; | |
4127 | } | |
4128 | ||
4129 | exp.X_op = O_absent; | |
d02603dc | 4130 | SKIP_WHITESPACE_AFTER_NAME (); |
05e9452c AM |
4131 | if (*input_line_pointer == ',') |
4132 | { | |
4133 | ++input_line_pointer; | |
c188d0bb | 4134 | expression (&exp); |
05e9452c AM |
4135 | } |
4136 | switch (exp.X_op) | |
4137 | { | |
4138 | case O_illegal: | |
4139 | case O_big: | |
4140 | case O_register: | |
4141 | as_bad (_("bad reloc expression")); | |
4142 | err_out: | |
4143 | ignore_rest_of_line (); | |
4144 | free (reloc); | |
4145 | if (flag_mri) | |
4146 | mri_comment_end (stop, stopc); | |
4147 | return; | |
4148 | case O_absent: | |
4149 | reloc->u.a.sym = NULL; | |
4150 | reloc->u.a.addend = 0; | |
4151 | break; | |
4152 | case O_constant: | |
4153 | reloc->u.a.sym = NULL; | |
4154 | reloc->u.a.addend = exp.X_add_number; | |
4155 | break; | |
4156 | case O_symbol: | |
4157 | reloc->u.a.sym = exp.X_add_symbol; | |
4158 | reloc->u.a.addend = exp.X_add_number; | |
4159 | break; | |
4160 | default: | |
4161 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4162 | reloc->u.a.addend = 0; | |
4163 | break; | |
4164 | } | |
4165 | ||
4166 | as_where (&reloc->file, &reloc->line); | |
4167 | reloc->next = reloc_list; | |
4168 | reloc_list = reloc; | |
4169 | ||
4170 | demand_empty_rest_of_line (); | |
4171 | if (flag_mri) | |
4172 | mri_comment_end (stop, stopc); | |
4173 | } | |
4174 | ||
252b5132 RH |
4175 | /* Put the contents of expression EXP into the object file using |
4176 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4177 | ||
4178 | void | |
39e6acbd | 4179 | emit_expr (expressionS *exp, unsigned int nbytes) |
62ebcb5c AM |
4180 | { |
4181 | emit_expr_with_reloc (exp, nbytes, TC_PARSE_CONS_RETURN_NONE); | |
4182 | } | |
4183 | ||
4184 | void | |
4185 | emit_expr_with_reloc (expressionS *exp, | |
4186 | unsigned int nbytes, | |
4187 | TC_PARSE_CONS_RETURN_TYPE reloc) | |
252b5132 RH |
4188 | { |
4189 | operatorT op; | |
3d540e93 | 4190 | char *p; |
252b5132 RH |
4191 | valueT extra_digit = 0; |
4192 | ||
4193 | /* Don't do anything if we are going to make another pass. */ | |
4194 | if (need_pass_2) | |
4195 | return; | |
4196 | ||
4bc25101 | 4197 | frag_grow (nbytes); |
ed7d5d1a | 4198 | dot_value = frag_now_fix (); |
8e723a10 | 4199 | dot_frag = frag_now; |
ed7d5d1a | 4200 | |
252b5132 RH |
4201 | #ifndef NO_LISTING |
4202 | #ifdef OBJ_ELF | |
4203 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4204 | appear as a four byte positive constant in the .line section, | |
4205 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4206 | { | |
4207 | static int dwarf_line = -1; | |
4208 | ||
4209 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4210 | dwarf_line = -1; | |
4211 | else if (dwarf_line >= 0 | |
4212 | && nbytes == 2 | |
4213 | && exp->X_op == O_constant | |
4214 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4215 | listing_source_line ((unsigned int) dwarf_line); | |
4216 | else if (nbytes == 4 | |
4217 | && exp->X_op == O_constant | |
4218 | && exp->X_add_number >= 0) | |
4219 | dwarf_line = exp->X_add_number; | |
4220 | else | |
4221 | dwarf_line = -1; | |
4222 | } | |
4223 | ||
4224 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4225 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4226 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4227 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4228 | file. We look for that case here. */ | |
4229 | { | |
4230 | static int dwarf_file = 0; | |
4231 | ||
4232 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4233 | dwarf_file = 0; | |
4234 | else if (dwarf_file == 0 | |
4235 | && nbytes == 2 | |
4236 | && exp->X_op == O_constant | |
4237 | && exp->X_add_number == 0x11) | |
4238 | dwarf_file = 1; | |
4239 | else if (dwarf_file == 1 | |
4240 | && nbytes == 2 | |
4241 | && exp->X_op == O_constant | |
4242 | && exp->X_add_number == 0x12) | |
4243 | dwarf_file = 2; | |
4244 | else if (dwarf_file == 2 | |
4245 | && nbytes == 4) | |
4246 | dwarf_file = 3; | |
4247 | else if (dwarf_file == 3 | |
4248 | && nbytes == 2 | |
4249 | && exp->X_op == O_constant | |
4250 | && exp->X_add_number == 0x38) | |
4251 | dwarf_file = 4; | |
4252 | else | |
4253 | dwarf_file = 0; | |
4254 | ||
4255 | /* The variable dwarf_file_string tells stringer that the string | |
4256 | may be the name of the source file. */ | |
4257 | if (dwarf_file == 4) | |
4258 | dwarf_file_string = 1; | |
4259 | else | |
4260 | dwarf_file_string = 0; | |
4261 | } | |
4262 | #endif | |
4263 | #endif | |
4264 | ||
4265 | if (check_eh_frame (exp, &nbytes)) | |
4266 | return; | |
4267 | ||
4268 | op = exp->X_op; | |
4269 | ||
252b5132 RH |
4270 | /* Handle a negative bignum. */ |
4271 | if (op == O_uminus | |
4272 | && exp->X_add_number == 0 | |
2b47531b ILT |
4273 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4274 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4275 | { |
4276 | int i; | |
4277 | unsigned long carry; | |
4278 | ||
2b47531b | 4279 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4280 | |
4281 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4282 | carry = 1; | |
4283 | for (i = 0; i < exp->X_add_number; i++) | |
4284 | { | |
4285 | unsigned long next; | |
4286 | ||
041ff4dd | 4287 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4288 | & LITTLENUM_MASK) |
4289 | + carry); | |
4290 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4291 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4292 | } | |
4293 | ||
4294 | /* We can ignore any carry out, because it will be handled by | |
4295 | extra_digit if it is needed. */ | |
4296 | ||
4297 | extra_digit = (valueT) -1; | |
4298 | op = O_big; | |
4299 | } | |
4300 | ||
4301 | if (op == O_absent || op == O_illegal) | |
4302 | { | |
4303 | as_warn (_("zero assumed for missing expression")); | |
4304 | exp->X_add_number = 0; | |
4305 | op = O_constant; | |
4306 | } | |
4307 | else if (op == O_big && exp->X_add_number <= 0) | |
4308 | { | |
0e389e77 | 4309 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4310 | exp->X_add_number = 0; |
4311 | op = O_constant; | |
4312 | } | |
4313 | else if (op == O_register) | |
4314 | { | |
4315 | as_warn (_("register value used as expression")); | |
4316 | op = O_constant; | |
4317 | } | |
4318 | ||
ec9ab52c JB |
4319 | /* Allow `.word 0' in the absolute section. */ |
4320 | if (now_seg == absolute_section) | |
4321 | { | |
4322 | if (op != O_constant || exp->X_add_number != 0) | |
4323 | as_bad (_("attempt to store value in absolute section")); | |
4324 | abs_section_offset += nbytes; | |
4325 | return; | |
4326 | } | |
4327 | ||
4328 | /* Allow `.word 0' in BSS style sections. */ | |
4329 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
4330 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
4331 | segment_name (now_seg)); | |
4332 | ||
252b5132 RH |
4333 | p = frag_more ((int) nbytes); |
4334 | ||
62ebcb5c AM |
4335 | if (reloc != TC_PARSE_CONS_RETURN_NONE) |
4336 | { | |
4337 | emit_expr_fix (exp, nbytes, frag_now, p, reloc); | |
4338 | return; | |
4339 | } | |
4340 | ||
252b5132 RH |
4341 | #ifndef WORKING_DOT_WORD |
4342 | /* If we have the difference of two symbols in a word, save it on | |
4343 | the broken_words list. See the code in write.c. */ | |
4344 | if (op == O_subtract && nbytes == 2) | |
4345 | { | |
4346 | struct broken_word *x; | |
4347 | ||
4348 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
4349 | x->next_broken_word = broken_words; | |
4350 | broken_words = x; | |
4351 | x->seg = now_seg; | |
4352 | x->subseg = now_subseg; | |
4353 | x->frag = frag_now; | |
4354 | x->word_goes_here = p; | |
4355 | x->dispfrag = 0; | |
4356 | x->add = exp->X_add_symbol; | |
4357 | x->sub = exp->X_op_symbol; | |
4358 | x->addnum = exp->X_add_number; | |
4359 | x->added = 0; | |
dc59a897 | 4360 | x->use_jump = 0; |
252b5132 RH |
4361 | new_broken_words++; |
4362 | return; | |
4363 | } | |
4364 | #endif | |
4365 | ||
4366 | /* If we have an integer, but the number of bytes is too large to | |
4367 | pass to md_number_to_chars, handle it as a bignum. */ | |
4368 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4369 | { | |
e5604d79 | 4370 | extra_digit = exp->X_unsigned ? 0 : -1; |
956a6ba3 | 4371 | convert_to_bignum (exp, !exp->X_unsigned); |
e5604d79 | 4372 | op = O_big; |
252b5132 RH |
4373 | } |
4374 | ||
4375 | if (op == O_constant) | |
4376 | { | |
3d540e93 NC |
4377 | valueT get; |
4378 | valueT use; | |
4379 | valueT mask; | |
252b5132 | 4380 | valueT hibit; |
3d540e93 | 4381 | valueT unmask; |
252b5132 RH |
4382 | |
4383 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4384 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4385 | if (nbytes >= sizeof (valueT)) |
4386 | { | |
4387 | mask = 0; | |
4388 | if (nbytes > sizeof (valueT)) | |
4389 | hibit = 0; | |
4390 | else | |
4391 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4392 | } | |
4393 | else | |
4394 | { | |
041ff4dd | 4395 | /* Don't store these bits. */ |
252b5132 RH |
4396 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4397 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4398 | } | |
4399 | ||
041ff4dd | 4400 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4401 | |
4402 | #ifdef NEVER | |
4403 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4404 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4405 | #endif |
4406 | ||
4407 | get = exp->X_add_number; | |
4408 | use = get & unmask; | |
4409 | if ((get & mask) != 0 | |
4410 | && ((get & mask) != mask | |
4411 | || (get & hibit) == 0)) | |
041ff4dd | 4412 | { /* Leading bits contain both 0s & 1s. */ |
b6ac5419 | 4413 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4414 | #ifndef __MSVCRT__ |
5c612369 NC |
4415 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4416 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4417 | #else |
4418 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4419 | (unsigned long long) get, (unsigned long long) use); | |
4420 | #endif | |
b6ac5419 AM |
4421 | #else |
4422 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4423 | (unsigned long) get, (unsigned long) use); | |
4424 | #endif | |
252b5132 | 4425 | } |
041ff4dd | 4426 | /* Put bytes in right order. */ |
252b5132 RH |
4427 | md_number_to_chars (p, use, (int) nbytes); |
4428 | } | |
4429 | else if (op == O_big) | |
4430 | { | |
4431 | unsigned int size; | |
4432 | LITTLENUM_TYPE *nums; | |
4433 | ||
252b5132 RH |
4434 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4435 | if (nbytes < size) | |
4436 | { | |
93d90f46 AM |
4437 | int i = nbytes / CHARS_PER_LITTLENUM; |
4438 | if (i != 0) | |
4439 | { | |
4440 | LITTLENUM_TYPE sign = 0; | |
4441 | if ((generic_bignum[--i] | |
4442 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4443 | sign = ~(LITTLENUM_TYPE) 0; | |
4444 | while (++i < exp->X_add_number) | |
4445 | if (generic_bignum[i] != sign) | |
4446 | break; | |
4447 | } | |
4448 | if (i < exp->X_add_number) | |
4449 | as_warn (_("bignum truncated to %d bytes"), nbytes); | |
252b5132 RH |
4450 | size = nbytes; |
4451 | } | |
4452 | ||
93d90f46 AM |
4453 | if (nbytes == 1) |
4454 | { | |
4455 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4456 | return; | |
4457 | } | |
4458 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4459 | ||
252b5132 RH |
4460 | if (target_big_endian) |
4461 | { | |
4462 | while (nbytes > size) | |
4463 | { | |
4464 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4465 | nbytes -= CHARS_PER_LITTLENUM; | |
4466 | p += CHARS_PER_LITTLENUM; | |
4467 | } | |
4468 | ||
4469 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4470 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4471 | { |
4472 | --nums; | |
4473 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4474 | size -= CHARS_PER_LITTLENUM; | |
4475 | p += CHARS_PER_LITTLENUM; | |
4476 | } | |
4477 | } | |
4478 | else | |
4479 | { | |
4480 | nums = generic_bignum; | |
ceac3f62 | 4481 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4482 | { |
4483 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4484 | ++nums; | |
4485 | size -= CHARS_PER_LITTLENUM; | |
4486 | p += CHARS_PER_LITTLENUM; | |
4487 | nbytes -= CHARS_PER_LITTLENUM; | |
4488 | } | |
4489 | ||
ceac3f62 | 4490 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4491 | { |
4492 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4493 | nbytes -= CHARS_PER_LITTLENUM; | |
4494 | p += CHARS_PER_LITTLENUM; | |
4495 | } | |
4496 | } | |
4497 | } | |
4498 | else | |
62ebcb5c | 4499 | emit_expr_fix (exp, nbytes, frag_now, p, TC_PARSE_CONS_RETURN_NONE); |
7ddd14de BW |
4500 | } |
4501 | ||
4502 | void | |
62ebcb5c | 4503 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p, |
00c06fdc | 4504 | TC_PARSE_CONS_RETURN_TYPE r ATTRIBUTE_UNUSED) |
7ddd14de | 4505 | { |
62ebcb5c AM |
4506 | int offset = 0; |
4507 | unsigned int size = nbytes; | |
4508 | ||
4509 | memset (p, 0, size); | |
252b5132 | 4510 | |
7ddd14de | 4511 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4512 | |
252b5132 | 4513 | #ifdef TC_CONS_FIX_NEW |
62ebcb5c | 4514 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal + offset, size, exp, r); |
252b5132 | 4515 | #else |
62ebcb5c AM |
4516 | if (r != TC_PARSE_CONS_RETURN_NONE) |
4517 | { | |
4518 | reloc_howto_type *reloc_howto; | |
252b5132 | 4519 | |
62ebcb5c AM |
4520 | reloc_howto = bfd_reloc_type_lookup (stdoutput, r); |
4521 | size = bfd_get_reloc_size (reloc_howto); | |
4522 | ||
4523 | if (size > nbytes) | |
4524 | { | |
4525 | as_bad (_("%s relocations do not fit in %u bytes\n"), | |
4526 | reloc_howto->name, nbytes); | |
4527 | return; | |
4528 | } | |
4529 | else if (target_big_endian) | |
4530 | offset = nbytes - size; | |
4531 | } | |
4532 | else | |
4533 | switch (size) | |
7ddd14de BW |
4534 | { |
4535 | case 1: | |
4536 | r = BFD_RELOC_8; | |
4537 | break; | |
4538 | case 2: | |
4539 | r = BFD_RELOC_16; | |
4540 | break; | |
d4f4f3fb AM |
4541 | case 3: |
4542 | r = BFD_RELOC_24; | |
4543 | break; | |
7ddd14de BW |
4544 | case 4: |
4545 | r = BFD_RELOC_32; | |
4546 | break; | |
4547 | case 8: | |
4548 | r = BFD_RELOC_64; | |
4549 | break; | |
4550 | default: | |
62ebcb5c AM |
4551 | as_bad (_("unsupported BFD relocation size %u"), size); |
4552 | return; | |
252b5132 | 4553 | } |
62ebcb5c AM |
4554 | fix_new_exp (frag, p - frag->fr_literal + offset, size, |
4555 | exp, 0, r); | |
252b5132 | 4556 | #endif |
252b5132 RH |
4557 | } |
4558 | \f | |
4559 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
4560 | ||
4561 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
4562 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
4563 | then pack them all together. We do a little better in that we allow | |
4564 | them in words, longs, etc. and we'll pack them in target byte order | |
4565 | for you. | |
4566 | ||
47eebc20 | 4567 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
4568 | entirely fit, put it in the next unit. Overflowing the bitfield is |
4569 | explicitly *not* even a warning. The bitwidth should be considered | |
4570 | a "mask". | |
4571 | ||
4572 | To use this function the tc-XXX.h file should define | |
4573 | BITFIELD_CONS_EXPRESSIONS. */ | |
4574 | ||
041ff4dd | 4575 | static void |
252b5132 RH |
4576 | parse_bitfield_cons (exp, nbytes) |
4577 | expressionS *exp; | |
4578 | unsigned int nbytes; | |
4579 | { | |
4580 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
4581 | char *hold = input_line_pointer; | |
4582 | ||
4583 | (void) expression (exp); | |
4584 | ||
4585 | if (*input_line_pointer == ':') | |
041ff4dd NC |
4586 | { |
4587 | /* Bitfields. */ | |
252b5132 RH |
4588 | long value = 0; |
4589 | ||
4590 | for (;;) | |
4591 | { | |
4592 | unsigned long width; | |
4593 | ||
4594 | if (*input_line_pointer != ':') | |
4595 | { | |
4596 | input_line_pointer = hold; | |
4597 | break; | |
041ff4dd | 4598 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
4599 | |
4600 | /* In the general case, we can't allow | |
4601 | full expressions with symbol | |
4602 | differences and such. The relocation | |
4603 | entries for symbols not defined in this | |
4604 | assembly would require arbitrary field | |
4605 | widths, positions, and masks which most | |
4606 | of our current object formats don't | |
4607 | support. | |
4608 | ||
4609 | In the specific case where a symbol | |
4610 | *is* defined in this assembly, we | |
4611 | *could* build fixups and track it, but | |
4612 | this could lead to confusion for the | |
4613 | backends. I'm lazy. I'll take any | |
4614 | SEG_ABSOLUTE. I think that means that | |
4615 | you can use a previous .set or | |
041ff4dd | 4616 | .equ type symbol. xoxorich. */ |
252b5132 RH |
4617 | |
4618 | if (exp->X_op == O_absent) | |
4619 | { | |
4620 | as_warn (_("using a bit field width of zero")); | |
4621 | exp->X_add_number = 0; | |
4622 | exp->X_op = O_constant; | |
041ff4dd | 4623 | } /* Implied zero width bitfield. */ |
252b5132 RH |
4624 | |
4625 | if (exp->X_op != O_constant) | |
4626 | { | |
4627 | *input_line_pointer = '\0'; | |
4628 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
4629 | *input_line_pointer = ':'; | |
4630 | demand_empty_rest_of_line (); | |
4631 | return; | |
041ff4dd | 4632 | } /* Too complex. */ |
252b5132 RH |
4633 | |
4634 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
4635 | { | |
4636 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
4637 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
4638 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 4639 | } /* Too big. */ |
252b5132 RH |
4640 | |
4641 | if (width > bits_available) | |
4642 | { | |
4643 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
4644 | input_line_pointer = hold; | |
4645 | exp->X_add_number = value; | |
4646 | break; | |
041ff4dd | 4647 | } /* Won't fit. */ |
252b5132 | 4648 | |
ef99799a KH |
4649 | /* Skip ':'. */ |
4650 | hold = ++input_line_pointer; | |
252b5132 RH |
4651 | |
4652 | (void) expression (exp); | |
4653 | if (exp->X_op != O_constant) | |
4654 | { | |
4655 | char cache = *input_line_pointer; | |
4656 | ||
4657 | *input_line_pointer = '\0'; | |
4658 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
4659 | *input_line_pointer = cache; | |
4660 | demand_empty_rest_of_line (); | |
4661 | return; | |
041ff4dd | 4662 | } /* Too complex. */ |
252b5132 | 4663 | |
8d3842cd | 4664 | value |= ((~(-(1 << width)) & exp->X_add_number) |
252b5132 RH |
4665 | << ((BITS_PER_CHAR * nbytes) - bits_available)); |
4666 | ||
4667 | if ((bits_available -= width) == 0 | |
4668 | || is_it_end_of_statement () | |
4669 | || *input_line_pointer != ',') | |
4670 | { | |
4671 | break; | |
041ff4dd | 4672 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4673 | |
4674 | hold = ++input_line_pointer; | |
4675 | (void) expression (exp); | |
041ff4dd | 4676 | } |
252b5132 RH |
4677 | |
4678 | exp->X_add_number = value; | |
4679 | exp->X_op = O_constant; | |
4680 | exp->X_unsigned = 1; | |
956a6ba3 | 4681 | exp->X_extrabit = 0; |
041ff4dd NC |
4682 | } |
4683 | } | |
252b5132 RH |
4684 | |
4685 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4686 | \f | |
4687 | /* Handle an MRI style string expression. */ | |
4688 | ||
abd63a32 | 4689 | #ifdef TC_M68K |
252b5132 | 4690 | static void |
62ebcb5c | 4691 | parse_mri_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4692 | { |
4693 | if (*input_line_pointer != '\'' | |
4694 | && (input_line_pointer[1] != '\'' | |
4695 | || (*input_line_pointer != 'A' | |
4696 | && *input_line_pointer != 'E'))) | |
1e539319 | 4697 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
252b5132 RH |
4698 | else |
4699 | { | |
4700 | unsigned int scan; | |
4701 | unsigned int result = 0; | |
4702 | ||
4703 | /* An MRI style string. Cut into as many bytes as will fit into | |
4704 | a nbyte chunk, left justify if necessary, and separate with | |
4705 | commas so we can try again later. */ | |
4706 | if (*input_line_pointer == 'A') | |
4707 | ++input_line_pointer; | |
4708 | else if (*input_line_pointer == 'E') | |
4709 | { | |
4710 | as_bad (_("EBCDIC constants are not supported")); | |
4711 | ++input_line_pointer; | |
4712 | } | |
4713 | ||
4714 | input_line_pointer++; | |
4715 | for (scan = 0; scan < nbytes; scan++) | |
4716 | { | |
4717 | if (*input_line_pointer == '\'') | |
4718 | { | |
4719 | if (input_line_pointer[1] == '\'') | |
4720 | { | |
4721 | input_line_pointer++; | |
4722 | } | |
4723 | else | |
4724 | break; | |
4725 | } | |
4726 | result = (result << 8) | (*input_line_pointer++); | |
4727 | } | |
4728 | ||
041ff4dd | 4729 | /* Left justify. */ |
252b5132 RH |
4730 | while (scan < nbytes) |
4731 | { | |
4732 | result <<= 8; | |
4733 | scan++; | |
4734 | } | |
f0e652b4 | 4735 | |
041ff4dd | 4736 | /* Create correct expression. */ |
252b5132 RH |
4737 | exp->X_op = O_constant; |
4738 | exp->X_add_number = result; | |
f0e652b4 | 4739 | |
041ff4dd | 4740 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4741 | if (input_line_pointer[0] != '\'' || |
4742 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4743 | { | |
4744 | input_line_pointer -= 2; | |
4745 | input_line_pointer[0] = ','; | |
4746 | input_line_pointer[1] = '\''; | |
4747 | } | |
4748 | else | |
4749 | input_line_pointer++; | |
4750 | } | |
4751 | } | |
abd63a32 | 4752 | #endif /* TC_M68K */ |
252b5132 RH |
4753 | \f |
4754 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4755 | ||
4756 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4757 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4758 | object file COUNT times. | |
4759 | ||
4760 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4761 | ||
4762 | static void | |
4763 | parse_repeat_cons (exp, nbytes) | |
4764 | expressionS *exp; | |
4765 | unsigned int nbytes; | |
4766 | { | |
4767 | expressionS count; | |
3d540e93 | 4768 | int i; |
252b5132 RH |
4769 | |
4770 | expression (exp); | |
4771 | ||
4772 | if (*input_line_pointer != ':') | |
4773 | { | |
4774 | /* No repeat count. */ | |
4775 | return; | |
4776 | } | |
4777 | ||
4778 | ++input_line_pointer; | |
4779 | expression (&count); | |
4780 | if (count.X_op != O_constant | |
4781 | || count.X_add_number <= 0) | |
4782 | { | |
0e389e77 | 4783 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4784 | return; |
4785 | } | |
4786 | ||
4787 | /* The cons function is going to output this expression once. So we | |
4788 | output it count - 1 times. */ | |
4789 | for (i = count.X_add_number - 1; i > 0; i--) | |
4790 | emit_expr (exp, nbytes); | |
4791 | } | |
4792 | ||
4793 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4794 | \f | |
4795 | /* Parse a floating point number represented as a hex constant. This | |
4796 | permits users to specify the exact bits they want in the floating | |
4797 | point number. */ | |
4798 | ||
4799 | static int | |
39e6acbd | 4800 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4801 | { |
4802 | int length; | |
4803 | int i; | |
4804 | ||
4805 | switch (float_type) | |
4806 | { | |
4807 | case 'f': | |
4808 | case 'F': | |
4809 | case 's': | |
4810 | case 'S': | |
4811 | length = 4; | |
4812 | break; | |
4813 | ||
4814 | case 'd': | |
4815 | case 'D': | |
4816 | case 'r': | |
4817 | case 'R': | |
4818 | length = 8; | |
4819 | break; | |
4820 | ||
4821 | case 'x': | |
4822 | case 'X': | |
4823 | length = 12; | |
4824 | break; | |
4825 | ||
4826 | case 'p': | |
4827 | case 'P': | |
4828 | length = 12; | |
4829 | break; | |
4830 | ||
4831 | default: | |
0e389e77 | 4832 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4833 | return -1; |
4834 | } | |
4835 | ||
4836 | /* It would be nice if we could go through expression to parse the | |
4837 | hex constant, but if we get a bignum it's a pain to sort it into | |
4838 | the buffer correctly. */ | |
4839 | i = 0; | |
4840 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4841 | { | |
4842 | int d; | |
4843 | ||
4844 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4845 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4846 | if (*input_line_pointer == '_') |
4847 | { | |
4848 | ++input_line_pointer; | |
4849 | continue; | |
4850 | } | |
4851 | ||
4852 | if (i >= length) | |
4853 | { | |
0e389e77 | 4854 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4855 | return -1; |
4856 | } | |
4857 | d = hex_value (*input_line_pointer) << 4; | |
4858 | ++input_line_pointer; | |
4859 | while (*input_line_pointer == '_') | |
4860 | ++input_line_pointer; | |
4861 | if (hex_p (*input_line_pointer)) | |
4862 | { | |
4863 | d += hex_value (*input_line_pointer); | |
4864 | ++input_line_pointer; | |
4865 | } | |
4866 | if (target_big_endian) | |
4867 | bytes[i] = d; | |
4868 | else | |
4869 | bytes[length - i - 1] = d; | |
4870 | ++i; | |
4871 | } | |
4872 | ||
4873 | if (i < length) | |
4874 | { | |
4875 | if (target_big_endian) | |
4876 | memset (bytes + i, 0, length - i); | |
4877 | else | |
4878 | memset (bytes, 0, length - i); | |
4879 | } | |
4880 | ||
4881 | return length; | |
4882 | } | |
4883 | ||
d6415f6c | 4884 | /* float_cons() |
f0e652b4 | 4885 | |
041ff4dd NC |
4886 | CONStruct some more frag chars of .floats .ffloats etc. |
4887 | Makes 0 or more new frags. | |
4888 | If need_pass_2 == 1, no frags are emitted. | |
4889 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4890 | |
041ff4dd NC |
4891 | A floating constant is defined by atof_generic(), except it is preceded |
4892 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4893 | reading, I decided to be incompatible. This always tries to give you | |
4894 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4895 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4896 | a choice of 2 flavours of noise according to which of 2 floating-point |
4897 | scanners you directed AS to use. | |
f0e652b4 | 4898 | |
041ff4dd | 4899 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4900 | |
4901 | void | |
39e6acbd | 4902 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4903 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4904 | { |
3d540e93 | 4905 | char *p; |
041ff4dd | 4906 | int length; /* Number of chars in an object. */ |
3d540e93 | 4907 | char *err; /* Error from scanning floating literal. */ |
252b5132 RH |
4908 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4909 | ||
4910 | if (is_it_end_of_statement ()) | |
4911 | { | |
4912 | demand_empty_rest_of_line (); | |
4913 | return; | |
4914 | } | |
4915 | ||
ec9ab52c JB |
4916 | if (now_seg == absolute_section) |
4917 | { | |
4918 | as_bad (_("attempt to store float in absolute section")); | |
4919 | ignore_rest_of_line (); | |
4920 | return; | |
4921 | } | |
4922 | ||
4923 | if (in_bss ()) | |
4924 | { | |
4925 | as_bad (_("attempt to store float in section `%s'"), | |
4926 | segment_name (now_seg)); | |
4927 | ignore_rest_of_line (); | |
4928 | return; | |
4929 | } | |
4930 | ||
252b5132 RH |
4931 | #ifdef md_flush_pending_output |
4932 | md_flush_pending_output (); | |
4933 | #endif | |
4934 | ||
cc3f603a JM |
4935 | #ifdef md_cons_align |
4936 | md_cons_align (1); | |
4937 | #endif | |
4938 | ||
252b5132 RH |
4939 | do |
4940 | { | |
041ff4dd | 4941 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4942 | SKIP_WHITESPACE (); |
4943 | ||
4944 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4945 | letter is legal. Someone may invent a "z" format and this routine |
4946 | has no use for such information. Lusers beware: you get | |
4947 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4948 | if (input_line_pointer[0] == '0' |
3882b010 | 4949 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4950 | input_line_pointer += 2; |
4951 | ||
4952 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4953 | point with the exact digits specified. */ |
252b5132 RH |
4954 | if (input_line_pointer[0] == ':') |
4955 | { | |
4956 | ++input_line_pointer; | |
4957 | length = hex_float (float_type, temp); | |
4958 | if (length < 0) | |
4959 | { | |
4960 | ignore_rest_of_line (); | |
4961 | return; | |
4962 | } | |
4963 | } | |
4964 | else | |
4965 | { | |
4966 | err = md_atof (float_type, temp, &length); | |
4967 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4968 | know (err != NULL || length > 0); |
252b5132 RH |
4969 | if (err) |
4970 | { | |
0e389e77 | 4971 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4972 | ignore_rest_of_line (); |
4973 | return; | |
4974 | } | |
4975 | } | |
4976 | ||
4977 | if (!need_pass_2) | |
4978 | { | |
4979 | int count; | |
4980 | ||
4981 | count = 1; | |
4982 | ||
4983 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4984 | if (*input_line_pointer == ':') | |
4985 | { | |
4986 | expressionS count_exp; | |
4987 | ||
4988 | ++input_line_pointer; | |
4989 | expression (&count_exp); | |
f0e652b4 | 4990 | |
252b5132 RH |
4991 | if (count_exp.X_op != O_constant |
4992 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4993 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4994 | else |
4995 | count = count_exp.X_add_number; | |
4996 | } | |
4997 | #endif | |
4998 | ||
4999 | while (--count >= 0) | |
5000 | { | |
5001 | p = frag_more (length); | |
5002 | memcpy (p, temp, (unsigned int) length); | |
5003 | } | |
5004 | } | |
5005 | SKIP_WHITESPACE (); | |
5006 | } | |
5007 | while (*input_line_pointer++ == ','); | |
5008 | ||
041ff4dd NC |
5009 | /* Put terminator back into stream. */ |
5010 | --input_line_pointer; | |
252b5132 | 5011 | demand_empty_rest_of_line (); |
041ff4dd | 5012 | } |
252b5132 | 5013 | \f |
9136aa49 | 5014 | /* LEB128 Encoding. |
252b5132 | 5015 | |
9136aa49 DG |
5016 | Note - we are using the DWARF standard's definition of LEB128 encoding |
5017 | where each 7-bit value is a stored in a byte, *not* an octet. This | |
5018 | means that on targets where a byte contains multiple octets there is | |
5019 | a *huge waste of space*. (This also means that we do not have to | |
5020 | have special versions of these functions for when OCTETS_PER_BYTE_POWER | |
5021 | is non-zero). | |
5022 | ||
5023 | If the 7-bit values were to be packed into N-bit bytes (where N > 8) | |
5024 | we would then have to consider whether multiple, successive LEB128 | |
5025 | values should be packed into the bytes without padding (bad idea) or | |
5026 | whether each LEB128 number is padded out to a whole number of bytes. | |
5027 | Plus you have to decide on the endianness of packing octets into a | |
5028 | byte. */ | |
5029 | ||
5030 | /* Return the size of a LEB128 value in bytes. */ | |
5031 | ||
5032 | static inline unsigned int | |
39e6acbd | 5033 | sizeof_sleb128 (offsetT value) |
252b5132 | 5034 | { |
3d540e93 NC |
5035 | int size = 0; |
5036 | unsigned byte; | |
252b5132 RH |
5037 | |
5038 | do | |
5039 | { | |
5040 | byte = (value & 0x7f); | |
5041 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5042 | Fortunately, we can structure things so that the extra work reduces | |
5043 | to a noop on systems that do things "properly". */ | |
5044 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5045 | size += 1; | |
5046 | } | |
5047 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
5048 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5049 | ||
5050 | return size; | |
5051 | } | |
5052 | ||
9136aa49 | 5053 | static inline unsigned int |
39e6acbd | 5054 | sizeof_uleb128 (valueT value) |
252b5132 | 5055 | { |
3d540e93 | 5056 | int size = 0; |
252b5132 RH |
5057 | |
5058 | do | |
5059 | { | |
252b5132 RH |
5060 | value >>= 7; |
5061 | size += 1; | |
5062 | } | |
5063 | while (value != 0); | |
5064 | ||
5065 | return size; | |
5066 | } | |
5067 | ||
9136aa49 | 5068 | unsigned int |
39e6acbd | 5069 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
5070 | { |
5071 | if (sign) | |
5072 | return sizeof_sleb128 ((offsetT) value); | |
5073 | else | |
5074 | return sizeof_uleb128 (value); | |
5075 | } | |
5076 | ||
9136aa49 | 5077 | /* Output a LEB128 value. Returns the number of bytes used. */ |
252b5132 | 5078 | |
9136aa49 | 5079 | static inline unsigned int |
39e6acbd | 5080 | output_sleb128 (char *p, offsetT value) |
252b5132 | 5081 | { |
3d540e93 NC |
5082 | char *orig = p; |
5083 | int more; | |
252b5132 RH |
5084 | |
5085 | do | |
5086 | { | |
5087 | unsigned byte = (value & 0x7f); | |
5088 | ||
5089 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5090 | Fortunately, we can structure things so that the extra work reduces | |
5091 | to a noop on systems that do things "properly". */ | |
5092 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5093 | ||
5094 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
5095 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5096 | if (more) | |
5097 | byte |= 0x80; | |
5098 | ||
5099 | *p++ = byte; | |
5100 | } | |
5101 | while (more); | |
5102 | ||
5103 | return p - orig; | |
5104 | } | |
5105 | ||
9136aa49 | 5106 | static inline unsigned int |
39e6acbd | 5107 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
5108 | { |
5109 | char *orig = p; | |
5110 | ||
5111 | do | |
5112 | { | |
5113 | unsigned byte = (value & 0x7f); | |
9136aa49 | 5114 | |
252b5132 RH |
5115 | value >>= 7; |
5116 | if (value != 0) | |
5117 | /* More bytes to follow. */ | |
5118 | byte |= 0x80; | |
5119 | ||
5120 | *p++ = byte; | |
5121 | } | |
5122 | while (value != 0); | |
5123 | ||
5124 | return p - orig; | |
5125 | } | |
5126 | ||
9136aa49 | 5127 | unsigned int |
39e6acbd | 5128 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
5129 | { |
5130 | if (sign) | |
5131 | return output_sleb128 (p, (offsetT) value); | |
5132 | else | |
5133 | return output_uleb128 (p, value); | |
5134 | } | |
5135 | ||
5136 | /* Do the same for bignums. We combine sizeof with output here in that | |
5137 | we don't output for NULL values of P. It isn't really as critical as | |
9136aa49 DG |
5138 | for "normal" values that this be streamlined. Returns the number of |
5139 | bytes used. */ | |
252b5132 | 5140 | |
9136aa49 DG |
5141 | static inline unsigned int |
5142 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5143 | { |
5144 | char *orig = p; | |
5145 | valueT val = 0; | |
5146 | int loaded = 0; | |
5147 | unsigned byte; | |
5148 | ||
5149 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
5150 | while (size > 1 |
5151 | && bignum[size - 1] == LITTLENUM_MASK | |
5152 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
5153 | size--; |
5154 | ||
5155 | do | |
5156 | { | |
e5604d79 RS |
5157 | /* OR in the next part of the littlenum. */ |
5158 | val |= (*bignum << loaded); | |
5159 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
5160 | size--; | |
5161 | bignum++; | |
5162 | ||
5163 | /* Add bytes until there are less than 7 bits left in VAL | |
5164 | or until every non-sign bit has been written. */ | |
5165 | do | |
252b5132 | 5166 | { |
e5604d79 RS |
5167 | byte = val & 0x7f; |
5168 | loaded -= 7; | |
5169 | val >>= 7; | |
5170 | if (size > 0 | |
5171 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 5172 | byte |= 0x80; |
e5604d79 RS |
5173 | |
5174 | if (orig) | |
5175 | *p = byte; | |
5176 | p++; | |
252b5132 | 5177 | } |
e5604d79 RS |
5178 | while ((byte & 0x80) != 0 && loaded >= 7); |
5179 | } | |
5180 | while (size > 0); | |
252b5132 | 5181 | |
e5604d79 RS |
5182 | /* Mop up any left-over bits (of which there will be less than 7). */ |
5183 | if ((byte & 0x80) != 0) | |
5184 | { | |
5185 | /* Sign-extend VAL. */ | |
5186 | if (val & (1 << (loaded - 1))) | |
29798047 | 5187 | val |= ~0U << loaded; |
252b5132 | 5188 | if (orig) |
e5604d79 | 5189 | *p = val & 0x7f; |
252b5132 RH |
5190 | p++; |
5191 | } | |
252b5132 RH |
5192 | |
5193 | return p - orig; | |
5194 | } | |
5195 | ||
9136aa49 DG |
5196 | static inline unsigned int |
5197 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5198 | { |
5199 | char *orig = p; | |
5200 | valueT val = 0; | |
5201 | int loaded = 0; | |
5202 | unsigned byte; | |
5203 | ||
5204 | /* Strip leading zeros off the bignum. */ | |
5205 | /* XXX: Is this needed? */ | |
041ff4dd | 5206 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
5207 | size--; |
5208 | ||
5209 | do | |
5210 | { | |
5211 | if (loaded < 7 && size > 0) | |
5212 | { | |
5213 | val |= (*bignum << loaded); | |
5214 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5215 | size--; | |
5216 | bignum++; | |
5217 | } | |
5218 | ||
5219 | byte = val & 0x7f; | |
5220 | loaded -= 7; | |
5221 | val >>= 7; | |
5222 | ||
5223 | if (size > 0 || val) | |
5224 | byte |= 0x80; | |
5225 | ||
5226 | if (orig) | |
5227 | *p = byte; | |
5228 | p++; | |
5229 | } | |
5230 | while (byte & 0x80); | |
5231 | ||
5232 | return p - orig; | |
5233 | } | |
5234 | ||
9136aa49 DG |
5235 | static unsigned int |
5236 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size, int sign) | |
252b5132 RH |
5237 | { |
5238 | if (sign) | |
5239 | return output_big_sleb128 (p, bignum, size); | |
5240 | else | |
5241 | return output_big_uleb128 (p, bignum, size); | |
5242 | } | |
5243 | ||
5244 | /* Generate the appropriate fragments for a given expression to emit a | |
9a724e7b | 5245 | leb128 value. SIGN is 1 for sleb, 0 for uleb. */ |
252b5132 | 5246 | |
87c245cc | 5247 | static void |
39e6acbd | 5248 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5249 | { |
5250 | operatorT op = exp->X_op; | |
b7712f8d | 5251 | unsigned int nbytes; |
252b5132 RH |
5252 | |
5253 | if (op == O_absent || op == O_illegal) | |
5254 | { | |
5255 | as_warn (_("zero assumed for missing expression")); | |
5256 | exp->X_add_number = 0; | |
5257 | op = O_constant; | |
5258 | } | |
5259 | else if (op == O_big && exp->X_add_number <= 0) | |
5260 | { | |
0e389e77 | 5261 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5262 | exp->X_add_number = 0; |
5263 | op = O_constant; | |
5264 | } | |
5265 | else if (op == O_register) | |
5266 | { | |
5267 | as_warn (_("register value used as expression")); | |
5268 | op = O_constant; | |
5269 | } | |
e5604d79 RS |
5270 | else if (op == O_constant |
5271 | && sign | |
956a6ba3 | 5272 | && (exp->X_add_number < 0) == !exp->X_extrabit) |
e5604d79 RS |
5273 | { |
5274 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5275 | doesn't reflect the sign of the original value. Convert EXP | |
5276 | to a correctly-extended bignum instead. */ | |
956a6ba3 | 5277 | convert_to_bignum (exp, exp->X_extrabit); |
e5604d79 RS |
5278 | op = O_big; |
5279 | } | |
252b5132 | 5280 | |
ec9ab52c JB |
5281 | if (now_seg == absolute_section) |
5282 | { | |
5283 | if (op != O_constant || exp->X_add_number != 0) | |
5284 | as_bad (_("attempt to store value in absolute section")); | |
5285 | abs_section_offset++; | |
5286 | return; | |
5287 | } | |
5288 | ||
5289 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
5290 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
5291 | segment_name (now_seg)); | |
5292 | ||
67a659f6 RH |
5293 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5294 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5295 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5296 | if (check_eh_frame (exp, &nbytes)) |
5297 | abort (); | |
5298 | ||
371b7465 RH |
5299 | /* Let the backend know that subsequent data may be byte aligned. */ |
5300 | #ifdef md_cons_align | |
5301 | md_cons_align (1); | |
5302 | #endif | |
5303 | ||
252b5132 RH |
5304 | if (op == O_constant) |
5305 | { | |
5306 | /* If we've got a constant, emit the thing directly right now. */ | |
5307 | ||
5308 | valueT value = exp->X_add_number; | |
9136aa49 | 5309 | unsigned int size; |
252b5132 RH |
5310 | char *p; |
5311 | ||
5312 | size = sizeof_leb128 (value, sign); | |
5313 | p = frag_more (size); | |
9136aa49 DG |
5314 | if (output_leb128 (p, value, sign) > size) |
5315 | abort (); | |
252b5132 RH |
5316 | } |
5317 | else if (op == O_big) | |
5318 | { | |
5319 | /* O_big is a different sort of constant. */ | |
5320 | ||
9136aa49 | 5321 | unsigned int size; |
252b5132 RH |
5322 | char *p; |
5323 | ||
5324 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
5325 | p = frag_more (size); | |
9136aa49 DG |
5326 | if (output_big_leb128 (p, generic_bignum, exp->X_add_number, sign) > size) |
5327 | abort (); | |
252b5132 RH |
5328 | } |
5329 | else | |
5330 | { | |
041ff4dd | 5331 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5332 | resolve things later. */ |
5333 | ||
041ff4dd | 5334 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5335 | make_expr_symbol (exp), 0, (char *) NULL); |
5336 | } | |
5337 | } | |
5338 | ||
5339 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5340 | ||
5341 | void | |
39e6acbd | 5342 | s_leb128 (int sign) |
252b5132 RH |
5343 | { |
5344 | expressionS exp; | |
5345 | ||
00bbdfe7 BW |
5346 | #ifdef md_flush_pending_output |
5347 | md_flush_pending_output (); | |
5348 | #endif | |
5349 | ||
041ff4dd NC |
5350 | do |
5351 | { | |
5352 | expression (&exp); | |
5353 | emit_leb128_expr (&exp, sign); | |
5354 | } | |
5355 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5356 | |
5357 | input_line_pointer--; | |
5358 | demand_empty_rest_of_line (); | |
5359 | } | |
5360 | \f | |
38a57ae7 NC |
5361 | static void |
5362 | stringer_append_char (int c, int bitsize) | |
5363 | { | |
ec9ab52c JB |
5364 | if (c && in_bss ()) |
5365 | as_bad (_("attempt to store non-empty string in section `%s'"), | |
5366 | segment_name (now_seg)); | |
5367 | ||
38a57ae7 NC |
5368 | if (!target_big_endian) |
5369 | FRAG_APPEND_1_CHAR (c); | |
5370 | ||
5371 | switch (bitsize) | |
5372 | { | |
5373 | case 64: | |
5374 | FRAG_APPEND_1_CHAR (0); | |
5375 | FRAG_APPEND_1_CHAR (0); | |
5376 | FRAG_APPEND_1_CHAR (0); | |
5377 | FRAG_APPEND_1_CHAR (0); | |
5378 | /* Fall through. */ | |
5379 | case 32: | |
5380 | FRAG_APPEND_1_CHAR (0); | |
5381 | FRAG_APPEND_1_CHAR (0); | |
5382 | /* Fall through. */ | |
5383 | case 16: | |
5384 | FRAG_APPEND_1_CHAR (0); | |
5385 | /* Fall through. */ | |
5386 | case 8: | |
5387 | break; | |
5388 | default: | |
5389 | /* Called with invalid bitsize argument. */ | |
5390 | abort (); | |
5391 | break; | |
5392 | } | |
5393 | if (target_big_endian) | |
5394 | FRAG_APPEND_1_CHAR (c); | |
5395 | } | |
5396 | ||
5397 | /* Worker to do .ascii etc statements. | |
5398 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5399 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5400 | check it. |
5401 | Checks for end-of-line. | |
5402 | BITS_APPENDZERO says how many bits are in a target char. | |
5403 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5404 | |
5405 | void | |
38a57ae7 | 5406 | stringer (int bits_appendzero) |
252b5132 | 5407 | { |
38a57ae7 NC |
5408 | const int bitsize = bits_appendzero & ~7; |
5409 | const int append_zero = bits_appendzero & 1; | |
5410 | unsigned int c; | |
87975d2a | 5411 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5412 | char *start; |
87975d2a | 5413 | #endif |
252b5132 RH |
5414 | |
5415 | #ifdef md_flush_pending_output | |
5416 | md_flush_pending_output (); | |
5417 | #endif | |
5418 | ||
cc3f603a JM |
5419 | #ifdef md_cons_align |
5420 | md_cons_align (1); | |
5421 | #endif | |
5422 | ||
35c1a439 JB |
5423 | /* If we have been switched into the abs_section then we |
5424 | will not have an obstack onto which we can hang strings. */ | |
5425 | if (now_seg == absolute_section) | |
5426 | { | |
5427 | as_bad (_("strings must be placed into a section")); | |
5428 | ignore_rest_of_line (); | |
5429 | return; | |
5430 | } | |
5431 | ||
041ff4dd NC |
5432 | /* The following awkward logic is to parse ZERO or more strings, |
5433 | comma separated. Recall a string expression includes spaces | |
5434 | before the opening '\"' and spaces after the closing '\"'. | |
5435 | We fake a leading ',' if there is (supposed to be) | |
5436 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5437 | if (is_it_end_of_statement ()) |
5438 | { | |
041ff4dd NC |
5439 | c = 0; /* Skip loop. */ |
5440 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5441 | } |
5442 | else | |
5443 | { | |
041ff4dd | 5444 | c = ','; /* Do loop. */ |
252b5132 | 5445 | } |
d6415f6c | 5446 | |
252b5132 RH |
5447 | while (c == ',' || c == '<' || c == '"') |
5448 | { | |
5449 | SKIP_WHITESPACE (); | |
5450 | switch (*input_line_pointer) | |
5451 | { | |
5452 | case '\"': | |
041ff4dd | 5453 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5454 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5455 | start = input_line_pointer; |
87975d2a | 5456 | #endif |
38a57ae7 | 5457 | |
252b5132 | 5458 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5459 | stringer_append_char (c, bitsize); |
5460 | ||
252b5132 | 5461 | if (append_zero) |
38a57ae7 NC |
5462 | stringer_append_char (0, bitsize); |
5463 | ||
252b5132 RH |
5464 | know (input_line_pointer[-1] == '\"'); |
5465 | ||
87975d2a | 5466 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5467 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5468 | will emit .string with a filename in the .debug section |
5469 | after a sequence of constants. See the comment in | |
5470 | emit_expr for the sequence. emit_expr will set | |
5471 | dwarf_file_string to non-zero if this string might be a | |
5472 | source file name. */ | |
252b5132 RH |
5473 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5474 | dwarf_file_string = 0; | |
5475 | else if (dwarf_file_string) | |
5476 | { | |
5477 | c = input_line_pointer[-1]; | |
5478 | input_line_pointer[-1] = '\0'; | |
5479 | listing_source_file (start); | |
5480 | input_line_pointer[-1] = c; | |
5481 | } | |
252b5132 RH |
5482 | #endif |
5483 | ||
5484 | break; | |
5485 | case '<': | |
5486 | input_line_pointer++; | |
5487 | c = get_single_number (); | |
38a57ae7 | 5488 | stringer_append_char (c, bitsize); |
252b5132 | 5489 | if (*input_line_pointer != '>') |
38a57ae7 NC |
5490 | as_bad (_("expected <nn>")); |
5491 | ||
252b5132 RH |
5492 | input_line_pointer++; |
5493 | break; | |
5494 | case ',': | |
5495 | input_line_pointer++; | |
5496 | break; | |
5497 | } | |
5498 | SKIP_WHITESPACE (); | |
5499 | c = *input_line_pointer; | |
5500 | } | |
5501 | ||
5502 | demand_empty_rest_of_line (); | |
38a57ae7 | 5503 | } |
252b5132 RH |
5504 | \f |
5505 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5506 | high bits set. We'll probably also have trouble with | |
5507 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5508 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5509 | |
041ff4dd | 5510 | unsigned int |
39e6acbd | 5511 | next_char_of_string (void) |
252b5132 | 5512 | { |
3d540e93 | 5513 | unsigned int c; |
252b5132 RH |
5514 | |
5515 | c = *input_line_pointer++ & CHAR_MASK; | |
5516 | switch (c) | |
5517 | { | |
5518 | case '\"': | |
5519 | c = NOT_A_CHAR; | |
5520 | break; | |
5521 | ||
5522 | case '\n': | |
0e389e77 | 5523 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5524 | bump_line_counters (); |
5525 | break; | |
5526 | ||
5527 | #ifndef NO_STRING_ESCAPES | |
5528 | case '\\': | |
d9800776 | 5529 | switch (c = *input_line_pointer++ & CHAR_MASK) |
252b5132 RH |
5530 | { |
5531 | case 'b': | |
5532 | c = '\b'; | |
5533 | break; | |
5534 | ||
5535 | case 'f': | |
5536 | c = '\f'; | |
5537 | break; | |
5538 | ||
5539 | case 'n': | |
5540 | c = '\n'; | |
5541 | break; | |
5542 | ||
5543 | case 'r': | |
5544 | c = '\r'; | |
5545 | break; | |
5546 | ||
5547 | case 't': | |
5548 | c = '\t'; | |
5549 | break; | |
5550 | ||
5551 | case 'v': | |
5552 | c = '\013'; | |
5553 | break; | |
5554 | ||
5555 | case '\\': | |
5556 | case '"': | |
041ff4dd | 5557 | break; /* As itself. */ |
252b5132 RH |
5558 | |
5559 | case '0': | |
5560 | case '1': | |
5561 | case '2': | |
5562 | case '3': | |
5563 | case '4': | |
5564 | case '5': | |
5565 | case '6': | |
5566 | case '7': | |
5567 | case '8': | |
5568 | case '9': | |
5569 | { | |
5570 | long number; | |
5571 | int i; | |
5572 | ||
041ff4dd | 5573 | for (i = 0, number = 0; |
3882b010 | 5574 | ISDIGIT (c) && i < 3; |
041ff4dd | 5575 | c = *input_line_pointer++, i++) |
252b5132 RH |
5576 | { |
5577 | number = number * 8 + c - '0'; | |
5578 | } | |
f0e652b4 | 5579 | |
d9800776 | 5580 | c = number & CHAR_MASK; |
252b5132 RH |
5581 | } |
5582 | --input_line_pointer; | |
5583 | break; | |
5584 | ||
5585 | case 'x': | |
5586 | case 'X': | |
5587 | { | |
5588 | long number; | |
5589 | ||
5590 | number = 0; | |
5591 | c = *input_line_pointer++; | |
3882b010 | 5592 | while (ISXDIGIT (c)) |
252b5132 | 5593 | { |
3882b010 | 5594 | if (ISDIGIT (c)) |
252b5132 | 5595 | number = number * 16 + c - '0'; |
3882b010 | 5596 | else if (ISUPPER (c)) |
252b5132 RH |
5597 | number = number * 16 + c - 'A' + 10; |
5598 | else | |
5599 | number = number * 16 + c - 'a' + 10; | |
5600 | c = *input_line_pointer++; | |
5601 | } | |
d9800776 | 5602 | c = number & CHAR_MASK; |
252b5132 RH |
5603 | --input_line_pointer; |
5604 | } | |
5605 | break; | |
5606 | ||
5607 | case '\n': | |
041ff4dd | 5608 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5609 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5610 | c = '\n'; |
5611 | bump_line_counters (); | |
5612 | break; | |
5613 | ||
5614 | default: | |
5615 | ||
5616 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5617 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5618 | c = '?'; |
5619 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5620 | ||
5621 | break; | |
041ff4dd | 5622 | } |
252b5132 RH |
5623 | break; |
5624 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
5625 | ||
5626 | default: | |
5627 | break; | |
041ff4dd | 5628 | } |
252b5132 | 5629 | return (c); |
041ff4dd | 5630 | } |
252b5132 RH |
5631 | \f |
5632 | static segT | |
3d540e93 | 5633 | get_segmented_expression (expressionS *expP) |
252b5132 | 5634 | { |
3d540e93 | 5635 | segT retval; |
252b5132 RH |
5636 | |
5637 | retval = expression (expP); | |
5638 | if (expP->X_op == O_illegal | |
5639 | || expP->X_op == O_absent | |
5640 | || expP->X_op == O_big) | |
5641 | { | |
0e389e77 | 5642 | as_bad (_("expected address expression")); |
252b5132 RH |
5643 | expP->X_op = O_constant; |
5644 | expP->X_add_number = 0; | |
5645 | retval = absolute_section; | |
5646 | } | |
5647 | return retval; | |
5648 | } | |
5649 | ||
041ff4dd | 5650 | static segT |
3d540e93 | 5651 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5652 | { |
259af69e | 5653 | segT retval = get_segmented_expression (expP); |
252b5132 | 5654 | |
259af69e | 5655 | if (retval == undefined_section) |
252b5132 RH |
5656 | { |
5657 | /* There is no easy way to extract the undefined symbol from the | |
5658 | expression. */ | |
5659 | if (expP->X_add_symbol != NULL | |
5660 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5661 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5662 | S_GET_NAME (expP->X_add_symbol)); | |
5663 | else | |
5664 | as_warn (_("some symbol undefined; zero assumed")); | |
5665 | retval = absolute_section; | |
5666 | expP->X_op = O_constant; | |
5667 | expP->X_add_number = 0; | |
5668 | } | |
259af69e | 5669 | return retval; |
041ff4dd | 5670 | } |
252b5132 | 5671 | |
041ff4dd | 5672 | char /* Return terminator. */ |
39e6acbd | 5673 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5674 | { |
5675 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5676 | *val_pointer = (long) get_absolute_expression (); | |
5677 | return (*input_line_pointer++); | |
5678 | } | |
5679 | \f | |
041ff4dd NC |
5680 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5681 | Give a warning if that happens. */ | |
5682 | ||
252b5132 | 5683 | char * |
39e6acbd | 5684 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5685 | { |
3d540e93 | 5686 | char *s; |
252b5132 RH |
5687 | |
5688 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5689 | { | |
3d540e93 | 5690 | int len; |
252b5132 RH |
5691 | |
5692 | for (len = *len_pointer; len > 0; len--) | |
5693 | { | |
5694 | if (*s == 0) | |
5695 | { | |
5696 | s = 0; | |
5697 | len = 1; | |
5698 | *len_pointer = 0; | |
0e389e77 | 5699 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5700 | } |
5701 | } | |
5702 | } | |
f0e652b4 | 5703 | |
252b5132 RH |
5704 | return s; |
5705 | } | |
5706 | \f | |
041ff4dd NC |
5707 | /* Demand string, but return a safe (=private) copy of the string. |
5708 | Return NULL if we can't read a string here. */ | |
5709 | ||
252b5132 | 5710 | char * |
39e6acbd | 5711 | demand_copy_string (int *lenP) |
252b5132 | 5712 | { |
3d540e93 NC |
5713 | unsigned int c; |
5714 | int len; | |
252b5132 RH |
5715 | char *retval; |
5716 | ||
5717 | len = 0; | |
5718 | SKIP_WHITESPACE (); | |
5719 | if (*input_line_pointer == '\"') | |
5720 | { | |
041ff4dd | 5721 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5722 | |
5723 | while (is_a_char (c = next_char_of_string ())) | |
5724 | { | |
5725 | obstack_1grow (¬es, c); | |
5726 | len++; | |
5727 | } | |
5728 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5729 | null terminated string. */ |
252b5132 | 5730 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5731 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5732 | } |
5733 | else | |
5734 | { | |
c95b35a9 | 5735 | as_bad (_("missing string")); |
252b5132 RH |
5736 | retval = NULL; |
5737 | ignore_rest_of_line (); | |
5738 | } | |
5739 | *lenP = len; | |
5740 | return (retval); | |
041ff4dd | 5741 | } |
252b5132 | 5742 | \f |
041ff4dd | 5743 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5744 | |
041ff4dd | 5745 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5746 | |
041ff4dd NC |
5747 | Out: 1 if input_line_pointer->end-of-line. */ |
5748 | ||
5749 | int | |
39e6acbd | 5750 | is_it_end_of_statement (void) |
252b5132 RH |
5751 | { |
5752 | SKIP_WHITESPACE (); | |
5753 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5754 | } |
252b5132 | 5755 | |
041ff4dd | 5756 | void |
39e6acbd | 5757 | equals (char *sym_name, int reassign) |
252b5132 | 5758 | { |
252b5132 | 5759 | char *stop = NULL; |
fb25138b | 5760 | char stopc = 0; |
252b5132 RH |
5761 | |
5762 | input_line_pointer++; | |
5763 | if (*input_line_pointer == '=') | |
5764 | input_line_pointer++; | |
9497f5ac NC |
5765 | if (reassign < 0 && *input_line_pointer == '=') |
5766 | input_line_pointer++; | |
252b5132 RH |
5767 | |
5768 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5769 | input_line_pointer++; | |
5770 | ||
5771 | if (flag_mri) | |
5772 | stop = mri_comment_field (&stopc); | |
5773 | ||
9497f5ac | 5774 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5775 | |
5776 | if (flag_mri) | |
31d20a21 AM |
5777 | { |
5778 | demand_empty_rest_of_line (); | |
5779 | mri_comment_end (stop, stopc); | |
5780 | } | |
041ff4dd | 5781 | } |
252b5132 | 5782 | |
7e005732 NC |
5783 | /* .incbin -- include a file verbatim at the current location. */ |
5784 | ||
5785 | void | |
39e6acbd | 5786 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5787 | { |
5788 | FILE * binfile; | |
5789 | char * path; | |
5790 | char * filename; | |
5791 | char * binfrag; | |
5792 | long skip = 0; | |
5793 | long count = 0; | |
5794 | long bytes; | |
5795 | int len; | |
5796 | ||
5797 | #ifdef md_flush_pending_output | |
5798 | md_flush_pending_output (); | |
5799 | #endif | |
5800 | ||
cc3f603a JM |
5801 | #ifdef md_cons_align |
5802 | md_cons_align (1); | |
5803 | #endif | |
5804 | ||
7e005732 NC |
5805 | SKIP_WHITESPACE (); |
5806 | filename = demand_copy_string (& len); | |
5807 | if (filename == NULL) | |
5808 | return; | |
5809 | ||
5810 | SKIP_WHITESPACE (); | |
5811 | ||
5812 | /* Look for optional skip and count. */ | |
5813 | if (* input_line_pointer == ',') | |
5814 | { | |
5815 | ++ input_line_pointer; | |
5816 | skip = get_absolute_expression (); | |
5817 | ||
5818 | SKIP_WHITESPACE (); | |
5819 | ||
5820 | if (* input_line_pointer == ',') | |
5821 | { | |
5822 | ++ input_line_pointer; | |
5823 | ||
5824 | count = get_absolute_expression (); | |
5825 | if (count == 0) | |
5826 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5827 | ||
5828 | SKIP_WHITESPACE (); | |
5829 | } | |
5830 | } | |
5831 | ||
5832 | demand_empty_rest_of_line (); | |
5833 | ||
5834 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5835 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5836 | if (binfile == NULL) |
5837 | { | |
5838 | int i; | |
5839 | ||
1e9cc1c2 | 5840 | path = (char *) xmalloc ((unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5841 | |
5842 | for (i = 0; i < include_dir_count; i++) | |
5843 | { | |
5844 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5845 | ||
f740e790 | 5846 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5847 | if (binfile != NULL) |
5848 | break; | |
5849 | } | |
5850 | ||
5851 | if (binfile == NULL) | |
5852 | as_bad (_("file not found: %s"), filename); | |
5853 | } | |
5854 | else | |
5855 | path = xstrdup (filename); | |
5856 | ||
5857 | if (binfile) | |
5858 | { | |
f740e790 NC |
5859 | long file_len; |
5860 | ||
7e005732 NC |
5861 | register_dependency (path); |
5862 | ||
5863 | /* Compute the length of the file. */ | |
5864 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5865 | { | |
5866 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5867 | goto done; | |
5868 | } | |
f740e790 | 5869 | file_len = ftell (binfile); |
7e005732 | 5870 | |
c556cc9c | 5871 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5872 | if (count == 0) |
c556cc9c | 5873 | count = file_len - skip; |
7e005732 | 5874 | |
c556cc9c | 5875 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5876 | { |
c556cc9c | 5877 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5878 | skip, count, file_len); |
7e005732 NC |
5879 | goto done; |
5880 | } | |
5881 | ||
5882 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5883 | { | |
5884 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5885 | goto done; | |
5886 | } | |
5887 | ||
5888 | /* Allocate frag space and store file contents in it. */ | |
5889 | binfrag = frag_more (count); | |
5890 | ||
5891 | bytes = fread (binfrag, 1, count, binfile); | |
5892 | if (bytes < count) | |
5893 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5894 | path, bytes, count); | |
5895 | } | |
5896 | done: | |
5897 | if (binfile != NULL) | |
5898 | fclose (binfile); | |
5899 | if (path) | |
5900 | free (path); | |
5901 | } | |
5902 | ||
041ff4dd | 5903 | /* .include -- include a file at this point. */ |
252b5132 | 5904 | |
041ff4dd | 5905 | void |
39e6acbd | 5906 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5907 | { |
252b5132 RH |
5908 | char *filename; |
5909 | int i; | |
1e9cc1c2 | 5910 | FILE *try_file; |
252b5132 RH |
5911 | char *path; |
5912 | ||
041ff4dd | 5913 | if (!flag_m68k_mri) |
252b5132 RH |
5914 | { |
5915 | filename = demand_copy_string (&i); | |
5916 | if (filename == NULL) | |
5917 | { | |
5918 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5919 | called ignore_rest_of_line. */ |
252b5132 RH |
5920 | return; |
5921 | } | |
5922 | } | |
5923 | else | |
5924 | { | |
5925 | SKIP_WHITESPACE (); | |
5926 | i = 0; | |
041ff4dd | 5927 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5928 | && *input_line_pointer != ' ' |
5929 | && *input_line_pointer != '\t') | |
5930 | { | |
5931 | obstack_1grow (¬es, *input_line_pointer); | |
5932 | ++input_line_pointer; | |
5933 | ++i; | |
5934 | } | |
f0e652b4 | 5935 | |
252b5132 | 5936 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5937 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5938 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5939 | ++input_line_pointer; |
5940 | } | |
f0e652b4 | 5941 | |
252b5132 | 5942 | demand_empty_rest_of_line (); |
1e9cc1c2 | 5943 | path = (char *) xmalloc ((unsigned long) i |
fa94de6b | 5944 | + include_dir_maxlen + 5 /* slop */ ); |
f0e652b4 | 5945 | |
252b5132 RH |
5946 | for (i = 0; i < include_dir_count; i++) |
5947 | { | |
5948 | strcpy (path, include_dirs[i]); | |
5949 | strcat (path, "/"); | |
5950 | strcat (path, filename); | |
1e9cc1c2 | 5951 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 5952 | { |
1e9cc1c2 | 5953 | fclose (try_file); |
252b5132 RH |
5954 | goto gotit; |
5955 | } | |
5956 | } | |
f0e652b4 | 5957 | |
252b5132 RH |
5958 | free (path); |
5959 | path = filename; | |
5960 | gotit: | |
041ff4dd | 5961 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5962 | register_dependency (path); |
9f10757c | 5963 | input_scrub_insert_file (path); |
041ff4dd | 5964 | } |
252b5132 | 5965 | |
041ff4dd | 5966 | void |
39e6acbd | 5967 | add_include_dir (char *path) |
252b5132 RH |
5968 | { |
5969 | int i; | |
5970 | ||
5971 | if (include_dir_count == 0) | |
5972 | { | |
5973 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5974 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5975 | include_dir_count = 2; |
5976 | } | |
5977 | else | |
5978 | { | |
5979 | include_dir_count++; | |
041ff4dd | 5980 | include_dirs = |
b2e951ec NC |
5981 | (char **) xrealloc (include_dirs, |
5982 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5983 | } |
5984 | ||
041ff4dd | 5985 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5986 | |
5987 | i = strlen (path); | |
5988 | if (i > include_dir_maxlen) | |
5989 | include_dir_maxlen = i; | |
041ff4dd | 5990 | } |
252b5132 RH |
5991 | \f |
5992 | /* Output debugging information to denote the source file. */ | |
5993 | ||
5994 | static void | |
39e6acbd | 5995 | generate_file_debug (void) |
252b5132 RH |
5996 | { |
5997 | if (debug_type == DEBUG_STABS) | |
5998 | stabs_generate_asm_file (); | |
5999 | } | |
6000 | ||
6001 | /* Output line number debugging information for the current source line. */ | |
6002 | ||
6003 | void | |
39e6acbd | 6004 | generate_lineno_debug (void) |
252b5132 | 6005 | { |
252b5132 RH |
6006 | switch (debug_type) |
6007 | { | |
6008 | case DEBUG_UNSPECIFIED: | |
6009 | case DEBUG_NONE: | |
4dc7ead9 | 6010 | case DEBUG_DWARF: |
252b5132 RH |
6011 | break; |
6012 | case DEBUG_STABS: | |
6013 | stabs_generate_asm_lineno (); | |
6014 | break; | |
6015 | case DEBUG_ECOFF: | |
6016 | ecoff_generate_asm_lineno (); | |
6017 | break; | |
252b5132 | 6018 | case DEBUG_DWARF2: |
4dc7ead9 RH |
6019 | /* ??? We could here indicate to dwarf2dbg.c that something |
6020 | has changed. However, since there is additional backend | |
6021 | support that is required (calling dwarf2_emit_insn), we | |
6022 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
6023 | break; |
6024 | } | |
6025 | } | |
6026 | ||
6027 | /* Output debugging information to mark a function entry point or end point. | |
6028 | END_P is zero for .func, and non-zero for .endfunc. */ | |
6029 | ||
6030 | void | |
39e6acbd | 6031 | s_func (int end_p) |
252b5132 RH |
6032 | { |
6033 | do_s_func (end_p, NULL); | |
6034 | } | |
6035 | ||
6036 | /* Subroutine of s_func so targets can choose a different default prefix. | |
6037 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
6038 | ||
87c245cc | 6039 | static void |
39e6acbd | 6040 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
6041 | { |
6042 | /* Record the current function so that we can issue an error message for | |
6043 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
6044 | arguments. */ | |
6045 | static char *current_name; | |
6046 | static char *current_label; | |
6047 | ||
6048 | if (end_p) | |
6049 | { | |
6050 | if (current_name == NULL) | |
6051 | { | |
6052 | as_bad (_("missing .func")); | |
6053 | ignore_rest_of_line (); | |
6054 | return; | |
6055 | } | |
6056 | ||
6057 | if (debug_type == DEBUG_STABS) | |
6058 | stabs_generate_asm_endfunc (current_name, current_label); | |
6059 | ||
6060 | current_name = current_label = NULL; | |
6061 | } | |
6062 | else /* ! end_p */ | |
6063 | { | |
041ff4dd NC |
6064 | char *name, *label; |
6065 | char delim1, delim2; | |
252b5132 RH |
6066 | |
6067 | if (current_name != NULL) | |
6068 | { | |
6069 | as_bad (_(".endfunc missing for previous .func")); | |
6070 | ignore_rest_of_line (); | |
6071 | return; | |
6072 | } | |
6073 | ||
d02603dc | 6074 | delim1 = get_symbol_name (& name); |
252b5132 RH |
6075 | name = xstrdup (name); |
6076 | *input_line_pointer = delim1; | |
d02603dc | 6077 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
6078 | if (*input_line_pointer != ',') |
6079 | { | |
6080 | if (default_prefix) | |
05f4ab67 AM |
6081 | { |
6082 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
6083 | as_fatal ("%s", xstrerror (errno)); | |
6084 | } | |
252b5132 RH |
6085 | else |
6086 | { | |
7be1c489 | 6087 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
6088 | /* Missing entry point, use function's name with the leading |
6089 | char prepended. */ | |
6090 | if (leading_char) | |
05f4ab67 AM |
6091 | { |
6092 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
6093 | as_fatal ("%s", xstrerror (errno)); | |
6094 | } | |
252b5132 RH |
6095 | else |
6096 | label = name; | |
6097 | } | |
6098 | } | |
6099 | else | |
6100 | { | |
6101 | ++input_line_pointer; | |
6102 | SKIP_WHITESPACE (); | |
d02603dc | 6103 | delim2 = get_symbol_name (& label); |
252b5132 | 6104 | label = xstrdup (label); |
d02603dc | 6105 | restore_line_pointer (delim2); |
252b5132 RH |
6106 | } |
6107 | ||
6108 | if (debug_type == DEBUG_STABS) | |
6109 | stabs_generate_asm_func (name, label); | |
6110 | ||
6111 | current_name = name; | |
6112 | current_label = label; | |
6113 | } | |
6114 | ||
6115 | demand_empty_rest_of_line (); | |
6116 | } | |
6117 | \f | |
fa94de6b RM |
6118 | #ifdef HANDLE_BUNDLE |
6119 | ||
6120 | void | |
6121 | s_bundle_align_mode (int arg ATTRIBUTE_UNUSED) | |
6122 | { | |
6123 | unsigned int align = get_absolute_expression (); | |
6124 | SKIP_WHITESPACE (); | |
6125 | demand_empty_rest_of_line (); | |
6126 | ||
6127 | if (align > (unsigned int) TC_ALIGN_LIMIT) | |
6128 | as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"), | |
6129 | (unsigned int) TC_ALIGN_LIMIT); | |
6130 | ||
6131 | if (bundle_lock_frag != NULL) | |
6132 | { | |
6133 | as_bad (_("cannot change .bundle_align_mode inside .bundle_lock")); | |
6134 | return; | |
6135 | } | |
6136 | ||
6137 | bundle_align_p2 = align; | |
6138 | } | |
6139 | ||
6140 | void | |
6141 | s_bundle_lock (int arg ATTRIBUTE_UNUSED) | |
6142 | { | |
6143 | demand_empty_rest_of_line (); | |
6144 | ||
6145 | if (bundle_align_p2 == 0) | |
6146 | { | |
6147 | as_bad (_(".bundle_lock is meaningless without .bundle_align_mode")); | |
6148 | return; | |
6149 | } | |
6150 | ||
d416e51d | 6151 | if (bundle_lock_depth == 0) |
fa94de6b | 6152 | { |
d416e51d RM |
6153 | bundle_lock_frchain = frchain_now; |
6154 | bundle_lock_frag = start_bundle (); | |
fa94de6b | 6155 | } |
d416e51d | 6156 | ++bundle_lock_depth; |
fa94de6b RM |
6157 | } |
6158 | ||
6159 | void | |
6160 | s_bundle_unlock (int arg ATTRIBUTE_UNUSED) | |
6161 | { | |
6162 | unsigned int size; | |
6163 | ||
6164 | demand_empty_rest_of_line (); | |
6165 | ||
6166 | if (bundle_lock_frag == NULL) | |
6167 | { | |
6168 | as_bad (_(".bundle_unlock without preceding .bundle_lock")); | |
6169 | return; | |
6170 | } | |
6171 | ||
6172 | gas_assert (bundle_align_p2 > 0); | |
6173 | ||
d416e51d RM |
6174 | gas_assert (bundle_lock_depth > 0); |
6175 | if (--bundle_lock_depth > 0) | |
6176 | return; | |
6177 | ||
fa94de6b RM |
6178 | size = pending_bundle_size (bundle_lock_frag); |
6179 | ||
6180 | if (size > (1U << bundle_align_p2)) | |
6181 | as_bad (_(".bundle_lock sequence is %u bytes, but bundle size only %u"), | |
6182 | size, 1 << bundle_align_p2); | |
6183 | else | |
6184 | finish_bundle (bundle_lock_frag, size); | |
6185 | ||
6186 | bundle_lock_frag = NULL; | |
6187 | bundle_lock_frchain = NULL; | |
6188 | } | |
6189 | ||
6190 | #endif /* HANDLE_BUNDLE */ | |
6191 | \f | |
041ff4dd | 6192 | void |
39e6acbd | 6193 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6194 | { |
40a4d956 | 6195 | ignore_rest_of_line (); |
252b5132 RH |
6196 | } |
6197 | ||
252b5132 | 6198 | void |
39e6acbd | 6199 | read_print_statistics (FILE *file) |
252b5132 RH |
6200 | { |
6201 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
6202 | } | |
6203 | ||
041ff4dd NC |
6204 | /* Inserts the given line into the input stream. |
6205 | ||
9f10757c TW |
6206 | This call avoids macro/conditionals nesting checking, since the contents of |
6207 | the line are assumed to replace the contents of a line already scanned. | |
6208 | ||
47eebc20 | 6209 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
6210 | called by md_start_line_hook(). The given line is assumed to already be |
6211 | properly scrubbed. */ | |
6212 | ||
6213 | void | |
39e6acbd | 6214 | input_scrub_insert_line (const char *line) |
9f10757c TW |
6215 | { |
6216 | sb newline; | |
d2ae702c L |
6217 | size_t len = strlen (line); |
6218 | sb_build (&newline, len); | |
6219 | sb_add_buffer (&newline, line, len); | |
9f10757c TW |
6220 | input_scrub_include_sb (&newline, input_line_pointer, 0); |
6221 | sb_kill (&newline); | |
6222 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6223 | } | |
6224 | ||
6225 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 6226 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
6227 | |
6228 | void | |
39e6acbd | 6229 | input_scrub_insert_file (char *path) |
9f10757c TW |
6230 | { |
6231 | input_scrub_include_file (path, input_line_pointer); | |
6232 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6233 | } | |
40a4d956 JB |
6234 | |
6235 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
6236 | ||
6237 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
6238 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
6239 | #endif | |
6240 | ||
6241 | static char * | |
7592cfd7 NC |
6242 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
6243 | int in_macro) | |
40a4d956 JB |
6244 | { |
6245 | char inquote = '\0'; | |
6246 | int inescape = 0; | |
6247 | ||
6248 | while (!is_end_of_line[(unsigned char) *s] | |
6249 | || (inquote && !ISCNTRL (*s)) | |
6250 | || (inquote == '\'' && flag_mri) | |
6251 | #ifdef TC_EOL_IN_INSN | |
6252 | || (insn && TC_EOL_IN_INSN (s)) | |
6253 | #endif | |
7592cfd7 NC |
6254 | /* PR 6926: When we are parsing the body of a macro the sequence |
6255 | \@ is special - it refers to the invocation count. If the @ | |
6256 | character happens to be registered as a line-separator character | |
6257 | by the target, then the is_end_of_line[] test above will have | |
6258 | returned true, but we need to ignore the line separating | |
6259 | semantics in this particular case. */ | |
6260 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
6261 | ) |
6262 | { | |
6263 | if (mri_string && *s == '\'') | |
6264 | inquote ^= *s; | |
6265 | else if (inescape) | |
6266 | inescape = 0; | |
6267 | else if (*s == '\\') | |
6268 | inescape = 1; | |
6269 | else if (!inquote | |
6270 | ? *s == '"' | |
6271 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
6272 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
6273 | #endif | |
6274 | : *s == inquote) | |
6275 | inquote ^= *s; | |
6276 | ++s; | |
6277 | } | |
6278 | if (inquote) | |
6279 | as_warn (_("missing closing `%c'"), inquote); | |
e74211b6 | 6280 | if (inescape && !ignore_input ()) |
40a4d956 JB |
6281 | as_warn (_("stray `\\'")); |
6282 | return s; | |
6283 | } | |
6284 | ||
6285 | char * | |
6286 | find_end_of_line (char *s, int mri_string) | |
6287 | { | |
7592cfd7 | 6288 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 6289 | } |