Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
f7e42eb4 | 2 | Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
3d540e93 | 3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
fa94de6b | 4 | 2010, 2011, 2012 Free Software Foundation, Inc. |
252b5132 | 5 | |
ec2655a6 | 6 | This file is part of GAS, the GNU Assembler. |
252b5132 | 7 | |
ec2655a6 NC |
8 | GAS is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3, or (at your option) | |
11 | any later version. | |
252b5132 | 12 | |
ec2655a6 NC |
13 | GAS is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
ec2655a6 NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
59c871b4 | 23 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
041ff4dd NC |
24 | But then, GNU isn't spozed to run on your machine anyway. |
25 | (RMS is so shortsighted sometimes.) */ | |
041ff4dd | 26 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 27 | |
252b5132 | 28 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 29 | grow when we do 4361 style flonums. */ |
252b5132 RH |
30 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
31 | ||
47eebc20 | 32 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
33 | Another group of these functions is in the expr.c module. */ |
34 | ||
252b5132 | 35 | #include "as.h" |
3882b010 | 36 | #include "safe-ctype.h" |
252b5132 RH |
37 | #include "subsegs.h" |
38 | #include "sb.h" | |
39 | #include "macro.h" | |
40 | #include "obstack.h" | |
252b5132 | 41 | #include "ecoff.h" |
54cfded0 | 42 | #include "dw2gencfi.h" |
7bfd842d | 43 | #include "wchar.h" |
252b5132 RH |
44 | |
45 | #ifndef TC_START_LABEL | |
5e8c8f8f | 46 | #define TC_START_LABEL(x,y,z) (x == ':') |
252b5132 RH |
47 | #endif |
48 | ||
8684e216 HPN |
49 | /* Set by the object-format or the target. */ |
50 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 51 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 52 | do \ |
d6415f6c AM |
53 | { \ |
54 | if ((SIZE) >= 8) \ | |
55 | (P2VAR) = 3; \ | |
56 | else if ((SIZE) >= 4) \ | |
57 | (P2VAR) = 2; \ | |
58 | else if ((SIZE) >= 2) \ | |
59 | (P2VAR) = 1; \ | |
60 | else \ | |
61 | (P2VAR) = 0; \ | |
041ff4dd NC |
62 | } \ |
63 | while (0) | |
8684e216 HPN |
64 | #endif |
65 | ||
041ff4dd | 66 | char *input_line_pointer; /*->next char of source file to parse. */ |
252b5132 RH |
67 | |
68 | #if BITS_PER_CHAR != 8 | |
69 | /* The following table is indexed by[(char)] and will break if | |
70 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
71 | die horribly; | |
72 | #endif | |
73 | ||
74 | #ifndef LEX_AT | |
252b5132 RH |
75 | #define LEX_AT 0 |
76 | #endif | |
77 | ||
78 | #ifndef LEX_BR | |
79 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
80 | #define LEX_BR 0 | |
81 | #endif | |
82 | ||
83 | #ifndef LEX_PCT | |
84 | /* The Delta 68k assembler permits % inside label names. */ | |
85 | #define LEX_PCT 0 | |
86 | #endif | |
87 | ||
88 | #ifndef LEX_QM | |
89 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
90 | #define LEX_QM 0 | |
91 | #endif | |
92 | ||
58b5739a | 93 | #ifndef LEX_HASH |
800eeca4 JW |
94 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
95 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
96 | #define LEX_HASH 0 |
97 | #endif | |
98 | ||
252b5132 | 99 | #ifndef LEX_DOLLAR |
252b5132 RH |
100 | #define LEX_DOLLAR 3 |
101 | #endif | |
102 | ||
103 | #ifndef LEX_TILDE | |
104 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
105 | #define LEX_TILDE 0 | |
106 | #endif | |
107 | ||
041ff4dd | 108 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 109 | char lex_type[256] = { |
252b5132 RH |
110 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 112 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
113 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
114 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
115 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
116 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 117 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
118 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
124 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
125 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
126 | }; | |
127 | ||
041ff4dd | 128 | /* In: a character. |
d67ffd56 L |
129 | Out: 1 if this character ends a line. |
130 | 2 if this character is a line separator. */ | |
ef99799a | 131 | char is_end_of_line[256] = { |
252b5132 | 132 | #ifdef CR_EOL |
b75c0c92 | 133 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 134 | #else |
b75c0c92 | 135 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 136 | #endif |
b75c0c92 AM |
137 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
150 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
151 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 152 | }; |
252b5132 | 153 | |
a8a3b3b2 | 154 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
155 | char original_case_string[128]; |
156 | #endif | |
157 | ||
041ff4dd | 158 | /* Functions private to this file. */ |
252b5132 | 159 | |
041ff4dd NC |
160 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
161 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 162 | |
041ff4dd NC |
163 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
164 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
165 | internals manual. */ | |
252b5132 RH |
166 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
167 | ||
041ff4dd | 168 | /* Variables for handling include file directory table. */ |
252b5132 | 169 | |
041ff4dd NC |
170 | /* Table of pointers to directories to search for .include's. */ |
171 | char **include_dirs; | |
172 | ||
173 | /* How many are in the table. */ | |
174 | int include_dir_count; | |
175 | ||
176 | /* Length of longest in table. */ | |
177 | int include_dir_maxlen = 1; | |
252b5132 RH |
178 | |
179 | #ifndef WORKING_DOT_WORD | |
180 | struct broken_word *broken_words; | |
181 | int new_broken_words; | |
182 | #endif | |
183 | ||
184 | /* The current offset into the absolute section. We don't try to | |
185 | build frags in the absolute section, since no data can be stored | |
186 | there. We just keep track of the current offset. */ | |
187 | addressT abs_section_offset; | |
188 | ||
189 | /* If this line had an MRI style label, it is stored in this variable. | |
190 | This is used by some of the MRI pseudo-ops. */ | |
191 | symbolS *line_label; | |
192 | ||
193 | /* This global variable is used to support MRI common sections. We | |
194 | translate such sections into a common symbol. This variable is | |
195 | non-NULL when we are in an MRI common section. */ | |
196 | symbolS *mri_common_symbol; | |
197 | ||
198 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
199 | need to align to an even byte boundary unless the next pseudo-op is | |
200 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
201 | may be needed. */ | |
202 | static int mri_pending_align; | |
203 | ||
204 | #ifndef NO_LISTING | |
205 | #ifdef OBJ_ELF | |
206 | /* This variable is set to be non-zero if the next string we see might | |
207 | be the name of the source file in DWARF debugging information. See | |
208 | the comment in emit_expr for the format we look for. */ | |
209 | static int dwarf_file_string; | |
210 | #endif | |
211 | #endif | |
212 | ||
fa94de6b RM |
213 | /* If the target defines the md_frag_max_var hook then we know |
214 | enough to implement the .bundle_align_mode features. */ | |
215 | #ifdef md_frag_max_var | |
216 | # define HANDLE_BUNDLE | |
217 | #endif | |
218 | ||
219 | #ifdef HANDLE_BUNDLE | |
220 | /* .bundle_align_mode sets this. Normally it's zero. When nonzero, | |
221 | it's the exponent of the bundle size, and aligned instruction bundle | |
222 | mode is in effect. */ | |
223 | static unsigned int bundle_align_p2; | |
224 | ||
225 | /* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets | |
226 | bundle_lock_frag to frag_now and then starts a new frag with | |
227 | frag_align_code. At the same time, bundle_lock_frain gets frchain_now, | |
228 | so that .bundle_unlock can verify that we didn't change segments. | |
229 | .bundle_unlock resets both to NULL. If we detect a bundling violation, | |
230 | then we reset bundle_lock_frchain to NULL as an indicator that we've | |
231 | already diagnosed the error with as_bad and don't need a cascade of | |
232 | redundant errors, but bundle_lock_frag remains set to indicate that | |
233 | we are expecting to see .bundle_unlock. */ | |
234 | static fragS *bundle_lock_frag; | |
235 | static frchainS *bundle_lock_frchain; | |
d416e51d RM |
236 | |
237 | /* This is incremented by .bundle_lock and decremented by .bundle_unlock, | |
238 | to allow nesting. */ | |
239 | static unsigned int bundle_lock_depth; | |
fa94de6b RM |
240 | #endif |
241 | ||
87c245cc | 242 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd KH |
243 | static void do_align (int, char *, int, int); |
244 | static void s_align (int, int); | |
caa32fe5 | 245 | static void s_altmacro (int); |
057f53c1 | 246 | static void s_bad_end (int); |
05e9452c | 247 | static void s_reloc (int); |
39e6acbd | 248 | static int hex_float (int, char *); |
39e6acbd KH |
249 | static segT get_known_segmented_expression (expressionS * expP); |
250 | static void pobegin (void); | |
39a45edc | 251 | static size_t get_non_macro_line_sb (sb *); |
39e6acbd | 252 | static void generate_file_debug (void); |
7592cfd7 | 253 | static char *_find_end_of_line (char *, int, int, int); |
252b5132 | 254 | \f |
252b5132 | 255 | void |
39e6acbd | 256 | read_begin (void) |
252b5132 RH |
257 | { |
258 | const char *p; | |
259 | ||
260 | pobegin (); | |
261 | obj_read_begin_hook (); | |
262 | ||
263 | /* Something close -- but not too close -- to a multiple of 1024. | |
264 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
265 | obstack_begin (¬es, chunksize); | |
266 | obstack_begin (&cond_obstack, chunksize); | |
267 | ||
041ff4dd | 268 | /* Use machine dependent syntax. */ |
252b5132 | 269 | for (p = 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); |
87c245cc BE |
489 | if (exp->X_op != O_constant) |
490 | { | |
491 | if (exp->X_op != O_absent) | |
492 | as_bad (_("bad or irreducible absolute expression")); | |
493 | exp->X_add_number = 0; | |
494 | } | |
495 | return exp->X_add_number; | |
496 | } | |
497 | ||
498 | offsetT | |
499 | get_absolute_expression (void) | |
500 | { | |
501 | expressionS exp; | |
502 | ||
503 | return get_absolute_expr (&exp); | |
504 | } | |
505 | ||
252b5132 RH |
506 | static int pop_override_ok = 0; |
507 | static const char *pop_table_name; | |
508 | ||
509 | void | |
39e6acbd | 510 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
511 | { |
512 | const char *errtxt; | |
513 | const pseudo_typeS *pop; | |
514 | for (pop = table; pop->poc_name; pop++) | |
515 | { | |
516 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
517 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
518 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
519 | errtxt); | |
520 | } | |
521 | } | |
522 | ||
523 | #ifndef md_pop_insert | |
524 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
525 | #endif | |
526 | ||
527 | #ifndef obj_pop_insert | |
528 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
529 | #endif | |
530 | ||
54cfded0 AM |
531 | #ifndef cfi_pop_insert |
532 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
533 | #endif | |
534 | ||
041ff4dd | 535 | static void |
39e6acbd | 536 | pobegin (void) |
252b5132 RH |
537 | { |
538 | po_hash = hash_new (); | |
539 | ||
041ff4dd | 540 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
541 | pop_table_name = "md"; |
542 | md_pop_insert (); | |
543 | ||
041ff4dd | 544 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
545 | pop_table_name = "obj"; |
546 | pop_override_ok = 1; | |
547 | obj_pop_insert (); | |
548 | ||
041ff4dd | 549 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
550 | pop_table_name = "standard"; |
551 | pop_insert (potable); | |
d6415f6c | 552 | |
d58a1929 | 553 | /* Now CFI ones. */ |
54cfded0 AM |
554 | pop_table_name = "cfi"; |
555 | pop_override_ok = 1; | |
556 | cfi_pop_insert (); | |
252b5132 RH |
557 | } |
558 | \f | |
559 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
560 | if (ignore_input ()) \ | |
561 | { \ | |
7592cfd7 | 562 | char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \ |
40a4d956 JB |
563 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
564 | && eol >= buffer_limit) \ | |
565 | ? buffer_limit \ | |
566 | : eol + 1; \ | |
252b5132 RH |
567 | continue; \ |
568 | } | |
569 | ||
252b5132 RH |
570 | /* This function is used when scrubbing the characters between #APP |
571 | and #NO_APP. */ | |
572 | ||
573 | static char *scrub_string; | |
574 | static char *scrub_string_end; | |
575 | ||
39a45edc AM |
576 | static size_t |
577 | scrub_from_string (char *buf, size_t buflen) | |
252b5132 | 578 | { |
39a45edc | 579 | size_t copy; |
2b47531b ILT |
580 | |
581 | copy = scrub_string_end - scrub_string; | |
582 | if (copy > buflen) | |
583 | copy = buflen; | |
584 | memcpy (buf, scrub_string, copy); | |
585 | scrub_string += copy; | |
586 | return copy; | |
252b5132 RH |
587 | } |
588 | ||
5e75c3ab JB |
589 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
590 | static int | |
591 | try_macro (char term, const char *line) | |
592 | { | |
593 | sb out; | |
594 | const char *err; | |
595 | macro_entry *macro; | |
596 | ||
597 | if (check_macro (line, &out, &err, ¯o)) | |
598 | { | |
599 | if (err != NULL) | |
600 | as_bad ("%s", err); | |
601 | *input_line_pointer++ = term; | |
602 | input_scrub_include_sb (&out, | |
603 | input_line_pointer, 1); | |
604 | sb_kill (&out); | |
605 | buffer_limit = | |
606 | input_scrub_next_buffer (&input_line_pointer); | |
607 | #ifdef md_macro_info | |
608 | md_macro_info (macro); | |
609 | #endif | |
610 | return 1; | |
611 | } | |
612 | return 0; | |
613 | } | |
614 | ||
fa94de6b RM |
615 | #ifdef HANDLE_BUNDLE |
616 | /* Start a new instruction bundle. Returns the rs_align_code frag that | |
617 | will be used to align the new bundle. */ | |
618 | static fragS * | |
619 | start_bundle (void) | |
620 | { | |
621 | fragS *frag = frag_now; | |
622 | ||
623 | frag_align_code (0, 0); | |
624 | ||
625 | while (frag->fr_type != rs_align_code) | |
626 | frag = frag->fr_next; | |
627 | ||
628 | gas_assert (frag != frag_now); | |
629 | ||
630 | return frag; | |
631 | } | |
632 | ||
633 | /* Calculate the maximum size after relaxation of the region starting | |
634 | at the given frag and extending through frag_now (which is unfinished). */ | |
635 | static unsigned int | |
636 | pending_bundle_size (fragS *frag) | |
637 | { | |
638 | unsigned int offset = frag->fr_fix; | |
639 | unsigned int size = 0; | |
640 | ||
641 | gas_assert (frag != frag_now); | |
642 | gas_assert (frag->fr_type == rs_align_code); | |
643 | ||
644 | while (frag != frag_now) | |
645 | { | |
646 | /* This should only happen in what will later become an error case. */ | |
647 | if (frag == NULL) | |
648 | return 0; | |
649 | ||
650 | size += frag->fr_fix; | |
651 | if (frag->fr_type == rs_machine_dependent) | |
652 | size += md_frag_max_var (frag); | |
653 | ||
654 | frag = frag->fr_next; | |
655 | } | |
656 | ||
657 | gas_assert (frag == frag_now); | |
658 | size += frag_now_fix (); | |
659 | if (frag->fr_type == rs_machine_dependent) | |
660 | size += md_frag_max_var (frag); | |
661 | ||
662 | gas_assert (size >= offset); | |
663 | ||
664 | return size - offset; | |
665 | } | |
666 | ||
667 | /* Finish off the frag created to ensure bundle alignment. */ | |
668 | static void | |
669 | finish_bundle (fragS *frag, unsigned int size) | |
670 | { | |
671 | gas_assert (bundle_align_p2 > 0); | |
672 | gas_assert (frag->fr_type == rs_align_code); | |
673 | ||
674 | if (size > 1) | |
675 | { | |
676 | /* If there is more than a single byte, then we need to set up the | |
677 | alignment frag. Otherwise we leave it at its initial state from | |
678 | calling frag_align_code (0, 0), so that it does nothing. */ | |
679 | frag->fr_offset = bundle_align_p2; | |
680 | frag->fr_subtype = size - 1; | |
681 | } | |
682 | ||
683 | /* We do this every time rather than just in s_bundle_align_mode | |
684 | so that we catch any affected section without needing hooks all | |
685 | over for all paths that do section changes. It's cheap enough. */ | |
686 | record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER); | |
687 | } | |
688 | ||
689 | /* Assemble one instruction. This takes care of the bundle features | |
690 | around calling md_assemble. */ | |
691 | static void | |
692 | assemble_one (char *line) | |
693 | { | |
8d3eaee6 | 694 | fragS *insn_start_frag = NULL; |
fa94de6b RM |
695 | |
696 | if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now) | |
697 | { | |
698 | as_bad (_("cannot change section or subsection inside .bundle_lock")); | |
699 | /* Clearing this serves as a marker that we have already complained. */ | |
700 | bundle_lock_frchain = NULL; | |
701 | } | |
702 | ||
703 | if (bundle_lock_frchain == NULL && bundle_align_p2 > 0) | |
704 | insn_start_frag = start_bundle (); | |
705 | ||
706 | md_assemble (line); | |
707 | ||
708 | if (bundle_lock_frchain != NULL) | |
709 | { | |
710 | /* Make sure this hasn't pushed the locked sequence | |
711 | past the bundle size. */ | |
712 | unsigned int bundle_size = pending_bundle_size (bundle_lock_frag); | |
713 | if (bundle_size > (1U << bundle_align_p2)) | |
714 | as_bad (_("\ | |
715 | .bundle_lock sequence at %u bytes but .bundle_align_mode limit is %u bytes"), | |
716 | bundle_size, 1U << bundle_align_p2); | |
717 | } | |
718 | else if (bundle_align_p2 > 0) | |
719 | { | |
720 | unsigned int insn_size = pending_bundle_size (insn_start_frag); | |
721 | ||
722 | if (insn_size > (1U << bundle_align_p2)) | |
723 | as_bad (_("\ | |
724 | single instruction is %u bytes long but .bundle_align_mode limit is %u"), | |
725 | (unsigned int) insn_size, 1U << bundle_align_p2); | |
726 | ||
727 | finish_bundle (insn_start_frag, insn_size); | |
728 | } | |
729 | } | |
730 | ||
731 | #else /* !HANDLE_BUNDLE */ | |
732 | ||
733 | # define assemble_one(line) md_assemble(line) | |
734 | ||
735 | #endif /* HANDLE_BUNDLE */ | |
736 | ||
041ff4dd NC |
737 | /* We read the file, putting things into a web that represents what we |
738 | have been reading. */ | |
739 | void | |
39e6acbd | 740 | read_a_source_file (char *name) |
252b5132 | 741 | { |
91d6fa6a NC |
742 | char c; |
743 | char *s; /* String of symbol, '\0' appended. */ | |
744 | int temp; | |
252b5132 RH |
745 | pseudo_typeS *pop; |
746 | ||
4c400d5e AM |
747 | #ifdef WARN_COMMENTS |
748 | found_comment = 0; | |
749 | #endif | |
750 | ||
252b5132 RH |
751 | buffer = input_scrub_new_file (name); |
752 | ||
753 | listing_file (name); | |
754 | listing_newline (NULL); | |
755 | register_dependency (name); | |
756 | ||
757 | /* Generate debugging information before we've read anything in to denote | |
758 | this file as the "main" source file and not a subordinate one | |
759 | (e.g. N_SO vs N_SOL in stabs). */ | |
760 | generate_file_debug (); | |
761 | ||
762 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 763 | { /* We have another line to parse. */ |
5e75c3ab JB |
764 | #ifndef NO_LISTING |
765 | /* In order to avoid listing macro expansion lines with labels | |
766 | multiple times, keep track of which line was last issued. */ | |
767 | static char *last_eol; | |
768 | ||
769 | last_eol = NULL; | |
770 | #endif | |
252b5132 RH |
771 | while (input_line_pointer < buffer_limit) |
772 | { | |
f19df8f7 | 773 | bfd_boolean was_new_line; |
041ff4dd | 774 | /* We have more of this buffer to parse. */ |
252b5132 | 775 | |
041ff4dd NC |
776 | /* We now have input_line_pointer->1st char of next line. |
777 | If input_line_pointer [-1] == '\n' then we just | |
778 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
779 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
780 | if (was_new_line) | |
252b5132 | 781 | { |
4a826962 | 782 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
783 | #ifdef md_start_line_hook |
784 | md_start_line_hook (); | |
785 | #endif | |
252b5132 RH |
786 | if (input_line_pointer[-1] == '\n') |
787 | bump_line_counters (); | |
f19df8f7 | 788 | } |
252b5132 | 789 | |
f19df8f7 AM |
790 | #ifndef NO_LISTING |
791 | /* If listing is on, and we are expanding a macro, then give | |
792 | the listing code the contents of the expanded line. */ | |
793 | if (listing) | |
794 | { | |
795 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
796 | { | |
797 | /* Find the end of the current expanded macro line. */ | |
798 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
799 | ||
800 | if (s != last_eol) | |
801 | { | |
802 | char *copy; | |
803 | int len; | |
804 | ||
805 | last_eol = s; | |
806 | /* Copy it for safe keeping. Also give an indication of | |
807 | how much macro nesting is involved at this point. */ | |
808 | len = s - input_line_pointer; | |
809 | copy = (char *) xmalloc (len + macro_nest + 2); | |
810 | memset (copy, '>', macro_nest); | |
811 | copy[macro_nest] = ' '; | |
812 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
813 | copy[macro_nest + 1 + len] = '\0'; | |
814 | ||
815 | /* Install the line with the listing facility. */ | |
816 | listing_newline (copy); | |
817 | } | |
818 | } | |
819 | else | |
820 | listing_newline (NULL); | |
821 | } | |
822 | #endif | |
823 | if (was_new_line) | |
824 | { | |
252b5132 RH |
825 | line_label = NULL; |
826 | ||
abd63a32 | 827 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
828 | { |
829 | /* Text at the start of a line must be a label, we | |
830 | run down and stick a colon in. */ | |
831 | if (is_name_beginner (*input_line_pointer)) | |
832 | { | |
833 | char *line_start = input_line_pointer; | |
252b5132 RH |
834 | int mri_line_macro; |
835 | ||
252b5132 RH |
836 | HANDLE_CONDITIONAL_ASSEMBLY (); |
837 | ||
838 | c = get_symbol_end (); | |
839 | ||
840 | /* In MRI mode, the EQU and MACRO pseudoops must | |
841 | be handled specially. */ | |
842 | mri_line_macro = 0; | |
843 | if (flag_m68k_mri) | |
844 | { | |
845 | char *rest = input_line_pointer + 1; | |
846 | ||
847 | if (*rest == ':') | |
848 | ++rest; | |
849 | if (*rest == ' ' || *rest == '\t') | |
850 | ++rest; | |
851 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
852 | || strncasecmp (rest, "SET", 3) == 0) | |
853 | && (rest[3] == ' ' || rest[3] == '\t')) | |
854 | { | |
855 | input_line_pointer = rest + 3; | |
856 | equals (line_start, | |
857 | strncasecmp (rest, "SET", 3) == 0); | |
858 | continue; | |
859 | } | |
860 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
861 | && (rest[5] == ' ' | |
862 | || rest[5] == '\t' | |
863 | || is_end_of_line[(unsigned char) rest[5]])) | |
864 | mri_line_macro = 1; | |
865 | } | |
866 | ||
867 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
868 | pseudo-op specially: we don't want to put the |
869 | symbol in the symbol table. */ | |
041ff4dd | 870 | if (!mri_line_macro |
a25c045a | 871 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
872 | && TC_START_LABEL_WITHOUT_COLON(c, |
873 | input_line_pointer) | |
a25c045a | 874 | #endif |
ef99799a | 875 | ) |
252b5132 RH |
876 | line_label = colon (line_start); |
877 | else | |
878 | line_label = symbol_create (line_start, | |
879 | absolute_section, | |
880 | (valueT) 0, | |
881 | &zero_address_frag); | |
882 | ||
883 | *input_line_pointer = c; | |
884 | if (c == ':') | |
885 | input_line_pointer++; | |
886 | } | |
887 | } | |
888 | } | |
889 | ||
47eebc20 | 890 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
891 | We expect a well-formed assembler statement. |
892 | A "symbol-name:" is a statement. | |
f0e652b4 | 893 | |
041ff4dd NC |
894 | Depending on what compiler is used, the order of these tests |
895 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
896 | Each test is independent of all other tests at the (top) |
897 | level. */ | |
898 | do | |
041ff4dd | 899 | c = *input_line_pointer++; |
d2bdaea8 | 900 | while (c == '\t' || c == ' ' || c == '\f'); |
252b5132 | 901 | |
041ff4dd NC |
902 | /* C is the 1st significant character. |
903 | Input_line_pointer points after that character. */ | |
252b5132 RH |
904 | if (is_name_beginner (c)) |
905 | { | |
041ff4dd | 906 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
907 | HANDLE_CONDITIONAL_ASSEMBLY (); |
908 | ||
909 | s = --input_line_pointer; | |
041ff4dd NC |
910 | c = get_symbol_end (); /* name's delimiter. */ |
911 | ||
912 | /* C is character after symbol. | |
d6415f6c AM |
913 | That character's place in the input line is now '\0'. |
914 | S points to the beginning of the symbol. | |
915 | [In case of pseudo-op, s->'.'.] | |
916 | Input_line_pointer->'\0' where c was. */ | |
5e8c8f8f | 917 | if (TC_START_LABEL (c, s, input_line_pointer)) |
252b5132 RH |
918 | { |
919 | if (flag_m68k_mri) | |
920 | { | |
921 | char *rest = input_line_pointer + 1; | |
922 | ||
923 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
924 | if (*rest == ':') |
925 | ++rest; | |
f0e652b4 | 926 | |
252b5132 RH |
927 | if (*rest == ' ' || *rest == '\t') |
928 | ++rest; | |
f0e652b4 | 929 | |
252b5132 RH |
930 | if ((strncasecmp (rest, "EQU", 3) == 0 |
931 | || strncasecmp (rest, "SET", 3) == 0) | |
932 | && (rest[3] == ' ' || rest[3] == '\t')) | |
933 | { | |
934 | input_line_pointer = rest + 3; | |
935 | equals (s, 1); | |
936 | continue; | |
937 | } | |
938 | } | |
939 | ||
041ff4dd NC |
940 | line_label = colon (s); /* User-defined label. */ |
941 | /* Put ':' back for error messages' sake. */ | |
942 | *input_line_pointer++ = ':'; | |
a645d1eb L |
943 | #ifdef tc_check_label |
944 | tc_check_label (line_label); | |
945 | #endif | |
041ff4dd | 946 | /* Input_line_pointer->after ':'. */ |
252b5132 | 947 | SKIP_WHITESPACE (); |
252b5132 | 948 | } |
fa94de6b | 949 | else if ((c == '=' && input_line_pointer[1] == '=') |
18d7868b HPN |
950 | || ((c == ' ' || c == '\t') |
951 | && input_line_pointer[1] == '=' | |
952 | && input_line_pointer[2] == '=')) | |
9497f5ac NC |
953 | { |
954 | equals (s, -1); | |
955 | demand_empty_rest_of_line (); | |
956 | } | |
fa94de6b RM |
957 | else if ((c == '=' |
958 | || ((c == ' ' || c == '\t') | |
959 | && input_line_pointer[1] == '=')) | |
ee3c9814 | 960 | #ifdef TC_EQUAL_IN_INSN |
fa94de6b | 961 | && !TC_EQUAL_IN_INSN (c, s) |
ee3c9814 | 962 | #endif |
fa94de6b | 963 | ) |
252b5132 RH |
964 | { |
965 | equals (s, 1); | |
966 | demand_empty_rest_of_line (); | |
967 | } | |
968 | else | |
041ff4dd NC |
969 | { |
970 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
971 | pop = NULL; |
972 | ||
a8a3b3b2 | 973 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
974 | { |
975 | char *s2 = s; | |
37d8bb27 NC |
976 | |
977 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
978 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 979 | |
252b5132 RH |
980 | while (*s2) |
981 | { | |
3882b010 | 982 | *s2 = TOLOWER (*s2); |
252b5132 RH |
983 | s2++; |
984 | } | |
985 | } | |
986 | #endif | |
abd63a32 | 987 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 988 | { |
7be1c489 AM |
989 | /* The MRI assembler uses pseudo-ops without |
990 | a period. */ | |
252b5132 RH |
991 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
992 | if (pop != NULL && pop->poc_handler == NULL) | |
993 | pop = NULL; | |
994 | } | |
995 | ||
996 | if (pop != NULL | |
041ff4dd | 997 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 998 | { |
041ff4dd | 999 | /* PSEUDO - OP. |
f0e652b4 | 1000 | |
d6415f6c AM |
1001 | WARNING: c has next char, which may be end-of-line. |
1002 | We lookup the pseudo-op table with s+1 because we | |
1003 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
1004 | |
1005 | if (pop == NULL) | |
1006 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
1007 | if (pop && !pop->poc_handler) |
1008 | pop = NULL; | |
252b5132 RH |
1009 | |
1010 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
1011 | automatic alignment directive. What a hack |
1012 | this is. */ | |
252b5132 RH |
1013 | if (mri_pending_align |
1014 | && (pop == NULL | |
041ff4dd NC |
1015 | || !((pop->poc_handler == cons |
1016 | && pop->poc_val == 1) | |
1017 | || (pop->poc_handler == s_space | |
1018 | && pop->poc_val == 1) | |
252b5132 | 1019 | #ifdef tc_conditional_pseudoop |
041ff4dd | 1020 | || tc_conditional_pseudoop (pop) |
252b5132 | 1021 | #endif |
041ff4dd NC |
1022 | || pop->poc_handler == s_if |
1023 | || pop->poc_handler == s_ifdef | |
1024 | || pop->poc_handler == s_ifc | |
1025 | || pop->poc_handler == s_ifeqs | |
1026 | || pop->poc_handler == s_else | |
1027 | || pop->poc_handler == s_endif | |
1028 | || pop->poc_handler == s_globl | |
1029 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
1030 | { |
1031 | do_align (1, (char *) NULL, 0, 0); | |
1032 | mri_pending_align = 0; | |
f0e652b4 | 1033 | |
252b5132 RH |
1034 | if (line_label != NULL) |
1035 | { | |
2b47531b | 1036 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1037 | S_SET_VALUE (line_label, frag_now_fix ()); |
1038 | } | |
1039 | } | |
1040 | ||
041ff4dd | 1041 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
1042 | if (pop == NULL) |
1043 | { | |
5e75c3ab JB |
1044 | char *end = input_line_pointer; |
1045 | ||
252b5132 RH |
1046 | *input_line_pointer = c; |
1047 | s_ignore (0); | |
5e75c3ab JB |
1048 | c = *--input_line_pointer; |
1049 | *input_line_pointer = '\0'; | |
1050 | if (! macro_defined || ! try_macro (c, s)) | |
1051 | { | |
1052 | *end = '\0'; | |
1053 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
1054 | *input_line_pointer++ = c; | |
1055 | } | |
252b5132 RH |
1056 | continue; |
1057 | } | |
1058 | ||
041ff4dd | 1059 | /* Put it back for error messages etc. */ |
252b5132 RH |
1060 | *input_line_pointer = c; |
1061 | /* The following skip of whitespace is compulsory. | |
1062 | A well shaped space is sometimes all that separates | |
041ff4dd | 1063 | keyword from operands. */ |
252b5132 RH |
1064 | if (c == ' ' || c == '\t') |
1065 | input_line_pointer++; | |
041ff4dd NC |
1066 | |
1067 | /* Input_line is restored. | |
d6415f6c AM |
1068 | Input_line_pointer->1st non-blank char |
1069 | after pseudo-operation. */ | |
252b5132 RH |
1070 | (*pop->poc_handler) (pop->poc_val); |
1071 | ||
1072 | /* If that was .end, just get out now. */ | |
1073 | if (pop->poc_handler == s_end) | |
1074 | goto quit; | |
1075 | } | |
1076 | else | |
1077 | { | |
041ff4dd NC |
1078 | /* WARNING: c has char, which may be end-of-line. */ |
1079 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 | 1080 | *input_line_pointer = c; |
7592cfd7 | 1081 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
252b5132 RH |
1082 | c = *input_line_pointer; |
1083 | *input_line_pointer = '\0'; | |
1084 | ||
1085 | generate_lineno_debug (); | |
1086 | ||
5e75c3ab JB |
1087 | if (macro_defined && try_macro (c, s)) |
1088 | continue; | |
252b5132 RH |
1089 | |
1090 | if (mri_pending_align) | |
1091 | { | |
1092 | do_align (1, (char *) NULL, 0, 0); | |
1093 | mri_pending_align = 0; | |
1094 | if (line_label != NULL) | |
1095 | { | |
2b47531b | 1096 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1097 | S_SET_VALUE (line_label, frag_now_fix ()); |
1098 | } | |
1099 | } | |
1100 | ||
fa94de6b | 1101 | assemble_one (s); /* Assemble 1 instruction. */ |
252b5132 RH |
1102 | |
1103 | *input_line_pointer++ = c; | |
1104 | ||
1105 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
1106 | this instruction. */ |
1107 | } | |
1108 | } | |
252b5132 | 1109 | continue; |
041ff4dd | 1110 | } |
252b5132 RH |
1111 | |
1112 | /* Empty statement? */ | |
1113 | if (is_end_of_line[(unsigned char) c]) | |
1114 | continue; | |
1115 | ||
3882b010 | 1116 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 1117 | { |
041ff4dd | 1118 | /* local label ("4:") */ |
252b5132 RH |
1119 | char *backup = input_line_pointer; |
1120 | ||
1121 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1122 | ||
1123 | temp = c - '0'; | |
1124 | ||
041ff4dd | 1125 | /* Read the whole number. */ |
3882b010 | 1126 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
1127 | { |
1128 | temp = (temp * 10) + *input_line_pointer - '0'; | |
1129 | ++input_line_pointer; | |
041ff4dd | 1130 | } |
252b5132 RH |
1131 | |
1132 | if (LOCAL_LABELS_DOLLAR | |
1133 | && *input_line_pointer == '$' | |
1134 | && *(input_line_pointer + 1) == ':') | |
1135 | { | |
1136 | input_line_pointer += 2; | |
1137 | ||
1138 | if (dollar_label_defined (temp)) | |
1139 | { | |
1140 | as_fatal (_("label \"%d$\" redefined"), temp); | |
1141 | } | |
1142 | ||
1143 | define_dollar_label (temp); | |
1144 | colon (dollar_label_name (temp, 0)); | |
1145 | continue; | |
1146 | } | |
1147 | ||
1148 | if (LOCAL_LABELS_FB | |
1149 | && *input_line_pointer++ == ':') | |
1150 | { | |
1151 | fb_label_instance_inc (temp); | |
1152 | colon (fb_label_name (temp, 0)); | |
1153 | continue; | |
1154 | } | |
1155 | ||
1156 | input_line_pointer = backup; | |
1157 | } /* local label ("4:") */ | |
1158 | ||
1159 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 1160 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1161 | sb sbuf; |
252b5132 RH |
1162 | char *ends; |
1163 | char *new_buf; | |
1164 | char *new_tmp; | |
1165 | unsigned int new_length; | |
1166 | char *tmp_buf = 0; | |
1167 | ||
252b5132 RH |
1168 | s = input_line_pointer; |
1169 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1170 | { |
1171 | /* We ignore it. */ | |
1172 | ignore_rest_of_line (); | |
1173 | continue; | |
1174 | } | |
1175 | bump_line_counters (); | |
252b5132 RH |
1176 | s += 4; |
1177 | ||
1178 | ends = strstr (s, "#NO_APP\n"); | |
1179 | ||
1180 | if (!ends) | |
1181 | { | |
1182 | unsigned int tmp_len; | |
1183 | unsigned int num; | |
1184 | ||
1185 | /* The end of the #APP wasn't in this buffer. We | |
1186 | keep reading in buffers until we find the #NO_APP | |
1187 | that goes with this #APP There is one. The specs | |
47eebc20 | 1188 | guarantee it... */ |
252b5132 | 1189 | tmp_len = buffer_limit - s; |
1e9cc1c2 | 1190 | tmp_buf = (char *) xmalloc (tmp_len + 1); |
252b5132 RH |
1191 | memcpy (tmp_buf, s, tmp_len); |
1192 | do | |
1193 | { | |
1194 | new_tmp = input_scrub_next_buffer (&buffer); | |
1195 | if (!new_tmp) | |
1196 | break; | |
1197 | else | |
1198 | buffer_limit = new_tmp; | |
1199 | input_line_pointer = buffer; | |
1200 | ends = strstr (buffer, "#NO_APP\n"); | |
1201 | if (ends) | |
1202 | num = ends - buffer; | |
1203 | else | |
1204 | num = buffer_limit - buffer; | |
1205 | ||
1e9cc1c2 | 1206 | tmp_buf = (char *) xrealloc (tmp_buf, tmp_len + num); |
252b5132 RH |
1207 | memcpy (tmp_buf + tmp_len, buffer, num); |
1208 | tmp_len += num; | |
1209 | } | |
1210 | while (!ends); | |
1211 | ||
1212 | input_line_pointer = ends ? ends + 8 : NULL; | |
1213 | ||
1214 | s = tmp_buf; | |
1215 | ends = s + tmp_len; | |
1216 | ||
1217 | } | |
1218 | else | |
1219 | { | |
1220 | input_line_pointer = ends + 8; | |
1221 | } | |
1222 | ||
1223 | scrub_string = s; | |
1224 | scrub_string_end = ends; | |
1225 | ||
1226 | new_length = ends - s; | |
1227 | new_buf = (char *) xmalloc (new_length); | |
1228 | new_tmp = new_buf; | |
1229 | for (;;) | |
1230 | { | |
39a45edc AM |
1231 | size_t space; |
1232 | size_t size; | |
252b5132 RH |
1233 | |
1234 | space = (new_buf + new_length) - new_tmp; | |
1235 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1236 | ||
1237 | if (size < space) | |
1238 | { | |
64e55042 | 1239 | new_tmp[size] = 0; |
252b5132 RH |
1240 | break; |
1241 | } | |
1242 | ||
1e9cc1c2 | 1243 | new_buf = (char *) xrealloc (new_buf, new_length + 100); |
252b5132 RH |
1244 | new_tmp = new_buf + new_length; |
1245 | new_length += 100; | |
1246 | } | |
1247 | ||
1248 | if (tmp_buf) | |
1249 | free (tmp_buf); | |
f0e652b4 | 1250 | |
64e55042 HPN |
1251 | /* We've "scrubbed" input to the preferred format. In the |
1252 | process we may have consumed the whole of the remaining | |
1253 | file (and included files). We handle this formatted | |
1254 | input similar to that of macro expansion, letting | |
1255 | actual macro expansion (possibly nested) and other | |
1256 | input expansion work. Beware that in messages, line | |
1257 | numbers and possibly file names will be incorrect. */ | |
d2ae702c L |
1258 | new_length = strlen (new_buf); |
1259 | sb_build (&sbuf, new_length); | |
1260 | sb_add_buffer (&sbuf, new_buf, new_length); | |
64e55042 HPN |
1261 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); |
1262 | sb_kill (&sbuf); | |
1263 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1264 | free (new_buf); | |
252b5132 RH |
1265 | continue; |
1266 | } | |
1267 | ||
1268 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1269 | ||
1270 | #ifdef tc_unrecognized_line | |
1271 | if (tc_unrecognized_line (c)) | |
1272 | continue; | |
1273 | #endif | |
0e389e77 | 1274 | input_line_pointer--; |
601e61cd | 1275 | /* Report unknown char as error. */ |
c95b35a9 | 1276 | demand_empty_rest_of_line (); |
041ff4dd | 1277 | } |
041ff4dd | 1278 | } |
252b5132 RH |
1279 | |
1280 | quit: | |
04648e65 | 1281 | symbol_set_value_now (&dot_symbol); |
252b5132 | 1282 | |
fa94de6b RM |
1283 | #ifdef HANDLE_BUNDLE |
1284 | if (bundle_lock_frag != NULL) | |
1285 | { | |
1286 | as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line, | |
1287 | _(".bundle_lock with no matching .bundle_unlock")); | |
1288 | bundle_lock_frag = NULL; | |
1289 | bundle_lock_frchain = NULL; | |
d416e51d | 1290 | bundle_lock_depth = 0; |
fa94de6b RM |
1291 | } |
1292 | #endif | |
1293 | ||
252b5132 | 1294 | #ifdef md_cleanup |
041ff4dd | 1295 | md_cleanup (); |
252b5132 | 1296 | #endif |
041ff4dd NC |
1297 | /* Close the input file. */ |
1298 | input_scrub_close (); | |
4c400d5e AM |
1299 | #ifdef WARN_COMMENTS |
1300 | { | |
1301 | if (warn_comment && found_comment) | |
1302 | as_warn_where (found_comment_file, found_comment, | |
1303 | "first comment found here"); | |
1304 | } | |
1305 | #endif | |
252b5132 RH |
1306 | } |
1307 | ||
e5604d79 | 1308 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
956a6ba3 | 1309 | Take the sign of the number from SIGN rather than X_add_number. */ |
e5604d79 RS |
1310 | |
1311 | static void | |
956a6ba3 | 1312 | convert_to_bignum (expressionS *exp, int sign) |
e5604d79 RS |
1313 | { |
1314 | valueT value; | |
1315 | unsigned int i; | |
1316 | ||
1317 | value = exp->X_add_number; | |
1318 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1319 | { | |
1320 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1321 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1322 | } | |
1323 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1324 | the sign of the original value. */ | |
956a6ba3 JB |
1325 | if ((exp->X_add_number < 0) == !sign) |
1326 | generic_bignum[i++] = sign ? LITTLENUM_MASK : 0; | |
e5604d79 RS |
1327 | exp->X_op = O_big; |
1328 | exp->X_add_number = i; | |
1329 | } | |
1330 | ||
252b5132 RH |
1331 | /* For most MRI pseudo-ops, the line actually ends at the first |
1332 | nonquoted space. This function looks for that point, stuffs a null | |
1333 | in, and sets *STOPCP to the character that used to be there, and | |
1334 | returns the location. | |
1335 | ||
1336 | Until I hear otherwise, I am going to assume that this is only true | |
1337 | for the m68k MRI assembler. */ | |
1338 | ||
1339 | char * | |
39e6acbd | 1340 | mri_comment_field (char *stopcp) |
252b5132 | 1341 | { |
252b5132 | 1342 | char *s; |
041ff4dd | 1343 | #ifdef TC_M68K |
252b5132 RH |
1344 | int inquote = 0; |
1345 | ||
1346 | know (flag_m68k_mri); | |
1347 | ||
1348 | for (s = input_line_pointer; | |
041ff4dd | 1349 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1350 | || inquote); |
1351 | s++) | |
1352 | { | |
1353 | if (*s == '\'') | |
041ff4dd | 1354 | inquote = !inquote; |
252b5132 | 1355 | } |
252b5132 | 1356 | #else |
041ff4dd NC |
1357 | for (s = input_line_pointer; |
1358 | !is_end_of_line[(unsigned char) *s]; | |
1359 | s++) | |
252b5132 | 1360 | ; |
041ff4dd | 1361 | #endif |
252b5132 RH |
1362 | *stopcp = *s; |
1363 | *s = '\0'; | |
f0e652b4 | 1364 | |
252b5132 | 1365 | return s; |
252b5132 RH |
1366 | } |
1367 | ||
1368 | /* Skip to the end of an MRI comment field. */ | |
1369 | ||
1370 | void | |
39e6acbd | 1371 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1372 | { |
1373 | know (flag_mri); | |
1374 | ||
1375 | input_line_pointer = stop; | |
1376 | *stop = stopc; | |
041ff4dd | 1377 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1378 | ++input_line_pointer; |
1379 | } | |
1380 | ||
041ff4dd | 1381 | void |
39e6acbd | 1382 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1383 | { |
1384 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1385 | } | |
1386 | ||
1387 | /* Guts of .align directive. N is the power of two to which to align. | |
1388 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1389 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1390 | the maximum number of characters to skip when doing the alignment, | |
1391 | or 0 if there is no maximum. */ | |
1392 | ||
041ff4dd | 1393 | static void |
39e6acbd | 1394 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1395 | { |
ebeb9253 AM |
1396 | if (now_seg == absolute_section) |
1397 | { | |
1398 | if (fill != NULL) | |
1399 | while (len-- > 0) | |
1400 | if (*fill++ != '\0') | |
1401 | { | |
1402 | as_warn (_("ignoring fill value in absolute section")); | |
1403 | break; | |
1404 | } | |
1405 | fill = NULL; | |
1406 | len = 0; | |
1407 | } | |
1408 | ||
b8861cfb NS |
1409 | #ifdef md_flush_pending_output |
1410 | md_flush_pending_output (); | |
1411 | #endif | |
252b5132 RH |
1412 | #ifdef md_do_align |
1413 | md_do_align (n, fill, len, max, just_record_alignment); | |
1414 | #endif | |
1415 | ||
041ff4dd | 1416 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1417 | if (n != 0 && !need_pass_2) |
1418 | { | |
0a9ef439 RH |
1419 | if (fill == NULL) |
1420 | { | |
1421 | if (subseg_text_p (now_seg)) | |
1422 | frag_align_code (n, max); | |
1423 | else | |
1424 | frag_align (n, 0, max); | |
1425 | } | |
1426 | else if (len <= 1) | |
252b5132 RH |
1427 | frag_align (n, *fill, max); |
1428 | else | |
1429 | frag_align_pattern (n, fill, len, max); | |
1430 | } | |
1431 | ||
1432 | #ifdef md_do_align | |
a6bd2a4f | 1433 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1434 | #endif |
1435 | ||
bea9907b | 1436 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1437 | } |
1438 | ||
1439 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1440 | (in bytes). A negative ARG is the negative of the length of the | |
1441 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1442 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1443 | #ifndef TC_ALIGN_LIMIT |
1444 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1445 | #endif | |
9ebd302d | 1446 | |
252b5132 | 1447 | static void |
39e6acbd | 1448 | s_align (int arg, int bytes_p) |
252b5132 | 1449 | { |
11ec4ba9 | 1450 | unsigned int align_limit = TC_ALIGN_LIMIT; |
9ebd302d | 1451 | unsigned int align; |
252b5132 | 1452 | char *stop = NULL; |
fb25138b | 1453 | char stopc = 0; |
252b5132 RH |
1454 | offsetT fill = 0; |
1455 | int max; | |
1456 | int fill_p; | |
1457 | ||
1458 | if (flag_mri) | |
1459 | stop = mri_comment_field (&stopc); | |
1460 | ||
1461 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1462 | { | |
1463 | if (arg < 0) | |
1464 | align = 0; | |
1465 | else | |
041ff4dd | 1466 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1467 | } |
1468 | else | |
1469 | { | |
1470 | align = get_absolute_expression (); | |
1471 | SKIP_WHITESPACE (); | |
1472 | } | |
1473 | ||
1474 | if (bytes_p) | |
1475 | { | |
1476 | /* Convert to a power of 2. */ | |
1477 | if (align != 0) | |
1478 | { | |
1479 | unsigned int i; | |
1480 | ||
1481 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1482 | ; | |
1483 | if (align != 1) | |
0e389e77 | 1484 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1485 | |
252b5132 RH |
1486 | align = i; |
1487 | } | |
1488 | } | |
1489 | ||
b617dc20 | 1490 | if (align > align_limit) |
252b5132 | 1491 | { |
b617dc20 | 1492 | align = align_limit; |
0e389e77 | 1493 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1494 | } |
1495 | ||
1496 | if (*input_line_pointer != ',') | |
1497 | { | |
1498 | fill_p = 0; | |
1499 | max = 0; | |
1500 | } | |
1501 | else | |
1502 | { | |
1503 | ++input_line_pointer; | |
1504 | if (*input_line_pointer == ',') | |
1505 | fill_p = 0; | |
1506 | else | |
1507 | { | |
1508 | fill = get_absolute_expression (); | |
1509 | SKIP_WHITESPACE (); | |
1510 | fill_p = 1; | |
1511 | } | |
1512 | ||
1513 | if (*input_line_pointer != ',') | |
1514 | max = 0; | |
1515 | else | |
1516 | { | |
1517 | ++input_line_pointer; | |
1518 | max = get_absolute_expression (); | |
1519 | } | |
1520 | } | |
1521 | ||
041ff4dd | 1522 | if (!fill_p) |
252b5132 RH |
1523 | { |
1524 | if (arg < 0) | |
1525 | as_warn (_("expected fill pattern missing")); | |
1526 | do_align (align, (char *) NULL, 0, max); | |
1527 | } | |
1528 | else | |
1529 | { | |
1530 | int fill_len; | |
1531 | ||
1532 | if (arg >= 0) | |
1533 | fill_len = 1; | |
1534 | else | |
041ff4dd | 1535 | fill_len = -arg; |
252b5132 RH |
1536 | if (fill_len <= 1) |
1537 | { | |
1538 | char fill_char; | |
1539 | ||
1540 | fill_char = fill; | |
1541 | do_align (align, &fill_char, fill_len, max); | |
1542 | } | |
1543 | else | |
1544 | { | |
1545 | char ab[16]; | |
1546 | ||
1547 | if ((size_t) fill_len > sizeof ab) | |
1548 | abort (); | |
1549 | md_number_to_chars (ab, fill, fill_len); | |
1550 | do_align (align, ab, fill_len, max); | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | demand_empty_rest_of_line (); | |
1555 | ||
1556 | if (flag_mri) | |
1557 | mri_comment_end (stop, stopc); | |
1558 | } | |
1559 | ||
1560 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1561 | align to a 4 byte boundary. */ | |
1562 | ||
041ff4dd | 1563 | void |
39e6acbd | 1564 | s_align_bytes (int arg) |
252b5132 RH |
1565 | { |
1566 | s_align (arg, 1); | |
1567 | } | |
1568 | ||
1569 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1570 | to a 2**4 boundary. */ | |
1571 | ||
041ff4dd | 1572 | void |
39e6acbd | 1573 | s_align_ptwo (int arg) |
252b5132 RH |
1574 | { |
1575 | s_align (arg, 0); | |
1576 | } | |
1577 | ||
caa32fe5 NC |
1578 | /* Switch in and out of alternate macro mode. */ |
1579 | ||
1580 | void | |
1581 | s_altmacro (int on) | |
1582 | { | |
1583 | demand_empty_rest_of_line (); | |
1584 | macro_set_alternate (on); | |
1585 | } | |
1586 | ||
7bfd842d NC |
1587 | /* Read a symbol name from input_line_pointer. |
1588 | ||
1589 | Stores the symbol name in a buffer and returns a pointer to this buffer. | |
1590 | The buffer is xalloc'ed. It is the caller's responsibility to free | |
1591 | this buffer. | |
1592 | ||
1593 | The name is not left in the i_l_p buffer as it may need processing | |
1594 | to handle escape characters. | |
1595 | ||
1596 | Advances i_l_p to the next non-whitespace character. | |
1597 | ||
1598 | If a symbol name could not be read, the routine issues an error | |
1599 | messages, skips to the end of the line and returns NULL. */ | |
1600 | ||
1601 | static char * | |
1602 | read_symbol_name (void) | |
1603 | { | |
1604 | char * name; | |
1605 | char * start; | |
1606 | char c; | |
1607 | ||
1608 | c = *input_line_pointer++; | |
1609 | ||
1610 | if (c == '"') | |
1611 | { | |
1612 | #define SYM_NAME_CHUNK_LEN 128 | |
1613 | ptrdiff_t len = SYM_NAME_CHUNK_LEN; | |
1614 | char * name_end; | |
1615 | unsigned int C; | |
1616 | ||
1617 | start = name = xmalloc (len + 1); | |
1618 | ||
1619 | name_end = name + SYM_NAME_CHUNK_LEN; | |
1620 | ||
1621 | while (is_a_char (C = next_char_of_string ())) | |
1622 | { | |
1623 | if (name >= name_end) | |
1624 | { | |
1625 | ptrdiff_t sofar; | |
1626 | ||
1627 | sofar = name - start; | |
1628 | len += SYM_NAME_CHUNK_LEN; | |
1629 | start = xrealloc (start, len + 1); | |
1630 | name_end = start + len; | |
1631 | name = start + sofar; | |
1632 | } | |
34bca508 | 1633 | |
7bfd842d NC |
1634 | *name++ = (char) C; |
1635 | } | |
1636 | *name = 0; | |
1637 | ||
1638 | /* Since quoted symbol names can contain non-ASCII characters, | |
1639 | check the string and warn if it cannot be recognised by the | |
1640 | current character set. */ | |
1641 | if (mbstowcs (NULL, name, len) == (size_t) -1) | |
1642 | as_warn (_("symbol name not recognised in the current locale")); | |
1643 | } | |
1644 | else if (is_name_beginner (c) || c == '\001') | |
1645 | { | |
1646 | ptrdiff_t len; | |
1647 | ||
1648 | name = input_line_pointer - 1; | |
1649 | ||
1650 | /* We accept \001 in a name in case this is | |
1651 | being called with a constructed string. */ | |
1652 | while (is_part_of_name (c = *input_line_pointer++) | |
1653 | || c == '\001') | |
1654 | ; | |
1655 | ||
1656 | len = (input_line_pointer - name) - 1; | |
1657 | start = xmalloc (len + 1); | |
1658 | ||
1659 | memcpy (start, name, len); | |
1660 | start[len] = 0; | |
1661 | ||
1662 | /* Skip a name ender char if one is present. */ | |
1663 | if (! is_name_ender (c)) | |
1664 | --input_line_pointer; | |
1665 | } | |
1666 | else | |
1667 | name = start = NULL; | |
1668 | ||
1669 | if (name == start) | |
1670 | { | |
1671 | as_bad (_("expected symbol name")); | |
1672 | ignore_rest_of_line (); | |
1673 | return NULL; | |
1674 | } | |
34bca508 | 1675 | |
7bfd842d NC |
1676 | SKIP_WHITESPACE (); |
1677 | ||
1678 | return start; | |
1679 | } | |
1680 | ||
1681 | ||
e13bab5a AM |
1682 | symbolS * |
1683 | s_comm_internal (int param, | |
1684 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1685 | { |
e13bab5a | 1686 | char *name; |
e13bab5a AM |
1687 | offsetT temp, size; |
1688 | symbolS *symbolP = NULL; | |
252b5132 | 1689 | char *stop = NULL; |
fb25138b | 1690 | char stopc = 0; |
e13bab5a | 1691 | expressionS exp; |
252b5132 RH |
1692 | |
1693 | if (flag_mri) | |
1694 | stop = mri_comment_field (&stopc); | |
1695 | ||
7bfd842d NC |
1696 | if ((name = read_symbol_name ()) == NULL) |
1697 | goto out; | |
f0e652b4 | 1698 | |
e13bab5a AM |
1699 | /* Accept an optional comma after the name. The comma used to be |
1700 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1701 | if (*input_line_pointer == ',') | |
1702 | input_line_pointer++; | |
1703 | ||
e13bab5a AM |
1704 | temp = get_absolute_expr (&exp); |
1705 | size = temp; | |
e13bab5a | 1706 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1707 | if (exp.X_op == O_absent) |
252b5132 | 1708 | { |
e13bab5a | 1709 | as_bad (_("missing size expression")); |
252b5132 | 1710 | ignore_rest_of_line (); |
e13bab5a | 1711 | goto out; |
252b5132 | 1712 | } |
e13bab5a | 1713 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1714 | { |
e13bab5a | 1715 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1716 | ignore_rest_of_line (); |
e13bab5a | 1717 | goto out; |
252b5132 | 1718 | } |
f0e652b4 | 1719 | |
252b5132 | 1720 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1721 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1722 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1723 | { |
92757bc9 JB |
1724 | if (!S_IS_VOLATILE (symbolP)) |
1725 | { | |
1726 | symbolP = NULL; | |
1727 | as_bad (_("symbol `%s' is already defined"), name); | |
92757bc9 JB |
1728 | ignore_rest_of_line (); |
1729 | goto out; | |
1730 | } | |
89cdfe57 | 1731 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1732 | S_SET_SEGMENT (symbolP, undefined_section); |
1733 | S_SET_VALUE (symbolP, 0); | |
1734 | symbol_set_frag (symbolP, &zero_address_frag); | |
1735 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1736 | } |
f0e652b4 | 1737 | |
e13bab5a AM |
1738 | size = S_GET_VALUE (symbolP); |
1739 | if (size == 0) | |
1740 | size = temp; | |
1741 | else if (size != temp) | |
1742 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1743 | name, (long) size, (long) temp); | |
1744 | ||
e13bab5a AM |
1745 | if (comm_parse_extra != NULL) |
1746 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1747 | else |
1748 | { | |
e13bab5a | 1749 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1750 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1751 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
e13bab5a | 1752 | } |
252b5132 RH |
1753 | |
1754 | demand_empty_rest_of_line (); | |
e13bab5a | 1755 | out: |
252b5132 RH |
1756 | if (flag_mri) |
1757 | mri_comment_end (stop, stopc); | |
7bfd842d NC |
1758 | if (name != NULL) |
1759 | free (name); | |
e13bab5a AM |
1760 | return symbolP; |
1761 | } | |
1762 | ||
1763 | void | |
1764 | s_comm (int ignore) | |
1765 | { | |
1766 | s_comm_internal (ignore, NULL); | |
1767 | } | |
252b5132 RH |
1768 | |
1769 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1770 | symbol with the appropriate name. We make s_space do the right | |
1771 | thing by increasing the size. */ | |
1772 | ||
1773 | void | |
39e6acbd | 1774 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1775 | { |
1776 | char *name; | |
1777 | char c; | |
1778 | char *alc = NULL; | |
1779 | symbolS *sym; | |
1780 | offsetT align; | |
1781 | char *stop = NULL; | |
fb25138b | 1782 | char stopc = 0; |
252b5132 | 1783 | |
041ff4dd | 1784 | if (!flag_mri) |
252b5132 RH |
1785 | { |
1786 | s_comm (0); | |
1787 | return; | |
1788 | } | |
1789 | ||
1790 | stop = mri_comment_field (&stopc); | |
1791 | ||
1792 | SKIP_WHITESPACE (); | |
1793 | ||
1794 | name = input_line_pointer; | |
3882b010 | 1795 | if (!ISDIGIT (*name)) |
252b5132 RH |
1796 | c = get_symbol_end (); |
1797 | else | |
1798 | { | |
1799 | do | |
1800 | { | |
1801 | ++input_line_pointer; | |
1802 | } | |
3882b010 | 1803 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1804 | |
252b5132 RH |
1805 | c = *input_line_pointer; |
1806 | *input_line_pointer = '\0'; | |
1807 | ||
1808 | if (line_label != NULL) | |
1809 | { | |
1810 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1811 | + (input_line_pointer - name) | |
1812 | + 1); | |
1813 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1814 | name = alc; | |
1815 | } | |
1816 | } | |
1817 | ||
1818 | sym = symbol_find_or_make (name); | |
1819 | *input_line_pointer = c; | |
1820 | if (alc != NULL) | |
1821 | free (alc); | |
1822 | ||
1823 | if (*input_line_pointer != ',') | |
1824 | align = 0; | |
1825 | else | |
1826 | { | |
1827 | ++input_line_pointer; | |
1828 | align = get_absolute_expression (); | |
1829 | } | |
1830 | ||
041ff4dd | 1831 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1832 | { |
0e389e77 | 1833 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1834 | ignore_rest_of_line (); |
1835 | mri_comment_end (stop, stopc); | |
1836 | return; | |
1837 | } | |
1838 | ||
1839 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1840 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1841 | mri_common_symbol = sym; |
1842 | ||
1843 | #ifdef S_SET_ALIGN | |
1844 | if (align != 0) | |
1845 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1846 | #else |
1847 | (void) align; | |
252b5132 RH |
1848 | #endif |
1849 | ||
1850 | if (line_label != NULL) | |
1851 | { | |
2b47531b ILT |
1852 | expressionS exp; |
1853 | exp.X_op = O_symbol; | |
1854 | exp.X_add_symbol = sym; | |
1855 | exp.X_add_number = 0; | |
1856 | symbol_set_value_expression (line_label, &exp); | |
1857 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1858 | S_SET_SEGMENT (line_label, expr_section); |
1859 | } | |
1860 | ||
1861 | /* FIXME: We just ignore the small argument, which distinguishes | |
1862 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1863 | ||
1864 | /* Ignore the type and hptype. */ | |
1865 | if (*input_line_pointer == ',') | |
1866 | input_line_pointer += 2; | |
1867 | if (*input_line_pointer == ',') | |
1868 | input_line_pointer += 2; | |
1869 | ||
1870 | demand_empty_rest_of_line (); | |
1871 | ||
1872 | mri_comment_end (stop, stopc); | |
1873 | } | |
1874 | ||
1875 | void | |
39e6acbd | 1876 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1877 | { |
1878 | segT section; | |
3d540e93 | 1879 | int temp; |
252b5132 RH |
1880 | |
1881 | temp = get_absolute_expression (); | |
1882 | if (flag_readonly_data_in_text) | |
1883 | { | |
1884 | section = text_section; | |
1885 | temp += 1000; | |
1886 | } | |
1887 | else | |
1888 | section = data_section; | |
1889 | ||
1890 | subseg_set (section, (subsegT) temp); | |
1891 | ||
252b5132 RH |
1892 | demand_empty_rest_of_line (); |
1893 | } | |
1894 | ||
1895 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1896 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1897 | file name. This default definition may be overridden by the object | |
1898 | or CPU specific pseudo-ops. This function is also the default | |
1899 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1900 | .file. */ | |
1901 | ||
ecb4347a | 1902 | void |
f17c130b | 1903 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1904 | { |
1905 | #ifdef LISTING | |
1906 | if (listing) | |
1907 | listing_source_file (file); | |
1908 | #endif | |
1909 | register_dependency (file); | |
1910 | #ifdef obj_app_file | |
c04f5787 | 1911 | obj_app_file (file, appfile); |
ecb4347a DJ |
1912 | #endif |
1913 | } | |
1914 | ||
041ff4dd | 1915 | void |
39e6acbd | 1916 | s_app_file (int appfile) |
252b5132 | 1917 | { |
3d540e93 | 1918 | char *s; |
252b5132 RH |
1919 | int length; |
1920 | ||
041ff4dd | 1921 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1922 | if ((s = demand_copy_string (&length)) != 0) |
1923 | { | |
252b5132 | 1924 | int may_omit |
93e914b2 | 1925 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
1926 | |
1927 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1928 | backquote. */ |
252b5132 RH |
1929 | if (flag_m68k_mri |
1930 | && *input_line_pointer == '\'' | |
1931 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1932 | ++input_line_pointer; | |
1933 | ||
1934 | demand_empty_rest_of_line (); | |
041ff4dd | 1935 | if (!may_omit) |
c04f5787 | 1936 | s_app_file_string (s, appfile); |
252b5132 RH |
1937 | } |
1938 | } | |
1939 | ||
e9fc6c21 AO |
1940 | static int |
1941 | get_linefile_number (int *flag) | |
1942 | { | |
1943 | SKIP_WHITESPACE (); | |
1944 | ||
1945 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
1946 | return 0; | |
1947 | ||
1948 | *flag = get_absolute_expression (); | |
1949 | ||
1950 | return 1; | |
1951 | } | |
1952 | ||
252b5132 RH |
1953 | /* Handle the .appline pseudo-op. This is automatically generated by |
1954 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1955 | default definition may be overridden by the object or CPU specific | |
1956 | pseudo-ops. */ | |
1957 | ||
1958 | void | |
93e914b2 | 1959 | s_app_line (int appline) |
252b5132 | 1960 | { |
e9fc6c21 | 1961 | char *file = NULL; |
252b5132 RH |
1962 | int l; |
1963 | ||
1964 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
1965 | if (appline) |
1966 | l = get_absolute_expression (); | |
1967 | else if (!get_linefile_number (&l)) | |
1968 | { | |
1969 | ignore_rest_of_line (); | |
1970 | return; | |
1971 | } | |
1972 | ||
1973 | l--; | |
47837f8e NC |
1974 | |
1975 | if (l < -1) | |
252b5132 | 1976 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
1977 | Besides, it's silly. GCC however will generate a line number of |
1978 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
1979 | ||
fa94de6b | 1980 | # 0 "<built-in>" |
47837f8e NC |
1981 | |
1982 | We do not want to barf on this, especially since such files are used | |
1983 | in the GCC and GDB testsuites. So we check for negative line numbers | |
1984 | rather than non-positive line numbers. */ | |
0e389e77 | 1985 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1986 | l + 1); |
252b5132 RH |
1987 | else |
1988 | { | |
93e914b2 | 1989 | int flags = 0; |
93e914b2 AO |
1990 | int length = 0; |
1991 | ||
1992 | if (!appline) | |
1993 | { | |
e9fc6c21 AO |
1994 | SKIP_WHITESPACE (); |
1995 | ||
1996 | if (*input_line_pointer == '"') | |
1997 | file = demand_copy_string (&length); | |
93e914b2 AO |
1998 | |
1999 | if (file) | |
2000 | { | |
2001 | int this_flag; | |
2002 | ||
e9fc6c21 | 2003 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
2004 | switch (this_flag) |
2005 | { | |
2006 | /* From GCC's cpp documentation: | |
2007 | 1: start of a new file. | |
2008 | 2: returning to a file after having included | |
fa94de6b | 2009 | another file. |
93e914b2 AO |
2010 | 3: following text comes from a system header file. |
2011 | 4: following text should be treated as extern "C". | |
2012 | ||
2013 | 4 is nonsensical for the assembler; 3, we don't | |
2014 | care about, so we ignore it just in case a | |
2015 | system header file is included while | |
2016 | preprocessing assembly. So 1 and 2 are all we | |
2017 | care about, and they are mutually incompatible. | |
2018 | new_logical_line_flags() demands this. */ | |
2019 | case 1: | |
2020 | case 2: | |
2021 | if (flags && flags != (1 << this_flag)) | |
2022 | as_warn (_("incompatible flag %i in line directive"), | |
2023 | this_flag); | |
2024 | else | |
2025 | flags |= 1 << this_flag; | |
2026 | break; | |
2027 | ||
2028 | case 3: | |
2029 | case 4: | |
2030 | /* We ignore these. */ | |
2031 | break; | |
2032 | ||
2033 | default: | |
2034 | as_warn (_("unsupported flag %i in line directive"), | |
2035 | this_flag); | |
2036 | break; | |
2037 | } | |
e9fc6c21 AO |
2038 | |
2039 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
2040 | file = 0; | |
93e914b2 AO |
2041 | } |
2042 | } | |
2043 | ||
e9fc6c21 AO |
2044 | if (appline || file) |
2045 | { | |
2046 | new_logical_line_flags (file, l, flags); | |
252b5132 | 2047 | #ifdef LISTING |
e9fc6c21 AO |
2048 | if (listing) |
2049 | listing_source_line (l); | |
252b5132 | 2050 | #endif |
e9fc6c21 | 2051 | } |
252b5132 | 2052 | } |
e9fc6c21 AO |
2053 | if (appline || file) |
2054 | demand_empty_rest_of_line (); | |
2055 | else | |
2056 | ignore_rest_of_line (); | |
252b5132 RH |
2057 | } |
2058 | ||
2059 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
2060 | read_a_source_file. */ | |
2061 | ||
2062 | void | |
39e6acbd | 2063 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2064 | { |
2065 | if (flag_mri) | |
2066 | { | |
2067 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 2068 | but we don't support that. */ |
252b5132 | 2069 | SKIP_WHITESPACE (); |
041ff4dd | 2070 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2071 | && *input_line_pointer != '*' |
2072 | && *input_line_pointer != '!') | |
2073 | as_warn (_("start address not supported")); | |
2074 | } | |
2075 | } | |
2076 | ||
2077 | /* Handle the .err pseudo-op. */ | |
2078 | ||
2079 | void | |
39e6acbd | 2080 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2081 | { |
2082 | as_bad (_(".err encountered")); | |
2083 | demand_empty_rest_of_line (); | |
d190d046 HPN |
2084 | } |
2085 | ||
2086 | /* Handle the .error and .warning pseudo-ops. */ | |
2087 | ||
2088 | void | |
2089 | s_errwarn (int err) | |
2090 | { | |
2091 | int len; | |
2092 | /* The purpose for the conditional assignment is not to | |
2093 | internationalize the directive itself, but that we need a | |
2094 | self-contained message, one that can be passed like the | |
2095 | demand_copy_C_string return value, and with no assumption on the | |
2096 | location of the name of the directive within the message. */ | |
2097 | char *msg | |
2098 | = (err ? _(".error directive invoked in source file") | |
2099 | : _(".warning directive invoked in source file")); | |
2100 | ||
2101 | if (!is_it_end_of_statement ()) | |
2102 | { | |
2103 | if (*input_line_pointer != '\"') | |
2104 | { | |
2105 | as_bad (_("%s argument must be a string"), | |
2106 | err ? ".error" : ".warning"); | |
40a4d956 | 2107 | ignore_rest_of_line (); |
d190d046 HPN |
2108 | return; |
2109 | } | |
2110 | ||
2111 | msg = demand_copy_C_string (&len); | |
2112 | if (msg == NULL) | |
2113 | return; | |
2114 | } | |
2115 | ||
2116 | if (err) | |
2117 | as_bad ("%s", msg); | |
2118 | else | |
2119 | as_warn ("%s", msg); | |
2120 | demand_empty_rest_of_line (); | |
252b5132 RH |
2121 | } |
2122 | ||
2123 | /* Handle the MRI fail pseudo-op. */ | |
2124 | ||
2125 | void | |
39e6acbd | 2126 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2127 | { |
2128 | offsetT temp; | |
2129 | char *stop = NULL; | |
fb25138b | 2130 | char stopc = 0; |
252b5132 RH |
2131 | |
2132 | if (flag_mri) | |
2133 | stop = mri_comment_field (&stopc); | |
2134 | ||
2135 | temp = get_absolute_expression (); | |
2136 | if (temp >= 500) | |
2137 | as_warn (_(".fail %ld encountered"), (long) temp); | |
2138 | else | |
2139 | as_bad (_(".fail %ld encountered"), (long) temp); | |
2140 | ||
2141 | demand_empty_rest_of_line (); | |
2142 | ||
2143 | if (flag_mri) | |
2144 | mri_comment_end (stop, stopc); | |
2145 | } | |
2146 | ||
041ff4dd | 2147 | void |
39e6acbd | 2148 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2149 | { |
2150 | expressionS rep_exp; | |
2151 | long size = 1; | |
3d540e93 | 2152 | long fill = 0; |
252b5132 RH |
2153 | char *p; |
2154 | ||
2155 | #ifdef md_flush_pending_output | |
2156 | md_flush_pending_output (); | |
2157 | #endif | |
2158 | ||
cc3f603a JM |
2159 | #ifdef md_cons_align |
2160 | md_cons_align (1); | |
2161 | #endif | |
2162 | ||
252b5132 RH |
2163 | get_known_segmented_expression (&rep_exp); |
2164 | if (*input_line_pointer == ',') | |
2165 | { | |
2166 | input_line_pointer++; | |
2167 | size = get_absolute_expression (); | |
2168 | if (*input_line_pointer == ',') | |
2169 | { | |
2170 | input_line_pointer++; | |
2171 | fill = get_absolute_expression (); | |
2172 | } | |
2173 | } | |
2174 | ||
2175 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
2176 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
2177 | if (size > BSD_FILL_SIZE_CROCK_8) | |
2178 | { | |
0e389e77 | 2179 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
2180 | size = BSD_FILL_SIZE_CROCK_8; |
2181 | } | |
2182 | if (size < 0) | |
2183 | { | |
0e389e77 | 2184 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
2185 | size = 0; |
2186 | } | |
2187 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
2188 | { | |
2189 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 2190 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
2191 | size = 0; |
2192 | } | |
2193 | ||
2194 | if (size && !need_pass_2) | |
2195 | { | |
2196 | if (rep_exp.X_op == O_constant) | |
2197 | { | |
2198 | p = frag_var (rs_fill, (int) size, (int) size, | |
2199 | (relax_substateT) 0, (symbolS *) 0, | |
2200 | (offsetT) rep_exp.X_add_number, | |
2201 | (char *) 0); | |
2202 | } | |
2203 | else | |
2204 | { | |
2205 | /* We don't have a constant repeat count, so we can't use | |
2206 | rs_fill. We can get the same results out of rs_space, | |
2207 | but its argument is in bytes, so we must multiply the | |
2208 | repeat count by size. */ | |
2209 | ||
2210 | symbolS *rep_sym; | |
2211 | rep_sym = make_expr_symbol (&rep_exp); | |
2212 | if (size != 1) | |
2213 | { | |
2214 | expressionS size_exp; | |
2215 | size_exp.X_op = O_constant; | |
2216 | size_exp.X_add_number = size; | |
2217 | ||
2218 | rep_exp.X_op = O_multiply; | |
2219 | rep_exp.X_add_symbol = rep_sym; | |
2220 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
2221 | rep_exp.X_add_number = 0; | |
2222 | rep_sym = make_expr_symbol (&rep_exp); | |
2223 | } | |
2224 | ||
2225 | p = frag_var (rs_space, (int) size, (int) size, | |
2226 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
2227 | } | |
f0e652b4 | 2228 | |
252b5132 | 2229 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2230 | |
252b5132 | 2231 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2232 | flavoured AS. The following bizarre behaviour is to be |
2233 | compatible with above. I guess they tried to take up to 8 | |
2234 | bytes from a 4-byte expression and they forgot to sign | |
2235 | extend. */ | |
252b5132 RH |
2236 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2237 | md_number_to_chars (p, (valueT) fill, | |
2238 | (size > BSD_FILL_SIZE_CROCK_4 | |
2239 | ? BSD_FILL_SIZE_CROCK_4 | |
2240 | : (int) size)); | |
2241 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2242 | but emits no error message because it seems a legal thing to do. |
2243 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2244 | compiler. */ |
252b5132 RH |
2245 | } |
2246 | demand_empty_rest_of_line (); | |
2247 | } | |
2248 | ||
041ff4dd | 2249 | void |
39e6acbd | 2250 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2251 | { |
2252 | char *name; | |
2253 | int c; | |
2254 | symbolS *symbolP; | |
2255 | char *stop = NULL; | |
fb25138b | 2256 | char stopc = 0; |
252b5132 RH |
2257 | |
2258 | if (flag_mri) | |
2259 | stop = mri_comment_field (&stopc); | |
2260 | ||
2261 | do | |
2262 | { | |
7bfd842d NC |
2263 | if ((name = read_symbol_name ()) == NULL) |
2264 | return; | |
2265 | ||
252b5132 | 2266 | symbolP = symbol_find_or_make (name); |
58b5739a RH |
2267 | S_SET_EXTERNAL (symbolP); |
2268 | ||
252b5132 | 2269 | SKIP_WHITESPACE (); |
58b5739a | 2270 | c = *input_line_pointer; |
252b5132 RH |
2271 | if (c == ',') |
2272 | { | |
2273 | input_line_pointer++; | |
2274 | SKIP_WHITESPACE (); | |
0e389e77 | 2275 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2276 | c = '\n'; |
2277 | } | |
7bfd842d NC |
2278 | |
2279 | free (name); | |
252b5132 RH |
2280 | } |
2281 | while (c == ','); | |
2282 | ||
2283 | demand_empty_rest_of_line (); | |
2284 | ||
2285 | if (flag_mri) | |
2286 | mri_comment_end (stop, stopc); | |
2287 | } | |
2288 | ||
2289 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2290 | ||
2291 | void | |
39e6acbd | 2292 | s_irp (int irpc) |
252b5132 | 2293 | { |
40a4d956 | 2294 | char *file, *eol; |
252b5132 RH |
2295 | unsigned int line; |
2296 | sb s; | |
2297 | const char *err; | |
2298 | sb out; | |
2299 | ||
2300 | as_where (&file, &line); | |
2301 | ||
40a4d956 | 2302 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2303 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2304 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2305 | input_line_pointer = eol; | |
252b5132 RH |
2306 | |
2307 | sb_new (&out); | |
2308 | ||
7592cfd7 | 2309 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2310 | if (err != NULL) |
2311 | as_bad_where (file, line, "%s", err); | |
2312 | ||
2313 | sb_kill (&s); | |
2314 | ||
9f10757c | 2315 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2316 | sb_kill (&out); |
2317 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2318 | } | |
2319 | ||
2320 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2321 | the section to only be linked once. However, this is not supported | |
2322 | by most object file formats. This takes an optional argument, | |
2323 | which is what to do about duplicates. */ | |
2324 | ||
2325 | void | |
39e6acbd | 2326 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2327 | { |
2328 | enum linkonce_type type; | |
2329 | ||
2330 | SKIP_WHITESPACE (); | |
2331 | ||
2332 | type = LINKONCE_DISCARD; | |
2333 | ||
041ff4dd | 2334 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2335 | { |
2336 | char *s; | |
2337 | char c; | |
2338 | ||
2339 | s = input_line_pointer; | |
2340 | c = get_symbol_end (); | |
2341 | if (strcasecmp (s, "discard") == 0) | |
2342 | type = LINKONCE_DISCARD; | |
2343 | else if (strcasecmp (s, "one_only") == 0) | |
2344 | type = LINKONCE_ONE_ONLY; | |
2345 | else if (strcasecmp (s, "same_size") == 0) | |
2346 | type = LINKONCE_SAME_SIZE; | |
2347 | else if (strcasecmp (s, "same_contents") == 0) | |
2348 | type = LINKONCE_SAME_CONTENTS; | |
2349 | else | |
2350 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2351 | ||
2352 | *input_line_pointer = c; | |
2353 | } | |
2354 | ||
2355 | #ifdef obj_handle_link_once | |
2356 | obj_handle_link_once (type); | |
2357 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2358 | { |
2359 | flagword flags; | |
2360 | ||
2361 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2362 | as_warn (_(".linkonce is not supported for this object file format")); | |
2363 | ||
2364 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2365 | flags |= SEC_LINK_ONCE; | |
2366 | switch (type) | |
2367 | { | |
2368 | default: | |
2369 | abort (); | |
2370 | case LINKONCE_DISCARD: | |
2371 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2372 | break; | |
2373 | case LINKONCE_ONE_ONLY: | |
2374 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2375 | break; | |
2376 | case LINKONCE_SAME_SIZE: | |
2377 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2378 | break; | |
2379 | case LINKONCE_SAME_CONTENTS: | |
2380 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2381 | break; | |
2382 | } | |
041ff4dd | 2383 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2384 | as_bad (_("bfd_set_section_flags: %s"), |
2385 | bfd_errmsg (bfd_get_error ())); | |
2386 | } | |
252b5132 RH |
2387 | #endif /* ! defined (obj_handle_link_once) */ |
2388 | ||
2389 | demand_empty_rest_of_line (); | |
2390 | } | |
2391 | ||
e13bab5a AM |
2392 | void |
2393 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2394 | { |
e13bab5a | 2395 | char *pfrag; |
252b5132 RH |
2396 | segT current_seg = now_seg; |
2397 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2398 | segT bss_seg = bss_section; |
2399 | ||
252b5132 RH |
2400 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2401 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2402 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2403 | { | |
2404 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2405 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2406 | { |
2407 | bss_seg = subseg_new (".sbss", 1); | |
2408 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2409 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2410 | as_warn (_("error setting flags for \".sbss\": %s"), |
2411 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2412 | } |
2413 | } | |
2414 | #endif | |
e13bab5a | 2415 | subseg_set (bss_seg, 1); |
8684e216 | 2416 | |
e13bab5a | 2417 | if (align) |
041ff4dd | 2418 | { |
e13bab5a AM |
2419 | record_alignment (bss_seg, align); |
2420 | frag_align (align, 0, 0); | |
041ff4dd | 2421 | } |
252b5132 | 2422 | |
e13bab5a AM |
2423 | /* Detach from old frag. */ |
2424 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2425 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2426 | |
e13bab5a AM |
2427 | symbol_set_frag (symbolP, frag_now); |
2428 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2429 | *pfrag = 0; | |
f0e652b4 | 2430 | |
e13bab5a AM |
2431 | #ifdef S_SET_SIZE |
2432 | S_SET_SIZE (symbolP, size); | |
2433 | #endif | |
2434 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2435 | |
e13bab5a AM |
2436 | #ifdef OBJ_COFF |
2437 | /* The symbol may already have been created with a preceding | |
2438 | ".globl" directive -- be careful not to step on storage class | |
2439 | in that case. Otherwise, set it to static. */ | |
2440 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2441 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2442 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2443 | |
e13bab5a AM |
2444 | subseg_set (current_seg, current_subseg); |
2445 | } | |
f0e652b4 | 2446 | |
e13bab5a AM |
2447 | offsetT |
2448 | parse_align (int align_bytes) | |
2449 | { | |
2450 | expressionS exp; | |
2451 | addressT align; | |
252b5132 | 2452 | |
e13bab5a AM |
2453 | SKIP_WHITESPACE (); |
2454 | if (*input_line_pointer != ',') | |
2455 | { | |
2456 | no_align: | |
2457 | as_bad (_("expected alignment after size")); | |
2458 | ignore_rest_of_line (); | |
2459 | return -1; | |
2460 | } | |
f0e652b4 | 2461 | |
e13bab5a AM |
2462 | input_line_pointer++; |
2463 | SKIP_WHITESPACE (); | |
f0e652b4 | 2464 | |
e13bab5a AM |
2465 | align = get_absolute_expr (&exp); |
2466 | if (exp.X_op == O_absent) | |
2467 | goto no_align; | |
2468 | ||
2469 | if (!exp.X_unsigned) | |
2470 | { | |
2471 | as_warn (_("alignment negative; 0 assumed")); | |
2472 | align = 0; | |
041ff4dd | 2473 | } |
e13bab5a AM |
2474 | |
2475 | if (align_bytes && align != 0) | |
252b5132 | 2476 | { |
e13bab5a AM |
2477 | /* convert to a power of 2 alignment */ |
2478 | unsigned int alignp2 = 0; | |
2479 | while ((align & 1) == 0) | |
2480 | align >>= 1, ++alignp2; | |
2481 | if (align != 1) | |
252b5132 | 2482 | { |
e13bab5a AM |
2483 | as_bad (_("alignment not a power of 2")); |
2484 | ignore_rest_of_line (); | |
2485 | return -1; | |
252b5132 | 2486 | } |
e13bab5a | 2487 | align = alignp2; |
252b5132 | 2488 | } |
e13bab5a AM |
2489 | return align; |
2490 | } | |
252b5132 | 2491 | |
e13bab5a AM |
2492 | /* Called from s_comm_internal after symbol name and size have been |
2493 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2494 | 1 if this was a ".bss" directive which has a 3rd argument | |
2495 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2496 | with alignment in bytes. */ | |
252b5132 | 2497 | |
13c56984 | 2498 | symbolS * |
e13bab5a AM |
2499 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2500 | { | |
2501 | addressT align = 0; | |
252b5132 | 2502 | |
e13bab5a AM |
2503 | if (needs_align) |
2504 | { | |
2505 | align = parse_align (needs_align - 1); | |
2506 | if (align == (addressT) -1) | |
2507 | return NULL; | |
252b5132 RH |
2508 | } |
2509 | else | |
e13bab5a AM |
2510 | /* Assume some objects may require alignment on some systems. */ |
2511 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2512 | |
e13bab5a AM |
2513 | bss_alloc (symbolP, size, align); |
2514 | return symbolP; | |
041ff4dd | 2515 | } |
252b5132 RH |
2516 | |
2517 | void | |
39e6acbd | 2518 | s_lcomm (int needs_align) |
252b5132 | 2519 | { |
e13bab5a | 2520 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2521 | } |
2522 | ||
041ff4dd | 2523 | void |
39e6acbd | 2524 | s_lcomm_bytes (int needs_align) |
252b5132 | 2525 | { |
e13bab5a | 2526 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2527 | } |
2528 | ||
041ff4dd | 2529 | void |
39e6acbd | 2530 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2531 | { |
3d540e93 | 2532 | char *name; |
252b5132 | 2533 | expressionS exp; |
3d540e93 | 2534 | symbolS *symbolP; |
252b5132 | 2535 | |
041ff4dd | 2536 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
7bfd842d NC |
2537 | if ((name = read_symbol_name ()) == NULL) |
2538 | return; | |
f0e652b4 | 2539 | |
252b5132 RH |
2540 | if (*input_line_pointer != ',') |
2541 | { | |
0e389e77 | 2542 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 2543 | goto err_out; |
252b5132 | 2544 | } |
f0e652b4 | 2545 | |
252b5132 | 2546 | input_line_pointer++; |
9497f5ac | 2547 | expression_and_evaluate (&exp); |
f0e652b4 | 2548 | |
252b5132 RH |
2549 | if (exp.X_op != O_constant |
2550 | && exp.X_op != O_register) | |
2551 | { | |
2552 | as_bad (_("bad expression")); | |
7bfd842d | 2553 | goto err_out; |
252b5132 | 2554 | } |
f0e652b4 | 2555 | |
252b5132 RH |
2556 | symbolP = symbol_find_or_make (name); |
2557 | ||
86ebace2 | 2558 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2559 | { |
2560 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2561 | keep the "external" bit. */ |
252b5132 RH |
2562 | S_SET_SEGMENT (symbolP, |
2563 | (exp.X_op == O_constant | |
2564 | ? absolute_section | |
2565 | : reg_section)); | |
2566 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2567 | } | |
2568 | else | |
2569 | { | |
0e389e77 | 2570 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2571 | } |
f0e652b4 | 2572 | |
252b5132 | 2573 | demand_empty_rest_of_line (); |
7bfd842d NC |
2574 | free (name); |
2575 | return; | |
2576 | ||
2577 | err_out: | |
2578 | ignore_rest_of_line (); | |
2579 | free (name); | |
2580 | return; | |
041ff4dd | 2581 | } |
252b5132 | 2582 | |
0822d075 NC |
2583 | /* Read a line into an sb. Returns the character that ended the line |
2584 | or zero if there are no more lines. */ | |
252b5132 RH |
2585 | |
2586 | static int | |
7592cfd7 | 2587 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2588 | { |
40a4d956 | 2589 | char *eol; |
252b5132 RH |
2590 | |
2591 | if (input_line_pointer[-1] == '\n') | |
2592 | bump_line_counters (); | |
2593 | ||
2594 | if (input_line_pointer >= buffer_limit) | |
2595 | { | |
2596 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2597 | if (buffer_limit == 0) | |
2598 | return 0; | |
2599 | } | |
2600 | ||
7592cfd7 | 2601 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2602 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2603 | input_line_pointer = eol; | |
f0e652b4 | 2604 | |
0822d075 NC |
2605 | /* Don't skip multiple end-of-line characters, because that breaks support |
2606 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2607 | characters but isn't. Instead just skip one end of line character and | |
2608 | return the character skipped so that the caller can re-insert it if | |
2609 | necessary. */ | |
40a4d956 | 2610 | return *input_line_pointer++; |
252b5132 RH |
2611 | } |
2612 | ||
39a45edc | 2613 | static size_t |
7592cfd7 NC |
2614 | get_non_macro_line_sb (sb *line) |
2615 | { | |
2616 | return get_line_sb (line, 0); | |
2617 | } | |
2618 | ||
39a45edc | 2619 | static size_t |
7592cfd7 NC |
2620 | get_macro_line_sb (sb *line) |
2621 | { | |
2622 | return get_line_sb (line, 1); | |
2623 | } | |
2624 | ||
fea17916 | 2625 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2626 | |
2627 | void | |
39e6acbd | 2628 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2629 | { |
40a4d956 | 2630 | char *file, *eol; |
252b5132 RH |
2631 | unsigned int line; |
2632 | sb s; | |
252b5132 RH |
2633 | const char *err; |
2634 | const char *name; | |
2635 | ||
2636 | as_where (&file, &line); | |
2637 | ||
40a4d956 | 2638 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2639 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2640 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2641 | input_line_pointer = eol; | |
252b5132 | 2642 | |
252b5132 | 2643 | if (line_label != NULL) |
360e86f1 JB |
2644 | { |
2645 | sb label; | |
d2ae702c | 2646 | size_t len; |
252b5132 | 2647 | |
d2ae702c L |
2648 | name = S_GET_NAME (line_label); |
2649 | len = strlen (name); | |
2650 | sb_build (&label, len); | |
2651 | sb_add_buffer (&label, name, len); | |
7592cfd7 | 2652 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2653 | sb_kill (&label); |
2654 | } | |
2655 | else | |
7592cfd7 | 2656 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2657 | if (err != NULL) |
02ddf156 | 2658 | as_bad_where (file, line, err, name); |
252b5132 RH |
2659 | else |
2660 | { | |
2661 | if (line_label != NULL) | |
2662 | { | |
5e75c3ab | 2663 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2664 | S_SET_VALUE (line_label, 0); |
2b47531b | 2665 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2666 | } |
2667 | ||
abd63a32 | 2668 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2669 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2670 | || (!flag_m68k_mri |
252b5132 RH |
2671 | && *name == '.' |
2672 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2673 | as_warn_where (file, |
2674 | line, | |
2675 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2676 | name); |
2677 | } | |
2678 | ||
2679 | sb_kill (&s); | |
2680 | } | |
2681 | ||
2682 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2683 | expansion. */ | |
2684 | ||
2685 | void | |
39e6acbd | 2686 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2687 | { |
5808f4a6 NC |
2688 | if (macro_nest) |
2689 | { | |
2690 | cond_exit_macro (macro_nest); | |
2691 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2692 | } | |
2693 | else | |
2694 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2695 | } |
2696 | ||
2697 | /* Switch in and out of MRI mode. */ | |
2698 | ||
2699 | void | |
39e6acbd | 2700 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2701 | { |
3d540e93 NC |
2702 | int on; |
2703 | #ifdef MRI_MODE_CHANGE | |
2704 | int old_flag; | |
2705 | #endif | |
252b5132 RH |
2706 | |
2707 | on = get_absolute_expression (); | |
3d540e93 | 2708 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2709 | old_flag = flag_mri; |
3d540e93 | 2710 | #endif |
252b5132 RH |
2711 | if (on != 0) |
2712 | { | |
2713 | flag_mri = 1; | |
2714 | #ifdef TC_M68K | |
2715 | flag_m68k_mri = 1; | |
2716 | #endif | |
2717 | macro_mri_mode (1); | |
2718 | } | |
2719 | else | |
2720 | { | |
2721 | flag_mri = 0; | |
abd63a32 | 2722 | #ifdef TC_M68K |
252b5132 | 2723 | flag_m68k_mri = 0; |
abd63a32 | 2724 | #endif |
252b5132 RH |
2725 | macro_mri_mode (0); |
2726 | } | |
2727 | ||
2728 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2729 | update the operator rankings. */ | |
2730 | expr_set_precedence (); | |
2731 | ||
2732 | #ifdef MRI_MODE_CHANGE | |
2733 | if (on != old_flag) | |
2734 | MRI_MODE_CHANGE (on); | |
2735 | #endif | |
2736 | ||
2737 | demand_empty_rest_of_line (); | |
2738 | } | |
2739 | ||
2740 | /* Handle changing the location counter. */ | |
2741 | ||
2742 | static void | |
39e6acbd | 2743 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 | 2744 | { |
259af69e AM |
2745 | if (segment != now_seg |
2746 | && segment != absolute_section | |
2747 | && segment != expr_section) | |
0e389e77 | 2748 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2749 | |
2750 | if (now_seg == absolute_section) | |
2751 | { | |
2752 | if (fill != 0) | |
2753 | as_warn (_("ignoring fill value in absolute section")); | |
2754 | if (exp->X_op != O_constant) | |
2755 | { | |
2756 | as_bad (_("only constant offsets supported in absolute section")); | |
2757 | exp->X_add_number = 0; | |
2758 | } | |
2759 | abs_section_offset = exp->X_add_number; | |
2760 | } | |
2761 | else | |
2762 | { | |
2763 | char *p; | |
2289f85d AM |
2764 | symbolS *sym = exp->X_add_symbol; |
2765 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2766 | |
2289f85d AM |
2767 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2768 | { | |
2769 | /* Handle complex expressions. */ | |
2770 | sym = make_expr_symbol (exp); | |
2771 | off = 0; | |
2772 | } | |
2773 | ||
2774 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2775 | *p = fill; |
2776 | } | |
2777 | } | |
2778 | ||
041ff4dd | 2779 | void |
39e6acbd | 2780 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2781 | { |
3d540e93 | 2782 | segT segment; |
252b5132 | 2783 | expressionS exp; |
3d540e93 | 2784 | long temp_fill; |
252b5132 RH |
2785 | |
2786 | #ifdef md_flush_pending_output | |
2787 | md_flush_pending_output (); | |
2788 | #endif | |
2789 | ||
2790 | /* The m68k MRI assembler has a different meaning for .org. It | |
2791 | means to create an absolute section at a given address. We can't | |
2792 | support that--use a linker script instead. */ | |
2793 | if (flag_m68k_mri) | |
2794 | { | |
2795 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2796 | ignore_rest_of_line (); | |
2797 | return; | |
2798 | } | |
2799 | ||
2800 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2801 | thing as a sub-segment-relative origin. Any absolute origin is | |
2802 | given a warning, then assumed to be segment-relative. Any | |
2803 | segmented origin expression ("foo+42") had better be in the right | |
2804 | segment or the .org is ignored. | |
2805 | ||
2806 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2807 | we never know sub-segment sizes when we are reading code. BSD | |
2808 | will crash trying to emit negative numbers of filler bytes in | |
2809 | certain .orgs. We don't crash, but see as-write for that code. | |
2810 | ||
2811 | Don't make frag if need_pass_2==1. */ | |
2812 | segment = get_known_segmented_expression (&exp); | |
2813 | if (*input_line_pointer == ',') | |
2814 | { | |
2815 | input_line_pointer++; | |
2816 | temp_fill = get_absolute_expression (); | |
2817 | } | |
2818 | else | |
2819 | temp_fill = 0; | |
2820 | ||
2821 | if (!need_pass_2) | |
2822 | do_org (segment, &exp, temp_fill); | |
2823 | ||
2824 | demand_empty_rest_of_line (); | |
041ff4dd | 2825 | } |
252b5132 RH |
2826 | |
2827 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2828 | called by the obj-format routine which handles section changing | |
2829 | when in MRI mode. It will create a new section, and return it. It | |
2830 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2831 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2832 | |
2833 | void | |
39e6acbd | 2834 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2835 | { |
2836 | #ifdef TC_M68K | |
2837 | ||
2838 | char *name; | |
2839 | char c; | |
2840 | segT seg; | |
2841 | ||
2842 | SKIP_WHITESPACE (); | |
041ff4dd | 2843 | |
252b5132 | 2844 | name = input_line_pointer; |
3882b010 | 2845 | if (!ISDIGIT (*name)) |
252b5132 RH |
2846 | c = get_symbol_end (); |
2847 | else | |
2848 | { | |
2849 | do | |
2850 | { | |
2851 | ++input_line_pointer; | |
2852 | } | |
3882b010 | 2853 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2854 | |
252b5132 RH |
2855 | c = *input_line_pointer; |
2856 | *input_line_pointer = '\0'; | |
2857 | } | |
2858 | ||
2859 | name = xstrdup (name); | |
2860 | ||
2861 | *input_line_pointer = c; | |
2862 | ||
2863 | seg = subseg_new (name, 0); | |
2864 | ||
2865 | if (*input_line_pointer == ',') | |
2866 | { | |
2867 | int align; | |
2868 | ||
2869 | ++input_line_pointer; | |
2870 | align = get_absolute_expression (); | |
2871 | record_alignment (seg, align); | |
2872 | } | |
2873 | ||
2874 | *type = 'C'; | |
2875 | if (*input_line_pointer == ',') | |
2876 | { | |
2877 | c = *++input_line_pointer; | |
3882b010 | 2878 | c = TOUPPER (c); |
252b5132 RH |
2879 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2880 | *type = c; | |
2881 | else | |
2882 | as_bad (_("unrecognized section type")); | |
2883 | ++input_line_pointer; | |
2884 | ||
252b5132 RH |
2885 | { |
2886 | flagword flags; | |
2887 | ||
2888 | flags = SEC_NO_FLAGS; | |
2889 | if (*type == 'C') | |
2890 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2891 | else if (*type == 'D' || *type == 'M') | |
2892 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2893 | else if (*type == 'R') | |
2894 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2895 | if (flags != SEC_NO_FLAGS) | |
2896 | { | |
041ff4dd | 2897 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2898 | as_warn (_("error setting flags for \"%s\": %s"), |
2899 | bfd_section_name (stdoutput, seg), | |
2900 | bfd_errmsg (bfd_get_error ())); | |
2901 | } | |
2902 | } | |
252b5132 RH |
2903 | } |
2904 | ||
2905 | /* Ignore the HP type. */ | |
2906 | if (*input_line_pointer == ',') | |
2907 | input_line_pointer += 2; | |
2908 | ||
2909 | demand_empty_rest_of_line (); | |
2910 | ||
2911 | #else /* ! TC_M68K */ | |
2912 | #ifdef TC_I960 | |
2913 | ||
2914 | char *name; | |
2915 | char c; | |
2916 | segT seg; | |
2917 | ||
2918 | SKIP_WHITESPACE (); | |
2919 | ||
2920 | name = input_line_pointer; | |
2921 | c = get_symbol_end (); | |
2922 | ||
2923 | name = xstrdup (name); | |
2924 | ||
2925 | *input_line_pointer = c; | |
2926 | ||
2927 | seg = subseg_new (name, 0); | |
2928 | ||
2929 | if (*input_line_pointer != ',') | |
2930 | *type = 'C'; | |
2931 | else | |
2932 | { | |
2933 | char *sectype; | |
2934 | ||
2935 | ++input_line_pointer; | |
2936 | SKIP_WHITESPACE (); | |
2937 | sectype = input_line_pointer; | |
2938 | c = get_symbol_end (); | |
2939 | if (*sectype == '\0') | |
2940 | *type = 'C'; | |
2941 | else if (strcasecmp (sectype, "text") == 0) | |
2942 | *type = 'C'; | |
2943 | else if (strcasecmp (sectype, "data") == 0) | |
2944 | *type = 'D'; | |
2945 | else if (strcasecmp (sectype, "romdata") == 0) | |
2946 | *type = 'R'; | |
2947 | else | |
2948 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2949 | *input_line_pointer = c; | |
2950 | } | |
2951 | ||
2952 | if (*input_line_pointer == ',') | |
2953 | { | |
2954 | char *seccmd; | |
2955 | ||
2956 | ++input_line_pointer; | |
2957 | SKIP_WHITESPACE (); | |
2958 | seccmd = input_line_pointer; | |
2959 | c = get_symbol_end (); | |
2960 | if (strcasecmp (seccmd, "absolute") == 0) | |
2961 | { | |
2962 | as_bad (_("absolute sections are not supported")); | |
2963 | *input_line_pointer = c; | |
2964 | ignore_rest_of_line (); | |
2965 | return; | |
2966 | } | |
2967 | else if (strcasecmp (seccmd, "align") == 0) | |
2968 | { | |
2969 | int align; | |
2970 | ||
2971 | *input_line_pointer = c; | |
2972 | align = get_absolute_expression (); | |
2973 | record_alignment (seg, align); | |
2974 | } | |
2975 | else | |
2976 | { | |
2977 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2978 | *input_line_pointer = c; | |
2979 | } | |
2980 | } | |
2981 | ||
041ff4dd | 2982 | demand_empty_rest_of_line (); |
252b5132 RH |
2983 | |
2984 | #else /* ! TC_I960 */ | |
2985 | /* The MRI assembler seems to use different forms of .sect for | |
2986 | different targets. */ | |
2987 | as_bad ("MRI mode not supported for this target"); | |
2988 | ignore_rest_of_line (); | |
2989 | #endif /* ! TC_I960 */ | |
2990 | #endif /* ! TC_M68K */ | |
2991 | } | |
2992 | ||
2993 | /* Handle the .print pseudo-op. */ | |
2994 | ||
2995 | void | |
39e6acbd | 2996 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2997 | { |
2998 | char *s; | |
2999 | int len; | |
3000 | ||
3001 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
3002 | if (s != NULL) |
3003 | printf ("%s\n", s); | |
252b5132 RH |
3004 | demand_empty_rest_of_line (); |
3005 | } | |
3006 | ||
3007 | /* Handle the .purgem pseudo-op. */ | |
3008 | ||
3009 | void | |
39e6acbd | 3010 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3011 | { |
3012 | if (is_it_end_of_statement ()) | |
3013 | { | |
3014 | demand_empty_rest_of_line (); | |
3015 | return; | |
3016 | } | |
3017 | ||
3018 | do | |
3019 | { | |
3020 | char *name; | |
3021 | char c; | |
3022 | ||
3023 | SKIP_WHITESPACE (); | |
3024 | name = input_line_pointer; | |
3025 | c = get_symbol_end (); | |
3026 | delete_macro (name); | |
3027 | *input_line_pointer = c; | |
3028 | SKIP_WHITESPACE (); | |
3029 | } | |
3030 | while (*input_line_pointer++ == ','); | |
3031 | ||
3032 | --input_line_pointer; | |
3033 | demand_empty_rest_of_line (); | |
3034 | } | |
3035 | ||
057f53c1 | 3036 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 3037 | |
057f53c1 JB |
3038 | static void |
3039 | s_bad_end (int endr) | |
7f28ab9d | 3040 | { |
cc643b88 | 3041 | as_warn (_(".end%c encountered without preceding %s"), |
057f53c1 JB |
3042 | endr ? 'r' : 'm', |
3043 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
3044 | demand_empty_rest_of_line (); |
3045 | } | |
3046 | ||
3047 | /* Handle the .rept pseudo-op. */ | |
3048 | ||
252b5132 | 3049 | void |
39e6acbd | 3050 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3051 | { |
3052 | int count; | |
252b5132 RH |
3053 | |
3054 | count = get_absolute_expression (); | |
3055 | ||
041ff4dd | 3056 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
3057 | } |
3058 | ||
3059 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 3060 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
3061 | |
3062 | void | |
39e6acbd | 3063 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
3064 | { |
3065 | sb one; | |
3066 | sb many; | |
3067 | ||
252b5132 | 3068 | sb_new (&one); |
7592cfd7 | 3069 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 3070 | { |
6dc19fc4 | 3071 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
3072 | return; |
3073 | } | |
3074 | ||
d2ae702c | 3075 | sb_build (&many, count * one.len); |
252b5132 RH |
3076 | while (count-- > 0) |
3077 | sb_add_sb (&many, &one); | |
3078 | ||
3079 | sb_kill (&one); | |
3080 | ||
9f10757c | 3081 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
3082 | sb_kill (&many); |
3083 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3084 | } | |
3085 | ||
c7927a3c NC |
3086 | /* Like do_repeat except that any text matching EXPANDER in the |
3087 | block is replaced by the itteration count. */ | |
3088 | ||
3089 | void | |
3090 | do_repeat_with_expander (int count, | |
3091 | const char * start, | |
3092 | const char * end, | |
3093 | const char * expander) | |
3094 | { | |
3095 | sb one; | |
3096 | sb many; | |
3097 | ||
3098 | sb_new (&one); | |
3099 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3100 | { | |
3101 | as_bad (_("%s without %s"), start, end); | |
3102 | return; | |
3103 | } | |
3104 | ||
3105 | sb_new (&many); | |
3106 | ||
3107 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3108 | { | |
3109 | while (count -- > 0) | |
3110 | { | |
3111 | int len; | |
3112 | char * sub; | |
3113 | sb processed; | |
3114 | ||
d2ae702c | 3115 | sb_build (& processed, one.len); |
c7927a3c NC |
3116 | sb_add_sb (& processed, & one); |
3117 | sub = strstr (processed.ptr, expander); | |
3118 | len = sprintf (sub, "%d", count); | |
3119 | gas_assert (len < 8); | |
3120 | strcpy (sub + len, sub + 8); | |
3121 | processed.len -= (8 - len); | |
3122 | sb_add_sb (& many, & processed); | |
3123 | sb_kill (& processed); | |
3124 | } | |
3125 | } | |
3126 | else | |
3127 | while (count-- > 0) | |
3128 | sb_add_sb (&many, &one); | |
3129 | ||
3130 | sb_kill (&one); | |
3131 | ||
3132 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3133 | sb_kill (&many); | |
3134 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3135 | } | |
3136 | ||
6dc19fc4 TW |
3137 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3138 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3139 | are properly nested. |
6dc19fc4 TW |
3140 | |
3141 | This function makes it easier to implement a premature "break" out of the | |
3142 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3143 | such as line substitutions. */ |
6dc19fc4 TW |
3144 | |
3145 | void | |
39e6acbd | 3146 | end_repeat (int extra) |
6dc19fc4 TW |
3147 | { |
3148 | cond_exit_macro (macro_nest); | |
3149 | while (extra-- >= 0) | |
3150 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3151 | } | |
3152 | ||
be95a9c1 | 3153 | static void |
9497f5ac | 3154 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3155 | { |
3156 | symbolS *symbolP; | |
3157 | ||
3158 | if (name[0] == '.' && name[1] == '\0') | |
3159 | { | |
3160 | /* Turn '. = mumble' into a .org mumble. */ | |
3161 | segT segment; | |
3162 | expressionS exp; | |
3163 | ||
3164 | segment = get_known_segmented_expression (&exp); | |
3165 | ||
3166 | if (!need_pass_2) | |
3167 | do_org (segment, &exp, 0); | |
3168 | ||
3169 | return; | |
3170 | } | |
3171 | ||
3172 | if ((symbolP = symbol_find (name)) == NULL | |
3173 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3174 | { | |
3175 | symbolP = symbol_find_or_make (name); | |
3176 | #ifndef NO_LISTING | |
3177 | /* When doing symbol listings, play games with dummy fragments living | |
3178 | outside the normal fragment chain to record the file and line info | |
3179 | for this symbol. */ | |
3180 | if (listing & LISTING_SYMBOLS) | |
3181 | { | |
3182 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 3183 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
3184 | dummy_frag->line = listing_tail; |
3185 | dummy_frag->fr_symbol = symbolP; | |
3186 | symbol_set_frag (symbolP, dummy_frag); | |
3187 | } | |
3188 | #endif | |
31d20a21 AM |
3189 | #ifdef OBJ_COFF |
3190 | /* "set" symbols are local unless otherwise specified. */ | |
3191 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3192 | #endif |
3193 | } | |
3194 | ||
6a2b6326 | 3195 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac | 3196 | { |
9497f5ac | 3197 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) |
6885131b | 3198 | && !S_CAN_BE_REDEFINED (symbolP)) |
9497f5ac NC |
3199 | { |
3200 | as_bad (_("symbol `%s' is already defined"), name); | |
3201 | symbolP = symbol_clone (symbolP, 0); | |
3202 | } | |
3203 | /* If the symbol is volatile, copy the symbol and replace the | |
3204 | original with the copy, so that previous uses of the symbol will | |
3205 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3206 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3207 | symbolP = symbol_clone (symbolP, 1); |
3208 | } | |
3209 | ||
3210 | if (mode == 0) | |
3211 | S_SET_VOLATILE (symbolP); | |
3212 | else if (mode < 0) | |
3213 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3214 | |
3215 | pseudo_set (symbolP); | |
be95a9c1 AM |
3216 | } |
3217 | ||
9497f5ac NC |
3218 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3219 | then this is .equiv, and it is an error if the symbol is already | |
3220 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3221 | reference. */ | |
252b5132 | 3222 | |
041ff4dd | 3223 | void |
39e6acbd | 3224 | s_set (int equiv) |
252b5132 | 3225 | { |
be95a9c1 | 3226 | char *name; |
252b5132 | 3227 | |
041ff4dd NC |
3228 | /* Especial apologies for the random logic: |
3229 | this just grew, and could be parsed much more simply! | |
3230 | Dean in haste. */ | |
7bfd842d NC |
3231 | if ((name = read_symbol_name ()) == NULL) |
3232 | return; | |
252b5132 RH |
3233 | |
3234 | if (*input_line_pointer != ',') | |
3235 | { | |
0e389e77 | 3236 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 | 3237 | ignore_rest_of_line (); |
7bfd842d | 3238 | free (name); |
252b5132 RH |
3239 | return; |
3240 | } | |
3241 | ||
3242 | input_line_pointer++; | |
be95a9c1 | 3243 | assign_symbol (name, equiv); |
31d20a21 | 3244 | demand_empty_rest_of_line (); |
7bfd842d | 3245 | free (name); |
041ff4dd | 3246 | } |
252b5132 | 3247 | |
041ff4dd | 3248 | void |
39e6acbd | 3249 | s_space (int mult) |
252b5132 RH |
3250 | { |
3251 | expressionS exp; | |
3252 | expressionS val; | |
3253 | char *p = 0; | |
3254 | char *stop = NULL; | |
fb25138b | 3255 | char stopc = 0; |
252b5132 RH |
3256 | int bytes; |
3257 | ||
3258 | #ifdef md_flush_pending_output | |
3259 | md_flush_pending_output (); | |
3260 | #endif | |
3261 | ||
cc3f603a JM |
3262 | #ifdef md_cons_align |
3263 | md_cons_align (1); | |
3264 | #endif | |
3265 | ||
252b5132 RH |
3266 | if (flag_mri) |
3267 | stop = mri_comment_field (&stopc); | |
3268 | ||
3269 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3270 | this is ds.b. */ | |
3271 | if (flag_m68k_mri && mult > 1) | |
3272 | { | |
3273 | if (now_seg == absolute_section) | |
3274 | { | |
3275 | abs_section_offset += abs_section_offset & 1; | |
3276 | if (line_label != NULL) | |
3277 | S_SET_VALUE (line_label, abs_section_offset); | |
3278 | } | |
3279 | else if (mri_common_symbol != NULL) | |
3280 | { | |
91d6fa6a | 3281 | valueT mri_val; |
252b5132 | 3282 | |
91d6fa6a NC |
3283 | mri_val = S_GET_VALUE (mri_common_symbol); |
3284 | if ((mri_val & 1) != 0) | |
252b5132 | 3285 | { |
91d6fa6a | 3286 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3287 | if (line_label != NULL) |
3288 | { | |
2b47531b ILT |
3289 | expressionS *symexp; |
3290 | ||
3291 | symexp = symbol_get_value_expression (line_label); | |
3292 | know (symexp->X_op == O_symbol); | |
3293 | know (symexp->X_add_symbol == mri_common_symbol); | |
3294 | symexp->X_add_number += 1; | |
252b5132 RH |
3295 | } |
3296 | } | |
3297 | } | |
3298 | else | |
3299 | { | |
3300 | do_align (1, (char *) NULL, 0, 0); | |
3301 | if (line_label != NULL) | |
3302 | { | |
2b47531b | 3303 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3304 | S_SET_VALUE (line_label, frag_now_fix ()); |
3305 | } | |
3306 | } | |
3307 | } | |
3308 | ||
3309 | bytes = mult; | |
3310 | ||
3311 | expression (&exp); | |
3312 | ||
3313 | SKIP_WHITESPACE (); | |
3314 | if (*input_line_pointer == ',') | |
3315 | { | |
3316 | ++input_line_pointer; | |
3317 | expression (&val); | |
3318 | } | |
3319 | else | |
3320 | { | |
3321 | val.X_op = O_constant; | |
3322 | val.X_add_number = 0; | |
3323 | } | |
3324 | ||
3325 | if (val.X_op != O_constant | |
3326 | || val.X_add_number < - 0x80 | |
3327 | || val.X_add_number > 0xff | |
3328 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3329 | { | |
9497f5ac | 3330 | resolve_expression (&exp); |
252b5132 | 3331 | if (exp.X_op != O_constant) |
0e389e77 | 3332 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3333 | else |
3334 | { | |
3335 | offsetT i; | |
3336 | ||
3337 | if (mult == 0) | |
3338 | mult = 1; | |
3339 | bytes = mult * exp.X_add_number; | |
3340 | for (i = 0; i < exp.X_add_number; i++) | |
3341 | emit_expr (&val, mult); | |
3342 | } | |
3343 | } | |
3344 | else | |
3345 | { | |
9497f5ac NC |
3346 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3347 | resolve_expression (&exp); | |
3348 | ||
252b5132 RH |
3349 | if (exp.X_op == O_constant) |
3350 | { | |
a4a151e6 | 3351 | offsetT repeat; |
252b5132 RH |
3352 | |
3353 | repeat = exp.X_add_number; | |
3354 | if (mult) | |
3355 | repeat *= mult; | |
3356 | bytes = repeat; | |
3357 | if (repeat <= 0) | |
3358 | { | |
2d150871 RO |
3359 | if (!flag_mri) |
3360 | as_warn (_(".space repeat count is zero, ignored")); | |
3361 | else if (repeat < 0) | |
252b5132 RH |
3362 | as_warn (_(".space repeat count is negative, ignored")); |
3363 | goto getout; | |
3364 | } | |
3365 | ||
3366 | /* If we are in the absolute section, just bump the offset. */ | |
3367 | if (now_seg == absolute_section) | |
3368 | { | |
3369 | abs_section_offset += repeat; | |
3370 | goto getout; | |
3371 | } | |
3372 | ||
3373 | /* If we are secretly in an MRI common section, then | |
3374 | creating space just increases the size of the common | |
3375 | symbol. */ | |
3376 | if (mri_common_symbol != NULL) | |
3377 | { | |
3378 | S_SET_VALUE (mri_common_symbol, | |
3379 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3380 | goto getout; | |
3381 | } | |
3382 | ||
3383 | if (!need_pass_2) | |
3384 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3385 | (offsetT) repeat, (char *) 0); | |
3386 | } | |
3387 | else | |
3388 | { | |
3389 | if (now_seg == absolute_section) | |
3390 | { | |
3391 | as_bad (_("space allocation too complex in absolute section")); | |
3392 | subseg_set (text_section, 0); | |
3393 | } | |
f0e652b4 | 3394 | |
252b5132 RH |
3395 | if (mri_common_symbol != NULL) |
3396 | { | |
3397 | as_bad (_("space allocation too complex in common section")); | |
3398 | mri_common_symbol = NULL; | |
3399 | } | |
f0e652b4 | 3400 | |
252b5132 RH |
3401 | if (!need_pass_2) |
3402 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3403 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3404 | } | |
3405 | ||
3406 | if (p) | |
3407 | *p = val.X_add_number; | |
3408 | } | |
3409 | ||
3410 | getout: | |
3411 | ||
3412 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3413 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3414 | or dcb.b. */ | |
3415 | if (flag_mri && (bytes & 1) != 0) | |
3416 | mri_pending_align = 1; | |
3417 | ||
3418 | demand_empty_rest_of_line (); | |
3419 | ||
3420 | if (flag_mri) | |
3421 | mri_comment_end (stop, stopc); | |
3422 | } | |
3423 | ||
3424 | /* This is like s_space, but the value is a floating point number with | |
3425 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3426 | friends. */ | |
3427 | ||
3428 | void | |
39e6acbd | 3429 | s_float_space (int float_type) |
252b5132 RH |
3430 | { |
3431 | offsetT count; | |
3432 | int flen; | |
3433 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3434 | char *stop = NULL; | |
fb25138b | 3435 | char stopc = 0; |
252b5132 | 3436 | |
cc3f603a JM |
3437 | #ifdef md_cons_align |
3438 | md_cons_align (1); | |
3439 | #endif | |
3440 | ||
252b5132 RH |
3441 | if (flag_mri) |
3442 | stop = mri_comment_field (&stopc); | |
3443 | ||
3444 | count = get_absolute_expression (); | |
3445 | ||
3446 | SKIP_WHITESPACE (); | |
3447 | if (*input_line_pointer != ',') | |
3448 | { | |
3449 | as_bad (_("missing value")); | |
3450 | ignore_rest_of_line (); | |
3451 | if (flag_mri) | |
3452 | mri_comment_end (stop, stopc); | |
3453 | return; | |
3454 | } | |
3455 | ||
3456 | ++input_line_pointer; | |
3457 | ||
3458 | SKIP_WHITESPACE (); | |
3459 | ||
3460 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3461 | * letter is legal. */ | |
3462 | if (input_line_pointer[0] == '0' | |
3882b010 | 3463 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3464 | input_line_pointer += 2; |
3465 | ||
3466 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3467 | with the exact digits specified. */ | |
3468 | if (input_line_pointer[0] == ':') | |
3469 | { | |
3470 | flen = hex_float (float_type, temp); | |
3471 | if (flen < 0) | |
3472 | { | |
3473 | ignore_rest_of_line (); | |
3474 | if (flag_mri) | |
3475 | mri_comment_end (stop, stopc); | |
3476 | return; | |
3477 | } | |
3478 | } | |
3479 | else | |
3480 | { | |
3481 | char *err; | |
3482 | ||
3483 | err = md_atof (float_type, temp, &flen); | |
3484 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3485 | know (err != NULL || flen > 0); |
252b5132 RH |
3486 | if (err) |
3487 | { | |
0e389e77 | 3488 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3489 | ignore_rest_of_line (); |
3490 | if (flag_mri) | |
3491 | mri_comment_end (stop, stopc); | |
3492 | return; | |
3493 | } | |
3494 | } | |
3495 | ||
3496 | while (--count >= 0) | |
3497 | { | |
3498 | char *p; | |
3499 | ||
3500 | p = frag_more (flen); | |
3501 | memcpy (p, temp, (unsigned int) flen); | |
3502 | } | |
3503 | ||
3504 | demand_empty_rest_of_line (); | |
3505 | ||
3506 | if (flag_mri) | |
3507 | mri_comment_end (stop, stopc); | |
3508 | } | |
3509 | ||
3510 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3511 | ||
3512 | void | |
39e6acbd | 3513 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3514 | { |
3515 | char *stop = NULL; | |
fb25138b | 3516 | char stopc = 0; |
252b5132 RH |
3517 | |
3518 | if (flag_mri) | |
3519 | stop = mri_comment_field (&stopc); | |
3520 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3521 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3522 | /* The ELF backend needs to know that we are changing sections, so | |
3523 | that .previous works correctly. */ | |
f43abd2b | 3524 | if (IS_ELF) |
a2902af6 TS |
3525 | obj_elf_section_change_hook (); |
3526 | #endif | |
252b5132 RH |
3527 | subseg_set (absolute_section, 0); |
3528 | demand_empty_rest_of_line (); | |
3529 | if (flag_mri) | |
3530 | mri_comment_end (stop, stopc); | |
3531 | } | |
3532 | ||
3533 | void | |
39e6acbd | 3534 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3535 | { |
3d540e93 | 3536 | int temp; |
252b5132 RH |
3537 | |
3538 | temp = get_absolute_expression (); | |
3539 | subseg_set (text_section, (subsegT) temp); | |
3540 | demand_empty_rest_of_line (); | |
041ff4dd | 3541 | } |
06e77878 AO |
3542 | |
3543 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3544 | referenced directly, will cause y to become a weak symbol. */ | |
3545 | void | |
3546 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3547 | { | |
3548 | char *name; | |
06e77878 AO |
3549 | symbolS *symbolP; |
3550 | symbolS *symbolP2; | |
3551 | expressionS exp; | |
3552 | ||
7bfd842d NC |
3553 | if ((name = read_symbol_name ()) == NULL) |
3554 | return; | |
06e77878 AO |
3555 | |
3556 | symbolP = symbol_find_or_make (name); | |
3557 | ||
b54788f8 AO |
3558 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3559 | { | |
89cdfe57 | 3560 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3561 | { |
3562 | as_bad (_("symbol `%s' is already defined"), name); | |
7bfd842d | 3563 | goto err_out; |
92757bc9 | 3564 | } |
89cdfe57 | 3565 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3566 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3567 | } |
3568 | ||
06e77878 AO |
3569 | SKIP_WHITESPACE (); |
3570 | ||
3571 | if (*input_line_pointer != ',') | |
3572 | { | |
06e77878 | 3573 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 3574 | goto err_out; |
06e77878 AO |
3575 | } |
3576 | ||
3577 | input_line_pointer++; | |
3578 | ||
3579 | SKIP_WHITESPACE (); | |
7bfd842d | 3580 | free (name); |
06e77878 | 3581 | |
7bfd842d NC |
3582 | if ((name = read_symbol_name ()) == NULL) |
3583 | return; | |
06e77878 AO |
3584 | |
3585 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3586 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3587 | { | |
3588 | symbolP2 = symbol_find_or_make (name); | |
3589 | S_SET_WEAKREFD (symbolP2); | |
3590 | } | |
3591 | else | |
3592 | { | |
3593 | symbolS *symp = symbolP2; | |
3594 | ||
3595 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3596 | { | |
3597 | expressionS *expP = symbol_get_value_expression (symp); | |
3598 | ||
9c2799c2 | 3599 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3600 | && expP->X_add_number == 0); |
3601 | symp = expP->X_add_symbol; | |
3602 | } | |
3603 | if (symp == symbolP) | |
3604 | { | |
3605 | char *loop; | |
3606 | ||
3607 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3608 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3609 | |
3610 | symp = symbolP2; | |
3611 | while (symp != symbolP) | |
3612 | { | |
3613 | char *old_loop = loop; | |
7bfd842d | 3614 | |
06e77878 | 3615 | symp = symbol_get_value_expression (symp)->X_add_symbol; |
1bf57e9f AM |
3616 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3617 | (const char *) NULL); | |
06e77878 AO |
3618 | free (old_loop); |
3619 | } | |
3620 | ||
3621 | as_bad (_("%s: would close weakref loop: %s"), | |
3622 | S_GET_NAME (symbolP), loop); | |
3623 | ||
3624 | free (loop); | |
7bfd842d | 3625 | free (name); |
06e77878 AO |
3626 | ignore_rest_of_line (); |
3627 | return; | |
3628 | } | |
3629 | ||
3630 | /* Short-circuiting instead of just checking here might speed | |
3631 | things up a tiny little bit, but loop error messages would | |
3632 | miss intermediate links. */ | |
3633 | /* symbolP2 = symp; */ | |
3634 | } | |
3635 | ||
06e77878 AO |
3636 | memset (&exp, 0, sizeof (exp)); |
3637 | exp.X_op = O_symbol; | |
3638 | exp.X_add_symbol = symbolP2; | |
3639 | ||
3640 | S_SET_SEGMENT (symbolP, undefined_section); | |
3641 | symbol_set_value_expression (symbolP, &exp); | |
3642 | symbol_set_frag (symbolP, &zero_address_frag); | |
3643 | S_SET_WEAKREFR (symbolP); | |
3644 | ||
3645 | demand_empty_rest_of_line (); | |
7bfd842d NC |
3646 | free (name); |
3647 | return; | |
3648 | ||
3649 | err_out: | |
3650 | ignore_rest_of_line (); | |
3651 | free (name); | |
3652 | return; | |
06e77878 | 3653 | } |
252b5132 | 3654 | \f |
c95b35a9 NS |
3655 | |
3656 | /* Verify that we are at the end of a line. If not, issue an error and | |
3657 | skip to EOL. */ | |
3658 | ||
041ff4dd | 3659 | void |
39e6acbd | 3660 | demand_empty_rest_of_line (void) |
252b5132 RH |
3661 | { |
3662 | SKIP_WHITESPACE (); | |
3663 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3664 | input_line_pointer++; |
252b5132 | 3665 | else |
252b5132 | 3666 | { |
3882b010 | 3667 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3668 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3669 | *input_line_pointer); |
252b5132 | 3670 | else |
c95b35a9 | 3671 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3672 | *input_line_pointer); |
c95b35a9 | 3673 | ignore_rest_of_line (); |
252b5132 | 3674 | } |
fa94de6b | 3675 | |
c95b35a9 NS |
3676 | /* Return pointing just after end-of-line. */ |
3677 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3678 | } | |
3679 | ||
3680 | /* Silently advance to the end of line. Use this after already having | |
3681 | issued an error about something bad. */ | |
3682 | ||
3683 | void | |
3684 | ignore_rest_of_line (void) | |
3685 | { | |
3686 | while (input_line_pointer < buffer_limit | |
3687 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3688 | input_line_pointer++; | |
f0e652b4 | 3689 | |
041ff4dd NC |
3690 | input_line_pointer++; |
3691 | ||
3692 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3693 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3694 | } | |
3695 | ||
be95a9c1 AM |
3696 | /* Sets frag for given symbol to zero_address_frag, except when the |
3697 | symbol frag is already set to a dummy listing frag. */ | |
3698 | ||
3699 | static void | |
3700 | set_zero_frag (symbolS *symbolP) | |
3701 | { | |
3702 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3703 | symbol_set_frag (symbolP, &zero_address_frag); | |
3704 | } | |
3705 | ||
041ff4dd | 3706 | /* In: Pointer to a symbol. |
d6415f6c | 3707 | Input_line_pointer->expression. |
f0e652b4 | 3708 | |
041ff4dd | 3709 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3710 | Tried to set symbol to value of expression. |
3711 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3712 | |
252b5132 | 3713 | void |
39e6acbd | 3714 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3715 | { |
3716 | expressionS exp; | |
be95a9c1 | 3717 | segT seg; |
252b5132 | 3718 | |
041ff4dd | 3719 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3720 | |
9497f5ac NC |
3721 | if (!S_IS_FORWARD_REF (symbolP)) |
3722 | (void) expression (&exp); | |
3723 | else | |
3724 | (void) deferred_expression (&exp); | |
252b5132 RH |
3725 | |
3726 | if (exp.X_op == O_illegal) | |
0e389e77 | 3727 | as_bad (_("illegal expression")); |
252b5132 | 3728 | else if (exp.X_op == O_absent) |
0e389e77 | 3729 | as_bad (_("missing expression")); |
252b5132 RH |
3730 | else if (exp.X_op == O_big) |
3731 | { | |
3732 | if (exp.X_add_number > 0) | |
0e389e77 | 3733 | as_bad (_("bignum invalid")); |
252b5132 | 3734 | else |
0e389e77 | 3735 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3736 | } |
3737 | else if (exp.X_op == O_subtract | |
9497f5ac | 3738 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3739 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3740 | && (symbol_get_frag (exp.X_add_symbol) |
3741 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3742 | { |
3743 | exp.X_op = O_constant; | |
3744 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3745 | - S_GET_VALUE (exp.X_op_symbol)); | |
3746 | } | |
3747 | ||
be95a9c1 AM |
3748 | if (symbol_section_p (symbolP)) |
3749 | { | |
3750 | as_bad ("attempt to set value of section symbol"); | |
3751 | return; | |
3752 | } | |
be95a9c1 | 3753 | |
252b5132 RH |
3754 | switch (exp.X_op) |
3755 | { | |
3756 | case O_illegal: | |
3757 | case O_absent: | |
3758 | case O_big: | |
3759 | exp.X_add_number = 0; | |
3760 | /* Fall through. */ | |
3761 | case O_constant: | |
3762 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3763 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3764 | set_zero_frag (symbolP); |
252b5132 RH |
3765 | break; |
3766 | ||
3767 | case O_register: | |
97c4f2d9 | 3768 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3769 | if (S_IS_EXTERNAL (symbolP)) |
3770 | { | |
3771 | as_bad ("can't equate global symbol `%s' with register name", | |
3772 | S_GET_NAME (symbolP)); | |
3773 | return; | |
3774 | } | |
97c4f2d9 | 3775 | #endif |
252b5132 RH |
3776 | S_SET_SEGMENT (symbolP, reg_section); |
3777 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3778 | set_zero_frag (symbolP); |
db557034 | 3779 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3780 | break; |
3781 | ||
3782 | case O_symbol: | |
be95a9c1 AM |
3783 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3784 | /* For x=undef+const, create an expression symbol. | |
3785 | For x=x+const, just update x except when x is an undefined symbol | |
3786 | For x=defined+const, evaluate x. */ | |
3787 | if (symbolP == exp.X_add_symbol | |
3788 | && (seg != undefined_section | |
3789 | || !symbol_constant_p (symbolP))) | |
3790 | { | |
3791 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3792 | break; | |
3793 | } | |
9497f5ac | 3794 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3795 | { |
3796 | symbolS *s = exp.X_add_symbol; | |
3797 | ||
60938e80 L |
3798 | if (S_IS_COMMON (s)) |
3799 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3800 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3801 | ||
be95a9c1 AM |
3802 | S_SET_SEGMENT (symbolP, seg); |
3803 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3804 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3805 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3806 | break; |
252b5132 | 3807 | } |
66bd02d3 AM |
3808 | S_SET_SEGMENT (symbolP, undefined_section); |
3809 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 3810 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
3811 | set_zero_frag (symbolP); |
3812 | break; | |
252b5132 RH |
3813 | |
3814 | default: | |
aba4aa7d AM |
3815 | /* The value is some complex expression. */ |
3816 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3817 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3818 | set_zero_frag (symbolP); |
252b5132 RH |
3819 | break; |
3820 | } | |
3821 | } | |
3822 | \f | |
d6415f6c | 3823 | /* cons() |
f0e652b4 | 3824 | |
041ff4dd NC |
3825 | CONStruct more frag of .bytes, or .words etc. |
3826 | Should need_pass_2 be 1 then emit no frag(s). | |
3827 | This understands EXPRESSIONS. | |
f0e652b4 | 3828 | |
041ff4dd | 3829 | Bug (?) |
f0e652b4 | 3830 | |
041ff4dd NC |
3831 | This has a split personality. We use expression() to read the |
3832 | value. We can detect if the value won't fit in a byte or word. | |
3833 | But we can't detect if expression() discarded significant digits | |
3834 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3835 | |
3836 | /* Select a parser for cons expressions. */ | |
3837 | ||
3838 | /* Some targets need to parse the expression in various fancy ways. | |
3839 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3840 | (for example, the HPPA does this). Otherwise, you can define | |
3841 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3842 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3843 | are defined, which is the normal case, then only simple expressions | |
3844 | are permitted. */ | |
3845 | ||
abd63a32 | 3846 | #ifdef TC_M68K |
252b5132 | 3847 | static void |
39e6acbd | 3848 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3849 | #endif |
252b5132 RH |
3850 | |
3851 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3852 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3853 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3854 | static void |
39e6acbd | 3855 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3856 | #endif |
3857 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3858 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3859 | static void | |
39e6acbd | 3860 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3861 | #endif |
3862 | ||
3863 | /* If we haven't gotten one yet, just call expression. */ | |
3864 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3865 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3866 | #endif | |
3867 | #endif | |
3868 | ||
cdfbf930 | 3869 | void |
b41b1f95 L |
3870 | do_parse_cons_expression (expressionS *exp, |
3871 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3872 | { |
3873 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3874 | } | |
3875 | ||
3876 | ||
041ff4dd NC |
3877 | /* Worker to do .byte etc statements. |
3878 | Clobbers input_line_pointer and checks end-of-line. */ | |
3879 | ||
3880 | static void | |
3d540e93 | 3881 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 3882 | int rva) |
252b5132 RH |
3883 | { |
3884 | int c; | |
3885 | expressionS exp; | |
3886 | char *stop = NULL; | |
fb25138b | 3887 | char stopc = 0; |
252b5132 RH |
3888 | |
3889 | #ifdef md_flush_pending_output | |
3890 | md_flush_pending_output (); | |
3891 | #endif | |
3892 | ||
3893 | if (flag_mri) | |
3894 | stop = mri_comment_field (&stopc); | |
3895 | ||
3896 | if (is_it_end_of_statement ()) | |
3897 | { | |
3898 | demand_empty_rest_of_line (); | |
3899 | if (flag_mri) | |
3900 | mri_comment_end (stop, stopc); | |
3901 | return; | |
3902 | } | |
3903 | ||
cc1bc22a AM |
3904 | #ifdef TC_ADDRESS_BYTES |
3905 | if (nbytes == 0) | |
3906 | nbytes = TC_ADDRESS_BYTES (); | |
3907 | #endif | |
3908 | ||
252b5132 RH |
3909 | #ifdef md_cons_align |
3910 | md_cons_align (nbytes); | |
3911 | #endif | |
3912 | ||
3913 | c = 0; | |
3914 | do | |
3915 | { | |
abd63a32 | 3916 | #ifdef TC_M68K |
252b5132 RH |
3917 | if (flag_m68k_mri) |
3918 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3919 | else | |
abd63a32 | 3920 | #endif |
fa94de6b | 3921 | { |
847d4311 NS |
3922 | if (*input_line_pointer == '"') |
3923 | { | |
3924 | as_bad (_("unexpected `\"' in expression")); | |
3925 | ignore_rest_of_line (); | |
3926 | return; | |
3927 | } | |
3928 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); | |
3929 | } | |
252b5132 RH |
3930 | |
3931 | if (rva) | |
3932 | { | |
3933 | if (exp.X_op == O_symbol) | |
3934 | exp.X_op = O_symbol_rva; | |
3935 | else | |
3936 | as_fatal (_("rva without symbol")); | |
3937 | } | |
3938 | emit_expr (&exp, (unsigned int) nbytes); | |
3939 | ++c; | |
3940 | } | |
3941 | while (*input_line_pointer++ == ','); | |
3942 | ||
3943 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3944 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3945 | or dcb.b. */ | |
3946 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3947 | mri_pending_align = 1; | |
3948 | ||
041ff4dd | 3949 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3950 | |
3951 | demand_empty_rest_of_line (); | |
3952 | ||
3953 | if (flag_mri) | |
3954 | mri_comment_end (stop, stopc); | |
3955 | } | |
3956 | ||
252b5132 | 3957 | void |
39e6acbd | 3958 | cons (int size) |
252b5132 RH |
3959 | { |
3960 | cons_worker (size, 0); | |
3961 | } | |
3962 | ||
041ff4dd | 3963 | void |
39e6acbd | 3964 | s_rva (int size) |
252b5132 RH |
3965 | { |
3966 | cons_worker (size, 1); | |
3967 | } | |
3968 | ||
05e9452c AM |
3969 | /* .reloc offset, reloc_name, symbol+addend. */ |
3970 | ||
3971 | void | |
3972 | s_reloc (int ignore ATTRIBUTE_UNUSED) | |
3973 | { | |
3974 | char *stop = NULL; | |
3975 | char stopc = 0; | |
3976 | expressionS exp; | |
3977 | char *r_name; | |
3978 | int c; | |
3979 | struct reloc_list *reloc; | |
3980 | ||
1e9cc1c2 | 3981 | reloc = (struct reloc_list *) xmalloc (sizeof (*reloc)); |
05e9452c AM |
3982 | |
3983 | if (flag_mri) | |
3984 | stop = mri_comment_field (&stopc); | |
3985 | ||
3986 | expression (&exp); | |
3987 | switch (exp.X_op) | |
3988 | { | |
3989 | case O_illegal: | |
3990 | case O_absent: | |
3991 | case O_big: | |
3992 | case O_register: | |
3993 | as_bad (_("missing or bad offset expression")); | |
3994 | goto err_out; | |
3995 | case O_constant: | |
3996 | exp.X_add_symbol = section_symbol (now_seg); | |
3997 | exp.X_op = O_symbol; | |
3998 | /* Fall thru */ | |
3999 | case O_symbol: | |
4000 | if (exp.X_add_number == 0) | |
4001 | { | |
4002 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
4003 | break; | |
4004 | } | |
4005 | /* Fall thru */ | |
4006 | default: | |
4007 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
4008 | break; | |
4009 | } | |
4010 | ||
4011 | SKIP_WHITESPACE (); | |
4012 | if (*input_line_pointer != ',') | |
4013 | { | |
4014 | as_bad (_("missing reloc type")); | |
4015 | goto err_out; | |
4016 | } | |
4017 | ||
4018 | ++input_line_pointer; | |
4019 | SKIP_WHITESPACE (); | |
4020 | r_name = input_line_pointer; | |
4021 | c = get_symbol_end (); | |
4022 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
4023 | *input_line_pointer = c; | |
4024 | if (reloc->u.a.howto == NULL) | |
4025 | { | |
4026 | as_bad (_("unrecognized reloc type")); | |
4027 | goto err_out; | |
4028 | } | |
4029 | ||
4030 | exp.X_op = O_absent; | |
4031 | SKIP_WHITESPACE (); | |
4032 | if (*input_line_pointer == ',') | |
4033 | { | |
4034 | ++input_line_pointer; | |
c188d0bb | 4035 | expression (&exp); |
05e9452c AM |
4036 | } |
4037 | switch (exp.X_op) | |
4038 | { | |
4039 | case O_illegal: | |
4040 | case O_big: | |
4041 | case O_register: | |
4042 | as_bad (_("bad reloc expression")); | |
4043 | err_out: | |
4044 | ignore_rest_of_line (); | |
4045 | free (reloc); | |
4046 | if (flag_mri) | |
4047 | mri_comment_end (stop, stopc); | |
4048 | return; | |
4049 | case O_absent: | |
4050 | reloc->u.a.sym = NULL; | |
4051 | reloc->u.a.addend = 0; | |
4052 | break; | |
4053 | case O_constant: | |
4054 | reloc->u.a.sym = NULL; | |
4055 | reloc->u.a.addend = exp.X_add_number; | |
4056 | break; | |
4057 | case O_symbol: | |
4058 | reloc->u.a.sym = exp.X_add_symbol; | |
4059 | reloc->u.a.addend = exp.X_add_number; | |
4060 | break; | |
4061 | default: | |
4062 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4063 | reloc->u.a.addend = 0; | |
4064 | break; | |
4065 | } | |
4066 | ||
4067 | as_where (&reloc->file, &reloc->line); | |
4068 | reloc->next = reloc_list; | |
4069 | reloc_list = reloc; | |
4070 | ||
4071 | demand_empty_rest_of_line (); | |
4072 | if (flag_mri) | |
4073 | mri_comment_end (stop, stopc); | |
4074 | } | |
4075 | ||
252b5132 RH |
4076 | /* Put the contents of expression EXP into the object file using |
4077 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4078 | ||
4079 | void | |
39e6acbd | 4080 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4081 | { |
4082 | operatorT op; | |
3d540e93 | 4083 | char *p; |
252b5132 RH |
4084 | valueT extra_digit = 0; |
4085 | ||
4086 | /* Don't do anything if we are going to make another pass. */ | |
4087 | if (need_pass_2) | |
4088 | return; | |
4089 | ||
4bc25101 | 4090 | frag_grow (nbytes); |
ed7d5d1a | 4091 | dot_value = frag_now_fix (); |
8e723a10 | 4092 | dot_frag = frag_now; |
ed7d5d1a | 4093 | |
252b5132 RH |
4094 | #ifndef NO_LISTING |
4095 | #ifdef OBJ_ELF | |
4096 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4097 | appear as a four byte positive constant in the .line section, | |
4098 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4099 | { | |
4100 | static int dwarf_line = -1; | |
4101 | ||
4102 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4103 | dwarf_line = -1; | |
4104 | else if (dwarf_line >= 0 | |
4105 | && nbytes == 2 | |
4106 | && exp->X_op == O_constant | |
4107 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4108 | listing_source_line ((unsigned int) dwarf_line); | |
4109 | else if (nbytes == 4 | |
4110 | && exp->X_op == O_constant | |
4111 | && exp->X_add_number >= 0) | |
4112 | dwarf_line = exp->X_add_number; | |
4113 | else | |
4114 | dwarf_line = -1; | |
4115 | } | |
4116 | ||
4117 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4118 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4119 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4120 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4121 | file. We look for that case here. */ | |
4122 | { | |
4123 | static int dwarf_file = 0; | |
4124 | ||
4125 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4126 | dwarf_file = 0; | |
4127 | else if (dwarf_file == 0 | |
4128 | && nbytes == 2 | |
4129 | && exp->X_op == O_constant | |
4130 | && exp->X_add_number == 0x11) | |
4131 | dwarf_file = 1; | |
4132 | else if (dwarf_file == 1 | |
4133 | && nbytes == 2 | |
4134 | && exp->X_op == O_constant | |
4135 | && exp->X_add_number == 0x12) | |
4136 | dwarf_file = 2; | |
4137 | else if (dwarf_file == 2 | |
4138 | && nbytes == 4) | |
4139 | dwarf_file = 3; | |
4140 | else if (dwarf_file == 3 | |
4141 | && nbytes == 2 | |
4142 | && exp->X_op == O_constant | |
4143 | && exp->X_add_number == 0x38) | |
4144 | dwarf_file = 4; | |
4145 | else | |
4146 | dwarf_file = 0; | |
4147 | ||
4148 | /* The variable dwarf_file_string tells stringer that the string | |
4149 | may be the name of the source file. */ | |
4150 | if (dwarf_file == 4) | |
4151 | dwarf_file_string = 1; | |
4152 | else | |
4153 | dwarf_file_string = 0; | |
4154 | } | |
4155 | #endif | |
4156 | #endif | |
4157 | ||
4158 | if (check_eh_frame (exp, &nbytes)) | |
4159 | return; | |
4160 | ||
4161 | op = exp->X_op; | |
4162 | ||
4163 | /* Allow `.word 0' in the absolute section. */ | |
4164 | if (now_seg == absolute_section) | |
4165 | { | |
4166 | if (op != O_constant || exp->X_add_number != 0) | |
4167 | as_bad (_("attempt to store value in absolute section")); | |
4168 | abs_section_offset += nbytes; | |
4169 | return; | |
4170 | } | |
4171 | ||
4172 | /* Handle a negative bignum. */ | |
4173 | if (op == O_uminus | |
4174 | && exp->X_add_number == 0 | |
2b47531b ILT |
4175 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4176 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4177 | { |
4178 | int i; | |
4179 | unsigned long carry; | |
4180 | ||
2b47531b | 4181 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4182 | |
4183 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4184 | carry = 1; | |
4185 | for (i = 0; i < exp->X_add_number; i++) | |
4186 | { | |
4187 | unsigned long next; | |
4188 | ||
041ff4dd | 4189 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4190 | & LITTLENUM_MASK) |
4191 | + carry); | |
4192 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4193 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4194 | } | |
4195 | ||
4196 | /* We can ignore any carry out, because it will be handled by | |
4197 | extra_digit if it is needed. */ | |
4198 | ||
4199 | extra_digit = (valueT) -1; | |
4200 | op = O_big; | |
4201 | } | |
4202 | ||
4203 | if (op == O_absent || op == O_illegal) | |
4204 | { | |
4205 | as_warn (_("zero assumed for missing expression")); | |
4206 | exp->X_add_number = 0; | |
4207 | op = O_constant; | |
4208 | } | |
4209 | else if (op == O_big && exp->X_add_number <= 0) | |
4210 | { | |
0e389e77 | 4211 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4212 | exp->X_add_number = 0; |
4213 | op = O_constant; | |
4214 | } | |
4215 | else if (op == O_register) | |
4216 | { | |
4217 | as_warn (_("register value used as expression")); | |
4218 | op = O_constant; | |
4219 | } | |
4220 | ||
4221 | p = frag_more ((int) nbytes); | |
4222 | ||
4223 | #ifndef WORKING_DOT_WORD | |
4224 | /* If we have the difference of two symbols in a word, save it on | |
4225 | the broken_words list. See the code in write.c. */ | |
4226 | if (op == O_subtract && nbytes == 2) | |
4227 | { | |
4228 | struct broken_word *x; | |
4229 | ||
4230 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
4231 | x->next_broken_word = broken_words; | |
4232 | broken_words = x; | |
4233 | x->seg = now_seg; | |
4234 | x->subseg = now_subseg; | |
4235 | x->frag = frag_now; | |
4236 | x->word_goes_here = p; | |
4237 | x->dispfrag = 0; | |
4238 | x->add = exp->X_add_symbol; | |
4239 | x->sub = exp->X_op_symbol; | |
4240 | x->addnum = exp->X_add_number; | |
4241 | x->added = 0; | |
dc59a897 | 4242 | x->use_jump = 0; |
252b5132 RH |
4243 | new_broken_words++; |
4244 | return; | |
4245 | } | |
4246 | #endif | |
4247 | ||
4248 | /* If we have an integer, but the number of bytes is too large to | |
4249 | pass to md_number_to_chars, handle it as a bignum. */ | |
4250 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4251 | { | |
e5604d79 | 4252 | extra_digit = exp->X_unsigned ? 0 : -1; |
956a6ba3 | 4253 | convert_to_bignum (exp, !exp->X_unsigned); |
e5604d79 | 4254 | op = O_big; |
252b5132 RH |
4255 | } |
4256 | ||
4257 | if (op == O_constant) | |
4258 | { | |
3d540e93 NC |
4259 | valueT get; |
4260 | valueT use; | |
4261 | valueT mask; | |
252b5132 | 4262 | valueT hibit; |
3d540e93 | 4263 | valueT unmask; |
252b5132 RH |
4264 | |
4265 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4266 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4267 | if (nbytes >= sizeof (valueT)) |
4268 | { | |
4269 | mask = 0; | |
4270 | if (nbytes > sizeof (valueT)) | |
4271 | hibit = 0; | |
4272 | else | |
4273 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4274 | } | |
4275 | else | |
4276 | { | |
041ff4dd | 4277 | /* Don't store these bits. */ |
252b5132 RH |
4278 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4279 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4280 | } | |
4281 | ||
041ff4dd | 4282 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4283 | |
4284 | #ifdef NEVER | |
4285 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4286 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4287 | #endif |
4288 | ||
4289 | get = exp->X_add_number; | |
4290 | use = get & unmask; | |
4291 | if ((get & mask) != 0 | |
4292 | && ((get & mask) != mask | |
4293 | || (get & hibit) == 0)) | |
041ff4dd | 4294 | { /* Leading bits contain both 0s & 1s. */ |
b6ac5419 | 4295 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4296 | #ifndef __MSVCRT__ |
5c612369 NC |
4297 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4298 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4299 | #else |
4300 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4301 | (unsigned long long) get, (unsigned long long) use); | |
4302 | #endif | |
b6ac5419 AM |
4303 | #else |
4304 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4305 | (unsigned long) get, (unsigned long) use); | |
4306 | #endif | |
252b5132 | 4307 | } |
041ff4dd | 4308 | /* Put bytes in right order. */ |
252b5132 RH |
4309 | md_number_to_chars (p, use, (int) nbytes); |
4310 | } | |
4311 | else if (op == O_big) | |
4312 | { | |
4313 | unsigned int size; | |
4314 | LITTLENUM_TYPE *nums; | |
4315 | ||
252b5132 RH |
4316 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4317 | if (nbytes < size) | |
4318 | { | |
93d90f46 AM |
4319 | int i = nbytes / CHARS_PER_LITTLENUM; |
4320 | if (i != 0) | |
4321 | { | |
4322 | LITTLENUM_TYPE sign = 0; | |
4323 | if ((generic_bignum[--i] | |
4324 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4325 | sign = ~(LITTLENUM_TYPE) 0; | |
4326 | while (++i < exp->X_add_number) | |
4327 | if (generic_bignum[i] != sign) | |
4328 | break; | |
4329 | } | |
4330 | if (i < exp->X_add_number) | |
4331 | as_warn (_("bignum truncated to %d bytes"), nbytes); | |
252b5132 RH |
4332 | size = nbytes; |
4333 | } | |
4334 | ||
93d90f46 AM |
4335 | if (nbytes == 1) |
4336 | { | |
4337 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4338 | return; | |
4339 | } | |
4340 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4341 | ||
252b5132 RH |
4342 | if (target_big_endian) |
4343 | { | |
4344 | while (nbytes > size) | |
4345 | { | |
4346 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4347 | nbytes -= CHARS_PER_LITTLENUM; | |
4348 | p += CHARS_PER_LITTLENUM; | |
4349 | } | |
4350 | ||
4351 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4352 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4353 | { |
4354 | --nums; | |
4355 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4356 | size -= CHARS_PER_LITTLENUM; | |
4357 | p += CHARS_PER_LITTLENUM; | |
4358 | } | |
4359 | } | |
4360 | else | |
4361 | { | |
4362 | nums = generic_bignum; | |
ceac3f62 | 4363 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4364 | { |
4365 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4366 | ++nums; | |
4367 | size -= CHARS_PER_LITTLENUM; | |
4368 | p += CHARS_PER_LITTLENUM; | |
4369 | nbytes -= CHARS_PER_LITTLENUM; | |
4370 | } | |
4371 | ||
ceac3f62 | 4372 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4373 | { |
4374 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4375 | nbytes -= CHARS_PER_LITTLENUM; | |
4376 | p += CHARS_PER_LITTLENUM; | |
4377 | } | |
4378 | } | |
4379 | } | |
4380 | else | |
7ddd14de BW |
4381 | emit_expr_fix (exp, nbytes, frag_now, p); |
4382 | } | |
4383 | ||
4384 | void | |
4385 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p) | |
4386 | { | |
4387 | memset (p, 0, nbytes); | |
252b5132 | 4388 | |
7ddd14de | 4389 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4390 | |
252b5132 | 4391 | #ifdef TC_CONS_FIX_NEW |
7ddd14de | 4392 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal, nbytes, exp); |
252b5132 | 4393 | #else |
7ddd14de BW |
4394 | { |
4395 | bfd_reloc_code_real_type r; | |
252b5132 | 4396 | |
7ddd14de BW |
4397 | switch (nbytes) |
4398 | { | |
4399 | case 1: | |
4400 | r = BFD_RELOC_8; | |
4401 | break; | |
4402 | case 2: | |
4403 | r = BFD_RELOC_16; | |
4404 | break; | |
d4f4f3fb AM |
4405 | case 3: |
4406 | r = BFD_RELOC_24; | |
4407 | break; | |
7ddd14de BW |
4408 | case 4: |
4409 | r = BFD_RELOC_32; | |
4410 | break; | |
4411 | case 8: | |
4412 | r = BFD_RELOC_64; | |
4413 | break; | |
4414 | default: | |
4415 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
4416 | r = BFD_RELOC_32; | |
4417 | break; | |
252b5132 | 4418 | } |
7ddd14de BW |
4419 | fix_new_exp (frag, p - frag->fr_literal, (int) nbytes, exp, |
4420 | 0, r); | |
4421 | } | |
252b5132 | 4422 | #endif |
252b5132 RH |
4423 | } |
4424 | \f | |
4425 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
4426 | ||
4427 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
4428 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
4429 | then pack them all together. We do a little better in that we allow | |
4430 | them in words, longs, etc. and we'll pack them in target byte order | |
4431 | for you. | |
4432 | ||
47eebc20 | 4433 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
4434 | entirely fit, put it in the next unit. Overflowing the bitfield is |
4435 | explicitly *not* even a warning. The bitwidth should be considered | |
4436 | a "mask". | |
4437 | ||
4438 | To use this function the tc-XXX.h file should define | |
4439 | BITFIELD_CONS_EXPRESSIONS. */ | |
4440 | ||
041ff4dd | 4441 | static void |
252b5132 RH |
4442 | parse_bitfield_cons (exp, nbytes) |
4443 | expressionS *exp; | |
4444 | unsigned int nbytes; | |
4445 | { | |
4446 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
4447 | char *hold = input_line_pointer; | |
4448 | ||
4449 | (void) expression (exp); | |
4450 | ||
4451 | if (*input_line_pointer == ':') | |
041ff4dd NC |
4452 | { |
4453 | /* Bitfields. */ | |
252b5132 RH |
4454 | long value = 0; |
4455 | ||
4456 | for (;;) | |
4457 | { | |
4458 | unsigned long width; | |
4459 | ||
4460 | if (*input_line_pointer != ':') | |
4461 | { | |
4462 | input_line_pointer = hold; | |
4463 | break; | |
041ff4dd | 4464 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
4465 | |
4466 | /* In the general case, we can't allow | |
4467 | full expressions with symbol | |
4468 | differences and such. The relocation | |
4469 | entries for symbols not defined in this | |
4470 | assembly would require arbitrary field | |
4471 | widths, positions, and masks which most | |
4472 | of our current object formats don't | |
4473 | support. | |
4474 | ||
4475 | In the specific case where a symbol | |
4476 | *is* defined in this assembly, we | |
4477 | *could* build fixups and track it, but | |
4478 | this could lead to confusion for the | |
4479 | backends. I'm lazy. I'll take any | |
4480 | SEG_ABSOLUTE. I think that means that | |
4481 | you can use a previous .set or | |
041ff4dd | 4482 | .equ type symbol. xoxorich. */ |
252b5132 RH |
4483 | |
4484 | if (exp->X_op == O_absent) | |
4485 | { | |
4486 | as_warn (_("using a bit field width of zero")); | |
4487 | exp->X_add_number = 0; | |
4488 | exp->X_op = O_constant; | |
041ff4dd | 4489 | } /* Implied zero width bitfield. */ |
252b5132 RH |
4490 | |
4491 | if (exp->X_op != O_constant) | |
4492 | { | |
4493 | *input_line_pointer = '\0'; | |
4494 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
4495 | *input_line_pointer = ':'; | |
4496 | demand_empty_rest_of_line (); | |
4497 | return; | |
041ff4dd | 4498 | } /* Too complex. */ |
252b5132 RH |
4499 | |
4500 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
4501 | { | |
4502 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
4503 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
4504 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 4505 | } /* Too big. */ |
252b5132 RH |
4506 | |
4507 | if (width > bits_available) | |
4508 | { | |
4509 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
4510 | input_line_pointer = hold; | |
4511 | exp->X_add_number = value; | |
4512 | break; | |
041ff4dd | 4513 | } /* Won't fit. */ |
252b5132 | 4514 | |
ef99799a KH |
4515 | /* Skip ':'. */ |
4516 | hold = ++input_line_pointer; | |
252b5132 RH |
4517 | |
4518 | (void) expression (exp); | |
4519 | if (exp->X_op != O_constant) | |
4520 | { | |
4521 | char cache = *input_line_pointer; | |
4522 | ||
4523 | *input_line_pointer = '\0'; | |
4524 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
4525 | *input_line_pointer = cache; | |
4526 | demand_empty_rest_of_line (); | |
4527 | return; | |
041ff4dd | 4528 | } /* Too complex. */ |
252b5132 RH |
4529 | |
4530 | value |= ((~(-1 << width) & exp->X_add_number) | |
4531 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
4532 | ||
4533 | if ((bits_available -= width) == 0 | |
4534 | || is_it_end_of_statement () | |
4535 | || *input_line_pointer != ',') | |
4536 | { | |
4537 | break; | |
041ff4dd | 4538 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4539 | |
4540 | hold = ++input_line_pointer; | |
4541 | (void) expression (exp); | |
041ff4dd | 4542 | } |
252b5132 RH |
4543 | |
4544 | exp->X_add_number = value; | |
4545 | exp->X_op = O_constant; | |
4546 | exp->X_unsigned = 1; | |
956a6ba3 | 4547 | exp->X_extrabit = 0; |
041ff4dd NC |
4548 | } |
4549 | } | |
252b5132 RH |
4550 | |
4551 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4552 | \f | |
4553 | /* Handle an MRI style string expression. */ | |
4554 | ||
abd63a32 | 4555 | #ifdef TC_M68K |
252b5132 RH |
4556 | static void |
4557 | parse_mri_cons (exp, nbytes) | |
4558 | expressionS *exp; | |
4559 | unsigned int nbytes; | |
4560 | { | |
4561 | if (*input_line_pointer != '\'' | |
4562 | && (input_line_pointer[1] != '\'' | |
4563 | || (*input_line_pointer != 'A' | |
4564 | && *input_line_pointer != 'E'))) | |
4565 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
4566 | else | |
4567 | { | |
4568 | unsigned int scan; | |
4569 | unsigned int result = 0; | |
4570 | ||
4571 | /* An MRI style string. Cut into as many bytes as will fit into | |
4572 | a nbyte chunk, left justify if necessary, and separate with | |
4573 | commas so we can try again later. */ | |
4574 | if (*input_line_pointer == 'A') | |
4575 | ++input_line_pointer; | |
4576 | else if (*input_line_pointer == 'E') | |
4577 | { | |
4578 | as_bad (_("EBCDIC constants are not supported")); | |
4579 | ++input_line_pointer; | |
4580 | } | |
4581 | ||
4582 | input_line_pointer++; | |
4583 | for (scan = 0; scan < nbytes; scan++) | |
4584 | { | |
4585 | if (*input_line_pointer == '\'') | |
4586 | { | |
4587 | if (input_line_pointer[1] == '\'') | |
4588 | { | |
4589 | input_line_pointer++; | |
4590 | } | |
4591 | else | |
4592 | break; | |
4593 | } | |
4594 | result = (result << 8) | (*input_line_pointer++); | |
4595 | } | |
4596 | ||
041ff4dd | 4597 | /* Left justify. */ |
252b5132 RH |
4598 | while (scan < nbytes) |
4599 | { | |
4600 | result <<= 8; | |
4601 | scan++; | |
4602 | } | |
f0e652b4 | 4603 | |
041ff4dd | 4604 | /* Create correct expression. */ |
252b5132 RH |
4605 | exp->X_op = O_constant; |
4606 | exp->X_add_number = result; | |
f0e652b4 | 4607 | |
041ff4dd | 4608 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4609 | if (input_line_pointer[0] != '\'' || |
4610 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4611 | { | |
4612 | input_line_pointer -= 2; | |
4613 | input_line_pointer[0] = ','; | |
4614 | input_line_pointer[1] = '\''; | |
4615 | } | |
4616 | else | |
4617 | input_line_pointer++; | |
4618 | } | |
4619 | } | |
abd63a32 | 4620 | #endif /* TC_M68K */ |
252b5132 RH |
4621 | \f |
4622 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4623 | ||
4624 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4625 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4626 | object file COUNT times. | |
4627 | ||
4628 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4629 | ||
4630 | static void | |
4631 | parse_repeat_cons (exp, nbytes) | |
4632 | expressionS *exp; | |
4633 | unsigned int nbytes; | |
4634 | { | |
4635 | expressionS count; | |
3d540e93 | 4636 | int i; |
252b5132 RH |
4637 | |
4638 | expression (exp); | |
4639 | ||
4640 | if (*input_line_pointer != ':') | |
4641 | { | |
4642 | /* No repeat count. */ | |
4643 | return; | |
4644 | } | |
4645 | ||
4646 | ++input_line_pointer; | |
4647 | expression (&count); | |
4648 | if (count.X_op != O_constant | |
4649 | || count.X_add_number <= 0) | |
4650 | { | |
0e389e77 | 4651 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4652 | return; |
4653 | } | |
4654 | ||
4655 | /* The cons function is going to output this expression once. So we | |
4656 | output it count - 1 times. */ | |
4657 | for (i = count.X_add_number - 1; i > 0; i--) | |
4658 | emit_expr (exp, nbytes); | |
4659 | } | |
4660 | ||
4661 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4662 | \f | |
4663 | /* Parse a floating point number represented as a hex constant. This | |
4664 | permits users to specify the exact bits they want in the floating | |
4665 | point number. */ | |
4666 | ||
4667 | static int | |
39e6acbd | 4668 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4669 | { |
4670 | int length; | |
4671 | int i; | |
4672 | ||
4673 | switch (float_type) | |
4674 | { | |
4675 | case 'f': | |
4676 | case 'F': | |
4677 | case 's': | |
4678 | case 'S': | |
4679 | length = 4; | |
4680 | break; | |
4681 | ||
4682 | case 'd': | |
4683 | case 'D': | |
4684 | case 'r': | |
4685 | case 'R': | |
4686 | length = 8; | |
4687 | break; | |
4688 | ||
4689 | case 'x': | |
4690 | case 'X': | |
4691 | length = 12; | |
4692 | break; | |
4693 | ||
4694 | case 'p': | |
4695 | case 'P': | |
4696 | length = 12; | |
4697 | break; | |
4698 | ||
4699 | default: | |
0e389e77 | 4700 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4701 | return -1; |
4702 | } | |
4703 | ||
4704 | /* It would be nice if we could go through expression to parse the | |
4705 | hex constant, but if we get a bignum it's a pain to sort it into | |
4706 | the buffer correctly. */ | |
4707 | i = 0; | |
4708 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4709 | { | |
4710 | int d; | |
4711 | ||
4712 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4713 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4714 | if (*input_line_pointer == '_') |
4715 | { | |
4716 | ++input_line_pointer; | |
4717 | continue; | |
4718 | } | |
4719 | ||
4720 | if (i >= length) | |
4721 | { | |
0e389e77 | 4722 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4723 | return -1; |
4724 | } | |
4725 | d = hex_value (*input_line_pointer) << 4; | |
4726 | ++input_line_pointer; | |
4727 | while (*input_line_pointer == '_') | |
4728 | ++input_line_pointer; | |
4729 | if (hex_p (*input_line_pointer)) | |
4730 | { | |
4731 | d += hex_value (*input_line_pointer); | |
4732 | ++input_line_pointer; | |
4733 | } | |
4734 | if (target_big_endian) | |
4735 | bytes[i] = d; | |
4736 | else | |
4737 | bytes[length - i - 1] = d; | |
4738 | ++i; | |
4739 | } | |
4740 | ||
4741 | if (i < length) | |
4742 | { | |
4743 | if (target_big_endian) | |
4744 | memset (bytes + i, 0, length - i); | |
4745 | else | |
4746 | memset (bytes, 0, length - i); | |
4747 | } | |
4748 | ||
4749 | return length; | |
4750 | } | |
4751 | ||
d6415f6c | 4752 | /* float_cons() |
f0e652b4 | 4753 | |
041ff4dd NC |
4754 | CONStruct some more frag chars of .floats .ffloats etc. |
4755 | Makes 0 or more new frags. | |
4756 | If need_pass_2 == 1, no frags are emitted. | |
4757 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4758 | |
041ff4dd NC |
4759 | A floating constant is defined by atof_generic(), except it is preceded |
4760 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4761 | reading, I decided to be incompatible. This always tries to give you | |
4762 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4763 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4764 | a choice of 2 flavours of noise according to which of 2 floating-point |
4765 | scanners you directed AS to use. | |
f0e652b4 | 4766 | |
041ff4dd | 4767 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4768 | |
4769 | void | |
39e6acbd | 4770 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4771 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4772 | { |
3d540e93 | 4773 | char *p; |
041ff4dd | 4774 | int length; /* Number of chars in an object. */ |
3d540e93 | 4775 | char *err; /* Error from scanning floating literal. */ |
252b5132 RH |
4776 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4777 | ||
4778 | if (is_it_end_of_statement ()) | |
4779 | { | |
4780 | demand_empty_rest_of_line (); | |
4781 | return; | |
4782 | } | |
4783 | ||
4784 | #ifdef md_flush_pending_output | |
4785 | md_flush_pending_output (); | |
4786 | #endif | |
4787 | ||
cc3f603a JM |
4788 | #ifdef md_cons_align |
4789 | md_cons_align (1); | |
4790 | #endif | |
4791 | ||
252b5132 RH |
4792 | do |
4793 | { | |
041ff4dd | 4794 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4795 | SKIP_WHITESPACE (); |
4796 | ||
4797 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4798 | letter is legal. Someone may invent a "z" format and this routine |
4799 | has no use for such information. Lusers beware: you get | |
4800 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4801 | if (input_line_pointer[0] == '0' |
3882b010 | 4802 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4803 | input_line_pointer += 2; |
4804 | ||
4805 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4806 | point with the exact digits specified. */ |
252b5132 RH |
4807 | if (input_line_pointer[0] == ':') |
4808 | { | |
4809 | ++input_line_pointer; | |
4810 | length = hex_float (float_type, temp); | |
4811 | if (length < 0) | |
4812 | { | |
4813 | ignore_rest_of_line (); | |
4814 | return; | |
4815 | } | |
4816 | } | |
4817 | else | |
4818 | { | |
4819 | err = md_atof (float_type, temp, &length); | |
4820 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4821 | know (err != NULL || length > 0); |
252b5132 RH |
4822 | if (err) |
4823 | { | |
0e389e77 | 4824 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4825 | ignore_rest_of_line (); |
4826 | return; | |
4827 | } | |
4828 | } | |
4829 | ||
4830 | if (!need_pass_2) | |
4831 | { | |
4832 | int count; | |
4833 | ||
4834 | count = 1; | |
4835 | ||
4836 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4837 | if (*input_line_pointer == ':') | |
4838 | { | |
4839 | expressionS count_exp; | |
4840 | ||
4841 | ++input_line_pointer; | |
4842 | expression (&count_exp); | |
f0e652b4 | 4843 | |
252b5132 RH |
4844 | if (count_exp.X_op != O_constant |
4845 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4846 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4847 | else |
4848 | count = count_exp.X_add_number; | |
4849 | } | |
4850 | #endif | |
4851 | ||
4852 | while (--count >= 0) | |
4853 | { | |
4854 | p = frag_more (length); | |
4855 | memcpy (p, temp, (unsigned int) length); | |
4856 | } | |
4857 | } | |
4858 | SKIP_WHITESPACE (); | |
4859 | } | |
4860 | while (*input_line_pointer++ == ','); | |
4861 | ||
041ff4dd NC |
4862 | /* Put terminator back into stream. */ |
4863 | --input_line_pointer; | |
252b5132 | 4864 | demand_empty_rest_of_line (); |
041ff4dd | 4865 | } |
252b5132 | 4866 | \f |
041ff4dd | 4867 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4868 | |
4869 | static inline int | |
39e6acbd | 4870 | sizeof_sleb128 (offsetT value) |
252b5132 | 4871 | { |
3d540e93 NC |
4872 | int size = 0; |
4873 | unsigned byte; | |
252b5132 RH |
4874 | |
4875 | do | |
4876 | { | |
4877 | byte = (value & 0x7f); | |
4878 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4879 | Fortunately, we can structure things so that the extra work reduces | |
4880 | to a noop on systems that do things "properly". */ | |
4881 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4882 | size += 1; | |
4883 | } | |
4884 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4885 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4886 | ||
4887 | return size; | |
4888 | } | |
4889 | ||
4890 | static inline int | |
39e6acbd | 4891 | sizeof_uleb128 (valueT value) |
252b5132 | 4892 | { |
3d540e93 | 4893 | int size = 0; |
252b5132 RH |
4894 | |
4895 | do | |
4896 | { | |
252b5132 RH |
4897 | value >>= 7; |
4898 | size += 1; | |
4899 | } | |
4900 | while (value != 0); | |
4901 | ||
4902 | return size; | |
4903 | } | |
4904 | ||
4905 | int | |
39e6acbd | 4906 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4907 | { |
4908 | if (sign) | |
4909 | return sizeof_sleb128 ((offsetT) value); | |
4910 | else | |
4911 | return sizeof_uleb128 (value); | |
4912 | } | |
4913 | ||
4914 | /* Output a LEB128 value. */ | |
4915 | ||
4916 | static inline int | |
39e6acbd | 4917 | output_sleb128 (char *p, offsetT value) |
252b5132 | 4918 | { |
3d540e93 NC |
4919 | char *orig = p; |
4920 | int more; | |
252b5132 RH |
4921 | |
4922 | do | |
4923 | { | |
4924 | unsigned byte = (value & 0x7f); | |
4925 | ||
4926 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4927 | Fortunately, we can structure things so that the extra work reduces | |
4928 | to a noop on systems that do things "properly". */ | |
4929 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4930 | ||
4931 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4932 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4933 | if (more) | |
4934 | byte |= 0x80; | |
4935 | ||
4936 | *p++ = byte; | |
4937 | } | |
4938 | while (more); | |
4939 | ||
4940 | return p - orig; | |
4941 | } | |
4942 | ||
4943 | static inline int | |
39e6acbd | 4944 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4945 | { |
4946 | char *orig = p; | |
4947 | ||
4948 | do | |
4949 | { | |
4950 | unsigned byte = (value & 0x7f); | |
4951 | value >>= 7; | |
4952 | if (value != 0) | |
4953 | /* More bytes to follow. */ | |
4954 | byte |= 0x80; | |
4955 | ||
4956 | *p++ = byte; | |
4957 | } | |
4958 | while (value != 0); | |
4959 | ||
4960 | return p - orig; | |
4961 | } | |
4962 | ||
4963 | int | |
39e6acbd | 4964 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4965 | { |
4966 | if (sign) | |
4967 | return output_sleb128 (p, (offsetT) value); | |
4968 | else | |
4969 | return output_uleb128 (p, value); | |
4970 | } | |
4971 | ||
4972 | /* Do the same for bignums. We combine sizeof with output here in that | |
4973 | we don't output for NULL values of P. It isn't really as critical as | |
4974 | for "normal" values that this be streamlined. */ | |
4975 | ||
6d4d30bb | 4976 | static inline int |
39e6acbd | 4977 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4978 | { |
4979 | char *orig = p; | |
4980 | valueT val = 0; | |
4981 | int loaded = 0; | |
4982 | unsigned byte; | |
4983 | ||
4984 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4985 | while (size > 1 |
4986 | && bignum[size - 1] == LITTLENUM_MASK | |
4987 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4988 | size--; |
4989 | ||
4990 | do | |
4991 | { | |
e5604d79 RS |
4992 | /* OR in the next part of the littlenum. */ |
4993 | val |= (*bignum << loaded); | |
4994 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4995 | size--; | |
4996 | bignum++; | |
4997 | ||
4998 | /* Add bytes until there are less than 7 bits left in VAL | |
4999 | or until every non-sign bit has been written. */ | |
5000 | do | |
252b5132 | 5001 | { |
e5604d79 RS |
5002 | byte = val & 0x7f; |
5003 | loaded -= 7; | |
5004 | val >>= 7; | |
5005 | if (size > 0 | |
5006 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 5007 | byte |= 0x80; |
e5604d79 RS |
5008 | |
5009 | if (orig) | |
5010 | *p = byte; | |
5011 | p++; | |
252b5132 | 5012 | } |
e5604d79 RS |
5013 | while ((byte & 0x80) != 0 && loaded >= 7); |
5014 | } | |
5015 | while (size > 0); | |
252b5132 | 5016 | |
e5604d79 RS |
5017 | /* Mop up any left-over bits (of which there will be less than 7). */ |
5018 | if ((byte & 0x80) != 0) | |
5019 | { | |
5020 | /* Sign-extend VAL. */ | |
5021 | if (val & (1 << (loaded - 1))) | |
5022 | val |= ~0 << loaded; | |
252b5132 | 5023 | if (orig) |
e5604d79 | 5024 | *p = val & 0x7f; |
252b5132 RH |
5025 | p++; |
5026 | } | |
252b5132 RH |
5027 | |
5028 | return p - orig; | |
5029 | } | |
5030 | ||
6d4d30bb | 5031 | static inline int |
39e6acbd | 5032 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
5033 | { |
5034 | char *orig = p; | |
5035 | valueT val = 0; | |
5036 | int loaded = 0; | |
5037 | unsigned byte; | |
5038 | ||
5039 | /* Strip leading zeros off the bignum. */ | |
5040 | /* XXX: Is this needed? */ | |
041ff4dd | 5041 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
5042 | size--; |
5043 | ||
5044 | do | |
5045 | { | |
5046 | if (loaded < 7 && size > 0) | |
5047 | { | |
5048 | val |= (*bignum << loaded); | |
5049 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5050 | size--; | |
5051 | bignum++; | |
5052 | } | |
5053 | ||
5054 | byte = val & 0x7f; | |
5055 | loaded -= 7; | |
5056 | val >>= 7; | |
5057 | ||
5058 | if (size > 0 || val) | |
5059 | byte |= 0x80; | |
5060 | ||
5061 | if (orig) | |
5062 | *p = byte; | |
5063 | p++; | |
5064 | } | |
5065 | while (byte & 0x80); | |
5066 | ||
5067 | return p - orig; | |
5068 | } | |
5069 | ||
6d4d30bb | 5070 | static int |
39e6acbd | 5071 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
5072 | { |
5073 | if (sign) | |
5074 | return output_big_sleb128 (p, bignum, size); | |
5075 | else | |
5076 | return output_big_uleb128 (p, bignum, size); | |
5077 | } | |
5078 | ||
5079 | /* Generate the appropriate fragments for a given expression to emit a | |
5080 | leb128 value. */ | |
5081 | ||
87c245cc | 5082 | static void |
39e6acbd | 5083 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5084 | { |
5085 | operatorT op = exp->X_op; | |
b7712f8d | 5086 | unsigned int nbytes; |
252b5132 RH |
5087 | |
5088 | if (op == O_absent || op == O_illegal) | |
5089 | { | |
5090 | as_warn (_("zero assumed for missing expression")); | |
5091 | exp->X_add_number = 0; | |
5092 | op = O_constant; | |
5093 | } | |
5094 | else if (op == O_big && exp->X_add_number <= 0) | |
5095 | { | |
0e389e77 | 5096 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5097 | exp->X_add_number = 0; |
5098 | op = O_constant; | |
5099 | } | |
5100 | else if (op == O_register) | |
5101 | { | |
5102 | as_warn (_("register value used as expression")); | |
5103 | op = O_constant; | |
5104 | } | |
e5604d79 RS |
5105 | else if (op == O_constant |
5106 | && sign | |
956a6ba3 | 5107 | && (exp->X_add_number < 0) == !exp->X_extrabit) |
e5604d79 RS |
5108 | { |
5109 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5110 | doesn't reflect the sign of the original value. Convert EXP | |
5111 | to a correctly-extended bignum instead. */ | |
956a6ba3 | 5112 | convert_to_bignum (exp, exp->X_extrabit); |
e5604d79 RS |
5113 | op = O_big; |
5114 | } | |
252b5132 | 5115 | |
67a659f6 RH |
5116 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5117 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5118 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5119 | if (check_eh_frame (exp, &nbytes)) |
5120 | abort (); | |
5121 | ||
371b7465 RH |
5122 | /* Let the backend know that subsequent data may be byte aligned. */ |
5123 | #ifdef md_cons_align | |
5124 | md_cons_align (1); | |
5125 | #endif | |
5126 | ||
252b5132 RH |
5127 | if (op == O_constant) |
5128 | { | |
5129 | /* If we've got a constant, emit the thing directly right now. */ | |
5130 | ||
5131 | valueT value = exp->X_add_number; | |
5132 | int size; | |
5133 | char *p; | |
5134 | ||
5135 | size = sizeof_leb128 (value, sign); | |
5136 | p = frag_more (size); | |
5137 | output_leb128 (p, value, sign); | |
5138 | } | |
5139 | else if (op == O_big) | |
5140 | { | |
5141 | /* O_big is a different sort of constant. */ | |
5142 | ||
5143 | int size; | |
5144 | char *p; | |
5145 | ||
5146 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
5147 | p = frag_more (size); | |
5148 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
5149 | } | |
5150 | else | |
5151 | { | |
041ff4dd | 5152 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5153 | resolve things later. */ |
5154 | ||
041ff4dd | 5155 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5156 | make_expr_symbol (exp), 0, (char *) NULL); |
5157 | } | |
5158 | } | |
5159 | ||
5160 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5161 | ||
5162 | void | |
39e6acbd | 5163 | s_leb128 (int sign) |
252b5132 RH |
5164 | { |
5165 | expressionS exp; | |
5166 | ||
00bbdfe7 BW |
5167 | #ifdef md_flush_pending_output |
5168 | md_flush_pending_output (); | |
5169 | #endif | |
5170 | ||
041ff4dd NC |
5171 | do |
5172 | { | |
5173 | expression (&exp); | |
5174 | emit_leb128_expr (&exp, sign); | |
5175 | } | |
5176 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5177 | |
5178 | input_line_pointer--; | |
5179 | demand_empty_rest_of_line (); | |
5180 | } | |
5181 | \f | |
38a57ae7 NC |
5182 | static void |
5183 | stringer_append_char (int c, int bitsize) | |
5184 | { | |
5185 | if (!target_big_endian) | |
5186 | FRAG_APPEND_1_CHAR (c); | |
5187 | ||
5188 | switch (bitsize) | |
5189 | { | |
5190 | case 64: | |
5191 | FRAG_APPEND_1_CHAR (0); | |
5192 | FRAG_APPEND_1_CHAR (0); | |
5193 | FRAG_APPEND_1_CHAR (0); | |
5194 | FRAG_APPEND_1_CHAR (0); | |
5195 | /* Fall through. */ | |
5196 | case 32: | |
5197 | FRAG_APPEND_1_CHAR (0); | |
5198 | FRAG_APPEND_1_CHAR (0); | |
5199 | /* Fall through. */ | |
5200 | case 16: | |
5201 | FRAG_APPEND_1_CHAR (0); | |
5202 | /* Fall through. */ | |
5203 | case 8: | |
5204 | break; | |
5205 | default: | |
5206 | /* Called with invalid bitsize argument. */ | |
5207 | abort (); | |
5208 | break; | |
5209 | } | |
5210 | if (target_big_endian) | |
5211 | FRAG_APPEND_1_CHAR (c); | |
5212 | } | |
5213 | ||
5214 | /* Worker to do .ascii etc statements. | |
5215 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5216 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5217 | check it. |
5218 | Checks for end-of-line. | |
5219 | BITS_APPENDZERO says how many bits are in a target char. | |
5220 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5221 | |
5222 | void | |
38a57ae7 | 5223 | stringer (int bits_appendzero) |
252b5132 | 5224 | { |
38a57ae7 NC |
5225 | const int bitsize = bits_appendzero & ~7; |
5226 | const int append_zero = bits_appendzero & 1; | |
5227 | unsigned int c; | |
87975d2a | 5228 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5229 | char *start; |
87975d2a | 5230 | #endif |
252b5132 RH |
5231 | |
5232 | #ifdef md_flush_pending_output | |
5233 | md_flush_pending_output (); | |
5234 | #endif | |
5235 | ||
cc3f603a JM |
5236 | #ifdef md_cons_align |
5237 | md_cons_align (1); | |
5238 | #endif | |
5239 | ||
041ff4dd NC |
5240 | /* The following awkward logic is to parse ZERO or more strings, |
5241 | comma separated. Recall a string expression includes spaces | |
5242 | before the opening '\"' and spaces after the closing '\"'. | |
5243 | We fake a leading ',' if there is (supposed to be) | |
5244 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5245 | if (is_it_end_of_statement ()) |
5246 | { | |
041ff4dd NC |
5247 | c = 0; /* Skip loop. */ |
5248 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5249 | } |
5250 | else | |
5251 | { | |
041ff4dd | 5252 | c = ','; /* Do loop. */ |
252b5132 | 5253 | } |
8ac9ba6c NC |
5254 | /* If we have been switched into the abs_section then we |
5255 | will not have an obstack onto which we can hang strings. */ | |
5256 | if (now_seg == absolute_section) | |
5257 | { | |
5258 | as_bad (_("strings must be placed into a section")); | |
5259 | c = 0; | |
5260 | ignore_rest_of_line (); | |
5261 | } | |
d6415f6c | 5262 | |
252b5132 RH |
5263 | while (c == ',' || c == '<' || c == '"') |
5264 | { | |
5265 | SKIP_WHITESPACE (); | |
5266 | switch (*input_line_pointer) | |
5267 | { | |
5268 | case '\"': | |
041ff4dd | 5269 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5270 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5271 | start = input_line_pointer; |
87975d2a | 5272 | #endif |
38a57ae7 | 5273 | |
252b5132 | 5274 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5275 | stringer_append_char (c, bitsize); |
5276 | ||
252b5132 | 5277 | if (append_zero) |
38a57ae7 NC |
5278 | stringer_append_char (0, bitsize); |
5279 | ||
252b5132 RH |
5280 | know (input_line_pointer[-1] == '\"'); |
5281 | ||
87975d2a | 5282 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5283 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5284 | will emit .string with a filename in the .debug section |
5285 | after a sequence of constants. See the comment in | |
5286 | emit_expr for the sequence. emit_expr will set | |
5287 | dwarf_file_string to non-zero if this string might be a | |
5288 | source file name. */ | |
252b5132 RH |
5289 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5290 | dwarf_file_string = 0; | |
5291 | else if (dwarf_file_string) | |
5292 | { | |
5293 | c = input_line_pointer[-1]; | |
5294 | input_line_pointer[-1] = '\0'; | |
5295 | listing_source_file (start); | |
5296 | input_line_pointer[-1] = c; | |
5297 | } | |
252b5132 RH |
5298 | #endif |
5299 | ||
5300 | break; | |
5301 | case '<': | |
5302 | input_line_pointer++; | |
5303 | c = get_single_number (); | |
38a57ae7 | 5304 | stringer_append_char (c, bitsize); |
252b5132 | 5305 | if (*input_line_pointer != '>') |
38a57ae7 NC |
5306 | as_bad (_("expected <nn>")); |
5307 | ||
252b5132 RH |
5308 | input_line_pointer++; |
5309 | break; | |
5310 | case ',': | |
5311 | input_line_pointer++; | |
5312 | break; | |
5313 | } | |
5314 | SKIP_WHITESPACE (); | |
5315 | c = *input_line_pointer; | |
5316 | } | |
5317 | ||
5318 | demand_empty_rest_of_line (); | |
38a57ae7 | 5319 | } |
252b5132 RH |
5320 | \f |
5321 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5322 | high bits set. We'll probably also have trouble with | |
5323 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5324 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5325 | |
041ff4dd | 5326 | unsigned int |
39e6acbd | 5327 | next_char_of_string (void) |
252b5132 | 5328 | { |
3d540e93 | 5329 | unsigned int c; |
252b5132 RH |
5330 | |
5331 | c = *input_line_pointer++ & CHAR_MASK; | |
5332 | switch (c) | |
5333 | { | |
5334 | case '\"': | |
5335 | c = NOT_A_CHAR; | |
5336 | break; | |
5337 | ||
5338 | case '\n': | |
0e389e77 | 5339 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5340 | bump_line_counters (); |
5341 | break; | |
5342 | ||
5343 | #ifndef NO_STRING_ESCAPES | |
5344 | case '\\': | |
5345 | switch (c = *input_line_pointer++) | |
5346 | { | |
5347 | case 'b': | |
5348 | c = '\b'; | |
5349 | break; | |
5350 | ||
5351 | case 'f': | |
5352 | c = '\f'; | |
5353 | break; | |
5354 | ||
5355 | case 'n': | |
5356 | c = '\n'; | |
5357 | break; | |
5358 | ||
5359 | case 'r': | |
5360 | c = '\r'; | |
5361 | break; | |
5362 | ||
5363 | case 't': | |
5364 | c = '\t'; | |
5365 | break; | |
5366 | ||
5367 | case 'v': | |
5368 | c = '\013'; | |
5369 | break; | |
5370 | ||
5371 | case '\\': | |
5372 | case '"': | |
041ff4dd | 5373 | break; /* As itself. */ |
252b5132 RH |
5374 | |
5375 | case '0': | |
5376 | case '1': | |
5377 | case '2': | |
5378 | case '3': | |
5379 | case '4': | |
5380 | case '5': | |
5381 | case '6': | |
5382 | case '7': | |
5383 | case '8': | |
5384 | case '9': | |
5385 | { | |
5386 | long number; | |
5387 | int i; | |
5388 | ||
041ff4dd | 5389 | for (i = 0, number = 0; |
3882b010 | 5390 | ISDIGIT (c) && i < 3; |
041ff4dd | 5391 | c = *input_line_pointer++, i++) |
252b5132 RH |
5392 | { |
5393 | number = number * 8 + c - '0'; | |
5394 | } | |
f0e652b4 | 5395 | |
252b5132 RH |
5396 | c = number & 0xff; |
5397 | } | |
5398 | --input_line_pointer; | |
5399 | break; | |
5400 | ||
5401 | case 'x': | |
5402 | case 'X': | |
5403 | { | |
5404 | long number; | |
5405 | ||
5406 | number = 0; | |
5407 | c = *input_line_pointer++; | |
3882b010 | 5408 | while (ISXDIGIT (c)) |
252b5132 | 5409 | { |
3882b010 | 5410 | if (ISDIGIT (c)) |
252b5132 | 5411 | number = number * 16 + c - '0'; |
3882b010 | 5412 | else if (ISUPPER (c)) |
252b5132 RH |
5413 | number = number * 16 + c - 'A' + 10; |
5414 | else | |
5415 | number = number * 16 + c - 'a' + 10; | |
5416 | c = *input_line_pointer++; | |
5417 | } | |
5418 | c = number & 0xff; | |
5419 | --input_line_pointer; | |
5420 | } | |
5421 | break; | |
5422 | ||
5423 | case '\n': | |
041ff4dd | 5424 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5425 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5426 | c = '\n'; |
5427 | bump_line_counters (); | |
5428 | break; | |
5429 | ||
5430 | default: | |
5431 | ||
5432 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5433 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5434 | c = '?'; |
5435 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5436 | ||
5437 | break; | |
041ff4dd | 5438 | } |
252b5132 RH |
5439 | break; |
5440 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
5441 | ||
5442 | default: | |
5443 | break; | |
041ff4dd | 5444 | } |
252b5132 | 5445 | return (c); |
041ff4dd | 5446 | } |
252b5132 RH |
5447 | \f |
5448 | static segT | |
3d540e93 | 5449 | get_segmented_expression (expressionS *expP) |
252b5132 | 5450 | { |
3d540e93 | 5451 | segT retval; |
252b5132 RH |
5452 | |
5453 | retval = expression (expP); | |
5454 | if (expP->X_op == O_illegal | |
5455 | || expP->X_op == O_absent | |
5456 | || expP->X_op == O_big) | |
5457 | { | |
0e389e77 | 5458 | as_bad (_("expected address expression")); |
252b5132 RH |
5459 | expP->X_op = O_constant; |
5460 | expP->X_add_number = 0; | |
5461 | retval = absolute_section; | |
5462 | } | |
5463 | return retval; | |
5464 | } | |
5465 | ||
041ff4dd | 5466 | static segT |
3d540e93 | 5467 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5468 | { |
259af69e | 5469 | segT retval = get_segmented_expression (expP); |
252b5132 | 5470 | |
259af69e | 5471 | if (retval == undefined_section) |
252b5132 RH |
5472 | { |
5473 | /* There is no easy way to extract the undefined symbol from the | |
5474 | expression. */ | |
5475 | if (expP->X_add_symbol != NULL | |
5476 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5477 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5478 | S_GET_NAME (expP->X_add_symbol)); | |
5479 | else | |
5480 | as_warn (_("some symbol undefined; zero assumed")); | |
5481 | retval = absolute_section; | |
5482 | expP->X_op = O_constant; | |
5483 | expP->X_add_number = 0; | |
5484 | } | |
259af69e | 5485 | return retval; |
041ff4dd | 5486 | } |
252b5132 | 5487 | |
041ff4dd | 5488 | char /* Return terminator. */ |
39e6acbd | 5489 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5490 | { |
5491 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5492 | *val_pointer = (long) get_absolute_expression (); | |
5493 | return (*input_line_pointer++); | |
5494 | } | |
5495 | \f | |
041ff4dd NC |
5496 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5497 | Give a warning if that happens. */ | |
5498 | ||
252b5132 | 5499 | char * |
39e6acbd | 5500 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5501 | { |
3d540e93 | 5502 | char *s; |
252b5132 RH |
5503 | |
5504 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5505 | { | |
3d540e93 | 5506 | int len; |
252b5132 RH |
5507 | |
5508 | for (len = *len_pointer; len > 0; len--) | |
5509 | { | |
5510 | if (*s == 0) | |
5511 | { | |
5512 | s = 0; | |
5513 | len = 1; | |
5514 | *len_pointer = 0; | |
0e389e77 | 5515 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5516 | } |
5517 | } | |
5518 | } | |
f0e652b4 | 5519 | |
252b5132 RH |
5520 | return s; |
5521 | } | |
5522 | \f | |
041ff4dd NC |
5523 | /* Demand string, but return a safe (=private) copy of the string. |
5524 | Return NULL if we can't read a string here. */ | |
5525 | ||
252b5132 | 5526 | char * |
39e6acbd | 5527 | demand_copy_string (int *lenP) |
252b5132 | 5528 | { |
3d540e93 NC |
5529 | unsigned int c; |
5530 | int len; | |
252b5132 RH |
5531 | char *retval; |
5532 | ||
5533 | len = 0; | |
5534 | SKIP_WHITESPACE (); | |
5535 | if (*input_line_pointer == '\"') | |
5536 | { | |
041ff4dd | 5537 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5538 | |
5539 | while (is_a_char (c = next_char_of_string ())) | |
5540 | { | |
5541 | obstack_1grow (¬es, c); | |
5542 | len++; | |
5543 | } | |
5544 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5545 | null terminated string. */ |
252b5132 | 5546 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5547 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5548 | } |
5549 | else | |
5550 | { | |
c95b35a9 | 5551 | as_bad (_("missing string")); |
252b5132 RH |
5552 | retval = NULL; |
5553 | ignore_rest_of_line (); | |
5554 | } | |
5555 | *lenP = len; | |
5556 | return (retval); | |
041ff4dd | 5557 | } |
252b5132 | 5558 | \f |
041ff4dd | 5559 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5560 | |
041ff4dd | 5561 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5562 | |
041ff4dd NC |
5563 | Out: 1 if input_line_pointer->end-of-line. */ |
5564 | ||
5565 | int | |
39e6acbd | 5566 | is_it_end_of_statement (void) |
252b5132 RH |
5567 | { |
5568 | SKIP_WHITESPACE (); | |
5569 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5570 | } |
252b5132 | 5571 | |
041ff4dd | 5572 | void |
39e6acbd | 5573 | equals (char *sym_name, int reassign) |
252b5132 | 5574 | { |
252b5132 | 5575 | char *stop = NULL; |
fb25138b | 5576 | char stopc = 0; |
252b5132 RH |
5577 | |
5578 | input_line_pointer++; | |
5579 | if (*input_line_pointer == '=') | |
5580 | input_line_pointer++; | |
9497f5ac NC |
5581 | if (reassign < 0 && *input_line_pointer == '=') |
5582 | input_line_pointer++; | |
252b5132 RH |
5583 | |
5584 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5585 | input_line_pointer++; | |
5586 | ||
5587 | if (flag_mri) | |
5588 | stop = mri_comment_field (&stopc); | |
5589 | ||
9497f5ac | 5590 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5591 | |
5592 | if (flag_mri) | |
31d20a21 AM |
5593 | { |
5594 | demand_empty_rest_of_line (); | |
5595 | mri_comment_end (stop, stopc); | |
5596 | } | |
041ff4dd | 5597 | } |
252b5132 | 5598 | |
7e005732 NC |
5599 | /* .incbin -- include a file verbatim at the current location. */ |
5600 | ||
5601 | void | |
39e6acbd | 5602 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5603 | { |
5604 | FILE * binfile; | |
5605 | char * path; | |
5606 | char * filename; | |
5607 | char * binfrag; | |
5608 | long skip = 0; | |
5609 | long count = 0; | |
5610 | long bytes; | |
5611 | int len; | |
5612 | ||
5613 | #ifdef md_flush_pending_output | |
5614 | md_flush_pending_output (); | |
5615 | #endif | |
5616 | ||
cc3f603a JM |
5617 | #ifdef md_cons_align |
5618 | md_cons_align (1); | |
5619 | #endif | |
5620 | ||
7e005732 NC |
5621 | SKIP_WHITESPACE (); |
5622 | filename = demand_copy_string (& len); | |
5623 | if (filename == NULL) | |
5624 | return; | |
5625 | ||
5626 | SKIP_WHITESPACE (); | |
5627 | ||
5628 | /* Look for optional skip and count. */ | |
5629 | if (* input_line_pointer == ',') | |
5630 | { | |
5631 | ++ input_line_pointer; | |
5632 | skip = get_absolute_expression (); | |
5633 | ||
5634 | SKIP_WHITESPACE (); | |
5635 | ||
5636 | if (* input_line_pointer == ',') | |
5637 | { | |
5638 | ++ input_line_pointer; | |
5639 | ||
5640 | count = get_absolute_expression (); | |
5641 | if (count == 0) | |
5642 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5643 | ||
5644 | SKIP_WHITESPACE (); | |
5645 | } | |
5646 | } | |
5647 | ||
5648 | demand_empty_rest_of_line (); | |
5649 | ||
5650 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5651 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5652 | if (binfile == NULL) |
5653 | { | |
5654 | int i; | |
5655 | ||
1e9cc1c2 | 5656 | path = (char *) xmalloc ((unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5657 | |
5658 | for (i = 0; i < include_dir_count; i++) | |
5659 | { | |
5660 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5661 | ||
f740e790 | 5662 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5663 | if (binfile != NULL) |
5664 | break; | |
5665 | } | |
5666 | ||
5667 | if (binfile == NULL) | |
5668 | as_bad (_("file not found: %s"), filename); | |
5669 | } | |
5670 | else | |
5671 | path = xstrdup (filename); | |
5672 | ||
5673 | if (binfile) | |
5674 | { | |
f740e790 NC |
5675 | long file_len; |
5676 | ||
7e005732 NC |
5677 | register_dependency (path); |
5678 | ||
5679 | /* Compute the length of the file. */ | |
5680 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5681 | { | |
5682 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5683 | goto done; | |
5684 | } | |
f740e790 | 5685 | file_len = ftell (binfile); |
7e005732 | 5686 | |
c556cc9c | 5687 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5688 | if (count == 0) |
c556cc9c | 5689 | count = file_len - skip; |
7e005732 | 5690 | |
c556cc9c | 5691 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5692 | { |
c556cc9c | 5693 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5694 | skip, count, file_len); |
7e005732 NC |
5695 | goto done; |
5696 | } | |
5697 | ||
5698 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5699 | { | |
5700 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5701 | goto done; | |
5702 | } | |
5703 | ||
5704 | /* Allocate frag space and store file contents in it. */ | |
5705 | binfrag = frag_more (count); | |
5706 | ||
5707 | bytes = fread (binfrag, 1, count, binfile); | |
5708 | if (bytes < count) | |
5709 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5710 | path, bytes, count); | |
5711 | } | |
5712 | done: | |
5713 | if (binfile != NULL) | |
5714 | fclose (binfile); | |
5715 | if (path) | |
5716 | free (path); | |
5717 | } | |
5718 | ||
041ff4dd | 5719 | /* .include -- include a file at this point. */ |
252b5132 | 5720 | |
041ff4dd | 5721 | void |
39e6acbd | 5722 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5723 | { |
252b5132 RH |
5724 | char *filename; |
5725 | int i; | |
1e9cc1c2 | 5726 | FILE *try_file; |
252b5132 RH |
5727 | char *path; |
5728 | ||
041ff4dd | 5729 | if (!flag_m68k_mri) |
252b5132 RH |
5730 | { |
5731 | filename = demand_copy_string (&i); | |
5732 | if (filename == NULL) | |
5733 | { | |
5734 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5735 | called ignore_rest_of_line. */ |
252b5132 RH |
5736 | return; |
5737 | } | |
5738 | } | |
5739 | else | |
5740 | { | |
5741 | SKIP_WHITESPACE (); | |
5742 | i = 0; | |
041ff4dd | 5743 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5744 | && *input_line_pointer != ' ' |
5745 | && *input_line_pointer != '\t') | |
5746 | { | |
5747 | obstack_1grow (¬es, *input_line_pointer); | |
5748 | ++input_line_pointer; | |
5749 | ++i; | |
5750 | } | |
f0e652b4 | 5751 | |
252b5132 | 5752 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5753 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5754 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5755 | ++input_line_pointer; |
5756 | } | |
f0e652b4 | 5757 | |
252b5132 | 5758 | demand_empty_rest_of_line (); |
1e9cc1c2 | 5759 | path = (char *) xmalloc ((unsigned long) i |
fa94de6b | 5760 | + include_dir_maxlen + 5 /* slop */ ); |
f0e652b4 | 5761 | |
252b5132 RH |
5762 | for (i = 0; i < include_dir_count; i++) |
5763 | { | |
5764 | strcpy (path, include_dirs[i]); | |
5765 | strcat (path, "/"); | |
5766 | strcat (path, filename); | |
1e9cc1c2 | 5767 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 5768 | { |
1e9cc1c2 | 5769 | fclose (try_file); |
252b5132 RH |
5770 | goto gotit; |
5771 | } | |
5772 | } | |
f0e652b4 | 5773 | |
252b5132 RH |
5774 | free (path); |
5775 | path = filename; | |
5776 | gotit: | |
041ff4dd | 5777 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5778 | register_dependency (path); |
9f10757c | 5779 | input_scrub_insert_file (path); |
041ff4dd | 5780 | } |
252b5132 | 5781 | |
041ff4dd | 5782 | void |
39e6acbd | 5783 | add_include_dir (char *path) |
252b5132 RH |
5784 | { |
5785 | int i; | |
5786 | ||
5787 | if (include_dir_count == 0) | |
5788 | { | |
5789 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5790 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5791 | include_dir_count = 2; |
5792 | } | |
5793 | else | |
5794 | { | |
5795 | include_dir_count++; | |
041ff4dd NC |
5796 | include_dirs = |
5797 | (char **) realloc (include_dirs, | |
5798 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5799 | } |
5800 | ||
041ff4dd | 5801 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5802 | |
5803 | i = strlen (path); | |
5804 | if (i > include_dir_maxlen) | |
5805 | include_dir_maxlen = i; | |
041ff4dd | 5806 | } |
252b5132 RH |
5807 | \f |
5808 | /* Output debugging information to denote the source file. */ | |
5809 | ||
5810 | static void | |
39e6acbd | 5811 | generate_file_debug (void) |
252b5132 RH |
5812 | { |
5813 | if (debug_type == DEBUG_STABS) | |
5814 | stabs_generate_asm_file (); | |
5815 | } | |
5816 | ||
5817 | /* Output line number debugging information for the current source line. */ | |
5818 | ||
5819 | void | |
39e6acbd | 5820 | generate_lineno_debug (void) |
252b5132 | 5821 | { |
252b5132 RH |
5822 | switch (debug_type) |
5823 | { | |
5824 | case DEBUG_UNSPECIFIED: | |
5825 | case DEBUG_NONE: | |
4dc7ead9 | 5826 | case DEBUG_DWARF: |
252b5132 RH |
5827 | break; |
5828 | case DEBUG_STABS: | |
5829 | stabs_generate_asm_lineno (); | |
5830 | break; | |
5831 | case DEBUG_ECOFF: | |
5832 | ecoff_generate_asm_lineno (); | |
5833 | break; | |
252b5132 | 5834 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5835 | /* ??? We could here indicate to dwarf2dbg.c that something |
5836 | has changed. However, since there is additional backend | |
5837 | support that is required (calling dwarf2_emit_insn), we | |
5838 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5839 | break; |
5840 | } | |
5841 | } | |
5842 | ||
5843 | /* Output debugging information to mark a function entry point or end point. | |
5844 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5845 | ||
5846 | void | |
39e6acbd | 5847 | s_func (int end_p) |
252b5132 RH |
5848 | { |
5849 | do_s_func (end_p, NULL); | |
5850 | } | |
5851 | ||
5852 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5853 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5854 | ||
87c245cc | 5855 | static void |
39e6acbd | 5856 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5857 | { |
5858 | /* Record the current function so that we can issue an error message for | |
5859 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5860 | arguments. */ | |
5861 | static char *current_name; | |
5862 | static char *current_label; | |
5863 | ||
5864 | if (end_p) | |
5865 | { | |
5866 | if (current_name == NULL) | |
5867 | { | |
5868 | as_bad (_("missing .func")); | |
5869 | ignore_rest_of_line (); | |
5870 | return; | |
5871 | } | |
5872 | ||
5873 | if (debug_type == DEBUG_STABS) | |
5874 | stabs_generate_asm_endfunc (current_name, current_label); | |
5875 | ||
5876 | current_name = current_label = NULL; | |
5877 | } | |
5878 | else /* ! end_p */ | |
5879 | { | |
041ff4dd NC |
5880 | char *name, *label; |
5881 | char delim1, delim2; | |
252b5132 RH |
5882 | |
5883 | if (current_name != NULL) | |
5884 | { | |
5885 | as_bad (_(".endfunc missing for previous .func")); | |
5886 | ignore_rest_of_line (); | |
5887 | return; | |
5888 | } | |
5889 | ||
5890 | name = input_line_pointer; | |
5891 | delim1 = get_symbol_end (); | |
5892 | name = xstrdup (name); | |
5893 | *input_line_pointer = delim1; | |
5894 | SKIP_WHITESPACE (); | |
5895 | if (*input_line_pointer != ',') | |
5896 | { | |
5897 | if (default_prefix) | |
05f4ab67 AM |
5898 | { |
5899 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
5900 | as_fatal ("%s", xstrerror (errno)); | |
5901 | } | |
252b5132 RH |
5902 | else |
5903 | { | |
7be1c489 | 5904 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
5905 | /* Missing entry point, use function's name with the leading |
5906 | char prepended. */ | |
5907 | if (leading_char) | |
05f4ab67 AM |
5908 | { |
5909 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
5910 | as_fatal ("%s", xstrerror (errno)); | |
5911 | } | |
252b5132 RH |
5912 | else |
5913 | label = name; | |
5914 | } | |
5915 | } | |
5916 | else | |
5917 | { | |
5918 | ++input_line_pointer; | |
5919 | SKIP_WHITESPACE (); | |
5920 | label = input_line_pointer; | |
5921 | delim2 = get_symbol_end (); | |
5922 | label = xstrdup (label); | |
5923 | *input_line_pointer = delim2; | |
5924 | } | |
5925 | ||
5926 | if (debug_type == DEBUG_STABS) | |
5927 | stabs_generate_asm_func (name, label); | |
5928 | ||
5929 | current_name = name; | |
5930 | current_label = label; | |
5931 | } | |
5932 | ||
5933 | demand_empty_rest_of_line (); | |
5934 | } | |
5935 | \f | |
fa94de6b RM |
5936 | #ifdef HANDLE_BUNDLE |
5937 | ||
5938 | void | |
5939 | s_bundle_align_mode (int arg ATTRIBUTE_UNUSED) | |
5940 | { | |
5941 | unsigned int align = get_absolute_expression (); | |
5942 | SKIP_WHITESPACE (); | |
5943 | demand_empty_rest_of_line (); | |
5944 | ||
5945 | if (align > (unsigned int) TC_ALIGN_LIMIT) | |
5946 | as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"), | |
5947 | (unsigned int) TC_ALIGN_LIMIT); | |
5948 | ||
5949 | if (bundle_lock_frag != NULL) | |
5950 | { | |
5951 | as_bad (_("cannot change .bundle_align_mode inside .bundle_lock")); | |
5952 | return; | |
5953 | } | |
5954 | ||
5955 | bundle_align_p2 = align; | |
5956 | } | |
5957 | ||
5958 | void | |
5959 | s_bundle_lock (int arg ATTRIBUTE_UNUSED) | |
5960 | { | |
5961 | demand_empty_rest_of_line (); | |
5962 | ||
5963 | if (bundle_align_p2 == 0) | |
5964 | { | |
5965 | as_bad (_(".bundle_lock is meaningless without .bundle_align_mode")); | |
5966 | return; | |
5967 | } | |
5968 | ||
d416e51d | 5969 | if (bundle_lock_depth == 0) |
fa94de6b | 5970 | { |
d416e51d RM |
5971 | bundle_lock_frchain = frchain_now; |
5972 | bundle_lock_frag = start_bundle (); | |
fa94de6b | 5973 | } |
d416e51d | 5974 | ++bundle_lock_depth; |
fa94de6b RM |
5975 | } |
5976 | ||
5977 | void | |
5978 | s_bundle_unlock (int arg ATTRIBUTE_UNUSED) | |
5979 | { | |
5980 | unsigned int size; | |
5981 | ||
5982 | demand_empty_rest_of_line (); | |
5983 | ||
5984 | if (bundle_lock_frag == NULL) | |
5985 | { | |
5986 | as_bad (_(".bundle_unlock without preceding .bundle_lock")); | |
5987 | return; | |
5988 | } | |
5989 | ||
5990 | gas_assert (bundle_align_p2 > 0); | |
5991 | ||
d416e51d RM |
5992 | gas_assert (bundle_lock_depth > 0); |
5993 | if (--bundle_lock_depth > 0) | |
5994 | return; | |
5995 | ||
fa94de6b RM |
5996 | size = pending_bundle_size (bundle_lock_frag); |
5997 | ||
5998 | if (size > (1U << bundle_align_p2)) | |
5999 | as_bad (_(".bundle_lock sequence is %u bytes, but bundle size only %u"), | |
6000 | size, 1 << bundle_align_p2); | |
6001 | else | |
6002 | finish_bundle (bundle_lock_frag, size); | |
6003 | ||
6004 | bundle_lock_frag = NULL; | |
6005 | bundle_lock_frchain = NULL; | |
6006 | } | |
6007 | ||
6008 | #endif /* HANDLE_BUNDLE */ | |
6009 | \f | |
041ff4dd | 6010 | void |
39e6acbd | 6011 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6012 | { |
40a4d956 | 6013 | ignore_rest_of_line (); |
252b5132 RH |
6014 | } |
6015 | ||
252b5132 | 6016 | void |
39e6acbd | 6017 | read_print_statistics (FILE *file) |
252b5132 RH |
6018 | { |
6019 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
6020 | } | |
6021 | ||
041ff4dd NC |
6022 | /* Inserts the given line into the input stream. |
6023 | ||
9f10757c TW |
6024 | This call avoids macro/conditionals nesting checking, since the contents of |
6025 | the line are assumed to replace the contents of a line already scanned. | |
6026 | ||
47eebc20 | 6027 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
6028 | called by md_start_line_hook(). The given line is assumed to already be |
6029 | properly scrubbed. */ | |
6030 | ||
6031 | void | |
39e6acbd | 6032 | input_scrub_insert_line (const char *line) |
9f10757c TW |
6033 | { |
6034 | sb newline; | |
d2ae702c L |
6035 | size_t len = strlen (line); |
6036 | sb_build (&newline, len); | |
6037 | sb_add_buffer (&newline, line, len); | |
9f10757c TW |
6038 | input_scrub_include_sb (&newline, input_line_pointer, 0); |
6039 | sb_kill (&newline); | |
6040 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6041 | } | |
6042 | ||
6043 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 6044 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
6045 | |
6046 | void | |
39e6acbd | 6047 | input_scrub_insert_file (char *path) |
9f10757c TW |
6048 | { |
6049 | input_scrub_include_file (path, input_line_pointer); | |
6050 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6051 | } | |
40a4d956 JB |
6052 | |
6053 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
6054 | ||
6055 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
6056 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
6057 | #endif | |
6058 | ||
6059 | static char * | |
7592cfd7 NC |
6060 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
6061 | int in_macro) | |
40a4d956 JB |
6062 | { |
6063 | char inquote = '\0'; | |
6064 | int inescape = 0; | |
6065 | ||
6066 | while (!is_end_of_line[(unsigned char) *s] | |
6067 | || (inquote && !ISCNTRL (*s)) | |
6068 | || (inquote == '\'' && flag_mri) | |
6069 | #ifdef TC_EOL_IN_INSN | |
6070 | || (insn && TC_EOL_IN_INSN (s)) | |
6071 | #endif | |
7592cfd7 NC |
6072 | /* PR 6926: When we are parsing the body of a macro the sequence |
6073 | \@ is special - it refers to the invocation count. If the @ | |
6074 | character happens to be registered as a line-separator character | |
6075 | by the target, then the is_end_of_line[] test above will have | |
6076 | returned true, but we need to ignore the line separating | |
6077 | semantics in this particular case. */ | |
6078 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
6079 | ) |
6080 | { | |
6081 | if (mri_string && *s == '\'') | |
6082 | inquote ^= *s; | |
6083 | else if (inescape) | |
6084 | inescape = 0; | |
6085 | else if (*s == '\\') | |
6086 | inescape = 1; | |
6087 | else if (!inquote | |
6088 | ? *s == '"' | |
6089 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
6090 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
6091 | #endif | |
6092 | : *s == inquote) | |
6093 | inquote ^= *s; | |
6094 | ++s; | |
6095 | } | |
6096 | if (inquote) | |
6097 | as_warn (_("missing closing `%c'"), inquote); | |
6098 | if (inescape) | |
6099 | as_warn (_("stray `\\'")); | |
6100 | return s; | |
6101 | } | |
6102 | ||
6103 | char * | |
6104 | find_end_of_line (char *s, int mri_string) | |
6105 | { | |
7592cfd7 | 6106 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 6107 | } |