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Commit | Line | Data |
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252b5132 | 1 | /* read.c - read a source file - |
fd67aa11 | 2 | Copyright (C) 1986-2024 Free Software Foundation, Inc. |
252b5132 | 3 | |
ec2655a6 | 4 | This file is part of GAS, the GNU Assembler. |
252b5132 | 5 | |
ec2655a6 NC |
6 | GAS is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3, or (at your option) | |
9 | any later version. | |
252b5132 | 10 | |
ec2655a6 NC |
11 | GAS is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
252b5132 | 15 | |
ec2655a6 NC |
16 | You should have received a copy of the GNU General Public License |
17 | along with GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
252b5132 | 20 | |
59c871b4 | 21 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
33eaf5de | 22 | But then, GNU isn't supposed to run on your machine anyway. |
041ff4dd | 23 | (RMS is so shortsighted sometimes.) */ |
041ff4dd | 24 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 25 | |
252b5132 | 26 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 27 | grow when we do 4361 style flonums. */ |
252b5132 RH |
28 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
29 | ||
47eebc20 | 30 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
31 | Another group of these functions is in the expr.c module. */ |
32 | ||
252b5132 | 33 | #include "as.h" |
3882b010 | 34 | #include "safe-ctype.h" |
252b5132 RH |
35 | #include "subsegs.h" |
36 | #include "sb.h" | |
37 | #include "macro.h" | |
38 | #include "obstack.h" | |
252b5132 | 39 | #include "ecoff.h" |
54cfded0 | 40 | #include "dw2gencfi.h" |
c02a969d | 41 | #include "scfidw2gen.h" |
ba646820 | 42 | #include "codeview.h" |
7bfd842d | 43 | #include "wchar.h" |
adb9ac5f | 44 | #include "filenames.h" |
c7defc53 | 45 | #include "ginsn.h" |
252b5132 | 46 | |
d27aad4e AC |
47 | #include <limits.h> |
48 | ||
252b5132 | 49 | #ifndef TC_START_LABEL |
2e57ce7b | 50 | #define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR) (NEXT_CHAR == ':') |
252b5132 RH |
51 | #endif |
52 | ||
8684e216 HPN |
53 | /* Set by the object-format or the target. */ |
54 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 55 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 56 | do \ |
d6415f6c AM |
57 | { \ |
58 | if ((SIZE) >= 8) \ | |
59 | (P2VAR) = 3; \ | |
60 | else if ((SIZE) >= 4) \ | |
61 | (P2VAR) = 2; \ | |
62 | else if ((SIZE) >= 2) \ | |
63 | (P2VAR) = 1; \ | |
64 | else \ | |
65 | (P2VAR) = 0; \ | |
041ff4dd NC |
66 | } \ |
67 | while (0) | |
8684e216 HPN |
68 | #endif |
69 | ||
041ff4dd | 70 | char *input_line_pointer; /*->next char of source file to parse. */ |
5b7c81bd | 71 | bool input_from_string = false; |
252b5132 RH |
72 | |
73 | #if BITS_PER_CHAR != 8 | |
74 | /* The following table is indexed by[(char)] and will break if | |
75 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
76 | die horribly; | |
77 | #endif | |
78 | ||
79 | #ifndef LEX_AT | |
252b5132 RH |
80 | #define LEX_AT 0 |
81 | #endif | |
82 | ||
83 | #ifndef LEX_BR | |
84 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
85 | #define LEX_BR 0 | |
86 | #endif | |
87 | ||
88 | #ifndef LEX_PCT | |
89 | /* The Delta 68k assembler permits % inside label names. */ | |
90 | #define LEX_PCT 0 | |
91 | #endif | |
92 | ||
93 | #ifndef LEX_QM | |
94 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
95 | #define LEX_QM 0 | |
96 | #endif | |
97 | ||
58b5739a | 98 | #ifndef LEX_HASH |
800eeca4 JW |
99 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
100 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
101 | #define LEX_HASH 0 |
102 | #endif | |
103 | ||
252b5132 | 104 | #ifndef LEX_DOLLAR |
252b5132 RH |
105 | #define LEX_DOLLAR 3 |
106 | #endif | |
107 | ||
108 | #ifndef LEX_TILDE | |
109 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
110 | #define LEX_TILDE 0 | |
111 | #endif | |
112 | ||
041ff4dd | 113 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 114 | char lex_type[256] = { |
252b5132 RH |
115 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
116 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 117 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
118 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
119 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
121 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
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 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
127 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
128 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
129 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
130 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
131 | }; | |
132 | ||
041ff4dd | 133 | /* In: a character. |
d67ffd56 L |
134 | Out: 1 if this character ends a line. |
135 | 2 if this character is a line separator. */ | |
ef99799a | 136 | char is_end_of_line[256] = { |
252b5132 | 137 | #ifdef CR_EOL |
b75c0c92 | 138 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 139 | #else |
b75c0c92 | 140 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 141 | #endif |
b75c0c92 AM |
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, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
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, /* */ | |
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, /* */ | |
152 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
153 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
154 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
155 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
156 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 157 | }; |
252b5132 | 158 | |
a8a3b3b2 | 159 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
160 | char original_case_string[128]; |
161 | #endif | |
162 | ||
041ff4dd | 163 | /* Functions private to this file. */ |
252b5132 | 164 | |
041ff4dd NC |
165 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
166 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 167 | |
041ff4dd NC |
168 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
169 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
170 | internals manual. */ | |
252b5132 RH |
171 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
172 | ||
041ff4dd | 173 | /* Variables for handling include file directory table. */ |
252b5132 | 174 | |
041ff4dd | 175 | /* Table of pointers to directories to search for .include's. */ |
e0471c16 | 176 | const char **include_dirs; |
041ff4dd NC |
177 | |
178 | /* How many are in the table. */ | |
adb9ac5f | 179 | size_t include_dir_count; |
041ff4dd NC |
180 | |
181 | /* Length of longest in table. */ | |
adb9ac5f | 182 | size_t include_dir_maxlen; |
252b5132 RH |
183 | |
184 | #ifndef WORKING_DOT_WORD | |
185 | struct broken_word *broken_words; | |
186 | int new_broken_words; | |
187 | #endif | |
188 | ||
189 | /* The current offset into the absolute section. We don't try to | |
190 | build frags in the absolute section, since no data can be stored | |
191 | there. We just keep track of the current offset. */ | |
192 | addressT abs_section_offset; | |
193 | ||
194 | /* If this line had an MRI style label, it is stored in this variable. | |
195 | This is used by some of the MRI pseudo-ops. */ | |
196 | symbolS *line_label; | |
197 | ||
198 | /* This global variable is used to support MRI common sections. We | |
199 | translate such sections into a common symbol. This variable is | |
200 | non-NULL when we are in an MRI common section. */ | |
201 | symbolS *mri_common_symbol; | |
202 | ||
203 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
204 | need to align to an even byte boundary unless the next pseudo-op is | |
205 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
206 | may be needed. */ | |
207 | static int mri_pending_align; | |
208 | ||
f049c189 AM |
209 | /* Record the current function so that we can issue an error message for |
210 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
211 | arguments. */ | |
212 | static char *current_name; | |
213 | static char *current_label; | |
214 | ||
252b5132 RH |
215 | #ifndef NO_LISTING |
216 | #ifdef OBJ_ELF | |
f049c189 AM |
217 | static int dwarf_file; |
218 | static int dwarf_line; | |
219 | ||
252b5132 RH |
220 | /* This variable is set to be non-zero if the next string we see might |
221 | be the name of the source file in DWARF debugging information. See | |
222 | the comment in emit_expr for the format we look for. */ | |
223 | static int dwarf_file_string; | |
224 | #endif | |
225 | #endif | |
226 | ||
fa94de6b RM |
227 | /* If the target defines the md_frag_max_var hook then we know |
228 | enough to implement the .bundle_align_mode features. */ | |
229 | #ifdef md_frag_max_var | |
230 | # define HANDLE_BUNDLE | |
231 | #endif | |
232 | ||
233 | #ifdef HANDLE_BUNDLE | |
234 | /* .bundle_align_mode sets this. Normally it's zero. When nonzero, | |
235 | it's the exponent of the bundle size, and aligned instruction bundle | |
236 | mode is in effect. */ | |
237 | static unsigned int bundle_align_p2; | |
238 | ||
239 | /* These are set by .bundle_lock and .bundle_unlock. .bundle_lock sets | |
240 | bundle_lock_frag to frag_now and then starts a new frag with | |
241 | frag_align_code. At the same time, bundle_lock_frain gets frchain_now, | |
242 | so that .bundle_unlock can verify that we didn't change segments. | |
243 | .bundle_unlock resets both to NULL. If we detect a bundling violation, | |
244 | then we reset bundle_lock_frchain to NULL as an indicator that we've | |
245 | already diagnosed the error with as_bad and don't need a cascade of | |
246 | redundant errors, but bundle_lock_frag remains set to indicate that | |
247 | we are expecting to see .bundle_unlock. */ | |
248 | static fragS *bundle_lock_frag; | |
249 | static frchainS *bundle_lock_frchain; | |
d416e51d RM |
250 | |
251 | /* This is incremented by .bundle_lock and decremented by .bundle_unlock, | |
252 | to allow nesting. */ | |
253 | static unsigned int bundle_lock_depth; | |
fa94de6b RM |
254 | #endif |
255 | ||
87c245cc | 256 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd | 257 | static void s_align (int, int); |
caa32fe5 | 258 | static void s_altmacro (int); |
057f53c1 | 259 | static void s_bad_end (int); |
05e9452c | 260 | static void s_reloc (int); |
39e6acbd | 261 | static int hex_float (int, char *); |
39e6acbd KH |
262 | static segT get_known_segmented_expression (expressionS * expP); |
263 | static void pobegin (void); | |
b1822093 | 264 | static void poend (void); |
39a45edc | 265 | static size_t get_non_macro_line_sb (sb *); |
39e6acbd | 266 | static void generate_file_debug (void); |
7592cfd7 | 267 | static char *_find_end_of_line (char *, int, int, int); |
252b5132 | 268 | \f |
252b5132 | 269 | void |
39e6acbd | 270 | read_begin (void) |
252b5132 RH |
271 | { |
272 | const char *p; | |
273 | ||
274 | pobegin (); | |
275 | obj_read_begin_hook (); | |
276 | ||
252b5132 RH |
277 | obstack_begin (&cond_obstack, chunksize); |
278 | ||
2e6976a8 DG |
279 | #ifndef tc_line_separator_chars |
280 | #define tc_line_separator_chars line_separator_chars | |
281 | #endif | |
041ff4dd | 282 | /* Use machine dependent syntax. */ |
2e6976a8 | 283 | for (p = tc_line_separator_chars; *p; p++) |
d67ffd56 | 284 | is_end_of_line[(unsigned char) *p] = 2; |
041ff4dd | 285 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
286 | |
287 | if (flag_mri) | |
288 | lex_type['?'] = 3; | |
24b7e8b1 | 289 | stabs_begin (); |
f049c189 AM |
290 | |
291 | #ifndef WORKING_DOT_WORD | |
292 | broken_words = NULL; | |
293 | new_broken_words = 0; | |
294 | #endif | |
295 | ||
296 | abs_section_offset = 0; | |
297 | ||
298 | line_label = NULL; | |
299 | mri_common_symbol = NULL; | |
300 | mri_pending_align = 0; | |
301 | ||
302 | current_name = NULL; | |
303 | current_label = NULL; | |
304 | ||
305 | #ifndef NO_LISTING | |
306 | #ifdef OBJ_ELF | |
307 | dwarf_file = 0; | |
308 | dwarf_line = -1; | |
309 | dwarf_file_string = 0; | |
310 | #endif | |
311 | #endif | |
312 | ||
313 | #ifdef HANDLE_BUNDLE | |
314 | bundle_align_p2 = 0; | |
315 | bundle_lock_frag = NULL; | |
316 | bundle_lock_frchain = NULL; | |
317 | bundle_lock_depth = 0; | |
318 | #endif | |
252b5132 | 319 | } |
b1822093 AM |
320 | |
321 | void | |
322 | read_end (void) | |
323 | { | |
24b7e8b1 | 324 | stabs_end (); |
b1822093 | 325 | poend (); |
af3d7ab7 | 326 | _obstack_free (&cond_obstack, NULL); |
6f860418 AM |
327 | free (current_name); |
328 | free (current_label); | |
b1822093 | 329 | } |
252b5132 | 330 | \f |
cc1bc22a | 331 | #ifndef TC_ADDRESS_BYTES |
cc1bc22a AM |
332 | #define TC_ADDRESS_BYTES address_bytes |
333 | ||
334 | static inline int | |
335 | address_bytes (void) | |
336 | { | |
337 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
338 | contain an address. */ | |
339 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
340 | n |= n >> 1; | |
341 | n |= n >> 2; | |
342 | n += 1; | |
343 | return n; | |
344 | } | |
345 | #endif | |
cc1bc22a | 346 | |
041ff4dd | 347 | /* Set up pseudo-op tables. */ |
252b5132 | 348 | |
d1cffdc3 | 349 | static htab_t po_hash; |
252b5132 | 350 | |
ef99799a | 351 | static const pseudo_typeS potable[] = { |
252b5132 RH |
352 | {"abort", s_abort, 0}, |
353 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 354 | {"altmacro", s_altmacro, 1}, |
38a57ae7 NC |
355 | {"ascii", stringer, 8+0}, |
356 | {"asciz", stringer, 8+1}, | |
252b5132 RH |
357 | {"balign", s_align_bytes, 0}, |
358 | {"balignw", s_align_bytes, -2}, | |
359 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 360 | /* block */ |
fa94de6b RM |
361 | #ifdef HANDLE_BUNDLE |
362 | {"bundle_align_mode", s_bundle_align_mode, 0}, | |
363 | {"bundle_lock", s_bundle_lock, 0}, | |
364 | {"bundle_unlock", s_bundle_unlock, 0}, | |
365 | #endif | |
252b5132 RH |
366 | {"byte", cons, 1}, |
367 | {"comm", s_comm, 0}, | |
368 | {"common", s_mri_common, 0}, | |
369 | {"common.s", s_mri_common, 1}, | |
370 | {"data", s_data, 0}, | |
371 | {"dc", cons, 2}, | |
cc1bc22a | 372 | {"dc.a", cons, 0}, |
252b5132 RH |
373 | {"dc.b", cons, 1}, |
374 | {"dc.d", float_cons, 'd'}, | |
375 | {"dc.l", cons, 4}, | |
376 | {"dc.s", float_cons, 'f'}, | |
377 | {"dc.w", cons, 2}, | |
378 | {"dc.x", float_cons, 'x'}, | |
379 | {"dcb", s_space, 2}, | |
380 | {"dcb.b", s_space, 1}, | |
381 | {"dcb.d", s_float_space, 'd'}, | |
382 | {"dcb.l", s_space, 4}, | |
383 | {"dcb.s", s_float_space, 'f'}, | |
384 | {"dcb.w", s_space, 2}, | |
385 | {"dcb.x", s_float_space, 'x'}, | |
386 | {"ds", s_space, 2}, | |
387 | {"ds.b", s_space, 1}, | |
388 | {"ds.d", s_space, 8}, | |
389 | {"ds.l", s_space, 4}, | |
e74e2b4c | 390 | {"ds.p", s_space, 'p'}, |
252b5132 RH |
391 | {"ds.s", s_space, 4}, |
392 | {"ds.w", s_space, 2}, | |
e74e2b4c | 393 | {"ds.x", s_space, 'x'}, |
252b5132 RH |
394 | {"debug", s_ignore, 0}, |
395 | #ifdef S_SET_DESC | |
396 | {"desc", s_desc, 0}, | |
397 | #endif | |
041ff4dd | 398 | /* dim */ |
252b5132 | 399 | {"double", float_cons, 'd'}, |
041ff4dd NC |
400 | /* dsect */ |
401 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
402 | {"else", s_else, 0}, |
403 | {"elsec", s_else, 0}, | |
3fd9f047 | 404 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
405 | {"end", s_end, 0}, |
406 | {"endc", s_endif, 0}, | |
407 | {"endfunc", s_func, 1}, | |
408 | {"endif", s_endif, 0}, | |
057f53c1 JB |
409 | {"endm", s_bad_end, 0}, |
410 | {"endr", s_bad_end, 1}, | |
041ff4dd | 411 | /* endef */ |
252b5132 RH |
412 | {"equ", s_set, 0}, |
413 | {"equiv", s_set, 1}, | |
9497f5ac | 414 | {"eqv", s_set, -1}, |
252b5132 | 415 | {"err", s_err, 0}, |
d190d046 | 416 | {"error", s_errwarn, 1}, |
252b5132 | 417 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
418 | /* extend */ |
419 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 | 420 | {"fail", s_fail, 0}, |
c39e89c3 | 421 | {"file", s_file, 0}, |
252b5132 RH |
422 | {"fill", s_fill, 0}, |
423 | {"float", float_cons, 'f'}, | |
424 | {"format", s_ignore, 0}, | |
425 | {"func", s_func, 0}, | |
426 | {"global", s_globl, 0}, | |
427 | {"globl", s_globl, 0}, | |
428 | {"hword", cons, 2}, | |
429 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 430 | {"ifb", s_ifb, 1}, |
252b5132 RH |
431 | {"ifc", s_ifc, 0}, |
432 | {"ifdef", s_ifdef, 0}, | |
433 | {"ifeq", s_if, (int) O_eq}, | |
434 | {"ifeqs", s_ifeqs, 0}, | |
435 | {"ifge", s_if, (int) O_ge}, | |
436 | {"ifgt", s_if, (int) O_gt}, | |
437 | {"ifle", s_if, (int) O_le}, | |
438 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 439 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
440 | {"ifnc", s_ifc, 1}, |
441 | {"ifndef", s_ifdef, 1}, | |
442 | {"ifne", s_if, (int) O_ne}, | |
443 | {"ifnes", s_ifeqs, 1}, | |
444 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 445 | {"incbin", s_incbin, 0}, |
252b5132 RH |
446 | {"include", s_include, 0}, |
447 | {"int", cons, 4}, | |
448 | {"irp", s_irp, 0}, | |
449 | {"irep", s_irp, 0}, | |
450 | {"irpc", s_irp, 1}, | |
451 | {"irepc", s_irp, 1}, | |
452 | {"lcomm", s_lcomm, 0}, | |
c2069bb2 | 453 | {"lflags", s_ignore, 0}, /* Listing flags. */ |
c39e89c3 | 454 | {"linefile", s_linefile, 0}, |
252b5132 | 455 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 456 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
457 | {"llen", listing_psize, 1}, |
458 | {"long", cons, 4}, | |
459 | {"lsym", s_lsym, 0}, | |
460 | {"macro", s_macro, 0}, | |
461 | {"mexit", s_mexit, 0}, | |
462 | {"mri", s_mri, 0}, | |
463 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
464 | {"name", s_ignore, 0}, | |
caa32fe5 | 465 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 466 | {"noformat", s_ignore, 0}, |
041ff4dd | 467 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 | 468 | {"nopage", listing_nopage, 0}, |
b1766e7c | 469 | {"nop", s_nop, 0}, |
8f065d3b | 470 | {"nops", s_nops, 0}, |
252b5132 RH |
471 | {"octa", cons, 16}, |
472 | {"offset", s_struct, 0}, | |
473 | {"org", s_org, 0}, | |
474 | {"p2align", s_align_ptwo, 0}, | |
475 | {"p2alignw", s_align_ptwo, -2}, | |
476 | {"p2alignl", s_align_ptwo, -4}, | |
477 | {"page", listing_eject, 0}, | |
478 | {"plen", listing_psize, 0}, | |
479 | {"print", s_print, 0}, | |
041ff4dd | 480 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
481 | {"purgem", s_purgem, 0}, |
482 | {"quad", cons, 8}, | |
05e9452c | 483 | {"reloc", s_reloc, 0}, |
252b5132 RH |
484 | {"rep", s_rept, 0}, |
485 | {"rept", s_rept, 0}, | |
486 | {"rva", s_rva, 4}, | |
041ff4dd NC |
487 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
488 | /* scl */ | |
489 | /* sect */ | |
252b5132 RH |
490 | {"set", s_set, 0}, |
491 | {"short", cons, 2}, | |
492 | {"single", float_cons, 'f'}, | |
041ff4dd | 493 | /* size */ |
252b5132 RH |
494 | {"space", s_space, 0}, |
495 | {"skip", s_space, 0}, | |
496 | {"sleb128", s_leb128, 1}, | |
497 | {"spc", s_ignore, 0}, | |
498 | {"stabd", s_stab, 'd'}, | |
499 | {"stabn", s_stab, 'n'}, | |
500 | {"stabs", s_stab, 's'}, | |
38a57ae7 NC |
501 | {"string", stringer, 8+1}, |
502 | {"string8", stringer, 8+1}, | |
503 | {"string16", stringer, 16+1}, | |
504 | {"string32", stringer, 32+1}, | |
505 | {"string64", stringer, 64+1}, | |
252b5132 | 506 | {"struct", s_struct, 0}, |
041ff4dd | 507 | /* tag */ |
252b5132 RH |
508 | {"text", s_text, 0}, |
509 | ||
510 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
511 | won't be able to use it for a while -- probably a year or more. | |
512 | But once this has been released, check with gcc maintainers | |
513 | before deleting it or even changing the spelling. */ | |
514 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
515 | /* If we're folding case -- done for some targets, not necessarily | |
516 | all -- the above string in an input file will be converted to | |
517 | this one. Match it either way... */ | |
518 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
519 | ||
041ff4dd | 520 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 521 | {"ttl", listing_title, 0}, |
041ff4dd | 522 | /* type */ |
252b5132 | 523 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
524 | /* use */ |
525 | /* val */ | |
252b5132 RH |
526 | {"xcom", s_comm, 0}, |
527 | {"xdef", s_globl, 0}, | |
528 | {"xref", s_ignore, 0}, | |
529 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 530 | {"warning", s_errwarn, 0}, |
06e77878 | 531 | {"weakref", s_weakref, 0}, |
252b5132 RH |
532 | {"word", cons, 2}, |
533 | {"zero", s_space, 0}, | |
5fda40b2 MF |
534 | {"2byte", cons, 2}, |
535 | {"4byte", cons, 4}, | |
536 | {"8byte", cons, 8}, | |
041ff4dd | 537 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
538 | }; |
539 | ||
87c245cc BE |
540 | static offsetT |
541 | get_absolute_expr (expressionS *exp) | |
542 | { | |
9497f5ac | 543 | expression_and_evaluate (exp); |
9136aa49 | 544 | |
87c245cc BE |
545 | if (exp->X_op != O_constant) |
546 | { | |
547 | if (exp->X_op != O_absent) | |
548 | as_bad (_("bad or irreducible absolute expression")); | |
549 | exp->X_add_number = 0; | |
550 | } | |
551 | return exp->X_add_number; | |
552 | } | |
553 | ||
554 | offsetT | |
555 | get_absolute_expression (void) | |
556 | { | |
557 | expressionS exp; | |
558 | ||
559 | return get_absolute_expr (&exp); | |
560 | } | |
561 | ||
f049c189 | 562 | static int pop_override_ok; |
252b5132 RH |
563 | static const char *pop_table_name; |
564 | ||
565 | void | |
39e6acbd | 566 | pop_insert (const pseudo_typeS *table) |
252b5132 | 567 | { |
252b5132 RH |
568 | const pseudo_typeS *pop; |
569 | for (pop = table; pop->poc_name; pop++) | |
570 | { | |
d1cffdc3 | 571 | if (str_hash_insert (po_hash, pop->poc_name, pop, 0) != NULL) |
fe0e921f | 572 | { |
fe0e921f AM |
573 | if (!pop_override_ok) |
574 | as_fatal (_("error constructing %s pseudo-op table"), | |
575 | pop_table_name); | |
576 | } | |
252b5132 RH |
577 | } |
578 | } | |
579 | ||
580 | #ifndef md_pop_insert | |
581 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
582 | #endif | |
583 | ||
584 | #ifndef obj_pop_insert | |
585 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
586 | #endif | |
587 | ||
54cfded0 AM |
588 | #ifndef cfi_pop_insert |
589 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
590 | #endif | |
591 | ||
c02a969d IB |
592 | #ifndef scfi_pop_insert |
593 | #define scfi_pop_insert() pop_insert(scfi_pseudo_table) | |
594 | #endif | |
595 | ||
041ff4dd | 596 | static void |
39e6acbd | 597 | pobegin (void) |
252b5132 | 598 | { |
d1cffdc3 | 599 | po_hash = str_htab_create (); |
252b5132 | 600 | |
041ff4dd | 601 | /* Do the target-specific pseudo ops. */ |
252b5132 | 602 | pop_table_name = "md"; |
f049c189 | 603 | pop_override_ok = 0; |
252b5132 RH |
604 | md_pop_insert (); |
605 | ||
041ff4dd | 606 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
607 | pop_table_name = "obj"; |
608 | pop_override_ok = 1; | |
609 | obj_pop_insert (); | |
610 | ||
041ff4dd | 611 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
612 | pop_table_name = "standard"; |
613 | pop_insert (potable); | |
d6415f6c | 614 | |
d58a1929 | 615 | /* Now CFI ones. */ |
c02a969d IB |
616 | #if defined (TARGET_USE_SCFI) && defined (TARGET_USE_GINSN) |
617 | if (flag_synth_cfi) | |
618 | { | |
619 | pop_table_name = "scfi"; | |
620 | scfi_pop_insert (); | |
621 | } | |
622 | else | |
623 | #endif | |
624 | { | |
625 | pop_table_name = "cfi"; | |
626 | cfi_pop_insert (); | |
627 | } | |
252b5132 | 628 | } |
b1822093 AM |
629 | |
630 | static void | |
631 | poend (void) | |
632 | { | |
633 | htab_delete (po_hash); | |
634 | } | |
252b5132 | 635 | \f |
e74211b6 | 636 | #define HANDLE_CONDITIONAL_ASSEMBLY(num_read) \ |
252b5132 RH |
637 | if (ignore_input ()) \ |
638 | { \ | |
e74211b6 JB |
639 | char *eol = find_end_of_line (input_line_pointer - (num_read), \ |
640 | flag_m68k_mri); \ | |
40a4d956 JB |
641 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
642 | && eol >= buffer_limit) \ | |
643 | ? buffer_limit \ | |
644 | : eol + 1; \ | |
252b5132 RH |
645 | continue; \ |
646 | } | |
647 | ||
5e75c3ab JB |
648 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
649 | static int | |
650 | try_macro (char term, const char *line) | |
651 | { | |
652 | sb out; | |
653 | const char *err; | |
654 | macro_entry *macro; | |
655 | ||
656 | if (check_macro (line, &out, &err, ¯o)) | |
657 | { | |
658 | if (err != NULL) | |
659 | as_bad ("%s", err); | |
660 | *input_line_pointer++ = term; | |
661 | input_scrub_include_sb (&out, | |
657edeab | 662 | input_line_pointer, expanding_macro); |
5e75c3ab JB |
663 | sb_kill (&out); |
664 | buffer_limit = | |
665 | input_scrub_next_buffer (&input_line_pointer); | |
666 | #ifdef md_macro_info | |
667 | md_macro_info (macro); | |
668 | #endif | |
669 | return 1; | |
670 | } | |
671 | return 0; | |
672 | } | |
673 | ||
fa94de6b RM |
674 | #ifdef HANDLE_BUNDLE |
675 | /* Start a new instruction bundle. Returns the rs_align_code frag that | |
676 | will be used to align the new bundle. */ | |
677 | static fragS * | |
678 | start_bundle (void) | |
679 | { | |
680 | fragS *frag = frag_now; | |
681 | ||
682 | frag_align_code (0, 0); | |
683 | ||
684 | while (frag->fr_type != rs_align_code) | |
685 | frag = frag->fr_next; | |
686 | ||
687 | gas_assert (frag != frag_now); | |
688 | ||
689 | return frag; | |
690 | } | |
691 | ||
692 | /* Calculate the maximum size after relaxation of the region starting | |
693 | at the given frag and extending through frag_now (which is unfinished). */ | |
694 | static unsigned int | |
695 | pending_bundle_size (fragS *frag) | |
696 | { | |
697 | unsigned int offset = frag->fr_fix; | |
698 | unsigned int size = 0; | |
699 | ||
700 | gas_assert (frag != frag_now); | |
701 | gas_assert (frag->fr_type == rs_align_code); | |
702 | ||
703 | while (frag != frag_now) | |
704 | { | |
705 | /* This should only happen in what will later become an error case. */ | |
706 | if (frag == NULL) | |
707 | return 0; | |
708 | ||
709 | size += frag->fr_fix; | |
710 | if (frag->fr_type == rs_machine_dependent) | |
711 | size += md_frag_max_var (frag); | |
712 | ||
713 | frag = frag->fr_next; | |
714 | } | |
715 | ||
716 | gas_assert (frag == frag_now); | |
717 | size += frag_now_fix (); | |
718 | if (frag->fr_type == rs_machine_dependent) | |
719 | size += md_frag_max_var (frag); | |
720 | ||
721 | gas_assert (size >= offset); | |
722 | ||
723 | return size - offset; | |
724 | } | |
725 | ||
726 | /* Finish off the frag created to ensure bundle alignment. */ | |
727 | static void | |
728 | finish_bundle (fragS *frag, unsigned int size) | |
729 | { | |
730 | gas_assert (bundle_align_p2 > 0); | |
731 | gas_assert (frag->fr_type == rs_align_code); | |
732 | ||
733 | if (size > 1) | |
734 | { | |
735 | /* If there is more than a single byte, then we need to set up the | |
736 | alignment frag. Otherwise we leave it at its initial state from | |
737 | calling frag_align_code (0, 0), so that it does nothing. */ | |
738 | frag->fr_offset = bundle_align_p2; | |
739 | frag->fr_subtype = size - 1; | |
740 | } | |
741 | ||
742 | /* We do this every time rather than just in s_bundle_align_mode | |
743 | so that we catch any affected section without needing hooks all | |
744 | over for all paths that do section changes. It's cheap enough. */ | |
9136aa49 DG |
745 | if (bundle_align_p2 > OCTETS_PER_BYTE_POWER) |
746 | record_alignment (now_seg, bundle_align_p2 - OCTETS_PER_BYTE_POWER); | |
fa94de6b RM |
747 | } |
748 | ||
749 | /* Assemble one instruction. This takes care of the bundle features | |
750 | around calling md_assemble. */ | |
751 | static void | |
752 | assemble_one (char *line) | |
753 | { | |
8d3eaee6 | 754 | fragS *insn_start_frag = NULL; |
fa94de6b RM |
755 | |
756 | if (bundle_lock_frchain != NULL && bundle_lock_frchain != frchain_now) | |
757 | { | |
758 | as_bad (_("cannot change section or subsection inside .bundle_lock")); | |
759 | /* Clearing this serves as a marker that we have already complained. */ | |
760 | bundle_lock_frchain = NULL; | |
761 | } | |
762 | ||
763 | if (bundle_lock_frchain == NULL && bundle_align_p2 > 0) | |
764 | insn_start_frag = start_bundle (); | |
765 | ||
766 | md_assemble (line); | |
767 | ||
768 | if (bundle_lock_frchain != NULL) | |
769 | { | |
770 | /* Make sure this hasn't pushed the locked sequence | |
771 | past the bundle size. */ | |
772 | unsigned int bundle_size = pending_bundle_size (bundle_lock_frag); | |
e54e9ac5 AM |
773 | if (bundle_size > 1U << bundle_align_p2) |
774 | as_bad (_ (".bundle_lock sequence at %u bytes, " | |
775 | "but .bundle_align_mode limit is %u bytes"), | |
fa94de6b RM |
776 | bundle_size, 1U << bundle_align_p2); |
777 | } | |
778 | else if (bundle_align_p2 > 0) | |
779 | { | |
780 | unsigned int insn_size = pending_bundle_size (insn_start_frag); | |
781 | ||
e54e9ac5 AM |
782 | if (insn_size > 1U << bundle_align_p2) |
783 | as_bad (_("single instruction is %u bytes long, " | |
784 | "but .bundle_align_mode limit is %u bytes"), | |
785 | insn_size, 1U << bundle_align_p2); | |
fa94de6b RM |
786 | |
787 | finish_bundle (insn_start_frag, insn_size); | |
788 | } | |
789 | } | |
790 | ||
791 | #else /* !HANDLE_BUNDLE */ | |
792 | ||
793 | # define assemble_one(line) md_assemble(line) | |
794 | ||
795 | #endif /* HANDLE_BUNDLE */ | |
796 | ||
5b7c81bd | 797 | static bool |
9136aa49 DG |
798 | in_bss (void) |
799 | { | |
fd361982 | 800 | flagword flags = bfd_section_flags (now_seg); |
9136aa49 DG |
801 | |
802 | return (flags & SEC_ALLOC) && !(flags & (SEC_LOAD | SEC_HAS_CONTENTS)); | |
803 | } | |
804 | ||
805 | /* Guts of .align directive: | |
806 | N is the power of two to which to align. A value of zero is accepted but | |
807 | ignored: the default alignment of the section will be at least this. | |
808 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
809 | LEN is the length of whatever FILL points to, if anything. If LEN is zero | |
810 | but FILL is not NULL then LEN is treated as if it were one. | |
811 | MAX is the maximum number of characters to skip when doing the alignment, | |
812 | or 0 if there is no maximum. */ | |
813 | ||
f86f5863 | 814 | void |
9136aa49 DG |
815 | do_align (unsigned int n, char *fill, unsigned int len, unsigned int max) |
816 | { | |
817 | if (now_seg == absolute_section || in_bss ()) | |
818 | { | |
819 | if (fill != NULL) | |
820 | while (len-- > 0) | |
821 | if (*fill++ != '\0') | |
822 | { | |
823 | if (now_seg == absolute_section) | |
824 | as_warn (_("ignoring fill value in absolute section")); | |
825 | else | |
826 | as_warn (_("ignoring fill value in section `%s'"), | |
827 | segment_name (now_seg)); | |
828 | break; | |
829 | } | |
830 | fill = NULL; | |
831 | len = 0; | |
832 | } | |
833 | ||
834 | #ifdef md_flush_pending_output | |
835 | md_flush_pending_output (); | |
836 | #endif | |
837 | ||
838 | #ifdef md_do_align | |
839 | md_do_align (n, fill, len, max, just_record_alignment); | |
840 | #endif | |
841 | ||
842 | /* Only make a frag if we HAVE to... */ | |
843 | if ((n > OCTETS_PER_BYTE_POWER) && !need_pass_2) | |
844 | { | |
845 | if (fill == NULL) | |
846 | { | |
847 | if (subseg_text_p (now_seg)) | |
848 | frag_align_code (n, max); | |
849 | else | |
850 | frag_align (n, 0, max); | |
851 | } | |
852 | else if (len <= 1) | |
853 | frag_align (n, *fill, max); | |
854 | else | |
855 | frag_align_pattern (n, fill, len, max); | |
856 | } | |
857 | ||
858 | #ifdef md_do_align | |
859 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL | |
860 | #endif | |
861 | ||
862 | if (n > OCTETS_PER_BYTE_POWER) | |
863 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); | |
864 | } | |
865 | ||
041ff4dd NC |
866 | /* We read the file, putting things into a web that represents what we |
867 | have been reading. */ | |
868 | void | |
e0471c16 | 869 | read_a_source_file (const char *name) |
252b5132 | 870 | { |
d02603dc NC |
871 | char nul_char; |
872 | char next_char; | |
91d6fa6a | 873 | char *s; /* String of symbol, '\0' appended. */ |
d27aad4e | 874 | long temp; |
32e4c1c2 | 875 | const pseudo_typeS *pop; |
252b5132 | 876 | |
4c400d5e AM |
877 | #ifdef WARN_COMMENTS |
878 | found_comment = 0; | |
879 | #endif | |
880 | ||
252b5132 RH |
881 | buffer = input_scrub_new_file (name); |
882 | ||
883 | listing_file (name); | |
884 | listing_newline (NULL); | |
885 | register_dependency (name); | |
886 | ||
887 | /* Generate debugging information before we've read anything in to denote | |
888 | this file as the "main" source file and not a subordinate one | |
889 | (e.g. N_SO vs N_SOL in stabs). */ | |
890 | generate_file_debug (); | |
891 | ||
892 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 893 | { /* We have another line to parse. */ |
5e75c3ab JB |
894 | #ifndef NO_LISTING |
895 | /* In order to avoid listing macro expansion lines with labels | |
896 | multiple times, keep track of which line was last issued. */ | |
f049c189 | 897 | char *last_eol = NULL; |
5e75c3ab | 898 | |
5e75c3ab | 899 | #endif |
252b5132 RH |
900 | while (input_line_pointer < buffer_limit) |
901 | { | |
5b7c81bd | 902 | bool was_new_line; |
041ff4dd | 903 | /* We have more of this buffer to parse. */ |
252b5132 | 904 | |
041ff4dd NC |
905 | /* We now have input_line_pointer->1st char of next line. |
906 | If input_line_pointer [-1] == '\n' then we just | |
907 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
908 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
909 | if (was_new_line) | |
252b5132 | 910 | { |
4a826962 | 911 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
912 | #ifdef md_start_line_hook |
913 | md_start_line_hook (); | |
914 | #endif | |
252b5132 RH |
915 | if (input_line_pointer[-1] == '\n') |
916 | bump_line_counters (); | |
f19df8f7 | 917 | } |
252b5132 | 918 | |
f19df8f7 AM |
919 | #ifndef NO_LISTING |
920 | /* If listing is on, and we are expanding a macro, then give | |
921 | the listing code the contents of the expanded line. */ | |
922 | if (listing) | |
923 | { | |
924 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
925 | { | |
926 | /* Find the end of the current expanded macro line. */ | |
927 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
928 | ||
c62e507e JB |
929 | if (s != last_eol |
930 | && !startswith (input_line_pointer, | |
931 | !flag_m68k_mri ? " .linefile " | |
932 | : " linefile ")) | |
f19df8f7 AM |
933 | { |
934 | char *copy; | |
53f2b36a | 935 | size_t len; |
f19df8f7 AM |
936 | |
937 | last_eol = s; | |
938 | /* Copy it for safe keeping. Also give an indication of | |
939 | how much macro nesting is involved at this point. */ | |
940 | len = s - input_line_pointer; | |
8860a416 | 941 | copy = XNEWVEC (char, len + macro_nest + 2); |
f19df8f7 AM |
942 | memset (copy, '>', macro_nest); |
943 | copy[macro_nest] = ' '; | |
944 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
945 | copy[macro_nest + 1 + len] = '\0'; | |
946 | ||
947 | /* Install the line with the listing facility. */ | |
948 | listing_newline (copy); | |
949 | } | |
950 | } | |
951 | else | |
952 | listing_newline (NULL); | |
953 | } | |
954 | #endif | |
955 | if (was_new_line) | |
956 | { | |
252b5132 RH |
957 | line_label = NULL; |
958 | ||
abd63a32 | 959 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 | 960 | { |
d02603dc | 961 | next_char = * input_line_pointer; |
252b5132 RH |
962 | /* Text at the start of a line must be a label, we |
963 | run down and stick a colon in. */ | |
d02603dc | 964 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 965 | { |
d02603dc | 966 | char *line_start; |
252b5132 RH |
967 | int mri_line_macro; |
968 | ||
e74211b6 | 969 | HANDLE_CONDITIONAL_ASSEMBLY (0); |
252b5132 | 970 | |
d02603dc NC |
971 | nul_char = get_symbol_name (& line_start); |
972 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
252b5132 RH |
973 | |
974 | /* In MRI mode, the EQU and MACRO pseudoops must | |
975 | be handled specially. */ | |
976 | mri_line_macro = 0; | |
977 | if (flag_m68k_mri) | |
978 | { | |
979 | char *rest = input_line_pointer + 1; | |
980 | ||
981 | if (*rest == ':') | |
982 | ++rest; | |
983 | if (*rest == ' ' || *rest == '\t') | |
984 | ++rest; | |
985 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
986 | || strncasecmp (rest, "SET", 3) == 0) | |
987 | && (rest[3] == ' ' || rest[3] == '\t')) | |
988 | { | |
989 | input_line_pointer = rest + 3; | |
990 | equals (line_start, | |
991 | strncasecmp (rest, "SET", 3) == 0); | |
992 | continue; | |
993 | } | |
994 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
995 | && (rest[5] == ' ' | |
996 | || rest[5] == '\t' | |
997 | || is_end_of_line[(unsigned char) rest[5]])) | |
998 | mri_line_macro = 1; | |
999 | } | |
1000 | ||
1001 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
1002 | pseudo-op specially: we don't want to put the |
1003 | symbol in the symbol table. */ | |
041ff4dd | 1004 | if (!mri_line_macro |
a25c045a | 1005 | #ifdef TC_START_LABEL_WITHOUT_COLON |
2e57ce7b | 1006 | && TC_START_LABEL_WITHOUT_COLON (nul_char, next_char) |
a25c045a | 1007 | #endif |
ef99799a | 1008 | ) |
252b5132 RH |
1009 | line_label = colon (line_start); |
1010 | else | |
1011 | line_label = symbol_create (line_start, | |
1012 | absolute_section, | |
e01e1cee | 1013 | &zero_address_frag, 0); |
252b5132 | 1014 | |
d02603dc NC |
1015 | next_char = restore_line_pointer (nul_char); |
1016 | if (next_char == ':') | |
252b5132 RH |
1017 | input_line_pointer++; |
1018 | } | |
1019 | } | |
1020 | } | |
1021 | ||
47eebc20 | 1022 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
1023 | We expect a well-formed assembler statement. |
1024 | A "symbol-name:" is a statement. | |
f0e652b4 | 1025 | |
041ff4dd NC |
1026 | Depending on what compiler is used, the order of these tests |
1027 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
1028 | Each test is independent of all other tests at the (top) |
1029 | level. */ | |
1030 | do | |
d02603dc NC |
1031 | nul_char = next_char = *input_line_pointer++; |
1032 | while (next_char == '\t' || next_char == ' ' || next_char == '\f'); | |
252b5132 | 1033 | |
041ff4dd NC |
1034 | /* C is the 1st significant character. |
1035 | Input_line_pointer points after that character. */ | |
d02603dc | 1036 | if (is_name_beginner (next_char) || next_char == '"') |
252b5132 | 1037 | { |
d02603dc NC |
1038 | char *rest; |
1039 | ||
041ff4dd | 1040 | /* Want user-defined label or pseudo/opcode. */ |
e74211b6 | 1041 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1042 | |
d02603dc NC |
1043 | --input_line_pointer; |
1044 | nul_char = get_symbol_name (& s); /* name's delimiter. */ | |
1045 | next_char = (nul_char == '"' ? input_line_pointer[1] : nul_char); | |
1046 | rest = input_line_pointer + (nul_char == '"' ? 2 : 1); | |
041ff4dd | 1047 | |
d02603dc NC |
1048 | /* NEXT_CHAR is character after symbol. |
1049 | The end of symbol in the input line is now '\0'. | |
d6415f6c AM |
1050 | S points to the beginning of the symbol. |
1051 | [In case of pseudo-op, s->'.'.] | |
d02603dc | 1052 | Input_line_pointer->'\0' where NUL_CHAR was. */ |
2e57ce7b | 1053 | if (TC_START_LABEL (s, nul_char, next_char)) |
252b5132 RH |
1054 | { |
1055 | if (flag_m68k_mri) | |
1056 | { | |
252b5132 | 1057 | /* In MRI mode, \tsym: set 0 is permitted. */ |
252b5132 RH |
1058 | if (*rest == ':') |
1059 | ++rest; | |
f0e652b4 | 1060 | |
252b5132 RH |
1061 | if (*rest == ' ' || *rest == '\t') |
1062 | ++rest; | |
f0e652b4 | 1063 | |
252b5132 RH |
1064 | if ((strncasecmp (rest, "EQU", 3) == 0 |
1065 | || strncasecmp (rest, "SET", 3) == 0) | |
1066 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1067 | { | |
1068 | input_line_pointer = rest + 3; | |
1069 | equals (s, 1); | |
1070 | continue; | |
1071 | } | |
1072 | } | |
1073 | ||
041ff4dd | 1074 | line_label = colon (s); /* User-defined label. */ |
d02603dc NC |
1075 | restore_line_pointer (nul_char); |
1076 | ++ input_line_pointer; | |
a645d1eb L |
1077 | #ifdef tc_check_label |
1078 | tc_check_label (line_label); | |
1079 | #endif | |
041ff4dd | 1080 | /* Input_line_pointer->after ':'. */ |
252b5132 | 1081 | SKIP_WHITESPACE (); |
252b5132 | 1082 | } |
d02603dc NC |
1083 | else if ((next_char == '=' && *rest == '=') |
1084 | || ((next_char == ' ' || next_char == '\t') | |
1085 | && rest[0] == '=' | |
1086 | && rest[1] == '=')) | |
9497f5ac NC |
1087 | { |
1088 | equals (s, -1); | |
1089 | demand_empty_rest_of_line (); | |
1090 | } | |
d02603dc NC |
1091 | else if ((next_char == '=' |
1092 | || ((next_char == ' ' || next_char == '\t') | |
1093 | && *rest == '=')) | |
ee3c9814 | 1094 | #ifdef TC_EQUAL_IN_INSN |
d02603dc | 1095 | && !TC_EQUAL_IN_INSN (next_char, s) |
ee3c9814 | 1096 | #endif |
fa94de6b | 1097 | ) |
252b5132 RH |
1098 | { |
1099 | equals (s, 1); | |
1100 | demand_empty_rest_of_line (); | |
1101 | } | |
1102 | else | |
041ff4dd NC |
1103 | { |
1104 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
1105 | pop = NULL; |
1106 | ||
a8a3b3b2 | 1107 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
1108 | { |
1109 | char *s2 = s; | |
37d8bb27 | 1110 | |
42135cad AM |
1111 | strncpy (original_case_string, s2, |
1112 | sizeof (original_case_string) - 1); | |
37d8bb27 | 1113 | original_case_string[sizeof (original_case_string) - 1] = 0; |
ef99799a | 1114 | |
252b5132 RH |
1115 | while (*s2) |
1116 | { | |
3882b010 | 1117 | *s2 = TOLOWER (*s2); |
252b5132 RH |
1118 | s2++; |
1119 | } | |
1120 | } | |
1121 | #endif | |
abd63a32 | 1122 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 1123 | { |
7be1c489 AM |
1124 | /* The MRI assembler uses pseudo-ops without |
1125 | a period. */ | |
d1cffdc3 | 1126 | pop = str_hash_find (po_hash, s); |
252b5132 RH |
1127 | if (pop != NULL && pop->poc_handler == NULL) |
1128 | pop = NULL; | |
1129 | } | |
1130 | ||
1131 | if (pop != NULL | |
041ff4dd | 1132 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 1133 | { |
041ff4dd | 1134 | /* PSEUDO - OP. |
f0e652b4 | 1135 | |
d02603dc | 1136 | WARNING: next_char may be end-of-line. |
d6415f6c AM |
1137 | We lookup the pseudo-op table with s+1 because we |
1138 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
1139 | |
1140 | if (pop == NULL) | |
d1cffdc3 | 1141 | pop = str_hash_find (po_hash, s + 1); |
e4475e39 NS |
1142 | if (pop && !pop->poc_handler) |
1143 | pop = NULL; | |
252b5132 RH |
1144 | |
1145 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
1146 | automatic alignment directive. What a hack |
1147 | this is. */ | |
252b5132 RH |
1148 | if (mri_pending_align |
1149 | && (pop == NULL | |
041ff4dd NC |
1150 | || !((pop->poc_handler == cons |
1151 | && pop->poc_val == 1) | |
1152 | || (pop->poc_handler == s_space | |
1153 | && pop->poc_val == 1) | |
252b5132 | 1154 | #ifdef tc_conditional_pseudoop |
041ff4dd | 1155 | || tc_conditional_pseudoop (pop) |
252b5132 | 1156 | #endif |
041ff4dd NC |
1157 | || pop->poc_handler == s_if |
1158 | || pop->poc_handler == s_ifdef | |
1159 | || pop->poc_handler == s_ifc | |
1160 | || pop->poc_handler == s_ifeqs | |
1161 | || pop->poc_handler == s_else | |
1162 | || pop->poc_handler == s_endif | |
1163 | || pop->poc_handler == s_globl | |
1164 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
1165 | { |
1166 | do_align (1, (char *) NULL, 0, 0); | |
1167 | mri_pending_align = 0; | |
f0e652b4 | 1168 | |
252b5132 RH |
1169 | if (line_label != NULL) |
1170 | { | |
2b47531b | 1171 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1172 | S_SET_VALUE (line_label, frag_now_fix ()); |
1173 | } | |
1174 | } | |
1175 | ||
041ff4dd | 1176 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
1177 | if (pop == NULL) |
1178 | { | |
5e75c3ab JB |
1179 | char *end = input_line_pointer; |
1180 | ||
d02603dc | 1181 | (void) restore_line_pointer (nul_char); |
252b5132 | 1182 | s_ignore (0); |
d02603dc | 1183 | nul_char = next_char = *--input_line_pointer; |
5e75c3ab | 1184 | *input_line_pointer = '\0'; |
d02603dc | 1185 | if (! macro_defined || ! try_macro (next_char, s)) |
5e75c3ab JB |
1186 | { |
1187 | *end = '\0'; | |
1188 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
d02603dc | 1189 | *input_line_pointer++ = nul_char; |
5e75c3ab | 1190 | } |
252b5132 RH |
1191 | continue; |
1192 | } | |
1193 | ||
041ff4dd | 1194 | /* Put it back for error messages etc. */ |
d02603dc | 1195 | next_char = restore_line_pointer (nul_char); |
252b5132 RH |
1196 | /* The following skip of whitespace is compulsory. |
1197 | A well shaped space is sometimes all that separates | |
041ff4dd | 1198 | keyword from operands. */ |
d02603dc | 1199 | if (next_char == ' ' || next_char == '\t') |
252b5132 | 1200 | input_line_pointer++; |
041ff4dd NC |
1201 | |
1202 | /* Input_line is restored. | |
d6415f6c AM |
1203 | Input_line_pointer->1st non-blank char |
1204 | after pseudo-operation. */ | |
252b5132 RH |
1205 | (*pop->poc_handler) (pop->poc_val); |
1206 | ||
1207 | /* If that was .end, just get out now. */ | |
1208 | if (pop->poc_handler == s_end) | |
1209 | goto quit; | |
1210 | } | |
1211 | else | |
1212 | { | |
d02603dc NC |
1213 | /* WARNING: next_char may be end-of-line. */ |
1214 | /* Also: input_line_pointer->`\0` where nul_char was. */ | |
1215 | (void) restore_line_pointer (nul_char); | |
7592cfd7 | 1216 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
d02603dc | 1217 | next_char = nul_char = *input_line_pointer; |
252b5132 RH |
1218 | *input_line_pointer = '\0'; |
1219 | ||
1220 | generate_lineno_debug (); | |
1221 | ||
d02603dc | 1222 | if (macro_defined && try_macro (next_char, s)) |
5e75c3ab | 1223 | continue; |
252b5132 RH |
1224 | |
1225 | if (mri_pending_align) | |
1226 | { | |
1227 | do_align (1, (char *) NULL, 0, 0); | |
1228 | mri_pending_align = 0; | |
1229 | if (line_label != NULL) | |
1230 | { | |
2b47531b | 1231 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
1232 | S_SET_VALUE (line_label, frag_now_fix ()); |
1233 | } | |
1234 | } | |
1235 | ||
fa94de6b | 1236 | assemble_one (s); /* Assemble 1 instruction. */ |
252b5132 | 1237 | |
3be64886 NC |
1238 | /* PR 19630: The backend may have set ilp to NULL |
1239 | if it encountered a catastrophic failure. */ | |
1240 | if (input_line_pointer == NULL) | |
1241 | as_fatal (_("unable to continue with assembly.")); | |
1242 | ||
d02603dc | 1243 | *input_line_pointer++ = nul_char; |
252b5132 RH |
1244 | |
1245 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
1246 | this instruction. */ |
1247 | } | |
1248 | } | |
252b5132 | 1249 | continue; |
041ff4dd | 1250 | } |
252b5132 RH |
1251 | |
1252 | /* Empty statement? */ | |
d02603dc | 1253 | if (is_end_of_line[(unsigned char) next_char]) |
252b5132 RH |
1254 | continue; |
1255 | ||
d02603dc | 1256 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (next_char)) |
252b5132 | 1257 | { |
041ff4dd | 1258 | /* local label ("4:") */ |
252b5132 RH |
1259 | char *backup = input_line_pointer; |
1260 | ||
e74211b6 | 1261 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 | 1262 | |
d02603dc NC |
1263 | temp = next_char - '0'; |
1264 | ||
041ff4dd | 1265 | /* Read the whole number. */ |
3882b010 | 1266 | while (ISDIGIT (*input_line_pointer)) |
252b5132 | 1267 | { |
d27aad4e | 1268 | const long digit = *input_line_pointer - '0'; |
226749d5 JB |
1269 | |
1270 | /* Don't accept labels which look like octal numbers. */ | |
1271 | if (temp == 0) | |
1272 | break; | |
19f7966e | 1273 | if (temp > (INT_MAX - digit) / 10) |
d27aad4e AC |
1274 | { |
1275 | as_bad (_("local label too large near %s"), backup); | |
1276 | temp = -1; | |
1277 | break; | |
1278 | } | |
1279 | temp = temp * 10 + digit; | |
252b5132 | 1280 | ++input_line_pointer; |
041ff4dd | 1281 | } |
252b5132 | 1282 | |
d27aad4e AC |
1283 | /* Overflow: stop processing the label. */ |
1284 | if (temp == -1) | |
7bb178ec L |
1285 | { |
1286 | ignore_rest_of_line (); | |
1287 | continue; | |
1288 | } | |
d27aad4e | 1289 | |
252b5132 RH |
1290 | if (LOCAL_LABELS_DOLLAR |
1291 | && *input_line_pointer == '$' | |
1292 | && *(input_line_pointer + 1) == ':') | |
1293 | { | |
1294 | input_line_pointer += 2; | |
1295 | ||
1296 | if (dollar_label_defined (temp)) | |
1297 | { | |
d27aad4e | 1298 | as_fatal (_("label \"%ld$\" redefined"), temp); |
252b5132 RH |
1299 | } |
1300 | ||
1301 | define_dollar_label (temp); | |
1302 | colon (dollar_label_name (temp, 0)); | |
1303 | continue; | |
1304 | } | |
1305 | ||
1306 | if (LOCAL_LABELS_FB | |
1307 | && *input_line_pointer++ == ':') | |
1308 | { | |
1309 | fb_label_instance_inc (temp); | |
1310 | colon (fb_label_name (temp, 0)); | |
1311 | continue; | |
1312 | } | |
1313 | ||
1314 | input_line_pointer = backup; | |
d02603dc | 1315 | } |
252b5132 | 1316 | |
d02603dc | 1317 | if (next_char && strchr (line_comment_chars, next_char)) |
041ff4dd | 1318 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1319 | sb sbuf; |
252b5132 | 1320 | char *ends; |
53f2b36a | 1321 | size_t len; |
252b5132 | 1322 | |
252b5132 | 1323 | s = input_line_pointer; |
d34049e8 | 1324 | if (!startswith (s, "APP\n")) |
601e61cd NC |
1325 | { |
1326 | /* We ignore it. */ | |
1327 | ignore_rest_of_line (); | |
1328 | continue; | |
1329 | } | |
1330 | bump_line_counters (); | |
252b5132 RH |
1331 | s += 4; |
1332 | ||
1333 | ends = strstr (s, "#NO_APP\n"); | |
53f2b36a | 1334 | len = ends ? ends - s : buffer_limit - s; |
252b5132 | 1335 | |
53f2b36a AM |
1336 | sb_build (&sbuf, len + 100); |
1337 | sb_add_buffer (&sbuf, s, len); | |
252b5132 RH |
1338 | if (!ends) |
1339 | { | |
252b5132 RH |
1340 | /* The end of the #APP wasn't in this buffer. We |
1341 | keep reading in buffers until we find the #NO_APP | |
1342 | that goes with this #APP There is one. The specs | |
47eebc20 | 1343 | guarantee it... */ |
252b5132 RH |
1344 | do |
1345 | { | |
53f2b36a AM |
1346 | buffer_limit = input_scrub_next_buffer (&buffer); |
1347 | if (!buffer_limit) | |
252b5132 | 1348 | break; |
252b5132 | 1349 | ends = strstr (buffer, "#NO_APP\n"); |
53f2b36a AM |
1350 | len = ends ? ends - buffer : buffer_limit - buffer; |
1351 | sb_add_buffer (&sbuf, buffer, len); | |
252b5132 RH |
1352 | } |
1353 | while (!ends); | |
252b5132 RH |
1354 | } |
1355 | ||
53f2b36a | 1356 | input_line_pointer = ends ? ends + 8 : NULL; |
657edeab | 1357 | input_scrub_include_sb (&sbuf, input_line_pointer, expanding_none); |
64e55042 HPN |
1358 | sb_kill (&sbuf); |
1359 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
252b5132 RH |
1360 | continue; |
1361 | } | |
1362 | ||
e74211b6 | 1363 | HANDLE_CONDITIONAL_ASSEMBLY (1); |
252b5132 RH |
1364 | |
1365 | #ifdef tc_unrecognized_line | |
d02603dc | 1366 | if (tc_unrecognized_line (next_char)) |
252b5132 RH |
1367 | continue; |
1368 | #endif | |
0e389e77 | 1369 | input_line_pointer--; |
601e61cd | 1370 | /* Report unknown char as error. */ |
c95b35a9 | 1371 | demand_empty_rest_of_line (); |
041ff4dd | 1372 | } |
041ff4dd | 1373 | } |
252b5132 RH |
1374 | |
1375 | quit: | |
04648e65 | 1376 | symbol_set_value_now (&dot_symbol); |
252b5132 | 1377 | |
fa94de6b RM |
1378 | #ifdef HANDLE_BUNDLE |
1379 | if (bundle_lock_frag != NULL) | |
1380 | { | |
1381 | as_bad_where (bundle_lock_frag->fr_file, bundle_lock_frag->fr_line, | |
1382 | _(".bundle_lock with no matching .bundle_unlock")); | |
1383 | bundle_lock_frag = NULL; | |
1384 | bundle_lock_frchain = NULL; | |
d416e51d | 1385 | bundle_lock_depth = 0; |
fa94de6b RM |
1386 | } |
1387 | #endif | |
1388 | ||
c7defc53 IB |
1389 | if (flag_synth_cfi) |
1390 | ginsn_data_end (symbol_temp_new_now ()); | |
1391 | ||
252b5132 | 1392 | #ifdef md_cleanup |
041ff4dd | 1393 | md_cleanup (); |
252b5132 | 1394 | #endif |
041ff4dd NC |
1395 | /* Close the input file. */ |
1396 | input_scrub_close (); | |
4c400d5e AM |
1397 | #ifdef WARN_COMMENTS |
1398 | { | |
1399 | if (warn_comment && found_comment) | |
1400 | as_warn_where (found_comment_file, found_comment, | |
1401 | "first comment found here"); | |
1402 | } | |
1403 | #endif | |
252b5132 RH |
1404 | } |
1405 | ||
e5604d79 | 1406 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
956a6ba3 | 1407 | Take the sign of the number from SIGN rather than X_add_number. */ |
e5604d79 RS |
1408 | |
1409 | static void | |
956a6ba3 | 1410 | convert_to_bignum (expressionS *exp, int sign) |
e5604d79 RS |
1411 | { |
1412 | valueT value; | |
1413 | unsigned int i; | |
1414 | ||
1415 | value = exp->X_add_number; | |
1416 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1417 | { | |
1418 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1419 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1420 | } | |
1421 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1422 | the sign of the original value. */ | |
956a6ba3 JB |
1423 | if ((exp->X_add_number < 0) == !sign) |
1424 | generic_bignum[i++] = sign ? LITTLENUM_MASK : 0; | |
e5604d79 RS |
1425 | exp->X_op = O_big; |
1426 | exp->X_add_number = i; | |
1427 | } | |
1428 | ||
252b5132 RH |
1429 | /* For most MRI pseudo-ops, the line actually ends at the first |
1430 | nonquoted space. This function looks for that point, stuffs a null | |
1431 | in, and sets *STOPCP to the character that used to be there, and | |
1432 | returns the location. | |
1433 | ||
1434 | Until I hear otherwise, I am going to assume that this is only true | |
1435 | for the m68k MRI assembler. */ | |
1436 | ||
1437 | char * | |
39e6acbd | 1438 | mri_comment_field (char *stopcp) |
252b5132 | 1439 | { |
252b5132 | 1440 | char *s; |
041ff4dd | 1441 | #ifdef TC_M68K |
252b5132 RH |
1442 | int inquote = 0; |
1443 | ||
1444 | know (flag_m68k_mri); | |
1445 | ||
1446 | for (s = input_line_pointer; | |
041ff4dd | 1447 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1448 | || inquote); |
1449 | s++) | |
1450 | { | |
1451 | if (*s == '\'') | |
041ff4dd | 1452 | inquote = !inquote; |
252b5132 | 1453 | } |
252b5132 | 1454 | #else |
041ff4dd NC |
1455 | for (s = input_line_pointer; |
1456 | !is_end_of_line[(unsigned char) *s]; | |
1457 | s++) | |
252b5132 | 1458 | ; |
041ff4dd | 1459 | #endif |
252b5132 RH |
1460 | *stopcp = *s; |
1461 | *s = '\0'; | |
f0e652b4 | 1462 | |
252b5132 | 1463 | return s; |
252b5132 RH |
1464 | } |
1465 | ||
1466 | /* Skip to the end of an MRI comment field. */ | |
1467 | ||
1468 | void | |
39e6acbd | 1469 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1470 | { |
1471 | know (flag_mri); | |
1472 | ||
1473 | input_line_pointer = stop; | |
1474 | *stop = stopc; | |
041ff4dd | 1475 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1476 | ++input_line_pointer; |
1477 | } | |
1478 | ||
041ff4dd | 1479 | void |
39e6acbd | 1480 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1481 | { |
1482 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1483 | } | |
1484 | ||
252b5132 RH |
1485 | /* Handle the .align pseudo-op. A positive ARG is a default alignment |
1486 | (in bytes). A negative ARG is the negative of the length of the | |
1487 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1488 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1489 | #ifndef TC_ALIGN_LIMIT |
1490 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1491 | #endif | |
9ebd302d | 1492 | |
252b5132 | 1493 | static void |
9136aa49 | 1494 | s_align (signed int arg, int bytes_p) |
252b5132 | 1495 | { |
11ec4ba9 | 1496 | unsigned int align_limit = TC_ALIGN_LIMIT; |
90320e40 | 1497 | addressT align; |
252b5132 | 1498 | char *stop = NULL; |
fb25138b | 1499 | char stopc = 0; |
252b5132 | 1500 | offsetT fill = 0; |
9136aa49 | 1501 | unsigned int max; |
252b5132 RH |
1502 | int fill_p; |
1503 | ||
1504 | if (flag_mri) | |
1505 | stop = mri_comment_field (&stopc); | |
1506 | ||
1507 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1508 | { | |
1509 | if (arg < 0) | |
1510 | align = 0; | |
1511 | else | |
041ff4dd | 1512 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1513 | } |
1514 | else | |
1515 | { | |
1516 | align = get_absolute_expression (); | |
1517 | SKIP_WHITESPACE (); | |
db2ed2e0 AM |
1518 | |
1519 | #ifdef TC_ALIGN_ZERO_IS_DEFAULT | |
1520 | if (arg > 0 && align == 0) | |
1521 | align = arg; | |
1522 | #endif | |
252b5132 RH |
1523 | } |
1524 | ||
1525 | if (bytes_p) | |
1526 | { | |
1527 | /* Convert to a power of 2. */ | |
1528 | if (align != 0) | |
1529 | { | |
1530 | unsigned int i; | |
1531 | ||
1532 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1533 | ; | |
1534 | if (align != 1) | |
0e389e77 | 1535 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1536 | |
252b5132 RH |
1537 | align = i; |
1538 | } | |
1539 | } | |
1540 | ||
b617dc20 | 1541 | if (align > align_limit) |
252b5132 | 1542 | { |
b617dc20 | 1543 | align = align_limit; |
90320e40 | 1544 | as_warn (_("alignment too large: %u assumed"), align_limit); |
252b5132 RH |
1545 | } |
1546 | ||
1547 | if (*input_line_pointer != ',') | |
1548 | { | |
1549 | fill_p = 0; | |
1550 | max = 0; | |
1551 | } | |
1552 | else | |
1553 | { | |
1554 | ++input_line_pointer; | |
1555 | if (*input_line_pointer == ',') | |
1556 | fill_p = 0; | |
1557 | else | |
1558 | { | |
1559 | fill = get_absolute_expression (); | |
1560 | SKIP_WHITESPACE (); | |
1561 | fill_p = 1; | |
1562 | } | |
1563 | ||
1564 | if (*input_line_pointer != ',') | |
1565 | max = 0; | |
1566 | else | |
1567 | { | |
1568 | ++input_line_pointer; | |
1569 | max = get_absolute_expression (); | |
1570 | } | |
1571 | } | |
1572 | ||
041ff4dd | 1573 | if (!fill_p) |
252b5132 RH |
1574 | { |
1575 | if (arg < 0) | |
1576 | as_warn (_("expected fill pattern missing")); | |
1577 | do_align (align, (char *) NULL, 0, max); | |
1578 | } | |
1579 | else | |
1580 | { | |
9136aa49 | 1581 | unsigned int fill_len; |
252b5132 RH |
1582 | |
1583 | if (arg >= 0) | |
1584 | fill_len = 1; | |
1585 | else | |
041ff4dd | 1586 | fill_len = -arg; |
9136aa49 | 1587 | |
252b5132 RH |
1588 | if (fill_len <= 1) |
1589 | { | |
9136aa49 | 1590 | char fill_char = 0; |
252b5132 RH |
1591 | |
1592 | fill_char = fill; | |
1593 | do_align (align, &fill_char, fill_len, max); | |
1594 | } | |
1595 | else | |
1596 | { | |
1597 | char ab[16]; | |
1598 | ||
1599 | if ((size_t) fill_len > sizeof ab) | |
9136aa49 DG |
1600 | { |
1601 | as_warn (_("fill pattern too long, truncating to %u"), | |
1602 | (unsigned) sizeof ab); | |
1603 | fill_len = sizeof ab; | |
1604 | } | |
1605 | ||
252b5132 RH |
1606 | md_number_to_chars (ab, fill, fill_len); |
1607 | do_align (align, ab, fill_len, max); | |
1608 | } | |
1609 | } | |
1610 | ||
1611 | demand_empty_rest_of_line (); | |
1612 | ||
1613 | if (flag_mri) | |
1614 | mri_comment_end (stop, stopc); | |
1615 | } | |
1616 | ||
1617 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1618 | align to a 4 byte boundary. */ | |
1619 | ||
041ff4dd | 1620 | void |
39e6acbd | 1621 | s_align_bytes (int arg) |
252b5132 RH |
1622 | { |
1623 | s_align (arg, 1); | |
1624 | } | |
1625 | ||
1626 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1627 | to a 2**4 boundary. */ | |
1628 | ||
041ff4dd | 1629 | void |
39e6acbd | 1630 | s_align_ptwo (int arg) |
252b5132 RH |
1631 | { |
1632 | s_align (arg, 0); | |
1633 | } | |
1634 | ||
caa32fe5 NC |
1635 | /* Switch in and out of alternate macro mode. */ |
1636 | ||
b38ead21 | 1637 | static void |
caa32fe5 NC |
1638 | s_altmacro (int on) |
1639 | { | |
1640 | demand_empty_rest_of_line (); | |
1250cd63 | 1641 | flag_macro_alternate = on; |
caa32fe5 NC |
1642 | } |
1643 | ||
7bfd842d NC |
1644 | /* Read a symbol name from input_line_pointer. |
1645 | ||
1646 | Stores the symbol name in a buffer and returns a pointer to this buffer. | |
1647 | The buffer is xalloc'ed. It is the caller's responsibility to free | |
1648 | this buffer. | |
1649 | ||
1650 | The name is not left in the i_l_p buffer as it may need processing | |
1651 | to handle escape characters. | |
1652 | ||
1653 | Advances i_l_p to the next non-whitespace character. | |
1654 | ||
1655 | If a symbol name could not be read, the routine issues an error | |
1656 | messages, skips to the end of the line and returns NULL. */ | |
1657 | ||
69602580 | 1658 | char * |
7bfd842d NC |
1659 | read_symbol_name (void) |
1660 | { | |
1661 | char * name; | |
1662 | char * start; | |
1663 | char c; | |
1664 | ||
1665 | c = *input_line_pointer++; | |
1666 | ||
1667 | if (c == '"') | |
1668 | { | |
1669 | #define SYM_NAME_CHUNK_LEN 128 | |
1670 | ptrdiff_t len = SYM_NAME_CHUNK_LEN; | |
1671 | char * name_end; | |
1672 | unsigned int C; | |
1673 | ||
8860a416 | 1674 | start = name = XNEWVEC (char, len + 1); |
7bfd842d NC |
1675 | |
1676 | name_end = name + SYM_NAME_CHUNK_LEN; | |
1677 | ||
1678 | while (is_a_char (C = next_char_of_string ())) | |
1679 | { | |
1680 | if (name >= name_end) | |
1681 | { | |
1682 | ptrdiff_t sofar; | |
1683 | ||
1684 | sofar = name - start; | |
1685 | len += SYM_NAME_CHUNK_LEN; | |
8860a416 | 1686 | start = XRESIZEVEC (char, start, len + 1); |
7bfd842d NC |
1687 | name_end = start + len; |
1688 | name = start + sofar; | |
1689 | } | |
34bca508 | 1690 | |
7bfd842d NC |
1691 | *name++ = (char) C; |
1692 | } | |
1693 | *name = 0; | |
1694 | ||
1695 | /* Since quoted symbol names can contain non-ASCII characters, | |
1696 | check the string and warn if it cannot be recognised by the | |
1697 | current character set. */ | |
5858ac62 NC |
1698 | /* PR 29447: mbstowcs ignores the third (length) parameter when |
1699 | the first (destination) parameter is NULL. For clarity sake | |
1700 | therefore we pass 0 rather than 'len' as the third parameter. */ | |
1701 | if (mbstowcs (NULL, name, 0) == (size_t) -1) | |
7bfd842d NC |
1702 | as_warn (_("symbol name not recognised in the current locale")); |
1703 | } | |
2469b3c5 | 1704 | else if (is_name_beginner (c) || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1705 | { |
1706 | ptrdiff_t len; | |
1707 | ||
1708 | name = input_line_pointer - 1; | |
1709 | ||
2469b3c5 | 1710 | /* We accept FAKE_LABEL_CHAR in a name in case this is |
7bfd842d NC |
1711 | being called with a constructed string. */ |
1712 | while (is_part_of_name (c = *input_line_pointer++) | |
2469b3c5 | 1713 | || (input_from_string && c == FAKE_LABEL_CHAR)) |
7bfd842d NC |
1714 | ; |
1715 | ||
1716 | len = (input_line_pointer - name) - 1; | |
8860a416 | 1717 | start = XNEWVEC (char, len + 1); |
7bfd842d NC |
1718 | |
1719 | memcpy (start, name, len); | |
1720 | start[len] = 0; | |
1721 | ||
1722 | /* Skip a name ender char if one is present. */ | |
1723 | if (! is_name_ender (c)) | |
1724 | --input_line_pointer; | |
1725 | } | |
1726 | else | |
1727 | name = start = NULL; | |
1728 | ||
1729 | if (name == start) | |
1730 | { | |
1731 | as_bad (_("expected symbol name")); | |
1732 | ignore_rest_of_line (); | |
9f6e5897 | 1733 | free (start); |
7bfd842d NC |
1734 | return NULL; |
1735 | } | |
34bca508 | 1736 | |
7bfd842d NC |
1737 | SKIP_WHITESPACE (); |
1738 | ||
1739 | return start; | |
1740 | } | |
1741 | ||
1742 | ||
e13bab5a AM |
1743 | symbolS * |
1744 | s_comm_internal (int param, | |
1745 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1746 | { |
e13bab5a | 1747 | char *name; |
e13bab5a AM |
1748 | offsetT temp, size; |
1749 | symbolS *symbolP = NULL; | |
252b5132 | 1750 | char *stop = NULL; |
fb25138b | 1751 | char stopc = 0; |
e13bab5a | 1752 | expressionS exp; |
252b5132 RH |
1753 | |
1754 | if (flag_mri) | |
1755 | stop = mri_comment_field (&stopc); | |
1756 | ||
7bfd842d NC |
1757 | if ((name = read_symbol_name ()) == NULL) |
1758 | goto out; | |
f0e652b4 | 1759 | |
e13bab5a AM |
1760 | /* Accept an optional comma after the name. The comma used to be |
1761 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1762 | if (*input_line_pointer == ',') | |
1763 | input_line_pointer++; | |
1764 | ||
e13bab5a AM |
1765 | temp = get_absolute_expr (&exp); |
1766 | size = temp; | |
65879393 | 1767 | size &= ((addressT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1768 | if (exp.X_op == O_absent) |
252b5132 | 1769 | { |
e13bab5a | 1770 | as_bad (_("missing size expression")); |
252b5132 | 1771 | ignore_rest_of_line (); |
e13bab5a | 1772 | goto out; |
252b5132 | 1773 | } |
95b83567 | 1774 | else if (temp != size || (!exp.X_unsigned && exp.X_add_number < 0)) |
252b5132 | 1775 | { |
e13bab5a | 1776 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1777 | ignore_rest_of_line (); |
e13bab5a | 1778 | goto out; |
252b5132 | 1779 | } |
f0e652b4 | 1780 | |
252b5132 | 1781 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1782 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1783 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1784 | { |
92757bc9 JB |
1785 | if (!S_IS_VOLATILE (symbolP)) |
1786 | { | |
1787 | symbolP = NULL; | |
1788 | as_bad (_("symbol `%s' is already defined"), name); | |
92757bc9 JB |
1789 | ignore_rest_of_line (); |
1790 | goto out; | |
1791 | } | |
89cdfe57 | 1792 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1793 | S_SET_SEGMENT (symbolP, undefined_section); |
1794 | S_SET_VALUE (symbolP, 0); | |
1795 | symbol_set_frag (symbolP, &zero_address_frag); | |
1796 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1797 | } |
f0e652b4 | 1798 | |
e13bab5a AM |
1799 | size = S_GET_VALUE (symbolP); |
1800 | if (size == 0) | |
1801 | size = temp; | |
1802 | else if (size != temp) | |
1803 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1804 | name, (long) size, (long) temp); | |
1805 | ||
e13bab5a AM |
1806 | if (comm_parse_extra != NULL) |
1807 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1808 | else |
1809 | { | |
e13bab5a | 1810 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1811 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1812 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
e13bab5a | 1813 | } |
252b5132 RH |
1814 | |
1815 | demand_empty_rest_of_line (); | |
e13bab5a | 1816 | out: |
252b5132 RH |
1817 | if (flag_mri) |
1818 | mri_comment_end (stop, stopc); | |
9fbb53c7 | 1819 | free (name); |
e13bab5a AM |
1820 | return symbolP; |
1821 | } | |
1822 | ||
1823 | void | |
1824 | s_comm (int ignore) | |
1825 | { | |
1826 | s_comm_internal (ignore, NULL); | |
1827 | } | |
252b5132 RH |
1828 | |
1829 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1830 | symbol with the appropriate name. We make s_space do the right | |
1831 | thing by increasing the size. */ | |
1832 | ||
1833 | void | |
39e6acbd | 1834 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1835 | { |
1836 | char *name; | |
1837 | char c; | |
1838 | char *alc = NULL; | |
1839 | symbolS *sym; | |
1840 | offsetT align; | |
1841 | char *stop = NULL; | |
fb25138b | 1842 | char stopc = 0; |
252b5132 | 1843 | |
041ff4dd | 1844 | if (!flag_mri) |
252b5132 RH |
1845 | { |
1846 | s_comm (0); | |
1847 | return; | |
1848 | } | |
1849 | ||
1850 | stop = mri_comment_field (&stopc); | |
1851 | ||
1852 | SKIP_WHITESPACE (); | |
1853 | ||
1854 | name = input_line_pointer; | |
3882b010 | 1855 | if (!ISDIGIT (*name)) |
d02603dc | 1856 | c = get_symbol_name (& name); |
252b5132 RH |
1857 | else |
1858 | { | |
1859 | do | |
1860 | { | |
1861 | ++input_line_pointer; | |
1862 | } | |
3882b010 | 1863 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1864 | |
252b5132 RH |
1865 | c = *input_line_pointer; |
1866 | *input_line_pointer = '\0'; | |
1867 | ||
1868 | if (line_label != NULL) | |
1869 | { | |
8860a416 TS |
1870 | alc = XNEWVEC (char, strlen (S_GET_NAME (line_label)) |
1871 | + (input_line_pointer - name) + 1); | |
252b5132 RH |
1872 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); |
1873 | name = alc; | |
1874 | } | |
1875 | } | |
1876 | ||
1877 | sym = symbol_find_or_make (name); | |
d02603dc | 1878 | c = restore_line_pointer (c); |
9fbb53c7 | 1879 | free (alc); |
252b5132 RH |
1880 | |
1881 | if (*input_line_pointer != ',') | |
1882 | align = 0; | |
1883 | else | |
1884 | { | |
1885 | ++input_line_pointer; | |
1886 | align = get_absolute_expression (); | |
1887 | } | |
1888 | ||
041ff4dd | 1889 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1890 | { |
0e389e77 | 1891 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1892 | mri_comment_end (stop, stopc); |
1893 | return; | |
1894 | } | |
1895 | ||
1896 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1897 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1898 | mri_common_symbol = sym; |
1899 | ||
1900 | #ifdef S_SET_ALIGN | |
1901 | if (align != 0) | |
1902 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1903 | #else |
1904 | (void) align; | |
252b5132 RH |
1905 | #endif |
1906 | ||
1907 | if (line_label != NULL) | |
1908 | { | |
2b47531b ILT |
1909 | expressionS exp; |
1910 | exp.X_op = O_symbol; | |
1911 | exp.X_add_symbol = sym; | |
1912 | exp.X_add_number = 0; | |
1913 | symbol_set_value_expression (line_label, &exp); | |
1914 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1915 | S_SET_SEGMENT (line_label, expr_section); |
1916 | } | |
1917 | ||
1918 | /* FIXME: We just ignore the small argument, which distinguishes | |
1919 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1920 | ||
1921 | /* Ignore the type and hptype. */ | |
1922 | if (*input_line_pointer == ',') | |
1923 | input_line_pointer += 2; | |
1924 | if (*input_line_pointer == ',') | |
1925 | input_line_pointer += 2; | |
1926 | ||
1927 | demand_empty_rest_of_line (); | |
1928 | ||
1929 | mri_comment_end (stop, stopc); | |
1930 | } | |
1931 | ||
1932 | void | |
39e6acbd | 1933 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1934 | { |
1935 | segT section; | |
3d540e93 | 1936 | int temp; |
252b5132 RH |
1937 | |
1938 | temp = get_absolute_expression (); | |
1939 | if (flag_readonly_data_in_text) | |
1940 | { | |
1941 | section = text_section; | |
1942 | temp += 1000; | |
1943 | } | |
1944 | else | |
1945 | section = data_section; | |
1946 | ||
1947 | subseg_set (section, (subsegT) temp); | |
1948 | ||
252b5132 RH |
1949 | demand_empty_rest_of_line (); |
1950 | } | |
1951 | ||
c39e89c3 JB |
1952 | /* Handle the .file pseudo-op. This default definition may be overridden by |
1953 | the object or CPU specific pseudo-ops. */ | |
252b5132 | 1954 | |
ecb4347a | 1955 | void |
c39e89c3 | 1956 | s_file_string (char *file) |
ecb4347a DJ |
1957 | { |
1958 | #ifdef LISTING | |
1959 | if (listing) | |
1960 | listing_source_file (file); | |
1961 | #endif | |
1962 | register_dependency (file); | |
1963 | #ifdef obj_app_file | |
c39e89c3 | 1964 | obj_app_file (file); |
ecb4347a DJ |
1965 | #endif |
1966 | } | |
1967 | ||
041ff4dd | 1968 | void |
c39e89c3 | 1969 | s_file (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 1970 | { |
3d540e93 | 1971 | char *s; |
252b5132 RH |
1972 | int length; |
1973 | ||
041ff4dd | 1974 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1975 | if ((s = demand_copy_string (&length)) != 0) |
1976 | { | |
c39e89c3 | 1977 | new_logical_line_flags (s, -1, 1); |
252b5132 RH |
1978 | |
1979 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1980 | backquote. */ |
252b5132 RH |
1981 | if (flag_m68k_mri |
1982 | && *input_line_pointer == '\'' | |
1983 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1984 | ++input_line_pointer; | |
1985 | ||
1986 | demand_empty_rest_of_line (); | |
c39e89c3 | 1987 | s_file_string (s); |
252b5132 RH |
1988 | } |
1989 | } | |
1990 | ||
9c705561 | 1991 | static bool |
e9fc6c21 AO |
1992 | get_linefile_number (int *flag) |
1993 | { | |
9c705561 JB |
1994 | expressionS exp; |
1995 | ||
e9fc6c21 AO |
1996 | SKIP_WHITESPACE (); |
1997 | ||
1998 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
9c705561 JB |
1999 | return false; |
2000 | ||
85aaf32e JB |
2001 | /* Don't mistakenly interpret octal numbers as line numbers. */ |
2002 | if (*input_line_pointer == '0') | |
2003 | { | |
2004 | *flag = 0; | |
2005 | ++input_line_pointer; | |
2006 | return true; | |
2007 | } | |
2008 | ||
9c705561 JB |
2009 | expression_and_evaluate (&exp); |
2010 | if (exp.X_op != O_constant) | |
2011 | return false; | |
2012 | ||
2013 | #if defined (BFD64) || LONG_MAX > INT_MAX | |
2014 | if (exp.X_add_number < INT_MIN || exp.X_add_number > INT_MAX) | |
2015 | return false; | |
2016 | #endif | |
e9fc6c21 | 2017 | |
9c705561 | 2018 | *flag = exp.X_add_number; |
e9fc6c21 | 2019 | |
9c705561 | 2020 | return true; |
e9fc6c21 AO |
2021 | } |
2022 | ||
c39e89c3 | 2023 | /* Handle the .linefile pseudo-op. This is automatically generated by |
252b5132 RH |
2024 | do_scrub_chars when a preprocessor # line comment is seen. This |
2025 | default definition may be overridden by the object or CPU specific | |
2026 | pseudo-ops. */ | |
2027 | ||
2028 | void | |
c39e89c3 | 2029 | s_linefile (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2030 | { |
e9fc6c21 | 2031 | char *file = NULL; |
2ee1792b | 2032 | int linenum, flags = 0; |
252b5132 RH |
2033 | |
2034 | /* The given number is that of the next line. */ | |
c39e89c3 | 2035 | if (!get_linefile_number (&linenum)) |
e9fc6c21 AO |
2036 | { |
2037 | ignore_rest_of_line (); | |
2038 | return; | |
2039 | } | |
2040 | ||
969f6a63 | 2041 | if (linenum < 0) |
252b5132 | 2042 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
2043 | Besides, it's silly. GCC however will generate a line number of |
2044 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
2045 | ||
fa94de6b | 2046 | # 0 "<built-in>" |
47837f8e NC |
2047 | |
2048 | We do not want to barf on this, especially since such files are used | |
2049 | in the GCC and GDB testsuites. So we check for negative line numbers | |
2050 | rather than non-positive line numbers. */ | |
0e389e77 | 2051 | as_warn (_("line numbers must be positive; line number %d rejected"), |
969f6a63 | 2052 | linenum); |
252b5132 RH |
2053 | else |
2054 | { | |
93e914b2 AO |
2055 | int length = 0; |
2056 | ||
c39e89c3 | 2057 | SKIP_WHITESPACE (); |
e9fc6c21 | 2058 | |
c39e89c3 JB |
2059 | if (*input_line_pointer == '"') |
2060 | file = demand_copy_string (&length); | |
2061 | else if (*input_line_pointer == '.') | |
2062 | { | |
2063 | /* buffer_and_nest() may insert this form. */ | |
2064 | ++input_line_pointer; | |
2065 | flags = 1 << 3; | |
93e914b2 AO |
2066 | } |
2067 | ||
c39e89c3 JB |
2068 | if (file) |
2069 | { | |
2070 | int this_flag; | |
2071 | ||
2072 | while (get_linefile_number (&this_flag)) | |
2073 | switch (this_flag) | |
2074 | { | |
2075 | /* From GCC's cpp documentation: | |
2076 | 1: start of a new file. | |
2077 | 2: returning to a file after having included another file. | |
2078 | 3: following text comes from a system header file. | |
2079 | 4: following text should be treated as extern "C". | |
2080 | ||
2081 | 4 is nonsensical for the assembler; 3, we don't care about, | |
2082 | so we ignore it just in case a system header file is | |
2083 | included while preprocessing assembly. So 1 and 2 are all | |
2084 | we care about, and they are mutually incompatible. | |
2085 | new_logical_line_flags() demands this. */ | |
2086 | case 1: | |
2087 | case 2: | |
2088 | if (flags && flags != (1 << this_flag)) | |
2089 | as_warn (_("incompatible flag %i in line directive"), | |
2090 | this_flag); | |
2091 | else | |
2092 | flags |= 1 << this_flag; | |
2093 | break; | |
2094 | ||
2095 | case 3: | |
2096 | case 4: | |
2097 | /* We ignore these. */ | |
2098 | break; | |
2099 | ||
2100 | default: | |
2101 | as_warn (_("unsupported flag %i in line directive"), | |
2102 | this_flag); | |
2103 | break; | |
2104 | } | |
2105 | ||
2106 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
2107 | file = NULL; | |
2108 | } | |
2109 | ||
2110 | if (file || flags) | |
e9fc6c21 | 2111 | { |
7545aa2d JB |
2112 | demand_empty_rest_of_line (); |
2113 | ||
2114 | /* read_a_source_file() will bump the line number only if the line | |
2115 | is terminated by '\n'. */ | |
2116 | if (input_line_pointer[-1] == '\n') | |
2117 | linenum--; | |
2118 | ||
969f6a63 | 2119 | new_logical_line_flags (file, linenum, flags); |
252b5132 | 2120 | #ifdef LISTING |
e9fc6c21 | 2121 | if (listing) |
969f6a63 | 2122 | listing_source_line (linenum); |
252b5132 | 2123 | #endif |
7545aa2d | 2124 | return; |
e9fc6c21 | 2125 | } |
252b5132 | 2126 | } |
7545aa2d | 2127 | ignore_rest_of_line (); |
252b5132 RH |
2128 | } |
2129 | ||
2130 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
2131 | read_a_source_file. */ | |
2132 | ||
2133 | void | |
39e6acbd | 2134 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2135 | { |
2136 | if (flag_mri) | |
2137 | { | |
2138 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 2139 | but we don't support that. */ |
252b5132 | 2140 | SKIP_WHITESPACE (); |
041ff4dd | 2141 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2142 | && *input_line_pointer != '*' |
2143 | && *input_line_pointer != '!') | |
2144 | as_warn (_("start address not supported")); | |
2145 | } | |
2146 | } | |
2147 | ||
2148 | /* Handle the .err pseudo-op. */ | |
2149 | ||
2150 | void | |
39e6acbd | 2151 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2152 | { |
2153 | as_bad (_(".err encountered")); | |
2154 | demand_empty_rest_of_line (); | |
d190d046 HPN |
2155 | } |
2156 | ||
2157 | /* Handle the .error and .warning pseudo-ops. */ | |
2158 | ||
2159 | void | |
2160 | s_errwarn (int err) | |
2161 | { | |
2162 | int len; | |
2163 | /* The purpose for the conditional assignment is not to | |
2164 | internationalize the directive itself, but that we need a | |
2165 | self-contained message, one that can be passed like the | |
2166 | demand_copy_C_string return value, and with no assumption on the | |
2167 | location of the name of the directive within the message. */ | |
6d4af3c2 | 2168 | const char *msg |
d190d046 HPN |
2169 | = (err ? _(".error directive invoked in source file") |
2170 | : _(".warning directive invoked in source file")); | |
2171 | ||
2172 | if (!is_it_end_of_statement ()) | |
2173 | { | |
2174 | if (*input_line_pointer != '\"') | |
2175 | { | |
2176 | as_bad (_("%s argument must be a string"), | |
2177 | err ? ".error" : ".warning"); | |
40a4d956 | 2178 | ignore_rest_of_line (); |
d190d046 HPN |
2179 | return; |
2180 | } | |
2181 | ||
2182 | msg = demand_copy_C_string (&len); | |
2183 | if (msg == NULL) | |
2184 | return; | |
2185 | } | |
2186 | ||
2187 | if (err) | |
2188 | as_bad ("%s", msg); | |
2189 | else | |
2190 | as_warn ("%s", msg); | |
2191 | demand_empty_rest_of_line (); | |
252b5132 RH |
2192 | } |
2193 | ||
2194 | /* Handle the MRI fail pseudo-op. */ | |
2195 | ||
2196 | void | |
39e6acbd | 2197 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2198 | { |
2199 | offsetT temp; | |
2200 | char *stop = NULL; | |
fb25138b | 2201 | char stopc = 0; |
252b5132 RH |
2202 | |
2203 | if (flag_mri) | |
2204 | stop = mri_comment_field (&stopc); | |
2205 | ||
2206 | temp = get_absolute_expression (); | |
2207 | if (temp >= 500) | |
2208 | as_warn (_(".fail %ld encountered"), (long) temp); | |
2209 | else | |
2210 | as_bad (_(".fail %ld encountered"), (long) temp); | |
2211 | ||
2212 | demand_empty_rest_of_line (); | |
2213 | ||
2214 | if (flag_mri) | |
2215 | mri_comment_end (stop, stopc); | |
2216 | } | |
2217 | ||
041ff4dd | 2218 | void |
39e6acbd | 2219 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2220 | { |
2221 | expressionS rep_exp; | |
2222 | long size = 1; | |
3d540e93 | 2223 | long fill = 0; |
252b5132 RH |
2224 | char *p; |
2225 | ||
2226 | #ifdef md_flush_pending_output | |
2227 | md_flush_pending_output (); | |
2228 | #endif | |
2229 | ||
cc3f603a JM |
2230 | #ifdef md_cons_align |
2231 | md_cons_align (1); | |
2232 | #endif | |
2233 | ||
4f2358bc | 2234 | expression (&rep_exp); |
252b5132 RH |
2235 | if (*input_line_pointer == ',') |
2236 | { | |
2237 | input_line_pointer++; | |
2238 | size = get_absolute_expression (); | |
2239 | if (*input_line_pointer == ',') | |
2240 | { | |
2241 | input_line_pointer++; | |
2242 | fill = get_absolute_expression (); | |
2243 | } | |
2244 | } | |
2245 | ||
2246 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
2247 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
2248 | if (size > BSD_FILL_SIZE_CROCK_8) | |
2249 | { | |
0e389e77 | 2250 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
2251 | size = BSD_FILL_SIZE_CROCK_8; |
2252 | } | |
2253 | if (size < 0) | |
2254 | { | |
0e389e77 | 2255 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
2256 | size = 0; |
2257 | } | |
2258 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
2259 | { | |
2260 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 2261 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
2262 | size = 0; |
2263 | } | |
d09f4d4a | 2264 | else if (size && !need_pass_2) |
252b5132 | 2265 | { |
d09f4d4a | 2266 | if (now_seg == absolute_section && rep_exp.X_op != O_constant) |
ec9ab52c | 2267 | { |
d09f4d4a AM |
2268 | as_bad (_("non-constant fill count for absolute section")); |
2269 | size = 0; | |
2270 | } | |
2271 | else if (now_seg == absolute_section && fill && rep_exp.X_add_number != 0) | |
2272 | { | |
2273 | as_bad (_("attempt to fill absolute section with non-zero value")); | |
2274 | size = 0; | |
ec9ab52c JB |
2275 | } |
2276 | else if (fill | |
2277 | && (rep_exp.X_op != O_constant || rep_exp.X_add_number != 0) | |
2278 | && in_bss ()) | |
d09f4d4a AM |
2279 | { |
2280 | as_bad (_("attempt to fill section `%s' with non-zero value"), | |
2281 | segment_name (now_seg)); | |
2282 | size = 0; | |
2283 | } | |
2284 | } | |
2285 | ||
2286 | if (size && !need_pass_2) | |
2287 | { | |
2288 | if (now_seg == absolute_section) | |
2289 | abs_section_offset += rep_exp.X_add_number * size; | |
ec9ab52c | 2290 | |
252b5132 RH |
2291 | if (rep_exp.X_op == O_constant) |
2292 | { | |
2293 | p = frag_var (rs_fill, (int) size, (int) size, | |
2294 | (relax_substateT) 0, (symbolS *) 0, | |
2295 | (offsetT) rep_exp.X_add_number, | |
2296 | (char *) 0); | |
2297 | } | |
2298 | else | |
2299 | { | |
2300 | /* We don't have a constant repeat count, so we can't use | |
2301 | rs_fill. We can get the same results out of rs_space, | |
2302 | but its argument is in bytes, so we must multiply the | |
2303 | repeat count by size. */ | |
2304 | ||
2305 | symbolS *rep_sym; | |
2306 | rep_sym = make_expr_symbol (&rep_exp); | |
2307 | if (size != 1) | |
2308 | { | |
2309 | expressionS size_exp; | |
2310 | size_exp.X_op = O_constant; | |
2311 | size_exp.X_add_number = size; | |
2312 | ||
2313 | rep_exp.X_op = O_multiply; | |
2314 | rep_exp.X_add_symbol = rep_sym; | |
2315 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
2316 | rep_exp.X_add_number = 0; | |
2317 | rep_sym = make_expr_symbol (&rep_exp); | |
2318 | } | |
2319 | ||
2320 | p = frag_var (rs_space, (int) size, (int) size, | |
2321 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
2322 | } | |
f0e652b4 | 2323 | |
252b5132 | 2324 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2325 | |
252b5132 | 2326 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2327 | flavoured AS. The following bizarre behaviour is to be |
2328 | compatible with above. I guess they tried to take up to 8 | |
2329 | bytes from a 4-byte expression and they forgot to sign | |
2330 | extend. */ | |
252b5132 RH |
2331 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2332 | md_number_to_chars (p, (valueT) fill, | |
2333 | (size > BSD_FILL_SIZE_CROCK_4 | |
2334 | ? BSD_FILL_SIZE_CROCK_4 | |
2335 | : (int) size)); | |
2336 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2337 | but emits no error message because it seems a legal thing to do. |
2338 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2339 | compiler. */ |
252b5132 RH |
2340 | } |
2341 | demand_empty_rest_of_line (); | |
2342 | } | |
2343 | ||
041ff4dd | 2344 | void |
39e6acbd | 2345 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2346 | { |
2347 | char *name; | |
2348 | int c; | |
2349 | symbolS *symbolP; | |
2350 | char *stop = NULL; | |
fb25138b | 2351 | char stopc = 0; |
252b5132 RH |
2352 | |
2353 | if (flag_mri) | |
2354 | stop = mri_comment_field (&stopc); | |
2355 | ||
2356 | do | |
2357 | { | |
7bfd842d NC |
2358 | if ((name = read_symbol_name ()) == NULL) |
2359 | return; | |
2360 | ||
252b5132 | 2361 | symbolP = symbol_find_or_make (name); |
58b5739a RH |
2362 | S_SET_EXTERNAL (symbolP); |
2363 | ||
252b5132 | 2364 | SKIP_WHITESPACE (); |
58b5739a | 2365 | c = *input_line_pointer; |
252b5132 RH |
2366 | if (c == ',') |
2367 | { | |
2368 | input_line_pointer++; | |
2369 | SKIP_WHITESPACE (); | |
0e389e77 | 2370 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2371 | c = '\n'; |
2372 | } | |
7bfd842d NC |
2373 | |
2374 | free (name); | |
252b5132 RH |
2375 | } |
2376 | while (c == ','); | |
2377 | ||
2378 | demand_empty_rest_of_line (); | |
2379 | ||
2380 | if (flag_mri) | |
2381 | mri_comment_end (stop, stopc); | |
2382 | } | |
2383 | ||
2384 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
2385 | ||
2386 | void | |
39e6acbd | 2387 | s_irp (int irpc) |
252b5132 | 2388 | { |
3b4dbbbf TS |
2389 | char * eol; |
2390 | const char * file; | |
252b5132 RH |
2391 | unsigned int line; |
2392 | sb s; | |
2393 | const char *err; | |
2394 | sb out; | |
2395 | ||
3b4dbbbf | 2396 | file = as_where (&line); |
252b5132 | 2397 | |
40a4d956 | 2398 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2399 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2400 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2401 | input_line_pointer = eol; | |
252b5132 RH |
2402 | |
2403 | sb_new (&out); | |
2404 | ||
7592cfd7 | 2405 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2406 | if (err != NULL) |
2407 | as_bad_where (file, line, "%s", err); | |
2408 | ||
2409 | sb_kill (&s); | |
2410 | ||
657edeab | 2411 | input_scrub_include_sb (&out, input_line_pointer, expanding_repeat); |
252b5132 RH |
2412 | sb_kill (&out); |
2413 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2414 | } | |
2415 | ||
2416 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2417 | the section to only be linked once. However, this is not supported | |
2418 | by most object file formats. This takes an optional argument, | |
2419 | which is what to do about duplicates. */ | |
2420 | ||
2421 | void | |
39e6acbd | 2422 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2423 | { |
2424 | enum linkonce_type type; | |
2425 | ||
2426 | SKIP_WHITESPACE (); | |
2427 | ||
2428 | type = LINKONCE_DISCARD; | |
2429 | ||
041ff4dd | 2430 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2431 | { |
2432 | char *s; | |
2433 | char c; | |
2434 | ||
d02603dc | 2435 | c = get_symbol_name (& s); |
252b5132 RH |
2436 | if (strcasecmp (s, "discard") == 0) |
2437 | type = LINKONCE_DISCARD; | |
2438 | else if (strcasecmp (s, "one_only") == 0) | |
2439 | type = LINKONCE_ONE_ONLY; | |
2440 | else if (strcasecmp (s, "same_size") == 0) | |
2441 | type = LINKONCE_SAME_SIZE; | |
2442 | else if (strcasecmp (s, "same_contents") == 0) | |
2443 | type = LINKONCE_SAME_CONTENTS; | |
2444 | else | |
2445 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2446 | ||
d02603dc | 2447 | (void) restore_line_pointer (c); |
252b5132 RH |
2448 | } |
2449 | ||
2450 | #ifdef obj_handle_link_once | |
2451 | obj_handle_link_once (type); | |
2452 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2453 | { |
2454 | flagword flags; | |
2455 | ||
2456 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2457 | as_warn (_(".linkonce is not supported for this object file format")); | |
2458 | ||
fd361982 | 2459 | flags = bfd_section_flags (now_seg); |
252b5132 RH |
2460 | flags |= SEC_LINK_ONCE; |
2461 | switch (type) | |
2462 | { | |
2463 | default: | |
2464 | abort (); | |
2465 | case LINKONCE_DISCARD: | |
2466 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2467 | break; | |
2468 | case LINKONCE_ONE_ONLY: | |
2469 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2470 | break; | |
2471 | case LINKONCE_SAME_SIZE: | |
2472 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2473 | break; | |
2474 | case LINKONCE_SAME_CONTENTS: | |
2475 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2476 | break; | |
2477 | } | |
fd361982 | 2478 | if (!bfd_set_section_flags (now_seg, flags)) |
252b5132 RH |
2479 | as_bad (_("bfd_set_section_flags: %s"), |
2480 | bfd_errmsg (bfd_get_error ())); | |
2481 | } | |
252b5132 RH |
2482 | #endif /* ! defined (obj_handle_link_once) */ |
2483 | ||
2484 | demand_empty_rest_of_line (); | |
2485 | } | |
2486 | ||
e13bab5a | 2487 | void |
9136aa49 | 2488 | bss_alloc (symbolS *symbolP, addressT size, unsigned int align) |
252b5132 | 2489 | { |
e13bab5a | 2490 | char *pfrag; |
252b5132 RH |
2491 | segT current_seg = now_seg; |
2492 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2493 | segT bss_seg = bss_section; |
2494 | ||
252b5132 RH |
2495 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2496 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2497 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2498 | { | |
2499 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2500 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2501 | { |
2502 | bss_seg = subseg_new (".sbss", 1); | |
2503 | seg_info (bss_seg)->bss = 1; | |
a4dd6c97 | 2504 | if (!bfd_set_section_flags (bss_seg, SEC_ALLOC | SEC_SMALL_DATA)) |
252b5132 RH |
2505 | as_warn (_("error setting flags for \".sbss\": %s"), |
2506 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2507 | } |
2508 | } | |
2509 | #endif | |
e13bab5a | 2510 | subseg_set (bss_seg, 1); |
8684e216 | 2511 | |
9136aa49 | 2512 | if (align > OCTETS_PER_BYTE_POWER) |
041ff4dd | 2513 | { |
e13bab5a AM |
2514 | record_alignment (bss_seg, align); |
2515 | frag_align (align, 0, 0); | |
041ff4dd | 2516 | } |
252b5132 | 2517 | |
e13bab5a AM |
2518 | /* Detach from old frag. */ |
2519 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2520 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2521 | |
e13bab5a | 2522 | symbol_set_frag (symbolP, frag_now); |
5947daaf | 2523 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size * OCTETS_PER_BYTE, NULL); |
e13bab5a | 2524 | *pfrag = 0; |
f0e652b4 | 2525 | |
e13bab5a AM |
2526 | #ifdef S_SET_SIZE |
2527 | S_SET_SIZE (symbolP, size); | |
2528 | #endif | |
2529 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2530 | |
e13bab5a AM |
2531 | #ifdef OBJ_COFF |
2532 | /* The symbol may already have been created with a preceding | |
2533 | ".globl" directive -- be careful not to step on storage class | |
2534 | in that case. Otherwise, set it to static. */ | |
2535 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2536 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2537 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2538 | |
e13bab5a AM |
2539 | subseg_set (current_seg, current_subseg); |
2540 | } | |
f0e652b4 | 2541 | |
e13bab5a AM |
2542 | offsetT |
2543 | parse_align (int align_bytes) | |
2544 | { | |
2545 | expressionS exp; | |
2546 | addressT align; | |
252b5132 | 2547 | |
e13bab5a AM |
2548 | SKIP_WHITESPACE (); |
2549 | if (*input_line_pointer != ',') | |
2550 | { | |
2551 | no_align: | |
2552 | as_bad (_("expected alignment after size")); | |
2553 | ignore_rest_of_line (); | |
2554 | return -1; | |
2555 | } | |
f0e652b4 | 2556 | |
e13bab5a AM |
2557 | input_line_pointer++; |
2558 | SKIP_WHITESPACE (); | |
f0e652b4 | 2559 | |
e13bab5a AM |
2560 | align = get_absolute_expr (&exp); |
2561 | if (exp.X_op == O_absent) | |
2562 | goto no_align; | |
2563 | ||
95b83567 | 2564 | if (!exp.X_unsigned && exp.X_add_number < 0) |
e13bab5a AM |
2565 | { |
2566 | as_warn (_("alignment negative; 0 assumed")); | |
2567 | align = 0; | |
041ff4dd | 2568 | } |
e13bab5a AM |
2569 | |
2570 | if (align_bytes && align != 0) | |
252b5132 | 2571 | { |
e13bab5a AM |
2572 | /* convert to a power of 2 alignment */ |
2573 | unsigned int alignp2 = 0; | |
2574 | while ((align & 1) == 0) | |
2575 | align >>= 1, ++alignp2; | |
2576 | if (align != 1) | |
252b5132 | 2577 | { |
e13bab5a AM |
2578 | as_bad (_("alignment not a power of 2")); |
2579 | ignore_rest_of_line (); | |
2580 | return -1; | |
252b5132 | 2581 | } |
e13bab5a | 2582 | align = alignp2; |
252b5132 | 2583 | } |
e13bab5a AM |
2584 | return align; |
2585 | } | |
252b5132 | 2586 | |
e13bab5a AM |
2587 | /* Called from s_comm_internal after symbol name and size have been |
2588 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2589 | 1 if this was a ".bss" directive which has a 3rd argument | |
2590 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2591 | with alignment in bytes. */ | |
252b5132 | 2592 | |
13c56984 | 2593 | symbolS * |
e13bab5a AM |
2594 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2595 | { | |
2596 | addressT align = 0; | |
252b5132 | 2597 | |
e13bab5a AM |
2598 | if (needs_align) |
2599 | { | |
2600 | align = parse_align (needs_align - 1); | |
2601 | if (align == (addressT) -1) | |
2602 | return NULL; | |
252b5132 RH |
2603 | } |
2604 | else | |
e13bab5a AM |
2605 | /* Assume some objects may require alignment on some systems. */ |
2606 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2607 | |
e13bab5a AM |
2608 | bss_alloc (symbolP, size, align); |
2609 | return symbolP; | |
041ff4dd | 2610 | } |
252b5132 RH |
2611 | |
2612 | void | |
39e6acbd | 2613 | s_lcomm (int needs_align) |
252b5132 | 2614 | { |
e13bab5a | 2615 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2616 | } |
2617 | ||
041ff4dd | 2618 | void |
39e6acbd | 2619 | s_lcomm_bytes (int needs_align) |
252b5132 | 2620 | { |
e13bab5a | 2621 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2622 | } |
2623 | ||
041ff4dd | 2624 | void |
39e6acbd | 2625 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2626 | { |
3d540e93 | 2627 | char *name; |
252b5132 | 2628 | expressionS exp; |
3d540e93 | 2629 | symbolS *symbolP; |
252b5132 | 2630 | |
041ff4dd | 2631 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
7bfd842d NC |
2632 | if ((name = read_symbol_name ()) == NULL) |
2633 | return; | |
f0e652b4 | 2634 | |
252b5132 RH |
2635 | if (*input_line_pointer != ',') |
2636 | { | |
0e389e77 | 2637 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 2638 | goto err_out; |
252b5132 | 2639 | } |
f0e652b4 | 2640 | |
252b5132 | 2641 | input_line_pointer++; |
9497f5ac | 2642 | expression_and_evaluate (&exp); |
f0e652b4 | 2643 | |
252b5132 RH |
2644 | if (exp.X_op != O_constant |
2645 | && exp.X_op != O_register) | |
2646 | { | |
2647 | as_bad (_("bad expression")); | |
7bfd842d | 2648 | goto err_out; |
252b5132 | 2649 | } |
f0e652b4 | 2650 | |
252b5132 RH |
2651 | symbolP = symbol_find_or_make (name); |
2652 | ||
86ebace2 | 2653 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2654 | { |
2655 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2656 | keep the "external" bit. */ |
252b5132 RH |
2657 | S_SET_SEGMENT (symbolP, |
2658 | (exp.X_op == O_constant | |
2659 | ? absolute_section | |
2660 | : reg_section)); | |
2661 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2662 | } | |
2663 | else | |
2664 | { | |
0e389e77 | 2665 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2666 | } |
f0e652b4 | 2667 | |
252b5132 | 2668 | demand_empty_rest_of_line (); |
7bfd842d NC |
2669 | free (name); |
2670 | return; | |
2671 | ||
2672 | err_out: | |
2673 | ignore_rest_of_line (); | |
2674 | free (name); | |
2675 | return; | |
041ff4dd | 2676 | } |
252b5132 | 2677 | |
0822d075 NC |
2678 | /* Read a line into an sb. Returns the character that ended the line |
2679 | or zero if there are no more lines. */ | |
252b5132 RH |
2680 | |
2681 | static int | |
7592cfd7 | 2682 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2683 | { |
40a4d956 | 2684 | char *eol; |
252b5132 RH |
2685 | |
2686 | if (input_line_pointer[-1] == '\n') | |
2687 | bump_line_counters (); | |
2688 | ||
2689 | if (input_line_pointer >= buffer_limit) | |
2690 | { | |
2691 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2692 | if (buffer_limit == 0) | |
2693 | return 0; | |
2694 | } | |
2695 | ||
7592cfd7 | 2696 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2697 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2698 | input_line_pointer = eol; | |
f0e652b4 | 2699 | |
0822d075 NC |
2700 | /* Don't skip multiple end-of-line characters, because that breaks support |
2701 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2702 | characters but isn't. Instead just skip one end of line character and | |
2703 | return the character skipped so that the caller can re-insert it if | |
2704 | necessary. */ | |
40a4d956 | 2705 | return *input_line_pointer++; |
252b5132 RH |
2706 | } |
2707 | ||
39a45edc | 2708 | static size_t |
7592cfd7 NC |
2709 | get_non_macro_line_sb (sb *line) |
2710 | { | |
2711 | return get_line_sb (line, 0); | |
2712 | } | |
2713 | ||
39a45edc | 2714 | static size_t |
7592cfd7 NC |
2715 | get_macro_line_sb (sb *line) |
2716 | { | |
2717 | return get_line_sb (line, 1); | |
2718 | } | |
2719 | ||
fea17916 | 2720 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2721 | |
2722 | void | |
39e6acbd | 2723 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2724 | { |
3b4dbbbf | 2725 | char *eol; |
252b5132 | 2726 | sb s; |
c026360c | 2727 | macro_entry *macro; |
252b5132 | 2728 | |
40a4d956 | 2729 | eol = find_end_of_line (input_line_pointer, 0); |
d2ae702c | 2730 | sb_build (&s, eol - input_line_pointer); |
40a4d956 JB |
2731 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); |
2732 | input_line_pointer = eol; | |
252b5132 | 2733 | |
252b5132 | 2734 | if (line_label != NULL) |
360e86f1 JB |
2735 | { |
2736 | sb label; | |
d2ae702c | 2737 | size_t len; |
c026360c | 2738 | const char *name; |
252b5132 | 2739 | |
d2ae702c L |
2740 | name = S_GET_NAME (line_label); |
2741 | len = strlen (name); | |
2742 | sb_build (&label, len); | |
2743 | sb_add_buffer (&label, name, len); | |
c026360c | 2744 | macro = define_macro (&s, &label, get_macro_line_sb); |
360e86f1 JB |
2745 | sb_kill (&label); |
2746 | } | |
2747 | else | |
c026360c AM |
2748 | macro = define_macro (&s, NULL, get_macro_line_sb); |
2749 | if (macro != NULL) | |
252b5132 RH |
2750 | { |
2751 | if (line_label != NULL) | |
2752 | { | |
5e75c3ab | 2753 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2754 | S_SET_VALUE (line_label, 0); |
2b47531b | 2755 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2756 | } |
2757 | ||
abd63a32 | 2758 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
c026360c | 2759 | && str_hash_find (po_hash, macro->name) != NULL) |
041ff4dd | 2760 | || (!flag_m68k_mri |
c026360c AM |
2761 | && macro->name[0] == '.' |
2762 | && str_hash_find (po_hash, macro->name + 1) != NULL)) | |
2763 | { | |
2764 | as_warn_where (macro->file, macro->line, | |
2765 | _("attempt to redefine pseudo-op `%s' ignored"), | |
2766 | macro->name); | |
2767 | str_hash_delete (macro_hash, macro->name); | |
2768 | } | |
252b5132 RH |
2769 | } |
2770 | ||
2771 | sb_kill (&s); | |
2772 | } | |
2773 | ||
2774 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2775 | expansion. */ | |
2776 | ||
2777 | void | |
39e6acbd | 2778 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2779 | { |
5808f4a6 NC |
2780 | if (macro_nest) |
2781 | { | |
2782 | cond_exit_macro (macro_nest); | |
2783 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2784 | } | |
2785 | else | |
2786 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2787 | } |
2788 | ||
2789 | /* Switch in and out of MRI mode. */ | |
2790 | ||
2791 | void | |
39e6acbd | 2792 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2793 | { |
3d540e93 NC |
2794 | int on; |
2795 | #ifdef MRI_MODE_CHANGE | |
2796 | int old_flag; | |
2797 | #endif | |
252b5132 RH |
2798 | |
2799 | on = get_absolute_expression (); | |
3d540e93 | 2800 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2801 | old_flag = flag_mri; |
3d540e93 | 2802 | #endif |
252b5132 RH |
2803 | if (on != 0) |
2804 | { | |
2805 | flag_mri = 1; | |
2806 | #ifdef TC_M68K | |
2807 | flag_m68k_mri = 1; | |
2808 | #endif | |
252b5132 RH |
2809 | } |
2810 | else | |
2811 | { | |
2812 | flag_mri = 0; | |
abd63a32 | 2813 | #ifdef TC_M68K |
252b5132 | 2814 | flag_m68k_mri = 0; |
abd63a32 | 2815 | #endif |
252b5132 RH |
2816 | } |
2817 | ||
2818 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2819 | update the operator rankings. */ | |
2820 | expr_set_precedence (); | |
2821 | ||
2822 | #ifdef MRI_MODE_CHANGE | |
2823 | if (on != old_flag) | |
2824 | MRI_MODE_CHANGE (on); | |
2825 | #endif | |
2826 | ||
2827 | demand_empty_rest_of_line (); | |
2828 | } | |
2829 | ||
2830 | /* Handle changing the location counter. */ | |
2831 | ||
2832 | static void | |
39e6acbd | 2833 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 | 2834 | { |
259af69e AM |
2835 | if (segment != now_seg |
2836 | && segment != absolute_section | |
2837 | && segment != expr_section) | |
0e389e77 | 2838 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2839 | |
2840 | if (now_seg == absolute_section) | |
2841 | { | |
2842 | if (fill != 0) | |
2843 | as_warn (_("ignoring fill value in absolute section")); | |
2844 | if (exp->X_op != O_constant) | |
2845 | { | |
2846 | as_bad (_("only constant offsets supported in absolute section")); | |
2847 | exp->X_add_number = 0; | |
2848 | } | |
2849 | abs_section_offset = exp->X_add_number; | |
2850 | } | |
2851 | else | |
2852 | { | |
2853 | char *p; | |
2289f85d AM |
2854 | symbolS *sym = exp->X_add_symbol; |
2855 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2856 | |
ec9ab52c JB |
2857 | if (fill && in_bss ()) |
2858 | as_warn (_("ignoring fill value in section `%s'"), | |
2859 | segment_name (now_seg)); | |
2860 | ||
2289f85d AM |
2861 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2862 | { | |
2863 | /* Handle complex expressions. */ | |
2864 | sym = make_expr_symbol (exp); | |
2865 | off = 0; | |
2866 | } | |
2867 | ||
2868 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2869 | *p = fill; |
2870 | } | |
2871 | } | |
2872 | ||
041ff4dd | 2873 | void |
39e6acbd | 2874 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2875 | { |
3d540e93 | 2876 | segT segment; |
252b5132 | 2877 | expressionS exp; |
3d540e93 | 2878 | long temp_fill; |
252b5132 RH |
2879 | |
2880 | #ifdef md_flush_pending_output | |
2881 | md_flush_pending_output (); | |
2882 | #endif | |
2883 | ||
2884 | /* The m68k MRI assembler has a different meaning for .org. It | |
2885 | means to create an absolute section at a given address. We can't | |
2886 | support that--use a linker script instead. */ | |
2887 | if (flag_m68k_mri) | |
2888 | { | |
2889 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2890 | ignore_rest_of_line (); | |
2891 | return; | |
2892 | } | |
2893 | ||
2894 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2895 | thing as a sub-segment-relative origin. Any absolute origin is | |
2896 | given a warning, then assumed to be segment-relative. Any | |
2897 | segmented origin expression ("foo+42") had better be in the right | |
2898 | segment or the .org is ignored. | |
2899 | ||
2900 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2901 | we never know sub-segment sizes when we are reading code. BSD | |
2902 | will crash trying to emit negative numbers of filler bytes in | |
2903 | certain .orgs. We don't crash, but see as-write for that code. | |
2904 | ||
2905 | Don't make frag if need_pass_2==1. */ | |
2906 | segment = get_known_segmented_expression (&exp); | |
2907 | if (*input_line_pointer == ',') | |
2908 | { | |
2909 | input_line_pointer++; | |
2910 | temp_fill = get_absolute_expression (); | |
2911 | } | |
2912 | else | |
2913 | temp_fill = 0; | |
2914 | ||
2915 | if (!need_pass_2) | |
2916 | do_org (segment, &exp, temp_fill); | |
2917 | ||
2918 | demand_empty_rest_of_line (); | |
041ff4dd | 2919 | } |
252b5132 RH |
2920 | |
2921 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2922 | called by the obj-format routine which handles section changing | |
2923 | when in MRI mode. It will create a new section, and return it. It | |
2924 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2925 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2926 | |
2927 | void | |
39e6acbd | 2928 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2929 | { |
2930 | #ifdef TC_M68K | |
2931 | ||
2932 | char *name; | |
2933 | char c; | |
2934 | segT seg; | |
2935 | ||
2936 | SKIP_WHITESPACE (); | |
041ff4dd | 2937 | |
252b5132 | 2938 | name = input_line_pointer; |
3882b010 | 2939 | if (!ISDIGIT (*name)) |
d02603dc | 2940 | c = get_symbol_name (& name); |
252b5132 RH |
2941 | else |
2942 | { | |
2943 | do | |
2944 | { | |
2945 | ++input_line_pointer; | |
2946 | } | |
3882b010 | 2947 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2948 | |
252b5132 RH |
2949 | c = *input_line_pointer; |
2950 | *input_line_pointer = '\0'; | |
2951 | } | |
2952 | ||
2953 | name = xstrdup (name); | |
2954 | ||
d02603dc | 2955 | c = restore_line_pointer (c); |
252b5132 RH |
2956 | |
2957 | seg = subseg_new (name, 0); | |
2958 | ||
d02603dc | 2959 | if (c == ',') |
252b5132 | 2960 | { |
9136aa49 | 2961 | unsigned int align; |
252b5132 RH |
2962 | |
2963 | ++input_line_pointer; | |
2964 | align = get_absolute_expression (); | |
2965 | record_alignment (seg, align); | |
2966 | } | |
2967 | ||
2968 | *type = 'C'; | |
2969 | if (*input_line_pointer == ',') | |
2970 | { | |
2971 | c = *++input_line_pointer; | |
3882b010 | 2972 | c = TOUPPER (c); |
252b5132 RH |
2973 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2974 | *type = c; | |
2975 | else | |
2976 | as_bad (_("unrecognized section type")); | |
2977 | ++input_line_pointer; | |
2978 | ||
252b5132 RH |
2979 | { |
2980 | flagword flags; | |
2981 | ||
2982 | flags = SEC_NO_FLAGS; | |
2983 | if (*type == 'C') | |
2984 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2985 | else if (*type == 'D' || *type == 'M') | |
2986 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2987 | else if (*type == 'R') | |
2988 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2989 | if (flags != SEC_NO_FLAGS) | |
2990 | { | |
fd361982 | 2991 | if (!bfd_set_section_flags (seg, flags)) |
252b5132 | 2992 | as_warn (_("error setting flags for \"%s\": %s"), |
fd361982 | 2993 | bfd_section_name (seg), |
252b5132 RH |
2994 | bfd_errmsg (bfd_get_error ())); |
2995 | } | |
2996 | } | |
252b5132 RH |
2997 | } |
2998 | ||
2999 | /* Ignore the HP type. */ | |
3000 | if (*input_line_pointer == ',') | |
3001 | input_line_pointer += 2; | |
3002 | ||
3003 | demand_empty_rest_of_line (); | |
3004 | ||
3005 | #else /* ! TC_M68K */ | |
252b5132 RH |
3006 | /* The MRI assembler seems to use different forms of .sect for |
3007 | different targets. */ | |
3008 | as_bad ("MRI mode not supported for this target"); | |
3009 | ignore_rest_of_line (); | |
252b5132 RH |
3010 | #endif /* ! TC_M68K */ |
3011 | } | |
3012 | ||
3013 | /* Handle the .print pseudo-op. */ | |
3014 | ||
3015 | void | |
39e6acbd | 3016 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3017 | { |
3018 | char *s; | |
3019 | int len; | |
3020 | ||
3021 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
3022 | if (s != NULL) |
3023 | printf ("%s\n", s); | |
252b5132 RH |
3024 | demand_empty_rest_of_line (); |
3025 | } | |
3026 | ||
3027 | /* Handle the .purgem pseudo-op. */ | |
3028 | ||
3029 | void | |
39e6acbd | 3030 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3031 | { |
3032 | if (is_it_end_of_statement ()) | |
3033 | { | |
3034 | demand_empty_rest_of_line (); | |
3035 | return; | |
3036 | } | |
3037 | ||
3038 | do | |
3039 | { | |
3040 | char *name; | |
3041 | char c; | |
3042 | ||
3043 | SKIP_WHITESPACE (); | |
d02603dc | 3044 | c = get_symbol_name (& name); |
252b5132 RH |
3045 | delete_macro (name); |
3046 | *input_line_pointer = c; | |
d02603dc | 3047 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
3048 | } |
3049 | while (*input_line_pointer++ == ','); | |
3050 | ||
3051 | --input_line_pointer; | |
3052 | demand_empty_rest_of_line (); | |
3053 | } | |
3054 | ||
057f53c1 | 3055 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 3056 | |
057f53c1 JB |
3057 | static void |
3058 | s_bad_end (int endr) | |
7f28ab9d | 3059 | { |
cc643b88 | 3060 | as_warn (_(".end%c encountered without preceding %s"), |
057f53c1 JB |
3061 | endr ? 'r' : 'm', |
3062 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
3063 | demand_empty_rest_of_line (); |
3064 | } | |
3065 | ||
3066 | /* Handle the .rept pseudo-op. */ | |
3067 | ||
252b5132 | 3068 | void |
39e6acbd | 3069 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3070 | { |
808811a3 | 3071 | size_t count; |
252b5132 | 3072 | |
808811a3 | 3073 | count = (size_t) get_absolute_expression (); |
252b5132 | 3074 | |
7e6d6b62 | 3075 | do_repeat (count, "REPT", "ENDR", NULL); |
6dc19fc4 TW |
3076 | } |
3077 | ||
3078 | /* This function provides a generic repeat block implementation. It allows | |
7e6d6b62 JB |
3079 | different directives to be used as the start/end keys. Any text matching |
3080 | the optional EXPANDER in the block is replaced by the remaining iteration | |
3081 | count. */ | |
6dc19fc4 TW |
3082 | |
3083 | void | |
7e6d6b62 JB |
3084 | do_repeat (size_t count, const char *start, const char *end, |
3085 | const char *expander) | |
6dc19fc4 TW |
3086 | { |
3087 | sb one; | |
3088 | sb many; | |
3089 | ||
808811a3 NC |
3090 | if (((ssize_t) count) < 0) |
3091 | { | |
3092 | as_bad (_("negative count for %s - ignored"), start); | |
3093 | count = 0; | |
3094 | } | |
3095 | ||
252b5132 | 3096 | sb_new (&one); |
7592cfd7 | 3097 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 3098 | { |
6dc19fc4 | 3099 | as_bad (_("%s without %s"), start, end); |
0eb3224b | 3100 | sb_kill (&one); |
252b5132 RH |
3101 | return; |
3102 | } | |
3103 | ||
7e6d6b62 | 3104 | if (expander == NULL || strstr (one.ptr, expander) == NULL) |
808811a3 | 3105 | { |
7e6d6b62 JB |
3106 | sb_build (&many, count * one.len); |
3107 | while (count-- > 0) | |
3108 | sb_add_sb (&many, &one); | |
808811a3 | 3109 | } |
7e6d6b62 | 3110 | else |
c7927a3c | 3111 | { |
7e6d6b62 | 3112 | sb_new (&many); |
c7927a3c | 3113 | |
c7927a3c NC |
3114 | while (count -- > 0) |
3115 | { | |
3116 | int len; | |
3117 | char * sub; | |
3118 | sb processed; | |
3119 | ||
d2ae702c | 3120 | sb_build (& processed, one.len); |
c7927a3c NC |
3121 | sb_add_sb (& processed, & one); |
3122 | sub = strstr (processed.ptr, expander); | |
808811a3 | 3123 | len = sprintf (sub, "%lu", (unsigned long) count); |
c7927a3c | 3124 | gas_assert (len < 8); |
9dcbfff1 AS |
3125 | memmove (sub + len, sub + 8, |
3126 | processed.ptr + processed.len - (sub + 8)); | |
c7927a3c NC |
3127 | processed.len -= (8 - len); |
3128 | sb_add_sb (& many, & processed); | |
3129 | sb_kill (& processed); | |
3130 | } | |
3131 | } | |
c7927a3c NC |
3132 | |
3133 | sb_kill (&one); | |
3134 | ||
657edeab | 3135 | input_scrub_include_sb (&many, input_line_pointer, expanding_repeat); |
c7927a3c NC |
3136 | sb_kill (&many); |
3137 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3138 | } | |
3139 | ||
6dc19fc4 TW |
3140 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3141 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3142 | are properly nested. |
6dc19fc4 TW |
3143 | |
3144 | This function makes it easier to implement a premature "break" out of the | |
3145 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3146 | such as line substitutions. */ |
6dc19fc4 TW |
3147 | |
3148 | void | |
39e6acbd | 3149 | end_repeat (int extra) |
6dc19fc4 TW |
3150 | { |
3151 | cond_exit_macro (macro_nest); | |
3152 | while (extra-- >= 0) | |
3153 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3154 | } | |
3155 | ||
be95a9c1 | 3156 | static void |
9497f5ac | 3157 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3158 | { |
3159 | symbolS *symbolP; | |
3160 | ||
3161 | if (name[0] == '.' && name[1] == '\0') | |
3162 | { | |
3163 | /* Turn '. = mumble' into a .org mumble. */ | |
3164 | segT segment; | |
3165 | expressionS exp; | |
3166 | ||
3167 | segment = get_known_segmented_expression (&exp); | |
3168 | ||
3169 | if (!need_pass_2) | |
3170 | do_org (segment, &exp, 0); | |
3171 | ||
3172 | return; | |
3173 | } | |
3174 | ||
3175 | if ((symbolP = symbol_find (name)) == NULL | |
3176 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3177 | { | |
3178 | symbolP = symbol_find_or_make (name); | |
3179 | #ifndef NO_LISTING | |
3180 | /* When doing symbol listings, play games with dummy fragments living | |
3181 | outside the normal fragment chain to record the file and line info | |
3182 | for this symbol. */ | |
3183 | if (listing & LISTING_SYMBOLS) | |
3184 | { | |
3185 | extern struct list_info_struct *listing_tail; | |
714ccdeb | 3186 | fragS *dummy_frag = notes_calloc (1, sizeof (*dummy_frag)); |
be95a9c1 AM |
3187 | dummy_frag->line = listing_tail; |
3188 | dummy_frag->fr_symbol = symbolP; | |
3189 | symbol_set_frag (symbolP, dummy_frag); | |
3190 | } | |
3191 | #endif | |
76bd66cf | 3192 | #if defined (OBJ_COFF) && !defined (TE_PE) |
31d20a21 AM |
3193 | /* "set" symbols are local unless otherwise specified. */ |
3194 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3195 | #endif |
3196 | } | |
3197 | ||
6a2b6326 | 3198 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac | 3199 | { |
9497f5ac | 3200 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) |
6885131b | 3201 | && !S_CAN_BE_REDEFINED (symbolP)) |
9497f5ac NC |
3202 | { |
3203 | as_bad (_("symbol `%s' is already defined"), name); | |
62bd6b5f AM |
3204 | ignore_rest_of_line (); |
3205 | input_line_pointer--; | |
3206 | return; | |
9497f5ac NC |
3207 | } |
3208 | /* If the symbol is volatile, copy the symbol and replace the | |
3209 | original with the copy, so that previous uses of the symbol will | |
3210 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3211 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3212 | symbolP = symbol_clone (symbolP, 1); |
3213 | } | |
3214 | ||
3215 | if (mode == 0) | |
3216 | S_SET_VOLATILE (symbolP); | |
3217 | else if (mode < 0) | |
3218 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3219 | |
3220 | pseudo_set (symbolP); | |
be95a9c1 AM |
3221 | } |
3222 | ||
9497f5ac NC |
3223 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3224 | then this is .equiv, and it is an error if the symbol is already | |
3225 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3226 | reference. */ | |
252b5132 | 3227 | |
041ff4dd | 3228 | void |
39e6acbd | 3229 | s_set (int equiv) |
252b5132 | 3230 | { |
be95a9c1 | 3231 | char *name; |
252b5132 | 3232 | |
041ff4dd NC |
3233 | /* Especial apologies for the random logic: |
3234 | this just grew, and could be parsed much more simply! | |
3235 | Dean in haste. */ | |
7bfd842d NC |
3236 | if ((name = read_symbol_name ()) == NULL) |
3237 | return; | |
252b5132 RH |
3238 | |
3239 | if (*input_line_pointer != ',') | |
3240 | { | |
0e389e77 | 3241 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 | 3242 | ignore_rest_of_line (); |
7bfd842d | 3243 | free (name); |
252b5132 RH |
3244 | return; |
3245 | } | |
3246 | ||
3247 | input_line_pointer++; | |
be95a9c1 | 3248 | assign_symbol (name, equiv); |
31d20a21 | 3249 | demand_empty_rest_of_line (); |
7bfd842d | 3250 | free (name); |
041ff4dd | 3251 | } |
252b5132 | 3252 | |
041ff4dd | 3253 | void |
39e6acbd | 3254 | s_space (int mult) |
252b5132 RH |
3255 | { |
3256 | expressionS exp; | |
3257 | expressionS val; | |
3258 | char *p = 0; | |
3259 | char *stop = NULL; | |
fb25138b | 3260 | char stopc = 0; |
252b5132 RH |
3261 | int bytes; |
3262 | ||
3263 | #ifdef md_flush_pending_output | |
3264 | md_flush_pending_output (); | |
3265 | #endif | |
3266 | ||
e74e2b4c JB |
3267 | switch (mult) |
3268 | { | |
3269 | case 'x': | |
3270 | #ifdef X_PRECISION | |
3271 | # ifndef P_PRECISION | |
3272 | # define P_PRECISION X_PRECISION | |
3273 | # define P_PRECISION_PAD X_PRECISION_PAD | |
3274 | # endif | |
3275 | mult = (X_PRECISION + X_PRECISION_PAD) * sizeof (LITTLENUM_TYPE); | |
3276 | if (!mult) | |
3277 | #endif | |
3278 | mult = 12; | |
3279 | break; | |
3280 | ||
3281 | case 'p': | |
3282 | #ifdef P_PRECISION | |
3283 | mult = (P_PRECISION + P_PRECISION_PAD) * sizeof (LITTLENUM_TYPE); | |
3284 | if (!mult) | |
3285 | #endif | |
3286 | mult = 12; | |
3287 | break; | |
3288 | } | |
3289 | ||
cc3f603a JM |
3290 | #ifdef md_cons_align |
3291 | md_cons_align (1); | |
3292 | #endif | |
3293 | ||
252b5132 RH |
3294 | if (flag_mri) |
3295 | stop = mri_comment_field (&stopc); | |
3296 | ||
3297 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3298 | this is ds.b. */ | |
3299 | if (flag_m68k_mri && mult > 1) | |
3300 | { | |
3301 | if (now_seg == absolute_section) | |
3302 | { | |
3303 | abs_section_offset += abs_section_offset & 1; | |
3304 | if (line_label != NULL) | |
3305 | S_SET_VALUE (line_label, abs_section_offset); | |
3306 | } | |
3307 | else if (mri_common_symbol != NULL) | |
3308 | { | |
91d6fa6a | 3309 | valueT mri_val; |
252b5132 | 3310 | |
91d6fa6a NC |
3311 | mri_val = S_GET_VALUE (mri_common_symbol); |
3312 | if ((mri_val & 1) != 0) | |
252b5132 | 3313 | { |
91d6fa6a | 3314 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3315 | if (line_label != NULL) |
3316 | { | |
2b47531b ILT |
3317 | expressionS *symexp; |
3318 | ||
3319 | symexp = symbol_get_value_expression (line_label); | |
3320 | know (symexp->X_op == O_symbol); | |
3321 | know (symexp->X_add_symbol == mri_common_symbol); | |
3322 | symexp->X_add_number += 1; | |
252b5132 RH |
3323 | } |
3324 | } | |
3325 | } | |
3326 | else | |
3327 | { | |
3328 | do_align (1, (char *) NULL, 0, 0); | |
3329 | if (line_label != NULL) | |
3330 | { | |
2b47531b | 3331 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3332 | S_SET_VALUE (line_label, frag_now_fix ()); |
3333 | } | |
3334 | } | |
3335 | } | |
3336 | ||
3337 | bytes = mult; | |
3338 | ||
3339 | expression (&exp); | |
3340 | ||
3341 | SKIP_WHITESPACE (); | |
3342 | if (*input_line_pointer == ',') | |
3343 | { | |
3344 | ++input_line_pointer; | |
3345 | expression (&val); | |
3346 | } | |
3347 | else | |
3348 | { | |
3349 | val.X_op = O_constant; | |
3350 | val.X_add_number = 0; | |
3351 | } | |
3352 | ||
ec9ab52c JB |
3353 | if ((val.X_op != O_constant |
3354 | || val.X_add_number < - 0x80 | |
3355 | || val.X_add_number > 0xff | |
3356 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3357 | && (now_seg != absolute_section && !in_bss ())) | |
252b5132 | 3358 | { |
9497f5ac | 3359 | resolve_expression (&exp); |
252b5132 | 3360 | if (exp.X_op != O_constant) |
0e389e77 | 3361 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3362 | else |
3363 | { | |
3364 | offsetT i; | |
3365 | ||
005304aa NC |
3366 | /* PR 20901: Check for excessive values. |
3367 | FIXME: 1<<10 is an arbitrary limit. Maybe use maxpagesize instead ? */ | |
3368 | if (exp.X_add_number < 0 || exp.X_add_number > (1 << 10)) | |
5eecd862 | 3369 | as_bad (_("size value for space directive too large: %lx"), |
005304aa NC |
3370 | (long) exp.X_add_number); |
3371 | else | |
3372 | { | |
3373 | if (mult == 0) | |
3374 | mult = 1; | |
3375 | bytes = mult * exp.X_add_number; | |
3376 | ||
3377 | for (i = 0; i < exp.X_add_number; i++) | |
3378 | emit_expr (&val, mult); | |
3379 | } | |
252b5132 RH |
3380 | } |
3381 | } | |
3382 | else | |
3383 | { | |
9497f5ac NC |
3384 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3385 | resolve_expression (&exp); | |
3386 | ||
252b5132 RH |
3387 | if (exp.X_op == O_constant) |
3388 | { | |
d80081ef AM |
3389 | addressT repeat = exp.X_add_number; |
3390 | addressT total; | |
252b5132 | 3391 | |
d80081ef AM |
3392 | bytes = 0; |
3393 | if ((offsetT) repeat < 0) | |
3394 | { | |
3395 | as_warn (_(".space repeat count is negative, ignored")); | |
3396 | goto getout; | |
3397 | } | |
3398 | if (repeat == 0) | |
252b5132 | 3399 | { |
2d150871 RO |
3400 | if (!flag_mri) |
3401 | as_warn (_(".space repeat count is zero, ignored")); | |
252b5132 RH |
3402 | goto getout; |
3403 | } | |
d80081ef AM |
3404 | if ((unsigned int) mult <= 1) |
3405 | total = repeat; | |
3406 | else if (gas_mul_overflow (repeat, mult, &total) | |
3407 | || (offsetT) total < 0) | |
3408 | { | |
3409 | as_warn (_(".space repeat count overflow, ignored")); | |
3410 | goto getout; | |
3411 | } | |
3412 | bytes = total; | |
252b5132 RH |
3413 | |
3414 | /* If we are in the absolute section, just bump the offset. */ | |
3415 | if (now_seg == absolute_section) | |
3416 | { | |
ec9ab52c JB |
3417 | if (val.X_op != O_constant || val.X_add_number != 0) |
3418 | as_warn (_("ignoring fill value in absolute section")); | |
d80081ef | 3419 | abs_section_offset += total; |
252b5132 RH |
3420 | goto getout; |
3421 | } | |
3422 | ||
3423 | /* If we are secretly in an MRI common section, then | |
3424 | creating space just increases the size of the common | |
3425 | symbol. */ | |
3426 | if (mri_common_symbol != NULL) | |
3427 | { | |
3428 | S_SET_VALUE (mri_common_symbol, | |
d80081ef | 3429 | S_GET_VALUE (mri_common_symbol) + total); |
252b5132 RH |
3430 | goto getout; |
3431 | } | |
3432 | ||
3433 | if (!need_pass_2) | |
3434 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
d80081ef | 3435 | (offsetT) total, (char *) 0); |
252b5132 RH |
3436 | } |
3437 | else | |
3438 | { | |
3439 | if (now_seg == absolute_section) | |
3440 | { | |
3441 | as_bad (_("space allocation too complex in absolute section")); | |
3442 | subseg_set (text_section, 0); | |
3443 | } | |
f0e652b4 | 3444 | |
252b5132 RH |
3445 | if (mri_common_symbol != NULL) |
3446 | { | |
3447 | as_bad (_("space allocation too complex in common section")); | |
3448 | mri_common_symbol = NULL; | |
3449 | } | |
f0e652b4 | 3450 | |
252b5132 RH |
3451 | if (!need_pass_2) |
3452 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3453 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3454 | } | |
3455 | ||
ec9ab52c JB |
3456 | if ((val.X_op != O_constant || val.X_add_number != 0) && in_bss ()) |
3457 | as_warn (_("ignoring fill value in section `%s'"), | |
3458 | segment_name (now_seg)); | |
3459 | else if (p) | |
252b5132 RH |
3460 | *p = val.X_add_number; |
3461 | } | |
3462 | ||
3463 | getout: | |
3464 | ||
3465 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3466 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3467 | or dcb.b. */ | |
3468 | if (flag_mri && (bytes & 1) != 0) | |
3469 | mri_pending_align = 1; | |
3470 | ||
3471 | demand_empty_rest_of_line (); | |
3472 | ||
3473 | if (flag_mri) | |
3474 | mri_comment_end (stop, stopc); | |
3475 | } | |
3476 | ||
b1766e7c NC |
3477 | void |
3478 | s_nop (int ignore ATTRIBUTE_UNUSED) | |
3479 | { | |
058430b4 AM |
3480 | expressionS exp; |
3481 | fragS *start; | |
3482 | addressT start_off; | |
3483 | offsetT frag_off; | |
3484 | ||
b1766e7c NC |
3485 | #ifdef md_flush_pending_output |
3486 | md_flush_pending_output (); | |
3487 | #endif | |
3488 | ||
b1766e7c | 3489 | SKIP_WHITESPACE (); |
058430b4 | 3490 | expression (&exp); |
b1766e7c NC |
3491 | demand_empty_rest_of_line (); |
3492 | ||
058430b4 AM |
3493 | start = frag_now; |
3494 | start_off = frag_now_fix (); | |
3495 | do | |
3496 | { | |
b1766e7c | 3497 | #ifdef md_emit_single_noop |
058430b4 | 3498 | md_emit_single_noop; |
b1766e7c | 3499 | #else |
058430b4 | 3500 | char *nop; |
b1766e7c NC |
3501 | |
3502 | #ifndef md_single_noop_insn | |
3503 | #define md_single_noop_insn "nop" | |
3504 | #endif | |
058430b4 AM |
3505 | /* md_assemble might modify its argument, so |
3506 | we must pass it a string that is writable. */ | |
3507 | if (asprintf (&nop, "%s", md_single_noop_insn) < 0) | |
3508 | as_fatal ("%s", xstrerror (errno)); | |
b1766e7c | 3509 | |
058430b4 AM |
3510 | /* Some targets assume that they can update input_line_pointer |
3511 | inside md_assemble, and, worse, that they can leave it | |
3512 | assigned to the string pointer that was provided as an | |
3513 | argument. So preserve ilp here. */ | |
3514 | char *saved_ilp = input_line_pointer; | |
3515 | md_assemble (nop); | |
3516 | input_line_pointer = saved_ilp; | |
3517 | free (nop); | |
3518 | #endif | |
3519 | #ifdef md_flush_pending_output | |
3520 | md_flush_pending_output (); | |
b1766e7c | 3521 | #endif |
058430b4 AM |
3522 | } while (exp.X_op == O_constant |
3523 | && exp.X_add_number > 0 | |
3524 | && frag_offset_ignore_align_p (start, frag_now, &frag_off) | |
3525 | && frag_off + frag_now_fix () < start_off + exp.X_add_number); | |
b1766e7c NC |
3526 | } |
3527 | ||
62a02d25 | 3528 | void |
8f065d3b | 3529 | s_nops (int ignore ATTRIBUTE_UNUSED) |
62a02d25 L |
3530 | { |
3531 | expressionS exp; | |
3532 | expressionS val; | |
3533 | ||
3534 | #ifdef md_flush_pending_output | |
3535 | md_flush_pending_output (); | |
3536 | #endif | |
3537 | ||
b1766e7c | 3538 | SKIP_WHITESPACE (); |
62a02d25 | 3539 | expression (&exp); |
b1766e7c NC |
3540 | /* Note - this expression is tested for an absolute value in |
3541 | write.c:relax_segment(). */ | |
62a02d25 | 3542 | |
b1766e7c | 3543 | SKIP_WHITESPACE (); |
62a02d25 L |
3544 | if (*input_line_pointer == ',') |
3545 | { | |
3546 | ++input_line_pointer; | |
3547 | expression (&val); | |
3548 | } | |
3549 | else | |
3550 | { | |
3551 | val.X_op = O_constant; | |
3552 | val.X_add_number = 0; | |
3553 | } | |
3554 | ||
b1766e7c | 3555 | if (val.X_op != O_constant) |
62a02d25 | 3556 | { |
b1766e7c NC |
3557 | as_bad (_("unsupported variable nop control in .nops directive")); |
3558 | val.X_op = O_constant; | |
3559 | val.X_add_number = 0; | |
3560 | } | |
3561 | else if (val.X_add_number < 0) | |
3562 | { | |
3563 | as_warn (_("negative nop control byte, ignored")); | |
3564 | val.X_add_number = 0; | |
62a02d25 | 3565 | } |
62a02d25 L |
3566 | |
3567 | demand_empty_rest_of_line (); | |
b1766e7c NC |
3568 | |
3569 | if (need_pass_2) | |
3570 | /* Ignore this directive if we are going to perform a second pass. */ | |
3571 | return; | |
3572 | ||
3573 | /* Store the no-op instruction control byte in the first byte of frag. */ | |
3574 | char *p; | |
3575 | symbolS *sym = make_expr_symbol (&exp); | |
3576 | p = frag_var (rs_space_nop, 1, 1, (relax_substateT) 0, | |
3577 | sym, (offsetT) 0, (char *) 0); | |
3578 | *p = val.X_add_number; | |
62a02d25 L |
3579 | } |
3580 | ||
bcd17d4f JB |
3581 | /* Obtain the size of a floating point number, given a type. */ |
3582 | ||
3583 | static int | |
3584 | float_length (int float_type, int *pad_p) | |
3585 | { | |
3586 | int length, pad = 0; | |
3587 | ||
3588 | switch (float_type) | |
3589 | { | |
3590 | case 'b': | |
3591 | case 'B': | |
3592 | case 'h': | |
3593 | case 'H': | |
3594 | length = 2; | |
3595 | break; | |
3596 | ||
3597 | case 'f': | |
3598 | case 'F': | |
3599 | case 's': | |
3600 | case 'S': | |
3601 | length = 4; | |
3602 | break; | |
3603 | ||
3604 | case 'd': | |
3605 | case 'D': | |
3606 | case 'r': | |
3607 | case 'R': | |
3608 | length = 8; | |
3609 | break; | |
3610 | ||
3611 | case 'x': | |
3612 | case 'X': | |
3613 | #ifdef X_PRECISION | |
3614 | length = X_PRECISION * sizeof (LITTLENUM_TYPE); | |
3615 | pad = X_PRECISION_PAD * sizeof (LITTLENUM_TYPE); | |
3616 | if (!length) | |
3617 | #endif | |
3618 | length = 12; | |
3619 | break; | |
3620 | ||
3621 | case 'p': | |
3622 | case 'P': | |
3623 | #ifdef P_PRECISION | |
3624 | length = P_PRECISION * sizeof (LITTLENUM_TYPE); | |
3625 | pad = P_PRECISION_PAD * sizeof (LITTLENUM_TYPE); | |
3626 | if (!length) | |
3627 | #endif | |
3628 | length = 12; | |
3629 | break; | |
3630 | ||
3631 | default: | |
3632 | as_bad (_("unknown floating type '%c'"), float_type); | |
3633 | length = -1; | |
3634 | break; | |
3635 | } | |
3636 | ||
3637 | if (pad_p) | |
3638 | *pad_p = pad; | |
3639 | ||
3640 | return length; | |
3641 | } | |
3642 | ||
bb32eac5 JB |
3643 | static int |
3644 | parse_one_float (int float_type, char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]) | |
3645 | { | |
3646 | int length; | |
3647 | ||
3648 | SKIP_WHITESPACE (); | |
3649 | ||
3650 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3651 | letter is legal. Someone may invent a "z" format and this routine | |
3652 | has no use for such information. Lusers beware: you get | |
3653 | diagnostics if your input is ill-conditioned. */ | |
3654 | if (input_line_pointer[0] == '0' | |
3655 | && ISALPHA (input_line_pointer[1])) | |
3656 | input_line_pointer += 2; | |
3657 | ||
3658 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3659 | with the exact digits specified. */ | |
3660 | if (input_line_pointer[0] == ':') | |
3661 | { | |
3662 | ++input_line_pointer; | |
3663 | length = hex_float (float_type, temp); | |
3664 | if (length < 0) | |
3665 | { | |
3666 | ignore_rest_of_line (); | |
3667 | return length; | |
3668 | } | |
3669 | } | |
3670 | else | |
3671 | { | |
3672 | const char *err; | |
3673 | ||
3674 | err = md_atof (float_type, temp, &length); | |
3675 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3676 | know (err != NULL || length > 0); | |
3677 | if (err) | |
3678 | { | |
3679 | as_bad (_("bad floating literal: %s"), err); | |
3680 | ignore_rest_of_line (); | |
3681 | return -1; | |
3682 | } | |
3683 | } | |
3684 | ||
3685 | return length; | |
3686 | } | |
3687 | ||
252b5132 RH |
3688 | /* This is like s_space, but the value is a floating point number with |
3689 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3690 | friends. */ | |
3691 | ||
3692 | void | |
39e6acbd | 3693 | s_float_space (int float_type) |
252b5132 RH |
3694 | { |
3695 | offsetT count; | |
3696 | int flen; | |
3697 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3698 | char *stop = NULL; | |
fb25138b | 3699 | char stopc = 0; |
252b5132 | 3700 | |
cc3f603a JM |
3701 | #ifdef md_cons_align |
3702 | md_cons_align (1); | |
3703 | #endif | |
3704 | ||
252b5132 RH |
3705 | if (flag_mri) |
3706 | stop = mri_comment_field (&stopc); | |
3707 | ||
3708 | count = get_absolute_expression (); | |
3709 | ||
3710 | SKIP_WHITESPACE (); | |
3711 | if (*input_line_pointer != ',') | |
3712 | { | |
bcd17d4f JB |
3713 | int pad; |
3714 | ||
3715 | flen = float_length (float_type, &pad); | |
3716 | if (flen >= 0) | |
3717 | memset (temp, 0, flen += pad); | |
252b5132 | 3718 | } |
bcd17d4f JB |
3719 | else |
3720 | { | |
3721 | ++input_line_pointer; | |
252b5132 | 3722 | |
bcd17d4f JB |
3723 | flen = parse_one_float (float_type, temp); |
3724 | } | |
252b5132 | 3725 | |
bb32eac5 | 3726 | if (flen < 0) |
252b5132 | 3727 | { |
bb32eac5 JB |
3728 | if (flag_mri) |
3729 | mri_comment_end (stop, stopc); | |
3730 | return; | |
252b5132 RH |
3731 | } |
3732 | ||
3733 | while (--count >= 0) | |
3734 | { | |
3735 | char *p; | |
3736 | ||
3737 | p = frag_more (flen); | |
3738 | memcpy (p, temp, (unsigned int) flen); | |
3739 | } | |
3740 | ||
3741 | demand_empty_rest_of_line (); | |
3742 | ||
3743 | if (flag_mri) | |
3744 | mri_comment_end (stop, stopc); | |
3745 | } | |
3746 | ||
3747 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3748 | ||
3749 | void | |
39e6acbd | 3750 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3751 | { |
3752 | char *stop = NULL; | |
fb25138b | 3753 | char stopc = 0; |
252b5132 RH |
3754 | |
3755 | if (flag_mri) | |
3756 | stop = mri_comment_field (&stopc); | |
3757 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3758 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3759 | /* The ELF backend needs to know that we are changing sections, so | |
3760 | that .previous works correctly. */ | |
f43abd2b | 3761 | if (IS_ELF) |
a2902af6 TS |
3762 | obj_elf_section_change_hook (); |
3763 | #endif | |
252b5132 RH |
3764 | subseg_set (absolute_section, 0); |
3765 | demand_empty_rest_of_line (); | |
3766 | if (flag_mri) | |
3767 | mri_comment_end (stop, stopc); | |
3768 | } | |
3769 | ||
3770 | void | |
39e6acbd | 3771 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3772 | { |
3d540e93 | 3773 | int temp; |
252b5132 RH |
3774 | |
3775 | temp = get_absolute_expression (); | |
3776 | subseg_set (text_section, (subsegT) temp); | |
3777 | demand_empty_rest_of_line (); | |
041ff4dd | 3778 | } |
06e77878 AO |
3779 | |
3780 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3781 | referenced directly, will cause y to become a weak symbol. */ | |
3782 | void | |
3783 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3784 | { | |
3785 | char *name; | |
06e77878 AO |
3786 | symbolS *symbolP; |
3787 | symbolS *symbolP2; | |
3788 | expressionS exp; | |
3789 | ||
7bfd842d NC |
3790 | if ((name = read_symbol_name ()) == NULL) |
3791 | return; | |
06e77878 AO |
3792 | |
3793 | symbolP = symbol_find_or_make (name); | |
3794 | ||
b54788f8 AO |
3795 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3796 | { | |
89cdfe57 | 3797 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3798 | { |
3799 | as_bad (_("symbol `%s' is already defined"), name); | |
7bfd842d | 3800 | goto err_out; |
92757bc9 | 3801 | } |
89cdfe57 | 3802 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3803 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3804 | } |
3805 | ||
06e77878 AO |
3806 | SKIP_WHITESPACE (); |
3807 | ||
3808 | if (*input_line_pointer != ',') | |
3809 | { | |
06e77878 | 3810 | as_bad (_("expected comma after \"%s\""), name); |
7bfd842d | 3811 | goto err_out; |
06e77878 AO |
3812 | } |
3813 | ||
3814 | input_line_pointer++; | |
3815 | ||
3816 | SKIP_WHITESPACE (); | |
7bfd842d | 3817 | free (name); |
06e77878 | 3818 | |
7bfd842d NC |
3819 | if ((name = read_symbol_name ()) == NULL) |
3820 | return; | |
06e77878 AO |
3821 | |
3822 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3823 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3824 | { | |
3825 | symbolP2 = symbol_find_or_make (name); | |
3826 | S_SET_WEAKREFD (symbolP2); | |
3827 | } | |
3828 | else | |
3829 | { | |
3830 | symbolS *symp = symbolP2; | |
3831 | ||
3832 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3833 | { | |
3834 | expressionS *expP = symbol_get_value_expression (symp); | |
3835 | ||
9c2799c2 | 3836 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3837 | && expP->X_add_number == 0); |
3838 | symp = expP->X_add_symbol; | |
3839 | } | |
3840 | if (symp == symbolP) | |
3841 | { | |
3842 | char *loop; | |
3843 | ||
3844 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3845 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3846 | |
3847 | symp = symbolP2; | |
3848 | while (symp != symbolP) | |
3849 | { | |
3850 | char *old_loop = loop; | |
7bfd842d | 3851 | |
06e77878 | 3852 | symp = symbol_get_value_expression (symp)->X_add_symbol; |
1bf57e9f AM |
3853 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3854 | (const char *) NULL); | |
06e77878 AO |
3855 | free (old_loop); |
3856 | } | |
3857 | ||
3858 | as_bad (_("%s: would close weakref loop: %s"), | |
3859 | S_GET_NAME (symbolP), loop); | |
3860 | ||
3861 | free (loop); | |
7bfd842d | 3862 | free (name); |
06e77878 AO |
3863 | ignore_rest_of_line (); |
3864 | return; | |
3865 | } | |
3866 | ||
3867 | /* Short-circuiting instead of just checking here might speed | |
3868 | things up a tiny little bit, but loop error messages would | |
3869 | miss intermediate links. */ | |
3870 | /* symbolP2 = symp; */ | |
3871 | } | |
3872 | ||
06e77878 AO |
3873 | memset (&exp, 0, sizeof (exp)); |
3874 | exp.X_op = O_symbol; | |
3875 | exp.X_add_symbol = symbolP2; | |
3876 | ||
3877 | S_SET_SEGMENT (symbolP, undefined_section); | |
3878 | symbol_set_value_expression (symbolP, &exp); | |
3879 | symbol_set_frag (symbolP, &zero_address_frag); | |
3880 | S_SET_WEAKREFR (symbolP); | |
3881 | ||
3882 | demand_empty_rest_of_line (); | |
7bfd842d NC |
3883 | free (name); |
3884 | return; | |
3885 | ||
3886 | err_out: | |
3887 | ignore_rest_of_line (); | |
3888 | free (name); | |
3889 | return; | |
06e77878 | 3890 | } |
252b5132 | 3891 | \f |
c95b35a9 NS |
3892 | |
3893 | /* Verify that we are at the end of a line. If not, issue an error and | |
bdcd4568 AM |
3894 | skip to EOL. This function may leave input_line_pointer one past |
3895 | buffer_limit, so should not be called from places that may | |
3896 | dereference input_line_pointer unconditionally. Note that when the | |
3897 | gas parser is switched to handling a string (where buffer_limit | |
3898 | should be the size of the string excluding the NUL terminator) this | |
3899 | will be one past the NUL; is_end_of_line(0) returns true. */ | |
c95b35a9 | 3900 | |
041ff4dd | 3901 | void |
39e6acbd | 3902 | demand_empty_rest_of_line (void) |
252b5132 RH |
3903 | { |
3904 | SKIP_WHITESPACE (); | |
bdcd4568 AM |
3905 | if (input_line_pointer > buffer_limit) |
3906 | return; | |
252b5132 | 3907 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
041ff4dd | 3908 | input_line_pointer++; |
252b5132 | 3909 | else |
252b5132 | 3910 | { |
3882b010 | 3911 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3912 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3913 | *input_line_pointer); |
252b5132 | 3914 | else |
c95b35a9 | 3915 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3916 | *input_line_pointer); |
c95b35a9 | 3917 | ignore_rest_of_line (); |
252b5132 | 3918 | } |
c95b35a9 | 3919 | /* Return pointing just after end-of-line. */ |
c95b35a9 NS |
3920 | } |
3921 | ||
3922 | /* Silently advance to the end of line. Use this after already having | |
bdcd4568 AM |
3923 | issued an error about something bad. Like demand_empty_rest_of_line, |
3924 | this function may leave input_line_pointer one after buffer_limit; | |
3925 | Don't call it from within expression parsing code in an attempt to | |
3926 | silence further errors. */ | |
c95b35a9 NS |
3927 | |
3928 | void | |
3929 | ignore_rest_of_line (void) | |
3930 | { | |
bdcd4568 | 3931 | while (input_line_pointer <= buffer_limit) |
0d1064fa AM |
3932 | if (is_end_of_line[(unsigned char) *input_line_pointer++]) |
3933 | break; | |
041ff4dd | 3934 | /* Return pointing just after end-of-line. */ |
252b5132 RH |
3935 | } |
3936 | ||
be95a9c1 AM |
3937 | /* Sets frag for given symbol to zero_address_frag, except when the |
3938 | symbol frag is already set to a dummy listing frag. */ | |
3939 | ||
3940 | static void | |
3941 | set_zero_frag (symbolS *symbolP) | |
3942 | { | |
3943 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3944 | symbol_set_frag (symbolP, &zero_address_frag); | |
3945 | } | |
3946 | ||
041ff4dd | 3947 | /* In: Pointer to a symbol. |
d6415f6c | 3948 | Input_line_pointer->expression. |
f0e652b4 | 3949 | |
041ff4dd | 3950 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3951 | Tried to set symbol to value of expression. |
3952 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3953 | |
252b5132 | 3954 | void |
39e6acbd | 3955 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3956 | { |
3957 | expressionS exp; | |
be95a9c1 | 3958 | segT seg; |
252b5132 | 3959 | |
041ff4dd | 3960 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3961 | |
9497f5ac NC |
3962 | if (!S_IS_FORWARD_REF (symbolP)) |
3963 | (void) expression (&exp); | |
3964 | else | |
3965 | (void) deferred_expression (&exp); | |
252b5132 RH |
3966 | |
3967 | if (exp.X_op == O_illegal) | |
0e389e77 | 3968 | as_bad (_("illegal expression")); |
252b5132 | 3969 | else if (exp.X_op == O_absent) |
0e389e77 | 3970 | as_bad (_("missing expression")); |
252b5132 RH |
3971 | else if (exp.X_op == O_big) |
3972 | { | |
3973 | if (exp.X_add_number > 0) | |
0e389e77 | 3974 | as_bad (_("bignum invalid")); |
252b5132 | 3975 | else |
0e389e77 | 3976 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3977 | } |
3978 | else if (exp.X_op == O_subtract | |
9497f5ac | 3979 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3980 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3981 | && (symbol_get_frag (exp.X_add_symbol) |
3982 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3983 | { |
3984 | exp.X_op = O_constant; | |
3985 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3986 | - S_GET_VALUE (exp.X_op_symbol)); | |
3987 | } | |
3988 | ||
be95a9c1 AM |
3989 | if (symbol_section_p (symbolP)) |
3990 | { | |
3991 | as_bad ("attempt to set value of section symbol"); | |
3992 | return; | |
3993 | } | |
be95a9c1 | 3994 | |
252b5132 RH |
3995 | switch (exp.X_op) |
3996 | { | |
3997 | case O_illegal: | |
3998 | case O_absent: | |
3999 | case O_big: | |
4000 | exp.X_add_number = 0; | |
4001 | /* Fall through. */ | |
4002 | case O_constant: | |
4003 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 4004 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 4005 | set_zero_frag (symbolP); |
252b5132 RH |
4006 | break; |
4007 | ||
4008 | case O_register: | |
97c4f2d9 | 4009 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
4010 | if (S_IS_EXTERNAL (symbolP)) |
4011 | { | |
4012 | as_bad ("can't equate global symbol `%s' with register name", | |
4013 | S_GET_NAME (symbolP)); | |
4014 | return; | |
4015 | } | |
97c4f2d9 | 4016 | #endif |
d50c498a JB |
4017 | /* Make sure symbol_equated_p() recognizes the symbol as an equate. */ |
4018 | exp.X_add_symbol = make_expr_symbol (&exp); | |
4019 | exp.X_add_number = 0; | |
4020 | exp.X_op = O_symbol; | |
00b37cc4 | 4021 | symbol_set_value_expression (symbolP, &exp); |
252b5132 | 4022 | S_SET_SEGMENT (symbolP, reg_section); |
be95a9c1 | 4023 | set_zero_frag (symbolP); |
252b5132 RH |
4024 | break; |
4025 | ||
4026 | case O_symbol: | |
be95a9c1 AM |
4027 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
4028 | /* For x=undef+const, create an expression symbol. | |
4029 | For x=x+const, just update x except when x is an undefined symbol | |
4030 | For x=defined+const, evaluate x. */ | |
4031 | if (symbolP == exp.X_add_symbol | |
4032 | && (seg != undefined_section | |
4033 | || !symbol_constant_p (symbolP))) | |
4034 | { | |
4035 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
4036 | break; | |
4037 | } | |
9497f5ac | 4038 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
4039 | { |
4040 | symbolS *s = exp.X_add_symbol; | |
4041 | ||
60938e80 | 4042 | if (S_IS_COMMON (s)) |
76db0a2e | 4043 | as_bad (_("`%s' can't be equated to common symbol `%s'"), |
60938e80 L |
4044 | S_GET_NAME (symbolP), S_GET_NAME (s)); |
4045 | ||
be95a9c1 AM |
4046 | S_SET_SEGMENT (symbolP, seg); |
4047 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 4048 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 4049 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 4050 | break; |
252b5132 | 4051 | } |
66bd02d3 AM |
4052 | S_SET_SEGMENT (symbolP, undefined_section); |
4053 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 4054 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
4055 | set_zero_frag (symbolP); |
4056 | break; | |
252b5132 RH |
4057 | |
4058 | default: | |
aba4aa7d AM |
4059 | /* The value is some complex expression. */ |
4060 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 4061 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 4062 | set_zero_frag (symbolP); |
252b5132 RH |
4063 | break; |
4064 | } | |
4065 | } | |
4066 | \f | |
d6415f6c | 4067 | /* cons() |
f0e652b4 | 4068 | |
041ff4dd NC |
4069 | CONStruct more frag of .bytes, or .words etc. |
4070 | Should need_pass_2 be 1 then emit no frag(s). | |
4071 | This understands EXPRESSIONS. | |
f0e652b4 | 4072 | |
041ff4dd | 4073 | Bug (?) |
f0e652b4 | 4074 | |
041ff4dd NC |
4075 | This has a split personality. We use expression() to read the |
4076 | value. We can detect if the value won't fit in a byte or word. | |
4077 | But we can't detect if expression() discarded significant digits | |
4078 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
4079 | |
4080 | /* Select a parser for cons expressions. */ | |
4081 | ||
4082 | /* Some targets need to parse the expression in various fancy ways. | |
4083 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
4084 | (for example, the HPPA does this). Otherwise, you can define | |
252b5132 RH |
4085 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these |
4086 | are defined, which is the normal case, then only simple expressions | |
4087 | are permitted. */ | |
4088 | ||
abd63a32 | 4089 | #ifdef TC_M68K |
252b5132 | 4090 | static void |
39e6acbd | 4091 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 4092 | #endif |
252b5132 RH |
4093 | |
4094 | #ifndef TC_PARSE_CONS_EXPRESSION | |
252b5132 | 4095 | #ifdef REPEAT_CONS_EXPRESSIONS |
62ebcb5c AM |
4096 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
4097 | (parse_repeat_cons (EXP, NBYTES), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 | 4098 | static void |
39e6acbd | 4099 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
4100 | #endif |
4101 | ||
4102 | /* If we haven't gotten one yet, just call expression. */ | |
4103 | #ifndef TC_PARSE_CONS_EXPRESSION | |
62ebcb5c AM |
4104 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \ |
4105 | (expression (EXP), TC_PARSE_CONS_RETURN_NONE) | |
252b5132 RH |
4106 | #endif |
4107 | #endif | |
4108 | ||
cdfbf930 | 4109 | void |
b41b1f95 L |
4110 | do_parse_cons_expression (expressionS *exp, |
4111 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 | 4112 | { |
62ebcb5c | 4113 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
cdfbf930 RH |
4114 | } |
4115 | ||
4116 | ||
041ff4dd NC |
4117 | /* Worker to do .byte etc statements. |
4118 | Clobbers input_line_pointer and checks end-of-line. */ | |
4119 | ||
4120 | static void | |
3d540e93 | 4121 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 4122 | int rva) |
252b5132 RH |
4123 | { |
4124 | int c; | |
4125 | expressionS exp; | |
4126 | char *stop = NULL; | |
fb25138b | 4127 | char stopc = 0; |
252b5132 RH |
4128 | |
4129 | #ifdef md_flush_pending_output | |
4130 | md_flush_pending_output (); | |
4131 | #endif | |
4132 | ||
4133 | if (flag_mri) | |
4134 | stop = mri_comment_field (&stopc); | |
4135 | ||
4136 | if (is_it_end_of_statement ()) | |
4137 | { | |
4138 | demand_empty_rest_of_line (); | |
4139 | if (flag_mri) | |
4140 | mri_comment_end (stop, stopc); | |
4141 | return; | |
4142 | } | |
4143 | ||
cc1bc22a AM |
4144 | if (nbytes == 0) |
4145 | nbytes = TC_ADDRESS_BYTES (); | |
cc1bc22a | 4146 | |
252b5132 RH |
4147 | #ifdef md_cons_align |
4148 | md_cons_align (nbytes); | |
4149 | #endif | |
4150 | ||
4151 | c = 0; | |
4152 | do | |
4153 | { | |
62ebcb5c | 4154 | TC_PARSE_CONS_RETURN_TYPE ret = TC_PARSE_CONS_RETURN_NONE; |
bf7279d5 AM |
4155 | #ifdef TC_CONS_FIX_CHECK |
4156 | fixS **cur_fix = &frchain_now->fix_tail; | |
4157 | ||
4158 | if (*cur_fix != NULL) | |
4159 | cur_fix = &(*cur_fix)->fx_next; | |
4160 | #endif | |
62ebcb5c | 4161 | |
abd63a32 | 4162 | #ifdef TC_M68K |
252b5132 RH |
4163 | if (flag_m68k_mri) |
4164 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
4165 | else | |
abd63a32 | 4166 | #endif |
fa94de6b | 4167 | { |
d02603dc | 4168 | #if 0 |
847d4311 NS |
4169 | if (*input_line_pointer == '"') |
4170 | { | |
4171 | as_bad (_("unexpected `\"' in expression")); | |
4172 | ignore_rest_of_line (); | |
4173 | return; | |
4174 | } | |
d02603dc | 4175 | #endif |
62ebcb5c | 4176 | ret = TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
847d4311 | 4177 | } |
252b5132 RH |
4178 | |
4179 | if (rva) | |
4180 | { | |
4181 | if (exp.X_op == O_symbol) | |
4182 | exp.X_op = O_symbol_rva; | |
4183 | else | |
4184 | as_fatal (_("rva without symbol")); | |
4185 | } | |
62ebcb5c | 4186 | emit_expr_with_reloc (&exp, (unsigned int) nbytes, ret); |
bf7279d5 AM |
4187 | #ifdef TC_CONS_FIX_CHECK |
4188 | TC_CONS_FIX_CHECK (&exp, nbytes, *cur_fix); | |
4189 | #endif | |
252b5132 RH |
4190 | ++c; |
4191 | } | |
4192 | while (*input_line_pointer++ == ','); | |
4193 | ||
4194 | /* In MRI mode, after an odd number of bytes, we must align to an | |
4195 | even word boundary, unless the next instruction is a dc.b, ds.b | |
4196 | or dcb.b. */ | |
4197 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
4198 | mri_pending_align = 1; | |
4199 | ||
041ff4dd | 4200 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
4201 | |
4202 | demand_empty_rest_of_line (); | |
4203 | ||
4204 | if (flag_mri) | |
4205 | mri_comment_end (stop, stopc); | |
c7defc53 IB |
4206 | |
4207 | /* Disallow hand-crafting instructions using .byte. FIXME - what about | |
4208 | .word, .long etc ? */ | |
4209 | if (flag_synth_cfi && frchain_now && frchain_now->frch_ginsn_data | |
4210 | && nbytes == 1) | |
4211 | as_bad (_("SCFI: hand-crafting instructions not supported")); | |
252b5132 RH |
4212 | } |
4213 | ||
252b5132 | 4214 | void |
39e6acbd | 4215 | cons (int size) |
252b5132 RH |
4216 | { |
4217 | cons_worker (size, 0); | |
4218 | } | |
4219 | ||
041ff4dd | 4220 | void |
39e6acbd | 4221 | s_rva (int size) |
252b5132 RH |
4222 | { |
4223 | cons_worker (size, 1); | |
4224 | } | |
4225 | ||
05e9452c AM |
4226 | /* .reloc offset, reloc_name, symbol+addend. */ |
4227 | ||
b38ead21 | 4228 | static void |
05e9452c AM |
4229 | s_reloc (int ignore ATTRIBUTE_UNUSED) |
4230 | { | |
4231 | char *stop = NULL; | |
4232 | char stopc = 0; | |
4233 | expressionS exp; | |
4234 | char *r_name; | |
4235 | int c; | |
4236 | struct reloc_list *reloc; | |
cd0bbe6e | 4237 | struct _bfd_rel { const char * name; bfd_reloc_code_real_type code; }; |
f049c189 | 4238 | static const struct _bfd_rel bfd_relocs[] = |
cd0bbe6e | 4239 | { |
740bdc67 | 4240 | { "NONE", BFD_RELOC_NONE }, |
cd0bbe6e | 4241 | { "8", BFD_RELOC_8 }, |
740bdc67 AM |
4242 | { "16", BFD_RELOC_16 }, |
4243 | { "32", BFD_RELOC_32 }, | |
4244 | { "64", BFD_RELOC_64 } | |
4245 | }; | |
05e9452c | 4246 | |
8860a416 | 4247 | reloc = XNEW (struct reloc_list); |
05e9452c AM |
4248 | |
4249 | if (flag_mri) | |
4250 | stop = mri_comment_field (&stopc); | |
4251 | ||
4252 | expression (&exp); | |
4253 | switch (exp.X_op) | |
4254 | { | |
4255 | case O_illegal: | |
4256 | case O_absent: | |
4257 | case O_big: | |
4258 | case O_register: | |
4259 | as_bad (_("missing or bad offset expression")); | |
4260 | goto err_out; | |
4261 | case O_constant: | |
4262 | exp.X_add_symbol = section_symbol (now_seg); | |
d1bcae83 L |
4263 | /* Mark the section symbol used in relocation so that it will be |
4264 | included in the symbol table. */ | |
4265 | symbol_mark_used_in_reloc (exp.X_add_symbol); | |
05e9452c | 4266 | exp.X_op = O_symbol; |
2b0f3761 | 4267 | /* Fallthru */ |
05e9452c AM |
4268 | case O_symbol: |
4269 | if (exp.X_add_number == 0) | |
4270 | { | |
4271 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
4272 | break; | |
4273 | } | |
2b0f3761 | 4274 | /* Fallthru */ |
05e9452c AM |
4275 | default: |
4276 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
4277 | break; | |
4278 | } | |
4279 | ||
4280 | SKIP_WHITESPACE (); | |
4281 | if (*input_line_pointer != ',') | |
4282 | { | |
4283 | as_bad (_("missing reloc type")); | |
4284 | goto err_out; | |
4285 | } | |
4286 | ||
4287 | ++input_line_pointer; | |
4288 | SKIP_WHITESPACE (); | |
d02603dc | 4289 | c = get_symbol_name (& r_name); |
740bdc67 AM |
4290 | if (strncasecmp (r_name, "BFD_RELOC_", 10) == 0) |
4291 | { | |
4292 | unsigned int i; | |
4293 | ||
4294 | for (reloc->u.a.howto = NULL, i = 0; i < ARRAY_SIZE (bfd_relocs); i++) | |
4295 | if (strcasecmp (r_name + 10, bfd_relocs[i].name) == 0) | |
4296 | { | |
4297 | reloc->u.a.howto = bfd_reloc_type_lookup (stdoutput, | |
4298 | bfd_relocs[i].code); | |
4299 | break; | |
4300 | } | |
4301 | } | |
4302 | else | |
4303 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
05e9452c AM |
4304 | *input_line_pointer = c; |
4305 | if (reloc->u.a.howto == NULL) | |
4306 | { | |
4307 | as_bad (_("unrecognized reloc type")); | |
4308 | goto err_out; | |
4309 | } | |
4310 | ||
4311 | exp.X_op = O_absent; | |
d02603dc | 4312 | SKIP_WHITESPACE_AFTER_NAME (); |
05e9452c AM |
4313 | if (*input_line_pointer == ',') |
4314 | { | |
4315 | ++input_line_pointer; | |
c188d0bb | 4316 | expression (&exp); |
05e9452c AM |
4317 | } |
4318 | switch (exp.X_op) | |
4319 | { | |
4320 | case O_illegal: | |
4321 | case O_big: | |
4322 | case O_register: | |
4323 | as_bad (_("bad reloc expression")); | |
4324 | err_out: | |
4325 | ignore_rest_of_line (); | |
4326 | free (reloc); | |
4327 | if (flag_mri) | |
4328 | mri_comment_end (stop, stopc); | |
4329 | return; | |
4330 | case O_absent: | |
4331 | reloc->u.a.sym = NULL; | |
4332 | reloc->u.a.addend = 0; | |
4333 | break; | |
4334 | case O_constant: | |
4335 | reloc->u.a.sym = NULL; | |
4336 | reloc->u.a.addend = exp.X_add_number; | |
4337 | break; | |
4338 | case O_symbol: | |
4339 | reloc->u.a.sym = exp.X_add_symbol; | |
4340 | reloc->u.a.addend = exp.X_add_number; | |
4341 | break; | |
4342 | default: | |
4343 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4344 | reloc->u.a.addend = 0; | |
4345 | break; | |
4346 | } | |
4347 | ||
3b4dbbbf | 4348 | reloc->file = as_where (&reloc->line); |
05e9452c AM |
4349 | reloc->next = reloc_list; |
4350 | reloc_list = reloc; | |
4351 | ||
4352 | demand_empty_rest_of_line (); | |
4353 | if (flag_mri) | |
4354 | mri_comment_end (stop, stopc); | |
4355 | } | |
4356 | ||
252b5132 RH |
4357 | /* Put the contents of expression EXP into the object file using |
4358 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4359 | ||
4360 | void | |
39e6acbd | 4361 | emit_expr (expressionS *exp, unsigned int nbytes) |
62ebcb5c AM |
4362 | { |
4363 | emit_expr_with_reloc (exp, nbytes, TC_PARSE_CONS_RETURN_NONE); | |
4364 | } | |
4365 | ||
4366 | void | |
4367 | emit_expr_with_reloc (expressionS *exp, | |
4368 | unsigned int nbytes, | |
4369 | TC_PARSE_CONS_RETURN_TYPE reloc) | |
252b5132 RH |
4370 | { |
4371 | operatorT op; | |
3d540e93 | 4372 | char *p; |
252b5132 RH |
4373 | valueT extra_digit = 0; |
4374 | ||
4375 | /* Don't do anything if we are going to make another pass. */ | |
4376 | if (need_pass_2) | |
4377 | return; | |
4378 | ||
4bc25101 | 4379 | frag_grow (nbytes); |
ed7d5d1a | 4380 | dot_value = frag_now_fix (); |
8e723a10 | 4381 | dot_frag = frag_now; |
ed7d5d1a | 4382 | |
252b5132 RH |
4383 | #ifndef NO_LISTING |
4384 | #ifdef OBJ_ELF | |
4385 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4386 | appear as a four byte positive constant in the .line section, | |
4387 | followed by a 2 byte 0xffff. Look for that case here. */ | |
f049c189 AM |
4388 | if (strcmp (segment_name (now_seg), ".line") != 0) |
4389 | dwarf_line = -1; | |
4390 | else if (dwarf_line >= 0 | |
4391 | && nbytes == 2 | |
4392 | && exp->X_op == O_constant | |
4393 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4394 | listing_source_line ((unsigned int) dwarf_line); | |
4395 | else if (nbytes == 4 | |
4396 | && exp->X_op == O_constant | |
4397 | && exp->X_add_number >= 0) | |
4398 | dwarf_line = exp->X_add_number; | |
4399 | else | |
4400 | dwarf_line = -1; | |
252b5132 RH |
4401 | |
4402 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4403 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4404 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4405 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4406 | file. We look for that case here. */ | |
f049c189 AM |
4407 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
4408 | dwarf_file = 0; | |
4409 | else if (dwarf_file == 0 | |
4410 | && nbytes == 2 | |
4411 | && exp->X_op == O_constant | |
4412 | && exp->X_add_number == 0x11) | |
4413 | dwarf_file = 1; | |
4414 | else if (dwarf_file == 1 | |
4415 | && nbytes == 2 | |
4416 | && exp->X_op == O_constant | |
4417 | && exp->X_add_number == 0x12) | |
4418 | dwarf_file = 2; | |
4419 | else if (dwarf_file == 2 | |
4420 | && nbytes == 4) | |
4421 | dwarf_file = 3; | |
4422 | else if (dwarf_file == 3 | |
4423 | && nbytes == 2 | |
4424 | && exp->X_op == O_constant | |
4425 | && exp->X_add_number == 0x38) | |
4426 | dwarf_file = 4; | |
4427 | else | |
4428 | dwarf_file = 0; | |
4429 | ||
4430 | /* The variable dwarf_file_string tells stringer that the string | |
4431 | may be the name of the source file. */ | |
4432 | if (dwarf_file == 4) | |
4433 | dwarf_file_string = 1; | |
4434 | else | |
4435 | dwarf_file_string = 0; | |
252b5132 RH |
4436 | #endif |
4437 | #endif | |
4438 | ||
4439 | if (check_eh_frame (exp, &nbytes)) | |
4440 | return; | |
4441 | ||
4442 | op = exp->X_op; | |
4443 | ||
252b5132 RH |
4444 | /* Handle a negative bignum. */ |
4445 | if (op == O_uminus | |
4446 | && exp->X_add_number == 0 | |
2b47531b ILT |
4447 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4448 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4449 | { |
4450 | int i; | |
4451 | unsigned long carry; | |
4452 | ||
2b47531b | 4453 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4454 | |
4455 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4456 | carry = 1; | |
4457 | for (i = 0; i < exp->X_add_number; i++) | |
4458 | { | |
4459 | unsigned long next; | |
4460 | ||
041ff4dd | 4461 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4462 | & LITTLENUM_MASK) |
4463 | + carry); | |
4464 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4465 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4466 | } | |
4467 | ||
4468 | /* We can ignore any carry out, because it will be handled by | |
4469 | extra_digit if it is needed. */ | |
4470 | ||
4471 | extra_digit = (valueT) -1; | |
4472 | op = O_big; | |
4473 | } | |
4474 | ||
4475 | if (op == O_absent || op == O_illegal) | |
4476 | { | |
4477 | as_warn (_("zero assumed for missing expression")); | |
4478 | exp->X_add_number = 0; | |
4479 | op = O_constant; | |
4480 | } | |
4481 | else if (op == O_big && exp->X_add_number <= 0) | |
4482 | { | |
0e389e77 | 4483 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4484 | exp->X_add_number = 0; |
4485 | op = O_constant; | |
4486 | } | |
4487 | else if (op == O_register) | |
4488 | { | |
4489 | as_warn (_("register value used as expression")); | |
4490 | op = O_constant; | |
4491 | } | |
4492 | ||
ec9ab52c JB |
4493 | /* Allow `.word 0' in the absolute section. */ |
4494 | if (now_seg == absolute_section) | |
4495 | { | |
4496 | if (op != O_constant || exp->X_add_number != 0) | |
4497 | as_bad (_("attempt to store value in absolute section")); | |
4498 | abs_section_offset += nbytes; | |
4499 | return; | |
4500 | } | |
4501 | ||
4502 | /* Allow `.word 0' in BSS style sections. */ | |
4503 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
4504 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
4505 | segment_name (now_seg)); | |
4506 | ||
252b5132 RH |
4507 | p = frag_more ((int) nbytes); |
4508 | ||
62ebcb5c AM |
4509 | if (reloc != TC_PARSE_CONS_RETURN_NONE) |
4510 | { | |
4511 | emit_expr_fix (exp, nbytes, frag_now, p, reloc); | |
4512 | return; | |
4513 | } | |
4514 | ||
252b5132 RH |
4515 | #ifndef WORKING_DOT_WORD |
4516 | /* If we have the difference of two symbols in a word, save it on | |
4517 | the broken_words list. See the code in write.c. */ | |
4518 | if (op == O_subtract && nbytes == 2) | |
4519 | { | |
4520 | struct broken_word *x; | |
4521 | ||
8860a416 | 4522 | x = XNEW (struct broken_word); |
252b5132 RH |
4523 | x->next_broken_word = broken_words; |
4524 | broken_words = x; | |
4525 | x->seg = now_seg; | |
4526 | x->subseg = now_subseg; | |
4527 | x->frag = frag_now; | |
4528 | x->word_goes_here = p; | |
4529 | x->dispfrag = 0; | |
4530 | x->add = exp->X_add_symbol; | |
4531 | x->sub = exp->X_op_symbol; | |
4532 | x->addnum = exp->X_add_number; | |
4533 | x->added = 0; | |
dc59a897 | 4534 | x->use_jump = 0; |
252b5132 RH |
4535 | new_broken_words++; |
4536 | return; | |
4537 | } | |
4538 | #endif | |
4539 | ||
4540 | /* If we have an integer, but the number of bytes is too large to | |
4541 | pass to md_number_to_chars, handle it as a bignum. */ | |
4542 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4543 | { | |
e5604d79 | 4544 | extra_digit = exp->X_unsigned ? 0 : -1; |
956a6ba3 | 4545 | convert_to_bignum (exp, !exp->X_unsigned); |
e5604d79 | 4546 | op = O_big; |
252b5132 RH |
4547 | } |
4548 | ||
4549 | if (op == O_constant) | |
4550 | { | |
3d540e93 NC |
4551 | valueT get; |
4552 | valueT use; | |
4553 | valueT mask; | |
3d540e93 | 4554 | valueT unmask; |
252b5132 RH |
4555 | |
4556 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4557 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4558 | if (nbytes >= sizeof (valueT)) |
4559 | { | |
4504a634 | 4560 | know (nbytes == sizeof (valueT)); |
252b5132 | 4561 | mask = 0; |
252b5132 RH |
4562 | } |
4563 | else | |
4564 | { | |
041ff4dd | 4565 | /* Don't store these bits. */ |
252b5132 | 4566 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
252b5132 RH |
4567 | } |
4568 | ||
041ff4dd | 4569 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4570 | |
4571 | #ifdef NEVER | |
4572 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4573 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4574 | #endif |
4575 | ||
4576 | get = exp->X_add_number; | |
4577 | use = get & unmask; | |
4504a634 | 4578 | if ((get & mask) != 0 && (-get & mask) != 0) |
5f2b6bc9 NC |
4579 | { |
4580 | /* Leading bits contain both 0s & 1s. */ | |
f493c217 AM |
4581 | as_warn (_("value 0x%" PRIx64 " truncated to 0x%" PRIx64), |
4582 | (uint64_t) get, (uint64_t) use); | |
252b5132 | 4583 | } |
041ff4dd | 4584 | /* Put bytes in right order. */ |
252b5132 RH |
4585 | md_number_to_chars (p, use, (int) nbytes); |
4586 | } | |
4587 | else if (op == O_big) | |
4588 | { | |
4589 | unsigned int size; | |
4590 | LITTLENUM_TYPE *nums; | |
4591 | ||
252b5132 RH |
4592 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4593 | if (nbytes < size) | |
4594 | { | |
93d90f46 | 4595 | int i = nbytes / CHARS_PER_LITTLENUM; |
5f2b6bc9 | 4596 | |
93d90f46 AM |
4597 | if (i != 0) |
4598 | { | |
4599 | LITTLENUM_TYPE sign = 0; | |
4600 | if ((generic_bignum[--i] | |
4601 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4602 | sign = ~(LITTLENUM_TYPE) 0; | |
5f2b6bc9 | 4603 | |
93d90f46 AM |
4604 | while (++i < exp->X_add_number) |
4605 | if (generic_bignum[i] != sign) | |
4606 | break; | |
4607 | } | |
5f2b6bc9 NC |
4608 | else if (nbytes == 1) |
4609 | { | |
4610 | /* We have nbytes == 1 and CHARS_PER_LITTLENUM == 2 (probably). | |
4611 | Check that bits 8.. of generic_bignum[0] match bit 7 | |
4612 | and that they match all of generic_bignum[1..exp->X_add_number]. */ | |
4613 | LITTLENUM_TYPE sign = (generic_bignum[0] & (1 << 7)) ? -1 : 0; | |
4614 | LITTLENUM_TYPE himask = LITTLENUM_MASK & ~ 0xFF; | |
4615 | ||
4616 | if ((generic_bignum[0] & himask) == (sign & himask)) | |
4617 | { | |
4618 | while (++i < exp->X_add_number) | |
4619 | if (generic_bignum[i] != sign) | |
4620 | break; | |
4621 | } | |
4622 | } | |
4623 | ||
93d90f46 | 4624 | if (i < exp->X_add_number) |
992a06ee AM |
4625 | as_warn (ngettext ("bignum truncated to %d byte", |
4626 | "bignum truncated to %d bytes", | |
4627 | nbytes), | |
4628 | nbytes); | |
252b5132 RH |
4629 | size = nbytes; |
4630 | } | |
4631 | ||
93d90f46 AM |
4632 | if (nbytes == 1) |
4633 | { | |
4634 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4635 | return; | |
4636 | } | |
4637 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4638 | ||
252b5132 RH |
4639 | if (target_big_endian) |
4640 | { | |
4641 | while (nbytes > size) | |
4642 | { | |
4643 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4644 | nbytes -= CHARS_PER_LITTLENUM; | |
4645 | p += CHARS_PER_LITTLENUM; | |
4646 | } | |
4647 | ||
4648 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4649 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4650 | { |
4651 | --nums; | |
4652 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4653 | size -= CHARS_PER_LITTLENUM; | |
4654 | p += CHARS_PER_LITTLENUM; | |
4655 | } | |
4656 | } | |
4657 | else | |
4658 | { | |
4659 | nums = generic_bignum; | |
ceac3f62 | 4660 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4661 | { |
4662 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4663 | ++nums; | |
4664 | size -= CHARS_PER_LITTLENUM; | |
4665 | p += CHARS_PER_LITTLENUM; | |
4666 | nbytes -= CHARS_PER_LITTLENUM; | |
4667 | } | |
4668 | ||
ceac3f62 | 4669 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4670 | { |
4671 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4672 | nbytes -= CHARS_PER_LITTLENUM; | |
4673 | p += CHARS_PER_LITTLENUM; | |
4674 | } | |
4675 | } | |
4676 | } | |
4677 | else | |
62ebcb5c | 4678 | emit_expr_fix (exp, nbytes, frag_now, p, TC_PARSE_CONS_RETURN_NONE); |
7ddd14de BW |
4679 | } |
4680 | ||
4681 | void | |
62ebcb5c | 4682 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p, |
00c06fdc | 4683 | TC_PARSE_CONS_RETURN_TYPE r ATTRIBUTE_UNUSED) |
7ddd14de | 4684 | { |
62ebcb5c AM |
4685 | int offset = 0; |
4686 | unsigned int size = nbytes; | |
4687 | ||
4688 | memset (p, 0, size); | |
252b5132 | 4689 | |
7ddd14de | 4690 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4691 | |
252b5132 | 4692 | #ifdef TC_CONS_FIX_NEW |
62ebcb5c | 4693 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal + offset, size, exp, r); |
252b5132 | 4694 | #else |
62ebcb5c AM |
4695 | if (r != TC_PARSE_CONS_RETURN_NONE) |
4696 | { | |
4697 | reloc_howto_type *reloc_howto; | |
252b5132 | 4698 | |
62ebcb5c AM |
4699 | reloc_howto = bfd_reloc_type_lookup (stdoutput, r); |
4700 | size = bfd_get_reloc_size (reloc_howto); | |
4701 | ||
4702 | if (size > nbytes) | |
4703 | { | |
992a06ee AM |
4704 | as_bad (ngettext ("%s relocations do not fit in %u byte", |
4705 | "%s relocations do not fit in %u bytes", | |
4706 | nbytes), | |
62ebcb5c AM |
4707 | reloc_howto->name, nbytes); |
4708 | return; | |
4709 | } | |
4710 | else if (target_big_endian) | |
4711 | offset = nbytes - size; | |
4712 | } | |
4713 | else | |
4714 | switch (size) | |
7ddd14de BW |
4715 | { |
4716 | case 1: | |
4717 | r = BFD_RELOC_8; | |
4718 | break; | |
4719 | case 2: | |
4720 | r = BFD_RELOC_16; | |
4721 | break; | |
d4f4f3fb AM |
4722 | case 3: |
4723 | r = BFD_RELOC_24; | |
4724 | break; | |
7ddd14de BW |
4725 | case 4: |
4726 | r = BFD_RELOC_32; | |
4727 | break; | |
4728 | case 8: | |
4729 | r = BFD_RELOC_64; | |
4730 | break; | |
4731 | default: | |
62ebcb5c AM |
4732 | as_bad (_("unsupported BFD relocation size %u"), size); |
4733 | return; | |
252b5132 | 4734 | } |
62ebcb5c AM |
4735 | fix_new_exp (frag, p - frag->fr_literal + offset, size, |
4736 | exp, 0, r); | |
252b5132 | 4737 | #endif |
252b5132 RH |
4738 | } |
4739 | \f | |
252b5132 RH |
4740 | /* Handle an MRI style string expression. */ |
4741 | ||
abd63a32 | 4742 | #ifdef TC_M68K |
252b5132 | 4743 | static void |
62ebcb5c | 4744 | parse_mri_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4745 | { |
4746 | if (*input_line_pointer != '\'' | |
4747 | && (input_line_pointer[1] != '\'' | |
4748 | || (*input_line_pointer != 'A' | |
4749 | && *input_line_pointer != 'E'))) | |
1e539319 | 4750 | (void) TC_PARSE_CONS_EXPRESSION (exp, nbytes); |
252b5132 RH |
4751 | else |
4752 | { | |
4753 | unsigned int scan; | |
4754 | unsigned int result = 0; | |
4755 | ||
4756 | /* An MRI style string. Cut into as many bytes as will fit into | |
4757 | a nbyte chunk, left justify if necessary, and separate with | |
4758 | commas so we can try again later. */ | |
4759 | if (*input_line_pointer == 'A') | |
4760 | ++input_line_pointer; | |
4761 | else if (*input_line_pointer == 'E') | |
4762 | { | |
4763 | as_bad (_("EBCDIC constants are not supported")); | |
4764 | ++input_line_pointer; | |
4765 | } | |
4766 | ||
4767 | input_line_pointer++; | |
4768 | for (scan = 0; scan < nbytes; scan++) | |
4769 | { | |
4770 | if (*input_line_pointer == '\'') | |
4771 | { | |
4772 | if (input_line_pointer[1] == '\'') | |
4773 | { | |
4774 | input_line_pointer++; | |
4775 | } | |
4776 | else | |
4777 | break; | |
4778 | } | |
4779 | result = (result << 8) | (*input_line_pointer++); | |
4780 | } | |
4781 | ||
041ff4dd | 4782 | /* Left justify. */ |
252b5132 RH |
4783 | while (scan < nbytes) |
4784 | { | |
4785 | result <<= 8; | |
4786 | scan++; | |
4787 | } | |
f0e652b4 | 4788 | |
041ff4dd | 4789 | /* Create correct expression. */ |
252b5132 RH |
4790 | exp->X_op = O_constant; |
4791 | exp->X_add_number = result; | |
f0e652b4 | 4792 | |
041ff4dd | 4793 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4794 | if (input_line_pointer[0] != '\'' || |
4795 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4796 | { | |
4797 | input_line_pointer -= 2; | |
4798 | input_line_pointer[0] = ','; | |
4799 | input_line_pointer[1] = '\''; | |
4800 | } | |
4801 | else | |
4802 | input_line_pointer++; | |
4803 | } | |
4804 | } | |
abd63a32 | 4805 | #endif /* TC_M68K */ |
252b5132 RH |
4806 | \f |
4807 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4808 | ||
4809 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4810 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4811 | object file COUNT times. | |
4812 | ||
4813 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4814 | ||
4815 | static void | |
e046cf80 | 4816 | parse_repeat_cons (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4817 | { |
4818 | expressionS count; | |
3d540e93 | 4819 | int i; |
252b5132 RH |
4820 | |
4821 | expression (exp); | |
4822 | ||
4823 | if (*input_line_pointer != ':') | |
4824 | { | |
4825 | /* No repeat count. */ | |
4826 | return; | |
4827 | } | |
4828 | ||
4829 | ++input_line_pointer; | |
4830 | expression (&count); | |
4831 | if (count.X_op != O_constant | |
4832 | || count.X_add_number <= 0) | |
4833 | { | |
0e389e77 | 4834 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4835 | return; |
4836 | } | |
4837 | ||
4838 | /* The cons function is going to output this expression once. So we | |
4839 | output it count - 1 times. */ | |
4840 | for (i = count.X_add_number - 1; i > 0; i--) | |
4841 | emit_expr (exp, nbytes); | |
4842 | } | |
4843 | ||
4844 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4845 | \f | |
4846 | /* Parse a floating point number represented as a hex constant. This | |
4847 | permits users to specify the exact bits they want in the floating | |
4848 | point number. */ | |
4849 | ||
4850 | static int | |
39e6acbd | 4851 | hex_float (int float_type, char *bytes) |
252b5132 | 4852 | { |
bcd17d4f | 4853 | int pad, length = float_length (float_type, &pad); |
252b5132 RH |
4854 | int i; |
4855 | ||
bcd17d4f JB |
4856 | if (length < 0) |
4857 | return length; | |
252b5132 RH |
4858 | |
4859 | /* It would be nice if we could go through expression to parse the | |
4860 | hex constant, but if we get a bignum it's a pain to sort it into | |
4861 | the buffer correctly. */ | |
4862 | i = 0; | |
4863 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4864 | { | |
4865 | int d; | |
4866 | ||
4867 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4868 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4869 | if (*input_line_pointer == '_') |
4870 | { | |
4871 | ++input_line_pointer; | |
4872 | continue; | |
4873 | } | |
4874 | ||
4875 | if (i >= length) | |
4876 | { | |
0e389e77 | 4877 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4878 | return -1; |
4879 | } | |
4880 | d = hex_value (*input_line_pointer) << 4; | |
4881 | ++input_line_pointer; | |
4882 | while (*input_line_pointer == '_') | |
4883 | ++input_line_pointer; | |
4884 | if (hex_p (*input_line_pointer)) | |
4885 | { | |
4886 | d += hex_value (*input_line_pointer); | |
4887 | ++input_line_pointer; | |
4888 | } | |
4889 | if (target_big_endian) | |
4890 | bytes[i] = d; | |
4891 | else | |
4892 | bytes[length - i - 1] = d; | |
4893 | ++i; | |
4894 | } | |
4895 | ||
4896 | if (i < length) | |
4897 | { | |
4898 | if (target_big_endian) | |
4899 | memset (bytes + i, 0, length - i); | |
4900 | else | |
4901 | memset (bytes, 0, length - i); | |
4902 | } | |
4903 | ||
8f2200fe JB |
4904 | memset (bytes + length, 0, pad); |
4905 | ||
4906 | return length + pad; | |
252b5132 RH |
4907 | } |
4908 | ||
d6415f6c | 4909 | /* float_cons() |
f0e652b4 | 4910 | |
041ff4dd NC |
4911 | CONStruct some more frag chars of .floats .ffloats etc. |
4912 | Makes 0 or more new frags. | |
4913 | If need_pass_2 == 1, no frags are emitted. | |
4914 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4915 | |
041ff4dd NC |
4916 | A floating constant is defined by atof_generic(), except it is preceded |
4917 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4918 | reading, I decided to be incompatible. This always tries to give you | |
4919 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4920 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4921 | a choice of 2 flavours of noise according to which of 2 floating-point |
4922 | scanners you directed AS to use. | |
f0e652b4 | 4923 | |
041ff4dd | 4924 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4925 | |
4926 | void | |
39e6acbd | 4927 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4928 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4929 | { |
3d540e93 | 4930 | char *p; |
041ff4dd | 4931 | int length; /* Number of chars in an object. */ |
252b5132 RH |
4932 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4933 | ||
4934 | if (is_it_end_of_statement ()) | |
4935 | { | |
4936 | demand_empty_rest_of_line (); | |
4937 | return; | |
4938 | } | |
4939 | ||
ec9ab52c JB |
4940 | if (now_seg == absolute_section) |
4941 | { | |
4942 | as_bad (_("attempt to store float in absolute section")); | |
4943 | ignore_rest_of_line (); | |
4944 | return; | |
4945 | } | |
4946 | ||
4947 | if (in_bss ()) | |
4948 | { | |
4949 | as_bad (_("attempt to store float in section `%s'"), | |
4950 | segment_name (now_seg)); | |
4951 | ignore_rest_of_line (); | |
4952 | return; | |
4953 | } | |
4954 | ||
252b5132 RH |
4955 | #ifdef md_flush_pending_output |
4956 | md_flush_pending_output (); | |
4957 | #endif | |
4958 | ||
cc3f603a JM |
4959 | #ifdef md_cons_align |
4960 | md_cons_align (1); | |
4961 | #endif | |
4962 | ||
252b5132 RH |
4963 | do |
4964 | { | |
bb32eac5 JB |
4965 | length = parse_one_float (float_type, temp); |
4966 | if (length < 0) | |
4967 | return; | |
252b5132 RH |
4968 | |
4969 | if (!need_pass_2) | |
4970 | { | |
4971 | int count; | |
4972 | ||
4973 | count = 1; | |
4974 | ||
4975 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4976 | if (*input_line_pointer == ':') | |
4977 | { | |
4978 | expressionS count_exp; | |
4979 | ||
4980 | ++input_line_pointer; | |
4981 | expression (&count_exp); | |
f0e652b4 | 4982 | |
252b5132 RH |
4983 | if (count_exp.X_op != O_constant |
4984 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4985 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4986 | else |
4987 | count = count_exp.X_add_number; | |
4988 | } | |
4989 | #endif | |
4990 | ||
4991 | while (--count >= 0) | |
4992 | { | |
4993 | p = frag_more (length); | |
4994 | memcpy (p, temp, (unsigned int) length); | |
4995 | } | |
4996 | } | |
4997 | SKIP_WHITESPACE (); | |
4998 | } | |
4999 | while (*input_line_pointer++ == ','); | |
5000 | ||
041ff4dd NC |
5001 | /* Put terminator back into stream. */ |
5002 | --input_line_pointer; | |
252b5132 | 5003 | demand_empty_rest_of_line (); |
041ff4dd | 5004 | } |
252b5132 | 5005 | \f |
9136aa49 | 5006 | /* LEB128 Encoding. |
252b5132 | 5007 | |
9136aa49 DG |
5008 | Note - we are using the DWARF standard's definition of LEB128 encoding |
5009 | where each 7-bit value is a stored in a byte, *not* an octet. This | |
5010 | means that on targets where a byte contains multiple octets there is | |
5011 | a *huge waste of space*. (This also means that we do not have to | |
5012 | have special versions of these functions for when OCTETS_PER_BYTE_POWER | |
5013 | is non-zero). | |
5014 | ||
5015 | If the 7-bit values were to be packed into N-bit bytes (where N > 8) | |
5016 | we would then have to consider whether multiple, successive LEB128 | |
5017 | values should be packed into the bytes without padding (bad idea) or | |
5018 | whether each LEB128 number is padded out to a whole number of bytes. | |
5019 | Plus you have to decide on the endianness of packing octets into a | |
5020 | byte. */ | |
5021 | ||
5022 | /* Return the size of a LEB128 value in bytes. */ | |
5023 | ||
5024 | static inline unsigned int | |
39e6acbd | 5025 | sizeof_sleb128 (offsetT value) |
252b5132 | 5026 | { |
3d540e93 NC |
5027 | int size = 0; |
5028 | unsigned byte; | |
252b5132 RH |
5029 | |
5030 | do | |
5031 | { | |
5032 | byte = (value & 0x7f); | |
5033 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5034 | Fortunately, we can structure things so that the extra work reduces | |
5035 | to a noop on systems that do things "properly". */ | |
5036 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5037 | size += 1; | |
5038 | } | |
5039 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
5040 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5041 | ||
5042 | return size; | |
5043 | } | |
5044 | ||
9136aa49 | 5045 | static inline unsigned int |
39e6acbd | 5046 | sizeof_uleb128 (valueT value) |
252b5132 | 5047 | { |
3d540e93 | 5048 | int size = 0; |
252b5132 RH |
5049 | |
5050 | do | |
5051 | { | |
252b5132 RH |
5052 | value >>= 7; |
5053 | size += 1; | |
5054 | } | |
5055 | while (value != 0); | |
5056 | ||
5057 | return size; | |
5058 | } | |
5059 | ||
9136aa49 | 5060 | unsigned int |
39e6acbd | 5061 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
5062 | { |
5063 | if (sign) | |
5064 | return sizeof_sleb128 ((offsetT) value); | |
5065 | else | |
5066 | return sizeof_uleb128 (value); | |
5067 | } | |
5068 | ||
9136aa49 | 5069 | /* Output a LEB128 value. Returns the number of bytes used. */ |
252b5132 | 5070 | |
9136aa49 | 5071 | static inline unsigned int |
39e6acbd | 5072 | output_sleb128 (char *p, offsetT value) |
252b5132 | 5073 | { |
3d540e93 NC |
5074 | char *orig = p; |
5075 | int more; | |
252b5132 RH |
5076 | |
5077 | do | |
5078 | { | |
5079 | unsigned byte = (value & 0x7f); | |
5080 | ||
5081 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
5082 | Fortunately, we can structure things so that the extra work reduces | |
5083 | to a noop on systems that do things "properly". */ | |
5084 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
5085 | ||
5086 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
5087 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
5088 | if (more) | |
5089 | byte |= 0x80; | |
5090 | ||
5091 | *p++ = byte; | |
5092 | } | |
5093 | while (more); | |
5094 | ||
5095 | return p - orig; | |
5096 | } | |
5097 | ||
9136aa49 | 5098 | static inline unsigned int |
39e6acbd | 5099 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
5100 | { |
5101 | char *orig = p; | |
5102 | ||
5103 | do | |
5104 | { | |
5105 | unsigned byte = (value & 0x7f); | |
9136aa49 | 5106 | |
252b5132 RH |
5107 | value >>= 7; |
5108 | if (value != 0) | |
5109 | /* More bytes to follow. */ | |
5110 | byte |= 0x80; | |
5111 | ||
5112 | *p++ = byte; | |
5113 | } | |
5114 | while (value != 0); | |
5115 | ||
5116 | return p - orig; | |
5117 | } | |
5118 | ||
9136aa49 | 5119 | unsigned int |
39e6acbd | 5120 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
5121 | { |
5122 | if (sign) | |
5123 | return output_sleb128 (p, (offsetT) value); | |
5124 | else | |
5125 | return output_uleb128 (p, value); | |
5126 | } | |
5127 | ||
5128 | /* Do the same for bignums. We combine sizeof with output here in that | |
5129 | we don't output for NULL values of P. It isn't really as critical as | |
9136aa49 DG |
5130 | for "normal" values that this be streamlined. Returns the number of |
5131 | bytes used. */ | |
252b5132 | 5132 | |
9136aa49 DG |
5133 | static inline unsigned int |
5134 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5135 | { |
5136 | char *orig = p; | |
5137 | valueT val = 0; | |
5138 | int loaded = 0; | |
5139 | unsigned byte; | |
5140 | ||
5141 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
5142 | while (size > 1 |
5143 | && bignum[size - 1] == LITTLENUM_MASK | |
5144 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
5145 | size--; |
5146 | ||
5147 | do | |
5148 | { | |
e5604d79 RS |
5149 | /* OR in the next part of the littlenum. */ |
5150 | val |= (*bignum << loaded); | |
5151 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
5152 | size--; | |
5153 | bignum++; | |
5154 | ||
5155 | /* Add bytes until there are less than 7 bits left in VAL | |
5156 | or until every non-sign bit has been written. */ | |
5157 | do | |
252b5132 | 5158 | { |
e5604d79 RS |
5159 | byte = val & 0x7f; |
5160 | loaded -= 7; | |
5161 | val >>= 7; | |
5162 | if (size > 0 | |
5163 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 5164 | byte |= 0x80; |
e5604d79 RS |
5165 | |
5166 | if (orig) | |
5167 | *p = byte; | |
5168 | p++; | |
252b5132 | 5169 | } |
e5604d79 RS |
5170 | while ((byte & 0x80) != 0 && loaded >= 7); |
5171 | } | |
5172 | while (size > 0); | |
252b5132 | 5173 | |
e5604d79 RS |
5174 | /* Mop up any left-over bits (of which there will be less than 7). */ |
5175 | if ((byte & 0x80) != 0) | |
5176 | { | |
5177 | /* Sign-extend VAL. */ | |
5178 | if (val & (1 << (loaded - 1))) | |
29798047 | 5179 | val |= ~0U << loaded; |
252b5132 | 5180 | if (orig) |
e5604d79 | 5181 | *p = val & 0x7f; |
252b5132 RH |
5182 | p++; |
5183 | } | |
252b5132 RH |
5184 | |
5185 | return p - orig; | |
5186 | } | |
5187 | ||
9136aa49 DG |
5188 | static inline unsigned int |
5189 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size) | |
252b5132 RH |
5190 | { |
5191 | char *orig = p; | |
5192 | valueT val = 0; | |
5193 | int loaded = 0; | |
5194 | unsigned byte; | |
5195 | ||
5196 | /* Strip leading zeros off the bignum. */ | |
5197 | /* XXX: Is this needed? */ | |
041ff4dd | 5198 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
5199 | size--; |
5200 | ||
5201 | do | |
5202 | { | |
5203 | if (loaded < 7 && size > 0) | |
5204 | { | |
5205 | val |= (*bignum << loaded); | |
5206 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5207 | size--; | |
5208 | bignum++; | |
5209 | } | |
5210 | ||
5211 | byte = val & 0x7f; | |
5212 | loaded -= 7; | |
5213 | val >>= 7; | |
5214 | ||
5215 | if (size > 0 || val) | |
5216 | byte |= 0x80; | |
5217 | ||
5218 | if (orig) | |
5219 | *p = byte; | |
5220 | p++; | |
5221 | } | |
5222 | while (byte & 0x80); | |
5223 | ||
5224 | return p - orig; | |
5225 | } | |
5226 | ||
9136aa49 DG |
5227 | static unsigned int |
5228 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, unsigned int size, int sign) | |
252b5132 RH |
5229 | { |
5230 | if (sign) | |
5231 | return output_big_sleb128 (p, bignum, size); | |
5232 | else | |
5233 | return output_big_uleb128 (p, bignum, size); | |
5234 | } | |
5235 | ||
5236 | /* Generate the appropriate fragments for a given expression to emit a | |
9a724e7b | 5237 | leb128 value. SIGN is 1 for sleb, 0 for uleb. */ |
252b5132 | 5238 | |
6b9a135d | 5239 | void |
39e6acbd | 5240 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5241 | { |
5242 | operatorT op = exp->X_op; | |
b7712f8d | 5243 | unsigned int nbytes; |
252b5132 RH |
5244 | |
5245 | if (op == O_absent || op == O_illegal) | |
5246 | { | |
5247 | as_warn (_("zero assumed for missing expression")); | |
5248 | exp->X_add_number = 0; | |
5249 | op = O_constant; | |
5250 | } | |
5251 | else if (op == O_big && exp->X_add_number <= 0) | |
5252 | { | |
0e389e77 | 5253 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5254 | exp->X_add_number = 0; |
5255 | op = O_constant; | |
5256 | } | |
5257 | else if (op == O_register) | |
5258 | { | |
5259 | as_warn (_("register value used as expression")); | |
5260 | op = O_constant; | |
5261 | } | |
e5604d79 RS |
5262 | else if (op == O_constant |
5263 | && sign | |
956a6ba3 | 5264 | && (exp->X_add_number < 0) == !exp->X_extrabit) |
e5604d79 RS |
5265 | { |
5266 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5267 | doesn't reflect the sign of the original value. Convert EXP | |
5268 | to a correctly-extended bignum instead. */ | |
956a6ba3 | 5269 | convert_to_bignum (exp, exp->X_extrabit); |
e5604d79 RS |
5270 | op = O_big; |
5271 | } | |
252b5132 | 5272 | |
ec9ab52c JB |
5273 | if (now_seg == absolute_section) |
5274 | { | |
5275 | if (op != O_constant || exp->X_add_number != 0) | |
5276 | as_bad (_("attempt to store value in absolute section")); | |
5277 | abs_section_offset++; | |
5278 | return; | |
5279 | } | |
5280 | ||
5281 | if ((op != O_constant || exp->X_add_number != 0) && in_bss ()) | |
5282 | as_bad (_("attempt to store non-zero value in section `%s'"), | |
5283 | segment_name (now_seg)); | |
5284 | ||
67a659f6 RH |
5285 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5286 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5287 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5288 | if (check_eh_frame (exp, &nbytes)) |
5289 | abort (); | |
5290 | ||
371b7465 RH |
5291 | /* Let the backend know that subsequent data may be byte aligned. */ |
5292 | #ifdef md_cons_align | |
5293 | md_cons_align (1); | |
5294 | #endif | |
5295 | ||
252b5132 RH |
5296 | if (op == O_constant) |
5297 | { | |
5298 | /* If we've got a constant, emit the thing directly right now. */ | |
5299 | ||
5300 | valueT value = exp->X_add_number; | |
9136aa49 | 5301 | unsigned int size; |
252b5132 RH |
5302 | char *p; |
5303 | ||
5304 | size = sizeof_leb128 (value, sign); | |
5305 | p = frag_more (size); | |
9136aa49 DG |
5306 | if (output_leb128 (p, value, sign) > size) |
5307 | abort (); | |
252b5132 RH |
5308 | } |
5309 | else if (op == O_big) | |
5310 | { | |
5311 | /* O_big is a different sort of constant. */ | |
74def31d | 5312 | int nbr_digits = exp->X_add_number; |
9136aa49 | 5313 | unsigned int size; |
252b5132 RH |
5314 | char *p; |
5315 | ||
74def31d TG |
5316 | /* If the leading littenum is 0xffff, prepend a 0 to avoid confusion with |
5317 | a signed number. Unary operators like - or ~ always extend the | |
5318 | bignum to its largest size. */ | |
5319 | if (exp->X_unsigned | |
5320 | && nbr_digits < SIZE_OF_LARGE_NUMBER | |
5321 | && generic_bignum[nbr_digits - 1] == LITTLENUM_MASK) | |
5322 | generic_bignum[nbr_digits++] = 0; | |
5323 | ||
5324 | size = output_big_leb128 (NULL, generic_bignum, nbr_digits, sign); | |
252b5132 | 5325 | p = frag_more (size); |
74def31d | 5326 | if (output_big_leb128 (p, generic_bignum, nbr_digits, sign) > size) |
9136aa49 | 5327 | abort (); |
252b5132 RH |
5328 | } |
5329 | else | |
5330 | { | |
041ff4dd | 5331 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5332 | resolve things later. */ |
5333 | ||
041ff4dd | 5334 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5335 | make_expr_symbol (exp), 0, (char *) NULL); |
5336 | } | |
5337 | } | |
5338 | ||
5339 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5340 | ||
5341 | void | |
39e6acbd | 5342 | s_leb128 (int sign) |
252b5132 RH |
5343 | { |
5344 | expressionS exp; | |
5345 | ||
00bbdfe7 BW |
5346 | #ifdef md_flush_pending_output |
5347 | md_flush_pending_output (); | |
5348 | #endif | |
5349 | ||
041ff4dd NC |
5350 | do |
5351 | { | |
38cf168b | 5352 | expression (&exp); |
041ff4dd NC |
5353 | emit_leb128_expr (&exp, sign); |
5354 | } | |
5355 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5356 | |
5357 | input_line_pointer--; | |
5358 | demand_empty_rest_of_line (); | |
5359 | } | |
5360 | \f | |
38a57ae7 NC |
5361 | static void |
5362 | stringer_append_char (int c, int bitsize) | |
5363 | { | |
ec9ab52c JB |
5364 | if (c && in_bss ()) |
5365 | as_bad (_("attempt to store non-empty string in section `%s'"), | |
5366 | segment_name (now_seg)); | |
5367 | ||
38a57ae7 NC |
5368 | if (!target_big_endian) |
5369 | FRAG_APPEND_1_CHAR (c); | |
5370 | ||
5371 | switch (bitsize) | |
5372 | { | |
5373 | case 64: | |
5374 | FRAG_APPEND_1_CHAR (0); | |
5375 | FRAG_APPEND_1_CHAR (0); | |
5376 | FRAG_APPEND_1_CHAR (0); | |
5377 | FRAG_APPEND_1_CHAR (0); | |
5378 | /* Fall through. */ | |
5379 | case 32: | |
5380 | FRAG_APPEND_1_CHAR (0); | |
5381 | FRAG_APPEND_1_CHAR (0); | |
5382 | /* Fall through. */ | |
5383 | case 16: | |
5384 | FRAG_APPEND_1_CHAR (0); | |
5385 | /* Fall through. */ | |
5386 | case 8: | |
5387 | break; | |
5388 | default: | |
5389 | /* Called with invalid bitsize argument. */ | |
5390 | abort (); | |
5391 | break; | |
5392 | } | |
5393 | if (target_big_endian) | |
5394 | FRAG_APPEND_1_CHAR (c); | |
5395 | } | |
5396 | ||
5397 | /* Worker to do .ascii etc statements. | |
5398 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5399 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5400 | check it. |
5401 | Checks for end-of-line. | |
5402 | BITS_APPENDZERO says how many bits are in a target char. | |
5403 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5404 | |
5405 | void | |
38a57ae7 | 5406 | stringer (int bits_appendzero) |
252b5132 | 5407 | { |
38a57ae7 NC |
5408 | const int bitsize = bits_appendzero & ~7; |
5409 | const int append_zero = bits_appendzero & 1; | |
5410 | unsigned int c; | |
87975d2a | 5411 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5412 | char *start; |
87975d2a | 5413 | #endif |
252b5132 RH |
5414 | |
5415 | #ifdef md_flush_pending_output | |
5416 | md_flush_pending_output (); | |
5417 | #endif | |
5418 | ||
cc3f603a JM |
5419 | #ifdef md_cons_align |
5420 | md_cons_align (1); | |
5421 | #endif | |
5422 | ||
35c1a439 JB |
5423 | /* If we have been switched into the abs_section then we |
5424 | will not have an obstack onto which we can hang strings. */ | |
5425 | if (now_seg == absolute_section) | |
5426 | { | |
5427 | as_bad (_("strings must be placed into a section")); | |
5428 | ignore_rest_of_line (); | |
5429 | return; | |
5430 | } | |
5431 | ||
041ff4dd NC |
5432 | /* The following awkward logic is to parse ZERO or more strings, |
5433 | comma separated. Recall a string expression includes spaces | |
5434 | before the opening '\"' and spaces after the closing '\"'. | |
5435 | We fake a leading ',' if there is (supposed to be) | |
5436 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5437 | if (is_it_end_of_statement ()) |
5438 | { | |
041ff4dd NC |
5439 | c = 0; /* Skip loop. */ |
5440 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5441 | } |
5442 | else | |
5443 | { | |
041ff4dd | 5444 | c = ','; /* Do loop. */ |
252b5132 | 5445 | } |
d6415f6c | 5446 | |
252b5132 RH |
5447 | while (c == ',' || c == '<' || c == '"') |
5448 | { | |
5449 | SKIP_WHITESPACE (); | |
5450 | switch (*input_line_pointer) | |
5451 | { | |
5452 | case '\"': | |
041ff4dd | 5453 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5454 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5455 | start = input_line_pointer; |
87975d2a | 5456 | #endif |
38a57ae7 | 5457 | |
252b5132 | 5458 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5459 | stringer_append_char (c, bitsize); |
5460 | ||
3d955acb NC |
5461 | /* Treat "a" "b" as "ab". Even if we are appending zeros. */ |
5462 | SKIP_ALL_WHITESPACE (); | |
5463 | if (*input_line_pointer == '"') | |
5464 | break; | |
5465 | ||
252b5132 | 5466 | if (append_zero) |
38a57ae7 NC |
5467 | stringer_append_char (0, bitsize); |
5468 | ||
87975d2a | 5469 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5470 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5471 | will emit .string with a filename in the .debug section |
5472 | after a sequence of constants. See the comment in | |
5473 | emit_expr for the sequence. emit_expr will set | |
5474 | dwarf_file_string to non-zero if this string might be a | |
5475 | source file name. */ | |
252b5132 RH |
5476 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5477 | dwarf_file_string = 0; | |
5478 | else if (dwarf_file_string) | |
5479 | { | |
5480 | c = input_line_pointer[-1]; | |
5481 | input_line_pointer[-1] = '\0'; | |
5482 | listing_source_file (start); | |
5483 | input_line_pointer[-1] = c; | |
5484 | } | |
252b5132 RH |
5485 | #endif |
5486 | ||
5487 | break; | |
5488 | case '<': | |
5489 | input_line_pointer++; | |
5490 | c = get_single_number (); | |
38a57ae7 | 5491 | stringer_append_char (c, bitsize); |
252b5132 | 5492 | if (*input_line_pointer != '>') |
bdfb4455 WH |
5493 | { |
5494 | as_bad (_("expected <nn>")); | |
5495 | ignore_rest_of_line (); | |
5496 | return; | |
5497 | } | |
252b5132 RH |
5498 | input_line_pointer++; |
5499 | break; | |
5500 | case ',': | |
5501 | input_line_pointer++; | |
5502 | break; | |
5503 | } | |
5504 | SKIP_WHITESPACE (); | |
5505 | c = *input_line_pointer; | |
5506 | } | |
5507 | ||
5508 | demand_empty_rest_of_line (); | |
38a57ae7 | 5509 | } |
252b5132 RH |
5510 | \f |
5511 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5512 | high bits set. We'll probably also have trouble with | |
5513 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5514 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5515 | |
041ff4dd | 5516 | unsigned int |
39e6acbd | 5517 | next_char_of_string (void) |
252b5132 | 5518 | { |
3d540e93 | 5519 | unsigned int c; |
252b5132 RH |
5520 | |
5521 | c = *input_line_pointer++ & CHAR_MASK; | |
5522 | switch (c) | |
5523 | { | |
f49547a6 NC |
5524 | case 0: |
5525 | /* PR 20902: Do not advance past the end of the buffer. */ | |
5526 | -- input_line_pointer; | |
5527 | c = NOT_A_CHAR; | |
5528 | break; | |
5529 | ||
252b5132 RH |
5530 | case '\"': |
5531 | c = NOT_A_CHAR; | |
5532 | break; | |
5533 | ||
5534 | case '\n': | |
0e389e77 | 5535 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5536 | bump_line_counters (); |
5537 | break; | |
5538 | ||
252b5132 | 5539 | case '\\': |
16d87673 SB |
5540 | if (!TC_STRING_ESCAPES) |
5541 | break; | |
d9800776 | 5542 | switch (c = *input_line_pointer++ & CHAR_MASK) |
252b5132 RH |
5543 | { |
5544 | case 'b': | |
5545 | c = '\b'; | |
5546 | break; | |
5547 | ||
5548 | case 'f': | |
5549 | c = '\f'; | |
5550 | break; | |
5551 | ||
5552 | case 'n': | |
5553 | c = '\n'; | |
5554 | break; | |
5555 | ||
5556 | case 'r': | |
5557 | c = '\r'; | |
5558 | break; | |
5559 | ||
5560 | case 't': | |
5561 | c = '\t'; | |
5562 | break; | |
5563 | ||
5564 | case 'v': | |
5565 | c = '\013'; | |
5566 | break; | |
5567 | ||
5568 | case '\\': | |
5569 | case '"': | |
041ff4dd | 5570 | break; /* As itself. */ |
252b5132 RH |
5571 | |
5572 | case '0': | |
5573 | case '1': | |
5574 | case '2': | |
5575 | case '3': | |
5576 | case '4': | |
5577 | case '5': | |
5578 | case '6': | |
5579 | case '7': | |
5580 | case '8': | |
5581 | case '9': | |
5582 | { | |
b685de86 | 5583 | unsigned number; |
252b5132 RH |
5584 | int i; |
5585 | ||
041ff4dd | 5586 | for (i = 0, number = 0; |
3882b010 | 5587 | ISDIGIT (c) && i < 3; |
041ff4dd | 5588 | c = *input_line_pointer++, i++) |
252b5132 RH |
5589 | { |
5590 | number = number * 8 + c - '0'; | |
5591 | } | |
f0e652b4 | 5592 | |
d9800776 | 5593 | c = number & CHAR_MASK; |
252b5132 RH |
5594 | } |
5595 | --input_line_pointer; | |
5596 | break; | |
5597 | ||
5598 | case 'x': | |
5599 | case 'X': | |
5600 | { | |
b685de86 | 5601 | unsigned number; |
252b5132 RH |
5602 | |
5603 | number = 0; | |
5604 | c = *input_line_pointer++; | |
3882b010 | 5605 | while (ISXDIGIT (c)) |
252b5132 | 5606 | { |
3882b010 | 5607 | if (ISDIGIT (c)) |
252b5132 | 5608 | number = number * 16 + c - '0'; |
3882b010 | 5609 | else if (ISUPPER (c)) |
252b5132 RH |
5610 | number = number * 16 + c - 'A' + 10; |
5611 | else | |
5612 | number = number * 16 + c - 'a' + 10; | |
5613 | c = *input_line_pointer++; | |
5614 | } | |
d9800776 | 5615 | c = number & CHAR_MASK; |
252b5132 RH |
5616 | --input_line_pointer; |
5617 | } | |
5618 | break; | |
5619 | ||
5620 | case '\n': | |
041ff4dd | 5621 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5622 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5623 | c = '\n'; |
5624 | bump_line_counters (); | |
5625 | break; | |
5626 | ||
f49547a6 NC |
5627 | case 0: |
5628 | /* Do not advance past the end of the buffer. */ | |
5629 | -- input_line_pointer; | |
5630 | c = NOT_A_CHAR; | |
5631 | break; | |
5632 | ||
252b5132 RH |
5633 | default: |
5634 | ||
5635 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5636 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5637 | c = '?'; |
5638 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5639 | ||
5640 | break; | |
041ff4dd | 5641 | } |
252b5132 | 5642 | break; |
252b5132 RH |
5643 | |
5644 | default: | |
5645 | break; | |
041ff4dd | 5646 | } |
252b5132 | 5647 | return (c); |
041ff4dd | 5648 | } |
252b5132 RH |
5649 | \f |
5650 | static segT | |
3d540e93 | 5651 | get_segmented_expression (expressionS *expP) |
252b5132 | 5652 | { |
3d540e93 | 5653 | segT retval; |
252b5132 RH |
5654 | |
5655 | retval = expression (expP); | |
5656 | if (expP->X_op == O_illegal | |
5657 | || expP->X_op == O_absent | |
5658 | || expP->X_op == O_big) | |
5659 | { | |
0e389e77 | 5660 | as_bad (_("expected address expression")); |
252b5132 RH |
5661 | expP->X_op = O_constant; |
5662 | expP->X_add_number = 0; | |
5663 | retval = absolute_section; | |
5664 | } | |
5665 | return retval; | |
5666 | } | |
5667 | ||
041ff4dd | 5668 | static segT |
3d540e93 | 5669 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5670 | { |
259af69e | 5671 | segT retval = get_segmented_expression (expP); |
252b5132 | 5672 | |
259af69e | 5673 | if (retval == undefined_section) |
252b5132 RH |
5674 | { |
5675 | /* There is no easy way to extract the undefined symbol from the | |
5676 | expression. */ | |
5677 | if (expP->X_add_symbol != NULL | |
5678 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5679 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5680 | S_GET_NAME (expP->X_add_symbol)); | |
5681 | else | |
5682 | as_warn (_("some symbol undefined; zero assumed")); | |
5683 | retval = absolute_section; | |
5684 | expP->X_op = O_constant; | |
5685 | expP->X_add_number = 0; | |
5686 | } | |
259af69e | 5687 | return retval; |
041ff4dd | 5688 | } |
252b5132 | 5689 | |
041ff4dd | 5690 | char /* Return terminator. */ |
39e6acbd | 5691 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5692 | { |
5693 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5694 | *val_pointer = (long) get_absolute_expression (); | |
5695 | return (*input_line_pointer++); | |
5696 | } | |
5697 | \f | |
041ff4dd NC |
5698 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5699 | Give a warning if that happens. */ | |
5700 | ||
252b5132 | 5701 | char * |
39e6acbd | 5702 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5703 | { |
3d540e93 | 5704 | char *s; |
252b5132 RH |
5705 | |
5706 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5707 | { | |
3d540e93 | 5708 | int len; |
252b5132 RH |
5709 | |
5710 | for (len = *len_pointer; len > 0; len--) | |
5711 | { | |
70433886 | 5712 | if (s[len - 1] == 0) |
252b5132 RH |
5713 | { |
5714 | s = 0; | |
252b5132 | 5715 | *len_pointer = 0; |
0e389e77 | 5716 | as_bad (_("this string may not contain \'\\0\'")); |
70433886 | 5717 | break; |
252b5132 RH |
5718 | } |
5719 | } | |
5720 | } | |
f0e652b4 | 5721 | |
252b5132 RH |
5722 | return s; |
5723 | } | |
5724 | \f | |
041ff4dd NC |
5725 | /* Demand string, but return a safe (=private) copy of the string. |
5726 | Return NULL if we can't read a string here. */ | |
5727 | ||
252b5132 | 5728 | char * |
39e6acbd | 5729 | demand_copy_string (int *lenP) |
252b5132 | 5730 | { |
3d540e93 NC |
5731 | unsigned int c; |
5732 | int len; | |
252b5132 RH |
5733 | char *retval; |
5734 | ||
5735 | len = 0; | |
5736 | SKIP_WHITESPACE (); | |
5737 | if (*input_line_pointer == '\"') | |
5738 | { | |
041ff4dd | 5739 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5740 | |
5741 | while (is_a_char (c = next_char_of_string ())) | |
5742 | { | |
5743 | obstack_1grow (¬es, c); | |
5744 | len++; | |
5745 | } | |
5746 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5747 | null terminated string. */ |
252b5132 | 5748 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5749 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5750 | } |
5751 | else | |
5752 | { | |
c95b35a9 | 5753 | as_bad (_("missing string")); |
252b5132 RH |
5754 | retval = NULL; |
5755 | ignore_rest_of_line (); | |
5756 | } | |
5757 | *lenP = len; | |
5758 | return (retval); | |
041ff4dd | 5759 | } |
252b5132 | 5760 | \f |
041ff4dd | 5761 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5762 | |
041ff4dd | 5763 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5764 | |
041ff4dd NC |
5765 | Out: 1 if input_line_pointer->end-of-line. */ |
5766 | ||
5767 | int | |
39e6acbd | 5768 | is_it_end_of_statement (void) |
252b5132 RH |
5769 | { |
5770 | SKIP_WHITESPACE (); | |
5771 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5772 | } |
252b5132 | 5773 | |
041ff4dd | 5774 | void |
39e6acbd | 5775 | equals (char *sym_name, int reassign) |
252b5132 | 5776 | { |
252b5132 | 5777 | char *stop = NULL; |
fb25138b | 5778 | char stopc = 0; |
252b5132 RH |
5779 | |
5780 | input_line_pointer++; | |
5781 | if (*input_line_pointer == '=') | |
5782 | input_line_pointer++; | |
9497f5ac NC |
5783 | if (reassign < 0 && *input_line_pointer == '=') |
5784 | input_line_pointer++; | |
252b5132 RH |
5785 | |
5786 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5787 | input_line_pointer++; | |
5788 | ||
5789 | if (flag_mri) | |
5790 | stop = mri_comment_field (&stopc); | |
5791 | ||
9497f5ac | 5792 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5793 | |
5794 | if (flag_mri) | |
31d20a21 AM |
5795 | { |
5796 | demand_empty_rest_of_line (); | |
5797 | mri_comment_end (stop, stopc); | |
5798 | } | |
041ff4dd | 5799 | } |
252b5132 | 5800 | |
adb9ac5f AM |
5801 | /* Open FILENAME, first trying the unadorned file name, then if that |
5802 | fails and the file name is not an absolute path, attempt to open | |
5803 | the file in current -I include paths. PATH is a preallocated | |
5804 | buffer which will be set to the file opened, or FILENAME if no file | |
5805 | is found. */ | |
5806 | ||
5807 | FILE * | |
5808 | search_and_open (const char *filename, char *path) | |
5809 | { | |
5810 | FILE *f = fopen (filename, FOPEN_RB); | |
5811 | if (f == NULL && !IS_ABSOLUTE_PATH (filename)) | |
5812 | { | |
5813 | for (size_t i = 0; i < include_dir_count; i++) | |
5814 | { | |
5815 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5816 | f = fopen (path, FOPEN_RB); | |
5817 | if (f != NULL) | |
5818 | return f; | |
5819 | } | |
5820 | } | |
5821 | strcpy (path, filename); | |
5822 | return f; | |
5823 | } | |
5824 | ||
7e005732 NC |
5825 | /* .incbin -- include a file verbatim at the current location. */ |
5826 | ||
5827 | void | |
39e6acbd | 5828 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5829 | { |
5830 | FILE * binfile; | |
5831 | char * path; | |
5832 | char * filename; | |
5833 | char * binfrag; | |
5834 | long skip = 0; | |
5835 | long count = 0; | |
5836 | long bytes; | |
5837 | int len; | |
5838 | ||
5839 | #ifdef md_flush_pending_output | |
5840 | md_flush_pending_output (); | |
5841 | #endif | |
5842 | ||
cc3f603a JM |
5843 | #ifdef md_cons_align |
5844 | md_cons_align (1); | |
5845 | #endif | |
5846 | ||
7e005732 NC |
5847 | SKIP_WHITESPACE (); |
5848 | filename = demand_copy_string (& len); | |
5849 | if (filename == NULL) | |
5850 | return; | |
5851 | ||
5852 | SKIP_WHITESPACE (); | |
5853 | ||
5854 | /* Look for optional skip and count. */ | |
5855 | if (* input_line_pointer == ',') | |
5856 | { | |
5857 | ++ input_line_pointer; | |
5858 | skip = get_absolute_expression (); | |
5859 | ||
5860 | SKIP_WHITESPACE (); | |
5861 | ||
5862 | if (* input_line_pointer == ',') | |
5863 | { | |
5864 | ++ input_line_pointer; | |
5865 | ||
5866 | count = get_absolute_expression (); | |
5867 | if (count == 0) | |
5868 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5869 | ||
5870 | SKIP_WHITESPACE (); | |
5871 | } | |
5872 | } | |
5873 | ||
5874 | demand_empty_rest_of_line (); | |
5875 | ||
adb9ac5f AM |
5876 | path = XNEWVEC (char, len + include_dir_maxlen + 2); |
5877 | binfile = search_and_open (filename, path); | |
7e005732 | 5878 | |
adb9ac5f AM |
5879 | if (binfile == NULL) |
5880 | as_bad (_("file not found: %s"), filename); | |
7e005732 | 5881 | else |
7e005732 | 5882 | { |
f740e790 | 5883 | long file_len; |
284beb43 | 5884 | struct stat filestat; |
f740e790 | 5885 | |
284beb43 NC |
5886 | if (fstat (fileno (binfile), &filestat) != 0 |
5887 | || ! S_ISREG (filestat.st_mode) | |
5888 | || S_ISDIR (filestat.st_mode)) | |
5889 | { | |
5890 | as_bad (_("unable to include `%s'"), path); | |
5891 | goto done; | |
5892 | } | |
5893 | ||
7e005732 NC |
5894 | register_dependency (path); |
5895 | ||
5896 | /* Compute the length of the file. */ | |
5897 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5898 | { | |
5899 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5900 | goto done; | |
5901 | } | |
f740e790 | 5902 | file_len = ftell (binfile); |
7e005732 | 5903 | |
c556cc9c | 5904 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5905 | if (count == 0) |
c556cc9c | 5906 | count = file_len - skip; |
7e005732 | 5907 | |
c556cc9c | 5908 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5909 | { |
c556cc9c | 5910 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5911 | skip, count, file_len); |
7e005732 NC |
5912 | goto done; |
5913 | } | |
5914 | ||
5915 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5916 | { | |
5917 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5918 | goto done; | |
5919 | } | |
5920 | ||
5921 | /* Allocate frag space and store file contents in it. */ | |
5922 | binfrag = frag_more (count); | |
5923 | ||
5924 | bytes = fread (binfrag, 1, count, binfile); | |
5925 | if (bytes < count) | |
5926 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5927 | path, bytes, count); | |
5928 | } | |
dc1e8a47 | 5929 | done: |
7e005732 NC |
5930 | if (binfile != NULL) |
5931 | fclose (binfile); | |
9fbb53c7 | 5932 | free (path); |
7e005732 NC |
5933 | } |
5934 | ||
041ff4dd | 5935 | /* .include -- include a file at this point. */ |
252b5132 | 5936 | |
041ff4dd | 5937 | void |
39e6acbd | 5938 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5939 | { |
252b5132 RH |
5940 | char *filename; |
5941 | int i; | |
1e9cc1c2 | 5942 | FILE *try_file; |
252b5132 RH |
5943 | char *path; |
5944 | ||
041ff4dd | 5945 | if (!flag_m68k_mri) |
252b5132 RH |
5946 | { |
5947 | filename = demand_copy_string (&i); | |
5948 | if (filename == NULL) | |
5949 | { | |
5950 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5951 | called ignore_rest_of_line. */ |
252b5132 RH |
5952 | return; |
5953 | } | |
5954 | } | |
5955 | else | |
5956 | { | |
5957 | SKIP_WHITESPACE (); | |
5958 | i = 0; | |
041ff4dd | 5959 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5960 | && *input_line_pointer != ' ' |
5961 | && *input_line_pointer != '\t') | |
5962 | { | |
5963 | obstack_1grow (¬es, *input_line_pointer); | |
5964 | ++input_line_pointer; | |
5965 | ++i; | |
5966 | } | |
f0e652b4 | 5967 | |
252b5132 | 5968 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5969 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5970 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5971 | ++input_line_pointer; |
5972 | } | |
f0e652b4 | 5973 | |
252b5132 | 5974 | demand_empty_rest_of_line (); |
f0e652b4 | 5975 | |
adb9ac5f AM |
5976 | path = notes_alloc (i + include_dir_maxlen + 2); |
5977 | try_file = search_and_open (filename, path); | |
5978 | if (try_file) | |
5979 | fclose (try_file); | |
f0e652b4 | 5980 | |
252b5132 | 5981 | register_dependency (path); |
9f10757c | 5982 | input_scrub_insert_file (path); |
041ff4dd | 5983 | } |
252b5132 | 5984 | |
041ff4dd | 5985 | void |
adb9ac5f | 5986 | init_include_dir (void) |
252b5132 | 5987 | { |
adb9ac5f AM |
5988 | include_dirs = XNEWVEC (const char *, 1); |
5989 | include_dirs[0] = "."; /* Current dir. */ | |
5990 | include_dir_count = 1; | |
5991 | include_dir_maxlen = 1; | |
5992 | } | |
252b5132 | 5993 | |
adb9ac5f AM |
5994 | void |
5995 | add_include_dir (char *path) | |
5996 | { | |
5997 | include_dir_count++; | |
5998 | include_dirs = XRESIZEVEC (const char *, include_dirs, include_dir_count); | |
041ff4dd | 5999 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 | 6000 | |
adb9ac5f | 6001 | size_t i = strlen (path); |
252b5132 RH |
6002 | if (i > include_dir_maxlen) |
6003 | include_dir_maxlen = i; | |
041ff4dd | 6004 | } |
252b5132 RH |
6005 | \f |
6006 | /* Output debugging information to denote the source file. */ | |
6007 | ||
6008 | static void | |
39e6acbd | 6009 | generate_file_debug (void) |
252b5132 RH |
6010 | { |
6011 | if (debug_type == DEBUG_STABS) | |
6012 | stabs_generate_asm_file (); | |
6013 | } | |
6014 | ||
6015 | /* Output line number debugging information for the current source line. */ | |
6016 | ||
6017 | void | |
39e6acbd | 6018 | generate_lineno_debug (void) |
252b5132 | 6019 | { |
252b5132 RH |
6020 | switch (debug_type) |
6021 | { | |
6022 | case DEBUG_UNSPECIFIED: | |
6023 | case DEBUG_NONE: | |
4dc7ead9 | 6024 | case DEBUG_DWARF: |
252b5132 RH |
6025 | break; |
6026 | case DEBUG_STABS: | |
6027 | stabs_generate_asm_lineno (); | |
6028 | break; | |
6029 | case DEBUG_ECOFF: | |
6030 | ecoff_generate_asm_lineno (); | |
6031 | break; | |
252b5132 | 6032 | case DEBUG_DWARF2: |
4dc7ead9 RH |
6033 | /* ??? We could here indicate to dwarf2dbg.c that something |
6034 | has changed. However, since there is additional backend | |
6035 | support that is required (calling dwarf2_emit_insn), we | |
6036 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 | 6037 | break; |
ba646820 MH |
6038 | case DEBUG_CODEVIEW: |
6039 | codeview_generate_asm_lineno (); | |
6040 | break; | |
252b5132 RH |
6041 | } |
6042 | } | |
6043 | ||
6044 | /* Output debugging information to mark a function entry point or end point. | |
6045 | END_P is zero for .func, and non-zero for .endfunc. */ | |
6046 | ||
6047 | void | |
39e6acbd | 6048 | s_func (int end_p) |
252b5132 RH |
6049 | { |
6050 | do_s_func (end_p, NULL); | |
6051 | } | |
6052 | ||
6053 | /* Subroutine of s_func so targets can choose a different default prefix. | |
6054 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
6055 | ||
87c245cc | 6056 | static void |
39e6acbd | 6057 | do_s_func (int end_p, const char *default_prefix) |
252b5132 | 6058 | { |
252b5132 RH |
6059 | if (end_p) |
6060 | { | |
6061 | if (current_name == NULL) | |
6062 | { | |
6063 | as_bad (_("missing .func")); | |
6064 | ignore_rest_of_line (); | |
6065 | return; | |
6066 | } | |
6067 | ||
6068 | if (debug_type == DEBUG_STABS) | |
6069 | stabs_generate_asm_endfunc (current_name, current_label); | |
6070 | ||
6f860418 AM |
6071 | free (current_name); |
6072 | free (current_label); | |
252b5132 RH |
6073 | current_name = current_label = NULL; |
6074 | } | |
6075 | else /* ! end_p */ | |
6076 | { | |
041ff4dd NC |
6077 | char *name, *label; |
6078 | char delim1, delim2; | |
252b5132 RH |
6079 | |
6080 | if (current_name != NULL) | |
6081 | { | |
6082 | as_bad (_(".endfunc missing for previous .func")); | |
6083 | ignore_rest_of_line (); | |
6084 | return; | |
6085 | } | |
6086 | ||
d02603dc | 6087 | delim1 = get_symbol_name (& name); |
252b5132 RH |
6088 | name = xstrdup (name); |
6089 | *input_line_pointer = delim1; | |
d02603dc | 6090 | SKIP_WHITESPACE_AFTER_NAME (); |
252b5132 RH |
6091 | if (*input_line_pointer != ',') |
6092 | { | |
6093 | if (default_prefix) | |
05f4ab67 AM |
6094 | { |
6095 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
6096 | as_fatal ("%s", xstrerror (errno)); | |
6097 | } | |
252b5132 RH |
6098 | else |
6099 | { | |
7be1c489 | 6100 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
6101 | /* Missing entry point, use function's name with the leading |
6102 | char prepended. */ | |
6103 | if (leading_char) | |
05f4ab67 AM |
6104 | { |
6105 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
6106 | as_fatal ("%s", xstrerror (errno)); | |
6107 | } | |
252b5132 | 6108 | else |
6f860418 | 6109 | label = xstrdup (name); |
252b5132 RH |
6110 | } |
6111 | } | |
6112 | else | |
6113 | { | |
6114 | ++input_line_pointer; | |
6115 | SKIP_WHITESPACE (); | |
d02603dc | 6116 | delim2 = get_symbol_name (& label); |
252b5132 | 6117 | label = xstrdup (label); |
d02603dc | 6118 | restore_line_pointer (delim2); |
252b5132 RH |
6119 | } |
6120 | ||
6121 | if (debug_type == DEBUG_STABS) | |
6122 | stabs_generate_asm_func (name, label); | |
6123 | ||
6124 | current_name = name; | |
6125 | current_label = label; | |
6126 | } | |
6127 | ||
6128 | demand_empty_rest_of_line (); | |
6129 | } | |
6130 | \f | |
fa94de6b RM |
6131 | #ifdef HANDLE_BUNDLE |
6132 | ||
6133 | void | |
6134 | s_bundle_align_mode (int arg ATTRIBUTE_UNUSED) | |
6135 | { | |
6136 | unsigned int align = get_absolute_expression (); | |
6137 | SKIP_WHITESPACE (); | |
6138 | demand_empty_rest_of_line (); | |
6139 | ||
6140 | if (align > (unsigned int) TC_ALIGN_LIMIT) | |
6141 | as_fatal (_(".bundle_align_mode alignment too large (maximum %u)"), | |
6142 | (unsigned int) TC_ALIGN_LIMIT); | |
6143 | ||
6144 | if (bundle_lock_frag != NULL) | |
6145 | { | |
6146 | as_bad (_("cannot change .bundle_align_mode inside .bundle_lock")); | |
6147 | return; | |
6148 | } | |
6149 | ||
6150 | bundle_align_p2 = align; | |
6151 | } | |
6152 | ||
6153 | void | |
6154 | s_bundle_lock (int arg ATTRIBUTE_UNUSED) | |
6155 | { | |
6156 | demand_empty_rest_of_line (); | |
6157 | ||
6158 | if (bundle_align_p2 == 0) | |
6159 | { | |
6160 | as_bad (_(".bundle_lock is meaningless without .bundle_align_mode")); | |
6161 | return; | |
6162 | } | |
6163 | ||
d416e51d | 6164 | if (bundle_lock_depth == 0) |
fa94de6b | 6165 | { |
d416e51d RM |
6166 | bundle_lock_frchain = frchain_now; |
6167 | bundle_lock_frag = start_bundle (); | |
fa94de6b | 6168 | } |
d416e51d | 6169 | ++bundle_lock_depth; |
fa94de6b RM |
6170 | } |
6171 | ||
6172 | void | |
6173 | s_bundle_unlock (int arg ATTRIBUTE_UNUSED) | |
6174 | { | |
6175 | unsigned int size; | |
6176 | ||
6177 | demand_empty_rest_of_line (); | |
6178 | ||
6179 | if (bundle_lock_frag == NULL) | |
6180 | { | |
6181 | as_bad (_(".bundle_unlock without preceding .bundle_lock")); | |
6182 | return; | |
6183 | } | |
6184 | ||
6185 | gas_assert (bundle_align_p2 > 0); | |
6186 | ||
d416e51d RM |
6187 | gas_assert (bundle_lock_depth > 0); |
6188 | if (--bundle_lock_depth > 0) | |
6189 | return; | |
6190 | ||
fa94de6b RM |
6191 | size = pending_bundle_size (bundle_lock_frag); |
6192 | ||
e54e9ac5 AM |
6193 | if (size > 1U << bundle_align_p2) |
6194 | as_bad (_(".bundle_lock sequence is %u bytes, " | |
6195 | "but bundle size is only %u bytes"), | |
6196 | size, 1u << bundle_align_p2); | |
fa94de6b RM |
6197 | else |
6198 | finish_bundle (bundle_lock_frag, size); | |
6199 | ||
6200 | bundle_lock_frag = NULL; | |
6201 | bundle_lock_frchain = NULL; | |
6202 | } | |
6203 | ||
6204 | #endif /* HANDLE_BUNDLE */ | |
6205 | \f | |
041ff4dd | 6206 | void |
39e6acbd | 6207 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 6208 | { |
40a4d956 | 6209 | ignore_rest_of_line (); |
252b5132 RH |
6210 | } |
6211 | ||
252b5132 | 6212 | void |
39e6acbd | 6213 | read_print_statistics (FILE *file) |
252b5132 | 6214 | { |
32e4c1c2 | 6215 | htab_print_statistics (file, "pseudo-op table", po_hash); |
252b5132 RH |
6216 | } |
6217 | ||
041ff4dd NC |
6218 | /* Inserts the given line into the input stream. |
6219 | ||
9f10757c TW |
6220 | This call avoids macro/conditionals nesting checking, since the contents of |
6221 | the line are assumed to replace the contents of a line already scanned. | |
6222 | ||
47eebc20 | 6223 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
6224 | called by md_start_line_hook(). The given line is assumed to already be |
6225 | properly scrubbed. */ | |
6226 | ||
6227 | void | |
39e6acbd | 6228 | input_scrub_insert_line (const char *line) |
9f10757c TW |
6229 | { |
6230 | sb newline; | |
d2ae702c L |
6231 | size_t len = strlen (line); |
6232 | sb_build (&newline, len); | |
6233 | sb_add_buffer (&newline, line, len); | |
657edeab | 6234 | input_scrub_include_sb (&newline, input_line_pointer, expanding_none); |
9f10757c TW |
6235 | sb_kill (&newline); |
6236 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6237 | } | |
6238 | ||
6239 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 6240 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
6241 | |
6242 | void | |
39e6acbd | 6243 | input_scrub_insert_file (char *path) |
9f10757c TW |
6244 | { |
6245 | input_scrub_include_file (path, input_line_pointer); | |
6246 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6247 | } | |
40a4d956 JB |
6248 | |
6249 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
6250 | ||
6251 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
6252 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
6253 | #endif | |
6254 | ||
6255 | static char * | |
7592cfd7 NC |
6256 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
6257 | int in_macro) | |
40a4d956 JB |
6258 | { |
6259 | char inquote = '\0'; | |
6260 | int inescape = 0; | |
6261 | ||
6262 | while (!is_end_of_line[(unsigned char) *s] | |
6263 | || (inquote && !ISCNTRL (*s)) | |
6264 | || (inquote == '\'' && flag_mri) | |
6265 | #ifdef TC_EOL_IN_INSN | |
6266 | || (insn && TC_EOL_IN_INSN (s)) | |
6267 | #endif | |
7592cfd7 NC |
6268 | /* PR 6926: When we are parsing the body of a macro the sequence |
6269 | \@ is special - it refers to the invocation count. If the @ | |
6270 | character happens to be registered as a line-separator character | |
6271 | by the target, then the is_end_of_line[] test above will have | |
6272 | returned true, but we need to ignore the line separating | |
6273 | semantics in this particular case. */ | |
6274 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
6275 | ) |
6276 | { | |
6277 | if (mri_string && *s == '\'') | |
6278 | inquote ^= *s; | |
6279 | else if (inescape) | |
6280 | inescape = 0; | |
6281 | else if (*s == '\\') | |
6282 | inescape = 1; | |
6283 | else if (!inquote | |
6284 | ? *s == '"' | |
6285 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
6286 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
6287 | #endif | |
6288 | : *s == inquote) | |
6289 | inquote ^= *s; | |
6290 | ++s; | |
6291 | } | |
6292 | if (inquote) | |
6293 | as_warn (_("missing closing `%c'"), inquote); | |
e74211b6 | 6294 | if (inescape && !ignore_input ()) |
40a4d956 JB |
6295 | as_warn (_("stray `\\'")); |
6296 | return s; | |
6297 | } | |
6298 | ||
6299 | char * | |
6300 | find_end_of_line (char *s, int mri_string) | |
6301 | { | |
7592cfd7 | 6302 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 6303 | } |
1181551e | 6304 | |
f049c189 | 6305 | static char *saved_ilp; |
1181551e NC |
6306 | static char *saved_limit; |
6307 | ||
6308 | /* Use BUF as a temporary input pointer for calling other functions in this | |
6309 | file. BUF must be a C string, so that its end can be found by strlen. | |
6310 | Also sets the buffer_limit variable (local to this file) so that buffer | |
6311 | overruns should not occur. Saves the current input line pointer so that | |
6312 | it can be restored by calling restore_ilp(). | |
6313 | ||
af60449c | 6314 | Does not support recursion. */ |
1181551e NC |
6315 | |
6316 | void | |
6317 | temp_ilp (char *buf) | |
6318 | { | |
6319 | gas_assert (saved_ilp == NULL); | |
6320 | gas_assert (buf != NULL); | |
6321 | ||
6322 | saved_ilp = input_line_pointer; | |
6323 | saved_limit = buffer_limit; | |
6324 | /* Prevent the assert in restore_ilp from triggering if | |
6325 | the input_line_pointer has not yet been initialised. */ | |
6326 | if (saved_ilp == NULL) | |
6327 | saved_limit = saved_ilp = (char *) ""; | |
6328 | ||
6329 | input_line_pointer = buf; | |
6330 | buffer_limit = buf + strlen (buf); | |
5b7c81bd | 6331 | input_from_string = true; |
1181551e NC |
6332 | } |
6333 | ||
6334 | /* Restore a saved input line pointer. */ | |
6335 | ||
6336 | void | |
6337 | restore_ilp (void) | |
6338 | { | |
6339 | gas_assert (saved_ilp != NULL); | |
6340 | ||
6341 | input_line_pointer = saved_ilp; | |
6342 | buffer_limit = saved_limit; | |
5b7c81bd | 6343 | input_from_string = false; |
1181551e NC |
6344 | |
6345 | saved_ilp = NULL; | |
6346 | } |