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Commit | Line | Data |
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252b5132 | 1 | /* read.c - read a source file - |
f7e42eb4 | 2 | Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
e5604d79 RS |
3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
4 | Free Software Foundation, Inc. | |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
f0e652b4 | 21 | 02111-1307, USA. */ |
252b5132 | 22 | |
59c871b4 | 23 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
041ff4dd NC |
24 | But then, GNU isn't spozed to run on your machine anyway. |
25 | (RMS is so shortsighted sometimes.) */ | |
041ff4dd | 26 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 27 | |
252b5132 | 28 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 29 | grow when we do 4361 style flonums. */ |
252b5132 RH |
30 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
31 | ||
47eebc20 | 32 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
33 | Another group of these functions is in the expr.c module. */ |
34 | ||
252b5132 | 35 | #include "as.h" |
3882b010 | 36 | #include "safe-ctype.h" |
252b5132 RH |
37 | #include "subsegs.h" |
38 | #include "sb.h" | |
39 | #include "macro.h" | |
40 | #include "obstack.h" | |
41 | #include "listing.h" | |
42 | #include "ecoff.h" | |
54cfded0 | 43 | #include "dw2gencfi.h" |
252b5132 RH |
44 | |
45 | #ifndef TC_START_LABEL | |
d1a6c242 | 46 | #define TC_START_LABEL(x,y) (x == ':') |
252b5132 RH |
47 | #endif |
48 | ||
8684e216 HPN |
49 | /* Set by the object-format or the target. */ |
50 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 51 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 52 | do \ |
d6415f6c AM |
53 | { \ |
54 | if ((SIZE) >= 8) \ | |
55 | (P2VAR) = 3; \ | |
56 | else if ((SIZE) >= 4) \ | |
57 | (P2VAR) = 2; \ | |
58 | else if ((SIZE) >= 2) \ | |
59 | (P2VAR) = 1; \ | |
60 | else \ | |
61 | (P2VAR) = 0; \ | |
041ff4dd NC |
62 | } \ |
63 | while (0) | |
8684e216 HPN |
64 | #endif |
65 | ||
041ff4dd | 66 | char *input_line_pointer; /*->next char of source file to parse. */ |
252b5132 RH |
67 | |
68 | #if BITS_PER_CHAR != 8 | |
69 | /* The following table is indexed by[(char)] and will break if | |
70 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
71 | die horribly; | |
72 | #endif | |
73 | ||
74 | #ifndef LEX_AT | |
75 | /* The m88k unfortunately uses @ as a label beginner. */ | |
76 | #define LEX_AT 0 | |
77 | #endif | |
78 | ||
79 | #ifndef LEX_BR | |
80 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
81 | #define LEX_BR 0 | |
82 | #endif | |
83 | ||
84 | #ifndef LEX_PCT | |
85 | /* The Delta 68k assembler permits % inside label names. */ | |
86 | #define LEX_PCT 0 | |
87 | #endif | |
88 | ||
89 | #ifndef LEX_QM | |
90 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
91 | #define LEX_QM 0 | |
92 | #endif | |
93 | ||
58b5739a | 94 | #ifndef LEX_HASH |
800eeca4 JW |
95 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
96 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
97 | #define LEX_HASH 0 |
98 | #endif | |
99 | ||
252b5132 RH |
100 | #ifndef LEX_DOLLAR |
101 | /* The a29k assembler does not permits labels to start with $. */ | |
102 | #define LEX_DOLLAR 3 | |
103 | #endif | |
104 | ||
105 | #ifndef LEX_TILDE | |
106 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
107 | #define LEX_TILDE 0 | |
108 | #endif | |
109 | ||
041ff4dd | 110 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 111 | char lex_type[256] = { |
252b5132 RH |
112 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
113 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 114 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
115 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
116 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
117 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
118 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
124 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
125 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
126 | 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 | }; | |
129 | ||
041ff4dd NC |
130 | /* In: a character. |
131 | Out: 1 if this character ends a line. */ | |
ef99799a | 132 | char is_end_of_line[256] = { |
252b5132 | 133 | #ifdef CR_EOL |
b75c0c92 | 134 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 135 | #else |
b75c0c92 | 136 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 137 | #endif |
b75c0c92 AM |
138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
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 /* */ | |
252b5132 | 153 | }; |
252b5132 | 154 | |
a8a3b3b2 | 155 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
156 | char original_case_string[128]; |
157 | #endif | |
158 | ||
041ff4dd | 159 | /* Functions private to this file. */ |
252b5132 | 160 | |
041ff4dd NC |
161 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
162 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 163 | |
041ff4dd NC |
164 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
165 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
166 | internals manual. */ | |
252b5132 RH |
167 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
168 | ||
041ff4dd | 169 | /* Variables for handling include file directory table. */ |
252b5132 | 170 | |
041ff4dd NC |
171 | /* Table of pointers to directories to search for .include's. */ |
172 | char **include_dirs; | |
173 | ||
174 | /* How many are in the table. */ | |
175 | int include_dir_count; | |
176 | ||
177 | /* Length of longest in table. */ | |
178 | int include_dir_maxlen = 1; | |
252b5132 RH |
179 | |
180 | #ifndef WORKING_DOT_WORD | |
181 | struct broken_word *broken_words; | |
182 | int new_broken_words; | |
183 | #endif | |
184 | ||
185 | /* The current offset into the absolute section. We don't try to | |
186 | build frags in the absolute section, since no data can be stored | |
187 | there. We just keep track of the current offset. */ | |
188 | addressT abs_section_offset; | |
189 | ||
190 | /* If this line had an MRI style label, it is stored in this variable. | |
191 | This is used by some of the MRI pseudo-ops. */ | |
192 | symbolS *line_label; | |
193 | ||
194 | /* This global variable is used to support MRI common sections. We | |
195 | translate such sections into a common symbol. This variable is | |
196 | non-NULL when we are in an MRI common section. */ | |
197 | symbolS *mri_common_symbol; | |
198 | ||
199 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
200 | need to align to an even byte boundary unless the next pseudo-op is | |
201 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
202 | may be needed. */ | |
203 | static int mri_pending_align; | |
204 | ||
205 | #ifndef NO_LISTING | |
206 | #ifdef OBJ_ELF | |
207 | /* This variable is set to be non-zero if the next string we see might | |
208 | be the name of the source file in DWARF debugging information. See | |
209 | the comment in emit_expr for the format we look for. */ | |
210 | static int dwarf_file_string; | |
211 | #endif | |
212 | #endif | |
213 | ||
39e6acbd KH |
214 | static void do_align (int, char *, int, int); |
215 | static void s_align (int, int); | |
caa32fe5 | 216 | static void s_altmacro (int); |
057f53c1 | 217 | static void s_bad_end (int); |
39e6acbd | 218 | static int hex_float (int, char *); |
39e6acbd KH |
219 | static segT get_known_segmented_expression (expressionS * expP); |
220 | static void pobegin (void); | |
221 | static int get_line_sb (sb *); | |
222 | static void generate_file_debug (void); | |
252b5132 | 223 | \f |
252b5132 | 224 | void |
39e6acbd | 225 | read_begin (void) |
252b5132 RH |
226 | { |
227 | const char *p; | |
228 | ||
229 | pobegin (); | |
230 | obj_read_begin_hook (); | |
231 | ||
232 | /* Something close -- but not too close -- to a multiple of 1024. | |
233 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
234 | obstack_begin (¬es, chunksize); | |
235 | obstack_begin (&cond_obstack, chunksize); | |
236 | ||
041ff4dd | 237 | /* Use machine dependent syntax. */ |
252b5132 RH |
238 | for (p = line_separator_chars; *p; p++) |
239 | is_end_of_line[(unsigned char) *p] = 1; | |
041ff4dd | 240 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
241 | |
242 | if (flag_mri) | |
243 | lex_type['?'] = 3; | |
244 | } | |
245 | \f | |
cc1bc22a AM |
246 | #ifndef TC_ADDRESS_BYTES |
247 | #ifdef BFD_ASSEMBLER | |
248 | #define TC_ADDRESS_BYTES address_bytes | |
249 | ||
250 | static inline int | |
251 | address_bytes (void) | |
252 | { | |
253 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
254 | contain an address. */ | |
255 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
256 | n |= n >> 1; | |
257 | n |= n >> 2; | |
258 | n += 1; | |
259 | return n; | |
260 | } | |
261 | #endif | |
262 | #endif | |
263 | ||
041ff4dd | 264 | /* Set up pseudo-op tables. */ |
252b5132 RH |
265 | |
266 | static struct hash_control *po_hash; | |
267 | ||
ef99799a | 268 | static const pseudo_typeS potable[] = { |
252b5132 RH |
269 | {"abort", s_abort, 0}, |
270 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 271 | {"altmacro", s_altmacro, 1}, |
252b5132 RH |
272 | {"ascii", stringer, 0}, |
273 | {"asciz", stringer, 1}, | |
274 | {"balign", s_align_bytes, 0}, | |
275 | {"balignw", s_align_bytes, -2}, | |
276 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 277 | /* block */ |
252b5132 RH |
278 | {"byte", cons, 1}, |
279 | {"comm", s_comm, 0}, | |
280 | {"common", s_mri_common, 0}, | |
281 | {"common.s", s_mri_common, 1}, | |
282 | {"data", s_data, 0}, | |
283 | {"dc", cons, 2}, | |
cc1bc22a AM |
284 | #ifdef TC_ADDRESS_BYTES |
285 | {"dc.a", cons, 0}, | |
286 | #endif | |
252b5132 RH |
287 | {"dc.b", cons, 1}, |
288 | {"dc.d", float_cons, 'd'}, | |
289 | {"dc.l", cons, 4}, | |
290 | {"dc.s", float_cons, 'f'}, | |
291 | {"dc.w", cons, 2}, | |
292 | {"dc.x", float_cons, 'x'}, | |
293 | {"dcb", s_space, 2}, | |
294 | {"dcb.b", s_space, 1}, | |
295 | {"dcb.d", s_float_space, 'd'}, | |
296 | {"dcb.l", s_space, 4}, | |
297 | {"dcb.s", s_float_space, 'f'}, | |
298 | {"dcb.w", s_space, 2}, | |
299 | {"dcb.x", s_float_space, 'x'}, | |
300 | {"ds", s_space, 2}, | |
301 | {"ds.b", s_space, 1}, | |
302 | {"ds.d", s_space, 8}, | |
303 | {"ds.l", s_space, 4}, | |
304 | {"ds.p", s_space, 12}, | |
305 | {"ds.s", s_space, 4}, | |
306 | {"ds.w", s_space, 2}, | |
307 | {"ds.x", s_space, 12}, | |
308 | {"debug", s_ignore, 0}, | |
309 | #ifdef S_SET_DESC | |
310 | {"desc", s_desc, 0}, | |
311 | #endif | |
041ff4dd | 312 | /* dim */ |
252b5132 | 313 | {"double", float_cons, 'd'}, |
041ff4dd NC |
314 | /* dsect */ |
315 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
316 | {"else", s_else, 0}, |
317 | {"elsec", s_else, 0}, | |
3fd9f047 | 318 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
319 | {"end", s_end, 0}, |
320 | {"endc", s_endif, 0}, | |
321 | {"endfunc", s_func, 1}, | |
322 | {"endif", s_endif, 0}, | |
057f53c1 JB |
323 | {"endm", s_bad_end, 0}, |
324 | {"endr", s_bad_end, 1}, | |
041ff4dd | 325 | /* endef */ |
252b5132 RH |
326 | {"equ", s_set, 0}, |
327 | {"equiv", s_set, 1}, | |
328 | {"err", s_err, 0}, | |
d190d046 | 329 | {"error", s_errwarn, 1}, |
252b5132 | 330 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
331 | /* extend */ |
332 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 RH |
333 | {"appfile", s_app_file, 1}, |
334 | {"appline", s_app_line, 0}, | |
335 | {"fail", s_fail, 0}, | |
336 | {"file", s_app_file, 0}, | |
337 | {"fill", s_fill, 0}, | |
338 | {"float", float_cons, 'f'}, | |
339 | {"format", s_ignore, 0}, | |
340 | {"func", s_func, 0}, | |
341 | {"global", s_globl, 0}, | |
342 | {"globl", s_globl, 0}, | |
343 | {"hword", cons, 2}, | |
344 | {"if", s_if, (int) O_ne}, | |
345 | {"ifc", s_ifc, 0}, | |
346 | {"ifdef", s_ifdef, 0}, | |
347 | {"ifeq", s_if, (int) O_eq}, | |
348 | {"ifeqs", s_ifeqs, 0}, | |
349 | {"ifge", s_if, (int) O_ge}, | |
350 | {"ifgt", s_if, (int) O_gt}, | |
351 | {"ifle", s_if, (int) O_le}, | |
352 | {"iflt", s_if, (int) O_lt}, | |
353 | {"ifnc", s_ifc, 1}, | |
354 | {"ifndef", s_ifdef, 1}, | |
355 | {"ifne", s_if, (int) O_ne}, | |
356 | {"ifnes", s_ifeqs, 1}, | |
357 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 358 | {"incbin", s_incbin, 0}, |
252b5132 RH |
359 | {"include", s_include, 0}, |
360 | {"int", cons, 4}, | |
361 | {"irp", s_irp, 0}, | |
362 | {"irep", s_irp, 0}, | |
363 | {"irpc", s_irp, 1}, | |
364 | {"irepc", s_irp, 1}, | |
365 | {"lcomm", s_lcomm, 0}, | |
041ff4dd | 366 | {"lflags", listing_flags, 0}, /* Listing flags. */ |
252b5132 | 367 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 368 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
369 | {"llen", listing_psize, 1}, |
370 | {"long", cons, 4}, | |
371 | {"lsym", s_lsym, 0}, | |
372 | {"macro", s_macro, 0}, | |
373 | {"mexit", s_mexit, 0}, | |
374 | {"mri", s_mri, 0}, | |
375 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
376 | {"name", s_ignore, 0}, | |
caa32fe5 | 377 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 378 | {"noformat", s_ignore, 0}, |
041ff4dd | 379 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
380 | {"nopage", listing_nopage, 0}, |
381 | {"octa", cons, 16}, | |
382 | {"offset", s_struct, 0}, | |
383 | {"org", s_org, 0}, | |
384 | {"p2align", s_align_ptwo, 0}, | |
385 | {"p2alignw", s_align_ptwo, -2}, | |
386 | {"p2alignl", s_align_ptwo, -4}, | |
387 | {"page", listing_eject, 0}, | |
388 | {"plen", listing_psize, 0}, | |
389 | {"print", s_print, 0}, | |
041ff4dd | 390 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
391 | {"purgem", s_purgem, 0}, |
392 | {"quad", cons, 8}, | |
393 | {"rep", s_rept, 0}, | |
394 | {"rept", s_rept, 0}, | |
395 | {"rva", s_rva, 4}, | |
041ff4dd NC |
396 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
397 | /* scl */ | |
398 | /* sect */ | |
252b5132 RH |
399 | {"set", s_set, 0}, |
400 | {"short", cons, 2}, | |
401 | {"single", float_cons, 'f'}, | |
041ff4dd | 402 | /* size */ |
252b5132 RH |
403 | {"space", s_space, 0}, |
404 | {"skip", s_space, 0}, | |
405 | {"sleb128", s_leb128, 1}, | |
406 | {"spc", s_ignore, 0}, | |
407 | {"stabd", s_stab, 'd'}, | |
408 | {"stabn", s_stab, 'n'}, | |
409 | {"stabs", s_stab, 's'}, | |
410 | {"string", stringer, 1}, | |
411 | {"struct", s_struct, 0}, | |
041ff4dd | 412 | /* tag */ |
252b5132 RH |
413 | {"text", s_text, 0}, |
414 | ||
415 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
416 | won't be able to use it for a while -- probably a year or more. | |
417 | But once this has been released, check with gcc maintainers | |
418 | before deleting it or even changing the spelling. */ | |
419 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
420 | /* If we're folding case -- done for some targets, not necessarily | |
421 | all -- the above string in an input file will be converted to | |
422 | this one. Match it either way... */ | |
423 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
424 | ||
041ff4dd | 425 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 426 | {"ttl", listing_title, 0}, |
041ff4dd | 427 | /* type */ |
252b5132 | 428 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
429 | /* use */ |
430 | /* val */ | |
252b5132 RH |
431 | {"xcom", s_comm, 0}, |
432 | {"xdef", s_globl, 0}, | |
433 | {"xref", s_ignore, 0}, | |
434 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 435 | {"warning", s_errwarn, 0}, |
252b5132 RH |
436 | {"word", cons, 2}, |
437 | {"zero", s_space, 0}, | |
041ff4dd | 438 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
439 | }; |
440 | ||
441 | static int pop_override_ok = 0; | |
442 | static const char *pop_table_name; | |
443 | ||
444 | void | |
39e6acbd | 445 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
446 | { |
447 | const char *errtxt; | |
448 | const pseudo_typeS *pop; | |
449 | for (pop = table; pop->poc_name; pop++) | |
450 | { | |
451 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
452 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
453 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
454 | errtxt); | |
455 | } | |
456 | } | |
457 | ||
458 | #ifndef md_pop_insert | |
459 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
460 | #endif | |
461 | ||
462 | #ifndef obj_pop_insert | |
463 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
464 | #endif | |
465 | ||
54cfded0 AM |
466 | #ifndef cfi_pop_insert |
467 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
468 | #endif | |
469 | ||
041ff4dd | 470 | static void |
39e6acbd | 471 | pobegin (void) |
252b5132 RH |
472 | { |
473 | po_hash = hash_new (); | |
474 | ||
041ff4dd | 475 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
476 | pop_table_name = "md"; |
477 | md_pop_insert (); | |
478 | ||
041ff4dd | 479 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
480 | pop_table_name = "obj"; |
481 | pop_override_ok = 1; | |
482 | obj_pop_insert (); | |
483 | ||
041ff4dd | 484 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
485 | pop_table_name = "standard"; |
486 | pop_insert (potable); | |
d6415f6c | 487 | |
54cfded0 AM |
488 | #ifdef TARGET_USE_CFIPOP |
489 | pop_table_name = "cfi"; | |
490 | pop_override_ok = 1; | |
491 | cfi_pop_insert (); | |
492 | #endif | |
252b5132 RH |
493 | } |
494 | \f | |
495 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
496 | if (ignore_input ()) \ | |
497 | { \ | |
041ff4dd | 498 | while (!is_end_of_line[(unsigned char) *input_line_pointer++]) \ |
252b5132 RH |
499 | if (input_line_pointer == buffer_limit) \ |
500 | break; \ | |
501 | continue; \ | |
502 | } | |
503 | ||
252b5132 RH |
504 | /* This function is used when scrubbing the characters between #APP |
505 | and #NO_APP. */ | |
506 | ||
507 | static char *scrub_string; | |
508 | static char *scrub_string_end; | |
509 | ||
510 | static int | |
39e6acbd | 511 | scrub_from_string (char *buf, int buflen) |
252b5132 | 512 | { |
2b47531b ILT |
513 | int copy; |
514 | ||
515 | copy = scrub_string_end - scrub_string; | |
516 | if (copy > buflen) | |
517 | copy = buflen; | |
518 | memcpy (buf, scrub_string, copy); | |
519 | scrub_string += copy; | |
520 | return copy; | |
252b5132 RH |
521 | } |
522 | ||
041ff4dd NC |
523 | /* We read the file, putting things into a web that represents what we |
524 | have been reading. */ | |
525 | void | |
39e6acbd | 526 | read_a_source_file (char *name) |
252b5132 RH |
527 | { |
528 | register char c; | |
041ff4dd | 529 | register char *s; /* String of symbol, '\0' appended. */ |
252b5132 RH |
530 | register int temp; |
531 | pseudo_typeS *pop; | |
532 | ||
4c400d5e AM |
533 | #ifdef WARN_COMMENTS |
534 | found_comment = 0; | |
535 | #endif | |
536 | ||
252b5132 RH |
537 | buffer = input_scrub_new_file (name); |
538 | ||
539 | listing_file (name); | |
540 | listing_newline (NULL); | |
541 | register_dependency (name); | |
542 | ||
543 | /* Generate debugging information before we've read anything in to denote | |
544 | this file as the "main" source file and not a subordinate one | |
545 | (e.g. N_SO vs N_SOL in stabs). */ | |
546 | generate_file_debug (); | |
547 | ||
548 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd NC |
549 | { /* We have another line to parse. */ |
550 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
64e55042 | 551 | |
252b5132 RH |
552 | while (input_line_pointer < buffer_limit) |
553 | { | |
041ff4dd | 554 | /* We have more of this buffer to parse. */ |
252b5132 | 555 | |
041ff4dd NC |
556 | /* We now have input_line_pointer->1st char of next line. |
557 | If input_line_pointer [-1] == '\n' then we just | |
558 | scanned another line: so bump line counters. */ | |
252b5132 RH |
559 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
560 | { | |
561 | #ifdef md_start_line_hook | |
562 | md_start_line_hook (); | |
563 | #endif | |
252b5132 RH |
564 | if (input_line_pointer[-1] == '\n') |
565 | bump_line_counters (); | |
566 | ||
567 | line_label = NULL; | |
568 | ||
abd63a32 | 569 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
570 | { |
571 | /* Text at the start of a line must be a label, we | |
572 | run down and stick a colon in. */ | |
573 | if (is_name_beginner (*input_line_pointer)) | |
574 | { | |
575 | char *line_start = input_line_pointer; | |
576 | char c; | |
577 | int mri_line_macro; | |
578 | ||
579 | LISTING_NEWLINE (); | |
580 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
581 | ||
582 | c = get_symbol_end (); | |
583 | ||
584 | /* In MRI mode, the EQU and MACRO pseudoops must | |
585 | be handled specially. */ | |
586 | mri_line_macro = 0; | |
587 | if (flag_m68k_mri) | |
588 | { | |
589 | char *rest = input_line_pointer + 1; | |
590 | ||
591 | if (*rest == ':') | |
592 | ++rest; | |
593 | if (*rest == ' ' || *rest == '\t') | |
594 | ++rest; | |
595 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
596 | || strncasecmp (rest, "SET", 3) == 0) | |
597 | && (rest[3] == ' ' || rest[3] == '\t')) | |
598 | { | |
599 | input_line_pointer = rest + 3; | |
600 | equals (line_start, | |
601 | strncasecmp (rest, "SET", 3) == 0); | |
602 | continue; | |
603 | } | |
604 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
605 | && (rest[5] == ' ' | |
606 | || rest[5] == '\t' | |
607 | || is_end_of_line[(unsigned char) rest[5]])) | |
608 | mri_line_macro = 1; | |
609 | } | |
610 | ||
611 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
612 | pseudo-op specially: we don't want to put the |
613 | symbol in the symbol table. */ | |
041ff4dd | 614 | if (!mri_line_macro |
a25c045a | 615 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
616 | && TC_START_LABEL_WITHOUT_COLON(c, |
617 | input_line_pointer) | |
a25c045a | 618 | #endif |
ef99799a | 619 | ) |
252b5132 RH |
620 | line_label = colon (line_start); |
621 | else | |
622 | line_label = symbol_create (line_start, | |
623 | absolute_section, | |
624 | (valueT) 0, | |
625 | &zero_address_frag); | |
626 | ||
627 | *input_line_pointer = c; | |
628 | if (c == ':') | |
629 | input_line_pointer++; | |
630 | } | |
631 | } | |
632 | } | |
633 | ||
47eebc20 | 634 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
635 | We expect a well-formed assembler statement. |
636 | A "symbol-name:" is a statement. | |
f0e652b4 | 637 | |
041ff4dd NC |
638 | Depending on what compiler is used, the order of these tests |
639 | may vary to catch most common case 1st. | |
640 | Each test is independent of all other tests at the (top) level. | |
641 | PLEASE make a compiler that doesn't use this assembler. | |
642 | It is crufty to waste a compiler's time encoding things for this | |
643 | assembler, which then wastes more time decoding it. | |
644 | (And communicating via (linear) files is silly! | |
645 | If you must pass stuff, please pass a tree!) */ | |
252b5132 RH |
646 | if ((c = *input_line_pointer++) == '\t' |
647 | || c == ' ' | |
648 | || c == '\f' | |
649 | || c == 0) | |
041ff4dd NC |
650 | c = *input_line_pointer++; |
651 | ||
652 | know (c != ' '); /* No further leading whitespace. */ | |
252b5132 RH |
653 | |
654 | #ifndef NO_LISTING | |
655 | /* If listing is on, and we are expanding a macro, then give | |
656 | the listing code the contents of the expanded line. */ | |
657 | if (listing) | |
658 | { | |
659 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
660 | { | |
661 | char *copy; | |
662 | int len; | |
663 | ||
664 | /* Find the end of the current expanded macro line. */ | |
ef99799a | 665 | for (s = input_line_pointer - 1; *s; ++s) |
252b5132 RH |
666 | if (is_end_of_line[(unsigned char) *s]) |
667 | break; | |
668 | ||
669 | /* Copy it for safe keeping. Also give an indication of | |
670 | how much macro nesting is involved at this point. */ | |
ef99799a | 671 | len = s - (input_line_pointer - 1); |
252b5132 RH |
672 | copy = (char *) xmalloc (len + macro_nest + 2); |
673 | memset (copy, '>', macro_nest); | |
674 | copy[macro_nest] = ' '; | |
041ff4dd NC |
675 | memcpy (copy + macro_nest + 1, input_line_pointer - 1, len); |
676 | copy[macro_nest + 1 + len] = '\0'; | |
252b5132 RH |
677 | |
678 | /* Install the line with the listing facility. */ | |
679 | listing_newline (copy); | |
680 | } | |
681 | else | |
682 | listing_newline (NULL); | |
683 | } | |
684 | #endif | |
041ff4dd NC |
685 | /* C is the 1st significant character. |
686 | Input_line_pointer points after that character. */ | |
252b5132 RH |
687 | if (is_name_beginner (c)) |
688 | { | |
041ff4dd | 689 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
690 | HANDLE_CONDITIONAL_ASSEMBLY (); |
691 | ||
692 | s = --input_line_pointer; | |
041ff4dd NC |
693 | c = get_symbol_end (); /* name's delimiter. */ |
694 | ||
695 | /* C is character after symbol. | |
d6415f6c AM |
696 | That character's place in the input line is now '\0'. |
697 | S points to the beginning of the symbol. | |
698 | [In case of pseudo-op, s->'.'.] | |
699 | Input_line_pointer->'\0' where c was. */ | |
041ff4dd | 700 | if (TC_START_LABEL (c, input_line_pointer)) |
252b5132 RH |
701 | { |
702 | if (flag_m68k_mri) | |
703 | { | |
704 | char *rest = input_line_pointer + 1; | |
705 | ||
706 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
707 | if (*rest == ':') |
708 | ++rest; | |
f0e652b4 | 709 | |
252b5132 RH |
710 | if (*rest == ' ' || *rest == '\t') |
711 | ++rest; | |
f0e652b4 | 712 | |
252b5132 RH |
713 | if ((strncasecmp (rest, "EQU", 3) == 0 |
714 | || strncasecmp (rest, "SET", 3) == 0) | |
715 | && (rest[3] == ' ' || rest[3] == '\t')) | |
716 | { | |
717 | input_line_pointer = rest + 3; | |
718 | equals (s, 1); | |
719 | continue; | |
720 | } | |
721 | } | |
722 | ||
041ff4dd NC |
723 | line_label = colon (s); /* User-defined label. */ |
724 | /* Put ':' back for error messages' sake. */ | |
725 | *input_line_pointer++ = ':'; | |
a645d1eb L |
726 | #ifdef tc_check_label |
727 | tc_check_label (line_label); | |
728 | #endif | |
041ff4dd | 729 | /* Input_line_pointer->after ':'. */ |
252b5132 | 730 | SKIP_WHITESPACE (); |
252b5132 | 731 | } |
ee3c9814 CM |
732 | else if ((c == '=' |
733 | || ((c == ' ' || c == '\t') | |
734 | && input_line_pointer[1] == '=')) | |
735 | #ifdef TC_EQUAL_IN_INSN | |
736 | && !TC_EQUAL_IN_INSN (c, s) | |
737 | #endif | |
738 | ) | |
252b5132 RH |
739 | { |
740 | equals (s, 1); | |
741 | demand_empty_rest_of_line (); | |
742 | } | |
743 | else | |
041ff4dd NC |
744 | { |
745 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
746 | pop = NULL; |
747 | ||
a8a3b3b2 | 748 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
749 | { |
750 | char *s2 = s; | |
37d8bb27 NC |
751 | |
752 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
753 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 754 | |
252b5132 RH |
755 | while (*s2) |
756 | { | |
3882b010 | 757 | *s2 = TOLOWER (*s2); |
252b5132 RH |
758 | s2++; |
759 | } | |
760 | } | |
761 | #endif | |
abd63a32 | 762 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 RH |
763 | { |
764 | /* The MRI assembler and the m88k use pseudo-ops | |
d6415f6c | 765 | without a period. */ |
252b5132 RH |
766 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
767 | if (pop != NULL && pop->poc_handler == NULL) | |
768 | pop = NULL; | |
769 | } | |
770 | ||
771 | if (pop != NULL | |
041ff4dd | 772 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 773 | { |
041ff4dd | 774 | /* PSEUDO - OP. |
f0e652b4 | 775 | |
d6415f6c AM |
776 | WARNING: c has next char, which may be end-of-line. |
777 | We lookup the pseudo-op table with s+1 because we | |
778 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
779 | |
780 | if (pop == NULL) | |
781 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
782 | if (pop && !pop->poc_handler) |
783 | pop = NULL; | |
252b5132 RH |
784 | |
785 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
786 | automatic alignment directive. What a hack |
787 | this is. */ | |
252b5132 RH |
788 | if (mri_pending_align |
789 | && (pop == NULL | |
041ff4dd NC |
790 | || !((pop->poc_handler == cons |
791 | && pop->poc_val == 1) | |
792 | || (pop->poc_handler == s_space | |
793 | && pop->poc_val == 1) | |
252b5132 | 794 | #ifdef tc_conditional_pseudoop |
041ff4dd | 795 | || tc_conditional_pseudoop (pop) |
252b5132 | 796 | #endif |
041ff4dd NC |
797 | || pop->poc_handler == s_if |
798 | || pop->poc_handler == s_ifdef | |
799 | || pop->poc_handler == s_ifc | |
800 | || pop->poc_handler == s_ifeqs | |
801 | || pop->poc_handler == s_else | |
802 | || pop->poc_handler == s_endif | |
803 | || pop->poc_handler == s_globl | |
804 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
805 | { |
806 | do_align (1, (char *) NULL, 0, 0); | |
807 | mri_pending_align = 0; | |
f0e652b4 | 808 | |
252b5132 RH |
809 | if (line_label != NULL) |
810 | { | |
2b47531b | 811 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
812 | S_SET_VALUE (line_label, frag_now_fix ()); |
813 | } | |
814 | } | |
815 | ||
041ff4dd | 816 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
817 | if (pop == NULL) |
818 | { | |
0e389e77 | 819 | as_bad (_("unknown pseudo-op: `%s'"), s); |
252b5132 RH |
820 | *input_line_pointer = c; |
821 | s_ignore (0); | |
822 | continue; | |
823 | } | |
824 | ||
041ff4dd | 825 | /* Put it back for error messages etc. */ |
252b5132 RH |
826 | *input_line_pointer = c; |
827 | /* The following skip of whitespace is compulsory. | |
828 | A well shaped space is sometimes all that separates | |
041ff4dd | 829 | keyword from operands. */ |
252b5132 RH |
830 | if (c == ' ' || c == '\t') |
831 | input_line_pointer++; | |
041ff4dd NC |
832 | |
833 | /* Input_line is restored. | |
d6415f6c AM |
834 | Input_line_pointer->1st non-blank char |
835 | after pseudo-operation. */ | |
252b5132 RH |
836 | (*pop->poc_handler) (pop->poc_val); |
837 | ||
838 | /* If that was .end, just get out now. */ | |
839 | if (pop->poc_handler == s_end) | |
840 | goto quit; | |
841 | } | |
842 | else | |
843 | { | |
1bf67e0d ILT |
844 | int inquote = 0; |
845 | #ifdef QUOTES_IN_INSN | |
846 | int inescape = 0; | |
847 | #endif | |
252b5132 | 848 | |
041ff4dd NC |
849 | /* WARNING: c has char, which may be end-of-line. */ |
850 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 RH |
851 | *input_line_pointer = c; |
852 | while (!is_end_of_line[(unsigned char) *input_line_pointer] | |
853 | || inquote | |
854 | #ifdef TC_EOL_IN_INSN | |
855 | || TC_EOL_IN_INSN (input_line_pointer) | |
856 | #endif | |
857 | ) | |
858 | { | |
859 | if (flag_m68k_mri && *input_line_pointer == '\'') | |
041ff4dd | 860 | inquote = !inquote; |
1c32af22 RH |
861 | #ifdef QUOTES_IN_INSN |
862 | if (inescape) | |
863 | inescape = 0; | |
864 | else if (*input_line_pointer == '"') | |
041ff4dd | 865 | inquote = !inquote; |
1c32af22 RH |
866 | else if (*input_line_pointer == '\\') |
867 | inescape = 1; | |
868 | #endif | |
252b5132 RH |
869 | input_line_pointer++; |
870 | } | |
871 | ||
872 | c = *input_line_pointer; | |
873 | *input_line_pointer = '\0'; | |
874 | ||
875 | generate_lineno_debug (); | |
876 | ||
877 | if (macro_defined) | |
878 | { | |
879 | sb out; | |
880 | const char *err; | |
041ff4dd | 881 | macro_entry *macro; |
252b5132 | 882 | |
fea17916 | 883 | if (check_macro (s, &out, &err, ¯o)) |
252b5132 RH |
884 | { |
885 | if (err != NULL) | |
4c63da97 | 886 | as_bad ("%s", err); |
252b5132 RH |
887 | *input_line_pointer++ = c; |
888 | input_scrub_include_sb (&out, | |
9f10757c | 889 | input_line_pointer, 1); |
252b5132 RH |
890 | sb_kill (&out); |
891 | buffer_limit = | |
892 | input_scrub_next_buffer (&input_line_pointer); | |
9f10757c | 893 | #ifdef md_macro_info |
041ff4dd | 894 | md_macro_info (macro); |
9f10757c | 895 | #endif |
252b5132 RH |
896 | continue; |
897 | } | |
898 | } | |
899 | ||
900 | if (mri_pending_align) | |
901 | { | |
902 | do_align (1, (char *) NULL, 0, 0); | |
903 | mri_pending_align = 0; | |
904 | if (line_label != NULL) | |
905 | { | |
2b47531b | 906 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
907 | S_SET_VALUE (line_label, frag_now_fix ()); |
908 | } | |
909 | } | |
910 | ||
041ff4dd | 911 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
912 | |
913 | *input_line_pointer++ = c; | |
914 | ||
915 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
916 | this instruction. */ |
917 | } | |
918 | } | |
252b5132 | 919 | continue; |
041ff4dd | 920 | } |
252b5132 RH |
921 | |
922 | /* Empty statement? */ | |
923 | if (is_end_of_line[(unsigned char) c]) | |
924 | continue; | |
925 | ||
3882b010 | 926 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 927 | { |
041ff4dd | 928 | /* local label ("4:") */ |
252b5132 RH |
929 | char *backup = input_line_pointer; |
930 | ||
931 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
932 | ||
933 | temp = c - '0'; | |
934 | ||
041ff4dd | 935 | /* Read the whole number. */ |
3882b010 | 936 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
937 | { |
938 | temp = (temp * 10) + *input_line_pointer - '0'; | |
939 | ++input_line_pointer; | |
041ff4dd | 940 | } |
252b5132 RH |
941 | |
942 | if (LOCAL_LABELS_DOLLAR | |
943 | && *input_line_pointer == '$' | |
944 | && *(input_line_pointer + 1) == ':') | |
945 | { | |
946 | input_line_pointer += 2; | |
947 | ||
948 | if (dollar_label_defined (temp)) | |
949 | { | |
950 | as_fatal (_("label \"%d$\" redefined"), temp); | |
951 | } | |
952 | ||
953 | define_dollar_label (temp); | |
954 | colon (dollar_label_name (temp, 0)); | |
955 | continue; | |
956 | } | |
957 | ||
958 | if (LOCAL_LABELS_FB | |
959 | && *input_line_pointer++ == ':') | |
960 | { | |
961 | fb_label_instance_inc (temp); | |
962 | colon (fb_label_name (temp, 0)); | |
963 | continue; | |
964 | } | |
965 | ||
966 | input_line_pointer = backup; | |
967 | } /* local label ("4:") */ | |
968 | ||
969 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 970 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 971 | sb sbuf; |
252b5132 RH |
972 | char *ends; |
973 | char *new_buf; | |
974 | char *new_tmp; | |
975 | unsigned int new_length; | |
976 | char *tmp_buf = 0; | |
977 | ||
978 | bump_line_counters (); | |
979 | s = input_line_pointer; | |
980 | if (strncmp (s, "APP\n", 4)) | |
981 | continue; /* We ignore it */ | |
982 | s += 4; | |
983 | ||
64e55042 | 984 | sb_new (&sbuf); |
252b5132 RH |
985 | ends = strstr (s, "#NO_APP\n"); |
986 | ||
987 | if (!ends) | |
988 | { | |
989 | unsigned int tmp_len; | |
990 | unsigned int num; | |
991 | ||
992 | /* The end of the #APP wasn't in this buffer. We | |
993 | keep reading in buffers until we find the #NO_APP | |
994 | that goes with this #APP There is one. The specs | |
47eebc20 | 995 | guarantee it... */ |
252b5132 RH |
996 | tmp_len = buffer_limit - s; |
997 | tmp_buf = xmalloc (tmp_len + 1); | |
998 | memcpy (tmp_buf, s, tmp_len); | |
999 | do | |
1000 | { | |
1001 | new_tmp = input_scrub_next_buffer (&buffer); | |
1002 | if (!new_tmp) | |
1003 | break; | |
1004 | else | |
1005 | buffer_limit = new_tmp; | |
1006 | input_line_pointer = buffer; | |
1007 | ends = strstr (buffer, "#NO_APP\n"); | |
1008 | if (ends) | |
1009 | num = ends - buffer; | |
1010 | else | |
1011 | num = buffer_limit - buffer; | |
1012 | ||
1013 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
1014 | memcpy (tmp_buf + tmp_len, buffer, num); | |
1015 | tmp_len += num; | |
1016 | } | |
1017 | while (!ends); | |
1018 | ||
1019 | input_line_pointer = ends ? ends + 8 : NULL; | |
1020 | ||
1021 | s = tmp_buf; | |
1022 | ends = s + tmp_len; | |
1023 | ||
1024 | } | |
1025 | else | |
1026 | { | |
1027 | input_line_pointer = ends + 8; | |
1028 | } | |
1029 | ||
1030 | scrub_string = s; | |
1031 | scrub_string_end = ends; | |
1032 | ||
1033 | new_length = ends - s; | |
1034 | new_buf = (char *) xmalloc (new_length); | |
1035 | new_tmp = new_buf; | |
1036 | for (;;) | |
1037 | { | |
1038 | int space; | |
1039 | int size; | |
1040 | ||
1041 | space = (new_buf + new_length) - new_tmp; | |
1042 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1043 | ||
1044 | if (size < space) | |
1045 | { | |
64e55042 | 1046 | new_tmp[size] = 0; |
252b5132 RH |
1047 | break; |
1048 | } | |
1049 | ||
1050 | new_buf = xrealloc (new_buf, new_length + 100); | |
1051 | new_tmp = new_buf + new_length; | |
1052 | new_length += 100; | |
1053 | } | |
1054 | ||
1055 | if (tmp_buf) | |
1056 | free (tmp_buf); | |
f0e652b4 | 1057 | |
64e55042 HPN |
1058 | /* We've "scrubbed" input to the preferred format. In the |
1059 | process we may have consumed the whole of the remaining | |
1060 | file (and included files). We handle this formatted | |
1061 | input similar to that of macro expansion, letting | |
1062 | actual macro expansion (possibly nested) and other | |
1063 | input expansion work. Beware that in messages, line | |
1064 | numbers and possibly file names will be incorrect. */ | |
1065 | sb_add_string (&sbuf, new_buf); | |
1066 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); | |
1067 | sb_kill (&sbuf); | |
1068 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1069 | free (new_buf); | |
252b5132 RH |
1070 | continue; |
1071 | } | |
1072 | ||
1073 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1074 | ||
1075 | #ifdef tc_unrecognized_line | |
1076 | if (tc_unrecognized_line (c)) | |
1077 | continue; | |
1078 | #endif | |
0e389e77 AM |
1079 | input_line_pointer--; |
1080 | /* Report unknown char as ignored. */ | |
c95b35a9 | 1081 | demand_empty_rest_of_line (); |
041ff4dd | 1082 | } |
252b5132 RH |
1083 | |
1084 | #ifdef md_after_pass_hook | |
1085 | md_after_pass_hook (); | |
1086 | #endif | |
041ff4dd | 1087 | } |
252b5132 RH |
1088 | |
1089 | quit: | |
1090 | ||
1091 | #ifdef md_cleanup | |
041ff4dd | 1092 | md_cleanup (); |
252b5132 | 1093 | #endif |
041ff4dd NC |
1094 | /* Close the input file. */ |
1095 | input_scrub_close (); | |
4c400d5e AM |
1096 | #ifdef WARN_COMMENTS |
1097 | { | |
1098 | if (warn_comment && found_comment) | |
1099 | as_warn_where (found_comment_file, found_comment, | |
1100 | "first comment found here"); | |
1101 | } | |
1102 | #endif | |
252b5132 RH |
1103 | } |
1104 | ||
e5604d79 RS |
1105 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
1106 | Take the sign of the number from X_unsigned rather than X_add_number. */ | |
1107 | ||
1108 | static void | |
1109 | convert_to_bignum (expressionS *exp) | |
1110 | { | |
1111 | valueT value; | |
1112 | unsigned int i; | |
1113 | ||
1114 | value = exp->X_add_number; | |
1115 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1116 | { | |
1117 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1118 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1119 | } | |
1120 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1121 | the sign of the original value. */ | |
1122 | if ((exp->X_add_number < 0) != !exp->X_unsigned) | |
1123 | generic_bignum[i++] = exp->X_unsigned ? 0 : LITTLENUM_MASK; | |
1124 | exp->X_op = O_big; | |
1125 | exp->X_add_number = i; | |
1126 | } | |
1127 | ||
252b5132 RH |
1128 | /* For most MRI pseudo-ops, the line actually ends at the first |
1129 | nonquoted space. This function looks for that point, stuffs a null | |
1130 | in, and sets *STOPCP to the character that used to be there, and | |
1131 | returns the location. | |
1132 | ||
1133 | Until I hear otherwise, I am going to assume that this is only true | |
1134 | for the m68k MRI assembler. */ | |
1135 | ||
1136 | char * | |
39e6acbd | 1137 | mri_comment_field (char *stopcp) |
252b5132 | 1138 | { |
252b5132 | 1139 | char *s; |
041ff4dd | 1140 | #ifdef TC_M68K |
252b5132 RH |
1141 | int inquote = 0; |
1142 | ||
1143 | know (flag_m68k_mri); | |
1144 | ||
1145 | for (s = input_line_pointer; | |
041ff4dd | 1146 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1147 | || inquote); |
1148 | s++) | |
1149 | { | |
1150 | if (*s == '\'') | |
041ff4dd | 1151 | inquote = !inquote; |
252b5132 | 1152 | } |
252b5132 | 1153 | #else |
041ff4dd NC |
1154 | for (s = input_line_pointer; |
1155 | !is_end_of_line[(unsigned char) *s]; | |
1156 | s++) | |
252b5132 | 1157 | ; |
041ff4dd | 1158 | #endif |
252b5132 RH |
1159 | *stopcp = *s; |
1160 | *s = '\0'; | |
f0e652b4 | 1161 | |
252b5132 | 1162 | return s; |
252b5132 RH |
1163 | } |
1164 | ||
1165 | /* Skip to the end of an MRI comment field. */ | |
1166 | ||
1167 | void | |
39e6acbd | 1168 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1169 | { |
1170 | know (flag_mri); | |
1171 | ||
1172 | input_line_pointer = stop; | |
1173 | *stop = stopc; | |
041ff4dd | 1174 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1175 | ++input_line_pointer; |
1176 | } | |
1177 | ||
041ff4dd | 1178 | void |
39e6acbd | 1179 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1180 | { |
1181 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1182 | } | |
1183 | ||
1184 | /* Guts of .align directive. N is the power of two to which to align. | |
1185 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1186 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1187 | the maximum number of characters to skip when doing the alignment, | |
1188 | or 0 if there is no maximum. */ | |
1189 | ||
041ff4dd | 1190 | static void |
39e6acbd | 1191 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1192 | { |
ebeb9253 AM |
1193 | if (now_seg == absolute_section) |
1194 | { | |
1195 | if (fill != NULL) | |
1196 | while (len-- > 0) | |
1197 | if (*fill++ != '\0') | |
1198 | { | |
1199 | as_warn (_("ignoring fill value in absolute section")); | |
1200 | break; | |
1201 | } | |
1202 | fill = NULL; | |
1203 | len = 0; | |
1204 | } | |
1205 | ||
b8861cfb NS |
1206 | #ifdef md_flush_pending_output |
1207 | md_flush_pending_output (); | |
1208 | #endif | |
252b5132 RH |
1209 | #ifdef md_do_align |
1210 | md_do_align (n, fill, len, max, just_record_alignment); | |
1211 | #endif | |
1212 | ||
041ff4dd | 1213 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1214 | if (n != 0 && !need_pass_2) |
1215 | { | |
0a9ef439 RH |
1216 | if (fill == NULL) |
1217 | { | |
1218 | if (subseg_text_p (now_seg)) | |
1219 | frag_align_code (n, max); | |
1220 | else | |
1221 | frag_align (n, 0, max); | |
1222 | } | |
1223 | else if (len <= 1) | |
252b5132 RH |
1224 | frag_align (n, *fill, max); |
1225 | else | |
1226 | frag_align_pattern (n, fill, len, max); | |
1227 | } | |
1228 | ||
1229 | #ifdef md_do_align | |
a6bd2a4f | 1230 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1231 | #endif |
1232 | ||
bea9907b | 1233 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1234 | } |
1235 | ||
1236 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1237 | (in bytes). A negative ARG is the negative of the length of the | |
1238 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1239 | interpreted as the byte boundary, rather than the power of 2. */ | |
1240 | ||
9ebd302d AM |
1241 | #ifdef BFD_ASSEMBLER |
1242 | #define ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1243 | #else | |
1244 | #define ALIGN_LIMIT 15 | |
1245 | #endif | |
1246 | ||
252b5132 | 1247 | static void |
39e6acbd | 1248 | s_align (int arg, int bytes_p) |
252b5132 | 1249 | { |
b617dc20 | 1250 | unsigned int align_limit = ALIGN_LIMIT; |
9ebd302d | 1251 | unsigned int align; |
252b5132 RH |
1252 | char *stop = NULL; |
1253 | char stopc; | |
1254 | offsetT fill = 0; | |
1255 | int max; | |
1256 | int fill_p; | |
1257 | ||
1258 | if (flag_mri) | |
1259 | stop = mri_comment_field (&stopc); | |
1260 | ||
1261 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1262 | { | |
1263 | if (arg < 0) | |
1264 | align = 0; | |
1265 | else | |
041ff4dd | 1266 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1267 | } |
1268 | else | |
1269 | { | |
1270 | align = get_absolute_expression (); | |
1271 | SKIP_WHITESPACE (); | |
1272 | } | |
1273 | ||
1274 | if (bytes_p) | |
1275 | { | |
1276 | /* Convert to a power of 2. */ | |
1277 | if (align != 0) | |
1278 | { | |
1279 | unsigned int i; | |
1280 | ||
1281 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1282 | ; | |
1283 | if (align != 1) | |
0e389e77 | 1284 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1285 | |
252b5132 RH |
1286 | align = i; |
1287 | } | |
1288 | } | |
1289 | ||
b617dc20 | 1290 | if (align > align_limit) |
252b5132 | 1291 | { |
b617dc20 | 1292 | align = align_limit; |
0e389e77 | 1293 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1294 | } |
1295 | ||
1296 | if (*input_line_pointer != ',') | |
1297 | { | |
1298 | fill_p = 0; | |
1299 | max = 0; | |
1300 | } | |
1301 | else | |
1302 | { | |
1303 | ++input_line_pointer; | |
1304 | if (*input_line_pointer == ',') | |
1305 | fill_p = 0; | |
1306 | else | |
1307 | { | |
1308 | fill = get_absolute_expression (); | |
1309 | SKIP_WHITESPACE (); | |
1310 | fill_p = 1; | |
1311 | } | |
1312 | ||
1313 | if (*input_line_pointer != ',') | |
1314 | max = 0; | |
1315 | else | |
1316 | { | |
1317 | ++input_line_pointer; | |
1318 | max = get_absolute_expression (); | |
1319 | } | |
1320 | } | |
1321 | ||
041ff4dd | 1322 | if (!fill_p) |
252b5132 RH |
1323 | { |
1324 | if (arg < 0) | |
1325 | as_warn (_("expected fill pattern missing")); | |
1326 | do_align (align, (char *) NULL, 0, max); | |
1327 | } | |
1328 | else | |
1329 | { | |
1330 | int fill_len; | |
1331 | ||
1332 | if (arg >= 0) | |
1333 | fill_len = 1; | |
1334 | else | |
041ff4dd | 1335 | fill_len = -arg; |
252b5132 RH |
1336 | if (fill_len <= 1) |
1337 | { | |
1338 | char fill_char; | |
1339 | ||
1340 | fill_char = fill; | |
1341 | do_align (align, &fill_char, fill_len, max); | |
1342 | } | |
1343 | else | |
1344 | { | |
1345 | char ab[16]; | |
1346 | ||
1347 | if ((size_t) fill_len > sizeof ab) | |
1348 | abort (); | |
1349 | md_number_to_chars (ab, fill, fill_len); | |
1350 | do_align (align, ab, fill_len, max); | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | demand_empty_rest_of_line (); | |
1355 | ||
1356 | if (flag_mri) | |
1357 | mri_comment_end (stop, stopc); | |
1358 | } | |
1359 | ||
1360 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1361 | align to a 4 byte boundary. */ | |
1362 | ||
041ff4dd | 1363 | void |
39e6acbd | 1364 | s_align_bytes (int arg) |
252b5132 RH |
1365 | { |
1366 | s_align (arg, 1); | |
1367 | } | |
1368 | ||
1369 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1370 | to a 2**4 boundary. */ | |
1371 | ||
041ff4dd | 1372 | void |
39e6acbd | 1373 | s_align_ptwo (int arg) |
252b5132 RH |
1374 | { |
1375 | s_align (arg, 0); | |
1376 | } | |
1377 | ||
caa32fe5 NC |
1378 | /* Switch in and out of alternate macro mode. */ |
1379 | ||
1380 | void | |
1381 | s_altmacro (int on) | |
1382 | { | |
1383 | demand_empty_rest_of_line (); | |
1384 | macro_set_alternate (on); | |
1385 | } | |
1386 | ||
e13bab5a AM |
1387 | symbolS * |
1388 | s_comm_internal (int param, | |
1389 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1390 | { |
e13bab5a AM |
1391 | char *name; |
1392 | char c; | |
1393 | char *p; | |
1394 | offsetT temp, size; | |
1395 | symbolS *symbolP = NULL; | |
252b5132 RH |
1396 | char *stop = NULL; |
1397 | char stopc; | |
e13bab5a | 1398 | expressionS exp; |
252b5132 RH |
1399 | |
1400 | if (flag_mri) | |
1401 | stop = mri_comment_field (&stopc); | |
1402 | ||
1403 | name = input_line_pointer; | |
1404 | c = get_symbol_end (); | |
041ff4dd | 1405 | /* Just after name is now '\0'. */ |
252b5132 RH |
1406 | p = input_line_pointer; |
1407 | *p = c; | |
0e389e77 AM |
1408 | |
1409 | if (name == p) | |
1410 | { | |
1411 | as_bad (_("expected symbol name")); | |
1412 | discard_rest_of_line (); | |
e13bab5a | 1413 | goto out; |
0e389e77 AM |
1414 | } |
1415 | ||
252b5132 | 1416 | SKIP_WHITESPACE (); |
f0e652b4 | 1417 | |
e13bab5a AM |
1418 | /* Accept an optional comma after the name. The comma used to be |
1419 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1420 | if (*input_line_pointer == ',') | |
1421 | input_line_pointer++; | |
1422 | ||
e13bab5a AM |
1423 | temp = get_absolute_expr (&exp); |
1424 | size = temp; | |
1425 | #ifdef BFD_ASSEMBLER | |
1426 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; | |
1427 | #endif | |
1428 | if (exp.X_op == O_absent) | |
252b5132 | 1429 | { |
e13bab5a | 1430 | as_bad (_("missing size expression")); |
252b5132 | 1431 | ignore_rest_of_line (); |
e13bab5a | 1432 | goto out; |
252b5132 | 1433 | } |
e13bab5a | 1434 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1435 | { |
e13bab5a | 1436 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1437 | ignore_rest_of_line (); |
e13bab5a | 1438 | goto out; |
252b5132 | 1439 | } |
f0e652b4 | 1440 | |
a207757e | 1441 | *p = 0; |
252b5132 | 1442 | symbolP = symbol_find_or_make (name); |
041ff4dd | 1443 | if (S_IS_DEFINED (symbolP) && !S_IS_COMMON (symbolP)) |
252b5132 | 1444 | { |
e13bab5a AM |
1445 | symbolP = NULL; |
1446 | as_bad (_("symbol `%s' is already defined"), name); | |
1447 | *p = c; | |
252b5132 | 1448 | ignore_rest_of_line (); |
e13bab5a | 1449 | goto out; |
252b5132 | 1450 | } |
f0e652b4 | 1451 | |
e13bab5a AM |
1452 | size = S_GET_VALUE (symbolP); |
1453 | if (size == 0) | |
1454 | size = temp; | |
1455 | else if (size != temp) | |
1456 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1457 | name, (long) size, (long) temp); | |
1458 | ||
1459 | *p = c; | |
1460 | if (comm_parse_extra != NULL) | |
1461 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1462 | else |
1463 | { | |
e13bab5a | 1464 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1465 | S_SET_EXTERNAL (symbolP); |
252b5132 | 1466 | #ifdef OBJ_VMS |
e13bab5a AM |
1467 | { |
1468 | extern int flag_one; | |
1469 | if (size == 0 || !flag_one) | |
1470 | S_GET_OTHER (symbolP) = const_flag; | |
1471 | } | |
1472 | #endif | |
1473 | } | |
252b5132 RH |
1474 | |
1475 | demand_empty_rest_of_line (); | |
e13bab5a | 1476 | out: |
252b5132 RH |
1477 | if (flag_mri) |
1478 | mri_comment_end (stop, stopc); | |
e13bab5a AM |
1479 | return symbolP; |
1480 | } | |
1481 | ||
1482 | void | |
1483 | s_comm (int ignore) | |
1484 | { | |
1485 | s_comm_internal (ignore, NULL); | |
1486 | } | |
252b5132 RH |
1487 | |
1488 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1489 | symbol with the appropriate name. We make s_space do the right | |
1490 | thing by increasing the size. */ | |
1491 | ||
1492 | void | |
39e6acbd | 1493 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1494 | { |
1495 | char *name; | |
1496 | char c; | |
1497 | char *alc = NULL; | |
1498 | symbolS *sym; | |
1499 | offsetT align; | |
1500 | char *stop = NULL; | |
1501 | char stopc; | |
1502 | ||
041ff4dd | 1503 | if (!flag_mri) |
252b5132 RH |
1504 | { |
1505 | s_comm (0); | |
1506 | return; | |
1507 | } | |
1508 | ||
1509 | stop = mri_comment_field (&stopc); | |
1510 | ||
1511 | SKIP_WHITESPACE (); | |
1512 | ||
1513 | name = input_line_pointer; | |
3882b010 | 1514 | if (!ISDIGIT (*name)) |
252b5132 RH |
1515 | c = get_symbol_end (); |
1516 | else | |
1517 | { | |
1518 | do | |
1519 | { | |
1520 | ++input_line_pointer; | |
1521 | } | |
3882b010 | 1522 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1523 | |
252b5132 RH |
1524 | c = *input_line_pointer; |
1525 | *input_line_pointer = '\0'; | |
1526 | ||
1527 | if (line_label != NULL) | |
1528 | { | |
1529 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1530 | + (input_line_pointer - name) | |
1531 | + 1); | |
1532 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1533 | name = alc; | |
1534 | } | |
1535 | } | |
1536 | ||
1537 | sym = symbol_find_or_make (name); | |
1538 | *input_line_pointer = c; | |
1539 | if (alc != NULL) | |
1540 | free (alc); | |
1541 | ||
1542 | if (*input_line_pointer != ',') | |
1543 | align = 0; | |
1544 | else | |
1545 | { | |
1546 | ++input_line_pointer; | |
1547 | align = get_absolute_expression (); | |
1548 | } | |
1549 | ||
041ff4dd | 1550 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1551 | { |
0e389e77 | 1552 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1553 | ignore_rest_of_line (); |
1554 | mri_comment_end (stop, stopc); | |
1555 | return; | |
1556 | } | |
1557 | ||
1558 | S_SET_EXTERNAL (sym); | |
1559 | mri_common_symbol = sym; | |
1560 | ||
1561 | #ifdef S_SET_ALIGN | |
1562 | if (align != 0) | |
1563 | S_SET_ALIGN (sym, align); | |
1564 | #endif | |
1565 | ||
1566 | if (line_label != NULL) | |
1567 | { | |
2b47531b ILT |
1568 | expressionS exp; |
1569 | exp.X_op = O_symbol; | |
1570 | exp.X_add_symbol = sym; | |
1571 | exp.X_add_number = 0; | |
1572 | symbol_set_value_expression (line_label, &exp); | |
1573 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1574 | S_SET_SEGMENT (line_label, expr_section); |
1575 | } | |
1576 | ||
1577 | /* FIXME: We just ignore the small argument, which distinguishes | |
1578 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1579 | ||
1580 | /* Ignore the type and hptype. */ | |
1581 | if (*input_line_pointer == ',') | |
1582 | input_line_pointer += 2; | |
1583 | if (*input_line_pointer == ',') | |
1584 | input_line_pointer += 2; | |
1585 | ||
1586 | demand_empty_rest_of_line (); | |
1587 | ||
1588 | mri_comment_end (stop, stopc); | |
1589 | } | |
1590 | ||
1591 | void | |
39e6acbd | 1592 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1593 | { |
1594 | segT section; | |
1595 | register int temp; | |
1596 | ||
1597 | temp = get_absolute_expression (); | |
1598 | if (flag_readonly_data_in_text) | |
1599 | { | |
1600 | section = text_section; | |
1601 | temp += 1000; | |
1602 | } | |
1603 | else | |
1604 | section = data_section; | |
1605 | ||
1606 | subseg_set (section, (subsegT) temp); | |
1607 | ||
1608 | #ifdef OBJ_VMS | |
1609 | const_flag = 0; | |
1610 | #endif | |
1611 | demand_empty_rest_of_line (); | |
1612 | } | |
1613 | ||
1614 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1615 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1616 | file name. This default definition may be overridden by the object | |
1617 | or CPU specific pseudo-ops. This function is also the default | |
1618 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1619 | .file. */ | |
1620 | ||
ecb4347a | 1621 | void |
f17c130b | 1622 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1623 | { |
1624 | #ifdef LISTING | |
1625 | if (listing) | |
1626 | listing_source_file (file); | |
1627 | #endif | |
1628 | register_dependency (file); | |
1629 | #ifdef obj_app_file | |
c04f5787 | 1630 | obj_app_file (file, appfile); |
ecb4347a DJ |
1631 | #endif |
1632 | } | |
1633 | ||
041ff4dd | 1634 | void |
39e6acbd | 1635 | s_app_file (int appfile) |
252b5132 RH |
1636 | { |
1637 | register char *s; | |
1638 | int length; | |
1639 | ||
041ff4dd | 1640 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1641 | if ((s = demand_copy_string (&length)) != 0) |
1642 | { | |
1643 | /* If this is a fake .appfile, a fake newline was inserted into | |
1644 | the buffer. Passing -2 to new_logical_line tells it to | |
1645 | account for it. */ | |
1646 | int may_omit | |
041ff4dd | 1647 | = (!new_logical_line (s, appfile ? -2 : -1) && appfile); |
252b5132 RH |
1648 | |
1649 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1650 | backquote. */ |
252b5132 RH |
1651 | if (flag_m68k_mri |
1652 | && *input_line_pointer == '\'' | |
1653 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1654 | ++input_line_pointer; | |
1655 | ||
1656 | demand_empty_rest_of_line (); | |
041ff4dd | 1657 | if (!may_omit) |
c04f5787 | 1658 | s_app_file_string (s, appfile); |
252b5132 RH |
1659 | } |
1660 | } | |
1661 | ||
1662 | /* Handle the .appline pseudo-op. This is automatically generated by | |
1663 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1664 | default definition may be overridden by the object or CPU specific | |
1665 | pseudo-ops. */ | |
1666 | ||
1667 | void | |
39e6acbd | 1668 | s_app_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1669 | { |
1670 | int l; | |
1671 | ||
1672 | /* The given number is that of the next line. */ | |
1673 | l = get_absolute_expression () - 1; | |
1674 | if (l < 0) | |
1675 | /* Some of the back ends can't deal with non-positive line numbers. | |
1676 | Besides, it's silly. */ | |
0e389e77 | 1677 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1678 | l + 1); |
252b5132 RH |
1679 | else |
1680 | { | |
1681 | new_logical_line ((char *) NULL, l); | |
1682 | #ifdef LISTING | |
1683 | if (listing) | |
1684 | listing_source_line (l); | |
1685 | #endif | |
1686 | } | |
1687 | demand_empty_rest_of_line (); | |
1688 | } | |
1689 | ||
1690 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1691 | read_a_source_file. */ | |
1692 | ||
1693 | void | |
39e6acbd | 1694 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1695 | { |
1696 | if (flag_mri) | |
1697 | { | |
1698 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 1699 | but we don't support that. */ |
252b5132 | 1700 | SKIP_WHITESPACE (); |
041ff4dd | 1701 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1702 | && *input_line_pointer != '*' |
1703 | && *input_line_pointer != '!') | |
1704 | as_warn (_("start address not supported")); | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | /* Handle the .err pseudo-op. */ | |
1709 | ||
1710 | void | |
39e6acbd | 1711 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1712 | { |
1713 | as_bad (_(".err encountered")); | |
1714 | demand_empty_rest_of_line (); | |
d190d046 HPN |
1715 | } |
1716 | ||
1717 | /* Handle the .error and .warning pseudo-ops. */ | |
1718 | ||
1719 | void | |
1720 | s_errwarn (int err) | |
1721 | { | |
1722 | int len; | |
1723 | /* The purpose for the conditional assignment is not to | |
1724 | internationalize the directive itself, but that we need a | |
1725 | self-contained message, one that can be passed like the | |
1726 | demand_copy_C_string return value, and with no assumption on the | |
1727 | location of the name of the directive within the message. */ | |
1728 | char *msg | |
1729 | = (err ? _(".error directive invoked in source file") | |
1730 | : _(".warning directive invoked in source file")); | |
1731 | ||
1732 | if (!is_it_end_of_statement ()) | |
1733 | { | |
1734 | if (*input_line_pointer != '\"') | |
1735 | { | |
1736 | as_bad (_("%s argument must be a string"), | |
1737 | err ? ".error" : ".warning"); | |
1738 | discard_rest_of_line (); | |
1739 | return; | |
1740 | } | |
1741 | ||
1742 | msg = demand_copy_C_string (&len); | |
1743 | if (msg == NULL) | |
1744 | return; | |
1745 | } | |
1746 | ||
1747 | if (err) | |
1748 | as_bad ("%s", msg); | |
1749 | else | |
1750 | as_warn ("%s", msg); | |
1751 | demand_empty_rest_of_line (); | |
252b5132 RH |
1752 | } |
1753 | ||
1754 | /* Handle the MRI fail pseudo-op. */ | |
1755 | ||
1756 | void | |
39e6acbd | 1757 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1758 | { |
1759 | offsetT temp; | |
1760 | char *stop = NULL; | |
1761 | char stopc; | |
1762 | ||
1763 | if (flag_mri) | |
1764 | stop = mri_comment_field (&stopc); | |
1765 | ||
1766 | temp = get_absolute_expression (); | |
1767 | if (temp >= 500) | |
1768 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1769 | else | |
1770 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1771 | ||
1772 | demand_empty_rest_of_line (); | |
1773 | ||
1774 | if (flag_mri) | |
1775 | mri_comment_end (stop, stopc); | |
1776 | } | |
1777 | ||
041ff4dd | 1778 | void |
39e6acbd | 1779 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1780 | { |
1781 | expressionS rep_exp; | |
1782 | long size = 1; | |
1783 | register long fill = 0; | |
1784 | char *p; | |
1785 | ||
1786 | #ifdef md_flush_pending_output | |
1787 | md_flush_pending_output (); | |
1788 | #endif | |
1789 | ||
1790 | get_known_segmented_expression (&rep_exp); | |
1791 | if (*input_line_pointer == ',') | |
1792 | { | |
1793 | input_line_pointer++; | |
1794 | size = get_absolute_expression (); | |
1795 | if (*input_line_pointer == ',') | |
1796 | { | |
1797 | input_line_pointer++; | |
1798 | fill = get_absolute_expression (); | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1803 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1804 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1805 | { | |
0e389e77 | 1806 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
1807 | size = BSD_FILL_SIZE_CROCK_8; |
1808 | } | |
1809 | if (size < 0) | |
1810 | { | |
0e389e77 | 1811 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
1812 | size = 0; |
1813 | } | |
1814 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1815 | { | |
1816 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 1817 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
1818 | size = 0; |
1819 | } | |
1820 | ||
1821 | if (size && !need_pass_2) | |
1822 | { | |
1823 | if (rep_exp.X_op == O_constant) | |
1824 | { | |
1825 | p = frag_var (rs_fill, (int) size, (int) size, | |
1826 | (relax_substateT) 0, (symbolS *) 0, | |
1827 | (offsetT) rep_exp.X_add_number, | |
1828 | (char *) 0); | |
1829 | } | |
1830 | else | |
1831 | { | |
1832 | /* We don't have a constant repeat count, so we can't use | |
1833 | rs_fill. We can get the same results out of rs_space, | |
1834 | but its argument is in bytes, so we must multiply the | |
1835 | repeat count by size. */ | |
1836 | ||
1837 | symbolS *rep_sym; | |
1838 | rep_sym = make_expr_symbol (&rep_exp); | |
1839 | if (size != 1) | |
1840 | { | |
1841 | expressionS size_exp; | |
1842 | size_exp.X_op = O_constant; | |
1843 | size_exp.X_add_number = size; | |
1844 | ||
1845 | rep_exp.X_op = O_multiply; | |
1846 | rep_exp.X_add_symbol = rep_sym; | |
1847 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1848 | rep_exp.X_add_number = 0; | |
1849 | rep_sym = make_expr_symbol (&rep_exp); | |
1850 | } | |
1851 | ||
1852 | p = frag_var (rs_space, (int) size, (int) size, | |
1853 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1854 | } | |
f0e652b4 | 1855 | |
252b5132 | 1856 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 1857 | |
252b5132 | 1858 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
1859 | flavoured AS. The following bizarre behaviour is to be |
1860 | compatible with above. I guess they tried to take up to 8 | |
1861 | bytes from a 4-byte expression and they forgot to sign | |
1862 | extend. */ | |
252b5132 RH |
1863 | #define BSD_FILL_SIZE_CROCK_4 (4) |
1864 | md_number_to_chars (p, (valueT) fill, | |
1865 | (size > BSD_FILL_SIZE_CROCK_4 | |
1866 | ? BSD_FILL_SIZE_CROCK_4 | |
1867 | : (int) size)); | |
1868 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
1869 | but emits no error message because it seems a legal thing to do. |
1870 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 1871 | compiler. */ |
252b5132 RH |
1872 | } |
1873 | demand_empty_rest_of_line (); | |
1874 | } | |
1875 | ||
041ff4dd | 1876 | void |
39e6acbd | 1877 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1878 | { |
1879 | char *name; | |
1880 | int c; | |
1881 | symbolS *symbolP; | |
1882 | char *stop = NULL; | |
1883 | char stopc; | |
1884 | ||
1885 | if (flag_mri) | |
1886 | stop = mri_comment_field (&stopc); | |
1887 | ||
1888 | do | |
1889 | { | |
1890 | name = input_line_pointer; | |
1891 | c = get_symbol_end (); | |
1892 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
1893 | S_SET_EXTERNAL (symbolP); |
1894 | ||
252b5132 RH |
1895 | *input_line_pointer = c; |
1896 | SKIP_WHITESPACE (); | |
58b5739a | 1897 | c = *input_line_pointer; |
252b5132 RH |
1898 | if (c == ',') |
1899 | { | |
1900 | input_line_pointer++; | |
1901 | SKIP_WHITESPACE (); | |
0e389e77 | 1902 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1903 | c = '\n'; |
1904 | } | |
1905 | } | |
1906 | while (c == ','); | |
1907 | ||
1908 | demand_empty_rest_of_line (); | |
1909 | ||
1910 | if (flag_mri) | |
1911 | mri_comment_end (stop, stopc); | |
1912 | } | |
1913 | ||
1914 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
1915 | ||
1916 | void | |
39e6acbd | 1917 | s_irp (int irpc) |
252b5132 RH |
1918 | { |
1919 | char *file; | |
1920 | unsigned int line; | |
1921 | sb s; | |
1922 | const char *err; | |
1923 | sb out; | |
1924 | ||
1925 | as_where (&file, &line); | |
1926 | ||
1927 | sb_new (&s); | |
041ff4dd | 1928 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1929 | sb_add_char (&s, *input_line_pointer++); |
1930 | ||
1931 | sb_new (&out); | |
1932 | ||
fea17916 | 1933 | err = expand_irp (irpc, 0, &s, &out, get_line_sb); |
252b5132 RH |
1934 | if (err != NULL) |
1935 | as_bad_where (file, line, "%s", err); | |
1936 | ||
1937 | sb_kill (&s); | |
1938 | ||
9f10757c | 1939 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
1940 | sb_kill (&out); |
1941 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1942 | } | |
1943 | ||
1944 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
1945 | the section to only be linked once. However, this is not supported | |
1946 | by most object file formats. This takes an optional argument, | |
1947 | which is what to do about duplicates. */ | |
1948 | ||
1949 | void | |
39e6acbd | 1950 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1951 | { |
1952 | enum linkonce_type type; | |
1953 | ||
1954 | SKIP_WHITESPACE (); | |
1955 | ||
1956 | type = LINKONCE_DISCARD; | |
1957 | ||
041ff4dd | 1958 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1959 | { |
1960 | char *s; | |
1961 | char c; | |
1962 | ||
1963 | s = input_line_pointer; | |
1964 | c = get_symbol_end (); | |
1965 | if (strcasecmp (s, "discard") == 0) | |
1966 | type = LINKONCE_DISCARD; | |
1967 | else if (strcasecmp (s, "one_only") == 0) | |
1968 | type = LINKONCE_ONE_ONLY; | |
1969 | else if (strcasecmp (s, "same_size") == 0) | |
1970 | type = LINKONCE_SAME_SIZE; | |
1971 | else if (strcasecmp (s, "same_contents") == 0) | |
1972 | type = LINKONCE_SAME_CONTENTS; | |
1973 | else | |
1974 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
1975 | ||
1976 | *input_line_pointer = c; | |
1977 | } | |
1978 | ||
1979 | #ifdef obj_handle_link_once | |
1980 | obj_handle_link_once (type); | |
1981 | #else /* ! defined (obj_handle_link_once) */ | |
1982 | #ifdef BFD_ASSEMBLER | |
1983 | { | |
1984 | flagword flags; | |
1985 | ||
1986 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
1987 | as_warn (_(".linkonce is not supported for this object file format")); | |
1988 | ||
1989 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
1990 | flags |= SEC_LINK_ONCE; | |
1991 | switch (type) | |
1992 | { | |
1993 | default: | |
1994 | abort (); | |
1995 | case LINKONCE_DISCARD: | |
1996 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
1997 | break; | |
1998 | case LINKONCE_ONE_ONLY: | |
1999 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2000 | break; | |
2001 | case LINKONCE_SAME_SIZE: | |
2002 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2003 | break; | |
2004 | case LINKONCE_SAME_CONTENTS: | |
2005 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2006 | break; | |
2007 | } | |
041ff4dd | 2008 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2009 | as_bad (_("bfd_set_section_flags: %s"), |
2010 | bfd_errmsg (bfd_get_error ())); | |
2011 | } | |
2012 | #else /* ! defined (BFD_ASSEMBLER) */ | |
2013 | as_warn (_(".linkonce is not supported for this object file format")); | |
2014 | #endif /* ! defined (BFD_ASSEMBLER) */ | |
2015 | #endif /* ! defined (obj_handle_link_once) */ | |
2016 | ||
2017 | demand_empty_rest_of_line (); | |
2018 | } | |
2019 | ||
e13bab5a AM |
2020 | void |
2021 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2022 | { |
e13bab5a | 2023 | char *pfrag; |
252b5132 RH |
2024 | segT current_seg = now_seg; |
2025 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2026 | segT bss_seg = bss_section; |
2027 | ||
252b5132 RH |
2028 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2029 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2030 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2031 | { | |
2032 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2033 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2034 | { |
2035 | bss_seg = subseg_new (".sbss", 1); | |
2036 | seg_info (bss_seg)->bss = 1; | |
2037 | #ifdef BFD_ASSEMBLER | |
041ff4dd | 2038 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2039 | as_warn (_("error setting flags for \".sbss\": %s"), |
2040 | bfd_errmsg (bfd_get_error ())); | |
2041 | #endif | |
2042 | } | |
2043 | } | |
2044 | #endif | |
e13bab5a | 2045 | subseg_set (bss_seg, 1); |
8684e216 | 2046 | |
e13bab5a | 2047 | if (align) |
041ff4dd | 2048 | { |
e13bab5a AM |
2049 | record_alignment (bss_seg, align); |
2050 | frag_align (align, 0, 0); | |
041ff4dd | 2051 | } |
252b5132 | 2052 | |
e13bab5a AM |
2053 | /* Detach from old frag. */ |
2054 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2055 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2056 | |
e13bab5a AM |
2057 | symbol_set_frag (symbolP, frag_now); |
2058 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2059 | *pfrag = 0; | |
f0e652b4 | 2060 | |
e13bab5a AM |
2061 | #ifdef S_SET_SIZE |
2062 | S_SET_SIZE (symbolP, size); | |
2063 | #endif | |
2064 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2065 | |
e13bab5a AM |
2066 | #ifdef OBJ_COFF |
2067 | /* The symbol may already have been created with a preceding | |
2068 | ".globl" directive -- be careful not to step on storage class | |
2069 | in that case. Otherwise, set it to static. */ | |
2070 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2071 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2072 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2073 | |
e13bab5a AM |
2074 | subseg_set (current_seg, current_subseg); |
2075 | } | |
f0e652b4 | 2076 | |
e13bab5a AM |
2077 | offsetT |
2078 | parse_align (int align_bytes) | |
2079 | { | |
2080 | expressionS exp; | |
2081 | addressT align; | |
252b5132 | 2082 | |
e13bab5a AM |
2083 | SKIP_WHITESPACE (); |
2084 | if (*input_line_pointer != ',') | |
2085 | { | |
2086 | no_align: | |
2087 | as_bad (_("expected alignment after size")); | |
2088 | ignore_rest_of_line (); | |
2089 | return -1; | |
2090 | } | |
f0e652b4 | 2091 | |
e13bab5a AM |
2092 | input_line_pointer++; |
2093 | SKIP_WHITESPACE (); | |
f0e652b4 | 2094 | |
e13bab5a AM |
2095 | align = get_absolute_expr (&exp); |
2096 | if (exp.X_op == O_absent) | |
2097 | goto no_align; | |
2098 | ||
2099 | if (!exp.X_unsigned) | |
2100 | { | |
2101 | as_warn (_("alignment negative; 0 assumed")); | |
2102 | align = 0; | |
041ff4dd | 2103 | } |
e13bab5a AM |
2104 | |
2105 | if (align_bytes && align != 0) | |
252b5132 | 2106 | { |
e13bab5a AM |
2107 | /* convert to a power of 2 alignment */ |
2108 | unsigned int alignp2 = 0; | |
2109 | while ((align & 1) == 0) | |
2110 | align >>= 1, ++alignp2; | |
2111 | if (align != 1) | |
252b5132 | 2112 | { |
e13bab5a AM |
2113 | as_bad (_("alignment not a power of 2")); |
2114 | ignore_rest_of_line (); | |
2115 | return -1; | |
252b5132 | 2116 | } |
e13bab5a | 2117 | align = alignp2; |
252b5132 | 2118 | } |
e13bab5a AM |
2119 | return align; |
2120 | } | |
252b5132 | 2121 | |
e13bab5a AM |
2122 | /* Called from s_comm_internal after symbol name and size have been |
2123 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2124 | 1 if this was a ".bss" directive which has a 3rd argument | |
2125 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2126 | with alignment in bytes. */ | |
252b5132 | 2127 | |
13c56984 | 2128 | symbolS * |
e13bab5a AM |
2129 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2130 | { | |
2131 | addressT align = 0; | |
252b5132 | 2132 | |
e13bab5a AM |
2133 | if (needs_align) |
2134 | { | |
2135 | align = parse_align (needs_align - 1); | |
2136 | if (align == (addressT) -1) | |
2137 | return NULL; | |
252b5132 RH |
2138 | } |
2139 | else | |
e13bab5a AM |
2140 | /* Assume some objects may require alignment on some systems. */ |
2141 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2142 | |
e13bab5a AM |
2143 | bss_alloc (symbolP, size, align); |
2144 | return symbolP; | |
041ff4dd | 2145 | } |
252b5132 RH |
2146 | |
2147 | void | |
39e6acbd | 2148 | s_lcomm (int needs_align) |
252b5132 | 2149 | { |
e13bab5a | 2150 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2151 | } |
2152 | ||
041ff4dd | 2153 | void |
39e6acbd | 2154 | s_lcomm_bytes (int needs_align) |
252b5132 | 2155 | { |
e13bab5a | 2156 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2157 | } |
2158 | ||
041ff4dd | 2159 | void |
39e6acbd | 2160 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2161 | { |
2162 | register char *name; | |
2163 | register char c; | |
2164 | register char *p; | |
2165 | expressionS exp; | |
2166 | register symbolS *symbolP; | |
2167 | ||
041ff4dd | 2168 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2169 | name = input_line_pointer; |
2170 | c = get_symbol_end (); | |
2171 | p = input_line_pointer; | |
2172 | *p = c; | |
0e389e77 AM |
2173 | |
2174 | if (name == p) | |
2175 | { | |
2176 | as_bad (_("expected symbol name")); | |
2177 | discard_rest_of_line (); | |
2178 | return; | |
2179 | } | |
2180 | ||
252b5132 | 2181 | SKIP_WHITESPACE (); |
f0e652b4 | 2182 | |
252b5132 RH |
2183 | if (*input_line_pointer != ',') |
2184 | { | |
2185 | *p = 0; | |
0e389e77 | 2186 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2187 | *p = c; |
2188 | ignore_rest_of_line (); | |
2189 | return; | |
2190 | } | |
f0e652b4 | 2191 | |
252b5132 RH |
2192 | input_line_pointer++; |
2193 | expression (&exp); | |
f0e652b4 | 2194 | |
252b5132 RH |
2195 | if (exp.X_op != O_constant |
2196 | && exp.X_op != O_register) | |
2197 | { | |
2198 | as_bad (_("bad expression")); | |
2199 | ignore_rest_of_line (); | |
2200 | return; | |
2201 | } | |
f0e652b4 | 2202 | |
252b5132 RH |
2203 | *p = 0; |
2204 | symbolP = symbol_find_or_make (name); | |
2205 | ||
2206 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && | |
2207 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
2208 | those fields, and I can't see when they'd ever be tripped. I | |
2209 | don't think I understand why they were here so I may have | |
2210 | introduced a bug. As recently as 1.37 didn't have this test | |
041ff4dd | 2211 | anyway. xoxorich. */ |
252b5132 RH |
2212 | |
2213 | if (S_GET_SEGMENT (symbolP) == undefined_section | |
2214 | && S_GET_VALUE (symbolP) == 0) | |
2215 | { | |
2216 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2217 | keep the "external" bit. */ |
252b5132 RH |
2218 | S_SET_SEGMENT (symbolP, |
2219 | (exp.X_op == O_constant | |
2220 | ? absolute_section | |
2221 | : reg_section)); | |
2222 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2223 | } | |
2224 | else | |
2225 | { | |
0e389e77 | 2226 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2227 | } |
f0e652b4 | 2228 | |
252b5132 RH |
2229 | *p = c; |
2230 | demand_empty_rest_of_line (); | |
041ff4dd | 2231 | } |
252b5132 | 2232 | |
0822d075 NC |
2233 | /* Read a line into an sb. Returns the character that ended the line |
2234 | or zero if there are no more lines. */ | |
252b5132 RH |
2235 | |
2236 | static int | |
39e6acbd | 2237 | get_line_sb (sb *line) |
252b5132 RH |
2238 | { |
2239 | char quote1, quote2, inquote; | |
0822d075 | 2240 | unsigned char c; |
252b5132 RH |
2241 | |
2242 | if (input_line_pointer[-1] == '\n') | |
2243 | bump_line_counters (); | |
2244 | ||
2245 | if (input_line_pointer >= buffer_limit) | |
2246 | { | |
2247 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2248 | if (buffer_limit == 0) | |
2249 | return 0; | |
2250 | } | |
2251 | ||
2252 | /* If app.c sets any other characters to LEX_IS_STRINGQUOTE, this | |
2253 | code needs to be changed. */ | |
041ff4dd | 2254 | if (!flag_m68k_mri) |
252b5132 RH |
2255 | quote1 = '"'; |
2256 | else | |
2257 | quote1 = '\0'; | |
2258 | ||
2259 | quote2 = '\0'; | |
2260 | if (flag_m68k_mri) | |
2261 | quote2 = '\''; | |
2262 | #ifdef LEX_IS_STRINGQUOTE | |
2263 | quote2 = '\''; | |
2264 | #endif | |
2265 | ||
2266 | inquote = '\0'; | |
f0e652b4 | 2267 | |
0822d075 NC |
2268 | while ((c = * input_line_pointer ++) != 0 |
2269 | && (!is_end_of_line[c] | |
2270 | || (inquote != '\0' && c != '\n'))) | |
252b5132 | 2271 | { |
0822d075 | 2272 | if (inquote == c) |
252b5132 RH |
2273 | inquote = '\0'; |
2274 | else if (inquote == '\0') | |
2275 | { | |
0822d075 | 2276 | if (c == quote1) |
252b5132 | 2277 | inquote = quote1; |
0822d075 | 2278 | else if (c == quote2) |
252b5132 RH |
2279 | inquote = quote2; |
2280 | } | |
f0e652b4 | 2281 | |
0822d075 | 2282 | sb_add_char (line, c); |
252b5132 | 2283 | } |
f0e652b4 | 2284 | |
0822d075 NC |
2285 | /* Don't skip multiple end-of-line characters, because that breaks support |
2286 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2287 | characters but isn't. Instead just skip one end of line character and | |
2288 | return the character skipped so that the caller can re-insert it if | |
2289 | necessary. */ | |
2290 | return c; | |
252b5132 RH |
2291 | } |
2292 | ||
fea17916 | 2293 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2294 | |
2295 | void | |
39e6acbd | 2296 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2297 | { |
2298 | char *file; | |
2299 | unsigned int line; | |
2300 | sb s; | |
2301 | sb label; | |
2302 | const char *err; | |
2303 | const char *name; | |
2304 | ||
2305 | as_where (&file, &line); | |
2306 | ||
2307 | sb_new (&s); | |
041ff4dd | 2308 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2309 | sb_add_char (&s, *input_line_pointer++); |
2310 | ||
2311 | sb_new (&label); | |
2312 | if (line_label != NULL) | |
2313 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2314 | ||
2315 | err = define_macro (0, &s, &label, get_line_sb, &name); | |
2316 | if (err != NULL) | |
2317 | as_bad_where (file, line, "%s", err); | |
2318 | else | |
2319 | { | |
2320 | if (line_label != NULL) | |
2321 | { | |
2322 | S_SET_SEGMENT (line_label, undefined_section); | |
2323 | S_SET_VALUE (line_label, 0); | |
2b47531b | 2324 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2325 | } |
2326 | ||
abd63a32 | 2327 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2328 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2329 | || (!flag_m68k_mri |
252b5132 RH |
2330 | && *name == '.' |
2331 | && hash_find (po_hash, name + 1) != NULL)) | |
2332 | as_warn (_("attempt to redefine pseudo-op `%s' ignored"), | |
2333 | name); | |
2334 | } | |
2335 | ||
2336 | sb_kill (&s); | |
2337 | } | |
2338 | ||
2339 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2340 | expansion. */ | |
2341 | ||
2342 | void | |
39e6acbd | 2343 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2344 | { |
2345 | cond_exit_macro (macro_nest); | |
2346 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2347 | } | |
2348 | ||
2349 | /* Switch in and out of MRI mode. */ | |
2350 | ||
2351 | void | |
39e6acbd | 2352 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2353 | { |
2354 | int on, old_flag; | |
2355 | ||
2356 | on = get_absolute_expression (); | |
2357 | old_flag = flag_mri; | |
2358 | if (on != 0) | |
2359 | { | |
2360 | flag_mri = 1; | |
2361 | #ifdef TC_M68K | |
2362 | flag_m68k_mri = 1; | |
2363 | #endif | |
2364 | macro_mri_mode (1); | |
2365 | } | |
2366 | else | |
2367 | { | |
2368 | flag_mri = 0; | |
abd63a32 | 2369 | #ifdef TC_M68K |
252b5132 | 2370 | flag_m68k_mri = 0; |
abd63a32 | 2371 | #endif |
252b5132 RH |
2372 | macro_mri_mode (0); |
2373 | } | |
2374 | ||
2375 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2376 | update the operator rankings. */ | |
2377 | expr_set_precedence (); | |
2378 | ||
2379 | #ifdef MRI_MODE_CHANGE | |
2380 | if (on != old_flag) | |
2381 | MRI_MODE_CHANGE (on); | |
2382 | #endif | |
2383 | ||
2384 | demand_empty_rest_of_line (); | |
2385 | } | |
2386 | ||
2387 | /* Handle changing the location counter. */ | |
2388 | ||
2389 | static void | |
39e6acbd | 2390 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 RH |
2391 | { |
2392 | if (segment != now_seg && segment != absolute_section) | |
0e389e77 | 2393 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2394 | |
2395 | if (now_seg == absolute_section) | |
2396 | { | |
2397 | if (fill != 0) | |
2398 | as_warn (_("ignoring fill value in absolute section")); | |
2399 | if (exp->X_op != O_constant) | |
2400 | { | |
2401 | as_bad (_("only constant offsets supported in absolute section")); | |
2402 | exp->X_add_number = 0; | |
2403 | } | |
2404 | abs_section_offset = exp->X_add_number; | |
2405 | } | |
2406 | else | |
2407 | { | |
2408 | char *p; | |
2289f85d AM |
2409 | symbolS *sym = exp->X_add_symbol; |
2410 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2411 | |
2289f85d AM |
2412 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2413 | { | |
2414 | /* Handle complex expressions. */ | |
2415 | sym = make_expr_symbol (exp); | |
2416 | off = 0; | |
2417 | } | |
2418 | ||
2419 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2420 | *p = fill; |
2421 | } | |
2422 | } | |
2423 | ||
041ff4dd | 2424 | void |
39e6acbd | 2425 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2426 | { |
2427 | register segT segment; | |
2428 | expressionS exp; | |
2429 | register long temp_fill; | |
2430 | ||
2431 | #ifdef md_flush_pending_output | |
2432 | md_flush_pending_output (); | |
2433 | #endif | |
2434 | ||
2435 | /* The m68k MRI assembler has a different meaning for .org. It | |
2436 | means to create an absolute section at a given address. We can't | |
2437 | support that--use a linker script instead. */ | |
2438 | if (flag_m68k_mri) | |
2439 | { | |
2440 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2441 | ignore_rest_of_line (); | |
2442 | return; | |
2443 | } | |
2444 | ||
2445 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2446 | thing as a sub-segment-relative origin. Any absolute origin is | |
2447 | given a warning, then assumed to be segment-relative. Any | |
2448 | segmented origin expression ("foo+42") had better be in the right | |
2449 | segment or the .org is ignored. | |
2450 | ||
2451 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2452 | we never know sub-segment sizes when we are reading code. BSD | |
2453 | will crash trying to emit negative numbers of filler bytes in | |
2454 | certain .orgs. We don't crash, but see as-write for that code. | |
2455 | ||
2456 | Don't make frag if need_pass_2==1. */ | |
2457 | segment = get_known_segmented_expression (&exp); | |
2458 | if (*input_line_pointer == ',') | |
2459 | { | |
2460 | input_line_pointer++; | |
2461 | temp_fill = get_absolute_expression (); | |
2462 | } | |
2463 | else | |
2464 | temp_fill = 0; | |
2465 | ||
2466 | if (!need_pass_2) | |
2467 | do_org (segment, &exp, temp_fill); | |
2468 | ||
2469 | demand_empty_rest_of_line (); | |
041ff4dd | 2470 | } |
252b5132 RH |
2471 | |
2472 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2473 | called by the obj-format routine which handles section changing | |
2474 | when in MRI mode. It will create a new section, and return it. It | |
2475 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
2476 | 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the | |
2477 | flags will be set in the section. */ | |
2478 | ||
2479 | void | |
39e6acbd | 2480 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2481 | { |
2482 | #ifdef TC_M68K | |
2483 | ||
2484 | char *name; | |
2485 | char c; | |
2486 | segT seg; | |
2487 | ||
2488 | SKIP_WHITESPACE (); | |
041ff4dd | 2489 | |
252b5132 | 2490 | name = input_line_pointer; |
3882b010 | 2491 | if (!ISDIGIT (*name)) |
252b5132 RH |
2492 | c = get_symbol_end (); |
2493 | else | |
2494 | { | |
2495 | do | |
2496 | { | |
2497 | ++input_line_pointer; | |
2498 | } | |
3882b010 | 2499 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2500 | |
252b5132 RH |
2501 | c = *input_line_pointer; |
2502 | *input_line_pointer = '\0'; | |
2503 | } | |
2504 | ||
2505 | name = xstrdup (name); | |
2506 | ||
2507 | *input_line_pointer = c; | |
2508 | ||
2509 | seg = subseg_new (name, 0); | |
2510 | ||
2511 | if (*input_line_pointer == ',') | |
2512 | { | |
2513 | int align; | |
2514 | ||
2515 | ++input_line_pointer; | |
2516 | align = get_absolute_expression (); | |
2517 | record_alignment (seg, align); | |
2518 | } | |
2519 | ||
2520 | *type = 'C'; | |
2521 | if (*input_line_pointer == ',') | |
2522 | { | |
2523 | c = *++input_line_pointer; | |
3882b010 | 2524 | c = TOUPPER (c); |
252b5132 RH |
2525 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2526 | *type = c; | |
2527 | else | |
2528 | as_bad (_("unrecognized section type")); | |
2529 | ++input_line_pointer; | |
2530 | ||
2531 | #ifdef BFD_ASSEMBLER | |
2532 | { | |
2533 | flagword flags; | |
2534 | ||
2535 | flags = SEC_NO_FLAGS; | |
2536 | if (*type == 'C') | |
2537 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2538 | else if (*type == 'D' || *type == 'M') | |
2539 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2540 | else if (*type == 'R') | |
2541 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2542 | if (flags != SEC_NO_FLAGS) | |
2543 | { | |
041ff4dd | 2544 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2545 | as_warn (_("error setting flags for \"%s\": %s"), |
2546 | bfd_section_name (stdoutput, seg), | |
2547 | bfd_errmsg (bfd_get_error ())); | |
2548 | } | |
2549 | } | |
2550 | #endif | |
2551 | } | |
2552 | ||
2553 | /* Ignore the HP type. */ | |
2554 | if (*input_line_pointer == ',') | |
2555 | input_line_pointer += 2; | |
2556 | ||
2557 | demand_empty_rest_of_line (); | |
2558 | ||
2559 | #else /* ! TC_M68K */ | |
2560 | #ifdef TC_I960 | |
2561 | ||
2562 | char *name; | |
2563 | char c; | |
2564 | segT seg; | |
2565 | ||
2566 | SKIP_WHITESPACE (); | |
2567 | ||
2568 | name = input_line_pointer; | |
2569 | c = get_symbol_end (); | |
2570 | ||
2571 | name = xstrdup (name); | |
2572 | ||
2573 | *input_line_pointer = c; | |
2574 | ||
2575 | seg = subseg_new (name, 0); | |
2576 | ||
2577 | if (*input_line_pointer != ',') | |
2578 | *type = 'C'; | |
2579 | else | |
2580 | { | |
2581 | char *sectype; | |
2582 | ||
2583 | ++input_line_pointer; | |
2584 | SKIP_WHITESPACE (); | |
2585 | sectype = input_line_pointer; | |
2586 | c = get_symbol_end (); | |
2587 | if (*sectype == '\0') | |
2588 | *type = 'C'; | |
2589 | else if (strcasecmp (sectype, "text") == 0) | |
2590 | *type = 'C'; | |
2591 | else if (strcasecmp (sectype, "data") == 0) | |
2592 | *type = 'D'; | |
2593 | else if (strcasecmp (sectype, "romdata") == 0) | |
2594 | *type = 'R'; | |
2595 | else | |
2596 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2597 | *input_line_pointer = c; | |
2598 | } | |
2599 | ||
2600 | if (*input_line_pointer == ',') | |
2601 | { | |
2602 | char *seccmd; | |
2603 | ||
2604 | ++input_line_pointer; | |
2605 | SKIP_WHITESPACE (); | |
2606 | seccmd = input_line_pointer; | |
2607 | c = get_symbol_end (); | |
2608 | if (strcasecmp (seccmd, "absolute") == 0) | |
2609 | { | |
2610 | as_bad (_("absolute sections are not supported")); | |
2611 | *input_line_pointer = c; | |
2612 | ignore_rest_of_line (); | |
2613 | return; | |
2614 | } | |
2615 | else if (strcasecmp (seccmd, "align") == 0) | |
2616 | { | |
2617 | int align; | |
2618 | ||
2619 | *input_line_pointer = c; | |
2620 | align = get_absolute_expression (); | |
2621 | record_alignment (seg, align); | |
2622 | } | |
2623 | else | |
2624 | { | |
2625 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2626 | *input_line_pointer = c; | |
2627 | } | |
2628 | } | |
2629 | ||
041ff4dd | 2630 | demand_empty_rest_of_line (); |
252b5132 RH |
2631 | |
2632 | #else /* ! TC_I960 */ | |
2633 | /* The MRI assembler seems to use different forms of .sect for | |
2634 | different targets. */ | |
2635 | as_bad ("MRI mode not supported for this target"); | |
2636 | ignore_rest_of_line (); | |
2637 | #endif /* ! TC_I960 */ | |
2638 | #endif /* ! TC_M68K */ | |
2639 | } | |
2640 | ||
2641 | /* Handle the .print pseudo-op. */ | |
2642 | ||
2643 | void | |
39e6acbd | 2644 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2645 | { |
2646 | char *s; | |
2647 | int len; | |
2648 | ||
2649 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
2650 | if (s != NULL) |
2651 | printf ("%s\n", s); | |
252b5132 RH |
2652 | demand_empty_rest_of_line (); |
2653 | } | |
2654 | ||
2655 | /* Handle the .purgem pseudo-op. */ | |
2656 | ||
2657 | void | |
39e6acbd | 2658 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2659 | { |
2660 | if (is_it_end_of_statement ()) | |
2661 | { | |
2662 | demand_empty_rest_of_line (); | |
2663 | return; | |
2664 | } | |
2665 | ||
2666 | do | |
2667 | { | |
2668 | char *name; | |
2669 | char c; | |
2670 | ||
2671 | SKIP_WHITESPACE (); | |
2672 | name = input_line_pointer; | |
2673 | c = get_symbol_end (); | |
2674 | delete_macro (name); | |
2675 | *input_line_pointer = c; | |
2676 | SKIP_WHITESPACE (); | |
2677 | } | |
2678 | while (*input_line_pointer++ == ','); | |
2679 | ||
2680 | --input_line_pointer; | |
2681 | demand_empty_rest_of_line (); | |
2682 | } | |
2683 | ||
057f53c1 | 2684 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 2685 | |
057f53c1 JB |
2686 | static void |
2687 | s_bad_end (int endr) | |
7f28ab9d | 2688 | { |
057f53c1 JB |
2689 | as_warn (_(".end%c encountered without preceeding %s"), |
2690 | endr ? 'r' : 'm', | |
2691 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
2692 | demand_empty_rest_of_line (); |
2693 | } | |
2694 | ||
2695 | /* Handle the .rept pseudo-op. */ | |
2696 | ||
252b5132 | 2697 | void |
39e6acbd | 2698 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2699 | { |
2700 | int count; | |
252b5132 RH |
2701 | |
2702 | count = get_absolute_expression (); | |
2703 | ||
041ff4dd | 2704 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2705 | } |
2706 | ||
2707 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2708 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2709 | |
2710 | void | |
39e6acbd | 2711 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
2712 | { |
2713 | sb one; | |
2714 | sb many; | |
2715 | ||
252b5132 | 2716 | sb_new (&one); |
041ff4dd | 2717 | if (!buffer_and_nest (start, end, &one, get_line_sb)) |
252b5132 | 2718 | { |
6dc19fc4 | 2719 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2720 | return; |
2721 | } | |
2722 | ||
2723 | sb_new (&many); | |
2724 | while (count-- > 0) | |
2725 | sb_add_sb (&many, &one); | |
2726 | ||
2727 | sb_kill (&one); | |
2728 | ||
9f10757c | 2729 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2730 | sb_kill (&many); |
2731 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2732 | } | |
2733 | ||
6dc19fc4 TW |
2734 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
2735 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 2736 | are properly nested. |
6dc19fc4 TW |
2737 | |
2738 | This function makes it easier to implement a premature "break" out of the | |
2739 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 2740 | such as line substitutions. */ |
6dc19fc4 TW |
2741 | |
2742 | void | |
39e6acbd | 2743 | end_repeat (int extra) |
6dc19fc4 TW |
2744 | { |
2745 | cond_exit_macro (macro_nest); | |
2746 | while (extra-- >= 0) | |
2747 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2748 | } | |
2749 | ||
be95a9c1 AM |
2750 | static void |
2751 | assign_symbol (const char *name, int no_reassign) | |
2752 | { | |
2753 | symbolS *symbolP; | |
2754 | ||
2755 | if (name[0] == '.' && name[1] == '\0') | |
2756 | { | |
2757 | /* Turn '. = mumble' into a .org mumble. */ | |
2758 | segT segment; | |
2759 | expressionS exp; | |
2760 | ||
2761 | segment = get_known_segmented_expression (&exp); | |
2762 | ||
2763 | if (!need_pass_2) | |
2764 | do_org (segment, &exp, 0); | |
2765 | ||
2766 | return; | |
2767 | } | |
2768 | ||
2769 | if ((symbolP = symbol_find (name)) == NULL | |
2770 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2771 | { | |
2772 | symbolP = symbol_find_or_make (name); | |
2773 | #ifndef NO_LISTING | |
2774 | /* When doing symbol listings, play games with dummy fragments living | |
2775 | outside the normal fragment chain to record the file and line info | |
2776 | for this symbol. */ | |
2777 | if (listing & LISTING_SYMBOLS) | |
2778 | { | |
2779 | extern struct list_info_struct *listing_tail; | |
2780 | fragS *dummy_frag = (fragS *) xcalloc (sizeof (fragS)); | |
2781 | dummy_frag->line = listing_tail; | |
2782 | dummy_frag->fr_symbol = symbolP; | |
2783 | symbol_set_frag (symbolP, dummy_frag); | |
2784 | } | |
2785 | #endif | |
2786 | #if defined (OBJ_COFF) || defined (OBJ_MAYBE_COFF) | |
2787 | #if defined (BFD_ASSEMBLER) && defined (OBJ_MAYBE_COFF) | |
2788 | if (OUTPUT_FLAVOR == bfd_target_coff_flavour) | |
2789 | #endif | |
2790 | /* "set" symbols are local unless otherwise specified. */ | |
2791 | SF_SET_LOCAL (symbolP); | |
2792 | #endif | |
2793 | } | |
2794 | ||
2795 | /* Permit register names to be redefined. */ | |
2796 | if (no_reassign | |
2797 | && S_IS_DEFINED (symbolP) | |
2798 | && S_GET_SEGMENT (symbolP) != reg_section) | |
2799 | as_bad (_("symbol `%s' is already defined"), name); | |
2800 | ||
2801 | pseudo_set (symbolP); | |
2802 | ||
2803 | demand_empty_rest_of_line (); | |
2804 | } | |
2805 | ||
252b5132 RH |
2806 | /* Handle the .equ, .equiv and .set directives. If EQUIV is 1, then |
2807 | this is .equiv, and it is an error if the symbol is already | |
2808 | defined. */ | |
2809 | ||
041ff4dd | 2810 | void |
39e6acbd | 2811 | s_set (int equiv) |
252b5132 | 2812 | { |
be95a9c1 AM |
2813 | char *name; |
2814 | char delim; | |
2815 | char *end_name; | |
252b5132 | 2816 | |
041ff4dd NC |
2817 | /* Especial apologies for the random logic: |
2818 | this just grew, and could be parsed much more simply! | |
2819 | Dean in haste. */ | |
252b5132 RH |
2820 | name = input_line_pointer; |
2821 | delim = get_symbol_end (); | |
2822 | end_name = input_line_pointer; | |
0e389e77 | 2823 | *end_name = delim; |
409d19c4 | 2824 | |
0e389e77 | 2825 | if (name == end_name) |
409d19c4 AM |
2826 | { |
2827 | as_bad (_("expected symbol name")); | |
409d19c4 AM |
2828 | discard_rest_of_line (); |
2829 | return; | |
2830 | } | |
2831 | ||
252b5132 RH |
2832 | SKIP_WHITESPACE (); |
2833 | ||
2834 | if (*input_line_pointer != ',') | |
2835 | { | |
2836 | *end_name = 0; | |
0e389e77 | 2837 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2838 | *end_name = delim; |
2839 | ignore_rest_of_line (); | |
2840 | return; | |
2841 | } | |
2842 | ||
2843 | input_line_pointer++; | |
2844 | *end_name = 0; | |
2845 | ||
be95a9c1 | 2846 | assign_symbol (name, equiv); |
252b5132 | 2847 | *end_name = delim; |
041ff4dd | 2848 | } |
252b5132 | 2849 | |
041ff4dd | 2850 | void |
39e6acbd | 2851 | s_space (int mult) |
252b5132 RH |
2852 | { |
2853 | expressionS exp; | |
2854 | expressionS val; | |
2855 | char *p = 0; | |
2856 | char *stop = NULL; | |
2857 | char stopc; | |
2858 | int bytes; | |
2859 | ||
2860 | #ifdef md_flush_pending_output | |
2861 | md_flush_pending_output (); | |
2862 | #endif | |
2863 | ||
2864 | if (flag_mri) | |
2865 | stop = mri_comment_field (&stopc); | |
2866 | ||
2867 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
2868 | this is ds.b. */ | |
2869 | if (flag_m68k_mri && mult > 1) | |
2870 | { | |
2871 | if (now_seg == absolute_section) | |
2872 | { | |
2873 | abs_section_offset += abs_section_offset & 1; | |
2874 | if (line_label != NULL) | |
2875 | S_SET_VALUE (line_label, abs_section_offset); | |
2876 | } | |
2877 | else if (mri_common_symbol != NULL) | |
2878 | { | |
2879 | valueT val; | |
2880 | ||
2881 | val = S_GET_VALUE (mri_common_symbol); | |
2882 | if ((val & 1) != 0) | |
2883 | { | |
2884 | S_SET_VALUE (mri_common_symbol, val + 1); | |
2885 | if (line_label != NULL) | |
2886 | { | |
2b47531b ILT |
2887 | expressionS *symexp; |
2888 | ||
2889 | symexp = symbol_get_value_expression (line_label); | |
2890 | know (symexp->X_op == O_symbol); | |
2891 | know (symexp->X_add_symbol == mri_common_symbol); | |
2892 | symexp->X_add_number += 1; | |
252b5132 RH |
2893 | } |
2894 | } | |
2895 | } | |
2896 | else | |
2897 | { | |
2898 | do_align (1, (char *) NULL, 0, 0); | |
2899 | if (line_label != NULL) | |
2900 | { | |
2b47531b | 2901 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
2902 | S_SET_VALUE (line_label, frag_now_fix ()); |
2903 | } | |
2904 | } | |
2905 | } | |
2906 | ||
2907 | bytes = mult; | |
2908 | ||
2909 | expression (&exp); | |
2910 | ||
2911 | SKIP_WHITESPACE (); | |
2912 | if (*input_line_pointer == ',') | |
2913 | { | |
2914 | ++input_line_pointer; | |
2915 | expression (&val); | |
2916 | } | |
2917 | else | |
2918 | { | |
2919 | val.X_op = O_constant; | |
2920 | val.X_add_number = 0; | |
2921 | } | |
2922 | ||
2923 | if (val.X_op != O_constant | |
2924 | || val.X_add_number < - 0x80 | |
2925 | || val.X_add_number > 0xff | |
2926 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
2927 | { | |
2928 | if (exp.X_op != O_constant) | |
0e389e77 | 2929 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
2930 | else |
2931 | { | |
2932 | offsetT i; | |
2933 | ||
2934 | if (mult == 0) | |
2935 | mult = 1; | |
2936 | bytes = mult * exp.X_add_number; | |
2937 | for (i = 0; i < exp.X_add_number; i++) | |
2938 | emit_expr (&val, mult); | |
2939 | } | |
2940 | } | |
2941 | else | |
2942 | { | |
2943 | if (exp.X_op == O_constant) | |
2944 | { | |
2945 | long repeat; | |
2946 | ||
2947 | repeat = exp.X_add_number; | |
2948 | if (mult) | |
2949 | repeat *= mult; | |
2950 | bytes = repeat; | |
2951 | if (repeat <= 0) | |
2952 | { | |
2d150871 RO |
2953 | if (!flag_mri) |
2954 | as_warn (_(".space repeat count is zero, ignored")); | |
2955 | else if (repeat < 0) | |
252b5132 RH |
2956 | as_warn (_(".space repeat count is negative, ignored")); |
2957 | goto getout; | |
2958 | } | |
2959 | ||
2960 | /* If we are in the absolute section, just bump the offset. */ | |
2961 | if (now_seg == absolute_section) | |
2962 | { | |
2963 | abs_section_offset += repeat; | |
2964 | goto getout; | |
2965 | } | |
2966 | ||
2967 | /* If we are secretly in an MRI common section, then | |
2968 | creating space just increases the size of the common | |
2969 | symbol. */ | |
2970 | if (mri_common_symbol != NULL) | |
2971 | { | |
2972 | S_SET_VALUE (mri_common_symbol, | |
2973 | S_GET_VALUE (mri_common_symbol) + repeat); | |
2974 | goto getout; | |
2975 | } | |
2976 | ||
2977 | if (!need_pass_2) | |
2978 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
2979 | (offsetT) repeat, (char *) 0); | |
2980 | } | |
2981 | else | |
2982 | { | |
2983 | if (now_seg == absolute_section) | |
2984 | { | |
2985 | as_bad (_("space allocation too complex in absolute section")); | |
2986 | subseg_set (text_section, 0); | |
2987 | } | |
f0e652b4 | 2988 | |
252b5132 RH |
2989 | if (mri_common_symbol != NULL) |
2990 | { | |
2991 | as_bad (_("space allocation too complex in common section")); | |
2992 | mri_common_symbol = NULL; | |
2993 | } | |
f0e652b4 | 2994 | |
252b5132 RH |
2995 | if (!need_pass_2) |
2996 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
2997 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
2998 | } | |
2999 | ||
3000 | if (p) | |
3001 | *p = val.X_add_number; | |
3002 | } | |
3003 | ||
3004 | getout: | |
3005 | ||
3006 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3007 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3008 | or dcb.b. */ | |
3009 | if (flag_mri && (bytes & 1) != 0) | |
3010 | mri_pending_align = 1; | |
3011 | ||
3012 | demand_empty_rest_of_line (); | |
3013 | ||
3014 | if (flag_mri) | |
3015 | mri_comment_end (stop, stopc); | |
3016 | } | |
3017 | ||
3018 | /* This is like s_space, but the value is a floating point number with | |
3019 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3020 | friends. */ | |
3021 | ||
3022 | void | |
39e6acbd | 3023 | s_float_space (int float_type) |
252b5132 RH |
3024 | { |
3025 | offsetT count; | |
3026 | int flen; | |
3027 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3028 | char *stop = NULL; | |
3029 | char stopc; | |
3030 | ||
3031 | if (flag_mri) | |
3032 | stop = mri_comment_field (&stopc); | |
3033 | ||
3034 | count = get_absolute_expression (); | |
3035 | ||
3036 | SKIP_WHITESPACE (); | |
3037 | if (*input_line_pointer != ',') | |
3038 | { | |
3039 | as_bad (_("missing value")); | |
3040 | ignore_rest_of_line (); | |
3041 | if (flag_mri) | |
3042 | mri_comment_end (stop, stopc); | |
3043 | return; | |
3044 | } | |
3045 | ||
3046 | ++input_line_pointer; | |
3047 | ||
3048 | SKIP_WHITESPACE (); | |
3049 | ||
3050 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3051 | * letter is legal. */ | |
3052 | if (input_line_pointer[0] == '0' | |
3882b010 | 3053 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3054 | input_line_pointer += 2; |
3055 | ||
3056 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3057 | with the exact digits specified. */ | |
3058 | if (input_line_pointer[0] == ':') | |
3059 | { | |
3060 | flen = hex_float (float_type, temp); | |
3061 | if (flen < 0) | |
3062 | { | |
3063 | ignore_rest_of_line (); | |
3064 | if (flag_mri) | |
3065 | mri_comment_end (stop, stopc); | |
3066 | return; | |
3067 | } | |
3068 | } | |
3069 | else | |
3070 | { | |
3071 | char *err; | |
3072 | ||
3073 | err = md_atof (float_type, temp, &flen); | |
3074 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3075 | know (flen > 0); | |
3076 | if (err) | |
3077 | { | |
0e389e77 | 3078 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3079 | ignore_rest_of_line (); |
3080 | if (flag_mri) | |
3081 | mri_comment_end (stop, stopc); | |
3082 | return; | |
3083 | } | |
3084 | } | |
3085 | ||
3086 | while (--count >= 0) | |
3087 | { | |
3088 | char *p; | |
3089 | ||
3090 | p = frag_more (flen); | |
3091 | memcpy (p, temp, (unsigned int) flen); | |
3092 | } | |
3093 | ||
3094 | demand_empty_rest_of_line (); | |
3095 | ||
3096 | if (flag_mri) | |
3097 | mri_comment_end (stop, stopc); | |
3098 | } | |
3099 | ||
3100 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3101 | ||
3102 | void | |
39e6acbd | 3103 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3104 | { |
3105 | char *stop = NULL; | |
3106 | char stopc; | |
3107 | ||
3108 | if (flag_mri) | |
3109 | stop = mri_comment_field (&stopc); | |
3110 | abs_section_offset = get_absolute_expression (); | |
3111 | subseg_set (absolute_section, 0); | |
3112 | demand_empty_rest_of_line (); | |
3113 | if (flag_mri) | |
3114 | mri_comment_end (stop, stopc); | |
3115 | } | |
3116 | ||
3117 | void | |
39e6acbd | 3118 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3119 | { |
3120 | register int temp; | |
3121 | ||
3122 | temp = get_absolute_expression (); | |
3123 | subseg_set (text_section, (subsegT) temp); | |
3124 | demand_empty_rest_of_line (); | |
3125 | #ifdef OBJ_VMS | |
3126 | const_flag &= ~IN_DEFAULT_SECTION; | |
3127 | #endif | |
041ff4dd | 3128 | } |
252b5132 | 3129 | \f |
c95b35a9 NS |
3130 | |
3131 | /* Verify that we are at the end of a line. If not, issue an error and | |
3132 | skip to EOL. */ | |
3133 | ||
041ff4dd | 3134 | void |
39e6acbd | 3135 | demand_empty_rest_of_line (void) |
252b5132 RH |
3136 | { |
3137 | SKIP_WHITESPACE (); | |
3138 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3139 | input_line_pointer++; |
252b5132 | 3140 | else |
252b5132 | 3141 | { |
3882b010 | 3142 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3143 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3144 | *input_line_pointer); |
252b5132 | 3145 | else |
c95b35a9 | 3146 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3147 | *input_line_pointer); |
c95b35a9 | 3148 | ignore_rest_of_line (); |
252b5132 | 3149 | } |
c95b35a9 NS |
3150 | |
3151 | /* Return pointing just after end-of-line. */ | |
3152 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3153 | } | |
3154 | ||
3155 | /* Silently advance to the end of line. Use this after already having | |
3156 | issued an error about something bad. */ | |
3157 | ||
3158 | void | |
3159 | ignore_rest_of_line (void) | |
3160 | { | |
3161 | while (input_line_pointer < buffer_limit | |
3162 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3163 | input_line_pointer++; | |
f0e652b4 | 3164 | |
041ff4dd NC |
3165 | input_line_pointer++; |
3166 | ||
3167 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3168 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3169 | } | |
3170 | ||
3171 | void | |
39e6acbd | 3172 | discard_rest_of_line (void) |
252b5132 RH |
3173 | { |
3174 | while (input_line_pointer < buffer_limit | |
041ff4dd NC |
3175 | && !is_end_of_line[(unsigned char) *input_line_pointer]) |
3176 | input_line_pointer++; | |
3177 | ||
3178 | input_line_pointer++; | |
f0e652b4 | 3179 | |
041ff4dd | 3180 | /* Return pointing just after end-of-line. */ |
252b5132 RH |
3181 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3182 | } | |
3183 | ||
be95a9c1 AM |
3184 | /* Sets frag for given symbol to zero_address_frag, except when the |
3185 | symbol frag is already set to a dummy listing frag. */ | |
3186 | ||
3187 | static void | |
3188 | set_zero_frag (symbolS *symbolP) | |
3189 | { | |
3190 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3191 | symbol_set_frag (symbolP, &zero_address_frag); | |
3192 | } | |
3193 | ||
041ff4dd | 3194 | /* In: Pointer to a symbol. |
d6415f6c | 3195 | Input_line_pointer->expression. |
f0e652b4 | 3196 | |
041ff4dd | 3197 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3198 | Tried to set symbol to value of expression. |
3199 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3200 | |
252b5132 | 3201 | void |
39e6acbd | 3202 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3203 | { |
3204 | expressionS exp; | |
be95a9c1 | 3205 | segT seg; |
252b5132 RH |
3206 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
3207 | int ext; | |
3208 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3209 | ||
041ff4dd | 3210 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3211 | |
ce34c373 | 3212 | (void) expression (&exp); |
252b5132 RH |
3213 | |
3214 | if (exp.X_op == O_illegal) | |
0e389e77 | 3215 | as_bad (_("illegal expression")); |
252b5132 | 3216 | else if (exp.X_op == O_absent) |
0e389e77 | 3217 | as_bad (_("missing expression")); |
252b5132 RH |
3218 | else if (exp.X_op == O_big) |
3219 | { | |
3220 | if (exp.X_add_number > 0) | |
0e389e77 | 3221 | as_bad (_("bignum invalid")); |
252b5132 | 3222 | else |
0e389e77 | 3223 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3224 | } |
3225 | else if (exp.X_op == O_subtract | |
252b5132 | 3226 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3227 | && (symbol_get_frag (exp.X_add_symbol) |
3228 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3229 | { |
3230 | exp.X_op = O_constant; | |
3231 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3232 | - S_GET_VALUE (exp.X_op_symbol)); | |
3233 | } | |
3234 | ||
be95a9c1 AM |
3235 | if (symbol_section_p (symbolP)) |
3236 | { | |
3237 | as_bad ("attempt to set value of section symbol"); | |
3238 | return; | |
3239 | } | |
3240 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3241 | ext = S_IS_EXTERNAL (symbolP); | |
3242 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3243 | ||
252b5132 RH |
3244 | switch (exp.X_op) |
3245 | { | |
3246 | case O_illegal: | |
3247 | case O_absent: | |
3248 | case O_big: | |
3249 | exp.X_add_number = 0; | |
3250 | /* Fall through. */ | |
3251 | case O_constant: | |
3252 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3253 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3254 | set_zero_frag (symbolP); |
252b5132 RH |
3255 | break; |
3256 | ||
3257 | case O_register: | |
3258 | S_SET_SEGMENT (symbolP, reg_section); | |
3259 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3260 | set_zero_frag (symbolP); |
252b5132 RH |
3261 | break; |
3262 | ||
3263 | case O_symbol: | |
be95a9c1 AM |
3264 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3265 | /* For x=undef+const, create an expression symbol. | |
3266 | For x=x+const, just update x except when x is an undefined symbol | |
3267 | For x=defined+const, evaluate x. */ | |
3268 | if (symbolP == exp.X_add_symbol | |
3269 | && (seg != undefined_section | |
3270 | || !symbol_constant_p (symbolP))) | |
3271 | { | |
3272 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3273 | break; | |
3274 | } | |
3275 | else if (seg != undefined_section) | |
252b5132 RH |
3276 | { |
3277 | symbolS *s = exp.X_add_symbol; | |
3278 | ||
be95a9c1 AM |
3279 | S_SET_SEGMENT (symbolP, seg); |
3280 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3281 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3282 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3283 | break; |
252b5132 | 3284 | } |
be95a9c1 | 3285 | /* Fall thru */ |
252b5132 RH |
3286 | |
3287 | default: | |
ce34c373 | 3288 | /* The value is some complex expression. |
be95a9c1 AM |
3289 | Set segment and frag back to that of a newly created symbol. */ |
3290 | S_SET_SEGMENT (symbolP, undefined_section); | |
2b47531b | 3291 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3292 | set_zero_frag (symbolP); |
252b5132 RH |
3293 | break; |
3294 | } | |
be95a9c1 AM |
3295 | |
3296 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3297 | if (ext) | |
3298 | S_SET_EXTERNAL (symbolP); | |
3299 | else | |
3300 | S_CLEAR_EXTERNAL (symbolP); | |
3301 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
252b5132 RH |
3302 | } |
3303 | \f | |
d6415f6c | 3304 | /* cons() |
f0e652b4 | 3305 | |
041ff4dd NC |
3306 | CONStruct more frag of .bytes, or .words etc. |
3307 | Should need_pass_2 be 1 then emit no frag(s). | |
3308 | This understands EXPRESSIONS. | |
f0e652b4 | 3309 | |
041ff4dd | 3310 | Bug (?) |
f0e652b4 | 3311 | |
041ff4dd NC |
3312 | This has a split personality. We use expression() to read the |
3313 | value. We can detect if the value won't fit in a byte or word. | |
3314 | But we can't detect if expression() discarded significant digits | |
3315 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3316 | |
3317 | /* Select a parser for cons expressions. */ | |
3318 | ||
3319 | /* Some targets need to parse the expression in various fancy ways. | |
3320 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3321 | (for example, the HPPA does this). Otherwise, you can define | |
3322 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3323 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3324 | are defined, which is the normal case, then only simple expressions | |
3325 | are permitted. */ | |
3326 | ||
abd63a32 | 3327 | #ifdef TC_M68K |
252b5132 | 3328 | static void |
39e6acbd | 3329 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3330 | #endif |
252b5132 RH |
3331 | |
3332 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3333 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3334 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3335 | static void |
39e6acbd | 3336 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3337 | #endif |
3338 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3339 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3340 | static void | |
39e6acbd | 3341 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3342 | #endif |
3343 | ||
3344 | /* If we haven't gotten one yet, just call expression. */ | |
3345 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3346 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3347 | #endif | |
3348 | #endif | |
3349 | ||
cdfbf930 | 3350 | void |
b41b1f95 L |
3351 | do_parse_cons_expression (expressionS *exp, |
3352 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3353 | { |
3354 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3355 | } | |
3356 | ||
3357 | ||
041ff4dd NC |
3358 | /* Worker to do .byte etc statements. |
3359 | Clobbers input_line_pointer and checks end-of-line. */ | |
3360 | ||
3361 | static void | |
39e6acbd KH |
3362 | cons_worker (register int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
3363 | int rva) | |
252b5132 RH |
3364 | { |
3365 | int c; | |
3366 | expressionS exp; | |
3367 | char *stop = NULL; | |
3368 | char stopc; | |
3369 | ||
3370 | #ifdef md_flush_pending_output | |
3371 | md_flush_pending_output (); | |
3372 | #endif | |
3373 | ||
3374 | if (flag_mri) | |
3375 | stop = mri_comment_field (&stopc); | |
3376 | ||
3377 | if (is_it_end_of_statement ()) | |
3378 | { | |
3379 | demand_empty_rest_of_line (); | |
3380 | if (flag_mri) | |
3381 | mri_comment_end (stop, stopc); | |
3382 | return; | |
3383 | } | |
3384 | ||
cc1bc22a AM |
3385 | #ifdef TC_ADDRESS_BYTES |
3386 | if (nbytes == 0) | |
3387 | nbytes = TC_ADDRESS_BYTES (); | |
3388 | #endif | |
3389 | ||
252b5132 RH |
3390 | #ifdef md_cons_align |
3391 | md_cons_align (nbytes); | |
3392 | #endif | |
3393 | ||
3394 | c = 0; | |
3395 | do | |
3396 | { | |
abd63a32 | 3397 | #ifdef TC_M68K |
252b5132 RH |
3398 | if (flag_m68k_mri) |
3399 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3400 | else | |
abd63a32 | 3401 | #endif |
252b5132 RH |
3402 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
3403 | ||
3404 | if (rva) | |
3405 | { | |
3406 | if (exp.X_op == O_symbol) | |
3407 | exp.X_op = O_symbol_rva; | |
3408 | else | |
3409 | as_fatal (_("rva without symbol")); | |
3410 | } | |
3411 | emit_expr (&exp, (unsigned int) nbytes); | |
3412 | ++c; | |
3413 | } | |
3414 | while (*input_line_pointer++ == ','); | |
3415 | ||
3416 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3417 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3418 | or dcb.b. */ | |
3419 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3420 | mri_pending_align = 1; | |
3421 | ||
041ff4dd | 3422 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3423 | |
3424 | demand_empty_rest_of_line (); | |
3425 | ||
3426 | if (flag_mri) | |
3427 | mri_comment_end (stop, stopc); | |
3428 | } | |
3429 | ||
252b5132 | 3430 | void |
39e6acbd | 3431 | cons (int size) |
252b5132 RH |
3432 | { |
3433 | cons_worker (size, 0); | |
3434 | } | |
3435 | ||
041ff4dd | 3436 | void |
39e6acbd | 3437 | s_rva (int size) |
252b5132 RH |
3438 | { |
3439 | cons_worker (size, 1); | |
3440 | } | |
3441 | ||
3442 | /* Put the contents of expression EXP into the object file using | |
3443 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
3444 | ||
3445 | void | |
39e6acbd | 3446 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
3447 | { |
3448 | operatorT op; | |
3449 | register char *p; | |
3450 | valueT extra_digit = 0; | |
3451 | ||
3452 | /* Don't do anything if we are going to make another pass. */ | |
3453 | if (need_pass_2) | |
3454 | return; | |
3455 | ||
ed7d5d1a AM |
3456 | dot_value = frag_now_fix (); |
3457 | ||
252b5132 RH |
3458 | #ifndef NO_LISTING |
3459 | #ifdef OBJ_ELF | |
3460 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
3461 | appear as a four byte positive constant in the .line section, | |
3462 | followed by a 2 byte 0xffff. Look for that case here. */ | |
3463 | { | |
3464 | static int dwarf_line = -1; | |
3465 | ||
3466 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
3467 | dwarf_line = -1; | |
3468 | else if (dwarf_line >= 0 | |
3469 | && nbytes == 2 | |
3470 | && exp->X_op == O_constant | |
3471 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
3472 | listing_source_line ((unsigned int) dwarf_line); | |
3473 | else if (nbytes == 4 | |
3474 | && exp->X_op == O_constant | |
3475 | && exp->X_add_number >= 0) | |
3476 | dwarf_line = exp->X_add_number; | |
3477 | else | |
3478 | dwarf_line = -1; | |
3479 | } | |
3480 | ||
3481 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
3482 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
3483 | AT_sibling (0x12) followed by a four byte address of the sibling | |
3484 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
3485 | file. We look for that case here. */ | |
3486 | { | |
3487 | static int dwarf_file = 0; | |
3488 | ||
3489 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
3490 | dwarf_file = 0; | |
3491 | else if (dwarf_file == 0 | |
3492 | && nbytes == 2 | |
3493 | && exp->X_op == O_constant | |
3494 | && exp->X_add_number == 0x11) | |
3495 | dwarf_file = 1; | |
3496 | else if (dwarf_file == 1 | |
3497 | && nbytes == 2 | |
3498 | && exp->X_op == O_constant | |
3499 | && exp->X_add_number == 0x12) | |
3500 | dwarf_file = 2; | |
3501 | else if (dwarf_file == 2 | |
3502 | && nbytes == 4) | |
3503 | dwarf_file = 3; | |
3504 | else if (dwarf_file == 3 | |
3505 | && nbytes == 2 | |
3506 | && exp->X_op == O_constant | |
3507 | && exp->X_add_number == 0x38) | |
3508 | dwarf_file = 4; | |
3509 | else | |
3510 | dwarf_file = 0; | |
3511 | ||
3512 | /* The variable dwarf_file_string tells stringer that the string | |
3513 | may be the name of the source file. */ | |
3514 | if (dwarf_file == 4) | |
3515 | dwarf_file_string = 1; | |
3516 | else | |
3517 | dwarf_file_string = 0; | |
3518 | } | |
3519 | #endif | |
3520 | #endif | |
3521 | ||
3522 | if (check_eh_frame (exp, &nbytes)) | |
3523 | return; | |
3524 | ||
3525 | op = exp->X_op; | |
3526 | ||
3527 | /* Allow `.word 0' in the absolute section. */ | |
3528 | if (now_seg == absolute_section) | |
3529 | { | |
3530 | if (op != O_constant || exp->X_add_number != 0) | |
3531 | as_bad (_("attempt to store value in absolute section")); | |
3532 | abs_section_offset += nbytes; | |
3533 | return; | |
3534 | } | |
3535 | ||
3536 | /* Handle a negative bignum. */ | |
3537 | if (op == O_uminus | |
3538 | && exp->X_add_number == 0 | |
2b47531b ILT |
3539 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
3540 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
3541 | { |
3542 | int i; | |
3543 | unsigned long carry; | |
3544 | ||
2b47531b | 3545 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
3546 | |
3547 | /* Negate the bignum: one's complement each digit and add 1. */ | |
3548 | carry = 1; | |
3549 | for (i = 0; i < exp->X_add_number; i++) | |
3550 | { | |
3551 | unsigned long next; | |
3552 | ||
041ff4dd | 3553 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
3554 | & LITTLENUM_MASK) |
3555 | + carry); | |
3556 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3557 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3558 | } | |
3559 | ||
3560 | /* We can ignore any carry out, because it will be handled by | |
3561 | extra_digit if it is needed. */ | |
3562 | ||
3563 | extra_digit = (valueT) -1; | |
3564 | op = O_big; | |
3565 | } | |
3566 | ||
3567 | if (op == O_absent || op == O_illegal) | |
3568 | { | |
3569 | as_warn (_("zero assumed for missing expression")); | |
3570 | exp->X_add_number = 0; | |
3571 | op = O_constant; | |
3572 | } | |
3573 | else if (op == O_big && exp->X_add_number <= 0) | |
3574 | { | |
0e389e77 | 3575 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3576 | exp->X_add_number = 0; |
3577 | op = O_constant; | |
3578 | } | |
3579 | else if (op == O_register) | |
3580 | { | |
3581 | as_warn (_("register value used as expression")); | |
3582 | op = O_constant; | |
3583 | } | |
3584 | ||
3585 | p = frag_more ((int) nbytes); | |
3586 | ||
3587 | #ifndef WORKING_DOT_WORD | |
3588 | /* If we have the difference of two symbols in a word, save it on | |
3589 | the broken_words list. See the code in write.c. */ | |
3590 | if (op == O_subtract && nbytes == 2) | |
3591 | { | |
3592 | struct broken_word *x; | |
3593 | ||
3594 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3595 | x->next_broken_word = broken_words; | |
3596 | broken_words = x; | |
3597 | x->seg = now_seg; | |
3598 | x->subseg = now_subseg; | |
3599 | x->frag = frag_now; | |
3600 | x->word_goes_here = p; | |
3601 | x->dispfrag = 0; | |
3602 | x->add = exp->X_add_symbol; | |
3603 | x->sub = exp->X_op_symbol; | |
3604 | x->addnum = exp->X_add_number; | |
3605 | x->added = 0; | |
dc59a897 | 3606 | x->use_jump = 0; |
252b5132 RH |
3607 | new_broken_words++; |
3608 | return; | |
3609 | } | |
3610 | #endif | |
3611 | ||
3612 | /* If we have an integer, but the number of bytes is too large to | |
3613 | pass to md_number_to_chars, handle it as a bignum. */ | |
3614 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3615 | { | |
e5604d79 RS |
3616 | extra_digit = exp->X_unsigned ? 0 : -1; |
3617 | convert_to_bignum (exp); | |
3618 | op = O_big; | |
252b5132 RH |
3619 | } |
3620 | ||
3621 | if (op == O_constant) | |
3622 | { | |
3623 | register valueT get; | |
3624 | register valueT use; | |
3625 | register valueT mask; | |
3626 | valueT hibit; | |
3627 | register valueT unmask; | |
3628 | ||
3629 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 3630 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
3631 | if (nbytes >= sizeof (valueT)) |
3632 | { | |
3633 | mask = 0; | |
3634 | if (nbytes > sizeof (valueT)) | |
3635 | hibit = 0; | |
3636 | else | |
3637 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3638 | } | |
3639 | else | |
3640 | { | |
041ff4dd | 3641 | /* Don't store these bits. */ |
252b5132 RH |
3642 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
3643 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3644 | } | |
3645 | ||
041ff4dd | 3646 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
3647 | |
3648 | #ifdef NEVER | |
3649 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 3650 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
3651 | #endif |
3652 | ||
3653 | get = exp->X_add_number; | |
3654 | use = get & unmask; | |
3655 | if ((get & mask) != 0 | |
3656 | && ((get & mask) != mask | |
3657 | || (get & hibit) == 0)) | |
041ff4dd | 3658 | { /* Leading bits contain both 0s & 1s. */ |
0e389e77 | 3659 | as_warn (_("value 0x%lx truncated to 0x%lx"), |
252b5132 RH |
3660 | (unsigned long) get, (unsigned long) use); |
3661 | } | |
041ff4dd | 3662 | /* Put bytes in right order. */ |
252b5132 RH |
3663 | md_number_to_chars (p, use, (int) nbytes); |
3664 | } | |
3665 | else if (op == O_big) | |
3666 | { | |
3667 | unsigned int size; | |
3668 | LITTLENUM_TYPE *nums; | |
3669 | ||
3670 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
3671 | ||
3672 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
3673 | if (nbytes < size) | |
3674 | { | |
0e389e77 | 3675 | as_warn (_("bignum truncated to %d bytes"), nbytes); |
252b5132 RH |
3676 | size = nbytes; |
3677 | } | |
3678 | ||
3679 | if (target_big_endian) | |
3680 | { | |
3681 | while (nbytes > size) | |
3682 | { | |
3683 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3684 | nbytes -= CHARS_PER_LITTLENUM; | |
3685 | p += CHARS_PER_LITTLENUM; | |
3686 | } | |
3687 | ||
3688 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 3689 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3690 | { |
3691 | --nums; | |
3692 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3693 | size -= CHARS_PER_LITTLENUM; | |
3694 | p += CHARS_PER_LITTLENUM; | |
3695 | } | |
3696 | } | |
3697 | else | |
3698 | { | |
3699 | nums = generic_bignum; | |
ceac3f62 | 3700 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3701 | { |
3702 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3703 | ++nums; | |
3704 | size -= CHARS_PER_LITTLENUM; | |
3705 | p += CHARS_PER_LITTLENUM; | |
3706 | nbytes -= CHARS_PER_LITTLENUM; | |
3707 | } | |
3708 | ||
ceac3f62 | 3709 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3710 | { |
3711 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3712 | nbytes -= CHARS_PER_LITTLENUM; | |
3713 | p += CHARS_PER_LITTLENUM; | |
3714 | } | |
3715 | } | |
3716 | } | |
3717 | else | |
3718 | { | |
3719 | memset (p, 0, nbytes); | |
3720 | ||
3721 | /* Now we need to generate a fixS to record the symbol value. | |
3722 | This is easy for BFD. For other targets it can be more | |
3723 | complex. For very complex cases (currently, the HPPA and | |
3724 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
3725 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
3726 | the name of the reloc code that should be stored in the fixS. | |
3727 | If neither is defined, the code uses NO_RELOC if it is | |
3728 | defined, and otherwise uses 0. */ | |
3729 | ||
3730 | #ifdef BFD_ASSEMBLER | |
3731 | #ifdef TC_CONS_FIX_NEW | |
3732 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3733 | #else | |
3734 | { | |
3735 | bfd_reloc_code_real_type r; | |
3736 | ||
3737 | switch (nbytes) | |
3738 | { | |
3739 | case 1: | |
3740 | r = BFD_RELOC_8; | |
3741 | break; | |
3742 | case 2: | |
3743 | r = BFD_RELOC_16; | |
3744 | break; | |
3745 | case 4: | |
3746 | r = BFD_RELOC_32; | |
3747 | break; | |
3748 | case 8: | |
3749 | r = BFD_RELOC_64; | |
3750 | break; | |
3751 | default: | |
3752 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
3753 | r = BFD_RELOC_32; | |
3754 | break; | |
3755 | } | |
3756 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, | |
3757 | 0, r); | |
3758 | } | |
3759 | #endif | |
3760 | #else | |
3761 | #ifdef TC_CONS_FIX_NEW | |
3762 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3763 | #else | |
3764 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
3765 | it is defined, otherwise use NO_RELOC if it is defined, | |
3766 | otherwise use 0. */ | |
3767 | #ifndef TC_CONS_RELOC | |
3768 | #ifdef NO_RELOC | |
3769 | #define TC_CONS_RELOC NO_RELOC | |
3770 | #else | |
3771 | #define TC_CONS_RELOC 0 | |
3772 | #endif | |
3773 | #endif | |
3774 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, | |
3775 | TC_CONS_RELOC); | |
3776 | #endif /* TC_CONS_FIX_NEW */ | |
3777 | #endif /* BFD_ASSEMBLER */ | |
3778 | } | |
3779 | } | |
3780 | \f | |
3781 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3782 | ||
3783 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
3784 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3785 | then pack them all together. We do a little better in that we allow | |
3786 | them in words, longs, etc. and we'll pack them in target byte order | |
3787 | for you. | |
3788 | ||
47eebc20 | 3789 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
3790 | entirely fit, put it in the next unit. Overflowing the bitfield is |
3791 | explicitly *not* even a warning. The bitwidth should be considered | |
3792 | a "mask". | |
3793 | ||
3794 | To use this function the tc-XXX.h file should define | |
3795 | BITFIELD_CONS_EXPRESSIONS. */ | |
3796 | ||
041ff4dd | 3797 | static void |
252b5132 RH |
3798 | parse_bitfield_cons (exp, nbytes) |
3799 | expressionS *exp; | |
3800 | unsigned int nbytes; | |
3801 | { | |
3802 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3803 | char *hold = input_line_pointer; | |
3804 | ||
3805 | (void) expression (exp); | |
3806 | ||
3807 | if (*input_line_pointer == ':') | |
041ff4dd NC |
3808 | { |
3809 | /* Bitfields. */ | |
252b5132 RH |
3810 | long value = 0; |
3811 | ||
3812 | for (;;) | |
3813 | { | |
3814 | unsigned long width; | |
3815 | ||
3816 | if (*input_line_pointer != ':') | |
3817 | { | |
3818 | input_line_pointer = hold; | |
3819 | break; | |
041ff4dd | 3820 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
3821 | |
3822 | /* In the general case, we can't allow | |
3823 | full expressions with symbol | |
3824 | differences and such. The relocation | |
3825 | entries for symbols not defined in this | |
3826 | assembly would require arbitrary field | |
3827 | widths, positions, and masks which most | |
3828 | of our current object formats don't | |
3829 | support. | |
3830 | ||
3831 | In the specific case where a symbol | |
3832 | *is* defined in this assembly, we | |
3833 | *could* build fixups and track it, but | |
3834 | this could lead to confusion for the | |
3835 | backends. I'm lazy. I'll take any | |
3836 | SEG_ABSOLUTE. I think that means that | |
3837 | you can use a previous .set or | |
041ff4dd | 3838 | .equ type symbol. xoxorich. */ |
252b5132 RH |
3839 | |
3840 | if (exp->X_op == O_absent) | |
3841 | { | |
3842 | as_warn (_("using a bit field width of zero")); | |
3843 | exp->X_add_number = 0; | |
3844 | exp->X_op = O_constant; | |
041ff4dd | 3845 | } /* Implied zero width bitfield. */ |
252b5132 RH |
3846 | |
3847 | if (exp->X_op != O_constant) | |
3848 | { | |
3849 | *input_line_pointer = '\0'; | |
3850 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
3851 | *input_line_pointer = ':'; | |
3852 | demand_empty_rest_of_line (); | |
3853 | return; | |
041ff4dd | 3854 | } /* Too complex. */ |
252b5132 RH |
3855 | |
3856 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
3857 | { | |
3858 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
3859 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
3860 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 3861 | } /* Too big. */ |
252b5132 RH |
3862 | |
3863 | if (width > bits_available) | |
3864 | { | |
3865 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
3866 | input_line_pointer = hold; | |
3867 | exp->X_add_number = value; | |
3868 | break; | |
041ff4dd | 3869 | } /* Won't fit. */ |
252b5132 | 3870 | |
ef99799a KH |
3871 | /* Skip ':'. */ |
3872 | hold = ++input_line_pointer; | |
252b5132 RH |
3873 | |
3874 | (void) expression (exp); | |
3875 | if (exp->X_op != O_constant) | |
3876 | { | |
3877 | char cache = *input_line_pointer; | |
3878 | ||
3879 | *input_line_pointer = '\0'; | |
3880 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
3881 | *input_line_pointer = cache; | |
3882 | demand_empty_rest_of_line (); | |
3883 | return; | |
041ff4dd | 3884 | } /* Too complex. */ |
252b5132 RH |
3885 | |
3886 | value |= ((~(-1 << width) & exp->X_add_number) | |
3887 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
3888 | ||
3889 | if ((bits_available -= width) == 0 | |
3890 | || is_it_end_of_statement () | |
3891 | || *input_line_pointer != ',') | |
3892 | { | |
3893 | break; | |
041ff4dd | 3894 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
3895 | |
3896 | hold = ++input_line_pointer; | |
3897 | (void) expression (exp); | |
041ff4dd | 3898 | } |
252b5132 RH |
3899 | |
3900 | exp->X_add_number = value; | |
3901 | exp->X_op = O_constant; | |
3902 | exp->X_unsigned = 1; | |
041ff4dd NC |
3903 | } |
3904 | } | |
252b5132 RH |
3905 | |
3906 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
3907 | \f | |
3908 | /* Handle an MRI style string expression. */ | |
3909 | ||
abd63a32 | 3910 | #ifdef TC_M68K |
252b5132 RH |
3911 | static void |
3912 | parse_mri_cons (exp, nbytes) | |
3913 | expressionS *exp; | |
3914 | unsigned int nbytes; | |
3915 | { | |
3916 | if (*input_line_pointer != '\'' | |
3917 | && (input_line_pointer[1] != '\'' | |
3918 | || (*input_line_pointer != 'A' | |
3919 | && *input_line_pointer != 'E'))) | |
3920 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3921 | else | |
3922 | { | |
3923 | unsigned int scan; | |
3924 | unsigned int result = 0; | |
3925 | ||
3926 | /* An MRI style string. Cut into as many bytes as will fit into | |
3927 | a nbyte chunk, left justify if necessary, and separate with | |
3928 | commas so we can try again later. */ | |
3929 | if (*input_line_pointer == 'A') | |
3930 | ++input_line_pointer; | |
3931 | else if (*input_line_pointer == 'E') | |
3932 | { | |
3933 | as_bad (_("EBCDIC constants are not supported")); | |
3934 | ++input_line_pointer; | |
3935 | } | |
3936 | ||
3937 | input_line_pointer++; | |
3938 | for (scan = 0; scan < nbytes; scan++) | |
3939 | { | |
3940 | if (*input_line_pointer == '\'') | |
3941 | { | |
3942 | if (input_line_pointer[1] == '\'') | |
3943 | { | |
3944 | input_line_pointer++; | |
3945 | } | |
3946 | else | |
3947 | break; | |
3948 | } | |
3949 | result = (result << 8) | (*input_line_pointer++); | |
3950 | } | |
3951 | ||
041ff4dd | 3952 | /* Left justify. */ |
252b5132 RH |
3953 | while (scan < nbytes) |
3954 | { | |
3955 | result <<= 8; | |
3956 | scan++; | |
3957 | } | |
f0e652b4 | 3958 | |
041ff4dd | 3959 | /* Create correct expression. */ |
252b5132 RH |
3960 | exp->X_op = O_constant; |
3961 | exp->X_add_number = result; | |
f0e652b4 | 3962 | |
041ff4dd | 3963 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
3964 | if (input_line_pointer[0] != '\'' || |
3965 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
3966 | { | |
3967 | input_line_pointer -= 2; | |
3968 | input_line_pointer[0] = ','; | |
3969 | input_line_pointer[1] = '\''; | |
3970 | } | |
3971 | else | |
3972 | input_line_pointer++; | |
3973 | } | |
3974 | } | |
abd63a32 | 3975 | #endif /* TC_M68K */ |
252b5132 RH |
3976 | \f |
3977 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3978 | ||
3979 | /* Parse a repeat expression for cons. This is used by the MIPS | |
3980 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
3981 | object file COUNT times. | |
3982 | ||
3983 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
3984 | ||
3985 | static void | |
3986 | parse_repeat_cons (exp, nbytes) | |
3987 | expressionS *exp; | |
3988 | unsigned int nbytes; | |
3989 | { | |
3990 | expressionS count; | |
3991 | register int i; | |
3992 | ||
3993 | expression (exp); | |
3994 | ||
3995 | if (*input_line_pointer != ':') | |
3996 | { | |
3997 | /* No repeat count. */ | |
3998 | return; | |
3999 | } | |
4000 | ||
4001 | ++input_line_pointer; | |
4002 | expression (&count); | |
4003 | if (count.X_op != O_constant | |
4004 | || count.X_add_number <= 0) | |
4005 | { | |
0e389e77 | 4006 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4007 | return; |
4008 | } | |
4009 | ||
4010 | /* The cons function is going to output this expression once. So we | |
4011 | output it count - 1 times. */ | |
4012 | for (i = count.X_add_number - 1; i > 0; i--) | |
4013 | emit_expr (exp, nbytes); | |
4014 | } | |
4015 | ||
4016 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4017 | \f | |
4018 | /* Parse a floating point number represented as a hex constant. This | |
4019 | permits users to specify the exact bits they want in the floating | |
4020 | point number. */ | |
4021 | ||
4022 | static int | |
39e6acbd | 4023 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4024 | { |
4025 | int length; | |
4026 | int i; | |
4027 | ||
4028 | switch (float_type) | |
4029 | { | |
4030 | case 'f': | |
4031 | case 'F': | |
4032 | case 's': | |
4033 | case 'S': | |
4034 | length = 4; | |
4035 | break; | |
4036 | ||
4037 | case 'd': | |
4038 | case 'D': | |
4039 | case 'r': | |
4040 | case 'R': | |
4041 | length = 8; | |
4042 | break; | |
4043 | ||
4044 | case 'x': | |
4045 | case 'X': | |
4046 | length = 12; | |
4047 | break; | |
4048 | ||
4049 | case 'p': | |
4050 | case 'P': | |
4051 | length = 12; | |
4052 | break; | |
4053 | ||
4054 | default: | |
0e389e77 | 4055 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4056 | return -1; |
4057 | } | |
4058 | ||
4059 | /* It would be nice if we could go through expression to parse the | |
4060 | hex constant, but if we get a bignum it's a pain to sort it into | |
4061 | the buffer correctly. */ | |
4062 | i = 0; | |
4063 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4064 | { | |
4065 | int d; | |
4066 | ||
4067 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4068 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4069 | if (*input_line_pointer == '_') |
4070 | { | |
4071 | ++input_line_pointer; | |
4072 | continue; | |
4073 | } | |
4074 | ||
4075 | if (i >= length) | |
4076 | { | |
0e389e77 | 4077 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4078 | return -1; |
4079 | } | |
4080 | d = hex_value (*input_line_pointer) << 4; | |
4081 | ++input_line_pointer; | |
4082 | while (*input_line_pointer == '_') | |
4083 | ++input_line_pointer; | |
4084 | if (hex_p (*input_line_pointer)) | |
4085 | { | |
4086 | d += hex_value (*input_line_pointer); | |
4087 | ++input_line_pointer; | |
4088 | } | |
4089 | if (target_big_endian) | |
4090 | bytes[i] = d; | |
4091 | else | |
4092 | bytes[length - i - 1] = d; | |
4093 | ++i; | |
4094 | } | |
4095 | ||
4096 | if (i < length) | |
4097 | { | |
4098 | if (target_big_endian) | |
4099 | memset (bytes + i, 0, length - i); | |
4100 | else | |
4101 | memset (bytes, 0, length - i); | |
4102 | } | |
4103 | ||
4104 | return length; | |
4105 | } | |
4106 | ||
d6415f6c | 4107 | /* float_cons() |
f0e652b4 | 4108 | |
041ff4dd NC |
4109 | CONStruct some more frag chars of .floats .ffloats etc. |
4110 | Makes 0 or more new frags. | |
4111 | If need_pass_2 == 1, no frags are emitted. | |
4112 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4113 | |
041ff4dd NC |
4114 | A floating constant is defined by atof_generic(), except it is preceded |
4115 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4116 | reading, I decided to be incompatible. This always tries to give you | |
4117 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4118 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4119 | a choice of 2 flavours of noise according to which of 2 floating-point |
4120 | scanners you directed AS to use. | |
f0e652b4 | 4121 | |
041ff4dd | 4122 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4123 | |
4124 | void | |
39e6acbd KH |
4125 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
4126 | register int float_type /* 'f':.ffloat ... 'F':.float ... */) | |
252b5132 RH |
4127 | { |
4128 | register char *p; | |
041ff4dd NC |
4129 | int length; /* Number of chars in an object. */ |
4130 | register char *err; /* Error from scanning floating literal. */ | |
252b5132 RH |
4131 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4132 | ||
4133 | if (is_it_end_of_statement ()) | |
4134 | { | |
4135 | demand_empty_rest_of_line (); | |
4136 | return; | |
4137 | } | |
4138 | ||
4139 | #ifdef md_flush_pending_output | |
4140 | md_flush_pending_output (); | |
4141 | #endif | |
4142 | ||
4143 | do | |
4144 | { | |
041ff4dd | 4145 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4146 | SKIP_WHITESPACE (); |
4147 | ||
4148 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4149 | letter is legal. Someone may invent a "z" format and this routine |
4150 | has no use for such information. Lusers beware: you get | |
4151 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4152 | if (input_line_pointer[0] == '0' |
3882b010 | 4153 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4154 | input_line_pointer += 2; |
4155 | ||
4156 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4157 | point with the exact digits specified. */ |
252b5132 RH |
4158 | if (input_line_pointer[0] == ':') |
4159 | { | |
4160 | ++input_line_pointer; | |
4161 | length = hex_float (float_type, temp); | |
4162 | if (length < 0) | |
4163 | { | |
4164 | ignore_rest_of_line (); | |
4165 | return; | |
4166 | } | |
4167 | } | |
4168 | else | |
4169 | { | |
4170 | err = md_atof (float_type, temp, &length); | |
4171 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
4172 | know (length > 0); | |
4173 | if (err) | |
4174 | { | |
0e389e77 | 4175 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4176 | ignore_rest_of_line (); |
4177 | return; | |
4178 | } | |
4179 | } | |
4180 | ||
4181 | if (!need_pass_2) | |
4182 | { | |
4183 | int count; | |
4184 | ||
4185 | count = 1; | |
4186 | ||
4187 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4188 | if (*input_line_pointer == ':') | |
4189 | { | |
4190 | expressionS count_exp; | |
4191 | ||
4192 | ++input_line_pointer; | |
4193 | expression (&count_exp); | |
f0e652b4 | 4194 | |
252b5132 RH |
4195 | if (count_exp.X_op != O_constant |
4196 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4197 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4198 | else |
4199 | count = count_exp.X_add_number; | |
4200 | } | |
4201 | #endif | |
4202 | ||
4203 | while (--count >= 0) | |
4204 | { | |
4205 | p = frag_more (length); | |
4206 | memcpy (p, temp, (unsigned int) length); | |
4207 | } | |
4208 | } | |
4209 | SKIP_WHITESPACE (); | |
4210 | } | |
4211 | while (*input_line_pointer++ == ','); | |
4212 | ||
041ff4dd NC |
4213 | /* Put terminator back into stream. */ |
4214 | --input_line_pointer; | |
252b5132 | 4215 | demand_empty_rest_of_line (); |
041ff4dd | 4216 | } |
252b5132 | 4217 | \f |
041ff4dd | 4218 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4219 | |
4220 | static inline int | |
39e6acbd | 4221 | sizeof_sleb128 (offsetT value) |
252b5132 RH |
4222 | { |
4223 | register int size = 0; | |
4224 | register unsigned byte; | |
4225 | ||
4226 | do | |
4227 | { | |
4228 | byte = (value & 0x7f); | |
4229 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4230 | Fortunately, we can structure things so that the extra work reduces | |
4231 | to a noop on systems that do things "properly". */ | |
4232 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4233 | size += 1; | |
4234 | } | |
4235 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4236 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4237 | ||
4238 | return size; | |
4239 | } | |
4240 | ||
4241 | static inline int | |
39e6acbd | 4242 | sizeof_uleb128 (valueT value) |
252b5132 RH |
4243 | { |
4244 | register int size = 0; | |
4245 | register unsigned byte; | |
4246 | ||
4247 | do | |
4248 | { | |
4249 | byte = (value & 0x7f); | |
4250 | value >>= 7; | |
4251 | size += 1; | |
4252 | } | |
4253 | while (value != 0); | |
4254 | ||
4255 | return size; | |
4256 | } | |
4257 | ||
4258 | int | |
39e6acbd | 4259 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4260 | { |
4261 | if (sign) | |
4262 | return sizeof_sleb128 ((offsetT) value); | |
4263 | else | |
4264 | return sizeof_uleb128 (value); | |
4265 | } | |
4266 | ||
4267 | /* Output a LEB128 value. */ | |
4268 | ||
4269 | static inline int | |
39e6acbd | 4270 | output_sleb128 (char *p, offsetT value) |
252b5132 RH |
4271 | { |
4272 | register char *orig = p; | |
4273 | register int more; | |
4274 | ||
4275 | do | |
4276 | { | |
4277 | unsigned byte = (value & 0x7f); | |
4278 | ||
4279 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4280 | Fortunately, we can structure things so that the extra work reduces | |
4281 | to a noop on systems that do things "properly". */ | |
4282 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4283 | ||
4284 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4285 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4286 | if (more) | |
4287 | byte |= 0x80; | |
4288 | ||
4289 | *p++ = byte; | |
4290 | } | |
4291 | while (more); | |
4292 | ||
4293 | return p - orig; | |
4294 | } | |
4295 | ||
4296 | static inline int | |
39e6acbd | 4297 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4298 | { |
4299 | char *orig = p; | |
4300 | ||
4301 | do | |
4302 | { | |
4303 | unsigned byte = (value & 0x7f); | |
4304 | value >>= 7; | |
4305 | if (value != 0) | |
4306 | /* More bytes to follow. */ | |
4307 | byte |= 0x80; | |
4308 | ||
4309 | *p++ = byte; | |
4310 | } | |
4311 | while (value != 0); | |
4312 | ||
4313 | return p - orig; | |
4314 | } | |
4315 | ||
4316 | int | |
39e6acbd | 4317 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4318 | { |
4319 | if (sign) | |
4320 | return output_sleb128 (p, (offsetT) value); | |
4321 | else | |
4322 | return output_uleb128 (p, value); | |
4323 | } | |
4324 | ||
4325 | /* Do the same for bignums. We combine sizeof with output here in that | |
4326 | we don't output for NULL values of P. It isn't really as critical as | |
4327 | for "normal" values that this be streamlined. */ | |
4328 | ||
6d4d30bb | 4329 | static inline int |
39e6acbd | 4330 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4331 | { |
4332 | char *orig = p; | |
4333 | valueT val = 0; | |
4334 | int loaded = 0; | |
4335 | unsigned byte; | |
4336 | ||
4337 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4338 | while (size > 1 |
4339 | && bignum[size - 1] == LITTLENUM_MASK | |
4340 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4341 | size--; |
4342 | ||
4343 | do | |
4344 | { | |
e5604d79 RS |
4345 | /* OR in the next part of the littlenum. */ |
4346 | val |= (*bignum << loaded); | |
4347 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4348 | size--; | |
4349 | bignum++; | |
4350 | ||
4351 | /* Add bytes until there are less than 7 bits left in VAL | |
4352 | or until every non-sign bit has been written. */ | |
4353 | do | |
252b5132 | 4354 | { |
e5604d79 RS |
4355 | byte = val & 0x7f; |
4356 | loaded -= 7; | |
4357 | val >>= 7; | |
4358 | if (size > 0 | |
4359 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 4360 | byte |= 0x80; |
e5604d79 RS |
4361 | |
4362 | if (orig) | |
4363 | *p = byte; | |
4364 | p++; | |
252b5132 | 4365 | } |
e5604d79 RS |
4366 | while ((byte & 0x80) != 0 && loaded >= 7); |
4367 | } | |
4368 | while (size > 0); | |
252b5132 | 4369 | |
e5604d79 RS |
4370 | /* Mop up any left-over bits (of which there will be less than 7). */ |
4371 | if ((byte & 0x80) != 0) | |
4372 | { | |
4373 | /* Sign-extend VAL. */ | |
4374 | if (val & (1 << (loaded - 1))) | |
4375 | val |= ~0 << loaded; | |
252b5132 | 4376 | if (orig) |
e5604d79 | 4377 | *p = val & 0x7f; |
252b5132 RH |
4378 | p++; |
4379 | } | |
252b5132 RH |
4380 | |
4381 | return p - orig; | |
4382 | } | |
4383 | ||
6d4d30bb | 4384 | static inline int |
39e6acbd | 4385 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4386 | { |
4387 | char *orig = p; | |
4388 | valueT val = 0; | |
4389 | int loaded = 0; | |
4390 | unsigned byte; | |
4391 | ||
4392 | /* Strip leading zeros off the bignum. */ | |
4393 | /* XXX: Is this needed? */ | |
041ff4dd | 4394 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4395 | size--; |
4396 | ||
4397 | do | |
4398 | { | |
4399 | if (loaded < 7 && size > 0) | |
4400 | { | |
4401 | val |= (*bignum << loaded); | |
4402 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4403 | size--; | |
4404 | bignum++; | |
4405 | } | |
4406 | ||
4407 | byte = val & 0x7f; | |
4408 | loaded -= 7; | |
4409 | val >>= 7; | |
4410 | ||
4411 | if (size > 0 || val) | |
4412 | byte |= 0x80; | |
4413 | ||
4414 | if (orig) | |
4415 | *p = byte; | |
4416 | p++; | |
4417 | } | |
4418 | while (byte & 0x80); | |
4419 | ||
4420 | return p - orig; | |
4421 | } | |
4422 | ||
6d4d30bb | 4423 | static int |
39e6acbd | 4424 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
4425 | { |
4426 | if (sign) | |
4427 | return output_big_sleb128 (p, bignum, size); | |
4428 | else | |
4429 | return output_big_uleb128 (p, bignum, size); | |
4430 | } | |
4431 | ||
4432 | /* Generate the appropriate fragments for a given expression to emit a | |
4433 | leb128 value. */ | |
4434 | ||
4435 | void | |
39e6acbd | 4436 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
4437 | { |
4438 | operatorT op = exp->X_op; | |
b7712f8d | 4439 | unsigned int nbytes; |
252b5132 RH |
4440 | |
4441 | if (op == O_absent || op == O_illegal) | |
4442 | { | |
4443 | as_warn (_("zero assumed for missing expression")); | |
4444 | exp->X_add_number = 0; | |
4445 | op = O_constant; | |
4446 | } | |
4447 | else if (op == O_big && exp->X_add_number <= 0) | |
4448 | { | |
0e389e77 | 4449 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4450 | exp->X_add_number = 0; |
4451 | op = O_constant; | |
4452 | } | |
4453 | else if (op == O_register) | |
4454 | { | |
4455 | as_warn (_("register value used as expression")); | |
4456 | op = O_constant; | |
4457 | } | |
e5604d79 RS |
4458 | else if (op == O_constant |
4459 | && sign | |
4460 | && (exp->X_add_number < 0) != !exp->X_unsigned) | |
4461 | { | |
4462 | /* We're outputting a signed leb128 and the sign of X_add_number | |
4463 | doesn't reflect the sign of the original value. Convert EXP | |
4464 | to a correctly-extended bignum instead. */ | |
4465 | convert_to_bignum (exp); | |
4466 | op = O_big; | |
4467 | } | |
252b5132 | 4468 | |
67a659f6 RH |
4469 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
4470 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 4471 | nbytes = (unsigned int) -1; |
67a659f6 RH |
4472 | if (check_eh_frame (exp, &nbytes)) |
4473 | abort (); | |
4474 | ||
371b7465 RH |
4475 | /* Let the backend know that subsequent data may be byte aligned. */ |
4476 | #ifdef md_cons_align | |
4477 | md_cons_align (1); | |
4478 | #endif | |
4479 | ||
252b5132 RH |
4480 | if (op == O_constant) |
4481 | { | |
4482 | /* If we've got a constant, emit the thing directly right now. */ | |
4483 | ||
4484 | valueT value = exp->X_add_number; | |
4485 | int size; | |
4486 | char *p; | |
4487 | ||
4488 | size = sizeof_leb128 (value, sign); | |
4489 | p = frag_more (size); | |
4490 | output_leb128 (p, value, sign); | |
4491 | } | |
4492 | else if (op == O_big) | |
4493 | { | |
4494 | /* O_big is a different sort of constant. */ | |
4495 | ||
4496 | int size; | |
4497 | char *p; | |
4498 | ||
4499 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
4500 | p = frag_more (size); | |
4501 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
4502 | } | |
4503 | else | |
4504 | { | |
041ff4dd | 4505 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
4506 | resolve things later. */ |
4507 | ||
041ff4dd | 4508 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
4509 | make_expr_symbol (exp), 0, (char *) NULL); |
4510 | } | |
4511 | } | |
4512 | ||
4513 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
4514 | ||
4515 | void | |
39e6acbd | 4516 | s_leb128 (int sign) |
252b5132 RH |
4517 | { |
4518 | expressionS exp; | |
4519 | ||
00bbdfe7 BW |
4520 | #ifdef md_flush_pending_output |
4521 | md_flush_pending_output (); | |
4522 | #endif | |
4523 | ||
041ff4dd NC |
4524 | do |
4525 | { | |
4526 | expression (&exp); | |
4527 | emit_leb128_expr (&exp, sign); | |
4528 | } | |
4529 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
4530 | |
4531 | input_line_pointer--; | |
4532 | demand_empty_rest_of_line (); | |
4533 | } | |
4534 | \f | |
041ff4dd NC |
4535 | /* We read 0 or more ',' separated, double-quoted strings. |
4536 | Caller should have checked need_pass_2 is FALSE because we don't | |
4537 | check it. */ | |
4538 | ||
4539 | void | |
39e6acbd KH |
4540 | stringer (/* Worker to do .ascii etc statements. */ |
4541 | /* Checks end-of-line. */ | |
4542 | register int append_zero /* 0: don't append '\0', else 1. */) | |
252b5132 RH |
4543 | { |
4544 | register unsigned int c; | |
4545 | char *start; | |
4546 | ||
4547 | #ifdef md_flush_pending_output | |
4548 | md_flush_pending_output (); | |
4549 | #endif | |
4550 | ||
041ff4dd NC |
4551 | /* The following awkward logic is to parse ZERO or more strings, |
4552 | comma separated. Recall a string expression includes spaces | |
4553 | before the opening '\"' and spaces after the closing '\"'. | |
4554 | We fake a leading ',' if there is (supposed to be) | |
4555 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
4556 | if (is_it_end_of_statement ()) |
4557 | { | |
041ff4dd NC |
4558 | c = 0; /* Skip loop. */ |
4559 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
4560 | } |
4561 | else | |
4562 | { | |
041ff4dd | 4563 | c = ','; /* Do loop. */ |
252b5132 | 4564 | } |
8ac9ba6c NC |
4565 | /* If we have been switched into the abs_section then we |
4566 | will not have an obstack onto which we can hang strings. */ | |
4567 | if (now_seg == absolute_section) | |
4568 | { | |
4569 | as_bad (_("strings must be placed into a section")); | |
4570 | c = 0; | |
4571 | ignore_rest_of_line (); | |
4572 | } | |
d6415f6c | 4573 | |
252b5132 RH |
4574 | while (c == ',' || c == '<' || c == '"') |
4575 | { | |
4576 | SKIP_WHITESPACE (); | |
4577 | switch (*input_line_pointer) | |
4578 | { | |
4579 | case '\"': | |
041ff4dd | 4580 | ++input_line_pointer; /*->1st char of string. */ |
252b5132 RH |
4581 | start = input_line_pointer; |
4582 | while (is_a_char (c = next_char_of_string ())) | |
4583 | { | |
4584 | FRAG_APPEND_1_CHAR (c); | |
4585 | } | |
4586 | if (append_zero) | |
4587 | { | |
4588 | FRAG_APPEND_1_CHAR (0); | |
4589 | } | |
4590 | know (input_line_pointer[-1] == '\"'); | |
4591 | ||
4592 | #ifndef NO_LISTING | |
4593 | #ifdef OBJ_ELF | |
4594 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | |
d6415f6c AM |
4595 | will emit .string with a filename in the .debug section |
4596 | after a sequence of constants. See the comment in | |
4597 | emit_expr for the sequence. emit_expr will set | |
4598 | dwarf_file_string to non-zero if this string might be a | |
4599 | source file name. */ | |
252b5132 RH |
4600 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
4601 | dwarf_file_string = 0; | |
4602 | else if (dwarf_file_string) | |
4603 | { | |
4604 | c = input_line_pointer[-1]; | |
4605 | input_line_pointer[-1] = '\0'; | |
4606 | listing_source_file (start); | |
4607 | input_line_pointer[-1] = c; | |
4608 | } | |
4609 | #endif | |
4610 | #endif | |
4611 | ||
4612 | break; | |
4613 | case '<': | |
4614 | input_line_pointer++; | |
4615 | c = get_single_number (); | |
4616 | FRAG_APPEND_1_CHAR (c); | |
4617 | if (*input_line_pointer != '>') | |
4618 | { | |
0e389e77 | 4619 | as_bad (_("expected <nn>")); |
252b5132 RH |
4620 | } |
4621 | input_line_pointer++; | |
4622 | break; | |
4623 | case ',': | |
4624 | input_line_pointer++; | |
4625 | break; | |
4626 | } | |
4627 | SKIP_WHITESPACE (); | |
4628 | c = *input_line_pointer; | |
4629 | } | |
4630 | ||
4631 | demand_empty_rest_of_line (); | |
4632 | } /* stringer() */ | |
4633 | \f | |
4634 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
4635 | high bits set. We'll probably also have trouble with | |
4636 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 4637 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 4638 | |
041ff4dd | 4639 | unsigned int |
39e6acbd | 4640 | next_char_of_string (void) |
252b5132 RH |
4641 | { |
4642 | register unsigned int c; | |
4643 | ||
4644 | c = *input_line_pointer++ & CHAR_MASK; | |
4645 | switch (c) | |
4646 | { | |
4647 | case '\"': | |
4648 | c = NOT_A_CHAR; | |
4649 | break; | |
4650 | ||
4651 | case '\n': | |
0e389e77 | 4652 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4653 | bump_line_counters (); |
4654 | break; | |
4655 | ||
4656 | #ifndef NO_STRING_ESCAPES | |
4657 | case '\\': | |
4658 | switch (c = *input_line_pointer++) | |
4659 | { | |
4660 | case 'b': | |
4661 | c = '\b'; | |
4662 | break; | |
4663 | ||
4664 | case 'f': | |
4665 | c = '\f'; | |
4666 | break; | |
4667 | ||
4668 | case 'n': | |
4669 | c = '\n'; | |
4670 | break; | |
4671 | ||
4672 | case 'r': | |
4673 | c = '\r'; | |
4674 | break; | |
4675 | ||
4676 | case 't': | |
4677 | c = '\t'; | |
4678 | break; | |
4679 | ||
4680 | case 'v': | |
4681 | c = '\013'; | |
4682 | break; | |
4683 | ||
4684 | case '\\': | |
4685 | case '"': | |
041ff4dd | 4686 | break; /* As itself. */ |
252b5132 RH |
4687 | |
4688 | case '0': | |
4689 | case '1': | |
4690 | case '2': | |
4691 | case '3': | |
4692 | case '4': | |
4693 | case '5': | |
4694 | case '6': | |
4695 | case '7': | |
4696 | case '8': | |
4697 | case '9': | |
4698 | { | |
4699 | long number; | |
4700 | int i; | |
4701 | ||
041ff4dd | 4702 | for (i = 0, number = 0; |
3882b010 | 4703 | ISDIGIT (c) && i < 3; |
041ff4dd | 4704 | c = *input_line_pointer++, i++) |
252b5132 RH |
4705 | { |
4706 | number = number * 8 + c - '0'; | |
4707 | } | |
f0e652b4 | 4708 | |
252b5132 RH |
4709 | c = number & 0xff; |
4710 | } | |
4711 | --input_line_pointer; | |
4712 | break; | |
4713 | ||
4714 | case 'x': | |
4715 | case 'X': | |
4716 | { | |
4717 | long number; | |
4718 | ||
4719 | number = 0; | |
4720 | c = *input_line_pointer++; | |
3882b010 | 4721 | while (ISXDIGIT (c)) |
252b5132 | 4722 | { |
3882b010 | 4723 | if (ISDIGIT (c)) |
252b5132 | 4724 | number = number * 16 + c - '0'; |
3882b010 | 4725 | else if (ISUPPER (c)) |
252b5132 RH |
4726 | number = number * 16 + c - 'A' + 10; |
4727 | else | |
4728 | number = number * 16 + c - 'a' + 10; | |
4729 | c = *input_line_pointer++; | |
4730 | } | |
4731 | c = number & 0xff; | |
4732 | --input_line_pointer; | |
4733 | } | |
4734 | break; | |
4735 | ||
4736 | case '\n': | |
041ff4dd | 4737 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 4738 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4739 | c = '\n'; |
4740 | bump_line_counters (); | |
4741 | break; | |
4742 | ||
4743 | default: | |
4744 | ||
4745 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 4746 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
4747 | c = '?'; |
4748 | #endif /* ONLY_STANDARD_ESCAPES */ | |
4749 | ||
4750 | break; | |
041ff4dd | 4751 | } |
252b5132 RH |
4752 | break; |
4753 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
4754 | ||
4755 | default: | |
4756 | break; | |
041ff4dd | 4757 | } |
252b5132 | 4758 | return (c); |
041ff4dd | 4759 | } |
252b5132 RH |
4760 | \f |
4761 | static segT | |
39e6acbd | 4762 | get_segmented_expression (register expressionS *expP) |
252b5132 RH |
4763 | { |
4764 | register segT retval; | |
4765 | ||
4766 | retval = expression (expP); | |
4767 | if (expP->X_op == O_illegal | |
4768 | || expP->X_op == O_absent | |
4769 | || expP->X_op == O_big) | |
4770 | { | |
0e389e77 | 4771 | as_bad (_("expected address expression")); |
252b5132 RH |
4772 | expP->X_op = O_constant; |
4773 | expP->X_add_number = 0; | |
4774 | retval = absolute_section; | |
4775 | } | |
4776 | return retval; | |
4777 | } | |
4778 | ||
041ff4dd | 4779 | static segT |
39e6acbd | 4780 | get_known_segmented_expression (register expressionS *expP) |
252b5132 RH |
4781 | { |
4782 | register segT retval; | |
4783 | ||
4784 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
4785 | { | |
4786 | /* There is no easy way to extract the undefined symbol from the | |
4787 | expression. */ | |
4788 | if (expP->X_add_symbol != NULL | |
4789 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
4790 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
4791 | S_GET_NAME (expP->X_add_symbol)); | |
4792 | else | |
4793 | as_warn (_("some symbol undefined; zero assumed")); | |
4794 | retval = absolute_section; | |
4795 | expP->X_op = O_constant; | |
4796 | expP->X_add_number = 0; | |
4797 | } | |
4798 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
4799 | return (retval); | |
041ff4dd | 4800 | } |
252b5132 RH |
4801 | |
4802 | offsetT | |
39e6acbd | 4803 | get_absolute_expr (expressionS *exp) |
252b5132 | 4804 | { |
a0ea3e1d AM |
4805 | expression (exp); |
4806 | if (exp->X_op != O_constant) | |
252b5132 | 4807 | { |
a0ea3e1d | 4808 | if (exp->X_op != O_absent) |
0e389e77 | 4809 | as_bad (_("bad or irreducible absolute expression")); |
a0ea3e1d | 4810 | exp->X_add_number = 0; |
252b5132 | 4811 | } |
a0ea3e1d AM |
4812 | return exp->X_add_number; |
4813 | } | |
4814 | ||
4815 | offsetT | |
39e6acbd | 4816 | get_absolute_expression (void) |
a0ea3e1d AM |
4817 | { |
4818 | expressionS exp; | |
4819 | ||
4820 | return get_absolute_expr (&exp); | |
252b5132 RH |
4821 | } |
4822 | ||
041ff4dd | 4823 | char /* Return terminator. */ |
39e6acbd | 4824 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
4825 | { |
4826 | /* FIXME: val_pointer should probably be offsetT *. */ | |
4827 | *val_pointer = (long) get_absolute_expression (); | |
4828 | return (*input_line_pointer++); | |
4829 | } | |
4830 | \f | |
041ff4dd NC |
4831 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
4832 | Give a warning if that happens. */ | |
4833 | ||
252b5132 | 4834 | char * |
39e6acbd | 4835 | demand_copy_C_string (int *len_pointer) |
252b5132 RH |
4836 | { |
4837 | register char *s; | |
4838 | ||
4839 | if ((s = demand_copy_string (len_pointer)) != 0) | |
4840 | { | |
4841 | register int len; | |
4842 | ||
4843 | for (len = *len_pointer; len > 0; len--) | |
4844 | { | |
4845 | if (*s == 0) | |
4846 | { | |
4847 | s = 0; | |
4848 | len = 1; | |
4849 | *len_pointer = 0; | |
0e389e77 | 4850 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
4851 | } |
4852 | } | |
4853 | } | |
f0e652b4 | 4854 | |
252b5132 RH |
4855 | return s; |
4856 | } | |
4857 | \f | |
041ff4dd NC |
4858 | /* Demand string, but return a safe (=private) copy of the string. |
4859 | Return NULL if we can't read a string here. */ | |
4860 | ||
252b5132 | 4861 | char * |
39e6acbd | 4862 | demand_copy_string (int *lenP) |
252b5132 RH |
4863 | { |
4864 | register unsigned int c; | |
4865 | register int len; | |
4866 | char *retval; | |
4867 | ||
4868 | len = 0; | |
4869 | SKIP_WHITESPACE (); | |
4870 | if (*input_line_pointer == '\"') | |
4871 | { | |
041ff4dd | 4872 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
4873 | |
4874 | while (is_a_char (c = next_char_of_string ())) | |
4875 | { | |
4876 | obstack_1grow (¬es, c); | |
4877 | len++; | |
4878 | } | |
4879 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 4880 | null terminated string. */ |
252b5132 RH |
4881 | obstack_1grow (¬es, '\0'); |
4882 | retval = obstack_finish (¬es); | |
4883 | } | |
4884 | else | |
4885 | { | |
c95b35a9 | 4886 | as_bad (_("missing string")); |
252b5132 RH |
4887 | retval = NULL; |
4888 | ignore_rest_of_line (); | |
4889 | } | |
4890 | *lenP = len; | |
4891 | return (retval); | |
041ff4dd | 4892 | } |
252b5132 | 4893 | \f |
041ff4dd | 4894 | /* In: Input_line_pointer->next character. |
f0e652b4 | 4895 | |
041ff4dd | 4896 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 4897 | |
041ff4dd NC |
4898 | Out: 1 if input_line_pointer->end-of-line. */ |
4899 | ||
4900 | int | |
39e6acbd | 4901 | is_it_end_of_statement (void) |
252b5132 RH |
4902 | { |
4903 | SKIP_WHITESPACE (); | |
4904 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 4905 | } |
252b5132 | 4906 | |
041ff4dd | 4907 | void |
39e6acbd | 4908 | equals (char *sym_name, int reassign) |
252b5132 | 4909 | { |
252b5132 RH |
4910 | char *stop = NULL; |
4911 | char stopc; | |
4912 | ||
4913 | input_line_pointer++; | |
4914 | if (*input_line_pointer == '=') | |
4915 | input_line_pointer++; | |
4916 | ||
4917 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
4918 | input_line_pointer++; | |
4919 | ||
4920 | if (flag_mri) | |
4921 | stop = mri_comment_field (&stopc); | |
4922 | ||
be95a9c1 | 4923 | assign_symbol (sym_name, !reassign); |
252b5132 RH |
4924 | |
4925 | if (flag_mri) | |
be95a9c1 | 4926 | mri_comment_end (stop, stopc); |
041ff4dd | 4927 | } |
252b5132 | 4928 | |
7e005732 NC |
4929 | /* .incbin -- include a file verbatim at the current location. */ |
4930 | ||
4931 | void | |
39e6acbd | 4932 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
4933 | { |
4934 | FILE * binfile; | |
4935 | char * path; | |
4936 | char * filename; | |
4937 | char * binfrag; | |
4938 | long skip = 0; | |
4939 | long count = 0; | |
4940 | long bytes; | |
4941 | int len; | |
4942 | ||
4943 | #ifdef md_flush_pending_output | |
4944 | md_flush_pending_output (); | |
4945 | #endif | |
4946 | ||
4947 | SKIP_WHITESPACE (); | |
4948 | filename = demand_copy_string (& len); | |
4949 | if (filename == NULL) | |
4950 | return; | |
4951 | ||
4952 | SKIP_WHITESPACE (); | |
4953 | ||
4954 | /* Look for optional skip and count. */ | |
4955 | if (* input_line_pointer == ',') | |
4956 | { | |
4957 | ++ input_line_pointer; | |
4958 | skip = get_absolute_expression (); | |
4959 | ||
4960 | SKIP_WHITESPACE (); | |
4961 | ||
4962 | if (* input_line_pointer == ',') | |
4963 | { | |
4964 | ++ input_line_pointer; | |
4965 | ||
4966 | count = get_absolute_expression (); | |
4967 | if (count == 0) | |
4968 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
4969 | ||
4970 | SKIP_WHITESPACE (); | |
4971 | } | |
4972 | } | |
4973 | ||
4974 | demand_empty_rest_of_line (); | |
4975 | ||
4976 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 4977 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
4978 | if (binfile == NULL) |
4979 | { | |
4980 | int i; | |
4981 | ||
4982 | path = xmalloc ((unsigned long) len + include_dir_maxlen + 5); | |
4983 | ||
4984 | for (i = 0; i < include_dir_count; i++) | |
4985 | { | |
4986 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
4987 | ||
f740e790 | 4988 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
4989 | if (binfile != NULL) |
4990 | break; | |
4991 | } | |
4992 | ||
4993 | if (binfile == NULL) | |
4994 | as_bad (_("file not found: %s"), filename); | |
4995 | } | |
4996 | else | |
4997 | path = xstrdup (filename); | |
4998 | ||
4999 | if (binfile) | |
5000 | { | |
f740e790 NC |
5001 | long file_len; |
5002 | ||
7e005732 NC |
5003 | register_dependency (path); |
5004 | ||
5005 | /* Compute the length of the file. */ | |
5006 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5007 | { | |
5008 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5009 | goto done; | |
5010 | } | |
f740e790 | 5011 | file_len = ftell (binfile); |
7e005732 | 5012 | |
c556cc9c | 5013 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5014 | if (count == 0) |
c556cc9c | 5015 | count = file_len - skip; |
7e005732 | 5016 | |
c556cc9c | 5017 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5018 | { |
c556cc9c | 5019 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5020 | skip, count, file_len); |
7e005732 NC |
5021 | goto done; |
5022 | } | |
5023 | ||
5024 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5025 | { | |
5026 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5027 | goto done; | |
5028 | } | |
5029 | ||
5030 | /* Allocate frag space and store file contents in it. */ | |
5031 | binfrag = frag_more (count); | |
5032 | ||
5033 | bytes = fread (binfrag, 1, count, binfile); | |
5034 | if (bytes < count) | |
5035 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5036 | path, bytes, count); | |
5037 | } | |
5038 | done: | |
5039 | if (binfile != NULL) | |
5040 | fclose (binfile); | |
5041 | if (path) | |
5042 | free (path); | |
5043 | } | |
5044 | ||
041ff4dd | 5045 | /* .include -- include a file at this point. */ |
252b5132 | 5046 | |
041ff4dd | 5047 | void |
39e6acbd | 5048 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5049 | { |
252b5132 RH |
5050 | char *filename; |
5051 | int i; | |
5052 | FILE *try; | |
5053 | char *path; | |
5054 | ||
041ff4dd | 5055 | if (!flag_m68k_mri) |
252b5132 RH |
5056 | { |
5057 | filename = demand_copy_string (&i); | |
5058 | if (filename == NULL) | |
5059 | { | |
5060 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5061 | called ignore_rest_of_line. */ |
252b5132 RH |
5062 | return; |
5063 | } | |
5064 | } | |
5065 | else | |
5066 | { | |
5067 | SKIP_WHITESPACE (); | |
5068 | i = 0; | |
041ff4dd | 5069 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5070 | && *input_line_pointer != ' ' |
5071 | && *input_line_pointer != '\t') | |
5072 | { | |
5073 | obstack_1grow (¬es, *input_line_pointer); | |
5074 | ++input_line_pointer; | |
5075 | ++i; | |
5076 | } | |
f0e652b4 | 5077 | |
252b5132 RH |
5078 | obstack_1grow (¬es, '\0'); |
5079 | filename = obstack_finish (¬es); | |
041ff4dd | 5080 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5081 | ++input_line_pointer; |
5082 | } | |
f0e652b4 | 5083 | |
252b5132 RH |
5084 | demand_empty_rest_of_line (); |
5085 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5086 | |
252b5132 RH |
5087 | for (i = 0; i < include_dir_count; i++) |
5088 | { | |
5089 | strcpy (path, include_dirs[i]); | |
5090 | strcat (path, "/"); | |
5091 | strcat (path, filename); | |
f740e790 | 5092 | if (0 != (try = fopen (path, FOPEN_RT))) |
252b5132 RH |
5093 | { |
5094 | fclose (try); | |
5095 | goto gotit; | |
5096 | } | |
5097 | } | |
f0e652b4 | 5098 | |
252b5132 RH |
5099 | free (path); |
5100 | path = filename; | |
5101 | gotit: | |
041ff4dd | 5102 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5103 | register_dependency (path); |
9f10757c | 5104 | input_scrub_insert_file (path); |
041ff4dd | 5105 | } |
252b5132 | 5106 | |
041ff4dd | 5107 | void |
39e6acbd | 5108 | add_include_dir (char *path) |
252b5132 RH |
5109 | { |
5110 | int i; | |
5111 | ||
5112 | if (include_dir_count == 0) | |
5113 | { | |
5114 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5115 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5116 | include_dir_count = 2; |
5117 | } | |
5118 | else | |
5119 | { | |
5120 | include_dir_count++; | |
041ff4dd NC |
5121 | include_dirs = |
5122 | (char **) realloc (include_dirs, | |
5123 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5124 | } |
5125 | ||
041ff4dd | 5126 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5127 | |
5128 | i = strlen (path); | |
5129 | if (i > include_dir_maxlen) | |
5130 | include_dir_maxlen = i; | |
041ff4dd | 5131 | } |
252b5132 RH |
5132 | \f |
5133 | /* Output debugging information to denote the source file. */ | |
5134 | ||
5135 | static void | |
39e6acbd | 5136 | generate_file_debug (void) |
252b5132 RH |
5137 | { |
5138 | if (debug_type == DEBUG_STABS) | |
5139 | stabs_generate_asm_file (); | |
5140 | } | |
5141 | ||
5142 | /* Output line number debugging information for the current source line. */ | |
5143 | ||
5144 | void | |
39e6acbd | 5145 | generate_lineno_debug (void) |
252b5132 | 5146 | { |
252b5132 RH |
5147 | switch (debug_type) |
5148 | { | |
5149 | case DEBUG_UNSPECIFIED: | |
5150 | case DEBUG_NONE: | |
4dc7ead9 | 5151 | case DEBUG_DWARF: |
252b5132 RH |
5152 | break; |
5153 | case DEBUG_STABS: | |
5154 | stabs_generate_asm_lineno (); | |
5155 | break; | |
5156 | case DEBUG_ECOFF: | |
5157 | ecoff_generate_asm_lineno (); | |
5158 | break; | |
252b5132 | 5159 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5160 | /* ??? We could here indicate to dwarf2dbg.c that something |
5161 | has changed. However, since there is additional backend | |
5162 | support that is required (calling dwarf2_emit_insn), we | |
5163 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5164 | break; |
5165 | } | |
5166 | } | |
5167 | ||
5168 | /* Output debugging information to mark a function entry point or end point. | |
5169 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5170 | ||
5171 | void | |
39e6acbd | 5172 | s_func (int end_p) |
252b5132 RH |
5173 | { |
5174 | do_s_func (end_p, NULL); | |
5175 | } | |
5176 | ||
5177 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5178 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5179 | ||
5180 | void | |
39e6acbd | 5181 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5182 | { |
5183 | /* Record the current function so that we can issue an error message for | |
5184 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5185 | arguments. */ | |
5186 | static char *current_name; | |
5187 | static char *current_label; | |
5188 | ||
5189 | if (end_p) | |
5190 | { | |
5191 | if (current_name == NULL) | |
5192 | { | |
5193 | as_bad (_("missing .func")); | |
5194 | ignore_rest_of_line (); | |
5195 | return; | |
5196 | } | |
5197 | ||
5198 | if (debug_type == DEBUG_STABS) | |
5199 | stabs_generate_asm_endfunc (current_name, current_label); | |
5200 | ||
5201 | current_name = current_label = NULL; | |
5202 | } | |
5203 | else /* ! end_p */ | |
5204 | { | |
041ff4dd NC |
5205 | char *name, *label; |
5206 | char delim1, delim2; | |
252b5132 RH |
5207 | |
5208 | if (current_name != NULL) | |
5209 | { | |
5210 | as_bad (_(".endfunc missing for previous .func")); | |
5211 | ignore_rest_of_line (); | |
5212 | return; | |
5213 | } | |
5214 | ||
5215 | name = input_line_pointer; | |
5216 | delim1 = get_symbol_end (); | |
5217 | name = xstrdup (name); | |
5218 | *input_line_pointer = delim1; | |
5219 | SKIP_WHITESPACE (); | |
5220 | if (*input_line_pointer != ',') | |
5221 | { | |
5222 | if (default_prefix) | |
5223 | asprintf (&label, "%s%s", default_prefix, name); | |
5224 | else | |
5225 | { | |
5226 | char leading_char = 0; | |
5227 | #ifdef BFD_ASSEMBLER | |
5228 | leading_char = bfd_get_symbol_leading_char (stdoutput); | |
5229 | #endif | |
5230 | /* Missing entry point, use function's name with the leading | |
5231 | char prepended. */ | |
5232 | if (leading_char) | |
5233 | asprintf (&label, "%c%s", leading_char, name); | |
5234 | else | |
5235 | label = name; | |
5236 | } | |
5237 | } | |
5238 | else | |
5239 | { | |
5240 | ++input_line_pointer; | |
5241 | SKIP_WHITESPACE (); | |
5242 | label = input_line_pointer; | |
5243 | delim2 = get_symbol_end (); | |
5244 | label = xstrdup (label); | |
5245 | *input_line_pointer = delim2; | |
5246 | } | |
5247 | ||
5248 | if (debug_type == DEBUG_STABS) | |
5249 | stabs_generate_asm_func (name, label); | |
5250 | ||
5251 | current_name = name; | |
5252 | current_label = label; | |
5253 | } | |
5254 | ||
5255 | demand_empty_rest_of_line (); | |
5256 | } | |
5257 | \f | |
041ff4dd | 5258 | void |
39e6acbd | 5259 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 RH |
5260 | { |
5261 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
5262 | { | |
5263 | ++input_line_pointer; | |
5264 | } | |
5265 | ++input_line_pointer; | |
5266 | } | |
5267 | ||
252b5132 | 5268 | void |
39e6acbd | 5269 | read_print_statistics (FILE *file) |
252b5132 RH |
5270 | { |
5271 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5272 | } | |
5273 | ||
041ff4dd NC |
5274 | /* Inserts the given line into the input stream. |
5275 | ||
9f10757c TW |
5276 | This call avoids macro/conditionals nesting checking, since the contents of |
5277 | the line are assumed to replace the contents of a line already scanned. | |
5278 | ||
47eebc20 | 5279 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
5280 | called by md_start_line_hook(). The given line is assumed to already be |
5281 | properly scrubbed. */ | |
5282 | ||
5283 | void | |
39e6acbd | 5284 | input_scrub_insert_line (const char *line) |
9f10757c TW |
5285 | { |
5286 | sb newline; | |
5287 | sb_new (&newline); | |
5288 | sb_add_string (&newline, line); | |
5289 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5290 | sb_kill (&newline); | |
5291 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5292 | } | |
5293 | ||
5294 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5295 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5296 | |
5297 | void | |
39e6acbd | 5298 | input_scrub_insert_file (char *path) |
9f10757c TW |
5299 | { |
5300 | input_scrub_include_file (path, input_line_pointer); | |
5301 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5302 | } |