Commit | Line | Data |
---|---|---|
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 | |
4b4da160 NC |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
59c871b4 | 23 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
041ff4dd NC |
24 | But then, GNU isn't spozed to run on your machine anyway. |
25 | (RMS is so shortsighted sometimes.) */ | |
041ff4dd | 26 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 27 | |
252b5132 | 28 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 29 | grow when we do 4361 style flonums. */ |
252b5132 RH |
30 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
31 | ||
47eebc20 | 32 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
33 | Another group of these functions is in the expr.c module. */ |
34 | ||
252b5132 | 35 | #include "as.h" |
3882b010 | 36 | #include "safe-ctype.h" |
252b5132 RH |
37 | #include "subsegs.h" |
38 | #include "sb.h" | |
39 | #include "macro.h" | |
40 | #include "obstack.h" | |
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 | ||
87c245cc | 214 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd KH |
215 | static void do_align (int, char *, int, int); |
216 | static void s_align (int, int); | |
caa32fe5 | 217 | static void s_altmacro (int); |
057f53c1 | 218 | static void s_bad_end (int); |
39e6acbd | 219 | static int hex_float (int, char *); |
39e6acbd KH |
220 | static segT get_known_segmented_expression (expressionS * expP); |
221 | static void pobegin (void); | |
222 | static int get_line_sb (sb *); | |
223 | static void generate_file_debug (void); | |
40a4d956 | 224 | static char *_find_end_of_line (char *, int, int); |
252b5132 | 225 | \f |
252b5132 | 226 | void |
39e6acbd | 227 | read_begin (void) |
252b5132 RH |
228 | { |
229 | const char *p; | |
230 | ||
231 | pobegin (); | |
232 | obj_read_begin_hook (); | |
233 | ||
234 | /* Something close -- but not too close -- to a multiple of 1024. | |
235 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
236 | obstack_begin (¬es, chunksize); | |
237 | obstack_begin (&cond_obstack, chunksize); | |
238 | ||
041ff4dd | 239 | /* Use machine dependent syntax. */ |
252b5132 RH |
240 | for (p = line_separator_chars; *p; p++) |
241 | is_end_of_line[(unsigned char) *p] = 1; | |
041ff4dd | 242 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
243 | |
244 | if (flag_mri) | |
245 | lex_type['?'] = 3; | |
246 | } | |
247 | \f | |
cc1bc22a AM |
248 | #ifndef TC_ADDRESS_BYTES |
249 | #ifdef BFD_ASSEMBLER | |
250 | #define TC_ADDRESS_BYTES address_bytes | |
251 | ||
252 | static inline int | |
253 | address_bytes (void) | |
254 | { | |
255 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
256 | contain an address. */ | |
257 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
258 | n |= n >> 1; | |
259 | n |= n >> 2; | |
260 | n += 1; | |
261 | return n; | |
262 | } | |
263 | #endif | |
264 | #endif | |
265 | ||
041ff4dd | 266 | /* Set up pseudo-op tables. */ |
252b5132 RH |
267 | |
268 | static struct hash_control *po_hash; | |
269 | ||
ef99799a | 270 | static const pseudo_typeS potable[] = { |
252b5132 RH |
271 | {"abort", s_abort, 0}, |
272 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 273 | {"altmacro", s_altmacro, 1}, |
252b5132 RH |
274 | {"ascii", stringer, 0}, |
275 | {"asciz", stringer, 1}, | |
276 | {"balign", s_align_bytes, 0}, | |
277 | {"balignw", s_align_bytes, -2}, | |
278 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 279 | /* block */ |
252b5132 RH |
280 | {"byte", cons, 1}, |
281 | {"comm", s_comm, 0}, | |
282 | {"common", s_mri_common, 0}, | |
283 | {"common.s", s_mri_common, 1}, | |
284 | {"data", s_data, 0}, | |
285 | {"dc", cons, 2}, | |
cc1bc22a AM |
286 | #ifdef TC_ADDRESS_BYTES |
287 | {"dc.a", cons, 0}, | |
288 | #endif | |
252b5132 RH |
289 | {"dc.b", cons, 1}, |
290 | {"dc.d", float_cons, 'd'}, | |
291 | {"dc.l", cons, 4}, | |
292 | {"dc.s", float_cons, 'f'}, | |
293 | {"dc.w", cons, 2}, | |
294 | {"dc.x", float_cons, 'x'}, | |
295 | {"dcb", s_space, 2}, | |
296 | {"dcb.b", s_space, 1}, | |
297 | {"dcb.d", s_float_space, 'd'}, | |
298 | {"dcb.l", s_space, 4}, | |
299 | {"dcb.s", s_float_space, 'f'}, | |
300 | {"dcb.w", s_space, 2}, | |
301 | {"dcb.x", s_float_space, 'x'}, | |
302 | {"ds", s_space, 2}, | |
303 | {"ds.b", s_space, 1}, | |
304 | {"ds.d", s_space, 8}, | |
305 | {"ds.l", s_space, 4}, | |
306 | {"ds.p", s_space, 12}, | |
307 | {"ds.s", s_space, 4}, | |
308 | {"ds.w", s_space, 2}, | |
309 | {"ds.x", s_space, 12}, | |
310 | {"debug", s_ignore, 0}, | |
311 | #ifdef S_SET_DESC | |
312 | {"desc", s_desc, 0}, | |
313 | #endif | |
041ff4dd | 314 | /* dim */ |
252b5132 | 315 | {"double", float_cons, 'd'}, |
041ff4dd NC |
316 | /* dsect */ |
317 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
318 | {"else", s_else, 0}, |
319 | {"elsec", s_else, 0}, | |
3fd9f047 | 320 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
321 | {"end", s_end, 0}, |
322 | {"endc", s_endif, 0}, | |
323 | {"endfunc", s_func, 1}, | |
324 | {"endif", s_endif, 0}, | |
057f53c1 JB |
325 | {"endm", s_bad_end, 0}, |
326 | {"endr", s_bad_end, 1}, | |
041ff4dd | 327 | /* endef */ |
252b5132 RH |
328 | {"equ", s_set, 0}, |
329 | {"equiv", s_set, 1}, | |
330 | {"err", s_err, 0}, | |
d190d046 | 331 | {"error", s_errwarn, 1}, |
252b5132 | 332 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
333 | /* extend */ |
334 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 RH |
335 | {"appfile", s_app_file, 1}, |
336 | {"appline", s_app_line, 0}, | |
337 | {"fail", s_fail, 0}, | |
338 | {"file", s_app_file, 0}, | |
339 | {"fill", s_fill, 0}, | |
340 | {"float", float_cons, 'f'}, | |
341 | {"format", s_ignore, 0}, | |
342 | {"func", s_func, 0}, | |
343 | {"global", s_globl, 0}, | |
344 | {"globl", s_globl, 0}, | |
345 | {"hword", cons, 2}, | |
346 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 347 | {"ifb", s_ifb, 1}, |
252b5132 RH |
348 | {"ifc", s_ifc, 0}, |
349 | {"ifdef", s_ifdef, 0}, | |
350 | {"ifeq", s_if, (int) O_eq}, | |
351 | {"ifeqs", s_ifeqs, 0}, | |
352 | {"ifge", s_if, (int) O_ge}, | |
353 | {"ifgt", s_if, (int) O_gt}, | |
354 | {"ifle", s_if, (int) O_le}, | |
355 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 356 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
357 | {"ifnc", s_ifc, 1}, |
358 | {"ifndef", s_ifdef, 1}, | |
359 | {"ifne", s_if, (int) O_ne}, | |
360 | {"ifnes", s_ifeqs, 1}, | |
361 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 362 | {"incbin", s_incbin, 0}, |
252b5132 RH |
363 | {"include", s_include, 0}, |
364 | {"int", cons, 4}, | |
365 | {"irp", s_irp, 0}, | |
366 | {"irep", s_irp, 0}, | |
367 | {"irpc", s_irp, 1}, | |
368 | {"irepc", s_irp, 1}, | |
369 | {"lcomm", s_lcomm, 0}, | |
041ff4dd | 370 | {"lflags", listing_flags, 0}, /* Listing flags. */ |
252b5132 | 371 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 372 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
373 | {"llen", listing_psize, 1}, |
374 | {"long", cons, 4}, | |
375 | {"lsym", s_lsym, 0}, | |
376 | {"macro", s_macro, 0}, | |
377 | {"mexit", s_mexit, 0}, | |
378 | {"mri", s_mri, 0}, | |
379 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
380 | {"name", s_ignore, 0}, | |
caa32fe5 | 381 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 382 | {"noformat", s_ignore, 0}, |
041ff4dd | 383 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
384 | {"nopage", listing_nopage, 0}, |
385 | {"octa", cons, 16}, | |
386 | {"offset", s_struct, 0}, | |
387 | {"org", s_org, 0}, | |
388 | {"p2align", s_align_ptwo, 0}, | |
389 | {"p2alignw", s_align_ptwo, -2}, | |
390 | {"p2alignl", s_align_ptwo, -4}, | |
391 | {"page", listing_eject, 0}, | |
392 | {"plen", listing_psize, 0}, | |
393 | {"print", s_print, 0}, | |
041ff4dd | 394 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
395 | {"purgem", s_purgem, 0}, |
396 | {"quad", cons, 8}, | |
397 | {"rep", s_rept, 0}, | |
398 | {"rept", s_rept, 0}, | |
399 | {"rva", s_rva, 4}, | |
041ff4dd NC |
400 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
401 | /* scl */ | |
402 | /* sect */ | |
252b5132 RH |
403 | {"set", s_set, 0}, |
404 | {"short", cons, 2}, | |
405 | {"single", float_cons, 'f'}, | |
041ff4dd | 406 | /* size */ |
252b5132 RH |
407 | {"space", s_space, 0}, |
408 | {"skip", s_space, 0}, | |
409 | {"sleb128", s_leb128, 1}, | |
410 | {"spc", s_ignore, 0}, | |
411 | {"stabd", s_stab, 'd'}, | |
412 | {"stabn", s_stab, 'n'}, | |
413 | {"stabs", s_stab, 's'}, | |
414 | {"string", stringer, 1}, | |
415 | {"struct", s_struct, 0}, | |
041ff4dd | 416 | /* tag */ |
252b5132 RH |
417 | {"text", s_text, 0}, |
418 | ||
419 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
420 | won't be able to use it for a while -- probably a year or more. | |
421 | But once this has been released, check with gcc maintainers | |
422 | before deleting it or even changing the spelling. */ | |
423 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
424 | /* If we're folding case -- done for some targets, not necessarily | |
425 | all -- the above string in an input file will be converted to | |
426 | this one. Match it either way... */ | |
427 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
428 | ||
041ff4dd | 429 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 430 | {"ttl", listing_title, 0}, |
041ff4dd | 431 | /* type */ |
252b5132 | 432 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
433 | /* use */ |
434 | /* val */ | |
252b5132 RH |
435 | {"xcom", s_comm, 0}, |
436 | {"xdef", s_globl, 0}, | |
437 | {"xref", s_ignore, 0}, | |
438 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 439 | {"warning", s_errwarn, 0}, |
252b5132 RH |
440 | {"word", cons, 2}, |
441 | {"zero", s_space, 0}, | |
041ff4dd | 442 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
443 | }; |
444 | ||
87c245cc BE |
445 | static offsetT |
446 | get_absolute_expr (expressionS *exp) | |
447 | { | |
448 | expression (exp); | |
449 | if (exp->X_op != O_constant) | |
450 | { | |
451 | if (exp->X_op != O_absent) | |
452 | as_bad (_("bad or irreducible absolute expression")); | |
453 | exp->X_add_number = 0; | |
454 | } | |
455 | return exp->X_add_number; | |
456 | } | |
457 | ||
458 | offsetT | |
459 | get_absolute_expression (void) | |
460 | { | |
461 | expressionS exp; | |
462 | ||
463 | return get_absolute_expr (&exp); | |
464 | } | |
465 | ||
252b5132 RH |
466 | static int pop_override_ok = 0; |
467 | static const char *pop_table_name; | |
468 | ||
469 | void | |
39e6acbd | 470 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
471 | { |
472 | const char *errtxt; | |
473 | const pseudo_typeS *pop; | |
474 | for (pop = table; pop->poc_name; pop++) | |
475 | { | |
476 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
477 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
478 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
479 | errtxt); | |
480 | } | |
481 | } | |
482 | ||
483 | #ifndef md_pop_insert | |
484 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
485 | #endif | |
486 | ||
487 | #ifndef obj_pop_insert | |
488 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
489 | #endif | |
490 | ||
54cfded0 AM |
491 | #ifndef cfi_pop_insert |
492 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
493 | #endif | |
494 | ||
041ff4dd | 495 | static void |
39e6acbd | 496 | pobegin (void) |
252b5132 RH |
497 | { |
498 | po_hash = hash_new (); | |
499 | ||
041ff4dd | 500 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
501 | pop_table_name = "md"; |
502 | md_pop_insert (); | |
503 | ||
041ff4dd | 504 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
505 | pop_table_name = "obj"; |
506 | pop_override_ok = 1; | |
507 | obj_pop_insert (); | |
508 | ||
041ff4dd | 509 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
510 | pop_table_name = "standard"; |
511 | pop_insert (potable); | |
d6415f6c | 512 | |
54cfded0 AM |
513 | #ifdef TARGET_USE_CFIPOP |
514 | pop_table_name = "cfi"; | |
515 | pop_override_ok = 1; | |
516 | cfi_pop_insert (); | |
517 | #endif | |
252b5132 RH |
518 | } |
519 | \f | |
520 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
521 | if (ignore_input ()) \ | |
522 | { \ | |
40a4d956 JB |
523 | char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \ |
524 | input_line_pointer = (input_line_pointer <= buffer_limit \ | |
525 | && eol >= buffer_limit) \ | |
526 | ? buffer_limit \ | |
527 | : eol + 1; \ | |
252b5132 RH |
528 | continue; \ |
529 | } | |
530 | ||
252b5132 RH |
531 | /* This function is used when scrubbing the characters between #APP |
532 | and #NO_APP. */ | |
533 | ||
534 | static char *scrub_string; | |
535 | static char *scrub_string_end; | |
536 | ||
537 | static int | |
39e6acbd | 538 | scrub_from_string (char *buf, int buflen) |
252b5132 | 539 | { |
2b47531b ILT |
540 | int copy; |
541 | ||
542 | copy = scrub_string_end - scrub_string; | |
543 | if (copy > buflen) | |
544 | copy = buflen; | |
545 | memcpy (buf, scrub_string, copy); | |
546 | scrub_string += copy; | |
547 | return copy; | |
252b5132 RH |
548 | } |
549 | ||
5e75c3ab JB |
550 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
551 | static int | |
552 | try_macro (char term, const char *line) | |
553 | { | |
554 | sb out; | |
555 | const char *err; | |
556 | macro_entry *macro; | |
557 | ||
558 | if (check_macro (line, &out, &err, ¯o)) | |
559 | { | |
560 | if (err != NULL) | |
561 | as_bad ("%s", err); | |
562 | *input_line_pointer++ = term; | |
563 | input_scrub_include_sb (&out, | |
564 | input_line_pointer, 1); | |
565 | sb_kill (&out); | |
566 | buffer_limit = | |
567 | input_scrub_next_buffer (&input_line_pointer); | |
568 | #ifdef md_macro_info | |
569 | md_macro_info (macro); | |
570 | #endif | |
571 | return 1; | |
572 | } | |
573 | return 0; | |
574 | } | |
575 | ||
041ff4dd NC |
576 | /* We read the file, putting things into a web that represents what we |
577 | have been reading. */ | |
578 | void | |
39e6acbd | 579 | read_a_source_file (char *name) |
252b5132 RH |
580 | { |
581 | register char c; | |
041ff4dd | 582 | register char *s; /* String of symbol, '\0' appended. */ |
252b5132 RH |
583 | register int temp; |
584 | pseudo_typeS *pop; | |
585 | ||
4c400d5e AM |
586 | #ifdef WARN_COMMENTS |
587 | found_comment = 0; | |
588 | #endif | |
589 | ||
252b5132 RH |
590 | buffer = input_scrub_new_file (name); |
591 | ||
592 | listing_file (name); | |
593 | listing_newline (NULL); | |
594 | register_dependency (name); | |
595 | ||
596 | /* Generate debugging information before we've read anything in to denote | |
597 | this file as the "main" source file and not a subordinate one | |
598 | (e.g. N_SO vs N_SOL in stabs). */ | |
599 | generate_file_debug (); | |
600 | ||
601 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 602 | { /* We have another line to parse. */ |
5e75c3ab JB |
603 | #ifndef NO_LISTING |
604 | /* In order to avoid listing macro expansion lines with labels | |
605 | multiple times, keep track of which line was last issued. */ | |
606 | static char *last_eol; | |
607 | ||
608 | last_eol = NULL; | |
609 | #endif | |
041ff4dd | 610 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ |
64e55042 | 611 | |
252b5132 RH |
612 | while (input_line_pointer < buffer_limit) |
613 | { | |
041ff4dd | 614 | /* We have more of this buffer to parse. */ |
252b5132 | 615 | |
041ff4dd NC |
616 | /* We now have input_line_pointer->1st char of next line. |
617 | If input_line_pointer [-1] == '\n' then we just | |
618 | scanned another line: so bump line counters. */ | |
252b5132 RH |
619 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
620 | { | |
621 | #ifdef md_start_line_hook | |
622 | md_start_line_hook (); | |
623 | #endif | |
252b5132 RH |
624 | if (input_line_pointer[-1] == '\n') |
625 | bump_line_counters (); | |
626 | ||
627 | line_label = NULL; | |
628 | ||
abd63a32 | 629 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
630 | { |
631 | /* Text at the start of a line must be a label, we | |
632 | run down and stick a colon in. */ | |
633 | if (is_name_beginner (*input_line_pointer)) | |
634 | { | |
635 | char *line_start = input_line_pointer; | |
636 | char c; | |
637 | int mri_line_macro; | |
638 | ||
639 | LISTING_NEWLINE (); | |
640 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
641 | ||
642 | c = get_symbol_end (); | |
643 | ||
644 | /* In MRI mode, the EQU and MACRO pseudoops must | |
645 | be handled specially. */ | |
646 | mri_line_macro = 0; | |
647 | if (flag_m68k_mri) | |
648 | { | |
649 | char *rest = input_line_pointer + 1; | |
650 | ||
651 | if (*rest == ':') | |
652 | ++rest; | |
653 | if (*rest == ' ' || *rest == '\t') | |
654 | ++rest; | |
655 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
656 | || strncasecmp (rest, "SET", 3) == 0) | |
657 | && (rest[3] == ' ' || rest[3] == '\t')) | |
658 | { | |
659 | input_line_pointer = rest + 3; | |
660 | equals (line_start, | |
661 | strncasecmp (rest, "SET", 3) == 0); | |
662 | continue; | |
663 | } | |
664 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
665 | && (rest[5] == ' ' | |
666 | || rest[5] == '\t' | |
667 | || is_end_of_line[(unsigned char) rest[5]])) | |
668 | mri_line_macro = 1; | |
669 | } | |
670 | ||
671 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
672 | pseudo-op specially: we don't want to put the |
673 | symbol in the symbol table. */ | |
041ff4dd | 674 | if (!mri_line_macro |
a25c045a | 675 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
676 | && TC_START_LABEL_WITHOUT_COLON(c, |
677 | input_line_pointer) | |
a25c045a | 678 | #endif |
ef99799a | 679 | ) |
252b5132 RH |
680 | line_label = colon (line_start); |
681 | else | |
682 | line_label = symbol_create (line_start, | |
683 | absolute_section, | |
684 | (valueT) 0, | |
685 | &zero_address_frag); | |
686 | ||
687 | *input_line_pointer = c; | |
688 | if (c == ':') | |
689 | input_line_pointer++; | |
690 | } | |
691 | } | |
692 | } | |
693 | ||
47eebc20 | 694 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
695 | We expect a well-formed assembler statement. |
696 | A "symbol-name:" is a statement. | |
f0e652b4 | 697 | |
041ff4dd NC |
698 | Depending on what compiler is used, the order of these tests |
699 | may vary to catch most common case 1st. | |
700 | Each test is independent of all other tests at the (top) level. | |
701 | PLEASE make a compiler that doesn't use this assembler. | |
702 | It is crufty to waste a compiler's time encoding things for this | |
703 | assembler, which then wastes more time decoding it. | |
704 | (And communicating via (linear) files is silly! | |
705 | If you must pass stuff, please pass a tree!) */ | |
252b5132 RH |
706 | if ((c = *input_line_pointer++) == '\t' |
707 | || c == ' ' | |
708 | || c == '\f' | |
709 | || c == 0) | |
041ff4dd NC |
710 | c = *input_line_pointer++; |
711 | ||
712 | know (c != ' '); /* No further leading whitespace. */ | |
252b5132 RH |
713 | |
714 | #ifndef NO_LISTING | |
715 | /* If listing is on, and we are expanding a macro, then give | |
716 | the listing code the contents of the expanded line. */ | |
717 | if (listing) | |
718 | { | |
719 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
720 | { | |
721 | char *copy; | |
722 | int len; | |
723 | ||
724 | /* Find the end of the current expanded macro line. */ | |
40a4d956 | 725 | s = find_end_of_line (input_line_pointer - 1, flag_m68k_mri); |
252b5132 | 726 | |
5e75c3ab JB |
727 | if (s != last_eol) |
728 | { | |
729 | last_eol = s; | |
730 | /* Copy it for safe keeping. Also give an indication of | |
731 | how much macro nesting is involved at this point. */ | |
732 | len = s - (input_line_pointer - 1); | |
733 | copy = (char *) xmalloc (len + macro_nest + 2); | |
734 | memset (copy, '>', macro_nest); | |
735 | copy[macro_nest] = ' '; | |
736 | memcpy (copy + macro_nest + 1, input_line_pointer - 1, len); | |
737 | copy[macro_nest + 1 + len] = '\0'; | |
738 | ||
739 | /* Install the line with the listing facility. */ | |
740 | listing_newline (copy); | |
741 | } | |
252b5132 RH |
742 | } |
743 | else | |
744 | listing_newline (NULL); | |
745 | } | |
746 | #endif | |
041ff4dd NC |
747 | /* C is the 1st significant character. |
748 | Input_line_pointer points after that character. */ | |
252b5132 RH |
749 | if (is_name_beginner (c)) |
750 | { | |
041ff4dd | 751 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
752 | HANDLE_CONDITIONAL_ASSEMBLY (); |
753 | ||
754 | s = --input_line_pointer; | |
041ff4dd NC |
755 | c = get_symbol_end (); /* name's delimiter. */ |
756 | ||
757 | /* C is character after symbol. | |
d6415f6c AM |
758 | That character's place in the input line is now '\0'. |
759 | S points to the beginning of the symbol. | |
760 | [In case of pseudo-op, s->'.'.] | |
761 | Input_line_pointer->'\0' where c was. */ | |
041ff4dd | 762 | if (TC_START_LABEL (c, input_line_pointer)) |
252b5132 RH |
763 | { |
764 | if (flag_m68k_mri) | |
765 | { | |
766 | char *rest = input_line_pointer + 1; | |
767 | ||
768 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
769 | if (*rest == ':') |
770 | ++rest; | |
f0e652b4 | 771 | |
252b5132 RH |
772 | if (*rest == ' ' || *rest == '\t') |
773 | ++rest; | |
f0e652b4 | 774 | |
252b5132 RH |
775 | if ((strncasecmp (rest, "EQU", 3) == 0 |
776 | || strncasecmp (rest, "SET", 3) == 0) | |
777 | && (rest[3] == ' ' || rest[3] == '\t')) | |
778 | { | |
779 | input_line_pointer = rest + 3; | |
780 | equals (s, 1); | |
781 | continue; | |
782 | } | |
783 | } | |
784 | ||
041ff4dd NC |
785 | line_label = colon (s); /* User-defined label. */ |
786 | /* Put ':' back for error messages' sake. */ | |
787 | *input_line_pointer++ = ':'; | |
a645d1eb L |
788 | #ifdef tc_check_label |
789 | tc_check_label (line_label); | |
790 | #endif | |
041ff4dd | 791 | /* Input_line_pointer->after ':'. */ |
252b5132 | 792 | SKIP_WHITESPACE (); |
252b5132 | 793 | } |
ee3c9814 CM |
794 | else if ((c == '=' |
795 | || ((c == ' ' || c == '\t') | |
796 | && input_line_pointer[1] == '=')) | |
797 | #ifdef TC_EQUAL_IN_INSN | |
798 | && !TC_EQUAL_IN_INSN (c, s) | |
799 | #endif | |
800 | ) | |
252b5132 RH |
801 | { |
802 | equals (s, 1); | |
803 | demand_empty_rest_of_line (); | |
804 | } | |
805 | else | |
041ff4dd NC |
806 | { |
807 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
808 | pop = NULL; |
809 | ||
a8a3b3b2 | 810 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
811 | { |
812 | char *s2 = s; | |
37d8bb27 NC |
813 | |
814 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
815 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 816 | |
252b5132 RH |
817 | while (*s2) |
818 | { | |
3882b010 | 819 | *s2 = TOLOWER (*s2); |
252b5132 RH |
820 | s2++; |
821 | } | |
822 | } | |
823 | #endif | |
abd63a32 | 824 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 RH |
825 | { |
826 | /* The MRI assembler and the m88k use pseudo-ops | |
d6415f6c | 827 | without a period. */ |
252b5132 RH |
828 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
829 | if (pop != NULL && pop->poc_handler == NULL) | |
830 | pop = NULL; | |
831 | } | |
832 | ||
833 | if (pop != NULL | |
041ff4dd | 834 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 835 | { |
041ff4dd | 836 | /* PSEUDO - OP. |
f0e652b4 | 837 | |
d6415f6c AM |
838 | WARNING: c has next char, which may be end-of-line. |
839 | We lookup the pseudo-op table with s+1 because we | |
840 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
841 | |
842 | if (pop == NULL) | |
843 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
844 | if (pop && !pop->poc_handler) |
845 | pop = NULL; | |
252b5132 RH |
846 | |
847 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
848 | automatic alignment directive. What a hack |
849 | this is. */ | |
252b5132 RH |
850 | if (mri_pending_align |
851 | && (pop == NULL | |
041ff4dd NC |
852 | || !((pop->poc_handler == cons |
853 | && pop->poc_val == 1) | |
854 | || (pop->poc_handler == s_space | |
855 | && pop->poc_val == 1) | |
252b5132 | 856 | #ifdef tc_conditional_pseudoop |
041ff4dd | 857 | || tc_conditional_pseudoop (pop) |
252b5132 | 858 | #endif |
041ff4dd NC |
859 | || pop->poc_handler == s_if |
860 | || pop->poc_handler == s_ifdef | |
861 | || pop->poc_handler == s_ifc | |
862 | || pop->poc_handler == s_ifeqs | |
863 | || pop->poc_handler == s_else | |
864 | || pop->poc_handler == s_endif | |
865 | || pop->poc_handler == s_globl | |
866 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
867 | { |
868 | do_align (1, (char *) NULL, 0, 0); | |
869 | mri_pending_align = 0; | |
f0e652b4 | 870 | |
252b5132 RH |
871 | if (line_label != NULL) |
872 | { | |
2b47531b | 873 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
874 | S_SET_VALUE (line_label, frag_now_fix ()); |
875 | } | |
876 | } | |
877 | ||
041ff4dd | 878 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
879 | if (pop == NULL) |
880 | { | |
5e75c3ab JB |
881 | char *end = input_line_pointer; |
882 | ||
252b5132 RH |
883 | *input_line_pointer = c; |
884 | s_ignore (0); | |
5e75c3ab JB |
885 | c = *--input_line_pointer; |
886 | *input_line_pointer = '\0'; | |
887 | if (! macro_defined || ! try_macro (c, s)) | |
888 | { | |
889 | *end = '\0'; | |
890 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
891 | *input_line_pointer++ = c; | |
892 | } | |
252b5132 RH |
893 | continue; |
894 | } | |
895 | ||
041ff4dd | 896 | /* Put it back for error messages etc. */ |
252b5132 RH |
897 | *input_line_pointer = c; |
898 | /* The following skip of whitespace is compulsory. | |
899 | A well shaped space is sometimes all that separates | |
041ff4dd | 900 | keyword from operands. */ |
252b5132 RH |
901 | if (c == ' ' || c == '\t') |
902 | input_line_pointer++; | |
041ff4dd NC |
903 | |
904 | /* Input_line is restored. | |
d6415f6c AM |
905 | Input_line_pointer->1st non-blank char |
906 | after pseudo-operation. */ | |
252b5132 RH |
907 | (*pop->poc_handler) (pop->poc_val); |
908 | ||
909 | /* If that was .end, just get out now. */ | |
910 | if (pop->poc_handler == s_end) | |
911 | goto quit; | |
912 | } | |
913 | else | |
914 | { | |
041ff4dd NC |
915 | /* WARNING: c has char, which may be end-of-line. */ |
916 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 | 917 | *input_line_pointer = c; |
40a4d956 | 918 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1); |
252b5132 RH |
919 | c = *input_line_pointer; |
920 | *input_line_pointer = '\0'; | |
921 | ||
922 | generate_lineno_debug (); | |
923 | ||
5e75c3ab JB |
924 | if (macro_defined && try_macro (c, s)) |
925 | continue; | |
252b5132 RH |
926 | |
927 | if (mri_pending_align) | |
928 | { | |
929 | do_align (1, (char *) NULL, 0, 0); | |
930 | mri_pending_align = 0; | |
931 | if (line_label != NULL) | |
932 | { | |
2b47531b | 933 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
934 | S_SET_VALUE (line_label, frag_now_fix ()); |
935 | } | |
936 | } | |
937 | ||
041ff4dd | 938 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
939 | |
940 | *input_line_pointer++ = c; | |
941 | ||
942 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
943 | this instruction. */ |
944 | } | |
945 | } | |
252b5132 | 946 | continue; |
041ff4dd | 947 | } |
252b5132 RH |
948 | |
949 | /* Empty statement? */ | |
950 | if (is_end_of_line[(unsigned char) c]) | |
951 | continue; | |
952 | ||
3882b010 | 953 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 954 | { |
041ff4dd | 955 | /* local label ("4:") */ |
252b5132 RH |
956 | char *backup = input_line_pointer; |
957 | ||
958 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
959 | ||
960 | temp = c - '0'; | |
961 | ||
041ff4dd | 962 | /* Read the whole number. */ |
3882b010 | 963 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
964 | { |
965 | temp = (temp * 10) + *input_line_pointer - '0'; | |
966 | ++input_line_pointer; | |
041ff4dd | 967 | } |
252b5132 RH |
968 | |
969 | if (LOCAL_LABELS_DOLLAR | |
970 | && *input_line_pointer == '$' | |
971 | && *(input_line_pointer + 1) == ':') | |
972 | { | |
973 | input_line_pointer += 2; | |
974 | ||
975 | if (dollar_label_defined (temp)) | |
976 | { | |
977 | as_fatal (_("label \"%d$\" redefined"), temp); | |
978 | } | |
979 | ||
980 | define_dollar_label (temp); | |
981 | colon (dollar_label_name (temp, 0)); | |
982 | continue; | |
983 | } | |
984 | ||
985 | if (LOCAL_LABELS_FB | |
986 | && *input_line_pointer++ == ':') | |
987 | { | |
988 | fb_label_instance_inc (temp); | |
989 | colon (fb_label_name (temp, 0)); | |
990 | continue; | |
991 | } | |
992 | ||
993 | input_line_pointer = backup; | |
994 | } /* local label ("4:") */ | |
995 | ||
996 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 997 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 998 | sb sbuf; |
252b5132 RH |
999 | char *ends; |
1000 | char *new_buf; | |
1001 | char *new_tmp; | |
1002 | unsigned int new_length; | |
1003 | char *tmp_buf = 0; | |
1004 | ||
1005 | bump_line_counters (); | |
1006 | s = input_line_pointer; | |
1007 | if (strncmp (s, "APP\n", 4)) | |
1008 | continue; /* We ignore it */ | |
1009 | s += 4; | |
1010 | ||
64e55042 | 1011 | sb_new (&sbuf); |
252b5132 RH |
1012 | ends = strstr (s, "#NO_APP\n"); |
1013 | ||
1014 | if (!ends) | |
1015 | { | |
1016 | unsigned int tmp_len; | |
1017 | unsigned int num; | |
1018 | ||
1019 | /* The end of the #APP wasn't in this buffer. We | |
1020 | keep reading in buffers until we find the #NO_APP | |
1021 | that goes with this #APP There is one. The specs | |
47eebc20 | 1022 | guarantee it... */ |
252b5132 RH |
1023 | tmp_len = buffer_limit - s; |
1024 | tmp_buf = xmalloc (tmp_len + 1); | |
1025 | memcpy (tmp_buf, s, tmp_len); | |
1026 | do | |
1027 | { | |
1028 | new_tmp = input_scrub_next_buffer (&buffer); | |
1029 | if (!new_tmp) | |
1030 | break; | |
1031 | else | |
1032 | buffer_limit = new_tmp; | |
1033 | input_line_pointer = buffer; | |
1034 | ends = strstr (buffer, "#NO_APP\n"); | |
1035 | if (ends) | |
1036 | num = ends - buffer; | |
1037 | else | |
1038 | num = buffer_limit - buffer; | |
1039 | ||
1040 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
1041 | memcpy (tmp_buf + tmp_len, buffer, num); | |
1042 | tmp_len += num; | |
1043 | } | |
1044 | while (!ends); | |
1045 | ||
1046 | input_line_pointer = ends ? ends + 8 : NULL; | |
1047 | ||
1048 | s = tmp_buf; | |
1049 | ends = s + tmp_len; | |
1050 | ||
1051 | } | |
1052 | else | |
1053 | { | |
1054 | input_line_pointer = ends + 8; | |
1055 | } | |
1056 | ||
1057 | scrub_string = s; | |
1058 | scrub_string_end = ends; | |
1059 | ||
1060 | new_length = ends - s; | |
1061 | new_buf = (char *) xmalloc (new_length); | |
1062 | new_tmp = new_buf; | |
1063 | for (;;) | |
1064 | { | |
1065 | int space; | |
1066 | int size; | |
1067 | ||
1068 | space = (new_buf + new_length) - new_tmp; | |
1069 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1070 | ||
1071 | if (size < space) | |
1072 | { | |
64e55042 | 1073 | new_tmp[size] = 0; |
252b5132 RH |
1074 | break; |
1075 | } | |
1076 | ||
1077 | new_buf = xrealloc (new_buf, new_length + 100); | |
1078 | new_tmp = new_buf + new_length; | |
1079 | new_length += 100; | |
1080 | } | |
1081 | ||
1082 | if (tmp_buf) | |
1083 | free (tmp_buf); | |
f0e652b4 | 1084 | |
64e55042 HPN |
1085 | /* We've "scrubbed" input to the preferred format. In the |
1086 | process we may have consumed the whole of the remaining | |
1087 | file (and included files). We handle this formatted | |
1088 | input similar to that of macro expansion, letting | |
1089 | actual macro expansion (possibly nested) and other | |
1090 | input expansion work. Beware that in messages, line | |
1091 | numbers and possibly file names will be incorrect. */ | |
1092 | sb_add_string (&sbuf, new_buf); | |
1093 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); | |
1094 | sb_kill (&sbuf); | |
1095 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1096 | free (new_buf); | |
252b5132 RH |
1097 | continue; |
1098 | } | |
1099 | ||
1100 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1101 | ||
1102 | #ifdef tc_unrecognized_line | |
1103 | if (tc_unrecognized_line (c)) | |
1104 | continue; | |
1105 | #endif | |
0e389e77 AM |
1106 | input_line_pointer--; |
1107 | /* Report unknown char as ignored. */ | |
c95b35a9 | 1108 | demand_empty_rest_of_line (); |
041ff4dd | 1109 | } |
252b5132 RH |
1110 | |
1111 | #ifdef md_after_pass_hook | |
1112 | md_after_pass_hook (); | |
1113 | #endif | |
041ff4dd | 1114 | } |
252b5132 RH |
1115 | |
1116 | quit: | |
1117 | ||
1118 | #ifdef md_cleanup | |
041ff4dd | 1119 | md_cleanup (); |
252b5132 | 1120 | #endif |
041ff4dd NC |
1121 | /* Close the input file. */ |
1122 | input_scrub_close (); | |
4c400d5e AM |
1123 | #ifdef WARN_COMMENTS |
1124 | { | |
1125 | if (warn_comment && found_comment) | |
1126 | as_warn_where (found_comment_file, found_comment, | |
1127 | "first comment found here"); | |
1128 | } | |
1129 | #endif | |
252b5132 RH |
1130 | } |
1131 | ||
e5604d79 RS |
1132 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
1133 | Take the sign of the number from X_unsigned rather than X_add_number. */ | |
1134 | ||
1135 | static void | |
1136 | convert_to_bignum (expressionS *exp) | |
1137 | { | |
1138 | valueT value; | |
1139 | unsigned int i; | |
1140 | ||
1141 | value = exp->X_add_number; | |
1142 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1143 | { | |
1144 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1145 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1146 | } | |
1147 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1148 | the sign of the original value. */ | |
1149 | if ((exp->X_add_number < 0) != !exp->X_unsigned) | |
1150 | generic_bignum[i++] = exp->X_unsigned ? 0 : LITTLENUM_MASK; | |
1151 | exp->X_op = O_big; | |
1152 | exp->X_add_number = i; | |
1153 | } | |
1154 | ||
252b5132 RH |
1155 | /* For most MRI pseudo-ops, the line actually ends at the first |
1156 | nonquoted space. This function looks for that point, stuffs a null | |
1157 | in, and sets *STOPCP to the character that used to be there, and | |
1158 | returns the location. | |
1159 | ||
1160 | Until I hear otherwise, I am going to assume that this is only true | |
1161 | for the m68k MRI assembler. */ | |
1162 | ||
1163 | char * | |
39e6acbd | 1164 | mri_comment_field (char *stopcp) |
252b5132 | 1165 | { |
252b5132 | 1166 | char *s; |
041ff4dd | 1167 | #ifdef TC_M68K |
252b5132 RH |
1168 | int inquote = 0; |
1169 | ||
1170 | know (flag_m68k_mri); | |
1171 | ||
1172 | for (s = input_line_pointer; | |
041ff4dd | 1173 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1174 | || inquote); |
1175 | s++) | |
1176 | { | |
1177 | if (*s == '\'') | |
041ff4dd | 1178 | inquote = !inquote; |
252b5132 | 1179 | } |
252b5132 | 1180 | #else |
041ff4dd NC |
1181 | for (s = input_line_pointer; |
1182 | !is_end_of_line[(unsigned char) *s]; | |
1183 | s++) | |
252b5132 | 1184 | ; |
041ff4dd | 1185 | #endif |
252b5132 RH |
1186 | *stopcp = *s; |
1187 | *s = '\0'; | |
f0e652b4 | 1188 | |
252b5132 | 1189 | return s; |
252b5132 RH |
1190 | } |
1191 | ||
1192 | /* Skip to the end of an MRI comment field. */ | |
1193 | ||
1194 | void | |
39e6acbd | 1195 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1196 | { |
1197 | know (flag_mri); | |
1198 | ||
1199 | input_line_pointer = stop; | |
1200 | *stop = stopc; | |
041ff4dd | 1201 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1202 | ++input_line_pointer; |
1203 | } | |
1204 | ||
041ff4dd | 1205 | void |
39e6acbd | 1206 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1207 | { |
1208 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1209 | } | |
1210 | ||
1211 | /* Guts of .align directive. N is the power of two to which to align. | |
1212 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1213 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1214 | the maximum number of characters to skip when doing the alignment, | |
1215 | or 0 if there is no maximum. */ | |
1216 | ||
041ff4dd | 1217 | static void |
39e6acbd | 1218 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1219 | { |
ebeb9253 AM |
1220 | if (now_seg == absolute_section) |
1221 | { | |
1222 | if (fill != NULL) | |
1223 | while (len-- > 0) | |
1224 | if (*fill++ != '\0') | |
1225 | { | |
1226 | as_warn (_("ignoring fill value in absolute section")); | |
1227 | break; | |
1228 | } | |
1229 | fill = NULL; | |
1230 | len = 0; | |
1231 | } | |
1232 | ||
b8861cfb NS |
1233 | #ifdef md_flush_pending_output |
1234 | md_flush_pending_output (); | |
1235 | #endif | |
252b5132 RH |
1236 | #ifdef md_do_align |
1237 | md_do_align (n, fill, len, max, just_record_alignment); | |
1238 | #endif | |
1239 | ||
041ff4dd | 1240 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1241 | if (n != 0 && !need_pass_2) |
1242 | { | |
0a9ef439 RH |
1243 | if (fill == NULL) |
1244 | { | |
1245 | if (subseg_text_p (now_seg)) | |
1246 | frag_align_code (n, max); | |
1247 | else | |
1248 | frag_align (n, 0, max); | |
1249 | } | |
1250 | else if (len <= 1) | |
252b5132 RH |
1251 | frag_align (n, *fill, max); |
1252 | else | |
1253 | frag_align_pattern (n, fill, len, max); | |
1254 | } | |
1255 | ||
1256 | #ifdef md_do_align | |
a6bd2a4f | 1257 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1258 | #endif |
1259 | ||
bea9907b | 1260 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1261 | } |
1262 | ||
1263 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1264 | (in bytes). A negative ARG is the negative of the length of the | |
1265 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1266 | interpreted as the byte boundary, rather than the power of 2. */ | |
1267 | ||
9ebd302d AM |
1268 | #ifdef BFD_ASSEMBLER |
1269 | #define ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1270 | #else | |
1271 | #define ALIGN_LIMIT 15 | |
1272 | #endif | |
1273 | ||
252b5132 | 1274 | static void |
39e6acbd | 1275 | s_align (int arg, int bytes_p) |
252b5132 | 1276 | { |
b617dc20 | 1277 | unsigned int align_limit = ALIGN_LIMIT; |
9ebd302d | 1278 | unsigned int align; |
252b5132 RH |
1279 | char *stop = NULL; |
1280 | char stopc; | |
1281 | offsetT fill = 0; | |
1282 | int max; | |
1283 | int fill_p; | |
1284 | ||
1285 | if (flag_mri) | |
1286 | stop = mri_comment_field (&stopc); | |
1287 | ||
1288 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1289 | { | |
1290 | if (arg < 0) | |
1291 | align = 0; | |
1292 | else | |
041ff4dd | 1293 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1294 | } |
1295 | else | |
1296 | { | |
1297 | align = get_absolute_expression (); | |
1298 | SKIP_WHITESPACE (); | |
1299 | } | |
1300 | ||
1301 | if (bytes_p) | |
1302 | { | |
1303 | /* Convert to a power of 2. */ | |
1304 | if (align != 0) | |
1305 | { | |
1306 | unsigned int i; | |
1307 | ||
1308 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1309 | ; | |
1310 | if (align != 1) | |
0e389e77 | 1311 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1312 | |
252b5132 RH |
1313 | align = i; |
1314 | } | |
1315 | } | |
1316 | ||
b617dc20 | 1317 | if (align > align_limit) |
252b5132 | 1318 | { |
b617dc20 | 1319 | align = align_limit; |
0e389e77 | 1320 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1321 | } |
1322 | ||
1323 | if (*input_line_pointer != ',') | |
1324 | { | |
1325 | fill_p = 0; | |
1326 | max = 0; | |
1327 | } | |
1328 | else | |
1329 | { | |
1330 | ++input_line_pointer; | |
1331 | if (*input_line_pointer == ',') | |
1332 | fill_p = 0; | |
1333 | else | |
1334 | { | |
1335 | fill = get_absolute_expression (); | |
1336 | SKIP_WHITESPACE (); | |
1337 | fill_p = 1; | |
1338 | } | |
1339 | ||
1340 | if (*input_line_pointer != ',') | |
1341 | max = 0; | |
1342 | else | |
1343 | { | |
1344 | ++input_line_pointer; | |
1345 | max = get_absolute_expression (); | |
1346 | } | |
1347 | } | |
1348 | ||
041ff4dd | 1349 | if (!fill_p) |
252b5132 RH |
1350 | { |
1351 | if (arg < 0) | |
1352 | as_warn (_("expected fill pattern missing")); | |
1353 | do_align (align, (char *) NULL, 0, max); | |
1354 | } | |
1355 | else | |
1356 | { | |
1357 | int fill_len; | |
1358 | ||
1359 | if (arg >= 0) | |
1360 | fill_len = 1; | |
1361 | else | |
041ff4dd | 1362 | fill_len = -arg; |
252b5132 RH |
1363 | if (fill_len <= 1) |
1364 | { | |
1365 | char fill_char; | |
1366 | ||
1367 | fill_char = fill; | |
1368 | do_align (align, &fill_char, fill_len, max); | |
1369 | } | |
1370 | else | |
1371 | { | |
1372 | char ab[16]; | |
1373 | ||
1374 | if ((size_t) fill_len > sizeof ab) | |
1375 | abort (); | |
1376 | md_number_to_chars (ab, fill, fill_len); | |
1377 | do_align (align, ab, fill_len, max); | |
1378 | } | |
1379 | } | |
1380 | ||
1381 | demand_empty_rest_of_line (); | |
1382 | ||
1383 | if (flag_mri) | |
1384 | mri_comment_end (stop, stopc); | |
1385 | } | |
1386 | ||
1387 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1388 | align to a 4 byte boundary. */ | |
1389 | ||
041ff4dd | 1390 | void |
39e6acbd | 1391 | s_align_bytes (int arg) |
252b5132 RH |
1392 | { |
1393 | s_align (arg, 1); | |
1394 | } | |
1395 | ||
1396 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1397 | to a 2**4 boundary. */ | |
1398 | ||
041ff4dd | 1399 | void |
39e6acbd | 1400 | s_align_ptwo (int arg) |
252b5132 RH |
1401 | { |
1402 | s_align (arg, 0); | |
1403 | } | |
1404 | ||
caa32fe5 NC |
1405 | /* Switch in and out of alternate macro mode. */ |
1406 | ||
1407 | void | |
1408 | s_altmacro (int on) | |
1409 | { | |
1410 | demand_empty_rest_of_line (); | |
1411 | macro_set_alternate (on); | |
1412 | } | |
1413 | ||
e13bab5a AM |
1414 | symbolS * |
1415 | s_comm_internal (int param, | |
1416 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1417 | { |
e13bab5a AM |
1418 | char *name; |
1419 | char c; | |
1420 | char *p; | |
1421 | offsetT temp, size; | |
1422 | symbolS *symbolP = NULL; | |
252b5132 RH |
1423 | char *stop = NULL; |
1424 | char stopc; | |
e13bab5a | 1425 | expressionS exp; |
252b5132 RH |
1426 | |
1427 | if (flag_mri) | |
1428 | stop = mri_comment_field (&stopc); | |
1429 | ||
1430 | name = input_line_pointer; | |
1431 | c = get_symbol_end (); | |
041ff4dd | 1432 | /* Just after name is now '\0'. */ |
252b5132 RH |
1433 | p = input_line_pointer; |
1434 | *p = c; | |
0e389e77 AM |
1435 | |
1436 | if (name == p) | |
1437 | { | |
1438 | as_bad (_("expected symbol name")); | |
40a4d956 | 1439 | ignore_rest_of_line (); |
e13bab5a | 1440 | goto out; |
0e389e77 AM |
1441 | } |
1442 | ||
252b5132 | 1443 | SKIP_WHITESPACE (); |
f0e652b4 | 1444 | |
e13bab5a AM |
1445 | /* Accept an optional comma after the name. The comma used to be |
1446 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1447 | if (*input_line_pointer == ',') | |
1448 | input_line_pointer++; | |
1449 | ||
e13bab5a AM |
1450 | temp = get_absolute_expr (&exp); |
1451 | size = temp; | |
1452 | #ifdef BFD_ASSEMBLER | |
1453 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; | |
1454 | #endif | |
1455 | if (exp.X_op == O_absent) | |
252b5132 | 1456 | { |
e13bab5a | 1457 | as_bad (_("missing size expression")); |
252b5132 | 1458 | ignore_rest_of_line (); |
e13bab5a | 1459 | goto out; |
252b5132 | 1460 | } |
e13bab5a | 1461 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1462 | { |
e13bab5a | 1463 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1464 | ignore_rest_of_line (); |
e13bab5a | 1465 | goto out; |
252b5132 | 1466 | } |
f0e652b4 | 1467 | |
a207757e | 1468 | *p = 0; |
252b5132 | 1469 | symbolP = symbol_find_or_make (name); |
041ff4dd | 1470 | if (S_IS_DEFINED (symbolP) && !S_IS_COMMON (symbolP)) |
252b5132 | 1471 | { |
e13bab5a AM |
1472 | symbolP = NULL; |
1473 | as_bad (_("symbol `%s' is already defined"), name); | |
1474 | *p = c; | |
252b5132 | 1475 | ignore_rest_of_line (); |
e13bab5a | 1476 | goto out; |
252b5132 | 1477 | } |
f0e652b4 | 1478 | |
e13bab5a AM |
1479 | size = S_GET_VALUE (symbolP); |
1480 | if (size == 0) | |
1481 | size = temp; | |
1482 | else if (size != temp) | |
1483 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1484 | name, (long) size, (long) temp); | |
1485 | ||
1486 | *p = c; | |
1487 | if (comm_parse_extra != NULL) | |
1488 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1489 | else |
1490 | { | |
e13bab5a | 1491 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1492 | S_SET_EXTERNAL (symbolP); |
252b5132 | 1493 | #ifdef OBJ_VMS |
e13bab5a AM |
1494 | { |
1495 | extern int flag_one; | |
1496 | if (size == 0 || !flag_one) | |
1497 | S_GET_OTHER (symbolP) = const_flag; | |
1498 | } | |
1499 | #endif | |
1500 | } | |
252b5132 RH |
1501 | |
1502 | demand_empty_rest_of_line (); | |
e13bab5a | 1503 | out: |
252b5132 RH |
1504 | if (flag_mri) |
1505 | mri_comment_end (stop, stopc); | |
e13bab5a AM |
1506 | return symbolP; |
1507 | } | |
1508 | ||
1509 | void | |
1510 | s_comm (int ignore) | |
1511 | { | |
1512 | s_comm_internal (ignore, NULL); | |
1513 | } | |
252b5132 RH |
1514 | |
1515 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1516 | symbol with the appropriate name. We make s_space do the right | |
1517 | thing by increasing the size. */ | |
1518 | ||
1519 | void | |
39e6acbd | 1520 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1521 | { |
1522 | char *name; | |
1523 | char c; | |
1524 | char *alc = NULL; | |
1525 | symbolS *sym; | |
1526 | offsetT align; | |
1527 | char *stop = NULL; | |
1528 | char stopc; | |
1529 | ||
041ff4dd | 1530 | if (!flag_mri) |
252b5132 RH |
1531 | { |
1532 | s_comm (0); | |
1533 | return; | |
1534 | } | |
1535 | ||
1536 | stop = mri_comment_field (&stopc); | |
1537 | ||
1538 | SKIP_WHITESPACE (); | |
1539 | ||
1540 | name = input_line_pointer; | |
3882b010 | 1541 | if (!ISDIGIT (*name)) |
252b5132 RH |
1542 | c = get_symbol_end (); |
1543 | else | |
1544 | { | |
1545 | do | |
1546 | { | |
1547 | ++input_line_pointer; | |
1548 | } | |
3882b010 | 1549 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1550 | |
252b5132 RH |
1551 | c = *input_line_pointer; |
1552 | *input_line_pointer = '\0'; | |
1553 | ||
1554 | if (line_label != NULL) | |
1555 | { | |
1556 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1557 | + (input_line_pointer - name) | |
1558 | + 1); | |
1559 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1560 | name = alc; | |
1561 | } | |
1562 | } | |
1563 | ||
1564 | sym = symbol_find_or_make (name); | |
1565 | *input_line_pointer = c; | |
1566 | if (alc != NULL) | |
1567 | free (alc); | |
1568 | ||
1569 | if (*input_line_pointer != ',') | |
1570 | align = 0; | |
1571 | else | |
1572 | { | |
1573 | ++input_line_pointer; | |
1574 | align = get_absolute_expression (); | |
1575 | } | |
1576 | ||
041ff4dd | 1577 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1578 | { |
0e389e77 | 1579 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1580 | ignore_rest_of_line (); |
1581 | mri_comment_end (stop, stopc); | |
1582 | return; | |
1583 | } | |
1584 | ||
1585 | S_SET_EXTERNAL (sym); | |
1586 | mri_common_symbol = sym; | |
1587 | ||
1588 | #ifdef S_SET_ALIGN | |
1589 | if (align != 0) | |
1590 | S_SET_ALIGN (sym, align); | |
1591 | #endif | |
1592 | ||
1593 | if (line_label != NULL) | |
1594 | { | |
2b47531b ILT |
1595 | expressionS exp; |
1596 | exp.X_op = O_symbol; | |
1597 | exp.X_add_symbol = sym; | |
1598 | exp.X_add_number = 0; | |
1599 | symbol_set_value_expression (line_label, &exp); | |
1600 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1601 | S_SET_SEGMENT (line_label, expr_section); |
1602 | } | |
1603 | ||
1604 | /* FIXME: We just ignore the small argument, which distinguishes | |
1605 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1606 | ||
1607 | /* Ignore the type and hptype. */ | |
1608 | if (*input_line_pointer == ',') | |
1609 | input_line_pointer += 2; | |
1610 | if (*input_line_pointer == ',') | |
1611 | input_line_pointer += 2; | |
1612 | ||
1613 | demand_empty_rest_of_line (); | |
1614 | ||
1615 | mri_comment_end (stop, stopc); | |
1616 | } | |
1617 | ||
1618 | void | |
39e6acbd | 1619 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1620 | { |
1621 | segT section; | |
1622 | register int temp; | |
1623 | ||
1624 | temp = get_absolute_expression (); | |
1625 | if (flag_readonly_data_in_text) | |
1626 | { | |
1627 | section = text_section; | |
1628 | temp += 1000; | |
1629 | } | |
1630 | else | |
1631 | section = data_section; | |
1632 | ||
1633 | subseg_set (section, (subsegT) temp); | |
1634 | ||
1635 | #ifdef OBJ_VMS | |
1636 | const_flag = 0; | |
1637 | #endif | |
1638 | demand_empty_rest_of_line (); | |
1639 | } | |
1640 | ||
1641 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1642 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1643 | file name. This default definition may be overridden by the object | |
1644 | or CPU specific pseudo-ops. This function is also the default | |
1645 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1646 | .file. */ | |
1647 | ||
ecb4347a | 1648 | void |
f17c130b | 1649 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1650 | { |
1651 | #ifdef LISTING | |
1652 | if (listing) | |
1653 | listing_source_file (file); | |
1654 | #endif | |
1655 | register_dependency (file); | |
1656 | #ifdef obj_app_file | |
c04f5787 | 1657 | obj_app_file (file, appfile); |
ecb4347a DJ |
1658 | #endif |
1659 | } | |
1660 | ||
041ff4dd | 1661 | void |
39e6acbd | 1662 | s_app_file (int appfile) |
252b5132 RH |
1663 | { |
1664 | register char *s; | |
1665 | int length; | |
1666 | ||
041ff4dd | 1667 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1668 | if ((s = demand_copy_string (&length)) != 0) |
1669 | { | |
1670 | /* If this is a fake .appfile, a fake newline was inserted into | |
1671 | the buffer. Passing -2 to new_logical_line tells it to | |
1672 | account for it. */ | |
1673 | int may_omit | |
041ff4dd | 1674 | = (!new_logical_line (s, appfile ? -2 : -1) && appfile); |
252b5132 RH |
1675 | |
1676 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1677 | backquote. */ |
252b5132 RH |
1678 | if (flag_m68k_mri |
1679 | && *input_line_pointer == '\'' | |
1680 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1681 | ++input_line_pointer; | |
1682 | ||
1683 | demand_empty_rest_of_line (); | |
041ff4dd | 1684 | if (!may_omit) |
c04f5787 | 1685 | s_app_file_string (s, appfile); |
252b5132 RH |
1686 | } |
1687 | } | |
1688 | ||
1689 | /* Handle the .appline pseudo-op. This is automatically generated by | |
1690 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1691 | default definition may be overridden by the object or CPU specific | |
1692 | pseudo-ops. */ | |
1693 | ||
1694 | void | |
39e6acbd | 1695 | s_app_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1696 | { |
1697 | int l; | |
1698 | ||
1699 | /* The given number is that of the next line. */ | |
1700 | l = get_absolute_expression () - 1; | |
1701 | if (l < 0) | |
1702 | /* Some of the back ends can't deal with non-positive line numbers. | |
1703 | Besides, it's silly. */ | |
0e389e77 | 1704 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1705 | l + 1); |
252b5132 RH |
1706 | else |
1707 | { | |
1708 | new_logical_line ((char *) NULL, l); | |
1709 | #ifdef LISTING | |
1710 | if (listing) | |
1711 | listing_source_line (l); | |
1712 | #endif | |
1713 | } | |
1714 | demand_empty_rest_of_line (); | |
1715 | } | |
1716 | ||
1717 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1718 | read_a_source_file. */ | |
1719 | ||
1720 | void | |
39e6acbd | 1721 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1722 | { |
1723 | if (flag_mri) | |
1724 | { | |
1725 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 1726 | but we don't support that. */ |
252b5132 | 1727 | SKIP_WHITESPACE (); |
041ff4dd | 1728 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1729 | && *input_line_pointer != '*' |
1730 | && *input_line_pointer != '!') | |
1731 | as_warn (_("start address not supported")); | |
1732 | } | |
1733 | } | |
1734 | ||
1735 | /* Handle the .err pseudo-op. */ | |
1736 | ||
1737 | void | |
39e6acbd | 1738 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1739 | { |
1740 | as_bad (_(".err encountered")); | |
1741 | demand_empty_rest_of_line (); | |
d190d046 HPN |
1742 | } |
1743 | ||
1744 | /* Handle the .error and .warning pseudo-ops. */ | |
1745 | ||
1746 | void | |
1747 | s_errwarn (int err) | |
1748 | { | |
1749 | int len; | |
1750 | /* The purpose for the conditional assignment is not to | |
1751 | internationalize the directive itself, but that we need a | |
1752 | self-contained message, one that can be passed like the | |
1753 | demand_copy_C_string return value, and with no assumption on the | |
1754 | location of the name of the directive within the message. */ | |
1755 | char *msg | |
1756 | = (err ? _(".error directive invoked in source file") | |
1757 | : _(".warning directive invoked in source file")); | |
1758 | ||
1759 | if (!is_it_end_of_statement ()) | |
1760 | { | |
1761 | if (*input_line_pointer != '\"') | |
1762 | { | |
1763 | as_bad (_("%s argument must be a string"), | |
1764 | err ? ".error" : ".warning"); | |
40a4d956 | 1765 | ignore_rest_of_line (); |
d190d046 HPN |
1766 | return; |
1767 | } | |
1768 | ||
1769 | msg = demand_copy_C_string (&len); | |
1770 | if (msg == NULL) | |
1771 | return; | |
1772 | } | |
1773 | ||
1774 | if (err) | |
1775 | as_bad ("%s", msg); | |
1776 | else | |
1777 | as_warn ("%s", msg); | |
1778 | demand_empty_rest_of_line (); | |
252b5132 RH |
1779 | } |
1780 | ||
1781 | /* Handle the MRI fail pseudo-op. */ | |
1782 | ||
1783 | void | |
39e6acbd | 1784 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1785 | { |
1786 | offsetT temp; | |
1787 | char *stop = NULL; | |
1788 | char stopc; | |
1789 | ||
1790 | if (flag_mri) | |
1791 | stop = mri_comment_field (&stopc); | |
1792 | ||
1793 | temp = get_absolute_expression (); | |
1794 | if (temp >= 500) | |
1795 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1796 | else | |
1797 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1798 | ||
1799 | demand_empty_rest_of_line (); | |
1800 | ||
1801 | if (flag_mri) | |
1802 | mri_comment_end (stop, stopc); | |
1803 | } | |
1804 | ||
041ff4dd | 1805 | void |
39e6acbd | 1806 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1807 | { |
1808 | expressionS rep_exp; | |
1809 | long size = 1; | |
1810 | register long fill = 0; | |
1811 | char *p; | |
1812 | ||
1813 | #ifdef md_flush_pending_output | |
1814 | md_flush_pending_output (); | |
1815 | #endif | |
1816 | ||
1817 | get_known_segmented_expression (&rep_exp); | |
1818 | if (*input_line_pointer == ',') | |
1819 | { | |
1820 | input_line_pointer++; | |
1821 | size = get_absolute_expression (); | |
1822 | if (*input_line_pointer == ',') | |
1823 | { | |
1824 | input_line_pointer++; | |
1825 | fill = get_absolute_expression (); | |
1826 | } | |
1827 | } | |
1828 | ||
1829 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1830 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1831 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1832 | { | |
0e389e77 | 1833 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
1834 | size = BSD_FILL_SIZE_CROCK_8; |
1835 | } | |
1836 | if (size < 0) | |
1837 | { | |
0e389e77 | 1838 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
1839 | size = 0; |
1840 | } | |
1841 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1842 | { | |
1843 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 1844 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
1845 | size = 0; |
1846 | } | |
1847 | ||
1848 | if (size && !need_pass_2) | |
1849 | { | |
1850 | if (rep_exp.X_op == O_constant) | |
1851 | { | |
1852 | p = frag_var (rs_fill, (int) size, (int) size, | |
1853 | (relax_substateT) 0, (symbolS *) 0, | |
1854 | (offsetT) rep_exp.X_add_number, | |
1855 | (char *) 0); | |
1856 | } | |
1857 | else | |
1858 | { | |
1859 | /* We don't have a constant repeat count, so we can't use | |
1860 | rs_fill. We can get the same results out of rs_space, | |
1861 | but its argument is in bytes, so we must multiply the | |
1862 | repeat count by size. */ | |
1863 | ||
1864 | symbolS *rep_sym; | |
1865 | rep_sym = make_expr_symbol (&rep_exp); | |
1866 | if (size != 1) | |
1867 | { | |
1868 | expressionS size_exp; | |
1869 | size_exp.X_op = O_constant; | |
1870 | size_exp.X_add_number = size; | |
1871 | ||
1872 | rep_exp.X_op = O_multiply; | |
1873 | rep_exp.X_add_symbol = rep_sym; | |
1874 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1875 | rep_exp.X_add_number = 0; | |
1876 | rep_sym = make_expr_symbol (&rep_exp); | |
1877 | } | |
1878 | ||
1879 | p = frag_var (rs_space, (int) size, (int) size, | |
1880 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1881 | } | |
f0e652b4 | 1882 | |
252b5132 | 1883 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 1884 | |
252b5132 | 1885 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
1886 | flavoured AS. The following bizarre behaviour is to be |
1887 | compatible with above. I guess they tried to take up to 8 | |
1888 | bytes from a 4-byte expression and they forgot to sign | |
1889 | extend. */ | |
252b5132 RH |
1890 | #define BSD_FILL_SIZE_CROCK_4 (4) |
1891 | md_number_to_chars (p, (valueT) fill, | |
1892 | (size > BSD_FILL_SIZE_CROCK_4 | |
1893 | ? BSD_FILL_SIZE_CROCK_4 | |
1894 | : (int) size)); | |
1895 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
1896 | but emits no error message because it seems a legal thing to do. |
1897 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 1898 | compiler. */ |
252b5132 RH |
1899 | } |
1900 | demand_empty_rest_of_line (); | |
1901 | } | |
1902 | ||
041ff4dd | 1903 | void |
39e6acbd | 1904 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1905 | { |
1906 | char *name; | |
1907 | int c; | |
1908 | symbolS *symbolP; | |
1909 | char *stop = NULL; | |
1910 | char stopc; | |
1911 | ||
1912 | if (flag_mri) | |
1913 | stop = mri_comment_field (&stopc); | |
1914 | ||
1915 | do | |
1916 | { | |
1917 | name = input_line_pointer; | |
1918 | c = get_symbol_end (); | |
1919 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
1920 | S_SET_EXTERNAL (symbolP); |
1921 | ||
252b5132 RH |
1922 | *input_line_pointer = c; |
1923 | SKIP_WHITESPACE (); | |
58b5739a | 1924 | c = *input_line_pointer; |
252b5132 RH |
1925 | if (c == ',') |
1926 | { | |
1927 | input_line_pointer++; | |
1928 | SKIP_WHITESPACE (); | |
0e389e77 | 1929 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1930 | c = '\n'; |
1931 | } | |
1932 | } | |
1933 | while (c == ','); | |
1934 | ||
1935 | demand_empty_rest_of_line (); | |
1936 | ||
1937 | if (flag_mri) | |
1938 | mri_comment_end (stop, stopc); | |
1939 | } | |
1940 | ||
1941 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
1942 | ||
1943 | void | |
39e6acbd | 1944 | s_irp (int irpc) |
252b5132 | 1945 | { |
40a4d956 | 1946 | char *file, *eol; |
252b5132 RH |
1947 | unsigned int line; |
1948 | sb s; | |
1949 | const char *err; | |
1950 | sb out; | |
1951 | ||
1952 | as_where (&file, &line); | |
1953 | ||
1954 | sb_new (&s); | |
40a4d956 JB |
1955 | eol = find_end_of_line (input_line_pointer, 0); |
1956 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
1957 | input_line_pointer = eol; | |
252b5132 RH |
1958 | |
1959 | sb_new (&out); | |
1960 | ||
fea17916 | 1961 | err = expand_irp (irpc, 0, &s, &out, get_line_sb); |
252b5132 RH |
1962 | if (err != NULL) |
1963 | as_bad_where (file, line, "%s", err); | |
1964 | ||
1965 | sb_kill (&s); | |
1966 | ||
9f10757c | 1967 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
1968 | sb_kill (&out); |
1969 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1970 | } | |
1971 | ||
1972 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
1973 | the section to only be linked once. However, this is not supported | |
1974 | by most object file formats. This takes an optional argument, | |
1975 | which is what to do about duplicates. */ | |
1976 | ||
1977 | void | |
39e6acbd | 1978 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1979 | { |
1980 | enum linkonce_type type; | |
1981 | ||
1982 | SKIP_WHITESPACE (); | |
1983 | ||
1984 | type = LINKONCE_DISCARD; | |
1985 | ||
041ff4dd | 1986 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1987 | { |
1988 | char *s; | |
1989 | char c; | |
1990 | ||
1991 | s = input_line_pointer; | |
1992 | c = get_symbol_end (); | |
1993 | if (strcasecmp (s, "discard") == 0) | |
1994 | type = LINKONCE_DISCARD; | |
1995 | else if (strcasecmp (s, "one_only") == 0) | |
1996 | type = LINKONCE_ONE_ONLY; | |
1997 | else if (strcasecmp (s, "same_size") == 0) | |
1998 | type = LINKONCE_SAME_SIZE; | |
1999 | else if (strcasecmp (s, "same_contents") == 0) | |
2000 | type = LINKONCE_SAME_CONTENTS; | |
2001 | else | |
2002 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2003 | ||
2004 | *input_line_pointer = c; | |
2005 | } | |
2006 | ||
2007 | #ifdef obj_handle_link_once | |
2008 | obj_handle_link_once (type); | |
2009 | #else /* ! defined (obj_handle_link_once) */ | |
2010 | #ifdef BFD_ASSEMBLER | |
2011 | { | |
2012 | flagword flags; | |
2013 | ||
2014 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2015 | as_warn (_(".linkonce is not supported for this object file format")); | |
2016 | ||
2017 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2018 | flags |= SEC_LINK_ONCE; | |
2019 | switch (type) | |
2020 | { | |
2021 | default: | |
2022 | abort (); | |
2023 | case LINKONCE_DISCARD: | |
2024 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2025 | break; | |
2026 | case LINKONCE_ONE_ONLY: | |
2027 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2028 | break; | |
2029 | case LINKONCE_SAME_SIZE: | |
2030 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2031 | break; | |
2032 | case LINKONCE_SAME_CONTENTS: | |
2033 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2034 | break; | |
2035 | } | |
041ff4dd | 2036 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2037 | as_bad (_("bfd_set_section_flags: %s"), |
2038 | bfd_errmsg (bfd_get_error ())); | |
2039 | } | |
2040 | #else /* ! defined (BFD_ASSEMBLER) */ | |
2041 | as_warn (_(".linkonce is not supported for this object file format")); | |
2042 | #endif /* ! defined (BFD_ASSEMBLER) */ | |
2043 | #endif /* ! defined (obj_handle_link_once) */ | |
2044 | ||
2045 | demand_empty_rest_of_line (); | |
2046 | } | |
2047 | ||
e13bab5a AM |
2048 | void |
2049 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2050 | { |
e13bab5a | 2051 | char *pfrag; |
252b5132 RH |
2052 | segT current_seg = now_seg; |
2053 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2054 | segT bss_seg = bss_section; |
2055 | ||
252b5132 RH |
2056 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2057 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2058 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2059 | { | |
2060 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2061 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2062 | { |
2063 | bss_seg = subseg_new (".sbss", 1); | |
2064 | seg_info (bss_seg)->bss = 1; | |
2065 | #ifdef BFD_ASSEMBLER | |
041ff4dd | 2066 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2067 | as_warn (_("error setting flags for \".sbss\": %s"), |
2068 | bfd_errmsg (bfd_get_error ())); | |
2069 | #endif | |
2070 | } | |
2071 | } | |
2072 | #endif | |
e13bab5a | 2073 | subseg_set (bss_seg, 1); |
8684e216 | 2074 | |
e13bab5a | 2075 | if (align) |
041ff4dd | 2076 | { |
e13bab5a AM |
2077 | record_alignment (bss_seg, align); |
2078 | frag_align (align, 0, 0); | |
041ff4dd | 2079 | } |
252b5132 | 2080 | |
e13bab5a AM |
2081 | /* Detach from old frag. */ |
2082 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2083 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2084 | |
e13bab5a AM |
2085 | symbol_set_frag (symbolP, frag_now); |
2086 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2087 | *pfrag = 0; | |
f0e652b4 | 2088 | |
e13bab5a AM |
2089 | #ifdef S_SET_SIZE |
2090 | S_SET_SIZE (symbolP, size); | |
2091 | #endif | |
2092 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2093 | |
e13bab5a AM |
2094 | #ifdef OBJ_COFF |
2095 | /* The symbol may already have been created with a preceding | |
2096 | ".globl" directive -- be careful not to step on storage class | |
2097 | in that case. Otherwise, set it to static. */ | |
2098 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2099 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2100 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2101 | |
e13bab5a AM |
2102 | subseg_set (current_seg, current_subseg); |
2103 | } | |
f0e652b4 | 2104 | |
e13bab5a AM |
2105 | offsetT |
2106 | parse_align (int align_bytes) | |
2107 | { | |
2108 | expressionS exp; | |
2109 | addressT align; | |
252b5132 | 2110 | |
e13bab5a AM |
2111 | SKIP_WHITESPACE (); |
2112 | if (*input_line_pointer != ',') | |
2113 | { | |
2114 | no_align: | |
2115 | as_bad (_("expected alignment after size")); | |
2116 | ignore_rest_of_line (); | |
2117 | return -1; | |
2118 | } | |
f0e652b4 | 2119 | |
e13bab5a AM |
2120 | input_line_pointer++; |
2121 | SKIP_WHITESPACE (); | |
f0e652b4 | 2122 | |
e13bab5a AM |
2123 | align = get_absolute_expr (&exp); |
2124 | if (exp.X_op == O_absent) | |
2125 | goto no_align; | |
2126 | ||
2127 | if (!exp.X_unsigned) | |
2128 | { | |
2129 | as_warn (_("alignment negative; 0 assumed")); | |
2130 | align = 0; | |
041ff4dd | 2131 | } |
e13bab5a AM |
2132 | |
2133 | if (align_bytes && align != 0) | |
252b5132 | 2134 | { |
e13bab5a AM |
2135 | /* convert to a power of 2 alignment */ |
2136 | unsigned int alignp2 = 0; | |
2137 | while ((align & 1) == 0) | |
2138 | align >>= 1, ++alignp2; | |
2139 | if (align != 1) | |
252b5132 | 2140 | { |
e13bab5a AM |
2141 | as_bad (_("alignment not a power of 2")); |
2142 | ignore_rest_of_line (); | |
2143 | return -1; | |
252b5132 | 2144 | } |
e13bab5a | 2145 | align = alignp2; |
252b5132 | 2146 | } |
e13bab5a AM |
2147 | return align; |
2148 | } | |
252b5132 | 2149 | |
e13bab5a AM |
2150 | /* Called from s_comm_internal after symbol name and size have been |
2151 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2152 | 1 if this was a ".bss" directive which has a 3rd argument | |
2153 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2154 | with alignment in bytes. */ | |
252b5132 | 2155 | |
13c56984 | 2156 | symbolS * |
e13bab5a AM |
2157 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2158 | { | |
2159 | addressT align = 0; | |
252b5132 | 2160 | |
e13bab5a AM |
2161 | if (needs_align) |
2162 | { | |
2163 | align = parse_align (needs_align - 1); | |
2164 | if (align == (addressT) -1) | |
2165 | return NULL; | |
252b5132 RH |
2166 | } |
2167 | else | |
e13bab5a AM |
2168 | /* Assume some objects may require alignment on some systems. */ |
2169 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2170 | |
e13bab5a AM |
2171 | bss_alloc (symbolP, size, align); |
2172 | return symbolP; | |
041ff4dd | 2173 | } |
252b5132 RH |
2174 | |
2175 | void | |
39e6acbd | 2176 | s_lcomm (int needs_align) |
252b5132 | 2177 | { |
e13bab5a | 2178 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2179 | } |
2180 | ||
041ff4dd | 2181 | void |
39e6acbd | 2182 | s_lcomm_bytes (int needs_align) |
252b5132 | 2183 | { |
e13bab5a | 2184 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2185 | } |
2186 | ||
041ff4dd | 2187 | void |
39e6acbd | 2188 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2189 | { |
2190 | register char *name; | |
2191 | register char c; | |
2192 | register char *p; | |
2193 | expressionS exp; | |
2194 | register symbolS *symbolP; | |
2195 | ||
041ff4dd | 2196 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2197 | name = input_line_pointer; |
2198 | c = get_symbol_end (); | |
2199 | p = input_line_pointer; | |
2200 | *p = c; | |
0e389e77 AM |
2201 | |
2202 | if (name == p) | |
2203 | { | |
2204 | as_bad (_("expected symbol name")); | |
40a4d956 | 2205 | ignore_rest_of_line (); |
0e389e77 AM |
2206 | return; |
2207 | } | |
2208 | ||
252b5132 | 2209 | SKIP_WHITESPACE (); |
f0e652b4 | 2210 | |
252b5132 RH |
2211 | if (*input_line_pointer != ',') |
2212 | { | |
2213 | *p = 0; | |
0e389e77 | 2214 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2215 | *p = c; |
2216 | ignore_rest_of_line (); | |
2217 | return; | |
2218 | } | |
f0e652b4 | 2219 | |
252b5132 RH |
2220 | input_line_pointer++; |
2221 | expression (&exp); | |
f0e652b4 | 2222 | |
252b5132 RH |
2223 | if (exp.X_op != O_constant |
2224 | && exp.X_op != O_register) | |
2225 | { | |
2226 | as_bad (_("bad expression")); | |
2227 | ignore_rest_of_line (); | |
2228 | return; | |
2229 | } | |
f0e652b4 | 2230 | |
252b5132 RH |
2231 | *p = 0; |
2232 | symbolP = symbol_find_or_make (name); | |
2233 | ||
2234 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && | |
2235 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
2236 | those fields, and I can't see when they'd ever be tripped. I | |
2237 | don't think I understand why they were here so I may have | |
2238 | introduced a bug. As recently as 1.37 didn't have this test | |
041ff4dd | 2239 | anyway. xoxorich. */ |
252b5132 RH |
2240 | |
2241 | if (S_GET_SEGMENT (symbolP) == undefined_section | |
2242 | && S_GET_VALUE (symbolP) == 0) | |
2243 | { | |
2244 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2245 | keep the "external" bit. */ |
252b5132 RH |
2246 | S_SET_SEGMENT (symbolP, |
2247 | (exp.X_op == O_constant | |
2248 | ? absolute_section | |
2249 | : reg_section)); | |
2250 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2251 | } | |
2252 | else | |
2253 | { | |
0e389e77 | 2254 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2255 | } |
f0e652b4 | 2256 | |
252b5132 RH |
2257 | *p = c; |
2258 | demand_empty_rest_of_line (); | |
041ff4dd | 2259 | } |
252b5132 | 2260 | |
0822d075 NC |
2261 | /* Read a line into an sb. Returns the character that ended the line |
2262 | or zero if there are no more lines. */ | |
252b5132 RH |
2263 | |
2264 | static int | |
39e6acbd | 2265 | get_line_sb (sb *line) |
252b5132 | 2266 | { |
40a4d956 | 2267 | char *eol; |
252b5132 RH |
2268 | |
2269 | if (input_line_pointer[-1] == '\n') | |
2270 | bump_line_counters (); | |
2271 | ||
2272 | if (input_line_pointer >= buffer_limit) | |
2273 | { | |
2274 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2275 | if (buffer_limit == 0) | |
2276 | return 0; | |
2277 | } | |
2278 | ||
40a4d956 JB |
2279 | eol = find_end_of_line (input_line_pointer, flag_m68k_mri); |
2280 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); | |
2281 | input_line_pointer = eol; | |
f0e652b4 | 2282 | |
0822d075 NC |
2283 | /* Don't skip multiple end-of-line characters, because that breaks support |
2284 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2285 | characters but isn't. Instead just skip one end of line character and | |
2286 | return the character skipped so that the caller can re-insert it if | |
2287 | necessary. */ | |
40a4d956 | 2288 | return *input_line_pointer++; |
252b5132 RH |
2289 | } |
2290 | ||
fea17916 | 2291 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2292 | |
2293 | void | |
39e6acbd | 2294 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2295 | { |
40a4d956 | 2296 | char *file, *eol; |
252b5132 RH |
2297 | unsigned int line; |
2298 | sb s; | |
252b5132 RH |
2299 | const char *err; |
2300 | const char *name; | |
2301 | ||
2302 | as_where (&file, &line); | |
2303 | ||
2304 | sb_new (&s); | |
40a4d956 JB |
2305 | eol = find_end_of_line (input_line_pointer, 0); |
2306 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2307 | input_line_pointer = eol; | |
252b5132 | 2308 | |
252b5132 | 2309 | if (line_label != NULL) |
360e86f1 JB |
2310 | { |
2311 | sb label; | |
252b5132 | 2312 | |
360e86f1 JB |
2313 | sb_new (&label); |
2314 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2315 | err = define_macro (0, &s, &label, get_line_sb, file, line, &name); | |
2316 | sb_kill (&label); | |
2317 | } | |
2318 | else | |
2319 | err = define_macro (0, &s, NULL, get_line_sb, file, line, &name); | |
252b5132 | 2320 | if (err != NULL) |
02ddf156 | 2321 | as_bad_where (file, line, err, name); |
252b5132 RH |
2322 | else |
2323 | { | |
2324 | if (line_label != NULL) | |
2325 | { | |
5e75c3ab | 2326 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2327 | S_SET_VALUE (line_label, 0); |
2b47531b | 2328 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2329 | } |
2330 | ||
abd63a32 | 2331 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2332 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2333 | || (!flag_m68k_mri |
252b5132 RH |
2334 | && *name == '.' |
2335 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2336 | as_warn_where (file, |
2337 | line, | |
2338 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2339 | name); |
2340 | } | |
2341 | ||
2342 | sb_kill (&s); | |
2343 | } | |
2344 | ||
2345 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2346 | expansion. */ | |
2347 | ||
2348 | void | |
39e6acbd | 2349 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2350 | { |
2351 | cond_exit_macro (macro_nest); | |
2352 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2353 | } | |
2354 | ||
2355 | /* Switch in and out of MRI mode. */ | |
2356 | ||
2357 | void | |
39e6acbd | 2358 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2359 | { |
2360 | int on, old_flag; | |
2361 | ||
2362 | on = get_absolute_expression (); | |
2363 | old_flag = flag_mri; | |
2364 | if (on != 0) | |
2365 | { | |
2366 | flag_mri = 1; | |
2367 | #ifdef TC_M68K | |
2368 | flag_m68k_mri = 1; | |
2369 | #endif | |
2370 | macro_mri_mode (1); | |
2371 | } | |
2372 | else | |
2373 | { | |
2374 | flag_mri = 0; | |
abd63a32 | 2375 | #ifdef TC_M68K |
252b5132 | 2376 | flag_m68k_mri = 0; |
abd63a32 | 2377 | #endif |
252b5132 RH |
2378 | macro_mri_mode (0); |
2379 | } | |
2380 | ||
2381 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2382 | update the operator rankings. */ | |
2383 | expr_set_precedence (); | |
2384 | ||
2385 | #ifdef MRI_MODE_CHANGE | |
2386 | if (on != old_flag) | |
2387 | MRI_MODE_CHANGE (on); | |
2388 | #endif | |
2389 | ||
2390 | demand_empty_rest_of_line (); | |
2391 | } | |
2392 | ||
2393 | /* Handle changing the location counter. */ | |
2394 | ||
2395 | static void | |
39e6acbd | 2396 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 RH |
2397 | { |
2398 | if (segment != now_seg && segment != absolute_section) | |
0e389e77 | 2399 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2400 | |
2401 | if (now_seg == absolute_section) | |
2402 | { | |
2403 | if (fill != 0) | |
2404 | as_warn (_("ignoring fill value in absolute section")); | |
2405 | if (exp->X_op != O_constant) | |
2406 | { | |
2407 | as_bad (_("only constant offsets supported in absolute section")); | |
2408 | exp->X_add_number = 0; | |
2409 | } | |
2410 | abs_section_offset = exp->X_add_number; | |
2411 | } | |
2412 | else | |
2413 | { | |
2414 | char *p; | |
2289f85d AM |
2415 | symbolS *sym = exp->X_add_symbol; |
2416 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2417 | |
2289f85d AM |
2418 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2419 | { | |
2420 | /* Handle complex expressions. */ | |
2421 | sym = make_expr_symbol (exp); | |
2422 | off = 0; | |
2423 | } | |
2424 | ||
2425 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2426 | *p = fill; |
2427 | } | |
2428 | } | |
2429 | ||
041ff4dd | 2430 | void |
39e6acbd | 2431 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2432 | { |
2433 | register segT segment; | |
2434 | expressionS exp; | |
2435 | register long temp_fill; | |
2436 | ||
2437 | #ifdef md_flush_pending_output | |
2438 | md_flush_pending_output (); | |
2439 | #endif | |
2440 | ||
2441 | /* The m68k MRI assembler has a different meaning for .org. It | |
2442 | means to create an absolute section at a given address. We can't | |
2443 | support that--use a linker script instead. */ | |
2444 | if (flag_m68k_mri) | |
2445 | { | |
2446 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2447 | ignore_rest_of_line (); | |
2448 | return; | |
2449 | } | |
2450 | ||
2451 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2452 | thing as a sub-segment-relative origin. Any absolute origin is | |
2453 | given a warning, then assumed to be segment-relative. Any | |
2454 | segmented origin expression ("foo+42") had better be in the right | |
2455 | segment or the .org is ignored. | |
2456 | ||
2457 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2458 | we never know sub-segment sizes when we are reading code. BSD | |
2459 | will crash trying to emit negative numbers of filler bytes in | |
2460 | certain .orgs. We don't crash, but see as-write for that code. | |
2461 | ||
2462 | Don't make frag if need_pass_2==1. */ | |
2463 | segment = get_known_segmented_expression (&exp); | |
2464 | if (*input_line_pointer == ',') | |
2465 | { | |
2466 | input_line_pointer++; | |
2467 | temp_fill = get_absolute_expression (); | |
2468 | } | |
2469 | else | |
2470 | temp_fill = 0; | |
2471 | ||
2472 | if (!need_pass_2) | |
2473 | do_org (segment, &exp, temp_fill); | |
2474 | ||
2475 | demand_empty_rest_of_line (); | |
041ff4dd | 2476 | } |
252b5132 RH |
2477 | |
2478 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2479 | called by the obj-format routine which handles section changing | |
2480 | when in MRI mode. It will create a new section, and return it. It | |
2481 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
2482 | 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the | |
2483 | flags will be set in the section. */ | |
2484 | ||
2485 | void | |
39e6acbd | 2486 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2487 | { |
2488 | #ifdef TC_M68K | |
2489 | ||
2490 | char *name; | |
2491 | char c; | |
2492 | segT seg; | |
2493 | ||
2494 | SKIP_WHITESPACE (); | |
041ff4dd | 2495 | |
252b5132 | 2496 | name = input_line_pointer; |
3882b010 | 2497 | if (!ISDIGIT (*name)) |
252b5132 RH |
2498 | c = get_symbol_end (); |
2499 | else | |
2500 | { | |
2501 | do | |
2502 | { | |
2503 | ++input_line_pointer; | |
2504 | } | |
3882b010 | 2505 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2506 | |
252b5132 RH |
2507 | c = *input_line_pointer; |
2508 | *input_line_pointer = '\0'; | |
2509 | } | |
2510 | ||
2511 | name = xstrdup (name); | |
2512 | ||
2513 | *input_line_pointer = c; | |
2514 | ||
2515 | seg = subseg_new (name, 0); | |
2516 | ||
2517 | if (*input_line_pointer == ',') | |
2518 | { | |
2519 | int align; | |
2520 | ||
2521 | ++input_line_pointer; | |
2522 | align = get_absolute_expression (); | |
2523 | record_alignment (seg, align); | |
2524 | } | |
2525 | ||
2526 | *type = 'C'; | |
2527 | if (*input_line_pointer == ',') | |
2528 | { | |
2529 | c = *++input_line_pointer; | |
3882b010 | 2530 | c = TOUPPER (c); |
252b5132 RH |
2531 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2532 | *type = c; | |
2533 | else | |
2534 | as_bad (_("unrecognized section type")); | |
2535 | ++input_line_pointer; | |
2536 | ||
2537 | #ifdef BFD_ASSEMBLER | |
2538 | { | |
2539 | flagword flags; | |
2540 | ||
2541 | flags = SEC_NO_FLAGS; | |
2542 | if (*type == 'C') | |
2543 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2544 | else if (*type == 'D' || *type == 'M') | |
2545 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2546 | else if (*type == 'R') | |
2547 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2548 | if (flags != SEC_NO_FLAGS) | |
2549 | { | |
041ff4dd | 2550 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2551 | as_warn (_("error setting flags for \"%s\": %s"), |
2552 | bfd_section_name (stdoutput, seg), | |
2553 | bfd_errmsg (bfd_get_error ())); | |
2554 | } | |
2555 | } | |
2556 | #endif | |
2557 | } | |
2558 | ||
2559 | /* Ignore the HP type. */ | |
2560 | if (*input_line_pointer == ',') | |
2561 | input_line_pointer += 2; | |
2562 | ||
2563 | demand_empty_rest_of_line (); | |
2564 | ||
2565 | #else /* ! TC_M68K */ | |
2566 | #ifdef TC_I960 | |
2567 | ||
2568 | char *name; | |
2569 | char c; | |
2570 | segT seg; | |
2571 | ||
2572 | SKIP_WHITESPACE (); | |
2573 | ||
2574 | name = input_line_pointer; | |
2575 | c = get_symbol_end (); | |
2576 | ||
2577 | name = xstrdup (name); | |
2578 | ||
2579 | *input_line_pointer = c; | |
2580 | ||
2581 | seg = subseg_new (name, 0); | |
2582 | ||
2583 | if (*input_line_pointer != ',') | |
2584 | *type = 'C'; | |
2585 | else | |
2586 | { | |
2587 | char *sectype; | |
2588 | ||
2589 | ++input_line_pointer; | |
2590 | SKIP_WHITESPACE (); | |
2591 | sectype = input_line_pointer; | |
2592 | c = get_symbol_end (); | |
2593 | if (*sectype == '\0') | |
2594 | *type = 'C'; | |
2595 | else if (strcasecmp (sectype, "text") == 0) | |
2596 | *type = 'C'; | |
2597 | else if (strcasecmp (sectype, "data") == 0) | |
2598 | *type = 'D'; | |
2599 | else if (strcasecmp (sectype, "romdata") == 0) | |
2600 | *type = 'R'; | |
2601 | else | |
2602 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2603 | *input_line_pointer = c; | |
2604 | } | |
2605 | ||
2606 | if (*input_line_pointer == ',') | |
2607 | { | |
2608 | char *seccmd; | |
2609 | ||
2610 | ++input_line_pointer; | |
2611 | SKIP_WHITESPACE (); | |
2612 | seccmd = input_line_pointer; | |
2613 | c = get_symbol_end (); | |
2614 | if (strcasecmp (seccmd, "absolute") == 0) | |
2615 | { | |
2616 | as_bad (_("absolute sections are not supported")); | |
2617 | *input_line_pointer = c; | |
2618 | ignore_rest_of_line (); | |
2619 | return; | |
2620 | } | |
2621 | else if (strcasecmp (seccmd, "align") == 0) | |
2622 | { | |
2623 | int align; | |
2624 | ||
2625 | *input_line_pointer = c; | |
2626 | align = get_absolute_expression (); | |
2627 | record_alignment (seg, align); | |
2628 | } | |
2629 | else | |
2630 | { | |
2631 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2632 | *input_line_pointer = c; | |
2633 | } | |
2634 | } | |
2635 | ||
041ff4dd | 2636 | demand_empty_rest_of_line (); |
252b5132 RH |
2637 | |
2638 | #else /* ! TC_I960 */ | |
2639 | /* The MRI assembler seems to use different forms of .sect for | |
2640 | different targets. */ | |
2641 | as_bad ("MRI mode not supported for this target"); | |
2642 | ignore_rest_of_line (); | |
2643 | #endif /* ! TC_I960 */ | |
2644 | #endif /* ! TC_M68K */ | |
2645 | } | |
2646 | ||
2647 | /* Handle the .print pseudo-op. */ | |
2648 | ||
2649 | void | |
39e6acbd | 2650 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2651 | { |
2652 | char *s; | |
2653 | int len; | |
2654 | ||
2655 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
2656 | if (s != NULL) |
2657 | printf ("%s\n", s); | |
252b5132 RH |
2658 | demand_empty_rest_of_line (); |
2659 | } | |
2660 | ||
2661 | /* Handle the .purgem pseudo-op. */ | |
2662 | ||
2663 | void | |
39e6acbd | 2664 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2665 | { |
2666 | if (is_it_end_of_statement ()) | |
2667 | { | |
2668 | demand_empty_rest_of_line (); | |
2669 | return; | |
2670 | } | |
2671 | ||
2672 | do | |
2673 | { | |
2674 | char *name; | |
2675 | char c; | |
2676 | ||
2677 | SKIP_WHITESPACE (); | |
2678 | name = input_line_pointer; | |
2679 | c = get_symbol_end (); | |
2680 | delete_macro (name); | |
2681 | *input_line_pointer = c; | |
2682 | SKIP_WHITESPACE (); | |
2683 | } | |
2684 | while (*input_line_pointer++ == ','); | |
2685 | ||
2686 | --input_line_pointer; | |
2687 | demand_empty_rest_of_line (); | |
2688 | } | |
2689 | ||
057f53c1 | 2690 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 2691 | |
057f53c1 JB |
2692 | static void |
2693 | s_bad_end (int endr) | |
7f28ab9d | 2694 | { |
057f53c1 JB |
2695 | as_warn (_(".end%c encountered without preceeding %s"), |
2696 | endr ? 'r' : 'm', | |
2697 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
2698 | demand_empty_rest_of_line (); |
2699 | } | |
2700 | ||
2701 | /* Handle the .rept pseudo-op. */ | |
2702 | ||
252b5132 | 2703 | void |
39e6acbd | 2704 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2705 | { |
2706 | int count; | |
252b5132 RH |
2707 | |
2708 | count = get_absolute_expression (); | |
2709 | ||
041ff4dd | 2710 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2711 | } |
2712 | ||
2713 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2714 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2715 | |
2716 | void | |
39e6acbd | 2717 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
2718 | { |
2719 | sb one; | |
2720 | sb many; | |
2721 | ||
252b5132 | 2722 | sb_new (&one); |
041ff4dd | 2723 | if (!buffer_and_nest (start, end, &one, get_line_sb)) |
252b5132 | 2724 | { |
6dc19fc4 | 2725 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2726 | return; |
2727 | } | |
2728 | ||
2729 | sb_new (&many); | |
2730 | while (count-- > 0) | |
2731 | sb_add_sb (&many, &one); | |
2732 | ||
2733 | sb_kill (&one); | |
2734 | ||
9f10757c | 2735 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2736 | sb_kill (&many); |
2737 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2738 | } | |
2739 | ||
6dc19fc4 TW |
2740 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
2741 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 2742 | are properly nested. |
6dc19fc4 TW |
2743 | |
2744 | This function makes it easier to implement a premature "break" out of the | |
2745 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 2746 | such as line substitutions. */ |
6dc19fc4 TW |
2747 | |
2748 | void | |
39e6acbd | 2749 | end_repeat (int extra) |
6dc19fc4 TW |
2750 | { |
2751 | cond_exit_macro (macro_nest); | |
2752 | while (extra-- >= 0) | |
2753 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2754 | } | |
2755 | ||
be95a9c1 | 2756 | static void |
31d20a21 | 2757 | assign_symbol (char *name, int no_reassign) |
be95a9c1 AM |
2758 | { |
2759 | symbolS *symbolP; | |
2760 | ||
2761 | if (name[0] == '.' && name[1] == '\0') | |
2762 | { | |
2763 | /* Turn '. = mumble' into a .org mumble. */ | |
2764 | segT segment; | |
2765 | expressionS exp; | |
2766 | ||
2767 | segment = get_known_segmented_expression (&exp); | |
2768 | ||
2769 | if (!need_pass_2) | |
2770 | do_org (segment, &exp, 0); | |
2771 | ||
2772 | return; | |
2773 | } | |
2774 | ||
2775 | if ((symbolP = symbol_find (name)) == NULL | |
2776 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2777 | { | |
2778 | symbolP = symbol_find_or_make (name); | |
2779 | #ifndef NO_LISTING | |
2780 | /* When doing symbol listings, play games with dummy fragments living | |
2781 | outside the normal fragment chain to record the file and line info | |
2782 | for this symbol. */ | |
2783 | if (listing & LISTING_SYMBOLS) | |
2784 | { | |
2785 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 2786 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
2787 | dummy_frag->line = listing_tail; |
2788 | dummy_frag->fr_symbol = symbolP; | |
2789 | symbol_set_frag (symbolP, dummy_frag); | |
2790 | } | |
2791 | #endif | |
31d20a21 AM |
2792 | #ifdef OBJ_COFF |
2793 | /* "set" symbols are local unless otherwise specified. */ | |
2794 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
2795 | #endif |
2796 | } | |
2797 | ||
2798 | /* Permit register names to be redefined. */ | |
2799 | if (no_reassign | |
2800 | && S_IS_DEFINED (symbolP) | |
2801 | && S_GET_SEGMENT (symbolP) != reg_section) | |
2802 | as_bad (_("symbol `%s' is already defined"), name); | |
2803 | ||
2804 | pseudo_set (symbolP); | |
be95a9c1 AM |
2805 | } |
2806 | ||
252b5132 RH |
2807 | /* Handle the .equ, .equiv and .set directives. If EQUIV is 1, then |
2808 | this is .equiv, and it is an error if the symbol is already | |
2809 | defined. */ | |
2810 | ||
041ff4dd | 2811 | void |
39e6acbd | 2812 | s_set (int equiv) |
252b5132 | 2813 | { |
be95a9c1 AM |
2814 | char *name; |
2815 | char delim; | |
2816 | char *end_name; | |
252b5132 | 2817 | |
041ff4dd NC |
2818 | /* Especial apologies for the random logic: |
2819 | this just grew, and could be parsed much more simply! | |
2820 | Dean in haste. */ | |
252b5132 RH |
2821 | name = input_line_pointer; |
2822 | delim = get_symbol_end (); | |
2823 | end_name = input_line_pointer; | |
0e389e77 | 2824 | *end_name = delim; |
409d19c4 | 2825 | |
0e389e77 | 2826 | if (name == end_name) |
409d19c4 AM |
2827 | { |
2828 | as_bad (_("expected symbol name")); | |
40a4d956 | 2829 | ignore_rest_of_line (); |
409d19c4 AM |
2830 | return; |
2831 | } | |
2832 | ||
252b5132 RH |
2833 | SKIP_WHITESPACE (); |
2834 | ||
2835 | if (*input_line_pointer != ',') | |
2836 | { | |
2837 | *end_name = 0; | |
0e389e77 | 2838 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2839 | *end_name = delim; |
2840 | ignore_rest_of_line (); | |
2841 | return; | |
2842 | } | |
2843 | ||
2844 | input_line_pointer++; | |
2845 | *end_name = 0; | |
2846 | ||
be95a9c1 | 2847 | assign_symbol (name, equiv); |
252b5132 | 2848 | *end_name = delim; |
31d20a21 AM |
2849 | |
2850 | demand_empty_rest_of_line (); | |
041ff4dd | 2851 | } |
252b5132 | 2852 | |
041ff4dd | 2853 | void |
39e6acbd | 2854 | s_space (int mult) |
252b5132 RH |
2855 | { |
2856 | expressionS exp; | |
2857 | expressionS val; | |
2858 | char *p = 0; | |
2859 | char *stop = NULL; | |
2860 | char stopc; | |
2861 | int bytes; | |
2862 | ||
2863 | #ifdef md_flush_pending_output | |
2864 | md_flush_pending_output (); | |
2865 | #endif | |
2866 | ||
2867 | if (flag_mri) | |
2868 | stop = mri_comment_field (&stopc); | |
2869 | ||
2870 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
2871 | this is ds.b. */ | |
2872 | if (flag_m68k_mri && mult > 1) | |
2873 | { | |
2874 | if (now_seg == absolute_section) | |
2875 | { | |
2876 | abs_section_offset += abs_section_offset & 1; | |
2877 | if (line_label != NULL) | |
2878 | S_SET_VALUE (line_label, abs_section_offset); | |
2879 | } | |
2880 | else if (mri_common_symbol != NULL) | |
2881 | { | |
2882 | valueT val; | |
2883 | ||
2884 | val = S_GET_VALUE (mri_common_symbol); | |
2885 | if ((val & 1) != 0) | |
2886 | { | |
2887 | S_SET_VALUE (mri_common_symbol, val + 1); | |
2888 | if (line_label != NULL) | |
2889 | { | |
2b47531b ILT |
2890 | expressionS *symexp; |
2891 | ||
2892 | symexp = symbol_get_value_expression (line_label); | |
2893 | know (symexp->X_op == O_symbol); | |
2894 | know (symexp->X_add_symbol == mri_common_symbol); | |
2895 | symexp->X_add_number += 1; | |
252b5132 RH |
2896 | } |
2897 | } | |
2898 | } | |
2899 | else | |
2900 | { | |
2901 | do_align (1, (char *) NULL, 0, 0); | |
2902 | if (line_label != NULL) | |
2903 | { | |
2b47531b | 2904 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
2905 | S_SET_VALUE (line_label, frag_now_fix ()); |
2906 | } | |
2907 | } | |
2908 | } | |
2909 | ||
2910 | bytes = mult; | |
2911 | ||
2912 | expression (&exp); | |
2913 | ||
2914 | SKIP_WHITESPACE (); | |
2915 | if (*input_line_pointer == ',') | |
2916 | { | |
2917 | ++input_line_pointer; | |
2918 | expression (&val); | |
2919 | } | |
2920 | else | |
2921 | { | |
2922 | val.X_op = O_constant; | |
2923 | val.X_add_number = 0; | |
2924 | } | |
2925 | ||
2926 | if (val.X_op != O_constant | |
2927 | || val.X_add_number < - 0x80 | |
2928 | || val.X_add_number > 0xff | |
2929 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
2930 | { | |
2931 | if (exp.X_op != O_constant) | |
0e389e77 | 2932 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
2933 | else |
2934 | { | |
2935 | offsetT i; | |
2936 | ||
2937 | if (mult == 0) | |
2938 | mult = 1; | |
2939 | bytes = mult * exp.X_add_number; | |
2940 | for (i = 0; i < exp.X_add_number; i++) | |
2941 | emit_expr (&val, mult); | |
2942 | } | |
2943 | } | |
2944 | else | |
2945 | { | |
2946 | if (exp.X_op == O_constant) | |
2947 | { | |
2948 | long repeat; | |
2949 | ||
2950 | repeat = exp.X_add_number; | |
2951 | if (mult) | |
2952 | repeat *= mult; | |
2953 | bytes = repeat; | |
2954 | if (repeat <= 0) | |
2955 | { | |
2d150871 RO |
2956 | if (!flag_mri) |
2957 | as_warn (_(".space repeat count is zero, ignored")); | |
2958 | else if (repeat < 0) | |
252b5132 RH |
2959 | as_warn (_(".space repeat count is negative, ignored")); |
2960 | goto getout; | |
2961 | } | |
2962 | ||
2963 | /* If we are in the absolute section, just bump the offset. */ | |
2964 | if (now_seg == absolute_section) | |
2965 | { | |
2966 | abs_section_offset += repeat; | |
2967 | goto getout; | |
2968 | } | |
2969 | ||
2970 | /* If we are secretly in an MRI common section, then | |
2971 | creating space just increases the size of the common | |
2972 | symbol. */ | |
2973 | if (mri_common_symbol != NULL) | |
2974 | { | |
2975 | S_SET_VALUE (mri_common_symbol, | |
2976 | S_GET_VALUE (mri_common_symbol) + repeat); | |
2977 | goto getout; | |
2978 | } | |
2979 | ||
2980 | if (!need_pass_2) | |
2981 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
2982 | (offsetT) repeat, (char *) 0); | |
2983 | } | |
2984 | else | |
2985 | { | |
2986 | if (now_seg == absolute_section) | |
2987 | { | |
2988 | as_bad (_("space allocation too complex in absolute section")); | |
2989 | subseg_set (text_section, 0); | |
2990 | } | |
f0e652b4 | 2991 | |
252b5132 RH |
2992 | if (mri_common_symbol != NULL) |
2993 | { | |
2994 | as_bad (_("space allocation too complex in common section")); | |
2995 | mri_common_symbol = NULL; | |
2996 | } | |
f0e652b4 | 2997 | |
252b5132 RH |
2998 | if (!need_pass_2) |
2999 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3000 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3001 | } | |
3002 | ||
3003 | if (p) | |
3004 | *p = val.X_add_number; | |
3005 | } | |
3006 | ||
3007 | getout: | |
3008 | ||
3009 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3010 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3011 | or dcb.b. */ | |
3012 | if (flag_mri && (bytes & 1) != 0) | |
3013 | mri_pending_align = 1; | |
3014 | ||
3015 | demand_empty_rest_of_line (); | |
3016 | ||
3017 | if (flag_mri) | |
3018 | mri_comment_end (stop, stopc); | |
3019 | } | |
3020 | ||
3021 | /* This is like s_space, but the value is a floating point number with | |
3022 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3023 | friends. */ | |
3024 | ||
3025 | void | |
39e6acbd | 3026 | s_float_space (int float_type) |
252b5132 RH |
3027 | { |
3028 | offsetT count; | |
3029 | int flen; | |
3030 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3031 | char *stop = NULL; | |
3032 | char stopc; | |
3033 | ||
3034 | if (flag_mri) | |
3035 | stop = mri_comment_field (&stopc); | |
3036 | ||
3037 | count = get_absolute_expression (); | |
3038 | ||
3039 | SKIP_WHITESPACE (); | |
3040 | if (*input_line_pointer != ',') | |
3041 | { | |
3042 | as_bad (_("missing value")); | |
3043 | ignore_rest_of_line (); | |
3044 | if (flag_mri) | |
3045 | mri_comment_end (stop, stopc); | |
3046 | return; | |
3047 | } | |
3048 | ||
3049 | ++input_line_pointer; | |
3050 | ||
3051 | SKIP_WHITESPACE (); | |
3052 | ||
3053 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3054 | * letter is legal. */ | |
3055 | if (input_line_pointer[0] == '0' | |
3882b010 | 3056 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3057 | input_line_pointer += 2; |
3058 | ||
3059 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3060 | with the exact digits specified. */ | |
3061 | if (input_line_pointer[0] == ':') | |
3062 | { | |
3063 | flen = hex_float (float_type, temp); | |
3064 | if (flen < 0) | |
3065 | { | |
3066 | ignore_rest_of_line (); | |
3067 | if (flag_mri) | |
3068 | mri_comment_end (stop, stopc); | |
3069 | return; | |
3070 | } | |
3071 | } | |
3072 | else | |
3073 | { | |
3074 | char *err; | |
3075 | ||
3076 | err = md_atof (float_type, temp, &flen); | |
3077 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3078 | know (flen > 0); | |
3079 | if (err) | |
3080 | { | |
0e389e77 | 3081 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3082 | ignore_rest_of_line (); |
3083 | if (flag_mri) | |
3084 | mri_comment_end (stop, stopc); | |
3085 | return; | |
3086 | } | |
3087 | } | |
3088 | ||
3089 | while (--count >= 0) | |
3090 | { | |
3091 | char *p; | |
3092 | ||
3093 | p = frag_more (flen); | |
3094 | memcpy (p, temp, (unsigned int) flen); | |
3095 | } | |
3096 | ||
3097 | demand_empty_rest_of_line (); | |
3098 | ||
3099 | if (flag_mri) | |
3100 | mri_comment_end (stop, stopc); | |
3101 | } | |
3102 | ||
3103 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3104 | ||
3105 | void | |
39e6acbd | 3106 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3107 | { |
3108 | char *stop = NULL; | |
3109 | char stopc; | |
3110 | ||
3111 | if (flag_mri) | |
3112 | stop = mri_comment_field (&stopc); | |
3113 | abs_section_offset = get_absolute_expression (); | |
3114 | subseg_set (absolute_section, 0); | |
3115 | demand_empty_rest_of_line (); | |
3116 | if (flag_mri) | |
3117 | mri_comment_end (stop, stopc); | |
3118 | } | |
3119 | ||
3120 | void | |
39e6acbd | 3121 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3122 | { |
3123 | register int temp; | |
3124 | ||
3125 | temp = get_absolute_expression (); | |
3126 | subseg_set (text_section, (subsegT) temp); | |
3127 | demand_empty_rest_of_line (); | |
3128 | #ifdef OBJ_VMS | |
3129 | const_flag &= ~IN_DEFAULT_SECTION; | |
3130 | #endif | |
041ff4dd | 3131 | } |
252b5132 | 3132 | \f |
c95b35a9 NS |
3133 | |
3134 | /* Verify that we are at the end of a line. If not, issue an error and | |
3135 | skip to EOL. */ | |
3136 | ||
041ff4dd | 3137 | void |
39e6acbd | 3138 | demand_empty_rest_of_line (void) |
252b5132 RH |
3139 | { |
3140 | SKIP_WHITESPACE (); | |
3141 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3142 | input_line_pointer++; |
252b5132 | 3143 | else |
252b5132 | 3144 | { |
3882b010 | 3145 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3146 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3147 | *input_line_pointer); |
252b5132 | 3148 | else |
c95b35a9 | 3149 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3150 | *input_line_pointer); |
c95b35a9 | 3151 | ignore_rest_of_line (); |
252b5132 | 3152 | } |
c95b35a9 NS |
3153 | |
3154 | /* Return pointing just after end-of-line. */ | |
3155 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3156 | } | |
3157 | ||
3158 | /* Silently advance to the end of line. Use this after already having | |
3159 | issued an error about something bad. */ | |
3160 | ||
3161 | void | |
3162 | ignore_rest_of_line (void) | |
3163 | { | |
3164 | while (input_line_pointer < buffer_limit | |
3165 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3166 | input_line_pointer++; | |
f0e652b4 | 3167 | |
041ff4dd NC |
3168 | input_line_pointer++; |
3169 | ||
3170 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3171 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3172 | } | |
3173 | ||
be95a9c1 AM |
3174 | /* Sets frag for given symbol to zero_address_frag, except when the |
3175 | symbol frag is already set to a dummy listing frag. */ | |
3176 | ||
3177 | static void | |
3178 | set_zero_frag (symbolS *symbolP) | |
3179 | { | |
3180 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3181 | symbol_set_frag (symbolP, &zero_address_frag); | |
3182 | } | |
3183 | ||
041ff4dd | 3184 | /* In: Pointer to a symbol. |
d6415f6c | 3185 | Input_line_pointer->expression. |
f0e652b4 | 3186 | |
041ff4dd | 3187 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3188 | Tried to set symbol to value of expression. |
3189 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3190 | |
252b5132 | 3191 | void |
39e6acbd | 3192 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3193 | { |
3194 | expressionS exp; | |
be95a9c1 | 3195 | segT seg; |
252b5132 RH |
3196 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
3197 | int ext; | |
3198 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3199 | ||
041ff4dd | 3200 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3201 | |
ce34c373 | 3202 | (void) expression (&exp); |
252b5132 RH |
3203 | |
3204 | if (exp.X_op == O_illegal) | |
0e389e77 | 3205 | as_bad (_("illegal expression")); |
252b5132 | 3206 | else if (exp.X_op == O_absent) |
0e389e77 | 3207 | as_bad (_("missing expression")); |
252b5132 RH |
3208 | else if (exp.X_op == O_big) |
3209 | { | |
3210 | if (exp.X_add_number > 0) | |
0e389e77 | 3211 | as_bad (_("bignum invalid")); |
252b5132 | 3212 | else |
0e389e77 | 3213 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3214 | } |
3215 | else if (exp.X_op == O_subtract | |
252b5132 | 3216 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3217 | && (symbol_get_frag (exp.X_add_symbol) |
3218 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3219 | { |
3220 | exp.X_op = O_constant; | |
3221 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3222 | - S_GET_VALUE (exp.X_op_symbol)); | |
3223 | } | |
3224 | ||
be95a9c1 AM |
3225 | if (symbol_section_p (symbolP)) |
3226 | { | |
3227 | as_bad ("attempt to set value of section symbol"); | |
3228 | return; | |
3229 | } | |
3230 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3231 | ext = S_IS_EXTERNAL (symbolP); | |
3232 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3233 | ||
252b5132 RH |
3234 | switch (exp.X_op) |
3235 | { | |
3236 | case O_illegal: | |
3237 | case O_absent: | |
3238 | case O_big: | |
3239 | exp.X_add_number = 0; | |
3240 | /* Fall through. */ | |
3241 | case O_constant: | |
3242 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3243 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3244 | set_zero_frag (symbolP); |
252b5132 RH |
3245 | break; |
3246 | ||
3247 | case O_register: | |
3248 | S_SET_SEGMENT (symbolP, reg_section); | |
3249 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3250 | set_zero_frag (symbolP); |
252b5132 RH |
3251 | break; |
3252 | ||
3253 | case O_symbol: | |
be95a9c1 AM |
3254 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3255 | /* For x=undef+const, create an expression symbol. | |
3256 | For x=x+const, just update x except when x is an undefined symbol | |
3257 | For x=defined+const, evaluate x. */ | |
3258 | if (symbolP == exp.X_add_symbol | |
3259 | && (seg != undefined_section | |
3260 | || !symbol_constant_p (symbolP))) | |
3261 | { | |
3262 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3263 | break; | |
3264 | } | |
3265 | else if (seg != undefined_section) | |
252b5132 RH |
3266 | { |
3267 | symbolS *s = exp.X_add_symbol; | |
3268 | ||
60938e80 L |
3269 | if (S_IS_COMMON (s)) |
3270 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3271 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3272 | ||
be95a9c1 AM |
3273 | S_SET_SEGMENT (symbolP, seg); |
3274 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3275 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3276 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3277 | break; |
252b5132 | 3278 | } |
be95a9c1 | 3279 | /* Fall thru */ |
252b5132 RH |
3280 | |
3281 | default: | |
ce34c373 | 3282 | /* The value is some complex expression. |
be95a9c1 AM |
3283 | Set segment and frag back to that of a newly created symbol. */ |
3284 | S_SET_SEGMENT (symbolP, undefined_section); | |
2b47531b | 3285 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3286 | set_zero_frag (symbolP); |
252b5132 RH |
3287 | break; |
3288 | } | |
be95a9c1 AM |
3289 | |
3290 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3291 | if (ext) | |
3292 | S_SET_EXTERNAL (symbolP); | |
3293 | else | |
3294 | S_CLEAR_EXTERNAL (symbolP); | |
3295 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
252b5132 RH |
3296 | } |
3297 | \f | |
d6415f6c | 3298 | /* cons() |
f0e652b4 | 3299 | |
041ff4dd NC |
3300 | CONStruct more frag of .bytes, or .words etc. |
3301 | Should need_pass_2 be 1 then emit no frag(s). | |
3302 | This understands EXPRESSIONS. | |
f0e652b4 | 3303 | |
041ff4dd | 3304 | Bug (?) |
f0e652b4 | 3305 | |
041ff4dd NC |
3306 | This has a split personality. We use expression() to read the |
3307 | value. We can detect if the value won't fit in a byte or word. | |
3308 | But we can't detect if expression() discarded significant digits | |
3309 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3310 | |
3311 | /* Select a parser for cons expressions. */ | |
3312 | ||
3313 | /* Some targets need to parse the expression in various fancy ways. | |
3314 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3315 | (for example, the HPPA does this). Otherwise, you can define | |
3316 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3317 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3318 | are defined, which is the normal case, then only simple expressions | |
3319 | are permitted. */ | |
3320 | ||
abd63a32 | 3321 | #ifdef TC_M68K |
252b5132 | 3322 | static void |
39e6acbd | 3323 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3324 | #endif |
252b5132 RH |
3325 | |
3326 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3327 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3328 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3329 | static void |
39e6acbd | 3330 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3331 | #endif |
3332 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3333 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3334 | static void | |
39e6acbd | 3335 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3336 | #endif |
3337 | ||
3338 | /* If we haven't gotten one yet, just call expression. */ | |
3339 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3340 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3341 | #endif | |
3342 | #endif | |
3343 | ||
cdfbf930 | 3344 | void |
b41b1f95 L |
3345 | do_parse_cons_expression (expressionS *exp, |
3346 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3347 | { |
3348 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3349 | } | |
3350 | ||
3351 | ||
041ff4dd NC |
3352 | /* Worker to do .byte etc statements. |
3353 | Clobbers input_line_pointer and checks end-of-line. */ | |
3354 | ||
3355 | static void | |
39e6acbd KH |
3356 | cons_worker (register int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
3357 | int rva) | |
252b5132 RH |
3358 | { |
3359 | int c; | |
3360 | expressionS exp; | |
3361 | char *stop = NULL; | |
3362 | char stopc; | |
3363 | ||
3364 | #ifdef md_flush_pending_output | |
3365 | md_flush_pending_output (); | |
3366 | #endif | |
3367 | ||
3368 | if (flag_mri) | |
3369 | stop = mri_comment_field (&stopc); | |
3370 | ||
3371 | if (is_it_end_of_statement ()) | |
3372 | { | |
3373 | demand_empty_rest_of_line (); | |
3374 | if (flag_mri) | |
3375 | mri_comment_end (stop, stopc); | |
3376 | return; | |
3377 | } | |
3378 | ||
cc1bc22a AM |
3379 | #ifdef TC_ADDRESS_BYTES |
3380 | if (nbytes == 0) | |
3381 | nbytes = TC_ADDRESS_BYTES (); | |
3382 | #endif | |
3383 | ||
252b5132 RH |
3384 | #ifdef md_cons_align |
3385 | md_cons_align (nbytes); | |
3386 | #endif | |
3387 | ||
3388 | c = 0; | |
3389 | do | |
3390 | { | |
abd63a32 | 3391 | #ifdef TC_M68K |
252b5132 RH |
3392 | if (flag_m68k_mri) |
3393 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3394 | else | |
abd63a32 | 3395 | #endif |
252b5132 RH |
3396 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
3397 | ||
3398 | if (rva) | |
3399 | { | |
3400 | if (exp.X_op == O_symbol) | |
3401 | exp.X_op = O_symbol_rva; | |
3402 | else | |
3403 | as_fatal (_("rva without symbol")); | |
3404 | } | |
3405 | emit_expr (&exp, (unsigned int) nbytes); | |
3406 | ++c; | |
3407 | } | |
3408 | while (*input_line_pointer++ == ','); | |
3409 | ||
3410 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3411 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3412 | or dcb.b. */ | |
3413 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3414 | mri_pending_align = 1; | |
3415 | ||
041ff4dd | 3416 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3417 | |
3418 | demand_empty_rest_of_line (); | |
3419 | ||
3420 | if (flag_mri) | |
3421 | mri_comment_end (stop, stopc); | |
3422 | } | |
3423 | ||
252b5132 | 3424 | void |
39e6acbd | 3425 | cons (int size) |
252b5132 RH |
3426 | { |
3427 | cons_worker (size, 0); | |
3428 | } | |
3429 | ||
041ff4dd | 3430 | void |
39e6acbd | 3431 | s_rva (int size) |
252b5132 RH |
3432 | { |
3433 | cons_worker (size, 1); | |
3434 | } | |
3435 | ||
3436 | /* Put the contents of expression EXP into the object file using | |
3437 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
3438 | ||
3439 | void | |
39e6acbd | 3440 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
3441 | { |
3442 | operatorT op; | |
3443 | register char *p; | |
3444 | valueT extra_digit = 0; | |
3445 | ||
3446 | /* Don't do anything if we are going to make another pass. */ | |
3447 | if (need_pass_2) | |
3448 | return; | |
3449 | ||
ed7d5d1a AM |
3450 | dot_value = frag_now_fix (); |
3451 | ||
252b5132 RH |
3452 | #ifndef NO_LISTING |
3453 | #ifdef OBJ_ELF | |
3454 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
3455 | appear as a four byte positive constant in the .line section, | |
3456 | followed by a 2 byte 0xffff. Look for that case here. */ | |
3457 | { | |
3458 | static int dwarf_line = -1; | |
3459 | ||
3460 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
3461 | dwarf_line = -1; | |
3462 | else if (dwarf_line >= 0 | |
3463 | && nbytes == 2 | |
3464 | && exp->X_op == O_constant | |
3465 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
3466 | listing_source_line ((unsigned int) dwarf_line); | |
3467 | else if (nbytes == 4 | |
3468 | && exp->X_op == O_constant | |
3469 | && exp->X_add_number >= 0) | |
3470 | dwarf_line = exp->X_add_number; | |
3471 | else | |
3472 | dwarf_line = -1; | |
3473 | } | |
3474 | ||
3475 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
3476 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
3477 | AT_sibling (0x12) followed by a four byte address of the sibling | |
3478 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
3479 | file. We look for that case here. */ | |
3480 | { | |
3481 | static int dwarf_file = 0; | |
3482 | ||
3483 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
3484 | dwarf_file = 0; | |
3485 | else if (dwarf_file == 0 | |
3486 | && nbytes == 2 | |
3487 | && exp->X_op == O_constant | |
3488 | && exp->X_add_number == 0x11) | |
3489 | dwarf_file = 1; | |
3490 | else if (dwarf_file == 1 | |
3491 | && nbytes == 2 | |
3492 | && exp->X_op == O_constant | |
3493 | && exp->X_add_number == 0x12) | |
3494 | dwarf_file = 2; | |
3495 | else if (dwarf_file == 2 | |
3496 | && nbytes == 4) | |
3497 | dwarf_file = 3; | |
3498 | else if (dwarf_file == 3 | |
3499 | && nbytes == 2 | |
3500 | && exp->X_op == O_constant | |
3501 | && exp->X_add_number == 0x38) | |
3502 | dwarf_file = 4; | |
3503 | else | |
3504 | dwarf_file = 0; | |
3505 | ||
3506 | /* The variable dwarf_file_string tells stringer that the string | |
3507 | may be the name of the source file. */ | |
3508 | if (dwarf_file == 4) | |
3509 | dwarf_file_string = 1; | |
3510 | else | |
3511 | dwarf_file_string = 0; | |
3512 | } | |
3513 | #endif | |
3514 | #endif | |
3515 | ||
3516 | if (check_eh_frame (exp, &nbytes)) | |
3517 | return; | |
3518 | ||
3519 | op = exp->X_op; | |
3520 | ||
3521 | /* Allow `.word 0' in the absolute section. */ | |
3522 | if (now_seg == absolute_section) | |
3523 | { | |
3524 | if (op != O_constant || exp->X_add_number != 0) | |
3525 | as_bad (_("attempt to store value in absolute section")); | |
3526 | abs_section_offset += nbytes; | |
3527 | return; | |
3528 | } | |
3529 | ||
3530 | /* Handle a negative bignum. */ | |
3531 | if (op == O_uminus | |
3532 | && exp->X_add_number == 0 | |
2b47531b ILT |
3533 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
3534 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
3535 | { |
3536 | int i; | |
3537 | unsigned long carry; | |
3538 | ||
2b47531b | 3539 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
3540 | |
3541 | /* Negate the bignum: one's complement each digit and add 1. */ | |
3542 | carry = 1; | |
3543 | for (i = 0; i < exp->X_add_number; i++) | |
3544 | { | |
3545 | unsigned long next; | |
3546 | ||
041ff4dd | 3547 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
3548 | & LITTLENUM_MASK) |
3549 | + carry); | |
3550 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3551 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3552 | } | |
3553 | ||
3554 | /* We can ignore any carry out, because it will be handled by | |
3555 | extra_digit if it is needed. */ | |
3556 | ||
3557 | extra_digit = (valueT) -1; | |
3558 | op = O_big; | |
3559 | } | |
3560 | ||
3561 | if (op == O_absent || op == O_illegal) | |
3562 | { | |
3563 | as_warn (_("zero assumed for missing expression")); | |
3564 | exp->X_add_number = 0; | |
3565 | op = O_constant; | |
3566 | } | |
3567 | else if (op == O_big && exp->X_add_number <= 0) | |
3568 | { | |
0e389e77 | 3569 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3570 | exp->X_add_number = 0; |
3571 | op = O_constant; | |
3572 | } | |
3573 | else if (op == O_register) | |
3574 | { | |
3575 | as_warn (_("register value used as expression")); | |
3576 | op = O_constant; | |
3577 | } | |
3578 | ||
3579 | p = frag_more ((int) nbytes); | |
3580 | ||
3581 | #ifndef WORKING_DOT_WORD | |
3582 | /* If we have the difference of two symbols in a word, save it on | |
3583 | the broken_words list. See the code in write.c. */ | |
3584 | if (op == O_subtract && nbytes == 2) | |
3585 | { | |
3586 | struct broken_word *x; | |
3587 | ||
3588 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3589 | x->next_broken_word = broken_words; | |
3590 | broken_words = x; | |
3591 | x->seg = now_seg; | |
3592 | x->subseg = now_subseg; | |
3593 | x->frag = frag_now; | |
3594 | x->word_goes_here = p; | |
3595 | x->dispfrag = 0; | |
3596 | x->add = exp->X_add_symbol; | |
3597 | x->sub = exp->X_op_symbol; | |
3598 | x->addnum = exp->X_add_number; | |
3599 | x->added = 0; | |
dc59a897 | 3600 | x->use_jump = 0; |
252b5132 RH |
3601 | new_broken_words++; |
3602 | return; | |
3603 | } | |
3604 | #endif | |
3605 | ||
3606 | /* If we have an integer, but the number of bytes is too large to | |
3607 | pass to md_number_to_chars, handle it as a bignum. */ | |
3608 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3609 | { | |
e5604d79 RS |
3610 | extra_digit = exp->X_unsigned ? 0 : -1; |
3611 | convert_to_bignum (exp); | |
3612 | op = O_big; | |
252b5132 RH |
3613 | } |
3614 | ||
3615 | if (op == O_constant) | |
3616 | { | |
3617 | register valueT get; | |
3618 | register valueT use; | |
3619 | register valueT mask; | |
3620 | valueT hibit; | |
3621 | register valueT unmask; | |
3622 | ||
3623 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 3624 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
3625 | if (nbytes >= sizeof (valueT)) |
3626 | { | |
3627 | mask = 0; | |
3628 | if (nbytes > sizeof (valueT)) | |
3629 | hibit = 0; | |
3630 | else | |
3631 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3632 | } | |
3633 | else | |
3634 | { | |
041ff4dd | 3635 | /* Don't store these bits. */ |
252b5132 RH |
3636 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
3637 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3638 | } | |
3639 | ||
041ff4dd | 3640 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
3641 | |
3642 | #ifdef NEVER | |
3643 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 3644 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
3645 | #endif |
3646 | ||
3647 | get = exp->X_add_number; | |
3648 | use = get & unmask; | |
3649 | if ((get & mask) != 0 | |
3650 | && ((get & mask) != mask | |
3651 | || (get & hibit) == 0)) | |
041ff4dd | 3652 | { /* Leading bits contain both 0s & 1s. */ |
0e389e77 | 3653 | as_warn (_("value 0x%lx truncated to 0x%lx"), |
252b5132 RH |
3654 | (unsigned long) get, (unsigned long) use); |
3655 | } | |
041ff4dd | 3656 | /* Put bytes in right order. */ |
252b5132 RH |
3657 | md_number_to_chars (p, use, (int) nbytes); |
3658 | } | |
3659 | else if (op == O_big) | |
3660 | { | |
3661 | unsigned int size; | |
3662 | LITTLENUM_TYPE *nums; | |
3663 | ||
3664 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
3665 | ||
3666 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
3667 | if (nbytes < size) | |
3668 | { | |
0e389e77 | 3669 | as_warn (_("bignum truncated to %d bytes"), nbytes); |
252b5132 RH |
3670 | size = nbytes; |
3671 | } | |
3672 | ||
3673 | if (target_big_endian) | |
3674 | { | |
3675 | while (nbytes > size) | |
3676 | { | |
3677 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3678 | nbytes -= CHARS_PER_LITTLENUM; | |
3679 | p += CHARS_PER_LITTLENUM; | |
3680 | } | |
3681 | ||
3682 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 3683 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3684 | { |
3685 | --nums; | |
3686 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3687 | size -= CHARS_PER_LITTLENUM; | |
3688 | p += CHARS_PER_LITTLENUM; | |
3689 | } | |
3690 | } | |
3691 | else | |
3692 | { | |
3693 | nums = generic_bignum; | |
ceac3f62 | 3694 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3695 | { |
3696 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3697 | ++nums; | |
3698 | size -= CHARS_PER_LITTLENUM; | |
3699 | p += CHARS_PER_LITTLENUM; | |
3700 | nbytes -= CHARS_PER_LITTLENUM; | |
3701 | } | |
3702 | ||
ceac3f62 | 3703 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3704 | { |
3705 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3706 | nbytes -= CHARS_PER_LITTLENUM; | |
3707 | p += CHARS_PER_LITTLENUM; | |
3708 | } | |
3709 | } | |
3710 | } | |
3711 | else | |
3712 | { | |
3713 | memset (p, 0, nbytes); | |
3714 | ||
3715 | /* Now we need to generate a fixS to record the symbol value. | |
3716 | This is easy for BFD. For other targets it can be more | |
3717 | complex. For very complex cases (currently, the HPPA and | |
3718 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
3719 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
3720 | the name of the reloc code that should be stored in the fixS. | |
3721 | If neither is defined, the code uses NO_RELOC if it is | |
3722 | defined, and otherwise uses 0. */ | |
3723 | ||
3724 | #ifdef BFD_ASSEMBLER | |
3725 | #ifdef TC_CONS_FIX_NEW | |
3726 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3727 | #else | |
3728 | { | |
3729 | bfd_reloc_code_real_type r; | |
3730 | ||
3731 | switch (nbytes) | |
3732 | { | |
3733 | case 1: | |
3734 | r = BFD_RELOC_8; | |
3735 | break; | |
3736 | case 2: | |
3737 | r = BFD_RELOC_16; | |
3738 | break; | |
3739 | case 4: | |
3740 | r = BFD_RELOC_32; | |
3741 | break; | |
3742 | case 8: | |
3743 | r = BFD_RELOC_64; | |
3744 | break; | |
3745 | default: | |
3746 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
3747 | r = BFD_RELOC_32; | |
3748 | break; | |
3749 | } | |
3750 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, | |
3751 | 0, r); | |
3752 | } | |
3753 | #endif | |
3754 | #else | |
3755 | #ifdef TC_CONS_FIX_NEW | |
3756 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3757 | #else | |
3758 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
3759 | it is defined, otherwise use NO_RELOC if it is defined, | |
3760 | otherwise use 0. */ | |
3761 | #ifndef TC_CONS_RELOC | |
3762 | #ifdef NO_RELOC | |
3763 | #define TC_CONS_RELOC NO_RELOC | |
3764 | #else | |
3765 | #define TC_CONS_RELOC 0 | |
3766 | #endif | |
3767 | #endif | |
3768 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, | |
3769 | TC_CONS_RELOC); | |
3770 | #endif /* TC_CONS_FIX_NEW */ | |
3771 | #endif /* BFD_ASSEMBLER */ | |
3772 | } | |
3773 | } | |
3774 | \f | |
3775 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3776 | ||
3777 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
3778 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3779 | then pack them all together. We do a little better in that we allow | |
3780 | them in words, longs, etc. and we'll pack them in target byte order | |
3781 | for you. | |
3782 | ||
47eebc20 | 3783 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
3784 | entirely fit, put it in the next unit. Overflowing the bitfield is |
3785 | explicitly *not* even a warning. The bitwidth should be considered | |
3786 | a "mask". | |
3787 | ||
3788 | To use this function the tc-XXX.h file should define | |
3789 | BITFIELD_CONS_EXPRESSIONS. */ | |
3790 | ||
041ff4dd | 3791 | static void |
252b5132 RH |
3792 | parse_bitfield_cons (exp, nbytes) |
3793 | expressionS *exp; | |
3794 | unsigned int nbytes; | |
3795 | { | |
3796 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3797 | char *hold = input_line_pointer; | |
3798 | ||
3799 | (void) expression (exp); | |
3800 | ||
3801 | if (*input_line_pointer == ':') | |
041ff4dd NC |
3802 | { |
3803 | /* Bitfields. */ | |
252b5132 RH |
3804 | long value = 0; |
3805 | ||
3806 | for (;;) | |
3807 | { | |
3808 | unsigned long width; | |
3809 | ||
3810 | if (*input_line_pointer != ':') | |
3811 | { | |
3812 | input_line_pointer = hold; | |
3813 | break; | |
041ff4dd | 3814 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
3815 | |
3816 | /* In the general case, we can't allow | |
3817 | full expressions with symbol | |
3818 | differences and such. The relocation | |
3819 | entries for symbols not defined in this | |
3820 | assembly would require arbitrary field | |
3821 | widths, positions, and masks which most | |
3822 | of our current object formats don't | |
3823 | support. | |
3824 | ||
3825 | In the specific case where a symbol | |
3826 | *is* defined in this assembly, we | |
3827 | *could* build fixups and track it, but | |
3828 | this could lead to confusion for the | |
3829 | backends. I'm lazy. I'll take any | |
3830 | SEG_ABSOLUTE. I think that means that | |
3831 | you can use a previous .set or | |
041ff4dd | 3832 | .equ type symbol. xoxorich. */ |
252b5132 RH |
3833 | |
3834 | if (exp->X_op == O_absent) | |
3835 | { | |
3836 | as_warn (_("using a bit field width of zero")); | |
3837 | exp->X_add_number = 0; | |
3838 | exp->X_op = O_constant; | |
041ff4dd | 3839 | } /* Implied zero width bitfield. */ |
252b5132 RH |
3840 | |
3841 | if (exp->X_op != O_constant) | |
3842 | { | |
3843 | *input_line_pointer = '\0'; | |
3844 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
3845 | *input_line_pointer = ':'; | |
3846 | demand_empty_rest_of_line (); | |
3847 | return; | |
041ff4dd | 3848 | } /* Too complex. */ |
252b5132 RH |
3849 | |
3850 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
3851 | { | |
3852 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
3853 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
3854 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 3855 | } /* Too big. */ |
252b5132 RH |
3856 | |
3857 | if (width > bits_available) | |
3858 | { | |
3859 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
3860 | input_line_pointer = hold; | |
3861 | exp->X_add_number = value; | |
3862 | break; | |
041ff4dd | 3863 | } /* Won't fit. */ |
252b5132 | 3864 | |
ef99799a KH |
3865 | /* Skip ':'. */ |
3866 | hold = ++input_line_pointer; | |
252b5132 RH |
3867 | |
3868 | (void) expression (exp); | |
3869 | if (exp->X_op != O_constant) | |
3870 | { | |
3871 | char cache = *input_line_pointer; | |
3872 | ||
3873 | *input_line_pointer = '\0'; | |
3874 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
3875 | *input_line_pointer = cache; | |
3876 | demand_empty_rest_of_line (); | |
3877 | return; | |
041ff4dd | 3878 | } /* Too complex. */ |
252b5132 RH |
3879 | |
3880 | value |= ((~(-1 << width) & exp->X_add_number) | |
3881 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
3882 | ||
3883 | if ((bits_available -= width) == 0 | |
3884 | || is_it_end_of_statement () | |
3885 | || *input_line_pointer != ',') | |
3886 | { | |
3887 | break; | |
041ff4dd | 3888 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
3889 | |
3890 | hold = ++input_line_pointer; | |
3891 | (void) expression (exp); | |
041ff4dd | 3892 | } |
252b5132 RH |
3893 | |
3894 | exp->X_add_number = value; | |
3895 | exp->X_op = O_constant; | |
3896 | exp->X_unsigned = 1; | |
041ff4dd NC |
3897 | } |
3898 | } | |
252b5132 RH |
3899 | |
3900 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
3901 | \f | |
3902 | /* Handle an MRI style string expression. */ | |
3903 | ||
abd63a32 | 3904 | #ifdef TC_M68K |
252b5132 RH |
3905 | static void |
3906 | parse_mri_cons (exp, nbytes) | |
3907 | expressionS *exp; | |
3908 | unsigned int nbytes; | |
3909 | { | |
3910 | if (*input_line_pointer != '\'' | |
3911 | && (input_line_pointer[1] != '\'' | |
3912 | || (*input_line_pointer != 'A' | |
3913 | && *input_line_pointer != 'E'))) | |
3914 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3915 | else | |
3916 | { | |
3917 | unsigned int scan; | |
3918 | unsigned int result = 0; | |
3919 | ||
3920 | /* An MRI style string. Cut into as many bytes as will fit into | |
3921 | a nbyte chunk, left justify if necessary, and separate with | |
3922 | commas so we can try again later. */ | |
3923 | if (*input_line_pointer == 'A') | |
3924 | ++input_line_pointer; | |
3925 | else if (*input_line_pointer == 'E') | |
3926 | { | |
3927 | as_bad (_("EBCDIC constants are not supported")); | |
3928 | ++input_line_pointer; | |
3929 | } | |
3930 | ||
3931 | input_line_pointer++; | |
3932 | for (scan = 0; scan < nbytes; scan++) | |
3933 | { | |
3934 | if (*input_line_pointer == '\'') | |
3935 | { | |
3936 | if (input_line_pointer[1] == '\'') | |
3937 | { | |
3938 | input_line_pointer++; | |
3939 | } | |
3940 | else | |
3941 | break; | |
3942 | } | |
3943 | result = (result << 8) | (*input_line_pointer++); | |
3944 | } | |
3945 | ||
041ff4dd | 3946 | /* Left justify. */ |
252b5132 RH |
3947 | while (scan < nbytes) |
3948 | { | |
3949 | result <<= 8; | |
3950 | scan++; | |
3951 | } | |
f0e652b4 | 3952 | |
041ff4dd | 3953 | /* Create correct expression. */ |
252b5132 RH |
3954 | exp->X_op = O_constant; |
3955 | exp->X_add_number = result; | |
f0e652b4 | 3956 | |
041ff4dd | 3957 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
3958 | if (input_line_pointer[0] != '\'' || |
3959 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
3960 | { | |
3961 | input_line_pointer -= 2; | |
3962 | input_line_pointer[0] = ','; | |
3963 | input_line_pointer[1] = '\''; | |
3964 | } | |
3965 | else | |
3966 | input_line_pointer++; | |
3967 | } | |
3968 | } | |
abd63a32 | 3969 | #endif /* TC_M68K */ |
252b5132 RH |
3970 | \f |
3971 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3972 | ||
3973 | /* Parse a repeat expression for cons. This is used by the MIPS | |
3974 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
3975 | object file COUNT times. | |
3976 | ||
3977 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
3978 | ||
3979 | static void | |
3980 | parse_repeat_cons (exp, nbytes) | |
3981 | expressionS *exp; | |
3982 | unsigned int nbytes; | |
3983 | { | |
3984 | expressionS count; | |
3985 | register int i; | |
3986 | ||
3987 | expression (exp); | |
3988 | ||
3989 | if (*input_line_pointer != ':') | |
3990 | { | |
3991 | /* No repeat count. */ | |
3992 | return; | |
3993 | } | |
3994 | ||
3995 | ++input_line_pointer; | |
3996 | expression (&count); | |
3997 | if (count.X_op != O_constant | |
3998 | || count.X_add_number <= 0) | |
3999 | { | |
0e389e77 | 4000 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4001 | return; |
4002 | } | |
4003 | ||
4004 | /* The cons function is going to output this expression once. So we | |
4005 | output it count - 1 times. */ | |
4006 | for (i = count.X_add_number - 1; i > 0; i--) | |
4007 | emit_expr (exp, nbytes); | |
4008 | } | |
4009 | ||
4010 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4011 | \f | |
4012 | /* Parse a floating point number represented as a hex constant. This | |
4013 | permits users to specify the exact bits they want in the floating | |
4014 | point number. */ | |
4015 | ||
4016 | static int | |
39e6acbd | 4017 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4018 | { |
4019 | int length; | |
4020 | int i; | |
4021 | ||
4022 | switch (float_type) | |
4023 | { | |
4024 | case 'f': | |
4025 | case 'F': | |
4026 | case 's': | |
4027 | case 'S': | |
4028 | length = 4; | |
4029 | break; | |
4030 | ||
4031 | case 'd': | |
4032 | case 'D': | |
4033 | case 'r': | |
4034 | case 'R': | |
4035 | length = 8; | |
4036 | break; | |
4037 | ||
4038 | case 'x': | |
4039 | case 'X': | |
4040 | length = 12; | |
4041 | break; | |
4042 | ||
4043 | case 'p': | |
4044 | case 'P': | |
4045 | length = 12; | |
4046 | break; | |
4047 | ||
4048 | default: | |
0e389e77 | 4049 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4050 | return -1; |
4051 | } | |
4052 | ||
4053 | /* It would be nice if we could go through expression to parse the | |
4054 | hex constant, but if we get a bignum it's a pain to sort it into | |
4055 | the buffer correctly. */ | |
4056 | i = 0; | |
4057 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4058 | { | |
4059 | int d; | |
4060 | ||
4061 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4062 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4063 | if (*input_line_pointer == '_') |
4064 | { | |
4065 | ++input_line_pointer; | |
4066 | continue; | |
4067 | } | |
4068 | ||
4069 | if (i >= length) | |
4070 | { | |
0e389e77 | 4071 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4072 | return -1; |
4073 | } | |
4074 | d = hex_value (*input_line_pointer) << 4; | |
4075 | ++input_line_pointer; | |
4076 | while (*input_line_pointer == '_') | |
4077 | ++input_line_pointer; | |
4078 | if (hex_p (*input_line_pointer)) | |
4079 | { | |
4080 | d += hex_value (*input_line_pointer); | |
4081 | ++input_line_pointer; | |
4082 | } | |
4083 | if (target_big_endian) | |
4084 | bytes[i] = d; | |
4085 | else | |
4086 | bytes[length - i - 1] = d; | |
4087 | ++i; | |
4088 | } | |
4089 | ||
4090 | if (i < length) | |
4091 | { | |
4092 | if (target_big_endian) | |
4093 | memset (bytes + i, 0, length - i); | |
4094 | else | |
4095 | memset (bytes, 0, length - i); | |
4096 | } | |
4097 | ||
4098 | return length; | |
4099 | } | |
4100 | ||
d6415f6c | 4101 | /* float_cons() |
f0e652b4 | 4102 | |
041ff4dd NC |
4103 | CONStruct some more frag chars of .floats .ffloats etc. |
4104 | Makes 0 or more new frags. | |
4105 | If need_pass_2 == 1, no frags are emitted. | |
4106 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4107 | |
041ff4dd NC |
4108 | A floating constant is defined by atof_generic(), except it is preceded |
4109 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4110 | reading, I decided to be incompatible. This always tries to give you | |
4111 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4112 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4113 | a choice of 2 flavours of noise according to which of 2 floating-point |
4114 | scanners you directed AS to use. | |
f0e652b4 | 4115 | |
041ff4dd | 4116 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4117 | |
4118 | void | |
39e6acbd KH |
4119 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
4120 | register int float_type /* 'f':.ffloat ... 'F':.float ... */) | |
252b5132 RH |
4121 | { |
4122 | register char *p; | |
041ff4dd NC |
4123 | int length; /* Number of chars in an object. */ |
4124 | register char *err; /* Error from scanning floating literal. */ | |
252b5132 RH |
4125 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4126 | ||
4127 | if (is_it_end_of_statement ()) | |
4128 | { | |
4129 | demand_empty_rest_of_line (); | |
4130 | return; | |
4131 | } | |
4132 | ||
4133 | #ifdef md_flush_pending_output | |
4134 | md_flush_pending_output (); | |
4135 | #endif | |
4136 | ||
4137 | do | |
4138 | { | |
041ff4dd | 4139 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4140 | SKIP_WHITESPACE (); |
4141 | ||
4142 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4143 | letter is legal. Someone may invent a "z" format and this routine |
4144 | has no use for such information. Lusers beware: you get | |
4145 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4146 | if (input_line_pointer[0] == '0' |
3882b010 | 4147 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4148 | input_line_pointer += 2; |
4149 | ||
4150 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4151 | point with the exact digits specified. */ |
252b5132 RH |
4152 | if (input_line_pointer[0] == ':') |
4153 | { | |
4154 | ++input_line_pointer; | |
4155 | length = hex_float (float_type, temp); | |
4156 | if (length < 0) | |
4157 | { | |
4158 | ignore_rest_of_line (); | |
4159 | return; | |
4160 | } | |
4161 | } | |
4162 | else | |
4163 | { | |
4164 | err = md_atof (float_type, temp, &length); | |
4165 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
4166 | know (length > 0); | |
4167 | if (err) | |
4168 | { | |
0e389e77 | 4169 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4170 | ignore_rest_of_line (); |
4171 | return; | |
4172 | } | |
4173 | } | |
4174 | ||
4175 | if (!need_pass_2) | |
4176 | { | |
4177 | int count; | |
4178 | ||
4179 | count = 1; | |
4180 | ||
4181 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4182 | if (*input_line_pointer == ':') | |
4183 | { | |
4184 | expressionS count_exp; | |
4185 | ||
4186 | ++input_line_pointer; | |
4187 | expression (&count_exp); | |
f0e652b4 | 4188 | |
252b5132 RH |
4189 | if (count_exp.X_op != O_constant |
4190 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4191 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4192 | else |
4193 | count = count_exp.X_add_number; | |
4194 | } | |
4195 | #endif | |
4196 | ||
4197 | while (--count >= 0) | |
4198 | { | |
4199 | p = frag_more (length); | |
4200 | memcpy (p, temp, (unsigned int) length); | |
4201 | } | |
4202 | } | |
4203 | SKIP_WHITESPACE (); | |
4204 | } | |
4205 | while (*input_line_pointer++ == ','); | |
4206 | ||
041ff4dd NC |
4207 | /* Put terminator back into stream. */ |
4208 | --input_line_pointer; | |
252b5132 | 4209 | demand_empty_rest_of_line (); |
041ff4dd | 4210 | } |
252b5132 | 4211 | \f |
041ff4dd | 4212 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4213 | |
4214 | static inline int | |
39e6acbd | 4215 | sizeof_sleb128 (offsetT value) |
252b5132 RH |
4216 | { |
4217 | register int size = 0; | |
4218 | register unsigned byte; | |
4219 | ||
4220 | do | |
4221 | { | |
4222 | byte = (value & 0x7f); | |
4223 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4224 | Fortunately, we can structure things so that the extra work reduces | |
4225 | to a noop on systems that do things "properly". */ | |
4226 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4227 | size += 1; | |
4228 | } | |
4229 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4230 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4231 | ||
4232 | return size; | |
4233 | } | |
4234 | ||
4235 | static inline int | |
39e6acbd | 4236 | sizeof_uleb128 (valueT value) |
252b5132 RH |
4237 | { |
4238 | register int size = 0; | |
4239 | register unsigned byte; | |
4240 | ||
4241 | do | |
4242 | { | |
4243 | byte = (value & 0x7f); | |
4244 | value >>= 7; | |
4245 | size += 1; | |
4246 | } | |
4247 | while (value != 0); | |
4248 | ||
4249 | return size; | |
4250 | } | |
4251 | ||
4252 | int | |
39e6acbd | 4253 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4254 | { |
4255 | if (sign) | |
4256 | return sizeof_sleb128 ((offsetT) value); | |
4257 | else | |
4258 | return sizeof_uleb128 (value); | |
4259 | } | |
4260 | ||
4261 | /* Output a LEB128 value. */ | |
4262 | ||
4263 | static inline int | |
39e6acbd | 4264 | output_sleb128 (char *p, offsetT value) |
252b5132 RH |
4265 | { |
4266 | register char *orig = p; | |
4267 | register int more; | |
4268 | ||
4269 | do | |
4270 | { | |
4271 | unsigned byte = (value & 0x7f); | |
4272 | ||
4273 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4274 | Fortunately, we can structure things so that the extra work reduces | |
4275 | to a noop on systems that do things "properly". */ | |
4276 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4277 | ||
4278 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4279 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4280 | if (more) | |
4281 | byte |= 0x80; | |
4282 | ||
4283 | *p++ = byte; | |
4284 | } | |
4285 | while (more); | |
4286 | ||
4287 | return p - orig; | |
4288 | } | |
4289 | ||
4290 | static inline int | |
39e6acbd | 4291 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4292 | { |
4293 | char *orig = p; | |
4294 | ||
4295 | do | |
4296 | { | |
4297 | unsigned byte = (value & 0x7f); | |
4298 | value >>= 7; | |
4299 | if (value != 0) | |
4300 | /* More bytes to follow. */ | |
4301 | byte |= 0x80; | |
4302 | ||
4303 | *p++ = byte; | |
4304 | } | |
4305 | while (value != 0); | |
4306 | ||
4307 | return p - orig; | |
4308 | } | |
4309 | ||
4310 | int | |
39e6acbd | 4311 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4312 | { |
4313 | if (sign) | |
4314 | return output_sleb128 (p, (offsetT) value); | |
4315 | else | |
4316 | return output_uleb128 (p, value); | |
4317 | } | |
4318 | ||
4319 | /* Do the same for bignums. We combine sizeof with output here in that | |
4320 | we don't output for NULL values of P. It isn't really as critical as | |
4321 | for "normal" values that this be streamlined. */ | |
4322 | ||
6d4d30bb | 4323 | static inline int |
39e6acbd | 4324 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4325 | { |
4326 | char *orig = p; | |
4327 | valueT val = 0; | |
4328 | int loaded = 0; | |
4329 | unsigned byte; | |
4330 | ||
4331 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4332 | while (size > 1 |
4333 | && bignum[size - 1] == LITTLENUM_MASK | |
4334 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4335 | size--; |
4336 | ||
4337 | do | |
4338 | { | |
e5604d79 RS |
4339 | /* OR in the next part of the littlenum. */ |
4340 | val |= (*bignum << loaded); | |
4341 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4342 | size--; | |
4343 | bignum++; | |
4344 | ||
4345 | /* Add bytes until there are less than 7 bits left in VAL | |
4346 | or until every non-sign bit has been written. */ | |
4347 | do | |
252b5132 | 4348 | { |
e5604d79 RS |
4349 | byte = val & 0x7f; |
4350 | loaded -= 7; | |
4351 | val >>= 7; | |
4352 | if (size > 0 | |
4353 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 4354 | byte |= 0x80; |
e5604d79 RS |
4355 | |
4356 | if (orig) | |
4357 | *p = byte; | |
4358 | p++; | |
252b5132 | 4359 | } |
e5604d79 RS |
4360 | while ((byte & 0x80) != 0 && loaded >= 7); |
4361 | } | |
4362 | while (size > 0); | |
252b5132 | 4363 | |
e5604d79 RS |
4364 | /* Mop up any left-over bits (of which there will be less than 7). */ |
4365 | if ((byte & 0x80) != 0) | |
4366 | { | |
4367 | /* Sign-extend VAL. */ | |
4368 | if (val & (1 << (loaded - 1))) | |
4369 | val |= ~0 << loaded; | |
252b5132 | 4370 | if (orig) |
e5604d79 | 4371 | *p = val & 0x7f; |
252b5132 RH |
4372 | p++; |
4373 | } | |
252b5132 RH |
4374 | |
4375 | return p - orig; | |
4376 | } | |
4377 | ||
6d4d30bb | 4378 | static inline int |
39e6acbd | 4379 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4380 | { |
4381 | char *orig = p; | |
4382 | valueT val = 0; | |
4383 | int loaded = 0; | |
4384 | unsigned byte; | |
4385 | ||
4386 | /* Strip leading zeros off the bignum. */ | |
4387 | /* XXX: Is this needed? */ | |
041ff4dd | 4388 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4389 | size--; |
4390 | ||
4391 | do | |
4392 | { | |
4393 | if (loaded < 7 && size > 0) | |
4394 | { | |
4395 | val |= (*bignum << loaded); | |
4396 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4397 | size--; | |
4398 | bignum++; | |
4399 | } | |
4400 | ||
4401 | byte = val & 0x7f; | |
4402 | loaded -= 7; | |
4403 | val >>= 7; | |
4404 | ||
4405 | if (size > 0 || val) | |
4406 | byte |= 0x80; | |
4407 | ||
4408 | if (orig) | |
4409 | *p = byte; | |
4410 | p++; | |
4411 | } | |
4412 | while (byte & 0x80); | |
4413 | ||
4414 | return p - orig; | |
4415 | } | |
4416 | ||
6d4d30bb | 4417 | static int |
39e6acbd | 4418 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
4419 | { |
4420 | if (sign) | |
4421 | return output_big_sleb128 (p, bignum, size); | |
4422 | else | |
4423 | return output_big_uleb128 (p, bignum, size); | |
4424 | } | |
4425 | ||
4426 | /* Generate the appropriate fragments for a given expression to emit a | |
4427 | leb128 value. */ | |
4428 | ||
87c245cc | 4429 | static void |
39e6acbd | 4430 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
4431 | { |
4432 | operatorT op = exp->X_op; | |
b7712f8d | 4433 | unsigned int nbytes; |
252b5132 RH |
4434 | |
4435 | if (op == O_absent || op == O_illegal) | |
4436 | { | |
4437 | as_warn (_("zero assumed for missing expression")); | |
4438 | exp->X_add_number = 0; | |
4439 | op = O_constant; | |
4440 | } | |
4441 | else if (op == O_big && exp->X_add_number <= 0) | |
4442 | { | |
0e389e77 | 4443 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4444 | exp->X_add_number = 0; |
4445 | op = O_constant; | |
4446 | } | |
4447 | else if (op == O_register) | |
4448 | { | |
4449 | as_warn (_("register value used as expression")); | |
4450 | op = O_constant; | |
4451 | } | |
e5604d79 RS |
4452 | else if (op == O_constant |
4453 | && sign | |
4454 | && (exp->X_add_number < 0) != !exp->X_unsigned) | |
4455 | { | |
4456 | /* We're outputting a signed leb128 and the sign of X_add_number | |
4457 | doesn't reflect the sign of the original value. Convert EXP | |
4458 | to a correctly-extended bignum instead. */ | |
4459 | convert_to_bignum (exp); | |
4460 | op = O_big; | |
4461 | } | |
252b5132 | 4462 | |
67a659f6 RH |
4463 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
4464 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 4465 | nbytes = (unsigned int) -1; |
67a659f6 RH |
4466 | if (check_eh_frame (exp, &nbytes)) |
4467 | abort (); | |
4468 | ||
371b7465 RH |
4469 | /* Let the backend know that subsequent data may be byte aligned. */ |
4470 | #ifdef md_cons_align | |
4471 | md_cons_align (1); | |
4472 | #endif | |
4473 | ||
252b5132 RH |
4474 | if (op == O_constant) |
4475 | { | |
4476 | /* If we've got a constant, emit the thing directly right now. */ | |
4477 | ||
4478 | valueT value = exp->X_add_number; | |
4479 | int size; | |
4480 | char *p; | |
4481 | ||
4482 | size = sizeof_leb128 (value, sign); | |
4483 | p = frag_more (size); | |
4484 | output_leb128 (p, value, sign); | |
4485 | } | |
4486 | else if (op == O_big) | |
4487 | { | |
4488 | /* O_big is a different sort of constant. */ | |
4489 | ||
4490 | int size; | |
4491 | char *p; | |
4492 | ||
4493 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
4494 | p = frag_more (size); | |
4495 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
4496 | } | |
4497 | else | |
4498 | { | |
041ff4dd | 4499 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
4500 | resolve things later. */ |
4501 | ||
041ff4dd | 4502 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
4503 | make_expr_symbol (exp), 0, (char *) NULL); |
4504 | } | |
4505 | } | |
4506 | ||
4507 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
4508 | ||
4509 | void | |
39e6acbd | 4510 | s_leb128 (int sign) |
252b5132 RH |
4511 | { |
4512 | expressionS exp; | |
4513 | ||
00bbdfe7 BW |
4514 | #ifdef md_flush_pending_output |
4515 | md_flush_pending_output (); | |
4516 | #endif | |
4517 | ||
041ff4dd NC |
4518 | do |
4519 | { | |
4520 | expression (&exp); | |
4521 | emit_leb128_expr (&exp, sign); | |
4522 | } | |
4523 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
4524 | |
4525 | input_line_pointer--; | |
4526 | demand_empty_rest_of_line (); | |
4527 | } | |
4528 | \f | |
041ff4dd NC |
4529 | /* We read 0 or more ',' separated, double-quoted strings. |
4530 | Caller should have checked need_pass_2 is FALSE because we don't | |
4531 | check it. */ | |
4532 | ||
4533 | void | |
39e6acbd KH |
4534 | stringer (/* Worker to do .ascii etc statements. */ |
4535 | /* Checks end-of-line. */ | |
4536 | register int append_zero /* 0: don't append '\0', else 1. */) | |
252b5132 RH |
4537 | { |
4538 | register unsigned int c; | |
4539 | char *start; | |
4540 | ||
4541 | #ifdef md_flush_pending_output | |
4542 | md_flush_pending_output (); | |
4543 | #endif | |
4544 | ||
041ff4dd NC |
4545 | /* The following awkward logic is to parse ZERO or more strings, |
4546 | comma separated. Recall a string expression includes spaces | |
4547 | before the opening '\"' and spaces after the closing '\"'. | |
4548 | We fake a leading ',' if there is (supposed to be) | |
4549 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
4550 | if (is_it_end_of_statement ()) |
4551 | { | |
041ff4dd NC |
4552 | c = 0; /* Skip loop. */ |
4553 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
4554 | } |
4555 | else | |
4556 | { | |
041ff4dd | 4557 | c = ','; /* Do loop. */ |
252b5132 | 4558 | } |
8ac9ba6c NC |
4559 | /* If we have been switched into the abs_section then we |
4560 | will not have an obstack onto which we can hang strings. */ | |
4561 | if (now_seg == absolute_section) | |
4562 | { | |
4563 | as_bad (_("strings must be placed into a section")); | |
4564 | c = 0; | |
4565 | ignore_rest_of_line (); | |
4566 | } | |
d6415f6c | 4567 | |
252b5132 RH |
4568 | while (c == ',' || c == '<' || c == '"') |
4569 | { | |
4570 | SKIP_WHITESPACE (); | |
4571 | switch (*input_line_pointer) | |
4572 | { | |
4573 | case '\"': | |
041ff4dd | 4574 | ++input_line_pointer; /*->1st char of string. */ |
252b5132 RH |
4575 | start = input_line_pointer; |
4576 | while (is_a_char (c = next_char_of_string ())) | |
4577 | { | |
4578 | FRAG_APPEND_1_CHAR (c); | |
4579 | } | |
4580 | if (append_zero) | |
4581 | { | |
4582 | FRAG_APPEND_1_CHAR (0); | |
4583 | } | |
4584 | know (input_line_pointer[-1] == '\"'); | |
4585 | ||
4586 | #ifndef NO_LISTING | |
4587 | #ifdef OBJ_ELF | |
4588 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | |
d6415f6c AM |
4589 | will emit .string with a filename in the .debug section |
4590 | after a sequence of constants. See the comment in | |
4591 | emit_expr for the sequence. emit_expr will set | |
4592 | dwarf_file_string to non-zero if this string might be a | |
4593 | source file name. */ | |
252b5132 RH |
4594 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
4595 | dwarf_file_string = 0; | |
4596 | else if (dwarf_file_string) | |
4597 | { | |
4598 | c = input_line_pointer[-1]; | |
4599 | input_line_pointer[-1] = '\0'; | |
4600 | listing_source_file (start); | |
4601 | input_line_pointer[-1] = c; | |
4602 | } | |
4603 | #endif | |
4604 | #endif | |
4605 | ||
4606 | break; | |
4607 | case '<': | |
4608 | input_line_pointer++; | |
4609 | c = get_single_number (); | |
4610 | FRAG_APPEND_1_CHAR (c); | |
4611 | if (*input_line_pointer != '>') | |
4612 | { | |
0e389e77 | 4613 | as_bad (_("expected <nn>")); |
252b5132 RH |
4614 | } |
4615 | input_line_pointer++; | |
4616 | break; | |
4617 | case ',': | |
4618 | input_line_pointer++; | |
4619 | break; | |
4620 | } | |
4621 | SKIP_WHITESPACE (); | |
4622 | c = *input_line_pointer; | |
4623 | } | |
4624 | ||
4625 | demand_empty_rest_of_line (); | |
4626 | } /* stringer() */ | |
4627 | \f | |
4628 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
4629 | high bits set. We'll probably also have trouble with | |
4630 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 4631 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 4632 | |
041ff4dd | 4633 | unsigned int |
39e6acbd | 4634 | next_char_of_string (void) |
252b5132 RH |
4635 | { |
4636 | register unsigned int c; | |
4637 | ||
4638 | c = *input_line_pointer++ & CHAR_MASK; | |
4639 | switch (c) | |
4640 | { | |
4641 | case '\"': | |
4642 | c = NOT_A_CHAR; | |
4643 | break; | |
4644 | ||
4645 | case '\n': | |
0e389e77 | 4646 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4647 | bump_line_counters (); |
4648 | break; | |
4649 | ||
4650 | #ifndef NO_STRING_ESCAPES | |
4651 | case '\\': | |
4652 | switch (c = *input_line_pointer++) | |
4653 | { | |
4654 | case 'b': | |
4655 | c = '\b'; | |
4656 | break; | |
4657 | ||
4658 | case 'f': | |
4659 | c = '\f'; | |
4660 | break; | |
4661 | ||
4662 | case 'n': | |
4663 | c = '\n'; | |
4664 | break; | |
4665 | ||
4666 | case 'r': | |
4667 | c = '\r'; | |
4668 | break; | |
4669 | ||
4670 | case 't': | |
4671 | c = '\t'; | |
4672 | break; | |
4673 | ||
4674 | case 'v': | |
4675 | c = '\013'; | |
4676 | break; | |
4677 | ||
4678 | case '\\': | |
4679 | case '"': | |
041ff4dd | 4680 | break; /* As itself. */ |
252b5132 RH |
4681 | |
4682 | case '0': | |
4683 | case '1': | |
4684 | case '2': | |
4685 | case '3': | |
4686 | case '4': | |
4687 | case '5': | |
4688 | case '6': | |
4689 | case '7': | |
4690 | case '8': | |
4691 | case '9': | |
4692 | { | |
4693 | long number; | |
4694 | int i; | |
4695 | ||
041ff4dd | 4696 | for (i = 0, number = 0; |
3882b010 | 4697 | ISDIGIT (c) && i < 3; |
041ff4dd | 4698 | c = *input_line_pointer++, i++) |
252b5132 RH |
4699 | { |
4700 | number = number * 8 + c - '0'; | |
4701 | } | |
f0e652b4 | 4702 | |
252b5132 RH |
4703 | c = number & 0xff; |
4704 | } | |
4705 | --input_line_pointer; | |
4706 | break; | |
4707 | ||
4708 | case 'x': | |
4709 | case 'X': | |
4710 | { | |
4711 | long number; | |
4712 | ||
4713 | number = 0; | |
4714 | c = *input_line_pointer++; | |
3882b010 | 4715 | while (ISXDIGIT (c)) |
252b5132 | 4716 | { |
3882b010 | 4717 | if (ISDIGIT (c)) |
252b5132 | 4718 | number = number * 16 + c - '0'; |
3882b010 | 4719 | else if (ISUPPER (c)) |
252b5132 RH |
4720 | number = number * 16 + c - 'A' + 10; |
4721 | else | |
4722 | number = number * 16 + c - 'a' + 10; | |
4723 | c = *input_line_pointer++; | |
4724 | } | |
4725 | c = number & 0xff; | |
4726 | --input_line_pointer; | |
4727 | } | |
4728 | break; | |
4729 | ||
4730 | case '\n': | |
041ff4dd | 4731 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 4732 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4733 | c = '\n'; |
4734 | bump_line_counters (); | |
4735 | break; | |
4736 | ||
4737 | default: | |
4738 | ||
4739 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 4740 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
4741 | c = '?'; |
4742 | #endif /* ONLY_STANDARD_ESCAPES */ | |
4743 | ||
4744 | break; | |
041ff4dd | 4745 | } |
252b5132 RH |
4746 | break; |
4747 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
4748 | ||
4749 | default: | |
4750 | break; | |
041ff4dd | 4751 | } |
252b5132 | 4752 | return (c); |
041ff4dd | 4753 | } |
252b5132 RH |
4754 | \f |
4755 | static segT | |
39e6acbd | 4756 | get_segmented_expression (register expressionS *expP) |
252b5132 RH |
4757 | { |
4758 | register segT retval; | |
4759 | ||
4760 | retval = expression (expP); | |
4761 | if (expP->X_op == O_illegal | |
4762 | || expP->X_op == O_absent | |
4763 | || expP->X_op == O_big) | |
4764 | { | |
0e389e77 | 4765 | as_bad (_("expected address expression")); |
252b5132 RH |
4766 | expP->X_op = O_constant; |
4767 | expP->X_add_number = 0; | |
4768 | retval = absolute_section; | |
4769 | } | |
4770 | return retval; | |
4771 | } | |
4772 | ||
041ff4dd | 4773 | static segT |
39e6acbd | 4774 | get_known_segmented_expression (register expressionS *expP) |
252b5132 RH |
4775 | { |
4776 | register segT retval; | |
4777 | ||
4778 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
4779 | { | |
4780 | /* There is no easy way to extract the undefined symbol from the | |
4781 | expression. */ | |
4782 | if (expP->X_add_symbol != NULL | |
4783 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
4784 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
4785 | S_GET_NAME (expP->X_add_symbol)); | |
4786 | else | |
4787 | as_warn (_("some symbol undefined; zero assumed")); | |
4788 | retval = absolute_section; | |
4789 | expP->X_op = O_constant; | |
4790 | expP->X_add_number = 0; | |
4791 | } | |
4792 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
4793 | return (retval); | |
041ff4dd | 4794 | } |
252b5132 | 4795 | |
041ff4dd | 4796 | char /* Return terminator. */ |
39e6acbd | 4797 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
4798 | { |
4799 | /* FIXME: val_pointer should probably be offsetT *. */ | |
4800 | *val_pointer = (long) get_absolute_expression (); | |
4801 | return (*input_line_pointer++); | |
4802 | } | |
4803 | \f | |
041ff4dd NC |
4804 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
4805 | Give a warning if that happens. */ | |
4806 | ||
252b5132 | 4807 | char * |
39e6acbd | 4808 | demand_copy_C_string (int *len_pointer) |
252b5132 RH |
4809 | { |
4810 | register char *s; | |
4811 | ||
4812 | if ((s = demand_copy_string (len_pointer)) != 0) | |
4813 | { | |
4814 | register int len; | |
4815 | ||
4816 | for (len = *len_pointer; len > 0; len--) | |
4817 | { | |
4818 | if (*s == 0) | |
4819 | { | |
4820 | s = 0; | |
4821 | len = 1; | |
4822 | *len_pointer = 0; | |
0e389e77 | 4823 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
4824 | } |
4825 | } | |
4826 | } | |
f0e652b4 | 4827 | |
252b5132 RH |
4828 | return s; |
4829 | } | |
4830 | \f | |
041ff4dd NC |
4831 | /* Demand string, but return a safe (=private) copy of the string. |
4832 | Return NULL if we can't read a string here. */ | |
4833 | ||
252b5132 | 4834 | char * |
39e6acbd | 4835 | demand_copy_string (int *lenP) |
252b5132 RH |
4836 | { |
4837 | register unsigned int c; | |
4838 | register int len; | |
4839 | char *retval; | |
4840 | ||
4841 | len = 0; | |
4842 | SKIP_WHITESPACE (); | |
4843 | if (*input_line_pointer == '\"') | |
4844 | { | |
041ff4dd | 4845 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
4846 | |
4847 | while (is_a_char (c = next_char_of_string ())) | |
4848 | { | |
4849 | obstack_1grow (¬es, c); | |
4850 | len++; | |
4851 | } | |
4852 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 4853 | null terminated string. */ |
252b5132 RH |
4854 | obstack_1grow (¬es, '\0'); |
4855 | retval = obstack_finish (¬es); | |
4856 | } | |
4857 | else | |
4858 | { | |
c95b35a9 | 4859 | as_bad (_("missing string")); |
252b5132 RH |
4860 | retval = NULL; |
4861 | ignore_rest_of_line (); | |
4862 | } | |
4863 | *lenP = len; | |
4864 | return (retval); | |
041ff4dd | 4865 | } |
252b5132 | 4866 | \f |
041ff4dd | 4867 | /* In: Input_line_pointer->next character. |
f0e652b4 | 4868 | |
041ff4dd | 4869 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 4870 | |
041ff4dd NC |
4871 | Out: 1 if input_line_pointer->end-of-line. */ |
4872 | ||
4873 | int | |
39e6acbd | 4874 | is_it_end_of_statement (void) |
252b5132 RH |
4875 | { |
4876 | SKIP_WHITESPACE (); | |
4877 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 4878 | } |
252b5132 | 4879 | |
041ff4dd | 4880 | void |
39e6acbd | 4881 | equals (char *sym_name, int reassign) |
252b5132 | 4882 | { |
252b5132 RH |
4883 | char *stop = NULL; |
4884 | char stopc; | |
4885 | ||
4886 | input_line_pointer++; | |
4887 | if (*input_line_pointer == '=') | |
4888 | input_line_pointer++; | |
4889 | ||
4890 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
4891 | input_line_pointer++; | |
4892 | ||
4893 | if (flag_mri) | |
4894 | stop = mri_comment_field (&stopc); | |
4895 | ||
be95a9c1 | 4896 | assign_symbol (sym_name, !reassign); |
252b5132 RH |
4897 | |
4898 | if (flag_mri) | |
31d20a21 AM |
4899 | { |
4900 | demand_empty_rest_of_line (); | |
4901 | mri_comment_end (stop, stopc); | |
4902 | } | |
041ff4dd | 4903 | } |
252b5132 | 4904 | |
7e005732 NC |
4905 | /* .incbin -- include a file verbatim at the current location. */ |
4906 | ||
4907 | void | |
39e6acbd | 4908 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
4909 | { |
4910 | FILE * binfile; | |
4911 | char * path; | |
4912 | char * filename; | |
4913 | char * binfrag; | |
4914 | long skip = 0; | |
4915 | long count = 0; | |
4916 | long bytes; | |
4917 | int len; | |
4918 | ||
4919 | #ifdef md_flush_pending_output | |
4920 | md_flush_pending_output (); | |
4921 | #endif | |
4922 | ||
4923 | SKIP_WHITESPACE (); | |
4924 | filename = demand_copy_string (& len); | |
4925 | if (filename == NULL) | |
4926 | return; | |
4927 | ||
4928 | SKIP_WHITESPACE (); | |
4929 | ||
4930 | /* Look for optional skip and count. */ | |
4931 | if (* input_line_pointer == ',') | |
4932 | { | |
4933 | ++ input_line_pointer; | |
4934 | skip = get_absolute_expression (); | |
4935 | ||
4936 | SKIP_WHITESPACE (); | |
4937 | ||
4938 | if (* input_line_pointer == ',') | |
4939 | { | |
4940 | ++ input_line_pointer; | |
4941 | ||
4942 | count = get_absolute_expression (); | |
4943 | if (count == 0) | |
4944 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
4945 | ||
4946 | SKIP_WHITESPACE (); | |
4947 | } | |
4948 | } | |
4949 | ||
4950 | demand_empty_rest_of_line (); | |
4951 | ||
4952 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 4953 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
4954 | if (binfile == NULL) |
4955 | { | |
4956 | int i; | |
4957 | ||
4958 | path = xmalloc ((unsigned long) len + include_dir_maxlen + 5); | |
4959 | ||
4960 | for (i = 0; i < include_dir_count; i++) | |
4961 | { | |
4962 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
4963 | ||
f740e790 | 4964 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
4965 | if (binfile != NULL) |
4966 | break; | |
4967 | } | |
4968 | ||
4969 | if (binfile == NULL) | |
4970 | as_bad (_("file not found: %s"), filename); | |
4971 | } | |
4972 | else | |
4973 | path = xstrdup (filename); | |
4974 | ||
4975 | if (binfile) | |
4976 | { | |
f740e790 NC |
4977 | long file_len; |
4978 | ||
7e005732 NC |
4979 | register_dependency (path); |
4980 | ||
4981 | /* Compute the length of the file. */ | |
4982 | if (fseek (binfile, 0, SEEK_END) != 0) | |
4983 | { | |
4984 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
4985 | goto done; | |
4986 | } | |
f740e790 | 4987 | file_len = ftell (binfile); |
7e005732 | 4988 | |
c556cc9c | 4989 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 4990 | if (count == 0) |
c556cc9c | 4991 | count = file_len - skip; |
7e005732 | 4992 | |
c556cc9c | 4993 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 4994 | { |
c556cc9c | 4995 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 4996 | skip, count, file_len); |
7e005732 NC |
4997 | goto done; |
4998 | } | |
4999 | ||
5000 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5001 | { | |
5002 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5003 | goto done; | |
5004 | } | |
5005 | ||
5006 | /* Allocate frag space and store file contents in it. */ | |
5007 | binfrag = frag_more (count); | |
5008 | ||
5009 | bytes = fread (binfrag, 1, count, binfile); | |
5010 | if (bytes < count) | |
5011 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5012 | path, bytes, count); | |
5013 | } | |
5014 | done: | |
5015 | if (binfile != NULL) | |
5016 | fclose (binfile); | |
5017 | if (path) | |
5018 | free (path); | |
5019 | } | |
5020 | ||
041ff4dd | 5021 | /* .include -- include a file at this point. */ |
252b5132 | 5022 | |
041ff4dd | 5023 | void |
39e6acbd | 5024 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5025 | { |
252b5132 RH |
5026 | char *filename; |
5027 | int i; | |
5028 | FILE *try; | |
5029 | char *path; | |
5030 | ||
041ff4dd | 5031 | if (!flag_m68k_mri) |
252b5132 RH |
5032 | { |
5033 | filename = demand_copy_string (&i); | |
5034 | if (filename == NULL) | |
5035 | { | |
5036 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5037 | called ignore_rest_of_line. */ |
252b5132 RH |
5038 | return; |
5039 | } | |
5040 | } | |
5041 | else | |
5042 | { | |
5043 | SKIP_WHITESPACE (); | |
5044 | i = 0; | |
041ff4dd | 5045 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5046 | && *input_line_pointer != ' ' |
5047 | && *input_line_pointer != '\t') | |
5048 | { | |
5049 | obstack_1grow (¬es, *input_line_pointer); | |
5050 | ++input_line_pointer; | |
5051 | ++i; | |
5052 | } | |
f0e652b4 | 5053 | |
252b5132 RH |
5054 | obstack_1grow (¬es, '\0'); |
5055 | filename = obstack_finish (¬es); | |
041ff4dd | 5056 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5057 | ++input_line_pointer; |
5058 | } | |
f0e652b4 | 5059 | |
252b5132 RH |
5060 | demand_empty_rest_of_line (); |
5061 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5062 | |
252b5132 RH |
5063 | for (i = 0; i < include_dir_count; i++) |
5064 | { | |
5065 | strcpy (path, include_dirs[i]); | |
5066 | strcat (path, "/"); | |
5067 | strcat (path, filename); | |
f740e790 | 5068 | if (0 != (try = fopen (path, FOPEN_RT))) |
252b5132 RH |
5069 | { |
5070 | fclose (try); | |
5071 | goto gotit; | |
5072 | } | |
5073 | } | |
f0e652b4 | 5074 | |
252b5132 RH |
5075 | free (path); |
5076 | path = filename; | |
5077 | gotit: | |
041ff4dd | 5078 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5079 | register_dependency (path); |
9f10757c | 5080 | input_scrub_insert_file (path); |
041ff4dd | 5081 | } |
252b5132 | 5082 | |
041ff4dd | 5083 | void |
39e6acbd | 5084 | add_include_dir (char *path) |
252b5132 RH |
5085 | { |
5086 | int i; | |
5087 | ||
5088 | if (include_dir_count == 0) | |
5089 | { | |
5090 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5091 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5092 | include_dir_count = 2; |
5093 | } | |
5094 | else | |
5095 | { | |
5096 | include_dir_count++; | |
041ff4dd NC |
5097 | include_dirs = |
5098 | (char **) realloc (include_dirs, | |
5099 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5100 | } |
5101 | ||
041ff4dd | 5102 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5103 | |
5104 | i = strlen (path); | |
5105 | if (i > include_dir_maxlen) | |
5106 | include_dir_maxlen = i; | |
041ff4dd | 5107 | } |
252b5132 RH |
5108 | \f |
5109 | /* Output debugging information to denote the source file. */ | |
5110 | ||
5111 | static void | |
39e6acbd | 5112 | generate_file_debug (void) |
252b5132 RH |
5113 | { |
5114 | if (debug_type == DEBUG_STABS) | |
5115 | stabs_generate_asm_file (); | |
5116 | } | |
5117 | ||
5118 | /* Output line number debugging information for the current source line. */ | |
5119 | ||
5120 | void | |
39e6acbd | 5121 | generate_lineno_debug (void) |
252b5132 | 5122 | { |
252b5132 RH |
5123 | switch (debug_type) |
5124 | { | |
5125 | case DEBUG_UNSPECIFIED: | |
5126 | case DEBUG_NONE: | |
4dc7ead9 | 5127 | case DEBUG_DWARF: |
252b5132 RH |
5128 | break; |
5129 | case DEBUG_STABS: | |
5130 | stabs_generate_asm_lineno (); | |
5131 | break; | |
5132 | case DEBUG_ECOFF: | |
5133 | ecoff_generate_asm_lineno (); | |
5134 | break; | |
252b5132 | 5135 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5136 | /* ??? We could here indicate to dwarf2dbg.c that something |
5137 | has changed. However, since there is additional backend | |
5138 | support that is required (calling dwarf2_emit_insn), we | |
5139 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5140 | break; |
5141 | } | |
5142 | } | |
5143 | ||
5144 | /* Output debugging information to mark a function entry point or end point. | |
5145 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5146 | ||
5147 | void | |
39e6acbd | 5148 | s_func (int end_p) |
252b5132 RH |
5149 | { |
5150 | do_s_func (end_p, NULL); | |
5151 | } | |
5152 | ||
5153 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5154 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5155 | ||
87c245cc | 5156 | static void |
39e6acbd | 5157 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5158 | { |
5159 | /* Record the current function so that we can issue an error message for | |
5160 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5161 | arguments. */ | |
5162 | static char *current_name; | |
5163 | static char *current_label; | |
5164 | ||
5165 | if (end_p) | |
5166 | { | |
5167 | if (current_name == NULL) | |
5168 | { | |
5169 | as_bad (_("missing .func")); | |
5170 | ignore_rest_of_line (); | |
5171 | return; | |
5172 | } | |
5173 | ||
5174 | if (debug_type == DEBUG_STABS) | |
5175 | stabs_generate_asm_endfunc (current_name, current_label); | |
5176 | ||
5177 | current_name = current_label = NULL; | |
5178 | } | |
5179 | else /* ! end_p */ | |
5180 | { | |
041ff4dd NC |
5181 | char *name, *label; |
5182 | char delim1, delim2; | |
252b5132 RH |
5183 | |
5184 | if (current_name != NULL) | |
5185 | { | |
5186 | as_bad (_(".endfunc missing for previous .func")); | |
5187 | ignore_rest_of_line (); | |
5188 | return; | |
5189 | } | |
5190 | ||
5191 | name = input_line_pointer; | |
5192 | delim1 = get_symbol_end (); | |
5193 | name = xstrdup (name); | |
5194 | *input_line_pointer = delim1; | |
5195 | SKIP_WHITESPACE (); | |
5196 | if (*input_line_pointer != ',') | |
5197 | { | |
5198 | if (default_prefix) | |
5199 | asprintf (&label, "%s%s", default_prefix, name); | |
5200 | else | |
5201 | { | |
5202 | char leading_char = 0; | |
5203 | #ifdef BFD_ASSEMBLER | |
5204 | leading_char = bfd_get_symbol_leading_char (stdoutput); | |
5205 | #endif | |
5206 | /* Missing entry point, use function's name with the leading | |
5207 | char prepended. */ | |
5208 | if (leading_char) | |
5209 | asprintf (&label, "%c%s", leading_char, name); | |
5210 | else | |
5211 | label = name; | |
5212 | } | |
5213 | } | |
5214 | else | |
5215 | { | |
5216 | ++input_line_pointer; | |
5217 | SKIP_WHITESPACE (); | |
5218 | label = input_line_pointer; | |
5219 | delim2 = get_symbol_end (); | |
5220 | label = xstrdup (label); | |
5221 | *input_line_pointer = delim2; | |
5222 | } | |
5223 | ||
5224 | if (debug_type == DEBUG_STABS) | |
5225 | stabs_generate_asm_func (name, label); | |
5226 | ||
5227 | current_name = name; | |
5228 | current_label = label; | |
5229 | } | |
5230 | ||
5231 | demand_empty_rest_of_line (); | |
5232 | } | |
5233 | \f | |
041ff4dd | 5234 | void |
39e6acbd | 5235 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5236 | { |
40a4d956 | 5237 | ignore_rest_of_line (); |
252b5132 RH |
5238 | } |
5239 | ||
252b5132 | 5240 | void |
39e6acbd | 5241 | read_print_statistics (FILE *file) |
252b5132 RH |
5242 | { |
5243 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5244 | } | |
5245 | ||
041ff4dd NC |
5246 | /* Inserts the given line into the input stream. |
5247 | ||
9f10757c TW |
5248 | This call avoids macro/conditionals nesting checking, since the contents of |
5249 | the line are assumed to replace the contents of a line already scanned. | |
5250 | ||
47eebc20 | 5251 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
5252 | called by md_start_line_hook(). The given line is assumed to already be |
5253 | properly scrubbed. */ | |
5254 | ||
5255 | void | |
39e6acbd | 5256 | input_scrub_insert_line (const char *line) |
9f10757c TW |
5257 | { |
5258 | sb newline; | |
5259 | sb_new (&newline); | |
5260 | sb_add_string (&newline, line); | |
5261 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5262 | sb_kill (&newline); | |
5263 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5264 | } | |
5265 | ||
5266 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5267 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5268 | |
5269 | void | |
39e6acbd | 5270 | input_scrub_insert_file (char *path) |
9f10757c TW |
5271 | { |
5272 | input_scrub_include_file (path, input_line_pointer); | |
5273 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5274 | } | |
40a4d956 JB |
5275 | |
5276 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
5277 | ||
5278 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
5279 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
5280 | #endif | |
5281 | ||
5282 | static char * | |
5283 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED) | |
5284 | { | |
5285 | char inquote = '\0'; | |
5286 | int inescape = 0; | |
5287 | ||
5288 | while (!is_end_of_line[(unsigned char) *s] | |
5289 | || (inquote && !ISCNTRL (*s)) | |
5290 | || (inquote == '\'' && flag_mri) | |
5291 | #ifdef TC_EOL_IN_INSN | |
5292 | || (insn && TC_EOL_IN_INSN (s)) | |
5293 | #endif | |
5294 | ) | |
5295 | { | |
5296 | if (mri_string && *s == '\'') | |
5297 | inquote ^= *s; | |
5298 | else if (inescape) | |
5299 | inescape = 0; | |
5300 | else if (*s == '\\') | |
5301 | inescape = 1; | |
5302 | else if (!inquote | |
5303 | ? *s == '"' | |
5304 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
5305 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
5306 | #endif | |
5307 | : *s == inquote) | |
5308 | inquote ^= *s; | |
5309 | ++s; | |
5310 | } | |
5311 | if (inquote) | |
5312 | as_warn (_("missing closing `%c'"), inquote); | |
5313 | if (inescape) | |
5314 | as_warn (_("stray `\\'")); | |
5315 | return s; | |
5316 | } | |
5317 | ||
5318 | char * | |
5319 | find_end_of_line (char *s, int mri_string) | |
5320 | { | |
5321 | return _find_end_of_line (s, mri_string, 0); | |
5322 | } |