Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
f7e42eb4 | 2 | Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
aa820537 | 3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
e5604d79 | 4 | Free Software Foundation, Inc. |
252b5132 | 5 | |
ec2655a6 | 6 | This file is part of GAS, the GNU Assembler. |
252b5132 | 7 | |
ec2655a6 NC |
8 | GAS is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3, or (at your option) | |
11 | any later version. | |
252b5132 | 12 | |
ec2655a6 NC |
13 | GAS is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
ec2655a6 NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
59c871b4 | 23 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
041ff4dd NC |
24 | But then, GNU isn't spozed to run on your machine anyway. |
25 | (RMS is so shortsighted sometimes.) */ | |
041ff4dd | 26 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 27 | |
252b5132 | 28 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 29 | grow when we do 4361 style flonums. */ |
252b5132 RH |
30 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
31 | ||
47eebc20 | 32 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
33 | Another group of these functions is in the expr.c module. */ |
34 | ||
252b5132 | 35 | #include "as.h" |
3882b010 | 36 | #include "safe-ctype.h" |
252b5132 RH |
37 | #include "subsegs.h" |
38 | #include "sb.h" | |
39 | #include "macro.h" | |
40 | #include "obstack.h" | |
252b5132 | 41 | #include "ecoff.h" |
54cfded0 | 42 | #include "dw2gencfi.h" |
252b5132 RH |
43 | |
44 | #ifndef TC_START_LABEL | |
5e8c8f8f | 45 | #define TC_START_LABEL(x,y,z) (x == ':') |
252b5132 RH |
46 | #endif |
47 | ||
8684e216 HPN |
48 | /* Set by the object-format or the target. */ |
49 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 50 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 51 | do \ |
d6415f6c AM |
52 | { \ |
53 | if ((SIZE) >= 8) \ | |
54 | (P2VAR) = 3; \ | |
55 | else if ((SIZE) >= 4) \ | |
56 | (P2VAR) = 2; \ | |
57 | else if ((SIZE) >= 2) \ | |
58 | (P2VAR) = 1; \ | |
59 | else \ | |
60 | (P2VAR) = 0; \ | |
041ff4dd NC |
61 | } \ |
62 | while (0) | |
8684e216 HPN |
63 | #endif |
64 | ||
041ff4dd | 65 | char *input_line_pointer; /*->next char of source file to parse. */ |
252b5132 RH |
66 | |
67 | #if BITS_PER_CHAR != 8 | |
68 | /* The following table is indexed by[(char)] and will break if | |
69 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
70 | die horribly; | |
71 | #endif | |
72 | ||
73 | #ifndef LEX_AT | |
252b5132 RH |
74 | #define LEX_AT 0 |
75 | #endif | |
76 | ||
77 | #ifndef LEX_BR | |
78 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
79 | #define LEX_BR 0 | |
80 | #endif | |
81 | ||
82 | #ifndef LEX_PCT | |
83 | /* The Delta 68k assembler permits % inside label names. */ | |
84 | #define LEX_PCT 0 | |
85 | #endif | |
86 | ||
87 | #ifndef LEX_QM | |
88 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
89 | #define LEX_QM 0 | |
90 | #endif | |
91 | ||
58b5739a | 92 | #ifndef LEX_HASH |
800eeca4 JW |
93 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
94 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
95 | #define LEX_HASH 0 |
96 | #endif | |
97 | ||
252b5132 | 98 | #ifndef LEX_DOLLAR |
252b5132 RH |
99 | #define LEX_DOLLAR 3 |
100 | #endif | |
101 | ||
102 | #ifndef LEX_TILDE | |
103 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
104 | #define LEX_TILDE 0 | |
105 | #endif | |
106 | ||
041ff4dd | 107 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 108 | char lex_type[256] = { |
252b5132 RH |
109 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
110 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 111 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
112 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
113 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
114 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
115 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 116 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
117 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
118 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
124 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
125 | }; | |
126 | ||
041ff4dd | 127 | /* In: a character. |
d67ffd56 L |
128 | Out: 1 if this character ends a line. |
129 | 2 if this character is a line separator. */ | |
ef99799a | 130 | char is_end_of_line[256] = { |
252b5132 | 131 | #ifdef CR_EOL |
b75c0c92 | 132 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 133 | #else |
b75c0c92 | 134 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 135 | #endif |
b75c0c92 AM |
136 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
137 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
150 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 151 | }; |
252b5132 | 152 | |
a8a3b3b2 | 153 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
154 | char original_case_string[128]; |
155 | #endif | |
156 | ||
041ff4dd | 157 | /* Functions private to this file. */ |
252b5132 | 158 | |
041ff4dd NC |
159 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
160 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 161 | |
041ff4dd NC |
162 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
163 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
164 | internals manual. */ | |
252b5132 RH |
165 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
166 | ||
041ff4dd | 167 | /* Variables for handling include file directory table. */ |
252b5132 | 168 | |
041ff4dd NC |
169 | /* Table of pointers to directories to search for .include's. */ |
170 | char **include_dirs; | |
171 | ||
172 | /* How many are in the table. */ | |
173 | int include_dir_count; | |
174 | ||
175 | /* Length of longest in table. */ | |
176 | int include_dir_maxlen = 1; | |
252b5132 RH |
177 | |
178 | #ifndef WORKING_DOT_WORD | |
179 | struct broken_word *broken_words; | |
180 | int new_broken_words; | |
181 | #endif | |
182 | ||
183 | /* The current offset into the absolute section. We don't try to | |
184 | build frags in the absolute section, since no data can be stored | |
185 | there. We just keep track of the current offset. */ | |
186 | addressT abs_section_offset; | |
187 | ||
188 | /* If this line had an MRI style label, it is stored in this variable. | |
189 | This is used by some of the MRI pseudo-ops. */ | |
190 | symbolS *line_label; | |
191 | ||
192 | /* This global variable is used to support MRI common sections. We | |
193 | translate such sections into a common symbol. This variable is | |
194 | non-NULL when we are in an MRI common section. */ | |
195 | symbolS *mri_common_symbol; | |
196 | ||
197 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
198 | need to align to an even byte boundary unless the next pseudo-op is | |
199 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
200 | may be needed. */ | |
201 | static int mri_pending_align; | |
202 | ||
203 | #ifndef NO_LISTING | |
204 | #ifdef OBJ_ELF | |
205 | /* This variable is set to be non-zero if the next string we see might | |
206 | be the name of the source file in DWARF debugging information. See | |
207 | the comment in emit_expr for the format we look for. */ | |
208 | static int dwarf_file_string; | |
209 | #endif | |
210 | #endif | |
211 | ||
87c245cc | 212 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd KH |
213 | static void do_align (int, char *, int, int); |
214 | static void s_align (int, int); | |
caa32fe5 | 215 | static void s_altmacro (int); |
057f53c1 | 216 | static void s_bad_end (int); |
104d59d1 JM |
217 | #ifdef OBJ_ELF |
218 | static void s_gnu_attribute (int); | |
219 | #endif | |
05e9452c | 220 | static void s_reloc (int); |
39e6acbd | 221 | static int hex_float (int, char *); |
39e6acbd KH |
222 | static segT get_known_segmented_expression (expressionS * expP); |
223 | static void pobegin (void); | |
7592cfd7 | 224 | static int get_non_macro_line_sb (sb *); |
39e6acbd | 225 | static void generate_file_debug (void); |
7592cfd7 | 226 | static char *_find_end_of_line (char *, int, int, int); |
252b5132 | 227 | \f |
252b5132 | 228 | void |
39e6acbd | 229 | read_begin (void) |
252b5132 RH |
230 | { |
231 | const char *p; | |
232 | ||
233 | pobegin (); | |
234 | obj_read_begin_hook (); | |
235 | ||
236 | /* Something close -- but not too close -- to a multiple of 1024. | |
237 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
238 | obstack_begin (¬es, chunksize); | |
239 | obstack_begin (&cond_obstack, chunksize); | |
240 | ||
041ff4dd | 241 | /* Use machine dependent syntax. */ |
252b5132 | 242 | for (p = line_separator_chars; *p; p++) |
d67ffd56 | 243 | is_end_of_line[(unsigned char) *p] = 2; |
041ff4dd | 244 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
245 | |
246 | if (flag_mri) | |
247 | lex_type['?'] = 3; | |
248 | } | |
249 | \f | |
cc1bc22a | 250 | #ifndef TC_ADDRESS_BYTES |
cc1bc22a AM |
251 | #define TC_ADDRESS_BYTES address_bytes |
252 | ||
253 | static inline int | |
254 | address_bytes (void) | |
255 | { | |
256 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
257 | contain an address. */ | |
258 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
259 | n |= n >> 1; | |
260 | n |= n >> 2; | |
261 | n += 1; | |
262 | return n; | |
263 | } | |
264 | #endif | |
cc1bc22a | 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}, |
38a57ae7 NC |
274 | {"ascii", stringer, 8+0}, |
275 | {"asciz", stringer, 8+1}, | |
252b5132 RH |
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}, | |
9497f5ac | 330 | {"eqv", s_set, -1}, |
252b5132 | 331 | {"err", s_err, 0}, |
d190d046 | 332 | {"error", s_errwarn, 1}, |
252b5132 | 333 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
334 | /* extend */ |
335 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 | 336 | {"appfile", s_app_file, 1}, |
93e914b2 | 337 | {"appline", s_app_line, 1}, |
252b5132 RH |
338 | {"fail", s_fail, 0}, |
339 | {"file", s_app_file, 0}, | |
340 | {"fill", s_fill, 0}, | |
341 | {"float", float_cons, 'f'}, | |
342 | {"format", s_ignore, 0}, | |
343 | {"func", s_func, 0}, | |
344 | {"global", s_globl, 0}, | |
345 | {"globl", s_globl, 0}, | |
104d59d1 JM |
346 | #ifdef OBJ_ELF |
347 | {"gnu_attribute", s_gnu_attribute, 0}, | |
348 | #endif | |
252b5132 RH |
349 | {"hword", cons, 2}, |
350 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 351 | {"ifb", s_ifb, 1}, |
252b5132 RH |
352 | {"ifc", s_ifc, 0}, |
353 | {"ifdef", s_ifdef, 0}, | |
354 | {"ifeq", s_if, (int) O_eq}, | |
355 | {"ifeqs", s_ifeqs, 0}, | |
356 | {"ifge", s_if, (int) O_ge}, | |
357 | {"ifgt", s_if, (int) O_gt}, | |
358 | {"ifle", s_if, (int) O_le}, | |
359 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 360 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
361 | {"ifnc", s_ifc, 1}, |
362 | {"ifndef", s_ifdef, 1}, | |
363 | {"ifne", s_if, (int) O_ne}, | |
364 | {"ifnes", s_ifeqs, 1}, | |
365 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 366 | {"incbin", s_incbin, 0}, |
252b5132 RH |
367 | {"include", s_include, 0}, |
368 | {"int", cons, 4}, | |
369 | {"irp", s_irp, 0}, | |
370 | {"irep", s_irp, 0}, | |
371 | {"irpc", s_irp, 1}, | |
372 | {"irepc", s_irp, 1}, | |
373 | {"lcomm", s_lcomm, 0}, | |
c2069bb2 | 374 | {"lflags", s_ignore, 0}, /* Listing flags. */ |
93e914b2 | 375 | {"linefile", s_app_line, 0}, |
252b5132 | 376 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 377 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
378 | {"llen", listing_psize, 1}, |
379 | {"long", cons, 4}, | |
380 | {"lsym", s_lsym, 0}, | |
381 | {"macro", s_macro, 0}, | |
382 | {"mexit", s_mexit, 0}, | |
383 | {"mri", s_mri, 0}, | |
384 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
385 | {"name", s_ignore, 0}, | |
caa32fe5 | 386 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 387 | {"noformat", s_ignore, 0}, |
041ff4dd | 388 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
389 | {"nopage", listing_nopage, 0}, |
390 | {"octa", cons, 16}, | |
391 | {"offset", s_struct, 0}, | |
392 | {"org", s_org, 0}, | |
393 | {"p2align", s_align_ptwo, 0}, | |
394 | {"p2alignw", s_align_ptwo, -2}, | |
395 | {"p2alignl", s_align_ptwo, -4}, | |
396 | {"page", listing_eject, 0}, | |
397 | {"plen", listing_psize, 0}, | |
398 | {"print", s_print, 0}, | |
041ff4dd | 399 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
400 | {"purgem", s_purgem, 0}, |
401 | {"quad", cons, 8}, | |
05e9452c | 402 | {"reloc", s_reloc, 0}, |
252b5132 RH |
403 | {"rep", s_rept, 0}, |
404 | {"rept", s_rept, 0}, | |
405 | {"rva", s_rva, 4}, | |
041ff4dd NC |
406 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
407 | /* scl */ | |
408 | /* sect */ | |
252b5132 RH |
409 | {"set", s_set, 0}, |
410 | {"short", cons, 2}, | |
411 | {"single", float_cons, 'f'}, | |
041ff4dd | 412 | /* size */ |
252b5132 RH |
413 | {"space", s_space, 0}, |
414 | {"skip", s_space, 0}, | |
415 | {"sleb128", s_leb128, 1}, | |
416 | {"spc", s_ignore, 0}, | |
417 | {"stabd", s_stab, 'd'}, | |
418 | {"stabn", s_stab, 'n'}, | |
419 | {"stabs", s_stab, 's'}, | |
38a57ae7 NC |
420 | {"string", stringer, 8+1}, |
421 | {"string8", stringer, 8+1}, | |
422 | {"string16", stringer, 16+1}, | |
423 | {"string32", stringer, 32+1}, | |
424 | {"string64", stringer, 64+1}, | |
252b5132 | 425 | {"struct", s_struct, 0}, |
041ff4dd | 426 | /* tag */ |
252b5132 RH |
427 | {"text", s_text, 0}, |
428 | ||
429 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
430 | won't be able to use it for a while -- probably a year or more. | |
431 | But once this has been released, check with gcc maintainers | |
432 | before deleting it or even changing the spelling. */ | |
433 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
434 | /* If we're folding case -- done for some targets, not necessarily | |
435 | all -- the above string in an input file will be converted to | |
436 | this one. Match it either way... */ | |
437 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
438 | ||
041ff4dd | 439 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 440 | {"ttl", listing_title, 0}, |
041ff4dd | 441 | /* type */ |
252b5132 | 442 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
443 | /* use */ |
444 | /* val */ | |
252b5132 RH |
445 | {"xcom", s_comm, 0}, |
446 | {"xdef", s_globl, 0}, | |
447 | {"xref", s_ignore, 0}, | |
448 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 449 | {"warning", s_errwarn, 0}, |
06e77878 | 450 | {"weakref", s_weakref, 0}, |
252b5132 RH |
451 | {"word", cons, 2}, |
452 | {"zero", s_space, 0}, | |
041ff4dd | 453 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
454 | }; |
455 | ||
87c245cc BE |
456 | static offsetT |
457 | get_absolute_expr (expressionS *exp) | |
458 | { | |
9497f5ac | 459 | expression_and_evaluate (exp); |
87c245cc BE |
460 | if (exp->X_op != O_constant) |
461 | { | |
462 | if (exp->X_op != O_absent) | |
463 | as_bad (_("bad or irreducible absolute expression")); | |
464 | exp->X_add_number = 0; | |
465 | } | |
466 | return exp->X_add_number; | |
467 | } | |
468 | ||
469 | offsetT | |
470 | get_absolute_expression (void) | |
471 | { | |
472 | expressionS exp; | |
473 | ||
474 | return get_absolute_expr (&exp); | |
475 | } | |
476 | ||
252b5132 RH |
477 | static int pop_override_ok = 0; |
478 | static const char *pop_table_name; | |
479 | ||
480 | void | |
39e6acbd | 481 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
482 | { |
483 | const char *errtxt; | |
484 | const pseudo_typeS *pop; | |
485 | for (pop = table; pop->poc_name; pop++) | |
486 | { | |
487 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
488 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
489 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
490 | errtxt); | |
491 | } | |
492 | } | |
493 | ||
494 | #ifndef md_pop_insert | |
495 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
496 | #endif | |
497 | ||
498 | #ifndef obj_pop_insert | |
499 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
500 | #endif | |
501 | ||
54cfded0 AM |
502 | #ifndef cfi_pop_insert |
503 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
504 | #endif | |
505 | ||
041ff4dd | 506 | static void |
39e6acbd | 507 | pobegin (void) |
252b5132 RH |
508 | { |
509 | po_hash = hash_new (); | |
510 | ||
041ff4dd | 511 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
512 | pop_table_name = "md"; |
513 | md_pop_insert (); | |
514 | ||
041ff4dd | 515 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
516 | pop_table_name = "obj"; |
517 | pop_override_ok = 1; | |
518 | obj_pop_insert (); | |
519 | ||
041ff4dd | 520 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
521 | pop_table_name = "standard"; |
522 | pop_insert (potable); | |
d6415f6c | 523 | |
54cfded0 AM |
524 | #ifdef TARGET_USE_CFIPOP |
525 | pop_table_name = "cfi"; | |
526 | pop_override_ok = 1; | |
527 | cfi_pop_insert (); | |
528 | #endif | |
252b5132 RH |
529 | } |
530 | \f | |
531 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
532 | if (ignore_input ()) \ | |
533 | { \ | |
7592cfd7 | 534 | char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \ |
40a4d956 JB |
535 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
536 | && eol >= buffer_limit) \ | |
537 | ? buffer_limit \ | |
538 | : eol + 1; \ | |
252b5132 RH |
539 | continue; \ |
540 | } | |
541 | ||
252b5132 RH |
542 | /* This function is used when scrubbing the characters between #APP |
543 | and #NO_APP. */ | |
544 | ||
545 | static char *scrub_string; | |
546 | static char *scrub_string_end; | |
547 | ||
548 | static int | |
39e6acbd | 549 | scrub_from_string (char *buf, int buflen) |
252b5132 | 550 | { |
2b47531b ILT |
551 | int copy; |
552 | ||
553 | copy = scrub_string_end - scrub_string; | |
554 | if (copy > buflen) | |
555 | copy = buflen; | |
556 | memcpy (buf, scrub_string, copy); | |
557 | scrub_string += copy; | |
558 | return copy; | |
252b5132 RH |
559 | } |
560 | ||
5e75c3ab JB |
561 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
562 | static int | |
563 | try_macro (char term, const char *line) | |
564 | { | |
565 | sb out; | |
566 | const char *err; | |
567 | macro_entry *macro; | |
568 | ||
569 | if (check_macro (line, &out, &err, ¯o)) | |
570 | { | |
571 | if (err != NULL) | |
572 | as_bad ("%s", err); | |
573 | *input_line_pointer++ = term; | |
574 | input_scrub_include_sb (&out, | |
575 | input_line_pointer, 1); | |
576 | sb_kill (&out); | |
577 | buffer_limit = | |
578 | input_scrub_next_buffer (&input_line_pointer); | |
579 | #ifdef md_macro_info | |
580 | md_macro_info (macro); | |
581 | #endif | |
582 | return 1; | |
583 | } | |
584 | return 0; | |
585 | } | |
586 | ||
041ff4dd NC |
587 | /* We read the file, putting things into a web that represents what we |
588 | have been reading. */ | |
589 | void | |
39e6acbd | 590 | read_a_source_file (char *name) |
252b5132 RH |
591 | { |
592 | register char c; | |
041ff4dd | 593 | register char *s; /* String of symbol, '\0' appended. */ |
252b5132 RH |
594 | register int temp; |
595 | pseudo_typeS *pop; | |
596 | ||
4c400d5e AM |
597 | #ifdef WARN_COMMENTS |
598 | found_comment = 0; | |
599 | #endif | |
600 | ||
252b5132 RH |
601 | buffer = input_scrub_new_file (name); |
602 | ||
603 | listing_file (name); | |
604 | listing_newline (NULL); | |
605 | register_dependency (name); | |
606 | ||
607 | /* Generate debugging information before we've read anything in to denote | |
608 | this file as the "main" source file and not a subordinate one | |
609 | (e.g. N_SO vs N_SOL in stabs). */ | |
610 | generate_file_debug (); | |
611 | ||
612 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 613 | { /* We have another line to parse. */ |
5e75c3ab JB |
614 | #ifndef NO_LISTING |
615 | /* In order to avoid listing macro expansion lines with labels | |
616 | multiple times, keep track of which line was last issued. */ | |
617 | static char *last_eol; | |
618 | ||
619 | last_eol = NULL; | |
620 | #endif | |
252b5132 RH |
621 | while (input_line_pointer < buffer_limit) |
622 | { | |
f19df8f7 | 623 | bfd_boolean was_new_line; |
041ff4dd | 624 | /* We have more of this buffer to parse. */ |
252b5132 | 625 | |
041ff4dd NC |
626 | /* We now have input_line_pointer->1st char of next line. |
627 | If input_line_pointer [-1] == '\n' then we just | |
628 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
629 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
630 | if (was_new_line) | |
252b5132 RH |
631 | { |
632 | #ifdef md_start_line_hook | |
633 | md_start_line_hook (); | |
634 | #endif | |
252b5132 RH |
635 | if (input_line_pointer[-1] == '\n') |
636 | bump_line_counters (); | |
f19df8f7 | 637 | } |
252b5132 | 638 | |
f19df8f7 AM |
639 | #ifndef NO_LISTING |
640 | /* If listing is on, and we are expanding a macro, then give | |
641 | the listing code the contents of the expanded line. */ | |
642 | if (listing) | |
643 | { | |
644 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
645 | { | |
646 | /* Find the end of the current expanded macro line. */ | |
647 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
648 | ||
649 | if (s != last_eol) | |
650 | { | |
651 | char *copy; | |
652 | int len; | |
653 | ||
654 | last_eol = s; | |
655 | /* Copy it for safe keeping. Also give an indication of | |
656 | how much macro nesting is involved at this point. */ | |
657 | len = s - input_line_pointer; | |
658 | copy = (char *) xmalloc (len + macro_nest + 2); | |
659 | memset (copy, '>', macro_nest); | |
660 | copy[macro_nest] = ' '; | |
661 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
662 | copy[macro_nest + 1 + len] = '\0'; | |
663 | ||
664 | /* Install the line with the listing facility. */ | |
665 | listing_newline (copy); | |
666 | } | |
667 | } | |
668 | else | |
669 | listing_newline (NULL); | |
670 | } | |
671 | #endif | |
672 | if (was_new_line) | |
673 | { | |
252b5132 RH |
674 | line_label = NULL; |
675 | ||
abd63a32 | 676 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
677 | { |
678 | /* Text at the start of a line must be a label, we | |
679 | run down and stick a colon in. */ | |
680 | if (is_name_beginner (*input_line_pointer)) | |
681 | { | |
682 | char *line_start = input_line_pointer; | |
683 | char c; | |
684 | int mri_line_macro; | |
685 | ||
252b5132 RH |
686 | HANDLE_CONDITIONAL_ASSEMBLY (); |
687 | ||
688 | c = get_symbol_end (); | |
689 | ||
690 | /* In MRI mode, the EQU and MACRO pseudoops must | |
691 | be handled specially. */ | |
692 | mri_line_macro = 0; | |
693 | if (flag_m68k_mri) | |
694 | { | |
695 | char *rest = input_line_pointer + 1; | |
696 | ||
697 | if (*rest == ':') | |
698 | ++rest; | |
699 | if (*rest == ' ' || *rest == '\t') | |
700 | ++rest; | |
701 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
702 | || strncasecmp (rest, "SET", 3) == 0) | |
703 | && (rest[3] == ' ' || rest[3] == '\t')) | |
704 | { | |
705 | input_line_pointer = rest + 3; | |
706 | equals (line_start, | |
707 | strncasecmp (rest, "SET", 3) == 0); | |
708 | continue; | |
709 | } | |
710 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
711 | && (rest[5] == ' ' | |
712 | || rest[5] == '\t' | |
713 | || is_end_of_line[(unsigned char) rest[5]])) | |
714 | mri_line_macro = 1; | |
715 | } | |
716 | ||
717 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
718 | pseudo-op specially: we don't want to put the |
719 | symbol in the symbol table. */ | |
041ff4dd | 720 | if (!mri_line_macro |
a25c045a | 721 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
722 | && TC_START_LABEL_WITHOUT_COLON(c, |
723 | input_line_pointer) | |
a25c045a | 724 | #endif |
ef99799a | 725 | ) |
252b5132 RH |
726 | line_label = colon (line_start); |
727 | else | |
728 | line_label = symbol_create (line_start, | |
729 | absolute_section, | |
730 | (valueT) 0, | |
731 | &zero_address_frag); | |
732 | ||
733 | *input_line_pointer = c; | |
734 | if (c == ':') | |
735 | input_line_pointer++; | |
736 | } | |
737 | } | |
738 | } | |
739 | ||
47eebc20 | 740 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
741 | We expect a well-formed assembler statement. |
742 | A "symbol-name:" is a statement. | |
f0e652b4 | 743 | |
041ff4dd NC |
744 | Depending on what compiler is used, the order of these tests |
745 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
746 | Each test is independent of all other tests at the (top) |
747 | level. */ | |
748 | do | |
041ff4dd | 749 | c = *input_line_pointer++; |
d2bdaea8 | 750 | while (c == '\t' || c == ' ' || c == '\f'); |
252b5132 | 751 | |
041ff4dd NC |
752 | /* C is the 1st significant character. |
753 | Input_line_pointer points after that character. */ | |
252b5132 RH |
754 | if (is_name_beginner (c)) |
755 | { | |
041ff4dd | 756 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
757 | HANDLE_CONDITIONAL_ASSEMBLY (); |
758 | ||
759 | s = --input_line_pointer; | |
041ff4dd NC |
760 | c = get_symbol_end (); /* name's delimiter. */ |
761 | ||
762 | /* C is character after symbol. | |
d6415f6c AM |
763 | That character's place in the input line is now '\0'. |
764 | S points to the beginning of the symbol. | |
765 | [In case of pseudo-op, s->'.'.] | |
766 | Input_line_pointer->'\0' where c was. */ | |
5e8c8f8f | 767 | if (TC_START_LABEL (c, s, input_line_pointer)) |
252b5132 RH |
768 | { |
769 | if (flag_m68k_mri) | |
770 | { | |
771 | char *rest = input_line_pointer + 1; | |
772 | ||
773 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
774 | if (*rest == ':') |
775 | ++rest; | |
f0e652b4 | 776 | |
252b5132 RH |
777 | if (*rest == ' ' || *rest == '\t') |
778 | ++rest; | |
f0e652b4 | 779 | |
252b5132 RH |
780 | if ((strncasecmp (rest, "EQU", 3) == 0 |
781 | || strncasecmp (rest, "SET", 3) == 0) | |
782 | && (rest[3] == ' ' || rest[3] == '\t')) | |
783 | { | |
784 | input_line_pointer = rest + 3; | |
785 | equals (s, 1); | |
786 | continue; | |
787 | } | |
788 | } | |
789 | ||
041ff4dd NC |
790 | line_label = colon (s); /* User-defined label. */ |
791 | /* Put ':' back for error messages' sake. */ | |
792 | *input_line_pointer++ = ':'; | |
a645d1eb L |
793 | #ifdef tc_check_label |
794 | tc_check_label (line_label); | |
795 | #endif | |
041ff4dd | 796 | /* Input_line_pointer->after ':'. */ |
252b5132 | 797 | SKIP_WHITESPACE (); |
252b5132 | 798 | } |
18d7868b HPN |
799 | else if ((c == '=' && input_line_pointer[1] == '=') |
800 | || ((c == ' ' || c == '\t') | |
801 | && input_line_pointer[1] == '=' | |
802 | && input_line_pointer[2] == '=')) | |
9497f5ac NC |
803 | { |
804 | equals (s, -1); | |
805 | demand_empty_rest_of_line (); | |
806 | } | |
ee3c9814 CM |
807 | else if ((c == '=' |
808 | || ((c == ' ' || c == '\t') | |
809 | && input_line_pointer[1] == '=')) | |
810 | #ifdef TC_EQUAL_IN_INSN | |
811 | && !TC_EQUAL_IN_INSN (c, s) | |
812 | #endif | |
813 | ) | |
252b5132 RH |
814 | { |
815 | equals (s, 1); | |
816 | demand_empty_rest_of_line (); | |
817 | } | |
818 | else | |
041ff4dd NC |
819 | { |
820 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
821 | pop = NULL; |
822 | ||
a8a3b3b2 | 823 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
824 | { |
825 | char *s2 = s; | |
37d8bb27 NC |
826 | |
827 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
828 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 829 | |
252b5132 RH |
830 | while (*s2) |
831 | { | |
3882b010 | 832 | *s2 = TOLOWER (*s2); |
252b5132 RH |
833 | s2++; |
834 | } | |
835 | } | |
836 | #endif | |
abd63a32 | 837 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 838 | { |
7be1c489 AM |
839 | /* The MRI assembler uses pseudo-ops without |
840 | a period. */ | |
252b5132 RH |
841 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
842 | if (pop != NULL && pop->poc_handler == NULL) | |
843 | pop = NULL; | |
844 | } | |
845 | ||
846 | if (pop != NULL | |
041ff4dd | 847 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 848 | { |
041ff4dd | 849 | /* PSEUDO - OP. |
f0e652b4 | 850 | |
d6415f6c AM |
851 | WARNING: c has next char, which may be end-of-line. |
852 | We lookup the pseudo-op table with s+1 because we | |
853 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
854 | |
855 | if (pop == NULL) | |
856 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
857 | if (pop && !pop->poc_handler) |
858 | pop = NULL; | |
252b5132 RH |
859 | |
860 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
861 | automatic alignment directive. What a hack |
862 | this is. */ | |
252b5132 RH |
863 | if (mri_pending_align |
864 | && (pop == NULL | |
041ff4dd NC |
865 | || !((pop->poc_handler == cons |
866 | && pop->poc_val == 1) | |
867 | || (pop->poc_handler == s_space | |
868 | && pop->poc_val == 1) | |
252b5132 | 869 | #ifdef tc_conditional_pseudoop |
041ff4dd | 870 | || tc_conditional_pseudoop (pop) |
252b5132 | 871 | #endif |
041ff4dd NC |
872 | || pop->poc_handler == s_if |
873 | || pop->poc_handler == s_ifdef | |
874 | || pop->poc_handler == s_ifc | |
875 | || pop->poc_handler == s_ifeqs | |
876 | || pop->poc_handler == s_else | |
877 | || pop->poc_handler == s_endif | |
878 | || pop->poc_handler == s_globl | |
879 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
880 | { |
881 | do_align (1, (char *) NULL, 0, 0); | |
882 | mri_pending_align = 0; | |
f0e652b4 | 883 | |
252b5132 RH |
884 | if (line_label != NULL) |
885 | { | |
2b47531b | 886 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
887 | S_SET_VALUE (line_label, frag_now_fix ()); |
888 | } | |
889 | } | |
890 | ||
041ff4dd | 891 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
892 | if (pop == NULL) |
893 | { | |
5e75c3ab JB |
894 | char *end = input_line_pointer; |
895 | ||
252b5132 RH |
896 | *input_line_pointer = c; |
897 | s_ignore (0); | |
5e75c3ab JB |
898 | c = *--input_line_pointer; |
899 | *input_line_pointer = '\0'; | |
900 | if (! macro_defined || ! try_macro (c, s)) | |
901 | { | |
902 | *end = '\0'; | |
903 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
904 | *input_line_pointer++ = c; | |
905 | } | |
252b5132 RH |
906 | continue; |
907 | } | |
908 | ||
041ff4dd | 909 | /* Put it back for error messages etc. */ |
252b5132 RH |
910 | *input_line_pointer = c; |
911 | /* The following skip of whitespace is compulsory. | |
912 | A well shaped space is sometimes all that separates | |
041ff4dd | 913 | keyword from operands. */ |
252b5132 RH |
914 | if (c == ' ' || c == '\t') |
915 | input_line_pointer++; | |
041ff4dd NC |
916 | |
917 | /* Input_line is restored. | |
d6415f6c AM |
918 | Input_line_pointer->1st non-blank char |
919 | after pseudo-operation. */ | |
252b5132 RH |
920 | (*pop->poc_handler) (pop->poc_val); |
921 | ||
922 | /* If that was .end, just get out now. */ | |
923 | if (pop->poc_handler == s_end) | |
924 | goto quit; | |
925 | } | |
926 | else | |
927 | { | |
041ff4dd NC |
928 | /* WARNING: c has char, which may be end-of-line. */ |
929 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 | 930 | *input_line_pointer = c; |
7592cfd7 | 931 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
252b5132 RH |
932 | c = *input_line_pointer; |
933 | *input_line_pointer = '\0'; | |
934 | ||
935 | generate_lineno_debug (); | |
936 | ||
5e75c3ab JB |
937 | if (macro_defined && try_macro (c, s)) |
938 | continue; | |
252b5132 RH |
939 | |
940 | if (mri_pending_align) | |
941 | { | |
942 | do_align (1, (char *) NULL, 0, 0); | |
943 | mri_pending_align = 0; | |
944 | if (line_label != NULL) | |
945 | { | |
2b47531b | 946 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
947 | S_SET_VALUE (line_label, frag_now_fix ()); |
948 | } | |
949 | } | |
950 | ||
041ff4dd | 951 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
952 | |
953 | *input_line_pointer++ = c; | |
954 | ||
955 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
956 | this instruction. */ |
957 | } | |
958 | } | |
252b5132 | 959 | continue; |
041ff4dd | 960 | } |
252b5132 RH |
961 | |
962 | /* Empty statement? */ | |
963 | if (is_end_of_line[(unsigned char) c]) | |
964 | continue; | |
965 | ||
3882b010 | 966 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 967 | { |
041ff4dd | 968 | /* local label ("4:") */ |
252b5132 RH |
969 | char *backup = input_line_pointer; |
970 | ||
971 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
972 | ||
973 | temp = c - '0'; | |
974 | ||
041ff4dd | 975 | /* Read the whole number. */ |
3882b010 | 976 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
977 | { |
978 | temp = (temp * 10) + *input_line_pointer - '0'; | |
979 | ++input_line_pointer; | |
041ff4dd | 980 | } |
252b5132 RH |
981 | |
982 | if (LOCAL_LABELS_DOLLAR | |
983 | && *input_line_pointer == '$' | |
984 | && *(input_line_pointer + 1) == ':') | |
985 | { | |
986 | input_line_pointer += 2; | |
987 | ||
988 | if (dollar_label_defined (temp)) | |
989 | { | |
990 | as_fatal (_("label \"%d$\" redefined"), temp); | |
991 | } | |
992 | ||
993 | define_dollar_label (temp); | |
994 | colon (dollar_label_name (temp, 0)); | |
995 | continue; | |
996 | } | |
997 | ||
998 | if (LOCAL_LABELS_FB | |
999 | && *input_line_pointer++ == ':') | |
1000 | { | |
1001 | fb_label_instance_inc (temp); | |
1002 | colon (fb_label_name (temp, 0)); | |
1003 | continue; | |
1004 | } | |
1005 | ||
1006 | input_line_pointer = backup; | |
1007 | } /* local label ("4:") */ | |
1008 | ||
1009 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 1010 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1011 | sb sbuf; |
252b5132 RH |
1012 | char *ends; |
1013 | char *new_buf; | |
1014 | char *new_tmp; | |
1015 | unsigned int new_length; | |
1016 | char *tmp_buf = 0; | |
1017 | ||
252b5132 RH |
1018 | s = input_line_pointer; |
1019 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1020 | { |
1021 | /* We ignore it. */ | |
1022 | ignore_rest_of_line (); | |
1023 | continue; | |
1024 | } | |
1025 | bump_line_counters (); | |
252b5132 RH |
1026 | s += 4; |
1027 | ||
64e55042 | 1028 | sb_new (&sbuf); |
252b5132 RH |
1029 | ends = strstr (s, "#NO_APP\n"); |
1030 | ||
1031 | if (!ends) | |
1032 | { | |
1033 | unsigned int tmp_len; | |
1034 | unsigned int num; | |
1035 | ||
1036 | /* The end of the #APP wasn't in this buffer. We | |
1037 | keep reading in buffers until we find the #NO_APP | |
1038 | that goes with this #APP There is one. The specs | |
47eebc20 | 1039 | guarantee it... */ |
252b5132 | 1040 | tmp_len = buffer_limit - s; |
1e9cc1c2 | 1041 | tmp_buf = (char *) xmalloc (tmp_len + 1); |
252b5132 RH |
1042 | memcpy (tmp_buf, s, tmp_len); |
1043 | do | |
1044 | { | |
1045 | new_tmp = input_scrub_next_buffer (&buffer); | |
1046 | if (!new_tmp) | |
1047 | break; | |
1048 | else | |
1049 | buffer_limit = new_tmp; | |
1050 | input_line_pointer = buffer; | |
1051 | ends = strstr (buffer, "#NO_APP\n"); | |
1052 | if (ends) | |
1053 | num = ends - buffer; | |
1054 | else | |
1055 | num = buffer_limit - buffer; | |
1056 | ||
1e9cc1c2 | 1057 | tmp_buf = (char *) xrealloc (tmp_buf, tmp_len + num); |
252b5132 RH |
1058 | memcpy (tmp_buf + tmp_len, buffer, num); |
1059 | tmp_len += num; | |
1060 | } | |
1061 | while (!ends); | |
1062 | ||
1063 | input_line_pointer = ends ? ends + 8 : NULL; | |
1064 | ||
1065 | s = tmp_buf; | |
1066 | ends = s + tmp_len; | |
1067 | ||
1068 | } | |
1069 | else | |
1070 | { | |
1071 | input_line_pointer = ends + 8; | |
1072 | } | |
1073 | ||
1074 | scrub_string = s; | |
1075 | scrub_string_end = ends; | |
1076 | ||
1077 | new_length = ends - s; | |
1078 | new_buf = (char *) xmalloc (new_length); | |
1079 | new_tmp = new_buf; | |
1080 | for (;;) | |
1081 | { | |
1082 | int space; | |
1083 | int size; | |
1084 | ||
1085 | space = (new_buf + new_length) - new_tmp; | |
1086 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1087 | ||
1088 | if (size < space) | |
1089 | { | |
64e55042 | 1090 | new_tmp[size] = 0; |
252b5132 RH |
1091 | break; |
1092 | } | |
1093 | ||
1e9cc1c2 | 1094 | new_buf = (char *) xrealloc (new_buf, new_length + 100); |
252b5132 RH |
1095 | new_tmp = new_buf + new_length; |
1096 | new_length += 100; | |
1097 | } | |
1098 | ||
1099 | if (tmp_buf) | |
1100 | free (tmp_buf); | |
f0e652b4 | 1101 | |
64e55042 HPN |
1102 | /* We've "scrubbed" input to the preferred format. In the |
1103 | process we may have consumed the whole of the remaining | |
1104 | file (and included files). We handle this formatted | |
1105 | input similar to that of macro expansion, letting | |
1106 | actual macro expansion (possibly nested) and other | |
1107 | input expansion work. Beware that in messages, line | |
1108 | numbers and possibly file names will be incorrect. */ | |
1109 | sb_add_string (&sbuf, new_buf); | |
1110 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); | |
1111 | sb_kill (&sbuf); | |
1112 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1113 | free (new_buf); | |
252b5132 RH |
1114 | continue; |
1115 | } | |
1116 | ||
1117 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1118 | ||
1119 | #ifdef tc_unrecognized_line | |
1120 | if (tc_unrecognized_line (c)) | |
1121 | continue; | |
1122 | #endif | |
0e389e77 | 1123 | input_line_pointer--; |
601e61cd | 1124 | /* Report unknown char as error. */ |
c95b35a9 | 1125 | demand_empty_rest_of_line (); |
041ff4dd | 1126 | } |
252b5132 RH |
1127 | |
1128 | #ifdef md_after_pass_hook | |
1129 | md_after_pass_hook (); | |
1130 | #endif | |
041ff4dd | 1131 | } |
252b5132 RH |
1132 | |
1133 | quit: | |
1134 | ||
1135 | #ifdef md_cleanup | |
041ff4dd | 1136 | md_cleanup (); |
252b5132 | 1137 | #endif |
041ff4dd NC |
1138 | /* Close the input file. */ |
1139 | input_scrub_close (); | |
4c400d5e AM |
1140 | #ifdef WARN_COMMENTS |
1141 | { | |
1142 | if (warn_comment && found_comment) | |
1143 | as_warn_where (found_comment_file, found_comment, | |
1144 | "first comment found here"); | |
1145 | } | |
1146 | #endif | |
252b5132 RH |
1147 | } |
1148 | ||
e5604d79 RS |
1149 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
1150 | Take the sign of the number from X_unsigned rather than X_add_number. */ | |
1151 | ||
1152 | static void | |
1153 | convert_to_bignum (expressionS *exp) | |
1154 | { | |
1155 | valueT value; | |
1156 | unsigned int i; | |
1157 | ||
1158 | value = exp->X_add_number; | |
1159 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1160 | { | |
1161 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1162 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1163 | } | |
1164 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1165 | the sign of the original value. */ | |
1166 | if ((exp->X_add_number < 0) != !exp->X_unsigned) | |
1167 | generic_bignum[i++] = exp->X_unsigned ? 0 : LITTLENUM_MASK; | |
1168 | exp->X_op = O_big; | |
1169 | exp->X_add_number = i; | |
1170 | } | |
1171 | ||
252b5132 RH |
1172 | /* For most MRI pseudo-ops, the line actually ends at the first |
1173 | nonquoted space. This function looks for that point, stuffs a null | |
1174 | in, and sets *STOPCP to the character that used to be there, and | |
1175 | returns the location. | |
1176 | ||
1177 | Until I hear otherwise, I am going to assume that this is only true | |
1178 | for the m68k MRI assembler. */ | |
1179 | ||
1180 | char * | |
39e6acbd | 1181 | mri_comment_field (char *stopcp) |
252b5132 | 1182 | { |
252b5132 | 1183 | char *s; |
041ff4dd | 1184 | #ifdef TC_M68K |
252b5132 RH |
1185 | int inquote = 0; |
1186 | ||
1187 | know (flag_m68k_mri); | |
1188 | ||
1189 | for (s = input_line_pointer; | |
041ff4dd | 1190 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1191 | || inquote); |
1192 | s++) | |
1193 | { | |
1194 | if (*s == '\'') | |
041ff4dd | 1195 | inquote = !inquote; |
252b5132 | 1196 | } |
252b5132 | 1197 | #else |
041ff4dd NC |
1198 | for (s = input_line_pointer; |
1199 | !is_end_of_line[(unsigned char) *s]; | |
1200 | s++) | |
252b5132 | 1201 | ; |
041ff4dd | 1202 | #endif |
252b5132 RH |
1203 | *stopcp = *s; |
1204 | *s = '\0'; | |
f0e652b4 | 1205 | |
252b5132 | 1206 | return s; |
252b5132 RH |
1207 | } |
1208 | ||
1209 | /* Skip to the end of an MRI comment field. */ | |
1210 | ||
1211 | void | |
39e6acbd | 1212 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1213 | { |
1214 | know (flag_mri); | |
1215 | ||
1216 | input_line_pointer = stop; | |
1217 | *stop = stopc; | |
041ff4dd | 1218 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1219 | ++input_line_pointer; |
1220 | } | |
1221 | ||
041ff4dd | 1222 | void |
39e6acbd | 1223 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1224 | { |
1225 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1226 | } | |
1227 | ||
1228 | /* Guts of .align directive. N is the power of two to which to align. | |
1229 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1230 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1231 | the maximum number of characters to skip when doing the alignment, | |
1232 | or 0 if there is no maximum. */ | |
1233 | ||
041ff4dd | 1234 | static void |
39e6acbd | 1235 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1236 | { |
ebeb9253 AM |
1237 | if (now_seg == absolute_section) |
1238 | { | |
1239 | if (fill != NULL) | |
1240 | while (len-- > 0) | |
1241 | if (*fill++ != '\0') | |
1242 | { | |
1243 | as_warn (_("ignoring fill value in absolute section")); | |
1244 | break; | |
1245 | } | |
1246 | fill = NULL; | |
1247 | len = 0; | |
1248 | } | |
1249 | ||
b8861cfb NS |
1250 | #ifdef md_flush_pending_output |
1251 | md_flush_pending_output (); | |
1252 | #endif | |
252b5132 RH |
1253 | #ifdef md_do_align |
1254 | md_do_align (n, fill, len, max, just_record_alignment); | |
1255 | #endif | |
1256 | ||
041ff4dd | 1257 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1258 | if (n != 0 && !need_pass_2) |
1259 | { | |
0a9ef439 RH |
1260 | if (fill == NULL) |
1261 | { | |
1262 | if (subseg_text_p (now_seg)) | |
1263 | frag_align_code (n, max); | |
1264 | else | |
1265 | frag_align (n, 0, max); | |
1266 | } | |
1267 | else if (len <= 1) | |
252b5132 RH |
1268 | frag_align (n, *fill, max); |
1269 | else | |
1270 | frag_align_pattern (n, fill, len, max); | |
1271 | } | |
1272 | ||
1273 | #ifdef md_do_align | |
a6bd2a4f | 1274 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1275 | #endif |
1276 | ||
bea9907b | 1277 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1278 | } |
1279 | ||
1280 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1281 | (in bytes). A negative ARG is the negative of the length of the | |
1282 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1283 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1284 | #ifndef TC_ALIGN_LIMIT |
1285 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1286 | #endif | |
9ebd302d | 1287 | |
252b5132 | 1288 | static void |
39e6acbd | 1289 | s_align (int arg, int bytes_p) |
252b5132 | 1290 | { |
11ec4ba9 | 1291 | unsigned int align_limit = TC_ALIGN_LIMIT; |
9ebd302d | 1292 | unsigned int align; |
252b5132 | 1293 | char *stop = NULL; |
fb25138b | 1294 | char stopc = 0; |
252b5132 RH |
1295 | offsetT fill = 0; |
1296 | int max; | |
1297 | int fill_p; | |
1298 | ||
1299 | if (flag_mri) | |
1300 | stop = mri_comment_field (&stopc); | |
1301 | ||
1302 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1303 | { | |
1304 | if (arg < 0) | |
1305 | align = 0; | |
1306 | else | |
041ff4dd | 1307 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1308 | } |
1309 | else | |
1310 | { | |
1311 | align = get_absolute_expression (); | |
1312 | SKIP_WHITESPACE (); | |
1313 | } | |
1314 | ||
1315 | if (bytes_p) | |
1316 | { | |
1317 | /* Convert to a power of 2. */ | |
1318 | if (align != 0) | |
1319 | { | |
1320 | unsigned int i; | |
1321 | ||
1322 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1323 | ; | |
1324 | if (align != 1) | |
0e389e77 | 1325 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1326 | |
252b5132 RH |
1327 | align = i; |
1328 | } | |
1329 | } | |
1330 | ||
b617dc20 | 1331 | if (align > align_limit) |
252b5132 | 1332 | { |
b617dc20 | 1333 | align = align_limit; |
0e389e77 | 1334 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1335 | } |
1336 | ||
1337 | if (*input_line_pointer != ',') | |
1338 | { | |
1339 | fill_p = 0; | |
1340 | max = 0; | |
1341 | } | |
1342 | else | |
1343 | { | |
1344 | ++input_line_pointer; | |
1345 | if (*input_line_pointer == ',') | |
1346 | fill_p = 0; | |
1347 | else | |
1348 | { | |
1349 | fill = get_absolute_expression (); | |
1350 | SKIP_WHITESPACE (); | |
1351 | fill_p = 1; | |
1352 | } | |
1353 | ||
1354 | if (*input_line_pointer != ',') | |
1355 | max = 0; | |
1356 | else | |
1357 | { | |
1358 | ++input_line_pointer; | |
1359 | max = get_absolute_expression (); | |
1360 | } | |
1361 | } | |
1362 | ||
041ff4dd | 1363 | if (!fill_p) |
252b5132 RH |
1364 | { |
1365 | if (arg < 0) | |
1366 | as_warn (_("expected fill pattern missing")); | |
1367 | do_align (align, (char *) NULL, 0, max); | |
1368 | } | |
1369 | else | |
1370 | { | |
1371 | int fill_len; | |
1372 | ||
1373 | if (arg >= 0) | |
1374 | fill_len = 1; | |
1375 | else | |
041ff4dd | 1376 | fill_len = -arg; |
252b5132 RH |
1377 | if (fill_len <= 1) |
1378 | { | |
1379 | char fill_char; | |
1380 | ||
1381 | fill_char = fill; | |
1382 | do_align (align, &fill_char, fill_len, max); | |
1383 | } | |
1384 | else | |
1385 | { | |
1386 | char ab[16]; | |
1387 | ||
1388 | if ((size_t) fill_len > sizeof ab) | |
1389 | abort (); | |
1390 | md_number_to_chars (ab, fill, fill_len); | |
1391 | do_align (align, ab, fill_len, max); | |
1392 | } | |
1393 | } | |
1394 | ||
1395 | demand_empty_rest_of_line (); | |
1396 | ||
1397 | if (flag_mri) | |
1398 | mri_comment_end (stop, stopc); | |
1399 | } | |
1400 | ||
1401 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1402 | align to a 4 byte boundary. */ | |
1403 | ||
041ff4dd | 1404 | void |
39e6acbd | 1405 | s_align_bytes (int arg) |
252b5132 RH |
1406 | { |
1407 | s_align (arg, 1); | |
1408 | } | |
1409 | ||
1410 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1411 | to a 2**4 boundary. */ | |
1412 | ||
041ff4dd | 1413 | void |
39e6acbd | 1414 | s_align_ptwo (int arg) |
252b5132 RH |
1415 | { |
1416 | s_align (arg, 0); | |
1417 | } | |
1418 | ||
caa32fe5 NC |
1419 | /* Switch in and out of alternate macro mode. */ |
1420 | ||
1421 | void | |
1422 | s_altmacro (int on) | |
1423 | { | |
1424 | demand_empty_rest_of_line (); | |
1425 | macro_set_alternate (on); | |
1426 | } | |
1427 | ||
e13bab5a AM |
1428 | symbolS * |
1429 | s_comm_internal (int param, | |
1430 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1431 | { |
e13bab5a AM |
1432 | char *name; |
1433 | char c; | |
1434 | char *p; | |
1435 | offsetT temp, size; | |
1436 | symbolS *symbolP = NULL; | |
252b5132 | 1437 | char *stop = NULL; |
fb25138b | 1438 | char stopc = 0; |
e13bab5a | 1439 | expressionS exp; |
252b5132 RH |
1440 | |
1441 | if (flag_mri) | |
1442 | stop = mri_comment_field (&stopc); | |
1443 | ||
1444 | name = input_line_pointer; | |
1445 | c = get_symbol_end (); | |
041ff4dd | 1446 | /* Just after name is now '\0'. */ |
252b5132 RH |
1447 | p = input_line_pointer; |
1448 | *p = c; | |
0e389e77 AM |
1449 | |
1450 | if (name == p) | |
1451 | { | |
1452 | as_bad (_("expected symbol name")); | |
40a4d956 | 1453 | ignore_rest_of_line (); |
e13bab5a | 1454 | goto out; |
0e389e77 AM |
1455 | } |
1456 | ||
252b5132 | 1457 | SKIP_WHITESPACE (); |
f0e652b4 | 1458 | |
e13bab5a AM |
1459 | /* Accept an optional comma after the name. The comma used to be |
1460 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1461 | if (*input_line_pointer == ',') | |
1462 | input_line_pointer++; | |
1463 | ||
e13bab5a AM |
1464 | temp = get_absolute_expr (&exp); |
1465 | size = temp; | |
e13bab5a | 1466 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1467 | if (exp.X_op == O_absent) |
252b5132 | 1468 | { |
e13bab5a | 1469 | as_bad (_("missing size expression")); |
252b5132 | 1470 | ignore_rest_of_line (); |
e13bab5a | 1471 | goto out; |
252b5132 | 1472 | } |
e13bab5a | 1473 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1474 | { |
e13bab5a | 1475 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1476 | ignore_rest_of_line (); |
e13bab5a | 1477 | goto out; |
252b5132 | 1478 | } |
f0e652b4 | 1479 | |
a207757e | 1480 | *p = 0; |
252b5132 | 1481 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1482 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1483 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1484 | { |
92757bc9 JB |
1485 | if (!S_IS_VOLATILE (symbolP)) |
1486 | { | |
1487 | symbolP = NULL; | |
1488 | as_bad (_("symbol `%s' is already defined"), name); | |
1489 | *p = c; | |
1490 | ignore_rest_of_line (); | |
1491 | goto out; | |
1492 | } | |
89cdfe57 | 1493 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1494 | S_SET_SEGMENT (symbolP, undefined_section); |
1495 | S_SET_VALUE (symbolP, 0); | |
1496 | symbol_set_frag (symbolP, &zero_address_frag); | |
1497 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1498 | } |
f0e652b4 | 1499 | |
e13bab5a AM |
1500 | size = S_GET_VALUE (symbolP); |
1501 | if (size == 0) | |
1502 | size = temp; | |
1503 | else if (size != temp) | |
1504 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1505 | name, (long) size, (long) temp); | |
1506 | ||
1507 | *p = c; | |
1508 | if (comm_parse_extra != NULL) | |
1509 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1510 | else |
1511 | { | |
e13bab5a | 1512 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1513 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1514 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
252b5132 | 1515 | #ifdef OBJ_VMS |
e13bab5a AM |
1516 | { |
1517 | extern int flag_one; | |
1518 | if (size == 0 || !flag_one) | |
1519 | S_GET_OTHER (symbolP) = const_flag; | |
1520 | } | |
1521 | #endif | |
1522 | } | |
252b5132 RH |
1523 | |
1524 | demand_empty_rest_of_line (); | |
e13bab5a | 1525 | out: |
252b5132 RH |
1526 | if (flag_mri) |
1527 | mri_comment_end (stop, stopc); | |
e13bab5a AM |
1528 | return symbolP; |
1529 | } | |
1530 | ||
1531 | void | |
1532 | s_comm (int ignore) | |
1533 | { | |
1534 | s_comm_internal (ignore, NULL); | |
1535 | } | |
252b5132 RH |
1536 | |
1537 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1538 | symbol with the appropriate name. We make s_space do the right | |
1539 | thing by increasing the size. */ | |
1540 | ||
1541 | void | |
39e6acbd | 1542 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1543 | { |
1544 | char *name; | |
1545 | char c; | |
1546 | char *alc = NULL; | |
1547 | symbolS *sym; | |
1548 | offsetT align; | |
1549 | char *stop = NULL; | |
fb25138b | 1550 | char stopc = 0; |
252b5132 | 1551 | |
041ff4dd | 1552 | if (!flag_mri) |
252b5132 RH |
1553 | { |
1554 | s_comm (0); | |
1555 | return; | |
1556 | } | |
1557 | ||
1558 | stop = mri_comment_field (&stopc); | |
1559 | ||
1560 | SKIP_WHITESPACE (); | |
1561 | ||
1562 | name = input_line_pointer; | |
3882b010 | 1563 | if (!ISDIGIT (*name)) |
252b5132 RH |
1564 | c = get_symbol_end (); |
1565 | else | |
1566 | { | |
1567 | do | |
1568 | { | |
1569 | ++input_line_pointer; | |
1570 | } | |
3882b010 | 1571 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1572 | |
252b5132 RH |
1573 | c = *input_line_pointer; |
1574 | *input_line_pointer = '\0'; | |
1575 | ||
1576 | if (line_label != NULL) | |
1577 | { | |
1578 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1579 | + (input_line_pointer - name) | |
1580 | + 1); | |
1581 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1582 | name = alc; | |
1583 | } | |
1584 | } | |
1585 | ||
1586 | sym = symbol_find_or_make (name); | |
1587 | *input_line_pointer = c; | |
1588 | if (alc != NULL) | |
1589 | free (alc); | |
1590 | ||
1591 | if (*input_line_pointer != ',') | |
1592 | align = 0; | |
1593 | else | |
1594 | { | |
1595 | ++input_line_pointer; | |
1596 | align = get_absolute_expression (); | |
1597 | } | |
1598 | ||
041ff4dd | 1599 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1600 | { |
0e389e77 | 1601 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1602 | ignore_rest_of_line (); |
1603 | mri_comment_end (stop, stopc); | |
1604 | return; | |
1605 | } | |
1606 | ||
1607 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1608 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1609 | mri_common_symbol = sym; |
1610 | ||
1611 | #ifdef S_SET_ALIGN | |
1612 | if (align != 0) | |
1613 | S_SET_ALIGN (sym, align); | |
1614 | #endif | |
1615 | ||
1616 | if (line_label != NULL) | |
1617 | { | |
2b47531b ILT |
1618 | expressionS exp; |
1619 | exp.X_op = O_symbol; | |
1620 | exp.X_add_symbol = sym; | |
1621 | exp.X_add_number = 0; | |
1622 | symbol_set_value_expression (line_label, &exp); | |
1623 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1624 | S_SET_SEGMENT (line_label, expr_section); |
1625 | } | |
1626 | ||
1627 | /* FIXME: We just ignore the small argument, which distinguishes | |
1628 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1629 | ||
1630 | /* Ignore the type and hptype. */ | |
1631 | if (*input_line_pointer == ',') | |
1632 | input_line_pointer += 2; | |
1633 | if (*input_line_pointer == ',') | |
1634 | input_line_pointer += 2; | |
1635 | ||
1636 | demand_empty_rest_of_line (); | |
1637 | ||
1638 | mri_comment_end (stop, stopc); | |
1639 | } | |
1640 | ||
1641 | void | |
39e6acbd | 1642 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1643 | { |
1644 | segT section; | |
1645 | register int temp; | |
1646 | ||
1647 | temp = get_absolute_expression (); | |
1648 | if (flag_readonly_data_in_text) | |
1649 | { | |
1650 | section = text_section; | |
1651 | temp += 1000; | |
1652 | } | |
1653 | else | |
1654 | section = data_section; | |
1655 | ||
1656 | subseg_set (section, (subsegT) temp); | |
1657 | ||
1658 | #ifdef OBJ_VMS | |
1659 | const_flag = 0; | |
1660 | #endif | |
1661 | demand_empty_rest_of_line (); | |
1662 | } | |
1663 | ||
1664 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1665 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1666 | file name. This default definition may be overridden by the object | |
1667 | or CPU specific pseudo-ops. This function is also the default | |
1668 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1669 | .file. */ | |
1670 | ||
ecb4347a | 1671 | void |
f17c130b | 1672 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1673 | { |
1674 | #ifdef LISTING | |
1675 | if (listing) | |
1676 | listing_source_file (file); | |
1677 | #endif | |
1678 | register_dependency (file); | |
1679 | #ifdef obj_app_file | |
c04f5787 | 1680 | obj_app_file (file, appfile); |
ecb4347a DJ |
1681 | #endif |
1682 | } | |
1683 | ||
041ff4dd | 1684 | void |
39e6acbd | 1685 | s_app_file (int appfile) |
252b5132 RH |
1686 | { |
1687 | register char *s; | |
1688 | int length; | |
1689 | ||
041ff4dd | 1690 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1691 | if ((s = demand_copy_string (&length)) != 0) |
1692 | { | |
252b5132 | 1693 | int may_omit |
93e914b2 | 1694 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
1695 | |
1696 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1697 | backquote. */ |
252b5132 RH |
1698 | if (flag_m68k_mri |
1699 | && *input_line_pointer == '\'' | |
1700 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1701 | ++input_line_pointer; | |
1702 | ||
1703 | demand_empty_rest_of_line (); | |
041ff4dd | 1704 | if (!may_omit) |
c04f5787 | 1705 | s_app_file_string (s, appfile); |
252b5132 RH |
1706 | } |
1707 | } | |
1708 | ||
e9fc6c21 AO |
1709 | static int |
1710 | get_linefile_number (int *flag) | |
1711 | { | |
1712 | SKIP_WHITESPACE (); | |
1713 | ||
1714 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
1715 | return 0; | |
1716 | ||
1717 | *flag = get_absolute_expression (); | |
1718 | ||
1719 | return 1; | |
1720 | } | |
1721 | ||
252b5132 RH |
1722 | /* Handle the .appline pseudo-op. This is automatically generated by |
1723 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1724 | default definition may be overridden by the object or CPU specific | |
1725 | pseudo-ops. */ | |
1726 | ||
1727 | void | |
93e914b2 | 1728 | s_app_line (int appline) |
252b5132 | 1729 | { |
e9fc6c21 | 1730 | char *file = NULL; |
252b5132 RH |
1731 | int l; |
1732 | ||
1733 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
1734 | if (appline) |
1735 | l = get_absolute_expression (); | |
1736 | else if (!get_linefile_number (&l)) | |
1737 | { | |
1738 | ignore_rest_of_line (); | |
1739 | return; | |
1740 | } | |
1741 | ||
1742 | l--; | |
47837f8e NC |
1743 | |
1744 | if (l < -1) | |
252b5132 | 1745 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
1746 | Besides, it's silly. GCC however will generate a line number of |
1747 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
1748 | ||
1749 | # 0 "<built-in>" | |
1750 | ||
1751 | We do not want to barf on this, especially since such files are used | |
1752 | in the GCC and GDB testsuites. So we check for negative line numbers | |
1753 | rather than non-positive line numbers. */ | |
0e389e77 | 1754 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1755 | l + 1); |
252b5132 RH |
1756 | else |
1757 | { | |
93e914b2 | 1758 | int flags = 0; |
93e914b2 AO |
1759 | int length = 0; |
1760 | ||
1761 | if (!appline) | |
1762 | { | |
e9fc6c21 AO |
1763 | SKIP_WHITESPACE (); |
1764 | ||
1765 | if (*input_line_pointer == '"') | |
1766 | file = demand_copy_string (&length); | |
93e914b2 AO |
1767 | |
1768 | if (file) | |
1769 | { | |
1770 | int this_flag; | |
1771 | ||
e9fc6c21 | 1772 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
1773 | switch (this_flag) |
1774 | { | |
1775 | /* From GCC's cpp documentation: | |
1776 | 1: start of a new file. | |
1777 | 2: returning to a file after having included | |
1778 | another file. | |
1779 | 3: following text comes from a system header file. | |
1780 | 4: following text should be treated as extern "C". | |
1781 | ||
1782 | 4 is nonsensical for the assembler; 3, we don't | |
1783 | care about, so we ignore it just in case a | |
1784 | system header file is included while | |
1785 | preprocessing assembly. So 1 and 2 are all we | |
1786 | care about, and they are mutually incompatible. | |
1787 | new_logical_line_flags() demands this. */ | |
1788 | case 1: | |
1789 | case 2: | |
1790 | if (flags && flags != (1 << this_flag)) | |
1791 | as_warn (_("incompatible flag %i in line directive"), | |
1792 | this_flag); | |
1793 | else | |
1794 | flags |= 1 << this_flag; | |
1795 | break; | |
1796 | ||
1797 | case 3: | |
1798 | case 4: | |
1799 | /* We ignore these. */ | |
1800 | break; | |
1801 | ||
1802 | default: | |
1803 | as_warn (_("unsupported flag %i in line directive"), | |
1804 | this_flag); | |
1805 | break; | |
1806 | } | |
e9fc6c21 AO |
1807 | |
1808 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
1809 | file = 0; | |
93e914b2 AO |
1810 | } |
1811 | } | |
1812 | ||
e9fc6c21 AO |
1813 | if (appline || file) |
1814 | { | |
1815 | new_logical_line_flags (file, l, flags); | |
252b5132 | 1816 | #ifdef LISTING |
e9fc6c21 AO |
1817 | if (listing) |
1818 | listing_source_line (l); | |
252b5132 | 1819 | #endif |
e9fc6c21 | 1820 | } |
252b5132 | 1821 | } |
e9fc6c21 AO |
1822 | if (appline || file) |
1823 | demand_empty_rest_of_line (); | |
1824 | else | |
1825 | ignore_rest_of_line (); | |
252b5132 RH |
1826 | } |
1827 | ||
1828 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1829 | read_a_source_file. */ | |
1830 | ||
1831 | void | |
39e6acbd | 1832 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1833 | { |
1834 | if (flag_mri) | |
1835 | { | |
1836 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 1837 | but we don't support that. */ |
252b5132 | 1838 | SKIP_WHITESPACE (); |
041ff4dd | 1839 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1840 | && *input_line_pointer != '*' |
1841 | && *input_line_pointer != '!') | |
1842 | as_warn (_("start address not supported")); | |
1843 | } | |
1844 | } | |
1845 | ||
1846 | /* Handle the .err pseudo-op. */ | |
1847 | ||
1848 | void | |
39e6acbd | 1849 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1850 | { |
1851 | as_bad (_(".err encountered")); | |
1852 | demand_empty_rest_of_line (); | |
d190d046 HPN |
1853 | } |
1854 | ||
1855 | /* Handle the .error and .warning pseudo-ops. */ | |
1856 | ||
1857 | void | |
1858 | s_errwarn (int err) | |
1859 | { | |
1860 | int len; | |
1861 | /* The purpose for the conditional assignment is not to | |
1862 | internationalize the directive itself, but that we need a | |
1863 | self-contained message, one that can be passed like the | |
1864 | demand_copy_C_string return value, and with no assumption on the | |
1865 | location of the name of the directive within the message. */ | |
1866 | char *msg | |
1867 | = (err ? _(".error directive invoked in source file") | |
1868 | : _(".warning directive invoked in source file")); | |
1869 | ||
1870 | if (!is_it_end_of_statement ()) | |
1871 | { | |
1872 | if (*input_line_pointer != '\"') | |
1873 | { | |
1874 | as_bad (_("%s argument must be a string"), | |
1875 | err ? ".error" : ".warning"); | |
40a4d956 | 1876 | ignore_rest_of_line (); |
d190d046 HPN |
1877 | return; |
1878 | } | |
1879 | ||
1880 | msg = demand_copy_C_string (&len); | |
1881 | if (msg == NULL) | |
1882 | return; | |
1883 | } | |
1884 | ||
1885 | if (err) | |
1886 | as_bad ("%s", msg); | |
1887 | else | |
1888 | as_warn ("%s", msg); | |
1889 | demand_empty_rest_of_line (); | |
252b5132 RH |
1890 | } |
1891 | ||
1892 | /* Handle the MRI fail pseudo-op. */ | |
1893 | ||
1894 | void | |
39e6acbd | 1895 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1896 | { |
1897 | offsetT temp; | |
1898 | char *stop = NULL; | |
fb25138b | 1899 | char stopc = 0; |
252b5132 RH |
1900 | |
1901 | if (flag_mri) | |
1902 | stop = mri_comment_field (&stopc); | |
1903 | ||
1904 | temp = get_absolute_expression (); | |
1905 | if (temp >= 500) | |
1906 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1907 | else | |
1908 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1909 | ||
1910 | demand_empty_rest_of_line (); | |
1911 | ||
1912 | if (flag_mri) | |
1913 | mri_comment_end (stop, stopc); | |
1914 | } | |
1915 | ||
041ff4dd | 1916 | void |
39e6acbd | 1917 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1918 | { |
1919 | expressionS rep_exp; | |
1920 | long size = 1; | |
1921 | register long fill = 0; | |
1922 | char *p; | |
1923 | ||
1924 | #ifdef md_flush_pending_output | |
1925 | md_flush_pending_output (); | |
1926 | #endif | |
1927 | ||
cc3f603a JM |
1928 | #ifdef md_cons_align |
1929 | md_cons_align (1); | |
1930 | #endif | |
1931 | ||
252b5132 RH |
1932 | get_known_segmented_expression (&rep_exp); |
1933 | if (*input_line_pointer == ',') | |
1934 | { | |
1935 | input_line_pointer++; | |
1936 | size = get_absolute_expression (); | |
1937 | if (*input_line_pointer == ',') | |
1938 | { | |
1939 | input_line_pointer++; | |
1940 | fill = get_absolute_expression (); | |
1941 | } | |
1942 | } | |
1943 | ||
1944 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1945 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1946 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1947 | { | |
0e389e77 | 1948 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
1949 | size = BSD_FILL_SIZE_CROCK_8; |
1950 | } | |
1951 | if (size < 0) | |
1952 | { | |
0e389e77 | 1953 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
1954 | size = 0; |
1955 | } | |
1956 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1957 | { | |
1958 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 1959 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
1960 | size = 0; |
1961 | } | |
1962 | ||
1963 | if (size && !need_pass_2) | |
1964 | { | |
1965 | if (rep_exp.X_op == O_constant) | |
1966 | { | |
1967 | p = frag_var (rs_fill, (int) size, (int) size, | |
1968 | (relax_substateT) 0, (symbolS *) 0, | |
1969 | (offsetT) rep_exp.X_add_number, | |
1970 | (char *) 0); | |
1971 | } | |
1972 | else | |
1973 | { | |
1974 | /* We don't have a constant repeat count, so we can't use | |
1975 | rs_fill. We can get the same results out of rs_space, | |
1976 | but its argument is in bytes, so we must multiply the | |
1977 | repeat count by size. */ | |
1978 | ||
1979 | symbolS *rep_sym; | |
1980 | rep_sym = make_expr_symbol (&rep_exp); | |
1981 | if (size != 1) | |
1982 | { | |
1983 | expressionS size_exp; | |
1984 | size_exp.X_op = O_constant; | |
1985 | size_exp.X_add_number = size; | |
1986 | ||
1987 | rep_exp.X_op = O_multiply; | |
1988 | rep_exp.X_add_symbol = rep_sym; | |
1989 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1990 | rep_exp.X_add_number = 0; | |
1991 | rep_sym = make_expr_symbol (&rep_exp); | |
1992 | } | |
1993 | ||
1994 | p = frag_var (rs_space, (int) size, (int) size, | |
1995 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1996 | } | |
f0e652b4 | 1997 | |
252b5132 | 1998 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 1999 | |
252b5132 | 2000 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2001 | flavoured AS. The following bizarre behaviour is to be |
2002 | compatible with above. I guess they tried to take up to 8 | |
2003 | bytes from a 4-byte expression and they forgot to sign | |
2004 | extend. */ | |
252b5132 RH |
2005 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2006 | md_number_to_chars (p, (valueT) fill, | |
2007 | (size > BSD_FILL_SIZE_CROCK_4 | |
2008 | ? BSD_FILL_SIZE_CROCK_4 | |
2009 | : (int) size)); | |
2010 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2011 | but emits no error message because it seems a legal thing to do. |
2012 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2013 | compiler. */ |
252b5132 RH |
2014 | } |
2015 | demand_empty_rest_of_line (); | |
2016 | } | |
2017 | ||
041ff4dd | 2018 | void |
39e6acbd | 2019 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2020 | { |
2021 | char *name; | |
2022 | int c; | |
2023 | symbolS *symbolP; | |
2024 | char *stop = NULL; | |
fb25138b | 2025 | char stopc = 0; |
252b5132 RH |
2026 | |
2027 | if (flag_mri) | |
2028 | stop = mri_comment_field (&stopc); | |
2029 | ||
2030 | do | |
2031 | { | |
2032 | name = input_line_pointer; | |
2033 | c = get_symbol_end (); | |
2034 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
2035 | S_SET_EXTERNAL (symbolP); |
2036 | ||
252b5132 RH |
2037 | *input_line_pointer = c; |
2038 | SKIP_WHITESPACE (); | |
58b5739a | 2039 | c = *input_line_pointer; |
252b5132 RH |
2040 | if (c == ',') |
2041 | { | |
2042 | input_line_pointer++; | |
2043 | SKIP_WHITESPACE (); | |
0e389e77 | 2044 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2045 | c = '\n'; |
2046 | } | |
2047 | } | |
2048 | while (c == ','); | |
2049 | ||
2050 | demand_empty_rest_of_line (); | |
2051 | ||
2052 | if (flag_mri) | |
2053 | mri_comment_end (stop, stopc); | |
2054 | } | |
2055 | ||
104d59d1 JM |
2056 | #ifdef OBJ_ELF |
2057 | #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0) | |
2058 | ||
2059 | static inline int | |
2060 | skip_past_char (char ** str, char c) | |
2061 | { | |
2062 | if (**str == c) | |
2063 | { | |
2064 | (*str)++; | |
2065 | return 0; | |
2066 | } | |
2067 | else | |
2068 | return -1; | |
2069 | } | |
2070 | #define skip_past_comma(str) skip_past_char (str, ',') | |
2071 | ||
ee3c0378 AS |
2072 | /* Parse an attribute directive for VENDOR. |
2073 | Returns the attribute number read, or zero on error. */ | |
2074 | int | |
104d59d1 JM |
2075 | s_vendor_attribute (int vendor) |
2076 | { | |
2077 | expressionS exp; | |
2078 | int type; | |
2079 | int tag; | |
2080 | unsigned int i = 0; | |
2081 | char *s = NULL; | |
104d59d1 | 2082 | |
e04befd0 AS |
2083 | /* Read the first number or name. */ |
2084 | skip_whitespace (input_line_pointer); | |
2085 | s = input_line_pointer; | |
2086 | if (ISDIGIT (*input_line_pointer)) | |
2087 | { | |
2088 | expression (& exp); | |
2089 | if (exp.X_op != O_constant) | |
2090 | goto bad; | |
2091 | tag = exp.X_add_number; | |
2092 | } | |
2093 | else | |
2094 | { | |
2095 | char *name; | |
2096 | ||
2097 | /* A name may contain '_', but no other punctuation. */ | |
2098 | for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_'; | |
2099 | ++input_line_pointer) | |
2100 | i++; | |
2101 | if (i == 0) | |
2102 | goto bad; | |
2103 | ||
1e9cc1c2 | 2104 | name = (char *) alloca (i + 1); |
e04befd0 AS |
2105 | memcpy (name, s, i); |
2106 | name[i] = '\0'; | |
2107 | ||
2108 | #ifndef CONVERT_SYMBOLIC_ATTRIBUTE | |
2109 | #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1 | |
2110 | #endif | |
2111 | ||
2112 | tag = CONVERT_SYMBOLIC_ATTRIBUTE (name); | |
2113 | if (tag == -1) | |
2114 | { | |
2115 | as_bad (_("Attribute name not recognised: %s"), name); | |
2116 | ignore_rest_of_line (); | |
ee3c0378 | 2117 | return 0; |
e04befd0 AS |
2118 | } |
2119 | } | |
104d59d1 | 2120 | |
104d59d1 JM |
2121 | type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag); |
2122 | ||
2123 | if (skip_past_comma (&input_line_pointer) == -1) | |
2124 | goto bad; | |
2125 | if (type & 1) | |
2126 | { | |
2127 | expression (& exp); | |
2128 | if (exp.X_op != O_constant) | |
2129 | { | |
2130 | as_bad (_("expected numeric constant")); | |
2131 | ignore_rest_of_line (); | |
ee3c0378 | 2132 | return 0; |
104d59d1 JM |
2133 | } |
2134 | i = exp.X_add_number; | |
2135 | } | |
2d0bb761 | 2136 | if ((type & 3) == 3 |
104d59d1 JM |
2137 | && skip_past_comma (&input_line_pointer) == -1) |
2138 | { | |
2139 | as_bad (_("expected comma")); | |
2140 | ignore_rest_of_line (); | |
ee3c0378 | 2141 | return 0; |
104d59d1 JM |
2142 | } |
2143 | if (type & 2) | |
2144 | { | |
e04befd0 AS |
2145 | int len; |
2146 | ||
2147 | skip_whitespace (input_line_pointer); | |
104d59d1 JM |
2148 | if (*input_line_pointer != '"') |
2149 | goto bad_string; | |
e04befd0 | 2150 | s = demand_copy_C_string (&len); |
104d59d1 JM |
2151 | } |
2152 | ||
2d0bb761 | 2153 | switch (type & 3) |
104d59d1 JM |
2154 | { |
2155 | case 3: | |
7b86a9fa | 2156 | bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s); |
104d59d1 JM |
2157 | break; |
2158 | case 2: | |
2159 | bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s); | |
2160 | break; | |
2161 | case 1: | |
2162 | bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i); | |
2163 | break; | |
2164 | default: | |
2165 | abort (); | |
2166 | } | |
2167 | ||
104d59d1 | 2168 | demand_empty_rest_of_line (); |
ee3c0378 | 2169 | return tag; |
104d59d1 JM |
2170 | bad_string: |
2171 | as_bad (_("bad string constant")); | |
2172 | ignore_rest_of_line (); | |
ee3c0378 | 2173 | return 0; |
104d59d1 JM |
2174 | bad: |
2175 | as_bad (_("expected <tag> , <value>")); | |
2176 | ignore_rest_of_line (); | |
ee3c0378 | 2177 | return 0; |
104d59d1 JM |
2178 | } |
2179 | ||
2180 | /* Parse a .gnu_attribute directive. */ | |
2181 | ||
2182 | static void | |
2183 | s_gnu_attribute (int ignored ATTRIBUTE_UNUSED) | |
2184 | { | |
2185 | s_vendor_attribute (OBJ_ATTR_GNU); | |
2186 | } | |
2187 | #endif /* OBJ_ELF */ | |
2188 | ||
252b5132 RH |
2189 | /* Handle the MRI IRP and IRPC pseudo-ops. */ |
2190 | ||
2191 | void | |
39e6acbd | 2192 | s_irp (int irpc) |
252b5132 | 2193 | { |
40a4d956 | 2194 | char *file, *eol; |
252b5132 RH |
2195 | unsigned int line; |
2196 | sb s; | |
2197 | const char *err; | |
2198 | sb out; | |
2199 | ||
2200 | as_where (&file, &line); | |
2201 | ||
2202 | sb_new (&s); | |
40a4d956 JB |
2203 | eol = find_end_of_line (input_line_pointer, 0); |
2204 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2205 | input_line_pointer = eol; | |
252b5132 RH |
2206 | |
2207 | sb_new (&out); | |
2208 | ||
7592cfd7 | 2209 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2210 | if (err != NULL) |
2211 | as_bad_where (file, line, "%s", err); | |
2212 | ||
2213 | sb_kill (&s); | |
2214 | ||
9f10757c | 2215 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2216 | sb_kill (&out); |
2217 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2218 | } | |
2219 | ||
2220 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2221 | the section to only be linked once. However, this is not supported | |
2222 | by most object file formats. This takes an optional argument, | |
2223 | which is what to do about duplicates. */ | |
2224 | ||
2225 | void | |
39e6acbd | 2226 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2227 | { |
2228 | enum linkonce_type type; | |
2229 | ||
2230 | SKIP_WHITESPACE (); | |
2231 | ||
2232 | type = LINKONCE_DISCARD; | |
2233 | ||
041ff4dd | 2234 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2235 | { |
2236 | char *s; | |
2237 | char c; | |
2238 | ||
2239 | s = input_line_pointer; | |
2240 | c = get_symbol_end (); | |
2241 | if (strcasecmp (s, "discard") == 0) | |
2242 | type = LINKONCE_DISCARD; | |
2243 | else if (strcasecmp (s, "one_only") == 0) | |
2244 | type = LINKONCE_ONE_ONLY; | |
2245 | else if (strcasecmp (s, "same_size") == 0) | |
2246 | type = LINKONCE_SAME_SIZE; | |
2247 | else if (strcasecmp (s, "same_contents") == 0) | |
2248 | type = LINKONCE_SAME_CONTENTS; | |
2249 | else | |
2250 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2251 | ||
2252 | *input_line_pointer = c; | |
2253 | } | |
2254 | ||
2255 | #ifdef obj_handle_link_once | |
2256 | obj_handle_link_once (type); | |
2257 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2258 | { |
2259 | flagword flags; | |
2260 | ||
2261 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2262 | as_warn (_(".linkonce is not supported for this object file format")); | |
2263 | ||
2264 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2265 | flags |= SEC_LINK_ONCE; | |
2266 | switch (type) | |
2267 | { | |
2268 | default: | |
2269 | abort (); | |
2270 | case LINKONCE_DISCARD: | |
2271 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2272 | break; | |
2273 | case LINKONCE_ONE_ONLY: | |
2274 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2275 | break; | |
2276 | case LINKONCE_SAME_SIZE: | |
2277 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2278 | break; | |
2279 | case LINKONCE_SAME_CONTENTS: | |
2280 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2281 | break; | |
2282 | } | |
041ff4dd | 2283 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2284 | as_bad (_("bfd_set_section_flags: %s"), |
2285 | bfd_errmsg (bfd_get_error ())); | |
2286 | } | |
252b5132 RH |
2287 | #endif /* ! defined (obj_handle_link_once) */ |
2288 | ||
2289 | demand_empty_rest_of_line (); | |
2290 | } | |
2291 | ||
e13bab5a AM |
2292 | void |
2293 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2294 | { |
e13bab5a | 2295 | char *pfrag; |
252b5132 RH |
2296 | segT current_seg = now_seg; |
2297 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2298 | segT bss_seg = bss_section; |
2299 | ||
252b5132 RH |
2300 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2301 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2302 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2303 | { | |
2304 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2305 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2306 | { |
2307 | bss_seg = subseg_new (".sbss", 1); | |
2308 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2309 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2310 | as_warn (_("error setting flags for \".sbss\": %s"), |
2311 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2312 | } |
2313 | } | |
2314 | #endif | |
e13bab5a | 2315 | subseg_set (bss_seg, 1); |
8684e216 | 2316 | |
e13bab5a | 2317 | if (align) |
041ff4dd | 2318 | { |
e13bab5a AM |
2319 | record_alignment (bss_seg, align); |
2320 | frag_align (align, 0, 0); | |
041ff4dd | 2321 | } |
252b5132 | 2322 | |
e13bab5a AM |
2323 | /* Detach from old frag. */ |
2324 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2325 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2326 | |
e13bab5a AM |
2327 | symbol_set_frag (symbolP, frag_now); |
2328 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2329 | *pfrag = 0; | |
f0e652b4 | 2330 | |
e13bab5a AM |
2331 | #ifdef S_SET_SIZE |
2332 | S_SET_SIZE (symbolP, size); | |
2333 | #endif | |
2334 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2335 | |
e13bab5a AM |
2336 | #ifdef OBJ_COFF |
2337 | /* The symbol may already have been created with a preceding | |
2338 | ".globl" directive -- be careful not to step on storage class | |
2339 | in that case. Otherwise, set it to static. */ | |
2340 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2341 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2342 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2343 | |
e13bab5a AM |
2344 | subseg_set (current_seg, current_subseg); |
2345 | } | |
f0e652b4 | 2346 | |
e13bab5a AM |
2347 | offsetT |
2348 | parse_align (int align_bytes) | |
2349 | { | |
2350 | expressionS exp; | |
2351 | addressT align; | |
252b5132 | 2352 | |
e13bab5a AM |
2353 | SKIP_WHITESPACE (); |
2354 | if (*input_line_pointer != ',') | |
2355 | { | |
2356 | no_align: | |
2357 | as_bad (_("expected alignment after size")); | |
2358 | ignore_rest_of_line (); | |
2359 | return -1; | |
2360 | } | |
f0e652b4 | 2361 | |
e13bab5a AM |
2362 | input_line_pointer++; |
2363 | SKIP_WHITESPACE (); | |
f0e652b4 | 2364 | |
e13bab5a AM |
2365 | align = get_absolute_expr (&exp); |
2366 | if (exp.X_op == O_absent) | |
2367 | goto no_align; | |
2368 | ||
2369 | if (!exp.X_unsigned) | |
2370 | { | |
2371 | as_warn (_("alignment negative; 0 assumed")); | |
2372 | align = 0; | |
041ff4dd | 2373 | } |
e13bab5a AM |
2374 | |
2375 | if (align_bytes && align != 0) | |
252b5132 | 2376 | { |
e13bab5a AM |
2377 | /* convert to a power of 2 alignment */ |
2378 | unsigned int alignp2 = 0; | |
2379 | while ((align & 1) == 0) | |
2380 | align >>= 1, ++alignp2; | |
2381 | if (align != 1) | |
252b5132 | 2382 | { |
e13bab5a AM |
2383 | as_bad (_("alignment not a power of 2")); |
2384 | ignore_rest_of_line (); | |
2385 | return -1; | |
252b5132 | 2386 | } |
e13bab5a | 2387 | align = alignp2; |
252b5132 | 2388 | } |
e13bab5a AM |
2389 | return align; |
2390 | } | |
252b5132 | 2391 | |
e13bab5a AM |
2392 | /* Called from s_comm_internal after symbol name and size have been |
2393 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2394 | 1 if this was a ".bss" directive which has a 3rd argument | |
2395 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2396 | with alignment in bytes. */ | |
252b5132 | 2397 | |
13c56984 | 2398 | symbolS * |
e13bab5a AM |
2399 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2400 | { | |
2401 | addressT align = 0; | |
252b5132 | 2402 | |
e13bab5a AM |
2403 | if (needs_align) |
2404 | { | |
2405 | align = parse_align (needs_align - 1); | |
2406 | if (align == (addressT) -1) | |
2407 | return NULL; | |
252b5132 RH |
2408 | } |
2409 | else | |
e13bab5a AM |
2410 | /* Assume some objects may require alignment on some systems. */ |
2411 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2412 | |
e13bab5a AM |
2413 | bss_alloc (symbolP, size, align); |
2414 | return symbolP; | |
041ff4dd | 2415 | } |
252b5132 RH |
2416 | |
2417 | void | |
39e6acbd | 2418 | s_lcomm (int needs_align) |
252b5132 | 2419 | { |
e13bab5a | 2420 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2421 | } |
2422 | ||
041ff4dd | 2423 | void |
39e6acbd | 2424 | s_lcomm_bytes (int needs_align) |
252b5132 | 2425 | { |
e13bab5a | 2426 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2427 | } |
2428 | ||
041ff4dd | 2429 | void |
39e6acbd | 2430 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2431 | { |
2432 | register char *name; | |
2433 | register char c; | |
2434 | register char *p; | |
2435 | expressionS exp; | |
2436 | register symbolS *symbolP; | |
2437 | ||
041ff4dd | 2438 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2439 | name = input_line_pointer; |
2440 | c = get_symbol_end (); | |
2441 | p = input_line_pointer; | |
2442 | *p = c; | |
0e389e77 AM |
2443 | |
2444 | if (name == p) | |
2445 | { | |
2446 | as_bad (_("expected symbol name")); | |
40a4d956 | 2447 | ignore_rest_of_line (); |
0e389e77 AM |
2448 | return; |
2449 | } | |
2450 | ||
252b5132 | 2451 | SKIP_WHITESPACE (); |
f0e652b4 | 2452 | |
252b5132 RH |
2453 | if (*input_line_pointer != ',') |
2454 | { | |
2455 | *p = 0; | |
0e389e77 | 2456 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2457 | *p = c; |
2458 | ignore_rest_of_line (); | |
2459 | return; | |
2460 | } | |
f0e652b4 | 2461 | |
252b5132 | 2462 | input_line_pointer++; |
9497f5ac | 2463 | expression_and_evaluate (&exp); |
f0e652b4 | 2464 | |
252b5132 RH |
2465 | if (exp.X_op != O_constant |
2466 | && exp.X_op != O_register) | |
2467 | { | |
2468 | as_bad (_("bad expression")); | |
2469 | ignore_rest_of_line (); | |
2470 | return; | |
2471 | } | |
f0e652b4 | 2472 | |
252b5132 RH |
2473 | *p = 0; |
2474 | symbolP = symbol_find_or_make (name); | |
2475 | ||
86ebace2 | 2476 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2477 | { |
2478 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2479 | keep the "external" bit. */ |
252b5132 RH |
2480 | S_SET_SEGMENT (symbolP, |
2481 | (exp.X_op == O_constant | |
2482 | ? absolute_section | |
2483 | : reg_section)); | |
2484 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2485 | } | |
2486 | else | |
2487 | { | |
0e389e77 | 2488 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2489 | } |
f0e652b4 | 2490 | |
252b5132 RH |
2491 | *p = c; |
2492 | demand_empty_rest_of_line (); | |
041ff4dd | 2493 | } |
252b5132 | 2494 | |
0822d075 NC |
2495 | /* Read a line into an sb. Returns the character that ended the line |
2496 | or zero if there are no more lines. */ | |
252b5132 RH |
2497 | |
2498 | static int | |
7592cfd7 | 2499 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2500 | { |
40a4d956 | 2501 | char *eol; |
252b5132 RH |
2502 | |
2503 | if (input_line_pointer[-1] == '\n') | |
2504 | bump_line_counters (); | |
2505 | ||
2506 | if (input_line_pointer >= buffer_limit) | |
2507 | { | |
2508 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2509 | if (buffer_limit == 0) | |
2510 | return 0; | |
2511 | } | |
2512 | ||
7592cfd7 | 2513 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2514 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2515 | input_line_pointer = eol; | |
f0e652b4 | 2516 | |
0822d075 NC |
2517 | /* Don't skip multiple end-of-line characters, because that breaks support |
2518 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2519 | characters but isn't. Instead just skip one end of line character and | |
2520 | return the character skipped so that the caller can re-insert it if | |
2521 | necessary. */ | |
40a4d956 | 2522 | return *input_line_pointer++; |
252b5132 RH |
2523 | } |
2524 | ||
7592cfd7 NC |
2525 | static int |
2526 | get_non_macro_line_sb (sb *line) | |
2527 | { | |
2528 | return get_line_sb (line, 0); | |
2529 | } | |
2530 | ||
2531 | static int | |
2532 | get_macro_line_sb (sb *line) | |
2533 | { | |
2534 | return get_line_sb (line, 1); | |
2535 | } | |
2536 | ||
fea17916 | 2537 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2538 | |
2539 | void | |
39e6acbd | 2540 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2541 | { |
40a4d956 | 2542 | char *file, *eol; |
252b5132 RH |
2543 | unsigned int line; |
2544 | sb s; | |
252b5132 RH |
2545 | const char *err; |
2546 | const char *name; | |
2547 | ||
2548 | as_where (&file, &line); | |
2549 | ||
2550 | sb_new (&s); | |
40a4d956 JB |
2551 | eol = find_end_of_line (input_line_pointer, 0); |
2552 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2553 | input_line_pointer = eol; | |
252b5132 | 2554 | |
252b5132 | 2555 | if (line_label != NULL) |
360e86f1 JB |
2556 | { |
2557 | sb label; | |
252b5132 | 2558 | |
360e86f1 JB |
2559 | sb_new (&label); |
2560 | sb_add_string (&label, S_GET_NAME (line_label)); | |
7592cfd7 | 2561 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2562 | sb_kill (&label); |
2563 | } | |
2564 | else | |
7592cfd7 | 2565 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2566 | if (err != NULL) |
02ddf156 | 2567 | as_bad_where (file, line, err, name); |
252b5132 RH |
2568 | else |
2569 | { | |
2570 | if (line_label != NULL) | |
2571 | { | |
5e75c3ab | 2572 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2573 | S_SET_VALUE (line_label, 0); |
2b47531b | 2574 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2575 | } |
2576 | ||
abd63a32 | 2577 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2578 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2579 | || (!flag_m68k_mri |
252b5132 RH |
2580 | && *name == '.' |
2581 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2582 | as_warn_where (file, |
2583 | line, | |
2584 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2585 | name); |
2586 | } | |
2587 | ||
2588 | sb_kill (&s); | |
2589 | } | |
2590 | ||
2591 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2592 | expansion. */ | |
2593 | ||
2594 | void | |
39e6acbd | 2595 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2596 | { |
5808f4a6 NC |
2597 | if (macro_nest) |
2598 | { | |
2599 | cond_exit_macro (macro_nest); | |
2600 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2601 | } | |
2602 | else | |
2603 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2604 | } |
2605 | ||
2606 | /* Switch in and out of MRI mode. */ | |
2607 | ||
2608 | void | |
39e6acbd | 2609 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2610 | { |
2611 | int on, old_flag; | |
2612 | ||
2613 | on = get_absolute_expression (); | |
2614 | old_flag = flag_mri; | |
2615 | if (on != 0) | |
2616 | { | |
2617 | flag_mri = 1; | |
2618 | #ifdef TC_M68K | |
2619 | flag_m68k_mri = 1; | |
2620 | #endif | |
2621 | macro_mri_mode (1); | |
2622 | } | |
2623 | else | |
2624 | { | |
2625 | flag_mri = 0; | |
abd63a32 | 2626 | #ifdef TC_M68K |
252b5132 | 2627 | flag_m68k_mri = 0; |
abd63a32 | 2628 | #endif |
252b5132 RH |
2629 | macro_mri_mode (0); |
2630 | } | |
2631 | ||
2632 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2633 | update the operator rankings. */ | |
2634 | expr_set_precedence (); | |
2635 | ||
2636 | #ifdef MRI_MODE_CHANGE | |
2637 | if (on != old_flag) | |
2638 | MRI_MODE_CHANGE (on); | |
2639 | #endif | |
2640 | ||
2641 | demand_empty_rest_of_line (); | |
2642 | } | |
2643 | ||
2644 | /* Handle changing the location counter. */ | |
2645 | ||
2646 | static void | |
39e6acbd | 2647 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 RH |
2648 | { |
2649 | if (segment != now_seg && segment != absolute_section) | |
0e389e77 | 2650 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2651 | |
2652 | if (now_seg == absolute_section) | |
2653 | { | |
2654 | if (fill != 0) | |
2655 | as_warn (_("ignoring fill value in absolute section")); | |
2656 | if (exp->X_op != O_constant) | |
2657 | { | |
2658 | as_bad (_("only constant offsets supported in absolute section")); | |
2659 | exp->X_add_number = 0; | |
2660 | } | |
2661 | abs_section_offset = exp->X_add_number; | |
2662 | } | |
2663 | else | |
2664 | { | |
2665 | char *p; | |
2289f85d AM |
2666 | symbolS *sym = exp->X_add_symbol; |
2667 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2668 | |
2289f85d AM |
2669 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2670 | { | |
2671 | /* Handle complex expressions. */ | |
2672 | sym = make_expr_symbol (exp); | |
2673 | off = 0; | |
2674 | } | |
2675 | ||
2676 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2677 | *p = fill; |
2678 | } | |
2679 | } | |
2680 | ||
041ff4dd | 2681 | void |
39e6acbd | 2682 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2683 | { |
2684 | register segT segment; | |
2685 | expressionS exp; | |
2686 | register long temp_fill; | |
2687 | ||
2688 | #ifdef md_flush_pending_output | |
2689 | md_flush_pending_output (); | |
2690 | #endif | |
2691 | ||
2692 | /* The m68k MRI assembler has a different meaning for .org. It | |
2693 | means to create an absolute section at a given address. We can't | |
2694 | support that--use a linker script instead. */ | |
2695 | if (flag_m68k_mri) | |
2696 | { | |
2697 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2698 | ignore_rest_of_line (); | |
2699 | return; | |
2700 | } | |
2701 | ||
2702 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2703 | thing as a sub-segment-relative origin. Any absolute origin is | |
2704 | given a warning, then assumed to be segment-relative. Any | |
2705 | segmented origin expression ("foo+42") had better be in the right | |
2706 | segment or the .org is ignored. | |
2707 | ||
2708 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2709 | we never know sub-segment sizes when we are reading code. BSD | |
2710 | will crash trying to emit negative numbers of filler bytes in | |
2711 | certain .orgs. We don't crash, but see as-write for that code. | |
2712 | ||
2713 | Don't make frag if need_pass_2==1. */ | |
2714 | segment = get_known_segmented_expression (&exp); | |
2715 | if (*input_line_pointer == ',') | |
2716 | { | |
2717 | input_line_pointer++; | |
2718 | temp_fill = get_absolute_expression (); | |
2719 | } | |
2720 | else | |
2721 | temp_fill = 0; | |
2722 | ||
2723 | if (!need_pass_2) | |
2724 | do_org (segment, &exp, temp_fill); | |
2725 | ||
2726 | demand_empty_rest_of_line (); | |
041ff4dd | 2727 | } |
252b5132 RH |
2728 | |
2729 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2730 | called by the obj-format routine which handles section changing | |
2731 | when in MRI mode. It will create a new section, and return it. It | |
2732 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2733 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2734 | |
2735 | void | |
39e6acbd | 2736 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2737 | { |
2738 | #ifdef TC_M68K | |
2739 | ||
2740 | char *name; | |
2741 | char c; | |
2742 | segT seg; | |
2743 | ||
2744 | SKIP_WHITESPACE (); | |
041ff4dd | 2745 | |
252b5132 | 2746 | name = input_line_pointer; |
3882b010 | 2747 | if (!ISDIGIT (*name)) |
252b5132 RH |
2748 | c = get_symbol_end (); |
2749 | else | |
2750 | { | |
2751 | do | |
2752 | { | |
2753 | ++input_line_pointer; | |
2754 | } | |
3882b010 | 2755 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2756 | |
252b5132 RH |
2757 | c = *input_line_pointer; |
2758 | *input_line_pointer = '\0'; | |
2759 | } | |
2760 | ||
2761 | name = xstrdup (name); | |
2762 | ||
2763 | *input_line_pointer = c; | |
2764 | ||
2765 | seg = subseg_new (name, 0); | |
2766 | ||
2767 | if (*input_line_pointer == ',') | |
2768 | { | |
2769 | int align; | |
2770 | ||
2771 | ++input_line_pointer; | |
2772 | align = get_absolute_expression (); | |
2773 | record_alignment (seg, align); | |
2774 | } | |
2775 | ||
2776 | *type = 'C'; | |
2777 | if (*input_line_pointer == ',') | |
2778 | { | |
2779 | c = *++input_line_pointer; | |
3882b010 | 2780 | c = TOUPPER (c); |
252b5132 RH |
2781 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2782 | *type = c; | |
2783 | else | |
2784 | as_bad (_("unrecognized section type")); | |
2785 | ++input_line_pointer; | |
2786 | ||
252b5132 RH |
2787 | { |
2788 | flagword flags; | |
2789 | ||
2790 | flags = SEC_NO_FLAGS; | |
2791 | if (*type == 'C') | |
2792 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2793 | else if (*type == 'D' || *type == 'M') | |
2794 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2795 | else if (*type == 'R') | |
2796 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2797 | if (flags != SEC_NO_FLAGS) | |
2798 | { | |
041ff4dd | 2799 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2800 | as_warn (_("error setting flags for \"%s\": %s"), |
2801 | bfd_section_name (stdoutput, seg), | |
2802 | bfd_errmsg (bfd_get_error ())); | |
2803 | } | |
2804 | } | |
252b5132 RH |
2805 | } |
2806 | ||
2807 | /* Ignore the HP type. */ | |
2808 | if (*input_line_pointer == ',') | |
2809 | input_line_pointer += 2; | |
2810 | ||
2811 | demand_empty_rest_of_line (); | |
2812 | ||
2813 | #else /* ! TC_M68K */ | |
2814 | #ifdef TC_I960 | |
2815 | ||
2816 | char *name; | |
2817 | char c; | |
2818 | segT seg; | |
2819 | ||
2820 | SKIP_WHITESPACE (); | |
2821 | ||
2822 | name = input_line_pointer; | |
2823 | c = get_symbol_end (); | |
2824 | ||
2825 | name = xstrdup (name); | |
2826 | ||
2827 | *input_line_pointer = c; | |
2828 | ||
2829 | seg = subseg_new (name, 0); | |
2830 | ||
2831 | if (*input_line_pointer != ',') | |
2832 | *type = 'C'; | |
2833 | else | |
2834 | { | |
2835 | char *sectype; | |
2836 | ||
2837 | ++input_line_pointer; | |
2838 | SKIP_WHITESPACE (); | |
2839 | sectype = input_line_pointer; | |
2840 | c = get_symbol_end (); | |
2841 | if (*sectype == '\0') | |
2842 | *type = 'C'; | |
2843 | else if (strcasecmp (sectype, "text") == 0) | |
2844 | *type = 'C'; | |
2845 | else if (strcasecmp (sectype, "data") == 0) | |
2846 | *type = 'D'; | |
2847 | else if (strcasecmp (sectype, "romdata") == 0) | |
2848 | *type = 'R'; | |
2849 | else | |
2850 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2851 | *input_line_pointer = c; | |
2852 | } | |
2853 | ||
2854 | if (*input_line_pointer == ',') | |
2855 | { | |
2856 | char *seccmd; | |
2857 | ||
2858 | ++input_line_pointer; | |
2859 | SKIP_WHITESPACE (); | |
2860 | seccmd = input_line_pointer; | |
2861 | c = get_symbol_end (); | |
2862 | if (strcasecmp (seccmd, "absolute") == 0) | |
2863 | { | |
2864 | as_bad (_("absolute sections are not supported")); | |
2865 | *input_line_pointer = c; | |
2866 | ignore_rest_of_line (); | |
2867 | return; | |
2868 | } | |
2869 | else if (strcasecmp (seccmd, "align") == 0) | |
2870 | { | |
2871 | int align; | |
2872 | ||
2873 | *input_line_pointer = c; | |
2874 | align = get_absolute_expression (); | |
2875 | record_alignment (seg, align); | |
2876 | } | |
2877 | else | |
2878 | { | |
2879 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2880 | *input_line_pointer = c; | |
2881 | } | |
2882 | } | |
2883 | ||
041ff4dd | 2884 | demand_empty_rest_of_line (); |
252b5132 RH |
2885 | |
2886 | #else /* ! TC_I960 */ | |
2887 | /* The MRI assembler seems to use different forms of .sect for | |
2888 | different targets. */ | |
2889 | as_bad ("MRI mode not supported for this target"); | |
2890 | ignore_rest_of_line (); | |
2891 | #endif /* ! TC_I960 */ | |
2892 | #endif /* ! TC_M68K */ | |
2893 | } | |
2894 | ||
2895 | /* Handle the .print pseudo-op. */ | |
2896 | ||
2897 | void | |
39e6acbd | 2898 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2899 | { |
2900 | char *s; | |
2901 | int len; | |
2902 | ||
2903 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
2904 | if (s != NULL) |
2905 | printf ("%s\n", s); | |
252b5132 RH |
2906 | demand_empty_rest_of_line (); |
2907 | } | |
2908 | ||
2909 | /* Handle the .purgem pseudo-op. */ | |
2910 | ||
2911 | void | |
39e6acbd | 2912 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2913 | { |
2914 | if (is_it_end_of_statement ()) | |
2915 | { | |
2916 | demand_empty_rest_of_line (); | |
2917 | return; | |
2918 | } | |
2919 | ||
2920 | do | |
2921 | { | |
2922 | char *name; | |
2923 | char c; | |
2924 | ||
2925 | SKIP_WHITESPACE (); | |
2926 | name = input_line_pointer; | |
2927 | c = get_symbol_end (); | |
2928 | delete_macro (name); | |
2929 | *input_line_pointer = c; | |
2930 | SKIP_WHITESPACE (); | |
2931 | } | |
2932 | while (*input_line_pointer++ == ','); | |
2933 | ||
2934 | --input_line_pointer; | |
2935 | demand_empty_rest_of_line (); | |
2936 | } | |
2937 | ||
057f53c1 | 2938 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 2939 | |
057f53c1 JB |
2940 | static void |
2941 | s_bad_end (int endr) | |
7f28ab9d | 2942 | { |
057f53c1 JB |
2943 | as_warn (_(".end%c encountered without preceeding %s"), |
2944 | endr ? 'r' : 'm', | |
2945 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
2946 | demand_empty_rest_of_line (); |
2947 | } | |
2948 | ||
2949 | /* Handle the .rept pseudo-op. */ | |
2950 | ||
252b5132 | 2951 | void |
39e6acbd | 2952 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2953 | { |
2954 | int count; | |
252b5132 RH |
2955 | |
2956 | count = get_absolute_expression (); | |
2957 | ||
041ff4dd | 2958 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2959 | } |
2960 | ||
2961 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2962 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2963 | |
2964 | void | |
39e6acbd | 2965 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
2966 | { |
2967 | sb one; | |
2968 | sb many; | |
2969 | ||
252b5132 | 2970 | sb_new (&one); |
7592cfd7 | 2971 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 2972 | { |
6dc19fc4 | 2973 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2974 | return; |
2975 | } | |
2976 | ||
2977 | sb_new (&many); | |
2978 | while (count-- > 0) | |
2979 | sb_add_sb (&many, &one); | |
2980 | ||
2981 | sb_kill (&one); | |
2982 | ||
9f10757c | 2983 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2984 | sb_kill (&many); |
2985 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2986 | } | |
2987 | ||
c7927a3c NC |
2988 | /* Like do_repeat except that any text matching EXPANDER in the |
2989 | block is replaced by the itteration count. */ | |
2990 | ||
2991 | void | |
2992 | do_repeat_with_expander (int count, | |
2993 | const char * start, | |
2994 | const char * end, | |
2995 | const char * expander) | |
2996 | { | |
2997 | sb one; | |
2998 | sb many; | |
2999 | ||
3000 | sb_new (&one); | |
3001 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3002 | { | |
3003 | as_bad (_("%s without %s"), start, end); | |
3004 | return; | |
3005 | } | |
3006 | ||
3007 | sb_new (&many); | |
3008 | ||
3009 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3010 | { | |
3011 | while (count -- > 0) | |
3012 | { | |
3013 | int len; | |
3014 | char * sub; | |
3015 | sb processed; | |
3016 | ||
3017 | sb_new (& processed); | |
3018 | sb_add_sb (& processed, & one); | |
3019 | sub = strstr (processed.ptr, expander); | |
3020 | len = sprintf (sub, "%d", count); | |
3021 | gas_assert (len < 8); | |
3022 | strcpy (sub + len, sub + 8); | |
3023 | processed.len -= (8 - len); | |
3024 | sb_add_sb (& many, & processed); | |
3025 | sb_kill (& processed); | |
3026 | } | |
3027 | } | |
3028 | else | |
3029 | while (count-- > 0) | |
3030 | sb_add_sb (&many, &one); | |
3031 | ||
3032 | sb_kill (&one); | |
3033 | ||
3034 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3035 | sb_kill (&many); | |
3036 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3037 | } | |
3038 | ||
6dc19fc4 TW |
3039 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3040 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3041 | are properly nested. |
6dc19fc4 TW |
3042 | |
3043 | This function makes it easier to implement a premature "break" out of the | |
3044 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3045 | such as line substitutions. */ |
6dc19fc4 TW |
3046 | |
3047 | void | |
39e6acbd | 3048 | end_repeat (int extra) |
6dc19fc4 TW |
3049 | { |
3050 | cond_exit_macro (macro_nest); | |
3051 | while (extra-- >= 0) | |
3052 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3053 | } | |
3054 | ||
be95a9c1 | 3055 | static void |
9497f5ac | 3056 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3057 | { |
3058 | symbolS *symbolP; | |
3059 | ||
3060 | if (name[0] == '.' && name[1] == '\0') | |
3061 | { | |
3062 | /* Turn '. = mumble' into a .org mumble. */ | |
3063 | segT segment; | |
3064 | expressionS exp; | |
3065 | ||
3066 | segment = get_known_segmented_expression (&exp); | |
3067 | ||
3068 | if (!need_pass_2) | |
3069 | do_org (segment, &exp, 0); | |
3070 | ||
3071 | return; | |
3072 | } | |
3073 | ||
3074 | if ((symbolP = symbol_find (name)) == NULL | |
3075 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3076 | { | |
3077 | symbolP = symbol_find_or_make (name); | |
3078 | #ifndef NO_LISTING | |
3079 | /* When doing symbol listings, play games with dummy fragments living | |
3080 | outside the normal fragment chain to record the file and line info | |
3081 | for this symbol. */ | |
3082 | if (listing & LISTING_SYMBOLS) | |
3083 | { | |
3084 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 3085 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
3086 | dummy_frag->line = listing_tail; |
3087 | dummy_frag->fr_symbol = symbolP; | |
3088 | symbol_set_frag (symbolP, dummy_frag); | |
3089 | } | |
3090 | #endif | |
31d20a21 AM |
3091 | #ifdef OBJ_COFF |
3092 | /* "set" symbols are local unless otherwise specified. */ | |
3093 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3094 | #endif |
3095 | } | |
3096 | ||
6a2b6326 | 3097 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac NC |
3098 | { |
3099 | /* Permit register names to be redefined. */ | |
3100 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) | |
3101 | && S_GET_SEGMENT (symbolP) != reg_section) | |
3102 | { | |
3103 | as_bad (_("symbol `%s' is already defined"), name); | |
3104 | symbolP = symbol_clone (symbolP, 0); | |
3105 | } | |
3106 | /* If the symbol is volatile, copy the symbol and replace the | |
3107 | original with the copy, so that previous uses of the symbol will | |
3108 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3109 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3110 | symbolP = symbol_clone (symbolP, 1); |
3111 | } | |
3112 | ||
3113 | if (mode == 0) | |
3114 | S_SET_VOLATILE (symbolP); | |
3115 | else if (mode < 0) | |
3116 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3117 | |
3118 | pseudo_set (symbolP); | |
be95a9c1 AM |
3119 | } |
3120 | ||
9497f5ac NC |
3121 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3122 | then this is .equiv, and it is an error if the symbol is already | |
3123 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3124 | reference. */ | |
252b5132 | 3125 | |
041ff4dd | 3126 | void |
39e6acbd | 3127 | s_set (int equiv) |
252b5132 | 3128 | { |
be95a9c1 AM |
3129 | char *name; |
3130 | char delim; | |
3131 | char *end_name; | |
252b5132 | 3132 | |
041ff4dd NC |
3133 | /* Especial apologies for the random logic: |
3134 | this just grew, and could be parsed much more simply! | |
3135 | Dean in haste. */ | |
252b5132 RH |
3136 | name = input_line_pointer; |
3137 | delim = get_symbol_end (); | |
3138 | end_name = input_line_pointer; | |
0e389e77 | 3139 | *end_name = delim; |
409d19c4 | 3140 | |
0e389e77 | 3141 | if (name == end_name) |
409d19c4 AM |
3142 | { |
3143 | as_bad (_("expected symbol name")); | |
40a4d956 | 3144 | ignore_rest_of_line (); |
409d19c4 AM |
3145 | return; |
3146 | } | |
3147 | ||
252b5132 RH |
3148 | SKIP_WHITESPACE (); |
3149 | ||
3150 | if (*input_line_pointer != ',') | |
3151 | { | |
3152 | *end_name = 0; | |
0e389e77 | 3153 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
3154 | *end_name = delim; |
3155 | ignore_rest_of_line (); | |
3156 | return; | |
3157 | } | |
3158 | ||
3159 | input_line_pointer++; | |
3160 | *end_name = 0; | |
3161 | ||
be95a9c1 | 3162 | assign_symbol (name, equiv); |
252b5132 | 3163 | *end_name = delim; |
31d20a21 AM |
3164 | |
3165 | demand_empty_rest_of_line (); | |
041ff4dd | 3166 | } |
252b5132 | 3167 | |
041ff4dd | 3168 | void |
39e6acbd | 3169 | s_space (int mult) |
252b5132 RH |
3170 | { |
3171 | expressionS exp; | |
3172 | expressionS val; | |
3173 | char *p = 0; | |
3174 | char *stop = NULL; | |
fb25138b | 3175 | char stopc = 0; |
252b5132 RH |
3176 | int bytes; |
3177 | ||
3178 | #ifdef md_flush_pending_output | |
3179 | md_flush_pending_output (); | |
3180 | #endif | |
3181 | ||
cc3f603a JM |
3182 | #ifdef md_cons_align |
3183 | md_cons_align (1); | |
3184 | #endif | |
3185 | ||
252b5132 RH |
3186 | if (flag_mri) |
3187 | stop = mri_comment_field (&stopc); | |
3188 | ||
3189 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3190 | this is ds.b. */ | |
3191 | if (flag_m68k_mri && mult > 1) | |
3192 | { | |
3193 | if (now_seg == absolute_section) | |
3194 | { | |
3195 | abs_section_offset += abs_section_offset & 1; | |
3196 | if (line_label != NULL) | |
3197 | S_SET_VALUE (line_label, abs_section_offset); | |
3198 | } | |
3199 | else if (mri_common_symbol != NULL) | |
3200 | { | |
3201 | valueT val; | |
3202 | ||
3203 | val = S_GET_VALUE (mri_common_symbol); | |
3204 | if ((val & 1) != 0) | |
3205 | { | |
3206 | S_SET_VALUE (mri_common_symbol, val + 1); | |
3207 | if (line_label != NULL) | |
3208 | { | |
2b47531b ILT |
3209 | expressionS *symexp; |
3210 | ||
3211 | symexp = symbol_get_value_expression (line_label); | |
3212 | know (symexp->X_op == O_symbol); | |
3213 | know (symexp->X_add_symbol == mri_common_symbol); | |
3214 | symexp->X_add_number += 1; | |
252b5132 RH |
3215 | } |
3216 | } | |
3217 | } | |
3218 | else | |
3219 | { | |
3220 | do_align (1, (char *) NULL, 0, 0); | |
3221 | if (line_label != NULL) | |
3222 | { | |
2b47531b | 3223 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3224 | S_SET_VALUE (line_label, frag_now_fix ()); |
3225 | } | |
3226 | } | |
3227 | } | |
3228 | ||
3229 | bytes = mult; | |
3230 | ||
3231 | expression (&exp); | |
3232 | ||
3233 | SKIP_WHITESPACE (); | |
3234 | if (*input_line_pointer == ',') | |
3235 | { | |
3236 | ++input_line_pointer; | |
3237 | expression (&val); | |
3238 | } | |
3239 | else | |
3240 | { | |
3241 | val.X_op = O_constant; | |
3242 | val.X_add_number = 0; | |
3243 | } | |
3244 | ||
3245 | if (val.X_op != O_constant | |
3246 | || val.X_add_number < - 0x80 | |
3247 | || val.X_add_number > 0xff | |
3248 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3249 | { | |
9497f5ac | 3250 | resolve_expression (&exp); |
252b5132 | 3251 | if (exp.X_op != O_constant) |
0e389e77 | 3252 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3253 | else |
3254 | { | |
3255 | offsetT i; | |
3256 | ||
3257 | if (mult == 0) | |
3258 | mult = 1; | |
3259 | bytes = mult * exp.X_add_number; | |
3260 | for (i = 0; i < exp.X_add_number; i++) | |
3261 | emit_expr (&val, mult); | |
3262 | } | |
3263 | } | |
3264 | else | |
3265 | { | |
9497f5ac NC |
3266 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3267 | resolve_expression (&exp); | |
3268 | ||
252b5132 RH |
3269 | if (exp.X_op == O_constant) |
3270 | { | |
a4a151e6 | 3271 | offsetT repeat; |
252b5132 RH |
3272 | |
3273 | repeat = exp.X_add_number; | |
3274 | if (mult) | |
3275 | repeat *= mult; | |
3276 | bytes = repeat; | |
3277 | if (repeat <= 0) | |
3278 | { | |
2d150871 RO |
3279 | if (!flag_mri) |
3280 | as_warn (_(".space repeat count is zero, ignored")); | |
3281 | else if (repeat < 0) | |
252b5132 RH |
3282 | as_warn (_(".space repeat count is negative, ignored")); |
3283 | goto getout; | |
3284 | } | |
3285 | ||
3286 | /* If we are in the absolute section, just bump the offset. */ | |
3287 | if (now_seg == absolute_section) | |
3288 | { | |
3289 | abs_section_offset += repeat; | |
3290 | goto getout; | |
3291 | } | |
3292 | ||
3293 | /* If we are secretly in an MRI common section, then | |
3294 | creating space just increases the size of the common | |
3295 | symbol. */ | |
3296 | if (mri_common_symbol != NULL) | |
3297 | { | |
3298 | S_SET_VALUE (mri_common_symbol, | |
3299 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3300 | goto getout; | |
3301 | } | |
3302 | ||
3303 | if (!need_pass_2) | |
3304 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3305 | (offsetT) repeat, (char *) 0); | |
3306 | } | |
3307 | else | |
3308 | { | |
3309 | if (now_seg == absolute_section) | |
3310 | { | |
3311 | as_bad (_("space allocation too complex in absolute section")); | |
3312 | subseg_set (text_section, 0); | |
3313 | } | |
f0e652b4 | 3314 | |
252b5132 RH |
3315 | if (mri_common_symbol != NULL) |
3316 | { | |
3317 | as_bad (_("space allocation too complex in common section")); | |
3318 | mri_common_symbol = NULL; | |
3319 | } | |
f0e652b4 | 3320 | |
252b5132 RH |
3321 | if (!need_pass_2) |
3322 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3323 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3324 | } | |
3325 | ||
3326 | if (p) | |
3327 | *p = val.X_add_number; | |
3328 | } | |
3329 | ||
3330 | getout: | |
3331 | ||
3332 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3333 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3334 | or dcb.b. */ | |
3335 | if (flag_mri && (bytes & 1) != 0) | |
3336 | mri_pending_align = 1; | |
3337 | ||
3338 | demand_empty_rest_of_line (); | |
3339 | ||
3340 | if (flag_mri) | |
3341 | mri_comment_end (stop, stopc); | |
3342 | } | |
3343 | ||
3344 | /* This is like s_space, but the value is a floating point number with | |
3345 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3346 | friends. */ | |
3347 | ||
3348 | void | |
39e6acbd | 3349 | s_float_space (int float_type) |
252b5132 RH |
3350 | { |
3351 | offsetT count; | |
3352 | int flen; | |
3353 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3354 | char *stop = NULL; | |
fb25138b | 3355 | char stopc = 0; |
252b5132 | 3356 | |
cc3f603a JM |
3357 | #ifdef md_cons_align |
3358 | md_cons_align (1); | |
3359 | #endif | |
3360 | ||
252b5132 RH |
3361 | if (flag_mri) |
3362 | stop = mri_comment_field (&stopc); | |
3363 | ||
3364 | count = get_absolute_expression (); | |
3365 | ||
3366 | SKIP_WHITESPACE (); | |
3367 | if (*input_line_pointer != ',') | |
3368 | { | |
3369 | as_bad (_("missing value")); | |
3370 | ignore_rest_of_line (); | |
3371 | if (flag_mri) | |
3372 | mri_comment_end (stop, stopc); | |
3373 | return; | |
3374 | } | |
3375 | ||
3376 | ++input_line_pointer; | |
3377 | ||
3378 | SKIP_WHITESPACE (); | |
3379 | ||
3380 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3381 | * letter is legal. */ | |
3382 | if (input_line_pointer[0] == '0' | |
3882b010 | 3383 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3384 | input_line_pointer += 2; |
3385 | ||
3386 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3387 | with the exact digits specified. */ | |
3388 | if (input_line_pointer[0] == ':') | |
3389 | { | |
3390 | flen = hex_float (float_type, temp); | |
3391 | if (flen < 0) | |
3392 | { | |
3393 | ignore_rest_of_line (); | |
3394 | if (flag_mri) | |
3395 | mri_comment_end (stop, stopc); | |
3396 | return; | |
3397 | } | |
3398 | } | |
3399 | else | |
3400 | { | |
3401 | char *err; | |
3402 | ||
3403 | err = md_atof (float_type, temp, &flen); | |
3404 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3405 | know (err != NULL || flen > 0); |
252b5132 RH |
3406 | if (err) |
3407 | { | |
0e389e77 | 3408 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3409 | ignore_rest_of_line (); |
3410 | if (flag_mri) | |
3411 | mri_comment_end (stop, stopc); | |
3412 | return; | |
3413 | } | |
3414 | } | |
3415 | ||
3416 | while (--count >= 0) | |
3417 | { | |
3418 | char *p; | |
3419 | ||
3420 | p = frag_more (flen); | |
3421 | memcpy (p, temp, (unsigned int) flen); | |
3422 | } | |
3423 | ||
3424 | demand_empty_rest_of_line (); | |
3425 | ||
3426 | if (flag_mri) | |
3427 | mri_comment_end (stop, stopc); | |
3428 | } | |
3429 | ||
3430 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3431 | ||
3432 | void | |
39e6acbd | 3433 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3434 | { |
3435 | char *stop = NULL; | |
fb25138b | 3436 | char stopc = 0; |
252b5132 RH |
3437 | |
3438 | if (flag_mri) | |
3439 | stop = mri_comment_field (&stopc); | |
3440 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3441 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3442 | /* The ELF backend needs to know that we are changing sections, so | |
3443 | that .previous works correctly. */ | |
f43abd2b | 3444 | if (IS_ELF) |
a2902af6 TS |
3445 | obj_elf_section_change_hook (); |
3446 | #endif | |
252b5132 RH |
3447 | subseg_set (absolute_section, 0); |
3448 | demand_empty_rest_of_line (); | |
3449 | if (flag_mri) | |
3450 | mri_comment_end (stop, stopc); | |
3451 | } | |
3452 | ||
3453 | void | |
39e6acbd | 3454 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3455 | { |
3456 | register int temp; | |
3457 | ||
3458 | temp = get_absolute_expression (); | |
3459 | subseg_set (text_section, (subsegT) temp); | |
3460 | demand_empty_rest_of_line (); | |
3461 | #ifdef OBJ_VMS | |
3462 | const_flag &= ~IN_DEFAULT_SECTION; | |
3463 | #endif | |
041ff4dd | 3464 | } |
06e77878 AO |
3465 | |
3466 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3467 | referenced directly, will cause y to become a weak symbol. */ | |
3468 | void | |
3469 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3470 | { | |
3471 | char *name; | |
3472 | char delim; | |
3473 | char *end_name; | |
3474 | symbolS *symbolP; | |
3475 | symbolS *symbolP2; | |
3476 | expressionS exp; | |
3477 | ||
3478 | name = input_line_pointer; | |
3479 | delim = get_symbol_end (); | |
3480 | end_name = input_line_pointer; | |
3481 | ||
3482 | if (name == end_name) | |
3483 | { | |
3484 | as_bad (_("expected symbol name")); | |
3485 | *end_name = delim; | |
3486 | ignore_rest_of_line (); | |
3487 | return; | |
3488 | } | |
3489 | ||
3490 | symbolP = symbol_find_or_make (name); | |
3491 | ||
b54788f8 AO |
3492 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3493 | { | |
89cdfe57 | 3494 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3495 | { |
3496 | as_bad (_("symbol `%s' is already defined"), name); | |
3497 | *end_name = delim; | |
3498 | ignore_rest_of_line (); | |
3499 | return; | |
3500 | } | |
89cdfe57 | 3501 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3502 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3503 | } |
3504 | ||
06e77878 AO |
3505 | *end_name = delim; |
3506 | ||
3507 | SKIP_WHITESPACE (); | |
3508 | ||
3509 | if (*input_line_pointer != ',') | |
3510 | { | |
3511 | *end_name = 0; | |
3512 | as_bad (_("expected comma after \"%s\""), name); | |
3513 | *end_name = delim; | |
3514 | ignore_rest_of_line (); | |
3515 | return; | |
3516 | } | |
3517 | ||
3518 | input_line_pointer++; | |
3519 | ||
3520 | SKIP_WHITESPACE (); | |
3521 | ||
3522 | name = input_line_pointer; | |
3523 | delim = get_symbol_end (); | |
3524 | end_name = input_line_pointer; | |
3525 | ||
3526 | if (name == end_name) | |
3527 | { | |
3528 | as_bad (_("expected symbol name")); | |
3529 | ignore_rest_of_line (); | |
3530 | return; | |
3531 | } | |
3532 | ||
3533 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3534 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3535 | { | |
3536 | symbolP2 = symbol_find_or_make (name); | |
3537 | S_SET_WEAKREFD (symbolP2); | |
3538 | } | |
3539 | else | |
3540 | { | |
3541 | symbolS *symp = symbolP2; | |
3542 | ||
3543 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3544 | { | |
3545 | expressionS *expP = symbol_get_value_expression (symp); | |
3546 | ||
9c2799c2 | 3547 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3548 | && expP->X_add_number == 0); |
3549 | symp = expP->X_add_symbol; | |
3550 | } | |
3551 | if (symp == symbolP) | |
3552 | { | |
3553 | char *loop; | |
3554 | ||
3555 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3556 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3557 | |
3558 | symp = symbolP2; | |
3559 | while (symp != symbolP) | |
3560 | { | |
3561 | char *old_loop = loop; | |
3562 | symp = symbol_get_value_expression (symp)->X_add_symbol; | |
1bf57e9f AM |
3563 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3564 | (const char *) NULL); | |
06e77878 AO |
3565 | free (old_loop); |
3566 | } | |
3567 | ||
3568 | as_bad (_("%s: would close weakref loop: %s"), | |
3569 | S_GET_NAME (symbolP), loop); | |
3570 | ||
3571 | free (loop); | |
3572 | ||
3573 | *end_name = delim; | |
3574 | ignore_rest_of_line (); | |
3575 | return; | |
3576 | } | |
3577 | ||
3578 | /* Short-circuiting instead of just checking here might speed | |
3579 | things up a tiny little bit, but loop error messages would | |
3580 | miss intermediate links. */ | |
3581 | /* symbolP2 = symp; */ | |
3582 | } | |
3583 | ||
3584 | *end_name = delim; | |
3585 | ||
3586 | memset (&exp, 0, sizeof (exp)); | |
3587 | exp.X_op = O_symbol; | |
3588 | exp.X_add_symbol = symbolP2; | |
3589 | ||
3590 | S_SET_SEGMENT (symbolP, undefined_section); | |
3591 | symbol_set_value_expression (symbolP, &exp); | |
3592 | symbol_set_frag (symbolP, &zero_address_frag); | |
3593 | S_SET_WEAKREFR (symbolP); | |
3594 | ||
3595 | demand_empty_rest_of_line (); | |
3596 | } | |
252b5132 | 3597 | \f |
c95b35a9 NS |
3598 | |
3599 | /* Verify that we are at the end of a line. If not, issue an error and | |
3600 | skip to EOL. */ | |
3601 | ||
041ff4dd | 3602 | void |
39e6acbd | 3603 | demand_empty_rest_of_line (void) |
252b5132 RH |
3604 | { |
3605 | SKIP_WHITESPACE (); | |
3606 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3607 | input_line_pointer++; |
252b5132 | 3608 | else |
252b5132 | 3609 | { |
3882b010 | 3610 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3611 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3612 | *input_line_pointer); |
252b5132 | 3613 | else |
c95b35a9 | 3614 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3615 | *input_line_pointer); |
c95b35a9 | 3616 | ignore_rest_of_line (); |
252b5132 | 3617 | } |
c95b35a9 NS |
3618 | |
3619 | /* Return pointing just after end-of-line. */ | |
3620 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3621 | } | |
3622 | ||
3623 | /* Silently advance to the end of line. Use this after already having | |
3624 | issued an error about something bad. */ | |
3625 | ||
3626 | void | |
3627 | ignore_rest_of_line (void) | |
3628 | { | |
3629 | while (input_line_pointer < buffer_limit | |
3630 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3631 | input_line_pointer++; | |
f0e652b4 | 3632 | |
041ff4dd NC |
3633 | input_line_pointer++; |
3634 | ||
3635 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3636 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3637 | } | |
3638 | ||
be95a9c1 AM |
3639 | /* Sets frag for given symbol to zero_address_frag, except when the |
3640 | symbol frag is already set to a dummy listing frag. */ | |
3641 | ||
3642 | static void | |
3643 | set_zero_frag (symbolS *symbolP) | |
3644 | { | |
3645 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3646 | symbol_set_frag (symbolP, &zero_address_frag); | |
3647 | } | |
3648 | ||
041ff4dd | 3649 | /* In: Pointer to a symbol. |
d6415f6c | 3650 | Input_line_pointer->expression. |
f0e652b4 | 3651 | |
041ff4dd | 3652 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3653 | Tried to set symbol to value of expression. |
3654 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3655 | |
252b5132 | 3656 | void |
39e6acbd | 3657 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3658 | { |
3659 | expressionS exp; | |
be95a9c1 | 3660 | segT seg; |
252b5132 | 3661 | |
041ff4dd | 3662 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3663 | |
9497f5ac NC |
3664 | if (!S_IS_FORWARD_REF (symbolP)) |
3665 | (void) expression (&exp); | |
3666 | else | |
3667 | (void) deferred_expression (&exp); | |
252b5132 RH |
3668 | |
3669 | if (exp.X_op == O_illegal) | |
0e389e77 | 3670 | as_bad (_("illegal expression")); |
252b5132 | 3671 | else if (exp.X_op == O_absent) |
0e389e77 | 3672 | as_bad (_("missing expression")); |
252b5132 RH |
3673 | else if (exp.X_op == O_big) |
3674 | { | |
3675 | if (exp.X_add_number > 0) | |
0e389e77 | 3676 | as_bad (_("bignum invalid")); |
252b5132 | 3677 | else |
0e389e77 | 3678 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3679 | } |
3680 | else if (exp.X_op == O_subtract | |
9497f5ac | 3681 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3682 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3683 | && (symbol_get_frag (exp.X_add_symbol) |
3684 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3685 | { |
3686 | exp.X_op = O_constant; | |
3687 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3688 | - S_GET_VALUE (exp.X_op_symbol)); | |
3689 | } | |
3690 | ||
be95a9c1 AM |
3691 | if (symbol_section_p (symbolP)) |
3692 | { | |
3693 | as_bad ("attempt to set value of section symbol"); | |
3694 | return; | |
3695 | } | |
be95a9c1 | 3696 | |
252b5132 RH |
3697 | switch (exp.X_op) |
3698 | { | |
3699 | case O_illegal: | |
3700 | case O_absent: | |
3701 | case O_big: | |
3702 | exp.X_add_number = 0; | |
3703 | /* Fall through. */ | |
3704 | case O_constant: | |
3705 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3706 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3707 | set_zero_frag (symbolP); |
252b5132 RH |
3708 | break; |
3709 | ||
3710 | case O_register: | |
97c4f2d9 | 3711 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3712 | if (S_IS_EXTERNAL (symbolP)) |
3713 | { | |
3714 | as_bad ("can't equate global symbol `%s' with register name", | |
3715 | S_GET_NAME (symbolP)); | |
3716 | return; | |
3717 | } | |
97c4f2d9 | 3718 | #endif |
252b5132 RH |
3719 | S_SET_SEGMENT (symbolP, reg_section); |
3720 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3721 | set_zero_frag (symbolP); |
db557034 | 3722 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3723 | break; |
3724 | ||
3725 | case O_symbol: | |
be95a9c1 AM |
3726 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3727 | /* For x=undef+const, create an expression symbol. | |
3728 | For x=x+const, just update x except when x is an undefined symbol | |
3729 | For x=defined+const, evaluate x. */ | |
3730 | if (symbolP == exp.X_add_symbol | |
3731 | && (seg != undefined_section | |
3732 | || !symbol_constant_p (symbolP))) | |
3733 | { | |
3734 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3735 | break; | |
3736 | } | |
9497f5ac | 3737 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3738 | { |
3739 | symbolS *s = exp.X_add_symbol; | |
3740 | ||
60938e80 L |
3741 | if (S_IS_COMMON (s)) |
3742 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3743 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3744 | ||
be95a9c1 AM |
3745 | S_SET_SEGMENT (symbolP, seg); |
3746 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3747 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3748 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3749 | break; |
252b5132 | 3750 | } |
66bd02d3 AM |
3751 | S_SET_SEGMENT (symbolP, undefined_section); |
3752 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 3753 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
3754 | set_zero_frag (symbolP); |
3755 | break; | |
252b5132 RH |
3756 | |
3757 | default: | |
aba4aa7d AM |
3758 | /* The value is some complex expression. */ |
3759 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3760 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3761 | set_zero_frag (symbolP); |
252b5132 RH |
3762 | break; |
3763 | } | |
3764 | } | |
3765 | \f | |
d6415f6c | 3766 | /* cons() |
f0e652b4 | 3767 | |
041ff4dd NC |
3768 | CONStruct more frag of .bytes, or .words etc. |
3769 | Should need_pass_2 be 1 then emit no frag(s). | |
3770 | This understands EXPRESSIONS. | |
f0e652b4 | 3771 | |
041ff4dd | 3772 | Bug (?) |
f0e652b4 | 3773 | |
041ff4dd NC |
3774 | This has a split personality. We use expression() to read the |
3775 | value. We can detect if the value won't fit in a byte or word. | |
3776 | But we can't detect if expression() discarded significant digits | |
3777 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3778 | |
3779 | /* Select a parser for cons expressions. */ | |
3780 | ||
3781 | /* Some targets need to parse the expression in various fancy ways. | |
3782 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3783 | (for example, the HPPA does this). Otherwise, you can define | |
3784 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3785 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3786 | are defined, which is the normal case, then only simple expressions | |
3787 | are permitted. */ | |
3788 | ||
abd63a32 | 3789 | #ifdef TC_M68K |
252b5132 | 3790 | static void |
39e6acbd | 3791 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3792 | #endif |
252b5132 RH |
3793 | |
3794 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3795 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3796 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3797 | static void |
39e6acbd | 3798 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3799 | #endif |
3800 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3801 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3802 | static void | |
39e6acbd | 3803 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3804 | #endif |
3805 | ||
3806 | /* If we haven't gotten one yet, just call expression. */ | |
3807 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3808 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3809 | #endif | |
3810 | #endif | |
3811 | ||
cdfbf930 | 3812 | void |
b41b1f95 L |
3813 | do_parse_cons_expression (expressionS *exp, |
3814 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3815 | { |
3816 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3817 | } | |
3818 | ||
3819 | ||
041ff4dd NC |
3820 | /* Worker to do .byte etc statements. |
3821 | Clobbers input_line_pointer and checks end-of-line. */ | |
3822 | ||
3823 | static void | |
39e6acbd KH |
3824 | cons_worker (register int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
3825 | int rva) | |
252b5132 RH |
3826 | { |
3827 | int c; | |
3828 | expressionS exp; | |
3829 | char *stop = NULL; | |
fb25138b | 3830 | char stopc = 0; |
252b5132 RH |
3831 | |
3832 | #ifdef md_flush_pending_output | |
3833 | md_flush_pending_output (); | |
3834 | #endif | |
3835 | ||
3836 | if (flag_mri) | |
3837 | stop = mri_comment_field (&stopc); | |
3838 | ||
3839 | if (is_it_end_of_statement ()) | |
3840 | { | |
3841 | demand_empty_rest_of_line (); | |
3842 | if (flag_mri) | |
3843 | mri_comment_end (stop, stopc); | |
3844 | return; | |
3845 | } | |
3846 | ||
cc1bc22a AM |
3847 | #ifdef TC_ADDRESS_BYTES |
3848 | if (nbytes == 0) | |
3849 | nbytes = TC_ADDRESS_BYTES (); | |
3850 | #endif | |
3851 | ||
252b5132 RH |
3852 | #ifdef md_cons_align |
3853 | md_cons_align (nbytes); | |
3854 | #endif | |
3855 | ||
3856 | c = 0; | |
3857 | do | |
3858 | { | |
abd63a32 | 3859 | #ifdef TC_M68K |
252b5132 RH |
3860 | if (flag_m68k_mri) |
3861 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3862 | else | |
abd63a32 | 3863 | #endif |
252b5132 RH |
3864 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
3865 | ||
3866 | if (rva) | |
3867 | { | |
3868 | if (exp.X_op == O_symbol) | |
3869 | exp.X_op = O_symbol_rva; | |
3870 | else | |
3871 | as_fatal (_("rva without symbol")); | |
3872 | } | |
3873 | emit_expr (&exp, (unsigned int) nbytes); | |
3874 | ++c; | |
3875 | } | |
3876 | while (*input_line_pointer++ == ','); | |
3877 | ||
3878 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3879 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3880 | or dcb.b. */ | |
3881 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3882 | mri_pending_align = 1; | |
3883 | ||
041ff4dd | 3884 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3885 | |
3886 | demand_empty_rest_of_line (); | |
3887 | ||
3888 | if (flag_mri) | |
3889 | mri_comment_end (stop, stopc); | |
3890 | } | |
3891 | ||
252b5132 | 3892 | void |
39e6acbd | 3893 | cons (int size) |
252b5132 RH |
3894 | { |
3895 | cons_worker (size, 0); | |
3896 | } | |
3897 | ||
041ff4dd | 3898 | void |
39e6acbd | 3899 | s_rva (int size) |
252b5132 RH |
3900 | { |
3901 | cons_worker (size, 1); | |
3902 | } | |
3903 | ||
05e9452c AM |
3904 | /* .reloc offset, reloc_name, symbol+addend. */ |
3905 | ||
3906 | void | |
3907 | s_reloc (int ignore ATTRIBUTE_UNUSED) | |
3908 | { | |
3909 | char *stop = NULL; | |
3910 | char stopc = 0; | |
3911 | expressionS exp; | |
3912 | char *r_name; | |
3913 | int c; | |
3914 | struct reloc_list *reloc; | |
3915 | ||
1e9cc1c2 | 3916 | reloc = (struct reloc_list *) xmalloc (sizeof (*reloc)); |
05e9452c AM |
3917 | |
3918 | if (flag_mri) | |
3919 | stop = mri_comment_field (&stopc); | |
3920 | ||
3921 | expression (&exp); | |
3922 | switch (exp.X_op) | |
3923 | { | |
3924 | case O_illegal: | |
3925 | case O_absent: | |
3926 | case O_big: | |
3927 | case O_register: | |
3928 | as_bad (_("missing or bad offset expression")); | |
3929 | goto err_out; | |
3930 | case O_constant: | |
3931 | exp.X_add_symbol = section_symbol (now_seg); | |
3932 | exp.X_op = O_symbol; | |
3933 | /* Fall thru */ | |
3934 | case O_symbol: | |
3935 | if (exp.X_add_number == 0) | |
3936 | { | |
3937 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
3938 | break; | |
3939 | } | |
3940 | /* Fall thru */ | |
3941 | default: | |
3942 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
3943 | break; | |
3944 | } | |
3945 | ||
3946 | SKIP_WHITESPACE (); | |
3947 | if (*input_line_pointer != ',') | |
3948 | { | |
3949 | as_bad (_("missing reloc type")); | |
3950 | goto err_out; | |
3951 | } | |
3952 | ||
3953 | ++input_line_pointer; | |
3954 | SKIP_WHITESPACE (); | |
3955 | r_name = input_line_pointer; | |
3956 | c = get_symbol_end (); | |
3957 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
3958 | *input_line_pointer = c; | |
3959 | if (reloc->u.a.howto == NULL) | |
3960 | { | |
3961 | as_bad (_("unrecognized reloc type")); | |
3962 | goto err_out; | |
3963 | } | |
3964 | ||
3965 | exp.X_op = O_absent; | |
3966 | SKIP_WHITESPACE (); | |
3967 | if (*input_line_pointer == ',') | |
3968 | { | |
3969 | ++input_line_pointer; | |
c188d0bb | 3970 | expression (&exp); |
05e9452c AM |
3971 | } |
3972 | switch (exp.X_op) | |
3973 | { | |
3974 | case O_illegal: | |
3975 | case O_big: | |
3976 | case O_register: | |
3977 | as_bad (_("bad reloc expression")); | |
3978 | err_out: | |
3979 | ignore_rest_of_line (); | |
3980 | free (reloc); | |
3981 | if (flag_mri) | |
3982 | mri_comment_end (stop, stopc); | |
3983 | return; | |
3984 | case O_absent: | |
3985 | reloc->u.a.sym = NULL; | |
3986 | reloc->u.a.addend = 0; | |
3987 | break; | |
3988 | case O_constant: | |
3989 | reloc->u.a.sym = NULL; | |
3990 | reloc->u.a.addend = exp.X_add_number; | |
3991 | break; | |
3992 | case O_symbol: | |
3993 | reloc->u.a.sym = exp.X_add_symbol; | |
3994 | reloc->u.a.addend = exp.X_add_number; | |
3995 | break; | |
3996 | default: | |
3997 | reloc->u.a.sym = make_expr_symbol (&exp); | |
3998 | reloc->u.a.addend = 0; | |
3999 | break; | |
4000 | } | |
4001 | ||
4002 | as_where (&reloc->file, &reloc->line); | |
4003 | reloc->next = reloc_list; | |
4004 | reloc_list = reloc; | |
4005 | ||
4006 | demand_empty_rest_of_line (); | |
4007 | if (flag_mri) | |
4008 | mri_comment_end (stop, stopc); | |
4009 | } | |
4010 | ||
252b5132 RH |
4011 | /* Put the contents of expression EXP into the object file using |
4012 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4013 | ||
4014 | void | |
39e6acbd | 4015 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4016 | { |
4017 | operatorT op; | |
4018 | register char *p; | |
4019 | valueT extra_digit = 0; | |
4020 | ||
4021 | /* Don't do anything if we are going to make another pass. */ | |
4022 | if (need_pass_2) | |
4023 | return; | |
4024 | ||
4bc25101 NC |
4025 | /* Grow the current frag now so that dot_value does not get invalidated |
4026 | if the frag were to fill up in the frag_more() call below. */ | |
4027 | frag_grow (nbytes); | |
ed7d5d1a AM |
4028 | dot_value = frag_now_fix (); |
4029 | ||
252b5132 RH |
4030 | #ifndef NO_LISTING |
4031 | #ifdef OBJ_ELF | |
4032 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4033 | appear as a four byte positive constant in the .line section, | |
4034 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4035 | { | |
4036 | static int dwarf_line = -1; | |
4037 | ||
4038 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4039 | dwarf_line = -1; | |
4040 | else if (dwarf_line >= 0 | |
4041 | && nbytes == 2 | |
4042 | && exp->X_op == O_constant | |
4043 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4044 | listing_source_line ((unsigned int) dwarf_line); | |
4045 | else if (nbytes == 4 | |
4046 | && exp->X_op == O_constant | |
4047 | && exp->X_add_number >= 0) | |
4048 | dwarf_line = exp->X_add_number; | |
4049 | else | |
4050 | dwarf_line = -1; | |
4051 | } | |
4052 | ||
4053 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4054 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4055 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4056 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4057 | file. We look for that case here. */ | |
4058 | { | |
4059 | static int dwarf_file = 0; | |
4060 | ||
4061 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4062 | dwarf_file = 0; | |
4063 | else if (dwarf_file == 0 | |
4064 | && nbytes == 2 | |
4065 | && exp->X_op == O_constant | |
4066 | && exp->X_add_number == 0x11) | |
4067 | dwarf_file = 1; | |
4068 | else if (dwarf_file == 1 | |
4069 | && nbytes == 2 | |
4070 | && exp->X_op == O_constant | |
4071 | && exp->X_add_number == 0x12) | |
4072 | dwarf_file = 2; | |
4073 | else if (dwarf_file == 2 | |
4074 | && nbytes == 4) | |
4075 | dwarf_file = 3; | |
4076 | else if (dwarf_file == 3 | |
4077 | && nbytes == 2 | |
4078 | && exp->X_op == O_constant | |
4079 | && exp->X_add_number == 0x38) | |
4080 | dwarf_file = 4; | |
4081 | else | |
4082 | dwarf_file = 0; | |
4083 | ||
4084 | /* The variable dwarf_file_string tells stringer that the string | |
4085 | may be the name of the source file. */ | |
4086 | if (dwarf_file == 4) | |
4087 | dwarf_file_string = 1; | |
4088 | else | |
4089 | dwarf_file_string = 0; | |
4090 | } | |
4091 | #endif | |
4092 | #endif | |
4093 | ||
4094 | if (check_eh_frame (exp, &nbytes)) | |
4095 | return; | |
4096 | ||
4097 | op = exp->X_op; | |
4098 | ||
4099 | /* Allow `.word 0' in the absolute section. */ | |
4100 | if (now_seg == absolute_section) | |
4101 | { | |
4102 | if (op != O_constant || exp->X_add_number != 0) | |
4103 | as_bad (_("attempt to store value in absolute section")); | |
4104 | abs_section_offset += nbytes; | |
4105 | return; | |
4106 | } | |
4107 | ||
4108 | /* Handle a negative bignum. */ | |
4109 | if (op == O_uminus | |
4110 | && exp->X_add_number == 0 | |
2b47531b ILT |
4111 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4112 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4113 | { |
4114 | int i; | |
4115 | unsigned long carry; | |
4116 | ||
2b47531b | 4117 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4118 | |
4119 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4120 | carry = 1; | |
4121 | for (i = 0; i < exp->X_add_number; i++) | |
4122 | { | |
4123 | unsigned long next; | |
4124 | ||
041ff4dd | 4125 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4126 | & LITTLENUM_MASK) |
4127 | + carry); | |
4128 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4129 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4130 | } | |
4131 | ||
4132 | /* We can ignore any carry out, because it will be handled by | |
4133 | extra_digit if it is needed. */ | |
4134 | ||
4135 | extra_digit = (valueT) -1; | |
4136 | op = O_big; | |
4137 | } | |
4138 | ||
4139 | if (op == O_absent || op == O_illegal) | |
4140 | { | |
4141 | as_warn (_("zero assumed for missing expression")); | |
4142 | exp->X_add_number = 0; | |
4143 | op = O_constant; | |
4144 | } | |
4145 | else if (op == O_big && exp->X_add_number <= 0) | |
4146 | { | |
0e389e77 | 4147 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4148 | exp->X_add_number = 0; |
4149 | op = O_constant; | |
4150 | } | |
4151 | else if (op == O_register) | |
4152 | { | |
4153 | as_warn (_("register value used as expression")); | |
4154 | op = O_constant; | |
4155 | } | |
4156 | ||
4157 | p = frag_more ((int) nbytes); | |
4158 | ||
4159 | #ifndef WORKING_DOT_WORD | |
4160 | /* If we have the difference of two symbols in a word, save it on | |
4161 | the broken_words list. See the code in write.c. */ | |
4162 | if (op == O_subtract && nbytes == 2) | |
4163 | { | |
4164 | struct broken_word *x; | |
4165 | ||
4166 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
4167 | x->next_broken_word = broken_words; | |
4168 | broken_words = x; | |
4169 | x->seg = now_seg; | |
4170 | x->subseg = now_subseg; | |
4171 | x->frag = frag_now; | |
4172 | x->word_goes_here = p; | |
4173 | x->dispfrag = 0; | |
4174 | x->add = exp->X_add_symbol; | |
4175 | x->sub = exp->X_op_symbol; | |
4176 | x->addnum = exp->X_add_number; | |
4177 | x->added = 0; | |
dc59a897 | 4178 | x->use_jump = 0; |
252b5132 RH |
4179 | new_broken_words++; |
4180 | return; | |
4181 | } | |
4182 | #endif | |
4183 | ||
4184 | /* If we have an integer, but the number of bytes is too large to | |
4185 | pass to md_number_to_chars, handle it as a bignum. */ | |
4186 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4187 | { | |
e5604d79 RS |
4188 | extra_digit = exp->X_unsigned ? 0 : -1; |
4189 | convert_to_bignum (exp); | |
4190 | op = O_big; | |
252b5132 RH |
4191 | } |
4192 | ||
4193 | if (op == O_constant) | |
4194 | { | |
4195 | register valueT get; | |
4196 | register valueT use; | |
4197 | register valueT mask; | |
4198 | valueT hibit; | |
4199 | register valueT unmask; | |
4200 | ||
4201 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4202 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4203 | if (nbytes >= sizeof (valueT)) |
4204 | { | |
4205 | mask = 0; | |
4206 | if (nbytes > sizeof (valueT)) | |
4207 | hibit = 0; | |
4208 | else | |
4209 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4210 | } | |
4211 | else | |
4212 | { | |
041ff4dd | 4213 | /* Don't store these bits. */ |
252b5132 RH |
4214 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4215 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4216 | } | |
4217 | ||
041ff4dd | 4218 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4219 | |
4220 | #ifdef NEVER | |
4221 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4222 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4223 | #endif |
4224 | ||
4225 | get = exp->X_add_number; | |
4226 | use = get & unmask; | |
4227 | if ((get & mask) != 0 | |
4228 | && ((get & mask) != mask | |
4229 | || (get & hibit) == 0)) | |
041ff4dd | 4230 | { /* Leading bits contain both 0s & 1s. */ |
b6ac5419 | 4231 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4232 | #ifndef __MSVCRT__ |
5c612369 NC |
4233 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4234 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4235 | #else |
4236 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4237 | (unsigned long long) get, (unsigned long long) use); | |
4238 | #endif | |
b6ac5419 AM |
4239 | #else |
4240 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4241 | (unsigned long) get, (unsigned long) use); | |
4242 | #endif | |
252b5132 | 4243 | } |
041ff4dd | 4244 | /* Put bytes in right order. */ |
252b5132 RH |
4245 | md_number_to_chars (p, use, (int) nbytes); |
4246 | } | |
4247 | else if (op == O_big) | |
4248 | { | |
4249 | unsigned int size; | |
4250 | LITTLENUM_TYPE *nums; | |
4251 | ||
4252 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4253 | ||
4254 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
4255 | if (nbytes < size) | |
4256 | { | |
0e389e77 | 4257 | as_warn (_("bignum truncated to %d bytes"), nbytes); |
252b5132 RH |
4258 | size = nbytes; |
4259 | } | |
4260 | ||
4261 | if (target_big_endian) | |
4262 | { | |
4263 | while (nbytes > size) | |
4264 | { | |
4265 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4266 | nbytes -= CHARS_PER_LITTLENUM; | |
4267 | p += CHARS_PER_LITTLENUM; | |
4268 | } | |
4269 | ||
4270 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4271 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4272 | { |
4273 | --nums; | |
4274 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4275 | size -= CHARS_PER_LITTLENUM; | |
4276 | p += CHARS_PER_LITTLENUM; | |
4277 | } | |
4278 | } | |
4279 | else | |
4280 | { | |
4281 | nums = generic_bignum; | |
ceac3f62 | 4282 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4283 | { |
4284 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4285 | ++nums; | |
4286 | size -= CHARS_PER_LITTLENUM; | |
4287 | p += CHARS_PER_LITTLENUM; | |
4288 | nbytes -= CHARS_PER_LITTLENUM; | |
4289 | } | |
4290 | ||
ceac3f62 | 4291 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4292 | { |
4293 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4294 | nbytes -= CHARS_PER_LITTLENUM; | |
4295 | p += CHARS_PER_LITTLENUM; | |
4296 | } | |
4297 | } | |
4298 | } | |
4299 | else | |
7ddd14de BW |
4300 | emit_expr_fix (exp, nbytes, frag_now, p); |
4301 | } | |
4302 | ||
4303 | void | |
4304 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p) | |
4305 | { | |
4306 | memset (p, 0, nbytes); | |
252b5132 | 4307 | |
7ddd14de | 4308 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4309 | |
252b5132 | 4310 | #ifdef TC_CONS_FIX_NEW |
7ddd14de | 4311 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal, nbytes, exp); |
252b5132 | 4312 | #else |
7ddd14de BW |
4313 | { |
4314 | bfd_reloc_code_real_type r; | |
252b5132 | 4315 | |
7ddd14de BW |
4316 | switch (nbytes) |
4317 | { | |
4318 | case 1: | |
4319 | r = BFD_RELOC_8; | |
4320 | break; | |
4321 | case 2: | |
4322 | r = BFD_RELOC_16; | |
4323 | break; | |
d4f4f3fb AM |
4324 | case 3: |
4325 | r = BFD_RELOC_24; | |
4326 | break; | |
7ddd14de BW |
4327 | case 4: |
4328 | r = BFD_RELOC_32; | |
4329 | break; | |
4330 | case 8: | |
4331 | r = BFD_RELOC_64; | |
4332 | break; | |
4333 | default: | |
4334 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
4335 | r = BFD_RELOC_32; | |
4336 | break; | |
252b5132 | 4337 | } |
7ddd14de BW |
4338 | fix_new_exp (frag, p - frag->fr_literal, (int) nbytes, exp, |
4339 | 0, r); | |
4340 | } | |
252b5132 | 4341 | #endif |
252b5132 RH |
4342 | } |
4343 | \f | |
4344 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
4345 | ||
4346 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
4347 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
4348 | then pack them all together. We do a little better in that we allow | |
4349 | them in words, longs, etc. and we'll pack them in target byte order | |
4350 | for you. | |
4351 | ||
47eebc20 | 4352 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
4353 | entirely fit, put it in the next unit. Overflowing the bitfield is |
4354 | explicitly *not* even a warning. The bitwidth should be considered | |
4355 | a "mask". | |
4356 | ||
4357 | To use this function the tc-XXX.h file should define | |
4358 | BITFIELD_CONS_EXPRESSIONS. */ | |
4359 | ||
041ff4dd | 4360 | static void |
252b5132 RH |
4361 | parse_bitfield_cons (exp, nbytes) |
4362 | expressionS *exp; | |
4363 | unsigned int nbytes; | |
4364 | { | |
4365 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
4366 | char *hold = input_line_pointer; | |
4367 | ||
4368 | (void) expression (exp); | |
4369 | ||
4370 | if (*input_line_pointer == ':') | |
041ff4dd NC |
4371 | { |
4372 | /* Bitfields. */ | |
252b5132 RH |
4373 | long value = 0; |
4374 | ||
4375 | for (;;) | |
4376 | { | |
4377 | unsigned long width; | |
4378 | ||
4379 | if (*input_line_pointer != ':') | |
4380 | { | |
4381 | input_line_pointer = hold; | |
4382 | break; | |
041ff4dd | 4383 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
4384 | |
4385 | /* In the general case, we can't allow | |
4386 | full expressions with symbol | |
4387 | differences and such. The relocation | |
4388 | entries for symbols not defined in this | |
4389 | assembly would require arbitrary field | |
4390 | widths, positions, and masks which most | |
4391 | of our current object formats don't | |
4392 | support. | |
4393 | ||
4394 | In the specific case where a symbol | |
4395 | *is* defined in this assembly, we | |
4396 | *could* build fixups and track it, but | |
4397 | this could lead to confusion for the | |
4398 | backends. I'm lazy. I'll take any | |
4399 | SEG_ABSOLUTE. I think that means that | |
4400 | you can use a previous .set or | |
041ff4dd | 4401 | .equ type symbol. xoxorich. */ |
252b5132 RH |
4402 | |
4403 | if (exp->X_op == O_absent) | |
4404 | { | |
4405 | as_warn (_("using a bit field width of zero")); | |
4406 | exp->X_add_number = 0; | |
4407 | exp->X_op = O_constant; | |
041ff4dd | 4408 | } /* Implied zero width bitfield. */ |
252b5132 RH |
4409 | |
4410 | if (exp->X_op != O_constant) | |
4411 | { | |
4412 | *input_line_pointer = '\0'; | |
4413 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
4414 | *input_line_pointer = ':'; | |
4415 | demand_empty_rest_of_line (); | |
4416 | return; | |
041ff4dd | 4417 | } /* Too complex. */ |
252b5132 RH |
4418 | |
4419 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
4420 | { | |
4421 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
4422 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
4423 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 4424 | } /* Too big. */ |
252b5132 RH |
4425 | |
4426 | if (width > bits_available) | |
4427 | { | |
4428 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
4429 | input_line_pointer = hold; | |
4430 | exp->X_add_number = value; | |
4431 | break; | |
041ff4dd | 4432 | } /* Won't fit. */ |
252b5132 | 4433 | |
ef99799a KH |
4434 | /* Skip ':'. */ |
4435 | hold = ++input_line_pointer; | |
252b5132 RH |
4436 | |
4437 | (void) expression (exp); | |
4438 | if (exp->X_op != O_constant) | |
4439 | { | |
4440 | char cache = *input_line_pointer; | |
4441 | ||
4442 | *input_line_pointer = '\0'; | |
4443 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
4444 | *input_line_pointer = cache; | |
4445 | demand_empty_rest_of_line (); | |
4446 | return; | |
041ff4dd | 4447 | } /* Too complex. */ |
252b5132 RH |
4448 | |
4449 | value |= ((~(-1 << width) & exp->X_add_number) | |
4450 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
4451 | ||
4452 | if ((bits_available -= width) == 0 | |
4453 | || is_it_end_of_statement () | |
4454 | || *input_line_pointer != ',') | |
4455 | { | |
4456 | break; | |
041ff4dd | 4457 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4458 | |
4459 | hold = ++input_line_pointer; | |
4460 | (void) expression (exp); | |
041ff4dd | 4461 | } |
252b5132 RH |
4462 | |
4463 | exp->X_add_number = value; | |
4464 | exp->X_op = O_constant; | |
4465 | exp->X_unsigned = 1; | |
041ff4dd NC |
4466 | } |
4467 | } | |
252b5132 RH |
4468 | |
4469 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4470 | \f | |
4471 | /* Handle an MRI style string expression. */ | |
4472 | ||
abd63a32 | 4473 | #ifdef TC_M68K |
252b5132 RH |
4474 | static void |
4475 | parse_mri_cons (exp, nbytes) | |
4476 | expressionS *exp; | |
4477 | unsigned int nbytes; | |
4478 | { | |
4479 | if (*input_line_pointer != '\'' | |
4480 | && (input_line_pointer[1] != '\'' | |
4481 | || (*input_line_pointer != 'A' | |
4482 | && *input_line_pointer != 'E'))) | |
4483 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
4484 | else | |
4485 | { | |
4486 | unsigned int scan; | |
4487 | unsigned int result = 0; | |
4488 | ||
4489 | /* An MRI style string. Cut into as many bytes as will fit into | |
4490 | a nbyte chunk, left justify if necessary, and separate with | |
4491 | commas so we can try again later. */ | |
4492 | if (*input_line_pointer == 'A') | |
4493 | ++input_line_pointer; | |
4494 | else if (*input_line_pointer == 'E') | |
4495 | { | |
4496 | as_bad (_("EBCDIC constants are not supported")); | |
4497 | ++input_line_pointer; | |
4498 | } | |
4499 | ||
4500 | input_line_pointer++; | |
4501 | for (scan = 0; scan < nbytes; scan++) | |
4502 | { | |
4503 | if (*input_line_pointer == '\'') | |
4504 | { | |
4505 | if (input_line_pointer[1] == '\'') | |
4506 | { | |
4507 | input_line_pointer++; | |
4508 | } | |
4509 | else | |
4510 | break; | |
4511 | } | |
4512 | result = (result << 8) | (*input_line_pointer++); | |
4513 | } | |
4514 | ||
041ff4dd | 4515 | /* Left justify. */ |
252b5132 RH |
4516 | while (scan < nbytes) |
4517 | { | |
4518 | result <<= 8; | |
4519 | scan++; | |
4520 | } | |
f0e652b4 | 4521 | |
041ff4dd | 4522 | /* Create correct expression. */ |
252b5132 RH |
4523 | exp->X_op = O_constant; |
4524 | exp->X_add_number = result; | |
f0e652b4 | 4525 | |
041ff4dd | 4526 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4527 | if (input_line_pointer[0] != '\'' || |
4528 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4529 | { | |
4530 | input_line_pointer -= 2; | |
4531 | input_line_pointer[0] = ','; | |
4532 | input_line_pointer[1] = '\''; | |
4533 | } | |
4534 | else | |
4535 | input_line_pointer++; | |
4536 | } | |
4537 | } | |
abd63a32 | 4538 | #endif /* TC_M68K */ |
252b5132 RH |
4539 | \f |
4540 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4541 | ||
4542 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4543 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4544 | object file COUNT times. | |
4545 | ||
4546 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4547 | ||
4548 | static void | |
4549 | parse_repeat_cons (exp, nbytes) | |
4550 | expressionS *exp; | |
4551 | unsigned int nbytes; | |
4552 | { | |
4553 | expressionS count; | |
4554 | register int i; | |
4555 | ||
4556 | expression (exp); | |
4557 | ||
4558 | if (*input_line_pointer != ':') | |
4559 | { | |
4560 | /* No repeat count. */ | |
4561 | return; | |
4562 | } | |
4563 | ||
4564 | ++input_line_pointer; | |
4565 | expression (&count); | |
4566 | if (count.X_op != O_constant | |
4567 | || count.X_add_number <= 0) | |
4568 | { | |
0e389e77 | 4569 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4570 | return; |
4571 | } | |
4572 | ||
4573 | /* The cons function is going to output this expression once. So we | |
4574 | output it count - 1 times. */ | |
4575 | for (i = count.X_add_number - 1; i > 0; i--) | |
4576 | emit_expr (exp, nbytes); | |
4577 | } | |
4578 | ||
4579 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4580 | \f | |
4581 | /* Parse a floating point number represented as a hex constant. This | |
4582 | permits users to specify the exact bits they want in the floating | |
4583 | point number. */ | |
4584 | ||
4585 | static int | |
39e6acbd | 4586 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4587 | { |
4588 | int length; | |
4589 | int i; | |
4590 | ||
4591 | switch (float_type) | |
4592 | { | |
4593 | case 'f': | |
4594 | case 'F': | |
4595 | case 's': | |
4596 | case 'S': | |
4597 | length = 4; | |
4598 | break; | |
4599 | ||
4600 | case 'd': | |
4601 | case 'D': | |
4602 | case 'r': | |
4603 | case 'R': | |
4604 | length = 8; | |
4605 | break; | |
4606 | ||
4607 | case 'x': | |
4608 | case 'X': | |
4609 | length = 12; | |
4610 | break; | |
4611 | ||
4612 | case 'p': | |
4613 | case 'P': | |
4614 | length = 12; | |
4615 | break; | |
4616 | ||
4617 | default: | |
0e389e77 | 4618 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4619 | return -1; |
4620 | } | |
4621 | ||
4622 | /* It would be nice if we could go through expression to parse the | |
4623 | hex constant, but if we get a bignum it's a pain to sort it into | |
4624 | the buffer correctly. */ | |
4625 | i = 0; | |
4626 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4627 | { | |
4628 | int d; | |
4629 | ||
4630 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4631 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4632 | if (*input_line_pointer == '_') |
4633 | { | |
4634 | ++input_line_pointer; | |
4635 | continue; | |
4636 | } | |
4637 | ||
4638 | if (i >= length) | |
4639 | { | |
0e389e77 | 4640 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4641 | return -1; |
4642 | } | |
4643 | d = hex_value (*input_line_pointer) << 4; | |
4644 | ++input_line_pointer; | |
4645 | while (*input_line_pointer == '_') | |
4646 | ++input_line_pointer; | |
4647 | if (hex_p (*input_line_pointer)) | |
4648 | { | |
4649 | d += hex_value (*input_line_pointer); | |
4650 | ++input_line_pointer; | |
4651 | } | |
4652 | if (target_big_endian) | |
4653 | bytes[i] = d; | |
4654 | else | |
4655 | bytes[length - i - 1] = d; | |
4656 | ++i; | |
4657 | } | |
4658 | ||
4659 | if (i < length) | |
4660 | { | |
4661 | if (target_big_endian) | |
4662 | memset (bytes + i, 0, length - i); | |
4663 | else | |
4664 | memset (bytes, 0, length - i); | |
4665 | } | |
4666 | ||
4667 | return length; | |
4668 | } | |
4669 | ||
d6415f6c | 4670 | /* float_cons() |
f0e652b4 | 4671 | |
041ff4dd NC |
4672 | CONStruct some more frag chars of .floats .ffloats etc. |
4673 | Makes 0 or more new frags. | |
4674 | If need_pass_2 == 1, no frags are emitted. | |
4675 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4676 | |
041ff4dd NC |
4677 | A floating constant is defined by atof_generic(), except it is preceded |
4678 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4679 | reading, I decided to be incompatible. This always tries to give you | |
4680 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4681 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4682 | a choice of 2 flavours of noise according to which of 2 floating-point |
4683 | scanners you directed AS to use. | |
f0e652b4 | 4684 | |
041ff4dd | 4685 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4686 | |
4687 | void | |
39e6acbd KH |
4688 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
4689 | register int float_type /* 'f':.ffloat ... 'F':.float ... */) | |
252b5132 RH |
4690 | { |
4691 | register char *p; | |
041ff4dd NC |
4692 | int length; /* Number of chars in an object. */ |
4693 | register char *err; /* Error from scanning floating literal. */ | |
252b5132 RH |
4694 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4695 | ||
4696 | if (is_it_end_of_statement ()) | |
4697 | { | |
4698 | demand_empty_rest_of_line (); | |
4699 | return; | |
4700 | } | |
4701 | ||
4702 | #ifdef md_flush_pending_output | |
4703 | md_flush_pending_output (); | |
4704 | #endif | |
4705 | ||
cc3f603a JM |
4706 | #ifdef md_cons_align |
4707 | md_cons_align (1); | |
4708 | #endif | |
4709 | ||
252b5132 RH |
4710 | do |
4711 | { | |
041ff4dd | 4712 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4713 | SKIP_WHITESPACE (); |
4714 | ||
4715 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4716 | letter is legal. Someone may invent a "z" format and this routine |
4717 | has no use for such information. Lusers beware: you get | |
4718 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4719 | if (input_line_pointer[0] == '0' |
3882b010 | 4720 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4721 | input_line_pointer += 2; |
4722 | ||
4723 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4724 | point with the exact digits specified. */ |
252b5132 RH |
4725 | if (input_line_pointer[0] == ':') |
4726 | { | |
4727 | ++input_line_pointer; | |
4728 | length = hex_float (float_type, temp); | |
4729 | if (length < 0) | |
4730 | { | |
4731 | ignore_rest_of_line (); | |
4732 | return; | |
4733 | } | |
4734 | } | |
4735 | else | |
4736 | { | |
4737 | err = md_atof (float_type, temp, &length); | |
4738 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4739 | know (err != NULL || length > 0); |
252b5132 RH |
4740 | if (err) |
4741 | { | |
0e389e77 | 4742 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4743 | ignore_rest_of_line (); |
4744 | return; | |
4745 | } | |
4746 | } | |
4747 | ||
4748 | if (!need_pass_2) | |
4749 | { | |
4750 | int count; | |
4751 | ||
4752 | count = 1; | |
4753 | ||
4754 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4755 | if (*input_line_pointer == ':') | |
4756 | { | |
4757 | expressionS count_exp; | |
4758 | ||
4759 | ++input_line_pointer; | |
4760 | expression (&count_exp); | |
f0e652b4 | 4761 | |
252b5132 RH |
4762 | if (count_exp.X_op != O_constant |
4763 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4764 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4765 | else |
4766 | count = count_exp.X_add_number; | |
4767 | } | |
4768 | #endif | |
4769 | ||
4770 | while (--count >= 0) | |
4771 | { | |
4772 | p = frag_more (length); | |
4773 | memcpy (p, temp, (unsigned int) length); | |
4774 | } | |
4775 | } | |
4776 | SKIP_WHITESPACE (); | |
4777 | } | |
4778 | while (*input_line_pointer++ == ','); | |
4779 | ||
041ff4dd NC |
4780 | /* Put terminator back into stream. */ |
4781 | --input_line_pointer; | |
252b5132 | 4782 | demand_empty_rest_of_line (); |
041ff4dd | 4783 | } |
252b5132 | 4784 | \f |
041ff4dd | 4785 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4786 | |
4787 | static inline int | |
39e6acbd | 4788 | sizeof_sleb128 (offsetT value) |
252b5132 RH |
4789 | { |
4790 | register int size = 0; | |
4791 | register unsigned byte; | |
4792 | ||
4793 | do | |
4794 | { | |
4795 | byte = (value & 0x7f); | |
4796 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4797 | Fortunately, we can structure things so that the extra work reduces | |
4798 | to a noop on systems that do things "properly". */ | |
4799 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4800 | size += 1; | |
4801 | } | |
4802 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4803 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4804 | ||
4805 | return size; | |
4806 | } | |
4807 | ||
4808 | static inline int | |
39e6acbd | 4809 | sizeof_uleb128 (valueT value) |
252b5132 RH |
4810 | { |
4811 | register int size = 0; | |
4812 | register unsigned byte; | |
4813 | ||
4814 | do | |
4815 | { | |
4816 | byte = (value & 0x7f); | |
4817 | value >>= 7; | |
4818 | size += 1; | |
4819 | } | |
4820 | while (value != 0); | |
4821 | ||
4822 | return size; | |
4823 | } | |
4824 | ||
4825 | int | |
39e6acbd | 4826 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4827 | { |
4828 | if (sign) | |
4829 | return sizeof_sleb128 ((offsetT) value); | |
4830 | else | |
4831 | return sizeof_uleb128 (value); | |
4832 | } | |
4833 | ||
4834 | /* Output a LEB128 value. */ | |
4835 | ||
4836 | static inline int | |
39e6acbd | 4837 | output_sleb128 (char *p, offsetT value) |
252b5132 RH |
4838 | { |
4839 | register char *orig = p; | |
4840 | register int more; | |
4841 | ||
4842 | do | |
4843 | { | |
4844 | unsigned byte = (value & 0x7f); | |
4845 | ||
4846 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4847 | Fortunately, we can structure things so that the extra work reduces | |
4848 | to a noop on systems that do things "properly". */ | |
4849 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4850 | ||
4851 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4852 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4853 | if (more) | |
4854 | byte |= 0x80; | |
4855 | ||
4856 | *p++ = byte; | |
4857 | } | |
4858 | while (more); | |
4859 | ||
4860 | return p - orig; | |
4861 | } | |
4862 | ||
4863 | static inline int | |
39e6acbd | 4864 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4865 | { |
4866 | char *orig = p; | |
4867 | ||
4868 | do | |
4869 | { | |
4870 | unsigned byte = (value & 0x7f); | |
4871 | value >>= 7; | |
4872 | if (value != 0) | |
4873 | /* More bytes to follow. */ | |
4874 | byte |= 0x80; | |
4875 | ||
4876 | *p++ = byte; | |
4877 | } | |
4878 | while (value != 0); | |
4879 | ||
4880 | return p - orig; | |
4881 | } | |
4882 | ||
4883 | int | |
39e6acbd | 4884 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4885 | { |
4886 | if (sign) | |
4887 | return output_sleb128 (p, (offsetT) value); | |
4888 | else | |
4889 | return output_uleb128 (p, value); | |
4890 | } | |
4891 | ||
4892 | /* Do the same for bignums. We combine sizeof with output here in that | |
4893 | we don't output for NULL values of P. It isn't really as critical as | |
4894 | for "normal" values that this be streamlined. */ | |
4895 | ||
6d4d30bb | 4896 | static inline int |
39e6acbd | 4897 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4898 | { |
4899 | char *orig = p; | |
4900 | valueT val = 0; | |
4901 | int loaded = 0; | |
4902 | unsigned byte; | |
4903 | ||
4904 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4905 | while (size > 1 |
4906 | && bignum[size - 1] == LITTLENUM_MASK | |
4907 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4908 | size--; |
4909 | ||
4910 | do | |
4911 | { | |
e5604d79 RS |
4912 | /* OR in the next part of the littlenum. */ |
4913 | val |= (*bignum << loaded); | |
4914 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4915 | size--; | |
4916 | bignum++; | |
4917 | ||
4918 | /* Add bytes until there are less than 7 bits left in VAL | |
4919 | or until every non-sign bit has been written. */ | |
4920 | do | |
252b5132 | 4921 | { |
e5604d79 RS |
4922 | byte = val & 0x7f; |
4923 | loaded -= 7; | |
4924 | val >>= 7; | |
4925 | if (size > 0 | |
4926 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 4927 | byte |= 0x80; |
e5604d79 RS |
4928 | |
4929 | if (orig) | |
4930 | *p = byte; | |
4931 | p++; | |
252b5132 | 4932 | } |
e5604d79 RS |
4933 | while ((byte & 0x80) != 0 && loaded >= 7); |
4934 | } | |
4935 | while (size > 0); | |
252b5132 | 4936 | |
e5604d79 RS |
4937 | /* Mop up any left-over bits (of which there will be less than 7). */ |
4938 | if ((byte & 0x80) != 0) | |
4939 | { | |
4940 | /* Sign-extend VAL. */ | |
4941 | if (val & (1 << (loaded - 1))) | |
4942 | val |= ~0 << loaded; | |
252b5132 | 4943 | if (orig) |
e5604d79 | 4944 | *p = val & 0x7f; |
252b5132 RH |
4945 | p++; |
4946 | } | |
252b5132 RH |
4947 | |
4948 | return p - orig; | |
4949 | } | |
4950 | ||
6d4d30bb | 4951 | static inline int |
39e6acbd | 4952 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4953 | { |
4954 | char *orig = p; | |
4955 | valueT val = 0; | |
4956 | int loaded = 0; | |
4957 | unsigned byte; | |
4958 | ||
4959 | /* Strip leading zeros off the bignum. */ | |
4960 | /* XXX: Is this needed? */ | |
041ff4dd | 4961 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4962 | size--; |
4963 | ||
4964 | do | |
4965 | { | |
4966 | if (loaded < 7 && size > 0) | |
4967 | { | |
4968 | val |= (*bignum << loaded); | |
4969 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4970 | size--; | |
4971 | bignum++; | |
4972 | } | |
4973 | ||
4974 | byte = val & 0x7f; | |
4975 | loaded -= 7; | |
4976 | val >>= 7; | |
4977 | ||
4978 | if (size > 0 || val) | |
4979 | byte |= 0x80; | |
4980 | ||
4981 | if (orig) | |
4982 | *p = byte; | |
4983 | p++; | |
4984 | } | |
4985 | while (byte & 0x80); | |
4986 | ||
4987 | return p - orig; | |
4988 | } | |
4989 | ||
6d4d30bb | 4990 | static int |
39e6acbd | 4991 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
4992 | { |
4993 | if (sign) | |
4994 | return output_big_sleb128 (p, bignum, size); | |
4995 | else | |
4996 | return output_big_uleb128 (p, bignum, size); | |
4997 | } | |
4998 | ||
4999 | /* Generate the appropriate fragments for a given expression to emit a | |
5000 | leb128 value. */ | |
5001 | ||
87c245cc | 5002 | static void |
39e6acbd | 5003 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5004 | { |
5005 | operatorT op = exp->X_op; | |
b7712f8d | 5006 | unsigned int nbytes; |
252b5132 RH |
5007 | |
5008 | if (op == O_absent || op == O_illegal) | |
5009 | { | |
5010 | as_warn (_("zero assumed for missing expression")); | |
5011 | exp->X_add_number = 0; | |
5012 | op = O_constant; | |
5013 | } | |
5014 | else if (op == O_big && exp->X_add_number <= 0) | |
5015 | { | |
0e389e77 | 5016 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5017 | exp->X_add_number = 0; |
5018 | op = O_constant; | |
5019 | } | |
5020 | else if (op == O_register) | |
5021 | { | |
5022 | as_warn (_("register value used as expression")); | |
5023 | op = O_constant; | |
5024 | } | |
e5604d79 RS |
5025 | else if (op == O_constant |
5026 | && sign | |
5027 | && (exp->X_add_number < 0) != !exp->X_unsigned) | |
5028 | { | |
5029 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5030 | doesn't reflect the sign of the original value. Convert EXP | |
5031 | to a correctly-extended bignum instead. */ | |
5032 | convert_to_bignum (exp); | |
5033 | op = O_big; | |
5034 | } | |
252b5132 | 5035 | |
67a659f6 RH |
5036 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5037 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5038 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5039 | if (check_eh_frame (exp, &nbytes)) |
5040 | abort (); | |
5041 | ||
371b7465 RH |
5042 | /* Let the backend know that subsequent data may be byte aligned. */ |
5043 | #ifdef md_cons_align | |
5044 | md_cons_align (1); | |
5045 | #endif | |
5046 | ||
252b5132 RH |
5047 | if (op == O_constant) |
5048 | { | |
5049 | /* If we've got a constant, emit the thing directly right now. */ | |
5050 | ||
5051 | valueT value = exp->X_add_number; | |
5052 | int size; | |
5053 | char *p; | |
5054 | ||
5055 | size = sizeof_leb128 (value, sign); | |
5056 | p = frag_more (size); | |
5057 | output_leb128 (p, value, sign); | |
5058 | } | |
5059 | else if (op == O_big) | |
5060 | { | |
5061 | /* O_big is a different sort of constant. */ | |
5062 | ||
5063 | int size; | |
5064 | char *p; | |
5065 | ||
5066 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
5067 | p = frag_more (size); | |
5068 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
5069 | } | |
5070 | else | |
5071 | { | |
041ff4dd | 5072 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5073 | resolve things later. */ |
5074 | ||
041ff4dd | 5075 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5076 | make_expr_symbol (exp), 0, (char *) NULL); |
5077 | } | |
5078 | } | |
5079 | ||
5080 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5081 | ||
5082 | void | |
39e6acbd | 5083 | s_leb128 (int sign) |
252b5132 RH |
5084 | { |
5085 | expressionS exp; | |
5086 | ||
00bbdfe7 BW |
5087 | #ifdef md_flush_pending_output |
5088 | md_flush_pending_output (); | |
5089 | #endif | |
5090 | ||
041ff4dd NC |
5091 | do |
5092 | { | |
5093 | expression (&exp); | |
5094 | emit_leb128_expr (&exp, sign); | |
5095 | } | |
5096 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5097 | |
5098 | input_line_pointer--; | |
5099 | demand_empty_rest_of_line (); | |
5100 | } | |
5101 | \f | |
38a57ae7 NC |
5102 | static void |
5103 | stringer_append_char (int c, int bitsize) | |
5104 | { | |
5105 | if (!target_big_endian) | |
5106 | FRAG_APPEND_1_CHAR (c); | |
5107 | ||
5108 | switch (bitsize) | |
5109 | { | |
5110 | case 64: | |
5111 | FRAG_APPEND_1_CHAR (0); | |
5112 | FRAG_APPEND_1_CHAR (0); | |
5113 | FRAG_APPEND_1_CHAR (0); | |
5114 | FRAG_APPEND_1_CHAR (0); | |
5115 | /* Fall through. */ | |
5116 | case 32: | |
5117 | FRAG_APPEND_1_CHAR (0); | |
5118 | FRAG_APPEND_1_CHAR (0); | |
5119 | /* Fall through. */ | |
5120 | case 16: | |
5121 | FRAG_APPEND_1_CHAR (0); | |
5122 | /* Fall through. */ | |
5123 | case 8: | |
5124 | break; | |
5125 | default: | |
5126 | /* Called with invalid bitsize argument. */ | |
5127 | abort (); | |
5128 | break; | |
5129 | } | |
5130 | if (target_big_endian) | |
5131 | FRAG_APPEND_1_CHAR (c); | |
5132 | } | |
5133 | ||
5134 | /* Worker to do .ascii etc statements. | |
5135 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5136 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5137 | check it. |
5138 | Checks for end-of-line. | |
5139 | BITS_APPENDZERO says how many bits are in a target char. | |
5140 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5141 | |
5142 | void | |
38a57ae7 | 5143 | stringer (int bits_appendzero) |
252b5132 | 5144 | { |
38a57ae7 NC |
5145 | const int bitsize = bits_appendzero & ~7; |
5146 | const int append_zero = bits_appendzero & 1; | |
5147 | unsigned int c; | |
252b5132 RH |
5148 | char *start; |
5149 | ||
5150 | #ifdef md_flush_pending_output | |
5151 | md_flush_pending_output (); | |
5152 | #endif | |
5153 | ||
cc3f603a JM |
5154 | #ifdef md_cons_align |
5155 | md_cons_align (1); | |
5156 | #endif | |
5157 | ||
041ff4dd NC |
5158 | /* The following awkward logic is to parse ZERO or more strings, |
5159 | comma separated. Recall a string expression includes spaces | |
5160 | before the opening '\"' and spaces after the closing '\"'. | |
5161 | We fake a leading ',' if there is (supposed to be) | |
5162 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5163 | if (is_it_end_of_statement ()) |
5164 | { | |
041ff4dd NC |
5165 | c = 0; /* Skip loop. */ |
5166 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5167 | } |
5168 | else | |
5169 | { | |
041ff4dd | 5170 | c = ','; /* Do loop. */ |
252b5132 | 5171 | } |
8ac9ba6c NC |
5172 | /* If we have been switched into the abs_section then we |
5173 | will not have an obstack onto which we can hang strings. */ | |
5174 | if (now_seg == absolute_section) | |
5175 | { | |
5176 | as_bad (_("strings must be placed into a section")); | |
5177 | c = 0; | |
5178 | ignore_rest_of_line (); | |
5179 | } | |
d6415f6c | 5180 | |
252b5132 RH |
5181 | while (c == ',' || c == '<' || c == '"') |
5182 | { | |
5183 | SKIP_WHITESPACE (); | |
5184 | switch (*input_line_pointer) | |
5185 | { | |
5186 | case '\"': | |
041ff4dd | 5187 | ++input_line_pointer; /*->1st char of string. */ |
252b5132 | 5188 | start = input_line_pointer; |
38a57ae7 | 5189 | |
252b5132 | 5190 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5191 | stringer_append_char (c, bitsize); |
5192 | ||
252b5132 | 5193 | if (append_zero) |
38a57ae7 NC |
5194 | stringer_append_char (0, bitsize); |
5195 | ||
252b5132 RH |
5196 | know (input_line_pointer[-1] == '\"'); |
5197 | ||
5198 | #ifndef NO_LISTING | |
5199 | #ifdef OBJ_ELF | |
5200 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | |
d6415f6c AM |
5201 | will emit .string with a filename in the .debug section |
5202 | after a sequence of constants. See the comment in | |
5203 | emit_expr for the sequence. emit_expr will set | |
5204 | dwarf_file_string to non-zero if this string might be a | |
5205 | source file name. */ | |
252b5132 RH |
5206 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5207 | dwarf_file_string = 0; | |
5208 | else if (dwarf_file_string) | |
5209 | { | |
5210 | c = input_line_pointer[-1]; | |
5211 | input_line_pointer[-1] = '\0'; | |
5212 | listing_source_file (start); | |
5213 | input_line_pointer[-1] = c; | |
5214 | } | |
5215 | #endif | |
5216 | #endif | |
5217 | ||
5218 | break; | |
5219 | case '<': | |
5220 | input_line_pointer++; | |
5221 | c = get_single_number (); | |
38a57ae7 | 5222 | stringer_append_char (c, bitsize); |
252b5132 | 5223 | if (*input_line_pointer != '>') |
38a57ae7 NC |
5224 | as_bad (_("expected <nn>")); |
5225 | ||
252b5132 RH |
5226 | input_line_pointer++; |
5227 | break; | |
5228 | case ',': | |
5229 | input_line_pointer++; | |
5230 | break; | |
5231 | } | |
5232 | SKIP_WHITESPACE (); | |
5233 | c = *input_line_pointer; | |
5234 | } | |
5235 | ||
5236 | demand_empty_rest_of_line (); | |
38a57ae7 | 5237 | } |
252b5132 RH |
5238 | \f |
5239 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5240 | high bits set. We'll probably also have trouble with | |
5241 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5242 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5243 | |
041ff4dd | 5244 | unsigned int |
39e6acbd | 5245 | next_char_of_string (void) |
252b5132 RH |
5246 | { |
5247 | register unsigned int c; | |
5248 | ||
5249 | c = *input_line_pointer++ & CHAR_MASK; | |
5250 | switch (c) | |
5251 | { | |
5252 | case '\"': | |
5253 | c = NOT_A_CHAR; | |
5254 | break; | |
5255 | ||
5256 | case '\n': | |
0e389e77 | 5257 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5258 | bump_line_counters (); |
5259 | break; | |
5260 | ||
5261 | #ifndef NO_STRING_ESCAPES | |
5262 | case '\\': | |
5263 | switch (c = *input_line_pointer++) | |
5264 | { | |
5265 | case 'b': | |
5266 | c = '\b'; | |
5267 | break; | |
5268 | ||
5269 | case 'f': | |
5270 | c = '\f'; | |
5271 | break; | |
5272 | ||
5273 | case 'n': | |
5274 | c = '\n'; | |
5275 | break; | |
5276 | ||
5277 | case 'r': | |
5278 | c = '\r'; | |
5279 | break; | |
5280 | ||
5281 | case 't': | |
5282 | c = '\t'; | |
5283 | break; | |
5284 | ||
5285 | case 'v': | |
5286 | c = '\013'; | |
5287 | break; | |
5288 | ||
5289 | case '\\': | |
5290 | case '"': | |
041ff4dd | 5291 | break; /* As itself. */ |
252b5132 RH |
5292 | |
5293 | case '0': | |
5294 | case '1': | |
5295 | case '2': | |
5296 | case '3': | |
5297 | case '4': | |
5298 | case '5': | |
5299 | case '6': | |
5300 | case '7': | |
5301 | case '8': | |
5302 | case '9': | |
5303 | { | |
5304 | long number; | |
5305 | int i; | |
5306 | ||
041ff4dd | 5307 | for (i = 0, number = 0; |
3882b010 | 5308 | ISDIGIT (c) && i < 3; |
041ff4dd | 5309 | c = *input_line_pointer++, i++) |
252b5132 RH |
5310 | { |
5311 | number = number * 8 + c - '0'; | |
5312 | } | |
f0e652b4 | 5313 | |
252b5132 RH |
5314 | c = number & 0xff; |
5315 | } | |
5316 | --input_line_pointer; | |
5317 | break; | |
5318 | ||
5319 | case 'x': | |
5320 | case 'X': | |
5321 | { | |
5322 | long number; | |
5323 | ||
5324 | number = 0; | |
5325 | c = *input_line_pointer++; | |
3882b010 | 5326 | while (ISXDIGIT (c)) |
252b5132 | 5327 | { |
3882b010 | 5328 | if (ISDIGIT (c)) |
252b5132 | 5329 | number = number * 16 + c - '0'; |
3882b010 | 5330 | else if (ISUPPER (c)) |
252b5132 RH |
5331 | number = number * 16 + c - 'A' + 10; |
5332 | else | |
5333 | number = number * 16 + c - 'a' + 10; | |
5334 | c = *input_line_pointer++; | |
5335 | } | |
5336 | c = number & 0xff; | |
5337 | --input_line_pointer; | |
5338 | } | |
5339 | break; | |
5340 | ||
5341 | case '\n': | |
041ff4dd | 5342 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5343 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5344 | c = '\n'; |
5345 | bump_line_counters (); | |
5346 | break; | |
5347 | ||
5348 | default: | |
5349 | ||
5350 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5351 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5352 | c = '?'; |
5353 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5354 | ||
5355 | break; | |
041ff4dd | 5356 | } |
252b5132 RH |
5357 | break; |
5358 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
5359 | ||
5360 | default: | |
5361 | break; | |
041ff4dd | 5362 | } |
252b5132 | 5363 | return (c); |
041ff4dd | 5364 | } |
252b5132 RH |
5365 | \f |
5366 | static segT | |
39e6acbd | 5367 | get_segmented_expression (register expressionS *expP) |
252b5132 RH |
5368 | { |
5369 | register segT retval; | |
5370 | ||
5371 | retval = expression (expP); | |
5372 | if (expP->X_op == O_illegal | |
5373 | || expP->X_op == O_absent | |
5374 | || expP->X_op == O_big) | |
5375 | { | |
0e389e77 | 5376 | as_bad (_("expected address expression")); |
252b5132 RH |
5377 | expP->X_op = O_constant; |
5378 | expP->X_add_number = 0; | |
5379 | retval = absolute_section; | |
5380 | } | |
5381 | return retval; | |
5382 | } | |
5383 | ||
041ff4dd | 5384 | static segT |
39e6acbd | 5385 | get_known_segmented_expression (register expressionS *expP) |
252b5132 RH |
5386 | { |
5387 | register segT retval; | |
5388 | ||
5389 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
5390 | { | |
5391 | /* There is no easy way to extract the undefined symbol from the | |
5392 | expression. */ | |
5393 | if (expP->X_add_symbol != NULL | |
5394 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5395 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5396 | S_GET_NAME (expP->X_add_symbol)); | |
5397 | else | |
5398 | as_warn (_("some symbol undefined; zero assumed")); | |
5399 | retval = absolute_section; | |
5400 | expP->X_op = O_constant; | |
5401 | expP->X_add_number = 0; | |
5402 | } | |
5403 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
5404 | return (retval); | |
041ff4dd | 5405 | } |
252b5132 | 5406 | |
041ff4dd | 5407 | char /* Return terminator. */ |
39e6acbd | 5408 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5409 | { |
5410 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5411 | *val_pointer = (long) get_absolute_expression (); | |
5412 | return (*input_line_pointer++); | |
5413 | } | |
5414 | \f | |
041ff4dd NC |
5415 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5416 | Give a warning if that happens. */ | |
5417 | ||
252b5132 | 5418 | char * |
39e6acbd | 5419 | demand_copy_C_string (int *len_pointer) |
252b5132 RH |
5420 | { |
5421 | register char *s; | |
5422 | ||
5423 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5424 | { | |
5425 | register int len; | |
5426 | ||
5427 | for (len = *len_pointer; len > 0; len--) | |
5428 | { | |
5429 | if (*s == 0) | |
5430 | { | |
5431 | s = 0; | |
5432 | len = 1; | |
5433 | *len_pointer = 0; | |
0e389e77 | 5434 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5435 | } |
5436 | } | |
5437 | } | |
f0e652b4 | 5438 | |
252b5132 RH |
5439 | return s; |
5440 | } | |
5441 | \f | |
041ff4dd NC |
5442 | /* Demand string, but return a safe (=private) copy of the string. |
5443 | Return NULL if we can't read a string here. */ | |
5444 | ||
252b5132 | 5445 | char * |
39e6acbd | 5446 | demand_copy_string (int *lenP) |
252b5132 RH |
5447 | { |
5448 | register unsigned int c; | |
5449 | register int len; | |
5450 | char *retval; | |
5451 | ||
5452 | len = 0; | |
5453 | SKIP_WHITESPACE (); | |
5454 | if (*input_line_pointer == '\"') | |
5455 | { | |
041ff4dd | 5456 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5457 | |
5458 | while (is_a_char (c = next_char_of_string ())) | |
5459 | { | |
5460 | obstack_1grow (¬es, c); | |
5461 | len++; | |
5462 | } | |
5463 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5464 | null terminated string. */ |
252b5132 | 5465 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5466 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5467 | } |
5468 | else | |
5469 | { | |
c95b35a9 | 5470 | as_bad (_("missing string")); |
252b5132 RH |
5471 | retval = NULL; |
5472 | ignore_rest_of_line (); | |
5473 | } | |
5474 | *lenP = len; | |
5475 | return (retval); | |
041ff4dd | 5476 | } |
252b5132 | 5477 | \f |
041ff4dd | 5478 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5479 | |
041ff4dd | 5480 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5481 | |
041ff4dd NC |
5482 | Out: 1 if input_line_pointer->end-of-line. */ |
5483 | ||
5484 | int | |
39e6acbd | 5485 | is_it_end_of_statement (void) |
252b5132 RH |
5486 | { |
5487 | SKIP_WHITESPACE (); | |
5488 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5489 | } |
252b5132 | 5490 | |
041ff4dd | 5491 | void |
39e6acbd | 5492 | equals (char *sym_name, int reassign) |
252b5132 | 5493 | { |
252b5132 | 5494 | char *stop = NULL; |
fb25138b | 5495 | char stopc = 0; |
252b5132 RH |
5496 | |
5497 | input_line_pointer++; | |
5498 | if (*input_line_pointer == '=') | |
5499 | input_line_pointer++; | |
9497f5ac NC |
5500 | if (reassign < 0 && *input_line_pointer == '=') |
5501 | input_line_pointer++; | |
252b5132 RH |
5502 | |
5503 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5504 | input_line_pointer++; | |
5505 | ||
5506 | if (flag_mri) | |
5507 | stop = mri_comment_field (&stopc); | |
5508 | ||
9497f5ac | 5509 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5510 | |
5511 | if (flag_mri) | |
31d20a21 AM |
5512 | { |
5513 | demand_empty_rest_of_line (); | |
5514 | mri_comment_end (stop, stopc); | |
5515 | } | |
041ff4dd | 5516 | } |
252b5132 | 5517 | |
7e005732 NC |
5518 | /* .incbin -- include a file verbatim at the current location. */ |
5519 | ||
5520 | void | |
39e6acbd | 5521 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5522 | { |
5523 | FILE * binfile; | |
5524 | char * path; | |
5525 | char * filename; | |
5526 | char * binfrag; | |
5527 | long skip = 0; | |
5528 | long count = 0; | |
5529 | long bytes; | |
5530 | int len; | |
5531 | ||
5532 | #ifdef md_flush_pending_output | |
5533 | md_flush_pending_output (); | |
5534 | #endif | |
5535 | ||
cc3f603a JM |
5536 | #ifdef md_cons_align |
5537 | md_cons_align (1); | |
5538 | #endif | |
5539 | ||
7e005732 NC |
5540 | SKIP_WHITESPACE (); |
5541 | filename = demand_copy_string (& len); | |
5542 | if (filename == NULL) | |
5543 | return; | |
5544 | ||
5545 | SKIP_WHITESPACE (); | |
5546 | ||
5547 | /* Look for optional skip and count. */ | |
5548 | if (* input_line_pointer == ',') | |
5549 | { | |
5550 | ++ input_line_pointer; | |
5551 | skip = get_absolute_expression (); | |
5552 | ||
5553 | SKIP_WHITESPACE (); | |
5554 | ||
5555 | if (* input_line_pointer == ',') | |
5556 | { | |
5557 | ++ input_line_pointer; | |
5558 | ||
5559 | count = get_absolute_expression (); | |
5560 | if (count == 0) | |
5561 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5562 | ||
5563 | SKIP_WHITESPACE (); | |
5564 | } | |
5565 | } | |
5566 | ||
5567 | demand_empty_rest_of_line (); | |
5568 | ||
5569 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5570 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5571 | if (binfile == NULL) |
5572 | { | |
5573 | int i; | |
5574 | ||
1e9cc1c2 | 5575 | path = (char *) xmalloc ((unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5576 | |
5577 | for (i = 0; i < include_dir_count; i++) | |
5578 | { | |
5579 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5580 | ||
f740e790 | 5581 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5582 | if (binfile != NULL) |
5583 | break; | |
5584 | } | |
5585 | ||
5586 | if (binfile == NULL) | |
5587 | as_bad (_("file not found: %s"), filename); | |
5588 | } | |
5589 | else | |
5590 | path = xstrdup (filename); | |
5591 | ||
5592 | if (binfile) | |
5593 | { | |
f740e790 NC |
5594 | long file_len; |
5595 | ||
7e005732 NC |
5596 | register_dependency (path); |
5597 | ||
5598 | /* Compute the length of the file. */ | |
5599 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5600 | { | |
5601 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5602 | goto done; | |
5603 | } | |
f740e790 | 5604 | file_len = ftell (binfile); |
7e005732 | 5605 | |
c556cc9c | 5606 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5607 | if (count == 0) |
c556cc9c | 5608 | count = file_len - skip; |
7e005732 | 5609 | |
c556cc9c | 5610 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5611 | { |
c556cc9c | 5612 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5613 | skip, count, file_len); |
7e005732 NC |
5614 | goto done; |
5615 | } | |
5616 | ||
5617 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5618 | { | |
5619 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5620 | goto done; | |
5621 | } | |
5622 | ||
5623 | /* Allocate frag space and store file contents in it. */ | |
5624 | binfrag = frag_more (count); | |
5625 | ||
5626 | bytes = fread (binfrag, 1, count, binfile); | |
5627 | if (bytes < count) | |
5628 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5629 | path, bytes, count); | |
5630 | } | |
5631 | done: | |
5632 | if (binfile != NULL) | |
5633 | fclose (binfile); | |
5634 | if (path) | |
5635 | free (path); | |
5636 | } | |
5637 | ||
041ff4dd | 5638 | /* .include -- include a file at this point. */ |
252b5132 | 5639 | |
041ff4dd | 5640 | void |
39e6acbd | 5641 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5642 | { |
252b5132 RH |
5643 | char *filename; |
5644 | int i; | |
1e9cc1c2 | 5645 | FILE *try_file; |
252b5132 RH |
5646 | char *path; |
5647 | ||
041ff4dd | 5648 | if (!flag_m68k_mri) |
252b5132 RH |
5649 | { |
5650 | filename = demand_copy_string (&i); | |
5651 | if (filename == NULL) | |
5652 | { | |
5653 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5654 | called ignore_rest_of_line. */ |
252b5132 RH |
5655 | return; |
5656 | } | |
5657 | } | |
5658 | else | |
5659 | { | |
5660 | SKIP_WHITESPACE (); | |
5661 | i = 0; | |
041ff4dd | 5662 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5663 | && *input_line_pointer != ' ' |
5664 | && *input_line_pointer != '\t') | |
5665 | { | |
5666 | obstack_1grow (¬es, *input_line_pointer); | |
5667 | ++input_line_pointer; | |
5668 | ++i; | |
5669 | } | |
f0e652b4 | 5670 | |
252b5132 | 5671 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5672 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5673 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5674 | ++input_line_pointer; |
5675 | } | |
f0e652b4 | 5676 | |
252b5132 | 5677 | demand_empty_rest_of_line (); |
1e9cc1c2 NC |
5678 | path = (char *) xmalloc ((unsigned long) i |
5679 | + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5680 | |
252b5132 RH |
5681 | for (i = 0; i < include_dir_count; i++) |
5682 | { | |
5683 | strcpy (path, include_dirs[i]); | |
5684 | strcat (path, "/"); | |
5685 | strcat (path, filename); | |
1e9cc1c2 | 5686 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 5687 | { |
1e9cc1c2 | 5688 | fclose (try_file); |
252b5132 RH |
5689 | goto gotit; |
5690 | } | |
5691 | } | |
f0e652b4 | 5692 | |
252b5132 RH |
5693 | free (path); |
5694 | path = filename; | |
5695 | gotit: | |
041ff4dd | 5696 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5697 | register_dependency (path); |
9f10757c | 5698 | input_scrub_insert_file (path); |
041ff4dd | 5699 | } |
252b5132 | 5700 | |
041ff4dd | 5701 | void |
39e6acbd | 5702 | add_include_dir (char *path) |
252b5132 RH |
5703 | { |
5704 | int i; | |
5705 | ||
5706 | if (include_dir_count == 0) | |
5707 | { | |
5708 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5709 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5710 | include_dir_count = 2; |
5711 | } | |
5712 | else | |
5713 | { | |
5714 | include_dir_count++; | |
041ff4dd NC |
5715 | include_dirs = |
5716 | (char **) realloc (include_dirs, | |
5717 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5718 | } |
5719 | ||
041ff4dd | 5720 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5721 | |
5722 | i = strlen (path); | |
5723 | if (i > include_dir_maxlen) | |
5724 | include_dir_maxlen = i; | |
041ff4dd | 5725 | } |
252b5132 RH |
5726 | \f |
5727 | /* Output debugging information to denote the source file. */ | |
5728 | ||
5729 | static void | |
39e6acbd | 5730 | generate_file_debug (void) |
252b5132 RH |
5731 | { |
5732 | if (debug_type == DEBUG_STABS) | |
5733 | stabs_generate_asm_file (); | |
5734 | } | |
5735 | ||
5736 | /* Output line number debugging information for the current source line. */ | |
5737 | ||
5738 | void | |
39e6acbd | 5739 | generate_lineno_debug (void) |
252b5132 | 5740 | { |
252b5132 RH |
5741 | switch (debug_type) |
5742 | { | |
5743 | case DEBUG_UNSPECIFIED: | |
5744 | case DEBUG_NONE: | |
4dc7ead9 | 5745 | case DEBUG_DWARF: |
252b5132 RH |
5746 | break; |
5747 | case DEBUG_STABS: | |
5748 | stabs_generate_asm_lineno (); | |
5749 | break; | |
5750 | case DEBUG_ECOFF: | |
5751 | ecoff_generate_asm_lineno (); | |
5752 | break; | |
252b5132 | 5753 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5754 | /* ??? We could here indicate to dwarf2dbg.c that something |
5755 | has changed. However, since there is additional backend | |
5756 | support that is required (calling dwarf2_emit_insn), we | |
5757 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5758 | break; |
5759 | } | |
5760 | } | |
5761 | ||
5762 | /* Output debugging information to mark a function entry point or end point. | |
5763 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5764 | ||
5765 | void | |
39e6acbd | 5766 | s_func (int end_p) |
252b5132 RH |
5767 | { |
5768 | do_s_func (end_p, NULL); | |
5769 | } | |
5770 | ||
5771 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5772 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5773 | ||
87c245cc | 5774 | static void |
39e6acbd | 5775 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5776 | { |
5777 | /* Record the current function so that we can issue an error message for | |
5778 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5779 | arguments. */ | |
5780 | static char *current_name; | |
5781 | static char *current_label; | |
5782 | ||
5783 | if (end_p) | |
5784 | { | |
5785 | if (current_name == NULL) | |
5786 | { | |
5787 | as_bad (_("missing .func")); | |
5788 | ignore_rest_of_line (); | |
5789 | return; | |
5790 | } | |
5791 | ||
5792 | if (debug_type == DEBUG_STABS) | |
5793 | stabs_generate_asm_endfunc (current_name, current_label); | |
5794 | ||
5795 | current_name = current_label = NULL; | |
5796 | } | |
5797 | else /* ! end_p */ | |
5798 | { | |
041ff4dd NC |
5799 | char *name, *label; |
5800 | char delim1, delim2; | |
252b5132 RH |
5801 | |
5802 | if (current_name != NULL) | |
5803 | { | |
5804 | as_bad (_(".endfunc missing for previous .func")); | |
5805 | ignore_rest_of_line (); | |
5806 | return; | |
5807 | } | |
5808 | ||
5809 | name = input_line_pointer; | |
5810 | delim1 = get_symbol_end (); | |
5811 | name = xstrdup (name); | |
5812 | *input_line_pointer = delim1; | |
5813 | SKIP_WHITESPACE (); | |
5814 | if (*input_line_pointer != ',') | |
5815 | { | |
5816 | if (default_prefix) | |
05f4ab67 AM |
5817 | { |
5818 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
5819 | as_fatal ("%s", xstrerror (errno)); | |
5820 | } | |
252b5132 RH |
5821 | else |
5822 | { | |
7be1c489 | 5823 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
5824 | /* Missing entry point, use function's name with the leading |
5825 | char prepended. */ | |
5826 | if (leading_char) | |
05f4ab67 AM |
5827 | { |
5828 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
5829 | as_fatal ("%s", xstrerror (errno)); | |
5830 | } | |
252b5132 RH |
5831 | else |
5832 | label = name; | |
5833 | } | |
5834 | } | |
5835 | else | |
5836 | { | |
5837 | ++input_line_pointer; | |
5838 | SKIP_WHITESPACE (); | |
5839 | label = input_line_pointer; | |
5840 | delim2 = get_symbol_end (); | |
5841 | label = xstrdup (label); | |
5842 | *input_line_pointer = delim2; | |
5843 | } | |
5844 | ||
5845 | if (debug_type == DEBUG_STABS) | |
5846 | stabs_generate_asm_func (name, label); | |
5847 | ||
5848 | current_name = name; | |
5849 | current_label = label; | |
5850 | } | |
5851 | ||
5852 | demand_empty_rest_of_line (); | |
5853 | } | |
5854 | \f | |
041ff4dd | 5855 | void |
39e6acbd | 5856 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5857 | { |
40a4d956 | 5858 | ignore_rest_of_line (); |
252b5132 RH |
5859 | } |
5860 | ||
252b5132 | 5861 | void |
39e6acbd | 5862 | read_print_statistics (FILE *file) |
252b5132 RH |
5863 | { |
5864 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5865 | } | |
5866 | ||
041ff4dd NC |
5867 | /* Inserts the given line into the input stream. |
5868 | ||
9f10757c TW |
5869 | This call avoids macro/conditionals nesting checking, since the contents of |
5870 | the line are assumed to replace the contents of a line already scanned. | |
5871 | ||
47eebc20 | 5872 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
5873 | called by md_start_line_hook(). The given line is assumed to already be |
5874 | properly scrubbed. */ | |
5875 | ||
5876 | void | |
39e6acbd | 5877 | input_scrub_insert_line (const char *line) |
9f10757c TW |
5878 | { |
5879 | sb newline; | |
5880 | sb_new (&newline); | |
5881 | sb_add_string (&newline, line); | |
5882 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5883 | sb_kill (&newline); | |
5884 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5885 | } | |
5886 | ||
5887 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5888 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5889 | |
5890 | void | |
39e6acbd | 5891 | input_scrub_insert_file (char *path) |
9f10757c TW |
5892 | { |
5893 | input_scrub_include_file (path, input_line_pointer); | |
5894 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5895 | } | |
40a4d956 JB |
5896 | |
5897 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
5898 | ||
5899 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
5900 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
5901 | #endif | |
5902 | ||
5903 | static char * | |
7592cfd7 NC |
5904 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
5905 | int in_macro) | |
40a4d956 JB |
5906 | { |
5907 | char inquote = '\0'; | |
5908 | int inescape = 0; | |
5909 | ||
5910 | while (!is_end_of_line[(unsigned char) *s] | |
5911 | || (inquote && !ISCNTRL (*s)) | |
5912 | || (inquote == '\'' && flag_mri) | |
5913 | #ifdef TC_EOL_IN_INSN | |
5914 | || (insn && TC_EOL_IN_INSN (s)) | |
5915 | #endif | |
7592cfd7 NC |
5916 | /* PR 6926: When we are parsing the body of a macro the sequence |
5917 | \@ is special - it refers to the invocation count. If the @ | |
5918 | character happens to be registered as a line-separator character | |
5919 | by the target, then the is_end_of_line[] test above will have | |
5920 | returned true, but we need to ignore the line separating | |
5921 | semantics in this particular case. */ | |
5922 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
5923 | ) |
5924 | { | |
5925 | if (mri_string && *s == '\'') | |
5926 | inquote ^= *s; | |
5927 | else if (inescape) | |
5928 | inescape = 0; | |
5929 | else if (*s == '\\') | |
5930 | inescape = 1; | |
5931 | else if (!inquote | |
5932 | ? *s == '"' | |
5933 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
5934 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
5935 | #endif | |
5936 | : *s == inquote) | |
5937 | inquote ^= *s; | |
5938 | ++s; | |
5939 | } | |
5940 | if (inquote) | |
5941 | as_warn (_("missing closing `%c'"), inquote); | |
5942 | if (inescape) | |
5943 | as_warn (_("stray `\\'")); | |
5944 | return s; | |
5945 | } | |
5946 | ||
5947 | char * | |
5948 | find_end_of_line (char *s, int mri_string) | |
5949 | { | |
7592cfd7 | 5950 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 5951 | } |