Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
f7e42eb4 | 2 | Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
3d540e93 NC |
3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
4 | 2010 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 | |
d58a1929 | 524 | /* Now CFI ones. */ |
54cfded0 AM |
525 | pop_table_name = "cfi"; |
526 | pop_override_ok = 1; | |
527 | cfi_pop_insert (); | |
252b5132 RH |
528 | } |
529 | \f | |
530 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
531 | if (ignore_input ()) \ | |
532 | { \ | |
7592cfd7 | 533 | char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \ |
40a4d956 JB |
534 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
535 | && eol >= buffer_limit) \ | |
536 | ? buffer_limit \ | |
537 | : eol + 1; \ | |
252b5132 RH |
538 | continue; \ |
539 | } | |
540 | ||
252b5132 RH |
541 | /* This function is used when scrubbing the characters between #APP |
542 | and #NO_APP. */ | |
543 | ||
544 | static char *scrub_string; | |
545 | static char *scrub_string_end; | |
546 | ||
547 | static int | |
39e6acbd | 548 | scrub_from_string (char *buf, int buflen) |
252b5132 | 549 | { |
2b47531b ILT |
550 | int copy; |
551 | ||
552 | copy = scrub_string_end - scrub_string; | |
553 | if (copy > buflen) | |
554 | copy = buflen; | |
555 | memcpy (buf, scrub_string, copy); | |
556 | scrub_string += copy; | |
557 | return copy; | |
252b5132 RH |
558 | } |
559 | ||
5e75c3ab JB |
560 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
561 | static int | |
562 | try_macro (char term, const char *line) | |
563 | { | |
564 | sb out; | |
565 | const char *err; | |
566 | macro_entry *macro; | |
567 | ||
568 | if (check_macro (line, &out, &err, ¯o)) | |
569 | { | |
570 | if (err != NULL) | |
571 | as_bad ("%s", err); | |
572 | *input_line_pointer++ = term; | |
573 | input_scrub_include_sb (&out, | |
574 | input_line_pointer, 1); | |
575 | sb_kill (&out); | |
576 | buffer_limit = | |
577 | input_scrub_next_buffer (&input_line_pointer); | |
578 | #ifdef md_macro_info | |
579 | md_macro_info (macro); | |
580 | #endif | |
581 | return 1; | |
582 | } | |
583 | return 0; | |
584 | } | |
585 | ||
041ff4dd NC |
586 | /* We read the file, putting things into a web that represents what we |
587 | have been reading. */ | |
588 | void | |
39e6acbd | 589 | read_a_source_file (char *name) |
252b5132 | 590 | { |
91d6fa6a NC |
591 | char c; |
592 | char *s; /* String of symbol, '\0' appended. */ | |
593 | int temp; | |
252b5132 RH |
594 | pseudo_typeS *pop; |
595 | ||
4c400d5e AM |
596 | #ifdef WARN_COMMENTS |
597 | found_comment = 0; | |
598 | #endif | |
599 | ||
252b5132 RH |
600 | buffer = input_scrub_new_file (name); |
601 | ||
602 | listing_file (name); | |
603 | listing_newline (NULL); | |
604 | register_dependency (name); | |
605 | ||
606 | /* Generate debugging information before we've read anything in to denote | |
607 | this file as the "main" source file and not a subordinate one | |
608 | (e.g. N_SO vs N_SOL in stabs). */ | |
609 | generate_file_debug (); | |
610 | ||
611 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 612 | { /* We have another line to parse. */ |
5e75c3ab JB |
613 | #ifndef NO_LISTING |
614 | /* In order to avoid listing macro expansion lines with labels | |
615 | multiple times, keep track of which line was last issued. */ | |
616 | static char *last_eol; | |
617 | ||
618 | last_eol = NULL; | |
619 | #endif | |
252b5132 RH |
620 | while (input_line_pointer < buffer_limit) |
621 | { | |
f19df8f7 | 622 | bfd_boolean was_new_line; |
041ff4dd | 623 | /* We have more of this buffer to parse. */ |
252b5132 | 624 | |
041ff4dd NC |
625 | /* We now have input_line_pointer->1st char of next line. |
626 | If input_line_pointer [-1] == '\n' then we just | |
627 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
628 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
629 | if (was_new_line) | |
252b5132 | 630 | { |
4a826962 | 631 | symbol_set_value_now (&dot_symbol); |
252b5132 RH |
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; | |
252b5132 RH |
683 | int mri_line_macro; |
684 | ||
252b5132 RH |
685 | HANDLE_CONDITIONAL_ASSEMBLY (); |
686 | ||
687 | c = get_symbol_end (); | |
688 | ||
689 | /* In MRI mode, the EQU and MACRO pseudoops must | |
690 | be handled specially. */ | |
691 | mri_line_macro = 0; | |
692 | if (flag_m68k_mri) | |
693 | { | |
694 | char *rest = input_line_pointer + 1; | |
695 | ||
696 | if (*rest == ':') | |
697 | ++rest; | |
698 | if (*rest == ' ' || *rest == '\t') | |
699 | ++rest; | |
700 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
701 | || strncasecmp (rest, "SET", 3) == 0) | |
702 | && (rest[3] == ' ' || rest[3] == '\t')) | |
703 | { | |
704 | input_line_pointer = rest + 3; | |
705 | equals (line_start, | |
706 | strncasecmp (rest, "SET", 3) == 0); | |
707 | continue; | |
708 | } | |
709 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
710 | && (rest[5] == ' ' | |
711 | || rest[5] == '\t' | |
712 | || is_end_of_line[(unsigned char) rest[5]])) | |
713 | mri_line_macro = 1; | |
714 | } | |
715 | ||
716 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
717 | pseudo-op specially: we don't want to put the |
718 | symbol in the symbol table. */ | |
041ff4dd | 719 | if (!mri_line_macro |
a25c045a | 720 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
721 | && TC_START_LABEL_WITHOUT_COLON(c, |
722 | input_line_pointer) | |
a25c045a | 723 | #endif |
ef99799a | 724 | ) |
252b5132 RH |
725 | line_label = colon (line_start); |
726 | else | |
727 | line_label = symbol_create (line_start, | |
728 | absolute_section, | |
729 | (valueT) 0, | |
730 | &zero_address_frag); | |
731 | ||
732 | *input_line_pointer = c; | |
733 | if (c == ':') | |
734 | input_line_pointer++; | |
735 | } | |
736 | } | |
737 | } | |
738 | ||
47eebc20 | 739 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
740 | We expect a well-formed assembler statement. |
741 | A "symbol-name:" is a statement. | |
f0e652b4 | 742 | |
041ff4dd NC |
743 | Depending on what compiler is used, the order of these tests |
744 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
745 | Each test is independent of all other tests at the (top) |
746 | level. */ | |
747 | do | |
041ff4dd | 748 | c = *input_line_pointer++; |
d2bdaea8 | 749 | while (c == '\t' || c == ' ' || c == '\f'); |
252b5132 | 750 | |
041ff4dd NC |
751 | /* C is the 1st significant character. |
752 | Input_line_pointer points after that character. */ | |
252b5132 RH |
753 | if (is_name_beginner (c)) |
754 | { | |
041ff4dd | 755 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
756 | HANDLE_CONDITIONAL_ASSEMBLY (); |
757 | ||
758 | s = --input_line_pointer; | |
041ff4dd NC |
759 | c = get_symbol_end (); /* name's delimiter. */ |
760 | ||
761 | /* C is character after symbol. | |
d6415f6c AM |
762 | That character's place in the input line is now '\0'. |
763 | S points to the beginning of the symbol. | |
764 | [In case of pseudo-op, s->'.'.] | |
765 | Input_line_pointer->'\0' where c was. */ | |
5e8c8f8f | 766 | if (TC_START_LABEL (c, s, input_line_pointer)) |
252b5132 RH |
767 | { |
768 | if (flag_m68k_mri) | |
769 | { | |
770 | char *rest = input_line_pointer + 1; | |
771 | ||
772 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
773 | if (*rest == ':') |
774 | ++rest; | |
f0e652b4 | 775 | |
252b5132 RH |
776 | if (*rest == ' ' || *rest == '\t') |
777 | ++rest; | |
f0e652b4 | 778 | |
252b5132 RH |
779 | if ((strncasecmp (rest, "EQU", 3) == 0 |
780 | || strncasecmp (rest, "SET", 3) == 0) | |
781 | && (rest[3] == ' ' || rest[3] == '\t')) | |
782 | { | |
783 | input_line_pointer = rest + 3; | |
784 | equals (s, 1); | |
785 | continue; | |
786 | } | |
787 | } | |
788 | ||
041ff4dd NC |
789 | line_label = colon (s); /* User-defined label. */ |
790 | /* Put ':' back for error messages' sake. */ | |
791 | *input_line_pointer++ = ':'; | |
a645d1eb L |
792 | #ifdef tc_check_label |
793 | tc_check_label (line_label); | |
794 | #endif | |
041ff4dd | 795 | /* Input_line_pointer->after ':'. */ |
252b5132 | 796 | SKIP_WHITESPACE (); |
252b5132 | 797 | } |
18d7868b HPN |
798 | else if ((c == '=' && input_line_pointer[1] == '=') |
799 | || ((c == ' ' || c == '\t') | |
800 | && input_line_pointer[1] == '=' | |
801 | && input_line_pointer[2] == '=')) | |
9497f5ac NC |
802 | { |
803 | equals (s, -1); | |
804 | demand_empty_rest_of_line (); | |
805 | } | |
ee3c9814 CM |
806 | else if ((c == '=' |
807 | || ((c == ' ' || c == '\t') | |
808 | && input_line_pointer[1] == '=')) | |
809 | #ifdef TC_EQUAL_IN_INSN | |
810 | && !TC_EQUAL_IN_INSN (c, s) | |
811 | #endif | |
812 | ) | |
252b5132 RH |
813 | { |
814 | equals (s, 1); | |
815 | demand_empty_rest_of_line (); | |
816 | } | |
817 | else | |
041ff4dd NC |
818 | { |
819 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
820 | pop = NULL; |
821 | ||
a8a3b3b2 | 822 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
823 | { |
824 | char *s2 = s; | |
37d8bb27 NC |
825 | |
826 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
827 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 828 | |
252b5132 RH |
829 | while (*s2) |
830 | { | |
3882b010 | 831 | *s2 = TOLOWER (*s2); |
252b5132 RH |
832 | s2++; |
833 | } | |
834 | } | |
835 | #endif | |
abd63a32 | 836 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 837 | { |
7be1c489 AM |
838 | /* The MRI assembler uses pseudo-ops without |
839 | a period. */ | |
252b5132 RH |
840 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
841 | if (pop != NULL && pop->poc_handler == NULL) | |
842 | pop = NULL; | |
843 | } | |
844 | ||
845 | if (pop != NULL | |
041ff4dd | 846 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 847 | { |
041ff4dd | 848 | /* PSEUDO - OP. |
f0e652b4 | 849 | |
d6415f6c AM |
850 | WARNING: c has next char, which may be end-of-line. |
851 | We lookup the pseudo-op table with s+1 because we | |
852 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
853 | |
854 | if (pop == NULL) | |
855 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
856 | if (pop && !pop->poc_handler) |
857 | pop = NULL; | |
252b5132 RH |
858 | |
859 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
860 | automatic alignment directive. What a hack |
861 | this is. */ | |
252b5132 RH |
862 | if (mri_pending_align |
863 | && (pop == NULL | |
041ff4dd NC |
864 | || !((pop->poc_handler == cons |
865 | && pop->poc_val == 1) | |
866 | || (pop->poc_handler == s_space | |
867 | && pop->poc_val == 1) | |
252b5132 | 868 | #ifdef tc_conditional_pseudoop |
041ff4dd | 869 | || tc_conditional_pseudoop (pop) |
252b5132 | 870 | #endif |
041ff4dd NC |
871 | || pop->poc_handler == s_if |
872 | || pop->poc_handler == s_ifdef | |
873 | || pop->poc_handler == s_ifc | |
874 | || pop->poc_handler == s_ifeqs | |
875 | || pop->poc_handler == s_else | |
876 | || pop->poc_handler == s_endif | |
877 | || pop->poc_handler == s_globl | |
878 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
879 | { |
880 | do_align (1, (char *) NULL, 0, 0); | |
881 | mri_pending_align = 0; | |
f0e652b4 | 882 | |
252b5132 RH |
883 | if (line_label != NULL) |
884 | { | |
2b47531b | 885 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
886 | S_SET_VALUE (line_label, frag_now_fix ()); |
887 | } | |
888 | } | |
889 | ||
041ff4dd | 890 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
891 | if (pop == NULL) |
892 | { | |
5e75c3ab JB |
893 | char *end = input_line_pointer; |
894 | ||
252b5132 RH |
895 | *input_line_pointer = c; |
896 | s_ignore (0); | |
5e75c3ab JB |
897 | c = *--input_line_pointer; |
898 | *input_line_pointer = '\0'; | |
899 | if (! macro_defined || ! try_macro (c, s)) | |
900 | { | |
901 | *end = '\0'; | |
902 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
903 | *input_line_pointer++ = c; | |
904 | } | |
252b5132 RH |
905 | continue; |
906 | } | |
907 | ||
041ff4dd | 908 | /* Put it back for error messages etc. */ |
252b5132 RH |
909 | *input_line_pointer = c; |
910 | /* The following skip of whitespace is compulsory. | |
911 | A well shaped space is sometimes all that separates | |
041ff4dd | 912 | keyword from operands. */ |
252b5132 RH |
913 | if (c == ' ' || c == '\t') |
914 | input_line_pointer++; | |
041ff4dd NC |
915 | |
916 | /* Input_line is restored. | |
d6415f6c AM |
917 | Input_line_pointer->1st non-blank char |
918 | after pseudo-operation. */ | |
252b5132 RH |
919 | (*pop->poc_handler) (pop->poc_val); |
920 | ||
921 | /* If that was .end, just get out now. */ | |
922 | if (pop->poc_handler == s_end) | |
923 | goto quit; | |
924 | } | |
925 | else | |
926 | { | |
041ff4dd NC |
927 | /* WARNING: c has char, which may be end-of-line. */ |
928 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 | 929 | *input_line_pointer = c; |
7592cfd7 | 930 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
252b5132 RH |
931 | c = *input_line_pointer; |
932 | *input_line_pointer = '\0'; | |
933 | ||
934 | generate_lineno_debug (); | |
935 | ||
5e75c3ab JB |
936 | if (macro_defined && try_macro (c, s)) |
937 | continue; | |
252b5132 RH |
938 | |
939 | if (mri_pending_align) | |
940 | { | |
941 | do_align (1, (char *) NULL, 0, 0); | |
942 | mri_pending_align = 0; | |
943 | if (line_label != NULL) | |
944 | { | |
2b47531b | 945 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
946 | S_SET_VALUE (line_label, frag_now_fix ()); |
947 | } | |
948 | } | |
949 | ||
041ff4dd | 950 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
951 | |
952 | *input_line_pointer++ = c; | |
953 | ||
954 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
955 | this instruction. */ |
956 | } | |
957 | } | |
252b5132 | 958 | continue; |
041ff4dd | 959 | } |
252b5132 RH |
960 | |
961 | /* Empty statement? */ | |
962 | if (is_end_of_line[(unsigned char) c]) | |
963 | continue; | |
964 | ||
3882b010 | 965 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 966 | { |
041ff4dd | 967 | /* local label ("4:") */ |
252b5132 RH |
968 | char *backup = input_line_pointer; |
969 | ||
970 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
971 | ||
972 | temp = c - '0'; | |
973 | ||
041ff4dd | 974 | /* Read the whole number. */ |
3882b010 | 975 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
976 | { |
977 | temp = (temp * 10) + *input_line_pointer - '0'; | |
978 | ++input_line_pointer; | |
041ff4dd | 979 | } |
252b5132 RH |
980 | |
981 | if (LOCAL_LABELS_DOLLAR | |
982 | && *input_line_pointer == '$' | |
983 | && *(input_line_pointer + 1) == ':') | |
984 | { | |
985 | input_line_pointer += 2; | |
986 | ||
987 | if (dollar_label_defined (temp)) | |
988 | { | |
989 | as_fatal (_("label \"%d$\" redefined"), temp); | |
990 | } | |
991 | ||
992 | define_dollar_label (temp); | |
993 | colon (dollar_label_name (temp, 0)); | |
994 | continue; | |
995 | } | |
996 | ||
997 | if (LOCAL_LABELS_FB | |
998 | && *input_line_pointer++ == ':') | |
999 | { | |
1000 | fb_label_instance_inc (temp); | |
1001 | colon (fb_label_name (temp, 0)); | |
1002 | continue; | |
1003 | } | |
1004 | ||
1005 | input_line_pointer = backup; | |
1006 | } /* local label ("4:") */ | |
1007 | ||
1008 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 1009 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1010 | sb sbuf; |
252b5132 RH |
1011 | char *ends; |
1012 | char *new_buf; | |
1013 | char *new_tmp; | |
1014 | unsigned int new_length; | |
1015 | char *tmp_buf = 0; | |
1016 | ||
252b5132 RH |
1017 | s = input_line_pointer; |
1018 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1019 | { |
1020 | /* We ignore it. */ | |
1021 | ignore_rest_of_line (); | |
1022 | continue; | |
1023 | } | |
1024 | bump_line_counters (); | |
252b5132 RH |
1025 | s += 4; |
1026 | ||
64e55042 | 1027 | sb_new (&sbuf); |
252b5132 RH |
1028 | ends = strstr (s, "#NO_APP\n"); |
1029 | ||
1030 | if (!ends) | |
1031 | { | |
1032 | unsigned int tmp_len; | |
1033 | unsigned int num; | |
1034 | ||
1035 | /* The end of the #APP wasn't in this buffer. We | |
1036 | keep reading in buffers until we find the #NO_APP | |
1037 | that goes with this #APP There is one. The specs | |
47eebc20 | 1038 | guarantee it... */ |
252b5132 | 1039 | tmp_len = buffer_limit - s; |
1e9cc1c2 | 1040 | tmp_buf = (char *) xmalloc (tmp_len + 1); |
252b5132 RH |
1041 | memcpy (tmp_buf, s, tmp_len); |
1042 | do | |
1043 | { | |
1044 | new_tmp = input_scrub_next_buffer (&buffer); | |
1045 | if (!new_tmp) | |
1046 | break; | |
1047 | else | |
1048 | buffer_limit = new_tmp; | |
1049 | input_line_pointer = buffer; | |
1050 | ends = strstr (buffer, "#NO_APP\n"); | |
1051 | if (ends) | |
1052 | num = ends - buffer; | |
1053 | else | |
1054 | num = buffer_limit - buffer; | |
1055 | ||
1e9cc1c2 | 1056 | tmp_buf = (char *) xrealloc (tmp_buf, tmp_len + num); |
252b5132 RH |
1057 | memcpy (tmp_buf + tmp_len, buffer, num); |
1058 | tmp_len += num; | |
1059 | } | |
1060 | while (!ends); | |
1061 | ||
1062 | input_line_pointer = ends ? ends + 8 : NULL; | |
1063 | ||
1064 | s = tmp_buf; | |
1065 | ends = s + tmp_len; | |
1066 | ||
1067 | } | |
1068 | else | |
1069 | { | |
1070 | input_line_pointer = ends + 8; | |
1071 | } | |
1072 | ||
1073 | scrub_string = s; | |
1074 | scrub_string_end = ends; | |
1075 | ||
1076 | new_length = ends - s; | |
1077 | new_buf = (char *) xmalloc (new_length); | |
1078 | new_tmp = new_buf; | |
1079 | for (;;) | |
1080 | { | |
1081 | int space; | |
1082 | int size; | |
1083 | ||
1084 | space = (new_buf + new_length) - new_tmp; | |
1085 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1086 | ||
1087 | if (size < space) | |
1088 | { | |
64e55042 | 1089 | new_tmp[size] = 0; |
252b5132 RH |
1090 | break; |
1091 | } | |
1092 | ||
1e9cc1c2 | 1093 | new_buf = (char *) xrealloc (new_buf, new_length + 100); |
252b5132 RH |
1094 | new_tmp = new_buf + new_length; |
1095 | new_length += 100; | |
1096 | } | |
1097 | ||
1098 | if (tmp_buf) | |
1099 | free (tmp_buf); | |
f0e652b4 | 1100 | |
64e55042 HPN |
1101 | /* We've "scrubbed" input to the preferred format. In the |
1102 | process we may have consumed the whole of the remaining | |
1103 | file (and included files). We handle this formatted | |
1104 | input similar to that of macro expansion, letting | |
1105 | actual macro expansion (possibly nested) and other | |
1106 | input expansion work. Beware that in messages, line | |
1107 | numbers and possibly file names will be incorrect. */ | |
1108 | sb_add_string (&sbuf, new_buf); | |
1109 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); | |
1110 | sb_kill (&sbuf); | |
1111 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1112 | free (new_buf); | |
252b5132 RH |
1113 | continue; |
1114 | } | |
1115 | ||
1116 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1117 | ||
1118 | #ifdef tc_unrecognized_line | |
1119 | if (tc_unrecognized_line (c)) | |
1120 | continue; | |
1121 | #endif | |
0e389e77 | 1122 | input_line_pointer--; |
601e61cd | 1123 | /* Report unknown char as error. */ |
c95b35a9 | 1124 | demand_empty_rest_of_line (); |
041ff4dd | 1125 | } |
252b5132 RH |
1126 | |
1127 | #ifdef md_after_pass_hook | |
1128 | md_after_pass_hook (); | |
1129 | #endif | |
041ff4dd | 1130 | } |
4a826962 | 1131 | symbol_set_value_now (&dot_symbol); |
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); | |
87975d2a AM |
1614 | #else |
1615 | (void) align; | |
252b5132 RH |
1616 | #endif |
1617 | ||
1618 | if (line_label != NULL) | |
1619 | { | |
2b47531b ILT |
1620 | expressionS exp; |
1621 | exp.X_op = O_symbol; | |
1622 | exp.X_add_symbol = sym; | |
1623 | exp.X_add_number = 0; | |
1624 | symbol_set_value_expression (line_label, &exp); | |
1625 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1626 | S_SET_SEGMENT (line_label, expr_section); |
1627 | } | |
1628 | ||
1629 | /* FIXME: We just ignore the small argument, which distinguishes | |
1630 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1631 | ||
1632 | /* Ignore the type and hptype. */ | |
1633 | if (*input_line_pointer == ',') | |
1634 | input_line_pointer += 2; | |
1635 | if (*input_line_pointer == ',') | |
1636 | input_line_pointer += 2; | |
1637 | ||
1638 | demand_empty_rest_of_line (); | |
1639 | ||
1640 | mri_comment_end (stop, stopc); | |
1641 | } | |
1642 | ||
1643 | void | |
39e6acbd | 1644 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1645 | { |
1646 | segT section; | |
3d540e93 | 1647 | int temp; |
252b5132 RH |
1648 | |
1649 | temp = get_absolute_expression (); | |
1650 | if (flag_readonly_data_in_text) | |
1651 | { | |
1652 | section = text_section; | |
1653 | temp += 1000; | |
1654 | } | |
1655 | else | |
1656 | section = data_section; | |
1657 | ||
1658 | subseg_set (section, (subsegT) temp); | |
1659 | ||
1660 | #ifdef OBJ_VMS | |
1661 | const_flag = 0; | |
1662 | #endif | |
1663 | demand_empty_rest_of_line (); | |
1664 | } | |
1665 | ||
1666 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1667 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1668 | file name. This default definition may be overridden by the object | |
1669 | or CPU specific pseudo-ops. This function is also the default | |
1670 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1671 | .file. */ | |
1672 | ||
ecb4347a | 1673 | void |
f17c130b | 1674 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1675 | { |
1676 | #ifdef LISTING | |
1677 | if (listing) | |
1678 | listing_source_file (file); | |
1679 | #endif | |
1680 | register_dependency (file); | |
1681 | #ifdef obj_app_file | |
c04f5787 | 1682 | obj_app_file (file, appfile); |
ecb4347a DJ |
1683 | #endif |
1684 | } | |
1685 | ||
041ff4dd | 1686 | void |
39e6acbd | 1687 | s_app_file (int appfile) |
252b5132 | 1688 | { |
3d540e93 | 1689 | char *s; |
252b5132 RH |
1690 | int length; |
1691 | ||
041ff4dd | 1692 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1693 | if ((s = demand_copy_string (&length)) != 0) |
1694 | { | |
252b5132 | 1695 | int may_omit |
93e914b2 | 1696 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
1697 | |
1698 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1699 | backquote. */ |
252b5132 RH |
1700 | if (flag_m68k_mri |
1701 | && *input_line_pointer == '\'' | |
1702 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1703 | ++input_line_pointer; | |
1704 | ||
1705 | demand_empty_rest_of_line (); | |
041ff4dd | 1706 | if (!may_omit) |
c04f5787 | 1707 | s_app_file_string (s, appfile); |
252b5132 RH |
1708 | } |
1709 | } | |
1710 | ||
e9fc6c21 AO |
1711 | static int |
1712 | get_linefile_number (int *flag) | |
1713 | { | |
1714 | SKIP_WHITESPACE (); | |
1715 | ||
1716 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
1717 | return 0; | |
1718 | ||
1719 | *flag = get_absolute_expression (); | |
1720 | ||
1721 | return 1; | |
1722 | } | |
1723 | ||
252b5132 RH |
1724 | /* Handle the .appline pseudo-op. This is automatically generated by |
1725 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1726 | default definition may be overridden by the object or CPU specific | |
1727 | pseudo-ops. */ | |
1728 | ||
1729 | void | |
93e914b2 | 1730 | s_app_line (int appline) |
252b5132 | 1731 | { |
e9fc6c21 | 1732 | char *file = NULL; |
252b5132 RH |
1733 | int l; |
1734 | ||
1735 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
1736 | if (appline) |
1737 | l = get_absolute_expression (); | |
1738 | else if (!get_linefile_number (&l)) | |
1739 | { | |
1740 | ignore_rest_of_line (); | |
1741 | return; | |
1742 | } | |
1743 | ||
1744 | l--; | |
47837f8e NC |
1745 | |
1746 | if (l < -1) | |
252b5132 | 1747 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
1748 | Besides, it's silly. GCC however will generate a line number of |
1749 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
1750 | ||
1751 | # 0 "<built-in>" | |
1752 | ||
1753 | We do not want to barf on this, especially since such files are used | |
1754 | in the GCC and GDB testsuites. So we check for negative line numbers | |
1755 | rather than non-positive line numbers. */ | |
0e389e77 | 1756 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1757 | l + 1); |
252b5132 RH |
1758 | else |
1759 | { | |
93e914b2 | 1760 | int flags = 0; |
93e914b2 AO |
1761 | int length = 0; |
1762 | ||
1763 | if (!appline) | |
1764 | { | |
e9fc6c21 AO |
1765 | SKIP_WHITESPACE (); |
1766 | ||
1767 | if (*input_line_pointer == '"') | |
1768 | file = demand_copy_string (&length); | |
93e914b2 AO |
1769 | |
1770 | if (file) | |
1771 | { | |
1772 | int this_flag; | |
1773 | ||
e9fc6c21 | 1774 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
1775 | switch (this_flag) |
1776 | { | |
1777 | /* From GCC's cpp documentation: | |
1778 | 1: start of a new file. | |
1779 | 2: returning to a file after having included | |
1780 | another file. | |
1781 | 3: following text comes from a system header file. | |
1782 | 4: following text should be treated as extern "C". | |
1783 | ||
1784 | 4 is nonsensical for the assembler; 3, we don't | |
1785 | care about, so we ignore it just in case a | |
1786 | system header file is included while | |
1787 | preprocessing assembly. So 1 and 2 are all we | |
1788 | care about, and they are mutually incompatible. | |
1789 | new_logical_line_flags() demands this. */ | |
1790 | case 1: | |
1791 | case 2: | |
1792 | if (flags && flags != (1 << this_flag)) | |
1793 | as_warn (_("incompatible flag %i in line directive"), | |
1794 | this_flag); | |
1795 | else | |
1796 | flags |= 1 << this_flag; | |
1797 | break; | |
1798 | ||
1799 | case 3: | |
1800 | case 4: | |
1801 | /* We ignore these. */ | |
1802 | break; | |
1803 | ||
1804 | default: | |
1805 | as_warn (_("unsupported flag %i in line directive"), | |
1806 | this_flag); | |
1807 | break; | |
1808 | } | |
e9fc6c21 AO |
1809 | |
1810 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
1811 | file = 0; | |
93e914b2 AO |
1812 | } |
1813 | } | |
1814 | ||
e9fc6c21 AO |
1815 | if (appline || file) |
1816 | { | |
1817 | new_logical_line_flags (file, l, flags); | |
252b5132 | 1818 | #ifdef LISTING |
e9fc6c21 AO |
1819 | if (listing) |
1820 | listing_source_line (l); | |
252b5132 | 1821 | #endif |
e9fc6c21 | 1822 | } |
252b5132 | 1823 | } |
e9fc6c21 AO |
1824 | if (appline || file) |
1825 | demand_empty_rest_of_line (); | |
1826 | else | |
1827 | ignore_rest_of_line (); | |
252b5132 RH |
1828 | } |
1829 | ||
1830 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1831 | read_a_source_file. */ | |
1832 | ||
1833 | void | |
39e6acbd | 1834 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1835 | { |
1836 | if (flag_mri) | |
1837 | { | |
1838 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 1839 | but we don't support that. */ |
252b5132 | 1840 | SKIP_WHITESPACE (); |
041ff4dd | 1841 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1842 | && *input_line_pointer != '*' |
1843 | && *input_line_pointer != '!') | |
1844 | as_warn (_("start address not supported")); | |
1845 | } | |
1846 | } | |
1847 | ||
1848 | /* Handle the .err pseudo-op. */ | |
1849 | ||
1850 | void | |
39e6acbd | 1851 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1852 | { |
1853 | as_bad (_(".err encountered")); | |
1854 | demand_empty_rest_of_line (); | |
d190d046 HPN |
1855 | } |
1856 | ||
1857 | /* Handle the .error and .warning pseudo-ops. */ | |
1858 | ||
1859 | void | |
1860 | s_errwarn (int err) | |
1861 | { | |
1862 | int len; | |
1863 | /* The purpose for the conditional assignment is not to | |
1864 | internationalize the directive itself, but that we need a | |
1865 | self-contained message, one that can be passed like the | |
1866 | demand_copy_C_string return value, and with no assumption on the | |
1867 | location of the name of the directive within the message. */ | |
1868 | char *msg | |
1869 | = (err ? _(".error directive invoked in source file") | |
1870 | : _(".warning directive invoked in source file")); | |
1871 | ||
1872 | if (!is_it_end_of_statement ()) | |
1873 | { | |
1874 | if (*input_line_pointer != '\"') | |
1875 | { | |
1876 | as_bad (_("%s argument must be a string"), | |
1877 | err ? ".error" : ".warning"); | |
40a4d956 | 1878 | ignore_rest_of_line (); |
d190d046 HPN |
1879 | return; |
1880 | } | |
1881 | ||
1882 | msg = demand_copy_C_string (&len); | |
1883 | if (msg == NULL) | |
1884 | return; | |
1885 | } | |
1886 | ||
1887 | if (err) | |
1888 | as_bad ("%s", msg); | |
1889 | else | |
1890 | as_warn ("%s", msg); | |
1891 | demand_empty_rest_of_line (); | |
252b5132 RH |
1892 | } |
1893 | ||
1894 | /* Handle the MRI fail pseudo-op. */ | |
1895 | ||
1896 | void | |
39e6acbd | 1897 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1898 | { |
1899 | offsetT temp; | |
1900 | char *stop = NULL; | |
fb25138b | 1901 | char stopc = 0; |
252b5132 RH |
1902 | |
1903 | if (flag_mri) | |
1904 | stop = mri_comment_field (&stopc); | |
1905 | ||
1906 | temp = get_absolute_expression (); | |
1907 | if (temp >= 500) | |
1908 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1909 | else | |
1910 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1911 | ||
1912 | demand_empty_rest_of_line (); | |
1913 | ||
1914 | if (flag_mri) | |
1915 | mri_comment_end (stop, stopc); | |
1916 | } | |
1917 | ||
041ff4dd | 1918 | void |
39e6acbd | 1919 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1920 | { |
1921 | expressionS rep_exp; | |
1922 | long size = 1; | |
3d540e93 | 1923 | long fill = 0; |
252b5132 RH |
1924 | char *p; |
1925 | ||
1926 | #ifdef md_flush_pending_output | |
1927 | md_flush_pending_output (); | |
1928 | #endif | |
1929 | ||
cc3f603a JM |
1930 | #ifdef md_cons_align |
1931 | md_cons_align (1); | |
1932 | #endif | |
1933 | ||
252b5132 RH |
1934 | get_known_segmented_expression (&rep_exp); |
1935 | if (*input_line_pointer == ',') | |
1936 | { | |
1937 | input_line_pointer++; | |
1938 | size = get_absolute_expression (); | |
1939 | if (*input_line_pointer == ',') | |
1940 | { | |
1941 | input_line_pointer++; | |
1942 | fill = get_absolute_expression (); | |
1943 | } | |
1944 | } | |
1945 | ||
1946 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1947 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1948 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1949 | { | |
0e389e77 | 1950 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
1951 | size = BSD_FILL_SIZE_CROCK_8; |
1952 | } | |
1953 | if (size < 0) | |
1954 | { | |
0e389e77 | 1955 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
1956 | size = 0; |
1957 | } | |
1958 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1959 | { | |
1960 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 1961 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
1962 | size = 0; |
1963 | } | |
1964 | ||
1965 | if (size && !need_pass_2) | |
1966 | { | |
1967 | if (rep_exp.X_op == O_constant) | |
1968 | { | |
1969 | p = frag_var (rs_fill, (int) size, (int) size, | |
1970 | (relax_substateT) 0, (symbolS *) 0, | |
1971 | (offsetT) rep_exp.X_add_number, | |
1972 | (char *) 0); | |
1973 | } | |
1974 | else | |
1975 | { | |
1976 | /* We don't have a constant repeat count, so we can't use | |
1977 | rs_fill. We can get the same results out of rs_space, | |
1978 | but its argument is in bytes, so we must multiply the | |
1979 | repeat count by size. */ | |
1980 | ||
1981 | symbolS *rep_sym; | |
1982 | rep_sym = make_expr_symbol (&rep_exp); | |
1983 | if (size != 1) | |
1984 | { | |
1985 | expressionS size_exp; | |
1986 | size_exp.X_op = O_constant; | |
1987 | size_exp.X_add_number = size; | |
1988 | ||
1989 | rep_exp.X_op = O_multiply; | |
1990 | rep_exp.X_add_symbol = rep_sym; | |
1991 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1992 | rep_exp.X_add_number = 0; | |
1993 | rep_sym = make_expr_symbol (&rep_exp); | |
1994 | } | |
1995 | ||
1996 | p = frag_var (rs_space, (int) size, (int) size, | |
1997 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1998 | } | |
f0e652b4 | 1999 | |
252b5132 | 2000 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2001 | |
252b5132 | 2002 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2003 | flavoured AS. The following bizarre behaviour is to be |
2004 | compatible with above. I guess they tried to take up to 8 | |
2005 | bytes from a 4-byte expression and they forgot to sign | |
2006 | extend. */ | |
252b5132 RH |
2007 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2008 | md_number_to_chars (p, (valueT) fill, | |
2009 | (size > BSD_FILL_SIZE_CROCK_4 | |
2010 | ? BSD_FILL_SIZE_CROCK_4 | |
2011 | : (int) size)); | |
2012 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2013 | but emits no error message because it seems a legal thing to do. |
2014 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2015 | compiler. */ |
252b5132 RH |
2016 | } |
2017 | demand_empty_rest_of_line (); | |
2018 | } | |
2019 | ||
041ff4dd | 2020 | void |
39e6acbd | 2021 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2022 | { |
2023 | char *name; | |
2024 | int c; | |
2025 | symbolS *symbolP; | |
2026 | char *stop = NULL; | |
fb25138b | 2027 | char stopc = 0; |
252b5132 RH |
2028 | |
2029 | if (flag_mri) | |
2030 | stop = mri_comment_field (&stopc); | |
2031 | ||
2032 | do | |
2033 | { | |
2034 | name = input_line_pointer; | |
2035 | c = get_symbol_end (); | |
2036 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
2037 | S_SET_EXTERNAL (symbolP); |
2038 | ||
252b5132 RH |
2039 | *input_line_pointer = c; |
2040 | SKIP_WHITESPACE (); | |
58b5739a | 2041 | c = *input_line_pointer; |
252b5132 RH |
2042 | if (c == ',') |
2043 | { | |
2044 | input_line_pointer++; | |
2045 | SKIP_WHITESPACE (); | |
0e389e77 | 2046 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2047 | c = '\n'; |
2048 | } | |
2049 | } | |
2050 | while (c == ','); | |
2051 | ||
2052 | demand_empty_rest_of_line (); | |
2053 | ||
2054 | if (flag_mri) | |
2055 | mri_comment_end (stop, stopc); | |
2056 | } | |
2057 | ||
104d59d1 JM |
2058 | #ifdef OBJ_ELF |
2059 | #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0) | |
2060 | ||
2061 | static inline int | |
2062 | skip_past_char (char ** str, char c) | |
2063 | { | |
2064 | if (**str == c) | |
2065 | { | |
2066 | (*str)++; | |
2067 | return 0; | |
2068 | } | |
2069 | else | |
2070 | return -1; | |
2071 | } | |
2072 | #define skip_past_comma(str) skip_past_char (str, ',') | |
2073 | ||
ee3c0378 AS |
2074 | /* Parse an attribute directive for VENDOR. |
2075 | Returns the attribute number read, or zero on error. */ | |
2076 | int | |
104d59d1 JM |
2077 | s_vendor_attribute (int vendor) |
2078 | { | |
2079 | expressionS exp; | |
2080 | int type; | |
2081 | int tag; | |
2082 | unsigned int i = 0; | |
2083 | char *s = NULL; | |
104d59d1 | 2084 | |
e04befd0 AS |
2085 | /* Read the first number or name. */ |
2086 | skip_whitespace (input_line_pointer); | |
2087 | s = input_line_pointer; | |
2088 | if (ISDIGIT (*input_line_pointer)) | |
2089 | { | |
2090 | expression (& exp); | |
2091 | if (exp.X_op != O_constant) | |
2092 | goto bad; | |
2093 | tag = exp.X_add_number; | |
2094 | } | |
2095 | else | |
2096 | { | |
2097 | char *name; | |
2098 | ||
2099 | /* A name may contain '_', but no other punctuation. */ | |
2100 | for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_'; | |
2101 | ++input_line_pointer) | |
2102 | i++; | |
2103 | if (i == 0) | |
2104 | goto bad; | |
2105 | ||
1e9cc1c2 | 2106 | name = (char *) alloca (i + 1); |
e04befd0 AS |
2107 | memcpy (name, s, i); |
2108 | name[i] = '\0'; | |
2109 | ||
2110 | #ifndef CONVERT_SYMBOLIC_ATTRIBUTE | |
2111 | #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1 | |
2112 | #endif | |
2113 | ||
2114 | tag = CONVERT_SYMBOLIC_ATTRIBUTE (name); | |
2115 | if (tag == -1) | |
2116 | { | |
2117 | as_bad (_("Attribute name not recognised: %s"), name); | |
2118 | ignore_rest_of_line (); | |
ee3c0378 | 2119 | return 0; |
e04befd0 AS |
2120 | } |
2121 | } | |
104d59d1 | 2122 | |
104d59d1 JM |
2123 | type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag); |
2124 | ||
2125 | if (skip_past_comma (&input_line_pointer) == -1) | |
2126 | goto bad; | |
2127 | if (type & 1) | |
2128 | { | |
2129 | expression (& exp); | |
2130 | if (exp.X_op != O_constant) | |
2131 | { | |
2132 | as_bad (_("expected numeric constant")); | |
2133 | ignore_rest_of_line (); | |
ee3c0378 | 2134 | return 0; |
104d59d1 JM |
2135 | } |
2136 | i = exp.X_add_number; | |
2137 | } | |
2d0bb761 | 2138 | if ((type & 3) == 3 |
104d59d1 JM |
2139 | && skip_past_comma (&input_line_pointer) == -1) |
2140 | { | |
2141 | as_bad (_("expected comma")); | |
2142 | ignore_rest_of_line (); | |
ee3c0378 | 2143 | return 0; |
104d59d1 JM |
2144 | } |
2145 | if (type & 2) | |
2146 | { | |
e04befd0 AS |
2147 | int len; |
2148 | ||
2149 | skip_whitespace (input_line_pointer); | |
104d59d1 JM |
2150 | if (*input_line_pointer != '"') |
2151 | goto bad_string; | |
e04befd0 | 2152 | s = demand_copy_C_string (&len); |
104d59d1 JM |
2153 | } |
2154 | ||
2d0bb761 | 2155 | switch (type & 3) |
104d59d1 JM |
2156 | { |
2157 | case 3: | |
7b86a9fa | 2158 | bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s); |
104d59d1 JM |
2159 | break; |
2160 | case 2: | |
2161 | bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s); | |
2162 | break; | |
2163 | case 1: | |
2164 | bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i); | |
2165 | break; | |
2166 | default: | |
2167 | abort (); | |
2168 | } | |
2169 | ||
104d59d1 | 2170 | demand_empty_rest_of_line (); |
ee3c0378 | 2171 | return tag; |
104d59d1 JM |
2172 | bad_string: |
2173 | as_bad (_("bad string constant")); | |
2174 | ignore_rest_of_line (); | |
ee3c0378 | 2175 | return 0; |
104d59d1 JM |
2176 | bad: |
2177 | as_bad (_("expected <tag> , <value>")); | |
2178 | ignore_rest_of_line (); | |
ee3c0378 | 2179 | return 0; |
104d59d1 JM |
2180 | } |
2181 | ||
2182 | /* Parse a .gnu_attribute directive. */ | |
2183 | ||
2184 | static void | |
2185 | s_gnu_attribute (int ignored ATTRIBUTE_UNUSED) | |
2186 | { | |
2187 | s_vendor_attribute (OBJ_ATTR_GNU); | |
2188 | } | |
2189 | #endif /* OBJ_ELF */ | |
2190 | ||
252b5132 RH |
2191 | /* Handle the MRI IRP and IRPC pseudo-ops. */ |
2192 | ||
2193 | void | |
39e6acbd | 2194 | s_irp (int irpc) |
252b5132 | 2195 | { |
40a4d956 | 2196 | char *file, *eol; |
252b5132 RH |
2197 | unsigned int line; |
2198 | sb s; | |
2199 | const char *err; | |
2200 | sb out; | |
2201 | ||
2202 | as_where (&file, &line); | |
2203 | ||
2204 | sb_new (&s); | |
40a4d956 JB |
2205 | eol = find_end_of_line (input_line_pointer, 0); |
2206 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2207 | input_line_pointer = eol; | |
252b5132 RH |
2208 | |
2209 | sb_new (&out); | |
2210 | ||
7592cfd7 | 2211 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2212 | if (err != NULL) |
2213 | as_bad_where (file, line, "%s", err); | |
2214 | ||
2215 | sb_kill (&s); | |
2216 | ||
9f10757c | 2217 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2218 | sb_kill (&out); |
2219 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2220 | } | |
2221 | ||
2222 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2223 | the section to only be linked once. However, this is not supported | |
2224 | by most object file formats. This takes an optional argument, | |
2225 | which is what to do about duplicates. */ | |
2226 | ||
2227 | void | |
39e6acbd | 2228 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2229 | { |
2230 | enum linkonce_type type; | |
2231 | ||
2232 | SKIP_WHITESPACE (); | |
2233 | ||
2234 | type = LINKONCE_DISCARD; | |
2235 | ||
041ff4dd | 2236 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2237 | { |
2238 | char *s; | |
2239 | char c; | |
2240 | ||
2241 | s = input_line_pointer; | |
2242 | c = get_symbol_end (); | |
2243 | if (strcasecmp (s, "discard") == 0) | |
2244 | type = LINKONCE_DISCARD; | |
2245 | else if (strcasecmp (s, "one_only") == 0) | |
2246 | type = LINKONCE_ONE_ONLY; | |
2247 | else if (strcasecmp (s, "same_size") == 0) | |
2248 | type = LINKONCE_SAME_SIZE; | |
2249 | else if (strcasecmp (s, "same_contents") == 0) | |
2250 | type = LINKONCE_SAME_CONTENTS; | |
2251 | else | |
2252 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2253 | ||
2254 | *input_line_pointer = c; | |
2255 | } | |
2256 | ||
2257 | #ifdef obj_handle_link_once | |
2258 | obj_handle_link_once (type); | |
2259 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2260 | { |
2261 | flagword flags; | |
2262 | ||
2263 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2264 | as_warn (_(".linkonce is not supported for this object file format")); | |
2265 | ||
2266 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2267 | flags |= SEC_LINK_ONCE; | |
2268 | switch (type) | |
2269 | { | |
2270 | default: | |
2271 | abort (); | |
2272 | case LINKONCE_DISCARD: | |
2273 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2274 | break; | |
2275 | case LINKONCE_ONE_ONLY: | |
2276 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2277 | break; | |
2278 | case LINKONCE_SAME_SIZE: | |
2279 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2280 | break; | |
2281 | case LINKONCE_SAME_CONTENTS: | |
2282 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2283 | break; | |
2284 | } | |
041ff4dd | 2285 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2286 | as_bad (_("bfd_set_section_flags: %s"), |
2287 | bfd_errmsg (bfd_get_error ())); | |
2288 | } | |
252b5132 RH |
2289 | #endif /* ! defined (obj_handle_link_once) */ |
2290 | ||
2291 | demand_empty_rest_of_line (); | |
2292 | } | |
2293 | ||
e13bab5a AM |
2294 | void |
2295 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2296 | { |
e13bab5a | 2297 | char *pfrag; |
252b5132 RH |
2298 | segT current_seg = now_seg; |
2299 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2300 | segT bss_seg = bss_section; |
2301 | ||
252b5132 RH |
2302 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2303 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2304 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2305 | { | |
2306 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2307 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2308 | { |
2309 | bss_seg = subseg_new (".sbss", 1); | |
2310 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2311 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2312 | as_warn (_("error setting flags for \".sbss\": %s"), |
2313 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2314 | } |
2315 | } | |
2316 | #endif | |
e13bab5a | 2317 | subseg_set (bss_seg, 1); |
8684e216 | 2318 | |
e13bab5a | 2319 | if (align) |
041ff4dd | 2320 | { |
e13bab5a AM |
2321 | record_alignment (bss_seg, align); |
2322 | frag_align (align, 0, 0); | |
041ff4dd | 2323 | } |
252b5132 | 2324 | |
e13bab5a AM |
2325 | /* Detach from old frag. */ |
2326 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2327 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2328 | |
e13bab5a AM |
2329 | symbol_set_frag (symbolP, frag_now); |
2330 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2331 | *pfrag = 0; | |
f0e652b4 | 2332 | |
e13bab5a AM |
2333 | #ifdef S_SET_SIZE |
2334 | S_SET_SIZE (symbolP, size); | |
2335 | #endif | |
2336 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2337 | |
e13bab5a AM |
2338 | #ifdef OBJ_COFF |
2339 | /* The symbol may already have been created with a preceding | |
2340 | ".globl" directive -- be careful not to step on storage class | |
2341 | in that case. Otherwise, set it to static. */ | |
2342 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2343 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2344 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2345 | |
e13bab5a AM |
2346 | subseg_set (current_seg, current_subseg); |
2347 | } | |
f0e652b4 | 2348 | |
e13bab5a AM |
2349 | offsetT |
2350 | parse_align (int align_bytes) | |
2351 | { | |
2352 | expressionS exp; | |
2353 | addressT align; | |
252b5132 | 2354 | |
e13bab5a AM |
2355 | SKIP_WHITESPACE (); |
2356 | if (*input_line_pointer != ',') | |
2357 | { | |
2358 | no_align: | |
2359 | as_bad (_("expected alignment after size")); | |
2360 | ignore_rest_of_line (); | |
2361 | return -1; | |
2362 | } | |
f0e652b4 | 2363 | |
e13bab5a AM |
2364 | input_line_pointer++; |
2365 | SKIP_WHITESPACE (); | |
f0e652b4 | 2366 | |
e13bab5a AM |
2367 | align = get_absolute_expr (&exp); |
2368 | if (exp.X_op == O_absent) | |
2369 | goto no_align; | |
2370 | ||
2371 | if (!exp.X_unsigned) | |
2372 | { | |
2373 | as_warn (_("alignment negative; 0 assumed")); | |
2374 | align = 0; | |
041ff4dd | 2375 | } |
e13bab5a AM |
2376 | |
2377 | if (align_bytes && align != 0) | |
252b5132 | 2378 | { |
e13bab5a AM |
2379 | /* convert to a power of 2 alignment */ |
2380 | unsigned int alignp2 = 0; | |
2381 | while ((align & 1) == 0) | |
2382 | align >>= 1, ++alignp2; | |
2383 | if (align != 1) | |
252b5132 | 2384 | { |
e13bab5a AM |
2385 | as_bad (_("alignment not a power of 2")); |
2386 | ignore_rest_of_line (); | |
2387 | return -1; | |
252b5132 | 2388 | } |
e13bab5a | 2389 | align = alignp2; |
252b5132 | 2390 | } |
e13bab5a AM |
2391 | return align; |
2392 | } | |
252b5132 | 2393 | |
e13bab5a AM |
2394 | /* Called from s_comm_internal after symbol name and size have been |
2395 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2396 | 1 if this was a ".bss" directive which has a 3rd argument | |
2397 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2398 | with alignment in bytes. */ | |
252b5132 | 2399 | |
13c56984 | 2400 | symbolS * |
e13bab5a AM |
2401 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2402 | { | |
2403 | addressT align = 0; | |
252b5132 | 2404 | |
e13bab5a AM |
2405 | if (needs_align) |
2406 | { | |
2407 | align = parse_align (needs_align - 1); | |
2408 | if (align == (addressT) -1) | |
2409 | return NULL; | |
252b5132 RH |
2410 | } |
2411 | else | |
e13bab5a AM |
2412 | /* Assume some objects may require alignment on some systems. */ |
2413 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2414 | |
e13bab5a AM |
2415 | bss_alloc (symbolP, size, align); |
2416 | return symbolP; | |
041ff4dd | 2417 | } |
252b5132 RH |
2418 | |
2419 | void | |
39e6acbd | 2420 | s_lcomm (int needs_align) |
252b5132 | 2421 | { |
e13bab5a | 2422 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2423 | } |
2424 | ||
041ff4dd | 2425 | void |
39e6acbd | 2426 | s_lcomm_bytes (int needs_align) |
252b5132 | 2427 | { |
e13bab5a | 2428 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2429 | } |
2430 | ||
041ff4dd | 2431 | void |
39e6acbd | 2432 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2433 | { |
3d540e93 NC |
2434 | char *name; |
2435 | char c; | |
2436 | char *p; | |
252b5132 | 2437 | expressionS exp; |
3d540e93 | 2438 | symbolS *symbolP; |
252b5132 | 2439 | |
041ff4dd | 2440 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2441 | name = input_line_pointer; |
2442 | c = get_symbol_end (); | |
2443 | p = input_line_pointer; | |
2444 | *p = c; | |
0e389e77 AM |
2445 | |
2446 | if (name == p) | |
2447 | { | |
2448 | as_bad (_("expected symbol name")); | |
40a4d956 | 2449 | ignore_rest_of_line (); |
0e389e77 AM |
2450 | return; |
2451 | } | |
2452 | ||
252b5132 | 2453 | SKIP_WHITESPACE (); |
f0e652b4 | 2454 | |
252b5132 RH |
2455 | if (*input_line_pointer != ',') |
2456 | { | |
2457 | *p = 0; | |
0e389e77 | 2458 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2459 | *p = c; |
2460 | ignore_rest_of_line (); | |
2461 | return; | |
2462 | } | |
f0e652b4 | 2463 | |
252b5132 | 2464 | input_line_pointer++; |
9497f5ac | 2465 | expression_and_evaluate (&exp); |
f0e652b4 | 2466 | |
252b5132 RH |
2467 | if (exp.X_op != O_constant |
2468 | && exp.X_op != O_register) | |
2469 | { | |
2470 | as_bad (_("bad expression")); | |
2471 | ignore_rest_of_line (); | |
2472 | return; | |
2473 | } | |
f0e652b4 | 2474 | |
252b5132 RH |
2475 | *p = 0; |
2476 | symbolP = symbol_find_or_make (name); | |
2477 | ||
86ebace2 | 2478 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2479 | { |
2480 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2481 | keep the "external" bit. */ |
252b5132 RH |
2482 | S_SET_SEGMENT (symbolP, |
2483 | (exp.X_op == O_constant | |
2484 | ? absolute_section | |
2485 | : reg_section)); | |
2486 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2487 | } | |
2488 | else | |
2489 | { | |
0e389e77 | 2490 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2491 | } |
f0e652b4 | 2492 | |
252b5132 RH |
2493 | *p = c; |
2494 | demand_empty_rest_of_line (); | |
041ff4dd | 2495 | } |
252b5132 | 2496 | |
0822d075 NC |
2497 | /* Read a line into an sb. Returns the character that ended the line |
2498 | or zero if there are no more lines. */ | |
252b5132 RH |
2499 | |
2500 | static int | |
7592cfd7 | 2501 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2502 | { |
40a4d956 | 2503 | char *eol; |
252b5132 RH |
2504 | |
2505 | if (input_line_pointer[-1] == '\n') | |
2506 | bump_line_counters (); | |
2507 | ||
2508 | if (input_line_pointer >= buffer_limit) | |
2509 | { | |
2510 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2511 | if (buffer_limit == 0) | |
2512 | return 0; | |
2513 | } | |
2514 | ||
7592cfd7 | 2515 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2516 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2517 | input_line_pointer = eol; | |
f0e652b4 | 2518 | |
0822d075 NC |
2519 | /* Don't skip multiple end-of-line characters, because that breaks support |
2520 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2521 | characters but isn't. Instead just skip one end of line character and | |
2522 | return the character skipped so that the caller can re-insert it if | |
2523 | necessary. */ | |
40a4d956 | 2524 | return *input_line_pointer++; |
252b5132 RH |
2525 | } |
2526 | ||
7592cfd7 NC |
2527 | static int |
2528 | get_non_macro_line_sb (sb *line) | |
2529 | { | |
2530 | return get_line_sb (line, 0); | |
2531 | } | |
2532 | ||
2533 | static int | |
2534 | get_macro_line_sb (sb *line) | |
2535 | { | |
2536 | return get_line_sb (line, 1); | |
2537 | } | |
2538 | ||
fea17916 | 2539 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2540 | |
2541 | void | |
39e6acbd | 2542 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2543 | { |
40a4d956 | 2544 | char *file, *eol; |
252b5132 RH |
2545 | unsigned int line; |
2546 | sb s; | |
252b5132 RH |
2547 | const char *err; |
2548 | const char *name; | |
2549 | ||
2550 | as_where (&file, &line); | |
2551 | ||
2552 | sb_new (&s); | |
40a4d956 JB |
2553 | eol = find_end_of_line (input_line_pointer, 0); |
2554 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2555 | input_line_pointer = eol; | |
252b5132 | 2556 | |
252b5132 | 2557 | if (line_label != NULL) |
360e86f1 JB |
2558 | { |
2559 | sb label; | |
252b5132 | 2560 | |
360e86f1 JB |
2561 | sb_new (&label); |
2562 | sb_add_string (&label, S_GET_NAME (line_label)); | |
7592cfd7 | 2563 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2564 | sb_kill (&label); |
2565 | } | |
2566 | else | |
7592cfd7 | 2567 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2568 | if (err != NULL) |
02ddf156 | 2569 | as_bad_where (file, line, err, name); |
252b5132 RH |
2570 | else |
2571 | { | |
2572 | if (line_label != NULL) | |
2573 | { | |
5e75c3ab | 2574 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2575 | S_SET_VALUE (line_label, 0); |
2b47531b | 2576 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2577 | } |
2578 | ||
abd63a32 | 2579 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2580 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2581 | || (!flag_m68k_mri |
252b5132 RH |
2582 | && *name == '.' |
2583 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2584 | as_warn_where (file, |
2585 | line, | |
2586 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2587 | name); |
2588 | } | |
2589 | ||
2590 | sb_kill (&s); | |
2591 | } | |
2592 | ||
2593 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2594 | expansion. */ | |
2595 | ||
2596 | void | |
39e6acbd | 2597 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2598 | { |
5808f4a6 NC |
2599 | if (macro_nest) |
2600 | { | |
2601 | cond_exit_macro (macro_nest); | |
2602 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2603 | } | |
2604 | else | |
2605 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2606 | } |
2607 | ||
2608 | /* Switch in and out of MRI mode. */ | |
2609 | ||
2610 | void | |
39e6acbd | 2611 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2612 | { |
3d540e93 NC |
2613 | int on; |
2614 | #ifdef MRI_MODE_CHANGE | |
2615 | int old_flag; | |
2616 | #endif | |
252b5132 RH |
2617 | |
2618 | on = get_absolute_expression (); | |
3d540e93 | 2619 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2620 | old_flag = flag_mri; |
3d540e93 | 2621 | #endif |
252b5132 RH |
2622 | if (on != 0) |
2623 | { | |
2624 | flag_mri = 1; | |
2625 | #ifdef TC_M68K | |
2626 | flag_m68k_mri = 1; | |
2627 | #endif | |
2628 | macro_mri_mode (1); | |
2629 | } | |
2630 | else | |
2631 | { | |
2632 | flag_mri = 0; | |
abd63a32 | 2633 | #ifdef TC_M68K |
252b5132 | 2634 | flag_m68k_mri = 0; |
abd63a32 | 2635 | #endif |
252b5132 RH |
2636 | macro_mri_mode (0); |
2637 | } | |
2638 | ||
2639 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2640 | update the operator rankings. */ | |
2641 | expr_set_precedence (); | |
2642 | ||
2643 | #ifdef MRI_MODE_CHANGE | |
2644 | if (on != old_flag) | |
2645 | MRI_MODE_CHANGE (on); | |
2646 | #endif | |
2647 | ||
2648 | demand_empty_rest_of_line (); | |
2649 | } | |
2650 | ||
2651 | /* Handle changing the location counter. */ | |
2652 | ||
2653 | static void | |
39e6acbd | 2654 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 RH |
2655 | { |
2656 | if (segment != now_seg && segment != absolute_section) | |
0e389e77 | 2657 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2658 | |
2659 | if (now_seg == absolute_section) | |
2660 | { | |
2661 | if (fill != 0) | |
2662 | as_warn (_("ignoring fill value in absolute section")); | |
2663 | if (exp->X_op != O_constant) | |
2664 | { | |
2665 | as_bad (_("only constant offsets supported in absolute section")); | |
2666 | exp->X_add_number = 0; | |
2667 | } | |
2668 | abs_section_offset = exp->X_add_number; | |
2669 | } | |
2670 | else | |
2671 | { | |
2672 | char *p; | |
2289f85d AM |
2673 | symbolS *sym = exp->X_add_symbol; |
2674 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2675 | |
2289f85d AM |
2676 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2677 | { | |
2678 | /* Handle complex expressions. */ | |
2679 | sym = make_expr_symbol (exp); | |
2680 | off = 0; | |
2681 | } | |
2682 | ||
2683 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2684 | *p = fill; |
2685 | } | |
2686 | } | |
2687 | ||
041ff4dd | 2688 | void |
39e6acbd | 2689 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2690 | { |
3d540e93 | 2691 | segT segment; |
252b5132 | 2692 | expressionS exp; |
3d540e93 | 2693 | long temp_fill; |
252b5132 RH |
2694 | |
2695 | #ifdef md_flush_pending_output | |
2696 | md_flush_pending_output (); | |
2697 | #endif | |
2698 | ||
2699 | /* The m68k MRI assembler has a different meaning for .org. It | |
2700 | means to create an absolute section at a given address. We can't | |
2701 | support that--use a linker script instead. */ | |
2702 | if (flag_m68k_mri) | |
2703 | { | |
2704 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2705 | ignore_rest_of_line (); | |
2706 | return; | |
2707 | } | |
2708 | ||
2709 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2710 | thing as a sub-segment-relative origin. Any absolute origin is | |
2711 | given a warning, then assumed to be segment-relative. Any | |
2712 | segmented origin expression ("foo+42") had better be in the right | |
2713 | segment or the .org is ignored. | |
2714 | ||
2715 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2716 | we never know sub-segment sizes when we are reading code. BSD | |
2717 | will crash trying to emit negative numbers of filler bytes in | |
2718 | certain .orgs. We don't crash, but see as-write for that code. | |
2719 | ||
2720 | Don't make frag if need_pass_2==1. */ | |
2721 | segment = get_known_segmented_expression (&exp); | |
2722 | if (*input_line_pointer == ',') | |
2723 | { | |
2724 | input_line_pointer++; | |
2725 | temp_fill = get_absolute_expression (); | |
2726 | } | |
2727 | else | |
2728 | temp_fill = 0; | |
2729 | ||
2730 | if (!need_pass_2) | |
2731 | do_org (segment, &exp, temp_fill); | |
2732 | ||
2733 | demand_empty_rest_of_line (); | |
041ff4dd | 2734 | } |
252b5132 RH |
2735 | |
2736 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2737 | called by the obj-format routine which handles section changing | |
2738 | when in MRI mode. It will create a new section, and return it. It | |
2739 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2740 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2741 | |
2742 | void | |
39e6acbd | 2743 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2744 | { |
2745 | #ifdef TC_M68K | |
2746 | ||
2747 | char *name; | |
2748 | char c; | |
2749 | segT seg; | |
2750 | ||
2751 | SKIP_WHITESPACE (); | |
041ff4dd | 2752 | |
252b5132 | 2753 | name = input_line_pointer; |
3882b010 | 2754 | if (!ISDIGIT (*name)) |
252b5132 RH |
2755 | c = get_symbol_end (); |
2756 | else | |
2757 | { | |
2758 | do | |
2759 | { | |
2760 | ++input_line_pointer; | |
2761 | } | |
3882b010 | 2762 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2763 | |
252b5132 RH |
2764 | c = *input_line_pointer; |
2765 | *input_line_pointer = '\0'; | |
2766 | } | |
2767 | ||
2768 | name = xstrdup (name); | |
2769 | ||
2770 | *input_line_pointer = c; | |
2771 | ||
2772 | seg = subseg_new (name, 0); | |
2773 | ||
2774 | if (*input_line_pointer == ',') | |
2775 | { | |
2776 | int align; | |
2777 | ||
2778 | ++input_line_pointer; | |
2779 | align = get_absolute_expression (); | |
2780 | record_alignment (seg, align); | |
2781 | } | |
2782 | ||
2783 | *type = 'C'; | |
2784 | if (*input_line_pointer == ',') | |
2785 | { | |
2786 | c = *++input_line_pointer; | |
3882b010 | 2787 | c = TOUPPER (c); |
252b5132 RH |
2788 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2789 | *type = c; | |
2790 | else | |
2791 | as_bad (_("unrecognized section type")); | |
2792 | ++input_line_pointer; | |
2793 | ||
252b5132 RH |
2794 | { |
2795 | flagword flags; | |
2796 | ||
2797 | flags = SEC_NO_FLAGS; | |
2798 | if (*type == 'C') | |
2799 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2800 | else if (*type == 'D' || *type == 'M') | |
2801 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2802 | else if (*type == 'R') | |
2803 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2804 | if (flags != SEC_NO_FLAGS) | |
2805 | { | |
041ff4dd | 2806 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2807 | as_warn (_("error setting flags for \"%s\": %s"), |
2808 | bfd_section_name (stdoutput, seg), | |
2809 | bfd_errmsg (bfd_get_error ())); | |
2810 | } | |
2811 | } | |
252b5132 RH |
2812 | } |
2813 | ||
2814 | /* Ignore the HP type. */ | |
2815 | if (*input_line_pointer == ',') | |
2816 | input_line_pointer += 2; | |
2817 | ||
2818 | demand_empty_rest_of_line (); | |
2819 | ||
2820 | #else /* ! TC_M68K */ | |
2821 | #ifdef TC_I960 | |
2822 | ||
2823 | char *name; | |
2824 | char c; | |
2825 | segT seg; | |
2826 | ||
2827 | SKIP_WHITESPACE (); | |
2828 | ||
2829 | name = input_line_pointer; | |
2830 | c = get_symbol_end (); | |
2831 | ||
2832 | name = xstrdup (name); | |
2833 | ||
2834 | *input_line_pointer = c; | |
2835 | ||
2836 | seg = subseg_new (name, 0); | |
2837 | ||
2838 | if (*input_line_pointer != ',') | |
2839 | *type = 'C'; | |
2840 | else | |
2841 | { | |
2842 | char *sectype; | |
2843 | ||
2844 | ++input_line_pointer; | |
2845 | SKIP_WHITESPACE (); | |
2846 | sectype = input_line_pointer; | |
2847 | c = get_symbol_end (); | |
2848 | if (*sectype == '\0') | |
2849 | *type = 'C'; | |
2850 | else if (strcasecmp (sectype, "text") == 0) | |
2851 | *type = 'C'; | |
2852 | else if (strcasecmp (sectype, "data") == 0) | |
2853 | *type = 'D'; | |
2854 | else if (strcasecmp (sectype, "romdata") == 0) | |
2855 | *type = 'R'; | |
2856 | else | |
2857 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2858 | *input_line_pointer = c; | |
2859 | } | |
2860 | ||
2861 | if (*input_line_pointer == ',') | |
2862 | { | |
2863 | char *seccmd; | |
2864 | ||
2865 | ++input_line_pointer; | |
2866 | SKIP_WHITESPACE (); | |
2867 | seccmd = input_line_pointer; | |
2868 | c = get_symbol_end (); | |
2869 | if (strcasecmp (seccmd, "absolute") == 0) | |
2870 | { | |
2871 | as_bad (_("absolute sections are not supported")); | |
2872 | *input_line_pointer = c; | |
2873 | ignore_rest_of_line (); | |
2874 | return; | |
2875 | } | |
2876 | else if (strcasecmp (seccmd, "align") == 0) | |
2877 | { | |
2878 | int align; | |
2879 | ||
2880 | *input_line_pointer = c; | |
2881 | align = get_absolute_expression (); | |
2882 | record_alignment (seg, align); | |
2883 | } | |
2884 | else | |
2885 | { | |
2886 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2887 | *input_line_pointer = c; | |
2888 | } | |
2889 | } | |
2890 | ||
041ff4dd | 2891 | demand_empty_rest_of_line (); |
252b5132 RH |
2892 | |
2893 | #else /* ! TC_I960 */ | |
2894 | /* The MRI assembler seems to use different forms of .sect for | |
2895 | different targets. */ | |
2896 | as_bad ("MRI mode not supported for this target"); | |
2897 | ignore_rest_of_line (); | |
2898 | #endif /* ! TC_I960 */ | |
2899 | #endif /* ! TC_M68K */ | |
2900 | } | |
2901 | ||
2902 | /* Handle the .print pseudo-op. */ | |
2903 | ||
2904 | void | |
39e6acbd | 2905 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2906 | { |
2907 | char *s; | |
2908 | int len; | |
2909 | ||
2910 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
2911 | if (s != NULL) |
2912 | printf ("%s\n", s); | |
252b5132 RH |
2913 | demand_empty_rest_of_line (); |
2914 | } | |
2915 | ||
2916 | /* Handle the .purgem pseudo-op. */ | |
2917 | ||
2918 | void | |
39e6acbd | 2919 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2920 | { |
2921 | if (is_it_end_of_statement ()) | |
2922 | { | |
2923 | demand_empty_rest_of_line (); | |
2924 | return; | |
2925 | } | |
2926 | ||
2927 | do | |
2928 | { | |
2929 | char *name; | |
2930 | char c; | |
2931 | ||
2932 | SKIP_WHITESPACE (); | |
2933 | name = input_line_pointer; | |
2934 | c = get_symbol_end (); | |
2935 | delete_macro (name); | |
2936 | *input_line_pointer = c; | |
2937 | SKIP_WHITESPACE (); | |
2938 | } | |
2939 | while (*input_line_pointer++ == ','); | |
2940 | ||
2941 | --input_line_pointer; | |
2942 | demand_empty_rest_of_line (); | |
2943 | } | |
2944 | ||
057f53c1 | 2945 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 2946 | |
057f53c1 JB |
2947 | static void |
2948 | s_bad_end (int endr) | |
7f28ab9d | 2949 | { |
057f53c1 JB |
2950 | as_warn (_(".end%c encountered without preceeding %s"), |
2951 | endr ? 'r' : 'm', | |
2952 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
2953 | demand_empty_rest_of_line (); |
2954 | } | |
2955 | ||
2956 | /* Handle the .rept pseudo-op. */ | |
2957 | ||
252b5132 | 2958 | void |
39e6acbd | 2959 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2960 | { |
2961 | int count; | |
252b5132 RH |
2962 | |
2963 | count = get_absolute_expression (); | |
2964 | ||
041ff4dd | 2965 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2966 | } |
2967 | ||
2968 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2969 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2970 | |
2971 | void | |
39e6acbd | 2972 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
2973 | { |
2974 | sb one; | |
2975 | sb many; | |
2976 | ||
252b5132 | 2977 | sb_new (&one); |
7592cfd7 | 2978 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 2979 | { |
6dc19fc4 | 2980 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2981 | return; |
2982 | } | |
2983 | ||
2984 | sb_new (&many); | |
2985 | while (count-- > 0) | |
2986 | sb_add_sb (&many, &one); | |
2987 | ||
2988 | sb_kill (&one); | |
2989 | ||
9f10757c | 2990 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2991 | sb_kill (&many); |
2992 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2993 | } | |
2994 | ||
c7927a3c NC |
2995 | /* Like do_repeat except that any text matching EXPANDER in the |
2996 | block is replaced by the itteration count. */ | |
2997 | ||
2998 | void | |
2999 | do_repeat_with_expander (int count, | |
3000 | const char * start, | |
3001 | const char * end, | |
3002 | const char * expander) | |
3003 | { | |
3004 | sb one; | |
3005 | sb many; | |
3006 | ||
3007 | sb_new (&one); | |
3008 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3009 | { | |
3010 | as_bad (_("%s without %s"), start, end); | |
3011 | return; | |
3012 | } | |
3013 | ||
3014 | sb_new (&many); | |
3015 | ||
3016 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3017 | { | |
3018 | while (count -- > 0) | |
3019 | { | |
3020 | int len; | |
3021 | char * sub; | |
3022 | sb processed; | |
3023 | ||
3024 | sb_new (& processed); | |
3025 | sb_add_sb (& processed, & one); | |
3026 | sub = strstr (processed.ptr, expander); | |
3027 | len = sprintf (sub, "%d", count); | |
3028 | gas_assert (len < 8); | |
3029 | strcpy (sub + len, sub + 8); | |
3030 | processed.len -= (8 - len); | |
3031 | sb_add_sb (& many, & processed); | |
3032 | sb_kill (& processed); | |
3033 | } | |
3034 | } | |
3035 | else | |
3036 | while (count-- > 0) | |
3037 | sb_add_sb (&many, &one); | |
3038 | ||
3039 | sb_kill (&one); | |
3040 | ||
3041 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3042 | sb_kill (&many); | |
3043 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3044 | } | |
3045 | ||
6dc19fc4 TW |
3046 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3047 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3048 | are properly nested. |
6dc19fc4 TW |
3049 | |
3050 | This function makes it easier to implement a premature "break" out of the | |
3051 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3052 | such as line substitutions. */ |
6dc19fc4 TW |
3053 | |
3054 | void | |
39e6acbd | 3055 | end_repeat (int extra) |
6dc19fc4 TW |
3056 | { |
3057 | cond_exit_macro (macro_nest); | |
3058 | while (extra-- >= 0) | |
3059 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3060 | } | |
3061 | ||
be95a9c1 | 3062 | static void |
9497f5ac | 3063 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3064 | { |
3065 | symbolS *symbolP; | |
3066 | ||
3067 | if (name[0] == '.' && name[1] == '\0') | |
3068 | { | |
3069 | /* Turn '. = mumble' into a .org mumble. */ | |
3070 | segT segment; | |
3071 | expressionS exp; | |
3072 | ||
3073 | segment = get_known_segmented_expression (&exp); | |
3074 | ||
3075 | if (!need_pass_2) | |
3076 | do_org (segment, &exp, 0); | |
3077 | ||
3078 | return; | |
3079 | } | |
3080 | ||
3081 | if ((symbolP = symbol_find (name)) == NULL | |
3082 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3083 | { | |
3084 | symbolP = symbol_find_or_make (name); | |
3085 | #ifndef NO_LISTING | |
3086 | /* When doing symbol listings, play games with dummy fragments living | |
3087 | outside the normal fragment chain to record the file and line info | |
3088 | for this symbol. */ | |
3089 | if (listing & LISTING_SYMBOLS) | |
3090 | { | |
3091 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 3092 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
3093 | dummy_frag->line = listing_tail; |
3094 | dummy_frag->fr_symbol = symbolP; | |
3095 | symbol_set_frag (symbolP, dummy_frag); | |
3096 | } | |
3097 | #endif | |
31d20a21 AM |
3098 | #ifdef OBJ_COFF |
3099 | /* "set" symbols are local unless otherwise specified. */ | |
3100 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3101 | #endif |
3102 | } | |
3103 | ||
6a2b6326 | 3104 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac NC |
3105 | { |
3106 | /* Permit register names to be redefined. */ | |
3107 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) | |
3108 | && S_GET_SEGMENT (symbolP) != reg_section) | |
3109 | { | |
3110 | as_bad (_("symbol `%s' is already defined"), name); | |
3111 | symbolP = symbol_clone (symbolP, 0); | |
3112 | } | |
3113 | /* If the symbol is volatile, copy the symbol and replace the | |
3114 | original with the copy, so that previous uses of the symbol will | |
3115 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3116 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3117 | symbolP = symbol_clone (symbolP, 1); |
3118 | } | |
3119 | ||
3120 | if (mode == 0) | |
3121 | S_SET_VOLATILE (symbolP); | |
3122 | else if (mode < 0) | |
3123 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3124 | |
3125 | pseudo_set (symbolP); | |
be95a9c1 AM |
3126 | } |
3127 | ||
9497f5ac NC |
3128 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3129 | then this is .equiv, and it is an error if the symbol is already | |
3130 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3131 | reference. */ | |
252b5132 | 3132 | |
041ff4dd | 3133 | void |
39e6acbd | 3134 | s_set (int equiv) |
252b5132 | 3135 | { |
be95a9c1 AM |
3136 | char *name; |
3137 | char delim; | |
3138 | char *end_name; | |
252b5132 | 3139 | |
041ff4dd NC |
3140 | /* Especial apologies for the random logic: |
3141 | this just grew, and could be parsed much more simply! | |
3142 | Dean in haste. */ | |
252b5132 RH |
3143 | name = input_line_pointer; |
3144 | delim = get_symbol_end (); | |
3145 | end_name = input_line_pointer; | |
0e389e77 | 3146 | *end_name = delim; |
409d19c4 | 3147 | |
0e389e77 | 3148 | if (name == end_name) |
409d19c4 AM |
3149 | { |
3150 | as_bad (_("expected symbol name")); | |
40a4d956 | 3151 | ignore_rest_of_line (); |
409d19c4 AM |
3152 | return; |
3153 | } | |
3154 | ||
252b5132 RH |
3155 | SKIP_WHITESPACE (); |
3156 | ||
3157 | if (*input_line_pointer != ',') | |
3158 | { | |
3159 | *end_name = 0; | |
0e389e77 | 3160 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
3161 | *end_name = delim; |
3162 | ignore_rest_of_line (); | |
3163 | return; | |
3164 | } | |
3165 | ||
3166 | input_line_pointer++; | |
3167 | *end_name = 0; | |
3168 | ||
be95a9c1 | 3169 | assign_symbol (name, equiv); |
252b5132 | 3170 | *end_name = delim; |
31d20a21 AM |
3171 | |
3172 | demand_empty_rest_of_line (); | |
041ff4dd | 3173 | } |
252b5132 | 3174 | |
041ff4dd | 3175 | void |
39e6acbd | 3176 | s_space (int mult) |
252b5132 RH |
3177 | { |
3178 | expressionS exp; | |
3179 | expressionS val; | |
3180 | char *p = 0; | |
3181 | char *stop = NULL; | |
fb25138b | 3182 | char stopc = 0; |
252b5132 RH |
3183 | int bytes; |
3184 | ||
3185 | #ifdef md_flush_pending_output | |
3186 | md_flush_pending_output (); | |
3187 | #endif | |
3188 | ||
cc3f603a JM |
3189 | #ifdef md_cons_align |
3190 | md_cons_align (1); | |
3191 | #endif | |
3192 | ||
252b5132 RH |
3193 | if (flag_mri) |
3194 | stop = mri_comment_field (&stopc); | |
3195 | ||
3196 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3197 | this is ds.b. */ | |
3198 | if (flag_m68k_mri && mult > 1) | |
3199 | { | |
3200 | if (now_seg == absolute_section) | |
3201 | { | |
3202 | abs_section_offset += abs_section_offset & 1; | |
3203 | if (line_label != NULL) | |
3204 | S_SET_VALUE (line_label, abs_section_offset); | |
3205 | } | |
3206 | else if (mri_common_symbol != NULL) | |
3207 | { | |
91d6fa6a | 3208 | valueT mri_val; |
252b5132 | 3209 | |
91d6fa6a NC |
3210 | mri_val = S_GET_VALUE (mri_common_symbol); |
3211 | if ((mri_val & 1) != 0) | |
252b5132 | 3212 | { |
91d6fa6a | 3213 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3214 | if (line_label != NULL) |
3215 | { | |
2b47531b ILT |
3216 | expressionS *symexp; |
3217 | ||
3218 | symexp = symbol_get_value_expression (line_label); | |
3219 | know (symexp->X_op == O_symbol); | |
3220 | know (symexp->X_add_symbol == mri_common_symbol); | |
3221 | symexp->X_add_number += 1; | |
252b5132 RH |
3222 | } |
3223 | } | |
3224 | } | |
3225 | else | |
3226 | { | |
3227 | do_align (1, (char *) NULL, 0, 0); | |
3228 | if (line_label != NULL) | |
3229 | { | |
2b47531b | 3230 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3231 | S_SET_VALUE (line_label, frag_now_fix ()); |
3232 | } | |
3233 | } | |
3234 | } | |
3235 | ||
3236 | bytes = mult; | |
3237 | ||
3238 | expression (&exp); | |
3239 | ||
3240 | SKIP_WHITESPACE (); | |
3241 | if (*input_line_pointer == ',') | |
3242 | { | |
3243 | ++input_line_pointer; | |
3244 | expression (&val); | |
3245 | } | |
3246 | else | |
3247 | { | |
3248 | val.X_op = O_constant; | |
3249 | val.X_add_number = 0; | |
3250 | } | |
3251 | ||
3252 | if (val.X_op != O_constant | |
3253 | || val.X_add_number < - 0x80 | |
3254 | || val.X_add_number > 0xff | |
3255 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3256 | { | |
9497f5ac | 3257 | resolve_expression (&exp); |
252b5132 | 3258 | if (exp.X_op != O_constant) |
0e389e77 | 3259 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3260 | else |
3261 | { | |
3262 | offsetT i; | |
3263 | ||
3264 | if (mult == 0) | |
3265 | mult = 1; | |
3266 | bytes = mult * exp.X_add_number; | |
3267 | for (i = 0; i < exp.X_add_number; i++) | |
3268 | emit_expr (&val, mult); | |
3269 | } | |
3270 | } | |
3271 | else | |
3272 | { | |
9497f5ac NC |
3273 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3274 | resolve_expression (&exp); | |
3275 | ||
252b5132 RH |
3276 | if (exp.X_op == O_constant) |
3277 | { | |
a4a151e6 | 3278 | offsetT repeat; |
252b5132 RH |
3279 | |
3280 | repeat = exp.X_add_number; | |
3281 | if (mult) | |
3282 | repeat *= mult; | |
3283 | bytes = repeat; | |
3284 | if (repeat <= 0) | |
3285 | { | |
2d150871 RO |
3286 | if (!flag_mri) |
3287 | as_warn (_(".space repeat count is zero, ignored")); | |
3288 | else if (repeat < 0) | |
252b5132 RH |
3289 | as_warn (_(".space repeat count is negative, ignored")); |
3290 | goto getout; | |
3291 | } | |
3292 | ||
3293 | /* If we are in the absolute section, just bump the offset. */ | |
3294 | if (now_seg == absolute_section) | |
3295 | { | |
3296 | abs_section_offset += repeat; | |
3297 | goto getout; | |
3298 | } | |
3299 | ||
3300 | /* If we are secretly in an MRI common section, then | |
3301 | creating space just increases the size of the common | |
3302 | symbol. */ | |
3303 | if (mri_common_symbol != NULL) | |
3304 | { | |
3305 | S_SET_VALUE (mri_common_symbol, | |
3306 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3307 | goto getout; | |
3308 | } | |
3309 | ||
3310 | if (!need_pass_2) | |
3311 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3312 | (offsetT) repeat, (char *) 0); | |
3313 | } | |
3314 | else | |
3315 | { | |
3316 | if (now_seg == absolute_section) | |
3317 | { | |
3318 | as_bad (_("space allocation too complex in absolute section")); | |
3319 | subseg_set (text_section, 0); | |
3320 | } | |
f0e652b4 | 3321 | |
252b5132 RH |
3322 | if (mri_common_symbol != NULL) |
3323 | { | |
3324 | as_bad (_("space allocation too complex in common section")); | |
3325 | mri_common_symbol = NULL; | |
3326 | } | |
f0e652b4 | 3327 | |
252b5132 RH |
3328 | if (!need_pass_2) |
3329 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3330 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3331 | } | |
3332 | ||
3333 | if (p) | |
3334 | *p = val.X_add_number; | |
3335 | } | |
3336 | ||
3337 | getout: | |
3338 | ||
3339 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3340 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3341 | or dcb.b. */ | |
3342 | if (flag_mri && (bytes & 1) != 0) | |
3343 | mri_pending_align = 1; | |
3344 | ||
3345 | demand_empty_rest_of_line (); | |
3346 | ||
3347 | if (flag_mri) | |
3348 | mri_comment_end (stop, stopc); | |
3349 | } | |
3350 | ||
3351 | /* This is like s_space, but the value is a floating point number with | |
3352 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3353 | friends. */ | |
3354 | ||
3355 | void | |
39e6acbd | 3356 | s_float_space (int float_type) |
252b5132 RH |
3357 | { |
3358 | offsetT count; | |
3359 | int flen; | |
3360 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3361 | char *stop = NULL; | |
fb25138b | 3362 | char stopc = 0; |
252b5132 | 3363 | |
cc3f603a JM |
3364 | #ifdef md_cons_align |
3365 | md_cons_align (1); | |
3366 | #endif | |
3367 | ||
252b5132 RH |
3368 | if (flag_mri) |
3369 | stop = mri_comment_field (&stopc); | |
3370 | ||
3371 | count = get_absolute_expression (); | |
3372 | ||
3373 | SKIP_WHITESPACE (); | |
3374 | if (*input_line_pointer != ',') | |
3375 | { | |
3376 | as_bad (_("missing value")); | |
3377 | ignore_rest_of_line (); | |
3378 | if (flag_mri) | |
3379 | mri_comment_end (stop, stopc); | |
3380 | return; | |
3381 | } | |
3382 | ||
3383 | ++input_line_pointer; | |
3384 | ||
3385 | SKIP_WHITESPACE (); | |
3386 | ||
3387 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3388 | * letter is legal. */ | |
3389 | if (input_line_pointer[0] == '0' | |
3882b010 | 3390 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3391 | input_line_pointer += 2; |
3392 | ||
3393 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3394 | with the exact digits specified. */ | |
3395 | if (input_line_pointer[0] == ':') | |
3396 | { | |
3397 | flen = hex_float (float_type, temp); | |
3398 | if (flen < 0) | |
3399 | { | |
3400 | ignore_rest_of_line (); | |
3401 | if (flag_mri) | |
3402 | mri_comment_end (stop, stopc); | |
3403 | return; | |
3404 | } | |
3405 | } | |
3406 | else | |
3407 | { | |
3408 | char *err; | |
3409 | ||
3410 | err = md_atof (float_type, temp, &flen); | |
3411 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3412 | know (err != NULL || flen > 0); |
252b5132 RH |
3413 | if (err) |
3414 | { | |
0e389e77 | 3415 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3416 | ignore_rest_of_line (); |
3417 | if (flag_mri) | |
3418 | mri_comment_end (stop, stopc); | |
3419 | return; | |
3420 | } | |
3421 | } | |
3422 | ||
3423 | while (--count >= 0) | |
3424 | { | |
3425 | char *p; | |
3426 | ||
3427 | p = frag_more (flen); | |
3428 | memcpy (p, temp, (unsigned int) flen); | |
3429 | } | |
3430 | ||
3431 | demand_empty_rest_of_line (); | |
3432 | ||
3433 | if (flag_mri) | |
3434 | mri_comment_end (stop, stopc); | |
3435 | } | |
3436 | ||
3437 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3438 | ||
3439 | void | |
39e6acbd | 3440 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3441 | { |
3442 | char *stop = NULL; | |
fb25138b | 3443 | char stopc = 0; |
252b5132 RH |
3444 | |
3445 | if (flag_mri) | |
3446 | stop = mri_comment_field (&stopc); | |
3447 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3448 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3449 | /* The ELF backend needs to know that we are changing sections, so | |
3450 | that .previous works correctly. */ | |
f43abd2b | 3451 | if (IS_ELF) |
a2902af6 TS |
3452 | obj_elf_section_change_hook (); |
3453 | #endif | |
252b5132 RH |
3454 | subseg_set (absolute_section, 0); |
3455 | demand_empty_rest_of_line (); | |
3456 | if (flag_mri) | |
3457 | mri_comment_end (stop, stopc); | |
3458 | } | |
3459 | ||
3460 | void | |
39e6acbd | 3461 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3462 | { |
3d540e93 | 3463 | int temp; |
252b5132 RH |
3464 | |
3465 | temp = get_absolute_expression (); | |
3466 | subseg_set (text_section, (subsegT) temp); | |
3467 | demand_empty_rest_of_line (); | |
3468 | #ifdef OBJ_VMS | |
3469 | const_flag &= ~IN_DEFAULT_SECTION; | |
3470 | #endif | |
041ff4dd | 3471 | } |
06e77878 AO |
3472 | |
3473 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3474 | referenced directly, will cause y to become a weak symbol. */ | |
3475 | void | |
3476 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3477 | { | |
3478 | char *name; | |
3479 | char delim; | |
3480 | char *end_name; | |
3481 | symbolS *symbolP; | |
3482 | symbolS *symbolP2; | |
3483 | expressionS exp; | |
3484 | ||
3485 | name = input_line_pointer; | |
3486 | delim = get_symbol_end (); | |
3487 | end_name = input_line_pointer; | |
3488 | ||
3489 | if (name == end_name) | |
3490 | { | |
3491 | as_bad (_("expected symbol name")); | |
3492 | *end_name = delim; | |
3493 | ignore_rest_of_line (); | |
3494 | return; | |
3495 | } | |
3496 | ||
3497 | symbolP = symbol_find_or_make (name); | |
3498 | ||
b54788f8 AO |
3499 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3500 | { | |
89cdfe57 | 3501 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3502 | { |
3503 | as_bad (_("symbol `%s' is already defined"), name); | |
3504 | *end_name = delim; | |
3505 | ignore_rest_of_line (); | |
3506 | return; | |
3507 | } | |
89cdfe57 | 3508 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3509 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3510 | } |
3511 | ||
06e77878 AO |
3512 | *end_name = delim; |
3513 | ||
3514 | SKIP_WHITESPACE (); | |
3515 | ||
3516 | if (*input_line_pointer != ',') | |
3517 | { | |
3518 | *end_name = 0; | |
3519 | as_bad (_("expected comma after \"%s\""), name); | |
3520 | *end_name = delim; | |
3521 | ignore_rest_of_line (); | |
3522 | return; | |
3523 | } | |
3524 | ||
3525 | input_line_pointer++; | |
3526 | ||
3527 | SKIP_WHITESPACE (); | |
3528 | ||
3529 | name = input_line_pointer; | |
3530 | delim = get_symbol_end (); | |
3531 | end_name = input_line_pointer; | |
3532 | ||
3533 | if (name == end_name) | |
3534 | { | |
3535 | as_bad (_("expected symbol name")); | |
3536 | ignore_rest_of_line (); | |
3537 | return; | |
3538 | } | |
3539 | ||
3540 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3541 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3542 | { | |
3543 | symbolP2 = symbol_find_or_make (name); | |
3544 | S_SET_WEAKREFD (symbolP2); | |
3545 | } | |
3546 | else | |
3547 | { | |
3548 | symbolS *symp = symbolP2; | |
3549 | ||
3550 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3551 | { | |
3552 | expressionS *expP = symbol_get_value_expression (symp); | |
3553 | ||
9c2799c2 | 3554 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3555 | && expP->X_add_number == 0); |
3556 | symp = expP->X_add_symbol; | |
3557 | } | |
3558 | if (symp == symbolP) | |
3559 | { | |
3560 | char *loop; | |
3561 | ||
3562 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3563 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3564 | |
3565 | symp = symbolP2; | |
3566 | while (symp != symbolP) | |
3567 | { | |
3568 | char *old_loop = loop; | |
3569 | symp = symbol_get_value_expression (symp)->X_add_symbol; | |
1bf57e9f AM |
3570 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3571 | (const char *) NULL); | |
06e77878 AO |
3572 | free (old_loop); |
3573 | } | |
3574 | ||
3575 | as_bad (_("%s: would close weakref loop: %s"), | |
3576 | S_GET_NAME (symbolP), loop); | |
3577 | ||
3578 | free (loop); | |
3579 | ||
3580 | *end_name = delim; | |
3581 | ignore_rest_of_line (); | |
3582 | return; | |
3583 | } | |
3584 | ||
3585 | /* Short-circuiting instead of just checking here might speed | |
3586 | things up a tiny little bit, but loop error messages would | |
3587 | miss intermediate links. */ | |
3588 | /* symbolP2 = symp; */ | |
3589 | } | |
3590 | ||
3591 | *end_name = delim; | |
3592 | ||
3593 | memset (&exp, 0, sizeof (exp)); | |
3594 | exp.X_op = O_symbol; | |
3595 | exp.X_add_symbol = symbolP2; | |
3596 | ||
3597 | S_SET_SEGMENT (symbolP, undefined_section); | |
3598 | symbol_set_value_expression (symbolP, &exp); | |
3599 | symbol_set_frag (symbolP, &zero_address_frag); | |
3600 | S_SET_WEAKREFR (symbolP); | |
3601 | ||
3602 | demand_empty_rest_of_line (); | |
3603 | } | |
252b5132 | 3604 | \f |
c95b35a9 NS |
3605 | |
3606 | /* Verify that we are at the end of a line. If not, issue an error and | |
3607 | skip to EOL. */ | |
3608 | ||
041ff4dd | 3609 | void |
39e6acbd | 3610 | demand_empty_rest_of_line (void) |
252b5132 RH |
3611 | { |
3612 | SKIP_WHITESPACE (); | |
3613 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3614 | input_line_pointer++; |
252b5132 | 3615 | else |
252b5132 | 3616 | { |
3882b010 | 3617 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3618 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3619 | *input_line_pointer); |
252b5132 | 3620 | else |
c95b35a9 | 3621 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3622 | *input_line_pointer); |
c95b35a9 | 3623 | ignore_rest_of_line (); |
252b5132 | 3624 | } |
c95b35a9 NS |
3625 | |
3626 | /* Return pointing just after end-of-line. */ | |
3627 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3628 | } | |
3629 | ||
3630 | /* Silently advance to the end of line. Use this after already having | |
3631 | issued an error about something bad. */ | |
3632 | ||
3633 | void | |
3634 | ignore_rest_of_line (void) | |
3635 | { | |
3636 | while (input_line_pointer < buffer_limit | |
3637 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3638 | input_line_pointer++; | |
f0e652b4 | 3639 | |
041ff4dd NC |
3640 | input_line_pointer++; |
3641 | ||
3642 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3643 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3644 | } | |
3645 | ||
be95a9c1 AM |
3646 | /* Sets frag for given symbol to zero_address_frag, except when the |
3647 | symbol frag is already set to a dummy listing frag. */ | |
3648 | ||
3649 | static void | |
3650 | set_zero_frag (symbolS *symbolP) | |
3651 | { | |
3652 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3653 | symbol_set_frag (symbolP, &zero_address_frag); | |
3654 | } | |
3655 | ||
041ff4dd | 3656 | /* In: Pointer to a symbol. |
d6415f6c | 3657 | Input_line_pointer->expression. |
f0e652b4 | 3658 | |
041ff4dd | 3659 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3660 | Tried to set symbol to value of expression. |
3661 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3662 | |
252b5132 | 3663 | void |
39e6acbd | 3664 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3665 | { |
3666 | expressionS exp; | |
be95a9c1 | 3667 | segT seg; |
252b5132 | 3668 | |
041ff4dd | 3669 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3670 | |
9497f5ac NC |
3671 | if (!S_IS_FORWARD_REF (symbolP)) |
3672 | (void) expression (&exp); | |
3673 | else | |
3674 | (void) deferred_expression (&exp); | |
252b5132 RH |
3675 | |
3676 | if (exp.X_op == O_illegal) | |
0e389e77 | 3677 | as_bad (_("illegal expression")); |
252b5132 | 3678 | else if (exp.X_op == O_absent) |
0e389e77 | 3679 | as_bad (_("missing expression")); |
252b5132 RH |
3680 | else if (exp.X_op == O_big) |
3681 | { | |
3682 | if (exp.X_add_number > 0) | |
0e389e77 | 3683 | as_bad (_("bignum invalid")); |
252b5132 | 3684 | else |
0e389e77 | 3685 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3686 | } |
3687 | else if (exp.X_op == O_subtract | |
9497f5ac | 3688 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3689 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3690 | && (symbol_get_frag (exp.X_add_symbol) |
3691 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3692 | { |
3693 | exp.X_op = O_constant; | |
3694 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3695 | - S_GET_VALUE (exp.X_op_symbol)); | |
3696 | } | |
3697 | ||
be95a9c1 AM |
3698 | if (symbol_section_p (symbolP)) |
3699 | { | |
3700 | as_bad ("attempt to set value of section symbol"); | |
3701 | return; | |
3702 | } | |
be95a9c1 | 3703 | |
252b5132 RH |
3704 | switch (exp.X_op) |
3705 | { | |
3706 | case O_illegal: | |
3707 | case O_absent: | |
3708 | case O_big: | |
3709 | exp.X_add_number = 0; | |
3710 | /* Fall through. */ | |
3711 | case O_constant: | |
3712 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3713 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3714 | set_zero_frag (symbolP); |
252b5132 RH |
3715 | break; |
3716 | ||
3717 | case O_register: | |
97c4f2d9 | 3718 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3719 | if (S_IS_EXTERNAL (symbolP)) |
3720 | { | |
3721 | as_bad ("can't equate global symbol `%s' with register name", | |
3722 | S_GET_NAME (symbolP)); | |
3723 | return; | |
3724 | } | |
97c4f2d9 | 3725 | #endif |
252b5132 RH |
3726 | S_SET_SEGMENT (symbolP, reg_section); |
3727 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3728 | set_zero_frag (symbolP); |
db557034 | 3729 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3730 | break; |
3731 | ||
3732 | case O_symbol: | |
be95a9c1 AM |
3733 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3734 | /* For x=undef+const, create an expression symbol. | |
3735 | For x=x+const, just update x except when x is an undefined symbol | |
3736 | For x=defined+const, evaluate x. */ | |
3737 | if (symbolP == exp.X_add_symbol | |
3738 | && (seg != undefined_section | |
3739 | || !symbol_constant_p (symbolP))) | |
3740 | { | |
3741 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3742 | break; | |
3743 | } | |
9497f5ac | 3744 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3745 | { |
3746 | symbolS *s = exp.X_add_symbol; | |
3747 | ||
60938e80 L |
3748 | if (S_IS_COMMON (s)) |
3749 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3750 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3751 | ||
be95a9c1 AM |
3752 | S_SET_SEGMENT (symbolP, seg); |
3753 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3754 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3755 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3756 | break; |
252b5132 | 3757 | } |
66bd02d3 AM |
3758 | S_SET_SEGMENT (symbolP, undefined_section); |
3759 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 3760 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
3761 | set_zero_frag (symbolP); |
3762 | break; | |
252b5132 RH |
3763 | |
3764 | default: | |
aba4aa7d AM |
3765 | /* The value is some complex expression. */ |
3766 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3767 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3768 | set_zero_frag (symbolP); |
252b5132 RH |
3769 | break; |
3770 | } | |
3771 | } | |
3772 | \f | |
d6415f6c | 3773 | /* cons() |
f0e652b4 | 3774 | |
041ff4dd NC |
3775 | CONStruct more frag of .bytes, or .words etc. |
3776 | Should need_pass_2 be 1 then emit no frag(s). | |
3777 | This understands EXPRESSIONS. | |
f0e652b4 | 3778 | |
041ff4dd | 3779 | Bug (?) |
f0e652b4 | 3780 | |
041ff4dd NC |
3781 | This has a split personality. We use expression() to read the |
3782 | value. We can detect if the value won't fit in a byte or word. | |
3783 | But we can't detect if expression() discarded significant digits | |
3784 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3785 | |
3786 | /* Select a parser for cons expressions. */ | |
3787 | ||
3788 | /* Some targets need to parse the expression in various fancy ways. | |
3789 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3790 | (for example, the HPPA does this). Otherwise, you can define | |
3791 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3792 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3793 | are defined, which is the normal case, then only simple expressions | |
3794 | are permitted. */ | |
3795 | ||
abd63a32 | 3796 | #ifdef TC_M68K |
252b5132 | 3797 | static void |
39e6acbd | 3798 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3799 | #endif |
252b5132 RH |
3800 | |
3801 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3802 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3803 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3804 | static void |
39e6acbd | 3805 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3806 | #endif |
3807 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3808 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3809 | static void | |
39e6acbd | 3810 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3811 | #endif |
3812 | ||
3813 | /* If we haven't gotten one yet, just call expression. */ | |
3814 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3815 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3816 | #endif | |
3817 | #endif | |
3818 | ||
cdfbf930 | 3819 | void |
b41b1f95 L |
3820 | do_parse_cons_expression (expressionS *exp, |
3821 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3822 | { |
3823 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3824 | } | |
3825 | ||
3826 | ||
041ff4dd NC |
3827 | /* Worker to do .byte etc statements. |
3828 | Clobbers input_line_pointer and checks end-of-line. */ | |
3829 | ||
3830 | static void | |
3d540e93 | 3831 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 3832 | int rva) |
252b5132 RH |
3833 | { |
3834 | int c; | |
3835 | expressionS exp; | |
3836 | char *stop = NULL; | |
fb25138b | 3837 | char stopc = 0; |
252b5132 RH |
3838 | |
3839 | #ifdef md_flush_pending_output | |
3840 | md_flush_pending_output (); | |
3841 | #endif | |
3842 | ||
3843 | if (flag_mri) | |
3844 | stop = mri_comment_field (&stopc); | |
3845 | ||
3846 | if (is_it_end_of_statement ()) | |
3847 | { | |
3848 | demand_empty_rest_of_line (); | |
3849 | if (flag_mri) | |
3850 | mri_comment_end (stop, stopc); | |
3851 | return; | |
3852 | } | |
3853 | ||
cc1bc22a AM |
3854 | #ifdef TC_ADDRESS_BYTES |
3855 | if (nbytes == 0) | |
3856 | nbytes = TC_ADDRESS_BYTES (); | |
3857 | #endif | |
3858 | ||
252b5132 RH |
3859 | #ifdef md_cons_align |
3860 | md_cons_align (nbytes); | |
3861 | #endif | |
3862 | ||
3863 | c = 0; | |
3864 | do | |
3865 | { | |
abd63a32 | 3866 | #ifdef TC_M68K |
252b5132 RH |
3867 | if (flag_m68k_mri) |
3868 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3869 | else | |
abd63a32 | 3870 | #endif |
847d4311 NS |
3871 | { |
3872 | if (*input_line_pointer == '"') | |
3873 | { | |
3874 | as_bad (_("unexpected `\"' in expression")); | |
3875 | ignore_rest_of_line (); | |
3876 | return; | |
3877 | } | |
3878 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); | |
3879 | } | |
252b5132 RH |
3880 | |
3881 | if (rva) | |
3882 | { | |
3883 | if (exp.X_op == O_symbol) | |
3884 | exp.X_op = O_symbol_rva; | |
3885 | else | |
3886 | as_fatal (_("rva without symbol")); | |
3887 | } | |
3888 | emit_expr (&exp, (unsigned int) nbytes); | |
3889 | ++c; | |
3890 | } | |
3891 | while (*input_line_pointer++ == ','); | |
3892 | ||
3893 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3894 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3895 | or dcb.b. */ | |
3896 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3897 | mri_pending_align = 1; | |
3898 | ||
041ff4dd | 3899 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3900 | |
3901 | demand_empty_rest_of_line (); | |
3902 | ||
3903 | if (flag_mri) | |
3904 | mri_comment_end (stop, stopc); | |
3905 | } | |
3906 | ||
252b5132 | 3907 | void |
39e6acbd | 3908 | cons (int size) |
252b5132 RH |
3909 | { |
3910 | cons_worker (size, 0); | |
3911 | } | |
3912 | ||
041ff4dd | 3913 | void |
39e6acbd | 3914 | s_rva (int size) |
252b5132 RH |
3915 | { |
3916 | cons_worker (size, 1); | |
3917 | } | |
3918 | ||
05e9452c AM |
3919 | /* .reloc offset, reloc_name, symbol+addend. */ |
3920 | ||
3921 | void | |
3922 | s_reloc (int ignore ATTRIBUTE_UNUSED) | |
3923 | { | |
3924 | char *stop = NULL; | |
3925 | char stopc = 0; | |
3926 | expressionS exp; | |
3927 | char *r_name; | |
3928 | int c; | |
3929 | struct reloc_list *reloc; | |
3930 | ||
1e9cc1c2 | 3931 | reloc = (struct reloc_list *) xmalloc (sizeof (*reloc)); |
05e9452c AM |
3932 | |
3933 | if (flag_mri) | |
3934 | stop = mri_comment_field (&stopc); | |
3935 | ||
3936 | expression (&exp); | |
3937 | switch (exp.X_op) | |
3938 | { | |
3939 | case O_illegal: | |
3940 | case O_absent: | |
3941 | case O_big: | |
3942 | case O_register: | |
3943 | as_bad (_("missing or bad offset expression")); | |
3944 | goto err_out; | |
3945 | case O_constant: | |
3946 | exp.X_add_symbol = section_symbol (now_seg); | |
3947 | exp.X_op = O_symbol; | |
3948 | /* Fall thru */ | |
3949 | case O_symbol: | |
3950 | if (exp.X_add_number == 0) | |
3951 | { | |
3952 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
3953 | break; | |
3954 | } | |
3955 | /* Fall thru */ | |
3956 | default: | |
3957 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
3958 | break; | |
3959 | } | |
3960 | ||
3961 | SKIP_WHITESPACE (); | |
3962 | if (*input_line_pointer != ',') | |
3963 | { | |
3964 | as_bad (_("missing reloc type")); | |
3965 | goto err_out; | |
3966 | } | |
3967 | ||
3968 | ++input_line_pointer; | |
3969 | SKIP_WHITESPACE (); | |
3970 | r_name = input_line_pointer; | |
3971 | c = get_symbol_end (); | |
3972 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
3973 | *input_line_pointer = c; | |
3974 | if (reloc->u.a.howto == NULL) | |
3975 | { | |
3976 | as_bad (_("unrecognized reloc type")); | |
3977 | goto err_out; | |
3978 | } | |
3979 | ||
3980 | exp.X_op = O_absent; | |
3981 | SKIP_WHITESPACE (); | |
3982 | if (*input_line_pointer == ',') | |
3983 | { | |
3984 | ++input_line_pointer; | |
c188d0bb | 3985 | expression (&exp); |
05e9452c AM |
3986 | } |
3987 | switch (exp.X_op) | |
3988 | { | |
3989 | case O_illegal: | |
3990 | case O_big: | |
3991 | case O_register: | |
3992 | as_bad (_("bad reloc expression")); | |
3993 | err_out: | |
3994 | ignore_rest_of_line (); | |
3995 | free (reloc); | |
3996 | if (flag_mri) | |
3997 | mri_comment_end (stop, stopc); | |
3998 | return; | |
3999 | case O_absent: | |
4000 | reloc->u.a.sym = NULL; | |
4001 | reloc->u.a.addend = 0; | |
4002 | break; | |
4003 | case O_constant: | |
4004 | reloc->u.a.sym = NULL; | |
4005 | reloc->u.a.addend = exp.X_add_number; | |
4006 | break; | |
4007 | case O_symbol: | |
4008 | reloc->u.a.sym = exp.X_add_symbol; | |
4009 | reloc->u.a.addend = exp.X_add_number; | |
4010 | break; | |
4011 | default: | |
4012 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4013 | reloc->u.a.addend = 0; | |
4014 | break; | |
4015 | } | |
4016 | ||
4017 | as_where (&reloc->file, &reloc->line); | |
4018 | reloc->next = reloc_list; | |
4019 | reloc_list = reloc; | |
4020 | ||
4021 | demand_empty_rest_of_line (); | |
4022 | if (flag_mri) | |
4023 | mri_comment_end (stop, stopc); | |
4024 | } | |
4025 | ||
252b5132 RH |
4026 | /* Put the contents of expression EXP into the object file using |
4027 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4028 | ||
4029 | void | |
39e6acbd | 4030 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4031 | { |
4032 | operatorT op; | |
3d540e93 | 4033 | char *p; |
252b5132 RH |
4034 | valueT extra_digit = 0; |
4035 | ||
4036 | /* Don't do anything if we are going to make another pass. */ | |
4037 | if (need_pass_2) | |
4038 | return; | |
4039 | ||
4bc25101 NC |
4040 | /* Grow the current frag now so that dot_value does not get invalidated |
4041 | if the frag were to fill up in the frag_more() call below. */ | |
4042 | frag_grow (nbytes); | |
ed7d5d1a AM |
4043 | dot_value = frag_now_fix (); |
4044 | ||
252b5132 RH |
4045 | #ifndef NO_LISTING |
4046 | #ifdef OBJ_ELF | |
4047 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4048 | appear as a four byte positive constant in the .line section, | |
4049 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4050 | { | |
4051 | static int dwarf_line = -1; | |
4052 | ||
4053 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4054 | dwarf_line = -1; | |
4055 | else if (dwarf_line >= 0 | |
4056 | && nbytes == 2 | |
4057 | && exp->X_op == O_constant | |
4058 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4059 | listing_source_line ((unsigned int) dwarf_line); | |
4060 | else if (nbytes == 4 | |
4061 | && exp->X_op == O_constant | |
4062 | && exp->X_add_number >= 0) | |
4063 | dwarf_line = exp->X_add_number; | |
4064 | else | |
4065 | dwarf_line = -1; | |
4066 | } | |
4067 | ||
4068 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4069 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4070 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4071 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4072 | file. We look for that case here. */ | |
4073 | { | |
4074 | static int dwarf_file = 0; | |
4075 | ||
4076 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4077 | dwarf_file = 0; | |
4078 | else if (dwarf_file == 0 | |
4079 | && nbytes == 2 | |
4080 | && exp->X_op == O_constant | |
4081 | && exp->X_add_number == 0x11) | |
4082 | dwarf_file = 1; | |
4083 | else if (dwarf_file == 1 | |
4084 | && nbytes == 2 | |
4085 | && exp->X_op == O_constant | |
4086 | && exp->X_add_number == 0x12) | |
4087 | dwarf_file = 2; | |
4088 | else if (dwarf_file == 2 | |
4089 | && nbytes == 4) | |
4090 | dwarf_file = 3; | |
4091 | else if (dwarf_file == 3 | |
4092 | && nbytes == 2 | |
4093 | && exp->X_op == O_constant | |
4094 | && exp->X_add_number == 0x38) | |
4095 | dwarf_file = 4; | |
4096 | else | |
4097 | dwarf_file = 0; | |
4098 | ||
4099 | /* The variable dwarf_file_string tells stringer that the string | |
4100 | may be the name of the source file. */ | |
4101 | if (dwarf_file == 4) | |
4102 | dwarf_file_string = 1; | |
4103 | else | |
4104 | dwarf_file_string = 0; | |
4105 | } | |
4106 | #endif | |
4107 | #endif | |
4108 | ||
4109 | if (check_eh_frame (exp, &nbytes)) | |
4110 | return; | |
4111 | ||
4112 | op = exp->X_op; | |
4113 | ||
4114 | /* Allow `.word 0' in the absolute section. */ | |
4115 | if (now_seg == absolute_section) | |
4116 | { | |
4117 | if (op != O_constant || exp->X_add_number != 0) | |
4118 | as_bad (_("attempt to store value in absolute section")); | |
4119 | abs_section_offset += nbytes; | |
4120 | return; | |
4121 | } | |
4122 | ||
4123 | /* Handle a negative bignum. */ | |
4124 | if (op == O_uminus | |
4125 | && exp->X_add_number == 0 | |
2b47531b ILT |
4126 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4127 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4128 | { |
4129 | int i; | |
4130 | unsigned long carry; | |
4131 | ||
2b47531b | 4132 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4133 | |
4134 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4135 | carry = 1; | |
4136 | for (i = 0; i < exp->X_add_number; i++) | |
4137 | { | |
4138 | unsigned long next; | |
4139 | ||
041ff4dd | 4140 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4141 | & LITTLENUM_MASK) |
4142 | + carry); | |
4143 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4144 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4145 | } | |
4146 | ||
4147 | /* We can ignore any carry out, because it will be handled by | |
4148 | extra_digit if it is needed. */ | |
4149 | ||
4150 | extra_digit = (valueT) -1; | |
4151 | op = O_big; | |
4152 | } | |
4153 | ||
4154 | if (op == O_absent || op == O_illegal) | |
4155 | { | |
4156 | as_warn (_("zero assumed for missing expression")); | |
4157 | exp->X_add_number = 0; | |
4158 | op = O_constant; | |
4159 | } | |
4160 | else if (op == O_big && exp->X_add_number <= 0) | |
4161 | { | |
0e389e77 | 4162 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4163 | exp->X_add_number = 0; |
4164 | op = O_constant; | |
4165 | } | |
4166 | else if (op == O_register) | |
4167 | { | |
4168 | as_warn (_("register value used as expression")); | |
4169 | op = O_constant; | |
4170 | } | |
4171 | ||
4172 | p = frag_more ((int) nbytes); | |
4173 | ||
4174 | #ifndef WORKING_DOT_WORD | |
4175 | /* If we have the difference of two symbols in a word, save it on | |
4176 | the broken_words list. See the code in write.c. */ | |
4177 | if (op == O_subtract && nbytes == 2) | |
4178 | { | |
4179 | struct broken_word *x; | |
4180 | ||
4181 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
4182 | x->next_broken_word = broken_words; | |
4183 | broken_words = x; | |
4184 | x->seg = now_seg; | |
4185 | x->subseg = now_subseg; | |
4186 | x->frag = frag_now; | |
4187 | x->word_goes_here = p; | |
4188 | x->dispfrag = 0; | |
4189 | x->add = exp->X_add_symbol; | |
4190 | x->sub = exp->X_op_symbol; | |
4191 | x->addnum = exp->X_add_number; | |
4192 | x->added = 0; | |
dc59a897 | 4193 | x->use_jump = 0; |
252b5132 RH |
4194 | new_broken_words++; |
4195 | return; | |
4196 | } | |
4197 | #endif | |
4198 | ||
4199 | /* If we have an integer, but the number of bytes is too large to | |
4200 | pass to md_number_to_chars, handle it as a bignum. */ | |
4201 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4202 | { | |
e5604d79 RS |
4203 | extra_digit = exp->X_unsigned ? 0 : -1; |
4204 | convert_to_bignum (exp); | |
4205 | op = O_big; | |
252b5132 RH |
4206 | } |
4207 | ||
4208 | if (op == O_constant) | |
4209 | { | |
3d540e93 NC |
4210 | valueT get; |
4211 | valueT use; | |
4212 | valueT mask; | |
252b5132 | 4213 | valueT hibit; |
3d540e93 | 4214 | valueT unmask; |
252b5132 RH |
4215 | |
4216 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4217 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4218 | if (nbytes >= sizeof (valueT)) |
4219 | { | |
4220 | mask = 0; | |
4221 | if (nbytes > sizeof (valueT)) | |
4222 | hibit = 0; | |
4223 | else | |
4224 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4225 | } | |
4226 | else | |
4227 | { | |
041ff4dd | 4228 | /* Don't store these bits. */ |
252b5132 RH |
4229 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4230 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4231 | } | |
4232 | ||
041ff4dd | 4233 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4234 | |
4235 | #ifdef NEVER | |
4236 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4237 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4238 | #endif |
4239 | ||
4240 | get = exp->X_add_number; | |
4241 | use = get & unmask; | |
4242 | if ((get & mask) != 0 | |
4243 | && ((get & mask) != mask | |
4244 | || (get & hibit) == 0)) | |
041ff4dd | 4245 | { /* Leading bits contain both 0s & 1s. */ |
b6ac5419 | 4246 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4247 | #ifndef __MSVCRT__ |
5c612369 NC |
4248 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4249 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4250 | #else |
4251 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4252 | (unsigned long long) get, (unsigned long long) use); | |
4253 | #endif | |
b6ac5419 AM |
4254 | #else |
4255 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4256 | (unsigned long) get, (unsigned long) use); | |
4257 | #endif | |
252b5132 | 4258 | } |
041ff4dd | 4259 | /* Put bytes in right order. */ |
252b5132 RH |
4260 | md_number_to_chars (p, use, (int) nbytes); |
4261 | } | |
4262 | else if (op == O_big) | |
4263 | { | |
4264 | unsigned int size; | |
4265 | LITTLENUM_TYPE *nums; | |
4266 | ||
252b5132 RH |
4267 | size = exp->X_add_number * CHARS_PER_LITTLENUM; |
4268 | if (nbytes < size) | |
4269 | { | |
93d90f46 AM |
4270 | int i = nbytes / CHARS_PER_LITTLENUM; |
4271 | if (i != 0) | |
4272 | { | |
4273 | LITTLENUM_TYPE sign = 0; | |
4274 | if ((generic_bignum[--i] | |
4275 | & (1 << (LITTLENUM_NUMBER_OF_BITS - 1))) != 0) | |
4276 | sign = ~(LITTLENUM_TYPE) 0; | |
4277 | while (++i < exp->X_add_number) | |
4278 | if (generic_bignum[i] != sign) | |
4279 | break; | |
4280 | } | |
4281 | if (i < exp->X_add_number) | |
4282 | as_warn (_("bignum truncated to %d bytes"), nbytes); | |
252b5132 RH |
4283 | size = nbytes; |
4284 | } | |
4285 | ||
93d90f46 AM |
4286 | if (nbytes == 1) |
4287 | { | |
4288 | md_number_to_chars (p, (valueT) generic_bignum[0], 1); | |
4289 | return; | |
4290 | } | |
4291 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4292 | ||
252b5132 RH |
4293 | if (target_big_endian) |
4294 | { | |
4295 | while (nbytes > size) | |
4296 | { | |
4297 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4298 | nbytes -= CHARS_PER_LITTLENUM; | |
4299 | p += CHARS_PER_LITTLENUM; | |
4300 | } | |
4301 | ||
4302 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4303 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4304 | { |
4305 | --nums; | |
4306 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4307 | size -= CHARS_PER_LITTLENUM; | |
4308 | p += CHARS_PER_LITTLENUM; | |
4309 | } | |
4310 | } | |
4311 | else | |
4312 | { | |
4313 | nums = generic_bignum; | |
ceac3f62 | 4314 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4315 | { |
4316 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4317 | ++nums; | |
4318 | size -= CHARS_PER_LITTLENUM; | |
4319 | p += CHARS_PER_LITTLENUM; | |
4320 | nbytes -= CHARS_PER_LITTLENUM; | |
4321 | } | |
4322 | ||
ceac3f62 | 4323 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4324 | { |
4325 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4326 | nbytes -= CHARS_PER_LITTLENUM; | |
4327 | p += CHARS_PER_LITTLENUM; | |
4328 | } | |
4329 | } | |
4330 | } | |
4331 | else | |
7ddd14de BW |
4332 | emit_expr_fix (exp, nbytes, frag_now, p); |
4333 | } | |
4334 | ||
4335 | void | |
4336 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p) | |
4337 | { | |
4338 | memset (p, 0, nbytes); | |
252b5132 | 4339 | |
7ddd14de | 4340 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4341 | |
252b5132 | 4342 | #ifdef TC_CONS_FIX_NEW |
7ddd14de | 4343 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal, nbytes, exp); |
252b5132 | 4344 | #else |
7ddd14de BW |
4345 | { |
4346 | bfd_reloc_code_real_type r; | |
252b5132 | 4347 | |
7ddd14de BW |
4348 | switch (nbytes) |
4349 | { | |
4350 | case 1: | |
4351 | r = BFD_RELOC_8; | |
4352 | break; | |
4353 | case 2: | |
4354 | r = BFD_RELOC_16; | |
4355 | break; | |
d4f4f3fb AM |
4356 | case 3: |
4357 | r = BFD_RELOC_24; | |
4358 | break; | |
7ddd14de BW |
4359 | case 4: |
4360 | r = BFD_RELOC_32; | |
4361 | break; | |
4362 | case 8: | |
4363 | r = BFD_RELOC_64; | |
4364 | break; | |
4365 | default: | |
4366 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
4367 | r = BFD_RELOC_32; | |
4368 | break; | |
252b5132 | 4369 | } |
7ddd14de BW |
4370 | fix_new_exp (frag, p - frag->fr_literal, (int) nbytes, exp, |
4371 | 0, r); | |
4372 | } | |
252b5132 | 4373 | #endif |
252b5132 RH |
4374 | } |
4375 | \f | |
4376 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
4377 | ||
4378 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
4379 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
4380 | then pack them all together. We do a little better in that we allow | |
4381 | them in words, longs, etc. and we'll pack them in target byte order | |
4382 | for you. | |
4383 | ||
47eebc20 | 4384 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
4385 | entirely fit, put it in the next unit. Overflowing the bitfield is |
4386 | explicitly *not* even a warning. The bitwidth should be considered | |
4387 | a "mask". | |
4388 | ||
4389 | To use this function the tc-XXX.h file should define | |
4390 | BITFIELD_CONS_EXPRESSIONS. */ | |
4391 | ||
041ff4dd | 4392 | static void |
252b5132 RH |
4393 | parse_bitfield_cons (exp, nbytes) |
4394 | expressionS *exp; | |
4395 | unsigned int nbytes; | |
4396 | { | |
4397 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
4398 | char *hold = input_line_pointer; | |
4399 | ||
4400 | (void) expression (exp); | |
4401 | ||
4402 | if (*input_line_pointer == ':') | |
041ff4dd NC |
4403 | { |
4404 | /* Bitfields. */ | |
252b5132 RH |
4405 | long value = 0; |
4406 | ||
4407 | for (;;) | |
4408 | { | |
4409 | unsigned long width; | |
4410 | ||
4411 | if (*input_line_pointer != ':') | |
4412 | { | |
4413 | input_line_pointer = hold; | |
4414 | break; | |
041ff4dd | 4415 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
4416 | |
4417 | /* In the general case, we can't allow | |
4418 | full expressions with symbol | |
4419 | differences and such. The relocation | |
4420 | entries for symbols not defined in this | |
4421 | assembly would require arbitrary field | |
4422 | widths, positions, and masks which most | |
4423 | of our current object formats don't | |
4424 | support. | |
4425 | ||
4426 | In the specific case where a symbol | |
4427 | *is* defined in this assembly, we | |
4428 | *could* build fixups and track it, but | |
4429 | this could lead to confusion for the | |
4430 | backends. I'm lazy. I'll take any | |
4431 | SEG_ABSOLUTE. I think that means that | |
4432 | you can use a previous .set or | |
041ff4dd | 4433 | .equ type symbol. xoxorich. */ |
252b5132 RH |
4434 | |
4435 | if (exp->X_op == O_absent) | |
4436 | { | |
4437 | as_warn (_("using a bit field width of zero")); | |
4438 | exp->X_add_number = 0; | |
4439 | exp->X_op = O_constant; | |
041ff4dd | 4440 | } /* Implied zero width bitfield. */ |
252b5132 RH |
4441 | |
4442 | if (exp->X_op != O_constant) | |
4443 | { | |
4444 | *input_line_pointer = '\0'; | |
4445 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
4446 | *input_line_pointer = ':'; | |
4447 | demand_empty_rest_of_line (); | |
4448 | return; | |
041ff4dd | 4449 | } /* Too complex. */ |
252b5132 RH |
4450 | |
4451 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
4452 | { | |
4453 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
4454 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
4455 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 4456 | } /* Too big. */ |
252b5132 RH |
4457 | |
4458 | if (width > bits_available) | |
4459 | { | |
4460 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
4461 | input_line_pointer = hold; | |
4462 | exp->X_add_number = value; | |
4463 | break; | |
041ff4dd | 4464 | } /* Won't fit. */ |
252b5132 | 4465 | |
ef99799a KH |
4466 | /* Skip ':'. */ |
4467 | hold = ++input_line_pointer; | |
252b5132 RH |
4468 | |
4469 | (void) expression (exp); | |
4470 | if (exp->X_op != O_constant) | |
4471 | { | |
4472 | char cache = *input_line_pointer; | |
4473 | ||
4474 | *input_line_pointer = '\0'; | |
4475 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
4476 | *input_line_pointer = cache; | |
4477 | demand_empty_rest_of_line (); | |
4478 | return; | |
041ff4dd | 4479 | } /* Too complex. */ |
252b5132 RH |
4480 | |
4481 | value |= ((~(-1 << width) & exp->X_add_number) | |
4482 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
4483 | ||
4484 | if ((bits_available -= width) == 0 | |
4485 | || is_it_end_of_statement () | |
4486 | || *input_line_pointer != ',') | |
4487 | { | |
4488 | break; | |
041ff4dd | 4489 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4490 | |
4491 | hold = ++input_line_pointer; | |
4492 | (void) expression (exp); | |
041ff4dd | 4493 | } |
252b5132 RH |
4494 | |
4495 | exp->X_add_number = value; | |
4496 | exp->X_op = O_constant; | |
4497 | exp->X_unsigned = 1; | |
041ff4dd NC |
4498 | } |
4499 | } | |
252b5132 RH |
4500 | |
4501 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4502 | \f | |
4503 | /* Handle an MRI style string expression. */ | |
4504 | ||
abd63a32 | 4505 | #ifdef TC_M68K |
252b5132 RH |
4506 | static void |
4507 | parse_mri_cons (exp, nbytes) | |
4508 | expressionS *exp; | |
4509 | unsigned int nbytes; | |
4510 | { | |
4511 | if (*input_line_pointer != '\'' | |
4512 | && (input_line_pointer[1] != '\'' | |
4513 | || (*input_line_pointer != 'A' | |
4514 | && *input_line_pointer != 'E'))) | |
4515 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
4516 | else | |
4517 | { | |
4518 | unsigned int scan; | |
4519 | unsigned int result = 0; | |
4520 | ||
4521 | /* An MRI style string. Cut into as many bytes as will fit into | |
4522 | a nbyte chunk, left justify if necessary, and separate with | |
4523 | commas so we can try again later. */ | |
4524 | if (*input_line_pointer == 'A') | |
4525 | ++input_line_pointer; | |
4526 | else if (*input_line_pointer == 'E') | |
4527 | { | |
4528 | as_bad (_("EBCDIC constants are not supported")); | |
4529 | ++input_line_pointer; | |
4530 | } | |
4531 | ||
4532 | input_line_pointer++; | |
4533 | for (scan = 0; scan < nbytes; scan++) | |
4534 | { | |
4535 | if (*input_line_pointer == '\'') | |
4536 | { | |
4537 | if (input_line_pointer[1] == '\'') | |
4538 | { | |
4539 | input_line_pointer++; | |
4540 | } | |
4541 | else | |
4542 | break; | |
4543 | } | |
4544 | result = (result << 8) | (*input_line_pointer++); | |
4545 | } | |
4546 | ||
041ff4dd | 4547 | /* Left justify. */ |
252b5132 RH |
4548 | while (scan < nbytes) |
4549 | { | |
4550 | result <<= 8; | |
4551 | scan++; | |
4552 | } | |
f0e652b4 | 4553 | |
041ff4dd | 4554 | /* Create correct expression. */ |
252b5132 RH |
4555 | exp->X_op = O_constant; |
4556 | exp->X_add_number = result; | |
f0e652b4 | 4557 | |
041ff4dd | 4558 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4559 | if (input_line_pointer[0] != '\'' || |
4560 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4561 | { | |
4562 | input_line_pointer -= 2; | |
4563 | input_line_pointer[0] = ','; | |
4564 | input_line_pointer[1] = '\''; | |
4565 | } | |
4566 | else | |
4567 | input_line_pointer++; | |
4568 | } | |
4569 | } | |
abd63a32 | 4570 | #endif /* TC_M68K */ |
252b5132 RH |
4571 | \f |
4572 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4573 | ||
4574 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4575 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4576 | object file COUNT times. | |
4577 | ||
4578 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4579 | ||
4580 | static void | |
4581 | parse_repeat_cons (exp, nbytes) | |
4582 | expressionS *exp; | |
4583 | unsigned int nbytes; | |
4584 | { | |
4585 | expressionS count; | |
3d540e93 | 4586 | int i; |
252b5132 RH |
4587 | |
4588 | expression (exp); | |
4589 | ||
4590 | if (*input_line_pointer != ':') | |
4591 | { | |
4592 | /* No repeat count. */ | |
4593 | return; | |
4594 | } | |
4595 | ||
4596 | ++input_line_pointer; | |
4597 | expression (&count); | |
4598 | if (count.X_op != O_constant | |
4599 | || count.X_add_number <= 0) | |
4600 | { | |
0e389e77 | 4601 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4602 | return; |
4603 | } | |
4604 | ||
4605 | /* The cons function is going to output this expression once. So we | |
4606 | output it count - 1 times. */ | |
4607 | for (i = count.X_add_number - 1; i > 0; i--) | |
4608 | emit_expr (exp, nbytes); | |
4609 | } | |
4610 | ||
4611 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4612 | \f | |
4613 | /* Parse a floating point number represented as a hex constant. This | |
4614 | permits users to specify the exact bits they want in the floating | |
4615 | point number. */ | |
4616 | ||
4617 | static int | |
39e6acbd | 4618 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4619 | { |
4620 | int length; | |
4621 | int i; | |
4622 | ||
4623 | switch (float_type) | |
4624 | { | |
4625 | case 'f': | |
4626 | case 'F': | |
4627 | case 's': | |
4628 | case 'S': | |
4629 | length = 4; | |
4630 | break; | |
4631 | ||
4632 | case 'd': | |
4633 | case 'D': | |
4634 | case 'r': | |
4635 | case 'R': | |
4636 | length = 8; | |
4637 | break; | |
4638 | ||
4639 | case 'x': | |
4640 | case 'X': | |
4641 | length = 12; | |
4642 | break; | |
4643 | ||
4644 | case 'p': | |
4645 | case 'P': | |
4646 | length = 12; | |
4647 | break; | |
4648 | ||
4649 | default: | |
0e389e77 | 4650 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4651 | return -1; |
4652 | } | |
4653 | ||
4654 | /* It would be nice if we could go through expression to parse the | |
4655 | hex constant, but if we get a bignum it's a pain to sort it into | |
4656 | the buffer correctly. */ | |
4657 | i = 0; | |
4658 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4659 | { | |
4660 | int d; | |
4661 | ||
4662 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4663 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4664 | if (*input_line_pointer == '_') |
4665 | { | |
4666 | ++input_line_pointer; | |
4667 | continue; | |
4668 | } | |
4669 | ||
4670 | if (i >= length) | |
4671 | { | |
0e389e77 | 4672 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4673 | return -1; |
4674 | } | |
4675 | d = hex_value (*input_line_pointer) << 4; | |
4676 | ++input_line_pointer; | |
4677 | while (*input_line_pointer == '_') | |
4678 | ++input_line_pointer; | |
4679 | if (hex_p (*input_line_pointer)) | |
4680 | { | |
4681 | d += hex_value (*input_line_pointer); | |
4682 | ++input_line_pointer; | |
4683 | } | |
4684 | if (target_big_endian) | |
4685 | bytes[i] = d; | |
4686 | else | |
4687 | bytes[length - i - 1] = d; | |
4688 | ++i; | |
4689 | } | |
4690 | ||
4691 | if (i < length) | |
4692 | { | |
4693 | if (target_big_endian) | |
4694 | memset (bytes + i, 0, length - i); | |
4695 | else | |
4696 | memset (bytes, 0, length - i); | |
4697 | } | |
4698 | ||
4699 | return length; | |
4700 | } | |
4701 | ||
d6415f6c | 4702 | /* float_cons() |
f0e652b4 | 4703 | |
041ff4dd NC |
4704 | CONStruct some more frag chars of .floats .ffloats etc. |
4705 | Makes 0 or more new frags. | |
4706 | If need_pass_2 == 1, no frags are emitted. | |
4707 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4708 | |
041ff4dd NC |
4709 | A floating constant is defined by atof_generic(), except it is preceded |
4710 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4711 | reading, I decided to be incompatible. This always tries to give you | |
4712 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4713 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4714 | a choice of 2 flavours of noise according to which of 2 floating-point |
4715 | scanners you directed AS to use. | |
f0e652b4 | 4716 | |
041ff4dd | 4717 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4718 | |
4719 | void | |
39e6acbd | 4720 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4721 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4722 | { |
3d540e93 | 4723 | char *p; |
041ff4dd | 4724 | int length; /* Number of chars in an object. */ |
3d540e93 | 4725 | char *err; /* Error from scanning floating literal. */ |
252b5132 RH |
4726 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4727 | ||
4728 | if (is_it_end_of_statement ()) | |
4729 | { | |
4730 | demand_empty_rest_of_line (); | |
4731 | return; | |
4732 | } | |
4733 | ||
4734 | #ifdef md_flush_pending_output | |
4735 | md_flush_pending_output (); | |
4736 | #endif | |
4737 | ||
cc3f603a JM |
4738 | #ifdef md_cons_align |
4739 | md_cons_align (1); | |
4740 | #endif | |
4741 | ||
252b5132 RH |
4742 | do |
4743 | { | |
041ff4dd | 4744 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4745 | SKIP_WHITESPACE (); |
4746 | ||
4747 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4748 | letter is legal. Someone may invent a "z" format and this routine |
4749 | has no use for such information. Lusers beware: you get | |
4750 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4751 | if (input_line_pointer[0] == '0' |
3882b010 | 4752 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4753 | input_line_pointer += 2; |
4754 | ||
4755 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4756 | point with the exact digits specified. */ |
252b5132 RH |
4757 | if (input_line_pointer[0] == ':') |
4758 | { | |
4759 | ++input_line_pointer; | |
4760 | length = hex_float (float_type, temp); | |
4761 | if (length < 0) | |
4762 | { | |
4763 | ignore_rest_of_line (); | |
4764 | return; | |
4765 | } | |
4766 | } | |
4767 | else | |
4768 | { | |
4769 | err = md_atof (float_type, temp, &length); | |
4770 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4771 | know (err != NULL || length > 0); |
252b5132 RH |
4772 | if (err) |
4773 | { | |
0e389e77 | 4774 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4775 | ignore_rest_of_line (); |
4776 | return; | |
4777 | } | |
4778 | } | |
4779 | ||
4780 | if (!need_pass_2) | |
4781 | { | |
4782 | int count; | |
4783 | ||
4784 | count = 1; | |
4785 | ||
4786 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4787 | if (*input_line_pointer == ':') | |
4788 | { | |
4789 | expressionS count_exp; | |
4790 | ||
4791 | ++input_line_pointer; | |
4792 | expression (&count_exp); | |
f0e652b4 | 4793 | |
252b5132 RH |
4794 | if (count_exp.X_op != O_constant |
4795 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4796 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4797 | else |
4798 | count = count_exp.X_add_number; | |
4799 | } | |
4800 | #endif | |
4801 | ||
4802 | while (--count >= 0) | |
4803 | { | |
4804 | p = frag_more (length); | |
4805 | memcpy (p, temp, (unsigned int) length); | |
4806 | } | |
4807 | } | |
4808 | SKIP_WHITESPACE (); | |
4809 | } | |
4810 | while (*input_line_pointer++ == ','); | |
4811 | ||
041ff4dd NC |
4812 | /* Put terminator back into stream. */ |
4813 | --input_line_pointer; | |
252b5132 | 4814 | demand_empty_rest_of_line (); |
041ff4dd | 4815 | } |
252b5132 | 4816 | \f |
041ff4dd | 4817 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4818 | |
4819 | static inline int | |
39e6acbd | 4820 | sizeof_sleb128 (offsetT value) |
252b5132 | 4821 | { |
3d540e93 NC |
4822 | int size = 0; |
4823 | unsigned byte; | |
252b5132 RH |
4824 | |
4825 | do | |
4826 | { | |
4827 | byte = (value & 0x7f); | |
4828 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4829 | Fortunately, we can structure things so that the extra work reduces | |
4830 | to a noop on systems that do things "properly". */ | |
4831 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4832 | size += 1; | |
4833 | } | |
4834 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4835 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4836 | ||
4837 | return size; | |
4838 | } | |
4839 | ||
4840 | static inline int | |
39e6acbd | 4841 | sizeof_uleb128 (valueT value) |
252b5132 | 4842 | { |
3d540e93 | 4843 | int size = 0; |
252b5132 RH |
4844 | |
4845 | do | |
4846 | { | |
252b5132 RH |
4847 | value >>= 7; |
4848 | size += 1; | |
4849 | } | |
4850 | while (value != 0); | |
4851 | ||
4852 | return size; | |
4853 | } | |
4854 | ||
4855 | int | |
39e6acbd | 4856 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4857 | { |
4858 | if (sign) | |
4859 | return sizeof_sleb128 ((offsetT) value); | |
4860 | else | |
4861 | return sizeof_uleb128 (value); | |
4862 | } | |
4863 | ||
4864 | /* Output a LEB128 value. */ | |
4865 | ||
4866 | static inline int | |
39e6acbd | 4867 | output_sleb128 (char *p, offsetT value) |
252b5132 | 4868 | { |
3d540e93 NC |
4869 | char *orig = p; |
4870 | int more; | |
252b5132 RH |
4871 | |
4872 | do | |
4873 | { | |
4874 | unsigned byte = (value & 0x7f); | |
4875 | ||
4876 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4877 | Fortunately, we can structure things so that the extra work reduces | |
4878 | to a noop on systems that do things "properly". */ | |
4879 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4880 | ||
4881 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4882 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4883 | if (more) | |
4884 | byte |= 0x80; | |
4885 | ||
4886 | *p++ = byte; | |
4887 | } | |
4888 | while (more); | |
4889 | ||
4890 | return p - orig; | |
4891 | } | |
4892 | ||
4893 | static inline int | |
39e6acbd | 4894 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4895 | { |
4896 | char *orig = p; | |
4897 | ||
4898 | do | |
4899 | { | |
4900 | unsigned byte = (value & 0x7f); | |
4901 | value >>= 7; | |
4902 | if (value != 0) | |
4903 | /* More bytes to follow. */ | |
4904 | byte |= 0x80; | |
4905 | ||
4906 | *p++ = byte; | |
4907 | } | |
4908 | while (value != 0); | |
4909 | ||
4910 | return p - orig; | |
4911 | } | |
4912 | ||
4913 | int | |
39e6acbd | 4914 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4915 | { |
4916 | if (sign) | |
4917 | return output_sleb128 (p, (offsetT) value); | |
4918 | else | |
4919 | return output_uleb128 (p, value); | |
4920 | } | |
4921 | ||
4922 | /* Do the same for bignums. We combine sizeof with output here in that | |
4923 | we don't output for NULL values of P. It isn't really as critical as | |
4924 | for "normal" values that this be streamlined. */ | |
4925 | ||
6d4d30bb | 4926 | static inline int |
39e6acbd | 4927 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4928 | { |
4929 | char *orig = p; | |
4930 | valueT val = 0; | |
4931 | int loaded = 0; | |
4932 | unsigned byte; | |
4933 | ||
4934 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4935 | while (size > 1 |
4936 | && bignum[size - 1] == LITTLENUM_MASK | |
4937 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4938 | size--; |
4939 | ||
4940 | do | |
4941 | { | |
e5604d79 RS |
4942 | /* OR in the next part of the littlenum. */ |
4943 | val |= (*bignum << loaded); | |
4944 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4945 | size--; | |
4946 | bignum++; | |
4947 | ||
4948 | /* Add bytes until there are less than 7 bits left in VAL | |
4949 | or until every non-sign bit has been written. */ | |
4950 | do | |
252b5132 | 4951 | { |
e5604d79 RS |
4952 | byte = val & 0x7f; |
4953 | loaded -= 7; | |
4954 | val >>= 7; | |
4955 | if (size > 0 | |
4956 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 4957 | byte |= 0x80; |
e5604d79 RS |
4958 | |
4959 | if (orig) | |
4960 | *p = byte; | |
4961 | p++; | |
252b5132 | 4962 | } |
e5604d79 RS |
4963 | while ((byte & 0x80) != 0 && loaded >= 7); |
4964 | } | |
4965 | while (size > 0); | |
252b5132 | 4966 | |
e5604d79 RS |
4967 | /* Mop up any left-over bits (of which there will be less than 7). */ |
4968 | if ((byte & 0x80) != 0) | |
4969 | { | |
4970 | /* Sign-extend VAL. */ | |
4971 | if (val & (1 << (loaded - 1))) | |
4972 | val |= ~0 << loaded; | |
252b5132 | 4973 | if (orig) |
e5604d79 | 4974 | *p = val & 0x7f; |
252b5132 RH |
4975 | p++; |
4976 | } | |
252b5132 RH |
4977 | |
4978 | return p - orig; | |
4979 | } | |
4980 | ||
6d4d30bb | 4981 | static inline int |
39e6acbd | 4982 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4983 | { |
4984 | char *orig = p; | |
4985 | valueT val = 0; | |
4986 | int loaded = 0; | |
4987 | unsigned byte; | |
4988 | ||
4989 | /* Strip leading zeros off the bignum. */ | |
4990 | /* XXX: Is this needed? */ | |
041ff4dd | 4991 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4992 | size--; |
4993 | ||
4994 | do | |
4995 | { | |
4996 | if (loaded < 7 && size > 0) | |
4997 | { | |
4998 | val |= (*bignum << loaded); | |
4999 | loaded += 8 * CHARS_PER_LITTLENUM; | |
5000 | size--; | |
5001 | bignum++; | |
5002 | } | |
5003 | ||
5004 | byte = val & 0x7f; | |
5005 | loaded -= 7; | |
5006 | val >>= 7; | |
5007 | ||
5008 | if (size > 0 || val) | |
5009 | byte |= 0x80; | |
5010 | ||
5011 | if (orig) | |
5012 | *p = byte; | |
5013 | p++; | |
5014 | } | |
5015 | while (byte & 0x80); | |
5016 | ||
5017 | return p - orig; | |
5018 | } | |
5019 | ||
6d4d30bb | 5020 | static int |
39e6acbd | 5021 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
5022 | { |
5023 | if (sign) | |
5024 | return output_big_sleb128 (p, bignum, size); | |
5025 | else | |
5026 | return output_big_uleb128 (p, bignum, size); | |
5027 | } | |
5028 | ||
5029 | /* Generate the appropriate fragments for a given expression to emit a | |
5030 | leb128 value. */ | |
5031 | ||
87c245cc | 5032 | static void |
39e6acbd | 5033 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5034 | { |
5035 | operatorT op = exp->X_op; | |
b7712f8d | 5036 | unsigned int nbytes; |
252b5132 RH |
5037 | |
5038 | if (op == O_absent || op == O_illegal) | |
5039 | { | |
5040 | as_warn (_("zero assumed for missing expression")); | |
5041 | exp->X_add_number = 0; | |
5042 | op = O_constant; | |
5043 | } | |
5044 | else if (op == O_big && exp->X_add_number <= 0) | |
5045 | { | |
0e389e77 | 5046 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5047 | exp->X_add_number = 0; |
5048 | op = O_constant; | |
5049 | } | |
5050 | else if (op == O_register) | |
5051 | { | |
5052 | as_warn (_("register value used as expression")); | |
5053 | op = O_constant; | |
5054 | } | |
e5604d79 RS |
5055 | else if (op == O_constant |
5056 | && sign | |
5057 | && (exp->X_add_number < 0) != !exp->X_unsigned) | |
5058 | { | |
5059 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5060 | doesn't reflect the sign of the original value. Convert EXP | |
5061 | to a correctly-extended bignum instead. */ | |
5062 | convert_to_bignum (exp); | |
5063 | op = O_big; | |
5064 | } | |
252b5132 | 5065 | |
67a659f6 RH |
5066 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5067 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5068 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5069 | if (check_eh_frame (exp, &nbytes)) |
5070 | abort (); | |
5071 | ||
371b7465 RH |
5072 | /* Let the backend know that subsequent data may be byte aligned. */ |
5073 | #ifdef md_cons_align | |
5074 | md_cons_align (1); | |
5075 | #endif | |
5076 | ||
252b5132 RH |
5077 | if (op == O_constant) |
5078 | { | |
5079 | /* If we've got a constant, emit the thing directly right now. */ | |
5080 | ||
5081 | valueT value = exp->X_add_number; | |
5082 | int size; | |
5083 | char *p; | |
5084 | ||
5085 | size = sizeof_leb128 (value, sign); | |
5086 | p = frag_more (size); | |
5087 | output_leb128 (p, value, sign); | |
5088 | } | |
5089 | else if (op == O_big) | |
5090 | { | |
5091 | /* O_big is a different sort of constant. */ | |
5092 | ||
5093 | int size; | |
5094 | char *p; | |
5095 | ||
5096 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
5097 | p = frag_more (size); | |
5098 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
5099 | } | |
5100 | else | |
5101 | { | |
041ff4dd | 5102 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5103 | resolve things later. */ |
5104 | ||
041ff4dd | 5105 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5106 | make_expr_symbol (exp), 0, (char *) NULL); |
5107 | } | |
5108 | } | |
5109 | ||
5110 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5111 | ||
5112 | void | |
39e6acbd | 5113 | s_leb128 (int sign) |
252b5132 RH |
5114 | { |
5115 | expressionS exp; | |
5116 | ||
00bbdfe7 BW |
5117 | #ifdef md_flush_pending_output |
5118 | md_flush_pending_output (); | |
5119 | #endif | |
5120 | ||
041ff4dd NC |
5121 | do |
5122 | { | |
5123 | expression (&exp); | |
5124 | emit_leb128_expr (&exp, sign); | |
5125 | } | |
5126 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5127 | |
5128 | input_line_pointer--; | |
5129 | demand_empty_rest_of_line (); | |
5130 | } | |
5131 | \f | |
38a57ae7 NC |
5132 | static void |
5133 | stringer_append_char (int c, int bitsize) | |
5134 | { | |
5135 | if (!target_big_endian) | |
5136 | FRAG_APPEND_1_CHAR (c); | |
5137 | ||
5138 | switch (bitsize) | |
5139 | { | |
5140 | case 64: | |
5141 | FRAG_APPEND_1_CHAR (0); | |
5142 | FRAG_APPEND_1_CHAR (0); | |
5143 | FRAG_APPEND_1_CHAR (0); | |
5144 | FRAG_APPEND_1_CHAR (0); | |
5145 | /* Fall through. */ | |
5146 | case 32: | |
5147 | FRAG_APPEND_1_CHAR (0); | |
5148 | FRAG_APPEND_1_CHAR (0); | |
5149 | /* Fall through. */ | |
5150 | case 16: | |
5151 | FRAG_APPEND_1_CHAR (0); | |
5152 | /* Fall through. */ | |
5153 | case 8: | |
5154 | break; | |
5155 | default: | |
5156 | /* Called with invalid bitsize argument. */ | |
5157 | abort (); | |
5158 | break; | |
5159 | } | |
5160 | if (target_big_endian) | |
5161 | FRAG_APPEND_1_CHAR (c); | |
5162 | } | |
5163 | ||
5164 | /* Worker to do .ascii etc statements. | |
5165 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5166 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5167 | check it. |
5168 | Checks for end-of-line. | |
5169 | BITS_APPENDZERO says how many bits are in a target char. | |
5170 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5171 | |
5172 | void | |
38a57ae7 | 5173 | stringer (int bits_appendzero) |
252b5132 | 5174 | { |
38a57ae7 NC |
5175 | const int bitsize = bits_appendzero & ~7; |
5176 | const int append_zero = bits_appendzero & 1; | |
5177 | unsigned int c; | |
87975d2a | 5178 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5179 | char *start; |
87975d2a | 5180 | #endif |
252b5132 RH |
5181 | |
5182 | #ifdef md_flush_pending_output | |
5183 | md_flush_pending_output (); | |
5184 | #endif | |
5185 | ||
cc3f603a JM |
5186 | #ifdef md_cons_align |
5187 | md_cons_align (1); | |
5188 | #endif | |
5189 | ||
041ff4dd NC |
5190 | /* The following awkward logic is to parse ZERO or more strings, |
5191 | comma separated. Recall a string expression includes spaces | |
5192 | before the opening '\"' and spaces after the closing '\"'. | |
5193 | We fake a leading ',' if there is (supposed to be) | |
5194 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5195 | if (is_it_end_of_statement ()) |
5196 | { | |
041ff4dd NC |
5197 | c = 0; /* Skip loop. */ |
5198 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5199 | } |
5200 | else | |
5201 | { | |
041ff4dd | 5202 | c = ','; /* Do loop. */ |
252b5132 | 5203 | } |
8ac9ba6c NC |
5204 | /* If we have been switched into the abs_section then we |
5205 | will not have an obstack onto which we can hang strings. */ | |
5206 | if (now_seg == absolute_section) | |
5207 | { | |
5208 | as_bad (_("strings must be placed into a section")); | |
5209 | c = 0; | |
5210 | ignore_rest_of_line (); | |
5211 | } | |
d6415f6c | 5212 | |
252b5132 RH |
5213 | while (c == ',' || c == '<' || c == '"') |
5214 | { | |
5215 | SKIP_WHITESPACE (); | |
5216 | switch (*input_line_pointer) | |
5217 | { | |
5218 | case '\"': | |
041ff4dd | 5219 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5220 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5221 | start = input_line_pointer; |
87975d2a | 5222 | #endif |
38a57ae7 | 5223 | |
252b5132 | 5224 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5225 | stringer_append_char (c, bitsize); |
5226 | ||
252b5132 | 5227 | if (append_zero) |
38a57ae7 NC |
5228 | stringer_append_char (0, bitsize); |
5229 | ||
252b5132 RH |
5230 | know (input_line_pointer[-1] == '\"'); |
5231 | ||
87975d2a | 5232 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5233 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5234 | will emit .string with a filename in the .debug section |
5235 | after a sequence of constants. See the comment in | |
5236 | emit_expr for the sequence. emit_expr will set | |
5237 | dwarf_file_string to non-zero if this string might be a | |
5238 | source file name. */ | |
252b5132 RH |
5239 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5240 | dwarf_file_string = 0; | |
5241 | else if (dwarf_file_string) | |
5242 | { | |
5243 | c = input_line_pointer[-1]; | |
5244 | input_line_pointer[-1] = '\0'; | |
5245 | listing_source_file (start); | |
5246 | input_line_pointer[-1] = c; | |
5247 | } | |
252b5132 RH |
5248 | #endif |
5249 | ||
5250 | break; | |
5251 | case '<': | |
5252 | input_line_pointer++; | |
5253 | c = get_single_number (); | |
38a57ae7 | 5254 | stringer_append_char (c, bitsize); |
252b5132 | 5255 | if (*input_line_pointer != '>') |
38a57ae7 NC |
5256 | as_bad (_("expected <nn>")); |
5257 | ||
252b5132 RH |
5258 | input_line_pointer++; |
5259 | break; | |
5260 | case ',': | |
5261 | input_line_pointer++; | |
5262 | break; | |
5263 | } | |
5264 | SKIP_WHITESPACE (); | |
5265 | c = *input_line_pointer; | |
5266 | } | |
5267 | ||
5268 | demand_empty_rest_of_line (); | |
38a57ae7 | 5269 | } |
252b5132 RH |
5270 | \f |
5271 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5272 | high bits set. We'll probably also have trouble with | |
5273 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5274 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5275 | |
041ff4dd | 5276 | unsigned int |
39e6acbd | 5277 | next_char_of_string (void) |
252b5132 | 5278 | { |
3d540e93 | 5279 | unsigned int c; |
252b5132 RH |
5280 | |
5281 | c = *input_line_pointer++ & CHAR_MASK; | |
5282 | switch (c) | |
5283 | { | |
5284 | case '\"': | |
5285 | c = NOT_A_CHAR; | |
5286 | break; | |
5287 | ||
5288 | case '\n': | |
0e389e77 | 5289 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5290 | bump_line_counters (); |
5291 | break; | |
5292 | ||
5293 | #ifndef NO_STRING_ESCAPES | |
5294 | case '\\': | |
5295 | switch (c = *input_line_pointer++) | |
5296 | { | |
5297 | case 'b': | |
5298 | c = '\b'; | |
5299 | break; | |
5300 | ||
5301 | case 'f': | |
5302 | c = '\f'; | |
5303 | break; | |
5304 | ||
5305 | case 'n': | |
5306 | c = '\n'; | |
5307 | break; | |
5308 | ||
5309 | case 'r': | |
5310 | c = '\r'; | |
5311 | break; | |
5312 | ||
5313 | case 't': | |
5314 | c = '\t'; | |
5315 | break; | |
5316 | ||
5317 | case 'v': | |
5318 | c = '\013'; | |
5319 | break; | |
5320 | ||
5321 | case '\\': | |
5322 | case '"': | |
041ff4dd | 5323 | break; /* As itself. */ |
252b5132 RH |
5324 | |
5325 | case '0': | |
5326 | case '1': | |
5327 | case '2': | |
5328 | case '3': | |
5329 | case '4': | |
5330 | case '5': | |
5331 | case '6': | |
5332 | case '7': | |
5333 | case '8': | |
5334 | case '9': | |
5335 | { | |
5336 | long number; | |
5337 | int i; | |
5338 | ||
041ff4dd | 5339 | for (i = 0, number = 0; |
3882b010 | 5340 | ISDIGIT (c) && i < 3; |
041ff4dd | 5341 | c = *input_line_pointer++, i++) |
252b5132 RH |
5342 | { |
5343 | number = number * 8 + c - '0'; | |
5344 | } | |
f0e652b4 | 5345 | |
252b5132 RH |
5346 | c = number & 0xff; |
5347 | } | |
5348 | --input_line_pointer; | |
5349 | break; | |
5350 | ||
5351 | case 'x': | |
5352 | case 'X': | |
5353 | { | |
5354 | long number; | |
5355 | ||
5356 | number = 0; | |
5357 | c = *input_line_pointer++; | |
3882b010 | 5358 | while (ISXDIGIT (c)) |
252b5132 | 5359 | { |
3882b010 | 5360 | if (ISDIGIT (c)) |
252b5132 | 5361 | number = number * 16 + c - '0'; |
3882b010 | 5362 | else if (ISUPPER (c)) |
252b5132 RH |
5363 | number = number * 16 + c - 'A' + 10; |
5364 | else | |
5365 | number = number * 16 + c - 'a' + 10; | |
5366 | c = *input_line_pointer++; | |
5367 | } | |
5368 | c = number & 0xff; | |
5369 | --input_line_pointer; | |
5370 | } | |
5371 | break; | |
5372 | ||
5373 | case '\n': | |
041ff4dd | 5374 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5375 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5376 | c = '\n'; |
5377 | bump_line_counters (); | |
5378 | break; | |
5379 | ||
5380 | default: | |
5381 | ||
5382 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5383 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5384 | c = '?'; |
5385 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5386 | ||
5387 | break; | |
041ff4dd | 5388 | } |
252b5132 RH |
5389 | break; |
5390 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
5391 | ||
5392 | default: | |
5393 | break; | |
041ff4dd | 5394 | } |
252b5132 | 5395 | return (c); |
041ff4dd | 5396 | } |
252b5132 RH |
5397 | \f |
5398 | static segT | |
3d540e93 | 5399 | get_segmented_expression (expressionS *expP) |
252b5132 | 5400 | { |
3d540e93 | 5401 | segT retval; |
252b5132 RH |
5402 | |
5403 | retval = expression (expP); | |
5404 | if (expP->X_op == O_illegal | |
5405 | || expP->X_op == O_absent | |
5406 | || expP->X_op == O_big) | |
5407 | { | |
0e389e77 | 5408 | as_bad (_("expected address expression")); |
252b5132 RH |
5409 | expP->X_op = O_constant; |
5410 | expP->X_add_number = 0; | |
5411 | retval = absolute_section; | |
5412 | } | |
5413 | return retval; | |
5414 | } | |
5415 | ||
041ff4dd | 5416 | static segT |
3d540e93 | 5417 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5418 | { |
3d540e93 | 5419 | segT retval; |
252b5132 RH |
5420 | |
5421 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
5422 | { | |
5423 | /* There is no easy way to extract the undefined symbol from the | |
5424 | expression. */ | |
5425 | if (expP->X_add_symbol != NULL | |
5426 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5427 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5428 | S_GET_NAME (expP->X_add_symbol)); | |
5429 | else | |
5430 | as_warn (_("some symbol undefined; zero assumed")); | |
5431 | retval = absolute_section; | |
5432 | expP->X_op = O_constant; | |
5433 | expP->X_add_number = 0; | |
5434 | } | |
5435 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
5436 | return (retval); | |
041ff4dd | 5437 | } |
252b5132 | 5438 | |
041ff4dd | 5439 | char /* Return terminator. */ |
39e6acbd | 5440 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5441 | { |
5442 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5443 | *val_pointer = (long) get_absolute_expression (); | |
5444 | return (*input_line_pointer++); | |
5445 | } | |
5446 | \f | |
041ff4dd NC |
5447 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5448 | Give a warning if that happens. */ | |
5449 | ||
252b5132 | 5450 | char * |
39e6acbd | 5451 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5452 | { |
3d540e93 | 5453 | char *s; |
252b5132 RH |
5454 | |
5455 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5456 | { | |
3d540e93 | 5457 | int len; |
252b5132 RH |
5458 | |
5459 | for (len = *len_pointer; len > 0; len--) | |
5460 | { | |
5461 | if (*s == 0) | |
5462 | { | |
5463 | s = 0; | |
5464 | len = 1; | |
5465 | *len_pointer = 0; | |
0e389e77 | 5466 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5467 | } |
5468 | } | |
5469 | } | |
f0e652b4 | 5470 | |
252b5132 RH |
5471 | return s; |
5472 | } | |
5473 | \f | |
041ff4dd NC |
5474 | /* Demand string, but return a safe (=private) copy of the string. |
5475 | Return NULL if we can't read a string here. */ | |
5476 | ||
252b5132 | 5477 | char * |
39e6acbd | 5478 | demand_copy_string (int *lenP) |
252b5132 | 5479 | { |
3d540e93 NC |
5480 | unsigned int c; |
5481 | int len; | |
252b5132 RH |
5482 | char *retval; |
5483 | ||
5484 | len = 0; | |
5485 | SKIP_WHITESPACE (); | |
5486 | if (*input_line_pointer == '\"') | |
5487 | { | |
041ff4dd | 5488 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5489 | |
5490 | while (is_a_char (c = next_char_of_string ())) | |
5491 | { | |
5492 | obstack_1grow (¬es, c); | |
5493 | len++; | |
5494 | } | |
5495 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5496 | null terminated string. */ |
252b5132 | 5497 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5498 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5499 | } |
5500 | else | |
5501 | { | |
c95b35a9 | 5502 | as_bad (_("missing string")); |
252b5132 RH |
5503 | retval = NULL; |
5504 | ignore_rest_of_line (); | |
5505 | } | |
5506 | *lenP = len; | |
5507 | return (retval); | |
041ff4dd | 5508 | } |
252b5132 | 5509 | \f |
041ff4dd | 5510 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5511 | |
041ff4dd | 5512 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5513 | |
041ff4dd NC |
5514 | Out: 1 if input_line_pointer->end-of-line. */ |
5515 | ||
5516 | int | |
39e6acbd | 5517 | is_it_end_of_statement (void) |
252b5132 RH |
5518 | { |
5519 | SKIP_WHITESPACE (); | |
5520 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5521 | } |
252b5132 | 5522 | |
041ff4dd | 5523 | void |
39e6acbd | 5524 | equals (char *sym_name, int reassign) |
252b5132 | 5525 | { |
252b5132 | 5526 | char *stop = NULL; |
fb25138b | 5527 | char stopc = 0; |
252b5132 RH |
5528 | |
5529 | input_line_pointer++; | |
5530 | if (*input_line_pointer == '=') | |
5531 | input_line_pointer++; | |
9497f5ac NC |
5532 | if (reassign < 0 && *input_line_pointer == '=') |
5533 | input_line_pointer++; | |
252b5132 RH |
5534 | |
5535 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5536 | input_line_pointer++; | |
5537 | ||
5538 | if (flag_mri) | |
5539 | stop = mri_comment_field (&stopc); | |
5540 | ||
9497f5ac | 5541 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5542 | |
5543 | if (flag_mri) | |
31d20a21 AM |
5544 | { |
5545 | demand_empty_rest_of_line (); | |
5546 | mri_comment_end (stop, stopc); | |
5547 | } | |
041ff4dd | 5548 | } |
252b5132 | 5549 | |
7e005732 NC |
5550 | /* .incbin -- include a file verbatim at the current location. */ |
5551 | ||
5552 | void | |
39e6acbd | 5553 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5554 | { |
5555 | FILE * binfile; | |
5556 | char * path; | |
5557 | char * filename; | |
5558 | char * binfrag; | |
5559 | long skip = 0; | |
5560 | long count = 0; | |
5561 | long bytes; | |
5562 | int len; | |
5563 | ||
5564 | #ifdef md_flush_pending_output | |
5565 | md_flush_pending_output (); | |
5566 | #endif | |
5567 | ||
cc3f603a JM |
5568 | #ifdef md_cons_align |
5569 | md_cons_align (1); | |
5570 | #endif | |
5571 | ||
7e005732 NC |
5572 | SKIP_WHITESPACE (); |
5573 | filename = demand_copy_string (& len); | |
5574 | if (filename == NULL) | |
5575 | return; | |
5576 | ||
5577 | SKIP_WHITESPACE (); | |
5578 | ||
5579 | /* Look for optional skip and count. */ | |
5580 | if (* input_line_pointer == ',') | |
5581 | { | |
5582 | ++ input_line_pointer; | |
5583 | skip = get_absolute_expression (); | |
5584 | ||
5585 | SKIP_WHITESPACE (); | |
5586 | ||
5587 | if (* input_line_pointer == ',') | |
5588 | { | |
5589 | ++ input_line_pointer; | |
5590 | ||
5591 | count = get_absolute_expression (); | |
5592 | if (count == 0) | |
5593 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5594 | ||
5595 | SKIP_WHITESPACE (); | |
5596 | } | |
5597 | } | |
5598 | ||
5599 | demand_empty_rest_of_line (); | |
5600 | ||
5601 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5602 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5603 | if (binfile == NULL) |
5604 | { | |
5605 | int i; | |
5606 | ||
1e9cc1c2 | 5607 | path = (char *) xmalloc ((unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5608 | |
5609 | for (i = 0; i < include_dir_count; i++) | |
5610 | { | |
5611 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5612 | ||
f740e790 | 5613 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5614 | if (binfile != NULL) |
5615 | break; | |
5616 | } | |
5617 | ||
5618 | if (binfile == NULL) | |
5619 | as_bad (_("file not found: %s"), filename); | |
5620 | } | |
5621 | else | |
5622 | path = xstrdup (filename); | |
5623 | ||
5624 | if (binfile) | |
5625 | { | |
f740e790 NC |
5626 | long file_len; |
5627 | ||
7e005732 NC |
5628 | register_dependency (path); |
5629 | ||
5630 | /* Compute the length of the file. */ | |
5631 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5632 | { | |
5633 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5634 | goto done; | |
5635 | } | |
f740e790 | 5636 | file_len = ftell (binfile); |
7e005732 | 5637 | |
c556cc9c | 5638 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5639 | if (count == 0) |
c556cc9c | 5640 | count = file_len - skip; |
7e005732 | 5641 | |
c556cc9c | 5642 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5643 | { |
c556cc9c | 5644 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5645 | skip, count, file_len); |
7e005732 NC |
5646 | goto done; |
5647 | } | |
5648 | ||
5649 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5650 | { | |
5651 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5652 | goto done; | |
5653 | } | |
5654 | ||
5655 | /* Allocate frag space and store file contents in it. */ | |
5656 | binfrag = frag_more (count); | |
5657 | ||
5658 | bytes = fread (binfrag, 1, count, binfile); | |
5659 | if (bytes < count) | |
5660 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5661 | path, bytes, count); | |
5662 | } | |
5663 | done: | |
5664 | if (binfile != NULL) | |
5665 | fclose (binfile); | |
5666 | if (path) | |
5667 | free (path); | |
5668 | } | |
5669 | ||
041ff4dd | 5670 | /* .include -- include a file at this point. */ |
252b5132 | 5671 | |
041ff4dd | 5672 | void |
39e6acbd | 5673 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5674 | { |
252b5132 RH |
5675 | char *filename; |
5676 | int i; | |
1e9cc1c2 | 5677 | FILE *try_file; |
252b5132 RH |
5678 | char *path; |
5679 | ||
041ff4dd | 5680 | if (!flag_m68k_mri) |
252b5132 RH |
5681 | { |
5682 | filename = demand_copy_string (&i); | |
5683 | if (filename == NULL) | |
5684 | { | |
5685 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5686 | called ignore_rest_of_line. */ |
252b5132 RH |
5687 | return; |
5688 | } | |
5689 | } | |
5690 | else | |
5691 | { | |
5692 | SKIP_WHITESPACE (); | |
5693 | i = 0; | |
041ff4dd | 5694 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5695 | && *input_line_pointer != ' ' |
5696 | && *input_line_pointer != '\t') | |
5697 | { | |
5698 | obstack_1grow (¬es, *input_line_pointer); | |
5699 | ++input_line_pointer; | |
5700 | ++i; | |
5701 | } | |
f0e652b4 | 5702 | |
252b5132 | 5703 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5704 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5705 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5706 | ++input_line_pointer; |
5707 | } | |
f0e652b4 | 5708 | |
252b5132 | 5709 | demand_empty_rest_of_line (); |
1e9cc1c2 NC |
5710 | path = (char *) xmalloc ((unsigned long) i |
5711 | + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5712 | |
252b5132 RH |
5713 | for (i = 0; i < include_dir_count; i++) |
5714 | { | |
5715 | strcpy (path, include_dirs[i]); | |
5716 | strcat (path, "/"); | |
5717 | strcat (path, filename); | |
1e9cc1c2 | 5718 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 5719 | { |
1e9cc1c2 | 5720 | fclose (try_file); |
252b5132 RH |
5721 | goto gotit; |
5722 | } | |
5723 | } | |
f0e652b4 | 5724 | |
252b5132 RH |
5725 | free (path); |
5726 | path = filename; | |
5727 | gotit: | |
041ff4dd | 5728 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5729 | register_dependency (path); |
9f10757c | 5730 | input_scrub_insert_file (path); |
041ff4dd | 5731 | } |
252b5132 | 5732 | |
041ff4dd | 5733 | void |
39e6acbd | 5734 | add_include_dir (char *path) |
252b5132 RH |
5735 | { |
5736 | int i; | |
5737 | ||
5738 | if (include_dir_count == 0) | |
5739 | { | |
5740 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5741 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5742 | include_dir_count = 2; |
5743 | } | |
5744 | else | |
5745 | { | |
5746 | include_dir_count++; | |
041ff4dd NC |
5747 | include_dirs = |
5748 | (char **) realloc (include_dirs, | |
5749 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5750 | } |
5751 | ||
041ff4dd | 5752 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5753 | |
5754 | i = strlen (path); | |
5755 | if (i > include_dir_maxlen) | |
5756 | include_dir_maxlen = i; | |
041ff4dd | 5757 | } |
252b5132 RH |
5758 | \f |
5759 | /* Output debugging information to denote the source file. */ | |
5760 | ||
5761 | static void | |
39e6acbd | 5762 | generate_file_debug (void) |
252b5132 RH |
5763 | { |
5764 | if (debug_type == DEBUG_STABS) | |
5765 | stabs_generate_asm_file (); | |
5766 | } | |
5767 | ||
5768 | /* Output line number debugging information for the current source line. */ | |
5769 | ||
5770 | void | |
39e6acbd | 5771 | generate_lineno_debug (void) |
252b5132 | 5772 | { |
252b5132 RH |
5773 | switch (debug_type) |
5774 | { | |
5775 | case DEBUG_UNSPECIFIED: | |
5776 | case DEBUG_NONE: | |
4dc7ead9 | 5777 | case DEBUG_DWARF: |
252b5132 RH |
5778 | break; |
5779 | case DEBUG_STABS: | |
5780 | stabs_generate_asm_lineno (); | |
5781 | break; | |
5782 | case DEBUG_ECOFF: | |
5783 | ecoff_generate_asm_lineno (); | |
5784 | break; | |
252b5132 | 5785 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5786 | /* ??? We could here indicate to dwarf2dbg.c that something |
5787 | has changed. However, since there is additional backend | |
5788 | support that is required (calling dwarf2_emit_insn), we | |
5789 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5790 | break; |
5791 | } | |
5792 | } | |
5793 | ||
5794 | /* Output debugging information to mark a function entry point or end point. | |
5795 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5796 | ||
5797 | void | |
39e6acbd | 5798 | s_func (int end_p) |
252b5132 RH |
5799 | { |
5800 | do_s_func (end_p, NULL); | |
5801 | } | |
5802 | ||
5803 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5804 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5805 | ||
87c245cc | 5806 | static void |
39e6acbd | 5807 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5808 | { |
5809 | /* Record the current function so that we can issue an error message for | |
5810 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5811 | arguments. */ | |
5812 | static char *current_name; | |
5813 | static char *current_label; | |
5814 | ||
5815 | if (end_p) | |
5816 | { | |
5817 | if (current_name == NULL) | |
5818 | { | |
5819 | as_bad (_("missing .func")); | |
5820 | ignore_rest_of_line (); | |
5821 | return; | |
5822 | } | |
5823 | ||
5824 | if (debug_type == DEBUG_STABS) | |
5825 | stabs_generate_asm_endfunc (current_name, current_label); | |
5826 | ||
5827 | current_name = current_label = NULL; | |
5828 | } | |
5829 | else /* ! end_p */ | |
5830 | { | |
041ff4dd NC |
5831 | char *name, *label; |
5832 | char delim1, delim2; | |
252b5132 RH |
5833 | |
5834 | if (current_name != NULL) | |
5835 | { | |
5836 | as_bad (_(".endfunc missing for previous .func")); | |
5837 | ignore_rest_of_line (); | |
5838 | return; | |
5839 | } | |
5840 | ||
5841 | name = input_line_pointer; | |
5842 | delim1 = get_symbol_end (); | |
5843 | name = xstrdup (name); | |
5844 | *input_line_pointer = delim1; | |
5845 | SKIP_WHITESPACE (); | |
5846 | if (*input_line_pointer != ',') | |
5847 | { | |
5848 | if (default_prefix) | |
05f4ab67 AM |
5849 | { |
5850 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
5851 | as_fatal ("%s", xstrerror (errno)); | |
5852 | } | |
252b5132 RH |
5853 | else |
5854 | { | |
7be1c489 | 5855 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
5856 | /* Missing entry point, use function's name with the leading |
5857 | char prepended. */ | |
5858 | if (leading_char) | |
05f4ab67 AM |
5859 | { |
5860 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
5861 | as_fatal ("%s", xstrerror (errno)); | |
5862 | } | |
252b5132 RH |
5863 | else |
5864 | label = name; | |
5865 | } | |
5866 | } | |
5867 | else | |
5868 | { | |
5869 | ++input_line_pointer; | |
5870 | SKIP_WHITESPACE (); | |
5871 | label = input_line_pointer; | |
5872 | delim2 = get_symbol_end (); | |
5873 | label = xstrdup (label); | |
5874 | *input_line_pointer = delim2; | |
5875 | } | |
5876 | ||
5877 | if (debug_type == DEBUG_STABS) | |
5878 | stabs_generate_asm_func (name, label); | |
5879 | ||
5880 | current_name = name; | |
5881 | current_label = label; | |
5882 | } | |
5883 | ||
5884 | demand_empty_rest_of_line (); | |
5885 | } | |
5886 | \f | |
041ff4dd | 5887 | void |
39e6acbd | 5888 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5889 | { |
40a4d956 | 5890 | ignore_rest_of_line (); |
252b5132 RH |
5891 | } |
5892 | ||
252b5132 | 5893 | void |
39e6acbd | 5894 | read_print_statistics (FILE *file) |
252b5132 RH |
5895 | { |
5896 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5897 | } | |
5898 | ||
041ff4dd NC |
5899 | /* Inserts the given line into the input stream. |
5900 | ||
9f10757c TW |
5901 | This call avoids macro/conditionals nesting checking, since the contents of |
5902 | the line are assumed to replace the contents of a line already scanned. | |
5903 | ||
47eebc20 | 5904 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
5905 | called by md_start_line_hook(). The given line is assumed to already be |
5906 | properly scrubbed. */ | |
5907 | ||
5908 | void | |
39e6acbd | 5909 | input_scrub_insert_line (const char *line) |
9f10757c TW |
5910 | { |
5911 | sb newline; | |
5912 | sb_new (&newline); | |
5913 | sb_add_string (&newline, line); | |
5914 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5915 | sb_kill (&newline); | |
5916 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5917 | } | |
5918 | ||
5919 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5920 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5921 | |
5922 | void | |
39e6acbd | 5923 | input_scrub_insert_file (char *path) |
9f10757c TW |
5924 | { |
5925 | input_scrub_include_file (path, input_line_pointer); | |
5926 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5927 | } | |
40a4d956 JB |
5928 | |
5929 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
5930 | ||
5931 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
5932 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
5933 | #endif | |
5934 | ||
5935 | static char * | |
7592cfd7 NC |
5936 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
5937 | int in_macro) | |
40a4d956 JB |
5938 | { |
5939 | char inquote = '\0'; | |
5940 | int inescape = 0; | |
5941 | ||
5942 | while (!is_end_of_line[(unsigned char) *s] | |
5943 | || (inquote && !ISCNTRL (*s)) | |
5944 | || (inquote == '\'' && flag_mri) | |
5945 | #ifdef TC_EOL_IN_INSN | |
5946 | || (insn && TC_EOL_IN_INSN (s)) | |
5947 | #endif | |
7592cfd7 NC |
5948 | /* PR 6926: When we are parsing the body of a macro the sequence |
5949 | \@ is special - it refers to the invocation count. If the @ | |
5950 | character happens to be registered as a line-separator character | |
5951 | by the target, then the is_end_of_line[] test above will have | |
5952 | returned true, but we need to ignore the line separating | |
5953 | semantics in this particular case. */ | |
5954 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
5955 | ) |
5956 | { | |
5957 | if (mri_string && *s == '\'') | |
5958 | inquote ^= *s; | |
5959 | else if (inescape) | |
5960 | inescape = 0; | |
5961 | else if (*s == '\\') | |
5962 | inescape = 1; | |
5963 | else if (!inquote | |
5964 | ? *s == '"' | |
5965 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
5966 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
5967 | #endif | |
5968 | : *s == inquote) | |
5969 | inquote ^= *s; | |
5970 | ++s; | |
5971 | } | |
5972 | if (inquote) | |
5973 | as_warn (_("missing closing `%c'"), inquote); | |
5974 | if (inescape) | |
5975 | as_warn (_("stray `\\'")); | |
5976 | return s; | |
5977 | } | |
5978 | ||
5979 | char * | |
5980 | find_end_of_line (char *s, int mri_string) | |
5981 | { | |
7592cfd7 | 5982 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 5983 | } |