Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
f7e42eb4 | 2 | Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
7ddd14de | 3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
e5604d79 | 4 | Free Software Foundation, Inc. |
252b5132 | 5 | |
ec2655a6 | 6 | This file is part of GAS, the GNU Assembler. |
252b5132 | 7 | |
ec2655a6 NC |
8 | GAS is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3, or (at your option) | |
11 | any later version. | |
252b5132 | 12 | |
ec2655a6 NC |
13 | GAS is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
ec2655a6 NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
59c871b4 | 23 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
041ff4dd NC |
24 | But then, GNU isn't spozed to run on your machine anyway. |
25 | (RMS is so shortsighted sometimes.) */ | |
041ff4dd | 26 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 27 | |
252b5132 | 28 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 29 | grow when we do 4361 style flonums. */ |
252b5132 RH |
30 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
31 | ||
47eebc20 | 32 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
33 | Another group of these functions is in the expr.c module. */ |
34 | ||
252b5132 | 35 | #include "as.h" |
3882b010 | 36 | #include "safe-ctype.h" |
252b5132 RH |
37 | #include "subsegs.h" |
38 | #include "sb.h" | |
39 | #include "macro.h" | |
40 | #include "obstack.h" | |
252b5132 | 41 | #include "ecoff.h" |
54cfded0 | 42 | #include "dw2gencfi.h" |
252b5132 RH |
43 | |
44 | #ifndef TC_START_LABEL | |
d1a6c242 | 45 | #define TC_START_LABEL(x,y) (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 NC |
127 | /* In: a character. |
128 | Out: 1 if this character ends a line. */ | |
ef99799a | 129 | char is_end_of_line[256] = { |
252b5132 | 130 | #ifdef CR_EOL |
b75c0c92 | 131 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 132 | #else |
b75c0c92 | 133 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 134 | #endif |
b75c0c92 AM |
135 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
136 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 137 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
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, /* */ | |
0b545448 AM |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 150 | }; |
252b5132 | 151 | |
a8a3b3b2 | 152 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
153 | char original_case_string[128]; |
154 | #endif | |
155 | ||
041ff4dd | 156 | /* Functions private to this file. */ |
252b5132 | 157 | |
041ff4dd NC |
158 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
159 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 160 | |
041ff4dd NC |
161 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
162 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
163 | internals manual. */ | |
252b5132 RH |
164 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
165 | ||
041ff4dd | 166 | /* Variables for handling include file directory table. */ |
252b5132 | 167 | |
041ff4dd NC |
168 | /* Table of pointers to directories to search for .include's. */ |
169 | char **include_dirs; | |
170 | ||
171 | /* How many are in the table. */ | |
172 | int include_dir_count; | |
173 | ||
174 | /* Length of longest in table. */ | |
175 | int include_dir_maxlen = 1; | |
252b5132 RH |
176 | |
177 | #ifndef WORKING_DOT_WORD | |
178 | struct broken_word *broken_words; | |
179 | int new_broken_words; | |
180 | #endif | |
181 | ||
182 | /* The current offset into the absolute section. We don't try to | |
183 | build frags in the absolute section, since no data can be stored | |
184 | there. We just keep track of the current offset. */ | |
185 | addressT abs_section_offset; | |
186 | ||
187 | /* If this line had an MRI style label, it is stored in this variable. | |
188 | This is used by some of the MRI pseudo-ops. */ | |
189 | symbolS *line_label; | |
190 | ||
191 | /* This global variable is used to support MRI common sections. We | |
192 | translate such sections into a common symbol. This variable is | |
193 | non-NULL when we are in an MRI common section. */ | |
194 | symbolS *mri_common_symbol; | |
195 | ||
196 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
197 | need to align to an even byte boundary unless the next pseudo-op is | |
198 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
199 | may be needed. */ | |
200 | static int mri_pending_align; | |
201 | ||
202 | #ifndef NO_LISTING | |
203 | #ifdef OBJ_ELF | |
204 | /* This variable is set to be non-zero if the next string we see might | |
205 | be the name of the source file in DWARF debugging information. See | |
206 | the comment in emit_expr for the format we look for. */ | |
207 | static int dwarf_file_string; | |
208 | #endif | |
209 | #endif | |
210 | ||
87c245cc | 211 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd KH |
212 | static void do_align (int, char *, int, int); |
213 | static void s_align (int, int); | |
caa32fe5 | 214 | static void s_altmacro (int); |
057f53c1 | 215 | static void s_bad_end (int); |
104d59d1 JM |
216 | #ifdef OBJ_ELF |
217 | static void s_gnu_attribute (int); | |
218 | #endif | |
05e9452c | 219 | static void s_reloc (int); |
39e6acbd | 220 | static int hex_float (int, char *); |
39e6acbd KH |
221 | static segT get_known_segmented_expression (expressionS * expP); |
222 | static void pobegin (void); | |
7592cfd7 | 223 | static int get_non_macro_line_sb (sb *); |
39e6acbd | 224 | static void generate_file_debug (void); |
7592cfd7 | 225 | static char *_find_end_of_line (char *, int, int, int); |
252b5132 | 226 | \f |
252b5132 | 227 | void |
39e6acbd | 228 | read_begin (void) |
252b5132 RH |
229 | { |
230 | const char *p; | |
231 | ||
232 | pobegin (); | |
233 | obj_read_begin_hook (); | |
234 | ||
235 | /* Something close -- but not too close -- to a multiple of 1024. | |
236 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
237 | obstack_begin (¬es, chunksize); | |
238 | obstack_begin (&cond_obstack, chunksize); | |
239 | ||
041ff4dd | 240 | /* Use machine dependent syntax. */ |
252b5132 RH |
241 | for (p = line_separator_chars; *p; p++) |
242 | is_end_of_line[(unsigned char) *p] = 1; | |
041ff4dd | 243 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
244 | |
245 | if (flag_mri) | |
246 | lex_type['?'] = 3; | |
247 | } | |
248 | \f | |
cc1bc22a | 249 | #ifndef TC_ADDRESS_BYTES |
cc1bc22a AM |
250 | #define TC_ADDRESS_BYTES address_bytes |
251 | ||
252 | static inline int | |
253 | address_bytes (void) | |
254 | { | |
255 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
256 | contain an address. */ | |
257 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
258 | n |= n >> 1; | |
259 | n |= n >> 2; | |
260 | n += 1; | |
261 | return n; | |
262 | } | |
263 | #endif | |
cc1bc22a | 264 | |
041ff4dd | 265 | /* Set up pseudo-op tables. */ |
252b5132 RH |
266 | |
267 | static struct hash_control *po_hash; | |
268 | ||
ef99799a | 269 | static const pseudo_typeS potable[] = { |
252b5132 RH |
270 | {"abort", s_abort, 0}, |
271 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 272 | {"altmacro", s_altmacro, 1}, |
38a57ae7 NC |
273 | {"ascii", stringer, 8+0}, |
274 | {"asciz", stringer, 8+1}, | |
252b5132 RH |
275 | {"balign", s_align_bytes, 0}, |
276 | {"balignw", s_align_bytes, -2}, | |
277 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 278 | /* block */ |
252b5132 RH |
279 | {"byte", cons, 1}, |
280 | {"comm", s_comm, 0}, | |
281 | {"common", s_mri_common, 0}, | |
282 | {"common.s", s_mri_common, 1}, | |
283 | {"data", s_data, 0}, | |
284 | {"dc", cons, 2}, | |
cc1bc22a AM |
285 | #ifdef TC_ADDRESS_BYTES |
286 | {"dc.a", cons, 0}, | |
287 | #endif | |
252b5132 RH |
288 | {"dc.b", cons, 1}, |
289 | {"dc.d", float_cons, 'd'}, | |
290 | {"dc.l", cons, 4}, | |
291 | {"dc.s", float_cons, 'f'}, | |
292 | {"dc.w", cons, 2}, | |
293 | {"dc.x", float_cons, 'x'}, | |
294 | {"dcb", s_space, 2}, | |
295 | {"dcb.b", s_space, 1}, | |
296 | {"dcb.d", s_float_space, 'd'}, | |
297 | {"dcb.l", s_space, 4}, | |
298 | {"dcb.s", s_float_space, 'f'}, | |
299 | {"dcb.w", s_space, 2}, | |
300 | {"dcb.x", s_float_space, 'x'}, | |
301 | {"ds", s_space, 2}, | |
302 | {"ds.b", s_space, 1}, | |
303 | {"ds.d", s_space, 8}, | |
304 | {"ds.l", s_space, 4}, | |
305 | {"ds.p", s_space, 12}, | |
306 | {"ds.s", s_space, 4}, | |
307 | {"ds.w", s_space, 2}, | |
308 | {"ds.x", s_space, 12}, | |
309 | {"debug", s_ignore, 0}, | |
310 | #ifdef S_SET_DESC | |
311 | {"desc", s_desc, 0}, | |
312 | #endif | |
041ff4dd | 313 | /* dim */ |
252b5132 | 314 | {"double", float_cons, 'd'}, |
041ff4dd NC |
315 | /* dsect */ |
316 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
317 | {"else", s_else, 0}, |
318 | {"elsec", s_else, 0}, | |
3fd9f047 | 319 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
320 | {"end", s_end, 0}, |
321 | {"endc", s_endif, 0}, | |
322 | {"endfunc", s_func, 1}, | |
323 | {"endif", s_endif, 0}, | |
057f53c1 JB |
324 | {"endm", s_bad_end, 0}, |
325 | {"endr", s_bad_end, 1}, | |
041ff4dd | 326 | /* endef */ |
252b5132 RH |
327 | {"equ", s_set, 0}, |
328 | {"equiv", s_set, 1}, | |
9497f5ac | 329 | {"eqv", s_set, -1}, |
252b5132 | 330 | {"err", s_err, 0}, |
d190d046 | 331 | {"error", s_errwarn, 1}, |
252b5132 | 332 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
333 | /* extend */ |
334 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 | 335 | {"appfile", s_app_file, 1}, |
93e914b2 | 336 | {"appline", s_app_line, 1}, |
252b5132 RH |
337 | {"fail", s_fail, 0}, |
338 | {"file", s_app_file, 0}, | |
339 | {"fill", s_fill, 0}, | |
340 | {"float", float_cons, 'f'}, | |
341 | {"format", s_ignore, 0}, | |
342 | {"func", s_func, 0}, | |
343 | {"global", s_globl, 0}, | |
344 | {"globl", s_globl, 0}, | |
104d59d1 JM |
345 | #ifdef OBJ_ELF |
346 | {"gnu_attribute", s_gnu_attribute, 0}, | |
347 | #endif | |
252b5132 RH |
348 | {"hword", cons, 2}, |
349 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 350 | {"ifb", s_ifb, 1}, |
252b5132 RH |
351 | {"ifc", s_ifc, 0}, |
352 | {"ifdef", s_ifdef, 0}, | |
353 | {"ifeq", s_if, (int) O_eq}, | |
354 | {"ifeqs", s_ifeqs, 0}, | |
355 | {"ifge", s_if, (int) O_ge}, | |
356 | {"ifgt", s_if, (int) O_gt}, | |
357 | {"ifle", s_if, (int) O_le}, | |
358 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 359 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
360 | {"ifnc", s_ifc, 1}, |
361 | {"ifndef", s_ifdef, 1}, | |
362 | {"ifne", s_if, (int) O_ne}, | |
363 | {"ifnes", s_ifeqs, 1}, | |
364 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 365 | {"incbin", s_incbin, 0}, |
252b5132 RH |
366 | {"include", s_include, 0}, |
367 | {"int", cons, 4}, | |
368 | {"irp", s_irp, 0}, | |
369 | {"irep", s_irp, 0}, | |
370 | {"irpc", s_irp, 1}, | |
371 | {"irepc", s_irp, 1}, | |
372 | {"lcomm", s_lcomm, 0}, | |
041ff4dd | 373 | {"lflags", listing_flags, 0}, /* Listing flags. */ |
93e914b2 | 374 | {"linefile", s_app_line, 0}, |
252b5132 | 375 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 376 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
377 | {"llen", listing_psize, 1}, |
378 | {"long", cons, 4}, | |
379 | {"lsym", s_lsym, 0}, | |
380 | {"macro", s_macro, 0}, | |
381 | {"mexit", s_mexit, 0}, | |
382 | {"mri", s_mri, 0}, | |
383 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
384 | {"name", s_ignore, 0}, | |
caa32fe5 | 385 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 386 | {"noformat", s_ignore, 0}, |
041ff4dd | 387 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
388 | {"nopage", listing_nopage, 0}, |
389 | {"octa", cons, 16}, | |
390 | {"offset", s_struct, 0}, | |
391 | {"org", s_org, 0}, | |
392 | {"p2align", s_align_ptwo, 0}, | |
393 | {"p2alignw", s_align_ptwo, -2}, | |
394 | {"p2alignl", s_align_ptwo, -4}, | |
395 | {"page", listing_eject, 0}, | |
396 | {"plen", listing_psize, 0}, | |
397 | {"print", s_print, 0}, | |
041ff4dd | 398 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
399 | {"purgem", s_purgem, 0}, |
400 | {"quad", cons, 8}, | |
05e9452c | 401 | {"reloc", s_reloc, 0}, |
252b5132 RH |
402 | {"rep", s_rept, 0}, |
403 | {"rept", s_rept, 0}, | |
404 | {"rva", s_rva, 4}, | |
041ff4dd NC |
405 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
406 | /* scl */ | |
407 | /* sect */ | |
252b5132 RH |
408 | {"set", s_set, 0}, |
409 | {"short", cons, 2}, | |
410 | {"single", float_cons, 'f'}, | |
041ff4dd | 411 | /* size */ |
252b5132 RH |
412 | {"space", s_space, 0}, |
413 | {"skip", s_space, 0}, | |
414 | {"sleb128", s_leb128, 1}, | |
415 | {"spc", s_ignore, 0}, | |
416 | {"stabd", s_stab, 'd'}, | |
417 | {"stabn", s_stab, 'n'}, | |
418 | {"stabs", s_stab, 's'}, | |
38a57ae7 NC |
419 | {"string", stringer, 8+1}, |
420 | {"string8", stringer, 8+1}, | |
421 | {"string16", stringer, 16+1}, | |
422 | {"string32", stringer, 32+1}, | |
423 | {"string64", stringer, 64+1}, | |
252b5132 | 424 | {"struct", s_struct, 0}, |
041ff4dd | 425 | /* tag */ |
252b5132 RH |
426 | {"text", s_text, 0}, |
427 | ||
428 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
429 | won't be able to use it for a while -- probably a year or more. | |
430 | But once this has been released, check with gcc maintainers | |
431 | before deleting it or even changing the spelling. */ | |
432 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
433 | /* If we're folding case -- done for some targets, not necessarily | |
434 | all -- the above string in an input file will be converted to | |
435 | this one. Match it either way... */ | |
436 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
437 | ||
041ff4dd | 438 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 439 | {"ttl", listing_title, 0}, |
041ff4dd | 440 | /* type */ |
252b5132 | 441 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
442 | /* use */ |
443 | /* val */ | |
252b5132 RH |
444 | {"xcom", s_comm, 0}, |
445 | {"xdef", s_globl, 0}, | |
446 | {"xref", s_ignore, 0}, | |
447 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 448 | {"warning", s_errwarn, 0}, |
06e77878 | 449 | {"weakref", s_weakref, 0}, |
252b5132 RH |
450 | {"word", cons, 2}, |
451 | {"zero", s_space, 0}, | |
041ff4dd | 452 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
453 | }; |
454 | ||
87c245cc BE |
455 | static offsetT |
456 | get_absolute_expr (expressionS *exp) | |
457 | { | |
9497f5ac | 458 | expression_and_evaluate (exp); |
87c245cc BE |
459 | if (exp->X_op != O_constant) |
460 | { | |
461 | if (exp->X_op != O_absent) | |
462 | as_bad (_("bad or irreducible absolute expression")); | |
463 | exp->X_add_number = 0; | |
464 | } | |
465 | return exp->X_add_number; | |
466 | } | |
467 | ||
468 | offsetT | |
469 | get_absolute_expression (void) | |
470 | { | |
471 | expressionS exp; | |
472 | ||
473 | return get_absolute_expr (&exp); | |
474 | } | |
475 | ||
252b5132 RH |
476 | static int pop_override_ok = 0; |
477 | static const char *pop_table_name; | |
478 | ||
479 | void | |
39e6acbd | 480 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
481 | { |
482 | const char *errtxt; | |
483 | const pseudo_typeS *pop; | |
484 | for (pop = table; pop->poc_name; pop++) | |
485 | { | |
486 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
487 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
488 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
489 | errtxt); | |
490 | } | |
491 | } | |
492 | ||
493 | #ifndef md_pop_insert | |
494 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
495 | #endif | |
496 | ||
497 | #ifndef obj_pop_insert | |
498 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
499 | #endif | |
500 | ||
54cfded0 AM |
501 | #ifndef cfi_pop_insert |
502 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
503 | #endif | |
504 | ||
041ff4dd | 505 | static void |
39e6acbd | 506 | pobegin (void) |
252b5132 RH |
507 | { |
508 | po_hash = hash_new (); | |
509 | ||
041ff4dd | 510 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
511 | pop_table_name = "md"; |
512 | md_pop_insert (); | |
513 | ||
041ff4dd | 514 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
515 | pop_table_name = "obj"; |
516 | pop_override_ok = 1; | |
517 | obj_pop_insert (); | |
518 | ||
041ff4dd | 519 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
520 | pop_table_name = "standard"; |
521 | pop_insert (potable); | |
d6415f6c | 522 | |
54cfded0 AM |
523 | #ifdef TARGET_USE_CFIPOP |
524 | pop_table_name = "cfi"; | |
525 | pop_override_ok = 1; | |
526 | cfi_pop_insert (); | |
527 | #endif | |
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 RH |
590 | { |
591 | register char c; | |
041ff4dd | 592 | register char *s; /* String of symbol, '\0' appended. */ |
252b5132 RH |
593 | register int temp; |
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 | { | |
041ff4dd | 622 | /* We have more of this buffer to parse. */ |
252b5132 | 623 | |
041ff4dd NC |
624 | /* We now have input_line_pointer->1st char of next line. |
625 | If input_line_pointer [-1] == '\n' then we just | |
626 | scanned another line: so bump line counters. */ | |
252b5132 RH |
627 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
628 | { | |
629 | #ifdef md_start_line_hook | |
630 | md_start_line_hook (); | |
631 | #endif | |
252b5132 RH |
632 | if (input_line_pointer[-1] == '\n') |
633 | bump_line_counters (); | |
634 | ||
635 | line_label = NULL; | |
636 | ||
abd63a32 | 637 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
638 | { |
639 | /* Text at the start of a line must be a label, we | |
640 | run down and stick a colon in. */ | |
641 | if (is_name_beginner (*input_line_pointer)) | |
642 | { | |
643 | char *line_start = input_line_pointer; | |
644 | char c; | |
645 | int mri_line_macro; | |
646 | ||
647 | LISTING_NEWLINE (); | |
648 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
649 | ||
650 | c = get_symbol_end (); | |
651 | ||
652 | /* In MRI mode, the EQU and MACRO pseudoops must | |
653 | be handled specially. */ | |
654 | mri_line_macro = 0; | |
655 | if (flag_m68k_mri) | |
656 | { | |
657 | char *rest = input_line_pointer + 1; | |
658 | ||
659 | if (*rest == ':') | |
660 | ++rest; | |
661 | if (*rest == ' ' || *rest == '\t') | |
662 | ++rest; | |
663 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
664 | || strncasecmp (rest, "SET", 3) == 0) | |
665 | && (rest[3] == ' ' || rest[3] == '\t')) | |
666 | { | |
667 | input_line_pointer = rest + 3; | |
668 | equals (line_start, | |
669 | strncasecmp (rest, "SET", 3) == 0); | |
670 | continue; | |
671 | } | |
672 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
673 | && (rest[5] == ' ' | |
674 | || rest[5] == '\t' | |
675 | || is_end_of_line[(unsigned char) rest[5]])) | |
676 | mri_line_macro = 1; | |
677 | } | |
678 | ||
679 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
680 | pseudo-op specially: we don't want to put the |
681 | symbol in the symbol table. */ | |
041ff4dd | 682 | if (!mri_line_macro |
a25c045a | 683 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
684 | && TC_START_LABEL_WITHOUT_COLON(c, |
685 | input_line_pointer) | |
a25c045a | 686 | #endif |
ef99799a | 687 | ) |
252b5132 RH |
688 | line_label = colon (line_start); |
689 | else | |
690 | line_label = symbol_create (line_start, | |
691 | absolute_section, | |
692 | (valueT) 0, | |
693 | &zero_address_frag); | |
694 | ||
695 | *input_line_pointer = c; | |
696 | if (c == ':') | |
697 | input_line_pointer++; | |
698 | } | |
699 | } | |
700 | } | |
701 | ||
47eebc20 | 702 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
703 | We expect a well-formed assembler statement. |
704 | A "symbol-name:" is a statement. | |
f0e652b4 | 705 | |
041ff4dd NC |
706 | Depending on what compiler is used, the order of these tests |
707 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
708 | Each test is independent of all other tests at the (top) |
709 | level. */ | |
710 | do | |
041ff4dd | 711 | c = *input_line_pointer++; |
d2bdaea8 | 712 | while (c == '\t' || c == ' ' || c == '\f'); |
252b5132 RH |
713 | |
714 | #ifndef NO_LISTING | |
715 | /* If listing is on, and we are expanding a macro, then give | |
716 | the listing code the contents of the expanded line. */ | |
717 | if (listing) | |
718 | { | |
719 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
720 | { | |
721 | char *copy; | |
722 | int len; | |
723 | ||
724 | /* Find the end of the current expanded macro line. */ | |
40a4d956 | 725 | s = find_end_of_line (input_line_pointer - 1, flag_m68k_mri); |
252b5132 | 726 | |
5e75c3ab JB |
727 | if (s != last_eol) |
728 | { | |
729 | last_eol = s; | |
730 | /* Copy it for safe keeping. Also give an indication of | |
731 | how much macro nesting is involved at this point. */ | |
732 | len = s - (input_line_pointer - 1); | |
733 | copy = (char *) xmalloc (len + macro_nest + 2); | |
734 | memset (copy, '>', macro_nest); | |
735 | copy[macro_nest] = ' '; | |
736 | memcpy (copy + macro_nest + 1, input_line_pointer - 1, len); | |
737 | copy[macro_nest + 1 + len] = '\0'; | |
738 | ||
739 | /* Install the line with the listing facility. */ | |
740 | listing_newline (copy); | |
741 | } | |
252b5132 RH |
742 | } |
743 | else | |
744 | listing_newline (NULL); | |
745 | } | |
746 | #endif | |
041ff4dd NC |
747 | /* C is the 1st significant character. |
748 | Input_line_pointer points after that character. */ | |
252b5132 RH |
749 | if (is_name_beginner (c)) |
750 | { | |
041ff4dd | 751 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
752 | HANDLE_CONDITIONAL_ASSEMBLY (); |
753 | ||
754 | s = --input_line_pointer; | |
041ff4dd NC |
755 | c = get_symbol_end (); /* name's delimiter. */ |
756 | ||
757 | /* C is character after symbol. | |
d6415f6c AM |
758 | That character's place in the input line is now '\0'. |
759 | S points to the beginning of the symbol. | |
760 | [In case of pseudo-op, s->'.'.] | |
761 | Input_line_pointer->'\0' where c was. */ | |
041ff4dd | 762 | if (TC_START_LABEL (c, input_line_pointer)) |
252b5132 RH |
763 | { |
764 | if (flag_m68k_mri) | |
765 | { | |
766 | char *rest = input_line_pointer + 1; | |
767 | ||
768 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
769 | if (*rest == ':') |
770 | ++rest; | |
f0e652b4 | 771 | |
252b5132 RH |
772 | if (*rest == ' ' || *rest == '\t') |
773 | ++rest; | |
f0e652b4 | 774 | |
252b5132 RH |
775 | if ((strncasecmp (rest, "EQU", 3) == 0 |
776 | || strncasecmp (rest, "SET", 3) == 0) | |
777 | && (rest[3] == ' ' || rest[3] == '\t')) | |
778 | { | |
779 | input_line_pointer = rest + 3; | |
780 | equals (s, 1); | |
781 | continue; | |
782 | } | |
783 | } | |
784 | ||
041ff4dd NC |
785 | line_label = colon (s); /* User-defined label. */ |
786 | /* Put ':' back for error messages' sake. */ | |
787 | *input_line_pointer++ = ':'; | |
a645d1eb L |
788 | #ifdef tc_check_label |
789 | tc_check_label (line_label); | |
790 | #endif | |
041ff4dd | 791 | /* Input_line_pointer->after ':'. */ |
252b5132 | 792 | SKIP_WHITESPACE (); |
252b5132 | 793 | } |
18d7868b HPN |
794 | else if ((c == '=' && input_line_pointer[1] == '=') |
795 | || ((c == ' ' || c == '\t') | |
796 | && input_line_pointer[1] == '=' | |
797 | && input_line_pointer[2] == '=')) | |
9497f5ac NC |
798 | { |
799 | equals (s, -1); | |
800 | demand_empty_rest_of_line (); | |
801 | } | |
ee3c9814 CM |
802 | else if ((c == '=' |
803 | || ((c == ' ' || c == '\t') | |
804 | && input_line_pointer[1] == '=')) | |
805 | #ifdef TC_EQUAL_IN_INSN | |
806 | && !TC_EQUAL_IN_INSN (c, s) | |
807 | #endif | |
808 | ) | |
252b5132 RH |
809 | { |
810 | equals (s, 1); | |
811 | demand_empty_rest_of_line (); | |
812 | } | |
813 | else | |
041ff4dd NC |
814 | { |
815 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
816 | pop = NULL; |
817 | ||
a8a3b3b2 | 818 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
819 | { |
820 | char *s2 = s; | |
37d8bb27 NC |
821 | |
822 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
823 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 824 | |
252b5132 RH |
825 | while (*s2) |
826 | { | |
3882b010 | 827 | *s2 = TOLOWER (*s2); |
252b5132 RH |
828 | s2++; |
829 | } | |
830 | } | |
831 | #endif | |
abd63a32 | 832 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 833 | { |
7be1c489 AM |
834 | /* The MRI assembler uses pseudo-ops without |
835 | a period. */ | |
252b5132 RH |
836 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
837 | if (pop != NULL && pop->poc_handler == NULL) | |
838 | pop = NULL; | |
839 | } | |
840 | ||
841 | if (pop != NULL | |
041ff4dd | 842 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 843 | { |
041ff4dd | 844 | /* PSEUDO - OP. |
f0e652b4 | 845 | |
d6415f6c AM |
846 | WARNING: c has next char, which may be end-of-line. |
847 | We lookup the pseudo-op table with s+1 because we | |
848 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
849 | |
850 | if (pop == NULL) | |
851 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
852 | if (pop && !pop->poc_handler) |
853 | pop = NULL; | |
252b5132 RH |
854 | |
855 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
856 | automatic alignment directive. What a hack |
857 | this is. */ | |
252b5132 RH |
858 | if (mri_pending_align |
859 | && (pop == NULL | |
041ff4dd NC |
860 | || !((pop->poc_handler == cons |
861 | && pop->poc_val == 1) | |
862 | || (pop->poc_handler == s_space | |
863 | && pop->poc_val == 1) | |
252b5132 | 864 | #ifdef tc_conditional_pseudoop |
041ff4dd | 865 | || tc_conditional_pseudoop (pop) |
252b5132 | 866 | #endif |
041ff4dd NC |
867 | || pop->poc_handler == s_if |
868 | || pop->poc_handler == s_ifdef | |
869 | || pop->poc_handler == s_ifc | |
870 | || pop->poc_handler == s_ifeqs | |
871 | || pop->poc_handler == s_else | |
872 | || pop->poc_handler == s_endif | |
873 | || pop->poc_handler == s_globl | |
874 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
875 | { |
876 | do_align (1, (char *) NULL, 0, 0); | |
877 | mri_pending_align = 0; | |
f0e652b4 | 878 | |
252b5132 RH |
879 | if (line_label != NULL) |
880 | { | |
2b47531b | 881 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
882 | S_SET_VALUE (line_label, frag_now_fix ()); |
883 | } | |
884 | } | |
885 | ||
041ff4dd | 886 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
887 | if (pop == NULL) |
888 | { | |
5e75c3ab JB |
889 | char *end = input_line_pointer; |
890 | ||
252b5132 RH |
891 | *input_line_pointer = c; |
892 | s_ignore (0); | |
5e75c3ab JB |
893 | c = *--input_line_pointer; |
894 | *input_line_pointer = '\0'; | |
895 | if (! macro_defined || ! try_macro (c, s)) | |
896 | { | |
897 | *end = '\0'; | |
898 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
899 | *input_line_pointer++ = c; | |
900 | } | |
252b5132 RH |
901 | continue; |
902 | } | |
903 | ||
041ff4dd | 904 | /* Put it back for error messages etc. */ |
252b5132 RH |
905 | *input_line_pointer = c; |
906 | /* The following skip of whitespace is compulsory. | |
907 | A well shaped space is sometimes all that separates | |
041ff4dd | 908 | keyword from operands. */ |
252b5132 RH |
909 | if (c == ' ' || c == '\t') |
910 | input_line_pointer++; | |
041ff4dd NC |
911 | |
912 | /* Input_line is restored. | |
d6415f6c AM |
913 | Input_line_pointer->1st non-blank char |
914 | after pseudo-operation. */ | |
252b5132 RH |
915 | (*pop->poc_handler) (pop->poc_val); |
916 | ||
917 | /* If that was .end, just get out now. */ | |
918 | if (pop->poc_handler == s_end) | |
919 | goto quit; | |
920 | } | |
921 | else | |
922 | { | |
041ff4dd NC |
923 | /* WARNING: c has char, which may be end-of-line. */ |
924 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 | 925 | *input_line_pointer = c; |
7592cfd7 | 926 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
252b5132 RH |
927 | c = *input_line_pointer; |
928 | *input_line_pointer = '\0'; | |
929 | ||
930 | generate_lineno_debug (); | |
931 | ||
5e75c3ab JB |
932 | if (macro_defined && try_macro (c, s)) |
933 | continue; | |
252b5132 RH |
934 | |
935 | if (mri_pending_align) | |
936 | { | |
937 | do_align (1, (char *) NULL, 0, 0); | |
938 | mri_pending_align = 0; | |
939 | if (line_label != NULL) | |
940 | { | |
2b47531b | 941 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
942 | S_SET_VALUE (line_label, frag_now_fix ()); |
943 | } | |
944 | } | |
945 | ||
041ff4dd | 946 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
947 | |
948 | *input_line_pointer++ = c; | |
949 | ||
950 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
951 | this instruction. */ |
952 | } | |
953 | } | |
252b5132 | 954 | continue; |
041ff4dd | 955 | } |
252b5132 RH |
956 | |
957 | /* Empty statement? */ | |
958 | if (is_end_of_line[(unsigned char) c]) | |
959 | continue; | |
960 | ||
3882b010 | 961 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 962 | { |
041ff4dd | 963 | /* local label ("4:") */ |
252b5132 RH |
964 | char *backup = input_line_pointer; |
965 | ||
966 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
967 | ||
968 | temp = c - '0'; | |
969 | ||
041ff4dd | 970 | /* Read the whole number. */ |
3882b010 | 971 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
972 | { |
973 | temp = (temp * 10) + *input_line_pointer - '0'; | |
974 | ++input_line_pointer; | |
041ff4dd | 975 | } |
252b5132 RH |
976 | |
977 | if (LOCAL_LABELS_DOLLAR | |
978 | && *input_line_pointer == '$' | |
979 | && *(input_line_pointer + 1) == ':') | |
980 | { | |
981 | input_line_pointer += 2; | |
982 | ||
983 | if (dollar_label_defined (temp)) | |
984 | { | |
985 | as_fatal (_("label \"%d$\" redefined"), temp); | |
986 | } | |
987 | ||
988 | define_dollar_label (temp); | |
989 | colon (dollar_label_name (temp, 0)); | |
990 | continue; | |
991 | } | |
992 | ||
993 | if (LOCAL_LABELS_FB | |
994 | && *input_line_pointer++ == ':') | |
995 | { | |
996 | fb_label_instance_inc (temp); | |
997 | colon (fb_label_name (temp, 0)); | |
998 | continue; | |
999 | } | |
1000 | ||
1001 | input_line_pointer = backup; | |
1002 | } /* local label ("4:") */ | |
1003 | ||
1004 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 1005 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1006 | sb sbuf; |
252b5132 RH |
1007 | char *ends; |
1008 | char *new_buf; | |
1009 | char *new_tmp; | |
1010 | unsigned int new_length; | |
1011 | char *tmp_buf = 0; | |
1012 | ||
252b5132 RH |
1013 | s = input_line_pointer; |
1014 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1015 | { |
1016 | /* We ignore it. */ | |
1017 | ignore_rest_of_line (); | |
1018 | continue; | |
1019 | } | |
1020 | bump_line_counters (); | |
252b5132 RH |
1021 | s += 4; |
1022 | ||
64e55042 | 1023 | sb_new (&sbuf); |
252b5132 RH |
1024 | ends = strstr (s, "#NO_APP\n"); |
1025 | ||
1026 | if (!ends) | |
1027 | { | |
1028 | unsigned int tmp_len; | |
1029 | unsigned int num; | |
1030 | ||
1031 | /* The end of the #APP wasn't in this buffer. We | |
1032 | keep reading in buffers until we find the #NO_APP | |
1033 | that goes with this #APP There is one. The specs | |
47eebc20 | 1034 | guarantee it... */ |
252b5132 RH |
1035 | tmp_len = buffer_limit - s; |
1036 | tmp_buf = xmalloc (tmp_len + 1); | |
1037 | memcpy (tmp_buf, s, tmp_len); | |
1038 | do | |
1039 | { | |
1040 | new_tmp = input_scrub_next_buffer (&buffer); | |
1041 | if (!new_tmp) | |
1042 | break; | |
1043 | else | |
1044 | buffer_limit = new_tmp; | |
1045 | input_line_pointer = buffer; | |
1046 | ends = strstr (buffer, "#NO_APP\n"); | |
1047 | if (ends) | |
1048 | num = ends - buffer; | |
1049 | else | |
1050 | num = buffer_limit - buffer; | |
1051 | ||
1052 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
1053 | memcpy (tmp_buf + tmp_len, buffer, num); | |
1054 | tmp_len += num; | |
1055 | } | |
1056 | while (!ends); | |
1057 | ||
1058 | input_line_pointer = ends ? ends + 8 : NULL; | |
1059 | ||
1060 | s = tmp_buf; | |
1061 | ends = s + tmp_len; | |
1062 | ||
1063 | } | |
1064 | else | |
1065 | { | |
1066 | input_line_pointer = ends + 8; | |
1067 | } | |
1068 | ||
1069 | scrub_string = s; | |
1070 | scrub_string_end = ends; | |
1071 | ||
1072 | new_length = ends - s; | |
1073 | new_buf = (char *) xmalloc (new_length); | |
1074 | new_tmp = new_buf; | |
1075 | for (;;) | |
1076 | { | |
1077 | int space; | |
1078 | int size; | |
1079 | ||
1080 | space = (new_buf + new_length) - new_tmp; | |
1081 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1082 | ||
1083 | if (size < space) | |
1084 | { | |
64e55042 | 1085 | new_tmp[size] = 0; |
252b5132 RH |
1086 | break; |
1087 | } | |
1088 | ||
1089 | new_buf = xrealloc (new_buf, new_length + 100); | |
1090 | new_tmp = new_buf + new_length; | |
1091 | new_length += 100; | |
1092 | } | |
1093 | ||
1094 | if (tmp_buf) | |
1095 | free (tmp_buf); | |
f0e652b4 | 1096 | |
64e55042 HPN |
1097 | /* We've "scrubbed" input to the preferred format. In the |
1098 | process we may have consumed the whole of the remaining | |
1099 | file (and included files). We handle this formatted | |
1100 | input similar to that of macro expansion, letting | |
1101 | actual macro expansion (possibly nested) and other | |
1102 | input expansion work. Beware that in messages, line | |
1103 | numbers and possibly file names will be incorrect. */ | |
1104 | sb_add_string (&sbuf, new_buf); | |
1105 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); | |
1106 | sb_kill (&sbuf); | |
1107 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1108 | free (new_buf); | |
252b5132 RH |
1109 | continue; |
1110 | } | |
1111 | ||
1112 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1113 | ||
1114 | #ifdef tc_unrecognized_line | |
1115 | if (tc_unrecognized_line (c)) | |
1116 | continue; | |
1117 | #endif | |
0e389e77 | 1118 | input_line_pointer--; |
601e61cd | 1119 | /* Report unknown char as error. */ |
c95b35a9 | 1120 | demand_empty_rest_of_line (); |
041ff4dd | 1121 | } |
252b5132 RH |
1122 | |
1123 | #ifdef md_after_pass_hook | |
1124 | md_after_pass_hook (); | |
1125 | #endif | |
041ff4dd | 1126 | } |
252b5132 RH |
1127 | |
1128 | quit: | |
1129 | ||
1130 | #ifdef md_cleanup | |
041ff4dd | 1131 | md_cleanup (); |
252b5132 | 1132 | #endif |
041ff4dd NC |
1133 | /* Close the input file. */ |
1134 | input_scrub_close (); | |
4c400d5e AM |
1135 | #ifdef WARN_COMMENTS |
1136 | { | |
1137 | if (warn_comment && found_comment) | |
1138 | as_warn_where (found_comment_file, found_comment, | |
1139 | "first comment found here"); | |
1140 | } | |
1141 | #endif | |
252b5132 RH |
1142 | } |
1143 | ||
e5604d79 RS |
1144 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
1145 | Take the sign of the number from X_unsigned rather than X_add_number. */ | |
1146 | ||
1147 | static void | |
1148 | convert_to_bignum (expressionS *exp) | |
1149 | { | |
1150 | valueT value; | |
1151 | unsigned int i; | |
1152 | ||
1153 | value = exp->X_add_number; | |
1154 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1155 | { | |
1156 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1157 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1158 | } | |
1159 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1160 | the sign of the original value. */ | |
1161 | if ((exp->X_add_number < 0) != !exp->X_unsigned) | |
1162 | generic_bignum[i++] = exp->X_unsigned ? 0 : LITTLENUM_MASK; | |
1163 | exp->X_op = O_big; | |
1164 | exp->X_add_number = i; | |
1165 | } | |
1166 | ||
252b5132 RH |
1167 | /* For most MRI pseudo-ops, the line actually ends at the first |
1168 | nonquoted space. This function looks for that point, stuffs a null | |
1169 | in, and sets *STOPCP to the character that used to be there, and | |
1170 | returns the location. | |
1171 | ||
1172 | Until I hear otherwise, I am going to assume that this is only true | |
1173 | for the m68k MRI assembler. */ | |
1174 | ||
1175 | char * | |
39e6acbd | 1176 | mri_comment_field (char *stopcp) |
252b5132 | 1177 | { |
252b5132 | 1178 | char *s; |
041ff4dd | 1179 | #ifdef TC_M68K |
252b5132 RH |
1180 | int inquote = 0; |
1181 | ||
1182 | know (flag_m68k_mri); | |
1183 | ||
1184 | for (s = input_line_pointer; | |
041ff4dd | 1185 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1186 | || inquote); |
1187 | s++) | |
1188 | { | |
1189 | if (*s == '\'') | |
041ff4dd | 1190 | inquote = !inquote; |
252b5132 | 1191 | } |
252b5132 | 1192 | #else |
041ff4dd NC |
1193 | for (s = input_line_pointer; |
1194 | !is_end_of_line[(unsigned char) *s]; | |
1195 | s++) | |
252b5132 | 1196 | ; |
041ff4dd | 1197 | #endif |
252b5132 RH |
1198 | *stopcp = *s; |
1199 | *s = '\0'; | |
f0e652b4 | 1200 | |
252b5132 | 1201 | return s; |
252b5132 RH |
1202 | } |
1203 | ||
1204 | /* Skip to the end of an MRI comment field. */ | |
1205 | ||
1206 | void | |
39e6acbd | 1207 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1208 | { |
1209 | know (flag_mri); | |
1210 | ||
1211 | input_line_pointer = stop; | |
1212 | *stop = stopc; | |
041ff4dd | 1213 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1214 | ++input_line_pointer; |
1215 | } | |
1216 | ||
041ff4dd | 1217 | void |
39e6acbd | 1218 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1219 | { |
1220 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1221 | } | |
1222 | ||
1223 | /* Guts of .align directive. N is the power of two to which to align. | |
1224 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1225 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1226 | the maximum number of characters to skip when doing the alignment, | |
1227 | or 0 if there is no maximum. */ | |
1228 | ||
041ff4dd | 1229 | static void |
39e6acbd | 1230 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1231 | { |
ebeb9253 AM |
1232 | if (now_seg == absolute_section) |
1233 | { | |
1234 | if (fill != NULL) | |
1235 | while (len-- > 0) | |
1236 | if (*fill++ != '\0') | |
1237 | { | |
1238 | as_warn (_("ignoring fill value in absolute section")); | |
1239 | break; | |
1240 | } | |
1241 | fill = NULL; | |
1242 | len = 0; | |
1243 | } | |
1244 | ||
b8861cfb NS |
1245 | #ifdef md_flush_pending_output |
1246 | md_flush_pending_output (); | |
1247 | #endif | |
252b5132 RH |
1248 | #ifdef md_do_align |
1249 | md_do_align (n, fill, len, max, just_record_alignment); | |
1250 | #endif | |
1251 | ||
041ff4dd | 1252 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1253 | if (n != 0 && !need_pass_2) |
1254 | { | |
0a9ef439 RH |
1255 | if (fill == NULL) |
1256 | { | |
1257 | if (subseg_text_p (now_seg)) | |
1258 | frag_align_code (n, max); | |
1259 | else | |
1260 | frag_align (n, 0, max); | |
1261 | } | |
1262 | else if (len <= 1) | |
252b5132 RH |
1263 | frag_align (n, *fill, max); |
1264 | else | |
1265 | frag_align_pattern (n, fill, len, max); | |
1266 | } | |
1267 | ||
1268 | #ifdef md_do_align | |
a6bd2a4f | 1269 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1270 | #endif |
1271 | ||
bea9907b | 1272 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1273 | } |
1274 | ||
1275 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1276 | (in bytes). A negative ARG is the negative of the length of the | |
1277 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1278 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1279 | #ifndef TC_ALIGN_LIMIT |
1280 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1281 | #endif | |
9ebd302d | 1282 | |
252b5132 | 1283 | static void |
39e6acbd | 1284 | s_align (int arg, int bytes_p) |
252b5132 | 1285 | { |
11ec4ba9 | 1286 | unsigned int align_limit = TC_ALIGN_LIMIT; |
9ebd302d | 1287 | unsigned int align; |
252b5132 | 1288 | char *stop = NULL; |
fb25138b | 1289 | char stopc = 0; |
252b5132 RH |
1290 | offsetT fill = 0; |
1291 | int max; | |
1292 | int fill_p; | |
1293 | ||
1294 | if (flag_mri) | |
1295 | stop = mri_comment_field (&stopc); | |
1296 | ||
1297 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1298 | { | |
1299 | if (arg < 0) | |
1300 | align = 0; | |
1301 | else | |
041ff4dd | 1302 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1303 | } |
1304 | else | |
1305 | { | |
1306 | align = get_absolute_expression (); | |
1307 | SKIP_WHITESPACE (); | |
1308 | } | |
1309 | ||
1310 | if (bytes_p) | |
1311 | { | |
1312 | /* Convert to a power of 2. */ | |
1313 | if (align != 0) | |
1314 | { | |
1315 | unsigned int i; | |
1316 | ||
1317 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1318 | ; | |
1319 | if (align != 1) | |
0e389e77 | 1320 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1321 | |
252b5132 RH |
1322 | align = i; |
1323 | } | |
1324 | } | |
1325 | ||
b617dc20 | 1326 | if (align > align_limit) |
252b5132 | 1327 | { |
b617dc20 | 1328 | align = align_limit; |
0e389e77 | 1329 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1330 | } |
1331 | ||
1332 | if (*input_line_pointer != ',') | |
1333 | { | |
1334 | fill_p = 0; | |
1335 | max = 0; | |
1336 | } | |
1337 | else | |
1338 | { | |
1339 | ++input_line_pointer; | |
1340 | if (*input_line_pointer == ',') | |
1341 | fill_p = 0; | |
1342 | else | |
1343 | { | |
1344 | fill = get_absolute_expression (); | |
1345 | SKIP_WHITESPACE (); | |
1346 | fill_p = 1; | |
1347 | } | |
1348 | ||
1349 | if (*input_line_pointer != ',') | |
1350 | max = 0; | |
1351 | else | |
1352 | { | |
1353 | ++input_line_pointer; | |
1354 | max = get_absolute_expression (); | |
1355 | } | |
1356 | } | |
1357 | ||
041ff4dd | 1358 | if (!fill_p) |
252b5132 RH |
1359 | { |
1360 | if (arg < 0) | |
1361 | as_warn (_("expected fill pattern missing")); | |
1362 | do_align (align, (char *) NULL, 0, max); | |
1363 | } | |
1364 | else | |
1365 | { | |
1366 | int fill_len; | |
1367 | ||
1368 | if (arg >= 0) | |
1369 | fill_len = 1; | |
1370 | else | |
041ff4dd | 1371 | fill_len = -arg; |
252b5132 RH |
1372 | if (fill_len <= 1) |
1373 | { | |
1374 | char fill_char; | |
1375 | ||
1376 | fill_char = fill; | |
1377 | do_align (align, &fill_char, fill_len, max); | |
1378 | } | |
1379 | else | |
1380 | { | |
1381 | char ab[16]; | |
1382 | ||
1383 | if ((size_t) fill_len > sizeof ab) | |
1384 | abort (); | |
1385 | md_number_to_chars (ab, fill, fill_len); | |
1386 | do_align (align, ab, fill_len, max); | |
1387 | } | |
1388 | } | |
1389 | ||
1390 | demand_empty_rest_of_line (); | |
1391 | ||
1392 | if (flag_mri) | |
1393 | mri_comment_end (stop, stopc); | |
1394 | } | |
1395 | ||
1396 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1397 | align to a 4 byte boundary. */ | |
1398 | ||
041ff4dd | 1399 | void |
39e6acbd | 1400 | s_align_bytes (int arg) |
252b5132 RH |
1401 | { |
1402 | s_align (arg, 1); | |
1403 | } | |
1404 | ||
1405 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1406 | to a 2**4 boundary. */ | |
1407 | ||
041ff4dd | 1408 | void |
39e6acbd | 1409 | s_align_ptwo (int arg) |
252b5132 RH |
1410 | { |
1411 | s_align (arg, 0); | |
1412 | } | |
1413 | ||
caa32fe5 NC |
1414 | /* Switch in and out of alternate macro mode. */ |
1415 | ||
1416 | void | |
1417 | s_altmacro (int on) | |
1418 | { | |
1419 | demand_empty_rest_of_line (); | |
1420 | macro_set_alternate (on); | |
1421 | } | |
1422 | ||
e13bab5a AM |
1423 | symbolS * |
1424 | s_comm_internal (int param, | |
1425 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1426 | { |
e13bab5a AM |
1427 | char *name; |
1428 | char c; | |
1429 | char *p; | |
1430 | offsetT temp, size; | |
1431 | symbolS *symbolP = NULL; | |
252b5132 | 1432 | char *stop = NULL; |
fb25138b | 1433 | char stopc = 0; |
e13bab5a | 1434 | expressionS exp; |
252b5132 RH |
1435 | |
1436 | if (flag_mri) | |
1437 | stop = mri_comment_field (&stopc); | |
1438 | ||
1439 | name = input_line_pointer; | |
1440 | c = get_symbol_end (); | |
041ff4dd | 1441 | /* Just after name is now '\0'. */ |
252b5132 RH |
1442 | p = input_line_pointer; |
1443 | *p = c; | |
0e389e77 AM |
1444 | |
1445 | if (name == p) | |
1446 | { | |
1447 | as_bad (_("expected symbol name")); | |
40a4d956 | 1448 | ignore_rest_of_line (); |
e13bab5a | 1449 | goto out; |
0e389e77 AM |
1450 | } |
1451 | ||
252b5132 | 1452 | SKIP_WHITESPACE (); |
f0e652b4 | 1453 | |
e13bab5a AM |
1454 | /* Accept an optional comma after the name. The comma used to be |
1455 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1456 | if (*input_line_pointer == ',') | |
1457 | input_line_pointer++; | |
1458 | ||
e13bab5a AM |
1459 | temp = get_absolute_expr (&exp); |
1460 | size = temp; | |
e13bab5a | 1461 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1462 | if (exp.X_op == O_absent) |
252b5132 | 1463 | { |
e13bab5a | 1464 | as_bad (_("missing size expression")); |
252b5132 | 1465 | ignore_rest_of_line (); |
e13bab5a | 1466 | goto out; |
252b5132 | 1467 | } |
e13bab5a | 1468 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1469 | { |
e13bab5a | 1470 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1471 | ignore_rest_of_line (); |
e13bab5a | 1472 | goto out; |
252b5132 | 1473 | } |
f0e652b4 | 1474 | |
a207757e | 1475 | *p = 0; |
252b5132 | 1476 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1477 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1478 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1479 | { |
92757bc9 JB |
1480 | if (!S_IS_VOLATILE (symbolP)) |
1481 | { | |
1482 | symbolP = NULL; | |
1483 | as_bad (_("symbol `%s' is already defined"), name); | |
1484 | *p = c; | |
1485 | ignore_rest_of_line (); | |
1486 | goto out; | |
1487 | } | |
89cdfe57 | 1488 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1489 | S_SET_SEGMENT (symbolP, undefined_section); |
1490 | S_SET_VALUE (symbolP, 0); | |
1491 | symbol_set_frag (symbolP, &zero_address_frag); | |
1492 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1493 | } |
f0e652b4 | 1494 | |
e13bab5a AM |
1495 | size = S_GET_VALUE (symbolP); |
1496 | if (size == 0) | |
1497 | size = temp; | |
1498 | else if (size != temp) | |
1499 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1500 | name, (long) size, (long) temp); | |
1501 | ||
1502 | *p = c; | |
1503 | if (comm_parse_extra != NULL) | |
1504 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1505 | else |
1506 | { | |
e13bab5a | 1507 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1508 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1509 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
252b5132 | 1510 | #ifdef OBJ_VMS |
e13bab5a AM |
1511 | { |
1512 | extern int flag_one; | |
1513 | if (size == 0 || !flag_one) | |
1514 | S_GET_OTHER (symbolP) = const_flag; | |
1515 | } | |
1516 | #endif | |
1517 | } | |
252b5132 RH |
1518 | |
1519 | demand_empty_rest_of_line (); | |
e13bab5a | 1520 | out: |
252b5132 RH |
1521 | if (flag_mri) |
1522 | mri_comment_end (stop, stopc); | |
e13bab5a AM |
1523 | return symbolP; |
1524 | } | |
1525 | ||
1526 | void | |
1527 | s_comm (int ignore) | |
1528 | { | |
1529 | s_comm_internal (ignore, NULL); | |
1530 | } | |
252b5132 RH |
1531 | |
1532 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1533 | symbol with the appropriate name. We make s_space do the right | |
1534 | thing by increasing the size. */ | |
1535 | ||
1536 | void | |
39e6acbd | 1537 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1538 | { |
1539 | char *name; | |
1540 | char c; | |
1541 | char *alc = NULL; | |
1542 | symbolS *sym; | |
1543 | offsetT align; | |
1544 | char *stop = NULL; | |
fb25138b | 1545 | char stopc = 0; |
252b5132 | 1546 | |
041ff4dd | 1547 | if (!flag_mri) |
252b5132 RH |
1548 | { |
1549 | s_comm (0); | |
1550 | return; | |
1551 | } | |
1552 | ||
1553 | stop = mri_comment_field (&stopc); | |
1554 | ||
1555 | SKIP_WHITESPACE (); | |
1556 | ||
1557 | name = input_line_pointer; | |
3882b010 | 1558 | if (!ISDIGIT (*name)) |
252b5132 RH |
1559 | c = get_symbol_end (); |
1560 | else | |
1561 | { | |
1562 | do | |
1563 | { | |
1564 | ++input_line_pointer; | |
1565 | } | |
3882b010 | 1566 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1567 | |
252b5132 RH |
1568 | c = *input_line_pointer; |
1569 | *input_line_pointer = '\0'; | |
1570 | ||
1571 | if (line_label != NULL) | |
1572 | { | |
1573 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1574 | + (input_line_pointer - name) | |
1575 | + 1); | |
1576 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1577 | name = alc; | |
1578 | } | |
1579 | } | |
1580 | ||
1581 | sym = symbol_find_or_make (name); | |
1582 | *input_line_pointer = c; | |
1583 | if (alc != NULL) | |
1584 | free (alc); | |
1585 | ||
1586 | if (*input_line_pointer != ',') | |
1587 | align = 0; | |
1588 | else | |
1589 | { | |
1590 | ++input_line_pointer; | |
1591 | align = get_absolute_expression (); | |
1592 | } | |
1593 | ||
041ff4dd | 1594 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1595 | { |
0e389e77 | 1596 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1597 | ignore_rest_of_line (); |
1598 | mri_comment_end (stop, stopc); | |
1599 | return; | |
1600 | } | |
1601 | ||
1602 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1603 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1604 | mri_common_symbol = sym; |
1605 | ||
1606 | #ifdef S_SET_ALIGN | |
1607 | if (align != 0) | |
1608 | S_SET_ALIGN (sym, align); | |
1609 | #endif | |
1610 | ||
1611 | if (line_label != NULL) | |
1612 | { | |
2b47531b ILT |
1613 | expressionS exp; |
1614 | exp.X_op = O_symbol; | |
1615 | exp.X_add_symbol = sym; | |
1616 | exp.X_add_number = 0; | |
1617 | symbol_set_value_expression (line_label, &exp); | |
1618 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1619 | S_SET_SEGMENT (line_label, expr_section); |
1620 | } | |
1621 | ||
1622 | /* FIXME: We just ignore the small argument, which distinguishes | |
1623 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1624 | ||
1625 | /* Ignore the type and hptype. */ | |
1626 | if (*input_line_pointer == ',') | |
1627 | input_line_pointer += 2; | |
1628 | if (*input_line_pointer == ',') | |
1629 | input_line_pointer += 2; | |
1630 | ||
1631 | demand_empty_rest_of_line (); | |
1632 | ||
1633 | mri_comment_end (stop, stopc); | |
1634 | } | |
1635 | ||
1636 | void | |
39e6acbd | 1637 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1638 | { |
1639 | segT section; | |
1640 | register int temp; | |
1641 | ||
1642 | temp = get_absolute_expression (); | |
1643 | if (flag_readonly_data_in_text) | |
1644 | { | |
1645 | section = text_section; | |
1646 | temp += 1000; | |
1647 | } | |
1648 | else | |
1649 | section = data_section; | |
1650 | ||
1651 | subseg_set (section, (subsegT) temp); | |
1652 | ||
1653 | #ifdef OBJ_VMS | |
1654 | const_flag = 0; | |
1655 | #endif | |
1656 | demand_empty_rest_of_line (); | |
1657 | } | |
1658 | ||
1659 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1660 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1661 | file name. This default definition may be overridden by the object | |
1662 | or CPU specific pseudo-ops. This function is also the default | |
1663 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1664 | .file. */ | |
1665 | ||
ecb4347a | 1666 | void |
f17c130b | 1667 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1668 | { |
1669 | #ifdef LISTING | |
1670 | if (listing) | |
1671 | listing_source_file (file); | |
1672 | #endif | |
1673 | register_dependency (file); | |
1674 | #ifdef obj_app_file | |
c04f5787 | 1675 | obj_app_file (file, appfile); |
ecb4347a DJ |
1676 | #endif |
1677 | } | |
1678 | ||
041ff4dd | 1679 | void |
39e6acbd | 1680 | s_app_file (int appfile) |
252b5132 RH |
1681 | { |
1682 | register char *s; | |
1683 | int length; | |
1684 | ||
041ff4dd | 1685 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1686 | if ((s = demand_copy_string (&length)) != 0) |
1687 | { | |
252b5132 | 1688 | int may_omit |
93e914b2 | 1689 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
1690 | |
1691 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1692 | backquote. */ |
252b5132 RH |
1693 | if (flag_m68k_mri |
1694 | && *input_line_pointer == '\'' | |
1695 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1696 | ++input_line_pointer; | |
1697 | ||
1698 | demand_empty_rest_of_line (); | |
041ff4dd | 1699 | if (!may_omit) |
c04f5787 | 1700 | s_app_file_string (s, appfile); |
252b5132 RH |
1701 | } |
1702 | } | |
1703 | ||
e9fc6c21 AO |
1704 | static int |
1705 | get_linefile_number (int *flag) | |
1706 | { | |
1707 | SKIP_WHITESPACE (); | |
1708 | ||
1709 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
1710 | return 0; | |
1711 | ||
1712 | *flag = get_absolute_expression (); | |
1713 | ||
1714 | return 1; | |
1715 | } | |
1716 | ||
252b5132 RH |
1717 | /* Handle the .appline pseudo-op. This is automatically generated by |
1718 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1719 | default definition may be overridden by the object or CPU specific | |
1720 | pseudo-ops. */ | |
1721 | ||
1722 | void | |
93e914b2 | 1723 | s_app_line (int appline) |
252b5132 | 1724 | { |
e9fc6c21 | 1725 | char *file = NULL; |
252b5132 RH |
1726 | int l; |
1727 | ||
1728 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
1729 | if (appline) |
1730 | l = get_absolute_expression (); | |
1731 | else if (!get_linefile_number (&l)) | |
1732 | { | |
1733 | ignore_rest_of_line (); | |
1734 | return; | |
1735 | } | |
1736 | ||
1737 | l--; | |
47837f8e NC |
1738 | |
1739 | if (l < -1) | |
252b5132 | 1740 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
1741 | Besides, it's silly. GCC however will generate a line number of |
1742 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
1743 | ||
1744 | # 0 "<built-in>" | |
1745 | ||
1746 | We do not want to barf on this, especially since such files are used | |
1747 | in the GCC and GDB testsuites. So we check for negative line numbers | |
1748 | rather than non-positive line numbers. */ | |
0e389e77 | 1749 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1750 | l + 1); |
252b5132 RH |
1751 | else |
1752 | { | |
93e914b2 | 1753 | int flags = 0; |
93e914b2 AO |
1754 | int length = 0; |
1755 | ||
1756 | if (!appline) | |
1757 | { | |
e9fc6c21 AO |
1758 | SKIP_WHITESPACE (); |
1759 | ||
1760 | if (*input_line_pointer == '"') | |
1761 | file = demand_copy_string (&length); | |
93e914b2 AO |
1762 | |
1763 | if (file) | |
1764 | { | |
1765 | int this_flag; | |
1766 | ||
e9fc6c21 | 1767 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
1768 | switch (this_flag) |
1769 | { | |
1770 | /* From GCC's cpp documentation: | |
1771 | 1: start of a new file. | |
1772 | 2: returning to a file after having included | |
1773 | another file. | |
1774 | 3: following text comes from a system header file. | |
1775 | 4: following text should be treated as extern "C". | |
1776 | ||
1777 | 4 is nonsensical for the assembler; 3, we don't | |
1778 | care about, so we ignore it just in case a | |
1779 | system header file is included while | |
1780 | preprocessing assembly. So 1 and 2 are all we | |
1781 | care about, and they are mutually incompatible. | |
1782 | new_logical_line_flags() demands this. */ | |
1783 | case 1: | |
1784 | case 2: | |
1785 | if (flags && flags != (1 << this_flag)) | |
1786 | as_warn (_("incompatible flag %i in line directive"), | |
1787 | this_flag); | |
1788 | else | |
1789 | flags |= 1 << this_flag; | |
1790 | break; | |
1791 | ||
1792 | case 3: | |
1793 | case 4: | |
1794 | /* We ignore these. */ | |
1795 | break; | |
1796 | ||
1797 | default: | |
1798 | as_warn (_("unsupported flag %i in line directive"), | |
1799 | this_flag); | |
1800 | break; | |
1801 | } | |
e9fc6c21 AO |
1802 | |
1803 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
1804 | file = 0; | |
93e914b2 AO |
1805 | } |
1806 | } | |
1807 | ||
e9fc6c21 AO |
1808 | if (appline || file) |
1809 | { | |
1810 | new_logical_line_flags (file, l, flags); | |
252b5132 | 1811 | #ifdef LISTING |
e9fc6c21 AO |
1812 | if (listing) |
1813 | listing_source_line (l); | |
252b5132 | 1814 | #endif |
e9fc6c21 | 1815 | } |
252b5132 | 1816 | } |
e9fc6c21 AO |
1817 | if (appline || file) |
1818 | demand_empty_rest_of_line (); | |
1819 | else | |
1820 | ignore_rest_of_line (); | |
252b5132 RH |
1821 | } |
1822 | ||
1823 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1824 | read_a_source_file. */ | |
1825 | ||
1826 | void | |
39e6acbd | 1827 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1828 | { |
1829 | if (flag_mri) | |
1830 | { | |
1831 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 1832 | but we don't support that. */ |
252b5132 | 1833 | SKIP_WHITESPACE (); |
041ff4dd | 1834 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1835 | && *input_line_pointer != '*' |
1836 | && *input_line_pointer != '!') | |
1837 | as_warn (_("start address not supported")); | |
1838 | } | |
1839 | } | |
1840 | ||
1841 | /* Handle the .err pseudo-op. */ | |
1842 | ||
1843 | void | |
39e6acbd | 1844 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1845 | { |
1846 | as_bad (_(".err encountered")); | |
1847 | demand_empty_rest_of_line (); | |
d190d046 HPN |
1848 | } |
1849 | ||
1850 | /* Handle the .error and .warning pseudo-ops. */ | |
1851 | ||
1852 | void | |
1853 | s_errwarn (int err) | |
1854 | { | |
1855 | int len; | |
1856 | /* The purpose for the conditional assignment is not to | |
1857 | internationalize the directive itself, but that we need a | |
1858 | self-contained message, one that can be passed like the | |
1859 | demand_copy_C_string return value, and with no assumption on the | |
1860 | location of the name of the directive within the message. */ | |
1861 | char *msg | |
1862 | = (err ? _(".error directive invoked in source file") | |
1863 | : _(".warning directive invoked in source file")); | |
1864 | ||
1865 | if (!is_it_end_of_statement ()) | |
1866 | { | |
1867 | if (*input_line_pointer != '\"') | |
1868 | { | |
1869 | as_bad (_("%s argument must be a string"), | |
1870 | err ? ".error" : ".warning"); | |
40a4d956 | 1871 | ignore_rest_of_line (); |
d190d046 HPN |
1872 | return; |
1873 | } | |
1874 | ||
1875 | msg = demand_copy_C_string (&len); | |
1876 | if (msg == NULL) | |
1877 | return; | |
1878 | } | |
1879 | ||
1880 | if (err) | |
1881 | as_bad ("%s", msg); | |
1882 | else | |
1883 | as_warn ("%s", msg); | |
1884 | demand_empty_rest_of_line (); | |
252b5132 RH |
1885 | } |
1886 | ||
1887 | /* Handle the MRI fail pseudo-op. */ | |
1888 | ||
1889 | void | |
39e6acbd | 1890 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1891 | { |
1892 | offsetT temp; | |
1893 | char *stop = NULL; | |
fb25138b | 1894 | char stopc = 0; |
252b5132 RH |
1895 | |
1896 | if (flag_mri) | |
1897 | stop = mri_comment_field (&stopc); | |
1898 | ||
1899 | temp = get_absolute_expression (); | |
1900 | if (temp >= 500) | |
1901 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1902 | else | |
1903 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1904 | ||
1905 | demand_empty_rest_of_line (); | |
1906 | ||
1907 | if (flag_mri) | |
1908 | mri_comment_end (stop, stopc); | |
1909 | } | |
1910 | ||
041ff4dd | 1911 | void |
39e6acbd | 1912 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1913 | { |
1914 | expressionS rep_exp; | |
1915 | long size = 1; | |
1916 | register long fill = 0; | |
1917 | char *p; | |
1918 | ||
1919 | #ifdef md_flush_pending_output | |
1920 | md_flush_pending_output (); | |
1921 | #endif | |
1922 | ||
1923 | get_known_segmented_expression (&rep_exp); | |
1924 | if (*input_line_pointer == ',') | |
1925 | { | |
1926 | input_line_pointer++; | |
1927 | size = get_absolute_expression (); | |
1928 | if (*input_line_pointer == ',') | |
1929 | { | |
1930 | input_line_pointer++; | |
1931 | fill = get_absolute_expression (); | |
1932 | } | |
1933 | } | |
1934 | ||
1935 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1936 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1937 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1938 | { | |
0e389e77 | 1939 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
1940 | size = BSD_FILL_SIZE_CROCK_8; |
1941 | } | |
1942 | if (size < 0) | |
1943 | { | |
0e389e77 | 1944 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
1945 | size = 0; |
1946 | } | |
1947 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1948 | { | |
1949 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 1950 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
1951 | size = 0; |
1952 | } | |
1953 | ||
1954 | if (size && !need_pass_2) | |
1955 | { | |
1956 | if (rep_exp.X_op == O_constant) | |
1957 | { | |
1958 | p = frag_var (rs_fill, (int) size, (int) size, | |
1959 | (relax_substateT) 0, (symbolS *) 0, | |
1960 | (offsetT) rep_exp.X_add_number, | |
1961 | (char *) 0); | |
1962 | } | |
1963 | else | |
1964 | { | |
1965 | /* We don't have a constant repeat count, so we can't use | |
1966 | rs_fill. We can get the same results out of rs_space, | |
1967 | but its argument is in bytes, so we must multiply the | |
1968 | repeat count by size. */ | |
1969 | ||
1970 | symbolS *rep_sym; | |
1971 | rep_sym = make_expr_symbol (&rep_exp); | |
1972 | if (size != 1) | |
1973 | { | |
1974 | expressionS size_exp; | |
1975 | size_exp.X_op = O_constant; | |
1976 | size_exp.X_add_number = size; | |
1977 | ||
1978 | rep_exp.X_op = O_multiply; | |
1979 | rep_exp.X_add_symbol = rep_sym; | |
1980 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1981 | rep_exp.X_add_number = 0; | |
1982 | rep_sym = make_expr_symbol (&rep_exp); | |
1983 | } | |
1984 | ||
1985 | p = frag_var (rs_space, (int) size, (int) size, | |
1986 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1987 | } | |
f0e652b4 | 1988 | |
252b5132 | 1989 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 1990 | |
252b5132 | 1991 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
1992 | flavoured AS. The following bizarre behaviour is to be |
1993 | compatible with above. I guess they tried to take up to 8 | |
1994 | bytes from a 4-byte expression and they forgot to sign | |
1995 | extend. */ | |
252b5132 RH |
1996 | #define BSD_FILL_SIZE_CROCK_4 (4) |
1997 | md_number_to_chars (p, (valueT) fill, | |
1998 | (size > BSD_FILL_SIZE_CROCK_4 | |
1999 | ? BSD_FILL_SIZE_CROCK_4 | |
2000 | : (int) size)); | |
2001 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2002 | but emits no error message because it seems a legal thing to do. |
2003 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2004 | compiler. */ |
252b5132 RH |
2005 | } |
2006 | demand_empty_rest_of_line (); | |
2007 | } | |
2008 | ||
041ff4dd | 2009 | void |
39e6acbd | 2010 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2011 | { |
2012 | char *name; | |
2013 | int c; | |
2014 | symbolS *symbolP; | |
2015 | char *stop = NULL; | |
fb25138b | 2016 | char stopc = 0; |
252b5132 RH |
2017 | |
2018 | if (flag_mri) | |
2019 | stop = mri_comment_field (&stopc); | |
2020 | ||
2021 | do | |
2022 | { | |
2023 | name = input_line_pointer; | |
2024 | c = get_symbol_end (); | |
2025 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
2026 | S_SET_EXTERNAL (symbolP); |
2027 | ||
252b5132 RH |
2028 | *input_line_pointer = c; |
2029 | SKIP_WHITESPACE (); | |
58b5739a | 2030 | c = *input_line_pointer; |
252b5132 RH |
2031 | if (c == ',') |
2032 | { | |
2033 | input_line_pointer++; | |
2034 | SKIP_WHITESPACE (); | |
0e389e77 | 2035 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2036 | c = '\n'; |
2037 | } | |
2038 | } | |
2039 | while (c == ','); | |
2040 | ||
2041 | demand_empty_rest_of_line (); | |
2042 | ||
2043 | if (flag_mri) | |
2044 | mri_comment_end (stop, stopc); | |
2045 | } | |
2046 | ||
104d59d1 JM |
2047 | #ifdef OBJ_ELF |
2048 | #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0) | |
2049 | ||
2050 | static inline int | |
2051 | skip_past_char (char ** str, char c) | |
2052 | { | |
2053 | if (**str == c) | |
2054 | { | |
2055 | (*str)++; | |
2056 | return 0; | |
2057 | } | |
2058 | else | |
2059 | return -1; | |
2060 | } | |
2061 | #define skip_past_comma(str) skip_past_char (str, ',') | |
2062 | ||
ee3c0378 AS |
2063 | /* Parse an attribute directive for VENDOR. |
2064 | Returns the attribute number read, or zero on error. */ | |
2065 | int | |
104d59d1 JM |
2066 | s_vendor_attribute (int vendor) |
2067 | { | |
2068 | expressionS exp; | |
2069 | int type; | |
2070 | int tag; | |
2071 | unsigned int i = 0; | |
2072 | char *s = NULL; | |
104d59d1 | 2073 | |
e04befd0 AS |
2074 | /* Read the first number or name. */ |
2075 | skip_whitespace (input_line_pointer); | |
2076 | s = input_line_pointer; | |
2077 | if (ISDIGIT (*input_line_pointer)) | |
2078 | { | |
2079 | expression (& exp); | |
2080 | if (exp.X_op != O_constant) | |
2081 | goto bad; | |
2082 | tag = exp.X_add_number; | |
2083 | } | |
2084 | else | |
2085 | { | |
2086 | char *name; | |
2087 | ||
2088 | /* A name may contain '_', but no other punctuation. */ | |
2089 | for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_'; | |
2090 | ++input_line_pointer) | |
2091 | i++; | |
2092 | if (i == 0) | |
2093 | goto bad; | |
2094 | ||
2095 | name = alloca (i + 1); | |
2096 | memcpy (name, s, i); | |
2097 | name[i] = '\0'; | |
2098 | ||
2099 | #ifndef CONVERT_SYMBOLIC_ATTRIBUTE | |
2100 | #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1 | |
2101 | #endif | |
2102 | ||
2103 | tag = CONVERT_SYMBOLIC_ATTRIBUTE (name); | |
2104 | if (tag == -1) | |
2105 | { | |
2106 | as_bad (_("Attribute name not recognised: %s"), name); | |
2107 | ignore_rest_of_line (); | |
ee3c0378 | 2108 | return 0; |
e04befd0 AS |
2109 | } |
2110 | } | |
104d59d1 | 2111 | |
104d59d1 JM |
2112 | type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag); |
2113 | ||
2114 | if (skip_past_comma (&input_line_pointer) == -1) | |
2115 | goto bad; | |
2116 | if (type & 1) | |
2117 | { | |
2118 | expression (& exp); | |
2119 | if (exp.X_op != O_constant) | |
2120 | { | |
2121 | as_bad (_("expected numeric constant")); | |
2122 | ignore_rest_of_line (); | |
ee3c0378 | 2123 | return 0; |
104d59d1 JM |
2124 | } |
2125 | i = exp.X_add_number; | |
2126 | } | |
2d0bb761 | 2127 | if ((type & 3) == 3 |
104d59d1 JM |
2128 | && skip_past_comma (&input_line_pointer) == -1) |
2129 | { | |
2130 | as_bad (_("expected comma")); | |
2131 | ignore_rest_of_line (); | |
ee3c0378 | 2132 | return 0; |
104d59d1 JM |
2133 | } |
2134 | if (type & 2) | |
2135 | { | |
e04befd0 AS |
2136 | int len; |
2137 | ||
2138 | skip_whitespace (input_line_pointer); | |
104d59d1 JM |
2139 | if (*input_line_pointer != '"') |
2140 | goto bad_string; | |
e04befd0 | 2141 | s = demand_copy_C_string (&len); |
104d59d1 JM |
2142 | } |
2143 | ||
2d0bb761 | 2144 | switch (type & 3) |
104d59d1 JM |
2145 | { |
2146 | case 3: | |
7b86a9fa | 2147 | bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s); |
104d59d1 JM |
2148 | break; |
2149 | case 2: | |
2150 | bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s); | |
2151 | break; | |
2152 | case 1: | |
2153 | bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i); | |
2154 | break; | |
2155 | default: | |
2156 | abort (); | |
2157 | } | |
2158 | ||
104d59d1 | 2159 | demand_empty_rest_of_line (); |
ee3c0378 | 2160 | return tag; |
104d59d1 JM |
2161 | bad_string: |
2162 | as_bad (_("bad string constant")); | |
2163 | ignore_rest_of_line (); | |
ee3c0378 | 2164 | return 0; |
104d59d1 JM |
2165 | bad: |
2166 | as_bad (_("expected <tag> , <value>")); | |
2167 | ignore_rest_of_line (); | |
ee3c0378 | 2168 | return 0; |
104d59d1 JM |
2169 | } |
2170 | ||
2171 | /* Parse a .gnu_attribute directive. */ | |
2172 | ||
2173 | static void | |
2174 | s_gnu_attribute (int ignored ATTRIBUTE_UNUSED) | |
2175 | { | |
2176 | s_vendor_attribute (OBJ_ATTR_GNU); | |
2177 | } | |
2178 | #endif /* OBJ_ELF */ | |
2179 | ||
252b5132 RH |
2180 | /* Handle the MRI IRP and IRPC pseudo-ops. */ |
2181 | ||
2182 | void | |
39e6acbd | 2183 | s_irp (int irpc) |
252b5132 | 2184 | { |
40a4d956 | 2185 | char *file, *eol; |
252b5132 RH |
2186 | unsigned int line; |
2187 | sb s; | |
2188 | const char *err; | |
2189 | sb out; | |
2190 | ||
2191 | as_where (&file, &line); | |
2192 | ||
2193 | sb_new (&s); | |
40a4d956 JB |
2194 | eol = find_end_of_line (input_line_pointer, 0); |
2195 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2196 | input_line_pointer = eol; | |
252b5132 RH |
2197 | |
2198 | sb_new (&out); | |
2199 | ||
7592cfd7 | 2200 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2201 | if (err != NULL) |
2202 | as_bad_where (file, line, "%s", err); | |
2203 | ||
2204 | sb_kill (&s); | |
2205 | ||
9f10757c | 2206 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2207 | sb_kill (&out); |
2208 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2209 | } | |
2210 | ||
2211 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2212 | the section to only be linked once. However, this is not supported | |
2213 | by most object file formats. This takes an optional argument, | |
2214 | which is what to do about duplicates. */ | |
2215 | ||
2216 | void | |
39e6acbd | 2217 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2218 | { |
2219 | enum linkonce_type type; | |
2220 | ||
2221 | SKIP_WHITESPACE (); | |
2222 | ||
2223 | type = LINKONCE_DISCARD; | |
2224 | ||
041ff4dd | 2225 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2226 | { |
2227 | char *s; | |
2228 | char c; | |
2229 | ||
2230 | s = input_line_pointer; | |
2231 | c = get_symbol_end (); | |
2232 | if (strcasecmp (s, "discard") == 0) | |
2233 | type = LINKONCE_DISCARD; | |
2234 | else if (strcasecmp (s, "one_only") == 0) | |
2235 | type = LINKONCE_ONE_ONLY; | |
2236 | else if (strcasecmp (s, "same_size") == 0) | |
2237 | type = LINKONCE_SAME_SIZE; | |
2238 | else if (strcasecmp (s, "same_contents") == 0) | |
2239 | type = LINKONCE_SAME_CONTENTS; | |
2240 | else | |
2241 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2242 | ||
2243 | *input_line_pointer = c; | |
2244 | } | |
2245 | ||
2246 | #ifdef obj_handle_link_once | |
2247 | obj_handle_link_once (type); | |
2248 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2249 | { |
2250 | flagword flags; | |
2251 | ||
2252 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2253 | as_warn (_(".linkonce is not supported for this object file format")); | |
2254 | ||
2255 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2256 | flags |= SEC_LINK_ONCE; | |
2257 | switch (type) | |
2258 | { | |
2259 | default: | |
2260 | abort (); | |
2261 | case LINKONCE_DISCARD: | |
2262 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2263 | break; | |
2264 | case LINKONCE_ONE_ONLY: | |
2265 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2266 | break; | |
2267 | case LINKONCE_SAME_SIZE: | |
2268 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2269 | break; | |
2270 | case LINKONCE_SAME_CONTENTS: | |
2271 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2272 | break; | |
2273 | } | |
041ff4dd | 2274 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2275 | as_bad (_("bfd_set_section_flags: %s"), |
2276 | bfd_errmsg (bfd_get_error ())); | |
2277 | } | |
252b5132 RH |
2278 | #endif /* ! defined (obj_handle_link_once) */ |
2279 | ||
2280 | demand_empty_rest_of_line (); | |
2281 | } | |
2282 | ||
e13bab5a AM |
2283 | void |
2284 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2285 | { |
e13bab5a | 2286 | char *pfrag; |
252b5132 RH |
2287 | segT current_seg = now_seg; |
2288 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2289 | segT bss_seg = bss_section; |
2290 | ||
252b5132 RH |
2291 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2292 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2293 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2294 | { | |
2295 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2296 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2297 | { |
2298 | bss_seg = subseg_new (".sbss", 1); | |
2299 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2300 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2301 | as_warn (_("error setting flags for \".sbss\": %s"), |
2302 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2303 | } |
2304 | } | |
2305 | #endif | |
e13bab5a | 2306 | subseg_set (bss_seg, 1); |
8684e216 | 2307 | |
e13bab5a | 2308 | if (align) |
041ff4dd | 2309 | { |
e13bab5a AM |
2310 | record_alignment (bss_seg, align); |
2311 | frag_align (align, 0, 0); | |
041ff4dd | 2312 | } |
252b5132 | 2313 | |
e13bab5a AM |
2314 | /* Detach from old frag. */ |
2315 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2316 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2317 | |
e13bab5a AM |
2318 | symbol_set_frag (symbolP, frag_now); |
2319 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2320 | *pfrag = 0; | |
f0e652b4 | 2321 | |
e13bab5a AM |
2322 | #ifdef S_SET_SIZE |
2323 | S_SET_SIZE (symbolP, size); | |
2324 | #endif | |
2325 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2326 | |
e13bab5a AM |
2327 | #ifdef OBJ_COFF |
2328 | /* The symbol may already have been created with a preceding | |
2329 | ".globl" directive -- be careful not to step on storage class | |
2330 | in that case. Otherwise, set it to static. */ | |
2331 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2332 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2333 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2334 | |
e13bab5a AM |
2335 | subseg_set (current_seg, current_subseg); |
2336 | } | |
f0e652b4 | 2337 | |
e13bab5a AM |
2338 | offsetT |
2339 | parse_align (int align_bytes) | |
2340 | { | |
2341 | expressionS exp; | |
2342 | addressT align; | |
252b5132 | 2343 | |
e13bab5a AM |
2344 | SKIP_WHITESPACE (); |
2345 | if (*input_line_pointer != ',') | |
2346 | { | |
2347 | no_align: | |
2348 | as_bad (_("expected alignment after size")); | |
2349 | ignore_rest_of_line (); | |
2350 | return -1; | |
2351 | } | |
f0e652b4 | 2352 | |
e13bab5a AM |
2353 | input_line_pointer++; |
2354 | SKIP_WHITESPACE (); | |
f0e652b4 | 2355 | |
e13bab5a AM |
2356 | align = get_absolute_expr (&exp); |
2357 | if (exp.X_op == O_absent) | |
2358 | goto no_align; | |
2359 | ||
2360 | if (!exp.X_unsigned) | |
2361 | { | |
2362 | as_warn (_("alignment negative; 0 assumed")); | |
2363 | align = 0; | |
041ff4dd | 2364 | } |
e13bab5a AM |
2365 | |
2366 | if (align_bytes && align != 0) | |
252b5132 | 2367 | { |
e13bab5a AM |
2368 | /* convert to a power of 2 alignment */ |
2369 | unsigned int alignp2 = 0; | |
2370 | while ((align & 1) == 0) | |
2371 | align >>= 1, ++alignp2; | |
2372 | if (align != 1) | |
252b5132 | 2373 | { |
e13bab5a AM |
2374 | as_bad (_("alignment not a power of 2")); |
2375 | ignore_rest_of_line (); | |
2376 | return -1; | |
252b5132 | 2377 | } |
e13bab5a | 2378 | align = alignp2; |
252b5132 | 2379 | } |
e13bab5a AM |
2380 | return align; |
2381 | } | |
252b5132 | 2382 | |
e13bab5a AM |
2383 | /* Called from s_comm_internal after symbol name and size have been |
2384 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2385 | 1 if this was a ".bss" directive which has a 3rd argument | |
2386 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2387 | with alignment in bytes. */ | |
252b5132 | 2388 | |
13c56984 | 2389 | symbolS * |
e13bab5a AM |
2390 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2391 | { | |
2392 | addressT align = 0; | |
252b5132 | 2393 | |
e13bab5a AM |
2394 | if (needs_align) |
2395 | { | |
2396 | align = parse_align (needs_align - 1); | |
2397 | if (align == (addressT) -1) | |
2398 | return NULL; | |
252b5132 RH |
2399 | } |
2400 | else | |
e13bab5a AM |
2401 | /* Assume some objects may require alignment on some systems. */ |
2402 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2403 | |
e13bab5a AM |
2404 | bss_alloc (symbolP, size, align); |
2405 | return symbolP; | |
041ff4dd | 2406 | } |
252b5132 RH |
2407 | |
2408 | void | |
39e6acbd | 2409 | s_lcomm (int needs_align) |
252b5132 | 2410 | { |
e13bab5a | 2411 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2412 | } |
2413 | ||
041ff4dd | 2414 | void |
39e6acbd | 2415 | s_lcomm_bytes (int needs_align) |
252b5132 | 2416 | { |
e13bab5a | 2417 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2418 | } |
2419 | ||
041ff4dd | 2420 | void |
39e6acbd | 2421 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2422 | { |
2423 | register char *name; | |
2424 | register char c; | |
2425 | register char *p; | |
2426 | expressionS exp; | |
2427 | register symbolS *symbolP; | |
2428 | ||
041ff4dd | 2429 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2430 | name = input_line_pointer; |
2431 | c = get_symbol_end (); | |
2432 | p = input_line_pointer; | |
2433 | *p = c; | |
0e389e77 AM |
2434 | |
2435 | if (name == p) | |
2436 | { | |
2437 | as_bad (_("expected symbol name")); | |
40a4d956 | 2438 | ignore_rest_of_line (); |
0e389e77 AM |
2439 | return; |
2440 | } | |
2441 | ||
252b5132 | 2442 | SKIP_WHITESPACE (); |
f0e652b4 | 2443 | |
252b5132 RH |
2444 | if (*input_line_pointer != ',') |
2445 | { | |
2446 | *p = 0; | |
0e389e77 | 2447 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2448 | *p = c; |
2449 | ignore_rest_of_line (); | |
2450 | return; | |
2451 | } | |
f0e652b4 | 2452 | |
252b5132 | 2453 | input_line_pointer++; |
9497f5ac | 2454 | expression_and_evaluate (&exp); |
f0e652b4 | 2455 | |
252b5132 RH |
2456 | if (exp.X_op != O_constant |
2457 | && exp.X_op != O_register) | |
2458 | { | |
2459 | as_bad (_("bad expression")); | |
2460 | ignore_rest_of_line (); | |
2461 | return; | |
2462 | } | |
f0e652b4 | 2463 | |
252b5132 RH |
2464 | *p = 0; |
2465 | symbolP = symbol_find_or_make (name); | |
2466 | ||
86ebace2 | 2467 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2468 | { |
2469 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2470 | keep the "external" bit. */ |
252b5132 RH |
2471 | S_SET_SEGMENT (symbolP, |
2472 | (exp.X_op == O_constant | |
2473 | ? absolute_section | |
2474 | : reg_section)); | |
2475 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2476 | } | |
2477 | else | |
2478 | { | |
0e389e77 | 2479 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2480 | } |
f0e652b4 | 2481 | |
252b5132 RH |
2482 | *p = c; |
2483 | demand_empty_rest_of_line (); | |
041ff4dd | 2484 | } |
252b5132 | 2485 | |
0822d075 NC |
2486 | /* Read a line into an sb. Returns the character that ended the line |
2487 | or zero if there are no more lines. */ | |
252b5132 RH |
2488 | |
2489 | static int | |
7592cfd7 | 2490 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2491 | { |
40a4d956 | 2492 | char *eol; |
252b5132 RH |
2493 | |
2494 | if (input_line_pointer[-1] == '\n') | |
2495 | bump_line_counters (); | |
2496 | ||
2497 | if (input_line_pointer >= buffer_limit) | |
2498 | { | |
2499 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2500 | if (buffer_limit == 0) | |
2501 | return 0; | |
2502 | } | |
2503 | ||
7592cfd7 | 2504 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2505 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2506 | input_line_pointer = eol; | |
f0e652b4 | 2507 | |
0822d075 NC |
2508 | /* Don't skip multiple end-of-line characters, because that breaks support |
2509 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2510 | characters but isn't. Instead just skip one end of line character and | |
2511 | return the character skipped so that the caller can re-insert it if | |
2512 | necessary. */ | |
40a4d956 | 2513 | return *input_line_pointer++; |
252b5132 RH |
2514 | } |
2515 | ||
7592cfd7 NC |
2516 | static int |
2517 | get_non_macro_line_sb (sb *line) | |
2518 | { | |
2519 | return get_line_sb (line, 0); | |
2520 | } | |
2521 | ||
2522 | static int | |
2523 | get_macro_line_sb (sb *line) | |
2524 | { | |
2525 | return get_line_sb (line, 1); | |
2526 | } | |
2527 | ||
fea17916 | 2528 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2529 | |
2530 | void | |
39e6acbd | 2531 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2532 | { |
40a4d956 | 2533 | char *file, *eol; |
252b5132 RH |
2534 | unsigned int line; |
2535 | sb s; | |
252b5132 RH |
2536 | const char *err; |
2537 | const char *name; | |
2538 | ||
2539 | as_where (&file, &line); | |
2540 | ||
2541 | sb_new (&s); | |
40a4d956 JB |
2542 | eol = find_end_of_line (input_line_pointer, 0); |
2543 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2544 | input_line_pointer = eol; | |
252b5132 | 2545 | |
252b5132 | 2546 | if (line_label != NULL) |
360e86f1 JB |
2547 | { |
2548 | sb label; | |
252b5132 | 2549 | |
360e86f1 JB |
2550 | sb_new (&label); |
2551 | sb_add_string (&label, S_GET_NAME (line_label)); | |
7592cfd7 | 2552 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2553 | sb_kill (&label); |
2554 | } | |
2555 | else | |
7592cfd7 | 2556 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2557 | if (err != NULL) |
02ddf156 | 2558 | as_bad_where (file, line, err, name); |
252b5132 RH |
2559 | else |
2560 | { | |
2561 | if (line_label != NULL) | |
2562 | { | |
5e75c3ab | 2563 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2564 | S_SET_VALUE (line_label, 0); |
2b47531b | 2565 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2566 | } |
2567 | ||
abd63a32 | 2568 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2569 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2570 | || (!flag_m68k_mri |
252b5132 RH |
2571 | && *name == '.' |
2572 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2573 | as_warn_where (file, |
2574 | line, | |
2575 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2576 | name); |
2577 | } | |
2578 | ||
2579 | sb_kill (&s); | |
2580 | } | |
2581 | ||
2582 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2583 | expansion. */ | |
2584 | ||
2585 | void | |
39e6acbd | 2586 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2587 | { |
5808f4a6 NC |
2588 | if (macro_nest) |
2589 | { | |
2590 | cond_exit_macro (macro_nest); | |
2591 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2592 | } | |
2593 | else | |
2594 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2595 | } |
2596 | ||
2597 | /* Switch in and out of MRI mode. */ | |
2598 | ||
2599 | void | |
39e6acbd | 2600 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2601 | { |
2602 | int on, old_flag; | |
2603 | ||
2604 | on = get_absolute_expression (); | |
2605 | old_flag = flag_mri; | |
2606 | if (on != 0) | |
2607 | { | |
2608 | flag_mri = 1; | |
2609 | #ifdef TC_M68K | |
2610 | flag_m68k_mri = 1; | |
2611 | #endif | |
2612 | macro_mri_mode (1); | |
2613 | } | |
2614 | else | |
2615 | { | |
2616 | flag_mri = 0; | |
abd63a32 | 2617 | #ifdef TC_M68K |
252b5132 | 2618 | flag_m68k_mri = 0; |
abd63a32 | 2619 | #endif |
252b5132 RH |
2620 | macro_mri_mode (0); |
2621 | } | |
2622 | ||
2623 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2624 | update the operator rankings. */ | |
2625 | expr_set_precedence (); | |
2626 | ||
2627 | #ifdef MRI_MODE_CHANGE | |
2628 | if (on != old_flag) | |
2629 | MRI_MODE_CHANGE (on); | |
2630 | #endif | |
2631 | ||
2632 | demand_empty_rest_of_line (); | |
2633 | } | |
2634 | ||
2635 | /* Handle changing the location counter. */ | |
2636 | ||
2637 | static void | |
39e6acbd | 2638 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 RH |
2639 | { |
2640 | if (segment != now_seg && segment != absolute_section) | |
0e389e77 | 2641 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2642 | |
2643 | if (now_seg == absolute_section) | |
2644 | { | |
2645 | if (fill != 0) | |
2646 | as_warn (_("ignoring fill value in absolute section")); | |
2647 | if (exp->X_op != O_constant) | |
2648 | { | |
2649 | as_bad (_("only constant offsets supported in absolute section")); | |
2650 | exp->X_add_number = 0; | |
2651 | } | |
2652 | abs_section_offset = exp->X_add_number; | |
2653 | } | |
2654 | else | |
2655 | { | |
2656 | char *p; | |
2289f85d AM |
2657 | symbolS *sym = exp->X_add_symbol; |
2658 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2659 | |
2289f85d AM |
2660 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2661 | { | |
2662 | /* Handle complex expressions. */ | |
2663 | sym = make_expr_symbol (exp); | |
2664 | off = 0; | |
2665 | } | |
2666 | ||
2667 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2668 | *p = fill; |
2669 | } | |
2670 | } | |
2671 | ||
041ff4dd | 2672 | void |
39e6acbd | 2673 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2674 | { |
2675 | register segT segment; | |
2676 | expressionS exp; | |
2677 | register long temp_fill; | |
2678 | ||
2679 | #ifdef md_flush_pending_output | |
2680 | md_flush_pending_output (); | |
2681 | #endif | |
2682 | ||
2683 | /* The m68k MRI assembler has a different meaning for .org. It | |
2684 | means to create an absolute section at a given address. We can't | |
2685 | support that--use a linker script instead. */ | |
2686 | if (flag_m68k_mri) | |
2687 | { | |
2688 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2689 | ignore_rest_of_line (); | |
2690 | return; | |
2691 | } | |
2692 | ||
2693 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2694 | thing as a sub-segment-relative origin. Any absolute origin is | |
2695 | given a warning, then assumed to be segment-relative. Any | |
2696 | segmented origin expression ("foo+42") had better be in the right | |
2697 | segment or the .org is ignored. | |
2698 | ||
2699 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2700 | we never know sub-segment sizes when we are reading code. BSD | |
2701 | will crash trying to emit negative numbers of filler bytes in | |
2702 | certain .orgs. We don't crash, but see as-write for that code. | |
2703 | ||
2704 | Don't make frag if need_pass_2==1. */ | |
2705 | segment = get_known_segmented_expression (&exp); | |
2706 | if (*input_line_pointer == ',') | |
2707 | { | |
2708 | input_line_pointer++; | |
2709 | temp_fill = get_absolute_expression (); | |
2710 | } | |
2711 | else | |
2712 | temp_fill = 0; | |
2713 | ||
2714 | if (!need_pass_2) | |
2715 | do_org (segment, &exp, temp_fill); | |
2716 | ||
2717 | demand_empty_rest_of_line (); | |
041ff4dd | 2718 | } |
252b5132 RH |
2719 | |
2720 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2721 | called by the obj-format routine which handles section changing | |
2722 | when in MRI mode. It will create a new section, and return it. It | |
2723 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2724 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2725 | |
2726 | void | |
39e6acbd | 2727 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2728 | { |
2729 | #ifdef TC_M68K | |
2730 | ||
2731 | char *name; | |
2732 | char c; | |
2733 | segT seg; | |
2734 | ||
2735 | SKIP_WHITESPACE (); | |
041ff4dd | 2736 | |
252b5132 | 2737 | name = input_line_pointer; |
3882b010 | 2738 | if (!ISDIGIT (*name)) |
252b5132 RH |
2739 | c = get_symbol_end (); |
2740 | else | |
2741 | { | |
2742 | do | |
2743 | { | |
2744 | ++input_line_pointer; | |
2745 | } | |
3882b010 | 2746 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2747 | |
252b5132 RH |
2748 | c = *input_line_pointer; |
2749 | *input_line_pointer = '\0'; | |
2750 | } | |
2751 | ||
2752 | name = xstrdup (name); | |
2753 | ||
2754 | *input_line_pointer = c; | |
2755 | ||
2756 | seg = subseg_new (name, 0); | |
2757 | ||
2758 | if (*input_line_pointer == ',') | |
2759 | { | |
2760 | int align; | |
2761 | ||
2762 | ++input_line_pointer; | |
2763 | align = get_absolute_expression (); | |
2764 | record_alignment (seg, align); | |
2765 | } | |
2766 | ||
2767 | *type = 'C'; | |
2768 | if (*input_line_pointer == ',') | |
2769 | { | |
2770 | c = *++input_line_pointer; | |
3882b010 | 2771 | c = TOUPPER (c); |
252b5132 RH |
2772 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2773 | *type = c; | |
2774 | else | |
2775 | as_bad (_("unrecognized section type")); | |
2776 | ++input_line_pointer; | |
2777 | ||
252b5132 RH |
2778 | { |
2779 | flagword flags; | |
2780 | ||
2781 | flags = SEC_NO_FLAGS; | |
2782 | if (*type == 'C') | |
2783 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2784 | else if (*type == 'D' || *type == 'M') | |
2785 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2786 | else if (*type == 'R') | |
2787 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2788 | if (flags != SEC_NO_FLAGS) | |
2789 | { | |
041ff4dd | 2790 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2791 | as_warn (_("error setting flags for \"%s\": %s"), |
2792 | bfd_section_name (stdoutput, seg), | |
2793 | bfd_errmsg (bfd_get_error ())); | |
2794 | } | |
2795 | } | |
252b5132 RH |
2796 | } |
2797 | ||
2798 | /* Ignore the HP type. */ | |
2799 | if (*input_line_pointer == ',') | |
2800 | input_line_pointer += 2; | |
2801 | ||
2802 | demand_empty_rest_of_line (); | |
2803 | ||
2804 | #else /* ! TC_M68K */ | |
2805 | #ifdef TC_I960 | |
2806 | ||
2807 | char *name; | |
2808 | char c; | |
2809 | segT seg; | |
2810 | ||
2811 | SKIP_WHITESPACE (); | |
2812 | ||
2813 | name = input_line_pointer; | |
2814 | c = get_symbol_end (); | |
2815 | ||
2816 | name = xstrdup (name); | |
2817 | ||
2818 | *input_line_pointer = c; | |
2819 | ||
2820 | seg = subseg_new (name, 0); | |
2821 | ||
2822 | if (*input_line_pointer != ',') | |
2823 | *type = 'C'; | |
2824 | else | |
2825 | { | |
2826 | char *sectype; | |
2827 | ||
2828 | ++input_line_pointer; | |
2829 | SKIP_WHITESPACE (); | |
2830 | sectype = input_line_pointer; | |
2831 | c = get_symbol_end (); | |
2832 | if (*sectype == '\0') | |
2833 | *type = 'C'; | |
2834 | else if (strcasecmp (sectype, "text") == 0) | |
2835 | *type = 'C'; | |
2836 | else if (strcasecmp (sectype, "data") == 0) | |
2837 | *type = 'D'; | |
2838 | else if (strcasecmp (sectype, "romdata") == 0) | |
2839 | *type = 'R'; | |
2840 | else | |
2841 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2842 | *input_line_pointer = c; | |
2843 | } | |
2844 | ||
2845 | if (*input_line_pointer == ',') | |
2846 | { | |
2847 | char *seccmd; | |
2848 | ||
2849 | ++input_line_pointer; | |
2850 | SKIP_WHITESPACE (); | |
2851 | seccmd = input_line_pointer; | |
2852 | c = get_symbol_end (); | |
2853 | if (strcasecmp (seccmd, "absolute") == 0) | |
2854 | { | |
2855 | as_bad (_("absolute sections are not supported")); | |
2856 | *input_line_pointer = c; | |
2857 | ignore_rest_of_line (); | |
2858 | return; | |
2859 | } | |
2860 | else if (strcasecmp (seccmd, "align") == 0) | |
2861 | { | |
2862 | int align; | |
2863 | ||
2864 | *input_line_pointer = c; | |
2865 | align = get_absolute_expression (); | |
2866 | record_alignment (seg, align); | |
2867 | } | |
2868 | else | |
2869 | { | |
2870 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2871 | *input_line_pointer = c; | |
2872 | } | |
2873 | } | |
2874 | ||
041ff4dd | 2875 | demand_empty_rest_of_line (); |
252b5132 RH |
2876 | |
2877 | #else /* ! TC_I960 */ | |
2878 | /* The MRI assembler seems to use different forms of .sect for | |
2879 | different targets. */ | |
2880 | as_bad ("MRI mode not supported for this target"); | |
2881 | ignore_rest_of_line (); | |
2882 | #endif /* ! TC_I960 */ | |
2883 | #endif /* ! TC_M68K */ | |
2884 | } | |
2885 | ||
2886 | /* Handle the .print pseudo-op. */ | |
2887 | ||
2888 | void | |
39e6acbd | 2889 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2890 | { |
2891 | char *s; | |
2892 | int len; | |
2893 | ||
2894 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
2895 | if (s != NULL) |
2896 | printf ("%s\n", s); | |
252b5132 RH |
2897 | demand_empty_rest_of_line (); |
2898 | } | |
2899 | ||
2900 | /* Handle the .purgem pseudo-op. */ | |
2901 | ||
2902 | void | |
39e6acbd | 2903 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2904 | { |
2905 | if (is_it_end_of_statement ()) | |
2906 | { | |
2907 | demand_empty_rest_of_line (); | |
2908 | return; | |
2909 | } | |
2910 | ||
2911 | do | |
2912 | { | |
2913 | char *name; | |
2914 | char c; | |
2915 | ||
2916 | SKIP_WHITESPACE (); | |
2917 | name = input_line_pointer; | |
2918 | c = get_symbol_end (); | |
2919 | delete_macro (name); | |
2920 | *input_line_pointer = c; | |
2921 | SKIP_WHITESPACE (); | |
2922 | } | |
2923 | while (*input_line_pointer++ == ','); | |
2924 | ||
2925 | --input_line_pointer; | |
2926 | demand_empty_rest_of_line (); | |
2927 | } | |
2928 | ||
057f53c1 | 2929 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 2930 | |
057f53c1 JB |
2931 | static void |
2932 | s_bad_end (int endr) | |
7f28ab9d | 2933 | { |
057f53c1 JB |
2934 | as_warn (_(".end%c encountered without preceeding %s"), |
2935 | endr ? 'r' : 'm', | |
2936 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
2937 | demand_empty_rest_of_line (); |
2938 | } | |
2939 | ||
2940 | /* Handle the .rept pseudo-op. */ | |
2941 | ||
252b5132 | 2942 | void |
39e6acbd | 2943 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2944 | { |
2945 | int count; | |
252b5132 RH |
2946 | |
2947 | count = get_absolute_expression (); | |
2948 | ||
041ff4dd | 2949 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2950 | } |
2951 | ||
2952 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2953 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2954 | |
2955 | void | |
39e6acbd | 2956 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
2957 | { |
2958 | sb one; | |
2959 | sb many; | |
2960 | ||
252b5132 | 2961 | sb_new (&one); |
7592cfd7 | 2962 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 2963 | { |
6dc19fc4 | 2964 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2965 | return; |
2966 | } | |
2967 | ||
2968 | sb_new (&many); | |
2969 | while (count-- > 0) | |
2970 | sb_add_sb (&many, &one); | |
2971 | ||
2972 | sb_kill (&one); | |
2973 | ||
9f10757c | 2974 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2975 | sb_kill (&many); |
2976 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2977 | } | |
2978 | ||
6dc19fc4 TW |
2979 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
2980 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 2981 | are properly nested. |
6dc19fc4 TW |
2982 | |
2983 | This function makes it easier to implement a premature "break" out of the | |
2984 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 2985 | such as line substitutions. */ |
6dc19fc4 TW |
2986 | |
2987 | void | |
39e6acbd | 2988 | end_repeat (int extra) |
6dc19fc4 TW |
2989 | { |
2990 | cond_exit_macro (macro_nest); | |
2991 | while (extra-- >= 0) | |
2992 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2993 | } | |
2994 | ||
be95a9c1 | 2995 | static void |
9497f5ac | 2996 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
2997 | { |
2998 | symbolS *symbolP; | |
2999 | ||
3000 | if (name[0] == '.' && name[1] == '\0') | |
3001 | { | |
3002 | /* Turn '. = mumble' into a .org mumble. */ | |
3003 | segT segment; | |
3004 | expressionS exp; | |
3005 | ||
3006 | segment = get_known_segmented_expression (&exp); | |
3007 | ||
3008 | if (!need_pass_2) | |
3009 | do_org (segment, &exp, 0); | |
3010 | ||
3011 | return; | |
3012 | } | |
3013 | ||
3014 | if ((symbolP = symbol_find (name)) == NULL | |
3015 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3016 | { | |
3017 | symbolP = symbol_find_or_make (name); | |
3018 | #ifndef NO_LISTING | |
3019 | /* When doing symbol listings, play games with dummy fragments living | |
3020 | outside the normal fragment chain to record the file and line info | |
3021 | for this symbol. */ | |
3022 | if (listing & LISTING_SYMBOLS) | |
3023 | { | |
3024 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 3025 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
3026 | dummy_frag->line = listing_tail; |
3027 | dummy_frag->fr_symbol = symbolP; | |
3028 | symbol_set_frag (symbolP, dummy_frag); | |
3029 | } | |
3030 | #endif | |
31d20a21 AM |
3031 | #ifdef OBJ_COFF |
3032 | /* "set" symbols are local unless otherwise specified. */ | |
3033 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3034 | #endif |
3035 | } | |
3036 | ||
6a2b6326 | 3037 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac NC |
3038 | { |
3039 | /* Permit register names to be redefined. */ | |
3040 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) | |
3041 | && S_GET_SEGMENT (symbolP) != reg_section) | |
3042 | { | |
3043 | as_bad (_("symbol `%s' is already defined"), name); | |
3044 | symbolP = symbol_clone (symbolP, 0); | |
3045 | } | |
3046 | /* If the symbol is volatile, copy the symbol and replace the | |
3047 | original with the copy, so that previous uses of the symbol will | |
3048 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3049 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3050 | symbolP = symbol_clone (symbolP, 1); |
3051 | } | |
3052 | ||
3053 | if (mode == 0) | |
3054 | S_SET_VOLATILE (symbolP); | |
3055 | else if (mode < 0) | |
3056 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3057 | |
3058 | pseudo_set (symbolP); | |
be95a9c1 AM |
3059 | } |
3060 | ||
9497f5ac NC |
3061 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3062 | then this is .equiv, and it is an error if the symbol is already | |
3063 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3064 | reference. */ | |
252b5132 | 3065 | |
041ff4dd | 3066 | void |
39e6acbd | 3067 | s_set (int equiv) |
252b5132 | 3068 | { |
be95a9c1 AM |
3069 | char *name; |
3070 | char delim; | |
3071 | char *end_name; | |
252b5132 | 3072 | |
041ff4dd NC |
3073 | /* Especial apologies for the random logic: |
3074 | this just grew, and could be parsed much more simply! | |
3075 | Dean in haste. */ | |
252b5132 RH |
3076 | name = input_line_pointer; |
3077 | delim = get_symbol_end (); | |
3078 | end_name = input_line_pointer; | |
0e389e77 | 3079 | *end_name = delim; |
409d19c4 | 3080 | |
0e389e77 | 3081 | if (name == end_name) |
409d19c4 AM |
3082 | { |
3083 | as_bad (_("expected symbol name")); | |
40a4d956 | 3084 | ignore_rest_of_line (); |
409d19c4 AM |
3085 | return; |
3086 | } | |
3087 | ||
252b5132 RH |
3088 | SKIP_WHITESPACE (); |
3089 | ||
3090 | if (*input_line_pointer != ',') | |
3091 | { | |
3092 | *end_name = 0; | |
0e389e77 | 3093 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
3094 | *end_name = delim; |
3095 | ignore_rest_of_line (); | |
3096 | return; | |
3097 | } | |
3098 | ||
3099 | input_line_pointer++; | |
3100 | *end_name = 0; | |
3101 | ||
be95a9c1 | 3102 | assign_symbol (name, equiv); |
252b5132 | 3103 | *end_name = delim; |
31d20a21 AM |
3104 | |
3105 | demand_empty_rest_of_line (); | |
041ff4dd | 3106 | } |
252b5132 | 3107 | |
041ff4dd | 3108 | void |
39e6acbd | 3109 | s_space (int mult) |
252b5132 RH |
3110 | { |
3111 | expressionS exp; | |
3112 | expressionS val; | |
3113 | char *p = 0; | |
3114 | char *stop = NULL; | |
fb25138b | 3115 | char stopc = 0; |
252b5132 RH |
3116 | int bytes; |
3117 | ||
3118 | #ifdef md_flush_pending_output | |
3119 | md_flush_pending_output (); | |
3120 | #endif | |
3121 | ||
3122 | if (flag_mri) | |
3123 | stop = mri_comment_field (&stopc); | |
3124 | ||
3125 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3126 | this is ds.b. */ | |
3127 | if (flag_m68k_mri && mult > 1) | |
3128 | { | |
3129 | if (now_seg == absolute_section) | |
3130 | { | |
3131 | abs_section_offset += abs_section_offset & 1; | |
3132 | if (line_label != NULL) | |
3133 | S_SET_VALUE (line_label, abs_section_offset); | |
3134 | } | |
3135 | else if (mri_common_symbol != NULL) | |
3136 | { | |
3137 | valueT val; | |
3138 | ||
3139 | val = S_GET_VALUE (mri_common_symbol); | |
3140 | if ((val & 1) != 0) | |
3141 | { | |
3142 | S_SET_VALUE (mri_common_symbol, val + 1); | |
3143 | if (line_label != NULL) | |
3144 | { | |
2b47531b ILT |
3145 | expressionS *symexp; |
3146 | ||
3147 | symexp = symbol_get_value_expression (line_label); | |
3148 | know (symexp->X_op == O_symbol); | |
3149 | know (symexp->X_add_symbol == mri_common_symbol); | |
3150 | symexp->X_add_number += 1; | |
252b5132 RH |
3151 | } |
3152 | } | |
3153 | } | |
3154 | else | |
3155 | { | |
3156 | do_align (1, (char *) NULL, 0, 0); | |
3157 | if (line_label != NULL) | |
3158 | { | |
2b47531b | 3159 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3160 | S_SET_VALUE (line_label, frag_now_fix ()); |
3161 | } | |
3162 | } | |
3163 | } | |
3164 | ||
3165 | bytes = mult; | |
3166 | ||
3167 | expression (&exp); | |
3168 | ||
3169 | SKIP_WHITESPACE (); | |
3170 | if (*input_line_pointer == ',') | |
3171 | { | |
3172 | ++input_line_pointer; | |
3173 | expression (&val); | |
3174 | } | |
3175 | else | |
3176 | { | |
3177 | val.X_op = O_constant; | |
3178 | val.X_add_number = 0; | |
3179 | } | |
3180 | ||
3181 | if (val.X_op != O_constant | |
3182 | || val.X_add_number < - 0x80 | |
3183 | || val.X_add_number > 0xff | |
3184 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3185 | { | |
9497f5ac | 3186 | resolve_expression (&exp); |
252b5132 | 3187 | if (exp.X_op != O_constant) |
0e389e77 | 3188 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3189 | else |
3190 | { | |
3191 | offsetT i; | |
3192 | ||
3193 | if (mult == 0) | |
3194 | mult = 1; | |
3195 | bytes = mult * exp.X_add_number; | |
3196 | for (i = 0; i < exp.X_add_number; i++) | |
3197 | emit_expr (&val, mult); | |
3198 | } | |
3199 | } | |
3200 | else | |
3201 | { | |
9497f5ac NC |
3202 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3203 | resolve_expression (&exp); | |
3204 | ||
252b5132 RH |
3205 | if (exp.X_op == O_constant) |
3206 | { | |
a4a151e6 | 3207 | offsetT repeat; |
252b5132 RH |
3208 | |
3209 | repeat = exp.X_add_number; | |
3210 | if (mult) | |
3211 | repeat *= mult; | |
3212 | bytes = repeat; | |
3213 | if (repeat <= 0) | |
3214 | { | |
2d150871 RO |
3215 | if (!flag_mri) |
3216 | as_warn (_(".space repeat count is zero, ignored")); | |
3217 | else if (repeat < 0) | |
252b5132 RH |
3218 | as_warn (_(".space repeat count is negative, ignored")); |
3219 | goto getout; | |
3220 | } | |
3221 | ||
3222 | /* If we are in the absolute section, just bump the offset. */ | |
3223 | if (now_seg == absolute_section) | |
3224 | { | |
3225 | abs_section_offset += repeat; | |
3226 | goto getout; | |
3227 | } | |
3228 | ||
3229 | /* If we are secretly in an MRI common section, then | |
3230 | creating space just increases the size of the common | |
3231 | symbol. */ | |
3232 | if (mri_common_symbol != NULL) | |
3233 | { | |
3234 | S_SET_VALUE (mri_common_symbol, | |
3235 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3236 | goto getout; | |
3237 | } | |
3238 | ||
3239 | if (!need_pass_2) | |
3240 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3241 | (offsetT) repeat, (char *) 0); | |
3242 | } | |
3243 | else | |
3244 | { | |
3245 | if (now_seg == absolute_section) | |
3246 | { | |
3247 | as_bad (_("space allocation too complex in absolute section")); | |
3248 | subseg_set (text_section, 0); | |
3249 | } | |
f0e652b4 | 3250 | |
252b5132 RH |
3251 | if (mri_common_symbol != NULL) |
3252 | { | |
3253 | as_bad (_("space allocation too complex in common section")); | |
3254 | mri_common_symbol = NULL; | |
3255 | } | |
f0e652b4 | 3256 | |
252b5132 RH |
3257 | if (!need_pass_2) |
3258 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3259 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3260 | } | |
3261 | ||
3262 | if (p) | |
3263 | *p = val.X_add_number; | |
3264 | } | |
3265 | ||
3266 | getout: | |
3267 | ||
3268 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3269 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3270 | or dcb.b. */ | |
3271 | if (flag_mri && (bytes & 1) != 0) | |
3272 | mri_pending_align = 1; | |
3273 | ||
3274 | demand_empty_rest_of_line (); | |
3275 | ||
3276 | if (flag_mri) | |
3277 | mri_comment_end (stop, stopc); | |
3278 | } | |
3279 | ||
3280 | /* This is like s_space, but the value is a floating point number with | |
3281 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3282 | friends. */ | |
3283 | ||
3284 | void | |
39e6acbd | 3285 | s_float_space (int float_type) |
252b5132 RH |
3286 | { |
3287 | offsetT count; | |
3288 | int flen; | |
3289 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3290 | char *stop = NULL; | |
fb25138b | 3291 | char stopc = 0; |
252b5132 RH |
3292 | |
3293 | if (flag_mri) | |
3294 | stop = mri_comment_field (&stopc); | |
3295 | ||
3296 | count = get_absolute_expression (); | |
3297 | ||
3298 | SKIP_WHITESPACE (); | |
3299 | if (*input_line_pointer != ',') | |
3300 | { | |
3301 | as_bad (_("missing value")); | |
3302 | ignore_rest_of_line (); | |
3303 | if (flag_mri) | |
3304 | mri_comment_end (stop, stopc); | |
3305 | return; | |
3306 | } | |
3307 | ||
3308 | ++input_line_pointer; | |
3309 | ||
3310 | SKIP_WHITESPACE (); | |
3311 | ||
3312 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3313 | * letter is legal. */ | |
3314 | if (input_line_pointer[0] == '0' | |
3882b010 | 3315 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3316 | input_line_pointer += 2; |
3317 | ||
3318 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3319 | with the exact digits specified. */ | |
3320 | if (input_line_pointer[0] == ':') | |
3321 | { | |
3322 | flen = hex_float (float_type, temp); | |
3323 | if (flen < 0) | |
3324 | { | |
3325 | ignore_rest_of_line (); | |
3326 | if (flag_mri) | |
3327 | mri_comment_end (stop, stopc); | |
3328 | return; | |
3329 | } | |
3330 | } | |
3331 | else | |
3332 | { | |
3333 | char *err; | |
3334 | ||
3335 | err = md_atof (float_type, temp, &flen); | |
3336 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3337 | know (err != NULL || flen > 0); |
252b5132 RH |
3338 | if (err) |
3339 | { | |
0e389e77 | 3340 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3341 | ignore_rest_of_line (); |
3342 | if (flag_mri) | |
3343 | mri_comment_end (stop, stopc); | |
3344 | return; | |
3345 | } | |
3346 | } | |
3347 | ||
3348 | while (--count >= 0) | |
3349 | { | |
3350 | char *p; | |
3351 | ||
3352 | p = frag_more (flen); | |
3353 | memcpy (p, temp, (unsigned int) flen); | |
3354 | } | |
3355 | ||
3356 | demand_empty_rest_of_line (); | |
3357 | ||
3358 | if (flag_mri) | |
3359 | mri_comment_end (stop, stopc); | |
3360 | } | |
3361 | ||
3362 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3363 | ||
3364 | void | |
39e6acbd | 3365 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3366 | { |
3367 | char *stop = NULL; | |
fb25138b | 3368 | char stopc = 0; |
252b5132 RH |
3369 | |
3370 | if (flag_mri) | |
3371 | stop = mri_comment_field (&stopc); | |
3372 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3373 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3374 | /* The ELF backend needs to know that we are changing sections, so | |
3375 | that .previous works correctly. */ | |
f43abd2b | 3376 | if (IS_ELF) |
a2902af6 TS |
3377 | obj_elf_section_change_hook (); |
3378 | #endif | |
252b5132 RH |
3379 | subseg_set (absolute_section, 0); |
3380 | demand_empty_rest_of_line (); | |
3381 | if (flag_mri) | |
3382 | mri_comment_end (stop, stopc); | |
3383 | } | |
3384 | ||
3385 | void | |
39e6acbd | 3386 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3387 | { |
3388 | register int temp; | |
3389 | ||
3390 | temp = get_absolute_expression (); | |
3391 | subseg_set (text_section, (subsegT) temp); | |
3392 | demand_empty_rest_of_line (); | |
3393 | #ifdef OBJ_VMS | |
3394 | const_flag &= ~IN_DEFAULT_SECTION; | |
3395 | #endif | |
041ff4dd | 3396 | } |
06e77878 AO |
3397 | |
3398 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3399 | referenced directly, will cause y to become a weak symbol. */ | |
3400 | void | |
3401 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3402 | { | |
3403 | char *name; | |
3404 | char delim; | |
3405 | char *end_name; | |
3406 | symbolS *symbolP; | |
3407 | symbolS *symbolP2; | |
3408 | expressionS exp; | |
3409 | ||
3410 | name = input_line_pointer; | |
3411 | delim = get_symbol_end (); | |
3412 | end_name = input_line_pointer; | |
3413 | ||
3414 | if (name == end_name) | |
3415 | { | |
3416 | as_bad (_("expected symbol name")); | |
3417 | *end_name = delim; | |
3418 | ignore_rest_of_line (); | |
3419 | return; | |
3420 | } | |
3421 | ||
3422 | symbolP = symbol_find_or_make (name); | |
3423 | ||
b54788f8 AO |
3424 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3425 | { | |
89cdfe57 | 3426 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3427 | { |
3428 | as_bad (_("symbol `%s' is already defined"), name); | |
3429 | *end_name = delim; | |
3430 | ignore_rest_of_line (); | |
3431 | return; | |
3432 | } | |
89cdfe57 | 3433 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3434 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3435 | } |
3436 | ||
06e77878 AO |
3437 | *end_name = delim; |
3438 | ||
3439 | SKIP_WHITESPACE (); | |
3440 | ||
3441 | if (*input_line_pointer != ',') | |
3442 | { | |
3443 | *end_name = 0; | |
3444 | as_bad (_("expected comma after \"%s\""), name); | |
3445 | *end_name = delim; | |
3446 | ignore_rest_of_line (); | |
3447 | return; | |
3448 | } | |
3449 | ||
3450 | input_line_pointer++; | |
3451 | ||
3452 | SKIP_WHITESPACE (); | |
3453 | ||
3454 | name = input_line_pointer; | |
3455 | delim = get_symbol_end (); | |
3456 | end_name = input_line_pointer; | |
3457 | ||
3458 | if (name == end_name) | |
3459 | { | |
3460 | as_bad (_("expected symbol name")); | |
3461 | ignore_rest_of_line (); | |
3462 | return; | |
3463 | } | |
3464 | ||
3465 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3466 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3467 | { | |
3468 | symbolP2 = symbol_find_or_make (name); | |
3469 | S_SET_WEAKREFD (symbolP2); | |
3470 | } | |
3471 | else | |
3472 | { | |
3473 | symbolS *symp = symbolP2; | |
3474 | ||
3475 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3476 | { | |
3477 | expressionS *expP = symbol_get_value_expression (symp); | |
3478 | ||
3479 | assert (expP->X_op == O_symbol | |
3480 | && expP->X_add_number == 0); | |
3481 | symp = expP->X_add_symbol; | |
3482 | } | |
3483 | if (symp == symbolP) | |
3484 | { | |
3485 | char *loop; | |
3486 | ||
3487 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3488 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3489 | |
3490 | symp = symbolP2; | |
3491 | while (symp != symbolP) | |
3492 | { | |
3493 | char *old_loop = loop; | |
3494 | symp = symbol_get_value_expression (symp)->X_add_symbol; | |
1bf57e9f AM |
3495 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3496 | (const char *) NULL); | |
06e77878 AO |
3497 | free (old_loop); |
3498 | } | |
3499 | ||
3500 | as_bad (_("%s: would close weakref loop: %s"), | |
3501 | S_GET_NAME (symbolP), loop); | |
3502 | ||
3503 | free (loop); | |
3504 | ||
3505 | *end_name = delim; | |
3506 | ignore_rest_of_line (); | |
3507 | return; | |
3508 | } | |
3509 | ||
3510 | /* Short-circuiting instead of just checking here might speed | |
3511 | things up a tiny little bit, but loop error messages would | |
3512 | miss intermediate links. */ | |
3513 | /* symbolP2 = symp; */ | |
3514 | } | |
3515 | ||
3516 | *end_name = delim; | |
3517 | ||
3518 | memset (&exp, 0, sizeof (exp)); | |
3519 | exp.X_op = O_symbol; | |
3520 | exp.X_add_symbol = symbolP2; | |
3521 | ||
3522 | S_SET_SEGMENT (symbolP, undefined_section); | |
3523 | symbol_set_value_expression (symbolP, &exp); | |
3524 | symbol_set_frag (symbolP, &zero_address_frag); | |
3525 | S_SET_WEAKREFR (symbolP); | |
3526 | ||
3527 | demand_empty_rest_of_line (); | |
3528 | } | |
252b5132 | 3529 | \f |
c95b35a9 NS |
3530 | |
3531 | /* Verify that we are at the end of a line. If not, issue an error and | |
3532 | skip to EOL. */ | |
3533 | ||
041ff4dd | 3534 | void |
39e6acbd | 3535 | demand_empty_rest_of_line (void) |
252b5132 RH |
3536 | { |
3537 | SKIP_WHITESPACE (); | |
3538 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3539 | input_line_pointer++; |
252b5132 | 3540 | else |
252b5132 | 3541 | { |
3882b010 | 3542 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3543 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3544 | *input_line_pointer); |
252b5132 | 3545 | else |
c95b35a9 | 3546 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3547 | *input_line_pointer); |
c95b35a9 | 3548 | ignore_rest_of_line (); |
252b5132 | 3549 | } |
c95b35a9 NS |
3550 | |
3551 | /* Return pointing just after end-of-line. */ | |
3552 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3553 | } | |
3554 | ||
3555 | /* Silently advance to the end of line. Use this after already having | |
3556 | issued an error about something bad. */ | |
3557 | ||
3558 | void | |
3559 | ignore_rest_of_line (void) | |
3560 | { | |
3561 | while (input_line_pointer < buffer_limit | |
3562 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3563 | input_line_pointer++; | |
f0e652b4 | 3564 | |
041ff4dd NC |
3565 | input_line_pointer++; |
3566 | ||
3567 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3568 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3569 | } | |
3570 | ||
be95a9c1 AM |
3571 | /* Sets frag for given symbol to zero_address_frag, except when the |
3572 | symbol frag is already set to a dummy listing frag. */ | |
3573 | ||
3574 | static void | |
3575 | set_zero_frag (symbolS *symbolP) | |
3576 | { | |
3577 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3578 | symbol_set_frag (symbolP, &zero_address_frag); | |
3579 | } | |
3580 | ||
041ff4dd | 3581 | /* In: Pointer to a symbol. |
d6415f6c | 3582 | Input_line_pointer->expression. |
f0e652b4 | 3583 | |
041ff4dd | 3584 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3585 | Tried to set symbol to value of expression. |
3586 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3587 | |
252b5132 | 3588 | void |
39e6acbd | 3589 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3590 | { |
3591 | expressionS exp; | |
be95a9c1 | 3592 | segT seg; |
252b5132 | 3593 | |
041ff4dd | 3594 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3595 | |
9497f5ac NC |
3596 | if (!S_IS_FORWARD_REF (symbolP)) |
3597 | (void) expression (&exp); | |
3598 | else | |
3599 | (void) deferred_expression (&exp); | |
252b5132 RH |
3600 | |
3601 | if (exp.X_op == O_illegal) | |
0e389e77 | 3602 | as_bad (_("illegal expression")); |
252b5132 | 3603 | else if (exp.X_op == O_absent) |
0e389e77 | 3604 | as_bad (_("missing expression")); |
252b5132 RH |
3605 | else if (exp.X_op == O_big) |
3606 | { | |
3607 | if (exp.X_add_number > 0) | |
0e389e77 | 3608 | as_bad (_("bignum invalid")); |
252b5132 | 3609 | else |
0e389e77 | 3610 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3611 | } |
3612 | else if (exp.X_op == O_subtract | |
9497f5ac | 3613 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3614 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3615 | && (symbol_get_frag (exp.X_add_symbol) |
3616 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3617 | { |
3618 | exp.X_op = O_constant; | |
3619 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3620 | - S_GET_VALUE (exp.X_op_symbol)); | |
3621 | } | |
3622 | ||
be95a9c1 AM |
3623 | if (symbol_section_p (symbolP)) |
3624 | { | |
3625 | as_bad ("attempt to set value of section symbol"); | |
3626 | return; | |
3627 | } | |
be95a9c1 | 3628 | |
252b5132 RH |
3629 | switch (exp.X_op) |
3630 | { | |
3631 | case O_illegal: | |
3632 | case O_absent: | |
3633 | case O_big: | |
3634 | exp.X_add_number = 0; | |
3635 | /* Fall through. */ | |
3636 | case O_constant: | |
3637 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3638 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3639 | set_zero_frag (symbolP); |
252b5132 RH |
3640 | break; |
3641 | ||
3642 | case O_register: | |
97c4f2d9 | 3643 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3644 | if (S_IS_EXTERNAL (symbolP)) |
3645 | { | |
3646 | as_bad ("can't equate global symbol `%s' with register name", | |
3647 | S_GET_NAME (symbolP)); | |
3648 | return; | |
3649 | } | |
97c4f2d9 | 3650 | #endif |
252b5132 RH |
3651 | S_SET_SEGMENT (symbolP, reg_section); |
3652 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3653 | set_zero_frag (symbolP); |
db557034 | 3654 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3655 | break; |
3656 | ||
3657 | case O_symbol: | |
be95a9c1 AM |
3658 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3659 | /* For x=undef+const, create an expression symbol. | |
3660 | For x=x+const, just update x except when x is an undefined symbol | |
3661 | For x=defined+const, evaluate x. */ | |
3662 | if (symbolP == exp.X_add_symbol | |
3663 | && (seg != undefined_section | |
3664 | || !symbol_constant_p (symbolP))) | |
3665 | { | |
3666 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3667 | break; | |
3668 | } | |
9497f5ac | 3669 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3670 | { |
3671 | symbolS *s = exp.X_add_symbol; | |
3672 | ||
60938e80 L |
3673 | if (S_IS_COMMON (s)) |
3674 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3675 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3676 | ||
be95a9c1 AM |
3677 | S_SET_SEGMENT (symbolP, seg); |
3678 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3679 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3680 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3681 | break; |
252b5132 | 3682 | } |
66bd02d3 AM |
3683 | S_SET_SEGMENT (symbolP, undefined_section); |
3684 | symbol_set_value_expression (symbolP, &exp); | |
3685 | set_zero_frag (symbolP); | |
3686 | break; | |
252b5132 RH |
3687 | |
3688 | default: | |
aba4aa7d AM |
3689 | /* The value is some complex expression. */ |
3690 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3691 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3692 | set_zero_frag (symbolP); |
252b5132 RH |
3693 | break; |
3694 | } | |
3695 | } | |
3696 | \f | |
d6415f6c | 3697 | /* cons() |
f0e652b4 | 3698 | |
041ff4dd NC |
3699 | CONStruct more frag of .bytes, or .words etc. |
3700 | Should need_pass_2 be 1 then emit no frag(s). | |
3701 | This understands EXPRESSIONS. | |
f0e652b4 | 3702 | |
041ff4dd | 3703 | Bug (?) |
f0e652b4 | 3704 | |
041ff4dd NC |
3705 | This has a split personality. We use expression() to read the |
3706 | value. We can detect if the value won't fit in a byte or word. | |
3707 | But we can't detect if expression() discarded significant digits | |
3708 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3709 | |
3710 | /* Select a parser for cons expressions. */ | |
3711 | ||
3712 | /* Some targets need to parse the expression in various fancy ways. | |
3713 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3714 | (for example, the HPPA does this). Otherwise, you can define | |
3715 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3716 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3717 | are defined, which is the normal case, then only simple expressions | |
3718 | are permitted. */ | |
3719 | ||
abd63a32 | 3720 | #ifdef TC_M68K |
252b5132 | 3721 | static void |
39e6acbd | 3722 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3723 | #endif |
252b5132 RH |
3724 | |
3725 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3726 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3727 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3728 | static void |
39e6acbd | 3729 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3730 | #endif |
3731 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3732 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3733 | static void | |
39e6acbd | 3734 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3735 | #endif |
3736 | ||
3737 | /* If we haven't gotten one yet, just call expression. */ | |
3738 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3739 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3740 | #endif | |
3741 | #endif | |
3742 | ||
cdfbf930 | 3743 | void |
b41b1f95 L |
3744 | do_parse_cons_expression (expressionS *exp, |
3745 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3746 | { |
3747 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3748 | } | |
3749 | ||
3750 | ||
041ff4dd NC |
3751 | /* Worker to do .byte etc statements. |
3752 | Clobbers input_line_pointer and checks end-of-line. */ | |
3753 | ||
3754 | static void | |
39e6acbd KH |
3755 | cons_worker (register int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
3756 | int rva) | |
252b5132 RH |
3757 | { |
3758 | int c; | |
3759 | expressionS exp; | |
3760 | char *stop = NULL; | |
fb25138b | 3761 | char stopc = 0; |
252b5132 RH |
3762 | |
3763 | #ifdef md_flush_pending_output | |
3764 | md_flush_pending_output (); | |
3765 | #endif | |
3766 | ||
3767 | if (flag_mri) | |
3768 | stop = mri_comment_field (&stopc); | |
3769 | ||
3770 | if (is_it_end_of_statement ()) | |
3771 | { | |
3772 | demand_empty_rest_of_line (); | |
3773 | if (flag_mri) | |
3774 | mri_comment_end (stop, stopc); | |
3775 | return; | |
3776 | } | |
3777 | ||
cc1bc22a AM |
3778 | #ifdef TC_ADDRESS_BYTES |
3779 | if (nbytes == 0) | |
3780 | nbytes = TC_ADDRESS_BYTES (); | |
3781 | #endif | |
3782 | ||
252b5132 RH |
3783 | #ifdef md_cons_align |
3784 | md_cons_align (nbytes); | |
3785 | #endif | |
3786 | ||
3787 | c = 0; | |
3788 | do | |
3789 | { | |
abd63a32 | 3790 | #ifdef TC_M68K |
252b5132 RH |
3791 | if (flag_m68k_mri) |
3792 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3793 | else | |
abd63a32 | 3794 | #endif |
252b5132 RH |
3795 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
3796 | ||
3797 | if (rva) | |
3798 | { | |
3799 | if (exp.X_op == O_symbol) | |
3800 | exp.X_op = O_symbol_rva; | |
3801 | else | |
3802 | as_fatal (_("rva without symbol")); | |
3803 | } | |
3804 | emit_expr (&exp, (unsigned int) nbytes); | |
3805 | ++c; | |
3806 | } | |
3807 | while (*input_line_pointer++ == ','); | |
3808 | ||
3809 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3810 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3811 | or dcb.b. */ | |
3812 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3813 | mri_pending_align = 1; | |
3814 | ||
041ff4dd | 3815 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3816 | |
3817 | demand_empty_rest_of_line (); | |
3818 | ||
3819 | if (flag_mri) | |
3820 | mri_comment_end (stop, stopc); | |
3821 | } | |
3822 | ||
252b5132 | 3823 | void |
39e6acbd | 3824 | cons (int size) |
252b5132 RH |
3825 | { |
3826 | cons_worker (size, 0); | |
3827 | } | |
3828 | ||
041ff4dd | 3829 | void |
39e6acbd | 3830 | s_rva (int size) |
252b5132 RH |
3831 | { |
3832 | cons_worker (size, 1); | |
3833 | } | |
3834 | ||
05e9452c AM |
3835 | /* .reloc offset, reloc_name, symbol+addend. */ |
3836 | ||
3837 | void | |
3838 | s_reloc (int ignore ATTRIBUTE_UNUSED) | |
3839 | { | |
3840 | char *stop = NULL; | |
3841 | char stopc = 0; | |
3842 | expressionS exp; | |
3843 | char *r_name; | |
3844 | int c; | |
3845 | struct reloc_list *reloc; | |
3846 | ||
3847 | reloc = xmalloc (sizeof (*reloc)); | |
3848 | ||
3849 | if (flag_mri) | |
3850 | stop = mri_comment_field (&stopc); | |
3851 | ||
3852 | expression (&exp); | |
3853 | switch (exp.X_op) | |
3854 | { | |
3855 | case O_illegal: | |
3856 | case O_absent: | |
3857 | case O_big: | |
3858 | case O_register: | |
3859 | as_bad (_("missing or bad offset expression")); | |
3860 | goto err_out; | |
3861 | case O_constant: | |
3862 | exp.X_add_symbol = section_symbol (now_seg); | |
3863 | exp.X_op = O_symbol; | |
3864 | /* Fall thru */ | |
3865 | case O_symbol: | |
3866 | if (exp.X_add_number == 0) | |
3867 | { | |
3868 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
3869 | break; | |
3870 | } | |
3871 | /* Fall thru */ | |
3872 | default: | |
3873 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
3874 | break; | |
3875 | } | |
3876 | ||
3877 | SKIP_WHITESPACE (); | |
3878 | if (*input_line_pointer != ',') | |
3879 | { | |
3880 | as_bad (_("missing reloc type")); | |
3881 | goto err_out; | |
3882 | } | |
3883 | ||
3884 | ++input_line_pointer; | |
3885 | SKIP_WHITESPACE (); | |
3886 | r_name = input_line_pointer; | |
3887 | c = get_symbol_end (); | |
3888 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
3889 | *input_line_pointer = c; | |
3890 | if (reloc->u.a.howto == NULL) | |
3891 | { | |
3892 | as_bad (_("unrecognized reloc type")); | |
3893 | goto err_out; | |
3894 | } | |
3895 | ||
3896 | exp.X_op = O_absent; | |
3897 | SKIP_WHITESPACE (); | |
3898 | if (*input_line_pointer == ',') | |
3899 | { | |
3900 | ++input_line_pointer; | |
3901 | expression_and_evaluate (&exp); | |
3902 | } | |
3903 | switch (exp.X_op) | |
3904 | { | |
3905 | case O_illegal: | |
3906 | case O_big: | |
3907 | case O_register: | |
3908 | as_bad (_("bad reloc expression")); | |
3909 | err_out: | |
3910 | ignore_rest_of_line (); | |
3911 | free (reloc); | |
3912 | if (flag_mri) | |
3913 | mri_comment_end (stop, stopc); | |
3914 | return; | |
3915 | case O_absent: | |
3916 | reloc->u.a.sym = NULL; | |
3917 | reloc->u.a.addend = 0; | |
3918 | break; | |
3919 | case O_constant: | |
3920 | reloc->u.a.sym = NULL; | |
3921 | reloc->u.a.addend = exp.X_add_number; | |
3922 | break; | |
3923 | case O_symbol: | |
3924 | reloc->u.a.sym = exp.X_add_symbol; | |
3925 | reloc->u.a.addend = exp.X_add_number; | |
3926 | break; | |
3927 | default: | |
3928 | reloc->u.a.sym = make_expr_symbol (&exp); | |
3929 | reloc->u.a.addend = 0; | |
3930 | break; | |
3931 | } | |
3932 | ||
3933 | as_where (&reloc->file, &reloc->line); | |
3934 | reloc->next = reloc_list; | |
3935 | reloc_list = reloc; | |
3936 | ||
3937 | demand_empty_rest_of_line (); | |
3938 | if (flag_mri) | |
3939 | mri_comment_end (stop, stopc); | |
3940 | } | |
3941 | ||
252b5132 RH |
3942 | /* Put the contents of expression EXP into the object file using |
3943 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
3944 | ||
3945 | void | |
39e6acbd | 3946 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
3947 | { |
3948 | operatorT op; | |
3949 | register char *p; | |
3950 | valueT extra_digit = 0; | |
3951 | ||
3952 | /* Don't do anything if we are going to make another pass. */ | |
3953 | if (need_pass_2) | |
3954 | return; | |
3955 | ||
4bc25101 NC |
3956 | /* Grow the current frag now so that dot_value does not get invalidated |
3957 | if the frag were to fill up in the frag_more() call below. */ | |
3958 | frag_grow (nbytes); | |
ed7d5d1a AM |
3959 | dot_value = frag_now_fix (); |
3960 | ||
252b5132 RH |
3961 | #ifndef NO_LISTING |
3962 | #ifdef OBJ_ELF | |
3963 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
3964 | appear as a four byte positive constant in the .line section, | |
3965 | followed by a 2 byte 0xffff. Look for that case here. */ | |
3966 | { | |
3967 | static int dwarf_line = -1; | |
3968 | ||
3969 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
3970 | dwarf_line = -1; | |
3971 | else if (dwarf_line >= 0 | |
3972 | && nbytes == 2 | |
3973 | && exp->X_op == O_constant | |
3974 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
3975 | listing_source_line ((unsigned int) dwarf_line); | |
3976 | else if (nbytes == 4 | |
3977 | && exp->X_op == O_constant | |
3978 | && exp->X_add_number >= 0) | |
3979 | dwarf_line = exp->X_add_number; | |
3980 | else | |
3981 | dwarf_line = -1; | |
3982 | } | |
3983 | ||
3984 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
3985 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
3986 | AT_sibling (0x12) followed by a four byte address of the sibling | |
3987 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
3988 | file. We look for that case here. */ | |
3989 | { | |
3990 | static int dwarf_file = 0; | |
3991 | ||
3992 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
3993 | dwarf_file = 0; | |
3994 | else if (dwarf_file == 0 | |
3995 | && nbytes == 2 | |
3996 | && exp->X_op == O_constant | |
3997 | && exp->X_add_number == 0x11) | |
3998 | dwarf_file = 1; | |
3999 | else if (dwarf_file == 1 | |
4000 | && nbytes == 2 | |
4001 | && exp->X_op == O_constant | |
4002 | && exp->X_add_number == 0x12) | |
4003 | dwarf_file = 2; | |
4004 | else if (dwarf_file == 2 | |
4005 | && nbytes == 4) | |
4006 | dwarf_file = 3; | |
4007 | else if (dwarf_file == 3 | |
4008 | && nbytes == 2 | |
4009 | && exp->X_op == O_constant | |
4010 | && exp->X_add_number == 0x38) | |
4011 | dwarf_file = 4; | |
4012 | else | |
4013 | dwarf_file = 0; | |
4014 | ||
4015 | /* The variable dwarf_file_string tells stringer that the string | |
4016 | may be the name of the source file. */ | |
4017 | if (dwarf_file == 4) | |
4018 | dwarf_file_string = 1; | |
4019 | else | |
4020 | dwarf_file_string = 0; | |
4021 | } | |
4022 | #endif | |
4023 | #endif | |
4024 | ||
4025 | if (check_eh_frame (exp, &nbytes)) | |
4026 | return; | |
4027 | ||
4028 | op = exp->X_op; | |
4029 | ||
4030 | /* Allow `.word 0' in the absolute section. */ | |
4031 | if (now_seg == absolute_section) | |
4032 | { | |
4033 | if (op != O_constant || exp->X_add_number != 0) | |
4034 | as_bad (_("attempt to store value in absolute section")); | |
4035 | abs_section_offset += nbytes; | |
4036 | return; | |
4037 | } | |
4038 | ||
4039 | /* Handle a negative bignum. */ | |
4040 | if (op == O_uminus | |
4041 | && exp->X_add_number == 0 | |
2b47531b ILT |
4042 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4043 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4044 | { |
4045 | int i; | |
4046 | unsigned long carry; | |
4047 | ||
2b47531b | 4048 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4049 | |
4050 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4051 | carry = 1; | |
4052 | for (i = 0; i < exp->X_add_number; i++) | |
4053 | { | |
4054 | unsigned long next; | |
4055 | ||
041ff4dd | 4056 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4057 | & LITTLENUM_MASK) |
4058 | + carry); | |
4059 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4060 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4061 | } | |
4062 | ||
4063 | /* We can ignore any carry out, because it will be handled by | |
4064 | extra_digit if it is needed. */ | |
4065 | ||
4066 | extra_digit = (valueT) -1; | |
4067 | op = O_big; | |
4068 | } | |
4069 | ||
4070 | if (op == O_absent || op == O_illegal) | |
4071 | { | |
4072 | as_warn (_("zero assumed for missing expression")); | |
4073 | exp->X_add_number = 0; | |
4074 | op = O_constant; | |
4075 | } | |
4076 | else if (op == O_big && exp->X_add_number <= 0) | |
4077 | { | |
0e389e77 | 4078 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4079 | exp->X_add_number = 0; |
4080 | op = O_constant; | |
4081 | } | |
4082 | else if (op == O_register) | |
4083 | { | |
4084 | as_warn (_("register value used as expression")); | |
4085 | op = O_constant; | |
4086 | } | |
4087 | ||
4088 | p = frag_more ((int) nbytes); | |
4089 | ||
4090 | #ifndef WORKING_DOT_WORD | |
4091 | /* If we have the difference of two symbols in a word, save it on | |
4092 | the broken_words list. See the code in write.c. */ | |
4093 | if (op == O_subtract && nbytes == 2) | |
4094 | { | |
4095 | struct broken_word *x; | |
4096 | ||
4097 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
4098 | x->next_broken_word = broken_words; | |
4099 | broken_words = x; | |
4100 | x->seg = now_seg; | |
4101 | x->subseg = now_subseg; | |
4102 | x->frag = frag_now; | |
4103 | x->word_goes_here = p; | |
4104 | x->dispfrag = 0; | |
4105 | x->add = exp->X_add_symbol; | |
4106 | x->sub = exp->X_op_symbol; | |
4107 | x->addnum = exp->X_add_number; | |
4108 | x->added = 0; | |
dc59a897 | 4109 | x->use_jump = 0; |
252b5132 RH |
4110 | new_broken_words++; |
4111 | return; | |
4112 | } | |
4113 | #endif | |
4114 | ||
4115 | /* If we have an integer, but the number of bytes is too large to | |
4116 | pass to md_number_to_chars, handle it as a bignum. */ | |
4117 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4118 | { | |
e5604d79 RS |
4119 | extra_digit = exp->X_unsigned ? 0 : -1; |
4120 | convert_to_bignum (exp); | |
4121 | op = O_big; | |
252b5132 RH |
4122 | } |
4123 | ||
4124 | if (op == O_constant) | |
4125 | { | |
4126 | register valueT get; | |
4127 | register valueT use; | |
4128 | register valueT mask; | |
4129 | valueT hibit; | |
4130 | register valueT unmask; | |
4131 | ||
4132 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4133 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4134 | if (nbytes >= sizeof (valueT)) |
4135 | { | |
4136 | mask = 0; | |
4137 | if (nbytes > sizeof (valueT)) | |
4138 | hibit = 0; | |
4139 | else | |
4140 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4141 | } | |
4142 | else | |
4143 | { | |
041ff4dd | 4144 | /* Don't store these bits. */ |
252b5132 RH |
4145 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4146 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4147 | } | |
4148 | ||
041ff4dd | 4149 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4150 | |
4151 | #ifdef NEVER | |
4152 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4153 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4154 | #endif |
4155 | ||
4156 | get = exp->X_add_number; | |
4157 | use = get & unmask; | |
4158 | if ((get & mask) != 0 | |
4159 | && ((get & mask) != mask | |
4160 | || (get & hibit) == 0)) | |
041ff4dd | 4161 | { /* Leading bits contain both 0s & 1s. */ |
b6ac5419 | 4162 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4163 | #ifndef __MSVCRT__ |
5c612369 NC |
4164 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4165 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4166 | #else |
4167 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4168 | (unsigned long long) get, (unsigned long long) use); | |
4169 | #endif | |
b6ac5419 AM |
4170 | #else |
4171 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4172 | (unsigned long) get, (unsigned long) use); | |
4173 | #endif | |
252b5132 | 4174 | } |
041ff4dd | 4175 | /* Put bytes in right order. */ |
252b5132 RH |
4176 | md_number_to_chars (p, use, (int) nbytes); |
4177 | } | |
4178 | else if (op == O_big) | |
4179 | { | |
4180 | unsigned int size; | |
4181 | LITTLENUM_TYPE *nums; | |
4182 | ||
4183 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4184 | ||
4185 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
4186 | if (nbytes < size) | |
4187 | { | |
0e389e77 | 4188 | as_warn (_("bignum truncated to %d bytes"), nbytes); |
252b5132 RH |
4189 | size = nbytes; |
4190 | } | |
4191 | ||
4192 | if (target_big_endian) | |
4193 | { | |
4194 | while (nbytes > size) | |
4195 | { | |
4196 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4197 | nbytes -= CHARS_PER_LITTLENUM; | |
4198 | p += CHARS_PER_LITTLENUM; | |
4199 | } | |
4200 | ||
4201 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4202 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4203 | { |
4204 | --nums; | |
4205 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4206 | size -= CHARS_PER_LITTLENUM; | |
4207 | p += CHARS_PER_LITTLENUM; | |
4208 | } | |
4209 | } | |
4210 | else | |
4211 | { | |
4212 | nums = generic_bignum; | |
ceac3f62 | 4213 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4214 | { |
4215 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4216 | ++nums; | |
4217 | size -= CHARS_PER_LITTLENUM; | |
4218 | p += CHARS_PER_LITTLENUM; | |
4219 | nbytes -= CHARS_PER_LITTLENUM; | |
4220 | } | |
4221 | ||
ceac3f62 | 4222 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4223 | { |
4224 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4225 | nbytes -= CHARS_PER_LITTLENUM; | |
4226 | p += CHARS_PER_LITTLENUM; | |
4227 | } | |
4228 | } | |
4229 | } | |
4230 | else | |
7ddd14de BW |
4231 | emit_expr_fix (exp, nbytes, frag_now, p); |
4232 | } | |
4233 | ||
4234 | void | |
4235 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p) | |
4236 | { | |
4237 | memset (p, 0, nbytes); | |
252b5132 | 4238 | |
7ddd14de | 4239 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4240 | |
252b5132 | 4241 | #ifdef TC_CONS_FIX_NEW |
7ddd14de | 4242 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal, nbytes, exp); |
252b5132 | 4243 | #else |
7ddd14de BW |
4244 | { |
4245 | bfd_reloc_code_real_type r; | |
252b5132 | 4246 | |
7ddd14de BW |
4247 | switch (nbytes) |
4248 | { | |
4249 | case 1: | |
4250 | r = BFD_RELOC_8; | |
4251 | break; | |
4252 | case 2: | |
4253 | r = BFD_RELOC_16; | |
4254 | break; | |
4255 | case 4: | |
4256 | r = BFD_RELOC_32; | |
4257 | break; | |
4258 | case 8: | |
4259 | r = BFD_RELOC_64; | |
4260 | break; | |
4261 | default: | |
4262 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
4263 | r = BFD_RELOC_32; | |
4264 | break; | |
252b5132 | 4265 | } |
7ddd14de BW |
4266 | fix_new_exp (frag, p - frag->fr_literal, (int) nbytes, exp, |
4267 | 0, r); | |
4268 | } | |
252b5132 | 4269 | #endif |
252b5132 RH |
4270 | } |
4271 | \f | |
4272 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
4273 | ||
4274 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
4275 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
4276 | then pack them all together. We do a little better in that we allow | |
4277 | them in words, longs, etc. and we'll pack them in target byte order | |
4278 | for you. | |
4279 | ||
47eebc20 | 4280 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
4281 | entirely fit, put it in the next unit. Overflowing the bitfield is |
4282 | explicitly *not* even a warning. The bitwidth should be considered | |
4283 | a "mask". | |
4284 | ||
4285 | To use this function the tc-XXX.h file should define | |
4286 | BITFIELD_CONS_EXPRESSIONS. */ | |
4287 | ||
041ff4dd | 4288 | static void |
252b5132 RH |
4289 | parse_bitfield_cons (exp, nbytes) |
4290 | expressionS *exp; | |
4291 | unsigned int nbytes; | |
4292 | { | |
4293 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
4294 | char *hold = input_line_pointer; | |
4295 | ||
4296 | (void) expression (exp); | |
4297 | ||
4298 | if (*input_line_pointer == ':') | |
041ff4dd NC |
4299 | { |
4300 | /* Bitfields. */ | |
252b5132 RH |
4301 | long value = 0; |
4302 | ||
4303 | for (;;) | |
4304 | { | |
4305 | unsigned long width; | |
4306 | ||
4307 | if (*input_line_pointer != ':') | |
4308 | { | |
4309 | input_line_pointer = hold; | |
4310 | break; | |
041ff4dd | 4311 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
4312 | |
4313 | /* In the general case, we can't allow | |
4314 | full expressions with symbol | |
4315 | differences and such. The relocation | |
4316 | entries for symbols not defined in this | |
4317 | assembly would require arbitrary field | |
4318 | widths, positions, and masks which most | |
4319 | of our current object formats don't | |
4320 | support. | |
4321 | ||
4322 | In the specific case where a symbol | |
4323 | *is* defined in this assembly, we | |
4324 | *could* build fixups and track it, but | |
4325 | this could lead to confusion for the | |
4326 | backends. I'm lazy. I'll take any | |
4327 | SEG_ABSOLUTE. I think that means that | |
4328 | you can use a previous .set or | |
041ff4dd | 4329 | .equ type symbol. xoxorich. */ |
252b5132 RH |
4330 | |
4331 | if (exp->X_op == O_absent) | |
4332 | { | |
4333 | as_warn (_("using a bit field width of zero")); | |
4334 | exp->X_add_number = 0; | |
4335 | exp->X_op = O_constant; | |
041ff4dd | 4336 | } /* Implied zero width bitfield. */ |
252b5132 RH |
4337 | |
4338 | if (exp->X_op != O_constant) | |
4339 | { | |
4340 | *input_line_pointer = '\0'; | |
4341 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
4342 | *input_line_pointer = ':'; | |
4343 | demand_empty_rest_of_line (); | |
4344 | return; | |
041ff4dd | 4345 | } /* Too complex. */ |
252b5132 RH |
4346 | |
4347 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
4348 | { | |
4349 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
4350 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
4351 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 4352 | } /* Too big. */ |
252b5132 RH |
4353 | |
4354 | if (width > bits_available) | |
4355 | { | |
4356 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
4357 | input_line_pointer = hold; | |
4358 | exp->X_add_number = value; | |
4359 | break; | |
041ff4dd | 4360 | } /* Won't fit. */ |
252b5132 | 4361 | |
ef99799a KH |
4362 | /* Skip ':'. */ |
4363 | hold = ++input_line_pointer; | |
252b5132 RH |
4364 | |
4365 | (void) expression (exp); | |
4366 | if (exp->X_op != O_constant) | |
4367 | { | |
4368 | char cache = *input_line_pointer; | |
4369 | ||
4370 | *input_line_pointer = '\0'; | |
4371 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
4372 | *input_line_pointer = cache; | |
4373 | demand_empty_rest_of_line (); | |
4374 | return; | |
041ff4dd | 4375 | } /* Too complex. */ |
252b5132 RH |
4376 | |
4377 | value |= ((~(-1 << width) & exp->X_add_number) | |
4378 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
4379 | ||
4380 | if ((bits_available -= width) == 0 | |
4381 | || is_it_end_of_statement () | |
4382 | || *input_line_pointer != ',') | |
4383 | { | |
4384 | break; | |
041ff4dd | 4385 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4386 | |
4387 | hold = ++input_line_pointer; | |
4388 | (void) expression (exp); | |
041ff4dd | 4389 | } |
252b5132 RH |
4390 | |
4391 | exp->X_add_number = value; | |
4392 | exp->X_op = O_constant; | |
4393 | exp->X_unsigned = 1; | |
041ff4dd NC |
4394 | } |
4395 | } | |
252b5132 RH |
4396 | |
4397 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4398 | \f | |
4399 | /* Handle an MRI style string expression. */ | |
4400 | ||
abd63a32 | 4401 | #ifdef TC_M68K |
252b5132 RH |
4402 | static void |
4403 | parse_mri_cons (exp, nbytes) | |
4404 | expressionS *exp; | |
4405 | unsigned int nbytes; | |
4406 | { | |
4407 | if (*input_line_pointer != '\'' | |
4408 | && (input_line_pointer[1] != '\'' | |
4409 | || (*input_line_pointer != 'A' | |
4410 | && *input_line_pointer != 'E'))) | |
4411 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
4412 | else | |
4413 | { | |
4414 | unsigned int scan; | |
4415 | unsigned int result = 0; | |
4416 | ||
4417 | /* An MRI style string. Cut into as many bytes as will fit into | |
4418 | a nbyte chunk, left justify if necessary, and separate with | |
4419 | commas so we can try again later. */ | |
4420 | if (*input_line_pointer == 'A') | |
4421 | ++input_line_pointer; | |
4422 | else if (*input_line_pointer == 'E') | |
4423 | { | |
4424 | as_bad (_("EBCDIC constants are not supported")); | |
4425 | ++input_line_pointer; | |
4426 | } | |
4427 | ||
4428 | input_line_pointer++; | |
4429 | for (scan = 0; scan < nbytes; scan++) | |
4430 | { | |
4431 | if (*input_line_pointer == '\'') | |
4432 | { | |
4433 | if (input_line_pointer[1] == '\'') | |
4434 | { | |
4435 | input_line_pointer++; | |
4436 | } | |
4437 | else | |
4438 | break; | |
4439 | } | |
4440 | result = (result << 8) | (*input_line_pointer++); | |
4441 | } | |
4442 | ||
041ff4dd | 4443 | /* Left justify. */ |
252b5132 RH |
4444 | while (scan < nbytes) |
4445 | { | |
4446 | result <<= 8; | |
4447 | scan++; | |
4448 | } | |
f0e652b4 | 4449 | |
041ff4dd | 4450 | /* Create correct expression. */ |
252b5132 RH |
4451 | exp->X_op = O_constant; |
4452 | exp->X_add_number = result; | |
f0e652b4 | 4453 | |
041ff4dd | 4454 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4455 | if (input_line_pointer[0] != '\'' || |
4456 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4457 | { | |
4458 | input_line_pointer -= 2; | |
4459 | input_line_pointer[0] = ','; | |
4460 | input_line_pointer[1] = '\''; | |
4461 | } | |
4462 | else | |
4463 | input_line_pointer++; | |
4464 | } | |
4465 | } | |
abd63a32 | 4466 | #endif /* TC_M68K */ |
252b5132 RH |
4467 | \f |
4468 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4469 | ||
4470 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4471 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4472 | object file COUNT times. | |
4473 | ||
4474 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4475 | ||
4476 | static void | |
4477 | parse_repeat_cons (exp, nbytes) | |
4478 | expressionS *exp; | |
4479 | unsigned int nbytes; | |
4480 | { | |
4481 | expressionS count; | |
4482 | register int i; | |
4483 | ||
4484 | expression (exp); | |
4485 | ||
4486 | if (*input_line_pointer != ':') | |
4487 | { | |
4488 | /* No repeat count. */ | |
4489 | return; | |
4490 | } | |
4491 | ||
4492 | ++input_line_pointer; | |
4493 | expression (&count); | |
4494 | if (count.X_op != O_constant | |
4495 | || count.X_add_number <= 0) | |
4496 | { | |
0e389e77 | 4497 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4498 | return; |
4499 | } | |
4500 | ||
4501 | /* The cons function is going to output this expression once. So we | |
4502 | output it count - 1 times. */ | |
4503 | for (i = count.X_add_number - 1; i > 0; i--) | |
4504 | emit_expr (exp, nbytes); | |
4505 | } | |
4506 | ||
4507 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4508 | \f | |
4509 | /* Parse a floating point number represented as a hex constant. This | |
4510 | permits users to specify the exact bits they want in the floating | |
4511 | point number. */ | |
4512 | ||
4513 | static int | |
39e6acbd | 4514 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4515 | { |
4516 | int length; | |
4517 | int i; | |
4518 | ||
4519 | switch (float_type) | |
4520 | { | |
4521 | case 'f': | |
4522 | case 'F': | |
4523 | case 's': | |
4524 | case 'S': | |
4525 | length = 4; | |
4526 | break; | |
4527 | ||
4528 | case 'd': | |
4529 | case 'D': | |
4530 | case 'r': | |
4531 | case 'R': | |
4532 | length = 8; | |
4533 | break; | |
4534 | ||
4535 | case 'x': | |
4536 | case 'X': | |
4537 | length = 12; | |
4538 | break; | |
4539 | ||
4540 | case 'p': | |
4541 | case 'P': | |
4542 | length = 12; | |
4543 | break; | |
4544 | ||
4545 | default: | |
0e389e77 | 4546 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4547 | return -1; |
4548 | } | |
4549 | ||
4550 | /* It would be nice if we could go through expression to parse the | |
4551 | hex constant, but if we get a bignum it's a pain to sort it into | |
4552 | the buffer correctly. */ | |
4553 | i = 0; | |
4554 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4555 | { | |
4556 | int d; | |
4557 | ||
4558 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4559 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4560 | if (*input_line_pointer == '_') |
4561 | { | |
4562 | ++input_line_pointer; | |
4563 | continue; | |
4564 | } | |
4565 | ||
4566 | if (i >= length) | |
4567 | { | |
0e389e77 | 4568 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4569 | return -1; |
4570 | } | |
4571 | d = hex_value (*input_line_pointer) << 4; | |
4572 | ++input_line_pointer; | |
4573 | while (*input_line_pointer == '_') | |
4574 | ++input_line_pointer; | |
4575 | if (hex_p (*input_line_pointer)) | |
4576 | { | |
4577 | d += hex_value (*input_line_pointer); | |
4578 | ++input_line_pointer; | |
4579 | } | |
4580 | if (target_big_endian) | |
4581 | bytes[i] = d; | |
4582 | else | |
4583 | bytes[length - i - 1] = d; | |
4584 | ++i; | |
4585 | } | |
4586 | ||
4587 | if (i < length) | |
4588 | { | |
4589 | if (target_big_endian) | |
4590 | memset (bytes + i, 0, length - i); | |
4591 | else | |
4592 | memset (bytes, 0, length - i); | |
4593 | } | |
4594 | ||
4595 | return length; | |
4596 | } | |
4597 | ||
d6415f6c | 4598 | /* float_cons() |
f0e652b4 | 4599 | |
041ff4dd NC |
4600 | CONStruct some more frag chars of .floats .ffloats etc. |
4601 | Makes 0 or more new frags. | |
4602 | If need_pass_2 == 1, no frags are emitted. | |
4603 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4604 | |
041ff4dd NC |
4605 | A floating constant is defined by atof_generic(), except it is preceded |
4606 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4607 | reading, I decided to be incompatible. This always tries to give you | |
4608 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4609 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4610 | a choice of 2 flavours of noise according to which of 2 floating-point |
4611 | scanners you directed AS to use. | |
f0e652b4 | 4612 | |
041ff4dd | 4613 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4614 | |
4615 | void | |
39e6acbd KH |
4616 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
4617 | register int float_type /* 'f':.ffloat ... 'F':.float ... */) | |
252b5132 RH |
4618 | { |
4619 | register char *p; | |
041ff4dd NC |
4620 | int length; /* Number of chars in an object. */ |
4621 | register char *err; /* Error from scanning floating literal. */ | |
252b5132 RH |
4622 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4623 | ||
4624 | if (is_it_end_of_statement ()) | |
4625 | { | |
4626 | demand_empty_rest_of_line (); | |
4627 | return; | |
4628 | } | |
4629 | ||
4630 | #ifdef md_flush_pending_output | |
4631 | md_flush_pending_output (); | |
4632 | #endif | |
4633 | ||
4634 | do | |
4635 | { | |
041ff4dd | 4636 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4637 | SKIP_WHITESPACE (); |
4638 | ||
4639 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4640 | letter is legal. Someone may invent a "z" format and this routine |
4641 | has no use for such information. Lusers beware: you get | |
4642 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4643 | if (input_line_pointer[0] == '0' |
3882b010 | 4644 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4645 | input_line_pointer += 2; |
4646 | ||
4647 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4648 | point with the exact digits specified. */ |
252b5132 RH |
4649 | if (input_line_pointer[0] == ':') |
4650 | { | |
4651 | ++input_line_pointer; | |
4652 | length = hex_float (float_type, temp); | |
4653 | if (length < 0) | |
4654 | { | |
4655 | ignore_rest_of_line (); | |
4656 | return; | |
4657 | } | |
4658 | } | |
4659 | else | |
4660 | { | |
4661 | err = md_atof (float_type, temp, &length); | |
4662 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4663 | know (err != NULL || length > 0); |
252b5132 RH |
4664 | if (err) |
4665 | { | |
0e389e77 | 4666 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4667 | ignore_rest_of_line (); |
4668 | return; | |
4669 | } | |
4670 | } | |
4671 | ||
4672 | if (!need_pass_2) | |
4673 | { | |
4674 | int count; | |
4675 | ||
4676 | count = 1; | |
4677 | ||
4678 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4679 | if (*input_line_pointer == ':') | |
4680 | { | |
4681 | expressionS count_exp; | |
4682 | ||
4683 | ++input_line_pointer; | |
4684 | expression (&count_exp); | |
f0e652b4 | 4685 | |
252b5132 RH |
4686 | if (count_exp.X_op != O_constant |
4687 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4688 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4689 | else |
4690 | count = count_exp.X_add_number; | |
4691 | } | |
4692 | #endif | |
4693 | ||
4694 | while (--count >= 0) | |
4695 | { | |
4696 | p = frag_more (length); | |
4697 | memcpy (p, temp, (unsigned int) length); | |
4698 | } | |
4699 | } | |
4700 | SKIP_WHITESPACE (); | |
4701 | } | |
4702 | while (*input_line_pointer++ == ','); | |
4703 | ||
041ff4dd NC |
4704 | /* Put terminator back into stream. */ |
4705 | --input_line_pointer; | |
252b5132 | 4706 | demand_empty_rest_of_line (); |
041ff4dd | 4707 | } |
252b5132 | 4708 | \f |
041ff4dd | 4709 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4710 | |
4711 | static inline int | |
39e6acbd | 4712 | sizeof_sleb128 (offsetT value) |
252b5132 RH |
4713 | { |
4714 | register int size = 0; | |
4715 | register unsigned byte; | |
4716 | ||
4717 | do | |
4718 | { | |
4719 | byte = (value & 0x7f); | |
4720 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4721 | Fortunately, we can structure things so that the extra work reduces | |
4722 | to a noop on systems that do things "properly". */ | |
4723 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4724 | size += 1; | |
4725 | } | |
4726 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4727 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4728 | ||
4729 | return size; | |
4730 | } | |
4731 | ||
4732 | static inline int | |
39e6acbd | 4733 | sizeof_uleb128 (valueT value) |
252b5132 RH |
4734 | { |
4735 | register int size = 0; | |
4736 | register unsigned byte; | |
4737 | ||
4738 | do | |
4739 | { | |
4740 | byte = (value & 0x7f); | |
4741 | value >>= 7; | |
4742 | size += 1; | |
4743 | } | |
4744 | while (value != 0); | |
4745 | ||
4746 | return size; | |
4747 | } | |
4748 | ||
4749 | int | |
39e6acbd | 4750 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4751 | { |
4752 | if (sign) | |
4753 | return sizeof_sleb128 ((offsetT) value); | |
4754 | else | |
4755 | return sizeof_uleb128 (value); | |
4756 | } | |
4757 | ||
4758 | /* Output a LEB128 value. */ | |
4759 | ||
4760 | static inline int | |
39e6acbd | 4761 | output_sleb128 (char *p, offsetT value) |
252b5132 RH |
4762 | { |
4763 | register char *orig = p; | |
4764 | register int more; | |
4765 | ||
4766 | do | |
4767 | { | |
4768 | unsigned byte = (value & 0x7f); | |
4769 | ||
4770 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4771 | Fortunately, we can structure things so that the extra work reduces | |
4772 | to a noop on systems that do things "properly". */ | |
4773 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4774 | ||
4775 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4776 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4777 | if (more) | |
4778 | byte |= 0x80; | |
4779 | ||
4780 | *p++ = byte; | |
4781 | } | |
4782 | while (more); | |
4783 | ||
4784 | return p - orig; | |
4785 | } | |
4786 | ||
4787 | static inline int | |
39e6acbd | 4788 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4789 | { |
4790 | char *orig = p; | |
4791 | ||
4792 | do | |
4793 | { | |
4794 | unsigned byte = (value & 0x7f); | |
4795 | value >>= 7; | |
4796 | if (value != 0) | |
4797 | /* More bytes to follow. */ | |
4798 | byte |= 0x80; | |
4799 | ||
4800 | *p++ = byte; | |
4801 | } | |
4802 | while (value != 0); | |
4803 | ||
4804 | return p - orig; | |
4805 | } | |
4806 | ||
4807 | int | |
39e6acbd | 4808 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4809 | { |
4810 | if (sign) | |
4811 | return output_sleb128 (p, (offsetT) value); | |
4812 | else | |
4813 | return output_uleb128 (p, value); | |
4814 | } | |
4815 | ||
4816 | /* Do the same for bignums. We combine sizeof with output here in that | |
4817 | we don't output for NULL values of P. It isn't really as critical as | |
4818 | for "normal" values that this be streamlined. */ | |
4819 | ||
6d4d30bb | 4820 | static inline int |
39e6acbd | 4821 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4822 | { |
4823 | char *orig = p; | |
4824 | valueT val = 0; | |
4825 | int loaded = 0; | |
4826 | unsigned byte; | |
4827 | ||
4828 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4829 | while (size > 1 |
4830 | && bignum[size - 1] == LITTLENUM_MASK | |
4831 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4832 | size--; |
4833 | ||
4834 | do | |
4835 | { | |
e5604d79 RS |
4836 | /* OR in the next part of the littlenum. */ |
4837 | val |= (*bignum << loaded); | |
4838 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4839 | size--; | |
4840 | bignum++; | |
4841 | ||
4842 | /* Add bytes until there are less than 7 bits left in VAL | |
4843 | or until every non-sign bit has been written. */ | |
4844 | do | |
252b5132 | 4845 | { |
e5604d79 RS |
4846 | byte = val & 0x7f; |
4847 | loaded -= 7; | |
4848 | val >>= 7; | |
4849 | if (size > 0 | |
4850 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 4851 | byte |= 0x80; |
e5604d79 RS |
4852 | |
4853 | if (orig) | |
4854 | *p = byte; | |
4855 | p++; | |
252b5132 | 4856 | } |
e5604d79 RS |
4857 | while ((byte & 0x80) != 0 && loaded >= 7); |
4858 | } | |
4859 | while (size > 0); | |
252b5132 | 4860 | |
e5604d79 RS |
4861 | /* Mop up any left-over bits (of which there will be less than 7). */ |
4862 | if ((byte & 0x80) != 0) | |
4863 | { | |
4864 | /* Sign-extend VAL. */ | |
4865 | if (val & (1 << (loaded - 1))) | |
4866 | val |= ~0 << loaded; | |
252b5132 | 4867 | if (orig) |
e5604d79 | 4868 | *p = val & 0x7f; |
252b5132 RH |
4869 | p++; |
4870 | } | |
252b5132 RH |
4871 | |
4872 | return p - orig; | |
4873 | } | |
4874 | ||
6d4d30bb | 4875 | static inline int |
39e6acbd | 4876 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4877 | { |
4878 | char *orig = p; | |
4879 | valueT val = 0; | |
4880 | int loaded = 0; | |
4881 | unsigned byte; | |
4882 | ||
4883 | /* Strip leading zeros off the bignum. */ | |
4884 | /* XXX: Is this needed? */ | |
041ff4dd | 4885 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4886 | size--; |
4887 | ||
4888 | do | |
4889 | { | |
4890 | if (loaded < 7 && size > 0) | |
4891 | { | |
4892 | val |= (*bignum << loaded); | |
4893 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4894 | size--; | |
4895 | bignum++; | |
4896 | } | |
4897 | ||
4898 | byte = val & 0x7f; | |
4899 | loaded -= 7; | |
4900 | val >>= 7; | |
4901 | ||
4902 | if (size > 0 || val) | |
4903 | byte |= 0x80; | |
4904 | ||
4905 | if (orig) | |
4906 | *p = byte; | |
4907 | p++; | |
4908 | } | |
4909 | while (byte & 0x80); | |
4910 | ||
4911 | return p - orig; | |
4912 | } | |
4913 | ||
6d4d30bb | 4914 | static int |
39e6acbd | 4915 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
4916 | { |
4917 | if (sign) | |
4918 | return output_big_sleb128 (p, bignum, size); | |
4919 | else | |
4920 | return output_big_uleb128 (p, bignum, size); | |
4921 | } | |
4922 | ||
4923 | /* Generate the appropriate fragments for a given expression to emit a | |
4924 | leb128 value. */ | |
4925 | ||
87c245cc | 4926 | static void |
39e6acbd | 4927 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
4928 | { |
4929 | operatorT op = exp->X_op; | |
b7712f8d | 4930 | unsigned int nbytes; |
252b5132 RH |
4931 | |
4932 | if (op == O_absent || op == O_illegal) | |
4933 | { | |
4934 | as_warn (_("zero assumed for missing expression")); | |
4935 | exp->X_add_number = 0; | |
4936 | op = O_constant; | |
4937 | } | |
4938 | else if (op == O_big && exp->X_add_number <= 0) | |
4939 | { | |
0e389e77 | 4940 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4941 | exp->X_add_number = 0; |
4942 | op = O_constant; | |
4943 | } | |
4944 | else if (op == O_register) | |
4945 | { | |
4946 | as_warn (_("register value used as expression")); | |
4947 | op = O_constant; | |
4948 | } | |
e5604d79 RS |
4949 | else if (op == O_constant |
4950 | && sign | |
4951 | && (exp->X_add_number < 0) != !exp->X_unsigned) | |
4952 | { | |
4953 | /* We're outputting a signed leb128 and the sign of X_add_number | |
4954 | doesn't reflect the sign of the original value. Convert EXP | |
4955 | to a correctly-extended bignum instead. */ | |
4956 | convert_to_bignum (exp); | |
4957 | op = O_big; | |
4958 | } | |
252b5132 | 4959 | |
67a659f6 RH |
4960 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
4961 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 4962 | nbytes = (unsigned int) -1; |
67a659f6 RH |
4963 | if (check_eh_frame (exp, &nbytes)) |
4964 | abort (); | |
4965 | ||
371b7465 RH |
4966 | /* Let the backend know that subsequent data may be byte aligned. */ |
4967 | #ifdef md_cons_align | |
4968 | md_cons_align (1); | |
4969 | #endif | |
4970 | ||
252b5132 RH |
4971 | if (op == O_constant) |
4972 | { | |
4973 | /* If we've got a constant, emit the thing directly right now. */ | |
4974 | ||
4975 | valueT value = exp->X_add_number; | |
4976 | int size; | |
4977 | char *p; | |
4978 | ||
4979 | size = sizeof_leb128 (value, sign); | |
4980 | p = frag_more (size); | |
4981 | output_leb128 (p, value, sign); | |
4982 | } | |
4983 | else if (op == O_big) | |
4984 | { | |
4985 | /* O_big is a different sort of constant. */ | |
4986 | ||
4987 | int size; | |
4988 | char *p; | |
4989 | ||
4990 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
4991 | p = frag_more (size); | |
4992 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
4993 | } | |
4994 | else | |
4995 | { | |
041ff4dd | 4996 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
4997 | resolve things later. */ |
4998 | ||
041ff4dd | 4999 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5000 | make_expr_symbol (exp), 0, (char *) NULL); |
5001 | } | |
5002 | } | |
5003 | ||
5004 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5005 | ||
5006 | void | |
39e6acbd | 5007 | s_leb128 (int sign) |
252b5132 RH |
5008 | { |
5009 | expressionS exp; | |
5010 | ||
00bbdfe7 BW |
5011 | #ifdef md_flush_pending_output |
5012 | md_flush_pending_output (); | |
5013 | #endif | |
5014 | ||
041ff4dd NC |
5015 | do |
5016 | { | |
5017 | expression (&exp); | |
5018 | emit_leb128_expr (&exp, sign); | |
5019 | } | |
5020 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5021 | |
5022 | input_line_pointer--; | |
5023 | demand_empty_rest_of_line (); | |
5024 | } | |
5025 | \f | |
38a57ae7 NC |
5026 | static void |
5027 | stringer_append_char (int c, int bitsize) | |
5028 | { | |
5029 | if (!target_big_endian) | |
5030 | FRAG_APPEND_1_CHAR (c); | |
5031 | ||
5032 | switch (bitsize) | |
5033 | { | |
5034 | case 64: | |
5035 | FRAG_APPEND_1_CHAR (0); | |
5036 | FRAG_APPEND_1_CHAR (0); | |
5037 | FRAG_APPEND_1_CHAR (0); | |
5038 | FRAG_APPEND_1_CHAR (0); | |
5039 | /* Fall through. */ | |
5040 | case 32: | |
5041 | FRAG_APPEND_1_CHAR (0); | |
5042 | FRAG_APPEND_1_CHAR (0); | |
5043 | /* Fall through. */ | |
5044 | case 16: | |
5045 | FRAG_APPEND_1_CHAR (0); | |
5046 | /* Fall through. */ | |
5047 | case 8: | |
5048 | break; | |
5049 | default: | |
5050 | /* Called with invalid bitsize argument. */ | |
5051 | abort (); | |
5052 | break; | |
5053 | } | |
5054 | if (target_big_endian) | |
5055 | FRAG_APPEND_1_CHAR (c); | |
5056 | } | |
5057 | ||
5058 | /* Worker to do .ascii etc statements. | |
5059 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5060 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5061 | check it. |
5062 | Checks for end-of-line. | |
5063 | BITS_APPENDZERO says how many bits are in a target char. | |
5064 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5065 | |
5066 | void | |
38a57ae7 | 5067 | stringer (int bits_appendzero) |
252b5132 | 5068 | { |
38a57ae7 NC |
5069 | const int bitsize = bits_appendzero & ~7; |
5070 | const int append_zero = bits_appendzero & 1; | |
5071 | unsigned int c; | |
252b5132 RH |
5072 | char *start; |
5073 | ||
5074 | #ifdef md_flush_pending_output | |
5075 | md_flush_pending_output (); | |
5076 | #endif | |
5077 | ||
041ff4dd NC |
5078 | /* The following awkward logic is to parse ZERO or more strings, |
5079 | comma separated. Recall a string expression includes spaces | |
5080 | before the opening '\"' and spaces after the closing '\"'. | |
5081 | We fake a leading ',' if there is (supposed to be) | |
5082 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5083 | if (is_it_end_of_statement ()) |
5084 | { | |
041ff4dd NC |
5085 | c = 0; /* Skip loop. */ |
5086 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5087 | } |
5088 | else | |
5089 | { | |
041ff4dd | 5090 | c = ','; /* Do loop. */ |
252b5132 | 5091 | } |
8ac9ba6c NC |
5092 | /* If we have been switched into the abs_section then we |
5093 | will not have an obstack onto which we can hang strings. */ | |
5094 | if (now_seg == absolute_section) | |
5095 | { | |
5096 | as_bad (_("strings must be placed into a section")); | |
5097 | c = 0; | |
5098 | ignore_rest_of_line (); | |
5099 | } | |
d6415f6c | 5100 | |
252b5132 RH |
5101 | while (c == ',' || c == '<' || c == '"') |
5102 | { | |
5103 | SKIP_WHITESPACE (); | |
5104 | switch (*input_line_pointer) | |
5105 | { | |
5106 | case '\"': | |
041ff4dd | 5107 | ++input_line_pointer; /*->1st char of string. */ |
252b5132 | 5108 | start = input_line_pointer; |
38a57ae7 | 5109 | |
252b5132 | 5110 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5111 | stringer_append_char (c, bitsize); |
5112 | ||
252b5132 | 5113 | if (append_zero) |
38a57ae7 NC |
5114 | stringer_append_char (0, bitsize); |
5115 | ||
252b5132 RH |
5116 | know (input_line_pointer[-1] == '\"'); |
5117 | ||
5118 | #ifndef NO_LISTING | |
5119 | #ifdef OBJ_ELF | |
5120 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | |
d6415f6c AM |
5121 | will emit .string with a filename in the .debug section |
5122 | after a sequence of constants. See the comment in | |
5123 | emit_expr for the sequence. emit_expr will set | |
5124 | dwarf_file_string to non-zero if this string might be a | |
5125 | source file name. */ | |
252b5132 RH |
5126 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5127 | dwarf_file_string = 0; | |
5128 | else if (dwarf_file_string) | |
5129 | { | |
5130 | c = input_line_pointer[-1]; | |
5131 | input_line_pointer[-1] = '\0'; | |
5132 | listing_source_file (start); | |
5133 | input_line_pointer[-1] = c; | |
5134 | } | |
5135 | #endif | |
5136 | #endif | |
5137 | ||
5138 | break; | |
5139 | case '<': | |
5140 | input_line_pointer++; | |
5141 | c = get_single_number (); | |
38a57ae7 | 5142 | stringer_append_char (c, bitsize); |
252b5132 | 5143 | if (*input_line_pointer != '>') |
38a57ae7 NC |
5144 | as_bad (_("expected <nn>")); |
5145 | ||
252b5132 RH |
5146 | input_line_pointer++; |
5147 | break; | |
5148 | case ',': | |
5149 | input_line_pointer++; | |
5150 | break; | |
5151 | } | |
5152 | SKIP_WHITESPACE (); | |
5153 | c = *input_line_pointer; | |
5154 | } | |
5155 | ||
5156 | demand_empty_rest_of_line (); | |
38a57ae7 | 5157 | } |
252b5132 RH |
5158 | \f |
5159 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5160 | high bits set. We'll probably also have trouble with | |
5161 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5162 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5163 | |
041ff4dd | 5164 | unsigned int |
39e6acbd | 5165 | next_char_of_string (void) |
252b5132 RH |
5166 | { |
5167 | register unsigned int c; | |
5168 | ||
5169 | c = *input_line_pointer++ & CHAR_MASK; | |
5170 | switch (c) | |
5171 | { | |
5172 | case '\"': | |
5173 | c = NOT_A_CHAR; | |
5174 | break; | |
5175 | ||
5176 | case '\n': | |
0e389e77 | 5177 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5178 | bump_line_counters (); |
5179 | break; | |
5180 | ||
5181 | #ifndef NO_STRING_ESCAPES | |
5182 | case '\\': | |
5183 | switch (c = *input_line_pointer++) | |
5184 | { | |
5185 | case 'b': | |
5186 | c = '\b'; | |
5187 | break; | |
5188 | ||
5189 | case 'f': | |
5190 | c = '\f'; | |
5191 | break; | |
5192 | ||
5193 | case 'n': | |
5194 | c = '\n'; | |
5195 | break; | |
5196 | ||
5197 | case 'r': | |
5198 | c = '\r'; | |
5199 | break; | |
5200 | ||
5201 | case 't': | |
5202 | c = '\t'; | |
5203 | break; | |
5204 | ||
5205 | case 'v': | |
5206 | c = '\013'; | |
5207 | break; | |
5208 | ||
5209 | case '\\': | |
5210 | case '"': | |
041ff4dd | 5211 | break; /* As itself. */ |
252b5132 RH |
5212 | |
5213 | case '0': | |
5214 | case '1': | |
5215 | case '2': | |
5216 | case '3': | |
5217 | case '4': | |
5218 | case '5': | |
5219 | case '6': | |
5220 | case '7': | |
5221 | case '8': | |
5222 | case '9': | |
5223 | { | |
5224 | long number; | |
5225 | int i; | |
5226 | ||
041ff4dd | 5227 | for (i = 0, number = 0; |
3882b010 | 5228 | ISDIGIT (c) && i < 3; |
041ff4dd | 5229 | c = *input_line_pointer++, i++) |
252b5132 RH |
5230 | { |
5231 | number = number * 8 + c - '0'; | |
5232 | } | |
f0e652b4 | 5233 | |
252b5132 RH |
5234 | c = number & 0xff; |
5235 | } | |
5236 | --input_line_pointer; | |
5237 | break; | |
5238 | ||
5239 | case 'x': | |
5240 | case 'X': | |
5241 | { | |
5242 | long number; | |
5243 | ||
5244 | number = 0; | |
5245 | c = *input_line_pointer++; | |
3882b010 | 5246 | while (ISXDIGIT (c)) |
252b5132 | 5247 | { |
3882b010 | 5248 | if (ISDIGIT (c)) |
252b5132 | 5249 | number = number * 16 + c - '0'; |
3882b010 | 5250 | else if (ISUPPER (c)) |
252b5132 RH |
5251 | number = number * 16 + c - 'A' + 10; |
5252 | else | |
5253 | number = number * 16 + c - 'a' + 10; | |
5254 | c = *input_line_pointer++; | |
5255 | } | |
5256 | c = number & 0xff; | |
5257 | --input_line_pointer; | |
5258 | } | |
5259 | break; | |
5260 | ||
5261 | case '\n': | |
041ff4dd | 5262 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5263 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5264 | c = '\n'; |
5265 | bump_line_counters (); | |
5266 | break; | |
5267 | ||
5268 | default: | |
5269 | ||
5270 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5271 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5272 | c = '?'; |
5273 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5274 | ||
5275 | break; | |
041ff4dd | 5276 | } |
252b5132 RH |
5277 | break; |
5278 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
5279 | ||
5280 | default: | |
5281 | break; | |
041ff4dd | 5282 | } |
252b5132 | 5283 | return (c); |
041ff4dd | 5284 | } |
252b5132 RH |
5285 | \f |
5286 | static segT | |
39e6acbd | 5287 | get_segmented_expression (register expressionS *expP) |
252b5132 RH |
5288 | { |
5289 | register segT retval; | |
5290 | ||
5291 | retval = expression (expP); | |
5292 | if (expP->X_op == O_illegal | |
5293 | || expP->X_op == O_absent | |
5294 | || expP->X_op == O_big) | |
5295 | { | |
0e389e77 | 5296 | as_bad (_("expected address expression")); |
252b5132 RH |
5297 | expP->X_op = O_constant; |
5298 | expP->X_add_number = 0; | |
5299 | retval = absolute_section; | |
5300 | } | |
5301 | return retval; | |
5302 | } | |
5303 | ||
041ff4dd | 5304 | static segT |
39e6acbd | 5305 | get_known_segmented_expression (register expressionS *expP) |
252b5132 RH |
5306 | { |
5307 | register segT retval; | |
5308 | ||
5309 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
5310 | { | |
5311 | /* There is no easy way to extract the undefined symbol from the | |
5312 | expression. */ | |
5313 | if (expP->X_add_symbol != NULL | |
5314 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5315 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5316 | S_GET_NAME (expP->X_add_symbol)); | |
5317 | else | |
5318 | as_warn (_("some symbol undefined; zero assumed")); | |
5319 | retval = absolute_section; | |
5320 | expP->X_op = O_constant; | |
5321 | expP->X_add_number = 0; | |
5322 | } | |
5323 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
5324 | return (retval); | |
041ff4dd | 5325 | } |
252b5132 | 5326 | |
041ff4dd | 5327 | char /* Return terminator. */ |
39e6acbd | 5328 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5329 | { |
5330 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5331 | *val_pointer = (long) get_absolute_expression (); | |
5332 | return (*input_line_pointer++); | |
5333 | } | |
5334 | \f | |
041ff4dd NC |
5335 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5336 | Give a warning if that happens. */ | |
5337 | ||
252b5132 | 5338 | char * |
39e6acbd | 5339 | demand_copy_C_string (int *len_pointer) |
252b5132 RH |
5340 | { |
5341 | register char *s; | |
5342 | ||
5343 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5344 | { | |
5345 | register int len; | |
5346 | ||
5347 | for (len = *len_pointer; len > 0; len--) | |
5348 | { | |
5349 | if (*s == 0) | |
5350 | { | |
5351 | s = 0; | |
5352 | len = 1; | |
5353 | *len_pointer = 0; | |
0e389e77 | 5354 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5355 | } |
5356 | } | |
5357 | } | |
f0e652b4 | 5358 | |
252b5132 RH |
5359 | return s; |
5360 | } | |
5361 | \f | |
041ff4dd NC |
5362 | /* Demand string, but return a safe (=private) copy of the string. |
5363 | Return NULL if we can't read a string here. */ | |
5364 | ||
252b5132 | 5365 | char * |
39e6acbd | 5366 | demand_copy_string (int *lenP) |
252b5132 RH |
5367 | { |
5368 | register unsigned int c; | |
5369 | register int len; | |
5370 | char *retval; | |
5371 | ||
5372 | len = 0; | |
5373 | SKIP_WHITESPACE (); | |
5374 | if (*input_line_pointer == '\"') | |
5375 | { | |
041ff4dd | 5376 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5377 | |
5378 | while (is_a_char (c = next_char_of_string ())) | |
5379 | { | |
5380 | obstack_1grow (¬es, c); | |
5381 | len++; | |
5382 | } | |
5383 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5384 | null terminated string. */ |
252b5132 RH |
5385 | obstack_1grow (¬es, '\0'); |
5386 | retval = obstack_finish (¬es); | |
5387 | } | |
5388 | else | |
5389 | { | |
c95b35a9 | 5390 | as_bad (_("missing string")); |
252b5132 RH |
5391 | retval = NULL; |
5392 | ignore_rest_of_line (); | |
5393 | } | |
5394 | *lenP = len; | |
5395 | return (retval); | |
041ff4dd | 5396 | } |
252b5132 | 5397 | \f |
041ff4dd | 5398 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5399 | |
041ff4dd | 5400 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5401 | |
041ff4dd NC |
5402 | Out: 1 if input_line_pointer->end-of-line. */ |
5403 | ||
5404 | int | |
39e6acbd | 5405 | is_it_end_of_statement (void) |
252b5132 RH |
5406 | { |
5407 | SKIP_WHITESPACE (); | |
5408 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5409 | } |
252b5132 | 5410 | |
041ff4dd | 5411 | void |
39e6acbd | 5412 | equals (char *sym_name, int reassign) |
252b5132 | 5413 | { |
252b5132 | 5414 | char *stop = NULL; |
fb25138b | 5415 | char stopc = 0; |
252b5132 RH |
5416 | |
5417 | input_line_pointer++; | |
5418 | if (*input_line_pointer == '=') | |
5419 | input_line_pointer++; | |
9497f5ac NC |
5420 | if (reassign < 0 && *input_line_pointer == '=') |
5421 | input_line_pointer++; | |
252b5132 RH |
5422 | |
5423 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5424 | input_line_pointer++; | |
5425 | ||
5426 | if (flag_mri) | |
5427 | stop = mri_comment_field (&stopc); | |
5428 | ||
9497f5ac | 5429 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5430 | |
5431 | if (flag_mri) | |
31d20a21 AM |
5432 | { |
5433 | demand_empty_rest_of_line (); | |
5434 | mri_comment_end (stop, stopc); | |
5435 | } | |
041ff4dd | 5436 | } |
252b5132 | 5437 | |
7e005732 NC |
5438 | /* .incbin -- include a file verbatim at the current location. */ |
5439 | ||
5440 | void | |
39e6acbd | 5441 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5442 | { |
5443 | FILE * binfile; | |
5444 | char * path; | |
5445 | char * filename; | |
5446 | char * binfrag; | |
5447 | long skip = 0; | |
5448 | long count = 0; | |
5449 | long bytes; | |
5450 | int len; | |
5451 | ||
5452 | #ifdef md_flush_pending_output | |
5453 | md_flush_pending_output (); | |
5454 | #endif | |
5455 | ||
5456 | SKIP_WHITESPACE (); | |
5457 | filename = demand_copy_string (& len); | |
5458 | if (filename == NULL) | |
5459 | return; | |
5460 | ||
5461 | SKIP_WHITESPACE (); | |
5462 | ||
5463 | /* Look for optional skip and count. */ | |
5464 | if (* input_line_pointer == ',') | |
5465 | { | |
5466 | ++ input_line_pointer; | |
5467 | skip = get_absolute_expression (); | |
5468 | ||
5469 | SKIP_WHITESPACE (); | |
5470 | ||
5471 | if (* input_line_pointer == ',') | |
5472 | { | |
5473 | ++ input_line_pointer; | |
5474 | ||
5475 | count = get_absolute_expression (); | |
5476 | if (count == 0) | |
5477 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5478 | ||
5479 | SKIP_WHITESPACE (); | |
5480 | } | |
5481 | } | |
5482 | ||
5483 | demand_empty_rest_of_line (); | |
5484 | ||
5485 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5486 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5487 | if (binfile == NULL) |
5488 | { | |
5489 | int i; | |
5490 | ||
5491 | path = xmalloc ((unsigned long) len + include_dir_maxlen + 5); | |
5492 | ||
5493 | for (i = 0; i < include_dir_count; i++) | |
5494 | { | |
5495 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5496 | ||
f740e790 | 5497 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5498 | if (binfile != NULL) |
5499 | break; | |
5500 | } | |
5501 | ||
5502 | if (binfile == NULL) | |
5503 | as_bad (_("file not found: %s"), filename); | |
5504 | } | |
5505 | else | |
5506 | path = xstrdup (filename); | |
5507 | ||
5508 | if (binfile) | |
5509 | { | |
f740e790 NC |
5510 | long file_len; |
5511 | ||
7e005732 NC |
5512 | register_dependency (path); |
5513 | ||
5514 | /* Compute the length of the file. */ | |
5515 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5516 | { | |
5517 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5518 | goto done; | |
5519 | } | |
f740e790 | 5520 | file_len = ftell (binfile); |
7e005732 | 5521 | |
c556cc9c | 5522 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5523 | if (count == 0) |
c556cc9c | 5524 | count = file_len - skip; |
7e005732 | 5525 | |
c556cc9c | 5526 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5527 | { |
c556cc9c | 5528 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5529 | skip, count, file_len); |
7e005732 NC |
5530 | goto done; |
5531 | } | |
5532 | ||
5533 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5534 | { | |
5535 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5536 | goto done; | |
5537 | } | |
5538 | ||
5539 | /* Allocate frag space and store file contents in it. */ | |
5540 | binfrag = frag_more (count); | |
5541 | ||
5542 | bytes = fread (binfrag, 1, count, binfile); | |
5543 | if (bytes < count) | |
5544 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5545 | path, bytes, count); | |
5546 | } | |
5547 | done: | |
5548 | if (binfile != NULL) | |
5549 | fclose (binfile); | |
5550 | if (path) | |
5551 | free (path); | |
5552 | } | |
5553 | ||
041ff4dd | 5554 | /* .include -- include a file at this point. */ |
252b5132 | 5555 | |
041ff4dd | 5556 | void |
39e6acbd | 5557 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5558 | { |
252b5132 RH |
5559 | char *filename; |
5560 | int i; | |
5561 | FILE *try; | |
5562 | char *path; | |
5563 | ||
041ff4dd | 5564 | if (!flag_m68k_mri) |
252b5132 RH |
5565 | { |
5566 | filename = demand_copy_string (&i); | |
5567 | if (filename == NULL) | |
5568 | { | |
5569 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5570 | called ignore_rest_of_line. */ |
252b5132 RH |
5571 | return; |
5572 | } | |
5573 | } | |
5574 | else | |
5575 | { | |
5576 | SKIP_WHITESPACE (); | |
5577 | i = 0; | |
041ff4dd | 5578 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5579 | && *input_line_pointer != ' ' |
5580 | && *input_line_pointer != '\t') | |
5581 | { | |
5582 | obstack_1grow (¬es, *input_line_pointer); | |
5583 | ++input_line_pointer; | |
5584 | ++i; | |
5585 | } | |
f0e652b4 | 5586 | |
252b5132 RH |
5587 | obstack_1grow (¬es, '\0'); |
5588 | filename = obstack_finish (¬es); | |
041ff4dd | 5589 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5590 | ++input_line_pointer; |
5591 | } | |
f0e652b4 | 5592 | |
252b5132 RH |
5593 | demand_empty_rest_of_line (); |
5594 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5595 | |
252b5132 RH |
5596 | for (i = 0; i < include_dir_count; i++) |
5597 | { | |
5598 | strcpy (path, include_dirs[i]); | |
5599 | strcat (path, "/"); | |
5600 | strcat (path, filename); | |
f740e790 | 5601 | if (0 != (try = fopen (path, FOPEN_RT))) |
252b5132 RH |
5602 | { |
5603 | fclose (try); | |
5604 | goto gotit; | |
5605 | } | |
5606 | } | |
f0e652b4 | 5607 | |
252b5132 RH |
5608 | free (path); |
5609 | path = filename; | |
5610 | gotit: | |
041ff4dd | 5611 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5612 | register_dependency (path); |
9f10757c | 5613 | input_scrub_insert_file (path); |
041ff4dd | 5614 | } |
252b5132 | 5615 | |
041ff4dd | 5616 | void |
39e6acbd | 5617 | add_include_dir (char *path) |
252b5132 RH |
5618 | { |
5619 | int i; | |
5620 | ||
5621 | if (include_dir_count == 0) | |
5622 | { | |
5623 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5624 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5625 | include_dir_count = 2; |
5626 | } | |
5627 | else | |
5628 | { | |
5629 | include_dir_count++; | |
041ff4dd NC |
5630 | include_dirs = |
5631 | (char **) realloc (include_dirs, | |
5632 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5633 | } |
5634 | ||
041ff4dd | 5635 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5636 | |
5637 | i = strlen (path); | |
5638 | if (i > include_dir_maxlen) | |
5639 | include_dir_maxlen = i; | |
041ff4dd | 5640 | } |
252b5132 RH |
5641 | \f |
5642 | /* Output debugging information to denote the source file. */ | |
5643 | ||
5644 | static void | |
39e6acbd | 5645 | generate_file_debug (void) |
252b5132 RH |
5646 | { |
5647 | if (debug_type == DEBUG_STABS) | |
5648 | stabs_generate_asm_file (); | |
5649 | } | |
5650 | ||
5651 | /* Output line number debugging information for the current source line. */ | |
5652 | ||
5653 | void | |
39e6acbd | 5654 | generate_lineno_debug (void) |
252b5132 | 5655 | { |
252b5132 RH |
5656 | switch (debug_type) |
5657 | { | |
5658 | case DEBUG_UNSPECIFIED: | |
5659 | case DEBUG_NONE: | |
4dc7ead9 | 5660 | case DEBUG_DWARF: |
252b5132 RH |
5661 | break; |
5662 | case DEBUG_STABS: | |
5663 | stabs_generate_asm_lineno (); | |
5664 | break; | |
5665 | case DEBUG_ECOFF: | |
5666 | ecoff_generate_asm_lineno (); | |
5667 | break; | |
252b5132 | 5668 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5669 | /* ??? We could here indicate to dwarf2dbg.c that something |
5670 | has changed. However, since there is additional backend | |
5671 | support that is required (calling dwarf2_emit_insn), we | |
5672 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5673 | break; |
5674 | } | |
5675 | } | |
5676 | ||
5677 | /* Output debugging information to mark a function entry point or end point. | |
5678 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5679 | ||
5680 | void | |
39e6acbd | 5681 | s_func (int end_p) |
252b5132 RH |
5682 | { |
5683 | do_s_func (end_p, NULL); | |
5684 | } | |
5685 | ||
5686 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5687 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5688 | ||
87c245cc | 5689 | static void |
39e6acbd | 5690 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5691 | { |
5692 | /* Record the current function so that we can issue an error message for | |
5693 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5694 | arguments. */ | |
5695 | static char *current_name; | |
5696 | static char *current_label; | |
5697 | ||
5698 | if (end_p) | |
5699 | { | |
5700 | if (current_name == NULL) | |
5701 | { | |
5702 | as_bad (_("missing .func")); | |
5703 | ignore_rest_of_line (); | |
5704 | return; | |
5705 | } | |
5706 | ||
5707 | if (debug_type == DEBUG_STABS) | |
5708 | stabs_generate_asm_endfunc (current_name, current_label); | |
5709 | ||
5710 | current_name = current_label = NULL; | |
5711 | } | |
5712 | else /* ! end_p */ | |
5713 | { | |
041ff4dd NC |
5714 | char *name, *label; |
5715 | char delim1, delim2; | |
252b5132 RH |
5716 | |
5717 | if (current_name != NULL) | |
5718 | { | |
5719 | as_bad (_(".endfunc missing for previous .func")); | |
5720 | ignore_rest_of_line (); | |
5721 | return; | |
5722 | } | |
5723 | ||
5724 | name = input_line_pointer; | |
5725 | delim1 = get_symbol_end (); | |
5726 | name = xstrdup (name); | |
5727 | *input_line_pointer = delim1; | |
5728 | SKIP_WHITESPACE (); | |
5729 | if (*input_line_pointer != ',') | |
5730 | { | |
5731 | if (default_prefix) | |
05f4ab67 AM |
5732 | { |
5733 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
5734 | as_fatal ("%s", xstrerror (errno)); | |
5735 | } | |
252b5132 RH |
5736 | else |
5737 | { | |
7be1c489 | 5738 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
5739 | /* Missing entry point, use function's name with the leading |
5740 | char prepended. */ | |
5741 | if (leading_char) | |
05f4ab67 AM |
5742 | { |
5743 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
5744 | as_fatal ("%s", xstrerror (errno)); | |
5745 | } | |
252b5132 RH |
5746 | else |
5747 | label = name; | |
5748 | } | |
5749 | } | |
5750 | else | |
5751 | { | |
5752 | ++input_line_pointer; | |
5753 | SKIP_WHITESPACE (); | |
5754 | label = input_line_pointer; | |
5755 | delim2 = get_symbol_end (); | |
5756 | label = xstrdup (label); | |
5757 | *input_line_pointer = delim2; | |
5758 | } | |
5759 | ||
5760 | if (debug_type == DEBUG_STABS) | |
5761 | stabs_generate_asm_func (name, label); | |
5762 | ||
5763 | current_name = name; | |
5764 | current_label = label; | |
5765 | } | |
5766 | ||
5767 | demand_empty_rest_of_line (); | |
5768 | } | |
5769 | \f | |
041ff4dd | 5770 | void |
39e6acbd | 5771 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5772 | { |
40a4d956 | 5773 | ignore_rest_of_line (); |
252b5132 RH |
5774 | } |
5775 | ||
252b5132 | 5776 | void |
39e6acbd | 5777 | read_print_statistics (FILE *file) |
252b5132 RH |
5778 | { |
5779 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5780 | } | |
5781 | ||
041ff4dd NC |
5782 | /* Inserts the given line into the input stream. |
5783 | ||
9f10757c TW |
5784 | This call avoids macro/conditionals nesting checking, since the contents of |
5785 | the line are assumed to replace the contents of a line already scanned. | |
5786 | ||
47eebc20 | 5787 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
5788 | called by md_start_line_hook(). The given line is assumed to already be |
5789 | properly scrubbed. */ | |
5790 | ||
5791 | void | |
39e6acbd | 5792 | input_scrub_insert_line (const char *line) |
9f10757c TW |
5793 | { |
5794 | sb newline; | |
5795 | sb_new (&newline); | |
5796 | sb_add_string (&newline, line); | |
5797 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5798 | sb_kill (&newline); | |
5799 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5800 | } | |
5801 | ||
5802 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5803 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5804 | |
5805 | void | |
39e6acbd | 5806 | input_scrub_insert_file (char *path) |
9f10757c TW |
5807 | { |
5808 | input_scrub_include_file (path, input_line_pointer); | |
5809 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5810 | } | |
40a4d956 JB |
5811 | |
5812 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
5813 | ||
5814 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
5815 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
5816 | #endif | |
5817 | ||
5818 | static char * | |
7592cfd7 NC |
5819 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
5820 | int in_macro) | |
40a4d956 JB |
5821 | { |
5822 | char inquote = '\0'; | |
5823 | int inescape = 0; | |
5824 | ||
5825 | while (!is_end_of_line[(unsigned char) *s] | |
5826 | || (inquote && !ISCNTRL (*s)) | |
5827 | || (inquote == '\'' && flag_mri) | |
5828 | #ifdef TC_EOL_IN_INSN | |
5829 | || (insn && TC_EOL_IN_INSN (s)) | |
5830 | #endif | |
7592cfd7 NC |
5831 | /* PR 6926: When we are parsing the body of a macro the sequence |
5832 | \@ is special - it refers to the invocation count. If the @ | |
5833 | character happens to be registered as a line-separator character | |
5834 | by the target, then the is_end_of_line[] test above will have | |
5835 | returned true, but we need to ignore the line separating | |
5836 | semantics in this particular case. */ | |
5837 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
5838 | ) |
5839 | { | |
5840 | if (mri_string && *s == '\'') | |
5841 | inquote ^= *s; | |
5842 | else if (inescape) | |
5843 | inescape = 0; | |
5844 | else if (*s == '\\') | |
5845 | inescape = 1; | |
5846 | else if (!inquote | |
5847 | ? *s == '"' | |
5848 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
5849 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
5850 | #endif | |
5851 | : *s == inquote) | |
5852 | inquote ^= *s; | |
5853 | ++s; | |
5854 | } | |
5855 | if (inquote) | |
5856 | as_warn (_("missing closing `%c'"), inquote); | |
5857 | if (inescape) | |
5858 | as_warn (_("stray `\\'")); | |
5859 | return s; | |
5860 | } | |
5861 | ||
5862 | char * | |
5863 | find_end_of_line (char *s, int mri_string) | |
5864 | { | |
7592cfd7 | 5865 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 5866 | } |