Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
f7e42eb4 | 2 | Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
3d540e93 NC |
3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
4 | 2010 Free Software Foundation, Inc. | |
252b5132 | 5 | |
ec2655a6 | 6 | This file is part of GAS, the GNU Assembler. |
252b5132 | 7 | |
ec2655a6 NC |
8 | GAS is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3, or (at your option) | |
11 | any later version. | |
252b5132 | 12 | |
ec2655a6 NC |
13 | GAS is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
252b5132 | 17 | |
ec2655a6 NC |
18 | You should have received a copy of the GNU General Public License |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
21 | 02110-1301, USA. */ | |
252b5132 | 22 | |
59c871b4 | 23 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
041ff4dd NC |
24 | But then, GNU isn't spozed to run on your machine anyway. |
25 | (RMS is so shortsighted sometimes.) */ | |
041ff4dd | 26 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 27 | |
252b5132 | 28 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 29 | grow when we do 4361 style flonums. */ |
252b5132 RH |
30 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
31 | ||
47eebc20 | 32 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
33 | Another group of these functions is in the expr.c module. */ |
34 | ||
252b5132 | 35 | #include "as.h" |
3882b010 | 36 | #include "safe-ctype.h" |
252b5132 RH |
37 | #include "subsegs.h" |
38 | #include "sb.h" | |
39 | #include "macro.h" | |
40 | #include "obstack.h" | |
252b5132 | 41 | #include "ecoff.h" |
54cfded0 | 42 | #include "dw2gencfi.h" |
252b5132 RH |
43 | |
44 | #ifndef TC_START_LABEL | |
5e8c8f8f | 45 | #define TC_START_LABEL(x,y,z) (x == ':') |
252b5132 RH |
46 | #endif |
47 | ||
8684e216 HPN |
48 | /* Set by the object-format or the target. */ |
49 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 50 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 51 | do \ |
d6415f6c AM |
52 | { \ |
53 | if ((SIZE) >= 8) \ | |
54 | (P2VAR) = 3; \ | |
55 | else if ((SIZE) >= 4) \ | |
56 | (P2VAR) = 2; \ | |
57 | else if ((SIZE) >= 2) \ | |
58 | (P2VAR) = 1; \ | |
59 | else \ | |
60 | (P2VAR) = 0; \ | |
041ff4dd NC |
61 | } \ |
62 | while (0) | |
8684e216 HPN |
63 | #endif |
64 | ||
041ff4dd | 65 | char *input_line_pointer; /*->next char of source file to parse. */ |
252b5132 RH |
66 | |
67 | #if BITS_PER_CHAR != 8 | |
68 | /* The following table is indexed by[(char)] and will break if | |
69 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
70 | die horribly; | |
71 | #endif | |
72 | ||
73 | #ifndef LEX_AT | |
252b5132 RH |
74 | #define LEX_AT 0 |
75 | #endif | |
76 | ||
77 | #ifndef LEX_BR | |
78 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
79 | #define LEX_BR 0 | |
80 | #endif | |
81 | ||
82 | #ifndef LEX_PCT | |
83 | /* The Delta 68k assembler permits % inside label names. */ | |
84 | #define LEX_PCT 0 | |
85 | #endif | |
86 | ||
87 | #ifndef LEX_QM | |
88 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
89 | #define LEX_QM 0 | |
90 | #endif | |
91 | ||
58b5739a | 92 | #ifndef LEX_HASH |
800eeca4 JW |
93 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
94 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
95 | #define LEX_HASH 0 |
96 | #endif | |
97 | ||
252b5132 | 98 | #ifndef LEX_DOLLAR |
252b5132 RH |
99 | #define LEX_DOLLAR 3 |
100 | #endif | |
101 | ||
102 | #ifndef LEX_TILDE | |
103 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
104 | #define LEX_TILDE 0 | |
105 | #endif | |
106 | ||
041ff4dd | 107 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 108 | char lex_type[256] = { |
252b5132 RH |
109 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
110 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 111 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
112 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
113 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
114 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
115 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 116 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
117 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
118 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
124 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
125 | }; | |
126 | ||
041ff4dd | 127 | /* In: a character. |
d67ffd56 L |
128 | Out: 1 if this character ends a line. |
129 | 2 if this character is a line separator. */ | |
ef99799a | 130 | char is_end_of_line[256] = { |
252b5132 | 131 | #ifdef CR_EOL |
b75c0c92 | 132 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 133 | #else |
b75c0c92 | 134 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 135 | #endif |
b75c0c92 AM |
136 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
137 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
150 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 151 | }; |
252b5132 | 152 | |
a8a3b3b2 | 153 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
154 | char original_case_string[128]; |
155 | #endif | |
156 | ||
041ff4dd | 157 | /* Functions private to this file. */ |
252b5132 | 158 | |
041ff4dd NC |
159 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
160 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 161 | |
041ff4dd NC |
162 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
163 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
164 | internals manual. */ | |
252b5132 RH |
165 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
166 | ||
041ff4dd | 167 | /* Variables for handling include file directory table. */ |
252b5132 | 168 | |
041ff4dd NC |
169 | /* Table of pointers to directories to search for .include's. */ |
170 | char **include_dirs; | |
171 | ||
172 | /* How many are in the table. */ | |
173 | int include_dir_count; | |
174 | ||
175 | /* Length of longest in table. */ | |
176 | int include_dir_maxlen = 1; | |
252b5132 RH |
177 | |
178 | #ifndef WORKING_DOT_WORD | |
179 | struct broken_word *broken_words; | |
180 | int new_broken_words; | |
181 | #endif | |
182 | ||
183 | /* The current offset into the absolute section. We don't try to | |
184 | build frags in the absolute section, since no data can be stored | |
185 | there. We just keep track of the current offset. */ | |
186 | addressT abs_section_offset; | |
187 | ||
188 | /* If this line had an MRI style label, it is stored in this variable. | |
189 | This is used by some of the MRI pseudo-ops. */ | |
190 | symbolS *line_label; | |
191 | ||
192 | /* This global variable is used to support MRI common sections. We | |
193 | translate such sections into a common symbol. This variable is | |
194 | non-NULL when we are in an MRI common section. */ | |
195 | symbolS *mri_common_symbol; | |
196 | ||
197 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
198 | need to align to an even byte boundary unless the next pseudo-op is | |
199 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
200 | may be needed. */ | |
201 | static int mri_pending_align; | |
202 | ||
203 | #ifndef NO_LISTING | |
204 | #ifdef OBJ_ELF | |
205 | /* This variable is set to be non-zero if the next string we see might | |
206 | be the name of the source file in DWARF debugging information. See | |
207 | the comment in emit_expr for the format we look for. */ | |
208 | static int dwarf_file_string; | |
209 | #endif | |
210 | #endif | |
211 | ||
87c245cc | 212 | static void do_s_func (int end_p, const char *default_prefix); |
39e6acbd KH |
213 | static void do_align (int, char *, int, int); |
214 | static void s_align (int, int); | |
caa32fe5 | 215 | static void s_altmacro (int); |
057f53c1 | 216 | static void s_bad_end (int); |
104d59d1 JM |
217 | #ifdef OBJ_ELF |
218 | static void s_gnu_attribute (int); | |
219 | #endif | |
05e9452c | 220 | static void s_reloc (int); |
39e6acbd | 221 | static int hex_float (int, char *); |
39e6acbd KH |
222 | static segT get_known_segmented_expression (expressionS * expP); |
223 | static void pobegin (void); | |
7592cfd7 | 224 | static int get_non_macro_line_sb (sb *); |
39e6acbd | 225 | static void generate_file_debug (void); |
7592cfd7 | 226 | static char *_find_end_of_line (char *, int, int, int); |
252b5132 | 227 | \f |
252b5132 | 228 | void |
39e6acbd | 229 | read_begin (void) |
252b5132 RH |
230 | { |
231 | const char *p; | |
232 | ||
233 | pobegin (); | |
234 | obj_read_begin_hook (); | |
235 | ||
236 | /* Something close -- but not too close -- to a multiple of 1024. | |
237 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
238 | obstack_begin (¬es, chunksize); | |
239 | obstack_begin (&cond_obstack, chunksize); | |
240 | ||
041ff4dd | 241 | /* Use machine dependent syntax. */ |
252b5132 | 242 | for (p = line_separator_chars; *p; p++) |
d67ffd56 | 243 | is_end_of_line[(unsigned char) *p] = 2; |
041ff4dd | 244 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
245 | |
246 | if (flag_mri) | |
247 | lex_type['?'] = 3; | |
248 | } | |
249 | \f | |
cc1bc22a | 250 | #ifndef TC_ADDRESS_BYTES |
cc1bc22a AM |
251 | #define TC_ADDRESS_BYTES address_bytes |
252 | ||
253 | static inline int | |
254 | address_bytes (void) | |
255 | { | |
256 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
257 | contain an address. */ | |
258 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
259 | n |= n >> 1; | |
260 | n |= n >> 2; | |
261 | n += 1; | |
262 | return n; | |
263 | } | |
264 | #endif | |
cc1bc22a | 265 | |
041ff4dd | 266 | /* Set up pseudo-op tables. */ |
252b5132 RH |
267 | |
268 | static struct hash_control *po_hash; | |
269 | ||
ef99799a | 270 | static const pseudo_typeS potable[] = { |
252b5132 RH |
271 | {"abort", s_abort, 0}, |
272 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 273 | {"altmacro", s_altmacro, 1}, |
38a57ae7 NC |
274 | {"ascii", stringer, 8+0}, |
275 | {"asciz", stringer, 8+1}, | |
252b5132 RH |
276 | {"balign", s_align_bytes, 0}, |
277 | {"balignw", s_align_bytes, -2}, | |
278 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 279 | /* block */ |
252b5132 RH |
280 | {"byte", cons, 1}, |
281 | {"comm", s_comm, 0}, | |
282 | {"common", s_mri_common, 0}, | |
283 | {"common.s", s_mri_common, 1}, | |
284 | {"data", s_data, 0}, | |
285 | {"dc", cons, 2}, | |
cc1bc22a AM |
286 | #ifdef TC_ADDRESS_BYTES |
287 | {"dc.a", cons, 0}, | |
288 | #endif | |
252b5132 RH |
289 | {"dc.b", cons, 1}, |
290 | {"dc.d", float_cons, 'd'}, | |
291 | {"dc.l", cons, 4}, | |
292 | {"dc.s", float_cons, 'f'}, | |
293 | {"dc.w", cons, 2}, | |
294 | {"dc.x", float_cons, 'x'}, | |
295 | {"dcb", s_space, 2}, | |
296 | {"dcb.b", s_space, 1}, | |
297 | {"dcb.d", s_float_space, 'd'}, | |
298 | {"dcb.l", s_space, 4}, | |
299 | {"dcb.s", s_float_space, 'f'}, | |
300 | {"dcb.w", s_space, 2}, | |
301 | {"dcb.x", s_float_space, 'x'}, | |
302 | {"ds", s_space, 2}, | |
303 | {"ds.b", s_space, 1}, | |
304 | {"ds.d", s_space, 8}, | |
305 | {"ds.l", s_space, 4}, | |
306 | {"ds.p", s_space, 12}, | |
307 | {"ds.s", s_space, 4}, | |
308 | {"ds.w", s_space, 2}, | |
309 | {"ds.x", s_space, 12}, | |
310 | {"debug", s_ignore, 0}, | |
311 | #ifdef S_SET_DESC | |
312 | {"desc", s_desc, 0}, | |
313 | #endif | |
041ff4dd | 314 | /* dim */ |
252b5132 | 315 | {"double", float_cons, 'd'}, |
041ff4dd NC |
316 | /* dsect */ |
317 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
318 | {"else", s_else, 0}, |
319 | {"elsec", s_else, 0}, | |
3fd9f047 | 320 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
321 | {"end", s_end, 0}, |
322 | {"endc", s_endif, 0}, | |
323 | {"endfunc", s_func, 1}, | |
324 | {"endif", s_endif, 0}, | |
057f53c1 JB |
325 | {"endm", s_bad_end, 0}, |
326 | {"endr", s_bad_end, 1}, | |
041ff4dd | 327 | /* endef */ |
252b5132 RH |
328 | {"equ", s_set, 0}, |
329 | {"equiv", s_set, 1}, | |
9497f5ac | 330 | {"eqv", s_set, -1}, |
252b5132 | 331 | {"err", s_err, 0}, |
d190d046 | 332 | {"error", s_errwarn, 1}, |
252b5132 | 333 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
334 | /* extend */ |
335 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 | 336 | {"appfile", s_app_file, 1}, |
93e914b2 | 337 | {"appline", s_app_line, 1}, |
252b5132 RH |
338 | {"fail", s_fail, 0}, |
339 | {"file", s_app_file, 0}, | |
340 | {"fill", s_fill, 0}, | |
341 | {"float", float_cons, 'f'}, | |
342 | {"format", s_ignore, 0}, | |
343 | {"func", s_func, 0}, | |
344 | {"global", s_globl, 0}, | |
345 | {"globl", s_globl, 0}, | |
104d59d1 JM |
346 | #ifdef OBJ_ELF |
347 | {"gnu_attribute", s_gnu_attribute, 0}, | |
348 | #endif | |
252b5132 RH |
349 | {"hword", cons, 2}, |
350 | {"if", s_if, (int) O_ne}, | |
26aca5f6 | 351 | {"ifb", s_ifb, 1}, |
252b5132 RH |
352 | {"ifc", s_ifc, 0}, |
353 | {"ifdef", s_ifdef, 0}, | |
354 | {"ifeq", s_if, (int) O_eq}, | |
355 | {"ifeqs", s_ifeqs, 0}, | |
356 | {"ifge", s_if, (int) O_ge}, | |
357 | {"ifgt", s_if, (int) O_gt}, | |
358 | {"ifle", s_if, (int) O_le}, | |
359 | {"iflt", s_if, (int) O_lt}, | |
26aca5f6 | 360 | {"ifnb", s_ifb, 0}, |
252b5132 RH |
361 | {"ifnc", s_ifc, 1}, |
362 | {"ifndef", s_ifdef, 1}, | |
363 | {"ifne", s_if, (int) O_ne}, | |
364 | {"ifnes", s_ifeqs, 1}, | |
365 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 366 | {"incbin", s_incbin, 0}, |
252b5132 RH |
367 | {"include", s_include, 0}, |
368 | {"int", cons, 4}, | |
369 | {"irp", s_irp, 0}, | |
370 | {"irep", s_irp, 0}, | |
371 | {"irpc", s_irp, 1}, | |
372 | {"irepc", s_irp, 1}, | |
373 | {"lcomm", s_lcomm, 0}, | |
c2069bb2 | 374 | {"lflags", s_ignore, 0}, /* Listing flags. */ |
93e914b2 | 375 | {"linefile", s_app_line, 0}, |
252b5132 | 376 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 377 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
378 | {"llen", listing_psize, 1}, |
379 | {"long", cons, 4}, | |
380 | {"lsym", s_lsym, 0}, | |
381 | {"macro", s_macro, 0}, | |
382 | {"mexit", s_mexit, 0}, | |
383 | {"mri", s_mri, 0}, | |
384 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
385 | {"name", s_ignore, 0}, | |
caa32fe5 | 386 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 387 | {"noformat", s_ignore, 0}, |
041ff4dd | 388 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
389 | {"nopage", listing_nopage, 0}, |
390 | {"octa", cons, 16}, | |
391 | {"offset", s_struct, 0}, | |
392 | {"org", s_org, 0}, | |
393 | {"p2align", s_align_ptwo, 0}, | |
394 | {"p2alignw", s_align_ptwo, -2}, | |
395 | {"p2alignl", s_align_ptwo, -4}, | |
396 | {"page", listing_eject, 0}, | |
397 | {"plen", listing_psize, 0}, | |
398 | {"print", s_print, 0}, | |
041ff4dd | 399 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
400 | {"purgem", s_purgem, 0}, |
401 | {"quad", cons, 8}, | |
05e9452c | 402 | {"reloc", s_reloc, 0}, |
252b5132 RH |
403 | {"rep", s_rept, 0}, |
404 | {"rept", s_rept, 0}, | |
405 | {"rva", s_rva, 4}, | |
041ff4dd NC |
406 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
407 | /* scl */ | |
408 | /* sect */ | |
252b5132 RH |
409 | {"set", s_set, 0}, |
410 | {"short", cons, 2}, | |
411 | {"single", float_cons, 'f'}, | |
041ff4dd | 412 | /* size */ |
252b5132 RH |
413 | {"space", s_space, 0}, |
414 | {"skip", s_space, 0}, | |
415 | {"sleb128", s_leb128, 1}, | |
416 | {"spc", s_ignore, 0}, | |
417 | {"stabd", s_stab, 'd'}, | |
418 | {"stabn", s_stab, 'n'}, | |
419 | {"stabs", s_stab, 's'}, | |
38a57ae7 NC |
420 | {"string", stringer, 8+1}, |
421 | {"string8", stringer, 8+1}, | |
422 | {"string16", stringer, 16+1}, | |
423 | {"string32", stringer, 32+1}, | |
424 | {"string64", stringer, 64+1}, | |
252b5132 | 425 | {"struct", s_struct, 0}, |
041ff4dd | 426 | /* tag */ |
252b5132 RH |
427 | {"text", s_text, 0}, |
428 | ||
429 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
430 | won't be able to use it for a while -- probably a year or more. | |
431 | But once this has been released, check with gcc maintainers | |
432 | before deleting it or even changing the spelling. */ | |
433 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
434 | /* If we're folding case -- done for some targets, not necessarily | |
435 | all -- the above string in an input file will be converted to | |
436 | this one. Match it either way... */ | |
437 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
438 | ||
041ff4dd | 439 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 440 | {"ttl", listing_title, 0}, |
041ff4dd | 441 | /* type */ |
252b5132 | 442 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
443 | /* use */ |
444 | /* val */ | |
252b5132 RH |
445 | {"xcom", s_comm, 0}, |
446 | {"xdef", s_globl, 0}, | |
447 | {"xref", s_ignore, 0}, | |
448 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 449 | {"warning", s_errwarn, 0}, |
06e77878 | 450 | {"weakref", s_weakref, 0}, |
252b5132 RH |
451 | {"word", cons, 2}, |
452 | {"zero", s_space, 0}, | |
041ff4dd | 453 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
454 | }; |
455 | ||
87c245cc BE |
456 | static offsetT |
457 | get_absolute_expr (expressionS *exp) | |
458 | { | |
9497f5ac | 459 | expression_and_evaluate (exp); |
87c245cc BE |
460 | if (exp->X_op != O_constant) |
461 | { | |
462 | if (exp->X_op != O_absent) | |
463 | as_bad (_("bad or irreducible absolute expression")); | |
464 | exp->X_add_number = 0; | |
465 | } | |
466 | return exp->X_add_number; | |
467 | } | |
468 | ||
469 | offsetT | |
470 | get_absolute_expression (void) | |
471 | { | |
472 | expressionS exp; | |
473 | ||
474 | return get_absolute_expr (&exp); | |
475 | } | |
476 | ||
252b5132 RH |
477 | static int pop_override_ok = 0; |
478 | static const char *pop_table_name; | |
479 | ||
480 | void | |
39e6acbd | 481 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
482 | { |
483 | const char *errtxt; | |
484 | const pseudo_typeS *pop; | |
485 | for (pop = table; pop->poc_name; pop++) | |
486 | { | |
487 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
488 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
489 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
490 | errtxt); | |
491 | } | |
492 | } | |
493 | ||
494 | #ifndef md_pop_insert | |
495 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
496 | #endif | |
497 | ||
498 | #ifndef obj_pop_insert | |
499 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
500 | #endif | |
501 | ||
54cfded0 AM |
502 | #ifndef cfi_pop_insert |
503 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
504 | #endif | |
505 | ||
041ff4dd | 506 | static void |
39e6acbd | 507 | pobegin (void) |
252b5132 RH |
508 | { |
509 | po_hash = hash_new (); | |
510 | ||
041ff4dd | 511 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
512 | pop_table_name = "md"; |
513 | md_pop_insert (); | |
514 | ||
041ff4dd | 515 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
516 | pop_table_name = "obj"; |
517 | pop_override_ok = 1; | |
518 | obj_pop_insert (); | |
519 | ||
041ff4dd | 520 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
521 | pop_table_name = "standard"; |
522 | pop_insert (potable); | |
d6415f6c | 523 | |
54cfded0 AM |
524 | #ifdef TARGET_USE_CFIPOP |
525 | pop_table_name = "cfi"; | |
526 | pop_override_ok = 1; | |
527 | cfi_pop_insert (); | |
528 | #endif | |
252b5132 RH |
529 | } |
530 | \f | |
531 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
532 | if (ignore_input ()) \ | |
533 | { \ | |
7592cfd7 | 534 | char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \ |
40a4d956 JB |
535 | input_line_pointer = (input_line_pointer <= buffer_limit \ |
536 | && eol >= buffer_limit) \ | |
537 | ? buffer_limit \ | |
538 | : eol + 1; \ | |
252b5132 RH |
539 | continue; \ |
540 | } | |
541 | ||
252b5132 RH |
542 | /* This function is used when scrubbing the characters between #APP |
543 | and #NO_APP. */ | |
544 | ||
545 | static char *scrub_string; | |
546 | static char *scrub_string_end; | |
547 | ||
548 | static int | |
39e6acbd | 549 | scrub_from_string (char *buf, int buflen) |
252b5132 | 550 | { |
2b47531b ILT |
551 | int copy; |
552 | ||
553 | copy = scrub_string_end - scrub_string; | |
554 | if (copy > buflen) | |
555 | copy = buflen; | |
556 | memcpy (buf, scrub_string, copy); | |
557 | scrub_string += copy; | |
558 | return copy; | |
252b5132 RH |
559 | } |
560 | ||
5e75c3ab JB |
561 | /* Helper function of read_a_source_file, which tries to expand a macro. */ |
562 | static int | |
563 | try_macro (char term, const char *line) | |
564 | { | |
565 | sb out; | |
566 | const char *err; | |
567 | macro_entry *macro; | |
568 | ||
569 | if (check_macro (line, &out, &err, ¯o)) | |
570 | { | |
571 | if (err != NULL) | |
572 | as_bad ("%s", err); | |
573 | *input_line_pointer++ = term; | |
574 | input_scrub_include_sb (&out, | |
575 | input_line_pointer, 1); | |
576 | sb_kill (&out); | |
577 | buffer_limit = | |
578 | input_scrub_next_buffer (&input_line_pointer); | |
579 | #ifdef md_macro_info | |
580 | md_macro_info (macro); | |
581 | #endif | |
582 | return 1; | |
583 | } | |
584 | return 0; | |
585 | } | |
586 | ||
041ff4dd NC |
587 | /* We read the file, putting things into a web that represents what we |
588 | have been reading. */ | |
589 | void | |
39e6acbd | 590 | read_a_source_file (char *name) |
252b5132 | 591 | { |
91d6fa6a NC |
592 | char c; |
593 | char *s; /* String of symbol, '\0' appended. */ | |
594 | int temp; | |
252b5132 RH |
595 | pseudo_typeS *pop; |
596 | ||
4c400d5e AM |
597 | #ifdef WARN_COMMENTS |
598 | found_comment = 0; | |
599 | #endif | |
600 | ||
252b5132 RH |
601 | buffer = input_scrub_new_file (name); |
602 | ||
603 | listing_file (name); | |
604 | listing_newline (NULL); | |
605 | register_dependency (name); | |
606 | ||
607 | /* Generate debugging information before we've read anything in to denote | |
608 | this file as the "main" source file and not a subordinate one | |
609 | (e.g. N_SO vs N_SOL in stabs). */ | |
610 | generate_file_debug (); | |
611 | ||
612 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd | 613 | { /* We have another line to parse. */ |
5e75c3ab JB |
614 | #ifndef NO_LISTING |
615 | /* In order to avoid listing macro expansion lines with labels | |
616 | multiple times, keep track of which line was last issued. */ | |
617 | static char *last_eol; | |
618 | ||
619 | last_eol = NULL; | |
620 | #endif | |
252b5132 RH |
621 | while (input_line_pointer < buffer_limit) |
622 | { | |
f19df8f7 | 623 | bfd_boolean was_new_line; |
041ff4dd | 624 | /* We have more of this buffer to parse. */ |
252b5132 | 625 | |
041ff4dd NC |
626 | /* We now have input_line_pointer->1st char of next line. |
627 | If input_line_pointer [-1] == '\n' then we just | |
628 | scanned another line: so bump line counters. */ | |
f19df8f7 AM |
629 | was_new_line = is_end_of_line[(unsigned char) input_line_pointer[-1]]; |
630 | if (was_new_line) | |
252b5132 RH |
631 | { |
632 | #ifdef md_start_line_hook | |
633 | md_start_line_hook (); | |
634 | #endif | |
252b5132 RH |
635 | if (input_line_pointer[-1] == '\n') |
636 | bump_line_counters (); | |
f19df8f7 | 637 | } |
252b5132 | 638 | |
f19df8f7 AM |
639 | #ifndef NO_LISTING |
640 | /* If listing is on, and we are expanding a macro, then give | |
641 | the listing code the contents of the expanded line. */ | |
642 | if (listing) | |
643 | { | |
644 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
645 | { | |
646 | /* Find the end of the current expanded macro line. */ | |
647 | s = find_end_of_line (input_line_pointer, flag_m68k_mri); | |
648 | ||
649 | if (s != last_eol) | |
650 | { | |
651 | char *copy; | |
652 | int len; | |
653 | ||
654 | last_eol = s; | |
655 | /* Copy it for safe keeping. Also give an indication of | |
656 | how much macro nesting is involved at this point. */ | |
657 | len = s - input_line_pointer; | |
658 | copy = (char *) xmalloc (len + macro_nest + 2); | |
659 | memset (copy, '>', macro_nest); | |
660 | copy[macro_nest] = ' '; | |
661 | memcpy (copy + macro_nest + 1, input_line_pointer, len); | |
662 | copy[macro_nest + 1 + len] = '\0'; | |
663 | ||
664 | /* Install the line with the listing facility. */ | |
665 | listing_newline (copy); | |
666 | } | |
667 | } | |
668 | else | |
669 | listing_newline (NULL); | |
670 | } | |
671 | #endif | |
672 | if (was_new_line) | |
673 | { | |
252b5132 RH |
674 | line_label = NULL; |
675 | ||
abd63a32 | 676 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
677 | { |
678 | /* Text at the start of a line must be a label, we | |
679 | run down and stick a colon in. */ | |
680 | if (is_name_beginner (*input_line_pointer)) | |
681 | { | |
682 | char *line_start = input_line_pointer; | |
252b5132 RH |
683 | int mri_line_macro; |
684 | ||
252b5132 RH |
685 | HANDLE_CONDITIONAL_ASSEMBLY (); |
686 | ||
687 | c = get_symbol_end (); | |
688 | ||
689 | /* In MRI mode, the EQU and MACRO pseudoops must | |
690 | be handled specially. */ | |
691 | mri_line_macro = 0; | |
692 | if (flag_m68k_mri) | |
693 | { | |
694 | char *rest = input_line_pointer + 1; | |
695 | ||
696 | if (*rest == ':') | |
697 | ++rest; | |
698 | if (*rest == ' ' || *rest == '\t') | |
699 | ++rest; | |
700 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
701 | || strncasecmp (rest, "SET", 3) == 0) | |
702 | && (rest[3] == ' ' || rest[3] == '\t')) | |
703 | { | |
704 | input_line_pointer = rest + 3; | |
705 | equals (line_start, | |
706 | strncasecmp (rest, "SET", 3) == 0); | |
707 | continue; | |
708 | } | |
709 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
710 | && (rest[5] == ' ' | |
711 | || rest[5] == '\t' | |
712 | || is_end_of_line[(unsigned char) rest[5]])) | |
713 | mri_line_macro = 1; | |
714 | } | |
715 | ||
716 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
717 | pseudo-op specially: we don't want to put the |
718 | symbol in the symbol table. */ | |
041ff4dd | 719 | if (!mri_line_macro |
a25c045a | 720 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
721 | && TC_START_LABEL_WITHOUT_COLON(c, |
722 | input_line_pointer) | |
a25c045a | 723 | #endif |
ef99799a | 724 | ) |
252b5132 RH |
725 | line_label = colon (line_start); |
726 | else | |
727 | line_label = symbol_create (line_start, | |
728 | absolute_section, | |
729 | (valueT) 0, | |
730 | &zero_address_frag); | |
731 | ||
732 | *input_line_pointer = c; | |
733 | if (c == ':') | |
734 | input_line_pointer++; | |
735 | } | |
736 | } | |
737 | } | |
738 | ||
47eebc20 | 739 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
740 | We expect a well-formed assembler statement. |
741 | A "symbol-name:" is a statement. | |
f0e652b4 | 742 | |
041ff4dd NC |
743 | Depending on what compiler is used, the order of these tests |
744 | may vary to catch most common case 1st. | |
d2bdaea8 AM |
745 | Each test is independent of all other tests at the (top) |
746 | level. */ | |
747 | do | |
041ff4dd | 748 | c = *input_line_pointer++; |
d2bdaea8 | 749 | while (c == '\t' || c == ' ' || c == '\f'); |
252b5132 | 750 | |
041ff4dd NC |
751 | /* C is the 1st significant character. |
752 | Input_line_pointer points after that character. */ | |
252b5132 RH |
753 | if (is_name_beginner (c)) |
754 | { | |
041ff4dd | 755 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
756 | HANDLE_CONDITIONAL_ASSEMBLY (); |
757 | ||
758 | s = --input_line_pointer; | |
041ff4dd NC |
759 | c = get_symbol_end (); /* name's delimiter. */ |
760 | ||
761 | /* C is character after symbol. | |
d6415f6c AM |
762 | That character's place in the input line is now '\0'. |
763 | S points to the beginning of the symbol. | |
764 | [In case of pseudo-op, s->'.'.] | |
765 | Input_line_pointer->'\0' where c was. */ | |
5e8c8f8f | 766 | if (TC_START_LABEL (c, s, input_line_pointer)) |
252b5132 RH |
767 | { |
768 | if (flag_m68k_mri) | |
769 | { | |
770 | char *rest = input_line_pointer + 1; | |
771 | ||
772 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
773 | if (*rest == ':') |
774 | ++rest; | |
f0e652b4 | 775 | |
252b5132 RH |
776 | if (*rest == ' ' || *rest == '\t') |
777 | ++rest; | |
f0e652b4 | 778 | |
252b5132 RH |
779 | if ((strncasecmp (rest, "EQU", 3) == 0 |
780 | || strncasecmp (rest, "SET", 3) == 0) | |
781 | && (rest[3] == ' ' || rest[3] == '\t')) | |
782 | { | |
783 | input_line_pointer = rest + 3; | |
784 | equals (s, 1); | |
785 | continue; | |
786 | } | |
787 | } | |
788 | ||
041ff4dd NC |
789 | line_label = colon (s); /* User-defined label. */ |
790 | /* Put ':' back for error messages' sake. */ | |
791 | *input_line_pointer++ = ':'; | |
a645d1eb L |
792 | #ifdef tc_check_label |
793 | tc_check_label (line_label); | |
794 | #endif | |
041ff4dd | 795 | /* Input_line_pointer->after ':'. */ |
252b5132 | 796 | SKIP_WHITESPACE (); |
252b5132 | 797 | } |
18d7868b HPN |
798 | else if ((c == '=' && input_line_pointer[1] == '=') |
799 | || ((c == ' ' || c == '\t') | |
800 | && input_line_pointer[1] == '=' | |
801 | && input_line_pointer[2] == '=')) | |
9497f5ac NC |
802 | { |
803 | equals (s, -1); | |
804 | demand_empty_rest_of_line (); | |
805 | } | |
ee3c9814 CM |
806 | else if ((c == '=' |
807 | || ((c == ' ' || c == '\t') | |
808 | && input_line_pointer[1] == '=')) | |
809 | #ifdef TC_EQUAL_IN_INSN | |
810 | && !TC_EQUAL_IN_INSN (c, s) | |
811 | #endif | |
812 | ) | |
252b5132 RH |
813 | { |
814 | equals (s, 1); | |
815 | demand_empty_rest_of_line (); | |
816 | } | |
817 | else | |
041ff4dd NC |
818 | { |
819 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
820 | pop = NULL; |
821 | ||
a8a3b3b2 | 822 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
823 | { |
824 | char *s2 = s; | |
37d8bb27 NC |
825 | |
826 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
827 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 828 | |
252b5132 RH |
829 | while (*s2) |
830 | { | |
3882b010 | 831 | *s2 = TOLOWER (*s2); |
252b5132 RH |
832 | s2++; |
833 | } | |
834 | } | |
835 | #endif | |
abd63a32 | 836 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 837 | { |
7be1c489 AM |
838 | /* The MRI assembler uses pseudo-ops without |
839 | a period. */ | |
252b5132 RH |
840 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
841 | if (pop != NULL && pop->poc_handler == NULL) | |
842 | pop = NULL; | |
843 | } | |
844 | ||
845 | if (pop != NULL | |
041ff4dd | 846 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 847 | { |
041ff4dd | 848 | /* PSEUDO - OP. |
f0e652b4 | 849 | |
d6415f6c AM |
850 | WARNING: c has next char, which may be end-of-line. |
851 | We lookup the pseudo-op table with s+1 because we | |
852 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
853 | |
854 | if (pop == NULL) | |
855 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
856 | if (pop && !pop->poc_handler) |
857 | pop = NULL; | |
252b5132 RH |
858 | |
859 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
860 | automatic alignment directive. What a hack |
861 | this is. */ | |
252b5132 RH |
862 | if (mri_pending_align |
863 | && (pop == NULL | |
041ff4dd NC |
864 | || !((pop->poc_handler == cons |
865 | && pop->poc_val == 1) | |
866 | || (pop->poc_handler == s_space | |
867 | && pop->poc_val == 1) | |
252b5132 | 868 | #ifdef tc_conditional_pseudoop |
041ff4dd | 869 | || tc_conditional_pseudoop (pop) |
252b5132 | 870 | #endif |
041ff4dd NC |
871 | || pop->poc_handler == s_if |
872 | || pop->poc_handler == s_ifdef | |
873 | || pop->poc_handler == s_ifc | |
874 | || pop->poc_handler == s_ifeqs | |
875 | || pop->poc_handler == s_else | |
876 | || pop->poc_handler == s_endif | |
877 | || pop->poc_handler == s_globl | |
878 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
879 | { |
880 | do_align (1, (char *) NULL, 0, 0); | |
881 | mri_pending_align = 0; | |
f0e652b4 | 882 | |
252b5132 RH |
883 | if (line_label != NULL) |
884 | { | |
2b47531b | 885 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
886 | S_SET_VALUE (line_label, frag_now_fix ()); |
887 | } | |
888 | } | |
889 | ||
041ff4dd | 890 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
891 | if (pop == NULL) |
892 | { | |
5e75c3ab JB |
893 | char *end = input_line_pointer; |
894 | ||
252b5132 RH |
895 | *input_line_pointer = c; |
896 | s_ignore (0); | |
5e75c3ab JB |
897 | c = *--input_line_pointer; |
898 | *input_line_pointer = '\0'; | |
899 | if (! macro_defined || ! try_macro (c, s)) | |
900 | { | |
901 | *end = '\0'; | |
902 | as_bad (_("unknown pseudo-op: `%s'"), s); | |
903 | *input_line_pointer++ = c; | |
904 | } | |
252b5132 RH |
905 | continue; |
906 | } | |
907 | ||
041ff4dd | 908 | /* Put it back for error messages etc. */ |
252b5132 RH |
909 | *input_line_pointer = c; |
910 | /* The following skip of whitespace is compulsory. | |
911 | A well shaped space is sometimes all that separates | |
041ff4dd | 912 | keyword from operands. */ |
252b5132 RH |
913 | if (c == ' ' || c == '\t') |
914 | input_line_pointer++; | |
041ff4dd NC |
915 | |
916 | /* Input_line is restored. | |
d6415f6c AM |
917 | Input_line_pointer->1st non-blank char |
918 | after pseudo-operation. */ | |
252b5132 RH |
919 | (*pop->poc_handler) (pop->poc_val); |
920 | ||
921 | /* If that was .end, just get out now. */ | |
922 | if (pop->poc_handler == s_end) | |
923 | goto quit; | |
924 | } | |
925 | else | |
926 | { | |
041ff4dd NC |
927 | /* WARNING: c has char, which may be end-of-line. */ |
928 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 | 929 | *input_line_pointer = c; |
7592cfd7 | 930 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0); |
252b5132 RH |
931 | c = *input_line_pointer; |
932 | *input_line_pointer = '\0'; | |
933 | ||
934 | generate_lineno_debug (); | |
935 | ||
5e75c3ab JB |
936 | if (macro_defined && try_macro (c, s)) |
937 | continue; | |
252b5132 RH |
938 | |
939 | if (mri_pending_align) | |
940 | { | |
941 | do_align (1, (char *) NULL, 0, 0); | |
942 | mri_pending_align = 0; | |
943 | if (line_label != NULL) | |
944 | { | |
2b47531b | 945 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
946 | S_SET_VALUE (line_label, frag_now_fix ()); |
947 | } | |
948 | } | |
949 | ||
041ff4dd | 950 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
951 | |
952 | *input_line_pointer++ = c; | |
953 | ||
954 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
955 | this instruction. */ |
956 | } | |
957 | } | |
252b5132 | 958 | continue; |
041ff4dd | 959 | } |
252b5132 RH |
960 | |
961 | /* Empty statement? */ | |
962 | if (is_end_of_line[(unsigned char) c]) | |
963 | continue; | |
964 | ||
3882b010 | 965 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 966 | { |
041ff4dd | 967 | /* local label ("4:") */ |
252b5132 RH |
968 | char *backup = input_line_pointer; |
969 | ||
970 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
971 | ||
972 | temp = c - '0'; | |
973 | ||
041ff4dd | 974 | /* Read the whole number. */ |
3882b010 | 975 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
976 | { |
977 | temp = (temp * 10) + *input_line_pointer - '0'; | |
978 | ++input_line_pointer; | |
041ff4dd | 979 | } |
252b5132 RH |
980 | |
981 | if (LOCAL_LABELS_DOLLAR | |
982 | && *input_line_pointer == '$' | |
983 | && *(input_line_pointer + 1) == ':') | |
984 | { | |
985 | input_line_pointer += 2; | |
986 | ||
987 | if (dollar_label_defined (temp)) | |
988 | { | |
989 | as_fatal (_("label \"%d$\" redefined"), temp); | |
990 | } | |
991 | ||
992 | define_dollar_label (temp); | |
993 | colon (dollar_label_name (temp, 0)); | |
994 | continue; | |
995 | } | |
996 | ||
997 | if (LOCAL_LABELS_FB | |
998 | && *input_line_pointer++ == ':') | |
999 | { | |
1000 | fb_label_instance_inc (temp); | |
1001 | colon (fb_label_name (temp, 0)); | |
1002 | continue; | |
1003 | } | |
1004 | ||
1005 | input_line_pointer = backup; | |
1006 | } /* local label ("4:") */ | |
1007 | ||
1008 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 1009 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 1010 | sb sbuf; |
252b5132 RH |
1011 | char *ends; |
1012 | char *new_buf; | |
1013 | char *new_tmp; | |
1014 | unsigned int new_length; | |
1015 | char *tmp_buf = 0; | |
1016 | ||
252b5132 RH |
1017 | s = input_line_pointer; |
1018 | if (strncmp (s, "APP\n", 4)) | |
601e61cd NC |
1019 | { |
1020 | /* We ignore it. */ | |
1021 | ignore_rest_of_line (); | |
1022 | continue; | |
1023 | } | |
1024 | bump_line_counters (); | |
252b5132 RH |
1025 | s += 4; |
1026 | ||
64e55042 | 1027 | sb_new (&sbuf); |
252b5132 RH |
1028 | ends = strstr (s, "#NO_APP\n"); |
1029 | ||
1030 | if (!ends) | |
1031 | { | |
1032 | unsigned int tmp_len; | |
1033 | unsigned int num; | |
1034 | ||
1035 | /* The end of the #APP wasn't in this buffer. We | |
1036 | keep reading in buffers until we find the #NO_APP | |
1037 | that goes with this #APP There is one. The specs | |
47eebc20 | 1038 | guarantee it... */ |
252b5132 | 1039 | tmp_len = buffer_limit - s; |
1e9cc1c2 | 1040 | tmp_buf = (char *) xmalloc (tmp_len + 1); |
252b5132 RH |
1041 | memcpy (tmp_buf, s, tmp_len); |
1042 | do | |
1043 | { | |
1044 | new_tmp = input_scrub_next_buffer (&buffer); | |
1045 | if (!new_tmp) | |
1046 | break; | |
1047 | else | |
1048 | buffer_limit = new_tmp; | |
1049 | input_line_pointer = buffer; | |
1050 | ends = strstr (buffer, "#NO_APP\n"); | |
1051 | if (ends) | |
1052 | num = ends - buffer; | |
1053 | else | |
1054 | num = buffer_limit - buffer; | |
1055 | ||
1e9cc1c2 | 1056 | tmp_buf = (char *) xrealloc (tmp_buf, tmp_len + num); |
252b5132 RH |
1057 | memcpy (tmp_buf + tmp_len, buffer, num); |
1058 | tmp_len += num; | |
1059 | } | |
1060 | while (!ends); | |
1061 | ||
1062 | input_line_pointer = ends ? ends + 8 : NULL; | |
1063 | ||
1064 | s = tmp_buf; | |
1065 | ends = s + tmp_len; | |
1066 | ||
1067 | } | |
1068 | else | |
1069 | { | |
1070 | input_line_pointer = ends + 8; | |
1071 | } | |
1072 | ||
1073 | scrub_string = s; | |
1074 | scrub_string_end = ends; | |
1075 | ||
1076 | new_length = ends - s; | |
1077 | new_buf = (char *) xmalloc (new_length); | |
1078 | new_tmp = new_buf; | |
1079 | for (;;) | |
1080 | { | |
1081 | int space; | |
1082 | int size; | |
1083 | ||
1084 | space = (new_buf + new_length) - new_tmp; | |
1085 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1086 | ||
1087 | if (size < space) | |
1088 | { | |
64e55042 | 1089 | new_tmp[size] = 0; |
252b5132 RH |
1090 | break; |
1091 | } | |
1092 | ||
1e9cc1c2 | 1093 | new_buf = (char *) xrealloc (new_buf, new_length + 100); |
252b5132 RH |
1094 | new_tmp = new_buf + new_length; |
1095 | new_length += 100; | |
1096 | } | |
1097 | ||
1098 | if (tmp_buf) | |
1099 | free (tmp_buf); | |
f0e652b4 | 1100 | |
64e55042 HPN |
1101 | /* We've "scrubbed" input to the preferred format. In the |
1102 | process we may have consumed the whole of the remaining | |
1103 | file (and included files). We handle this formatted | |
1104 | input similar to that of macro expansion, letting | |
1105 | actual macro expansion (possibly nested) and other | |
1106 | input expansion work. Beware that in messages, line | |
1107 | numbers and possibly file names will be incorrect. */ | |
1108 | sb_add_string (&sbuf, new_buf); | |
1109 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); | |
1110 | sb_kill (&sbuf); | |
1111 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1112 | free (new_buf); | |
252b5132 RH |
1113 | continue; |
1114 | } | |
1115 | ||
1116 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1117 | ||
1118 | #ifdef tc_unrecognized_line | |
1119 | if (tc_unrecognized_line (c)) | |
1120 | continue; | |
1121 | #endif | |
0e389e77 | 1122 | input_line_pointer--; |
601e61cd | 1123 | /* Report unknown char as error. */ |
c95b35a9 | 1124 | demand_empty_rest_of_line (); |
041ff4dd | 1125 | } |
252b5132 RH |
1126 | |
1127 | #ifdef md_after_pass_hook | |
1128 | md_after_pass_hook (); | |
1129 | #endif | |
041ff4dd | 1130 | } |
252b5132 RH |
1131 | |
1132 | quit: | |
1133 | ||
1134 | #ifdef md_cleanup | |
041ff4dd | 1135 | md_cleanup (); |
252b5132 | 1136 | #endif |
041ff4dd NC |
1137 | /* Close the input file. */ |
1138 | input_scrub_close (); | |
4c400d5e AM |
1139 | #ifdef WARN_COMMENTS |
1140 | { | |
1141 | if (warn_comment && found_comment) | |
1142 | as_warn_where (found_comment_file, found_comment, | |
1143 | "first comment found here"); | |
1144 | } | |
1145 | #endif | |
252b5132 RH |
1146 | } |
1147 | ||
e5604d79 RS |
1148 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
1149 | Take the sign of the number from X_unsigned rather than X_add_number. */ | |
1150 | ||
1151 | static void | |
1152 | convert_to_bignum (expressionS *exp) | |
1153 | { | |
1154 | valueT value; | |
1155 | unsigned int i; | |
1156 | ||
1157 | value = exp->X_add_number; | |
1158 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1159 | { | |
1160 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1161 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1162 | } | |
1163 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1164 | the sign of the original value. */ | |
1165 | if ((exp->X_add_number < 0) != !exp->X_unsigned) | |
1166 | generic_bignum[i++] = exp->X_unsigned ? 0 : LITTLENUM_MASK; | |
1167 | exp->X_op = O_big; | |
1168 | exp->X_add_number = i; | |
1169 | } | |
1170 | ||
252b5132 RH |
1171 | /* For most MRI pseudo-ops, the line actually ends at the first |
1172 | nonquoted space. This function looks for that point, stuffs a null | |
1173 | in, and sets *STOPCP to the character that used to be there, and | |
1174 | returns the location. | |
1175 | ||
1176 | Until I hear otherwise, I am going to assume that this is only true | |
1177 | for the m68k MRI assembler. */ | |
1178 | ||
1179 | char * | |
39e6acbd | 1180 | mri_comment_field (char *stopcp) |
252b5132 | 1181 | { |
252b5132 | 1182 | char *s; |
041ff4dd | 1183 | #ifdef TC_M68K |
252b5132 RH |
1184 | int inquote = 0; |
1185 | ||
1186 | know (flag_m68k_mri); | |
1187 | ||
1188 | for (s = input_line_pointer; | |
041ff4dd | 1189 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1190 | || inquote); |
1191 | s++) | |
1192 | { | |
1193 | if (*s == '\'') | |
041ff4dd | 1194 | inquote = !inquote; |
252b5132 | 1195 | } |
252b5132 | 1196 | #else |
041ff4dd NC |
1197 | for (s = input_line_pointer; |
1198 | !is_end_of_line[(unsigned char) *s]; | |
1199 | s++) | |
252b5132 | 1200 | ; |
041ff4dd | 1201 | #endif |
252b5132 RH |
1202 | *stopcp = *s; |
1203 | *s = '\0'; | |
f0e652b4 | 1204 | |
252b5132 | 1205 | return s; |
252b5132 RH |
1206 | } |
1207 | ||
1208 | /* Skip to the end of an MRI comment field. */ | |
1209 | ||
1210 | void | |
39e6acbd | 1211 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1212 | { |
1213 | know (flag_mri); | |
1214 | ||
1215 | input_line_pointer = stop; | |
1216 | *stop = stopc; | |
041ff4dd | 1217 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1218 | ++input_line_pointer; |
1219 | } | |
1220 | ||
041ff4dd | 1221 | void |
39e6acbd | 1222 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1223 | { |
1224 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1225 | } | |
1226 | ||
1227 | /* Guts of .align directive. N is the power of two to which to align. | |
1228 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1229 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1230 | the maximum number of characters to skip when doing the alignment, | |
1231 | or 0 if there is no maximum. */ | |
1232 | ||
041ff4dd | 1233 | static void |
39e6acbd | 1234 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1235 | { |
ebeb9253 AM |
1236 | if (now_seg == absolute_section) |
1237 | { | |
1238 | if (fill != NULL) | |
1239 | while (len-- > 0) | |
1240 | if (*fill++ != '\0') | |
1241 | { | |
1242 | as_warn (_("ignoring fill value in absolute section")); | |
1243 | break; | |
1244 | } | |
1245 | fill = NULL; | |
1246 | len = 0; | |
1247 | } | |
1248 | ||
b8861cfb NS |
1249 | #ifdef md_flush_pending_output |
1250 | md_flush_pending_output (); | |
1251 | #endif | |
252b5132 RH |
1252 | #ifdef md_do_align |
1253 | md_do_align (n, fill, len, max, just_record_alignment); | |
1254 | #endif | |
1255 | ||
041ff4dd | 1256 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1257 | if (n != 0 && !need_pass_2) |
1258 | { | |
0a9ef439 RH |
1259 | if (fill == NULL) |
1260 | { | |
1261 | if (subseg_text_p (now_seg)) | |
1262 | frag_align_code (n, max); | |
1263 | else | |
1264 | frag_align (n, 0, max); | |
1265 | } | |
1266 | else if (len <= 1) | |
252b5132 RH |
1267 | frag_align (n, *fill, max); |
1268 | else | |
1269 | frag_align_pattern (n, fill, len, max); | |
1270 | } | |
1271 | ||
1272 | #ifdef md_do_align | |
a6bd2a4f | 1273 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1274 | #endif |
1275 | ||
bea9907b | 1276 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1277 | } |
1278 | ||
1279 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1280 | (in bytes). A negative ARG is the negative of the length of the | |
1281 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1282 | interpreted as the byte boundary, rather than the power of 2. */ | |
11ec4ba9 DS |
1283 | #ifndef TC_ALIGN_LIMIT |
1284 | #define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1285 | #endif | |
9ebd302d | 1286 | |
252b5132 | 1287 | static void |
39e6acbd | 1288 | s_align (int arg, int bytes_p) |
252b5132 | 1289 | { |
11ec4ba9 | 1290 | unsigned int align_limit = TC_ALIGN_LIMIT; |
9ebd302d | 1291 | unsigned int align; |
252b5132 | 1292 | char *stop = NULL; |
fb25138b | 1293 | char stopc = 0; |
252b5132 RH |
1294 | offsetT fill = 0; |
1295 | int max; | |
1296 | int fill_p; | |
1297 | ||
1298 | if (flag_mri) | |
1299 | stop = mri_comment_field (&stopc); | |
1300 | ||
1301 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1302 | { | |
1303 | if (arg < 0) | |
1304 | align = 0; | |
1305 | else | |
041ff4dd | 1306 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1307 | } |
1308 | else | |
1309 | { | |
1310 | align = get_absolute_expression (); | |
1311 | SKIP_WHITESPACE (); | |
1312 | } | |
1313 | ||
1314 | if (bytes_p) | |
1315 | { | |
1316 | /* Convert to a power of 2. */ | |
1317 | if (align != 0) | |
1318 | { | |
1319 | unsigned int i; | |
1320 | ||
1321 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1322 | ; | |
1323 | if (align != 1) | |
0e389e77 | 1324 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1325 | |
252b5132 RH |
1326 | align = i; |
1327 | } | |
1328 | } | |
1329 | ||
b617dc20 | 1330 | if (align > align_limit) |
252b5132 | 1331 | { |
b617dc20 | 1332 | align = align_limit; |
0e389e77 | 1333 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1334 | } |
1335 | ||
1336 | if (*input_line_pointer != ',') | |
1337 | { | |
1338 | fill_p = 0; | |
1339 | max = 0; | |
1340 | } | |
1341 | else | |
1342 | { | |
1343 | ++input_line_pointer; | |
1344 | if (*input_line_pointer == ',') | |
1345 | fill_p = 0; | |
1346 | else | |
1347 | { | |
1348 | fill = get_absolute_expression (); | |
1349 | SKIP_WHITESPACE (); | |
1350 | fill_p = 1; | |
1351 | } | |
1352 | ||
1353 | if (*input_line_pointer != ',') | |
1354 | max = 0; | |
1355 | else | |
1356 | { | |
1357 | ++input_line_pointer; | |
1358 | max = get_absolute_expression (); | |
1359 | } | |
1360 | } | |
1361 | ||
041ff4dd | 1362 | if (!fill_p) |
252b5132 RH |
1363 | { |
1364 | if (arg < 0) | |
1365 | as_warn (_("expected fill pattern missing")); | |
1366 | do_align (align, (char *) NULL, 0, max); | |
1367 | } | |
1368 | else | |
1369 | { | |
1370 | int fill_len; | |
1371 | ||
1372 | if (arg >= 0) | |
1373 | fill_len = 1; | |
1374 | else | |
041ff4dd | 1375 | fill_len = -arg; |
252b5132 RH |
1376 | if (fill_len <= 1) |
1377 | { | |
1378 | char fill_char; | |
1379 | ||
1380 | fill_char = fill; | |
1381 | do_align (align, &fill_char, fill_len, max); | |
1382 | } | |
1383 | else | |
1384 | { | |
1385 | char ab[16]; | |
1386 | ||
1387 | if ((size_t) fill_len > sizeof ab) | |
1388 | abort (); | |
1389 | md_number_to_chars (ab, fill, fill_len); | |
1390 | do_align (align, ab, fill_len, max); | |
1391 | } | |
1392 | } | |
1393 | ||
1394 | demand_empty_rest_of_line (); | |
1395 | ||
1396 | if (flag_mri) | |
1397 | mri_comment_end (stop, stopc); | |
1398 | } | |
1399 | ||
1400 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1401 | align to a 4 byte boundary. */ | |
1402 | ||
041ff4dd | 1403 | void |
39e6acbd | 1404 | s_align_bytes (int arg) |
252b5132 RH |
1405 | { |
1406 | s_align (arg, 1); | |
1407 | } | |
1408 | ||
1409 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1410 | to a 2**4 boundary. */ | |
1411 | ||
041ff4dd | 1412 | void |
39e6acbd | 1413 | s_align_ptwo (int arg) |
252b5132 RH |
1414 | { |
1415 | s_align (arg, 0); | |
1416 | } | |
1417 | ||
caa32fe5 NC |
1418 | /* Switch in and out of alternate macro mode. */ |
1419 | ||
1420 | void | |
1421 | s_altmacro (int on) | |
1422 | { | |
1423 | demand_empty_rest_of_line (); | |
1424 | macro_set_alternate (on); | |
1425 | } | |
1426 | ||
e13bab5a AM |
1427 | symbolS * |
1428 | s_comm_internal (int param, | |
1429 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1430 | { |
e13bab5a AM |
1431 | char *name; |
1432 | char c; | |
1433 | char *p; | |
1434 | offsetT temp, size; | |
1435 | symbolS *symbolP = NULL; | |
252b5132 | 1436 | char *stop = NULL; |
fb25138b | 1437 | char stopc = 0; |
e13bab5a | 1438 | expressionS exp; |
252b5132 RH |
1439 | |
1440 | if (flag_mri) | |
1441 | stop = mri_comment_field (&stopc); | |
1442 | ||
1443 | name = input_line_pointer; | |
1444 | c = get_symbol_end (); | |
041ff4dd | 1445 | /* Just after name is now '\0'. */ |
252b5132 RH |
1446 | p = input_line_pointer; |
1447 | *p = c; | |
0e389e77 AM |
1448 | |
1449 | if (name == p) | |
1450 | { | |
1451 | as_bad (_("expected symbol name")); | |
40a4d956 | 1452 | ignore_rest_of_line (); |
e13bab5a | 1453 | goto out; |
0e389e77 AM |
1454 | } |
1455 | ||
252b5132 | 1456 | SKIP_WHITESPACE (); |
f0e652b4 | 1457 | |
e13bab5a AM |
1458 | /* Accept an optional comma after the name. The comma used to be |
1459 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1460 | if (*input_line_pointer == ',') | |
1461 | input_line_pointer++; | |
1462 | ||
e13bab5a AM |
1463 | temp = get_absolute_expr (&exp); |
1464 | size = temp; | |
e13bab5a | 1465 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; |
e13bab5a | 1466 | if (exp.X_op == O_absent) |
252b5132 | 1467 | { |
e13bab5a | 1468 | as_bad (_("missing size expression")); |
252b5132 | 1469 | ignore_rest_of_line (); |
e13bab5a | 1470 | goto out; |
252b5132 | 1471 | } |
e13bab5a | 1472 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1473 | { |
e13bab5a | 1474 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1475 | ignore_rest_of_line (); |
e13bab5a | 1476 | goto out; |
252b5132 | 1477 | } |
f0e652b4 | 1478 | |
a207757e | 1479 | *p = 0; |
252b5132 | 1480 | symbolP = symbol_find_or_make (name); |
92757bc9 JB |
1481 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
1482 | && !S_IS_COMMON (symbolP)) | |
252b5132 | 1483 | { |
92757bc9 JB |
1484 | if (!S_IS_VOLATILE (symbolP)) |
1485 | { | |
1486 | symbolP = NULL; | |
1487 | as_bad (_("symbol `%s' is already defined"), name); | |
1488 | *p = c; | |
1489 | ignore_rest_of_line (); | |
1490 | goto out; | |
1491 | } | |
89cdfe57 | 1492 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 JB |
1493 | S_SET_SEGMENT (symbolP, undefined_section); |
1494 | S_SET_VALUE (symbolP, 0); | |
1495 | symbol_set_frag (symbolP, &zero_address_frag); | |
1496 | S_CLEAR_VOLATILE (symbolP); | |
252b5132 | 1497 | } |
f0e652b4 | 1498 | |
e13bab5a AM |
1499 | size = S_GET_VALUE (symbolP); |
1500 | if (size == 0) | |
1501 | size = temp; | |
1502 | else if (size != temp) | |
1503 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1504 | name, (long) size, (long) temp); | |
1505 | ||
1506 | *p = c; | |
1507 | if (comm_parse_extra != NULL) | |
1508 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1509 | else |
1510 | { | |
e13bab5a | 1511 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1512 | S_SET_EXTERNAL (symbolP); |
9eda1ce9 | 1513 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr); |
252b5132 | 1514 | #ifdef OBJ_VMS |
e13bab5a AM |
1515 | { |
1516 | extern int flag_one; | |
1517 | if (size == 0 || !flag_one) | |
1518 | S_GET_OTHER (symbolP) = const_flag; | |
1519 | } | |
1520 | #endif | |
1521 | } | |
252b5132 RH |
1522 | |
1523 | demand_empty_rest_of_line (); | |
e13bab5a | 1524 | out: |
252b5132 RH |
1525 | if (flag_mri) |
1526 | mri_comment_end (stop, stopc); | |
e13bab5a AM |
1527 | return symbolP; |
1528 | } | |
1529 | ||
1530 | void | |
1531 | s_comm (int ignore) | |
1532 | { | |
1533 | s_comm_internal (ignore, NULL); | |
1534 | } | |
252b5132 RH |
1535 | |
1536 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1537 | symbol with the appropriate name. We make s_space do the right | |
1538 | thing by increasing the size. */ | |
1539 | ||
1540 | void | |
39e6acbd | 1541 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1542 | { |
1543 | char *name; | |
1544 | char c; | |
1545 | char *alc = NULL; | |
1546 | symbolS *sym; | |
1547 | offsetT align; | |
1548 | char *stop = NULL; | |
fb25138b | 1549 | char stopc = 0; |
252b5132 | 1550 | |
041ff4dd | 1551 | if (!flag_mri) |
252b5132 RH |
1552 | { |
1553 | s_comm (0); | |
1554 | return; | |
1555 | } | |
1556 | ||
1557 | stop = mri_comment_field (&stopc); | |
1558 | ||
1559 | SKIP_WHITESPACE (); | |
1560 | ||
1561 | name = input_line_pointer; | |
3882b010 | 1562 | if (!ISDIGIT (*name)) |
252b5132 RH |
1563 | c = get_symbol_end (); |
1564 | else | |
1565 | { | |
1566 | do | |
1567 | { | |
1568 | ++input_line_pointer; | |
1569 | } | |
3882b010 | 1570 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1571 | |
252b5132 RH |
1572 | c = *input_line_pointer; |
1573 | *input_line_pointer = '\0'; | |
1574 | ||
1575 | if (line_label != NULL) | |
1576 | { | |
1577 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1578 | + (input_line_pointer - name) | |
1579 | + 1); | |
1580 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1581 | name = alc; | |
1582 | } | |
1583 | } | |
1584 | ||
1585 | sym = symbol_find_or_make (name); | |
1586 | *input_line_pointer = c; | |
1587 | if (alc != NULL) | |
1588 | free (alc); | |
1589 | ||
1590 | if (*input_line_pointer != ',') | |
1591 | align = 0; | |
1592 | else | |
1593 | { | |
1594 | ++input_line_pointer; | |
1595 | align = get_absolute_expression (); | |
1596 | } | |
1597 | ||
041ff4dd | 1598 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1599 | { |
0e389e77 | 1600 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1601 | ignore_rest_of_line (); |
1602 | mri_comment_end (stop, stopc); | |
1603 | return; | |
1604 | } | |
1605 | ||
1606 | S_SET_EXTERNAL (sym); | |
9eda1ce9 | 1607 | S_SET_SEGMENT (sym, bfd_com_section_ptr); |
252b5132 RH |
1608 | mri_common_symbol = sym; |
1609 | ||
1610 | #ifdef S_SET_ALIGN | |
1611 | if (align != 0) | |
1612 | S_SET_ALIGN (sym, align); | |
87975d2a AM |
1613 | #else |
1614 | (void) align; | |
252b5132 RH |
1615 | #endif |
1616 | ||
1617 | if (line_label != NULL) | |
1618 | { | |
2b47531b ILT |
1619 | expressionS exp; |
1620 | exp.X_op = O_symbol; | |
1621 | exp.X_add_symbol = sym; | |
1622 | exp.X_add_number = 0; | |
1623 | symbol_set_value_expression (line_label, &exp); | |
1624 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1625 | S_SET_SEGMENT (line_label, expr_section); |
1626 | } | |
1627 | ||
1628 | /* FIXME: We just ignore the small argument, which distinguishes | |
1629 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1630 | ||
1631 | /* Ignore the type and hptype. */ | |
1632 | if (*input_line_pointer == ',') | |
1633 | input_line_pointer += 2; | |
1634 | if (*input_line_pointer == ',') | |
1635 | input_line_pointer += 2; | |
1636 | ||
1637 | demand_empty_rest_of_line (); | |
1638 | ||
1639 | mri_comment_end (stop, stopc); | |
1640 | } | |
1641 | ||
1642 | void | |
39e6acbd | 1643 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1644 | { |
1645 | segT section; | |
3d540e93 | 1646 | int temp; |
252b5132 RH |
1647 | |
1648 | temp = get_absolute_expression (); | |
1649 | if (flag_readonly_data_in_text) | |
1650 | { | |
1651 | section = text_section; | |
1652 | temp += 1000; | |
1653 | } | |
1654 | else | |
1655 | section = data_section; | |
1656 | ||
1657 | subseg_set (section, (subsegT) temp); | |
1658 | ||
1659 | #ifdef OBJ_VMS | |
1660 | const_flag = 0; | |
1661 | #endif | |
1662 | demand_empty_rest_of_line (); | |
1663 | } | |
1664 | ||
1665 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1666 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1667 | file name. This default definition may be overridden by the object | |
1668 | or CPU specific pseudo-ops. This function is also the default | |
1669 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1670 | .file. */ | |
1671 | ||
ecb4347a | 1672 | void |
f17c130b | 1673 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1674 | { |
1675 | #ifdef LISTING | |
1676 | if (listing) | |
1677 | listing_source_file (file); | |
1678 | #endif | |
1679 | register_dependency (file); | |
1680 | #ifdef obj_app_file | |
c04f5787 | 1681 | obj_app_file (file, appfile); |
ecb4347a DJ |
1682 | #endif |
1683 | } | |
1684 | ||
041ff4dd | 1685 | void |
39e6acbd | 1686 | s_app_file (int appfile) |
252b5132 | 1687 | { |
3d540e93 | 1688 | char *s; |
252b5132 RH |
1689 | int length; |
1690 | ||
041ff4dd | 1691 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1692 | if ((s = demand_copy_string (&length)) != 0) |
1693 | { | |
252b5132 | 1694 | int may_omit |
93e914b2 | 1695 | = (!new_logical_line_flags (s, -1, 1) && appfile); |
252b5132 RH |
1696 | |
1697 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1698 | backquote. */ |
252b5132 RH |
1699 | if (flag_m68k_mri |
1700 | && *input_line_pointer == '\'' | |
1701 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1702 | ++input_line_pointer; | |
1703 | ||
1704 | demand_empty_rest_of_line (); | |
041ff4dd | 1705 | if (!may_omit) |
c04f5787 | 1706 | s_app_file_string (s, appfile); |
252b5132 RH |
1707 | } |
1708 | } | |
1709 | ||
e9fc6c21 AO |
1710 | static int |
1711 | get_linefile_number (int *flag) | |
1712 | { | |
1713 | SKIP_WHITESPACE (); | |
1714 | ||
1715 | if (*input_line_pointer < '0' || *input_line_pointer > '9') | |
1716 | return 0; | |
1717 | ||
1718 | *flag = get_absolute_expression (); | |
1719 | ||
1720 | return 1; | |
1721 | } | |
1722 | ||
252b5132 RH |
1723 | /* Handle the .appline pseudo-op. This is automatically generated by |
1724 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1725 | default definition may be overridden by the object or CPU specific | |
1726 | pseudo-ops. */ | |
1727 | ||
1728 | void | |
93e914b2 | 1729 | s_app_line (int appline) |
252b5132 | 1730 | { |
e9fc6c21 | 1731 | char *file = NULL; |
252b5132 RH |
1732 | int l; |
1733 | ||
1734 | /* The given number is that of the next line. */ | |
e9fc6c21 AO |
1735 | if (appline) |
1736 | l = get_absolute_expression (); | |
1737 | else if (!get_linefile_number (&l)) | |
1738 | { | |
1739 | ignore_rest_of_line (); | |
1740 | return; | |
1741 | } | |
1742 | ||
1743 | l--; | |
47837f8e NC |
1744 | |
1745 | if (l < -1) | |
252b5132 | 1746 | /* Some of the back ends can't deal with non-positive line numbers. |
47837f8e NC |
1747 | Besides, it's silly. GCC however will generate a line number of |
1748 | zero when it is pre-processing builtins for assembler-with-cpp files: | |
1749 | ||
1750 | # 0 "<built-in>" | |
1751 | ||
1752 | We do not want to barf on this, especially since such files are used | |
1753 | in the GCC and GDB testsuites. So we check for negative line numbers | |
1754 | rather than non-positive line numbers. */ | |
0e389e77 | 1755 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1756 | l + 1); |
252b5132 RH |
1757 | else |
1758 | { | |
93e914b2 | 1759 | int flags = 0; |
93e914b2 AO |
1760 | int length = 0; |
1761 | ||
1762 | if (!appline) | |
1763 | { | |
e9fc6c21 AO |
1764 | SKIP_WHITESPACE (); |
1765 | ||
1766 | if (*input_line_pointer == '"') | |
1767 | file = demand_copy_string (&length); | |
93e914b2 AO |
1768 | |
1769 | if (file) | |
1770 | { | |
1771 | int this_flag; | |
1772 | ||
e9fc6c21 | 1773 | while (get_linefile_number (&this_flag)) |
93e914b2 AO |
1774 | switch (this_flag) |
1775 | { | |
1776 | /* From GCC's cpp documentation: | |
1777 | 1: start of a new file. | |
1778 | 2: returning to a file after having included | |
1779 | another file. | |
1780 | 3: following text comes from a system header file. | |
1781 | 4: following text should be treated as extern "C". | |
1782 | ||
1783 | 4 is nonsensical for the assembler; 3, we don't | |
1784 | care about, so we ignore it just in case a | |
1785 | system header file is included while | |
1786 | preprocessing assembly. So 1 and 2 are all we | |
1787 | care about, and they are mutually incompatible. | |
1788 | new_logical_line_flags() demands this. */ | |
1789 | case 1: | |
1790 | case 2: | |
1791 | if (flags && flags != (1 << this_flag)) | |
1792 | as_warn (_("incompatible flag %i in line directive"), | |
1793 | this_flag); | |
1794 | else | |
1795 | flags |= 1 << this_flag; | |
1796 | break; | |
1797 | ||
1798 | case 3: | |
1799 | case 4: | |
1800 | /* We ignore these. */ | |
1801 | break; | |
1802 | ||
1803 | default: | |
1804 | as_warn (_("unsupported flag %i in line directive"), | |
1805 | this_flag); | |
1806 | break; | |
1807 | } | |
e9fc6c21 AO |
1808 | |
1809 | if (!is_end_of_line[(unsigned char)*input_line_pointer]) | |
1810 | file = 0; | |
93e914b2 AO |
1811 | } |
1812 | } | |
1813 | ||
e9fc6c21 AO |
1814 | if (appline || file) |
1815 | { | |
1816 | new_logical_line_flags (file, l, flags); | |
252b5132 | 1817 | #ifdef LISTING |
e9fc6c21 AO |
1818 | if (listing) |
1819 | listing_source_line (l); | |
252b5132 | 1820 | #endif |
e9fc6c21 | 1821 | } |
252b5132 | 1822 | } |
e9fc6c21 AO |
1823 | if (appline || file) |
1824 | demand_empty_rest_of_line (); | |
1825 | else | |
1826 | ignore_rest_of_line (); | |
252b5132 RH |
1827 | } |
1828 | ||
1829 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1830 | read_a_source_file. */ | |
1831 | ||
1832 | void | |
39e6acbd | 1833 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1834 | { |
1835 | if (flag_mri) | |
1836 | { | |
1837 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 1838 | but we don't support that. */ |
252b5132 | 1839 | SKIP_WHITESPACE (); |
041ff4dd | 1840 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1841 | && *input_line_pointer != '*' |
1842 | && *input_line_pointer != '!') | |
1843 | as_warn (_("start address not supported")); | |
1844 | } | |
1845 | } | |
1846 | ||
1847 | /* Handle the .err pseudo-op. */ | |
1848 | ||
1849 | void | |
39e6acbd | 1850 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1851 | { |
1852 | as_bad (_(".err encountered")); | |
1853 | demand_empty_rest_of_line (); | |
d190d046 HPN |
1854 | } |
1855 | ||
1856 | /* Handle the .error and .warning pseudo-ops. */ | |
1857 | ||
1858 | void | |
1859 | s_errwarn (int err) | |
1860 | { | |
1861 | int len; | |
1862 | /* The purpose for the conditional assignment is not to | |
1863 | internationalize the directive itself, but that we need a | |
1864 | self-contained message, one that can be passed like the | |
1865 | demand_copy_C_string return value, and with no assumption on the | |
1866 | location of the name of the directive within the message. */ | |
1867 | char *msg | |
1868 | = (err ? _(".error directive invoked in source file") | |
1869 | : _(".warning directive invoked in source file")); | |
1870 | ||
1871 | if (!is_it_end_of_statement ()) | |
1872 | { | |
1873 | if (*input_line_pointer != '\"') | |
1874 | { | |
1875 | as_bad (_("%s argument must be a string"), | |
1876 | err ? ".error" : ".warning"); | |
40a4d956 | 1877 | ignore_rest_of_line (); |
d190d046 HPN |
1878 | return; |
1879 | } | |
1880 | ||
1881 | msg = demand_copy_C_string (&len); | |
1882 | if (msg == NULL) | |
1883 | return; | |
1884 | } | |
1885 | ||
1886 | if (err) | |
1887 | as_bad ("%s", msg); | |
1888 | else | |
1889 | as_warn ("%s", msg); | |
1890 | demand_empty_rest_of_line (); | |
252b5132 RH |
1891 | } |
1892 | ||
1893 | /* Handle the MRI fail pseudo-op. */ | |
1894 | ||
1895 | void | |
39e6acbd | 1896 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1897 | { |
1898 | offsetT temp; | |
1899 | char *stop = NULL; | |
fb25138b | 1900 | char stopc = 0; |
252b5132 RH |
1901 | |
1902 | if (flag_mri) | |
1903 | stop = mri_comment_field (&stopc); | |
1904 | ||
1905 | temp = get_absolute_expression (); | |
1906 | if (temp >= 500) | |
1907 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1908 | else | |
1909 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1910 | ||
1911 | demand_empty_rest_of_line (); | |
1912 | ||
1913 | if (flag_mri) | |
1914 | mri_comment_end (stop, stopc); | |
1915 | } | |
1916 | ||
041ff4dd | 1917 | void |
39e6acbd | 1918 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1919 | { |
1920 | expressionS rep_exp; | |
1921 | long size = 1; | |
3d540e93 | 1922 | long fill = 0; |
252b5132 RH |
1923 | char *p; |
1924 | ||
1925 | #ifdef md_flush_pending_output | |
1926 | md_flush_pending_output (); | |
1927 | #endif | |
1928 | ||
cc3f603a JM |
1929 | #ifdef md_cons_align |
1930 | md_cons_align (1); | |
1931 | #endif | |
1932 | ||
252b5132 RH |
1933 | get_known_segmented_expression (&rep_exp); |
1934 | if (*input_line_pointer == ',') | |
1935 | { | |
1936 | input_line_pointer++; | |
1937 | size = get_absolute_expression (); | |
1938 | if (*input_line_pointer == ',') | |
1939 | { | |
1940 | input_line_pointer++; | |
1941 | fill = get_absolute_expression (); | |
1942 | } | |
1943 | } | |
1944 | ||
1945 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1946 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1947 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1948 | { | |
0e389e77 | 1949 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
1950 | size = BSD_FILL_SIZE_CROCK_8; |
1951 | } | |
1952 | if (size < 0) | |
1953 | { | |
0e389e77 | 1954 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
1955 | size = 0; |
1956 | } | |
1957 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1958 | { | |
1959 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 1960 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
1961 | size = 0; |
1962 | } | |
1963 | ||
1964 | if (size && !need_pass_2) | |
1965 | { | |
1966 | if (rep_exp.X_op == O_constant) | |
1967 | { | |
1968 | p = frag_var (rs_fill, (int) size, (int) size, | |
1969 | (relax_substateT) 0, (symbolS *) 0, | |
1970 | (offsetT) rep_exp.X_add_number, | |
1971 | (char *) 0); | |
1972 | } | |
1973 | else | |
1974 | { | |
1975 | /* We don't have a constant repeat count, so we can't use | |
1976 | rs_fill. We can get the same results out of rs_space, | |
1977 | but its argument is in bytes, so we must multiply the | |
1978 | repeat count by size. */ | |
1979 | ||
1980 | symbolS *rep_sym; | |
1981 | rep_sym = make_expr_symbol (&rep_exp); | |
1982 | if (size != 1) | |
1983 | { | |
1984 | expressionS size_exp; | |
1985 | size_exp.X_op = O_constant; | |
1986 | size_exp.X_add_number = size; | |
1987 | ||
1988 | rep_exp.X_op = O_multiply; | |
1989 | rep_exp.X_add_symbol = rep_sym; | |
1990 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1991 | rep_exp.X_add_number = 0; | |
1992 | rep_sym = make_expr_symbol (&rep_exp); | |
1993 | } | |
1994 | ||
1995 | p = frag_var (rs_space, (int) size, (int) size, | |
1996 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1997 | } | |
f0e652b4 | 1998 | |
252b5132 | 1999 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 2000 | |
252b5132 | 2001 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
2002 | flavoured AS. The following bizarre behaviour is to be |
2003 | compatible with above. I guess they tried to take up to 8 | |
2004 | bytes from a 4-byte expression and they forgot to sign | |
2005 | extend. */ | |
252b5132 RH |
2006 | #define BSD_FILL_SIZE_CROCK_4 (4) |
2007 | md_number_to_chars (p, (valueT) fill, | |
2008 | (size > BSD_FILL_SIZE_CROCK_4 | |
2009 | ? BSD_FILL_SIZE_CROCK_4 | |
2010 | : (int) size)); | |
2011 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
2012 | but emits no error message because it seems a legal thing to do. |
2013 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 2014 | compiler. */ |
252b5132 RH |
2015 | } |
2016 | demand_empty_rest_of_line (); | |
2017 | } | |
2018 | ||
041ff4dd | 2019 | void |
39e6acbd | 2020 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2021 | { |
2022 | char *name; | |
2023 | int c; | |
2024 | symbolS *symbolP; | |
2025 | char *stop = NULL; | |
fb25138b | 2026 | char stopc = 0; |
252b5132 RH |
2027 | |
2028 | if (flag_mri) | |
2029 | stop = mri_comment_field (&stopc); | |
2030 | ||
2031 | do | |
2032 | { | |
2033 | name = input_line_pointer; | |
2034 | c = get_symbol_end (); | |
2035 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
2036 | S_SET_EXTERNAL (symbolP); |
2037 | ||
252b5132 RH |
2038 | *input_line_pointer = c; |
2039 | SKIP_WHITESPACE (); | |
58b5739a | 2040 | c = *input_line_pointer; |
252b5132 RH |
2041 | if (c == ',') |
2042 | { | |
2043 | input_line_pointer++; | |
2044 | SKIP_WHITESPACE (); | |
0e389e77 | 2045 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2046 | c = '\n'; |
2047 | } | |
2048 | } | |
2049 | while (c == ','); | |
2050 | ||
2051 | demand_empty_rest_of_line (); | |
2052 | ||
2053 | if (flag_mri) | |
2054 | mri_comment_end (stop, stopc); | |
2055 | } | |
2056 | ||
104d59d1 JM |
2057 | #ifdef OBJ_ELF |
2058 | #define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0) | |
2059 | ||
2060 | static inline int | |
2061 | skip_past_char (char ** str, char c) | |
2062 | { | |
2063 | if (**str == c) | |
2064 | { | |
2065 | (*str)++; | |
2066 | return 0; | |
2067 | } | |
2068 | else | |
2069 | return -1; | |
2070 | } | |
2071 | #define skip_past_comma(str) skip_past_char (str, ',') | |
2072 | ||
ee3c0378 AS |
2073 | /* Parse an attribute directive for VENDOR. |
2074 | Returns the attribute number read, or zero on error. */ | |
2075 | int | |
104d59d1 JM |
2076 | s_vendor_attribute (int vendor) |
2077 | { | |
2078 | expressionS exp; | |
2079 | int type; | |
2080 | int tag; | |
2081 | unsigned int i = 0; | |
2082 | char *s = NULL; | |
104d59d1 | 2083 | |
e04befd0 AS |
2084 | /* Read the first number or name. */ |
2085 | skip_whitespace (input_line_pointer); | |
2086 | s = input_line_pointer; | |
2087 | if (ISDIGIT (*input_line_pointer)) | |
2088 | { | |
2089 | expression (& exp); | |
2090 | if (exp.X_op != O_constant) | |
2091 | goto bad; | |
2092 | tag = exp.X_add_number; | |
2093 | } | |
2094 | else | |
2095 | { | |
2096 | char *name; | |
2097 | ||
2098 | /* A name may contain '_', but no other punctuation. */ | |
2099 | for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_'; | |
2100 | ++input_line_pointer) | |
2101 | i++; | |
2102 | if (i == 0) | |
2103 | goto bad; | |
2104 | ||
1e9cc1c2 | 2105 | name = (char *) alloca (i + 1); |
e04befd0 AS |
2106 | memcpy (name, s, i); |
2107 | name[i] = '\0'; | |
2108 | ||
2109 | #ifndef CONVERT_SYMBOLIC_ATTRIBUTE | |
2110 | #define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1 | |
2111 | #endif | |
2112 | ||
2113 | tag = CONVERT_SYMBOLIC_ATTRIBUTE (name); | |
2114 | if (tag == -1) | |
2115 | { | |
2116 | as_bad (_("Attribute name not recognised: %s"), name); | |
2117 | ignore_rest_of_line (); | |
ee3c0378 | 2118 | return 0; |
e04befd0 AS |
2119 | } |
2120 | } | |
104d59d1 | 2121 | |
104d59d1 JM |
2122 | type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag); |
2123 | ||
2124 | if (skip_past_comma (&input_line_pointer) == -1) | |
2125 | goto bad; | |
2126 | if (type & 1) | |
2127 | { | |
2128 | expression (& exp); | |
2129 | if (exp.X_op != O_constant) | |
2130 | { | |
2131 | as_bad (_("expected numeric constant")); | |
2132 | ignore_rest_of_line (); | |
ee3c0378 | 2133 | return 0; |
104d59d1 JM |
2134 | } |
2135 | i = exp.X_add_number; | |
2136 | } | |
2d0bb761 | 2137 | if ((type & 3) == 3 |
104d59d1 JM |
2138 | && skip_past_comma (&input_line_pointer) == -1) |
2139 | { | |
2140 | as_bad (_("expected comma")); | |
2141 | ignore_rest_of_line (); | |
ee3c0378 | 2142 | return 0; |
104d59d1 JM |
2143 | } |
2144 | if (type & 2) | |
2145 | { | |
e04befd0 AS |
2146 | int len; |
2147 | ||
2148 | skip_whitespace (input_line_pointer); | |
104d59d1 JM |
2149 | if (*input_line_pointer != '"') |
2150 | goto bad_string; | |
e04befd0 | 2151 | s = demand_copy_C_string (&len); |
104d59d1 JM |
2152 | } |
2153 | ||
2d0bb761 | 2154 | switch (type & 3) |
104d59d1 JM |
2155 | { |
2156 | case 3: | |
7b86a9fa | 2157 | bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s); |
104d59d1 JM |
2158 | break; |
2159 | case 2: | |
2160 | bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s); | |
2161 | break; | |
2162 | case 1: | |
2163 | bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i); | |
2164 | break; | |
2165 | default: | |
2166 | abort (); | |
2167 | } | |
2168 | ||
104d59d1 | 2169 | demand_empty_rest_of_line (); |
ee3c0378 | 2170 | return tag; |
104d59d1 JM |
2171 | bad_string: |
2172 | as_bad (_("bad string constant")); | |
2173 | ignore_rest_of_line (); | |
ee3c0378 | 2174 | return 0; |
104d59d1 JM |
2175 | bad: |
2176 | as_bad (_("expected <tag> , <value>")); | |
2177 | ignore_rest_of_line (); | |
ee3c0378 | 2178 | return 0; |
104d59d1 JM |
2179 | } |
2180 | ||
2181 | /* Parse a .gnu_attribute directive. */ | |
2182 | ||
2183 | static void | |
2184 | s_gnu_attribute (int ignored ATTRIBUTE_UNUSED) | |
2185 | { | |
2186 | s_vendor_attribute (OBJ_ATTR_GNU); | |
2187 | } | |
2188 | #endif /* OBJ_ELF */ | |
2189 | ||
252b5132 RH |
2190 | /* Handle the MRI IRP and IRPC pseudo-ops. */ |
2191 | ||
2192 | void | |
39e6acbd | 2193 | s_irp (int irpc) |
252b5132 | 2194 | { |
40a4d956 | 2195 | char *file, *eol; |
252b5132 RH |
2196 | unsigned int line; |
2197 | sb s; | |
2198 | const char *err; | |
2199 | sb out; | |
2200 | ||
2201 | as_where (&file, &line); | |
2202 | ||
2203 | sb_new (&s); | |
40a4d956 JB |
2204 | eol = find_end_of_line (input_line_pointer, 0); |
2205 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2206 | input_line_pointer = eol; | |
252b5132 RH |
2207 | |
2208 | sb_new (&out); | |
2209 | ||
7592cfd7 | 2210 | err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb); |
252b5132 RH |
2211 | if (err != NULL) |
2212 | as_bad_where (file, line, "%s", err); | |
2213 | ||
2214 | sb_kill (&s); | |
2215 | ||
9f10757c | 2216 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
2217 | sb_kill (&out); |
2218 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2219 | } | |
2220 | ||
2221 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
2222 | the section to only be linked once. However, this is not supported | |
2223 | by most object file formats. This takes an optional argument, | |
2224 | which is what to do about duplicates. */ | |
2225 | ||
2226 | void | |
39e6acbd | 2227 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2228 | { |
2229 | enum linkonce_type type; | |
2230 | ||
2231 | SKIP_WHITESPACE (); | |
2232 | ||
2233 | type = LINKONCE_DISCARD; | |
2234 | ||
041ff4dd | 2235 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2236 | { |
2237 | char *s; | |
2238 | char c; | |
2239 | ||
2240 | s = input_line_pointer; | |
2241 | c = get_symbol_end (); | |
2242 | if (strcasecmp (s, "discard") == 0) | |
2243 | type = LINKONCE_DISCARD; | |
2244 | else if (strcasecmp (s, "one_only") == 0) | |
2245 | type = LINKONCE_ONE_ONLY; | |
2246 | else if (strcasecmp (s, "same_size") == 0) | |
2247 | type = LINKONCE_SAME_SIZE; | |
2248 | else if (strcasecmp (s, "same_contents") == 0) | |
2249 | type = LINKONCE_SAME_CONTENTS; | |
2250 | else | |
2251 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
2252 | ||
2253 | *input_line_pointer = c; | |
2254 | } | |
2255 | ||
2256 | #ifdef obj_handle_link_once | |
2257 | obj_handle_link_once (type); | |
2258 | #else /* ! defined (obj_handle_link_once) */ | |
252b5132 RH |
2259 | { |
2260 | flagword flags; | |
2261 | ||
2262 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
2263 | as_warn (_(".linkonce is not supported for this object file format")); | |
2264 | ||
2265 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
2266 | flags |= SEC_LINK_ONCE; | |
2267 | switch (type) | |
2268 | { | |
2269 | default: | |
2270 | abort (); | |
2271 | case LINKONCE_DISCARD: | |
2272 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
2273 | break; | |
2274 | case LINKONCE_ONE_ONLY: | |
2275 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
2276 | break; | |
2277 | case LINKONCE_SAME_SIZE: | |
2278 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2279 | break; | |
2280 | case LINKONCE_SAME_CONTENTS: | |
2281 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2282 | break; | |
2283 | } | |
041ff4dd | 2284 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2285 | as_bad (_("bfd_set_section_flags: %s"), |
2286 | bfd_errmsg (bfd_get_error ())); | |
2287 | } | |
252b5132 RH |
2288 | #endif /* ! defined (obj_handle_link_once) */ |
2289 | ||
2290 | demand_empty_rest_of_line (); | |
2291 | } | |
2292 | ||
e13bab5a AM |
2293 | void |
2294 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2295 | { |
e13bab5a | 2296 | char *pfrag; |
252b5132 RH |
2297 | segT current_seg = now_seg; |
2298 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2299 | segT bss_seg = bss_section; |
2300 | ||
252b5132 RH |
2301 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2302 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2303 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2304 | { | |
2305 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2306 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2307 | { |
2308 | bss_seg = subseg_new (".sbss", 1); | |
2309 | seg_info (bss_seg)->bss = 1; | |
041ff4dd | 2310 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2311 | as_warn (_("error setting flags for \".sbss\": %s"), |
2312 | bfd_errmsg (bfd_get_error ())); | |
252b5132 RH |
2313 | } |
2314 | } | |
2315 | #endif | |
e13bab5a | 2316 | subseg_set (bss_seg, 1); |
8684e216 | 2317 | |
e13bab5a | 2318 | if (align) |
041ff4dd | 2319 | { |
e13bab5a AM |
2320 | record_alignment (bss_seg, align); |
2321 | frag_align (align, 0, 0); | |
041ff4dd | 2322 | } |
252b5132 | 2323 | |
e13bab5a AM |
2324 | /* Detach from old frag. */ |
2325 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2326 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2327 | |
e13bab5a AM |
2328 | symbol_set_frag (symbolP, frag_now); |
2329 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2330 | *pfrag = 0; | |
f0e652b4 | 2331 | |
e13bab5a AM |
2332 | #ifdef S_SET_SIZE |
2333 | S_SET_SIZE (symbolP, size); | |
2334 | #endif | |
2335 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2336 | |
e13bab5a AM |
2337 | #ifdef OBJ_COFF |
2338 | /* The symbol may already have been created with a preceding | |
2339 | ".globl" directive -- be careful not to step on storage class | |
2340 | in that case. Otherwise, set it to static. */ | |
2341 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2342 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2343 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2344 | |
e13bab5a AM |
2345 | subseg_set (current_seg, current_subseg); |
2346 | } | |
f0e652b4 | 2347 | |
e13bab5a AM |
2348 | offsetT |
2349 | parse_align (int align_bytes) | |
2350 | { | |
2351 | expressionS exp; | |
2352 | addressT align; | |
252b5132 | 2353 | |
e13bab5a AM |
2354 | SKIP_WHITESPACE (); |
2355 | if (*input_line_pointer != ',') | |
2356 | { | |
2357 | no_align: | |
2358 | as_bad (_("expected alignment after size")); | |
2359 | ignore_rest_of_line (); | |
2360 | return -1; | |
2361 | } | |
f0e652b4 | 2362 | |
e13bab5a AM |
2363 | input_line_pointer++; |
2364 | SKIP_WHITESPACE (); | |
f0e652b4 | 2365 | |
e13bab5a AM |
2366 | align = get_absolute_expr (&exp); |
2367 | if (exp.X_op == O_absent) | |
2368 | goto no_align; | |
2369 | ||
2370 | if (!exp.X_unsigned) | |
2371 | { | |
2372 | as_warn (_("alignment negative; 0 assumed")); | |
2373 | align = 0; | |
041ff4dd | 2374 | } |
e13bab5a AM |
2375 | |
2376 | if (align_bytes && align != 0) | |
252b5132 | 2377 | { |
e13bab5a AM |
2378 | /* convert to a power of 2 alignment */ |
2379 | unsigned int alignp2 = 0; | |
2380 | while ((align & 1) == 0) | |
2381 | align >>= 1, ++alignp2; | |
2382 | if (align != 1) | |
252b5132 | 2383 | { |
e13bab5a AM |
2384 | as_bad (_("alignment not a power of 2")); |
2385 | ignore_rest_of_line (); | |
2386 | return -1; | |
252b5132 | 2387 | } |
e13bab5a | 2388 | align = alignp2; |
252b5132 | 2389 | } |
e13bab5a AM |
2390 | return align; |
2391 | } | |
252b5132 | 2392 | |
e13bab5a AM |
2393 | /* Called from s_comm_internal after symbol name and size have been |
2394 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2395 | 1 if this was a ".bss" directive which has a 3rd argument | |
2396 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2397 | with alignment in bytes. */ | |
252b5132 | 2398 | |
13c56984 | 2399 | symbolS * |
e13bab5a AM |
2400 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2401 | { | |
2402 | addressT align = 0; | |
252b5132 | 2403 | |
e13bab5a AM |
2404 | if (needs_align) |
2405 | { | |
2406 | align = parse_align (needs_align - 1); | |
2407 | if (align == (addressT) -1) | |
2408 | return NULL; | |
252b5132 RH |
2409 | } |
2410 | else | |
e13bab5a AM |
2411 | /* Assume some objects may require alignment on some systems. */ |
2412 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2413 | |
e13bab5a AM |
2414 | bss_alloc (symbolP, size, align); |
2415 | return symbolP; | |
041ff4dd | 2416 | } |
252b5132 RH |
2417 | |
2418 | void | |
39e6acbd | 2419 | s_lcomm (int needs_align) |
252b5132 | 2420 | { |
e13bab5a | 2421 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2422 | } |
2423 | ||
041ff4dd | 2424 | void |
39e6acbd | 2425 | s_lcomm_bytes (int needs_align) |
252b5132 | 2426 | { |
e13bab5a | 2427 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2428 | } |
2429 | ||
041ff4dd | 2430 | void |
39e6acbd | 2431 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2432 | { |
3d540e93 NC |
2433 | char *name; |
2434 | char c; | |
2435 | char *p; | |
252b5132 | 2436 | expressionS exp; |
3d540e93 | 2437 | symbolS *symbolP; |
252b5132 | 2438 | |
041ff4dd | 2439 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2440 | name = input_line_pointer; |
2441 | c = get_symbol_end (); | |
2442 | p = input_line_pointer; | |
2443 | *p = c; | |
0e389e77 AM |
2444 | |
2445 | if (name == p) | |
2446 | { | |
2447 | as_bad (_("expected symbol name")); | |
40a4d956 | 2448 | ignore_rest_of_line (); |
0e389e77 AM |
2449 | return; |
2450 | } | |
2451 | ||
252b5132 | 2452 | SKIP_WHITESPACE (); |
f0e652b4 | 2453 | |
252b5132 RH |
2454 | if (*input_line_pointer != ',') |
2455 | { | |
2456 | *p = 0; | |
0e389e77 | 2457 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2458 | *p = c; |
2459 | ignore_rest_of_line (); | |
2460 | return; | |
2461 | } | |
f0e652b4 | 2462 | |
252b5132 | 2463 | input_line_pointer++; |
9497f5ac | 2464 | expression_and_evaluate (&exp); |
f0e652b4 | 2465 | |
252b5132 RH |
2466 | if (exp.X_op != O_constant |
2467 | && exp.X_op != O_register) | |
2468 | { | |
2469 | as_bad (_("bad expression")); | |
2470 | ignore_rest_of_line (); | |
2471 | return; | |
2472 | } | |
f0e652b4 | 2473 | |
252b5132 RH |
2474 | *p = 0; |
2475 | symbolP = symbol_find_or_make (name); | |
2476 | ||
86ebace2 | 2477 | if (S_GET_SEGMENT (symbolP) == undefined_section) |
252b5132 RH |
2478 | { |
2479 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2480 | keep the "external" bit. */ |
252b5132 RH |
2481 | S_SET_SEGMENT (symbolP, |
2482 | (exp.X_op == O_constant | |
2483 | ? absolute_section | |
2484 | : reg_section)); | |
2485 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2486 | } | |
2487 | else | |
2488 | { | |
0e389e77 | 2489 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2490 | } |
f0e652b4 | 2491 | |
252b5132 RH |
2492 | *p = c; |
2493 | demand_empty_rest_of_line (); | |
041ff4dd | 2494 | } |
252b5132 | 2495 | |
0822d075 NC |
2496 | /* Read a line into an sb. Returns the character that ended the line |
2497 | or zero if there are no more lines. */ | |
252b5132 RH |
2498 | |
2499 | static int | |
7592cfd7 | 2500 | get_line_sb (sb *line, int in_macro) |
252b5132 | 2501 | { |
40a4d956 | 2502 | char *eol; |
252b5132 RH |
2503 | |
2504 | if (input_line_pointer[-1] == '\n') | |
2505 | bump_line_counters (); | |
2506 | ||
2507 | if (input_line_pointer >= buffer_limit) | |
2508 | { | |
2509 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2510 | if (buffer_limit == 0) | |
2511 | return 0; | |
2512 | } | |
2513 | ||
7592cfd7 | 2514 | eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro); |
40a4d956 JB |
2515 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); |
2516 | input_line_pointer = eol; | |
f0e652b4 | 2517 | |
0822d075 NC |
2518 | /* Don't skip multiple end-of-line characters, because that breaks support |
2519 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2520 | characters but isn't. Instead just skip one end of line character and | |
2521 | return the character skipped so that the caller can re-insert it if | |
2522 | necessary. */ | |
40a4d956 | 2523 | return *input_line_pointer++; |
252b5132 RH |
2524 | } |
2525 | ||
7592cfd7 NC |
2526 | static int |
2527 | get_non_macro_line_sb (sb *line) | |
2528 | { | |
2529 | return get_line_sb (line, 0); | |
2530 | } | |
2531 | ||
2532 | static int | |
2533 | get_macro_line_sb (sb *line) | |
2534 | { | |
2535 | return get_line_sb (line, 1); | |
2536 | } | |
2537 | ||
fea17916 | 2538 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2539 | |
2540 | void | |
39e6acbd | 2541 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2542 | { |
40a4d956 | 2543 | char *file, *eol; |
252b5132 RH |
2544 | unsigned int line; |
2545 | sb s; | |
252b5132 RH |
2546 | const char *err; |
2547 | const char *name; | |
2548 | ||
2549 | as_where (&file, &line); | |
2550 | ||
2551 | sb_new (&s); | |
40a4d956 JB |
2552 | eol = find_end_of_line (input_line_pointer, 0); |
2553 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | |
2554 | input_line_pointer = eol; | |
252b5132 | 2555 | |
252b5132 | 2556 | if (line_label != NULL) |
360e86f1 JB |
2557 | { |
2558 | sb label; | |
252b5132 | 2559 | |
360e86f1 JB |
2560 | sb_new (&label); |
2561 | sb_add_string (&label, S_GET_NAME (line_label)); | |
7592cfd7 | 2562 | err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name); |
360e86f1 JB |
2563 | sb_kill (&label); |
2564 | } | |
2565 | else | |
7592cfd7 | 2566 | err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name); |
252b5132 | 2567 | if (err != NULL) |
02ddf156 | 2568 | as_bad_where (file, line, err, name); |
252b5132 RH |
2569 | else |
2570 | { | |
2571 | if (line_label != NULL) | |
2572 | { | |
5e75c3ab | 2573 | S_SET_SEGMENT (line_label, absolute_section); |
252b5132 | 2574 | S_SET_VALUE (line_label, 0); |
2b47531b | 2575 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2576 | } |
2577 | ||
abd63a32 | 2578 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2579 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2580 | || (!flag_m68k_mri |
252b5132 RH |
2581 | && *name == '.' |
2582 | && hash_find (po_hash, name + 1) != NULL)) | |
02ddf156 JB |
2583 | as_warn_where (file, |
2584 | line, | |
2585 | _("attempt to redefine pseudo-op `%s' ignored"), | |
252b5132 RH |
2586 | name); |
2587 | } | |
2588 | ||
2589 | sb_kill (&s); | |
2590 | } | |
2591 | ||
2592 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2593 | expansion. */ | |
2594 | ||
2595 | void | |
39e6acbd | 2596 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2597 | { |
5808f4a6 NC |
2598 | if (macro_nest) |
2599 | { | |
2600 | cond_exit_macro (macro_nest); | |
2601 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2602 | } | |
2603 | else | |
2604 | as_warn (_("ignoring macro exit outside a macro definition.")); | |
252b5132 RH |
2605 | } |
2606 | ||
2607 | /* Switch in and out of MRI mode. */ | |
2608 | ||
2609 | void | |
39e6acbd | 2610 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2611 | { |
3d540e93 NC |
2612 | int on; |
2613 | #ifdef MRI_MODE_CHANGE | |
2614 | int old_flag; | |
2615 | #endif | |
252b5132 RH |
2616 | |
2617 | on = get_absolute_expression (); | |
3d540e93 | 2618 | #ifdef MRI_MODE_CHANGE |
252b5132 | 2619 | old_flag = flag_mri; |
3d540e93 | 2620 | #endif |
252b5132 RH |
2621 | if (on != 0) |
2622 | { | |
2623 | flag_mri = 1; | |
2624 | #ifdef TC_M68K | |
2625 | flag_m68k_mri = 1; | |
2626 | #endif | |
2627 | macro_mri_mode (1); | |
2628 | } | |
2629 | else | |
2630 | { | |
2631 | flag_mri = 0; | |
abd63a32 | 2632 | #ifdef TC_M68K |
252b5132 | 2633 | flag_m68k_mri = 0; |
abd63a32 | 2634 | #endif |
252b5132 RH |
2635 | macro_mri_mode (0); |
2636 | } | |
2637 | ||
2638 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2639 | update the operator rankings. */ | |
2640 | expr_set_precedence (); | |
2641 | ||
2642 | #ifdef MRI_MODE_CHANGE | |
2643 | if (on != old_flag) | |
2644 | MRI_MODE_CHANGE (on); | |
2645 | #endif | |
2646 | ||
2647 | demand_empty_rest_of_line (); | |
2648 | } | |
2649 | ||
2650 | /* Handle changing the location counter. */ | |
2651 | ||
2652 | static void | |
39e6acbd | 2653 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 RH |
2654 | { |
2655 | if (segment != now_seg && segment != absolute_section) | |
0e389e77 | 2656 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2657 | |
2658 | if (now_seg == absolute_section) | |
2659 | { | |
2660 | if (fill != 0) | |
2661 | as_warn (_("ignoring fill value in absolute section")); | |
2662 | if (exp->X_op != O_constant) | |
2663 | { | |
2664 | as_bad (_("only constant offsets supported in absolute section")); | |
2665 | exp->X_add_number = 0; | |
2666 | } | |
2667 | abs_section_offset = exp->X_add_number; | |
2668 | } | |
2669 | else | |
2670 | { | |
2671 | char *p; | |
2289f85d AM |
2672 | symbolS *sym = exp->X_add_symbol; |
2673 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2674 | |
2289f85d AM |
2675 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2676 | { | |
2677 | /* Handle complex expressions. */ | |
2678 | sym = make_expr_symbol (exp); | |
2679 | off = 0; | |
2680 | } | |
2681 | ||
2682 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2683 | *p = fill; |
2684 | } | |
2685 | } | |
2686 | ||
041ff4dd | 2687 | void |
39e6acbd | 2688 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 2689 | { |
3d540e93 | 2690 | segT segment; |
252b5132 | 2691 | expressionS exp; |
3d540e93 | 2692 | long temp_fill; |
252b5132 RH |
2693 | |
2694 | #ifdef md_flush_pending_output | |
2695 | md_flush_pending_output (); | |
2696 | #endif | |
2697 | ||
2698 | /* The m68k MRI assembler has a different meaning for .org. It | |
2699 | means to create an absolute section at a given address. We can't | |
2700 | support that--use a linker script instead. */ | |
2701 | if (flag_m68k_mri) | |
2702 | { | |
2703 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2704 | ignore_rest_of_line (); | |
2705 | return; | |
2706 | } | |
2707 | ||
2708 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2709 | thing as a sub-segment-relative origin. Any absolute origin is | |
2710 | given a warning, then assumed to be segment-relative. Any | |
2711 | segmented origin expression ("foo+42") had better be in the right | |
2712 | segment or the .org is ignored. | |
2713 | ||
2714 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2715 | we never know sub-segment sizes when we are reading code. BSD | |
2716 | will crash trying to emit negative numbers of filler bytes in | |
2717 | certain .orgs. We don't crash, but see as-write for that code. | |
2718 | ||
2719 | Don't make frag if need_pass_2==1. */ | |
2720 | segment = get_known_segmented_expression (&exp); | |
2721 | if (*input_line_pointer == ',') | |
2722 | { | |
2723 | input_line_pointer++; | |
2724 | temp_fill = get_absolute_expression (); | |
2725 | } | |
2726 | else | |
2727 | temp_fill = 0; | |
2728 | ||
2729 | if (!need_pass_2) | |
2730 | do_org (segment, &exp, temp_fill); | |
2731 | ||
2732 | demand_empty_rest_of_line (); | |
041ff4dd | 2733 | } |
252b5132 RH |
2734 | |
2735 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2736 | called by the obj-format routine which handles section changing | |
2737 | when in MRI mode. It will create a new section, and return it. It | |
2738 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
7be1c489 | 2739 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ |
252b5132 RH |
2740 | |
2741 | void | |
39e6acbd | 2742 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2743 | { |
2744 | #ifdef TC_M68K | |
2745 | ||
2746 | char *name; | |
2747 | char c; | |
2748 | segT seg; | |
2749 | ||
2750 | SKIP_WHITESPACE (); | |
041ff4dd | 2751 | |
252b5132 | 2752 | name = input_line_pointer; |
3882b010 | 2753 | if (!ISDIGIT (*name)) |
252b5132 RH |
2754 | c = get_symbol_end (); |
2755 | else | |
2756 | { | |
2757 | do | |
2758 | { | |
2759 | ++input_line_pointer; | |
2760 | } | |
3882b010 | 2761 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2762 | |
252b5132 RH |
2763 | c = *input_line_pointer; |
2764 | *input_line_pointer = '\0'; | |
2765 | } | |
2766 | ||
2767 | name = xstrdup (name); | |
2768 | ||
2769 | *input_line_pointer = c; | |
2770 | ||
2771 | seg = subseg_new (name, 0); | |
2772 | ||
2773 | if (*input_line_pointer == ',') | |
2774 | { | |
2775 | int align; | |
2776 | ||
2777 | ++input_line_pointer; | |
2778 | align = get_absolute_expression (); | |
2779 | record_alignment (seg, align); | |
2780 | } | |
2781 | ||
2782 | *type = 'C'; | |
2783 | if (*input_line_pointer == ',') | |
2784 | { | |
2785 | c = *++input_line_pointer; | |
3882b010 | 2786 | c = TOUPPER (c); |
252b5132 RH |
2787 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2788 | *type = c; | |
2789 | else | |
2790 | as_bad (_("unrecognized section type")); | |
2791 | ++input_line_pointer; | |
2792 | ||
252b5132 RH |
2793 | { |
2794 | flagword flags; | |
2795 | ||
2796 | flags = SEC_NO_FLAGS; | |
2797 | if (*type == 'C') | |
2798 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2799 | else if (*type == 'D' || *type == 'M') | |
2800 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2801 | else if (*type == 'R') | |
2802 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2803 | if (flags != SEC_NO_FLAGS) | |
2804 | { | |
041ff4dd | 2805 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2806 | as_warn (_("error setting flags for \"%s\": %s"), |
2807 | bfd_section_name (stdoutput, seg), | |
2808 | bfd_errmsg (bfd_get_error ())); | |
2809 | } | |
2810 | } | |
252b5132 RH |
2811 | } |
2812 | ||
2813 | /* Ignore the HP type. */ | |
2814 | if (*input_line_pointer == ',') | |
2815 | input_line_pointer += 2; | |
2816 | ||
2817 | demand_empty_rest_of_line (); | |
2818 | ||
2819 | #else /* ! TC_M68K */ | |
2820 | #ifdef TC_I960 | |
2821 | ||
2822 | char *name; | |
2823 | char c; | |
2824 | segT seg; | |
2825 | ||
2826 | SKIP_WHITESPACE (); | |
2827 | ||
2828 | name = input_line_pointer; | |
2829 | c = get_symbol_end (); | |
2830 | ||
2831 | name = xstrdup (name); | |
2832 | ||
2833 | *input_line_pointer = c; | |
2834 | ||
2835 | seg = subseg_new (name, 0); | |
2836 | ||
2837 | if (*input_line_pointer != ',') | |
2838 | *type = 'C'; | |
2839 | else | |
2840 | { | |
2841 | char *sectype; | |
2842 | ||
2843 | ++input_line_pointer; | |
2844 | SKIP_WHITESPACE (); | |
2845 | sectype = input_line_pointer; | |
2846 | c = get_symbol_end (); | |
2847 | if (*sectype == '\0') | |
2848 | *type = 'C'; | |
2849 | else if (strcasecmp (sectype, "text") == 0) | |
2850 | *type = 'C'; | |
2851 | else if (strcasecmp (sectype, "data") == 0) | |
2852 | *type = 'D'; | |
2853 | else if (strcasecmp (sectype, "romdata") == 0) | |
2854 | *type = 'R'; | |
2855 | else | |
2856 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2857 | *input_line_pointer = c; | |
2858 | } | |
2859 | ||
2860 | if (*input_line_pointer == ',') | |
2861 | { | |
2862 | char *seccmd; | |
2863 | ||
2864 | ++input_line_pointer; | |
2865 | SKIP_WHITESPACE (); | |
2866 | seccmd = input_line_pointer; | |
2867 | c = get_symbol_end (); | |
2868 | if (strcasecmp (seccmd, "absolute") == 0) | |
2869 | { | |
2870 | as_bad (_("absolute sections are not supported")); | |
2871 | *input_line_pointer = c; | |
2872 | ignore_rest_of_line (); | |
2873 | return; | |
2874 | } | |
2875 | else if (strcasecmp (seccmd, "align") == 0) | |
2876 | { | |
2877 | int align; | |
2878 | ||
2879 | *input_line_pointer = c; | |
2880 | align = get_absolute_expression (); | |
2881 | record_alignment (seg, align); | |
2882 | } | |
2883 | else | |
2884 | { | |
2885 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2886 | *input_line_pointer = c; | |
2887 | } | |
2888 | } | |
2889 | ||
041ff4dd | 2890 | demand_empty_rest_of_line (); |
252b5132 RH |
2891 | |
2892 | #else /* ! TC_I960 */ | |
2893 | /* The MRI assembler seems to use different forms of .sect for | |
2894 | different targets. */ | |
2895 | as_bad ("MRI mode not supported for this target"); | |
2896 | ignore_rest_of_line (); | |
2897 | #endif /* ! TC_I960 */ | |
2898 | #endif /* ! TC_M68K */ | |
2899 | } | |
2900 | ||
2901 | /* Handle the .print pseudo-op. */ | |
2902 | ||
2903 | void | |
39e6acbd | 2904 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2905 | { |
2906 | char *s; | |
2907 | int len; | |
2908 | ||
2909 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
2910 | if (s != NULL) |
2911 | printf ("%s\n", s); | |
252b5132 RH |
2912 | demand_empty_rest_of_line (); |
2913 | } | |
2914 | ||
2915 | /* Handle the .purgem pseudo-op. */ | |
2916 | ||
2917 | void | |
39e6acbd | 2918 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2919 | { |
2920 | if (is_it_end_of_statement ()) | |
2921 | { | |
2922 | demand_empty_rest_of_line (); | |
2923 | return; | |
2924 | } | |
2925 | ||
2926 | do | |
2927 | { | |
2928 | char *name; | |
2929 | char c; | |
2930 | ||
2931 | SKIP_WHITESPACE (); | |
2932 | name = input_line_pointer; | |
2933 | c = get_symbol_end (); | |
2934 | delete_macro (name); | |
2935 | *input_line_pointer = c; | |
2936 | SKIP_WHITESPACE (); | |
2937 | } | |
2938 | while (*input_line_pointer++ == ','); | |
2939 | ||
2940 | --input_line_pointer; | |
2941 | demand_empty_rest_of_line (); | |
2942 | } | |
2943 | ||
057f53c1 | 2944 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 2945 | |
057f53c1 JB |
2946 | static void |
2947 | s_bad_end (int endr) | |
7f28ab9d | 2948 | { |
057f53c1 JB |
2949 | as_warn (_(".end%c encountered without preceeding %s"), |
2950 | endr ? 'r' : 'm', | |
2951 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
2952 | demand_empty_rest_of_line (); |
2953 | } | |
2954 | ||
2955 | /* Handle the .rept pseudo-op. */ | |
2956 | ||
252b5132 | 2957 | void |
39e6acbd | 2958 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2959 | { |
2960 | int count; | |
252b5132 RH |
2961 | |
2962 | count = get_absolute_expression (); | |
2963 | ||
041ff4dd | 2964 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2965 | } |
2966 | ||
2967 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2968 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2969 | |
2970 | void | |
39e6acbd | 2971 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
2972 | { |
2973 | sb one; | |
2974 | sb many; | |
2975 | ||
252b5132 | 2976 | sb_new (&one); |
7592cfd7 | 2977 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) |
252b5132 | 2978 | { |
6dc19fc4 | 2979 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2980 | return; |
2981 | } | |
2982 | ||
2983 | sb_new (&many); | |
2984 | while (count-- > 0) | |
2985 | sb_add_sb (&many, &one); | |
2986 | ||
2987 | sb_kill (&one); | |
2988 | ||
9f10757c | 2989 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2990 | sb_kill (&many); |
2991 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2992 | } | |
2993 | ||
c7927a3c NC |
2994 | /* Like do_repeat except that any text matching EXPANDER in the |
2995 | block is replaced by the itteration count. */ | |
2996 | ||
2997 | void | |
2998 | do_repeat_with_expander (int count, | |
2999 | const char * start, | |
3000 | const char * end, | |
3001 | const char * expander) | |
3002 | { | |
3003 | sb one; | |
3004 | sb many; | |
3005 | ||
3006 | sb_new (&one); | |
3007 | if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb)) | |
3008 | { | |
3009 | as_bad (_("%s without %s"), start, end); | |
3010 | return; | |
3011 | } | |
3012 | ||
3013 | sb_new (&many); | |
3014 | ||
3015 | if (expander != NULL && strstr (one.ptr, expander) != NULL) | |
3016 | { | |
3017 | while (count -- > 0) | |
3018 | { | |
3019 | int len; | |
3020 | char * sub; | |
3021 | sb processed; | |
3022 | ||
3023 | sb_new (& processed); | |
3024 | sb_add_sb (& processed, & one); | |
3025 | sub = strstr (processed.ptr, expander); | |
3026 | len = sprintf (sub, "%d", count); | |
3027 | gas_assert (len < 8); | |
3028 | strcpy (sub + len, sub + 8); | |
3029 | processed.len -= (8 - len); | |
3030 | sb_add_sb (& many, & processed); | |
3031 | sb_kill (& processed); | |
3032 | } | |
3033 | } | |
3034 | else | |
3035 | while (count-- > 0) | |
3036 | sb_add_sb (&many, &one); | |
3037 | ||
3038 | sb_kill (&one); | |
3039 | ||
3040 | input_scrub_include_sb (&many, input_line_pointer, 1); | |
3041 | sb_kill (&many); | |
3042 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3043 | } | |
3044 | ||
6dc19fc4 TW |
3045 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
3046 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 3047 | are properly nested. |
6dc19fc4 TW |
3048 | |
3049 | This function makes it easier to implement a premature "break" out of the | |
3050 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 3051 | such as line substitutions. */ |
6dc19fc4 TW |
3052 | |
3053 | void | |
39e6acbd | 3054 | end_repeat (int extra) |
6dc19fc4 TW |
3055 | { |
3056 | cond_exit_macro (macro_nest); | |
3057 | while (extra-- >= 0) | |
3058 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
3059 | } | |
3060 | ||
be95a9c1 | 3061 | static void |
9497f5ac | 3062 | assign_symbol (char *name, int mode) |
be95a9c1 AM |
3063 | { |
3064 | symbolS *symbolP; | |
3065 | ||
3066 | if (name[0] == '.' && name[1] == '\0') | |
3067 | { | |
3068 | /* Turn '. = mumble' into a .org mumble. */ | |
3069 | segT segment; | |
3070 | expressionS exp; | |
3071 | ||
3072 | segment = get_known_segmented_expression (&exp); | |
3073 | ||
3074 | if (!need_pass_2) | |
3075 | do_org (segment, &exp, 0); | |
3076 | ||
3077 | return; | |
3078 | } | |
3079 | ||
3080 | if ((symbolP = symbol_find (name)) == NULL | |
3081 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
3082 | { | |
3083 | symbolP = symbol_find_or_make (name); | |
3084 | #ifndef NO_LISTING | |
3085 | /* When doing symbol listings, play games with dummy fragments living | |
3086 | outside the normal fragment chain to record the file and line info | |
3087 | for this symbol. */ | |
3088 | if (listing & LISTING_SYMBOLS) | |
3089 | { | |
3090 | extern struct list_info_struct *listing_tail; | |
31d20a21 | 3091 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); |
be95a9c1 AM |
3092 | dummy_frag->line = listing_tail; |
3093 | dummy_frag->fr_symbol = symbolP; | |
3094 | symbol_set_frag (symbolP, dummy_frag); | |
3095 | } | |
3096 | #endif | |
31d20a21 AM |
3097 | #ifdef OBJ_COFF |
3098 | /* "set" symbols are local unless otherwise specified. */ | |
3099 | SF_SET_LOCAL (symbolP); | |
be95a9c1 AM |
3100 | #endif |
3101 | } | |
3102 | ||
6a2b6326 | 3103 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
9497f5ac NC |
3104 | { |
3105 | /* Permit register names to be redefined. */ | |
3106 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) | |
3107 | && S_GET_SEGMENT (symbolP) != reg_section) | |
3108 | { | |
3109 | as_bad (_("symbol `%s' is already defined"), name); | |
3110 | symbolP = symbol_clone (symbolP, 0); | |
3111 | } | |
3112 | /* If the symbol is volatile, copy the symbol and replace the | |
3113 | original with the copy, so that previous uses of the symbol will | |
3114 | retain the value of the symbol at the point of use. */ | |
89cdfe57 | 3115 | else if (S_IS_VOLATILE (symbolP)) |
9497f5ac NC |
3116 | symbolP = symbol_clone (symbolP, 1); |
3117 | } | |
3118 | ||
3119 | if (mode == 0) | |
3120 | S_SET_VOLATILE (symbolP); | |
3121 | else if (mode < 0) | |
3122 | S_SET_FORWARD_REF (symbolP); | |
be95a9c1 AM |
3123 | |
3124 | pseudo_set (symbolP); | |
be95a9c1 AM |
3125 | } |
3126 | ||
9497f5ac NC |
3127 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, |
3128 | then this is .equiv, and it is an error if the symbol is already | |
3129 | defined. If EQUIV is -1, the symbol additionally is a forward | |
3130 | reference. */ | |
252b5132 | 3131 | |
041ff4dd | 3132 | void |
39e6acbd | 3133 | s_set (int equiv) |
252b5132 | 3134 | { |
be95a9c1 AM |
3135 | char *name; |
3136 | char delim; | |
3137 | char *end_name; | |
252b5132 | 3138 | |
041ff4dd NC |
3139 | /* Especial apologies for the random logic: |
3140 | this just grew, and could be parsed much more simply! | |
3141 | Dean in haste. */ | |
252b5132 RH |
3142 | name = input_line_pointer; |
3143 | delim = get_symbol_end (); | |
3144 | end_name = input_line_pointer; | |
0e389e77 | 3145 | *end_name = delim; |
409d19c4 | 3146 | |
0e389e77 | 3147 | if (name == end_name) |
409d19c4 AM |
3148 | { |
3149 | as_bad (_("expected symbol name")); | |
40a4d956 | 3150 | ignore_rest_of_line (); |
409d19c4 AM |
3151 | return; |
3152 | } | |
3153 | ||
252b5132 RH |
3154 | SKIP_WHITESPACE (); |
3155 | ||
3156 | if (*input_line_pointer != ',') | |
3157 | { | |
3158 | *end_name = 0; | |
0e389e77 | 3159 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
3160 | *end_name = delim; |
3161 | ignore_rest_of_line (); | |
3162 | return; | |
3163 | } | |
3164 | ||
3165 | input_line_pointer++; | |
3166 | *end_name = 0; | |
3167 | ||
be95a9c1 | 3168 | assign_symbol (name, equiv); |
252b5132 | 3169 | *end_name = delim; |
31d20a21 AM |
3170 | |
3171 | demand_empty_rest_of_line (); | |
041ff4dd | 3172 | } |
252b5132 | 3173 | |
041ff4dd | 3174 | void |
39e6acbd | 3175 | s_space (int mult) |
252b5132 RH |
3176 | { |
3177 | expressionS exp; | |
3178 | expressionS val; | |
3179 | char *p = 0; | |
3180 | char *stop = NULL; | |
fb25138b | 3181 | char stopc = 0; |
252b5132 RH |
3182 | int bytes; |
3183 | ||
3184 | #ifdef md_flush_pending_output | |
3185 | md_flush_pending_output (); | |
3186 | #endif | |
3187 | ||
cc3f603a JM |
3188 | #ifdef md_cons_align |
3189 | md_cons_align (1); | |
3190 | #endif | |
3191 | ||
252b5132 RH |
3192 | if (flag_mri) |
3193 | stop = mri_comment_field (&stopc); | |
3194 | ||
3195 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
3196 | this is ds.b. */ | |
3197 | if (flag_m68k_mri && mult > 1) | |
3198 | { | |
3199 | if (now_seg == absolute_section) | |
3200 | { | |
3201 | abs_section_offset += abs_section_offset & 1; | |
3202 | if (line_label != NULL) | |
3203 | S_SET_VALUE (line_label, abs_section_offset); | |
3204 | } | |
3205 | else if (mri_common_symbol != NULL) | |
3206 | { | |
91d6fa6a | 3207 | valueT mri_val; |
252b5132 | 3208 | |
91d6fa6a NC |
3209 | mri_val = S_GET_VALUE (mri_common_symbol); |
3210 | if ((mri_val & 1) != 0) | |
252b5132 | 3211 | { |
91d6fa6a | 3212 | S_SET_VALUE (mri_common_symbol, mri_val + 1); |
252b5132 RH |
3213 | if (line_label != NULL) |
3214 | { | |
2b47531b ILT |
3215 | expressionS *symexp; |
3216 | ||
3217 | symexp = symbol_get_value_expression (line_label); | |
3218 | know (symexp->X_op == O_symbol); | |
3219 | know (symexp->X_add_symbol == mri_common_symbol); | |
3220 | symexp->X_add_number += 1; | |
252b5132 RH |
3221 | } |
3222 | } | |
3223 | } | |
3224 | else | |
3225 | { | |
3226 | do_align (1, (char *) NULL, 0, 0); | |
3227 | if (line_label != NULL) | |
3228 | { | |
2b47531b | 3229 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
3230 | S_SET_VALUE (line_label, frag_now_fix ()); |
3231 | } | |
3232 | } | |
3233 | } | |
3234 | ||
3235 | bytes = mult; | |
3236 | ||
3237 | expression (&exp); | |
3238 | ||
3239 | SKIP_WHITESPACE (); | |
3240 | if (*input_line_pointer == ',') | |
3241 | { | |
3242 | ++input_line_pointer; | |
3243 | expression (&val); | |
3244 | } | |
3245 | else | |
3246 | { | |
3247 | val.X_op = O_constant; | |
3248 | val.X_add_number = 0; | |
3249 | } | |
3250 | ||
3251 | if (val.X_op != O_constant | |
3252 | || val.X_add_number < - 0x80 | |
3253 | || val.X_add_number > 0xff | |
3254 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
3255 | { | |
9497f5ac | 3256 | resolve_expression (&exp); |
252b5132 | 3257 | if (exp.X_op != O_constant) |
0e389e77 | 3258 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
3259 | else |
3260 | { | |
3261 | offsetT i; | |
3262 | ||
3263 | if (mult == 0) | |
3264 | mult = 1; | |
3265 | bytes = mult * exp.X_add_number; | |
3266 | for (i = 0; i < exp.X_add_number; i++) | |
3267 | emit_expr (&val, mult); | |
3268 | } | |
3269 | } | |
3270 | else | |
3271 | { | |
9497f5ac NC |
3272 | if (now_seg == absolute_section || mri_common_symbol != NULL) |
3273 | resolve_expression (&exp); | |
3274 | ||
252b5132 RH |
3275 | if (exp.X_op == O_constant) |
3276 | { | |
a4a151e6 | 3277 | offsetT repeat; |
252b5132 RH |
3278 | |
3279 | repeat = exp.X_add_number; | |
3280 | if (mult) | |
3281 | repeat *= mult; | |
3282 | bytes = repeat; | |
3283 | if (repeat <= 0) | |
3284 | { | |
2d150871 RO |
3285 | if (!flag_mri) |
3286 | as_warn (_(".space repeat count is zero, ignored")); | |
3287 | else if (repeat < 0) | |
252b5132 RH |
3288 | as_warn (_(".space repeat count is negative, ignored")); |
3289 | goto getout; | |
3290 | } | |
3291 | ||
3292 | /* If we are in the absolute section, just bump the offset. */ | |
3293 | if (now_seg == absolute_section) | |
3294 | { | |
3295 | abs_section_offset += repeat; | |
3296 | goto getout; | |
3297 | } | |
3298 | ||
3299 | /* If we are secretly in an MRI common section, then | |
3300 | creating space just increases the size of the common | |
3301 | symbol. */ | |
3302 | if (mri_common_symbol != NULL) | |
3303 | { | |
3304 | S_SET_VALUE (mri_common_symbol, | |
3305 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3306 | goto getout; | |
3307 | } | |
3308 | ||
3309 | if (!need_pass_2) | |
3310 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
3311 | (offsetT) repeat, (char *) 0); | |
3312 | } | |
3313 | else | |
3314 | { | |
3315 | if (now_seg == absolute_section) | |
3316 | { | |
3317 | as_bad (_("space allocation too complex in absolute section")); | |
3318 | subseg_set (text_section, 0); | |
3319 | } | |
f0e652b4 | 3320 | |
252b5132 RH |
3321 | if (mri_common_symbol != NULL) |
3322 | { | |
3323 | as_bad (_("space allocation too complex in common section")); | |
3324 | mri_common_symbol = NULL; | |
3325 | } | |
f0e652b4 | 3326 | |
252b5132 RH |
3327 | if (!need_pass_2) |
3328 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3329 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3330 | } | |
3331 | ||
3332 | if (p) | |
3333 | *p = val.X_add_number; | |
3334 | } | |
3335 | ||
3336 | getout: | |
3337 | ||
3338 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3339 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3340 | or dcb.b. */ | |
3341 | if (flag_mri && (bytes & 1) != 0) | |
3342 | mri_pending_align = 1; | |
3343 | ||
3344 | demand_empty_rest_of_line (); | |
3345 | ||
3346 | if (flag_mri) | |
3347 | mri_comment_end (stop, stopc); | |
3348 | } | |
3349 | ||
3350 | /* This is like s_space, but the value is a floating point number with | |
3351 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3352 | friends. */ | |
3353 | ||
3354 | void | |
39e6acbd | 3355 | s_float_space (int float_type) |
252b5132 RH |
3356 | { |
3357 | offsetT count; | |
3358 | int flen; | |
3359 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3360 | char *stop = NULL; | |
fb25138b | 3361 | char stopc = 0; |
252b5132 | 3362 | |
cc3f603a JM |
3363 | #ifdef md_cons_align |
3364 | md_cons_align (1); | |
3365 | #endif | |
3366 | ||
252b5132 RH |
3367 | if (flag_mri) |
3368 | stop = mri_comment_field (&stopc); | |
3369 | ||
3370 | count = get_absolute_expression (); | |
3371 | ||
3372 | SKIP_WHITESPACE (); | |
3373 | if (*input_line_pointer != ',') | |
3374 | { | |
3375 | as_bad (_("missing value")); | |
3376 | ignore_rest_of_line (); | |
3377 | if (flag_mri) | |
3378 | mri_comment_end (stop, stopc); | |
3379 | return; | |
3380 | } | |
3381 | ||
3382 | ++input_line_pointer; | |
3383 | ||
3384 | SKIP_WHITESPACE (); | |
3385 | ||
3386 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3387 | * letter is legal. */ | |
3388 | if (input_line_pointer[0] == '0' | |
3882b010 | 3389 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3390 | input_line_pointer += 2; |
3391 | ||
3392 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3393 | with the exact digits specified. */ | |
3394 | if (input_line_pointer[0] == ':') | |
3395 | { | |
3396 | flen = hex_float (float_type, temp); | |
3397 | if (flen < 0) | |
3398 | { | |
3399 | ignore_rest_of_line (); | |
3400 | if (flag_mri) | |
3401 | mri_comment_end (stop, stopc); | |
3402 | return; | |
3403 | } | |
3404 | } | |
3405 | else | |
3406 | { | |
3407 | char *err; | |
3408 | ||
3409 | err = md_atof (float_type, temp, &flen); | |
3410 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 3411 | know (err != NULL || flen > 0); |
252b5132 RH |
3412 | if (err) |
3413 | { | |
0e389e77 | 3414 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3415 | ignore_rest_of_line (); |
3416 | if (flag_mri) | |
3417 | mri_comment_end (stop, stopc); | |
3418 | return; | |
3419 | } | |
3420 | } | |
3421 | ||
3422 | while (--count >= 0) | |
3423 | { | |
3424 | char *p; | |
3425 | ||
3426 | p = frag_more (flen); | |
3427 | memcpy (p, temp, (unsigned int) flen); | |
3428 | } | |
3429 | ||
3430 | demand_empty_rest_of_line (); | |
3431 | ||
3432 | if (flag_mri) | |
3433 | mri_comment_end (stop, stopc); | |
3434 | } | |
3435 | ||
3436 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3437 | ||
3438 | void | |
39e6acbd | 3439 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3440 | { |
3441 | char *stop = NULL; | |
fb25138b | 3442 | char stopc = 0; |
252b5132 RH |
3443 | |
3444 | if (flag_mri) | |
3445 | stop = mri_comment_field (&stopc); | |
3446 | abs_section_offset = get_absolute_expression (); | |
a2902af6 TS |
3447 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
3448 | /* The ELF backend needs to know that we are changing sections, so | |
3449 | that .previous works correctly. */ | |
f43abd2b | 3450 | if (IS_ELF) |
a2902af6 TS |
3451 | obj_elf_section_change_hook (); |
3452 | #endif | |
252b5132 RH |
3453 | subseg_set (absolute_section, 0); |
3454 | demand_empty_rest_of_line (); | |
3455 | if (flag_mri) | |
3456 | mri_comment_end (stop, stopc); | |
3457 | } | |
3458 | ||
3459 | void | |
39e6acbd | 3460 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 3461 | { |
3d540e93 | 3462 | int temp; |
252b5132 RH |
3463 | |
3464 | temp = get_absolute_expression (); | |
3465 | subseg_set (text_section, (subsegT) temp); | |
3466 | demand_empty_rest_of_line (); | |
3467 | #ifdef OBJ_VMS | |
3468 | const_flag &= ~IN_DEFAULT_SECTION; | |
3469 | #endif | |
041ff4dd | 3470 | } |
06e77878 AO |
3471 | |
3472 | /* .weakref x, y sets x as an alias to y that, as long as y is not | |
3473 | referenced directly, will cause y to become a weak symbol. */ | |
3474 | void | |
3475 | s_weakref (int ignore ATTRIBUTE_UNUSED) | |
3476 | { | |
3477 | char *name; | |
3478 | char delim; | |
3479 | char *end_name; | |
3480 | symbolS *symbolP; | |
3481 | symbolS *symbolP2; | |
3482 | expressionS exp; | |
3483 | ||
3484 | name = input_line_pointer; | |
3485 | delim = get_symbol_end (); | |
3486 | end_name = input_line_pointer; | |
3487 | ||
3488 | if (name == end_name) | |
3489 | { | |
3490 | as_bad (_("expected symbol name")); | |
3491 | *end_name = delim; | |
3492 | ignore_rest_of_line (); | |
3493 | return; | |
3494 | } | |
3495 | ||
3496 | symbolP = symbol_find_or_make (name); | |
3497 | ||
b54788f8 AO |
3498 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) |
3499 | { | |
89cdfe57 | 3500 | if (!S_IS_VOLATILE (symbolP)) |
92757bc9 JB |
3501 | { |
3502 | as_bad (_("symbol `%s' is already defined"), name); | |
3503 | *end_name = delim; | |
3504 | ignore_rest_of_line (); | |
3505 | return; | |
3506 | } | |
89cdfe57 | 3507 | symbolP = symbol_clone (symbolP, 1); |
92757bc9 | 3508 | S_CLEAR_VOLATILE (symbolP); |
b54788f8 AO |
3509 | } |
3510 | ||
06e77878 AO |
3511 | *end_name = delim; |
3512 | ||
3513 | SKIP_WHITESPACE (); | |
3514 | ||
3515 | if (*input_line_pointer != ',') | |
3516 | { | |
3517 | *end_name = 0; | |
3518 | as_bad (_("expected comma after \"%s\""), name); | |
3519 | *end_name = delim; | |
3520 | ignore_rest_of_line (); | |
3521 | return; | |
3522 | } | |
3523 | ||
3524 | input_line_pointer++; | |
3525 | ||
3526 | SKIP_WHITESPACE (); | |
3527 | ||
3528 | name = input_line_pointer; | |
3529 | delim = get_symbol_end (); | |
3530 | end_name = input_line_pointer; | |
3531 | ||
3532 | if (name == end_name) | |
3533 | { | |
3534 | as_bad (_("expected symbol name")); | |
3535 | ignore_rest_of_line (); | |
3536 | return; | |
3537 | } | |
3538 | ||
3539 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL | |
3540 | && (symbolP2 = md_undefined_symbol (name)) == NULL) | |
3541 | { | |
3542 | symbolP2 = symbol_find_or_make (name); | |
3543 | S_SET_WEAKREFD (symbolP2); | |
3544 | } | |
3545 | else | |
3546 | { | |
3547 | symbolS *symp = symbolP2; | |
3548 | ||
3549 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | |
3550 | { | |
3551 | expressionS *expP = symbol_get_value_expression (symp); | |
3552 | ||
9c2799c2 | 3553 | gas_assert (expP->X_op == O_symbol |
06e77878 AO |
3554 | && expP->X_add_number == 0); |
3555 | symp = expP->X_add_symbol; | |
3556 | } | |
3557 | if (symp == symbolP) | |
3558 | { | |
3559 | char *loop; | |
3560 | ||
3561 | loop = concat (S_GET_NAME (symbolP), | |
1bf57e9f | 3562 | " => ", S_GET_NAME (symbolP2), (const char *) NULL); |
06e77878 AO |
3563 | |
3564 | symp = symbolP2; | |
3565 | while (symp != symbolP) | |
3566 | { | |
3567 | char *old_loop = loop; | |
3568 | symp = symbol_get_value_expression (symp)->X_add_symbol; | |
1bf57e9f AM |
3569 | loop = concat (loop, " => ", S_GET_NAME (symp), |
3570 | (const char *) NULL); | |
06e77878 AO |
3571 | free (old_loop); |
3572 | } | |
3573 | ||
3574 | as_bad (_("%s: would close weakref loop: %s"), | |
3575 | S_GET_NAME (symbolP), loop); | |
3576 | ||
3577 | free (loop); | |
3578 | ||
3579 | *end_name = delim; | |
3580 | ignore_rest_of_line (); | |
3581 | return; | |
3582 | } | |
3583 | ||
3584 | /* Short-circuiting instead of just checking here might speed | |
3585 | things up a tiny little bit, but loop error messages would | |
3586 | miss intermediate links. */ | |
3587 | /* symbolP2 = symp; */ | |
3588 | } | |
3589 | ||
3590 | *end_name = delim; | |
3591 | ||
3592 | memset (&exp, 0, sizeof (exp)); | |
3593 | exp.X_op = O_symbol; | |
3594 | exp.X_add_symbol = symbolP2; | |
3595 | ||
3596 | S_SET_SEGMENT (symbolP, undefined_section); | |
3597 | symbol_set_value_expression (symbolP, &exp); | |
3598 | symbol_set_frag (symbolP, &zero_address_frag); | |
3599 | S_SET_WEAKREFR (symbolP); | |
3600 | ||
3601 | demand_empty_rest_of_line (); | |
3602 | } | |
252b5132 | 3603 | \f |
c95b35a9 NS |
3604 | |
3605 | /* Verify that we are at the end of a line. If not, issue an error and | |
3606 | skip to EOL. */ | |
3607 | ||
041ff4dd | 3608 | void |
39e6acbd | 3609 | demand_empty_rest_of_line (void) |
252b5132 RH |
3610 | { |
3611 | SKIP_WHITESPACE (); | |
3612 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3613 | input_line_pointer++; |
252b5132 | 3614 | else |
252b5132 | 3615 | { |
3882b010 | 3616 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3617 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3618 | *input_line_pointer); |
252b5132 | 3619 | else |
c95b35a9 | 3620 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3621 | *input_line_pointer); |
c95b35a9 | 3622 | ignore_rest_of_line (); |
252b5132 | 3623 | } |
c95b35a9 NS |
3624 | |
3625 | /* Return pointing just after end-of-line. */ | |
3626 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3627 | } | |
3628 | ||
3629 | /* Silently advance to the end of line. Use this after already having | |
3630 | issued an error about something bad. */ | |
3631 | ||
3632 | void | |
3633 | ignore_rest_of_line (void) | |
3634 | { | |
3635 | while (input_line_pointer < buffer_limit | |
3636 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3637 | input_line_pointer++; | |
f0e652b4 | 3638 | |
041ff4dd NC |
3639 | input_line_pointer++; |
3640 | ||
3641 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3642 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3643 | } | |
3644 | ||
be95a9c1 AM |
3645 | /* Sets frag for given symbol to zero_address_frag, except when the |
3646 | symbol frag is already set to a dummy listing frag. */ | |
3647 | ||
3648 | static void | |
3649 | set_zero_frag (symbolS *symbolP) | |
3650 | { | |
3651 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | |
3652 | symbol_set_frag (symbolP, &zero_address_frag); | |
3653 | } | |
3654 | ||
041ff4dd | 3655 | /* In: Pointer to a symbol. |
d6415f6c | 3656 | Input_line_pointer->expression. |
f0e652b4 | 3657 | |
041ff4dd | 3658 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3659 | Tried to set symbol to value of expression. |
3660 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3661 | |
252b5132 | 3662 | void |
39e6acbd | 3663 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3664 | { |
3665 | expressionS exp; | |
be95a9c1 | 3666 | segT seg; |
252b5132 | 3667 | |
041ff4dd | 3668 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 | 3669 | |
9497f5ac NC |
3670 | if (!S_IS_FORWARD_REF (symbolP)) |
3671 | (void) expression (&exp); | |
3672 | else | |
3673 | (void) deferred_expression (&exp); | |
252b5132 RH |
3674 | |
3675 | if (exp.X_op == O_illegal) | |
0e389e77 | 3676 | as_bad (_("illegal expression")); |
252b5132 | 3677 | else if (exp.X_op == O_absent) |
0e389e77 | 3678 | as_bad (_("missing expression")); |
252b5132 RH |
3679 | else if (exp.X_op == O_big) |
3680 | { | |
3681 | if (exp.X_add_number > 0) | |
0e389e77 | 3682 | as_bad (_("bignum invalid")); |
252b5132 | 3683 | else |
0e389e77 | 3684 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3685 | } |
3686 | else if (exp.X_op == O_subtract | |
9497f5ac | 3687 | && !S_IS_FORWARD_REF (symbolP) |
252b5132 | 3688 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3689 | && (symbol_get_frag (exp.X_add_symbol) |
3690 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3691 | { |
3692 | exp.X_op = O_constant; | |
3693 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3694 | - S_GET_VALUE (exp.X_op_symbol)); | |
3695 | } | |
3696 | ||
be95a9c1 AM |
3697 | if (symbol_section_p (symbolP)) |
3698 | { | |
3699 | as_bad ("attempt to set value of section symbol"); | |
3700 | return; | |
3701 | } | |
be95a9c1 | 3702 | |
252b5132 RH |
3703 | switch (exp.X_op) |
3704 | { | |
3705 | case O_illegal: | |
3706 | case O_absent: | |
3707 | case O_big: | |
3708 | exp.X_add_number = 0; | |
3709 | /* Fall through. */ | |
3710 | case O_constant: | |
3711 | S_SET_SEGMENT (symbolP, absolute_section); | |
252b5132 | 3712 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
be95a9c1 | 3713 | set_zero_frag (symbolP); |
252b5132 RH |
3714 | break; |
3715 | ||
3716 | case O_register: | |
97c4f2d9 | 3717 | #ifndef TC_GLOBAL_REGISTER_SYMBOL_OK |
d0548f34 L |
3718 | if (S_IS_EXTERNAL (symbolP)) |
3719 | { | |
3720 | as_bad ("can't equate global symbol `%s' with register name", | |
3721 | S_GET_NAME (symbolP)); | |
3722 | return; | |
3723 | } | |
97c4f2d9 | 3724 | #endif |
252b5132 RH |
3725 | S_SET_SEGMENT (symbolP, reg_section); |
3726 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
be95a9c1 | 3727 | set_zero_frag (symbolP); |
db557034 | 3728 | symbol_get_value_expression (symbolP)->X_op = O_register; |
252b5132 RH |
3729 | break; |
3730 | ||
3731 | case O_symbol: | |
be95a9c1 AM |
3732 | seg = S_GET_SEGMENT (exp.X_add_symbol); |
3733 | /* For x=undef+const, create an expression symbol. | |
3734 | For x=x+const, just update x except when x is an undefined symbol | |
3735 | For x=defined+const, evaluate x. */ | |
3736 | if (symbolP == exp.X_add_symbol | |
3737 | && (seg != undefined_section | |
3738 | || !symbol_constant_p (symbolP))) | |
3739 | { | |
3740 | *symbol_X_add_number (symbolP) += exp.X_add_number; | |
3741 | break; | |
3742 | } | |
9497f5ac | 3743 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section) |
252b5132 RH |
3744 | { |
3745 | symbolS *s = exp.X_add_symbol; | |
3746 | ||
60938e80 L |
3747 | if (S_IS_COMMON (s)) |
3748 | as_bad (_("`%s' can't be equated to common symbol '%s'"), | |
3749 | S_GET_NAME (symbolP), S_GET_NAME (s)); | |
3750 | ||
be95a9c1 AM |
3751 | S_SET_SEGMENT (symbolP, seg); |
3752 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3753 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 | 3754 | copy_symbol_attributes (symbolP, s); |
be95a9c1 | 3755 | break; |
252b5132 | 3756 | } |
66bd02d3 AM |
3757 | S_SET_SEGMENT (symbolP, undefined_section); |
3758 | symbol_set_value_expression (symbolP, &exp); | |
f08e1e19 | 3759 | copy_symbol_attributes (symbolP, exp.X_add_symbol); |
66bd02d3 AM |
3760 | set_zero_frag (symbolP); |
3761 | break; | |
252b5132 RH |
3762 | |
3763 | default: | |
aba4aa7d AM |
3764 | /* The value is some complex expression. */ |
3765 | S_SET_SEGMENT (symbolP, expr_section); | |
2b47531b | 3766 | symbol_set_value_expression (symbolP, &exp); |
be95a9c1 | 3767 | set_zero_frag (symbolP); |
252b5132 RH |
3768 | break; |
3769 | } | |
3770 | } | |
3771 | \f | |
d6415f6c | 3772 | /* cons() |
f0e652b4 | 3773 | |
041ff4dd NC |
3774 | CONStruct more frag of .bytes, or .words etc. |
3775 | Should need_pass_2 be 1 then emit no frag(s). | |
3776 | This understands EXPRESSIONS. | |
f0e652b4 | 3777 | |
041ff4dd | 3778 | Bug (?) |
f0e652b4 | 3779 | |
041ff4dd NC |
3780 | This has a split personality. We use expression() to read the |
3781 | value. We can detect if the value won't fit in a byte or word. | |
3782 | But we can't detect if expression() discarded significant digits | |
3783 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3784 | |
3785 | /* Select a parser for cons expressions. */ | |
3786 | ||
3787 | /* Some targets need to parse the expression in various fancy ways. | |
3788 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3789 | (for example, the HPPA does this). Otherwise, you can define | |
3790 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3791 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3792 | are defined, which is the normal case, then only simple expressions | |
3793 | are permitted. */ | |
3794 | ||
abd63a32 | 3795 | #ifdef TC_M68K |
252b5132 | 3796 | static void |
39e6acbd | 3797 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3798 | #endif |
252b5132 RH |
3799 | |
3800 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3801 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3802 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3803 | static void |
39e6acbd | 3804 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3805 | #endif |
3806 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3807 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3808 | static void | |
39e6acbd | 3809 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3810 | #endif |
3811 | ||
3812 | /* If we haven't gotten one yet, just call expression. */ | |
3813 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3814 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3815 | #endif | |
3816 | #endif | |
3817 | ||
cdfbf930 | 3818 | void |
b41b1f95 L |
3819 | do_parse_cons_expression (expressionS *exp, |
3820 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3821 | { |
3822 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3823 | } | |
3824 | ||
3825 | ||
041ff4dd NC |
3826 | /* Worker to do .byte etc statements. |
3827 | Clobbers input_line_pointer and checks end-of-line. */ | |
3828 | ||
3829 | static void | |
3d540e93 | 3830 | cons_worker (int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
39e6acbd | 3831 | int rva) |
252b5132 RH |
3832 | { |
3833 | int c; | |
3834 | expressionS exp; | |
3835 | char *stop = NULL; | |
fb25138b | 3836 | char stopc = 0; |
252b5132 RH |
3837 | |
3838 | #ifdef md_flush_pending_output | |
3839 | md_flush_pending_output (); | |
3840 | #endif | |
3841 | ||
3842 | if (flag_mri) | |
3843 | stop = mri_comment_field (&stopc); | |
3844 | ||
3845 | if (is_it_end_of_statement ()) | |
3846 | { | |
3847 | demand_empty_rest_of_line (); | |
3848 | if (flag_mri) | |
3849 | mri_comment_end (stop, stopc); | |
3850 | return; | |
3851 | } | |
3852 | ||
cc1bc22a AM |
3853 | #ifdef TC_ADDRESS_BYTES |
3854 | if (nbytes == 0) | |
3855 | nbytes = TC_ADDRESS_BYTES (); | |
3856 | #endif | |
3857 | ||
252b5132 RH |
3858 | #ifdef md_cons_align |
3859 | md_cons_align (nbytes); | |
3860 | #endif | |
3861 | ||
3862 | c = 0; | |
3863 | do | |
3864 | { | |
abd63a32 | 3865 | #ifdef TC_M68K |
252b5132 RH |
3866 | if (flag_m68k_mri) |
3867 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3868 | else | |
abd63a32 | 3869 | #endif |
847d4311 NS |
3870 | { |
3871 | if (*input_line_pointer == '"') | |
3872 | { | |
3873 | as_bad (_("unexpected `\"' in expression")); | |
3874 | ignore_rest_of_line (); | |
3875 | return; | |
3876 | } | |
3877 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); | |
3878 | } | |
252b5132 RH |
3879 | |
3880 | if (rva) | |
3881 | { | |
3882 | if (exp.X_op == O_symbol) | |
3883 | exp.X_op = O_symbol_rva; | |
3884 | else | |
3885 | as_fatal (_("rva without symbol")); | |
3886 | } | |
3887 | emit_expr (&exp, (unsigned int) nbytes); | |
3888 | ++c; | |
3889 | } | |
3890 | while (*input_line_pointer++ == ','); | |
3891 | ||
3892 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3893 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3894 | or dcb.b. */ | |
3895 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3896 | mri_pending_align = 1; | |
3897 | ||
041ff4dd | 3898 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3899 | |
3900 | demand_empty_rest_of_line (); | |
3901 | ||
3902 | if (flag_mri) | |
3903 | mri_comment_end (stop, stopc); | |
3904 | } | |
3905 | ||
252b5132 | 3906 | void |
39e6acbd | 3907 | cons (int size) |
252b5132 RH |
3908 | { |
3909 | cons_worker (size, 0); | |
3910 | } | |
3911 | ||
041ff4dd | 3912 | void |
39e6acbd | 3913 | s_rva (int size) |
252b5132 RH |
3914 | { |
3915 | cons_worker (size, 1); | |
3916 | } | |
3917 | ||
05e9452c AM |
3918 | /* .reloc offset, reloc_name, symbol+addend. */ |
3919 | ||
3920 | void | |
3921 | s_reloc (int ignore ATTRIBUTE_UNUSED) | |
3922 | { | |
3923 | char *stop = NULL; | |
3924 | char stopc = 0; | |
3925 | expressionS exp; | |
3926 | char *r_name; | |
3927 | int c; | |
3928 | struct reloc_list *reloc; | |
3929 | ||
1e9cc1c2 | 3930 | reloc = (struct reloc_list *) xmalloc (sizeof (*reloc)); |
05e9452c AM |
3931 | |
3932 | if (flag_mri) | |
3933 | stop = mri_comment_field (&stopc); | |
3934 | ||
3935 | expression (&exp); | |
3936 | switch (exp.X_op) | |
3937 | { | |
3938 | case O_illegal: | |
3939 | case O_absent: | |
3940 | case O_big: | |
3941 | case O_register: | |
3942 | as_bad (_("missing or bad offset expression")); | |
3943 | goto err_out; | |
3944 | case O_constant: | |
3945 | exp.X_add_symbol = section_symbol (now_seg); | |
3946 | exp.X_op = O_symbol; | |
3947 | /* Fall thru */ | |
3948 | case O_symbol: | |
3949 | if (exp.X_add_number == 0) | |
3950 | { | |
3951 | reloc->u.a.offset_sym = exp.X_add_symbol; | |
3952 | break; | |
3953 | } | |
3954 | /* Fall thru */ | |
3955 | default: | |
3956 | reloc->u.a.offset_sym = make_expr_symbol (&exp); | |
3957 | break; | |
3958 | } | |
3959 | ||
3960 | SKIP_WHITESPACE (); | |
3961 | if (*input_line_pointer != ',') | |
3962 | { | |
3963 | as_bad (_("missing reloc type")); | |
3964 | goto err_out; | |
3965 | } | |
3966 | ||
3967 | ++input_line_pointer; | |
3968 | SKIP_WHITESPACE (); | |
3969 | r_name = input_line_pointer; | |
3970 | c = get_symbol_end (); | |
3971 | reloc->u.a.howto = bfd_reloc_name_lookup (stdoutput, r_name); | |
3972 | *input_line_pointer = c; | |
3973 | if (reloc->u.a.howto == NULL) | |
3974 | { | |
3975 | as_bad (_("unrecognized reloc type")); | |
3976 | goto err_out; | |
3977 | } | |
3978 | ||
3979 | exp.X_op = O_absent; | |
3980 | SKIP_WHITESPACE (); | |
3981 | if (*input_line_pointer == ',') | |
3982 | { | |
3983 | ++input_line_pointer; | |
c188d0bb | 3984 | expression (&exp); |
05e9452c AM |
3985 | } |
3986 | switch (exp.X_op) | |
3987 | { | |
3988 | case O_illegal: | |
3989 | case O_big: | |
3990 | case O_register: | |
3991 | as_bad (_("bad reloc expression")); | |
3992 | err_out: | |
3993 | ignore_rest_of_line (); | |
3994 | free (reloc); | |
3995 | if (flag_mri) | |
3996 | mri_comment_end (stop, stopc); | |
3997 | return; | |
3998 | case O_absent: | |
3999 | reloc->u.a.sym = NULL; | |
4000 | reloc->u.a.addend = 0; | |
4001 | break; | |
4002 | case O_constant: | |
4003 | reloc->u.a.sym = NULL; | |
4004 | reloc->u.a.addend = exp.X_add_number; | |
4005 | break; | |
4006 | case O_symbol: | |
4007 | reloc->u.a.sym = exp.X_add_symbol; | |
4008 | reloc->u.a.addend = exp.X_add_number; | |
4009 | break; | |
4010 | default: | |
4011 | reloc->u.a.sym = make_expr_symbol (&exp); | |
4012 | reloc->u.a.addend = 0; | |
4013 | break; | |
4014 | } | |
4015 | ||
4016 | as_where (&reloc->file, &reloc->line); | |
4017 | reloc->next = reloc_list; | |
4018 | reloc_list = reloc; | |
4019 | ||
4020 | demand_empty_rest_of_line (); | |
4021 | if (flag_mri) | |
4022 | mri_comment_end (stop, stopc); | |
4023 | } | |
4024 | ||
252b5132 RH |
4025 | /* Put the contents of expression EXP into the object file using |
4026 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
4027 | ||
4028 | void | |
39e6acbd | 4029 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
4030 | { |
4031 | operatorT op; | |
3d540e93 | 4032 | char *p; |
252b5132 RH |
4033 | valueT extra_digit = 0; |
4034 | ||
4035 | /* Don't do anything if we are going to make another pass. */ | |
4036 | if (need_pass_2) | |
4037 | return; | |
4038 | ||
4bc25101 NC |
4039 | /* Grow the current frag now so that dot_value does not get invalidated |
4040 | if the frag were to fill up in the frag_more() call below. */ | |
4041 | frag_grow (nbytes); | |
ed7d5d1a AM |
4042 | dot_value = frag_now_fix (); |
4043 | ||
252b5132 RH |
4044 | #ifndef NO_LISTING |
4045 | #ifdef OBJ_ELF | |
4046 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
4047 | appear as a four byte positive constant in the .line section, | |
4048 | followed by a 2 byte 0xffff. Look for that case here. */ | |
4049 | { | |
4050 | static int dwarf_line = -1; | |
4051 | ||
4052 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
4053 | dwarf_line = -1; | |
4054 | else if (dwarf_line >= 0 | |
4055 | && nbytes == 2 | |
4056 | && exp->X_op == O_constant | |
4057 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
4058 | listing_source_line ((unsigned int) dwarf_line); | |
4059 | else if (nbytes == 4 | |
4060 | && exp->X_op == O_constant | |
4061 | && exp->X_add_number >= 0) | |
4062 | dwarf_line = exp->X_add_number; | |
4063 | else | |
4064 | dwarf_line = -1; | |
4065 | } | |
4066 | ||
4067 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
4068 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
4069 | AT_sibling (0x12) followed by a four byte address of the sibling | |
4070 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
4071 | file. We look for that case here. */ | |
4072 | { | |
4073 | static int dwarf_file = 0; | |
4074 | ||
4075 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4076 | dwarf_file = 0; | |
4077 | else if (dwarf_file == 0 | |
4078 | && nbytes == 2 | |
4079 | && exp->X_op == O_constant | |
4080 | && exp->X_add_number == 0x11) | |
4081 | dwarf_file = 1; | |
4082 | else if (dwarf_file == 1 | |
4083 | && nbytes == 2 | |
4084 | && exp->X_op == O_constant | |
4085 | && exp->X_add_number == 0x12) | |
4086 | dwarf_file = 2; | |
4087 | else if (dwarf_file == 2 | |
4088 | && nbytes == 4) | |
4089 | dwarf_file = 3; | |
4090 | else if (dwarf_file == 3 | |
4091 | && nbytes == 2 | |
4092 | && exp->X_op == O_constant | |
4093 | && exp->X_add_number == 0x38) | |
4094 | dwarf_file = 4; | |
4095 | else | |
4096 | dwarf_file = 0; | |
4097 | ||
4098 | /* The variable dwarf_file_string tells stringer that the string | |
4099 | may be the name of the source file. */ | |
4100 | if (dwarf_file == 4) | |
4101 | dwarf_file_string = 1; | |
4102 | else | |
4103 | dwarf_file_string = 0; | |
4104 | } | |
4105 | #endif | |
4106 | #endif | |
4107 | ||
4108 | if (check_eh_frame (exp, &nbytes)) | |
4109 | return; | |
4110 | ||
4111 | op = exp->X_op; | |
4112 | ||
4113 | /* Allow `.word 0' in the absolute section. */ | |
4114 | if (now_seg == absolute_section) | |
4115 | { | |
4116 | if (op != O_constant || exp->X_add_number != 0) | |
4117 | as_bad (_("attempt to store value in absolute section")); | |
4118 | abs_section_offset += nbytes; | |
4119 | return; | |
4120 | } | |
4121 | ||
4122 | /* Handle a negative bignum. */ | |
4123 | if (op == O_uminus | |
4124 | && exp->X_add_number == 0 | |
2b47531b ILT |
4125 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
4126 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
4127 | { |
4128 | int i; | |
4129 | unsigned long carry; | |
4130 | ||
2b47531b | 4131 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
4132 | |
4133 | /* Negate the bignum: one's complement each digit and add 1. */ | |
4134 | carry = 1; | |
4135 | for (i = 0; i < exp->X_add_number; i++) | |
4136 | { | |
4137 | unsigned long next; | |
4138 | ||
041ff4dd | 4139 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
4140 | & LITTLENUM_MASK) |
4141 | + carry); | |
4142 | generic_bignum[i] = next & LITTLENUM_MASK; | |
4143 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
4144 | } | |
4145 | ||
4146 | /* We can ignore any carry out, because it will be handled by | |
4147 | extra_digit if it is needed. */ | |
4148 | ||
4149 | extra_digit = (valueT) -1; | |
4150 | op = O_big; | |
4151 | } | |
4152 | ||
4153 | if (op == O_absent || op == O_illegal) | |
4154 | { | |
4155 | as_warn (_("zero assumed for missing expression")); | |
4156 | exp->X_add_number = 0; | |
4157 | op = O_constant; | |
4158 | } | |
4159 | else if (op == O_big && exp->X_add_number <= 0) | |
4160 | { | |
0e389e77 | 4161 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4162 | exp->X_add_number = 0; |
4163 | op = O_constant; | |
4164 | } | |
4165 | else if (op == O_register) | |
4166 | { | |
4167 | as_warn (_("register value used as expression")); | |
4168 | op = O_constant; | |
4169 | } | |
4170 | ||
4171 | p = frag_more ((int) nbytes); | |
4172 | ||
4173 | #ifndef WORKING_DOT_WORD | |
4174 | /* If we have the difference of two symbols in a word, save it on | |
4175 | the broken_words list. See the code in write.c. */ | |
4176 | if (op == O_subtract && nbytes == 2) | |
4177 | { | |
4178 | struct broken_word *x; | |
4179 | ||
4180 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
4181 | x->next_broken_word = broken_words; | |
4182 | broken_words = x; | |
4183 | x->seg = now_seg; | |
4184 | x->subseg = now_subseg; | |
4185 | x->frag = frag_now; | |
4186 | x->word_goes_here = p; | |
4187 | x->dispfrag = 0; | |
4188 | x->add = exp->X_add_symbol; | |
4189 | x->sub = exp->X_op_symbol; | |
4190 | x->addnum = exp->X_add_number; | |
4191 | x->added = 0; | |
dc59a897 | 4192 | x->use_jump = 0; |
252b5132 RH |
4193 | new_broken_words++; |
4194 | return; | |
4195 | } | |
4196 | #endif | |
4197 | ||
4198 | /* If we have an integer, but the number of bytes is too large to | |
4199 | pass to md_number_to_chars, handle it as a bignum. */ | |
4200 | if (op == O_constant && nbytes > sizeof (valueT)) | |
4201 | { | |
e5604d79 RS |
4202 | extra_digit = exp->X_unsigned ? 0 : -1; |
4203 | convert_to_bignum (exp); | |
4204 | op = O_big; | |
252b5132 RH |
4205 | } |
4206 | ||
4207 | if (op == O_constant) | |
4208 | { | |
3d540e93 NC |
4209 | valueT get; |
4210 | valueT use; | |
4211 | valueT mask; | |
252b5132 | 4212 | valueT hibit; |
3d540e93 | 4213 | valueT unmask; |
252b5132 RH |
4214 | |
4215 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 4216 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
4217 | if (nbytes >= sizeof (valueT)) |
4218 | { | |
4219 | mask = 0; | |
4220 | if (nbytes > sizeof (valueT)) | |
4221 | hibit = 0; | |
4222 | else | |
4223 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4224 | } | |
4225 | else | |
4226 | { | |
041ff4dd | 4227 | /* Don't store these bits. */ |
252b5132 RH |
4228 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
4229 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
4230 | } | |
4231 | ||
041ff4dd | 4232 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
4233 | |
4234 | #ifdef NEVER | |
4235 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 4236 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
4237 | #endif |
4238 | ||
4239 | get = exp->X_add_number; | |
4240 | use = get & unmask; | |
4241 | if ((get & mask) != 0 | |
4242 | && ((get & mask) != mask | |
4243 | || (get & hibit) == 0)) | |
041ff4dd | 4244 | { /* Leading bits contain both 0s & 1s. */ |
b6ac5419 | 4245 | #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG |
6e3d6dc1 | 4246 | #ifndef __MSVCRT__ |
5c612369 NC |
4247 | as_warn (_("value 0x%llx truncated to 0x%llx"), |
4248 | (unsigned long long) get, (unsigned long long) use); | |
6e3d6dc1 NC |
4249 | #else |
4250 | as_warn (_("value 0x%I64x truncated to 0x%I64x"), | |
4251 | (unsigned long long) get, (unsigned long long) use); | |
4252 | #endif | |
b6ac5419 AM |
4253 | #else |
4254 | as_warn (_("value 0x%lx truncated to 0x%lx"), | |
4255 | (unsigned long) get, (unsigned long) use); | |
4256 | #endif | |
252b5132 | 4257 | } |
041ff4dd | 4258 | /* Put bytes in right order. */ |
252b5132 RH |
4259 | md_number_to_chars (p, use, (int) nbytes); |
4260 | } | |
4261 | else if (op == O_big) | |
4262 | { | |
4263 | unsigned int size; | |
4264 | LITTLENUM_TYPE *nums; | |
4265 | ||
4266 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
4267 | ||
4268 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
4269 | if (nbytes < size) | |
4270 | { | |
0e389e77 | 4271 | as_warn (_("bignum truncated to %d bytes"), nbytes); |
252b5132 RH |
4272 | size = nbytes; |
4273 | } | |
4274 | ||
4275 | if (target_big_endian) | |
4276 | { | |
4277 | while (nbytes > size) | |
4278 | { | |
4279 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4280 | nbytes -= CHARS_PER_LITTLENUM; | |
4281 | p += CHARS_PER_LITTLENUM; | |
4282 | } | |
4283 | ||
4284 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 4285 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4286 | { |
4287 | --nums; | |
4288 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4289 | size -= CHARS_PER_LITTLENUM; | |
4290 | p += CHARS_PER_LITTLENUM; | |
4291 | } | |
4292 | } | |
4293 | else | |
4294 | { | |
4295 | nums = generic_bignum; | |
ceac3f62 | 4296 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4297 | { |
4298 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
4299 | ++nums; | |
4300 | size -= CHARS_PER_LITTLENUM; | |
4301 | p += CHARS_PER_LITTLENUM; | |
4302 | nbytes -= CHARS_PER_LITTLENUM; | |
4303 | } | |
4304 | ||
ceac3f62 | 4305 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
4306 | { |
4307 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
4308 | nbytes -= CHARS_PER_LITTLENUM; | |
4309 | p += CHARS_PER_LITTLENUM; | |
4310 | } | |
4311 | } | |
4312 | } | |
4313 | else | |
7ddd14de BW |
4314 | emit_expr_fix (exp, nbytes, frag_now, p); |
4315 | } | |
4316 | ||
4317 | void | |
4318 | emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p) | |
4319 | { | |
4320 | memset (p, 0, nbytes); | |
252b5132 | 4321 | |
7ddd14de | 4322 | /* Generate a fixS to record the symbol value. */ |
252b5132 | 4323 | |
252b5132 | 4324 | #ifdef TC_CONS_FIX_NEW |
7ddd14de | 4325 | TC_CONS_FIX_NEW (frag, p - frag->fr_literal, nbytes, exp); |
252b5132 | 4326 | #else |
7ddd14de BW |
4327 | { |
4328 | bfd_reloc_code_real_type r; | |
252b5132 | 4329 | |
7ddd14de BW |
4330 | switch (nbytes) |
4331 | { | |
4332 | case 1: | |
4333 | r = BFD_RELOC_8; | |
4334 | break; | |
4335 | case 2: | |
4336 | r = BFD_RELOC_16; | |
4337 | break; | |
d4f4f3fb AM |
4338 | case 3: |
4339 | r = BFD_RELOC_24; | |
4340 | break; | |
7ddd14de BW |
4341 | case 4: |
4342 | r = BFD_RELOC_32; | |
4343 | break; | |
4344 | case 8: | |
4345 | r = BFD_RELOC_64; | |
4346 | break; | |
4347 | default: | |
4348 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
4349 | r = BFD_RELOC_32; | |
4350 | break; | |
252b5132 | 4351 | } |
7ddd14de BW |
4352 | fix_new_exp (frag, p - frag->fr_literal, (int) nbytes, exp, |
4353 | 0, r); | |
4354 | } | |
252b5132 | 4355 | #endif |
252b5132 RH |
4356 | } |
4357 | \f | |
4358 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
4359 | ||
4360 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
4361 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
4362 | then pack them all together. We do a little better in that we allow | |
4363 | them in words, longs, etc. and we'll pack them in target byte order | |
4364 | for you. | |
4365 | ||
47eebc20 | 4366 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
4367 | entirely fit, put it in the next unit. Overflowing the bitfield is |
4368 | explicitly *not* even a warning. The bitwidth should be considered | |
4369 | a "mask". | |
4370 | ||
4371 | To use this function the tc-XXX.h file should define | |
4372 | BITFIELD_CONS_EXPRESSIONS. */ | |
4373 | ||
041ff4dd | 4374 | static void |
252b5132 RH |
4375 | parse_bitfield_cons (exp, nbytes) |
4376 | expressionS *exp; | |
4377 | unsigned int nbytes; | |
4378 | { | |
4379 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
4380 | char *hold = input_line_pointer; | |
4381 | ||
4382 | (void) expression (exp); | |
4383 | ||
4384 | if (*input_line_pointer == ':') | |
041ff4dd NC |
4385 | { |
4386 | /* Bitfields. */ | |
252b5132 RH |
4387 | long value = 0; |
4388 | ||
4389 | for (;;) | |
4390 | { | |
4391 | unsigned long width; | |
4392 | ||
4393 | if (*input_line_pointer != ':') | |
4394 | { | |
4395 | input_line_pointer = hold; | |
4396 | break; | |
041ff4dd | 4397 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
4398 | |
4399 | /* In the general case, we can't allow | |
4400 | full expressions with symbol | |
4401 | differences and such. The relocation | |
4402 | entries for symbols not defined in this | |
4403 | assembly would require arbitrary field | |
4404 | widths, positions, and masks which most | |
4405 | of our current object formats don't | |
4406 | support. | |
4407 | ||
4408 | In the specific case where a symbol | |
4409 | *is* defined in this assembly, we | |
4410 | *could* build fixups and track it, but | |
4411 | this could lead to confusion for the | |
4412 | backends. I'm lazy. I'll take any | |
4413 | SEG_ABSOLUTE. I think that means that | |
4414 | you can use a previous .set or | |
041ff4dd | 4415 | .equ type symbol. xoxorich. */ |
252b5132 RH |
4416 | |
4417 | if (exp->X_op == O_absent) | |
4418 | { | |
4419 | as_warn (_("using a bit field width of zero")); | |
4420 | exp->X_add_number = 0; | |
4421 | exp->X_op = O_constant; | |
041ff4dd | 4422 | } /* Implied zero width bitfield. */ |
252b5132 RH |
4423 | |
4424 | if (exp->X_op != O_constant) | |
4425 | { | |
4426 | *input_line_pointer = '\0'; | |
4427 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
4428 | *input_line_pointer = ':'; | |
4429 | demand_empty_rest_of_line (); | |
4430 | return; | |
041ff4dd | 4431 | } /* Too complex. */ |
252b5132 RH |
4432 | |
4433 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
4434 | { | |
4435 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
4436 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
4437 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 4438 | } /* Too big. */ |
252b5132 RH |
4439 | |
4440 | if (width > bits_available) | |
4441 | { | |
4442 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
4443 | input_line_pointer = hold; | |
4444 | exp->X_add_number = value; | |
4445 | break; | |
041ff4dd | 4446 | } /* Won't fit. */ |
252b5132 | 4447 | |
ef99799a KH |
4448 | /* Skip ':'. */ |
4449 | hold = ++input_line_pointer; | |
252b5132 RH |
4450 | |
4451 | (void) expression (exp); | |
4452 | if (exp->X_op != O_constant) | |
4453 | { | |
4454 | char cache = *input_line_pointer; | |
4455 | ||
4456 | *input_line_pointer = '\0'; | |
4457 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
4458 | *input_line_pointer = cache; | |
4459 | demand_empty_rest_of_line (); | |
4460 | return; | |
041ff4dd | 4461 | } /* Too complex. */ |
252b5132 RH |
4462 | |
4463 | value |= ((~(-1 << width) & exp->X_add_number) | |
4464 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
4465 | ||
4466 | if ((bits_available -= width) == 0 | |
4467 | || is_it_end_of_statement () | |
4468 | || *input_line_pointer != ',') | |
4469 | { | |
4470 | break; | |
041ff4dd | 4471 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
4472 | |
4473 | hold = ++input_line_pointer; | |
4474 | (void) expression (exp); | |
041ff4dd | 4475 | } |
252b5132 RH |
4476 | |
4477 | exp->X_add_number = value; | |
4478 | exp->X_op = O_constant; | |
4479 | exp->X_unsigned = 1; | |
041ff4dd NC |
4480 | } |
4481 | } | |
252b5132 RH |
4482 | |
4483 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
4484 | \f | |
4485 | /* Handle an MRI style string expression. */ | |
4486 | ||
abd63a32 | 4487 | #ifdef TC_M68K |
252b5132 RH |
4488 | static void |
4489 | parse_mri_cons (exp, nbytes) | |
4490 | expressionS *exp; | |
4491 | unsigned int nbytes; | |
4492 | { | |
4493 | if (*input_line_pointer != '\'' | |
4494 | && (input_line_pointer[1] != '\'' | |
4495 | || (*input_line_pointer != 'A' | |
4496 | && *input_line_pointer != 'E'))) | |
4497 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
4498 | else | |
4499 | { | |
4500 | unsigned int scan; | |
4501 | unsigned int result = 0; | |
4502 | ||
4503 | /* An MRI style string. Cut into as many bytes as will fit into | |
4504 | a nbyte chunk, left justify if necessary, and separate with | |
4505 | commas so we can try again later. */ | |
4506 | if (*input_line_pointer == 'A') | |
4507 | ++input_line_pointer; | |
4508 | else if (*input_line_pointer == 'E') | |
4509 | { | |
4510 | as_bad (_("EBCDIC constants are not supported")); | |
4511 | ++input_line_pointer; | |
4512 | } | |
4513 | ||
4514 | input_line_pointer++; | |
4515 | for (scan = 0; scan < nbytes; scan++) | |
4516 | { | |
4517 | if (*input_line_pointer == '\'') | |
4518 | { | |
4519 | if (input_line_pointer[1] == '\'') | |
4520 | { | |
4521 | input_line_pointer++; | |
4522 | } | |
4523 | else | |
4524 | break; | |
4525 | } | |
4526 | result = (result << 8) | (*input_line_pointer++); | |
4527 | } | |
4528 | ||
041ff4dd | 4529 | /* Left justify. */ |
252b5132 RH |
4530 | while (scan < nbytes) |
4531 | { | |
4532 | result <<= 8; | |
4533 | scan++; | |
4534 | } | |
f0e652b4 | 4535 | |
041ff4dd | 4536 | /* Create correct expression. */ |
252b5132 RH |
4537 | exp->X_op = O_constant; |
4538 | exp->X_add_number = result; | |
f0e652b4 | 4539 | |
041ff4dd | 4540 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
4541 | if (input_line_pointer[0] != '\'' || |
4542 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
4543 | { | |
4544 | input_line_pointer -= 2; | |
4545 | input_line_pointer[0] = ','; | |
4546 | input_line_pointer[1] = '\''; | |
4547 | } | |
4548 | else | |
4549 | input_line_pointer++; | |
4550 | } | |
4551 | } | |
abd63a32 | 4552 | #endif /* TC_M68K */ |
252b5132 RH |
4553 | \f |
4554 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4555 | ||
4556 | /* Parse a repeat expression for cons. This is used by the MIPS | |
4557 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
4558 | object file COUNT times. | |
4559 | ||
4560 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
4561 | ||
4562 | static void | |
4563 | parse_repeat_cons (exp, nbytes) | |
4564 | expressionS *exp; | |
4565 | unsigned int nbytes; | |
4566 | { | |
4567 | expressionS count; | |
3d540e93 | 4568 | int i; |
252b5132 RH |
4569 | |
4570 | expression (exp); | |
4571 | ||
4572 | if (*input_line_pointer != ':') | |
4573 | { | |
4574 | /* No repeat count. */ | |
4575 | return; | |
4576 | } | |
4577 | ||
4578 | ++input_line_pointer; | |
4579 | expression (&count); | |
4580 | if (count.X_op != O_constant | |
4581 | || count.X_add_number <= 0) | |
4582 | { | |
0e389e77 | 4583 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4584 | return; |
4585 | } | |
4586 | ||
4587 | /* The cons function is going to output this expression once. So we | |
4588 | output it count - 1 times. */ | |
4589 | for (i = count.X_add_number - 1; i > 0; i--) | |
4590 | emit_expr (exp, nbytes); | |
4591 | } | |
4592 | ||
4593 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4594 | \f | |
4595 | /* Parse a floating point number represented as a hex constant. This | |
4596 | permits users to specify the exact bits they want in the floating | |
4597 | point number. */ | |
4598 | ||
4599 | static int | |
39e6acbd | 4600 | hex_float (int float_type, char *bytes) |
252b5132 RH |
4601 | { |
4602 | int length; | |
4603 | int i; | |
4604 | ||
4605 | switch (float_type) | |
4606 | { | |
4607 | case 'f': | |
4608 | case 'F': | |
4609 | case 's': | |
4610 | case 'S': | |
4611 | length = 4; | |
4612 | break; | |
4613 | ||
4614 | case 'd': | |
4615 | case 'D': | |
4616 | case 'r': | |
4617 | case 'R': | |
4618 | length = 8; | |
4619 | break; | |
4620 | ||
4621 | case 'x': | |
4622 | case 'X': | |
4623 | length = 12; | |
4624 | break; | |
4625 | ||
4626 | case 'p': | |
4627 | case 'P': | |
4628 | length = 12; | |
4629 | break; | |
4630 | ||
4631 | default: | |
0e389e77 | 4632 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4633 | return -1; |
4634 | } | |
4635 | ||
4636 | /* It would be nice if we could go through expression to parse the | |
4637 | hex constant, but if we get a bignum it's a pain to sort it into | |
4638 | the buffer correctly. */ | |
4639 | i = 0; | |
4640 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4641 | { | |
4642 | int d; | |
4643 | ||
4644 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4645 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4646 | if (*input_line_pointer == '_') |
4647 | { | |
4648 | ++input_line_pointer; | |
4649 | continue; | |
4650 | } | |
4651 | ||
4652 | if (i >= length) | |
4653 | { | |
0e389e77 | 4654 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4655 | return -1; |
4656 | } | |
4657 | d = hex_value (*input_line_pointer) << 4; | |
4658 | ++input_line_pointer; | |
4659 | while (*input_line_pointer == '_') | |
4660 | ++input_line_pointer; | |
4661 | if (hex_p (*input_line_pointer)) | |
4662 | { | |
4663 | d += hex_value (*input_line_pointer); | |
4664 | ++input_line_pointer; | |
4665 | } | |
4666 | if (target_big_endian) | |
4667 | bytes[i] = d; | |
4668 | else | |
4669 | bytes[length - i - 1] = d; | |
4670 | ++i; | |
4671 | } | |
4672 | ||
4673 | if (i < length) | |
4674 | { | |
4675 | if (target_big_endian) | |
4676 | memset (bytes + i, 0, length - i); | |
4677 | else | |
4678 | memset (bytes, 0, length - i); | |
4679 | } | |
4680 | ||
4681 | return length; | |
4682 | } | |
4683 | ||
d6415f6c | 4684 | /* float_cons() |
f0e652b4 | 4685 | |
041ff4dd NC |
4686 | CONStruct some more frag chars of .floats .ffloats etc. |
4687 | Makes 0 or more new frags. | |
4688 | If need_pass_2 == 1, no frags are emitted. | |
4689 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4690 | |
041ff4dd NC |
4691 | A floating constant is defined by atof_generic(), except it is preceded |
4692 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4693 | reading, I decided to be incompatible. This always tries to give you | |
4694 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4695 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4696 | a choice of 2 flavours of noise according to which of 2 floating-point |
4697 | scanners you directed AS to use. | |
f0e652b4 | 4698 | |
041ff4dd | 4699 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4700 | |
4701 | void | |
39e6acbd | 4702 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
3d540e93 | 4703 | int float_type /* 'f':.ffloat ... 'F':.float ... */) |
252b5132 | 4704 | { |
3d540e93 | 4705 | char *p; |
041ff4dd | 4706 | int length; /* Number of chars in an object. */ |
3d540e93 | 4707 | char *err; /* Error from scanning floating literal. */ |
252b5132 RH |
4708 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4709 | ||
4710 | if (is_it_end_of_statement ()) | |
4711 | { | |
4712 | demand_empty_rest_of_line (); | |
4713 | return; | |
4714 | } | |
4715 | ||
4716 | #ifdef md_flush_pending_output | |
4717 | md_flush_pending_output (); | |
4718 | #endif | |
4719 | ||
cc3f603a JM |
4720 | #ifdef md_cons_align |
4721 | md_cons_align (1); | |
4722 | #endif | |
4723 | ||
252b5132 RH |
4724 | do |
4725 | { | |
041ff4dd | 4726 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4727 | SKIP_WHITESPACE (); |
4728 | ||
4729 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4730 | letter is legal. Someone may invent a "z" format and this routine |
4731 | has no use for such information. Lusers beware: you get | |
4732 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4733 | if (input_line_pointer[0] == '0' |
3882b010 | 4734 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4735 | input_line_pointer += 2; |
4736 | ||
4737 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4738 | point with the exact digits specified. */ |
252b5132 RH |
4739 | if (input_line_pointer[0] == ':') |
4740 | { | |
4741 | ++input_line_pointer; | |
4742 | length = hex_float (float_type, temp); | |
4743 | if (length < 0) | |
4744 | { | |
4745 | ignore_rest_of_line (); | |
4746 | return; | |
4747 | } | |
4748 | } | |
4749 | else | |
4750 | { | |
4751 | err = md_atof (float_type, temp, &length); | |
4752 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
499ac353 | 4753 | know (err != NULL || length > 0); |
252b5132 RH |
4754 | if (err) |
4755 | { | |
0e389e77 | 4756 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4757 | ignore_rest_of_line (); |
4758 | return; | |
4759 | } | |
4760 | } | |
4761 | ||
4762 | if (!need_pass_2) | |
4763 | { | |
4764 | int count; | |
4765 | ||
4766 | count = 1; | |
4767 | ||
4768 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4769 | if (*input_line_pointer == ':') | |
4770 | { | |
4771 | expressionS count_exp; | |
4772 | ||
4773 | ++input_line_pointer; | |
4774 | expression (&count_exp); | |
f0e652b4 | 4775 | |
252b5132 RH |
4776 | if (count_exp.X_op != O_constant |
4777 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4778 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4779 | else |
4780 | count = count_exp.X_add_number; | |
4781 | } | |
4782 | #endif | |
4783 | ||
4784 | while (--count >= 0) | |
4785 | { | |
4786 | p = frag_more (length); | |
4787 | memcpy (p, temp, (unsigned int) length); | |
4788 | } | |
4789 | } | |
4790 | SKIP_WHITESPACE (); | |
4791 | } | |
4792 | while (*input_line_pointer++ == ','); | |
4793 | ||
041ff4dd NC |
4794 | /* Put terminator back into stream. */ |
4795 | --input_line_pointer; | |
252b5132 | 4796 | demand_empty_rest_of_line (); |
041ff4dd | 4797 | } |
252b5132 | 4798 | \f |
041ff4dd | 4799 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4800 | |
4801 | static inline int | |
39e6acbd | 4802 | sizeof_sleb128 (offsetT value) |
252b5132 | 4803 | { |
3d540e93 NC |
4804 | int size = 0; |
4805 | unsigned byte; | |
252b5132 RH |
4806 | |
4807 | do | |
4808 | { | |
4809 | byte = (value & 0x7f); | |
4810 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4811 | Fortunately, we can structure things so that the extra work reduces | |
4812 | to a noop on systems that do things "properly". */ | |
4813 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4814 | size += 1; | |
4815 | } | |
4816 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4817 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4818 | ||
4819 | return size; | |
4820 | } | |
4821 | ||
4822 | static inline int | |
39e6acbd | 4823 | sizeof_uleb128 (valueT value) |
252b5132 | 4824 | { |
3d540e93 | 4825 | int size = 0; |
252b5132 RH |
4826 | |
4827 | do | |
4828 | { | |
252b5132 RH |
4829 | value >>= 7; |
4830 | size += 1; | |
4831 | } | |
4832 | while (value != 0); | |
4833 | ||
4834 | return size; | |
4835 | } | |
4836 | ||
4837 | int | |
39e6acbd | 4838 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4839 | { |
4840 | if (sign) | |
4841 | return sizeof_sleb128 ((offsetT) value); | |
4842 | else | |
4843 | return sizeof_uleb128 (value); | |
4844 | } | |
4845 | ||
4846 | /* Output a LEB128 value. */ | |
4847 | ||
4848 | static inline int | |
39e6acbd | 4849 | output_sleb128 (char *p, offsetT value) |
252b5132 | 4850 | { |
3d540e93 NC |
4851 | char *orig = p; |
4852 | int more; | |
252b5132 RH |
4853 | |
4854 | do | |
4855 | { | |
4856 | unsigned byte = (value & 0x7f); | |
4857 | ||
4858 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4859 | Fortunately, we can structure things so that the extra work reduces | |
4860 | to a noop on systems that do things "properly". */ | |
4861 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4862 | ||
4863 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4864 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4865 | if (more) | |
4866 | byte |= 0x80; | |
4867 | ||
4868 | *p++ = byte; | |
4869 | } | |
4870 | while (more); | |
4871 | ||
4872 | return p - orig; | |
4873 | } | |
4874 | ||
4875 | static inline int | |
39e6acbd | 4876 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4877 | { |
4878 | char *orig = p; | |
4879 | ||
4880 | do | |
4881 | { | |
4882 | unsigned byte = (value & 0x7f); | |
4883 | value >>= 7; | |
4884 | if (value != 0) | |
4885 | /* More bytes to follow. */ | |
4886 | byte |= 0x80; | |
4887 | ||
4888 | *p++ = byte; | |
4889 | } | |
4890 | while (value != 0); | |
4891 | ||
4892 | return p - orig; | |
4893 | } | |
4894 | ||
4895 | int | |
39e6acbd | 4896 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4897 | { |
4898 | if (sign) | |
4899 | return output_sleb128 (p, (offsetT) value); | |
4900 | else | |
4901 | return output_uleb128 (p, value); | |
4902 | } | |
4903 | ||
4904 | /* Do the same for bignums. We combine sizeof with output here in that | |
4905 | we don't output for NULL values of P. It isn't really as critical as | |
4906 | for "normal" values that this be streamlined. */ | |
4907 | ||
6d4d30bb | 4908 | static inline int |
39e6acbd | 4909 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4910 | { |
4911 | char *orig = p; | |
4912 | valueT val = 0; | |
4913 | int loaded = 0; | |
4914 | unsigned byte; | |
4915 | ||
4916 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4917 | while (size > 1 |
4918 | && bignum[size - 1] == LITTLENUM_MASK | |
4919 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4920 | size--; |
4921 | ||
4922 | do | |
4923 | { | |
e5604d79 RS |
4924 | /* OR in the next part of the littlenum. */ |
4925 | val |= (*bignum << loaded); | |
4926 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4927 | size--; | |
4928 | bignum++; | |
4929 | ||
4930 | /* Add bytes until there are less than 7 bits left in VAL | |
4931 | or until every non-sign bit has been written. */ | |
4932 | do | |
252b5132 | 4933 | { |
e5604d79 RS |
4934 | byte = val & 0x7f; |
4935 | loaded -= 7; | |
4936 | val >>= 7; | |
4937 | if (size > 0 | |
4938 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 4939 | byte |= 0x80; |
e5604d79 RS |
4940 | |
4941 | if (orig) | |
4942 | *p = byte; | |
4943 | p++; | |
252b5132 | 4944 | } |
e5604d79 RS |
4945 | while ((byte & 0x80) != 0 && loaded >= 7); |
4946 | } | |
4947 | while (size > 0); | |
252b5132 | 4948 | |
e5604d79 RS |
4949 | /* Mop up any left-over bits (of which there will be less than 7). */ |
4950 | if ((byte & 0x80) != 0) | |
4951 | { | |
4952 | /* Sign-extend VAL. */ | |
4953 | if (val & (1 << (loaded - 1))) | |
4954 | val |= ~0 << loaded; | |
252b5132 | 4955 | if (orig) |
e5604d79 | 4956 | *p = val & 0x7f; |
252b5132 RH |
4957 | p++; |
4958 | } | |
252b5132 RH |
4959 | |
4960 | return p - orig; | |
4961 | } | |
4962 | ||
6d4d30bb | 4963 | static inline int |
39e6acbd | 4964 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4965 | { |
4966 | char *orig = p; | |
4967 | valueT val = 0; | |
4968 | int loaded = 0; | |
4969 | unsigned byte; | |
4970 | ||
4971 | /* Strip leading zeros off the bignum. */ | |
4972 | /* XXX: Is this needed? */ | |
041ff4dd | 4973 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4974 | size--; |
4975 | ||
4976 | do | |
4977 | { | |
4978 | if (loaded < 7 && size > 0) | |
4979 | { | |
4980 | val |= (*bignum << loaded); | |
4981 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4982 | size--; | |
4983 | bignum++; | |
4984 | } | |
4985 | ||
4986 | byte = val & 0x7f; | |
4987 | loaded -= 7; | |
4988 | val >>= 7; | |
4989 | ||
4990 | if (size > 0 || val) | |
4991 | byte |= 0x80; | |
4992 | ||
4993 | if (orig) | |
4994 | *p = byte; | |
4995 | p++; | |
4996 | } | |
4997 | while (byte & 0x80); | |
4998 | ||
4999 | return p - orig; | |
5000 | } | |
5001 | ||
6d4d30bb | 5002 | static int |
39e6acbd | 5003 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
5004 | { |
5005 | if (sign) | |
5006 | return output_big_sleb128 (p, bignum, size); | |
5007 | else | |
5008 | return output_big_uleb128 (p, bignum, size); | |
5009 | } | |
5010 | ||
5011 | /* Generate the appropriate fragments for a given expression to emit a | |
5012 | leb128 value. */ | |
5013 | ||
87c245cc | 5014 | static void |
39e6acbd | 5015 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
5016 | { |
5017 | operatorT op = exp->X_op; | |
b7712f8d | 5018 | unsigned int nbytes; |
252b5132 RH |
5019 | |
5020 | if (op == O_absent || op == O_illegal) | |
5021 | { | |
5022 | as_warn (_("zero assumed for missing expression")); | |
5023 | exp->X_add_number = 0; | |
5024 | op = O_constant; | |
5025 | } | |
5026 | else if (op == O_big && exp->X_add_number <= 0) | |
5027 | { | |
0e389e77 | 5028 | as_bad (_("floating point number invalid")); |
252b5132 RH |
5029 | exp->X_add_number = 0; |
5030 | op = O_constant; | |
5031 | } | |
5032 | else if (op == O_register) | |
5033 | { | |
5034 | as_warn (_("register value used as expression")); | |
5035 | op = O_constant; | |
5036 | } | |
e5604d79 RS |
5037 | else if (op == O_constant |
5038 | && sign | |
5039 | && (exp->X_add_number < 0) != !exp->X_unsigned) | |
5040 | { | |
5041 | /* We're outputting a signed leb128 and the sign of X_add_number | |
5042 | doesn't reflect the sign of the original value. Convert EXP | |
5043 | to a correctly-extended bignum instead. */ | |
5044 | convert_to_bignum (exp); | |
5045 | op = O_big; | |
5046 | } | |
252b5132 | 5047 | |
67a659f6 RH |
5048 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
5049 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
b7712f8d | 5050 | nbytes = (unsigned int) -1; |
67a659f6 RH |
5051 | if (check_eh_frame (exp, &nbytes)) |
5052 | abort (); | |
5053 | ||
371b7465 RH |
5054 | /* Let the backend know that subsequent data may be byte aligned. */ |
5055 | #ifdef md_cons_align | |
5056 | md_cons_align (1); | |
5057 | #endif | |
5058 | ||
252b5132 RH |
5059 | if (op == O_constant) |
5060 | { | |
5061 | /* If we've got a constant, emit the thing directly right now. */ | |
5062 | ||
5063 | valueT value = exp->X_add_number; | |
5064 | int size; | |
5065 | char *p; | |
5066 | ||
5067 | size = sizeof_leb128 (value, sign); | |
5068 | p = frag_more (size); | |
5069 | output_leb128 (p, value, sign); | |
5070 | } | |
5071 | else if (op == O_big) | |
5072 | { | |
5073 | /* O_big is a different sort of constant. */ | |
5074 | ||
5075 | int size; | |
5076 | char *p; | |
5077 | ||
5078 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
5079 | p = frag_more (size); | |
5080 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
5081 | } | |
5082 | else | |
5083 | { | |
041ff4dd | 5084 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
5085 | resolve things later. */ |
5086 | ||
041ff4dd | 5087 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
5088 | make_expr_symbol (exp), 0, (char *) NULL); |
5089 | } | |
5090 | } | |
5091 | ||
5092 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
5093 | ||
5094 | void | |
39e6acbd | 5095 | s_leb128 (int sign) |
252b5132 RH |
5096 | { |
5097 | expressionS exp; | |
5098 | ||
00bbdfe7 BW |
5099 | #ifdef md_flush_pending_output |
5100 | md_flush_pending_output (); | |
5101 | #endif | |
5102 | ||
041ff4dd NC |
5103 | do |
5104 | { | |
5105 | expression (&exp); | |
5106 | emit_leb128_expr (&exp, sign); | |
5107 | } | |
5108 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
5109 | |
5110 | input_line_pointer--; | |
5111 | demand_empty_rest_of_line (); | |
5112 | } | |
5113 | \f | |
38a57ae7 NC |
5114 | static void |
5115 | stringer_append_char (int c, int bitsize) | |
5116 | { | |
5117 | if (!target_big_endian) | |
5118 | FRAG_APPEND_1_CHAR (c); | |
5119 | ||
5120 | switch (bitsize) | |
5121 | { | |
5122 | case 64: | |
5123 | FRAG_APPEND_1_CHAR (0); | |
5124 | FRAG_APPEND_1_CHAR (0); | |
5125 | FRAG_APPEND_1_CHAR (0); | |
5126 | FRAG_APPEND_1_CHAR (0); | |
5127 | /* Fall through. */ | |
5128 | case 32: | |
5129 | FRAG_APPEND_1_CHAR (0); | |
5130 | FRAG_APPEND_1_CHAR (0); | |
5131 | /* Fall through. */ | |
5132 | case 16: | |
5133 | FRAG_APPEND_1_CHAR (0); | |
5134 | /* Fall through. */ | |
5135 | case 8: | |
5136 | break; | |
5137 | default: | |
5138 | /* Called with invalid bitsize argument. */ | |
5139 | abort (); | |
5140 | break; | |
5141 | } | |
5142 | if (target_big_endian) | |
5143 | FRAG_APPEND_1_CHAR (c); | |
5144 | } | |
5145 | ||
5146 | /* Worker to do .ascii etc statements. | |
5147 | Reads 0 or more ',' separated, double-quoted strings. | |
041ff4dd | 5148 | Caller should have checked need_pass_2 is FALSE because we don't |
38a57ae7 NC |
5149 | check it. |
5150 | Checks for end-of-line. | |
5151 | BITS_APPENDZERO says how many bits are in a target char. | |
5152 | The bottom bit is set if a NUL char should be appended to the strings. */ | |
041ff4dd NC |
5153 | |
5154 | void | |
38a57ae7 | 5155 | stringer (int bits_appendzero) |
252b5132 | 5156 | { |
38a57ae7 NC |
5157 | const int bitsize = bits_appendzero & ~7; |
5158 | const int append_zero = bits_appendzero & 1; | |
5159 | unsigned int c; | |
87975d2a | 5160 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5161 | char *start; |
87975d2a | 5162 | #endif |
252b5132 RH |
5163 | |
5164 | #ifdef md_flush_pending_output | |
5165 | md_flush_pending_output (); | |
5166 | #endif | |
5167 | ||
cc3f603a JM |
5168 | #ifdef md_cons_align |
5169 | md_cons_align (1); | |
5170 | #endif | |
5171 | ||
041ff4dd NC |
5172 | /* The following awkward logic is to parse ZERO or more strings, |
5173 | comma separated. Recall a string expression includes spaces | |
5174 | before the opening '\"' and spaces after the closing '\"'. | |
5175 | We fake a leading ',' if there is (supposed to be) | |
5176 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
5177 | if (is_it_end_of_statement ()) |
5178 | { | |
041ff4dd NC |
5179 | c = 0; /* Skip loop. */ |
5180 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
5181 | } |
5182 | else | |
5183 | { | |
041ff4dd | 5184 | c = ','; /* Do loop. */ |
252b5132 | 5185 | } |
8ac9ba6c NC |
5186 | /* If we have been switched into the abs_section then we |
5187 | will not have an obstack onto which we can hang strings. */ | |
5188 | if (now_seg == absolute_section) | |
5189 | { | |
5190 | as_bad (_("strings must be placed into a section")); | |
5191 | c = 0; | |
5192 | ignore_rest_of_line (); | |
5193 | } | |
d6415f6c | 5194 | |
252b5132 RH |
5195 | while (c == ',' || c == '<' || c == '"') |
5196 | { | |
5197 | SKIP_WHITESPACE (); | |
5198 | switch (*input_line_pointer) | |
5199 | { | |
5200 | case '\"': | |
041ff4dd | 5201 | ++input_line_pointer; /*->1st char of string. */ |
87975d2a | 5202 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5203 | start = input_line_pointer; |
87975d2a | 5204 | #endif |
38a57ae7 | 5205 | |
252b5132 | 5206 | while (is_a_char (c = next_char_of_string ())) |
38a57ae7 NC |
5207 | stringer_append_char (c, bitsize); |
5208 | ||
252b5132 | 5209 | if (append_zero) |
38a57ae7 NC |
5210 | stringer_append_char (0, bitsize); |
5211 | ||
252b5132 RH |
5212 | know (input_line_pointer[-1] == '\"'); |
5213 | ||
87975d2a | 5214 | #if !defined(NO_LISTING) && defined (OBJ_ELF) |
252b5132 | 5215 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it |
d6415f6c AM |
5216 | will emit .string with a filename in the .debug section |
5217 | after a sequence of constants. See the comment in | |
5218 | emit_expr for the sequence. emit_expr will set | |
5219 | dwarf_file_string to non-zero if this string might be a | |
5220 | source file name. */ | |
252b5132 RH |
5221 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
5222 | dwarf_file_string = 0; | |
5223 | else if (dwarf_file_string) | |
5224 | { | |
5225 | c = input_line_pointer[-1]; | |
5226 | input_line_pointer[-1] = '\0'; | |
5227 | listing_source_file (start); | |
5228 | input_line_pointer[-1] = c; | |
5229 | } | |
252b5132 RH |
5230 | #endif |
5231 | ||
5232 | break; | |
5233 | case '<': | |
5234 | input_line_pointer++; | |
5235 | c = get_single_number (); | |
38a57ae7 | 5236 | stringer_append_char (c, bitsize); |
252b5132 | 5237 | if (*input_line_pointer != '>') |
38a57ae7 NC |
5238 | as_bad (_("expected <nn>")); |
5239 | ||
252b5132 RH |
5240 | input_line_pointer++; |
5241 | break; | |
5242 | case ',': | |
5243 | input_line_pointer++; | |
5244 | break; | |
5245 | } | |
5246 | SKIP_WHITESPACE (); | |
5247 | c = *input_line_pointer; | |
5248 | } | |
5249 | ||
5250 | demand_empty_rest_of_line (); | |
38a57ae7 | 5251 | } |
252b5132 RH |
5252 | \f |
5253 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
5254 | high bits set. We'll probably also have trouble with | |
5255 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 5256 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 5257 | |
041ff4dd | 5258 | unsigned int |
39e6acbd | 5259 | next_char_of_string (void) |
252b5132 | 5260 | { |
3d540e93 | 5261 | unsigned int c; |
252b5132 RH |
5262 | |
5263 | c = *input_line_pointer++ & CHAR_MASK; | |
5264 | switch (c) | |
5265 | { | |
5266 | case '\"': | |
5267 | c = NOT_A_CHAR; | |
5268 | break; | |
5269 | ||
5270 | case '\n': | |
0e389e77 | 5271 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5272 | bump_line_counters (); |
5273 | break; | |
5274 | ||
5275 | #ifndef NO_STRING_ESCAPES | |
5276 | case '\\': | |
5277 | switch (c = *input_line_pointer++) | |
5278 | { | |
5279 | case 'b': | |
5280 | c = '\b'; | |
5281 | break; | |
5282 | ||
5283 | case 'f': | |
5284 | c = '\f'; | |
5285 | break; | |
5286 | ||
5287 | case 'n': | |
5288 | c = '\n'; | |
5289 | break; | |
5290 | ||
5291 | case 'r': | |
5292 | c = '\r'; | |
5293 | break; | |
5294 | ||
5295 | case 't': | |
5296 | c = '\t'; | |
5297 | break; | |
5298 | ||
5299 | case 'v': | |
5300 | c = '\013'; | |
5301 | break; | |
5302 | ||
5303 | case '\\': | |
5304 | case '"': | |
041ff4dd | 5305 | break; /* As itself. */ |
252b5132 RH |
5306 | |
5307 | case '0': | |
5308 | case '1': | |
5309 | case '2': | |
5310 | case '3': | |
5311 | case '4': | |
5312 | case '5': | |
5313 | case '6': | |
5314 | case '7': | |
5315 | case '8': | |
5316 | case '9': | |
5317 | { | |
5318 | long number; | |
5319 | int i; | |
5320 | ||
041ff4dd | 5321 | for (i = 0, number = 0; |
3882b010 | 5322 | ISDIGIT (c) && i < 3; |
041ff4dd | 5323 | c = *input_line_pointer++, i++) |
252b5132 RH |
5324 | { |
5325 | number = number * 8 + c - '0'; | |
5326 | } | |
f0e652b4 | 5327 | |
252b5132 RH |
5328 | c = number & 0xff; |
5329 | } | |
5330 | --input_line_pointer; | |
5331 | break; | |
5332 | ||
5333 | case 'x': | |
5334 | case 'X': | |
5335 | { | |
5336 | long number; | |
5337 | ||
5338 | number = 0; | |
5339 | c = *input_line_pointer++; | |
3882b010 | 5340 | while (ISXDIGIT (c)) |
252b5132 | 5341 | { |
3882b010 | 5342 | if (ISDIGIT (c)) |
252b5132 | 5343 | number = number * 16 + c - '0'; |
3882b010 | 5344 | else if (ISUPPER (c)) |
252b5132 RH |
5345 | number = number * 16 + c - 'A' + 10; |
5346 | else | |
5347 | number = number * 16 + c - 'a' + 10; | |
5348 | c = *input_line_pointer++; | |
5349 | } | |
5350 | c = number & 0xff; | |
5351 | --input_line_pointer; | |
5352 | } | |
5353 | break; | |
5354 | ||
5355 | case '\n': | |
041ff4dd | 5356 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 5357 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
5358 | c = '\n'; |
5359 | bump_line_counters (); | |
5360 | break; | |
5361 | ||
5362 | default: | |
5363 | ||
5364 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 5365 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
5366 | c = '?'; |
5367 | #endif /* ONLY_STANDARD_ESCAPES */ | |
5368 | ||
5369 | break; | |
041ff4dd | 5370 | } |
252b5132 RH |
5371 | break; |
5372 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
5373 | ||
5374 | default: | |
5375 | break; | |
041ff4dd | 5376 | } |
252b5132 | 5377 | return (c); |
041ff4dd | 5378 | } |
252b5132 RH |
5379 | \f |
5380 | static segT | |
3d540e93 | 5381 | get_segmented_expression (expressionS *expP) |
252b5132 | 5382 | { |
3d540e93 | 5383 | segT retval; |
252b5132 RH |
5384 | |
5385 | retval = expression (expP); | |
5386 | if (expP->X_op == O_illegal | |
5387 | || expP->X_op == O_absent | |
5388 | || expP->X_op == O_big) | |
5389 | { | |
0e389e77 | 5390 | as_bad (_("expected address expression")); |
252b5132 RH |
5391 | expP->X_op = O_constant; |
5392 | expP->X_add_number = 0; | |
5393 | retval = absolute_section; | |
5394 | } | |
5395 | return retval; | |
5396 | } | |
5397 | ||
041ff4dd | 5398 | static segT |
3d540e93 | 5399 | get_known_segmented_expression (expressionS *expP) |
252b5132 | 5400 | { |
3d540e93 | 5401 | segT retval; |
252b5132 RH |
5402 | |
5403 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
5404 | { | |
5405 | /* There is no easy way to extract the undefined symbol from the | |
5406 | expression. */ | |
5407 | if (expP->X_add_symbol != NULL | |
5408 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
5409 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
5410 | S_GET_NAME (expP->X_add_symbol)); | |
5411 | else | |
5412 | as_warn (_("some symbol undefined; zero assumed")); | |
5413 | retval = absolute_section; | |
5414 | expP->X_op = O_constant; | |
5415 | expP->X_add_number = 0; | |
5416 | } | |
5417 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
5418 | return (retval); | |
041ff4dd | 5419 | } |
252b5132 | 5420 | |
041ff4dd | 5421 | char /* Return terminator. */ |
39e6acbd | 5422 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
5423 | { |
5424 | /* FIXME: val_pointer should probably be offsetT *. */ | |
5425 | *val_pointer = (long) get_absolute_expression (); | |
5426 | return (*input_line_pointer++); | |
5427 | } | |
5428 | \f | |
041ff4dd NC |
5429 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
5430 | Give a warning if that happens. */ | |
5431 | ||
252b5132 | 5432 | char * |
39e6acbd | 5433 | demand_copy_C_string (int *len_pointer) |
252b5132 | 5434 | { |
3d540e93 | 5435 | char *s; |
252b5132 RH |
5436 | |
5437 | if ((s = demand_copy_string (len_pointer)) != 0) | |
5438 | { | |
3d540e93 | 5439 | int len; |
252b5132 RH |
5440 | |
5441 | for (len = *len_pointer; len > 0; len--) | |
5442 | { | |
5443 | if (*s == 0) | |
5444 | { | |
5445 | s = 0; | |
5446 | len = 1; | |
5447 | *len_pointer = 0; | |
0e389e77 | 5448 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
5449 | } |
5450 | } | |
5451 | } | |
f0e652b4 | 5452 | |
252b5132 RH |
5453 | return s; |
5454 | } | |
5455 | \f | |
041ff4dd NC |
5456 | /* Demand string, but return a safe (=private) copy of the string. |
5457 | Return NULL if we can't read a string here. */ | |
5458 | ||
252b5132 | 5459 | char * |
39e6acbd | 5460 | demand_copy_string (int *lenP) |
252b5132 | 5461 | { |
3d540e93 NC |
5462 | unsigned int c; |
5463 | int len; | |
252b5132 RH |
5464 | char *retval; |
5465 | ||
5466 | len = 0; | |
5467 | SKIP_WHITESPACE (); | |
5468 | if (*input_line_pointer == '\"') | |
5469 | { | |
041ff4dd | 5470 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
5471 | |
5472 | while (is_a_char (c = next_char_of_string ())) | |
5473 | { | |
5474 | obstack_1grow (¬es, c); | |
5475 | len++; | |
5476 | } | |
5477 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 5478 | null terminated string. */ |
252b5132 | 5479 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5480 | retval = (char *) obstack_finish (¬es); |
252b5132 RH |
5481 | } |
5482 | else | |
5483 | { | |
c95b35a9 | 5484 | as_bad (_("missing string")); |
252b5132 RH |
5485 | retval = NULL; |
5486 | ignore_rest_of_line (); | |
5487 | } | |
5488 | *lenP = len; | |
5489 | return (retval); | |
041ff4dd | 5490 | } |
252b5132 | 5491 | \f |
041ff4dd | 5492 | /* In: Input_line_pointer->next character. |
f0e652b4 | 5493 | |
041ff4dd | 5494 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 5495 | |
041ff4dd NC |
5496 | Out: 1 if input_line_pointer->end-of-line. */ |
5497 | ||
5498 | int | |
39e6acbd | 5499 | is_it_end_of_statement (void) |
252b5132 RH |
5500 | { |
5501 | SKIP_WHITESPACE (); | |
5502 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 5503 | } |
252b5132 | 5504 | |
041ff4dd | 5505 | void |
39e6acbd | 5506 | equals (char *sym_name, int reassign) |
252b5132 | 5507 | { |
252b5132 | 5508 | char *stop = NULL; |
fb25138b | 5509 | char stopc = 0; |
252b5132 RH |
5510 | |
5511 | input_line_pointer++; | |
5512 | if (*input_line_pointer == '=') | |
5513 | input_line_pointer++; | |
9497f5ac NC |
5514 | if (reassign < 0 && *input_line_pointer == '=') |
5515 | input_line_pointer++; | |
252b5132 RH |
5516 | |
5517 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
5518 | input_line_pointer++; | |
5519 | ||
5520 | if (flag_mri) | |
5521 | stop = mri_comment_field (&stopc); | |
5522 | ||
9497f5ac | 5523 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); |
252b5132 RH |
5524 | |
5525 | if (flag_mri) | |
31d20a21 AM |
5526 | { |
5527 | demand_empty_rest_of_line (); | |
5528 | mri_comment_end (stop, stopc); | |
5529 | } | |
041ff4dd | 5530 | } |
252b5132 | 5531 | |
7e005732 NC |
5532 | /* .incbin -- include a file verbatim at the current location. */ |
5533 | ||
5534 | void | |
39e6acbd | 5535 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
5536 | { |
5537 | FILE * binfile; | |
5538 | char * path; | |
5539 | char * filename; | |
5540 | char * binfrag; | |
5541 | long skip = 0; | |
5542 | long count = 0; | |
5543 | long bytes; | |
5544 | int len; | |
5545 | ||
5546 | #ifdef md_flush_pending_output | |
5547 | md_flush_pending_output (); | |
5548 | #endif | |
5549 | ||
cc3f603a JM |
5550 | #ifdef md_cons_align |
5551 | md_cons_align (1); | |
5552 | #endif | |
5553 | ||
7e005732 NC |
5554 | SKIP_WHITESPACE (); |
5555 | filename = demand_copy_string (& len); | |
5556 | if (filename == NULL) | |
5557 | return; | |
5558 | ||
5559 | SKIP_WHITESPACE (); | |
5560 | ||
5561 | /* Look for optional skip and count. */ | |
5562 | if (* input_line_pointer == ',') | |
5563 | { | |
5564 | ++ input_line_pointer; | |
5565 | skip = get_absolute_expression (); | |
5566 | ||
5567 | SKIP_WHITESPACE (); | |
5568 | ||
5569 | if (* input_line_pointer == ',') | |
5570 | { | |
5571 | ++ input_line_pointer; | |
5572 | ||
5573 | count = get_absolute_expression (); | |
5574 | if (count == 0) | |
5575 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
5576 | ||
5577 | SKIP_WHITESPACE (); | |
5578 | } | |
5579 | } | |
5580 | ||
5581 | demand_empty_rest_of_line (); | |
5582 | ||
5583 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5584 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5585 | if (binfile == NULL) |
5586 | { | |
5587 | int i; | |
5588 | ||
1e9cc1c2 | 5589 | path = (char *) xmalloc ((unsigned long) len + include_dir_maxlen + 5); |
7e005732 NC |
5590 | |
5591 | for (i = 0; i < include_dir_count; i++) | |
5592 | { | |
5593 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5594 | ||
f740e790 | 5595 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5596 | if (binfile != NULL) |
5597 | break; | |
5598 | } | |
5599 | ||
5600 | if (binfile == NULL) | |
5601 | as_bad (_("file not found: %s"), filename); | |
5602 | } | |
5603 | else | |
5604 | path = xstrdup (filename); | |
5605 | ||
5606 | if (binfile) | |
5607 | { | |
f740e790 NC |
5608 | long file_len; |
5609 | ||
7e005732 NC |
5610 | register_dependency (path); |
5611 | ||
5612 | /* Compute the length of the file. */ | |
5613 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5614 | { | |
5615 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5616 | goto done; | |
5617 | } | |
f740e790 | 5618 | file_len = ftell (binfile); |
7e005732 | 5619 | |
c556cc9c | 5620 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5621 | if (count == 0) |
c556cc9c | 5622 | count = file_len - skip; |
7e005732 | 5623 | |
c556cc9c | 5624 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5625 | { |
c556cc9c | 5626 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5627 | skip, count, file_len); |
7e005732 NC |
5628 | goto done; |
5629 | } | |
5630 | ||
5631 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5632 | { | |
5633 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5634 | goto done; | |
5635 | } | |
5636 | ||
5637 | /* Allocate frag space and store file contents in it. */ | |
5638 | binfrag = frag_more (count); | |
5639 | ||
5640 | bytes = fread (binfrag, 1, count, binfile); | |
5641 | if (bytes < count) | |
5642 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5643 | path, bytes, count); | |
5644 | } | |
5645 | done: | |
5646 | if (binfile != NULL) | |
5647 | fclose (binfile); | |
5648 | if (path) | |
5649 | free (path); | |
5650 | } | |
5651 | ||
041ff4dd | 5652 | /* .include -- include a file at this point. */ |
252b5132 | 5653 | |
041ff4dd | 5654 | void |
39e6acbd | 5655 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5656 | { |
252b5132 RH |
5657 | char *filename; |
5658 | int i; | |
1e9cc1c2 | 5659 | FILE *try_file; |
252b5132 RH |
5660 | char *path; |
5661 | ||
041ff4dd | 5662 | if (!flag_m68k_mri) |
252b5132 RH |
5663 | { |
5664 | filename = demand_copy_string (&i); | |
5665 | if (filename == NULL) | |
5666 | { | |
5667 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5668 | called ignore_rest_of_line. */ |
252b5132 RH |
5669 | return; |
5670 | } | |
5671 | } | |
5672 | else | |
5673 | { | |
5674 | SKIP_WHITESPACE (); | |
5675 | i = 0; | |
041ff4dd | 5676 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5677 | && *input_line_pointer != ' ' |
5678 | && *input_line_pointer != '\t') | |
5679 | { | |
5680 | obstack_1grow (¬es, *input_line_pointer); | |
5681 | ++input_line_pointer; | |
5682 | ++i; | |
5683 | } | |
f0e652b4 | 5684 | |
252b5132 | 5685 | obstack_1grow (¬es, '\0'); |
1e9cc1c2 | 5686 | filename = (char *) obstack_finish (¬es); |
041ff4dd | 5687 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5688 | ++input_line_pointer; |
5689 | } | |
f0e652b4 | 5690 | |
252b5132 | 5691 | demand_empty_rest_of_line (); |
1e9cc1c2 NC |
5692 | path = (char *) xmalloc ((unsigned long) i |
5693 | + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5694 | |
252b5132 RH |
5695 | for (i = 0; i < include_dir_count; i++) |
5696 | { | |
5697 | strcpy (path, include_dirs[i]); | |
5698 | strcat (path, "/"); | |
5699 | strcat (path, filename); | |
1e9cc1c2 | 5700 | if (0 != (try_file = fopen (path, FOPEN_RT))) |
252b5132 | 5701 | { |
1e9cc1c2 | 5702 | fclose (try_file); |
252b5132 RH |
5703 | goto gotit; |
5704 | } | |
5705 | } | |
f0e652b4 | 5706 | |
252b5132 RH |
5707 | free (path); |
5708 | path = filename; | |
5709 | gotit: | |
041ff4dd | 5710 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5711 | register_dependency (path); |
9f10757c | 5712 | input_scrub_insert_file (path); |
041ff4dd | 5713 | } |
252b5132 | 5714 | |
041ff4dd | 5715 | void |
39e6acbd | 5716 | add_include_dir (char *path) |
252b5132 RH |
5717 | { |
5718 | int i; | |
5719 | ||
5720 | if (include_dir_count == 0) | |
5721 | { | |
5722 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5723 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5724 | include_dir_count = 2; |
5725 | } | |
5726 | else | |
5727 | { | |
5728 | include_dir_count++; | |
041ff4dd NC |
5729 | include_dirs = |
5730 | (char **) realloc (include_dirs, | |
5731 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5732 | } |
5733 | ||
041ff4dd | 5734 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5735 | |
5736 | i = strlen (path); | |
5737 | if (i > include_dir_maxlen) | |
5738 | include_dir_maxlen = i; | |
041ff4dd | 5739 | } |
252b5132 RH |
5740 | \f |
5741 | /* Output debugging information to denote the source file. */ | |
5742 | ||
5743 | static void | |
39e6acbd | 5744 | generate_file_debug (void) |
252b5132 RH |
5745 | { |
5746 | if (debug_type == DEBUG_STABS) | |
5747 | stabs_generate_asm_file (); | |
5748 | } | |
5749 | ||
5750 | /* Output line number debugging information for the current source line. */ | |
5751 | ||
5752 | void | |
39e6acbd | 5753 | generate_lineno_debug (void) |
252b5132 | 5754 | { |
252b5132 RH |
5755 | switch (debug_type) |
5756 | { | |
5757 | case DEBUG_UNSPECIFIED: | |
5758 | case DEBUG_NONE: | |
4dc7ead9 | 5759 | case DEBUG_DWARF: |
252b5132 RH |
5760 | break; |
5761 | case DEBUG_STABS: | |
5762 | stabs_generate_asm_lineno (); | |
5763 | break; | |
5764 | case DEBUG_ECOFF: | |
5765 | ecoff_generate_asm_lineno (); | |
5766 | break; | |
252b5132 | 5767 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5768 | /* ??? We could here indicate to dwarf2dbg.c that something |
5769 | has changed. However, since there is additional backend | |
5770 | support that is required (calling dwarf2_emit_insn), we | |
5771 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5772 | break; |
5773 | } | |
5774 | } | |
5775 | ||
5776 | /* Output debugging information to mark a function entry point or end point. | |
5777 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5778 | ||
5779 | void | |
39e6acbd | 5780 | s_func (int end_p) |
252b5132 RH |
5781 | { |
5782 | do_s_func (end_p, NULL); | |
5783 | } | |
5784 | ||
5785 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5786 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5787 | ||
87c245cc | 5788 | static void |
39e6acbd | 5789 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5790 | { |
5791 | /* Record the current function so that we can issue an error message for | |
5792 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5793 | arguments. */ | |
5794 | static char *current_name; | |
5795 | static char *current_label; | |
5796 | ||
5797 | if (end_p) | |
5798 | { | |
5799 | if (current_name == NULL) | |
5800 | { | |
5801 | as_bad (_("missing .func")); | |
5802 | ignore_rest_of_line (); | |
5803 | return; | |
5804 | } | |
5805 | ||
5806 | if (debug_type == DEBUG_STABS) | |
5807 | stabs_generate_asm_endfunc (current_name, current_label); | |
5808 | ||
5809 | current_name = current_label = NULL; | |
5810 | } | |
5811 | else /* ! end_p */ | |
5812 | { | |
041ff4dd NC |
5813 | char *name, *label; |
5814 | char delim1, delim2; | |
252b5132 RH |
5815 | |
5816 | if (current_name != NULL) | |
5817 | { | |
5818 | as_bad (_(".endfunc missing for previous .func")); | |
5819 | ignore_rest_of_line (); | |
5820 | return; | |
5821 | } | |
5822 | ||
5823 | name = input_line_pointer; | |
5824 | delim1 = get_symbol_end (); | |
5825 | name = xstrdup (name); | |
5826 | *input_line_pointer = delim1; | |
5827 | SKIP_WHITESPACE (); | |
5828 | if (*input_line_pointer != ',') | |
5829 | { | |
5830 | if (default_prefix) | |
05f4ab67 AM |
5831 | { |
5832 | if (asprintf (&label, "%s%s", default_prefix, name) == -1) | |
5833 | as_fatal ("%s", xstrerror (errno)); | |
5834 | } | |
252b5132 RH |
5835 | else |
5836 | { | |
7be1c489 | 5837 | char leading_char = bfd_get_symbol_leading_char (stdoutput); |
252b5132 RH |
5838 | /* Missing entry point, use function's name with the leading |
5839 | char prepended. */ | |
5840 | if (leading_char) | |
05f4ab67 AM |
5841 | { |
5842 | if (asprintf (&label, "%c%s", leading_char, name) == -1) | |
5843 | as_fatal ("%s", xstrerror (errno)); | |
5844 | } | |
252b5132 RH |
5845 | else |
5846 | label = name; | |
5847 | } | |
5848 | } | |
5849 | else | |
5850 | { | |
5851 | ++input_line_pointer; | |
5852 | SKIP_WHITESPACE (); | |
5853 | label = input_line_pointer; | |
5854 | delim2 = get_symbol_end (); | |
5855 | label = xstrdup (label); | |
5856 | *input_line_pointer = delim2; | |
5857 | } | |
5858 | ||
5859 | if (debug_type == DEBUG_STABS) | |
5860 | stabs_generate_asm_func (name, label); | |
5861 | ||
5862 | current_name = name; | |
5863 | current_label = label; | |
5864 | } | |
5865 | ||
5866 | demand_empty_rest_of_line (); | |
5867 | } | |
5868 | \f | |
041ff4dd | 5869 | void |
39e6acbd | 5870 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5871 | { |
40a4d956 | 5872 | ignore_rest_of_line (); |
252b5132 RH |
5873 | } |
5874 | ||
252b5132 | 5875 | void |
39e6acbd | 5876 | read_print_statistics (FILE *file) |
252b5132 RH |
5877 | { |
5878 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5879 | } | |
5880 | ||
041ff4dd NC |
5881 | /* Inserts the given line into the input stream. |
5882 | ||
9f10757c TW |
5883 | This call avoids macro/conditionals nesting checking, since the contents of |
5884 | the line are assumed to replace the contents of a line already scanned. | |
5885 | ||
47eebc20 | 5886 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
5887 | called by md_start_line_hook(). The given line is assumed to already be |
5888 | properly scrubbed. */ | |
5889 | ||
5890 | void | |
39e6acbd | 5891 | input_scrub_insert_line (const char *line) |
9f10757c TW |
5892 | { |
5893 | sb newline; | |
5894 | sb_new (&newline); | |
5895 | sb_add_string (&newline, line); | |
5896 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5897 | sb_kill (&newline); | |
5898 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5899 | } | |
5900 | ||
5901 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5902 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5903 | |
5904 | void | |
39e6acbd | 5905 | input_scrub_insert_file (char *path) |
9f10757c TW |
5906 | { |
5907 | input_scrub_include_file (path, input_line_pointer); | |
5908 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5909 | } | |
40a4d956 JB |
5910 | |
5911 | /* Find the end of a line, considering quotation and escaping of quotes. */ | |
5912 | ||
5913 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | |
5914 | # define TC_SINGLE_QUOTE_STRINGS 1 | |
5915 | #endif | |
5916 | ||
5917 | static char * | |
7592cfd7 NC |
5918 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED, |
5919 | int in_macro) | |
40a4d956 JB |
5920 | { |
5921 | char inquote = '\0'; | |
5922 | int inescape = 0; | |
5923 | ||
5924 | while (!is_end_of_line[(unsigned char) *s] | |
5925 | || (inquote && !ISCNTRL (*s)) | |
5926 | || (inquote == '\'' && flag_mri) | |
5927 | #ifdef TC_EOL_IN_INSN | |
5928 | || (insn && TC_EOL_IN_INSN (s)) | |
5929 | #endif | |
7592cfd7 NC |
5930 | /* PR 6926: When we are parsing the body of a macro the sequence |
5931 | \@ is special - it refers to the invocation count. If the @ | |
5932 | character happens to be registered as a line-separator character | |
5933 | by the target, then the is_end_of_line[] test above will have | |
5934 | returned true, but we need to ignore the line separating | |
5935 | semantics in this particular case. */ | |
5936 | || (in_macro && inescape && *s == '@') | |
40a4d956 JB |
5937 | ) |
5938 | { | |
5939 | if (mri_string && *s == '\'') | |
5940 | inquote ^= *s; | |
5941 | else if (inescape) | |
5942 | inescape = 0; | |
5943 | else if (*s == '\\') | |
5944 | inescape = 1; | |
5945 | else if (!inquote | |
5946 | ? *s == '"' | |
5947 | #ifdef TC_SINGLE_QUOTE_STRINGS | |
5948 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | |
5949 | #endif | |
5950 | : *s == inquote) | |
5951 | inquote ^= *s; | |
5952 | ++s; | |
5953 | } | |
5954 | if (inquote) | |
5955 | as_warn (_("missing closing `%c'"), inquote); | |
5956 | if (inescape) | |
5957 | as_warn (_("stray `\\'")); | |
5958 | return s; | |
5959 | } | |
5960 | ||
5961 | char * | |
5962 | find_end_of_line (char *s, int mri_string) | |
5963 | { | |
7592cfd7 | 5964 | return _find_end_of_line (s, mri_string, 0, 0); |
40a4d956 | 5965 | } |