Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
f7e42eb4 | 2 | Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
e5604d79 RS |
3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 |
4 | Free Software Foundation, Inc. | |
252b5132 RH |
5 | |
6 | This file is part of GAS, the GNU Assembler. | |
7 | ||
8 | GAS is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GAS is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GAS; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
f0e652b4 | 21 | 02111-1307, USA. */ |
252b5132 | 22 | |
59c871b4 | 23 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). |
041ff4dd NC |
24 | But then, GNU isn't spozed to run on your machine anyway. |
25 | (RMS is so shortsighted sometimes.) */ | |
041ff4dd | 26 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 | 27 | |
252b5132 | 28 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 29 | grow when we do 4361 style flonums. */ |
252b5132 RH |
30 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
31 | ||
47eebc20 | 32 | /* Routines that read assembler source text to build spaghetti in memory. |
252b5132 RH |
33 | Another group of these functions is in the expr.c module. */ |
34 | ||
252b5132 | 35 | #include "as.h" |
3882b010 | 36 | #include "safe-ctype.h" |
252b5132 RH |
37 | #include "subsegs.h" |
38 | #include "sb.h" | |
39 | #include "macro.h" | |
40 | #include "obstack.h" | |
41 | #include "listing.h" | |
42 | #include "ecoff.h" | |
54cfded0 | 43 | #include "dw2gencfi.h" |
252b5132 RH |
44 | |
45 | #ifndef TC_START_LABEL | |
d1a6c242 | 46 | #define TC_START_LABEL(x,y) (x == ':') |
252b5132 RH |
47 | #endif |
48 | ||
8684e216 HPN |
49 | /* Set by the object-format or the target. */ |
50 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
d6415f6c | 51 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
041ff4dd | 52 | do \ |
d6415f6c AM |
53 | { \ |
54 | if ((SIZE) >= 8) \ | |
55 | (P2VAR) = 3; \ | |
56 | else if ((SIZE) >= 4) \ | |
57 | (P2VAR) = 2; \ | |
58 | else if ((SIZE) >= 2) \ | |
59 | (P2VAR) = 1; \ | |
60 | else \ | |
61 | (P2VAR) = 0; \ | |
041ff4dd NC |
62 | } \ |
63 | while (0) | |
8684e216 HPN |
64 | #endif |
65 | ||
041ff4dd | 66 | char *input_line_pointer; /*->next char of source file to parse. */ |
252b5132 RH |
67 | |
68 | #if BITS_PER_CHAR != 8 | |
69 | /* The following table is indexed by[(char)] and will break if | |
70 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
71 | die horribly; | |
72 | #endif | |
73 | ||
74 | #ifndef LEX_AT | |
75 | /* The m88k unfortunately uses @ as a label beginner. */ | |
76 | #define LEX_AT 0 | |
77 | #endif | |
78 | ||
79 | #ifndef LEX_BR | |
80 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
81 | #define LEX_BR 0 | |
82 | #endif | |
83 | ||
84 | #ifndef LEX_PCT | |
85 | /* The Delta 68k assembler permits % inside label names. */ | |
86 | #define LEX_PCT 0 | |
87 | #endif | |
88 | ||
89 | #ifndef LEX_QM | |
90 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
91 | #define LEX_QM 0 | |
92 | #endif | |
93 | ||
58b5739a | 94 | #ifndef LEX_HASH |
800eeca4 JW |
95 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
96 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
97 | #define LEX_HASH 0 |
98 | #endif | |
99 | ||
252b5132 RH |
100 | #ifndef LEX_DOLLAR |
101 | /* The a29k assembler does not permits labels to start with $. */ | |
102 | #define LEX_DOLLAR 3 | |
103 | #endif | |
104 | ||
105 | #ifndef LEX_TILDE | |
106 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
107 | #define LEX_TILDE 0 | |
108 | #endif | |
109 | ||
041ff4dd | 110 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 111 | char lex_type[256] = { |
252b5132 RH |
112 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
113 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 114 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
115 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
116 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
117 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
118 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
124 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
125 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
126 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
127 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
128 | }; | |
129 | ||
041ff4dd NC |
130 | /* In: a character. |
131 | Out: 1 if this character ends a line. */ | |
ef99799a | 132 | char is_end_of_line[256] = { |
252b5132 | 133 | #ifdef CR_EOL |
b75c0c92 | 134 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 135 | #else |
b75c0c92 | 136 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 137 | #endif |
b75c0c92 AM |
138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
150 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
151 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
152 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 153 | }; |
252b5132 | 154 | |
a8a3b3b2 | 155 | #ifndef TC_CASE_SENSITIVE |
37d8bb27 NC |
156 | char original_case_string[128]; |
157 | #endif | |
158 | ||
041ff4dd | 159 | /* Functions private to this file. */ |
252b5132 | 160 | |
041ff4dd NC |
161 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
162 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 163 | |
041ff4dd NC |
164 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
165 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
166 | internals manual. */ | |
252b5132 RH |
167 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
168 | ||
041ff4dd | 169 | /* Variables for handling include file directory table. */ |
252b5132 | 170 | |
041ff4dd NC |
171 | /* Table of pointers to directories to search for .include's. */ |
172 | char **include_dirs; | |
173 | ||
174 | /* How many are in the table. */ | |
175 | int include_dir_count; | |
176 | ||
177 | /* Length of longest in table. */ | |
178 | int include_dir_maxlen = 1; | |
252b5132 RH |
179 | |
180 | #ifndef WORKING_DOT_WORD | |
181 | struct broken_word *broken_words; | |
182 | int new_broken_words; | |
183 | #endif | |
184 | ||
185 | /* The current offset into the absolute section. We don't try to | |
186 | build frags in the absolute section, since no data can be stored | |
187 | there. We just keep track of the current offset. */ | |
188 | addressT abs_section_offset; | |
189 | ||
190 | /* If this line had an MRI style label, it is stored in this variable. | |
191 | This is used by some of the MRI pseudo-ops. */ | |
192 | symbolS *line_label; | |
193 | ||
194 | /* This global variable is used to support MRI common sections. We | |
195 | translate such sections into a common symbol. This variable is | |
196 | non-NULL when we are in an MRI common section. */ | |
197 | symbolS *mri_common_symbol; | |
198 | ||
199 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
200 | need to align to an even byte boundary unless the next pseudo-op is | |
201 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
202 | may be needed. */ | |
203 | static int mri_pending_align; | |
204 | ||
205 | #ifndef NO_LISTING | |
206 | #ifdef OBJ_ELF | |
207 | /* This variable is set to be non-zero if the next string we see might | |
208 | be the name of the source file in DWARF debugging information. See | |
209 | the comment in emit_expr for the format we look for. */ | |
210 | static int dwarf_file_string; | |
211 | #endif | |
212 | #endif | |
213 | ||
39e6acbd KH |
214 | static void do_align (int, char *, int, int); |
215 | static void s_align (int, int); | |
caa32fe5 | 216 | static void s_altmacro (int); |
057f53c1 | 217 | static void s_bad_end (int); |
39e6acbd | 218 | static int hex_float (int, char *); |
39e6acbd KH |
219 | static segT get_known_segmented_expression (expressionS * expP); |
220 | static void pobegin (void); | |
221 | static int get_line_sb (sb *); | |
222 | static void generate_file_debug (void); | |
252b5132 | 223 | \f |
252b5132 | 224 | void |
39e6acbd | 225 | read_begin (void) |
252b5132 RH |
226 | { |
227 | const char *p; | |
228 | ||
229 | pobegin (); | |
230 | obj_read_begin_hook (); | |
231 | ||
232 | /* Something close -- but not too close -- to a multiple of 1024. | |
233 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
234 | obstack_begin (¬es, chunksize); | |
235 | obstack_begin (&cond_obstack, chunksize); | |
236 | ||
041ff4dd | 237 | /* Use machine dependent syntax. */ |
252b5132 RH |
238 | for (p = line_separator_chars; *p; p++) |
239 | is_end_of_line[(unsigned char) *p] = 1; | |
041ff4dd | 240 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
241 | |
242 | if (flag_mri) | |
243 | lex_type['?'] = 3; | |
244 | } | |
245 | \f | |
cc1bc22a AM |
246 | #ifndef TC_ADDRESS_BYTES |
247 | #ifdef BFD_ASSEMBLER | |
248 | #define TC_ADDRESS_BYTES address_bytes | |
249 | ||
250 | static inline int | |
251 | address_bytes (void) | |
252 | { | |
253 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | |
254 | contain an address. */ | |
255 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | |
256 | n |= n >> 1; | |
257 | n |= n >> 2; | |
258 | n += 1; | |
259 | return n; | |
260 | } | |
261 | #endif | |
262 | #endif | |
263 | ||
041ff4dd | 264 | /* Set up pseudo-op tables. */ |
252b5132 RH |
265 | |
266 | static struct hash_control *po_hash; | |
267 | ||
ef99799a | 268 | static const pseudo_typeS potable[] = { |
252b5132 RH |
269 | {"abort", s_abort, 0}, |
270 | {"align", s_align_ptwo, 0}, | |
caa32fe5 | 271 | {"altmacro", s_altmacro, 1}, |
252b5132 RH |
272 | {"ascii", stringer, 0}, |
273 | {"asciz", stringer, 1}, | |
274 | {"balign", s_align_bytes, 0}, | |
275 | {"balignw", s_align_bytes, -2}, | |
276 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 277 | /* block */ |
252b5132 RH |
278 | {"byte", cons, 1}, |
279 | {"comm", s_comm, 0}, | |
280 | {"common", s_mri_common, 0}, | |
281 | {"common.s", s_mri_common, 1}, | |
282 | {"data", s_data, 0}, | |
283 | {"dc", cons, 2}, | |
cc1bc22a AM |
284 | #ifdef TC_ADDRESS_BYTES |
285 | {"dc.a", cons, 0}, | |
286 | #endif | |
252b5132 RH |
287 | {"dc.b", cons, 1}, |
288 | {"dc.d", float_cons, 'd'}, | |
289 | {"dc.l", cons, 4}, | |
290 | {"dc.s", float_cons, 'f'}, | |
291 | {"dc.w", cons, 2}, | |
292 | {"dc.x", float_cons, 'x'}, | |
293 | {"dcb", s_space, 2}, | |
294 | {"dcb.b", s_space, 1}, | |
295 | {"dcb.d", s_float_space, 'd'}, | |
296 | {"dcb.l", s_space, 4}, | |
297 | {"dcb.s", s_float_space, 'f'}, | |
298 | {"dcb.w", s_space, 2}, | |
299 | {"dcb.x", s_float_space, 'x'}, | |
300 | {"ds", s_space, 2}, | |
301 | {"ds.b", s_space, 1}, | |
302 | {"ds.d", s_space, 8}, | |
303 | {"ds.l", s_space, 4}, | |
304 | {"ds.p", s_space, 12}, | |
305 | {"ds.s", s_space, 4}, | |
306 | {"ds.w", s_space, 2}, | |
307 | {"ds.x", s_space, 12}, | |
308 | {"debug", s_ignore, 0}, | |
309 | #ifdef S_SET_DESC | |
310 | {"desc", s_desc, 0}, | |
311 | #endif | |
041ff4dd | 312 | /* dim */ |
252b5132 | 313 | {"double", float_cons, 'd'}, |
041ff4dd NC |
314 | /* dsect */ |
315 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
316 | {"else", s_else, 0}, |
317 | {"elsec", s_else, 0}, | |
3fd9f047 | 318 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
319 | {"end", s_end, 0}, |
320 | {"endc", s_endif, 0}, | |
321 | {"endfunc", s_func, 1}, | |
322 | {"endif", s_endif, 0}, | |
057f53c1 JB |
323 | {"endm", s_bad_end, 0}, |
324 | {"endr", s_bad_end, 1}, | |
041ff4dd | 325 | /* endef */ |
252b5132 RH |
326 | {"equ", s_set, 0}, |
327 | {"equiv", s_set, 1}, | |
328 | {"err", s_err, 0}, | |
d190d046 | 329 | {"error", s_errwarn, 1}, |
252b5132 | 330 | {"exitm", s_mexit, 0}, |
041ff4dd NC |
331 | /* extend */ |
332 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 RH |
333 | {"appfile", s_app_file, 1}, |
334 | {"appline", s_app_line, 0}, | |
335 | {"fail", s_fail, 0}, | |
336 | {"file", s_app_file, 0}, | |
337 | {"fill", s_fill, 0}, | |
338 | {"float", float_cons, 'f'}, | |
339 | {"format", s_ignore, 0}, | |
340 | {"func", s_func, 0}, | |
341 | {"global", s_globl, 0}, | |
342 | {"globl", s_globl, 0}, | |
343 | {"hword", cons, 2}, | |
344 | {"if", s_if, (int) O_ne}, | |
345 | {"ifc", s_ifc, 0}, | |
346 | {"ifdef", s_ifdef, 0}, | |
347 | {"ifeq", s_if, (int) O_eq}, | |
348 | {"ifeqs", s_ifeqs, 0}, | |
349 | {"ifge", s_if, (int) O_ge}, | |
350 | {"ifgt", s_if, (int) O_gt}, | |
351 | {"ifle", s_if, (int) O_le}, | |
352 | {"iflt", s_if, (int) O_lt}, | |
353 | {"ifnc", s_ifc, 1}, | |
354 | {"ifndef", s_ifdef, 1}, | |
355 | {"ifne", s_if, (int) O_ne}, | |
356 | {"ifnes", s_ifeqs, 1}, | |
357 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 358 | {"incbin", s_incbin, 0}, |
252b5132 RH |
359 | {"include", s_include, 0}, |
360 | {"int", cons, 4}, | |
361 | {"irp", s_irp, 0}, | |
362 | {"irep", s_irp, 0}, | |
363 | {"irpc", s_irp, 1}, | |
364 | {"irepc", s_irp, 1}, | |
365 | {"lcomm", s_lcomm, 0}, | |
041ff4dd | 366 | {"lflags", listing_flags, 0}, /* Listing flags. */ |
252b5132 | 367 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 368 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
369 | {"llen", listing_psize, 1}, |
370 | {"long", cons, 4}, | |
371 | {"lsym", s_lsym, 0}, | |
372 | {"macro", s_macro, 0}, | |
373 | {"mexit", s_mexit, 0}, | |
374 | {"mri", s_mri, 0}, | |
375 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
376 | {"name", s_ignore, 0}, | |
caa32fe5 | 377 | {"noaltmacro", s_altmacro, 0}, |
252b5132 | 378 | {"noformat", s_ignore, 0}, |
041ff4dd | 379 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
380 | {"nopage", listing_nopage, 0}, |
381 | {"octa", cons, 16}, | |
382 | {"offset", s_struct, 0}, | |
383 | {"org", s_org, 0}, | |
384 | {"p2align", s_align_ptwo, 0}, | |
385 | {"p2alignw", s_align_ptwo, -2}, | |
386 | {"p2alignl", s_align_ptwo, -4}, | |
387 | {"page", listing_eject, 0}, | |
388 | {"plen", listing_psize, 0}, | |
389 | {"print", s_print, 0}, | |
041ff4dd | 390 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
391 | {"purgem", s_purgem, 0}, |
392 | {"quad", cons, 8}, | |
393 | {"rep", s_rept, 0}, | |
394 | {"rept", s_rept, 0}, | |
395 | {"rva", s_rva, 4}, | |
041ff4dd NC |
396 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
397 | /* scl */ | |
398 | /* sect */ | |
252b5132 RH |
399 | {"set", s_set, 0}, |
400 | {"short", cons, 2}, | |
401 | {"single", float_cons, 'f'}, | |
041ff4dd | 402 | /* size */ |
252b5132 RH |
403 | {"space", s_space, 0}, |
404 | {"skip", s_space, 0}, | |
405 | {"sleb128", s_leb128, 1}, | |
406 | {"spc", s_ignore, 0}, | |
407 | {"stabd", s_stab, 'd'}, | |
408 | {"stabn", s_stab, 'n'}, | |
409 | {"stabs", s_stab, 's'}, | |
410 | {"string", stringer, 1}, | |
411 | {"struct", s_struct, 0}, | |
041ff4dd | 412 | /* tag */ |
252b5132 RH |
413 | {"text", s_text, 0}, |
414 | ||
415 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
416 | won't be able to use it for a while -- probably a year or more. | |
417 | But once this has been released, check with gcc maintainers | |
418 | before deleting it or even changing the spelling. */ | |
419 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
420 | /* If we're folding case -- done for some targets, not necessarily | |
421 | all -- the above string in an input file will be converted to | |
422 | this one. Match it either way... */ | |
423 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
424 | ||
041ff4dd | 425 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 426 | {"ttl", listing_title, 0}, |
041ff4dd | 427 | /* type */ |
252b5132 | 428 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
429 | /* use */ |
430 | /* val */ | |
252b5132 RH |
431 | {"xcom", s_comm, 0}, |
432 | {"xdef", s_globl, 0}, | |
433 | {"xref", s_ignore, 0}, | |
434 | {"xstabs", s_xstab, 's'}, | |
d190d046 | 435 | {"warning", s_errwarn, 0}, |
252b5132 RH |
436 | {"word", cons, 2}, |
437 | {"zero", s_space, 0}, | |
041ff4dd | 438 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
439 | }; |
440 | ||
441 | static int pop_override_ok = 0; | |
442 | static const char *pop_table_name; | |
443 | ||
444 | void | |
39e6acbd | 445 | pop_insert (const pseudo_typeS *table) |
252b5132 RH |
446 | { |
447 | const char *errtxt; | |
448 | const pseudo_typeS *pop; | |
449 | for (pop = table; pop->poc_name; pop++) | |
450 | { | |
451 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
452 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
453 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
454 | errtxt); | |
455 | } | |
456 | } | |
457 | ||
458 | #ifndef md_pop_insert | |
459 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
460 | #endif | |
461 | ||
462 | #ifndef obj_pop_insert | |
463 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
464 | #endif | |
465 | ||
54cfded0 AM |
466 | #ifndef cfi_pop_insert |
467 | #define cfi_pop_insert() pop_insert(cfi_pseudo_table) | |
468 | #endif | |
469 | ||
041ff4dd | 470 | static void |
39e6acbd | 471 | pobegin (void) |
252b5132 RH |
472 | { |
473 | po_hash = hash_new (); | |
474 | ||
041ff4dd | 475 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
476 | pop_table_name = "md"; |
477 | md_pop_insert (); | |
478 | ||
041ff4dd | 479 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
480 | pop_table_name = "obj"; |
481 | pop_override_ok = 1; | |
482 | obj_pop_insert (); | |
483 | ||
041ff4dd | 484 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
485 | pop_table_name = "standard"; |
486 | pop_insert (potable); | |
d6415f6c | 487 | |
54cfded0 AM |
488 | #ifdef TARGET_USE_CFIPOP |
489 | pop_table_name = "cfi"; | |
490 | pop_override_ok = 1; | |
491 | cfi_pop_insert (); | |
492 | #endif | |
252b5132 RH |
493 | } |
494 | \f | |
495 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
496 | if (ignore_input ()) \ | |
497 | { \ | |
041ff4dd | 498 | while (!is_end_of_line[(unsigned char) *input_line_pointer++]) \ |
252b5132 RH |
499 | if (input_line_pointer == buffer_limit) \ |
500 | break; \ | |
501 | continue; \ | |
502 | } | |
503 | ||
252b5132 RH |
504 | /* This function is used when scrubbing the characters between #APP |
505 | and #NO_APP. */ | |
506 | ||
507 | static char *scrub_string; | |
508 | static char *scrub_string_end; | |
509 | ||
510 | static int | |
39e6acbd | 511 | scrub_from_string (char *buf, int buflen) |
252b5132 | 512 | { |
2b47531b ILT |
513 | int copy; |
514 | ||
515 | copy = scrub_string_end - scrub_string; | |
516 | if (copy > buflen) | |
517 | copy = buflen; | |
518 | memcpy (buf, scrub_string, copy); | |
519 | scrub_string += copy; | |
520 | return copy; | |
252b5132 RH |
521 | } |
522 | ||
041ff4dd NC |
523 | /* We read the file, putting things into a web that represents what we |
524 | have been reading. */ | |
525 | void | |
39e6acbd | 526 | read_a_source_file (char *name) |
252b5132 RH |
527 | { |
528 | register char c; | |
041ff4dd | 529 | register char *s; /* String of symbol, '\0' appended. */ |
252b5132 RH |
530 | register int temp; |
531 | pseudo_typeS *pop; | |
532 | ||
4c400d5e AM |
533 | #ifdef WARN_COMMENTS |
534 | found_comment = 0; | |
535 | #endif | |
536 | ||
252b5132 RH |
537 | buffer = input_scrub_new_file (name); |
538 | ||
539 | listing_file (name); | |
540 | listing_newline (NULL); | |
541 | register_dependency (name); | |
542 | ||
543 | /* Generate debugging information before we've read anything in to denote | |
544 | this file as the "main" source file and not a subordinate one | |
545 | (e.g. N_SO vs N_SOL in stabs). */ | |
546 | generate_file_debug (); | |
547 | ||
548 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd NC |
549 | { /* We have another line to parse. */ |
550 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
64e55042 | 551 | |
252b5132 RH |
552 | while (input_line_pointer < buffer_limit) |
553 | { | |
041ff4dd | 554 | /* We have more of this buffer to parse. */ |
252b5132 | 555 | |
041ff4dd NC |
556 | /* We now have input_line_pointer->1st char of next line. |
557 | If input_line_pointer [-1] == '\n' then we just | |
558 | scanned another line: so bump line counters. */ | |
252b5132 RH |
559 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
560 | { | |
561 | #ifdef md_start_line_hook | |
562 | md_start_line_hook (); | |
563 | #endif | |
252b5132 RH |
564 | if (input_line_pointer[-1] == '\n') |
565 | bump_line_counters (); | |
566 | ||
567 | line_label = NULL; | |
568 | ||
abd63a32 | 569 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
570 | { |
571 | /* Text at the start of a line must be a label, we | |
572 | run down and stick a colon in. */ | |
573 | if (is_name_beginner (*input_line_pointer)) | |
574 | { | |
575 | char *line_start = input_line_pointer; | |
576 | char c; | |
577 | int mri_line_macro; | |
578 | ||
579 | LISTING_NEWLINE (); | |
580 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
581 | ||
582 | c = get_symbol_end (); | |
583 | ||
584 | /* In MRI mode, the EQU and MACRO pseudoops must | |
585 | be handled specially. */ | |
586 | mri_line_macro = 0; | |
587 | if (flag_m68k_mri) | |
588 | { | |
589 | char *rest = input_line_pointer + 1; | |
590 | ||
591 | if (*rest == ':') | |
592 | ++rest; | |
593 | if (*rest == ' ' || *rest == '\t') | |
594 | ++rest; | |
595 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
596 | || strncasecmp (rest, "SET", 3) == 0) | |
597 | && (rest[3] == ' ' || rest[3] == '\t')) | |
598 | { | |
599 | input_line_pointer = rest + 3; | |
600 | equals (line_start, | |
601 | strncasecmp (rest, "SET", 3) == 0); | |
602 | continue; | |
603 | } | |
604 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
605 | && (rest[5] == ' ' | |
606 | || rest[5] == '\t' | |
607 | || is_end_of_line[(unsigned char) rest[5]])) | |
608 | mri_line_macro = 1; | |
609 | } | |
610 | ||
611 | /* In MRI mode, we need to handle the MACRO | |
d6415f6c AM |
612 | pseudo-op specially: we don't want to put the |
613 | symbol in the symbol table. */ | |
041ff4dd | 614 | if (!mri_line_macro |
a25c045a | 615 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
616 | && TC_START_LABEL_WITHOUT_COLON(c, |
617 | input_line_pointer) | |
a25c045a | 618 | #endif |
ef99799a | 619 | ) |
252b5132 RH |
620 | line_label = colon (line_start); |
621 | else | |
622 | line_label = symbol_create (line_start, | |
623 | absolute_section, | |
624 | (valueT) 0, | |
625 | &zero_address_frag); | |
626 | ||
627 | *input_line_pointer = c; | |
628 | if (c == ':') | |
629 | input_line_pointer++; | |
630 | } | |
631 | } | |
632 | } | |
633 | ||
47eebc20 | 634 | /* We are at the beginning of a line, or similar place. |
041ff4dd NC |
635 | We expect a well-formed assembler statement. |
636 | A "symbol-name:" is a statement. | |
f0e652b4 | 637 | |
041ff4dd NC |
638 | Depending on what compiler is used, the order of these tests |
639 | may vary to catch most common case 1st. | |
640 | Each test is independent of all other tests at the (top) level. | |
641 | PLEASE make a compiler that doesn't use this assembler. | |
642 | It is crufty to waste a compiler's time encoding things for this | |
643 | assembler, which then wastes more time decoding it. | |
644 | (And communicating via (linear) files is silly! | |
645 | If you must pass stuff, please pass a tree!) */ | |
252b5132 RH |
646 | if ((c = *input_line_pointer++) == '\t' |
647 | || c == ' ' | |
648 | || c == '\f' | |
649 | || c == 0) | |
041ff4dd NC |
650 | c = *input_line_pointer++; |
651 | ||
652 | know (c != ' '); /* No further leading whitespace. */ | |
252b5132 RH |
653 | |
654 | #ifndef NO_LISTING | |
655 | /* If listing is on, and we are expanding a macro, then give | |
656 | the listing code the contents of the expanded line. */ | |
657 | if (listing) | |
658 | { | |
659 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
660 | { | |
661 | char *copy; | |
662 | int len; | |
663 | ||
664 | /* Find the end of the current expanded macro line. */ | |
ef99799a | 665 | for (s = input_line_pointer - 1; *s; ++s) |
252b5132 RH |
666 | if (is_end_of_line[(unsigned char) *s]) |
667 | break; | |
668 | ||
669 | /* Copy it for safe keeping. Also give an indication of | |
670 | how much macro nesting is involved at this point. */ | |
ef99799a | 671 | len = s - (input_line_pointer - 1); |
252b5132 RH |
672 | copy = (char *) xmalloc (len + macro_nest + 2); |
673 | memset (copy, '>', macro_nest); | |
674 | copy[macro_nest] = ' '; | |
041ff4dd NC |
675 | memcpy (copy + macro_nest + 1, input_line_pointer - 1, len); |
676 | copy[macro_nest + 1 + len] = '\0'; | |
252b5132 RH |
677 | |
678 | /* Install the line with the listing facility. */ | |
679 | listing_newline (copy); | |
680 | } | |
681 | else | |
682 | listing_newline (NULL); | |
683 | } | |
684 | #endif | |
041ff4dd NC |
685 | /* C is the 1st significant character. |
686 | Input_line_pointer points after that character. */ | |
252b5132 RH |
687 | if (is_name_beginner (c)) |
688 | { | |
041ff4dd | 689 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
690 | HANDLE_CONDITIONAL_ASSEMBLY (); |
691 | ||
692 | s = --input_line_pointer; | |
041ff4dd NC |
693 | c = get_symbol_end (); /* name's delimiter. */ |
694 | ||
695 | /* C is character after symbol. | |
d6415f6c AM |
696 | That character's place in the input line is now '\0'. |
697 | S points to the beginning of the symbol. | |
698 | [In case of pseudo-op, s->'.'.] | |
699 | Input_line_pointer->'\0' where c was. */ | |
041ff4dd | 700 | if (TC_START_LABEL (c, input_line_pointer)) |
252b5132 RH |
701 | { |
702 | if (flag_m68k_mri) | |
703 | { | |
704 | char *rest = input_line_pointer + 1; | |
705 | ||
706 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
707 | if (*rest == ':') |
708 | ++rest; | |
f0e652b4 | 709 | |
252b5132 RH |
710 | if (*rest == ' ' || *rest == '\t') |
711 | ++rest; | |
f0e652b4 | 712 | |
252b5132 RH |
713 | if ((strncasecmp (rest, "EQU", 3) == 0 |
714 | || strncasecmp (rest, "SET", 3) == 0) | |
715 | && (rest[3] == ' ' || rest[3] == '\t')) | |
716 | { | |
717 | input_line_pointer = rest + 3; | |
718 | equals (s, 1); | |
719 | continue; | |
720 | } | |
721 | } | |
722 | ||
041ff4dd NC |
723 | line_label = colon (s); /* User-defined label. */ |
724 | /* Put ':' back for error messages' sake. */ | |
725 | *input_line_pointer++ = ':'; | |
a645d1eb L |
726 | #ifdef tc_check_label |
727 | tc_check_label (line_label); | |
728 | #endif | |
041ff4dd | 729 | /* Input_line_pointer->after ':'. */ |
252b5132 | 730 | SKIP_WHITESPACE (); |
252b5132 RH |
731 | } |
732 | else if (c == '=' | |
733 | || ((c == ' ' || c == '\t') | |
b5682e56 | 734 | && input_line_pointer[1] == '=')) |
252b5132 RH |
735 | { |
736 | equals (s, 1); | |
737 | demand_empty_rest_of_line (); | |
738 | } | |
739 | else | |
041ff4dd NC |
740 | { |
741 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
742 | pop = NULL; |
743 | ||
a8a3b3b2 | 744 | #ifndef TC_CASE_SENSITIVE |
252b5132 RH |
745 | { |
746 | char *s2 = s; | |
37d8bb27 NC |
747 | |
748 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
749 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 750 | |
252b5132 RH |
751 | while (*s2) |
752 | { | |
3882b010 | 753 | *s2 = TOLOWER (*s2); |
252b5132 RH |
754 | s2++; |
755 | } | |
756 | } | |
757 | #endif | |
abd63a32 | 758 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 RH |
759 | { |
760 | /* The MRI assembler and the m88k use pseudo-ops | |
d6415f6c | 761 | without a period. */ |
252b5132 RH |
762 | pop = (pseudo_typeS *) hash_find (po_hash, s); |
763 | if (pop != NULL && pop->poc_handler == NULL) | |
764 | pop = NULL; | |
765 | } | |
766 | ||
767 | if (pop != NULL | |
041ff4dd | 768 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 769 | { |
041ff4dd | 770 | /* PSEUDO - OP. |
f0e652b4 | 771 | |
d6415f6c AM |
772 | WARNING: c has next char, which may be end-of-line. |
773 | We lookup the pseudo-op table with s+1 because we | |
774 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
775 | |
776 | if (pop == NULL) | |
777 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
e4475e39 NS |
778 | if (pop && !pop->poc_handler) |
779 | pop = NULL; | |
252b5132 RH |
780 | |
781 | /* In MRI mode, we may need to insert an | |
d6415f6c AM |
782 | automatic alignment directive. What a hack |
783 | this is. */ | |
252b5132 RH |
784 | if (mri_pending_align |
785 | && (pop == NULL | |
041ff4dd NC |
786 | || !((pop->poc_handler == cons |
787 | && pop->poc_val == 1) | |
788 | || (pop->poc_handler == s_space | |
789 | && pop->poc_val == 1) | |
252b5132 | 790 | #ifdef tc_conditional_pseudoop |
041ff4dd | 791 | || tc_conditional_pseudoop (pop) |
252b5132 | 792 | #endif |
041ff4dd NC |
793 | || pop->poc_handler == s_if |
794 | || pop->poc_handler == s_ifdef | |
795 | || pop->poc_handler == s_ifc | |
796 | || pop->poc_handler == s_ifeqs | |
797 | || pop->poc_handler == s_else | |
798 | || pop->poc_handler == s_endif | |
799 | || pop->poc_handler == s_globl | |
800 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
801 | { |
802 | do_align (1, (char *) NULL, 0, 0); | |
803 | mri_pending_align = 0; | |
f0e652b4 | 804 | |
252b5132 RH |
805 | if (line_label != NULL) |
806 | { | |
2b47531b | 807 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
808 | S_SET_VALUE (line_label, frag_now_fix ()); |
809 | } | |
810 | } | |
811 | ||
041ff4dd | 812 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
813 | if (pop == NULL) |
814 | { | |
0e389e77 | 815 | as_bad (_("unknown pseudo-op: `%s'"), s); |
252b5132 RH |
816 | *input_line_pointer = c; |
817 | s_ignore (0); | |
818 | continue; | |
819 | } | |
820 | ||
041ff4dd | 821 | /* Put it back for error messages etc. */ |
252b5132 RH |
822 | *input_line_pointer = c; |
823 | /* The following skip of whitespace is compulsory. | |
824 | A well shaped space is sometimes all that separates | |
041ff4dd | 825 | keyword from operands. */ |
252b5132 RH |
826 | if (c == ' ' || c == '\t') |
827 | input_line_pointer++; | |
041ff4dd NC |
828 | |
829 | /* Input_line is restored. | |
d6415f6c AM |
830 | Input_line_pointer->1st non-blank char |
831 | after pseudo-operation. */ | |
252b5132 RH |
832 | (*pop->poc_handler) (pop->poc_val); |
833 | ||
834 | /* If that was .end, just get out now. */ | |
835 | if (pop->poc_handler == s_end) | |
836 | goto quit; | |
837 | } | |
838 | else | |
839 | { | |
1bf67e0d ILT |
840 | int inquote = 0; |
841 | #ifdef QUOTES_IN_INSN | |
842 | int inescape = 0; | |
843 | #endif | |
252b5132 | 844 | |
041ff4dd NC |
845 | /* WARNING: c has char, which may be end-of-line. */ |
846 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 RH |
847 | *input_line_pointer = c; |
848 | while (!is_end_of_line[(unsigned char) *input_line_pointer] | |
849 | || inquote | |
850 | #ifdef TC_EOL_IN_INSN | |
851 | || TC_EOL_IN_INSN (input_line_pointer) | |
852 | #endif | |
853 | ) | |
854 | { | |
855 | if (flag_m68k_mri && *input_line_pointer == '\'') | |
041ff4dd | 856 | inquote = !inquote; |
1c32af22 RH |
857 | #ifdef QUOTES_IN_INSN |
858 | if (inescape) | |
859 | inescape = 0; | |
860 | else if (*input_line_pointer == '"') | |
041ff4dd | 861 | inquote = !inquote; |
1c32af22 RH |
862 | else if (*input_line_pointer == '\\') |
863 | inescape = 1; | |
864 | #endif | |
252b5132 RH |
865 | input_line_pointer++; |
866 | } | |
867 | ||
868 | c = *input_line_pointer; | |
869 | *input_line_pointer = '\0'; | |
870 | ||
871 | generate_lineno_debug (); | |
872 | ||
873 | if (macro_defined) | |
874 | { | |
875 | sb out; | |
876 | const char *err; | |
041ff4dd | 877 | macro_entry *macro; |
252b5132 | 878 | |
fea17916 | 879 | if (check_macro (s, &out, &err, ¯o)) |
252b5132 RH |
880 | { |
881 | if (err != NULL) | |
4c63da97 | 882 | as_bad ("%s", err); |
252b5132 RH |
883 | *input_line_pointer++ = c; |
884 | input_scrub_include_sb (&out, | |
9f10757c | 885 | input_line_pointer, 1); |
252b5132 RH |
886 | sb_kill (&out); |
887 | buffer_limit = | |
888 | input_scrub_next_buffer (&input_line_pointer); | |
9f10757c | 889 | #ifdef md_macro_info |
041ff4dd | 890 | md_macro_info (macro); |
9f10757c | 891 | #endif |
252b5132 RH |
892 | continue; |
893 | } | |
894 | } | |
895 | ||
896 | if (mri_pending_align) | |
897 | { | |
898 | do_align (1, (char *) NULL, 0, 0); | |
899 | mri_pending_align = 0; | |
900 | if (line_label != NULL) | |
901 | { | |
2b47531b | 902 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
903 | S_SET_VALUE (line_label, frag_now_fix ()); |
904 | } | |
905 | } | |
906 | ||
041ff4dd | 907 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
908 | |
909 | *input_line_pointer++ = c; | |
910 | ||
911 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
912 | this instruction. */ |
913 | } | |
914 | } | |
252b5132 | 915 | continue; |
041ff4dd | 916 | } |
252b5132 RH |
917 | |
918 | /* Empty statement? */ | |
919 | if (is_end_of_line[(unsigned char) c]) | |
920 | continue; | |
921 | ||
3882b010 | 922 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 923 | { |
041ff4dd | 924 | /* local label ("4:") */ |
252b5132 RH |
925 | char *backup = input_line_pointer; |
926 | ||
927 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
928 | ||
929 | temp = c - '0'; | |
930 | ||
041ff4dd | 931 | /* Read the whole number. */ |
3882b010 | 932 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
933 | { |
934 | temp = (temp * 10) + *input_line_pointer - '0'; | |
935 | ++input_line_pointer; | |
041ff4dd | 936 | } |
252b5132 RH |
937 | |
938 | if (LOCAL_LABELS_DOLLAR | |
939 | && *input_line_pointer == '$' | |
940 | && *(input_line_pointer + 1) == ':') | |
941 | { | |
942 | input_line_pointer += 2; | |
943 | ||
944 | if (dollar_label_defined (temp)) | |
945 | { | |
946 | as_fatal (_("label \"%d$\" redefined"), temp); | |
947 | } | |
948 | ||
949 | define_dollar_label (temp); | |
950 | colon (dollar_label_name (temp, 0)); | |
951 | continue; | |
952 | } | |
953 | ||
954 | if (LOCAL_LABELS_FB | |
955 | && *input_line_pointer++ == ':') | |
956 | { | |
957 | fb_label_instance_inc (temp); | |
958 | colon (fb_label_name (temp, 0)); | |
959 | continue; | |
960 | } | |
961 | ||
962 | input_line_pointer = backup; | |
963 | } /* local label ("4:") */ | |
964 | ||
965 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 966 | { /* Its a comment. Better say APP or NO_APP. */ |
64e55042 | 967 | sb sbuf; |
252b5132 RH |
968 | char *ends; |
969 | char *new_buf; | |
970 | char *new_tmp; | |
971 | unsigned int new_length; | |
972 | char *tmp_buf = 0; | |
973 | ||
974 | bump_line_counters (); | |
975 | s = input_line_pointer; | |
976 | if (strncmp (s, "APP\n", 4)) | |
977 | continue; /* We ignore it */ | |
978 | s += 4; | |
979 | ||
64e55042 | 980 | sb_new (&sbuf); |
252b5132 RH |
981 | ends = strstr (s, "#NO_APP\n"); |
982 | ||
983 | if (!ends) | |
984 | { | |
985 | unsigned int tmp_len; | |
986 | unsigned int num; | |
987 | ||
988 | /* The end of the #APP wasn't in this buffer. We | |
989 | keep reading in buffers until we find the #NO_APP | |
990 | that goes with this #APP There is one. The specs | |
47eebc20 | 991 | guarantee it... */ |
252b5132 RH |
992 | tmp_len = buffer_limit - s; |
993 | tmp_buf = xmalloc (tmp_len + 1); | |
994 | memcpy (tmp_buf, s, tmp_len); | |
995 | do | |
996 | { | |
997 | new_tmp = input_scrub_next_buffer (&buffer); | |
998 | if (!new_tmp) | |
999 | break; | |
1000 | else | |
1001 | buffer_limit = new_tmp; | |
1002 | input_line_pointer = buffer; | |
1003 | ends = strstr (buffer, "#NO_APP\n"); | |
1004 | if (ends) | |
1005 | num = ends - buffer; | |
1006 | else | |
1007 | num = buffer_limit - buffer; | |
1008 | ||
1009 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
1010 | memcpy (tmp_buf + tmp_len, buffer, num); | |
1011 | tmp_len += num; | |
1012 | } | |
1013 | while (!ends); | |
1014 | ||
1015 | input_line_pointer = ends ? ends + 8 : NULL; | |
1016 | ||
1017 | s = tmp_buf; | |
1018 | ends = s + tmp_len; | |
1019 | ||
1020 | } | |
1021 | else | |
1022 | { | |
1023 | input_line_pointer = ends + 8; | |
1024 | } | |
1025 | ||
1026 | scrub_string = s; | |
1027 | scrub_string_end = ends; | |
1028 | ||
1029 | new_length = ends - s; | |
1030 | new_buf = (char *) xmalloc (new_length); | |
1031 | new_tmp = new_buf; | |
1032 | for (;;) | |
1033 | { | |
1034 | int space; | |
1035 | int size; | |
1036 | ||
1037 | space = (new_buf + new_length) - new_tmp; | |
1038 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1039 | ||
1040 | if (size < space) | |
1041 | { | |
64e55042 | 1042 | new_tmp[size] = 0; |
252b5132 RH |
1043 | break; |
1044 | } | |
1045 | ||
1046 | new_buf = xrealloc (new_buf, new_length + 100); | |
1047 | new_tmp = new_buf + new_length; | |
1048 | new_length += 100; | |
1049 | } | |
1050 | ||
1051 | if (tmp_buf) | |
1052 | free (tmp_buf); | |
f0e652b4 | 1053 | |
64e55042 HPN |
1054 | /* We've "scrubbed" input to the preferred format. In the |
1055 | process we may have consumed the whole of the remaining | |
1056 | file (and included files). We handle this formatted | |
1057 | input similar to that of macro expansion, letting | |
1058 | actual macro expansion (possibly nested) and other | |
1059 | input expansion work. Beware that in messages, line | |
1060 | numbers and possibly file names will be incorrect. */ | |
1061 | sb_add_string (&sbuf, new_buf); | |
1062 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); | |
1063 | sb_kill (&sbuf); | |
1064 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1065 | free (new_buf); | |
252b5132 RH |
1066 | continue; |
1067 | } | |
1068 | ||
1069 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1070 | ||
1071 | #ifdef tc_unrecognized_line | |
1072 | if (tc_unrecognized_line (c)) | |
1073 | continue; | |
1074 | #endif | |
0e389e77 AM |
1075 | input_line_pointer--; |
1076 | /* Report unknown char as ignored. */ | |
c95b35a9 | 1077 | demand_empty_rest_of_line (); |
041ff4dd | 1078 | } |
252b5132 RH |
1079 | |
1080 | #ifdef md_after_pass_hook | |
1081 | md_after_pass_hook (); | |
1082 | #endif | |
041ff4dd | 1083 | } |
252b5132 RH |
1084 | |
1085 | quit: | |
1086 | ||
1087 | #ifdef md_cleanup | |
041ff4dd | 1088 | md_cleanup (); |
252b5132 | 1089 | #endif |
041ff4dd NC |
1090 | /* Close the input file. */ |
1091 | input_scrub_close (); | |
4c400d5e AM |
1092 | #ifdef WARN_COMMENTS |
1093 | { | |
1094 | if (warn_comment && found_comment) | |
1095 | as_warn_where (found_comment_file, found_comment, | |
1096 | "first comment found here"); | |
1097 | } | |
1098 | #endif | |
252b5132 RH |
1099 | } |
1100 | ||
e5604d79 RS |
1101 | /* Convert O_constant expression EXP into the equivalent O_big representation. |
1102 | Take the sign of the number from X_unsigned rather than X_add_number. */ | |
1103 | ||
1104 | static void | |
1105 | convert_to_bignum (expressionS *exp) | |
1106 | { | |
1107 | valueT value; | |
1108 | unsigned int i; | |
1109 | ||
1110 | value = exp->X_add_number; | |
1111 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM; i++) | |
1112 | { | |
1113 | generic_bignum[i] = value & LITTLENUM_MASK; | |
1114 | value >>= LITTLENUM_NUMBER_OF_BITS; | |
1115 | } | |
1116 | /* Add a sequence of sign bits if the top bit of X_add_number is not | |
1117 | the sign of the original value. */ | |
1118 | if ((exp->X_add_number < 0) != !exp->X_unsigned) | |
1119 | generic_bignum[i++] = exp->X_unsigned ? 0 : LITTLENUM_MASK; | |
1120 | exp->X_op = O_big; | |
1121 | exp->X_add_number = i; | |
1122 | } | |
1123 | ||
252b5132 RH |
1124 | /* For most MRI pseudo-ops, the line actually ends at the first |
1125 | nonquoted space. This function looks for that point, stuffs a null | |
1126 | in, and sets *STOPCP to the character that used to be there, and | |
1127 | returns the location. | |
1128 | ||
1129 | Until I hear otherwise, I am going to assume that this is only true | |
1130 | for the m68k MRI assembler. */ | |
1131 | ||
1132 | char * | |
39e6acbd | 1133 | mri_comment_field (char *stopcp) |
252b5132 | 1134 | { |
252b5132 | 1135 | char *s; |
041ff4dd | 1136 | #ifdef TC_M68K |
252b5132 RH |
1137 | int inquote = 0; |
1138 | ||
1139 | know (flag_m68k_mri); | |
1140 | ||
1141 | for (s = input_line_pointer; | |
041ff4dd | 1142 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1143 | || inquote); |
1144 | s++) | |
1145 | { | |
1146 | if (*s == '\'') | |
041ff4dd | 1147 | inquote = !inquote; |
252b5132 | 1148 | } |
252b5132 | 1149 | #else |
041ff4dd NC |
1150 | for (s = input_line_pointer; |
1151 | !is_end_of_line[(unsigned char) *s]; | |
1152 | s++) | |
252b5132 | 1153 | ; |
041ff4dd | 1154 | #endif |
252b5132 RH |
1155 | *stopcp = *s; |
1156 | *s = '\0'; | |
f0e652b4 | 1157 | |
252b5132 | 1158 | return s; |
252b5132 RH |
1159 | } |
1160 | ||
1161 | /* Skip to the end of an MRI comment field. */ | |
1162 | ||
1163 | void | |
39e6acbd | 1164 | mri_comment_end (char *stop, int stopc) |
252b5132 RH |
1165 | { |
1166 | know (flag_mri); | |
1167 | ||
1168 | input_line_pointer = stop; | |
1169 | *stop = stopc; | |
041ff4dd | 1170 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1171 | ++input_line_pointer; |
1172 | } | |
1173 | ||
041ff4dd | 1174 | void |
39e6acbd | 1175 | s_abort (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1176 | { |
1177 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1178 | } | |
1179 | ||
1180 | /* Guts of .align directive. N is the power of two to which to align. | |
1181 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1182 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1183 | the maximum number of characters to skip when doing the alignment, | |
1184 | or 0 if there is no maximum. */ | |
1185 | ||
041ff4dd | 1186 | static void |
39e6acbd | 1187 | do_align (int n, char *fill, int len, int max) |
252b5132 | 1188 | { |
ebeb9253 AM |
1189 | if (now_seg == absolute_section) |
1190 | { | |
1191 | if (fill != NULL) | |
1192 | while (len-- > 0) | |
1193 | if (*fill++ != '\0') | |
1194 | { | |
1195 | as_warn (_("ignoring fill value in absolute section")); | |
1196 | break; | |
1197 | } | |
1198 | fill = NULL; | |
1199 | len = 0; | |
1200 | } | |
1201 | ||
b8861cfb NS |
1202 | #ifdef md_flush_pending_output |
1203 | md_flush_pending_output (); | |
1204 | #endif | |
252b5132 RH |
1205 | #ifdef md_do_align |
1206 | md_do_align (n, fill, len, max, just_record_alignment); | |
1207 | #endif | |
1208 | ||
041ff4dd | 1209 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1210 | if (n != 0 && !need_pass_2) |
1211 | { | |
0a9ef439 RH |
1212 | if (fill == NULL) |
1213 | { | |
1214 | if (subseg_text_p (now_seg)) | |
1215 | frag_align_code (n, max); | |
1216 | else | |
1217 | frag_align (n, 0, max); | |
1218 | } | |
1219 | else if (len <= 1) | |
252b5132 RH |
1220 | frag_align (n, *fill, max); |
1221 | else | |
1222 | frag_align_pattern (n, fill, len, max); | |
1223 | } | |
1224 | ||
1225 | #ifdef md_do_align | |
a6bd2a4f | 1226 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL |
252b5132 RH |
1227 | #endif |
1228 | ||
bea9907b | 1229 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1230 | } |
1231 | ||
1232 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1233 | (in bytes). A negative ARG is the negative of the length of the | |
1234 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1235 | interpreted as the byte boundary, rather than the power of 2. */ | |
1236 | ||
9ebd302d AM |
1237 | #ifdef BFD_ASSEMBLER |
1238 | #define ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1) | |
1239 | #else | |
1240 | #define ALIGN_LIMIT 15 | |
1241 | #endif | |
1242 | ||
252b5132 | 1243 | static void |
39e6acbd | 1244 | s_align (int arg, int bytes_p) |
252b5132 | 1245 | { |
b617dc20 | 1246 | unsigned int align_limit = ALIGN_LIMIT; |
9ebd302d | 1247 | unsigned int align; |
252b5132 RH |
1248 | char *stop = NULL; |
1249 | char stopc; | |
1250 | offsetT fill = 0; | |
1251 | int max; | |
1252 | int fill_p; | |
1253 | ||
1254 | if (flag_mri) | |
1255 | stop = mri_comment_field (&stopc); | |
1256 | ||
1257 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1258 | { | |
1259 | if (arg < 0) | |
1260 | align = 0; | |
1261 | else | |
041ff4dd | 1262 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1263 | } |
1264 | else | |
1265 | { | |
1266 | align = get_absolute_expression (); | |
1267 | SKIP_WHITESPACE (); | |
1268 | } | |
1269 | ||
1270 | if (bytes_p) | |
1271 | { | |
1272 | /* Convert to a power of 2. */ | |
1273 | if (align != 0) | |
1274 | { | |
1275 | unsigned int i; | |
1276 | ||
1277 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1278 | ; | |
1279 | if (align != 1) | |
0e389e77 | 1280 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1281 | |
252b5132 RH |
1282 | align = i; |
1283 | } | |
1284 | } | |
1285 | ||
b617dc20 | 1286 | if (align > align_limit) |
252b5132 | 1287 | { |
b617dc20 | 1288 | align = align_limit; |
0e389e77 | 1289 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1290 | } |
1291 | ||
1292 | if (*input_line_pointer != ',') | |
1293 | { | |
1294 | fill_p = 0; | |
1295 | max = 0; | |
1296 | } | |
1297 | else | |
1298 | { | |
1299 | ++input_line_pointer; | |
1300 | if (*input_line_pointer == ',') | |
1301 | fill_p = 0; | |
1302 | else | |
1303 | { | |
1304 | fill = get_absolute_expression (); | |
1305 | SKIP_WHITESPACE (); | |
1306 | fill_p = 1; | |
1307 | } | |
1308 | ||
1309 | if (*input_line_pointer != ',') | |
1310 | max = 0; | |
1311 | else | |
1312 | { | |
1313 | ++input_line_pointer; | |
1314 | max = get_absolute_expression (); | |
1315 | } | |
1316 | } | |
1317 | ||
041ff4dd | 1318 | if (!fill_p) |
252b5132 RH |
1319 | { |
1320 | if (arg < 0) | |
1321 | as_warn (_("expected fill pattern missing")); | |
1322 | do_align (align, (char *) NULL, 0, max); | |
1323 | } | |
1324 | else | |
1325 | { | |
1326 | int fill_len; | |
1327 | ||
1328 | if (arg >= 0) | |
1329 | fill_len = 1; | |
1330 | else | |
041ff4dd | 1331 | fill_len = -arg; |
252b5132 RH |
1332 | if (fill_len <= 1) |
1333 | { | |
1334 | char fill_char; | |
1335 | ||
1336 | fill_char = fill; | |
1337 | do_align (align, &fill_char, fill_len, max); | |
1338 | } | |
1339 | else | |
1340 | { | |
1341 | char ab[16]; | |
1342 | ||
1343 | if ((size_t) fill_len > sizeof ab) | |
1344 | abort (); | |
1345 | md_number_to_chars (ab, fill, fill_len); | |
1346 | do_align (align, ab, fill_len, max); | |
1347 | } | |
1348 | } | |
1349 | ||
1350 | demand_empty_rest_of_line (); | |
1351 | ||
1352 | if (flag_mri) | |
1353 | mri_comment_end (stop, stopc); | |
1354 | } | |
1355 | ||
1356 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1357 | align to a 4 byte boundary. */ | |
1358 | ||
041ff4dd | 1359 | void |
39e6acbd | 1360 | s_align_bytes (int arg) |
252b5132 RH |
1361 | { |
1362 | s_align (arg, 1); | |
1363 | } | |
1364 | ||
1365 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1366 | to a 2**4 boundary. */ | |
1367 | ||
041ff4dd | 1368 | void |
39e6acbd | 1369 | s_align_ptwo (int arg) |
252b5132 RH |
1370 | { |
1371 | s_align (arg, 0); | |
1372 | } | |
1373 | ||
caa32fe5 NC |
1374 | /* Switch in and out of alternate macro mode. */ |
1375 | ||
1376 | void | |
1377 | s_altmacro (int on) | |
1378 | { | |
1379 | demand_empty_rest_of_line (); | |
1380 | macro_set_alternate (on); | |
1381 | } | |
1382 | ||
e13bab5a AM |
1383 | symbolS * |
1384 | s_comm_internal (int param, | |
1385 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | |
252b5132 | 1386 | { |
e13bab5a AM |
1387 | char *name; |
1388 | char c; | |
1389 | char *p; | |
1390 | offsetT temp, size; | |
1391 | symbolS *symbolP = NULL; | |
252b5132 RH |
1392 | char *stop = NULL; |
1393 | char stopc; | |
e13bab5a | 1394 | expressionS exp; |
252b5132 RH |
1395 | |
1396 | if (flag_mri) | |
1397 | stop = mri_comment_field (&stopc); | |
1398 | ||
1399 | name = input_line_pointer; | |
1400 | c = get_symbol_end (); | |
041ff4dd | 1401 | /* Just after name is now '\0'. */ |
252b5132 RH |
1402 | p = input_line_pointer; |
1403 | *p = c; | |
0e389e77 AM |
1404 | |
1405 | if (name == p) | |
1406 | { | |
1407 | as_bad (_("expected symbol name")); | |
1408 | discard_rest_of_line (); | |
e13bab5a | 1409 | goto out; |
0e389e77 AM |
1410 | } |
1411 | ||
252b5132 | 1412 | SKIP_WHITESPACE (); |
f0e652b4 | 1413 | |
e13bab5a AM |
1414 | /* Accept an optional comma after the name. The comma used to be |
1415 | required, but Irix 5 cc does not generate it for .lcomm. */ | |
1416 | if (*input_line_pointer == ',') | |
1417 | input_line_pointer++; | |
1418 | ||
e13bab5a AM |
1419 | temp = get_absolute_expr (&exp); |
1420 | size = temp; | |
1421 | #ifdef BFD_ASSEMBLER | |
1422 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; | |
1423 | #endif | |
1424 | if (exp.X_op == O_absent) | |
252b5132 | 1425 | { |
e13bab5a | 1426 | as_bad (_("missing size expression")); |
252b5132 | 1427 | ignore_rest_of_line (); |
e13bab5a | 1428 | goto out; |
252b5132 | 1429 | } |
e13bab5a | 1430 | else if (temp != size || !exp.X_unsigned) |
252b5132 | 1431 | { |
e13bab5a | 1432 | as_warn (_("size (%ld) out of range, ignored"), (long) temp); |
252b5132 | 1433 | ignore_rest_of_line (); |
e13bab5a | 1434 | goto out; |
252b5132 | 1435 | } |
f0e652b4 | 1436 | |
a207757e | 1437 | *p = 0; |
252b5132 | 1438 | symbolP = symbol_find_or_make (name); |
041ff4dd | 1439 | if (S_IS_DEFINED (symbolP) && !S_IS_COMMON (symbolP)) |
252b5132 | 1440 | { |
e13bab5a AM |
1441 | symbolP = NULL; |
1442 | as_bad (_("symbol `%s' is already defined"), name); | |
1443 | *p = c; | |
252b5132 | 1444 | ignore_rest_of_line (); |
e13bab5a | 1445 | goto out; |
252b5132 | 1446 | } |
f0e652b4 | 1447 | |
e13bab5a AM |
1448 | size = S_GET_VALUE (symbolP); |
1449 | if (size == 0) | |
1450 | size = temp; | |
1451 | else if (size != temp) | |
1452 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld"), | |
1453 | name, (long) size, (long) temp); | |
1454 | ||
1455 | *p = c; | |
1456 | if (comm_parse_extra != NULL) | |
1457 | symbolP = (*comm_parse_extra) (param, symbolP, size); | |
252b5132 RH |
1458 | else |
1459 | { | |
e13bab5a | 1460 | S_SET_VALUE (symbolP, (valueT) size); |
252b5132 | 1461 | S_SET_EXTERNAL (symbolP); |
252b5132 | 1462 | #ifdef OBJ_VMS |
e13bab5a AM |
1463 | { |
1464 | extern int flag_one; | |
1465 | if (size == 0 || !flag_one) | |
1466 | S_GET_OTHER (symbolP) = const_flag; | |
1467 | } | |
1468 | #endif | |
1469 | } | |
252b5132 | 1470 | |
e13bab5a | 1471 | know (symbolP == NULL || symbolP->sy_frag == &zero_address_frag); |
252b5132 | 1472 | demand_empty_rest_of_line (); |
e13bab5a | 1473 | out: |
252b5132 RH |
1474 | if (flag_mri) |
1475 | mri_comment_end (stop, stopc); | |
e13bab5a AM |
1476 | return symbolP; |
1477 | } | |
1478 | ||
1479 | void | |
1480 | s_comm (int ignore) | |
1481 | { | |
1482 | s_comm_internal (ignore, NULL); | |
1483 | } | |
252b5132 RH |
1484 | |
1485 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1486 | symbol with the appropriate name. We make s_space do the right | |
1487 | thing by increasing the size. */ | |
1488 | ||
1489 | void | |
39e6acbd | 1490 | s_mri_common (int small ATTRIBUTE_UNUSED) |
252b5132 RH |
1491 | { |
1492 | char *name; | |
1493 | char c; | |
1494 | char *alc = NULL; | |
1495 | symbolS *sym; | |
1496 | offsetT align; | |
1497 | char *stop = NULL; | |
1498 | char stopc; | |
1499 | ||
041ff4dd | 1500 | if (!flag_mri) |
252b5132 RH |
1501 | { |
1502 | s_comm (0); | |
1503 | return; | |
1504 | } | |
1505 | ||
1506 | stop = mri_comment_field (&stopc); | |
1507 | ||
1508 | SKIP_WHITESPACE (); | |
1509 | ||
1510 | name = input_line_pointer; | |
3882b010 | 1511 | if (!ISDIGIT (*name)) |
252b5132 RH |
1512 | c = get_symbol_end (); |
1513 | else | |
1514 | { | |
1515 | do | |
1516 | { | |
1517 | ++input_line_pointer; | |
1518 | } | |
3882b010 | 1519 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1520 | |
252b5132 RH |
1521 | c = *input_line_pointer; |
1522 | *input_line_pointer = '\0'; | |
1523 | ||
1524 | if (line_label != NULL) | |
1525 | { | |
1526 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1527 | + (input_line_pointer - name) | |
1528 | + 1); | |
1529 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1530 | name = alc; | |
1531 | } | |
1532 | } | |
1533 | ||
1534 | sym = symbol_find_or_make (name); | |
1535 | *input_line_pointer = c; | |
1536 | if (alc != NULL) | |
1537 | free (alc); | |
1538 | ||
1539 | if (*input_line_pointer != ',') | |
1540 | align = 0; | |
1541 | else | |
1542 | { | |
1543 | ++input_line_pointer; | |
1544 | align = get_absolute_expression (); | |
1545 | } | |
1546 | ||
041ff4dd | 1547 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1548 | { |
0e389e77 | 1549 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1550 | ignore_rest_of_line (); |
1551 | mri_comment_end (stop, stopc); | |
1552 | return; | |
1553 | } | |
1554 | ||
1555 | S_SET_EXTERNAL (sym); | |
1556 | mri_common_symbol = sym; | |
1557 | ||
1558 | #ifdef S_SET_ALIGN | |
1559 | if (align != 0) | |
1560 | S_SET_ALIGN (sym, align); | |
1561 | #endif | |
1562 | ||
1563 | if (line_label != NULL) | |
1564 | { | |
2b47531b ILT |
1565 | expressionS exp; |
1566 | exp.X_op = O_symbol; | |
1567 | exp.X_add_symbol = sym; | |
1568 | exp.X_add_number = 0; | |
1569 | symbol_set_value_expression (line_label, &exp); | |
1570 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1571 | S_SET_SEGMENT (line_label, expr_section); |
1572 | } | |
1573 | ||
1574 | /* FIXME: We just ignore the small argument, which distinguishes | |
1575 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1576 | ||
1577 | /* Ignore the type and hptype. */ | |
1578 | if (*input_line_pointer == ',') | |
1579 | input_line_pointer += 2; | |
1580 | if (*input_line_pointer == ',') | |
1581 | input_line_pointer += 2; | |
1582 | ||
1583 | demand_empty_rest_of_line (); | |
1584 | ||
1585 | mri_comment_end (stop, stopc); | |
1586 | } | |
1587 | ||
1588 | void | |
39e6acbd | 1589 | s_data (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1590 | { |
1591 | segT section; | |
1592 | register int temp; | |
1593 | ||
1594 | temp = get_absolute_expression (); | |
1595 | if (flag_readonly_data_in_text) | |
1596 | { | |
1597 | section = text_section; | |
1598 | temp += 1000; | |
1599 | } | |
1600 | else | |
1601 | section = data_section; | |
1602 | ||
1603 | subseg_set (section, (subsegT) temp); | |
1604 | ||
1605 | #ifdef OBJ_VMS | |
1606 | const_flag = 0; | |
1607 | #endif | |
1608 | demand_empty_rest_of_line (); | |
1609 | } | |
1610 | ||
1611 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1612 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1613 | file name. This default definition may be overridden by the object | |
1614 | or CPU specific pseudo-ops. This function is also the default | |
1615 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1616 | .file. */ | |
1617 | ||
ecb4347a | 1618 | void |
f17c130b | 1619 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED) |
ecb4347a DJ |
1620 | { |
1621 | #ifdef LISTING | |
1622 | if (listing) | |
1623 | listing_source_file (file); | |
1624 | #endif | |
1625 | register_dependency (file); | |
1626 | #ifdef obj_app_file | |
c04f5787 | 1627 | obj_app_file (file, appfile); |
ecb4347a DJ |
1628 | #endif |
1629 | } | |
1630 | ||
041ff4dd | 1631 | void |
39e6acbd | 1632 | s_app_file (int appfile) |
252b5132 RH |
1633 | { |
1634 | register char *s; | |
1635 | int length; | |
1636 | ||
041ff4dd | 1637 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1638 | if ((s = demand_copy_string (&length)) != 0) |
1639 | { | |
1640 | /* If this is a fake .appfile, a fake newline was inserted into | |
1641 | the buffer. Passing -2 to new_logical_line tells it to | |
1642 | account for it. */ | |
1643 | int may_omit | |
041ff4dd | 1644 | = (!new_logical_line (s, appfile ? -2 : -1) && appfile); |
252b5132 RH |
1645 | |
1646 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
d6415f6c | 1647 | backquote. */ |
252b5132 RH |
1648 | if (flag_m68k_mri |
1649 | && *input_line_pointer == '\'' | |
1650 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1651 | ++input_line_pointer; | |
1652 | ||
1653 | demand_empty_rest_of_line (); | |
041ff4dd | 1654 | if (!may_omit) |
c04f5787 | 1655 | s_app_file_string (s, appfile); |
252b5132 RH |
1656 | } |
1657 | } | |
1658 | ||
1659 | /* Handle the .appline pseudo-op. This is automatically generated by | |
1660 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1661 | default definition may be overridden by the object or CPU specific | |
1662 | pseudo-ops. */ | |
1663 | ||
1664 | void | |
39e6acbd | 1665 | s_app_line (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1666 | { |
1667 | int l; | |
1668 | ||
1669 | /* The given number is that of the next line. */ | |
1670 | l = get_absolute_expression () - 1; | |
1671 | if (l < 0) | |
1672 | /* Some of the back ends can't deal with non-positive line numbers. | |
1673 | Besides, it's silly. */ | |
0e389e77 | 1674 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1675 | l + 1); |
252b5132 RH |
1676 | else |
1677 | { | |
1678 | new_logical_line ((char *) NULL, l); | |
1679 | #ifdef LISTING | |
1680 | if (listing) | |
1681 | listing_source_line (l); | |
1682 | #endif | |
1683 | } | |
1684 | demand_empty_rest_of_line (); | |
1685 | } | |
1686 | ||
1687 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1688 | read_a_source_file. */ | |
1689 | ||
1690 | void | |
39e6acbd | 1691 | s_end (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1692 | { |
1693 | if (flag_mri) | |
1694 | { | |
1695 | /* The MRI assembler permits the start symbol to follow .end, | |
d6415f6c | 1696 | but we don't support that. */ |
252b5132 | 1697 | SKIP_WHITESPACE (); |
041ff4dd | 1698 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1699 | && *input_line_pointer != '*' |
1700 | && *input_line_pointer != '!') | |
1701 | as_warn (_("start address not supported")); | |
1702 | } | |
1703 | } | |
1704 | ||
1705 | /* Handle the .err pseudo-op. */ | |
1706 | ||
1707 | void | |
39e6acbd | 1708 | s_err (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1709 | { |
1710 | as_bad (_(".err encountered")); | |
1711 | demand_empty_rest_of_line (); | |
d190d046 HPN |
1712 | } |
1713 | ||
1714 | /* Handle the .error and .warning pseudo-ops. */ | |
1715 | ||
1716 | void | |
1717 | s_errwarn (int err) | |
1718 | { | |
1719 | int len; | |
1720 | /* The purpose for the conditional assignment is not to | |
1721 | internationalize the directive itself, but that we need a | |
1722 | self-contained message, one that can be passed like the | |
1723 | demand_copy_C_string return value, and with no assumption on the | |
1724 | location of the name of the directive within the message. */ | |
1725 | char *msg | |
1726 | = (err ? _(".error directive invoked in source file") | |
1727 | : _(".warning directive invoked in source file")); | |
1728 | ||
1729 | if (!is_it_end_of_statement ()) | |
1730 | { | |
1731 | if (*input_line_pointer != '\"') | |
1732 | { | |
1733 | as_bad (_("%s argument must be a string"), | |
1734 | err ? ".error" : ".warning"); | |
1735 | discard_rest_of_line (); | |
1736 | return; | |
1737 | } | |
1738 | ||
1739 | msg = demand_copy_C_string (&len); | |
1740 | if (msg == NULL) | |
1741 | return; | |
1742 | } | |
1743 | ||
1744 | if (err) | |
1745 | as_bad ("%s", msg); | |
1746 | else | |
1747 | as_warn ("%s", msg); | |
1748 | demand_empty_rest_of_line (); | |
252b5132 RH |
1749 | } |
1750 | ||
1751 | /* Handle the MRI fail pseudo-op. */ | |
1752 | ||
1753 | void | |
39e6acbd | 1754 | s_fail (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1755 | { |
1756 | offsetT temp; | |
1757 | char *stop = NULL; | |
1758 | char stopc; | |
1759 | ||
1760 | if (flag_mri) | |
1761 | stop = mri_comment_field (&stopc); | |
1762 | ||
1763 | temp = get_absolute_expression (); | |
1764 | if (temp >= 500) | |
1765 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1766 | else | |
1767 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1768 | ||
1769 | demand_empty_rest_of_line (); | |
1770 | ||
1771 | if (flag_mri) | |
1772 | mri_comment_end (stop, stopc); | |
1773 | } | |
1774 | ||
041ff4dd | 1775 | void |
39e6acbd | 1776 | s_fill (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1777 | { |
1778 | expressionS rep_exp; | |
1779 | long size = 1; | |
1780 | register long fill = 0; | |
1781 | char *p; | |
1782 | ||
1783 | #ifdef md_flush_pending_output | |
1784 | md_flush_pending_output (); | |
1785 | #endif | |
1786 | ||
1787 | get_known_segmented_expression (&rep_exp); | |
1788 | if (*input_line_pointer == ',') | |
1789 | { | |
1790 | input_line_pointer++; | |
1791 | size = get_absolute_expression (); | |
1792 | if (*input_line_pointer == ',') | |
1793 | { | |
1794 | input_line_pointer++; | |
1795 | fill = get_absolute_expression (); | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1800 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1801 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1802 | { | |
0e389e77 | 1803 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
1804 | size = BSD_FILL_SIZE_CROCK_8; |
1805 | } | |
1806 | if (size < 0) | |
1807 | { | |
0e389e77 | 1808 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
1809 | size = 0; |
1810 | } | |
1811 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1812 | { | |
1813 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 1814 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
1815 | size = 0; |
1816 | } | |
1817 | ||
1818 | if (size && !need_pass_2) | |
1819 | { | |
1820 | if (rep_exp.X_op == O_constant) | |
1821 | { | |
1822 | p = frag_var (rs_fill, (int) size, (int) size, | |
1823 | (relax_substateT) 0, (symbolS *) 0, | |
1824 | (offsetT) rep_exp.X_add_number, | |
1825 | (char *) 0); | |
1826 | } | |
1827 | else | |
1828 | { | |
1829 | /* We don't have a constant repeat count, so we can't use | |
1830 | rs_fill. We can get the same results out of rs_space, | |
1831 | but its argument is in bytes, so we must multiply the | |
1832 | repeat count by size. */ | |
1833 | ||
1834 | symbolS *rep_sym; | |
1835 | rep_sym = make_expr_symbol (&rep_exp); | |
1836 | if (size != 1) | |
1837 | { | |
1838 | expressionS size_exp; | |
1839 | size_exp.X_op = O_constant; | |
1840 | size_exp.X_add_number = size; | |
1841 | ||
1842 | rep_exp.X_op = O_multiply; | |
1843 | rep_exp.X_add_symbol = rep_sym; | |
1844 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1845 | rep_exp.X_add_number = 0; | |
1846 | rep_sym = make_expr_symbol (&rep_exp); | |
1847 | } | |
1848 | ||
1849 | p = frag_var (rs_space, (int) size, (int) size, | |
1850 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1851 | } | |
f0e652b4 | 1852 | |
252b5132 | 1853 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 1854 | |
252b5132 | 1855 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
d6415f6c AM |
1856 | flavoured AS. The following bizarre behaviour is to be |
1857 | compatible with above. I guess they tried to take up to 8 | |
1858 | bytes from a 4-byte expression and they forgot to sign | |
1859 | extend. */ | |
252b5132 RH |
1860 | #define BSD_FILL_SIZE_CROCK_4 (4) |
1861 | md_number_to_chars (p, (valueT) fill, | |
1862 | (size > BSD_FILL_SIZE_CROCK_4 | |
1863 | ? BSD_FILL_SIZE_CROCK_4 | |
1864 | : (int) size)); | |
1865 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
d6415f6c AM |
1866 | but emits no error message because it seems a legal thing to do. |
1867 | It is a degenerate case of .fill but could be emitted by a | |
041ff4dd | 1868 | compiler. */ |
252b5132 RH |
1869 | } |
1870 | demand_empty_rest_of_line (); | |
1871 | } | |
1872 | ||
041ff4dd | 1873 | void |
39e6acbd | 1874 | s_globl (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1875 | { |
1876 | char *name; | |
1877 | int c; | |
1878 | symbolS *symbolP; | |
1879 | char *stop = NULL; | |
1880 | char stopc; | |
1881 | ||
1882 | if (flag_mri) | |
1883 | stop = mri_comment_field (&stopc); | |
1884 | ||
1885 | do | |
1886 | { | |
1887 | name = input_line_pointer; | |
1888 | c = get_symbol_end (); | |
1889 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
1890 | S_SET_EXTERNAL (symbolP); |
1891 | ||
252b5132 RH |
1892 | *input_line_pointer = c; |
1893 | SKIP_WHITESPACE (); | |
58b5739a | 1894 | c = *input_line_pointer; |
252b5132 RH |
1895 | if (c == ',') |
1896 | { | |
1897 | input_line_pointer++; | |
1898 | SKIP_WHITESPACE (); | |
0e389e77 | 1899 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1900 | c = '\n'; |
1901 | } | |
1902 | } | |
1903 | while (c == ','); | |
1904 | ||
1905 | demand_empty_rest_of_line (); | |
1906 | ||
1907 | if (flag_mri) | |
1908 | mri_comment_end (stop, stopc); | |
1909 | } | |
1910 | ||
1911 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
1912 | ||
1913 | void | |
39e6acbd | 1914 | s_irp (int irpc) |
252b5132 RH |
1915 | { |
1916 | char *file; | |
1917 | unsigned int line; | |
1918 | sb s; | |
1919 | const char *err; | |
1920 | sb out; | |
1921 | ||
1922 | as_where (&file, &line); | |
1923 | ||
1924 | sb_new (&s); | |
041ff4dd | 1925 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1926 | sb_add_char (&s, *input_line_pointer++); |
1927 | ||
1928 | sb_new (&out); | |
1929 | ||
fea17916 | 1930 | err = expand_irp (irpc, 0, &s, &out, get_line_sb); |
252b5132 RH |
1931 | if (err != NULL) |
1932 | as_bad_where (file, line, "%s", err); | |
1933 | ||
1934 | sb_kill (&s); | |
1935 | ||
9f10757c | 1936 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
1937 | sb_kill (&out); |
1938 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1939 | } | |
1940 | ||
1941 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
1942 | the section to only be linked once. However, this is not supported | |
1943 | by most object file formats. This takes an optional argument, | |
1944 | which is what to do about duplicates. */ | |
1945 | ||
1946 | void | |
39e6acbd | 1947 | s_linkonce (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
1948 | { |
1949 | enum linkonce_type type; | |
1950 | ||
1951 | SKIP_WHITESPACE (); | |
1952 | ||
1953 | type = LINKONCE_DISCARD; | |
1954 | ||
041ff4dd | 1955 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1956 | { |
1957 | char *s; | |
1958 | char c; | |
1959 | ||
1960 | s = input_line_pointer; | |
1961 | c = get_symbol_end (); | |
1962 | if (strcasecmp (s, "discard") == 0) | |
1963 | type = LINKONCE_DISCARD; | |
1964 | else if (strcasecmp (s, "one_only") == 0) | |
1965 | type = LINKONCE_ONE_ONLY; | |
1966 | else if (strcasecmp (s, "same_size") == 0) | |
1967 | type = LINKONCE_SAME_SIZE; | |
1968 | else if (strcasecmp (s, "same_contents") == 0) | |
1969 | type = LINKONCE_SAME_CONTENTS; | |
1970 | else | |
1971 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
1972 | ||
1973 | *input_line_pointer = c; | |
1974 | } | |
1975 | ||
1976 | #ifdef obj_handle_link_once | |
1977 | obj_handle_link_once (type); | |
1978 | #else /* ! defined (obj_handle_link_once) */ | |
1979 | #ifdef BFD_ASSEMBLER | |
1980 | { | |
1981 | flagword flags; | |
1982 | ||
1983 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
1984 | as_warn (_(".linkonce is not supported for this object file format")); | |
1985 | ||
1986 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
1987 | flags |= SEC_LINK_ONCE; | |
1988 | switch (type) | |
1989 | { | |
1990 | default: | |
1991 | abort (); | |
1992 | case LINKONCE_DISCARD: | |
1993 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
1994 | break; | |
1995 | case LINKONCE_ONE_ONLY: | |
1996 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
1997 | break; | |
1998 | case LINKONCE_SAME_SIZE: | |
1999 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
2000 | break; | |
2001 | case LINKONCE_SAME_CONTENTS: | |
2002 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
2003 | break; | |
2004 | } | |
041ff4dd | 2005 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
2006 | as_bad (_("bfd_set_section_flags: %s"), |
2007 | bfd_errmsg (bfd_get_error ())); | |
2008 | } | |
2009 | #else /* ! defined (BFD_ASSEMBLER) */ | |
2010 | as_warn (_(".linkonce is not supported for this object file format")); | |
2011 | #endif /* ! defined (BFD_ASSEMBLER) */ | |
2012 | #endif /* ! defined (obj_handle_link_once) */ | |
2013 | ||
2014 | demand_empty_rest_of_line (); | |
2015 | } | |
2016 | ||
e13bab5a AM |
2017 | void |
2018 | bss_alloc (symbolS *symbolP, addressT size, int align) | |
252b5132 | 2019 | { |
e13bab5a | 2020 | char *pfrag; |
252b5132 RH |
2021 | segT current_seg = now_seg; |
2022 | subsegT current_subseg = now_subseg; | |
252b5132 RH |
2023 | segT bss_seg = bss_section; |
2024 | ||
252b5132 RH |
2025 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
2026 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
2027 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
2028 | { | |
2029 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
e13bab5a | 2030 | if (size <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2031 | { |
2032 | bss_seg = subseg_new (".sbss", 1); | |
2033 | seg_info (bss_seg)->bss = 1; | |
2034 | #ifdef BFD_ASSEMBLER | |
041ff4dd | 2035 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2036 | as_warn (_("error setting flags for \".sbss\": %s"), |
2037 | bfd_errmsg (bfd_get_error ())); | |
2038 | #endif | |
2039 | } | |
2040 | } | |
2041 | #endif | |
e13bab5a | 2042 | subseg_set (bss_seg, 1); |
8684e216 | 2043 | |
e13bab5a | 2044 | if (align) |
041ff4dd | 2045 | { |
e13bab5a AM |
2046 | record_alignment (bss_seg, align); |
2047 | frag_align (align, 0, 0); | |
041ff4dd | 2048 | } |
252b5132 | 2049 | |
e13bab5a AM |
2050 | /* Detach from old frag. */ |
2051 | if (S_GET_SEGMENT (symbolP) == bss_seg) | |
2052 | symbol_get_frag (symbolP)->fr_symbol = NULL; | |
f0e652b4 | 2053 | |
e13bab5a AM |
2054 | symbol_set_frag (symbolP, frag_now); |
2055 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL); | |
2056 | *pfrag = 0; | |
f0e652b4 | 2057 | |
e13bab5a AM |
2058 | #ifdef S_SET_SIZE |
2059 | S_SET_SIZE (symbolP, size); | |
2060 | #endif | |
2061 | S_SET_SEGMENT (symbolP, bss_seg); | |
f0e652b4 | 2062 | |
e13bab5a AM |
2063 | #ifdef OBJ_COFF |
2064 | /* The symbol may already have been created with a preceding | |
2065 | ".globl" directive -- be careful not to step on storage class | |
2066 | in that case. Otherwise, set it to static. */ | |
2067 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | |
2068 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2069 | #endif /* OBJ_COFF */ | |
f0e652b4 | 2070 | |
e13bab5a AM |
2071 | subseg_set (current_seg, current_subseg); |
2072 | } | |
f0e652b4 | 2073 | |
e13bab5a AM |
2074 | offsetT |
2075 | parse_align (int align_bytes) | |
2076 | { | |
2077 | expressionS exp; | |
2078 | addressT align; | |
252b5132 | 2079 | |
e13bab5a AM |
2080 | SKIP_WHITESPACE (); |
2081 | if (*input_line_pointer != ',') | |
2082 | { | |
2083 | no_align: | |
2084 | as_bad (_("expected alignment after size")); | |
2085 | ignore_rest_of_line (); | |
2086 | return -1; | |
2087 | } | |
f0e652b4 | 2088 | |
e13bab5a AM |
2089 | input_line_pointer++; |
2090 | SKIP_WHITESPACE (); | |
f0e652b4 | 2091 | |
e13bab5a AM |
2092 | align = get_absolute_expr (&exp); |
2093 | if (exp.X_op == O_absent) | |
2094 | goto no_align; | |
2095 | ||
2096 | if (!exp.X_unsigned) | |
2097 | { | |
2098 | as_warn (_("alignment negative; 0 assumed")); | |
2099 | align = 0; | |
041ff4dd | 2100 | } |
e13bab5a AM |
2101 | |
2102 | if (align_bytes && align != 0) | |
252b5132 | 2103 | { |
e13bab5a AM |
2104 | /* convert to a power of 2 alignment */ |
2105 | unsigned int alignp2 = 0; | |
2106 | while ((align & 1) == 0) | |
2107 | align >>= 1, ++alignp2; | |
2108 | if (align != 1) | |
252b5132 | 2109 | { |
e13bab5a AM |
2110 | as_bad (_("alignment not a power of 2")); |
2111 | ignore_rest_of_line (); | |
2112 | return -1; | |
252b5132 | 2113 | } |
e13bab5a | 2114 | align = alignp2; |
252b5132 | 2115 | } |
e13bab5a AM |
2116 | return align; |
2117 | } | |
252b5132 | 2118 | |
e13bab5a AM |
2119 | /* Called from s_comm_internal after symbol name and size have been |
2120 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | |
2121 | 1 if this was a ".bss" directive which has a 3rd argument | |
2122 | (alignment as a power of 2), or 2 if this was a ".bss" directive | |
2123 | with alignment in bytes. */ | |
252b5132 | 2124 | |
13c56984 | 2125 | symbolS * |
e13bab5a AM |
2126 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) |
2127 | { | |
2128 | addressT align = 0; | |
252b5132 | 2129 | |
e13bab5a AM |
2130 | if (needs_align) |
2131 | { | |
2132 | align = parse_align (needs_align - 1); | |
2133 | if (align == (addressT) -1) | |
2134 | return NULL; | |
252b5132 RH |
2135 | } |
2136 | else | |
e13bab5a AM |
2137 | /* Assume some objects may require alignment on some systems. */ |
2138 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align); | |
252b5132 | 2139 | |
e13bab5a AM |
2140 | bss_alloc (symbolP, size, align); |
2141 | return symbolP; | |
041ff4dd | 2142 | } |
252b5132 RH |
2143 | |
2144 | void | |
39e6acbd | 2145 | s_lcomm (int needs_align) |
252b5132 | 2146 | { |
e13bab5a | 2147 | s_comm_internal (needs_align, s_lcomm_internal); |
252b5132 RH |
2148 | } |
2149 | ||
041ff4dd | 2150 | void |
39e6acbd | 2151 | s_lcomm_bytes (int needs_align) |
252b5132 | 2152 | { |
e13bab5a | 2153 | s_comm_internal (needs_align * 2, s_lcomm_internal); |
252b5132 RH |
2154 | } |
2155 | ||
041ff4dd | 2156 | void |
39e6acbd | 2157 | s_lsym (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2158 | { |
2159 | register char *name; | |
2160 | register char c; | |
2161 | register char *p; | |
2162 | expressionS exp; | |
2163 | register symbolS *symbolP; | |
2164 | ||
041ff4dd | 2165 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2166 | name = input_line_pointer; |
2167 | c = get_symbol_end (); | |
2168 | p = input_line_pointer; | |
2169 | *p = c; | |
0e389e77 AM |
2170 | |
2171 | if (name == p) | |
2172 | { | |
2173 | as_bad (_("expected symbol name")); | |
2174 | discard_rest_of_line (); | |
2175 | return; | |
2176 | } | |
2177 | ||
252b5132 | 2178 | SKIP_WHITESPACE (); |
f0e652b4 | 2179 | |
252b5132 RH |
2180 | if (*input_line_pointer != ',') |
2181 | { | |
2182 | *p = 0; | |
0e389e77 | 2183 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2184 | *p = c; |
2185 | ignore_rest_of_line (); | |
2186 | return; | |
2187 | } | |
f0e652b4 | 2188 | |
252b5132 RH |
2189 | input_line_pointer++; |
2190 | expression (&exp); | |
f0e652b4 | 2191 | |
252b5132 RH |
2192 | if (exp.X_op != O_constant |
2193 | && exp.X_op != O_register) | |
2194 | { | |
2195 | as_bad (_("bad expression")); | |
2196 | ignore_rest_of_line (); | |
2197 | return; | |
2198 | } | |
f0e652b4 | 2199 | |
252b5132 RH |
2200 | *p = 0; |
2201 | symbolP = symbol_find_or_make (name); | |
2202 | ||
2203 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && | |
2204 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
2205 | those fields, and I can't see when they'd ever be tripped. I | |
2206 | don't think I understand why they were here so I may have | |
2207 | introduced a bug. As recently as 1.37 didn't have this test | |
041ff4dd | 2208 | anyway. xoxorich. */ |
252b5132 RH |
2209 | |
2210 | if (S_GET_SEGMENT (symbolP) == undefined_section | |
2211 | && S_GET_VALUE (symbolP) == 0) | |
2212 | { | |
2213 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2214 | keep the "external" bit. */ |
252b5132 RH |
2215 | S_SET_SEGMENT (symbolP, |
2216 | (exp.X_op == O_constant | |
2217 | ? absolute_section | |
2218 | : reg_section)); | |
2219 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2220 | } | |
2221 | else | |
2222 | { | |
0e389e77 | 2223 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2224 | } |
f0e652b4 | 2225 | |
252b5132 RH |
2226 | *p = c; |
2227 | demand_empty_rest_of_line (); | |
041ff4dd | 2228 | } |
252b5132 | 2229 | |
0822d075 NC |
2230 | /* Read a line into an sb. Returns the character that ended the line |
2231 | or zero if there are no more lines. */ | |
252b5132 RH |
2232 | |
2233 | static int | |
39e6acbd | 2234 | get_line_sb (sb *line) |
252b5132 RH |
2235 | { |
2236 | char quote1, quote2, inquote; | |
0822d075 | 2237 | unsigned char c; |
252b5132 RH |
2238 | |
2239 | if (input_line_pointer[-1] == '\n') | |
2240 | bump_line_counters (); | |
2241 | ||
2242 | if (input_line_pointer >= buffer_limit) | |
2243 | { | |
2244 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2245 | if (buffer_limit == 0) | |
2246 | return 0; | |
2247 | } | |
2248 | ||
2249 | /* If app.c sets any other characters to LEX_IS_STRINGQUOTE, this | |
2250 | code needs to be changed. */ | |
041ff4dd | 2251 | if (!flag_m68k_mri) |
252b5132 RH |
2252 | quote1 = '"'; |
2253 | else | |
2254 | quote1 = '\0'; | |
2255 | ||
2256 | quote2 = '\0'; | |
2257 | if (flag_m68k_mri) | |
2258 | quote2 = '\''; | |
2259 | #ifdef LEX_IS_STRINGQUOTE | |
2260 | quote2 = '\''; | |
2261 | #endif | |
2262 | ||
2263 | inquote = '\0'; | |
f0e652b4 | 2264 | |
0822d075 NC |
2265 | while ((c = * input_line_pointer ++) != 0 |
2266 | && (!is_end_of_line[c] | |
2267 | || (inquote != '\0' && c != '\n'))) | |
252b5132 | 2268 | { |
0822d075 | 2269 | if (inquote == c) |
252b5132 RH |
2270 | inquote = '\0'; |
2271 | else if (inquote == '\0') | |
2272 | { | |
0822d075 | 2273 | if (c == quote1) |
252b5132 | 2274 | inquote = quote1; |
0822d075 | 2275 | else if (c == quote2) |
252b5132 RH |
2276 | inquote = quote2; |
2277 | } | |
f0e652b4 | 2278 | |
0822d075 | 2279 | sb_add_char (line, c); |
252b5132 | 2280 | } |
f0e652b4 | 2281 | |
0822d075 NC |
2282 | /* Don't skip multiple end-of-line characters, because that breaks support |
2283 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | |
2284 | characters but isn't. Instead just skip one end of line character and | |
2285 | return the character skipped so that the caller can re-insert it if | |
2286 | necessary. */ | |
2287 | return c; | |
252b5132 RH |
2288 | } |
2289 | ||
fea17916 | 2290 | /* Define a macro. This is an interface to macro.c. */ |
252b5132 RH |
2291 | |
2292 | void | |
39e6acbd | 2293 | s_macro (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2294 | { |
2295 | char *file; | |
2296 | unsigned int line; | |
2297 | sb s; | |
2298 | sb label; | |
2299 | const char *err; | |
2300 | const char *name; | |
2301 | ||
2302 | as_where (&file, &line); | |
2303 | ||
2304 | sb_new (&s); | |
041ff4dd | 2305 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2306 | sb_add_char (&s, *input_line_pointer++); |
2307 | ||
2308 | sb_new (&label); | |
2309 | if (line_label != NULL) | |
2310 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2311 | ||
2312 | err = define_macro (0, &s, &label, get_line_sb, &name); | |
2313 | if (err != NULL) | |
2314 | as_bad_where (file, line, "%s", err); | |
2315 | else | |
2316 | { | |
2317 | if (line_label != NULL) | |
2318 | { | |
2319 | S_SET_SEGMENT (line_label, undefined_section); | |
2320 | S_SET_VALUE (line_label, 0); | |
2b47531b | 2321 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2322 | } |
2323 | ||
abd63a32 | 2324 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2325 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2326 | || (!flag_m68k_mri |
252b5132 RH |
2327 | && *name == '.' |
2328 | && hash_find (po_hash, name + 1) != NULL)) | |
2329 | as_warn (_("attempt to redefine pseudo-op `%s' ignored"), | |
2330 | name); | |
2331 | } | |
2332 | ||
2333 | sb_kill (&s); | |
2334 | } | |
2335 | ||
2336 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2337 | expansion. */ | |
2338 | ||
2339 | void | |
39e6acbd | 2340 | s_mexit (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2341 | { |
2342 | cond_exit_macro (macro_nest); | |
2343 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2344 | } | |
2345 | ||
2346 | /* Switch in and out of MRI mode. */ | |
2347 | ||
2348 | void | |
39e6acbd | 2349 | s_mri (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2350 | { |
2351 | int on, old_flag; | |
2352 | ||
2353 | on = get_absolute_expression (); | |
2354 | old_flag = flag_mri; | |
2355 | if (on != 0) | |
2356 | { | |
2357 | flag_mri = 1; | |
2358 | #ifdef TC_M68K | |
2359 | flag_m68k_mri = 1; | |
2360 | #endif | |
2361 | macro_mri_mode (1); | |
2362 | } | |
2363 | else | |
2364 | { | |
2365 | flag_mri = 0; | |
abd63a32 | 2366 | #ifdef TC_M68K |
252b5132 | 2367 | flag_m68k_mri = 0; |
abd63a32 | 2368 | #endif |
252b5132 RH |
2369 | macro_mri_mode (0); |
2370 | } | |
2371 | ||
2372 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2373 | update the operator rankings. */ | |
2374 | expr_set_precedence (); | |
2375 | ||
2376 | #ifdef MRI_MODE_CHANGE | |
2377 | if (on != old_flag) | |
2378 | MRI_MODE_CHANGE (on); | |
2379 | #endif | |
2380 | ||
2381 | demand_empty_rest_of_line (); | |
2382 | } | |
2383 | ||
2384 | /* Handle changing the location counter. */ | |
2385 | ||
2386 | static void | |
39e6acbd | 2387 | do_org (segT segment, expressionS *exp, int fill) |
252b5132 RH |
2388 | { |
2389 | if (segment != now_seg && segment != absolute_section) | |
0e389e77 | 2390 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2391 | |
2392 | if (now_seg == absolute_section) | |
2393 | { | |
2394 | if (fill != 0) | |
2395 | as_warn (_("ignoring fill value in absolute section")); | |
2396 | if (exp->X_op != O_constant) | |
2397 | { | |
2398 | as_bad (_("only constant offsets supported in absolute section")); | |
2399 | exp->X_add_number = 0; | |
2400 | } | |
2401 | abs_section_offset = exp->X_add_number; | |
2402 | } | |
2403 | else | |
2404 | { | |
2405 | char *p; | |
2289f85d AM |
2406 | symbolS *sym = exp->X_add_symbol; |
2407 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2408 | |
2289f85d AM |
2409 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2410 | { | |
2411 | /* Handle complex expressions. */ | |
2412 | sym = make_expr_symbol (exp); | |
2413 | off = 0; | |
2414 | } | |
2415 | ||
2416 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2417 | *p = fill; |
2418 | } | |
2419 | } | |
2420 | ||
041ff4dd | 2421 | void |
39e6acbd | 2422 | s_org (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2423 | { |
2424 | register segT segment; | |
2425 | expressionS exp; | |
2426 | register long temp_fill; | |
2427 | ||
2428 | #ifdef md_flush_pending_output | |
2429 | md_flush_pending_output (); | |
2430 | #endif | |
2431 | ||
2432 | /* The m68k MRI assembler has a different meaning for .org. It | |
2433 | means to create an absolute section at a given address. We can't | |
2434 | support that--use a linker script instead. */ | |
2435 | if (flag_m68k_mri) | |
2436 | { | |
2437 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2438 | ignore_rest_of_line (); | |
2439 | return; | |
2440 | } | |
2441 | ||
2442 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2443 | thing as a sub-segment-relative origin. Any absolute origin is | |
2444 | given a warning, then assumed to be segment-relative. Any | |
2445 | segmented origin expression ("foo+42") had better be in the right | |
2446 | segment or the .org is ignored. | |
2447 | ||
2448 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2449 | we never know sub-segment sizes when we are reading code. BSD | |
2450 | will crash trying to emit negative numbers of filler bytes in | |
2451 | certain .orgs. We don't crash, but see as-write for that code. | |
2452 | ||
2453 | Don't make frag if need_pass_2==1. */ | |
2454 | segment = get_known_segmented_expression (&exp); | |
2455 | if (*input_line_pointer == ',') | |
2456 | { | |
2457 | input_line_pointer++; | |
2458 | temp_fill = get_absolute_expression (); | |
2459 | } | |
2460 | else | |
2461 | temp_fill = 0; | |
2462 | ||
2463 | if (!need_pass_2) | |
2464 | do_org (segment, &exp, temp_fill); | |
2465 | ||
2466 | demand_empty_rest_of_line (); | |
041ff4dd | 2467 | } |
252b5132 RH |
2468 | |
2469 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2470 | called by the obj-format routine which handles section changing | |
2471 | when in MRI mode. It will create a new section, and return it. It | |
2472 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
2473 | 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the | |
2474 | flags will be set in the section. */ | |
2475 | ||
2476 | void | |
39e6acbd | 2477 | s_mri_sect (char *type ATTRIBUTE_UNUSED) |
252b5132 RH |
2478 | { |
2479 | #ifdef TC_M68K | |
2480 | ||
2481 | char *name; | |
2482 | char c; | |
2483 | segT seg; | |
2484 | ||
2485 | SKIP_WHITESPACE (); | |
041ff4dd | 2486 | |
252b5132 | 2487 | name = input_line_pointer; |
3882b010 | 2488 | if (!ISDIGIT (*name)) |
252b5132 RH |
2489 | c = get_symbol_end (); |
2490 | else | |
2491 | { | |
2492 | do | |
2493 | { | |
2494 | ++input_line_pointer; | |
2495 | } | |
3882b010 | 2496 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2497 | |
252b5132 RH |
2498 | c = *input_line_pointer; |
2499 | *input_line_pointer = '\0'; | |
2500 | } | |
2501 | ||
2502 | name = xstrdup (name); | |
2503 | ||
2504 | *input_line_pointer = c; | |
2505 | ||
2506 | seg = subseg_new (name, 0); | |
2507 | ||
2508 | if (*input_line_pointer == ',') | |
2509 | { | |
2510 | int align; | |
2511 | ||
2512 | ++input_line_pointer; | |
2513 | align = get_absolute_expression (); | |
2514 | record_alignment (seg, align); | |
2515 | } | |
2516 | ||
2517 | *type = 'C'; | |
2518 | if (*input_line_pointer == ',') | |
2519 | { | |
2520 | c = *++input_line_pointer; | |
3882b010 | 2521 | c = TOUPPER (c); |
252b5132 RH |
2522 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2523 | *type = c; | |
2524 | else | |
2525 | as_bad (_("unrecognized section type")); | |
2526 | ++input_line_pointer; | |
2527 | ||
2528 | #ifdef BFD_ASSEMBLER | |
2529 | { | |
2530 | flagword flags; | |
2531 | ||
2532 | flags = SEC_NO_FLAGS; | |
2533 | if (*type == 'C') | |
2534 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2535 | else if (*type == 'D' || *type == 'M') | |
2536 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2537 | else if (*type == 'R') | |
2538 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2539 | if (flags != SEC_NO_FLAGS) | |
2540 | { | |
041ff4dd | 2541 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2542 | as_warn (_("error setting flags for \"%s\": %s"), |
2543 | bfd_section_name (stdoutput, seg), | |
2544 | bfd_errmsg (bfd_get_error ())); | |
2545 | } | |
2546 | } | |
2547 | #endif | |
2548 | } | |
2549 | ||
2550 | /* Ignore the HP type. */ | |
2551 | if (*input_line_pointer == ',') | |
2552 | input_line_pointer += 2; | |
2553 | ||
2554 | demand_empty_rest_of_line (); | |
2555 | ||
2556 | #else /* ! TC_M68K */ | |
2557 | #ifdef TC_I960 | |
2558 | ||
2559 | char *name; | |
2560 | char c; | |
2561 | segT seg; | |
2562 | ||
2563 | SKIP_WHITESPACE (); | |
2564 | ||
2565 | name = input_line_pointer; | |
2566 | c = get_symbol_end (); | |
2567 | ||
2568 | name = xstrdup (name); | |
2569 | ||
2570 | *input_line_pointer = c; | |
2571 | ||
2572 | seg = subseg_new (name, 0); | |
2573 | ||
2574 | if (*input_line_pointer != ',') | |
2575 | *type = 'C'; | |
2576 | else | |
2577 | { | |
2578 | char *sectype; | |
2579 | ||
2580 | ++input_line_pointer; | |
2581 | SKIP_WHITESPACE (); | |
2582 | sectype = input_line_pointer; | |
2583 | c = get_symbol_end (); | |
2584 | if (*sectype == '\0') | |
2585 | *type = 'C'; | |
2586 | else if (strcasecmp (sectype, "text") == 0) | |
2587 | *type = 'C'; | |
2588 | else if (strcasecmp (sectype, "data") == 0) | |
2589 | *type = 'D'; | |
2590 | else if (strcasecmp (sectype, "romdata") == 0) | |
2591 | *type = 'R'; | |
2592 | else | |
2593 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2594 | *input_line_pointer = c; | |
2595 | } | |
2596 | ||
2597 | if (*input_line_pointer == ',') | |
2598 | { | |
2599 | char *seccmd; | |
2600 | ||
2601 | ++input_line_pointer; | |
2602 | SKIP_WHITESPACE (); | |
2603 | seccmd = input_line_pointer; | |
2604 | c = get_symbol_end (); | |
2605 | if (strcasecmp (seccmd, "absolute") == 0) | |
2606 | { | |
2607 | as_bad (_("absolute sections are not supported")); | |
2608 | *input_line_pointer = c; | |
2609 | ignore_rest_of_line (); | |
2610 | return; | |
2611 | } | |
2612 | else if (strcasecmp (seccmd, "align") == 0) | |
2613 | { | |
2614 | int align; | |
2615 | ||
2616 | *input_line_pointer = c; | |
2617 | align = get_absolute_expression (); | |
2618 | record_alignment (seg, align); | |
2619 | } | |
2620 | else | |
2621 | { | |
2622 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2623 | *input_line_pointer = c; | |
2624 | } | |
2625 | } | |
2626 | ||
041ff4dd | 2627 | demand_empty_rest_of_line (); |
252b5132 RH |
2628 | |
2629 | #else /* ! TC_I960 */ | |
2630 | /* The MRI assembler seems to use different forms of .sect for | |
2631 | different targets. */ | |
2632 | as_bad ("MRI mode not supported for this target"); | |
2633 | ignore_rest_of_line (); | |
2634 | #endif /* ! TC_I960 */ | |
2635 | #endif /* ! TC_M68K */ | |
2636 | } | |
2637 | ||
2638 | /* Handle the .print pseudo-op. */ | |
2639 | ||
2640 | void | |
39e6acbd | 2641 | s_print (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2642 | { |
2643 | char *s; | |
2644 | int len; | |
2645 | ||
2646 | s = demand_copy_C_string (&len); | |
d6415f6c AM |
2647 | if (s != NULL) |
2648 | printf ("%s\n", s); | |
252b5132 RH |
2649 | demand_empty_rest_of_line (); |
2650 | } | |
2651 | ||
2652 | /* Handle the .purgem pseudo-op. */ | |
2653 | ||
2654 | void | |
39e6acbd | 2655 | s_purgem (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2656 | { |
2657 | if (is_it_end_of_statement ()) | |
2658 | { | |
2659 | demand_empty_rest_of_line (); | |
2660 | return; | |
2661 | } | |
2662 | ||
2663 | do | |
2664 | { | |
2665 | char *name; | |
2666 | char c; | |
2667 | ||
2668 | SKIP_WHITESPACE (); | |
2669 | name = input_line_pointer; | |
2670 | c = get_symbol_end (); | |
2671 | delete_macro (name); | |
2672 | *input_line_pointer = c; | |
2673 | SKIP_WHITESPACE (); | |
2674 | } | |
2675 | while (*input_line_pointer++ == ','); | |
2676 | ||
2677 | --input_line_pointer; | |
2678 | demand_empty_rest_of_line (); | |
2679 | } | |
2680 | ||
057f53c1 | 2681 | /* Handle the .endm/.endr pseudo-ops. */ |
252b5132 | 2682 | |
057f53c1 JB |
2683 | static void |
2684 | s_bad_end (int endr) | |
7f28ab9d | 2685 | { |
057f53c1 JB |
2686 | as_warn (_(".end%c encountered without preceeding %s"), |
2687 | endr ? 'r' : 'm', | |
2688 | endr ? ".rept, .irp, or .irpc" : ".macro"); | |
7f28ab9d NC |
2689 | demand_empty_rest_of_line (); |
2690 | } | |
2691 | ||
2692 | /* Handle the .rept pseudo-op. */ | |
2693 | ||
252b5132 | 2694 | void |
39e6acbd | 2695 | s_rept (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
2696 | { |
2697 | int count; | |
252b5132 RH |
2698 | |
2699 | count = get_absolute_expression (); | |
2700 | ||
041ff4dd | 2701 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2702 | } |
2703 | ||
2704 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2705 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2706 | |
2707 | void | |
39e6acbd | 2708 | do_repeat (int count, const char *start, const char *end) |
6dc19fc4 TW |
2709 | { |
2710 | sb one; | |
2711 | sb many; | |
2712 | ||
252b5132 | 2713 | sb_new (&one); |
041ff4dd | 2714 | if (!buffer_and_nest (start, end, &one, get_line_sb)) |
252b5132 | 2715 | { |
6dc19fc4 | 2716 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2717 | return; |
2718 | } | |
2719 | ||
2720 | sb_new (&many); | |
2721 | while (count-- > 0) | |
2722 | sb_add_sb (&many, &one); | |
2723 | ||
2724 | sb_kill (&one); | |
2725 | ||
9f10757c | 2726 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2727 | sb_kill (&many); |
2728 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2729 | } | |
2730 | ||
6dc19fc4 TW |
2731 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
2732 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 2733 | are properly nested. |
6dc19fc4 TW |
2734 | |
2735 | This function makes it easier to implement a premature "break" out of the | |
2736 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 2737 | such as line substitutions. */ |
6dc19fc4 TW |
2738 | |
2739 | void | |
39e6acbd | 2740 | end_repeat (int extra) |
6dc19fc4 TW |
2741 | { |
2742 | cond_exit_macro (macro_nest); | |
2743 | while (extra-- >= 0) | |
2744 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2745 | } | |
2746 | ||
252b5132 RH |
2747 | /* Handle the .equ, .equiv and .set directives. If EQUIV is 1, then |
2748 | this is .equiv, and it is an error if the symbol is already | |
2749 | defined. */ | |
2750 | ||
041ff4dd | 2751 | void |
39e6acbd | 2752 | s_set (int equiv) |
252b5132 RH |
2753 | { |
2754 | register char *name; | |
2755 | register char delim; | |
2756 | register char *end_name; | |
2757 | register symbolS *symbolP; | |
2758 | ||
041ff4dd NC |
2759 | /* Especial apologies for the random logic: |
2760 | this just grew, and could be parsed much more simply! | |
2761 | Dean in haste. */ | |
252b5132 RH |
2762 | name = input_line_pointer; |
2763 | delim = get_symbol_end (); | |
2764 | end_name = input_line_pointer; | |
0e389e77 | 2765 | *end_name = delim; |
409d19c4 | 2766 | |
0e389e77 | 2767 | if (name == end_name) |
409d19c4 AM |
2768 | { |
2769 | as_bad (_("expected symbol name")); | |
409d19c4 AM |
2770 | discard_rest_of_line (); |
2771 | return; | |
2772 | } | |
2773 | ||
252b5132 RH |
2774 | SKIP_WHITESPACE (); |
2775 | ||
2776 | if (*input_line_pointer != ',') | |
2777 | { | |
2778 | *end_name = 0; | |
0e389e77 | 2779 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2780 | *end_name = delim; |
2781 | ignore_rest_of_line (); | |
2782 | return; | |
2783 | } | |
2784 | ||
2785 | input_line_pointer++; | |
2786 | *end_name = 0; | |
2787 | ||
2788 | if (name[0] == '.' && name[1] == '\0') | |
2789 | { | |
041ff4dd | 2790 | /* Turn '. = mumble' into a .org mumble. */ |
252b5132 RH |
2791 | register segT segment; |
2792 | expressionS exp; | |
2793 | ||
2794 | segment = get_known_segmented_expression (&exp); | |
2795 | ||
2796 | if (!need_pass_2) | |
2797 | do_org (segment, &exp, 0); | |
2798 | ||
2799 | *end_name = delim; | |
2800 | return; | |
2801 | } | |
2802 | ||
2803 | if ((symbolP = symbol_find (name)) == NULL | |
2804 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2805 | { | |
2806 | #ifndef NO_LISTING | |
2807 | /* When doing symbol listings, play games with dummy fragments living | |
2808 | outside the normal fragment chain to record the file and line info | |
d6415f6c | 2809 | for this symbol. */ |
252b5132 RH |
2810 | if (listing & LISTING_SYMBOLS) |
2811 | { | |
2812 | extern struct list_info_struct *listing_tail; | |
041ff4dd NC |
2813 | fragS *dummy_frag = (fragS *) xmalloc (sizeof (fragS)); |
2814 | memset (dummy_frag, 0, sizeof (fragS)); | |
252b5132 RH |
2815 | dummy_frag->fr_type = rs_fill; |
2816 | dummy_frag->line = listing_tail; | |
2817 | symbolP = symbol_new (name, undefined_section, 0, dummy_frag); | |
2818 | dummy_frag->fr_symbol = symbolP; | |
2819 | } | |
2820 | else | |
2821 | #endif | |
041ff4dd NC |
2822 | symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag); |
2823 | ||
252b5132 | 2824 | #ifdef OBJ_COFF |
041ff4dd | 2825 | /* "set" symbols are local unless otherwise specified. */ |
252b5132 RH |
2826 | SF_SET_LOCAL (symbolP); |
2827 | #endif /* OBJ_COFF */ | |
041ff4dd | 2828 | } |
252b5132 RH |
2829 | |
2830 | symbol_table_insert (symbolP); | |
2831 | ||
2832 | *end_name = delim; | |
2833 | ||
2834 | if (equiv | |
2835 | && S_IS_DEFINED (symbolP) | |
2836 | && S_GET_SEGMENT (symbolP) != reg_section) | |
0e389e77 | 2837 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP)); |
252b5132 RH |
2838 | |
2839 | pseudo_set (symbolP); | |
2840 | demand_empty_rest_of_line (); | |
041ff4dd | 2841 | } |
252b5132 | 2842 | |
041ff4dd | 2843 | void |
39e6acbd | 2844 | s_space (int mult) |
252b5132 RH |
2845 | { |
2846 | expressionS exp; | |
2847 | expressionS val; | |
2848 | char *p = 0; | |
2849 | char *stop = NULL; | |
2850 | char stopc; | |
2851 | int bytes; | |
2852 | ||
2853 | #ifdef md_flush_pending_output | |
2854 | md_flush_pending_output (); | |
2855 | #endif | |
2856 | ||
2857 | if (flag_mri) | |
2858 | stop = mri_comment_field (&stopc); | |
2859 | ||
2860 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
2861 | this is ds.b. */ | |
2862 | if (flag_m68k_mri && mult > 1) | |
2863 | { | |
2864 | if (now_seg == absolute_section) | |
2865 | { | |
2866 | abs_section_offset += abs_section_offset & 1; | |
2867 | if (line_label != NULL) | |
2868 | S_SET_VALUE (line_label, abs_section_offset); | |
2869 | } | |
2870 | else if (mri_common_symbol != NULL) | |
2871 | { | |
2872 | valueT val; | |
2873 | ||
2874 | val = S_GET_VALUE (mri_common_symbol); | |
2875 | if ((val & 1) != 0) | |
2876 | { | |
2877 | S_SET_VALUE (mri_common_symbol, val + 1); | |
2878 | if (line_label != NULL) | |
2879 | { | |
2b47531b ILT |
2880 | expressionS *symexp; |
2881 | ||
2882 | symexp = symbol_get_value_expression (line_label); | |
2883 | know (symexp->X_op == O_symbol); | |
2884 | know (symexp->X_add_symbol == mri_common_symbol); | |
2885 | symexp->X_add_number += 1; | |
252b5132 RH |
2886 | } |
2887 | } | |
2888 | } | |
2889 | else | |
2890 | { | |
2891 | do_align (1, (char *) NULL, 0, 0); | |
2892 | if (line_label != NULL) | |
2893 | { | |
2b47531b | 2894 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
2895 | S_SET_VALUE (line_label, frag_now_fix ()); |
2896 | } | |
2897 | } | |
2898 | } | |
2899 | ||
2900 | bytes = mult; | |
2901 | ||
2902 | expression (&exp); | |
2903 | ||
2904 | SKIP_WHITESPACE (); | |
2905 | if (*input_line_pointer == ',') | |
2906 | { | |
2907 | ++input_line_pointer; | |
2908 | expression (&val); | |
2909 | } | |
2910 | else | |
2911 | { | |
2912 | val.X_op = O_constant; | |
2913 | val.X_add_number = 0; | |
2914 | } | |
2915 | ||
2916 | if (val.X_op != O_constant | |
2917 | || val.X_add_number < - 0x80 | |
2918 | || val.X_add_number > 0xff | |
2919 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
2920 | { | |
2921 | if (exp.X_op != O_constant) | |
0e389e77 | 2922 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
2923 | else |
2924 | { | |
2925 | offsetT i; | |
2926 | ||
2927 | if (mult == 0) | |
2928 | mult = 1; | |
2929 | bytes = mult * exp.X_add_number; | |
2930 | for (i = 0; i < exp.X_add_number; i++) | |
2931 | emit_expr (&val, mult); | |
2932 | } | |
2933 | } | |
2934 | else | |
2935 | { | |
2936 | if (exp.X_op == O_constant) | |
2937 | { | |
2938 | long repeat; | |
2939 | ||
2940 | repeat = exp.X_add_number; | |
2941 | if (mult) | |
2942 | repeat *= mult; | |
2943 | bytes = repeat; | |
2944 | if (repeat <= 0) | |
2945 | { | |
2d150871 RO |
2946 | if (!flag_mri) |
2947 | as_warn (_(".space repeat count is zero, ignored")); | |
2948 | else if (repeat < 0) | |
252b5132 RH |
2949 | as_warn (_(".space repeat count is negative, ignored")); |
2950 | goto getout; | |
2951 | } | |
2952 | ||
2953 | /* If we are in the absolute section, just bump the offset. */ | |
2954 | if (now_seg == absolute_section) | |
2955 | { | |
2956 | abs_section_offset += repeat; | |
2957 | goto getout; | |
2958 | } | |
2959 | ||
2960 | /* If we are secretly in an MRI common section, then | |
2961 | creating space just increases the size of the common | |
2962 | symbol. */ | |
2963 | if (mri_common_symbol != NULL) | |
2964 | { | |
2965 | S_SET_VALUE (mri_common_symbol, | |
2966 | S_GET_VALUE (mri_common_symbol) + repeat); | |
2967 | goto getout; | |
2968 | } | |
2969 | ||
2970 | if (!need_pass_2) | |
2971 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
2972 | (offsetT) repeat, (char *) 0); | |
2973 | } | |
2974 | else | |
2975 | { | |
2976 | if (now_seg == absolute_section) | |
2977 | { | |
2978 | as_bad (_("space allocation too complex in absolute section")); | |
2979 | subseg_set (text_section, 0); | |
2980 | } | |
f0e652b4 | 2981 | |
252b5132 RH |
2982 | if (mri_common_symbol != NULL) |
2983 | { | |
2984 | as_bad (_("space allocation too complex in common section")); | |
2985 | mri_common_symbol = NULL; | |
2986 | } | |
f0e652b4 | 2987 | |
252b5132 RH |
2988 | if (!need_pass_2) |
2989 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
2990 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
2991 | } | |
2992 | ||
2993 | if (p) | |
2994 | *p = val.X_add_number; | |
2995 | } | |
2996 | ||
2997 | getout: | |
2998 | ||
2999 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3000 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3001 | or dcb.b. */ | |
3002 | if (flag_mri && (bytes & 1) != 0) | |
3003 | mri_pending_align = 1; | |
3004 | ||
3005 | demand_empty_rest_of_line (); | |
3006 | ||
3007 | if (flag_mri) | |
3008 | mri_comment_end (stop, stopc); | |
3009 | } | |
3010 | ||
3011 | /* This is like s_space, but the value is a floating point number with | |
3012 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3013 | friends. */ | |
3014 | ||
3015 | void | |
39e6acbd | 3016 | s_float_space (int float_type) |
252b5132 RH |
3017 | { |
3018 | offsetT count; | |
3019 | int flen; | |
3020 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3021 | char *stop = NULL; | |
3022 | char stopc; | |
3023 | ||
3024 | if (flag_mri) | |
3025 | stop = mri_comment_field (&stopc); | |
3026 | ||
3027 | count = get_absolute_expression (); | |
3028 | ||
3029 | SKIP_WHITESPACE (); | |
3030 | if (*input_line_pointer != ',') | |
3031 | { | |
3032 | as_bad (_("missing value")); | |
3033 | ignore_rest_of_line (); | |
3034 | if (flag_mri) | |
3035 | mri_comment_end (stop, stopc); | |
3036 | return; | |
3037 | } | |
3038 | ||
3039 | ++input_line_pointer; | |
3040 | ||
3041 | SKIP_WHITESPACE (); | |
3042 | ||
3043 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3044 | * letter is legal. */ | |
3045 | if (input_line_pointer[0] == '0' | |
3882b010 | 3046 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3047 | input_line_pointer += 2; |
3048 | ||
3049 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3050 | with the exact digits specified. */ | |
3051 | if (input_line_pointer[0] == ':') | |
3052 | { | |
3053 | flen = hex_float (float_type, temp); | |
3054 | if (flen < 0) | |
3055 | { | |
3056 | ignore_rest_of_line (); | |
3057 | if (flag_mri) | |
3058 | mri_comment_end (stop, stopc); | |
3059 | return; | |
3060 | } | |
3061 | } | |
3062 | else | |
3063 | { | |
3064 | char *err; | |
3065 | ||
3066 | err = md_atof (float_type, temp, &flen); | |
3067 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3068 | know (flen > 0); | |
3069 | if (err) | |
3070 | { | |
0e389e77 | 3071 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3072 | ignore_rest_of_line (); |
3073 | if (flag_mri) | |
3074 | mri_comment_end (stop, stopc); | |
3075 | return; | |
3076 | } | |
3077 | } | |
3078 | ||
3079 | while (--count >= 0) | |
3080 | { | |
3081 | char *p; | |
3082 | ||
3083 | p = frag_more (flen); | |
3084 | memcpy (p, temp, (unsigned int) flen); | |
3085 | } | |
3086 | ||
3087 | demand_empty_rest_of_line (); | |
3088 | ||
3089 | if (flag_mri) | |
3090 | mri_comment_end (stop, stopc); | |
3091 | } | |
3092 | ||
3093 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3094 | ||
3095 | void | |
39e6acbd | 3096 | s_struct (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3097 | { |
3098 | char *stop = NULL; | |
3099 | char stopc; | |
3100 | ||
3101 | if (flag_mri) | |
3102 | stop = mri_comment_field (&stopc); | |
3103 | abs_section_offset = get_absolute_expression (); | |
3104 | subseg_set (absolute_section, 0); | |
3105 | demand_empty_rest_of_line (); | |
3106 | if (flag_mri) | |
3107 | mri_comment_end (stop, stopc); | |
3108 | } | |
3109 | ||
3110 | void | |
39e6acbd | 3111 | s_text (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
3112 | { |
3113 | register int temp; | |
3114 | ||
3115 | temp = get_absolute_expression (); | |
3116 | subseg_set (text_section, (subsegT) temp); | |
3117 | demand_empty_rest_of_line (); | |
3118 | #ifdef OBJ_VMS | |
3119 | const_flag &= ~IN_DEFAULT_SECTION; | |
3120 | #endif | |
041ff4dd | 3121 | } |
252b5132 | 3122 | \f |
c95b35a9 NS |
3123 | |
3124 | /* Verify that we are at the end of a line. If not, issue an error and | |
3125 | skip to EOL. */ | |
3126 | ||
041ff4dd | 3127 | void |
39e6acbd | 3128 | demand_empty_rest_of_line (void) |
252b5132 RH |
3129 | { |
3130 | SKIP_WHITESPACE (); | |
3131 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3132 | input_line_pointer++; |
252b5132 | 3133 | else |
252b5132 | 3134 | { |
3882b010 | 3135 | if (ISPRINT (*input_line_pointer)) |
c95b35a9 | 3136 | as_bad (_("junk at end of line, first unrecognized character is `%c'"), |
0e389e77 | 3137 | *input_line_pointer); |
252b5132 | 3138 | else |
c95b35a9 | 3139 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x"), |
0e389e77 | 3140 | *input_line_pointer); |
c95b35a9 | 3141 | ignore_rest_of_line (); |
252b5132 | 3142 | } |
c95b35a9 NS |
3143 | |
3144 | /* Return pointing just after end-of-line. */ | |
3145 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | |
3146 | } | |
3147 | ||
3148 | /* Silently advance to the end of line. Use this after already having | |
3149 | issued an error about something bad. */ | |
3150 | ||
3151 | void | |
3152 | ignore_rest_of_line (void) | |
3153 | { | |
3154 | while (input_line_pointer < buffer_limit | |
3155 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
3156 | input_line_pointer++; | |
f0e652b4 | 3157 | |
041ff4dd NC |
3158 | input_line_pointer++; |
3159 | ||
3160 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3161 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3162 | } | |
3163 | ||
3164 | void | |
39e6acbd | 3165 | discard_rest_of_line (void) |
252b5132 RH |
3166 | { |
3167 | while (input_line_pointer < buffer_limit | |
041ff4dd NC |
3168 | && !is_end_of_line[(unsigned char) *input_line_pointer]) |
3169 | input_line_pointer++; | |
3170 | ||
3171 | input_line_pointer++; | |
f0e652b4 | 3172 | |
041ff4dd | 3173 | /* Return pointing just after end-of-line. */ |
252b5132 RH |
3174 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3175 | } | |
3176 | ||
041ff4dd | 3177 | /* In: Pointer to a symbol. |
d6415f6c | 3178 | Input_line_pointer->expression. |
f0e652b4 | 3179 | |
041ff4dd | 3180 | Out: Input_line_pointer->just after any whitespace after expression. |
d6415f6c AM |
3181 | Tried to set symbol to value of expression. |
3182 | Will change symbols type, value, and frag; */ | |
041ff4dd | 3183 | |
252b5132 | 3184 | void |
39e6acbd | 3185 | pseudo_set (symbolS *symbolP) |
252b5132 RH |
3186 | { |
3187 | expressionS exp; | |
3188 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3189 | int ext; | |
3190 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3191 | ||
041ff4dd | 3192 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 RH |
3193 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
3194 | ext = S_IS_EXTERNAL (symbolP); | |
3195 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3196 | ||
ce34c373 | 3197 | (void) expression (&exp); |
252b5132 RH |
3198 | |
3199 | if (exp.X_op == O_illegal) | |
0e389e77 | 3200 | as_bad (_("illegal expression")); |
252b5132 | 3201 | else if (exp.X_op == O_absent) |
0e389e77 | 3202 | as_bad (_("missing expression")); |
252b5132 RH |
3203 | else if (exp.X_op == O_big) |
3204 | { | |
3205 | if (exp.X_add_number > 0) | |
0e389e77 | 3206 | as_bad (_("bignum invalid")); |
252b5132 | 3207 | else |
0e389e77 | 3208 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3209 | } |
3210 | else if (exp.X_op == O_subtract | |
252b5132 | 3211 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) |
2b47531b ILT |
3212 | && (symbol_get_frag (exp.X_add_symbol) |
3213 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3214 | { |
3215 | exp.X_op = O_constant; | |
3216 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3217 | - S_GET_VALUE (exp.X_op_symbol)); | |
3218 | } | |
3219 | ||
3220 | switch (exp.X_op) | |
3221 | { | |
3222 | case O_illegal: | |
3223 | case O_absent: | |
3224 | case O_big: | |
3225 | exp.X_add_number = 0; | |
3226 | /* Fall through. */ | |
3227 | case O_constant: | |
3228 | S_SET_SEGMENT (symbolP, absolute_section); | |
3229 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3230 | if (ext) | |
3231 | S_SET_EXTERNAL (symbolP); | |
3232 | else | |
3233 | S_CLEAR_EXTERNAL (symbolP); | |
3234 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3235 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
3236 | if (exp.X_op != O_constant) | |
041ff4dd | 3237 | symbol_set_frag (symbolP, &zero_address_frag); |
252b5132 RH |
3238 | break; |
3239 | ||
3240 | case O_register: | |
3241 | S_SET_SEGMENT (symbolP, reg_section); | |
3242 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2b47531b | 3243 | symbol_set_frag (symbolP, &zero_address_frag); |
252b5132 RH |
3244 | break; |
3245 | ||
3246 | case O_symbol: | |
3247 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section | |
3248 | || exp.X_add_number != 0) | |
2b47531b | 3249 | symbol_set_value_expression (symbolP, &exp); |
53b0d397 | 3250 | else if (symbol_section_p (symbolP)) |
0e389e77 | 3251 | as_bad ("attempt to set value of section symbol"); |
252b5132 RH |
3252 | else |
3253 | { | |
3254 | symbolS *s = exp.X_add_symbol; | |
3255 | ||
3256 | S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s)); | |
3257 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3258 | if (ext) | |
3259 | S_SET_EXTERNAL (symbolP); | |
3260 | else | |
3261 | S_CLEAR_EXTERNAL (symbolP); | |
3262 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3263 | S_SET_VALUE (symbolP, | |
3264 | exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3265 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 RH |
3266 | copy_symbol_attributes (symbolP, s); |
3267 | } | |
3268 | break; | |
3269 | ||
3270 | default: | |
ce34c373 AM |
3271 | /* The value is some complex expression. |
3272 | FIXME: Should we set the segment to anything? */ | |
2b47531b | 3273 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
3274 | break; |
3275 | } | |
3276 | } | |
3277 | \f | |
d6415f6c | 3278 | /* cons() |
f0e652b4 | 3279 | |
041ff4dd NC |
3280 | CONStruct more frag of .bytes, or .words etc. |
3281 | Should need_pass_2 be 1 then emit no frag(s). | |
3282 | This understands EXPRESSIONS. | |
f0e652b4 | 3283 | |
041ff4dd | 3284 | Bug (?) |
f0e652b4 | 3285 | |
041ff4dd NC |
3286 | This has a split personality. We use expression() to read the |
3287 | value. We can detect if the value won't fit in a byte or word. | |
3288 | But we can't detect if expression() discarded significant digits | |
3289 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3290 | |
3291 | /* Select a parser for cons expressions. */ | |
3292 | ||
3293 | /* Some targets need to parse the expression in various fancy ways. | |
3294 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3295 | (for example, the HPPA does this). Otherwise, you can define | |
3296 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3297 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3298 | are defined, which is the normal case, then only simple expressions | |
3299 | are permitted. */ | |
3300 | ||
abd63a32 | 3301 | #ifdef TC_M68K |
252b5132 | 3302 | static void |
39e6acbd | 3303 | parse_mri_cons (expressionS *exp, unsigned int nbytes); |
abd63a32 | 3304 | #endif |
252b5132 RH |
3305 | |
3306 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3307 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3308 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3309 | static void |
39e6acbd | 3310 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3311 | #endif |
3312 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3313 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3314 | static void | |
39e6acbd | 3315 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); |
252b5132 RH |
3316 | #endif |
3317 | ||
3318 | /* If we haven't gotten one yet, just call expression. */ | |
3319 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3320 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3321 | #endif | |
3322 | #endif | |
3323 | ||
cdfbf930 | 3324 | void |
b41b1f95 L |
3325 | do_parse_cons_expression (expressionS *exp, |
3326 | int nbytes ATTRIBUTE_UNUSED) | |
cdfbf930 RH |
3327 | { |
3328 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3329 | } | |
3330 | ||
3331 | ||
041ff4dd NC |
3332 | /* Worker to do .byte etc statements. |
3333 | Clobbers input_line_pointer and checks end-of-line. */ | |
3334 | ||
3335 | static void | |
39e6acbd KH |
3336 | cons_worker (register int nbytes, /* 1=.byte, 2=.word, 4=.long. */ |
3337 | int rva) | |
252b5132 RH |
3338 | { |
3339 | int c; | |
3340 | expressionS exp; | |
3341 | char *stop = NULL; | |
3342 | char stopc; | |
3343 | ||
3344 | #ifdef md_flush_pending_output | |
3345 | md_flush_pending_output (); | |
3346 | #endif | |
3347 | ||
3348 | if (flag_mri) | |
3349 | stop = mri_comment_field (&stopc); | |
3350 | ||
3351 | if (is_it_end_of_statement ()) | |
3352 | { | |
3353 | demand_empty_rest_of_line (); | |
3354 | if (flag_mri) | |
3355 | mri_comment_end (stop, stopc); | |
3356 | return; | |
3357 | } | |
3358 | ||
cc1bc22a AM |
3359 | #ifdef TC_ADDRESS_BYTES |
3360 | if (nbytes == 0) | |
3361 | nbytes = TC_ADDRESS_BYTES (); | |
3362 | #endif | |
3363 | ||
252b5132 RH |
3364 | #ifdef md_cons_align |
3365 | md_cons_align (nbytes); | |
3366 | #endif | |
3367 | ||
3368 | c = 0; | |
3369 | do | |
3370 | { | |
abd63a32 | 3371 | #ifdef TC_M68K |
252b5132 RH |
3372 | if (flag_m68k_mri) |
3373 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3374 | else | |
abd63a32 | 3375 | #endif |
252b5132 RH |
3376 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
3377 | ||
3378 | if (rva) | |
3379 | { | |
3380 | if (exp.X_op == O_symbol) | |
3381 | exp.X_op = O_symbol_rva; | |
3382 | else | |
3383 | as_fatal (_("rva without symbol")); | |
3384 | } | |
3385 | emit_expr (&exp, (unsigned int) nbytes); | |
3386 | ++c; | |
3387 | } | |
3388 | while (*input_line_pointer++ == ','); | |
3389 | ||
3390 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3391 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3392 | or dcb.b. */ | |
3393 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3394 | mri_pending_align = 1; | |
3395 | ||
041ff4dd | 3396 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3397 | |
3398 | demand_empty_rest_of_line (); | |
3399 | ||
3400 | if (flag_mri) | |
3401 | mri_comment_end (stop, stopc); | |
3402 | } | |
3403 | ||
252b5132 | 3404 | void |
39e6acbd | 3405 | cons (int size) |
252b5132 RH |
3406 | { |
3407 | cons_worker (size, 0); | |
3408 | } | |
3409 | ||
041ff4dd | 3410 | void |
39e6acbd | 3411 | s_rva (int size) |
252b5132 RH |
3412 | { |
3413 | cons_worker (size, 1); | |
3414 | } | |
3415 | ||
3416 | /* Put the contents of expression EXP into the object file using | |
3417 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
3418 | ||
3419 | void | |
39e6acbd | 3420 | emit_expr (expressionS *exp, unsigned int nbytes) |
252b5132 RH |
3421 | { |
3422 | operatorT op; | |
3423 | register char *p; | |
3424 | valueT extra_digit = 0; | |
3425 | ||
3426 | /* Don't do anything if we are going to make another pass. */ | |
3427 | if (need_pass_2) | |
3428 | return; | |
3429 | ||
ed7d5d1a AM |
3430 | dot_value = frag_now_fix (); |
3431 | ||
252b5132 RH |
3432 | #ifndef NO_LISTING |
3433 | #ifdef OBJ_ELF | |
3434 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
3435 | appear as a four byte positive constant in the .line section, | |
3436 | followed by a 2 byte 0xffff. Look for that case here. */ | |
3437 | { | |
3438 | static int dwarf_line = -1; | |
3439 | ||
3440 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
3441 | dwarf_line = -1; | |
3442 | else if (dwarf_line >= 0 | |
3443 | && nbytes == 2 | |
3444 | && exp->X_op == O_constant | |
3445 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
3446 | listing_source_line ((unsigned int) dwarf_line); | |
3447 | else if (nbytes == 4 | |
3448 | && exp->X_op == O_constant | |
3449 | && exp->X_add_number >= 0) | |
3450 | dwarf_line = exp->X_add_number; | |
3451 | else | |
3452 | dwarf_line = -1; | |
3453 | } | |
3454 | ||
3455 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
3456 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
3457 | AT_sibling (0x12) followed by a four byte address of the sibling | |
3458 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
3459 | file. We look for that case here. */ | |
3460 | { | |
3461 | static int dwarf_file = 0; | |
3462 | ||
3463 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
3464 | dwarf_file = 0; | |
3465 | else if (dwarf_file == 0 | |
3466 | && nbytes == 2 | |
3467 | && exp->X_op == O_constant | |
3468 | && exp->X_add_number == 0x11) | |
3469 | dwarf_file = 1; | |
3470 | else if (dwarf_file == 1 | |
3471 | && nbytes == 2 | |
3472 | && exp->X_op == O_constant | |
3473 | && exp->X_add_number == 0x12) | |
3474 | dwarf_file = 2; | |
3475 | else if (dwarf_file == 2 | |
3476 | && nbytes == 4) | |
3477 | dwarf_file = 3; | |
3478 | else if (dwarf_file == 3 | |
3479 | && nbytes == 2 | |
3480 | && exp->X_op == O_constant | |
3481 | && exp->X_add_number == 0x38) | |
3482 | dwarf_file = 4; | |
3483 | else | |
3484 | dwarf_file = 0; | |
3485 | ||
3486 | /* The variable dwarf_file_string tells stringer that the string | |
3487 | may be the name of the source file. */ | |
3488 | if (dwarf_file == 4) | |
3489 | dwarf_file_string = 1; | |
3490 | else | |
3491 | dwarf_file_string = 0; | |
3492 | } | |
3493 | #endif | |
3494 | #endif | |
3495 | ||
3496 | if (check_eh_frame (exp, &nbytes)) | |
3497 | return; | |
3498 | ||
3499 | op = exp->X_op; | |
3500 | ||
3501 | /* Allow `.word 0' in the absolute section. */ | |
3502 | if (now_seg == absolute_section) | |
3503 | { | |
3504 | if (op != O_constant || exp->X_add_number != 0) | |
3505 | as_bad (_("attempt to store value in absolute section")); | |
3506 | abs_section_offset += nbytes; | |
3507 | return; | |
3508 | } | |
3509 | ||
3510 | /* Handle a negative bignum. */ | |
3511 | if (op == O_uminus | |
3512 | && exp->X_add_number == 0 | |
2b47531b ILT |
3513 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
3514 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
3515 | { |
3516 | int i; | |
3517 | unsigned long carry; | |
3518 | ||
2b47531b | 3519 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
3520 | |
3521 | /* Negate the bignum: one's complement each digit and add 1. */ | |
3522 | carry = 1; | |
3523 | for (i = 0; i < exp->X_add_number; i++) | |
3524 | { | |
3525 | unsigned long next; | |
3526 | ||
041ff4dd | 3527 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
3528 | & LITTLENUM_MASK) |
3529 | + carry); | |
3530 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3531 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3532 | } | |
3533 | ||
3534 | /* We can ignore any carry out, because it will be handled by | |
3535 | extra_digit if it is needed. */ | |
3536 | ||
3537 | extra_digit = (valueT) -1; | |
3538 | op = O_big; | |
3539 | } | |
3540 | ||
3541 | if (op == O_absent || op == O_illegal) | |
3542 | { | |
3543 | as_warn (_("zero assumed for missing expression")); | |
3544 | exp->X_add_number = 0; | |
3545 | op = O_constant; | |
3546 | } | |
3547 | else if (op == O_big && exp->X_add_number <= 0) | |
3548 | { | |
0e389e77 | 3549 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3550 | exp->X_add_number = 0; |
3551 | op = O_constant; | |
3552 | } | |
3553 | else if (op == O_register) | |
3554 | { | |
3555 | as_warn (_("register value used as expression")); | |
3556 | op = O_constant; | |
3557 | } | |
3558 | ||
3559 | p = frag_more ((int) nbytes); | |
3560 | ||
3561 | #ifndef WORKING_DOT_WORD | |
3562 | /* If we have the difference of two symbols in a word, save it on | |
3563 | the broken_words list. See the code in write.c. */ | |
3564 | if (op == O_subtract && nbytes == 2) | |
3565 | { | |
3566 | struct broken_word *x; | |
3567 | ||
3568 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3569 | x->next_broken_word = broken_words; | |
3570 | broken_words = x; | |
3571 | x->seg = now_seg; | |
3572 | x->subseg = now_subseg; | |
3573 | x->frag = frag_now; | |
3574 | x->word_goes_here = p; | |
3575 | x->dispfrag = 0; | |
3576 | x->add = exp->X_add_symbol; | |
3577 | x->sub = exp->X_op_symbol; | |
3578 | x->addnum = exp->X_add_number; | |
3579 | x->added = 0; | |
dc59a897 | 3580 | x->use_jump = 0; |
252b5132 RH |
3581 | new_broken_words++; |
3582 | return; | |
3583 | } | |
3584 | #endif | |
3585 | ||
3586 | /* If we have an integer, but the number of bytes is too large to | |
3587 | pass to md_number_to_chars, handle it as a bignum. */ | |
3588 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3589 | { | |
e5604d79 RS |
3590 | extra_digit = exp->X_unsigned ? 0 : -1; |
3591 | convert_to_bignum (exp); | |
3592 | op = O_big; | |
252b5132 RH |
3593 | } |
3594 | ||
3595 | if (op == O_constant) | |
3596 | { | |
3597 | register valueT get; | |
3598 | register valueT use; | |
3599 | register valueT mask; | |
3600 | valueT hibit; | |
3601 | register valueT unmask; | |
3602 | ||
3603 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 3604 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
3605 | if (nbytes >= sizeof (valueT)) |
3606 | { | |
3607 | mask = 0; | |
3608 | if (nbytes > sizeof (valueT)) | |
3609 | hibit = 0; | |
3610 | else | |
3611 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3612 | } | |
3613 | else | |
3614 | { | |
041ff4dd | 3615 | /* Don't store these bits. */ |
252b5132 RH |
3616 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
3617 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3618 | } | |
3619 | ||
041ff4dd | 3620 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
3621 | |
3622 | #ifdef NEVER | |
3623 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 3624 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
3625 | #endif |
3626 | ||
3627 | get = exp->X_add_number; | |
3628 | use = get & unmask; | |
3629 | if ((get & mask) != 0 | |
3630 | && ((get & mask) != mask | |
3631 | || (get & hibit) == 0)) | |
041ff4dd | 3632 | { /* Leading bits contain both 0s & 1s. */ |
0e389e77 | 3633 | as_warn (_("value 0x%lx truncated to 0x%lx"), |
252b5132 RH |
3634 | (unsigned long) get, (unsigned long) use); |
3635 | } | |
041ff4dd | 3636 | /* Put bytes in right order. */ |
252b5132 RH |
3637 | md_number_to_chars (p, use, (int) nbytes); |
3638 | } | |
3639 | else if (op == O_big) | |
3640 | { | |
3641 | unsigned int size; | |
3642 | LITTLENUM_TYPE *nums; | |
3643 | ||
3644 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
3645 | ||
3646 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
3647 | if (nbytes < size) | |
3648 | { | |
0e389e77 | 3649 | as_warn (_("bignum truncated to %d bytes"), nbytes); |
252b5132 RH |
3650 | size = nbytes; |
3651 | } | |
3652 | ||
3653 | if (target_big_endian) | |
3654 | { | |
3655 | while (nbytes > size) | |
3656 | { | |
3657 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3658 | nbytes -= CHARS_PER_LITTLENUM; | |
3659 | p += CHARS_PER_LITTLENUM; | |
3660 | } | |
3661 | ||
3662 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 3663 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3664 | { |
3665 | --nums; | |
3666 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3667 | size -= CHARS_PER_LITTLENUM; | |
3668 | p += CHARS_PER_LITTLENUM; | |
3669 | } | |
3670 | } | |
3671 | else | |
3672 | { | |
3673 | nums = generic_bignum; | |
ceac3f62 | 3674 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3675 | { |
3676 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3677 | ++nums; | |
3678 | size -= CHARS_PER_LITTLENUM; | |
3679 | p += CHARS_PER_LITTLENUM; | |
3680 | nbytes -= CHARS_PER_LITTLENUM; | |
3681 | } | |
3682 | ||
ceac3f62 | 3683 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3684 | { |
3685 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3686 | nbytes -= CHARS_PER_LITTLENUM; | |
3687 | p += CHARS_PER_LITTLENUM; | |
3688 | } | |
3689 | } | |
3690 | } | |
3691 | else | |
3692 | { | |
3693 | memset (p, 0, nbytes); | |
3694 | ||
3695 | /* Now we need to generate a fixS to record the symbol value. | |
3696 | This is easy for BFD. For other targets it can be more | |
3697 | complex. For very complex cases (currently, the HPPA and | |
3698 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
3699 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
3700 | the name of the reloc code that should be stored in the fixS. | |
3701 | If neither is defined, the code uses NO_RELOC if it is | |
3702 | defined, and otherwise uses 0. */ | |
3703 | ||
3704 | #ifdef BFD_ASSEMBLER | |
3705 | #ifdef TC_CONS_FIX_NEW | |
3706 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3707 | #else | |
3708 | { | |
3709 | bfd_reloc_code_real_type r; | |
3710 | ||
3711 | switch (nbytes) | |
3712 | { | |
3713 | case 1: | |
3714 | r = BFD_RELOC_8; | |
3715 | break; | |
3716 | case 2: | |
3717 | r = BFD_RELOC_16; | |
3718 | break; | |
3719 | case 4: | |
3720 | r = BFD_RELOC_32; | |
3721 | break; | |
3722 | case 8: | |
3723 | r = BFD_RELOC_64; | |
3724 | break; | |
3725 | default: | |
3726 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
3727 | r = BFD_RELOC_32; | |
3728 | break; | |
3729 | } | |
3730 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, | |
3731 | 0, r); | |
3732 | } | |
3733 | #endif | |
3734 | #else | |
3735 | #ifdef TC_CONS_FIX_NEW | |
3736 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3737 | #else | |
3738 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
3739 | it is defined, otherwise use NO_RELOC if it is defined, | |
3740 | otherwise use 0. */ | |
3741 | #ifndef TC_CONS_RELOC | |
3742 | #ifdef NO_RELOC | |
3743 | #define TC_CONS_RELOC NO_RELOC | |
3744 | #else | |
3745 | #define TC_CONS_RELOC 0 | |
3746 | #endif | |
3747 | #endif | |
3748 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, | |
3749 | TC_CONS_RELOC); | |
3750 | #endif /* TC_CONS_FIX_NEW */ | |
3751 | #endif /* BFD_ASSEMBLER */ | |
3752 | } | |
3753 | } | |
3754 | \f | |
3755 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3756 | ||
3757 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
3758 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3759 | then pack them all together. We do a little better in that we allow | |
3760 | them in words, longs, etc. and we'll pack them in target byte order | |
3761 | for you. | |
3762 | ||
47eebc20 | 3763 | The rules are: pack least significant bit first, if a field doesn't |
252b5132 RH |
3764 | entirely fit, put it in the next unit. Overflowing the bitfield is |
3765 | explicitly *not* even a warning. The bitwidth should be considered | |
3766 | a "mask". | |
3767 | ||
3768 | To use this function the tc-XXX.h file should define | |
3769 | BITFIELD_CONS_EXPRESSIONS. */ | |
3770 | ||
041ff4dd | 3771 | static void |
252b5132 RH |
3772 | parse_bitfield_cons (exp, nbytes) |
3773 | expressionS *exp; | |
3774 | unsigned int nbytes; | |
3775 | { | |
3776 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3777 | char *hold = input_line_pointer; | |
3778 | ||
3779 | (void) expression (exp); | |
3780 | ||
3781 | if (*input_line_pointer == ':') | |
041ff4dd NC |
3782 | { |
3783 | /* Bitfields. */ | |
252b5132 RH |
3784 | long value = 0; |
3785 | ||
3786 | for (;;) | |
3787 | { | |
3788 | unsigned long width; | |
3789 | ||
3790 | if (*input_line_pointer != ':') | |
3791 | { | |
3792 | input_line_pointer = hold; | |
3793 | break; | |
041ff4dd | 3794 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
3795 | |
3796 | /* In the general case, we can't allow | |
3797 | full expressions with symbol | |
3798 | differences and such. The relocation | |
3799 | entries for symbols not defined in this | |
3800 | assembly would require arbitrary field | |
3801 | widths, positions, and masks which most | |
3802 | of our current object formats don't | |
3803 | support. | |
3804 | ||
3805 | In the specific case where a symbol | |
3806 | *is* defined in this assembly, we | |
3807 | *could* build fixups and track it, but | |
3808 | this could lead to confusion for the | |
3809 | backends. I'm lazy. I'll take any | |
3810 | SEG_ABSOLUTE. I think that means that | |
3811 | you can use a previous .set or | |
041ff4dd | 3812 | .equ type symbol. xoxorich. */ |
252b5132 RH |
3813 | |
3814 | if (exp->X_op == O_absent) | |
3815 | { | |
3816 | as_warn (_("using a bit field width of zero")); | |
3817 | exp->X_add_number = 0; | |
3818 | exp->X_op = O_constant; | |
041ff4dd | 3819 | } /* Implied zero width bitfield. */ |
252b5132 RH |
3820 | |
3821 | if (exp->X_op != O_constant) | |
3822 | { | |
3823 | *input_line_pointer = '\0'; | |
3824 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
3825 | *input_line_pointer = ':'; | |
3826 | demand_empty_rest_of_line (); | |
3827 | return; | |
041ff4dd | 3828 | } /* Too complex. */ |
252b5132 RH |
3829 | |
3830 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
3831 | { | |
3832 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
3833 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
3834 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 3835 | } /* Too big. */ |
252b5132 RH |
3836 | |
3837 | if (width > bits_available) | |
3838 | { | |
3839 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
3840 | input_line_pointer = hold; | |
3841 | exp->X_add_number = value; | |
3842 | break; | |
041ff4dd | 3843 | } /* Won't fit. */ |
252b5132 | 3844 | |
ef99799a KH |
3845 | /* Skip ':'. */ |
3846 | hold = ++input_line_pointer; | |
252b5132 RH |
3847 | |
3848 | (void) expression (exp); | |
3849 | if (exp->X_op != O_constant) | |
3850 | { | |
3851 | char cache = *input_line_pointer; | |
3852 | ||
3853 | *input_line_pointer = '\0'; | |
3854 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
3855 | *input_line_pointer = cache; | |
3856 | demand_empty_rest_of_line (); | |
3857 | return; | |
041ff4dd | 3858 | } /* Too complex. */ |
252b5132 RH |
3859 | |
3860 | value |= ((~(-1 << width) & exp->X_add_number) | |
3861 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
3862 | ||
3863 | if ((bits_available -= width) == 0 | |
3864 | || is_it_end_of_statement () | |
3865 | || *input_line_pointer != ',') | |
3866 | { | |
3867 | break; | |
041ff4dd | 3868 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
3869 | |
3870 | hold = ++input_line_pointer; | |
3871 | (void) expression (exp); | |
041ff4dd | 3872 | } |
252b5132 RH |
3873 | |
3874 | exp->X_add_number = value; | |
3875 | exp->X_op = O_constant; | |
3876 | exp->X_unsigned = 1; | |
041ff4dd NC |
3877 | } |
3878 | } | |
252b5132 RH |
3879 | |
3880 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
3881 | \f | |
3882 | /* Handle an MRI style string expression. */ | |
3883 | ||
abd63a32 | 3884 | #ifdef TC_M68K |
252b5132 RH |
3885 | static void |
3886 | parse_mri_cons (exp, nbytes) | |
3887 | expressionS *exp; | |
3888 | unsigned int nbytes; | |
3889 | { | |
3890 | if (*input_line_pointer != '\'' | |
3891 | && (input_line_pointer[1] != '\'' | |
3892 | || (*input_line_pointer != 'A' | |
3893 | && *input_line_pointer != 'E'))) | |
3894 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3895 | else | |
3896 | { | |
3897 | unsigned int scan; | |
3898 | unsigned int result = 0; | |
3899 | ||
3900 | /* An MRI style string. Cut into as many bytes as will fit into | |
3901 | a nbyte chunk, left justify if necessary, and separate with | |
3902 | commas so we can try again later. */ | |
3903 | if (*input_line_pointer == 'A') | |
3904 | ++input_line_pointer; | |
3905 | else if (*input_line_pointer == 'E') | |
3906 | { | |
3907 | as_bad (_("EBCDIC constants are not supported")); | |
3908 | ++input_line_pointer; | |
3909 | } | |
3910 | ||
3911 | input_line_pointer++; | |
3912 | for (scan = 0; scan < nbytes; scan++) | |
3913 | { | |
3914 | if (*input_line_pointer == '\'') | |
3915 | { | |
3916 | if (input_line_pointer[1] == '\'') | |
3917 | { | |
3918 | input_line_pointer++; | |
3919 | } | |
3920 | else | |
3921 | break; | |
3922 | } | |
3923 | result = (result << 8) | (*input_line_pointer++); | |
3924 | } | |
3925 | ||
041ff4dd | 3926 | /* Left justify. */ |
252b5132 RH |
3927 | while (scan < nbytes) |
3928 | { | |
3929 | result <<= 8; | |
3930 | scan++; | |
3931 | } | |
f0e652b4 | 3932 | |
041ff4dd | 3933 | /* Create correct expression. */ |
252b5132 RH |
3934 | exp->X_op = O_constant; |
3935 | exp->X_add_number = result; | |
f0e652b4 | 3936 | |
041ff4dd | 3937 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
3938 | if (input_line_pointer[0] != '\'' || |
3939 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
3940 | { | |
3941 | input_line_pointer -= 2; | |
3942 | input_line_pointer[0] = ','; | |
3943 | input_line_pointer[1] = '\''; | |
3944 | } | |
3945 | else | |
3946 | input_line_pointer++; | |
3947 | } | |
3948 | } | |
abd63a32 | 3949 | #endif /* TC_M68K */ |
252b5132 RH |
3950 | \f |
3951 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3952 | ||
3953 | /* Parse a repeat expression for cons. This is used by the MIPS | |
3954 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
3955 | object file COUNT times. | |
3956 | ||
3957 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
3958 | ||
3959 | static void | |
3960 | parse_repeat_cons (exp, nbytes) | |
3961 | expressionS *exp; | |
3962 | unsigned int nbytes; | |
3963 | { | |
3964 | expressionS count; | |
3965 | register int i; | |
3966 | ||
3967 | expression (exp); | |
3968 | ||
3969 | if (*input_line_pointer != ':') | |
3970 | { | |
3971 | /* No repeat count. */ | |
3972 | return; | |
3973 | } | |
3974 | ||
3975 | ++input_line_pointer; | |
3976 | expression (&count); | |
3977 | if (count.X_op != O_constant | |
3978 | || count.X_add_number <= 0) | |
3979 | { | |
0e389e77 | 3980 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
3981 | return; |
3982 | } | |
3983 | ||
3984 | /* The cons function is going to output this expression once. So we | |
3985 | output it count - 1 times. */ | |
3986 | for (i = count.X_add_number - 1; i > 0; i--) | |
3987 | emit_expr (exp, nbytes); | |
3988 | } | |
3989 | ||
3990 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
3991 | \f | |
3992 | /* Parse a floating point number represented as a hex constant. This | |
3993 | permits users to specify the exact bits they want in the floating | |
3994 | point number. */ | |
3995 | ||
3996 | static int | |
39e6acbd | 3997 | hex_float (int float_type, char *bytes) |
252b5132 RH |
3998 | { |
3999 | int length; | |
4000 | int i; | |
4001 | ||
4002 | switch (float_type) | |
4003 | { | |
4004 | case 'f': | |
4005 | case 'F': | |
4006 | case 's': | |
4007 | case 'S': | |
4008 | length = 4; | |
4009 | break; | |
4010 | ||
4011 | case 'd': | |
4012 | case 'D': | |
4013 | case 'r': | |
4014 | case 'R': | |
4015 | length = 8; | |
4016 | break; | |
4017 | ||
4018 | case 'x': | |
4019 | case 'X': | |
4020 | length = 12; | |
4021 | break; | |
4022 | ||
4023 | case 'p': | |
4024 | case 'P': | |
4025 | length = 12; | |
4026 | break; | |
4027 | ||
4028 | default: | |
0e389e77 | 4029 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4030 | return -1; |
4031 | } | |
4032 | ||
4033 | /* It would be nice if we could go through expression to parse the | |
4034 | hex constant, but if we get a bignum it's a pain to sort it into | |
4035 | the buffer correctly. */ | |
4036 | i = 0; | |
4037 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4038 | { | |
4039 | int d; | |
4040 | ||
4041 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4042 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4043 | if (*input_line_pointer == '_') |
4044 | { | |
4045 | ++input_line_pointer; | |
4046 | continue; | |
4047 | } | |
4048 | ||
4049 | if (i >= length) | |
4050 | { | |
0e389e77 | 4051 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4052 | return -1; |
4053 | } | |
4054 | d = hex_value (*input_line_pointer) << 4; | |
4055 | ++input_line_pointer; | |
4056 | while (*input_line_pointer == '_') | |
4057 | ++input_line_pointer; | |
4058 | if (hex_p (*input_line_pointer)) | |
4059 | { | |
4060 | d += hex_value (*input_line_pointer); | |
4061 | ++input_line_pointer; | |
4062 | } | |
4063 | if (target_big_endian) | |
4064 | bytes[i] = d; | |
4065 | else | |
4066 | bytes[length - i - 1] = d; | |
4067 | ++i; | |
4068 | } | |
4069 | ||
4070 | if (i < length) | |
4071 | { | |
4072 | if (target_big_endian) | |
4073 | memset (bytes + i, 0, length - i); | |
4074 | else | |
4075 | memset (bytes, 0, length - i); | |
4076 | } | |
4077 | ||
4078 | return length; | |
4079 | } | |
4080 | ||
d6415f6c | 4081 | /* float_cons() |
f0e652b4 | 4082 | |
041ff4dd NC |
4083 | CONStruct some more frag chars of .floats .ffloats etc. |
4084 | Makes 0 or more new frags. | |
4085 | If need_pass_2 == 1, no frags are emitted. | |
4086 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4087 | |
041ff4dd NC |
4088 | A floating constant is defined by atof_generic(), except it is preceded |
4089 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4090 | reading, I decided to be incompatible. This always tries to give you | |
4091 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
47eebc20 | 4092 | truncation, restored noisy bits instead of trailing 0s AND gave you |
041ff4dd NC |
4093 | a choice of 2 flavours of noise according to which of 2 floating-point |
4094 | scanners you directed AS to use. | |
f0e652b4 | 4095 | |
041ff4dd | 4096 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4097 | |
4098 | void | |
39e6acbd KH |
4099 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ |
4100 | register int float_type /* 'f':.ffloat ... 'F':.float ... */) | |
252b5132 RH |
4101 | { |
4102 | register char *p; | |
041ff4dd NC |
4103 | int length; /* Number of chars in an object. */ |
4104 | register char *err; /* Error from scanning floating literal. */ | |
252b5132 RH |
4105 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4106 | ||
4107 | if (is_it_end_of_statement ()) | |
4108 | { | |
4109 | demand_empty_rest_of_line (); | |
4110 | return; | |
4111 | } | |
4112 | ||
4113 | #ifdef md_flush_pending_output | |
4114 | md_flush_pending_output (); | |
4115 | #endif | |
4116 | ||
4117 | do | |
4118 | { | |
041ff4dd | 4119 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4120 | SKIP_WHITESPACE (); |
4121 | ||
4122 | /* Skip any 0{letter} that may be present. Don't even check if the | |
d6415f6c AM |
4123 | letter is legal. Someone may invent a "z" format and this routine |
4124 | has no use for such information. Lusers beware: you get | |
4125 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4126 | if (input_line_pointer[0] == '0' |
3882b010 | 4127 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4128 | input_line_pointer += 2; |
4129 | ||
4130 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
d6415f6c | 4131 | point with the exact digits specified. */ |
252b5132 RH |
4132 | if (input_line_pointer[0] == ':') |
4133 | { | |
4134 | ++input_line_pointer; | |
4135 | length = hex_float (float_type, temp); | |
4136 | if (length < 0) | |
4137 | { | |
4138 | ignore_rest_of_line (); | |
4139 | return; | |
4140 | } | |
4141 | } | |
4142 | else | |
4143 | { | |
4144 | err = md_atof (float_type, temp, &length); | |
4145 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
4146 | know (length > 0); | |
4147 | if (err) | |
4148 | { | |
0e389e77 | 4149 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4150 | ignore_rest_of_line (); |
4151 | return; | |
4152 | } | |
4153 | } | |
4154 | ||
4155 | if (!need_pass_2) | |
4156 | { | |
4157 | int count; | |
4158 | ||
4159 | count = 1; | |
4160 | ||
4161 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4162 | if (*input_line_pointer == ':') | |
4163 | { | |
4164 | expressionS count_exp; | |
4165 | ||
4166 | ++input_line_pointer; | |
4167 | expression (&count_exp); | |
f0e652b4 | 4168 | |
252b5132 RH |
4169 | if (count_exp.X_op != O_constant |
4170 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4171 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4172 | else |
4173 | count = count_exp.X_add_number; | |
4174 | } | |
4175 | #endif | |
4176 | ||
4177 | while (--count >= 0) | |
4178 | { | |
4179 | p = frag_more (length); | |
4180 | memcpy (p, temp, (unsigned int) length); | |
4181 | } | |
4182 | } | |
4183 | SKIP_WHITESPACE (); | |
4184 | } | |
4185 | while (*input_line_pointer++ == ','); | |
4186 | ||
041ff4dd NC |
4187 | /* Put terminator back into stream. */ |
4188 | --input_line_pointer; | |
252b5132 | 4189 | demand_empty_rest_of_line (); |
041ff4dd | 4190 | } |
252b5132 | 4191 | \f |
041ff4dd | 4192 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4193 | |
4194 | static inline int | |
39e6acbd | 4195 | sizeof_sleb128 (offsetT value) |
252b5132 RH |
4196 | { |
4197 | register int size = 0; | |
4198 | register unsigned byte; | |
4199 | ||
4200 | do | |
4201 | { | |
4202 | byte = (value & 0x7f); | |
4203 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4204 | Fortunately, we can structure things so that the extra work reduces | |
4205 | to a noop on systems that do things "properly". */ | |
4206 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4207 | size += 1; | |
4208 | } | |
4209 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4210 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4211 | ||
4212 | return size; | |
4213 | } | |
4214 | ||
4215 | static inline int | |
39e6acbd | 4216 | sizeof_uleb128 (valueT value) |
252b5132 RH |
4217 | { |
4218 | register int size = 0; | |
4219 | register unsigned byte; | |
4220 | ||
4221 | do | |
4222 | { | |
4223 | byte = (value & 0x7f); | |
4224 | value >>= 7; | |
4225 | size += 1; | |
4226 | } | |
4227 | while (value != 0); | |
4228 | ||
4229 | return size; | |
4230 | } | |
4231 | ||
4232 | int | |
39e6acbd | 4233 | sizeof_leb128 (valueT value, int sign) |
252b5132 RH |
4234 | { |
4235 | if (sign) | |
4236 | return sizeof_sleb128 ((offsetT) value); | |
4237 | else | |
4238 | return sizeof_uleb128 (value); | |
4239 | } | |
4240 | ||
4241 | /* Output a LEB128 value. */ | |
4242 | ||
4243 | static inline int | |
39e6acbd | 4244 | output_sleb128 (char *p, offsetT value) |
252b5132 RH |
4245 | { |
4246 | register char *orig = p; | |
4247 | register int more; | |
4248 | ||
4249 | do | |
4250 | { | |
4251 | unsigned byte = (value & 0x7f); | |
4252 | ||
4253 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4254 | Fortunately, we can structure things so that the extra work reduces | |
4255 | to a noop on systems that do things "properly". */ | |
4256 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4257 | ||
4258 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4259 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4260 | if (more) | |
4261 | byte |= 0x80; | |
4262 | ||
4263 | *p++ = byte; | |
4264 | } | |
4265 | while (more); | |
4266 | ||
4267 | return p - orig; | |
4268 | } | |
4269 | ||
4270 | static inline int | |
39e6acbd | 4271 | output_uleb128 (char *p, valueT value) |
252b5132 RH |
4272 | { |
4273 | char *orig = p; | |
4274 | ||
4275 | do | |
4276 | { | |
4277 | unsigned byte = (value & 0x7f); | |
4278 | value >>= 7; | |
4279 | if (value != 0) | |
4280 | /* More bytes to follow. */ | |
4281 | byte |= 0x80; | |
4282 | ||
4283 | *p++ = byte; | |
4284 | } | |
4285 | while (value != 0); | |
4286 | ||
4287 | return p - orig; | |
4288 | } | |
4289 | ||
4290 | int | |
39e6acbd | 4291 | output_leb128 (char *p, valueT value, int sign) |
252b5132 RH |
4292 | { |
4293 | if (sign) | |
4294 | return output_sleb128 (p, (offsetT) value); | |
4295 | else | |
4296 | return output_uleb128 (p, value); | |
4297 | } | |
4298 | ||
4299 | /* Do the same for bignums. We combine sizeof with output here in that | |
4300 | we don't output for NULL values of P. It isn't really as critical as | |
4301 | for "normal" values that this be streamlined. */ | |
4302 | ||
6d4d30bb | 4303 | static inline int |
39e6acbd | 4304 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4305 | { |
4306 | char *orig = p; | |
4307 | valueT val = 0; | |
4308 | int loaded = 0; | |
4309 | unsigned byte; | |
4310 | ||
4311 | /* Strip leading sign extensions off the bignum. */ | |
e5604d79 RS |
4312 | while (size > 1 |
4313 | && bignum[size - 1] == LITTLENUM_MASK | |
4314 | && bignum[size - 2] > LITTLENUM_MASK / 2) | |
252b5132 RH |
4315 | size--; |
4316 | ||
4317 | do | |
4318 | { | |
e5604d79 RS |
4319 | /* OR in the next part of the littlenum. */ |
4320 | val |= (*bignum << loaded); | |
4321 | loaded += LITTLENUM_NUMBER_OF_BITS; | |
4322 | size--; | |
4323 | bignum++; | |
4324 | ||
4325 | /* Add bytes until there are less than 7 bits left in VAL | |
4326 | or until every non-sign bit has been written. */ | |
4327 | do | |
252b5132 | 4328 | { |
e5604d79 RS |
4329 | byte = val & 0x7f; |
4330 | loaded -= 7; | |
4331 | val >>= 7; | |
4332 | if (size > 0 | |
4333 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | |
252b5132 | 4334 | byte |= 0x80; |
e5604d79 RS |
4335 | |
4336 | if (orig) | |
4337 | *p = byte; | |
4338 | p++; | |
252b5132 | 4339 | } |
e5604d79 RS |
4340 | while ((byte & 0x80) != 0 && loaded >= 7); |
4341 | } | |
4342 | while (size > 0); | |
252b5132 | 4343 | |
e5604d79 RS |
4344 | /* Mop up any left-over bits (of which there will be less than 7). */ |
4345 | if ((byte & 0x80) != 0) | |
4346 | { | |
4347 | /* Sign-extend VAL. */ | |
4348 | if (val & (1 << (loaded - 1))) | |
4349 | val |= ~0 << loaded; | |
252b5132 | 4350 | if (orig) |
e5604d79 | 4351 | *p = val & 0x7f; |
252b5132 RH |
4352 | p++; |
4353 | } | |
252b5132 RH |
4354 | |
4355 | return p - orig; | |
4356 | } | |
4357 | ||
6d4d30bb | 4358 | static inline int |
39e6acbd | 4359 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) |
252b5132 RH |
4360 | { |
4361 | char *orig = p; | |
4362 | valueT val = 0; | |
4363 | int loaded = 0; | |
4364 | unsigned byte; | |
4365 | ||
4366 | /* Strip leading zeros off the bignum. */ | |
4367 | /* XXX: Is this needed? */ | |
041ff4dd | 4368 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4369 | size--; |
4370 | ||
4371 | do | |
4372 | { | |
4373 | if (loaded < 7 && size > 0) | |
4374 | { | |
4375 | val |= (*bignum << loaded); | |
4376 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4377 | size--; | |
4378 | bignum++; | |
4379 | } | |
4380 | ||
4381 | byte = val & 0x7f; | |
4382 | loaded -= 7; | |
4383 | val >>= 7; | |
4384 | ||
4385 | if (size > 0 || val) | |
4386 | byte |= 0x80; | |
4387 | ||
4388 | if (orig) | |
4389 | *p = byte; | |
4390 | p++; | |
4391 | } | |
4392 | while (byte & 0x80); | |
4393 | ||
4394 | return p - orig; | |
4395 | } | |
4396 | ||
6d4d30bb | 4397 | static int |
39e6acbd | 4398 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) |
252b5132 RH |
4399 | { |
4400 | if (sign) | |
4401 | return output_big_sleb128 (p, bignum, size); | |
4402 | else | |
4403 | return output_big_uleb128 (p, bignum, size); | |
4404 | } | |
4405 | ||
4406 | /* Generate the appropriate fragments for a given expression to emit a | |
4407 | leb128 value. */ | |
4408 | ||
4409 | void | |
39e6acbd | 4410 | emit_leb128_expr (expressionS *exp, int sign) |
252b5132 RH |
4411 | { |
4412 | operatorT op = exp->X_op; | |
67a659f6 | 4413 | int nbytes; |
252b5132 RH |
4414 | |
4415 | if (op == O_absent || op == O_illegal) | |
4416 | { | |
4417 | as_warn (_("zero assumed for missing expression")); | |
4418 | exp->X_add_number = 0; | |
4419 | op = O_constant; | |
4420 | } | |
4421 | else if (op == O_big && exp->X_add_number <= 0) | |
4422 | { | |
0e389e77 | 4423 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4424 | exp->X_add_number = 0; |
4425 | op = O_constant; | |
4426 | } | |
4427 | else if (op == O_register) | |
4428 | { | |
4429 | as_warn (_("register value used as expression")); | |
4430 | op = O_constant; | |
4431 | } | |
e5604d79 RS |
4432 | else if (op == O_constant |
4433 | && sign | |
4434 | && (exp->X_add_number < 0) != !exp->X_unsigned) | |
4435 | { | |
4436 | /* We're outputting a signed leb128 and the sign of X_add_number | |
4437 | doesn't reflect the sign of the original value. Convert EXP | |
4438 | to a correctly-extended bignum instead. */ | |
4439 | convert_to_bignum (exp); | |
4440 | op = O_big; | |
4441 | } | |
252b5132 | 4442 | |
67a659f6 RH |
4443 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
4444 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
4445 | nbytes = -1; | |
4446 | if (check_eh_frame (exp, &nbytes)) | |
4447 | abort (); | |
4448 | ||
371b7465 RH |
4449 | /* Let the backend know that subsequent data may be byte aligned. */ |
4450 | #ifdef md_cons_align | |
4451 | md_cons_align (1); | |
4452 | #endif | |
4453 | ||
252b5132 RH |
4454 | if (op == O_constant) |
4455 | { | |
4456 | /* If we've got a constant, emit the thing directly right now. */ | |
4457 | ||
4458 | valueT value = exp->X_add_number; | |
4459 | int size; | |
4460 | char *p; | |
4461 | ||
4462 | size = sizeof_leb128 (value, sign); | |
4463 | p = frag_more (size); | |
4464 | output_leb128 (p, value, sign); | |
4465 | } | |
4466 | else if (op == O_big) | |
4467 | { | |
4468 | /* O_big is a different sort of constant. */ | |
4469 | ||
4470 | int size; | |
4471 | char *p; | |
4472 | ||
4473 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
4474 | p = frag_more (size); | |
4475 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
4476 | } | |
4477 | else | |
4478 | { | |
041ff4dd | 4479 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
4480 | resolve things later. */ |
4481 | ||
041ff4dd | 4482 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
4483 | make_expr_symbol (exp), 0, (char *) NULL); |
4484 | } | |
4485 | } | |
4486 | ||
4487 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
4488 | ||
4489 | void | |
39e6acbd | 4490 | s_leb128 (int sign) |
252b5132 RH |
4491 | { |
4492 | expressionS exp; | |
4493 | ||
00bbdfe7 BW |
4494 | #ifdef md_flush_pending_output |
4495 | md_flush_pending_output (); | |
4496 | #endif | |
4497 | ||
041ff4dd NC |
4498 | do |
4499 | { | |
4500 | expression (&exp); | |
4501 | emit_leb128_expr (&exp, sign); | |
4502 | } | |
4503 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
4504 | |
4505 | input_line_pointer--; | |
4506 | demand_empty_rest_of_line (); | |
4507 | } | |
4508 | \f | |
041ff4dd NC |
4509 | /* We read 0 or more ',' separated, double-quoted strings. |
4510 | Caller should have checked need_pass_2 is FALSE because we don't | |
4511 | check it. */ | |
4512 | ||
4513 | void | |
39e6acbd KH |
4514 | stringer (/* Worker to do .ascii etc statements. */ |
4515 | /* Checks end-of-line. */ | |
4516 | register int append_zero /* 0: don't append '\0', else 1. */) | |
252b5132 RH |
4517 | { |
4518 | register unsigned int c; | |
4519 | char *start; | |
4520 | ||
4521 | #ifdef md_flush_pending_output | |
4522 | md_flush_pending_output (); | |
4523 | #endif | |
4524 | ||
041ff4dd NC |
4525 | /* The following awkward logic is to parse ZERO or more strings, |
4526 | comma separated. Recall a string expression includes spaces | |
4527 | before the opening '\"' and spaces after the closing '\"'. | |
4528 | We fake a leading ',' if there is (supposed to be) | |
4529 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
4530 | if (is_it_end_of_statement ()) |
4531 | { | |
041ff4dd NC |
4532 | c = 0; /* Skip loop. */ |
4533 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
4534 | } |
4535 | else | |
4536 | { | |
041ff4dd | 4537 | c = ','; /* Do loop. */ |
252b5132 | 4538 | } |
8ac9ba6c NC |
4539 | /* If we have been switched into the abs_section then we |
4540 | will not have an obstack onto which we can hang strings. */ | |
4541 | if (now_seg == absolute_section) | |
4542 | { | |
4543 | as_bad (_("strings must be placed into a section")); | |
4544 | c = 0; | |
4545 | ignore_rest_of_line (); | |
4546 | } | |
d6415f6c | 4547 | |
252b5132 RH |
4548 | while (c == ',' || c == '<' || c == '"') |
4549 | { | |
4550 | SKIP_WHITESPACE (); | |
4551 | switch (*input_line_pointer) | |
4552 | { | |
4553 | case '\"': | |
041ff4dd | 4554 | ++input_line_pointer; /*->1st char of string. */ |
252b5132 RH |
4555 | start = input_line_pointer; |
4556 | while (is_a_char (c = next_char_of_string ())) | |
4557 | { | |
4558 | FRAG_APPEND_1_CHAR (c); | |
4559 | } | |
4560 | if (append_zero) | |
4561 | { | |
4562 | FRAG_APPEND_1_CHAR (0); | |
4563 | } | |
4564 | know (input_line_pointer[-1] == '\"'); | |
4565 | ||
4566 | #ifndef NO_LISTING | |
4567 | #ifdef OBJ_ELF | |
4568 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | |
d6415f6c AM |
4569 | will emit .string with a filename in the .debug section |
4570 | after a sequence of constants. See the comment in | |
4571 | emit_expr for the sequence. emit_expr will set | |
4572 | dwarf_file_string to non-zero if this string might be a | |
4573 | source file name. */ | |
252b5132 RH |
4574 | if (strcmp (segment_name (now_seg), ".debug") != 0) |
4575 | dwarf_file_string = 0; | |
4576 | else if (dwarf_file_string) | |
4577 | { | |
4578 | c = input_line_pointer[-1]; | |
4579 | input_line_pointer[-1] = '\0'; | |
4580 | listing_source_file (start); | |
4581 | input_line_pointer[-1] = c; | |
4582 | } | |
4583 | #endif | |
4584 | #endif | |
4585 | ||
4586 | break; | |
4587 | case '<': | |
4588 | input_line_pointer++; | |
4589 | c = get_single_number (); | |
4590 | FRAG_APPEND_1_CHAR (c); | |
4591 | if (*input_line_pointer != '>') | |
4592 | { | |
0e389e77 | 4593 | as_bad (_("expected <nn>")); |
252b5132 RH |
4594 | } |
4595 | input_line_pointer++; | |
4596 | break; | |
4597 | case ',': | |
4598 | input_line_pointer++; | |
4599 | break; | |
4600 | } | |
4601 | SKIP_WHITESPACE (); | |
4602 | c = *input_line_pointer; | |
4603 | } | |
4604 | ||
4605 | demand_empty_rest_of_line (); | |
4606 | } /* stringer() */ | |
4607 | \f | |
4608 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
4609 | high bits set. We'll probably also have trouble with | |
4610 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 4611 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 4612 | |
041ff4dd | 4613 | unsigned int |
39e6acbd | 4614 | next_char_of_string (void) |
252b5132 RH |
4615 | { |
4616 | register unsigned int c; | |
4617 | ||
4618 | c = *input_line_pointer++ & CHAR_MASK; | |
4619 | switch (c) | |
4620 | { | |
4621 | case '\"': | |
4622 | c = NOT_A_CHAR; | |
4623 | break; | |
4624 | ||
4625 | case '\n': | |
0e389e77 | 4626 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4627 | bump_line_counters (); |
4628 | break; | |
4629 | ||
4630 | #ifndef NO_STRING_ESCAPES | |
4631 | case '\\': | |
4632 | switch (c = *input_line_pointer++) | |
4633 | { | |
4634 | case 'b': | |
4635 | c = '\b'; | |
4636 | break; | |
4637 | ||
4638 | case 'f': | |
4639 | c = '\f'; | |
4640 | break; | |
4641 | ||
4642 | case 'n': | |
4643 | c = '\n'; | |
4644 | break; | |
4645 | ||
4646 | case 'r': | |
4647 | c = '\r'; | |
4648 | break; | |
4649 | ||
4650 | case 't': | |
4651 | c = '\t'; | |
4652 | break; | |
4653 | ||
4654 | case 'v': | |
4655 | c = '\013'; | |
4656 | break; | |
4657 | ||
4658 | case '\\': | |
4659 | case '"': | |
041ff4dd | 4660 | break; /* As itself. */ |
252b5132 RH |
4661 | |
4662 | case '0': | |
4663 | case '1': | |
4664 | case '2': | |
4665 | case '3': | |
4666 | case '4': | |
4667 | case '5': | |
4668 | case '6': | |
4669 | case '7': | |
4670 | case '8': | |
4671 | case '9': | |
4672 | { | |
4673 | long number; | |
4674 | int i; | |
4675 | ||
041ff4dd | 4676 | for (i = 0, number = 0; |
3882b010 | 4677 | ISDIGIT (c) && i < 3; |
041ff4dd | 4678 | c = *input_line_pointer++, i++) |
252b5132 RH |
4679 | { |
4680 | number = number * 8 + c - '0'; | |
4681 | } | |
f0e652b4 | 4682 | |
252b5132 RH |
4683 | c = number & 0xff; |
4684 | } | |
4685 | --input_line_pointer; | |
4686 | break; | |
4687 | ||
4688 | case 'x': | |
4689 | case 'X': | |
4690 | { | |
4691 | long number; | |
4692 | ||
4693 | number = 0; | |
4694 | c = *input_line_pointer++; | |
3882b010 | 4695 | while (ISXDIGIT (c)) |
252b5132 | 4696 | { |
3882b010 | 4697 | if (ISDIGIT (c)) |
252b5132 | 4698 | number = number * 16 + c - '0'; |
3882b010 | 4699 | else if (ISUPPER (c)) |
252b5132 RH |
4700 | number = number * 16 + c - 'A' + 10; |
4701 | else | |
4702 | number = number * 16 + c - 'a' + 10; | |
4703 | c = *input_line_pointer++; | |
4704 | } | |
4705 | c = number & 0xff; | |
4706 | --input_line_pointer; | |
4707 | } | |
4708 | break; | |
4709 | ||
4710 | case '\n': | |
041ff4dd | 4711 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 4712 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4713 | c = '\n'; |
4714 | bump_line_counters (); | |
4715 | break; | |
4716 | ||
4717 | default: | |
4718 | ||
4719 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 4720 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
4721 | c = '?'; |
4722 | #endif /* ONLY_STANDARD_ESCAPES */ | |
4723 | ||
4724 | break; | |
041ff4dd | 4725 | } |
252b5132 RH |
4726 | break; |
4727 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
4728 | ||
4729 | default: | |
4730 | break; | |
041ff4dd | 4731 | } |
252b5132 | 4732 | return (c); |
041ff4dd | 4733 | } |
252b5132 RH |
4734 | \f |
4735 | static segT | |
39e6acbd | 4736 | get_segmented_expression (register expressionS *expP) |
252b5132 RH |
4737 | { |
4738 | register segT retval; | |
4739 | ||
4740 | retval = expression (expP); | |
4741 | if (expP->X_op == O_illegal | |
4742 | || expP->X_op == O_absent | |
4743 | || expP->X_op == O_big) | |
4744 | { | |
0e389e77 | 4745 | as_bad (_("expected address expression")); |
252b5132 RH |
4746 | expP->X_op = O_constant; |
4747 | expP->X_add_number = 0; | |
4748 | retval = absolute_section; | |
4749 | } | |
4750 | return retval; | |
4751 | } | |
4752 | ||
041ff4dd | 4753 | static segT |
39e6acbd | 4754 | get_known_segmented_expression (register expressionS *expP) |
252b5132 RH |
4755 | { |
4756 | register segT retval; | |
4757 | ||
4758 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
4759 | { | |
4760 | /* There is no easy way to extract the undefined symbol from the | |
4761 | expression. */ | |
4762 | if (expP->X_add_symbol != NULL | |
4763 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
4764 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
4765 | S_GET_NAME (expP->X_add_symbol)); | |
4766 | else | |
4767 | as_warn (_("some symbol undefined; zero assumed")); | |
4768 | retval = absolute_section; | |
4769 | expP->X_op = O_constant; | |
4770 | expP->X_add_number = 0; | |
4771 | } | |
4772 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
4773 | return (retval); | |
041ff4dd | 4774 | } |
252b5132 RH |
4775 | |
4776 | offsetT | |
39e6acbd | 4777 | get_absolute_expr (expressionS *exp) |
252b5132 | 4778 | { |
a0ea3e1d AM |
4779 | expression (exp); |
4780 | if (exp->X_op != O_constant) | |
252b5132 | 4781 | { |
a0ea3e1d | 4782 | if (exp->X_op != O_absent) |
0e389e77 | 4783 | as_bad (_("bad or irreducible absolute expression")); |
a0ea3e1d | 4784 | exp->X_add_number = 0; |
252b5132 | 4785 | } |
a0ea3e1d AM |
4786 | return exp->X_add_number; |
4787 | } | |
4788 | ||
4789 | offsetT | |
39e6acbd | 4790 | get_absolute_expression (void) |
a0ea3e1d AM |
4791 | { |
4792 | expressionS exp; | |
4793 | ||
4794 | return get_absolute_expr (&exp); | |
252b5132 RH |
4795 | } |
4796 | ||
041ff4dd | 4797 | char /* Return terminator. */ |
39e6acbd | 4798 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) |
252b5132 RH |
4799 | { |
4800 | /* FIXME: val_pointer should probably be offsetT *. */ | |
4801 | *val_pointer = (long) get_absolute_expression (); | |
4802 | return (*input_line_pointer++); | |
4803 | } | |
4804 | \f | |
041ff4dd NC |
4805 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
4806 | Give a warning if that happens. */ | |
4807 | ||
252b5132 | 4808 | char * |
39e6acbd | 4809 | demand_copy_C_string (int *len_pointer) |
252b5132 RH |
4810 | { |
4811 | register char *s; | |
4812 | ||
4813 | if ((s = demand_copy_string (len_pointer)) != 0) | |
4814 | { | |
4815 | register int len; | |
4816 | ||
4817 | for (len = *len_pointer; len > 0; len--) | |
4818 | { | |
4819 | if (*s == 0) | |
4820 | { | |
4821 | s = 0; | |
4822 | len = 1; | |
4823 | *len_pointer = 0; | |
0e389e77 | 4824 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
4825 | } |
4826 | } | |
4827 | } | |
f0e652b4 | 4828 | |
252b5132 RH |
4829 | return s; |
4830 | } | |
4831 | \f | |
041ff4dd NC |
4832 | /* Demand string, but return a safe (=private) copy of the string. |
4833 | Return NULL if we can't read a string here. */ | |
4834 | ||
252b5132 | 4835 | char * |
39e6acbd | 4836 | demand_copy_string (int *lenP) |
252b5132 RH |
4837 | { |
4838 | register unsigned int c; | |
4839 | register int len; | |
4840 | char *retval; | |
4841 | ||
4842 | len = 0; | |
4843 | SKIP_WHITESPACE (); | |
4844 | if (*input_line_pointer == '\"') | |
4845 | { | |
041ff4dd | 4846 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
4847 | |
4848 | while (is_a_char (c = next_char_of_string ())) | |
4849 | { | |
4850 | obstack_1grow (¬es, c); | |
4851 | len++; | |
4852 | } | |
4853 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 4854 | null terminated string. */ |
252b5132 RH |
4855 | obstack_1grow (¬es, '\0'); |
4856 | retval = obstack_finish (¬es); | |
4857 | } | |
4858 | else | |
4859 | { | |
c95b35a9 | 4860 | as_bad (_("missing string")); |
252b5132 RH |
4861 | retval = NULL; |
4862 | ignore_rest_of_line (); | |
4863 | } | |
4864 | *lenP = len; | |
4865 | return (retval); | |
041ff4dd | 4866 | } |
252b5132 | 4867 | \f |
041ff4dd | 4868 | /* In: Input_line_pointer->next character. |
f0e652b4 | 4869 | |
041ff4dd | 4870 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 4871 | |
041ff4dd NC |
4872 | Out: 1 if input_line_pointer->end-of-line. */ |
4873 | ||
4874 | int | |
39e6acbd | 4875 | is_it_end_of_statement (void) |
252b5132 RH |
4876 | { |
4877 | SKIP_WHITESPACE (); | |
4878 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 4879 | } |
252b5132 | 4880 | |
041ff4dd | 4881 | void |
39e6acbd | 4882 | equals (char *sym_name, int reassign) |
252b5132 | 4883 | { |
041ff4dd | 4884 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 RH |
4885 | char *stop = NULL; |
4886 | char stopc; | |
4887 | ||
4888 | input_line_pointer++; | |
4889 | if (*input_line_pointer == '=') | |
4890 | input_line_pointer++; | |
4891 | ||
4892 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
4893 | input_line_pointer++; | |
4894 | ||
4895 | if (flag_mri) | |
4896 | stop = mri_comment_field (&stopc); | |
4897 | ||
4898 | if (sym_name[0] == '.' && sym_name[1] == '\0') | |
4899 | { | |
041ff4dd | 4900 | /* Turn '. = mumble' into a .org mumble. */ |
252b5132 RH |
4901 | register segT segment; |
4902 | expressionS exp; | |
4903 | ||
4904 | segment = get_known_segmented_expression (&exp); | |
4905 | if (!need_pass_2) | |
4906 | do_org (segment, &exp, 0); | |
4907 | } | |
4908 | else | |
4909 | { | |
440ecb38 L |
4910 | #ifdef OBJ_COFF |
4911 | int local; | |
4912 | ||
4913 | symbolP = symbol_find (sym_name); | |
4914 | local = symbolP == NULL; | |
4915 | if (local) | |
4916 | #endif /* OBJ_COFF */ | |
252b5132 RH |
4917 | symbolP = symbol_find_or_make (sym_name); |
4918 | /* Permit register names to be redefined. */ | |
041ff4dd | 4919 | if (!reassign |
252b5132 RH |
4920 | && S_IS_DEFINED (symbolP) |
4921 | && S_GET_SEGMENT (symbolP) != reg_section) | |
0e389e77 | 4922 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP)); |
775cf891 NC |
4923 | |
4924 | #ifdef OBJ_COFF | |
4925 | /* "set" symbols are local unless otherwise specified. */ | |
440ecb38 L |
4926 | if (local) |
4927 | SF_SET_LOCAL (symbolP); | |
775cf891 NC |
4928 | #endif /* OBJ_COFF */ |
4929 | ||
252b5132 RH |
4930 | pseudo_set (symbolP); |
4931 | } | |
4932 | ||
4933 | if (flag_mri) | |
041ff4dd NC |
4934 | { |
4935 | /* Check garbage after the expression. */ | |
c95b35a9 | 4936 | demand_empty_rest_of_line (); |
041ff4dd NC |
4937 | mri_comment_end (stop, stopc); |
4938 | } | |
4939 | } | |
252b5132 | 4940 | |
7e005732 NC |
4941 | /* .incbin -- include a file verbatim at the current location. */ |
4942 | ||
4943 | void | |
39e6acbd | 4944 | s_incbin (int x ATTRIBUTE_UNUSED) |
7e005732 NC |
4945 | { |
4946 | FILE * binfile; | |
4947 | char * path; | |
4948 | char * filename; | |
4949 | char * binfrag; | |
4950 | long skip = 0; | |
4951 | long count = 0; | |
4952 | long bytes; | |
4953 | int len; | |
4954 | ||
4955 | #ifdef md_flush_pending_output | |
4956 | md_flush_pending_output (); | |
4957 | #endif | |
4958 | ||
4959 | SKIP_WHITESPACE (); | |
4960 | filename = demand_copy_string (& len); | |
4961 | if (filename == NULL) | |
4962 | return; | |
4963 | ||
4964 | SKIP_WHITESPACE (); | |
4965 | ||
4966 | /* Look for optional skip and count. */ | |
4967 | if (* input_line_pointer == ',') | |
4968 | { | |
4969 | ++ input_line_pointer; | |
4970 | skip = get_absolute_expression (); | |
4971 | ||
4972 | SKIP_WHITESPACE (); | |
4973 | ||
4974 | if (* input_line_pointer == ',') | |
4975 | { | |
4976 | ++ input_line_pointer; | |
4977 | ||
4978 | count = get_absolute_expression (); | |
4979 | if (count == 0) | |
4980 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
4981 | ||
4982 | SKIP_WHITESPACE (); | |
4983 | } | |
4984 | } | |
4985 | ||
4986 | demand_empty_rest_of_line (); | |
4987 | ||
4988 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 4989 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
4990 | if (binfile == NULL) |
4991 | { | |
4992 | int i; | |
4993 | ||
4994 | path = xmalloc ((unsigned long) len + include_dir_maxlen + 5); | |
4995 | ||
4996 | for (i = 0; i < include_dir_count; i++) | |
4997 | { | |
4998 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
4999 | ||
f740e790 | 5000 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5001 | if (binfile != NULL) |
5002 | break; | |
5003 | } | |
5004 | ||
5005 | if (binfile == NULL) | |
5006 | as_bad (_("file not found: %s"), filename); | |
5007 | } | |
5008 | else | |
5009 | path = xstrdup (filename); | |
5010 | ||
5011 | if (binfile) | |
5012 | { | |
f740e790 NC |
5013 | long file_len; |
5014 | ||
7e005732 NC |
5015 | register_dependency (path); |
5016 | ||
5017 | /* Compute the length of the file. */ | |
5018 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5019 | { | |
5020 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5021 | goto done; | |
5022 | } | |
f740e790 | 5023 | file_len = ftell (binfile); |
7e005732 | 5024 | |
c556cc9c | 5025 | /* If a count was not specified use the remainder of the file. */ |
7e005732 | 5026 | if (count == 0) |
c556cc9c | 5027 | count = file_len - skip; |
7e005732 | 5028 | |
c556cc9c | 5029 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) |
7e005732 | 5030 | { |
c556cc9c | 5031 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)"), |
f740e790 | 5032 | skip, count, file_len); |
7e005732 NC |
5033 | goto done; |
5034 | } | |
5035 | ||
5036 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5037 | { | |
5038 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5039 | goto done; | |
5040 | } | |
5041 | ||
5042 | /* Allocate frag space and store file contents in it. */ | |
5043 | binfrag = frag_more (count); | |
5044 | ||
5045 | bytes = fread (binfrag, 1, count, binfile); | |
5046 | if (bytes < count) | |
5047 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5048 | path, bytes, count); | |
5049 | } | |
5050 | done: | |
5051 | if (binfile != NULL) | |
5052 | fclose (binfile); | |
5053 | if (path) | |
5054 | free (path); | |
5055 | } | |
5056 | ||
041ff4dd | 5057 | /* .include -- include a file at this point. */ |
252b5132 | 5058 | |
041ff4dd | 5059 | void |
39e6acbd | 5060 | s_include (int arg ATTRIBUTE_UNUSED) |
252b5132 | 5061 | { |
252b5132 RH |
5062 | char *filename; |
5063 | int i; | |
5064 | FILE *try; | |
5065 | char *path; | |
5066 | ||
041ff4dd | 5067 | if (!flag_m68k_mri) |
252b5132 RH |
5068 | { |
5069 | filename = demand_copy_string (&i); | |
5070 | if (filename == NULL) | |
5071 | { | |
5072 | /* demand_copy_string has already printed an error and | |
d6415f6c | 5073 | called ignore_rest_of_line. */ |
252b5132 RH |
5074 | return; |
5075 | } | |
5076 | } | |
5077 | else | |
5078 | { | |
5079 | SKIP_WHITESPACE (); | |
5080 | i = 0; | |
041ff4dd | 5081 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5082 | && *input_line_pointer != ' ' |
5083 | && *input_line_pointer != '\t') | |
5084 | { | |
5085 | obstack_1grow (¬es, *input_line_pointer); | |
5086 | ++input_line_pointer; | |
5087 | ++i; | |
5088 | } | |
f0e652b4 | 5089 | |
252b5132 RH |
5090 | obstack_1grow (¬es, '\0'); |
5091 | filename = obstack_finish (¬es); | |
041ff4dd | 5092 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5093 | ++input_line_pointer; |
5094 | } | |
f0e652b4 | 5095 | |
252b5132 RH |
5096 | demand_empty_rest_of_line (); |
5097 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5098 | |
252b5132 RH |
5099 | for (i = 0; i < include_dir_count; i++) |
5100 | { | |
5101 | strcpy (path, include_dirs[i]); | |
5102 | strcat (path, "/"); | |
5103 | strcat (path, filename); | |
f740e790 | 5104 | if (0 != (try = fopen (path, FOPEN_RT))) |
252b5132 RH |
5105 | { |
5106 | fclose (try); | |
5107 | goto gotit; | |
5108 | } | |
5109 | } | |
f0e652b4 | 5110 | |
252b5132 RH |
5111 | free (path); |
5112 | path = filename; | |
5113 | gotit: | |
041ff4dd | 5114 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5115 | register_dependency (path); |
9f10757c | 5116 | input_scrub_insert_file (path); |
041ff4dd | 5117 | } |
252b5132 | 5118 | |
041ff4dd | 5119 | void |
39e6acbd | 5120 | add_include_dir (char *path) |
252b5132 RH |
5121 | { |
5122 | int i; | |
5123 | ||
5124 | if (include_dir_count == 0) | |
5125 | { | |
5126 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5127 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5128 | include_dir_count = 2; |
5129 | } | |
5130 | else | |
5131 | { | |
5132 | include_dir_count++; | |
041ff4dd NC |
5133 | include_dirs = |
5134 | (char **) realloc (include_dirs, | |
5135 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5136 | } |
5137 | ||
041ff4dd | 5138 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5139 | |
5140 | i = strlen (path); | |
5141 | if (i > include_dir_maxlen) | |
5142 | include_dir_maxlen = i; | |
041ff4dd | 5143 | } |
252b5132 RH |
5144 | \f |
5145 | /* Output debugging information to denote the source file. */ | |
5146 | ||
5147 | static void | |
39e6acbd | 5148 | generate_file_debug (void) |
252b5132 RH |
5149 | { |
5150 | if (debug_type == DEBUG_STABS) | |
5151 | stabs_generate_asm_file (); | |
5152 | } | |
5153 | ||
5154 | /* Output line number debugging information for the current source line. */ | |
5155 | ||
5156 | void | |
39e6acbd | 5157 | generate_lineno_debug (void) |
252b5132 | 5158 | { |
252b5132 RH |
5159 | switch (debug_type) |
5160 | { | |
5161 | case DEBUG_UNSPECIFIED: | |
5162 | case DEBUG_NONE: | |
4dc7ead9 | 5163 | case DEBUG_DWARF: |
252b5132 RH |
5164 | break; |
5165 | case DEBUG_STABS: | |
5166 | stabs_generate_asm_lineno (); | |
5167 | break; | |
5168 | case DEBUG_ECOFF: | |
5169 | ecoff_generate_asm_lineno (); | |
5170 | break; | |
252b5132 | 5171 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5172 | /* ??? We could here indicate to dwarf2dbg.c that something |
5173 | has changed. However, since there is additional backend | |
5174 | support that is required (calling dwarf2_emit_insn), we | |
5175 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5176 | break; |
5177 | } | |
5178 | } | |
5179 | ||
5180 | /* Output debugging information to mark a function entry point or end point. | |
5181 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5182 | ||
5183 | void | |
39e6acbd | 5184 | s_func (int end_p) |
252b5132 RH |
5185 | { |
5186 | do_s_func (end_p, NULL); | |
5187 | } | |
5188 | ||
5189 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5190 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5191 | ||
5192 | void | |
39e6acbd | 5193 | do_s_func (int end_p, const char *default_prefix) |
252b5132 RH |
5194 | { |
5195 | /* Record the current function so that we can issue an error message for | |
5196 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5197 | arguments. */ | |
5198 | static char *current_name; | |
5199 | static char *current_label; | |
5200 | ||
5201 | if (end_p) | |
5202 | { | |
5203 | if (current_name == NULL) | |
5204 | { | |
5205 | as_bad (_("missing .func")); | |
5206 | ignore_rest_of_line (); | |
5207 | return; | |
5208 | } | |
5209 | ||
5210 | if (debug_type == DEBUG_STABS) | |
5211 | stabs_generate_asm_endfunc (current_name, current_label); | |
5212 | ||
5213 | current_name = current_label = NULL; | |
5214 | } | |
5215 | else /* ! end_p */ | |
5216 | { | |
041ff4dd NC |
5217 | char *name, *label; |
5218 | char delim1, delim2; | |
252b5132 RH |
5219 | |
5220 | if (current_name != NULL) | |
5221 | { | |
5222 | as_bad (_(".endfunc missing for previous .func")); | |
5223 | ignore_rest_of_line (); | |
5224 | return; | |
5225 | } | |
5226 | ||
5227 | name = input_line_pointer; | |
5228 | delim1 = get_symbol_end (); | |
5229 | name = xstrdup (name); | |
5230 | *input_line_pointer = delim1; | |
5231 | SKIP_WHITESPACE (); | |
5232 | if (*input_line_pointer != ',') | |
5233 | { | |
5234 | if (default_prefix) | |
5235 | asprintf (&label, "%s%s", default_prefix, name); | |
5236 | else | |
5237 | { | |
5238 | char leading_char = 0; | |
5239 | #ifdef BFD_ASSEMBLER | |
5240 | leading_char = bfd_get_symbol_leading_char (stdoutput); | |
5241 | #endif | |
5242 | /* Missing entry point, use function's name with the leading | |
5243 | char prepended. */ | |
5244 | if (leading_char) | |
5245 | asprintf (&label, "%c%s", leading_char, name); | |
5246 | else | |
5247 | label = name; | |
5248 | } | |
5249 | } | |
5250 | else | |
5251 | { | |
5252 | ++input_line_pointer; | |
5253 | SKIP_WHITESPACE (); | |
5254 | label = input_line_pointer; | |
5255 | delim2 = get_symbol_end (); | |
5256 | label = xstrdup (label); | |
5257 | *input_line_pointer = delim2; | |
5258 | } | |
5259 | ||
5260 | if (debug_type == DEBUG_STABS) | |
5261 | stabs_generate_asm_func (name, label); | |
5262 | ||
5263 | current_name = name; | |
5264 | current_label = label; | |
5265 | } | |
5266 | ||
5267 | demand_empty_rest_of_line (); | |
5268 | } | |
5269 | \f | |
041ff4dd | 5270 | void |
39e6acbd | 5271 | s_ignore (int arg ATTRIBUTE_UNUSED) |
252b5132 RH |
5272 | { |
5273 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
5274 | { | |
5275 | ++input_line_pointer; | |
5276 | } | |
5277 | ++input_line_pointer; | |
5278 | } | |
5279 | ||
252b5132 | 5280 | void |
39e6acbd | 5281 | read_print_statistics (FILE *file) |
252b5132 RH |
5282 | { |
5283 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5284 | } | |
5285 | ||
041ff4dd NC |
5286 | /* Inserts the given line into the input stream. |
5287 | ||
9f10757c TW |
5288 | This call avoids macro/conditionals nesting checking, since the contents of |
5289 | the line are assumed to replace the contents of a line already scanned. | |
5290 | ||
47eebc20 | 5291 | An appropriate use of this function would be substitution of input lines when |
9f10757c TW |
5292 | called by md_start_line_hook(). The given line is assumed to already be |
5293 | properly scrubbed. */ | |
5294 | ||
5295 | void | |
39e6acbd | 5296 | input_scrub_insert_line (const char *line) |
9f10757c TW |
5297 | { |
5298 | sb newline; | |
5299 | sb_new (&newline); | |
5300 | sb_add_string (&newline, line); | |
5301 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5302 | sb_kill (&newline); | |
5303 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5304 | } | |
5305 | ||
5306 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5307 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5308 | |
5309 | void | |
39e6acbd | 5310 | input_scrub_insert_file (char *path) |
9f10757c TW |
5311 | { |
5312 | input_scrub_include_file (path, input_line_pointer); | |
5313 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5314 | } |