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