File: | src/gnu/usr.bin/binutils-2.17/gas/read.c |
Warning: | line 4515, column 12 The result of the left shift is undefined because the left operand is negative |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
1 | /* read.c - read a source file - | ||||
2 | Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, | ||||
3 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 | ||||
4 | Free Software Foundation, Inc. | ||||
5 | |||||
6 | This file is part of GAS, the GNU Assembler. | ||||
7 | |||||
8 | GAS is free software; you can redistribute it and/or modify | ||||
9 | it under the terms of the GNU General Public License as published by | ||||
10 | the Free Software Foundation; either version 2, or (at your option) | ||||
11 | any later version. | ||||
12 | |||||
13 | GAS is distributed in the hope that it will be useful, | ||||
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||||
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||||
16 | GNU General Public License for more details. | ||||
17 | |||||
18 | You should have received a copy of the GNU General Public License | ||||
19 | along with GAS; see the file COPYING. If not, write to the Free | ||||
20 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | ||||
21 | 02110-1301, USA. */ | ||||
22 | |||||
23 | /* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF). | ||||
24 | But then, GNU isn't spozed to run on your machine anyway. | ||||
25 | (RMS is so shortsighted sometimes.) */ | ||||
26 | #define MASK_CHAR((int)(unsigned char) -1) ((int)(unsigned char) -1) | ||||
27 | |||||
28 | /* This is the largest known floating point format (for now). It will | ||||
29 | grow when we do 4361 style flonums. */ | ||||
30 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT(16) (16) | ||||
31 | |||||
32 | /* Routines that read assembler source text to build spaghetti in memory. | ||||
33 | Another group of these functions is in the expr.c module. */ | ||||
34 | |||||
35 | #include "as.h" | ||||
36 | #include "safe-ctype.h" | ||||
37 | #include "subsegs.h" | ||||
38 | #include "sb.h" | ||||
39 | #include "macro.h" | ||||
40 | #include "obstack.h" | ||||
41 | #include "listing.h" | ||||
42 | #include "ecoff.h" | ||||
43 | #include "dw2gencfi.h" | ||||
44 | |||||
45 | #ifndef TC_START_LABEL | ||||
46 | #define TC_START_LABEL(x,y)(x == ':') (x == ':') | ||||
47 | #endif | ||||
48 | |||||
49 | /* Set by the object-format or the target. */ | ||||
50 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | ||||
51 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR)do { if ((SIZE) >= 8) (P2VAR) = 3; else if ((SIZE) >= 4 ) (P2VAR) = 2; else if ((SIZE) >= 2) (P2VAR) = 1; else (P2VAR ) = 0; } while (0) \ | ||||
52 | do \ | ||||
53 | { \ | ||||
54 | if ((SIZE) >= 8) \ | ||||
55 | (P2VAR) = 3; \ | ||||
56 | else if ((SIZE) >= 4) \ | ||||
57 | (P2VAR) = 2; \ | ||||
58 | else if ((SIZE) >= 2) \ | ||||
59 | (P2VAR) = 1; \ | ||||
60 | else \ | ||||
61 | (P2VAR) = 0; \ | ||||
62 | } \ | ||||
63 | while (0) | ||||
64 | #endif | ||||
65 | |||||
66 | char *input_line_pointer; /*->next char of source file to parse. */ | ||||
67 | |||||
68 | #if BITS_PER_CHAR(8) != 8 | ||||
69 | /* The following table is indexed by[(char)] and will break if | ||||
70 | a char does not have exactly 256 states (hopefully 0:255!)! */ | ||||
71 | die horribly; | ||||
72 | #endif | ||||
73 | |||||
74 | #ifndef LEX_AT0 | ||||
75 | #define LEX_AT0 0 | ||||
76 | #endif | ||||
77 | |||||
78 | #ifndef LEX_BR0 | ||||
79 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | ||||
80 | #define LEX_BR0 0 | ||||
81 | #endif | ||||
82 | |||||
83 | #ifndef LEX_PCT0 | ||||
84 | /* The Delta 68k assembler permits % inside label names. */ | ||||
85 | #define LEX_PCT0 0 | ||||
86 | #endif | ||||
87 | |||||
88 | #ifndef LEX_QM0 | ||||
89 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | ||||
90 | #define LEX_QM0 0 | ||||
91 | #endif | ||||
92 | |||||
93 | #ifndef LEX_HASH0 | ||||
94 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include | ||||
95 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | ||||
96 | #define LEX_HASH0 0 | ||||
97 | #endif | ||||
98 | |||||
99 | #ifndef LEX_DOLLAR3 | ||||
100 | #define LEX_DOLLAR3 3 | ||||
101 | #endif | ||||
102 | |||||
103 | #ifndef LEX_TILDE0 | ||||
104 | /* The Delta 68k assembler permits ~ at start of label names. */ | ||||
105 | #define LEX_TILDE0 0 | ||||
106 | #endif | ||||
107 | |||||
108 | /* Used by is_... macros. our ctype[]. */ | ||||
109 | char lex_type[256] = { | ||||
110 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ | ||||
111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | ||||
112 | 0, 0, 0, LEX_HASH0, LEX_DOLLAR3, LEX_PCT0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ | ||||
113 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM0, /* 0123456789:;<=>? */ | ||||
114 | LEX_AT0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | ||||
115 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR0, 0, LEX_BR0, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | ||||
116 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | ||||
117 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR0, 0, LEX_BR0, LEX_TILDE0, 0, /* pqrstuvwxyz{|}~. */ | ||||
118 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | ||||
119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | ||||
120 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | ||||
121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | ||||
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | ||||
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | ||||
124 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | ||||
125 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | ||||
126 | }; | ||||
127 | |||||
128 | /* In: a character. | ||||
129 | Out: 1 if this character ends a line. */ | ||||
130 | char is_end_of_line[256] = { | ||||
131 | #ifdef CR_EOL | ||||
132 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ | ||||
133 | #else | ||||
134 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ | ||||
135 | #endif | ||||
136 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | ||||
137 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | ||||
138 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ | ||||
139 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | ||||
140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | ||||
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | ||||
142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | ||||
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | ||||
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | ||||
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | ||||
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | ||||
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | ||||
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 | }; | ||||
152 | |||||
153 | #ifndef TC_CASE_SENSITIVE | ||||
154 | char original_case_string[128]; | ||||
155 | #endif | ||||
156 | |||||
157 | /* Functions private to this file. */ | ||||
158 | |||||
159 | static char *buffer; /* 1st char of each buffer of lines is here. */ | ||||
160 | static char *buffer_limit; /*->1 + last char in buffer. */ | ||||
161 | |||||
162 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 | ||||
163 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | ||||
164 | internals manual. */ | ||||
165 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN0; | ||||
166 | |||||
167 | /* Variables for handling include file directory table. */ | ||||
168 | |||||
169 | /* Table of pointers to directories to search for .include's. */ | ||||
170 | char **include_dirs; | ||||
171 | |||||
172 | /* How many are in the table. */ | ||||
173 | int include_dir_count; | ||||
174 | |||||
175 | /* Length of longest in table. */ | ||||
176 | int include_dir_maxlen = 1; | ||||
177 | |||||
178 | #ifndef WORKING_DOT_WORD | ||||
179 | struct broken_word *broken_words; | ||||
180 | int new_broken_words; | ||||
181 | #endif | ||||
182 | |||||
183 | /* The current offset into the absolute section. We don't try to | ||||
184 | build frags in the absolute section, since no data can be stored | ||||
185 | there. We just keep track of the current offset. */ | ||||
186 | addressT abs_section_offset; | ||||
187 | |||||
188 | /* If this line had an MRI style label, it is stored in this variable. | ||||
189 | This is used by some of the MRI pseudo-ops. */ | ||||
190 | symbolS *line_label; | ||||
191 | |||||
192 | /* This global variable is used to support MRI common sections. We | ||||
193 | translate such sections into a common symbol. This variable is | ||||
194 | non-NULL when we are in an MRI common section. */ | ||||
195 | symbolS *mri_common_symbol; | ||||
196 | |||||
197 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | ||||
198 | need to align to an even byte boundary unless the next pseudo-op is | ||||
199 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | ||||
200 | may be needed. */ | ||||
201 | static int mri_pending_align; | ||||
202 | |||||
203 | #ifndef NO_LISTING | ||||
204 | #ifdef OBJ_ELF1 | ||||
205 | /* This variable is set to be non-zero if the next string we see might | ||||
206 | be the name of the source file in DWARF debugging information. See | ||||
207 | the comment in emit_expr for the format we look for. */ | ||||
208 | static int dwarf_file_string; | ||||
209 | #endif | ||||
210 | #endif | ||||
211 | |||||
212 | static void do_s_func (int end_p, const char *default_prefix); | ||||
213 | static void do_align (int, char *, int, int); | ||||
214 | static void s_align (int, int); | ||||
215 | static void s_altmacro (int); | ||||
216 | static void s_bad_end (int); | ||||
217 | static int hex_float (int, char *); | ||||
218 | static segT get_known_segmented_expression (expressionS * expP); | ||||
219 | static void pobegin (void); | ||||
220 | static int get_line_sb (sb *); | ||||
221 | static void generate_file_debug (void); | ||||
222 | static char *_find_end_of_line (char *, int, int); | ||||
223 | |||||
224 | void | ||||
225 | read_begin (void) | ||||
226 | { | ||||
227 | const char *p; | ||||
228 | |||||
229 | pobegin (); | ||||
230 | obj_read_begin_hookelf_obj_read_begin_hook (); | ||||
231 | |||||
232 | /* Something close -- but not too close -- to a multiple of 1024. | ||||
233 | The debugging malloc I'm using has 24 bytes of overhead. */ | ||||
234 | obstack_begin (¬es, chunksize)_obstack_begin ((¬es), (chunksize), 0, (void *(*) (long )) xmalloc, (void (*) (void *)) free); | ||||
235 | obstack_begin (&cond_obstack, chunksize)_obstack_begin ((&cond_obstack), (chunksize), 0, (void *( *) (long)) xmalloc, (void (*) (void *)) free); | ||||
236 | |||||
237 | /* Use machine dependent syntax. */ | ||||
238 | for (p = line_separator_chars; *p; p++) | ||||
239 | is_end_of_line[(unsigned char) *p] = 1; | ||||
240 | /* Use more. FIXME-SOMEDAY. */ | ||||
241 | |||||
242 | if (flag_mri) | ||||
243 | lex_type['?'] = 3; | ||||
244 | } | ||||
245 | |||||
246 | #ifndef TC_ADDRESS_BYTESaddress_bytes | ||||
247 | #define TC_ADDRESS_BYTESaddress_bytes address_bytes | ||||
248 | |||||
249 | static inline int | ||||
250 | address_bytes (void) | ||||
251 | { | ||||
252 | /* Choose smallest of 1, 2, 4, 8 bytes that is large enough to | ||||
253 | contain an address. */ | ||||
254 | int n = (stdoutput->arch_info->bits_per_address - 1) / 8; | ||||
255 | n |= n >> 1; | ||||
256 | n |= n >> 2; | ||||
257 | n += 1; | ||||
258 | return n; | ||||
259 | } | ||||
260 | #endif | ||||
261 | |||||
262 | /* Set up pseudo-op tables. */ | ||||
263 | |||||
264 | static struct hash_control *po_hash; | ||||
265 | |||||
266 | static const pseudo_typeS potable[] = { | ||||
267 | {"abort", s_abort, 0}, | ||||
268 | {"align", s_align_ptwo, 0}, | ||||
269 | {"altmacro", s_altmacro, 1}, | ||||
270 | {"ascii", stringer, 0}, | ||||
271 | {"asciz", stringer, 1}, | ||||
272 | {"balign", s_align_bytes, 0}, | ||||
273 | {"balignw", s_align_bytes, -2}, | ||||
274 | {"balignl", s_align_bytes, -4}, | ||||
275 | /* block */ | ||||
276 | {"byte", cons, 1}, | ||||
277 | {"comm", s_comm, 0}, | ||||
278 | {"common", s_mri_common, 0}, | ||||
279 | {"common.s", s_mri_common, 1}, | ||||
280 | {"data", s_data, 0}, | ||||
281 | {"dc", cons, 2}, | ||||
282 | #ifdef TC_ADDRESS_BYTESaddress_bytes | ||||
283 | {"dc.a", cons, 0}, | ||||
284 | #endif | ||||
285 | {"dc.b", cons, 1}, | ||||
286 | {"dc.d", float_cons, 'd'}, | ||||
287 | {"dc.l", cons, 4}, | ||||
288 | {"dc.s", float_cons, 'f'}, | ||||
289 | {"dc.w", cons, 2}, | ||||
290 | {"dc.x", float_cons, 'x'}, | ||||
291 | {"dcb", s_space, 2}, | ||||
292 | {"dcb.b", s_space, 1}, | ||||
293 | {"dcb.d", s_float_space, 'd'}, | ||||
294 | {"dcb.l", s_space, 4}, | ||||
295 | {"dcb.s", s_float_space, 'f'}, | ||||
296 | {"dcb.w", s_space, 2}, | ||||
297 | {"dcb.x", s_float_space, 'x'}, | ||||
298 | {"ds", s_space, 2}, | ||||
299 | {"ds.b", s_space, 1}, | ||||
300 | {"ds.d", s_space, 8}, | ||||
301 | {"ds.l", s_space, 4}, | ||||
302 | {"ds.p", s_space, 12}, | ||||
303 | {"ds.s", s_space, 4}, | ||||
304 | {"ds.w", s_space, 2}, | ||||
305 | {"ds.x", s_space, 12}, | ||||
306 | {"debug", s_ignore, 0}, | ||||
307 | #ifdef S_SET_DESC | ||||
308 | {"desc", s_desc, 0}, | ||||
309 | #endif | ||||
310 | /* dim */ | ||||
311 | {"double", float_cons, 'd'}, | ||||
312 | /* dsect */ | ||||
313 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | ||||
314 | {"else", s_else, 0}, | ||||
315 | {"elsec", s_else, 0}, | ||||
316 | {"elseif", s_elseif, (int) O_ne}, | ||||
317 | {"end", s_end, 0}, | ||||
318 | {"endc", s_endif, 0}, | ||||
319 | {"endfunc", s_func, 1}, | ||||
320 | {"endif", s_endif, 0}, | ||||
321 | {"endm", s_bad_end, 0}, | ||||
322 | {"endr", s_bad_end, 1}, | ||||
323 | /* endef */ | ||||
324 | {"equ", s_set, 0}, | ||||
325 | {"equiv", s_set, 1}, | ||||
326 | {"eqv", s_set, -1}, | ||||
327 | {"err", s_err, 0}, | ||||
328 | {"error", s_errwarn, 1}, | ||||
329 | {"exitm", s_mexit, 0}, | ||||
330 | /* extend */ | ||||
331 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | ||||
332 | {"appfile", s_app_file, 1}, | ||||
333 | {"appline", s_app_line, 0}, | ||||
334 | {"fail", s_fail, 0}, | ||||
335 | {"file", s_app_file, 0}, | ||||
336 | {"fill", s_fill, 0}, | ||||
337 | {"float", float_cons, 'f'}, | ||||
338 | {"format", s_ignore, 0}, | ||||
339 | {"func", s_func, 0}, | ||||
340 | {"global", s_globl, 0}, | ||||
341 | {"globl", s_globl, 0}, | ||||
342 | {"hword", cons, 2}, | ||||
343 | {"if", s_if, (int) O_ne}, | ||||
344 | {"ifb", s_ifb, 1}, | ||||
345 | {"ifc", s_ifc, 0}, | ||||
346 | {"ifdef", s_ifdef, 0}, | ||||
347 | {"ifeq", s_if, (int) O_eq}, | ||||
348 | {"ifeqs", s_ifeqs, 0}, | ||||
349 | {"ifge", s_if, (int) O_ge}, | ||||
350 | {"ifgt", s_if, (int) O_gt}, | ||||
351 | {"ifle", s_if, (int) O_le}, | ||||
352 | {"iflt", s_if, (int) O_lt}, | ||||
353 | {"ifnb", s_ifb, 0}, | ||||
354 | {"ifnc", s_ifc, 1}, | ||||
355 | {"ifndef", s_ifdef, 1}, | ||||
356 | {"ifne", s_if, (int) O_ne}, | ||||
357 | {"ifnes", s_ifeqs, 1}, | ||||
358 | {"ifnotdef", s_ifdef, 1}, | ||||
359 | {"incbin", s_incbin, 0}, | ||||
360 | {"include", s_include, 0}, | ||||
361 | {"int", cons, 4}, | ||||
362 | {"irp", s_irp, 0}, | ||||
363 | {"irep", s_irp, 0}, | ||||
364 | {"irpc", s_irp, 1}, | ||||
365 | {"irepc", s_irp, 1}, | ||||
366 | {"lcomm", s_lcomm, 0}, | ||||
367 | {"lflags", listing_flags, 0}, /* Listing flags. */ | ||||
368 | {"linkonce", s_linkonce, 0}, | ||||
369 | {"list", listing_list, 1}, /* Turn listing on. */ | ||||
370 | {"llen", listing_psize, 1}, | ||||
371 | {"long", cons, 4}, | ||||
372 | {"lsym", s_lsym, 0}, | ||||
373 | {"macro", s_macro, 0}, | ||||
374 | {"mexit", s_mexit, 0}, | ||||
375 | {"mri", s_mri, 0}, | ||||
376 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | ||||
377 | {"name", s_ignore, 0}, | ||||
378 | {"noaltmacro", s_altmacro, 0}, | ||||
379 | {"noformat", s_ignore, 0}, | ||||
380 | {"nolist", listing_list, 0}, /* Turn listing off. */ | ||||
381 | {"nopage", listing_nopage, 0}, | ||||
382 | {"octa", cons, 16}, | ||||
383 | {"offset", s_struct, 0}, | ||||
384 | {"org", s_org, 0}, | ||||
385 | {"p2align", s_align_ptwo, 0}, | ||||
386 | {"p2alignw", s_align_ptwo, -2}, | ||||
387 | {"p2alignl", s_align_ptwo, -4}, | ||||
388 | {"page", listing_eject, 0}, | ||||
389 | {"plen", listing_psize, 0}, | ||||
390 | {"print", s_print, 0}, | ||||
391 | {"psize", listing_psize, 0}, /* Set paper size. */ | ||||
392 | {"purgem", s_purgem, 0}, | ||||
393 | {"quad", cons, 8}, | ||||
394 | {"rep", s_rept, 0}, | ||||
395 | {"rept", s_rept, 0}, | ||||
396 | {"rva", s_rva, 4}, | ||||
397 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ | ||||
398 | /* scl */ | ||||
399 | /* sect */ | ||||
400 | {"set", s_set, 0}, | ||||
401 | {"short", cons, 2}, | ||||
402 | {"single", float_cons, 'f'}, | ||||
403 | /* size */ | ||||
404 | {"space", s_space, 0}, | ||||
405 | {"skip", s_space, 0}, | ||||
406 | {"sleb128", s_leb128, 1}, | ||||
407 | {"spc", s_ignore, 0}, | ||||
408 | {"stabd", s_stab, 'd'}, | ||||
409 | {"stabn", s_stab, 'n'}, | ||||
410 | {"stabs", s_stab, 's'}, | ||||
411 | {"string", stringer, 1}, | ||||
412 | {"struct", s_struct, 0}, | ||||
413 | /* tag */ | ||||
414 | {"text", s_text, 0}, | ||||
415 | |||||
416 | /* This is for gcc to use. It's only just been added (2/94), so gcc | ||||
417 | won't be able to use it for a while -- probably a year or more. | ||||
418 | But once this has been released, check with gcc maintainers | ||||
419 | before deleting it or even changing the spelling. */ | ||||
420 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | ||||
421 | /* If we're folding case -- done for some targets, not necessarily | ||||
422 | all -- the above string in an input file will be converted to | ||||
423 | this one. Match it either way... */ | ||||
424 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | ||||
425 | |||||
426 | {"title", listing_title, 0}, /* Listing title. */ | ||||
427 | {"ttl", listing_title, 0}, | ||||
428 | /* type */ | ||||
429 | {"uleb128", s_leb128, 0}, | ||||
430 | /* use */ | ||||
431 | /* val */ | ||||
432 | {"xcom", s_comm, 0}, | ||||
433 | {"xdef", s_globl, 0}, | ||||
434 | {"xref", s_ignore, 0}, | ||||
435 | {"xstabs", s_xstab, 's'}, | ||||
436 | {"warning", s_errwarn, 0}, | ||||
437 | {"weakref", s_weakref, 0}, | ||||
438 | {"word", cons, 2}, | ||||
439 | {"zero", s_space, 0}, | ||||
440 | {NULL((void*)0), NULL((void*)0), 0} /* End sentinel. */ | ||||
441 | }; | ||||
442 | |||||
443 | static offsetT | ||||
444 | get_absolute_expr (expressionS *exp) | ||||
445 | { | ||||
446 | expression_and_evaluate (exp)expr (0, exp, expr_evaluate); | ||||
447 | if (exp->X_op != O_constant) | ||||
448 | { | ||||
449 | if (exp->X_op != O_absent) | ||||
450 | as_bad (_("bad or irreducible absolute expression")("bad or irreducible absolute expression")); | ||||
451 | exp->X_add_number = 0; | ||||
452 | } | ||||
453 | return exp->X_add_number; | ||||
454 | } | ||||
455 | |||||
456 | offsetT | ||||
457 | get_absolute_expression (void) | ||||
458 | { | ||||
459 | expressionS exp; | ||||
460 | |||||
461 | return get_absolute_expr (&exp); | ||||
462 | } | ||||
463 | |||||
464 | static int pop_override_ok = 0; | ||||
465 | static const char *pop_table_name; | ||||
466 | |||||
467 | void | ||||
468 | pop_insert (const pseudo_typeS *table) | ||||
469 | { | ||||
470 | const char *errtxt; | ||||
471 | const pseudo_typeS *pop; | ||||
472 | for (pop = table; pop->poc_name; pop++) | ||||
473 | { | ||||
474 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | ||||
475 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | ||||
476 | as_fatal (_("error constructing %s pseudo-op table: %s")("error constructing %s pseudo-op table: %s"), pop_table_name, | ||||
477 | errtxt); | ||||
478 | } | ||||
479 | } | ||||
480 | |||||
481 | #ifndef md_pop_insert | ||||
482 | #define md_pop_insert()pop_insert(md_pseudo_table) pop_insert(md_pseudo_table) | ||||
483 | #endif | ||||
484 | |||||
485 | #ifndef obj_pop_insert | ||||
486 | #define obj_pop_insert()elf_pop_insert() pop_insert(obj_pseudo_table) | ||||
487 | #endif | ||||
488 | |||||
489 | #ifndef cfi_pop_insert | ||||
490 | #define cfi_pop_insert()pop_insert(cfi_pseudo_table) pop_insert(cfi_pseudo_table) | ||||
491 | #endif | ||||
492 | |||||
493 | static void | ||||
494 | pobegin (void) | ||||
495 | { | ||||
496 | po_hash = hash_new (); | ||||
497 | |||||
498 | /* Do the target-specific pseudo ops. */ | ||||
499 | pop_table_name = "md"; | ||||
500 | md_pop_insert ()pop_insert(md_pseudo_table); | ||||
501 | |||||
502 | /* Now object specific. Skip any that were in the target table. */ | ||||
503 | pop_table_name = "obj"; | ||||
504 | pop_override_ok = 1; | ||||
505 | obj_pop_insert ()elf_pop_insert(); | ||||
506 | |||||
507 | /* Now portable ones. Skip any that we've seen already. */ | ||||
508 | pop_table_name = "standard"; | ||||
509 | pop_insert (potable); | ||||
510 | |||||
511 | #ifdef TARGET_USE_CFIPOP1 | ||||
512 | pop_table_name = "cfi"; | ||||
513 | pop_override_ok = 1; | ||||
514 | cfi_pop_insert ()pop_insert(cfi_pseudo_table); | ||||
515 | #endif | ||||
516 | } | ||||
517 | |||||
518 | #define HANDLE_CONDITIONAL_ASSEMBLY()if (ignore_input ()) { char *eol = find_end_of_line (input_line_pointer , 0); input_line_pointer = (input_line_pointer <= buffer_limit && eol >= buffer_limit) ? buffer_limit : eol + 1; continue; } \ | ||||
519 | if (ignore_input ()) \ | ||||
520 | { \ | ||||
521 | char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri0); \ | ||||
522 | input_line_pointer = (input_line_pointer <= buffer_limit \ | ||||
523 | && eol >= buffer_limit) \ | ||||
524 | ? buffer_limit \ | ||||
525 | : eol + 1; \ | ||||
526 | continue; \ | ||||
527 | } | ||||
528 | |||||
529 | /* This function is used when scrubbing the characters between #APP | ||||
530 | and #NO_APP. */ | ||||
531 | |||||
532 | static char *scrub_string; | ||||
533 | static char *scrub_string_end; | ||||
534 | |||||
535 | static int | ||||
536 | scrub_from_string (char *buf, int buflen) | ||||
537 | { | ||||
538 | int copy; | ||||
539 | |||||
540 | copy = scrub_string_end - scrub_string; | ||||
541 | if (copy > buflen) | ||||
542 | copy = buflen; | ||||
543 | memcpy (buf, scrub_string, copy); | ||||
544 | scrub_string += copy; | ||||
545 | return copy; | ||||
546 | } | ||||
547 | |||||
548 | /* Helper function of read_a_source_file, which tries to expand a macro. */ | ||||
549 | static int | ||||
550 | try_macro (char term, const char *line) | ||||
551 | { | ||||
552 | sb out; | ||||
553 | const char *err; | ||||
554 | macro_entry *macro; | ||||
555 | |||||
556 | if (check_macro (line, &out, &err, ¯o)) | ||||
557 | { | ||||
558 | if (err != NULL((void*)0)) | ||||
559 | as_bad ("%s", err); | ||||
560 | *input_line_pointer++ = term; | ||||
561 | input_scrub_include_sb (&out, | ||||
562 | input_line_pointer, 1); | ||||
563 | sb_kill (&out); | ||||
564 | buffer_limit = | ||||
565 | input_scrub_next_buffer (&input_line_pointer); | ||||
566 | #ifdef md_macro_info | ||||
567 | md_macro_info (macro); | ||||
568 | #endif | ||||
569 | return 1; | ||||
570 | } | ||||
571 | return 0; | ||||
572 | } | ||||
573 | |||||
574 | /* We read the file, putting things into a web that represents what we | ||||
575 | have been reading. */ | ||||
576 | void | ||||
577 | read_a_source_file (char *name) | ||||
578 | { | ||||
579 | register char c; | ||||
580 | register char *s; /* String of symbol, '\0' appended. */ | ||||
581 | register int temp; | ||||
582 | pseudo_typeS *pop; | ||||
583 | |||||
584 | #ifdef WARN_COMMENTS | ||||
585 | found_comment = 0; | ||||
586 | #endif | ||||
587 | |||||
588 | buffer = input_scrub_new_file (name); | ||||
589 | |||||
590 | listing_file (name); | ||||
591 | listing_newline (NULL((void*)0)); | ||||
592 | register_dependency (name); | ||||
593 | |||||
594 | /* Generate debugging information before we've read anything in to denote | ||||
595 | this file as the "main" source file and not a subordinate one | ||||
596 | (e.g. N_SO vs N_SOL in stabs). */ | ||||
597 | generate_file_debug (); | ||||
598 | |||||
599 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | ||||
600 | { /* We have another line to parse. */ | ||||
601 | #ifndef NO_LISTING | ||||
602 | /* In order to avoid listing macro expansion lines with labels | ||||
603 | multiple times, keep track of which line was last issued. */ | ||||
604 | static char *last_eol; | ||||
605 | |||||
606 | last_eol = NULL((void*)0); | ||||
607 | #endif | ||||
608 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | ||||
609 | |||||
610 | while (input_line_pointer < buffer_limit) | ||||
611 | { | ||||
612 | /* We have more of this buffer to parse. */ | ||||
613 | |||||
614 | /* We now have input_line_pointer->1st char of next line. | ||||
615 | If input_line_pointer [-1] == '\n' then we just | ||||
616 | scanned another line: so bump line counters. */ | ||||
617 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) | ||||
618 | { | ||||
619 | #ifdef md_start_line_hook | ||||
620 | md_start_line_hook (); | ||||
621 | #endif | ||||
622 | if (input_line_pointer[-1] == '\n') | ||||
623 | bump_line_counters (); | ||||
624 | |||||
625 | line_label = NULL((void*)0); | ||||
626 | |||||
627 | if (LABELS_WITHOUT_COLONS0 || flag_m68k_mri0) | ||||
628 | { | ||||
629 | /* Text at the start of a line must be a label, we | ||||
630 | run down and stick a colon in. */ | ||||
631 | if (is_name_beginner (*input_line_pointer)( lex_type[(unsigned char) (*input_line_pointer)] & (2) )) | ||||
632 | { | ||||
633 | char *line_start = input_line_pointer; | ||||
634 | char c; | ||||
635 | int mri_line_macro; | ||||
636 | |||||
637 | LISTING_NEWLINE (){ if (listing) listing_newline(((void*)0)); }; | ||||
638 | HANDLE_CONDITIONAL_ASSEMBLY ()if (ignore_input ()) { char *eol = find_end_of_line (input_line_pointer , 0); input_line_pointer = (input_line_pointer <= buffer_limit && eol >= buffer_limit) ? buffer_limit : eol + 1; continue; }; | ||||
639 | |||||
640 | c = get_symbol_end (); | ||||
641 | |||||
642 | /* In MRI mode, the EQU and MACRO pseudoops must | ||||
643 | be handled specially. */ | ||||
644 | mri_line_macro = 0; | ||||
645 | if (flag_m68k_mri0) | ||||
646 | { | ||||
647 | char *rest = input_line_pointer + 1; | ||||
648 | |||||
649 | if (*rest == ':') | ||||
650 | ++rest; | ||||
651 | if (*rest == ' ' || *rest == '\t') | ||||
652 | ++rest; | ||||
653 | if ((strncasecmp (rest, "EQU", 3) == 0 | ||||
654 | || strncasecmp (rest, "SET", 3) == 0) | ||||
655 | && (rest[3] == ' ' || rest[3] == '\t')) | ||||
656 | { | ||||
657 | input_line_pointer = rest + 3; | ||||
658 | equals (line_start, | ||||
659 | strncasecmp (rest, "SET", 3) == 0); | ||||
660 | continue; | ||||
661 | } | ||||
662 | if (strncasecmp (rest, "MACRO", 5) == 0 | ||||
663 | && (rest[5] == ' ' | ||||
664 | || rest[5] == '\t' | ||||
665 | || is_end_of_line[(unsigned char) rest[5]])) | ||||
666 | mri_line_macro = 1; | ||||
667 | } | ||||
668 | |||||
669 | /* In MRI mode, we need to handle the MACRO | ||||
670 | pseudo-op specially: we don't want to put the | ||||
671 | symbol in the symbol table. */ | ||||
672 | if (!mri_line_macro | ||||
673 | #ifdef TC_START_LABEL_WITHOUT_COLON | ||||
674 | && TC_START_LABEL_WITHOUT_COLON(c, | ||||
675 | input_line_pointer) | ||||
676 | #endif | ||||
677 | ) | ||||
678 | line_label = colon (line_start); | ||||
679 | else | ||||
680 | line_label = symbol_create (line_start, | ||||
681 | absolute_section((asection *) &bfd_abs_section), | ||||
682 | (valueT) 0, | ||||
683 | &zero_address_frag); | ||||
684 | |||||
685 | *input_line_pointer = c; | ||||
686 | if (c == ':') | ||||
687 | input_line_pointer++; | ||||
688 | } | ||||
689 | } | ||||
690 | } | ||||
691 | |||||
692 | /* We are at the beginning of a line, or similar place. | ||||
693 | We expect a well-formed assembler statement. | ||||
694 | A "symbol-name:" is a statement. | ||||
695 | |||||
696 | Depending on what compiler is used, the order of these tests | ||||
697 | may vary to catch most common case 1st. | ||||
698 | Each test is independent of all other tests at the (top) level. | ||||
699 | PLEASE make a compiler that doesn't use this assembler. | ||||
700 | It is crufty to waste a compiler's time encoding things for this | ||||
701 | assembler, which then wastes more time decoding it. | ||||
702 | (And communicating via (linear) files is silly! | ||||
703 | If you must pass stuff, please pass a tree!) */ | ||||
704 | if ((c = *input_line_pointer++) == '\t' | ||||
705 | || c == ' ' | ||||
706 | || c == '\f' | ||||
707 | || c == 0) | ||||
708 | c = *input_line_pointer++; | ||||
709 | |||||
710 | know (c != ' '); /* No further leading whitespace. */ | ||||
711 | |||||
712 | #ifndef NO_LISTING | ||||
713 | /* If listing is on, and we are expanding a macro, then give | ||||
714 | the listing code the contents of the expanded line. */ | ||||
715 | if (listing) | ||||
716 | { | ||||
717 | if ((listing & LISTING_MACEXP64) && macro_nest > 0) | ||||
718 | { | ||||
719 | char *copy; | ||||
720 | int len; | ||||
721 | |||||
722 | /* Find the end of the current expanded macro line. */ | ||||
723 | s = find_end_of_line (input_line_pointer - 1, flag_m68k_mri0); | ||||
724 | |||||
725 | if (s != last_eol) | ||||
726 | { | ||||
727 | last_eol = s; | ||||
728 | /* Copy it for safe keeping. Also give an indication of | ||||
729 | how much macro nesting is involved at this point. */ | ||||
730 | len = s - (input_line_pointer - 1); | ||||
731 | copy = (char *) xmalloc (len + macro_nest + 2); | ||||
732 | memset (copy, '>', macro_nest); | ||||
733 | copy[macro_nest] = ' '; | ||||
734 | memcpy (copy + macro_nest + 1, input_line_pointer - 1, len); | ||||
735 | copy[macro_nest + 1 + len] = '\0'; | ||||
736 | |||||
737 | /* Install the line with the listing facility. */ | ||||
738 | listing_newline (copy); | ||||
739 | } | ||||
740 | } | ||||
741 | else | ||||
742 | listing_newline (NULL((void*)0)); | ||||
743 | } | ||||
744 | #endif | ||||
745 | /* C is the 1st significant character. | ||||
746 | Input_line_pointer points after that character. */ | ||||
747 | if (is_name_beginner (c)( lex_type[(unsigned char) (c)] & (2) )) | ||||
748 | { | ||||
749 | /* Want user-defined label or pseudo/opcode. */ | ||||
750 | HANDLE_CONDITIONAL_ASSEMBLY ()if (ignore_input ()) { char *eol = find_end_of_line (input_line_pointer , 0); input_line_pointer = (input_line_pointer <= buffer_limit && eol >= buffer_limit) ? buffer_limit : eol + 1; continue; }; | ||||
751 | |||||
752 | s = --input_line_pointer; | ||||
753 | c = get_symbol_end (); /* name's delimiter. */ | ||||
754 | |||||
755 | /* C is character after symbol. | ||||
756 | That character's place in the input line is now '\0'. | ||||
757 | S points to the beginning of the symbol. | ||||
758 | [In case of pseudo-op, s->'.'.] | ||||
759 | Input_line_pointer->'\0' where c was. */ | ||||
760 | if (TC_START_LABEL (c, input_line_pointer)(c == ':')) | ||||
761 | { | ||||
762 | if (flag_m68k_mri0) | ||||
763 | { | ||||
764 | char *rest = input_line_pointer + 1; | ||||
765 | |||||
766 | /* In MRI mode, \tsym: set 0 is permitted. */ | ||||
767 | if (*rest == ':') | ||||
768 | ++rest; | ||||
769 | |||||
770 | if (*rest == ' ' || *rest == '\t') | ||||
771 | ++rest; | ||||
772 | |||||
773 | if ((strncasecmp (rest, "EQU", 3) == 0 | ||||
774 | || strncasecmp (rest, "SET", 3) == 0) | ||||
775 | && (rest[3] == ' ' || rest[3] == '\t')) | ||||
776 | { | ||||
777 | input_line_pointer = rest + 3; | ||||
778 | equals (s, 1); | ||||
779 | continue; | ||||
780 | } | ||||
781 | } | ||||
782 | |||||
783 | line_label = colon (s); /* User-defined label. */ | ||||
784 | /* Put ':' back for error messages' sake. */ | ||||
785 | *input_line_pointer++ = ':'; | ||||
786 | #ifdef tc_check_label | ||||
787 | tc_check_label (line_label); | ||||
788 | #endif | ||||
789 | /* Input_line_pointer->after ':'. */ | ||||
790 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
791 | } | ||||
792 | else if (input_line_pointer[1] == '=' | ||||
793 | && (c == '=' | ||||
794 | || ((c == ' ' || c == '\t') | ||||
795 | && input_line_pointer[2] == '='))) | ||||
796 | { | ||||
797 | equals (s, -1); | ||||
798 | demand_empty_rest_of_line (); | ||||
799 | } | ||||
800 | else if ((c == '=' | ||||
801 | || ((c == ' ' || c == '\t') | ||||
802 | && input_line_pointer[1] == '=')) | ||||
803 | #ifdef TC_EQUAL_IN_INSN | ||||
804 | && !TC_EQUAL_IN_INSN (c, s) | ||||
805 | #endif | ||||
806 | ) | ||||
807 | { | ||||
808 | equals (s, 1); | ||||
809 | demand_empty_rest_of_line (); | ||||
810 | } | ||||
811 | else | ||||
812 | { | ||||
813 | /* Expect pseudo-op or machine instruction. */ | ||||
814 | pop = NULL((void*)0); | ||||
815 | |||||
816 | #ifndef TC_CASE_SENSITIVE | ||||
817 | { | ||||
818 | char *s2 = s; | ||||
819 | |||||
820 | strncpy (original_case_string, s2, sizeof (original_case_string)); | ||||
821 | original_case_string[sizeof (original_case_string) - 1] = 0; | ||||
822 | |||||
823 | while (*s2) | ||||
824 | { | ||||
825 | *s2 = TOLOWER (*s2)_sch_tolower[(*s2) & 0xff]; | ||||
826 | s2++; | ||||
827 | } | ||||
828 | } | ||||
829 | #endif | ||||
830 | if (NO_PSEUDO_DOT0 || flag_m68k_mri0) | ||||
831 | { | ||||
832 | /* The MRI assembler uses pseudo-ops without | ||||
833 | a period. */ | ||||
834 | pop = (pseudo_typeS *) hash_find (po_hash, s); | ||||
835 | if (pop != NULL((void*)0) && pop->poc_handler == NULL((void*)0)) | ||||
836 | pop = NULL((void*)0); | ||||
837 | } | ||||
838 | |||||
839 | if (pop != NULL((void*)0) | ||||
840 | || (!flag_m68k_mri0 && *s == '.')) | ||||
841 | { | ||||
842 | /* PSEUDO - OP. | ||||
843 | |||||
844 | WARNING: c has next char, which may be end-of-line. | ||||
845 | We lookup the pseudo-op table with s+1 because we | ||||
846 | already know that the pseudo-op begins with a '.'. */ | ||||
847 | |||||
848 | if (pop == NULL((void*)0)) | ||||
849 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | ||||
850 | if (pop && !pop->poc_handler) | ||||
851 | pop = NULL((void*)0); | ||||
852 | |||||
853 | /* In MRI mode, we may need to insert an | ||||
854 | automatic alignment directive. What a hack | ||||
855 | this is. */ | ||||
856 | if (mri_pending_align | ||||
857 | && (pop == NULL((void*)0) | ||||
858 | || !((pop->poc_handler == cons | ||||
859 | && pop->poc_val == 1) | ||||
860 | || (pop->poc_handler == s_space | ||||
861 | && pop->poc_val == 1) | ||||
862 | #ifdef tc_conditional_pseudoop | ||||
863 | || tc_conditional_pseudoop (pop) | ||||
864 | #endif | ||||
865 | || pop->poc_handler == s_if | ||||
866 | || pop->poc_handler == s_ifdef | ||||
867 | || pop->poc_handler == s_ifc | ||||
868 | || pop->poc_handler == s_ifeqs | ||||
869 | || pop->poc_handler == s_else | ||||
870 | || pop->poc_handler == s_endif | ||||
871 | || pop->poc_handler == s_globl | ||||
872 | || pop->poc_handler == s_ignore))) | ||||
873 | { | ||||
874 | do_align (1, (char *) NULL((void*)0), 0, 0); | ||||
875 | mri_pending_align = 0; | ||||
876 | |||||
877 | if (line_label != NULL((void*)0)) | ||||
878 | { | ||||
879 | symbol_set_frag (line_label, frag_now); | ||||
880 | S_SET_VALUE (line_label, frag_now_fix ()); | ||||
881 | } | ||||
882 | } | ||||
883 | |||||
884 | /* Print the error msg now, while we still can. */ | ||||
885 | if (pop == NULL((void*)0)) | ||||
886 | { | ||||
887 | char *end = input_line_pointer; | ||||
888 | |||||
889 | *input_line_pointer = c; | ||||
890 | s_ignore (0); | ||||
891 | c = *--input_line_pointer; | ||||
892 | *input_line_pointer = '\0'; | ||||
893 | if (! macro_defined || ! try_macro (c, s)) | ||||
894 | { | ||||
895 | *end = '\0'; | ||||
896 | as_bad (_("unknown pseudo-op: `%s'")("unknown pseudo-op: `%s'"), s); | ||||
897 | *input_line_pointer++ = c; | ||||
898 | } | ||||
899 | continue; | ||||
900 | } | ||||
901 | |||||
902 | /* Put it back for error messages etc. */ | ||||
903 | *input_line_pointer = c; | ||||
904 | /* The following skip of whitespace is compulsory. | ||||
905 | A well shaped space is sometimes all that separates | ||||
906 | keyword from operands. */ | ||||
907 | if (c == ' ' || c == '\t') | ||||
908 | input_line_pointer++; | ||||
909 | |||||
910 | /* Input_line is restored. | ||||
911 | Input_line_pointer->1st non-blank char | ||||
912 | after pseudo-operation. */ | ||||
913 | (*pop->poc_handler) (pop->poc_val); | ||||
914 | |||||
915 | /* If that was .end, just get out now. */ | ||||
916 | if (pop->poc_handler == s_end) | ||||
917 | goto quit; | ||||
918 | } | ||||
919 | else | ||||
920 | { | ||||
921 | /* WARNING: c has char, which may be end-of-line. */ | ||||
922 | /* Also: input_line_pointer->`\0` where c was. */ | ||||
923 | *input_line_pointer = c; | ||||
924 | input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri0, 1); | ||||
925 | c = *input_line_pointer; | ||||
926 | *input_line_pointer = '\0'; | ||||
927 | |||||
928 | generate_lineno_debug (); | ||||
929 | |||||
930 | if (macro_defined && try_macro (c, s)) | ||||
931 | continue; | ||||
932 | |||||
933 | if (mri_pending_align) | ||||
934 | { | ||||
935 | do_align (1, (char *) NULL((void*)0), 0, 0); | ||||
936 | mri_pending_align = 0; | ||||
937 | if (line_label != NULL((void*)0)) | ||||
938 | { | ||||
939 | symbol_set_frag (line_label, frag_now); | ||||
940 | S_SET_VALUE (line_label, frag_now_fix ()); | ||||
941 | } | ||||
942 | } | ||||
943 | |||||
944 | md_assemble (s); /* Assemble 1 instruction. */ | ||||
945 | |||||
946 | *input_line_pointer++ = c; | ||||
947 | |||||
948 | /* We resume loop AFTER the end-of-line from | ||||
949 | this instruction. */ | ||||
950 | } | ||||
951 | } | ||||
952 | continue; | ||||
953 | } | ||||
954 | |||||
955 | /* Empty statement? */ | ||||
956 | if (is_end_of_line[(unsigned char) c]) | ||||
957 | continue; | ||||
958 | |||||
959 | if ((LOCAL_LABELS_DOLLAR0 || LOCAL_LABELS_FB1) && ISDIGIT (c)(_sch_istable[(c) & 0xff] & (unsigned short)(_sch_isdigit ))) | ||||
960 | { | ||||
961 | /* local label ("4:") */ | ||||
962 | char *backup = input_line_pointer; | ||||
963 | |||||
964 | HANDLE_CONDITIONAL_ASSEMBLY ()if (ignore_input ()) { char *eol = find_end_of_line (input_line_pointer , 0); input_line_pointer = (input_line_pointer <= buffer_limit && eol >= buffer_limit) ? buffer_limit : eol + 1; continue; }; | ||||
965 | |||||
966 | temp = c - '0'; | ||||
967 | |||||
968 | /* Read the whole number. */ | ||||
969 | while (ISDIGIT (*input_line_pointer)(_sch_istable[(*input_line_pointer) & 0xff] & (unsigned short)(_sch_isdigit))) | ||||
970 | { | ||||
971 | temp = (temp * 10) + *input_line_pointer - '0'; | ||||
972 | ++input_line_pointer; | ||||
973 | } | ||||
974 | |||||
975 | if (LOCAL_LABELS_DOLLAR0 | ||||
976 | && *input_line_pointer == '$' | ||||
977 | && *(input_line_pointer + 1) == ':') | ||||
978 | { | ||||
979 | input_line_pointer += 2; | ||||
980 | |||||
981 | if (dollar_label_defined (temp)) | ||||
982 | { | ||||
983 | as_fatal (_("label \"%d$\" redefined")("label \"%d$\" redefined"), temp); | ||||
984 | } | ||||
985 | |||||
986 | define_dollar_label (temp); | ||||
987 | colon (dollar_label_name (temp, 0)); | ||||
988 | continue; | ||||
989 | } | ||||
990 | |||||
991 | if (LOCAL_LABELS_FB1 | ||||
992 | && *input_line_pointer++ == ':') | ||||
993 | { | ||||
994 | fb_label_instance_inc (temp); | ||||
995 | colon (fb_label_name (temp, 0)); | ||||
996 | continue; | ||||
997 | } | ||||
998 | |||||
999 | input_line_pointer = backup; | ||||
1000 | } /* local label ("4:") */ | ||||
1001 | |||||
1002 | if (c && strchr (line_comment_chars, c)) | ||||
1003 | { /* Its a comment. Better say APP or NO_APP. */ | ||||
1004 | sb sbuf; | ||||
1005 | char *ends; | ||||
1006 | char *new_buf; | ||||
1007 | char *new_tmp; | ||||
1008 | unsigned int new_length; | ||||
1009 | char *tmp_buf = 0; | ||||
1010 | |||||
1011 | bump_line_counters (); | ||||
1012 | s = input_line_pointer; | ||||
1013 | if (strncmp (s, "APP\n", 4)) | ||||
1014 | continue; /* We ignore it */ | ||||
1015 | s += 4; | ||||
1016 | |||||
1017 | sb_new (&sbuf); | ||||
1018 | ends = strstr (s, "#NO_APP\n"); | ||||
1019 | |||||
1020 | if (!ends) | ||||
1021 | { | ||||
1022 | unsigned int tmp_len; | ||||
1023 | unsigned int num; | ||||
1024 | |||||
1025 | /* The end of the #APP wasn't in this buffer. We | ||||
1026 | keep reading in buffers until we find the #NO_APP | ||||
1027 | that goes with this #APP There is one. The specs | ||||
1028 | guarantee it... */ | ||||
1029 | tmp_len = buffer_limit - s; | ||||
1030 | tmp_buf = xmalloc (tmp_len + 1); | ||||
1031 | memcpy (tmp_buf, s, tmp_len); | ||||
1032 | do | ||||
1033 | { | ||||
1034 | new_tmp = input_scrub_next_buffer (&buffer); | ||||
1035 | if (!new_tmp) | ||||
1036 | break; | ||||
1037 | else | ||||
1038 | buffer_limit = new_tmp; | ||||
1039 | input_line_pointer = buffer; | ||||
1040 | ends = strstr (buffer, "#NO_APP\n"); | ||||
1041 | if (ends) | ||||
1042 | num = ends - buffer; | ||||
1043 | else | ||||
1044 | num = buffer_limit - buffer; | ||||
1045 | |||||
1046 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | ||||
1047 | memcpy (tmp_buf + tmp_len, buffer, num); | ||||
1048 | tmp_len += num; | ||||
1049 | } | ||||
1050 | while (!ends); | ||||
1051 | |||||
1052 | input_line_pointer = ends ? ends + 8 : NULL((void*)0); | ||||
1053 | |||||
1054 | s = tmp_buf; | ||||
1055 | ends = s + tmp_len; | ||||
1056 | |||||
1057 | } | ||||
1058 | else | ||||
1059 | { | ||||
1060 | input_line_pointer = ends + 8; | ||||
1061 | } | ||||
1062 | |||||
1063 | scrub_string = s; | ||||
1064 | scrub_string_end = ends; | ||||
1065 | |||||
1066 | new_length = ends - s; | ||||
1067 | new_buf = (char *) xmalloc (new_length); | ||||
1068 | new_tmp = new_buf; | ||||
1069 | for (;;) | ||||
1070 | { | ||||
1071 | int space; | ||||
1072 | int size; | ||||
1073 | |||||
1074 | space = (new_buf + new_length) - new_tmp; | ||||
1075 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | ||||
1076 | |||||
1077 | if (size < space) | ||||
1078 | { | ||||
1079 | new_tmp[size] = 0; | ||||
1080 | break; | ||||
1081 | } | ||||
1082 | |||||
1083 | new_buf = xrealloc (new_buf, new_length + 100); | ||||
1084 | new_tmp = new_buf + new_length; | ||||
1085 | new_length += 100; | ||||
1086 | } | ||||
1087 | |||||
1088 | if (tmp_buf) | ||||
1089 | free (tmp_buf); | ||||
1090 | |||||
1091 | /* We've "scrubbed" input to the preferred format. In the | ||||
1092 | process we may have consumed the whole of the remaining | ||||
1093 | file (and included files). We handle this formatted | ||||
1094 | input similar to that of macro expansion, letting | ||||
1095 | actual macro expansion (possibly nested) and other | ||||
1096 | input expansion work. Beware that in messages, line | ||||
1097 | numbers and possibly file names will be incorrect. */ | ||||
1098 | sb_add_string (&sbuf, new_buf); | ||||
1099 | input_scrub_include_sb (&sbuf, input_line_pointer, 0); | ||||
1100 | sb_kill (&sbuf); | ||||
1101 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | ||||
1102 | free (new_buf); | ||||
1103 | continue; | ||||
1104 | } | ||||
1105 | |||||
1106 | HANDLE_CONDITIONAL_ASSEMBLY ()if (ignore_input ()) { char *eol = find_end_of_line (input_line_pointer , 0); input_line_pointer = (input_line_pointer <= buffer_limit && eol >= buffer_limit) ? buffer_limit : eol + 1; continue; }; | ||||
1107 | |||||
1108 | #ifdef tc_unrecognized_line | ||||
1109 | if (tc_unrecognized_line (c)) | ||||
1110 | continue; | ||||
1111 | #endif | ||||
1112 | input_line_pointer--; | ||||
1113 | /* Report unknown char as ignored. */ | ||||
1114 | demand_empty_rest_of_line (); | ||||
1115 | } | ||||
1116 | |||||
1117 | #ifdef md_after_pass_hook | ||||
1118 | md_after_pass_hook (); | ||||
1119 | #endif | ||||
1120 | } | ||||
1121 | |||||
1122 | quit: | ||||
1123 | |||||
1124 | #ifdef md_cleanup | ||||
1125 | md_cleanup (); | ||||
1126 | #endif | ||||
1127 | /* Close the input file. */ | ||||
1128 | input_scrub_close (); | ||||
1129 | #ifdef WARN_COMMENTS | ||||
1130 | { | ||||
1131 | if (warn_comment && found_comment) | ||||
1132 | as_warn_where (found_comment_file, found_comment, | ||||
1133 | "first comment found here"); | ||||
1134 | } | ||||
1135 | #endif | ||||
1136 | } | ||||
1137 | |||||
1138 | /* Convert O_constant expression EXP into the equivalent O_big representation. | ||||
1139 | Take the sign of the number from X_unsigned rather than X_add_number. */ | ||||
1140 | |||||
1141 | static void | ||||
1142 | convert_to_bignum (expressionS *exp) | ||||
1143 | { | ||||
1144 | valueT value; | ||||
1145 | unsigned int i; | ||||
1146 | |||||
1147 | value = exp->X_add_number; | ||||
1148 | for (i = 0; i < sizeof (exp->X_add_number) / CHARS_PER_LITTLENUM(1 << (1)); i++) | ||||
1149 | { | ||||
1150 | generic_bignum[i] = value & LITTLENUM_MASK(0xFFFF); | ||||
1151 | value >>= LITTLENUM_NUMBER_OF_BITS(16); | ||||
1152 | } | ||||
1153 | /* Add a sequence of sign bits if the top bit of X_add_number is not | ||||
1154 | the sign of the original value. */ | ||||
1155 | if ((exp->X_add_number < 0) != !exp->X_unsigned) | ||||
1156 | generic_bignum[i++] = exp->X_unsigned ? 0 : LITTLENUM_MASK(0xFFFF); | ||||
1157 | exp->X_op = O_big; | ||||
1158 | exp->X_add_number = i; | ||||
1159 | } | ||||
1160 | |||||
1161 | /* For most MRI pseudo-ops, the line actually ends at the first | ||||
1162 | nonquoted space. This function looks for that point, stuffs a null | ||||
1163 | in, and sets *STOPCP to the character that used to be there, and | ||||
1164 | returns the location. | ||||
1165 | |||||
1166 | Until I hear otherwise, I am going to assume that this is only true | ||||
1167 | for the m68k MRI assembler. */ | ||||
1168 | |||||
1169 | char * | ||||
1170 | mri_comment_field (char *stopcp) | ||||
1171 | { | ||||
1172 | char *s; | ||||
1173 | #ifdef TC_M68K | ||||
1174 | int inquote = 0; | ||||
1175 | |||||
1176 | know (flag_m68k_mri); | ||||
1177 | |||||
1178 | for (s = input_line_pointer; | ||||
1179 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') | ||||
1180 | || inquote); | ||||
1181 | s++) | ||||
1182 | { | ||||
1183 | if (*s == '\'') | ||||
1184 | inquote = !inquote; | ||||
1185 | } | ||||
1186 | #else | ||||
1187 | for (s = input_line_pointer; | ||||
1188 | !is_end_of_line[(unsigned char) *s]; | ||||
1189 | s++) | ||||
1190 | ; | ||||
1191 | #endif | ||||
1192 | *stopcp = *s; | ||||
1193 | *s = '\0'; | ||||
1194 | |||||
1195 | return s; | ||||
1196 | } | ||||
1197 | |||||
1198 | /* Skip to the end of an MRI comment field. */ | ||||
1199 | |||||
1200 | void | ||||
1201 | mri_comment_end (char *stop, int stopc) | ||||
1202 | { | ||||
1203 | know (flag_mri); | ||||
1204 | |||||
1205 | input_line_pointer = stop; | ||||
1206 | *stop = stopc; | ||||
1207 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | ||||
1208 | ++input_line_pointer; | ||||
1209 | } | ||||
1210 | |||||
1211 | void | ||||
1212 | s_abort (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
1213 | { | ||||
1214 | as_fatal (_(".abort detected. Abandoning ship.")(".abort detected. Abandoning ship.")); | ||||
1215 | } | ||||
1216 | |||||
1217 | /* Guts of .align directive. N is the power of two to which to align. | ||||
1218 | FILL may be NULL, or it may point to the bytes of the fill pattern. | ||||
1219 | LEN is the length of whatever FILL points to, if anything. MAX is | ||||
1220 | the maximum number of characters to skip when doing the alignment, | ||||
1221 | or 0 if there is no maximum. */ | ||||
1222 | |||||
1223 | static void | ||||
1224 | do_align (int n, char *fill, int len, int max) | ||||
1225 | { | ||||
1226 | if (now_seg == absolute_section((asection *) &bfd_abs_section)) | ||||
1227 | { | ||||
1228 | if (fill != NULL((void*)0)) | ||||
1229 | while (len-- > 0) | ||||
1230 | if (*fill++ != '\0') | ||||
1231 | { | ||||
1232 | as_warn (_("ignoring fill value in absolute section")("ignoring fill value in absolute section")); | ||||
1233 | break; | ||||
1234 | } | ||||
1235 | fill = NULL((void*)0); | ||||
1236 | len = 0; | ||||
1237 | } | ||||
1238 | |||||
1239 | #ifdef md_flush_pending_output | ||||
1240 | md_flush_pending_output (); | ||||
1241 | #endif | ||||
1242 | #ifdef md_do_align | ||||
1243 | md_do_align (n, fill, len, max, just_record_alignment)if ((n) && !need_pass_2 && optimize_align_code && (!(fill) || ((char)*(fill) == (char)0x90 && (len) == 1)) && subseg_text_p (now_seg)) { frag_align_code ((n), (max)); goto just_record_alignment; }; | ||||
1244 | #endif | ||||
1245 | |||||
1246 | /* Only make a frag if we HAVE to... */ | ||||
1247 | if (n != 0 && !need_pass_2) | ||||
1248 | { | ||||
1249 | if (fill == NULL((void*)0)) | ||||
1250 | { | ||||
1251 | if (subseg_text_p (now_seg)) | ||||
1252 | frag_align_code (n, max); | ||||
1253 | else | ||||
1254 | frag_align (n, 0, max); | ||||
1255 | } | ||||
1256 | else if (len <= 1) | ||||
1257 | frag_align (n, *fill, max); | ||||
1258 | else | ||||
1259 | frag_align_pattern (n, fill, len, max); | ||||
1260 | } | ||||
1261 | |||||
1262 | #ifdef md_do_align | ||||
1263 | just_record_alignment: ATTRIBUTE_UNUSED_LABEL__attribute__ ((__unused__)) | ||||
1264 | #endif | ||||
1265 | |||||
1266 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER0); | ||||
1267 | } | ||||
1268 | |||||
1269 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | ||||
1270 | (in bytes). A negative ARG is the negative of the length of the | ||||
1271 | fill pattern. BYTES_P is non-zero if the alignment value should be | ||||
1272 | interpreted as the byte boundary, rather than the power of 2. */ | ||||
1273 | |||||
1274 | #define ALIGN_LIMIT(stdoutput->arch_info->bits_per_address - 1) (stdoutput->arch_info->bits_per_address - 1) | ||||
1275 | |||||
1276 | static void | ||||
1277 | s_align (int arg, int bytes_p) | ||||
1278 | { | ||||
1279 | unsigned int align_limit = ALIGN_LIMIT(stdoutput->arch_info->bits_per_address - 1); | ||||
1280 | unsigned int align; | ||||
1281 | char *stop = NULL((void*)0); | ||||
1282 | char stopc; | ||||
1283 | offsetT fill = 0; | ||||
1284 | int max; | ||||
1285 | int fill_p; | ||||
1286 | |||||
1287 | if (flag_mri) | ||||
1288 | stop = mri_comment_field (&stopc); | ||||
1289 | |||||
1290 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | ||||
1291 | { | ||||
1292 | if (arg < 0) | ||||
1293 | align = 0; | ||||
1294 | else | ||||
1295 | align = arg; /* Default value from pseudo-op table. */ | ||||
1296 | } | ||||
1297 | else | ||||
1298 | { | ||||
1299 | align = get_absolute_expression (); | ||||
1300 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
1301 | } | ||||
1302 | |||||
1303 | if (bytes_p) | ||||
1304 | { | ||||
1305 | /* Convert to a power of 2. */ | ||||
1306 | if (align != 0) | ||||
1307 | { | ||||
1308 | unsigned int i; | ||||
1309 | |||||
1310 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | ||||
1311 | ; | ||||
1312 | if (align != 1) | ||||
1313 | as_bad (_("alignment not a power of 2")("alignment not a power of 2")); | ||||
1314 | |||||
1315 | align = i; | ||||
1316 | } | ||||
1317 | } | ||||
1318 | |||||
1319 | if (align > align_limit) | ||||
1320 | { | ||||
1321 | align = align_limit; | ||||
1322 | as_warn (_("alignment too large: %u assumed")("alignment too large: %u assumed"), align); | ||||
1323 | } | ||||
1324 | |||||
1325 | if (*input_line_pointer != ',') | ||||
1326 | { | ||||
1327 | fill_p = 0; | ||||
1328 | max = 0; | ||||
1329 | } | ||||
1330 | else | ||||
1331 | { | ||||
1332 | ++input_line_pointer; | ||||
1333 | if (*input_line_pointer == ',') | ||||
1334 | fill_p = 0; | ||||
1335 | else | ||||
1336 | { | ||||
1337 | fill = get_absolute_expression (); | ||||
1338 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
1339 | fill_p = 1; | ||||
1340 | } | ||||
1341 | |||||
1342 | if (*input_line_pointer != ',') | ||||
1343 | max = 0; | ||||
1344 | else | ||||
1345 | { | ||||
1346 | ++input_line_pointer; | ||||
1347 | max = get_absolute_expression (); | ||||
1348 | } | ||||
1349 | } | ||||
1350 | |||||
1351 | if (!fill_p) | ||||
1352 | { | ||||
1353 | if (arg < 0) | ||||
1354 | as_warn (_("expected fill pattern missing")("expected fill pattern missing")); | ||||
1355 | do_align (align, (char *) NULL((void*)0), 0, max); | ||||
1356 | } | ||||
1357 | else | ||||
1358 | { | ||||
1359 | int fill_len; | ||||
1360 | |||||
1361 | if (arg >= 0) | ||||
1362 | fill_len = 1; | ||||
1363 | else | ||||
1364 | fill_len = -arg; | ||||
1365 | if (fill_len <= 1) | ||||
1366 | { | ||||
1367 | char fill_char; | ||||
1368 | |||||
1369 | fill_char = fill; | ||||
1370 | do_align (align, &fill_char, fill_len, max); | ||||
1371 | } | ||||
1372 | else | ||||
1373 | { | ||||
1374 | char ab[16]; | ||||
1375 | |||||
1376 | if ((size_t) fill_len > sizeof ab) | ||||
1377 | abort ()as_abort ("/usr/src/gnu/usr.bin/binutils-2.17/gas/read.c", 1377 , __PRETTY_FUNCTION__); | ||||
1378 | md_number_to_charsnumber_to_chars_littleendian (ab, fill, fill_len); | ||||
1379 | do_align (align, ab, fill_len, max); | ||||
1380 | } | ||||
1381 | } | ||||
1382 | |||||
1383 | demand_empty_rest_of_line (); | ||||
1384 | |||||
1385 | if (flag_mri) | ||||
1386 | mri_comment_end (stop, stopc); | ||||
1387 | } | ||||
1388 | |||||
1389 | /* Handle the .align pseudo-op on machines where ".align 4" means | ||||
1390 | align to a 4 byte boundary. */ | ||||
1391 | |||||
1392 | void | ||||
1393 | s_align_bytes (int arg) | ||||
1394 | { | ||||
1395 | s_align (arg, 1); | ||||
1396 | } | ||||
1397 | |||||
1398 | /* Handle the .align pseudo-op on machines where ".align 4" means align | ||||
1399 | to a 2**4 boundary. */ | ||||
1400 | |||||
1401 | void | ||||
1402 | s_align_ptwo (int arg) | ||||
1403 | { | ||||
1404 | s_align (arg, 0); | ||||
1405 | } | ||||
1406 | |||||
1407 | /* Switch in and out of alternate macro mode. */ | ||||
1408 | |||||
1409 | void | ||||
1410 | s_altmacro (int on) | ||||
1411 | { | ||||
1412 | demand_empty_rest_of_line (); | ||||
1413 | macro_set_alternate (on); | ||||
1414 | } | ||||
1415 | |||||
1416 | symbolS * | ||||
1417 | s_comm_internal (int param, | ||||
1418 | symbolS *(*comm_parse_extra) (int, symbolS *, addressT)) | ||||
1419 | { | ||||
1420 | char *name; | ||||
1421 | char c; | ||||
1422 | char *p; | ||||
1423 | offsetT temp, size; | ||||
1424 | symbolS *symbolP = NULL((void*)0); | ||||
1425 | char *stop = NULL((void*)0); | ||||
1426 | char stopc; | ||||
1427 | expressionS exp; | ||||
1428 | |||||
1429 | if (flag_mri) | ||||
1430 | stop = mri_comment_field (&stopc); | ||||
1431 | |||||
1432 | name = input_line_pointer; | ||||
1433 | c = get_symbol_end (); | ||||
1434 | /* Just after name is now '\0'. */ | ||||
1435 | p = input_line_pointer; | ||||
1436 | *p = c; | ||||
1437 | |||||
1438 | if (name == p) | ||||
1439 | { | ||||
1440 | as_bad (_("expected symbol name")("expected symbol name")); | ||||
1441 | ignore_rest_of_line (); | ||||
1442 | goto out; | ||||
1443 | } | ||||
1444 | |||||
1445 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
1446 | |||||
1447 | /* Accept an optional comma after the name. The comma used to be | ||||
1448 | required, but Irix 5 cc does not generate it for .lcomm. */ | ||||
1449 | if (*input_line_pointer == ',') | ||||
1450 | input_line_pointer++; | ||||
1451 | |||||
1452 | temp = get_absolute_expr (&exp); | ||||
1453 | size = temp; | ||||
1454 | size &= ((offsetT) 2 << (stdoutput->arch_info->bits_per_address - 1)) - 1; | ||||
1455 | if (exp.X_op == O_absent) | ||||
1456 | { | ||||
1457 | as_bad (_("missing size expression")("missing size expression")); | ||||
1458 | ignore_rest_of_line (); | ||||
1459 | goto out; | ||||
1460 | } | ||||
1461 | else if (temp != size || !exp.X_unsigned) | ||||
1462 | { | ||||
1463 | as_warn (_("size (%ld) out of range, ignored")("size (%ld) out of range, ignored"), (long) temp); | ||||
1464 | ignore_rest_of_line (); | ||||
1465 | goto out; | ||||
1466 | } | ||||
1467 | |||||
1468 | *p = 0; | ||||
1469 | symbolP = symbol_find_or_make (name); | ||||
1470 | if ((S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) | ||||
1471 | && !S_IS_COMMON (symbolP)) | ||||
1472 | { | ||||
1473 | if (!S_IS_VOLATILE (symbolP)) | ||||
1474 | { | ||||
1475 | symbolP = NULL((void*)0); | ||||
1476 | as_bad (_("symbol `%s' is already defined")("symbol `%s' is already defined"), name); | ||||
1477 | *p = c; | ||||
1478 | ignore_rest_of_line (); | ||||
1479 | goto out; | ||||
1480 | } | ||||
1481 | /* This could be avoided when the symbol wasn't used so far, but | ||||
1482 | the comment in struc-symbol.h says this flag isn't reliable. */ | ||||
1483 | if (1 || !symbol_used_p (symbolP)) | ||||
1484 | symbolP = symbol_clone (symbolP, 1); | ||||
1485 | S_SET_SEGMENT (symbolP, undefined_section((asection *) &bfd_und_section)); | ||||
1486 | S_SET_VALUE (symbolP, 0); | ||||
1487 | symbol_set_frag (symbolP, &zero_address_frag); | ||||
1488 | S_CLEAR_VOLATILE (symbolP); | ||||
1489 | } | ||||
1490 | |||||
1491 | size = S_GET_VALUE (symbolP); | ||||
1492 | if (size == 0) | ||||
1493 | size = temp; | ||||
1494 | else if (size != temp) | ||||
1495 | as_warn (_("size of \"%s\" is already %ld; not changing to %ld")("size of \"%s\" is already %ld; not changing to %ld"), | ||||
1496 | name, (long) size, (long) temp); | ||||
1497 | |||||
1498 | *p = c; | ||||
1499 | if (comm_parse_extra != NULL((void*)0)) | ||||
1500 | symbolP = (*comm_parse_extra) (param, symbolP, size); | ||||
1501 | else | ||||
1502 | { | ||||
1503 | S_SET_VALUE (symbolP, (valueT) size); | ||||
1504 | S_SET_EXTERNAL (symbolP); | ||||
1505 | S_SET_SEGMENT (symbolP, bfd_com_section_ptr((asection *) &bfd_com_section)); | ||||
1506 | #ifdef OBJ_VMS | ||||
1507 | { | ||||
1508 | extern int flag_one; | ||||
1509 | if (size == 0 || !flag_one) | ||||
1510 | S_GET_OTHER (symbolP)(elf_s_get_other (symbolP)) = const_flag; | ||||
1511 | } | ||||
1512 | #endif | ||||
1513 | } | ||||
1514 | |||||
1515 | demand_empty_rest_of_line (); | ||||
1516 | out: | ||||
1517 | if (flag_mri) | ||||
1518 | mri_comment_end (stop, stopc); | ||||
1519 | return symbolP; | ||||
1520 | } | ||||
1521 | |||||
1522 | void | ||||
1523 | s_comm (int ignore) | ||||
1524 | { | ||||
1525 | s_comm_internal (ignore, NULL((void*)0)); | ||||
1526 | } | ||||
1527 | |||||
1528 | /* The MRI COMMON pseudo-op. We handle this by creating a common | ||||
1529 | symbol with the appropriate name. We make s_space do the right | ||||
1530 | thing by increasing the size. */ | ||||
1531 | |||||
1532 | void | ||||
1533 | s_mri_common (int small ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
1534 | { | ||||
1535 | char *name; | ||||
1536 | char c; | ||||
1537 | char *alc = NULL((void*)0); | ||||
1538 | symbolS *sym; | ||||
1539 | offsetT align; | ||||
1540 | char *stop = NULL((void*)0); | ||||
1541 | char stopc; | ||||
1542 | |||||
1543 | if (!flag_mri) | ||||
1544 | { | ||||
1545 | s_comm (0); | ||||
1546 | return; | ||||
1547 | } | ||||
1548 | |||||
1549 | stop = mri_comment_field (&stopc); | ||||
1550 | |||||
1551 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
1552 | |||||
1553 | name = input_line_pointer; | ||||
1554 | if (!ISDIGIT (*name)(_sch_istable[(*name) & 0xff] & (unsigned short)(_sch_isdigit ))) | ||||
1555 | c = get_symbol_end (); | ||||
1556 | else | ||||
1557 | { | ||||
1558 | do | ||||
1559 | { | ||||
1560 | ++input_line_pointer; | ||||
1561 | } | ||||
1562 | while (ISDIGIT (*input_line_pointer)(_sch_istable[(*input_line_pointer) & 0xff] & (unsigned short)(_sch_isdigit))); | ||||
1563 | |||||
1564 | c = *input_line_pointer; | ||||
1565 | *input_line_pointer = '\0'; | ||||
1566 | |||||
1567 | if (line_label != NULL((void*)0)) | ||||
1568 | { | ||||
1569 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | ||||
1570 | + (input_line_pointer - name) | ||||
1571 | + 1); | ||||
1572 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | ||||
1573 | name = alc; | ||||
1574 | } | ||||
1575 | } | ||||
1576 | |||||
1577 | sym = symbol_find_or_make (name); | ||||
1578 | *input_line_pointer = c; | ||||
1579 | if (alc != NULL((void*)0)) | ||||
1580 | free (alc); | ||||
1581 | |||||
1582 | if (*input_line_pointer != ',') | ||||
1583 | align = 0; | ||||
1584 | else | ||||
1585 | { | ||||
1586 | ++input_line_pointer; | ||||
1587 | align = get_absolute_expression (); | ||||
1588 | } | ||||
1589 | |||||
1590 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) | ||||
1591 | { | ||||
1592 | as_bad (_("symbol `%s' is already defined")("symbol `%s' is already defined"), S_GET_NAME (sym)); | ||||
1593 | ignore_rest_of_line (); | ||||
1594 | mri_comment_end (stop, stopc); | ||||
1595 | return; | ||||
1596 | } | ||||
1597 | |||||
1598 | S_SET_EXTERNAL (sym); | ||||
1599 | S_SET_SEGMENT (sym, bfd_com_section_ptr((asection *) &bfd_com_section)); | ||||
1600 | mri_common_symbol = sym; | ||||
1601 | |||||
1602 | #ifdef S_SET_ALIGN | ||||
1603 | if (align != 0) | ||||
1604 | S_SET_ALIGN (sym, align)(((elf_symbol_type *) (&(symbol_get_bfdsym (sym))->the_bfd ))->internal_elf_sym.st_value = (align)); | ||||
1605 | #endif | ||||
1606 | |||||
1607 | if (line_label != NULL((void*)0)) | ||||
1608 | { | ||||
1609 | expressionS exp; | ||||
1610 | exp.X_op = O_symbol; | ||||
1611 | exp.X_add_symbol = sym; | ||||
1612 | exp.X_add_number = 0; | ||||
1613 | symbol_set_value_expression (line_label, &exp); | ||||
1614 | symbol_set_frag (line_label, &zero_address_frag); | ||||
1615 | S_SET_SEGMENT (line_label, expr_section); | ||||
1616 | } | ||||
1617 | |||||
1618 | /* FIXME: We just ignore the small argument, which distinguishes | ||||
1619 | COMMON and COMMON.S. I don't know what we can do about it. */ | ||||
1620 | |||||
1621 | /* Ignore the type and hptype. */ | ||||
1622 | if (*input_line_pointer == ',') | ||||
1623 | input_line_pointer += 2; | ||||
1624 | if (*input_line_pointer == ',') | ||||
1625 | input_line_pointer += 2; | ||||
1626 | |||||
1627 | demand_empty_rest_of_line (); | ||||
1628 | |||||
1629 | mri_comment_end (stop, stopc); | ||||
1630 | } | ||||
1631 | |||||
1632 | void | ||||
1633 | s_data (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
1634 | { | ||||
1635 | segT section; | ||||
1636 | register int temp; | ||||
1637 | |||||
1638 | temp = get_absolute_expression (); | ||||
1639 | if (flag_readonly_data_in_text) | ||||
1640 | { | ||||
1641 | section = text_section; | ||||
1642 | temp += 1000; | ||||
1643 | } | ||||
1644 | else | ||||
1645 | section = data_section; | ||||
1646 | |||||
1647 | subseg_set (section, (subsegT) temp); | ||||
1648 | |||||
1649 | #ifdef OBJ_VMS | ||||
1650 | const_flag = 0; | ||||
1651 | #endif | ||||
1652 | demand_empty_rest_of_line (); | ||||
1653 | } | ||||
1654 | |||||
1655 | /* Handle the .appfile pseudo-op. This is automatically generated by | ||||
1656 | do_scrub_chars when a preprocessor # line comment is seen with a | ||||
1657 | file name. This default definition may be overridden by the object | ||||
1658 | or CPU specific pseudo-ops. This function is also the default | ||||
1659 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | ||||
1660 | .file. */ | ||||
1661 | |||||
1662 | void | ||||
1663 | s_app_file_string (char *file, int appfile ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
1664 | { | ||||
1665 | #ifdef LISTING | ||||
1666 | if (listing) | ||||
1667 | listing_source_file (file); | ||||
1668 | #endif | ||||
1669 | register_dependency (file); | ||||
1670 | #ifdef obj_app_fileelf_file_symbol | ||||
1671 | obj_app_fileelf_file_symbol (file, appfile); | ||||
1672 | #endif | ||||
1673 | } | ||||
1674 | |||||
1675 | void | ||||
1676 | s_app_file (int appfile) | ||||
1677 | { | ||||
1678 | register char *s; | ||||
1679 | int length; | ||||
1680 | |||||
1681 | /* Some assemblers tolerate immediately following '"'. */ | ||||
1682 | if ((s = demand_copy_string (&length)) != 0) | ||||
1683 | { | ||||
1684 | /* If this is a fake .appfile, a fake newline was inserted into | ||||
1685 | the buffer. Passing -2 to new_logical_line tells it to | ||||
1686 | account for it. */ | ||||
1687 | int may_omit | ||||
1688 | = (!new_logical_line (s, appfile ? -2 : -1) && appfile); | ||||
1689 | |||||
1690 | /* In MRI mode, the preprocessor may have inserted an extraneous | ||||
1691 | backquote. */ | ||||
1692 | if (flag_m68k_mri0 | ||||
1693 | && *input_line_pointer == '\'' | ||||
1694 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | ||||
1695 | ++input_line_pointer; | ||||
1696 | |||||
1697 | demand_empty_rest_of_line (); | ||||
1698 | if (!may_omit) | ||||
1699 | s_app_file_string (s, appfile); | ||||
1700 | } | ||||
1701 | } | ||||
1702 | |||||
1703 | /* Handle the .appline pseudo-op. This is automatically generated by | ||||
1704 | do_scrub_chars when a preprocessor # line comment is seen. This | ||||
1705 | default definition may be overridden by the object or CPU specific | ||||
1706 | pseudo-ops. */ | ||||
1707 | |||||
1708 | void | ||||
1709 | s_app_line (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
1710 | { | ||||
1711 | int l; | ||||
1712 | |||||
1713 | /* The given number is that of the next line. */ | ||||
1714 | l = get_absolute_expression () - 1; | ||||
1715 | |||||
1716 | if (l < -1) | ||||
1717 | /* Some of the back ends can't deal with non-positive line numbers. | ||||
1718 | Besides, it's silly. GCC however will generate a line number of | ||||
1719 | zero when it is pre-processing builtins for assembler-with-cpp files: | ||||
1720 | |||||
1721 | # 0 "<built-in>" | ||||
1722 | |||||
1723 | We do not want to barf on this, especially since such files are used | ||||
1724 | in the GCC and GDB testsuites. So we check for negative line numbers | ||||
1725 | rather than non-positive line numbers. */ | ||||
1726 | as_warn (_("line numbers must be positive; line number %d rejected")("line numbers must be positive; line number %d rejected"), | ||||
1727 | l + 1); | ||||
1728 | else | ||||
1729 | { | ||||
1730 | new_logical_line ((char *) NULL((void*)0), l); | ||||
1731 | #ifdef LISTING | ||||
1732 | if (listing) | ||||
1733 | listing_source_line (l); | ||||
1734 | #endif | ||||
1735 | } | ||||
1736 | demand_empty_rest_of_line (); | ||||
1737 | } | ||||
1738 | |||||
1739 | /* Handle the .end pseudo-op. Actually, the real work is done in | ||||
1740 | read_a_source_file. */ | ||||
1741 | |||||
1742 | void | ||||
1743 | s_end (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
1744 | { | ||||
1745 | if (flag_mri) | ||||
1746 | { | ||||
1747 | /* The MRI assembler permits the start symbol to follow .end, | ||||
1748 | but we don't support that. */ | ||||
1749 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
1750 | if (!is_end_of_line[(unsigned char) *input_line_pointer] | ||||
1751 | && *input_line_pointer != '*' | ||||
1752 | && *input_line_pointer != '!') | ||||
1753 | as_warn (_("start address not supported")("start address not supported")); | ||||
1754 | } | ||||
1755 | } | ||||
1756 | |||||
1757 | /* Handle the .err pseudo-op. */ | ||||
1758 | |||||
1759 | void | ||||
1760 | s_err (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
1761 | { | ||||
1762 | as_bad (_(".err encountered")(".err encountered")); | ||||
1763 | demand_empty_rest_of_line (); | ||||
1764 | } | ||||
1765 | |||||
1766 | /* Handle the .error and .warning pseudo-ops. */ | ||||
1767 | |||||
1768 | void | ||||
1769 | s_errwarn (int err) | ||||
1770 | { | ||||
1771 | int len; | ||||
1772 | /* The purpose for the conditional assignment is not to | ||||
1773 | internationalize the directive itself, but that we need a | ||||
1774 | self-contained message, one that can be passed like the | ||||
1775 | demand_copy_C_string return value, and with no assumption on the | ||||
1776 | location of the name of the directive within the message. */ | ||||
1777 | char *msg | ||||
1778 | = (err ? _(".error directive invoked in source file")(".error directive invoked in source file") | ||||
1779 | : _(".warning directive invoked in source file")(".warning directive invoked in source file")); | ||||
1780 | |||||
1781 | if (!is_it_end_of_statement ()) | ||||
1782 | { | ||||
1783 | if (*input_line_pointer != '\"') | ||||
1784 | { | ||||
1785 | as_bad (_("%s argument must be a string")("%s argument must be a string"), | ||||
1786 | err ? ".error" : ".warning"); | ||||
1787 | ignore_rest_of_line (); | ||||
1788 | return; | ||||
1789 | } | ||||
1790 | |||||
1791 | msg = demand_copy_C_string (&len); | ||||
1792 | if (msg == NULL((void*)0)) | ||||
1793 | return; | ||||
1794 | } | ||||
1795 | |||||
1796 | if (err) | ||||
1797 | as_bad ("%s", msg); | ||||
1798 | else | ||||
1799 | as_warn ("%s", msg); | ||||
1800 | demand_empty_rest_of_line (); | ||||
1801 | } | ||||
1802 | |||||
1803 | /* Handle the MRI fail pseudo-op. */ | ||||
1804 | |||||
1805 | void | ||||
1806 | s_fail (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
1807 | { | ||||
1808 | offsetT temp; | ||||
1809 | char *stop = NULL((void*)0); | ||||
1810 | char stopc; | ||||
1811 | |||||
1812 | if (flag_mri) | ||||
1813 | stop = mri_comment_field (&stopc); | ||||
1814 | |||||
1815 | temp = get_absolute_expression (); | ||||
1816 | if (temp >= 500) | ||||
1817 | as_warn (_(".fail %ld encountered")(".fail %ld encountered"), (long) temp); | ||||
1818 | else | ||||
1819 | as_bad (_(".fail %ld encountered")(".fail %ld encountered"), (long) temp); | ||||
1820 | |||||
1821 | demand_empty_rest_of_line (); | ||||
1822 | |||||
1823 | if (flag_mri) | ||||
1824 | mri_comment_end (stop, stopc); | ||||
1825 | } | ||||
1826 | |||||
1827 | void | ||||
1828 | s_fill (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
1829 | { | ||||
1830 | expressionS rep_exp; | ||||
1831 | long size = 1; | ||||
1832 | register long fill = 0; | ||||
1833 | char *p; | ||||
1834 | |||||
1835 | #ifdef md_flush_pending_output | ||||
1836 | md_flush_pending_output (); | ||||
1837 | #endif | ||||
1838 | |||||
1839 | get_known_segmented_expression (&rep_exp); | ||||
1840 | if (*input_line_pointer == ',') | ||||
1841 | { | ||||
1842 | input_line_pointer++; | ||||
1843 | size = get_absolute_expression (); | ||||
1844 | if (*input_line_pointer == ',') | ||||
1845 | { | ||||
1846 | input_line_pointer++; | ||||
1847 | fill = get_absolute_expression (); | ||||
1848 | } | ||||
1849 | } | ||||
1850 | |||||
1851 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | ||||
1852 | #define BSD_FILL_SIZE_CROCK_8(8) (8) | ||||
1853 | if (size > BSD_FILL_SIZE_CROCK_8(8)) | ||||
1854 | { | ||||
1855 | as_warn (_(".fill size clamped to %d")(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8(8)); | ||||
1856 | size = BSD_FILL_SIZE_CROCK_8(8); | ||||
1857 | } | ||||
1858 | if (size < 0) | ||||
1859 | { | ||||
1860 | as_warn (_("size negative; .fill ignored")("size negative; .fill ignored")); | ||||
1861 | size = 0; | ||||
1862 | } | ||||
1863 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | ||||
1864 | { | ||||
1865 | if (rep_exp.X_add_number < 0) | ||||
1866 | as_warn (_("repeat < 0; .fill ignored")("repeat < 0; .fill ignored")); | ||||
1867 | size = 0; | ||||
1868 | } | ||||
1869 | |||||
1870 | if (size && !need_pass_2) | ||||
1871 | { | ||||
1872 | if (rep_exp.X_op == O_constant) | ||||
1873 | { | ||||
1874 | p = frag_var (rs_fill, (int) size, (int) size, | ||||
1875 | (relax_substateT) 0, (symbolS *) 0, | ||||
1876 | (offsetT) rep_exp.X_add_number, | ||||
1877 | (char *) 0); | ||||
1878 | } | ||||
1879 | else | ||||
1880 | { | ||||
1881 | /* We don't have a constant repeat count, so we can't use | ||||
1882 | rs_fill. We can get the same results out of rs_space, | ||||
1883 | but its argument is in bytes, so we must multiply the | ||||
1884 | repeat count by size. */ | ||||
1885 | |||||
1886 | symbolS *rep_sym; | ||||
1887 | rep_sym = make_expr_symbol (&rep_exp); | ||||
1888 | if (size != 1) | ||||
1889 | { | ||||
1890 | expressionS size_exp; | ||||
1891 | size_exp.X_op = O_constant; | ||||
1892 | size_exp.X_add_number = size; | ||||
1893 | |||||
1894 | rep_exp.X_op = O_multiply; | ||||
1895 | rep_exp.X_add_symbol = rep_sym; | ||||
1896 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | ||||
1897 | rep_exp.X_add_number = 0; | ||||
1898 | rep_sym = make_expr_symbol (&rep_exp); | ||||
1899 | } | ||||
1900 | |||||
1901 | p = frag_var (rs_space, (int) size, (int) size, | ||||
1902 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | ||||
1903 | } | ||||
1904 | |||||
1905 | memset (p, 0, (unsigned int) size); | ||||
1906 | |||||
1907 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX | ||||
1908 | flavoured AS. The following bizarre behaviour is to be | ||||
1909 | compatible with above. I guess they tried to take up to 8 | ||||
1910 | bytes from a 4-byte expression and they forgot to sign | ||||
1911 | extend. */ | ||||
1912 | #define BSD_FILL_SIZE_CROCK_4(4) (4) | ||||
1913 | md_number_to_charsnumber_to_chars_littleendian (p, (valueT) fill, | ||||
1914 | (size > BSD_FILL_SIZE_CROCK_4(4) | ||||
1915 | ? BSD_FILL_SIZE_CROCK_4(4) | ||||
1916 | : (int) size)); | ||||
1917 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | ||||
1918 | but emits no error message because it seems a legal thing to do. | ||||
1919 | It is a degenerate case of .fill but could be emitted by a | ||||
1920 | compiler. */ | ||||
1921 | } | ||||
1922 | demand_empty_rest_of_line (); | ||||
1923 | } | ||||
1924 | |||||
1925 | void | ||||
1926 | s_globl (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
1927 | { | ||||
1928 | char *name; | ||||
1929 | int c; | ||||
1930 | symbolS *symbolP; | ||||
1931 | char *stop = NULL((void*)0); | ||||
1932 | char stopc; | ||||
1933 | |||||
1934 | if (flag_mri) | ||||
1935 | stop = mri_comment_field (&stopc); | ||||
1936 | |||||
1937 | do | ||||
1938 | { | ||||
1939 | name = input_line_pointer; | ||||
1940 | c = get_symbol_end (); | ||||
1941 | symbolP = symbol_find_or_make (name); | ||||
1942 | S_SET_EXTERNAL (symbolP); | ||||
1943 | |||||
1944 | *input_line_pointer = c; | ||||
1945 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
1946 | c = *input_line_pointer; | ||||
1947 | if (c == ',') | ||||
1948 | { | ||||
1949 | input_line_pointer++; | ||||
1950 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
1951 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | ||||
1952 | c = '\n'; | ||||
1953 | } | ||||
1954 | } | ||||
1955 | while (c == ','); | ||||
1956 | |||||
1957 | demand_empty_rest_of_line (); | ||||
1958 | |||||
1959 | if (flag_mri) | ||||
1960 | mri_comment_end (stop, stopc); | ||||
1961 | } | ||||
1962 | |||||
1963 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | ||||
1964 | |||||
1965 | void | ||||
1966 | s_irp (int irpc) | ||||
1967 | { | ||||
1968 | char *file, *eol; | ||||
1969 | unsigned int line; | ||||
1970 | sb s; | ||||
1971 | const char *err; | ||||
1972 | sb out; | ||||
1973 | |||||
1974 | as_where (&file, &line); | ||||
1975 | |||||
1976 | sb_new (&s); | ||||
1977 | eol = find_end_of_line (input_line_pointer, 0); | ||||
1978 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | ||||
1979 | input_line_pointer = eol; | ||||
1980 | |||||
1981 | sb_new (&out); | ||||
1982 | |||||
1983 | err = expand_irp (irpc, 0, &s, &out, get_line_sb); | ||||
1984 | if (err != NULL((void*)0)) | ||||
1985 | as_bad_where (file, line, "%s", err); | ||||
1986 | |||||
1987 | sb_kill (&s); | ||||
1988 | |||||
1989 | input_scrub_include_sb (&out, input_line_pointer, 1); | ||||
1990 | sb_kill (&out); | ||||
1991 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | ||||
1992 | } | ||||
1993 | |||||
1994 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | ||||
1995 | the section to only be linked once. However, this is not supported | ||||
1996 | by most object file formats. This takes an optional argument, | ||||
1997 | which is what to do about duplicates. */ | ||||
1998 | |||||
1999 | void | ||||
2000 | s_linkonce (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
2001 | { | ||||
2002 | enum linkonce_type type; | ||||
2003 | |||||
2004 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2005 | |||||
2006 | type = LINKONCE_DISCARD; | ||||
2007 | |||||
2008 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) | ||||
2009 | { | ||||
2010 | char *s; | ||||
2011 | char c; | ||||
2012 | |||||
2013 | s = input_line_pointer; | ||||
2014 | c = get_symbol_end (); | ||||
2015 | if (strcasecmp (s, "discard") == 0) | ||||
2016 | type = LINKONCE_DISCARD; | ||||
2017 | else if (strcasecmp (s, "one_only") == 0) | ||||
2018 | type = LINKONCE_ONE_ONLY; | ||||
2019 | else if (strcasecmp (s, "same_size") == 0) | ||||
2020 | type = LINKONCE_SAME_SIZE; | ||||
2021 | else if (strcasecmp (s, "same_contents") == 0) | ||||
2022 | type = LINKONCE_SAME_CONTENTS; | ||||
2023 | else | ||||
2024 | as_warn (_("unrecognized .linkonce type `%s'")("unrecognized .linkonce type `%s'"), s); | ||||
2025 | |||||
2026 | *input_line_pointer = c; | ||||
2027 | } | ||||
2028 | |||||
2029 | #ifdef obj_handle_link_once | ||||
2030 | obj_handle_link_once (type); | ||||
2031 | #else /* ! defined (obj_handle_link_once) */ | ||||
2032 | { | ||||
2033 | flagword flags; | ||||
2034 | |||||
2035 | if ((bfd_applicable_section_flags (stdoutput)((stdoutput)->xvec->section_flags) & SEC_LINK_ONCE0x20000) == 0) | ||||
2036 | as_warn (_(".linkonce is not supported for this object file format")(".linkonce is not supported for this object file format")); | ||||
2037 | |||||
2038 | flags = bfd_get_section_flags (stdoutput, now_seg)((now_seg)->flags + 0); | ||||
2039 | flags |= SEC_LINK_ONCE0x20000; | ||||
2040 | switch (type) | ||||
2041 | { | ||||
2042 | default: | ||||
2043 | abort ()as_abort ("/usr/src/gnu/usr.bin/binutils-2.17/gas/read.c", 2043 , __PRETTY_FUNCTION__); | ||||
2044 | case LINKONCE_DISCARD: | ||||
2045 | flags |= SEC_LINK_DUPLICATES_DISCARD0x0; | ||||
2046 | break; | ||||
2047 | case LINKONCE_ONE_ONLY: | ||||
2048 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY0x80000; | ||||
2049 | break; | ||||
2050 | case LINKONCE_SAME_SIZE: | ||||
2051 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE0x100000; | ||||
2052 | break; | ||||
2053 | case LINKONCE_SAME_CONTENTS: | ||||
2054 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS(0x80000 | 0x100000); | ||||
2055 | break; | ||||
2056 | } | ||||
2057 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) | ||||
2058 | as_bad (_("bfd_set_section_flags: %s")("bfd_set_section_flags: %s"), | ||||
2059 | bfd_errmsg (bfd_get_error ())); | ||||
2060 | } | ||||
2061 | #endif /* ! defined (obj_handle_link_once) */ | ||||
2062 | |||||
2063 | demand_empty_rest_of_line (); | ||||
2064 | } | ||||
2065 | |||||
2066 | void | ||||
2067 | bss_alloc (symbolS *symbolP, addressT size, int align) | ||||
2068 | { | ||||
2069 | char *pfrag; | ||||
2070 | segT current_seg = now_seg; | ||||
2071 | subsegT current_subseg = now_subseg; | ||||
2072 | segT bss_seg = bss_section; | ||||
2073 | |||||
2074 | #if defined (TC_MIPS) || defined (TC_ALPHA) | ||||
2075 | if (OUTPUT_FLAVORbfd_target_elf_flavour == bfd_target_ecoff_flavour | ||||
2076 | || OUTPUT_FLAVORbfd_target_elf_flavour == bfd_target_elf_flavour) | ||||
2077 | { | ||||
2078 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | ||||
2079 | if (size <= bfd_get_gp_size (stdoutput)) | ||||
2080 | { | ||||
2081 | bss_seg = subseg_new (".sbss", 1); | ||||
2082 | seg_info (bss_seg)->bss = 1; | ||||
2083 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC0x001)) | ||||
2084 | as_warn (_("error setting flags for \".sbss\": %s")("error setting flags for \".sbss\": %s"), | ||||
2085 | bfd_errmsg (bfd_get_error ())); | ||||
2086 | } | ||||
2087 | } | ||||
2088 | #endif | ||||
2089 | subseg_set (bss_seg, 1); | ||||
2090 | |||||
2091 | if (align) | ||||
2092 | { | ||||
2093 | record_alignment (bss_seg, align); | ||||
2094 | frag_align (align, 0, 0); | ||||
2095 | } | ||||
2096 | |||||
2097 | /* Detach from old frag. */ | ||||
2098 | if (S_GET_SEGMENT (symbolP) == bss_seg) | ||||
2099 | symbol_get_frag (symbolP)->fr_symbol = NULL((void*)0); | ||||
2100 | |||||
2101 | symbol_set_frag (symbolP, frag_now); | ||||
2102 | pfrag = frag_var (rs_org, 1, 1, 0, symbolP, size, NULL((void*)0)); | ||||
2103 | *pfrag = 0; | ||||
2104 | |||||
2105 | #ifdef S_SET_SIZE | ||||
2106 | S_SET_SIZE (symbolP, size)(((elf_symbol_type *) (&(symbol_get_bfdsym (symbolP))-> the_bfd))->internal_elf_sym.st_size = (size)); | ||||
2107 | #endif | ||||
2108 | S_SET_SEGMENT (symbolP, bss_seg); | ||||
2109 | |||||
2110 | #ifdef OBJ_COFF | ||||
2111 | /* The symbol may already have been created with a preceding | ||||
2112 | ".globl" directive -- be careful not to step on storage class | ||||
2113 | in that case. Otherwise, set it to static. */ | ||||
2114 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) | ||||
2115 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | ||||
2116 | #endif /* OBJ_COFF */ | ||||
2117 | |||||
2118 | subseg_set (current_seg, current_subseg); | ||||
2119 | } | ||||
2120 | |||||
2121 | offsetT | ||||
2122 | parse_align (int align_bytes) | ||||
2123 | { | ||||
2124 | expressionS exp; | ||||
2125 | addressT align; | ||||
2126 | |||||
2127 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2128 | if (*input_line_pointer != ',') | ||||
2129 | { | ||||
2130 | no_align: | ||||
2131 | as_bad (_("expected alignment after size")("expected alignment after size")); | ||||
2132 | ignore_rest_of_line (); | ||||
2133 | return -1; | ||||
2134 | } | ||||
2135 | |||||
2136 | input_line_pointer++; | ||||
2137 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2138 | |||||
2139 | align = get_absolute_expr (&exp); | ||||
2140 | if (exp.X_op == O_absent) | ||||
2141 | goto no_align; | ||||
2142 | |||||
2143 | if (!exp.X_unsigned) | ||||
2144 | { | ||||
2145 | as_warn (_("alignment negative; 0 assumed")("alignment negative; 0 assumed")); | ||||
2146 | align = 0; | ||||
2147 | } | ||||
2148 | |||||
2149 | if (align_bytes && align != 0) | ||||
2150 | { | ||||
2151 | /* convert to a power of 2 alignment */ | ||||
2152 | unsigned int alignp2 = 0; | ||||
2153 | while ((align & 1) == 0) | ||||
2154 | align >>= 1, ++alignp2; | ||||
2155 | if (align != 1) | ||||
2156 | { | ||||
2157 | as_bad (_("alignment not a power of 2")("alignment not a power of 2")); | ||||
2158 | ignore_rest_of_line (); | ||||
2159 | return -1; | ||||
2160 | } | ||||
2161 | align = alignp2; | ||||
2162 | } | ||||
2163 | return align; | ||||
2164 | } | ||||
2165 | |||||
2166 | /* Called from s_comm_internal after symbol name and size have been | ||||
2167 | parsed. NEEDS_ALIGN is 0 if it was an ".lcomm" (2 args only), | ||||
2168 | 1 if this was a ".bss" directive which has a 3rd argument | ||||
2169 | (alignment as a power of 2), or 2 if this was a ".bss" directive | ||||
2170 | with alignment in bytes. */ | ||||
2171 | |||||
2172 | symbolS * | ||||
2173 | s_lcomm_internal (int needs_align, symbolS *symbolP, addressT size) | ||||
2174 | { | ||||
2175 | addressT align = 0; | ||||
2176 | |||||
2177 | if (needs_align) | ||||
2178 | { | ||||
2179 | align = parse_align (needs_align - 1); | ||||
2180 | if (align == (addressT) -1) | ||||
2181 | return NULL((void*)0); | ||||
2182 | } | ||||
2183 | else | ||||
2184 | /* Assume some objects may require alignment on some systems. */ | ||||
2185 | TC_IMPLICIT_LCOMM_ALIGNMENT (size, align)do { if ((size) >= 8) (align) = 3; else if ((size) >= 4 ) (align) = 2; else if ((size) >= 2) (align) = 1; else (align ) = 0; } while (0); | ||||
2186 | |||||
2187 | bss_alloc (symbolP, size, align); | ||||
2188 | return symbolP; | ||||
2189 | } | ||||
2190 | |||||
2191 | void | ||||
2192 | s_lcomm (int needs_align) | ||||
2193 | { | ||||
2194 | s_comm_internal (needs_align, s_lcomm_internal); | ||||
2195 | } | ||||
2196 | |||||
2197 | void | ||||
2198 | s_lcomm_bytes (int needs_align) | ||||
2199 | { | ||||
2200 | s_comm_internal (needs_align * 2, s_lcomm_internal); | ||||
2201 | } | ||||
2202 | |||||
2203 | void | ||||
2204 | s_lsym (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
2205 | { | ||||
2206 | register char *name; | ||||
2207 | register char c; | ||||
2208 | register char *p; | ||||
2209 | expressionS exp; | ||||
2210 | register symbolS *symbolP; | ||||
2211 | |||||
2212 | /* We permit ANY defined expression: BSD4.2 demands constants. */ | ||||
2213 | name = input_line_pointer; | ||||
2214 | c = get_symbol_end (); | ||||
2215 | p = input_line_pointer; | ||||
2216 | *p = c; | ||||
2217 | |||||
2218 | if (name == p) | ||||
2219 | { | ||||
2220 | as_bad (_("expected symbol name")("expected symbol name")); | ||||
2221 | ignore_rest_of_line (); | ||||
2222 | return; | ||||
2223 | } | ||||
2224 | |||||
2225 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2226 | |||||
2227 | if (*input_line_pointer != ',') | ||||
2228 | { | ||||
2229 | *p = 0; | ||||
2230 | as_bad (_("expected comma after \"%s\"")("expected comma after \"%s\""), name); | ||||
2231 | *p = c; | ||||
2232 | ignore_rest_of_line (); | ||||
2233 | return; | ||||
2234 | } | ||||
2235 | |||||
2236 | input_line_pointer++; | ||||
2237 | expression_and_evaluate (&exp)expr (0, &exp, expr_evaluate); | ||||
2238 | |||||
2239 | if (exp.X_op != O_constant | ||||
2240 | && exp.X_op != O_register) | ||||
2241 | { | ||||
2242 | as_bad (_("bad expression")("bad expression")); | ||||
2243 | ignore_rest_of_line (); | ||||
2244 | return; | ||||
2245 | } | ||||
2246 | |||||
2247 | *p = 0; | ||||
2248 | symbolP = symbol_find_or_make (name); | ||||
2249 | |||||
2250 | if (S_GET_SEGMENT (symbolP) == undefined_section((asection *) &bfd_und_section)) | ||||
2251 | { | ||||
2252 | /* The name might be an undefined .global symbol; be sure to | ||||
2253 | keep the "external" bit. */ | ||||
2254 | S_SET_SEGMENT (symbolP, | ||||
2255 | (exp.X_op == O_constant | ||||
2256 | ? absolute_section((asection *) &bfd_abs_section) | ||||
2257 | : reg_section)); | ||||
2258 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | ||||
2259 | } | ||||
2260 | else | ||||
2261 | { | ||||
2262 | as_bad (_("symbol `%s' is already defined")("symbol `%s' is already defined"), name); | ||||
2263 | } | ||||
2264 | |||||
2265 | *p = c; | ||||
2266 | demand_empty_rest_of_line (); | ||||
2267 | } | ||||
2268 | |||||
2269 | /* Read a line into an sb. Returns the character that ended the line | ||||
2270 | or zero if there are no more lines. */ | ||||
2271 | |||||
2272 | static int | ||||
2273 | get_line_sb (sb *line) | ||||
2274 | { | ||||
2275 | char *eol; | ||||
2276 | |||||
2277 | if (input_line_pointer[-1] == '\n') | ||||
2278 | bump_line_counters (); | ||||
2279 | |||||
2280 | if (input_line_pointer >= buffer_limit) | ||||
2281 | { | ||||
2282 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | ||||
2283 | if (buffer_limit == 0) | ||||
2284 | return 0; | ||||
2285 | } | ||||
2286 | |||||
2287 | eol = find_end_of_line (input_line_pointer, flag_m68k_mri0); | ||||
2288 | sb_add_buffer (line, input_line_pointer, eol - input_line_pointer); | ||||
2289 | input_line_pointer = eol; | ||||
2290 | |||||
2291 | /* Don't skip multiple end-of-line characters, because that breaks support | ||||
2292 | for the IA-64 stop bit (;;) which looks like two consecutive end-of-line | ||||
2293 | characters but isn't. Instead just skip one end of line character and | ||||
2294 | return the character skipped so that the caller can re-insert it if | ||||
2295 | necessary. */ | ||||
2296 | return *input_line_pointer++; | ||||
2297 | } | ||||
2298 | |||||
2299 | /* Define a macro. This is an interface to macro.c. */ | ||||
2300 | |||||
2301 | void | ||||
2302 | s_macro (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
2303 | { | ||||
2304 | char *file, *eol; | ||||
2305 | unsigned int line; | ||||
2306 | sb s; | ||||
2307 | const char *err; | ||||
2308 | const char *name; | ||||
2309 | |||||
2310 | as_where (&file, &line); | ||||
2311 | |||||
2312 | sb_new (&s); | ||||
2313 | eol = find_end_of_line (input_line_pointer, 0); | ||||
2314 | sb_add_buffer (&s, input_line_pointer, eol - input_line_pointer); | ||||
2315 | input_line_pointer = eol; | ||||
2316 | |||||
2317 | if (line_label != NULL((void*)0)) | ||||
2318 | { | ||||
2319 | sb label; | ||||
2320 | |||||
2321 | sb_new (&label); | ||||
2322 | sb_add_string (&label, S_GET_NAME (line_label)); | ||||
2323 | err = define_macro (0, &s, &label, get_line_sb, file, line, &name); | ||||
2324 | sb_kill (&label); | ||||
2325 | } | ||||
2326 | else | ||||
2327 | err = define_macro (0, &s, NULL((void*)0), get_line_sb, file, line, &name); | ||||
2328 | if (err != NULL((void*)0)) | ||||
2329 | as_bad_where (file, line, err, name); | ||||
2330 | else | ||||
2331 | { | ||||
2332 | if (line_label != NULL((void*)0)) | ||||
2333 | { | ||||
2334 | S_SET_SEGMENT (line_label, absolute_section((asection *) &bfd_abs_section)); | ||||
2335 | S_SET_VALUE (line_label, 0); | ||||
2336 | symbol_set_frag (line_label, &zero_address_frag); | ||||
2337 | } | ||||
2338 | |||||
2339 | if (((NO_PSEUDO_DOT0 || flag_m68k_mri0) | ||||
2340 | && hash_find (po_hash, name) != NULL((void*)0)) | ||||
2341 | || (!flag_m68k_mri0 | ||||
2342 | && *name == '.' | ||||
2343 | && hash_find (po_hash, name + 1) != NULL((void*)0))) | ||||
2344 | as_warn_where (file, | ||||
2345 | line, | ||||
2346 | _("attempt to redefine pseudo-op `%s' ignored")("attempt to redefine pseudo-op `%s' ignored"), | ||||
2347 | name); | ||||
2348 | } | ||||
2349 | |||||
2350 | sb_kill (&s); | ||||
2351 | } | ||||
2352 | |||||
2353 | /* Handle the .mexit pseudo-op, which immediately exits a macro | ||||
2354 | expansion. */ | ||||
2355 | |||||
2356 | void | ||||
2357 | s_mexit (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
2358 | { | ||||
2359 | cond_exit_macro (macro_nest); | ||||
2360 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | ||||
2361 | } | ||||
2362 | |||||
2363 | /* Switch in and out of MRI mode. */ | ||||
2364 | |||||
2365 | void | ||||
2366 | s_mri (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
2367 | { | ||||
2368 | int on, old_flag; | ||||
2369 | |||||
2370 | on = get_absolute_expression (); | ||||
2371 | old_flag = flag_mri; | ||||
2372 | if (on != 0) | ||||
2373 | { | ||||
2374 | flag_mri = 1; | ||||
2375 | #ifdef TC_M68K | ||||
2376 | flag_m68k_mri0 = 1; | ||||
2377 | #endif | ||||
2378 | macro_mri_mode (1); | ||||
2379 | } | ||||
2380 | else | ||||
2381 | { | ||||
2382 | flag_mri = 0; | ||||
2383 | #ifdef TC_M68K | ||||
2384 | flag_m68k_mri0 = 0; | ||||
2385 | #endif | ||||
2386 | macro_mri_mode (0); | ||||
2387 | } | ||||
2388 | |||||
2389 | /* Operator precedence changes in m68k MRI mode, so we need to | ||||
2390 | update the operator rankings. */ | ||||
2391 | expr_set_precedence (); | ||||
2392 | |||||
2393 | #ifdef MRI_MODE_CHANGE | ||||
2394 | if (on != old_flag) | ||||
2395 | MRI_MODE_CHANGE (on); | ||||
2396 | #endif | ||||
2397 | |||||
2398 | demand_empty_rest_of_line (); | ||||
2399 | } | ||||
2400 | |||||
2401 | /* Handle changing the location counter. */ | ||||
2402 | |||||
2403 | static void | ||||
2404 | do_org (segT segment, expressionS *exp, int fill) | ||||
2405 | { | ||||
2406 | if (segment != now_seg && segment != absolute_section((asection *) &bfd_abs_section)) | ||||
2407 | as_bad (_("invalid segment \"%s\"")("invalid segment \"%s\""), segment_name (segment)((segment)->name + 0)); | ||||
2408 | |||||
2409 | if (now_seg == absolute_section((asection *) &bfd_abs_section)) | ||||
2410 | { | ||||
2411 | if (fill != 0) | ||||
2412 | as_warn (_("ignoring fill value in absolute section")("ignoring fill value in absolute section")); | ||||
2413 | if (exp->X_op != O_constant) | ||||
2414 | { | ||||
2415 | as_bad (_("only constant offsets supported in absolute section")("only constant offsets supported in absolute section")); | ||||
2416 | exp->X_add_number = 0; | ||||
2417 | } | ||||
2418 | abs_section_offset = exp->X_add_number; | ||||
2419 | } | ||||
2420 | else | ||||
2421 | { | ||||
2422 | char *p; | ||||
2423 | symbolS *sym = exp->X_add_symbol; | ||||
2424 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE(1<<0); | ||||
2425 | |||||
2426 | if (exp->X_op != O_constant && exp->X_op != O_symbol) | ||||
2427 | { | ||||
2428 | /* Handle complex expressions. */ | ||||
2429 | sym = make_expr_symbol (exp); | ||||
2430 | off = 0; | ||||
2431 | } | ||||
2432 | |||||
2433 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | ||||
2434 | *p = fill; | ||||
2435 | } | ||||
2436 | } | ||||
2437 | |||||
2438 | void | ||||
2439 | s_org (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
2440 | { | ||||
2441 | register segT segment; | ||||
2442 | expressionS exp; | ||||
2443 | register long temp_fill; | ||||
2444 | |||||
2445 | #ifdef md_flush_pending_output | ||||
2446 | md_flush_pending_output (); | ||||
2447 | #endif | ||||
2448 | |||||
2449 | /* The m68k MRI assembler has a different meaning for .org. It | ||||
2450 | means to create an absolute section at a given address. We can't | ||||
2451 | support that--use a linker script instead. */ | ||||
2452 | if (flag_m68k_mri0) | ||||
2453 | { | ||||
2454 | as_bad (_("MRI style ORG pseudo-op not supported")("MRI style ORG pseudo-op not supported")); | ||||
2455 | ignore_rest_of_line (); | ||||
2456 | return; | ||||
2457 | } | ||||
2458 | |||||
2459 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | ||||
2460 | thing as a sub-segment-relative origin. Any absolute origin is | ||||
2461 | given a warning, then assumed to be segment-relative. Any | ||||
2462 | segmented origin expression ("foo+42") had better be in the right | ||||
2463 | segment or the .org is ignored. | ||||
2464 | |||||
2465 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | ||||
2466 | we never know sub-segment sizes when we are reading code. BSD | ||||
2467 | will crash trying to emit negative numbers of filler bytes in | ||||
2468 | certain .orgs. We don't crash, but see as-write for that code. | ||||
2469 | |||||
2470 | Don't make frag if need_pass_2==1. */ | ||||
2471 | segment = get_known_segmented_expression (&exp); | ||||
2472 | if (*input_line_pointer == ',') | ||||
2473 | { | ||||
2474 | input_line_pointer++; | ||||
2475 | temp_fill = get_absolute_expression (); | ||||
2476 | } | ||||
2477 | else | ||||
2478 | temp_fill = 0; | ||||
2479 | |||||
2480 | if (!need_pass_2) | ||||
2481 | do_org (segment, &exp, temp_fill); | ||||
2482 | |||||
2483 | demand_empty_rest_of_line (); | ||||
2484 | } | ||||
2485 | |||||
2486 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | ||||
2487 | called by the obj-format routine which handles section changing | ||||
2488 | when in MRI mode. It will create a new section, and return it. It | ||||
2489 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | ||||
2490 | 'M' (mixed), or 'R' (romable). The flags will be set in the section. */ | ||||
2491 | |||||
2492 | void | ||||
2493 | s_mri_sect (char *type ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
2494 | { | ||||
2495 | #ifdef TC_M68K | ||||
2496 | |||||
2497 | char *name; | ||||
2498 | char c; | ||||
2499 | segT seg; | ||||
2500 | |||||
2501 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2502 | |||||
2503 | name = input_line_pointer; | ||||
2504 | if (!ISDIGIT (*name)(_sch_istable[(*name) & 0xff] & (unsigned short)(_sch_isdigit ))) | ||||
2505 | c = get_symbol_end (); | ||||
2506 | else | ||||
2507 | { | ||||
2508 | do | ||||
2509 | { | ||||
2510 | ++input_line_pointer; | ||||
2511 | } | ||||
2512 | while (ISDIGIT (*input_line_pointer)(_sch_istable[(*input_line_pointer) & 0xff] & (unsigned short)(_sch_isdigit))); | ||||
2513 | |||||
2514 | c = *input_line_pointer; | ||||
2515 | *input_line_pointer = '\0'; | ||||
2516 | } | ||||
2517 | |||||
2518 | name = xstrdup (name); | ||||
2519 | |||||
2520 | *input_line_pointer = c; | ||||
2521 | |||||
2522 | seg = subseg_new (name, 0); | ||||
2523 | |||||
2524 | if (*input_line_pointer == ',') | ||||
2525 | { | ||||
2526 | int align; | ||||
2527 | |||||
2528 | ++input_line_pointer; | ||||
2529 | align = get_absolute_expression (); | ||||
2530 | record_alignment (seg, align); | ||||
2531 | } | ||||
2532 | |||||
2533 | *type = 'C'; | ||||
2534 | if (*input_line_pointer == ',') | ||||
2535 | { | ||||
2536 | c = *++input_line_pointer; | ||||
2537 | c = TOUPPER (c)_sch_toupper[(c) & 0xff]; | ||||
2538 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') | ||||
2539 | *type = c; | ||||
2540 | else | ||||
2541 | as_bad (_("unrecognized section type")("unrecognized section type")); | ||||
2542 | ++input_line_pointer; | ||||
2543 | |||||
2544 | { | ||||
2545 | flagword flags; | ||||
2546 | |||||
2547 | flags = SEC_NO_FLAGS0x000; | ||||
2548 | if (*type == 'C') | ||||
2549 | flags = SEC_ALLOC0x001 | SEC_LOAD0x002 | SEC_READONLY0x008 | SEC_CODE0x010; | ||||
2550 | else if (*type == 'D' || *type == 'M') | ||||
2551 | flags = SEC_ALLOC0x001 | SEC_LOAD0x002 | SEC_DATA0x020; | ||||
2552 | else if (*type == 'R') | ||||
2553 | flags = SEC_ALLOC0x001 | SEC_LOAD0x002 | SEC_DATA0x020 | SEC_READONLY0x008 | SEC_ROM0x040; | ||||
2554 | if (flags != SEC_NO_FLAGS0x000) | ||||
2555 | { | ||||
2556 | if (!bfd_set_section_flags (stdoutput, seg, flags)) | ||||
2557 | as_warn (_("error setting flags for \"%s\": %s")("error setting flags for \"%s\": %s"), | ||||
2558 | bfd_section_name (stdoutput, seg)((seg)->name), | ||||
2559 | bfd_errmsg (bfd_get_error ())); | ||||
2560 | } | ||||
2561 | } | ||||
2562 | } | ||||
2563 | |||||
2564 | /* Ignore the HP type. */ | ||||
2565 | if (*input_line_pointer == ',') | ||||
2566 | input_line_pointer += 2; | ||||
2567 | |||||
2568 | demand_empty_rest_of_line (); | ||||
2569 | |||||
2570 | #else /* ! TC_M68K */ | ||||
2571 | #ifdef TC_I960 | ||||
2572 | |||||
2573 | char *name; | ||||
2574 | char c; | ||||
2575 | segT seg; | ||||
2576 | |||||
2577 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2578 | |||||
2579 | name = input_line_pointer; | ||||
2580 | c = get_symbol_end (); | ||||
2581 | |||||
2582 | name = xstrdup (name); | ||||
2583 | |||||
2584 | *input_line_pointer = c; | ||||
2585 | |||||
2586 | seg = subseg_new (name, 0); | ||||
2587 | |||||
2588 | if (*input_line_pointer != ',') | ||||
2589 | *type = 'C'; | ||||
2590 | else | ||||
2591 | { | ||||
2592 | char *sectype; | ||||
2593 | |||||
2594 | ++input_line_pointer; | ||||
2595 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2596 | sectype = input_line_pointer; | ||||
2597 | c = get_symbol_end (); | ||||
2598 | if (*sectype == '\0') | ||||
2599 | *type = 'C'; | ||||
2600 | else if (strcasecmp (sectype, "text") == 0) | ||||
2601 | *type = 'C'; | ||||
2602 | else if (strcasecmp (sectype, "data") == 0) | ||||
2603 | *type = 'D'; | ||||
2604 | else if (strcasecmp (sectype, "romdata") == 0) | ||||
2605 | *type = 'R'; | ||||
2606 | else | ||||
2607 | as_warn (_("unrecognized section type `%s'")("unrecognized section type `%s'"), sectype); | ||||
2608 | *input_line_pointer = c; | ||||
2609 | } | ||||
2610 | |||||
2611 | if (*input_line_pointer == ',') | ||||
2612 | { | ||||
2613 | char *seccmd; | ||||
2614 | |||||
2615 | ++input_line_pointer; | ||||
2616 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2617 | seccmd = input_line_pointer; | ||||
2618 | c = get_symbol_end (); | ||||
2619 | if (strcasecmp (seccmd, "absolute") == 0) | ||||
2620 | { | ||||
2621 | as_bad (_("absolute sections are not supported")("absolute sections are not supported")); | ||||
2622 | *input_line_pointer = c; | ||||
2623 | ignore_rest_of_line (); | ||||
2624 | return; | ||||
2625 | } | ||||
2626 | else if (strcasecmp (seccmd, "align") == 0) | ||||
2627 | { | ||||
2628 | int align; | ||||
2629 | |||||
2630 | *input_line_pointer = c; | ||||
2631 | align = get_absolute_expression (); | ||||
2632 | record_alignment (seg, align); | ||||
2633 | } | ||||
2634 | else | ||||
2635 | { | ||||
2636 | as_warn (_("unrecognized section command `%s'")("unrecognized section command `%s'"), seccmd); | ||||
2637 | *input_line_pointer = c; | ||||
2638 | } | ||||
2639 | } | ||||
2640 | |||||
2641 | demand_empty_rest_of_line (); | ||||
2642 | |||||
2643 | #else /* ! TC_I960 */ | ||||
2644 | /* The MRI assembler seems to use different forms of .sect for | ||||
2645 | different targets. */ | ||||
2646 | as_bad ("MRI mode not supported for this target"); | ||||
2647 | ignore_rest_of_line (); | ||||
2648 | #endif /* ! TC_I960 */ | ||||
2649 | #endif /* ! TC_M68K */ | ||||
2650 | } | ||||
2651 | |||||
2652 | /* Handle the .print pseudo-op. */ | ||||
2653 | |||||
2654 | void | ||||
2655 | s_print (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
2656 | { | ||||
2657 | char *s; | ||||
2658 | int len; | ||||
2659 | |||||
2660 | s = demand_copy_C_string (&len); | ||||
2661 | if (s != NULL((void*)0)) | ||||
2662 | printf ("%s\n", s); | ||||
2663 | demand_empty_rest_of_line (); | ||||
2664 | } | ||||
2665 | |||||
2666 | /* Handle the .purgem pseudo-op. */ | ||||
2667 | |||||
2668 | void | ||||
2669 | s_purgem (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
2670 | { | ||||
2671 | if (is_it_end_of_statement ()) | ||||
2672 | { | ||||
2673 | demand_empty_rest_of_line (); | ||||
2674 | return; | ||||
2675 | } | ||||
2676 | |||||
2677 | do | ||||
2678 | { | ||||
2679 | char *name; | ||||
2680 | char c; | ||||
2681 | |||||
2682 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2683 | name = input_line_pointer; | ||||
2684 | c = get_symbol_end (); | ||||
2685 | delete_macro (name); | ||||
2686 | *input_line_pointer = c; | ||||
2687 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2688 | } | ||||
2689 | while (*input_line_pointer++ == ','); | ||||
2690 | |||||
2691 | --input_line_pointer; | ||||
2692 | demand_empty_rest_of_line (); | ||||
2693 | } | ||||
2694 | |||||
2695 | /* Handle the .endm/.endr pseudo-ops. */ | ||||
2696 | |||||
2697 | static void | ||||
2698 | s_bad_end (int endr) | ||||
2699 | { | ||||
2700 | as_warn (_(".end%c encountered without preceeding %s")(".end%c encountered without preceeding %s"), | ||||
2701 | endr ? 'r' : 'm', | ||||
2702 | endr ? ".rept, .irp, or .irpc" : ".macro"); | ||||
2703 | demand_empty_rest_of_line (); | ||||
2704 | } | ||||
2705 | |||||
2706 | /* Handle the .rept pseudo-op. */ | ||||
2707 | |||||
2708 | void | ||||
2709 | s_rept (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
2710 | { | ||||
2711 | int count; | ||||
2712 | |||||
2713 | count = get_absolute_expression (); | ||||
2714 | |||||
2715 | do_repeat (count, "REPT", "ENDR"); | ||||
2716 | } | ||||
2717 | |||||
2718 | /* This function provides a generic repeat block implementation. It allows | ||||
2719 | different directives to be used as the start/end keys. */ | ||||
2720 | |||||
2721 | void | ||||
2722 | do_repeat (int count, const char *start, const char *end) | ||||
2723 | { | ||||
2724 | sb one; | ||||
2725 | sb many; | ||||
2726 | |||||
2727 | sb_new (&one); | ||||
2728 | if (!buffer_and_nest (start, end, &one, get_line_sb)) | ||||
2729 | { | ||||
2730 | as_bad (_("%s without %s")("%s without %s"), start, end); | ||||
2731 | return; | ||||
2732 | } | ||||
2733 | |||||
2734 | sb_new (&many); | ||||
2735 | while (count-- > 0) | ||||
2736 | sb_add_sb (&many, &one); | ||||
2737 | |||||
2738 | sb_kill (&one); | ||||
2739 | |||||
2740 | input_scrub_include_sb (&many, input_line_pointer, 1); | ||||
2741 | sb_kill (&many); | ||||
2742 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | ||||
2743 | } | ||||
2744 | |||||
2745 | /* Skip to end of current repeat loop; EXTRA indicates how many additional | ||||
2746 | input buffers to skip. Assumes that conditionals preceding the loop end | ||||
2747 | are properly nested. | ||||
2748 | |||||
2749 | This function makes it easier to implement a premature "break" out of the | ||||
2750 | loop. The EXTRA arg accounts for other buffers we might have inserted, | ||||
2751 | such as line substitutions. */ | ||||
2752 | |||||
2753 | void | ||||
2754 | end_repeat (int extra) | ||||
2755 | { | ||||
2756 | cond_exit_macro (macro_nest); | ||||
2757 | while (extra-- >= 0) | ||||
2758 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | ||||
2759 | } | ||||
2760 | |||||
2761 | static void | ||||
2762 | assign_symbol (char *name, int mode) | ||||
2763 | { | ||||
2764 | symbolS *symbolP; | ||||
2765 | |||||
2766 | if (name[0] == '.' && name[1] == '\0') | ||||
2767 | { | ||||
2768 | /* Turn '. = mumble' into a .org mumble. */ | ||||
2769 | segT segment; | ||||
2770 | expressionS exp; | ||||
2771 | |||||
2772 | segment = get_known_segmented_expression (&exp); | ||||
2773 | |||||
2774 | if (!need_pass_2) | ||||
2775 | do_org (segment, &exp, 0); | ||||
2776 | |||||
2777 | return; | ||||
2778 | } | ||||
2779 | |||||
2780 | if ((symbolP = symbol_find (name)) == NULL((void*)0) | ||||
2781 | && (symbolP = md_undefined_symbol (name)) == NULL((void*)0)) | ||||
2782 | { | ||||
2783 | symbolP = symbol_find_or_make (name); | ||||
2784 | #ifndef NO_LISTING | ||||
2785 | /* When doing symbol listings, play games with dummy fragments living | ||||
2786 | outside the normal fragment chain to record the file and line info | ||||
2787 | for this symbol. */ | ||||
2788 | if (listing & LISTING_SYMBOLS2) | ||||
2789 | { | ||||
2790 | extern struct list_info_struct *listing_tail; | ||||
2791 | fragS *dummy_frag = (fragS *) xcalloc (1, sizeof (fragS)); | ||||
2792 | dummy_frag->line = listing_tail; | ||||
2793 | dummy_frag->fr_symbol = symbolP; | ||||
2794 | symbol_set_frag (symbolP, dummy_frag); | ||||
2795 | } | ||||
2796 | #endif | ||||
2797 | #ifdef OBJ_COFF | ||||
2798 | /* "set" symbols are local unless otherwise specified. */ | ||||
2799 | SF_SET_LOCAL (symbolP); | ||||
2800 | #endif | ||||
2801 | } | ||||
2802 | |||||
2803 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) | ||||
2804 | { | ||||
2805 | /* Permit register names to be redefined. */ | ||||
2806 | if ((mode != 0 || !S_IS_VOLATILE (symbolP)) | ||||
2807 | && S_GET_SEGMENT (symbolP) != reg_section) | ||||
2808 | { | ||||
2809 | as_bad (_("symbol `%s' is already defined")("symbol `%s' is already defined"), name); | ||||
2810 | symbolP = symbol_clone (symbolP, 0); | ||||
2811 | } | ||||
2812 | /* If the symbol is volatile, copy the symbol and replace the | ||||
2813 | original with the copy, so that previous uses of the symbol will | ||||
2814 | retain the value of the symbol at the point of use. */ | ||||
2815 | else if (S_IS_VOLATILE (symbolP) | ||||
2816 | /* This could be avoided when the symbol wasn't used so far, but | ||||
2817 | the comment in struc-symbol.h says this flag isn't reliable. */ | ||||
2818 | && (1 || symbol_used_p (symbolP))) | ||||
2819 | symbolP = symbol_clone (symbolP, 1); | ||||
2820 | } | ||||
2821 | |||||
2822 | if (mode == 0) | ||||
2823 | S_SET_VOLATILE (symbolP); | ||||
2824 | else if (mode < 0) | ||||
2825 | S_SET_FORWARD_REF (symbolP); | ||||
2826 | |||||
2827 | pseudo_set (symbolP); | ||||
2828 | } | ||||
2829 | |||||
2830 | /* Handle the .equ, .equiv, .eqv, and .set directives. If EQUIV is 1, | ||||
2831 | then this is .equiv, and it is an error if the symbol is already | ||||
2832 | defined. If EQUIV is -1, the symbol additionally is a forward | ||||
2833 | reference. */ | ||||
2834 | |||||
2835 | void | ||||
2836 | s_set (int equiv) | ||||
2837 | { | ||||
2838 | char *name; | ||||
2839 | char delim; | ||||
2840 | char *end_name; | ||||
2841 | |||||
2842 | /* Especial apologies for the random logic: | ||||
2843 | this just grew, and could be parsed much more simply! | ||||
2844 | Dean in haste. */ | ||||
2845 | name = input_line_pointer; | ||||
2846 | delim = get_symbol_end (); | ||||
2847 | end_name = input_line_pointer; | ||||
2848 | *end_name = delim; | ||||
2849 | |||||
2850 | if (name == end_name) | ||||
2851 | { | ||||
2852 | as_bad (_("expected symbol name")("expected symbol name")); | ||||
2853 | ignore_rest_of_line (); | ||||
2854 | return; | ||||
2855 | } | ||||
2856 | |||||
2857 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2858 | |||||
2859 | if (*input_line_pointer != ',') | ||||
2860 | { | ||||
2861 | *end_name = 0; | ||||
2862 | as_bad (_("expected comma after \"%s\"")("expected comma after \"%s\""), name); | ||||
2863 | *end_name = delim; | ||||
2864 | ignore_rest_of_line (); | ||||
2865 | return; | ||||
2866 | } | ||||
2867 | |||||
2868 | input_line_pointer++; | ||||
2869 | *end_name = 0; | ||||
2870 | |||||
2871 | assign_symbol (name, equiv); | ||||
2872 | *end_name = delim; | ||||
2873 | |||||
2874 | demand_empty_rest_of_line (); | ||||
2875 | } | ||||
2876 | |||||
2877 | void | ||||
2878 | s_space (int mult) | ||||
2879 | { | ||||
2880 | expressionS exp; | ||||
2881 | expressionS val; | ||||
2882 | char *p = 0; | ||||
2883 | char *stop = NULL((void*)0); | ||||
2884 | char stopc; | ||||
2885 | int bytes; | ||||
2886 | |||||
2887 | #ifdef md_flush_pending_output | ||||
2888 | md_flush_pending_output (); | ||||
2889 | #endif | ||||
2890 | |||||
2891 | if (flag_mri) | ||||
2892 | stop = mri_comment_field (&stopc); | ||||
2893 | |||||
2894 | /* In m68k MRI mode, we need to align to a word boundary, unless | ||||
2895 | this is ds.b. */ | ||||
2896 | if (flag_m68k_mri0 && mult > 1) | ||||
2897 | { | ||||
2898 | if (now_seg == absolute_section((asection *) &bfd_abs_section)) | ||||
2899 | { | ||||
2900 | abs_section_offset += abs_section_offset & 1; | ||||
2901 | if (line_label != NULL((void*)0)) | ||||
2902 | S_SET_VALUE (line_label, abs_section_offset); | ||||
2903 | } | ||||
2904 | else if (mri_common_symbol != NULL((void*)0)) | ||||
2905 | { | ||||
2906 | valueT val; | ||||
2907 | |||||
2908 | val = S_GET_VALUE (mri_common_symbol); | ||||
2909 | if ((val & 1) != 0) | ||||
2910 | { | ||||
2911 | S_SET_VALUE (mri_common_symbol, val + 1); | ||||
2912 | if (line_label != NULL((void*)0)) | ||||
2913 | { | ||||
2914 | expressionS *symexp; | ||||
2915 | |||||
2916 | symexp = symbol_get_value_expression (line_label); | ||||
2917 | know (symexp->X_op == O_symbol); | ||||
2918 | know (symexp->X_add_symbol == mri_common_symbol); | ||||
2919 | symexp->X_add_number += 1; | ||||
2920 | } | ||||
2921 | } | ||||
2922 | } | ||||
2923 | else | ||||
2924 | { | ||||
2925 | do_align (1, (char *) NULL((void*)0), 0, 0); | ||||
2926 | if (line_label != NULL((void*)0)) | ||||
2927 | { | ||||
2928 | symbol_set_frag (line_label, frag_now); | ||||
2929 | S_SET_VALUE (line_label, frag_now_fix ()); | ||||
2930 | } | ||||
2931 | } | ||||
2932 | } | ||||
2933 | |||||
2934 | bytes = mult; | ||||
2935 | |||||
2936 | expression (&exp)expr (0, &exp, expr_normal); | ||||
2937 | |||||
2938 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
2939 | if (*input_line_pointer == ',') | ||||
2940 | { | ||||
2941 | ++input_line_pointer; | ||||
2942 | expression (&val)expr (0, &val, expr_normal); | ||||
2943 | } | ||||
2944 | else | ||||
2945 | { | ||||
2946 | val.X_op = O_constant; | ||||
2947 | val.X_add_number = 0; | ||||
2948 | } | ||||
2949 | |||||
2950 | if (val.X_op != O_constant | ||||
2951 | || val.X_add_number < - 0x80 | ||||
2952 | || val.X_add_number > 0xff | ||||
2953 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | ||||
2954 | { | ||||
2955 | resolve_expression (&exp); | ||||
2956 | if (exp.X_op != O_constant) | ||||
2957 | as_bad (_("unsupported variable size or fill value")("unsupported variable size or fill value")); | ||||
2958 | else | ||||
2959 | { | ||||
2960 | offsetT i; | ||||
2961 | |||||
2962 | if (mult == 0) | ||||
2963 | mult = 1; | ||||
2964 | bytes = mult * exp.X_add_number; | ||||
2965 | for (i = 0; i < exp.X_add_number; i++) | ||||
2966 | emit_expr (&val, mult); | ||||
2967 | } | ||||
2968 | } | ||||
2969 | else | ||||
2970 | { | ||||
2971 | if (now_seg == absolute_section((asection *) &bfd_abs_section) || mri_common_symbol != NULL((void*)0)) | ||||
2972 | resolve_expression (&exp); | ||||
2973 | |||||
2974 | if (exp.X_op == O_constant) | ||||
2975 | { | ||||
2976 | long repeat; | ||||
2977 | |||||
2978 | repeat = exp.X_add_number; | ||||
2979 | if (mult) | ||||
2980 | repeat *= mult; | ||||
2981 | bytes = repeat; | ||||
2982 | if (repeat <= 0) | ||||
2983 | { | ||||
2984 | if (!flag_mri) | ||||
2985 | as_warn (_(".space repeat count is zero, ignored")(".space repeat count is zero, ignored")); | ||||
2986 | else if (repeat < 0) | ||||
2987 | as_warn (_(".space repeat count is negative, ignored")(".space repeat count is negative, ignored")); | ||||
2988 | goto getout; | ||||
2989 | } | ||||
2990 | |||||
2991 | /* If we are in the absolute section, just bump the offset. */ | ||||
2992 | if (now_seg == absolute_section((asection *) &bfd_abs_section)) | ||||
2993 | { | ||||
2994 | abs_section_offset += repeat; | ||||
2995 | goto getout; | ||||
2996 | } | ||||
2997 | |||||
2998 | /* If we are secretly in an MRI common section, then | ||||
2999 | creating space just increases the size of the common | ||||
3000 | symbol. */ | ||||
3001 | if (mri_common_symbol != NULL((void*)0)) | ||||
3002 | { | ||||
3003 | S_SET_VALUE (mri_common_symbol, | ||||
3004 | S_GET_VALUE (mri_common_symbol) + repeat); | ||||
3005 | goto getout; | ||||
3006 | } | ||||
3007 | |||||
3008 | if (!need_pass_2) | ||||
3009 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | ||||
3010 | (offsetT) repeat, (char *) 0); | ||||
3011 | } | ||||
3012 | else | ||||
3013 | { | ||||
3014 | if (now_seg == absolute_section((asection *) &bfd_abs_section)) | ||||
3015 | { | ||||
3016 | as_bad (_("space allocation too complex in absolute section")("space allocation too complex in absolute section")); | ||||
3017 | subseg_set (text_section, 0); | ||||
3018 | } | ||||
3019 | |||||
3020 | if (mri_common_symbol != NULL((void*)0)) | ||||
3021 | { | ||||
3022 | as_bad (_("space allocation too complex in common section")("space allocation too complex in common section")); | ||||
3023 | mri_common_symbol = NULL((void*)0); | ||||
3024 | } | ||||
3025 | |||||
3026 | if (!need_pass_2) | ||||
3027 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | ||||
3028 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | ||||
3029 | } | ||||
3030 | |||||
3031 | if (p) | ||||
3032 | *p = val.X_add_number; | ||||
3033 | } | ||||
3034 | |||||
3035 | getout: | ||||
3036 | |||||
3037 | /* In MRI mode, after an odd number of bytes, we must align to an | ||||
3038 | even word boundary, unless the next instruction is a dc.b, ds.b | ||||
3039 | or dcb.b. */ | ||||
3040 | if (flag_mri && (bytes & 1) != 0) | ||||
3041 | mri_pending_align = 1; | ||||
3042 | |||||
3043 | demand_empty_rest_of_line (); | ||||
3044 | |||||
3045 | if (flag_mri) | ||||
3046 | mri_comment_end (stop, stopc); | ||||
3047 | } | ||||
3048 | |||||
3049 | /* This is like s_space, but the value is a floating point number with | ||||
3050 | the given precision. This is for the MRI dcb.s pseudo-op and | ||||
3051 | friends. */ | ||||
3052 | |||||
3053 | void | ||||
3054 | s_float_space (int float_type) | ||||
3055 | { | ||||
3056 | offsetT count; | ||||
3057 | int flen; | ||||
3058 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT(16)]; | ||||
3059 | char *stop = NULL((void*)0); | ||||
3060 | char stopc; | ||||
3061 | |||||
3062 | if (flag_mri) | ||||
3063 | stop = mri_comment_field (&stopc); | ||||
3064 | |||||
3065 | count = get_absolute_expression (); | ||||
3066 | |||||
3067 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
3068 | if (*input_line_pointer != ',') | ||||
3069 | { | ||||
3070 | as_bad (_("missing value")("missing value")); | ||||
3071 | ignore_rest_of_line (); | ||||
3072 | if (flag_mri) | ||||
3073 | mri_comment_end (stop, stopc); | ||||
3074 | return; | ||||
3075 | } | ||||
3076 | |||||
3077 | ++input_line_pointer; | ||||
3078 | |||||
3079 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
3080 | |||||
3081 | /* Skip any 0{letter} that may be present. Don't even check if the | ||||
3082 | * letter is legal. */ | ||||
3083 | if (input_line_pointer[0] == '0' | ||||
3084 | && ISALPHA (input_line_pointer[1])(_sch_istable[(input_line_pointer[1]) & 0xff] & (unsigned short)(_sch_isalpha))) | ||||
3085 | input_line_pointer += 2; | ||||
3086 | |||||
3087 | /* Accept :xxxx, where the x's are hex digits, for a floating point | ||||
3088 | with the exact digits specified. */ | ||||
3089 | if (input_line_pointer[0] == ':') | ||||
3090 | { | ||||
3091 | flen = hex_float (float_type, temp); | ||||
3092 | if (flen < 0) | ||||
3093 | { | ||||
3094 | ignore_rest_of_line (); | ||||
3095 | if (flag_mri) | ||||
3096 | mri_comment_end (stop, stopc); | ||||
3097 | return; | ||||
3098 | } | ||||
3099 | } | ||||
3100 | else | ||||
3101 | { | ||||
3102 | char *err; | ||||
3103 | |||||
3104 | err = md_atof (float_type, temp, &flen); | ||||
3105 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | ||||
3106 | know (flen > 0); | ||||
3107 | if (err) | ||||
3108 | { | ||||
3109 | as_bad (_("bad floating literal: %s")("bad floating literal: %s"), err); | ||||
3110 | ignore_rest_of_line (); | ||||
3111 | if (flag_mri) | ||||
3112 | mri_comment_end (stop, stopc); | ||||
3113 | return; | ||||
3114 | } | ||||
3115 | } | ||||
3116 | |||||
3117 | while (--count >= 0) | ||||
3118 | { | ||||
3119 | char *p; | ||||
3120 | |||||
3121 | p = frag_more (flen); | ||||
3122 | memcpy (p, temp, (unsigned int) flen); | ||||
3123 | } | ||||
3124 | |||||
3125 | demand_empty_rest_of_line (); | ||||
3126 | |||||
3127 | if (flag_mri) | ||||
3128 | mri_comment_end (stop, stopc); | ||||
3129 | } | ||||
3130 | |||||
3131 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | ||||
3132 | |||||
3133 | void | ||||
3134 | s_struct (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
3135 | { | ||||
3136 | char *stop = NULL((void*)0); | ||||
3137 | char stopc; | ||||
3138 | |||||
3139 | if (flag_mri) | ||||
3140 | stop = mri_comment_field (&stopc); | ||||
3141 | abs_section_offset = get_absolute_expression (); | ||||
3142 | subseg_set (absolute_section((asection *) &bfd_abs_section), 0); | ||||
3143 | demand_empty_rest_of_line (); | ||||
3144 | if (flag_mri) | ||||
3145 | mri_comment_end (stop, stopc); | ||||
3146 | } | ||||
3147 | |||||
3148 | void | ||||
3149 | s_text (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
3150 | { | ||||
3151 | register int temp; | ||||
3152 | |||||
3153 | temp = get_absolute_expression (); | ||||
3154 | subseg_set (text_section, (subsegT) temp); | ||||
3155 | demand_empty_rest_of_line (); | ||||
3156 | #ifdef OBJ_VMS | ||||
3157 | const_flag &= ~IN_DEFAULT_SECTION; | ||||
3158 | #endif | ||||
3159 | } | ||||
3160 | |||||
3161 | /* .weakref x, y sets x as an alias to y that, as long as y is not | ||||
3162 | referenced directly, will cause y to become a weak symbol. */ | ||||
3163 | void | ||||
3164 | s_weakref (int ignore ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
3165 | { | ||||
3166 | char *name; | ||||
3167 | char delim; | ||||
3168 | char *end_name; | ||||
3169 | symbolS *symbolP; | ||||
3170 | symbolS *symbolP2; | ||||
3171 | expressionS exp; | ||||
3172 | |||||
3173 | name = input_line_pointer; | ||||
3174 | delim = get_symbol_end (); | ||||
3175 | end_name = input_line_pointer; | ||||
3176 | |||||
3177 | if (name == end_name) | ||||
3178 | { | ||||
3179 | as_bad (_("expected symbol name")("expected symbol name")); | ||||
3180 | *end_name = delim; | ||||
3181 | ignore_rest_of_line (); | ||||
3182 | return; | ||||
3183 | } | ||||
3184 | |||||
3185 | symbolP = symbol_find_or_make (name); | ||||
3186 | |||||
3187 | if (S_IS_DEFINED (symbolP) || symbol_equated_p (symbolP)) | ||||
3188 | { | ||||
3189 | if(!S_IS_VOLATILE (symbolP)) | ||||
3190 | { | ||||
3191 | as_bad (_("symbol `%s' is already defined")("symbol `%s' is already defined"), name); | ||||
3192 | *end_name = delim; | ||||
3193 | ignore_rest_of_line (); | ||||
3194 | return; | ||||
3195 | } | ||||
3196 | /* This could be avoided when the symbol wasn't used so far, but | ||||
3197 | the comment in struc-symbol.h says this flag isn't reliable. */ | ||||
3198 | if (1 || !symbol_used_p (symbolP)) | ||||
3199 | symbolP = symbol_clone (symbolP, 1); | ||||
3200 | S_CLEAR_VOLATILE (symbolP); | ||||
3201 | } | ||||
3202 | |||||
3203 | *end_name = delim; | ||||
3204 | |||||
3205 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
3206 | |||||
3207 | if (*input_line_pointer != ',') | ||||
3208 | { | ||||
3209 | *end_name = 0; | ||||
3210 | as_bad (_("expected comma after \"%s\"")("expected comma after \"%s\""), name); | ||||
3211 | *end_name = delim; | ||||
3212 | ignore_rest_of_line (); | ||||
3213 | return; | ||||
3214 | } | ||||
3215 | |||||
3216 | input_line_pointer++; | ||||
3217 | |||||
3218 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
3219 | |||||
3220 | name = input_line_pointer; | ||||
3221 | delim = get_symbol_end (); | ||||
3222 | end_name = input_line_pointer; | ||||
3223 | |||||
3224 | if (name == end_name) | ||||
3225 | { | ||||
3226 | as_bad (_("expected symbol name")("expected symbol name")); | ||||
3227 | ignore_rest_of_line (); | ||||
3228 | return; | ||||
3229 | } | ||||
3230 | |||||
3231 | if ((symbolP2 = symbol_find_noref (name, 1)) == NULL((void*)0) | ||||
3232 | && (symbolP2 = md_undefined_symbol (name)) == NULL((void*)0)) | ||||
3233 | { | ||||
3234 | symbolP2 = symbol_find_or_make (name); | ||||
3235 | S_SET_WEAKREFD (symbolP2); | ||||
3236 | } | ||||
3237 | else | ||||
3238 | { | ||||
3239 | symbolS *symp = symbolP2; | ||||
3240 | |||||
3241 | while (S_IS_WEAKREFR (symp) && symp != symbolP) | ||||
3242 | { | ||||
3243 | expressionS *expP = symbol_get_value_expression (symp); | ||||
3244 | |||||
3245 | assert (expP->X_op == O_symbol((void) ((expP->X_op == O_symbol && expP->X_add_number == 0) ? 0 : (as_assert ("/usr/src/gnu/usr.bin/binutils-2.17/gas/read.c" , 3246, __PRETTY_FUNCTION__), 0))) | ||||
3246 | && expP->X_add_number == 0)((void) ((expP->X_op == O_symbol && expP->X_add_number == 0) ? 0 : (as_assert ("/usr/src/gnu/usr.bin/binutils-2.17/gas/read.c" , 3246, __PRETTY_FUNCTION__), 0))); | ||||
3247 | symp = expP->X_add_symbol; | ||||
3248 | } | ||||
3249 | if (symp == symbolP) | ||||
3250 | { | ||||
3251 | char *loop; | ||||
3252 | |||||
3253 | loop = concat (S_GET_NAME (symbolP), | ||||
3254 | " => ", S_GET_NAME (symbolP2), NULL((void*)0)); | ||||
3255 | |||||
3256 | symp = symbolP2; | ||||
3257 | while (symp != symbolP) | ||||
3258 | { | ||||
3259 | char *old_loop = loop; | ||||
3260 | symp = symbol_get_value_expression (symp)->X_add_symbol; | ||||
3261 | loop = concat (loop, " => ", S_GET_NAME (symp), NULL((void*)0)); | ||||
3262 | free (old_loop); | ||||
3263 | } | ||||
3264 | |||||
3265 | as_bad (_("%s: would close weakref loop: %s")("%s: would close weakref loop: %s"), | ||||
3266 | S_GET_NAME (symbolP), loop); | ||||
3267 | |||||
3268 | free (loop); | ||||
3269 | |||||
3270 | *end_name = delim; | ||||
3271 | ignore_rest_of_line (); | ||||
3272 | return; | ||||
3273 | } | ||||
3274 | |||||
3275 | /* Short-circuiting instead of just checking here might speed | ||||
3276 | things up a tiny little bit, but loop error messages would | ||||
3277 | miss intermediate links. */ | ||||
3278 | /* symbolP2 = symp; */ | ||||
3279 | } | ||||
3280 | |||||
3281 | *end_name = delim; | ||||
3282 | |||||
3283 | memset (&exp, 0, sizeof (exp)); | ||||
3284 | exp.X_op = O_symbol; | ||||
3285 | exp.X_add_symbol = symbolP2; | ||||
3286 | |||||
3287 | S_SET_SEGMENT (symbolP, undefined_section((asection *) &bfd_und_section)); | ||||
3288 | symbol_set_value_expression (symbolP, &exp); | ||||
3289 | symbol_set_frag (symbolP, &zero_address_frag); | ||||
3290 | S_SET_WEAKREFR (symbolP); | ||||
3291 | |||||
3292 | demand_empty_rest_of_line (); | ||||
3293 | } | ||||
3294 | |||||
3295 | |||||
3296 | /* Verify that we are at the end of a line. If not, issue an error and | ||||
3297 | skip to EOL. */ | ||||
3298 | |||||
3299 | void | ||||
3300 | demand_empty_rest_of_line (void) | ||||
3301 | { | ||||
3302 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
3303 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | ||||
3304 | input_line_pointer++; | ||||
3305 | else | ||||
3306 | { | ||||
3307 | if (ISPRINT (*input_line_pointer)(_sch_istable[(*input_line_pointer) & 0xff] & (unsigned short)(_sch_isprint))) | ||||
3308 | as_bad (_("junk at end of line, first unrecognized character is `%c'")("junk at end of line, first unrecognized character is `%c'"), | ||||
3309 | *input_line_pointer); | ||||
3310 | else | ||||
3311 | as_bad (_("junk at end of line, first unrecognized character valued 0x%x")("junk at end of line, first unrecognized character valued 0x%x" ), | ||||
3312 | *input_line_pointer); | ||||
3313 | ignore_rest_of_line (); | ||||
3314 | } | ||||
3315 | |||||
3316 | /* Return pointing just after end-of-line. */ | ||||
3317 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | ||||
3318 | } | ||||
3319 | |||||
3320 | /* Silently advance to the end of line. Use this after already having | ||||
3321 | issued an error about something bad. */ | ||||
3322 | |||||
3323 | void | ||||
3324 | ignore_rest_of_line (void) | ||||
3325 | { | ||||
3326 | while (input_line_pointer < buffer_limit | ||||
3327 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | ||||
3328 | input_line_pointer++; | ||||
3329 | |||||
3330 | input_line_pointer++; | ||||
3331 | |||||
3332 | /* Return pointing just after end-of-line. */ | ||||
3333 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); | ||||
3334 | } | ||||
3335 | |||||
3336 | /* Sets frag for given symbol to zero_address_frag, except when the | ||||
3337 | symbol frag is already set to a dummy listing frag. */ | ||||
3338 | |||||
3339 | static void | ||||
3340 | set_zero_frag (symbolS *symbolP) | ||||
3341 | { | ||||
3342 | if (symbol_get_frag (symbolP)->fr_type != rs_dummy) | ||||
3343 | symbol_set_frag (symbolP, &zero_address_frag); | ||||
3344 | } | ||||
3345 | |||||
3346 | /* In: Pointer to a symbol. | ||||
3347 | Input_line_pointer->expression. | ||||
3348 | |||||
3349 | Out: Input_line_pointer->just after any whitespace after expression. | ||||
3350 | Tried to set symbol to value of expression. | ||||
3351 | Will change symbols type, value, and frag; */ | ||||
3352 | |||||
3353 | void | ||||
3354 | pseudo_set (symbolS *symbolP) | ||||
3355 | { | ||||
3356 | expressionS exp; | ||||
3357 | segT seg; | ||||
3358 | |||||
3359 | know (symbolP); /* NULL pointer is logic error. */ | ||||
3360 | |||||
3361 | if (!S_IS_FORWARD_REF (symbolP)) | ||||
3362 | (void) expression (&exp)expr (0, &exp, expr_normal); | ||||
3363 | else | ||||
3364 | (void) deferred_expression (&exp)expr (0, &exp, expr_defer); | ||||
3365 | |||||
3366 | if (exp.X_op == O_illegal) | ||||
3367 | as_bad (_("illegal expression")("illegal expression")); | ||||
3368 | else if (exp.X_op == O_absent) | ||||
3369 | as_bad (_("missing expression")("missing expression")); | ||||
3370 | else if (exp.X_op == O_big) | ||||
3371 | { | ||||
3372 | if (exp.X_add_number > 0) | ||||
3373 | as_bad (_("bignum invalid")("bignum invalid")); | ||||
3374 | else | ||||
3375 | as_bad (_("floating point number invalid")("floating point number invalid")); | ||||
3376 | } | ||||
3377 | else if (exp.X_op == O_subtract | ||||
3378 | && !S_IS_FORWARD_REF (symbolP) | ||||
3379 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol))( (S_GET_SEGMENT (exp.X_add_symbol)) != ((asection *) &bfd_abs_section ) && (S_GET_SEGMENT (exp.X_add_symbol)) != ((asection *) &bfd_und_section) && (S_GET_SEGMENT (exp.X_add_symbol )) != reg_section && (S_GET_SEGMENT (exp.X_add_symbol )) != expr_section) | ||||
3380 | && (symbol_get_frag (exp.X_add_symbol) | ||||
3381 | == symbol_get_frag (exp.X_op_symbol))) | ||||
3382 | { | ||||
3383 | exp.X_op = O_constant; | ||||
3384 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | ||||
3385 | - S_GET_VALUE (exp.X_op_symbol)); | ||||
3386 | } | ||||
3387 | |||||
3388 | if (symbol_section_p (symbolP)) | ||||
3389 | { | ||||
3390 | as_bad ("attempt to set value of section symbol"); | ||||
3391 | return; | ||||
3392 | } | ||||
3393 | |||||
3394 | switch (exp.X_op) | ||||
3395 | { | ||||
3396 | case O_illegal: | ||||
3397 | case O_absent: | ||||
3398 | case O_big: | ||||
3399 | exp.X_add_number = 0; | ||||
3400 | /* Fall through. */ | ||||
3401 | case O_constant: | ||||
3402 | S_SET_SEGMENT (symbolP, absolute_section((asection *) &bfd_abs_section)); | ||||
3403 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | ||||
3404 | set_zero_frag (symbolP); | ||||
3405 | break; | ||||
3406 | |||||
3407 | case O_register: | ||||
3408 | S_SET_SEGMENT (symbolP, reg_section); | ||||
3409 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | ||||
3410 | set_zero_frag (symbolP); | ||||
3411 | break; | ||||
3412 | |||||
3413 | case O_symbol: | ||||
3414 | seg = S_GET_SEGMENT (exp.X_add_symbol); | ||||
3415 | /* For x=undef+const, create an expression symbol. | ||||
3416 | For x=x+const, just update x except when x is an undefined symbol | ||||
3417 | For x=defined+const, evaluate x. */ | ||||
3418 | if (symbolP == exp.X_add_symbol | ||||
3419 | && (seg != undefined_section((asection *) &bfd_und_section) | ||||
3420 | || !symbol_constant_p (symbolP))) | ||||
3421 | { | ||||
3422 | *symbol_X_add_number (symbolP) += exp.X_add_number; | ||||
3423 | break; | ||||
3424 | } | ||||
3425 | else if (!S_IS_FORWARD_REF (symbolP) && seg != undefined_section((asection *) &bfd_und_section)) | ||||
3426 | { | ||||
3427 | symbolS *s = exp.X_add_symbol; | ||||
3428 | |||||
3429 | if (S_IS_COMMON (s)) | ||||
3430 | as_bad (_("`%s' can't be equated to common symbol '%s'")("`%s' can't be equated to common symbol '%s'"), | ||||
3431 | S_GET_NAME (symbolP), S_GET_NAME (s)); | ||||
3432 | |||||
3433 | S_SET_SEGMENT (symbolP, seg); | ||||
3434 | S_SET_VALUE (symbolP, exp.X_add_number + S_GET_VALUE (s)); | ||||
3435 | symbol_set_frag (symbolP, symbol_get_frag (s)); | ||||
3436 | copy_symbol_attributes (symbolP, s); | ||||
3437 | break; | ||||
3438 | } | ||||
3439 | S_SET_SEGMENT (symbolP, undefined_section((asection *) &bfd_und_section)); | ||||
3440 | symbol_set_value_expression (symbolP, &exp); | ||||
3441 | set_zero_frag (symbolP); | ||||
3442 | break; | ||||
3443 | |||||
3444 | default: | ||||
3445 | /* The value is some complex expression. */ | ||||
3446 | S_SET_SEGMENT (symbolP, expr_section); | ||||
3447 | symbol_set_value_expression (symbolP, &exp); | ||||
3448 | set_zero_frag (symbolP); | ||||
3449 | break; | ||||
3450 | } | ||||
3451 | } | ||||
3452 | |||||
3453 | /* cons() | ||||
3454 | |||||
3455 | CONStruct more frag of .bytes, or .words etc. | ||||
3456 | Should need_pass_2 be 1 then emit no frag(s). | ||||
3457 | This understands EXPRESSIONS. | ||||
3458 | |||||
3459 | Bug (?) | ||||
3460 | |||||
3461 | This has a split personality. We use expression() to read the | ||||
3462 | value. We can detect if the value won't fit in a byte or word. | ||||
3463 | But we can't detect if expression() discarded significant digits | ||||
3464 | in the case of a long. Not worth the crocks required to fix it. */ | ||||
3465 | |||||
3466 | /* Select a parser for cons expressions. */ | ||||
3467 | |||||
3468 | /* Some targets need to parse the expression in various fancy ways. | ||||
3469 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | ||||
3470 | (for example, the HPPA does this). Otherwise, you can define | ||||
3471 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | ||||
3472 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | ||||
3473 | are defined, which is the normal case, then only simple expressions | ||||
3474 | are permitted. */ | ||||
3475 | |||||
3476 | #ifdef TC_M68K | ||||
3477 | static void | ||||
3478 | parse_mri_cons (expressionS *exp, unsigned int nbytes); | ||||
3479 | #endif | ||||
3480 | |||||
3481 | #ifndef TC_PARSE_CONS_EXPRESSION | ||||
3482 | #ifdef BITFIELD_CONS_EXPRESSIONS | ||||
3483 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES)x86_cons (EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | ||||
3484 | static void | ||||
3485 | parse_bitfield_cons (expressionS *exp, unsigned int nbytes); | ||||
3486 | #endif | ||||
3487 | #ifdef REPEAT_CONS_EXPRESSIONS | ||||
3488 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES)x86_cons (EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | ||||
3489 | static void | ||||
3490 | parse_repeat_cons (expressionS *exp, unsigned int nbytes); | ||||
3491 | #endif | ||||
3492 | |||||
3493 | /* If we haven't gotten one yet, just call expression. */ | ||||
3494 | #ifndef TC_PARSE_CONS_EXPRESSION | ||||
3495 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES)x86_cons (EXP, NBYTES) expression (EXP)expr (0, EXP, expr_normal) | ||||
3496 | #endif | ||||
3497 | #endif | ||||
3498 | |||||
3499 | void | ||||
3500 | do_parse_cons_expression (expressionS *exp, | ||||
3501 | int nbytes ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
3502 | { | ||||
3503 | TC_PARSE_CONS_EXPRESSION (exp, nbytes)x86_cons (exp, nbytes); | ||||
3504 | } | ||||
3505 | |||||
3506 | |||||
3507 | /* Worker to do .byte etc statements. | ||||
3508 | Clobbers input_line_pointer and checks end-of-line. */ | ||||
3509 | |||||
3510 | static void | ||||
3511 | cons_worker (register int nbytes, /* 1=.byte, 2=.word, 4=.long. */ | ||||
3512 | int rva) | ||||
3513 | { | ||||
3514 | int c; | ||||
3515 | expressionS exp; | ||||
3516 | char *stop = NULL((void*)0); | ||||
3517 | char stopc; | ||||
3518 | |||||
3519 | #ifdef md_flush_pending_output | ||||
3520 | md_flush_pending_output (); | ||||
3521 | #endif | ||||
3522 | |||||
3523 | if (flag_mri) | ||||
3524 | stop = mri_comment_field (&stopc); | ||||
3525 | |||||
3526 | if (is_it_end_of_statement ()) | ||||
3527 | { | ||||
3528 | demand_empty_rest_of_line (); | ||||
3529 | if (flag_mri) | ||||
3530 | mri_comment_end (stop, stopc); | ||||
3531 | return; | ||||
3532 | } | ||||
3533 | |||||
3534 | #ifdef TC_ADDRESS_BYTESaddress_bytes | ||||
3535 | if (nbytes == 0) | ||||
3536 | nbytes = TC_ADDRESS_BYTESaddress_bytes (); | ||||
3537 | #endif | ||||
3538 | |||||
3539 | #ifdef md_cons_align | ||||
3540 | md_cons_align (nbytes); | ||||
3541 | #endif | ||||
3542 | |||||
3543 | c = 0; | ||||
3544 | do | ||||
3545 | { | ||||
3546 | #ifdef TC_M68K | ||||
3547 | if (flag_m68k_mri0) | ||||
3548 | parse_mri_cons (&exp, (unsigned int) nbytes); | ||||
3549 | else | ||||
3550 | #endif | ||||
3551 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes)x86_cons (&exp, (unsigned int) nbytes); | ||||
3552 | |||||
3553 | if (rva) | ||||
3554 | { | ||||
3555 | if (exp.X_op == O_symbol) | ||||
3556 | exp.X_op = O_symbol_rva; | ||||
3557 | else | ||||
3558 | as_fatal (_("rva without symbol")("rva without symbol")); | ||||
3559 | } | ||||
3560 | emit_expr (&exp, (unsigned int) nbytes); | ||||
3561 | ++c; | ||||
3562 | } | ||||
3563 | while (*input_line_pointer++ == ','); | ||||
3564 | |||||
3565 | /* In MRI mode, after an odd number of bytes, we must align to an | ||||
3566 | even word boundary, unless the next instruction is a dc.b, ds.b | ||||
3567 | or dcb.b. */ | ||||
3568 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | ||||
3569 | mri_pending_align = 1; | ||||
3570 | |||||
3571 | input_line_pointer--; /* Put terminator back into stream. */ | ||||
3572 | |||||
3573 | demand_empty_rest_of_line (); | ||||
3574 | |||||
3575 | if (flag_mri) | ||||
3576 | mri_comment_end (stop, stopc); | ||||
3577 | } | ||||
3578 | |||||
3579 | void | ||||
3580 | cons (int size) | ||||
3581 | { | ||||
3582 | cons_worker (size, 0); | ||||
3583 | } | ||||
3584 | |||||
3585 | void | ||||
3586 | s_rva (int size) | ||||
3587 | { | ||||
3588 | cons_worker (size, 1); | ||||
3589 | } | ||||
3590 | |||||
3591 | /* Put the contents of expression EXP into the object file using | ||||
3592 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | ||||
3593 | |||||
3594 | void | ||||
3595 | emit_expr (expressionS *exp, unsigned int nbytes) | ||||
3596 | { | ||||
3597 | operatorT op; | ||||
3598 | register char *p; | ||||
3599 | valueT extra_digit = 0; | ||||
3600 | |||||
3601 | /* Don't do anything if we are going to make another pass. */ | ||||
3602 | if (need_pass_2) | ||||
3603 | return; | ||||
3604 | |||||
3605 | dot_value = frag_now_fix (); | ||||
3606 | |||||
3607 | #ifndef NO_LISTING | ||||
3608 | #ifdef OBJ_ELF1 | ||||
3609 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | ||||
3610 | appear as a four byte positive constant in the .line section, | ||||
3611 | followed by a 2 byte 0xffff. Look for that case here. */ | ||||
3612 | { | ||||
3613 | static int dwarf_line = -1; | ||||
3614 | |||||
3615 | if (strcmp (segment_name (now_seg)((now_seg)->name + 0), ".line") != 0) | ||||
3616 | dwarf_line = -1; | ||||
3617 | else if (dwarf_line >= 0 | ||||
3618 | && nbytes == 2 | ||||
3619 | && exp->X_op == O_constant | ||||
3620 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | ||||
3621 | listing_source_line ((unsigned int) dwarf_line); | ||||
3622 | else if (nbytes == 4 | ||||
3623 | && exp->X_op == O_constant | ||||
3624 | && exp->X_add_number >= 0) | ||||
3625 | dwarf_line = exp->X_add_number; | ||||
3626 | else | ||||
3627 | dwarf_line = -1; | ||||
3628 | } | ||||
3629 | |||||
3630 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | ||||
3631 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | ||||
3632 | AT_sibling (0x12) followed by a four byte address of the sibling | ||||
3633 | followed by a 2 byte AT_name (0x38) followed by the name of the | ||||
3634 | file. We look for that case here. */ | ||||
3635 | { | ||||
3636 | static int dwarf_file = 0; | ||||
3637 | |||||
3638 | if (strcmp (segment_name (now_seg)((now_seg)->name + 0), ".debug") != 0) | ||||
3639 | dwarf_file = 0; | ||||
3640 | else if (dwarf_file == 0 | ||||
3641 | && nbytes == 2 | ||||
3642 | && exp->X_op == O_constant | ||||
3643 | && exp->X_add_number == 0x11) | ||||
3644 | dwarf_file = 1; | ||||
3645 | else if (dwarf_file == 1 | ||||
3646 | && nbytes == 2 | ||||
3647 | && exp->X_op == O_constant | ||||
3648 | && exp->X_add_number == 0x12) | ||||
3649 | dwarf_file = 2; | ||||
3650 | else if (dwarf_file == 2 | ||||
3651 | && nbytes == 4) | ||||
3652 | dwarf_file = 3; | ||||
3653 | else if (dwarf_file == 3 | ||||
3654 | && nbytes == 2 | ||||
3655 | && exp->X_op == O_constant | ||||
3656 | && exp->X_add_number == 0x38) | ||||
3657 | dwarf_file = 4; | ||||
3658 | else | ||||
3659 | dwarf_file = 0; | ||||
3660 | |||||
3661 | /* The variable dwarf_file_string tells stringer that the string | ||||
3662 | may be the name of the source file. */ | ||||
3663 | if (dwarf_file == 4) | ||||
3664 | dwarf_file_string = 1; | ||||
3665 | else | ||||
3666 | dwarf_file_string = 0; | ||||
3667 | } | ||||
3668 | #endif | ||||
3669 | #endif | ||||
3670 | |||||
3671 | if (check_eh_frame (exp, &nbytes)) | ||||
3672 | return; | ||||
3673 | |||||
3674 | op = exp->X_op; | ||||
3675 | |||||
3676 | /* Allow `.word 0' in the absolute section. */ | ||||
3677 | if (now_seg == absolute_section((asection *) &bfd_abs_section)) | ||||
3678 | { | ||||
3679 | if (op != O_constant || exp->X_add_number != 0) | ||||
3680 | as_bad (_("attempt to store value in absolute section")("attempt to store value in absolute section")); | ||||
3681 | abs_section_offset += nbytes; | ||||
3682 | return; | ||||
3683 | } | ||||
3684 | |||||
3685 | /* Handle a negative bignum. */ | ||||
3686 | if (op == O_uminus | ||||
3687 | && exp->X_add_number == 0 | ||||
3688 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big | ||||
3689 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | ||||
3690 | { | ||||
3691 | int i; | ||||
3692 | unsigned long carry; | ||||
3693 | |||||
3694 | exp = symbol_get_value_expression (exp->X_add_symbol); | ||||
3695 | |||||
3696 | /* Negate the bignum: one's complement each digit and add 1. */ | ||||
3697 | carry = 1; | ||||
3698 | for (i = 0; i < exp->X_add_number; i++) | ||||
3699 | { | ||||
3700 | unsigned long next; | ||||
3701 | |||||
3702 | next = (((~(generic_bignum[i] & LITTLENUM_MASK(0xFFFF))) | ||||
3703 | & LITTLENUM_MASK(0xFFFF)) | ||||
3704 | + carry); | ||||
3705 | generic_bignum[i] = next & LITTLENUM_MASK(0xFFFF); | ||||
3706 | carry = next >> LITTLENUM_NUMBER_OF_BITS(16); | ||||
3707 | } | ||||
3708 | |||||
3709 | /* We can ignore any carry out, because it will be handled by | ||||
3710 | extra_digit if it is needed. */ | ||||
3711 | |||||
3712 | extra_digit = (valueT) -1; | ||||
3713 | op = O_big; | ||||
3714 | } | ||||
3715 | |||||
3716 | if (op == O_absent || op == O_illegal) | ||||
3717 | { | ||||
3718 | as_warn (_("zero assumed for missing expression")("zero assumed for missing expression")); | ||||
3719 | exp->X_add_number = 0; | ||||
3720 | op = O_constant; | ||||
3721 | } | ||||
3722 | else if (op == O_big && exp->X_add_number <= 0) | ||||
3723 | { | ||||
3724 | as_bad (_("floating point number invalid")("floating point number invalid")); | ||||
3725 | exp->X_add_number = 0; | ||||
3726 | op = O_constant; | ||||
3727 | } | ||||
3728 | else if (op == O_register) | ||||
3729 | { | ||||
3730 | as_warn (_("register value used as expression")("register value used as expression")); | ||||
3731 | op = O_constant; | ||||
3732 | } | ||||
3733 | |||||
3734 | p = frag_more ((int) nbytes); | ||||
3735 | |||||
3736 | #ifndef WORKING_DOT_WORD | ||||
3737 | /* If we have the difference of two symbols in a word, save it on | ||||
3738 | the broken_words list. See the code in write.c. */ | ||||
3739 | if (op == O_subtract && nbytes == 2) | ||||
3740 | { | ||||
3741 | struct broken_word *x; | ||||
3742 | |||||
3743 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | ||||
3744 | x->next_broken_word = broken_words; | ||||
3745 | broken_words = x; | ||||
3746 | x->seg = now_seg; | ||||
3747 | x->subseg = now_subseg; | ||||
3748 | x->frag = frag_now; | ||||
3749 | x->word_goes_here = p; | ||||
3750 | x->dispfrag = 0; | ||||
3751 | x->add = exp->X_add_symbol; | ||||
3752 | x->sub = exp->X_op_symbol; | ||||
3753 | x->addnum = exp->X_add_number; | ||||
3754 | x->added = 0; | ||||
3755 | x->use_jump = 0; | ||||
3756 | new_broken_words++; | ||||
3757 | return; | ||||
3758 | } | ||||
3759 | #endif | ||||
3760 | |||||
3761 | /* If we have an integer, but the number of bytes is too large to | ||||
3762 | pass to md_number_to_chars, handle it as a bignum. */ | ||||
3763 | if (op == O_constant && nbytes > sizeof (valueT)) | ||||
3764 | { | ||||
3765 | extra_digit = exp->X_unsigned ? 0 : -1; | ||||
3766 | convert_to_bignum (exp); | ||||
3767 | op = O_big; | ||||
3768 | } | ||||
3769 | |||||
3770 | if (op == O_constant) | ||||
3771 | { | ||||
3772 | register valueT get; | ||||
3773 | register valueT use; | ||||
3774 | register valueT mask; | ||||
3775 | valueT hibit; | ||||
3776 | register valueT unmask; | ||||
3777 | |||||
3778 | /* JF << of >= number of bits in the object is undefined. In | ||||
3779 | particular SPARC (Sun 4) has problems. */ | ||||
3780 | if (nbytes >= sizeof (valueT)) | ||||
3781 | { | ||||
3782 | mask = 0; | ||||
3783 | if (nbytes > sizeof (valueT)) | ||||
3784 | hibit = 0; | ||||
3785 | else | ||||
3786 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR(8) - 1); | ||||
3787 | } | ||||
3788 | else | ||||
3789 | { | ||||
3790 | /* Don't store these bits. */ | ||||
3791 | mask = ~(valueT) 0 << (BITS_PER_CHAR(8) * nbytes); | ||||
3792 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR(8) - 1); | ||||
3793 | } | ||||
3794 | |||||
3795 | unmask = ~mask; /* Do store these bits. */ | ||||
3796 | |||||
3797 | #ifdef NEVER | ||||
3798 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | ||||
3799 | mask = ~(unmask >> 1); /* Includes sign bit now. */ | ||||
3800 | #endif | ||||
3801 | |||||
3802 | get = exp->X_add_number; | ||||
3803 | use = get & unmask; | ||||
3804 | if ((get & mask) != 0 | ||||
3805 | && ((get & mask) != mask | ||||
3806 | || (get & hibit) == 0)) | ||||
3807 | { /* Leading bits contain both 0s & 1s. */ | ||||
3808 | as_warn (_("value 0x%lx truncated to 0x%lx")("value 0x%lx truncated to 0x%lx"), | ||||
3809 | (unsigned long) get, (unsigned long) use); | ||||
3810 | } | ||||
3811 | /* Put bytes in right order. */ | ||||
3812 | md_number_to_charsnumber_to_chars_littleendian (p, use, (int) nbytes); | ||||
3813 | } | ||||
3814 | else if (op == O_big) | ||||
3815 | { | ||||
3816 | unsigned int size; | ||||
3817 | LITTLENUM_TYPE *nums; | ||||
3818 | |||||
3819 | size = exp->X_add_number * CHARS_PER_LITTLENUM(1 << (1)); | ||||
3820 | if (nbytes < size) | ||||
3821 | { | ||||
3822 | int i = nbytes / CHARS_PER_LITTLENUM(1 << (1)); | ||||
3823 | if (i != 0) | ||||
3824 | { | ||||
3825 | LITTLENUM_TYPE sign = 0; | ||||
3826 | if ((generic_bignum[--i] | ||||
3827 | & (1 << (LITTLENUM_NUMBER_OF_BITS(16) - 1))) != 0) | ||||
3828 | sign = ~(LITTLENUM_TYPE) 0; | ||||
3829 | while (++i < exp->X_add_number) | ||||
3830 | if (generic_bignum[i] != sign) | ||||
3831 | break; | ||||
3832 | } | ||||
3833 | if (i < exp->X_add_number) | ||||
3834 | as_warn (_("bignum truncated to %d bytes")("bignum truncated to %d bytes"), nbytes); | ||||
3835 | size = nbytes; | ||||
3836 | } | ||||
3837 | |||||
3838 | if (nbytes == 1) | ||||
3839 | { | ||||
3840 | md_number_to_charsnumber_to_chars_littleendian (p, (valueT) generic_bignum[0], 1); | ||||
3841 | return; | ||||
3842 | } | ||||
3843 | know (nbytes % CHARS_PER_LITTLENUM == 0); | ||||
3844 | |||||
3845 | if (target_big_endian) | ||||
3846 | { | ||||
3847 | while (nbytes > size) | ||||
3848 | { | ||||
3849 | md_number_to_charsnumber_to_chars_littleendian (p, extra_digit, CHARS_PER_LITTLENUM(1 << (1))); | ||||
3850 | nbytes -= CHARS_PER_LITTLENUM(1 << (1)); | ||||
3851 | p += CHARS_PER_LITTLENUM(1 << (1)); | ||||
3852 | } | ||||
3853 | |||||
3854 | nums = generic_bignum + size / CHARS_PER_LITTLENUM(1 << (1)); | ||||
3855 | while (size >= CHARS_PER_LITTLENUM(1 << (1))) | ||||
3856 | { | ||||
3857 | --nums; | ||||
3858 | md_number_to_charsnumber_to_chars_littleendian (p, (valueT) *nums, CHARS_PER_LITTLENUM(1 << (1))); | ||||
3859 | size -= CHARS_PER_LITTLENUM(1 << (1)); | ||||
3860 | p += CHARS_PER_LITTLENUM(1 << (1)); | ||||
3861 | } | ||||
3862 | } | ||||
3863 | else | ||||
3864 | { | ||||
3865 | nums = generic_bignum; | ||||
3866 | while (size >= CHARS_PER_LITTLENUM(1 << (1))) | ||||
3867 | { | ||||
3868 | md_number_to_charsnumber_to_chars_littleendian (p, (valueT) *nums, CHARS_PER_LITTLENUM(1 << (1))); | ||||
3869 | ++nums; | ||||
3870 | size -= CHARS_PER_LITTLENUM(1 << (1)); | ||||
3871 | p += CHARS_PER_LITTLENUM(1 << (1)); | ||||
3872 | nbytes -= CHARS_PER_LITTLENUM(1 << (1)); | ||||
3873 | } | ||||
3874 | |||||
3875 | while (nbytes >= CHARS_PER_LITTLENUM(1 << (1))) | ||||
3876 | { | ||||
3877 | md_number_to_charsnumber_to_chars_littleendian (p, extra_digit, CHARS_PER_LITTLENUM(1 << (1))); | ||||
3878 | nbytes -= CHARS_PER_LITTLENUM(1 << (1)); | ||||
3879 | p += CHARS_PER_LITTLENUM(1 << (1)); | ||||
3880 | } | ||||
3881 | } | ||||
3882 | } | ||||
3883 | else | ||||
3884 | { | ||||
3885 | memset (p, 0, nbytes); | ||||
3886 | |||||
3887 | /* Now we need to generate a fixS to record the symbol value. */ | ||||
3888 | |||||
3889 | #ifdef TC_CONS_FIX_NEW | ||||
3890 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp)x86_cons_fix_new(frag_now, p - frag_now->fr_literal, nbytes , exp); | ||||
3891 | #else | ||||
3892 | { | ||||
3893 | bfd_reloc_code_real_type r; | ||||
3894 | |||||
3895 | switch (nbytes) | ||||
3896 | { | ||||
3897 | case 1: | ||||
3898 | r = BFD_RELOC_8; | ||||
3899 | break; | ||||
3900 | case 2: | ||||
3901 | r = BFD_RELOC_16; | ||||
3902 | break; | ||||
3903 | case 4: | ||||
3904 | r = BFD_RELOC_32; | ||||
3905 | break; | ||||
3906 | case 8: | ||||
3907 | r = BFD_RELOC_64; | ||||
3908 | break; | ||||
3909 | default: | ||||
3910 | as_bad (_("unsupported BFD relocation size %u")("unsupported BFD relocation size %u"), nbytes); | ||||
3911 | r = BFD_RELOC_32; | ||||
3912 | break; | ||||
3913 | } | ||||
3914 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, | ||||
3915 | 0, r); | ||||
3916 | } | ||||
3917 | #endif | ||||
3918 | } | ||||
3919 | } | ||||
3920 | |||||
3921 | #ifdef BITFIELD_CONS_EXPRESSIONS | ||||
3922 | |||||
3923 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | ||||
3924 | w:x,y:z, where w and y are bitwidths and x and y are values. They | ||||
3925 | then pack them all together. We do a little better in that we allow | ||||
3926 | them in words, longs, etc. and we'll pack them in target byte order | ||||
3927 | for you. | ||||
3928 | |||||
3929 | The rules are: pack least significant bit first, if a field doesn't | ||||
3930 | entirely fit, put it in the next unit. Overflowing the bitfield is | ||||
3931 | explicitly *not* even a warning. The bitwidth should be considered | ||||
3932 | a "mask". | ||||
3933 | |||||
3934 | To use this function the tc-XXX.h file should define | ||||
3935 | BITFIELD_CONS_EXPRESSIONS. */ | ||||
3936 | |||||
3937 | static void | ||||
3938 | parse_bitfield_cons (exp, nbytes) | ||||
3939 | expressionS *exp; | ||||
3940 | unsigned int nbytes; | ||||
3941 | { | ||||
3942 | unsigned int bits_available = BITS_PER_CHAR(8) * nbytes; | ||||
3943 | char *hold = input_line_pointer; | ||||
3944 | |||||
3945 | (void) expression (exp)expr (0, exp, expr_normal); | ||||
3946 | |||||
3947 | if (*input_line_pointer == ':') | ||||
3948 | { | ||||
3949 | /* Bitfields. */ | ||||
3950 | long value = 0; | ||||
3951 | |||||
3952 | for (;;) | ||||
3953 | { | ||||
3954 | unsigned long width; | ||||
3955 | |||||
3956 | if (*input_line_pointer != ':') | ||||
3957 | { | ||||
3958 | input_line_pointer = hold; | ||||
3959 | break; | ||||
3960 | } /* Next piece is not a bitfield. */ | ||||
3961 | |||||
3962 | /* In the general case, we can't allow | ||||
3963 | full expressions with symbol | ||||
3964 | differences and such. The relocation | ||||
3965 | entries for symbols not defined in this | ||||
3966 | assembly would require arbitrary field | ||||
3967 | widths, positions, and masks which most | ||||
3968 | of our current object formats don't | ||||
3969 | support. | ||||
3970 | |||||
3971 | In the specific case where a symbol | ||||
3972 | *is* defined in this assembly, we | ||||
3973 | *could* build fixups and track it, but | ||||
3974 | this could lead to confusion for the | ||||
3975 | backends. I'm lazy. I'll take any | ||||
3976 | SEG_ABSOLUTE. I think that means that | ||||
3977 | you can use a previous .set or | ||||
3978 | .equ type symbol. xoxorich. */ | ||||
3979 | |||||
3980 | if (exp->X_op == O_absent) | ||||
3981 | { | ||||
3982 | as_warn (_("using a bit field width of zero")("using a bit field width of zero")); | ||||
3983 | exp->X_add_number = 0; | ||||
3984 | exp->X_op = O_constant; | ||||
3985 | } /* Implied zero width bitfield. */ | ||||
3986 | |||||
3987 | if (exp->X_op != O_constant) | ||||
3988 | { | ||||
3989 | *input_line_pointer = '\0'; | ||||
3990 | as_bad (_("field width \"%s\" too complex for a bitfield")("field width \"%s\" too complex for a bitfield"), hold); | ||||
3991 | *input_line_pointer = ':'; | ||||
3992 | demand_empty_rest_of_line (); | ||||
3993 | return; | ||||
3994 | } /* Too complex. */ | ||||
3995 | |||||
3996 | if ((width = exp->X_add_number) > (BITS_PER_CHAR(8) * nbytes)) | ||||
3997 | { | ||||
3998 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits")("field width %lu too big to fit in %d bytes: truncated to %d bits" ), | ||||
3999 | width, nbytes, (BITS_PER_CHAR(8) * nbytes)); | ||||
4000 | width = BITS_PER_CHAR(8) * nbytes; | ||||
4001 | } /* Too big. */ | ||||
4002 | |||||
4003 | if (width > bits_available) | ||||
4004 | { | ||||
4005 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | ||||
4006 | input_line_pointer = hold; | ||||
4007 | exp->X_add_number = value; | ||||
4008 | break; | ||||
4009 | } /* Won't fit. */ | ||||
4010 | |||||
4011 | /* Skip ':'. */ | ||||
4012 | hold = ++input_line_pointer; | ||||
4013 | |||||
4014 | (void) expression (exp)expr (0, exp, expr_normal); | ||||
4015 | if (exp->X_op != O_constant) | ||||
4016 | { | ||||
4017 | char cache = *input_line_pointer; | ||||
4018 | |||||
4019 | *input_line_pointer = '\0'; | ||||
4020 | as_bad (_("field value \"%s\" too complex for a bitfield")("field value \"%s\" too complex for a bitfield"), hold); | ||||
4021 | *input_line_pointer = cache; | ||||
4022 | demand_empty_rest_of_line (); | ||||
4023 | return; | ||||
4024 | } /* Too complex. */ | ||||
4025 | |||||
4026 | value |= ((~(-1 << width) & exp->X_add_number) | ||||
4027 | << ((BITS_PER_CHAR(8) * nbytes) - bits_available)); | ||||
4028 | |||||
4029 | if ((bits_available -= width) == 0 | ||||
4030 | || is_it_end_of_statement () | ||||
4031 | || *input_line_pointer != ',') | ||||
4032 | { | ||||
4033 | break; | ||||
4034 | } /* All the bitfields we're gonna get. */ | ||||
4035 | |||||
4036 | hold = ++input_line_pointer; | ||||
4037 | (void) expression (exp)expr (0, exp, expr_normal); | ||||
4038 | } | ||||
4039 | |||||
4040 | exp->X_add_number = value; | ||||
4041 | exp->X_op = O_constant; | ||||
4042 | exp->X_unsigned = 1; | ||||
4043 | } | ||||
4044 | } | ||||
4045 | |||||
4046 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | ||||
4047 | |||||
4048 | /* Handle an MRI style string expression. */ | ||||
4049 | |||||
4050 | #ifdef TC_M68K | ||||
4051 | static void | ||||
4052 | parse_mri_cons (exp, nbytes) | ||||
4053 | expressionS *exp; | ||||
4054 | unsigned int nbytes; | ||||
4055 | { | ||||
4056 | if (*input_line_pointer != '\'' | ||||
4057 | && (input_line_pointer[1] != '\'' | ||||
4058 | || (*input_line_pointer != 'A' | ||||
4059 | && *input_line_pointer != 'E'))) | ||||
4060 | TC_PARSE_CONS_EXPRESSION (exp, nbytes)x86_cons (exp, nbytes); | ||||
4061 | else | ||||
4062 | { | ||||
4063 | unsigned int scan; | ||||
4064 | unsigned int result = 0; | ||||
4065 | |||||
4066 | /* An MRI style string. Cut into as many bytes as will fit into | ||||
4067 | a nbyte chunk, left justify if necessary, and separate with | ||||
4068 | commas so we can try again later. */ | ||||
4069 | if (*input_line_pointer == 'A') | ||||
4070 | ++input_line_pointer; | ||||
4071 | else if (*input_line_pointer == 'E') | ||||
4072 | { | ||||
4073 | as_bad (_("EBCDIC constants are not supported")("EBCDIC constants are not supported")); | ||||
4074 | ++input_line_pointer; | ||||
4075 | } | ||||
4076 | |||||
4077 | input_line_pointer++; | ||||
4078 | for (scan = 0; scan < nbytes; scan++) | ||||
4079 | { | ||||
4080 | if (*input_line_pointer == '\'') | ||||
4081 | { | ||||
4082 | if (input_line_pointer[1] == '\'') | ||||
4083 | { | ||||
4084 | input_line_pointer++; | ||||
4085 | } | ||||
4086 | else | ||||
4087 | break; | ||||
4088 | } | ||||
4089 | result = (result << 8) | (*input_line_pointer++); | ||||
4090 | } | ||||
4091 | |||||
4092 | /* Left justify. */ | ||||
4093 | while (scan < nbytes) | ||||
4094 | { | ||||
4095 | result <<= 8; | ||||
4096 | scan++; | ||||
4097 | } | ||||
4098 | |||||
4099 | /* Create correct expression. */ | ||||
4100 | exp->X_op = O_constant; | ||||
4101 | exp->X_add_number = result; | ||||
4102 | |||||
4103 | /* Fake it so that we can read the next char too. */ | ||||
4104 | if (input_line_pointer[0] != '\'' || | ||||
4105 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | ||||
4106 | { | ||||
4107 | input_line_pointer -= 2; | ||||
4108 | input_line_pointer[0] = ','; | ||||
4109 | input_line_pointer[1] = '\''; | ||||
4110 | } | ||||
4111 | else | ||||
4112 | input_line_pointer++; | ||||
4113 | } | ||||
4114 | } | ||||
4115 | #endif /* TC_M68K */ | ||||
4116 | |||||
4117 | #ifdef REPEAT_CONS_EXPRESSIONS | ||||
4118 | |||||
4119 | /* Parse a repeat expression for cons. This is used by the MIPS | ||||
4120 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | ||||
4121 | object file COUNT times. | ||||
4122 | |||||
4123 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | ||||
4124 | |||||
4125 | static void | ||||
4126 | parse_repeat_cons (exp, nbytes) | ||||
4127 | expressionS *exp; | ||||
4128 | unsigned int nbytes; | ||||
4129 | { | ||||
4130 | expressionS count; | ||||
4131 | register int i; | ||||
4132 | |||||
4133 | expression (exp)expr (0, exp, expr_normal); | ||||
4134 | |||||
4135 | if (*input_line_pointer != ':') | ||||
4136 | { | ||||
4137 | /* No repeat count. */ | ||||
4138 | return; | ||||
4139 | } | ||||
4140 | |||||
4141 | ++input_line_pointer; | ||||
4142 | expression (&count)expr (0, &count, expr_normal); | ||||
4143 | if (count.X_op != O_constant | ||||
4144 | || count.X_add_number <= 0) | ||||
4145 | { | ||||
4146 | as_warn (_("unresolvable or nonpositive repeat count; using 1")("unresolvable or nonpositive repeat count; using 1")); | ||||
4147 | return; | ||||
4148 | } | ||||
4149 | |||||
4150 | /* The cons function is going to output this expression once. So we | ||||
4151 | output it count - 1 times. */ | ||||
4152 | for (i = count.X_add_number - 1; i > 0; i--) | ||||
4153 | emit_expr (exp, nbytes); | ||||
4154 | } | ||||
4155 | |||||
4156 | #endif /* REPEAT_CONS_EXPRESSIONS */ | ||||
4157 | |||||
4158 | /* Parse a floating point number represented as a hex constant. This | ||||
4159 | permits users to specify the exact bits they want in the floating | ||||
4160 | point number. */ | ||||
4161 | |||||
4162 | static int | ||||
4163 | hex_float (int float_type, char *bytes) | ||||
4164 | { | ||||
4165 | int length; | ||||
4166 | int i; | ||||
4167 | |||||
4168 | switch (float_type) | ||||
4169 | { | ||||
4170 | case 'f': | ||||
4171 | case 'F': | ||||
4172 | case 's': | ||||
4173 | case 'S': | ||||
4174 | length = 4; | ||||
4175 | break; | ||||
4176 | |||||
4177 | case 'd': | ||||
4178 | case 'D': | ||||
4179 | case 'r': | ||||
4180 | case 'R': | ||||
4181 | length = 8; | ||||
4182 | break; | ||||
4183 | |||||
4184 | case 'x': | ||||
4185 | case 'X': | ||||
4186 | length = 12; | ||||
4187 | break; | ||||
4188 | |||||
4189 | case 'p': | ||||
4190 | case 'P': | ||||
4191 | length = 12; | ||||
4192 | break; | ||||
4193 | |||||
4194 | default: | ||||
4195 | as_bad (_("unknown floating type type '%c'")("unknown floating type type '%c'"), float_type); | ||||
4196 | return -1; | ||||
4197 | } | ||||
4198 | |||||
4199 | /* It would be nice if we could go through expression to parse the | ||||
4200 | hex constant, but if we get a bignum it's a pain to sort it into | ||||
4201 | the buffer correctly. */ | ||||
4202 | i = 0; | ||||
4203 | while (hex_p (*input_line_pointer)(((unsigned int) _hex_value[(unsigned char) (*input_line_pointer )]) != 99) || *input_line_pointer == '_') | ||||
4204 | { | ||||
4205 | int d; | ||||
4206 | |||||
4207 | /* The MRI assembler accepts arbitrary underscores strewn about | ||||
4208 | through the hex constant, so we ignore them as well. */ | ||||
4209 | if (*input_line_pointer == '_') | ||||
4210 | { | ||||
4211 | ++input_line_pointer; | ||||
4212 | continue; | ||||
4213 | } | ||||
4214 | |||||
4215 | if (i >= length) | ||||
4216 | { | ||||
4217 | as_warn (_("floating point constant too large")("floating point constant too large")); | ||||
4218 | return -1; | ||||
4219 | } | ||||
4220 | d = hex_value (*input_line_pointer)((unsigned int) _hex_value[(unsigned char) (*input_line_pointer )]) << 4; | ||||
4221 | ++input_line_pointer; | ||||
4222 | while (*input_line_pointer == '_') | ||||
4223 | ++input_line_pointer; | ||||
4224 | if (hex_p (*input_line_pointer)(((unsigned int) _hex_value[(unsigned char) (*input_line_pointer )]) != 99)) | ||||
4225 | { | ||||
4226 | d += hex_value (*input_line_pointer)((unsigned int) _hex_value[(unsigned char) (*input_line_pointer )]); | ||||
4227 | ++input_line_pointer; | ||||
4228 | } | ||||
4229 | if (target_big_endian) | ||||
4230 | bytes[i] = d; | ||||
4231 | else | ||||
4232 | bytes[length - i - 1] = d; | ||||
4233 | ++i; | ||||
4234 | } | ||||
4235 | |||||
4236 | if (i < length) | ||||
4237 | { | ||||
4238 | if (target_big_endian) | ||||
4239 | memset (bytes + i, 0, length - i); | ||||
4240 | else | ||||
4241 | memset (bytes, 0, length - i); | ||||
4242 | } | ||||
4243 | |||||
4244 | return length; | ||||
4245 | } | ||||
4246 | |||||
4247 | /* float_cons() | ||||
4248 | |||||
4249 | CONStruct some more frag chars of .floats .ffloats etc. | ||||
4250 | Makes 0 or more new frags. | ||||
4251 | If need_pass_2 == 1, no frags are emitted. | ||||
4252 | This understands only floating literals, not expressions. Sorry. | ||||
4253 | |||||
4254 | A floating constant is defined by atof_generic(), except it is preceded | ||||
4255 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | ||||
4256 | reading, I decided to be incompatible. This always tries to give you | ||||
4257 | rounded bits to the precision of the pseudo-op. Former AS did premature | ||||
4258 | truncation, restored noisy bits instead of trailing 0s AND gave you | ||||
4259 | a choice of 2 flavours of noise according to which of 2 floating-point | ||||
4260 | scanners you directed AS to use. | ||||
4261 | |||||
4262 | In: input_line_pointer->whitespace before, or '0' of flonum. */ | ||||
4263 | |||||
4264 | void | ||||
4265 | float_cons (/* Clobbers input_line-pointer, checks end-of-line. */ | ||||
4266 | register int float_type /* 'f':.ffloat ... 'F':.float ... */) | ||||
4267 | { | ||||
4268 | register char *p; | ||||
4269 | int length; /* Number of chars in an object. */ | ||||
4270 | register char *err; /* Error from scanning floating literal. */ | ||||
4271 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT(16)]; | ||||
4272 | |||||
4273 | if (is_it_end_of_statement ()) | ||||
4274 | { | ||||
4275 | demand_empty_rest_of_line (); | ||||
4276 | return; | ||||
4277 | } | ||||
4278 | |||||
4279 | #ifdef md_flush_pending_output | ||||
4280 | md_flush_pending_output (); | ||||
4281 | #endif | ||||
4282 | |||||
4283 | do | ||||
4284 | { | ||||
4285 | /* input_line_pointer->1st char of a flonum (we hope!). */ | ||||
4286 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
4287 | |||||
4288 | /* Skip any 0{letter} that may be present. Don't even check if the | ||||
4289 | letter is legal. Someone may invent a "z" format and this routine | ||||
4290 | has no use for such information. Lusers beware: you get | ||||
4291 | diagnostics if your input is ill-conditioned. */ | ||||
4292 | if (input_line_pointer[0] == '0' | ||||
4293 | && ISALPHA (input_line_pointer[1])(_sch_istable[(input_line_pointer[1]) & 0xff] & (unsigned short)(_sch_isalpha))) | ||||
4294 | input_line_pointer += 2; | ||||
4295 | |||||
4296 | /* Accept :xxxx, where the x's are hex digits, for a floating | ||||
4297 | point with the exact digits specified. */ | ||||
4298 | if (input_line_pointer[0] == ':') | ||||
4299 | { | ||||
4300 | ++input_line_pointer; | ||||
4301 | length = hex_float (float_type, temp); | ||||
4302 | if (length < 0) | ||||
4303 | { | ||||
4304 | ignore_rest_of_line (); | ||||
4305 | return; | ||||
4306 | } | ||||
4307 | } | ||||
4308 | else | ||||
4309 | { | ||||
4310 | err = md_atof (float_type, temp, &length); | ||||
4311 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | ||||
4312 | know (length > 0); | ||||
4313 | if (err) | ||||
4314 | { | ||||
4315 | as_bad (_("bad floating literal: %s")("bad floating literal: %s"), err); | ||||
4316 | ignore_rest_of_line (); | ||||
4317 | return; | ||||
4318 | } | ||||
4319 | } | ||||
4320 | |||||
4321 | if (!need_pass_2) | ||||
4322 | { | ||||
4323 | int count; | ||||
4324 | |||||
4325 | count = 1; | ||||
4326 | |||||
4327 | #ifdef REPEAT_CONS_EXPRESSIONS | ||||
4328 | if (*input_line_pointer == ':') | ||||
4329 | { | ||||
4330 | expressionS count_exp; | ||||
4331 | |||||
4332 | ++input_line_pointer; | ||||
4333 | expression (&count_exp)expr (0, &count_exp, expr_normal); | ||||
4334 | |||||
4335 | if (count_exp.X_op != O_constant | ||||
4336 | || count_exp.X_add_number <= 0) | ||||
4337 | as_warn (_("unresolvable or nonpositive repeat count; using 1")("unresolvable or nonpositive repeat count; using 1")); | ||||
4338 | else | ||||
4339 | count = count_exp.X_add_number; | ||||
4340 | } | ||||
4341 | #endif | ||||
4342 | |||||
4343 | while (--count >= 0) | ||||
4344 | { | ||||
4345 | p = frag_more (length); | ||||
4346 | memcpy (p, temp, (unsigned int) length); | ||||
4347 | } | ||||
4348 | } | ||||
4349 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
4350 | } | ||||
4351 | while (*input_line_pointer++ == ','); | ||||
4352 | |||||
4353 | /* Put terminator back into stream. */ | ||||
4354 | --input_line_pointer; | ||||
4355 | demand_empty_rest_of_line (); | ||||
4356 | } | ||||
4357 | |||||
4358 | /* Return the size of a LEB128 value. */ | ||||
4359 | |||||
4360 | static inline int | ||||
4361 | sizeof_sleb128 (offsetT value) | ||||
4362 | { | ||||
4363 | register int size = 0; | ||||
4364 | register unsigned byte; | ||||
4365 | |||||
4366 | do | ||||
4367 | { | ||||
4368 | byte = (value & 0x7f); | ||||
4369 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | ||||
4370 | Fortunately, we can structure things so that the extra work reduces | ||||
4371 | to a noop on systems that do things "properly". */ | ||||
4372 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | ||||
4373 | size += 1; | ||||
4374 | } | ||||
4375 | while (!(((value == 0) && ((byte & 0x40) == 0)) | ||||
4376 | || ((value == -1) && ((byte & 0x40) != 0)))); | ||||
4377 | |||||
4378 | return size; | ||||
4379 | } | ||||
4380 | |||||
4381 | static inline int | ||||
4382 | sizeof_uleb128 (valueT value) | ||||
4383 | { | ||||
4384 | register int size = 0; | ||||
4385 | register unsigned byte; | ||||
4386 | |||||
4387 | do | ||||
4388 | { | ||||
4389 | byte = (value & 0x7f); | ||||
4390 | value >>= 7; | ||||
4391 | size += 1; | ||||
4392 | } | ||||
4393 | while (value != 0); | ||||
4394 | |||||
4395 | return size; | ||||
4396 | } | ||||
4397 | |||||
4398 | int | ||||
4399 | sizeof_leb128 (valueT value, int sign) | ||||
4400 | { | ||||
4401 | if (sign) | ||||
4402 | return sizeof_sleb128 ((offsetT) value); | ||||
4403 | else | ||||
4404 | return sizeof_uleb128 (value); | ||||
4405 | } | ||||
4406 | |||||
4407 | /* Output a LEB128 value. */ | ||||
4408 | |||||
4409 | static inline int | ||||
4410 | output_sleb128 (char *p, offsetT value) | ||||
4411 | { | ||||
4412 | register char *orig = p; | ||||
4413 | register int more; | ||||
4414 | |||||
4415 | do | ||||
4416 | { | ||||
4417 | unsigned byte = (value & 0x7f); | ||||
4418 | |||||
4419 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | ||||
4420 | Fortunately, we can structure things so that the extra work reduces | ||||
4421 | to a noop on systems that do things "properly". */ | ||||
4422 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | ||||
4423 | |||||
4424 | more = !((((value == 0) && ((byte & 0x40) == 0)) | ||||
4425 | || ((value == -1) && ((byte & 0x40) != 0)))); | ||||
4426 | if (more) | ||||
4427 | byte |= 0x80; | ||||
4428 | |||||
4429 | *p++ = byte; | ||||
4430 | } | ||||
4431 | while (more); | ||||
4432 | |||||
4433 | return p - orig; | ||||
4434 | } | ||||
4435 | |||||
4436 | static inline int | ||||
4437 | output_uleb128 (char *p, valueT value) | ||||
4438 | { | ||||
4439 | char *orig = p; | ||||
4440 | |||||
4441 | do | ||||
4442 | { | ||||
4443 | unsigned byte = (value & 0x7f); | ||||
4444 | value >>= 7; | ||||
4445 | if (value != 0) | ||||
4446 | /* More bytes to follow. */ | ||||
4447 | byte |= 0x80; | ||||
4448 | |||||
4449 | *p++ = byte; | ||||
4450 | } | ||||
4451 | while (value != 0); | ||||
4452 | |||||
4453 | return p - orig; | ||||
4454 | } | ||||
4455 | |||||
4456 | int | ||||
4457 | output_leb128 (char *p, valueT value, int sign) | ||||
4458 | { | ||||
4459 | if (sign) | ||||
4460 | return output_sleb128 (p, (offsetT) value); | ||||
4461 | else | ||||
4462 | return output_uleb128 (p, value); | ||||
4463 | } | ||||
4464 | |||||
4465 | /* Do the same for bignums. We combine sizeof with output here in that | ||||
4466 | we don't output for NULL values of P. It isn't really as critical as | ||||
4467 | for "normal" values that this be streamlined. */ | ||||
4468 | |||||
4469 | static inline int | ||||
4470 | output_big_sleb128 (char *p, LITTLENUM_TYPE *bignum, int size) | ||||
4471 | { | ||||
4472 | char *orig = p; | ||||
4473 | valueT val = 0; | ||||
4474 | int loaded = 0; | ||||
4475 | unsigned byte; | ||||
4476 | |||||
4477 | /* Strip leading sign extensions off the bignum. */ | ||||
4478 | while (size > 1 | ||||
4479 | && bignum[size - 1] == LITTLENUM_MASK(0xFFFF) | ||||
4480 | && bignum[size - 2] > LITTLENUM_MASK(0xFFFF) / 2) | ||||
4481 | size--; | ||||
4482 | |||||
4483 | do | ||||
4484 | { | ||||
4485 | /* OR in the next part of the littlenum. */ | ||||
4486 | val |= (*bignum << loaded); | ||||
4487 | loaded += LITTLENUM_NUMBER_OF_BITS(16); | ||||
4488 | size--; | ||||
4489 | bignum++; | ||||
4490 | |||||
4491 | /* Add bytes until there are less than 7 bits left in VAL | ||||
4492 | or until every non-sign bit has been written. */ | ||||
4493 | do | ||||
4494 | { | ||||
4495 | byte = val & 0x7f; | ||||
4496 | loaded -= 7; | ||||
4497 | val >>= 7; | ||||
4498 | if (size
| ||||
4499 | || val != ((byte & 0x40) == 0 ? 0 : ((valueT) 1 << loaded) - 1)) | ||||
4500 | byte |= 0x80; | ||||
4501 | |||||
4502 | if (orig
| ||||
4503 | *p = byte; | ||||
4504 | p++; | ||||
4505 | } | ||||
4506 | while ((byte & 0x80) != 0 && loaded >= 7); | ||||
4507 | } | ||||
4508 | while (size
| ||||
4509 | |||||
4510 | /* Mop up any left-over bits (of which there will be less than 7). */ | ||||
4511 | if ((byte & 0x80) != 0) | ||||
4512 | { | ||||
4513 | /* Sign-extend VAL. */ | ||||
4514 | if (val & (1 << (loaded - 1))) | ||||
4515 | val |= ~0 << loaded; | ||||
| |||||
4516 | if (orig) | ||||
4517 | *p = val & 0x7f; | ||||
4518 | p++; | ||||
4519 | } | ||||
4520 | |||||
4521 | return p - orig; | ||||
4522 | } | ||||
4523 | |||||
4524 | static inline int | ||||
4525 | output_big_uleb128 (char *p, LITTLENUM_TYPE *bignum, int size) | ||||
4526 | { | ||||
4527 | char *orig = p; | ||||
4528 | valueT val = 0; | ||||
4529 | int loaded = 0; | ||||
4530 | unsigned byte; | ||||
4531 | |||||
4532 | /* Strip leading zeros off the bignum. */ | ||||
4533 | /* XXX: Is this needed? */ | ||||
4534 | while (size > 0 && bignum[size - 1] == 0) | ||||
4535 | size--; | ||||
4536 | |||||
4537 | do | ||||
4538 | { | ||||
4539 | if (loaded < 7 && size > 0) | ||||
4540 | { | ||||
4541 | val |= (*bignum << loaded); | ||||
4542 | loaded += 8 * CHARS_PER_LITTLENUM(1 << (1)); | ||||
4543 | size--; | ||||
4544 | bignum++; | ||||
4545 | } | ||||
4546 | |||||
4547 | byte = val & 0x7f; | ||||
4548 | loaded -= 7; | ||||
4549 | val >>= 7; | ||||
4550 | |||||
4551 | if (size > 0 || val) | ||||
4552 | byte |= 0x80; | ||||
4553 | |||||
4554 | if (orig) | ||||
4555 | *p = byte; | ||||
4556 | p++; | ||||
4557 | } | ||||
4558 | while (byte & 0x80); | ||||
4559 | |||||
4560 | return p - orig; | ||||
4561 | } | ||||
4562 | |||||
4563 | static int | ||||
4564 | output_big_leb128 (char *p, LITTLENUM_TYPE *bignum, int size, int sign) | ||||
4565 | { | ||||
4566 | if (sign) | ||||
4567 | return output_big_sleb128 (p, bignum, size); | ||||
4568 | else | ||||
4569 | return output_big_uleb128 (p, bignum, size); | ||||
4570 | } | ||||
4571 | |||||
4572 | /* Generate the appropriate fragments for a given expression to emit a | ||||
4573 | leb128 value. */ | ||||
4574 | |||||
4575 | static void | ||||
4576 | emit_leb128_expr (expressionS *exp, int sign) | ||||
4577 | { | ||||
4578 | operatorT op = exp->X_op; | ||||
4579 | unsigned int nbytes; | ||||
4580 | |||||
4581 | if (op == O_absent || op == O_illegal) | ||||
4582 | { | ||||
4583 | as_warn (_("zero assumed for missing expression")("zero assumed for missing expression")); | ||||
4584 | exp->X_add_number = 0; | ||||
4585 | op = O_constant; | ||||
4586 | } | ||||
4587 | else if (op == O_big && exp->X_add_number <= 0) | ||||
4588 | { | ||||
4589 | as_bad (_("floating point number invalid")("floating point number invalid")); | ||||
4590 | exp->X_add_number = 0; | ||||
4591 | op = O_constant; | ||||
4592 | } | ||||
4593 | else if (op
| ||||
4594 | { | ||||
4595 | as_warn (_("register value used as expression")("register value used as expression")); | ||||
4596 | op = O_constant; | ||||
4597 | } | ||||
4598 | else if (op
| ||||
4599 | && sign | ||||
4600 | && (exp->X_add_number < 0) != !exp->X_unsigned) | ||||
4601 | { | ||||
4602 | /* We're outputting a signed leb128 and the sign of X_add_number | ||||
4603 | doesn't reflect the sign of the original value. Convert EXP | ||||
4604 | to a correctly-extended bignum instead. */ | ||||
4605 | convert_to_bignum (exp); | ||||
4606 | op = O_big; | ||||
4607 | } | ||||
4608 | |||||
4609 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is | ||||
4610 | a signal that this is leb128 data. It shouldn't optimize this away. */ | ||||
4611 | nbytes = (unsigned int) -1; | ||||
4612 | if (check_eh_frame (exp, &nbytes)) | ||||
4613 | abort ()as_abort ("/usr/src/gnu/usr.bin/binutils-2.17/gas/read.c", 4613 , __PRETTY_FUNCTION__); | ||||
4614 | |||||
4615 | /* Let the backend know that subsequent data may be byte aligned. */ | ||||
4616 | #ifdef md_cons_align | ||||
4617 | md_cons_align (1); | ||||
4618 | #endif | ||||
4619 | |||||
4620 | if (op
| ||||
4621 | { | ||||
4622 | /* If we've got a constant, emit the thing directly right now. */ | ||||
4623 | |||||
4624 | valueT value = exp->X_add_number; | ||||
4625 | int size; | ||||
4626 | char *p; | ||||
4627 | |||||
4628 | size = sizeof_leb128 (value, sign); | ||||
4629 | p = frag_more (size); | ||||
4630 | output_leb128 (p, value, sign); | ||||
4631 | } | ||||
4632 | else if (op
| ||||
4633 | { | ||||
4634 | /* O_big is a different sort of constant. */ | ||||
4635 | |||||
4636 | int size; | ||||
4637 | char *p; | ||||
4638 | |||||
4639 | size = output_big_leb128 (NULL((void*)0), generic_bignum, exp->X_add_number, sign); | ||||
4640 | p = frag_more (size); | ||||
4641 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | ||||
4642 | } | ||||
4643 | else | ||||
4644 | { | ||||
4645 | /* Otherwise, we have to create a variable sized fragment and | ||||
4646 | resolve things later. */ | ||||
4647 | |||||
4648 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, | ||||
4649 | make_expr_symbol (exp), 0, (char *) NULL((void*)0)); | ||||
4650 | } | ||||
4651 | } | ||||
4652 | |||||
4653 | /* Parse the .sleb128 and .uleb128 pseudos. */ | ||||
4654 | |||||
4655 | void | ||||
4656 | s_leb128 (int sign) | ||||
4657 | { | ||||
4658 | expressionS exp; | ||||
4659 | |||||
4660 | #ifdef md_flush_pending_output | ||||
4661 | md_flush_pending_output (); | ||||
4662 | #endif | ||||
4663 | |||||
4664 | do | ||||
4665 | { | ||||
4666 | expression (&exp)expr (0, &exp, expr_normal); | ||||
4667 | emit_leb128_expr (&exp, sign); | ||||
| |||||
4668 | } | ||||
4669 | while (*input_line_pointer++ == ','); | ||||
4670 | |||||
4671 | input_line_pointer--; | ||||
4672 | demand_empty_rest_of_line (); | ||||
4673 | } | ||||
4674 | |||||
4675 | /* We read 0 or more ',' separated, double-quoted strings. | ||||
4676 | Caller should have checked need_pass_2 is FALSE because we don't | ||||
4677 | check it. */ | ||||
4678 | |||||
4679 | void | ||||
4680 | stringer (/* Worker to do .ascii etc statements. */ | ||||
4681 | /* Checks end-of-line. */ | ||||
4682 | register int append_zero /* 0: don't append '\0', else 1. */) | ||||
4683 | { | ||||
4684 | register unsigned int c; | ||||
4685 | char *start; | ||||
4686 | |||||
4687 | #ifdef md_flush_pending_output | ||||
4688 | md_flush_pending_output (); | ||||
4689 | #endif | ||||
4690 | |||||
4691 | /* The following awkward logic is to parse ZERO or more strings, | ||||
4692 | comma separated. Recall a string expression includes spaces | ||||
4693 | before the opening '\"' and spaces after the closing '\"'. | ||||
4694 | We fake a leading ',' if there is (supposed to be) | ||||
4695 | a 1st, expression. We keep demanding expressions for each ','. */ | ||||
4696 | if (is_it_end_of_statement ()) | ||||
4697 | { | ||||
4698 | c = 0; /* Skip loop. */ | ||||
4699 | ++input_line_pointer; /* Compensate for end of loop. */ | ||||
4700 | } | ||||
4701 | else | ||||
4702 | { | ||||
4703 | c = ','; /* Do loop. */ | ||||
4704 | } | ||||
4705 | /* If we have been switched into the abs_section then we | ||||
4706 | will not have an obstack onto which we can hang strings. */ | ||||
4707 | if (now_seg == absolute_section((asection *) &bfd_abs_section)) | ||||
4708 | { | ||||
4709 | as_bad (_("strings must be placed into a section")("strings must be placed into a section")); | ||||
4710 | c = 0; | ||||
4711 | ignore_rest_of_line (); | ||||
4712 | } | ||||
4713 | |||||
4714 | while (c == ',' || c == '<' || c == '"') | ||||
4715 | { | ||||
4716 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
4717 | switch (*input_line_pointer) | ||||
4718 | { | ||||
4719 | case '\"': | ||||
4720 | ++input_line_pointer; /*->1st char of string. */ | ||||
4721 | start = input_line_pointer; | ||||
4722 | while (is_a_char (c = next_char_of_string ())(((unsigned) (c = next_char_of_string ())) <= (0xff))) | ||||
4723 | { | ||||
4724 | FRAG_APPEND_1_CHAR (c)frag_append_1_char (c); | ||||
4725 | } | ||||
4726 | if (append_zero) | ||||
4727 | { | ||||
4728 | FRAG_APPEND_1_CHAR (0)frag_append_1_char (0); | ||||
4729 | } | ||||
4730 | know (input_line_pointer[-1] == '\"'); | ||||
4731 | |||||
4732 | #ifndef NO_LISTING | ||||
4733 | #ifdef OBJ_ELF1 | ||||
4734 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | ||||
4735 | will emit .string with a filename in the .debug section | ||||
4736 | after a sequence of constants. See the comment in | ||||
4737 | emit_expr for the sequence. emit_expr will set | ||||
4738 | dwarf_file_string to non-zero if this string might be a | ||||
4739 | source file name. */ | ||||
4740 | if (strcmp (segment_name (now_seg)((now_seg)->name + 0), ".debug") != 0) | ||||
4741 | dwarf_file_string = 0; | ||||
4742 | else if (dwarf_file_string) | ||||
4743 | { | ||||
4744 | c = input_line_pointer[-1]; | ||||
4745 | input_line_pointer[-1] = '\0'; | ||||
4746 | listing_source_file (start); | ||||
4747 | input_line_pointer[-1] = c; | ||||
4748 | } | ||||
4749 | #endif | ||||
4750 | #endif | ||||
4751 | |||||
4752 | break; | ||||
4753 | case '<': | ||||
4754 | input_line_pointer++; | ||||
4755 | c = get_single_number (); | ||||
4756 | FRAG_APPEND_1_CHAR (c)frag_append_1_char (c); | ||||
4757 | if (*input_line_pointer != '>') | ||||
4758 | { | ||||
4759 | as_bad (_("expected <nn>")("expected <nn>")); | ||||
4760 | } | ||||
4761 | input_line_pointer++; | ||||
4762 | break; | ||||
4763 | case ',': | ||||
4764 | input_line_pointer++; | ||||
4765 | break; | ||||
4766 | } | ||||
4767 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
4768 | c = *input_line_pointer; | ||||
4769 | } | ||||
4770 | |||||
4771 | demand_empty_rest_of_line (); | ||||
4772 | } /* stringer() */ | ||||
4773 | |||||
4774 | /* FIXME-SOMEDAY: I had trouble here on characters with the | ||||
4775 | high bits set. We'll probably also have trouble with | ||||
4776 | multibyte chars, wide chars, etc. Also be careful about | ||||
4777 | returning values bigger than 1 byte. xoxorich. */ | ||||
4778 | |||||
4779 | unsigned int | ||||
4780 | next_char_of_string (void) | ||||
4781 | { | ||||
4782 | register unsigned int c; | ||||
4783 | |||||
4784 | c = *input_line_pointer++ & CHAR_MASK(0xff); | ||||
4785 | switch (c) | ||||
4786 | { | ||||
4787 | case '\"': | ||||
4788 | c = NOT_A_CHAR((0xff)+1); | ||||
4789 | break; | ||||
4790 | |||||
4791 | case '\n': | ||||
4792 | as_warn (_("unterminated string; newline inserted")("unterminated string; newline inserted")); | ||||
4793 | bump_line_counters (); | ||||
4794 | break; | ||||
4795 | |||||
4796 | #ifndef NO_STRING_ESCAPES | ||||
4797 | case '\\': | ||||
4798 | switch (c = *input_line_pointer++) | ||||
4799 | { | ||||
4800 | case 'b': | ||||
4801 | c = '\b'; | ||||
4802 | break; | ||||
4803 | |||||
4804 | case 'f': | ||||
4805 | c = '\f'; | ||||
4806 | break; | ||||
4807 | |||||
4808 | case 'n': | ||||
4809 | c = '\n'; | ||||
4810 | break; | ||||
4811 | |||||
4812 | case 'r': | ||||
4813 | c = '\r'; | ||||
4814 | break; | ||||
4815 | |||||
4816 | case 't': | ||||
4817 | c = '\t'; | ||||
4818 | break; | ||||
4819 | |||||
4820 | case 'v': | ||||
4821 | c = '\013'; | ||||
4822 | break; | ||||
4823 | |||||
4824 | case '\\': | ||||
4825 | case '"': | ||||
4826 | break; /* As itself. */ | ||||
4827 | |||||
4828 | case '0': | ||||
4829 | case '1': | ||||
4830 | case '2': | ||||
4831 | case '3': | ||||
4832 | case '4': | ||||
4833 | case '5': | ||||
4834 | case '6': | ||||
4835 | case '7': | ||||
4836 | case '8': | ||||
4837 | case '9': | ||||
4838 | { | ||||
4839 | long number; | ||||
4840 | int i; | ||||
4841 | |||||
4842 | for (i = 0, number = 0; | ||||
4843 | i < 3 && ISDIGIT (c)(_sch_istable[(c) & 0xff] & (unsigned short)(_sch_isdigit )); | ||||
4844 | c = *input_line_pointer++, i++) | ||||
4845 | { | ||||
4846 | number = number * 8 + c - '0'; | ||||
4847 | } | ||||
4848 | |||||
4849 | c = number & 0xff; | ||||
4850 | } | ||||
4851 | --input_line_pointer; | ||||
4852 | break; | ||||
4853 | |||||
4854 | case 'x': | ||||
4855 | case 'X': | ||||
4856 | { | ||||
4857 | long number; | ||||
4858 | |||||
4859 | number = 0; | ||||
4860 | c = *input_line_pointer++; | ||||
4861 | while (ISXDIGIT (c)(_sch_istable[(c) & 0xff] & (unsigned short)(_sch_isxdigit ))) | ||||
4862 | { | ||||
4863 | if (ISDIGIT (c)(_sch_istable[(c) & 0xff] & (unsigned short)(_sch_isdigit ))) | ||||
4864 | number = number * 16 + c - '0'; | ||||
4865 | else if (ISUPPER (c)(_sch_istable[(c) & 0xff] & (unsigned short)(_sch_isupper ))) | ||||
4866 | number = number * 16 + c - 'A' + 10; | ||||
4867 | else | ||||
4868 | number = number * 16 + c - 'a' + 10; | ||||
4869 | c = *input_line_pointer++; | ||||
4870 | } | ||||
4871 | c = number & 0xff; | ||||
4872 | --input_line_pointer; | ||||
4873 | } | ||||
4874 | break; | ||||
4875 | |||||
4876 | case '\n': | ||||
4877 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ | ||||
4878 | as_warn (_("unterminated string; newline inserted")("unterminated string; newline inserted")); | ||||
4879 | c = '\n'; | ||||
4880 | bump_line_counters (); | ||||
4881 | break; | ||||
4882 | |||||
4883 | default: | ||||
4884 | |||||
4885 | #ifdef ONLY_STANDARD_ESCAPES | ||||
4886 | as_bad (_("bad escaped character in string")("bad escaped character in string")); | ||||
4887 | c = '?'; | ||||
4888 | #endif /* ONLY_STANDARD_ESCAPES */ | ||||
4889 | |||||
4890 | break; | ||||
4891 | } | ||||
4892 | break; | ||||
4893 | #endif /* ! defined (NO_STRING_ESCAPES) */ | ||||
4894 | |||||
4895 | default: | ||||
4896 | break; | ||||
4897 | } | ||||
4898 | return (c); | ||||
4899 | } | ||||
4900 | |||||
4901 | static segT | ||||
4902 | get_segmented_expression (register expressionS *expP) | ||||
4903 | { | ||||
4904 | register segT retval; | ||||
4905 | |||||
4906 | retval = expression (expP)expr (0, expP, expr_normal); | ||||
4907 | if (expP->X_op == O_illegal | ||||
4908 | || expP->X_op == O_absent | ||||
4909 | || expP->X_op == O_big) | ||||
4910 | { | ||||
4911 | as_bad (_("expected address expression")("expected address expression")); | ||||
4912 | expP->X_op = O_constant; | ||||
4913 | expP->X_add_number = 0; | ||||
4914 | retval = absolute_section((asection *) &bfd_abs_section); | ||||
4915 | } | ||||
4916 | return retval; | ||||
4917 | } | ||||
4918 | |||||
4919 | static segT | ||||
4920 | get_known_segmented_expression (register expressionS *expP) | ||||
4921 | { | ||||
4922 | register segT retval; | ||||
4923 | |||||
4924 | if ((retval = get_segmented_expression (expP)) == undefined_section((asection *) &bfd_und_section)) | ||||
4925 | { | ||||
4926 | /* There is no easy way to extract the undefined symbol from the | ||||
4927 | expression. */ | ||||
4928 | if (expP->X_add_symbol != NULL((void*)0) | ||||
4929 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | ||||
4930 | as_warn (_("symbol \"%s\" undefined; zero assumed")("symbol \"%s\" undefined; zero assumed"), | ||||
4931 | S_GET_NAME (expP->X_add_symbol)); | ||||
4932 | else | ||||
4933 | as_warn (_("some symbol undefined; zero assumed")("some symbol undefined; zero assumed")); | ||||
4934 | retval = absolute_section((asection *) &bfd_abs_section); | ||||
4935 | expP->X_op = O_constant; | ||||
4936 | expP->X_add_number = 0; | ||||
4937 | } | ||||
4938 | know (retval == absolute_section || SEG_NORMAL (retval)); | ||||
4939 | return (retval); | ||||
4940 | } | ||||
4941 | |||||
4942 | char /* Return terminator. */ | ||||
4943 | get_absolute_expression_and_terminator (long *val_pointer /* Return value of expression. */) | ||||
4944 | { | ||||
4945 | /* FIXME: val_pointer should probably be offsetT *. */ | ||||
4946 | *val_pointer = (long) get_absolute_expression (); | ||||
4947 | return (*input_line_pointer++); | ||||
4948 | } | ||||
4949 | |||||
4950 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. | ||||
4951 | Give a warning if that happens. */ | ||||
4952 | |||||
4953 | char * | ||||
4954 | demand_copy_C_string (int *len_pointer) | ||||
4955 | { | ||||
4956 | register char *s; | ||||
4957 | |||||
4958 | if ((s = demand_copy_string (len_pointer)) != 0) | ||||
4959 | { | ||||
4960 | register int len; | ||||
4961 | |||||
4962 | for (len = *len_pointer; len > 0; len--) | ||||
4963 | { | ||||
4964 | if (*s == 0) | ||||
4965 | { | ||||
4966 | s = 0; | ||||
4967 | len = 1; | ||||
4968 | *len_pointer = 0; | ||||
4969 | as_bad (_("this string may not contain \'\\0\'")("this string may not contain \'\\0\'")); | ||||
4970 | } | ||||
4971 | } | ||||
4972 | } | ||||
4973 | |||||
4974 | return s; | ||||
4975 | } | ||||
4976 | |||||
4977 | /* Demand string, but return a safe (=private) copy of the string. | ||||
4978 | Return NULL if we can't read a string here. */ | ||||
4979 | |||||
4980 | char * | ||||
4981 | demand_copy_string (int *lenP) | ||||
4982 | { | ||||
4983 | register unsigned int c; | ||||
4984 | register int len; | ||||
4985 | char *retval; | ||||
4986 | |||||
4987 | len = 0; | ||||
4988 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
4989 | if (*input_line_pointer == '\"') | ||||
4990 | { | ||||
4991 | input_line_pointer++; /* Skip opening quote. */ | ||||
4992 | |||||
4993 | while (is_a_char (c = next_char_of_string ())(((unsigned) (c = next_char_of_string ())) <= (0xff))) | ||||
4994 | { | ||||
4995 | obstack_1grow (¬es, c)__extension__ ({ struct obstack *__o = (¬es); if (__o-> next_free + 1 > __o->chunk_limit) _obstack_newchunk (__o , 1); (*((__o)->next_free)++ = (c)); (void) 0; }); | ||||
4996 | len++; | ||||
4997 | } | ||||
4998 | /* JF this next line is so demand_copy_C_string will return a | ||||
4999 | null terminated string. */ | ||||
5000 | obstack_1grow (¬es, '\0')__extension__ ({ struct obstack *__o = (¬es); if (__o-> next_free + 1 > __o->chunk_limit) _obstack_newchunk (__o , 1); (*((__o)->next_free)++ = ('\0')); (void) 0; }); | ||||
5001 | retval = obstack_finish (¬es)__extension__ ({ struct obstack *__o1 = (¬es); void *value ; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); | ||||
5002 | } | ||||
5003 | else | ||||
5004 | { | ||||
5005 | as_bad (_("missing string")("missing string")); | ||||
5006 | retval = NULL((void*)0); | ||||
5007 | ignore_rest_of_line (); | ||||
5008 | } | ||||
5009 | *lenP = len; | ||||
5010 | return (retval); | ||||
5011 | } | ||||
5012 | |||||
5013 | /* In: Input_line_pointer->next character. | ||||
5014 | |||||
5015 | Do: Skip input_line_pointer over all whitespace. | ||||
5016 | |||||
5017 | Out: 1 if input_line_pointer->end-of-line. */ | ||||
5018 | |||||
5019 | int | ||||
5020 | is_it_end_of_statement (void) | ||||
5021 | { | ||||
5022 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
5023 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | ||||
5024 | } | ||||
5025 | |||||
5026 | void | ||||
5027 | equals (char *sym_name, int reassign) | ||||
5028 | { | ||||
5029 | char *stop = NULL((void*)0); | ||||
5030 | char stopc; | ||||
5031 | |||||
5032 | input_line_pointer++; | ||||
5033 | if (*input_line_pointer == '=') | ||||
5034 | input_line_pointer++; | ||||
5035 | if (reassign < 0 && *input_line_pointer == '=') | ||||
5036 | input_line_pointer++; | ||||
5037 | |||||
5038 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | ||||
5039 | input_line_pointer++; | ||||
5040 | |||||
5041 | if (flag_mri) | ||||
5042 | stop = mri_comment_field (&stopc); | ||||
5043 | |||||
5044 | assign_symbol (sym_name, reassign >= 0 ? !reassign : reassign); | ||||
5045 | |||||
5046 | if (flag_mri) | ||||
5047 | { | ||||
5048 | demand_empty_rest_of_line (); | ||||
5049 | mri_comment_end (stop, stopc); | ||||
5050 | } | ||||
5051 | } | ||||
5052 | |||||
5053 | /* .incbin -- include a file verbatim at the current location. */ | ||||
5054 | |||||
5055 | void | ||||
5056 | s_incbin (int x ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
5057 | { | ||||
5058 | FILE * binfile; | ||||
5059 | char * path; | ||||
5060 | char * filename; | ||||
5061 | char * binfrag; | ||||
5062 | long skip = 0; | ||||
5063 | long count = 0; | ||||
5064 | long bytes; | ||||
5065 | int len; | ||||
5066 | |||||
5067 | #ifdef md_flush_pending_output | ||||
5068 | md_flush_pending_output (); | ||||
5069 | #endif | ||||
5070 | |||||
5071 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
5072 | filename = demand_copy_string (& len); | ||||
5073 | if (filename == NULL((void*)0)) | ||||
5074 | return; | ||||
5075 | |||||
5076 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
5077 | |||||
5078 | /* Look for optional skip and count. */ | ||||
5079 | if (* input_line_pointer == ',') | ||||
5080 | { | ||||
5081 | ++ input_line_pointer; | ||||
5082 | skip = get_absolute_expression (); | ||||
5083 | |||||
5084 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
5085 | |||||
5086 | if (* input_line_pointer == ',') | ||||
5087 | { | ||||
5088 | ++ input_line_pointer; | ||||
5089 | |||||
5090 | count = get_absolute_expression (); | ||||
5091 | if (count == 0) | ||||
5092 | as_warn (_(".incbin count zero, ignoring `%s'")(".incbin count zero, ignoring `%s'"), filename); | ||||
5093 | |||||
5094 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
5095 | } | ||||
5096 | } | ||||
5097 | |||||
5098 | demand_empty_rest_of_line (); | ||||
5099 | |||||
5100 | /* Try opening absolute path first, then try include dirs. */ | ||||
5101 | binfile = fopen (filename, FOPEN_RB"r"); | ||||
5102 | if (binfile == NULL((void*)0)) | ||||
5103 | { | ||||
5104 | int i; | ||||
5105 | |||||
5106 | path = xmalloc ((unsigned long) len + include_dir_maxlen + 5); | ||||
5107 | |||||
5108 | for (i = 0; i < include_dir_count; i++) | ||||
5109 | { | ||||
5110 | sprintf (path, "%s/%s", include_dirs[i], filename); | ||||
5111 | |||||
5112 | binfile = fopen (path, FOPEN_RB"r"); | ||||
5113 | if (binfile != NULL((void*)0)) | ||||
5114 | break; | ||||
5115 | } | ||||
5116 | |||||
5117 | if (binfile == NULL((void*)0)) | ||||
5118 | as_bad (_("file not found: %s")("file not found: %s"), filename); | ||||
5119 | } | ||||
5120 | else | ||||
5121 | path = xstrdup (filename); | ||||
5122 | |||||
5123 | if (binfile) | ||||
5124 | { | ||||
5125 | long file_len; | ||||
5126 | |||||
5127 | register_dependency (path); | ||||
5128 | |||||
5129 | /* Compute the length of the file. */ | ||||
5130 | if (fseek (binfile, 0, SEEK_END2) != 0) | ||||
5131 | { | ||||
5132 | as_bad (_("seek to end of .incbin file failed `%s'")("seek to end of .incbin file failed `%s'"), path); | ||||
5133 | goto done; | ||||
5134 | } | ||||
5135 | file_len = ftell (binfile); | ||||
5136 | |||||
5137 | /* If a count was not specified use the remainder of the file. */ | ||||
5138 | if (count == 0) | ||||
5139 | count = file_len - skip; | ||||
5140 | |||||
5141 | if (skip < 0 || count < 0 || file_len < 0 || skip + count > file_len) | ||||
5142 | { | ||||
5143 | as_bad (_("skip (%ld) or count (%ld) invalid for file size (%ld)")("skip (%ld) or count (%ld) invalid for file size (%ld)"), | ||||
5144 | skip, count, file_len); | ||||
5145 | goto done; | ||||
5146 | } | ||||
5147 | |||||
5148 | if (fseek (binfile, skip, SEEK_SET0) != 0) | ||||
5149 | { | ||||
5150 | as_bad (_("could not skip to %ld in file `%s'")("could not skip to %ld in file `%s'"), skip, path); | ||||
5151 | goto done; | ||||
5152 | } | ||||
5153 | |||||
5154 | /* Allocate frag space and store file contents in it. */ | ||||
5155 | binfrag = frag_more (count); | ||||
5156 | |||||
5157 | bytes = fread (binfrag, 1, count, binfile); | ||||
5158 | if (bytes < count) | ||||
5159 | as_warn (_("truncated file `%s', %ld of %ld bytes read")("truncated file `%s', %ld of %ld bytes read"), | ||||
5160 | path, bytes, count); | ||||
5161 | } | ||||
5162 | done: | ||||
5163 | if (binfile != NULL((void*)0)) | ||||
5164 | fclose (binfile); | ||||
5165 | if (path) | ||||
5166 | free (path); | ||||
5167 | } | ||||
5168 | |||||
5169 | /* .include -- include a file at this point. */ | ||||
5170 | |||||
5171 | void | ||||
5172 | s_include (int arg ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
5173 | { | ||||
5174 | char *filename; | ||||
5175 | int i; | ||||
5176 | FILE *try; | ||||
5177 | char *path; | ||||
5178 | |||||
5179 | if (!flag_m68k_mri0) | ||||
5180 | { | ||||
5181 | filename = demand_copy_string (&i); | ||||
5182 | if (filename == NULL((void*)0)) | ||||
5183 | { | ||||
5184 | /* demand_copy_string has already printed an error and | ||||
5185 | called ignore_rest_of_line. */ | ||||
5186 | return; | ||||
5187 | } | ||||
5188 | } | ||||
5189 | else | ||||
5190 | { | ||||
5191 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
5192 | i = 0; | ||||
5193 | while (!is_end_of_line[(unsigned char) *input_line_pointer] | ||||
5194 | && *input_line_pointer != ' ' | ||||
5195 | && *input_line_pointer != '\t') | ||||
5196 | { | ||||
5197 | obstack_1grow (¬es, *input_line_pointer)__extension__ ({ struct obstack *__o = (¬es); if (__o-> next_free + 1 > __o->chunk_limit) _obstack_newchunk (__o , 1); (*((__o)->next_free)++ = (*input_line_pointer)); (void ) 0; }); | ||||
5198 | ++input_line_pointer; | ||||
5199 | ++i; | ||||
5200 | } | ||||
5201 | |||||
5202 | obstack_1grow (¬es, '\0')__extension__ ({ struct obstack *__o = (¬es); if (__o-> next_free + 1 > __o->chunk_limit) _obstack_newchunk (__o , 1); (*((__o)->next_free)++ = ('\0')); (void) 0; }); | ||||
5203 | filename = obstack_finish (¬es)__extension__ ({ struct obstack *__o1 = (¬es); void *value ; value = (void *) __o1->object_base; if (__o1->next_free == value) __o1->maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask ) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1-> next_free - (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit ; __o1->object_base = __o1->next_free; value; }); | ||||
5204 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | ||||
5205 | ++input_line_pointer; | ||||
5206 | } | ||||
5207 | |||||
5208 | demand_empty_rest_of_line (); | ||||
5209 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); | ||||
5210 | |||||
5211 | for (i = 0; i < include_dir_count; i++) | ||||
5212 | { | ||||
5213 | strcpy (path, include_dirs[i]); | ||||
5214 | strcat (path, "/"); | ||||
5215 | strcat (path, filename); | ||||
5216 | if (0 != (try = fopen (path, FOPEN_RT"r"))) | ||||
5217 | { | ||||
5218 | fclose (try); | ||||
5219 | goto gotit; | ||||
5220 | } | ||||
5221 | } | ||||
5222 | |||||
5223 | free (path); | ||||
5224 | path = filename; | ||||
5225 | gotit: | ||||
5226 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ | ||||
5227 | register_dependency (path); | ||||
5228 | input_scrub_insert_file (path); | ||||
5229 | } | ||||
5230 | |||||
5231 | void | ||||
5232 | add_include_dir (char *path) | ||||
5233 | { | ||||
5234 | int i; | ||||
5235 | |||||
5236 | if (include_dir_count == 0) | ||||
5237 | { | ||||
5238 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | ||||
5239 | include_dirs[0] = "."; /* Current dir. */ | ||||
5240 | include_dir_count = 2; | ||||
5241 | } | ||||
5242 | else | ||||
5243 | { | ||||
5244 | include_dir_count++; | ||||
5245 | include_dirs = | ||||
5246 | (char **) realloc (include_dirs, | ||||
5247 | include_dir_count * sizeof (*include_dirs)); | ||||
5248 | } | ||||
5249 | |||||
5250 | include_dirs[include_dir_count - 1] = path; /* New one. */ | ||||
5251 | |||||
5252 | i = strlen (path); | ||||
5253 | if (i > include_dir_maxlen) | ||||
5254 | include_dir_maxlen = i; | ||||
5255 | } | ||||
5256 | |||||
5257 | /* Output debugging information to denote the source file. */ | ||||
5258 | |||||
5259 | static void | ||||
5260 | generate_file_debug (void) | ||||
5261 | { | ||||
5262 | if (debug_type == DEBUG_STABS) | ||||
5263 | stabs_generate_asm_file (); | ||||
5264 | } | ||||
5265 | |||||
5266 | /* Output line number debugging information for the current source line. */ | ||||
5267 | |||||
5268 | void | ||||
5269 | generate_lineno_debug (void) | ||||
5270 | { | ||||
5271 | switch (debug_type) | ||||
5272 | { | ||||
5273 | case DEBUG_UNSPECIFIED: | ||||
5274 | case DEBUG_NONE: | ||||
5275 | case DEBUG_DWARF: | ||||
5276 | break; | ||||
5277 | case DEBUG_STABS: | ||||
5278 | stabs_generate_asm_lineno (); | ||||
5279 | break; | ||||
5280 | case DEBUG_ECOFF: | ||||
5281 | ecoff_generate_asm_lineno (); | ||||
5282 | break; | ||||
5283 | case DEBUG_DWARF2: | ||||
5284 | /* ??? We could here indicate to dwarf2dbg.c that something | ||||
5285 | has changed. However, since there is additional backend | ||||
5286 | support that is required (calling dwarf2_emit_insn), we | ||||
5287 | let dwarf2dbg.c call as_where on its own. */ | ||||
5288 | break; | ||||
5289 | } | ||||
5290 | } | ||||
5291 | |||||
5292 | /* Output debugging information to mark a function entry point or end point. | ||||
5293 | END_P is zero for .func, and non-zero for .endfunc. */ | ||||
5294 | |||||
5295 | void | ||||
5296 | s_func (int end_p) | ||||
5297 | { | ||||
5298 | do_s_func (end_p, NULL((void*)0)); | ||||
5299 | } | ||||
5300 | |||||
5301 | /* Subroutine of s_func so targets can choose a different default prefix. | ||||
5302 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | ||||
5303 | |||||
5304 | static void | ||||
5305 | do_s_func (int end_p, const char *default_prefix) | ||||
5306 | { | ||||
5307 | /* Record the current function so that we can issue an error message for | ||||
5308 | misplaced .func,.endfunc, and also so that .endfunc needs no | ||||
5309 | arguments. */ | ||||
5310 | static char *current_name; | ||||
5311 | static char *current_label; | ||||
5312 | |||||
5313 | if (end_p) | ||||
5314 | { | ||||
5315 | if (current_name == NULL((void*)0)) | ||||
5316 | { | ||||
5317 | as_bad (_("missing .func")("missing .func")); | ||||
5318 | ignore_rest_of_line (); | ||||
5319 | return; | ||||
5320 | } | ||||
5321 | |||||
5322 | if (debug_type == DEBUG_STABS) | ||||
5323 | stabs_generate_asm_endfunc (current_name, current_label); | ||||
5324 | |||||
5325 | current_name = current_label = NULL((void*)0); | ||||
5326 | } | ||||
5327 | else /* ! end_p */ | ||||
5328 | { | ||||
5329 | char *name, *label; | ||||
5330 | char delim1, delim2; | ||||
5331 | |||||
5332 | if (current_name != NULL((void*)0)) | ||||
5333 | { | ||||
5334 | as_bad (_(".endfunc missing for previous .func")(".endfunc missing for previous .func")); | ||||
5335 | ignore_rest_of_line (); | ||||
5336 | return; | ||||
5337 | } | ||||
5338 | |||||
5339 | name = input_line_pointer; | ||||
5340 | delim1 = get_symbol_end (); | ||||
5341 | name = xstrdup (name); | ||||
5342 | *input_line_pointer = delim1; | ||||
5343 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
5344 | if (*input_line_pointer != ',') | ||||
5345 | { | ||||
5346 | if (default_prefix) | ||||
5347 | asprintf (&label, "%s%s", default_prefix, name); | ||||
5348 | else | ||||
5349 | { | ||||
5350 | char leading_char = bfd_get_symbol_leading_char (stdoutput)((stdoutput)->xvec->symbol_leading_char); | ||||
5351 | /* Missing entry point, use function's name with the leading | ||||
5352 | char prepended. */ | ||||
5353 | if (leading_char) | ||||
5354 | asprintf (&label, "%c%s", leading_char, name); | ||||
5355 | else | ||||
5356 | label = name; | ||||
5357 | } | ||||
5358 | } | ||||
5359 | else | ||||
5360 | { | ||||
5361 | ++input_line_pointer; | ||||
5362 | SKIP_WHITESPACE ()((*input_line_pointer == ' ') ? ++input_line_pointer : 0); | ||||
5363 | label = input_line_pointer; | ||||
5364 | delim2 = get_symbol_end (); | ||||
5365 | label = xstrdup (label); | ||||
5366 | *input_line_pointer = delim2; | ||||
5367 | } | ||||
5368 | |||||
5369 | if (debug_type == DEBUG_STABS) | ||||
5370 | stabs_generate_asm_func (name, label); | ||||
5371 | |||||
5372 | current_name = name; | ||||
5373 | current_label = label; | ||||
5374 | } | ||||
5375 | |||||
5376 | demand_empty_rest_of_line (); | ||||
5377 | } | ||||
5378 | |||||
5379 | void | ||||
5380 | s_ignore (int arg ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
5381 | { | ||||
5382 | ignore_rest_of_line (); | ||||
5383 | } | ||||
5384 | |||||
5385 | void | ||||
5386 | read_print_statistics (FILE *file) | ||||
5387 | { | ||||
5388 | hash_print_statistics (file, "pseudo-op table", po_hash); | ||||
5389 | } | ||||
5390 | |||||
5391 | /* Inserts the given line into the input stream. | ||||
5392 | |||||
5393 | This call avoids macro/conditionals nesting checking, since the contents of | ||||
5394 | the line are assumed to replace the contents of a line already scanned. | ||||
5395 | |||||
5396 | An appropriate use of this function would be substitution of input lines when | ||||
5397 | called by md_start_line_hook(). The given line is assumed to already be | ||||
5398 | properly scrubbed. */ | ||||
5399 | |||||
5400 | void | ||||
5401 | input_scrub_insert_line (const char *line) | ||||
5402 | { | ||||
5403 | sb newline; | ||||
5404 | sb_new (&newline); | ||||
5405 | sb_add_string (&newline, line); | ||||
5406 | input_scrub_include_sb (&newline, input_line_pointer, 0); | ||||
5407 | sb_kill (&newline); | ||||
5408 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | ||||
5409 | } | ||||
5410 | |||||
5411 | /* Insert a file into the input stream; the path must resolve to an actual | ||||
5412 | file; no include path searching or dependency registering is performed. */ | ||||
5413 | |||||
5414 | void | ||||
5415 | input_scrub_insert_file (char *path) | ||||
5416 | { | ||||
5417 | input_scrub_include_file (path, input_line_pointer); | ||||
5418 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | ||||
5419 | } | ||||
5420 | |||||
5421 | /* Find the end of a line, considering quotation and escaping of quotes. */ | ||||
5422 | |||||
5423 | #if !defined(TC_SINGLE_QUOTE_STRINGS) && defined(SINGLE_QUOTE_STRINGS) | ||||
5424 | # define TC_SINGLE_QUOTE_STRINGS 1 | ||||
5425 | #endif | ||||
5426 | |||||
5427 | static char * | ||||
5428 | _find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED__attribute__ ((__unused__))) | ||||
5429 | { | ||||
5430 | char inquote = '\0'; | ||||
5431 | int inescape = 0; | ||||
5432 | |||||
5433 | while (!is_end_of_line[(unsigned char) *s] | ||||
5434 | || (inquote && !ISCNTRL (*s)(_sch_istable[(*s) & 0xff] & (unsigned short)(_sch_iscntrl ))) | ||||
5435 | || (inquote == '\'' && flag_mri) | ||||
5436 | #ifdef TC_EOL_IN_INSN | ||||
5437 | || (insn && TC_EOL_IN_INSN (s)) | ||||
5438 | #endif | ||||
5439 | ) | ||||
5440 | { | ||||
5441 | if (mri_string && *s == '\'') | ||||
5442 | inquote ^= *s; | ||||
5443 | else if (inescape) | ||||
5444 | inescape = 0; | ||||
5445 | else if (*s == '\\') | ||||
5446 | inescape = 1; | ||||
5447 | else if (!inquote | ||||
5448 | ? *s == '"' | ||||
5449 | #ifdef TC_SINGLE_QUOTE_STRINGS | ||||
5450 | || (TC_SINGLE_QUOTE_STRINGS && *s == '\'') | ||||
5451 | #endif | ||||
5452 | : *s == inquote) | ||||
5453 | inquote ^= *s; | ||||
5454 | ++s; | ||||
5455 | } | ||||
5456 | if (inquote) | ||||
5457 | as_warn (_("missing closing `%c'")("missing closing `%c'"), inquote); | ||||
5458 | if (inescape) | ||||
5459 | as_warn (_("stray `\\'")("stray `\\'")); | ||||
5460 | return s; | ||||
5461 | } | ||||
5462 | |||||
5463 | char * | ||||
5464 | find_end_of_line (char *s, int mri_string) | ||||
5465 | { | ||||
5466 | return _find_end_of_line (s, mri_string, 0); | ||||
5467 | } |