Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
fa306131 AM |
2 | Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, |
3 | 2000 Free Software Foundation, Inc. | |
252b5132 RH |
4 | |
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
f0e652b4 | 20 | 02111-1307, USA. */ |
252b5132 RH |
21 | |
22 | #if 0 | |
041ff4dd NC |
23 | /* If your chars aren't 8 bits, you will change this a bit. |
24 | But then, GNU isn't spozed to run on your machine anyway. | |
25 | (RMS is so shortsighted sometimes.) */ | |
26 | #define MASK_CHAR (0xFF) | |
252b5132 | 27 | #else |
041ff4dd | 28 | #define MASK_CHAR ((int)(unsigned char) -1) |
252b5132 RH |
29 | #endif |
30 | ||
252b5132 | 31 | /* This is the largest known floating point format (for now). It will |
041ff4dd | 32 | grow when we do 4361 style flonums. */ |
252b5132 RH |
33 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
34 | ||
35 | /* Routines that read assembler source text to build spagetti in memory. | |
36 | Another group of these functions is in the expr.c module. */ | |
37 | ||
041ff4dd | 38 | /* For isdigit (). */ |
252b5132 RH |
39 | #include <ctype.h> |
40 | ||
41 | #include "as.h" | |
42 | #include "subsegs.h" | |
43 | #include "sb.h" | |
44 | #include "macro.h" | |
45 | #include "obstack.h" | |
46 | #include "listing.h" | |
47 | #include "ecoff.h" | |
48 | ||
49 | #ifndef TC_START_LABEL | |
50 | #define TC_START_LABEL(x,y) (x==':') | |
51 | #endif | |
52 | ||
8684e216 HPN |
53 | /* Set by the object-format or the target. */ |
54 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
041ff4dd NC |
55 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
56 | do \ | |
57 | { \ | |
58 | if ((SIZE) >= 8) \ | |
59 | (P2VAR) = 3; \ | |
60 | else if ((SIZE) >= 4) \ | |
61 | (P2VAR) = 2; \ | |
62 | else if ((SIZE) >= 2) \ | |
63 | (P2VAR) = 1; \ | |
64 | else \ | |
65 | (P2VAR) = 0; \ | |
66 | } \ | |
67 | while (0) | |
8684e216 HPN |
68 | #endif |
69 | ||
252b5132 | 70 | /* The NOP_OPCODE is for the alignment fill value. |
041ff4dd NC |
71 | Fill it a nop instruction so that the disassembler does not choke |
72 | on it. */ | |
252b5132 RH |
73 | #ifndef NOP_OPCODE |
74 | #define NOP_OPCODE 0x00 | |
75 | #endif | |
76 | ||
041ff4dd | 77 | char *input_line_pointer; /*->next char of source file to parse. */ |
252b5132 RH |
78 | |
79 | #if BITS_PER_CHAR != 8 | |
80 | /* The following table is indexed by[(char)] and will break if | |
81 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
82 | die horribly; | |
83 | #endif | |
84 | ||
85 | #ifndef LEX_AT | |
86 | /* The m88k unfortunately uses @ as a label beginner. */ | |
87 | #define LEX_AT 0 | |
88 | #endif | |
89 | ||
90 | #ifndef LEX_BR | |
91 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
92 | #define LEX_BR 0 | |
93 | #endif | |
94 | ||
95 | #ifndef LEX_PCT | |
96 | /* The Delta 68k assembler permits % inside label names. */ | |
97 | #define LEX_PCT 0 | |
98 | #endif | |
99 | ||
100 | #ifndef LEX_QM | |
101 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
102 | #define LEX_QM 0 | |
103 | #endif | |
104 | ||
58b5739a | 105 | #ifndef LEX_HASH |
800eeca4 JW |
106 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
107 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
108 | #define LEX_HASH 0 |
109 | #endif | |
110 | ||
252b5132 RH |
111 | #ifndef LEX_DOLLAR |
112 | /* The a29k assembler does not permits labels to start with $. */ | |
113 | #define LEX_DOLLAR 3 | |
114 | #endif | |
115 | ||
116 | #ifndef LEX_TILDE | |
117 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
118 | #define LEX_TILDE 0 | |
119 | #endif | |
120 | ||
041ff4dd | 121 | /* Used by is_... macros. our ctype[]. */ |
252b5132 RH |
122 | char lex_type[256] = |
123 | { | |
124 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ | |
125 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 126 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
127 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
128 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
129 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
130 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 131 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
132 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
133 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
134 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
135 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
136 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
137 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
138 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
139 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
140 | }; | |
141 | ||
041ff4dd NC |
142 | /* In: a character. |
143 | Out: 1 if this character ends a line. */ | |
252b5132 RH |
144 | char is_end_of_line[256] = |
145 | { | |
146 | #ifdef CR_EOL | |
b75c0c92 | 147 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 148 | #else |
b75c0c92 | 149 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 150 | #endif |
b75c0c92 AM |
151 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
152 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 153 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
154 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
155 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
156 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
157 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
158 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
159 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
160 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
161 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
162 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
163 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
164 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
165 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 166 | }; |
252b5132 | 167 | |
37d8bb27 NC |
168 | #ifdef IGNORE_OPCODE_CASE |
169 | char original_case_string[128]; | |
170 | #endif | |
171 | ||
041ff4dd | 172 | /* Functions private to this file. */ |
252b5132 | 173 | |
041ff4dd NC |
174 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
175 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 176 | |
041ff4dd NC |
177 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
178 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
179 | internals manual. */ | |
252b5132 RH |
180 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
181 | ||
041ff4dd | 182 | static char *old_buffer; /* JF a hack. */ |
252b5132 RH |
183 | static char *old_input; |
184 | static char *old_limit; | |
185 | ||
041ff4dd | 186 | /* Variables for handling include file directory table. */ |
252b5132 | 187 | |
041ff4dd NC |
188 | /* Table of pointers to directories to search for .include's. */ |
189 | char **include_dirs; | |
190 | ||
191 | /* How many are in the table. */ | |
192 | int include_dir_count; | |
193 | ||
194 | /* Length of longest in table. */ | |
195 | int include_dir_maxlen = 1; | |
252b5132 RH |
196 | |
197 | #ifndef WORKING_DOT_WORD | |
198 | struct broken_word *broken_words; | |
199 | int new_broken_words; | |
200 | #endif | |
201 | ||
202 | /* The current offset into the absolute section. We don't try to | |
203 | build frags in the absolute section, since no data can be stored | |
204 | there. We just keep track of the current offset. */ | |
205 | addressT abs_section_offset; | |
206 | ||
207 | /* If this line had an MRI style label, it is stored in this variable. | |
208 | This is used by some of the MRI pseudo-ops. */ | |
209 | symbolS *line_label; | |
210 | ||
211 | /* This global variable is used to support MRI common sections. We | |
212 | translate such sections into a common symbol. This variable is | |
213 | non-NULL when we are in an MRI common section. */ | |
214 | symbolS *mri_common_symbol; | |
215 | ||
216 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
217 | need to align to an even byte boundary unless the next pseudo-op is | |
218 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
219 | may be needed. */ | |
220 | static int mri_pending_align; | |
221 | ||
222 | #ifndef NO_LISTING | |
223 | #ifdef OBJ_ELF | |
224 | /* This variable is set to be non-zero if the next string we see might | |
225 | be the name of the source file in DWARF debugging information. See | |
226 | the comment in emit_expr for the format we look for. */ | |
227 | static int dwarf_file_string; | |
228 | #endif | |
229 | #endif | |
230 | ||
231 | static void cons_worker PARAMS ((int, int)); | |
2b47531b | 232 | static int scrub_from_string PARAMS ((char *, int)); |
252b5132 RH |
233 | static void do_align PARAMS ((int, char *, int, int)); |
234 | static void s_align PARAMS ((int, int)); | |
6d4d30bb | 235 | static void s_lcomm_internal PARAMS ((int, int)); |
252b5132 | 236 | static int hex_float PARAMS ((int, char *)); |
6d4d30bb AM |
237 | static inline int sizeof_sleb128 PARAMS ((offsetT)); |
238 | static inline int sizeof_uleb128 PARAMS ((valueT)); | |
239 | static inline int output_sleb128 PARAMS ((char *, offsetT)); | |
240 | static inline int output_uleb128 PARAMS ((char *, valueT)); | |
241 | static inline int output_big_sleb128 PARAMS ((char *, LITTLENUM_TYPE *, int)); | |
242 | static inline int output_big_uleb128 PARAMS ((char *, LITTLENUM_TYPE *, int)); | |
243 | static int output_big_leb128 PARAMS ((char *, LITTLENUM_TYPE *, int, int)); | |
252b5132 RH |
244 | static void do_org PARAMS ((segT, expressionS *, int)); |
245 | char *demand_copy_string PARAMS ((int *lenP)); | |
246 | static segT get_segmented_expression PARAMS ((expressionS *expP)); | |
247 | static segT get_known_segmented_expression PARAMS ((expressionS * expP)); | |
248 | static void pobegin PARAMS ((void)); | |
249 | static int get_line_sb PARAMS ((sb *)); | |
250 | static void generate_file_debug PARAMS ((void)); | |
251 | \f | |
252b5132 RH |
252 | void |
253 | read_begin () | |
254 | { | |
255 | const char *p; | |
256 | ||
257 | pobegin (); | |
258 | obj_read_begin_hook (); | |
259 | ||
260 | /* Something close -- but not too close -- to a multiple of 1024. | |
261 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
262 | obstack_begin (¬es, chunksize); | |
263 | obstack_begin (&cond_obstack, chunksize); | |
264 | ||
041ff4dd | 265 | /* Use machine dependent syntax. */ |
252b5132 RH |
266 | for (p = line_separator_chars; *p; p++) |
267 | is_end_of_line[(unsigned char) *p] = 1; | |
041ff4dd | 268 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
269 | |
270 | if (flag_mri) | |
271 | lex_type['?'] = 3; | |
272 | } | |
273 | \f | |
041ff4dd | 274 | /* Set up pseudo-op tables. */ |
252b5132 RH |
275 | |
276 | static struct hash_control *po_hash; | |
277 | ||
278 | static const pseudo_typeS potable[] = | |
279 | { | |
280 | {"abort", s_abort, 0}, | |
281 | {"align", s_align_ptwo, 0}, | |
282 | {"ascii", stringer, 0}, | |
283 | {"asciz", stringer, 1}, | |
284 | {"balign", s_align_bytes, 0}, | |
285 | {"balignw", s_align_bytes, -2}, | |
286 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 287 | /* block */ |
252b5132 RH |
288 | {"byte", cons, 1}, |
289 | {"comm", s_comm, 0}, | |
290 | {"common", s_mri_common, 0}, | |
291 | {"common.s", s_mri_common, 1}, | |
292 | {"data", s_data, 0}, | |
293 | {"dc", cons, 2}, | |
294 | {"dc.b", cons, 1}, | |
295 | {"dc.d", float_cons, 'd'}, | |
296 | {"dc.l", cons, 4}, | |
297 | {"dc.s", float_cons, 'f'}, | |
298 | {"dc.w", cons, 2}, | |
299 | {"dc.x", float_cons, 'x'}, | |
300 | {"dcb", s_space, 2}, | |
301 | {"dcb.b", s_space, 1}, | |
302 | {"dcb.d", s_float_space, 'd'}, | |
303 | {"dcb.l", s_space, 4}, | |
304 | {"dcb.s", s_float_space, 'f'}, | |
305 | {"dcb.w", s_space, 2}, | |
306 | {"dcb.x", s_float_space, 'x'}, | |
307 | {"ds", s_space, 2}, | |
308 | {"ds.b", s_space, 1}, | |
309 | {"ds.d", s_space, 8}, | |
310 | {"ds.l", s_space, 4}, | |
311 | {"ds.p", s_space, 12}, | |
312 | {"ds.s", s_space, 4}, | |
313 | {"ds.w", s_space, 2}, | |
314 | {"ds.x", s_space, 12}, | |
315 | {"debug", s_ignore, 0}, | |
316 | #ifdef S_SET_DESC | |
317 | {"desc", s_desc, 0}, | |
318 | #endif | |
041ff4dd | 319 | /* dim */ |
252b5132 | 320 | {"double", float_cons, 'd'}, |
041ff4dd NC |
321 | /* dsect */ |
322 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
323 | {"else", s_else, 0}, |
324 | {"elsec", s_else, 0}, | |
3fd9f047 | 325 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
326 | {"end", s_end, 0}, |
327 | {"endc", s_endif, 0}, | |
328 | {"endfunc", s_func, 1}, | |
329 | {"endif", s_endif, 0}, | |
041ff4dd | 330 | /* endef */ |
252b5132 RH |
331 | {"equ", s_set, 0}, |
332 | {"equiv", s_set, 1}, | |
333 | {"err", s_err, 0}, | |
334 | {"exitm", s_mexit, 0}, | |
041ff4dd NC |
335 | /* extend */ |
336 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 RH |
337 | {"appfile", s_app_file, 1}, |
338 | {"appline", s_app_line, 0}, | |
339 | {"fail", s_fail, 0}, | |
340 | {"file", s_app_file, 0}, | |
341 | {"fill", s_fill, 0}, | |
342 | {"float", float_cons, 'f'}, | |
343 | {"format", s_ignore, 0}, | |
344 | {"func", s_func, 0}, | |
345 | {"global", s_globl, 0}, | |
346 | {"globl", s_globl, 0}, | |
347 | {"hword", cons, 2}, | |
348 | {"if", s_if, (int) O_ne}, | |
349 | {"ifc", s_ifc, 0}, | |
350 | {"ifdef", s_ifdef, 0}, | |
351 | {"ifeq", s_if, (int) O_eq}, | |
352 | {"ifeqs", s_ifeqs, 0}, | |
353 | {"ifge", s_if, (int) O_ge}, | |
354 | {"ifgt", s_if, (int) O_gt}, | |
355 | {"ifle", s_if, (int) O_le}, | |
356 | {"iflt", s_if, (int) O_lt}, | |
357 | {"ifnc", s_ifc, 1}, | |
358 | {"ifndef", s_ifdef, 1}, | |
359 | {"ifne", s_if, (int) O_ne}, | |
360 | {"ifnes", s_ifeqs, 1}, | |
361 | {"ifnotdef", s_ifdef, 1}, | |
362 | {"include", s_include, 0}, | |
363 | {"int", cons, 4}, | |
364 | {"irp", s_irp, 0}, | |
365 | {"irep", s_irp, 0}, | |
366 | {"irpc", s_irp, 1}, | |
367 | {"irepc", s_irp, 1}, | |
368 | {"lcomm", s_lcomm, 0}, | |
041ff4dd | 369 | {"lflags", listing_flags, 0}, /* Listing flags. */ |
252b5132 | 370 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 371 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
372 | {"llen", listing_psize, 1}, |
373 | {"long", cons, 4}, | |
374 | {"lsym", s_lsym, 0}, | |
375 | {"macro", s_macro, 0}, | |
376 | {"mexit", s_mexit, 0}, | |
377 | {"mri", s_mri, 0}, | |
378 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
379 | {"name", s_ignore, 0}, | |
380 | {"noformat", s_ignore, 0}, | |
041ff4dd | 381 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
382 | {"nopage", listing_nopage, 0}, |
383 | {"octa", cons, 16}, | |
384 | {"offset", s_struct, 0}, | |
385 | {"org", s_org, 0}, | |
386 | {"p2align", s_align_ptwo, 0}, | |
387 | {"p2alignw", s_align_ptwo, -2}, | |
388 | {"p2alignl", s_align_ptwo, -4}, | |
389 | {"page", listing_eject, 0}, | |
390 | {"plen", listing_psize, 0}, | |
391 | {"print", s_print, 0}, | |
041ff4dd | 392 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
393 | {"purgem", s_purgem, 0}, |
394 | {"quad", cons, 8}, | |
395 | {"rep", s_rept, 0}, | |
396 | {"rept", s_rept, 0}, | |
397 | {"rva", s_rva, 4}, | |
041ff4dd NC |
398 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
399 | /* scl */ | |
400 | /* sect */ | |
252b5132 RH |
401 | {"set", s_set, 0}, |
402 | {"short", cons, 2}, | |
403 | {"single", float_cons, 'f'}, | |
041ff4dd | 404 | /* size */ |
252b5132 RH |
405 | {"space", s_space, 0}, |
406 | {"skip", s_space, 0}, | |
407 | {"sleb128", s_leb128, 1}, | |
408 | {"spc", s_ignore, 0}, | |
409 | {"stabd", s_stab, 'd'}, | |
410 | {"stabn", s_stab, 'n'}, | |
411 | {"stabs", s_stab, 's'}, | |
412 | {"string", stringer, 1}, | |
413 | {"struct", s_struct, 0}, | |
041ff4dd | 414 | /* tag */ |
252b5132 RH |
415 | {"text", s_text, 0}, |
416 | ||
417 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
418 | won't be able to use it for a while -- probably a year or more. | |
419 | But once this has been released, check with gcc maintainers | |
420 | before deleting it or even changing the spelling. */ | |
421 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
422 | /* If we're folding case -- done for some targets, not necessarily | |
423 | all -- the above string in an input file will be converted to | |
424 | this one. Match it either way... */ | |
425 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
426 | ||
041ff4dd | 427 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 428 | {"ttl", listing_title, 0}, |
041ff4dd | 429 | /* type */ |
252b5132 | 430 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
431 | /* use */ |
432 | /* val */ | |
252b5132 RH |
433 | {"xcom", s_comm, 0}, |
434 | {"xdef", s_globl, 0}, | |
435 | {"xref", s_ignore, 0}, | |
436 | {"xstabs", s_xstab, 's'}, | |
437 | {"word", cons, 2}, | |
438 | {"zero", s_space, 0}, | |
041ff4dd | 439 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
440 | }; |
441 | ||
442 | static int pop_override_ok = 0; | |
443 | static const char *pop_table_name; | |
444 | ||
445 | void | |
446 | pop_insert (table) | |
447 | const pseudo_typeS *table; | |
448 | { | |
449 | const char *errtxt; | |
450 | const pseudo_typeS *pop; | |
451 | for (pop = table; pop->poc_name; pop++) | |
452 | { | |
453 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
454 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
455 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
456 | errtxt); | |
457 | } | |
458 | } | |
459 | ||
460 | #ifndef md_pop_insert | |
461 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
462 | #endif | |
463 | ||
464 | #ifndef obj_pop_insert | |
465 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
466 | #endif | |
467 | ||
041ff4dd | 468 | static void |
252b5132 RH |
469 | pobegin () |
470 | { | |
471 | po_hash = hash_new (); | |
472 | ||
041ff4dd | 473 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
474 | pop_table_name = "md"; |
475 | md_pop_insert (); | |
476 | ||
041ff4dd | 477 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
478 | pop_table_name = "obj"; |
479 | pop_override_ok = 1; | |
480 | obj_pop_insert (); | |
481 | ||
041ff4dd | 482 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
483 | pop_table_name = "standard"; |
484 | pop_insert (potable); | |
485 | } | |
486 | \f | |
487 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
488 | if (ignore_input ()) \ | |
489 | { \ | |
041ff4dd | 490 | while (!is_end_of_line[(unsigned char) *input_line_pointer++]) \ |
252b5132 RH |
491 | if (input_line_pointer == buffer_limit) \ |
492 | break; \ | |
493 | continue; \ | |
494 | } | |
495 | ||
252b5132 RH |
496 | /* This function is used when scrubbing the characters between #APP |
497 | and #NO_APP. */ | |
498 | ||
499 | static char *scrub_string; | |
500 | static char *scrub_string_end; | |
501 | ||
502 | static int | |
2b47531b ILT |
503 | scrub_from_string (buf, buflen) |
504 | char *buf; | |
505 | int buflen; | |
252b5132 | 506 | { |
2b47531b ILT |
507 | int copy; |
508 | ||
509 | copy = scrub_string_end - scrub_string; | |
510 | if (copy > buflen) | |
511 | copy = buflen; | |
512 | memcpy (buf, scrub_string, copy); | |
513 | scrub_string += copy; | |
514 | return copy; | |
252b5132 RH |
515 | } |
516 | ||
041ff4dd NC |
517 | /* We read the file, putting things into a web that represents what we |
518 | have been reading. */ | |
519 | void | |
252b5132 RH |
520 | read_a_source_file (name) |
521 | char *name; | |
522 | { | |
523 | register char c; | |
041ff4dd | 524 | register char *s; /* String of symbol, '\0' appended. */ |
252b5132 RH |
525 | register int temp; |
526 | pseudo_typeS *pop; | |
527 | ||
4c400d5e AM |
528 | #ifdef WARN_COMMENTS |
529 | found_comment = 0; | |
530 | #endif | |
531 | ||
252b5132 RH |
532 | buffer = input_scrub_new_file (name); |
533 | ||
534 | listing_file (name); | |
535 | listing_newline (NULL); | |
536 | register_dependency (name); | |
537 | ||
538 | /* Generate debugging information before we've read anything in to denote | |
539 | this file as the "main" source file and not a subordinate one | |
540 | (e.g. N_SO vs N_SOL in stabs). */ | |
541 | generate_file_debug (); | |
542 | ||
543 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd NC |
544 | { /* We have another line to parse. */ |
545 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
252b5132 RH |
546 | contin: /* JF this goto is my fault I admit it. |
547 | Someone brave please re-write the whole | |
548 | input section here? Pleeze??? */ | |
549 | while (input_line_pointer < buffer_limit) | |
550 | { | |
041ff4dd | 551 | /* We have more of this buffer to parse. */ |
252b5132 | 552 | |
041ff4dd NC |
553 | /* We now have input_line_pointer->1st char of next line. |
554 | If input_line_pointer [-1] == '\n' then we just | |
555 | scanned another line: so bump line counters. */ | |
252b5132 RH |
556 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
557 | { | |
558 | #ifdef md_start_line_hook | |
559 | md_start_line_hook (); | |
560 | #endif | |
252b5132 RH |
561 | if (input_line_pointer[-1] == '\n') |
562 | bump_line_counters (); | |
563 | ||
564 | line_label = NULL; | |
565 | ||
abd63a32 | 566 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
567 | { |
568 | /* Text at the start of a line must be a label, we | |
569 | run down and stick a colon in. */ | |
570 | if (is_name_beginner (*input_line_pointer)) | |
571 | { | |
572 | char *line_start = input_line_pointer; | |
573 | char c; | |
574 | int mri_line_macro; | |
575 | ||
576 | LISTING_NEWLINE (); | |
577 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
578 | ||
579 | c = get_symbol_end (); | |
580 | ||
581 | /* In MRI mode, the EQU and MACRO pseudoops must | |
582 | be handled specially. */ | |
583 | mri_line_macro = 0; | |
584 | if (flag_m68k_mri) | |
585 | { | |
586 | char *rest = input_line_pointer + 1; | |
587 | ||
588 | if (*rest == ':') | |
589 | ++rest; | |
590 | if (*rest == ' ' || *rest == '\t') | |
591 | ++rest; | |
592 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
593 | || strncasecmp (rest, "SET", 3) == 0) | |
594 | && (rest[3] == ' ' || rest[3] == '\t')) | |
595 | { | |
596 | input_line_pointer = rest + 3; | |
597 | equals (line_start, | |
598 | strncasecmp (rest, "SET", 3) == 0); | |
599 | continue; | |
600 | } | |
601 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
602 | && (rest[5] == ' ' | |
603 | || rest[5] == '\t' | |
604 | || is_end_of_line[(unsigned char) rest[5]])) | |
605 | mri_line_macro = 1; | |
606 | } | |
607 | ||
608 | /* In MRI mode, we need to handle the MACRO | |
609 | pseudo-op specially: we don't want to put the | |
610 | symbol in the symbol table. */ | |
041ff4dd | 611 | if (!mri_line_macro |
a25c045a | 612 | #ifdef TC_START_LABEL_WITHOUT_COLON |
041ff4dd | 613 | && TC_START_LABEL_WITHOUT_COLON(c, |
a25c045a TW |
614 | input_line_pointer) |
615 | #endif | |
616 | ) | |
252b5132 RH |
617 | line_label = colon (line_start); |
618 | else | |
619 | line_label = symbol_create (line_start, | |
620 | absolute_section, | |
621 | (valueT) 0, | |
622 | &zero_address_frag); | |
623 | ||
624 | *input_line_pointer = c; | |
625 | if (c == ':') | |
626 | input_line_pointer++; | |
627 | } | |
628 | } | |
629 | } | |
630 | ||
041ff4dd NC |
631 | /* We are at the begining of a line, or similar place. |
632 | We expect a well-formed assembler statement. | |
633 | A "symbol-name:" is a statement. | |
f0e652b4 | 634 | |
041ff4dd NC |
635 | Depending on what compiler is used, the order of these tests |
636 | may vary to catch most common case 1st. | |
637 | Each test is independent of all other tests at the (top) level. | |
638 | PLEASE make a compiler that doesn't use this assembler. | |
639 | It is crufty to waste a compiler's time encoding things for this | |
640 | assembler, which then wastes more time decoding it. | |
641 | (And communicating via (linear) files is silly! | |
642 | If you must pass stuff, please pass a tree!) */ | |
252b5132 RH |
643 | if ((c = *input_line_pointer++) == '\t' |
644 | || c == ' ' | |
645 | || c == '\f' | |
646 | || c == 0) | |
041ff4dd NC |
647 | c = *input_line_pointer++; |
648 | ||
649 | know (c != ' '); /* No further leading whitespace. */ | |
252b5132 RH |
650 | |
651 | #ifndef NO_LISTING | |
652 | /* If listing is on, and we are expanding a macro, then give | |
653 | the listing code the contents of the expanded line. */ | |
654 | if (listing) | |
655 | { | |
656 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
657 | { | |
658 | char *copy; | |
659 | int len; | |
660 | ||
661 | /* Find the end of the current expanded macro line. */ | |
041ff4dd | 662 | for (s = input_line_pointer - 1; *s ; ++s) |
252b5132 RH |
663 | if (is_end_of_line[(unsigned char) *s]) |
664 | break; | |
665 | ||
666 | /* Copy it for safe keeping. Also give an indication of | |
667 | how much macro nesting is involved at this point. */ | |
668 | len = s - (input_line_pointer-1); | |
669 | copy = (char *) xmalloc (len + macro_nest + 2); | |
670 | memset (copy, '>', macro_nest); | |
671 | copy[macro_nest] = ' '; | |
041ff4dd NC |
672 | memcpy (copy + macro_nest + 1, input_line_pointer - 1, len); |
673 | copy[macro_nest + 1 + len] = '\0'; | |
252b5132 RH |
674 | |
675 | /* Install the line with the listing facility. */ | |
676 | listing_newline (copy); | |
677 | } | |
678 | else | |
679 | listing_newline (NULL); | |
680 | } | |
681 | #endif | |
041ff4dd NC |
682 | /* C is the 1st significant character. |
683 | Input_line_pointer points after that character. */ | |
252b5132 RH |
684 | if (is_name_beginner (c)) |
685 | { | |
041ff4dd | 686 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
687 | HANDLE_CONDITIONAL_ASSEMBLY (); |
688 | ||
689 | s = --input_line_pointer; | |
041ff4dd NC |
690 | c = get_symbol_end (); /* name's delimiter. */ |
691 | ||
692 | /* C is character after symbol. | |
693 | That character's place in the input line is now '\0'. | |
694 | S points to the beginning of the symbol. | |
695 | [In case of pseudo-op, s->'.'.] | |
696 | Input_line_pointer->'\0' where c was. */ | |
697 | if (TC_START_LABEL (c, input_line_pointer)) | |
252b5132 RH |
698 | { |
699 | if (flag_m68k_mri) | |
700 | { | |
701 | char *rest = input_line_pointer + 1; | |
702 | ||
703 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
704 | if (*rest == ':') |
705 | ++rest; | |
f0e652b4 | 706 | |
252b5132 RH |
707 | if (*rest == ' ' || *rest == '\t') |
708 | ++rest; | |
f0e652b4 | 709 | |
252b5132 RH |
710 | if ((strncasecmp (rest, "EQU", 3) == 0 |
711 | || strncasecmp (rest, "SET", 3) == 0) | |
712 | && (rest[3] == ' ' || rest[3] == '\t')) | |
713 | { | |
714 | input_line_pointer = rest + 3; | |
715 | equals (s, 1); | |
716 | continue; | |
717 | } | |
718 | } | |
719 | ||
041ff4dd NC |
720 | line_label = colon (s); /* User-defined label. */ |
721 | /* Put ':' back for error messages' sake. */ | |
722 | *input_line_pointer++ = ':'; | |
723 | /* Input_line_pointer->after ':'. */ | |
252b5132 | 724 | SKIP_WHITESPACE (); |
252b5132 RH |
725 | } |
726 | else if (c == '=' | |
727 | || ((c == ' ' || c == '\t') | |
728 | && input_line_pointer[1] == '=' | |
729 | #ifdef TC_EQUAL_IN_INSN | |
041ff4dd | 730 | && !TC_EQUAL_IN_INSN (c, input_line_pointer) |
252b5132 RH |
731 | #endif |
732 | )) | |
733 | { | |
734 | equals (s, 1); | |
735 | demand_empty_rest_of_line (); | |
736 | } | |
737 | else | |
041ff4dd NC |
738 | { |
739 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
740 | pop = NULL; |
741 | ||
252b5132 RH |
742 | #ifdef IGNORE_OPCODE_CASE |
743 | { | |
744 | char *s2 = s; | |
37d8bb27 NC |
745 | |
746 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
747 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
748 | ||
252b5132 RH |
749 | while (*s2) |
750 | { | |
751 | if (isupper ((unsigned char) *s2)) | |
752 | *s2 = tolower (*s2); | |
753 | s2++; | |
754 | } | |
755 | } | |
756 | #endif | |
abd63a32 | 757 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 RH |
758 | { |
759 | /* The MRI assembler and the m88k use pseudo-ops | |
760 | without a period. */ | |
761 | pop = (pseudo_typeS *) hash_find (po_hash, s); | |
762 | if (pop != NULL && pop->poc_handler == NULL) | |
763 | pop = NULL; | |
764 | } | |
765 | ||
766 | if (pop != NULL | |
041ff4dd | 767 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 768 | { |
041ff4dd | 769 | /* PSEUDO - OP. |
f0e652b4 | 770 | |
041ff4dd NC |
771 | WARNING: c has next char, which may be end-of-line. |
772 | We lookup the pseudo-op table with s+1 because we | |
773 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
774 | |
775 | if (pop == NULL) | |
776 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
777 | ||
778 | /* In MRI mode, we may need to insert an | |
779 | automatic alignment directive. What a hack | |
780 | this is. */ | |
781 | if (mri_pending_align | |
782 | && (pop == NULL | |
041ff4dd NC |
783 | || !((pop->poc_handler == cons |
784 | && pop->poc_val == 1) | |
785 | || (pop->poc_handler == s_space | |
786 | && pop->poc_val == 1) | |
252b5132 | 787 | #ifdef tc_conditional_pseudoop |
041ff4dd | 788 | || tc_conditional_pseudoop (pop) |
252b5132 | 789 | #endif |
041ff4dd NC |
790 | || pop->poc_handler == s_if |
791 | || pop->poc_handler == s_ifdef | |
792 | || pop->poc_handler == s_ifc | |
793 | || pop->poc_handler == s_ifeqs | |
794 | || pop->poc_handler == s_else | |
795 | || pop->poc_handler == s_endif | |
796 | || pop->poc_handler == s_globl | |
797 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
798 | { |
799 | do_align (1, (char *) NULL, 0, 0); | |
800 | mri_pending_align = 0; | |
f0e652b4 | 801 | |
252b5132 RH |
802 | if (line_label != NULL) |
803 | { | |
2b47531b | 804 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
805 | S_SET_VALUE (line_label, frag_now_fix ()); |
806 | } | |
807 | } | |
808 | ||
041ff4dd | 809 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
810 | if (pop == NULL) |
811 | { | |
812 | as_bad (_("Unknown pseudo-op: `%s'"), s); | |
813 | *input_line_pointer = c; | |
814 | s_ignore (0); | |
815 | continue; | |
816 | } | |
817 | ||
041ff4dd | 818 | /* Put it back for error messages etc. */ |
252b5132 RH |
819 | *input_line_pointer = c; |
820 | /* The following skip of whitespace is compulsory. | |
821 | A well shaped space is sometimes all that separates | |
041ff4dd | 822 | keyword from operands. */ |
252b5132 RH |
823 | if (c == ' ' || c == '\t') |
824 | input_line_pointer++; | |
041ff4dd NC |
825 | |
826 | /* Input_line is restored. | |
827 | Input_line_pointer->1st non-blank char | |
828 | after pseudo-operation. */ | |
252b5132 RH |
829 | (*pop->poc_handler) (pop->poc_val); |
830 | ||
831 | /* If that was .end, just get out now. */ | |
832 | if (pop->poc_handler == s_end) | |
833 | goto quit; | |
834 | } | |
835 | else | |
836 | { | |
1bf67e0d ILT |
837 | int inquote = 0; |
838 | #ifdef QUOTES_IN_INSN | |
839 | int inescape = 0; | |
840 | #endif | |
252b5132 | 841 | |
041ff4dd NC |
842 | /* WARNING: c has char, which may be end-of-line. */ |
843 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 RH |
844 | *input_line_pointer = c; |
845 | while (!is_end_of_line[(unsigned char) *input_line_pointer] | |
846 | || inquote | |
847 | #ifdef TC_EOL_IN_INSN | |
848 | || TC_EOL_IN_INSN (input_line_pointer) | |
849 | #endif | |
850 | ) | |
851 | { | |
852 | if (flag_m68k_mri && *input_line_pointer == '\'') | |
041ff4dd | 853 | inquote = !inquote; |
1c32af22 RH |
854 | #ifdef QUOTES_IN_INSN |
855 | if (inescape) | |
856 | inescape = 0; | |
857 | else if (*input_line_pointer == '"') | |
041ff4dd | 858 | inquote = !inquote; |
1c32af22 RH |
859 | else if (*input_line_pointer == '\\') |
860 | inescape = 1; | |
861 | #endif | |
252b5132 RH |
862 | input_line_pointer++; |
863 | } | |
864 | ||
865 | c = *input_line_pointer; | |
866 | *input_line_pointer = '\0'; | |
867 | ||
868 | generate_lineno_debug (); | |
869 | ||
870 | if (macro_defined) | |
871 | { | |
872 | sb out; | |
873 | const char *err; | |
041ff4dd | 874 | macro_entry *macro; |
252b5132 | 875 | |
9f10757c | 876 | if (check_macro (s, &out, '\0', &err, ¯o)) |
252b5132 RH |
877 | { |
878 | if (err != NULL) | |
4c63da97 | 879 | as_bad ("%s", err); |
252b5132 RH |
880 | *input_line_pointer++ = c; |
881 | input_scrub_include_sb (&out, | |
9f10757c | 882 | input_line_pointer, 1); |
252b5132 RH |
883 | sb_kill (&out); |
884 | buffer_limit = | |
885 | input_scrub_next_buffer (&input_line_pointer); | |
9f10757c | 886 | #ifdef md_macro_info |
041ff4dd | 887 | md_macro_info (macro); |
9f10757c | 888 | #endif |
252b5132 RH |
889 | continue; |
890 | } | |
891 | } | |
892 | ||
893 | if (mri_pending_align) | |
894 | { | |
895 | do_align (1, (char *) NULL, 0, 0); | |
896 | mri_pending_align = 0; | |
897 | if (line_label != NULL) | |
898 | { | |
2b47531b | 899 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
900 | S_SET_VALUE (line_label, frag_now_fix ()); |
901 | } | |
902 | } | |
903 | ||
041ff4dd | 904 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
905 | |
906 | *input_line_pointer++ = c; | |
907 | ||
908 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
909 | this instruction. */ |
910 | } | |
911 | } | |
252b5132 | 912 | continue; |
041ff4dd | 913 | } |
252b5132 RH |
914 | |
915 | /* Empty statement? */ | |
916 | if (is_end_of_line[(unsigned char) c]) | |
917 | continue; | |
918 | ||
919 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) | |
920 | && isdigit ((unsigned char) c)) | |
921 | { | |
041ff4dd | 922 | /* local label ("4:") */ |
252b5132 RH |
923 | char *backup = input_line_pointer; |
924 | ||
925 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
926 | ||
927 | temp = c - '0'; | |
928 | ||
041ff4dd | 929 | /* Read the whole number. */ |
252b5132 RH |
930 | while (isdigit ((unsigned char) *input_line_pointer)) |
931 | { | |
932 | temp = (temp * 10) + *input_line_pointer - '0'; | |
933 | ++input_line_pointer; | |
041ff4dd | 934 | } |
252b5132 RH |
935 | |
936 | if (LOCAL_LABELS_DOLLAR | |
937 | && *input_line_pointer == '$' | |
938 | && *(input_line_pointer + 1) == ':') | |
939 | { | |
940 | input_line_pointer += 2; | |
941 | ||
942 | if (dollar_label_defined (temp)) | |
943 | { | |
944 | as_fatal (_("label \"%d$\" redefined"), temp); | |
945 | } | |
946 | ||
947 | define_dollar_label (temp); | |
948 | colon (dollar_label_name (temp, 0)); | |
949 | continue; | |
950 | } | |
951 | ||
952 | if (LOCAL_LABELS_FB | |
953 | && *input_line_pointer++ == ':') | |
954 | { | |
955 | fb_label_instance_inc (temp); | |
956 | colon (fb_label_name (temp, 0)); | |
957 | continue; | |
958 | } | |
959 | ||
960 | input_line_pointer = backup; | |
961 | } /* local label ("4:") */ | |
962 | ||
963 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 964 | { /* Its a comment. Better say APP or NO_APP. */ |
252b5132 RH |
965 | char *ends; |
966 | char *new_buf; | |
967 | char *new_tmp; | |
968 | unsigned int new_length; | |
969 | char *tmp_buf = 0; | |
970 | ||
971 | bump_line_counters (); | |
972 | s = input_line_pointer; | |
973 | if (strncmp (s, "APP\n", 4)) | |
974 | continue; /* We ignore it */ | |
975 | s += 4; | |
976 | ||
977 | ends = strstr (s, "#NO_APP\n"); | |
978 | ||
979 | if (!ends) | |
980 | { | |
981 | unsigned int tmp_len; | |
982 | unsigned int num; | |
983 | ||
984 | /* The end of the #APP wasn't in this buffer. We | |
985 | keep reading in buffers until we find the #NO_APP | |
986 | that goes with this #APP There is one. The specs | |
041ff4dd | 987 | guarentee it... */ |
252b5132 RH |
988 | tmp_len = buffer_limit - s; |
989 | tmp_buf = xmalloc (tmp_len + 1); | |
990 | memcpy (tmp_buf, s, tmp_len); | |
991 | do | |
992 | { | |
993 | new_tmp = input_scrub_next_buffer (&buffer); | |
994 | if (!new_tmp) | |
995 | break; | |
996 | else | |
997 | buffer_limit = new_tmp; | |
998 | input_line_pointer = buffer; | |
999 | ends = strstr (buffer, "#NO_APP\n"); | |
1000 | if (ends) | |
1001 | num = ends - buffer; | |
1002 | else | |
1003 | num = buffer_limit - buffer; | |
1004 | ||
1005 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
1006 | memcpy (tmp_buf + tmp_len, buffer, num); | |
1007 | tmp_len += num; | |
1008 | } | |
1009 | while (!ends); | |
1010 | ||
1011 | input_line_pointer = ends ? ends + 8 : NULL; | |
1012 | ||
1013 | s = tmp_buf; | |
1014 | ends = s + tmp_len; | |
1015 | ||
1016 | } | |
1017 | else | |
1018 | { | |
1019 | input_line_pointer = ends + 8; | |
1020 | } | |
1021 | ||
1022 | scrub_string = s; | |
1023 | scrub_string_end = ends; | |
1024 | ||
1025 | new_length = ends - s; | |
1026 | new_buf = (char *) xmalloc (new_length); | |
1027 | new_tmp = new_buf; | |
1028 | for (;;) | |
1029 | { | |
1030 | int space; | |
1031 | int size; | |
1032 | ||
1033 | space = (new_buf + new_length) - new_tmp; | |
1034 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1035 | ||
1036 | if (size < space) | |
1037 | { | |
1038 | new_tmp += size; | |
1039 | break; | |
1040 | } | |
1041 | ||
1042 | new_buf = xrealloc (new_buf, new_length + 100); | |
1043 | new_tmp = new_buf + new_length; | |
1044 | new_length += 100; | |
1045 | } | |
1046 | ||
1047 | if (tmp_buf) | |
1048 | free (tmp_buf); | |
1049 | old_buffer = buffer; | |
1050 | old_input = input_line_pointer; | |
1051 | old_limit = buffer_limit; | |
1052 | buffer = new_buf; | |
1053 | input_line_pointer = new_buf; | |
1054 | buffer_limit = new_tmp; | |
f0e652b4 | 1055 | |
252b5132 RH |
1056 | continue; |
1057 | } | |
1058 | ||
1059 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1060 | ||
1061 | #ifdef tc_unrecognized_line | |
1062 | if (tc_unrecognized_line (c)) | |
1063 | continue; | |
1064 | #endif | |
041ff4dd NC |
1065 | /* as_warn (_("Junk character %d."),c); Now done by ignore_rest. */ |
1066 | input_line_pointer--; /* Report unknown char as ignored. */ | |
252b5132 | 1067 | ignore_rest_of_line (); |
041ff4dd | 1068 | } |
252b5132 RH |
1069 | |
1070 | #ifdef md_after_pass_hook | |
1071 | md_after_pass_hook (); | |
1072 | #endif | |
1073 | ||
1074 | if (old_buffer) | |
1075 | { | |
1076 | free (buffer); | |
1077 | bump_line_counters (); | |
1078 | if (old_input != 0) | |
1079 | { | |
1080 | buffer = old_buffer; | |
1081 | input_line_pointer = old_input; | |
1082 | buffer_limit = old_limit; | |
1083 | old_buffer = 0; | |
1084 | goto contin; | |
1085 | } | |
1086 | } | |
041ff4dd | 1087 | } |
252b5132 RH |
1088 | |
1089 | quit: | |
1090 | ||
1091 | #ifdef md_cleanup | |
041ff4dd | 1092 | md_cleanup (); |
252b5132 | 1093 | #endif |
041ff4dd NC |
1094 | /* Close the input file. */ |
1095 | input_scrub_close (); | |
4c400d5e AM |
1096 | #ifdef WARN_COMMENTS |
1097 | { | |
1098 | if (warn_comment && found_comment) | |
1099 | as_warn_where (found_comment_file, found_comment, | |
1100 | "first comment found here"); | |
1101 | } | |
1102 | #endif | |
252b5132 RH |
1103 | } |
1104 | ||
1105 | /* For most MRI pseudo-ops, the line actually ends at the first | |
1106 | nonquoted space. This function looks for that point, stuffs a null | |
1107 | in, and sets *STOPCP to the character that used to be there, and | |
1108 | returns the location. | |
1109 | ||
1110 | Until I hear otherwise, I am going to assume that this is only true | |
1111 | for the m68k MRI assembler. */ | |
1112 | ||
1113 | char * | |
1114 | mri_comment_field (stopcp) | |
1115 | char *stopcp; | |
1116 | { | |
252b5132 | 1117 | char *s; |
041ff4dd | 1118 | #ifdef TC_M68K |
252b5132 RH |
1119 | int inquote = 0; |
1120 | ||
1121 | know (flag_m68k_mri); | |
1122 | ||
1123 | for (s = input_line_pointer; | |
041ff4dd | 1124 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1125 | || inquote); |
1126 | s++) | |
1127 | { | |
1128 | if (*s == '\'') | |
041ff4dd | 1129 | inquote = !inquote; |
252b5132 | 1130 | } |
252b5132 | 1131 | #else |
041ff4dd NC |
1132 | for (s = input_line_pointer; |
1133 | !is_end_of_line[(unsigned char) *s]; | |
1134 | s++) | |
252b5132 | 1135 | ; |
041ff4dd | 1136 | #endif |
252b5132 RH |
1137 | *stopcp = *s; |
1138 | *s = '\0'; | |
f0e652b4 | 1139 | |
252b5132 | 1140 | return s; |
252b5132 RH |
1141 | } |
1142 | ||
1143 | /* Skip to the end of an MRI comment field. */ | |
1144 | ||
1145 | void | |
1146 | mri_comment_end (stop, stopc) | |
1147 | char *stop; | |
1148 | int stopc; | |
1149 | { | |
1150 | know (flag_mri); | |
1151 | ||
1152 | input_line_pointer = stop; | |
1153 | *stop = stopc; | |
041ff4dd | 1154 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1155 | ++input_line_pointer; |
1156 | } | |
1157 | ||
041ff4dd | 1158 | void |
252b5132 | 1159 | s_abort (ignore) |
ab9da554 | 1160 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1161 | { |
1162 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1163 | } | |
1164 | ||
1165 | /* Guts of .align directive. N is the power of two to which to align. | |
1166 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1167 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1168 | the maximum number of characters to skip when doing the alignment, | |
1169 | or 0 if there is no maximum. */ | |
1170 | ||
041ff4dd | 1171 | static void |
252b5132 RH |
1172 | do_align (n, fill, len, max) |
1173 | int n; | |
1174 | char *fill; | |
1175 | int len; | |
1176 | int max; | |
1177 | { | |
1178 | char default_fill; | |
1179 | ||
1180 | #ifdef md_do_align | |
1181 | md_do_align (n, fill, len, max, just_record_alignment); | |
1182 | #endif | |
1183 | ||
1184 | if (fill == NULL) | |
1185 | { | |
b9e57a38 | 1186 | if (subseg_text_p (now_seg)) |
252b5132 RH |
1187 | default_fill = NOP_OPCODE; |
1188 | else | |
1189 | default_fill = 0; | |
1190 | fill = &default_fill; | |
1191 | len = 1; | |
1192 | } | |
1193 | ||
041ff4dd | 1194 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1195 | if (n != 0 && !need_pass_2) |
1196 | { | |
1197 | if (len <= 1) | |
1198 | frag_align (n, *fill, max); | |
1199 | else | |
1200 | frag_align_pattern (n, fill, len, max); | |
1201 | } | |
1202 | ||
1203 | #ifdef md_do_align | |
1204 | just_record_alignment: | |
1205 | #endif | |
1206 | ||
bea9907b | 1207 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1208 | } |
1209 | ||
1210 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1211 | (in bytes). A negative ARG is the negative of the length of the | |
1212 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1213 | interpreted as the byte boundary, rather than the power of 2. */ | |
1214 | ||
1215 | static void | |
1216 | s_align (arg, bytes_p) | |
1217 | int arg; | |
1218 | int bytes_p; | |
1219 | { | |
1220 | register unsigned int align; | |
1221 | char *stop = NULL; | |
1222 | char stopc; | |
1223 | offsetT fill = 0; | |
1224 | int max; | |
1225 | int fill_p; | |
1226 | ||
1227 | if (flag_mri) | |
1228 | stop = mri_comment_field (&stopc); | |
1229 | ||
1230 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1231 | { | |
1232 | if (arg < 0) | |
1233 | align = 0; | |
1234 | else | |
041ff4dd | 1235 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1236 | } |
1237 | else | |
1238 | { | |
1239 | align = get_absolute_expression (); | |
1240 | SKIP_WHITESPACE (); | |
1241 | } | |
1242 | ||
1243 | if (bytes_p) | |
1244 | { | |
1245 | /* Convert to a power of 2. */ | |
1246 | if (align != 0) | |
1247 | { | |
1248 | unsigned int i; | |
1249 | ||
1250 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1251 | ; | |
1252 | if (align != 1) | |
1253 | as_bad (_("Alignment not a power of 2")); | |
f0e652b4 | 1254 | |
252b5132 RH |
1255 | align = i; |
1256 | } | |
1257 | } | |
1258 | ||
1259 | if (align > 15) | |
1260 | { | |
1261 | align = 15; | |
1262 | as_bad (_("Alignment too large: %u assumed"), align); | |
1263 | } | |
1264 | ||
1265 | if (*input_line_pointer != ',') | |
1266 | { | |
1267 | fill_p = 0; | |
1268 | max = 0; | |
1269 | } | |
1270 | else | |
1271 | { | |
1272 | ++input_line_pointer; | |
1273 | if (*input_line_pointer == ',') | |
1274 | fill_p = 0; | |
1275 | else | |
1276 | { | |
1277 | fill = get_absolute_expression (); | |
1278 | SKIP_WHITESPACE (); | |
1279 | fill_p = 1; | |
1280 | } | |
1281 | ||
1282 | if (*input_line_pointer != ',') | |
1283 | max = 0; | |
1284 | else | |
1285 | { | |
1286 | ++input_line_pointer; | |
1287 | max = get_absolute_expression (); | |
1288 | } | |
1289 | } | |
1290 | ||
041ff4dd | 1291 | if (!fill_p) |
252b5132 RH |
1292 | { |
1293 | if (arg < 0) | |
1294 | as_warn (_("expected fill pattern missing")); | |
1295 | do_align (align, (char *) NULL, 0, max); | |
1296 | } | |
1297 | else | |
1298 | { | |
1299 | int fill_len; | |
1300 | ||
1301 | if (arg >= 0) | |
1302 | fill_len = 1; | |
1303 | else | |
041ff4dd | 1304 | fill_len = -arg; |
252b5132 RH |
1305 | if (fill_len <= 1) |
1306 | { | |
1307 | char fill_char; | |
1308 | ||
1309 | fill_char = fill; | |
1310 | do_align (align, &fill_char, fill_len, max); | |
1311 | } | |
1312 | else | |
1313 | { | |
1314 | char ab[16]; | |
1315 | ||
1316 | if ((size_t) fill_len > sizeof ab) | |
1317 | abort (); | |
1318 | md_number_to_chars (ab, fill, fill_len); | |
1319 | do_align (align, ab, fill_len, max); | |
1320 | } | |
1321 | } | |
1322 | ||
1323 | demand_empty_rest_of_line (); | |
1324 | ||
1325 | if (flag_mri) | |
1326 | mri_comment_end (stop, stopc); | |
1327 | } | |
1328 | ||
1329 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1330 | align to a 4 byte boundary. */ | |
1331 | ||
041ff4dd | 1332 | void |
252b5132 RH |
1333 | s_align_bytes (arg) |
1334 | int arg; | |
1335 | { | |
1336 | s_align (arg, 1); | |
1337 | } | |
1338 | ||
1339 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1340 | to a 2**4 boundary. */ | |
1341 | ||
041ff4dd | 1342 | void |
252b5132 RH |
1343 | s_align_ptwo (arg) |
1344 | int arg; | |
1345 | { | |
1346 | s_align (arg, 0); | |
1347 | } | |
1348 | ||
041ff4dd | 1349 | void |
252b5132 | 1350 | s_comm (ignore) |
ab9da554 | 1351 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1352 | { |
1353 | register char *name; | |
1354 | register char c; | |
1355 | register char *p; | |
1356 | offsetT temp; | |
1357 | register symbolS *symbolP; | |
1358 | char *stop = NULL; | |
1359 | char stopc; | |
1360 | ||
1361 | if (flag_mri) | |
1362 | stop = mri_comment_field (&stopc); | |
1363 | ||
1364 | name = input_line_pointer; | |
1365 | c = get_symbol_end (); | |
041ff4dd | 1366 | /* Just after name is now '\0'. */ |
252b5132 RH |
1367 | p = input_line_pointer; |
1368 | *p = c; | |
1369 | SKIP_WHITESPACE (); | |
f0e652b4 | 1370 | |
252b5132 RH |
1371 | if (*input_line_pointer != ',') |
1372 | { | |
1373 | as_bad (_("Expected comma after symbol-name: rest of line ignored.")); | |
1374 | ignore_rest_of_line (); | |
1375 | if (flag_mri) | |
1376 | mri_comment_end (stop, stopc); | |
1377 | return; | |
1378 | } | |
f0e652b4 | 1379 | |
252b5132 | 1380 | input_line_pointer++; /* skip ',' */ |
f0e652b4 | 1381 | |
252b5132 RH |
1382 | if ((temp = get_absolute_expression ()) < 0) |
1383 | { | |
1384 | as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp); | |
1385 | ignore_rest_of_line (); | |
1386 | if (flag_mri) | |
1387 | mri_comment_end (stop, stopc); | |
1388 | return; | |
1389 | } | |
f0e652b4 | 1390 | |
252b5132 RH |
1391 | *p = 0; |
1392 | symbolP = symbol_find_or_make (name); | |
1393 | *p = c; | |
f0e652b4 | 1394 | |
041ff4dd | 1395 | if (S_IS_DEFINED (symbolP) && !S_IS_COMMON (symbolP)) |
252b5132 RH |
1396 | { |
1397 | as_bad (_("Ignoring attempt to re-define symbol `%s'."), | |
1398 | S_GET_NAME (symbolP)); | |
1399 | ignore_rest_of_line (); | |
1400 | if (flag_mri) | |
1401 | mri_comment_end (stop, stopc); | |
1402 | return; | |
1403 | } | |
f0e652b4 | 1404 | |
252b5132 RH |
1405 | if (S_GET_VALUE (symbolP)) |
1406 | { | |
1407 | if (S_GET_VALUE (symbolP) != (valueT) temp) | |
1408 | as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."), | |
1409 | S_GET_NAME (symbolP), | |
1410 | (long) S_GET_VALUE (symbolP), | |
1411 | (long) temp); | |
1412 | } | |
1413 | else | |
1414 | { | |
1415 | S_SET_VALUE (symbolP, (valueT) temp); | |
1416 | S_SET_EXTERNAL (symbolP); | |
1417 | } | |
1418 | #ifdef OBJ_VMS | |
1419 | { | |
1420 | extern int flag_one; | |
041ff4dd | 1421 | if (!temp || !flag_one) |
252b5132 RH |
1422 | S_GET_OTHER(symbolP) = const_flag; |
1423 | } | |
1424 | #endif /* not OBJ_VMS */ | |
1425 | know (symbolP->sy_frag == &zero_address_frag); | |
1426 | ||
1427 | demand_empty_rest_of_line (); | |
1428 | ||
1429 | if (flag_mri) | |
1430 | mri_comment_end (stop, stopc); | |
1431 | } /* s_comm() */ | |
1432 | ||
1433 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1434 | symbol with the appropriate name. We make s_space do the right | |
1435 | thing by increasing the size. */ | |
1436 | ||
1437 | void | |
1438 | s_mri_common (small) | |
ab9da554 | 1439 | int small ATTRIBUTE_UNUSED; |
252b5132 RH |
1440 | { |
1441 | char *name; | |
1442 | char c; | |
1443 | char *alc = NULL; | |
1444 | symbolS *sym; | |
1445 | offsetT align; | |
1446 | char *stop = NULL; | |
1447 | char stopc; | |
1448 | ||
041ff4dd | 1449 | if (!flag_mri) |
252b5132 RH |
1450 | { |
1451 | s_comm (0); | |
1452 | return; | |
1453 | } | |
1454 | ||
1455 | stop = mri_comment_field (&stopc); | |
1456 | ||
1457 | SKIP_WHITESPACE (); | |
1458 | ||
1459 | name = input_line_pointer; | |
041ff4dd | 1460 | if (!isdigit ((unsigned char) *name)) |
252b5132 RH |
1461 | c = get_symbol_end (); |
1462 | else | |
1463 | { | |
1464 | do | |
1465 | { | |
1466 | ++input_line_pointer; | |
1467 | } | |
1468 | while (isdigit ((unsigned char) *input_line_pointer)); | |
f0e652b4 | 1469 | |
252b5132 RH |
1470 | c = *input_line_pointer; |
1471 | *input_line_pointer = '\0'; | |
1472 | ||
1473 | if (line_label != NULL) | |
1474 | { | |
1475 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1476 | + (input_line_pointer - name) | |
1477 | + 1); | |
1478 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1479 | name = alc; | |
1480 | } | |
1481 | } | |
1482 | ||
1483 | sym = symbol_find_or_make (name); | |
1484 | *input_line_pointer = c; | |
1485 | if (alc != NULL) | |
1486 | free (alc); | |
1487 | ||
1488 | if (*input_line_pointer != ',') | |
1489 | align = 0; | |
1490 | else | |
1491 | { | |
1492 | ++input_line_pointer; | |
1493 | align = get_absolute_expression (); | |
1494 | } | |
1495 | ||
041ff4dd | 1496 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 RH |
1497 | { |
1498 | as_bad (_("attempt to re-define symbol `%s'"), S_GET_NAME (sym)); | |
1499 | ignore_rest_of_line (); | |
1500 | mri_comment_end (stop, stopc); | |
1501 | return; | |
1502 | } | |
1503 | ||
1504 | S_SET_EXTERNAL (sym); | |
1505 | mri_common_symbol = sym; | |
1506 | ||
1507 | #ifdef S_SET_ALIGN | |
1508 | if (align != 0) | |
1509 | S_SET_ALIGN (sym, align); | |
1510 | #endif | |
1511 | ||
1512 | if (line_label != NULL) | |
1513 | { | |
2b47531b ILT |
1514 | expressionS exp; |
1515 | exp.X_op = O_symbol; | |
1516 | exp.X_add_symbol = sym; | |
1517 | exp.X_add_number = 0; | |
1518 | symbol_set_value_expression (line_label, &exp); | |
1519 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1520 | S_SET_SEGMENT (line_label, expr_section); |
1521 | } | |
1522 | ||
1523 | /* FIXME: We just ignore the small argument, which distinguishes | |
1524 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1525 | ||
1526 | /* Ignore the type and hptype. */ | |
1527 | if (*input_line_pointer == ',') | |
1528 | input_line_pointer += 2; | |
1529 | if (*input_line_pointer == ',') | |
1530 | input_line_pointer += 2; | |
1531 | ||
1532 | demand_empty_rest_of_line (); | |
1533 | ||
1534 | mri_comment_end (stop, stopc); | |
1535 | } | |
1536 | ||
1537 | void | |
1538 | s_data (ignore) | |
ab9da554 | 1539 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1540 | { |
1541 | segT section; | |
1542 | register int temp; | |
1543 | ||
1544 | temp = get_absolute_expression (); | |
1545 | if (flag_readonly_data_in_text) | |
1546 | { | |
1547 | section = text_section; | |
1548 | temp += 1000; | |
1549 | } | |
1550 | else | |
1551 | section = data_section; | |
1552 | ||
1553 | subseg_set (section, (subsegT) temp); | |
1554 | ||
1555 | #ifdef OBJ_VMS | |
1556 | const_flag = 0; | |
1557 | #endif | |
1558 | demand_empty_rest_of_line (); | |
1559 | } | |
1560 | ||
1561 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1562 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1563 | file name. This default definition may be overridden by the object | |
1564 | or CPU specific pseudo-ops. This function is also the default | |
1565 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1566 | .file. */ | |
1567 | ||
041ff4dd | 1568 | void |
252b5132 RH |
1569 | s_app_file (appfile) |
1570 | int appfile; | |
1571 | { | |
1572 | register char *s; | |
1573 | int length; | |
1574 | ||
041ff4dd | 1575 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1576 | if ((s = demand_copy_string (&length)) != 0) |
1577 | { | |
1578 | /* If this is a fake .appfile, a fake newline was inserted into | |
1579 | the buffer. Passing -2 to new_logical_line tells it to | |
1580 | account for it. */ | |
1581 | int may_omit | |
041ff4dd | 1582 | = (!new_logical_line (s, appfile ? -2 : -1) && appfile); |
252b5132 RH |
1583 | |
1584 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
1585 | backquote. */ | |
1586 | if (flag_m68k_mri | |
1587 | && *input_line_pointer == '\'' | |
1588 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1589 | ++input_line_pointer; | |
1590 | ||
1591 | demand_empty_rest_of_line (); | |
041ff4dd | 1592 | if (!may_omit) |
252b5132 RH |
1593 | { |
1594 | #ifdef LISTING | |
1595 | if (listing) | |
1596 | listing_source_file (s); | |
1597 | #endif | |
1598 | register_dependency (s); | |
1599 | #ifdef obj_app_file | |
1600 | obj_app_file (s); | |
1601 | #endif | |
1602 | } | |
1603 | } | |
1604 | } | |
1605 | ||
1606 | /* Handle the .appline pseudo-op. This is automatically generated by | |
1607 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1608 | default definition may be overridden by the object or CPU specific | |
1609 | pseudo-ops. */ | |
1610 | ||
1611 | void | |
1612 | s_app_line (ignore) | |
ab9da554 | 1613 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1614 | { |
1615 | int l; | |
1616 | ||
1617 | /* The given number is that of the next line. */ | |
1618 | l = get_absolute_expression () - 1; | |
1619 | if (l < 0) | |
1620 | /* Some of the back ends can't deal with non-positive line numbers. | |
1621 | Besides, it's silly. */ | |
041ff4dd NC |
1622 | as_warn (_("Line numbers must be positive; line number %d rejected."), |
1623 | l + 1); | |
252b5132 RH |
1624 | else |
1625 | { | |
1626 | new_logical_line ((char *) NULL, l); | |
1627 | #ifdef LISTING | |
1628 | if (listing) | |
1629 | listing_source_line (l); | |
1630 | #endif | |
1631 | } | |
1632 | demand_empty_rest_of_line (); | |
1633 | } | |
1634 | ||
1635 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1636 | read_a_source_file. */ | |
1637 | ||
1638 | void | |
1639 | s_end (ignore) | |
ab9da554 | 1640 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1641 | { |
1642 | if (flag_mri) | |
1643 | { | |
1644 | /* The MRI assembler permits the start symbol to follow .end, | |
1645 | but we don't support that. */ | |
1646 | SKIP_WHITESPACE (); | |
041ff4dd | 1647 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1648 | && *input_line_pointer != '*' |
1649 | && *input_line_pointer != '!') | |
1650 | as_warn (_("start address not supported")); | |
1651 | } | |
1652 | } | |
1653 | ||
1654 | /* Handle the .err pseudo-op. */ | |
1655 | ||
1656 | void | |
1657 | s_err (ignore) | |
ab9da554 | 1658 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1659 | { |
1660 | as_bad (_(".err encountered")); | |
1661 | demand_empty_rest_of_line (); | |
1662 | } | |
1663 | ||
1664 | /* Handle the MRI fail pseudo-op. */ | |
1665 | ||
1666 | void | |
1667 | s_fail (ignore) | |
ab9da554 | 1668 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1669 | { |
1670 | offsetT temp; | |
1671 | char *stop = NULL; | |
1672 | char stopc; | |
1673 | ||
1674 | if (flag_mri) | |
1675 | stop = mri_comment_field (&stopc); | |
1676 | ||
1677 | temp = get_absolute_expression (); | |
1678 | if (temp >= 500) | |
1679 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1680 | else | |
1681 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1682 | ||
1683 | demand_empty_rest_of_line (); | |
1684 | ||
1685 | if (flag_mri) | |
1686 | mri_comment_end (stop, stopc); | |
1687 | } | |
1688 | ||
041ff4dd | 1689 | void |
252b5132 | 1690 | s_fill (ignore) |
ab9da554 | 1691 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1692 | { |
1693 | expressionS rep_exp; | |
1694 | long size = 1; | |
1695 | register long fill = 0; | |
1696 | char *p; | |
1697 | ||
1698 | #ifdef md_flush_pending_output | |
1699 | md_flush_pending_output (); | |
1700 | #endif | |
1701 | ||
1702 | get_known_segmented_expression (&rep_exp); | |
1703 | if (*input_line_pointer == ',') | |
1704 | { | |
1705 | input_line_pointer++; | |
1706 | size = get_absolute_expression (); | |
1707 | if (*input_line_pointer == ',') | |
1708 | { | |
1709 | input_line_pointer++; | |
1710 | fill = get_absolute_expression (); | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1715 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1716 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1717 | { | |
1718 | as_warn (_(".fill size clamped to %d."), BSD_FILL_SIZE_CROCK_8); | |
1719 | size = BSD_FILL_SIZE_CROCK_8; | |
1720 | } | |
1721 | if (size < 0) | |
1722 | { | |
1723 | as_warn (_("Size negative: .fill ignored.")); | |
1724 | size = 0; | |
1725 | } | |
1726 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1727 | { | |
1728 | if (rep_exp.X_add_number < 0) | |
1729 | as_warn (_("Repeat < 0, .fill ignored")); | |
1730 | size = 0; | |
1731 | } | |
1732 | ||
1733 | if (size && !need_pass_2) | |
1734 | { | |
1735 | if (rep_exp.X_op == O_constant) | |
1736 | { | |
1737 | p = frag_var (rs_fill, (int) size, (int) size, | |
1738 | (relax_substateT) 0, (symbolS *) 0, | |
1739 | (offsetT) rep_exp.X_add_number, | |
1740 | (char *) 0); | |
1741 | } | |
1742 | else | |
1743 | { | |
1744 | /* We don't have a constant repeat count, so we can't use | |
1745 | rs_fill. We can get the same results out of rs_space, | |
1746 | but its argument is in bytes, so we must multiply the | |
1747 | repeat count by size. */ | |
1748 | ||
1749 | symbolS *rep_sym; | |
1750 | rep_sym = make_expr_symbol (&rep_exp); | |
1751 | if (size != 1) | |
1752 | { | |
1753 | expressionS size_exp; | |
1754 | size_exp.X_op = O_constant; | |
1755 | size_exp.X_add_number = size; | |
1756 | ||
1757 | rep_exp.X_op = O_multiply; | |
1758 | rep_exp.X_add_symbol = rep_sym; | |
1759 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1760 | rep_exp.X_add_number = 0; | |
1761 | rep_sym = make_expr_symbol (&rep_exp); | |
1762 | } | |
1763 | ||
1764 | p = frag_var (rs_space, (int) size, (int) size, | |
1765 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1766 | } | |
f0e652b4 | 1767 | |
252b5132 | 1768 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 1769 | |
252b5132 | 1770 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
041ff4dd NC |
1771 | flavoured AS. The following bizzare behaviour is to be |
1772 | compatible with above. I guess they tried to take up to 8 | |
1773 | bytes from a 4-byte expression and they forgot to sign | |
1774 | extend. Un*x Sux. */ | |
252b5132 RH |
1775 | #define BSD_FILL_SIZE_CROCK_4 (4) |
1776 | md_number_to_chars (p, (valueT) fill, | |
1777 | (size > BSD_FILL_SIZE_CROCK_4 | |
1778 | ? BSD_FILL_SIZE_CROCK_4 | |
1779 | : (int) size)); | |
1780 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
041ff4dd NC |
1781 | but emits no error message because it seems a legal thing to do. |
1782 | It is a degenerate case of .fill but could be emitted by a | |
1783 | compiler. */ | |
252b5132 RH |
1784 | } |
1785 | demand_empty_rest_of_line (); | |
1786 | } | |
1787 | ||
041ff4dd | 1788 | void |
252b5132 | 1789 | s_globl (ignore) |
ab9da554 | 1790 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1791 | { |
1792 | char *name; | |
1793 | int c; | |
1794 | symbolS *symbolP; | |
1795 | char *stop = NULL; | |
1796 | char stopc; | |
1797 | ||
1798 | if (flag_mri) | |
1799 | stop = mri_comment_field (&stopc); | |
1800 | ||
1801 | do | |
1802 | { | |
1803 | name = input_line_pointer; | |
1804 | c = get_symbol_end (); | |
1805 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
1806 | S_SET_EXTERNAL (symbolP); |
1807 | ||
252b5132 RH |
1808 | *input_line_pointer = c; |
1809 | SKIP_WHITESPACE (); | |
58b5739a | 1810 | c = *input_line_pointer; |
252b5132 RH |
1811 | if (c == ',') |
1812 | { | |
1813 | input_line_pointer++; | |
1814 | SKIP_WHITESPACE (); | |
1815 | if (*input_line_pointer == '\n') | |
1816 | c = '\n'; | |
1817 | } | |
1818 | } | |
1819 | while (c == ','); | |
1820 | ||
1821 | demand_empty_rest_of_line (); | |
1822 | ||
1823 | if (flag_mri) | |
1824 | mri_comment_end (stop, stopc); | |
1825 | } | |
1826 | ||
1827 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
1828 | ||
1829 | void | |
1830 | s_irp (irpc) | |
1831 | int irpc; | |
1832 | { | |
1833 | char *file; | |
1834 | unsigned int line; | |
1835 | sb s; | |
1836 | const char *err; | |
1837 | sb out; | |
1838 | ||
1839 | as_where (&file, &line); | |
1840 | ||
1841 | sb_new (&s); | |
041ff4dd | 1842 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1843 | sb_add_char (&s, *input_line_pointer++); |
1844 | ||
1845 | sb_new (&out); | |
1846 | ||
1847 | err = expand_irp (irpc, 0, &s, &out, get_line_sb, '\0'); | |
1848 | if (err != NULL) | |
1849 | as_bad_where (file, line, "%s", err); | |
1850 | ||
1851 | sb_kill (&s); | |
1852 | ||
9f10757c | 1853 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
1854 | sb_kill (&out); |
1855 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1856 | } | |
1857 | ||
1858 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
1859 | the section to only be linked once. However, this is not supported | |
1860 | by most object file formats. This takes an optional argument, | |
1861 | which is what to do about duplicates. */ | |
1862 | ||
1863 | void | |
1864 | s_linkonce (ignore) | |
ab9da554 | 1865 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1866 | { |
1867 | enum linkonce_type type; | |
1868 | ||
1869 | SKIP_WHITESPACE (); | |
1870 | ||
1871 | type = LINKONCE_DISCARD; | |
1872 | ||
041ff4dd | 1873 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1874 | { |
1875 | char *s; | |
1876 | char c; | |
1877 | ||
1878 | s = input_line_pointer; | |
1879 | c = get_symbol_end (); | |
1880 | if (strcasecmp (s, "discard") == 0) | |
1881 | type = LINKONCE_DISCARD; | |
1882 | else if (strcasecmp (s, "one_only") == 0) | |
1883 | type = LINKONCE_ONE_ONLY; | |
1884 | else if (strcasecmp (s, "same_size") == 0) | |
1885 | type = LINKONCE_SAME_SIZE; | |
1886 | else if (strcasecmp (s, "same_contents") == 0) | |
1887 | type = LINKONCE_SAME_CONTENTS; | |
1888 | else | |
1889 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
1890 | ||
1891 | *input_line_pointer = c; | |
1892 | } | |
1893 | ||
1894 | #ifdef obj_handle_link_once | |
1895 | obj_handle_link_once (type); | |
1896 | #else /* ! defined (obj_handle_link_once) */ | |
1897 | #ifdef BFD_ASSEMBLER | |
1898 | { | |
1899 | flagword flags; | |
1900 | ||
1901 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
1902 | as_warn (_(".linkonce is not supported for this object file format")); | |
1903 | ||
1904 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
1905 | flags |= SEC_LINK_ONCE; | |
1906 | switch (type) | |
1907 | { | |
1908 | default: | |
1909 | abort (); | |
1910 | case LINKONCE_DISCARD: | |
1911 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
1912 | break; | |
1913 | case LINKONCE_ONE_ONLY: | |
1914 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
1915 | break; | |
1916 | case LINKONCE_SAME_SIZE: | |
1917 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
1918 | break; | |
1919 | case LINKONCE_SAME_CONTENTS: | |
1920 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
1921 | break; | |
1922 | } | |
041ff4dd | 1923 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
1924 | as_bad (_("bfd_set_section_flags: %s"), |
1925 | bfd_errmsg (bfd_get_error ())); | |
1926 | } | |
1927 | #else /* ! defined (BFD_ASSEMBLER) */ | |
1928 | as_warn (_(".linkonce is not supported for this object file format")); | |
1929 | #endif /* ! defined (BFD_ASSEMBLER) */ | |
1930 | #endif /* ! defined (obj_handle_link_once) */ | |
1931 | ||
1932 | demand_empty_rest_of_line (); | |
1933 | } | |
1934 | ||
041ff4dd | 1935 | static void |
252b5132 RH |
1936 | s_lcomm_internal (needs_align, bytes_p) |
1937 | /* 1 if this was a ".bss" directive, which may require a 3rd argument | |
041ff4dd | 1938 | (alignment); 0 if it was an ".lcomm" (2 args only). */ |
252b5132 RH |
1939 | int needs_align; |
1940 | /* 1 if the alignment value should be interpreted as the byte boundary, | |
041ff4dd | 1941 | rather than the power of 2. */ |
252b5132 RH |
1942 | int bytes_p; |
1943 | { | |
1944 | register char *name; | |
1945 | register char c; | |
1946 | register char *p; | |
1947 | register int temp; | |
1948 | register symbolS *symbolP; | |
1949 | segT current_seg = now_seg; | |
1950 | subsegT current_subseg = now_subseg; | |
1951 | const int max_alignment = 15; | |
1952 | int align = 0; | |
1953 | segT bss_seg = bss_section; | |
1954 | ||
1955 | name = input_line_pointer; | |
1956 | c = get_symbol_end (); | |
1957 | p = input_line_pointer; | |
1958 | *p = c; | |
1959 | SKIP_WHITESPACE (); | |
1960 | ||
1961 | /* Accept an optional comma after the name. The comma used to be | |
1962 | required, but Irix 5 cc does not generate it. */ | |
1963 | if (*input_line_pointer == ',') | |
1964 | { | |
1965 | ++input_line_pointer; | |
1966 | SKIP_WHITESPACE (); | |
1967 | } | |
1968 | ||
1969 | if (*input_line_pointer == '\n') | |
1970 | { | |
1971 | as_bad (_("Missing size expression")); | |
1972 | return; | |
1973 | } | |
1974 | ||
1975 | if ((temp = get_absolute_expression ()) < 0) | |
1976 | { | |
1977 | as_warn (_("BSS length (%d.) <0! Ignored."), temp); | |
1978 | ignore_rest_of_line (); | |
1979 | return; | |
1980 | } | |
1981 | ||
1982 | #if defined (TC_MIPS) || defined (TC_ALPHA) | |
1983 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
1984 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
1985 | { | |
1986 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
1987 | if (temp <= bfd_get_gp_size (stdoutput)) | |
1988 | { | |
1989 | bss_seg = subseg_new (".sbss", 1); | |
1990 | seg_info (bss_seg)->bss = 1; | |
1991 | #ifdef BFD_ASSEMBLER | |
041ff4dd | 1992 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
1993 | as_warn (_("error setting flags for \".sbss\": %s"), |
1994 | bfd_errmsg (bfd_get_error ())); | |
1995 | #endif | |
1996 | } | |
1997 | } | |
1998 | #endif | |
8684e216 | 1999 | |
041ff4dd NC |
2000 | if (!needs_align) |
2001 | { | |
2002 | TC_IMPLICIT_LCOMM_ALIGNMENT (temp, align); | |
252b5132 | 2003 | |
041ff4dd NC |
2004 | /* Still zero unless TC_IMPLICIT_LCOMM_ALIGNMENT set it. */ |
2005 | if (align) | |
2006 | record_alignment (bss_seg, align); | |
2007 | } | |
252b5132 RH |
2008 | |
2009 | if (needs_align) | |
2010 | { | |
2011 | align = 0; | |
2012 | SKIP_WHITESPACE (); | |
f0e652b4 | 2013 | |
252b5132 RH |
2014 | if (*input_line_pointer != ',') |
2015 | { | |
2016 | as_bad (_("Expected comma after size")); | |
2017 | ignore_rest_of_line (); | |
2018 | return; | |
2019 | } | |
f0e652b4 | 2020 | |
252b5132 RH |
2021 | input_line_pointer++; |
2022 | SKIP_WHITESPACE (); | |
f0e652b4 | 2023 | |
252b5132 RH |
2024 | if (*input_line_pointer == '\n') |
2025 | { | |
2026 | as_bad (_("Missing alignment")); | |
2027 | return; | |
2028 | } | |
f0e652b4 | 2029 | |
252b5132 | 2030 | align = get_absolute_expression (); |
f0e652b4 | 2031 | |
252b5132 RH |
2032 | if (bytes_p) |
2033 | { | |
2034 | /* Convert to a power of 2. */ | |
2035 | if (align != 0) | |
2036 | { | |
2037 | unsigned int i; | |
2038 | ||
2039 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
2040 | ; | |
2041 | if (align != 1) | |
2042 | as_bad (_("Alignment not a power of 2")); | |
2043 | align = i; | |
2044 | } | |
2045 | } | |
f0e652b4 | 2046 | |
252b5132 RH |
2047 | if (align > max_alignment) |
2048 | { | |
2049 | align = max_alignment; | |
2050 | as_warn (_("Alignment too large: %d. assumed."), align); | |
2051 | } | |
2052 | else if (align < 0) | |
2053 | { | |
2054 | align = 0; | |
2055 | as_warn (_("Alignment negative. 0 assumed.")); | |
2056 | } | |
f0e652b4 | 2057 | |
252b5132 | 2058 | record_alignment (bss_seg, align); |
041ff4dd | 2059 | } |
252b5132 RH |
2060 | else |
2061 | { | |
2062 | /* Assume some objects may require alignment on some systems. */ | |
2063 | #if defined (TC_ALPHA) && ! defined (VMS) | |
2064 | if (temp > 1) | |
2065 | { | |
2066 | align = ffs (temp) - 1; | |
2067 | if (temp % (1 << align)) | |
2068 | abort (); | |
2069 | } | |
2070 | #endif | |
2071 | } | |
2072 | ||
2073 | *p = 0; | |
2074 | symbolP = symbol_find_or_make (name); | |
2075 | *p = c; | |
2076 | ||
2077 | if ( | |
4c63da97 AM |
2078 | #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) \ |
2079 | || defined (OBJ_BOUT) || defined (OBJ_MAYBE_BOUT)) | |
2080 | #ifdef BFD_ASSEMBLER | |
2081 | (OUTPUT_FLAVOR != bfd_target_aout_flavour | |
2082 | || (S_GET_OTHER (symbolP) == 0 && S_GET_DESC (symbolP) == 0)) && | |
2083 | #else | |
2084 | (S_GET_OTHER (symbolP) == 0 && S_GET_DESC (symbolP) == 0) && | |
2085 | #endif | |
2086 | #endif | |
2087 | (S_GET_SEGMENT (symbolP) == bss_seg | |
2088 | || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0))) | |
252b5132 RH |
2089 | { |
2090 | char *pfrag; | |
2091 | ||
2092 | subseg_set (bss_seg, 1); | |
2093 | ||
2094 | if (align) | |
2095 | frag_align (align, 0, 0); | |
f0e652b4 | 2096 | |
041ff4dd | 2097 | /* Detach from old frag. */ |
252b5132 | 2098 | if (S_GET_SEGMENT (symbolP) == bss_seg) |
2b47531b | 2099 | symbol_get_frag (symbolP)->fr_symbol = NULL; |
252b5132 | 2100 | |
2b47531b | 2101 | symbol_set_frag (symbolP, frag_now); |
041ff4dd | 2102 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, |
252b5132 RH |
2103 | (offsetT) temp, (char *) 0); |
2104 | *pfrag = 0; | |
2105 | ||
2106 | S_SET_SEGMENT (symbolP, bss_seg); | |
2107 | ||
2108 | #ifdef OBJ_COFF | |
2109 | /* The symbol may already have been created with a preceding | |
2110 | ".globl" directive -- be careful not to step on storage class | |
041ff4dd | 2111 | in that case. Otherwise, set it to static. */ |
252b5132 RH |
2112 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) |
2113 | { | |
2114 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2115 | } | |
2116 | #endif /* OBJ_COFF */ | |
2117 | ||
2118 | #ifdef S_SET_SIZE | |
2119 | S_SET_SIZE (symbolP, temp); | |
2120 | #endif | |
2121 | } | |
2122 | else | |
2123 | as_bad (_("Ignoring attempt to re-define symbol `%s'."), | |
2124 | S_GET_NAME (symbolP)); | |
2125 | ||
2126 | subseg_set (current_seg, current_subseg); | |
2127 | ||
2128 | demand_empty_rest_of_line (); | |
041ff4dd | 2129 | } |
252b5132 RH |
2130 | |
2131 | void | |
2132 | s_lcomm (needs_align) | |
2133 | int needs_align; | |
2134 | { | |
2135 | s_lcomm_internal (needs_align, 0); | |
2136 | } | |
2137 | ||
041ff4dd NC |
2138 | void |
2139 | s_lcomm_bytes (needs_align) | |
252b5132 RH |
2140 | int needs_align; |
2141 | { | |
2142 | s_lcomm_internal (needs_align, 1); | |
2143 | } | |
2144 | ||
041ff4dd | 2145 | void |
252b5132 | 2146 | s_lsym (ignore) |
ab9da554 | 2147 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2148 | { |
2149 | register char *name; | |
2150 | register char c; | |
2151 | register char *p; | |
2152 | expressionS exp; | |
2153 | register symbolS *symbolP; | |
2154 | ||
041ff4dd | 2155 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2156 | name = input_line_pointer; |
2157 | c = get_symbol_end (); | |
2158 | p = input_line_pointer; | |
2159 | *p = c; | |
2160 | SKIP_WHITESPACE (); | |
f0e652b4 | 2161 | |
252b5132 RH |
2162 | if (*input_line_pointer != ',') |
2163 | { | |
2164 | *p = 0; | |
2165 | as_bad (_("Expected comma after name \"%s\""), name); | |
2166 | *p = c; | |
2167 | ignore_rest_of_line (); | |
2168 | return; | |
2169 | } | |
f0e652b4 | 2170 | |
252b5132 RH |
2171 | input_line_pointer++; |
2172 | expression (&exp); | |
f0e652b4 | 2173 | |
252b5132 RH |
2174 | if (exp.X_op != O_constant |
2175 | && exp.X_op != O_register) | |
2176 | { | |
2177 | as_bad (_("bad expression")); | |
2178 | ignore_rest_of_line (); | |
2179 | return; | |
2180 | } | |
f0e652b4 | 2181 | |
252b5132 RH |
2182 | *p = 0; |
2183 | symbolP = symbol_find_or_make (name); | |
2184 | ||
2185 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && | |
2186 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
2187 | those fields, and I can't see when they'd ever be tripped. I | |
2188 | don't think I understand why they were here so I may have | |
2189 | introduced a bug. As recently as 1.37 didn't have this test | |
041ff4dd | 2190 | anyway. xoxorich. */ |
252b5132 RH |
2191 | |
2192 | if (S_GET_SEGMENT (symbolP) == undefined_section | |
2193 | && S_GET_VALUE (symbolP) == 0) | |
2194 | { | |
2195 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2196 | keep the "external" bit. */ |
252b5132 RH |
2197 | S_SET_SEGMENT (symbolP, |
2198 | (exp.X_op == O_constant | |
2199 | ? absolute_section | |
2200 | : reg_section)); | |
2201 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2202 | } | |
2203 | else | |
2204 | { | |
2205 | as_bad (_("Symbol %s already defined"), name); | |
2206 | } | |
f0e652b4 | 2207 | |
252b5132 RH |
2208 | *p = c; |
2209 | demand_empty_rest_of_line (); | |
041ff4dd | 2210 | } |
252b5132 RH |
2211 | |
2212 | /* Read a line into an sb. */ | |
2213 | ||
2214 | static int | |
2215 | get_line_sb (line) | |
2216 | sb *line; | |
2217 | { | |
2218 | char quote1, quote2, inquote; | |
2219 | ||
2220 | if (input_line_pointer[-1] == '\n') | |
2221 | bump_line_counters (); | |
2222 | ||
2223 | if (input_line_pointer >= buffer_limit) | |
2224 | { | |
2225 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2226 | if (buffer_limit == 0) | |
2227 | return 0; | |
2228 | } | |
2229 | ||
2230 | /* If app.c sets any other characters to LEX_IS_STRINGQUOTE, this | |
2231 | code needs to be changed. */ | |
041ff4dd | 2232 | if (!flag_m68k_mri) |
252b5132 RH |
2233 | quote1 = '"'; |
2234 | else | |
2235 | quote1 = '\0'; | |
2236 | ||
2237 | quote2 = '\0'; | |
2238 | if (flag_m68k_mri) | |
2239 | quote2 = '\''; | |
2240 | #ifdef LEX_IS_STRINGQUOTE | |
2241 | quote2 = '\''; | |
2242 | #endif | |
2243 | ||
2244 | inquote = '\0'; | |
f0e652b4 | 2245 | |
041ff4dd | 2246 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2247 | || (inquote != '\0' && *input_line_pointer != '\n')) |
2248 | { | |
2249 | if (inquote == *input_line_pointer) | |
2250 | inquote = '\0'; | |
2251 | else if (inquote == '\0') | |
2252 | { | |
2253 | if (*input_line_pointer == quote1) | |
2254 | inquote = quote1; | |
2255 | else if (*input_line_pointer == quote2) | |
2256 | inquote = quote2; | |
2257 | } | |
f0e652b4 | 2258 | |
252b5132 RH |
2259 | sb_add_char (line, *input_line_pointer++); |
2260 | } | |
f0e652b4 | 2261 | |
252b5132 RH |
2262 | while (input_line_pointer < buffer_limit |
2263 | && is_end_of_line[(unsigned char) *input_line_pointer]) | |
2264 | { | |
2265 | if (input_line_pointer[-1] == '\n') | |
2266 | bump_line_counters (); | |
2267 | ++input_line_pointer; | |
2268 | } | |
f0e652b4 | 2269 | |
252b5132 RH |
2270 | return 1; |
2271 | } | |
2272 | ||
2273 | /* Define a macro. This is an interface to macro.c, which is shared | |
2274 | between gas and gasp. */ | |
2275 | ||
2276 | void | |
2277 | s_macro (ignore) | |
ab9da554 | 2278 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2279 | { |
2280 | char *file; | |
2281 | unsigned int line; | |
2282 | sb s; | |
2283 | sb label; | |
2284 | const char *err; | |
2285 | const char *name; | |
2286 | ||
2287 | as_where (&file, &line); | |
2288 | ||
2289 | sb_new (&s); | |
041ff4dd | 2290 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2291 | sb_add_char (&s, *input_line_pointer++); |
2292 | ||
2293 | sb_new (&label); | |
2294 | if (line_label != NULL) | |
2295 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2296 | ||
2297 | err = define_macro (0, &s, &label, get_line_sb, &name); | |
2298 | if (err != NULL) | |
2299 | as_bad_where (file, line, "%s", err); | |
2300 | else | |
2301 | { | |
2302 | if (line_label != NULL) | |
2303 | { | |
2304 | S_SET_SEGMENT (line_label, undefined_section); | |
2305 | S_SET_VALUE (line_label, 0); | |
2b47531b | 2306 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2307 | } |
2308 | ||
abd63a32 | 2309 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2310 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2311 | || (!flag_m68k_mri |
252b5132 RH |
2312 | && *name == '.' |
2313 | && hash_find (po_hash, name + 1) != NULL)) | |
2314 | as_warn (_("attempt to redefine pseudo-op `%s' ignored"), | |
2315 | name); | |
2316 | } | |
2317 | ||
2318 | sb_kill (&s); | |
2319 | } | |
2320 | ||
2321 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2322 | expansion. */ | |
2323 | ||
2324 | void | |
2325 | s_mexit (ignore) | |
ab9da554 | 2326 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2327 | { |
2328 | cond_exit_macro (macro_nest); | |
2329 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2330 | } | |
2331 | ||
2332 | /* Switch in and out of MRI mode. */ | |
2333 | ||
2334 | void | |
2335 | s_mri (ignore) | |
ab9da554 | 2336 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2337 | { |
2338 | int on, old_flag; | |
2339 | ||
2340 | on = get_absolute_expression (); | |
2341 | old_flag = flag_mri; | |
2342 | if (on != 0) | |
2343 | { | |
2344 | flag_mri = 1; | |
2345 | #ifdef TC_M68K | |
2346 | flag_m68k_mri = 1; | |
2347 | #endif | |
2348 | macro_mri_mode (1); | |
2349 | } | |
2350 | else | |
2351 | { | |
2352 | flag_mri = 0; | |
abd63a32 | 2353 | #ifdef TC_M68K |
252b5132 | 2354 | flag_m68k_mri = 0; |
abd63a32 | 2355 | #endif |
252b5132 RH |
2356 | macro_mri_mode (0); |
2357 | } | |
2358 | ||
2359 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2360 | update the operator rankings. */ | |
2361 | expr_set_precedence (); | |
2362 | ||
2363 | #ifdef MRI_MODE_CHANGE | |
2364 | if (on != old_flag) | |
2365 | MRI_MODE_CHANGE (on); | |
2366 | #endif | |
2367 | ||
2368 | demand_empty_rest_of_line (); | |
2369 | } | |
2370 | ||
2371 | /* Handle changing the location counter. */ | |
2372 | ||
2373 | static void | |
2374 | do_org (segment, exp, fill) | |
2375 | segT segment; | |
2376 | expressionS *exp; | |
2377 | int fill; | |
2378 | { | |
2379 | if (segment != now_seg && segment != absolute_section) | |
2380 | as_bad (_("invalid segment \"%s\"; segment \"%s\" assumed"), | |
2381 | segment_name (segment), segment_name (now_seg)); | |
2382 | ||
2383 | if (now_seg == absolute_section) | |
2384 | { | |
2385 | if (fill != 0) | |
2386 | as_warn (_("ignoring fill value in absolute section")); | |
2387 | if (exp->X_op != O_constant) | |
2388 | { | |
2389 | as_bad (_("only constant offsets supported in absolute section")); | |
2390 | exp->X_add_number = 0; | |
2391 | } | |
2392 | abs_section_offset = exp->X_add_number; | |
2393 | } | |
2394 | else | |
2395 | { | |
2396 | char *p; | |
2397 | ||
2398 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp->X_add_symbol, | |
bea9907b | 2399 | exp->X_add_number * OCTETS_PER_BYTE, (char *) NULL); |
252b5132 RH |
2400 | *p = fill; |
2401 | } | |
2402 | } | |
2403 | ||
041ff4dd | 2404 | void |
252b5132 | 2405 | s_org (ignore) |
ab9da554 | 2406 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2407 | { |
2408 | register segT segment; | |
2409 | expressionS exp; | |
2410 | register long temp_fill; | |
2411 | ||
2412 | #ifdef md_flush_pending_output | |
2413 | md_flush_pending_output (); | |
2414 | #endif | |
2415 | ||
2416 | /* The m68k MRI assembler has a different meaning for .org. It | |
2417 | means to create an absolute section at a given address. We can't | |
2418 | support that--use a linker script instead. */ | |
2419 | if (flag_m68k_mri) | |
2420 | { | |
2421 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2422 | ignore_rest_of_line (); | |
2423 | return; | |
2424 | } | |
2425 | ||
2426 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2427 | thing as a sub-segment-relative origin. Any absolute origin is | |
2428 | given a warning, then assumed to be segment-relative. Any | |
2429 | segmented origin expression ("foo+42") had better be in the right | |
2430 | segment or the .org is ignored. | |
2431 | ||
2432 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2433 | we never know sub-segment sizes when we are reading code. BSD | |
2434 | will crash trying to emit negative numbers of filler bytes in | |
2435 | certain .orgs. We don't crash, but see as-write for that code. | |
2436 | ||
2437 | Don't make frag if need_pass_2==1. */ | |
2438 | segment = get_known_segmented_expression (&exp); | |
2439 | if (*input_line_pointer == ',') | |
2440 | { | |
2441 | input_line_pointer++; | |
2442 | temp_fill = get_absolute_expression (); | |
2443 | } | |
2444 | else | |
2445 | temp_fill = 0; | |
2446 | ||
2447 | if (!need_pass_2) | |
2448 | do_org (segment, &exp, temp_fill); | |
2449 | ||
2450 | demand_empty_rest_of_line (); | |
041ff4dd | 2451 | } |
252b5132 RH |
2452 | |
2453 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2454 | called by the obj-format routine which handles section changing | |
2455 | when in MRI mode. It will create a new section, and return it. It | |
2456 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
2457 | 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the | |
2458 | flags will be set in the section. */ | |
2459 | ||
2460 | void | |
2461 | s_mri_sect (type) | |
ab9da554 | 2462 | char *type ATTRIBUTE_UNUSED; |
252b5132 RH |
2463 | { |
2464 | #ifdef TC_M68K | |
2465 | ||
2466 | char *name; | |
2467 | char c; | |
2468 | segT seg; | |
2469 | ||
2470 | SKIP_WHITESPACE (); | |
041ff4dd | 2471 | |
252b5132 | 2472 | name = input_line_pointer; |
041ff4dd | 2473 | if (!isdigit ((unsigned char) *name)) |
252b5132 RH |
2474 | c = get_symbol_end (); |
2475 | else | |
2476 | { | |
2477 | do | |
2478 | { | |
2479 | ++input_line_pointer; | |
2480 | } | |
2481 | while (isdigit ((unsigned char) *input_line_pointer)); | |
f0e652b4 | 2482 | |
252b5132 RH |
2483 | c = *input_line_pointer; |
2484 | *input_line_pointer = '\0'; | |
2485 | } | |
2486 | ||
2487 | name = xstrdup (name); | |
2488 | ||
2489 | *input_line_pointer = c; | |
2490 | ||
2491 | seg = subseg_new (name, 0); | |
2492 | ||
2493 | if (*input_line_pointer == ',') | |
2494 | { | |
2495 | int align; | |
2496 | ||
2497 | ++input_line_pointer; | |
2498 | align = get_absolute_expression (); | |
2499 | record_alignment (seg, align); | |
2500 | } | |
2501 | ||
2502 | *type = 'C'; | |
2503 | if (*input_line_pointer == ',') | |
2504 | { | |
2505 | c = *++input_line_pointer; | |
2506 | c = toupper ((unsigned char) c); | |
2507 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') | |
2508 | *type = c; | |
2509 | else | |
2510 | as_bad (_("unrecognized section type")); | |
2511 | ++input_line_pointer; | |
2512 | ||
2513 | #ifdef BFD_ASSEMBLER | |
2514 | { | |
2515 | flagword flags; | |
2516 | ||
2517 | flags = SEC_NO_FLAGS; | |
2518 | if (*type == 'C') | |
2519 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2520 | else if (*type == 'D' || *type == 'M') | |
2521 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2522 | else if (*type == 'R') | |
2523 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2524 | if (flags != SEC_NO_FLAGS) | |
2525 | { | |
041ff4dd | 2526 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2527 | as_warn (_("error setting flags for \"%s\": %s"), |
2528 | bfd_section_name (stdoutput, seg), | |
2529 | bfd_errmsg (bfd_get_error ())); | |
2530 | } | |
2531 | } | |
2532 | #endif | |
2533 | } | |
2534 | ||
2535 | /* Ignore the HP type. */ | |
2536 | if (*input_line_pointer == ',') | |
2537 | input_line_pointer += 2; | |
2538 | ||
2539 | demand_empty_rest_of_line (); | |
2540 | ||
2541 | #else /* ! TC_M68K */ | |
2542 | #ifdef TC_I960 | |
2543 | ||
2544 | char *name; | |
2545 | char c; | |
2546 | segT seg; | |
2547 | ||
2548 | SKIP_WHITESPACE (); | |
2549 | ||
2550 | name = input_line_pointer; | |
2551 | c = get_symbol_end (); | |
2552 | ||
2553 | name = xstrdup (name); | |
2554 | ||
2555 | *input_line_pointer = c; | |
2556 | ||
2557 | seg = subseg_new (name, 0); | |
2558 | ||
2559 | if (*input_line_pointer != ',') | |
2560 | *type = 'C'; | |
2561 | else | |
2562 | { | |
2563 | char *sectype; | |
2564 | ||
2565 | ++input_line_pointer; | |
2566 | SKIP_WHITESPACE (); | |
2567 | sectype = input_line_pointer; | |
2568 | c = get_symbol_end (); | |
2569 | if (*sectype == '\0') | |
2570 | *type = 'C'; | |
2571 | else if (strcasecmp (sectype, "text") == 0) | |
2572 | *type = 'C'; | |
2573 | else if (strcasecmp (sectype, "data") == 0) | |
2574 | *type = 'D'; | |
2575 | else if (strcasecmp (sectype, "romdata") == 0) | |
2576 | *type = 'R'; | |
2577 | else | |
2578 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2579 | *input_line_pointer = c; | |
2580 | } | |
2581 | ||
2582 | if (*input_line_pointer == ',') | |
2583 | { | |
2584 | char *seccmd; | |
2585 | ||
2586 | ++input_line_pointer; | |
2587 | SKIP_WHITESPACE (); | |
2588 | seccmd = input_line_pointer; | |
2589 | c = get_symbol_end (); | |
2590 | if (strcasecmp (seccmd, "absolute") == 0) | |
2591 | { | |
2592 | as_bad (_("absolute sections are not supported")); | |
2593 | *input_line_pointer = c; | |
2594 | ignore_rest_of_line (); | |
2595 | return; | |
2596 | } | |
2597 | else if (strcasecmp (seccmd, "align") == 0) | |
2598 | { | |
2599 | int align; | |
2600 | ||
2601 | *input_line_pointer = c; | |
2602 | align = get_absolute_expression (); | |
2603 | record_alignment (seg, align); | |
2604 | } | |
2605 | else | |
2606 | { | |
2607 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2608 | *input_line_pointer = c; | |
2609 | } | |
2610 | } | |
2611 | ||
041ff4dd | 2612 | demand_empty_rest_of_line (); |
252b5132 RH |
2613 | |
2614 | #else /* ! TC_I960 */ | |
2615 | /* The MRI assembler seems to use different forms of .sect for | |
2616 | different targets. */ | |
2617 | as_bad ("MRI mode not supported for this target"); | |
2618 | ignore_rest_of_line (); | |
2619 | #endif /* ! TC_I960 */ | |
2620 | #endif /* ! TC_M68K */ | |
2621 | } | |
2622 | ||
2623 | /* Handle the .print pseudo-op. */ | |
2624 | ||
2625 | void | |
2626 | s_print (ignore) | |
ab9da554 | 2627 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2628 | { |
2629 | char *s; | |
2630 | int len; | |
2631 | ||
2632 | s = demand_copy_C_string (&len); | |
2633 | printf ("%s\n", s); | |
2634 | demand_empty_rest_of_line (); | |
2635 | } | |
2636 | ||
2637 | /* Handle the .purgem pseudo-op. */ | |
2638 | ||
2639 | void | |
2640 | s_purgem (ignore) | |
ab9da554 | 2641 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2642 | { |
2643 | if (is_it_end_of_statement ()) | |
2644 | { | |
2645 | demand_empty_rest_of_line (); | |
2646 | return; | |
2647 | } | |
2648 | ||
2649 | do | |
2650 | { | |
2651 | char *name; | |
2652 | char c; | |
2653 | ||
2654 | SKIP_WHITESPACE (); | |
2655 | name = input_line_pointer; | |
2656 | c = get_symbol_end (); | |
2657 | delete_macro (name); | |
2658 | *input_line_pointer = c; | |
2659 | SKIP_WHITESPACE (); | |
2660 | } | |
2661 | while (*input_line_pointer++ == ','); | |
2662 | ||
2663 | --input_line_pointer; | |
2664 | demand_empty_rest_of_line (); | |
2665 | } | |
2666 | ||
2667 | /* Handle the .rept pseudo-op. */ | |
2668 | ||
2669 | void | |
2670 | s_rept (ignore) | |
ab9da554 | 2671 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2672 | { |
2673 | int count; | |
252b5132 RH |
2674 | |
2675 | count = get_absolute_expression (); | |
2676 | ||
041ff4dd | 2677 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2678 | } |
2679 | ||
2680 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2681 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2682 | |
2683 | void | |
2684 | do_repeat (count, start, end) | |
041ff4dd NC |
2685 | int count; |
2686 | const char *start; | |
2687 | const char *end; | |
6dc19fc4 TW |
2688 | { |
2689 | sb one; | |
2690 | sb many; | |
2691 | ||
252b5132 | 2692 | sb_new (&one); |
041ff4dd | 2693 | if (!buffer_and_nest (start, end, &one, get_line_sb)) |
252b5132 | 2694 | { |
6dc19fc4 | 2695 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2696 | return; |
2697 | } | |
2698 | ||
2699 | sb_new (&many); | |
2700 | while (count-- > 0) | |
2701 | sb_add_sb (&many, &one); | |
2702 | ||
2703 | sb_kill (&one); | |
2704 | ||
9f10757c | 2705 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2706 | sb_kill (&many); |
2707 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2708 | } | |
2709 | ||
6dc19fc4 TW |
2710 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
2711 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 2712 | are properly nested. |
6dc19fc4 TW |
2713 | |
2714 | This function makes it easier to implement a premature "break" out of the | |
2715 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 2716 | such as line substitutions. */ |
6dc19fc4 TW |
2717 | |
2718 | void | |
2719 | end_repeat (extra) | |
041ff4dd | 2720 | int extra; |
6dc19fc4 TW |
2721 | { |
2722 | cond_exit_macro (macro_nest); | |
2723 | while (extra-- >= 0) | |
2724 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2725 | } | |
2726 | ||
252b5132 RH |
2727 | /* Handle the .equ, .equiv and .set directives. If EQUIV is 1, then |
2728 | this is .equiv, and it is an error if the symbol is already | |
2729 | defined. */ | |
2730 | ||
041ff4dd | 2731 | void |
252b5132 RH |
2732 | s_set (equiv) |
2733 | int equiv; | |
2734 | { | |
2735 | register char *name; | |
2736 | register char delim; | |
2737 | register char *end_name; | |
2738 | register symbolS *symbolP; | |
2739 | ||
041ff4dd NC |
2740 | /* Especial apologies for the random logic: |
2741 | this just grew, and could be parsed much more simply! | |
2742 | Dean in haste. */ | |
252b5132 RH |
2743 | name = input_line_pointer; |
2744 | delim = get_symbol_end (); | |
2745 | end_name = input_line_pointer; | |
2746 | *end_name = delim; | |
2747 | SKIP_WHITESPACE (); | |
2748 | ||
2749 | if (*input_line_pointer != ',') | |
2750 | { | |
2751 | *end_name = 0; | |
2752 | as_bad (_("Expected comma after name \"%s\""), name); | |
2753 | *end_name = delim; | |
2754 | ignore_rest_of_line (); | |
2755 | return; | |
2756 | } | |
2757 | ||
2758 | input_line_pointer++; | |
2759 | *end_name = 0; | |
2760 | ||
2761 | if (name[0] == '.' && name[1] == '\0') | |
2762 | { | |
041ff4dd | 2763 | /* Turn '. = mumble' into a .org mumble. */ |
252b5132 RH |
2764 | register segT segment; |
2765 | expressionS exp; | |
2766 | ||
2767 | segment = get_known_segmented_expression (&exp); | |
2768 | ||
2769 | if (!need_pass_2) | |
2770 | do_org (segment, &exp, 0); | |
2771 | ||
2772 | *end_name = delim; | |
2773 | return; | |
2774 | } | |
2775 | ||
2776 | if ((symbolP = symbol_find (name)) == NULL | |
2777 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2778 | { | |
2779 | #ifndef NO_LISTING | |
2780 | /* When doing symbol listings, play games with dummy fragments living | |
2781 | outside the normal fragment chain to record the file and line info | |
2782 | for this symbol. */ | |
2783 | if (listing & LISTING_SYMBOLS) | |
2784 | { | |
2785 | extern struct list_info_struct *listing_tail; | |
041ff4dd NC |
2786 | fragS *dummy_frag = (fragS *) xmalloc (sizeof (fragS)); |
2787 | memset (dummy_frag, 0, sizeof (fragS)); | |
252b5132 RH |
2788 | dummy_frag->fr_type = rs_fill; |
2789 | dummy_frag->line = listing_tail; | |
2790 | symbolP = symbol_new (name, undefined_section, 0, dummy_frag); | |
2791 | dummy_frag->fr_symbol = symbolP; | |
2792 | } | |
2793 | else | |
2794 | #endif | |
041ff4dd NC |
2795 | symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag); |
2796 | ||
252b5132 | 2797 | #ifdef OBJ_COFF |
041ff4dd | 2798 | /* "set" symbols are local unless otherwise specified. */ |
252b5132 RH |
2799 | SF_SET_LOCAL (symbolP); |
2800 | #endif /* OBJ_COFF */ | |
041ff4dd | 2801 | } |
252b5132 RH |
2802 | |
2803 | symbol_table_insert (symbolP); | |
2804 | ||
2805 | *end_name = delim; | |
2806 | ||
2807 | if (equiv | |
2808 | && S_IS_DEFINED (symbolP) | |
2809 | && S_GET_SEGMENT (symbolP) != reg_section) | |
2810 | as_bad (_("symbol `%s' already defined"), S_GET_NAME (symbolP)); | |
2811 | ||
2812 | pseudo_set (symbolP); | |
2813 | demand_empty_rest_of_line (); | |
041ff4dd | 2814 | } |
252b5132 | 2815 | |
041ff4dd | 2816 | void |
252b5132 RH |
2817 | s_space (mult) |
2818 | int mult; | |
2819 | { | |
2820 | expressionS exp; | |
2821 | expressionS val; | |
2822 | char *p = 0; | |
2823 | char *stop = NULL; | |
2824 | char stopc; | |
2825 | int bytes; | |
2826 | ||
2827 | #ifdef md_flush_pending_output | |
2828 | md_flush_pending_output (); | |
2829 | #endif | |
2830 | ||
2831 | if (flag_mri) | |
2832 | stop = mri_comment_field (&stopc); | |
2833 | ||
2834 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
2835 | this is ds.b. */ | |
2836 | if (flag_m68k_mri && mult > 1) | |
2837 | { | |
2838 | if (now_seg == absolute_section) | |
2839 | { | |
2840 | abs_section_offset += abs_section_offset & 1; | |
2841 | if (line_label != NULL) | |
2842 | S_SET_VALUE (line_label, abs_section_offset); | |
2843 | } | |
2844 | else if (mri_common_symbol != NULL) | |
2845 | { | |
2846 | valueT val; | |
2847 | ||
2848 | val = S_GET_VALUE (mri_common_symbol); | |
2849 | if ((val & 1) != 0) | |
2850 | { | |
2851 | S_SET_VALUE (mri_common_symbol, val + 1); | |
2852 | if (line_label != NULL) | |
2853 | { | |
2b47531b ILT |
2854 | expressionS *symexp; |
2855 | ||
2856 | symexp = symbol_get_value_expression (line_label); | |
2857 | know (symexp->X_op == O_symbol); | |
2858 | know (symexp->X_add_symbol == mri_common_symbol); | |
2859 | symexp->X_add_number += 1; | |
252b5132 RH |
2860 | } |
2861 | } | |
2862 | } | |
2863 | else | |
2864 | { | |
2865 | do_align (1, (char *) NULL, 0, 0); | |
2866 | if (line_label != NULL) | |
2867 | { | |
2b47531b | 2868 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
2869 | S_SET_VALUE (line_label, frag_now_fix ()); |
2870 | } | |
2871 | } | |
2872 | } | |
2873 | ||
2874 | bytes = mult; | |
2875 | ||
2876 | expression (&exp); | |
2877 | ||
2878 | SKIP_WHITESPACE (); | |
2879 | if (*input_line_pointer == ',') | |
2880 | { | |
2881 | ++input_line_pointer; | |
2882 | expression (&val); | |
2883 | } | |
2884 | else | |
2885 | { | |
2886 | val.X_op = O_constant; | |
2887 | val.X_add_number = 0; | |
2888 | } | |
2889 | ||
2890 | if (val.X_op != O_constant | |
2891 | || val.X_add_number < - 0x80 | |
2892 | || val.X_add_number > 0xff | |
2893 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
2894 | { | |
2895 | if (exp.X_op != O_constant) | |
2896 | as_bad (_("Unsupported variable size or fill value")); | |
2897 | else | |
2898 | { | |
2899 | offsetT i; | |
2900 | ||
2901 | if (mult == 0) | |
2902 | mult = 1; | |
2903 | bytes = mult * exp.X_add_number; | |
2904 | for (i = 0; i < exp.X_add_number; i++) | |
2905 | emit_expr (&val, mult); | |
2906 | } | |
2907 | } | |
2908 | else | |
2909 | { | |
2910 | if (exp.X_op == O_constant) | |
2911 | { | |
2912 | long repeat; | |
2913 | ||
2914 | repeat = exp.X_add_number; | |
2915 | if (mult) | |
2916 | repeat *= mult; | |
2917 | bytes = repeat; | |
2918 | if (repeat <= 0) | |
2919 | { | |
041ff4dd | 2920 | if (!flag_mri) |
252b5132 RH |
2921 | as_warn (_(".space repeat count is zero, ignored")); |
2922 | else if (repeat < 0) | |
2923 | as_warn (_(".space repeat count is negative, ignored")); | |
2924 | goto getout; | |
2925 | } | |
2926 | ||
2927 | /* If we are in the absolute section, just bump the offset. */ | |
2928 | if (now_seg == absolute_section) | |
2929 | { | |
2930 | abs_section_offset += repeat; | |
2931 | goto getout; | |
2932 | } | |
2933 | ||
2934 | /* If we are secretly in an MRI common section, then | |
2935 | creating space just increases the size of the common | |
2936 | symbol. */ | |
2937 | if (mri_common_symbol != NULL) | |
2938 | { | |
2939 | S_SET_VALUE (mri_common_symbol, | |
2940 | S_GET_VALUE (mri_common_symbol) + repeat); | |
2941 | goto getout; | |
2942 | } | |
2943 | ||
2944 | if (!need_pass_2) | |
2945 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
2946 | (offsetT) repeat, (char *) 0); | |
2947 | } | |
2948 | else | |
2949 | { | |
2950 | if (now_seg == absolute_section) | |
2951 | { | |
2952 | as_bad (_("space allocation too complex in absolute section")); | |
2953 | subseg_set (text_section, 0); | |
2954 | } | |
f0e652b4 | 2955 | |
252b5132 RH |
2956 | if (mri_common_symbol != NULL) |
2957 | { | |
2958 | as_bad (_("space allocation too complex in common section")); | |
2959 | mri_common_symbol = NULL; | |
2960 | } | |
f0e652b4 | 2961 | |
252b5132 RH |
2962 | if (!need_pass_2) |
2963 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
2964 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
2965 | } | |
2966 | ||
2967 | if (p) | |
2968 | *p = val.X_add_number; | |
2969 | } | |
2970 | ||
2971 | getout: | |
2972 | ||
2973 | /* In MRI mode, after an odd number of bytes, we must align to an | |
2974 | even word boundary, unless the next instruction is a dc.b, ds.b | |
2975 | or dcb.b. */ | |
2976 | if (flag_mri && (bytes & 1) != 0) | |
2977 | mri_pending_align = 1; | |
2978 | ||
2979 | demand_empty_rest_of_line (); | |
2980 | ||
2981 | if (flag_mri) | |
2982 | mri_comment_end (stop, stopc); | |
2983 | } | |
2984 | ||
2985 | /* This is like s_space, but the value is a floating point number with | |
2986 | the given precision. This is for the MRI dcb.s pseudo-op and | |
2987 | friends. */ | |
2988 | ||
2989 | void | |
2990 | s_float_space (float_type) | |
2991 | int float_type; | |
2992 | { | |
2993 | offsetT count; | |
2994 | int flen; | |
2995 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
2996 | char *stop = NULL; | |
2997 | char stopc; | |
2998 | ||
2999 | if (flag_mri) | |
3000 | stop = mri_comment_field (&stopc); | |
3001 | ||
3002 | count = get_absolute_expression (); | |
3003 | ||
3004 | SKIP_WHITESPACE (); | |
3005 | if (*input_line_pointer != ',') | |
3006 | { | |
3007 | as_bad (_("missing value")); | |
3008 | ignore_rest_of_line (); | |
3009 | if (flag_mri) | |
3010 | mri_comment_end (stop, stopc); | |
3011 | return; | |
3012 | } | |
3013 | ||
3014 | ++input_line_pointer; | |
3015 | ||
3016 | SKIP_WHITESPACE (); | |
3017 | ||
3018 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3019 | * letter is legal. */ | |
3020 | if (input_line_pointer[0] == '0' | |
3021 | && isalpha ((unsigned char) input_line_pointer[1])) | |
3022 | input_line_pointer += 2; | |
3023 | ||
3024 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3025 | with the exact digits specified. */ | |
3026 | if (input_line_pointer[0] == ':') | |
3027 | { | |
3028 | flen = hex_float (float_type, temp); | |
3029 | if (flen < 0) | |
3030 | { | |
3031 | ignore_rest_of_line (); | |
3032 | if (flag_mri) | |
3033 | mri_comment_end (stop, stopc); | |
3034 | return; | |
3035 | } | |
3036 | } | |
3037 | else | |
3038 | { | |
3039 | char *err; | |
3040 | ||
3041 | err = md_atof (float_type, temp, &flen); | |
3042 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3043 | know (flen > 0); | |
3044 | if (err) | |
3045 | { | |
3046 | as_bad (_("Bad floating literal: %s"), err); | |
3047 | ignore_rest_of_line (); | |
3048 | if (flag_mri) | |
3049 | mri_comment_end (stop, stopc); | |
3050 | return; | |
3051 | } | |
3052 | } | |
3053 | ||
3054 | while (--count >= 0) | |
3055 | { | |
3056 | char *p; | |
3057 | ||
3058 | p = frag_more (flen); | |
3059 | memcpy (p, temp, (unsigned int) flen); | |
3060 | } | |
3061 | ||
3062 | demand_empty_rest_of_line (); | |
3063 | ||
3064 | if (flag_mri) | |
3065 | mri_comment_end (stop, stopc); | |
3066 | } | |
3067 | ||
3068 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3069 | ||
3070 | void | |
3071 | s_struct (ignore) | |
ab9da554 | 3072 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3073 | { |
3074 | char *stop = NULL; | |
3075 | char stopc; | |
3076 | ||
3077 | if (flag_mri) | |
3078 | stop = mri_comment_field (&stopc); | |
3079 | abs_section_offset = get_absolute_expression (); | |
3080 | subseg_set (absolute_section, 0); | |
3081 | demand_empty_rest_of_line (); | |
3082 | if (flag_mri) | |
3083 | mri_comment_end (stop, stopc); | |
3084 | } | |
3085 | ||
3086 | void | |
3087 | s_text (ignore) | |
ab9da554 | 3088 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3089 | { |
3090 | register int temp; | |
3091 | ||
3092 | temp = get_absolute_expression (); | |
3093 | subseg_set (text_section, (subsegT) temp); | |
3094 | demand_empty_rest_of_line (); | |
3095 | #ifdef OBJ_VMS | |
3096 | const_flag &= ~IN_DEFAULT_SECTION; | |
3097 | #endif | |
041ff4dd | 3098 | } |
252b5132 | 3099 | \f |
041ff4dd | 3100 | void |
252b5132 RH |
3101 | demand_empty_rest_of_line () |
3102 | { | |
3103 | SKIP_WHITESPACE (); | |
3104 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3105 | input_line_pointer++; |
252b5132 | 3106 | else |
041ff4dd NC |
3107 | ignore_rest_of_line (); |
3108 | ||
3109 | /* Return having already swallowed end-of-line. */ | |
3110 | } | |
252b5132 RH |
3111 | |
3112 | void | |
041ff4dd | 3113 | ignore_rest_of_line () |
252b5132 | 3114 | { |
041ff4dd | 3115 | /* For suspect lines: gives warning. */ |
252b5132 RH |
3116 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
3117 | { | |
3118 | if (isprint ((unsigned char) *input_line_pointer)) | |
3119 | as_bad (_("Rest of line ignored. First ignored character is `%c'."), | |
3120 | *input_line_pointer); | |
3121 | else | |
3122 | as_bad (_("Rest of line ignored. First ignored character valued 0x%x."), | |
3123 | *input_line_pointer); | |
f0e652b4 | 3124 | |
252b5132 RH |
3125 | while (input_line_pointer < buffer_limit |
3126 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3127 | input_line_pointer++; |
252b5132 | 3128 | } |
f0e652b4 | 3129 | |
041ff4dd NC |
3130 | input_line_pointer++; |
3131 | ||
3132 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3133 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3134 | } | |
3135 | ||
3136 | void | |
3137 | discard_rest_of_line () | |
3138 | { | |
3139 | while (input_line_pointer < buffer_limit | |
041ff4dd NC |
3140 | && !is_end_of_line[(unsigned char) *input_line_pointer]) |
3141 | input_line_pointer++; | |
3142 | ||
3143 | input_line_pointer++; | |
f0e652b4 | 3144 | |
041ff4dd | 3145 | /* Return pointing just after end-of-line. */ |
252b5132 RH |
3146 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3147 | } | |
3148 | ||
041ff4dd NC |
3149 | /* In: Pointer to a symbol. |
3150 | Input_line_pointer->expression. | |
f0e652b4 | 3151 | |
041ff4dd NC |
3152 | Out: Input_line_pointer->just after any whitespace after expression. |
3153 | Tried to set symbol to value of expression. | |
3154 | Will change symbols type, value, and frag; */ | |
3155 | ||
252b5132 RH |
3156 | void |
3157 | pseudo_set (symbolP) | |
3158 | symbolS *symbolP; | |
3159 | { | |
3160 | expressionS exp; | |
3161 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3162 | int ext; | |
3163 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3164 | ||
041ff4dd | 3165 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 RH |
3166 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
3167 | ext = S_IS_EXTERNAL (symbolP); | |
3168 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3169 | ||
3170 | (void) expression (&exp); | |
3171 | ||
3172 | if (exp.X_op == O_illegal) | |
3173 | as_bad (_("illegal expression; zero assumed")); | |
3174 | else if (exp.X_op == O_absent) | |
3175 | as_bad (_("missing expression; zero assumed")); | |
3176 | else if (exp.X_op == O_big) | |
3177 | { | |
3178 | if (exp.X_add_number > 0) | |
3179 | as_bad (_("bignum invalid; zero assumed")); | |
3180 | else | |
3181 | as_bad (_("floating point number invalid; zero assumed")); | |
3182 | } | |
3183 | else if (exp.X_op == O_subtract | |
3184 | && (S_GET_SEGMENT (exp.X_add_symbol) | |
3185 | == S_GET_SEGMENT (exp.X_op_symbol)) | |
3186 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) | |
2b47531b ILT |
3187 | && (symbol_get_frag (exp.X_add_symbol) |
3188 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3189 | { |
3190 | exp.X_op = O_constant; | |
3191 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3192 | - S_GET_VALUE (exp.X_op_symbol)); | |
3193 | } | |
3194 | ||
3195 | switch (exp.X_op) | |
3196 | { | |
3197 | case O_illegal: | |
3198 | case O_absent: | |
3199 | case O_big: | |
3200 | exp.X_add_number = 0; | |
3201 | /* Fall through. */ | |
3202 | case O_constant: | |
3203 | S_SET_SEGMENT (symbolP, absolute_section); | |
3204 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3205 | if (ext) | |
3206 | S_SET_EXTERNAL (symbolP); | |
3207 | else | |
3208 | S_CLEAR_EXTERNAL (symbolP); | |
3209 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3210 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
3211 | if (exp.X_op != O_constant) | |
041ff4dd | 3212 | symbol_set_frag (symbolP, &zero_address_frag); |
252b5132 RH |
3213 | break; |
3214 | ||
3215 | case O_register: | |
3216 | S_SET_SEGMENT (symbolP, reg_section); | |
3217 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2b47531b | 3218 | symbol_set_frag (symbolP, &zero_address_frag); |
252b5132 RH |
3219 | break; |
3220 | ||
3221 | case O_symbol: | |
3222 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section | |
3223 | || exp.X_add_number != 0) | |
2b47531b | 3224 | symbol_set_value_expression (symbolP, &exp); |
53b0d397 ILT |
3225 | else if (symbol_section_p (symbolP)) |
3226 | as_bad ("invalid attempt to set value of section symbol"); | |
252b5132 RH |
3227 | else |
3228 | { | |
3229 | symbolS *s = exp.X_add_symbol; | |
3230 | ||
3231 | S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s)); | |
3232 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3233 | if (ext) | |
3234 | S_SET_EXTERNAL (symbolP); | |
3235 | else | |
3236 | S_CLEAR_EXTERNAL (symbolP); | |
3237 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3238 | S_SET_VALUE (symbolP, | |
3239 | exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3240 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 RH |
3241 | copy_symbol_attributes (symbolP, s); |
3242 | } | |
3243 | break; | |
3244 | ||
3245 | default: | |
3246 | /* The value is some complex expression. | |
3247 | FIXME: Should we set the segment to anything? */ | |
2b47531b | 3248 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
3249 | break; |
3250 | } | |
3251 | } | |
3252 | \f | |
041ff4dd | 3253 | /* cons() |
f0e652b4 | 3254 | |
041ff4dd NC |
3255 | CONStruct more frag of .bytes, or .words etc. |
3256 | Should need_pass_2 be 1 then emit no frag(s). | |
3257 | This understands EXPRESSIONS. | |
f0e652b4 | 3258 | |
041ff4dd | 3259 | Bug (?) |
f0e652b4 | 3260 | |
041ff4dd NC |
3261 | This has a split personality. We use expression() to read the |
3262 | value. We can detect if the value won't fit in a byte or word. | |
3263 | But we can't detect if expression() discarded significant digits | |
3264 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3265 | |
3266 | /* Select a parser for cons expressions. */ | |
3267 | ||
3268 | /* Some targets need to parse the expression in various fancy ways. | |
3269 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3270 | (for example, the HPPA does this). Otherwise, you can define | |
3271 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3272 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3273 | are defined, which is the normal case, then only simple expressions | |
3274 | are permitted. */ | |
3275 | ||
abd63a32 | 3276 | #ifdef TC_M68K |
252b5132 RH |
3277 | static void |
3278 | parse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
abd63a32 | 3279 | #endif |
252b5132 RH |
3280 | |
3281 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3282 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3283 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3284 | static void |
252b5132 RH |
3285 | parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes)); |
3286 | #endif | |
3287 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3288 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3289 | static void | |
3290 | parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
3291 | #endif | |
3292 | ||
3293 | /* If we haven't gotten one yet, just call expression. */ | |
3294 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3295 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3296 | #endif | |
3297 | #endif | |
3298 | ||
041ff4dd NC |
3299 | /* Worker to do .byte etc statements. |
3300 | Clobbers input_line_pointer and checks end-of-line. */ | |
3301 | ||
3302 | static void | |
252b5132 | 3303 | cons_worker (nbytes, rva) |
041ff4dd | 3304 | register int nbytes; /* 1=.byte, 2=.word, 4=.long. */ |
252b5132 RH |
3305 | int rva; |
3306 | { | |
3307 | int c; | |
3308 | expressionS exp; | |
3309 | char *stop = NULL; | |
3310 | char stopc; | |
3311 | ||
3312 | #ifdef md_flush_pending_output | |
3313 | md_flush_pending_output (); | |
3314 | #endif | |
3315 | ||
3316 | if (flag_mri) | |
3317 | stop = mri_comment_field (&stopc); | |
3318 | ||
3319 | if (is_it_end_of_statement ()) | |
3320 | { | |
3321 | demand_empty_rest_of_line (); | |
3322 | if (flag_mri) | |
3323 | mri_comment_end (stop, stopc); | |
3324 | return; | |
3325 | } | |
3326 | ||
3327 | #ifdef md_cons_align | |
3328 | md_cons_align (nbytes); | |
3329 | #endif | |
3330 | ||
3331 | c = 0; | |
3332 | do | |
3333 | { | |
abd63a32 | 3334 | #ifdef TC_M68K |
252b5132 RH |
3335 | if (flag_m68k_mri) |
3336 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3337 | else | |
abd63a32 | 3338 | #endif |
252b5132 RH |
3339 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
3340 | ||
3341 | if (rva) | |
3342 | { | |
3343 | if (exp.X_op == O_symbol) | |
3344 | exp.X_op = O_symbol_rva; | |
3345 | else | |
3346 | as_fatal (_("rva without symbol")); | |
3347 | } | |
3348 | emit_expr (&exp, (unsigned int) nbytes); | |
3349 | ++c; | |
3350 | } | |
3351 | while (*input_line_pointer++ == ','); | |
3352 | ||
3353 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3354 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3355 | or dcb.b. */ | |
3356 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3357 | mri_pending_align = 1; | |
3358 | ||
041ff4dd | 3359 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3360 | |
3361 | demand_empty_rest_of_line (); | |
3362 | ||
3363 | if (flag_mri) | |
3364 | mri_comment_end (stop, stopc); | |
3365 | } | |
3366 | ||
252b5132 RH |
3367 | void |
3368 | cons (size) | |
3369 | int size; | |
3370 | { | |
3371 | cons_worker (size, 0); | |
3372 | } | |
3373 | ||
041ff4dd | 3374 | void |
252b5132 RH |
3375 | s_rva (size) |
3376 | int size; | |
3377 | { | |
3378 | cons_worker (size, 1); | |
3379 | } | |
3380 | ||
3381 | /* Put the contents of expression EXP into the object file using | |
3382 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
3383 | ||
3384 | void | |
3385 | emit_expr (exp, nbytes) | |
3386 | expressionS *exp; | |
3387 | unsigned int nbytes; | |
3388 | { | |
3389 | operatorT op; | |
3390 | register char *p; | |
3391 | valueT extra_digit = 0; | |
3392 | ||
3393 | /* Don't do anything if we are going to make another pass. */ | |
3394 | if (need_pass_2) | |
3395 | return; | |
3396 | ||
3397 | #ifndef NO_LISTING | |
3398 | #ifdef OBJ_ELF | |
3399 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
3400 | appear as a four byte positive constant in the .line section, | |
3401 | followed by a 2 byte 0xffff. Look for that case here. */ | |
3402 | { | |
3403 | static int dwarf_line = -1; | |
3404 | ||
3405 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
3406 | dwarf_line = -1; | |
3407 | else if (dwarf_line >= 0 | |
3408 | && nbytes == 2 | |
3409 | && exp->X_op == O_constant | |
3410 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
3411 | listing_source_line ((unsigned int) dwarf_line); | |
3412 | else if (nbytes == 4 | |
3413 | && exp->X_op == O_constant | |
3414 | && exp->X_add_number >= 0) | |
3415 | dwarf_line = exp->X_add_number; | |
3416 | else | |
3417 | dwarf_line = -1; | |
3418 | } | |
3419 | ||
3420 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
3421 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
3422 | AT_sibling (0x12) followed by a four byte address of the sibling | |
3423 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
3424 | file. We look for that case here. */ | |
3425 | { | |
3426 | static int dwarf_file = 0; | |
3427 | ||
3428 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
3429 | dwarf_file = 0; | |
3430 | else if (dwarf_file == 0 | |
3431 | && nbytes == 2 | |
3432 | && exp->X_op == O_constant | |
3433 | && exp->X_add_number == 0x11) | |
3434 | dwarf_file = 1; | |
3435 | else if (dwarf_file == 1 | |
3436 | && nbytes == 2 | |
3437 | && exp->X_op == O_constant | |
3438 | && exp->X_add_number == 0x12) | |
3439 | dwarf_file = 2; | |
3440 | else if (dwarf_file == 2 | |
3441 | && nbytes == 4) | |
3442 | dwarf_file = 3; | |
3443 | else if (dwarf_file == 3 | |
3444 | && nbytes == 2 | |
3445 | && exp->X_op == O_constant | |
3446 | && exp->X_add_number == 0x38) | |
3447 | dwarf_file = 4; | |
3448 | else | |
3449 | dwarf_file = 0; | |
3450 | ||
3451 | /* The variable dwarf_file_string tells stringer that the string | |
3452 | may be the name of the source file. */ | |
3453 | if (dwarf_file == 4) | |
3454 | dwarf_file_string = 1; | |
3455 | else | |
3456 | dwarf_file_string = 0; | |
3457 | } | |
3458 | #endif | |
3459 | #endif | |
3460 | ||
3461 | if (check_eh_frame (exp, &nbytes)) | |
3462 | return; | |
3463 | ||
3464 | op = exp->X_op; | |
3465 | ||
3466 | /* Allow `.word 0' in the absolute section. */ | |
3467 | if (now_seg == absolute_section) | |
3468 | { | |
3469 | if (op != O_constant || exp->X_add_number != 0) | |
3470 | as_bad (_("attempt to store value in absolute section")); | |
3471 | abs_section_offset += nbytes; | |
3472 | return; | |
3473 | } | |
3474 | ||
3475 | /* Handle a negative bignum. */ | |
3476 | if (op == O_uminus | |
3477 | && exp->X_add_number == 0 | |
2b47531b ILT |
3478 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
3479 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
3480 | { |
3481 | int i; | |
3482 | unsigned long carry; | |
3483 | ||
2b47531b | 3484 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
3485 | |
3486 | /* Negate the bignum: one's complement each digit and add 1. */ | |
3487 | carry = 1; | |
3488 | for (i = 0; i < exp->X_add_number; i++) | |
3489 | { | |
3490 | unsigned long next; | |
3491 | ||
041ff4dd | 3492 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
3493 | & LITTLENUM_MASK) |
3494 | + carry); | |
3495 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3496 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3497 | } | |
3498 | ||
3499 | /* We can ignore any carry out, because it will be handled by | |
3500 | extra_digit if it is needed. */ | |
3501 | ||
3502 | extra_digit = (valueT) -1; | |
3503 | op = O_big; | |
3504 | } | |
3505 | ||
3506 | if (op == O_absent || op == O_illegal) | |
3507 | { | |
3508 | as_warn (_("zero assumed for missing expression")); | |
3509 | exp->X_add_number = 0; | |
3510 | op = O_constant; | |
3511 | } | |
3512 | else if (op == O_big && exp->X_add_number <= 0) | |
3513 | { | |
3514 | as_bad (_("floating point number invalid; zero assumed")); | |
3515 | exp->X_add_number = 0; | |
3516 | op = O_constant; | |
3517 | } | |
3518 | else if (op == O_register) | |
3519 | { | |
3520 | as_warn (_("register value used as expression")); | |
3521 | op = O_constant; | |
3522 | } | |
3523 | ||
3524 | p = frag_more ((int) nbytes); | |
3525 | ||
3526 | #ifndef WORKING_DOT_WORD | |
3527 | /* If we have the difference of two symbols in a word, save it on | |
3528 | the broken_words list. See the code in write.c. */ | |
3529 | if (op == O_subtract && nbytes == 2) | |
3530 | { | |
3531 | struct broken_word *x; | |
3532 | ||
3533 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3534 | x->next_broken_word = broken_words; | |
3535 | broken_words = x; | |
3536 | x->seg = now_seg; | |
3537 | x->subseg = now_subseg; | |
3538 | x->frag = frag_now; | |
3539 | x->word_goes_here = p; | |
3540 | x->dispfrag = 0; | |
3541 | x->add = exp->X_add_symbol; | |
3542 | x->sub = exp->X_op_symbol; | |
3543 | x->addnum = exp->X_add_number; | |
3544 | x->added = 0; | |
3545 | new_broken_words++; | |
3546 | return; | |
3547 | } | |
3548 | #endif | |
3549 | ||
3550 | /* If we have an integer, but the number of bytes is too large to | |
3551 | pass to md_number_to_chars, handle it as a bignum. */ | |
3552 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3553 | { | |
3554 | valueT val; | |
3555 | int gencnt; | |
3556 | ||
041ff4dd | 3557 | if (!exp->X_unsigned && exp->X_add_number < 0) |
252b5132 RH |
3558 | extra_digit = (valueT) -1; |
3559 | val = (valueT) exp->X_add_number; | |
3560 | gencnt = 0; | |
3561 | do | |
3562 | { | |
3563 | generic_bignum[gencnt] = val & LITTLENUM_MASK; | |
3564 | val >>= LITTLENUM_NUMBER_OF_BITS; | |
3565 | ++gencnt; | |
3566 | } | |
3567 | while (val != 0); | |
3568 | op = exp->X_op = O_big; | |
3569 | exp->X_add_number = gencnt; | |
3570 | } | |
3571 | ||
3572 | if (op == O_constant) | |
3573 | { | |
3574 | register valueT get; | |
3575 | register valueT use; | |
3576 | register valueT mask; | |
3577 | valueT hibit; | |
3578 | register valueT unmask; | |
3579 | ||
3580 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 3581 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
3582 | if (nbytes >= sizeof (valueT)) |
3583 | { | |
3584 | mask = 0; | |
3585 | if (nbytes > sizeof (valueT)) | |
3586 | hibit = 0; | |
3587 | else | |
3588 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3589 | } | |
3590 | else | |
3591 | { | |
041ff4dd | 3592 | /* Don't store these bits. */ |
252b5132 RH |
3593 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
3594 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3595 | } | |
3596 | ||
041ff4dd | 3597 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
3598 | |
3599 | #ifdef NEVER | |
3600 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 3601 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
3602 | #endif |
3603 | ||
3604 | get = exp->X_add_number; | |
3605 | use = get & unmask; | |
3606 | if ((get & mask) != 0 | |
3607 | && ((get & mask) != mask | |
3608 | || (get & hibit) == 0)) | |
041ff4dd | 3609 | { /* Leading bits contain both 0s & 1s. */ |
252b5132 RH |
3610 | as_warn (_("Value 0x%lx truncated to 0x%lx."), |
3611 | (unsigned long) get, (unsigned long) use); | |
3612 | } | |
041ff4dd | 3613 | /* Put bytes in right order. */ |
252b5132 RH |
3614 | md_number_to_chars (p, use, (int) nbytes); |
3615 | } | |
3616 | else if (op == O_big) | |
3617 | { | |
3618 | unsigned int size; | |
3619 | LITTLENUM_TYPE *nums; | |
3620 | ||
3621 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
3622 | ||
3623 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
3624 | if (nbytes < size) | |
3625 | { | |
3626 | as_warn (_("Bignum truncated to %d bytes"), nbytes); | |
3627 | size = nbytes; | |
3628 | } | |
3629 | ||
3630 | if (target_big_endian) | |
3631 | { | |
3632 | while (nbytes > size) | |
3633 | { | |
3634 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3635 | nbytes -= CHARS_PER_LITTLENUM; | |
3636 | p += CHARS_PER_LITTLENUM; | |
3637 | } | |
3638 | ||
3639 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
3640 | while (size > 0) | |
3641 | { | |
3642 | --nums; | |
3643 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3644 | size -= CHARS_PER_LITTLENUM; | |
3645 | p += CHARS_PER_LITTLENUM; | |
3646 | } | |
3647 | } | |
3648 | else | |
3649 | { | |
3650 | nums = generic_bignum; | |
3651 | while (size > 0) | |
3652 | { | |
3653 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3654 | ++nums; | |
3655 | size -= CHARS_PER_LITTLENUM; | |
3656 | p += CHARS_PER_LITTLENUM; | |
3657 | nbytes -= CHARS_PER_LITTLENUM; | |
3658 | } | |
3659 | ||
3660 | while (nbytes > 0) | |
3661 | { | |
3662 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3663 | nbytes -= CHARS_PER_LITTLENUM; | |
3664 | p += CHARS_PER_LITTLENUM; | |
3665 | } | |
3666 | } | |
3667 | } | |
3668 | else | |
3669 | { | |
3670 | memset (p, 0, nbytes); | |
3671 | ||
3672 | /* Now we need to generate a fixS to record the symbol value. | |
3673 | This is easy for BFD. For other targets it can be more | |
3674 | complex. For very complex cases (currently, the HPPA and | |
3675 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
3676 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
3677 | the name of the reloc code that should be stored in the fixS. | |
3678 | If neither is defined, the code uses NO_RELOC if it is | |
3679 | defined, and otherwise uses 0. */ | |
3680 | ||
3681 | #ifdef BFD_ASSEMBLER | |
3682 | #ifdef TC_CONS_FIX_NEW | |
3683 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3684 | #else | |
3685 | { | |
3686 | bfd_reloc_code_real_type r; | |
3687 | ||
3688 | switch (nbytes) | |
3689 | { | |
3690 | case 1: | |
3691 | r = BFD_RELOC_8; | |
3692 | break; | |
3693 | case 2: | |
3694 | r = BFD_RELOC_16; | |
3695 | break; | |
3696 | case 4: | |
3697 | r = BFD_RELOC_32; | |
3698 | break; | |
3699 | case 8: | |
3700 | r = BFD_RELOC_64; | |
3701 | break; | |
3702 | default: | |
3703 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
3704 | r = BFD_RELOC_32; | |
3705 | break; | |
3706 | } | |
3707 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, | |
3708 | 0, r); | |
3709 | } | |
3710 | #endif | |
3711 | #else | |
3712 | #ifdef TC_CONS_FIX_NEW | |
3713 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3714 | #else | |
3715 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
3716 | it is defined, otherwise use NO_RELOC if it is defined, | |
3717 | otherwise use 0. */ | |
3718 | #ifndef TC_CONS_RELOC | |
3719 | #ifdef NO_RELOC | |
3720 | #define TC_CONS_RELOC NO_RELOC | |
3721 | #else | |
3722 | #define TC_CONS_RELOC 0 | |
3723 | #endif | |
3724 | #endif | |
3725 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, | |
3726 | TC_CONS_RELOC); | |
3727 | #endif /* TC_CONS_FIX_NEW */ | |
3728 | #endif /* BFD_ASSEMBLER */ | |
3729 | } | |
3730 | } | |
3731 | \f | |
3732 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3733 | ||
3734 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
3735 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3736 | then pack them all together. We do a little better in that we allow | |
3737 | them in words, longs, etc. and we'll pack them in target byte order | |
3738 | for you. | |
3739 | ||
3740 | The rules are: pack least significat bit first, if a field doesn't | |
3741 | entirely fit, put it in the next unit. Overflowing the bitfield is | |
3742 | explicitly *not* even a warning. The bitwidth should be considered | |
3743 | a "mask". | |
3744 | ||
3745 | To use this function the tc-XXX.h file should define | |
3746 | BITFIELD_CONS_EXPRESSIONS. */ | |
3747 | ||
041ff4dd | 3748 | static void |
252b5132 RH |
3749 | parse_bitfield_cons (exp, nbytes) |
3750 | expressionS *exp; | |
3751 | unsigned int nbytes; | |
3752 | { | |
3753 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3754 | char *hold = input_line_pointer; | |
3755 | ||
3756 | (void) expression (exp); | |
3757 | ||
3758 | if (*input_line_pointer == ':') | |
041ff4dd NC |
3759 | { |
3760 | /* Bitfields. */ | |
252b5132 RH |
3761 | long value = 0; |
3762 | ||
3763 | for (;;) | |
3764 | { | |
3765 | unsigned long width; | |
3766 | ||
3767 | if (*input_line_pointer != ':') | |
3768 | { | |
3769 | input_line_pointer = hold; | |
3770 | break; | |
041ff4dd | 3771 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
3772 | |
3773 | /* In the general case, we can't allow | |
3774 | full expressions with symbol | |
3775 | differences and such. The relocation | |
3776 | entries for symbols not defined in this | |
3777 | assembly would require arbitrary field | |
3778 | widths, positions, and masks which most | |
3779 | of our current object formats don't | |
3780 | support. | |
3781 | ||
3782 | In the specific case where a symbol | |
3783 | *is* defined in this assembly, we | |
3784 | *could* build fixups and track it, but | |
3785 | this could lead to confusion for the | |
3786 | backends. I'm lazy. I'll take any | |
3787 | SEG_ABSOLUTE. I think that means that | |
3788 | you can use a previous .set or | |
041ff4dd | 3789 | .equ type symbol. xoxorich. */ |
252b5132 RH |
3790 | |
3791 | if (exp->X_op == O_absent) | |
3792 | { | |
3793 | as_warn (_("using a bit field width of zero")); | |
3794 | exp->X_add_number = 0; | |
3795 | exp->X_op = O_constant; | |
041ff4dd | 3796 | } /* Implied zero width bitfield. */ |
252b5132 RH |
3797 | |
3798 | if (exp->X_op != O_constant) | |
3799 | { | |
3800 | *input_line_pointer = '\0'; | |
3801 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
3802 | *input_line_pointer = ':'; | |
3803 | demand_empty_rest_of_line (); | |
3804 | return; | |
041ff4dd | 3805 | } /* Too complex. */ |
252b5132 RH |
3806 | |
3807 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
3808 | { | |
3809 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
3810 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
3811 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 3812 | } /* Too big. */ |
252b5132 RH |
3813 | |
3814 | if (width > bits_available) | |
3815 | { | |
3816 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
3817 | input_line_pointer = hold; | |
3818 | exp->X_add_number = value; | |
3819 | break; | |
041ff4dd | 3820 | } /* Won't fit. */ |
252b5132 RH |
3821 | |
3822 | hold = ++input_line_pointer; /* skip ':' */ | |
3823 | ||
3824 | (void) expression (exp); | |
3825 | if (exp->X_op != O_constant) | |
3826 | { | |
3827 | char cache = *input_line_pointer; | |
3828 | ||
3829 | *input_line_pointer = '\0'; | |
3830 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
3831 | *input_line_pointer = cache; | |
3832 | demand_empty_rest_of_line (); | |
3833 | return; | |
041ff4dd | 3834 | } /* Too complex. */ |
252b5132 RH |
3835 | |
3836 | value |= ((~(-1 << width) & exp->X_add_number) | |
3837 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
3838 | ||
3839 | if ((bits_available -= width) == 0 | |
3840 | || is_it_end_of_statement () | |
3841 | || *input_line_pointer != ',') | |
3842 | { | |
3843 | break; | |
041ff4dd | 3844 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
3845 | |
3846 | hold = ++input_line_pointer; | |
3847 | (void) expression (exp); | |
041ff4dd | 3848 | } |
252b5132 RH |
3849 | |
3850 | exp->X_add_number = value; | |
3851 | exp->X_op = O_constant; | |
3852 | exp->X_unsigned = 1; | |
041ff4dd NC |
3853 | } |
3854 | } | |
252b5132 RH |
3855 | |
3856 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
3857 | \f | |
3858 | /* Handle an MRI style string expression. */ | |
3859 | ||
abd63a32 | 3860 | #ifdef TC_M68K |
252b5132 RH |
3861 | static void |
3862 | parse_mri_cons (exp, nbytes) | |
3863 | expressionS *exp; | |
3864 | unsigned int nbytes; | |
3865 | { | |
3866 | if (*input_line_pointer != '\'' | |
3867 | && (input_line_pointer[1] != '\'' | |
3868 | || (*input_line_pointer != 'A' | |
3869 | && *input_line_pointer != 'E'))) | |
3870 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3871 | else | |
3872 | { | |
3873 | unsigned int scan; | |
3874 | unsigned int result = 0; | |
3875 | ||
3876 | /* An MRI style string. Cut into as many bytes as will fit into | |
3877 | a nbyte chunk, left justify if necessary, and separate with | |
3878 | commas so we can try again later. */ | |
3879 | if (*input_line_pointer == 'A') | |
3880 | ++input_line_pointer; | |
3881 | else if (*input_line_pointer == 'E') | |
3882 | { | |
3883 | as_bad (_("EBCDIC constants are not supported")); | |
3884 | ++input_line_pointer; | |
3885 | } | |
3886 | ||
3887 | input_line_pointer++; | |
3888 | for (scan = 0; scan < nbytes; scan++) | |
3889 | { | |
3890 | if (*input_line_pointer == '\'') | |
3891 | { | |
3892 | if (input_line_pointer[1] == '\'') | |
3893 | { | |
3894 | input_line_pointer++; | |
3895 | } | |
3896 | else | |
3897 | break; | |
3898 | } | |
3899 | result = (result << 8) | (*input_line_pointer++); | |
3900 | } | |
3901 | ||
041ff4dd | 3902 | /* Left justify. */ |
252b5132 RH |
3903 | while (scan < nbytes) |
3904 | { | |
3905 | result <<= 8; | |
3906 | scan++; | |
3907 | } | |
f0e652b4 | 3908 | |
041ff4dd | 3909 | /* Create correct expression. */ |
252b5132 RH |
3910 | exp->X_op = O_constant; |
3911 | exp->X_add_number = result; | |
f0e652b4 | 3912 | |
041ff4dd | 3913 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
3914 | if (input_line_pointer[0] != '\'' || |
3915 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
3916 | { | |
3917 | input_line_pointer -= 2; | |
3918 | input_line_pointer[0] = ','; | |
3919 | input_line_pointer[1] = '\''; | |
3920 | } | |
3921 | else | |
3922 | input_line_pointer++; | |
3923 | } | |
3924 | } | |
abd63a32 | 3925 | #endif /* TC_M68K */ |
252b5132 RH |
3926 | \f |
3927 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3928 | ||
3929 | /* Parse a repeat expression for cons. This is used by the MIPS | |
3930 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
3931 | object file COUNT times. | |
3932 | ||
3933 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
3934 | ||
3935 | static void | |
3936 | parse_repeat_cons (exp, nbytes) | |
3937 | expressionS *exp; | |
3938 | unsigned int nbytes; | |
3939 | { | |
3940 | expressionS count; | |
3941 | register int i; | |
3942 | ||
3943 | expression (exp); | |
3944 | ||
3945 | if (*input_line_pointer != ':') | |
3946 | { | |
3947 | /* No repeat count. */ | |
3948 | return; | |
3949 | } | |
3950 | ||
3951 | ++input_line_pointer; | |
3952 | expression (&count); | |
3953 | if (count.X_op != O_constant | |
3954 | || count.X_add_number <= 0) | |
3955 | { | |
3956 | as_warn (_("Unresolvable or nonpositive repeat count; using 1")); | |
3957 | return; | |
3958 | } | |
3959 | ||
3960 | /* The cons function is going to output this expression once. So we | |
3961 | output it count - 1 times. */ | |
3962 | for (i = count.X_add_number - 1; i > 0; i--) | |
3963 | emit_expr (exp, nbytes); | |
3964 | } | |
3965 | ||
3966 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
3967 | \f | |
3968 | /* Parse a floating point number represented as a hex constant. This | |
3969 | permits users to specify the exact bits they want in the floating | |
3970 | point number. */ | |
3971 | ||
3972 | static int | |
3973 | hex_float (float_type, bytes) | |
3974 | int float_type; | |
3975 | char *bytes; | |
3976 | { | |
3977 | int length; | |
3978 | int i; | |
3979 | ||
3980 | switch (float_type) | |
3981 | { | |
3982 | case 'f': | |
3983 | case 'F': | |
3984 | case 's': | |
3985 | case 'S': | |
3986 | length = 4; | |
3987 | break; | |
3988 | ||
3989 | case 'd': | |
3990 | case 'D': | |
3991 | case 'r': | |
3992 | case 'R': | |
3993 | length = 8; | |
3994 | break; | |
3995 | ||
3996 | case 'x': | |
3997 | case 'X': | |
3998 | length = 12; | |
3999 | break; | |
4000 | ||
4001 | case 'p': | |
4002 | case 'P': | |
4003 | length = 12; | |
4004 | break; | |
4005 | ||
4006 | default: | |
4007 | as_bad (_("Unknown floating type type '%c'"), float_type); | |
4008 | return -1; | |
4009 | } | |
4010 | ||
4011 | /* It would be nice if we could go through expression to parse the | |
4012 | hex constant, but if we get a bignum it's a pain to sort it into | |
4013 | the buffer correctly. */ | |
4014 | i = 0; | |
4015 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4016 | { | |
4017 | int d; | |
4018 | ||
4019 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4020 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4021 | if (*input_line_pointer == '_') |
4022 | { | |
4023 | ++input_line_pointer; | |
4024 | continue; | |
4025 | } | |
4026 | ||
4027 | if (i >= length) | |
4028 | { | |
4029 | as_warn (_("Floating point constant too large")); | |
4030 | return -1; | |
4031 | } | |
4032 | d = hex_value (*input_line_pointer) << 4; | |
4033 | ++input_line_pointer; | |
4034 | while (*input_line_pointer == '_') | |
4035 | ++input_line_pointer; | |
4036 | if (hex_p (*input_line_pointer)) | |
4037 | { | |
4038 | d += hex_value (*input_line_pointer); | |
4039 | ++input_line_pointer; | |
4040 | } | |
4041 | if (target_big_endian) | |
4042 | bytes[i] = d; | |
4043 | else | |
4044 | bytes[length - i - 1] = d; | |
4045 | ++i; | |
4046 | } | |
4047 | ||
4048 | if (i < length) | |
4049 | { | |
4050 | if (target_big_endian) | |
4051 | memset (bytes + i, 0, length - i); | |
4052 | else | |
4053 | memset (bytes, 0, length - i); | |
4054 | } | |
4055 | ||
4056 | return length; | |
4057 | } | |
4058 | ||
041ff4dd | 4059 | /* float_cons() |
f0e652b4 | 4060 | |
041ff4dd NC |
4061 | CONStruct some more frag chars of .floats .ffloats etc. |
4062 | Makes 0 or more new frags. | |
4063 | If need_pass_2 == 1, no frags are emitted. | |
4064 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4065 | |
041ff4dd NC |
4066 | A floating constant is defined by atof_generic(), except it is preceded |
4067 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4068 | reading, I decided to be incompatible. This always tries to give you | |
4069 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
4070 | truncatation, restored noisy bits instead of trailing 0s AND gave you | |
4071 | a choice of 2 flavours of noise according to which of 2 floating-point | |
4072 | scanners you directed AS to use. | |
f0e652b4 | 4073 | |
041ff4dd | 4074 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4075 | |
4076 | void | |
4077 | float_cons (float_type) | |
041ff4dd NC |
4078 | /* Clobbers input_line-pointer, checks end-of-line. */ |
4079 | register int float_type; /* 'f':.ffloat ... 'F':.float ... */ | |
252b5132 RH |
4080 | { |
4081 | register char *p; | |
041ff4dd NC |
4082 | int length; /* Number of chars in an object. */ |
4083 | register char *err; /* Error from scanning floating literal. */ | |
252b5132 RH |
4084 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4085 | ||
4086 | if (is_it_end_of_statement ()) | |
4087 | { | |
4088 | demand_empty_rest_of_line (); | |
4089 | return; | |
4090 | } | |
4091 | ||
4092 | #ifdef md_flush_pending_output | |
4093 | md_flush_pending_output (); | |
4094 | #endif | |
4095 | ||
4096 | do | |
4097 | { | |
041ff4dd | 4098 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4099 | SKIP_WHITESPACE (); |
4100 | ||
4101 | /* Skip any 0{letter} that may be present. Don't even check if the | |
041ff4dd NC |
4102 | letter is legal. Someone may invent a "z" format and this routine |
4103 | has no use for such information. Lusers beware: you get | |
4104 | diagnostics if your input is ill-conditioned. */ | |
252b5132 RH |
4105 | if (input_line_pointer[0] == '0' |
4106 | && isalpha ((unsigned char) input_line_pointer[1])) | |
4107 | input_line_pointer += 2; | |
4108 | ||
4109 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
4110 | point with the exact digits specified. */ | |
4111 | if (input_line_pointer[0] == ':') | |
4112 | { | |
4113 | ++input_line_pointer; | |
4114 | length = hex_float (float_type, temp); | |
4115 | if (length < 0) | |
4116 | { | |
4117 | ignore_rest_of_line (); | |
4118 | return; | |
4119 | } | |
4120 | } | |
4121 | else | |
4122 | { | |
4123 | err = md_atof (float_type, temp, &length); | |
4124 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
4125 | know (length > 0); | |
4126 | if (err) | |
4127 | { | |
4128 | as_bad (_("Bad floating literal: %s"), err); | |
4129 | ignore_rest_of_line (); | |
4130 | return; | |
4131 | } | |
4132 | } | |
4133 | ||
4134 | if (!need_pass_2) | |
4135 | { | |
4136 | int count; | |
4137 | ||
4138 | count = 1; | |
4139 | ||
4140 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4141 | if (*input_line_pointer == ':') | |
4142 | { | |
4143 | expressionS count_exp; | |
4144 | ||
4145 | ++input_line_pointer; | |
4146 | expression (&count_exp); | |
f0e652b4 | 4147 | |
252b5132 RH |
4148 | if (count_exp.X_op != O_constant |
4149 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4150 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4151 | else |
4152 | count = count_exp.X_add_number; | |
4153 | } | |
4154 | #endif | |
4155 | ||
4156 | while (--count >= 0) | |
4157 | { | |
4158 | p = frag_more (length); | |
4159 | memcpy (p, temp, (unsigned int) length); | |
4160 | } | |
4161 | } | |
4162 | SKIP_WHITESPACE (); | |
4163 | } | |
4164 | while (*input_line_pointer++ == ','); | |
4165 | ||
041ff4dd NC |
4166 | /* Put terminator back into stream. */ |
4167 | --input_line_pointer; | |
252b5132 | 4168 | demand_empty_rest_of_line (); |
041ff4dd | 4169 | } |
252b5132 | 4170 | \f |
041ff4dd | 4171 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4172 | |
4173 | static inline int | |
4174 | sizeof_sleb128 (value) | |
4175 | offsetT value; | |
4176 | { | |
4177 | register int size = 0; | |
4178 | register unsigned byte; | |
4179 | ||
4180 | do | |
4181 | { | |
4182 | byte = (value & 0x7f); | |
4183 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4184 | Fortunately, we can structure things so that the extra work reduces | |
4185 | to a noop on systems that do things "properly". */ | |
4186 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4187 | size += 1; | |
4188 | } | |
4189 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4190 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4191 | ||
4192 | return size; | |
4193 | } | |
4194 | ||
4195 | static inline int | |
4196 | sizeof_uleb128 (value) | |
4197 | valueT value; | |
4198 | { | |
4199 | register int size = 0; | |
4200 | register unsigned byte; | |
4201 | ||
4202 | do | |
4203 | { | |
4204 | byte = (value & 0x7f); | |
4205 | value >>= 7; | |
4206 | size += 1; | |
4207 | } | |
4208 | while (value != 0); | |
4209 | ||
4210 | return size; | |
4211 | } | |
4212 | ||
4213 | int | |
4214 | sizeof_leb128 (value, sign) | |
4215 | valueT value; | |
4216 | int sign; | |
4217 | { | |
4218 | if (sign) | |
4219 | return sizeof_sleb128 ((offsetT) value); | |
4220 | else | |
4221 | return sizeof_uleb128 (value); | |
4222 | } | |
4223 | ||
4224 | /* Output a LEB128 value. */ | |
4225 | ||
4226 | static inline int | |
4227 | output_sleb128 (p, value) | |
4228 | char *p; | |
4229 | offsetT value; | |
4230 | { | |
4231 | register char *orig = p; | |
4232 | register int more; | |
4233 | ||
4234 | do | |
4235 | { | |
4236 | unsigned byte = (value & 0x7f); | |
4237 | ||
4238 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4239 | Fortunately, we can structure things so that the extra work reduces | |
4240 | to a noop on systems that do things "properly". */ | |
4241 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4242 | ||
4243 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4244 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4245 | if (more) | |
4246 | byte |= 0x80; | |
4247 | ||
4248 | *p++ = byte; | |
4249 | } | |
4250 | while (more); | |
4251 | ||
4252 | return p - orig; | |
4253 | } | |
4254 | ||
4255 | static inline int | |
4256 | output_uleb128 (p, value) | |
4257 | char *p; | |
4258 | valueT value; | |
4259 | { | |
4260 | char *orig = p; | |
4261 | ||
4262 | do | |
4263 | { | |
4264 | unsigned byte = (value & 0x7f); | |
4265 | value >>= 7; | |
4266 | if (value != 0) | |
4267 | /* More bytes to follow. */ | |
4268 | byte |= 0x80; | |
4269 | ||
4270 | *p++ = byte; | |
4271 | } | |
4272 | while (value != 0); | |
4273 | ||
4274 | return p - orig; | |
4275 | } | |
4276 | ||
4277 | int | |
4278 | output_leb128 (p, value, sign) | |
4279 | char *p; | |
4280 | valueT value; | |
4281 | int sign; | |
4282 | { | |
4283 | if (sign) | |
4284 | return output_sleb128 (p, (offsetT) value); | |
4285 | else | |
4286 | return output_uleb128 (p, value); | |
4287 | } | |
4288 | ||
4289 | /* Do the same for bignums. We combine sizeof with output here in that | |
4290 | we don't output for NULL values of P. It isn't really as critical as | |
4291 | for "normal" values that this be streamlined. */ | |
4292 | ||
6d4d30bb | 4293 | static inline int |
252b5132 RH |
4294 | output_big_sleb128 (p, bignum, size) |
4295 | char *p; | |
4296 | LITTLENUM_TYPE *bignum; | |
4297 | int size; | |
4298 | { | |
4299 | char *orig = p; | |
4300 | valueT val = 0; | |
4301 | int loaded = 0; | |
4302 | unsigned byte; | |
4303 | ||
4304 | /* Strip leading sign extensions off the bignum. */ | |
041ff4dd | 4305 | while (size > 0 && bignum[size - 1] == (LITTLENUM_TYPE) -1) |
252b5132 RH |
4306 | size--; |
4307 | ||
4308 | do | |
4309 | { | |
4310 | if (loaded < 7 && size > 0) | |
4311 | { | |
4312 | val |= (*bignum << loaded); | |
4313 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4314 | size--; | |
4315 | bignum++; | |
4316 | } | |
4317 | ||
4318 | byte = val & 0x7f; | |
4319 | loaded -= 7; | |
4320 | val >>= 7; | |
4321 | ||
4322 | if (size == 0) | |
4323 | { | |
4324 | if ((val == 0 && (byte & 0x40) == 0) | |
041ff4dd | 4325 | || (~(val | ~(((valueT) 1 << loaded) - 1)) == 0 |
252b5132 RH |
4326 | && (byte & 0x40) != 0)) |
4327 | byte |= 0x80; | |
4328 | } | |
4329 | ||
4330 | if (orig) | |
4331 | *p = byte; | |
4332 | p++; | |
4333 | } | |
4334 | while (byte & 0x80); | |
4335 | ||
4336 | return p - orig; | |
4337 | } | |
4338 | ||
6d4d30bb | 4339 | static inline int |
252b5132 RH |
4340 | output_big_uleb128 (p, bignum, size) |
4341 | char *p; | |
4342 | LITTLENUM_TYPE *bignum; | |
4343 | int size; | |
4344 | { | |
4345 | char *orig = p; | |
4346 | valueT val = 0; | |
4347 | int loaded = 0; | |
4348 | unsigned byte; | |
4349 | ||
4350 | /* Strip leading zeros off the bignum. */ | |
4351 | /* XXX: Is this needed? */ | |
041ff4dd | 4352 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4353 | size--; |
4354 | ||
4355 | do | |
4356 | { | |
4357 | if (loaded < 7 && size > 0) | |
4358 | { | |
4359 | val |= (*bignum << loaded); | |
4360 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4361 | size--; | |
4362 | bignum++; | |
4363 | } | |
4364 | ||
4365 | byte = val & 0x7f; | |
4366 | loaded -= 7; | |
4367 | val >>= 7; | |
4368 | ||
4369 | if (size > 0 || val) | |
4370 | byte |= 0x80; | |
4371 | ||
4372 | if (orig) | |
4373 | *p = byte; | |
4374 | p++; | |
4375 | } | |
4376 | while (byte & 0x80); | |
4377 | ||
4378 | return p - orig; | |
4379 | } | |
4380 | ||
6d4d30bb | 4381 | static int |
252b5132 RH |
4382 | output_big_leb128 (p, bignum, size, sign) |
4383 | char *p; | |
4384 | LITTLENUM_TYPE *bignum; | |
4385 | int size, sign; | |
4386 | { | |
4387 | if (sign) | |
4388 | return output_big_sleb128 (p, bignum, size); | |
4389 | else | |
4390 | return output_big_uleb128 (p, bignum, size); | |
4391 | } | |
4392 | ||
4393 | /* Generate the appropriate fragments for a given expression to emit a | |
4394 | leb128 value. */ | |
4395 | ||
4396 | void | |
041ff4dd | 4397 | emit_leb128_expr (exp, sign) |
252b5132 RH |
4398 | expressionS *exp; |
4399 | int sign; | |
4400 | { | |
4401 | operatorT op = exp->X_op; | |
4402 | ||
4403 | if (op == O_absent || op == O_illegal) | |
4404 | { | |
4405 | as_warn (_("zero assumed for missing expression")); | |
4406 | exp->X_add_number = 0; | |
4407 | op = O_constant; | |
4408 | } | |
4409 | else if (op == O_big && exp->X_add_number <= 0) | |
4410 | { | |
4411 | as_bad (_("floating point number invalid; zero assumed")); | |
4412 | exp->X_add_number = 0; | |
4413 | op = O_constant; | |
4414 | } | |
4415 | else if (op == O_register) | |
4416 | { | |
4417 | as_warn (_("register value used as expression")); | |
4418 | op = O_constant; | |
4419 | } | |
4420 | ||
4421 | if (op == O_constant) | |
4422 | { | |
4423 | /* If we've got a constant, emit the thing directly right now. */ | |
4424 | ||
4425 | valueT value = exp->X_add_number; | |
4426 | int size; | |
4427 | char *p; | |
4428 | ||
4429 | size = sizeof_leb128 (value, sign); | |
4430 | p = frag_more (size); | |
4431 | output_leb128 (p, value, sign); | |
4432 | } | |
4433 | else if (op == O_big) | |
4434 | { | |
4435 | /* O_big is a different sort of constant. */ | |
4436 | ||
4437 | int size; | |
4438 | char *p; | |
4439 | ||
4440 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
4441 | p = frag_more (size); | |
4442 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
4443 | } | |
4444 | else | |
4445 | { | |
041ff4dd | 4446 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
4447 | resolve things later. */ |
4448 | ||
041ff4dd | 4449 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
4450 | make_expr_symbol (exp), 0, (char *) NULL); |
4451 | } | |
4452 | } | |
4453 | ||
4454 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
4455 | ||
4456 | void | |
4457 | s_leb128 (sign) | |
4458 | int sign; | |
4459 | { | |
4460 | expressionS exp; | |
4461 | ||
041ff4dd NC |
4462 | do |
4463 | { | |
4464 | expression (&exp); | |
4465 | emit_leb128_expr (&exp, sign); | |
4466 | } | |
4467 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
4468 | |
4469 | input_line_pointer--; | |
4470 | demand_empty_rest_of_line (); | |
4471 | } | |
4472 | \f | |
041ff4dd NC |
4473 | /* We read 0 or more ',' separated, double-quoted strings. |
4474 | Caller should have checked need_pass_2 is FALSE because we don't | |
4475 | check it. */ | |
4476 | ||
4477 | void | |
4478 | stringer (append_zero) /* Worker to do .ascii etc statements. */ | |
4479 | /* Checks end-of-line. */ | |
4480 | register int append_zero; /* 0: don't append '\0', else 1. */ | |
252b5132 RH |
4481 | { |
4482 | register unsigned int c; | |
4483 | char *start; | |
4484 | ||
4485 | #ifdef md_flush_pending_output | |
4486 | md_flush_pending_output (); | |
4487 | #endif | |
4488 | ||
041ff4dd NC |
4489 | /* The following awkward logic is to parse ZERO or more strings, |
4490 | comma separated. Recall a string expression includes spaces | |
4491 | before the opening '\"' and spaces after the closing '\"'. | |
4492 | We fake a leading ',' if there is (supposed to be) | |
4493 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
4494 | if (is_it_end_of_statement ()) |
4495 | { | |
041ff4dd NC |
4496 | c = 0; /* Skip loop. */ |
4497 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
4498 | } |
4499 | else | |
4500 | { | |
041ff4dd | 4501 | c = ','; /* Do loop. */ |
252b5132 RH |
4502 | } |
4503 | while (c == ',' || c == '<' || c == '"') | |
4504 | { | |
4505 | SKIP_WHITESPACE (); | |
4506 | switch (*input_line_pointer) | |
4507 | { | |
4508 | case '\"': | |
041ff4dd | 4509 | ++input_line_pointer; /*->1st char of string. */ |
252b5132 RH |
4510 | start = input_line_pointer; |
4511 | while (is_a_char (c = next_char_of_string ())) | |
4512 | { | |
4513 | FRAG_APPEND_1_CHAR (c); | |
4514 | } | |
4515 | if (append_zero) | |
4516 | { | |
4517 | FRAG_APPEND_1_CHAR (0); | |
4518 | } | |
4519 | know (input_line_pointer[-1] == '\"'); | |
4520 | ||
4521 | #ifndef NO_LISTING | |
4522 | #ifdef OBJ_ELF | |
4523 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | |
4524 | will emit .string with a filename in the .debug section | |
4525 | after a sequence of constants. See the comment in | |
4526 | emit_expr for the sequence. emit_expr will set | |
4527 | dwarf_file_string to non-zero if this string might be a | |
4528 | source file name. */ | |
4529 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4530 | dwarf_file_string = 0; | |
4531 | else if (dwarf_file_string) | |
4532 | { | |
4533 | c = input_line_pointer[-1]; | |
4534 | input_line_pointer[-1] = '\0'; | |
4535 | listing_source_file (start); | |
4536 | input_line_pointer[-1] = c; | |
4537 | } | |
4538 | #endif | |
4539 | #endif | |
4540 | ||
4541 | break; | |
4542 | case '<': | |
4543 | input_line_pointer++; | |
4544 | c = get_single_number (); | |
4545 | FRAG_APPEND_1_CHAR (c); | |
4546 | if (*input_line_pointer != '>') | |
4547 | { | |
4548 | as_bad (_("Expected <nn>")); | |
4549 | } | |
4550 | input_line_pointer++; | |
4551 | break; | |
4552 | case ',': | |
4553 | input_line_pointer++; | |
4554 | break; | |
4555 | } | |
4556 | SKIP_WHITESPACE (); | |
4557 | c = *input_line_pointer; | |
4558 | } | |
4559 | ||
4560 | demand_empty_rest_of_line (); | |
4561 | } /* stringer() */ | |
4562 | \f | |
4563 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
4564 | high bits set. We'll probably also have trouble with | |
4565 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 4566 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 4567 | |
041ff4dd | 4568 | unsigned int |
252b5132 RH |
4569 | next_char_of_string () |
4570 | { | |
4571 | register unsigned int c; | |
4572 | ||
4573 | c = *input_line_pointer++ & CHAR_MASK; | |
4574 | switch (c) | |
4575 | { | |
4576 | case '\"': | |
4577 | c = NOT_A_CHAR; | |
4578 | break; | |
4579 | ||
4580 | case '\n': | |
4581 | as_warn (_("Unterminated string: Newline inserted.")); | |
4582 | bump_line_counters (); | |
4583 | break; | |
4584 | ||
4585 | #ifndef NO_STRING_ESCAPES | |
4586 | case '\\': | |
4587 | switch (c = *input_line_pointer++) | |
4588 | { | |
4589 | case 'b': | |
4590 | c = '\b'; | |
4591 | break; | |
4592 | ||
4593 | case 'f': | |
4594 | c = '\f'; | |
4595 | break; | |
4596 | ||
4597 | case 'n': | |
4598 | c = '\n'; | |
4599 | break; | |
4600 | ||
4601 | case 'r': | |
4602 | c = '\r'; | |
4603 | break; | |
4604 | ||
4605 | case 't': | |
4606 | c = '\t'; | |
4607 | break; | |
4608 | ||
4609 | case 'v': | |
4610 | c = '\013'; | |
4611 | break; | |
4612 | ||
4613 | case '\\': | |
4614 | case '"': | |
041ff4dd | 4615 | break; /* As itself. */ |
252b5132 RH |
4616 | |
4617 | case '0': | |
4618 | case '1': | |
4619 | case '2': | |
4620 | case '3': | |
4621 | case '4': | |
4622 | case '5': | |
4623 | case '6': | |
4624 | case '7': | |
4625 | case '8': | |
4626 | case '9': | |
4627 | { | |
4628 | long number; | |
4629 | int i; | |
4630 | ||
041ff4dd NC |
4631 | for (i = 0, number = 0; |
4632 | isdigit (c) && i < 3; | |
4633 | c = *input_line_pointer++, i++) | |
252b5132 RH |
4634 | { |
4635 | number = number * 8 + c - '0'; | |
4636 | } | |
f0e652b4 | 4637 | |
252b5132 RH |
4638 | c = number & 0xff; |
4639 | } | |
4640 | --input_line_pointer; | |
4641 | break; | |
4642 | ||
4643 | case 'x': | |
4644 | case 'X': | |
4645 | { | |
4646 | long number; | |
4647 | ||
4648 | number = 0; | |
4649 | c = *input_line_pointer++; | |
4650 | while (isxdigit (c)) | |
4651 | { | |
4652 | if (isdigit (c)) | |
4653 | number = number * 16 + c - '0'; | |
4654 | else if (isupper (c)) | |
4655 | number = number * 16 + c - 'A' + 10; | |
4656 | else | |
4657 | number = number * 16 + c - 'a' + 10; | |
4658 | c = *input_line_pointer++; | |
4659 | } | |
4660 | c = number & 0xff; | |
4661 | --input_line_pointer; | |
4662 | } | |
4663 | break; | |
4664 | ||
4665 | case '\n': | |
041ff4dd | 4666 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
252b5132 RH |
4667 | as_warn (_("Unterminated string: Newline inserted.")); |
4668 | c = '\n'; | |
4669 | bump_line_counters (); | |
4670 | break; | |
4671 | ||
4672 | default: | |
4673 | ||
4674 | #ifdef ONLY_STANDARD_ESCAPES | |
4675 | as_bad (_("Bad escaped character in string, '?' assumed")); | |
4676 | c = '?'; | |
4677 | #endif /* ONLY_STANDARD_ESCAPES */ | |
4678 | ||
4679 | break; | |
041ff4dd | 4680 | } |
252b5132 RH |
4681 | break; |
4682 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
4683 | ||
4684 | default: | |
4685 | break; | |
041ff4dd | 4686 | } |
252b5132 | 4687 | return (c); |
041ff4dd | 4688 | } |
252b5132 RH |
4689 | \f |
4690 | static segT | |
4691 | get_segmented_expression (expP) | |
4692 | register expressionS *expP; | |
4693 | { | |
4694 | register segT retval; | |
4695 | ||
4696 | retval = expression (expP); | |
4697 | if (expP->X_op == O_illegal | |
4698 | || expP->X_op == O_absent | |
4699 | || expP->X_op == O_big) | |
4700 | { | |
4701 | as_bad (_("expected address expression; zero assumed")); | |
4702 | expP->X_op = O_constant; | |
4703 | expP->X_add_number = 0; | |
4704 | retval = absolute_section; | |
4705 | } | |
4706 | return retval; | |
4707 | } | |
4708 | ||
041ff4dd | 4709 | static segT |
252b5132 RH |
4710 | get_known_segmented_expression (expP) |
4711 | register expressionS *expP; | |
4712 | { | |
4713 | register segT retval; | |
4714 | ||
4715 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
4716 | { | |
4717 | /* There is no easy way to extract the undefined symbol from the | |
4718 | expression. */ | |
4719 | if (expP->X_add_symbol != NULL | |
4720 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
4721 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
4722 | S_GET_NAME (expP->X_add_symbol)); | |
4723 | else | |
4724 | as_warn (_("some symbol undefined; zero assumed")); | |
4725 | retval = absolute_section; | |
4726 | expP->X_op = O_constant; | |
4727 | expP->X_add_number = 0; | |
4728 | } | |
4729 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
4730 | return (retval); | |
041ff4dd | 4731 | } |
252b5132 RH |
4732 | |
4733 | offsetT | |
4734 | get_absolute_expression () | |
4735 | { | |
4736 | expressionS exp; | |
4737 | ||
4738 | expression (&exp); | |
4739 | if (exp.X_op != O_constant) | |
4740 | { | |
4741 | if (exp.X_op != O_absent) | |
4742 | as_bad (_("bad or irreducible absolute expression; zero assumed")); | |
4743 | exp.X_add_number = 0; | |
4744 | } | |
4745 | return exp.X_add_number; | |
4746 | } | |
4747 | ||
041ff4dd | 4748 | char /* Return terminator. */ |
252b5132 | 4749 | get_absolute_expression_and_terminator (val_pointer) |
041ff4dd | 4750 | long *val_pointer; /* Return value of expression. */ |
252b5132 RH |
4751 | { |
4752 | /* FIXME: val_pointer should probably be offsetT *. */ | |
4753 | *val_pointer = (long) get_absolute_expression (); | |
4754 | return (*input_line_pointer++); | |
4755 | } | |
4756 | \f | |
041ff4dd NC |
4757 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
4758 | Give a warning if that happens. */ | |
4759 | ||
252b5132 RH |
4760 | char * |
4761 | demand_copy_C_string (len_pointer) | |
4762 | int *len_pointer; | |
4763 | { | |
4764 | register char *s; | |
4765 | ||
4766 | if ((s = demand_copy_string (len_pointer)) != 0) | |
4767 | { | |
4768 | register int len; | |
4769 | ||
4770 | for (len = *len_pointer; len > 0; len--) | |
4771 | { | |
4772 | if (*s == 0) | |
4773 | { | |
4774 | s = 0; | |
4775 | len = 1; | |
4776 | *len_pointer = 0; | |
4777 | as_bad (_("This string may not contain \'\\0\'")); | |
4778 | } | |
4779 | } | |
4780 | } | |
f0e652b4 | 4781 | |
252b5132 RH |
4782 | return s; |
4783 | } | |
4784 | \f | |
041ff4dd NC |
4785 | /* Demand string, but return a safe (=private) copy of the string. |
4786 | Return NULL if we can't read a string here. */ | |
4787 | ||
252b5132 RH |
4788 | char * |
4789 | demand_copy_string (lenP) | |
4790 | int *lenP; | |
4791 | { | |
4792 | register unsigned int c; | |
4793 | register int len; | |
4794 | char *retval; | |
4795 | ||
4796 | len = 0; | |
4797 | SKIP_WHITESPACE (); | |
4798 | if (*input_line_pointer == '\"') | |
4799 | { | |
041ff4dd | 4800 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
4801 | |
4802 | while (is_a_char (c = next_char_of_string ())) | |
4803 | { | |
4804 | obstack_1grow (¬es, c); | |
4805 | len++; | |
4806 | } | |
4807 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 4808 | null terminated string. */ |
252b5132 RH |
4809 | obstack_1grow (¬es, '\0'); |
4810 | retval = obstack_finish (¬es); | |
4811 | } | |
4812 | else | |
4813 | { | |
4814 | as_warn (_("Missing string")); | |
4815 | retval = NULL; | |
4816 | ignore_rest_of_line (); | |
4817 | } | |
4818 | *lenP = len; | |
4819 | return (retval); | |
041ff4dd | 4820 | } |
252b5132 | 4821 | \f |
041ff4dd | 4822 | /* In: Input_line_pointer->next character. |
f0e652b4 | 4823 | |
041ff4dd | 4824 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 4825 | |
041ff4dd NC |
4826 | Out: 1 if input_line_pointer->end-of-line. */ |
4827 | ||
4828 | int | |
252b5132 RH |
4829 | is_it_end_of_statement () |
4830 | { | |
4831 | SKIP_WHITESPACE (); | |
4832 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 4833 | } |
252b5132 | 4834 | |
041ff4dd | 4835 | void |
252b5132 RH |
4836 | equals (sym_name, reassign) |
4837 | char *sym_name; | |
4838 | int reassign; | |
4839 | { | |
041ff4dd | 4840 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 RH |
4841 | char *stop = NULL; |
4842 | char stopc; | |
4843 | ||
4844 | input_line_pointer++; | |
4845 | if (*input_line_pointer == '=') | |
4846 | input_line_pointer++; | |
4847 | ||
4848 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
4849 | input_line_pointer++; | |
4850 | ||
4851 | if (flag_mri) | |
4852 | stop = mri_comment_field (&stopc); | |
4853 | ||
4854 | if (sym_name[0] == '.' && sym_name[1] == '\0') | |
4855 | { | |
041ff4dd | 4856 | /* Turn '. = mumble' into a .org mumble. */ |
252b5132 RH |
4857 | register segT segment; |
4858 | expressionS exp; | |
4859 | ||
4860 | segment = get_known_segmented_expression (&exp); | |
4861 | if (!need_pass_2) | |
4862 | do_org (segment, &exp, 0); | |
4863 | } | |
4864 | else | |
4865 | { | |
4866 | symbolP = symbol_find_or_make (sym_name); | |
4867 | /* Permit register names to be redefined. */ | |
041ff4dd | 4868 | if (!reassign |
252b5132 RH |
4869 | && S_IS_DEFINED (symbolP) |
4870 | && S_GET_SEGMENT (symbolP) != reg_section) | |
4871 | as_bad (_("symbol `%s' already defined"), S_GET_NAME (symbolP)); | |
4872 | pseudo_set (symbolP); | |
4873 | } | |
4874 | ||
4875 | if (flag_mri) | |
041ff4dd NC |
4876 | { |
4877 | /* Check garbage after the expression. */ | |
4878 | ignore_rest_of_line (); | |
4879 | mri_comment_end (stop, stopc); | |
4880 | } | |
4881 | } | |
252b5132 | 4882 | |
041ff4dd | 4883 | /* .include -- include a file at this point. */ |
252b5132 | 4884 | |
041ff4dd | 4885 | void |
252b5132 | 4886 | s_include (arg) |
ab9da554 | 4887 | int arg ATTRIBUTE_UNUSED; |
252b5132 | 4888 | { |
252b5132 RH |
4889 | char *filename; |
4890 | int i; | |
4891 | FILE *try; | |
4892 | char *path; | |
4893 | ||
041ff4dd | 4894 | if (!flag_m68k_mri) |
252b5132 RH |
4895 | { |
4896 | filename = demand_copy_string (&i); | |
4897 | if (filename == NULL) | |
4898 | { | |
4899 | /* demand_copy_string has already printed an error and | |
4900 | called ignore_rest_of_line. */ | |
4901 | return; | |
4902 | } | |
4903 | } | |
4904 | else | |
4905 | { | |
4906 | SKIP_WHITESPACE (); | |
4907 | i = 0; | |
041ff4dd | 4908 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
4909 | && *input_line_pointer != ' ' |
4910 | && *input_line_pointer != '\t') | |
4911 | { | |
4912 | obstack_1grow (¬es, *input_line_pointer); | |
4913 | ++input_line_pointer; | |
4914 | ++i; | |
4915 | } | |
f0e652b4 | 4916 | |
252b5132 RH |
4917 | obstack_1grow (¬es, '\0'); |
4918 | filename = obstack_finish (¬es); | |
041ff4dd | 4919 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
4920 | ++input_line_pointer; |
4921 | } | |
f0e652b4 | 4922 | |
252b5132 RH |
4923 | demand_empty_rest_of_line (); |
4924 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 4925 | |
252b5132 RH |
4926 | for (i = 0; i < include_dir_count; i++) |
4927 | { | |
4928 | strcpy (path, include_dirs[i]); | |
4929 | strcat (path, "/"); | |
4930 | strcat (path, filename); | |
4931 | if (0 != (try = fopen (path, "r"))) | |
4932 | { | |
4933 | fclose (try); | |
4934 | goto gotit; | |
4935 | } | |
4936 | } | |
f0e652b4 | 4937 | |
252b5132 RH |
4938 | free (path); |
4939 | path = filename; | |
4940 | gotit: | |
041ff4dd | 4941 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 4942 | register_dependency (path); |
9f10757c | 4943 | input_scrub_insert_file (path); |
041ff4dd | 4944 | } |
252b5132 | 4945 | |
041ff4dd | 4946 | void |
252b5132 RH |
4947 | add_include_dir (path) |
4948 | char *path; | |
4949 | { | |
4950 | int i; | |
4951 | ||
4952 | if (include_dir_count == 0) | |
4953 | { | |
4954 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 4955 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
4956 | include_dir_count = 2; |
4957 | } | |
4958 | else | |
4959 | { | |
4960 | include_dir_count++; | |
041ff4dd NC |
4961 | include_dirs = |
4962 | (char **) realloc (include_dirs, | |
4963 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
4964 | } |
4965 | ||
041ff4dd | 4966 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
4967 | |
4968 | i = strlen (path); | |
4969 | if (i > include_dir_maxlen) | |
4970 | include_dir_maxlen = i; | |
041ff4dd | 4971 | } |
252b5132 RH |
4972 | \f |
4973 | /* Output debugging information to denote the source file. */ | |
4974 | ||
4975 | static void | |
4976 | generate_file_debug () | |
4977 | { | |
4978 | if (debug_type == DEBUG_STABS) | |
4979 | stabs_generate_asm_file (); | |
4980 | } | |
4981 | ||
4982 | /* Output line number debugging information for the current source line. */ | |
4983 | ||
4984 | void | |
4985 | generate_lineno_debug () | |
4986 | { | |
4987 | #ifdef ECOFF_DEBUGGING | |
041ff4dd | 4988 | /* ECOFF assemblers automatically generate debugging information. |
252b5132 RH |
4989 | FIXME: This should probably be handled elsewhere. */ |
4990 | if (debug_type == DEBUG_UNSPECIFIED) | |
4991 | { | |
4992 | if (ECOFF_DEBUGGING && ecoff_no_current_file ()) | |
041ff4dd | 4993 | debug_type = DEBUG_ECOFF; |
252b5132 RH |
4994 | else |
4995 | debug_type = DEBUG_NONE; | |
4996 | } | |
4997 | #endif | |
4998 | ||
4999 | switch (debug_type) | |
5000 | { | |
5001 | case DEBUG_UNSPECIFIED: | |
5002 | case DEBUG_NONE: | |
5003 | break; | |
5004 | case DEBUG_STABS: | |
5005 | stabs_generate_asm_lineno (); | |
5006 | break; | |
5007 | case DEBUG_ECOFF: | |
5008 | ecoff_generate_asm_lineno (); | |
5009 | break; | |
5010 | case DEBUG_DWARF: | |
5011 | case DEBUG_DWARF2: | |
85a39694 NC |
5012 | /* This cannot safely be done in a generic manner. A single |
5013 | binary instruction word may span mutliple lines of assembler | |
5014 | source and may occupy a variable number of bytes. Instead, | |
5015 | if a port wishes to support DWARF2 line number generation by | |
5016 | the assembler, it should add a call to dwarf2_generate_asm_lineno | |
5017 | inside md_assemble() at whatever point is appropriate. Note, | |
5018 | such a port should also define md_end and make sure that | |
5019 | dwarf2_finish is called, to emit the accumulated line information. */ | |
252b5132 RH |
5020 | break; |
5021 | } | |
5022 | } | |
5023 | ||
5024 | /* Output debugging information to mark a function entry point or end point. | |
5025 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5026 | ||
5027 | void | |
5028 | s_func (end_p) | |
5029 | int end_p; | |
5030 | { | |
5031 | do_s_func (end_p, NULL); | |
5032 | } | |
5033 | ||
5034 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5035 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5036 | ||
5037 | void | |
5038 | do_s_func (end_p, default_prefix) | |
5039 | int end_p; | |
5040 | const char *default_prefix; | |
5041 | { | |
5042 | /* Record the current function so that we can issue an error message for | |
5043 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5044 | arguments. */ | |
5045 | static char *current_name; | |
5046 | static char *current_label; | |
5047 | ||
5048 | if (end_p) | |
5049 | { | |
5050 | if (current_name == NULL) | |
5051 | { | |
5052 | as_bad (_("missing .func")); | |
5053 | ignore_rest_of_line (); | |
5054 | return; | |
5055 | } | |
5056 | ||
5057 | if (debug_type == DEBUG_STABS) | |
5058 | stabs_generate_asm_endfunc (current_name, current_label); | |
5059 | ||
5060 | current_name = current_label = NULL; | |
5061 | } | |
5062 | else /* ! end_p */ | |
5063 | { | |
041ff4dd NC |
5064 | char *name, *label; |
5065 | char delim1, delim2; | |
252b5132 RH |
5066 | |
5067 | if (current_name != NULL) | |
5068 | { | |
5069 | as_bad (_(".endfunc missing for previous .func")); | |
5070 | ignore_rest_of_line (); | |
5071 | return; | |
5072 | } | |
5073 | ||
5074 | name = input_line_pointer; | |
5075 | delim1 = get_symbol_end (); | |
5076 | name = xstrdup (name); | |
5077 | *input_line_pointer = delim1; | |
5078 | SKIP_WHITESPACE (); | |
5079 | if (*input_line_pointer != ',') | |
5080 | { | |
5081 | if (default_prefix) | |
5082 | asprintf (&label, "%s%s", default_prefix, name); | |
5083 | else | |
5084 | { | |
5085 | char leading_char = 0; | |
5086 | #ifdef BFD_ASSEMBLER | |
5087 | leading_char = bfd_get_symbol_leading_char (stdoutput); | |
5088 | #endif | |
5089 | /* Missing entry point, use function's name with the leading | |
5090 | char prepended. */ | |
5091 | if (leading_char) | |
5092 | asprintf (&label, "%c%s", leading_char, name); | |
5093 | else | |
5094 | label = name; | |
5095 | } | |
5096 | } | |
5097 | else | |
5098 | { | |
5099 | ++input_line_pointer; | |
5100 | SKIP_WHITESPACE (); | |
5101 | label = input_line_pointer; | |
5102 | delim2 = get_symbol_end (); | |
5103 | label = xstrdup (label); | |
5104 | *input_line_pointer = delim2; | |
5105 | } | |
5106 | ||
5107 | if (debug_type == DEBUG_STABS) | |
5108 | stabs_generate_asm_func (name, label); | |
5109 | ||
5110 | current_name = name; | |
5111 | current_label = label; | |
5112 | } | |
5113 | ||
5114 | demand_empty_rest_of_line (); | |
5115 | } | |
5116 | \f | |
041ff4dd | 5117 | void |
252b5132 | 5118 | s_ignore (arg) |
ab9da554 | 5119 | int arg ATTRIBUTE_UNUSED; |
252b5132 RH |
5120 | { |
5121 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
5122 | { | |
5123 | ++input_line_pointer; | |
5124 | } | |
5125 | ++input_line_pointer; | |
5126 | } | |
5127 | ||
252b5132 RH |
5128 | void |
5129 | read_print_statistics (file) | |
5130 | FILE *file; | |
5131 | { | |
5132 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5133 | } | |
5134 | ||
041ff4dd NC |
5135 | /* Inserts the given line into the input stream. |
5136 | ||
9f10757c TW |
5137 | This call avoids macro/conditionals nesting checking, since the contents of |
5138 | the line are assumed to replace the contents of a line already scanned. | |
5139 | ||
5140 | An appropriate use of this function would be substition of input lines when | |
5141 | called by md_start_line_hook(). The given line is assumed to already be | |
5142 | properly scrubbed. */ | |
5143 | ||
5144 | void | |
5145 | input_scrub_insert_line (line) | |
041ff4dd | 5146 | const char *line; |
9f10757c TW |
5147 | { |
5148 | sb newline; | |
5149 | sb_new (&newline); | |
5150 | sb_add_string (&newline, line); | |
5151 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5152 | sb_kill (&newline); | |
5153 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5154 | } | |
5155 | ||
5156 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5157 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5158 | |
5159 | void | |
5160 | input_scrub_insert_file (path) | |
041ff4dd | 5161 | char *path; |
9f10757c TW |
5162 | { |
5163 | input_scrub_include_file (path, input_line_pointer); | |
5164 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5165 | } |