Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* read.c - read a source file - |
f7e42eb4 | 2 | Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
f740e790 | 3 | 1998, 1999, 2000, 2001 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 | ||
252b5132 | 38 | #include "as.h" |
3882b010 | 39 | #include "safe-ctype.h" |
252b5132 RH |
40 | #include "subsegs.h" |
41 | #include "sb.h" | |
42 | #include "macro.h" | |
43 | #include "obstack.h" | |
44 | #include "listing.h" | |
45 | #include "ecoff.h" | |
46 | ||
47 | #ifndef TC_START_LABEL | |
48 | #define TC_START_LABEL(x,y) (x==':') | |
49 | #endif | |
50 | ||
8684e216 HPN |
51 | /* Set by the object-format or the target. */ |
52 | #ifndef TC_IMPLICIT_LCOMM_ALIGNMENT | |
041ff4dd NC |
53 | #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \ |
54 | do \ | |
55 | { \ | |
56 | if ((SIZE) >= 8) \ | |
57 | (P2VAR) = 3; \ | |
58 | else if ((SIZE) >= 4) \ | |
59 | (P2VAR) = 2; \ | |
60 | else if ((SIZE) >= 2) \ | |
61 | (P2VAR) = 1; \ | |
62 | else \ | |
63 | (P2VAR) = 0; \ | |
64 | } \ | |
65 | while (0) | |
8684e216 HPN |
66 | #endif |
67 | ||
041ff4dd | 68 | char *input_line_pointer; /*->next char of source file to parse. */ |
252b5132 RH |
69 | |
70 | #if BITS_PER_CHAR != 8 | |
71 | /* The following table is indexed by[(char)] and will break if | |
72 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
73 | die horribly; | |
74 | #endif | |
75 | ||
76 | #ifndef LEX_AT | |
77 | /* The m88k unfortunately uses @ as a label beginner. */ | |
78 | #define LEX_AT 0 | |
79 | #endif | |
80 | ||
81 | #ifndef LEX_BR | |
82 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
83 | #define LEX_BR 0 | |
84 | #endif | |
85 | ||
86 | #ifndef LEX_PCT | |
87 | /* The Delta 68k assembler permits % inside label names. */ | |
88 | #define LEX_PCT 0 | |
89 | #endif | |
90 | ||
91 | #ifndef LEX_QM | |
92 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
93 | #define LEX_QM 0 | |
94 | #endif | |
95 | ||
58b5739a | 96 | #ifndef LEX_HASH |
800eeca4 JW |
97 | /* The IA-64 assembler uses # as a suffix designating a symbol. We include |
98 | it in the symbol and strip it out in tc_canonicalize_symbol_name. */ | |
58b5739a RH |
99 | #define LEX_HASH 0 |
100 | #endif | |
101 | ||
252b5132 RH |
102 | #ifndef LEX_DOLLAR |
103 | /* The a29k assembler does not permits labels to start with $. */ | |
104 | #define LEX_DOLLAR 3 | |
105 | #endif | |
106 | ||
107 | #ifndef LEX_TILDE | |
108 | /* The Delta 68k assembler permits ~ at start of label names. */ | |
109 | #define LEX_TILDE 0 | |
110 | #endif | |
111 | ||
041ff4dd | 112 | /* Used by is_... macros. our ctype[]. */ |
ef99799a | 113 | char lex_type[256] = { |
252b5132 RH |
114 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ |
115 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
58b5739a | 116 | 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
252b5132 RH |
117 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
118 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ | |
119 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ | |
120 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ | |
041ff4dd | 121 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */ |
252b5132 RH |
122 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, |
123 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
124 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
125 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
126 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
127 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
128 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, | |
129 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 | |
130 | }; | |
131 | ||
041ff4dd NC |
132 | /* In: a character. |
133 | Out: 1 if this character ends a line. */ | |
ef99799a | 134 | char is_end_of_line[256] = { |
252b5132 | 135 | #ifdef CR_EOL |
b75c0c92 | 136 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 137 | #else |
b75c0c92 | 138 | 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */ |
252b5132 | 139 | #endif |
b75c0c92 AM |
140 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
141 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */ | |
ac743b2c | 142 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */ |
b75c0c92 AM |
143 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
144 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
145 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
146 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
147 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
148 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
149 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
150 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
151 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
0b545448 AM |
152 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ |
153 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */ | |
154 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */ | |
252b5132 | 155 | }; |
252b5132 | 156 | |
37d8bb27 NC |
157 | #ifdef IGNORE_OPCODE_CASE |
158 | char original_case_string[128]; | |
159 | #endif | |
160 | ||
041ff4dd | 161 | /* Functions private to this file. */ |
252b5132 | 162 | |
041ff4dd NC |
163 | static char *buffer; /* 1st char of each buffer of lines is here. */ |
164 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
252b5132 | 165 | |
041ff4dd NC |
166 | /* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1 |
167 | in the tc-<CPU>.h file. See the "Porting GAS" section of the | |
168 | internals manual. */ | |
252b5132 RH |
169 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; |
170 | ||
041ff4dd | 171 | static char *old_buffer; /* JF a hack. */ |
252b5132 RH |
172 | static char *old_input; |
173 | static char *old_limit; | |
174 | ||
041ff4dd | 175 | /* Variables for handling include file directory table. */ |
252b5132 | 176 | |
041ff4dd NC |
177 | /* Table of pointers to directories to search for .include's. */ |
178 | char **include_dirs; | |
179 | ||
180 | /* How many are in the table. */ | |
181 | int include_dir_count; | |
182 | ||
183 | /* Length of longest in table. */ | |
184 | int include_dir_maxlen = 1; | |
252b5132 RH |
185 | |
186 | #ifndef WORKING_DOT_WORD | |
187 | struct broken_word *broken_words; | |
188 | int new_broken_words; | |
189 | #endif | |
190 | ||
191 | /* The current offset into the absolute section. We don't try to | |
192 | build frags in the absolute section, since no data can be stored | |
193 | there. We just keep track of the current offset. */ | |
194 | addressT abs_section_offset; | |
195 | ||
196 | /* If this line had an MRI style label, it is stored in this variable. | |
197 | This is used by some of the MRI pseudo-ops. */ | |
198 | symbolS *line_label; | |
199 | ||
200 | /* This global variable is used to support MRI common sections. We | |
201 | translate such sections into a common symbol. This variable is | |
202 | non-NULL when we are in an MRI common section. */ | |
203 | symbolS *mri_common_symbol; | |
204 | ||
205 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we | |
206 | need to align to an even byte boundary unless the next pseudo-op is | |
207 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
208 | may be needed. */ | |
209 | static int mri_pending_align; | |
210 | ||
211 | #ifndef NO_LISTING | |
212 | #ifdef OBJ_ELF | |
213 | /* This variable is set to be non-zero if the next string we see might | |
214 | be the name of the source file in DWARF debugging information. See | |
215 | the comment in emit_expr for the format we look for. */ | |
216 | static int dwarf_file_string; | |
217 | #endif | |
218 | #endif | |
219 | ||
220 | static void cons_worker PARAMS ((int, int)); | |
2b47531b | 221 | static int scrub_from_string PARAMS ((char *, int)); |
252b5132 RH |
222 | static void do_align PARAMS ((int, char *, int, int)); |
223 | static void s_align PARAMS ((int, int)); | |
6d4d30bb | 224 | static void s_lcomm_internal PARAMS ((int, int)); |
252b5132 | 225 | static int hex_float PARAMS ((int, char *)); |
6d4d30bb AM |
226 | static inline int sizeof_sleb128 PARAMS ((offsetT)); |
227 | static inline int sizeof_uleb128 PARAMS ((valueT)); | |
228 | static inline int output_sleb128 PARAMS ((char *, offsetT)); | |
229 | static inline int output_uleb128 PARAMS ((char *, valueT)); | |
230 | static inline int output_big_sleb128 PARAMS ((char *, LITTLENUM_TYPE *, int)); | |
231 | static inline int output_big_uleb128 PARAMS ((char *, LITTLENUM_TYPE *, int)); | |
232 | static int output_big_leb128 PARAMS ((char *, LITTLENUM_TYPE *, int, int)); | |
252b5132 RH |
233 | static void do_org PARAMS ((segT, expressionS *, int)); |
234 | char *demand_copy_string PARAMS ((int *lenP)); | |
235 | static segT get_segmented_expression PARAMS ((expressionS *expP)); | |
236 | static segT get_known_segmented_expression PARAMS ((expressionS * expP)); | |
237 | static void pobegin PARAMS ((void)); | |
238 | static int get_line_sb PARAMS ((sb *)); | |
239 | static void generate_file_debug PARAMS ((void)); | |
240 | \f | |
252b5132 RH |
241 | void |
242 | read_begin () | |
243 | { | |
244 | const char *p; | |
245 | ||
246 | pobegin (); | |
247 | obj_read_begin_hook (); | |
248 | ||
249 | /* Something close -- but not too close -- to a multiple of 1024. | |
250 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
251 | obstack_begin (¬es, chunksize); | |
252 | obstack_begin (&cond_obstack, chunksize); | |
253 | ||
041ff4dd | 254 | /* Use machine dependent syntax. */ |
252b5132 RH |
255 | for (p = line_separator_chars; *p; p++) |
256 | is_end_of_line[(unsigned char) *p] = 1; | |
041ff4dd | 257 | /* Use more. FIXME-SOMEDAY. */ |
252b5132 RH |
258 | |
259 | if (flag_mri) | |
260 | lex_type['?'] = 3; | |
261 | } | |
262 | \f | |
041ff4dd | 263 | /* Set up pseudo-op tables. */ |
252b5132 RH |
264 | |
265 | static struct hash_control *po_hash; | |
266 | ||
ef99799a | 267 | static const pseudo_typeS potable[] = { |
252b5132 RH |
268 | {"abort", s_abort, 0}, |
269 | {"align", s_align_ptwo, 0}, | |
270 | {"ascii", stringer, 0}, | |
271 | {"asciz", stringer, 1}, | |
272 | {"balign", s_align_bytes, 0}, | |
273 | {"balignw", s_align_bytes, -2}, | |
274 | {"balignl", s_align_bytes, -4}, | |
041ff4dd | 275 | /* block */ |
252b5132 RH |
276 | {"byte", cons, 1}, |
277 | {"comm", s_comm, 0}, | |
278 | {"common", s_mri_common, 0}, | |
279 | {"common.s", s_mri_common, 1}, | |
280 | {"data", s_data, 0}, | |
281 | {"dc", cons, 2}, | |
282 | {"dc.b", cons, 1}, | |
283 | {"dc.d", float_cons, 'd'}, | |
284 | {"dc.l", cons, 4}, | |
285 | {"dc.s", float_cons, 'f'}, | |
286 | {"dc.w", cons, 2}, | |
287 | {"dc.x", float_cons, 'x'}, | |
288 | {"dcb", s_space, 2}, | |
289 | {"dcb.b", s_space, 1}, | |
290 | {"dcb.d", s_float_space, 'd'}, | |
291 | {"dcb.l", s_space, 4}, | |
292 | {"dcb.s", s_float_space, 'f'}, | |
293 | {"dcb.w", s_space, 2}, | |
294 | {"dcb.x", s_float_space, 'x'}, | |
295 | {"ds", s_space, 2}, | |
296 | {"ds.b", s_space, 1}, | |
297 | {"ds.d", s_space, 8}, | |
298 | {"ds.l", s_space, 4}, | |
299 | {"ds.p", s_space, 12}, | |
300 | {"ds.s", s_space, 4}, | |
301 | {"ds.w", s_space, 2}, | |
302 | {"ds.x", s_space, 12}, | |
303 | {"debug", s_ignore, 0}, | |
304 | #ifdef S_SET_DESC | |
305 | {"desc", s_desc, 0}, | |
306 | #endif | |
041ff4dd | 307 | /* dim */ |
252b5132 | 308 | {"double", float_cons, 'd'}, |
041ff4dd NC |
309 | /* dsect */ |
310 | {"eject", listing_eject, 0}, /* Formfeed listing. */ | |
252b5132 RH |
311 | {"else", s_else, 0}, |
312 | {"elsec", s_else, 0}, | |
3fd9f047 | 313 | {"elseif", s_elseif, (int) O_ne}, |
252b5132 RH |
314 | {"end", s_end, 0}, |
315 | {"endc", s_endif, 0}, | |
316 | {"endfunc", s_func, 1}, | |
317 | {"endif", s_endif, 0}, | |
7f28ab9d | 318 | {"endr", s_bad_endr, 0}, |
041ff4dd | 319 | /* endef */ |
252b5132 RH |
320 | {"equ", s_set, 0}, |
321 | {"equiv", s_set, 1}, | |
322 | {"err", s_err, 0}, | |
323 | {"exitm", s_mexit, 0}, | |
041ff4dd NC |
324 | /* extend */ |
325 | {"extern", s_ignore, 0}, /* We treat all undef as ext. */ | |
252b5132 RH |
326 | {"appfile", s_app_file, 1}, |
327 | {"appline", s_app_line, 0}, | |
328 | {"fail", s_fail, 0}, | |
329 | {"file", s_app_file, 0}, | |
330 | {"fill", s_fill, 0}, | |
331 | {"float", float_cons, 'f'}, | |
332 | {"format", s_ignore, 0}, | |
333 | {"func", s_func, 0}, | |
334 | {"global", s_globl, 0}, | |
335 | {"globl", s_globl, 0}, | |
336 | {"hword", cons, 2}, | |
337 | {"if", s_if, (int) O_ne}, | |
338 | {"ifc", s_ifc, 0}, | |
339 | {"ifdef", s_ifdef, 0}, | |
340 | {"ifeq", s_if, (int) O_eq}, | |
341 | {"ifeqs", s_ifeqs, 0}, | |
342 | {"ifge", s_if, (int) O_ge}, | |
343 | {"ifgt", s_if, (int) O_gt}, | |
344 | {"ifle", s_if, (int) O_le}, | |
345 | {"iflt", s_if, (int) O_lt}, | |
346 | {"ifnc", s_ifc, 1}, | |
347 | {"ifndef", s_ifdef, 1}, | |
348 | {"ifne", s_if, (int) O_ne}, | |
349 | {"ifnes", s_ifeqs, 1}, | |
350 | {"ifnotdef", s_ifdef, 1}, | |
7e005732 | 351 | {"incbin", s_incbin, 0}, |
252b5132 RH |
352 | {"include", s_include, 0}, |
353 | {"int", cons, 4}, | |
354 | {"irp", s_irp, 0}, | |
355 | {"irep", s_irp, 0}, | |
356 | {"irpc", s_irp, 1}, | |
357 | {"irepc", s_irp, 1}, | |
358 | {"lcomm", s_lcomm, 0}, | |
041ff4dd | 359 | {"lflags", listing_flags, 0}, /* Listing flags. */ |
252b5132 | 360 | {"linkonce", s_linkonce, 0}, |
041ff4dd | 361 | {"list", listing_list, 1}, /* Turn listing on. */ |
252b5132 RH |
362 | {"llen", listing_psize, 1}, |
363 | {"long", cons, 4}, | |
364 | {"lsym", s_lsym, 0}, | |
365 | {"macro", s_macro, 0}, | |
366 | {"mexit", s_mexit, 0}, | |
367 | {"mri", s_mri, 0}, | |
368 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
369 | {"name", s_ignore, 0}, | |
370 | {"noformat", s_ignore, 0}, | |
041ff4dd | 371 | {"nolist", listing_list, 0}, /* Turn listing off. */ |
252b5132 RH |
372 | {"nopage", listing_nopage, 0}, |
373 | {"octa", cons, 16}, | |
374 | {"offset", s_struct, 0}, | |
375 | {"org", s_org, 0}, | |
376 | {"p2align", s_align_ptwo, 0}, | |
377 | {"p2alignw", s_align_ptwo, -2}, | |
378 | {"p2alignl", s_align_ptwo, -4}, | |
379 | {"page", listing_eject, 0}, | |
380 | {"plen", listing_psize, 0}, | |
381 | {"print", s_print, 0}, | |
041ff4dd | 382 | {"psize", listing_psize, 0}, /* Set paper size. */ |
252b5132 RH |
383 | {"purgem", s_purgem, 0}, |
384 | {"quad", cons, 8}, | |
385 | {"rep", s_rept, 0}, | |
386 | {"rept", s_rept, 0}, | |
387 | {"rva", s_rva, 4}, | |
041ff4dd NC |
388 | {"sbttl", listing_title, 1}, /* Subtitle of listing. */ |
389 | /* scl */ | |
390 | /* sect */ | |
252b5132 RH |
391 | {"set", s_set, 0}, |
392 | {"short", cons, 2}, | |
393 | {"single", float_cons, 'f'}, | |
041ff4dd | 394 | /* size */ |
252b5132 RH |
395 | {"space", s_space, 0}, |
396 | {"skip", s_space, 0}, | |
397 | {"sleb128", s_leb128, 1}, | |
398 | {"spc", s_ignore, 0}, | |
399 | {"stabd", s_stab, 'd'}, | |
400 | {"stabn", s_stab, 'n'}, | |
401 | {"stabs", s_stab, 's'}, | |
402 | {"string", stringer, 1}, | |
403 | {"struct", s_struct, 0}, | |
041ff4dd | 404 | /* tag */ |
252b5132 RH |
405 | {"text", s_text, 0}, |
406 | ||
407 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
408 | won't be able to use it for a while -- probably a year or more. | |
409 | But once this has been released, check with gcc maintainers | |
410 | before deleting it or even changing the spelling. */ | |
411 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
412 | /* If we're folding case -- done for some targets, not necessarily | |
413 | all -- the above string in an input file will be converted to | |
414 | this one. Match it either way... */ | |
415 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
416 | ||
041ff4dd | 417 | {"title", listing_title, 0}, /* Listing title. */ |
252b5132 | 418 | {"ttl", listing_title, 0}, |
041ff4dd | 419 | /* type */ |
252b5132 | 420 | {"uleb128", s_leb128, 0}, |
041ff4dd NC |
421 | /* use */ |
422 | /* val */ | |
252b5132 RH |
423 | {"xcom", s_comm, 0}, |
424 | {"xdef", s_globl, 0}, | |
425 | {"xref", s_ignore, 0}, | |
426 | {"xstabs", s_xstab, 's'}, | |
427 | {"word", cons, 2}, | |
428 | {"zero", s_space, 0}, | |
041ff4dd | 429 | {NULL, NULL, 0} /* End sentinel. */ |
252b5132 RH |
430 | }; |
431 | ||
432 | static int pop_override_ok = 0; | |
433 | static const char *pop_table_name; | |
434 | ||
435 | void | |
436 | pop_insert (table) | |
437 | const pseudo_typeS *table; | |
438 | { | |
439 | const char *errtxt; | |
440 | const pseudo_typeS *pop; | |
441 | for (pop = table; pop->poc_name; pop++) | |
442 | { | |
443 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
444 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
445 | as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name, | |
446 | errtxt); | |
447 | } | |
448 | } | |
449 | ||
450 | #ifndef md_pop_insert | |
451 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
452 | #endif | |
453 | ||
454 | #ifndef obj_pop_insert | |
455 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
456 | #endif | |
457 | ||
041ff4dd | 458 | static void |
252b5132 RH |
459 | pobegin () |
460 | { | |
461 | po_hash = hash_new (); | |
462 | ||
041ff4dd | 463 | /* Do the target-specific pseudo ops. */ |
252b5132 RH |
464 | pop_table_name = "md"; |
465 | md_pop_insert (); | |
466 | ||
041ff4dd | 467 | /* Now object specific. Skip any that were in the target table. */ |
252b5132 RH |
468 | pop_table_name = "obj"; |
469 | pop_override_ok = 1; | |
470 | obj_pop_insert (); | |
471 | ||
041ff4dd | 472 | /* Now portable ones. Skip any that we've seen already. */ |
252b5132 RH |
473 | pop_table_name = "standard"; |
474 | pop_insert (potable); | |
475 | } | |
476 | \f | |
477 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ | |
478 | if (ignore_input ()) \ | |
479 | { \ | |
041ff4dd | 480 | while (!is_end_of_line[(unsigned char) *input_line_pointer++]) \ |
252b5132 RH |
481 | if (input_line_pointer == buffer_limit) \ |
482 | break; \ | |
483 | continue; \ | |
484 | } | |
485 | ||
252b5132 RH |
486 | /* This function is used when scrubbing the characters between #APP |
487 | and #NO_APP. */ | |
488 | ||
489 | static char *scrub_string; | |
490 | static char *scrub_string_end; | |
491 | ||
492 | static int | |
2b47531b ILT |
493 | scrub_from_string (buf, buflen) |
494 | char *buf; | |
495 | int buflen; | |
252b5132 | 496 | { |
2b47531b ILT |
497 | int copy; |
498 | ||
499 | copy = scrub_string_end - scrub_string; | |
500 | if (copy > buflen) | |
501 | copy = buflen; | |
502 | memcpy (buf, scrub_string, copy); | |
503 | scrub_string += copy; | |
504 | return copy; | |
252b5132 RH |
505 | } |
506 | ||
041ff4dd NC |
507 | /* We read the file, putting things into a web that represents what we |
508 | have been reading. */ | |
509 | void | |
252b5132 RH |
510 | read_a_source_file (name) |
511 | char *name; | |
512 | { | |
513 | register char c; | |
041ff4dd | 514 | register char *s; /* String of symbol, '\0' appended. */ |
252b5132 RH |
515 | register int temp; |
516 | pseudo_typeS *pop; | |
517 | ||
4c400d5e AM |
518 | #ifdef WARN_COMMENTS |
519 | found_comment = 0; | |
520 | #endif | |
521 | ||
252b5132 RH |
522 | buffer = input_scrub_new_file (name); |
523 | ||
524 | listing_file (name); | |
525 | listing_newline (NULL); | |
526 | register_dependency (name); | |
527 | ||
528 | /* Generate debugging information before we've read anything in to denote | |
529 | this file as the "main" source file and not a subordinate one | |
530 | (e.g. N_SO vs N_SOL in stabs). */ | |
531 | generate_file_debug (); | |
532 | ||
533 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) | |
041ff4dd NC |
534 | { /* We have another line to parse. */ |
535 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
252b5132 RH |
536 | contin: /* JF this goto is my fault I admit it. |
537 | Someone brave please re-write the whole | |
538 | input section here? Pleeze??? */ | |
539 | while (input_line_pointer < buffer_limit) | |
540 | { | |
041ff4dd | 541 | /* We have more of this buffer to parse. */ |
252b5132 | 542 | |
041ff4dd NC |
543 | /* We now have input_line_pointer->1st char of next line. |
544 | If input_line_pointer [-1] == '\n' then we just | |
545 | scanned another line: so bump line counters. */ | |
252b5132 RH |
546 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
547 | { | |
548 | #ifdef md_start_line_hook | |
549 | md_start_line_hook (); | |
550 | #endif | |
252b5132 RH |
551 | if (input_line_pointer[-1] == '\n') |
552 | bump_line_counters (); | |
553 | ||
554 | line_label = NULL; | |
555 | ||
abd63a32 | 556 | if (LABELS_WITHOUT_COLONS || flag_m68k_mri) |
252b5132 RH |
557 | { |
558 | /* Text at the start of a line must be a label, we | |
559 | run down and stick a colon in. */ | |
560 | if (is_name_beginner (*input_line_pointer)) | |
561 | { | |
562 | char *line_start = input_line_pointer; | |
563 | char c; | |
564 | int mri_line_macro; | |
565 | ||
566 | LISTING_NEWLINE (); | |
567 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
568 | ||
569 | c = get_symbol_end (); | |
570 | ||
571 | /* In MRI mode, the EQU and MACRO pseudoops must | |
572 | be handled specially. */ | |
573 | mri_line_macro = 0; | |
574 | if (flag_m68k_mri) | |
575 | { | |
576 | char *rest = input_line_pointer + 1; | |
577 | ||
578 | if (*rest == ':') | |
579 | ++rest; | |
580 | if (*rest == ' ' || *rest == '\t') | |
581 | ++rest; | |
582 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
583 | || strncasecmp (rest, "SET", 3) == 0) | |
584 | && (rest[3] == ' ' || rest[3] == '\t')) | |
585 | { | |
586 | input_line_pointer = rest + 3; | |
587 | equals (line_start, | |
588 | strncasecmp (rest, "SET", 3) == 0); | |
589 | continue; | |
590 | } | |
591 | if (strncasecmp (rest, "MACRO", 5) == 0 | |
592 | && (rest[5] == ' ' | |
593 | || rest[5] == '\t' | |
594 | || is_end_of_line[(unsigned char) rest[5]])) | |
595 | mri_line_macro = 1; | |
596 | } | |
597 | ||
598 | /* In MRI mode, we need to handle the MACRO | |
599 | pseudo-op specially: we don't want to put the | |
600 | symbol in the symbol table. */ | |
041ff4dd | 601 | if (!mri_line_macro |
a25c045a | 602 | #ifdef TC_START_LABEL_WITHOUT_COLON |
ef99799a KH |
603 | && TC_START_LABEL_WITHOUT_COLON(c, |
604 | input_line_pointer) | |
a25c045a | 605 | #endif |
ef99799a | 606 | ) |
252b5132 RH |
607 | line_label = colon (line_start); |
608 | else | |
609 | line_label = symbol_create (line_start, | |
610 | absolute_section, | |
611 | (valueT) 0, | |
612 | &zero_address_frag); | |
613 | ||
614 | *input_line_pointer = c; | |
615 | if (c == ':') | |
616 | input_line_pointer++; | |
617 | } | |
618 | } | |
619 | } | |
620 | ||
041ff4dd NC |
621 | /* We are at the begining of a line, or similar place. |
622 | We expect a well-formed assembler statement. | |
623 | A "symbol-name:" is a statement. | |
f0e652b4 | 624 | |
041ff4dd NC |
625 | Depending on what compiler is used, the order of these tests |
626 | may vary to catch most common case 1st. | |
627 | Each test is independent of all other tests at the (top) level. | |
628 | PLEASE make a compiler that doesn't use this assembler. | |
629 | It is crufty to waste a compiler's time encoding things for this | |
630 | assembler, which then wastes more time decoding it. | |
631 | (And communicating via (linear) files is silly! | |
632 | If you must pass stuff, please pass a tree!) */ | |
252b5132 RH |
633 | if ((c = *input_line_pointer++) == '\t' |
634 | || c == ' ' | |
635 | || c == '\f' | |
636 | || c == 0) | |
041ff4dd NC |
637 | c = *input_line_pointer++; |
638 | ||
639 | know (c != ' '); /* No further leading whitespace. */ | |
252b5132 RH |
640 | |
641 | #ifndef NO_LISTING | |
642 | /* If listing is on, and we are expanding a macro, then give | |
643 | the listing code the contents of the expanded line. */ | |
644 | if (listing) | |
645 | { | |
646 | if ((listing & LISTING_MACEXP) && macro_nest > 0) | |
647 | { | |
648 | char *copy; | |
649 | int len; | |
650 | ||
651 | /* Find the end of the current expanded macro line. */ | |
ef99799a | 652 | for (s = input_line_pointer - 1; *s; ++s) |
252b5132 RH |
653 | if (is_end_of_line[(unsigned char) *s]) |
654 | break; | |
655 | ||
656 | /* Copy it for safe keeping. Also give an indication of | |
657 | how much macro nesting is involved at this point. */ | |
ef99799a | 658 | len = s - (input_line_pointer - 1); |
252b5132 RH |
659 | copy = (char *) xmalloc (len + macro_nest + 2); |
660 | memset (copy, '>', macro_nest); | |
661 | copy[macro_nest] = ' '; | |
041ff4dd NC |
662 | memcpy (copy + macro_nest + 1, input_line_pointer - 1, len); |
663 | copy[macro_nest + 1 + len] = '\0'; | |
252b5132 RH |
664 | |
665 | /* Install the line with the listing facility. */ | |
666 | listing_newline (copy); | |
667 | } | |
668 | else | |
669 | listing_newline (NULL); | |
670 | } | |
671 | #endif | |
041ff4dd NC |
672 | /* C is the 1st significant character. |
673 | Input_line_pointer points after that character. */ | |
252b5132 RH |
674 | if (is_name_beginner (c)) |
675 | { | |
041ff4dd | 676 | /* Want user-defined label or pseudo/opcode. */ |
252b5132 RH |
677 | HANDLE_CONDITIONAL_ASSEMBLY (); |
678 | ||
679 | s = --input_line_pointer; | |
041ff4dd NC |
680 | c = get_symbol_end (); /* name's delimiter. */ |
681 | ||
682 | /* C is character after symbol. | |
683 | That character's place in the input line is now '\0'. | |
684 | S points to the beginning of the symbol. | |
685 | [In case of pseudo-op, s->'.'.] | |
686 | Input_line_pointer->'\0' where c was. */ | |
687 | if (TC_START_LABEL (c, input_line_pointer)) | |
252b5132 RH |
688 | { |
689 | if (flag_m68k_mri) | |
690 | { | |
691 | char *rest = input_line_pointer + 1; | |
692 | ||
693 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
252b5132 RH |
694 | if (*rest == ':') |
695 | ++rest; | |
f0e652b4 | 696 | |
252b5132 RH |
697 | if (*rest == ' ' || *rest == '\t') |
698 | ++rest; | |
f0e652b4 | 699 | |
252b5132 RH |
700 | if ((strncasecmp (rest, "EQU", 3) == 0 |
701 | || strncasecmp (rest, "SET", 3) == 0) | |
702 | && (rest[3] == ' ' || rest[3] == '\t')) | |
703 | { | |
704 | input_line_pointer = rest + 3; | |
705 | equals (s, 1); | |
706 | continue; | |
707 | } | |
708 | } | |
709 | ||
041ff4dd NC |
710 | line_label = colon (s); /* User-defined label. */ |
711 | /* Put ':' back for error messages' sake. */ | |
712 | *input_line_pointer++ = ':'; | |
713 | /* Input_line_pointer->after ':'. */ | |
252b5132 | 714 | SKIP_WHITESPACE (); |
252b5132 RH |
715 | } |
716 | else if (c == '=' | |
717 | || ((c == ' ' || c == '\t') | |
718 | && input_line_pointer[1] == '=' | |
719 | #ifdef TC_EQUAL_IN_INSN | |
041ff4dd | 720 | && !TC_EQUAL_IN_INSN (c, input_line_pointer) |
252b5132 RH |
721 | #endif |
722 | )) | |
723 | { | |
724 | equals (s, 1); | |
725 | demand_empty_rest_of_line (); | |
726 | } | |
727 | else | |
041ff4dd NC |
728 | { |
729 | /* Expect pseudo-op or machine instruction. */ | |
252b5132 RH |
730 | pop = NULL; |
731 | ||
252b5132 RH |
732 | #ifdef IGNORE_OPCODE_CASE |
733 | { | |
734 | char *s2 = s; | |
37d8bb27 NC |
735 | |
736 | strncpy (original_case_string, s2, sizeof (original_case_string)); | |
737 | original_case_string[sizeof (original_case_string) - 1] = 0; | |
ef99799a | 738 | |
252b5132 RH |
739 | while (*s2) |
740 | { | |
3882b010 | 741 | *s2 = TOLOWER (*s2); |
252b5132 RH |
742 | s2++; |
743 | } | |
744 | } | |
745 | #endif | |
abd63a32 | 746 | if (NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 RH |
747 | { |
748 | /* The MRI assembler and the m88k use pseudo-ops | |
749 | without a period. */ | |
750 | pop = (pseudo_typeS *) hash_find (po_hash, s); | |
751 | if (pop != NULL && pop->poc_handler == NULL) | |
752 | pop = NULL; | |
753 | } | |
754 | ||
755 | if (pop != NULL | |
041ff4dd | 756 | || (!flag_m68k_mri && *s == '.')) |
252b5132 | 757 | { |
041ff4dd | 758 | /* PSEUDO - OP. |
f0e652b4 | 759 | |
041ff4dd NC |
760 | WARNING: c has next char, which may be end-of-line. |
761 | We lookup the pseudo-op table with s+1 because we | |
762 | already know that the pseudo-op begins with a '.'. */ | |
252b5132 RH |
763 | |
764 | if (pop == NULL) | |
765 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
766 | ||
767 | /* In MRI mode, we may need to insert an | |
768 | automatic alignment directive. What a hack | |
769 | this is. */ | |
770 | if (mri_pending_align | |
771 | && (pop == NULL | |
041ff4dd NC |
772 | || !((pop->poc_handler == cons |
773 | && pop->poc_val == 1) | |
774 | || (pop->poc_handler == s_space | |
775 | && pop->poc_val == 1) | |
252b5132 | 776 | #ifdef tc_conditional_pseudoop |
041ff4dd | 777 | || tc_conditional_pseudoop (pop) |
252b5132 | 778 | #endif |
041ff4dd NC |
779 | || pop->poc_handler == s_if |
780 | || pop->poc_handler == s_ifdef | |
781 | || pop->poc_handler == s_ifc | |
782 | || pop->poc_handler == s_ifeqs | |
783 | || pop->poc_handler == s_else | |
784 | || pop->poc_handler == s_endif | |
785 | || pop->poc_handler == s_globl | |
786 | || pop->poc_handler == s_ignore))) | |
252b5132 RH |
787 | { |
788 | do_align (1, (char *) NULL, 0, 0); | |
789 | mri_pending_align = 0; | |
f0e652b4 | 790 | |
252b5132 RH |
791 | if (line_label != NULL) |
792 | { | |
2b47531b | 793 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
794 | S_SET_VALUE (line_label, frag_now_fix ()); |
795 | } | |
796 | } | |
797 | ||
041ff4dd | 798 | /* Print the error msg now, while we still can. */ |
252b5132 RH |
799 | if (pop == NULL) |
800 | { | |
0e389e77 | 801 | as_bad (_("unknown pseudo-op: `%s'"), s); |
252b5132 RH |
802 | *input_line_pointer = c; |
803 | s_ignore (0); | |
804 | continue; | |
805 | } | |
806 | ||
041ff4dd | 807 | /* Put it back for error messages etc. */ |
252b5132 RH |
808 | *input_line_pointer = c; |
809 | /* The following skip of whitespace is compulsory. | |
810 | A well shaped space is sometimes all that separates | |
041ff4dd | 811 | keyword from operands. */ |
252b5132 RH |
812 | if (c == ' ' || c == '\t') |
813 | input_line_pointer++; | |
041ff4dd NC |
814 | |
815 | /* Input_line is restored. | |
816 | Input_line_pointer->1st non-blank char | |
817 | after pseudo-operation. */ | |
252b5132 RH |
818 | (*pop->poc_handler) (pop->poc_val); |
819 | ||
820 | /* If that was .end, just get out now. */ | |
821 | if (pop->poc_handler == s_end) | |
822 | goto quit; | |
823 | } | |
824 | else | |
825 | { | |
1bf67e0d ILT |
826 | int inquote = 0; |
827 | #ifdef QUOTES_IN_INSN | |
828 | int inescape = 0; | |
829 | #endif | |
252b5132 | 830 | |
041ff4dd NC |
831 | /* WARNING: c has char, which may be end-of-line. */ |
832 | /* Also: input_line_pointer->`\0` where c was. */ | |
252b5132 RH |
833 | *input_line_pointer = c; |
834 | while (!is_end_of_line[(unsigned char) *input_line_pointer] | |
835 | || inquote | |
836 | #ifdef TC_EOL_IN_INSN | |
837 | || TC_EOL_IN_INSN (input_line_pointer) | |
838 | #endif | |
839 | ) | |
840 | { | |
841 | if (flag_m68k_mri && *input_line_pointer == '\'') | |
041ff4dd | 842 | inquote = !inquote; |
1c32af22 RH |
843 | #ifdef QUOTES_IN_INSN |
844 | if (inescape) | |
845 | inescape = 0; | |
846 | else if (*input_line_pointer == '"') | |
041ff4dd | 847 | inquote = !inquote; |
1c32af22 RH |
848 | else if (*input_line_pointer == '\\') |
849 | inescape = 1; | |
850 | #endif | |
252b5132 RH |
851 | input_line_pointer++; |
852 | } | |
853 | ||
854 | c = *input_line_pointer; | |
855 | *input_line_pointer = '\0'; | |
856 | ||
857 | generate_lineno_debug (); | |
858 | ||
859 | if (macro_defined) | |
860 | { | |
861 | sb out; | |
862 | const char *err; | |
041ff4dd | 863 | macro_entry *macro; |
252b5132 | 864 | |
9f10757c | 865 | if (check_macro (s, &out, '\0', &err, ¯o)) |
252b5132 RH |
866 | { |
867 | if (err != NULL) | |
4c63da97 | 868 | as_bad ("%s", err); |
252b5132 RH |
869 | *input_line_pointer++ = c; |
870 | input_scrub_include_sb (&out, | |
9f10757c | 871 | input_line_pointer, 1); |
252b5132 RH |
872 | sb_kill (&out); |
873 | buffer_limit = | |
874 | input_scrub_next_buffer (&input_line_pointer); | |
9f10757c | 875 | #ifdef md_macro_info |
041ff4dd | 876 | md_macro_info (macro); |
9f10757c | 877 | #endif |
252b5132 RH |
878 | continue; |
879 | } | |
880 | } | |
881 | ||
882 | if (mri_pending_align) | |
883 | { | |
884 | do_align (1, (char *) NULL, 0, 0); | |
885 | mri_pending_align = 0; | |
886 | if (line_label != NULL) | |
887 | { | |
2b47531b | 888 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
889 | S_SET_VALUE (line_label, frag_now_fix ()); |
890 | } | |
891 | } | |
892 | ||
041ff4dd | 893 | md_assemble (s); /* Assemble 1 instruction. */ |
252b5132 RH |
894 | |
895 | *input_line_pointer++ = c; | |
896 | ||
897 | /* We resume loop AFTER the end-of-line from | |
041ff4dd NC |
898 | this instruction. */ |
899 | } | |
900 | } | |
252b5132 | 901 | continue; |
041ff4dd | 902 | } |
252b5132 RH |
903 | |
904 | /* Empty statement? */ | |
905 | if (is_end_of_line[(unsigned char) c]) | |
906 | continue; | |
907 | ||
3882b010 | 908 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c)) |
252b5132 | 909 | { |
041ff4dd | 910 | /* local label ("4:") */ |
252b5132 RH |
911 | char *backup = input_line_pointer; |
912 | ||
913 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
914 | ||
915 | temp = c - '0'; | |
916 | ||
041ff4dd | 917 | /* Read the whole number. */ |
3882b010 | 918 | while (ISDIGIT (*input_line_pointer)) |
252b5132 RH |
919 | { |
920 | temp = (temp * 10) + *input_line_pointer - '0'; | |
921 | ++input_line_pointer; | |
041ff4dd | 922 | } |
252b5132 RH |
923 | |
924 | if (LOCAL_LABELS_DOLLAR | |
925 | && *input_line_pointer == '$' | |
926 | && *(input_line_pointer + 1) == ':') | |
927 | { | |
928 | input_line_pointer += 2; | |
929 | ||
930 | if (dollar_label_defined (temp)) | |
931 | { | |
932 | as_fatal (_("label \"%d$\" redefined"), temp); | |
933 | } | |
934 | ||
935 | define_dollar_label (temp); | |
936 | colon (dollar_label_name (temp, 0)); | |
937 | continue; | |
938 | } | |
939 | ||
940 | if (LOCAL_LABELS_FB | |
941 | && *input_line_pointer++ == ':') | |
942 | { | |
943 | fb_label_instance_inc (temp); | |
944 | colon (fb_label_name (temp, 0)); | |
945 | continue; | |
946 | } | |
947 | ||
948 | input_line_pointer = backup; | |
949 | } /* local label ("4:") */ | |
950 | ||
951 | if (c && strchr (line_comment_chars, c)) | |
041ff4dd | 952 | { /* Its a comment. Better say APP or NO_APP. */ |
252b5132 RH |
953 | char *ends; |
954 | char *new_buf; | |
955 | char *new_tmp; | |
956 | unsigned int new_length; | |
957 | char *tmp_buf = 0; | |
958 | ||
959 | bump_line_counters (); | |
960 | s = input_line_pointer; | |
961 | if (strncmp (s, "APP\n", 4)) | |
962 | continue; /* We ignore it */ | |
963 | s += 4; | |
964 | ||
965 | ends = strstr (s, "#NO_APP\n"); | |
966 | ||
967 | if (!ends) | |
968 | { | |
969 | unsigned int tmp_len; | |
970 | unsigned int num; | |
971 | ||
972 | /* The end of the #APP wasn't in this buffer. We | |
973 | keep reading in buffers until we find the #NO_APP | |
974 | that goes with this #APP There is one. The specs | |
041ff4dd | 975 | guarentee it... */ |
252b5132 RH |
976 | tmp_len = buffer_limit - s; |
977 | tmp_buf = xmalloc (tmp_len + 1); | |
978 | memcpy (tmp_buf, s, tmp_len); | |
979 | do | |
980 | { | |
981 | new_tmp = input_scrub_next_buffer (&buffer); | |
982 | if (!new_tmp) | |
983 | break; | |
984 | else | |
985 | buffer_limit = new_tmp; | |
986 | input_line_pointer = buffer; | |
987 | ends = strstr (buffer, "#NO_APP\n"); | |
988 | if (ends) | |
989 | num = ends - buffer; | |
990 | else | |
991 | num = buffer_limit - buffer; | |
992 | ||
993 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
994 | memcpy (tmp_buf + tmp_len, buffer, num); | |
995 | tmp_len += num; | |
996 | } | |
997 | while (!ends); | |
998 | ||
999 | input_line_pointer = ends ? ends + 8 : NULL; | |
1000 | ||
1001 | s = tmp_buf; | |
1002 | ends = s + tmp_len; | |
1003 | ||
1004 | } | |
1005 | else | |
1006 | { | |
1007 | input_line_pointer = ends + 8; | |
1008 | } | |
1009 | ||
1010 | scrub_string = s; | |
1011 | scrub_string_end = ends; | |
1012 | ||
1013 | new_length = ends - s; | |
1014 | new_buf = (char *) xmalloc (new_length); | |
1015 | new_tmp = new_buf; | |
1016 | for (;;) | |
1017 | { | |
1018 | int space; | |
1019 | int size; | |
1020 | ||
1021 | space = (new_buf + new_length) - new_tmp; | |
1022 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
1023 | ||
1024 | if (size < space) | |
1025 | { | |
1026 | new_tmp += size; | |
1027 | break; | |
1028 | } | |
1029 | ||
1030 | new_buf = xrealloc (new_buf, new_length + 100); | |
1031 | new_tmp = new_buf + new_length; | |
1032 | new_length += 100; | |
1033 | } | |
1034 | ||
1035 | if (tmp_buf) | |
1036 | free (tmp_buf); | |
1037 | old_buffer = buffer; | |
1038 | old_input = input_line_pointer; | |
1039 | old_limit = buffer_limit; | |
1040 | buffer = new_buf; | |
1041 | input_line_pointer = new_buf; | |
1042 | buffer_limit = new_tmp; | |
f0e652b4 | 1043 | |
252b5132 RH |
1044 | continue; |
1045 | } | |
1046 | ||
1047 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1048 | ||
1049 | #ifdef tc_unrecognized_line | |
1050 | if (tc_unrecognized_line (c)) | |
1051 | continue; | |
1052 | #endif | |
0e389e77 AM |
1053 | input_line_pointer--; |
1054 | /* Report unknown char as ignored. */ | |
252b5132 | 1055 | ignore_rest_of_line (); |
041ff4dd | 1056 | } |
252b5132 RH |
1057 | |
1058 | #ifdef md_after_pass_hook | |
1059 | md_after_pass_hook (); | |
1060 | #endif | |
1061 | ||
1062 | if (old_buffer) | |
1063 | { | |
1064 | free (buffer); | |
1065 | bump_line_counters (); | |
1066 | if (old_input != 0) | |
1067 | { | |
1068 | buffer = old_buffer; | |
1069 | input_line_pointer = old_input; | |
1070 | buffer_limit = old_limit; | |
1071 | old_buffer = 0; | |
1072 | goto contin; | |
1073 | } | |
1074 | } | |
041ff4dd | 1075 | } |
252b5132 RH |
1076 | |
1077 | quit: | |
1078 | ||
1079 | #ifdef md_cleanup | |
041ff4dd | 1080 | md_cleanup (); |
252b5132 | 1081 | #endif |
041ff4dd NC |
1082 | /* Close the input file. */ |
1083 | input_scrub_close (); | |
4c400d5e AM |
1084 | #ifdef WARN_COMMENTS |
1085 | { | |
1086 | if (warn_comment && found_comment) | |
1087 | as_warn_where (found_comment_file, found_comment, | |
1088 | "first comment found here"); | |
1089 | } | |
1090 | #endif | |
252b5132 RH |
1091 | } |
1092 | ||
1093 | /* For most MRI pseudo-ops, the line actually ends at the first | |
1094 | nonquoted space. This function looks for that point, stuffs a null | |
1095 | in, and sets *STOPCP to the character that used to be there, and | |
1096 | returns the location. | |
1097 | ||
1098 | Until I hear otherwise, I am going to assume that this is only true | |
1099 | for the m68k MRI assembler. */ | |
1100 | ||
1101 | char * | |
1102 | mri_comment_field (stopcp) | |
1103 | char *stopcp; | |
1104 | { | |
252b5132 | 1105 | char *s; |
041ff4dd | 1106 | #ifdef TC_M68K |
252b5132 RH |
1107 | int inquote = 0; |
1108 | ||
1109 | know (flag_m68k_mri); | |
1110 | ||
1111 | for (s = input_line_pointer; | |
041ff4dd | 1112 | ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') |
252b5132 RH |
1113 | || inquote); |
1114 | s++) | |
1115 | { | |
1116 | if (*s == '\'') | |
041ff4dd | 1117 | inquote = !inquote; |
252b5132 | 1118 | } |
252b5132 | 1119 | #else |
041ff4dd NC |
1120 | for (s = input_line_pointer; |
1121 | !is_end_of_line[(unsigned char) *s]; | |
1122 | s++) | |
252b5132 | 1123 | ; |
041ff4dd | 1124 | #endif |
252b5132 RH |
1125 | *stopcp = *s; |
1126 | *s = '\0'; | |
f0e652b4 | 1127 | |
252b5132 | 1128 | return s; |
252b5132 RH |
1129 | } |
1130 | ||
1131 | /* Skip to the end of an MRI comment field. */ | |
1132 | ||
1133 | void | |
1134 | mri_comment_end (stop, stopc) | |
1135 | char *stop; | |
1136 | int stopc; | |
1137 | { | |
1138 | know (flag_mri); | |
1139 | ||
1140 | input_line_pointer = stop; | |
1141 | *stop = stopc; | |
041ff4dd | 1142 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1143 | ++input_line_pointer; |
1144 | } | |
1145 | ||
041ff4dd | 1146 | void |
252b5132 | 1147 | s_abort (ignore) |
ab9da554 | 1148 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1149 | { |
1150 | as_fatal (_(".abort detected. Abandoning ship.")); | |
1151 | } | |
1152 | ||
1153 | /* Guts of .align directive. N is the power of two to which to align. | |
1154 | FILL may be NULL, or it may point to the bytes of the fill pattern. | |
1155 | LEN is the length of whatever FILL points to, if anything. MAX is | |
1156 | the maximum number of characters to skip when doing the alignment, | |
1157 | or 0 if there is no maximum. */ | |
1158 | ||
041ff4dd | 1159 | static void |
252b5132 RH |
1160 | do_align (n, fill, len, max) |
1161 | int n; | |
1162 | char *fill; | |
1163 | int len; | |
1164 | int max; | |
1165 | { | |
ebeb9253 AM |
1166 | if (now_seg == absolute_section) |
1167 | { | |
1168 | if (fill != NULL) | |
1169 | while (len-- > 0) | |
1170 | if (*fill++ != '\0') | |
1171 | { | |
1172 | as_warn (_("ignoring fill value in absolute section")); | |
1173 | break; | |
1174 | } | |
1175 | fill = NULL; | |
1176 | len = 0; | |
1177 | } | |
1178 | ||
252b5132 RH |
1179 | #ifdef md_do_align |
1180 | md_do_align (n, fill, len, max, just_record_alignment); | |
1181 | #endif | |
1182 | ||
041ff4dd | 1183 | /* Only make a frag if we HAVE to... */ |
252b5132 RH |
1184 | if (n != 0 && !need_pass_2) |
1185 | { | |
0a9ef439 RH |
1186 | if (fill == NULL) |
1187 | { | |
1188 | if (subseg_text_p (now_seg)) | |
1189 | frag_align_code (n, max); | |
1190 | else | |
1191 | frag_align (n, 0, max); | |
1192 | } | |
1193 | else if (len <= 1) | |
252b5132 RH |
1194 | frag_align (n, *fill, max); |
1195 | else | |
1196 | frag_align_pattern (n, fill, len, max); | |
1197 | } | |
1198 | ||
1199 | #ifdef md_do_align | |
1200 | just_record_alignment: | |
1201 | #endif | |
1202 | ||
bea9907b | 1203 | record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER); |
252b5132 RH |
1204 | } |
1205 | ||
1206 | /* Handle the .align pseudo-op. A positive ARG is a default alignment | |
1207 | (in bytes). A negative ARG is the negative of the length of the | |
1208 | fill pattern. BYTES_P is non-zero if the alignment value should be | |
1209 | interpreted as the byte boundary, rather than the power of 2. */ | |
1210 | ||
1211 | static void | |
1212 | s_align (arg, bytes_p) | |
1213 | int arg; | |
1214 | int bytes_p; | |
1215 | { | |
1216 | register unsigned int align; | |
1217 | char *stop = NULL; | |
1218 | char stopc; | |
1219 | offsetT fill = 0; | |
1220 | int max; | |
1221 | int fill_p; | |
1222 | ||
1223 | if (flag_mri) | |
1224 | stop = mri_comment_field (&stopc); | |
1225 | ||
1226 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
1227 | { | |
1228 | if (arg < 0) | |
1229 | align = 0; | |
1230 | else | |
041ff4dd | 1231 | align = arg; /* Default value from pseudo-op table. */ |
252b5132 RH |
1232 | } |
1233 | else | |
1234 | { | |
1235 | align = get_absolute_expression (); | |
1236 | SKIP_WHITESPACE (); | |
1237 | } | |
1238 | ||
1239 | if (bytes_p) | |
1240 | { | |
1241 | /* Convert to a power of 2. */ | |
1242 | if (align != 0) | |
1243 | { | |
1244 | unsigned int i; | |
1245 | ||
1246 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
1247 | ; | |
1248 | if (align != 1) | |
0e389e77 | 1249 | as_bad (_("alignment not a power of 2")); |
f0e652b4 | 1250 | |
252b5132 RH |
1251 | align = i; |
1252 | } | |
1253 | } | |
1254 | ||
1255 | if (align > 15) | |
1256 | { | |
1257 | align = 15; | |
0e389e77 | 1258 | as_warn (_("alignment too large: %u assumed"), align); |
252b5132 RH |
1259 | } |
1260 | ||
1261 | if (*input_line_pointer != ',') | |
1262 | { | |
1263 | fill_p = 0; | |
1264 | max = 0; | |
1265 | } | |
1266 | else | |
1267 | { | |
1268 | ++input_line_pointer; | |
1269 | if (*input_line_pointer == ',') | |
1270 | fill_p = 0; | |
1271 | else | |
1272 | { | |
1273 | fill = get_absolute_expression (); | |
1274 | SKIP_WHITESPACE (); | |
1275 | fill_p = 1; | |
1276 | } | |
1277 | ||
1278 | if (*input_line_pointer != ',') | |
1279 | max = 0; | |
1280 | else | |
1281 | { | |
1282 | ++input_line_pointer; | |
1283 | max = get_absolute_expression (); | |
1284 | } | |
1285 | } | |
1286 | ||
041ff4dd | 1287 | if (!fill_p) |
252b5132 RH |
1288 | { |
1289 | if (arg < 0) | |
1290 | as_warn (_("expected fill pattern missing")); | |
1291 | do_align (align, (char *) NULL, 0, max); | |
1292 | } | |
1293 | else | |
1294 | { | |
1295 | int fill_len; | |
1296 | ||
1297 | if (arg >= 0) | |
1298 | fill_len = 1; | |
1299 | else | |
041ff4dd | 1300 | fill_len = -arg; |
252b5132 RH |
1301 | if (fill_len <= 1) |
1302 | { | |
1303 | char fill_char; | |
1304 | ||
1305 | fill_char = fill; | |
1306 | do_align (align, &fill_char, fill_len, max); | |
1307 | } | |
1308 | else | |
1309 | { | |
1310 | char ab[16]; | |
1311 | ||
1312 | if ((size_t) fill_len > sizeof ab) | |
1313 | abort (); | |
1314 | md_number_to_chars (ab, fill, fill_len); | |
1315 | do_align (align, ab, fill_len, max); | |
1316 | } | |
1317 | } | |
1318 | ||
1319 | demand_empty_rest_of_line (); | |
1320 | ||
1321 | if (flag_mri) | |
1322 | mri_comment_end (stop, stopc); | |
1323 | } | |
1324 | ||
1325 | /* Handle the .align pseudo-op on machines where ".align 4" means | |
1326 | align to a 4 byte boundary. */ | |
1327 | ||
041ff4dd | 1328 | void |
252b5132 RH |
1329 | s_align_bytes (arg) |
1330 | int arg; | |
1331 | { | |
1332 | s_align (arg, 1); | |
1333 | } | |
1334 | ||
1335 | /* Handle the .align pseudo-op on machines where ".align 4" means align | |
1336 | to a 2**4 boundary. */ | |
1337 | ||
041ff4dd | 1338 | void |
252b5132 RH |
1339 | s_align_ptwo (arg) |
1340 | int arg; | |
1341 | { | |
1342 | s_align (arg, 0); | |
1343 | } | |
1344 | ||
041ff4dd | 1345 | void |
252b5132 | 1346 | s_comm (ignore) |
ab9da554 | 1347 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1348 | { |
1349 | register char *name; | |
1350 | register char c; | |
1351 | register char *p; | |
1352 | offsetT temp; | |
1353 | register symbolS *symbolP; | |
1354 | char *stop = NULL; | |
1355 | char stopc; | |
1356 | ||
1357 | if (flag_mri) | |
1358 | stop = mri_comment_field (&stopc); | |
1359 | ||
1360 | name = input_line_pointer; | |
1361 | c = get_symbol_end (); | |
041ff4dd | 1362 | /* Just after name is now '\0'. */ |
252b5132 RH |
1363 | p = input_line_pointer; |
1364 | *p = c; | |
0e389e77 AM |
1365 | |
1366 | if (name == p) | |
1367 | { | |
1368 | as_bad (_("expected symbol name")); | |
1369 | discard_rest_of_line (); | |
1370 | return; | |
1371 | } | |
1372 | ||
252b5132 | 1373 | SKIP_WHITESPACE (); |
f0e652b4 | 1374 | |
252b5132 RH |
1375 | if (*input_line_pointer != ',') |
1376 | { | |
0e389e77 AM |
1377 | *p = 0; |
1378 | as_bad (_("expected comma after \"%s\""), name); | |
1379 | *p = c; | |
252b5132 RH |
1380 | ignore_rest_of_line (); |
1381 | if (flag_mri) | |
1382 | mri_comment_end (stop, stopc); | |
1383 | return; | |
1384 | } | |
f0e652b4 | 1385 | |
252b5132 | 1386 | input_line_pointer++; /* skip ',' */ |
f0e652b4 | 1387 | |
252b5132 RH |
1388 | if ((temp = get_absolute_expression ()) < 0) |
1389 | { | |
0e389e77 | 1390 | as_warn (_(".COMMon length (%ld) < 0 ignored"), (long) temp); |
252b5132 RH |
1391 | ignore_rest_of_line (); |
1392 | if (flag_mri) | |
1393 | mri_comment_end (stop, stopc); | |
1394 | return; | |
1395 | } | |
f0e652b4 | 1396 | |
252b5132 RH |
1397 | *p = 0; |
1398 | symbolP = symbol_find_or_make (name); | |
1399 | *p = c; | |
f0e652b4 | 1400 | |
041ff4dd | 1401 | if (S_IS_DEFINED (symbolP) && !S_IS_COMMON (symbolP)) |
252b5132 | 1402 | { |
0e389e77 | 1403 | as_bad (_("symbol `%s' is already defined"), |
252b5132 RH |
1404 | S_GET_NAME (symbolP)); |
1405 | ignore_rest_of_line (); | |
1406 | if (flag_mri) | |
1407 | mri_comment_end (stop, stopc); | |
1408 | return; | |
1409 | } | |
f0e652b4 | 1410 | |
252b5132 RH |
1411 | if (S_GET_VALUE (symbolP)) |
1412 | { | |
1413 | if (S_GET_VALUE (symbolP) != (valueT) temp) | |
0e389e77 | 1414 | as_bad (_("length of .comm \"%s\" is already %ld; not changing to %ld"), |
252b5132 RH |
1415 | S_GET_NAME (symbolP), |
1416 | (long) S_GET_VALUE (symbolP), | |
1417 | (long) temp); | |
1418 | } | |
1419 | else | |
1420 | { | |
1421 | S_SET_VALUE (symbolP, (valueT) temp); | |
1422 | S_SET_EXTERNAL (symbolP); | |
1423 | } | |
1424 | #ifdef OBJ_VMS | |
1425 | { | |
1426 | extern int flag_one; | |
041ff4dd | 1427 | if (!temp || !flag_one) |
252b5132 RH |
1428 | S_GET_OTHER(symbolP) = const_flag; |
1429 | } | |
1430 | #endif /* not OBJ_VMS */ | |
1431 | know (symbolP->sy_frag == &zero_address_frag); | |
1432 | ||
1433 | demand_empty_rest_of_line (); | |
1434 | ||
1435 | if (flag_mri) | |
1436 | mri_comment_end (stop, stopc); | |
1437 | } /* s_comm() */ | |
1438 | ||
1439 | /* The MRI COMMON pseudo-op. We handle this by creating a common | |
1440 | symbol with the appropriate name. We make s_space do the right | |
1441 | thing by increasing the size. */ | |
1442 | ||
1443 | void | |
1444 | s_mri_common (small) | |
ab9da554 | 1445 | int small ATTRIBUTE_UNUSED; |
252b5132 RH |
1446 | { |
1447 | char *name; | |
1448 | char c; | |
1449 | char *alc = NULL; | |
1450 | symbolS *sym; | |
1451 | offsetT align; | |
1452 | char *stop = NULL; | |
1453 | char stopc; | |
1454 | ||
041ff4dd | 1455 | if (!flag_mri) |
252b5132 RH |
1456 | { |
1457 | s_comm (0); | |
1458 | return; | |
1459 | } | |
1460 | ||
1461 | stop = mri_comment_field (&stopc); | |
1462 | ||
1463 | SKIP_WHITESPACE (); | |
1464 | ||
1465 | name = input_line_pointer; | |
3882b010 | 1466 | if (!ISDIGIT (*name)) |
252b5132 RH |
1467 | c = get_symbol_end (); |
1468 | else | |
1469 | { | |
1470 | do | |
1471 | { | |
1472 | ++input_line_pointer; | |
1473 | } | |
3882b010 | 1474 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 1475 | |
252b5132 RH |
1476 | c = *input_line_pointer; |
1477 | *input_line_pointer = '\0'; | |
1478 | ||
1479 | if (line_label != NULL) | |
1480 | { | |
1481 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) | |
1482 | + (input_line_pointer - name) | |
1483 | + 1); | |
1484 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); | |
1485 | name = alc; | |
1486 | } | |
1487 | } | |
1488 | ||
1489 | sym = symbol_find_or_make (name); | |
1490 | *input_line_pointer = c; | |
1491 | if (alc != NULL) | |
1492 | free (alc); | |
1493 | ||
1494 | if (*input_line_pointer != ',') | |
1495 | align = 0; | |
1496 | else | |
1497 | { | |
1498 | ++input_line_pointer; | |
1499 | align = get_absolute_expression (); | |
1500 | } | |
1501 | ||
041ff4dd | 1502 | if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym)) |
252b5132 | 1503 | { |
0e389e77 | 1504 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym)); |
252b5132 RH |
1505 | ignore_rest_of_line (); |
1506 | mri_comment_end (stop, stopc); | |
1507 | return; | |
1508 | } | |
1509 | ||
1510 | S_SET_EXTERNAL (sym); | |
1511 | mri_common_symbol = sym; | |
1512 | ||
1513 | #ifdef S_SET_ALIGN | |
1514 | if (align != 0) | |
1515 | S_SET_ALIGN (sym, align); | |
1516 | #endif | |
1517 | ||
1518 | if (line_label != NULL) | |
1519 | { | |
2b47531b ILT |
1520 | expressionS exp; |
1521 | exp.X_op = O_symbol; | |
1522 | exp.X_add_symbol = sym; | |
1523 | exp.X_add_number = 0; | |
1524 | symbol_set_value_expression (line_label, &exp); | |
1525 | symbol_set_frag (line_label, &zero_address_frag); | |
252b5132 RH |
1526 | S_SET_SEGMENT (line_label, expr_section); |
1527 | } | |
1528 | ||
1529 | /* FIXME: We just ignore the small argument, which distinguishes | |
1530 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1531 | ||
1532 | /* Ignore the type and hptype. */ | |
1533 | if (*input_line_pointer == ',') | |
1534 | input_line_pointer += 2; | |
1535 | if (*input_line_pointer == ',') | |
1536 | input_line_pointer += 2; | |
1537 | ||
1538 | demand_empty_rest_of_line (); | |
1539 | ||
1540 | mri_comment_end (stop, stopc); | |
1541 | } | |
1542 | ||
1543 | void | |
1544 | s_data (ignore) | |
ab9da554 | 1545 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1546 | { |
1547 | segT section; | |
1548 | register int temp; | |
1549 | ||
1550 | temp = get_absolute_expression (); | |
1551 | if (flag_readonly_data_in_text) | |
1552 | { | |
1553 | section = text_section; | |
1554 | temp += 1000; | |
1555 | } | |
1556 | else | |
1557 | section = data_section; | |
1558 | ||
1559 | subseg_set (section, (subsegT) temp); | |
1560 | ||
1561 | #ifdef OBJ_VMS | |
1562 | const_flag = 0; | |
1563 | #endif | |
1564 | demand_empty_rest_of_line (); | |
1565 | } | |
1566 | ||
1567 | /* Handle the .appfile pseudo-op. This is automatically generated by | |
1568 | do_scrub_chars when a preprocessor # line comment is seen with a | |
1569 | file name. This default definition may be overridden by the object | |
1570 | or CPU specific pseudo-ops. This function is also the default | |
1571 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1572 | .file. */ | |
1573 | ||
041ff4dd | 1574 | void |
252b5132 RH |
1575 | s_app_file (appfile) |
1576 | int appfile; | |
1577 | { | |
1578 | register char *s; | |
1579 | int length; | |
1580 | ||
041ff4dd | 1581 | /* Some assemblers tolerate immediately following '"'. */ |
252b5132 RH |
1582 | if ((s = demand_copy_string (&length)) != 0) |
1583 | { | |
1584 | /* If this is a fake .appfile, a fake newline was inserted into | |
1585 | the buffer. Passing -2 to new_logical_line tells it to | |
1586 | account for it. */ | |
1587 | int may_omit | |
041ff4dd | 1588 | = (!new_logical_line (s, appfile ? -2 : -1) && appfile); |
252b5132 RH |
1589 | |
1590 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
1591 | backquote. */ | |
1592 | if (flag_m68k_mri | |
1593 | && *input_line_pointer == '\'' | |
1594 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1595 | ++input_line_pointer; | |
1596 | ||
1597 | demand_empty_rest_of_line (); | |
041ff4dd | 1598 | if (!may_omit) |
252b5132 RH |
1599 | { |
1600 | #ifdef LISTING | |
1601 | if (listing) | |
1602 | listing_source_file (s); | |
1603 | #endif | |
1604 | register_dependency (s); | |
1605 | #ifdef obj_app_file | |
1606 | obj_app_file (s); | |
1607 | #endif | |
1608 | } | |
1609 | } | |
1610 | } | |
1611 | ||
1612 | /* Handle the .appline pseudo-op. This is automatically generated by | |
1613 | do_scrub_chars when a preprocessor # line comment is seen. This | |
1614 | default definition may be overridden by the object or CPU specific | |
1615 | pseudo-ops. */ | |
1616 | ||
1617 | void | |
1618 | s_app_line (ignore) | |
ab9da554 | 1619 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1620 | { |
1621 | int l; | |
1622 | ||
1623 | /* The given number is that of the next line. */ | |
1624 | l = get_absolute_expression () - 1; | |
1625 | if (l < 0) | |
1626 | /* Some of the back ends can't deal with non-positive line numbers. | |
1627 | Besides, it's silly. */ | |
0e389e77 | 1628 | as_warn (_("line numbers must be positive; line number %d rejected"), |
041ff4dd | 1629 | l + 1); |
252b5132 RH |
1630 | else |
1631 | { | |
1632 | new_logical_line ((char *) NULL, l); | |
1633 | #ifdef LISTING | |
1634 | if (listing) | |
1635 | listing_source_line (l); | |
1636 | #endif | |
1637 | } | |
1638 | demand_empty_rest_of_line (); | |
1639 | } | |
1640 | ||
1641 | /* Handle the .end pseudo-op. Actually, the real work is done in | |
1642 | read_a_source_file. */ | |
1643 | ||
1644 | void | |
1645 | s_end (ignore) | |
ab9da554 | 1646 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1647 | { |
1648 | if (flag_mri) | |
1649 | { | |
1650 | /* The MRI assembler permits the start symbol to follow .end, | |
1651 | but we don't support that. */ | |
1652 | SKIP_WHITESPACE (); | |
041ff4dd | 1653 | if (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
1654 | && *input_line_pointer != '*' |
1655 | && *input_line_pointer != '!') | |
1656 | as_warn (_("start address not supported")); | |
1657 | } | |
1658 | } | |
1659 | ||
1660 | /* Handle the .err pseudo-op. */ | |
1661 | ||
1662 | void | |
1663 | s_err (ignore) | |
ab9da554 | 1664 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1665 | { |
1666 | as_bad (_(".err encountered")); | |
1667 | demand_empty_rest_of_line (); | |
1668 | } | |
1669 | ||
1670 | /* Handle the MRI fail pseudo-op. */ | |
1671 | ||
1672 | void | |
1673 | s_fail (ignore) | |
ab9da554 | 1674 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1675 | { |
1676 | offsetT temp; | |
1677 | char *stop = NULL; | |
1678 | char stopc; | |
1679 | ||
1680 | if (flag_mri) | |
1681 | stop = mri_comment_field (&stopc); | |
1682 | ||
1683 | temp = get_absolute_expression (); | |
1684 | if (temp >= 500) | |
1685 | as_warn (_(".fail %ld encountered"), (long) temp); | |
1686 | else | |
1687 | as_bad (_(".fail %ld encountered"), (long) temp); | |
1688 | ||
1689 | demand_empty_rest_of_line (); | |
1690 | ||
1691 | if (flag_mri) | |
1692 | mri_comment_end (stop, stopc); | |
1693 | } | |
1694 | ||
041ff4dd | 1695 | void |
252b5132 | 1696 | s_fill (ignore) |
ab9da554 | 1697 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1698 | { |
1699 | expressionS rep_exp; | |
1700 | long size = 1; | |
1701 | register long fill = 0; | |
1702 | char *p; | |
1703 | ||
1704 | #ifdef md_flush_pending_output | |
1705 | md_flush_pending_output (); | |
1706 | #endif | |
1707 | ||
1708 | get_known_segmented_expression (&rep_exp); | |
1709 | if (*input_line_pointer == ',') | |
1710 | { | |
1711 | input_line_pointer++; | |
1712 | size = get_absolute_expression (); | |
1713 | if (*input_line_pointer == ',') | |
1714 | { | |
1715 | input_line_pointer++; | |
1716 | fill = get_absolute_expression (); | |
1717 | } | |
1718 | } | |
1719 | ||
1720 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ | |
1721 | #define BSD_FILL_SIZE_CROCK_8 (8) | |
1722 | if (size > BSD_FILL_SIZE_CROCK_8) | |
1723 | { | |
0e389e77 | 1724 | as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8); |
252b5132 RH |
1725 | size = BSD_FILL_SIZE_CROCK_8; |
1726 | } | |
1727 | if (size < 0) | |
1728 | { | |
0e389e77 | 1729 | as_warn (_("size negative; .fill ignored")); |
252b5132 RH |
1730 | size = 0; |
1731 | } | |
1732 | else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0) | |
1733 | { | |
1734 | if (rep_exp.X_add_number < 0) | |
0e389e77 | 1735 | as_warn (_("repeat < 0; .fill ignored")); |
252b5132 RH |
1736 | size = 0; |
1737 | } | |
1738 | ||
1739 | if (size && !need_pass_2) | |
1740 | { | |
1741 | if (rep_exp.X_op == O_constant) | |
1742 | { | |
1743 | p = frag_var (rs_fill, (int) size, (int) size, | |
1744 | (relax_substateT) 0, (symbolS *) 0, | |
1745 | (offsetT) rep_exp.X_add_number, | |
1746 | (char *) 0); | |
1747 | } | |
1748 | else | |
1749 | { | |
1750 | /* We don't have a constant repeat count, so we can't use | |
1751 | rs_fill. We can get the same results out of rs_space, | |
1752 | but its argument is in bytes, so we must multiply the | |
1753 | repeat count by size. */ | |
1754 | ||
1755 | symbolS *rep_sym; | |
1756 | rep_sym = make_expr_symbol (&rep_exp); | |
1757 | if (size != 1) | |
1758 | { | |
1759 | expressionS size_exp; | |
1760 | size_exp.X_op = O_constant; | |
1761 | size_exp.X_add_number = size; | |
1762 | ||
1763 | rep_exp.X_op = O_multiply; | |
1764 | rep_exp.X_add_symbol = rep_sym; | |
1765 | rep_exp.X_op_symbol = make_expr_symbol (&size_exp); | |
1766 | rep_exp.X_add_number = 0; | |
1767 | rep_sym = make_expr_symbol (&rep_exp); | |
1768 | } | |
1769 | ||
1770 | p = frag_var (rs_space, (int) size, (int) size, | |
1771 | (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0); | |
1772 | } | |
f0e652b4 | 1773 | |
252b5132 | 1774 | memset (p, 0, (unsigned int) size); |
f0e652b4 | 1775 | |
252b5132 | 1776 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
2a1e2a6d | 1777 | flavoured AS. The following bizarre behaviour is to be |
041ff4dd NC |
1778 | compatible with above. I guess they tried to take up to 8 |
1779 | bytes from a 4-byte expression and they forgot to sign | |
2a1e2a6d | 1780 | extend. */ |
252b5132 RH |
1781 | #define BSD_FILL_SIZE_CROCK_4 (4) |
1782 | md_number_to_chars (p, (valueT) fill, | |
1783 | (size > BSD_FILL_SIZE_CROCK_4 | |
1784 | ? BSD_FILL_SIZE_CROCK_4 | |
1785 | : (int) size)); | |
1786 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
041ff4dd NC |
1787 | but emits no error message because it seems a legal thing to do. |
1788 | It is a degenerate case of .fill but could be emitted by a | |
1789 | compiler. */ | |
252b5132 RH |
1790 | } |
1791 | demand_empty_rest_of_line (); | |
1792 | } | |
1793 | ||
041ff4dd | 1794 | void |
252b5132 | 1795 | s_globl (ignore) |
ab9da554 | 1796 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1797 | { |
1798 | char *name; | |
1799 | int c; | |
1800 | symbolS *symbolP; | |
1801 | char *stop = NULL; | |
1802 | char stopc; | |
1803 | ||
1804 | if (flag_mri) | |
1805 | stop = mri_comment_field (&stopc); | |
1806 | ||
1807 | do | |
1808 | { | |
1809 | name = input_line_pointer; | |
1810 | c = get_symbol_end (); | |
1811 | symbolP = symbol_find_or_make (name); | |
58b5739a RH |
1812 | S_SET_EXTERNAL (symbolP); |
1813 | ||
252b5132 RH |
1814 | *input_line_pointer = c; |
1815 | SKIP_WHITESPACE (); | |
58b5739a | 1816 | c = *input_line_pointer; |
252b5132 RH |
1817 | if (c == ',') |
1818 | { | |
1819 | input_line_pointer++; | |
1820 | SKIP_WHITESPACE (); | |
0e389e77 | 1821 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1822 | c = '\n'; |
1823 | } | |
1824 | } | |
1825 | while (c == ','); | |
1826 | ||
1827 | demand_empty_rest_of_line (); | |
1828 | ||
1829 | if (flag_mri) | |
1830 | mri_comment_end (stop, stopc); | |
1831 | } | |
1832 | ||
1833 | /* Handle the MRI IRP and IRPC pseudo-ops. */ | |
1834 | ||
1835 | void | |
1836 | s_irp (irpc) | |
1837 | int irpc; | |
1838 | { | |
1839 | char *file; | |
1840 | unsigned int line; | |
1841 | sb s; | |
1842 | const char *err; | |
1843 | sb out; | |
1844 | ||
1845 | as_where (&file, &line); | |
1846 | ||
1847 | sb_new (&s); | |
041ff4dd | 1848 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1849 | sb_add_char (&s, *input_line_pointer++); |
1850 | ||
1851 | sb_new (&out); | |
1852 | ||
1853 | err = expand_irp (irpc, 0, &s, &out, get_line_sb, '\0'); | |
1854 | if (err != NULL) | |
1855 | as_bad_where (file, line, "%s", err); | |
1856 | ||
1857 | sb_kill (&s); | |
1858 | ||
9f10757c | 1859 | input_scrub_include_sb (&out, input_line_pointer, 1); |
252b5132 RH |
1860 | sb_kill (&out); |
1861 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1862 | } | |
1863 | ||
1864 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark | |
1865 | the section to only be linked once. However, this is not supported | |
1866 | by most object file formats. This takes an optional argument, | |
1867 | which is what to do about duplicates. */ | |
1868 | ||
1869 | void | |
1870 | s_linkonce (ignore) | |
ab9da554 | 1871 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
1872 | { |
1873 | enum linkonce_type type; | |
1874 | ||
1875 | SKIP_WHITESPACE (); | |
1876 | ||
1877 | type = LINKONCE_DISCARD; | |
1878 | ||
041ff4dd | 1879 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
1880 | { |
1881 | char *s; | |
1882 | char c; | |
1883 | ||
1884 | s = input_line_pointer; | |
1885 | c = get_symbol_end (); | |
1886 | if (strcasecmp (s, "discard") == 0) | |
1887 | type = LINKONCE_DISCARD; | |
1888 | else if (strcasecmp (s, "one_only") == 0) | |
1889 | type = LINKONCE_ONE_ONLY; | |
1890 | else if (strcasecmp (s, "same_size") == 0) | |
1891 | type = LINKONCE_SAME_SIZE; | |
1892 | else if (strcasecmp (s, "same_contents") == 0) | |
1893 | type = LINKONCE_SAME_CONTENTS; | |
1894 | else | |
1895 | as_warn (_("unrecognized .linkonce type `%s'"), s); | |
1896 | ||
1897 | *input_line_pointer = c; | |
1898 | } | |
1899 | ||
1900 | #ifdef obj_handle_link_once | |
1901 | obj_handle_link_once (type); | |
1902 | #else /* ! defined (obj_handle_link_once) */ | |
1903 | #ifdef BFD_ASSEMBLER | |
1904 | { | |
1905 | flagword flags; | |
1906 | ||
1907 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
1908 | as_warn (_(".linkonce is not supported for this object file format")); | |
1909 | ||
1910 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
1911 | flags |= SEC_LINK_ONCE; | |
1912 | switch (type) | |
1913 | { | |
1914 | default: | |
1915 | abort (); | |
1916 | case LINKONCE_DISCARD: | |
1917 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
1918 | break; | |
1919 | case LINKONCE_ONE_ONLY: | |
1920 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
1921 | break; | |
1922 | case LINKONCE_SAME_SIZE: | |
1923 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
1924 | break; | |
1925 | case LINKONCE_SAME_CONTENTS: | |
1926 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
1927 | break; | |
1928 | } | |
041ff4dd | 1929 | if (!bfd_set_section_flags (stdoutput, now_seg, flags)) |
252b5132 RH |
1930 | as_bad (_("bfd_set_section_flags: %s"), |
1931 | bfd_errmsg (bfd_get_error ())); | |
1932 | } | |
1933 | #else /* ! defined (BFD_ASSEMBLER) */ | |
1934 | as_warn (_(".linkonce is not supported for this object file format")); | |
1935 | #endif /* ! defined (BFD_ASSEMBLER) */ | |
1936 | #endif /* ! defined (obj_handle_link_once) */ | |
1937 | ||
1938 | demand_empty_rest_of_line (); | |
1939 | } | |
1940 | ||
041ff4dd | 1941 | static void |
252b5132 RH |
1942 | s_lcomm_internal (needs_align, bytes_p) |
1943 | /* 1 if this was a ".bss" directive, which may require a 3rd argument | |
041ff4dd | 1944 | (alignment); 0 if it was an ".lcomm" (2 args only). */ |
252b5132 RH |
1945 | int needs_align; |
1946 | /* 1 if the alignment value should be interpreted as the byte boundary, | |
041ff4dd | 1947 | rather than the power of 2. */ |
252b5132 RH |
1948 | int bytes_p; |
1949 | { | |
1950 | register char *name; | |
1951 | register char c; | |
1952 | register char *p; | |
1953 | register int temp; | |
1954 | register symbolS *symbolP; | |
1955 | segT current_seg = now_seg; | |
1956 | subsegT current_subseg = now_subseg; | |
1957 | const int max_alignment = 15; | |
1958 | int align = 0; | |
1959 | segT bss_seg = bss_section; | |
1960 | ||
1961 | name = input_line_pointer; | |
1962 | c = get_symbol_end (); | |
1963 | p = input_line_pointer; | |
1964 | *p = c; | |
0e389e77 AM |
1965 | |
1966 | if (name == p) | |
1967 | { | |
1968 | as_bad (_("expected symbol name")); | |
1969 | discard_rest_of_line (); | |
1970 | return; | |
1971 | } | |
1972 | ||
252b5132 RH |
1973 | SKIP_WHITESPACE (); |
1974 | ||
1975 | /* Accept an optional comma after the name. The comma used to be | |
1976 | required, but Irix 5 cc does not generate it. */ | |
1977 | if (*input_line_pointer == ',') | |
1978 | { | |
1979 | ++input_line_pointer; | |
1980 | SKIP_WHITESPACE (); | |
1981 | } | |
1982 | ||
0e389e77 | 1983 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 | 1984 | { |
0e389e77 | 1985 | as_bad (_("missing size expression")); |
252b5132 RH |
1986 | return; |
1987 | } | |
1988 | ||
1989 | if ((temp = get_absolute_expression ()) < 0) | |
1990 | { | |
0e389e77 | 1991 | as_warn (_("BSS length (%d) < 0 ignored"), temp); |
252b5132 RH |
1992 | ignore_rest_of_line (); |
1993 | return; | |
1994 | } | |
1995 | ||
1996 | #if defined (TC_MIPS) || defined (TC_ALPHA) | |
1997 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour | |
1998 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
1999 | { | |
2000 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ | |
23fe39df | 2001 | if ((unsigned) temp <= bfd_get_gp_size (stdoutput)) |
252b5132 RH |
2002 | { |
2003 | bss_seg = subseg_new (".sbss", 1); | |
2004 | seg_info (bss_seg)->bss = 1; | |
2005 | #ifdef BFD_ASSEMBLER | |
041ff4dd | 2006 | if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) |
252b5132 RH |
2007 | as_warn (_("error setting flags for \".sbss\": %s"), |
2008 | bfd_errmsg (bfd_get_error ())); | |
2009 | #endif | |
2010 | } | |
2011 | } | |
2012 | #endif | |
8684e216 | 2013 | |
041ff4dd NC |
2014 | if (!needs_align) |
2015 | { | |
2016 | TC_IMPLICIT_LCOMM_ALIGNMENT (temp, align); | |
252b5132 | 2017 | |
041ff4dd NC |
2018 | /* Still zero unless TC_IMPLICIT_LCOMM_ALIGNMENT set it. */ |
2019 | if (align) | |
2020 | record_alignment (bss_seg, align); | |
2021 | } | |
252b5132 RH |
2022 | |
2023 | if (needs_align) | |
2024 | { | |
2025 | align = 0; | |
2026 | SKIP_WHITESPACE (); | |
f0e652b4 | 2027 | |
252b5132 RH |
2028 | if (*input_line_pointer != ',') |
2029 | { | |
0e389e77 | 2030 | as_bad (_("expected comma after size")); |
252b5132 RH |
2031 | ignore_rest_of_line (); |
2032 | return; | |
2033 | } | |
f0e652b4 | 2034 | |
252b5132 RH |
2035 | input_line_pointer++; |
2036 | SKIP_WHITESPACE (); | |
f0e652b4 | 2037 | |
0e389e77 | 2038 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 | 2039 | { |
0e389e77 | 2040 | as_bad (_("missing alignment")); |
252b5132 RH |
2041 | return; |
2042 | } | |
f0e652b4 | 2043 | |
252b5132 | 2044 | align = get_absolute_expression (); |
f0e652b4 | 2045 | |
252b5132 RH |
2046 | if (bytes_p) |
2047 | { | |
2048 | /* Convert to a power of 2. */ | |
2049 | if (align != 0) | |
2050 | { | |
2051 | unsigned int i; | |
2052 | ||
2053 | for (i = 0; (align & 1) == 0; align >>= 1, ++i) | |
2054 | ; | |
2055 | if (align != 1) | |
0e389e77 | 2056 | as_bad (_("alignment not a power of 2")); |
252b5132 RH |
2057 | align = i; |
2058 | } | |
2059 | } | |
f0e652b4 | 2060 | |
252b5132 RH |
2061 | if (align > max_alignment) |
2062 | { | |
2063 | align = max_alignment; | |
0e389e77 | 2064 | as_warn (_("alignment too large; %d assumed"), align); |
252b5132 RH |
2065 | } |
2066 | else if (align < 0) | |
2067 | { | |
2068 | align = 0; | |
0e389e77 | 2069 | as_warn (_("alignment negative; 0 assumed")); |
252b5132 | 2070 | } |
f0e652b4 | 2071 | |
252b5132 | 2072 | record_alignment (bss_seg, align); |
041ff4dd | 2073 | } |
252b5132 RH |
2074 | else |
2075 | { | |
2076 | /* Assume some objects may require alignment on some systems. */ | |
2077 | #if defined (TC_ALPHA) && ! defined (VMS) | |
2078 | if (temp > 1) | |
2079 | { | |
2080 | align = ffs (temp) - 1; | |
2081 | if (temp % (1 << align)) | |
2082 | abort (); | |
2083 | } | |
2084 | #endif | |
2085 | } | |
2086 | ||
2087 | *p = 0; | |
2088 | symbolP = symbol_find_or_make (name); | |
2089 | *p = c; | |
2090 | ||
2091 | if ( | |
4c63da97 AM |
2092 | #if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) \ |
2093 | || defined (OBJ_BOUT) || defined (OBJ_MAYBE_BOUT)) | |
2094 | #ifdef BFD_ASSEMBLER | |
2095 | (OUTPUT_FLAVOR != bfd_target_aout_flavour | |
2096 | || (S_GET_OTHER (symbolP) == 0 && S_GET_DESC (symbolP) == 0)) && | |
2097 | #else | |
2098 | (S_GET_OTHER (symbolP) == 0 && S_GET_DESC (symbolP) == 0) && | |
2099 | #endif | |
2100 | #endif | |
2101 | (S_GET_SEGMENT (symbolP) == bss_seg | |
2102 | || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0))) | |
252b5132 RH |
2103 | { |
2104 | char *pfrag; | |
2105 | ||
2106 | subseg_set (bss_seg, 1); | |
2107 | ||
2108 | if (align) | |
2109 | frag_align (align, 0, 0); | |
f0e652b4 | 2110 | |
ef99799a | 2111 | /* Detach from old frag. */ |
252b5132 | 2112 | if (S_GET_SEGMENT (symbolP) == bss_seg) |
2b47531b | 2113 | symbol_get_frag (symbolP)->fr_symbol = NULL; |
252b5132 | 2114 | |
2b47531b | 2115 | symbol_set_frag (symbolP, frag_now); |
041ff4dd | 2116 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, |
252b5132 RH |
2117 | (offsetT) temp, (char *) 0); |
2118 | *pfrag = 0; | |
2119 | ||
2120 | S_SET_SEGMENT (symbolP, bss_seg); | |
2121 | ||
2122 | #ifdef OBJ_COFF | |
2123 | /* The symbol may already have been created with a preceding | |
2124 | ".globl" directive -- be careful not to step on storage class | |
041ff4dd | 2125 | in that case. Otherwise, set it to static. */ |
252b5132 RH |
2126 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) |
2127 | { | |
2128 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
2129 | } | |
2130 | #endif /* OBJ_COFF */ | |
2131 | ||
2132 | #ifdef S_SET_SIZE | |
2133 | S_SET_SIZE (symbolP, temp); | |
2134 | #endif | |
2135 | } | |
2136 | else | |
0e389e77 | 2137 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP)); |
252b5132 RH |
2138 | |
2139 | subseg_set (current_seg, current_subseg); | |
2140 | ||
2141 | demand_empty_rest_of_line (); | |
041ff4dd | 2142 | } |
252b5132 RH |
2143 | |
2144 | void | |
2145 | s_lcomm (needs_align) | |
2146 | int needs_align; | |
2147 | { | |
2148 | s_lcomm_internal (needs_align, 0); | |
2149 | } | |
2150 | ||
041ff4dd NC |
2151 | void |
2152 | s_lcomm_bytes (needs_align) | |
252b5132 RH |
2153 | int needs_align; |
2154 | { | |
2155 | s_lcomm_internal (needs_align, 1); | |
2156 | } | |
2157 | ||
041ff4dd | 2158 | void |
252b5132 | 2159 | s_lsym (ignore) |
ab9da554 | 2160 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2161 | { |
2162 | register char *name; | |
2163 | register char c; | |
2164 | register char *p; | |
2165 | expressionS exp; | |
2166 | register symbolS *symbolP; | |
2167 | ||
041ff4dd | 2168 | /* We permit ANY defined expression: BSD4.2 demands constants. */ |
252b5132 RH |
2169 | name = input_line_pointer; |
2170 | c = get_symbol_end (); | |
2171 | p = input_line_pointer; | |
2172 | *p = c; | |
0e389e77 AM |
2173 | |
2174 | if (name == p) | |
2175 | { | |
2176 | as_bad (_("expected symbol name")); | |
2177 | discard_rest_of_line (); | |
2178 | return; | |
2179 | } | |
2180 | ||
252b5132 | 2181 | SKIP_WHITESPACE (); |
f0e652b4 | 2182 | |
252b5132 RH |
2183 | if (*input_line_pointer != ',') |
2184 | { | |
2185 | *p = 0; | |
0e389e77 | 2186 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2187 | *p = c; |
2188 | ignore_rest_of_line (); | |
2189 | return; | |
2190 | } | |
f0e652b4 | 2191 | |
252b5132 RH |
2192 | input_line_pointer++; |
2193 | expression (&exp); | |
f0e652b4 | 2194 | |
252b5132 RH |
2195 | if (exp.X_op != O_constant |
2196 | && exp.X_op != O_register) | |
2197 | { | |
2198 | as_bad (_("bad expression")); | |
2199 | ignore_rest_of_line (); | |
2200 | return; | |
2201 | } | |
f0e652b4 | 2202 | |
252b5132 RH |
2203 | *p = 0; |
2204 | symbolP = symbol_find_or_make (name); | |
2205 | ||
2206 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && | |
2207 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
2208 | those fields, and I can't see when they'd ever be tripped. I | |
2209 | don't think I understand why they were here so I may have | |
2210 | introduced a bug. As recently as 1.37 didn't have this test | |
041ff4dd | 2211 | anyway. xoxorich. */ |
252b5132 RH |
2212 | |
2213 | if (S_GET_SEGMENT (symbolP) == undefined_section | |
2214 | && S_GET_VALUE (symbolP) == 0) | |
2215 | { | |
2216 | /* The name might be an undefined .global symbol; be sure to | |
041ff4dd | 2217 | keep the "external" bit. */ |
252b5132 RH |
2218 | S_SET_SEGMENT (symbolP, |
2219 | (exp.X_op == O_constant | |
2220 | ? absolute_section | |
2221 | : reg_section)); | |
2222 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2223 | } | |
2224 | else | |
2225 | { | |
0e389e77 | 2226 | as_bad (_("symbol `%s' is already defined"), name); |
252b5132 | 2227 | } |
f0e652b4 | 2228 | |
252b5132 RH |
2229 | *p = c; |
2230 | demand_empty_rest_of_line (); | |
041ff4dd | 2231 | } |
252b5132 RH |
2232 | |
2233 | /* Read a line into an sb. */ | |
2234 | ||
2235 | static int | |
2236 | get_line_sb (line) | |
2237 | sb *line; | |
2238 | { | |
2239 | char quote1, quote2, inquote; | |
2240 | ||
2241 | if (input_line_pointer[-1] == '\n') | |
2242 | bump_line_counters (); | |
2243 | ||
2244 | if (input_line_pointer >= buffer_limit) | |
2245 | { | |
2246 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2247 | if (buffer_limit == 0) | |
2248 | return 0; | |
2249 | } | |
2250 | ||
2251 | /* If app.c sets any other characters to LEX_IS_STRINGQUOTE, this | |
2252 | code needs to be changed. */ | |
041ff4dd | 2253 | if (!flag_m68k_mri) |
252b5132 RH |
2254 | quote1 = '"'; |
2255 | else | |
2256 | quote1 = '\0'; | |
2257 | ||
2258 | quote2 = '\0'; | |
2259 | if (flag_m68k_mri) | |
2260 | quote2 = '\''; | |
2261 | #ifdef LEX_IS_STRINGQUOTE | |
2262 | quote2 = '\''; | |
2263 | #endif | |
2264 | ||
2265 | inquote = '\0'; | |
f0e652b4 | 2266 | |
041ff4dd | 2267 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
2268 | || (inquote != '\0' && *input_line_pointer != '\n')) |
2269 | { | |
2270 | if (inquote == *input_line_pointer) | |
2271 | inquote = '\0'; | |
2272 | else if (inquote == '\0') | |
2273 | { | |
2274 | if (*input_line_pointer == quote1) | |
2275 | inquote = quote1; | |
2276 | else if (*input_line_pointer == quote2) | |
2277 | inquote = quote2; | |
2278 | } | |
f0e652b4 | 2279 | |
252b5132 RH |
2280 | sb_add_char (line, *input_line_pointer++); |
2281 | } | |
f0e652b4 | 2282 | |
252b5132 RH |
2283 | while (input_line_pointer < buffer_limit |
2284 | && is_end_of_line[(unsigned char) *input_line_pointer]) | |
2285 | { | |
2286 | if (input_line_pointer[-1] == '\n') | |
2287 | bump_line_counters (); | |
2288 | ++input_line_pointer; | |
2289 | } | |
f0e652b4 | 2290 | |
252b5132 RH |
2291 | return 1; |
2292 | } | |
2293 | ||
2294 | /* Define a macro. This is an interface to macro.c, which is shared | |
2295 | between gas and gasp. */ | |
2296 | ||
2297 | void | |
2298 | s_macro (ignore) | |
ab9da554 | 2299 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2300 | { |
2301 | char *file; | |
2302 | unsigned int line; | |
2303 | sb s; | |
2304 | sb label; | |
2305 | const char *err; | |
2306 | const char *name; | |
2307 | ||
2308 | as_where (&file, &line); | |
2309 | ||
2310 | sb_new (&s); | |
041ff4dd | 2311 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
2312 | sb_add_char (&s, *input_line_pointer++); |
2313 | ||
2314 | sb_new (&label); | |
2315 | if (line_label != NULL) | |
2316 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2317 | ||
2318 | err = define_macro (0, &s, &label, get_line_sb, &name); | |
2319 | if (err != NULL) | |
2320 | as_bad_where (file, line, "%s", err); | |
2321 | else | |
2322 | { | |
2323 | if (line_label != NULL) | |
2324 | { | |
2325 | S_SET_SEGMENT (line_label, undefined_section); | |
2326 | S_SET_VALUE (line_label, 0); | |
2b47531b | 2327 | symbol_set_frag (line_label, &zero_address_frag); |
252b5132 RH |
2328 | } |
2329 | ||
abd63a32 | 2330 | if (((NO_PSEUDO_DOT || flag_m68k_mri) |
252b5132 | 2331 | && hash_find (po_hash, name) != NULL) |
041ff4dd | 2332 | || (!flag_m68k_mri |
252b5132 RH |
2333 | && *name == '.' |
2334 | && hash_find (po_hash, name + 1) != NULL)) | |
2335 | as_warn (_("attempt to redefine pseudo-op `%s' ignored"), | |
2336 | name); | |
2337 | } | |
2338 | ||
2339 | sb_kill (&s); | |
2340 | } | |
2341 | ||
2342 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2343 | expansion. */ | |
2344 | ||
2345 | void | |
2346 | s_mexit (ignore) | |
ab9da554 | 2347 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2348 | { |
2349 | cond_exit_macro (macro_nest); | |
2350 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2351 | } | |
2352 | ||
2353 | /* Switch in and out of MRI mode. */ | |
2354 | ||
2355 | void | |
2356 | s_mri (ignore) | |
ab9da554 | 2357 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2358 | { |
2359 | int on, old_flag; | |
2360 | ||
2361 | on = get_absolute_expression (); | |
2362 | old_flag = flag_mri; | |
2363 | if (on != 0) | |
2364 | { | |
2365 | flag_mri = 1; | |
2366 | #ifdef TC_M68K | |
2367 | flag_m68k_mri = 1; | |
2368 | #endif | |
2369 | macro_mri_mode (1); | |
2370 | } | |
2371 | else | |
2372 | { | |
2373 | flag_mri = 0; | |
abd63a32 | 2374 | #ifdef TC_M68K |
252b5132 | 2375 | flag_m68k_mri = 0; |
abd63a32 | 2376 | #endif |
252b5132 RH |
2377 | macro_mri_mode (0); |
2378 | } | |
2379 | ||
2380 | /* Operator precedence changes in m68k MRI mode, so we need to | |
2381 | update the operator rankings. */ | |
2382 | expr_set_precedence (); | |
2383 | ||
2384 | #ifdef MRI_MODE_CHANGE | |
2385 | if (on != old_flag) | |
2386 | MRI_MODE_CHANGE (on); | |
2387 | #endif | |
2388 | ||
2389 | demand_empty_rest_of_line (); | |
2390 | } | |
2391 | ||
2392 | /* Handle changing the location counter. */ | |
2393 | ||
2394 | static void | |
2395 | do_org (segment, exp, fill) | |
2396 | segT segment; | |
2397 | expressionS *exp; | |
2398 | int fill; | |
2399 | { | |
2400 | if (segment != now_seg && segment != absolute_section) | |
0e389e77 | 2401 | as_bad (_("invalid segment \"%s\""), segment_name (segment)); |
252b5132 RH |
2402 | |
2403 | if (now_seg == absolute_section) | |
2404 | { | |
2405 | if (fill != 0) | |
2406 | as_warn (_("ignoring fill value in absolute section")); | |
2407 | if (exp->X_op != O_constant) | |
2408 | { | |
2409 | as_bad (_("only constant offsets supported in absolute section")); | |
2410 | exp->X_add_number = 0; | |
2411 | } | |
2412 | abs_section_offset = exp->X_add_number; | |
2413 | } | |
2414 | else | |
2415 | { | |
2416 | char *p; | |
2289f85d AM |
2417 | symbolS *sym = exp->X_add_symbol; |
2418 | offsetT off = exp->X_add_number * OCTETS_PER_BYTE; | |
252b5132 | 2419 | |
2289f85d AM |
2420 | if (exp->X_op != O_constant && exp->X_op != O_symbol) |
2421 | { | |
2422 | /* Handle complex expressions. */ | |
2423 | sym = make_expr_symbol (exp); | |
2424 | off = 0; | |
2425 | } | |
2426 | ||
2427 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0); | |
252b5132 RH |
2428 | *p = fill; |
2429 | } | |
2430 | } | |
2431 | ||
041ff4dd | 2432 | void |
252b5132 | 2433 | s_org (ignore) |
ab9da554 | 2434 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2435 | { |
2436 | register segT segment; | |
2437 | expressionS exp; | |
2438 | register long temp_fill; | |
2439 | ||
2440 | #ifdef md_flush_pending_output | |
2441 | md_flush_pending_output (); | |
2442 | #endif | |
2443 | ||
2444 | /* The m68k MRI assembler has a different meaning for .org. It | |
2445 | means to create an absolute section at a given address. We can't | |
2446 | support that--use a linker script instead. */ | |
2447 | if (flag_m68k_mri) | |
2448 | { | |
2449 | as_bad (_("MRI style ORG pseudo-op not supported")); | |
2450 | ignore_rest_of_line (); | |
2451 | return; | |
2452 | } | |
2453 | ||
2454 | /* Don't believe the documentation of BSD 4.2 AS. There is no such | |
2455 | thing as a sub-segment-relative origin. Any absolute origin is | |
2456 | given a warning, then assumed to be segment-relative. Any | |
2457 | segmented origin expression ("foo+42") had better be in the right | |
2458 | segment or the .org is ignored. | |
2459 | ||
2460 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2461 | we never know sub-segment sizes when we are reading code. BSD | |
2462 | will crash trying to emit negative numbers of filler bytes in | |
2463 | certain .orgs. We don't crash, but see as-write for that code. | |
2464 | ||
2465 | Don't make frag if need_pass_2==1. */ | |
2466 | segment = get_known_segmented_expression (&exp); | |
2467 | if (*input_line_pointer == ',') | |
2468 | { | |
2469 | input_line_pointer++; | |
2470 | temp_fill = get_absolute_expression (); | |
2471 | } | |
2472 | else | |
2473 | temp_fill = 0; | |
2474 | ||
2475 | if (!need_pass_2) | |
2476 | do_org (segment, &exp, temp_fill); | |
2477 | ||
2478 | demand_empty_rest_of_line (); | |
041ff4dd | 2479 | } |
252b5132 RH |
2480 | |
2481 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be | |
2482 | called by the obj-format routine which handles section changing | |
2483 | when in MRI mode. It will create a new section, and return it. It | |
2484 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), | |
2485 | 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the | |
2486 | flags will be set in the section. */ | |
2487 | ||
2488 | void | |
2489 | s_mri_sect (type) | |
ab9da554 | 2490 | char *type ATTRIBUTE_UNUSED; |
252b5132 RH |
2491 | { |
2492 | #ifdef TC_M68K | |
2493 | ||
2494 | char *name; | |
2495 | char c; | |
2496 | segT seg; | |
2497 | ||
2498 | SKIP_WHITESPACE (); | |
041ff4dd | 2499 | |
252b5132 | 2500 | name = input_line_pointer; |
3882b010 | 2501 | if (!ISDIGIT (*name)) |
252b5132 RH |
2502 | c = get_symbol_end (); |
2503 | else | |
2504 | { | |
2505 | do | |
2506 | { | |
2507 | ++input_line_pointer; | |
2508 | } | |
3882b010 | 2509 | while (ISDIGIT (*input_line_pointer)); |
f0e652b4 | 2510 | |
252b5132 RH |
2511 | c = *input_line_pointer; |
2512 | *input_line_pointer = '\0'; | |
2513 | } | |
2514 | ||
2515 | name = xstrdup (name); | |
2516 | ||
2517 | *input_line_pointer = c; | |
2518 | ||
2519 | seg = subseg_new (name, 0); | |
2520 | ||
2521 | if (*input_line_pointer == ',') | |
2522 | { | |
2523 | int align; | |
2524 | ||
2525 | ++input_line_pointer; | |
2526 | align = get_absolute_expression (); | |
2527 | record_alignment (seg, align); | |
2528 | } | |
2529 | ||
2530 | *type = 'C'; | |
2531 | if (*input_line_pointer == ',') | |
2532 | { | |
2533 | c = *++input_line_pointer; | |
3882b010 | 2534 | c = TOUPPER (c); |
252b5132 RH |
2535 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') |
2536 | *type = c; | |
2537 | else | |
2538 | as_bad (_("unrecognized section type")); | |
2539 | ++input_line_pointer; | |
2540 | ||
2541 | #ifdef BFD_ASSEMBLER | |
2542 | { | |
2543 | flagword flags; | |
2544 | ||
2545 | flags = SEC_NO_FLAGS; | |
2546 | if (*type == 'C') | |
2547 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; | |
2548 | else if (*type == 'D' || *type == 'M') | |
2549 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
2550 | else if (*type == 'R') | |
2551 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; | |
2552 | if (flags != SEC_NO_FLAGS) | |
2553 | { | |
041ff4dd | 2554 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
252b5132 RH |
2555 | as_warn (_("error setting flags for \"%s\": %s"), |
2556 | bfd_section_name (stdoutput, seg), | |
2557 | bfd_errmsg (bfd_get_error ())); | |
2558 | } | |
2559 | } | |
2560 | #endif | |
2561 | } | |
2562 | ||
2563 | /* Ignore the HP type. */ | |
2564 | if (*input_line_pointer == ',') | |
2565 | input_line_pointer += 2; | |
2566 | ||
2567 | demand_empty_rest_of_line (); | |
2568 | ||
2569 | #else /* ! TC_M68K */ | |
2570 | #ifdef TC_I960 | |
2571 | ||
2572 | char *name; | |
2573 | char c; | |
2574 | segT seg; | |
2575 | ||
2576 | SKIP_WHITESPACE (); | |
2577 | ||
2578 | name = input_line_pointer; | |
2579 | c = get_symbol_end (); | |
2580 | ||
2581 | name = xstrdup (name); | |
2582 | ||
2583 | *input_line_pointer = c; | |
2584 | ||
2585 | seg = subseg_new (name, 0); | |
2586 | ||
2587 | if (*input_line_pointer != ',') | |
2588 | *type = 'C'; | |
2589 | else | |
2590 | { | |
2591 | char *sectype; | |
2592 | ||
2593 | ++input_line_pointer; | |
2594 | SKIP_WHITESPACE (); | |
2595 | sectype = input_line_pointer; | |
2596 | c = get_symbol_end (); | |
2597 | if (*sectype == '\0') | |
2598 | *type = 'C'; | |
2599 | else if (strcasecmp (sectype, "text") == 0) | |
2600 | *type = 'C'; | |
2601 | else if (strcasecmp (sectype, "data") == 0) | |
2602 | *type = 'D'; | |
2603 | else if (strcasecmp (sectype, "romdata") == 0) | |
2604 | *type = 'R'; | |
2605 | else | |
2606 | as_warn (_("unrecognized section type `%s'"), sectype); | |
2607 | *input_line_pointer = c; | |
2608 | } | |
2609 | ||
2610 | if (*input_line_pointer == ',') | |
2611 | { | |
2612 | char *seccmd; | |
2613 | ||
2614 | ++input_line_pointer; | |
2615 | SKIP_WHITESPACE (); | |
2616 | seccmd = input_line_pointer; | |
2617 | c = get_symbol_end (); | |
2618 | if (strcasecmp (seccmd, "absolute") == 0) | |
2619 | { | |
2620 | as_bad (_("absolute sections are not supported")); | |
2621 | *input_line_pointer = c; | |
2622 | ignore_rest_of_line (); | |
2623 | return; | |
2624 | } | |
2625 | else if (strcasecmp (seccmd, "align") == 0) | |
2626 | { | |
2627 | int align; | |
2628 | ||
2629 | *input_line_pointer = c; | |
2630 | align = get_absolute_expression (); | |
2631 | record_alignment (seg, align); | |
2632 | } | |
2633 | else | |
2634 | { | |
2635 | as_warn (_("unrecognized section command `%s'"), seccmd); | |
2636 | *input_line_pointer = c; | |
2637 | } | |
2638 | } | |
2639 | ||
041ff4dd | 2640 | demand_empty_rest_of_line (); |
252b5132 RH |
2641 | |
2642 | #else /* ! TC_I960 */ | |
2643 | /* The MRI assembler seems to use different forms of .sect for | |
2644 | different targets. */ | |
2645 | as_bad ("MRI mode not supported for this target"); | |
2646 | ignore_rest_of_line (); | |
2647 | #endif /* ! TC_I960 */ | |
2648 | #endif /* ! TC_M68K */ | |
2649 | } | |
2650 | ||
2651 | /* Handle the .print pseudo-op. */ | |
2652 | ||
2653 | void | |
2654 | s_print (ignore) | |
ab9da554 | 2655 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2656 | { |
2657 | char *s; | |
2658 | int len; | |
2659 | ||
2660 | s = demand_copy_C_string (&len); | |
2661 | printf ("%s\n", s); | |
2662 | demand_empty_rest_of_line (); | |
2663 | } | |
2664 | ||
2665 | /* Handle the .purgem pseudo-op. */ | |
2666 | ||
2667 | void | |
2668 | s_purgem (ignore) | |
ab9da554 | 2669 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2670 | { |
2671 | if (is_it_end_of_statement ()) | |
2672 | { | |
2673 | demand_empty_rest_of_line (); | |
2674 | return; | |
2675 | } | |
2676 | ||
2677 | do | |
2678 | { | |
2679 | char *name; | |
2680 | char c; | |
2681 | ||
2682 | SKIP_WHITESPACE (); | |
2683 | name = input_line_pointer; | |
2684 | c = get_symbol_end (); | |
2685 | delete_macro (name); | |
2686 | *input_line_pointer = c; | |
2687 | SKIP_WHITESPACE (); | |
2688 | } | |
2689 | while (*input_line_pointer++ == ','); | |
2690 | ||
2691 | --input_line_pointer; | |
2692 | demand_empty_rest_of_line (); | |
2693 | } | |
2694 | ||
2695 | /* Handle the .rept pseudo-op. */ | |
2696 | ||
7f28ab9d NC |
2697 | void |
2698 | s_bad_endr (ignore) | |
2699 | int ignore ATTRIBUTE_UNUSED; | |
2700 | { | |
2701 | as_warn (_(".endr encountered without preceeding .rept, .irc, or .irp")); | |
2702 | demand_empty_rest_of_line (); | |
2703 | } | |
2704 | ||
2705 | /* Handle the .rept pseudo-op. */ | |
2706 | ||
252b5132 RH |
2707 | void |
2708 | s_rept (ignore) | |
ab9da554 | 2709 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
2710 | { |
2711 | int count; | |
252b5132 RH |
2712 | |
2713 | count = get_absolute_expression (); | |
2714 | ||
041ff4dd | 2715 | do_repeat (count, "REPT", "ENDR"); |
6dc19fc4 TW |
2716 | } |
2717 | ||
2718 | /* This function provides a generic repeat block implementation. It allows | |
041ff4dd | 2719 | different directives to be used as the start/end keys. */ |
6dc19fc4 TW |
2720 | |
2721 | void | |
2722 | do_repeat (count, start, end) | |
041ff4dd NC |
2723 | int count; |
2724 | const char *start; | |
2725 | const char *end; | |
6dc19fc4 TW |
2726 | { |
2727 | sb one; | |
2728 | sb many; | |
2729 | ||
252b5132 | 2730 | sb_new (&one); |
041ff4dd | 2731 | if (!buffer_and_nest (start, end, &one, get_line_sb)) |
252b5132 | 2732 | { |
6dc19fc4 | 2733 | as_bad (_("%s without %s"), start, end); |
252b5132 RH |
2734 | return; |
2735 | } | |
2736 | ||
2737 | sb_new (&many); | |
2738 | while (count-- > 0) | |
2739 | sb_add_sb (&many, &one); | |
2740 | ||
2741 | sb_kill (&one); | |
2742 | ||
9f10757c | 2743 | input_scrub_include_sb (&many, input_line_pointer, 1); |
252b5132 RH |
2744 | sb_kill (&many); |
2745 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2746 | } | |
2747 | ||
6dc19fc4 TW |
2748 | /* Skip to end of current repeat loop; EXTRA indicates how many additional |
2749 | input buffers to skip. Assumes that conditionals preceding the loop end | |
041ff4dd | 2750 | are properly nested. |
6dc19fc4 TW |
2751 | |
2752 | This function makes it easier to implement a premature "break" out of the | |
2753 | loop. The EXTRA arg accounts for other buffers we might have inserted, | |
041ff4dd | 2754 | such as line substitutions. */ |
6dc19fc4 TW |
2755 | |
2756 | void | |
2757 | end_repeat (extra) | |
041ff4dd | 2758 | int extra; |
6dc19fc4 TW |
2759 | { |
2760 | cond_exit_macro (macro_nest); | |
2761 | while (extra-- >= 0) | |
2762 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2763 | } | |
2764 | ||
252b5132 RH |
2765 | /* Handle the .equ, .equiv and .set directives. If EQUIV is 1, then |
2766 | this is .equiv, and it is an error if the symbol is already | |
2767 | defined. */ | |
2768 | ||
041ff4dd | 2769 | void |
252b5132 RH |
2770 | s_set (equiv) |
2771 | int equiv; | |
2772 | { | |
2773 | register char *name; | |
2774 | register char delim; | |
2775 | register char *end_name; | |
2776 | register symbolS *symbolP; | |
2777 | ||
041ff4dd NC |
2778 | /* Especial apologies for the random logic: |
2779 | this just grew, and could be parsed much more simply! | |
2780 | Dean in haste. */ | |
252b5132 RH |
2781 | name = input_line_pointer; |
2782 | delim = get_symbol_end (); | |
2783 | end_name = input_line_pointer; | |
0e389e77 | 2784 | *end_name = delim; |
409d19c4 | 2785 | |
0e389e77 | 2786 | if (name == end_name) |
409d19c4 AM |
2787 | { |
2788 | as_bad (_("expected symbol name")); | |
409d19c4 AM |
2789 | discard_rest_of_line (); |
2790 | return; | |
2791 | } | |
2792 | ||
252b5132 RH |
2793 | SKIP_WHITESPACE (); |
2794 | ||
2795 | if (*input_line_pointer != ',') | |
2796 | { | |
2797 | *end_name = 0; | |
0e389e77 | 2798 | as_bad (_("expected comma after \"%s\""), name); |
252b5132 RH |
2799 | *end_name = delim; |
2800 | ignore_rest_of_line (); | |
2801 | return; | |
2802 | } | |
2803 | ||
2804 | input_line_pointer++; | |
2805 | *end_name = 0; | |
2806 | ||
2807 | if (name[0] == '.' && name[1] == '\0') | |
2808 | { | |
041ff4dd | 2809 | /* Turn '. = mumble' into a .org mumble. */ |
252b5132 RH |
2810 | register segT segment; |
2811 | expressionS exp; | |
2812 | ||
2813 | segment = get_known_segmented_expression (&exp); | |
2814 | ||
2815 | if (!need_pass_2) | |
2816 | do_org (segment, &exp, 0); | |
2817 | ||
2818 | *end_name = delim; | |
2819 | return; | |
2820 | } | |
2821 | ||
2822 | if ((symbolP = symbol_find (name)) == NULL | |
2823 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2824 | { | |
2825 | #ifndef NO_LISTING | |
2826 | /* When doing symbol listings, play games with dummy fragments living | |
2827 | outside the normal fragment chain to record the file and line info | |
2828 | for this symbol. */ | |
2829 | if (listing & LISTING_SYMBOLS) | |
2830 | { | |
2831 | extern struct list_info_struct *listing_tail; | |
041ff4dd NC |
2832 | fragS *dummy_frag = (fragS *) xmalloc (sizeof (fragS)); |
2833 | memset (dummy_frag, 0, sizeof (fragS)); | |
252b5132 RH |
2834 | dummy_frag->fr_type = rs_fill; |
2835 | dummy_frag->line = listing_tail; | |
2836 | symbolP = symbol_new (name, undefined_section, 0, dummy_frag); | |
2837 | dummy_frag->fr_symbol = symbolP; | |
2838 | } | |
2839 | else | |
2840 | #endif | |
041ff4dd NC |
2841 | symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag); |
2842 | ||
252b5132 | 2843 | #ifdef OBJ_COFF |
041ff4dd | 2844 | /* "set" symbols are local unless otherwise specified. */ |
252b5132 RH |
2845 | SF_SET_LOCAL (symbolP); |
2846 | #endif /* OBJ_COFF */ | |
041ff4dd | 2847 | } |
252b5132 RH |
2848 | |
2849 | symbol_table_insert (symbolP); | |
2850 | ||
2851 | *end_name = delim; | |
2852 | ||
2853 | if (equiv | |
2854 | && S_IS_DEFINED (symbolP) | |
2855 | && S_GET_SEGMENT (symbolP) != reg_section) | |
0e389e77 | 2856 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP)); |
252b5132 RH |
2857 | |
2858 | pseudo_set (symbolP); | |
2859 | demand_empty_rest_of_line (); | |
041ff4dd | 2860 | } |
252b5132 | 2861 | |
041ff4dd | 2862 | void |
252b5132 RH |
2863 | s_space (mult) |
2864 | int mult; | |
2865 | { | |
2866 | expressionS exp; | |
2867 | expressionS val; | |
2868 | char *p = 0; | |
2869 | char *stop = NULL; | |
2870 | char stopc; | |
2871 | int bytes; | |
2872 | ||
2873 | #ifdef md_flush_pending_output | |
2874 | md_flush_pending_output (); | |
2875 | #endif | |
2876 | ||
2877 | if (flag_mri) | |
2878 | stop = mri_comment_field (&stopc); | |
2879 | ||
2880 | /* In m68k MRI mode, we need to align to a word boundary, unless | |
2881 | this is ds.b. */ | |
2882 | if (flag_m68k_mri && mult > 1) | |
2883 | { | |
2884 | if (now_seg == absolute_section) | |
2885 | { | |
2886 | abs_section_offset += abs_section_offset & 1; | |
2887 | if (line_label != NULL) | |
2888 | S_SET_VALUE (line_label, abs_section_offset); | |
2889 | } | |
2890 | else if (mri_common_symbol != NULL) | |
2891 | { | |
2892 | valueT val; | |
2893 | ||
2894 | val = S_GET_VALUE (mri_common_symbol); | |
2895 | if ((val & 1) != 0) | |
2896 | { | |
2897 | S_SET_VALUE (mri_common_symbol, val + 1); | |
2898 | if (line_label != NULL) | |
2899 | { | |
2b47531b ILT |
2900 | expressionS *symexp; |
2901 | ||
2902 | symexp = symbol_get_value_expression (line_label); | |
2903 | know (symexp->X_op == O_symbol); | |
2904 | know (symexp->X_add_symbol == mri_common_symbol); | |
2905 | symexp->X_add_number += 1; | |
252b5132 RH |
2906 | } |
2907 | } | |
2908 | } | |
2909 | else | |
2910 | { | |
2911 | do_align (1, (char *) NULL, 0, 0); | |
2912 | if (line_label != NULL) | |
2913 | { | |
2b47531b | 2914 | symbol_set_frag (line_label, frag_now); |
252b5132 RH |
2915 | S_SET_VALUE (line_label, frag_now_fix ()); |
2916 | } | |
2917 | } | |
2918 | } | |
2919 | ||
2920 | bytes = mult; | |
2921 | ||
2922 | expression (&exp); | |
2923 | ||
2924 | SKIP_WHITESPACE (); | |
2925 | if (*input_line_pointer == ',') | |
2926 | { | |
2927 | ++input_line_pointer; | |
2928 | expression (&val); | |
2929 | } | |
2930 | else | |
2931 | { | |
2932 | val.X_op = O_constant; | |
2933 | val.X_add_number = 0; | |
2934 | } | |
2935 | ||
2936 | if (val.X_op != O_constant | |
2937 | || val.X_add_number < - 0x80 | |
2938 | || val.X_add_number > 0xff | |
2939 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
2940 | { | |
2941 | if (exp.X_op != O_constant) | |
0e389e77 | 2942 | as_bad (_("unsupported variable size or fill value")); |
252b5132 RH |
2943 | else |
2944 | { | |
2945 | offsetT i; | |
2946 | ||
2947 | if (mult == 0) | |
2948 | mult = 1; | |
2949 | bytes = mult * exp.X_add_number; | |
2950 | for (i = 0; i < exp.X_add_number; i++) | |
2951 | emit_expr (&val, mult); | |
2952 | } | |
2953 | } | |
2954 | else | |
2955 | { | |
2956 | if (exp.X_op == O_constant) | |
2957 | { | |
2958 | long repeat; | |
2959 | ||
2960 | repeat = exp.X_add_number; | |
2961 | if (mult) | |
2962 | repeat *= mult; | |
2963 | bytes = repeat; | |
2964 | if (repeat <= 0) | |
2965 | { | |
041ff4dd | 2966 | if (!flag_mri) |
252b5132 RH |
2967 | as_warn (_(".space repeat count is zero, ignored")); |
2968 | else if (repeat < 0) | |
2969 | as_warn (_(".space repeat count is negative, ignored")); | |
2970 | goto getout; | |
2971 | } | |
2972 | ||
2973 | /* If we are in the absolute section, just bump the offset. */ | |
2974 | if (now_seg == absolute_section) | |
2975 | { | |
2976 | abs_section_offset += repeat; | |
2977 | goto getout; | |
2978 | } | |
2979 | ||
2980 | /* If we are secretly in an MRI common section, then | |
2981 | creating space just increases the size of the common | |
2982 | symbol. */ | |
2983 | if (mri_common_symbol != NULL) | |
2984 | { | |
2985 | S_SET_VALUE (mri_common_symbol, | |
2986 | S_GET_VALUE (mri_common_symbol) + repeat); | |
2987 | goto getout; | |
2988 | } | |
2989 | ||
2990 | if (!need_pass_2) | |
2991 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
2992 | (offsetT) repeat, (char *) 0); | |
2993 | } | |
2994 | else | |
2995 | { | |
2996 | if (now_seg == absolute_section) | |
2997 | { | |
2998 | as_bad (_("space allocation too complex in absolute section")); | |
2999 | subseg_set (text_section, 0); | |
3000 | } | |
f0e652b4 | 3001 | |
252b5132 RH |
3002 | if (mri_common_symbol != NULL) |
3003 | { | |
3004 | as_bad (_("space allocation too complex in common section")); | |
3005 | mri_common_symbol = NULL; | |
3006 | } | |
f0e652b4 | 3007 | |
252b5132 RH |
3008 | if (!need_pass_2) |
3009 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
3010 | make_expr_symbol (&exp), (offsetT) 0, (char *) 0); | |
3011 | } | |
3012 | ||
3013 | if (p) | |
3014 | *p = val.X_add_number; | |
3015 | } | |
3016 | ||
3017 | getout: | |
3018 | ||
3019 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3020 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3021 | or dcb.b. */ | |
3022 | if (flag_mri && (bytes & 1) != 0) | |
3023 | mri_pending_align = 1; | |
3024 | ||
3025 | demand_empty_rest_of_line (); | |
3026 | ||
3027 | if (flag_mri) | |
3028 | mri_comment_end (stop, stopc); | |
3029 | } | |
3030 | ||
3031 | /* This is like s_space, but the value is a floating point number with | |
3032 | the given precision. This is for the MRI dcb.s pseudo-op and | |
3033 | friends. */ | |
3034 | ||
3035 | void | |
3036 | s_float_space (float_type) | |
3037 | int float_type; | |
3038 | { | |
3039 | offsetT count; | |
3040 | int flen; | |
3041 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
3042 | char *stop = NULL; | |
3043 | char stopc; | |
3044 | ||
3045 | if (flag_mri) | |
3046 | stop = mri_comment_field (&stopc); | |
3047 | ||
3048 | count = get_absolute_expression (); | |
3049 | ||
3050 | SKIP_WHITESPACE (); | |
3051 | if (*input_line_pointer != ',') | |
3052 | { | |
3053 | as_bad (_("missing value")); | |
3054 | ignore_rest_of_line (); | |
3055 | if (flag_mri) | |
3056 | mri_comment_end (stop, stopc); | |
3057 | return; | |
3058 | } | |
3059 | ||
3060 | ++input_line_pointer; | |
3061 | ||
3062 | SKIP_WHITESPACE (); | |
3063 | ||
3064 | /* Skip any 0{letter} that may be present. Don't even check if the | |
3065 | * letter is legal. */ | |
3066 | if (input_line_pointer[0] == '0' | |
3882b010 | 3067 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
3068 | input_line_pointer += 2; |
3069 | ||
3070 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
3071 | with the exact digits specified. */ | |
3072 | if (input_line_pointer[0] == ':') | |
3073 | { | |
3074 | flen = hex_float (float_type, temp); | |
3075 | if (flen < 0) | |
3076 | { | |
3077 | ignore_rest_of_line (); | |
3078 | if (flag_mri) | |
3079 | mri_comment_end (stop, stopc); | |
3080 | return; | |
3081 | } | |
3082 | } | |
3083 | else | |
3084 | { | |
3085 | char *err; | |
3086 | ||
3087 | err = md_atof (float_type, temp, &flen); | |
3088 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3089 | know (flen > 0); | |
3090 | if (err) | |
3091 | { | |
0e389e77 | 3092 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
3093 | ignore_rest_of_line (); |
3094 | if (flag_mri) | |
3095 | mri_comment_end (stop, stopc); | |
3096 | return; | |
3097 | } | |
3098 | } | |
3099 | ||
3100 | while (--count >= 0) | |
3101 | { | |
3102 | char *p; | |
3103 | ||
3104 | p = frag_more (flen); | |
3105 | memcpy (p, temp, (unsigned int) flen); | |
3106 | } | |
3107 | ||
3108 | demand_empty_rest_of_line (); | |
3109 | ||
3110 | if (flag_mri) | |
3111 | mri_comment_end (stop, stopc); | |
3112 | } | |
3113 | ||
3114 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
3115 | ||
3116 | void | |
3117 | s_struct (ignore) | |
ab9da554 | 3118 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3119 | { |
3120 | char *stop = NULL; | |
3121 | char stopc; | |
3122 | ||
3123 | if (flag_mri) | |
3124 | stop = mri_comment_field (&stopc); | |
3125 | abs_section_offset = get_absolute_expression (); | |
3126 | subseg_set (absolute_section, 0); | |
3127 | demand_empty_rest_of_line (); | |
3128 | if (flag_mri) | |
3129 | mri_comment_end (stop, stopc); | |
3130 | } | |
3131 | ||
3132 | void | |
3133 | s_text (ignore) | |
ab9da554 | 3134 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
3135 | { |
3136 | register int temp; | |
3137 | ||
3138 | temp = get_absolute_expression (); | |
3139 | subseg_set (text_section, (subsegT) temp); | |
3140 | demand_empty_rest_of_line (); | |
3141 | #ifdef OBJ_VMS | |
3142 | const_flag &= ~IN_DEFAULT_SECTION; | |
3143 | #endif | |
041ff4dd | 3144 | } |
252b5132 | 3145 | \f |
041ff4dd | 3146 | void |
252b5132 RH |
3147 | demand_empty_rest_of_line () |
3148 | { | |
3149 | SKIP_WHITESPACE (); | |
3150 | if (is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3151 | input_line_pointer++; |
252b5132 | 3152 | else |
041ff4dd NC |
3153 | ignore_rest_of_line (); |
3154 | ||
3155 | /* Return having already swallowed end-of-line. */ | |
3156 | } | |
252b5132 RH |
3157 | |
3158 | void | |
041ff4dd | 3159 | ignore_rest_of_line () |
252b5132 | 3160 | { |
041ff4dd | 3161 | /* For suspect lines: gives warning. */ |
252b5132 RH |
3162 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
3163 | { | |
3882b010 | 3164 | if (ISPRINT (*input_line_pointer)) |
0e389e77 AM |
3165 | as_warn (_("rest of line ignored; first ignored character is `%c'"), |
3166 | *input_line_pointer); | |
252b5132 | 3167 | else |
0e389e77 AM |
3168 | as_warn (_("rest of line ignored; first ignored character valued 0x%x"), |
3169 | *input_line_pointer); | |
f0e652b4 | 3170 | |
252b5132 RH |
3171 | while (input_line_pointer < buffer_limit |
3172 | && !is_end_of_line[(unsigned char) *input_line_pointer]) | |
041ff4dd | 3173 | input_line_pointer++; |
252b5132 | 3174 | } |
f0e652b4 | 3175 | |
041ff4dd NC |
3176 | input_line_pointer++; |
3177 | ||
3178 | /* Return pointing just after end-of-line. */ | |
252b5132 RH |
3179 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3180 | } | |
3181 | ||
3182 | void | |
3183 | discard_rest_of_line () | |
3184 | { | |
3185 | while (input_line_pointer < buffer_limit | |
041ff4dd NC |
3186 | && !is_end_of_line[(unsigned char) *input_line_pointer]) |
3187 | input_line_pointer++; | |
3188 | ||
3189 | input_line_pointer++; | |
f0e652b4 | 3190 | |
041ff4dd | 3191 | /* Return pointing just after end-of-line. */ |
252b5132 RH |
3192 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
3193 | } | |
3194 | ||
041ff4dd NC |
3195 | /* In: Pointer to a symbol. |
3196 | Input_line_pointer->expression. | |
f0e652b4 | 3197 | |
041ff4dd NC |
3198 | Out: Input_line_pointer->just after any whitespace after expression. |
3199 | Tried to set symbol to value of expression. | |
3200 | Will change symbols type, value, and frag; */ | |
3201 | ||
252b5132 RH |
3202 | void |
3203 | pseudo_set (symbolP) | |
3204 | symbolS *symbolP; | |
3205 | { | |
3206 | expressionS exp; | |
3207 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3208 | int ext; | |
3209 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3210 | ||
041ff4dd | 3211 | know (symbolP); /* NULL pointer is logic error. */ |
252b5132 RH |
3212 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
3213 | ext = S_IS_EXTERNAL (symbolP); | |
3214 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3215 | ||
ce34c373 | 3216 | (void) expression (&exp); |
252b5132 RH |
3217 | |
3218 | if (exp.X_op == O_illegal) | |
0e389e77 | 3219 | as_bad (_("illegal expression")); |
252b5132 | 3220 | else if (exp.X_op == O_absent) |
0e389e77 | 3221 | as_bad (_("missing expression")); |
252b5132 RH |
3222 | else if (exp.X_op == O_big) |
3223 | { | |
3224 | if (exp.X_add_number > 0) | |
0e389e77 | 3225 | as_bad (_("bignum invalid")); |
252b5132 | 3226 | else |
0e389e77 | 3227 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3228 | } |
3229 | else if (exp.X_op == O_subtract | |
3230 | && (S_GET_SEGMENT (exp.X_add_symbol) | |
3231 | == S_GET_SEGMENT (exp.X_op_symbol)) | |
3232 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) | |
2b47531b ILT |
3233 | && (symbol_get_frag (exp.X_add_symbol) |
3234 | == symbol_get_frag (exp.X_op_symbol))) | |
252b5132 RH |
3235 | { |
3236 | exp.X_op = O_constant; | |
3237 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
3238 | - S_GET_VALUE (exp.X_op_symbol)); | |
3239 | } | |
3240 | ||
3241 | switch (exp.X_op) | |
3242 | { | |
3243 | case O_illegal: | |
3244 | case O_absent: | |
3245 | case O_big: | |
3246 | exp.X_add_number = 0; | |
3247 | /* Fall through. */ | |
3248 | case O_constant: | |
3249 | S_SET_SEGMENT (symbolP, absolute_section); | |
3250 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3251 | if (ext) | |
3252 | S_SET_EXTERNAL (symbolP); | |
3253 | else | |
3254 | S_CLEAR_EXTERNAL (symbolP); | |
3255 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3256 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
3257 | if (exp.X_op != O_constant) | |
041ff4dd | 3258 | symbol_set_frag (symbolP, &zero_address_frag); |
252b5132 RH |
3259 | break; |
3260 | ||
3261 | case O_register: | |
3262 | S_SET_SEGMENT (symbolP, reg_section); | |
3263 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
2b47531b | 3264 | symbol_set_frag (symbolP, &zero_address_frag); |
252b5132 RH |
3265 | break; |
3266 | ||
3267 | case O_symbol: | |
3268 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section | |
3269 | || exp.X_add_number != 0) | |
2b47531b | 3270 | symbol_set_value_expression (symbolP, &exp); |
53b0d397 | 3271 | else if (symbol_section_p (symbolP)) |
0e389e77 | 3272 | as_bad ("attempt to set value of section symbol"); |
252b5132 RH |
3273 | else |
3274 | { | |
3275 | symbolS *s = exp.X_add_symbol; | |
3276 | ||
3277 | S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s)); | |
3278 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) | |
3279 | if (ext) | |
3280 | S_SET_EXTERNAL (symbolP); | |
3281 | else | |
3282 | S_CLEAR_EXTERNAL (symbolP); | |
3283 | #endif /* OBJ_AOUT or OBJ_BOUT */ | |
3284 | S_SET_VALUE (symbolP, | |
3285 | exp.X_add_number + S_GET_VALUE (s)); | |
2b47531b | 3286 | symbol_set_frag (symbolP, symbol_get_frag (s)); |
252b5132 RH |
3287 | copy_symbol_attributes (symbolP, s); |
3288 | } | |
3289 | break; | |
3290 | ||
3291 | default: | |
ce34c373 AM |
3292 | /* The value is some complex expression. |
3293 | FIXME: Should we set the segment to anything? */ | |
2b47531b | 3294 | symbol_set_value_expression (symbolP, &exp); |
252b5132 RH |
3295 | break; |
3296 | } | |
3297 | } | |
3298 | \f | |
041ff4dd | 3299 | /* cons() |
f0e652b4 | 3300 | |
041ff4dd NC |
3301 | CONStruct more frag of .bytes, or .words etc. |
3302 | Should need_pass_2 be 1 then emit no frag(s). | |
3303 | This understands EXPRESSIONS. | |
f0e652b4 | 3304 | |
041ff4dd | 3305 | Bug (?) |
f0e652b4 | 3306 | |
041ff4dd NC |
3307 | This has a split personality. We use expression() to read the |
3308 | value. We can detect if the value won't fit in a byte or word. | |
3309 | But we can't detect if expression() discarded significant digits | |
3310 | in the case of a long. Not worth the crocks required to fix it. */ | |
252b5132 RH |
3311 | |
3312 | /* Select a parser for cons expressions. */ | |
3313 | ||
3314 | /* Some targets need to parse the expression in various fancy ways. | |
3315 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
3316 | (for example, the HPPA does this). Otherwise, you can define | |
3317 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
3318 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
3319 | are defined, which is the normal case, then only simple expressions | |
3320 | are permitted. */ | |
3321 | ||
abd63a32 | 3322 | #ifdef TC_M68K |
252b5132 RH |
3323 | static void |
3324 | parse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
abd63a32 | 3325 | #endif |
252b5132 RH |
3326 | |
3327 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3328 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3329 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
041ff4dd | 3330 | static void |
252b5132 RH |
3331 | parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes)); |
3332 | #endif | |
3333 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3334 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
3335 | static void | |
3336 | parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
3337 | #endif | |
3338 | ||
3339 | /* If we haven't gotten one yet, just call expression. */ | |
3340 | #ifndef TC_PARSE_CONS_EXPRESSION | |
3341 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
3342 | #endif | |
3343 | #endif | |
3344 | ||
041ff4dd NC |
3345 | /* Worker to do .byte etc statements. |
3346 | Clobbers input_line_pointer and checks end-of-line. */ | |
3347 | ||
3348 | static void | |
252b5132 | 3349 | cons_worker (nbytes, rva) |
041ff4dd | 3350 | register int nbytes; /* 1=.byte, 2=.word, 4=.long. */ |
252b5132 RH |
3351 | int rva; |
3352 | { | |
3353 | int c; | |
3354 | expressionS exp; | |
3355 | char *stop = NULL; | |
3356 | char stopc; | |
3357 | ||
3358 | #ifdef md_flush_pending_output | |
3359 | md_flush_pending_output (); | |
3360 | #endif | |
3361 | ||
3362 | if (flag_mri) | |
3363 | stop = mri_comment_field (&stopc); | |
3364 | ||
3365 | if (is_it_end_of_statement ()) | |
3366 | { | |
3367 | demand_empty_rest_of_line (); | |
3368 | if (flag_mri) | |
3369 | mri_comment_end (stop, stopc); | |
3370 | return; | |
3371 | } | |
3372 | ||
3373 | #ifdef md_cons_align | |
3374 | md_cons_align (nbytes); | |
3375 | #endif | |
3376 | ||
3377 | c = 0; | |
3378 | do | |
3379 | { | |
abd63a32 | 3380 | #ifdef TC_M68K |
252b5132 RH |
3381 | if (flag_m68k_mri) |
3382 | parse_mri_cons (&exp, (unsigned int) nbytes); | |
3383 | else | |
abd63a32 | 3384 | #endif |
252b5132 RH |
3385 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); |
3386 | ||
3387 | if (rva) | |
3388 | { | |
3389 | if (exp.X_op == O_symbol) | |
3390 | exp.X_op = O_symbol_rva; | |
3391 | else | |
3392 | as_fatal (_("rva without symbol")); | |
3393 | } | |
3394 | emit_expr (&exp, (unsigned int) nbytes); | |
3395 | ++c; | |
3396 | } | |
3397 | while (*input_line_pointer++ == ','); | |
3398 | ||
3399 | /* In MRI mode, after an odd number of bytes, we must align to an | |
3400 | even word boundary, unless the next instruction is a dc.b, ds.b | |
3401 | or dcb.b. */ | |
3402 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
3403 | mri_pending_align = 1; | |
3404 | ||
041ff4dd | 3405 | input_line_pointer--; /* Put terminator back into stream. */ |
252b5132 RH |
3406 | |
3407 | demand_empty_rest_of_line (); | |
3408 | ||
3409 | if (flag_mri) | |
3410 | mri_comment_end (stop, stopc); | |
3411 | } | |
3412 | ||
252b5132 RH |
3413 | void |
3414 | cons (size) | |
3415 | int size; | |
3416 | { | |
3417 | cons_worker (size, 0); | |
3418 | } | |
3419 | ||
041ff4dd | 3420 | void |
252b5132 RH |
3421 | s_rva (size) |
3422 | int size; | |
3423 | { | |
3424 | cons_worker (size, 1); | |
3425 | } | |
3426 | ||
3427 | /* Put the contents of expression EXP into the object file using | |
3428 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
3429 | ||
3430 | void | |
3431 | emit_expr (exp, nbytes) | |
3432 | expressionS *exp; | |
3433 | unsigned int nbytes; | |
3434 | { | |
3435 | operatorT op; | |
3436 | register char *p; | |
3437 | valueT extra_digit = 0; | |
3438 | ||
3439 | /* Don't do anything if we are going to make another pass. */ | |
3440 | if (need_pass_2) | |
3441 | return; | |
3442 | ||
3443 | #ifndef NO_LISTING | |
3444 | #ifdef OBJ_ELF | |
3445 | /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will | |
3446 | appear as a four byte positive constant in the .line section, | |
3447 | followed by a 2 byte 0xffff. Look for that case here. */ | |
3448 | { | |
3449 | static int dwarf_line = -1; | |
3450 | ||
3451 | if (strcmp (segment_name (now_seg), ".line") != 0) | |
3452 | dwarf_line = -1; | |
3453 | else if (dwarf_line >= 0 | |
3454 | && nbytes == 2 | |
3455 | && exp->X_op == O_constant | |
3456 | && (exp->X_add_number == -1 || exp->X_add_number == 0xffff)) | |
3457 | listing_source_line ((unsigned int) dwarf_line); | |
3458 | else if (nbytes == 4 | |
3459 | && exp->X_op == O_constant | |
3460 | && exp->X_add_number >= 0) | |
3461 | dwarf_line = exp->X_add_number; | |
3462 | else | |
3463 | dwarf_line = -1; | |
3464 | } | |
3465 | ||
3466 | /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will | |
3467 | appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte | |
3468 | AT_sibling (0x12) followed by a four byte address of the sibling | |
3469 | followed by a 2 byte AT_name (0x38) followed by the name of the | |
3470 | file. We look for that case here. */ | |
3471 | { | |
3472 | static int dwarf_file = 0; | |
3473 | ||
3474 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
3475 | dwarf_file = 0; | |
3476 | else if (dwarf_file == 0 | |
3477 | && nbytes == 2 | |
3478 | && exp->X_op == O_constant | |
3479 | && exp->X_add_number == 0x11) | |
3480 | dwarf_file = 1; | |
3481 | else if (dwarf_file == 1 | |
3482 | && nbytes == 2 | |
3483 | && exp->X_op == O_constant | |
3484 | && exp->X_add_number == 0x12) | |
3485 | dwarf_file = 2; | |
3486 | else if (dwarf_file == 2 | |
3487 | && nbytes == 4) | |
3488 | dwarf_file = 3; | |
3489 | else if (dwarf_file == 3 | |
3490 | && nbytes == 2 | |
3491 | && exp->X_op == O_constant | |
3492 | && exp->X_add_number == 0x38) | |
3493 | dwarf_file = 4; | |
3494 | else | |
3495 | dwarf_file = 0; | |
3496 | ||
3497 | /* The variable dwarf_file_string tells stringer that the string | |
3498 | may be the name of the source file. */ | |
3499 | if (dwarf_file == 4) | |
3500 | dwarf_file_string = 1; | |
3501 | else | |
3502 | dwarf_file_string = 0; | |
3503 | } | |
3504 | #endif | |
3505 | #endif | |
3506 | ||
3507 | if (check_eh_frame (exp, &nbytes)) | |
3508 | return; | |
3509 | ||
3510 | op = exp->X_op; | |
3511 | ||
3512 | /* Allow `.word 0' in the absolute section. */ | |
3513 | if (now_seg == absolute_section) | |
3514 | { | |
3515 | if (op != O_constant || exp->X_add_number != 0) | |
3516 | as_bad (_("attempt to store value in absolute section")); | |
3517 | abs_section_offset += nbytes; | |
3518 | return; | |
3519 | } | |
3520 | ||
3521 | /* Handle a negative bignum. */ | |
3522 | if (op == O_uminus | |
3523 | && exp->X_add_number == 0 | |
2b47531b ILT |
3524 | && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big |
3525 | && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0) | |
252b5132 RH |
3526 | { |
3527 | int i; | |
3528 | unsigned long carry; | |
3529 | ||
2b47531b | 3530 | exp = symbol_get_value_expression (exp->X_add_symbol); |
252b5132 RH |
3531 | |
3532 | /* Negate the bignum: one's complement each digit and add 1. */ | |
3533 | carry = 1; | |
3534 | for (i = 0; i < exp->X_add_number; i++) | |
3535 | { | |
3536 | unsigned long next; | |
3537 | ||
041ff4dd | 3538 | next = (((~(generic_bignum[i] & LITTLENUM_MASK)) |
252b5132 RH |
3539 | & LITTLENUM_MASK) |
3540 | + carry); | |
3541 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3542 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3543 | } | |
3544 | ||
3545 | /* We can ignore any carry out, because it will be handled by | |
3546 | extra_digit if it is needed. */ | |
3547 | ||
3548 | extra_digit = (valueT) -1; | |
3549 | op = O_big; | |
3550 | } | |
3551 | ||
3552 | if (op == O_absent || op == O_illegal) | |
3553 | { | |
3554 | as_warn (_("zero assumed for missing expression")); | |
3555 | exp->X_add_number = 0; | |
3556 | op = O_constant; | |
3557 | } | |
3558 | else if (op == O_big && exp->X_add_number <= 0) | |
3559 | { | |
0e389e77 | 3560 | as_bad (_("floating point number invalid")); |
252b5132 RH |
3561 | exp->X_add_number = 0; |
3562 | op = O_constant; | |
3563 | } | |
3564 | else if (op == O_register) | |
3565 | { | |
3566 | as_warn (_("register value used as expression")); | |
3567 | op = O_constant; | |
3568 | } | |
3569 | ||
3570 | p = frag_more ((int) nbytes); | |
3571 | ||
3572 | #ifndef WORKING_DOT_WORD | |
3573 | /* If we have the difference of two symbols in a word, save it on | |
3574 | the broken_words list. See the code in write.c. */ | |
3575 | if (op == O_subtract && nbytes == 2) | |
3576 | { | |
3577 | struct broken_word *x; | |
3578 | ||
3579 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3580 | x->next_broken_word = broken_words; | |
3581 | broken_words = x; | |
3582 | x->seg = now_seg; | |
3583 | x->subseg = now_subseg; | |
3584 | x->frag = frag_now; | |
3585 | x->word_goes_here = p; | |
3586 | x->dispfrag = 0; | |
3587 | x->add = exp->X_add_symbol; | |
3588 | x->sub = exp->X_op_symbol; | |
3589 | x->addnum = exp->X_add_number; | |
3590 | x->added = 0; | |
3591 | new_broken_words++; | |
3592 | return; | |
3593 | } | |
3594 | #endif | |
3595 | ||
3596 | /* If we have an integer, but the number of bytes is too large to | |
3597 | pass to md_number_to_chars, handle it as a bignum. */ | |
3598 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3599 | { | |
3600 | valueT val; | |
3601 | int gencnt; | |
3602 | ||
041ff4dd | 3603 | if (!exp->X_unsigned && exp->X_add_number < 0) |
252b5132 RH |
3604 | extra_digit = (valueT) -1; |
3605 | val = (valueT) exp->X_add_number; | |
3606 | gencnt = 0; | |
3607 | do | |
3608 | { | |
3609 | generic_bignum[gencnt] = val & LITTLENUM_MASK; | |
3610 | val >>= LITTLENUM_NUMBER_OF_BITS; | |
3611 | ++gencnt; | |
3612 | } | |
3613 | while (val != 0); | |
3614 | op = exp->X_op = O_big; | |
3615 | exp->X_add_number = gencnt; | |
3616 | } | |
3617 | ||
3618 | if (op == O_constant) | |
3619 | { | |
3620 | register valueT get; | |
3621 | register valueT use; | |
3622 | register valueT mask; | |
3623 | valueT hibit; | |
3624 | register valueT unmask; | |
3625 | ||
3626 | /* JF << of >= number of bits in the object is undefined. In | |
041ff4dd | 3627 | particular SPARC (Sun 4) has problems. */ |
252b5132 RH |
3628 | if (nbytes >= sizeof (valueT)) |
3629 | { | |
3630 | mask = 0; | |
3631 | if (nbytes > sizeof (valueT)) | |
3632 | hibit = 0; | |
3633 | else | |
3634 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3635 | } | |
3636 | else | |
3637 | { | |
041ff4dd | 3638 | /* Don't store these bits. */ |
252b5132 RH |
3639 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); |
3640 | hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1); | |
3641 | } | |
3642 | ||
041ff4dd | 3643 | unmask = ~mask; /* Do store these bits. */ |
252b5132 RH |
3644 | |
3645 | #ifdef NEVER | |
3646 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
041ff4dd | 3647 | mask = ~(unmask >> 1); /* Includes sign bit now. */ |
252b5132 RH |
3648 | #endif |
3649 | ||
3650 | get = exp->X_add_number; | |
3651 | use = get & unmask; | |
3652 | if ((get & mask) != 0 | |
3653 | && ((get & mask) != mask | |
3654 | || (get & hibit) == 0)) | |
041ff4dd | 3655 | { /* Leading bits contain both 0s & 1s. */ |
0e389e77 | 3656 | as_warn (_("value 0x%lx truncated to 0x%lx"), |
252b5132 RH |
3657 | (unsigned long) get, (unsigned long) use); |
3658 | } | |
041ff4dd | 3659 | /* Put bytes in right order. */ |
252b5132 RH |
3660 | md_number_to_chars (p, use, (int) nbytes); |
3661 | } | |
3662 | else if (op == O_big) | |
3663 | { | |
3664 | unsigned int size; | |
3665 | LITTLENUM_TYPE *nums; | |
3666 | ||
3667 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
3668 | ||
3669 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
3670 | if (nbytes < size) | |
3671 | { | |
0e389e77 | 3672 | as_warn (_("bignum truncated to %d bytes"), nbytes); |
252b5132 RH |
3673 | size = nbytes; |
3674 | } | |
3675 | ||
3676 | if (target_big_endian) | |
3677 | { | |
3678 | while (nbytes > size) | |
3679 | { | |
3680 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3681 | nbytes -= CHARS_PER_LITTLENUM; | |
3682 | p += CHARS_PER_LITTLENUM; | |
3683 | } | |
3684 | ||
3685 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
ceac3f62 | 3686 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3687 | { |
3688 | --nums; | |
3689 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3690 | size -= CHARS_PER_LITTLENUM; | |
3691 | p += CHARS_PER_LITTLENUM; | |
3692 | } | |
3693 | } | |
3694 | else | |
3695 | { | |
3696 | nums = generic_bignum; | |
ceac3f62 | 3697 | while (size >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3698 | { |
3699 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3700 | ++nums; | |
3701 | size -= CHARS_PER_LITTLENUM; | |
3702 | p += CHARS_PER_LITTLENUM; | |
3703 | nbytes -= CHARS_PER_LITTLENUM; | |
3704 | } | |
3705 | ||
ceac3f62 | 3706 | while (nbytes >= CHARS_PER_LITTLENUM) |
252b5132 RH |
3707 | { |
3708 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3709 | nbytes -= CHARS_PER_LITTLENUM; | |
3710 | p += CHARS_PER_LITTLENUM; | |
3711 | } | |
3712 | } | |
3713 | } | |
3714 | else | |
3715 | { | |
3716 | memset (p, 0, nbytes); | |
3717 | ||
3718 | /* Now we need to generate a fixS to record the symbol value. | |
3719 | This is easy for BFD. For other targets it can be more | |
3720 | complex. For very complex cases (currently, the HPPA and | |
3721 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
3722 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
3723 | the name of the reloc code that should be stored in the fixS. | |
3724 | If neither is defined, the code uses NO_RELOC if it is | |
3725 | defined, and otherwise uses 0. */ | |
3726 | ||
3727 | #ifdef BFD_ASSEMBLER | |
3728 | #ifdef TC_CONS_FIX_NEW | |
3729 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3730 | #else | |
3731 | { | |
3732 | bfd_reloc_code_real_type r; | |
3733 | ||
3734 | switch (nbytes) | |
3735 | { | |
3736 | case 1: | |
3737 | r = BFD_RELOC_8; | |
3738 | break; | |
3739 | case 2: | |
3740 | r = BFD_RELOC_16; | |
3741 | break; | |
3742 | case 4: | |
3743 | r = BFD_RELOC_32; | |
3744 | break; | |
3745 | case 8: | |
3746 | r = BFD_RELOC_64; | |
3747 | break; | |
3748 | default: | |
3749 | as_bad (_("unsupported BFD relocation size %u"), nbytes); | |
3750 | r = BFD_RELOC_32; | |
3751 | break; | |
3752 | } | |
3753 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, | |
3754 | 0, r); | |
3755 | } | |
3756 | #endif | |
3757 | #else | |
3758 | #ifdef TC_CONS_FIX_NEW | |
3759 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3760 | #else | |
3761 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
3762 | it is defined, otherwise use NO_RELOC if it is defined, | |
3763 | otherwise use 0. */ | |
3764 | #ifndef TC_CONS_RELOC | |
3765 | #ifdef NO_RELOC | |
3766 | #define TC_CONS_RELOC NO_RELOC | |
3767 | #else | |
3768 | #define TC_CONS_RELOC 0 | |
3769 | #endif | |
3770 | #endif | |
3771 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, | |
3772 | TC_CONS_RELOC); | |
3773 | #endif /* TC_CONS_FIX_NEW */ | |
3774 | #endif /* BFD_ASSEMBLER */ | |
3775 | } | |
3776 | } | |
3777 | \f | |
3778 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
3779 | ||
3780 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as | |
3781 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3782 | then pack them all together. We do a little better in that we allow | |
3783 | them in words, longs, etc. and we'll pack them in target byte order | |
3784 | for you. | |
3785 | ||
3786 | The rules are: pack least significat bit first, if a field doesn't | |
3787 | entirely fit, put it in the next unit. Overflowing the bitfield is | |
3788 | explicitly *not* even a warning. The bitwidth should be considered | |
3789 | a "mask". | |
3790 | ||
3791 | To use this function the tc-XXX.h file should define | |
3792 | BITFIELD_CONS_EXPRESSIONS. */ | |
3793 | ||
041ff4dd | 3794 | static void |
252b5132 RH |
3795 | parse_bitfield_cons (exp, nbytes) |
3796 | expressionS *exp; | |
3797 | unsigned int nbytes; | |
3798 | { | |
3799 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3800 | char *hold = input_line_pointer; | |
3801 | ||
3802 | (void) expression (exp); | |
3803 | ||
3804 | if (*input_line_pointer == ':') | |
041ff4dd NC |
3805 | { |
3806 | /* Bitfields. */ | |
252b5132 RH |
3807 | long value = 0; |
3808 | ||
3809 | for (;;) | |
3810 | { | |
3811 | unsigned long width; | |
3812 | ||
3813 | if (*input_line_pointer != ':') | |
3814 | { | |
3815 | input_line_pointer = hold; | |
3816 | break; | |
041ff4dd | 3817 | } /* Next piece is not a bitfield. */ |
252b5132 RH |
3818 | |
3819 | /* In the general case, we can't allow | |
3820 | full expressions with symbol | |
3821 | differences and such. The relocation | |
3822 | entries for symbols not defined in this | |
3823 | assembly would require arbitrary field | |
3824 | widths, positions, and masks which most | |
3825 | of our current object formats don't | |
3826 | support. | |
3827 | ||
3828 | In the specific case where a symbol | |
3829 | *is* defined in this assembly, we | |
3830 | *could* build fixups and track it, but | |
3831 | this could lead to confusion for the | |
3832 | backends. I'm lazy. I'll take any | |
3833 | SEG_ABSOLUTE. I think that means that | |
3834 | you can use a previous .set or | |
041ff4dd | 3835 | .equ type symbol. xoxorich. */ |
252b5132 RH |
3836 | |
3837 | if (exp->X_op == O_absent) | |
3838 | { | |
3839 | as_warn (_("using a bit field width of zero")); | |
3840 | exp->X_add_number = 0; | |
3841 | exp->X_op = O_constant; | |
041ff4dd | 3842 | } /* Implied zero width bitfield. */ |
252b5132 RH |
3843 | |
3844 | if (exp->X_op != O_constant) | |
3845 | { | |
3846 | *input_line_pointer = '\0'; | |
3847 | as_bad (_("field width \"%s\" too complex for a bitfield"), hold); | |
3848 | *input_line_pointer = ':'; | |
3849 | demand_empty_rest_of_line (); | |
3850 | return; | |
041ff4dd | 3851 | } /* Too complex. */ |
252b5132 RH |
3852 | |
3853 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
3854 | { | |
3855 | as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"), | |
3856 | width, nbytes, (BITS_PER_CHAR * nbytes)); | |
3857 | width = BITS_PER_CHAR * nbytes; | |
041ff4dd | 3858 | } /* Too big. */ |
252b5132 RH |
3859 | |
3860 | if (width > bits_available) | |
3861 | { | |
3862 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ | |
3863 | input_line_pointer = hold; | |
3864 | exp->X_add_number = value; | |
3865 | break; | |
041ff4dd | 3866 | } /* Won't fit. */ |
252b5132 | 3867 | |
ef99799a KH |
3868 | /* Skip ':'. */ |
3869 | hold = ++input_line_pointer; | |
252b5132 RH |
3870 | |
3871 | (void) expression (exp); | |
3872 | if (exp->X_op != O_constant) | |
3873 | { | |
3874 | char cache = *input_line_pointer; | |
3875 | ||
3876 | *input_line_pointer = '\0'; | |
3877 | as_bad (_("field value \"%s\" too complex for a bitfield"), hold); | |
3878 | *input_line_pointer = cache; | |
3879 | demand_empty_rest_of_line (); | |
3880 | return; | |
041ff4dd | 3881 | } /* Too complex. */ |
252b5132 RH |
3882 | |
3883 | value |= ((~(-1 << width) & exp->X_add_number) | |
3884 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
3885 | ||
3886 | if ((bits_available -= width) == 0 | |
3887 | || is_it_end_of_statement () | |
3888 | || *input_line_pointer != ',') | |
3889 | { | |
3890 | break; | |
041ff4dd | 3891 | } /* All the bitfields we're gonna get. */ |
252b5132 RH |
3892 | |
3893 | hold = ++input_line_pointer; | |
3894 | (void) expression (exp); | |
041ff4dd | 3895 | } |
252b5132 RH |
3896 | |
3897 | exp->X_add_number = value; | |
3898 | exp->X_op = O_constant; | |
3899 | exp->X_unsigned = 1; | |
041ff4dd NC |
3900 | } |
3901 | } | |
252b5132 RH |
3902 | |
3903 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
3904 | \f | |
3905 | /* Handle an MRI style string expression. */ | |
3906 | ||
abd63a32 | 3907 | #ifdef TC_M68K |
252b5132 RH |
3908 | static void |
3909 | parse_mri_cons (exp, nbytes) | |
3910 | expressionS *exp; | |
3911 | unsigned int nbytes; | |
3912 | { | |
3913 | if (*input_line_pointer != '\'' | |
3914 | && (input_line_pointer[1] != '\'' | |
3915 | || (*input_line_pointer != 'A' | |
3916 | && *input_line_pointer != 'E'))) | |
3917 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3918 | else | |
3919 | { | |
3920 | unsigned int scan; | |
3921 | unsigned int result = 0; | |
3922 | ||
3923 | /* An MRI style string. Cut into as many bytes as will fit into | |
3924 | a nbyte chunk, left justify if necessary, and separate with | |
3925 | commas so we can try again later. */ | |
3926 | if (*input_line_pointer == 'A') | |
3927 | ++input_line_pointer; | |
3928 | else if (*input_line_pointer == 'E') | |
3929 | { | |
3930 | as_bad (_("EBCDIC constants are not supported")); | |
3931 | ++input_line_pointer; | |
3932 | } | |
3933 | ||
3934 | input_line_pointer++; | |
3935 | for (scan = 0; scan < nbytes; scan++) | |
3936 | { | |
3937 | if (*input_line_pointer == '\'') | |
3938 | { | |
3939 | if (input_line_pointer[1] == '\'') | |
3940 | { | |
3941 | input_line_pointer++; | |
3942 | } | |
3943 | else | |
3944 | break; | |
3945 | } | |
3946 | result = (result << 8) | (*input_line_pointer++); | |
3947 | } | |
3948 | ||
041ff4dd | 3949 | /* Left justify. */ |
252b5132 RH |
3950 | while (scan < nbytes) |
3951 | { | |
3952 | result <<= 8; | |
3953 | scan++; | |
3954 | } | |
f0e652b4 | 3955 | |
041ff4dd | 3956 | /* Create correct expression. */ |
252b5132 RH |
3957 | exp->X_op = O_constant; |
3958 | exp->X_add_number = result; | |
f0e652b4 | 3959 | |
041ff4dd | 3960 | /* Fake it so that we can read the next char too. */ |
252b5132 RH |
3961 | if (input_line_pointer[0] != '\'' || |
3962 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
3963 | { | |
3964 | input_line_pointer -= 2; | |
3965 | input_line_pointer[0] = ','; | |
3966 | input_line_pointer[1] = '\''; | |
3967 | } | |
3968 | else | |
3969 | input_line_pointer++; | |
3970 | } | |
3971 | } | |
abd63a32 | 3972 | #endif /* TC_M68K */ |
252b5132 RH |
3973 | \f |
3974 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3975 | ||
3976 | /* Parse a repeat expression for cons. This is used by the MIPS | |
3977 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
3978 | object file COUNT times. | |
3979 | ||
3980 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
3981 | ||
3982 | static void | |
3983 | parse_repeat_cons (exp, nbytes) | |
3984 | expressionS *exp; | |
3985 | unsigned int nbytes; | |
3986 | { | |
3987 | expressionS count; | |
3988 | register int i; | |
3989 | ||
3990 | expression (exp); | |
3991 | ||
3992 | if (*input_line_pointer != ':') | |
3993 | { | |
3994 | /* No repeat count. */ | |
3995 | return; | |
3996 | } | |
3997 | ||
3998 | ++input_line_pointer; | |
3999 | expression (&count); | |
4000 | if (count.X_op != O_constant | |
4001 | || count.X_add_number <= 0) | |
4002 | { | |
0e389e77 | 4003 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4004 | return; |
4005 | } | |
4006 | ||
4007 | /* The cons function is going to output this expression once. So we | |
4008 | output it count - 1 times. */ | |
4009 | for (i = count.X_add_number - 1; i > 0; i--) | |
4010 | emit_expr (exp, nbytes); | |
4011 | } | |
4012 | ||
4013 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
4014 | \f | |
4015 | /* Parse a floating point number represented as a hex constant. This | |
4016 | permits users to specify the exact bits they want in the floating | |
4017 | point number. */ | |
4018 | ||
4019 | static int | |
4020 | hex_float (float_type, bytes) | |
4021 | int float_type; | |
4022 | char *bytes; | |
4023 | { | |
4024 | int length; | |
4025 | int i; | |
4026 | ||
4027 | switch (float_type) | |
4028 | { | |
4029 | case 'f': | |
4030 | case 'F': | |
4031 | case 's': | |
4032 | case 'S': | |
4033 | length = 4; | |
4034 | break; | |
4035 | ||
4036 | case 'd': | |
4037 | case 'D': | |
4038 | case 'r': | |
4039 | case 'R': | |
4040 | length = 8; | |
4041 | break; | |
4042 | ||
4043 | case 'x': | |
4044 | case 'X': | |
4045 | length = 12; | |
4046 | break; | |
4047 | ||
4048 | case 'p': | |
4049 | case 'P': | |
4050 | length = 12; | |
4051 | break; | |
4052 | ||
4053 | default: | |
0e389e77 | 4054 | as_bad (_("unknown floating type type '%c'"), float_type); |
252b5132 RH |
4055 | return -1; |
4056 | } | |
4057 | ||
4058 | /* It would be nice if we could go through expression to parse the | |
4059 | hex constant, but if we get a bignum it's a pain to sort it into | |
4060 | the buffer correctly. */ | |
4061 | i = 0; | |
4062 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
4063 | { | |
4064 | int d; | |
4065 | ||
4066 | /* The MRI assembler accepts arbitrary underscores strewn about | |
041ff4dd | 4067 | through the hex constant, so we ignore them as well. */ |
252b5132 RH |
4068 | if (*input_line_pointer == '_') |
4069 | { | |
4070 | ++input_line_pointer; | |
4071 | continue; | |
4072 | } | |
4073 | ||
4074 | if (i >= length) | |
4075 | { | |
0e389e77 | 4076 | as_warn (_("floating point constant too large")); |
252b5132 RH |
4077 | return -1; |
4078 | } | |
4079 | d = hex_value (*input_line_pointer) << 4; | |
4080 | ++input_line_pointer; | |
4081 | while (*input_line_pointer == '_') | |
4082 | ++input_line_pointer; | |
4083 | if (hex_p (*input_line_pointer)) | |
4084 | { | |
4085 | d += hex_value (*input_line_pointer); | |
4086 | ++input_line_pointer; | |
4087 | } | |
4088 | if (target_big_endian) | |
4089 | bytes[i] = d; | |
4090 | else | |
4091 | bytes[length - i - 1] = d; | |
4092 | ++i; | |
4093 | } | |
4094 | ||
4095 | if (i < length) | |
4096 | { | |
4097 | if (target_big_endian) | |
4098 | memset (bytes + i, 0, length - i); | |
4099 | else | |
4100 | memset (bytes, 0, length - i); | |
4101 | } | |
4102 | ||
4103 | return length; | |
4104 | } | |
4105 | ||
041ff4dd | 4106 | /* float_cons() |
f0e652b4 | 4107 | |
041ff4dd NC |
4108 | CONStruct some more frag chars of .floats .ffloats etc. |
4109 | Makes 0 or more new frags. | |
4110 | If need_pass_2 == 1, no frags are emitted. | |
4111 | This understands only floating literals, not expressions. Sorry. | |
f0e652b4 | 4112 | |
041ff4dd NC |
4113 | A floating constant is defined by atof_generic(), except it is preceded |
4114 | by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
4115 | reading, I decided to be incompatible. This always tries to give you | |
4116 | rounded bits to the precision of the pseudo-op. Former AS did premature | |
4117 | truncatation, restored noisy bits instead of trailing 0s AND gave you | |
4118 | a choice of 2 flavours of noise according to which of 2 floating-point | |
4119 | scanners you directed AS to use. | |
f0e652b4 | 4120 | |
041ff4dd | 4121 | In: input_line_pointer->whitespace before, or '0' of flonum. */ |
252b5132 RH |
4122 | |
4123 | void | |
4124 | float_cons (float_type) | |
041ff4dd NC |
4125 | /* Clobbers input_line-pointer, checks end-of-line. */ |
4126 | register int float_type; /* 'f':.ffloat ... 'F':.float ... */ | |
252b5132 RH |
4127 | { |
4128 | register char *p; | |
041ff4dd NC |
4129 | int length; /* Number of chars in an object. */ |
4130 | register char *err; /* Error from scanning floating literal. */ | |
252b5132 RH |
4131 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; |
4132 | ||
4133 | if (is_it_end_of_statement ()) | |
4134 | { | |
4135 | demand_empty_rest_of_line (); | |
4136 | return; | |
4137 | } | |
4138 | ||
4139 | #ifdef md_flush_pending_output | |
4140 | md_flush_pending_output (); | |
4141 | #endif | |
4142 | ||
4143 | do | |
4144 | { | |
041ff4dd | 4145 | /* input_line_pointer->1st char of a flonum (we hope!). */ |
252b5132 RH |
4146 | SKIP_WHITESPACE (); |
4147 | ||
4148 | /* Skip any 0{letter} that may be present. Don't even check if the | |
041ff4dd NC |
4149 | letter is legal. Someone may invent a "z" format and this routine |
4150 | has no use for such information. Lusers beware: you get | |
4151 | diagnostics if your input is ill-conditioned. */ | |
252b5132 | 4152 | if (input_line_pointer[0] == '0' |
3882b010 | 4153 | && ISALPHA (input_line_pointer[1])) |
252b5132 RH |
4154 | input_line_pointer += 2; |
4155 | ||
4156 | /* Accept :xxxx, where the x's are hex digits, for a floating | |
4157 | point with the exact digits specified. */ | |
4158 | if (input_line_pointer[0] == ':') | |
4159 | { | |
4160 | ++input_line_pointer; | |
4161 | length = hex_float (float_type, temp); | |
4162 | if (length < 0) | |
4163 | { | |
4164 | ignore_rest_of_line (); | |
4165 | return; | |
4166 | } | |
4167 | } | |
4168 | else | |
4169 | { | |
4170 | err = md_atof (float_type, temp, &length); | |
4171 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
4172 | know (length > 0); | |
4173 | if (err) | |
4174 | { | |
0e389e77 | 4175 | as_bad (_("bad floating literal: %s"), err); |
252b5132 RH |
4176 | ignore_rest_of_line (); |
4177 | return; | |
4178 | } | |
4179 | } | |
4180 | ||
4181 | if (!need_pass_2) | |
4182 | { | |
4183 | int count; | |
4184 | ||
4185 | count = 1; | |
4186 | ||
4187 | #ifdef REPEAT_CONS_EXPRESSIONS | |
4188 | if (*input_line_pointer == ':') | |
4189 | { | |
4190 | expressionS count_exp; | |
4191 | ||
4192 | ++input_line_pointer; | |
4193 | expression (&count_exp); | |
f0e652b4 | 4194 | |
252b5132 RH |
4195 | if (count_exp.X_op != O_constant |
4196 | || count_exp.X_add_number <= 0) | |
041ff4dd | 4197 | as_warn (_("unresolvable or nonpositive repeat count; using 1")); |
252b5132 RH |
4198 | else |
4199 | count = count_exp.X_add_number; | |
4200 | } | |
4201 | #endif | |
4202 | ||
4203 | while (--count >= 0) | |
4204 | { | |
4205 | p = frag_more (length); | |
4206 | memcpy (p, temp, (unsigned int) length); | |
4207 | } | |
4208 | } | |
4209 | SKIP_WHITESPACE (); | |
4210 | } | |
4211 | while (*input_line_pointer++ == ','); | |
4212 | ||
041ff4dd NC |
4213 | /* Put terminator back into stream. */ |
4214 | --input_line_pointer; | |
252b5132 | 4215 | demand_empty_rest_of_line (); |
041ff4dd | 4216 | } |
252b5132 | 4217 | \f |
041ff4dd | 4218 | /* Return the size of a LEB128 value. */ |
252b5132 RH |
4219 | |
4220 | static inline int | |
4221 | sizeof_sleb128 (value) | |
4222 | offsetT value; | |
4223 | { | |
4224 | register int size = 0; | |
4225 | register unsigned byte; | |
4226 | ||
4227 | do | |
4228 | { | |
4229 | byte = (value & 0x7f); | |
4230 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4231 | Fortunately, we can structure things so that the extra work reduces | |
4232 | to a noop on systems that do things "properly". */ | |
4233 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4234 | size += 1; | |
4235 | } | |
4236 | while (!(((value == 0) && ((byte & 0x40) == 0)) | |
4237 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4238 | ||
4239 | return size; | |
4240 | } | |
4241 | ||
4242 | static inline int | |
4243 | sizeof_uleb128 (value) | |
4244 | valueT value; | |
4245 | { | |
4246 | register int size = 0; | |
4247 | register unsigned byte; | |
4248 | ||
4249 | do | |
4250 | { | |
4251 | byte = (value & 0x7f); | |
4252 | value >>= 7; | |
4253 | size += 1; | |
4254 | } | |
4255 | while (value != 0); | |
4256 | ||
4257 | return size; | |
4258 | } | |
4259 | ||
4260 | int | |
4261 | sizeof_leb128 (value, sign) | |
4262 | valueT value; | |
4263 | int sign; | |
4264 | { | |
4265 | if (sign) | |
4266 | return sizeof_sleb128 ((offsetT) value); | |
4267 | else | |
4268 | return sizeof_uleb128 (value); | |
4269 | } | |
4270 | ||
4271 | /* Output a LEB128 value. */ | |
4272 | ||
4273 | static inline int | |
4274 | output_sleb128 (p, value) | |
4275 | char *p; | |
4276 | offsetT value; | |
4277 | { | |
4278 | register char *orig = p; | |
4279 | register int more; | |
4280 | ||
4281 | do | |
4282 | { | |
4283 | unsigned byte = (value & 0x7f); | |
4284 | ||
4285 | /* Sadly, we cannot rely on typical arithmetic right shift behaviour. | |
4286 | Fortunately, we can structure things so that the extra work reduces | |
4287 | to a noop on systems that do things "properly". */ | |
4288 | value = (value >> 7) | ~(-(offsetT)1 >> 7); | |
4289 | ||
4290 | more = !((((value == 0) && ((byte & 0x40) == 0)) | |
4291 | || ((value == -1) && ((byte & 0x40) != 0)))); | |
4292 | if (more) | |
4293 | byte |= 0x80; | |
4294 | ||
4295 | *p++ = byte; | |
4296 | } | |
4297 | while (more); | |
4298 | ||
4299 | return p - orig; | |
4300 | } | |
4301 | ||
4302 | static inline int | |
4303 | output_uleb128 (p, value) | |
4304 | char *p; | |
4305 | valueT value; | |
4306 | { | |
4307 | char *orig = p; | |
4308 | ||
4309 | do | |
4310 | { | |
4311 | unsigned byte = (value & 0x7f); | |
4312 | value >>= 7; | |
4313 | if (value != 0) | |
4314 | /* More bytes to follow. */ | |
4315 | byte |= 0x80; | |
4316 | ||
4317 | *p++ = byte; | |
4318 | } | |
4319 | while (value != 0); | |
4320 | ||
4321 | return p - orig; | |
4322 | } | |
4323 | ||
4324 | int | |
4325 | output_leb128 (p, value, sign) | |
4326 | char *p; | |
4327 | valueT value; | |
4328 | int sign; | |
4329 | { | |
4330 | if (sign) | |
4331 | return output_sleb128 (p, (offsetT) value); | |
4332 | else | |
4333 | return output_uleb128 (p, value); | |
4334 | } | |
4335 | ||
4336 | /* Do the same for bignums. We combine sizeof with output here in that | |
4337 | we don't output for NULL values of P. It isn't really as critical as | |
4338 | for "normal" values that this be streamlined. */ | |
4339 | ||
6d4d30bb | 4340 | static inline int |
252b5132 RH |
4341 | output_big_sleb128 (p, bignum, size) |
4342 | char *p; | |
4343 | LITTLENUM_TYPE *bignum; | |
4344 | int size; | |
4345 | { | |
4346 | char *orig = p; | |
4347 | valueT val = 0; | |
4348 | int loaded = 0; | |
4349 | unsigned byte; | |
4350 | ||
4351 | /* Strip leading sign extensions off the bignum. */ | |
041ff4dd | 4352 | while (size > 0 && bignum[size - 1] == (LITTLENUM_TYPE) -1) |
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) | |
4370 | { | |
4371 | if ((val == 0 && (byte & 0x40) == 0) | |
041ff4dd | 4372 | || (~(val | ~(((valueT) 1 << loaded) - 1)) == 0 |
252b5132 RH |
4373 | && (byte & 0x40) != 0)) |
4374 | byte |= 0x80; | |
4375 | } | |
4376 | ||
4377 | if (orig) | |
4378 | *p = byte; | |
4379 | p++; | |
4380 | } | |
4381 | while (byte & 0x80); | |
4382 | ||
4383 | return p - orig; | |
4384 | } | |
4385 | ||
6d4d30bb | 4386 | static inline int |
252b5132 RH |
4387 | output_big_uleb128 (p, bignum, size) |
4388 | char *p; | |
4389 | LITTLENUM_TYPE *bignum; | |
4390 | int size; | |
4391 | { | |
4392 | char *orig = p; | |
4393 | valueT val = 0; | |
4394 | int loaded = 0; | |
4395 | unsigned byte; | |
4396 | ||
4397 | /* Strip leading zeros off the bignum. */ | |
4398 | /* XXX: Is this needed? */ | |
041ff4dd | 4399 | while (size > 0 && bignum[size - 1] == 0) |
252b5132 RH |
4400 | size--; |
4401 | ||
4402 | do | |
4403 | { | |
4404 | if (loaded < 7 && size > 0) | |
4405 | { | |
4406 | val |= (*bignum << loaded); | |
4407 | loaded += 8 * CHARS_PER_LITTLENUM; | |
4408 | size--; | |
4409 | bignum++; | |
4410 | } | |
4411 | ||
4412 | byte = val & 0x7f; | |
4413 | loaded -= 7; | |
4414 | val >>= 7; | |
4415 | ||
4416 | if (size > 0 || val) | |
4417 | byte |= 0x80; | |
4418 | ||
4419 | if (orig) | |
4420 | *p = byte; | |
4421 | p++; | |
4422 | } | |
4423 | while (byte & 0x80); | |
4424 | ||
4425 | return p - orig; | |
4426 | } | |
4427 | ||
6d4d30bb | 4428 | static int |
252b5132 RH |
4429 | output_big_leb128 (p, bignum, size, sign) |
4430 | char *p; | |
4431 | LITTLENUM_TYPE *bignum; | |
4432 | int size, sign; | |
4433 | { | |
4434 | if (sign) | |
4435 | return output_big_sleb128 (p, bignum, size); | |
4436 | else | |
4437 | return output_big_uleb128 (p, bignum, size); | |
4438 | } | |
4439 | ||
4440 | /* Generate the appropriate fragments for a given expression to emit a | |
4441 | leb128 value. */ | |
4442 | ||
4443 | void | |
041ff4dd | 4444 | emit_leb128_expr (exp, sign) |
252b5132 RH |
4445 | expressionS *exp; |
4446 | int sign; | |
4447 | { | |
4448 | operatorT op = exp->X_op; | |
67a659f6 | 4449 | int nbytes; |
252b5132 RH |
4450 | |
4451 | if (op == O_absent || op == O_illegal) | |
4452 | { | |
4453 | as_warn (_("zero assumed for missing expression")); | |
4454 | exp->X_add_number = 0; | |
4455 | op = O_constant; | |
4456 | } | |
4457 | else if (op == O_big && exp->X_add_number <= 0) | |
4458 | { | |
0e389e77 | 4459 | as_bad (_("floating point number invalid")); |
252b5132 RH |
4460 | exp->X_add_number = 0; |
4461 | op = O_constant; | |
4462 | } | |
4463 | else if (op == O_register) | |
4464 | { | |
4465 | as_warn (_("register value used as expression")); | |
4466 | op = O_constant; | |
4467 | } | |
4468 | ||
67a659f6 RH |
4469 | /* Let check_eh_frame know that data is being emitted. nbytes == -1 is |
4470 | a signal that this is leb128 data. It shouldn't optimize this away. */ | |
4471 | nbytes = -1; | |
4472 | if (check_eh_frame (exp, &nbytes)) | |
4473 | abort (); | |
4474 | ||
371b7465 RH |
4475 | /* Let the backend know that subsequent data may be byte aligned. */ |
4476 | #ifdef md_cons_align | |
4477 | md_cons_align (1); | |
4478 | #endif | |
4479 | ||
252b5132 RH |
4480 | if (op == O_constant) |
4481 | { | |
4482 | /* If we've got a constant, emit the thing directly right now. */ | |
4483 | ||
4484 | valueT value = exp->X_add_number; | |
4485 | int size; | |
4486 | char *p; | |
4487 | ||
4488 | size = sizeof_leb128 (value, sign); | |
4489 | p = frag_more (size); | |
4490 | output_leb128 (p, value, sign); | |
4491 | } | |
4492 | else if (op == O_big) | |
4493 | { | |
4494 | /* O_big is a different sort of constant. */ | |
4495 | ||
4496 | int size; | |
4497 | char *p; | |
4498 | ||
4499 | size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign); | |
4500 | p = frag_more (size); | |
4501 | output_big_leb128 (p, generic_bignum, exp->X_add_number, sign); | |
4502 | } | |
4503 | else | |
4504 | { | |
041ff4dd | 4505 | /* Otherwise, we have to create a variable sized fragment and |
252b5132 RH |
4506 | resolve things later. */ |
4507 | ||
041ff4dd | 4508 | frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign, |
252b5132 RH |
4509 | make_expr_symbol (exp), 0, (char *) NULL); |
4510 | } | |
4511 | } | |
4512 | ||
4513 | /* Parse the .sleb128 and .uleb128 pseudos. */ | |
4514 | ||
4515 | void | |
4516 | s_leb128 (sign) | |
4517 | int sign; | |
4518 | { | |
4519 | expressionS exp; | |
4520 | ||
041ff4dd NC |
4521 | do |
4522 | { | |
4523 | expression (&exp); | |
4524 | emit_leb128_expr (&exp, sign); | |
4525 | } | |
4526 | while (*input_line_pointer++ == ','); | |
252b5132 RH |
4527 | |
4528 | input_line_pointer--; | |
4529 | demand_empty_rest_of_line (); | |
4530 | } | |
4531 | \f | |
041ff4dd NC |
4532 | /* We read 0 or more ',' separated, double-quoted strings. |
4533 | Caller should have checked need_pass_2 is FALSE because we don't | |
4534 | check it. */ | |
4535 | ||
4536 | void | |
4537 | stringer (append_zero) /* Worker to do .ascii etc statements. */ | |
4538 | /* Checks end-of-line. */ | |
4539 | register int append_zero; /* 0: don't append '\0', else 1. */ | |
252b5132 RH |
4540 | { |
4541 | register unsigned int c; | |
4542 | char *start; | |
4543 | ||
4544 | #ifdef md_flush_pending_output | |
4545 | md_flush_pending_output (); | |
4546 | #endif | |
4547 | ||
041ff4dd NC |
4548 | /* The following awkward logic is to parse ZERO or more strings, |
4549 | comma separated. Recall a string expression includes spaces | |
4550 | before the opening '\"' and spaces after the closing '\"'. | |
4551 | We fake a leading ',' if there is (supposed to be) | |
4552 | a 1st, expression. We keep demanding expressions for each ','. */ | |
252b5132 RH |
4553 | if (is_it_end_of_statement ()) |
4554 | { | |
041ff4dd NC |
4555 | c = 0; /* Skip loop. */ |
4556 | ++input_line_pointer; /* Compensate for end of loop. */ | |
252b5132 RH |
4557 | } |
4558 | else | |
4559 | { | |
041ff4dd | 4560 | c = ','; /* Do loop. */ |
252b5132 RH |
4561 | } |
4562 | while (c == ',' || c == '<' || c == '"') | |
4563 | { | |
4564 | SKIP_WHITESPACE (); | |
4565 | switch (*input_line_pointer) | |
4566 | { | |
4567 | case '\"': | |
041ff4dd | 4568 | ++input_line_pointer; /*->1st char of string. */ |
252b5132 RH |
4569 | start = input_line_pointer; |
4570 | while (is_a_char (c = next_char_of_string ())) | |
4571 | { | |
4572 | FRAG_APPEND_1_CHAR (c); | |
4573 | } | |
4574 | if (append_zero) | |
4575 | { | |
4576 | FRAG_APPEND_1_CHAR (0); | |
4577 | } | |
4578 | know (input_line_pointer[-1] == '\"'); | |
4579 | ||
4580 | #ifndef NO_LISTING | |
4581 | #ifdef OBJ_ELF | |
4582 | /* In ELF, when gcc is emitting DWARF 1 debugging output, it | |
4583 | will emit .string with a filename in the .debug section | |
4584 | after a sequence of constants. See the comment in | |
4585 | emit_expr for the sequence. emit_expr will set | |
4586 | dwarf_file_string to non-zero if this string might be a | |
4587 | source file name. */ | |
4588 | if (strcmp (segment_name (now_seg), ".debug") != 0) | |
4589 | dwarf_file_string = 0; | |
4590 | else if (dwarf_file_string) | |
4591 | { | |
4592 | c = input_line_pointer[-1]; | |
4593 | input_line_pointer[-1] = '\0'; | |
4594 | listing_source_file (start); | |
4595 | input_line_pointer[-1] = c; | |
4596 | } | |
4597 | #endif | |
4598 | #endif | |
4599 | ||
4600 | break; | |
4601 | case '<': | |
4602 | input_line_pointer++; | |
4603 | c = get_single_number (); | |
4604 | FRAG_APPEND_1_CHAR (c); | |
4605 | if (*input_line_pointer != '>') | |
4606 | { | |
0e389e77 | 4607 | as_bad (_("expected <nn>")); |
252b5132 RH |
4608 | } |
4609 | input_line_pointer++; | |
4610 | break; | |
4611 | case ',': | |
4612 | input_line_pointer++; | |
4613 | break; | |
4614 | } | |
4615 | SKIP_WHITESPACE (); | |
4616 | c = *input_line_pointer; | |
4617 | } | |
4618 | ||
4619 | demand_empty_rest_of_line (); | |
4620 | } /* stringer() */ | |
4621 | \f | |
4622 | /* FIXME-SOMEDAY: I had trouble here on characters with the | |
4623 | high bits set. We'll probably also have trouble with | |
4624 | multibyte chars, wide chars, etc. Also be careful about | |
041ff4dd | 4625 | returning values bigger than 1 byte. xoxorich. */ |
252b5132 | 4626 | |
041ff4dd | 4627 | unsigned int |
252b5132 RH |
4628 | next_char_of_string () |
4629 | { | |
4630 | register unsigned int c; | |
4631 | ||
4632 | c = *input_line_pointer++ & CHAR_MASK; | |
4633 | switch (c) | |
4634 | { | |
4635 | case '\"': | |
4636 | c = NOT_A_CHAR; | |
4637 | break; | |
4638 | ||
4639 | case '\n': | |
0e389e77 | 4640 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4641 | bump_line_counters (); |
4642 | break; | |
4643 | ||
4644 | #ifndef NO_STRING_ESCAPES | |
4645 | case '\\': | |
4646 | switch (c = *input_line_pointer++) | |
4647 | { | |
4648 | case 'b': | |
4649 | c = '\b'; | |
4650 | break; | |
4651 | ||
4652 | case 'f': | |
4653 | c = '\f'; | |
4654 | break; | |
4655 | ||
4656 | case 'n': | |
4657 | c = '\n'; | |
4658 | break; | |
4659 | ||
4660 | case 'r': | |
4661 | c = '\r'; | |
4662 | break; | |
4663 | ||
4664 | case 't': | |
4665 | c = '\t'; | |
4666 | break; | |
4667 | ||
4668 | case 'v': | |
4669 | c = '\013'; | |
4670 | break; | |
4671 | ||
4672 | case '\\': | |
4673 | case '"': | |
041ff4dd | 4674 | break; /* As itself. */ |
252b5132 RH |
4675 | |
4676 | case '0': | |
4677 | case '1': | |
4678 | case '2': | |
4679 | case '3': | |
4680 | case '4': | |
4681 | case '5': | |
4682 | case '6': | |
4683 | case '7': | |
4684 | case '8': | |
4685 | case '9': | |
4686 | { | |
4687 | long number; | |
4688 | int i; | |
4689 | ||
041ff4dd | 4690 | for (i = 0, number = 0; |
3882b010 | 4691 | ISDIGIT (c) && i < 3; |
041ff4dd | 4692 | c = *input_line_pointer++, i++) |
252b5132 RH |
4693 | { |
4694 | number = number * 8 + c - '0'; | |
4695 | } | |
f0e652b4 | 4696 | |
252b5132 RH |
4697 | c = number & 0xff; |
4698 | } | |
4699 | --input_line_pointer; | |
4700 | break; | |
4701 | ||
4702 | case 'x': | |
4703 | case 'X': | |
4704 | { | |
4705 | long number; | |
4706 | ||
4707 | number = 0; | |
4708 | c = *input_line_pointer++; | |
3882b010 | 4709 | while (ISXDIGIT (c)) |
252b5132 | 4710 | { |
3882b010 | 4711 | if (ISDIGIT (c)) |
252b5132 | 4712 | number = number * 16 + c - '0'; |
3882b010 | 4713 | else if (ISUPPER (c)) |
252b5132 RH |
4714 | number = number * 16 + c - 'A' + 10; |
4715 | else | |
4716 | number = number * 16 + c - 'a' + 10; | |
4717 | c = *input_line_pointer++; | |
4718 | } | |
4719 | c = number & 0xff; | |
4720 | --input_line_pointer; | |
4721 | } | |
4722 | break; | |
4723 | ||
4724 | case '\n': | |
041ff4dd | 4725 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ |
0e389e77 | 4726 | as_warn (_("unterminated string; newline inserted")); |
252b5132 RH |
4727 | c = '\n'; |
4728 | bump_line_counters (); | |
4729 | break; | |
4730 | ||
4731 | default: | |
4732 | ||
4733 | #ifdef ONLY_STANDARD_ESCAPES | |
0e389e77 | 4734 | as_bad (_("bad escaped character in string")); |
252b5132 RH |
4735 | c = '?'; |
4736 | #endif /* ONLY_STANDARD_ESCAPES */ | |
4737 | ||
4738 | break; | |
041ff4dd | 4739 | } |
252b5132 RH |
4740 | break; |
4741 | #endif /* ! defined (NO_STRING_ESCAPES) */ | |
4742 | ||
4743 | default: | |
4744 | break; | |
041ff4dd | 4745 | } |
252b5132 | 4746 | return (c); |
041ff4dd | 4747 | } |
252b5132 RH |
4748 | \f |
4749 | static segT | |
4750 | get_segmented_expression (expP) | |
4751 | register expressionS *expP; | |
4752 | { | |
4753 | register segT retval; | |
4754 | ||
4755 | retval = expression (expP); | |
4756 | if (expP->X_op == O_illegal | |
4757 | || expP->X_op == O_absent | |
4758 | || expP->X_op == O_big) | |
4759 | { | |
0e389e77 | 4760 | as_bad (_("expected address expression")); |
252b5132 RH |
4761 | expP->X_op = O_constant; |
4762 | expP->X_add_number = 0; | |
4763 | retval = absolute_section; | |
4764 | } | |
4765 | return retval; | |
4766 | } | |
4767 | ||
041ff4dd | 4768 | static segT |
252b5132 RH |
4769 | get_known_segmented_expression (expP) |
4770 | register expressionS *expP; | |
4771 | { | |
4772 | register segT retval; | |
4773 | ||
4774 | if ((retval = get_segmented_expression (expP)) == undefined_section) | |
4775 | { | |
4776 | /* There is no easy way to extract the undefined symbol from the | |
4777 | expression. */ | |
4778 | if (expP->X_add_symbol != NULL | |
4779 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
4780 | as_warn (_("symbol \"%s\" undefined; zero assumed"), | |
4781 | S_GET_NAME (expP->X_add_symbol)); | |
4782 | else | |
4783 | as_warn (_("some symbol undefined; zero assumed")); | |
4784 | retval = absolute_section; | |
4785 | expP->X_op = O_constant; | |
4786 | expP->X_add_number = 0; | |
4787 | } | |
4788 | know (retval == absolute_section || SEG_NORMAL (retval)); | |
4789 | return (retval); | |
041ff4dd | 4790 | } |
252b5132 RH |
4791 | |
4792 | offsetT | |
4793 | get_absolute_expression () | |
4794 | { | |
4795 | expressionS exp; | |
4796 | ||
4797 | expression (&exp); | |
4798 | if (exp.X_op != O_constant) | |
4799 | { | |
4800 | if (exp.X_op != O_absent) | |
0e389e77 | 4801 | as_bad (_("bad or irreducible absolute expression")); |
252b5132 RH |
4802 | exp.X_add_number = 0; |
4803 | } | |
4804 | return exp.X_add_number; | |
4805 | } | |
4806 | ||
041ff4dd | 4807 | char /* Return terminator. */ |
252b5132 | 4808 | get_absolute_expression_and_terminator (val_pointer) |
041ff4dd | 4809 | long *val_pointer; /* Return value of expression. */ |
252b5132 RH |
4810 | { |
4811 | /* FIXME: val_pointer should probably be offsetT *. */ | |
4812 | *val_pointer = (long) get_absolute_expression (); | |
4813 | return (*input_line_pointer++); | |
4814 | } | |
4815 | \f | |
041ff4dd NC |
4816 | /* Like demand_copy_string, but return NULL if the string contains any '\0's. |
4817 | Give a warning if that happens. */ | |
4818 | ||
252b5132 RH |
4819 | char * |
4820 | demand_copy_C_string (len_pointer) | |
4821 | int *len_pointer; | |
4822 | { | |
4823 | register char *s; | |
4824 | ||
4825 | if ((s = demand_copy_string (len_pointer)) != 0) | |
4826 | { | |
4827 | register int len; | |
4828 | ||
4829 | for (len = *len_pointer; len > 0; len--) | |
4830 | { | |
4831 | if (*s == 0) | |
4832 | { | |
4833 | s = 0; | |
4834 | len = 1; | |
4835 | *len_pointer = 0; | |
0e389e77 | 4836 | as_bad (_("this string may not contain \'\\0\'")); |
252b5132 RH |
4837 | } |
4838 | } | |
4839 | } | |
f0e652b4 | 4840 | |
252b5132 RH |
4841 | return s; |
4842 | } | |
4843 | \f | |
041ff4dd NC |
4844 | /* Demand string, but return a safe (=private) copy of the string. |
4845 | Return NULL if we can't read a string here. */ | |
4846 | ||
252b5132 RH |
4847 | char * |
4848 | demand_copy_string (lenP) | |
4849 | int *lenP; | |
4850 | { | |
4851 | register unsigned int c; | |
4852 | register int len; | |
4853 | char *retval; | |
4854 | ||
4855 | len = 0; | |
4856 | SKIP_WHITESPACE (); | |
4857 | if (*input_line_pointer == '\"') | |
4858 | { | |
041ff4dd | 4859 | input_line_pointer++; /* Skip opening quote. */ |
252b5132 RH |
4860 | |
4861 | while (is_a_char (c = next_char_of_string ())) | |
4862 | { | |
4863 | obstack_1grow (¬es, c); | |
4864 | len++; | |
4865 | } | |
4866 | /* JF this next line is so demand_copy_C_string will return a | |
041ff4dd | 4867 | null terminated string. */ |
252b5132 RH |
4868 | obstack_1grow (¬es, '\0'); |
4869 | retval = obstack_finish (¬es); | |
4870 | } | |
4871 | else | |
4872 | { | |
0e389e77 | 4873 | as_warn (_("missing string")); |
252b5132 RH |
4874 | retval = NULL; |
4875 | ignore_rest_of_line (); | |
4876 | } | |
4877 | *lenP = len; | |
4878 | return (retval); | |
041ff4dd | 4879 | } |
252b5132 | 4880 | \f |
041ff4dd | 4881 | /* In: Input_line_pointer->next character. |
f0e652b4 | 4882 | |
041ff4dd | 4883 | Do: Skip input_line_pointer over all whitespace. |
f0e652b4 | 4884 | |
041ff4dd NC |
4885 | Out: 1 if input_line_pointer->end-of-line. */ |
4886 | ||
4887 | int | |
252b5132 RH |
4888 | is_it_end_of_statement () |
4889 | { | |
4890 | SKIP_WHITESPACE (); | |
4891 | return (is_end_of_line[(unsigned char) *input_line_pointer]); | |
041ff4dd | 4892 | } |
252b5132 | 4893 | |
041ff4dd | 4894 | void |
252b5132 RH |
4895 | equals (sym_name, reassign) |
4896 | char *sym_name; | |
4897 | int reassign; | |
4898 | { | |
041ff4dd | 4899 | register symbolS *symbolP; /* Symbol we are working with. */ |
252b5132 RH |
4900 | char *stop = NULL; |
4901 | char stopc; | |
4902 | ||
4903 | input_line_pointer++; | |
4904 | if (*input_line_pointer == '=') | |
4905 | input_line_pointer++; | |
4906 | ||
4907 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') | |
4908 | input_line_pointer++; | |
4909 | ||
4910 | if (flag_mri) | |
4911 | stop = mri_comment_field (&stopc); | |
4912 | ||
4913 | if (sym_name[0] == '.' && sym_name[1] == '\0') | |
4914 | { | |
041ff4dd | 4915 | /* Turn '. = mumble' into a .org mumble. */ |
252b5132 RH |
4916 | register segT segment; |
4917 | expressionS exp; | |
4918 | ||
4919 | segment = get_known_segmented_expression (&exp); | |
4920 | if (!need_pass_2) | |
4921 | do_org (segment, &exp, 0); | |
4922 | } | |
4923 | else | |
4924 | { | |
440ecb38 L |
4925 | #ifdef OBJ_COFF |
4926 | int local; | |
4927 | ||
4928 | symbolP = symbol_find (sym_name); | |
4929 | local = symbolP == NULL; | |
4930 | if (local) | |
4931 | #endif /* OBJ_COFF */ | |
252b5132 RH |
4932 | symbolP = symbol_find_or_make (sym_name); |
4933 | /* Permit register names to be redefined. */ | |
041ff4dd | 4934 | if (!reassign |
252b5132 RH |
4935 | && S_IS_DEFINED (symbolP) |
4936 | && S_GET_SEGMENT (symbolP) != reg_section) | |
0e389e77 | 4937 | as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP)); |
775cf891 NC |
4938 | |
4939 | #ifdef OBJ_COFF | |
4940 | /* "set" symbols are local unless otherwise specified. */ | |
440ecb38 L |
4941 | if (local) |
4942 | SF_SET_LOCAL (symbolP); | |
775cf891 NC |
4943 | #endif /* OBJ_COFF */ |
4944 | ||
252b5132 RH |
4945 | pseudo_set (symbolP); |
4946 | } | |
4947 | ||
4948 | if (flag_mri) | |
041ff4dd NC |
4949 | { |
4950 | /* Check garbage after the expression. */ | |
4951 | ignore_rest_of_line (); | |
4952 | mri_comment_end (stop, stopc); | |
4953 | } | |
4954 | } | |
252b5132 | 4955 | |
7e005732 NC |
4956 | /* .incbin -- include a file verbatim at the current location. */ |
4957 | ||
4958 | void | |
4959 | s_incbin (x) | |
4960 | int x ATTRIBUTE_UNUSED; | |
4961 | { | |
4962 | FILE * binfile; | |
4963 | char * path; | |
4964 | char * filename; | |
4965 | char * binfrag; | |
4966 | long skip = 0; | |
4967 | long count = 0; | |
4968 | long bytes; | |
4969 | int len; | |
4970 | ||
4971 | #ifdef md_flush_pending_output | |
4972 | md_flush_pending_output (); | |
4973 | #endif | |
4974 | ||
4975 | SKIP_WHITESPACE (); | |
4976 | filename = demand_copy_string (& len); | |
4977 | if (filename == NULL) | |
4978 | return; | |
4979 | ||
4980 | SKIP_WHITESPACE (); | |
4981 | ||
4982 | /* Look for optional skip and count. */ | |
4983 | if (* input_line_pointer == ',') | |
4984 | { | |
4985 | ++ input_line_pointer; | |
4986 | skip = get_absolute_expression (); | |
4987 | ||
4988 | SKIP_WHITESPACE (); | |
4989 | ||
4990 | if (* input_line_pointer == ',') | |
4991 | { | |
4992 | ++ input_line_pointer; | |
4993 | ||
4994 | count = get_absolute_expression (); | |
4995 | if (count == 0) | |
4996 | as_warn (_(".incbin count zero, ignoring `%s'"), filename); | |
4997 | ||
4998 | SKIP_WHITESPACE (); | |
4999 | } | |
5000 | } | |
5001 | ||
5002 | demand_empty_rest_of_line (); | |
5003 | ||
5004 | /* Try opening absolute path first, then try include dirs. */ | |
f740e790 | 5005 | binfile = fopen (filename, FOPEN_RB); |
7e005732 NC |
5006 | if (binfile == NULL) |
5007 | { | |
5008 | int i; | |
5009 | ||
5010 | path = xmalloc ((unsigned long) len + include_dir_maxlen + 5); | |
5011 | ||
5012 | for (i = 0; i < include_dir_count; i++) | |
5013 | { | |
5014 | sprintf (path, "%s/%s", include_dirs[i], filename); | |
5015 | ||
f740e790 | 5016 | binfile = fopen (path, FOPEN_RB); |
7e005732 NC |
5017 | if (binfile != NULL) |
5018 | break; | |
5019 | } | |
5020 | ||
5021 | if (binfile == NULL) | |
5022 | as_bad (_("file not found: %s"), filename); | |
5023 | } | |
5024 | else | |
5025 | path = xstrdup (filename); | |
5026 | ||
5027 | if (binfile) | |
5028 | { | |
f740e790 NC |
5029 | long file_len; |
5030 | ||
7e005732 NC |
5031 | register_dependency (path); |
5032 | ||
5033 | /* Compute the length of the file. */ | |
5034 | if (fseek (binfile, 0, SEEK_END) != 0) | |
5035 | { | |
5036 | as_bad (_("seek to end of .incbin file failed `%s'"), path); | |
5037 | goto done; | |
5038 | } | |
f740e790 | 5039 | file_len = ftell (binfile); |
7e005732 NC |
5040 | |
5041 | /* If a count was not specified use the size of the file. */ | |
5042 | if (count == 0) | |
f740e790 | 5043 | count = file_len; |
7e005732 | 5044 | |
f740e790 | 5045 | if (skip + count > file_len) |
7e005732 NC |
5046 | { |
5047 | as_bad (_("skip (%ld) + count (%ld) larger than file size (%ld)"), | |
f740e790 | 5048 | skip, count, file_len); |
7e005732 NC |
5049 | goto done; |
5050 | } | |
5051 | ||
5052 | if (fseek (binfile, skip, SEEK_SET) != 0) | |
5053 | { | |
5054 | as_bad (_("could not skip to %ld in file `%s'"), skip, path); | |
5055 | goto done; | |
5056 | } | |
5057 | ||
5058 | /* Allocate frag space and store file contents in it. */ | |
5059 | binfrag = frag_more (count); | |
5060 | ||
5061 | bytes = fread (binfrag, 1, count, binfile); | |
5062 | if (bytes < count) | |
5063 | as_warn (_("truncated file `%s', %ld of %ld bytes read"), | |
5064 | path, bytes, count); | |
5065 | } | |
5066 | done: | |
5067 | if (binfile != NULL) | |
5068 | fclose (binfile); | |
5069 | if (path) | |
5070 | free (path); | |
5071 | } | |
5072 | ||
041ff4dd | 5073 | /* .include -- include a file at this point. */ |
252b5132 | 5074 | |
041ff4dd | 5075 | void |
252b5132 | 5076 | s_include (arg) |
ab9da554 | 5077 | int arg ATTRIBUTE_UNUSED; |
252b5132 | 5078 | { |
252b5132 RH |
5079 | char *filename; |
5080 | int i; | |
5081 | FILE *try; | |
5082 | char *path; | |
5083 | ||
041ff4dd | 5084 | if (!flag_m68k_mri) |
252b5132 RH |
5085 | { |
5086 | filename = demand_copy_string (&i); | |
5087 | if (filename == NULL) | |
5088 | { | |
5089 | /* demand_copy_string has already printed an error and | |
5090 | called ignore_rest_of_line. */ | |
5091 | return; | |
5092 | } | |
5093 | } | |
5094 | else | |
5095 | { | |
5096 | SKIP_WHITESPACE (); | |
5097 | i = 0; | |
041ff4dd | 5098 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
252b5132 RH |
5099 | && *input_line_pointer != ' ' |
5100 | && *input_line_pointer != '\t') | |
5101 | { | |
5102 | obstack_1grow (¬es, *input_line_pointer); | |
5103 | ++input_line_pointer; | |
5104 | ++i; | |
5105 | } | |
f0e652b4 | 5106 | |
252b5132 RH |
5107 | obstack_1grow (¬es, '\0'); |
5108 | filename = obstack_finish (¬es); | |
041ff4dd | 5109 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
252b5132 RH |
5110 | ++input_line_pointer; |
5111 | } | |
f0e652b4 | 5112 | |
252b5132 RH |
5113 | demand_empty_rest_of_line (); |
5114 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); | |
f0e652b4 | 5115 | |
252b5132 RH |
5116 | for (i = 0; i < include_dir_count; i++) |
5117 | { | |
5118 | strcpy (path, include_dirs[i]); | |
5119 | strcat (path, "/"); | |
5120 | strcat (path, filename); | |
f740e790 | 5121 | if (0 != (try = fopen (path, FOPEN_RT))) |
252b5132 RH |
5122 | { |
5123 | fclose (try); | |
5124 | goto gotit; | |
5125 | } | |
5126 | } | |
f0e652b4 | 5127 | |
252b5132 RH |
5128 | free (path); |
5129 | path = filename; | |
5130 | gotit: | |
041ff4dd | 5131 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ |
252b5132 | 5132 | register_dependency (path); |
9f10757c | 5133 | input_scrub_insert_file (path); |
041ff4dd | 5134 | } |
252b5132 | 5135 | |
041ff4dd | 5136 | void |
252b5132 RH |
5137 | add_include_dir (path) |
5138 | char *path; | |
5139 | { | |
5140 | int i; | |
5141 | ||
5142 | if (include_dir_count == 0) | |
5143 | { | |
5144 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); | |
041ff4dd | 5145 | include_dirs[0] = "."; /* Current dir. */ |
252b5132 RH |
5146 | include_dir_count = 2; |
5147 | } | |
5148 | else | |
5149 | { | |
5150 | include_dir_count++; | |
041ff4dd NC |
5151 | include_dirs = |
5152 | (char **) realloc (include_dirs, | |
5153 | include_dir_count * sizeof (*include_dirs)); | |
252b5132 RH |
5154 | } |
5155 | ||
041ff4dd | 5156 | include_dirs[include_dir_count - 1] = path; /* New one. */ |
252b5132 RH |
5157 | |
5158 | i = strlen (path); | |
5159 | if (i > include_dir_maxlen) | |
5160 | include_dir_maxlen = i; | |
041ff4dd | 5161 | } |
252b5132 RH |
5162 | \f |
5163 | /* Output debugging information to denote the source file. */ | |
5164 | ||
5165 | static void | |
5166 | generate_file_debug () | |
5167 | { | |
5168 | if (debug_type == DEBUG_STABS) | |
5169 | stabs_generate_asm_file (); | |
5170 | } | |
5171 | ||
5172 | /* Output line number debugging information for the current source line. */ | |
5173 | ||
5174 | void | |
5175 | generate_lineno_debug () | |
5176 | { | |
252b5132 RH |
5177 | switch (debug_type) |
5178 | { | |
5179 | case DEBUG_UNSPECIFIED: | |
5180 | case DEBUG_NONE: | |
4dc7ead9 | 5181 | case DEBUG_DWARF: |
252b5132 RH |
5182 | break; |
5183 | case DEBUG_STABS: | |
5184 | stabs_generate_asm_lineno (); | |
5185 | break; | |
5186 | case DEBUG_ECOFF: | |
5187 | ecoff_generate_asm_lineno (); | |
5188 | break; | |
252b5132 | 5189 | case DEBUG_DWARF2: |
4dc7ead9 RH |
5190 | /* ??? We could here indicate to dwarf2dbg.c that something |
5191 | has changed. However, since there is additional backend | |
5192 | support that is required (calling dwarf2_emit_insn), we | |
5193 | let dwarf2dbg.c call as_where on its own. */ | |
252b5132 RH |
5194 | break; |
5195 | } | |
5196 | } | |
5197 | ||
5198 | /* Output debugging information to mark a function entry point or end point. | |
5199 | END_P is zero for .func, and non-zero for .endfunc. */ | |
5200 | ||
5201 | void | |
5202 | s_func (end_p) | |
5203 | int end_p; | |
5204 | { | |
5205 | do_s_func (end_p, NULL); | |
5206 | } | |
5207 | ||
5208 | /* Subroutine of s_func so targets can choose a different default prefix. | |
5209 | If DEFAULT_PREFIX is NULL, use the target's "leading char". */ | |
5210 | ||
5211 | void | |
5212 | do_s_func (end_p, default_prefix) | |
5213 | int end_p; | |
5214 | const char *default_prefix; | |
5215 | { | |
5216 | /* Record the current function so that we can issue an error message for | |
5217 | misplaced .func,.endfunc, and also so that .endfunc needs no | |
5218 | arguments. */ | |
5219 | static char *current_name; | |
5220 | static char *current_label; | |
5221 | ||
5222 | if (end_p) | |
5223 | { | |
5224 | if (current_name == NULL) | |
5225 | { | |
5226 | as_bad (_("missing .func")); | |
5227 | ignore_rest_of_line (); | |
5228 | return; | |
5229 | } | |
5230 | ||
5231 | if (debug_type == DEBUG_STABS) | |
5232 | stabs_generate_asm_endfunc (current_name, current_label); | |
5233 | ||
5234 | current_name = current_label = NULL; | |
5235 | } | |
5236 | else /* ! end_p */ | |
5237 | { | |
041ff4dd NC |
5238 | char *name, *label; |
5239 | char delim1, delim2; | |
252b5132 RH |
5240 | |
5241 | if (current_name != NULL) | |
5242 | { | |
5243 | as_bad (_(".endfunc missing for previous .func")); | |
5244 | ignore_rest_of_line (); | |
5245 | return; | |
5246 | } | |
5247 | ||
5248 | name = input_line_pointer; | |
5249 | delim1 = get_symbol_end (); | |
5250 | name = xstrdup (name); | |
5251 | *input_line_pointer = delim1; | |
5252 | SKIP_WHITESPACE (); | |
5253 | if (*input_line_pointer != ',') | |
5254 | { | |
5255 | if (default_prefix) | |
5256 | asprintf (&label, "%s%s", default_prefix, name); | |
5257 | else | |
5258 | { | |
5259 | char leading_char = 0; | |
5260 | #ifdef BFD_ASSEMBLER | |
5261 | leading_char = bfd_get_symbol_leading_char (stdoutput); | |
5262 | #endif | |
5263 | /* Missing entry point, use function's name with the leading | |
5264 | char prepended. */ | |
5265 | if (leading_char) | |
5266 | asprintf (&label, "%c%s", leading_char, name); | |
5267 | else | |
5268 | label = name; | |
5269 | } | |
5270 | } | |
5271 | else | |
5272 | { | |
5273 | ++input_line_pointer; | |
5274 | SKIP_WHITESPACE (); | |
5275 | label = input_line_pointer; | |
5276 | delim2 = get_symbol_end (); | |
5277 | label = xstrdup (label); | |
5278 | *input_line_pointer = delim2; | |
5279 | } | |
5280 | ||
5281 | if (debug_type == DEBUG_STABS) | |
5282 | stabs_generate_asm_func (name, label); | |
5283 | ||
5284 | current_name = name; | |
5285 | current_label = label; | |
5286 | } | |
5287 | ||
5288 | demand_empty_rest_of_line (); | |
5289 | } | |
5290 | \f | |
041ff4dd | 5291 | void |
252b5132 | 5292 | s_ignore (arg) |
ab9da554 | 5293 | int arg ATTRIBUTE_UNUSED; |
252b5132 RH |
5294 | { |
5295 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
5296 | { | |
5297 | ++input_line_pointer; | |
5298 | } | |
5299 | ++input_line_pointer; | |
5300 | } | |
5301 | ||
252b5132 RH |
5302 | void |
5303 | read_print_statistics (file) | |
5304 | FILE *file; | |
5305 | { | |
5306 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
5307 | } | |
5308 | ||
041ff4dd NC |
5309 | /* Inserts the given line into the input stream. |
5310 | ||
9f10757c TW |
5311 | This call avoids macro/conditionals nesting checking, since the contents of |
5312 | the line are assumed to replace the contents of a line already scanned. | |
5313 | ||
5314 | An appropriate use of this function would be substition of input lines when | |
5315 | called by md_start_line_hook(). The given line is assumed to already be | |
5316 | properly scrubbed. */ | |
5317 | ||
5318 | void | |
5319 | input_scrub_insert_line (line) | |
041ff4dd | 5320 | const char *line; |
9f10757c TW |
5321 | { |
5322 | sb newline; | |
5323 | sb_new (&newline); | |
5324 | sb_add_string (&newline, line); | |
5325 | input_scrub_include_sb (&newline, input_line_pointer, 0); | |
5326 | sb_kill (&newline); | |
5327 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5328 | } | |
5329 | ||
5330 | /* Insert a file into the input stream; the path must resolve to an actual | |
041ff4dd | 5331 | file; no include path searching or dependency registering is performed. */ |
9f10757c TW |
5332 | |
5333 | void | |
5334 | input_scrub_insert_file (path) | |
041ff4dd | 5335 | char *path; |
9f10757c TW |
5336 | { |
5337 | input_scrub_include_file (path, input_line_pointer); | |
5338 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
5339 | } |