Commit | Line | Data |
---|---|---|
fecd2382 | 1 | /* read.c - read a source file - |
cef72a92 | 2 | Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 1996 |
ddb393cf | 3 | Free Software Foundation, Inc. |
3340f7e5 | 4 | |
f8701a3f SC |
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 | |
a2a5a4fa | 19 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
fecd2382 | 20 | |
016e0d42 | 21 | #if 0 |
fecd2382 RP |
22 | #define MASK_CHAR (0xFF) /* If your chars aren't 8 bits, you will |
23 | change this a bit. But then, GNU isn't | |
24 | spozed to run on your machine anyway. | |
25 | (RMS is so shortsighted sometimes.) | |
26 | */ | |
016e0d42 ILT |
27 | #else |
28 | #define MASK_CHAR ((int)(unsigned char)-1) | |
29 | #endif | |
fecd2382 | 30 | |
9a7d824a | 31 | |
9471a360 KR |
32 | /* This is the largest known floating point format (for now). It will |
33 | grow when we do 4361 style flonums. */ | |
fecd2382 | 34 | |
9471a360 | 35 | #define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16) |
fecd2382 | 36 | |
016e0d42 ILT |
37 | /* Routines that read assembler source text to build spagetti in memory. |
38 | Another group of these functions is in the expr.c module. */ | |
fecd2382 | 39 | |
9471a360 | 40 | /* for isdigit() */ |
6efd877d KR |
41 | #include <ctype.h> |
42 | ||
fecd2382 | 43 | #include "as.h" |
9471a360 | 44 | #include "subsegs.h" |
7e047ac2 ILT |
45 | #include "sb.h" |
46 | #include "macro.h" | |
1356d77d | 47 | #include "libiberty.h" |
fecd2382 | 48 | #include "obstack.h" |
9a7d824a ILT |
49 | #include "listing.h" |
50 | ||
9a7d824a ILT |
51 | #ifndef TC_START_LABEL |
52 | #define TC_START_LABEL(x,y) (x==':') | |
53 | #endif | |
fecd2382 | 54 | |
016e0d42 ILT |
55 | /* The NOP_OPCODE is for the alignment fill value. |
56 | * fill it a nop instruction so that the disassembler does not choke | |
57 | * on it | |
58 | */ | |
59 | #ifndef NOP_OPCODE | |
60 | #define NOP_OPCODE 0x00 | |
61 | #endif | |
62 | ||
63 | char *input_line_pointer; /*->next char of source file to parse. */ | |
fecd2382 | 64 | |
326d16ca | 65 | int generate_asm_lineno = 0; /* flag to generate line stab for .s file */ |
daad3bbf | 66 | |
fecd2382 | 67 | #if BITS_PER_CHAR != 8 |
6efd877d KR |
68 | /* The following table is indexed by[(char)] and will break if |
69 | a char does not have exactly 256 states (hopefully 0:255!)! */ | |
70 | die horribly; | |
fecd2382 | 71 | #endif |
f8701a3f | 72 | |
c978e704 ILT |
73 | #ifndef LEX_AT |
74 | /* The m88k unfortunately uses @ as a label beginner. */ | |
75 | #define LEX_AT 0 | |
76 | #endif | |
77 | ||
ddb393cf ILT |
78 | #ifndef LEX_BR |
79 | /* The RS/6000 assembler uses {,},[,] as parts of symbol names. */ | |
80 | #define LEX_BR 0 | |
81 | #endif | |
82 | ||
6ef37255 KR |
83 | #ifndef LEX_PCT |
84 | /* The Delta 68k assembler permits % inside label names. */ | |
85 | #define LEX_PCT 0 | |
86 | #endif | |
87 | ||
18c9057f ILT |
88 | #ifndef LEX_QM |
89 | /* The PowerPC Windows NT assemblers permits ? inside label names. */ | |
90 | #define LEX_QM 0 | |
91 | #endif | |
92 | ||
6594d6b9 KR |
93 | #ifndef LEX_DOLLAR |
94 | /* The a29k assembler does not permits labels to start with $. */ | |
95 | #define LEX_DOLLAR 3 | |
96 | #endif | |
97 | ||
016e0d42 | 98 | /* used by is_... macros. our ctype[] */ |
1356d77d | 99 | char lex_type[256] = |
016e0d42 ILT |
100 | { |
101 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */ | |
102 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */ | |
6594d6b9 | 103 | 0, 0, 0, 0, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */ |
18c9057f | 104 | 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */ |
c978e704 | 105 | LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */ |
ddb393cf | 106 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */ |
016e0d42 | 107 | 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */ |
ddb393cf | 108 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 0, /* pqrstuvwxyz{|}~. */ |
016e0d42 ILT |
109 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
110 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
111 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
112 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
113 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
114 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
115 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
116 | }; | |
117 | ||
118 | ||
119 | /* | |
fecd2382 RP |
120 | * In: a character. |
121 | * Out: 1 if this character ends a line. | |
122 | */ | |
123 | #define _ (0) | |
016e0d42 ILT |
124 | char is_end_of_line[256] = |
125 | { | |
fecd2382 | 126 | #ifdef CR_EOL |
016e0d42 | 127 | _, _, _, _, _, _, _, _, _, _, 99, _, _, 99, _, _, /* @abcdefghijklmno */ |
fecd2382 | 128 | #else |
016e0d42 | 129 | _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, _, /* @abcdefghijklmno */ |
fecd2382 | 130 | #endif |
016e0d42 | 131 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
40324362 KR |
132 | #ifdef TC_HPPA |
133 | _,99, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* _!"#$%&'()*+,-./ */ | |
134 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* 0123456789:;<=>? */ | |
135 | #else | |
016e0d42 ILT |
136 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
137 | _, _, _, _, _, _, _, _, _, _, _, 99, _, _, _, _, /* 0123456789:;<=>? */ | |
40324362 | 138 | #endif |
016e0d42 ILT |
139 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ |
140 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
141 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
142 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
143 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
144 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
145 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
146 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
147 | _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */ | |
148 | }; | |
fecd2382 RP |
149 | #undef _ |
150 | ||
016e0d42 ILT |
151 | /* Functions private to this file. */ |
152 | ||
153 | static char *buffer; /* 1st char of each buffer of lines is here. */ | |
154 | static char *buffer_limit; /*->1 + last char in buffer. */ | |
fecd2382 | 155 | |
2209b19c KR |
156 | #ifdef TARGET_BYTES_BIG_ENDIAN |
157 | /* Hack to deal with tc-*.h defining TARGET_BYTES_BIG_ENDIAN to empty | |
158 | instead of to 0 or 1. */ | |
159 | #if 5 - TARGET_BYTES_BIG_ENDIAN - 5 == 10 | |
160 | #undef TARGET_BYTES_BIG_ENDIAN | |
161 | #define TARGET_BYTES_BIG_ENDIAN 1 | |
162 | #endif | |
163 | int target_big_endian = TARGET_BYTES_BIG_ENDIAN; | |
164 | #else | |
165 | int target_big_endian /* = 0 */; | |
166 | #endif | |
9c6d3f66 | 167 | |
9471a360 | 168 | static char *old_buffer; /* JF a hack */ |
016e0d42 ILT |
169 | static char *old_input; |
170 | static char *old_limit; | |
fecd2382 | 171 | |
016e0d42 | 172 | /* Variables for handling include file directory list. */ |
fecd2382 | 173 | |
016e0d42 ILT |
174 | char **include_dirs; /* List of pointers to directories to |
175 | search for .include's */ | |
176 | int include_dir_count; /* How many are in the list */ | |
177 | int include_dir_maxlen = 1;/* Length of longest in list */ | |
fecd2382 RP |
178 | |
179 | #ifndef WORKING_DOT_WORD | |
016e0d42 | 180 | struct broken_word *broken_words; |
9471a360 | 181 | int new_broken_words; |
fecd2382 RP |
182 | #endif |
183 | ||
e28c40d7 ILT |
184 | /* The current offset into the absolute section. We don't try to |
185 | build frags in the absolute section, since no data can be stored | |
186 | there. We just keep track of the current offset. */ | |
187 | addressT abs_section_offset; | |
188 | ||
1356d77d ILT |
189 | /* If this line had an MRI style label, it is stored in this variable. |
190 | This is used by some of the MRI pseudo-ops. */ | |
7e047ac2 | 191 | symbolS *line_label; |
1356d77d ILT |
192 | |
193 | /* This global variable is used to support MRI common sections. We | |
194 | translate such sections into a common symbol. This variable is | |
195 | non-NULL when we are in an MRI common section. */ | |
196 | symbolS *mri_common_symbol; | |
197 | ||
286cb27a ILT |
198 | /* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we |
199 | need to align to an even byte boundary unless the next pseudo-op is | |
200 | dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment | |
201 | may be needed. */ | |
202 | static int mri_pending_align; | |
203 | ||
86038ada | 204 | static int scrub_from_string PARAMS ((char **)); |
71dd3c40 | 205 | static void do_align PARAMS ((int, char *, int)); |
e28c40d7 ILT |
206 | static int hex_float PARAMS ((int, char *)); |
207 | static void do_org PARAMS ((segT, expressionS *, int)); | |
6ef37255 | 208 | char *demand_copy_string PARAMS ((int *lenP)); |
016e0d42 | 209 | int is_it_end_of_statement PARAMS ((void)); |
5ac34ac3 | 210 | static segT get_segmented_expression PARAMS ((expressionS *expP)); |
016e0d42 | 211 | static segT get_known_segmented_expression PARAMS ((expressionS * expP)); |
016e0d42 | 212 | static void pobegin PARAMS ((void)); |
7e047ac2 | 213 | static int get_line_sb PARAMS ((sb *)); |
fecd2382 | 214 | \f |
6efd877d | 215 | |
016e0d42 ILT |
216 | void |
217 | read_begin () | |
fecd2382 | 218 | { |
016e0d42 | 219 | const char *p; |
f8701a3f | 220 | |
6efd877d KR |
221 | pobegin (); |
222 | obj_read_begin_hook (); | |
f8701a3f | 223 | |
4380166d KR |
224 | /* Something close -- but not too close -- to a multiple of 1024. |
225 | The debugging malloc I'm using has 24 bytes of overhead. */ | |
6594d6b9 KR |
226 | obstack_begin (¬es, chunksize); |
227 | obstack_begin (&cond_obstack, chunksize); | |
f8701a3f | 228 | |
f8701a3f SC |
229 | /* Use machine dependent syntax */ |
230 | for (p = line_separator_chars; *p; p++) | |
58d4951d | 231 | is_end_of_line[(unsigned char) *p] = 1; |
f8701a3f | 232 | /* Use more. FIXME-SOMEDAY. */ |
1356d77d ILT |
233 | |
234 | if (flag_mri) | |
235 | lex_type['?'] = 3; | |
fecd2382 RP |
236 | } |
237 | \f | |
238 | /* set up pseudo-op tables */ | |
239 | ||
1356d77d | 240 | static struct hash_control *po_hash; |
fecd2382 | 241 | |
016e0d42 | 242 | static const pseudo_typeS potable[] = |
fecd2382 | 243 | { |
6efd877d KR |
244 | {"abort", s_abort, 0}, |
245 | {"align", s_align_ptwo, 0}, | |
246 | {"ascii", stringer, 0}, | |
247 | {"asciz", stringer, 1}, | |
931a8fab | 248 | {"balign", s_align_bytes, 0}, |
4080c270 ILT |
249 | {"balignw", s_align_bytes, -2}, |
250 | {"balignl", s_align_bytes, -4}, | |
f8701a3f | 251 | /* block */ |
6efd877d KR |
252 | {"byte", cons, 1}, |
253 | {"comm", s_comm, 0}, | |
1356d77d ILT |
254 | {"common", s_mri_common, 0}, |
255 | {"common.s", s_mri_common, 1}, | |
6efd877d | 256 | {"data", s_data, 0}, |
1356d77d ILT |
257 | {"dc", cons, 2}, |
258 | {"dc.b", cons, 1}, | |
259 | {"dc.d", float_cons, 'd'}, | |
260 | {"dc.l", cons, 4}, | |
261 | {"dc.s", float_cons, 'f'}, | |
262 | {"dc.w", cons, 2}, | |
263 | {"dc.x", float_cons, 'x'}, | |
e28c40d7 ILT |
264 | {"dcb", s_space, 2}, |
265 | {"dcb.b", s_space, 1}, | |
266 | {"dcb.d", s_float_space, 'd'}, | |
267 | {"dcb.l", s_space, 4}, | |
268 | {"dcb.s", s_float_space, 'f'}, | |
269 | {"dcb.w", s_space, 2}, | |
270 | {"dcb.x", s_float_space, 'x'}, | |
1356d77d ILT |
271 | {"ds", s_space, 2}, |
272 | {"ds.b", s_space, 1}, | |
e28c40d7 | 273 | {"ds.d", s_space, 8}, |
1356d77d | 274 | {"ds.l", s_space, 4}, |
e28c40d7 ILT |
275 | {"ds.p", s_space, 12}, |
276 | {"ds.s", s_space, 4}, | |
1356d77d | 277 | {"ds.w", s_space, 2}, |
e28c40d7 | 278 | {"ds.x", s_space, 12}, |
42ac8fa8 | 279 | {"debug", s_ignore, 0}, |
604633ae | 280 | #ifdef S_SET_DESC |
4064305e | 281 | {"desc", s_desc, 0}, |
604633ae | 282 | #endif |
f8701a3f | 283 | /* dim */ |
6efd877d | 284 | {"double", float_cons, 'd'}, |
f8701a3f | 285 | /* dsect */ |
6efd877d KR |
286 | {"eject", listing_eject, 0}, /* Formfeed listing */ |
287 | {"else", s_else, 0}, | |
e28c40d7 | 288 | {"elsec", s_else, 0}, |
6efd877d | 289 | {"end", s_end, 0}, |
e28c40d7 | 290 | {"endc", s_endif, 0}, |
6efd877d | 291 | {"endif", s_endif, 0}, |
f8701a3f | 292 | /* endef */ |
6efd877d | 293 | {"equ", s_set, 0}, |
42ac8fa8 | 294 | {"err", s_err, 0}, |
7e047ac2 | 295 | {"exitm", s_mexit, 0}, |
f8701a3f | 296 | /* extend */ |
6efd877d | 297 | {"extern", s_ignore, 0}, /* We treat all undef as ext */ |
9a7d824a ILT |
298 | {"appfile", s_app_file, 1}, |
299 | {"appline", s_app_line, 0}, | |
e28c40d7 | 300 | {"fail", s_fail, 0}, |
6efd877d KR |
301 | {"file", s_app_file, 0}, |
302 | {"fill", s_fill, 0}, | |
303 | {"float", float_cons, 'f'}, | |
e28c40d7 | 304 | {"format", s_ignore, 0}, |
6efd877d KR |
305 | {"global", s_globl, 0}, |
306 | {"globl", s_globl, 0}, | |
307 | {"hword", cons, 2}, | |
e28c40d7 | 308 | {"if", s_if, (int) O_ne}, |
7e047ac2 | 309 | {"ifc", s_ifc, 0}, |
6efd877d | 310 | {"ifdef", s_ifdef, 0}, |
e28c40d7 | 311 | {"ifeq", s_if, (int) O_eq}, |
6efd877d | 312 | {"ifeqs", s_ifeqs, 0}, |
e28c40d7 ILT |
313 | {"ifge", s_if, (int) O_ge}, |
314 | {"ifgt", s_if, (int) O_gt}, | |
315 | {"ifle", s_if, (int) O_le}, | |
316 | {"iflt", s_if, (int) O_lt}, | |
7e047ac2 | 317 | {"ifnc", s_ifc, 1}, |
6efd877d | 318 | {"ifndef", s_ifdef, 1}, |
e28c40d7 | 319 | {"ifne", s_if, (int) O_ne}, |
6efd877d KR |
320 | {"ifnes", s_ifeqs, 1}, |
321 | {"ifnotdef", s_ifdef, 1}, | |
322 | {"include", s_include, 0}, | |
323 | {"int", cons, 4}, | |
7e047ac2 | 324 | {"irp", s_irp, 0}, |
42ac8fa8 | 325 | {"irep", s_irp, 0}, |
7e047ac2 | 326 | {"irpc", s_irp, 1}, |
42ac8fa8 | 327 | {"irepc", s_irp, 1}, |
6efd877d KR |
328 | {"lcomm", s_lcomm, 0}, |
329 | {"lflags", listing_flags, 0}, /* Listing flags */ | |
7d3741ed | 330 | {"linkonce", s_linkonce, 0}, |
6efd877d | 331 | {"list", listing_list, 1}, /* Turn listing on */ |
e28c40d7 | 332 | {"llen", listing_psize, 1}, |
6efd877d KR |
333 | {"long", cons, 4}, |
334 | {"lsym", s_lsym, 0}, | |
7e047ac2 ILT |
335 | {"macro", s_macro, 0}, |
336 | {"mexit", s_mexit, 0}, | |
20710f1c ILT |
337 | {"mri", s_mri, 0}, |
338 | {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */ | |
cef72a92 | 339 | {"name", s_ignore, 0}, |
e28c40d7 | 340 | {"noformat", s_ignore, 0}, |
6efd877d | 341 | {"nolist", listing_list, 0}, /* Turn listing off */ |
69e077f3 | 342 | {"nopage", listing_nopage, 0}, |
80aab579 | 343 | {"octa", cons, 16}, |
e28c40d7 | 344 | {"offset", s_struct, 0}, |
6efd877d | 345 | {"org", s_org, 0}, |
931a8fab | 346 | {"p2align", s_align_ptwo, 0}, |
4080c270 ILT |
347 | {"p2alignw", s_align_ptwo, -2}, |
348 | {"p2alignl", s_align_ptwo, -4}, | |
69e077f3 ILT |
349 | {"page", listing_eject, 0}, |
350 | {"plen", listing_psize, 0}, | |
42ac8fa8 | 351 | {"print", s_print, 0}, |
6efd877d | 352 | {"psize", listing_psize, 0}, /* set paper size */ |
42ac8fa8 | 353 | {"purgem", s_purgem, 0}, |
80aab579 | 354 | {"quad", cons, 8}, |
42ac8fa8 | 355 | {"rep", s_rept, 0}, |
7e047ac2 | 356 | {"rept", s_rept, 0}, |
86038ada | 357 | {"rva", s_rva, 4}, |
6efd877d | 358 | {"sbttl", listing_title, 1}, /* Subtitle of listing */ |
f8701a3f SC |
359 | /* scl */ |
360 | /* sect */ | |
6efd877d KR |
361 | {"set", s_set, 0}, |
362 | {"short", cons, 2}, | |
363 | {"single", float_cons, 'f'}, | |
f8701a3f | 364 | /* size */ |
6efd877d | 365 | {"space", s_space, 0}, |
e14994d9 | 366 | {"spc", s_ignore, 0}, |
4064305e SS |
367 | {"stabd", s_stab, 'd'}, |
368 | {"stabn", s_stab, 'n'}, | |
369 | {"stabs", s_stab, 's'}, | |
ba71c54d | 370 | {"string", stringer, 1}, |
e28c40d7 | 371 | {"struct", s_struct, 0}, |
f8701a3f | 372 | /* tag */ |
6efd877d | 373 | {"text", s_text, 0}, |
6ef37255 KR |
374 | |
375 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
376 | won't be able to use it for a while -- probably a year or more. | |
377 | But once this has been released, check with gcc maintainers | |
378 | before deleting it or even changing the spelling. */ | |
379 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
380 | /* If we're folding case -- done for some targets, not necessarily | |
381 | all -- the above string in an input file will be converted to | |
382 | this one. Match it either way... */ | |
383 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
384 | ||
6efd877d | 385 | {"title", listing_title, 0}, /* Listing title */ |
e14994d9 | 386 | {"ttl", listing_title, 0}, |
f8701a3f SC |
387 | /* type */ |
388 | /* use */ | |
389 | /* val */ | |
e14994d9 | 390 | {"xcom", s_comm, 0}, |
1356d77d | 391 | {"xdef", s_globl, 0}, |
e14994d9 | 392 | {"xref", s_ignore, 0}, |
4064305e | 393 | {"xstabs", s_xstab, 's'}, |
6efd877d | 394 | {"word", cons, 2}, |
c02fd8dc | 395 | {"zero", s_space, 0}, |
6efd877d | 396 | {NULL} /* end sentinel */ |
fecd2382 RP |
397 | }; |
398 | ||
2209b19c KR |
399 | static int pop_override_ok = 0; |
400 | static const char *pop_table_name; | |
401 | ||
402 | void | |
403 | pop_insert (table) | |
404 | const pseudo_typeS *table; | |
6efd877d | 405 | { |
2209b19c | 406 | const char *errtxt; |
6efd877d | 407 | const pseudo_typeS *pop; |
2209b19c KR |
408 | for (pop = table; pop->poc_name; pop++) |
409 | { | |
410 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
411 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
6594d6b9 KR |
412 | as_fatal ("error constructing %s pseudo-op table: %s", pop_table_name, |
413 | errtxt); | |
2209b19c KR |
414 | } |
415 | } | |
6efd877d | 416 | |
2209b19c KR |
417 | #ifndef md_pop_insert |
418 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
419 | #endif | |
420 | ||
421 | #ifndef obj_pop_insert | |
422 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
423 | #endif | |
424 | ||
425 | static void | |
426 | pobegin () | |
427 | { | |
6efd877d KR |
428 | po_hash = hash_new (); |
429 | ||
430 | /* Do the target-specific pseudo ops. */ | |
2209b19c KR |
431 | pop_table_name = "md"; |
432 | md_pop_insert (); | |
6efd877d KR |
433 | |
434 | /* Now object specific. Skip any that were in the target table. */ | |
2209b19c KR |
435 | pop_table_name = "obj"; |
436 | pop_override_ok = 1; | |
437 | obj_pop_insert (); | |
6efd877d KR |
438 | |
439 | /* Now portable ones. Skip any that we've seen already. */ | |
2209b19c KR |
440 | pop_table_name = "standard"; |
441 | pop_insert (potable); | |
442 | } | |
fecd2382 | 443 | \f |
58d4951d ILT |
444 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ |
445 | if (ignore_input ()) \ | |
446 | { \ | |
447 | while (! is_end_of_line[(unsigned char) *input_line_pointer++]) \ | |
448 | if (input_line_pointer == buffer_limit) \ | |
449 | break; \ | |
450 | continue; \ | |
f8701a3f | 451 | } |
a39116f1 | 452 | |
fecd2382 | 453 | |
86038ada ILT |
454 | /* This function is used when scrubbing the characters between #APP |
455 | and #NO_APP. */ | |
456 | ||
457 | static char *scrub_string; | |
458 | static char *scrub_string_end; | |
459 | ||
460 | static int | |
461 | scrub_from_string (from) | |
462 | char **from; | |
463 | { | |
464 | int size; | |
465 | ||
466 | *from = scrub_string; | |
467 | size = scrub_string_end - scrub_string; | |
468 | scrub_string = scrub_string_end; | |
469 | return size; | |
470 | } | |
471 | ||
fecd2382 RP |
472 | /* read_a_source_file() |
473 | * | |
474 | * We read the file, putting things into a web that | |
475 | * represents what we have been reading. | |
476 | */ | |
6efd877d KR |
477 | void |
478 | read_a_source_file (name) | |
479 | char *name; | |
fecd2382 | 480 | { |
f8701a3f | 481 | register char c; |
6efd877d | 482 | register char *s; /* string of symbol, '\0' appended */ |
f8701a3f | 483 | register int temp; |
6efd877d | 484 | pseudo_typeS *pop; |
f8701a3f | 485 | |
6efd877d | 486 | buffer = input_scrub_new_file (name); |
f8701a3f | 487 | |
6efd877d KR |
488 | listing_file (name); |
489 | listing_newline (""); | |
f8701a3f | 490 | |
6efd877d KR |
491 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) |
492 | { /* We have another line to parse. */ | |
493 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
9471a360 KR |
494 | contin: /* JF this goto is my fault I admit it. |
495 | Someone brave please re-write the whole | |
496 | input section here? Pleeze??? */ | |
6efd877d | 497 | while (input_line_pointer < buffer_limit) |
9471a360 KR |
498 | { |
499 | /* We have more of this buffer to parse. */ | |
f8701a3f SC |
500 | |
501 | /* | |
502 | * We now have input_line_pointer->1st char of next line. | |
503 | * If input_line_pointer [-1] == '\n' then we just | |
504 | * scanned another line: so bump line counters. | |
505 | */ | |
d2550c72 | 506 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
6efd877d | 507 | { |
a2a5a4fa KR |
508 | #ifdef md_start_line_hook |
509 | md_start_line_hook (); | |
510 | #endif | |
511 | ||
385ce433 JL |
512 | if (input_line_pointer[-1] == '\n') |
513 | bump_line_counters (); | |
f8701a3f | 514 | |
7e047ac2 ILT |
515 | line_label = NULL; |
516 | ||
cef72a92 | 517 | if (flag_m68k_mri |
1356d77d ILT |
518 | #ifdef LABELS_WITHOUT_COLONS |
519 | || 1 | |
520 | #endif | |
521 | ) | |
6efd877d | 522 | { |
1356d77d ILT |
523 | /* Text at the start of a line must be a label, we |
524 | run down and stick a colon in. */ | |
525 | if (is_name_beginner (*input_line_pointer)) | |
526 | { | |
527 | char *line_start = input_line_pointer; | |
7e047ac2 ILT |
528 | char c; |
529 | ||
530 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1356d77d | 531 | |
7e047ac2 ILT |
532 | c = get_symbol_end (); |
533 | ||
534 | /* In MRI mode, the EQU pseudoop must be | |
535 | handled specially. */ | |
cef72a92 | 536 | if (flag_m68k_mri) |
1356d77d | 537 | { |
7e047ac2 ILT |
538 | char *rest = input_line_pointer + 1; |
539 | ||
540 | if (*rest == ':') | |
541 | ++rest; | |
542 | if (*rest == ' ' || *rest == '\t') | |
543 | ++rest; | |
544 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
545 | || strncasecmp (rest, "SET", 3) == 0) | |
546 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1356d77d | 547 | { |
7e047ac2 ILT |
548 | input_line_pointer = rest + 3; |
549 | equals (line_start); | |
550 | continue; | |
1356d77d ILT |
551 | } |
552 | } | |
6efd877d | 553 | |
7e047ac2 ILT |
554 | line_label = colon (line_start); |
555 | ||
1356d77d ILT |
556 | *input_line_pointer = c; |
557 | if (c == ':') | |
558 | input_line_pointer++; | |
559 | } | |
6efd877d | 560 | } |
9471a360 | 561 | } |
f8701a3f | 562 | |
f8701a3f SC |
563 | /* |
564 | * We are at the begining of a line, or similar place. | |
565 | * We expect a well-formed assembler statement. | |
566 | * A "symbol-name:" is a statement. | |
567 | * | |
568 | * Depending on what compiler is used, the order of these tests | |
569 | * may vary to catch most common case 1st. | |
570 | * Each test is independent of all other tests at the (top) level. | |
571 | * PLEASE make a compiler that doesn't use this assembler. | |
572 | * It is crufty to waste a compiler's time encoding things for this | |
573 | * assembler, which then wastes more time decoding it. | |
574 | * (And communicating via (linear) files is silly! | |
575 | * If you must pass stuff, please pass a tree!) | |
576 | */ | |
9471a360 KR |
577 | if ((c = *input_line_pointer++) == '\t' |
578 | || c == ' ' | |
579 | || c == '\f' | |
580 | || c == 0) | |
6efd877d KR |
581 | { |
582 | c = *input_line_pointer++; | |
583 | } | |
584 | know (c != ' '); /* No further leading whitespace. */ | |
585 | LISTING_NEWLINE (); | |
f8701a3f SC |
586 | /* |
587 | * C is the 1st significant character. | |
588 | * Input_line_pointer points after that character. | |
589 | */ | |
6efd877d | 590 | if (is_name_beginner (c)) |
6ef37255 KR |
591 | { |
592 | /* want user-defined label or pseudo/opcode */ | |
6efd877d KR |
593 | HANDLE_CONDITIONAL_ASSEMBLY (); |
594 | ||
f8701a3f | 595 | s = --input_line_pointer; |
6efd877d | 596 | c = get_symbol_end (); /* name's delimiter */ |
f8701a3f SC |
597 | /* |
598 | * C is character after symbol. | |
599 | * That character's place in the input line is now '\0'. | |
600 | * S points to the beginning of the symbol. | |
601 | * [In case of pseudo-op, s->'.'.] | |
602 | * Input_line_pointer->'\0' where c was. | |
603 | */ | |
9a7d824a | 604 | if (TC_START_LABEL(c, input_line_pointer)) |
6efd877d | 605 | { |
cef72a92 | 606 | if (flag_m68k_mri) |
7e047ac2 ILT |
607 | { |
608 | char *rest = input_line_pointer + 1; | |
609 | ||
610 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
611 | ||
612 | if (*rest == ':') | |
613 | ++rest; | |
614 | if (*rest == ' ' || *rest == '\t') | |
615 | ++rest; | |
616 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
617 | || strncasecmp (rest, "SET", 3) == 0) | |
618 | && (rest[3] == ' ' || rest[3] == '\t')) | |
619 | { | |
620 | input_line_pointer = rest + 3; | |
621 | equals (s); | |
622 | continue; | |
623 | } | |
624 | } | |
625 | ||
626 | line_label = colon (s); /* user-defined label */ | |
6efd877d | 627 | *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */ |
f8701a3f | 628 | /* Input_line_pointer->after ':'. */ |
6efd877d KR |
629 | SKIP_WHITESPACE (); |
630 | ||
f8701a3f | 631 | |
6efd877d | 632 | } |
4064305e SS |
633 | else if (c == '=' |
634 | || (input_line_pointer[1] == '=' | |
635 | #ifdef TC_EQUAL_IN_INSN | |
636 | && ! TC_EQUAL_IN_INSN (c, input_line_pointer) | |
637 | #endif | |
638 | )) | |
9c6d3f66 | 639 | { |
6efd877d KR |
640 | equals (s); |
641 | demand_empty_rest_of_line (); | |
642 | } | |
643 | else | |
644 | { /* expect pseudo-op or machine instruction */ | |
8ff6f40e ILT |
645 | pop = NULL; |
646 | ||
d4c8cbd8 JL |
647 | #define IGNORE_OPCODE_CASE |
648 | #ifdef IGNORE_OPCODE_CASE | |
649 | { | |
650 | char *s2 = s; | |
651 | while (*s2) | |
652 | { | |
653 | if (isupper (*s2)) | |
654 | *s2 = tolower (*s2); | |
655 | s2++; | |
656 | } | |
657 | } | |
658 | #endif | |
659 | ||
cef72a92 | 660 | if (flag_m68k_mri |
8ff6f40e | 661 | #ifdef NO_PSEUDO_DOT |
1356d77d | 662 | || 1 |
8ff6f40e | 663 | #endif |
1356d77d ILT |
664 | ) |
665 | { | |
666 | /* The MRI assembler and the m88k use pseudo-ops | |
667 | without a period. */ | |
668 | pop = (pseudo_typeS *) hash_find (po_hash, s); | |
669 | if (pop != NULL && pop->poc_handler == NULL) | |
670 | pop = NULL; | |
671 | } | |
8ff6f40e | 672 | |
7e047ac2 | 673 | if (pop != NULL |
cef72a92 | 674 | || (! flag_m68k_mri && *s == '.')) |
6efd877d KR |
675 | { |
676 | /* | |
9471a360 KR |
677 | * PSEUDO - OP. |
678 | * | |
679 | * WARNING: c has next char, which may be end-of-line. | |
680 | * We lookup the pseudo-op table with s+1 because we | |
681 | * already know that the pseudo-op begins with a '.'. | |
682 | */ | |
6efd877d | 683 | |
8ff6f40e ILT |
684 | if (pop == NULL) |
685 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
6efd877d | 686 | |
286cb27a ILT |
687 | /* In MRI mode, we may need to insert an |
688 | automatic alignment directive. What a hack | |
689 | this is. */ | |
690 | if (mri_pending_align | |
691 | && (pop == NULL | |
692 | || ! ((pop->poc_handler == cons | |
693 | && pop->poc_val == 1) | |
694 | || (pop->poc_handler == s_space | |
695 | && pop->poc_val == 1)))) | |
696 | { | |
71dd3c40 | 697 | do_align (1, (char *) NULL, 0); |
286cb27a ILT |
698 | mri_pending_align = 0; |
699 | } | |
700 | ||
6efd877d | 701 | /* Print the error msg now, while we still can */ |
8ff6f40e | 702 | if (pop == NULL) |
6efd877d KR |
703 | { |
704 | as_bad ("Unknown pseudo-op: `%s'", s); | |
f8701a3f | 705 | *input_line_pointer = c; |
6efd877d | 706 | s_ignore (0); |
46b81190 | 707 | continue; |
6efd877d KR |
708 | } |
709 | ||
710 | /* Put it back for error messages etc. */ | |
711 | *input_line_pointer = c; | |
9c6d3f66 KR |
712 | /* The following skip of whitespace is compulsory. |
713 | A well shaped space is sometimes all that separates | |
714 | keyword from operands. */ | |
6efd877d | 715 | if (c == ' ' || c == '\t') |
d4c8cbd8 | 716 | input_line_pointer++; |
6efd877d | 717 | /* |
9471a360 KR |
718 | * Input_line is restored. |
719 | * Input_line_pointer->1st non-blank char | |
720 | * after pseudo-operation. | |
721 | */ | |
46b81190 | 722 | (*pop->poc_handler) (pop->poc_val); |
e28c40d7 ILT |
723 | |
724 | /* If that was .end, just get out now. */ | |
725 | if (pop->poc_handler == s_end) | |
726 | goto quit; | |
6efd877d KR |
727 | } |
728 | else | |
6efd877d | 729 | { /* machine instruction */ |
4026c122 ILT |
730 | int inquote = 0; |
731 | ||
286cb27a ILT |
732 | if (mri_pending_align) |
733 | { | |
71dd3c40 | 734 | do_align (1, (char *) NULL, 0); |
286cb27a ILT |
735 | mri_pending_align = 0; |
736 | } | |
737 | ||
6efd877d KR |
738 | /* WARNING: c has char, which may be end-of-line. */ |
739 | /* Also: input_line_pointer->`\0` where c was. */ | |
740 | *input_line_pointer = c; | |
58d4951d | 741 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
4026c122 | 742 | || inquote |
4064305e SS |
743 | #ifdef TC_EOL_IN_INSN |
744 | || TC_EOL_IN_INSN (input_line_pointer) | |
745 | #endif | |
746 | ) | |
6efd877d | 747 | { |
cef72a92 | 748 | if (flag_m68k_mri && *input_line_pointer == '\'') |
4026c122 | 749 | inquote = ! inquote; |
6efd877d KR |
750 | input_line_pointer++; |
751 | } | |
f8701a3f | 752 | |
6efd877d KR |
753 | c = *input_line_pointer; |
754 | *input_line_pointer = '\0'; | |
f8701a3f | 755 | |
326d16ca KH |
756 | #ifdef OBJ_GENERATE_ASM_LINENO |
757 | if (generate_asm_lineno == 0) | |
758 | { | |
f10a96cb | 759 | if (ecoff_no_current_file ()) |
326d16ca KH |
760 | generate_asm_lineno = 1; |
761 | } | |
f10a96cb ILT |
762 | if (generate_asm_lineno == 1) |
763 | { | |
1b434ced ILT |
764 | unsigned int lineno; |
765 | char *s; | |
766 | ||
daad3bbf | 767 | as_where (&s, &lineno); |
326d16ca | 768 | OBJ_GENERATE_ASM_LINENO (s, lineno); |
f10a96cb | 769 | } |
daad3bbf KH |
770 | #endif |
771 | ||
7e047ac2 ILT |
772 | if (macro_defined) |
773 | { | |
774 | sb out; | |
775 | const char *err; | |
776 | ||
777 | if (check_macro (s, &out, '\0', &err)) | |
778 | { | |
779 | if (err != NULL) | |
780 | as_bad (err); | |
781 | *input_line_pointer++ = c; | |
782 | input_scrub_include_sb (&out, | |
783 | input_line_pointer); | |
784 | sb_kill (&out); | |
785 | buffer_limit = | |
786 | input_scrub_next_buffer (&input_line_pointer); | |
787 | continue; | |
788 | } | |
789 | } | |
790 | ||
6efd877d | 791 | md_assemble (s); /* Assemble 1 instruction. */ |
f8701a3f | 792 | |
6efd877d | 793 | *input_line_pointer++ = c; |
f8701a3f | 794 | |
d4c8cbd8 JL |
795 | /* We resume loop AFTER the end-of-line from |
796 | this instruction. */ | |
6efd877d | 797 | } /* if (*s=='.') */ |
6efd877d | 798 | } /* if c==':' */ |
f8701a3f | 799 | continue; |
6efd877d | 800 | } /* if (is_name_beginner(c) */ |
f8701a3f | 801 | |
f8701a3f | 802 | |
d4c8cbd8 | 803 | /* Empty statement? */ |
58d4951d | 804 | if (is_end_of_line[(unsigned char) c]) |
d4c8cbd8 | 805 | continue; |
6efd877d | 806 | |
9777b772 KR |
807 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) |
808 | && isdigit (c)) | |
d4c8cbd8 JL |
809 | { |
810 | /* local label ("4:") */ | |
6efd877d KR |
811 | char *backup = input_line_pointer; |
812 | ||
813 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
814 | ||
815 | temp = c - '0'; | |
816 | ||
817 | while (isdigit (*input_line_pointer)) | |
818 | { | |
819 | temp = (temp * 10) + *input_line_pointer - '0'; | |
820 | ++input_line_pointer; | |
821 | } /* read the whole number */ | |
822 | ||
9777b772 KR |
823 | if (LOCAL_LABELS_DOLLAR |
824 | && *input_line_pointer == '$' | |
6efd877d KR |
825 | && *(input_line_pointer + 1) == ':') |
826 | { | |
827 | input_line_pointer += 2; | |
828 | ||
829 | if (dollar_label_defined (temp)) | |
830 | { | |
831 | as_fatal ("label \"%d$\" redefined", temp); | |
832 | } | |
833 | ||
834 | define_dollar_label (temp); | |
835 | colon (dollar_label_name (temp, 0)); | |
836 | continue; | |
837 | } | |
6efd877d | 838 | |
9777b772 KR |
839 | if (LOCAL_LABELS_FB |
840 | && *input_line_pointer++ == ':') | |
6efd877d KR |
841 | { |
842 | fb_label_instance_inc (temp); | |
843 | colon (fb_label_name (temp, 0)); | |
844 | continue; | |
845 | } | |
6efd877d KR |
846 | |
847 | input_line_pointer = backup; | |
848 | } /* local label ("4:") */ | |
f8701a3f | 849 | |
6efd877d KR |
850 | if (c && strchr (line_comment_chars, c)) |
851 | { /* Its a comment. Better say APP or NO_APP */ | |
f8701a3f SC |
852 | char *ends; |
853 | char *new_buf; | |
854 | char *new_tmp; | |
604633ae | 855 | unsigned int new_length; |
f8701a3f | 856 | char *tmp_buf = 0; |
6efd877d KR |
857 | |
858 | bump_line_counters (); | |
859 | s = input_line_pointer; | |
860 | if (strncmp (s, "APP\n", 4)) | |
861 | continue; /* We ignore it */ | |
862 | s += 4; | |
863 | ||
864 | ends = strstr (s, "#NO_APP\n"); | |
865 | ||
866 | if (!ends) | |
867 | { | |
604633ae ILT |
868 | unsigned int tmp_len; |
869 | unsigned int num; | |
6efd877d | 870 | |
f8701a3f SC |
871 | /* The end of the #APP wasn't in this buffer. We |
872 | keep reading in buffers until we find the #NO_APP | |
873 | that goes with this #APP There is one. The specs | |
874 | guarentee it. . . */ | |
6efd877d | 875 | tmp_len = buffer_limit - s; |
85825401 | 876 | tmp_buf = xmalloc (tmp_len + 1); |
4380166d | 877 | memcpy (tmp_buf, s, tmp_len); |
6efd877d KR |
878 | do |
879 | { | |
880 | new_tmp = input_scrub_next_buffer (&buffer); | |
f8701a3f | 881 | if (!new_tmp) |
6efd877d | 882 | break; |
f8701a3f | 883 | else |
6efd877d | 884 | buffer_limit = new_tmp; |
f8701a3f | 885 | input_line_pointer = buffer; |
6efd877d | 886 | ends = strstr (buffer, "#NO_APP\n"); |
f8701a3f | 887 | if (ends) |
6efd877d | 888 | num = ends - buffer; |
f8701a3f | 889 | else |
6efd877d KR |
890 | num = buffer_limit - buffer; |
891 | ||
892 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
9eb5f4b8 | 893 | memcpy (tmp_buf + tmp_len, buffer, num); |
6efd877d KR |
894 | tmp_len += num; |
895 | } | |
896 | while (!ends); | |
897 | ||
898 | input_line_pointer = ends ? ends + 8 : NULL; | |
899 | ||
900 | s = tmp_buf; | |
901 | ends = s + tmp_len; | |
902 | ||
903 | } | |
904 | else | |
905 | { | |
906 | input_line_pointer = ends + 8; | |
907 | } | |
6efd877d KR |
908 | |
909 | scrub_string = s; | |
86038ada ILT |
910 | scrub_string_end = ends; |
911 | ||
912 | new_length = ends - s; | |
913 | new_buf = (char *) xmalloc (new_length); | |
914 | new_tmp = new_buf; | |
6efd877d KR |
915 | for (;;) |
916 | { | |
86038ada ILT |
917 | int space; |
918 | int size; | |
f8701a3f | 919 | |
86038ada ILT |
920 | space = (new_buf + new_length) - new_tmp; |
921 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
922 | ||
923 | if (size < space) | |
6efd877d | 924 | { |
86038ada ILT |
925 | new_tmp += size; |
926 | break; | |
f8701a3f | 927 | } |
86038ada ILT |
928 | |
929 | new_buf = xrealloc (new_buf, new_length + 100); | |
930 | new_tmp = new_buf + new_length; | |
931 | new_length += 100; | |
fecd2382 | 932 | } |
f8701a3f SC |
933 | |
934 | if (tmp_buf) | |
6efd877d KR |
935 | free (tmp_buf); |
936 | old_buffer = buffer; | |
937 | old_input = input_line_pointer; | |
938 | old_limit = buffer_limit; | |
939 | buffer = new_buf; | |
940 | input_line_pointer = new_buf; | |
941 | buffer_limit = new_tmp; | |
f8701a3f SC |
942 | continue; |
943 | } | |
944 | ||
6efd877d | 945 | HANDLE_CONDITIONAL_ASSEMBLY (); |
f8701a3f | 946 | |
cef72a92 ILT |
947 | #ifdef tc_unrecognized_line |
948 | if (tc_unrecognized_line (c)) | |
949 | continue; | |
950 | #endif | |
951 | ||
f8701a3f SC |
952 | /* as_warn("Junk character %d.",c); Now done by ignore_rest */ |
953 | input_line_pointer--; /* Report unknown char as ignored. */ | |
6efd877d KR |
954 | ignore_rest_of_line (); |
955 | } /* while (input_line_pointer<buffer_limit) */ | |
a2a5a4fa KR |
956 | |
957 | #ifdef md_after_pass_hook | |
958 | md_after_pass_hook (); | |
959 | #endif | |
960 | ||
6efd877d KR |
961 | if (old_buffer) |
962 | { | |
86038ada | 963 | free (buffer); |
6efd877d KR |
964 | bump_line_counters (); |
965 | if (old_input != 0) | |
966 | { | |
967 | buffer = old_buffer; | |
968 | input_line_pointer = old_input; | |
969 | buffer_limit = old_limit; | |
f8701a3f SC |
970 | old_buffer = 0; |
971 | goto contin; | |
972 | } | |
973 | } | |
6efd877d | 974 | } /* while (more buffers to scan) */ |
f8701a3f | 975 | |
e28c40d7 ILT |
976 | quit: |
977 | input_scrub_close (); /* Close the input file */ | |
4075afe1 | 978 | } |
fecd2382 | 979 | |
18c9057f ILT |
980 | /* For most MRI pseudo-ops, the line actually ends at the first |
981 | nonquoted space. This function looks for that point, stuffs a null | |
982 | in, and sets *STOPCP to the character that used to be there, and | |
42ac8fa8 ILT |
983 | returns the location. |
984 | ||
985 | Until I hear otherwise, I am going to assume that this is only true | |
986 | for the m68k MRI assembler. */ | |
18c9057f ILT |
987 | |
988 | char * | |
989 | mri_comment_field (stopcp) | |
990 | char *stopcp; | |
991 | { | |
42ac8fa8 ILT |
992 | #ifdef TC_M68K |
993 | ||
18c9057f ILT |
994 | char *s; |
995 | int inquote = 0; | |
996 | ||
cef72a92 | 997 | know (flag_m68k_mri); |
18c9057f ILT |
998 | |
999 | for (s = input_line_pointer; | |
1000 | ((! is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') | |
1001 | || inquote); | |
1002 | s++) | |
1003 | { | |
1004 | if (*s == '\'') | |
1005 | inquote = ! inquote; | |
1006 | } | |
1007 | *stopcp = *s; | |
1008 | *s = '\0'; | |
1009 | return s; | |
42ac8fa8 ILT |
1010 | |
1011 | #else | |
1012 | ||
1013 | char *s; | |
1014 | ||
1015 | for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++) | |
1016 | ; | |
1017 | *stopcp = *s; | |
1018 | *s = '\0'; | |
1019 | return s; | |
1020 | ||
1021 | #endif | |
1022 | ||
18c9057f ILT |
1023 | } |
1024 | ||
1025 | /* Skip to the end of an MRI comment field. */ | |
1026 | ||
1027 | void | |
1028 | mri_comment_end (stop, stopc) | |
1029 | char *stop; | |
1030 | int stopc; | |
1031 | { | |
1032 | know (flag_mri); | |
1033 | ||
1034 | input_line_pointer = stop; | |
1035 | *stop = stopc; | |
1036 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1037 | ++input_line_pointer; | |
1038 | } | |
1039 | ||
6efd877d | 1040 | void |
604633ae ILT |
1041 | s_abort (ignore) |
1042 | int ignore; | |
6efd877d KR |
1043 | { |
1044 | as_fatal (".abort detected. Abandoning ship."); | |
4075afe1 KR |
1045 | } |
1046 | ||
1047 | /* Guts of .align directive. */ | |
1048 | static void | |
71dd3c40 | 1049 | do_align (n, fill, len) |
4075afe1 KR |
1050 | int n; |
1051 | char *fill; | |
71dd3c40 | 1052 | int len; |
4075afe1 KR |
1053 | { |
1054 | #ifdef md_do_align | |
71dd3c40 | 1055 | md_do_align (n, fill, len, just_record_alignment); |
4075afe1 KR |
1056 | #endif |
1057 | if (!fill) | |
1058 | { | |
1059 | /* @@ Fix this right for BFD! */ | |
1060 | static char zero; | |
1061 | static char nop_opcode = NOP_OPCODE; | |
1062 | ||
1063 | if (now_seg != data_section && now_seg != bss_section) | |
1064 | { | |
1065 | fill = &nop_opcode; | |
1066 | } | |
1067 | else | |
1068 | { | |
1069 | fill = &zero; | |
1070 | } | |
71dd3c40 | 1071 | len = 1; |
4075afe1 | 1072 | } |
71dd3c40 | 1073 | |
4075afe1 KR |
1074 | /* Only make a frag if we HAVE to. . . */ |
1075 | if (n && !need_pass_2) | |
71dd3c40 ILT |
1076 | { |
1077 | if (len <= 1) | |
1078 | frag_align (n, *fill); | |
1079 | else | |
1080 | frag_align_pattern (n, fill, len); | |
1081 | } | |
4075afe1 | 1082 | |
c02fd8dc | 1083 | #ifdef md_do_align |
4075afe1 | 1084 | just_record_alignment: |
c02fd8dc ILT |
1085 | #endif |
1086 | ||
4075afe1 KR |
1087 | record_alignment (now_seg, n); |
1088 | } | |
fecd2382 RP |
1089 | |
1090 | /* For machines where ".align 4" means align to a 4 byte boundary. */ | |
6efd877d KR |
1091 | void |
1092 | s_align_bytes (arg) | |
1093 | int arg; | |
fecd2382 | 1094 | { |
6efd877d | 1095 | register unsigned int temp; |
4075afe1 | 1096 | char temp_fill; |
6efd877d KR |
1097 | unsigned int i = 0; |
1098 | unsigned long max_alignment = 1 << 15; | |
18c9057f ILT |
1099 | char *stop = NULL; |
1100 | char stopc; | |
1101 | ||
1102 | if (flag_mri) | |
1103 | stop = mri_comment_field (&stopc); | |
f8701a3f | 1104 | |
58d4951d | 1105 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
4080c270 ILT |
1106 | { |
1107 | if (arg < 0) | |
1108 | temp = 0; | |
1109 | else | |
1110 | temp = arg; /* Default value from pseudo-op table */ | |
1111 | } | |
6efd877d KR |
1112 | else |
1113 | temp = get_absolute_expression (); | |
f8701a3f | 1114 | |
6efd877d KR |
1115 | if (temp > max_alignment) |
1116 | { | |
1117 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
f8701a3f SC |
1118 | } |
1119 | ||
4075afe1 KR |
1120 | /* For the sparc, `.align (1<<n)' actually means `.align n' so we |
1121 | have to convert it. */ | |
6efd877d KR |
1122 | if (temp != 0) |
1123 | { | |
1124 | for (i = 0; (temp & 1) == 0; temp >>= 1, ++i) | |
1125 | ; | |
f8701a3f | 1126 | } |
6efd877d KR |
1127 | if (temp != 1) |
1128 | as_bad ("Alignment not a power of 2"); | |
f8701a3f | 1129 | |
6efd877d KR |
1130 | temp = i; |
1131 | if (*input_line_pointer == ',') | |
1132 | { | |
71dd3c40 | 1133 | offsetT fillval; |
4080c270 | 1134 | int len; |
71dd3c40 | 1135 | |
6efd877d | 1136 | input_line_pointer++; |
71dd3c40 | 1137 | fillval = get_absolute_expression (); |
4080c270 ILT |
1138 | if (arg >= 0) |
1139 | len = 1; | |
1140 | else | |
1141 | len = - arg; | |
1142 | if (len <= 1) | |
71dd3c40 ILT |
1143 | { |
1144 | temp_fill = fillval; | |
4080c270 | 1145 | do_align (temp, &temp_fill, len); |
71dd3c40 ILT |
1146 | } |
1147 | else | |
1148 | { | |
1149 | char ab[16]; | |
1150 | ||
4080c270 | 1151 | if (len > sizeof ab) |
71dd3c40 | 1152 | abort (); |
4080c270 ILT |
1153 | md_number_to_chars (ab, fillval, len); |
1154 | do_align (temp, ab, len); | |
71dd3c40 | 1155 | } |
f8701a3f | 1156 | } |
6efd877d | 1157 | else |
71dd3c40 | 1158 | { |
4080c270 | 1159 | if (arg < 0) |
71dd3c40 ILT |
1160 | as_warn ("expected fill pattern missing"); |
1161 | do_align (temp, (char *) NULL, 0); | |
1162 | } | |
49864cfa | 1163 | |
18c9057f ILT |
1164 | if (flag_mri) |
1165 | mri_comment_end (stop, stopc); | |
1166 | ||
6efd877d | 1167 | demand_empty_rest_of_line (); |
4075afe1 | 1168 | } |
fecd2382 RP |
1169 | |
1170 | /* For machines where ".align 4" means align to 2**4 boundary. */ | |
6efd877d | 1171 | void |
71dd3c40 ILT |
1172 | s_align_ptwo (arg) |
1173 | int arg; | |
6efd877d KR |
1174 | { |
1175 | register int temp; | |
4075afe1 | 1176 | char temp_fill; |
6efd877d | 1177 | long max_alignment = 15; |
18c9057f ILT |
1178 | char *stop = NULL; |
1179 | char stopc; | |
1180 | ||
1181 | if (flag_mri) | |
1182 | stop = mri_comment_field (&stopc); | |
6efd877d KR |
1183 | |
1184 | temp = get_absolute_expression (); | |
1185 | if (temp > max_alignment) | |
1186 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
1187 | else if (temp < 0) | |
1188 | { | |
1189 | as_bad ("Alignment negative. 0 assumed."); | |
1190 | temp = 0; | |
1191 | } | |
1192 | if (*input_line_pointer == ',') | |
1193 | { | |
71dd3c40 | 1194 | offsetT fillval; |
4080c270 | 1195 | int len; |
71dd3c40 | 1196 | |
6efd877d | 1197 | input_line_pointer++; |
71dd3c40 | 1198 | fillval = get_absolute_expression (); |
4080c270 ILT |
1199 | if (arg >= 0) |
1200 | len = 1; | |
1201 | else | |
1202 | len = - arg; | |
1203 | if (len <= 1) | |
71dd3c40 ILT |
1204 | { |
1205 | temp_fill = fillval; | |
4080c270 | 1206 | do_align (temp, &temp_fill, len); |
71dd3c40 ILT |
1207 | } |
1208 | else | |
1209 | { | |
1210 | char ab[16]; | |
1211 | ||
4080c270 | 1212 | if (len > sizeof ab) |
71dd3c40 | 1213 | abort (); |
4080c270 ILT |
1214 | md_number_to_chars (ab, fillval, len); |
1215 | do_align (temp, ab, len); | |
71dd3c40 | 1216 | } |
6efd877d KR |
1217 | } |
1218 | else | |
71dd3c40 | 1219 | { |
4080c270 | 1220 | if (arg < 0) |
71dd3c40 ILT |
1221 | as_warn ("expected fill pattern missing"); |
1222 | do_align (temp, (char *) NULL, 0); | |
1223 | } | |
6efd877d | 1224 | |
18c9057f ILT |
1225 | if (flag_mri) |
1226 | mri_comment_end (stop, stopc); | |
1227 | ||
6efd877d | 1228 | demand_empty_rest_of_line (); |
4075afe1 | 1229 | } |
6efd877d KR |
1230 | |
1231 | void | |
604633ae ILT |
1232 | s_comm (ignore) |
1233 | int ignore; | |
6efd877d KR |
1234 | { |
1235 | register char *name; | |
1236 | register char c; | |
1237 | register char *p; | |
58d4951d | 1238 | offsetT temp; |
6efd877d | 1239 | register symbolS *symbolP; |
18c9057f ILT |
1240 | char *stop = NULL; |
1241 | char stopc; | |
1242 | ||
1243 | if (flag_mri) | |
1244 | stop = mri_comment_field (&stopc); | |
6efd877d KR |
1245 | |
1246 | name = input_line_pointer; | |
1247 | c = get_symbol_end (); | |
1248 | /* just after name is now '\0' */ | |
1249 | p = input_line_pointer; | |
1250 | *p = c; | |
1251 | SKIP_WHITESPACE (); | |
1252 | if (*input_line_pointer != ',') | |
1253 | { | |
1254 | as_bad ("Expected comma after symbol-name: rest of line ignored."); | |
18c9057f ILT |
1255 | if (flag_mri) |
1256 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1257 | ignore_rest_of_line (); |
1258 | return; | |
1259 | } | |
1260 | input_line_pointer++; /* skip ',' */ | |
1261 | if ((temp = get_absolute_expression ()) < 0) | |
1262 | { | |
58d4951d | 1263 | as_warn (".COMMon length (%ld.) <0! Ignored.", (long) temp); |
18c9057f ILT |
1264 | if (flag_mri) |
1265 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1266 | ignore_rest_of_line (); |
1267 | return; | |
1268 | } | |
1269 | *p = 0; | |
1270 | symbolP = symbol_find_or_make (name); | |
1271 | *p = c; | |
1272 | if (S_IS_DEFINED (symbolP)) | |
1273 | { | |
6ef37255 KR |
1274 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
1275 | S_GET_NAME (symbolP)); | |
18c9057f ILT |
1276 | if (flag_mri) |
1277 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1278 | ignore_rest_of_line (); |
1279 | return; | |
1280 | } | |
1281 | if (S_GET_VALUE (symbolP)) | |
1282 | { | |
58d4951d ILT |
1283 | if (S_GET_VALUE (symbolP) != (valueT) temp) |
1284 | as_bad ("Length of .comm \"%s\" is already %ld. Not changed to %ld.", | |
6efd877d | 1285 | S_GET_NAME (symbolP), |
58d4951d ILT |
1286 | (long) S_GET_VALUE (symbolP), |
1287 | (long) temp); | |
6efd877d KR |
1288 | } |
1289 | else | |
1290 | { | |
58d4951d | 1291 | S_SET_VALUE (symbolP, (valueT) temp); |
6efd877d KR |
1292 | S_SET_EXTERNAL (symbolP); |
1293 | } | |
9471a360 | 1294 | #ifdef OBJ_VMS |
def66e24 DM |
1295 | { |
1296 | extern int flag_one; | |
1297 | if ( (!temp) || !flag_one) | |
1298 | S_GET_OTHER(symbolP) = const_flag; | |
1299 | } | |
9471a360 | 1300 | #endif /* not OBJ_VMS */ |
6efd877d | 1301 | know (symbolP->sy_frag == &zero_address_frag); |
18c9057f ILT |
1302 | |
1303 | if (flag_mri) | |
1304 | mri_comment_end (stop, stopc); | |
1305 | ||
6efd877d KR |
1306 | demand_empty_rest_of_line (); |
1307 | } /* s_comm() */ | |
fecd2382 | 1308 | |
1356d77d ILT |
1309 | /* The MRI COMMON pseudo-op. We handle this by creating a common |
1310 | symbol with the appropriate name. We make s_space do the right | |
1311 | thing by increasing the size. */ | |
1312 | ||
1313 | void | |
1314 | s_mri_common (small) | |
1315 | int small; | |
1316 | { | |
1317 | char *name; | |
1318 | char c; | |
1319 | char *alc = NULL; | |
1320 | symbolS *sym; | |
1321 | offsetT align; | |
18c9057f ILT |
1322 | char *stop = NULL; |
1323 | char stopc; | |
1356d77d ILT |
1324 | |
1325 | if (! flag_mri) | |
1326 | { | |
1327 | s_comm (0); | |
1328 | return; | |
1329 | } | |
1330 | ||
18c9057f ILT |
1331 | stop = mri_comment_field (&stopc); |
1332 | ||
1356d77d ILT |
1333 | SKIP_WHITESPACE (); |
1334 | ||
1335 | name = input_line_pointer; | |
1336 | if (! isdigit ((unsigned char) *name)) | |
1337 | c = get_symbol_end (); | |
1338 | else | |
1339 | { | |
1340 | do | |
1341 | { | |
1342 | ++input_line_pointer; | |
1343 | } | |
1344 | while (isdigit ((unsigned char) *input_line_pointer)); | |
1345 | c = *input_line_pointer; | |
1346 | *input_line_pointer = '\0'; | |
1347 | ||
7e047ac2 | 1348 | if (line_label != NULL) |
1356d77d | 1349 | { |
7e047ac2 | 1350 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) |
1356d77d ILT |
1351 | + (input_line_pointer - name) |
1352 | + 1); | |
7e047ac2 | 1353 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); |
1356d77d ILT |
1354 | name = alc; |
1355 | } | |
1356 | } | |
1357 | ||
1358 | sym = symbol_find_or_make (name); | |
1359 | *input_line_pointer = c; | |
1360 | if (alc != NULL) | |
1361 | free (alc); | |
1362 | ||
1363 | if (*input_line_pointer != ',') | |
1364 | align = 0; | |
1365 | else | |
1366 | { | |
1367 | ++input_line_pointer; | |
1368 | align = get_absolute_expression (); | |
1369 | } | |
1370 | ||
1371 | if (S_IS_DEFINED (sym)) | |
1372 | { | |
1373 | #if defined (S_IS_COMMON) || defined (BFD_ASSEMBLER) | |
1374 | if (! S_IS_COMMON (sym)) | |
1375 | #endif | |
1376 | { | |
1377 | as_bad ("attempt to re-define symbol `%s'", S_GET_NAME (sym)); | |
18c9057f | 1378 | mri_comment_end (stop, stopc); |
1356d77d ILT |
1379 | ignore_rest_of_line (); |
1380 | return; | |
1381 | } | |
1382 | } | |
1383 | ||
1384 | S_SET_EXTERNAL (sym); | |
1385 | mri_common_symbol = sym; | |
1386 | ||
1387 | #ifdef S_SET_ALIGN | |
1388 | if (align != 0) | |
1389 | S_SET_ALIGN (sym, align); | |
1390 | #endif | |
1391 | ||
7e047ac2 | 1392 | if (line_label != NULL) |
1356d77d | 1393 | { |
7e047ac2 ILT |
1394 | line_label->sy_value.X_op = O_symbol; |
1395 | line_label->sy_value.X_add_symbol = sym; | |
1396 | line_label->sy_value.X_add_number = S_GET_VALUE (sym); | |
1397 | line_label->sy_frag = &zero_address_frag; | |
1398 | S_SET_SEGMENT (line_label, expr_section); | |
1356d77d ILT |
1399 | } |
1400 | ||
1401 | /* FIXME: We just ignore the small argument, which distinguishes | |
1402 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1403 | ||
1404 | /* Ignore the type and hptype. */ | |
1405 | if (*input_line_pointer == ',') | |
1406 | input_line_pointer += 2; | |
1407 | if (*input_line_pointer == ',') | |
1408 | input_line_pointer += 2; | |
18c9057f ILT |
1409 | |
1410 | mri_comment_end (stop, stopc); | |
1411 | ||
1356d77d ILT |
1412 | demand_empty_rest_of_line (); |
1413 | } | |
1414 | ||
fecd2382 | 1415 | void |
604633ae ILT |
1416 | s_data (ignore) |
1417 | int ignore; | |
fecd2382 | 1418 | { |
ffffc8fb | 1419 | segT section; |
6efd877d | 1420 | register int temp; |
f8701a3f | 1421 | |
6efd877d | 1422 | temp = get_absolute_expression (); |
def66e24 | 1423 | if (flag_readonly_data_in_text) |
ffffc8fb ILT |
1424 | { |
1425 | section = text_section; | |
1426 | temp += 1000; | |
1427 | } | |
1428 | else | |
1429 | section = data_section; | |
1430 | ||
ffffc8fb | 1431 | subseg_set (section, (subsegT) temp); |
f8701a3f | 1432 | |
9471a360 | 1433 | #ifdef OBJ_VMS |
6efd877d | 1434 | const_flag = 0; |
fecd2382 | 1435 | #endif |
6efd877d | 1436 | demand_empty_rest_of_line (); |
fecd2382 RP |
1437 | } |
1438 | ||
9a7d824a | 1439 | /* Handle the .appfile pseudo-op. This is automatically generated by |
86038ada ILT |
1440 | do_scrub_chars when a preprocessor # line comment is seen with a |
1441 | file name. This default definition may be overridden by the object | |
1442 | or CPU specific pseudo-ops. This function is also the default | |
1443 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1444 | .file. */ | |
9a7d824a | 1445 | |
6efd877d | 1446 | void |
9a7d824a ILT |
1447 | s_app_file (appfile) |
1448 | int appfile; | |
6efd877d KR |
1449 | { |
1450 | register char *s; | |
1451 | int length; | |
f8701a3f | 1452 | |
6efd877d KR |
1453 | /* Some assemblers tolerate immediately following '"' */ |
1454 | if ((s = demand_copy_string (&length)) != 0) | |
1455 | { | |
9a7d824a ILT |
1456 | /* If this is a fake .appfile, a fake newline was inserted into |
1457 | the buffer. Passing -2 to new_logical_line tells it to | |
1458 | account for it. */ | |
1459 | new_logical_line (s, appfile ? -2 : -1); | |
cef72a92 ILT |
1460 | |
1461 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
1462 | backquote. */ | |
1463 | if (flag_m68k_mri | |
1464 | && *input_line_pointer == '\'' | |
1465 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1466 | ++input_line_pointer; | |
1467 | ||
6efd877d | 1468 | demand_empty_rest_of_line (); |
9a7d824a ILT |
1469 | #ifdef LISTING |
1470 | if (listing) | |
1471 | listing_source_file (s); | |
1472 | #endif | |
6efd877d | 1473 | } |
2209b19c KR |
1474 | #ifdef obj_app_file |
1475 | obj_app_file (s); | |
40324362 KR |
1476 | #endif |
1477 | } | |
fecd2382 | 1478 | |
9a7d824a | 1479 | /* Handle the .appline pseudo-op. This is automatically generated by |
86038ada ILT |
1480 | do_scrub_chars when a preprocessor # line comment is seen. This |
1481 | default definition may be overridden by the object or CPU specific | |
1482 | pseudo-ops. */ | |
9a7d824a ILT |
1483 | |
1484 | void | |
604633ae ILT |
1485 | s_app_line (ignore) |
1486 | int ignore; | |
9a7d824a ILT |
1487 | { |
1488 | int l; | |
1489 | ||
1490 | /* The given number is that of the next line. */ | |
1491 | l = get_absolute_expression () - 1; | |
931a8fab KR |
1492 | if (l < 0) |
1493 | /* Some of the back ends can't deal with non-positive line numbers. | |
1494 | Besides, it's silly. */ | |
1495 | as_warn ("Line numbers must be positive; line number %d rejected.", l+1); | |
1496 | else | |
1497 | { | |
1498 | new_logical_line ((char *) NULL, l); | |
9a7d824a | 1499 | #ifdef LISTING |
931a8fab KR |
1500 | if (listing) |
1501 | listing_source_line (l); | |
9a7d824a | 1502 | #endif |
931a8fab | 1503 | } |
9a7d824a ILT |
1504 | demand_empty_rest_of_line (); |
1505 | } | |
1506 | ||
e28c40d7 ILT |
1507 | /* Handle the .end pseudo-op. Actually, the real work is done in |
1508 | read_a_source_file. */ | |
1509 | ||
1510 | void | |
1511 | s_end (ignore) | |
1512 | int ignore; | |
1513 | { | |
1514 | if (flag_mri) | |
1515 | { | |
1516 | /* The MRI assembler permits the start symbol to follow .end, | |
1517 | but we don't support that. */ | |
1518 | SKIP_WHITESPACE (); | |
18c9057f ILT |
1519 | if (! is_end_of_line[(unsigned char) *input_line_pointer] |
1520 | && *input_line_pointer != '*' | |
1521 | && *input_line_pointer != '!') | |
e28c40d7 ILT |
1522 | as_warn ("start address not supported"); |
1523 | } | |
1524 | } | |
1525 | ||
42ac8fa8 ILT |
1526 | /* Handle the .err pseudo-op. */ |
1527 | ||
1528 | void | |
1529 | s_err (ignore) | |
1530 | int ignore; | |
1531 | { | |
1532 | as_bad (".err encountered"); | |
1533 | demand_empty_rest_of_line (); | |
1534 | } | |
1535 | ||
e28c40d7 ILT |
1536 | /* Handle the MRI fail pseudo-op. */ |
1537 | ||
1538 | void | |
1539 | s_fail (ignore) | |
1540 | int ignore; | |
1541 | { | |
1542 | offsetT temp; | |
18c9057f ILT |
1543 | char *stop = NULL; |
1544 | char stopc; | |
1545 | ||
1546 | if (flag_mri) | |
1547 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
1548 | |
1549 | temp = get_absolute_expression (); | |
1550 | if (temp >= 500) | |
1551 | as_warn (".fail %ld encountered", (long) temp); | |
1552 | else | |
1553 | as_bad (".fail %ld encountered", (long) temp); | |
18c9057f ILT |
1554 | |
1555 | if (flag_mri) | |
1556 | mri_comment_end (stop, stopc); | |
1557 | ||
e28c40d7 ILT |
1558 | demand_empty_rest_of_line (); |
1559 | } | |
1560 | ||
6efd877d | 1561 | void |
604633ae ILT |
1562 | s_fill (ignore) |
1563 | int ignore; | |
6efd877d KR |
1564 | { |
1565 | long temp_repeat = 0; | |
1566 | long temp_size = 1; | |
1567 | register long temp_fill = 0; | |
1568 | char *p; | |
f8701a3f | 1569 | |
624c91d1 KR |
1570 | #ifdef md_flush_pending_output |
1571 | md_flush_pending_output (); | |
1572 | #endif | |
7c2d4011 | 1573 | |
6efd877d KR |
1574 | temp_repeat = get_absolute_expression (); |
1575 | if (*input_line_pointer == ',') | |
1576 | { | |
1577 | input_line_pointer++; | |
1578 | temp_size = get_absolute_expression (); | |
1579 | if (*input_line_pointer == ',') | |
7c2d4011 SC |
1580 | { |
1581 | input_line_pointer++; | |
6efd877d | 1582 | temp_fill = get_absolute_expression (); |
fecd2382 | 1583 | } |
6efd877d | 1584 | } |
c8863a58 | 1585 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ |
fecd2382 | 1586 | #define BSD_FILL_SIZE_CROCK_8 (8) |
6efd877d KR |
1587 | if (temp_size > BSD_FILL_SIZE_CROCK_8) |
1588 | { | |
1589 | as_warn (".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8); | |
1590 | temp_size = BSD_FILL_SIZE_CROCK_8; | |
1591 | } | |
1592 | if (temp_size < 0) | |
1593 | { | |
1594 | as_warn ("Size negative: .fill ignored."); | |
1595 | temp_size = 0; | |
1596 | } | |
1597 | else if (temp_repeat <= 0) | |
1598 | { | |
1599 | as_warn ("Repeat < 0, .fill ignored"); | |
1600 | temp_size = 0; | |
1601 | } | |
7fd3560a | 1602 | |
6efd877d KR |
1603 | if (temp_size && !need_pass_2) |
1604 | { | |
1605 | p = frag_var (rs_fill, (int) temp_size, (int) temp_size, (relax_substateT) 0, (symbolS *) 0, temp_repeat, (char *) 0); | |
604633ae | 1606 | memset (p, 0, (unsigned int) temp_size); |
c8863a58 KR |
1607 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
1608 | * flavoured AS. The following bizzare behaviour is to be | |
1609 | * compatible with above. I guess they tried to take up to 8 | |
1610 | * bytes from a 4-byte expression and they forgot to sign | |
1611 | * extend. Un*x Sux. */ | |
fecd2382 | 1612 | #define BSD_FILL_SIZE_CROCK_4 (4) |
604633ae | 1613 | md_number_to_chars (p, (valueT) temp_fill, |
c8863a58 KR |
1614 | (temp_size > BSD_FILL_SIZE_CROCK_4 |
1615 | ? BSD_FILL_SIZE_CROCK_4 | |
1616 | : (int) temp_size)); | |
1617 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
1618 | * but emits no error message because it seems a legal thing to do. | |
1619 | * It is a degenerate case of .fill but could be emitted by a compiler. | |
1620 | */ | |
6efd877d | 1621 | } |
6efd877d | 1622 | demand_empty_rest_of_line (); |
f8701a3f SC |
1623 | } |
1624 | ||
6efd877d | 1625 | void |
604633ae ILT |
1626 | s_globl (ignore) |
1627 | int ignore; | |
6efd877d | 1628 | { |
40324362 KR |
1629 | char *name; |
1630 | int c; | |
1631 | symbolS *symbolP; | |
18c9057f ILT |
1632 | char *stop = NULL; |
1633 | char stopc; | |
1634 | ||
1635 | if (flag_mri) | |
1636 | stop = mri_comment_field (&stopc); | |
fecd2382 | 1637 | |
6efd877d KR |
1638 | do |
1639 | { | |
1640 | name = input_line_pointer; | |
1641 | c = get_symbol_end (); | |
1642 | symbolP = symbol_find_or_make (name); | |
1643 | *input_line_pointer = c; | |
1644 | SKIP_WHITESPACE (); | |
1645 | S_SET_EXTERNAL (symbolP); | |
1646 | if (c == ',') | |
1647 | { | |
1648 | input_line_pointer++; | |
1649 | SKIP_WHITESPACE (); | |
1650 | if (*input_line_pointer == '\n') | |
1651 | c = '\n'; | |
1652 | } | |
1653 | } | |
1654 | while (c == ','); | |
18c9057f ILT |
1655 | |
1656 | if (flag_mri) | |
1657 | mri_comment_end (stop, stopc); | |
1658 | ||
6efd877d | 1659 | demand_empty_rest_of_line (); |
40324362 | 1660 | } |
6efd877d | 1661 | |
7e047ac2 ILT |
1662 | /* Handle the MRI IRP and IRPC pseudo-ops. */ |
1663 | ||
1664 | void | |
1665 | s_irp (irpc) | |
1666 | int irpc; | |
1667 | { | |
1668 | char *file; | |
1669 | unsigned int line; | |
1670 | sb s; | |
1671 | const char *err; | |
1672 | sb out; | |
1673 | ||
1674 | as_where (&file, &line); | |
1675 | ||
1676 | sb_new (&s); | |
1677 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1678 | sb_add_char (&s, *input_line_pointer++); | |
1679 | ||
1680 | sb_new (&out); | |
1681 | ||
1682 | err = expand_irp (irpc, 0, &s, &out, get_line_sb, '\0'); | |
1683 | if (err != NULL) | |
1684 | as_bad_where (file, line, "%s", err); | |
1685 | ||
1686 | sb_kill (&s); | |
1687 | ||
1688 | input_scrub_include_sb (&out, input_line_pointer); | |
1689 | sb_kill (&out); | |
1690 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1691 | } | |
1692 | ||
7d3741ed ILT |
1693 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark |
1694 | the section to only be linked once. However, this is not supported | |
1695 | by most object file formats. This takes an optional argument, | |
1696 | which is what to do about duplicates. */ | |
1697 | ||
1698 | void | |
1699 | s_linkonce (ignore) | |
1700 | int ignore; | |
1701 | { | |
1702 | enum linkonce_type type; | |
1703 | ||
1704 | SKIP_WHITESPACE (); | |
1705 | ||
1706 | type = LINKONCE_DISCARD; | |
1707 | ||
1708 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1709 | { | |
1710 | char *s; | |
1711 | char c; | |
1712 | ||
1713 | s = input_line_pointer; | |
1714 | c = get_symbol_end (); | |
1715 | if (strcasecmp (s, "discard") == 0) | |
1716 | type = LINKONCE_DISCARD; | |
1717 | else if (strcasecmp (s, "one_only") == 0) | |
1718 | type = LINKONCE_ONE_ONLY; | |
1719 | else if (strcasecmp (s, "same_size") == 0) | |
1720 | type = LINKONCE_SAME_SIZE; | |
1721 | else if (strcasecmp (s, "same_contents") == 0) | |
1722 | type = LINKONCE_SAME_CONTENTS; | |
1723 | else | |
1724 | as_warn ("unrecognized .linkonce type `%s'", s); | |
1725 | ||
1726 | *input_line_pointer = c; | |
1727 | } | |
1728 | ||
1729 | #ifdef obj_handle_link_once | |
1730 | obj_handle_link_once (type); | |
1731 | #else /* ! defined (obj_handle_link_once) */ | |
1732 | #ifdef BFD_ASSEMBLER | |
1733 | { | |
1734 | flagword flags; | |
1735 | ||
1736 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
1737 | as_warn (".linkonce is not supported for this object file format"); | |
1738 | ||
1739 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
1740 | flags |= SEC_LINK_ONCE; | |
1741 | switch (type) | |
1742 | { | |
1743 | default: | |
1744 | abort (); | |
1745 | case LINKONCE_DISCARD: | |
1746 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
1747 | break; | |
1748 | case LINKONCE_ONE_ONLY: | |
1749 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
1750 | break; | |
1751 | case LINKONCE_SAME_SIZE: | |
1752 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
1753 | break; | |
1754 | case LINKONCE_SAME_CONTENTS: | |
1755 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
1756 | break; | |
1757 | } | |
1758 | if (! bfd_set_section_flags (stdoutput, now_seg, flags)) | |
1759 | as_bad ("bfd_set_section_flags: %s", | |
1760 | bfd_errmsg (bfd_get_error ())); | |
1761 | } | |
1762 | #else /* ! defined (BFD_ASSEMBLER) */ | |
1763 | as_warn (".linkonce is not supported for this object file format"); | |
1764 | #endif /* ! defined (BFD_ASSEMBLER) */ | |
1765 | #endif /* ! defined (obj_handle_link_once) */ | |
1766 | ||
1767 | demand_empty_rest_of_line (); | |
1768 | } | |
1769 | ||
6efd877d KR |
1770 | void |
1771 | s_lcomm (needs_align) | |
c8863a58 KR |
1772 | /* 1 if this was a ".bss" directive, which may require a 3rd argument |
1773 | (alignment); 0 if it was an ".lcomm" (2 args only) */ | |
1774 | int needs_align; | |
fecd2382 | 1775 | { |
6efd877d KR |
1776 | register char *name; |
1777 | register char c; | |
1778 | register char *p; | |
1779 | register int temp; | |
1780 | register symbolS *symbolP; | |
9a7d824a ILT |
1781 | segT current_seg = now_seg; |
1782 | subsegT current_subseg = now_subseg; | |
6efd877d KR |
1783 | const int max_alignment = 15; |
1784 | int align = 0; | |
9a7d824a | 1785 | segT bss_seg = bss_section; |
6efd877d KR |
1786 | |
1787 | name = input_line_pointer; | |
1788 | c = get_symbol_end (); | |
1789 | p = input_line_pointer; | |
1790 | *p = c; | |
1791 | SKIP_WHITESPACE (); | |
46b81190 ILT |
1792 | |
1793 | /* Accept an optional comma after the name. The comma used to be | |
1794 | required, but Irix 5 cc does not generate it. */ | |
1795 | if (*input_line_pointer == ',') | |
6efd877d | 1796 | { |
46b81190 ILT |
1797 | ++input_line_pointer; |
1798 | SKIP_WHITESPACE (); | |
6efd877d | 1799 | } |
f8701a3f | 1800 | |
6efd877d KR |
1801 | if (*input_line_pointer == '\n') |
1802 | { | |
1803 | as_bad ("Missing size expression"); | |
1804 | return; | |
1805 | } | |
f8701a3f | 1806 | |
6efd877d KR |
1807 | if ((temp = get_absolute_expression ()) < 0) |
1808 | { | |
1809 | as_warn ("BSS length (%d.) <0! Ignored.", temp); | |
1810 | ignore_rest_of_line (); | |
1811 | return; | |
1812 | } | |
f8701a3f | 1813 | |
2ef7731d | 1814 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
a2a5a4fa KR |
1815 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour |
1816 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
46b81190 | 1817 | { |
a2a5a4fa KR |
1818 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ |
1819 | if (temp <= bfd_get_gp_size (stdoutput)) | |
1820 | { | |
1821 | bss_seg = subseg_new (".sbss", 1); | |
1822 | seg_info (bss_seg)->bss = 1; | |
1823 | } | |
46b81190 | 1824 | } |
9a7d824a | 1825 | #endif |
ede7bc1c SC |
1826 | if (!needs_align) |
1827 | { | |
1828 | /* FIXME. This needs to be machine independent. */ | |
9d90491e ILT |
1829 | if (temp >= 8) |
1830 | align = 3; | |
1831 | else if (temp >= 4) | |
ede7bc1c SC |
1832 | align = 2; |
1833 | else if (temp >= 2) | |
1834 | align = 1; | |
1835 | else | |
c71a604a | 1836 | align = 0; |
ede7bc1c SC |
1837 | |
1838 | record_alignment(bss_seg, align); | |
1839 | } | |
9a7d824a | 1840 | |
6efd877d KR |
1841 | if (needs_align) |
1842 | { | |
1843 | align = 0; | |
1844 | SKIP_WHITESPACE (); | |
1845 | if (*input_line_pointer != ',') | |
1846 | { | |
1847 | as_bad ("Expected comma after size"); | |
1848 | ignore_rest_of_line (); | |
1849 | return; | |
1850 | } | |
1851 | input_line_pointer++; | |
1852 | SKIP_WHITESPACE (); | |
1853 | if (*input_line_pointer == '\n') | |
1854 | { | |
1855 | as_bad ("Missing alignment"); | |
1856 | return; | |
1857 | } | |
1858 | align = get_absolute_expression (); | |
1859 | if (align > max_alignment) | |
1860 | { | |
1861 | align = max_alignment; | |
1862 | as_warn ("Alignment too large: %d. assumed.", align); | |
1863 | } | |
1864 | else if (align < 0) | |
1865 | { | |
1866 | align = 0; | |
1867 | as_warn ("Alignment negative. 0 assumed."); | |
1868 | } | |
9a7d824a | 1869 | record_alignment (bss_seg, align); |
6efd877d | 1870 | } /* if needs align */ |
4075afe1 KR |
1871 | else |
1872 | { | |
1873 | /* Assume some objects may require alignment on some systems. */ | |
1874 | #ifdef TC_ALPHA | |
1875 | if (temp > 1) | |
1876 | { | |
1877 | align = ffs (temp) - 1; | |
1878 | if (temp % (1 << align)) | |
1879 | abort (); | |
1880 | } | |
1881 | #endif | |
1882 | } | |
f8701a3f | 1883 | |
6efd877d KR |
1884 | *p = 0; |
1885 | symbolP = symbol_find_or_make (name); | |
1886 | *p = c; | |
f8701a3f | 1887 | |
6efd877d | 1888 | if ( |
fecd2382 | 1889 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
1890 | S_GET_OTHER (symbolP) == 0 && |
1891 | S_GET_DESC (symbolP) == 0 && | |
fecd2382 | 1892 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
9a7d824a | 1893 | (S_GET_SEGMENT (symbolP) == bss_seg |
6efd877d KR |
1894 | || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0))) |
1895 | { | |
604633ae | 1896 | char *pfrag; |
85825401 | 1897 | |
9a7d824a | 1898 | subseg_set (bss_seg, 1); |
85825401 ILT |
1899 | |
1900 | if (align) | |
1901 | frag_align (align, 0); | |
1902 | /* detach from old frag */ | |
9a7d824a | 1903 | if (S_GET_SEGMENT (symbolP) == bss_seg) |
85825401 ILT |
1904 | symbolP->sy_frag->fr_symbol = NULL; |
1905 | ||
1906 | symbolP->sy_frag = frag_now; | |
604633ae ILT |
1907 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP, |
1908 | temp, (char *)0); | |
1909 | *pfrag = 0; | |
f8701a3f | 1910 | |
9a7d824a | 1911 | S_SET_SEGMENT (symbolP, bss_seg); |
85825401 | 1912 | |
fecd2382 | 1913 | #ifdef OBJ_COFF |
6efd877d | 1914 | /* The symbol may already have been created with a preceding |
c8863a58 KR |
1915 | ".globl" directive -- be careful not to step on storage class |
1916 | in that case. Otherwise, set it to static. */ | |
6efd877d KR |
1917 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) |
1918 | { | |
1919 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
fecd2382 | 1920 | } |
6efd877d | 1921 | #endif /* OBJ_COFF */ |
cef72a92 ILT |
1922 | |
1923 | #ifdef S_SET_SIZE | |
1924 | S_SET_SIZE (symbolP, temp); | |
1925 | #endif | |
6efd877d KR |
1926 | } |
1927 | else | |
6ef37255 KR |
1928 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
1929 | S_GET_NAME (symbolP)); | |
f8701a3f | 1930 | |
9a7d824a | 1931 | subseg_set (current_seg, current_subseg); |
9a7d824a ILT |
1932 | |
1933 | demand_empty_rest_of_line (); | |
6efd877d | 1934 | } /* s_lcomm() */ |
fecd2382 | 1935 | |
6efd877d | 1936 | void |
604633ae ILT |
1937 | s_lsym (ignore) |
1938 | int ignore; | |
6efd877d KR |
1939 | { |
1940 | register char *name; | |
1941 | register char c; | |
1942 | register char *p; | |
6efd877d KR |
1943 | expressionS exp; |
1944 | register symbolS *symbolP; | |
1945 | ||
1946 | /* we permit ANY defined expression: BSD4.2 demands constants */ | |
1947 | name = input_line_pointer; | |
1948 | c = get_symbol_end (); | |
1949 | p = input_line_pointer; | |
1950 | *p = c; | |
1951 | SKIP_WHITESPACE (); | |
1952 | if (*input_line_pointer != ',') | |
1953 | { | |
1954 | *p = 0; | |
1955 | as_bad ("Expected comma after name \"%s\"", name); | |
1956 | *p = c; | |
1957 | ignore_rest_of_line (); | |
1958 | return; | |
1959 | } | |
1960 | input_line_pointer++; | |
b31f2abb KR |
1961 | expression (&exp); |
1962 | if (exp.X_op != O_constant | |
1963 | && exp.X_op != O_register) | |
1964 | { | |
1965 | as_bad ("bad expression"); | |
1966 | ignore_rest_of_line (); | |
1967 | return; | |
1968 | } | |
6efd877d KR |
1969 | *p = 0; |
1970 | symbolP = symbol_find_or_make (name); | |
f8701a3f | 1971 | |
c8863a58 KR |
1972 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && |
1973 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
1974 | those fields, and I can't see when they'd ever be tripped. I | |
1975 | don't think I understand why they were here so I may have | |
1976 | introduced a bug. As recently as 1.37 didn't have this test | |
1977 | anyway. xoxorich. */ | |
f8701a3f | 1978 | |
9471a360 | 1979 | if (S_GET_SEGMENT (symbolP) == undefined_section |
6efd877d KR |
1980 | && S_GET_VALUE (symbolP) == 0) |
1981 | { | |
c8863a58 KR |
1982 | /* The name might be an undefined .global symbol; be sure to |
1983 | keep the "external" bit. */ | |
b31f2abb KR |
1984 | S_SET_SEGMENT (symbolP, |
1985 | (exp.X_op == O_constant | |
1986 | ? absolute_section | |
1987 | : reg_section)); | |
1988 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
6efd877d KR |
1989 | } |
1990 | else | |
1991 | { | |
1992 | as_bad ("Symbol %s already defined", name); | |
1993 | } | |
1994 | *p = c; | |
1995 | demand_empty_rest_of_line (); | |
1996 | } /* s_lsym() */ | |
1997 | ||
7e047ac2 ILT |
1998 | /* Read a line into an sb. */ |
1999 | ||
2000 | static int | |
2001 | get_line_sb (line) | |
2002 | sb *line; | |
2003 | { | |
2004 | if (input_line_pointer >= buffer_limit) | |
2005 | { | |
2006 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2007 | if (buffer_limit == 0) | |
2008 | return 0; | |
2009 | } | |
2010 | ||
2011 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
2012 | sb_add_char (line, *input_line_pointer++); | |
42ac8fa8 ILT |
2013 | while (input_line_pointer < buffer_limit |
2014 | && is_end_of_line[(unsigned char) *input_line_pointer]) | |
7e047ac2 ILT |
2015 | { |
2016 | if (*input_line_pointer == '\n') | |
2017 | { | |
2018 | bump_line_counters (); | |
2019 | LISTING_NEWLINE (); | |
2020 | } | |
2021 | ++input_line_pointer; | |
2022 | } | |
2023 | return 1; | |
2024 | } | |
2025 | ||
2026 | /* Define a macro. This is an interface to macro.c, which is shared | |
2027 | between gas and gasp. */ | |
2028 | ||
2029 | void | |
2030 | s_macro (ignore) | |
2031 | int ignore; | |
2032 | { | |
2033 | char *file; | |
2034 | unsigned int line; | |
2035 | sb s; | |
2036 | sb label; | |
2037 | const char *err; | |
2038 | ||
2039 | as_where (&file, &line); | |
2040 | ||
2041 | sb_new (&s); | |
2042 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
2043 | sb_add_char (&s, *input_line_pointer++); | |
2044 | ||
2045 | sb_new (&label); | |
2046 | if (line_label != NULL) | |
2047 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2048 | ||
2049 | demand_empty_rest_of_line (); | |
2050 | ||
2051 | err = define_macro (0, &s, &label, get_line_sb); | |
2052 | if (err != NULL) | |
2053 | as_bad_where (file, line, "%s", err); | |
2054 | else | |
2055 | { | |
2056 | if (line_label != NULL) | |
2057 | { | |
2058 | S_SET_SEGMENT (line_label, undefined_section); | |
2059 | S_SET_VALUE (line_label, 0); | |
2060 | line_label->sy_frag = &zero_address_frag; | |
2061 | } | |
2062 | } | |
2063 | ||
2064 | sb_kill (&s); | |
2065 | } | |
2066 | ||
2067 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2068 | expansion. */ | |
2069 | ||
2070 | void | |
2071 | s_mexit (ignore) | |
2072 | int ignore; | |
2073 | { | |
2074 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2075 | } | |
2076 | ||
20710f1c ILT |
2077 | /* Switch in and out of MRI mode. */ |
2078 | ||
2079 | void | |
2080 | s_mri (ignore) | |
2081 | int ignore; | |
2082 | { | |
2083 | int on, old_flag; | |
2084 | ||
2085 | on = get_absolute_expression (); | |
2086 | old_flag = flag_mri; | |
2087 | if (on != 0) | |
2088 | { | |
2089 | flag_mri = 1; | |
2090 | #ifdef TC_M68K | |
2091 | flag_m68k_mri = 1; | |
2092 | #endif | |
2093 | } | |
2094 | else | |
2095 | { | |
2096 | flag_mri = 0; | |
2097 | flag_m68k_mri = 0; | |
2098 | } | |
2099 | ||
2100 | #ifdef MRI_MODE_CHANGE | |
2101 | if (on != old_flag) | |
2102 | MRI_MODE_CHANGE (on); | |
2103 | #endif | |
2104 | ||
2105 | demand_empty_rest_of_line (); | |
2106 | } | |
2107 | ||
e28c40d7 ILT |
2108 | /* Handle changing the location counter. */ |
2109 | ||
2110 | static void | |
2111 | do_org (segment, exp, fill) | |
2112 | segT segment; | |
2113 | expressionS *exp; | |
2114 | int fill; | |
2115 | { | |
2116 | if (segment != now_seg && segment != absolute_section) | |
2117 | as_bad ("invalid segment \"%s\"; segment \"%s\" assumed", | |
2118 | segment_name (segment), segment_name (now_seg)); | |
2119 | ||
2120 | if (now_seg == absolute_section) | |
2121 | { | |
2122 | if (fill != 0) | |
2123 | as_warn ("ignoring fill value in absolute section"); | |
2124 | if (exp->X_op != O_constant) | |
2125 | { | |
2126 | as_bad ("only constant offsets supported in absolute section"); | |
2127 | exp->X_add_number = 0; | |
2128 | } | |
2129 | abs_section_offset = exp->X_add_number; | |
2130 | } | |
2131 | else | |
2132 | { | |
2133 | char *p; | |
2134 | ||
2135 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp->X_add_symbol, | |
2136 | exp->X_add_number, (char *) NULL); | |
2137 | *p = fill; | |
2138 | } | |
2139 | } | |
2140 | ||
6efd877d | 2141 | void |
604633ae ILT |
2142 | s_org (ignore) |
2143 | int ignore; | |
6efd877d KR |
2144 | { |
2145 | register segT segment; | |
2146 | expressionS exp; | |
2147 | register long temp_fill; | |
e28c40d7 | 2148 | |
42ac8fa8 ILT |
2149 | /* The m68k MRI assembler has a different meaning for .org. It |
2150 | means to create an absolute section at a given address. We can't | |
2151 | support that--use a linker script instead. */ | |
cef72a92 | 2152 | if (flag_m68k_mri) |
69e077f3 ILT |
2153 | { |
2154 | as_bad ("MRI style ORG pseudo-op not supported"); | |
2155 | ignore_rest_of_line (); | |
2156 | return; | |
2157 | } | |
2158 | ||
9471a360 KR |
2159 | /* Don't believe the documentation of BSD 4.2 AS. There is no such |
2160 | thing as a sub-segment-relative origin. Any absolute origin is | |
2161 | given a warning, then assumed to be segment-relative. Any | |
2162 | segmented origin expression ("foo+42") had better be in the right | |
2163 | segment or the .org is ignored. | |
2164 | ||
2165 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2166 | we never know sub-segment sizes when we are reading code. BSD | |
2167 | will crash trying to emit negative numbers of filler bytes in | |
2168 | certain .orgs. We don't crash, but see as-write for that code. | |
2169 | ||
2170 | Don't make frag if need_pass_2==1. */ | |
6efd877d KR |
2171 | segment = get_known_segmented_expression (&exp); |
2172 | if (*input_line_pointer == ',') | |
2173 | { | |
2174 | input_line_pointer++; | |
2175 | temp_fill = get_absolute_expression (); | |
2176 | } | |
2177 | else | |
2178 | temp_fill = 0; | |
e28c40d7 | 2179 | |
6efd877d | 2180 | if (!need_pass_2) |
e28c40d7 ILT |
2181 | do_org (segment, &exp, temp_fill); |
2182 | ||
6efd877d KR |
2183 | demand_empty_rest_of_line (); |
2184 | } /* s_org() */ | |
2185 | ||
e14994d9 ILT |
2186 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be |
2187 | called by the obj-format routine which handles section changing | |
2188 | when in MRI mode. It will create a new section, and return it. It | |
c7a89bde ILT |
2189 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), |
2190 | 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the | |
2191 | flags will be set in the section. */ | |
e14994d9 ILT |
2192 | |
2193 | void | |
2194 | s_mri_sect (type) | |
2195 | char *type; | |
2196 | { | |
42ac8fa8 ILT |
2197 | #ifdef TC_M68K |
2198 | ||
e14994d9 ILT |
2199 | char *name; |
2200 | char c; | |
2201 | segT seg; | |
2202 | ||
2203 | SKIP_WHITESPACE (); | |
2204 | ||
2205 | name = input_line_pointer; | |
2206 | if (! isdigit ((unsigned char) *name)) | |
2207 | c = get_symbol_end (); | |
2208 | else | |
2209 | { | |
2210 | do | |
2211 | { | |
2212 | ++input_line_pointer; | |
2213 | } | |
2214 | while (isdigit ((unsigned char) *input_line_pointer)); | |
2215 | c = *input_line_pointer; | |
2216 | *input_line_pointer = '\0'; | |
2217 | } | |
2218 | ||
c7a89bde | 2219 | name = xstrdup (name); |
e14994d9 ILT |
2220 | |
2221 | *input_line_pointer = c; | |
2222 | ||
2223 | seg = subseg_new (name, 0); | |
2224 | ||
2225 | if (*input_line_pointer == ',') | |
2226 | { | |
2227 | int align; | |
2228 | ||
2229 | ++input_line_pointer; | |
2230 | align = get_absolute_expression (); | |
2231 | record_alignment (seg, align); | |
2232 | } | |
2233 | ||
c7a89bde | 2234 | *type = 'C'; |
e14994d9 ILT |
2235 | if (*input_line_pointer == ',') |
2236 | { | |
2237 | c = *++input_line_pointer; | |
2238 | c = toupper ((unsigned char) c); | |
2239 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') | |
2240 | *type = c; | |
2241 | else | |
2242 | as_bad ("unrecognized section type"); | |
2243 | ++input_line_pointer; | |
2244 | ||
2245 | #ifdef BFD_ASSEMBLER | |
2246 | { | |
2247 | flagword flags; | |
2248 | ||
2249 | flags = SEC_NO_FLAGS; | |
ca232972 | 2250 | if (*type == 'C') |
c7a89bde ILT |
2251 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; |
2252 | else if (*type == 'D' || *type == 'M') | |
2253 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
ca232972 | 2254 | else if (*type == 'R') |
c7a89bde | 2255 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; |
e14994d9 ILT |
2256 | if (flags != SEC_NO_FLAGS) |
2257 | { | |
2258 | if (! bfd_set_section_flags (stdoutput, seg, flags)) | |
2259 | as_warn ("error setting flags for \"%s\": %s", | |
ca232972 | 2260 | bfd_section_name (stdoutput, seg), |
e14994d9 ILT |
2261 | bfd_errmsg (bfd_get_error ())); |
2262 | } | |
2263 | } | |
2264 | #endif | |
2265 | } | |
2266 | ||
2267 | /* Ignore the HP type. */ | |
2268 | if (*input_line_pointer == ',') | |
2269 | input_line_pointer += 2; | |
2270 | ||
2271 | demand_empty_rest_of_line (); | |
42ac8fa8 ILT |
2272 | |
2273 | #else /* ! TC_M68K */ | |
2274 | #ifdef TC_I960 | |
2275 | ||
2276 | char *name; | |
2277 | char c; | |
2278 | segT seg; | |
2279 | ||
2280 | SKIP_WHITESPACE (); | |
2281 | ||
2282 | name = input_line_pointer; | |
2283 | c = get_symbol_end (); | |
2284 | ||
c7a89bde | 2285 | name = xstrdup (name); |
42ac8fa8 ILT |
2286 | |
2287 | *input_line_pointer = c; | |
2288 | ||
2289 | seg = subseg_new (name, 0); | |
2290 | ||
2291 | if (*input_line_pointer != ',') | |
2292 | *type = 'C'; | |
2293 | else | |
2294 | { | |
2295 | char *sectype; | |
2296 | ||
2297 | ++input_line_pointer; | |
2298 | SKIP_WHITESPACE (); | |
2299 | sectype = input_line_pointer; | |
2300 | c = get_symbol_end (); | |
2301 | if (*sectype == '\0') | |
2302 | *type = 'C'; | |
2303 | else if (strcasecmp (sectype, "text") == 0) | |
2304 | *type = 'C'; | |
2305 | else if (strcasecmp (sectype, "data") == 0) | |
2306 | *type = 'D'; | |
2307 | else if (strcasecmp (sectype, "romdata") == 0) | |
2308 | *type = 'R'; | |
2309 | else | |
2310 | as_warn ("unrecognized section type `%s'", sectype); | |
2311 | *input_line_pointer = c; | |
2312 | } | |
2313 | ||
2314 | if (*input_line_pointer == ',') | |
2315 | { | |
2316 | char *seccmd; | |
2317 | ||
2318 | ++input_line_pointer; | |
2319 | SKIP_WHITESPACE (); | |
2320 | seccmd = input_line_pointer; | |
2321 | c = get_symbol_end (); | |
2322 | if (strcasecmp (seccmd, "absolute") == 0) | |
2323 | { | |
2324 | as_bad ("absolute sections are not supported"); | |
2325 | *input_line_pointer = c; | |
2326 | ignore_rest_of_line (); | |
2327 | return; | |
2328 | } | |
2329 | else if (strcasecmp (seccmd, "align") == 0) | |
2330 | { | |
2331 | int align; | |
2332 | ||
2333 | *input_line_pointer = c; | |
2334 | align = get_absolute_expression (); | |
2335 | record_alignment (seg, align); | |
2336 | } | |
2337 | else | |
2338 | { | |
2339 | as_warn ("unrecognized section command `%s'", seccmd); | |
2340 | *input_line_pointer = c; | |
2341 | } | |
2342 | } | |
2343 | ||
2344 | demand_empty_rest_of_line (); | |
2345 | ||
2346 | #else /* ! TC_I960 */ | |
2347 | /* The MRI assembler seems to use different forms of .sect for | |
2348 | different targets. */ | |
2349 | abort (); | |
2350 | #endif /* ! TC_I960 */ | |
2351 | #endif /* ! TC_M68K */ | |
2352 | } | |
2353 | ||
2354 | /* Handle the .print pseudo-op. */ | |
2355 | ||
2356 | void | |
2357 | s_print (ignore) | |
2358 | int ignore; | |
2359 | { | |
2360 | char *s; | |
2361 | int len; | |
2362 | ||
2363 | s = demand_copy_C_string (&len); | |
2364 | printf ("%s\n", s); | |
2365 | demand_empty_rest_of_line (); | |
2366 | } | |
2367 | ||
2368 | /* Handle the .purgem pseudo-op. */ | |
2369 | ||
2370 | void | |
2371 | s_purgem (ignore) | |
2372 | int ignore; | |
2373 | { | |
2374 | if (is_it_end_of_statement ()) | |
2375 | { | |
2376 | demand_empty_rest_of_line (); | |
2377 | return; | |
2378 | } | |
2379 | ||
2380 | do | |
2381 | { | |
2382 | char *name; | |
2383 | char c; | |
2384 | ||
2385 | SKIP_WHITESPACE (); | |
2386 | name = input_line_pointer; | |
2387 | c = get_symbol_end (); | |
2388 | delete_macro (name); | |
2389 | *input_line_pointer = c; | |
2390 | SKIP_WHITESPACE (); | |
2391 | } | |
2392 | while (*input_line_pointer++ == ','); | |
2393 | ||
2394 | --input_line_pointer; | |
2395 | demand_empty_rest_of_line (); | |
e14994d9 ILT |
2396 | } |
2397 | ||
7e047ac2 ILT |
2398 | /* Handle the .rept pseudo-op. */ |
2399 | ||
2400 | void | |
2401 | s_rept (ignore) | |
2402 | int ignore; | |
2403 | { | |
2404 | int count; | |
2405 | sb one; | |
2406 | sb many; | |
2407 | ||
2408 | count = get_absolute_expression (); | |
2409 | ||
2410 | sb_new (&one); | |
2411 | if (! buffer_and_nest ("REPT", "ENDR", &one, get_line_sb)) | |
2412 | { | |
2413 | as_bad ("rept without endr"); | |
2414 | return; | |
2415 | } | |
2416 | ||
2417 | sb_new (&many); | |
2418 | while (count-- > 0) | |
2419 | sb_add_sb (&many, &one); | |
2420 | ||
2421 | sb_kill (&one); | |
2422 | ||
2423 | input_scrub_include_sb (&many, input_line_pointer); | |
2424 | sb_kill (&many); | |
2425 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2426 | } | |
2427 | ||
6efd877d | 2428 | void |
604633ae ILT |
2429 | s_set (ignore) |
2430 | int ignore; | |
6efd877d KR |
2431 | { |
2432 | register char *name; | |
2433 | register char delim; | |
2434 | register char *end_name; | |
2435 | register symbolS *symbolP; | |
2436 | ||
2437 | /* | |
c8863a58 KR |
2438 | * Especial apologies for the random logic: |
2439 | * this just grew, and could be parsed much more simply! | |
2440 | * Dean in haste. | |
2441 | */ | |
6efd877d KR |
2442 | name = input_line_pointer; |
2443 | delim = get_symbol_end (); | |
2444 | end_name = input_line_pointer; | |
2445 | *end_name = delim; | |
2446 | SKIP_WHITESPACE (); | |
f8701a3f | 2447 | |
6efd877d KR |
2448 | if (*input_line_pointer != ',') |
2449 | { | |
2450 | *end_name = 0; | |
2451 | as_bad ("Expected comma after name \"%s\"", name); | |
2452 | *end_name = delim; | |
2453 | ignore_rest_of_line (); | |
2454 | return; | |
2455 | } | |
2456 | ||
2457 | input_line_pointer++; | |
2458 | *end_name = 0; | |
2459 | ||
2460 | if (name[0] == '.' && name[1] == '\0') | |
2461 | { | |
2462 | /* Turn '. = mumble' into a .org mumble */ | |
2463 | register segT segment; | |
2464 | expressionS exp; | |
6efd877d KR |
2465 | |
2466 | segment = get_known_segmented_expression (&exp); | |
f8701a3f | 2467 | |
6efd877d | 2468 | if (!need_pass_2) |
e28c40d7 | 2469 | do_org (segment, &exp, 0); |
6efd877d KR |
2470 | |
2471 | *end_name = delim; | |
2472 | return; | |
2473 | } | |
2474 | ||
2475 | if ((symbolP = symbol_find (name)) == NULL | |
2476 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2477 | { | |
9471a360 | 2478 | symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag); |
fecd2382 | 2479 | #ifdef OBJ_COFF |
6efd877d KR |
2480 | /* "set" symbols are local unless otherwise specified. */ |
2481 | SF_SET_LOCAL (symbolP); | |
fecd2382 | 2482 | #endif /* OBJ_COFF */ |
f8701a3f | 2483 | |
6efd877d | 2484 | } /* make a new symbol */ |
f8701a3f | 2485 | |
6efd877d | 2486 | symbol_table_insert (symbolP); |
f8701a3f | 2487 | |
6efd877d KR |
2488 | *end_name = delim; |
2489 | pseudo_set (symbolP); | |
2490 | demand_empty_rest_of_line (); | |
2491 | } /* s_set() */ | |
fecd2382 | 2492 | |
6efd877d KR |
2493 | void |
2494 | s_space (mult) | |
2495 | int mult; | |
b53ccaac | 2496 | { |
cd3b81bd | 2497 | expressionS exp; |
931a8fab | 2498 | long temp_fill; |
cd3b81bd | 2499 | char *p = 0; |
3dce804d ILT |
2500 | char *stop = NULL; |
2501 | char stopc; | |
6efd877d | 2502 | |
a2a5a4fa KR |
2503 | #ifdef md_flush_pending_output |
2504 | md_flush_pending_output (); | |
2505 | #endif | |
2506 | ||
3dce804d | 2507 | if (flag_mri) |
18c9057f | 2508 | stop = mri_comment_field (&stopc); |
3dce804d | 2509 | |
6efd877d | 2510 | /* Just like .fill, but temp_size = 1 */ |
cd3b81bd | 2511 | expression (&exp); |
931a8fab | 2512 | if (exp.X_op == O_constant) |
6efd877d | 2513 | { |
cd3b81bd KR |
2514 | long repeat; |
2515 | ||
2516 | repeat = exp.X_add_number; | |
2517 | if (mult) | |
2518 | repeat *= mult; | |
2519 | if (repeat <= 0) | |
2520 | { | |
4026c122 ILT |
2521 | if (! flag_mri || repeat < 0) |
2522 | as_warn (".space repeat count is %s, ignored", | |
2523 | repeat ? "negative" : "zero"); | |
3dce804d | 2524 | goto getout; |
cd3b81bd KR |
2525 | } |
2526 | ||
e28c40d7 ILT |
2527 | /* If we are in the absolute section, just bump the offset. */ |
2528 | if (now_seg == absolute_section) | |
2529 | { | |
2530 | abs_section_offset += repeat; | |
3dce804d | 2531 | goto getout; |
e28c40d7 ILT |
2532 | } |
2533 | ||
1356d77d ILT |
2534 | /* If we are secretly in an MRI common section, then creating |
2535 | space just increases the size of the common symbol. */ | |
2536 | if (mri_common_symbol != NULL) | |
2537 | { | |
2538 | S_SET_VALUE (mri_common_symbol, | |
2539 | S_GET_VALUE (mri_common_symbol) + repeat); | |
3dce804d | 2540 | goto getout; |
1356d77d ILT |
2541 | } |
2542 | ||
cd3b81bd KR |
2543 | if (!need_pass_2) |
2544 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
931a8fab | 2545 | repeat, (char *) 0); |
6efd877d KR |
2546 | } |
2547 | else | |
2548 | { | |
e28c40d7 ILT |
2549 | if (now_seg == absolute_section) |
2550 | { | |
2551 | as_bad ("space allocation too complex in absolute section"); | |
2552 | subseg_set (text_section, 0); | |
2553 | } | |
1356d77d ILT |
2554 | if (mri_common_symbol != NULL) |
2555 | { | |
2556 | as_bad ("space allocation too complex in common section"); | |
2557 | mri_common_symbol = NULL; | |
2558 | } | |
cd3b81bd KR |
2559 | if (!need_pass_2) |
2560 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
2561 | make_expr_symbol (&exp), 0L, (char *) 0); | |
6efd877d | 2562 | } |
931a8fab KR |
2563 | SKIP_WHITESPACE (); |
2564 | if (*input_line_pointer == ',') | |
6efd877d | 2565 | { |
931a8fab | 2566 | input_line_pointer++; |
cd3b81bd | 2567 | temp_fill = get_absolute_expression (); |
6efd877d | 2568 | } |
cd3b81bd | 2569 | else |
6efd877d | 2570 | { |
cd3b81bd | 2571 | temp_fill = 0; |
6efd877d | 2572 | } |
cd3b81bd | 2573 | if (p) |
6efd877d | 2574 | { |
6efd877d KR |
2575 | *p = temp_fill; |
2576 | } | |
3dce804d ILT |
2577 | |
2578 | getout: | |
2579 | if (flag_mri) | |
18c9057f | 2580 | mri_comment_end (stop, stopc); |
3dce804d | 2581 | |
6efd877d | 2582 | demand_empty_rest_of_line (); |
cd3b81bd | 2583 | } |
fecd2382 | 2584 | |
e28c40d7 ILT |
2585 | /* This is like s_space, but the value is a floating point number with |
2586 | the given precision. This is for the MRI dcb.s pseudo-op and | |
2587 | friends. */ | |
2588 | ||
2589 | void | |
2590 | s_float_space (float_type) | |
2591 | int float_type; | |
2592 | { | |
2593 | offsetT count; | |
2594 | int flen; | |
2595 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
18c9057f ILT |
2596 | char *stop = NULL; |
2597 | char stopc; | |
2598 | ||
2599 | if (flag_mri) | |
2600 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
2601 | |
2602 | count = get_absolute_expression (); | |
2603 | ||
2604 | SKIP_WHITESPACE (); | |
2605 | if (*input_line_pointer != ',') | |
2606 | { | |
2607 | as_bad ("missing value"); | |
18c9057f ILT |
2608 | if (flag_mri) |
2609 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2610 | ignore_rest_of_line (); |
2611 | return; | |
2612 | } | |
2613 | ||
2614 | ++input_line_pointer; | |
2615 | ||
2616 | SKIP_WHITESPACE (); | |
2617 | ||
2618 | /* Skip any 0{letter} that may be present. Don't even check if the | |
2619 | * letter is legal. */ | |
2620 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) | |
2621 | input_line_pointer += 2; | |
2622 | ||
2623 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
2624 | with the exact digits specified. */ | |
2625 | if (input_line_pointer[0] == ':') | |
2626 | { | |
2627 | flen = hex_float (float_type, temp); | |
2628 | if (flen < 0) | |
2629 | { | |
18c9057f ILT |
2630 | if (flag_mri) |
2631 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2632 | ignore_rest_of_line (); |
2633 | return; | |
2634 | } | |
2635 | } | |
2636 | else | |
2637 | { | |
2638 | char *err; | |
2639 | ||
2640 | err = md_atof (float_type, temp, &flen); | |
2641 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
2642 | know (flen > 0); | |
2643 | if (err) | |
2644 | { | |
2645 | as_bad ("Bad floating literal: %s", err); | |
18c9057f ILT |
2646 | if (flag_mri) |
2647 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2648 | ignore_rest_of_line (); |
2649 | return; | |
2650 | } | |
2651 | } | |
2652 | ||
2653 | while (--count >= 0) | |
2654 | { | |
2655 | char *p; | |
2656 | ||
2657 | p = frag_more (flen); | |
2658 | memcpy (p, temp, (unsigned int) flen); | |
2659 | } | |
2660 | ||
18c9057f ILT |
2661 | if (flag_mri) |
2662 | mri_comment_end (stop, stopc); | |
2663 | ||
e28c40d7 ILT |
2664 | demand_empty_rest_of_line (); |
2665 | } | |
2666 | ||
2667 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
2668 | ||
2669 | void | |
2670 | s_struct (ignore) | |
2671 | int ignore; | |
2672 | { | |
18c9057f ILT |
2673 | char *stop = NULL; |
2674 | char stopc; | |
2675 | ||
2676 | if (flag_mri) | |
2677 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
2678 | abs_section_offset = get_absolute_expression (); |
2679 | subseg_set (absolute_section, 0); | |
18c9057f ILT |
2680 | if (flag_mri) |
2681 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2682 | demand_empty_rest_of_line (); |
2683 | } | |
2684 | ||
fecd2382 | 2685 | void |
604633ae ILT |
2686 | s_text (ignore) |
2687 | int ignore; | |
fecd2382 | 2688 | { |
6efd877d | 2689 | register int temp; |
f8701a3f | 2690 | |
6efd877d | 2691 | temp = get_absolute_expression (); |
9471a360 | 2692 | subseg_set (text_section, (subsegT) temp); |
6efd877d | 2693 | demand_empty_rest_of_line (); |
80d80c64 KR |
2694 | #ifdef OBJ_VMS |
2695 | const_flag &= ~IN_DEFAULT_SECTION; | |
2696 | #endif | |
6efd877d | 2697 | } /* s_text() */ |
fecd2382 | 2698 | \f |
6efd877d | 2699 | |
6efd877d KR |
2700 | void |
2701 | demand_empty_rest_of_line () | |
2702 | { | |
2703 | SKIP_WHITESPACE (); | |
58d4951d | 2704 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
2705 | { |
2706 | input_line_pointer++; | |
2707 | } | |
2708 | else | |
2709 | { | |
2710 | ignore_rest_of_line (); | |
2711 | } | |
2712 | /* Return having already swallowed end-of-line. */ | |
2713 | } /* Return pointing just after end-of-line. */ | |
fecd2382 RP |
2714 | |
2715 | void | |
6efd877d | 2716 | ignore_rest_of_line () /* For suspect lines: gives warning. */ |
fecd2382 | 2717 | { |
58d4951d | 2718 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 2719 | { |
6efd877d KR |
2720 | if (isprint (*input_line_pointer)) |
2721 | as_bad ("Rest of line ignored. First ignored character is `%c'.", | |
f8701a3f SC |
2722 | *input_line_pointer); |
2723 | else | |
6efd877d | 2724 | as_bad ("Rest of line ignored. First ignored character valued 0x%x.", |
f8701a3f SC |
2725 | *input_line_pointer); |
2726 | while (input_line_pointer < buffer_limit | |
58d4951d | 2727 | && !is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 2728 | { |
6efd877d | 2729 | input_line_pointer++; |
f8701a3f SC |
2730 | } |
2731 | } | |
6efd877d | 2732 | input_line_pointer++; /* Return pointing just after end-of-line. */ |
58d4951d | 2733 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
fecd2382 RP |
2734 | } |
2735 | ||
2736 | /* | |
2737 | * pseudo_set() | |
2738 | * | |
2739 | * In: Pointer to a symbol. | |
2740 | * Input_line_pointer->expression. | |
2741 | * | |
2742 | * Out: Input_line_pointer->just after any whitespace after expression. | |
2743 | * Tried to set symbol to value of expression. | |
2744 | * Will change symbols type, value, and frag; | |
fecd2382 RP |
2745 | */ |
2746 | void | |
f8701a3f | 2747 | pseudo_set (symbolP) |
6efd877d | 2748 | symbolS *symbolP; |
fecd2382 | 2749 | { |
6efd877d | 2750 | expressionS exp; |
daad3bbf | 2751 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
f8701a3f | 2752 | int ext; |
fecd2382 | 2753 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 2754 | |
6efd877d | 2755 | know (symbolP); /* NULL pointer is logic error. */ |
daad3bbf | 2756 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
6efd877d | 2757 | ext = S_IS_EXTERNAL (symbolP); |
fecd2382 | 2758 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 2759 | |
5ac34ac3 | 2760 | (void) expression (&exp); |
f8701a3f | 2761 | |
5ac34ac3 ILT |
2762 | if (exp.X_op == O_illegal) |
2763 | as_bad ("illegal expression; zero assumed"); | |
2764 | else if (exp.X_op == O_absent) | |
2765 | as_bad ("missing expression; zero assumed"); | |
2766 | else if (exp.X_op == O_big) | |
2767 | as_bad ("%s number invalid; zero assumed", | |
2768 | exp.X_add_number > 0 ? "bignum" : "floating point"); | |
2769 | else if (exp.X_op == O_subtract | |
2770 | && (S_GET_SEGMENT (exp.X_add_symbol) | |
2771 | == S_GET_SEGMENT (exp.X_op_symbol)) | |
2772 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) | |
2773 | && exp.X_add_symbol->sy_frag == exp.X_op_symbol->sy_frag) | |
9471a360 | 2774 | { |
5ac34ac3 ILT |
2775 | exp.X_op = O_constant; |
2776 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
2777 | - S_GET_VALUE (exp.X_op_symbol)); | |
9471a360 | 2778 | } |
5ac34ac3 ILT |
2779 | |
2780 | switch (exp.X_op) | |
9471a360 | 2781 | { |
5ac34ac3 ILT |
2782 | case O_illegal: |
2783 | case O_absent: | |
2784 | case O_big: | |
2785 | exp.X_add_number = 0; | |
2786 | /* Fall through. */ | |
2787 | case O_constant: | |
9471a360 | 2788 | S_SET_SEGMENT (symbolP, absolute_section); |
daad3bbf | 2789 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
2790 | if (ext) |
2791 | S_SET_EXTERNAL (symbolP); | |
6efd877d | 2792 | else |
6efd877d | 2793 | S_CLEAR_EXTERNAL (symbolP); |
fecd2382 | 2794 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
604633ae | 2795 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
6efd877d | 2796 | symbolP->sy_frag = &zero_address_frag; |
5ac34ac3 | 2797 | break; |
f8701a3f | 2798 | |
5ac34ac3 ILT |
2799 | case O_register: |
2800 | S_SET_SEGMENT (symbolP, reg_section); | |
604633ae | 2801 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
5ac34ac3 ILT |
2802 | symbolP->sy_frag = &zero_address_frag; |
2803 | break; | |
2804 | ||
2805 | case O_symbol: | |
ef198870 KR |
2806 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section |
2807 | || exp.X_add_number != 0) | |
5ac34ac3 | 2808 | symbolP->sy_value = exp; |
6efd877d KR |
2809 | else |
2810 | { | |
80d80c64 KR |
2811 | symbolS *s = exp.X_add_symbol; |
2812 | ||
2813 | S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s)); | |
daad3bbf | 2814 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
2815 | if (ext) |
2816 | S_SET_EXTERNAL (symbolP); | |
2817 | else | |
2818 | S_CLEAR_EXTERNAL (symbolP); | |
fecd2382 | 2819 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
5ac34ac3 | 2820 | S_SET_VALUE (symbolP, |
80d80c64 KR |
2821 | exp.X_add_number + S_GET_VALUE (s)); |
2822 | symbolP->sy_frag = s->sy_frag; | |
ef198870 | 2823 | copy_symbol_attributes (symbolP, s); |
5ac34ac3 ILT |
2824 | } |
2825 | break; | |
f8701a3f | 2826 | |
5ac34ac3 ILT |
2827 | default: |
2828 | /* The value is some complex expression. | |
2829 | FIXME: Should we set the segment to anything? */ | |
2830 | symbolP->sy_value = exp; | |
2831 | break; | |
f8701a3f | 2832 | } |
fecd2382 RP |
2833 | } |
2834 | \f | |
2835 | /* | |
2836 | * cons() | |
2837 | * | |
2838 | * CONStruct more frag of .bytes, or .words etc. | |
2839 | * Should need_pass_2 be 1 then emit no frag(s). | |
80aab579 | 2840 | * This understands EXPRESSIONS. |
fecd2382 RP |
2841 | * |
2842 | * Bug (?) | |
2843 | * | |
2844 | * This has a split personality. We use expression() to read the | |
2845 | * value. We can detect if the value won't fit in a byte or word. | |
2846 | * But we can't detect if expression() discarded significant digits | |
2847 | * in the case of a long. Not worth the crocks required to fix it. | |
2848 | */ | |
2849 | ||
40324362 KR |
2850 | /* Select a parser for cons expressions. */ |
2851 | ||
2852 | /* Some targets need to parse the expression in various fancy ways. | |
2853 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
2854 | (for example, the HPPA does this). Otherwise, you can define | |
2855 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
2856 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
2857 | are defined, which is the normal case, then only simple expressions | |
2858 | are permitted. */ | |
2859 | ||
1356d77d ILT |
2860 | static void |
2861 | parse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2862 | ||
40324362 KR |
2863 | #ifndef TC_PARSE_CONS_EXPRESSION |
2864 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
2865 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
2866 | static void | |
2867 | parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2868 | #endif | |
40324362 KR |
2869 | #ifdef REPEAT_CONS_EXPRESSIONS |
2870 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
2871 | static void | |
2872 | parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2873 | #endif | |
2874 | ||
2875 | /* If we haven't gotten one yet, just call expression. */ | |
2876 | #ifndef TC_PARSE_CONS_EXPRESSION | |
2877 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
2878 | #endif | |
2879 | #endif | |
2880 | ||
6efd877d KR |
2881 | /* worker to do .byte etc statements */ |
2882 | /* clobbers input_line_pointer, checks */ | |
2883 | /* end-of-line. */ | |
86038ada ILT |
2884 | static void |
2885 | cons_worker (nbytes, rva) | |
604633ae | 2886 | register int nbytes; /* 1=.byte, 2=.word, 4=.long */ |
86038ada | 2887 | int rva; |
fecd2382 | 2888 | { |
286cb27a | 2889 | int c; |
6efd877d | 2890 | expressionS exp; |
86038ada | 2891 | char *stop = NULL; |
3dce804d | 2892 | char stopc; |
f8701a3f | 2893 | |
a2a5a4fa KR |
2894 | #ifdef md_flush_pending_output |
2895 | md_flush_pending_output (); | |
2896 | #endif | |
2897 | ||
18c9057f ILT |
2898 | if (flag_mri) |
2899 | stop = mri_comment_field (&stopc); | |
2900 | ||
40324362 | 2901 | if (is_it_end_of_statement ()) |
6efd877d | 2902 | { |
cef72a92 ILT |
2903 | if (flag_mri) |
2904 | mri_comment_end (stop, stopc); | |
40324362 KR |
2905 | demand_empty_rest_of_line (); |
2906 | return; | |
6efd877d | 2907 | } |
40324362 | 2908 | |
286cb27a | 2909 | c = 0; |
40324362 | 2910 | do |
6efd877d | 2911 | { |
cef72a92 | 2912 | if (flag_m68k_mri) |
1356d77d ILT |
2913 | parse_mri_cons (&exp, (unsigned int) nbytes); |
2914 | else | |
2915 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); | |
6594d6b9 KR |
2916 | |
2917 | if (rva) | |
2918 | { | |
2919 | if (exp.X_op == O_symbol) | |
2920 | exp.X_op = O_symbol_rva; | |
2921 | else | |
2922 | as_fatal ("rva without symbol"); | |
2923 | } | |
2924 | emit_expr (&exp, (unsigned int) nbytes); | |
286cb27a | 2925 | ++c; |
40324362 | 2926 | } |
18c9057f | 2927 | while (*input_line_pointer++ == ','); |
40324362 | 2928 | |
286cb27a ILT |
2929 | /* In MRI mode, after an odd number of bytes, we must align to an |
2930 | even word boundary, unless the next instruction is a dc.b, ds.b | |
2931 | or dcb.b. */ | |
2932 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
2933 | mri_pending_align = 1; | |
2934 | ||
40324362 | 2935 | input_line_pointer--; /* Put terminator back into stream. */ |
86038ada ILT |
2936 | |
2937 | if (flag_mri) | |
18c9057f | 2938 | mri_comment_end (stop, stopc); |
86038ada | 2939 | |
40324362 | 2940 | demand_empty_rest_of_line (); |
30d3a445 | 2941 | } |
f8701a3f | 2942 | |
86038ada ILT |
2943 | |
2944 | void | |
2945 | cons (size) | |
2946 | int size; | |
2947 | { | |
2948 | cons_worker (size, 0); | |
2949 | } | |
2950 | ||
2951 | void | |
2952 | s_rva (size) | |
2953 | int size; | |
2954 | { | |
2955 | cons_worker (size, 1); | |
2956 | } | |
2957 | ||
2958 | ||
40324362 KR |
2959 | /* Put the contents of expression EXP into the object file using |
2960 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
f8701a3f | 2961 | |
40324362 KR |
2962 | void |
2963 | emit_expr (exp, nbytes) | |
2964 | expressionS *exp; | |
2965 | unsigned int nbytes; | |
2966 | { | |
5ac34ac3 | 2967 | operatorT op; |
40324362 | 2968 | register char *p; |
80aab579 | 2969 | valueT extra_digit = 0; |
f8701a3f | 2970 | |
40324362 KR |
2971 | /* Don't do anything if we are going to make another pass. */ |
2972 | if (need_pass_2) | |
2973 | return; | |
2974 | ||
5ac34ac3 | 2975 | op = exp->X_op; |
40324362 | 2976 | |
e28c40d7 ILT |
2977 | /* Allow `.word 0' in the absolute section. */ |
2978 | if (now_seg == absolute_section) | |
2979 | { | |
2980 | if (op != O_constant || exp->X_add_number != 0) | |
2981 | as_bad ("attempt to store value in absolute section"); | |
2982 | abs_section_offset += nbytes; | |
2983 | return; | |
2984 | } | |
2985 | ||
80aab579 ILT |
2986 | /* Handle a negative bignum. */ |
2987 | if (op == O_uminus | |
2988 | && exp->X_add_number == 0 | |
2989 | && exp->X_add_symbol->sy_value.X_op == O_big | |
2990 | && exp->X_add_symbol->sy_value.X_add_number > 0) | |
2991 | { | |
2992 | int i; | |
2993 | unsigned long carry; | |
2994 | ||
2995 | exp = &exp->X_add_symbol->sy_value; | |
2996 | ||
2997 | /* Negate the bignum: one's complement each digit and add 1. */ | |
2998 | carry = 1; | |
2999 | for (i = 0; i < exp->X_add_number; i++) | |
3000 | { | |
3001 | unsigned long next; | |
3002 | ||
3003 | next = (((~ (generic_bignum[i] & LITTLENUM_MASK)) | |
3004 | & LITTLENUM_MASK) | |
3005 | + carry); | |
3006 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3007 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3008 | } | |
3009 | ||
3010 | /* We can ignore any carry out, because it will be handled by | |
3011 | extra_digit if it is needed. */ | |
3012 | ||
3013 | extra_digit = (valueT) -1; | |
3014 | op = O_big; | |
3015 | } | |
3016 | ||
5ac34ac3 | 3017 | if (op == O_absent || op == O_illegal) |
6efd877d | 3018 | { |
5ac34ac3 ILT |
3019 | as_warn ("zero assumed for missing expression"); |
3020 | exp->X_add_number = 0; | |
3021 | op = O_constant; | |
6efd877d | 3022 | } |
80aab579 | 3023 | else if (op == O_big && exp->X_add_number <= 0) |
6efd877d | 3024 | { |
80aab579 | 3025 | as_bad ("floating point number invalid; zero assumed"); |
40324362 | 3026 | exp->X_add_number = 0; |
5ac34ac3 | 3027 | op = O_constant; |
40324362 | 3028 | } |
5ac34ac3 | 3029 | else if (op == O_register) |
6efd877d | 3030 | { |
5ac34ac3 ILT |
3031 | as_warn ("register value used as expression"); |
3032 | op = O_constant; | |
40324362 | 3033 | } |
6efd877d | 3034 | |
604633ae | 3035 | p = frag_more ((int) nbytes); |
6efd877d | 3036 | |
40324362 KR |
3037 | #ifndef WORKING_DOT_WORD |
3038 | /* If we have the difference of two symbols in a word, save it on | |
3039 | the broken_words list. See the code in write.c. */ | |
5ac34ac3 | 3040 | if (op == O_subtract && nbytes == 2) |
40324362 KR |
3041 | { |
3042 | struct broken_word *x; | |
3043 | ||
3044 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3045 | x->next_broken_word = broken_words; | |
3046 | broken_words = x; | |
3047 | x->frag = frag_now; | |
3048 | x->word_goes_here = p; | |
3049 | x->dispfrag = 0; | |
3050 | x->add = exp->X_add_symbol; | |
5ac34ac3 | 3051 | x->sub = exp->X_op_symbol; |
40324362 KR |
3052 | x->addnum = exp->X_add_number; |
3053 | x->added = 0; | |
3054 | new_broken_words++; | |
3055 | return; | |
3056 | } | |
f8701a3f | 3057 | #endif |
6efd877d | 3058 | |
80aab579 ILT |
3059 | /* If we have an integer, but the number of bytes is too large to |
3060 | pass to md_number_to_chars, handle it as a bignum. */ | |
3061 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3062 | { | |
3063 | valueT val; | |
3064 | int gencnt; | |
3065 | ||
3066 | if (! exp->X_unsigned && exp->X_add_number < 0) | |
3067 | extra_digit = (valueT) -1; | |
3068 | val = (valueT) exp->X_add_number; | |
3069 | gencnt = 0; | |
3070 | do | |
3071 | { | |
3072 | generic_bignum[gencnt] = val & LITTLENUM_MASK; | |
3073 | val >>= LITTLENUM_NUMBER_OF_BITS; | |
3074 | ++gencnt; | |
3075 | } | |
3076 | while (val != 0); | |
3077 | op = exp->X_op = O_big; | |
3078 | exp->X_add_number = gencnt; | |
3079 | } | |
3080 | ||
5ac34ac3 | 3081 | if (op == O_constant) |
40324362 | 3082 | { |
44ce2f32 DE |
3083 | register valueT get; |
3084 | register valueT use; | |
3085 | register valueT mask; | |
3086 | register valueT unmask; | |
40324362 KR |
3087 | |
3088 | /* JF << of >= number of bits in the object is undefined. In | |
3089 | particular SPARC (Sun 4) has problems */ | |
44ce2f32 | 3090 | if (nbytes >= sizeof (valueT)) |
40324362 KR |
3091 | mask = 0; |
3092 | else | |
d2550c72 | 3093 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); /* Don't store these bits. */ |
6efd877d | 3094 | |
40324362 | 3095 | unmask = ~mask; /* Do store these bits. */ |
6efd877d | 3096 | |
40324362 KR |
3097 | #ifdef NEVER |
3098 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
3099 | mask = ~(unmask >> 1); /* Includes sign bit now. */ | |
3100 | #endif | |
6efd877d | 3101 | |
40324362 KR |
3102 | get = exp->X_add_number; |
3103 | use = get & unmask; | |
3104 | if ((get & mask) != 0 && (get & mask) != mask) | |
3105 | { /* Leading bits contain both 0s & 1s. */ | |
58d4951d | 3106 | as_warn ("Value 0x%lx truncated to 0x%lx.", get, use); |
40324362 | 3107 | } |
604633ae | 3108 | /* put bytes in right order. */ |
44ce2f32 | 3109 | md_number_to_chars (p, use, (int) nbytes); |
40324362 | 3110 | } |
80aab579 ILT |
3111 | else if (op == O_big) |
3112 | { | |
3113 | int size; | |
3114 | LITTLENUM_TYPE *nums; | |
3115 | ||
3116 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
3117 | ||
3118 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
3119 | if (nbytes < size) | |
3120 | { | |
3121 | as_warn ("Bignum truncated to %d bytes", nbytes); | |
3122 | size = nbytes; | |
3123 | } | |
3124 | ||
3125 | if (target_big_endian) | |
3126 | { | |
3127 | while (nbytes > size) | |
3128 | { | |
3129 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3130 | nbytes -= CHARS_PER_LITTLENUM; | |
3131 | p += CHARS_PER_LITTLENUM; | |
3132 | } | |
3133 | ||
3134 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
3135 | while (size > 0) | |
3136 | { | |
3137 | --nums; | |
3138 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3139 | size -= CHARS_PER_LITTLENUM; | |
3140 | p += CHARS_PER_LITTLENUM; | |
3141 | } | |
3142 | } | |
3143 | else | |
3144 | { | |
3145 | nums = generic_bignum; | |
3146 | while (size > 0) | |
3147 | { | |
3148 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3149 | ++nums; | |
3150 | size -= CHARS_PER_LITTLENUM; | |
3151 | p += CHARS_PER_LITTLENUM; | |
3152 | nbytes -= CHARS_PER_LITTLENUM; | |
3153 | } | |
3154 | ||
3155 | while (nbytes > 0) | |
3156 | { | |
3157 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3158 | nbytes -= CHARS_PER_LITTLENUM; | |
3159 | p += CHARS_PER_LITTLENUM; | |
3160 | } | |
3161 | } | |
3162 | } | |
40324362 KR |
3163 | else |
3164 | { | |
1fbfe108 | 3165 | memset (p, 0, nbytes); |
6efd877d | 3166 | |
40324362 KR |
3167 | /* Now we need to generate a fixS to record the symbol value. |
3168 | This is easy for BFD. For other targets it can be more | |
3169 | complex. For very complex cases (currently, the HPPA and | |
3170 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
3171 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
3172 | the name of the reloc code that should be stored in the fixS. | |
3173 | If neither is defined, the code uses NO_RELOC if it is | |
3174 | defined, and otherwise uses 0. */ | |
6efd877d | 3175 | |
40324362 | 3176 | #ifdef BFD_ASSEMBLER |
4064305e SS |
3177 | #ifdef TC_CONS_FIX_NEW |
3178 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3179 | #else | |
604633ae | 3180 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 3181 | /* @@ Should look at CPU word size. */ |
ba71c54d | 3182 | nbytes == 2 ? BFD_RELOC_16 |
86038ada ILT |
3183 | : nbytes == 8 ? BFD_RELOC_64 |
3184 | : BFD_RELOC_32); | |
4064305e | 3185 | #endif |
40324362 KR |
3186 | #else |
3187 | #ifdef TC_CONS_FIX_NEW | |
3188 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3189 | #else | |
3190 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
3191 | it is defined, otherwise use NO_RELOC if it is defined, | |
3192 | otherwise use 0. */ | |
3193 | #ifndef TC_CONS_RELOC | |
3194 | #ifdef NO_RELOC | |
3195 | #define TC_CONS_RELOC NO_RELOC | |
3196 | #else | |
3197 | #define TC_CONS_RELOC 0 | |
3198 | #endif | |
3199 | #endif | |
80aab579 | 3200 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 3201 | TC_CONS_RELOC); |
40324362 KR |
3202 | #endif /* TC_CONS_FIX_NEW */ |
3203 | #endif /* BFD_ASSEMBLER */ | |
3204 | } | |
3205 | } | |
3206 | \f | |
3207 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
6efd877d | 3208 | |
40324362 KR |
3209 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as |
3210 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3211 | then pack them all together. We do a little better in that we allow | |
3212 | them in words, longs, etc. and we'll pack them in target byte order | |
3213 | for you. | |
6efd877d | 3214 | |
40324362 KR |
3215 | The rules are: pack least significat bit first, if a field doesn't |
3216 | entirely fit, put it in the next unit. Overflowing the bitfield is | |
3217 | explicitly *not* even a warning. The bitwidth should be considered | |
3218 | a "mask". | |
6efd877d | 3219 | |
40324362 KR |
3220 | To use this function the tc-XXX.h file should define |
3221 | BITFIELD_CONS_EXPRESSIONS. */ | |
f8701a3f | 3222 | |
40324362 KR |
3223 | static void |
3224 | parse_bitfield_cons (exp, nbytes) | |
3225 | expressionS *exp; | |
3226 | unsigned int nbytes; | |
3227 | { | |
3228 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3229 | char *hold = input_line_pointer; | |
f8701a3f | 3230 | |
5ac34ac3 | 3231 | (void) expression (exp); |
f8701a3f | 3232 | |
40324362 KR |
3233 | if (*input_line_pointer == ':') |
3234 | { /* bitfields */ | |
3235 | long value = 0; | |
f8701a3f | 3236 | |
40324362 KR |
3237 | for (;;) |
3238 | { | |
3239 | unsigned long width; | |
f8701a3f | 3240 | |
40324362 KR |
3241 | if (*input_line_pointer != ':') |
3242 | { | |
3243 | input_line_pointer = hold; | |
3244 | break; | |
3245 | } /* next piece is not a bitfield */ | |
3246 | ||
3247 | /* In the general case, we can't allow | |
3248 | full expressions with symbol | |
3249 | differences and such. The relocation | |
3250 | entries for symbols not defined in this | |
3251 | assembly would require arbitrary field | |
3252 | widths, positions, and masks which most | |
3253 | of our current object formats don't | |
3254 | support. | |
cd3b81bd | 3255 | |
40324362 KR |
3256 | In the specific case where a symbol |
3257 | *is* defined in this assembly, we | |
3258 | *could* build fixups and track it, but | |
3259 | this could lead to confusion for the | |
3260 | backends. I'm lazy. I'll take any | |
3261 | SEG_ABSOLUTE. I think that means that | |
3262 | you can use a previous .set or | |
3263 | .equ type symbol. xoxorich. */ | |
3264 | ||
5ac34ac3 | 3265 | if (exp->X_op == O_absent) |
6efd877d | 3266 | { |
5ac34ac3 | 3267 | as_warn ("using a bit field width of zero"); |
40324362 | 3268 | exp->X_add_number = 0; |
5ac34ac3 | 3269 | exp->X_op = O_constant; |
40324362 KR |
3270 | } /* implied zero width bitfield */ |
3271 | ||
5ac34ac3 | 3272 | if (exp->X_op != O_constant) |
6efd877d | 3273 | { |
40324362 | 3274 | *input_line_pointer = '\0'; |
5ac34ac3 | 3275 | as_bad ("field width \"%s\" too complex for a bitfield", hold); |
40324362 KR |
3276 | *input_line_pointer = ':'; |
3277 | demand_empty_rest_of_line (); | |
3278 | return; | |
3279 | } /* too complex */ | |
3280 | ||
3281 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
9471a360 | 3282 | { |
80aab579 | 3283 | as_warn ("field width %lu too big to fit in %d bytes: truncated to %d bits", |
40324362 KR |
3284 | width, nbytes, (BITS_PER_CHAR * nbytes)); |
3285 | width = BITS_PER_CHAR * nbytes; | |
3286 | } /* too big */ | |
3287 | ||
3288 | if (width > bits_available) | |
9471a360 | 3289 | { |
40324362 KR |
3290 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ |
3291 | input_line_pointer = hold; | |
3292 | exp->X_add_number = value; | |
3293 | break; | |
3294 | } /* won't fit */ | |
3295 | ||
3296 | hold = ++input_line_pointer; /* skip ':' */ | |
3297 | ||
5ac34ac3 ILT |
3298 | (void) expression (exp); |
3299 | if (exp->X_op != O_constant) | |
9471a360 | 3300 | { |
40324362 KR |
3301 | char cache = *input_line_pointer; |
3302 | ||
3303 | *input_line_pointer = '\0'; | |
5ac34ac3 | 3304 | as_bad ("field value \"%s\" too complex for a bitfield", hold); |
40324362 KR |
3305 | *input_line_pointer = cache; |
3306 | demand_empty_rest_of_line (); | |
3307 | return; | |
3308 | } /* too complex */ | |
3309 | ||
5ac34ac3 ILT |
3310 | value |= ((~(-1 << width) & exp->X_add_number) |
3311 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
40324362 KR |
3312 | |
3313 | if ((bits_available -= width) == 0 | |
3314 | || is_it_end_of_statement () | |
3315 | || *input_line_pointer != ',') | |
3316 | { | |
3317 | break; | |
3318 | } /* all the bitfields we're gonna get */ | |
3319 | ||
3320 | hold = ++input_line_pointer; | |
5ac34ac3 | 3321 | (void) expression (exp); |
40324362 KR |
3322 | } /* forever loop */ |
3323 | ||
3324 | exp->X_add_number = value; | |
5ac34ac3 | 3325 | exp->X_op = O_constant; |
80aab579 | 3326 | exp->X_unsigned = 1; |
40324362 KR |
3327 | } /* if looks like a bitfield */ |
3328 | } /* parse_bitfield_cons() */ | |
3329 | ||
3330 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
3331 | \f | |
1356d77d | 3332 | /* Handle an MRI style string expression. */ |
40324362 KR |
3333 | |
3334 | static void | |
3335 | parse_mri_cons (exp, nbytes) | |
3336 | expressionS *exp; | |
3337 | unsigned int nbytes; | |
3338 | { | |
1356d77d ILT |
3339 | if (*input_line_pointer != '\'' |
3340 | && (input_line_pointer[1] != '\'' | |
3341 | || (*input_line_pointer != 'A' | |
3342 | && *input_line_pointer != 'E'))) | |
3343 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3344 | else | |
40324362 | 3345 | { |
40324362 KR |
3346 | int scan = 0; |
3347 | unsigned int result = 0; | |
1356d77d ILT |
3348 | |
3349 | /* An MRI style string. Cut into as many bytes as will fit into | |
3350 | a nbyte chunk, left justify if necessary, and separate with | |
3351 | commas so we can try again later. */ | |
3352 | if (*input_line_pointer == 'A') | |
3353 | ++input_line_pointer; | |
3354 | else if (*input_line_pointer == 'E') | |
3355 | { | |
3356 | as_bad ("EBCDIC constants are not supported"); | |
3357 | ++input_line_pointer; | |
3358 | } | |
3359 | ||
40324362 KR |
3360 | input_line_pointer++; |
3361 | for (scan = 0; scan < nbytes; scan++) | |
3362 | { | |
3363 | if (*input_line_pointer == '\'') | |
3364 | { | |
3365 | if (input_line_pointer[1] == '\'') | |
6efd877d | 3366 | { |
40324362 | 3367 | input_line_pointer++; |
f8701a3f | 3368 | } |
40324362 KR |
3369 | else |
3370 | break; | |
9471a360 | 3371 | } |
40324362 KR |
3372 | result = (result << 8) | (*input_line_pointer++); |
3373 | } | |
f8701a3f | 3374 | |
40324362 KR |
3375 | /* Left justify */ |
3376 | while (scan < nbytes) | |
3377 | { | |
3378 | result <<= 8; | |
3379 | scan++; | |
3380 | } | |
3381 | /* Create correct expression */ | |
5ac34ac3 | 3382 | exp->X_op = O_constant; |
40324362 | 3383 | exp->X_add_number = result; |
40324362 KR |
3384 | /* Fake it so that we can read the next char too */ |
3385 | if (input_line_pointer[0] != '\'' || | |
3386 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
3387 | { | |
3388 | input_line_pointer -= 2; | |
3389 | input_line_pointer[0] = ','; | |
3390 | input_line_pointer[1] = '\''; | |
3391 | } | |
3392 | else | |
3393 | input_line_pointer++; | |
3394 | } | |
40324362 | 3395 | } |
40324362 KR |
3396 | \f |
3397 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3398 | ||
3399 | /* Parse a repeat expression for cons. This is used by the MIPS | |
3400 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
3401 | object file COUNT times. | |
3402 | ||
3403 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
3404 | ||
3405 | static void | |
3406 | parse_repeat_cons (exp, nbytes) | |
3407 | expressionS *exp; | |
3408 | unsigned int nbytes; | |
3409 | { | |
3410 | expressionS count; | |
40324362 KR |
3411 | register int i; |
3412 | ||
3413 | expression (exp); | |
3414 | ||
3415 | if (*input_line_pointer != ':') | |
3416 | { | |
3417 | /* No repeat count. */ | |
3418 | return; | |
3419 | } | |
3420 | ||
3421 | ++input_line_pointer; | |
5ac34ac3 ILT |
3422 | expression (&count); |
3423 | if (count.X_op != O_constant | |
40324362 KR |
3424 | || count.X_add_number <= 0) |
3425 | { | |
3426 | as_warn ("Unresolvable or nonpositive repeat count; using 1"); | |
3427 | return; | |
3428 | } | |
3429 | ||
3430 | /* The cons function is going to output this expression once. So we | |
3431 | output it count - 1 times. */ | |
3432 | for (i = count.X_add_number - 1; i > 0; i--) | |
3433 | emit_expr (exp, nbytes); | |
3434 | } | |
3435 | ||
3436 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
fecd2382 | 3437 | \f |
e28c40d7 ILT |
3438 | /* Parse a floating point number represented as a hex constant. This |
3439 | permits users to specify the exact bits they want in the floating | |
3440 | point number. */ | |
3441 | ||
3442 | static int | |
3443 | hex_float (float_type, bytes) | |
3444 | int float_type; | |
3445 | char *bytes; | |
3446 | { | |
3447 | int length; | |
3448 | int i; | |
3449 | ||
3450 | switch (float_type) | |
3451 | { | |
3452 | case 'f': | |
3453 | case 'F': | |
3454 | case 's': | |
3455 | case 'S': | |
3456 | length = 4; | |
3457 | break; | |
3458 | ||
3459 | case 'd': | |
3460 | case 'D': | |
3461 | case 'r': | |
3462 | case 'R': | |
3463 | length = 8; | |
3464 | break; | |
3465 | ||
3466 | case 'x': | |
3467 | case 'X': | |
3468 | length = 12; | |
3469 | break; | |
3470 | ||
3471 | case 'p': | |
3472 | case 'P': | |
3473 | length = 12; | |
3474 | break; | |
3475 | ||
3476 | default: | |
3477 | as_bad ("Unknown floating type type '%c'", float_type); | |
3478 | return -1; | |
3479 | } | |
3480 | ||
3481 | /* It would be nice if we could go through expression to parse the | |
3482 | hex constant, but if we get a bignum it's a pain to sort it into | |
3483 | the buffer correctly. */ | |
3484 | i = 0; | |
3485 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
3486 | { | |
3487 | int d; | |
3488 | ||
3489 | /* The MRI assembler accepts arbitrary underscores strewn about | |
3490 | through the hex constant, so we ignore them as well. */ | |
3491 | if (*input_line_pointer == '_') | |
3492 | { | |
3493 | ++input_line_pointer; | |
3494 | continue; | |
3495 | } | |
3496 | ||
3497 | if (i >= length) | |
3498 | { | |
3499 | as_warn ("Floating point constant too large"); | |
3500 | return -1; | |
3501 | } | |
3502 | d = hex_value (*input_line_pointer) << 4; | |
3503 | ++input_line_pointer; | |
3504 | while (*input_line_pointer == '_') | |
3505 | ++input_line_pointer; | |
3506 | if (hex_p (*input_line_pointer)) | |
3507 | { | |
3508 | d += hex_value (*input_line_pointer); | |
3509 | ++input_line_pointer; | |
3510 | } | |
a920b693 ILT |
3511 | if (target_big_endian) |
3512 | bytes[i] = d; | |
3513 | else | |
3514 | bytes[length - i - 1] = d; | |
3515 | ++i; | |
e28c40d7 ILT |
3516 | } |
3517 | ||
3518 | if (i < length) | |
a920b693 ILT |
3519 | { |
3520 | if (target_big_endian) | |
3521 | memset (bytes + i, 0, length - i); | |
3522 | else | |
3523 | memset (bytes, 0, length - i); | |
3524 | } | |
e28c40d7 ILT |
3525 | |
3526 | return length; | |
3527 | } | |
3528 | ||
fecd2382 RP |
3529 | /* |
3530 | * float_cons() | |
3531 | * | |
3532 | * CONStruct some more frag chars of .floats .ffloats etc. | |
3533 | * Makes 0 or more new frags. | |
3534 | * If need_pass_2 == 1, no frags are emitted. | |
3535 | * This understands only floating literals, not expressions. Sorry. | |
3536 | * | |
3537 | * A floating constant is defined by atof_generic(), except it is preceded | |
3538 | * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
3539 | * reading, I decided to be incompatible. This always tries to give you | |
3540 | * rounded bits to the precision of the pseudo-op. Former AS did premature | |
3541 | * truncatation, restored noisy bits instead of trailing 0s AND gave you | |
3542 | * a choice of 2 flavours of noise according to which of 2 floating-point | |
3543 | * scanners you directed AS to use. | |
3544 | * | |
3545 | * In: input_line_pointer->whitespace before, or '0' of flonum. | |
3546 | * | |
3547 | */ | |
3548 | ||
ba71c54d KR |
3549 | void |
3550 | float_cons (float_type) | |
6efd877d | 3551 | /* Clobbers input_line-pointer, checks end-of-line. */ |
f8701a3f | 3552 | register int float_type; /* 'f':.ffloat ... 'F':.float ... */ |
fecd2382 | 3553 | { |
6efd877d | 3554 | register char *p; |
6efd877d KR |
3555 | int length; /* Number of chars in an object. */ |
3556 | register char *err; /* Error from scanning floating literal. */ | |
3557 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
f8701a3f | 3558 | |
6efd877d | 3559 | if (is_it_end_of_statement ()) |
f8701a3f | 3560 | { |
1e9cf565 ILT |
3561 | demand_empty_rest_of_line (); |
3562 | return; | |
f8701a3f | 3563 | } |
1e9cf565 ILT |
3564 | |
3565 | do | |
f8701a3f SC |
3566 | { |
3567 | /* input_line_pointer->1st char of a flonum (we hope!). */ | |
6efd877d | 3568 | SKIP_WHITESPACE (); |
1e9cf565 | 3569 | |
f8701a3f SC |
3570 | /* Skip any 0{letter} that may be present. Don't even check if the |
3571 | * letter is legal. Someone may invent a "z" format and this routine | |
3572 | * has no use for such information. Lusers beware: you get | |
3573 | * diagnostics if your input is ill-conditioned. | |
3574 | */ | |
6efd877d KR |
3575 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) |
3576 | input_line_pointer += 2; | |
f8701a3f | 3577 | |
1356d77d ILT |
3578 | /* Accept :xxxx, where the x's are hex digits, for a floating |
3579 | point with the exact digits specified. */ | |
3580 | if (input_line_pointer[0] == ':') | |
f8701a3f | 3581 | { |
e28c40d7 ILT |
3582 | ++input_line_pointer; |
3583 | length = hex_float (float_type, temp); | |
3584 | if (length < 0) | |
1356d77d | 3585 | { |
1356d77d ILT |
3586 | ignore_rest_of_line (); |
3587 | return; | |
3588 | } | |
1356d77d ILT |
3589 | } |
3590 | else | |
3591 | { | |
3592 | err = md_atof (float_type, temp, &length); | |
3593 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3594 | know (length > 0); | |
3595 | if (err) | |
3596 | { | |
3597 | as_bad ("Bad floating literal: %s", err); | |
3598 | ignore_rest_of_line (); | |
3599 | return; | |
3600 | } | |
f8701a3f | 3601 | } |
1e9cf565 ILT |
3602 | |
3603 | if (!need_pass_2) | |
f8701a3f | 3604 | { |
1e9cf565 ILT |
3605 | int count; |
3606 | ||
3607 | count = 1; | |
3608 | ||
3609 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3610 | if (*input_line_pointer == ':') | |
3611 | { | |
1e9cf565 ILT |
3612 | expressionS count_exp; |
3613 | ||
3614 | ++input_line_pointer; | |
5ac34ac3 ILT |
3615 | expression (&count_exp); |
3616 | if (count_exp.X_op != O_constant | |
1e9cf565 ILT |
3617 | || count_exp.X_add_number <= 0) |
3618 | { | |
5ac34ac3 | 3619 | as_warn ("unresolvable or nonpositive repeat count; using 1"); |
1e9cf565 ILT |
3620 | } |
3621 | else | |
3622 | count = count_exp.X_add_number; | |
3623 | } | |
3624 | #endif | |
3625 | ||
3626 | while (--count >= 0) | |
a39116f1 | 3627 | { |
f8701a3f | 3628 | p = frag_more (length); |
604633ae | 3629 | memcpy (p, temp, (unsigned int) length); |
a39116f1 | 3630 | } |
542e1629 | 3631 | } |
1e9cf565 | 3632 | SKIP_WHITESPACE (); |
f8701a3f | 3633 | } |
1e9cf565 ILT |
3634 | while (*input_line_pointer++ == ','); |
3635 | ||
3636 | --input_line_pointer; /* Put terminator back into stream. */ | |
6efd877d | 3637 | demand_empty_rest_of_line (); |
f8701a3f | 3638 | } /* float_cons() */ |
fecd2382 RP |
3639 | \f |
3640 | /* | |
3641 | * stringer() | |
3642 | * | |
3643 | * We read 0 or more ',' seperated, double-quoted strings. | |
3644 | * | |
3645 | * Caller should have checked need_pass_2 is FALSE because we don't check it. | |
3646 | */ | |
a39116f1 RP |
3647 | |
3648 | ||
6efd877d KR |
3649 | void |
3650 | stringer (append_zero) /* Worker to do .ascii etc statements. */ | |
3651 | /* Checks end-of-line. */ | |
f8701a3f | 3652 | register int append_zero; /* 0: don't append '\0', else 1 */ |
fecd2382 | 3653 | { |
f8701a3f | 3654 | register unsigned int c; |
6efd877d | 3655 | |
a2a5a4fa KR |
3656 | #ifdef md_flush_pending_output |
3657 | md_flush_pending_output (); | |
3658 | #endif | |
3659 | ||
f8701a3f SC |
3660 | /* |
3661 | * The following awkward logic is to parse ZERO or more strings, | |
3662 | * comma seperated. Recall a string expression includes spaces | |
3663 | * before the opening '\"' and spaces after the closing '\"'. | |
3664 | * We fake a leading ',' if there is (supposed to be) | |
3665 | * a 1st, expression. We keep demanding expressions for each | |
3666 | * ','. | |
3667 | */ | |
6efd877d KR |
3668 | if (is_it_end_of_statement ()) |
3669 | { | |
3670 | c = 0; /* Skip loop. */ | |
3671 | ++input_line_pointer; /* Compensate for end of loop. */ | |
3672 | } | |
f8701a3f | 3673 | else |
6efd877d KR |
3674 | { |
3675 | c = ','; /* Do loop. */ | |
3676 | } | |
3677 | while (c == ',' || c == '<' || c == '"') | |
3678 | { | |
3679 | SKIP_WHITESPACE (); | |
3680 | switch (*input_line_pointer) | |
3681 | { | |
3682 | case '\"': | |
3683 | ++input_line_pointer; /*->1st char of string. */ | |
3684 | while (is_a_char (c = next_char_of_string ())) | |
3685 | { | |
3686 | FRAG_APPEND_1_CHAR (c); | |
3687 | } | |
3688 | if (append_zero) | |
3689 | { | |
3690 | FRAG_APPEND_1_CHAR (0); | |
3691 | } | |
3692 | know (input_line_pointer[-1] == '\"'); | |
3693 | break; | |
3694 | case '<': | |
3695 | input_line_pointer++; | |
3696 | c = get_single_number (); | |
3697 | FRAG_APPEND_1_CHAR (c); | |
3698 | if (*input_line_pointer != '>') | |
3699 | { | |
3700 | as_bad ("Expected <nn>"); | |
3701 | } | |
3702 | input_line_pointer++; | |
3703 | break; | |
3704 | case ',': | |
3705 | input_line_pointer++; | |
3706 | break; | |
3707 | } | |
3708 | SKIP_WHITESPACE (); | |
3709 | c = *input_line_pointer; | |
f8701a3f | 3710 | } |
f8701a3f | 3711 | |
6efd877d KR |
3712 | demand_empty_rest_of_line (); |
3713 | } /* stringer() */ | |
fecd2382 | 3714 | \f |
6efd877d | 3715 | /* FIXME-SOMEDAY: I had trouble here on characters with the |
f8701a3f SC |
3716 | high bits set. We'll probably also have trouble with |
3717 | multibyte chars, wide chars, etc. Also be careful about | |
3718 | returning values bigger than 1 byte. xoxorich. */ | |
fecd2382 | 3719 | |
6efd877d KR |
3720 | unsigned int |
3721 | next_char_of_string () | |
3722 | { | |
3723 | register unsigned int c; | |
3724 | ||
3725 | c = *input_line_pointer++ & CHAR_MASK; | |
3726 | switch (c) | |
3727 | { | |
3728 | case '\"': | |
3729 | c = NOT_A_CHAR; | |
3730 | break; | |
3731 | ||
ddb393cf | 3732 | #ifndef NO_STRING_ESCAPES |
6efd877d KR |
3733 | case '\\': |
3734 | switch (c = *input_line_pointer++) | |
3735 | { | |
3736 | case 'b': | |
3737 | c = '\b'; | |
3738 | break; | |
3739 | ||
3740 | case 'f': | |
3741 | c = '\f'; | |
3742 | break; | |
3743 | ||
3744 | case 'n': | |
3745 | c = '\n'; | |
3746 | break; | |
3747 | ||
3748 | case 'r': | |
3749 | c = '\r'; | |
3750 | break; | |
3751 | ||
3752 | case 't': | |
3753 | c = '\t'; | |
3754 | break; | |
3755 | ||
6efd877d KR |
3756 | case 'v': |
3757 | c = '\013'; | |
3758 | break; | |
6efd877d KR |
3759 | |
3760 | case '\\': | |
3761 | case '"': | |
3762 | break; /* As itself. */ | |
3763 | ||
3764 | case '0': | |
3765 | case '1': | |
3766 | case '2': | |
3767 | case '3': | |
3768 | case '4': | |
3769 | case '5': | |
3770 | case '6': | |
3771 | case '7': | |
3772 | case '8': | |
3773 | case '9': | |
3774 | { | |
3775 | long number; | |
d4c8cbd8 | 3776 | int i; |
6efd877d | 3777 | |
d4c8cbd8 | 3778 | for (i = 0, number = 0; isdigit (c) && i < 3; c = *input_line_pointer++, i++) |
6efd877d KR |
3779 | { |
3780 | number = number * 8 + c - '0'; | |
3781 | } | |
3782 | c = number & 0xff; | |
3783 | } | |
3784 | --input_line_pointer; | |
3785 | break; | |
3786 | ||
d4c8cbd8 JL |
3787 | case 'x': |
3788 | case 'X': | |
3789 | { | |
3790 | long number; | |
3791 | ||
3792 | number = 0; | |
3793 | c = *input_line_pointer++; | |
3794 | while (isxdigit (c)) | |
3795 | { | |
3796 | if (isdigit (c)) | |
3797 | number = number * 16 + c - '0'; | |
3798 | else if (isupper (c)) | |
3799 | number = number * 16 + c - 'A' + 10; | |
3800 | else | |
3801 | number = number * 16 + c - 'a' + 10; | |
3802 | c = *input_line_pointer++; | |
3803 | } | |
3804 | c = number & 0xff; | |
3805 | --input_line_pointer; | |
3806 | } | |
3807 | break; | |
3808 | ||
6efd877d KR |
3809 | case '\n': |
3810 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ | |
3811 | as_warn ("Unterminated string: Newline inserted."); | |
3812 | c = '\n'; | |
3813 | break; | |
3814 | ||
3815 | default: | |
3816 | ||
fecd2382 | 3817 | #ifdef ONLY_STANDARD_ESCAPES |
6efd877d KR |
3818 | as_bad ("Bad escaped character in string, '?' assumed"); |
3819 | c = '?'; | |
fecd2382 | 3820 | #endif /* ONLY_STANDARD_ESCAPES */ |
6efd877d KR |
3821 | |
3822 | break; | |
3823 | } /* switch on escaped char */ | |
3824 | break; | |
ddb393cf | 3825 | #endif /* ! defined (NO_STRING_ESCAPES) */ |
6efd877d KR |
3826 | |
3827 | default: | |
3828 | break; | |
3829 | } /* switch on char */ | |
3830 | return (c); | |
3831 | } /* next_char_of_string() */ | |
fecd2382 RP |
3832 | \f |
3833 | static segT | |
f8701a3f | 3834 | get_segmented_expression (expP) |
6efd877d | 3835 | register expressionS *expP; |
fecd2382 | 3836 | { |
6efd877d | 3837 | register segT retval; |
f8701a3f | 3838 | |
9471a360 | 3839 | retval = expression (expP); |
5ac34ac3 ILT |
3840 | if (expP->X_op == O_illegal |
3841 | || expP->X_op == O_absent | |
3842 | || expP->X_op == O_big) | |
f8701a3f | 3843 | { |
5ac34ac3 ILT |
3844 | as_bad ("expected address expression; zero assumed"); |
3845 | expP->X_op = O_constant; | |
6efd877d | 3846 | expP->X_add_number = 0; |
5ac34ac3 | 3847 | retval = absolute_section; |
f8701a3f | 3848 | } |
5ac34ac3 | 3849 | return retval; |
fecd2382 RP |
3850 | } |
3851 | ||
6efd877d KR |
3852 | static segT |
3853 | get_known_segmented_expression (expP) | |
3854 | register expressionS *expP; | |
fecd2382 | 3855 | { |
6efd877d | 3856 | register segT retval; |
f8701a3f | 3857 | |
9471a360 | 3858 | if ((retval = get_segmented_expression (expP)) == undefined_section) |
f8701a3f | 3859 | { |
5ac34ac3 ILT |
3860 | /* There is no easy way to extract the undefined symbol from the |
3861 | expression. */ | |
3862 | if (expP->X_add_symbol != NULL | |
3863 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
3864 | as_warn ("symbol \"%s\" undefined; zero assumed", | |
3865 | S_GET_NAME (expP->X_add_symbol)); | |
f8701a3f | 3866 | else |
5ac34ac3 ILT |
3867 | as_warn ("some symbol undefined; zero assumed"); |
3868 | retval = absolute_section; | |
3869 | expP->X_op = O_constant; | |
6efd877d | 3870 | expP->X_add_number = 0; |
f8701a3f | 3871 | } |
5ac34ac3 | 3872 | know (retval == absolute_section || SEG_NORMAL (retval)); |
f8701a3f | 3873 | return (retval); |
fecd2382 RP |
3874 | } /* get_known_segmented_expression() */ |
3875 | ||
58d4951d | 3876 | offsetT |
f8701a3f | 3877 | get_absolute_expression () |
fecd2382 | 3878 | { |
6efd877d | 3879 | expressionS exp; |
f8701a3f | 3880 | |
5ac34ac3 ILT |
3881 | expression (&exp); |
3882 | if (exp.X_op != O_constant) | |
f8701a3f | 3883 | { |
5ac34ac3 | 3884 | if (exp.X_op != O_absent) |
cd3b81bd | 3885 | as_bad ("bad or irreducible absolute expression; zero assumed"); |
6efd877d | 3886 | exp.X_add_number = 0; |
f8701a3f | 3887 | } |
5ac34ac3 | 3888 | return exp.X_add_number; |
fecd2382 RP |
3889 | } |
3890 | ||
6efd877d KR |
3891 | char /* return terminator */ |
3892 | get_absolute_expression_and_terminator (val_pointer) | |
3893 | long *val_pointer; /* return value of expression */ | |
fecd2382 | 3894 | { |
58d4951d ILT |
3895 | /* FIXME: val_pointer should probably be offsetT *. */ |
3896 | *val_pointer = (long) get_absolute_expression (); | |
6efd877d | 3897 | return (*input_line_pointer++); |
fecd2382 RP |
3898 | } |
3899 | \f | |
3900 | /* | |
3901 | * demand_copy_C_string() | |
3902 | * | |
3903 | * Like demand_copy_string, but return NULL if the string contains any '\0's. | |
3904 | * Give a warning if that happens. | |
3905 | */ | |
3906 | char * | |
f8701a3f | 3907 | demand_copy_C_string (len_pointer) |
6efd877d | 3908 | int *len_pointer; |
fecd2382 | 3909 | { |
6efd877d | 3910 | register char *s; |
f8701a3f | 3911 | |
6efd877d | 3912 | if ((s = demand_copy_string (len_pointer)) != 0) |
f8701a3f SC |
3913 | { |
3914 | register int len; | |
3915 | ||
6594d6b9 | 3916 | for (len = *len_pointer; len > 0; len--) |
f8701a3f | 3917 | { |
6efd877d | 3918 | if (*s == 0) |
fecd2382 | 3919 | { |
f8701a3f SC |
3920 | s = 0; |
3921 | len = 1; | |
6efd877d KR |
3922 | *len_pointer = 0; |
3923 | as_bad ("This string may not contain \'\\0\'"); | |
fecd2382 | 3924 | } |
f8701a3f SC |
3925 | } |
3926 | } | |
6594d6b9 | 3927 | return s; |
fecd2382 RP |
3928 | } |
3929 | \f | |
3930 | /* | |
3931 | * demand_copy_string() | |
3932 | * | |
3933 | * Demand string, but return a safe (=private) copy of the string. | |
3934 | * Return NULL if we can't read a string here. | |
3935 | */ | |
6ef37255 | 3936 | char * |
6efd877d KR |
3937 | demand_copy_string (lenP) |
3938 | int *lenP; | |
fecd2382 | 3939 | { |
6efd877d KR |
3940 | register unsigned int c; |
3941 | register int len; | |
3942 | char *retval; | |
3943 | ||
3944 | len = 0; | |
3945 | SKIP_WHITESPACE (); | |
3946 | if (*input_line_pointer == '\"') | |
3947 | { | |
3948 | input_line_pointer++; /* Skip opening quote. */ | |
3949 | ||
3950 | while (is_a_char (c = next_char_of_string ())) | |
3951 | { | |
3952 | obstack_1grow (¬es, c); | |
3953 | len++; | |
fecd2382 | 3954 | } |
42ac8fa8 ILT |
3955 | /* JF this next line is so demand_copy_C_string will return a |
3956 | null terminated string. */ | |
6efd877d KR |
3957 | obstack_1grow (¬es, '\0'); |
3958 | retval = obstack_finish (¬es); | |
3959 | } | |
3960 | else | |
3961 | { | |
3962 | as_warn ("Missing string"); | |
3963 | retval = NULL; | |
3964 | ignore_rest_of_line (); | |
3965 | } | |
3966 | *lenP = len; | |
3967 | return (retval); | |
3968 | } /* demand_copy_string() */ | |
fecd2382 RP |
3969 | \f |
3970 | /* | |
3971 | * is_it_end_of_statement() | |
3972 | * | |
3973 | * In: Input_line_pointer->next character. | |
3974 | * | |
3975 | * Do: Skip input_line_pointer over all whitespace. | |
3976 | * | |
3977 | * Out: 1 if input_line_pointer->end-of-line. | |
f8701a3f | 3978 | */ |
6efd877d KR |
3979 | int |
3980 | is_it_end_of_statement () | |
3981 | { | |
3982 | SKIP_WHITESPACE (); | |
58d4951d | 3983 | return (is_end_of_line[(unsigned char) *input_line_pointer]); |
6efd877d | 3984 | } /* is_it_end_of_statement() */ |
fecd2382 | 3985 | |
6efd877d KR |
3986 | void |
3987 | equals (sym_name) | |
3988 | char *sym_name; | |
fecd2382 | 3989 | { |
6efd877d | 3990 | register symbolS *symbolP; /* symbol we are working with */ |
86038ada | 3991 | char *stop; |
18c9057f | 3992 | char stopc; |
f8701a3f SC |
3993 | |
3994 | input_line_pointer++; | |
6efd877d | 3995 | if (*input_line_pointer == '=') |
f8701a3f SC |
3996 | input_line_pointer++; |
3997 | ||
6efd877d | 3998 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') |
f8701a3f SC |
3999 | input_line_pointer++; |
4000 | ||
86038ada | 4001 | if (flag_mri) |
18c9057f | 4002 | stop = mri_comment_field (&stopc); |
86038ada | 4003 | |
6efd877d KR |
4004 | if (sym_name[0] == '.' && sym_name[1] == '\0') |
4005 | { | |
4006 | /* Turn '. = mumble' into a .org mumble */ | |
4007 | register segT segment; | |
4008 | expressionS exp; | |
f8701a3f | 4009 | |
6efd877d KR |
4010 | segment = get_known_segmented_expression (&exp); |
4011 | if (!need_pass_2) | |
e28c40d7 | 4012 | do_org (segment, &exp, 0); |
6efd877d KR |
4013 | } |
4014 | else | |
4015 | { | |
4016 | symbolP = symbol_find_or_make (sym_name); | |
4017 | pseudo_set (symbolP); | |
4018 | } | |
86038ada ILT |
4019 | |
4020 | if (flag_mri) | |
18c9057f | 4021 | mri_comment_end (stop, stopc); |
6efd877d | 4022 | } /* equals() */ |
fecd2382 RP |
4023 | |
4024 | /* .include -- include a file at this point. */ | |
4025 | ||
4026 | /* ARGSUSED */ | |
6efd877d KR |
4027 | void |
4028 | s_include (arg) | |
4029 | int arg; | |
fecd2382 | 4030 | { |
f8701a3f SC |
4031 | char *newbuf; |
4032 | char *filename; | |
4033 | int i; | |
4034 | FILE *try; | |
4035 | char *path; | |
4036 | ||
cef72a92 | 4037 | if (! flag_m68k_mri) |
ca232972 ILT |
4038 | filename = demand_copy_string (&i); |
4039 | else | |
4040 | { | |
4041 | SKIP_WHITESPACE (); | |
4042 | i = 0; | |
4043 | while (! is_end_of_line[(unsigned char) *input_line_pointer] | |
4044 | && *input_line_pointer != ' ' | |
4045 | && *input_line_pointer != '\t') | |
4046 | { | |
4047 | obstack_1grow (¬es, *input_line_pointer); | |
4048 | ++input_line_pointer; | |
4049 | ++i; | |
4050 | } | |
4051 | obstack_1grow (¬es, '\0'); | |
4052 | filename = obstack_finish (¬es); | |
42ac8fa8 ILT |
4053 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) |
4054 | ++input_line_pointer; | |
ca232972 | 4055 | } |
6efd877d | 4056 | demand_empty_rest_of_line (); |
604633ae | 4057 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); |
6efd877d KR |
4058 | for (i = 0; i < include_dir_count; i++) |
4059 | { | |
4060 | strcpy (path, include_dirs[i]); | |
4061 | strcat (path, "/"); | |
4062 | strcat (path, filename); | |
f2889110 | 4063 | if (0 != (try = fopen (path, "r"))) |
6efd877d KR |
4064 | { |
4065 | fclose (try); | |
4066 | goto gotit; | |
4067 | } | |
4068 | } | |
4069 | free (path); | |
f8701a3f SC |
4070 | path = filename; |
4071 | gotit: | |
4072 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ | |
4073 | newbuf = input_scrub_include_file (path, input_line_pointer); | |
4074 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6efd877d | 4075 | } /* s_include() */ |
fecd2382 | 4076 | |
6efd877d KR |
4077 | void |
4078 | add_include_dir (path) | |
4079 | char *path; | |
fecd2382 | 4080 | { |
f8701a3f SC |
4081 | int i; |
4082 | ||
4083 | if (include_dir_count == 0) | |
4084 | { | |
6efd877d | 4085 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); |
f8701a3f SC |
4086 | include_dirs[0] = "."; /* Current dir */ |
4087 | include_dir_count = 2; | |
4088 | } | |
4089 | else | |
4090 | { | |
4091 | include_dir_count++; | |
6efd877d KR |
4092 | include_dirs = (char **) realloc (include_dirs, |
4093 | include_dir_count * sizeof (*include_dirs)); | |
f8701a3f SC |
4094 | } |
4095 | ||
6efd877d | 4096 | include_dirs[include_dir_count - 1] = path; /* New one */ |
f8701a3f | 4097 | |
6efd877d KR |
4098 | i = strlen (path); |
4099 | if (i > include_dir_maxlen) | |
4100 | include_dir_maxlen = i; | |
4101 | } /* add_include_dir() */ | |
fecd2382 | 4102 | |
6efd877d KR |
4103 | void |
4104 | s_ignore (arg) | |
4105 | int arg; | |
fecd2382 | 4106 | { |
58d4951d | 4107 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
4108 | { |
4109 | ++input_line_pointer; | |
4110 | } | |
4111 | ++input_line_pointer; | |
4064305e SS |
4112 | } |
4113 | ||
604633ae | 4114 | |
6594d6b9 KR |
4115 | void |
4116 | read_print_statistics (file) | |
4117 | FILE *file; | |
4118 | { | |
4119 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
4120 | } | |
4121 | ||
fecd2382 | 4122 | /* end of read.c */ |