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}, |
adeab39b | 366 | {"skip", s_space, 0}, |
e14994d9 | 367 | {"spc", s_ignore, 0}, |
4064305e SS |
368 | {"stabd", s_stab, 'd'}, |
369 | {"stabn", s_stab, 'n'}, | |
370 | {"stabs", s_stab, 's'}, | |
ba71c54d | 371 | {"string", stringer, 1}, |
e28c40d7 | 372 | {"struct", s_struct, 0}, |
f8701a3f | 373 | /* tag */ |
6efd877d | 374 | {"text", s_text, 0}, |
6ef37255 KR |
375 | |
376 | /* This is for gcc to use. It's only just been added (2/94), so gcc | |
377 | won't be able to use it for a while -- probably a year or more. | |
378 | But once this has been released, check with gcc maintainers | |
379 | before deleting it or even changing the spelling. */ | |
380 | {"this_GCC_requires_the_GNU_assembler", s_ignore, 0}, | |
381 | /* If we're folding case -- done for some targets, not necessarily | |
382 | all -- the above string in an input file will be converted to | |
383 | this one. Match it either way... */ | |
384 | {"this_gcc_requires_the_gnu_assembler", s_ignore, 0}, | |
385 | ||
6efd877d | 386 | {"title", listing_title, 0}, /* Listing title */ |
e14994d9 | 387 | {"ttl", listing_title, 0}, |
f8701a3f SC |
388 | /* type */ |
389 | /* use */ | |
390 | /* val */ | |
e14994d9 | 391 | {"xcom", s_comm, 0}, |
1356d77d | 392 | {"xdef", s_globl, 0}, |
e14994d9 | 393 | {"xref", s_ignore, 0}, |
4064305e | 394 | {"xstabs", s_xstab, 's'}, |
6efd877d | 395 | {"word", cons, 2}, |
c02fd8dc | 396 | {"zero", s_space, 0}, |
6efd877d | 397 | {NULL} /* end sentinel */ |
fecd2382 RP |
398 | }; |
399 | ||
2209b19c KR |
400 | static int pop_override_ok = 0; |
401 | static const char *pop_table_name; | |
402 | ||
403 | void | |
404 | pop_insert (table) | |
405 | const pseudo_typeS *table; | |
6efd877d | 406 | { |
2209b19c | 407 | const char *errtxt; |
6efd877d | 408 | const pseudo_typeS *pop; |
2209b19c KR |
409 | for (pop = table; pop->poc_name; pop++) |
410 | { | |
411 | errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop); | |
412 | if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists"))) | |
6594d6b9 KR |
413 | as_fatal ("error constructing %s pseudo-op table: %s", pop_table_name, |
414 | errtxt); | |
2209b19c KR |
415 | } |
416 | } | |
6efd877d | 417 | |
2209b19c KR |
418 | #ifndef md_pop_insert |
419 | #define md_pop_insert() pop_insert(md_pseudo_table) | |
420 | #endif | |
421 | ||
422 | #ifndef obj_pop_insert | |
423 | #define obj_pop_insert() pop_insert(obj_pseudo_table) | |
424 | #endif | |
425 | ||
426 | static void | |
427 | pobegin () | |
428 | { | |
6efd877d KR |
429 | po_hash = hash_new (); |
430 | ||
431 | /* Do the target-specific pseudo ops. */ | |
2209b19c KR |
432 | pop_table_name = "md"; |
433 | md_pop_insert (); | |
6efd877d KR |
434 | |
435 | /* Now object specific. Skip any that were in the target table. */ | |
2209b19c KR |
436 | pop_table_name = "obj"; |
437 | pop_override_ok = 1; | |
438 | obj_pop_insert (); | |
6efd877d KR |
439 | |
440 | /* Now portable ones. Skip any that we've seen already. */ | |
2209b19c KR |
441 | pop_table_name = "standard"; |
442 | pop_insert (potable); | |
443 | } | |
fecd2382 | 444 | \f |
58d4951d ILT |
445 | #define HANDLE_CONDITIONAL_ASSEMBLY() \ |
446 | if (ignore_input ()) \ | |
447 | { \ | |
448 | while (! is_end_of_line[(unsigned char) *input_line_pointer++]) \ | |
449 | if (input_line_pointer == buffer_limit) \ | |
450 | break; \ | |
451 | continue; \ | |
f8701a3f | 452 | } |
a39116f1 | 453 | |
fecd2382 | 454 | |
86038ada ILT |
455 | /* This function is used when scrubbing the characters between #APP |
456 | and #NO_APP. */ | |
457 | ||
458 | static char *scrub_string; | |
459 | static char *scrub_string_end; | |
460 | ||
461 | static int | |
462 | scrub_from_string (from) | |
463 | char **from; | |
464 | { | |
465 | int size; | |
466 | ||
467 | *from = scrub_string; | |
468 | size = scrub_string_end - scrub_string; | |
469 | scrub_string = scrub_string_end; | |
470 | return size; | |
471 | } | |
472 | ||
fecd2382 RP |
473 | /* read_a_source_file() |
474 | * | |
475 | * We read the file, putting things into a web that | |
476 | * represents what we have been reading. | |
477 | */ | |
6efd877d KR |
478 | void |
479 | read_a_source_file (name) | |
480 | char *name; | |
fecd2382 | 481 | { |
f8701a3f | 482 | register char c; |
6efd877d | 483 | register char *s; /* string of symbol, '\0' appended */ |
f8701a3f | 484 | register int temp; |
6efd877d | 485 | pseudo_typeS *pop; |
f8701a3f | 486 | |
6efd877d | 487 | buffer = input_scrub_new_file (name); |
f8701a3f | 488 | |
6efd877d KR |
489 | listing_file (name); |
490 | listing_newline (""); | |
f8701a3f | 491 | |
6efd877d KR |
492 | while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0) |
493 | { /* We have another line to parse. */ | |
494 | know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */ | |
9471a360 KR |
495 | contin: /* JF this goto is my fault I admit it. |
496 | Someone brave please re-write the whole | |
497 | input section here? Pleeze??? */ | |
6efd877d | 498 | while (input_line_pointer < buffer_limit) |
9471a360 KR |
499 | { |
500 | /* We have more of this buffer to parse. */ | |
f8701a3f SC |
501 | |
502 | /* | |
503 | * We now have input_line_pointer->1st char of next line. | |
504 | * If input_line_pointer [-1] == '\n' then we just | |
505 | * scanned another line: so bump line counters. | |
506 | */ | |
d2550c72 | 507 | if (is_end_of_line[(unsigned char) input_line_pointer[-1]]) |
6efd877d | 508 | { |
a2a5a4fa KR |
509 | #ifdef md_start_line_hook |
510 | md_start_line_hook (); | |
511 | #endif | |
512 | ||
385ce433 JL |
513 | if (input_line_pointer[-1] == '\n') |
514 | bump_line_counters (); | |
f8701a3f | 515 | |
7e047ac2 ILT |
516 | line_label = NULL; |
517 | ||
cef72a92 | 518 | if (flag_m68k_mri |
1356d77d ILT |
519 | #ifdef LABELS_WITHOUT_COLONS |
520 | || 1 | |
521 | #endif | |
522 | ) | |
6efd877d | 523 | { |
1356d77d ILT |
524 | /* Text at the start of a line must be a label, we |
525 | run down and stick a colon in. */ | |
526 | if (is_name_beginner (*input_line_pointer)) | |
527 | { | |
528 | char *line_start = input_line_pointer; | |
7e047ac2 ILT |
529 | char c; |
530 | ||
531 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
1356d77d | 532 | |
7e047ac2 ILT |
533 | c = get_symbol_end (); |
534 | ||
535 | /* In MRI mode, the EQU pseudoop must be | |
536 | handled specially. */ | |
cef72a92 | 537 | if (flag_m68k_mri) |
1356d77d | 538 | { |
7e047ac2 ILT |
539 | char *rest = input_line_pointer + 1; |
540 | ||
541 | if (*rest == ':') | |
542 | ++rest; | |
543 | if (*rest == ' ' || *rest == '\t') | |
544 | ++rest; | |
545 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
546 | || strncasecmp (rest, "SET", 3) == 0) | |
547 | && (rest[3] == ' ' || rest[3] == '\t')) | |
1356d77d | 548 | { |
7e047ac2 ILT |
549 | input_line_pointer = rest + 3; |
550 | equals (line_start); | |
551 | continue; | |
1356d77d ILT |
552 | } |
553 | } | |
6efd877d | 554 | |
7e047ac2 ILT |
555 | line_label = colon (line_start); |
556 | ||
1356d77d ILT |
557 | *input_line_pointer = c; |
558 | if (c == ':') | |
559 | input_line_pointer++; | |
560 | } | |
6efd877d | 561 | } |
9471a360 | 562 | } |
f8701a3f | 563 | |
f8701a3f SC |
564 | /* |
565 | * We are at the begining of a line, or similar place. | |
566 | * We expect a well-formed assembler statement. | |
567 | * A "symbol-name:" is a statement. | |
568 | * | |
569 | * Depending on what compiler is used, the order of these tests | |
570 | * may vary to catch most common case 1st. | |
571 | * Each test is independent of all other tests at the (top) level. | |
572 | * PLEASE make a compiler that doesn't use this assembler. | |
573 | * It is crufty to waste a compiler's time encoding things for this | |
574 | * assembler, which then wastes more time decoding it. | |
575 | * (And communicating via (linear) files is silly! | |
576 | * If you must pass stuff, please pass a tree!) | |
577 | */ | |
9471a360 KR |
578 | if ((c = *input_line_pointer++) == '\t' |
579 | || c == ' ' | |
580 | || c == '\f' | |
581 | || c == 0) | |
6efd877d KR |
582 | { |
583 | c = *input_line_pointer++; | |
584 | } | |
585 | know (c != ' '); /* No further leading whitespace. */ | |
586 | LISTING_NEWLINE (); | |
f8701a3f SC |
587 | /* |
588 | * C is the 1st significant character. | |
589 | * Input_line_pointer points after that character. | |
590 | */ | |
6efd877d | 591 | if (is_name_beginner (c)) |
6ef37255 KR |
592 | { |
593 | /* want user-defined label or pseudo/opcode */ | |
6efd877d KR |
594 | HANDLE_CONDITIONAL_ASSEMBLY (); |
595 | ||
f8701a3f | 596 | s = --input_line_pointer; |
6efd877d | 597 | c = get_symbol_end (); /* name's delimiter */ |
f8701a3f SC |
598 | /* |
599 | * C is character after symbol. | |
600 | * That character's place in the input line is now '\0'. | |
601 | * S points to the beginning of the symbol. | |
602 | * [In case of pseudo-op, s->'.'.] | |
603 | * Input_line_pointer->'\0' where c was. | |
604 | */ | |
9a7d824a | 605 | if (TC_START_LABEL(c, input_line_pointer)) |
6efd877d | 606 | { |
cef72a92 | 607 | if (flag_m68k_mri) |
7e047ac2 ILT |
608 | { |
609 | char *rest = input_line_pointer + 1; | |
610 | ||
611 | /* In MRI mode, \tsym: set 0 is permitted. */ | |
612 | ||
613 | if (*rest == ':') | |
614 | ++rest; | |
615 | if (*rest == ' ' || *rest == '\t') | |
616 | ++rest; | |
617 | if ((strncasecmp (rest, "EQU", 3) == 0 | |
618 | || strncasecmp (rest, "SET", 3) == 0) | |
619 | && (rest[3] == ' ' || rest[3] == '\t')) | |
620 | { | |
621 | input_line_pointer = rest + 3; | |
622 | equals (s); | |
623 | continue; | |
624 | } | |
625 | } | |
626 | ||
627 | line_label = colon (s); /* user-defined label */ | |
6efd877d | 628 | *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */ |
f8701a3f | 629 | /* Input_line_pointer->after ':'. */ |
6efd877d KR |
630 | SKIP_WHITESPACE (); |
631 | ||
f8701a3f | 632 | |
6efd877d | 633 | } |
4064305e SS |
634 | else if (c == '=' |
635 | || (input_line_pointer[1] == '=' | |
636 | #ifdef TC_EQUAL_IN_INSN | |
637 | && ! TC_EQUAL_IN_INSN (c, input_line_pointer) | |
638 | #endif | |
639 | )) | |
9c6d3f66 | 640 | { |
6efd877d KR |
641 | equals (s); |
642 | demand_empty_rest_of_line (); | |
643 | } | |
644 | else | |
645 | { /* expect pseudo-op or machine instruction */ | |
8ff6f40e ILT |
646 | pop = NULL; |
647 | ||
d4c8cbd8 JL |
648 | #define IGNORE_OPCODE_CASE |
649 | #ifdef IGNORE_OPCODE_CASE | |
650 | { | |
651 | char *s2 = s; | |
652 | while (*s2) | |
653 | { | |
654 | if (isupper (*s2)) | |
655 | *s2 = tolower (*s2); | |
656 | s2++; | |
657 | } | |
658 | } | |
659 | #endif | |
660 | ||
cef72a92 | 661 | if (flag_m68k_mri |
8ff6f40e | 662 | #ifdef NO_PSEUDO_DOT |
1356d77d | 663 | || 1 |
8ff6f40e | 664 | #endif |
1356d77d ILT |
665 | ) |
666 | { | |
667 | /* The MRI assembler and the m88k use pseudo-ops | |
668 | without a period. */ | |
669 | pop = (pseudo_typeS *) hash_find (po_hash, s); | |
670 | if (pop != NULL && pop->poc_handler == NULL) | |
671 | pop = NULL; | |
672 | } | |
8ff6f40e | 673 | |
7e047ac2 | 674 | if (pop != NULL |
cef72a92 | 675 | || (! flag_m68k_mri && *s == '.')) |
6efd877d KR |
676 | { |
677 | /* | |
9471a360 KR |
678 | * PSEUDO - OP. |
679 | * | |
680 | * WARNING: c has next char, which may be end-of-line. | |
681 | * We lookup the pseudo-op table with s+1 because we | |
682 | * already know that the pseudo-op begins with a '.'. | |
683 | */ | |
6efd877d | 684 | |
8ff6f40e ILT |
685 | if (pop == NULL) |
686 | pop = (pseudo_typeS *) hash_find (po_hash, s + 1); | |
6efd877d | 687 | |
286cb27a ILT |
688 | /* In MRI mode, we may need to insert an |
689 | automatic alignment directive. What a hack | |
690 | this is. */ | |
691 | if (mri_pending_align | |
692 | && (pop == NULL | |
693 | || ! ((pop->poc_handler == cons | |
694 | && pop->poc_val == 1) | |
695 | || (pop->poc_handler == s_space | |
696 | && pop->poc_val == 1)))) | |
697 | { | |
71dd3c40 | 698 | do_align (1, (char *) NULL, 0); |
286cb27a ILT |
699 | mri_pending_align = 0; |
700 | } | |
701 | ||
6efd877d | 702 | /* Print the error msg now, while we still can */ |
8ff6f40e | 703 | if (pop == NULL) |
6efd877d KR |
704 | { |
705 | as_bad ("Unknown pseudo-op: `%s'", s); | |
f8701a3f | 706 | *input_line_pointer = c; |
6efd877d | 707 | s_ignore (0); |
46b81190 | 708 | continue; |
6efd877d KR |
709 | } |
710 | ||
711 | /* Put it back for error messages etc. */ | |
712 | *input_line_pointer = c; | |
9c6d3f66 KR |
713 | /* The following skip of whitespace is compulsory. |
714 | A well shaped space is sometimes all that separates | |
715 | keyword from operands. */ | |
6efd877d | 716 | if (c == ' ' || c == '\t') |
d4c8cbd8 | 717 | input_line_pointer++; |
6efd877d | 718 | /* |
9471a360 KR |
719 | * Input_line is restored. |
720 | * Input_line_pointer->1st non-blank char | |
721 | * after pseudo-operation. | |
722 | */ | |
46b81190 | 723 | (*pop->poc_handler) (pop->poc_val); |
e28c40d7 ILT |
724 | |
725 | /* If that was .end, just get out now. */ | |
726 | if (pop->poc_handler == s_end) | |
727 | goto quit; | |
6efd877d KR |
728 | } |
729 | else | |
6efd877d | 730 | { /* machine instruction */ |
4026c122 ILT |
731 | int inquote = 0; |
732 | ||
286cb27a ILT |
733 | if (mri_pending_align) |
734 | { | |
71dd3c40 | 735 | do_align (1, (char *) NULL, 0); |
286cb27a ILT |
736 | mri_pending_align = 0; |
737 | } | |
738 | ||
6efd877d KR |
739 | /* WARNING: c has char, which may be end-of-line. */ |
740 | /* Also: input_line_pointer->`\0` where c was. */ | |
741 | *input_line_pointer = c; | |
58d4951d | 742 | while (!is_end_of_line[(unsigned char) *input_line_pointer] |
4026c122 | 743 | || inquote |
4064305e SS |
744 | #ifdef TC_EOL_IN_INSN |
745 | || TC_EOL_IN_INSN (input_line_pointer) | |
746 | #endif | |
747 | ) | |
6efd877d | 748 | { |
cef72a92 | 749 | if (flag_m68k_mri && *input_line_pointer == '\'') |
4026c122 | 750 | inquote = ! inquote; |
6efd877d KR |
751 | input_line_pointer++; |
752 | } | |
f8701a3f | 753 | |
6efd877d KR |
754 | c = *input_line_pointer; |
755 | *input_line_pointer = '\0'; | |
f8701a3f | 756 | |
326d16ca KH |
757 | #ifdef OBJ_GENERATE_ASM_LINENO |
758 | if (generate_asm_lineno == 0) | |
759 | { | |
f10a96cb | 760 | if (ecoff_no_current_file ()) |
326d16ca KH |
761 | generate_asm_lineno = 1; |
762 | } | |
f10a96cb ILT |
763 | if (generate_asm_lineno == 1) |
764 | { | |
1b434ced ILT |
765 | unsigned int lineno; |
766 | char *s; | |
767 | ||
daad3bbf | 768 | as_where (&s, &lineno); |
326d16ca | 769 | OBJ_GENERATE_ASM_LINENO (s, lineno); |
f10a96cb | 770 | } |
daad3bbf KH |
771 | #endif |
772 | ||
7e047ac2 ILT |
773 | if (macro_defined) |
774 | { | |
775 | sb out; | |
776 | const char *err; | |
777 | ||
778 | if (check_macro (s, &out, '\0', &err)) | |
779 | { | |
780 | if (err != NULL) | |
781 | as_bad (err); | |
782 | *input_line_pointer++ = c; | |
783 | input_scrub_include_sb (&out, | |
784 | input_line_pointer); | |
785 | sb_kill (&out); | |
786 | buffer_limit = | |
787 | input_scrub_next_buffer (&input_line_pointer); | |
788 | continue; | |
789 | } | |
790 | } | |
791 | ||
6efd877d | 792 | md_assemble (s); /* Assemble 1 instruction. */ |
f8701a3f | 793 | |
6efd877d | 794 | *input_line_pointer++ = c; |
f8701a3f | 795 | |
d4c8cbd8 JL |
796 | /* We resume loop AFTER the end-of-line from |
797 | this instruction. */ | |
6efd877d | 798 | } /* if (*s=='.') */ |
6efd877d | 799 | } /* if c==':' */ |
f8701a3f | 800 | continue; |
6efd877d | 801 | } /* if (is_name_beginner(c) */ |
f8701a3f | 802 | |
f8701a3f | 803 | |
d4c8cbd8 | 804 | /* Empty statement? */ |
58d4951d | 805 | if (is_end_of_line[(unsigned char) c]) |
d4c8cbd8 | 806 | continue; |
6efd877d | 807 | |
9777b772 KR |
808 | if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) |
809 | && isdigit (c)) | |
d4c8cbd8 JL |
810 | { |
811 | /* local label ("4:") */ | |
6efd877d KR |
812 | char *backup = input_line_pointer; |
813 | ||
814 | HANDLE_CONDITIONAL_ASSEMBLY (); | |
815 | ||
816 | temp = c - '0'; | |
817 | ||
818 | while (isdigit (*input_line_pointer)) | |
819 | { | |
820 | temp = (temp * 10) + *input_line_pointer - '0'; | |
821 | ++input_line_pointer; | |
822 | } /* read the whole number */ | |
823 | ||
9777b772 KR |
824 | if (LOCAL_LABELS_DOLLAR |
825 | && *input_line_pointer == '$' | |
6efd877d KR |
826 | && *(input_line_pointer + 1) == ':') |
827 | { | |
828 | input_line_pointer += 2; | |
829 | ||
830 | if (dollar_label_defined (temp)) | |
831 | { | |
832 | as_fatal ("label \"%d$\" redefined", temp); | |
833 | } | |
834 | ||
835 | define_dollar_label (temp); | |
836 | colon (dollar_label_name (temp, 0)); | |
837 | continue; | |
838 | } | |
6efd877d | 839 | |
9777b772 KR |
840 | if (LOCAL_LABELS_FB |
841 | && *input_line_pointer++ == ':') | |
6efd877d KR |
842 | { |
843 | fb_label_instance_inc (temp); | |
844 | colon (fb_label_name (temp, 0)); | |
845 | continue; | |
846 | } | |
6efd877d KR |
847 | |
848 | input_line_pointer = backup; | |
849 | } /* local label ("4:") */ | |
f8701a3f | 850 | |
6efd877d KR |
851 | if (c && strchr (line_comment_chars, c)) |
852 | { /* Its a comment. Better say APP or NO_APP */ | |
f8701a3f SC |
853 | char *ends; |
854 | char *new_buf; | |
855 | char *new_tmp; | |
604633ae | 856 | unsigned int new_length; |
f8701a3f | 857 | char *tmp_buf = 0; |
6efd877d KR |
858 | |
859 | bump_line_counters (); | |
860 | s = input_line_pointer; | |
861 | if (strncmp (s, "APP\n", 4)) | |
862 | continue; /* We ignore it */ | |
863 | s += 4; | |
864 | ||
865 | ends = strstr (s, "#NO_APP\n"); | |
866 | ||
867 | if (!ends) | |
868 | { | |
604633ae ILT |
869 | unsigned int tmp_len; |
870 | unsigned int num; | |
6efd877d | 871 | |
f8701a3f SC |
872 | /* The end of the #APP wasn't in this buffer. We |
873 | keep reading in buffers until we find the #NO_APP | |
874 | that goes with this #APP There is one. The specs | |
875 | guarentee it. . . */ | |
6efd877d | 876 | tmp_len = buffer_limit - s; |
85825401 | 877 | tmp_buf = xmalloc (tmp_len + 1); |
4380166d | 878 | memcpy (tmp_buf, s, tmp_len); |
6efd877d KR |
879 | do |
880 | { | |
881 | new_tmp = input_scrub_next_buffer (&buffer); | |
f8701a3f | 882 | if (!new_tmp) |
6efd877d | 883 | break; |
f8701a3f | 884 | else |
6efd877d | 885 | buffer_limit = new_tmp; |
f8701a3f | 886 | input_line_pointer = buffer; |
6efd877d | 887 | ends = strstr (buffer, "#NO_APP\n"); |
f8701a3f | 888 | if (ends) |
6efd877d | 889 | num = ends - buffer; |
f8701a3f | 890 | else |
6efd877d KR |
891 | num = buffer_limit - buffer; |
892 | ||
893 | tmp_buf = xrealloc (tmp_buf, tmp_len + num); | |
9eb5f4b8 | 894 | memcpy (tmp_buf + tmp_len, buffer, num); |
6efd877d KR |
895 | tmp_len += num; |
896 | } | |
897 | while (!ends); | |
898 | ||
899 | input_line_pointer = ends ? ends + 8 : NULL; | |
900 | ||
901 | s = tmp_buf; | |
902 | ends = s + tmp_len; | |
903 | ||
904 | } | |
905 | else | |
906 | { | |
907 | input_line_pointer = ends + 8; | |
908 | } | |
6efd877d KR |
909 | |
910 | scrub_string = s; | |
86038ada ILT |
911 | scrub_string_end = ends; |
912 | ||
913 | new_length = ends - s; | |
914 | new_buf = (char *) xmalloc (new_length); | |
915 | new_tmp = new_buf; | |
6efd877d KR |
916 | for (;;) |
917 | { | |
86038ada ILT |
918 | int space; |
919 | int size; | |
f8701a3f | 920 | |
86038ada ILT |
921 | space = (new_buf + new_length) - new_tmp; |
922 | size = do_scrub_chars (scrub_from_string, new_tmp, space); | |
923 | ||
924 | if (size < space) | |
6efd877d | 925 | { |
86038ada ILT |
926 | new_tmp += size; |
927 | break; | |
f8701a3f | 928 | } |
86038ada ILT |
929 | |
930 | new_buf = xrealloc (new_buf, new_length + 100); | |
931 | new_tmp = new_buf + new_length; | |
932 | new_length += 100; | |
fecd2382 | 933 | } |
f8701a3f SC |
934 | |
935 | if (tmp_buf) | |
6efd877d KR |
936 | free (tmp_buf); |
937 | old_buffer = buffer; | |
938 | old_input = input_line_pointer; | |
939 | old_limit = buffer_limit; | |
940 | buffer = new_buf; | |
941 | input_line_pointer = new_buf; | |
942 | buffer_limit = new_tmp; | |
f8701a3f SC |
943 | continue; |
944 | } | |
945 | ||
6efd877d | 946 | HANDLE_CONDITIONAL_ASSEMBLY (); |
f8701a3f | 947 | |
cef72a92 ILT |
948 | #ifdef tc_unrecognized_line |
949 | if (tc_unrecognized_line (c)) | |
950 | continue; | |
951 | #endif | |
952 | ||
f8701a3f SC |
953 | /* as_warn("Junk character %d.",c); Now done by ignore_rest */ |
954 | input_line_pointer--; /* Report unknown char as ignored. */ | |
6efd877d KR |
955 | ignore_rest_of_line (); |
956 | } /* while (input_line_pointer<buffer_limit) */ | |
a2a5a4fa KR |
957 | |
958 | #ifdef md_after_pass_hook | |
959 | md_after_pass_hook (); | |
960 | #endif | |
961 | ||
6efd877d KR |
962 | if (old_buffer) |
963 | { | |
86038ada | 964 | free (buffer); |
6efd877d KR |
965 | bump_line_counters (); |
966 | if (old_input != 0) | |
967 | { | |
968 | buffer = old_buffer; | |
969 | input_line_pointer = old_input; | |
970 | buffer_limit = old_limit; | |
f8701a3f SC |
971 | old_buffer = 0; |
972 | goto contin; | |
973 | } | |
974 | } | |
6efd877d | 975 | } /* while (more buffers to scan) */ |
f8701a3f | 976 | |
e28c40d7 ILT |
977 | quit: |
978 | input_scrub_close (); /* Close the input file */ | |
4075afe1 | 979 | } |
fecd2382 | 980 | |
18c9057f ILT |
981 | /* For most MRI pseudo-ops, the line actually ends at the first |
982 | nonquoted space. This function looks for that point, stuffs a null | |
983 | in, and sets *STOPCP to the character that used to be there, and | |
42ac8fa8 ILT |
984 | returns the location. |
985 | ||
986 | Until I hear otherwise, I am going to assume that this is only true | |
987 | for the m68k MRI assembler. */ | |
18c9057f ILT |
988 | |
989 | char * | |
990 | mri_comment_field (stopcp) | |
991 | char *stopcp; | |
992 | { | |
42ac8fa8 ILT |
993 | #ifdef TC_M68K |
994 | ||
18c9057f ILT |
995 | char *s; |
996 | int inquote = 0; | |
997 | ||
cef72a92 | 998 | know (flag_m68k_mri); |
18c9057f ILT |
999 | |
1000 | for (s = input_line_pointer; | |
1001 | ((! is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t') | |
1002 | || inquote); | |
1003 | s++) | |
1004 | { | |
1005 | if (*s == '\'') | |
1006 | inquote = ! inquote; | |
1007 | } | |
1008 | *stopcp = *s; | |
1009 | *s = '\0'; | |
1010 | return s; | |
42ac8fa8 ILT |
1011 | |
1012 | #else | |
1013 | ||
1014 | char *s; | |
1015 | ||
1016 | for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++) | |
1017 | ; | |
1018 | *stopcp = *s; | |
1019 | *s = '\0'; | |
1020 | return s; | |
1021 | ||
1022 | #endif | |
1023 | ||
18c9057f ILT |
1024 | } |
1025 | ||
1026 | /* Skip to the end of an MRI comment field. */ | |
1027 | ||
1028 | void | |
1029 | mri_comment_end (stop, stopc) | |
1030 | char *stop; | |
1031 | int stopc; | |
1032 | { | |
1033 | know (flag_mri); | |
1034 | ||
1035 | input_line_pointer = stop; | |
1036 | *stop = stopc; | |
1037 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1038 | ++input_line_pointer; | |
1039 | } | |
1040 | ||
6efd877d | 1041 | void |
604633ae ILT |
1042 | s_abort (ignore) |
1043 | int ignore; | |
6efd877d KR |
1044 | { |
1045 | as_fatal (".abort detected. Abandoning ship."); | |
4075afe1 KR |
1046 | } |
1047 | ||
1048 | /* Guts of .align directive. */ | |
1049 | static void | |
71dd3c40 | 1050 | do_align (n, fill, len) |
4075afe1 KR |
1051 | int n; |
1052 | char *fill; | |
71dd3c40 | 1053 | int len; |
4075afe1 KR |
1054 | { |
1055 | #ifdef md_do_align | |
71dd3c40 | 1056 | md_do_align (n, fill, len, just_record_alignment); |
4075afe1 KR |
1057 | #endif |
1058 | if (!fill) | |
1059 | { | |
1060 | /* @@ Fix this right for BFD! */ | |
1061 | static char zero; | |
1062 | static char nop_opcode = NOP_OPCODE; | |
1063 | ||
1064 | if (now_seg != data_section && now_seg != bss_section) | |
1065 | { | |
1066 | fill = &nop_opcode; | |
1067 | } | |
1068 | else | |
1069 | { | |
1070 | fill = &zero; | |
1071 | } | |
71dd3c40 | 1072 | len = 1; |
4075afe1 | 1073 | } |
71dd3c40 | 1074 | |
4075afe1 KR |
1075 | /* Only make a frag if we HAVE to. . . */ |
1076 | if (n && !need_pass_2) | |
71dd3c40 ILT |
1077 | { |
1078 | if (len <= 1) | |
1079 | frag_align (n, *fill); | |
1080 | else | |
1081 | frag_align_pattern (n, fill, len); | |
1082 | } | |
4075afe1 | 1083 | |
c02fd8dc | 1084 | #ifdef md_do_align |
4075afe1 | 1085 | just_record_alignment: |
c02fd8dc ILT |
1086 | #endif |
1087 | ||
4075afe1 KR |
1088 | record_alignment (now_seg, n); |
1089 | } | |
fecd2382 RP |
1090 | |
1091 | /* For machines where ".align 4" means align to a 4 byte boundary. */ | |
6efd877d KR |
1092 | void |
1093 | s_align_bytes (arg) | |
1094 | int arg; | |
fecd2382 | 1095 | { |
6efd877d | 1096 | register unsigned int temp; |
4075afe1 | 1097 | char temp_fill; |
6efd877d KR |
1098 | unsigned int i = 0; |
1099 | unsigned long max_alignment = 1 << 15; | |
18c9057f ILT |
1100 | char *stop = NULL; |
1101 | char stopc; | |
1102 | ||
1103 | if (flag_mri) | |
1104 | stop = mri_comment_field (&stopc); | |
f8701a3f | 1105 | |
58d4951d | 1106 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
4080c270 ILT |
1107 | { |
1108 | if (arg < 0) | |
1109 | temp = 0; | |
1110 | else | |
1111 | temp = arg; /* Default value from pseudo-op table */ | |
1112 | } | |
6efd877d KR |
1113 | else |
1114 | temp = get_absolute_expression (); | |
f8701a3f | 1115 | |
6efd877d KR |
1116 | if (temp > max_alignment) |
1117 | { | |
1118 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
f8701a3f SC |
1119 | } |
1120 | ||
4075afe1 KR |
1121 | /* For the sparc, `.align (1<<n)' actually means `.align n' so we |
1122 | have to convert it. */ | |
6efd877d KR |
1123 | if (temp != 0) |
1124 | { | |
1125 | for (i = 0; (temp & 1) == 0; temp >>= 1, ++i) | |
1126 | ; | |
f8701a3f | 1127 | } |
6efd877d KR |
1128 | if (temp != 1) |
1129 | as_bad ("Alignment not a power of 2"); | |
f8701a3f | 1130 | |
6efd877d KR |
1131 | temp = i; |
1132 | if (*input_line_pointer == ',') | |
1133 | { | |
71dd3c40 | 1134 | offsetT fillval; |
4080c270 | 1135 | int len; |
71dd3c40 | 1136 | |
6efd877d | 1137 | input_line_pointer++; |
71dd3c40 | 1138 | fillval = get_absolute_expression (); |
4080c270 ILT |
1139 | if (arg >= 0) |
1140 | len = 1; | |
1141 | else | |
1142 | len = - arg; | |
1143 | if (len <= 1) | |
71dd3c40 ILT |
1144 | { |
1145 | temp_fill = fillval; | |
4080c270 | 1146 | do_align (temp, &temp_fill, len); |
71dd3c40 ILT |
1147 | } |
1148 | else | |
1149 | { | |
1150 | char ab[16]; | |
1151 | ||
4080c270 | 1152 | if (len > sizeof ab) |
71dd3c40 | 1153 | abort (); |
4080c270 ILT |
1154 | md_number_to_chars (ab, fillval, len); |
1155 | do_align (temp, ab, len); | |
71dd3c40 | 1156 | } |
f8701a3f | 1157 | } |
6efd877d | 1158 | else |
71dd3c40 | 1159 | { |
4080c270 | 1160 | if (arg < 0) |
71dd3c40 ILT |
1161 | as_warn ("expected fill pattern missing"); |
1162 | do_align (temp, (char *) NULL, 0); | |
1163 | } | |
49864cfa | 1164 | |
18c9057f ILT |
1165 | if (flag_mri) |
1166 | mri_comment_end (stop, stopc); | |
1167 | ||
6efd877d | 1168 | demand_empty_rest_of_line (); |
4075afe1 | 1169 | } |
fecd2382 RP |
1170 | |
1171 | /* For machines where ".align 4" means align to 2**4 boundary. */ | |
6efd877d | 1172 | void |
71dd3c40 ILT |
1173 | s_align_ptwo (arg) |
1174 | int arg; | |
6efd877d KR |
1175 | { |
1176 | register int temp; | |
4075afe1 | 1177 | char temp_fill; |
6efd877d | 1178 | long max_alignment = 15; |
18c9057f ILT |
1179 | char *stop = NULL; |
1180 | char stopc; | |
1181 | ||
1182 | if (flag_mri) | |
1183 | stop = mri_comment_field (&stopc); | |
6efd877d KR |
1184 | |
1185 | temp = get_absolute_expression (); | |
1186 | if (temp > max_alignment) | |
1187 | as_bad ("Alignment too large: %d. assumed.", temp = max_alignment); | |
1188 | else if (temp < 0) | |
1189 | { | |
1190 | as_bad ("Alignment negative. 0 assumed."); | |
1191 | temp = 0; | |
1192 | } | |
1193 | if (*input_line_pointer == ',') | |
1194 | { | |
71dd3c40 | 1195 | offsetT fillval; |
4080c270 | 1196 | int len; |
71dd3c40 | 1197 | |
6efd877d | 1198 | input_line_pointer++; |
71dd3c40 | 1199 | fillval = get_absolute_expression (); |
4080c270 ILT |
1200 | if (arg >= 0) |
1201 | len = 1; | |
1202 | else | |
1203 | len = - arg; | |
1204 | if (len <= 1) | |
71dd3c40 ILT |
1205 | { |
1206 | temp_fill = fillval; | |
4080c270 | 1207 | do_align (temp, &temp_fill, len); |
71dd3c40 ILT |
1208 | } |
1209 | else | |
1210 | { | |
1211 | char ab[16]; | |
1212 | ||
4080c270 | 1213 | if (len > sizeof ab) |
71dd3c40 | 1214 | abort (); |
4080c270 ILT |
1215 | md_number_to_chars (ab, fillval, len); |
1216 | do_align (temp, ab, len); | |
71dd3c40 | 1217 | } |
6efd877d KR |
1218 | } |
1219 | else | |
71dd3c40 | 1220 | { |
4080c270 | 1221 | if (arg < 0) |
71dd3c40 ILT |
1222 | as_warn ("expected fill pattern missing"); |
1223 | do_align (temp, (char *) NULL, 0); | |
1224 | } | |
6efd877d | 1225 | |
18c9057f ILT |
1226 | if (flag_mri) |
1227 | mri_comment_end (stop, stopc); | |
1228 | ||
6efd877d | 1229 | demand_empty_rest_of_line (); |
4075afe1 | 1230 | } |
6efd877d KR |
1231 | |
1232 | void | |
604633ae ILT |
1233 | s_comm (ignore) |
1234 | int ignore; | |
6efd877d KR |
1235 | { |
1236 | register char *name; | |
1237 | register char c; | |
1238 | register char *p; | |
58d4951d | 1239 | offsetT temp; |
6efd877d | 1240 | register symbolS *symbolP; |
18c9057f ILT |
1241 | char *stop = NULL; |
1242 | char stopc; | |
1243 | ||
1244 | if (flag_mri) | |
1245 | stop = mri_comment_field (&stopc); | |
6efd877d KR |
1246 | |
1247 | name = input_line_pointer; | |
1248 | c = get_symbol_end (); | |
1249 | /* just after name is now '\0' */ | |
1250 | p = input_line_pointer; | |
1251 | *p = c; | |
1252 | SKIP_WHITESPACE (); | |
1253 | if (*input_line_pointer != ',') | |
1254 | { | |
1255 | as_bad ("Expected comma after symbol-name: rest of line ignored."); | |
18c9057f ILT |
1256 | if (flag_mri) |
1257 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1258 | ignore_rest_of_line (); |
1259 | return; | |
1260 | } | |
1261 | input_line_pointer++; /* skip ',' */ | |
1262 | if ((temp = get_absolute_expression ()) < 0) | |
1263 | { | |
58d4951d | 1264 | as_warn (".COMMon length (%ld.) <0! Ignored.", (long) temp); |
18c9057f ILT |
1265 | if (flag_mri) |
1266 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1267 | ignore_rest_of_line (); |
1268 | return; | |
1269 | } | |
1270 | *p = 0; | |
1271 | symbolP = symbol_find_or_make (name); | |
1272 | *p = c; | |
1273 | if (S_IS_DEFINED (symbolP)) | |
1274 | { | |
6ef37255 KR |
1275 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
1276 | S_GET_NAME (symbolP)); | |
18c9057f ILT |
1277 | if (flag_mri) |
1278 | mri_comment_end (stop, stopc); | |
6efd877d KR |
1279 | ignore_rest_of_line (); |
1280 | return; | |
1281 | } | |
1282 | if (S_GET_VALUE (symbolP)) | |
1283 | { | |
58d4951d ILT |
1284 | if (S_GET_VALUE (symbolP) != (valueT) temp) |
1285 | as_bad ("Length of .comm \"%s\" is already %ld. Not changed to %ld.", | |
6efd877d | 1286 | S_GET_NAME (symbolP), |
58d4951d ILT |
1287 | (long) S_GET_VALUE (symbolP), |
1288 | (long) temp); | |
6efd877d KR |
1289 | } |
1290 | else | |
1291 | { | |
58d4951d | 1292 | S_SET_VALUE (symbolP, (valueT) temp); |
6efd877d KR |
1293 | S_SET_EXTERNAL (symbolP); |
1294 | } | |
9471a360 | 1295 | #ifdef OBJ_VMS |
def66e24 DM |
1296 | { |
1297 | extern int flag_one; | |
1298 | if ( (!temp) || !flag_one) | |
1299 | S_GET_OTHER(symbolP) = const_flag; | |
1300 | } | |
9471a360 | 1301 | #endif /* not OBJ_VMS */ |
6efd877d | 1302 | know (symbolP->sy_frag == &zero_address_frag); |
18c9057f ILT |
1303 | |
1304 | if (flag_mri) | |
1305 | mri_comment_end (stop, stopc); | |
1306 | ||
6efd877d KR |
1307 | demand_empty_rest_of_line (); |
1308 | } /* s_comm() */ | |
fecd2382 | 1309 | |
1356d77d ILT |
1310 | /* The MRI COMMON pseudo-op. We handle this by creating a common |
1311 | symbol with the appropriate name. We make s_space do the right | |
1312 | thing by increasing the size. */ | |
1313 | ||
1314 | void | |
1315 | s_mri_common (small) | |
1316 | int small; | |
1317 | { | |
1318 | char *name; | |
1319 | char c; | |
1320 | char *alc = NULL; | |
1321 | symbolS *sym; | |
1322 | offsetT align; | |
18c9057f ILT |
1323 | char *stop = NULL; |
1324 | char stopc; | |
1356d77d ILT |
1325 | |
1326 | if (! flag_mri) | |
1327 | { | |
1328 | s_comm (0); | |
1329 | return; | |
1330 | } | |
1331 | ||
18c9057f ILT |
1332 | stop = mri_comment_field (&stopc); |
1333 | ||
1356d77d ILT |
1334 | SKIP_WHITESPACE (); |
1335 | ||
1336 | name = input_line_pointer; | |
1337 | if (! isdigit ((unsigned char) *name)) | |
1338 | c = get_symbol_end (); | |
1339 | else | |
1340 | { | |
1341 | do | |
1342 | { | |
1343 | ++input_line_pointer; | |
1344 | } | |
1345 | while (isdigit ((unsigned char) *input_line_pointer)); | |
1346 | c = *input_line_pointer; | |
1347 | *input_line_pointer = '\0'; | |
1348 | ||
7e047ac2 | 1349 | if (line_label != NULL) |
1356d77d | 1350 | { |
7e047ac2 | 1351 | alc = (char *) xmalloc (strlen (S_GET_NAME (line_label)) |
1356d77d ILT |
1352 | + (input_line_pointer - name) |
1353 | + 1); | |
7e047ac2 | 1354 | sprintf (alc, "%s%s", name, S_GET_NAME (line_label)); |
1356d77d ILT |
1355 | name = alc; |
1356 | } | |
1357 | } | |
1358 | ||
1359 | sym = symbol_find_or_make (name); | |
1360 | *input_line_pointer = c; | |
1361 | if (alc != NULL) | |
1362 | free (alc); | |
1363 | ||
1364 | if (*input_line_pointer != ',') | |
1365 | align = 0; | |
1366 | else | |
1367 | { | |
1368 | ++input_line_pointer; | |
1369 | align = get_absolute_expression (); | |
1370 | } | |
1371 | ||
1372 | if (S_IS_DEFINED (sym)) | |
1373 | { | |
1374 | #if defined (S_IS_COMMON) || defined (BFD_ASSEMBLER) | |
1375 | if (! S_IS_COMMON (sym)) | |
1376 | #endif | |
1377 | { | |
1378 | as_bad ("attempt to re-define symbol `%s'", S_GET_NAME (sym)); | |
18c9057f | 1379 | mri_comment_end (stop, stopc); |
1356d77d ILT |
1380 | ignore_rest_of_line (); |
1381 | return; | |
1382 | } | |
1383 | } | |
1384 | ||
1385 | S_SET_EXTERNAL (sym); | |
1386 | mri_common_symbol = sym; | |
1387 | ||
1388 | #ifdef S_SET_ALIGN | |
1389 | if (align != 0) | |
1390 | S_SET_ALIGN (sym, align); | |
1391 | #endif | |
1392 | ||
7e047ac2 | 1393 | if (line_label != NULL) |
1356d77d | 1394 | { |
7e047ac2 ILT |
1395 | line_label->sy_value.X_op = O_symbol; |
1396 | line_label->sy_value.X_add_symbol = sym; | |
1397 | line_label->sy_value.X_add_number = S_GET_VALUE (sym); | |
1398 | line_label->sy_frag = &zero_address_frag; | |
1399 | S_SET_SEGMENT (line_label, expr_section); | |
1356d77d ILT |
1400 | } |
1401 | ||
1402 | /* FIXME: We just ignore the small argument, which distinguishes | |
1403 | COMMON and COMMON.S. I don't know what we can do about it. */ | |
1404 | ||
1405 | /* Ignore the type and hptype. */ | |
1406 | if (*input_line_pointer == ',') | |
1407 | input_line_pointer += 2; | |
1408 | if (*input_line_pointer == ',') | |
1409 | input_line_pointer += 2; | |
18c9057f ILT |
1410 | |
1411 | mri_comment_end (stop, stopc); | |
1412 | ||
1356d77d ILT |
1413 | demand_empty_rest_of_line (); |
1414 | } | |
1415 | ||
fecd2382 | 1416 | void |
604633ae ILT |
1417 | s_data (ignore) |
1418 | int ignore; | |
fecd2382 | 1419 | { |
ffffc8fb | 1420 | segT section; |
6efd877d | 1421 | register int temp; |
f8701a3f | 1422 | |
6efd877d | 1423 | temp = get_absolute_expression (); |
def66e24 | 1424 | if (flag_readonly_data_in_text) |
ffffc8fb ILT |
1425 | { |
1426 | section = text_section; | |
1427 | temp += 1000; | |
1428 | } | |
1429 | else | |
1430 | section = data_section; | |
1431 | ||
ffffc8fb | 1432 | subseg_set (section, (subsegT) temp); |
f8701a3f | 1433 | |
9471a360 | 1434 | #ifdef OBJ_VMS |
6efd877d | 1435 | const_flag = 0; |
fecd2382 | 1436 | #endif |
6efd877d | 1437 | demand_empty_rest_of_line (); |
fecd2382 RP |
1438 | } |
1439 | ||
9a7d824a | 1440 | /* Handle the .appfile pseudo-op. This is automatically generated by |
86038ada ILT |
1441 | do_scrub_chars when a preprocessor # line comment is seen with a |
1442 | file name. This default definition may be overridden by the object | |
1443 | or CPU specific pseudo-ops. This function is also the default | |
1444 | definition for .file; the APPFILE argument is 1 for .appfile, 0 for | |
1445 | .file. */ | |
9a7d824a | 1446 | |
6efd877d | 1447 | void |
9a7d824a ILT |
1448 | s_app_file (appfile) |
1449 | int appfile; | |
6efd877d KR |
1450 | { |
1451 | register char *s; | |
1452 | int length; | |
f8701a3f | 1453 | |
6efd877d KR |
1454 | /* Some assemblers tolerate immediately following '"' */ |
1455 | if ((s = demand_copy_string (&length)) != 0) | |
1456 | { | |
9a7d824a ILT |
1457 | /* If this is a fake .appfile, a fake newline was inserted into |
1458 | the buffer. Passing -2 to new_logical_line tells it to | |
1459 | account for it. */ | |
1460 | new_logical_line (s, appfile ? -2 : -1); | |
cef72a92 ILT |
1461 | |
1462 | /* In MRI mode, the preprocessor may have inserted an extraneous | |
1463 | backquote. */ | |
1464 | if (flag_m68k_mri | |
1465 | && *input_line_pointer == '\'' | |
1466 | && is_end_of_line[(unsigned char) input_line_pointer[1]]) | |
1467 | ++input_line_pointer; | |
1468 | ||
6efd877d | 1469 | demand_empty_rest_of_line (); |
9a7d824a ILT |
1470 | #ifdef LISTING |
1471 | if (listing) | |
1472 | listing_source_file (s); | |
1473 | #endif | |
6efd877d | 1474 | } |
2209b19c KR |
1475 | #ifdef obj_app_file |
1476 | obj_app_file (s); | |
40324362 KR |
1477 | #endif |
1478 | } | |
fecd2382 | 1479 | |
9a7d824a | 1480 | /* Handle the .appline pseudo-op. This is automatically generated by |
86038ada ILT |
1481 | do_scrub_chars when a preprocessor # line comment is seen. This |
1482 | default definition may be overridden by the object or CPU specific | |
1483 | pseudo-ops. */ | |
9a7d824a ILT |
1484 | |
1485 | void | |
604633ae ILT |
1486 | s_app_line (ignore) |
1487 | int ignore; | |
9a7d824a ILT |
1488 | { |
1489 | int l; | |
1490 | ||
1491 | /* The given number is that of the next line. */ | |
1492 | l = get_absolute_expression () - 1; | |
931a8fab KR |
1493 | if (l < 0) |
1494 | /* Some of the back ends can't deal with non-positive line numbers. | |
1495 | Besides, it's silly. */ | |
1496 | as_warn ("Line numbers must be positive; line number %d rejected.", l+1); | |
1497 | else | |
1498 | { | |
1499 | new_logical_line ((char *) NULL, l); | |
9a7d824a | 1500 | #ifdef LISTING |
931a8fab KR |
1501 | if (listing) |
1502 | listing_source_line (l); | |
9a7d824a | 1503 | #endif |
931a8fab | 1504 | } |
9a7d824a ILT |
1505 | demand_empty_rest_of_line (); |
1506 | } | |
1507 | ||
e28c40d7 ILT |
1508 | /* Handle the .end pseudo-op. Actually, the real work is done in |
1509 | read_a_source_file. */ | |
1510 | ||
1511 | void | |
1512 | s_end (ignore) | |
1513 | int ignore; | |
1514 | { | |
1515 | if (flag_mri) | |
1516 | { | |
1517 | /* The MRI assembler permits the start symbol to follow .end, | |
1518 | but we don't support that. */ | |
1519 | SKIP_WHITESPACE (); | |
18c9057f ILT |
1520 | if (! is_end_of_line[(unsigned char) *input_line_pointer] |
1521 | && *input_line_pointer != '*' | |
1522 | && *input_line_pointer != '!') | |
e28c40d7 ILT |
1523 | as_warn ("start address not supported"); |
1524 | } | |
1525 | } | |
1526 | ||
42ac8fa8 ILT |
1527 | /* Handle the .err pseudo-op. */ |
1528 | ||
1529 | void | |
1530 | s_err (ignore) | |
1531 | int ignore; | |
1532 | { | |
1533 | as_bad (".err encountered"); | |
1534 | demand_empty_rest_of_line (); | |
1535 | } | |
1536 | ||
e28c40d7 ILT |
1537 | /* Handle the MRI fail pseudo-op. */ |
1538 | ||
1539 | void | |
1540 | s_fail (ignore) | |
1541 | int ignore; | |
1542 | { | |
1543 | offsetT temp; | |
18c9057f ILT |
1544 | char *stop = NULL; |
1545 | char stopc; | |
1546 | ||
1547 | if (flag_mri) | |
1548 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
1549 | |
1550 | temp = get_absolute_expression (); | |
1551 | if (temp >= 500) | |
1552 | as_warn (".fail %ld encountered", (long) temp); | |
1553 | else | |
1554 | as_bad (".fail %ld encountered", (long) temp); | |
18c9057f ILT |
1555 | |
1556 | if (flag_mri) | |
1557 | mri_comment_end (stop, stopc); | |
1558 | ||
e28c40d7 ILT |
1559 | demand_empty_rest_of_line (); |
1560 | } | |
1561 | ||
6efd877d | 1562 | void |
604633ae ILT |
1563 | s_fill (ignore) |
1564 | int ignore; | |
6efd877d KR |
1565 | { |
1566 | long temp_repeat = 0; | |
1567 | long temp_size = 1; | |
1568 | register long temp_fill = 0; | |
1569 | char *p; | |
f8701a3f | 1570 | |
624c91d1 KR |
1571 | #ifdef md_flush_pending_output |
1572 | md_flush_pending_output (); | |
1573 | #endif | |
7c2d4011 | 1574 | |
6efd877d KR |
1575 | temp_repeat = get_absolute_expression (); |
1576 | if (*input_line_pointer == ',') | |
1577 | { | |
1578 | input_line_pointer++; | |
1579 | temp_size = get_absolute_expression (); | |
1580 | if (*input_line_pointer == ',') | |
7c2d4011 SC |
1581 | { |
1582 | input_line_pointer++; | |
6efd877d | 1583 | temp_fill = get_absolute_expression (); |
fecd2382 | 1584 | } |
6efd877d | 1585 | } |
c8863a58 | 1586 | /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */ |
fecd2382 | 1587 | #define BSD_FILL_SIZE_CROCK_8 (8) |
6efd877d KR |
1588 | if (temp_size > BSD_FILL_SIZE_CROCK_8) |
1589 | { | |
1590 | as_warn (".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8); | |
1591 | temp_size = BSD_FILL_SIZE_CROCK_8; | |
1592 | } | |
1593 | if (temp_size < 0) | |
1594 | { | |
1595 | as_warn ("Size negative: .fill ignored."); | |
1596 | temp_size = 0; | |
1597 | } | |
1598 | else if (temp_repeat <= 0) | |
1599 | { | |
1600 | as_warn ("Repeat < 0, .fill ignored"); | |
1601 | temp_size = 0; | |
1602 | } | |
7fd3560a | 1603 | |
6efd877d KR |
1604 | if (temp_size && !need_pass_2) |
1605 | { | |
1606 | p = frag_var (rs_fill, (int) temp_size, (int) temp_size, (relax_substateT) 0, (symbolS *) 0, temp_repeat, (char *) 0); | |
604633ae | 1607 | memset (p, 0, (unsigned int) temp_size); |
c8863a58 KR |
1608 | /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX |
1609 | * flavoured AS. The following bizzare behaviour is to be | |
1610 | * compatible with above. I guess they tried to take up to 8 | |
1611 | * bytes from a 4-byte expression and they forgot to sign | |
1612 | * extend. Un*x Sux. */ | |
fecd2382 | 1613 | #define BSD_FILL_SIZE_CROCK_4 (4) |
604633ae | 1614 | md_number_to_chars (p, (valueT) temp_fill, |
c8863a58 KR |
1615 | (temp_size > BSD_FILL_SIZE_CROCK_4 |
1616 | ? BSD_FILL_SIZE_CROCK_4 | |
1617 | : (int) temp_size)); | |
1618 | /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes) | |
1619 | * but emits no error message because it seems a legal thing to do. | |
1620 | * It is a degenerate case of .fill but could be emitted by a compiler. | |
1621 | */ | |
6efd877d | 1622 | } |
6efd877d | 1623 | demand_empty_rest_of_line (); |
f8701a3f SC |
1624 | } |
1625 | ||
6efd877d | 1626 | void |
604633ae ILT |
1627 | s_globl (ignore) |
1628 | int ignore; | |
6efd877d | 1629 | { |
40324362 KR |
1630 | char *name; |
1631 | int c; | |
1632 | symbolS *symbolP; | |
18c9057f ILT |
1633 | char *stop = NULL; |
1634 | char stopc; | |
1635 | ||
1636 | if (flag_mri) | |
1637 | stop = mri_comment_field (&stopc); | |
fecd2382 | 1638 | |
6efd877d KR |
1639 | do |
1640 | { | |
1641 | name = input_line_pointer; | |
1642 | c = get_symbol_end (); | |
1643 | symbolP = symbol_find_or_make (name); | |
1644 | *input_line_pointer = c; | |
1645 | SKIP_WHITESPACE (); | |
1646 | S_SET_EXTERNAL (symbolP); | |
1647 | if (c == ',') | |
1648 | { | |
1649 | input_line_pointer++; | |
1650 | SKIP_WHITESPACE (); | |
1651 | if (*input_line_pointer == '\n') | |
1652 | c = '\n'; | |
1653 | } | |
1654 | } | |
1655 | while (c == ','); | |
18c9057f ILT |
1656 | |
1657 | if (flag_mri) | |
1658 | mri_comment_end (stop, stopc); | |
1659 | ||
6efd877d | 1660 | demand_empty_rest_of_line (); |
40324362 | 1661 | } |
6efd877d | 1662 | |
7e047ac2 ILT |
1663 | /* Handle the MRI IRP and IRPC pseudo-ops. */ |
1664 | ||
1665 | void | |
1666 | s_irp (irpc) | |
1667 | int irpc; | |
1668 | { | |
1669 | char *file; | |
1670 | unsigned int line; | |
1671 | sb s; | |
1672 | const char *err; | |
1673 | sb out; | |
1674 | ||
1675 | as_where (&file, &line); | |
1676 | ||
1677 | sb_new (&s); | |
1678 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1679 | sb_add_char (&s, *input_line_pointer++); | |
1680 | ||
1681 | sb_new (&out); | |
1682 | ||
1683 | err = expand_irp (irpc, 0, &s, &out, get_line_sb, '\0'); | |
1684 | if (err != NULL) | |
1685 | as_bad_where (file, line, "%s", err); | |
1686 | ||
1687 | sb_kill (&s); | |
1688 | ||
1689 | input_scrub_include_sb (&out, input_line_pointer); | |
1690 | sb_kill (&out); | |
1691 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
1692 | } | |
1693 | ||
7d3741ed ILT |
1694 | /* Handle the .linkonce pseudo-op. This tells the assembler to mark |
1695 | the section to only be linked once. However, this is not supported | |
1696 | by most object file formats. This takes an optional argument, | |
1697 | which is what to do about duplicates. */ | |
1698 | ||
1699 | void | |
1700 | s_linkonce (ignore) | |
1701 | int ignore; | |
1702 | { | |
1703 | enum linkonce_type type; | |
1704 | ||
1705 | SKIP_WHITESPACE (); | |
1706 | ||
1707 | type = LINKONCE_DISCARD; | |
1708 | ||
1709 | if (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
1710 | { | |
1711 | char *s; | |
1712 | char c; | |
1713 | ||
1714 | s = input_line_pointer; | |
1715 | c = get_symbol_end (); | |
1716 | if (strcasecmp (s, "discard") == 0) | |
1717 | type = LINKONCE_DISCARD; | |
1718 | else if (strcasecmp (s, "one_only") == 0) | |
1719 | type = LINKONCE_ONE_ONLY; | |
1720 | else if (strcasecmp (s, "same_size") == 0) | |
1721 | type = LINKONCE_SAME_SIZE; | |
1722 | else if (strcasecmp (s, "same_contents") == 0) | |
1723 | type = LINKONCE_SAME_CONTENTS; | |
1724 | else | |
1725 | as_warn ("unrecognized .linkonce type `%s'", s); | |
1726 | ||
1727 | *input_line_pointer = c; | |
1728 | } | |
1729 | ||
1730 | #ifdef obj_handle_link_once | |
1731 | obj_handle_link_once (type); | |
1732 | #else /* ! defined (obj_handle_link_once) */ | |
1733 | #ifdef BFD_ASSEMBLER | |
1734 | { | |
1735 | flagword flags; | |
1736 | ||
1737 | if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0) | |
1738 | as_warn (".linkonce is not supported for this object file format"); | |
1739 | ||
1740 | flags = bfd_get_section_flags (stdoutput, now_seg); | |
1741 | flags |= SEC_LINK_ONCE; | |
1742 | switch (type) | |
1743 | { | |
1744 | default: | |
1745 | abort (); | |
1746 | case LINKONCE_DISCARD: | |
1747 | flags |= SEC_LINK_DUPLICATES_DISCARD; | |
1748 | break; | |
1749 | case LINKONCE_ONE_ONLY: | |
1750 | flags |= SEC_LINK_DUPLICATES_ONE_ONLY; | |
1751 | break; | |
1752 | case LINKONCE_SAME_SIZE: | |
1753 | flags |= SEC_LINK_DUPLICATES_SAME_SIZE; | |
1754 | break; | |
1755 | case LINKONCE_SAME_CONTENTS: | |
1756 | flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS; | |
1757 | break; | |
1758 | } | |
1759 | if (! bfd_set_section_flags (stdoutput, now_seg, flags)) | |
1760 | as_bad ("bfd_set_section_flags: %s", | |
1761 | bfd_errmsg (bfd_get_error ())); | |
1762 | } | |
1763 | #else /* ! defined (BFD_ASSEMBLER) */ | |
1764 | as_warn (".linkonce is not supported for this object file format"); | |
1765 | #endif /* ! defined (BFD_ASSEMBLER) */ | |
1766 | #endif /* ! defined (obj_handle_link_once) */ | |
1767 | ||
1768 | demand_empty_rest_of_line (); | |
1769 | } | |
1770 | ||
6efd877d KR |
1771 | void |
1772 | s_lcomm (needs_align) | |
c8863a58 KR |
1773 | /* 1 if this was a ".bss" directive, which may require a 3rd argument |
1774 | (alignment); 0 if it was an ".lcomm" (2 args only) */ | |
1775 | int needs_align; | |
fecd2382 | 1776 | { |
6efd877d KR |
1777 | register char *name; |
1778 | register char c; | |
1779 | register char *p; | |
1780 | register int temp; | |
1781 | register symbolS *symbolP; | |
9a7d824a ILT |
1782 | segT current_seg = now_seg; |
1783 | subsegT current_subseg = now_subseg; | |
6efd877d KR |
1784 | const int max_alignment = 15; |
1785 | int align = 0; | |
9a7d824a | 1786 | segT bss_seg = bss_section; |
6efd877d KR |
1787 | |
1788 | name = input_line_pointer; | |
1789 | c = get_symbol_end (); | |
1790 | p = input_line_pointer; | |
1791 | *p = c; | |
1792 | SKIP_WHITESPACE (); | |
46b81190 ILT |
1793 | |
1794 | /* Accept an optional comma after the name. The comma used to be | |
1795 | required, but Irix 5 cc does not generate it. */ | |
1796 | if (*input_line_pointer == ',') | |
6efd877d | 1797 | { |
46b81190 ILT |
1798 | ++input_line_pointer; |
1799 | SKIP_WHITESPACE (); | |
6efd877d | 1800 | } |
f8701a3f | 1801 | |
6efd877d KR |
1802 | if (*input_line_pointer == '\n') |
1803 | { | |
1804 | as_bad ("Missing size expression"); | |
1805 | return; | |
1806 | } | |
f8701a3f | 1807 | |
6efd877d KR |
1808 | if ((temp = get_absolute_expression ()) < 0) |
1809 | { | |
1810 | as_warn ("BSS length (%d.) <0! Ignored.", temp); | |
1811 | ignore_rest_of_line (); | |
1812 | return; | |
1813 | } | |
f8701a3f | 1814 | |
2ef7731d | 1815 | #if defined (TC_MIPS) || defined (TC_ALPHA) |
a2a5a4fa KR |
1816 | if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour |
1817 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) | |
46b81190 | 1818 | { |
a2a5a4fa KR |
1819 | /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */ |
1820 | if (temp <= bfd_get_gp_size (stdoutput)) | |
1821 | { | |
1822 | bss_seg = subseg_new (".sbss", 1); | |
1823 | seg_info (bss_seg)->bss = 1; | |
b95bee13 ILT |
1824 | #ifdef BFD_ASSEMBLER |
1825 | if (! bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC)) | |
1826 | as_warn ("error setting flags for \".sbss\": %s", | |
1827 | bfd_errmsg (bfd_get_error ())); | |
1828 | #endif | |
a2a5a4fa | 1829 | } |
46b81190 | 1830 | } |
9a7d824a | 1831 | #endif |
ede7bc1c SC |
1832 | if (!needs_align) |
1833 | { | |
1834 | /* FIXME. This needs to be machine independent. */ | |
9d90491e ILT |
1835 | if (temp >= 8) |
1836 | align = 3; | |
1837 | else if (temp >= 4) | |
ede7bc1c SC |
1838 | align = 2; |
1839 | else if (temp >= 2) | |
1840 | align = 1; | |
1841 | else | |
c71a604a | 1842 | align = 0; |
ede7bc1c SC |
1843 | |
1844 | record_alignment(bss_seg, align); | |
1845 | } | |
9a7d824a | 1846 | |
6efd877d KR |
1847 | if (needs_align) |
1848 | { | |
1849 | align = 0; | |
1850 | SKIP_WHITESPACE (); | |
1851 | if (*input_line_pointer != ',') | |
1852 | { | |
1853 | as_bad ("Expected comma after size"); | |
1854 | ignore_rest_of_line (); | |
1855 | return; | |
1856 | } | |
1857 | input_line_pointer++; | |
1858 | SKIP_WHITESPACE (); | |
1859 | if (*input_line_pointer == '\n') | |
1860 | { | |
1861 | as_bad ("Missing alignment"); | |
1862 | return; | |
1863 | } | |
1864 | align = get_absolute_expression (); | |
1865 | if (align > max_alignment) | |
1866 | { | |
1867 | align = max_alignment; | |
1868 | as_warn ("Alignment too large: %d. assumed.", align); | |
1869 | } | |
1870 | else if (align < 0) | |
1871 | { | |
1872 | align = 0; | |
1873 | as_warn ("Alignment negative. 0 assumed."); | |
1874 | } | |
9a7d824a | 1875 | record_alignment (bss_seg, align); |
6efd877d | 1876 | } /* if needs align */ |
4075afe1 KR |
1877 | else |
1878 | { | |
1879 | /* Assume some objects may require alignment on some systems. */ | |
1880 | #ifdef TC_ALPHA | |
1881 | if (temp > 1) | |
1882 | { | |
1883 | align = ffs (temp) - 1; | |
1884 | if (temp % (1 << align)) | |
1885 | abort (); | |
1886 | } | |
1887 | #endif | |
1888 | } | |
f8701a3f | 1889 | |
6efd877d KR |
1890 | *p = 0; |
1891 | symbolP = symbol_find_or_make (name); | |
1892 | *p = c; | |
f8701a3f | 1893 | |
6efd877d | 1894 | if ( |
fecd2382 | 1895 | #if defined(OBJ_AOUT) | defined(OBJ_BOUT) |
6efd877d KR |
1896 | S_GET_OTHER (symbolP) == 0 && |
1897 | S_GET_DESC (symbolP) == 0 && | |
fecd2382 | 1898 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
9a7d824a | 1899 | (S_GET_SEGMENT (symbolP) == bss_seg |
6efd877d KR |
1900 | || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0))) |
1901 | { | |
604633ae | 1902 | char *pfrag; |
85825401 | 1903 | |
9a7d824a | 1904 | subseg_set (bss_seg, 1); |
85825401 ILT |
1905 | |
1906 | if (align) | |
1907 | frag_align (align, 0); | |
1908 | /* detach from old frag */ | |
9a7d824a | 1909 | if (S_GET_SEGMENT (symbolP) == bss_seg) |
85825401 ILT |
1910 | symbolP->sy_frag->fr_symbol = NULL; |
1911 | ||
1912 | symbolP->sy_frag = frag_now; | |
604633ae ILT |
1913 | pfrag = frag_var (rs_org, 1, 1, (relax_substateT)0, symbolP, |
1914 | temp, (char *)0); | |
1915 | *pfrag = 0; | |
f8701a3f | 1916 | |
9a7d824a | 1917 | S_SET_SEGMENT (symbolP, bss_seg); |
85825401 | 1918 | |
fecd2382 | 1919 | #ifdef OBJ_COFF |
6efd877d | 1920 | /* The symbol may already have been created with a preceding |
c8863a58 KR |
1921 | ".globl" directive -- be careful not to step on storage class |
1922 | in that case. Otherwise, set it to static. */ | |
6efd877d KR |
1923 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) |
1924 | { | |
1925 | S_SET_STORAGE_CLASS (symbolP, C_STAT); | |
fecd2382 | 1926 | } |
6efd877d | 1927 | #endif /* OBJ_COFF */ |
cef72a92 ILT |
1928 | |
1929 | #ifdef S_SET_SIZE | |
1930 | S_SET_SIZE (symbolP, temp); | |
1931 | #endif | |
6efd877d KR |
1932 | } |
1933 | else | |
6ef37255 KR |
1934 | as_bad ("Ignoring attempt to re-define symbol `%s'.", |
1935 | S_GET_NAME (symbolP)); | |
f8701a3f | 1936 | |
9a7d824a | 1937 | subseg_set (current_seg, current_subseg); |
9a7d824a ILT |
1938 | |
1939 | demand_empty_rest_of_line (); | |
6efd877d | 1940 | } /* s_lcomm() */ |
fecd2382 | 1941 | |
6efd877d | 1942 | void |
604633ae ILT |
1943 | s_lsym (ignore) |
1944 | int ignore; | |
6efd877d KR |
1945 | { |
1946 | register char *name; | |
1947 | register char c; | |
1948 | register char *p; | |
6efd877d KR |
1949 | expressionS exp; |
1950 | register symbolS *symbolP; | |
1951 | ||
1952 | /* we permit ANY defined expression: BSD4.2 demands constants */ | |
1953 | name = input_line_pointer; | |
1954 | c = get_symbol_end (); | |
1955 | p = input_line_pointer; | |
1956 | *p = c; | |
1957 | SKIP_WHITESPACE (); | |
1958 | if (*input_line_pointer != ',') | |
1959 | { | |
1960 | *p = 0; | |
1961 | as_bad ("Expected comma after name \"%s\"", name); | |
1962 | *p = c; | |
1963 | ignore_rest_of_line (); | |
1964 | return; | |
1965 | } | |
1966 | input_line_pointer++; | |
b31f2abb KR |
1967 | expression (&exp); |
1968 | if (exp.X_op != O_constant | |
1969 | && exp.X_op != O_register) | |
1970 | { | |
1971 | as_bad ("bad expression"); | |
1972 | ignore_rest_of_line (); | |
1973 | return; | |
1974 | } | |
6efd877d KR |
1975 | *p = 0; |
1976 | symbolP = symbol_find_or_make (name); | |
f8701a3f | 1977 | |
c8863a58 KR |
1978 | /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 && |
1979 | symbolP->sy_desc == 0) out of this test because coff doesn't have | |
1980 | those fields, and I can't see when they'd ever be tripped. I | |
1981 | don't think I understand why they were here so I may have | |
1982 | introduced a bug. As recently as 1.37 didn't have this test | |
1983 | anyway. xoxorich. */ | |
f8701a3f | 1984 | |
9471a360 | 1985 | if (S_GET_SEGMENT (symbolP) == undefined_section |
6efd877d KR |
1986 | && S_GET_VALUE (symbolP) == 0) |
1987 | { | |
c8863a58 KR |
1988 | /* The name might be an undefined .global symbol; be sure to |
1989 | keep the "external" bit. */ | |
b31f2abb KR |
1990 | S_SET_SEGMENT (symbolP, |
1991 | (exp.X_op == O_constant | |
1992 | ? absolute_section | |
1993 | : reg_section)); | |
1994 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); | |
6efd877d KR |
1995 | } |
1996 | else | |
1997 | { | |
1998 | as_bad ("Symbol %s already defined", name); | |
1999 | } | |
2000 | *p = c; | |
2001 | demand_empty_rest_of_line (); | |
2002 | } /* s_lsym() */ | |
2003 | ||
7e047ac2 ILT |
2004 | /* Read a line into an sb. */ |
2005 | ||
2006 | static int | |
2007 | get_line_sb (line) | |
2008 | sb *line; | |
2009 | { | |
adeab39b MM |
2010 | if (input_line_pointer[-1] == '\n') |
2011 | bump_line_counters (); | |
2012 | ||
7e047ac2 ILT |
2013 | if (input_line_pointer >= buffer_limit) |
2014 | { | |
2015 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2016 | if (buffer_limit == 0) | |
2017 | return 0; | |
2018 | } | |
2019 | ||
2020 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
2021 | sb_add_char (line, *input_line_pointer++); | |
42ac8fa8 ILT |
2022 | while (input_line_pointer < buffer_limit |
2023 | && is_end_of_line[(unsigned char) *input_line_pointer]) | |
7e047ac2 | 2024 | { |
adeab39b MM |
2025 | if (input_line_pointer[-1] == '\n') |
2026 | bump_line_counters (); | |
7e047ac2 ILT |
2027 | ++input_line_pointer; |
2028 | } | |
2029 | return 1; | |
2030 | } | |
2031 | ||
2032 | /* Define a macro. This is an interface to macro.c, which is shared | |
2033 | between gas and gasp. */ | |
2034 | ||
2035 | void | |
2036 | s_macro (ignore) | |
2037 | int ignore; | |
2038 | { | |
2039 | char *file; | |
2040 | unsigned int line; | |
2041 | sb s; | |
2042 | sb label; | |
2043 | const char *err; | |
2044 | ||
2045 | as_where (&file, &line); | |
2046 | ||
2047 | sb_new (&s); | |
2048 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) | |
2049 | sb_add_char (&s, *input_line_pointer++); | |
2050 | ||
2051 | sb_new (&label); | |
2052 | if (line_label != NULL) | |
2053 | sb_add_string (&label, S_GET_NAME (line_label)); | |
2054 | ||
7e047ac2 ILT |
2055 | err = define_macro (0, &s, &label, get_line_sb); |
2056 | if (err != NULL) | |
2057 | as_bad_where (file, line, "%s", err); | |
2058 | else | |
2059 | { | |
2060 | if (line_label != NULL) | |
2061 | { | |
2062 | S_SET_SEGMENT (line_label, undefined_section); | |
2063 | S_SET_VALUE (line_label, 0); | |
2064 | line_label->sy_frag = &zero_address_frag; | |
2065 | } | |
2066 | } | |
2067 | ||
2068 | sb_kill (&s); | |
2069 | } | |
2070 | ||
2071 | /* Handle the .mexit pseudo-op, which immediately exits a macro | |
2072 | expansion. */ | |
2073 | ||
2074 | void | |
2075 | s_mexit (ignore) | |
2076 | int ignore; | |
2077 | { | |
2078 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2079 | } | |
2080 | ||
20710f1c ILT |
2081 | /* Switch in and out of MRI mode. */ |
2082 | ||
2083 | void | |
2084 | s_mri (ignore) | |
2085 | int ignore; | |
2086 | { | |
2087 | int on, old_flag; | |
2088 | ||
2089 | on = get_absolute_expression (); | |
2090 | old_flag = flag_mri; | |
2091 | if (on != 0) | |
2092 | { | |
2093 | flag_mri = 1; | |
2094 | #ifdef TC_M68K | |
2095 | flag_m68k_mri = 1; | |
2096 | #endif | |
2097 | } | |
2098 | else | |
2099 | { | |
2100 | flag_mri = 0; | |
2101 | flag_m68k_mri = 0; | |
2102 | } | |
2103 | ||
2104 | #ifdef MRI_MODE_CHANGE | |
2105 | if (on != old_flag) | |
2106 | MRI_MODE_CHANGE (on); | |
2107 | #endif | |
2108 | ||
2109 | demand_empty_rest_of_line (); | |
2110 | } | |
2111 | ||
e28c40d7 ILT |
2112 | /* Handle changing the location counter. */ |
2113 | ||
2114 | static void | |
2115 | do_org (segment, exp, fill) | |
2116 | segT segment; | |
2117 | expressionS *exp; | |
2118 | int fill; | |
2119 | { | |
2120 | if (segment != now_seg && segment != absolute_section) | |
2121 | as_bad ("invalid segment \"%s\"; segment \"%s\" assumed", | |
2122 | segment_name (segment), segment_name (now_seg)); | |
2123 | ||
2124 | if (now_seg == absolute_section) | |
2125 | { | |
2126 | if (fill != 0) | |
2127 | as_warn ("ignoring fill value in absolute section"); | |
2128 | if (exp->X_op != O_constant) | |
2129 | { | |
2130 | as_bad ("only constant offsets supported in absolute section"); | |
2131 | exp->X_add_number = 0; | |
2132 | } | |
2133 | abs_section_offset = exp->X_add_number; | |
2134 | } | |
2135 | else | |
2136 | { | |
2137 | char *p; | |
2138 | ||
2139 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp->X_add_symbol, | |
2140 | exp->X_add_number, (char *) NULL); | |
2141 | *p = fill; | |
2142 | } | |
2143 | } | |
2144 | ||
6efd877d | 2145 | void |
604633ae ILT |
2146 | s_org (ignore) |
2147 | int ignore; | |
6efd877d KR |
2148 | { |
2149 | register segT segment; | |
2150 | expressionS exp; | |
2151 | register long temp_fill; | |
e28c40d7 | 2152 | |
42ac8fa8 ILT |
2153 | /* The m68k MRI assembler has a different meaning for .org. It |
2154 | means to create an absolute section at a given address. We can't | |
2155 | support that--use a linker script instead. */ | |
cef72a92 | 2156 | if (flag_m68k_mri) |
69e077f3 ILT |
2157 | { |
2158 | as_bad ("MRI style ORG pseudo-op not supported"); | |
2159 | ignore_rest_of_line (); | |
2160 | return; | |
2161 | } | |
2162 | ||
9471a360 KR |
2163 | /* Don't believe the documentation of BSD 4.2 AS. There is no such |
2164 | thing as a sub-segment-relative origin. Any absolute origin is | |
2165 | given a warning, then assumed to be segment-relative. Any | |
2166 | segmented origin expression ("foo+42") had better be in the right | |
2167 | segment or the .org is ignored. | |
2168 | ||
2169 | BSD 4.2 AS warns if you try to .org backwards. We cannot because | |
2170 | we never know sub-segment sizes when we are reading code. BSD | |
2171 | will crash trying to emit negative numbers of filler bytes in | |
2172 | certain .orgs. We don't crash, but see as-write for that code. | |
2173 | ||
2174 | Don't make frag if need_pass_2==1. */ | |
6efd877d KR |
2175 | segment = get_known_segmented_expression (&exp); |
2176 | if (*input_line_pointer == ',') | |
2177 | { | |
2178 | input_line_pointer++; | |
2179 | temp_fill = get_absolute_expression (); | |
2180 | } | |
2181 | else | |
2182 | temp_fill = 0; | |
e28c40d7 | 2183 | |
6efd877d | 2184 | if (!need_pass_2) |
e28c40d7 ILT |
2185 | do_org (segment, &exp, temp_fill); |
2186 | ||
6efd877d KR |
2187 | demand_empty_rest_of_line (); |
2188 | } /* s_org() */ | |
2189 | ||
e14994d9 ILT |
2190 | /* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be |
2191 | called by the obj-format routine which handles section changing | |
2192 | when in MRI mode. It will create a new section, and return it. It | |
c7a89bde ILT |
2193 | will set *TYPE to the section type: one of 'C' (code), 'D' (data), |
2194 | 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the | |
2195 | flags will be set in the section. */ | |
e14994d9 ILT |
2196 | |
2197 | void | |
2198 | s_mri_sect (type) | |
2199 | char *type; | |
2200 | { | |
42ac8fa8 ILT |
2201 | #ifdef TC_M68K |
2202 | ||
e14994d9 ILT |
2203 | char *name; |
2204 | char c; | |
2205 | segT seg; | |
2206 | ||
2207 | SKIP_WHITESPACE (); | |
2208 | ||
2209 | name = input_line_pointer; | |
2210 | if (! isdigit ((unsigned char) *name)) | |
2211 | c = get_symbol_end (); | |
2212 | else | |
2213 | { | |
2214 | do | |
2215 | { | |
2216 | ++input_line_pointer; | |
2217 | } | |
2218 | while (isdigit ((unsigned char) *input_line_pointer)); | |
2219 | c = *input_line_pointer; | |
2220 | *input_line_pointer = '\0'; | |
2221 | } | |
2222 | ||
c7a89bde | 2223 | name = xstrdup (name); |
e14994d9 ILT |
2224 | |
2225 | *input_line_pointer = c; | |
2226 | ||
2227 | seg = subseg_new (name, 0); | |
2228 | ||
2229 | if (*input_line_pointer == ',') | |
2230 | { | |
2231 | int align; | |
2232 | ||
2233 | ++input_line_pointer; | |
2234 | align = get_absolute_expression (); | |
2235 | record_alignment (seg, align); | |
2236 | } | |
2237 | ||
c7a89bde | 2238 | *type = 'C'; |
e14994d9 ILT |
2239 | if (*input_line_pointer == ',') |
2240 | { | |
2241 | c = *++input_line_pointer; | |
2242 | c = toupper ((unsigned char) c); | |
2243 | if (c == 'C' || c == 'D' || c == 'M' || c == 'R') | |
2244 | *type = c; | |
2245 | else | |
2246 | as_bad ("unrecognized section type"); | |
2247 | ++input_line_pointer; | |
2248 | ||
2249 | #ifdef BFD_ASSEMBLER | |
2250 | { | |
2251 | flagword flags; | |
2252 | ||
2253 | flags = SEC_NO_FLAGS; | |
ca232972 | 2254 | if (*type == 'C') |
c7a89bde ILT |
2255 | flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE; |
2256 | else if (*type == 'D' || *type == 'M') | |
2257 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA; | |
ca232972 | 2258 | else if (*type == 'R') |
c7a89bde | 2259 | flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM; |
e14994d9 ILT |
2260 | if (flags != SEC_NO_FLAGS) |
2261 | { | |
2262 | if (! bfd_set_section_flags (stdoutput, seg, flags)) | |
2263 | as_warn ("error setting flags for \"%s\": %s", | |
ca232972 | 2264 | bfd_section_name (stdoutput, seg), |
e14994d9 ILT |
2265 | bfd_errmsg (bfd_get_error ())); |
2266 | } | |
2267 | } | |
2268 | #endif | |
2269 | } | |
2270 | ||
2271 | /* Ignore the HP type. */ | |
2272 | if (*input_line_pointer == ',') | |
2273 | input_line_pointer += 2; | |
2274 | ||
2275 | demand_empty_rest_of_line (); | |
42ac8fa8 ILT |
2276 | |
2277 | #else /* ! TC_M68K */ | |
2278 | #ifdef TC_I960 | |
2279 | ||
2280 | char *name; | |
2281 | char c; | |
2282 | segT seg; | |
2283 | ||
2284 | SKIP_WHITESPACE (); | |
2285 | ||
2286 | name = input_line_pointer; | |
2287 | c = get_symbol_end (); | |
2288 | ||
c7a89bde | 2289 | name = xstrdup (name); |
42ac8fa8 ILT |
2290 | |
2291 | *input_line_pointer = c; | |
2292 | ||
2293 | seg = subseg_new (name, 0); | |
2294 | ||
2295 | if (*input_line_pointer != ',') | |
2296 | *type = 'C'; | |
2297 | else | |
2298 | { | |
2299 | char *sectype; | |
2300 | ||
2301 | ++input_line_pointer; | |
2302 | SKIP_WHITESPACE (); | |
2303 | sectype = input_line_pointer; | |
2304 | c = get_symbol_end (); | |
2305 | if (*sectype == '\0') | |
2306 | *type = 'C'; | |
2307 | else if (strcasecmp (sectype, "text") == 0) | |
2308 | *type = 'C'; | |
2309 | else if (strcasecmp (sectype, "data") == 0) | |
2310 | *type = 'D'; | |
2311 | else if (strcasecmp (sectype, "romdata") == 0) | |
2312 | *type = 'R'; | |
2313 | else | |
2314 | as_warn ("unrecognized section type `%s'", sectype); | |
2315 | *input_line_pointer = c; | |
2316 | } | |
2317 | ||
2318 | if (*input_line_pointer == ',') | |
2319 | { | |
2320 | char *seccmd; | |
2321 | ||
2322 | ++input_line_pointer; | |
2323 | SKIP_WHITESPACE (); | |
2324 | seccmd = input_line_pointer; | |
2325 | c = get_symbol_end (); | |
2326 | if (strcasecmp (seccmd, "absolute") == 0) | |
2327 | { | |
2328 | as_bad ("absolute sections are not supported"); | |
2329 | *input_line_pointer = c; | |
2330 | ignore_rest_of_line (); | |
2331 | return; | |
2332 | } | |
2333 | else if (strcasecmp (seccmd, "align") == 0) | |
2334 | { | |
2335 | int align; | |
2336 | ||
2337 | *input_line_pointer = c; | |
2338 | align = get_absolute_expression (); | |
2339 | record_alignment (seg, align); | |
2340 | } | |
2341 | else | |
2342 | { | |
2343 | as_warn ("unrecognized section command `%s'", seccmd); | |
2344 | *input_line_pointer = c; | |
2345 | } | |
2346 | } | |
2347 | ||
2348 | demand_empty_rest_of_line (); | |
2349 | ||
2350 | #else /* ! TC_I960 */ | |
2351 | /* The MRI assembler seems to use different forms of .sect for | |
2352 | different targets. */ | |
2353 | abort (); | |
2354 | #endif /* ! TC_I960 */ | |
2355 | #endif /* ! TC_M68K */ | |
2356 | } | |
2357 | ||
2358 | /* Handle the .print pseudo-op. */ | |
2359 | ||
2360 | void | |
2361 | s_print (ignore) | |
2362 | int ignore; | |
2363 | { | |
2364 | char *s; | |
2365 | int len; | |
2366 | ||
2367 | s = demand_copy_C_string (&len); | |
2368 | printf ("%s\n", s); | |
2369 | demand_empty_rest_of_line (); | |
2370 | } | |
2371 | ||
2372 | /* Handle the .purgem pseudo-op. */ | |
2373 | ||
2374 | void | |
2375 | s_purgem (ignore) | |
2376 | int ignore; | |
2377 | { | |
2378 | if (is_it_end_of_statement ()) | |
2379 | { | |
2380 | demand_empty_rest_of_line (); | |
2381 | return; | |
2382 | } | |
2383 | ||
2384 | do | |
2385 | { | |
2386 | char *name; | |
2387 | char c; | |
2388 | ||
2389 | SKIP_WHITESPACE (); | |
2390 | name = input_line_pointer; | |
2391 | c = get_symbol_end (); | |
2392 | delete_macro (name); | |
2393 | *input_line_pointer = c; | |
2394 | SKIP_WHITESPACE (); | |
2395 | } | |
2396 | while (*input_line_pointer++ == ','); | |
2397 | ||
2398 | --input_line_pointer; | |
2399 | demand_empty_rest_of_line (); | |
e14994d9 ILT |
2400 | } |
2401 | ||
7e047ac2 ILT |
2402 | /* Handle the .rept pseudo-op. */ |
2403 | ||
2404 | void | |
2405 | s_rept (ignore) | |
2406 | int ignore; | |
2407 | { | |
2408 | int count; | |
2409 | sb one; | |
2410 | sb many; | |
2411 | ||
2412 | count = get_absolute_expression (); | |
2413 | ||
2414 | sb_new (&one); | |
2415 | if (! buffer_and_nest ("REPT", "ENDR", &one, get_line_sb)) | |
2416 | { | |
2417 | as_bad ("rept without endr"); | |
2418 | return; | |
2419 | } | |
2420 | ||
2421 | sb_new (&many); | |
2422 | while (count-- > 0) | |
2423 | sb_add_sb (&many, &one); | |
2424 | ||
2425 | sb_kill (&one); | |
2426 | ||
2427 | input_scrub_include_sb (&many, input_line_pointer); | |
2428 | sb_kill (&many); | |
2429 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
2430 | } | |
2431 | ||
6efd877d | 2432 | void |
604633ae ILT |
2433 | s_set (ignore) |
2434 | int ignore; | |
6efd877d KR |
2435 | { |
2436 | register char *name; | |
2437 | register char delim; | |
2438 | register char *end_name; | |
2439 | register symbolS *symbolP; | |
2440 | ||
2441 | /* | |
c8863a58 KR |
2442 | * Especial apologies for the random logic: |
2443 | * this just grew, and could be parsed much more simply! | |
2444 | * Dean in haste. | |
2445 | */ | |
6efd877d KR |
2446 | name = input_line_pointer; |
2447 | delim = get_symbol_end (); | |
2448 | end_name = input_line_pointer; | |
2449 | *end_name = delim; | |
2450 | SKIP_WHITESPACE (); | |
f8701a3f | 2451 | |
6efd877d KR |
2452 | if (*input_line_pointer != ',') |
2453 | { | |
2454 | *end_name = 0; | |
2455 | as_bad ("Expected comma after name \"%s\"", name); | |
2456 | *end_name = delim; | |
2457 | ignore_rest_of_line (); | |
2458 | return; | |
2459 | } | |
2460 | ||
2461 | input_line_pointer++; | |
2462 | *end_name = 0; | |
2463 | ||
2464 | if (name[0] == '.' && name[1] == '\0') | |
2465 | { | |
2466 | /* Turn '. = mumble' into a .org mumble */ | |
2467 | register segT segment; | |
2468 | expressionS exp; | |
6efd877d KR |
2469 | |
2470 | segment = get_known_segmented_expression (&exp); | |
f8701a3f | 2471 | |
6efd877d | 2472 | if (!need_pass_2) |
e28c40d7 | 2473 | do_org (segment, &exp, 0); |
6efd877d KR |
2474 | |
2475 | *end_name = delim; | |
2476 | return; | |
2477 | } | |
2478 | ||
2479 | if ((symbolP = symbol_find (name)) == NULL | |
2480 | && (symbolP = md_undefined_symbol (name)) == NULL) | |
2481 | { | |
9471a360 | 2482 | symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag); |
fecd2382 | 2483 | #ifdef OBJ_COFF |
6efd877d KR |
2484 | /* "set" symbols are local unless otherwise specified. */ |
2485 | SF_SET_LOCAL (symbolP); | |
fecd2382 | 2486 | #endif /* OBJ_COFF */ |
f8701a3f | 2487 | |
6efd877d | 2488 | } /* make a new symbol */ |
f8701a3f | 2489 | |
6efd877d | 2490 | symbol_table_insert (symbolP); |
f8701a3f | 2491 | |
6efd877d KR |
2492 | *end_name = delim; |
2493 | pseudo_set (symbolP); | |
2494 | demand_empty_rest_of_line (); | |
2495 | } /* s_set() */ | |
fecd2382 | 2496 | |
6efd877d KR |
2497 | void |
2498 | s_space (mult) | |
2499 | int mult; | |
b53ccaac | 2500 | { |
cd3b81bd | 2501 | expressionS exp; |
adeab39b | 2502 | expressionS val; |
cd3b81bd | 2503 | char *p = 0; |
3dce804d ILT |
2504 | char *stop = NULL; |
2505 | char stopc; | |
6efd877d | 2506 | |
a2a5a4fa KR |
2507 | #ifdef md_flush_pending_output |
2508 | md_flush_pending_output (); | |
2509 | #endif | |
2510 | ||
3dce804d | 2511 | if (flag_mri) |
18c9057f | 2512 | stop = mri_comment_field (&stopc); |
3dce804d | 2513 | |
cd3b81bd | 2514 | expression (&exp); |
cd3b81bd | 2515 | |
adeab39b MM |
2516 | SKIP_WHITESPACE (); |
2517 | if (*input_line_pointer == ',') | |
2518 | { | |
2519 | ++input_line_pointer; | |
2520 | expression (&val); | |
2521 | } | |
2522 | else | |
2523 | { | |
2524 | val.X_op = O_constant; | |
2525 | val.X_add_number = 0; | |
2526 | } | |
cd3b81bd | 2527 | |
adeab39b MM |
2528 | if (val.X_op != O_constant |
2529 | || val.X_add_number < - 0x80 | |
2530 | || val.X_add_number > 0xff | |
2531 | || (mult != 0 && mult != 1 && val.X_add_number != 0)) | |
2532 | { | |
2533 | if (exp.X_op != O_constant) | |
2534 | as_bad ("Unsupported variable size or fill value"); | |
2535 | else | |
e28c40d7 | 2536 | { |
adeab39b | 2537 | offsetT i; |
e28c40d7 | 2538 | |
adeab39b MM |
2539 | if (mult == 0) |
2540 | mult = 1; | |
2541 | for (i = 0; i < exp.X_add_number; i++) | |
2542 | emit_expr (&val, mult); | |
1356d77d | 2543 | } |
6efd877d KR |
2544 | } |
2545 | else | |
2546 | { | |
adeab39b | 2547 | if (exp.X_op == O_constant) |
e28c40d7 | 2548 | { |
adeab39b MM |
2549 | long repeat; |
2550 | ||
2551 | repeat = exp.X_add_number; | |
2552 | if (mult) | |
2553 | repeat *= mult; | |
2554 | if (repeat <= 0) | |
2555 | { | |
2556 | if (! flag_mri || repeat < 0) | |
2557 | as_warn (".space repeat count is %s, ignored", | |
2558 | repeat ? "negative" : "zero"); | |
2559 | goto getout; | |
2560 | } | |
2561 | ||
2562 | /* If we are in the absolute section, just bump the offset. */ | |
2563 | if (now_seg == absolute_section) | |
2564 | { | |
2565 | abs_section_offset += repeat; | |
2566 | goto getout; | |
2567 | } | |
2568 | ||
2569 | /* If we are secretly in an MRI common section, then | |
2570 | creating space just increases the size of the common | |
2571 | symbol. */ | |
2572 | if (mri_common_symbol != NULL) | |
2573 | { | |
2574 | S_SET_VALUE (mri_common_symbol, | |
2575 | S_GET_VALUE (mri_common_symbol) + repeat); | |
2576 | goto getout; | |
2577 | } | |
2578 | ||
2579 | if (!need_pass_2) | |
2580 | p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0, | |
2581 | repeat, (char *) 0); | |
e28c40d7 | 2582 | } |
adeab39b | 2583 | else |
1356d77d | 2584 | { |
adeab39b MM |
2585 | if (now_seg == absolute_section) |
2586 | { | |
2587 | as_bad ("space allocation too complex in absolute section"); | |
2588 | subseg_set (text_section, 0); | |
2589 | } | |
2590 | if (mri_common_symbol != NULL) | |
2591 | { | |
2592 | as_bad ("space allocation too complex in common section"); | |
2593 | mri_common_symbol = NULL; | |
2594 | } | |
2595 | if (!need_pass_2) | |
2596 | p = frag_var (rs_space, 1, 1, (relax_substateT) 0, | |
2597 | make_expr_symbol (&exp), 0L, (char *) 0); | |
1356d77d | 2598 | } |
adeab39b MM |
2599 | |
2600 | if (p) | |
2601 | *p = val.X_add_number; | |
6efd877d | 2602 | } |
3dce804d ILT |
2603 | |
2604 | getout: | |
2605 | if (flag_mri) | |
18c9057f | 2606 | mri_comment_end (stop, stopc); |
3dce804d | 2607 | |
6efd877d | 2608 | demand_empty_rest_of_line (); |
cd3b81bd | 2609 | } |
fecd2382 | 2610 | |
e28c40d7 ILT |
2611 | /* This is like s_space, but the value is a floating point number with |
2612 | the given precision. This is for the MRI dcb.s pseudo-op and | |
2613 | friends. */ | |
2614 | ||
2615 | void | |
2616 | s_float_space (float_type) | |
2617 | int float_type; | |
2618 | { | |
2619 | offsetT count; | |
2620 | int flen; | |
2621 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
18c9057f ILT |
2622 | char *stop = NULL; |
2623 | char stopc; | |
2624 | ||
2625 | if (flag_mri) | |
2626 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
2627 | |
2628 | count = get_absolute_expression (); | |
2629 | ||
2630 | SKIP_WHITESPACE (); | |
2631 | if (*input_line_pointer != ',') | |
2632 | { | |
2633 | as_bad ("missing value"); | |
18c9057f ILT |
2634 | if (flag_mri) |
2635 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2636 | ignore_rest_of_line (); |
2637 | return; | |
2638 | } | |
2639 | ||
2640 | ++input_line_pointer; | |
2641 | ||
2642 | SKIP_WHITESPACE (); | |
2643 | ||
2644 | /* Skip any 0{letter} that may be present. Don't even check if the | |
2645 | * letter is legal. */ | |
2646 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) | |
2647 | input_line_pointer += 2; | |
2648 | ||
2649 | /* Accept :xxxx, where the x's are hex digits, for a floating point | |
2650 | with the exact digits specified. */ | |
2651 | if (input_line_pointer[0] == ':') | |
2652 | { | |
2653 | flen = hex_float (float_type, temp); | |
2654 | if (flen < 0) | |
2655 | { | |
18c9057f ILT |
2656 | if (flag_mri) |
2657 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2658 | ignore_rest_of_line (); |
2659 | return; | |
2660 | } | |
2661 | } | |
2662 | else | |
2663 | { | |
2664 | char *err; | |
2665 | ||
2666 | err = md_atof (float_type, temp, &flen); | |
2667 | know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
2668 | know (flen > 0); | |
2669 | if (err) | |
2670 | { | |
2671 | as_bad ("Bad floating literal: %s", err); | |
18c9057f ILT |
2672 | if (flag_mri) |
2673 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2674 | ignore_rest_of_line (); |
2675 | return; | |
2676 | } | |
2677 | } | |
2678 | ||
2679 | while (--count >= 0) | |
2680 | { | |
2681 | char *p; | |
2682 | ||
2683 | p = frag_more (flen); | |
2684 | memcpy (p, temp, (unsigned int) flen); | |
2685 | } | |
2686 | ||
18c9057f ILT |
2687 | if (flag_mri) |
2688 | mri_comment_end (stop, stopc); | |
2689 | ||
e28c40d7 ILT |
2690 | demand_empty_rest_of_line (); |
2691 | } | |
2692 | ||
2693 | /* Handle the .struct pseudo-op, as found in MIPS assemblers. */ | |
2694 | ||
2695 | void | |
2696 | s_struct (ignore) | |
2697 | int ignore; | |
2698 | { | |
18c9057f ILT |
2699 | char *stop = NULL; |
2700 | char stopc; | |
2701 | ||
2702 | if (flag_mri) | |
2703 | stop = mri_comment_field (&stopc); | |
e28c40d7 ILT |
2704 | abs_section_offset = get_absolute_expression (); |
2705 | subseg_set (absolute_section, 0); | |
18c9057f ILT |
2706 | if (flag_mri) |
2707 | mri_comment_end (stop, stopc); | |
e28c40d7 ILT |
2708 | demand_empty_rest_of_line (); |
2709 | } | |
2710 | ||
fecd2382 | 2711 | void |
604633ae ILT |
2712 | s_text (ignore) |
2713 | int ignore; | |
fecd2382 | 2714 | { |
6efd877d | 2715 | register int temp; |
f8701a3f | 2716 | |
6efd877d | 2717 | temp = get_absolute_expression (); |
9471a360 | 2718 | subseg_set (text_section, (subsegT) temp); |
6efd877d | 2719 | demand_empty_rest_of_line (); |
80d80c64 KR |
2720 | #ifdef OBJ_VMS |
2721 | const_flag &= ~IN_DEFAULT_SECTION; | |
2722 | #endif | |
6efd877d | 2723 | } /* s_text() */ |
fecd2382 | 2724 | \f |
6efd877d | 2725 | |
6efd877d KR |
2726 | void |
2727 | demand_empty_rest_of_line () | |
2728 | { | |
2729 | SKIP_WHITESPACE (); | |
58d4951d | 2730 | if (is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
2731 | { |
2732 | input_line_pointer++; | |
2733 | } | |
2734 | else | |
2735 | { | |
2736 | ignore_rest_of_line (); | |
2737 | } | |
2738 | /* Return having already swallowed end-of-line. */ | |
2739 | } /* Return pointing just after end-of-line. */ | |
fecd2382 RP |
2740 | |
2741 | void | |
6efd877d | 2742 | ignore_rest_of_line () /* For suspect lines: gives warning. */ |
fecd2382 | 2743 | { |
58d4951d | 2744 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 2745 | { |
6efd877d KR |
2746 | if (isprint (*input_line_pointer)) |
2747 | as_bad ("Rest of line ignored. First ignored character is `%c'.", | |
f8701a3f SC |
2748 | *input_line_pointer); |
2749 | else | |
6efd877d | 2750 | as_bad ("Rest of line ignored. First ignored character valued 0x%x.", |
f8701a3f SC |
2751 | *input_line_pointer); |
2752 | while (input_line_pointer < buffer_limit | |
58d4951d | 2753 | && !is_end_of_line[(unsigned char) *input_line_pointer]) |
f8701a3f | 2754 | { |
6efd877d | 2755 | input_line_pointer++; |
f8701a3f SC |
2756 | } |
2757 | } | |
6efd877d | 2758 | input_line_pointer++; /* Return pointing just after end-of-line. */ |
58d4951d | 2759 | know (is_end_of_line[(unsigned char) input_line_pointer[-1]]); |
fecd2382 RP |
2760 | } |
2761 | ||
2762 | /* | |
2763 | * pseudo_set() | |
2764 | * | |
2765 | * In: Pointer to a symbol. | |
2766 | * Input_line_pointer->expression. | |
2767 | * | |
2768 | * Out: Input_line_pointer->just after any whitespace after expression. | |
2769 | * Tried to set symbol to value of expression. | |
2770 | * Will change symbols type, value, and frag; | |
fecd2382 RP |
2771 | */ |
2772 | void | |
f8701a3f | 2773 | pseudo_set (symbolP) |
6efd877d | 2774 | symbolS *symbolP; |
fecd2382 | 2775 | { |
6efd877d | 2776 | expressionS exp; |
daad3bbf | 2777 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
f8701a3f | 2778 | int ext; |
fecd2382 | 2779 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 2780 | |
6efd877d | 2781 | know (symbolP); /* NULL pointer is logic error. */ |
daad3bbf | 2782 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
6efd877d | 2783 | ext = S_IS_EXTERNAL (symbolP); |
fecd2382 | 2784 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
f8701a3f | 2785 | |
5ac34ac3 | 2786 | (void) expression (&exp); |
f8701a3f | 2787 | |
5ac34ac3 ILT |
2788 | if (exp.X_op == O_illegal) |
2789 | as_bad ("illegal expression; zero assumed"); | |
2790 | else if (exp.X_op == O_absent) | |
2791 | as_bad ("missing expression; zero assumed"); | |
2792 | else if (exp.X_op == O_big) | |
2793 | as_bad ("%s number invalid; zero assumed", | |
2794 | exp.X_add_number > 0 ? "bignum" : "floating point"); | |
2795 | else if (exp.X_op == O_subtract | |
2796 | && (S_GET_SEGMENT (exp.X_add_symbol) | |
2797 | == S_GET_SEGMENT (exp.X_op_symbol)) | |
2798 | && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol)) | |
2799 | && exp.X_add_symbol->sy_frag == exp.X_op_symbol->sy_frag) | |
9471a360 | 2800 | { |
5ac34ac3 ILT |
2801 | exp.X_op = O_constant; |
2802 | exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol) | |
2803 | - S_GET_VALUE (exp.X_op_symbol)); | |
9471a360 | 2804 | } |
5ac34ac3 ILT |
2805 | |
2806 | switch (exp.X_op) | |
9471a360 | 2807 | { |
5ac34ac3 ILT |
2808 | case O_illegal: |
2809 | case O_absent: | |
2810 | case O_big: | |
2811 | exp.X_add_number = 0; | |
2812 | /* Fall through. */ | |
2813 | case O_constant: | |
9471a360 | 2814 | S_SET_SEGMENT (symbolP, absolute_section); |
daad3bbf | 2815 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
2816 | if (ext) |
2817 | S_SET_EXTERNAL (symbolP); | |
6efd877d | 2818 | else |
6efd877d | 2819 | S_CLEAR_EXTERNAL (symbolP); |
fecd2382 | 2820 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
604633ae | 2821 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
6efd877d | 2822 | symbolP->sy_frag = &zero_address_frag; |
5ac34ac3 | 2823 | break; |
f8701a3f | 2824 | |
5ac34ac3 ILT |
2825 | case O_register: |
2826 | S_SET_SEGMENT (symbolP, reg_section); | |
604633ae | 2827 | S_SET_VALUE (symbolP, (valueT) exp.X_add_number); |
5ac34ac3 ILT |
2828 | symbolP->sy_frag = &zero_address_frag; |
2829 | break; | |
2830 | ||
2831 | case O_symbol: | |
ef198870 KR |
2832 | if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section |
2833 | || exp.X_add_number != 0) | |
5ac34ac3 | 2834 | symbolP->sy_value = exp; |
6efd877d KR |
2835 | else |
2836 | { | |
80d80c64 KR |
2837 | symbolS *s = exp.X_add_symbol; |
2838 | ||
2839 | S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s)); | |
daad3bbf | 2840 | #if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER) |
5ac34ac3 ILT |
2841 | if (ext) |
2842 | S_SET_EXTERNAL (symbolP); | |
2843 | else | |
2844 | S_CLEAR_EXTERNAL (symbolP); | |
fecd2382 | 2845 | #endif /* OBJ_AOUT or OBJ_BOUT */ |
5ac34ac3 | 2846 | S_SET_VALUE (symbolP, |
80d80c64 KR |
2847 | exp.X_add_number + S_GET_VALUE (s)); |
2848 | symbolP->sy_frag = s->sy_frag; | |
ef198870 | 2849 | copy_symbol_attributes (symbolP, s); |
5ac34ac3 ILT |
2850 | } |
2851 | break; | |
f8701a3f | 2852 | |
5ac34ac3 ILT |
2853 | default: |
2854 | /* The value is some complex expression. | |
2855 | FIXME: Should we set the segment to anything? */ | |
2856 | symbolP->sy_value = exp; | |
2857 | break; | |
f8701a3f | 2858 | } |
fecd2382 RP |
2859 | } |
2860 | \f | |
2861 | /* | |
2862 | * cons() | |
2863 | * | |
2864 | * CONStruct more frag of .bytes, or .words etc. | |
2865 | * Should need_pass_2 be 1 then emit no frag(s). | |
80aab579 | 2866 | * This understands EXPRESSIONS. |
fecd2382 RP |
2867 | * |
2868 | * Bug (?) | |
2869 | * | |
2870 | * This has a split personality. We use expression() to read the | |
2871 | * value. We can detect if the value won't fit in a byte or word. | |
2872 | * But we can't detect if expression() discarded significant digits | |
2873 | * in the case of a long. Not worth the crocks required to fix it. | |
2874 | */ | |
2875 | ||
40324362 KR |
2876 | /* Select a parser for cons expressions. */ |
2877 | ||
2878 | /* Some targets need to parse the expression in various fancy ways. | |
2879 | You can define TC_PARSE_CONS_EXPRESSION to do whatever you like | |
2880 | (for example, the HPPA does this). Otherwise, you can define | |
2881 | BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or | |
2882 | REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these | |
2883 | are defined, which is the normal case, then only simple expressions | |
2884 | are permitted. */ | |
2885 | ||
1356d77d ILT |
2886 | static void |
2887 | parse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2888 | ||
40324362 KR |
2889 | #ifndef TC_PARSE_CONS_EXPRESSION |
2890 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
2891 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES) | |
2892 | static void | |
2893 | parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2894 | #endif | |
40324362 KR |
2895 | #ifdef REPEAT_CONS_EXPRESSIONS |
2896 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES) | |
2897 | static void | |
2898 | parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes)); | |
2899 | #endif | |
2900 | ||
2901 | /* If we haven't gotten one yet, just call expression. */ | |
2902 | #ifndef TC_PARSE_CONS_EXPRESSION | |
2903 | #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP) | |
2904 | #endif | |
2905 | #endif | |
2906 | ||
6efd877d KR |
2907 | /* worker to do .byte etc statements */ |
2908 | /* clobbers input_line_pointer, checks */ | |
2909 | /* end-of-line. */ | |
86038ada ILT |
2910 | static void |
2911 | cons_worker (nbytes, rva) | |
604633ae | 2912 | register int nbytes; /* 1=.byte, 2=.word, 4=.long */ |
86038ada | 2913 | int rva; |
fecd2382 | 2914 | { |
286cb27a | 2915 | int c; |
6efd877d | 2916 | expressionS exp; |
86038ada | 2917 | char *stop = NULL; |
3dce804d | 2918 | char stopc; |
f8701a3f | 2919 | |
a2a5a4fa KR |
2920 | #ifdef md_flush_pending_output |
2921 | md_flush_pending_output (); | |
2922 | #endif | |
2923 | ||
18c9057f ILT |
2924 | if (flag_mri) |
2925 | stop = mri_comment_field (&stopc); | |
2926 | ||
40324362 | 2927 | if (is_it_end_of_statement ()) |
6efd877d | 2928 | { |
cef72a92 ILT |
2929 | if (flag_mri) |
2930 | mri_comment_end (stop, stopc); | |
40324362 KR |
2931 | demand_empty_rest_of_line (); |
2932 | return; | |
6efd877d | 2933 | } |
40324362 | 2934 | |
286cb27a | 2935 | c = 0; |
40324362 | 2936 | do |
6efd877d | 2937 | { |
cef72a92 | 2938 | if (flag_m68k_mri) |
1356d77d ILT |
2939 | parse_mri_cons (&exp, (unsigned int) nbytes); |
2940 | else | |
2941 | TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes); | |
6594d6b9 KR |
2942 | |
2943 | if (rva) | |
2944 | { | |
2945 | if (exp.X_op == O_symbol) | |
2946 | exp.X_op = O_symbol_rva; | |
2947 | else | |
2948 | as_fatal ("rva without symbol"); | |
2949 | } | |
2950 | emit_expr (&exp, (unsigned int) nbytes); | |
286cb27a | 2951 | ++c; |
40324362 | 2952 | } |
18c9057f | 2953 | while (*input_line_pointer++ == ','); |
40324362 | 2954 | |
286cb27a ILT |
2955 | /* In MRI mode, after an odd number of bytes, we must align to an |
2956 | even word boundary, unless the next instruction is a dc.b, ds.b | |
2957 | or dcb.b. */ | |
2958 | if (flag_mri && nbytes == 1 && (c & 1) != 0) | |
2959 | mri_pending_align = 1; | |
2960 | ||
40324362 | 2961 | input_line_pointer--; /* Put terminator back into stream. */ |
86038ada ILT |
2962 | |
2963 | if (flag_mri) | |
18c9057f | 2964 | mri_comment_end (stop, stopc); |
86038ada | 2965 | |
40324362 | 2966 | demand_empty_rest_of_line (); |
30d3a445 | 2967 | } |
f8701a3f | 2968 | |
86038ada ILT |
2969 | |
2970 | void | |
2971 | cons (size) | |
2972 | int size; | |
2973 | { | |
2974 | cons_worker (size, 0); | |
2975 | } | |
2976 | ||
2977 | void | |
2978 | s_rva (size) | |
2979 | int size; | |
2980 | { | |
2981 | cons_worker (size, 1); | |
2982 | } | |
2983 | ||
2984 | ||
40324362 KR |
2985 | /* Put the contents of expression EXP into the object file using |
2986 | NBYTES bytes. If need_pass_2 is 1, this does nothing. */ | |
f8701a3f | 2987 | |
40324362 KR |
2988 | void |
2989 | emit_expr (exp, nbytes) | |
2990 | expressionS *exp; | |
2991 | unsigned int nbytes; | |
2992 | { | |
5ac34ac3 | 2993 | operatorT op; |
40324362 | 2994 | register char *p; |
80aab579 | 2995 | valueT extra_digit = 0; |
f8701a3f | 2996 | |
40324362 KR |
2997 | /* Don't do anything if we are going to make another pass. */ |
2998 | if (need_pass_2) | |
2999 | return; | |
3000 | ||
5ac34ac3 | 3001 | op = exp->X_op; |
40324362 | 3002 | |
e28c40d7 ILT |
3003 | /* Allow `.word 0' in the absolute section. */ |
3004 | if (now_seg == absolute_section) | |
3005 | { | |
3006 | if (op != O_constant || exp->X_add_number != 0) | |
3007 | as_bad ("attempt to store value in absolute section"); | |
3008 | abs_section_offset += nbytes; | |
3009 | return; | |
3010 | } | |
3011 | ||
80aab579 ILT |
3012 | /* Handle a negative bignum. */ |
3013 | if (op == O_uminus | |
3014 | && exp->X_add_number == 0 | |
3015 | && exp->X_add_symbol->sy_value.X_op == O_big | |
3016 | && exp->X_add_symbol->sy_value.X_add_number > 0) | |
3017 | { | |
3018 | int i; | |
3019 | unsigned long carry; | |
3020 | ||
3021 | exp = &exp->X_add_symbol->sy_value; | |
3022 | ||
3023 | /* Negate the bignum: one's complement each digit and add 1. */ | |
3024 | carry = 1; | |
3025 | for (i = 0; i < exp->X_add_number; i++) | |
3026 | { | |
3027 | unsigned long next; | |
3028 | ||
3029 | next = (((~ (generic_bignum[i] & LITTLENUM_MASK)) | |
3030 | & LITTLENUM_MASK) | |
3031 | + carry); | |
3032 | generic_bignum[i] = next & LITTLENUM_MASK; | |
3033 | carry = next >> LITTLENUM_NUMBER_OF_BITS; | |
3034 | } | |
3035 | ||
3036 | /* We can ignore any carry out, because it will be handled by | |
3037 | extra_digit if it is needed. */ | |
3038 | ||
3039 | extra_digit = (valueT) -1; | |
3040 | op = O_big; | |
3041 | } | |
3042 | ||
5ac34ac3 | 3043 | if (op == O_absent || op == O_illegal) |
6efd877d | 3044 | { |
5ac34ac3 ILT |
3045 | as_warn ("zero assumed for missing expression"); |
3046 | exp->X_add_number = 0; | |
3047 | op = O_constant; | |
6efd877d | 3048 | } |
80aab579 | 3049 | else if (op == O_big && exp->X_add_number <= 0) |
6efd877d | 3050 | { |
80aab579 | 3051 | as_bad ("floating point number invalid; zero assumed"); |
40324362 | 3052 | exp->X_add_number = 0; |
5ac34ac3 | 3053 | op = O_constant; |
40324362 | 3054 | } |
5ac34ac3 | 3055 | else if (op == O_register) |
6efd877d | 3056 | { |
5ac34ac3 ILT |
3057 | as_warn ("register value used as expression"); |
3058 | op = O_constant; | |
40324362 | 3059 | } |
6efd877d | 3060 | |
604633ae | 3061 | p = frag_more ((int) nbytes); |
6efd877d | 3062 | |
40324362 KR |
3063 | #ifndef WORKING_DOT_WORD |
3064 | /* If we have the difference of two symbols in a word, save it on | |
3065 | the broken_words list. See the code in write.c. */ | |
5ac34ac3 | 3066 | if (op == O_subtract && nbytes == 2) |
40324362 KR |
3067 | { |
3068 | struct broken_word *x; | |
3069 | ||
3070 | x = (struct broken_word *) xmalloc (sizeof (struct broken_word)); | |
3071 | x->next_broken_word = broken_words; | |
3072 | broken_words = x; | |
3073 | x->frag = frag_now; | |
3074 | x->word_goes_here = p; | |
3075 | x->dispfrag = 0; | |
3076 | x->add = exp->X_add_symbol; | |
5ac34ac3 | 3077 | x->sub = exp->X_op_symbol; |
40324362 KR |
3078 | x->addnum = exp->X_add_number; |
3079 | x->added = 0; | |
3080 | new_broken_words++; | |
3081 | return; | |
3082 | } | |
f8701a3f | 3083 | #endif |
6efd877d | 3084 | |
80aab579 ILT |
3085 | /* If we have an integer, but the number of bytes is too large to |
3086 | pass to md_number_to_chars, handle it as a bignum. */ | |
3087 | if (op == O_constant && nbytes > sizeof (valueT)) | |
3088 | { | |
3089 | valueT val; | |
3090 | int gencnt; | |
3091 | ||
3092 | if (! exp->X_unsigned && exp->X_add_number < 0) | |
3093 | extra_digit = (valueT) -1; | |
3094 | val = (valueT) exp->X_add_number; | |
3095 | gencnt = 0; | |
3096 | do | |
3097 | { | |
3098 | generic_bignum[gencnt] = val & LITTLENUM_MASK; | |
3099 | val >>= LITTLENUM_NUMBER_OF_BITS; | |
3100 | ++gencnt; | |
3101 | } | |
3102 | while (val != 0); | |
3103 | op = exp->X_op = O_big; | |
3104 | exp->X_add_number = gencnt; | |
3105 | } | |
3106 | ||
5ac34ac3 | 3107 | if (op == O_constant) |
40324362 | 3108 | { |
44ce2f32 DE |
3109 | register valueT get; |
3110 | register valueT use; | |
3111 | register valueT mask; | |
3112 | register valueT unmask; | |
40324362 KR |
3113 | |
3114 | /* JF << of >= number of bits in the object is undefined. In | |
3115 | particular SPARC (Sun 4) has problems */ | |
44ce2f32 | 3116 | if (nbytes >= sizeof (valueT)) |
40324362 KR |
3117 | mask = 0; |
3118 | else | |
d2550c72 | 3119 | mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes); /* Don't store these bits. */ |
6efd877d | 3120 | |
40324362 | 3121 | unmask = ~mask; /* Do store these bits. */ |
6efd877d | 3122 | |
40324362 KR |
3123 | #ifdef NEVER |
3124 | "Do this mod if you want every overflow check to assume SIGNED 2's complement data."; | |
3125 | mask = ~(unmask >> 1); /* Includes sign bit now. */ | |
3126 | #endif | |
6efd877d | 3127 | |
40324362 KR |
3128 | get = exp->X_add_number; |
3129 | use = get & unmask; | |
3130 | if ((get & mask) != 0 && (get & mask) != mask) | |
3131 | { /* Leading bits contain both 0s & 1s. */ | |
58d4951d | 3132 | as_warn ("Value 0x%lx truncated to 0x%lx.", get, use); |
40324362 | 3133 | } |
604633ae | 3134 | /* put bytes in right order. */ |
44ce2f32 | 3135 | md_number_to_chars (p, use, (int) nbytes); |
40324362 | 3136 | } |
80aab579 ILT |
3137 | else if (op == O_big) |
3138 | { | |
3139 | int size; | |
3140 | LITTLENUM_TYPE *nums; | |
3141 | ||
3142 | know (nbytes % CHARS_PER_LITTLENUM == 0); | |
3143 | ||
3144 | size = exp->X_add_number * CHARS_PER_LITTLENUM; | |
3145 | if (nbytes < size) | |
3146 | { | |
3147 | as_warn ("Bignum truncated to %d bytes", nbytes); | |
3148 | size = nbytes; | |
3149 | } | |
3150 | ||
3151 | if (target_big_endian) | |
3152 | { | |
3153 | while (nbytes > size) | |
3154 | { | |
3155 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3156 | nbytes -= CHARS_PER_LITTLENUM; | |
3157 | p += CHARS_PER_LITTLENUM; | |
3158 | } | |
3159 | ||
3160 | nums = generic_bignum + size / CHARS_PER_LITTLENUM; | |
3161 | while (size > 0) | |
3162 | { | |
3163 | --nums; | |
3164 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3165 | size -= CHARS_PER_LITTLENUM; | |
3166 | p += CHARS_PER_LITTLENUM; | |
3167 | } | |
3168 | } | |
3169 | else | |
3170 | { | |
3171 | nums = generic_bignum; | |
3172 | while (size > 0) | |
3173 | { | |
3174 | md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM); | |
3175 | ++nums; | |
3176 | size -= CHARS_PER_LITTLENUM; | |
3177 | p += CHARS_PER_LITTLENUM; | |
3178 | nbytes -= CHARS_PER_LITTLENUM; | |
3179 | } | |
3180 | ||
3181 | while (nbytes > 0) | |
3182 | { | |
3183 | md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM); | |
3184 | nbytes -= CHARS_PER_LITTLENUM; | |
3185 | p += CHARS_PER_LITTLENUM; | |
3186 | } | |
3187 | } | |
3188 | } | |
40324362 KR |
3189 | else |
3190 | { | |
1fbfe108 | 3191 | memset (p, 0, nbytes); |
6efd877d | 3192 | |
40324362 KR |
3193 | /* Now we need to generate a fixS to record the symbol value. |
3194 | This is easy for BFD. For other targets it can be more | |
3195 | complex. For very complex cases (currently, the HPPA and | |
3196 | NS32K), you can define TC_CONS_FIX_NEW to do whatever you | |
3197 | want. For simpler cases, you can define TC_CONS_RELOC to be | |
3198 | the name of the reloc code that should be stored in the fixS. | |
3199 | If neither is defined, the code uses NO_RELOC if it is | |
3200 | defined, and otherwise uses 0. */ | |
6efd877d | 3201 | |
40324362 | 3202 | #ifdef BFD_ASSEMBLER |
4064305e SS |
3203 | #ifdef TC_CONS_FIX_NEW |
3204 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3205 | #else | |
604633ae | 3206 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 3207 | /* @@ Should look at CPU word size. */ |
ba71c54d | 3208 | nbytes == 2 ? BFD_RELOC_16 |
86038ada ILT |
3209 | : nbytes == 8 ? BFD_RELOC_64 |
3210 | : BFD_RELOC_32); | |
4064305e | 3211 | #endif |
40324362 KR |
3212 | #else |
3213 | #ifdef TC_CONS_FIX_NEW | |
3214 | TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp); | |
3215 | #else | |
3216 | /* Figure out which reloc number to use. Use TC_CONS_RELOC if | |
3217 | it is defined, otherwise use NO_RELOC if it is defined, | |
3218 | otherwise use 0. */ | |
3219 | #ifndef TC_CONS_RELOC | |
3220 | #ifdef NO_RELOC | |
3221 | #define TC_CONS_RELOC NO_RELOC | |
3222 | #else | |
3223 | #define TC_CONS_RELOC 0 | |
3224 | #endif | |
3225 | #endif | |
80aab579 | 3226 | fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0, |
5ac34ac3 | 3227 | TC_CONS_RELOC); |
40324362 KR |
3228 | #endif /* TC_CONS_FIX_NEW */ |
3229 | #endif /* BFD_ASSEMBLER */ | |
3230 | } | |
3231 | } | |
3232 | \f | |
3233 | #ifdef BITFIELD_CONS_EXPRESSIONS | |
6efd877d | 3234 | |
40324362 KR |
3235 | /* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as |
3236 | w:x,y:z, where w and y are bitwidths and x and y are values. They | |
3237 | then pack them all together. We do a little better in that we allow | |
3238 | them in words, longs, etc. and we'll pack them in target byte order | |
3239 | for you. | |
6efd877d | 3240 | |
40324362 KR |
3241 | The rules are: pack least significat bit first, if a field doesn't |
3242 | entirely fit, put it in the next unit. Overflowing the bitfield is | |
3243 | explicitly *not* even a warning. The bitwidth should be considered | |
3244 | a "mask". | |
6efd877d | 3245 | |
40324362 KR |
3246 | To use this function the tc-XXX.h file should define |
3247 | BITFIELD_CONS_EXPRESSIONS. */ | |
f8701a3f | 3248 | |
40324362 KR |
3249 | static void |
3250 | parse_bitfield_cons (exp, nbytes) | |
3251 | expressionS *exp; | |
3252 | unsigned int nbytes; | |
3253 | { | |
3254 | unsigned int bits_available = BITS_PER_CHAR * nbytes; | |
3255 | char *hold = input_line_pointer; | |
f8701a3f | 3256 | |
5ac34ac3 | 3257 | (void) expression (exp); |
f8701a3f | 3258 | |
40324362 KR |
3259 | if (*input_line_pointer == ':') |
3260 | { /* bitfields */ | |
3261 | long value = 0; | |
f8701a3f | 3262 | |
40324362 KR |
3263 | for (;;) |
3264 | { | |
3265 | unsigned long width; | |
f8701a3f | 3266 | |
40324362 KR |
3267 | if (*input_line_pointer != ':') |
3268 | { | |
3269 | input_line_pointer = hold; | |
3270 | break; | |
3271 | } /* next piece is not a bitfield */ | |
3272 | ||
3273 | /* In the general case, we can't allow | |
3274 | full expressions with symbol | |
3275 | differences and such. The relocation | |
3276 | entries for symbols not defined in this | |
3277 | assembly would require arbitrary field | |
3278 | widths, positions, and masks which most | |
3279 | of our current object formats don't | |
3280 | support. | |
cd3b81bd | 3281 | |
40324362 KR |
3282 | In the specific case where a symbol |
3283 | *is* defined in this assembly, we | |
3284 | *could* build fixups and track it, but | |
3285 | this could lead to confusion for the | |
3286 | backends. I'm lazy. I'll take any | |
3287 | SEG_ABSOLUTE. I think that means that | |
3288 | you can use a previous .set or | |
3289 | .equ type symbol. xoxorich. */ | |
3290 | ||
5ac34ac3 | 3291 | if (exp->X_op == O_absent) |
6efd877d | 3292 | { |
5ac34ac3 | 3293 | as_warn ("using a bit field width of zero"); |
40324362 | 3294 | exp->X_add_number = 0; |
5ac34ac3 | 3295 | exp->X_op = O_constant; |
40324362 KR |
3296 | } /* implied zero width bitfield */ |
3297 | ||
5ac34ac3 | 3298 | if (exp->X_op != O_constant) |
6efd877d | 3299 | { |
40324362 | 3300 | *input_line_pointer = '\0'; |
5ac34ac3 | 3301 | as_bad ("field width \"%s\" too complex for a bitfield", hold); |
40324362 KR |
3302 | *input_line_pointer = ':'; |
3303 | demand_empty_rest_of_line (); | |
3304 | return; | |
3305 | } /* too complex */ | |
3306 | ||
3307 | if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes)) | |
9471a360 | 3308 | { |
80aab579 | 3309 | as_warn ("field width %lu too big to fit in %d bytes: truncated to %d bits", |
40324362 KR |
3310 | width, nbytes, (BITS_PER_CHAR * nbytes)); |
3311 | width = BITS_PER_CHAR * nbytes; | |
3312 | } /* too big */ | |
3313 | ||
3314 | if (width > bits_available) | |
9471a360 | 3315 | { |
40324362 KR |
3316 | /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */ |
3317 | input_line_pointer = hold; | |
3318 | exp->X_add_number = value; | |
3319 | break; | |
3320 | } /* won't fit */ | |
3321 | ||
3322 | hold = ++input_line_pointer; /* skip ':' */ | |
3323 | ||
5ac34ac3 ILT |
3324 | (void) expression (exp); |
3325 | if (exp->X_op != O_constant) | |
9471a360 | 3326 | { |
40324362 KR |
3327 | char cache = *input_line_pointer; |
3328 | ||
3329 | *input_line_pointer = '\0'; | |
5ac34ac3 | 3330 | as_bad ("field value \"%s\" too complex for a bitfield", hold); |
40324362 KR |
3331 | *input_line_pointer = cache; |
3332 | demand_empty_rest_of_line (); | |
3333 | return; | |
3334 | } /* too complex */ | |
3335 | ||
5ac34ac3 ILT |
3336 | value |= ((~(-1 << width) & exp->X_add_number) |
3337 | << ((BITS_PER_CHAR * nbytes) - bits_available)); | |
40324362 KR |
3338 | |
3339 | if ((bits_available -= width) == 0 | |
3340 | || is_it_end_of_statement () | |
3341 | || *input_line_pointer != ',') | |
3342 | { | |
3343 | break; | |
3344 | } /* all the bitfields we're gonna get */ | |
3345 | ||
3346 | hold = ++input_line_pointer; | |
5ac34ac3 | 3347 | (void) expression (exp); |
40324362 KR |
3348 | } /* forever loop */ |
3349 | ||
3350 | exp->X_add_number = value; | |
5ac34ac3 | 3351 | exp->X_op = O_constant; |
80aab579 | 3352 | exp->X_unsigned = 1; |
40324362 KR |
3353 | } /* if looks like a bitfield */ |
3354 | } /* parse_bitfield_cons() */ | |
3355 | ||
3356 | #endif /* BITFIELD_CONS_EXPRESSIONS */ | |
3357 | \f | |
1356d77d | 3358 | /* Handle an MRI style string expression. */ |
40324362 KR |
3359 | |
3360 | static void | |
3361 | parse_mri_cons (exp, nbytes) | |
3362 | expressionS *exp; | |
3363 | unsigned int nbytes; | |
3364 | { | |
1356d77d ILT |
3365 | if (*input_line_pointer != '\'' |
3366 | && (input_line_pointer[1] != '\'' | |
3367 | || (*input_line_pointer != 'A' | |
3368 | && *input_line_pointer != 'E'))) | |
3369 | TC_PARSE_CONS_EXPRESSION (exp, nbytes); | |
3370 | else | |
40324362 | 3371 | { |
40324362 KR |
3372 | int scan = 0; |
3373 | unsigned int result = 0; | |
1356d77d ILT |
3374 | |
3375 | /* An MRI style string. Cut into as many bytes as will fit into | |
3376 | a nbyte chunk, left justify if necessary, and separate with | |
3377 | commas so we can try again later. */ | |
3378 | if (*input_line_pointer == 'A') | |
3379 | ++input_line_pointer; | |
3380 | else if (*input_line_pointer == 'E') | |
3381 | { | |
3382 | as_bad ("EBCDIC constants are not supported"); | |
3383 | ++input_line_pointer; | |
3384 | } | |
3385 | ||
40324362 KR |
3386 | input_line_pointer++; |
3387 | for (scan = 0; scan < nbytes; scan++) | |
3388 | { | |
3389 | if (*input_line_pointer == '\'') | |
3390 | { | |
3391 | if (input_line_pointer[1] == '\'') | |
6efd877d | 3392 | { |
40324362 | 3393 | input_line_pointer++; |
f8701a3f | 3394 | } |
40324362 KR |
3395 | else |
3396 | break; | |
9471a360 | 3397 | } |
40324362 KR |
3398 | result = (result << 8) | (*input_line_pointer++); |
3399 | } | |
f8701a3f | 3400 | |
40324362 KR |
3401 | /* Left justify */ |
3402 | while (scan < nbytes) | |
3403 | { | |
3404 | result <<= 8; | |
3405 | scan++; | |
3406 | } | |
3407 | /* Create correct expression */ | |
5ac34ac3 | 3408 | exp->X_op = O_constant; |
40324362 | 3409 | exp->X_add_number = result; |
40324362 KR |
3410 | /* Fake it so that we can read the next char too */ |
3411 | if (input_line_pointer[0] != '\'' || | |
3412 | (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\'')) | |
3413 | { | |
3414 | input_line_pointer -= 2; | |
3415 | input_line_pointer[0] = ','; | |
3416 | input_line_pointer[1] = '\''; | |
3417 | } | |
3418 | else | |
3419 | input_line_pointer++; | |
3420 | } | |
40324362 | 3421 | } |
40324362 KR |
3422 | \f |
3423 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3424 | ||
3425 | /* Parse a repeat expression for cons. This is used by the MIPS | |
3426 | assembler. The format is NUMBER:COUNT; NUMBER appears in the | |
3427 | object file COUNT times. | |
3428 | ||
3429 | To use this for a target, define REPEAT_CONS_EXPRESSIONS. */ | |
3430 | ||
3431 | static void | |
3432 | parse_repeat_cons (exp, nbytes) | |
3433 | expressionS *exp; | |
3434 | unsigned int nbytes; | |
3435 | { | |
3436 | expressionS count; | |
40324362 KR |
3437 | register int i; |
3438 | ||
3439 | expression (exp); | |
3440 | ||
3441 | if (*input_line_pointer != ':') | |
3442 | { | |
3443 | /* No repeat count. */ | |
3444 | return; | |
3445 | } | |
3446 | ||
3447 | ++input_line_pointer; | |
5ac34ac3 ILT |
3448 | expression (&count); |
3449 | if (count.X_op != O_constant | |
40324362 KR |
3450 | || count.X_add_number <= 0) |
3451 | { | |
3452 | as_warn ("Unresolvable or nonpositive repeat count; using 1"); | |
3453 | return; | |
3454 | } | |
3455 | ||
3456 | /* The cons function is going to output this expression once. So we | |
3457 | output it count - 1 times. */ | |
3458 | for (i = count.X_add_number - 1; i > 0; i--) | |
3459 | emit_expr (exp, nbytes); | |
3460 | } | |
3461 | ||
3462 | #endif /* REPEAT_CONS_EXPRESSIONS */ | |
fecd2382 | 3463 | \f |
e28c40d7 ILT |
3464 | /* Parse a floating point number represented as a hex constant. This |
3465 | permits users to specify the exact bits they want in the floating | |
3466 | point number. */ | |
3467 | ||
3468 | static int | |
3469 | hex_float (float_type, bytes) | |
3470 | int float_type; | |
3471 | char *bytes; | |
3472 | { | |
3473 | int length; | |
3474 | int i; | |
3475 | ||
3476 | switch (float_type) | |
3477 | { | |
3478 | case 'f': | |
3479 | case 'F': | |
3480 | case 's': | |
3481 | case 'S': | |
3482 | length = 4; | |
3483 | break; | |
3484 | ||
3485 | case 'd': | |
3486 | case 'D': | |
3487 | case 'r': | |
3488 | case 'R': | |
3489 | length = 8; | |
3490 | break; | |
3491 | ||
3492 | case 'x': | |
3493 | case 'X': | |
3494 | length = 12; | |
3495 | break; | |
3496 | ||
3497 | case 'p': | |
3498 | case 'P': | |
3499 | length = 12; | |
3500 | break; | |
3501 | ||
3502 | default: | |
3503 | as_bad ("Unknown floating type type '%c'", float_type); | |
3504 | return -1; | |
3505 | } | |
3506 | ||
3507 | /* It would be nice if we could go through expression to parse the | |
3508 | hex constant, but if we get a bignum it's a pain to sort it into | |
3509 | the buffer correctly. */ | |
3510 | i = 0; | |
3511 | while (hex_p (*input_line_pointer) || *input_line_pointer == '_') | |
3512 | { | |
3513 | int d; | |
3514 | ||
3515 | /* The MRI assembler accepts arbitrary underscores strewn about | |
3516 | through the hex constant, so we ignore them as well. */ | |
3517 | if (*input_line_pointer == '_') | |
3518 | { | |
3519 | ++input_line_pointer; | |
3520 | continue; | |
3521 | } | |
3522 | ||
3523 | if (i >= length) | |
3524 | { | |
3525 | as_warn ("Floating point constant too large"); | |
3526 | return -1; | |
3527 | } | |
3528 | d = hex_value (*input_line_pointer) << 4; | |
3529 | ++input_line_pointer; | |
3530 | while (*input_line_pointer == '_') | |
3531 | ++input_line_pointer; | |
3532 | if (hex_p (*input_line_pointer)) | |
3533 | { | |
3534 | d += hex_value (*input_line_pointer); | |
3535 | ++input_line_pointer; | |
3536 | } | |
a920b693 ILT |
3537 | if (target_big_endian) |
3538 | bytes[i] = d; | |
3539 | else | |
3540 | bytes[length - i - 1] = d; | |
3541 | ++i; | |
e28c40d7 ILT |
3542 | } |
3543 | ||
3544 | if (i < length) | |
a920b693 ILT |
3545 | { |
3546 | if (target_big_endian) | |
3547 | memset (bytes + i, 0, length - i); | |
3548 | else | |
3549 | memset (bytes, 0, length - i); | |
3550 | } | |
e28c40d7 ILT |
3551 | |
3552 | return length; | |
3553 | } | |
3554 | ||
fecd2382 RP |
3555 | /* |
3556 | * float_cons() | |
3557 | * | |
3558 | * CONStruct some more frag chars of .floats .ffloats etc. | |
3559 | * Makes 0 or more new frags. | |
3560 | * If need_pass_2 == 1, no frags are emitted. | |
3561 | * This understands only floating literals, not expressions. Sorry. | |
3562 | * | |
3563 | * A floating constant is defined by atof_generic(), except it is preceded | |
3564 | * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its | |
3565 | * reading, I decided to be incompatible. This always tries to give you | |
3566 | * rounded bits to the precision of the pseudo-op. Former AS did premature | |
3567 | * truncatation, restored noisy bits instead of trailing 0s AND gave you | |
3568 | * a choice of 2 flavours of noise according to which of 2 floating-point | |
3569 | * scanners you directed AS to use. | |
3570 | * | |
3571 | * In: input_line_pointer->whitespace before, or '0' of flonum. | |
3572 | * | |
3573 | */ | |
3574 | ||
ba71c54d KR |
3575 | void |
3576 | float_cons (float_type) | |
6efd877d | 3577 | /* Clobbers input_line-pointer, checks end-of-line. */ |
f8701a3f | 3578 | register int float_type; /* 'f':.ffloat ... 'F':.float ... */ |
fecd2382 | 3579 | { |
6efd877d | 3580 | register char *p; |
6efd877d KR |
3581 | int length; /* Number of chars in an object. */ |
3582 | register char *err; /* Error from scanning floating literal. */ | |
3583 | char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT]; | |
f8701a3f | 3584 | |
6efd877d | 3585 | if (is_it_end_of_statement ()) |
f8701a3f | 3586 | { |
1e9cf565 ILT |
3587 | demand_empty_rest_of_line (); |
3588 | return; | |
f8701a3f | 3589 | } |
1e9cf565 ILT |
3590 | |
3591 | do | |
f8701a3f SC |
3592 | { |
3593 | /* input_line_pointer->1st char of a flonum (we hope!). */ | |
6efd877d | 3594 | SKIP_WHITESPACE (); |
1e9cf565 | 3595 | |
f8701a3f SC |
3596 | /* Skip any 0{letter} that may be present. Don't even check if the |
3597 | * letter is legal. Someone may invent a "z" format and this routine | |
3598 | * has no use for such information. Lusers beware: you get | |
3599 | * diagnostics if your input is ill-conditioned. | |
3600 | */ | |
6efd877d KR |
3601 | if (input_line_pointer[0] == '0' && isalpha (input_line_pointer[1])) |
3602 | input_line_pointer += 2; | |
f8701a3f | 3603 | |
1356d77d ILT |
3604 | /* Accept :xxxx, where the x's are hex digits, for a floating |
3605 | point with the exact digits specified. */ | |
3606 | if (input_line_pointer[0] == ':') | |
f8701a3f | 3607 | { |
e28c40d7 ILT |
3608 | ++input_line_pointer; |
3609 | length = hex_float (float_type, temp); | |
3610 | if (length < 0) | |
1356d77d | 3611 | { |
1356d77d ILT |
3612 | ignore_rest_of_line (); |
3613 | return; | |
3614 | } | |
1356d77d ILT |
3615 | } |
3616 | else | |
3617 | { | |
3618 | err = md_atof (float_type, temp, &length); | |
3619 | know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT); | |
3620 | know (length > 0); | |
3621 | if (err) | |
3622 | { | |
3623 | as_bad ("Bad floating literal: %s", err); | |
3624 | ignore_rest_of_line (); | |
3625 | return; | |
3626 | } | |
f8701a3f | 3627 | } |
1e9cf565 ILT |
3628 | |
3629 | if (!need_pass_2) | |
f8701a3f | 3630 | { |
1e9cf565 ILT |
3631 | int count; |
3632 | ||
3633 | count = 1; | |
3634 | ||
3635 | #ifdef REPEAT_CONS_EXPRESSIONS | |
3636 | if (*input_line_pointer == ':') | |
3637 | { | |
1e9cf565 ILT |
3638 | expressionS count_exp; |
3639 | ||
3640 | ++input_line_pointer; | |
5ac34ac3 ILT |
3641 | expression (&count_exp); |
3642 | if (count_exp.X_op != O_constant | |
1e9cf565 ILT |
3643 | || count_exp.X_add_number <= 0) |
3644 | { | |
5ac34ac3 | 3645 | as_warn ("unresolvable or nonpositive repeat count; using 1"); |
1e9cf565 ILT |
3646 | } |
3647 | else | |
3648 | count = count_exp.X_add_number; | |
3649 | } | |
3650 | #endif | |
3651 | ||
3652 | while (--count >= 0) | |
a39116f1 | 3653 | { |
f8701a3f | 3654 | p = frag_more (length); |
604633ae | 3655 | memcpy (p, temp, (unsigned int) length); |
a39116f1 | 3656 | } |
542e1629 | 3657 | } |
1e9cf565 | 3658 | SKIP_WHITESPACE (); |
f8701a3f | 3659 | } |
1e9cf565 ILT |
3660 | while (*input_line_pointer++ == ','); |
3661 | ||
3662 | --input_line_pointer; /* Put terminator back into stream. */ | |
6efd877d | 3663 | demand_empty_rest_of_line (); |
f8701a3f | 3664 | } /* float_cons() */ |
fecd2382 RP |
3665 | \f |
3666 | /* | |
3667 | * stringer() | |
3668 | * | |
3669 | * We read 0 or more ',' seperated, double-quoted strings. | |
3670 | * | |
3671 | * Caller should have checked need_pass_2 is FALSE because we don't check it. | |
3672 | */ | |
a39116f1 RP |
3673 | |
3674 | ||
6efd877d KR |
3675 | void |
3676 | stringer (append_zero) /* Worker to do .ascii etc statements. */ | |
3677 | /* Checks end-of-line. */ | |
f8701a3f | 3678 | register int append_zero; /* 0: don't append '\0', else 1 */ |
fecd2382 | 3679 | { |
f8701a3f | 3680 | register unsigned int c; |
6efd877d | 3681 | |
a2a5a4fa KR |
3682 | #ifdef md_flush_pending_output |
3683 | md_flush_pending_output (); | |
3684 | #endif | |
3685 | ||
f8701a3f SC |
3686 | /* |
3687 | * The following awkward logic is to parse ZERO or more strings, | |
3688 | * comma seperated. Recall a string expression includes spaces | |
3689 | * before the opening '\"' and spaces after the closing '\"'. | |
3690 | * We fake a leading ',' if there is (supposed to be) | |
3691 | * a 1st, expression. We keep demanding expressions for each | |
3692 | * ','. | |
3693 | */ | |
6efd877d KR |
3694 | if (is_it_end_of_statement ()) |
3695 | { | |
3696 | c = 0; /* Skip loop. */ | |
3697 | ++input_line_pointer; /* Compensate for end of loop. */ | |
3698 | } | |
f8701a3f | 3699 | else |
6efd877d KR |
3700 | { |
3701 | c = ','; /* Do loop. */ | |
3702 | } | |
3703 | while (c == ',' || c == '<' || c == '"') | |
3704 | { | |
3705 | SKIP_WHITESPACE (); | |
3706 | switch (*input_line_pointer) | |
3707 | { | |
3708 | case '\"': | |
3709 | ++input_line_pointer; /*->1st char of string. */ | |
3710 | while (is_a_char (c = next_char_of_string ())) | |
3711 | { | |
3712 | FRAG_APPEND_1_CHAR (c); | |
3713 | } | |
3714 | if (append_zero) | |
3715 | { | |
3716 | FRAG_APPEND_1_CHAR (0); | |
3717 | } | |
3718 | know (input_line_pointer[-1] == '\"'); | |
3719 | break; | |
3720 | case '<': | |
3721 | input_line_pointer++; | |
3722 | c = get_single_number (); | |
3723 | FRAG_APPEND_1_CHAR (c); | |
3724 | if (*input_line_pointer != '>') | |
3725 | { | |
3726 | as_bad ("Expected <nn>"); | |
3727 | } | |
3728 | input_line_pointer++; | |
3729 | break; | |
3730 | case ',': | |
3731 | input_line_pointer++; | |
3732 | break; | |
3733 | } | |
3734 | SKIP_WHITESPACE (); | |
3735 | c = *input_line_pointer; | |
f8701a3f | 3736 | } |
f8701a3f | 3737 | |
6efd877d KR |
3738 | demand_empty_rest_of_line (); |
3739 | } /* stringer() */ | |
fecd2382 | 3740 | \f |
6efd877d | 3741 | /* FIXME-SOMEDAY: I had trouble here on characters with the |
f8701a3f SC |
3742 | high bits set. We'll probably also have trouble with |
3743 | multibyte chars, wide chars, etc. Also be careful about | |
3744 | returning values bigger than 1 byte. xoxorich. */ | |
fecd2382 | 3745 | |
6efd877d KR |
3746 | unsigned int |
3747 | next_char_of_string () | |
3748 | { | |
3749 | register unsigned int c; | |
3750 | ||
3751 | c = *input_line_pointer++ & CHAR_MASK; | |
3752 | switch (c) | |
3753 | { | |
3754 | case '\"': | |
3755 | c = NOT_A_CHAR; | |
3756 | break; | |
3757 | ||
ddb393cf | 3758 | #ifndef NO_STRING_ESCAPES |
6efd877d KR |
3759 | case '\\': |
3760 | switch (c = *input_line_pointer++) | |
3761 | { | |
3762 | case 'b': | |
3763 | c = '\b'; | |
3764 | break; | |
3765 | ||
3766 | case 'f': | |
3767 | c = '\f'; | |
3768 | break; | |
3769 | ||
3770 | case 'n': | |
3771 | c = '\n'; | |
3772 | break; | |
3773 | ||
3774 | case 'r': | |
3775 | c = '\r'; | |
3776 | break; | |
3777 | ||
3778 | case 't': | |
3779 | c = '\t'; | |
3780 | break; | |
3781 | ||
6efd877d KR |
3782 | case 'v': |
3783 | c = '\013'; | |
3784 | break; | |
6efd877d KR |
3785 | |
3786 | case '\\': | |
3787 | case '"': | |
3788 | break; /* As itself. */ | |
3789 | ||
3790 | case '0': | |
3791 | case '1': | |
3792 | case '2': | |
3793 | case '3': | |
3794 | case '4': | |
3795 | case '5': | |
3796 | case '6': | |
3797 | case '7': | |
3798 | case '8': | |
3799 | case '9': | |
3800 | { | |
3801 | long number; | |
d4c8cbd8 | 3802 | int i; |
6efd877d | 3803 | |
d4c8cbd8 | 3804 | for (i = 0, number = 0; isdigit (c) && i < 3; c = *input_line_pointer++, i++) |
6efd877d KR |
3805 | { |
3806 | number = number * 8 + c - '0'; | |
3807 | } | |
3808 | c = number & 0xff; | |
3809 | } | |
3810 | --input_line_pointer; | |
3811 | break; | |
3812 | ||
d4c8cbd8 JL |
3813 | case 'x': |
3814 | case 'X': | |
3815 | { | |
3816 | long number; | |
3817 | ||
3818 | number = 0; | |
3819 | c = *input_line_pointer++; | |
3820 | while (isxdigit (c)) | |
3821 | { | |
3822 | if (isdigit (c)) | |
3823 | number = number * 16 + c - '0'; | |
3824 | else if (isupper (c)) | |
3825 | number = number * 16 + c - 'A' + 10; | |
3826 | else | |
3827 | number = number * 16 + c - 'a' + 10; | |
3828 | c = *input_line_pointer++; | |
3829 | } | |
3830 | c = number & 0xff; | |
3831 | --input_line_pointer; | |
3832 | } | |
3833 | break; | |
3834 | ||
6efd877d KR |
3835 | case '\n': |
3836 | /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */ | |
3837 | as_warn ("Unterminated string: Newline inserted."); | |
3838 | c = '\n'; | |
3839 | break; | |
3840 | ||
3841 | default: | |
3842 | ||
fecd2382 | 3843 | #ifdef ONLY_STANDARD_ESCAPES |
6efd877d KR |
3844 | as_bad ("Bad escaped character in string, '?' assumed"); |
3845 | c = '?'; | |
fecd2382 | 3846 | #endif /* ONLY_STANDARD_ESCAPES */ |
6efd877d KR |
3847 | |
3848 | break; | |
3849 | } /* switch on escaped char */ | |
3850 | break; | |
ddb393cf | 3851 | #endif /* ! defined (NO_STRING_ESCAPES) */ |
6efd877d KR |
3852 | |
3853 | default: | |
3854 | break; | |
3855 | } /* switch on char */ | |
3856 | return (c); | |
3857 | } /* next_char_of_string() */ | |
fecd2382 RP |
3858 | \f |
3859 | static segT | |
f8701a3f | 3860 | get_segmented_expression (expP) |
6efd877d | 3861 | register expressionS *expP; |
fecd2382 | 3862 | { |
6efd877d | 3863 | register segT retval; |
f8701a3f | 3864 | |
9471a360 | 3865 | retval = expression (expP); |
5ac34ac3 ILT |
3866 | if (expP->X_op == O_illegal |
3867 | || expP->X_op == O_absent | |
3868 | || expP->X_op == O_big) | |
f8701a3f | 3869 | { |
5ac34ac3 ILT |
3870 | as_bad ("expected address expression; zero assumed"); |
3871 | expP->X_op = O_constant; | |
6efd877d | 3872 | expP->X_add_number = 0; |
5ac34ac3 | 3873 | retval = absolute_section; |
f8701a3f | 3874 | } |
5ac34ac3 | 3875 | return retval; |
fecd2382 RP |
3876 | } |
3877 | ||
6efd877d KR |
3878 | static segT |
3879 | get_known_segmented_expression (expP) | |
3880 | register expressionS *expP; | |
fecd2382 | 3881 | { |
6efd877d | 3882 | register segT retval; |
f8701a3f | 3883 | |
9471a360 | 3884 | if ((retval = get_segmented_expression (expP)) == undefined_section) |
f8701a3f | 3885 | { |
5ac34ac3 ILT |
3886 | /* There is no easy way to extract the undefined symbol from the |
3887 | expression. */ | |
3888 | if (expP->X_add_symbol != NULL | |
3889 | && S_GET_SEGMENT (expP->X_add_symbol) != expr_section) | |
3890 | as_warn ("symbol \"%s\" undefined; zero assumed", | |
3891 | S_GET_NAME (expP->X_add_symbol)); | |
f8701a3f | 3892 | else |
5ac34ac3 ILT |
3893 | as_warn ("some symbol undefined; zero assumed"); |
3894 | retval = absolute_section; | |
3895 | expP->X_op = O_constant; | |
6efd877d | 3896 | expP->X_add_number = 0; |
f8701a3f | 3897 | } |
5ac34ac3 | 3898 | know (retval == absolute_section || SEG_NORMAL (retval)); |
f8701a3f | 3899 | return (retval); |
fecd2382 RP |
3900 | } /* get_known_segmented_expression() */ |
3901 | ||
58d4951d | 3902 | offsetT |
f8701a3f | 3903 | get_absolute_expression () |
fecd2382 | 3904 | { |
6efd877d | 3905 | expressionS exp; |
f8701a3f | 3906 | |
5ac34ac3 ILT |
3907 | expression (&exp); |
3908 | if (exp.X_op != O_constant) | |
f8701a3f | 3909 | { |
5ac34ac3 | 3910 | if (exp.X_op != O_absent) |
cd3b81bd | 3911 | as_bad ("bad or irreducible absolute expression; zero assumed"); |
6efd877d | 3912 | exp.X_add_number = 0; |
f8701a3f | 3913 | } |
5ac34ac3 | 3914 | return exp.X_add_number; |
fecd2382 RP |
3915 | } |
3916 | ||
6efd877d KR |
3917 | char /* return terminator */ |
3918 | get_absolute_expression_and_terminator (val_pointer) | |
3919 | long *val_pointer; /* return value of expression */ | |
fecd2382 | 3920 | { |
58d4951d ILT |
3921 | /* FIXME: val_pointer should probably be offsetT *. */ |
3922 | *val_pointer = (long) get_absolute_expression (); | |
6efd877d | 3923 | return (*input_line_pointer++); |
fecd2382 RP |
3924 | } |
3925 | \f | |
3926 | /* | |
3927 | * demand_copy_C_string() | |
3928 | * | |
3929 | * Like demand_copy_string, but return NULL if the string contains any '\0's. | |
3930 | * Give a warning if that happens. | |
3931 | */ | |
3932 | char * | |
f8701a3f | 3933 | demand_copy_C_string (len_pointer) |
6efd877d | 3934 | int *len_pointer; |
fecd2382 | 3935 | { |
6efd877d | 3936 | register char *s; |
f8701a3f | 3937 | |
6efd877d | 3938 | if ((s = demand_copy_string (len_pointer)) != 0) |
f8701a3f SC |
3939 | { |
3940 | register int len; | |
3941 | ||
6594d6b9 | 3942 | for (len = *len_pointer; len > 0; len--) |
f8701a3f | 3943 | { |
6efd877d | 3944 | if (*s == 0) |
fecd2382 | 3945 | { |
f8701a3f SC |
3946 | s = 0; |
3947 | len = 1; | |
6efd877d KR |
3948 | *len_pointer = 0; |
3949 | as_bad ("This string may not contain \'\\0\'"); | |
fecd2382 | 3950 | } |
f8701a3f SC |
3951 | } |
3952 | } | |
6594d6b9 | 3953 | return s; |
fecd2382 RP |
3954 | } |
3955 | \f | |
3956 | /* | |
3957 | * demand_copy_string() | |
3958 | * | |
3959 | * Demand string, but return a safe (=private) copy of the string. | |
3960 | * Return NULL if we can't read a string here. | |
3961 | */ | |
6ef37255 | 3962 | char * |
6efd877d KR |
3963 | demand_copy_string (lenP) |
3964 | int *lenP; | |
fecd2382 | 3965 | { |
6efd877d KR |
3966 | register unsigned int c; |
3967 | register int len; | |
3968 | char *retval; | |
3969 | ||
3970 | len = 0; | |
3971 | SKIP_WHITESPACE (); | |
3972 | if (*input_line_pointer == '\"') | |
3973 | { | |
3974 | input_line_pointer++; /* Skip opening quote. */ | |
3975 | ||
3976 | while (is_a_char (c = next_char_of_string ())) | |
3977 | { | |
3978 | obstack_1grow (¬es, c); | |
3979 | len++; | |
fecd2382 | 3980 | } |
42ac8fa8 ILT |
3981 | /* JF this next line is so demand_copy_C_string will return a |
3982 | null terminated string. */ | |
6efd877d KR |
3983 | obstack_1grow (¬es, '\0'); |
3984 | retval = obstack_finish (¬es); | |
3985 | } | |
3986 | else | |
3987 | { | |
3988 | as_warn ("Missing string"); | |
3989 | retval = NULL; | |
3990 | ignore_rest_of_line (); | |
3991 | } | |
3992 | *lenP = len; | |
3993 | return (retval); | |
3994 | } /* demand_copy_string() */ | |
fecd2382 RP |
3995 | \f |
3996 | /* | |
3997 | * is_it_end_of_statement() | |
3998 | * | |
3999 | * In: Input_line_pointer->next character. | |
4000 | * | |
4001 | * Do: Skip input_line_pointer over all whitespace. | |
4002 | * | |
4003 | * Out: 1 if input_line_pointer->end-of-line. | |
f8701a3f | 4004 | */ |
6efd877d KR |
4005 | int |
4006 | is_it_end_of_statement () | |
4007 | { | |
4008 | SKIP_WHITESPACE (); | |
58d4951d | 4009 | return (is_end_of_line[(unsigned char) *input_line_pointer]); |
6efd877d | 4010 | } /* is_it_end_of_statement() */ |
fecd2382 | 4011 | |
6efd877d KR |
4012 | void |
4013 | equals (sym_name) | |
4014 | char *sym_name; | |
fecd2382 | 4015 | { |
6efd877d | 4016 | register symbolS *symbolP; /* symbol we are working with */ |
86038ada | 4017 | char *stop; |
18c9057f | 4018 | char stopc; |
f8701a3f SC |
4019 | |
4020 | input_line_pointer++; | |
6efd877d | 4021 | if (*input_line_pointer == '=') |
f8701a3f SC |
4022 | input_line_pointer++; |
4023 | ||
6efd877d | 4024 | while (*input_line_pointer == ' ' || *input_line_pointer == '\t') |
f8701a3f SC |
4025 | input_line_pointer++; |
4026 | ||
86038ada | 4027 | if (flag_mri) |
18c9057f | 4028 | stop = mri_comment_field (&stopc); |
86038ada | 4029 | |
6efd877d KR |
4030 | if (sym_name[0] == '.' && sym_name[1] == '\0') |
4031 | { | |
4032 | /* Turn '. = mumble' into a .org mumble */ | |
4033 | register segT segment; | |
4034 | expressionS exp; | |
f8701a3f | 4035 | |
6efd877d KR |
4036 | segment = get_known_segmented_expression (&exp); |
4037 | if (!need_pass_2) | |
e28c40d7 | 4038 | do_org (segment, &exp, 0); |
6efd877d KR |
4039 | } |
4040 | else | |
4041 | { | |
4042 | symbolP = symbol_find_or_make (sym_name); | |
4043 | pseudo_set (symbolP); | |
4044 | } | |
86038ada ILT |
4045 | |
4046 | if (flag_mri) | |
18c9057f | 4047 | mri_comment_end (stop, stopc); |
6efd877d | 4048 | } /* equals() */ |
fecd2382 RP |
4049 | |
4050 | /* .include -- include a file at this point. */ | |
4051 | ||
4052 | /* ARGSUSED */ | |
6efd877d KR |
4053 | void |
4054 | s_include (arg) | |
4055 | int arg; | |
fecd2382 | 4056 | { |
f8701a3f SC |
4057 | char *newbuf; |
4058 | char *filename; | |
4059 | int i; | |
4060 | FILE *try; | |
4061 | char *path; | |
4062 | ||
cef72a92 | 4063 | if (! flag_m68k_mri) |
ca232972 ILT |
4064 | filename = demand_copy_string (&i); |
4065 | else | |
4066 | { | |
4067 | SKIP_WHITESPACE (); | |
4068 | i = 0; | |
4069 | while (! is_end_of_line[(unsigned char) *input_line_pointer] | |
4070 | && *input_line_pointer != ' ' | |
4071 | && *input_line_pointer != '\t') | |
4072 | { | |
4073 | obstack_1grow (¬es, *input_line_pointer); | |
4074 | ++input_line_pointer; | |
4075 | ++i; | |
4076 | } | |
4077 | obstack_1grow (¬es, '\0'); | |
4078 | filename = obstack_finish (¬es); | |
42ac8fa8 ILT |
4079 | while (! is_end_of_line[(unsigned char) *input_line_pointer]) |
4080 | ++input_line_pointer; | |
ca232972 | 4081 | } |
6efd877d | 4082 | demand_empty_rest_of_line (); |
604633ae | 4083 | path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ ); |
6efd877d KR |
4084 | for (i = 0; i < include_dir_count; i++) |
4085 | { | |
4086 | strcpy (path, include_dirs[i]); | |
4087 | strcat (path, "/"); | |
4088 | strcat (path, filename); | |
f2889110 | 4089 | if (0 != (try = fopen (path, "r"))) |
6efd877d KR |
4090 | { |
4091 | fclose (try); | |
4092 | goto gotit; | |
4093 | } | |
4094 | } | |
4095 | free (path); | |
f8701a3f SC |
4096 | path = filename; |
4097 | gotit: | |
4098 | /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */ | |
4099 | newbuf = input_scrub_include_file (path, input_line_pointer); | |
4100 | buffer_limit = input_scrub_next_buffer (&input_line_pointer); | |
6efd877d | 4101 | } /* s_include() */ |
fecd2382 | 4102 | |
6efd877d KR |
4103 | void |
4104 | add_include_dir (path) | |
4105 | char *path; | |
fecd2382 | 4106 | { |
f8701a3f SC |
4107 | int i; |
4108 | ||
4109 | if (include_dir_count == 0) | |
4110 | { | |
6efd877d | 4111 | include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs)); |
f8701a3f SC |
4112 | include_dirs[0] = "."; /* Current dir */ |
4113 | include_dir_count = 2; | |
4114 | } | |
4115 | else | |
4116 | { | |
4117 | include_dir_count++; | |
6efd877d KR |
4118 | include_dirs = (char **) realloc (include_dirs, |
4119 | include_dir_count * sizeof (*include_dirs)); | |
f8701a3f SC |
4120 | } |
4121 | ||
6efd877d | 4122 | include_dirs[include_dir_count - 1] = path; /* New one */ |
f8701a3f | 4123 | |
6efd877d KR |
4124 | i = strlen (path); |
4125 | if (i > include_dir_maxlen) | |
4126 | include_dir_maxlen = i; | |
4127 | } /* add_include_dir() */ | |
fecd2382 | 4128 | |
6efd877d KR |
4129 | void |
4130 | s_ignore (arg) | |
4131 | int arg; | |
fecd2382 | 4132 | { |
58d4951d | 4133 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) |
6efd877d KR |
4134 | { |
4135 | ++input_line_pointer; | |
4136 | } | |
4137 | ++input_line_pointer; | |
4064305e SS |
4138 | } |
4139 | ||
604633ae | 4140 | |
6594d6b9 KR |
4141 | void |
4142 | read_print_statistics (file) | |
4143 | FILE *file; | |
4144 | { | |
4145 | hash_print_statistics (file, "pseudo-op table", po_hash); | |
4146 | } | |
4147 | ||
fecd2382 | 4148 | /* end of read.c */ |